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S AND PLANNED ACTIVITIES ................................................................. 4-1 FINAL QUARTERLY LONG-TERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
S AND PLANNED ACTIVITIES ................................................................. 4-1 FINAL QUARTERLY LONG-TERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
June 22, 2009 Table of Contents 2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 TABLES Table 1Groundwater Sampling Methods, Equipment, Frequency, and DepthsTable 22009 1st Quarter Low Tide Groundwater ElevationsTable 32009 1st Groundwater Analytical Results and AveragesTable 42009 1st Quarter Groundwater Analytical ResultsTable 5Historic Groundwater Analytical Results FIGURES Figure 1Site Location PlanFigure 2Site PlanFigure 3Lower Hudson Valley Geologic MapFigure 4Current and Potential Future SSC Source LocationsFigure 4AUnit 3 - Cross-Section C-C"Figure 51st Quarter 2009 Shallow and Deep Groundwater ContoursFigure 5A1 st Quarter 2009 Long-Term Transducer Monitoring Evaluation MapFigure 61st Quarter 2009 Average Tritium Activity MapFigure 71st Quarter 2009 Average Strontium-90 Activity MapFigure 7ASr-90 Baseline Analysis - Unit 1 Defueling EvaluationFigure 81st Quarter 2009 Average Cesium, Cobalt, and Nickel Activity Map APPENDICES Appendix A:LimitationsAppendix B:Transducer Installation LogsAppendix C:Chains of CustodyAppendix D:1st Quarter 2009 Sampling Data SheetsAppendix E:Post-Q1 2009 Mid-Quarter Sampling Data SheetsAppendix F:Dose CalculationsAppendix G:Unit 2 Tritium Plume Trend AnalysesAppendix H:Recent Tracer Testing DataAppendix I:Leak Collection Box DataAppendix J:Lafarge Well LAF-002 RefurbishmentAppendix K:Groundwater Level Transducer Redeployment FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
June 22, 2009 Table of Contents 2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 TABLES Table 1Groundwater Sampling Methods, Equipment, Frequency, and DepthsTable 22009 1st Quarter Low Tide Groundwater ElevationsTable 32009 1st Groundwater Analytical Results and AveragesTable 42009 1st Quarter Groundwater Analytical ResultsTable 5Historic Groundwater Analytical Results FIGURES Figure 1Site Location PlanFigure 2Site PlanFigure 3Lower Hudson Valley Geologic MapFigure 4Current and Potential Future SSC Source LocationsFigure 4AUnit 3 - Cross-Section C-C"Figure 51st Quarter 2009 Shallow and Deep Groundwater ContoursFigure 5A1 st Quarter 2009 Long-Term Transducer Monitoring Evaluation MapFigure 61st Quarter 2009 Average Tritium Activity MapFigure 71st Quarter 2009 Average Strontium-90 Activity MapFigure 7ASr-90 Baseline Analysis - Unit 1 Defueling EvaluationFigure 81st Quarter 2009 Average Cesium, Cobalt, and Nickel Activity Map APPENDICES Appendix A:LimitationsAppendix B:Transducer Installation LogsAppendix C:Chains of CustodyAppendix D:1st Quarter 2009 Sampling Data SheetsAppendix E:Post-Q1 2009 Mid-Quarter Sampling Data SheetsAppendix F:Dose CalculationsAppendix G:Unit 2 Tritium Plume Trend AnalysesAppendix H:Recent Tracer Testing DataAppendix I:Leak Collection Box DataAppendix J:Lafarge Well LAF-002 RefurbishmentAppendix K:Groundwater Level Transducer Redeployment FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
June 22, 2010 Page 1-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 1.0 EXECUTIVE  
June 22, 2010 Page 1-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92                                                    
 
===1.0 EXECUTIVE===


==SUMMARY==
==SUMMARY==
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3 The results of these more quantitative analyses have previously been presented to the NRC during the Deviation Memo Closeout Meeting of August 18 and 19,2009. Additional analyses were then also performed in response to NRC suggestions presented at that meeting. The preparation and finalization of this quarterly report was delayed so as to include these additional analyses. Given the timing of the NRC meeting, some data beyond that associated with Quarter 1 became available  and was therefore used to increase the robustness of the associated analyses and is thus included herein. 4 These retention mechanisms are discussed along with the CSM in the previously cited Hydrogeologic Site Investigation Report. 5 As part of the overall Unit 2 SFP liner integrity evaluation, Entergy undertook testing of a number of welds relative to the potential for ongoing corrosion, such as due to Microbial-Influenced Corrosion (MIC). It was concluded that there was no evidence of ongo ing corrosion.
3 The results of these more quantitative analyses have previously been presented to the NRC during the Deviation Memo Closeout Meeting of August 18 and 19,2009. Additional analyses were then also performed in response to NRC suggestions presented at that meeting. The preparation and finalization of this quarterly report was delayed so as to include these additional analyses. Given the timing of the NRC meeting, some data beyond that associated with Quarter 1 became available  and was therefore used to increase the robustness of the associated analyses and is thus included herein. 4 These retention mechanisms are discussed along with the CSM in the previously cited Hydrogeologic Site Investigation Report. 5 As part of the overall Unit 2 SFP liner integrity evaluation, Entergy undertook testing of a number of welds relative to the potential for ongoing corrosion, such as due to Microbial-Influenced Corrosion (MIC). It was concluded that there was no evidence of ongo ing corrosion.
FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
June 22, 2010 Page 2-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 2.0 SCOPE OF WORK During Q1 2009, GZA performed groundwater monitoring activities at IPEC in Buchanan, New York (Site) as part of IPEC's overall Long Term Groundwater Monitoring Program (LTMP) at the Site 6. The overall foundation for the development and execution of this LTMP is based on the CSM, a description of which is contained within GZA's Hydrogeologic Site Investigation Report
June 22, 2010 Page 2-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92                                                    
 
===2.0 SCOPE===
OF WORK During Q1 2009, GZA performed groundwater monitoring activities at IPEC in Buchanan, New York (Site) as part of IPEC's overall Long Term Groundwater Monitoring Program (LTMP) at the Site 6. The overall foundation for the development and execution of this LTMP is based on the CSM, a description of which is contained within GZA's Hydrogeologic Site Investigation Report
: 7. The scope of work completed for this quarter's monitoring is described in the Sections below.   
: 7. The scope of work completed for this quarter's monitoring is described in the Sections below.   


Refer to Figures 1 and 2 for a Site Location Plan and Site Plan. Figure 3 provides a Lower Hudson Valley Geologic Map and Figure 4 summarizes Current and Potential Future SSC Source Locations.
Refer to Figures 1 and 2 for a Site Location Plan and Site Plan. Figure 3 provides a Lower Hudson Valley Geologic Map and Figure 4 summarizes Current and Potential Future SSC Source Locations.  
2.1 Groundwater Elevation Measurement GZA currently maintains transducers and dataloggers as part of the monitoring instrumentation located across the Site
 
===2.1 Groundwater===
Elevation Measurement GZA currently maintains transducers and dataloggers as part of the monitoring instrumentation located across the Site
: 8. These instruments record groundwater elevation and temperature measurements at regular time intervals
: 8. These instruments record groundwater elevation and temperature measurements at regular time intervals
: 9. Transducer installation logs are presented in Appendix B. Following the quarterly sampling, GZA downloaded groundwater elevation data collected by the pressure transducers over the duration of the quarter. Using these data, GZA developed Site groundwater elevation contours at low river tide conditions for the upper and lower portions of  
: 9. Transducer installation logs are presented in Appendix B. Following the quarterly sampling, GZA downloaded groundwater elevation data collected by the pressure transducers over the duration of the quarter. Using these data, GZA developed Site groundwater elevation contours at low river tide conditions for the upper and lower portions of  


bedrock. These data are presented on Table 2 and Figure 5 for the December 8, 2008 low river tide. The groundwater contour map is used to compute groundwater flow gradients, which are used to provide ongoing calibration of the Precipitation Mass Balance Model (as used in IPEC's radiological dose computations - see Section 3.1). It is anticipated that sufficient seasonal groundwater elevation data will have been collected through the middle of 2009 to verify the suitability of the model for dose computation. As such, it is currently our intent to substantially reduce the scope of groundwater elevation data collection after that time.
bedrock. These data are presented on Table 2 and Figure 5 for the December 8, 2008 low river tide. The groundwater contour map is used to compute groundwater flow gradients, which are used to provide ongoing calibration of the Precipitation Mass Balance Model (as used in IPEC's radiological dose computations - see Section 3.1). It is anticipated that sufficient seasonal groundwater elevation data will have been collected through the middle of 2009 to verify the suitability of the model for dose computation. As such, it is currently our intent to substantially reduce the scope of groundwater elevation data collection after that time.  
2.2 Groundwater Sampling During Q1 2009, GZA collected groundwater samples for radionuclide analysis from scheduled sampling intervals within select monitoring installations ("wells") as shown in Table 3. In addition, GZA split groundwater samples from select locations between Entergy, the Nuclear Regulatory Commission (NRC), and the New York State Department of Environmental Conservation (NYSDEC). Chains of Custody for samples collected by GZA are presented  
 
===2.2 Groundwater===
Sampling During Q1 2009, GZA collected groundwater samples for radionuclide analysis from scheduled sampling intervals within select monitoring installations ("wells") as shown in Table 3. In addition, GZA split groundwater samples from select locations between Entergy, the Nuclear Regulatory Commission (NRC), and the New York State Department of Environmental Conservation (NYSDEC). Chains of Custody for samples collected by GZA are presented  


in Appendix C. 6 Refer to the "Final Quarterly Long-Term Groundwater Monitoring Report Q2-Q4 2007 (Report No. 1)," dated May 2008 for Site background information and a description of the environmental setting. 7 Hydrogeologic Site Investigation Report, January 7, 2008, prepared by GZA GeoEnvironmental, Inc, on behalf of Enercon Services, Inc., for Entergy Nuclear Northeast, Indian Point Energy Center, 450 Broadway, Buchanan, NY 10511. 8 It is anticipated that subsequent to the Q2 2009 quarterly monitoring report, the transducer monitoring program will be reduced to only a select set of locations that will continue to be routinely monitored with groundwater level transducers. 9 Currently, transducers record groundwater elevation and temperature readings on a 20 minute time interval. However it is anticipated that during the later half of 2009, this time interval may be adjusted.
in Appendix C. 6 Refer to the "Final Quarterly Long-Term Groundwater Monitoring Report Q2-Q4 2007 (Report No. 1)," dated May 2008 for Site background information and a description of the environmental setting. 7 Hydrogeologic Site Investigation Report, January 7, 2008, prepared by GZA GeoEnvironmental, Inc, on behalf of Enercon Services, Inc., for Entergy Nuclear Northeast, Indian Point Energy Center, 450 Broadway, Buchanan, NY 10511. 8 It is anticipated that subsequent to the Q2 2009 quarterly monitoring report, the transducer monitoring program will be reduced to only a select set of locations that will continue to be routinely monitored with groundwater level transducers. 9 Currently, transducers record groundwater elevation and temperature readings on a 20 minute time interval. However it is anticipated that during the later half of 2009, this time interval may be adjusted.
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: 10. Table 1 lists the monitoring installations sampled, the sampling depths and elevations within sampling installations, and the sampling method and equipment used. In general, GZA implemented two basic methods of sampling to collect representative groundwater samples: the Low Flow method and a modified well volume purge method. The Low Flow method allows collection of representative groundwater samples from discrete sampling zones within a monitoring installation, while limiting the accumulation of wastewater
: 10. Table 1 lists the monitoring installations sampled, the sampling depths and elevations within sampling installations, and the sampling method and equipment used. In general, GZA implemented two basic methods of sampling to collect representative groundwater samples: the Low Flow method and a modified well volume purge method. The Low Flow method allows collection of representative groundwater samples from discrete sampling zones within a monitoring installation, while limiting the accumulation of wastewater
: 11. As agreed by Entergy Nuclear Northeast, the NRC, NYSDEC, and GZA, the modified traditional purge method 12 allows for the collection of a representative groundwater sample from a monitoring installation after purging 1.5 volumes of water. We implemented this method in wells where low flow sampling was not practical
: 11. As agreed by Entergy Nuclear Northeast, the NRC, NYSDEC, and GZA, the modified traditional purge method 12 allows for the collection of a representative groundwater sample from a monitoring installation after purging 1.5 volumes of water. We implemented this method in wells where low flow sampling was not practical
: 13. Sampling Data Sheets summarizing water quality data and sampling information are presented in Appendix D. With all of the above sampling methods, GZA used dedicated sampling equipment, including polyethylene and/or nylon tubing and submersible electric pumps to the extent practical. The use of dedicated sampling equipment limits the possibility of cross-contamination between monitoring installations and/or individual multi-level samples within a single installation. Refer to Table 1 for a summary of the sampling methods, equipment, frequency, and depths employed during this quarter's groundwater monitoring round.
: 13. Sampling Data Sheets summarizing water quality data and sampling information are presented in Appendix D. With all of the above sampling methods, GZA used dedicated sampling equipment, including polyethylene and/or nylon tubing and submersible electric pumps to the extent practical. The use of dedicated sampling equipment limits the possibility of cross-contamination between monitoring installations and/or individual multi-level samples within a single installation. Refer to Table 1 for a summary of the sampling methods, equipment, frequency, and depths employed during this quarter's groundwater monitoring round.  
2.3 Vapor Containment Building Foundation Drain Sampling GZA attempted to collect water samples from three manholes (B-1, B-6, and MH-5) on-Site to characterize discharge from foundation drains around and below the Unit 2 and 3 Vapor Containment Structures (the drains include both the foundation drains around the building periphery ("curtain drains") as well as those around the sumps near the middle of the structures). These drains are being used as an integral part of the early leak detection monitoring network. However, due to plant security precautions, GZA was unable to access these sampling points. The manholes at these catch basins are currently welded shut, as they were during the previous quarter (Q4 08). Entergy recently modified the covers of these three manholes to allow access to these sampling locations without compromising plant security and samples were collected from these locations during the Q2-2009 sampling round. Prior to Q3 08, GZA was able to sample the east drain line in manhole MH-5 to capture drainage from the Unit 2 Vapor Containment Foundation Drains. GZA also previously sampled the east drain line in manhole B-1 to capture drainage from the Unit 3 Vapor Containment South Curtain Drain. In addition, GZA sampled the manhole B-6 during earlier sampling quarters to capture drainage from the Unit 3 Vapor Containment North Curtain Drain and Reactor Sump  
 
===2.3 Vapor===
Containment Building Foundation Drain Sampling GZA attempted to collect water samples from three manholes (B-1, B-6, and MH-5) on-Site to characterize discharge from foundation drains around and below the Unit 2 and 3 Vapor Containment Structures (the drains include both the foundation drains around the building periphery ("curtain drains") as well as those around the sumps near the middle of the structures). These drains are being used as an integral part of the early leak detection monitoring network. However, due to plant security precautions, GZA was unable to access these sampling points. The manholes at these catch basins are currently welded shut, as they were during the previous quarter (Q4 08). Entergy recently modified the covers of these three manholes to allow access to these sampling locations without compromising plant security and samples were collected from these locations during the Q2-2009 sampling round. Prior to Q3 08, GZA was able to sample the east drain line in manhole MH-5 to capture drainage from the Unit 2 Vapor Containment Foundation Drains. GZA also previously sampled the east drain line in manhole B-1 to capture drainage from the Unit 3 Vapor Containment South Curtain Drain. In addition, GZA sampled the manhole B-6 during earlier sampling quarters to capture drainage from the Unit 3 Vapor Containment North Curtain Drain and Reactor Sump  


Foundation Drain
Foundation Drain
: 14.
: 14.
10 Refer to Section 4.3 of the Final 2007 Quarterly Long-Term Groundwater Monitoring Report No. 1, dated May 2008, for sampling method and equipment selection rationale. 11 As described in: Low-Flow Sample Collection, GZA, 7/18/2007 12 As described in: Modified Traditional Groundwater Sample Collection, GZA, 7/18/2007 13 When external factors (such as well-surface-flooding from stormwater runoff or overland flow of plant component leaks) might have infiltrated the top of the well and impacted ambient groundwater conditions at a specific sampling location, GZA typically purged three to five volumes of water (using the modified traditional purge method) prior to collection of a sample to attempt to obtain a representative groundwater sample. 14 During early attempts to collect a discrete sample specifically representative of the east drain line in B-6, this catch basin was used as a clean water discharge point for some unidentified plant work. As a result, the height of the water within the manhole was Section 2.0 Scope of Work June 22, 2010 Page 2-3 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 2.4 Preventative Maintenance GZA performed general wellhead maintenance tasks, such as housekeeping of well vaults and roadboxes, and replacement of dedicated sampling equipment, tubing and transducers. In addition, LaFarge well LAF-002 (also initially referred to as MW-2), located at the LaFarge Gypsum Property to the south of Indian IPEC, was refurbished between November 24 th and 25 th, 2008. This well has been incorporated as a boundary well within the Long Term Monitoring Program at the request of the NRC. A description of the refurbishment activities is  
10 Refer to Section 4.3 of the Final 2007 Quarterly Long-Term Groundwater Monitoring Report No. 1, dated May 2008, for sampling method and equipment selection rationale. 11 As described in: Low-Flow Sample Collection, GZA, 7/18/2007 12 As described in: Modified Traditional Groundwater Sample Collection, GZA, 7/18/2007 13 When external factors (such as well-surface-flooding from stormwater runoff or overland flow of plant component leaks) might have infiltrated the top of the well and impacted ambient groundwater conditions at a specific sampling location, GZA typically purged three to five volumes of water (using the modified traditional purge method) prior to collection of a sample to attempt to obtain a representative groundwater sample. 14 During early attempts to collect a discrete sample specifically representative of the east drain line in B-6, this catch basin was used as a clean water discharge point for some unidentified plant work. As a result, the height of the water within the manhole was Section 2.0 Scope of Work June 22, 2010 Page 2-3 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92                                                                                                                                                                          
 
===2.4 Preventative===
Maintenance GZA performed general wellhead maintenance tasks, such as housekeeping of well vaults and roadboxes, and replacement of dedicated sampling equipment, tubing and transducers. In addition, LaFarge well LAF-002 (also initially referred to as MW-2), located at the LaFarge Gypsum Property to the south of Indian IPEC, was refurbished between November 24 th and 25 th, 2008. This well has been incorporated as a boundary well within the Long Term Monitoring Program at the request of the NRC. A description of the refurbishment activities is  


provided in Appendix I Mid-Quarter Sample Collection During the spring of 2008, Indian Point Energy Center began moving spent fuel in Unit 1. Therefore, samples in addition to those collected for the routine quarterly sampling round were obtained from selected wells associated with Unit 1 to increase the monitoring frequency proximate to these events. Following the Q1 09 sampling event, additional groundwater samples were collected from MW-42-49, MW-50-66, MW-53-120, and IP1-CSS during the approximate halfway point between sampling quarters. The results of the mid-quarter samples collected after Q1 2009 are presented in Section 3.4 along with the quarterly data. Sampling Data Sheets summarizing water quality data and sampling information are presented in  
provided in Appendix I Mid-Quarter Sample Collection During the spring of 2008, Indian Point Energy Center began moving spent fuel in Unit 1. Therefore, samples in addition to those collected for the routine quarterly sampling round were obtained from selected wells associated with Unit 1 to increase the monitoring frequency proximate to these events. Following the Q1 09 sampling event, additional groundwater samples were collected from MW-42-49, MW-50-66, MW-53-120, and IP1-CSS during the approximate halfway point between sampling quarters. The results of the mid-quarter samples collected after Q1 2009 are presented in Section 3.4 along with the quarterly data. Sampling Data Sheets summarizing water quality data and sampling information are presented in  
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. above the drain lines, which only permitted collection of a composite sample. By mid-year 2008, these discharge operations had ceased, and during the Q2 2008 attempt to collect a sample from th is location, GZA observed no flow of water through this drain. It is possible that flow within this drain is being restricted by sediment further upgradient in the drain.
. above the drain lines, which only permitted collection of a composite sample. By mid-year 2008, these discharge operations had ceased, and during the Q2 2008 attempt to collect a sample from th is location, GZA observed no flow of water through this drain. It is possible that flow within this drain is being restricted by sediment further upgradient in the drain.
FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
June 22, 2010 Page 3-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 3.0 DATA EVALUATION The Long Term Monitoring Program was designed to provide data to address four main objectives:  Monitor groundwater flow rate and radionuclide concentrations to both detect and characterize current and potential future off-Site groundwater contaminant migration to the Hudson River, both via direct groundwater discharge to the river and through infiltration into the Discharge Canal, from abnormal radionuclide releases of liquid effluents, so as to allow computation of potential radiation dose to the public from these releases;  Mo nitor groundwater proximate to Systems, Structures and Components (SSCs) which exhibit a credible probability of resulting in a visually undetected release of radionuclides to the subsurface carrying an activity level of significance;  Monitor groundwater along the property boundary to confirm that contaminated groundwater is not migrating off of the property to locations other than the river; and  Monitor the groundwater plumes identified on-Site to demonstrate overall reductions in total activity over time as is consistent with the requirements of Monitored Natural Attenuation (MNA) 15, the selected remediation for the IPEC Site. These objectives are consistent with and fully encompass the guidance provided in the NEI Groundwater Protection Initiative (GPI). The following sections provide data analyses to address these four objectives.
June 22, 2010 Page 3-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 3.0 DATA EVALUATION The Long Term Monitoring Program was designed to provide data to address four main objectives:  Monitor groundwater flow rate and radionuclide concentrations to both detect and characterize current and potential future off-Site groundwater contaminant migration to the Hudson River, both via direct groundwater discharge to the river and through infiltration into the Discharge Canal, from abnormal radionuclide releases of liquid effluents, so as to allow computation of potential radiation dose to the public from these releases;  Mo nitor groundwater proximate to Systems, Structures and Components (SSCs) which exhibit a credible probability of resulting in a visually undetected release of radionuclides to the subsurface carrying an activity level of significance;  Monitor groundwater along the property boundary to confirm that contaminated groundwater is not migrating off of the property to locations other than the river; and  Monitor the groundwater plumes identified on-Site to demonstrate overall reductions in total activity over time as is consistent with the requirements of Monitored Natural Attenuation (MNA) 15, the selected remediation for the IPEC Site. These objectives are consistent with and fully encompass the guidance provided in the NEI Groundwater Protection Initiative (GPI). The following sections provide data analyses to address these four objectives.  
3.1 Groundwater Mass Flux The following sections describe the computation of groundwater flow (mass flux) through the Site using the Precipitation Mass Balance Model and the continuing verification of the calibration of this model based on the most current quarterly groundwater elevation monitoring data.
 
3.1.1 Groundwater Mass Flux Computation As presented in the Hydrogeologic Site Investigation Report, the groundwater flow in both the upper and lower flow zones is toward the power block area from the North, East and South, with subsequent discharge to the Hudson River to the West. A corollary to this conclusion is that there is no groundwater flow, and thus no off-Site radionuclide migration from the power block area to the North, East or South. Groundwater flow associated with infiltration from the watershed may be as deep as 350 feet, but still ultimately discharges to the river. To estimate groundwater flow (i.e., groundwater mass flux) beneath the Site, an analytical groundwater flow model was constructed based on a Precipitation Mass Balance Model using the Q2 2007 (reference) data set. This model is based on the precept that, on a long term average, the groundwater flowing through and discharging from the aquifer is equal to the watershed infiltration recharge. The Precipitation Mass Balance Model was also calibrated to groundwater fluxes based on a Darcy's Law Model with gradients also derived from Q2 2007 15 The selection of MNA as the remedial strategy for the Site is discussed further in the Hydrogeologic Site Investigation Report.
===3.1 Groundwater===
Mass Flux The following sections describe the computation of groundwater flow (mass flux) through the Site using the Precipitation Mass Balance Model and the continuing verification of the calibration of this model based on the most current quarterly groundwater elevation monitoring data.  
 
====3.1.1 Groundwater====
Mass Flux Computation As presented in the Hydrogeologic Site Investigation Report, the groundwater flow in both the upper and lower flow zones is toward the power block area from the North, East and South, with subsequent discharge to the Hudson River to the West. A corollary to this conclusion is that there is no groundwater flow, and thus no off-Site radionuclide migration from the power block area to the North, East or South. Groundwater flow associated with infiltration from the watershed may be as deep as 350 feet, but still ultimately discharges to the river. To estimate groundwater flow (i.e., groundwater mass flux) beneath the Site, an analytical groundwater flow model was constructed based on a Precipitation Mass Balance Model using the Q2 2007 (reference) data set. This model is based on the precept that, on a long term average, the groundwater flowing through and discharging from the aquifer is equal to the watershed infiltration recharge. The Precipitation Mass Balance Model was also calibrated to groundwater fluxes based on a Darcy's Law Model with gradients also derived from Q2 2007 15 The selection of MNA as the remedial strategy for the Site is discussed further in the Hydrogeologic Site Investigation Report.
Section 3.0 Data Evaluation June 22, 2010 Page 3-2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 (June 1, 2007) groundwater elevation contours
Section 3.0 Data Evaluation June 22, 2010 Page 3-2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 (June 1, 2007) groundwater elevation contours
: 16. This calibration not only verified the reasonableness of the overall groundwater flow rates predicted by the Precipitation Mass Balance Model, but also allowed further discretization of the groundwater flow into upper and lower flow zones as well as flow volumes upgradient and downgradient of the Discharge Canal. The mass balance approach recognizes that the only substantial source of recharge to the aquifer is areal recharge derived from precipitation. The previous ten year average for precipitation measured at the Site is 36 inches per year. Based on a USGS infiltration study 17 as well as the model calibration cited above, approximately 29 percent of the precipitation falling on pervious surfaces over the Site watershed area results in infiltration recharge to the groundwater. This computation indicates that the groundwater recharge rate is approximately 10.5 inches per year for the 2008/2009 monitoring period. Applying this information to the pervious surfaces within the six individual groundwater flow zones shown on Figure 4, it is estimated that approximately 5.2 gpm of groundwater flows into the Discharge Canal from the upper and lower zones. In addition, approximately 5.8 and 7.7 gpm of groundwater flows into the Hudson River from the upper and lower zones, respectively. Furthermore, the mass balance model accounts for storm water discharge 18 to both the Discharge Canal and directly to the Hudson River which are estimated to be 44 and 4 gpm, respectively. These flows can be further subdivided into flow zones as shown in the table  
: 16. This calibration not only verified the reasonableness of the overall groundwater flow rates predicted by the Precipitation Mass Balance Model, but also allowed further discretization of the groundwater flow into upper and lower flow zones as well as flow volumes upgradient and downgradient of the Discharge Canal. The mass balance approach recognizes that the only substantial source of recharge to the aquifer is areal recharge derived from precipitation. The previous ten year average for precipitation measured at the Site is 36 inches per year. Based on a USGS infiltration study 17 as well as the model calibration cited above, approximately 29 percent of the precipitation falling on pervious surfaces over the Site watershed area results in infiltration recharge to the groundwater. This computation indicates that the groundwater recharge rate is approximately 10.5 inches per year for the 2008/2009 monitoring period. Applying this information to the pervious surfaces within the six individual groundwater flow zones shown on Figure 4, it is estimated that approximately 5.2 gpm of groundwater flows into the Discharge Canal from the upper and lower zones. In addition, approximately 5.8 and 7.7 gpm of groundwater flows into the Hudson River from the upper and lower zones, respectively. Furthermore, the mass balance model accounts for storm water discharge 18 to both the Discharge Canal and directly to the Hudson River which are estimated to be 44 and 4 gpm, respectively. These flows can be further subdivided into flow zones as shown in the table  


in Appendix F.
in Appendix F.  
3.1.2 Quarterly Groundwater Mass Flux Calibration As indicated above, the Precipitation Mass Balance Model was calibrated to groundwater fluxes computed based on a Darcy's Law Model. The calibration compared the total groundwater flow  
 
====3.1.2 Quarterly====
Groundwater Mass Flux Calibration As indicated above, the Precipitation Mass Balance Model was calibrated to groundwater fluxes computed based on a Darcy's Law Model. The calibration compared the total groundwater flow  


values for each of the six flow zones computed independently 19 using the Precipitation Mass Balance Model and the Darcy's Law Model. The initial calibration was performed using gradients derived from contours of groundwater elevation measured on June, 1 2007, as described in the Hydrogeologic Site Investigation Report. As part of the initial portions of the Long Term Monitoring Program 20, this calibration is being evaluated quarterly to verify that seasonal changes in groundwater elevations do not materially impact the calibration. Therefore, quarterly groundwater elevations measured with pressure transducers at representative low river tides 21 have been used to construct groundwater elevation contours for the upper groundwater flow zone (water table contours) and the lower 16 Refer to the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008. 17 USGS. Water Use, Ground-Water Recharge and Availability, and Quality of Water in the Greenwich Area, Fairfield County, Connecticut and Westchester County, New York, 2000-2002.
values for each of the six flow zones computed independently 19 using the Precipitation Mass Balance Model and the Darcy's Law Model. The initial calibration was performed using gradients derived from contours of groundwater elevation measured on June, 1 2007, as described in the Hydrogeologic Site Investigation Report. As part of the initial portions of the Long Term Monitoring Program 20, this calibration is being evaluated quarterly to verify that seasonal changes in groundwater elevations do not materially impact the calibration. Therefore, quarterly groundwater elevations measured with pressure transducers at representative low river tides 21 have been used to construct groundwater elevation contours for the upper groundwater flow zone (water table contours) and the lower 16 Refer to the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008. 17 USGS. Water Use, Ground-Water Recharge and Availability, and Quality of Water in the Greenwich Area, Fairfield County, Connecticut and Westchester County, New York, 2000-2002.
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Figure 5A of this quarterly report, and the rational for the selection of these specific individual transducer locations is provided in Appendix J. 3.2 Groundwater Sampling  The following sections describe the groundwater sampling results and associated QA/QC protocols.
Figure 5A of this quarterly report, and the rational for the selection of these specific individual transducer locations is provided in Appendix J. 3.2 Groundwater Sampling  The following sections describe the groundwater sampling results and associated QA/QC protocols.
25 The dose computations are currently all performed with the flows computed for the Q2 2007 data set. It is noted that the increase in the Q1 2009 groundwater flow in the Unit 1/2 zone, which encompasses the majority of the radionuclide migration to th e river, is only 5% higher than the reference flow. Therefore the total dose computed with this slightly higher groundwater flow would still only be a small fraction of the permitted value. Therefore, the current dose computations have again been based on the Q 2 07 data.
25 The dose computations are currently all performed with the flows computed for the Q2 2007 data set. It is noted that the increase in the Q1 2009 groundwater flow in the Unit 1/2 zone, which encompasses the majority of the radionuclide migration to th e river, is only 5% higher than the reference flow. Therefore the total dose computed with this slightly higher groundwater flow would still only be a small fraction of the permitted value. Therefore, the current dose computations have again been based on the Q 2 07 data.
Section 3.0 Data Evaluation June 22, 2010 Page 3-5 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 3.2.1 Groundwater Sampling Results Groundwater samples collected on behalf of Entergy during Q1 2009 were analyzed for radionuclides including Tritium, Sr-90, Cs-137, Co-60, and Ni-63 at GEL Laboratories
Section 3.0 Data Evaluation June 22, 2010 Page 3-5 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92  
 
====3.2.1 Groundwater====
Sampling Results Groundwater samples collected on behalf of Entergy during Q1 2009 were analyzed for radionuclides including Tritium, Sr-90, Cs-137, Co-60, and Ni-63 at GEL Laboratories
: 26. Table 3 presents the Q1 2009 analytical results specific to Tritium, Sr-90, Cs-137, Co-60, and Ni-63. The rolling yearly averages, which are calculated using all the valid data from the previous year [Q2 08 through Q1-09] including mid-quarter and confirmatory samples, are also  
: 26. Table 3 presents the Q1 2009 analytical results specific to Tritium, Sr-90, Cs-137, Co-60, and Ni-63. The rolling yearly averages, which are calculated using all the valid data from the previous year [Q2 08 through Q1-09] including mid-quarter and confirmatory samples, are also  


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* A radionuclide is positively detected when the result is greater than or equal to the MDC and 3 times the 1 sigma uncertainty. ** The values of 1000 and 2000 pCi/L for H-3 and 2 pCi/L for Sr-90 have been chosen to be low enough to result in timely detection of a new release or change to an existing release and still be outside the normal expected range of sample results at these locations, to the extent possible with the currently available data over time. *** Any positively detected radionuclide that has a result greater than 2 times the average from the previous year. The IL is not reached until an H-3 result is greater than 1000 pCi/L or a Sr-90 result is greater than 2 pCi/L. In the event that the analytical results of a groundwater sample exceed the designated I.L., the following series of actions will be considered:
* A radionuclide is positively detected when the result is greater than or equal to the MDC and 3 times the 1 sigma uncertainty. ** The values of 1000 and 2000 pCi/L for H-3 and 2 pCi/L for Sr-90 have been chosen to be low enough to result in timely detection of a new release or change to an existing release and still be outside the normal expected range of sample results at these locations, to the extent possible with the currently available data over time. *** Any positively detected radionuclide that has a result greater than 2 times the average from the previous year. The IL is not reached until an H-3 result is greater than 1000 pCi/L or a Sr-90 result is greater than 2 pCi/L. In the event that the analytical results of a groundwater sample exceed the designated I.L., the following series of actions will be considered:
Systems Bldg 33' area given increased Sphere Valve Gallery sump pump activation on the 14' level. During fuel removal, IPEC continued to add water to maintain the pool level at 55' until October when all the fuel was removed and the pools were drained. Given the anticipated increased leakage, GZA collected Unit 1 "Mid-Quarter" groundwater samples from monitoring wells U1-CSS, MW-42-49, MW-50-66, and MW-53-120 on May 12 & 13, 2008, September 5 & 8, 2008, and November 17 & 19 2008 to evaluate the associated subsurface impact of fuel removal activities. These wells were again sampled as part of the Q1-2009 sampling round, with additional Mid-Quarter samples subsequently taken between March 16 and March 18, 2009. 31 Previously ILs were calculated based on the analytical results from the quarterly sampling rounds and excluded mid-quarter a nd confirmatory sample analytical results in the calculation. 32 If a confirmatory analytical result confirms the original analytical result is false, then only the confirmatory result is utilized in the yearly IL calculation. If a confirmatory analytical result confirms the original result is valid, then both the original and t he confirmatory result are utilized in the yearly IL calculation. 33 If an aliquot analytical result confirms the original analytical result is false, then only the aliquot result is utilized in the yearly IL calculation. If an aliquot analytical result confirms the original result is valid, then the average of the original and the aliquot result are utilized in the yearly IL calculation.
Systems Bldg 33' area given increased Sphere Valve Gallery sump pump activation on the 14' level. During fuel removal, IPEC continued to add water to maintain the pool level at 55' until October when all the fuel was removed and the pools were drained. Given the anticipated increased leakage, GZA collected Unit 1 "Mid-Quarter" groundwater samples from monitoring wells U1-CSS, MW-42-49, MW-50-66, and MW-53-120 on May 12 & 13, 2008, September 5 & 8, 2008, and November 17 & 19 2008 to evaluate the associated subsurface impact of fuel removal activities. These wells were again sampled as part of the Q1-2009 sampling round, with additional Mid-Quarter samples subsequently taken between March 16 and March 18, 2009. 31 Previously ILs were calculated based on the analytical results from the quarterly sampling rounds and excluded mid-quarter a nd confirmatory sample analytical results in the calculation. 32 If a confirmatory analytical result confirms the original analytical result is false, then only the confirmatory result is utilized in the yearly IL calculation. If a confirmatory analytical result confirms the original result is valid, then both the original and t he confirmatory result are utilized in the yearly IL calculation. 33 If an aliquot analytical result confirms the original analytical result is false, then only the aliquot result is utilized in the yearly IL calculation. If an aliquot analytical result confirms the original result is valid, then the average of the original and the aliquot result are utilized in the yearly IL calculation.
Section 3.0 Data Evaluation June 22, 2010 Page 3-8 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92  Contact the laboratory to verify that all quality control checks were satisfactory, sufficient sample volume was used; required MDC's were met, etc.;  Re-analyze aliquots of the original sample;  Re-sample the location to verify the result;  Increase the frequency of sampling for this location;  Initiate an investigation utilizing Entergy's corrective action program and related resources as appropriate (e.g. site engineering / radiation protection); and  Initiation of source/ground water remediation techniques commensurate with the potential dose impact analyses and good environmental stewardship.
Section 3.0 Data Evaluation June 22, 2010 Page 3-8 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92  Contact the laboratory to verify that all quality control checks were satisfactory, sufficient sample volume was used; required MDC's were met, etc.;  Re-analyze aliquots of the original sample;  Re-sample the location to verify the result;  Increase the frequency of sampling for this location;  Initiate an investigation utilizing Entergy's corrective action program and related resources as appropriate (e.g. site engineering / radiation protection); and  Initiation of source/ground water remediation techniques commensurate with the potential dose impact analyses and good environmental stewardship.  
3.4.1 Previous Q4-2008 Investigation Level Exceedances As indicated in the Q4 2008 Quarterly Monitoring Report, a comparison of the Q4 2008 and Post Q4 08 Mid-Quarter analytical results to their respective I.L.
 
====3.4.1 Previous====
Q4-2008 Investigation Level Exceedances As indicated in the Q4 2008 Quarterly Monitoring Report, a comparison of the Q4 2008 and Post Q4 08 Mid-Quarter analytical results to their respective I.L.
34 values shows that the I.L.s were initially met in four samples. One of these samples (MW-67-39) was reanalyzed, and the results were found to no longer exceed the I.L.s
34 values shows that the I.L.s were initially met in four samples. One of these samples (MW-67-39) was reanalyzed, and the results were found to no longer exceed the I.L.s
: 35. The remaining three samples (MW-36-52, MW-42-49, and MW-54-58) are discussed individually in the sections below.
: 35. The remaining three samples (MW-36-52, MW-42-49, and MW-54-58) are discussed individually in the sections below.
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Section 3.0 Data Evaluation June 22, 2010 Page 3-13 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 from the upcoming quarterly monitoring round will be utilized to assess an upward trend of Strontium levels at this location. To this end, and as discussed in Section 3.5 - Plume Monitored Natural Attenuation, the behavior of the Strontium increases due to defueling of Unit 1 are being specifically monitored, as summarized on a new figure developed for this, the Q1 2009 quarterly monitoring report (Figure 7A). U1-NCD AND U1-SFDS. As agreed with the NRC during the Deviation Memo Closeout Meeting of August 18 and 19, 2009, sampling of the Unit 1 North Curtain Drain (U1-NCD) and the Unit 1 Sphere Foundation Drain Sump (U1-SFDS) will be formally included as part of the Long Term Monitoring Program. These drains have historically been assumed to collect some groundwater contaminated with Tritium from the Unit 2 SFP. This conclusion was validated by the tracer test conducted as part of the hydrogeologic site investigation (see the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008). The amount of quarterly sampling data is currently insufficient to set Tritium I.L.s for these drains. However, visual inspection of the existing data was performed and no noteworthy increases in Tritium levels were observed. In addition, given the location of these Unit 1 drains, they should also prove useful for monitoring Strontium levels associated with the Unit 1 defueling. As such, the data from these drains has also been included on Figure 7A. Three critical conclusions can be drawn from the above summarized data and analyses: 1) the current CSM for the IPEC site provides a good basis for the design of the Long Term Monitoring Program; 2) the procedures and rational used for selecting monitoring locations for leak detection have been further validated given the clear detection of the confirmed Unit 1 SFPs increased leakage during fuel removal and the detection of Tritium leakage from the waste distillation tank valves within the Unit 1 FSB; and 3) increases in radionuclide levels following a documented leak take longer to materialize in the groundwater than might otherwise be  
Section 3.0 Data Evaluation June 22, 2010 Page 3-13 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 from the upcoming quarterly monitoring round will be utilized to assess an upward trend of Strontium levels at this location. To this end, and as discussed in Section 3.5 - Plume Monitored Natural Attenuation, the behavior of the Strontium increases due to defueling of Unit 1 are being specifically monitored, as summarized on a new figure developed for this, the Q1 2009 quarterly monitoring report (Figure 7A). U1-NCD AND U1-SFDS. As agreed with the NRC during the Deviation Memo Closeout Meeting of August 18 and 19, 2009, sampling of the Unit 1 North Curtain Drain (U1-NCD) and the Unit 1 Sphere Foundation Drain Sump (U1-SFDS) will be formally included as part of the Long Term Monitoring Program. These drains have historically been assumed to collect some groundwater contaminated with Tritium from the Unit 2 SFP. This conclusion was validated by the tracer test conducted as part of the hydrogeologic site investigation (see the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008). The amount of quarterly sampling data is currently insufficient to set Tritium I.L.s for these drains. However, visual inspection of the existing data was performed and no noteworthy increases in Tritium levels were observed. In addition, given the location of these Unit 1 drains, they should also prove useful for monitoring Strontium levels associated with the Unit 1 defueling. As such, the data from these drains has also been included on Figure 7A. Three critical conclusions can be drawn from the above summarized data and analyses: 1) the current CSM for the IPEC site provides a good basis for the design of the Long Term Monitoring Program; 2) the procedures and rational used for selecting monitoring locations for leak detection have been further validated given the clear detection of the confirmed Unit 1 SFPs increased leakage during fuel removal and the detection of Tritium leakage from the waste distillation tank valves within the Unit 1 FSB; and 3) increases in radionuclide levels following a documented leak take longer to materialize in the groundwater than might otherwise be  


expected.
expected.  
3.4.4 Conclusions - Boundary and SSC Leak Detection Monitoring Recognizing that measured activities in the Off-Site and On-Site Boundary Wells were below I.L. levels, this overall data set continues to demonstrate that radionuclides are migrating toward the Hudson River to the West, and are not migrating off of the property to the North, East or  
 
====3.4.4 Conclusions====
- Boundary and SSC Leak Detection Monitoring Recognizing that measured activities in the Off-Site and On-Site Boundary Wells were below I.L. levels, this overall data set continues to demonstrate that radionuclides are migrating toward the Hudson River to the West, and are not migrating off of the property to the North, East or  


South, as expected given groundwater flow directions from the property periphery toward the power block area. Given the analyses discussed above, there is also no compelling reason to believe that any new undetected leaks have developed in the SSCs monitored relative to Unit 2 or 3. With the exception of locations MW-32-59, MW-42-49, and MW-53-82, no Tritium levels met their I.L.s and the overall, continued reduction in Tritium levels in the Unit 2 plume 40 is consistent with a conclusion that the Unit 2 SFP had ceased leaking after the transfer canal "pin hole leak" was repaired in late 2007. The recent increase in Tritium levels at locations MW-42-49 and MW-53-82 are likely attributed to an observed leak in the waste distillation tank valving within the Unit 1 FSB rather than increased leakage from the SSCs associated with Unit 2 and 3. The increase of Tritium levels at location MW-32-59 is inferred, in part based on the recent tracer data, to be associated with Tritium stored in the subsurface via natural and anthropogenic retention mechanisms
South, as expected given groundwater flow directions from the property periphery toward the power block area. Given the analyses discussed above, there is also no compelling reason to believe that any new undetected leaks have developed in the SSCs monitored relative to Unit 2 or 3. With the exception of locations MW-32-59, MW-42-49, and MW-53-82, no Tritium levels met their I.L.s and the overall, continued reduction in Tritium levels in the Unit 2 plume 40 is consistent with a conclusion that the Unit 2 SFP had ceased leaking after the transfer canal "pin hole leak" was repaired in late 2007. The recent increase in Tritium levels at locations MW-42-49 and MW-53-82 are likely attributed to an observed leak in the waste distillation tank valving within the Unit 1 FSB rather than increased leakage from the SSCs associated with Unit 2 and 3. The increase of Tritium levels at location MW-32-59 is inferred, in part based on the recent tracer data, to be associated with Tritium stored in the subsurface via natural and anthropogenic retention mechanisms
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While it is visually clear that this well has shown a major decrease in Tritium levels since containment of the 2005 shrinkage crack leak, the Mann-Kendall analysis only evaluates number of increases relative to decreases and does not weight the analysis relative to the magnitude of the change. As such, visual inspection demonstrates that this location actually exhibits an overall decreasing trend.      Inspection of the graph for MW-34 (Figure G-5) shows a distinctly increasing trend at early times, followed by a distinctly decreasing trend thereafter. Given the time frames and the downgradient location of this bedrock well, it is likely that the increasing trend delineates arrival of the leading edge of the plume generated by the 2005 shrinkage crack leak. The decreasing trend would then reflect dissipation of this plume after containment of this leak (this hypothesis is supported by similar trends in MW-33 and MW-35. As such, the MW-34 location actually exhibits a decreasing trend relative to plume behavior after containment of the 2005 shrinkage crack leak.
While it is visually clear that this well has shown a major decrease in Tritium levels since containment of the 2005 shrinkage crack leak, the Mann-Kendall analysis only evaluates number of increases relative to decreases and does not weight the analysis relative to the magnitude of the change. As such, visual inspection demonstrates that this location actually exhibits an overall decreasing trend.      Inspection of the graph for MW-34 (Figure G-5) shows a distinctly increasing trend at early times, followed by a distinctly decreasing trend thereafter. Given the time frames and the downgradient location of this bedrock well, it is likely that the increasing trend delineates arrival of the leading edge of the plume generated by the 2005 shrinkage crack leak. The decreasing trend would then reflect dissipation of this plume after containment of this leak (this hypothesis is supported by similar trends in MW-33 and MW-35. As such, the MW-34 location actually exhibits a decreasing trend relative to plume behavior after containment of the 2005 shrinkage crack leak.
55 MW-42 and MW-53 are located downgradient of the Unit 1 SFPs, rather than the Unit 2 SFP. However, these two wells were included in the analyses, as requested by NRC, due to the apparent contribution of Unit 2 SFP Tritium to the Unit 1 groundwater flow regime via vadose zone transport (see Figure 6). It is noted that any decreasing Tritium trend in this area due to the termination of leaks from the Unit 2 SFP could be masked by increased leakage of Tritiated water from the Unit 1 SFPs up throug h the completion of defueling in November 2008. 56 Monitoring locations MW-66 and MW-67, also located downgradient of the Unit 2 SFP, could not be included in the analyses because the data sets for these two wells do not yet include the required minimum number of data points (ten) for the Mann-Kendall analysis method.
55 MW-42 and MW-53 are located downgradient of the Unit 1 SFPs, rather than the Unit 2 SFP. However, these two wells were included in the analyses, as requested by NRC, due to the apparent contribution of Unit 2 SFP Tritium to the Unit 1 groundwater flow regime via vadose zone transport (see Figure 6). It is noted that any decreasing Tritium trend in this area due to the termination of leaks from the Unit 2 SFP could be masked by increased leakage of Tritiated water from the Unit 1 SFPs up throug h the completion of defueling in November 2008. 56 Monitoring locations MW-66 and MW-67, also located downgradient of the Unit 2 SFP, could not be included in the analyses because the data sets for these two wells do not yet include the required minimum number of data points (ten) for the Mann-Kendall analysis method.
Section 3.0 Data Evaluation June 22, 2010 Page 3-19 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 It is noted that the five remaining "no trend" wells are all associated with the two monitoring locations MW-31 and MW-32. These two locations are actually not located downgradient of the Unit 2 SFP from a saturated groundwater flow standpoint. Rather, they are generally located up- and cross-gradient. The final well, MW-31-85, is also part of this group. This is the only well for which the Mann-Kendall analysis indicates an increasing trend. The increasing trend in this well, as well as the behavior of the other wells in MW-31 and MW-32 are discussed in the following section. Based on the evaluation summarized above, the Mann-Kendall analyses of the individual depth intervals within the groundwater monitoring installations located downgradient of the Unit 2 SFP overwhelmingly support a conclusion that the Tritium plume has exhibited an overall decreasing trend with time since monitoring began.
Section 3.0 Data Evaluation June 22, 2010 Page 3-19 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 It is noted that the five remaining "no trend" wells are all associated with the two monitoring locations MW-31 and MW-32. These two locations are actually not located downgradient of the Unit 2 SFP from a saturated groundwater flow standpoint. Rather, they are generally located up- and cross-gradient. The final well, MW-31-85, is also part of this group. This is the only well for which the Mann-Kendall analysis indicates an increasing trend. The increasing trend in this well, as well as the behavior of the other wells in MW-31 and MW-32 are discussed in the following section. Based on the evaluation summarized above, the Mann-Kendall analyses of the individual depth intervals within the groundwater monitoring installations located downgradient of the Unit 2 SFP overwhelmingly support a conclusion that the Tritium plume has exhibited an overall decreasing trend with time since monitoring began.  
3.6.2 Individual Upgradient Monitoring Well Tritium and Tracer Analyses (MW-31 and MW-32)  As discussed in the preceding section, individual wells clearly exhibiting no trend or an increasing trend are confined to monitoring locations MW-31 and MW-32. These two monitoring installations are located up- and cross-gradient from the Unit 2 SFP. While not downgradient of the SFP from a groundwater flow perspective, Tritium leakage from the SFP can still migrate to these locations via vadose zone transport above the water table along dipping bedrock fractures. During the site investigation work, a tracer test was performed which clearly demonstrated that water released proximate to the SFP foundations (adjacent to MW-30) does migrate to the east and south past MW-31 and MW-32 prior to entering the water table, and then flows with the groundwater through these wells and then to the river to the west. This vadose zone migration mechanism is discussed more fully in the Hydrogeologic Site Investigation Report. In addition to the general persistence of Tritium throughout the Unit 2 plume 57 and the absents of a clear downward trend in Tritium concentrations with time at these two specific monitoring installations, the upper-most interval in both MW-31 and MW-32 have shown an abrupt increase in Tritium over the last two quarters (Q1 and Q2 58 09). These data can be explained by either: 1) an ongoing small episodic (< 5L/day) leak in the IP2- SFP; 2) a "retention mechanism" in the saturated and unsaturated zones under the IP2-SFP that can retain substantial volumes of highly Tritiated water (e.g., historic SFP leakage) for substantial amounts of time 59; and/or 3) a combination of the above
 
====3.6.2 Individual====
Upgradient Monitoring Well Tritium and Tracer Analyses (MW-31 and MW-32)  As discussed in the preceding section, individual wells clearly exhibiting no trend or an increasing trend are confined to monitoring locations MW-31 and MW-32. These two monitoring installations are located up- and cross-gradient from the Unit 2 SFP. While not downgradient of the SFP from a groundwater flow perspective, Tritium leakage from the SFP can still migrate to these locations via vadose zone transport above the water table along dipping bedrock fractures. During the site investigation work, a tracer test was performed which clearly demonstrated that water released proximate to the SFP foundations (adjacent to MW-30) does migrate to the east and south past MW-31 and MW-32 prior to entering the water table, and then flows with the groundwater through these wells and then to the river to the west. This vadose zone migration mechanism is discussed more fully in the Hydrogeologic Site Investigation Report. In addition to the general persistence of Tritium throughout the Unit 2 plume 57 and the absents of a clear downward trend in Tritium concentrations with time at these two specific monitoring installations, the upper-most interval in both MW-31 and MW-32 have shown an abrupt increase in Tritium over the last two quarters (Q1 and Q2 58 09). These data can be explained by either: 1) an ongoing small episodic (< 5L/day) leak in the IP2- SFP; 2) a "retention mechanism" in the saturated and unsaturated zones under the IP2-SFP that can retain substantial volumes of highly Tritiated water (e.g., historic SFP leakage) for substantial amounts of time 59; and/or 3) a combination of the above
: 60. While Tritium concentrations in the groundwater plume could be impacted by both an ongoing leak and the retention mechanisms cited above, tracer concentrations in the groundwater cannot be replenished by SFP leakage. Therefore, a 57 The Unit 2 Tritium plume has decreased in concentration relative to the samples taken just after identification of the 2005 shrinkage crack leak (the earliest samples taken from directly below the SFP yielded Tritium concentrations over 600,000 pCi/L, while more recent maximum concentrations have been below one-half of those initial concentrations), and continues to show a general trend of decreasing concentrations over time. However, the plume still exhibits concentrations greater than we can exp lain if there were no further Tritium inputs to the groundwater; i.e., the plume would attenuate more quickly than observed based on
: 60. While Tritium concentrations in the groundwater plume could be impacted by both an ongoing leak and the retention mechanisms cited above, tracer concentrations in the groundwater cannot be replenished by SFP leakage. Therefore, a 57 The Unit 2 Tritium plume has decreased in concentration relative to the samples taken just after identification of the 2005 shrinkage crack leak (the earliest samples taken from directly below the SFP yielded Tritium concentrations over 600,000 pCi/L, while more recent maximum concentrations have been below one-half of those initial concentrations), and continues to show a general trend of decreasing concentrations over time. However, the plume still exhibits concentrations greater than we can exp lain if there were no further Tritium inputs to the groundwater; i.e., the plume would attenuate more quickly than observed based on
: 1) Tritium's lack of partitioning to solid materials in the subsurface; 2) the crystalline nature and low storativity of the bedro ck; and 3) the computed and observed groundwater transport rate. 58 While this document is the Q1 09 report, some post-Q1 sampling data became available prior to report finalization. As such, data germane to the discussion of Unit 2 SFP integrity was included herewith.      59 This hypothesized "retention mechanism" is supported by our understanding of the construction methods used for the IP2-SFP and adjacent structures, evaluations of contaminant concentration variability trends over short timeframes and precipitation ev ents, as well as the original tracer test results, as further described in Sections 7.0 and 8.0 of the Hydrologic Site Investigation Report. 60 It is also recognized that the potential exists for a fourth potential source of Tritium; that is any other leak or spill ab ove the upgradient portions of the Unit 2 Tritium plume.
: 1) Tritium's lack of partitioning to solid materials in the subsurface; 2) the crystalline nature and low storativity of the bedro ck; and 3) the computed and observed groundwater transport rate. 58 While this document is the Q1 09 report, some post-Q1 sampling data became available prior to report finalization. As such, data germane to the discussion of Unit 2 SFP integrity was included herewith.      59 This hypothesized "retention mechanism" is supported by our understanding of the construction methods used for the IP2-SFP and adjacent structures, evaluations of contaminant concentration variability trends over short timeframes and precipitation ev ents, as well as the original tracer test results, as further described in Sections 7.0 and 8.0 of the Hydrologic Site Investigation Report. 60 It is also recognized that the potential exists for a fourth potential source of Tritium; that is any other leak or spill ab ove the upgradient portions of the Unit 2 Tritium plume.
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data:  Natural bedrock fractures in the unsaturated zone were computed to result in a bedrock porosity of 0.3%; of which 10% (0.03% porosity) were assumed to be dead ended and could provide storage capacity;  Construction blasting was assumed to increase the natural fracturing of the bedrock proximate to foundations by a factor of 3, with 2/3s of these fractures being dead ended  resulting in a storage porosity of 0.06%;  A six inch soil backfill thickness with a porosity of 20% was assumed to be saturated above foundation working mats. The above porosities were applied only to areas which could intercept Unit 2 SFP leakage prior to it reaching the water table. As such, zones utilized in the computation included:  Bedrock only between elevation 51 (bottom of Unit 2 SFP) and the water table elevation;  Bedrock only in areas above the upper portion of the plume which appear to be potential source areas;  Backfill above structure mud mats only in areas east of VCB and above plume; and  Soil in the immediate vicinity of MW-111. As such, potential storage volume not considered, so as to be conservative, include:  Any bedrock fractures or soil porosity within the saturated zone;  Any capillary retention in vadose zone soils;  Any mud mat not above the plume;  Any mud mat west of the VCB;  Anything above elevation 51'; and  Anything downgradient of MW-111 uncertainty associated with the conservative final reduction in the assumed leak rate of the weld imperfection (i.e., from 50 gpd to 5 gpd). 72 In addition to storage in the vadose zone, storage can also occur in dead end fractures, etc in the saturated zone.
data:  Natural bedrock fractures in the unsaturated zone were computed to result in a bedrock porosity of 0.3%; of which 10% (0.03% porosity) were assumed to be dead ended and could provide storage capacity;  Construction blasting was assumed to increase the natural fracturing of the bedrock proximate to foundations by a factor of 3, with 2/3s of these fractures being dead ended  resulting in a storage porosity of 0.06%;  A six inch soil backfill thickness with a porosity of 20% was assumed to be saturated above foundation working mats. The above porosities were applied only to areas which could intercept Unit 2 SFP leakage prior to it reaching the water table. As such, zones utilized in the computation included:  Bedrock only between elevation 51 (bottom of Unit 2 SFP) and the water table elevation;  Bedrock only in areas above the upper portion of the plume which appear to be potential source areas;  Backfill above structure mud mats only in areas east of VCB and above plume; and  Soil in the immediate vicinity of MW-111. As such, potential storage volume not considered, so as to be conservative, include:  Any bedrock fractures or soil porosity within the saturated zone;  Any capillary retention in vadose zone soils;  Any mud mat not above the plume;  Any mud mat west of the VCB;  Anything above elevation 51'; and  Anything downgradient of MW-111 uncertainty associated with the conservative final reduction in the assumed leak rate of the weld imperfection (i.e., from 50 gpd to 5 gpd). 72 In addition to storage in the vadose zone, storage can also occur in dead end fractures, etc in the saturated zone.
Section 3.0 Data Evaluation June 22, 2010 Page 3-25 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 The above outlined computations resulted in an estimated storage capacity of 38Ci. Tritium Storage Relative to Release Rate -  As discussed above, the Tritium in storage must be large relative to the release rate needed to maintain the plume. Otherwise, the yearly reduction in the stored activity would quickly begin to deplete the storage, which would then be reflected in a decreasing release rate, and thus an attenuating total plume activity (i.e., not constant as potentially indicated by the histogram). The total estimated Tritium activity in storage has been computed to be at least 4.5 Ci. This is the lower of the values estimated for Tritium released (4.5 Ci) and storage capacity (38 Ci). This value is 45 times larger than the estimated Tritium release rate required to maintain the Unit 2 Tritium plume in its current state. As such, it appears that there is more than sufficient Tritium in storage to maintain the existing plume for at least ten years. That is, after ten years of 0.1 Ci/yr storage depletion, 35 times the annual depletion would still remain. Therefore, one would not expect to see a substantial decrease in rate of release from storage over that period of time, and thus the plume activity should remain stable.
Section 3.0 Data Evaluation June 22, 2010 Page 3-25 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 The above outlined computations resulted in an estimated storage capacity of 38Ci. Tritium Storage Relative to Release Rate -  As discussed above, the Tritium in storage must be large relative to the release rate needed to maintain the plume. Otherwise, the yearly reduction in the stored activity would quickly begin to deplete the storage, which would then be reflected in a decreasing release rate, and thus an attenuating total plume activity (i.e., not constant as potentially indicated by the histogram). The total estimated Tritium activity in storage has been computed to be at least 4.5 Ci. This is the lower of the values estimated for Tritium released (4.5 Ci) and storage capacity (38 Ci). This value is 45 times larger than the estimated Tritium release rate required to maintain the Unit 2 Tritium plume in its current state. As such, it appears that there is more than sufficient Tritium in storage to maintain the existing plume for at least ten years. That is, after ten years of 0.1 Ci/yr storage depletion, 35 times the annual depletion would still remain. Therefore, one would not expect to see a substantial decrease in rate of release from storage over that period of time, and thus the plume activity should remain stable.
3.6.4 Collection Box Data  As discussed more fully in the Hydrogeologic Site investigation report, once the 2005 shrinkage crack leak was found, leakage from the crack was thereafter contained and collected, and no longer could/can enter the subsurface environment. The containment currently consists of a stainless steel box ("Collection Box") which was sealed to the concrete wall over the crack area in February 2006
 
====3.6.4 Collection====
Box Data  As discussed more fully in the Hydrogeologic Site investigation report, once the 2005 shrinkage crack leak was found, leakage from the crack was thereafter contained and collected, and no longer could/can enter the subsurface environment. The containment currently consists of a stainless steel box ("Collection Box") which was sealed to the concrete wall over the crack area in February 2006
: 73. This box is drained to a collection vessel where the volume is measured and routine samples are taken for analysis. As shown on Figure I-1, the leak rate has been episodic with typical prolonged rates of < 20mL/day, separated by relatively shorter periods of higher leak rates (>200 mL/day). The periods of higher leak rate generally appeared to occur during the spring, at least initially. It is important to view this leak rate in the context of the total leak volume, which has only been approximately 100 liters (about 25 gallons) over the four years since the leak was discovered, or a little over two fluid ounces per day. Once the high leak rate just after initial crack discovery subsided, the rate has averaged only a little over one fluid once per day. It is also important to note that there have been no detections of short lived radionuclides in the leakage water after the 2005 discovery of the leakage
: 73. This box is drained to a collection vessel where the volume is measured and routine samples are taken for analysis. As shown on Figure I-1, the leak rate has been episodic with typical prolonged rates of < 20mL/day, separated by relatively shorter periods of higher leak rates (>200 mL/day). The periods of higher leak rate generally appeared to occur during the spring, at least initially. It is important to view this leak rate in the context of the total leak volume, which has only been approximately 100 liters (about 25 gallons) over the four years since the leak was discovered, or a little over two fluid ounces per day. Once the high leak rate just after initial crack discovery subsided, the rate has averaged only a little over one fluid once per day. It is also important to note that there have been no detections of short lived radionuclides in the leakage water after the 2005 discovery of the leakage
: 74. In addition, while the Tritium activity increases with increased leak rate 75 , the levels are well below the activity in the pool
: 74. In addition, while the Tritium activity increases with increased leak rate 75 , the levels are well below the activity in the pool
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groundwater regime. The amount of Tritium activity flowing in the groundwater plume to the river has been computed to be approximately 0.1 Ci/yr. For pool water at 30,000,000 pCi/L, this equates to leak rate of approximately 10 L/day, or about 2.5 gallons per day (gpd). Therefore, it would be expected that a new leak at a rate of 2.5 gpd would double the Tritium levels in the plume over time. A doubling of the Tritium levels should be detectable once most of the wells exhibit this trend.
groundwater regime. The amount of Tritium activity flowing in the groundwater plume to the river has been computed to be approximately 0.1 Ci/yr. For pool water at 30,000,000 pCi/L, this equates to leak rate of approximately 10 L/day, or about 2.5 gallons per day (gpd). Therefore, it would be expected that a new leak at a rate of 2.5 gpd would double the Tritium levels in the plume over time. A doubling of the Tritium levels should be detectable once most of the wells exhibit this trend.
Therefore, the increasing trend in Tritium levels from a 2.5 gpd new leak may take an extended time to become evident. Another metric that can provide potential insight into the minimum potential leak rate is the tracer study previously conducted at the IPEC site. Based on a computation accounting for tracer and Tritium source concentrations, as compared to their respective detection limits, it appears that a Tritium leak of on the order of 5 gallons should be detectable at MW-32 (the monitoring installation with the greatest response during the tracer test). Other monitoring installations proximate to the Unit 2 SFP would therefore be expected to require higher leak rates based on the tracer test. In addition, it is also noted that the tracer injection was all introduced into the formation over a very short period of time. Therefore, a higher leak volume would likely be required if it occurred over a longer period of time. Finally, conclusions based on the tracer testing are all contingent on the location of the single tracer injection relative to the monitoring well locations. Leaks in other SFP locations would be expected to behave differently. Given the above data and analyses, and also accounting for the substantial level of uncertainty involved, we believe that a new leak of SFP water of a magnitude between 10 to 30 gpd should be detectable with the current Long Term Monitoring Program within a relatively few monitoring quarters.
Therefore, the increasing trend in Tritium levels from a 2.5 gpd new leak may take an extended time to become evident. Another metric that can provide potential insight into the minimum potential leak rate is the tracer study previously conducted at the IPEC site. Based on a computation accounting for tracer and Tritium source concentrations, as compared to their respective detection limits, it appears that a Tritium leak of on the order of 5 gallons should be detectable at MW-32 (the monitoring installation with the greatest response during the tracer test). Other monitoring installations proximate to the Unit 2 SFP would therefore be expected to require higher leak rates based on the tracer test. In addition, it is also noted that the tracer injection was all introduced into the formation over a very short period of time. Therefore, a higher leak volume would likely be required if it occurred over a longer period of time. Finally, conclusions based on the tracer testing are all contingent on the location of the single tracer injection relative to the monitoring well locations. Leaks in other SFP locations would be expected to behave differently. Given the above data and analyses, and also accounting for the substantial level of uncertainty involved, we believe that a new leak of SFP water of a magnitude between 10 to 30 gpd should be detectable with the current Long Term Monitoring Program within a relatively few monitoring quarters.      
3.6.6 Conclusions - Unit 2 SFP integrity  Overall, the preponderance of the data demonstrate that the Tritium activity in the plume has decreased substantially since groundwater monitoring began. However, it is also apparent that the rate of decrease is slower than would be expected if no additional Tritium was being 79 While this leakage cannot enter the environment, it is possible that other unidentified cracks exist in the SFP concrete wal l which could release similarly generated water into the subsurface formation.
 
====3.6.6 Conclusions====
- Unit 2 SFP integrity  Overall, the preponderance of the data demonstrate that the Tritium activity in the plume has decreased substantially since groundwater monitoring began. However, it is also apparent that the rate of decrease is slower than would be expected if no additional Tritium was being 79 While this leakage cannot enter the environment, it is possible that other unidentified cracks exist in the SFP concrete wal l which could release similarly generated water into the subsurface formation.
Section 3.0 Data Evaluation June 22, 2010 Page 3-28 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 released into the groundwater flow regime. The original CSM, as outlined in the Hydrogeologic Site Investigation Report, includes a "retention mechanism" that stores Tritiated water from historic liner leaks in the vadose zone, and then gradually and episodically releases some of this Tritium to the groundwater over time. The currently available data and analyses summarized herein, particularly including the most recent tracer data, provide further confirmation of the existence of this mechanism. This retention mechanism is expected to be capable of continuing to support the existing plume activity for at least five to ten years into the future, without any additional contribution of Tritium from a continuing or new leak in the Unit 2 fuel pool.
Section 3.0 Data Evaluation June 22, 2010 Page 3-28 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 released into the groundwater flow regime. The original CSM, as outlined in the Hydrogeologic Site Investigation Report, includes a "retention mechanism" that stores Tritiated water from historic liner leaks in the vadose zone, and then gradually and episodically releases some of this Tritium to the groundwater over time. The currently available data and analyses summarized herein, particularly including the most recent tracer data, provide further confirmation of the existence of this mechanism. This retention mechanism is expected to be capable of continuing to support the existing plume activity for at least five to ten years into the future, without any additional contribution of Tritium from a continuing or new leak in the Unit 2 fuel pool.
Therefore, the existing Tritium plume behavior does not provide a compelling argument that there is a continuing leak in the Unit 2 SFP. Given this conclusion and the recognition that Entergy has terminated all identified leaks in the Unit 2 SFP, the Unit 2 Tritium plume satisfies the requirements for Monitored Natural Attenuation (MNA). However, it is also recognized that there could still be a small continuing leak in the SFP that is also providing Tritium to the plume in addition to that released from the retention mechanism. The most recent data from the leak collection box indicates that pool water may be migrating around/through the liner and recharging the interstitial space between the liner and the SFP concrete wall. While any water that is released through the 2005 shrinkage crack in the wall is captured, contained and disposed of, and thus can not impact the groundwater, there may be other additional cracks in the wall which are not contained. If such additional cracks exist, it would not be unlikely that interstitial water could escape and eventually enter the groundwater regime (after also recharging the retention mechanism). While a continuing leak from the Unit 2 SFP cannot be ruled out, if such a leak(s) exists, it is small. Based on the analyses summarized above, we believe that the maximum leak rate from the Unit 2 SFP that could potentially remain undetected by the groundwater monitoring system is less than 10 to 30 gpd. It is also likely that if a small leak exists in the liner, it should not get worse with time, as based on liner evaluations previously conducted by Entergy
Therefore, the existing Tritium plume behavior does not provide a compelling argument that there is a continuing leak in the Unit 2 SFP. Given this conclusion and the recognition that Entergy has terminated all identified leaks in the Unit 2 SFP, the Unit 2 Tritium plume satisfies the requirements for Monitored Natural Attenuation (MNA). However, it is also recognized that there could still be a small continuing leak in the SFP that is also providing Tritium to the plume in addition to that released from the retention mechanism. The most recent data from the leak collection box indicates that pool water may be migrating around/through the liner and recharging the interstitial space between the liner and the SFP concrete wall. While any water that is released through the 2005 shrinkage crack in the wall is captured, contained and disposed of, and thus can not impact the groundwater, there may be other additional cracks in the wall which are not contained. If such additional cracks exist, it would not be unlikely that interstitial water could escape and eventually enter the groundwater regime (after also recharging the retention mechanism). While a continuing leak from the Unit 2 SFP cannot be ruled out, if such a leak(s) exists, it is small. Based on the analyses summarized above, we believe that the maximum leak rate from the Unit 2 SFP that could potentially remain undetected by the groundwater monitoring system is less than 10 to 30 gpd. It is also likely that if a small leak exists in the liner, it should not get worse with time, as based on liner evaluations previously conducted by Entergy
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S AND PLANNED ACTIVITIES ................................................................. 4-1 FINAL QUARTERLY LONG-TERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
S AND PLANNED ACTIVITIES ................................................................. 4-1 FINAL QUARTERLY LONG-TERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
June 22, 2009 Table of Contents 2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 TABLES Table 1Groundwater Sampling Methods, Equipment, Frequency, and DepthsTable 22009 1st Quarter Low Tide Groundwater ElevationsTable 32009 1st Groundwater Analytical Results and AveragesTable 42009 1st Quarter Groundwater Analytical ResultsTable 5Historic Groundwater Analytical Results FIGURES Figure 1Site Location PlanFigure 2Site PlanFigure 3Lower Hudson Valley Geologic MapFigure 4Current and Potential Future SSC Source LocationsFigure 4AUnit 3 - Cross-Section C-C"Figure 51st Quarter 2009 Shallow and Deep Groundwater ContoursFigure 5A1 st Quarter 2009 Long-Term Transducer Monitoring Evaluation MapFigure 61st Quarter 2009 Average Tritium Activity MapFigure 71st Quarter 2009 Average Strontium-90 Activity MapFigure 7ASr-90 Baseline Analysis - Unit 1 Defueling EvaluationFigure 81st Quarter 2009 Average Cesium, Cobalt, and Nickel Activity Map APPENDICES Appendix A:LimitationsAppendix B:Transducer Installation LogsAppendix C:Chains of CustodyAppendix D:1st Quarter 2009 Sampling Data SheetsAppendix E:Post-Q1 2009 Mid-Quarter Sampling Data SheetsAppendix F:Dose CalculationsAppendix G:Unit 2 Tritium Plume Trend AnalysesAppendix H:Recent Tracer Testing DataAppendix I:Leak Collection Box DataAppendix J:Lafarge Well LAF-002 RefurbishmentAppendix K:Groundwater Level Transducer Redeployment FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
June 22, 2009 Table of Contents 2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 TABLES Table 1Groundwater Sampling Methods, Equipment, Frequency, and DepthsTable 22009 1st Quarter Low Tide Groundwater ElevationsTable 32009 1st Groundwater Analytical Results and AveragesTable 42009 1st Quarter Groundwater Analytical ResultsTable 5Historic Groundwater Analytical Results FIGURES Figure 1Site Location PlanFigure 2Site PlanFigure 3Lower Hudson Valley Geologic MapFigure 4Current and Potential Future SSC Source LocationsFigure 4AUnit 3 - Cross-Section C-C"Figure 51st Quarter 2009 Shallow and Deep Groundwater ContoursFigure 5A1 st Quarter 2009 Long-Term Transducer Monitoring Evaluation MapFigure 61st Quarter 2009 Average Tritium Activity MapFigure 71st Quarter 2009 Average Strontium-90 Activity MapFigure 7ASr-90 Baseline Analysis - Unit 1 Defueling EvaluationFigure 81st Quarter 2009 Average Cesium, Cobalt, and Nickel Activity Map APPENDICES Appendix A:LimitationsAppendix B:Transducer Installation LogsAppendix C:Chains of CustodyAppendix D:1st Quarter 2009 Sampling Data SheetsAppendix E:Post-Q1 2009 Mid-Quarter Sampling Data SheetsAppendix F:Dose CalculationsAppendix G:Unit 2 Tritium Plume Trend AnalysesAppendix H:Recent Tracer Testing DataAppendix I:Leak Collection Box DataAppendix J:Lafarge Well LAF-002 RefurbishmentAppendix K:Groundwater Level Transducer Redeployment FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
June 22, 2010 Page 1-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 1.0 EXECUTIVE  
June 22, 2010 Page 1-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92                                                    
 
===1.0 EXECUTIVE===


==SUMMARY==
==SUMMARY==
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3 The results of these more quantitative analyses have previously been presented to the NRC during the Deviation Memo Closeout Meeting of August 18 and 19,2009. Additional analyses were then also performed in response to NRC suggestions presented at that meeting. The preparation and finalization of this quarterly report was delayed so as to include these additional analyses. Given the timing of the NRC meeting, some data beyond that associated with Quarter 1 became available  and was therefore used to increase the robustness of the associated analyses and is thus included herein. 4 These retention mechanisms are discussed along with the CSM in the previously cited Hydrogeologic Site Investigation Report. 5 As part of the overall Unit 2 SFP liner integrity evaluation, Entergy undertook testing of a number of welds relative to the potential for ongoing corrosion, such as due to Microbial-Influenced Corrosion (MIC). It was concluded that there was no evidence of ongo ing corrosion.
3 The results of these more quantitative analyses have previously been presented to the NRC during the Deviation Memo Closeout Meeting of August 18 and 19,2009. Additional analyses were then also performed in response to NRC suggestions presented at that meeting. The preparation and finalization of this quarterly report was delayed so as to include these additional analyses. Given the timing of the NRC meeting, some data beyond that associated with Quarter 1 became available  and was therefore used to increase the robustness of the associated analyses and is thus included herein. 4 These retention mechanisms are discussed along with the CSM in the previously cited Hydrogeologic Site Investigation Report. 5 As part of the overall Unit 2 SFP liner integrity evaluation, Entergy undertook testing of a number of welds relative to the potential for ongoing corrosion, such as due to Microbial-Influenced Corrosion (MIC). It was concluded that there was no evidence of ongo ing corrosion.
FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
June 22, 2010 Page 2-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 2.0 SCOPE OF WORK During Q1 2009, GZA performed groundwater monitoring activities at IPEC in Buchanan, New York (Site) as part of IPEC's overall Long Term Groundwater Monitoring Program (LTMP) at the Site 6. The overall foundation for the development and execution of this LTMP is based on the CSM, a description of which is contained within GZA's Hydrogeologic Site Investigation Report
June 22, 2010 Page 2-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92                                                    
 
===2.0 SCOPE===
OF WORK During Q1 2009, GZA performed groundwater monitoring activities at IPEC in Buchanan, New York (Site) as part of IPEC's overall Long Term Groundwater Monitoring Program (LTMP) at the Site 6. The overall foundation for the development and execution of this LTMP is based on the CSM, a description of which is contained within GZA's Hydrogeologic Site Investigation Report
: 7. The scope of work completed for this quarter's monitoring is described in the Sections below.   
: 7. The scope of work completed for this quarter's monitoring is described in the Sections below.   


Refer to Figures 1 and 2 for a Site Location Plan and Site Plan. Figure 3 provides a Lower Hudson Valley Geologic Map and Figure 4 summarizes Current and Potential Future SSC Source Locations.
Refer to Figures 1 and 2 for a Site Location Plan and Site Plan. Figure 3 provides a Lower Hudson Valley Geologic Map and Figure 4 summarizes Current and Potential Future SSC Source Locations.  
2.1 Groundwater Elevation Measurement GZA currently maintains transducers and dataloggers as part of the monitoring instrumentation located across the Site
 
===2.1 Groundwater===
Elevation Measurement GZA currently maintains transducers and dataloggers as part of the monitoring instrumentation located across the Site
: 8. These instruments record groundwater elevation and temperature measurements at regular time intervals
: 8. These instruments record groundwater elevation and temperature measurements at regular time intervals
: 9. Transducer installation logs are presented in Appendix B. Following the quarterly sampling, GZA downloaded groundwater elevation data collected by the pressure transducers over the duration of the quarter. Using these data, GZA developed Site groundwater elevation contours at low river tide conditions for the upper and lower portions of  
: 9. Transducer installation logs are presented in Appendix B. Following the quarterly sampling, GZA downloaded groundwater elevation data collected by the pressure transducers over the duration of the quarter. Using these data, GZA developed Site groundwater elevation contours at low river tide conditions for the upper and lower portions of  


bedrock. These data are presented on Table 2 and Figure 5 for the December 8, 2008 low river tide. The groundwater contour map is used to compute groundwater flow gradients, which are used to provide ongoing calibration of the Precipitation Mass Balance Model (as used in IPEC's radiological dose computations - see Section 3.1). It is anticipated that sufficient seasonal groundwater elevation data will have been collected through the middle of 2009 to verify the suitability of the model for dose computation. As such, it is currently our intent to substantially reduce the scope of groundwater elevation data collection after that time.
bedrock. These data are presented on Table 2 and Figure 5 for the December 8, 2008 low river tide. The groundwater contour map is used to compute groundwater flow gradients, which are used to provide ongoing calibration of the Precipitation Mass Balance Model (as used in IPEC's radiological dose computations - see Section 3.1). It is anticipated that sufficient seasonal groundwater elevation data will have been collected through the middle of 2009 to verify the suitability of the model for dose computation. As such, it is currently our intent to substantially reduce the scope of groundwater elevation data collection after that time.  
2.2 Groundwater Sampling During Q1 2009, GZA collected groundwater samples for radionuclide analysis from scheduled sampling intervals within select monitoring installations ("wells") as shown in Table 3. In addition, GZA split groundwater samples from select locations between Entergy, the Nuclear Regulatory Commission (NRC), and the New York State Department of Environmental Conservation (NYSDEC). Chains of Custody for samples collected by GZA are presented  
 
===2.2 Groundwater===
Sampling During Q1 2009, GZA collected groundwater samples for radionuclide analysis from scheduled sampling intervals within select monitoring installations ("wells") as shown in Table 3. In addition, GZA split groundwater samples from select locations between Entergy, the Nuclear Regulatory Commission (NRC), and the New York State Department of Environmental Conservation (NYSDEC). Chains of Custody for samples collected by GZA are presented  


in Appendix C. 6 Refer to the "Final Quarterly Long-Term Groundwater Monitoring Report Q2-Q4 2007 (Report No. 1)," dated May 2008 for Site background information and a description of the environmental setting. 7 Hydrogeologic Site Investigation Report, January 7, 2008, prepared by GZA GeoEnvironmental, Inc, on behalf of Enercon Services, Inc., for Entergy Nuclear Northeast, Indian Point Energy Center, 450 Broadway, Buchanan, NY 10511. 8 It is anticipated that subsequent to the Q2 2009 quarterly monitoring report, the transducer monitoring program will be reduced to only a select set of locations that will continue to be routinely monitored with groundwater level transducers. 9 Currently, transducers record groundwater elevation and temperature readings on a 20 minute time interval. However it is anticipated that during the later half of 2009, this time interval may be adjusted.
in Appendix C. 6 Refer to the "Final Quarterly Long-Term Groundwater Monitoring Report Q2-Q4 2007 (Report No. 1)," dated May 2008 for Site background information and a description of the environmental setting. 7 Hydrogeologic Site Investigation Report, January 7, 2008, prepared by GZA GeoEnvironmental, Inc, on behalf of Enercon Services, Inc., for Entergy Nuclear Northeast, Indian Point Energy Center, 450 Broadway, Buchanan, NY 10511. 8 It is anticipated that subsequent to the Q2 2009 quarterly monitoring report, the transducer monitoring program will be reduced to only a select set of locations that will continue to be routinely monitored with groundwater level transducers. 9 Currently, transducers record groundwater elevation and temperature readings on a 20 minute time interval. However it is anticipated that during the later half of 2009, this time interval may be adjusted.
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: 10. Table 1 lists the monitoring installations sampled, the sampling depths and elevations within sampling installations, and the sampling method and equipment used. In general, GZA implemented two basic methods of sampling to collect representative groundwater samples: the Low Flow method and a modified well volume purge method. The Low Flow method allows collection of representative groundwater samples from discrete sampling zones within a monitoring installation, while limiting the accumulation of wastewater
: 10. Table 1 lists the monitoring installations sampled, the sampling depths and elevations within sampling installations, and the sampling method and equipment used. In general, GZA implemented two basic methods of sampling to collect representative groundwater samples: the Low Flow method and a modified well volume purge method. The Low Flow method allows collection of representative groundwater samples from discrete sampling zones within a monitoring installation, while limiting the accumulation of wastewater
: 11. As agreed by Entergy Nuclear Northeast, the NRC, NYSDEC, and GZA, the modified traditional purge method 12 allows for the collection of a representative groundwater sample from a monitoring installation after purging 1.5 volumes of water. We implemented this method in wells where low flow sampling was not practical
: 11. As agreed by Entergy Nuclear Northeast, the NRC, NYSDEC, and GZA, the modified traditional purge method 12 allows for the collection of a representative groundwater sample from a monitoring installation after purging 1.5 volumes of water. We implemented this method in wells where low flow sampling was not practical
: 13. Sampling Data Sheets summarizing water quality data and sampling information are presented in Appendix D. With all of the above sampling methods, GZA used dedicated sampling equipment, including polyethylene and/or nylon tubing and submersible electric pumps to the extent practical. The use of dedicated sampling equipment limits the possibility of cross-contamination between monitoring installations and/or individual multi-level samples within a single installation. Refer to Table 1 for a summary of the sampling methods, equipment, frequency, and depths employed during this quarter's groundwater monitoring round.
: 13. Sampling Data Sheets summarizing water quality data and sampling information are presented in Appendix D. With all of the above sampling methods, GZA used dedicated sampling equipment, including polyethylene and/or nylon tubing and submersible electric pumps to the extent practical. The use of dedicated sampling equipment limits the possibility of cross-contamination between monitoring installations and/or individual multi-level samples within a single installation. Refer to Table 1 for a summary of the sampling methods, equipment, frequency, and depths employed during this quarter's groundwater monitoring round.  
2.3 Vapor Containment Building Foundation Drain Sampling GZA attempted to collect water samples from three manholes (B-1, B-6, and MH-5) on-Site to characterize discharge from foundation drains around and below the Unit 2 and 3 Vapor Containment Structures (the drains include both the foundation drains around the building periphery ("curtain drains") as well as those around the sumps near the middle of the structures). These drains are being used as an integral part of the early leak detection monitoring network. However, due to plant security precautions, GZA was unable to access these sampling points. The manholes at these catch basins are currently welded shut, as they were during the previous quarter (Q4 08). Entergy recently modified the covers of these three manholes to allow access to these sampling locations without compromising plant security and samples were collected from these locations during the Q2-2009 sampling round. Prior to Q3 08, GZA was able to sample the east drain line in manhole MH-5 to capture drainage from the Unit 2 Vapor Containment Foundation Drains. GZA also previously sampled the east drain line in manhole B-1 to capture drainage from the Unit 3 Vapor Containment South Curtain Drain. In addition, GZA sampled the manhole B-6 during earlier sampling quarters to capture drainage from the Unit 3 Vapor Containment North Curtain Drain and Reactor Sump  
 
===2.3 Vapor===
Containment Building Foundation Drain Sampling GZA attempted to collect water samples from three manholes (B-1, B-6, and MH-5) on-Site to characterize discharge from foundation drains around and below the Unit 2 and 3 Vapor Containment Structures (the drains include both the foundation drains around the building periphery ("curtain drains") as well as those around the sumps near the middle of the structures). These drains are being used as an integral part of the early leak detection monitoring network. However, due to plant security precautions, GZA was unable to access these sampling points. The manholes at these catch basins are currently welded shut, as they were during the previous quarter (Q4 08). Entergy recently modified the covers of these three manholes to allow access to these sampling locations without compromising plant security and samples were collected from these locations during the Q2-2009 sampling round. Prior to Q3 08, GZA was able to sample the east drain line in manhole MH-5 to capture drainage from the Unit 2 Vapor Containment Foundation Drains. GZA also previously sampled the east drain line in manhole B-1 to capture drainage from the Unit 3 Vapor Containment South Curtain Drain. In addition, GZA sampled the manhole B-6 during earlier sampling quarters to capture drainage from the Unit 3 Vapor Containment North Curtain Drain and Reactor Sump  


Foundation Drain
Foundation Drain
: 14.
: 14.
10 Refer to Section 4.3 of the Final 2007 Quarterly Long-Term Groundwater Monitoring Report No. 1, dated May 2008, for sampling method and equipment selection rationale. 11 As described in: Low-Flow Sample Collection, GZA, 7/18/2007 12 As described in: Modified Traditional Groundwater Sample Collection, GZA, 7/18/2007 13 When external factors (such as well-surface-flooding from stormwater runoff or overland flow of plant component leaks) might have infiltrated the top of the well and impacted ambient groundwater conditions at a specific sampling location, GZA typically purged three to five volumes of water (using the modified traditional purge method) prior to collection of a sample to attempt to obtain a representative groundwater sample. 14 During early attempts to collect a discrete sample specifically representative of the east drain line in B-6, this catch basin was used as a clean water discharge point for some unidentified plant work. As a result, the height of the water within the manhole was Section 2.0 Scope of Work June 22, 2010 Page 2-3 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 2.4 Preventative Maintenance GZA performed general wellhead maintenance tasks, such as housekeeping of well vaults and roadboxes, and replacement of dedicated sampling equipment, tubing and transducers. In addition, LaFarge well LAF-002 (also initially referred to as MW-2), located at the LaFarge Gypsum Property to the south of Indian IPEC, was refurbished between November 24 th and 25 th, 2008. This well has been incorporated as a boundary well within the Long Term Monitoring Program at the request of the NRC. A description of the refurbishment activities is  
10 Refer to Section 4.3 of the Final 2007 Quarterly Long-Term Groundwater Monitoring Report No. 1, dated May 2008, for sampling method and equipment selection rationale. 11 As described in: Low-Flow Sample Collection, GZA, 7/18/2007 12 As described in: Modified Traditional Groundwater Sample Collection, GZA, 7/18/2007 13 When external factors (such as well-surface-flooding from stormwater runoff or overland flow of plant component leaks) might have infiltrated the top of the well and impacted ambient groundwater conditions at a specific sampling location, GZA typically purged three to five volumes of water (using the modified traditional purge method) prior to collection of a sample to attempt to obtain a representative groundwater sample. 14 During early attempts to collect a discrete sample specifically representative of the east drain line in B-6, this catch basin was used as a clean water discharge point for some unidentified plant work. As a result, the height of the water within the manhole was Section 2.0 Scope of Work June 22, 2010 Page 2-3 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92                                                                                                                                                                          
 
===2.4 Preventative===
Maintenance GZA performed general wellhead maintenance tasks, such as housekeeping of well vaults and roadboxes, and replacement of dedicated sampling equipment, tubing and transducers. In addition, LaFarge well LAF-002 (also initially referred to as MW-2), located at the LaFarge Gypsum Property to the south of Indian IPEC, was refurbished between November 24 th and 25 th, 2008. This well has been incorporated as a boundary well within the Long Term Monitoring Program at the request of the NRC. A description of the refurbishment activities is  


provided in Appendix I Mid-Quarter Sample Collection During the spring of 2008, Indian Point Energy Center began moving spent fuel in Unit 1. Therefore, samples in addition to those collected for the routine quarterly sampling round were obtained from selected wells associated with Unit 1 to increase the monitoring frequency proximate to these events. Following the Q1 09 sampling event, additional groundwater samples were collected from MW-42-49, MW-50-66, MW-53-120, and IP1-CSS during the approximate halfway point between sampling quarters. The results of the mid-quarter samples collected after Q1 2009 are presented in Section 3.4 along with the quarterly data. Sampling Data Sheets summarizing water quality data and sampling information are presented in  
provided in Appendix I Mid-Quarter Sample Collection During the spring of 2008, Indian Point Energy Center began moving spent fuel in Unit 1. Therefore, samples in addition to those collected for the routine quarterly sampling round were obtained from selected wells associated with Unit 1 to increase the monitoring frequency proximate to these events. Following the Q1 09 sampling event, additional groundwater samples were collected from MW-42-49, MW-50-66, MW-53-120, and IP1-CSS during the approximate halfway point between sampling quarters. The results of the mid-quarter samples collected after Q1 2009 are presented in Section 3.4 along with the quarterly data. Sampling Data Sheets summarizing water quality data and sampling information are presented in  
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. above the drain lines, which only permitted collection of a composite sample. By mid-year 2008, these discharge operations had ceased, and during the Q2 2008 attempt to collect a sample from th is location, GZA observed no flow of water through this drain. It is possible that flow within this drain is being restricted by sediment further upgradient in the drain.
. above the drain lines, which only permitted collection of a composite sample. By mid-year 2008, these discharge operations had ceased, and during the Q2 2008 attempt to collect a sample from th is location, GZA observed no flow of water through this drain. It is possible that flow within this drain is being restricted by sediment further upgradient in the drain.
FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT      Q1 2009      (REPORT NO. 5)
June 22, 2010 Page 3-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 3.0 DATA EVALUATION The Long Term Monitoring Program was designed to provide data to address four main objectives:  Monitor groundwater flow rate and radionuclide concentrations to both detect and characterize current and potential future off-Site groundwater contaminant migration to the Hudson River, both via direct groundwater discharge to the river and through infiltration into the Discharge Canal, from abnormal radionuclide releases of liquid effluents, so as to allow computation of potential radiation dose to the public from these releases;  Mo nitor groundwater proximate to Systems, Structures and Components (SSCs) which exhibit a credible probability of resulting in a visually undetected release of radionuclides to the subsurface carrying an activity level of significance;  Monitor groundwater along the property boundary to confirm that contaminated groundwater is not migrating off of the property to locations other than the river; and  Monitor the groundwater plumes identified on-Site to demonstrate overall reductions in total activity over time as is consistent with the requirements of Monitored Natural Attenuation (MNA) 15, the selected remediation for the IPEC Site. These objectives are consistent with and fully encompass the guidance provided in the NEI Groundwater Protection Initiative (GPI). The following sections provide data analyses to address these four objectives.
June 22, 2010 Page 3-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 3.0 DATA EVALUATION The Long Term Monitoring Program was designed to provide data to address four main objectives:  Monitor groundwater flow rate and radionuclide concentrations to both detect and characterize current and potential future off-Site groundwater contaminant migration to the Hudson River, both via direct groundwater discharge to the river and through infiltration into the Discharge Canal, from abnormal radionuclide releases of liquid effluents, so as to allow computation of potential radiation dose to the public from these releases;  Mo nitor groundwater proximate to Systems, Structures and Components (SSCs) which exhibit a credible probability of resulting in a visually undetected release of radionuclides to the subsurface carrying an activity level of significance;  Monitor groundwater along the property boundary to confirm that contaminated groundwater is not migrating off of the property to locations other than the river; and  Monitor the groundwater plumes identified on-Site to demonstrate overall reductions in total activity over time as is consistent with the requirements of Monitored Natural Attenuation (MNA) 15, the selected remediation for the IPEC Site. These objectives are consistent with and fully encompass the guidance provided in the NEI Groundwater Protection Initiative (GPI). The following sections provide data analyses to address these four objectives.  
3.1 Groundwater Mass Flux The following sections describe the computation of groundwater flow (mass flux) through the Site using the Precipitation Mass Balance Model and the continuing verification of the calibration of this model based on the most current quarterly groundwater elevation monitoring data.
 
3.1.1 Groundwater Mass Flux Computation As presented in the Hydrogeologic Site Investigation Report, the groundwater flow in both the upper and lower flow zones is toward the power block area from the North, East and South, with subsequent discharge to the Hudson River to the West. A corollary to this conclusion is that there is no groundwater flow, and thus no off-Site radionuclide migration from the power block area to the North, East or South. Groundwater flow associated with infiltration from the watershed may be as deep as 350 feet, but still ultimately discharges to the river. To estimate groundwater flow (i.e., groundwater mass flux) beneath the Site, an analytical groundwater flow model was constructed based on a Precipitation Mass Balance Model using the Q2 2007 (reference) data set. This model is based on the precept that, on a long term average, the groundwater flowing through and discharging from the aquifer is equal to the watershed infiltration recharge. The Precipitation Mass Balance Model was also calibrated to groundwater fluxes based on a Darcy's Law Model with gradients also derived from Q2 2007 15 The selection of MNA as the remedial strategy for the Site is discussed further in the Hydrogeologic Site Investigation Report.
===3.1 Groundwater===
Mass Flux The following sections describe the computation of groundwater flow (mass flux) through the Site using the Precipitation Mass Balance Model and the continuing verification of the calibration of this model based on the most current quarterly groundwater elevation monitoring data.  
 
====3.1.1 Groundwater====
Mass Flux Computation As presented in the Hydrogeologic Site Investigation Report, the groundwater flow in both the upper and lower flow zones is toward the power block area from the North, East and South, with subsequent discharge to the Hudson River to the West. A corollary to this conclusion is that there is no groundwater flow, and thus no off-Site radionuclide migration from the power block area to the North, East or South. Groundwater flow associated with infiltration from the watershed may be as deep as 350 feet, but still ultimately discharges to the river. To estimate groundwater flow (i.e., groundwater mass flux) beneath the Site, an analytical groundwater flow model was constructed based on a Precipitation Mass Balance Model using the Q2 2007 (reference) data set. This model is based on the precept that, on a long term average, the groundwater flowing through and discharging from the aquifer is equal to the watershed infiltration recharge. The Precipitation Mass Balance Model was also calibrated to groundwater fluxes based on a Darcy's Law Model with gradients also derived from Q2 2007 15 The selection of MNA as the remedial strategy for the Site is discussed further in the Hydrogeologic Site Investigation Report.
Section 3.0 Data Evaluation June 22, 2010 Page 3-2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 (June 1, 2007) groundwater elevation contours
Section 3.0 Data Evaluation June 22, 2010 Page 3-2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 (June 1, 2007) groundwater elevation contours
: 16. This calibration not only verified the reasonableness of the overall groundwater flow rates predicted by the Precipitation Mass Balance Model, but also allowed further discretization of the groundwater flow into upper and lower flow zones as well as flow volumes upgradient and downgradient of the Discharge Canal. The mass balance approach recognizes that the only substantial source of recharge to the aquifer is areal recharge derived from precipitation. The previous ten year average for precipitation measured at the Site is 36 inches per year. Based on a USGS infiltration study 17 as well as the model calibration cited above, approximately 29 percent of the precipitation falling on pervious surfaces over the Site watershed area results in infiltration recharge to the groundwater. This computation indicates that the groundwater recharge rate is approximately 10.5 inches per year for the 2008/2009 monitoring period. Applying this information to the pervious surfaces within the six individual groundwater flow zones shown on Figure 4, it is estimated that approximately 5.2 gpm of groundwater flows into the Discharge Canal from the upper and lower zones. In addition, approximately 5.8 and 7.7 gpm of groundwater flows into the Hudson River from the upper and lower zones, respectively. Furthermore, the mass balance model accounts for storm water discharge 18 to both the Discharge Canal and directly to the Hudson River which are estimated to be 44 and 4 gpm, respectively. These flows can be further subdivided into flow zones as shown in the table  
: 16. This calibration not only verified the reasonableness of the overall groundwater flow rates predicted by the Precipitation Mass Balance Model, but also allowed further discretization of the groundwater flow into upper and lower flow zones as well as flow volumes upgradient and downgradient of the Discharge Canal. The mass balance approach recognizes that the only substantial source of recharge to the aquifer is areal recharge derived from precipitation. The previous ten year average for precipitation measured at the Site is 36 inches per year. Based on a USGS infiltration study 17 as well as the model calibration cited above, approximately 29 percent of the precipitation falling on pervious surfaces over the Site watershed area results in infiltration recharge to the groundwater. This computation indicates that the groundwater recharge rate is approximately 10.5 inches per year for the 2008/2009 monitoring period. Applying this information to the pervious surfaces within the six individual groundwater flow zones shown on Figure 4, it is estimated that approximately 5.2 gpm of groundwater flows into the Discharge Canal from the upper and lower zones. In addition, approximately 5.8 and 7.7 gpm of groundwater flows into the Hudson River from the upper and lower zones, respectively. Furthermore, the mass balance model accounts for storm water discharge 18 to both the Discharge Canal and directly to the Hudson River which are estimated to be 44 and 4 gpm, respectively. These flows can be further subdivided into flow zones as shown in the table  


in Appendix F.
in Appendix F.  
3.1.2 Quarterly Groundwater Mass Flux Calibration As indicated above, the Precipitation Mass Balance Model was calibrated to groundwater fluxes computed based on a Darcy's Law Model. The calibration compared the total groundwater flow  
 
====3.1.2 Quarterly====
Groundwater Mass Flux Calibration As indicated above, the Precipitation Mass Balance Model was calibrated to groundwater fluxes computed based on a Darcy's Law Model. The calibration compared the total groundwater flow  


values for each of the six flow zones computed independently 19 using the Precipitation Mass Balance Model and the Darcy's Law Model. The initial calibration was performed using gradients derived from contours of groundwater elevation measured on June, 1 2007, as described in the Hydrogeologic Site Investigation Report. As part of the initial portions of the Long Term Monitoring Program 20, this calibration is being evaluated quarterly to verify that seasonal changes in groundwater elevations do not materially impact the calibration. Therefore, quarterly groundwater elevations measured with pressure transducers at representative low river tides 21 have been used to construct groundwater elevation contours for the upper groundwater flow zone (water table contours) and the lower 16 Refer to the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008. 17 USGS. Water Use, Ground-Water Recharge and Availability, and Quality of Water in the Greenwich Area, Fairfield County, Connecticut and Westchester County, New York, 2000-2002.
values for each of the six flow zones computed independently 19 using the Precipitation Mass Balance Model and the Darcy's Law Model. The initial calibration was performed using gradients derived from contours of groundwater elevation measured on June, 1 2007, as described in the Hydrogeologic Site Investigation Report. As part of the initial portions of the Long Term Monitoring Program 20, this calibration is being evaluated quarterly to verify that seasonal changes in groundwater elevations do not materially impact the calibration. Therefore, quarterly groundwater elevations measured with pressure transducers at representative low river tides 21 have been used to construct groundwater elevation contours for the upper groundwater flow zone (water table contours) and the lower 16 Refer to the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008. 17 USGS. Water Use, Ground-Water Recharge and Availability, and Quality of Water in the Greenwich Area, Fairfield County, Connecticut and Westchester County, New York, 2000-2002.
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Figure 5A of this quarterly report, and the rational for the selection of these specific individual transducer locations is provided in Appendix J. 3.2 Groundwater Sampling  The following sections describe the groundwater sampling results and associated QA/QC protocols.
Figure 5A of this quarterly report, and the rational for the selection of these specific individual transducer locations is provided in Appendix J. 3.2 Groundwater Sampling  The following sections describe the groundwater sampling results and associated QA/QC protocols.
25 The dose computations are currently all performed with the flows computed for the Q2 2007 data set. It is noted that the increase in the Q1 2009 groundwater flow in the Unit 1/2 zone, which encompasses the majority of the radionuclide migration to th e river, is only 5% higher than the reference flow. Therefore the total dose computed with this slightly higher groundwater flow would still only be a small fraction of the permitted value. Therefore, the current dose computations have again been based on the Q 2 07 data.
25 The dose computations are currently all performed with the flows computed for the Q2 2007 data set. It is noted that the increase in the Q1 2009 groundwater flow in the Unit 1/2 zone, which encompasses the majority of the radionuclide migration to th e river, is only 5% higher than the reference flow. Therefore the total dose computed with this slightly higher groundwater flow would still only be a small fraction of the permitted value. Therefore, the current dose computations have again been based on the Q 2 07 data.
Section 3.0 Data Evaluation June 22, 2010 Page 3-5 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 3.2.1 Groundwater Sampling Results Groundwater samples collected on behalf of Entergy during Q1 2009 were analyzed for radionuclides including Tritium, Sr-90, Cs-137, Co-60, and Ni-63 at GEL Laboratories
Section 3.0 Data Evaluation June 22, 2010 Page 3-5 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92  
 
====3.2.1 Groundwater====
Sampling Results Groundwater samples collected on behalf of Entergy during Q1 2009 were analyzed for radionuclides including Tritium, Sr-90, Cs-137, Co-60, and Ni-63 at GEL Laboratories
: 26. Table 3 presents the Q1 2009 analytical results specific to Tritium, Sr-90, Cs-137, Co-60, and Ni-63. The rolling yearly averages, which are calculated using all the valid data from the previous year [Q2 08 through Q1-09] including mid-quarter and confirmatory samples, are also  
: 26. Table 3 presents the Q1 2009 analytical results specific to Tritium, Sr-90, Cs-137, Co-60, and Ni-63. The rolling yearly averages, which are calculated using all the valid data from the previous year [Q2 08 through Q1-09] including mid-quarter and confirmatory samples, are also  


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* A radionuclide is positively detected when the result is greater than or equal to the MDC and 3 times the 1 sigma uncertainty. ** The values of 1000 and 2000 pCi/L for H-3 and 2 pCi/L for Sr-90 have been chosen to be low enough to result in timely detection of a new release or change to an existing release and still be outside the normal expected range of sample results at these locations, to the extent possible with the currently available data over time. *** Any positively detected radionuclide that has a result greater than 2 times the average from the previous year. The IL is not reached until an H-3 result is greater than 1000 pCi/L or a Sr-90 result is greater than 2 pCi/L. In the event that the analytical results of a groundwater sample exceed the designated I.L., the following series of actions will be considered:
* A radionuclide is positively detected when the result is greater than or equal to the MDC and 3 times the 1 sigma uncertainty. ** The values of 1000 and 2000 pCi/L for H-3 and 2 pCi/L for Sr-90 have been chosen to be low enough to result in timely detection of a new release or change to an existing release and still be outside the normal expected range of sample results at these locations, to the extent possible with the currently available data over time. *** Any positively detected radionuclide that has a result greater than 2 times the average from the previous year. The IL is not reached until an H-3 result is greater than 1000 pCi/L or a Sr-90 result is greater than 2 pCi/L. In the event that the analytical results of a groundwater sample exceed the designated I.L., the following series of actions will be considered:
Systems Bldg 33' area given increased Sphere Valve Gallery sump pump activation on the 14' level. During fuel removal, IPEC continued to add water to maintain the pool level at 55' until October when all the fuel was removed and the pools were drained. Given the anticipated increased leakage, GZA collected Unit 1 "Mid-Quarter" groundwater samples from monitoring wells U1-CSS, MW-42-49, MW-50-66, and MW-53-120 on May 12 & 13, 2008, September 5 & 8, 2008, and November 17 & 19 2008 to evaluate the associated subsurface impact of fuel removal activities. These wells were again sampled as part of the Q1-2009 sampling round, with additional Mid-Quarter samples subsequently taken between March 16 and March 18, 2009. 31 Previously ILs were calculated based on the analytical results from the quarterly sampling rounds and excluded mid-quarter a nd confirmatory sample analytical results in the calculation. 32 If a confirmatory analytical result confirms the original analytical result is false, then only the confirmatory result is utilized in the yearly IL calculation. If a confirmatory analytical result confirms the original result is valid, then both the original and t he confirmatory result are utilized in the yearly IL calculation. 33 If an aliquot analytical result confirms the original analytical result is false, then only the aliquot result is utilized in the yearly IL calculation. If an aliquot analytical result confirms the original result is valid, then the average of the original and the aliquot result are utilized in the yearly IL calculation.
Systems Bldg 33' area given increased Sphere Valve Gallery sump pump activation on the 14' level. During fuel removal, IPEC continued to add water to maintain the pool level at 55' until October when all the fuel was removed and the pools were drained. Given the anticipated increased leakage, GZA collected Unit 1 "Mid-Quarter" groundwater samples from monitoring wells U1-CSS, MW-42-49, MW-50-66, and MW-53-120 on May 12 & 13, 2008, September 5 & 8, 2008, and November 17 & 19 2008 to evaluate the associated subsurface impact of fuel removal activities. These wells were again sampled as part of the Q1-2009 sampling round, with additional Mid-Quarter samples subsequently taken between March 16 and March 18, 2009. 31 Previously ILs were calculated based on the analytical results from the quarterly sampling rounds and excluded mid-quarter a nd confirmatory sample analytical results in the calculation. 32 If a confirmatory analytical result confirms the original analytical result is false, then only the confirmatory result is utilized in the yearly IL calculation. If a confirmatory analytical result confirms the original result is valid, then both the original and t he confirmatory result are utilized in the yearly IL calculation. 33 If an aliquot analytical result confirms the original analytical result is false, then only the aliquot result is utilized in the yearly IL calculation. If an aliquot analytical result confirms the original result is valid, then the average of the original and the aliquot result are utilized in the yearly IL calculation.
Section 3.0 Data Evaluation June 22, 2010 Page 3-8 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92  Contact the laboratory to verify that all quality control checks were satisfactory, sufficient sample volume was used; required MDC's were met, etc.;  Re-analyze aliquots of the original sample;  Re-sample the location to verify the result;  Increase the frequency of sampling for this location;  Initiate an investigation utilizing Entergy's corrective action program and related resources as appropriate (e.g. site engineering / radiation protection); and  Initiation of source/ground water remediation techniques commensurate with the potential dose impact analyses and good environmental stewardship.
Section 3.0 Data Evaluation June 22, 2010 Page 3-8 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92  Contact the laboratory to verify that all quality control checks were satisfactory, sufficient sample volume was used; required MDC's were met, etc.;  Re-analyze aliquots of the original sample;  Re-sample the location to verify the result;  Increase the frequency of sampling for this location;  Initiate an investigation utilizing Entergy's corrective action program and related resources as appropriate (e.g. site engineering / radiation protection); and  Initiation of source/ground water remediation techniques commensurate with the potential dose impact analyses and good environmental stewardship.  
3.4.1 Previous Q4-2008 Investigation Level Exceedances As indicated in the Q4 2008 Quarterly Monitoring Report, a comparison of the Q4 2008 and Post Q4 08 Mid-Quarter analytical results to their respective I.L.
 
====3.4.1 Previous====
Q4-2008 Investigation Level Exceedances As indicated in the Q4 2008 Quarterly Monitoring Report, a comparison of the Q4 2008 and Post Q4 08 Mid-Quarter analytical results to their respective I.L.
34 values shows that the I.L.s were initially met in four samples. One of these samples (MW-67-39) was reanalyzed, and the results were found to no longer exceed the I.L.s
34 values shows that the I.L.s were initially met in four samples. One of these samples (MW-67-39) was reanalyzed, and the results were found to no longer exceed the I.L.s
: 35. The remaining three samples (MW-36-52, MW-42-49, and MW-54-58) are discussed individually in the sections below.
: 35. The remaining three samples (MW-36-52, MW-42-49, and MW-54-58) are discussed individually in the sections below.
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Section 3.0 Data Evaluation June 22, 2010 Page 3-13 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 from the upcoming quarterly monitoring round will be utilized to assess an upward trend of Strontium levels at this location. To this end, and as discussed in Section 3.5 - Plume Monitored Natural Attenuation, the behavior of the Strontium increases due to defueling of Unit 1 are being specifically monitored, as summarized on a new figure developed for this, the Q1 2009 quarterly monitoring report (Figure 7A). U1-NCD AND U1-SFDS. As agreed with the NRC during the Deviation Memo Closeout Meeting of August 18 and 19, 2009, sampling of the Unit 1 North Curtain Drain (U1-NCD) and the Unit 1 Sphere Foundation Drain Sump (U1-SFDS) will be formally included as part of the Long Term Monitoring Program. These drains have historically been assumed to collect some groundwater contaminated with Tritium from the Unit 2 SFP. This conclusion was validated by the tracer test conducted as part of the hydrogeologic site investigation (see the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008). The amount of quarterly sampling data is currently insufficient to set Tritium I.L.s for these drains. However, visual inspection of the existing data was performed and no noteworthy increases in Tritium levels were observed. In addition, given the location of these Unit 1 drains, they should also prove useful for monitoring Strontium levels associated with the Unit 1 defueling. As such, the data from these drains has also been included on Figure 7A. Three critical conclusions can be drawn from the above summarized data and analyses: 1) the current CSM for the IPEC site provides a good basis for the design of the Long Term Monitoring Program; 2) the procedures and rational used for selecting monitoring locations for leak detection have been further validated given the clear detection of the confirmed Unit 1 SFPs increased leakage during fuel removal and the detection of Tritium leakage from the waste distillation tank valves within the Unit 1 FSB; and 3) increases in radionuclide levels following a documented leak take longer to materialize in the groundwater than might otherwise be  
Section 3.0 Data Evaluation June 22, 2010 Page 3-13 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 from the upcoming quarterly monitoring round will be utilized to assess an upward trend of Strontium levels at this location. To this end, and as discussed in Section 3.5 - Plume Monitored Natural Attenuation, the behavior of the Strontium increases due to defueling of Unit 1 are being specifically monitored, as summarized on a new figure developed for this, the Q1 2009 quarterly monitoring report (Figure 7A). U1-NCD AND U1-SFDS. As agreed with the NRC during the Deviation Memo Closeout Meeting of August 18 and 19, 2009, sampling of the Unit 1 North Curtain Drain (U1-NCD) and the Unit 1 Sphere Foundation Drain Sump (U1-SFDS) will be formally included as part of the Long Term Monitoring Program. These drains have historically been assumed to collect some groundwater contaminated with Tritium from the Unit 2 SFP. This conclusion was validated by the tracer test conducted as part of the hydrogeologic site investigation (see the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008). The amount of quarterly sampling data is currently insufficient to set Tritium I.L.s for these drains. However, visual inspection of the existing data was performed and no noteworthy increases in Tritium levels were observed. In addition, given the location of these Unit 1 drains, they should also prove useful for monitoring Strontium levels associated with the Unit 1 defueling. As such, the data from these drains has also been included on Figure 7A. Three critical conclusions can be drawn from the above summarized data and analyses: 1) the current CSM for the IPEC site provides a good basis for the design of the Long Term Monitoring Program; 2) the procedures and rational used for selecting monitoring locations for leak detection have been further validated given the clear detection of the confirmed Unit 1 SFPs increased leakage during fuel removal and the detection of Tritium leakage from the waste distillation tank valves within the Unit 1 FSB; and 3) increases in radionuclide levels following a documented leak take longer to materialize in the groundwater than might otherwise be  


expected.
expected.  
3.4.4 Conclusions - Boundary and SSC Leak Detection Monitoring Recognizing that measured activities in the Off-Site and On-Site Boundary Wells were below I.L. levels, this overall data set continues to demonstrate that radionuclides are migrating toward the Hudson River to the West, and are not migrating off of the property to the North, East or  
 
====3.4.4 Conclusions====
- Boundary and SSC Leak Detection Monitoring Recognizing that measured activities in the Off-Site and On-Site Boundary Wells were below I.L. levels, this overall data set continues to demonstrate that radionuclides are migrating toward the Hudson River to the West, and are not migrating off of the property to the North, East or  


South, as expected given groundwater flow directions from the property periphery toward the power block area. Given the analyses discussed above, there is also no compelling reason to believe that any new undetected leaks have developed in the SSCs monitored relative to Unit 2 or 3. With the exception of locations MW-32-59, MW-42-49, and MW-53-82, no Tritium levels met their I.L.s and the overall, continued reduction in Tritium levels in the Unit 2 plume 40 is consistent with a conclusion that the Unit 2 SFP had ceased leaking after the transfer canal "pin hole leak" was repaired in late 2007. The recent increase in Tritium levels at locations MW-42-49 and MW-53-82 are likely attributed to an observed leak in the waste distillation tank valving within the Unit 1 FSB rather than increased leakage from the SSCs associated with Unit 2 and 3. The increase of Tritium levels at location MW-32-59 is inferred, in part based on the recent tracer data, to be associated with Tritium stored in the subsurface via natural and anthropogenic retention mechanisms
South, as expected given groundwater flow directions from the property periphery toward the power block area. Given the analyses discussed above, there is also no compelling reason to believe that any new undetected leaks have developed in the SSCs monitored relative to Unit 2 or 3. With the exception of locations MW-32-59, MW-42-49, and MW-53-82, no Tritium levels met their I.L.s and the overall, continued reduction in Tritium levels in the Unit 2 plume 40 is consistent with a conclusion that the Unit 2 SFP had ceased leaking after the transfer canal "pin hole leak" was repaired in late 2007. The recent increase in Tritium levels at locations MW-42-49 and MW-53-82 are likely attributed to an observed leak in the waste distillation tank valving within the Unit 1 FSB rather than increased leakage from the SSCs associated with Unit 2 and 3. The increase of Tritium levels at location MW-32-59 is inferred, in part based on the recent tracer data, to be associated with Tritium stored in the subsurface via natural and anthropogenic retention mechanisms
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While it is visually clear that this well has shown a major decrease in Tritium levels since containment of the 2005 shrinkage crack leak, the Mann-Kendall analysis only evaluates number of increases relative to decreases and does not weight the analysis relative to the magnitude of the change. As such, visual inspection demonstrates that this location actually exhibits an overall decreasing trend.      Inspection of the graph for MW-34 (Figure G-5) shows a distinctly increasing trend at early times, followed by a distinctly decreasing trend thereafter. Given the time frames and the downgradient location of this bedrock well, it is likely that the increasing trend delineates arrival of the leading edge of the plume generated by the 2005 shrinkage crack leak. The decreasing trend would then reflect dissipation of this plume after containment of this leak (this hypothesis is supported by similar trends in MW-33 and MW-35. As such, the MW-34 location actually exhibits a decreasing trend relative to plume behavior after containment of the 2005 shrinkage crack leak.
While it is visually clear that this well has shown a major decrease in Tritium levels since containment of the 2005 shrinkage crack leak, the Mann-Kendall analysis only evaluates number of increases relative to decreases and does not weight the analysis relative to the magnitude of the change. As such, visual inspection demonstrates that this location actually exhibits an overall decreasing trend.      Inspection of the graph for MW-34 (Figure G-5) shows a distinctly increasing trend at early times, followed by a distinctly decreasing trend thereafter. Given the time frames and the downgradient location of this bedrock well, it is likely that the increasing trend delineates arrival of the leading edge of the plume generated by the 2005 shrinkage crack leak. The decreasing trend would then reflect dissipation of this plume after containment of this leak (this hypothesis is supported by similar trends in MW-33 and MW-35. As such, the MW-34 location actually exhibits a decreasing trend relative to plume behavior after containment of the 2005 shrinkage crack leak.
55 MW-42 and MW-53 are located downgradient of the Unit 1 SFPs, rather than the Unit 2 SFP. However, these two wells were included in the analyses, as requested by NRC, due to the apparent contribution of Unit 2 SFP Tritium to the Unit 1 groundwater flow regime via vadose zone transport (see Figure 6). It is noted that any decreasing Tritium trend in this area due to the termination of leaks from the Unit 2 SFP could be masked by increased leakage of Tritiated water from the Unit 1 SFPs up throug h the completion of defueling in November 2008. 56 Monitoring locations MW-66 and MW-67, also located downgradient of the Unit 2 SFP, could not be included in the analyses because the data sets for these two wells do not yet include the required minimum number of data points (ten) for the Mann-Kendall analysis method.
55 MW-42 and MW-53 are located downgradient of the Unit 1 SFPs, rather than the Unit 2 SFP. However, these two wells were included in the analyses, as requested by NRC, due to the apparent contribution of Unit 2 SFP Tritium to the Unit 1 groundwater flow regime via vadose zone transport (see Figure 6). It is noted that any decreasing Tritium trend in this area due to the termination of leaks from the Unit 2 SFP could be masked by increased leakage of Tritiated water from the Unit 1 SFPs up throug h the completion of defueling in November 2008. 56 Monitoring locations MW-66 and MW-67, also located downgradient of the Unit 2 SFP, could not be included in the analyses because the data sets for these two wells do not yet include the required minimum number of data points (ten) for the Mann-Kendall analysis method.
Section 3.0 Data Evaluation June 22, 2010 Page 3-19 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 It is noted that the five remaining "no trend" wells are all associated with the two monitoring locations MW-31 and MW-32. These two locations are actually not located downgradient of the Unit 2 SFP from a saturated groundwater flow standpoint. Rather, they are generally located up- and cross-gradient. The final well, MW-31-85, is also part of this group. This is the only well for which the Mann-Kendall analysis indicates an increasing trend. The increasing trend in this well, as well as the behavior of the other wells in MW-31 and MW-32 are discussed in the following section. Based on the evaluation summarized above, the Mann-Kendall analyses of the individual depth intervals within the groundwater monitoring installations located downgradient of the Unit 2 SFP overwhelmingly support a conclusion that the Tritium plume has exhibited an overall decreasing trend with time since monitoring began.
Section 3.0 Data Evaluation June 22, 2010 Page 3-19 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 It is noted that the five remaining "no trend" wells are all associated with the two monitoring locations MW-31 and MW-32. These two locations are actually not located downgradient of the Unit 2 SFP from a saturated groundwater flow standpoint. Rather, they are generally located up- and cross-gradient. The final well, MW-31-85, is also part of this group. This is the only well for which the Mann-Kendall analysis indicates an increasing trend. The increasing trend in this well, as well as the behavior of the other wells in MW-31 and MW-32 are discussed in the following section. Based on the evaluation summarized above, the Mann-Kendall analyses of the individual depth intervals within the groundwater monitoring installations located downgradient of the Unit 2 SFP overwhelmingly support a conclusion that the Tritium plume has exhibited an overall decreasing trend with time since monitoring began.  
3.6.2 Individual Upgradient Monitoring Well Tritium and Tracer Analyses (MW-31 and MW-32)  As discussed in the preceding section, individual wells clearly exhibiting no trend or an increasing trend are confined to monitoring locations MW-31 and MW-32. These two monitoring installations are located up- and cross-gradient from the Unit 2 SFP. While not downgradient of the SFP from a groundwater flow perspective, Tritium leakage from the SFP can still migrate to these locations via vadose zone transport above the water table along dipping bedrock fractures. During the site investigation work, a tracer test was performed which clearly demonstrated that water released proximate to the SFP foundations (adjacent to MW-30) does migrate to the east and south past MW-31 and MW-32 prior to entering the water table, and then flows with the groundwater through these wells and then to the river to the west. This vadose zone migration mechanism is discussed more fully in the Hydrogeologic Site Investigation Report. In addition to the general persistence of Tritium throughout the Unit 2 plume 57 and the absents of a clear downward trend in Tritium concentrations with time at these two specific monitoring installations, the upper-most interval in both MW-31 and MW-32 have shown an abrupt increase in Tritium over the last two quarters (Q1 and Q2 58 09). These data can be explained by either: 1) an ongoing small episodic (< 5L/day) leak in the IP2- SFP; 2) a "retention mechanism" in the saturated and unsaturated zones under the IP2-SFP that can retain substantial volumes of highly Tritiated water (e.g., historic SFP leakage) for substantial amounts of time 59; and/or 3) a combination of the above
 
====3.6.2 Individual====
Upgradient Monitoring Well Tritium and Tracer Analyses (MW-31 and MW-32)  As discussed in the preceding section, individual wells clearly exhibiting no trend or an increasing trend are confined to monitoring locations MW-31 and MW-32. These two monitoring installations are located up- and cross-gradient from the Unit 2 SFP. While not downgradient of the SFP from a groundwater flow perspective, Tritium leakage from the SFP can still migrate to these locations via vadose zone transport above the water table along dipping bedrock fractures. During the site investigation work, a tracer test was performed which clearly demonstrated that water released proximate to the SFP foundations (adjacent to MW-30) does migrate to the east and south past MW-31 and MW-32 prior to entering the water table, and then flows with the groundwater through these wells and then to the river to the west. This vadose zone migration mechanism is discussed more fully in the Hydrogeologic Site Investigation Report. In addition to the general persistence of Tritium throughout the Unit 2 plume 57 and the absents of a clear downward trend in Tritium concentrations with time at these two specific monitoring installations, the upper-most interval in both MW-31 and MW-32 have shown an abrupt increase in Tritium over the last two quarters (Q1 and Q2 58 09). These data can be explained by either: 1) an ongoing small episodic (< 5L/day) leak in the IP2- SFP; 2) a "retention mechanism" in the saturated and unsaturated zones under the IP2-SFP that can retain substantial volumes of highly Tritiated water (e.g., historic SFP leakage) for substantial amounts of time 59; and/or 3) a combination of the above
: 60. While Tritium concentrations in the groundwater plume could be impacted by both an ongoing leak and the retention mechanisms cited above, tracer concentrations in the groundwater cannot be replenished by SFP leakage. Therefore, a 57 The Unit 2 Tritium plume has decreased in concentration relative to the samples taken just after identification of the 2005 shrinkage crack leak (the earliest samples taken from directly below the SFP yielded Tritium concentrations over 600,000 pCi/L, while more recent maximum concentrations have been below one-half of those initial concentrations), and continues to show a general trend of decreasing concentrations over time. However, the plume still exhibits concentrations greater than we can exp lain if there were no further Tritium inputs to the groundwater; i.e., the plume would attenuate more quickly than observed based on
: 60. While Tritium concentrations in the groundwater plume could be impacted by both an ongoing leak and the retention mechanisms cited above, tracer concentrations in the groundwater cannot be replenished by SFP leakage. Therefore, a 57 The Unit 2 Tritium plume has decreased in concentration relative to the samples taken just after identification of the 2005 shrinkage crack leak (the earliest samples taken from directly below the SFP yielded Tritium concentrations over 600,000 pCi/L, while more recent maximum concentrations have been below one-half of those initial concentrations), and continues to show a general trend of decreasing concentrations over time. However, the plume still exhibits concentrations greater than we can exp lain if there were no further Tritium inputs to the groundwater; i.e., the plume would attenuate more quickly than observed based on
: 1) Tritium's lack of partitioning to solid materials in the subsurface; 2) the crystalline nature and low storativity of the bedro ck; and 3) the computed and observed groundwater transport rate. 58 While this document is the Q1 09 report, some post-Q1 sampling data became available prior to report finalization. As such, data germane to the discussion of Unit 2 SFP integrity was included herewith.      59 This hypothesized "retention mechanism" is supported by our understanding of the construction methods used for the IP2-SFP and adjacent structures, evaluations of contaminant concentration variability trends over short timeframes and precipitation ev ents, as well as the original tracer test results, as further described in Sections 7.0 and 8.0 of the Hydrologic Site Investigation Report. 60 It is also recognized that the potential exists for a fourth potential source of Tritium; that is any other leak or spill ab ove the upgradient portions of the Unit 2 Tritium plume.
: 1) Tritium's lack of partitioning to solid materials in the subsurface; 2) the crystalline nature and low storativity of the bedro ck; and 3) the computed and observed groundwater transport rate. 58 While this document is the Q1 09 report, some post-Q1 sampling data became available prior to report finalization. As such, data germane to the discussion of Unit 2 SFP integrity was included herewith.      59 This hypothesized "retention mechanism" is supported by our understanding of the construction methods used for the IP2-SFP and adjacent structures, evaluations of contaminant concentration variability trends over short timeframes and precipitation ev ents, as well as the original tracer test results, as further described in Sections 7.0 and 8.0 of the Hydrologic Site Investigation Report. 60 It is also recognized that the potential exists for a fourth potential source of Tritium; that is any other leak or spill ab ove the upgradient portions of the Unit 2 Tritium plume.
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data:  Natural bedrock fractures in the unsaturated zone were computed to result in a bedrock porosity of 0.3%; of which 10% (0.03% porosity) were assumed to be dead ended and could provide storage capacity;  Construction blasting was assumed to increase the natural fracturing of the bedrock proximate to foundations by a factor of 3, with 2/3s of these fractures being dead ended  resulting in a storage porosity of 0.06%;  A six inch soil backfill thickness with a porosity of 20% was assumed to be saturated above foundation working mats. The above porosities were applied only to areas which could intercept Unit 2 SFP leakage prior to it reaching the water table. As such, zones utilized in the computation included:  Bedrock only between elevation 51 (bottom of Unit 2 SFP) and the water table elevation;  Bedrock only in areas above the upper portion of the plume which appear to be potential source areas;  Backfill above structure mud mats only in areas east of VCB and above plume; and  Soil in the immediate vicinity of MW-111. As such, potential storage volume not considered, so as to be conservative, include:  Any bedrock fractures or soil porosity within the saturated zone;  Any capillary retention in vadose zone soils;  Any mud mat not above the plume;  Any mud mat west of the VCB;  Anything above elevation 51'; and  Anything downgradient of MW-111 uncertainty associated with the conservative final reduction in the assumed leak rate of the weld imperfection (i.e., from 50 gpd to 5 gpd). 72 In addition to storage in the vadose zone, storage can also occur in dead end fractures, etc in the saturated zone.
data:  Natural bedrock fractures in the unsaturated zone were computed to result in a bedrock porosity of 0.3%; of which 10% (0.03% porosity) were assumed to be dead ended and could provide storage capacity;  Construction blasting was assumed to increase the natural fracturing of the bedrock proximate to foundations by a factor of 3, with 2/3s of these fractures being dead ended  resulting in a storage porosity of 0.06%;  A six inch soil backfill thickness with a porosity of 20% was assumed to be saturated above foundation working mats. The above porosities were applied only to areas which could intercept Unit 2 SFP leakage prior to it reaching the water table. As such, zones utilized in the computation included:  Bedrock only between elevation 51 (bottom of Unit 2 SFP) and the water table elevation;  Bedrock only in areas above the upper portion of the plume which appear to be potential source areas;  Backfill above structure mud mats only in areas east of VCB and above plume; and  Soil in the immediate vicinity of MW-111. As such, potential storage volume not considered, so as to be conservative, include:  Any bedrock fractures or soil porosity within the saturated zone;  Any capillary retention in vadose zone soils;  Any mud mat not above the plume;  Any mud mat west of the VCB;  Anything above elevation 51'; and  Anything downgradient of MW-111 uncertainty associated with the conservative final reduction in the assumed leak rate of the weld imperfection (i.e., from 50 gpd to 5 gpd). 72 In addition to storage in the vadose zone, storage can also occur in dead end fractures, etc in the saturated zone.
Section 3.0 Data Evaluation June 22, 2010 Page 3-25 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 The above outlined computations resulted in an estimated storage capacity of 38Ci. Tritium Storage Relative to Release Rate -  As discussed above, the Tritium in storage must be large relative to the release rate needed to maintain the plume. Otherwise, the yearly reduction in the stored activity would quickly begin to deplete the storage, which would then be reflected in a decreasing release rate, and thus an attenuating total plume activity (i.e., not constant as potentially indicated by the histogram). The total estimated Tritium activity in storage has been computed to be at least 4.5 Ci. This is the lower of the values estimated for Tritium released (4.5 Ci) and storage capacity (38 Ci). This value is 45 times larger than the estimated Tritium release rate required to maintain the Unit 2 Tritium plume in its current state. As such, it appears that there is more than sufficient Tritium in storage to maintain the existing plume for at least ten years. That is, after ten years of 0.1 Ci/yr storage depletion, 35 times the annual depletion would still remain. Therefore, one would not expect to see a substantial decrease in rate of release from storage over that period of time, and thus the plume activity should remain stable.
Section 3.0 Data Evaluation June 22, 2010 Page 3-25 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 The above outlined computations resulted in an estimated storage capacity of 38Ci. Tritium Storage Relative to Release Rate -  As discussed above, the Tritium in storage must be large relative to the release rate needed to maintain the plume. Otherwise, the yearly reduction in the stored activity would quickly begin to deplete the storage, which would then be reflected in a decreasing release rate, and thus an attenuating total plume activity (i.e., not constant as potentially indicated by the histogram). The total estimated Tritium activity in storage has been computed to be at least 4.5 Ci. This is the lower of the values estimated for Tritium released (4.5 Ci) and storage capacity (38 Ci). This value is 45 times larger than the estimated Tritium release rate required to maintain the Unit 2 Tritium plume in its current state. As such, it appears that there is more than sufficient Tritium in storage to maintain the existing plume for at least ten years. That is, after ten years of 0.1 Ci/yr storage depletion, 35 times the annual depletion would still remain. Therefore, one would not expect to see a substantial decrease in rate of release from storage over that period of time, and thus the plume activity should remain stable.
3.6.4 Collection Box Data  As discussed more fully in the Hydrogeologic Site investigation report, once the 2005 shrinkage crack leak was found, leakage from the crack was thereafter contained and collected, and no longer could/can enter the subsurface environment. The containment currently consists of a stainless steel box ("Collection Box") which was sealed to the concrete wall over the crack area in February 2006
 
====3.6.4 Collection====
Box Data  As discussed more fully in the Hydrogeologic Site investigation report, once the 2005 shrinkage crack leak was found, leakage from the crack was thereafter contained and collected, and no longer could/can enter the subsurface environment. The containment currently consists of a stainless steel box ("Collection Box") which was sealed to the concrete wall over the crack area in February 2006
: 73. This box is drained to a collection vessel where the volume is measured and routine samples are taken for analysis. As shown on Figure I-1, the leak rate has been episodic with typical prolonged rates of < 20mL/day, separated by relatively shorter periods of higher leak rates (>200 mL/day). The periods of higher leak rate generally appeared to occur during the spring, at least initially. It is important to view this leak rate in the context of the total leak volume, which has only been approximately 100 liters (about 25 gallons) over the four years since the leak was discovered, or a little over two fluid ounces per day. Once the high leak rate just after initial crack discovery subsided, the rate has averaged only a little over one fluid once per day. It is also important to note that there have been no detections of short lived radionuclides in the leakage water after the 2005 discovery of the leakage
: 73. This box is drained to a collection vessel where the volume is measured and routine samples are taken for analysis. As shown on Figure I-1, the leak rate has been episodic with typical prolonged rates of < 20mL/day, separated by relatively shorter periods of higher leak rates (>200 mL/day). The periods of higher leak rate generally appeared to occur during the spring, at least initially. It is important to view this leak rate in the context of the total leak volume, which has only been approximately 100 liters (about 25 gallons) over the four years since the leak was discovered, or a little over two fluid ounces per day. Once the high leak rate just after initial crack discovery subsided, the rate has averaged only a little over one fluid once per day. It is also important to note that there have been no detections of short lived radionuclides in the leakage water after the 2005 discovery of the leakage
: 74. In addition, while the Tritium activity increases with increased leak rate 75 , the levels are well below the activity in the pool
: 74. In addition, while the Tritium activity increases with increased leak rate 75 , the levels are well below the activity in the pool
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groundwater regime. The amount of Tritium activity flowing in the groundwater plume to the river has been computed to be approximately 0.1 Ci/yr. For pool water at 30,000,000 pCi/L, this equates to leak rate of approximately 10 L/day, or about 2.5 gallons per day (gpd). Therefore, it would be expected that a new leak at a rate of 2.5 gpd would double the Tritium levels in the plume over time. A doubling of the Tritium levels should be detectable once most of the wells exhibit this trend.
groundwater regime. The amount of Tritium activity flowing in the groundwater plume to the river has been computed to be approximately 0.1 Ci/yr. For pool water at 30,000,000 pCi/L, this equates to leak rate of approximately 10 L/day, or about 2.5 gallons per day (gpd). Therefore, it would be expected that a new leak at a rate of 2.5 gpd would double the Tritium levels in the plume over time. A doubling of the Tritium levels should be detectable once most of the wells exhibit this trend.
Therefore, the increasing trend in Tritium levels from a 2.5 gpd new leak may take an extended time to become evident. Another metric that can provide potential insight into the minimum potential leak rate is the tracer study previously conducted at the IPEC site. Based on a computation accounting for tracer and Tritium source concentrations, as compared to their respective detection limits, it appears that a Tritium leak of on the order of 5 gallons should be detectable at MW-32 (the monitoring installation with the greatest response during the tracer test). Other monitoring installations proximate to the Unit 2 SFP would therefore be expected to require higher leak rates based on the tracer test. In addition, it is also noted that the tracer injection was all introduced into the formation over a very short period of time. Therefore, a higher leak volume would likely be required if it occurred over a longer period of time. Finally, conclusions based on the tracer testing are all contingent on the location of the single tracer injection relative to the monitoring well locations. Leaks in other SFP locations would be expected to behave differently. Given the above data and analyses, and also accounting for the substantial level of uncertainty involved, we believe that a new leak of SFP water of a magnitude between 10 to 30 gpd should be detectable with the current Long Term Monitoring Program within a relatively few monitoring quarters.
Therefore, the increasing trend in Tritium levels from a 2.5 gpd new leak may take an extended time to become evident. Another metric that can provide potential insight into the minimum potential leak rate is the tracer study previously conducted at the IPEC site. Based on a computation accounting for tracer and Tritium source concentrations, as compared to their respective detection limits, it appears that a Tritium leak of on the order of 5 gallons should be detectable at MW-32 (the monitoring installation with the greatest response during the tracer test). Other monitoring installations proximate to the Unit 2 SFP would therefore be expected to require higher leak rates based on the tracer test. In addition, it is also noted that the tracer injection was all introduced into the formation over a very short period of time. Therefore, a higher leak volume would likely be required if it occurred over a longer period of time. Finally, conclusions based on the tracer testing are all contingent on the location of the single tracer injection relative to the monitoring well locations. Leaks in other SFP locations would be expected to behave differently. Given the above data and analyses, and also accounting for the substantial level of uncertainty involved, we believe that a new leak of SFP water of a magnitude between 10 to 30 gpd should be detectable with the current Long Term Monitoring Program within a relatively few monitoring quarters.      
3.6.6 Conclusions - Unit 2 SFP integrity  Overall, the preponderance of the data demonstrate that the Tritium activity in the plume has decreased substantially since groundwater monitoring began. However, it is also apparent that the rate of decrease is slower than would be expected if no additional Tritium was being 79 While this leakage cannot enter the environment, it is possible that other unidentified cracks exist in the SFP concrete wal l which could release similarly generated water into the subsurface formation.
 
====3.6.6 Conclusions====
- Unit 2 SFP integrity  Overall, the preponderance of the data demonstrate that the Tritium activity in the plume has decreased substantially since groundwater monitoring began. However, it is also apparent that the rate of decrease is slower than would be expected if no additional Tritium was being 79 While this leakage cannot enter the environment, it is possible that other unidentified cracks exist in the SFP concrete wal l which could release similarly generated water into the subsurface formation.
Section 3.0 Data Evaluation June 22, 2010 Page 3-28 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 released into the groundwater flow regime. The original CSM, as outlined in the Hydrogeologic Site Investigation Report, includes a "retention mechanism" that stores Tritiated water from historic liner leaks in the vadose zone, and then gradually and episodically releases some of this Tritium to the groundwater over time. The currently available data and analyses summarized herein, particularly including the most recent tracer data, provide further confirmation of the existence of this mechanism. This retention mechanism is expected to be capable of continuing to support the existing plume activity for at least five to ten years into the future, without any additional contribution of Tritium from a continuing or new leak in the Unit 2 fuel pool.
Section 3.0 Data Evaluation June 22, 2010 Page 3-28 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 released into the groundwater flow regime. The original CSM, as outlined in the Hydrogeologic Site Investigation Report, includes a "retention mechanism" that stores Tritiated water from historic liner leaks in the vadose zone, and then gradually and episodically releases some of this Tritium to the groundwater over time. The currently available data and analyses summarized herein, particularly including the most recent tracer data, provide further confirmation of the existence of this mechanism. This retention mechanism is expected to be capable of continuing to support the existing plume activity for at least five to ten years into the future, without any additional contribution of Tritium from a continuing or new leak in the Unit 2 fuel pool.
Therefore, the existing Tritium plume behavior does not provide a compelling argument that there is a continuing leak in the Unit 2 SFP. Given this conclusion and the recognition that Entergy has terminated all identified leaks in the Unit 2 SFP, the Unit 2 Tritium plume satisfies the requirements for Monitored Natural Attenuation (MNA). However, it is also recognized that there could still be a small continuing leak in the SFP that is also providing Tritium to the plume in addition to that released from the retention mechanism. The most recent data from the leak collection box indicates that pool water may be migrating around/through the liner and recharging the interstitial space between the liner and the SFP concrete wall. While any water that is released through the 2005 shrinkage crack in the wall is captured, contained and disposed of, and thus can not impact the groundwater, there may be other additional cracks in the wall which are not contained. If such additional cracks exist, it would not be unlikely that interstitial water could escape and eventually enter the groundwater regime (after also recharging the retention mechanism). While a continuing leak from the Unit 2 SFP cannot be ruled out, if such a leak(s) exists, it is small. Based on the analyses summarized above, we believe that the maximum leak rate from the Unit 2 SFP that could potentially remain undetected by the groundwater monitoring system is less than 10 to 30 gpd. It is also likely that if a small leak exists in the liner, it should not get worse with time, as based on liner evaluations previously conducted by Entergy
Therefore, the existing Tritium plume behavior does not provide a compelling argument that there is a continuing leak in the Unit 2 SFP. Given this conclusion and the recognition that Entergy has terminated all identified leaks in the Unit 2 SFP, the Unit 2 Tritium plume satisfies the requirements for Monitored Natural Attenuation (MNA). However, it is also recognized that there could still be a small continuing leak in the SFP that is also providing Tritium to the plume in addition to that released from the retention mechanism. The most recent data from the leak collection box indicates that pool water may be migrating around/through the liner and recharging the interstitial space between the liner and the SFP concrete wall. While any water that is released through the 2005 shrinkage crack in the wall is captured, contained and disposed of, and thus can not impact the groundwater, there may be other additional cracks in the wall which are not contained. If such additional cracks exist, it would not be unlikely that interstitial water could escape and eventually enter the groundwater regime (after also recharging the retention mechanism). While a continuing leak from the Unit 2 SFP cannot be ruled out, if such a leak(s) exists, it is small. Based on the analyses summarized above, we believe that the maximum leak rate from the Unit 2 SFP that could potentially remain undetected by the groundwater monitoring system is less than 10 to 30 gpd. It is also likely that if a small leak exists in the liner, it should not get worse with time, as based on liner evaluations previously conducted by Entergy

Revision as of 13:30, 13 October 2018

Entergy Pre-Filed Evidentiary Hearing Exhibit ENT00335A - GZA IPEC Quarterly Long-Term Groundwater Monitoring Report Quarter One 2009 (Report No. 5) - Cover Through Figure 4A
ML12089A595
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Issue date: 06/22/2010
From:
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To:
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SECY RAS
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Text

FINAL IPEC QUART ONG-TERM GRO RT INDIAN POI Y CENTER EAR N ORTHEAST , I NC. Y ORK 10511 ON BEHALF OF: , I NC. TER 10511-0308 PREPARED BY: IRONMENTAL OF N EW Y ORK 2010 7869.92 ERLY L UNDWATER MONITORING REPO Q UARTER O NE 2009 (R EPORT N O. 5) NT ENERG BUCHANAN, NEW YORK PREPARED FOR: E NTERGY N UCL I NDIAN P OINT ENERGY CENTER 450 BROADWAY BUCHANAN , N EW ENTERGY S ERVICES I NDIAN P OINT ENERGY C EN 295 BROADWAY , SUITE 3 P.O. BOX 308 BUCHANAN , NY GZA G EO E NV 440 N INTH AVENUE , 18 TH F LOOR N EW YORK , N EW Y ORK 10001 J UNE 22, F ILE N O. 01.001 GZA GeoEnvironmental, Inc. Copyright © 2010 GZA GeoEnvironmental of New York GZA Engineers and GeoEnvironmental, Inc.

Scientists June 22, 2010 File No. 01.0017869.92 Mr. Patrick Donahue Indian Point Energy Center 295 Broadway, Suite 3 P.O. Box 308

Buchanan, NY 10511-0308

Re: FINAL IPEC Quarterly Groundwater Monitoring Report One Edgewater Drive Norwood Massachusetts 02062 781-278-3700 FAX 781-278-5701 http://www.gza.com Quarter One 2009 (Report No. 5)

Indian Point Energy Center 450 Broadway Buchanan, New York 11501

Dear Mr. Donahue:

GZA GeoEnvironmental of New York (GZA) is pleased to provide this Quarterly Groundwater Monitoring Report for Indian Point Energy Center located at 450 Broadway, Buchanan, NY.

We trust that this information satisfies your present needs. Should you need any additional information, please do not hesitate to call us at (781) 278-3805.

Very truly yours, GZA GEOENVIRONMENTAL OF NEW YORK

Josh Simpson Michael Powers, PE Engineer I Consultant/Reviewer

David Rusczyk, PE Matthew J. Barvenik, LSP Senior Project Manager Senior Principal

Attachments: 2 Copies Copyright 2010 GZA GeoEnvironmental, Inc.

FINAL QUARTERLY LONG-TERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

June 22, 2009 Table of Contents 1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 TABLE OF CONTENTS Page 1.0EXECUTIVE

SUMMARY

.................................................................................................... 1-12.0SCOPE OF WORK ............................................................................................................. 2-12.1Groundwater Elevation Measurement

..................................................................... 2-12.2Groundwater Sampling ........................................................................................... 2-12.3Vapor Containment Building Foundation Drain Sampling ....................................... 2-22.4Preventative Maintenance

....................................................................................... 2-32.5Confirmatory Sample Collection

.............................................................................. 2-33.0DATA EVALUATION ......................................................................................................... 3-13.1Groundwater Mass Flux .......................................................................................... 3-13.1.1Groundwater Mass Flux Computation ......................................................... 3-13.1.2Quarterly Groundwater Mass Flux Calibration ............................................ 3-23.2Groundwater Sampling ........................................................................................... 3-43.2.1Groundwater Sampling Results ................................................................... 3-53.3Radionuclide Release Rates ................................................................................... 3-53.4SSCs and Property Boundary Monitoring ............................................................... 3-63.4.1Previous Q4-2008 Investigation Level Exceedances .................................. 3-83.4.2Q1-2009 Boundary Investigation Levels ................................................... 3-103.4.3Q1-2009 SSC Investigation Levels ........................................................... 3-103.4.4Conclusions - Boundary and SSC Leak Detection Monitoring .................. 3-133.5Plume Natural Attenuation Monitoring .................................................................. 3-143.6Unit 2 Spent Fuel Pool Integrity Analysis .............................................................. 3-153.6.1Individual Downgradient Monitoring Well Tritium Analyses ....................... 3-163.6.2Individual Upgradient Monitoring Well Tritium and Tracer Analyses (MW-31 and MW-32)

............................................................................................... 3-193.6.3Tritium Plume Total Activity Analysis ........................................................ 3-213.6.4Collection Box Data ................................................................................... 3-253.6.5Minimum Detectable Leak Rate ................................................................ 3-273.6.6Conclusions - Unit 2 SFP integrity ............................................................ 3-2

74.0CONCLUSION

S AND PLANNED ACTIVITIES ................................................................. 4-1 FINAL QUARTERLY LONG-TERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

June 22, 2009 Table of Contents 2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 TABLES Table 1Groundwater Sampling Methods, Equipment, Frequency, and DepthsTable 22009 1st Quarter Low Tide Groundwater ElevationsTable 32009 1st Groundwater Analytical Results and AveragesTable 42009 1st Quarter Groundwater Analytical ResultsTable 5Historic Groundwater Analytical Results FIGURES Figure 1Site Location PlanFigure 2Site PlanFigure 3Lower Hudson Valley Geologic MapFigure 4Current and Potential Future SSC Source LocationsFigure 4AUnit 3 - Cross-Section C-C"Figure 51st Quarter 2009 Shallow and Deep Groundwater ContoursFigure 5A1 st Quarter 2009 Long-Term Transducer Monitoring Evaluation MapFigure 61st Quarter 2009 Average Tritium Activity MapFigure 71st Quarter 2009 Average Strontium-90 Activity MapFigure 7ASr-90 Baseline Analysis - Unit 1 Defueling EvaluationFigure 81st Quarter 2009 Average Cesium, Cobalt, and Nickel Activity Map APPENDICES Appendix A:LimitationsAppendix B:Transducer Installation LogsAppendix C:Chains of CustodyAppendix D:1st Quarter 2009 Sampling Data SheetsAppendix E:Post-Q1 2009 Mid-Quarter Sampling Data SheetsAppendix F:Dose CalculationsAppendix G:Unit 2 Tritium Plume Trend AnalysesAppendix H:Recent Tracer Testing DataAppendix I:Leak Collection Box DataAppendix J:Lafarge Well LAF-002 RefurbishmentAppendix K:Groundwater Level Transducer Redeployment FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

June 22, 2010 Page 1-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92

1.0 EXECUTIVE

SUMMARY

On behalf of Entergy Nuclear Northeast, Inc., GZA GeoEnvironmental of New York (GZA) has completed the Q1 2009 quarterly groundwater monitoring for the Indian Point Energy Center (IPEC). The radionuclide concentrations measured during Q1 2009 were combined with

previous quarterly data 1 to compute rolling average concentrations reflective of groundwater contaminant levels over the past twelve months. These data were multiplied by the associated individual groundwater flux values, derived from the Precipitation Mass Balance Model, to compute yearly average radionuclide release rates to the Discharge Canal and Hudson River. The Conceptual Site Model (CSM) continues to be validated through: 1) the ongoing verification of the Precipitation Mass Balance Model calibration, as based on groundwater elevation data collected in 2007, 2008, and 2009 2; 2) the behavior of both the Unit 1 Strontium plume and the Unit 2 Tritium plume; and additional tracer data collected in 2008/2009. Based on the quarterly groundwater sampling data for Q1 2009, GZA concludes that groundwater contaminants continue to migrate toward the Hudson River to the West, and have not migrated off the Site to the North, East or South. The Q1 2009 data indicate that the Unit 2 Tritium and Unit 1 Strontium plumes contain radionuclide levels that are generally at or below those measured during previous quarterly monitoring events. We therefore conclude that no new leaks to groundwater have been detected in the Structures, Systems and Components (SSCs) monitored, with two exceptions. The first exception involves the temporary, increased leakage from the Unit 1 Spent Fuel Pool Complex (SFPs), as anticipated during the final removal of the residual fuel rods for ISFSI storage. This additional leakage during defueling was verified by the Long Term Monitoring Program, with measurement of a pronounced increase in radionuclide levels in the groundwater immediately downgradient of the Unit 1 SFPs. The second exception involves the detection of leakage from valves associated with the waste distillation tanks, which contain elevated levels of Tritium, located to the east of the Unit 1 Fuel Storage Building (FSB). While these valves are located within the FSB and the leak was initially detected visually and quickly repaired, this leakage was also independently detected by the Long Term Monitoring Program, with the measurement of a pronounced increase in Tritium levels in the groundwater proximate to these tanks. These data continue to support the validity of the current CSM for use as a basis for Long Term Monitoring Program design. Based on the Q1 2009 data, as well as that collected during previous quarters, it currently appears that the Tritium I.L.s originally established are somewhat too sensitive relative to natural seasonal/precipitation-driven transient variations in radionuclide activities, as well as the variability inherent in the laboratory analyses. Relative to Strontium from the Unit 1 SFPs, the increases in activity in a number of monitoring points, due to the recent defueling activities, limit our ability to establish Strontium baseline levels for assessment of new I.L.s pursuant to the Monitored Natural Attenuation (MNA) of this plume. It is anticipated that this additional Strontium activity will take a number of quarters to flush through the groundwater flow system 1 In cases where samples were taken in addition to the quarterly samples (e.g., mid-quarter samples associated with refueling events or confirmatory samples to evaluate potentially false results), the additional sample data was included in the yearly averages. Prior to the Q1 09 report, the results of the mid-quarter and confirmatory samples were not included in the yearly average calculation. 2 The formulation and basis for the Precipitation Mass Balance model, as well as the overall CSM, is presented in the Hydrogeologic Site Investigation Report, January 7, 2008, prepared by GZA GeoEnvironmental, Inc, on behalf of Enercon Services, Inc., for Entergy Nuclear Northeast, Indian Point Energy Center, 450 Broadway, Buchanan, NY 10511.

Section 1.0 Executive Summary June 22, 2010 Page 1-2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 and attenuate to reasonably stable levels. .As such, the existing I.L.s will continue to be used until sufficient data is collected to allow re-evaluation. The data further indicate that the Unit 1 and Unit 2 plumes have remained relatively stable over this monitoring period, and thus are exhibiting an overall slowly decreasing trend in radionuclide levels, when the plumes are viewed in their entirety and past release events and expected seasonal variability in the sampling data are accounted for. Furthermore, the overall, continued reduction in Tritium levels in the Unit 2 plume is consistent with a conclusion that the Unit 2 SFP had ceased leaking after the transfer canal "pin hole leak" was repaired in late 2007. As such, the Unit 2 Tritium plume satisfies the requirements for Monitored Natural Attenuation (MNA). In addition to reaching this conclusion through visual inspection of the limited available data, as in previous quarterly reports, more quantitative data analyses have been conducted for inclusion in this Q1 2009 quarterly report 3 (see Section 3.6). The results of these more quantitative analyses support the previous, more qualitative analyses; i.e., that the existing data are consistent with a conclusion that the Unit 2 SFP is no longer leaking. Although these data do not definitively rule out the possibility of a remaining small leak, and while it is not possible to quantify the size of the minimum detectable leak with any degree of certainty, we believe that the maximum leak rate from the Unit 2 SFP that could potentially remain undetected by the groundwater monitoring system is less than 10 to 30 gpd. The primary difficulty in definitively establishing if any leaks remain in the Unit 2 SFP is associated with the episodic release of Tritium from that stored in the subsurface via natural and anthropogenic retention mechanisms

4. The validity of the CSM, which incorporates these storage mechanisms, is now even more certain given the additional tracer test analyses provided herein. Therefore, the ultimate confirmation of the above conclusions will require monitoring over a number of years so as to demonstrate continued depletion of Tritium from the retention mechanisms and allow ranges in seasonal variation to be adequately reflected in the monitoring data. While it is not yet possible to conclude that no leaks of any size remain in the Unit 2 SFP, it is also likely that if a small leak does exist, it is not getting worse with time, as based on liner evaluations previously conducted by Entergy
5. It is further emphasized that while a leak of 10 to 30 gpd should be large enough to be readily detectable with the existing Long Term Monitoring Program, this amount of Tritium release to the river is still small compared to that which is currently permitted for release to the river through the Discharge Canal. Overall, GZA believes that continued monitoring will further demonstrate decreasing long term trends in groundwater contaminant activities over time, for both the Unit 1 and Unit 2 plumes, given the source interdictions completed to date by Entergy.

3 The results of these more quantitative analyses have previously been presented to the NRC during the Deviation Memo Closeout Meeting of August 18 and 19,2009. Additional analyses were then also performed in response to NRC suggestions presented at that meeting. The preparation and finalization of this quarterly report was delayed so as to include these additional analyses. Given the timing of the NRC meeting, some data beyond that associated with Quarter 1 became available and was therefore used to increase the robustness of the associated analyses and is thus included herein. 4 These retention mechanisms are discussed along with the CSM in the previously cited Hydrogeologic Site Investigation Report. 5 As part of the overall Unit 2 SFP liner integrity evaluation, Entergy undertook testing of a number of welds relative to the potential for ongoing corrosion, such as due to Microbial-Influenced Corrosion (MIC). It was concluded that there was no evidence of ongo ing corrosion.

FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

June 22, 2010 Page 2-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92

2.0 SCOPE

OF WORK During Q1 2009, GZA performed groundwater monitoring activities at IPEC in Buchanan, New York (Site) as part of IPEC's overall Long Term Groundwater Monitoring Program (LTMP) at the Site 6. The overall foundation for the development and execution of this LTMP is based on the CSM, a description of which is contained within GZA's Hydrogeologic Site Investigation Report

7. The scope of work completed for this quarter's monitoring is described in the Sections below.

Refer to Figures 1 and 2 for a Site Location Plan and Site Plan. Figure 3 provides a Lower Hudson Valley Geologic Map and Figure 4 summarizes Current and Potential Future SSC Source Locations.

2.1 Groundwater

Elevation Measurement GZA currently maintains transducers and dataloggers as part of the monitoring instrumentation located across the Site

8. These instruments record groundwater elevation and temperature measurements at regular time intervals
9. Transducer installation logs are presented in Appendix B. Following the quarterly sampling, GZA downloaded groundwater elevation data collected by the pressure transducers over the duration of the quarter. Using these data, GZA developed Site groundwater elevation contours at low river tide conditions for the upper and lower portions of

bedrock. These data are presented on Table 2 and Figure 5 for the December 8, 2008 low river tide. The groundwater contour map is used to compute groundwater flow gradients, which are used to provide ongoing calibration of the Precipitation Mass Balance Model (as used in IPEC's radiological dose computations - see Section 3.1). It is anticipated that sufficient seasonal groundwater elevation data will have been collected through the middle of 2009 to verify the suitability of the model for dose computation. As such, it is currently our intent to substantially reduce the scope of groundwater elevation data collection after that time.

2.2 Groundwater

Sampling During Q1 2009, GZA collected groundwater samples for radionuclide analysis from scheduled sampling intervals within select monitoring installations ("wells") as shown in Table 3. In addition, GZA split groundwater samples from select locations between Entergy, the Nuclear Regulatory Commission (NRC), and the New York State Department of Environmental Conservation (NYSDEC). Chains of Custody for samples collected by GZA are presented

in Appendix C. 6 Refer to the "Final Quarterly Long-Term Groundwater Monitoring Report Q2-Q4 2007 (Report No. 1)," dated May 2008 for Site background information and a description of the environmental setting. 7 Hydrogeologic Site Investigation Report, January 7, 2008, prepared by GZA GeoEnvironmental, Inc, on behalf of Enercon Services, Inc., for Entergy Nuclear Northeast, Indian Point Energy Center, 450 Broadway, Buchanan, NY 10511. 8 It is anticipated that subsequent to the Q2 2009 quarterly monitoring report, the transducer monitoring program will be reduced to only a select set of locations that will continue to be routinely monitored with groundwater level transducers. 9 Currently, transducers record groundwater elevation and temperature readings on a 20 minute time interval. However it is anticipated that during the later half of 2009, this time interval may be adjusted.

Section 2.0 Scope of Work June 22, 2010 Page 2-2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 GZA used different types of pumping equipment depending upon the sampling method and the characteristics of the individual monitoring installation

10. Table 1 lists the monitoring installations sampled, the sampling depths and elevations within sampling installations, and the sampling method and equipment used. In general, GZA implemented two basic methods of sampling to collect representative groundwater samples: the Low Flow method and a modified well volume purge method. The Low Flow method allows collection of representative groundwater samples from discrete sampling zones within a monitoring installation, while limiting the accumulation of wastewater
11. As agreed by Entergy Nuclear Northeast, the NRC, NYSDEC, and GZA, the modified traditional purge method 12 allows for the collection of a representative groundwater sample from a monitoring installation after purging 1.5 volumes of water. We implemented this method in wells where low flow sampling was not practical
13. Sampling Data Sheets summarizing water quality data and sampling information are presented in Appendix D. With all of the above sampling methods, GZA used dedicated sampling equipment, including polyethylene and/or nylon tubing and submersible electric pumps to the extent practical. The use of dedicated sampling equipment limits the possibility of cross-contamination between monitoring installations and/or individual multi-level samples within a single installation. Refer to Table 1 for a summary of the sampling methods, equipment, frequency, and depths employed during this quarter's groundwater monitoring round.

2.3 Vapor

Containment Building Foundation Drain Sampling GZA attempted to collect water samples from three manholes (B-1, B-6, and MH-5) on-Site to characterize discharge from foundation drains around and below the Unit 2 and 3 Vapor Containment Structures (the drains include both the foundation drains around the building periphery ("curtain drains") as well as those around the sumps near the middle of the structures). These drains are being used as an integral part of the early leak detection monitoring network. However, due to plant security precautions, GZA was unable to access these sampling points. The manholes at these catch basins are currently welded shut, as they were during the previous quarter (Q4 08). Entergy recently modified the covers of these three manholes to allow access to these sampling locations without compromising plant security and samples were collected from these locations during the Q2-2009 sampling round. Prior to Q3 08, GZA was able to sample the east drain line in manhole MH-5 to capture drainage from the Unit 2 Vapor Containment Foundation Drains. GZA also previously sampled the east drain line in manhole B-1 to capture drainage from the Unit 3 Vapor Containment South Curtain Drain. In addition, GZA sampled the manhole B-6 during earlier sampling quarters to capture drainage from the Unit 3 Vapor Containment North Curtain Drain and Reactor Sump

Foundation Drain

14.

10 Refer to Section 4.3 of the Final 2007 Quarterly Long-Term Groundwater Monitoring Report No. 1, dated May 2008, for sampling method and equipment selection rationale. 11 As described in: Low-Flow Sample Collection, GZA, 7/18/2007 12 As described in: Modified Traditional Groundwater Sample Collection, GZA, 7/18/2007 13 When external factors (such as well-surface-flooding from stormwater runoff or overland flow of plant component leaks) might have infiltrated the top of the well and impacted ambient groundwater conditions at a specific sampling location, GZA typically purged three to five volumes of water (using the modified traditional purge method) prior to collection of a sample to attempt to obtain a representative groundwater sample. 14 During early attempts to collect a discrete sample specifically representative of the east drain line in B-6, this catch basin was used as a clean water discharge point for some unidentified plant work. As a result, the height of the water within the manhole was Section 2.0 Scope of Work June 22, 2010 Page 2-3 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92

2.4 Preventative

Maintenance GZA performed general wellhead maintenance tasks, such as housekeeping of well vaults and roadboxes, and replacement of dedicated sampling equipment, tubing and transducers. In addition, LaFarge well LAF-002 (also initially referred to as MW-2), located at the LaFarge Gypsum Property to the south of Indian IPEC, was refurbished between November 24 th and 25 th, 2008. This well has been incorporated as a boundary well within the Long Term Monitoring Program at the request of the NRC. A description of the refurbishment activities is

provided in Appendix I Mid-Quarter Sample Collection During the spring of 2008, Indian Point Energy Center began moving spent fuel in Unit 1. Therefore, samples in addition to those collected for the routine quarterly sampling round were obtained from selected wells associated with Unit 1 to increase the monitoring frequency proximate to these events. Following the Q1 09 sampling event, additional groundwater samples were collected from MW-42-49, MW-50-66, MW-53-120, and IP1-CSS during the approximate halfway point between sampling quarters. The results of the mid-quarter samples collected after Q1 2009 are presented in Section 3.4 along with the quarterly data. Sampling Data Sheets summarizing water quality data and sampling information are presented in

Appendix E. 2.5 Confirmatory Sample Collection During the Q1-2009 sampling event, positive detections of cesium were reported within MW-66-21 and MW-67-173. Historically Cesium has not been detected within these two sampling intervals. Following the Q1 09 sampling event, additional groundwater samples were collected from these two sampling intervals during the approximate halfway point between sampling quarters to evaluate these detections of Cesium. The results of the confirmatory samples collected after Q1 2009 are presented in Section 3.4 along with the quarterly data. Sampling Data Sheets summarizing water quality data and sampling information are presented in Appendix E

. above the drain lines, which only permitted collection of a composite sample. By mid-year 2008, these discharge operations had ceased, and during the Q2 2008 attempt to collect a sample from th is location, GZA observed no flow of water through this drain. It is possible that flow within this drain is being restricted by sediment further upgradient in the drain.

FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

June 22, 2010 Page 3-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 3.0 DATA EVALUATION The Long Term Monitoring Program was designed to provide data to address four main objectives: Monitor groundwater flow rate and radionuclide concentrations to both detect and characterize current and potential future off-Site groundwater contaminant migration to the Hudson River, both via direct groundwater discharge to the river and through infiltration into the Discharge Canal, from abnormal radionuclide releases of liquid effluents, so as to allow computation of potential radiation dose to the public from these releases; Mo nitor groundwater proximate to Systems, Structures and Components (SSCs) which exhibit a credible probability of resulting in a visually undetected release of radionuclides to the subsurface carrying an activity level of significance; Monitor groundwater along the property boundary to confirm that contaminated groundwater is not migrating off of the property to locations other than the river; and Monitor the groundwater plumes identified on-Site to demonstrate overall reductions in total activity over time as is consistent with the requirements of Monitored Natural Attenuation (MNA) 15, the selected remediation for the IPEC Site. These objectives are consistent with and fully encompass the guidance provided in the NEI Groundwater Protection Initiative (GPI). The following sections provide data analyses to address these four objectives.

3.1 Groundwater

Mass Flux The following sections describe the computation of groundwater flow (mass flux) through the Site using the Precipitation Mass Balance Model and the continuing verification of the calibration of this model based on the most current quarterly groundwater elevation monitoring data.

3.1.1 Groundwater

Mass Flux Computation As presented in the Hydrogeologic Site Investigation Report, the groundwater flow in both the upper and lower flow zones is toward the power block area from the North, East and South, with subsequent discharge to the Hudson River to the West. A corollary to this conclusion is that there is no groundwater flow, and thus no off-Site radionuclide migration from the power block area to the North, East or South. Groundwater flow associated with infiltration from the watershed may be as deep as 350 feet, but still ultimately discharges to the river. To estimate groundwater flow (i.e., groundwater mass flux) beneath the Site, an analytical groundwater flow model was constructed based on a Precipitation Mass Balance Model using the Q2 2007 (reference) data set. This model is based on the precept that, on a long term average, the groundwater flowing through and discharging from the aquifer is equal to the watershed infiltration recharge. The Precipitation Mass Balance Model was also calibrated to groundwater fluxes based on a Darcy's Law Model with gradients also derived from Q2 2007 15 The selection of MNA as the remedial strategy for the Site is discussed further in the Hydrogeologic Site Investigation Report.

Section 3.0 Data Evaluation June 22, 2010 Page 3-2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 (June 1, 2007) groundwater elevation contours

16. This calibration not only verified the reasonableness of the overall groundwater flow rates predicted by the Precipitation Mass Balance Model, but also allowed further discretization of the groundwater flow into upper and lower flow zones as well as flow volumes upgradient and downgradient of the Discharge Canal. The mass balance approach recognizes that the only substantial source of recharge to the aquifer is areal recharge derived from precipitation. The previous ten year average for precipitation measured at the Site is 36 inches per year. Based on a USGS infiltration study 17 as well as the model calibration cited above, approximately 29 percent of the precipitation falling on pervious surfaces over the Site watershed area results in infiltration recharge to the groundwater. This computation indicates that the groundwater recharge rate is approximately 10.5 inches per year for the 2008/2009 monitoring period. Applying this information to the pervious surfaces within the six individual groundwater flow zones shown on Figure 4, it is estimated that approximately 5.2 gpm of groundwater flows into the Discharge Canal from the upper and lower zones. In addition, approximately 5.8 and 7.7 gpm of groundwater flows into the Hudson River from the upper and lower zones, respectively. Furthermore, the mass balance model accounts for storm water discharge 18 to both the Discharge Canal and directly to the Hudson River which are estimated to be 44 and 4 gpm, respectively. These flows can be further subdivided into flow zones as shown in the table

in Appendix F.

3.1.2 Quarterly

Groundwater Mass Flux Calibration As indicated above, the Precipitation Mass Balance Model was calibrated to groundwater fluxes computed based on a Darcy's Law Model. The calibration compared the total groundwater flow

values for each of the six flow zones computed independently 19 using the Precipitation Mass Balance Model and the Darcy's Law Model. The initial calibration was performed using gradients derived from contours of groundwater elevation measured on June, 1 2007, as described in the Hydrogeologic Site Investigation Report. As part of the initial portions of the Long Term Monitoring Program 20, this calibration is being evaluated quarterly to verify that seasonal changes in groundwater elevations do not materially impact the calibration. Therefore, quarterly groundwater elevations measured with pressure transducers at representative low river tides 21 have been used to construct groundwater elevation contours for the upper groundwater flow zone (water table contours) and the lower 16 Refer to the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008. 17 USGS. Water Use, Ground-Water Recharge and Availability, and Quality of Water in the Greenwich Area, Fairfield County, Connecticut and Westchester County, New York, 2000-2002.

18 The storm drains also include groundwater discharges from the foundation drains for Unit 2 and Unit 3 VC Buildings. 19 The two models use different sets of input parameters which are not dependent or related to each other. The groundwater flo w computed using the Precipitation Mass Balance Model is based on yearly precipitation amounts and the proportion of this precipitation that results in infiltration recharge to the groundwater. The Darcy's Law Model, on the other hand, is based on the measured groundwater flow gradients (as computed from groundwater elevation contours) and estimates of the formation hydraulic conductivity.

20 It is anticipated that eight quarters of seasonal groundwater elevation data should be sufficient to capture sufficient seasonal and yearly groundwater flow variation to verify the validity of the current calibration. It is anticipated that once these data are obtained, the model will be recalibrated to the data set that yields the largest groundwater flow values, so as to be conservative. The scope of groundwater elevation data collection will be reduced at that point (currently anticipated after Q2 2009 data collection).

21 Previous evaluations (provided in the Hydrogeologic Site Investigation Report) have shown that the shape of the groundwater contours is relatively unchanged at different times of the tidal cycle. However, the use of low tide contours provides the gre atest transient gradients (larger than the average gradient) and therefore result in a computed groundwater flux from the Site that i s biased high. Computation of radionuclide release rates to the river based on these data will therefore also have a high bias (i.e., they will be conservative).

Section 3.0 Data Evaluation June 22, 2010 Page 3-3 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 flow (potentiometric head contours), as shown in Figure 5 for Q1 2009. As summarized on the table included below, similar calibration analyses were performed for previous quarterly monitoring (2 nd , 3 rd, and 4 th quarters of 2007, and 1 st , 2 nd , 3 rd, and 4 th quarters of 2008) 22 , 23. Figure 5 shows that the deep zone groundwater contours continue to be a subdued reflection of the upper zone groundwater contours. This demonstrates that the anthropogenic effects at the Site are generally shallow. The groundwater flows computed using the Darcy's Law Model in each of the six flow zones, for each of the available quarterly data sets, are compared to the flows used in the calibrated Precipitation Mass Balance Model (see table below).

PRECIPITATION MASS BALANCE MODEL (GPM) DARCY LAW MODEL (GPM)

Q2 2007 Q2 2007 Q3 2007 Q4 2007 Q1 2008 Q2 2008 Q3 2008 Q4 2008 Q1 2009 Totals 18.8 18.8 18.4 18.2 20.6 25.7 23.7 23.5 23.5 Northern Clean Zone 1.4 0.7 0.7 0.5 0.9 0.4 0.4 0.4 0.5 Unit 2 North Zone 0.6 0.8 0.9 0.8 1.3 0.5 0.6 0.6 0.6 Unit 1/2 Zone 2.8 2.3 1.7 2.1 3.2 2.5 1.9 3.2 2.9 Unit 3 North Zone 3.2 4.5 4.4 4.1 5.5 6.6 5.1 4.6 5.0 Unit 3 South Zone 3.5 2.6 2.8 2.7 2.2 5.4 5.8 4.5 4.6 Southern Clean Zone 7.4 7.9 7.9 8.1 7.6 10.3 9.9 10.2 9.9 The new data for Q1 2009 continues to show that the overall groundwater flow through the Site during 2008 and the first quarter of 2009 is greater than previously computed for 2007 by approximately thirty percent. While the 2008 yearly rainfall was higher than that for 2007, it was only about five percent higher. However, it must also be noted that the computed quarterly flows are based on groundwater elevations measured at one time during the quarter. As such, the frequency/intensity of the rainfall just prior to this snapshot measurement has an impact on the flow computation beyond just its contribution to the total yearly or quarterly rainfall; i.e., heavy rain before a measurement round will tend to result in a high bias in the elevation measurements 24, and thus higher computed flow values. To attempt to quantify this transient impact, the rainfall was totaled for one week, two weeks and one month prior to each groundwater elevation measurement round, and then each amount was converted to an equivalent monthly rainfall rate. The maximum of these three values for each quarter was then

compared to the average monthly rainfall amount, which was based on averaging monthly rainfall totals over the last thirteen years. For the three 2007 quarters, the maximum monthly 22 See Quarterly Reports prepared by GZA including: Final 2007 Quarterly Report dated May 1, 2008; Quarter 1 2008 Quarterly Report dated May 15, 2008; Quarter 2 and 3 2008 Quarterly Report dated February 6, 2009 and Quarter 4 2008 Quarterly Report dated September 1, 2009. 23 There was no formal 1st quarter monitoring event in 2007 given that the Long Term Monitoring Program had not yet been initiated. 24 While heavy rainfall will elevate transient groundwater levels in all types of geologic deposits, its impact on fractured bedrock regimes such as exists at IPEC is particularly rapid and large due to the low storativity.

Section 3.0 Data Evaluation June 22, 2010 Page 3-4 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 rate was between 0.2 and 1.8 inches/month below the average. For the four 2008 and the 1 st 2009 quarters, the maximum monthly rate was between 1.0 and 1.8 inches/month above the average. These data may therefore explain the 30% higher computed quarterly flow rates for 2008 and 2009 when the total rainfall in 2008 was only 5% greater than in 2007. In addition, the process of drawing groundwater elevation contours from the individual data points evolved over time after 2007 as new information pursuant to the influence of plant structures on the groundwater flow field became available. This evolving process resulted in some changes to the general shapes of the contours, which impacted computed gradients and thus the flow rates.

As also shown in the table, the increased flow is manifested in a zone-specific manner, with the more southerly zones primarily showing the greatest increases. This is also as would be expected given that the Unit 1 and Unit 2 foundation drains capture a large portion of the more northerly flow prior to it reaching the river. As such, these drains limit the increase in groundwater elevation due to rainfall events. While the increased flow in 2008 and 2009 (as compared to the reference flow of Q2 07) may initially appear substantial, if used for the dose computation 25, it would have a more limited impact on the dose magnitude. This muted impact primary results from the highest activities being found in the Zone 1 / 2 area where the computed flows have not shown as great an increase as in the more southerly, cleaner areas (less than 15% increase over the quarters

measured to date). Given the overall small variability of flow over the seasons monitored to date, as well as the overall recognition that the computed doses to the river are a small fraction of the permitted amounts, GZA believes that recalibrating the Precipitation Mass Balance Model, as used to compute groundwater flux through the Site as part of the radionuclide dose computation, is not warranted at this time. Once sufficient seasonal data has been collected (anticipated after the Q2 2009 sampling round), the model will be recalibrated to the quarterly data set that yields the largest groundwater flow values, so as to be conservative. Once the final data are obtained (anticipated after the Q2 2009 sampling round) and the model is recalibrated, the scope of groundwater elevation data collection will then be reduced. Groundwater contours will no longer be drawn and the dose computations will be based on the recalibrated Precipitation Mass Balance Model. However, to continue to validate the applicability and appropriateness of the Precipitation Mass Balance Model, a subset of the existing set of transducers will be maintained and monitored quarterly as part of the Long Term Monitoring Program. The primary objective of maintaining these transducers is to provide ongoing confirmatory data that demonstrate substantial changes to the on-site groundwater flow

field have not taken place and thus verify that the basic assumptions inherent in the model continue to remain valid. The transducer locations selected for this monitoring are provided on

Figure 5A of this quarterly report, and the rational for the selection of these specific individual transducer locations is provided in Appendix J. 3.2 Groundwater Sampling The following sections describe the groundwater sampling results and associated QA/QC protocols.

25 The dose computations are currently all performed with the flows computed for the Q2 2007 data set. It is noted that the increase in the Q1 2009 groundwater flow in the Unit 1/2 zone, which encompasses the majority of the radionuclide migration to th e river, is only 5% higher than the reference flow. Therefore the total dose computed with this slightly higher groundwater flow would still only be a small fraction of the permitted value. Therefore, the current dose computations have again been based on the Q 2 07 data.

Section 3.0 Data Evaluation June 22, 2010 Page 3-5 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92

3.2.1 Groundwater

Sampling Results Groundwater samples collected on behalf of Entergy during Q1 2009 were analyzed for radionuclides including Tritium, Sr-90, Cs-137, Co-60, and Ni-63 at GEL Laboratories

26. Table 3 presents the Q1 2009 analytical results specific to Tritium, Sr-90, Cs-137, Co-60, and Ni-63. The rolling yearly averages, which are calculated using all the valid data from the previous year [Q2 08 through Q1-09] including mid-quarter and confirmatory samples, are also

presented in Table 3 27. Table 4 presents minimum detection concentrations (MDC), standard deviation, and I.L.s assigned to each well for the Q1-2009 analytical results. Table 5 presents historic Site groundwater analytical data. Isopleth maps of rolling averages for Tritium and Sr-90 are presented in Figures 6 and 7, respectively.

Figure 8 presents a data map of rolling averages for Cs-137, Co-60, and Ni-63. An overall evaluation of the sample handling, shipment and analytical procedures, indicate that the quality assurance quality control protocols have been met for Q1 09, and the analytical results should be useable. This conclusion is further supported by a review of the Q1 2009 analytical data, as compared to previous historical trends. Refer to Section 5.2.2 of the Final 2007 Quarterly Long-Term Groundwater Monitoring Report No. 1 for further details pursuant to quality assurance quality control protocols.

3.3 R adionuclide Release Rates The calibrated Precipitation Mass Balance Model-derived groundwater flows within each of the six flow zones are multiplied by yearly rolling average radionuclide levels within each zone (computed separately for upper and lower flow zones as well as upgradient and downgradient of the Discharge Canal) to compute groundwater radionuclide release rates to the Discharge Canal and Hudson River. Storm drain flows computed based on yearly precipitation rates are multiplied by radionuclide concentrations measured in the storm drains to compute the associated storm drain radionuclide release rates to the Discharge Canal and Hudson River

28. The selection of specific monitoring locations for each of the six zones is described in the January 25, 2008 Memorandum - Synopsis of Long Term Monitoring Plan Bases. The radionuclide release rates from the groundwater and storm drains to the Discharge Canal and

Hudson River for Q1 2009 are shown in the table below

29.

26 It should be noted that samples were analyzed for gamma emitters via gamma spectroscopy. Although only Co-60 and Cs-137 are reported, gamma spectroscopy could detect and identify other gamma emitters if they became present in groundwater. 27 An overall evaluation of the Q2 2008 sample analytical procedures employed by the laboratory for this round of samples indicated that the quality assurance quality control protocols had not been met for some samples and therefore a portion of the analytical results for Q2 2008 was not useable for calculation of the rolling averages. Therefore, only the useable data from Q2-2008 was included in the calculations for the rolling averages. 28 The storm drains also include groundwater discharges from the foundation drains for Unit 2 and Unit 3 VC Buildings. 29 These release rates include the discharge from the Unit 2 VCB footing drains, but not from the Unit 1 NCD and SFDS (which ar e otherwise accounted for).

Section 3.0 Data Evaluation June 22, 2010 Page 3-6 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 GROUNDWATER AND SURFACE WATER TO RIVER (CI/YR)

GROUNDWATER AND SURFACE WATER TO CANAL (CI/YR)

Northern Clean Zone*

4.15E-04 0.00E+0** Unit 2 North Zone 4.17E-04 2.87E-02 Unit 1/2 Zone 7.82E-03 3.22E-03 Unit 3 North Zone 3.06E-03 1.16E-03 Unit 3 South Zone 1.04E-03 4.22E-03 Southern Clean Zone*

4.21E-03 0.00E+0***

  • Activity in the Northern Clean Zone is attributable to an assumed Tritium background concentration of 150 pCi/L in the groundwater. The remaining radionuclides were assumed to not be present in this streamtube. Radionuclide release rate in the Southern Clean Zone is calculated from activity measured in monitoring wells MW-40 and MW-51. ** The radionuclide release rate to the Discharge Canal from the Northern Clean Zone is zero because the Discharge canal does not extend far enough to the north to be downgradient of the Northern Clean Zone. *** The radionuclide release rate to the Discharge Canal from the Southern Clean Zone has been computed to be zero because groundwater in this zone appears to flow under the Discharge Canal and directly to the river. This conclusion has been reached given that the surface water level in the Discharge Canal is, on average tidally, equal to the proximate groundwater elevation, both of which are above the water level elevation in the Hudson River. This approximation results in a conservatively high dose

estimation.

Release rates are then used by Entergy to calculate the radiological dose to the environment via the Discharge Canal and the Hudson River using the procedure outlined in the Liquid Radioactive Effluents (0-CY-2740) document, prepared by Entergy and dated January 12, 2007.

3.4 SSCs and Property Boundary Monitoring The Long Term Monitoring Program has been designed to also provide rapid detection of potential leaks from SSCs which exhibit a credible probability of resulting in a visually undetected release of radionuclides to the subsurface. The monitored SSCs are shown on

Figure 4 and a description of the specific monitoring installations associated with each SSC are provided in the January 25, 2008 Memorandum - Synopsis of Long Term Monitoring Plan Bases. In addition to monitoring the SSCs, on-Site and off-Site wells are used to monitor the property boundaries for unanticipated radionuclide migration across these boundaries. Again, the rationale underpinning the selection of wells designated for this purpose is provided in the above cited Memorandum. These monitoring protocols are consistent with the NEI Groundwater Protection Initiative. As discussed with the NRC during our Groundwater Protection Initiative meeting on August 12 and 13, 2008, Entergy has initiated a program of increased sampling frequency (in addition to the quarterly samples) at select wells during/following activities that could potentially result in the increased likelihood of an undetected release to the subsurface. During the Q1 2009 monitoring period, there were no activities that required increased sampling. However, mid-quarter samples were still collected to better define the residual impacts of the Unit 1 fuel removal procedure

30. In addition, and as also requested by the NRC, a cross section has also 30 As part of the process for final fuel removal from Unit 1, IPEC began increasing the water level in the pools to Elevation 55' starting on April 23, 2008, with completion on the 25th. As anticipated based on previous work, increased leakage at high wate r was observed, particularly from the transfer canal. IPEC believes that the leakage is through the concrete into the Chemical Section 3.0 Data Evaluation June 22, 2010 Page 3-7 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 been developed through the Unit 3 area to supplement Figure 4 and further demonstrate the relationship of site groundwater flow patterns and monitoring well placement relative to the individual Unit 3 SSCs (similar cross sections were previously developed for Units 1 and 2, as presented in the Hydrogeologic Site Investigation Report). This new Unit 3 cross section C-C' is included in this quarterly report as Figure 4A. As agreed with the NRC during the Deviation Memo Closeout Meeting of August 18 and 19, 2009, and as supported by the Unit 3 cross section, Entergy has agreed to add an additional multi-level monitoring installation to be located near the south west corner of the Unit 3 Transformer Yard, downgradient of MW-46. The current sampling of U1-NCD and U1-SFDS will also be continued as part of the Long Term Monitoring Program. I.L.s were established for the associated monitoring wells to set quantitative radionuclide concentrations above which further action would be undertaken. As part of the ongoing groundwater monitoring program, the reported analytical concentrations are compared against the I.L.s shown in the table below. I.L.s are currently computed each year based on yearly averages of all the valid groundwater sampling analytical results of the previous year including aliquot, confirmatory, and mid-quarter sample results 31 , 32 , 33. The I.L.s generally described on the following page and presented in Table 4 are established for comparison with 2009 analytical results based on the quarterly samples collected and analyzed in 2008.

WELL ID INVESTIGATION LEVELS (I.L.S)

TRITIUM PCI/L SR-90 PCI/L OTHER PLANT-RELATED RADIONUCLIDES Off-Site Boundary Wells (LAF-002) any detection* any detection* any detection*

On-Site Boundary Wells (MW-40, MW-51, MW-52, and MW-107) 1,000** 2** any detection*

Riverfront Boundary Wells (MW-60, MW-62, MW-63) 2,000** 2** any detection*

All Other Wells

>2x average***

>2x average***

>2x average***

  • A radionuclide is positively detected when the result is greater than or equal to the MDC and 3 times the 1 sigma uncertainty. ** The values of 1000 and 2000 pCi/L for H-3 and 2 pCi/L for Sr-90 have been chosen to be low enough to result in timely detection of a new release or change to an existing release and still be outside the normal expected range of sample results at these locations, to the extent possible with the currently available data over time. *** Any positively detected radionuclide that has a result greater than 2 times the average from the previous year. The IL is not reached until an H-3 result is greater than 1000 pCi/L or a Sr-90 result is greater than 2 pCi/L. In the event that the analytical results of a groundwater sample exceed the designated I.L., the following series of actions will be considered:

Systems Bldg 33' area given increased Sphere Valve Gallery sump pump activation on the 14' level. During fuel removal, IPEC continued to add water to maintain the pool level at 55' until October when all the fuel was removed and the pools were drained. Given the anticipated increased leakage, GZA collected Unit 1 "Mid-Quarter" groundwater samples from monitoring wells U1-CSS, MW-42-49, MW-50-66, and MW-53-120 on May 12 & 13, 2008, September 5 & 8, 2008, and November 17 & 19 2008 to evaluate the associated subsurface impact of fuel removal activities. These wells were again sampled as part of the Q1-2009 sampling round, with additional Mid-Quarter samples subsequently taken between March 16 and March 18, 2009. 31 Previously ILs were calculated based on the analytical results from the quarterly sampling rounds and excluded mid-quarter a nd confirmatory sample analytical results in the calculation. 32 If a confirmatory analytical result confirms the original analytical result is false, then only the confirmatory result is utilized in the yearly IL calculation. If a confirmatory analytical result confirms the original result is valid, then both the original and t he confirmatory result are utilized in the yearly IL calculation. 33 If an aliquot analytical result confirms the original analytical result is false, then only the aliquot result is utilized in the yearly IL calculation. If an aliquot analytical result confirms the original result is valid, then the average of the original and the aliquot result are utilized in the yearly IL calculation.

Section 3.0 Data Evaluation June 22, 2010 Page 3-8 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 Contact the laboratory to verify that all quality control checks were satisfactory, sufficient sample volume was used; required MDC's were met, etc.; Re-analyze aliquots of the original sample; Re-sample the location to verify the result; Increase the frequency of sampling for this location; Initiate an investigation utilizing Entergy's corrective action program and related resources as appropriate (e.g. site engineering / radiation protection); and Initiation of source/ground water remediation techniques commensurate with the potential dose impact analyses and good environmental stewardship.

3.4.1 Previous

Q4-2008 Investigation Level Exceedances As indicated in the Q4 2008 Quarterly Monitoring Report, a comparison of the Q4 2008 and Post Q4 08 Mid-Quarter analytical results to their respective I.L.

34 values shows that the I.L.s were initially met in four samples. One of these samples (MW-67-39) was reanalyzed, and the results were found to no longer exceed the I.L.s

35. The remaining three samples (MW-36-52, MW-42-49, and MW-54-58) are discussed individually in the sections below.

MW-36-52. The Q4 08 results at this location indicated the continuance of a developing trend of increasing Strontium levels. While the exact cause of the trend was unclear, it was inferred to be related to either: 1) a delayed response to the 2005 filling of the Unit 1 SFPs for fuel inspection; or 2) the April 2008 filling of the Unit 1 SFPs for final fuel removal, as is consistent with that further described below for MW-42-49 and MW-54-58. In any case, plausible potential causes were related to Unit 1 SFPs (the primary source of Strontium on the Site), which has had the remaining fuel and SFPs water removed. As such, the source has been terminated and it is anticipated that Strontium levels at this monitoring location will return to a downward trend with time. As anticipated, the Q1 09 results at this location did indicate a decrease in Strontium to levels consistent with 2007 levels and below the I.L. This anticipated downward trend will be continued to be monitored.

MW-42-49. Water levels in the Unit 1 SFPs were increased during late April 2008 as part of the process for final fuel removal for ISFSI storage. As anticipated based on previous work, increased leakage at high water levels was observed, particularly from the transfer canal. As such, it was expected that radionuclide levels would increase downgradient of Unit 1.

Therefore, Mid Quarter samples were taken during the approximate halfway point following the Q2, Q3, Q4 2008 and Q1 09 sampling quarters. It was anticipated that increased radionuclide levels 36 would be observed shortly after raising of pool levels (i.e., in the post-Q2 Mid Quarter samples). However, the expected increase was not observed until the post-Q3 Mid Quarter samples. These samples yielded an abrupt Strontium level increase to three times the I.L. for 34 The I.L.s included in the Q4-2008 monitoring report were based on the yearly averages from 2007. The I.L.s for the Q1-2009 sampling event were adjusted based on the yearly averages from 2008. 35 The initial positive Cobalt-60 result for sample MW-67-39 was unexpected recognizing that the previous results for this loca tion yielded non-detectable levels. The re-analysis of this sample yielded below detection limit concen trations of Cobalt-60. This is consistent with historically reported concentrations as well as that expected based on the CSM. 36 It was anticipated that Tritium levels would increase, but it was unclear if increased Strontium levels should be expected g iven Entergy's demineralization of the pools prior to raising the water levels. In fact, the previously enhanced demineralization, begun in April 2006, was resulting in a consistent decrease in Strontium levels in MW-42-49.

Section 3.0 Data Evaluation June 22, 2010 Page 3-9 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 MW-42-49 37. The Q4 08 sample results indicated a similarly abrupt decrease in Strontium levels to just below the I.L. at this location, but the post-Q4 08 sample yielded a small increase in Strontium levels that resulted in an approximately five percent exceedance of the I.L. The Q1 09 sample results indicated another increase in Strontium to levels greater than three times the I.L. with a corresponding increase in Cesium levels to greater than two times the I.L. and Nickel levels to just above the I.L. The post Q1 09 samples results also indicated increases in Cesium and Nickel levels but the Strontium levels decreased slightly compared to the Q1 09 results. It is anticipated that these increases in Cesium, Nickel and Strontium levels will decrease since the remaining fuel has been removed and the water drained from the Unit 1 SFPs. The post Q1 09 results at this location also indicated abrupt spike in Tritium levels to almost nine times the I.L. As described in more detail below, this increase in Tritium level is likely associated with leakage from the waste distillate tank valves located within the Unit 1 Fuel Storage Building (FSB). This location will be continued to be monitored to evaluate radionuclide trends.

MW-54-58. The Q4 08 results indicated the Strontium levels at this location more than doubled its I.L., the first instance in which the I.L. was exceeded at this sampling location. This abrupt increase was anticipated to be the result of the increase in water levels in the Unit 1 SFPs, showing a predicted delayed response following that seen in the upgradient well MW-42-49.

Consistent with the results at MW-54-58, all of the other sampling depths within this monitoring installation also showed a similar, but lower magnitude, response in Strontium levels during the Q4 08 sampling event. In addition, MW-53-120, the upper two sampling intervals in MW-57 and potentially MW-36-52, located within the identified Strontium plume upgradient of MW-54 and downgradient of MW-42, also all showed a marked increase in Strontium levels over the same general time interval (see Figure 7A). Since the source of these radionuclides has been terminated, it was anticipated that Strontium levels at this monitoring location would return to a downward trend with time. As anticipated, the Q1 09 results from this location indicate Strontium levels decreased to levels consistent with the past levels and below the I.L. This location will be continued to be monitored to evaluate the anticipated downward trend in

Strontium levels. MW-40 and MW-51. While there have been no Q4 08 IL exceedances at these two southern boundary locations, there appears to be a general correlation in Tritium peaks at multiple depth levels in both of these monitoring installations. Even though it is recognized that the peak Tritium levels detected are low (less that 350 pCi/L) and near the lower limit of detection, these data are being closely scrutinized on a routine basis given the sensitivity to any potential indication of migration past the southern power block boundary. The most appropriate metric to evaluate if these peaks could be due to groundwater migration of Tritium from the power block area is the relative groundwater elevations between these locations and the power block areas where Tritium contamination exists. As discussed at length in the CSM sections of the Site Investigation Report, southern boundary groundwater elevations are well above those in the power block area. As such, groundwater, and thus Tritium in the groundwater, cannot migrate from the power block to the south; in fact, groundwater is migrating in the opposite direction.

This conclusion has continued to be validated each quarter though analyses of groundwater elevation contours (see Figure 5 in the various quarterly reports). In addition, starting with this, the Q1 2009 quarterly report, an additional figure (Figure 5A) is being generated to specifically compare high importance transducer readings to historic maximum and minimum readings. The 37 As indicated, Strontium levels increased even though the SFPs were being aggressively demineralized. This result is not unexpected given that the increase in leakage rate, even at reduced Strontium levels, could result in increased groundwater Strontium levels due to additional partitioning from the solid subsurface materials back into the groundwater as well as the ad ditional leakage rate as compared to the groundwater flow rate.

Section 3.0 Data Evaluation June 22, 2010 Page 3-10 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 objective of this analysis is to demonstrate that substantial changes to the on-site groundwater flow field have not taken place and that the CSM remains valid. The MW-40 and MW-51 monitoring installations are included in this analysis. Based on these analyses, as well as the substantial body of data developed over the last 5 years of investigation which underpin our CSM, we can state with a high degree of confidence that the low level peaks in the Tritium activities observed in these two monitoring installations

are not due to groundwater migration from the power block area. However, we do not yet have a definitive explanation for the observed peaks. Further investigation into other potential mechanisms, such as atmospheric Tritium washout and seasonal laboratory bias are ongoing.

3.4.2 Q1-2009 Boundary Investigation Levels A comparison of the Q1 2009 analytical results for the On and Off-Site Boundary Wells to their respective I.L. values shows that the I.L.s were not met for any of the monitoring locations.

Therefore, there was no requirement to further investigate radionuclide activity in these wells. MW-40 and MW-51. While there have been no Q1 09 IL exceedances at these two southern boundary locations, these data continue to be closely scrutinized on a routine basis given the sensitivity associated with the southern power block boundary (see further detail provided in

Section 3.4.1). Based on these analyses, as well as the substantial body of data developed over the last 5 years of investigation which underpin our CSM, we can state with a high degree of confidence that the low level peaks in the Tritium activities observed in these two monitoring installations are not due to groundwater migration from the power block area. This conclusion has continued to be validated each quarter. However, we do not yet have a definitive explanation for the observed peaks. Further investigations into other potential mechanisms, such as atmospheric Tritium washout and seasonal laboratory bias are ongoing. As part of this effort, starting with this the Q1 2009 Quarterly Report, an additional figure (Figure 5A) is being generated to specifically compare high importance transducer readings to historic maximum and minimum readings. The objective of this analysis is to demonstrate that substantial changes to the on-site groundwater flow field have not taken place and that the CSM remains valid. The MW-40 and MW-51 monitoring installations are included in this analysis.

3.4.3 Q1-2009 SSC Investigation Levels For the SSC monitoring wells, a comparison of the Q1 2009 and Post-Q1 Mid-Quarter analytical results to their respective I.L. values shows that the I.L.s were initially met in eight samples. Two of these samples (MW-66-21 and MW-67-173) were reanalyzed, and the results were found to no longer meet I.L.s

38. The remaining six samples in which the I.L.s were met are discussed individually in the sections below. The following table summarizes the cases where the I.L.s were met and also presents the reanalyzed results.

38 The initial positive Cesium-137 results for samples MW-66-21 and MW-67-173 were unexpected recognizing that the previous results for these locations yielded non-detectable levels. As shown in the table, the re-analysis of these samples yielded below detection limit concentrations of Cesium-137. This is consistent with historically reported concentrations at these locations.

Section 3.0 Data Evaluation WELL ID RADIONUCLIDE RESULT (PCI/L)

REANALYZED RESULT (PCI/L) INVESTIGATION LEVEL (PCI/L) MW-30-84 Cs-137 8.97 NA* Any detection*** MW-32-59 H3 17,800 NA* 10,031 MW-37-40 Sr-90 3.47 NA* 2.26 MW-42-49 (Q1 09) MW-42-49 (Post Q1 09) Sr-90/Cs-137/Ni-63 H3/Sr-90/Cs-137/Ni-63 677/80,500/912 72,200/588/140,000/1,160 NA* 196/37,933/842 8,212/196/37,933/842 MW-53-82 H3/Sr-90 4,260/2.3 NA* 1,964/2 MW-62-138 Sr-90 2.46 NA* 2 MW-66-21 Cs-137 8.99 ND** Any detection*** MW-67-173 Cs-137 13.4 ND** Any detection***

  • NA indicates that the sample was not reanalyzed. ** ND indicates that the radionuclide was not detected greater than or equal to the MDC and 3 times the 1 sigma uncertainty. *** A radionuclide is positively detected when the result is greater than or equal to the MDC and 3 times the 1 sigma uncertainty.

MW-30-84. The Q1 09 results indicate Cesium was detected for the first time at this location since the LTMP was initiated (fall 2007). While the exact cause of this cesium detection is currently unclear, given the absence of Cesium in the samples analyzed during the past quarterly sampling events at this location, the absence of Cesium in the upper zone (MW-30-69) at this location during the Q1 09 sampling event, and the absence of Cesium in all the zones in proximate locations MW-31 and MW-32 during the Q1 09 sampling event, this Cesium detection is likely related to a false laboratory detection. Cesium levels at this location will be subject to added scrutiny during the upcoming quarterly monitoring round to evaluate this potential false positive Cesium detection. MW-32-59. The Q1 09 results at this location indicate Tritium was detected at the highest concentration since the initiation of the LTMP (fall 2007) exceeding the I.L. by a factor slightly under two. The remaining four deeper zones at this location (32-85,32-149, 32-173, and 32-190) did not indicate an increase of Tritium levels during the Q1 09 sampling event and have generally indicated decreasing Tritium trends. While the exact cause of this elevated Tritium detection at this location is currently unclear, it is likely related to the mobilization of stored Tritium within the shallow bedrock fractures near the Unit 2 SFP. This storage/retention mechanism was confirmed by the tracer test and described in the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008. However, it is also recognized that this Tritium increase may be related to the Unit 2 ISFSI work (see Section 3.6.4). This location will therefore be subject to added scrutiny during the upcoming quarterly monitoring rounds to evaluate potential increasing trends in Tritium levels.

MW-37-40: The Q1 09 results at this location indicate Strontium was detected slightly above the I.L. Previous Strontium levels at this location have indicated a steady downward trend; however this sampling location is located downgradient of the Unit 1 SFPs and increases in radionuclide levels were expected due to the increase in water levels in the Unit 1 SFPs during late April 2008. Since the source of these radionuclides has been terminated, it is anticipated that Strontium levels at this monitoring location will return to a downward trend with time. This location will be subject to added scrutiny during the upcoming quarterly monitoring round. June 22, 2010 Page 3-11 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 Section 3.0 Data Evaluation June 22, 2010 Page 3-12 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 MW-42-49. As discussed previously, recent quarterly and mid quarter sampling results at this location have indicated an increase in Cesium, Nickel, and Strontium levels. These radionuclide level increases are likely associated with a delayed response to the raising of the water levels in the Unit 1 SFPs and associated increased leakage. It is anticipated that the levels of these isotopes at this location will decrease since the remaining fuel has been removed and the water drained from the Unit 1 SFPs. Quarterly and post quarterly sampling will continued to be performed at this location to monitor the levels of these isotopes and the anticipated downward trend with time. To this end, and as discussed in Section 3.5 - Plume Monitored Natural Attenuation, the behavior of the Strontium increases due to defueling of Unit 1 are being specifically monitored, as summarized on a new figure developed for this, the Q1 2009 quarterly monitoring report (Figure 7A). The post Q1 09 results however also indicated a significant increase in Tritium levels at this location. Prior to the post Q1 09 results, Tritium levels at this location were generally stable with only one minor increase during the post Q3 08 sampling round. In addition, it is noted that the Tritium increase at this location came after the Strontium increase. If the Tritium increase was associated with the defueling of Unit 1, as is the Strontium increase, then it should have preceded the Strontium increase

39. Given the above, Entergy undertook additional investigations to search for another SSC leak. A February 2009 leak in the valves associated with the waste distillation tanks located to the east of the Unit 1 Fuel Storage Building (FSB) was identified. These valves are located within the FSB and thus the leak, which was visually detected and then quickly repaired, was not reported as part of the GPI program. Reporting of such leaks, even if they occur within structures, is now subject to the internal GPI reporting program. Given that these valves have been repaired, it is anticipated Tritium levels will decrease and return to stable levels at this location. Quarterly and post quarterly sampling will continued to be performed at this location to monitor Tritium levels and the anticipated downward trend with time.

MW-53-82. The Q1 09 results at this location indicate Tritium was detected greater than two times the I.L. and Strontium was detected slightly above the I.L. The lower sampling interval (MW-53-120) at this location indicated Tritium and Strontium levels were consistent with past trends and did not indicate an increase. This location is located downgradient of the Unit 1 SFPs and consistent with the results at upgradient location MW-42-49, increases in radionuclide levels are expected as related to a delayed response to the previous increase in water levels in the Unit 1 SFPs during defueling, and the observed waste distillation tank valve leakage within the Unit 1 FSB. The analytical results from the upcoming quarterly monitoring round will be utilized to assess the potential upward trend of Tritium at this location. As discussed in Section 3.5, Plume Monitored Natural Attenuation, the behavior of the Strontium increases due to defueling of Unit 1 are being specifically monitored, as summarized on a new figure developed for this, the Q1 2009 quarterly monitoring report (Figure 7A). MW-62-138. The Q1 09 results at this location indicate Strontium was detected slightly above the I.L. The analytical results from four (62-18, 62-37, 62-53, and 62-182) of the other seven sampling intervals at this location have also indicated recent slight increases (Q4 08 and Q1 09) in Strontium levels. This location is located downgradient of the Unit 1 SFPs and consistent with the results at upgradient location MW-42-49, increases in radionuclide levels are likely related to a delayed response to the increase of water levels in the Unit 1 SFPs. The analytical results 39 Unlike the other radionuclides associated with the Unit 1 SFPs, Tritium is conservative and thus does not partition out of the groundwater onto solid geologic and anthropogenic surfaces. Therefore, Tritium should more through the groundwater flow system and to monitoring wells more rapidly that Strontium and Cesium.

Section 3.0 Data Evaluation June 22, 2010 Page 3-13 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 from the upcoming quarterly monitoring round will be utilized to assess an upward trend of Strontium levels at this location. To this end, and as discussed in Section 3.5 - Plume Monitored Natural Attenuation, the behavior of the Strontium increases due to defueling of Unit 1 are being specifically monitored, as summarized on a new figure developed for this, the Q1 2009 quarterly monitoring report (Figure 7A). U1-NCD AND U1-SFDS. As agreed with the NRC during the Deviation Memo Closeout Meeting of August 18 and 19, 2009, sampling of the Unit 1 North Curtain Drain (U1-NCD) and the Unit 1 Sphere Foundation Drain Sump (U1-SFDS) will be formally included as part of the Long Term Monitoring Program. These drains have historically been assumed to collect some groundwater contaminated with Tritium from the Unit 2 SFP. This conclusion was validated by the tracer test conducted as part of the hydrogeologic site investigation (see the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008). The amount of quarterly sampling data is currently insufficient to set Tritium I.L.s for these drains. However, visual inspection of the existing data was performed and no noteworthy increases in Tritium levels were observed. In addition, given the location of these Unit 1 drains, they should also prove useful for monitoring Strontium levels associated with the Unit 1 defueling. As such, the data from these drains has also been included on Figure 7A. Three critical conclusions can be drawn from the above summarized data and analyses: 1) the current CSM for the IPEC site provides a good basis for the design of the Long Term Monitoring Program; 2) the procedures and rational used for selecting monitoring locations for leak detection have been further validated given the clear detection of the confirmed Unit 1 SFPs increased leakage during fuel removal and the detection of Tritium leakage from the waste distillation tank valves within the Unit 1 FSB; and 3) increases in radionuclide levels following a documented leak take longer to materialize in the groundwater than might otherwise be

expected.

3.4.4 Conclusions

- Boundary and SSC Leak Detection Monitoring Recognizing that measured activities in the Off-Site and On-Site Boundary Wells were below I.L. levels, this overall data set continues to demonstrate that radionuclides are migrating toward the Hudson River to the West, and are not migrating off of the property to the North, East or

South, as expected given groundwater flow directions from the property periphery toward the power block area. Given the analyses discussed above, there is also no compelling reason to believe that any new undetected leaks have developed in the SSCs monitored relative to Unit 2 or 3. With the exception of locations MW-32-59, MW-42-49, and MW-53-82, no Tritium levels met their I.L.s and the overall, continued reduction in Tritium levels in the Unit 2 plume 40 is consistent with a conclusion that the Unit 2 SFP had ceased leaking after the transfer canal "pin hole leak" was repaired in late 2007. The recent increase in Tritium levels at locations MW-42-49 and MW-53-82 are likely attributed to an observed leak in the waste distillation tank valving within the Unit 1 FSB rather than increased leakage from the SSCs associated with Unit 2 and 3. The increase of Tritium levels at location MW-32-59 is inferred, in part based on the recent tracer data, to be associated with Tritium stored in the subsurface via natural and anthropogenic retention mechanisms

41. However, given the more recent behavior observed in the Unit 2 collection box 40 It is noted that there is no Tritium plume associated with Unit 3. 41 These retentions mechanisms are discussed along with the CSM in the previously cited Hydrogeologic Site Investigation Report.

Section 3.0 Data Evaluation June 22, 2010 Page 3-14 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 data (see below), additional investigations/data evaluations will be performed to further rule out potential Unit 2 SFP leak mechanisms. Given the above, ultimate confirmation of the these conclusions will require monitoring over a number of years to demonstrate continued depletion of Tritium from the retention mechanisms and allow ranges in seasonal variation to be adequately reflected in the monitoring data. Finally, while not a groundwater monitoring issue, a crack leak collection device 42 is also routinely monitored as part of the overall ongoing Unit 2 SFP integrity analysis. The data indicate that very small amounts of water (on average <

2/100ths of a gpd) still drain from the shrinkage crack in the concrete. The volume of drainage is episodic with apparent peaks in the flow. A full explanation of the underpinning mechanism(s) has not yet been discerned, but the peaks do not clearly correlate with refueling outages. While

work is still ongoing relative to this outstanding issue, water which exits this crack is fully contained and does not enter the subsurface. Relative to the Unit 1 data, increased leakage was anticipated during final fuel removal from Unit 1 SFPs. This leakage was readily detected by the Long Term Monitoring Program. Overall, GZA believes that continued monitoring will further demonstrate decreasing long term trends in groundwater contaminant activities over time for both the Unit 1 and Unit 2 plumes given the source interdictions completed by Entergy. Since inception of the Long Term Monitoring Program, it has been observed that I.L.s have been routinely exceeded in a number of cases where subsequent data have demonstrated that no new leaks have occurred. The majority of these cases occur where the radionuclide levels are generally low and/or near their detection limits. It appears that data variability, likely due to seasonal precipitation influences, is the primary cause of these false positives, particularly pursuant to Tritium. Analysis of the false positives indicate that, for these cases, I.L.s equal to twice the previous yearly average are clearly too low. Uncorrected, this condition is likely to prove detrimental over the long term relative to the overall intent of establishing the I.L.s for leak detection. While simply increasing the I.L.s to a greater multiple of the yearly average would likely be appropriate for these cases, it would result in I.L.s that are too high for locations with higher levels of residual contamination. Therefore, the basis upon which the I.L.s are computed needs to be re-evaluated in light of the natural transient variability of the groundwater system in response to precipitation events, etc. Therefore, while re-evaluation/re-setting of I.L.s is a clear goal, it is still premature given the lack of sufficient data. This is particularly true given the recent behavior in Strontium levels due to the Unit 1 defueling (see Figure 7A). As such, the current I.Ls will remain in effect while a sufficient data base is acquired to allow better quantification of the natural (non-leak related) variability in the data.

3.5 P lume Natural Attenuation Monitoring The fourth and final objective of the Long Term Monitoring Program is to evaluate if the groundwater plumes identified on-Site demonstrate overall reductions in total activity over time, as is consistent with the requirements of MNA, the selected remediation for the IPEC Site

43. Given the likely ages of the leaks identified and characterized during the hydrogeologic investigation, it is probable that the Unit 2 (Tritium) and Unit 1 (Strontium) plumes had reached steady state conditions prior to the beginning of the quarterly monitoring. Given that: 1) the 42 Further discussion of the 2005 shrinkage crack leak in the SFP concrete wall that initiated the overall groundwater investigation, and the associated crack leak collection device installed to contain any residual leakage, can be found in the Hydrogeologic Site Investigation Report. 43 The selection of MNA as the remediation for the Site is more fully discussed in the Hydrogeologic Site Investigation Report.

Section 3.0 Data Evaluation June 22, 2010 Page 3-15 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 identified leaks in the Unit 2 SFP have all been previously repaired (the last leak repaired in 2007), and: 2) the water in the Unit 1 West Pool underwent intensified demineralization (beginning in April 2006 with a reduction in Strontium levels of over 95 percent), one might expect that the plumes should have started to markedly attenuate with time. Both plumes have in fact generally shown significant levels of attenuation, when they are viewed in their entirety and past release events and expected seasonal variability in the sampling data are accounted for. However, the attenuation has not been rapid during time frames immediately subsequent to the source interdictions implemented by Entergy, as was previously predicted. In the case of the Unit 2 Tritium plume, levels have dropped markedly from the highest levels measured during the two-year hydrogeologic investigation. However, the rate of Tritium decrease with time has decreased. This is as predicted due to natural geologic and anthropogenic retention mechanisms which have trapped and stored Tritium released during historic Unit 2 SFP leaks, and are now slowly releasing this Tritium to the groundwater flow regime after the physical leaks have been repaired. This conclusion is consistent with the original CSM presented in the Hydrogeologic Site Investigation Report, as further supported by the recent tracer data (see Section 3.6

). Relative to the Unit 1 Strontium plume, Strontium levels should drop much more slowly than Tritium levels. This is because, in addition to the retention mechanisms discussed above for Tritium, Strontium also undergoes partitioning whereby this radionuclide is adsorbed from the groundwater onto solid surfaces (both geologic and anthropogenic). When the input of Strontium to the groundwater is reduced (such as via fuel pool demineralization) the solid surfaces desorb Strontium back into the groundwater, thus maintaining Strontium levels.

Strontium partitioning is therefore expected to substantially slow plume attenuation. Despite partitioning effects, some plume attenuation was observed in response to pool demineralization

prior to defueling, particularly proximate to the pool (see Figure 7A, U1-NCD, U1-SFDS, MW-42, U1-CSS). However, defueling of Unit 1 resulted in a temporarily increase in the leakage rate of West Pool water into the formation. This was expected based on previous work on the Unit 1 SFPs, but was unavoidable given the requirement to raise the pool level for fuel rod removal. The increased leakage rate has resulted in a substantial increase in Strontium levels in the immediate vicinity of the fuel pool (U1-NCD, U1-SFDS, MW-42, U1-CSS) as well as initial indications of increases in the Strontium plume levels downgradient of the pool (MW-53, MW-55 MW-54, MW-57, MW see figure 7A)44. With time, it is expected that the levels proximate to the pool will decrease and levels downgradient of the pool will increase as this additional strontium contaminated water flushes through the groundwater flow system. It is expected that this flushing mechanism will be protracted given the aforementioned impact of partitioning on Strontium levels in the groundwater. However, over time it is expected that downgradient Strontium plume levels will resume an overall downward trend once this perturbation is finished passing through the system.

3.6 Unit 2 Spent Fuel Pool Integrity Analysis As discussed above in the context of Long Term Monitoring Program Investigation Levels, as well as in previous Quarterly Reports, the groundwater data collected to date support the conclusion that there is no compelling reason to believe that any new leaks have developed in 44 As of late 2008, all the fuel rods have been removed from the Unit 1 SFPs and the pool water has been drained. As such, the Unit 1 SFPs is no longer an active source of radionuclides to the subsurface.

Section 3.0 Data Evaluation June 22, 2010 Page 3-16 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 the Units 1, 2 and 3 SSCs

45. However, as discussed in the Final Investigation Report 46 , the Unit 2 Spent Fuel Pool (IP2-SFP) has had documented historic leaks, which have all been either repaired and/or contained. Given that the IP2-SFP does not have an integral leak detection system, as does the IP2-SFP, this SFP has undergone additional scrutiny relative to its integrity. While the data does not demonstrate that there are any ongoing leaks in the IP2-SFP, this conclusion has been reached in the preceding quarterly reports based on visual inspection of the relatively limited data sets for the monitoring wells downgradient of the IP2-SFP. Although the total number of data points at each sampling location still remains limited, GZA has performed a more quantitative evaluation of the data pursuant to IP2-SFP integrity for this, the Q1 2009 report
47. As discussed below, this analysis has included the following lines of evidence: Anal ysis of the trend in individual Tritium levels for each monitoring well located downgradient of the SFP; Analysis of the trend in individual Tritium levels for monitoring wells MW-31 and MW-32; wells which are located upgradient of the SFP but which exhibited high flourescein concentrations during the tracer test 48; Analysis of the trend in total activity in the Tritium plume located downgradient of the SFP over time; Analysis of the mass balance between total Tritium released via the known leaks, the capacity for long term storage of Tritium within subsurface retention mechanisms and the rate of Tritium removal via groundwater flow directly and indirectly to the Hudson

River; and Analysis of the leak collection box 49 data. 3.6.1 Individual Downgradient Monitoring Well Tritium Analyses A Mann-Kendall analysis, as referenced in USEPA Guidance for Data Quality Assessment - Practical Methods for Data Analysis, 50 was performed on the Tritium levels measured at monitoring locations associated with the IP2-SFP and downgradient Unit 2 Tritium plume. This 45 As noted above, additional leakage from IP1-SFPs was observed as anticipated when the pool water levels were raised to allow final removal of the remaining fuel rods. This additional leakage was expected given that previous work on these pools had detected existing leaks in the upper portions of the pool walls which are typically above the pool water level. As such, the i ncreased leakage does not constitute a new leak, but rather an expected, short term condition required to effect final rod removal. The IP1-SFPs now contain no rods and the pool water has been drained. Therefore, continued leakage from these pools is no longer possible. 46 Hydrogeologic Site Investigation Report, January 7, 2008, prepared by GZA GeoEnvironmental, Inc, on behalf of Enercon Services, Inc., for Entergy Nuclear Northeast, Indian Point Energy Center, 450 Broadway, Buchanan, NY 10511. 47 It is noted that while the majority of the data used in this analysis are current through the Q1 2009 sampling event in January/February 2009, some subsequently collected data has also been incorporated in some cases. 48 As discussed in the Final Investigation Report, groundwater above the water table flows in the down-slope direction of the bedrock fractures. In the vicinity of the IP2-SFP, this unsaturated zone water flows to the east and south, rather than to the west as does the groundwater below the water table. This unsaturated groundwater flow direction was demonstrated during the tracer testing with the highest flourescein concentrations detected in the upper portions of MW-31 and MW-32 immediately after tracer injection, and is consistent with the bedrock fracture geology (see the Final Investigation Report for further discussion). 49 This stainless steel box was sealed to the concrete SFP wall, covering the shrinkage crack that was discovered weeping water during the dry cask crane foundation excavation in 2005. This box has been containing and collecting small amounts of water since that time. 50 USEPA Guidance for Data Quality Assessment - Practical Methods for Data Analysis, EPA QA/G9, QA00 UDATE; EPA/600/R-96/084, July, 2000 Section 3.0 Data Evaluation June 22, 2010 Page 3-17 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 statistical technique was chosen because it is particularly well suited for data sets with a limited number of points. Each of the vertical monitoring intervals at each monitoring installation location was analyzed separately. In general, only data collected after final completion of the multi-level installation 51 was used. However, there were a number of exceptions to this generalization where open borehole and/or borehole packer testing data were also used. These data were incorporated where possible given the importance of early time data (proximate to when documented leaks were still active). As a case in point, MW-30 provides a good example of where initial open borehole data and individual multi-level data can be compared with a high degree of confidence that the data are representative of the same location and depth within the bedrock formation. This particular borehole encountered two general flow producing zones: 1) the upper zone, at the top of the saturated portion of the borehole, and 2) the lower portion of the borehole. Both packer testing and heat trace borehole flow meter testing showed that the upper zone was far more productive than the lower zone. In addition, once the borehole was completed as a multi-level installation, it was clear from the pressure transducer data that there was a strong vertically downward piezometric head gradient in the borehole. Therefore, prior to multi-level completion, the groundwater entered the upper portion of the borehole, as driven by the higher head in these fractures, and flowed downward to exit through the fractures at the bottom portion of the borehole given their lower head

52. As such, the open borehole existed in a condition where it was entirely full of groundwater from the bedrock fractures at the upper portion of the borehole.

Therefore, when the open borehole was sampled, the water obtained would be nearly entirely groundwater from the upper fractures, independent of the depth from which the sample was

taken 53. Given that the multi-level sampling data showed that the upper portion of the groundwater contained the higher Tritium levels, as expected for a SFP leak from above, the open borehole sample would yield, if anything, Tritium levels which are somewhat too low relative to an upper multi-level sample. Therefore, the high Tritium levels observed in the early-time open borehole samples from MW-30 (up to 601,000 pCi/L) can be added to the data set subsequently obtained from the upper multi-level completion in MW-30

54. A similar analysis was used relative to the open borehole data from MW-31 and MW-32. Graphs showing the variation in Tritium concentration over time, including results from open borehole, test packer 51 Each borehole was completed as a multi-level installation. These multi-level completions were designed to segregate the borehole length into individual sampling zones with depth. The sampling zones were generally established to coincide with the more productive zones of the fractured bedrock and overburden (both natural soils and backfill). These sampling zones were the n isolated from each other with various types of seals placed in the open borehole. The objective of the seals is to prevent ver tical flow through the borehole and thus establish the same conditions in the formation which existed prior to the drilling of the borehole.

As such, the Tritium data is considered depth-discrete. It is noted that the multi-le vel installations at some monitoring locations were removed and replaced with upgraded systems, such as for the monitoring installation at MW-32.

52 While the bedrock borehole is open (prior to multi-level completion), the water level in the open hole is at an elevation corresponding to the weighted average of the pieziometric heads in the individual fractures intersected by the hole. The weighted average borehole head is based on the product of the head and the hydraulic conductivity for the individual fractures. Therefore, groundwater in fractures with heads greater than this average flows out of the fractures into the borehole; conversely, water i n the borehole flows into fractures which have individual heads less than the average. Therefore, in the case of MW-30 where the hea ds in the upper fractures are greater than those deeper in the hole, groundwater flows from the fractures into the upper portion of the borehole, then flows down the hole and exits through the lower fractures. 53 As groundwater is extracted from the open borehole, the entire saturated length of the borehole experiences the same reduced groundwater level due to the pumping, independent of where the pump is located. The degree of reduction in the water level depends on how fast the water is pumped from the borehole. As such, groundwater runs into the borehole to replace the water being removed. However, the groundwater only enters the borehole from fractures which are at heads greater than the head in th e borehole while it is being pumped. In addition, the rate of groundwater entering the borehole from each fracture is also dependent on the hydraulic conductivity of the individual fractures as well as the magnitude of the head in the fracture relative to that in the borehole during pumping. The greater hydraulic conductivity and higher piezometric heads in the upper fractures of MW-30 resul ts in the sampled groundwater coming almost entirely from these fractures independent of the location of the pump in the borehole. 54 As a corollary, the open borehole data for this location cannot be used to provide early time data for the lower portion of the borehole.

Section 3.0 Data Evaluation June 22, 2010 Page 3-18 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 and post multi-level completion ("Waterloo samples") are presented as Figures G-1 , G-2 and G-3 in Appendix G, for MW-30, 31 and 32, respectively. Additional graphs are also presented in the appendix for the other monitoring locations downgradient of the Unit 2 SFP (see Figures G-4 through G-14 for MW-33 through 37, 42 55, 49, 50, 53 55 55 and 111)

56. These wells only include post-multi-level completion data given the limited time frame between borehole drilling and completion of the installation. The Mann-Kendall analyses for the individual monitoring points are summarized on Table G-1 in Appendix G. The table includes the results of the analysis for each depth interval ("well") at each of the multi-level monitoring locations enumerated above. The table is color coded, with green shading designating wells showing a decreasing trend, yellow for no trend, and red for an increasing trend. Of the 33 intervals included on the table, two-thirds (22) show a decreasing trend. This group of wells also includes those located within the core of the plume with the highest Tritium concentrations (MW-30-69, 33 and 111, with current yearly average Tritium concentrations > 50,000 pCi/L). These high concentrations wells better represent overall plume behavior because they encompass a great percentage of the Tritium activity in the plume. Of the 10 wells shaded in yellow (exhibiting no trend), only 5 provide valid representations (as shaded) of Unit 2 plume behavior: Three (MW-42-49, MW-42-78 and MW-53-82) are located downgradient of the Unit 1 SFPs, rather than the Unit 2 SFP, and are therefore are not yet expected to show a decreasing trend due to Unit 1 defueling 55 Therefore, these wells should not be used to infer conclusions relative to plume trends for Unit 2. Inspection of the graph for MW-36-24 (Figure G-7) shows a rapid and large decrease in Tritium concentrations at early times in this overburden (discharge canal backfill) well (from > 30,000 pCi/L to <3,000 pCi/L). This large decrease is followed by a number of small perturbations around a relatively flat trend.

While it is visually clear that this well has shown a major decrease in Tritium levels since containment of the 2005 shrinkage crack leak, the Mann-Kendall analysis only evaluates number of increases relative to decreases and does not weight the analysis relative to the magnitude of the change. As such, visual inspection demonstrates that this location actually exhibits an overall decreasing trend. Inspection of the graph for MW-34 (Figure G-5) shows a distinctly increasing trend at early times, followed by a distinctly decreasing trend thereafter. Given the time frames and the downgradient location of this bedrock well, it is likely that the increasing trend delineates arrival of the leading edge of the plume generated by the 2005 shrinkage crack leak. The decreasing trend would then reflect dissipation of this plume after containment of this leak (this hypothesis is supported by similar trends in MW-33 and MW-35. As such, the MW-34 location actually exhibits a decreasing trend relative to plume behavior after containment of the 2005 shrinkage crack leak.

55 MW-42 and MW-53 are located downgradient of the Unit 1 SFPs, rather than the Unit 2 SFP. However, these two wells were included in the analyses, as requested by NRC, due to the apparent contribution of Unit 2 SFP Tritium to the Unit 1 groundwater flow regime via vadose zone transport (see Figure 6). It is noted that any decreasing Tritium trend in this area due to the termination of leaks from the Unit 2 SFP could be masked by increased leakage of Tritiated water from the Unit 1 SFPs up throug h the completion of defueling in November 2008. 56 Monitoring locations MW-66 and MW-67, also located downgradient of the Unit 2 SFP, could not be included in the analyses because the data sets for these two wells do not yet include the required minimum number of data points (ten) for the Mann-Kendall analysis method.

Section 3.0 Data Evaluation June 22, 2010 Page 3-19 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 It is noted that the five remaining "no trend" wells are all associated with the two monitoring locations MW-31 and MW-32. These two locations are actually not located downgradient of the Unit 2 SFP from a saturated groundwater flow standpoint. Rather, they are generally located up- and cross-gradient. The final well, MW-31-85, is also part of this group. This is the only well for which the Mann-Kendall analysis indicates an increasing trend. The increasing trend in this well, as well as the behavior of the other wells in MW-31 and MW-32 are discussed in the following section. Based on the evaluation summarized above, the Mann-Kendall analyses of the individual depth intervals within the groundwater monitoring installations located downgradient of the Unit 2 SFP overwhelmingly support a conclusion that the Tritium plume has exhibited an overall decreasing trend with time since monitoring began.

3.6.2 Individual

Upgradient Monitoring Well Tritium and Tracer Analyses (MW-31 and MW-32) As discussed in the preceding section, individual wells clearly exhibiting no trend or an increasing trend are confined to monitoring locations MW-31 and MW-32. These two monitoring installations are located up- and cross-gradient from the Unit 2 SFP. While not downgradient of the SFP from a groundwater flow perspective, Tritium leakage from the SFP can still migrate to these locations via vadose zone transport above the water table along dipping bedrock fractures. During the site investigation work, a tracer test was performed which clearly demonstrated that water released proximate to the SFP foundations (adjacent to MW-30) does migrate to the east and south past MW-31 and MW-32 prior to entering the water table, and then flows with the groundwater through these wells and then to the river to the west. This vadose zone migration mechanism is discussed more fully in the Hydrogeologic Site Investigation Report. In addition to the general persistence of Tritium throughout the Unit 2 plume 57 and the absents of a clear downward trend in Tritium concentrations with time at these two specific monitoring installations, the upper-most interval in both MW-31 and MW-32 have shown an abrupt increase in Tritium over the last two quarters (Q1 and Q2 58 09). These data can be explained by either: 1) an ongoing small episodic (< 5L/day) leak in the IP2- SFP; 2) a "retention mechanism" in the saturated and unsaturated zones under the IP2-SFP that can retain substantial volumes of highly Tritiated water (e.g., historic SFP leakage) for substantial amounts of time 59; and/or 3) a combination of the above

60. While Tritium concentrations in the groundwater plume could be impacted by both an ongoing leak and the retention mechanisms cited above, tracer concentrations in the groundwater cannot be replenished by SFP leakage. Therefore, a 57 The Unit 2 Tritium plume has decreased in concentration relative to the samples taken just after identification of the 2005 shrinkage crack leak (the earliest samples taken from directly below the SFP yielded Tritium concentrations over 600,000 pCi/L, while more recent maximum concentrations have been below one-half of those initial concentrations), and continues to show a general trend of decreasing concentrations over time. However, the plume still exhibits concentrations greater than we can exp lain if there were no further Tritium inputs to the groundwater; i.e., the plume would attenuate more quickly than observed based on
1) Tritium's lack of partitioning to solid materials in the subsurface; 2) the crystalline nature and low storativity of the bedro ck; and 3) the computed and observed groundwater transport rate. 58 While this document is the Q1 09 report, some post-Q1 sampling data became available prior to report finalization. As such, data germane to the discussion of Unit 2 SFP integrity was included herewith. 59 This hypothesized "retention mechanism" is supported by our understanding of the construction methods used for the IP2-SFP and adjacent structures, evaluations of contaminant concentration variability trends over short timeframes and precipitation ev ents, as well as the original tracer test results, as further described in Sections 7.0 and 8.0 of the Hydrologic Site Investigation Report. 60 It is also recognized that the potential exists for a fourth potential source of Tritium; that is any other leak or spill ab ove the upgradient portions of the Unit 2 Tritium plume.

Section 3.0 Data Evaluation June 22, 2010 Page 3-20 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 targeted round of tracer test samples was taken with the Q3 08 61 groundwater samples to help explain the generally increasing Tritium concentrations measured in MW-31-85, The results of this tracer testing was provided in the Q3 monitoring report (this information is summarized in a June 14, 2010 memo 62 provided in Appendix H). Overall, the primary finding of this evaluation was that tracer was still present proximate to, and downgradient of, the Unit 2 SFP. In addition, while the concentrations were reduced in magnitude, they generally matched the relative trends exhibited previously (pursuant to variation between proximate locations and over depth at individual locations), and the general plume shape remained approximately the same, with additional elongation towards the river. Given that approximately one and a half years had elapse from the initial tracer injection to the acquisition of these samples, we calculate that in the absence of groundwater storage (retention) mechanisms, the tracer should have been flushed from the groundwater flow system by that time. These data therefore provided additional support for the originally hypothesized retention mechanisms. Subsequently, additional tracer samples were collected in light of the above cited more recent Tritium peaks in MW-31 and MW-32. These data are summarized on Table H-1 in Appendix H. As can be seen from this more recent data, tracer concentrations still persist in the groundwater, nearly 2.5 years after tracer injection. These tracer data, including the Q3 08 data cited above, were plotted with time along with the corresponding Tritium data on Figure H-1

63. The recent peaks in Tritium concentrations in the most shallow levels of the wells cited above (MW-31-49 and MW-32-59) are clearly evident on Figure H-1. The figure also shows that tracer was not detected in MW-31-49 during the Tritium peak. While this could be viewed as inconsistent with the retention mechanism CSM, it is noted that this well samples a particularly large fracture in the uppermost portions of the bedrock
64. As such, particularly high groundwater flow volumes through this well may have provided sufficient dilution to drive the most recent tracer concentrations below detection limit. In addition, it is further noted that Tritium has been released from the Unit 2 SFP from three separate known locations 65 , while the tracer was released in only one location; potentially also explaining the Tritium peak with a lack of a tracer peak in this specific well. Conversely (and thus consistent with the retention mechanism CSM), while similar fracture conditions exist in MW-32-59, a tracer peak was observed, but only after a number of months had elapsed after the Tritium Peak. Therefore, a more delayed tracer peak may still arrive at MW-31-49. Notwithstanding this single potentially conflicting data point, it is equally important to note that a number of the other wells in this group have previously fallen below detection limits for tracer, and then subsequently rebounded back to detectable levels (e.g., MW-31-63, MW-31-85, MW-32-85 and MW-32-149). These data provide strong evidence that the hypothesized retention mechanism is operable, at least to some degree, because no new tracer has been released to the subsurface. Therefore, the rebound in tracer concentrations from non-detect, clearly supports introduction of additional tracer into the groundwater flow regime from a retained source in the vadose zone. In addition, the trend in the tracer concentrations for these four wells loosely follows the corresponding Tritium trend, most notably for wells MW-31-63, MW-31-85, MW-32-59 and MW-32-85.

61 IPEC Quarterly Long-Term Groundwater Monitoring Report, Quarters Two and Three, Report No. 3, February 6, 2009. 62 An initial version of this memo was included in the Quarters Two and Three 2008 Monitoring Report, February 6, 2009. 63 Figure H-1 includes Tritium data going back to early 2007, while the tracer data included only goes back to August 2008. Earlier tracer data was not included because graphing the associated higher concentrations would have required a scale that would mask the trends in the lower concentration, more recent data. The additional, earlier tracer data is included in the 2008 Hydrogeologic Site Investigation Report. 64 See the hydraulic conductivity values on Figure H-1, as well as the geophysical logs in Appendix C of the 2008 Hydrogeologic Site Investigation Report.

65 Tritium was released between 1990 and 1992 on the east side of the SFP, in 2005 from the shrinkage crack on the south side o f the pool and up until July 2007 from the pinhole leak on the north side of the pool. Tritium was only release one time in February 2006.next to the shrinkage crack leak (south side of pool).

Section 3.0 Data Evaluation June 22, 2010 Page 3-21 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 Overall, the more recent tracer analyses are consistent with the previous tracer data, and the associated CSM presented in the Final Report. As such, the current demonstration that the tracer persists in the groundwater flow regime over even much longer time frames now provides even stronger support for the existence of "retention mechanisms," as posited by the existing CSM for the IPEC site. In fact, a direct analog for "contaminant storage in dead-end bedrock fractures" is provided by the high tracer concentrations found above the upper packer in the vadose zone in RW-1 (see Memo in Appendix H). Therefore, given that Tritiated water behaves much as the tracer does, it should be expected that once highly Tritiated water has been released from the SFP, it becomes "trapped" (held in storage) and is slowly released to the groundwater flow regime over substantial per iods of time. These retention mechanisms therefore act as a continuing source to the groundwater and thus can explain the observed slow rate of Tritium concentration reduction in the Unit 2 plume. In addition, it would be expected that Tritium release from the retention mechanisms would be episodic, for example as associated with periods of increased infiltration from precipitation. Such episodic releases would be expected to result in the peaks in Tritium concentrations observed. As requested by the NRC, we have also included the precipitation records for the timeframe graphed on Figure H1 in an effort to correlate the Tritium/tracer peaks to rainfall events. Inspection of the precipitation plot between Dec-08 and Sep-09 shows a relative lack of rain during the beginning of this period and relatively more intense rainfall during the end of the period (starting about April/May-09). This trend generally appears to correspond to the low and high points of the Tracer/Tritium peaks. However, it is not at all clear that a similar correlation extends back in time before the Dec-08 time frame. Moreover, while it is widely recognized that chemical concentrations on sites contaminated with separate phase product are impacted by infiltration rates/groundwater elevation changes, it is rare to find a robust correlation. This is due to the spatial and temporal complexity of the mechanisms involved. Therefore, a high level of credibility in this observed short term tracer correlation is not warranted. However, despite all appropriate caveats on these limited data, the correlation does still appear to exist, at least to some limited extent. In addition, this interpretation is further supported by the general acceptance that variations in rainfall infiltration/groundwater elevations impact the rate and amount of vadose zone source contamination entering the groundwater flow regime. These data thus provide further support for the retention mechanism CSM posited herein. Therefore, the "peakiness" of the Tritium data over time, as well as the overall persistence of the Unit 2 Tritium plume do not, in and of themselves, demonstrate that the Unit 2 SFP must still be leaking. In fact, the currently observed behavior was predicted in the Final Investigation Report based on the then available data and the retention mechanism postulated within the overall CSM. 3.6.3 Tritium Plume Total Activity Analysis As discussed above, the individual well trend data, when viewed collectively, support a conclusion that the Tritium plume concentrations have been decreasing with time since monitoring began. Another method to analyze plume behavior is to compute the total Tritium activity in the plume at multiple snapshots over time. This procedure 66 was implemented for each quarterly Long Term Monitoring sampling round from Q2 2007 to Q1 2009. In addition, the 66 The individual sampling point Tritium concentrations were multiplied by the groundwater volumes in representative zones (discretized over area and depth), as computed using soil and bedrock effective porosities developed from the pumping and trace r tests (see the Hydrogeologic Site Investigation Report for further information).

Section 3.0 Data Evaluation June 22, 2010 Page 3-22 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 bounding Tritium concentrations from Figure 8.1 of the Hydrogeologc Site Investigation Report 67 have also been included as a starting point for the graph. These data are summarized as a histogram on Figure G-15 in Appendix G. As can be seen from the figure, the total Tritium activity in the plume downgradient of the Unit 2 SFP has shown a distinctly decreasing trend over time. The total Tritium activity in the plume has decreased 38 percent since Q2 2007, and has decreased by 88 percent when compared to the bounding level Tritium concentrations.

This general "first order" plume decay is what would be expected for a plume undergoing Monitored Natural Attenuation after source termination. These data indicate that the leaks in the Unit 2 SFP have been terminated and that Tritium levels will decrease, but at a decreasing rate, over time. However, the later time data on the Figure G-15 histogram can also be viewed as having reached a horizontal asymptote. This asymptote reflects a steady Tritium activity in the plume at a value of approximately 0.011 to 0.018 Ci

68. Dose computations, summarized in Appendix F, show that the computed groundwater discharge of Unit 2 Tritium conservatively amounts to approximately 0.1 Ci/yr.

69 For the plume to continue to retain the same Tritium activity over time, 0.1 Ci/yr of Tritium has to be continually supplied to the plume to replace that being lost through discharge from the groundwater. One possibility is that an unidentified leak still remains in the Unit 2 SFP. With Tritium at approximately 30,000,000 pCi/L in the SFP, a leak rate directly from the pool of only approximately 10 L/day 70 would be sufficient to provide the required Tritium input to the groundwater. While a constant plume Tritium activity unquestionably requires a Tritium input to the groundwater flow regime to balance the level of Tritium discharge, this fact does not demonstrate the existence of a leak in the SFP. As previously discussed, migration of stored Tritium from the vadose zone (retention mechanism) down into the groundwater flow regime could also supply the required Tritium input. For this mechanism to be plausible: 1. The amount of Tritium released from the known historic leaks must be large enough to continue to feed the plume after the leaks have been terminated;

2. The half-life decay of Tritium must be accounted for in computing the Tritium activity currently remaining from the terminated leaks;
3. There must be enough capacity in the retention mechanism (overburden pores and bedrock fractures) to store the Tritiated water; and
4. The amount of Tritium currently in storage must be relatively large compared to the yearly required release rate. As discussed in more detail in the following subsections, these four required criteria appear to be met. It appears that more than sufficient Tritium has been released and can be stored to support a stable plume consistent with that currently observed. Moreover, the retention 67 Hydrogeologic Site Investigation Report, January 7, 2008, prepared by GZA GeoEnvironmental, Inc, on behalf of Enercon Services, Inc., for Entergy Nuclear Northeast, Indian Point Energy Center, 450 Broadway, Buchanan, NY 10511. 68 See note on Figure G-15 regarding variability in Tritium activity estimate based on value adopted for bedrock effective porosity. 69 This discharge rate includes groundwater discharge to the Discharge Canal, the Hudson River, the Unit 2 VCB footing drain, t he Unit 1 NCD and SFDS (with the contribution of the Unit 1 SFPs leak added back in). 70 Given that the Unit 1 SFPs has recently been closed and drained, the approximately 0.05 Ci/yr historic addition of Tritium t o the groundwater from this source has been terminated. It has been assumed that this loss of Tritium input to the plume will be bal anced by a future reduction in the Tritium levels extracted by the NCD and SFDS, and therefore, the Unit 2 Tritium plume should remai n stable.

Section 3.0 Data Evaluation June 22, 2010 Page 3-23 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 mechanism should be able to continue to support steady state plume behavior for at least five to ten years.

Tritium Release Magnitude - There have been three documented leaks from the Unit 2 SFP. These leaks are briefly described below, with further detail provided in the Geohydrological Site Investigation Report. In each case, a value of 30,000,000 pCi/L was used for the initial Tritium activity of the pool water, which was then decreased based on half-life decay and the duration of the leak. The leak first discovered was the 1990 to 1992 crack leak on the east wall of the pool. The leak apparently started on October 1, 1990 with damage to the liner, and was

repaired on June 9, 1992, shortly after it was discovered. The leak rate was estimated to be as much as 50 gpd, with a total release of 35,000 gal. Assuming a SFP Tritium activity level of 30,000,000 pCi/L, the activity released was approximately 4.2 Ci. This translates into a current residual activity of approximately 1.6 Ci once half-life decay is accounted for. The second leak identified was the 2005 shrinkage crack leak. Initially, the leak rate averaged as high as 1.5 l/day (peak of about 2 l/day), with much lower leak rates thereafter. This leakage from the crack was contained once it was discovered which has eliminated any further release to the environment. However, the crack likely opened up prior discovery. During this time, it is estimated that up to 0.06Ci of Tritium was released. This value was computed based on the volume of water estimated to have been released from the interstitial space between the liner and the concrete SFP walls.

Given the relative recent occurrence of this leak, no half-life decay was applied to this

value. The third leak identified was the weld imperfection ("pinhole") in the north wall of the transfer canal. The weld dates back to the construction of the pool liner and it is therefore likely that the leak existed from at least 1980 until it was terminated in July 2007. The leak was characterized as a "1/8 inch pinhole". Such a hole in a 1/4 inch thick liner at a depth of 25 feet could leak at a rate of up to 2000 gpd. While the actual leak rate is not known, a value of 2000 gpd is clearly an overestimate because the required refilling rate would likely have been detected and investigated. For benchmarking purposes, a 1/32 inch diameter hole could leak up to 140 gpd, a value that would not necessarily be detectable during routine operation given that typical evaporations rates are estimated to be on the order of 200 gpd. Even reducing the leak to 50 gpd, a rate which is consistent with that estimated for the 1990 to 1992 leak, results in a release of approximately 28 Ci, after accounting for half-life decay. To be conservative in our analysis, this value was further reduced by an order of magnitude to 5 gpd, resulting in a residual Tritium activity of 2.8 Ci. Based on the above three documented leaks, approximately 4.5 Ci of Tritium (after half-life decay) has been computed to have been released into the formation

71.

71 It is recognized that if the amount of leakage exceeds the storage volume, then the excess leakage would be released directly to the groundwater, and therefore could not be counted as a potential stored source. However, the computed storage volume, as described in the next subsection, far exceeds the adopted leakage volume. It is also recognized that some Tritium activity wou ld have been released from storage (due to precipitation infiltration, etc.) during the period of ongoing leakage. While this volume would contribute to the historic plume, it would no longer be available as a source for future plume generation. Given that groundwater sampling data is not available prior to 2005, the rate of this historic Tritium release from storage cannot be determined. However, any reasonably likely degree of overestimation of the computed current storage volume should be accounted for within t he Section 3.0 Data Evaluation June 22, 2010 Page 3-24 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 Tritium Storage capacity - As discussed in more detail in the Geohydrologic Site Investigation Report, Tritiated water released from the Unit 2 SFP must migrate through the vadose zone prior to entering the saturated groundwater flow regime. During migration to the groundwater table, the Tritiated water encounters a number of features, both naturally occurring (such as dead end fractures in the bedrock) and anthropogenic (such as backfill above concrete foundations and/or fractures created during construction blasting) where the water can become trapped and stored. Additional water, such as from infiltration of precipitation, entering these features over time can displace some of the Tritiated water causing it to resume its migration to the water table. Once this stored water enters the groundwater flow regime, it acts as a continuing source which "feeds" and maintains the plume

72. For the retention mechanism SCM to be realistic, sufficient capacity must exist to store substantial amounts of Tritiated water for long time periods. To evaluate the sufficiency of the available capacity, the total volume of the probable storage was computed using the following

data: Natural bedrock fractures in the unsaturated zone were computed to result in a bedrock porosity of 0.3%; of which 10% (0.03% porosity) were assumed to be dead ended and could provide storage capacity; Construction blasting was assumed to increase the natural fracturing of the bedrock proximate to foundations by a factor of 3, with 2/3s of these fractures being dead ended resulting in a storage porosity of 0.06%; A six inch soil backfill thickness with a porosity of 20% was assumed to be saturated above foundation working mats. The above porosities were applied only to areas which could intercept Unit 2 SFP leakage prior to it reaching the water table. As such, zones utilized in the computation included: Bedrock only between elevation 51 (bottom of Unit 2 SFP) and the water table elevation; Bedrock only in areas above the upper portion of the plume which appear to be potential source areas; Backfill above structure mud mats only in areas east of VCB and above plume; and Soil in the immediate vicinity of MW-111. As such, potential storage volume not considered, so as to be conservative, include: Any bedrock fractures or soil porosity within the saturated zone; Any capillary retention in vadose zone soils; Any mud mat not above the plume; Any mud mat west of the VCB; Anything above elevation 51'; and Anything downgradient of MW-111 uncertainty associated with the conservative final reduction in the assumed leak rate of the weld imperfection (i.e., from 50 gpd to 5 gpd). 72 In addition to storage in the vadose zone, storage can also occur in dead end fractures, etc in the saturated zone.

Section 3.0 Data Evaluation June 22, 2010 Page 3-25 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 The above outlined computations resulted in an estimated storage capacity of 38Ci. Tritium Storage Relative to Release Rate - As discussed above, the Tritium in storage must be large relative to the release rate needed to maintain the plume. Otherwise, the yearly reduction in the stored activity would quickly begin to deplete the storage, which would then be reflected in a decreasing release rate, and thus an attenuating total plume activity (i.e., not constant as potentially indicated by the histogram). The total estimated Tritium activity in storage has been computed to be at least 4.5 Ci. This is the lower of the values estimated for Tritium released (4.5 Ci) and storage capacity (38 Ci). This value is 45 times larger than the estimated Tritium release rate required to maintain the Unit 2 Tritium plume in its current state. As such, it appears that there is more than sufficient Tritium in storage to maintain the existing plume for at least ten years. That is, after ten years of 0.1 Ci/yr storage depletion, 35 times the annual depletion would still remain. Therefore, one would not expect to see a substantial decrease in rate of release from storage over that period of time, and thus the plume activity should remain stable.

3.6.4 Collection

Box Data As discussed more fully in the Hydrogeologic Site investigation report, once the 2005 shrinkage crack leak was found, leakage from the crack was thereafter contained and collected, and no longer could/can enter the subsurface environment. The containment currently consists of a stainless steel box ("Collection Box") which was sealed to the concrete wall over the crack area in February 2006

73. This box is drained to a collection vessel where the volume is measured and routine samples are taken for analysis. As shown on Figure I-1, the leak rate has been episodic with typical prolonged rates of < 20mL/day, separated by relatively shorter periods of higher leak rates (>200 mL/day). The periods of higher leak rate generally appeared to occur during the spring, at least initially. It is important to view this leak rate in the context of the total leak volume, which has only been approximately 100 liters (about 25 gallons) over the four years since the leak was discovered, or a little over two fluid ounces per day. Once the high leak rate just after initial crack discovery subsided, the rate has averaged only a little over one fluid once per day. It is also important to note that there have been no detections of short lived radionuclides in the leakage water after the 2005 discovery of the leakage
74. In addition, while the Tritium activity increases with increased leak rate 75 , the levels are well below the activity in the pool
76. Therefore this water is not coming directly from the fuel pool, but rather, has been stored between the stainless steel liner and the concrete SFP wall. As discussed above, SFP water clearly entered this interstitial space during the 1990 to 1992 leak, as well as from the weld imperfection in the Transfer Canal liner (terminated in July 2007). A number of hypotheses have been developed over time to explain the continuing leakage, both with respect to generation of the water as well as its variable Tritium activity. However, no single hypothesis provides a completely compelling explanation encompassing all the data. The individual conceptual models include:

73 Between the crack discovery in 2005 and installation of the permanent leak collection box in February 2006, temporary containment and collection systems were used. 74 During the earliest sampling events, Cesium 134 was initially detected. The Cesium 134 to Cesium 137 ratio implied an age f or the water of 5 to 9 years. However, it is not clear that this sample wasn't contaminated with material from the wall surface, which could have been associated with historic cask wash pit leakage down along the wall. This joint between the cask wash pit floor and SFP wall has since been reconstructed and sealed. 75 It is also noted that Boron concentrations and gamma activity also increase with increased leakage rates. 76 While the Tritium levels in the pool are generally about 30,000,000 pCi/L, the maximum level in the leak water after the 200 5 discovery has been 15,000,000 pCi/L with levels typically around 10,000,000.

Section 3.0 Data Evaluation June 22, 2010 Page 3-26 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 Initially, it was hypothesized that the higher leak rate periods occurred during refueling events, which also occur in the spring. Potentially, refueling could have caused the liner to flex, thus "squeezing" the interstitial space and expelling stored water out of the crack.

However, refueling only occurs every other year, so the peak in 2007 would not be coincident with a refueling event. It also has been hypothesized that the spring melt and rainfall events could be responsible for the increased leak rate. This would require a mechanism 77 to allow infiltrating precipitation to flow through an upper elevation crack(s) in the concrete SFP wall (located at a higher elevation than the "2005 crack" at elevation 61') and pool in the interstitial space between the stainless steel liner and the wall. This water 78 could replenish the volume in the interstitial space, migrate to, and then flow out of the 2005 crack into the collection box. The spring peaks in the collection box also appeared to at least loosely correlate with episodic Tritium peaks in MW-31 and MW-32 (see Figure G-2 and G-3), both hypothesized to be driven by variable infiltration events. More recent data, however, has shown that the leak rate peak in the spring of 2008 was subsequently followed by multiple peaks over the entire year. The increased number of peaks in 2008 was then followed by the 2009 which contained no peaks through late summer, even though we had a very wet late spring/early summer. The most recent collection box data from September 2009 has once again exhibited peaks in the leak rate. The two peaks observed appear to correlate with insertion of the HI-TRAC into the pool. The mechanism leading to the increased leakage is currently not understood but could be related to operations associated with dry cask storage. Current hypotheses Indicate the increased leakage could be related to: 1) the weight of the equipment outside the pool on the floor slab next to the SFP wall - the slab is structurally integrated with the wall so slab flexure could also flex the wall and liner; 2) the weight of the HI-TRAC on the liner floor within the pool; and/or 3) the potential increased water levels in the pool during HI-TRAC submergence. A number of dry cask tests were also performed in 2008, which could therefore be related to the relatively high number of

lower level peaks that year. Given the currently available data, a definitive explanation for the episodic leakage rate into the collection box has not yet been determined. Additional data is currently being collected to provide further insight into potential operable mechanisms. Independent of the mechanism(s) 77 During the spring melt, it is likely that greater than average amounts of infiltrating water migrates over and through the vadose zone bedrock. However, this water should generally not be able to reach the Unit 2 SFP wall because the wall is separated from the bedrock by a "blast rock" backfill. The generally high hydraulic conductivity of this material allows rapid downward flow to the bottom of the backfill before the infiltrating water can reach the wall. As such, this infiltrating water should not enter cracks in the upper portion of the SFP wall. However, it is likely that during construction, the backfilling process took substantial time to comp lete. Rainstorms occurring during this period could easily have washed surface erosion materials (mud) into the partially backfilled excavation. This "mud" would form a low hydraulic conductivity layer on top of the backfill, between the bedrock and the wall, which would then be filled over with more blast rock backfill. In addition, layers of less conductive fill may have also been used as part of the backfilling process. If one of these low conductivity layers was positioned just below a crack in the wall, infiltrating water could pond on top of the layer and then flow into the crack. While this hypothesized conceptual model requires a number of coinciden t conditions, and could therefore be judged improbable, it is noted that this condition appears to exist at the MOB. In this cas e, infiltrating water is routinely observed to leak through the wall causing wet conditions in the building, even though the floor slab is well above the water table. 78 It was recognized that the infiltrating water would carry no Tritium activity and would have to mix with the water already in the interstitial space to gain the activity needed to match that of the leakage. This infiltration of clean water should not result in significant dilution of the stored water given the relatively small amount of total leakage to date as compared to the estimate d volume of the interstitial space.

Section 3.0 Data Evaluation June 22, 2010 Page 3-27 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 responsible, once water enters the collection box, this "leakage" is collected and properly disposed of and thus cannot enter the subsurface environment

79. 3.6.5 Minimum Detectable Leak Rate To date, much investigative work has been completed on the Unit 2 SFP liner and a robust long

term groundwater monitoring system has been installed. While there is no compelling data demonstrating that an undetected leak remains in the Unit 2 SFP, it is also clear that there can never be sufficient data to guarantee that this SFP is completely leak free - i.e., that no leak of any size still exists. Quantification of the maximum probable size of a leak that could remain undetected by the long term monitoring system wa s therefore undertaken. The objective of this work is to provide a conservative quantitative value which can be compared to permitted levels of Tritium discharge to the river through the Discharge Canal. This comparison can then provide insight into the potential dose significance of a potential undetected leak to the

groundwater regime. The amount of Tritium activity flowing in the groundwater plume to the river has been computed to be approximately 0.1 Ci/yr. For pool water at 30,000,000 pCi/L, this equates to leak rate of approximately 10 L/day, or about 2.5 gallons per day (gpd). Therefore, it would be expected that a new leak at a rate of 2.5 gpd would double the Tritium levels in the plume over time. A doubling of the Tritium levels should be detectable once most of the wells exhibit this trend.

Therefore, the increasing trend in Tritium levels from a 2.5 gpd new leak may take an extended time to become evident. Another metric that can provide potential insight into the minimum potential leak rate is the tracer study previously conducted at the IPEC site. Based on a computation accounting for tracer and Tritium source concentrations, as compared to their respective detection limits, it appears that a Tritium leak of on the order of 5 gallons should be detectable at MW-32 (the monitoring installation with the greatest response during the tracer test). Other monitoring installations proximate to the Unit 2 SFP would therefore be expected to require higher leak rates based on the tracer test. In addition, it is also noted that the tracer injection was all introduced into the formation over a very short period of time. Therefore, a higher leak volume would likely be required if it occurred over a longer period of time. Finally, conclusions based on the tracer testing are all contingent on the location of the single tracer injection relative to the monitoring well locations. Leaks in other SFP locations would be expected to behave differently. Given the above data and analyses, and also accounting for the substantial level of uncertainty involved, we believe that a new leak of SFP water of a magnitude between 10 to 30 gpd should be detectable with the current Long Term Monitoring Program within a relatively few monitoring quarters.

3.6.6 Conclusions

- Unit 2 SFP integrity Overall, the preponderance of the data demonstrate that the Tritium activity in the plume has decreased substantially since groundwater monitoring began. However, it is also apparent that the rate of decrease is slower than would be expected if no additional Tritium was being 79 While this leakage cannot enter the environment, it is possible that other unidentified cracks exist in the SFP concrete wal l which could release similarly generated water into the subsurface formation.

Section 3.0 Data Evaluation June 22, 2010 Page 3-28 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 released into the groundwater flow regime. The original CSM, as outlined in the Hydrogeologic Site Investigation Report, includes a "retention mechanism" that stores Tritiated water from historic liner leaks in the vadose zone, and then gradually and episodically releases some of this Tritium to the groundwater over time. The currently available data and analyses summarized herein, particularly including the most recent tracer data, provide further confirmation of the existence of this mechanism. This retention mechanism is expected to be capable of continuing to support the existing plume activity for at least five to ten years into the future, without any additional contribution of Tritium from a continuing or new leak in the Unit 2 fuel pool.

Therefore, the existing Tritium plume behavior does not provide a compelling argument that there is a continuing leak in the Unit 2 SFP. Given this conclusion and the recognition that Entergy has terminated all identified leaks in the Unit 2 SFP, the Unit 2 Tritium plume satisfies the requirements for Monitored Natural Attenuation (MNA). However, it is also recognized that there could still be a small continuing leak in the SFP that is also providing Tritium to the plume in addition to that released from the retention mechanism. The most recent data from the leak collection box indicates that pool water may be migrating around/through the liner and recharging the interstitial space between the liner and the SFP concrete wall. While any water that is released through the 2005 shrinkage crack in the wall is captured, contained and disposed of, and thus can not impact the groundwater, there may be other additional cracks in the wall which are not contained. If such additional cracks exist, it would not be unlikely that interstitial water could escape and eventually enter the groundwater regime (after also recharging the retention mechanism). While a continuing leak from the Unit 2 SFP cannot be ruled out, if such a leak(s) exists, it is small. Based on the analyses summarized above, we believe that the maximum leak rate from the Unit 2 SFP that could potentially remain undetected by the groundwater monitoring system is less than 10 to 30 gpd. It is also likely that if a small leak exists in the liner, it should not get worse with time, as based on liner evaluations previously conducted by Entergy

80. It is further emphasized that while a leak of 10 to 30 gpd should be large enough to be readily detectable with the existing Long Term Monitoring Program, this amount of Tritium release to the river is still small compared to permitted levels of Tritium discharge to the river through the Discharge

Canal.

80 As part of the overall Unit 2 SFP liner integrity evaluation, Entergy undertook testing of a number of welds relative to the potential for ongoing corrosion, such as due to Microbial-Influenced Corrosion (MIC). It was concluded that there was no evidence of ongo ing corrosion.

FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

June 22, 2010 Page 4-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92

4.0 CONCLUSION

S AND PLANNED ACTIVITIES Evaluation of data collected during Q1 2009 has shown the following: While I.L.s have been met at a number of locations, there is no evidence of new leaks from the Systems, Structures, or Components monitored, with the exception of the anticipated additional leakage from the Unit 1 SFPs and the recently observed leakage from the waste distillation tank valves within the Unit 1 FSB. Based on past work, additional leakage was expected during the raising of water levels in the Unit 1 SFPs for final fuel removal to ISFSI storage. The leakage from the Unit 1 SFPs was initially detected as pronounced increases in Strontium and Cesium in the monitoring locations closest to Unit 1. The recent leakage from the waste distillation tank valves was independently 81 identified based on an increase in Tritium levels in monitoring installations proximate to the tanks. As such, these data support the validity of the current CSM for use as a basis for Long Term Monitoring Program design. Based on the Q1 2009 data, as well as that collected during previous quarters, it currently appears that the Tritium I.L.s originally established are somewhat too sensitive relative to natural seasonal/precipitation-driven transient variations in radionuclide activities, as well as the variability inherent in the laboratory analyses. Relative to Strontium from the Unit 1 SFPs, the increases in activity in a number of monitoring points, due to the recent defueling activities, limit our ability to establish Strontium baseline levels for assessment of new I.L.s pursuant to the Monitored Natural Attenuation (MNA) of this plume. It is anticipated that this additional Strontium activity will take a number of quarters to flush through the groundwater flow system and attenuate to reasonably stable levels. .As such, the existing I.L.s will continue to be used until sufficient data is collected to allow re-evaluation of I.L. levels for the radionuclides of interest. The new data for Q1 2009 continue to show that the computed overall groundwater flow through the Site is greater than that previously computed for the 2007 reference data set. While the 2008 yearly rainfall was higher than that for 2007, it was only slightly higher. It appears that high frequency/intensity rainfall just prior to the 2008 and 2009 quarterly measurements may explain, at least in part, the higher computed flows. In addition, the process of drawing groundwater elevation contours evolved over time after 2007 as new information pursuant to the influence of plant structures on the groundwater flow field became available. This evolving process resulted in some changes to the general shapes of the contours, which impacted computed gradients and thus the flow rates. However, given the overall small variability of flow over the seasons monitored to date, as well as the recognition that the computed doses to the river are a small fraction of the permitted amounts, GZA believes that recalibrating the Precipitation Mass Balance Model, as used to compute groundwater flux through the Site as part of the radionuclide dose computation, is not warranted at this time. Once sufficient seasonal data has been collected (anticipated after the Q2 2009 sampling round), the model will be recalibrated to the quarterly data set that yields the largest groundwater flow values, so as to be conservative.

81 The valve leakage was initially identified during visual inspection rounds and quickly repaired. However, given that the leak was within the Unit 1 FSB structure, it was not documented in the GPI program. This valve leak and repair subsequently came to light within the GPI program during investigations into the cause of the abrupt increase in Tritium leve ls in MW-42. Reporting of such leaks has now been included in the GPI program operations.

Section 4.0 Conclusions and Planned Activities June 22, 2010 Page 4-2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 Additional, more quantitative analyses have been completed to further investigate the integrity of the Unit 2 SFP. These analyses provide further support for the original conclusion that the Unit 2 SFP is no longer leaking. This conclusion, along with the observed decreases in Tritium levels within the plume, satisfy the requirements for Monitored Natural Attenuation (MNA). However, these analyses cannot definitively rule out the possibility of a remaining small leak. While it is not possible to quantify the size the minimum detectable leak with any degree of certainty, we believe that the maximum leak rate from the Unit 2 SFP that could potentially remain undetected by the groundwater monitoring system is less than 10 to 30 gpd. Given the currently available data, a definitive explanation for the episodic leakage rate into the Unit 2 SFP collection box has not yet been determined. Additional data is therefore currently being collected to provide further insight into potential operable mechanisms. This ongoing work is currently focused on HI-TRAC operations associated with dry cask storage. It is not yet possible to conclude that no leaks of any size remain in the Unit 2 SFP. However, if a small leak does exist, it is unlikely to get worse with time, as based on liner evaluations previously conducted by Entergy

82. It is further emphasized that while a leak of 10 to 30 gpd should be large enough to be readily detectable with the existing Long Term Monitoring Program, this amount of Tritium release to the river is still a small fraction of that which is currently permitted for release to the river through the Discharge Canal. The overall Sr-90 activity within the Unit 1 plume had generally been stable or decreasing in response to the West Pool demineralization activities conducted by Entergy beginning in 2006. However, the final defueling of the Unit 1 SFPs has resulted in a substantial increase in Strontium levels proximate to the SFPs, as well as initial indications of increases in the Strontium plume levels downgradient. This is as was predicted given the requirement to temporarily raise the pool levels for rod removal, thus increasing leakage rate from the SFPs
83. With time, it is expected that the levels proximate to the pool will decrease and levels downgradient of the pool will increase as this additional strontium contaminated water flushes through the groundwater flow system. It is expected that this flushing mechanism will be protracted given the aforementioned impact of partitioning on Strontium levels in the groundwater. However, over time it is expected that downgradient Strontium plume levels will also resume an overall downward trend once this perturbation is finished passing through the system. Based on the results and evaluation of the Q1 2009 groundwater monitoring within the context of the Long Term Monitoring Program, IPEC plans to continue routine groundwater sampling and related maintenance. This work will be conducted in accordance with the IPEC Radiological Groundwater Monitoring Program IP-SMM-CY-110, and will incorporate the enhancements suggested by the NRC as described herein.

82 As part of the overall Unit 2 SFP liner integrity evaluation, Entergy undertook testing of a number of welds relative to the potential for ongoing corrosion, such as due to Microbial-Influenced Corrosion (MIC). It was concluded that there was no evidence of ongo ing corrosion. 83 As of late 2008, all the fuel rods have been removed from the Unit 1 SFPs and the pool water has been drained. As such, the Unit 1 SFPs is no longer an active source of radionuclides to the subsurface.

FINAL QUARTERLY LONG-TERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

TABLES Table 1 Groundwater Sampling Methods, Equipment, Frequency, and Depths Table 2 2009 1st Quarter Low Tide Groundwater Elevations Table 3 2009 1st Groundwater Analytical Results and Averages Table 4 2009 1st Quarter Groundwater Analytical Results Table 5 Historic Groundwater Analytical Results TABLE 1 GROUNDWATER SAMPLING METHODS, EQUIPMENT, FREQUENCY AND DEPTHSINDIAN POINT ENGERGY CENTER BUCHANAN, NYTopBottomTopBottomFeet Below TOC Elevation in Feet mslMW-30-69Waterloo Low FlowWaterloo Multilevel SystemQuarterly67.371.38.44.469.36.4MW-30-84Waterloo Low FlowWaterloo Multilevel SystemQuarterly77.385.4-1.6-9.583.8-8.1MW-31-49Waterloo Low FlowWaterloo Multilevel SystemQuarterly34.849.340.826.348.826.8 MW-31-63Waterloo Low FlowWaterloo Multilevel SystemQuarterly55.363.820.311.863.312.3 MW-31-85Waterloo Low FlowWaterloo Multilevel SystemQuarterly69.885.45.8-9.684.8-9.2 MW-32-59Waterloo Low FlowWaterloo Multilevel SystemQuarterly28.361.348.815.858.818.3 MW-32-85Waterloo Low FlowWaterloo Multilevel SystemQuarterly79.392.8-2.2-15.785.385.3 MW-32-131Waterloo Low FlowWaterloo Multilevel SystemInactive125.8138.3-48.7-61.2130.8-53.7 MW-32-149Waterloo Low FlowWaterloo Multilevel SystemQuarterly125.8156.8-70.2-79.7149.3-72.2 MW-32-173Waterloo Low FlowWaterloo Multilevel SystemQuarterly165.8174.3-88.7-97.2172.8-95.7 MW-32-190Waterloo Low FlowWaterloo Multilevel SystemQuarterly180.3193.9-103.2-116.8190.3-113.7 MW-33Low FlowPeristaltic PumpAnnually8.030.010.6-11.7162.8 MW-34LowFlowPeristalticPumpInactive 5.0 30.0 13.5-11.5 16.5 2.0SAMPLING DEPTH 4 Sampling Method Well ID 1 Sampling Equipment UsedSAMPLING INTERVAL 3Ft Below Top of Casing Elevation in Feet mslProjected 2009 Sampling Frequency 2 MW-34Low FlowPeristaltic PumpInactive 5.0 30.0 13.5-11.5 16.5 2.0MW-35Low FlowPeristaltic PumpAnnually6.530.012.1-11.415.03.6 MW-36-24 5Low FlowPeristaltic PumpQuarterly11.024.00.8-12.217.0-5.2MW-36-41Low FlowPeristaltic PumpInactive36.041.0-24.2-29.237.0-25.2MW-36-52Low FlowPeristaltic PumpQuarterly48.053.0-36.2-41.250.0-38.2 MW-37-22Low FlowPeristaltic PumpQuarterly12.022.03.0-7.017.0-2.0 MW-37-32Low FlowPeristaltic PumpQuarterly28.032.5-13.0-17.529.0-14.0 MW-37-40Low FlowPeristaltic PumpQuarterly38.540.5-23.5-24.539.0-24.0 MW-37-57Low FlowPeristaltic PumpQuarterly52.057.0-37.0-42.055.0-40.0 MW-38Low FlowPeristaltic PumpInactive5.040.09.3-25.725.4-11.1 MW-39-67Waterloo Low FlowWaterloo Multilevel SystemBi-Annually65.070.515.09.567.013.0 MW-39-84Waterloo Low FlowWaterloo Multilevel SystemBi-Annually76.585.03.5-5.083.5-3.5 MW-39-102Waterloo Low FlowWaterloo Multilevel SystemBi-Annually93.0103.0-13.0-23.0101.5-21.5 MW-39-124Waterloo Low FlowWaterloo Multilevel SystemBi-Annually115.0126.5-35.0-46.5124.0-44.0 MW-39-183Waterloo Low FlowWaterloo Multilevel SystemBi-Annually169.5186.0-89.5-106.0182.5-102.5 MW-39-195Waterloo Low FlowWaterloo Multilevel SystemBi-Annually193.0198.6-113.0-118.4195.0-115.0 MW-40-27Waterloo Low FlowWaterloo Multilevel SystemQuarterly18.235.255.038.026.746.5 MW-40-46WaterlooLowFlowWaterlooMultilevelSystemQuarterly442537290195462270 MW-40-46Waterloo Low FlowWaterloo Multilevel SystemQuarterly 44.2 53.7 29.0 19.5 46.2 27.0MW-40-81Waterloo Low FlowWaterloo Multilevel SystemQuarterly64.784.28.5-11.080.7-7.5 MW-40-100Waterloo Low FlowWaterloo Multilevel SystemQuarterly93.2106.7-20.0-33.5100.2-27.0 MW-40-127Waterloo Low FlowWaterloo Multilevel SystemQuarterly125.2136.7-52.0-63.5127.2-54.0 MW-40-162Waterloo Low FlowWaterloo Multilevel SystemQuarterly158.7190.3-85.5-116.9161.7-88.5 MW-41-40Low FlowPeristaltic PumpBi-Annually22.042.032.912.936.018.9 MW-41-63Modified Well Vol. PurgeWaterra Pump Bi-Annually59.064.0-4.1-9.161.0-6.1 MW-42-49Modified Well Vol. PurgeSubmersible PumpQuarterly31.051.038.718.741.028.7 MW-42-78Modified Well Vol. PurgeWaterra Pump Quarterly69.079.00.7-9.374.0-4.3 MW-43-28Low FlowSubmersible PumpBi-Annually8.028.040.820.723.025.8 MW-43-62Low FlowSubmersible PumpBi-Annually42.062.06.8-13.254.0-5.2 MW-44-66Modified Well Vol. PurgeSubmersible PumpQuarterly52.067.041.526.563.030.5 MW-44-102Modified Well Vol. PurgeWaterra Pump Quarterly79.0104.014.5-10.580.013.5 MW-45-42Modified Well Vol. PurgePeristaltic PumpQuarterly27.542.526.211.237.016.6 MW-45-61Modified Well Vol. PurgePeristaltic PumpQuarterly51.561.52.2-7.858.0-4.4 MW-46Modified Well Vol. PurgeSubmersible PumpQuarterly6.030.012.1-11.910.57.6 MW-47-56Low FlowSubmersible PumpInactive36.056.034.314.352.018.3 MW-47-80ModifiedWellVol.PurgeWaterraPumpInactive 70.0 80.0 0.3-9.7 72.0-1.7 MW-47-80Modified Well Vol. PurgeWaterra Pump Inactive 70.0 80.0 0.3-9.7 72.0-1.7J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table1 - Q1.09.Methods, Frequency, Depths.xls; Methods, Frequency, DepthsPage 1 of 3See Page 3 for Notes TABLE 1 GROUNDWATER SAMPLING METHODS, EQUIPMENT, FREQUENCY AND DEPTHSINDIAN POINT ENGERGY CENTER BUCHANAN, NYTopBottomTopBottomFeet Below TOC Elevation in Feet mslSAMPLING DEPTH 4 Sampling Method Well ID 1 Sampling Equipment UsedSAMPLING INTERVAL 3Ft Below Top of Casing Elevation in Feet mslProjected 2009 Sampling Frequency 2MW-48-23Low FlowPeristaltic PumpInactive8.023.07.4-7.615.8-0.4MW-48-37Low FlowPeristaltic PumpInactive33.038.0-17.622.635.8-20.4MW-49-26Low FlowPeristaltic PumpQuarterly15.025.0-0.3-10.420.0-5.3 MW-49-42Low FlowPeristaltic PumpQuarterly32.042.0-17.4-27.437.0-22.3 MW-49-65Low FlowPeristaltic PumpQuarterly60.065.0-45.4-50.461.0-46.4 MW-50-42Low FlowPeristaltic PumpQuarterly22.042.0-7.1-27.127.0-12.1 MW-50-66Low FlowPeristaltic PumpQuarterly62.067.0-47.1-52.160.0-45.1 MW-51-40Waterloo Low FlowWaterloo Multilevel SystemQuarterly29.744.238.023.539.728.0 MW-51-79Waterloo Low FlowWaterloo Multilevel SystemQuarterly63.281.24.5-13.578.7-11.0 MW-51-104Waterloo Low FlowWaterloo Multilevel SystemQuarterly101.2111.2-33.5-43.5103.7-36.0 MW-51-135Waterloo Low FlowWaterloo Multilevel SystemQuarterly130.2143.7-62.5-76.0135.2-67.5 MW-51-163Waterloo Low FlowWaterloo Multilevel SystemQuarterly154.7166.2-87.0-98.5162.7-95.0 MW-51-189WaterlooLowFlowWaterlooMultilevelSystemQuarterly18421978-1165-12991892-1215 MW-51-189Waterloo Low FlowWaterloo Multilevel SystemQuarterly 184.2 197.8-116.5-129.9 189.2-121.5MW-52-11Modified Well Vol. PurgePeristaltic PumpAnnually2.012.014.84.810.06.8 MW-52-18Waterloo Low FlowWaterloo Multilevel SystemAnnually10.030.04.9-15.117.5-2.6 MW-52-48Waterloo Low FlowWaterloo Multilevel SystemAnnually48.056.0-33.1-41.148.0-33.1 MW-52-64Waterloo Low FlowWaterloo Multilevel SystemAnnually59.071.5-44.1-56.664.0-49.1 MW-52-122Waterloo Low FlowWaterloo Multilevel SystemAnnually110.5123.5-95.6-108.6122.0-107.1 MW-52-162Waterloo Low FlowWaterloo Multilevel SystemAnnually154.5164.0-139.6-149.1161.5-146.6 MW-52-181Waterloo Low FlowWaterloo Multilevel SystemAnnually171.0198.1-156.1-183.0181.0-166.1 MW-53-82Low FlowSubmersible PumpQuarterly62.082.08.3-11.775.0-4.7 MW-53-120Modified Well Vol. PurgeWaterra Pump Quarterly100.0120.0-29.7-49.7105.0-34.7 MW-54-37Waterloo Low FlowWaterloo Multilevel SystemQuarterly29.042.0-15.9-28.936.5-23.4 MW-54-58Waterloo Low FlowWaterloo Multilevel SystemQuarterly51.564.0-38.4-50.957.5-44.4 MW-54-123Waterloo Low FlowWaterloo Multilevel SystemQuarterly116.0126.0-102.9-112.9123.0-109.9 MW-54-144Waterloo Low FlowWaterloo Multilevel SystemQuarterly135.0155.5-121.9-142.4144.0-130.9 MW-54-173Waterloo Low FlowWaterloo Multilevel SystemQuarterly170.5182.0-157.4-168.9172.5-159.4 MW-54-190Waterloo Low FlowWaterloo Multilevel SystemQuarterly185.0203.6-171.9-190.3190.0-176.9 MW-55-24Low FlowPeristaltic PumpQuarterly14.024.04.3-5.816.02.3

M W-55-35 L ow Fl ow P e ri sta l t i c P u m p Qua r te rl y 30.0 35.0-11.8-1 6.8 3 2.0-1 3.8 MW-55-35Low FlowPeristaltic PumpQuarterly 30.0 35.0-11.8-16.8 32.0-13.8MW-55-54Low FlowPeristaltic PumpQuarterly44.054.0-25.8-35.847.0-28.8 MW-56-53Modified Well Vol. PurgeSubmersible PumpBi-Annually49.254.221.016.052.018.3 MW-56-83Modified Well Vol. PurgeWaterra Pump Bi-Annually69.984.90.4-14.674.0-3.7 MW-57-11Modified Well Vol. PurgePeristaltic PumpBi-Annually6.011.09.04.010.05.0 MW-57-20Modified Well Vol. PurgePeristaltic PumpBi-Annually15.520.5-0.5-5.519.0-4.0 MW-57-45Modified Well Vol. PurgePeristaltic PumpBi-Annually30.545.5-15.5-30.540.0-25.0 MW-58-26Low FlowPeristaltic PumpBi-Annually16.026.0-1.4-11.420.0-5.4 MW-58-65Low FlowPeristaltic PumpQuarterly50.065.0-35.4-50.454.0-39.4 MW-59-32Low FlowPeristaltic PumpInactive21.031.0-6.5-16.527.0-12.5 MW-59-45Low FlowPeristaltic PumpInactive35.045.0-20.5-30.542.0-27.5 MW-59-68Low FlowPeristaltic PumpInactive53.068.0-38.5-53.558.0-43.5 MW-60-35Waterloo Low FlowWaterloo Multilevel SystemQuarterly24.939.4-12.4-26.934.9-22.4 MW-60-53Waterloo Low FlowWaterloo Multilevel SystemQuarterly45.459.4-32.9-46.953.4-40.9 MW-60-72Waterloo Low FlowWaterloo Multilevel SystemQuarterly66.478.9-53.9-66.472.4-59.9 MW-60-135Waterloo Low FlowWaterloo Multilevel SystemQuarterly124.9141.4-112.4-128.9134.9-122.4 MW-60-154Waterloo Low FlowWaterloo Multilevel SystemQuarterly147.4164.9-134.9-152.4154.4-141.9MW-60-176Waterloo Low FlowWaterloo Multilevel S y ste m Quarterl y170.9200.4-158.4-187.8175.9-163.4MW60176Waterloo Low FlowWaterloo Multilevel SystemQuarterly 70.9 00.58.87.8 175.9 163.4J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table1 - Q1.09.Methods, Frequency, Depths.xls; Methods, Frequency, DepthsPage 2 of 3See Page 3 for Notes TABLE 1 GROUNDWATER SAMPLING METHODS, EQUIPMENT, FREQUENCY AND DEPTHSINDIAN POINT ENGERGY CENTER BUCHANAN, NYTopBottomTopBottomFeet Below TOC Elevation in Feet mslSAMPLING DEPTH 4 Sampling Method Well ID 1 Sampling Equipment UsedSAMPLING INTERVAL 3Ft Below Top of Casing Elevation in Feet mslProjected 2009 Sampling Frequency 2MW-62-18Low FlowPeristaltic PumpQuarterly4.714.710.00.013.51.2MW-62-37Low FlowPeristaltic PumpQuarterly33.338.3-18.6-23.634.5-19.8MW-62-53Waterloo Low FlowWaterloo Multilevel SystemQuarterly49.654.1-36.8-41.353.1-40.3 MW-62-71Waterloo Low FlowWaterloo Multilevel SystemQuarterly61.182.6-48.3-69.871.1-58.3 MW-62-92Waterloo Low FlowWaterloo Multilevel SystemQuarterly88.699.1-75.8-86.391.6-78.8 MW-62-138Waterloo Low FlowWaterloo Multilevel SystemQuarterly126.1143.6-113.3-130.8138.1-125.3 MW-62-182Waterloo Low FlowWaterloo Multilevel SystemQuarterly177.6198.7-164.8-185.7182.1-169.3 MW-63-18Low FlowPeristaltic PumpQuarterly8.018.0-3.8-13.814.90.7 MW-63-34Low FlowPeristaltic PumpQuarterly30.035.0-15.8-20.831.5-17.3 MW-63-50Waterloo Low FlowWaterloo Multilevel SystemQuarterly41.558.0-29.2-45.749.5-37.2 MW-63-93Waterloo Low FlowWaterloo Multilevel SystemQuarterly81.5100.5-69.2-88.293.0-80.7 MW-63-112Waterloo Low FlowWaterloo Multilevel SystemQuarterly106.5112.0-94.2-99.7111.5-99.2 MW-63-121WaterlooLowFlowWaterlooMultilevelSystemQuarterly11801275-1057-11521210-1087 MW-63-121Waterloo Low FlowWaterloo Multilevel SystemQuarterly 118.0 127.5-105.7-115.2 121.0-108.7MW-63-163Waterloo Low FlowWaterloo Multilevel SystemQuarterly150.5165.0-138.2-152.7162.5-150.2 MW-63-174Waterloo Low FlowWaterloo Multilevel SystemQuarterly168.0191.1-155.7-178.6174.0-161.7 MW-66-21Modified Well Vol. PurgePeristaltic PumpQuarterly7.027.06.0-7.014.10 MW-66-36Modified Well Vol. PurgePeristaltic PumpQuarterly31.036.0-17.0-22.033.6-19.5 MW-67-39Waterloo Low FlowWaterloo Multilevel SystemQuarterly28.854.3-15.8-41.338.3-25.8 MW-67-105Waterloo Low FlowWaterloo Multilevel SystemQuarterly90.3110.8-77.3-97.8104.8-92.3 MW-67-173Waterloo Low FlowWaterloo Multilevel SystemQuarterly164.8188.3-151.8-175.3172.3-159.8 MW-67-219Waterloo Low FlowWaterloo Multilevel SystemQuarterly209.3229.8-196.3-216.8218.8-206.3 MW-67-276Waterloo Low FlowWaterloo Multilevel SystemQuarterly250.8281.3-237.8-268.3275.3-262.8 MW-67-323Waterloo Low FlowWaterloo Multilevel SystemQuarterly317.8328.3-304.8-315.3322.3-309.8 MW-67-340Waterloo Low FlowWaterloo Multilevel SystemQuarterly335.3347.9-322.3-334.9339.8-327.3 MW-107Low FlowSubmersible PumpAnnually105.1126.134.913.932.7110.1 MW-111Low FlowPeristaltic PumpBi-Annually11.617.47.01.516.52.4 U3-4DModified Well Vol. PurgePeristaltic PumpQuarterly25.027.6-10.2-12.825.6-10.8 U3-T1Low FlowPeristaltic PumpQuarterly0.21.23.12.15.72.8 U3-T2Low FlowPeristaltic PumpQuarterly0.61.62.71.75.72.6 U 1-CSS L ow Fl ow P e ri sta l t i c P u m p Bi-Ann ua ll y N A1 0.2 N A4.9 14.0 6.1 U1-CSSLow FlowPeristaltic Pump Bi-Annually NA 10.2 NA 4.9 14.0 6.1LAF-002Low FlowNABi-AnnuallyNANANANANA-22.3 U1-NCDGrabNAQuarterlyNANANANANANA U1-SFDSGrabNAQuarterlyNANANANANANA MH-5 6GrabNAInactiveNANANANANANA B-1 6GrabNAInactiveNANANANANANA B-6 6GrabNAInactiveNANANANANANANotes:1. For nested multi-level monitoring wells, suffix of well ID indicates depth (rounded to nearest foot) from reference point on casing to bottom of well screen. For Waterloo multi-level systems, suffix indicates depth (rounded to nearest foot) from reference point on casing to top of sampling port. Well IDs without a suffix are open bedrock wellbores.

2. Projected sampling frequencies presented for 2009 are subject to change.
3. For nested multi-level montoring wells, interval includes well screen and sand pack. For Waterloo multi-level systems, interval includes open wellbore between bottom of 1st packer above and top of 1st packer below sampling port. For open bedrock wellbores, interval extends from bottom of casing to bottom of hole.4. Sampling depths within sampling intervals (i.e. location of pump intake) have been located adjacent to a transmissive zone where possible.5. Dot pattern denotes sampling interval is positioned within overburden. Open box indicates sampling interval is in bedrock.6. These locations are storm drains.J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table1 - Q1.09.Methods, Frequency, Depths.xls; Methods, Frequency, DepthsPage 3 of 3See Page 3 for Notes TABLE 2 QUARTERLY LOW TIDE GROUNDWATER ELEVATIONSINDIAN POINT ENERGY CENTERBUCHANAN, NYQuarter 2 1, 2008Quarter 3 2, 2008Quarter 4 3, 2008Quarter 1 4 , 2009HR1-1.13-1.05-1.69-3.28I252.1152.9050.75NA MW-30-6912.2811.7711.7112.33 MW-30-8413.0612.6812.3613.13 MW-31-4946.1445.3944.1346.44 MW-31-6343.9642.1741.2144.12 MW-31-8541.8940.5839.6442.10 MW-32-4847.7746.9845.7948.08 MW-32-5946.7545.7244.4846.83 MW-32-8513.1712.3012.1612.60 MW-32-13115.6711.3411.5311.86 MW-32-14910.049.719.7710.00 MW-32-1739.709.459.459.68 MW-32-1907.527.167.057.24 MW-3311.6610.5510.6011.23 MW-3412.0310.5410.5411.25 MW-3512.0610.6810.6811.36 MW-36-246.867.589.05NA MW-36-526.296.997.458.12 MW-37-224.185.365.554.45MW3732405536564455Well ID LOW RIVER TIDE GR OUNDWATER ELEVATIONS(Feet msl)

MW-37-32 4.05 5.36 5.64 4.55MW-37-405.956.186.045.46MW-37-576.076.647.206.50 MW-381.532.121.22NA MW-39-6731.6925.9625.2128.74 MW-39-8431.4825.7825.1228.62 MW-39-10031.3425.5224.7928.32 MW-39-102NANANANA MW-39-12430.6725.0724.4327.74 MW-39-18329.8322.3323.7926.78 MW-39-19528.8923.3522.7025.63 MW-40-2759.9954.7054.2259.53 MW-40-4659.0952.5752.3559.13 MW-40-8155.7847.2846.8355.67 MW-40-10053.7544.8344.3253.59 MW-40-12753.3944.3343.8753.29 MW-40-16250.2641.3240.6649.76 MW-41-4033.8131.2830.7133.62 MW-41-6332.7627.5326.9630.38 MW-42-4934.8134.5234.4334.78 MW-42-7836.2835.3835.0736.03 MW-43-2833.9532.5132.1533.43 MW-43-6232.1630.4831.7634.13 MW-44-6635.4735.2934.0034.96MW441023088258625162809MW-44-10230.8825.8625.1628.09 MW-45-4237.1628.6325.4532.02 MW-45-6132.4627.1626.6829.99 MW-4614.9712.6212.8114.29 MW-47-5731.5322.8422.3726.51 MW-47-8028.3521.5221.0826.37 MW-48-23-0.23-0.18-0.48-0.91 MW-48-380.320.06-0.15-0.50 MW-49-260.510.370.49-0.25 MW-49-420.921.020.68-0.06 MW-49-650.700.680.47-0.08 MW-50-425.246.407.065.66 MW-50-662.242.832.341.95 MW-51-4052.3549.4449.2449.32 MW-51-7944.1740.7140.3642.75 MW-51-10239.0436.5636.1738.18 MW-51-10439.0236.4936.0337.99 MW-51-13540.7138.1037.6839.75 MW-51-16336.7734.3033.9035.74 MW-51-18931.7929.6529.3630.81 MW-52-118.858.658.448.19 MW-52-186.075.896.025.78 MW-52-485.956.206.146.05 MW-52-645.035.215.165.20MW-52-1184.324.364.684.23 MW-52-1224.184.214.554.11 MW-52-162-0.80-0.98-1.30-2.07 MW-52-181-1.00-1.30-1.64-2.38 MW-53-8212.6010.35NA11.11 MW-53-12011.499.76NA10.55 MW-54-356.366.166.415.75 MW-54-376.536.306.585.90 MW-54-585.555.535.765.49 MW-54-1233.524.014.062.99 MW-54-1446.486.926.975.89 MW-54-1732.853.273.292.19 MW-54-1902.763.163.132.00MW-55-248.168.189.028.35J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table2 - Quarterly GW Elevations.xlsx; gw elevationsPage 1 of 2See Page 2 for Notes TABLE 2 QUARTERLY LOW TIDE GROUNDWATER ELEVATIONSINDIAN POINT ENERGY CENTERBUCHANAN, NYQuarter 2 1, 2008Quarter 3 2, 2008Quarter 4 3, 2008Quarter 1 4 , 2009Well ID LOW RIVER TIDE GR OUNDWATER ELEVATIONS(Feet msl)MW-55-357.597.698.307.63MW-55-548.328.228.82NA MW-56-5329.93NA21.9027.33 MW-56-8329.16NA21.5125.13 MW-57-11NA10.0310.2711.11 MW-57-2012.0710.029.9210.63 MW-57-4510.59NANA10.71 MW-58-26NA7.297.197.56 MW-58-657.367.136.466.68 MW-59-320.770.810.470.31 MW-59-459.23NA2.520.44 MW-59-68-0.11NA-1.79-5.66 MW-60-351.630.822.041.99 MW-60-53-1.37-1.76-2.03-2.70 MW-60-55-0.47-0.90-1.21-1.91 MW-60-72-0.14-0.64NA-1.43 MW-60-135-0.27-0.71-1.02-1.72 MW-60-154-1.49-1.91-2.25-2.99 MW-60-176-1.82-2.16-2.59-3.41 MW-62-180.130.06-0.12-0.82MW6237049059015113MW-62-370.490.59-0.15-1.13 MW-62-52-0.19-0.29-0.93-1.64 MW-62-53-0.10-0.16-0.84-2.03 MW-62-71-0.55-0.56-1.24-2.15 MW-62-92-0.11-0.10-0.85-1.68 MW-62-1380.130.26-0.37-1.33 MW-62-181-0.32-0.36-0.92NA MW-62-182-1.29-1.25-1.85-2.66 MW-63-180.090.32-0.08-0.64 MW-63-350.130.05-0.13-0.74 MW-63-50-0.47-0.55-1.24-2.08 MW-63-91-0.25-0.16-0.89NA MW-63-93-0.30-0.24-0.98-1.68 MW-63-112-1.69-1.60-2.26-3.14 MW-63-121-0.24-0.05-0.86-1.49 MW-63-163-0.86-0.90-1.54-2.46 MW-63-174-0.62-0.61-1.19-1.97 MW-65-4838.6043.22NA48.19 MW-65-8034.9732.9532.7233.71 MW-66-210.050.170.29-0.33 MW-66-360.350.150.10-0.86 MW-67-390.360.41-0.02-0.07 MW-67-1050.570.650.16-0.67 MW-67-173-0.28-0.26-0.82-1.62MW-67-219-0.32-0.32-0.86-1.87 MW-67-2760.440.41-0.14-1.03 MW-67-323-1.13-1.35-1.93-2.86 MW-67-340-0.87-0.96-1.56-2.42 MW-107118.94115.00115.76120.28 MW-10810.07NA9.029.65 MW-10910.127.827.88NA MW-11111.249.7410.4810.87 OUT10.81NANANA RW130.0429.5229.0529.10 U1CSS19.1115.39NA20.46 U3-1NANANANA U3-2NANANANA U3-39.258.258.949.13 U3-4D2.743.492.693.41 U3-4S3.974.313.814.01 U3-C10.992.360.810.64 U3-T13.864.333.693.83U3-T23.944.283.764.05 Notes:NA: data not available1. Quarter 2, 2008 groundwater elevations were measured on 4/4/08 at 5:14 pm.

2. Quarter 3 , 2008 groundwater elevations were measured on 7/10/08 at 11:35 am.
2. Quarter 3 , 2008 groundwater elevations were measured on 7/10/08 at 11:35 am.3. Quarter 4, 2008 groundwater elevations were measured on 11/11/08 at 2:54 am.
4. Quarter 1, 2009 groundwater elevations were measured on 1/9/09 at 2:42.J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table2 - Quarterly GW Elevations.xlsx; gw elevationsPage 2 of 2See Page 2 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageMW-30-69Q2-200801869.36.45/6/200811:00153000.003010.00406.000.330.400.670.491.833.21-0.571.712.73 NA 5NANA118900.00 ND 6NDNDNAMW-30-69MW-30-69Confirmatory 1201969.36.46/6/200811:0173600.002020.00506.000.200.320.56-0.982.103.270.492.243.85NANANA118900.00NDNDNDMW-30-69MW-30-69Q3-200802069.36.48/5/200811:22199000.003920.00495.000.210.310.53-0.161.422.381.111.282.33NANANA118900.00NDNDNDMW-30-69MW-30-69Mid-Quarter 1302169.36.49/3/200811:2985300.002030.00550.00-0.310.510.97-1.892.223.36NANANANANANA118900.00NDNDNAMW-30-69MW-30-69Q4-200802269.36.411/7/200810:2795500.002850.00306.000.410.550.600.783.093.66-0.112.652.85NANANA118900.00NDNDNDMW-30-69MW-30-69Q1-200902369.36.41/30/200911:00107000.002505.00198.00-0.090.760.97-1.132.612.661.062.703.24NANANA118900.00NDNDNDMW-30-69MW-30-84Q2-200800983.8-8.15/6/200813:404180.00283.00220.000.330.390.650.442.374.00-1.912.533.69NANANA4343.33ND8.97NDNAMW-30-84MW-30-84Confirmatory01083.8-8.16/6/200812:103850.00533.00504.000.150.250.43-0.902.163.572.052.314.29NANANA4343.33ND8.97NDMW-30-84MW-30-84Q3-200802083.8-8.18/5/200814:404310.00228.00194.000.280.290.47-0.191.442.35-0.102.122.66NANANA4343.33ND8.97NDMW-30-84MW-30-84Mid-Quarter02183.8-8.19/3/200811:593780.00513.00535.00-0.050.460.91-0.301.73289.00NANANANANANA4343.33ND8.97MW-30-84MW-30-84Q4-200801383.8-8.111/7/200810:505250.00323.00164.000.010.580.760.664.635.372.135.346.53NANANA4343.33ND8.97NDMW-30-84MW-30-84Q1-200901483.8-8.11/30/200911:214690.00547.50199.000.090.600.728.974.343.02-0.083.393.81NANANA4343.33ND8.97NDMW-30-84MW-31-49Q2-200800948.826.86/6/200815:0530400.001340.00469.000.280.340.571.111.933.471.722.013.82NANANA9519.00NDNDNDNAMW-31-49MW3149Q32008 0104882688/7/20081243594001330019200024027044071130223071149256 NA NA NA951900 ND ND NDMW3149SAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 (pCi/L)MW-31-49Q3-200801048.826.88

/7/200812:43594.00133.00192.000.240.270.440.711.302.230.711.492.56NANANA9519.00NDNDNDMW-31-49MW-31-49Mid-Quarter01148.826.88/30/200811:5513600.00861.00553.000.420.480.811.273.633.09NANANANANANA9519.00NDNDMW-31-49MW-31-49Q4-200801248.826.810/30/200811:30643.00225.00171.000.080.170.191.396.277.25-0.916.406.88NANANA9519.00NDNDNDMW-31-49MW-31-49Confirmatory01348.826.811/18/200811:15777.00179.00162.000.410.630.701.214.185.030.984.935.84NANANA9519.00NDNDNDMW-31-49MW-31-49Q1-200901448.826.82/6/200911:0511100.00786.00199.000.120.300.36-0.172.973.35-0.462.853.14NANANA9519.00NDNDNDMW-31-49MW-31-63Q2-200800963.312.36/6/200816:1610200.00792.00504.000.140.340.62-1.152.113.362.472.314.45NANANA18533.33NDNDNDNAMW-31-63MW-31-63Q3-200801063.312.38/7/200811:2217600.00417.00194.00-0.210.260.59-0.191.282.160.371.432.49NANANA18533.33NDNDNDMW-31-63MW-31-63Mid-Quarter01163.312.38/30/200812:3422100.001070.00549.00-0.630.440.980.382.354.04NANANANANANA18533.33NDNDNDMW-31-63MW-31-63Q4-200801263.312.310/30/200812:1423000.001080.00173.000.230.230.252.216.187.37-1.477.267.77NANANA18533.33NDNDNDMW-31-63MW-31-63Confirmatory01363.312.311/18/200811:5825500.00807.00184.000.400.740.840.015.896.01-0.526.546.97NANANA18533.33NDNDNDMW-31-63MW-31-63Q1-200901463.312.32/6/200911:5312800.00838.50197.000.640.640.68-1.323.423.63-0.753.864.17NANANA18533.33NDNDNDMW-31-63MW-31-85Q2-200800984.8-9.26/6/200815:265950.00630.00505.000.150.320.57-0.812.203.451.912.454.58NANANA5376.67NDNDNDNAMW-31-85MW-31-85Q3-200801084.8-9.28/7/200811:132300.00183.00194.000.110.290.53-0.651.221.940.021.312.18NANANA5376.67NDNDNDMW-31-85MW-31-85Mid-Quarter01184.8-9.28/30/200812:088340.00700.00552.000.450.490.81-0.551.863.07NANANANANANA5376.67NDNDNDMW-31-85MW-31-85Q4-200801284.8-9.210/30/200812:093890.00452.00167.000.410.730.83-5.636.174.73-4.826.986.56NANANA5376.67NDNDNDMW-31-85MW-31-85Confirmatory01384.8-9.211/18/200812:004410.00297.00161.00-0.240.540.812.133.794.762.843.825.19NANANA5376.67NDNDNDMW-31-85MW-31-85Q1-200901484.8-9.22/6/200911:227370.00654.00202.000.390.560.621.223.504.061.093.574.23NANANA5376.67NDNDNDMW-31-85MW-32-59Q2-200800358.818.35/5/200815:334150.00201.00182.000.080.520.97-0.711.893.051.252.013.77NANANA4865.50NDNDNDNAMW-32-59MW3259MidQ 0045881836/9/200812102850004810050600034036076122194298071243391 NA NA NA486550 ND ND NDMW3259MW-32-59Mid-Quarte r00458.818.36/9/200812:102850.00481.00506.00-0.340.360.76-1.221.942.98-0.712.433.91NANANA4865.50NDNDNDMW-32-59MW-32-59Q3-200800558.818.37/31/200813:231540.00163.00194.000.170.380.690.471.973.33-1.082.483.26NANANA4865.50NDNDNDMW-32-59MW-32-59Mid-Quarter00658.818.39/2/200813:522440.00459.00553.000.220.550.990.781.853.21NANANANANANA4865.50NDNDNDMW-32-59MW-32-59Q4-200800758.818.310/24/200813:59413.00200.00173.000.160.610.74-0.357.517.30-1.326.296.66NANANA4865.50NDNDNDMW-32-59MW-32-59Q1-200900858.818.32/4/200915:4617800.001030.50198.00-0.100.570.770.103.543.412.703.414.34NANANA4865.50NDNDNDMW-32-59MW-32-85Q2-200800685.385.35/5/200814:108360.00264.00181.00-0.070.390.761.952.163.96-0.362.063.27NANANA8358.33NDNDNDNAMW-32-85MW-32-85Mid-Quarter00785.385.36/9/200812:2511100.00821.00504.00-0.100.360.711.392.013.68-0.552.043.34NANANA8358.33NDNDNDMW-32-85MW-32-85Q3-200800885.385.37/31/200814:357480.00283.00193.000.120.340.620.212.063.501.071.883.43NANANA8358.33NDNDNDMW-32-85MW-32-85Mid-Quarter00985.385.39/2/200814:408050.00690.00552.000.140.420.77-1.372.453.52NANANANANANA8358.33NDNDNDMW-32-85MW-32-85Q4-200801085.385.310/24/200814:508620.00666.00172.000.110.460.571.395.786.623.085.897.32NANANA8358.33NDNDNDMW-32-85MW-32-85Q1-200901185.385.32/4/200915:496540.00637.50198.000.530.780.850.492.853.312.273.204.15NANANA8358.33NDNDNDMW-32-85MW-32-131Q2-2008006130.8-53.75/5/200812:351030.00136.00183.00-0.290.400.78-1.212.283.55-0.332.273.66NANANA1030.00NDNDNDNAMW 131MW-32-149Q2-2008006149.3-72.25/5/200810:54883.00131.00182.000.740.510.79-2.992.673.712.042.124.12NANANA545.75NDNDNDNAMW-32-149MW-32-149Q3-2008007149.3-72.27/31/200811:10532.00131.00194.000.010.350.681.061.652.871.421.562.81NANANA545.75NDNDNDMW-32-149MW-32-149Q4-2008008149.3-72.210/24/200810:28503.00210.00172.000.470.650.701.805.226.071.254.965.82NANANA545.75NDNDNDMW-32-149MW-32-149Q1-2009009149.3-72.22/4/200913:50265.00117.90117.000.450.680.730.542.993.380.332.913.28NANANA545.75NDNDNDMW-32-149MW-32-173Q2-2008003172.8-95.75/5/200810:331690.00152.00182.000.010.350.710.202.183.640.552.243.91NANANA1105.60NDNDNDNAMW-32-173MW-32-173Q3-2008004172.8-95.77/31/200810:521080.00148.00192.000.680.450.71-1.171.582.470.611.652.96NANANA1105.60NDNDNDMW-32-173MW-32-173Mid-Quarte r005172.8-95.79/2/200811:30972.00372.00548.000.190.460.84-1.022.673.88NANANANANANA1105.60NDNDNDMW-32-173MW-32-173Q4-2008006172.8-95.710/24/200810:251030.00267.00174.000.110.360.440.865.676.612.306.367.74NANANA1105.60NDNDNDMW-32-173MW-32-173Q1-2009007172.8-95.72/4/200913:40756.00145.20117.000.260.430.471.793.654.412.563.474.49NANANA1105.60NDNDNDMW-32-173MW-32-190Q2-2008006190.3-113.75/5/200810:576730.00241.00182.00-0.170.430.82-1.182.083.24-2.623.162.97NANANA4258.00NDNDNDNAMW-32-190MW-32-190Q3-2008007190.3-113.77/31/200811:244710.00235.00194.000.320.340.55-0.851.552.532.221.773.30NANANA4258.00NDNDNDMW-32-190MW-32-190Mid-Quarter008190.3-113.79/2/200811:403810.00520.00544.000.590.580.951.392.824.63NANANANANANA4258.00NDNDNDMW-32-190MW-32-190Q4-2008009190.3-113.710/24/200810:313350.00431.00173.000.000.580.740.595.335.983.855.687.16NANANA4258.00NDNDNDMW-32-190MW-32-190Q1-2009010190.3-113.72/4/200913:452690.00426.00198.000.240.560.650.042.672.950.473.023.44NANANA4258.00NDNDNDMW-32-190MW-33Q2-200802219.2-0.44/28/200815:0058500.001160.00258.000.170.300.520.111.873.12-0.052.123.49NANANA63250.00NDNDNDNAMW-33MW-33Mid-Quarter02319.2-0.49/4/200814:4168000.001820.00547.000.130.410.760.551.612.83NANANANANANA63250.00NDNDNDMW-33MW-35Q2-200801819-0.44/28/200813:381040.00177.00219.000.230.300.50-0.032.033.34-0.062.363.87NANANA1040.00NDNDNDNAMW-35MW-36-24 7Q3-200801116.1-4.37/24/200813:571020.00122.00163.000.340.380.620.402.093.61-0.552.373.85NANANA486.00NDNDNDNAMW-36-24J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 1 of 7See Page 7 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageSAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 (pCi/L)MW-36-24Q4-200801216.1-4.311/10/200815:33201.00150.00161.000.550.750.800.006.814.462.723.845.41NANANA486.00NDNDNDMW-36-24MW-36-24Q1-200901316.1-4.31/22/200912:48237.00115.80106.00-0.630.740.950.542.883.340.323.353.82NANANA486.00NDNDNDMW-36-24MW-36-52Q3-200801049.7-37.97/24/200816:0012600.00766.00374.005.670.740.47-0.482.243.690.032.113.53NANANA10130.005.77NDNDNAMW-36-52MW-36-52Q4-200801149.7-37.911/10/200816:5311000.00440.00163.008.271.240.39-0.393.864.211.364.675.65NANANA10130.005.77NDNDMW-36-52MW-36-52Q1-200901249.7-37.91/22/200912:596790.00603.00206.003.370.900.61-0.612.963.241.653.244.05NANANA10130.005.77NDNDMW-36-52MW-37-22Q3-200801117-27/24/200811:204330.00228.00195.0012.201.250.710.432.133.662.972.574.83NANANA4093.3313.00NDNDNAMW-37-22MW-37-22Q4-20080120011/10/200812:202680.00392.00174.0018.001.880.412.814.965.96-0.294.534.88NANANA4093.3313.00NDND MW-37-22Q1-2009013001/21/200914:275270.00535.50205.008.811.330.68-0.313.023.27-2.033.092.82NANANA4093.3313.00NDND MW-37-32Q3-200801129-147/24/200812:285160.00245.00195.0020.601.510.86-0.411.582.18-0.152.042.58NANANA3936.6716.77NDNDNAMW-37-32MW-37-32Q4-20080120011/10/200812:202890.00401.00171.0018.601.950.401.715.336.240.415.376.14NANANA3936.6716.77NDNDMW-37-32MW-37-32Q1-2009013001/21/200914:303760.00460.50204.0011.101.490.631.592.843.40-0.713.323.49NANANA3936.6716.77NDNDMW-37-32MW-37-40Q3-200801139.2-24.27/24/200813:125240.00243.00191.001.310.440.51-1.101.522.48-1.352.112.70NANANA5213.331.97NDNDNAMW 40MW-37-40Q4-200801239.2-24.211/10/200816:175490.00545.00176.001.130.530.380.366.036.835.047.429.22NANANA5213.331.97NDNDMW-37-40MW3740Q12009 0133922421/22/200913054910005130020000347089057264378327267314408 NA NA NA521333197 ND NDMW3740MW-37-40Q1-200901339.2-24.21/22/200913:054910.00513.00200.003.470.890.57-2.643.783.272.673.144.08NANANA5213.331.97NDNDMW-37-40MW-37-57Q3-200801153.2-38.27/24/200813:205330.00247.00194.0021.201.460.53-0.711.883.07-1.172.103.24NANANA4880.0021.70NDNDNAMW-37-57MW-37-57Q4-200801253.2-38.211/10/200811:044270.00477.00171.0024.002.290.64-0.166.086.800.987.188.14NANANA4880.0021.70NDNDMW-37-57MW-37-57Q1-200901353.2-38.21/21/200914:225040.00520.50202.0019.901.970.670.043.443.801.053.714.35NANANA4880.0021.70NDNDMW-37-57MW-39-67Q2-200800467135/1/200813:48318.00124.00196.002.210.620.68-0.301.582.530.361.803.11NANANA366.502.76NDNDNAMW-39-67MW-39-67Q4-2008005671310/23/200812:53415.00201.00199.003.311.120.77-1.285.465.95-0.125.386.06NANANA366.502.76NDNDMW-39-67MW-39-84Q2-200800483.5-3.55/1/200814:10150.00118.00196.002.230.710.89-0.212.243.67-0.212.243.67NANANA234.001.64NDNDNAMW-39-84MW-39-84Q4-200800583.5-3.510/23/200812:56234.00188.00199.001.040.690.591.745.886.931.126.988.05NANANA234.001.64NDNDMW-39-84MW-39-102Q2-2008004101.5-21.54/30/200814:56503.00169.00244.000.880.540.80-1.022.634.000.491.903.34-10.7014.0024.80503.001.06NDNDNDMW-39-102MW-39-102Q4-2008005101.5-21.510/22/200813:56168.00183.00200.001.230.720.590.666.186.75-1.905.475.53NANANA503.001.06NDNDMW-39-102MW-39-124Q2-2008004124-444/30/200815:24215.0095.00153.001.790.660.89-1.232.133.400.592.193.89-11.3014.2025.20223.001.37NDNDNDMW-39-124MW-39-124Q4-2008005124-4410/22/200814:00231.00188.00200.000.940.650.561.036.647.611.636.988.11NANANA223.001.37NDNDMW-39-124MW-39-183Q2-2008004182.5-102.54/30/200815:03112.00106.00177.001.120.570.780.152.454.140.802.604.481.8314.6025.00ND1.12NDNDNDMW-39-183MW-39-183Q4-2008005182.5-102.510/22/200814:0753.90173.00197.000.350.730.84-4.166.887.09-3.087.777.39NANANAND1.12NDNDMW-39-183MW-39-195Q2-2008004195-1154/30/200816:10274.00150.00236.001.210.550.83-1.172.283.710.022.484.21-2.5914.5025.10274.001.05NDNDNDMW-39-195MW-39-195Q4-2008005195-11510/22/200814:26172.00183.00200.000.880.720.694.145.576.901.816.767.96NANANA274.001.05NDNDMW-39-195MW-40-27Q3-200800426.746.58/11/200813:19222.00106.00172.000.370.420.710.612.284.00-0.372.563.83-7.5711.5020.50222.00NDNDNDNDMW-40-27MW-40-27Q4-200800526.746.510/28/200814:58142.00180.00195.000.480.580.61-1.555.736.22-1.466.867.416.2816.4018.50222.00NDNDNDMW-40-27MW-40-27Q1-200900626.746.51/19/200914:29120.00134.25148.000.480.640.680.633.413.861.462.903.58-1.8618.0020.90222.00NDNDNDMW-40-27MW-40-46Q3-200800546.2278/11/200813:35168.00104.00171.00-0.330.380.810.131.993.311.092.053.644.0411.7020.10NDNDNDNDNDMW-40-46 MW-40-46Q4-200800646.22710/28/200815:3088.00174.00198.000.650.700.720.286.587.491.836.307.480.9317.1019.60NDNDNDNDMW-40-46MW-40-46Q1-200900746.2271/19/200914:2877.60132.60148.000.270.500.570.812.883.39-1.192.782.88-5.6318.9022.20NDNDNDNDMW-40-46MW-40-81Q3-200800580.7-7.58/11/20089:43242.00106.00171.000.170.370.65-0.081.692.780.261.923.25-2.9611.0019.20201.50NDNDNDNDMW-40-81MW-40-81Q4-200800680.7-7.510/28/200811:2030.40161.00193.00-0.180.420.632.045.286.24-0.876.757.32-2.3823.3026.90201.50NDNDNDMW-40-81MW-40-81Q1-200900780.7-7.51/19/200910:38161.00136.50148.000.290.580.65-0.473.624.01-1.413.773.92-7.5517.7020.90201.50NDNDNDMW-40-81MW-40-100Q2-2008006100.2-275/30/200812:45116.0098.40160.000.120.560.98-0.742.123.48-0.872.003.15NANANA193.00NDNDNDNDMW-40-100MW-40-100Q3-2008007100.2-278/11/200810:10193.00105.00171.00-0.030.290.58-0.121.592.680.641.522.700.0010.9018.90193.00NDNDNDMW-40-100MW-40-100Q4-2008008100.2-2710/28/200811:3086.60173.00195.000.110.640.78-1.256.507.113.927.028.63-0.7717.9020.60193.00NDNDNDMW-40-100MW-40-100Q1-2009009100.2-271/19/200911:5242.40130.35148.000.110.600.730.615.973.850.133.153.61-9.8018.9022.40193.00NDNDNDMW-40-100MW-40-127Q2-2008006127.2-545/30/200813:0032.7091.60163.00-0.480.530.970.692.233.431.362.003.62NANANANDNDNDNDNDMW-40-127 MW-40-127Q3-2008007127.2-548/11/200810:34168.00104.00170.000.170.240.420.121.652.810.011.492.51-8.7711.3020.10NDNDNDNDMW-40-127MW-40-127Q4-2008008127.2-5410/28/200812:1075.30170.00195.000.440.710.79-2.536.466.88-4.338.237.680.0016.6019.30NDNDNDNDMW-40-127MW-40-127Q1-2009009127.2-541/19/200911:2592.20133.05148.00-0.080.720.90-1.203.753.941.683.664.45-3.3418.4521.60NDNDNDNDMW-40-127MW-40-162Q3-2008005161.7-88.58/11/200811:44230.00108.00175.000.080.420.780.632.434.163.152.074.11-5.2712.2021.60230.00NDNDNDNDMW-40-162MW-40-162Q4-2008006161.7-88.510/28/200813:15112.00177.00196.000.280.640.74-2.005.846.262.116.087.293.7517.9020.40230.00NDNDNDMW-40-162MW-40-162Q1-2009007161.7-88.51/19/200911:47107.00133.35148.000.130.520.62-0.403.323.670.422.963.41-9.1718.4522.00230.00NDNDNDMW-40-162MW-41-40Q4-200801134.420.510/22/200814:492210.00726.00592.005.911.100.423.076.337.66-3.608.648.40NANANA2210.005.91NDNDNAMW-41-4 0MW-41-63Q4-200801059.5-4.610/22/200812:34691.00573.00592.005.691.130.442.605.596.710.906.087.02NANANA691.005.69NDNDNAMW-41-63MW-42-49Q2-200801042.627.15/13/200813:203240.00256.00144.0023.601.540.5514100.00789.0014.7016.904.474.67734.0028.5021.904100.00205.0526750.0016.90489.33MW-42-49MW-42-49Q3-200801142.627.18/4/200814:243160.00265.00191.0035.601.720.5610600.00613.0012.00-0.012.694.52313.0026.0026.10MW-42-49MW-42-49Mid-Quarter01242.627.19/5/200812:5213200.00836.00508.00296.004.980.4022100.001380.0015.80NANANA462.0021.7020.30MW-42-49MW-42-49Q4-200801342.627.110/31/200813:272600.00377.00163.0096.104.340.4217800.001580.0018.300.596.967.78271.0027.3019.90MW-42-49MW-42-49Mid-Quarter01442.627.111/17/200814:561120.00201.00173.00102.006.961.2815400.001160.0017.403.265.216.76244.0030.0022.50MW-42-49MW-42-49Q1-200901542.627.11/26/200916:161280.00303.00206.00677.0011.250.7480500.008010.0026.600.005.245.56912.0045.0019.00MW-42-49MW-42-78Q3-200800974-4.38/4/200812:07618.00150.00191.000.390.260.382.712.023.75-0.642.103.29-0.7615.2026.80515.000.39NDNDNDMW-42-78MW-42-78Q4-200801074-4.310/31/200813:34562.00212.00165.000.040.300.390.335.686.340.836.727.683.6917.7020.20515.000.39NDMW-42-78MW-42-78Q1-200901174-4.31/30/200911:22365.00217.50200.000.440.650.700.673.323.88-0.193.573.99NANANA515.000.39NDMW-42-78MW-43-28Q4-200801023.525.310/31/200814:17265.00158.00166.00-0.110.400.574.075.196.44-1.166.216.63NANANA265.00NDNDNDNAMW-43-28J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 2 of 7See Page 7 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageSAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 (pCi/L)MW-43-62Q4-200801051-2.210/31/200813:16225.00156.00166.000.200.410.470.006.456.962.596.307.60NANANA225.00NDNDNDNAMW-43-62MW-44-66Q2-200800862.431.14/30/200815:38161.00119.00196.000.040.410.79-0.092.063.380.912.444.27NANANA358.00NDNDNDNAMW-44-66MW-44-66Q3-200800962.431.17/25/200812:18550.00255.00375.000.310.370.62-2.332.533.03-0.211.742.85NANANA358.00NDNDMW-44-66MW-44-66Q4-200801062.431.110/23/200813:17318.00161.00166.000.320.380.39-3.205.215.30-1.595.736.02NANANA358.00NDNDMW-44-66MW-44-66Q1-200901162.431.12/3/20099:40206.00192.00197.000.450.800.901.963.534.183.093.064.12NANANA358.00NDNDMW-44-66MW-44-102Q2-20080098013.54/30/200815:28256.00122.00196.000.080.370.711.032.033.63-2.073.044.52NANANA356.25NDNDNDNAMW-44-102MW-44-102Q3-20080108013.57/25/200812:18437.00246.00375.00-0.030.180.32-0.411.782.881.351.873.41NANANA356.25NDNDMW-44-102MW-44-102Q4-20080118013.510/23/200813:48475.00168.00165.000.200.470.541.726.247.282.398.128.47NANANA356.25NDNDMW-44-102MW-44-102Q1-20090128013.52/2/200912:06257.00193.50193.000.470.610.670.983.394.02-0.973.533.74NANANA356.25NDNDMW-44-102MW-45-42Q2-20080123716.65/1/200815:151130.00151.00196.00-0.040.310.630.671.993.47-1.173.624.55NANANA2000.00NDNDNDNAMW-45-42MW-45-42Q3-20080133716.67/25/200816:402320.00377.00374.000.300.280.44-1.771.762.531.091.763.19NANANA2000.00NDNDMW-45-42MW-45-42Q4-20080143716.610/22/200814:553140.00803.00591.000.460.520.53-1.645.075.26-3.004.934.36NANANA2000.00NDNDMW-45-42MW-45-42Q1-20090153716.62/2/200918:021410.00327.00197.00-0.180.440.66-1.412.572.67-1.272.552.57NANANA2000.00NDNDMW-45-42MW4561Q22008 012 58 445/1/200810162210001800019500069050077032207359129225353 NA NA NA166000 ND ND ND NAMW4561MW-45-61Q2-200801258-4.45/1/200810:162210.00180.00195.000.690.500.770.322.073.59-1.292.253.53NANANA1660.00NDNDNDNAMW-45-61MW-45-61Q3-200801358-4.47/25/200813:511800.00346.00376.000.240.250.41-1.881.912.800.781.913.40NANANA1660.00NDNDMW-45-61MW-45-61Q4-200801458-4.410/22/20089:331270.00635.00590.000.200.580.69-1.525.075.321.045.736.58NANANA1660.00NDNDMW-45-61MW-45-61Q1-200901558-4.42/2/200913:131360.00324.00199.00-0.150.760.950.993.594.200.233.233.66NANANA1660.00NDNDMW-45-61MW-46Q2-200801210.57.64/29/200816:00521.00153.00220.000.410.350.560.792.123.750.462.243.90NANANA918.000.93NDNDNAMW-46MW-46Q3-200801310.57.67/24/200816:56771.00275.00377.000.270.310.510.611.963.38-1.892.103.09NANANA918.000.93NDMW-46MW-46Q4-200801410.57.610/20/200815:271380.00644.00589.000.930.590.51-2.275.885.91-0.595.636.09NANANA918.000.93NDMW-46MW-46Q1-200901510.57.62/5/200913:461000.00288.00196.00-0.130.620.78-1.682.782.710.702.823.28NANANA918.000.93NDMW-46MW-49-26Q2-200801219.1-4.44/25/200812:455000.00313.00144.0018.101.320.572.682.364.342.082.224.141.7611.9020.503882.5015.85NDNDNDMW-49-26MW-49-26Q3-200801319.1-4.47/30/200815:033960.00173.00130.0016.201.270.84-0.981.742.741.312.173.93-2.8116.4029.203882.5015.85ND MW-49-26Q4-200801419.1-4.411/5/200815:543470.00455.00191.0015.302.060.61-1.365.035.26-0.324.655.182.9617.7020.203882.5015.85ND MW-49-26Q1-200901519.1-4.42/6/200913:033100.00265.50169.0013.801.910.861.774.344.541.263.564.2423.1022.0524.203882.5015.85ND 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Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 3 of 7See Page 7 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageSAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 (pCi/L)MW-51-189Q1-2009008189.2-121.51/20/200911:3333.20129.90148.00-0.210.350.56-2.053.483.621.913.324.20-8.3317.8521.10NDNDNDMW-51-189MW-52-11Q2-2008003106.84/28/200813:231130.00153.00196.000.200.470.850.521.933.36-2.153.524.08NANANA1130.00NDNDNDNAMW-52-11MW-52-122Q2-2008003122-107.14/28/200815:2388.7086.00144.000.120.290.52-1.252.053.242.722.384.52NANANANDNDNDNDNAMW-52-122MW-52-162Q2-2008003161.5-146.64/28/200810:22145.0087.30143.001.030.360.44-0.912.033.312.332.134.14NANANA145.001.03NDNDNAMW-52-1 62MW-52-181Q2-2008003181-166.14/29/200810:24156.0087.70144.000.160.250.431.082.253.960.412.123.63NANANA156.00NDNDNDNAMW-52-181MW-53-82Q3-200800875-4.78/4/200812:251210.00184.00191.000.700.300.392.792.264.160.032.143.5811.5012.4020.902088.001.50NDNDNDMW-53-82MW-53-82Q4-200800975-4.710/30/200815:52794.00237.00165.00-0.050.300.423.666.217.56-1.786.336.63-4.8316.5019.202088.001.50NDMW-53-82MW-53-82Q1-200901075-4.71/26/200912:004260.00306.00192.002.301.070.981.103.964.51-0.233.593.888.0416.3518.402088.001.50NDMW-53-82MW-53-120Q2-2008008109.8-39.55/13/200810:105910.00338.00143.0031.101.730.67-1.391.983.101.332.153.9922.2012.8020.805523.3331.10NDND22.70MW-53-120MW-53-120Q3-2008009109.8-39.58/4/200810:155800.00346.00191.0030.301.520.31-0.971.933.02-0.122.333.2026.5013.0021.105458.5730.04ND22.70MW-53-120MW-53-120Mid-Quarter010109.8-39.59/5/200810:555760.00590.00507.0031.001.590.41-0.332.413.94NANANA19.4011.900.395458.5730.04ND22.70MW-53-120MW-53-120Q4-2008011109.8-39.510/30/200813:005570.00539.00166.0025.302.040.382.734.755.740.009.139.265.8216.9019.305458.5730.04ND22.70MW-53-120MW-53-120Mid-Quarter012109.8-39.511/17/200810:315040.00323.00172.0042.503.630.670.334.725.28-0.024.094.4921.2020.3022.105458.5730.04ND22.70MW-53-120MW53120Q12009 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Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 4 of 7See Page 7 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageSAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 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10Q3-200800793-80.77/29/200814:17238.00125.00192.000.000.220.39-0.402.013.36-0.321.963.23NANANA317.50NDNDMW-63-93MW-63-93Q4-200800893-80.711/5/200810:14390.00375.00386.00-0.100.190.241.535.105.922.806.247.60NANANA317.50NDNDMW-63-93MW-63-93Q1-200900993-80.71/29/200914:20340.00208.50193.000.120.630.78-0.943.173.42-0.823.633.88NANANA317.50NDNDMW-63-93J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 5 of 7See Page 7 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageSAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 (pCi/L)MW-63-112Q2-2008005111.5-99.24/23/200811:08372.00168.00265.00-0.040.400.790.482.303.891.752.784.52-0.5014.3024.80322.75NDNDNDNDMW-63-112MW-63-112Q3-2008006111.5-99.27/29/200814:20207.00101.00163.000.710.540.870.662.233.891.072.464.41NANANA322.75NDNDMW-63-112MW-63-112Q4-2008007111.5-99.211/4/200812:41275.00192.00201.000.470.590.620.195.686.43-2.758.347.58NANANA322.75NDNDMW-63-112MW-63-112Q1-2009008111.5-99.21/30/200914:39437.00220.50197.000.020.780.92-1.102.812.861.773.414.13NANANA322.75NDNDMW-63-112MW-63-121Q2-2008005121-108.74/23/200811:17454.00134.00198.000.540.490.80-0.360.941.55-1.332.711.81-3.2214.1024.60479.000.75NDNDNDMW-63-121MW-63-121 11Q3-2008006121-108.77/29/200814:30344.00104.00161.000.760.380.570.292.083.571.232.304.11NANANA479.000.75NDMW-63-121MW-63-121Q4-2008007121-108.711/4/200812:43495.00206.00198.000.380.750.86-0.805.425.971.206.387.41NANANA479.000.75NDMW-63-121MW-63-121Q1-2009008121-108.71/30/200914:41623.00241.50197.000.730.510.451.913.183.920.912.843.45NANANA479.000.75NDMW-63-121MW-63-163Q2-2008005162.5-150.24/23/200811:23444.00170.00265.000.180.430.790.801.061.840.661.131.945.3015.2026.00539.50NDNDNDNDMW-63-163MW-63-163 10Q3-2008006162.5-150.27/29/200814:56448.00107.00163.00-0.090.250.44-2.092.343.610.902.594.48NANANA539.50NDNDMW-63-163MW-63-163Q4-2008007162.5-150.211/4/200812:45685.00186.00176.00-0.140.550.750.185.376.120.786.217.23NANANA539.50NDNDMW-63-163MW-63-163Q1-2009008162.5-150.21/29/200911:57581.00240.00195.000.290.560.645.827.233.42-0.172.813.03NANANA539.50NDNDMW-63-163MW-63-174Q2-2008005174-161.74/23/200811:21489.00172.00265.00-0.070.370.75-0.572.013.300.372.434.19-2.1414.4025.00476.75NDNDNDNDMW-63-174 10Q32008 006 17416177/29/20081440449001400019200007028048038223371172265379 NA NA NA47675 ND NDMW63174MW-63-174 10Q3-2008006174-161.77/29/200814:40449.00140.00192.000.070.280.48-0.382.233.71-1.722.653.79NANANA476.75NDNDMW-63-174MW-63-174Q4-2008007174-161.711/4/200812:44477.00204.00199.00-0.280.550.78-2.684.834.741.185.456.30NANANA476.75NDNDMW-63-174MW-63-174Q1-2009008174-161.71/29/200911:55492.00228.00197.000.430.600.66-0.453.813.67-1.343.293.32NANANA476.75NDNDMW-63-174MW-66-21Q2-200800414.104/21/200814:10953.00151.00193.001.010.210.280.652.364.070.022.263.74-7.288.8815.50682.750.98NDNDNDMW 21MW-66-21Q3-200800514.107/29/200811:48783.00102.00130.000.910.360.44-1.011.882.921.712.173.99-6.2616.6029.90632.000.988.99MW-66-21Q4-200800614.1011/4/200810:30534.00207.00164.001.030.700.671.444.675.422.985.176.47-5.6817.9020.90632.000.988.99MW-66-21Q1-200900714.101/27/200913:52461.00174.00175.000.290.750.87 8.99 145.453.11-1.872.902.7112.9017.4019.30632.000.988.99MW-66-36Q2-200800433.6-19.54/21/200813:256090.00289.00197.0013.200.530.37-0.292.093.46-2.093.544.13-0.348.9815.405047.5012.80NDNDNDMW-66-36MW-66-36Q3-200800533.6-19.57/29/200812:055010.00191.00130.0012.001.060.620.211.662.82-1.051.933.00-1.0016.9029.805047.5012.80NDMW-66-36Q4-200800633.6-19.511/4/200810:405440.00534.00167.0013.801.710.520.694.324.901.785.246.230.9616.4018.805047.5012.80NDMW-66-36Q1-200900733.6-19.51/27/200913:073650.00762.00441.0012.201.560.62-1.042.883.060.063.273.7214.5016.9518.705047.5012.80NDMW-67-39 8Q3-200800538.3-25.87/28/200814:073870.00172.00130.0013.701.110.40-1.032.603.420.452.153.686.3416.7028.803573.3314.70NDNDNDMW-67-39MW-67-39Q4-200800738.3-25.812/18/200811:303180.00266.00171.0016.201.691.001.184.615.400.735.045.810.8416.8019.403573.3314.70NDMW-67-39MW-67-39Q1-200900838.3-25.81/27/200916:153670.00291.00192.0014.201.710.76-0.802.042.15-0.112.062.2511.2016.8018.703573.3314.70NDMW-67-39MW-67-105Q3-2008005104.8-92.37/28/200814:252160.00140.00137.000.960.350.420.421.592.780.771.512.787.2516.5028.502350.001.04NDNDNDMW-67-105MW-67-105Q4-2008006104.8-92.311/3/200814:212930.00402.00166.001.110.560.46-0.256.367.110.086.877.596.3216.8019.002350.001.04NDMW-67-105MW-67-105Q1-2009007104.8-92.31/27/200916:451960.00241.50192.000.410.830.95-1.133.322.71-0.032.392.6612.1016.3518.102350.001.04NDMW-67-105MW-67-173Q3-2008005172.3-159.87/28/200814:42912.00109.00136.000.110.270.49-1.222.063.19-0.362.143.495.8816.4028.40887.33NDNDNDNDMW-67-173MW-67-173Q4-2008006172.3-159.811/3/200814:37993.00258.00166.00-0.030.260.30-1.416.696.321.496.667.65-1.4016.9019.70833.75ND13.40MW-67-173MW-67-173Q1-2009007172.3-159.81/27/200916:33757.00199.50192.000.440.590.63 13.4 144.852.53-1.242.582.7314.8017.8519.60833.75ND13.40MW-67-173MW-67-219Q3-2008005218.8-206.37/28/200811:001170.00116.00136.00-0.070.230.49-0.291.983.33-0.261.923.185.9916.8029.001169.33NDNDNDNDMW-67-219MW-67-219Q4-2008006218.8-206.311/3/200811:311370.00293.00168.000.090.170.191.324.935.864.006.308.052.3016.5018.801169.33NDNDMW-67-219MW-67-219Q1-2009007218.8-206.31/27/200912:34968.00280.50250.00-0.080.530.71-0.361.892.100.081.832.0911.4021.6024.301169.33NDNDMW-67-219MW-67-276Q3-2008005275.3-262.87/28/200811:091160.00116.00136.00-0.050.280.55-0.891.983.180.591.973.457.5516.2027.701146.67NDNDNDNDMW-67-276MW-67-276Q4-2008006275.3-262.811/3/200811:391180.00275.00166.00-0.050.180.220.385.636.29-0.746.006.507.2917.3019.501146.67NDNDMW-67-276MW-67-276Q1-2009007275.3-262.81/27/200913:011100.00511.50439.000.330.590.670.243.243.70-1.193.743.9611.5016.8018.701146.67NDNDMW-67-276MW-67-323Q3-2008005322.3-309.87/28/200811:25338.0090.80136.00-0.240.370.730.832.303.990.222.043.46-5.9815.9028.60462.33NDNDNDNDMW-67-323MW-67-323Q4-2008006322.3-309.811/3/200811:44684.00224.00164.000.040.340.44-3.565.215.180.435.125.87-7.3815.9018.70462.33NDNDMW-67-323MW-67-323Q1-2009007322.3-309.81/27/200913:50365.00169.50176.00-0.120.410.590.473.864.420.353.383.869.8413.2314.70462.33NDNDMW-67-323MW-67-340Q3-2008005339.8-327.37/28/200811:18511.0093.60130.00-0.340.230.550.312.213.810.902.253.68-6.9415.7027.80567.67NDNDNDNDMW-67-340MW-67-340Q4-2008006339.8-327.311/3/200811:54669.00222.00163.000.080.430.542.236.257.453.656.768.47-8.3415.9018.80567.67NDNDMW-67-340MW-67-340Q1-2009007339.8-327.31/27/200912:44523.00436.50439.000.260.550.630.473.724.19-0.403.413.677.7816.8019.00567.67NDNDMW-67-340MW-107Q2-200800632.7110.14/24/200815:41191.0089.00144.00-0.060.220.44-2.032.784.11-1.382.123.07NANANA191.00NDNDNDNAMW-107MW-107Mid-Quarter00732.7110.15/30/200815:2546.2090.20158.000.070.550.961.221.883.360.552.203.57NANANA191.00NDNDMW-111Q4-200802716.52.49/4/200814:0073900.001890.00547.001.020.360.42-0.822.2236.10NANANANANANA70150.001.02NDNDNAMW-111MW-111Mid-Quarter02816.52.410/21/200814:2066400.002000.00260.000.910.930.97-0.943.603.790.514.325.03NANANA70150.001.02NDU3-4DQ2-200801625.6-10.84/29/200813:27319.00143.00222.000.140.280.490.521.913.36-0.151.732.91NANANA458.75NDNDNDNAU3-4DU3-4DQ3-200801725.6-10.87/28/200816:46466.00250.00379.00-0.360.500.980.292.083.620.482.363.69NANANA458.75NDNDU3-4DU3-4DQ4-200801825.6-10.810/20/200814:40568.00171.00164.00-0.090.861.110.354.625.170.714.134.79NANANA458.75NDNDU3-4DU3-4DMid-Quarter01025.6-10.811/4/200812:00118.00423.00476.00NANANA3.179.516.903.3410.007.54NANANA458.75NANDU3-4DU3-4DConfirmatory01125.6-10.811/10/200812:00316.00414.00461.00NANANA4.1012.308.954.0712.209.41NANANA458.75NANDU3-4DU3-4DQ1-200901925.6-10.82/10/200914:15482.00231.00197.000.100.520.640.392.663.000.753.023.39NANANA458.75NDNDU3-4DU3-T1Q2-20080205.72.85/2/200815:24709.00163.00222.000.720.520.830.291.843.19-1.151.872.82NANANA634.750.87NDNDNAU3-T1U3-T1Q3-20080215.72.87/23/200811:16556.00258.00379.000.640.520.842.412.244.180.652.444.01NANANA634.750.87NDU3-T1U3-T1Q4-20080225.72.810/20/200810:19599.00563.00591.000.700.550.522.516.277.461.516.247.35NANANA634.750.87NDU3-T1U3-T1Q1-20090235.72.81/28/200912:00675.00247.50204.001.040.750.74-1.533.592.95-0.662.302.48NANANA634.750.87NDU3-T1U3-T2Q2-20080255.72.65/2/200814:441020.00177.00222.000.650.330.470.582.063.530.791.633.00NANANA1013.750.65NDNDNAU3-T2U3-T2Q3-20080265.72.67/23/200813:40997.00285.00364.000.590.520.840.041.722.93-1.022.443.39NANANA1013.750.65NDU3-T2J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 6 of 7See Page 7 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageSAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 (pCi/L)U3-T2Q4-20080275.72.610/20/200810:36928.00597.00590.000.470.500.49-0.474.825.31-5.026.546.06NANANA1013.750.65NDU3-T2U3-T2Q1-20090285.72.61/28/200911:401110.00286.50204.000.600.640.680.712.422.740.412.302.61NANANA1013.750.65NDU3-T2LAF-002Q2-2008009-22.34/10/20080:0046.5084.60144.000.470.300.461.912.143.951.612.464.56NANANAND0.47NDNDNDLAF-002LAF-002Q4-2008010-22.310/17/200810:3281.90155.00174.000.410.790.900.242.763.16-0.033.093.46-4.6120.1023.50ND0.47NDLAF-002 B-1 9Q2-20080054/18/200818:251170.00157.00201.00-0.110.380.7820.003.703.07-0.251.762.97NANANA1170.00ND20.00NDNAB-1 B-6 9Q2-20080054/25/200814:1552.3084.50143.00-0.120.260.53-0.291.963.24-0.753.434.21NANANANDNDNDNDNAB-6U1-CSSQ2-2008006146.14/23/200815:251770.00196.00144.006.740.900.72-1.362.123.20-0.762.083.16NANANA1753.607.35NDNDNDU1-CSSU1-CSSMid-Quarter007146.15/12/200814:05688.00135.00142.004.830.840.932.592.304.250.312.583.96-2.1811.9020.801723.008.48NDU1-CSSU1-CSSMid-Quarter008146.19/8/200810:241450.00377.00498.009.380.940.541.902.073.76NANANANANANA1723.008.48NDU1-CSSU1-CSSQ4-2008009146.111/6/200814:482660.00386.00166.006.741.200.533.526.017.29-1.946.456.6710.2016.5018.501723.008.48NDU1-CSSU1-CSSMid-Quarter010146.111/19/200813:502200.00233.00162.009.081.380.582.354.044.980.864.635.37NANANA1723.008.48NDU1-CSSU1-NCDQ2-20080015/8/20089:459500.00349.00196.00397.002.580.36NANANANANANANANANA5940.00432.0028400.00ND641.00U1-NCDU1-NCDQ4-200800210/15/200812:356190.00371.00161.00435.005.890.33NANANANANANANANANAU1NCDQ12009 0031/12/20091345213000247501920046400890066284000026250012200772372806410041101890U1-NCDQ1-20090031/12/200913:452130.00247.50192.00464.008.900.6628400.002625.0012.200.772.372.80641.0041.1018.90U1-SFDSQ2-20080014/9/20088:55628.00141.00197.009.980.490.43NANANANANANANANANA727.5013.706.39NDNDU1-SFDSU1-SFDSMid-Quarter0025/8/20089:10881.00150.00196.0014.000.520.37NANANANANANANANANA U1-SFDSQ4-200800310/15/200812:451090.00179.00167.0018.501.260.46NANANANANANANANANA U1-SFDSQ1-20090041/14/20099:15311.00181.50193.0012.201.670.826.393.472.221.031.912.277.2616.2018.30Notes:1. For nested multi-level monitoring wells, suffix of well ID indicates depth (rounded to nearest foot) from reference point on casing to bottom of well screen. For Waterloo multi-level systems, suffix indicates depth (rounded to nearest foot) from reference point on casing to top of sampling port. Well IDs without a suffix are open bedrock wellbores.2. All analytical results from the last 12 months from each location are provided. Monitoring locations are sampled quarterly, bi-annually, or annually, and as necessary during the year. 3. Sampling depths within sampling intervals (i.e. location of pump intake) have been located adjacent to a transmissive zone where possible.4. Averages provided are analytical result averages of all valid samples (including mid-quarter and confirmatory samples) collected from each monitoring location from the second quarter of 2008 (Q2-2008) to the first quarter of 2009 (Q1-2009) including post Q1-2009 samples. Monitoring locations are sampled quarterly, bi-annually, or annually and additional samples are collected when necessary. Therefore, some results provided are the average of more than 4 samples. For quarters in which samples were reanalyzed due to potential false positives, both results were used to calculate averages if subsequent results confirmed the validity of the original sample/analysis. For cases in which reanalysis discredited the validity of the original sample result, the replacement results were used to calculate the average. If analytical results resulted in resampling, and the resample result discredited the validity of the original sample result of a particular radionuclide, the original sample results were not used for any radionuclides and only the resample result was used. For cases in which an aliquot of the original sample was reanalyzed, if the result of the aliquot confirmed the original result, then the aliquot result and the original result were averaged and the average of the two was used to calculate the rolling average. If the aliquot result indicated the original result was false, then only the aliquot result was used to calculate the rolling average. 5. NA indicates that the constituent was not analyzed.6. ND indicates that all of the analytical results used to calculate the average were less than MDC and/or 3 times the 1 sigma uncertainty.7. Dot pattern denotes sampling interval is positioned within overburden. Open box indicates sampling interval is in bedrock.8. Due to unexpectedly high levels of Co-60 detected in the original set of the 4th Quarter 2008 samples collected from MW-67-39, a second set of samples were collected and analyzed. Quality control review of the original analysis showed no evidence of error in laboratory analysis or field collection procedures and reanalysis of the original sample confirmed the Co-60 detections. However, historical data and data for the second set of samples showed results below MDC and below three times the 1 sigma uncertainty (not positive) for Co-60 at this interval, suggesting that the first set of results do not appropriately characterize activity at this interval. In addition, results from the NRC split sample of this interval were not positive. Thus, results for the first set of MW67-39 samples during Quarter 4 were not used to calculate yearly averages.9. These locations are storm drains.10. Aliquots from the samples from MW-63-93, MW-63-163 and MW-63-174 were re-analyzed to investigate unexpectedly high Sr-90 results. The re-analyzed samples had results below MDC and below three times the 1 sigma uncertainty (not positive) for Sr-90 at these intervals, suggesting that the first set of results do not appropriately characterize activity at these intervals. Thus, results from the original samples were not used to calculate yearly averages.11. The sample from MW-63-121 was reanalyzed due to unexpected Sr-90 results. The re-analyzed samples confirmed the original results, therefore the average of the original and reanalysis results was used to calculate the rolling averages. 12. Confirmatory samples were collected and analyzed to evaluate the results of the preceding sample.

13. Mid-quarter samples were collected and analyzed to evaluate the potential effect of certain operations on groundwater quality. 14. Due to unexpectedly high levels of Cs-137 detected in the original set of the First Quarter 2009 samples collected from MW-66-21 and MW-67-173, a second set of confirmatory samples were collected and analyzed. The re-analyzed samples had results below MDC and below three times the 1 sigma uncertainty (not positive) for Cs-137 at these intervals, suggesting that the first set of results do not appropriately characterize activity at these intervals. Thus, cesium results from the original samples were not used to calculate yearly averages.J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 7 of 7See Page 7 for Notes TABLE 42009 1ST QUARTER GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERTY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCI.L.

3ResultStd. Dev.MDCI.L.ResultStd. Dev.MDCI.L.ResultStd. Dev.MDCI.L.ResultStd. Dev.MDCI.L.MW-30-690231/30/200911:001.07E+052.51E+031.98E+022.64E+05-8.74E-027.58E-019.73E-012.00E+00-1.13E+002.61E+002.66E+00positive1.06E+002.70E+003.24E+00positiveNANANApositiveMW-30-69MW-30-840141/30/200911:214.69E+035.48E+021.99E+028.57E+039.38E-025.97E-017.19E-012.00E+008.97E+004.34E+003.02E+00positive-8.43E-023.39E+003.81E+00positiveNANANApositiveMW-30-84MW-31-490142/6/200911:051.11E+047.86E+021.99E+021.55E+041.18E-013.00E-013.57E-012.00E+00-1.67E-012.97E+003.35E+00positive-4.61E-012.85E+003.14E+00positiveNANANApositiveMW-31-49MW-31-630142/6/200911:531.28E+048.39E+021.97E+023.69E+046.43E-016.42E-016.82E-012.00E+00-1.32E+003.42E+003.63E+00positive-7.48E-013.86E+004.17E+00positiveNANANApositiveMW-31-63MW-31-850142/6/200911:227.37E+036.54E+022.02E+028.73E+033.89E-015.58E-016.16E-012.00E+001.22E+003.50E+004.06E+00positive1.09E+003.57E+004.23E+00positiveNANANApositiveMW-31-85MW-32-590082/4/200915:461.78E+041.03E+031.98E+021.00E+04-1.01E-015.73E-017.69E-012.00E+001.01E-013.54E+003.41E+00positive2.70E+003.41E+004.34E+00positiveNANANApositiveMW-32-59MW-32-850112/4/200915:496.54E+036.38E+021.98E+021.81E+045.26E-017.76E-018.50E-012.00E+004.88E-012.85E+003.31E+00positive2.27E+003.20E+004.15E+00positiveNANANApositiveMW-32-85MW-32-1490092/4/200913:502.65E+021.18E+021.17E+021.53E+034.53E-016.75E-017.34E-012.00E+005.44E-012.99E+003.38E+00positive3.32E-012.91E+003.28E+00positiveNANANApositiveMW-32-149MW-32-1730072/4/200913:407.56E+021.45E+021.17E+023.27E+032.57E-014.26E-014.74E-012.00E+001.79E+003.65E+004.41E+00positive2.56E+003.47E+004.49E+00positiveNANANApositiveMW-32-173MW-32-1900102/4/200913:452.69E+034.26E+021.98E+021.10E+042.44E-015.57E-016.47E-012.00E+003.60E-022.67E+002.95E+00positive4.71E-013.02E+003.44E+00positiveNANANApositiveMW-32-190MW-36-24 50131/22/200912:482.37E+021.16E+021.06E+022.25E+03-6.26E-017.37E-019.48E-012.00E+005.41E-012.88E+003.34E+00positive3.15E-013.35E+003.82E+00positiveNANANApositiveMW-36-24MW-36-520121/22/200912:596.79E+036.03E+022.06E+022.33E+043.37E+008.99E-016.07E-011.25E+01-6.07E-012.96E+003.24E+00positive1.65E+003.24E+004.05E+00positiveNANANApositiveMW-36-52MW-37-220131/21/200914:275.27E+035.36E+022.05E+029.02E+038.81E+001.33E+006.79E-012.60E+01-3.12E-013.02E+003.27E+00positive-2.03E+003.09E+002.82E+00positiveNANANApositiveMW-37-22MW-37-320131/21/200914:303.76E+034.61E+022.04E+029.87E+031.11E+011.49E+006.27E-013.63E+011.59E+002.84E+003.40E+00positive-7.12E-013.32E+003.49E+00positiveNANANApositiveMW-37-32MW3740 0131/22/20091305491E03513E02200E02116E04347E00885E01569E01226E00264E00378E00327E00 ii267E00314E00408E00 ii NA NA NA iiMW3740Well ID 1SAMPLE IDSAMPLE COLLECTIONANALYSIS RESULTSWell IDTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)MW-37-400131/22/200913:054.91E+035.13E+022.00E+021.16E+043.47E+008.85E-015.69E-012.26E+00-2.64E+003.78E+003.27E+00 positive2.67E+003.14E+004.08E+00 positiveN A N A N A positiveMW-37-40MW-37-570131/21/200914:225.04E+035.21E+022.02E+021.08E+041.99E+011.97E+006.68E-014.94E+013.77E-023.44E+003.80E+00positive1.05E+003.71E+004.35E+00positiveNANANApositiveMW-37-57MW-40-270061/19/200914:291.20E+021.34E+021.48E+021.00E+034.82E-016.36E-016.82E-012.00E+006.25E-013.41E+003.86E+00positive1.46E+002.90E+003.58E+00positive-1.86E+001.80E+012.09E+01positiveMW-40-27MW-40-460071/19/200914:287.76E+011.33E+021.48E+021.00E+032.69E-015.01E-015.67E-012.00E+008.08E-012.88E+003.39E+00positive-1.19E+002.78E+002.88E+00positive-5.63E+001.89E+012.22E+01positiveMW-40-46MW-40-810071/19/200910:381.61E+021.37E+021.48E+021.00E+032.92E-015.76E-016.54E-012.00E+00-4.67E-013.62E+004.01E+00positive-1.41E+003.77E+003.92E+00positive-7.55E+001.77E+012.09E+01positiveMW-40-81MW-40-1000091/19/200911:524.24E+011.30E+021.48E+021.00E+031.06E-016.03E-017.25E-012.00E+006.13E-015.97E+003.85E+00positive1.26E-013.15E+003.61E+00positive-9.80E+001.89E+012.24E+01positiveMW-40-100MW-40-1270091/19/200911:259.22E+011.33E+021.48E+021.00E+03-7.90E-027.19E-019.00E-012.00E+00-1.20E+003.75E+003.94E+00positive1.68E+003.66E+004.45E+00positive-3.34E+001.85E+012.16E+01positiveMW-40-127MW-40-1620071/19/200911:471.07E+021.33E+021.48E+021.00E+031.32E-015.16E-016.16E-012.00E+00-3.98E-013.32E+003.67E+00positive4.22E-012.96E+003.41E+00positive-9.17E+001.85E+012.20E+01positiveMW-40-162MW-42-490151/26/200916:161.28E+033.03E+022.06E+028.21E+036.77E+021.13E+017.44E-011.96E+028.05E+048.01E+032.66E+013.79E+040.00E+005.24E+005.56E+003.38E+019.12E+024.50E+011.90E+018.42E+02MW-42-49MW-42-780111/30/200911:223.65E+022.18E+022.00E+021.02E+034.40E-016.45E-017.03E-012.00E+006.70E-013.32E+003.88E+002.16E+02-1.89E-013.57E+003.99E+00positiveNANANApositiveMW-42-78MW-44-660112/3/20099:402.06E+021.92E+021.97E+021.00E+034.52E-017.98E-018.95E-012.00E+001.96E+003.53E+004.18E+00positive3.09E+003.06E+004.12E+00positiveNANANApositiveMW-44-66MW-44-1020122/2/200912:062.57E+021.94E+021.93E+021.00E+034.66E-016.12E-016.71E-012.00E+009.83E-013.39E+004.02E+00positive-9.65E-013.53E+003.74E+00positiveNANANApositiveMW-44-102MW-45-420152/2/200918:021.41E+033.27E+021.97E+024.02E+03-1.78E-014.41E-016.64E-012.00E+00-1.41E+002.57E+002.67E+00positive-1.27E+002.55E+002.57E+00positiveNANANApositiveMW-45-42MW-45-610152/2/200913:131.36E+033.24E+021.99E+023.97E+03-1.47E-017.61E-019.47E-012.00E+009.93E-013.59E+004.20E+00positive2.30E-013.23E+003.66E+00positiveNANANApositiveMW-45-61MW-460152/5/200913:461.00E+032.88E+021.96E+021.61E+03-1.30E-016.23E-017.82E-012.00E+00-1.68E+002.78E+002.71E+00positive7.02E-012.82E+003.28E+00positiveNANANApositiveMW-46MW-49-260152/6/200913:033.10E+032.66E+021.69E+028.32E+031.38E+011.91E+008.59E-013.63E+011.77E+004.34E+004.54E+00positive1.26E+003.56E+004.24E+00positive2.31E+012.21E+012.42E+01positiveMW-49-26MW-49-420152/6/20099:572.25E+032.40E+021.70E+025.54E+032.07E+012.37E+009.73E-014.80E+011.38E+003.51E+004.09E+00positive-2.43E+003.38E+003.11E+00positive-2.15E+002.15E+012.48E+01positiveMW-49-42MW-49-650152/6/20099:591.42E+032.10E+021.70E+023.30E+031.73E+012.10E+009.15E-014.07E+01-9.15E-012.96E+003.20E+00positive7.61E-012.64E+003.21E+00positive2.70E+002.22E+012.54E+01positiveMW-49-65MW-50-420161/22/200915:232.15E+021.38E+021.48E+021.00E+031.96E+008.06E-016.31E-019.49E+00-1.74E+002.48E+002.37E+00positive-5.18E-012.31E+002.39E+00positive-3.34E+001.74E+012.03E+01positiveMW-50-42MW-50-66 0201/22/200916:01230E+03216E+02148E+02550E+03275E+01228E+00407E-01723E+01-168E+00420E+00399E+00positive-197E-01332E+00366E+00positive-933E+00188E+01223E+01positiveMW-50-66 MW-50-66 0201/22/200916:01 2.30E+03 2.16E+02 1.48E+02 5.50E+03 2.75E+01 2.28E+00 4.07E-01 7.23E+01-1.68E+00 4.20E+00 3.99E+00positive-1.97E-01 3.32E+00 3.66E+00positive-9.33E+00 1.88E+01 2.23E+01positive MW-50-66MW-51-400101/20/200914:502.37E+011.68E+021.92E+021.00E+031.92E-017.95E-019.70E-012.00E+009.89E-012.81E+003.26E+00positive1.05E+002.75E+003.30E+00positive8.95E+001.67E+011.87E+01positiveMW-51-40MW-51-790101/20/200915:211.01E+021.33E+021.48E+021.00E+03-1.71E-013.15E-015.02E-012.00E+005.93E-015.57E+003.65E+00positive-2.94E-013.21E+003.56E+00positive1.58E+011.73E+011.90E+01positiveMW-51-79MW-51-1040081/20/200910:469.95E+011.33E+021.48E+021.00E+039.07E-033.78E-015.04E-012.00E+00-1.33E+002.87E+003.03E+00positive-1.01E+002.37E+002.42E+00positive-2.06E+002.00E+012.33E+01positiveMW-51-104MW-51-1350081/20/200911:021.31E+021.35E+021.48E+021.00E+03-3.04E-013.41E-015.84E-012.00E+00-6.92E-013.89E+004.31E+00positive9.34E-013.06E+003.66E+00positive-1.08E+011.76E+012.10E+01positiveMW-51-135MW-51-1630081/20/200911:444.60E+011.30E+021.48E+021.00E+03-1.98E-014.97E-016.98E-012.00E+00-9.70E-013.14E+003.27E+00positive-7.70E-023.24E+003.54E+00positive-1.01E+011.80E+012.14E+01positiveMW-51-163MW-51-1890081/20/200911:333.32E+011.30E+021.48E+021.00E+03-2.14E-013.45E-015.59E-012.00E+00-2.05E+003.48E+003.62E+00positive1.91E+003.32E+004.20E+00positive-8.33E+001.79E+012.11E+01positiveMW-51-189MW-53-820101/26/200912:004.26E+033.06E+021.92E+021.96E+032.30E+001.07E+009.76E-012.00E+001.10E+003.96E+004.51E+00positive-2.25E-013.59E+003.88E+00positive8.04E+001.64E+011.84E+01positiveMW-53-82MW-53-1200131/26/200912:435.06E+033.26E+021.92E+021.19E+042.64E+012.37E+007.50E-016.38E+01-3.60E-014.53E+005.10E+00positive2.32E+004.34E+005.39E+00positive1.27E+012.22E+012.49E+014.54E+01MW-53-120MW-54-370082/3/200915:341.16E+031.86E+021.64E+022.07E+035.93E+001.16E+006.66E-011.22E+011.70E+003.33E+003.92E+00positive-1.15E+003.24E+003.14E+00positive-3.14E+002.16E+012.50E+01positiveMW-54-37MW-54-580082/3/200914:536.82E+021.71E+021.66E+021.33E+031.98E+008.52E-017.24E-017.37E+009.58E-012.78E+003.29E+00positive4.22E-012.94E+003.39E+00positive-3.05E+001.95E+012.27E+01positiveMW-54-58MW-54-1230082/3/200911:555.31E+021.64E+021.64E+021.21E+035.91E+001.15E+005.70E-011.76E+019.03E-013.03E+003.59E+00positive5.33E-023.09E+003.52E+00positive9.09E-012.00E+012.30E+01positiveMW-54-123MW-54-1440082/3/200912:411.13E+032.03E+021.77E+022.41E+031.44E+011.76E+006.51E-013.42E+01-5.38E-033.15E+003.46E+00positive-2.00E-022.91E+003.20E+00positive2.21E+002.37E+012.76E+01positiveMW-54-144MW-54-1730082/3/200912:191.98E+035.45E+023.85E+023.83E+031.02E+011.45E+005.93E-012.77E+01-1.52E+003.03E+003.08E+00positive-2.37E+003.20E+002.94E+00positive4.01E+002.37E+012.76E+01positiveMW-54-173MW-54-1900082/3/200912:351.43E+034.88E+023.80E+023.39E+031.90E+011.85E+003.85E-014.70E+01-1.18E+003.48E+003.74E+00positive7.39E-013.08E+003.70E+00positive-5.10E+002.37E+012.84E+01positiveMW-54-190MW-55-240092/11/200912:551.04E+034.49E+023.84E+022.19E+031.69E+011.74E+003.85E-014.06E+011.90E+002.88E+003.50E+00positive1.35E+003.14E+003.76E+00positive-1.21E+012.45E+012.99E+01positiveMW-55-24MW-55-350082/4/200913:468.53E+024.28E+023.84E+023.77E+031.71E+011.82E+004.39E-015.75E+011.01E+003.14E+003.69E+00positive1.58E-012.78E+003.15E+00positive8.49E-012.30E+012.69E+01positiveMW-55-35MW-55-540092/4/200912:427.33E+039.09E+023.82E+021.38E+042.11E+012.01E+003.69E-014.61E+01-3.34E-013.11E+003.46E+00positive-3.64E-013.35E+003.69E+00positive5.24E+002.34E+012.70E+01positiveMW-55-54MW-58-260072/3/200912:495.19E+022.36E+021.98E+021.00E+03-8.35E-035.27E-016.83E-012.00E+001.40E+002.76E+003.29E+00positive1.45E-013.09E+003.31E+00positiveNANANApositiveMW-58-26MW-58-650072/3/200912:052.75E+022.03E+021.98E+021.00E+036.60E-018.00E-018.56E-012.00E+00-8.45E-013.21E+003.41E+00 positive1.91E+003.09E+003.89E+00 positiveN A N A N A positiveMW-58-65MW5865 0072/3/200912:052.75E022.03E021.98E021.00E036.60E018.00E018.56E012.00E008.45E013.21E003.41E00positive1.91E003.09E003.89E00positive NA NA NApositiveMW5865MW-60-350082/9/200916:122.00E+021.83E+021.98E+022.00E+033.81E-018.27E-019.42E-012.00E+00-1.20E+003.09E+003.19E+00positive-3.23E-013.00E+003.22E+00positive-3.26E+002.39E+012.82E+01positiveMW-60-35MW-60-530082/9/200911:281.31E+021.79E+021.98E+022.00E+034.81E-018.09E-019.06E-012.00E+00-1.28E+003.80E+003.55E+00positive5.34E-012.78E+003.22E+00positive-1.24E+002.43E+012.85E+01positiveMW-60-53MW-60-720082/9/200911:251.67E+021.55E+021.69E+022.00E+03-4.16E-017.19E-019.60E-012.00E+00-6.54E-013.00E+003.30E+00positive7.83E-013.09E+003.69E+00positive-9.25E+002.24E+012.66E+01positiveMW-60-72MW-60-1350082/9/200912:043.83E+021.67E+021.69E+022.00E+035.52E-015.96E-016.39E-012.00E+001.42E+002.96E+003.48E+00positive4.24E-013.05E+003.35E+00positive3.74E+002.27E+012.58E+01positiveMW-60-135MW-60-1540082/9/200912:234.15E+021.65E+021.67E+022.00E+034.63E-017.98E-018.96E-012.00E+007.14E-013.02E+003.45E+00positive1.01E+003.54E+004.13E+00positive-3.74E+002.09E+012.42E+01positiveMW-60-154MW-60-1760082/9/200913:089.16E+021.91E+021.70E+022.00E+034.25E-016.80E-017.58E-012.00E+00-2.42E-013.27E+003.56E+00positive5.10E-013.29E+003.74E+00positive-1.22E+012.06E+012.44E+01positiveMW-60-176MW-62-180081/23/200911:554.64E+021.39E+021.07E+022.00E+031.09E+006.47E-016.00E-012.00E+009.88E-012.55E+003.06E+00positive-3.42E-012.48E+002.74E+00positiveNANANApositiveMW-62-18MW-62-370081/23/200912:204.87E+021.42E+021.08E+022.00E+031.28E-017.41E-019.02E-012.00E+00-7.69E-013.12E+003.43E+00positive-6.49E-013.14E+003.36E+00positiveNANANApositiveMW-62-37MW-62-530071/23/200912:443.56E+022.16E+022.08E+022.00E+034.53E-017.68E-018.60E-012.00E+002.27E-013.30E+003.77E+00positive-1.27E+003.56E+003.71E+00positiveNANANApositiveMW-62-53MW-62-710081/23/200912:122.99E+022.07E+022.04E+022.00E+032.47E-017.35E-018.56E-012.00E+001.92E+003.53E+004.25E+00positive-4.84E-013.87E+004.22E+00positiveNANANApositiveMW-62-71J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table4_updatedOct19.xlsx; MakeTable4Page 1 of 2See Page 2 for Notes TABLE 42009 1ST QUARTER GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERTY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCI.L.

3ResultStd. Dev.MDCI.L.ResultStd. Dev.MDCI.L.ResultStd. Dev.MDCI.L.ResultStd. Dev.MDCI.L.Well ID 1SAMPLE IDSAMPLE COLLECTIONANALYSIS RESULTSWell IDTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)MW-62-920081/23/200912:285.25E+022.33E+022.05E+022.00E+03-1.59E-016.86E-018.73E-012.00E+002.90E-014.58E+004.83E+00positive1.88E+003.83E+004.74E+00positiveNANANApositiveMW-62-92MW-62-1380081/23/200912:506.26E+022.43E+022.04E+022.00E+032.46E+008.27E-016.23E-012.00E+00-4.23E-012.40E+002.67E+00positive5.99E-012.24E+002.64E+00positiveNANANApositiveMW-62-138MW-62-1820081/23/200913:494.98E+022.28E+022.03E+022.00E+03-1.85E-014.56E-016.98E-012.00E+00-1.91E+002.55E+002.68E+00positive-1.03E+002.43E+002.55E+00positiveNANANApositiveMW-62-182MW-63-180081/29/200913:461.54E+021.85E+021.98E+022.00E+03-2.22E-016.74E-018.57E-012.00E+009.78E-022.64E+003.01E+00positive1.02E+003.20E+003.87E+00positiveNANANApositiveMW-63-18MW-63-340081/29/200912:224.20E+022.22E+021.96E+022.00E+032.20E-016.87E-018.13E-012.00E+001.41E+002.91E+003.45E+00positive-2.64E-012.96E+003.23E+00positiveNANANApositiveMW-63-34MW-63-500081/29/200914:062.98E+022.04E+021.96E+022.00E+035.67E-018.00E-018.76E-012.00E+008.89E-023.09E+003.51E+00positive1.37E+003.41E+004.19E+00positiveNANANApositiveMW-63-50MW-63-930091/29/200914:203.40E+022.09E+021.93E+022.00E+031.18E-016.33E-017.75E-012.00E+00-9.44E-013.17E+003.42E+00positive-8.17E-013.63E+003.88E+00positiveNANANApositiveMW-63-93MW-63-1120081/30/200914:394.37E+022.21E+021.97E+022.00E+032.43E-027.80E-019.24E-012.00E+00-1.10E+002.81E+002.86E+00positive1.77E+003.41E+004.13E+00positiveNANANApositiveMW-63-112MW-63-1210081/30/200914:416.23E+022.42E+021.97E+022.00E+037.30E-015.09E-014.47E-012.00E+001.91E+003.18E+003.92E+00positive9.14E-012.84E+003.45E+00positiveNANANApositiveMW-63-121MW-63-1630081/29/200911:575.81E+022.40E+021.95E+022.00E+032.86E-015.64E-016.42E-012.00E+005.82E+007.23E+003.42E+00positive-1.73E-012.81E+003.03E+00positiveNANANApositiveMW-63-163MW-63-1740081/29/200911:554.92E+022.28E+021.97E+022.00E+034.27E-015.96E-016.57E-012.00E+00-4.53E-013.81E+003.67E+00positive-1.34E+003.29E+003.32E+00positiveNANANApositiveMW-63-174MW-66-21 70071/27/200913:524.61E+021.74E+021.75E+021.54E+032.91E-017.50E-018.72E-012.02E+008.99E+005.45E+003.11E+00positive-1.87E+002.90E+002.71E+00positive1.29E+011.74E+011.93E+01positiveMW-66-21MW-66-360071/27/200913:073.65E+037.62E+024.41E+021.19E+041.22E+011.56E+006.15E-012.71E+01-1.04E+002.88E+003.06E+00positive6.35E-023.27E+003.72E+00positive1.45E+011.70E+011.87E+01positiveMW-66-36MW-67-390081/27/200916:153.67E+032.91E+021.92E+027.48E+031.42E+011.71E+007.62E-013.36E+01-8.03E-012.04E+002.15E+00positive-1.11E-012.06E+002.25E+00positive1.12E+011.68E+011.87E+01positiveMW-67-39MW-67-1050071/27/200916:451.96E+032.42E+021.92E+024.95E+034.08E-018.30E-019.49E-012.14E+00-1.13E+003.32E+002.71E+00 positive-3.40E-022.39E+002.66E+00 positive1.21E+011.64E+011.81E+01 positiveMW-67-105MW-67-173 70071/27/200916:337.57E+022.00E+021.92E+021.90E+034.35E-015.94E-016.32E-012.00E+001.34E+014.85E+002.53E+00positive-1.24E+002.58E+002.73E+00positive1.48E+011.79E+011.96E+01positiveMW-67-173MW-67-2190071/27/200912:349.68E+022.81E+022.50E+022.51E+03-7.56E-025.30E-017.13E-012.00E+00-3.58E-011.89E+002.10E+00positive7.86E-021.83E+002.09E+00positive1.14E+012.16E+012.43E+01positiveMW-67-219MW-67-2760071/27/200913:011.10E+035.12E+024.39E+022.27E+033.32E-015.93E-016.66E-012.00E+002.35E-013.24E+003.70E+00positive-1.19E+003.74E+003.96E+00positive1.15E+011.68E+011.87E+01positiveMW-67-276MW-67-3230071/27/200913:503.65E+021.70E+021.76E+021.00E+03-1.15E-014.05E-015.85E-012.00E+004.74E-013.86E+004.42E+00positive3.47E-013.38E+003.86E+00positive9.84E+001.32E+011.47E+01positiveMW-67-323MW-67-3400071/27/200912:445.23E+024.37E+024.39E+021.11E+032.57E-015.48E-016.31E-012.00E+004.72E-013.72E+004.19E+00positive-4.00E-013.41E+003.67E+00positive7.78E+001.68E+011.90E+01positiveMW-67-340U3-4D0192/10/200914:154.82E+022.31E+021.97E+021.00E+031.00E-015.16E-016.41E-012.00E+003.86E-012.66E+003.00E+00positive7.53E-013.02E+003.39E+00positiveNANANApositiveU3-4DU3-T10231/28/200912:006.75E+022.48E+022.04E+021.28E+031.04E+007.47E-017.44E-012.00E+00-1.53E+003.59E+002.95E+00positive-6.63E-012.30E+002.48E+00positiveNANANApositiveU3-T1U3-T20281/28/200911:401.11E+032.87E+022.04E+022.14E+036.04E-016.41E-016.75E-012.00E+007.10E-012.42E+002.74E+00positive4.09E-012.30E+002.61E+00positiveNANANApositiveU3-T2U1-NCD0031/12/200913:452.13E+032.48E+021.92E+021.00E+034.64E+028.90E+006.61E-012.00E+002.84E+042.63E+031.22E+01positive7.66E-012.37E+002.80E+00positive6.41E+024.11E+011.89E+01positiveU1-NCDU1-SFDS0041/14/20099:153.11E+021.82E+021.93E+021.00E+031.22E+011.67E+008.15E-012.00E+006.39E+003.47E+002.22E+00positive1.03E+001.91E+002.27E+00positive7.26E+001.62E+011.83E+01positiveU1-SFDS Notes:1. For nested multi-level monitoring wells, suffix of well ID indicates depth (rounded to nearest foot) from reference point on casing to bottom of well screen. For Waterloo multi-level systems, suffix indicates depth (rounded to nearest foot) from reference point on casing to top of sampling port. Well IDs without a suffix are open bedrock wellbores.

2. Sampling depths within sampling intervals (location of pump intake) have been established at location of most transmissive zone to the extent possible.3. I.L.s (Investigation Levels) are predetermined detection limits assigned to each sampling location which, if reached or exceeded, require further investigation or action. I.L.s presented here are established for 2009 based on 2008 averages. Positive detections indicate that the the result is greater than MDC and greater than or equal to 3 times the 1 sigma uncertainty.
4. NA indicates that the constituent was not analyzed.5DotpatterndenotessamplingintervalispositionedwithinoverburdensoilsOpenboxindicatessamplingintervalisinbedrock
5. Dot pattern denotes sampling interval is positioned within overburden soils. Open box indicates sampling interval is in bedrock.6. Shading indicates that the sample result exceeds the Investigation Level.
7. Due to unexpectedly high levels of Cs-137 detected in the original set of the First Quarter 2009 samples collected from MW-66-21 and MW-67-173, a second set of samples were collected and analyzed. The re-analyzed samples had results below MDC and below three times the 1 sigma uncertainty (not positive) for Cs-137 at these intervals, suggesting that the first set of results do not appropriately characterize activity at these intervals. J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table4_updatedOct19.xlsx; MakeTable4Page 2 of 2See Page 2 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCMW-30-6900169.36.41/30/200615:402.37E+052.76E+046.26E+02 NA 3NANANANANANANANANANANAMW-30-6900369.36.46/23/200610:503.92E+053.35E+046.02E+033.34E-028.24E-011.09E+002.96E+011.40E+011.14E+014.23E+009.93E+001.14E+011.02E+011.27E+011.36E+0100469.36.48/18/200614:452.20E+054.20E+031.10E+038.14E-011.40E+001.52E+00-7.33E+001.40E+011.41E+013.91E+001.51E+011.78E+01NANANA 00569.36.411/29/200610:451.06E+051.86E+035.30E+022.50E+008.40E-018.10E-013.13E+033.30E+015.00E+001.20E+002.28E+002.50E+001.15E+011.26E+011.40E+0100669.36.41/16/200714:058.17E+048.73E+036.34E+02-1.60E-011.47E+001.60E+000.00E+002.10E+002.40E+00-4.30E-012.07E+002.50E+007.07E+001.94E+012.20E+0100769.36.46/12/200710:202.97E+058.73E+036.34E+02-2.63E-014.19E-016.45E-013.93E-013.75E+004.09E+006.88E-024.08E+003.94E+00NANANA 00869.36.47/18/20079:558.21E+042.46E+037.00E+02NANANANANANANANANANANANA 01069.36.48/1/200711:441.03E+053.09E+036.40E+02NANANANANANANANANANANANA 01169.36.48/8/200710:009.96E+042.99E+036.32E+02NANANANANANANANANANANANA 01269.36.48/15/200711:002.33E+056.99E+036.33E+02NANANANANANANANANANANANA 01369.36.48/21/20079:451.07E+053.21E+037.05E+02NANANANANANANANANANANANA 01469.36.48/30/200711:329.80E+042.94E+037.03E+02NANANANANANANANANANANANA 01569.36.49/19/200711:009.20E+042.76E+037.02E+02NANANANANANANANANANANANA 01669.36.410/23/200711:481.32E+053.90E+034.24E+022.52E-016.16E-017.12E-012.42E+005.76E+004.45E+00-5.09E-013.66E+003.86E+00NANAN A 017693 64 2/4/200813:00187E+05551E+03395E+02157E01698E01857E01126E+00305E+00356E+00600E01363E+00328E+00 NA NA NAWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION 017 69.3 6.4 2/4/2008 13: 00 1.87E+05 5.51E+03 3.95E+02 1.57E-01 6.98E-01 8.57E-01 1.26E+00 3.05E+00 3.56E+00-6.00E-01 3.63E+00 3.28E+00 NA NA NA01869.36.45/6/200811:001.53E+053.01E+034.06E+023.34E-013.98E-016.71E-014.94E-011.83E+003.21E+00-5.70E-011.71E+002.73E+00NANANA01969.36.46/6/200811:017.36E+042.02E+035.06E+022.02E-013.20E-015.59E-01-9.82E-012.10E+003.27E+004.91E-012.24E+003.85E+00NANANA 02069.36.48/5/200811:221.99E+053.92E+034.95E+022.09E-013.07E-015.34E-01-1.57E-011.42E+002.38E+001.11E+001.28E+002.33E+00NANANA 02169.36.49/3/200811:298.53E+042.03E+035.50E+02-3.12E-015.12E-019.72E-01-1.89E+002.22E+003.36E+00NANANANANANA 02269.36.411/7/200810:279.55E+042.85E+033.06E+024.09E-015.53E-016.01E-017.83E-013.09E+003.66E+00-1.07E-012.65E+002.85E+00NANANA 02369.36.41/30/200911:001.07E+052.51E+031.98E+02-8.74E-027.58E-019.73E-01-1.13E+002.61E+002.66E+001.06E+002.70E+003.24E+00NANAN AMW-30-8400183.8-8.18/22/200613:151.25E+042.43E+031.61E+03-1.60E-019.82E-011.13E+001.88E+001.09E+011.24E+01-2.52E+001.00E+011.03E+01NANANAMW-30-8400283.8-8.111/29/200614:301.01E+041.59E+031.10E+03-9.40E-017.80E-018.70E-012.94E+021.68E+015.00E+00-3.00E-013.90E+004.80E+004.10E+001.17E+011.30E+0100383.8-8.11/17/20079:457.33E+037.50E+025.30E+024.80E-011.50E+001.60E+001.18E+002.61E+002.90E+000.00E+002.91E+003.40E+00 00483.8-8.16/12/200710:197.79E+039.47E+024.42E+02-1.49E-014.44E-016.41E-01-1.06E+002.29E+002.41E+00-6.93E-012.38E+002.54E+00-3.57E+001.74E+012.03E+0100583.8-8.17/18/200710:254.80E+037.20E+027.00E+02NANANANANANANANANANANANA 00683.8-8.17/25/200713:005.02E+034.49E+022.43E+021.56E-013.09E-013.48E-012.83E+003.38E+002.84E+002.03E+002.91E+003.57E+00NANANA 00783.8-8.110/23/200712:494.27E+037.38E+024.03E+025.95E-015.53E-015.59E-011.56E+002.81E+003.38E+00-1.17E+003.72E+003.27E+00NANA NA00883.8-8.12/4/200814:164.34E+032.61E+021.32E+02-4.08E-014.55E-017.47E-01-1.00E+002.55E+002.73E+00-4.32E-012.97E+002.79E+00NANA NA00983.8-8.15/6/200813:404.18E+032.83E+022.20E+023.26E-013.86E-016.51E-014.43E-012.37E+004.00E+00-1.91E+002.53E+003.69E+00NANANA 01083.8-8.16/6/200812:103.85E+035.33E+025.04E+021.54E-012.46E-014.34E-01-8.97E-012.16E+003.57E+002.05E+002.31E+004.29E+00NANANA 02083.8-8.18/5/200814:404.31E+032.28E+021.94E+022.77E-012.86E-014.67E-01-1.87E-011.44E+002.35E+00-1.04E-012.12E+002.66E+00NANAN A02183.8-8.19/3/200811:593.78E+035.13E+025.35E+02-4.62E-024.61E-019.06E-01-3.02E-011.73E+002.89E+02NANANANANANA 01383.8-8.111/7/200810:505.25E+033.23E+021.64E+021.07E-025.75E-017.61E-016.64E-014.63E+005.37E+002.13E+005.34E+006.53E+00NANANA 01483.8-8.11/30/200911:214.69E+035.48E+021.99E+029.38E-025.97E-017.19E-018.97E+004.34E+003.02E+00-8.43E-023.39E+003.81E+00NANAN A MW-31-49 001488268 11/27/200611:45298E+02174E+02170E+02000E+00129E+00140E+00 NA NA NA130E+00360E+00400E+00142E+02165E+02180E+02 MW-31-49 MW-31-49 001 48.8 26.8 11/27/200611:45 2.98E+02 1.74E+02 1.70E+02 0.00E+00 1.29E+00 1.40E+00 NA NA NA 1.30E+00 3.60E+00 4.00E+00 1.42E+02 1.65E+02 1.80E+02 MW-31-4900248.826.81/18/20079:131.20E+035.70E+025.30E+023.00E-011.62E+001.80E+00NANANA-2.10E+008.10E+009.50E+00NANANA00348.826.86/12/200714:241.48E+035.24E+024.37E+02-1.51E-015.49E-017.52E-011.83E-012.12E+002.35E+001.26E-012.01E+002.26E+000.00E+001.11E+011.29E+0100448.826.88/2/200710:231.19E+041.27E+035.43E+02-5.17E-017.89E-019.55E-018.83E+011.35E+013.31E+001.80E-013.63E+004.11E+00NANANA 00548.826.89/11/200713:106.98E+033.27E+021.59E+02-2.26E-014.23E-016.01E-01-1.20E+003.04E+003.24E+000.00E+004.96E+004.75E+00NANA NA00648.826.810/24/200715:508.77E+039.99E+024.00E+025.14E-024.26E-015.36E-01-6.76E-013.94E+003.57E+001.35E+003.21E+003.52E+00NANA NA00748.826.81/16/200810:313.97E+021.94E+021.77E+02-9.14E-026.86E-018.97E-01-1.17E+004.74E+005.07E+00-9.76E-014.41E+004.65E+00NANANA00948.826.86/6/200815:053.04E+041.34E+034.69E+022.83E-013.39E-015.72E-011.11E+001.93E+003.47E+001.72E+002.01E+003.82E+00NANANA 01048.826.88/7/200812:435.94E+021.33E+021.92E+022.39E-012.67E-014.43E-017.07E-011.30E+002.23E+007.08E-011.49E+002.56E+00NANANA 01148.826.88/30/200811:551.36E+048.61E+025.53E+024.16E-014.80E-018.06E-011.27E+003.63E+003.09E+00NANANANANANA 01248.826.810/30/200811:306.43E+022.25E+021.71E+027.64E-021.71E-011.93E-011.39E+006.27E+007.25E+00-9.09E-016.40E+006.88E+00NANA NA01348.826.811/18/200811:157.77E+021.79E+021.62E+024.11E-016.30E-016.97E-011.21E+004.18E+005.03E+009.78E-014.93E+005.84E+00NANAN A01448.826.82/6/200911:051.11E+047.86E+021.99E+021.18E-013.00E-013.57E-01-1.67E-012.97E+003.35E+00-4.61E-012.85E+003.14E+00NANAN AMW-31-6300163.312.311/27/200612:106.89E+031.44E+031.10E+035.30E-011.26E+001.40E+001.99E+029.60E+003.60E+006.80E-012.94E+003.40E+004.10E+011.17E+021.30E+02MW-31-6300263.312.31/18/20079:251.41E+049.00E+025.20E+02-6.50E-011.50E+001.70E+00-4.00E-013.00E+003.50E+00-4.50E-012.91E+003.50E+00NANA NA00363.312.36/12/200714:205.00E+037.85E+024.38E+024.72E-016.36E-016.78E-01-5.01E-011.92E+002.09E+00-8.78E-021.97E+002.20E+003.37E+001.89E+012.17E+0100463.312.38/2/200711:154.06E+042.27E+035.53E+02-1.41E-017.84E-019.53E-011.20E+003.56E+004.18E+00-3.09E-024.41E+004.23E+00NANAN A00563.312.39/11/200713:253.77E+041.13E+032.20E+02-1.37E-014.52E-016.15E-01-4.39E-013.51E+003.80E+00-8.64E-013.92E+003.44E+00NANANA00663.312.310/24/200714:553.58E+041.94E+034.00E+02-1.63E-014.58E-016.34E-011.07E+005.31E+004.01E+001.01E+003.40E+004.11E+00NANA NA00763.312.31/16/200811:321.24E+047.35E+021.80E+02-6.88E-025.34E-017.44E-01-2.49E-014.04E+004.40E+00-9.08E-014.19E+004.32E+00NANANA00963.312.36/6/200816:161.02E+047.92E+025.04E+021.44E-013.40E-016.17E-01-1.15E+002.11E+003.36E+002.47E+002.31E+004.45E+00NANANA 01063.312.3 8/7/200811:221.76E+044.17E+021.94E+02-2.12E-012.61E-015.89E-01-1.86E-011.28E+002.16E+003.73E-011.43E+002.49E+00 NA NA NA 010 63.3 12.3 8/7/200811:22 1.76E+04 4.17E+02 1.94E+02-2.12E-01 2.61E-01 5.89E-01-1.86E-01 1.28E+00 2.16E+00 3.73E-01 1.43E+00 2.49E+00 NA NA NA01163.312.38/30/200812:342.21E+041.07E+035.49E+02-6.34E-014.35E-019.79E-013.76E-012.35E+004.04E+00NANANANANANA 01263.312.310/30/200812:142.30E+041.08E+031.73E+022.28E-012.33E-012.52E-012.21E+006.18E+007.37E+00-1.47E+007.26E+007.77E+00NANA NA01363.312.311/18/200811:582.55E+048.07E+021.84E+023.95E-017.40E-018.36E-011.02E-025.89E+006.01E+00-5.18E-016.54E+006.97E+00NANA NA01463.312.32/6/200911:531.28E+048.39E+021.97E+026.43E-016.42E-016.82E-01-1.32E+003.42E+003.63E+00-7.48E-013.86E+004.17E+00NANAN AMW-31-8500184.8-9.211/27/200612:204.62E+021.74E+021.70E+021.50E-011.44E+001.60E+001.52E+028.40E+003.20E+002.10E-012.19E+002.50E+002.20E+019.30E+011.00E+02MW-31-8500284.8-9.21/18/20079:162.66E+036.00E+025.20E+02-5.90E-011.59E+001.80E+00-4.90E+008.70E+001.00E+01-6.00E-018.70E+001.00E+018.35E+002.11E+012.39E+0100384.8-9.26/12/200714:053.17E+021.62E+021.69E+02-3.83E-016.62E-019.31E-013.95E-012.76E+001.91E+00-5.71E-011.69E+001.83E+00NANA NA00484.8-9.28/2/200710:582.69E+037.11E+025.31E+02-7.29E-016.31E-019.31E-01-5.01E-023.29E+003.59E+00-1.90E+003.35E+003.31E+00NANA NA00584.8-9.29/11/200713:204.32E+033.32E+021.82E+026.86E-017.48E-017.93E-01-7.04E-013.04E+003.26E+00-3.07E+003.68E+003.24E+00NANA NA00684.8-9.210/24/200714:405.51E+038.15E+023.98E+022.53E-014.08E-014.51E-015.68E-012.90E+003.38E+004.76E-012.75E+003.19E+00NANAN A00784.8-9.21/16/200811:261.31E+032.81E+021.84E+026.97E-017.67E-017.79E-012.68E+004.05E+004.83E+001.90E+003.80E+004.62E+00NANANA 00984.8-9.26/6/200815:265.95E+036.30E+025.05E+021.52E-013.17E-015.69E-01-8.07E-012.20E+003.45E+001.91E+002.45E+004.58E+00NANANA 01084.8-9.28/7/200811:132.30E+031.83E+021.94E+021.07E-012.87E-015.30E-01-6.47E-011.22E+001.94E+001.63E-021.31E+002.18E+00NANANA01184.8-9.28/30/200812:088.34E+037.00E+025.52E+024.46E-014.87E-018.10E-01-5.50E-011.86E+003.07E+00NANANANANANAJ:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 1 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION01284.8-9.210/30/200812:093.89E+034.52E+021.67E+024.08E-017.33E-018.25E-01-5.63E+006.17E+004.73E+00-4.82E+006.98E+006.56E+00NANANA01384.8-9.211/18/200812:004.41E+032.97E+021.61E+02-2.44E-015.37E-018.11E-012.13E+003.79E+004.76E+002.84E+003.82E+005.19E+00NANA NA01484.8-9.22/6/200911:227.37E+036.54E+022.02E+023.89E-015.58E-016.16E-011.22E+003.50E+004.06E+001.09E+003.57E+004.23E+00NANANAMW-32-590016017.11/19/20079:307.67E+037.50E+025.20E+026.30E-011.47E+001.60E+00-8.60E-011.98E+002.30E+004.90E-012.28E+002.60E+00NANANAMW-32-590026017.16/28/200714:252.40E+047.37E+021.97E+02-1.65E-015.90E-017.97E-01-1.74E+003.51E+003.30E+00-1.42E+003.87E+003.34E+00NANAN A0036017.18/13/200713:071.42E+046.00E+021.99E+02-2.71E-015.58E-017.58E-011.48E+002.10E+003.22E+00-4.66E-013.30E+003.65E+00NANANA 00158.818.310/26/200712:071.11E+044.61E+021.84E+023.22E-016.43E-017.36E-01-1.94E-013.82E+003.87E+002.45E+003.06E+004.08E+00NANA NA00258.818.31/18/200813:251.87E+049.11E+021.86E+024.67E-016.96E-017.57E-019.98E-014.25E+004.79E+001.99E+003.81E+004.65E+00NANANA 00358.818.35/5/200815:334.15E+032.01E+021.82E+027.61E-025.20E-019.70E-01-7.05E-011.89E+003.05E+001.25E+002.01E+003.77E+00NANANA 00458.818.36/9/200812:102.85E+034.81E+025.06E+02-3.39E-013.64E-017.61E-01-1.22E+001.94E+002.98E+00-7.10E-012.43E+003.91E+00NANA NA00558.818.37/31/200813:231.54E+031.63E+021.94E+021.72E-013.81E-016.90E-014.66E-011.97E+003.33E+00-1.08E+002.48E+003.26E+00NANAN A00658.818.39/2/200813:522.44E+034.59E+025.53E+022.19E-015.54E-019.94E-017.77E-011.85E+003.21E+00NANANANANANA 00758.818.310/24/200813:594.13E+022.00E+021.73E+021.63E-016.06E-017.44E-01-3.50E-017.51E+007.30E+00-1.32E+006.29E+006.66E+00NANANA00858.818.32/4/200915:461.78E+041.03E+031.98E+02-1.01E-015.73E-017.69E-011.01E-013.54E+003.41E+002.70E+003.41E+004.34E+00NANANA MW-32-85 001905-134 1/19/20079:40112E+04840E+02530E+02320E-01147E+00160E+00157E+00282E+00310E+00900E-01420E+00480E+00 NA NA NA MW-32-85 MW-32-85 001 90.5-13.4 1/19/20079:40 1.12E+04 8.40E+02 5.30E+02 3.20E-01 1.47E+00 1.60E+00 1.57E+00 2.82E+00 3.10E+00 9.00E-01 4.20E+00 4.80E+00 NA NA NA MW-32-8500290.5-13.46/28/200715:055.42E+033.77E+021.95E+02-4.15E-015.10E-016.75E-01-1.70E-012.77E+003.03E+00-3.05E-013.19E+003.21E+00NANANA00390.5-13.48/13/200710:485.70E+034.05E+022.01E+02-2.45E-024.47E-015.75E-013.28E-012.81E+003.15E+009.90E-012.98E+003.53E+00NANA NA00485.385.310/26/200711:121.26E+044.79E+021.79E+02-1.17E-014.27E-016.25E-018.85E-012.97E+003.45E+00-1.85E-023.23E+003.63E+00NANANA00585.385.31/18/200814:501.07E+046.90E+021.83E+02-3.03E-014.38E-017.35E-013.57E-012.64E+002.67E+00-5.37E-011.97E+002.13E+00NANA NA00685.385.35/5/200814:108.36E+032.64E+021.81E+02-6.65E-023.89E-017.59E-011.95E+002.16E+003.96E+00-3.64E-012.06E+003.27E+00NANAN A00785.385.36/9/200812:251.11E+048.21E+025.04E+02-9.56E-023.57E-017.12E-011.39E+002.01E+003.68E+00-5.47E-012.04E+003.34E+00NANAN A00885.385.37/31/200814:357.48E+032.83E+021.93E+021.16E-013.35E-016.24E-012.14E-012.06E+003.50E+001.07E+001.88E+003.43E+00NANANA 00985.385.39/2/200814:408.05E+036.90E+025.52E+021.42E-014.15E-017.65E-01-1.37E+002.45E+003.52E+00NANANANANANA 01085.385.310/24/200814:508.62E+036.66E+021.72E+021.13E-014.56E-015.68E-011.39E+005.78E+006.62E+003.08E+005.89E+007.32E+00NANAN A01185.385.32/4/200915:496.54E+036.38E+021.98E+025.26E-017.76E-018.50E-014.88E-012.85E+003.31E+002.27E+003.20E+004.15E+00NANANAMW-32-131001138-60.91/19/20079:451.13E+048.40E+025.30E+02-1.03E+001.47E+001.70E+00-6.00E-022.04E+002.30E+003.00E-022.07E+002.40E+00NANANAMW-32-131002138-60.96/28/200712:453.02E+021.88E+021.97E+02-1.39E-015.13E-015.94E-01-1.46E+005.09E+004.92E+009.88E-013.76E+004.38E+00NANA NA003138-60.98/13/200711:151.29E+021.70E+021.87E+022.69E-017.33E-018.51E-01-8.09E-014.86E+004.85E+00-1.19E+003.29E+003.22E+00NANA NA004130.8-53.710/26/200710:113.74E+022.39E+022.42E+022.47E-016.03E-017.06E-01-1.81E-013.48E+003.82E+00-2.55E-013.92E+003.99E+00NANANA005130.8-53.71/18/200811:235.04E+022.07E+021.79E+025.14E-017.79E-018.52E-018.47E-012.19E+002.21E+00-8.40E-021.98E+002.18E+00NANANA006130.8-53.75/5/200812:351.03E+031.36E+021.83E+02-2.89E-013.98E-017.75E-01-1.21E+002.28E+003.55E+00-3.26E-012.27E+003.66E+00NANANAMW-32-149001163-85.91/19/20079:501.05E+048.70E+025.70E+02NANANANANANANANANANANANAMW-32-149002163-85.96/28/200713:065.81E+022.03E+021.97E+02-2.82E-017.33E-019.70E-018.54E-012.85E+002.94E+00-8.16E-012.46E+002.60E+00NANA NA003163-85.98/13/200711:354.93E+022.09E+022.08E+02-6.38E-013.81E-016.52E-01-1.42E+003.76E+003.37E+001.63E+001.69E+002.91E+00NANA NA004149.3-72.210/26/200710:102.92E+032.94E+021.90E+02-2.45E-014.89E-017.22E-011.99E-013.10E+003.51E+001.65E-013.56E+003.99E+00NANANA005149.3-72.21/18/200811:181.15E+032.69E+021.85E+023.04E-018.25E-019.53E-012.94E+004.29E+003.08E+00-8.74E-012.82E+002.93E+00NANANA 005 149.3 72.2 1/18/200811:18 1.15E+03 2.69E+02 1.85E+02 3.04E01 8.25E01 9.53E01 2.94E+00 4.29E+00 3.08E+00 8.74E01 2.82E+00 2.93E+00 NA NA NA006149.3-72.25/5/200810:548.83E+021.31E+021.82E+027.39E-015.05E-017.94E-01-2.99E+002.67E+003.71E+002.04E+002.12E+004.12E+00NANA NA007149.3-72.27/31/200811:105.32E+021.31E+021.94E+021.38E-023.46E-016.80E-011.06E+001.65E+002.87E+001.42E+001.56E+002.81E+00NANA NA008149.3-72.210/24/200810:285.03E+022.10E+021.72E+024.69E-016.52E-016.99E-011.80E+005.22E+006.07E+001.25E+004.96E+005.82E+00NANANA009149.3-72.22/4/200913:502.65E+021.18E+021.17E+024.53E-016.75E-017.34E-015.44E-012.99E+003.38E+003.32E-012.91E+003.28E+00NANAN AMW-32-173001172.8-95.710/26/20079:555.89E+033.87E+021.92E+021.86E-025.87E-017.54E-016.92E-013.00E+003.51E+00-9.97E-012.91E+003.02E+00NANANAMW-32-173002172.8-95.71/18/200811:053.40E+034.07E+021.82E+021.13E-016.02E-017.63E-01-3.84E-012.00E+002.18E+00-6.14E-012.09E+002.25E+00NANANA003172.8-95.75/5/200810:331.69E+031.52E+021.82E+021.11E-023.53E-017.09E-011.95E-012.18E+003.64E+005.47E-012.24E+003.91E+00NANAN A004172.8-95.77/31/200810:521.08E+031.48E+021.92E+026.80E-014.52E-017.11E-01-1.17E+001.58E+002.47E+006.06E-011.65E+002.96E+00NANANA005172.8-95.79/2/200811:309.72E+023.72E+025.48E+021.85E-014.64E-018.41E-01-1.02E+002.67E+003.88E+00NANANANANANA 006172.8-95.710/24/200810:251.03E+032.67E+021.74E+021.05E-013.60E-014.36E-018.63E-015.67E+006.61E+002.30E+006.36E+007.74E+00NANANA007172.8-95.72/4/200913:407.56E+021.45E+021.17E+022.57E-014.26E-014.74E-011.79E+003.65E+004.41E+002.56E+003.47E+004.49E+00NANAN AMW-32-190001194.5-117.41/19/20079:551.13E+048.40E+025.20E+024.20E-011.50E+001.70E+002.60E-011.26E+001.40E+007.10E-011.50E+001.70E+00NANANAMW-32-190002194.5-117.46/28/200713:072.41E+032.72E+021.87E+02-5.09E-026.12E-018.20E-011.52E+003.07E+003.64E+00-1.29E+003.27E+003.37E+00NANANA003194.5-117.48/13/200711:251.72E+032.67E+022.03E+02-3.65E-018.12E-011.04E+006.21E-012.49E+002.93E+00-1.19E+002.38E+002.39E+00NANANA004190.3-113.710/26/20079:539.76E+034.80E+021.93E+02-5.05E-017.75E-019.73E-01-6.17E-013.07E+003.27E+00-1.94E-013.18E+003.57E+00NANANA005190.3-113.71/18/200811:358.89E+036.32E+021.83E+024.28E-017.73E-018.69E-016.57E-011.71E+002.02E+005.18E-011.65E+001.96E+00NANANA006190.3-113.75/5/200810:576.73E+032.41E+021.82E+02-1.68E-014.28E-018.16E-01-1.18E+002.08E+003.24E+00-2.62E+003.16E+002.97E+00NANANA007190.3-113.77/31/200811:244.71E+032.35E+021.94E+023.21E-013.35E-015.51E-01-8.54E-011.55E+002.53E+002.22E+001.77E+003.30E+00NANANA008190.3-113.79/2/200811:403.81E+035.20E+025.44E+025.92E-015.81E-019.53E-011.39E+002.82E+004.63E+00NANANANANANA 009190.3-113.710/24/200810:313.35E+034.31E+021.73E+023.30E-035.75E-017.41E-015.89E-015.33E+005.98E+003.85E+005.68E+007.16E+00NANANA010190.3-113.72/4/200913:452.69E+034.26E+021.98E+022.44E-015.57E-016.47E-013.60E-022.67E+002.95E+004.71E-013.02E+003.44E+00NANA NAMW-3300119.2-0.412/15/20058:001.42E+054.26E+037.00E+02NANANANANANANANANANANANAMW-3300219.2-0.412/19/200511:381.99E+055.97E+037.00E+02NANANANANANANANANANANANA00319.2-0.412/29/200511:302.20E+056.60E+037.00E+02NANANANANANANANANANANANA 00419.2-0.41/6/200612:301.89E+055.67E+037.00E+02NANANANANANANANANANANANA 00519.2-0.41/13/200612:102.32E+056.96E+037.00E+02NANANANANANANANANANANANA 00619.2-0.41/20/200610:402.26E+056.78E+037.00E+02NANANANANANANANANANANANA 00719.2-0.41/27/200611:102.42E+057.26E+037.00E+02NANANANANANANANANANANANA 00819.2-0.42/3/200612:152.50E+052.84E+046.33E+02NANANANANANANANANANANANA 00919.2-0.42/7/200616:002.14E+052.64E+046.37E+021.36E-015.06E-016.25E-01NANANANANANANANANA 01019.2-0.42/16/200613:552.61E+052.91E+046.36E+02NANANANANANANANANANANANA 01119.2-0.43/3/200610:202.53E+057.59E+037.00E+02NANANANANANANANANANANANA 01219.2-0.44/7/200610:252.21E+056.63E+037.00E+02NANANANANANANANANANANANA 01419.2-0.45/17/200612:501.35E+052.01E+041.60E+037.79E-011.43E+001.47E+001.17E+011.19E+011.37E+014.62E+001.41E+011.28E+01NANANA01519.2-0.46/7/200610:151.41E+051.85E+041.32E+036.74E-015.63E-016.44E-016.95E-018.72E+009.58E+00-6.11E+008.63E+008.02E+00NANANAJ:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 2 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION01719.2-0.47/3/20069:502.64E+052.01E+043.85E+034.78E-011.37E+001.57E+00-6.85E-011.17E+011.27E+01-5.24E+001.28E+011.21E+01NANANA01819.2-0.48/4/20068:151.84E+052.54E+041.87E+03NANANA3.53E+006.31E+007.84E+00-1.14E+007.35E+008.60E+00NANANA01919.2-0.48/30/200613:001.15E+051.77E+044.39E+03NANANA-6.99E-018.47E+008.90E+003.71E+007.21E+009.60E+00NANANA 02019.2-0.46/15/200715:489.06E+043.26E+033.61E+02-2.82E-012.86E-014.85E-01-2.78E-013.82E+003.76E+00-1.64E+003.44E+003.39E+00-8.12E-011.16E+011.37E+0102119.2-0.48/3/200710:202.30E+047.08E+022.04E+025.80E-018.49E-019.33E-018.18E-012.37E+002.83E+002.45E-012.13E+002.46E+00NANANA 02219.2-0.44/28/200815:005.85E+041.16E+032.58E+021.69E-012.97E-015.22E-011.08E-011.87E+003.12E+00-4.51E-022.12E+003.49E+00NANAN A02319.2-0.49/4/200814:416.80E+041.82E+035.47E+021.33E-014.05E-017.55E-015.46E-011.61E+002.83E+00NANANANANANAMW-3400118.9-0.412/13/200513:536.39E+041.92E+037.00E+02NANANANANANANANANANANANAMW-3400218.9-0.412/19/200510:351.21E+053.63E+037.00E+02NANANANANANANANANANANANA00318.9-0.412/29/200510:501.47E+054.41E+037.00E+02NANANANANANANANANANANANA 00418.9-0.41/6/200611:351.59E+054.77E+037.00E+02NANANANANANANANANANANANA 00518.9-0.41/13/200611:401.31E+053.93E+037.00E+02NANANANANANANANANANANANA 00618.9-0.41/20/200610:002.11E+056.33E+037.00E+02NANANANANANANANANANANANA 00718.9-0.41/27/200610:502.12E+056.36E+037.00E+02NANANANANANANANANANANANA 008189-04 2/3/200612:20224E+05269E+04633E+02 NA NA NA NA NA NA NA NA NA NA NA NA 008 18.9-0.4 2/3/200612:20 2.24E+05 2.69E+04 6.33E+02 NA NA NA NA NA NA NA NA NA NA NA NA00918.9-0.42/7/200615:151.74E+052.38E+046.37E+029.22E-023.78E-014.67E-01NANANANANANANANANA 01018.9-0.42/16/200613:551.99E+052.55E+046.36E+02NANANANANANANANANANANANA 01118.9-0.43/3/20069:352.30E+056.90E+037.00E+02NANANANANANANANANANANANA 01218.9-0.44/7/200610:052.76E+058.28E+037.00E+02NANANANANANANANANANANANA 01318.9-0.45/17/200613:153.64E+045.52E+038.35E+022.50E-026.63E-019.24E-017.84E+001.39E+011.55E+012.72E+001.31E+011.44E+01NANANA 01418.9-0.46/26/200610:201.05E+048.52E+023.41E+023.71E-016.49E-017.79E-011.83E+007.85E+008.96E+005.84E+007.34E+009.37E+00NANANA 01518.9-0.47/26/200610:204.07E+043.51E+031.57E+032.18E-018.97E-011.16E+00-1.73E-014.87E+005.24E+00-2.54E-015.64E+006.78E+00NANA NA01618.9-0.48/24/200612:186.69E+041.05E+043.39E+03NANANA1.62E+005.81E+006.78E+00-1.60E+005.89E+005.85E+00NANANA 01718.9-0.49/21/20069:451.61E+042.78E+035.86E+020.00E+001.12E+001.31E+006.09E-021.69E+001.85E+00-2.10E-011.65E+001.79E+00NANANA 01818.9-0.48/3/200710:212.22E+047.44E+022.13E+023.94E-027.08E-019.04E-01-1.55E+004.53E+004.44E+002.12E+003.40E+004.01E+00NANANAMW-3500119-0.412/13/200513:504.23E+043.18E+037.00E+02NANANANANANANANANANANANAMW-3500219-0.412/19/200510:177.60E+042.28E+037.00E+02NANANANANANANANANANANANA00319-0.412/29/200510:008.05E+042.42E+037.00E+02NANANANANANANANANANANANA 00419-0.41/6/200611:109.54E+042.86E+037.00E+02NANANANANANANANANANANANA 00519-0.41/13/200610:509.78E+042.93E+037.00E+02NANANANANANANANANANANANA 00619-0.41/20/20069:301.04E+053.12E+037.00E+02NANANANANANANANANANANANA 00719-0.41/27/200611:003.87E+041.16E+037.00E+02NANANANANANANANANANANANA 00819-0.42/3/200612:205.14E+041.29E+046.33E+02NANANANANANANANANANANANA 00919-0.42/7/200614:408.44E+041.66E+046.37E+021.62E-014.32E-015.28E-01NANANANANANANANANA 01019-0.42/16/200613:309.04E+041.72E+046.36E+02NANANANANANANANANANANANA 01119-0.43/3/20069:051.19E+053.57E+037.00E+02NANANANANANANANANANANANA 011 19 0.4 3/3/20069:05 1.19E+05 3.57E+03 7.00E+02 NA NA NA NA NA NA NA NA NA NA NA NA01219-0.44/7/20069:555.62E+041.69E+037.00E+02NANANANANANANANANANANANA 01319-0.45/17/200613:374.07E+046.15E+038.72E+024.70E-017.53E-017.87E-016.46E+002.07E+011.64E+013.04E+001.37E+011.53E+01NANANA 01419-0.46/26/200610:401.74E+041.37E+034.29E+02-2.30E-016.66E-018.69E-01-1.34E+001.01E+011.09E+01-2.45E+008.92E+009.36E+00NANAN A01519-0.49/21/20069:304.53E+047.19E+039.12E+026.26E-011.30E+001.41E+00-3.15E-011.96E+001.82E+002.44E-011.49E+001.69E+00NANANA 01619-0.46/15/200713:582.03E+035.87E+023.84E+022.26E-014.34E-014.91E-014.66E+018.82E+002.81E+00-1.27E+002.58E+002.63E+006.18E+001.92E+012.20E+0101719-0.48/3/200710:225.95E+035.58E+022.70E+029.45E-025.76E-016.98E-01-9.20E-012.71E+002.82E+005.74E-012.88E+003.33E+00NANANA 01819-0.44/28/200813:381.04E+031.77E+022.19E+022.34E-012.96E-015.03E-01-2.93E-022.03E+003.34E+00-5.77E-022.36E+003.87E+00NANANAMW-36-24 600116.1-4.32/7/200617:00NANANA1.29E+005.48E-015.53E-01NANANANANANANANANAMW-36-24600216.1-4.32/27/20069:453.04E+049.95E+036.36E+02NANANANANANANANANANANANA00316.1-4.33/23/200616:003.42E+043.81E+031.86E+039.99E-016.42E-016.42E-01-3.86E+001.01E+011.05E+015.02E+009.33E+001.22E+016.41E+011.59E+011.53E+0100416.1-4.34/5/200610:30NANANA1.56E+004.86E-014.35E-01NANANANANANANANANA 00516.1-4.36/5/200612:202.02E+021.59E+021.51E+023.70E-017.66E-019.31E-013.99E+001.03E+011.21E+016.90E-021.02E+011.12E+01NANANA 00616.1-4.38/28/200610:302.45E+021.80E+021.71E+02NANANA-1.04E+003.27E+003.32E+001.66E+003.06E+004.19E+00NANANA 00716.1-4.36/27/200710:401.54E+021.76E+021.93E+025.90E-017.92E-018.46E-013.31E-012.81E+003.17E+004.00E-013.03E+003.45E+00NANANA 00816.1-4.38/8/200713:451.63E+021.85E+022.04E+02-5.35E-016.81E-019.31E-011.53E-013.40E+003.77E+003.56E+003.40E+004.17E+00-7.46E+002.10E+012.54E+0100916.1-4.310/18/200710:062.86E+021.91E+022.01E+028.56E-027.60E-019.26E-017.20E-012.91E+003.37E+003.11E-013.01E+003.47E+00NANAN A01016.1-4.31/23/200814:182.16E+032.36E+021.70E+021.03E-013.12E-013.76E-012.92E-022.39E+002.67E+00-4.84E-012.37E+002.57E+00NANAN A01116.1-4.37/24/200813:571.02E+031.22E+021.63E+023.38E-013.75E-016.24E-013.97E-012.09E+003.61E+00-5.45E-012.37E+003.85E+00NANAN A01216.1-4.311/10/200815:332.01E+021.50E+021.61E+025.52E-017.53E-018.04E-010.00E+006.81E+004.46E+002.72E+003.84E+005.41E+00NANAN A01316.1-4.31/22/200912:482.37E+021.16E+021.06E+02-6.26E-017.37E-019.48E-015.41E-012.88E+003.34E+003.15E-013.35E+003.82E+00NANAN A MW-36-41 001 37-252 2/10/200611:10475E+04124E+04638E+02 NA NA NA NA NA NA NA NA NA NA NA NA MW-36-41 MW-36-41 001 37-25.2 2/10/200611:10 4.75E+04 1.24E+04 6.38E+02 NA NA NA NA NA NA NA NA NA NA NA NAMW-36-4100237-25.22/27/200613:454.58E+041.22E+046.36E+02NANANANANANANANANANANANA00337-25.23/24/200612:455.52E+044.65E+031.86E+033.48E+005.46E-014.16E-01-5.91E+001.39E+011.45E+012.97E+001.53E+011.74E+014.87E+011.65E+011.65E+0100437-25.24/5/200612:55NANANA3.53E+006.24E-015.02E-01NANANANANANANANANA 00537-25.26/5/200611:302.05E+043.17E+036.01E+022.30E+006.59E-016.10E-01-3.37E+001.27E+011.33E+016.21E-021.03E+011.13E+01NANANA 00637-25.28/28/200610:102.01E+043.09E+036.45E+02NANANA1.96E+004.15E+005.22E+00-2.78E-013.56E+003.78E+00NANANA 00737-25.26/27/200712:306.11E+033.50E+021.74E+022.18E+001.17E+009.85E-014.30E-014.61E+001.74E+001.36E+002.91E+003.67E+00NANANAMW-36-5200149.7-37.92/10/200610:302.24E+048.55E+036.38E+02NANANANANANANANANANANANAMW-36-5200249.7-37.92/27/200612:052.57E+049.14E+036.36E+02NANANANANANANANANANANANA00349.7-37.93/24/200616:002.68E+043.47E+031.87E+034.11E+005.66E-015.14E-014.47E+009.06E+001.04E+01-2.47E+009.69E+001.03E+011.18E+011.44E+011.54E+0100449.7-37.94/5/200614:30NANANA5.01E+007.23E-016.26E-01NANANANANANANANANA 00549.7-37.96/5/200611:302.40E+043.68E+036.40E+024.42E+008.33E-015.53E-013.49E+001.05E+011.21E+014.80E-011.04E+011.15E+01NANANA 00649.7-37.98/28/200610:001.41E+042.19E+035.35E+02NANANA4.06E-016.52E+007.36E+00-2.69E-015.23E+005.69E+00NANANA 00749.7-37.96/27/200711:451.01E+044.89E+021.95E+022.62E+001.09E+003.28E-01-3.82E-012.77E+002.99E+009.25E-012.61E+003.14E+00NANA NA00849.7-37.98/8/200714:151.25E+041.24E+034.60E+022.26E+001.00E+002.82E-011.30E+002.97E+003.51E+00-8.82E-013.31E+003.55E+004.27E+002.14E+012.47E+01J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 3 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION00949.7-37.91/23/200814:131.13E+044.47E+021.71E+024.85E+009.69E-014.24E-01-2.89E-012.01E+002.25E+004.08E-011.86E+002.20E+00NANA NA01049.7-37.97/24/200816:001.26E+047.66E+023.74E+025.67E+007.42E-014.73E-01-4.79E-012.24E+003.69E+002.77E-022.11E+003.53E+00NANA NA01149.7-37.911/10/200816:531.10E+044.40E+021.63E+028.27E+001.24E+003.89E-01-3.85E-013.86E+004.21E+001.36E+004.67E+005.65E+00NANANA01249.7-37.91/22/200912:596.79E+036.03E+022.06E+023.37E+008.99E-016.07E-01-6.07E-012.96E+003.24E+001.65E+003.24E+004.05E+00NANA NAMW-37-220012/24/20069:501.07E+045.92E+036.39E+02NANANANANANANANANANANANAMW-37-220022/28/200610:201.28E+042.03E+031.31E+032.37E+008.91E-018.44E-012.41E+001.92E+011.95E+013.60E+001.58E+011.77E+014.24E+011.48E+011.47E+010022/28/200610:20NANANA2.40E+009.10E-019.16E-01NANANANANANANANANA 0033/10/200610:352.32E+042.57E+031.28E+034.70E+009.84E-017.87E-014.61E+001.46E+011.63E+015.65E+001.39E+011.57E+012.08E+011.27E+011.33E+010043/27/200610:353.49E+043.78E+031.81E+034.05E+008.76E-016.97E-019.75E-014.68E+005.21E+007.46E-014.48E+004.97E+005.43E+011.53E+011.52E+010056/27/200610:251.05E+048.55E+023.40E+029.57E+001.20E+007.87E-013.20E+006.92E+008.00E+00-8.05E-016.94E+007.43E+00NANANA 0069/29/20069:307.37E+031.22E+033.76E+021.42E+011.80E+009.01E-01-3.84E-028.51E+009.49E+00-1.03E+007.63E+007.69E+00NANANA 0076/27/200710:504.05E+033.35E+021.94E+021.49E+012.13E+008.72E-01-2.26E+004.88E+003.50E+00-1.12E+003.24E+003.34E+00NANANA 0088/7/200710:552.79E+032.69E+021.89E+021.83E+012.07E+008.57E-012.74E+003.93E+004.22E+004.23E-013.07E+003.54E+00NANANA 00910/15/200714:302.26E+032.22E+021.69E+022.29E+012.28E+004.67E-011.33E+003.25E+003.78E+00-1.42E+003.44E+003.44E+00NANANA 010 1/23/200810:42652E+03354E+02171E+02873E+00127E+00463E-01-209E+00296E+00286E+00234E-01308E+00349E+00 NA NA NA 010 1/23/200810:42 6.52E+03 3.54E+02 1.71E+02 8.73E+00 1.27E+00 4.63E-01-2.09E+00 2.96E+00 2.86E+00 2.34E-01 3.08E+00 3.49E+00 NA NA NA0117/24/200811:204.33E+032.28E+021.95E+021.22E+011.25E+007.14E-014.32E-012.13E+003.66E+002.97E+002.57E+004.83E+00NANANA 01211/10/200812:202.68E+033.92E+021.74E+021.80E+011.88E+004.08E-012.81E+004.96E+005.96E+00-2.85E-014.53E+004.88E+00NANANA 0131/21/200914:275.27E+035.36E+022.05E+028.81E+001.33E+006.79E-01-3.12E-013.02E+003.27E+00-2.03E+003.09E+002.82E+00NANANAMW-37-320022/28/200612:002.86E+042.73E+031.32E+031.78E+011.49E+002.22E+001.27E+011.93E+012.17E+011.50E+011.90E+012.20E+013.41E+011.46E+011.48E+01MW-37-320022/28/200612:00NANANA1.82E+011.72E+002.28E+00NANANANANANANANANA0033/10/200612:502.83E+042.79E+031.28E+031.52E+011.39E+001.90E+001.43E+011.59E+011.78E+011.51E+001.51E+011.65E+011.13E+011.26E+011.34E+010043/27/200611:101.39E+042.61E+031.72E+031.95E+011.59E+002.44E+001.10E+004.72E+005.25E+00-8.50E-014.41E+004.80E+006.09E+001.40E+011.51E+010056/27/20069:157.92E+036.63E+022.99E+022.98E+012.64E+003.72E+00-2.37E-015.24E+006.07E+00-2.02E-014.75E+005.78E+00NANANA 0069/29/200610:151.15E+041.88E+034.64E+021.53E+011.80E+001.91E+00-3.21E+008.98E+008.67E+002.51E+008.73E+001.06E+01NANANA 0012/24/200710:553.01E+049.93E+036.39E+02NANANANANANANANANANANANA 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01325.4-11.15/22/20069:207.59E+024.11E+024.46E+021.52E-012.88E-013.20E-013.42E+001.03E+017.57E+003.40E+001.02E+017.93E+00NANANA01425.4-11.16/21/20069:489.16E+024.38E+024.60E+02-2.66E+002.16E+002.40E+002.52E+007.56E+005.45E+002.50E+007.49E+005.59E+001.10E+005.70E+006.40E+00J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 4 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION01425.4-11.16/21/20069:487.62E+021.77E+021.70E+02NANANA5.90E-012.10E+002.40E+001.20E+002.07E+002.20E+00NANANA01525.4-11.17/6/200612:005.93E+024.20E+024.52E+02-3.70E-014.50E-015.20E-013.40E+001.02E+017.70E+002.98E+008.95E+007.41E+00NANAN A01625.4-11.18/7/200613:232.15E+021.80E+021.74E+025.00E-026.30E-017.10E-012.29E+006.47E+009.51E+00-7.22E-016.90E+009.33E+002.75E+012.94E+013.13E+0101725.4-11.19/5/200611:303.53E+021.86E+021.67E+02-5.30E-017.80E-018.70E-013.81E-017.68E+008.63E+00-4.48E-016.20E+006.42E+00NANA NA01825.4-11.111/22/200610:381.78E+024.08E+024.50E+02-7.00E-026.60E-017.30E-013.13E+009.38E+007.14E+003.08E+009.25E+007.53E+00NANANA01925.4-11.12/12/20079:582.24E+036.00E+025.30E+02-5.10E-011.32E+001.50E+002.73E+001.92E+002.00E+00-1.03E+001.41E+001.80E+00NANA 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005671310/23/200812:534.15E+022.01E+021.99E+023.31E+001.12E+007.74E-01-1.28E+005.46E+005.95E+00-1.22E-015.38E+006.06E+00NANANAMW-39-8400183.5-3.55/22/200710:385.91E+021.89E+021.29E+021.72E+007.22E-015.57E-01-9.07E-021.53E+001.69E+005.61E-011.58E+001.81E+00-1.68E+009.99E+001.15E+01MW-39-8400283.5-3.58/7/200715:302.52E+021.77E+021.91E+027.97E-017.18E-017.30E-013.55E-013.07E+003.44E+00-1.11E+003.59E+003.76E+00NANANA 003835-35 1/17/200813:25143E+02170E+02184E+02178E+00947E-01724E-01-274E+00299E+00286E+00836E-01294E+00350E+00 NA NA NA 003 83.5-3.5 1/17/200813:25 1.43E+02 1.70E+02 1.84E+02 1.78E+00 9.47E-01 7.24E-01-2.74E+00 2.99E+00 2.86E+00 8.36E-01 2.94E+00 3.50E+00 NA NA NA00483.5-3.55/1/200814:101.50E+021.18E+021.96E+022.23E+007.07E-018.93E-01-2.12E-012.24E+003.67E+00-2.12E-012.24E+003.67E+00NANAN A00583.5-3.510/23/200812:562.34E+021.88E+021.99E+021.04E+006.90E-015.86E-011.74E+005.88E+006.93E+001.12E+006.98E+008.05E+00NANAN 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A003127.2-5410/12/200711:302.83E+011.44E+021.64E+021.01E-014.97E-016.24E-01-2.32E+003.90E+004.06E+00-1.51E+003.72E+003.79E+00NANANA004127.2-541/7/200812:309.75E+001.48E+021.79E+025.17E-016.83E-017.23E-016.45E-012.42E+002.77E+003.24E-012.28E+002.59E+00NANANA 006127.2-545/30/200813:003.27E+019.16E+011.63E+02-4.84E-015.30E-019.68E-016.92E-012.23E+003.43E+001.36E+002.00E+003.62E+00NANAN A007127.2-548/11/200810:341.68E+021.04E+021.70E+021.65E-012.41E-014.19E-011.24E-011.65E+002.81E+007.30E-031.49E+002.51E+00-8.77E+001.13E+012.01E+01J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 5 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE 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CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION0056330.58/14/200713:104.17E+021.98E+022.00E+029.30E-024.72E-015.75E-01-8.93E-012.91E+003.08E+00-3.39E-013.40E+003.11E+00NANANA0066330.510/31/200713:305.13E+021.82E+021.81E+023.77E-014.10E-014.21E-012.76E+004.29E+004.81E+001.91E+003.90E+004.71E+00NANANA0076330.51/24/200812:552.91E+022.00E+022.12E+022.85E-014.53E-014.99E-011.73E+014.35E+002.31E+001.40E+003.17E+002.43E+00NANANA 0086330.54/30/200815:381.61E+021.19E+021.96E+024.11E-024.06E-017.89E-01-8.72E-022.06E+003.38E+009.13E-012.44E+004.27E+00NANANA 0096330.57/25/200812:185.50E+022.55E+023.75E+023.07E-013.66E-016.17E-01-2.33E+002.53E+003.03E+00-2.09E-011.74E+002.85E+00NANANA 0106330.510/23/200813:173.18E+021.61E+021.66E+023.23E-013.83E-013.92E-01-3.20E+005.21E+005.30E+00-1.59E+005.73E+006.02E+00NANAN A0116330.52/3/20099:402.06E+021.92E+021.97E+024.52E-017.98E-018.95E-011.96E+003.53E+004.18E+003.09E+003.06E+004.12E+00NANANAMW-44-102001912.56/13/200610:352.53E+022.01E+021.96E+023.53E-019.93E-011.26E+00-3.22E+008.26E+008.67E+00-7.71E-017.99E+008.52E+00NANANAMW-44-102002912.57/20/200610:503.16E+021.82E+021.64E+02-3.39E-011.05E+001.29E+00-2.99E+009.39E+009.83E+00-2.34E+009.50E+009.39E+00NANANA003912.58/4/20069:407.61E+022.30E+021.81E+02NANANA-4.04E+008.10E+007.76E+00-2.00E+007.01E+006.82E+00NANANA 004912.59/13/200611:302.67E+021.94E+022.00E+02NANANA7.19E+009.68E+001.12E+01-4.76E-018.18E+008.99E+00NANANA 0058013.56/19/200717:462.98E+021.76E+021.83E+02-1.33E-014.81E-016.39E-011.88E+002.15E+002.63E+006.41E-012.02E+002.38E+00-4.92E+001.31E+011.58E+010068013.58/14/200714:552.84E+021.89E+021.99E+021.97E-017.63E-018.99E-01-1.46E+002.76E+002.77E+00-1.35E+002.79E+002.73E+00NANANA 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00553.217.18/10/200711:002.70E+021.88E+022.02E+025.07E-018.04E-018.91E-01-3.84E-013.48E+003.75E+001.49E-012.94E+003.37E+00NANAN AMW-47-8000174-3.74/13/200611:452.33E+034.28E+022.29E+022.73E+007.35E-016.53E-01-5.82E-014.48E+005.14E+002.25E-013.91E+004.76E+00NANANAMW-47-8000274-3.77/18/20068:511.87E+033.87E+022.58E+022.86E+001.43E+001.14E+001.67E+001.05E+011.19E+012.39E+009.21E+001.09E+01NANANAJ:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 7 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION00374-3.76/19/200711:002.36E+035.94E+023.58E+023.27E+008.98E-015.28E-012.05E+003.81E+004.58E+00-2.27E+004.82E+003.92E+004.08E-011.18E+011.38E+0100474-3.78/10/200712:213.51E+037.25E+024.52E+023.55E+001.21E+009.05E-01-9.39E-023.21E+003.56E+00-8.20E-023.18E+003.50E+00NANANAMW-48-2300120.4-52/8/200610:101.66E+023.26E+023.42E+021.93E-015.04E-015.94E-01-2.14E-011.04E+011.13E+011.46E+009.95E+001.12E+01NANANAMW-48-2300220.4-54/12/20069:581.24E+024.08E+024.52E+02-1.10E-013.90E-014.40E-013.25E+009.75E+007.26E+002.49E+007.47E+006.18E+00NANANA00320.4-54/27/200613:422.38E+021.94E+022.03E+02-2.50E-024.58E-015.04E-01-1.88E+005.06E+005.65E+00-1.19E-014.40E+005.27E+00NANAN A00420.4-55/22/200610:307.55E+024.26E+024.46E+022.42E-012.88E-013.10E-013.22E+009.67E+007.12E+004.29E+001.29E+019.62E+00NANANA 00520.4-56/9/200611:156.03E+014.39E+026.24E+023.70E-013.60E-014.00E-012.59E+007.76E+005.90E+003.25E+009.74E+007.61E+001.60E+011.53E+011.62E+0100520.4-56/9/200611:152.95E+024.14E+024.53E+023.10E-019.88E-011.26E+001.09E+005.21E+005.80E+003.08E+005.41E+005.96E+00NANANA 00520.4-56/9/200611:157.37E+022.09E+021.56E+02NANANANANANANANANANANANA 00620.4-57/6/200612:004.21E+024.17E+024.52E+02-2.20E-014.20E-014.90E-012.55E+007.64E+005.49E+002.60E+007.79E+005.78E+00NANANA 00720.4-58/8/200610:301.04E+021.68E+021.72E+027.00E-026.30E-017.00E-011.93E+004.76E+005.56E+001.99E+004.41E+005.37E+00NANANA 00820.4-59/5/200610:052.44E+011.59E+021.72E+02-6.00E-027.80E-018.60E-01-2.90E+007.82E+008.12E+001.05E-018.58E+001.02E+01NANANA 00920.4-511/22/20069:231.67E+024.08E+024.50E+02-7.00E-026.30E-017.10E-013.91E+001.17E+018.71E+003.22E+009.67E+007.76E+00NANANA 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00838.1-23.411/15/200614:216.19E+031.38E+031.00E+032.11E+012.46E+008.10E-01-6.60E-012.25E+002.60E+001.18E+002.34E+002.60E+002.60E+005.70E+006.20E+0000938.1-23.46/26/200712:304.44E+032.90E+021.86E+022.08E+011.65E+006.22E-01-3.62E-014.56E+004.32E+00-2.09E+003.66E+003.54E+00-5.19E+001.30E+011.54E+0101038.1-23.48/9/200712:054.30E+037.91E+024.59E+022.56E+012.77E+008.29E-01-1.17E+003.27E+003.37E+002.77E+003.52E+004.56E+004.03E-012.10E+012.46E+0101138.1-23.41/28/200815:492.81E+034.92E+022.98E+022.94E+012.57E+005.58E-018.68E-012.10E+002.43E+008.96E-012.13E+002.52E+005.79E+001.73E+011.97E+0101238.1-23.44/25/200812:383.20E+032.54E+021.44E+022.33E+011.49E+005.24E-014.07E-011.82E+003.18E+005.91E-012.37E+004.13E+00-1.03E+001.17E+012.04E+0101338.1-23.47/30/200815:062.52E+031.45E+021.30E+022.16E+011.41E+006.09E-014.49E-011.59E+002.79E+007.96E-011.70E+003.09E+00-2.73E+001.59E+012.84E+0101438.1-23.411/5/200814:312.54E+034.04E+021.97E+022.16E+012.50E+007.01E-01-1.27E+006.33E+006.92E+00-1.93E+008.10E+007.46E+004.70E+001.84E+012.09E+0101538.1-23.42/6/20099:572.25E+032.40E+021.70E+022.07E+012.37E+009.73E-011.38E+003.51E+004.09E+00-2.43E+003.38E+003.11E+00-2.15E+002.15E+012.48E+01MW-49-6500160-45.43/22/200616:555.43E+032.13E+031.82E+031.85E+011.01E+004.13E-011.36E+001.43E+011.72E+015.51E+001.37E+011.81E+01NANANAMW-49-6500360-45.45/19/200615:555.70E+039.38E+023.84E+021.13E+018.98E-014.28E-01-2.86E+008.51E+008.67E+00-1.43E-019.39E+001.03E+01NANAN 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00860-45.411/15/200613:463.04E+031.20E+031.00E+031.92E+012.31E+008.40E-012.12E+002.61E+002.80E+003.00E-012.07E+002.40E+00-1.80E+006.90E+007.70E+0000960-45.46/26/200712:302.62E+032.45E+021.85E+021.58E+011.58E+008.28E-01-1.36E-033.06E+003.38E+00-3.59E+004.30E+002.75E+00-7.43E+001.41E+011.68E+0101060-45.48/9/200711:202.41E+036.42E+024.60E+022.08E+012.40E+009.11E-013.44E-012.76E+003.13E+001.65E+003.03E+003.73E+003.50E+002.14E+012.49E+0101160-45.41/28/200816:521.85E+034.22E+022.95E+022.73E+012.79E+006.29E-012.83E+003.72E+003.81E+00-1.63E+003.17E+003.09E+001.01E+011.95E+012.20E+0101260-45.44/25/200813:131.93E+031.86E+021.96E+021.90E+016.62E-013.64E-01-8.45E-021.93E+003.28E+00-1.40E-012.29E+003.84E+006.81E+009.59E+001.62E+0101360-45.47/30/200813:581.56E+031.23E+021.30E+021.78E+011.29E+005.51E-01-4.77E-012.20E+003.63E+008.42E-022.02E+003.39E+00-6.53E+001.67E+012.96E+01J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 8 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION01460-45.411/5/200814:431.26E+033.02E+021.92E+021.72E+012.23E+005.97E-01-4.96E+006.60E+006.62E+002.51E+006.11E+007.41E+008.42E-011.80E+012.06E+0101560-45.42/6/20099:591.42E+032.10E+021.70E+021.73E+012.10E+009.15E-01-9.15E-012.96E+003.20E+007.61E-012.64E+003.21E+002.70E+002.22E+012.54E+01MW-50-4200142-27.13/22/200614:259.75E+035.78E+022.14E+021.93E+011.12E+004.76E-01-1.36E+009.90E+001.13E+01-5.74E-018.55E+001.02E+014.01E+001.34E+011.46E+01MW-50-4200342-27.15/19/200613:554.59E+037.74E+023.53E+021.95E+011.25E+004.77E-014.84E+008.95E+001.18E+01-4.07E-018.17E+001.02E+01NANANA00342-27.15/19/200613:554.58E+033.84E+036.30E+02NANANANANANANANANANANANA 00442-27.16/7/20069:001.79E+021.89E+021.56E+023.94E+007.62E-016.06E-011.15E-017.81E+008.62E+00-1.70E+007.37E+007.69E+00NANANA 00542-27.17/3/200611:353.98E+022.18E+022.02E+023.45E+002.00E+001.65E+006.90E+001.38E+011.65E+014.75E+001.04E+011.30E+01NANANA 00642-27.18/1/200611:201.41E+036.42E+026.14E+02NANANA8.99E+001.01E+011.33E+016.21E+009.26E+001.24E+011.12E+011.53E+011.64E+01 00742-27.18/28/200611:503.11E+021.89E+021.76E+02NANANA1.97E+005.84E+006.74E+003.49E+006.36E+007.93E+00NANANA 00842-27.111/15/200611:501.70E+031.11E+031.00E+031.13E+011.56E+008.30E-017.20E+004.20E+004.30E+00-9.00E-013.00E+003.80E+00-1.20E+006.00E+006.70E+0000942-27.16/26/200714:302.15E+021.71E+021.86E+021.16E+011.35E+007.64E-011.91E+004.44E+005.12E+00-1.64E+004.29E+003.94E+00-6.30E+001.84E+012.19E+0101042-27.17/26/200711:201.45E+021.74E+021.93E+021.94E+011.81E+005.31E-01-5.50E+004.71E+003.68E+002.53E+003.39E+004.32E+004.92E+001.91E+012.19E+0101142-27.110/18/200714:081.01E+021.76E+021.97E+022.45E+012.52E+005.74E-013.02E-013.38E+003.87E+006.26E-013.75E+003.81E+00-9.14E-011.62E+011.87E+0101342-27.12/26/200812:196.13E+022.94E+022.87E+022.40E+008.61E-017.34E-01-1.95E+004.80E+004.66E+001.77E+003.90E+004.68E+001.71E+012.40E+012.67E+01 014 42-271 7/31/200815:43373E+02134E+02191E+02928E+00866E-01439E-01-940E-01199E+00320E+00953E-01191E+00344E+00158E+01176E+01296E+01 014 42-27.1 7/31/200815:43 3.73E+02 1.34E+02 1.91E+02 9.28E+00 8.66E-01 4.39E-01-9.40E-01 1.99E+00 3.20E+00 9.53E-01 1.91E+00 3.44E+00 1.58E+01 1.76E+01 2.96E+0101542-27.111/6/200810:441.29E+021.76E+021.92E+022.56E+009.87E-016.85E-011.65E+004.98E+005.77E+005.18E-015.36E+006.17E+000.00E+001.76E+012.03E+0101642-27.11/22/200915:232.15E+021.38E+021.48E+021.96E+008.06E-016.31E-01-1.74E+002.48E+002.37E+00-5.18E-012.31E+002.39E+00-3.34E+001.74E+012.03E+01MW-50-6600167-52.13/22/200614:506.81E+034.94E+022.13E+022.55E+011.21E+004.90E-01-7.67E+001.60E+011.66E+01-2.18E+001.68E+011.81E+015.33E+001.35E+011.47E+01MW-50-6600367-52.15/19/200615:201.08E+045.90E+036.30E+02NANANA3.23E+001.06E+011.23E+017.78E-011.12E+011.25E+01NANANA00367-52.15/19/200615:209.61E+031.52E+034.94E+021.95E+011.22E+005.16E-01NANANANANANANANANA 00467-52.16/7/20069:201.05E+041.65E+034.29E+021.98E+011.18E+004.66E-01-1.97E+008.71E+009.38E+002.49E+008.98E+001.04E+01NANANA 00567-52.17/3/200611:008.62E+032.00E+031.52E+032.53E+013.79E+001.67E+00-2.04E+009.54E+001.02E+014.40E-018.34E+009.23E+00NANANA 00667-52.18/1/20069:287.93E+039.36E+026.16E+02NANANA5.59E-015.98E+006.68E+00-4.31E+006.18E+005.00E+001.06E+011.06E+011.13E+01 00767-52.18/28/200612:056.77E+031.59E+031.30E+03NANANA7.66E-024.67E+005.86E+001.34E+004.23E+005.88E+00NANANA 00867-52.111/15/200610:375.05E+031.32E+031.00E+032.15E+012.34E+008.10E-012.00E-013.30E+003.70E+002.60E+003.30E+003.50E+001.50E+005.70E+006.30E+0000960-45.16/26/200714:024.21E+032.85E+021.86E+022.93E+011.86E+005.25E-01-2.19E+002.64E+002.49E+001.63E-012.36E+002.74E+00-6.05E-011.50E+011.74E+0101060-45.17/26/200711:254.50E+033.39E+022.04E+023.10E+012.50E+005.78E-01-1.12E+004.54E+004.18E+001.08E-023.46E+003.94E+001.93E+011.86E+012.02E+0101160-45.110/18/200714:383.85E+036.53E+023.62E+024.74E+013.72E+007.97E-01-2.28E+004.61E+004.36E+001.65E+004.20E+004.96E+00-3.71E+001.58E+011.83E+0101360-45.12/26/200813:463.74E+037.98E+025.31E+023.58E+012.36E+007.40E-017.87E-012.69E+003.18E+002.54E-012.54E+002.96E+004.87E+001.86E+012.12E+0101560-45.15/12/200815:402.80E+032.39E+021.44E+023.38E+011.85E+007.01E-017.08E-012.24E+003.87E+001.23E+002.13E+003.83E+007.86E+001.28E+012.17E+0101660-45.17/31/200817:022.71E+032.48E+021.91E+023.30E+011.59E+004.02E-012.31E+001.82E+003.43E+006.64E-011.46E+002.68E+003.58E+001.40E+012.43E+0101760-45.19/8/200816:212.08E+034.17E+025.04E+023.23E+011.66E+004.88E-01-8.81E-012.69E+003.96E+00NANANA1.22E+011.23E+012.06E+01 01860-45.111/6/200812:382.73E+034.17E+021.98E+023.20E+013.00E+007.41E-01-8.66E-015.97E+006.56E+00-2.52E+008.96E+008.45E+00-1.63E+002.07E+012.39E+0101960-45.111/19/200816:292.43E+032.49E+021.73E+024.99E+013.75E+008.66E-012.50E+005.26E+002.61E+005.13E-012.70E+003.17E+00-5.06E-011.98E+012.29E+0102060-45.11/22/200916:012.30E+032.16E+021.48E+022.75E+012.28E+004.07E-01-1.68E+004.20E+003.99E+00-1.97E-013.32E+003.66E+00-9.33E+001.88E+012.23E+01MW-51-4000139.7285/30/200711:451.98E+021.65E+021.68E+02-5.30E-016.73E-019.82E-011.04E-013.48E+003.77E+001.61E+003.23E+003.77E+00NANANAMW-51-40MW5140 001 39.7 28 5/30/200711:45 1.98E+02 1.65E+02 1.68E+02 5.30E01 6.73E01 9.82E01 1.04E01 3.48E+00 3.77E+00 1.61E+00 3.23E+00 3.77E+00 NA NA NAMW514000239.7287/24/200715:302.23E+021.59E+021.60E+027.09E-024.71E-015.38E-011.65E-023.39E+003.85E+00-1.32E+004.02E+004.13E+00NANANA00439.72811/9/200715:401.47E+021.55E+021.70E+02-8.16E-023.87E-014.52E-011.68E+002.96E+003.52E+00-5.71E-023.15E+003.49E+00NANANA 00539.7281/8/200810:475.86E+011.56E+021.79E+021.57E-016.77E-018.32E-011.83E-022.66E+002.93E+007.71E-012.75E+002.87E+00NANANA 00739.7285/30/200810:271.41E+021.01E+021.60E+023.71E-015.67E-019.67E-013.19E-012.03E+003.41E+002.18E+002.36E+003.50E+00NANANA 00839.7288/8/200814:403.29E+021.60E+022.03E+023.74E-014.02E-016.70E-011.59E+002.19E+003.98E+00-1.99E-011.79E+002.99E+00-8.33E+001.02E+011.83E+0100939.72810/27/200813:111.68E+021.85E+021.95E+021.84E-024.26E-015.67E-014.51E-014.28E+004.88E+00-1.93E+006.35E+006.59E+00-5.03E+002.11E+012.46E+0101039.7281/20/200914:502.37E+011.68E+021.92E+021.92E-017.95E-019.70E-019.89E-012.81E+003.26E+001.05E+002.75E+003.30E+008.95E+001.67E+011.87E+01MW-51-7900178.7-115/30/200712:429.89E+011.55E+021.72E+02-2.36E-016.98E-019.58E-012.20E+003.63E+003.90E+003.52E-013.31E+003.76E+00NANANAMW-51-7900278.7-117/24/200717:004.24E+011.43E+021.67E+028.02E-035.35E-016.15E-01-6.37E-013.88E+004.21E+00-2.83E-014.51E+004.93E+00NANAN A00478.7-1111/9/200716:185.00E+011.50E+021.71E+02-4.97E-022.99E-013.52E-012.66E+002.97E+003.56E+00-2.43E-014.02E+004.45E+00NANAN A00578.7-111/8/200810:089.26E+011.59E+021.79E+02-4.64E-017.01E-019.74E-01-7.91E-012.22E+002.42E+002.58E-012.37E+002.70E+00NANANA 00778.7-115/30/200810:556.70E+019.41E+011.61E+022.46E-024.94E-019.94E-01-1.14E+003.43E+004.80E+00-5.13E-012.70E+004.31E+00NANAN A00878.7-118/8/200812:551.61E+021.31E+022.01E+022.03E-012.99E-015.18E-019.63E-012.17E+003.82E+005.64E-012.30E+003.98E+00-1.07E+011.07E+011.93E+0100978.7-1110/27/200813:301.14E+011.62E+021.99E+023.14E-036.14E-017.85E-018.42E-015.07E+005.75E+002.41E+005.21E+006.37E+003.72E+001.77E+012.02E+0101078.7-111/20/200915:211.01E+021.33E+021.48E+02-1.71E-013.15E-015.02E-015.93E-015.57E+003.65E+00-2.94E-013.21E+003.56E+001.58E+011.73E+011.90E+01MW-51-104001103.7-365/30/200711:055.71E+011.48E+021.71E+02-6.74E-027.59E-019.90E-011.25E+003.27E+003.35E+007.70E-023.25E+003.62E+00NANANAMW-51-104002103.7-367/24/200717:069.07E+011.47E+021.64E+023.62E-014.86E-015.41E-01-4.20E+004.62E+003.92E+001.42E+004.44E+005.33E+00NANAN A004103.7-3611/9/200714:355.17E+011.50E+021.70E+02-2.40E-013.18E-013.86E-01-1.26E+002.85E+002.92E+001.15E+002.61E+003.18E+00NANA NA005103.7-361/8/200812:15-4.84E+001.45E+021.78E+02-6.19E-027.22E-019.34E-01-9.37E-012.09E+002.26E+00-3.84E-012.54E+002.50E+00NANANA006103.7-368/8/200810:502.82E+021.55E+022.08E+02-2.66E-014.00E-017.92E-011.56E+002.03E+003.60E+00-1.21E-012.07E+003.38E+00-4.19E+001.34E+012.36E+01007103.7-3610/27/200810:071.21E+021.39E+021.49E+021.19E-014.97E-016.13E-015.61E+006.81E+008.52E+00-5.72E+008.93E+008.26E+00-1.01E+001.84E+012.12E+01008103.7-361/20/200910:469.95E+011.33E+021.48E+029.07E-033.78E-015.04E-01-1.33E+002.87E+003.03E+00-1.01E+002.37E+002.42E+00-2.06E+002.00E+012.33E+01MW-51-135001135.2-67.55/30/200713:008.24E+011.50E+021.70E+02-4.68E-015.53E-018.40E-01-4.01E-013.62E+004.03E+002.56E+003.84E+004.48E+00NANANAMW-51-135002135.2-67.57/24/200712:409.51E+011.43E+021.59E+025.33E-025.04E-015.76E-01-4.56E-014.07E+004.36E+003.42E-013.30E+003.84E+00NANANA004135.2-67.511/9/200711:559.83E+011.53E+021.72E+02-2.42E-012.54E-013.18E-01-7.27E-013.46E+003.70E+00-3.14E-013.29E+003.66E+00NANANA005135.2-67.51/8/200813:204.91E+011.55E+021.80E+023.47E-027.04E-018.79E-016.30E-021.88E+002.09E+001.43E-021.71E+001.90E+00NANAN A006135.2-67.58/8/200811:502.09E+021.39E+021.99E+025.09E-022.40E-014.57E-01-1.03E+002.08E+003.29E+001.01E-022.01E+003.34E+00-6.78E+001.14E+012.02E+01007135.2-67.510/27/200810:057.68E+011.73E+021.99E+022.72E-045.05E-016.63E-01-1.74E+005.26E+005.63E+003.92E+006.09E+007.69E+00-2.05E-011.74E+012.01E+01008135.2-67.51/20/200911:021.31E+021.35E+021.48E+02-3.04E-013.41E-015.84E-01-6.92E-013.89E+004.31E+009.34E-013.06E+003.66E+00-1.08E+011.76E+012.10E+01MW-51-163001162.7-955/30/200714:401.18E+021.56E+021.69E+023.29E-011.16E+001.36E+00-2.81E-013.09E+003.45E+001.77E-012.82E+003.20E+00NANANAMW-51-163002162.7-957/24/200714:054.98E+011.44E+021.66E+021.05E-014.58E-015.21E-01-2.43E-013.44E+003.78E+008.64E-023.25E+003.63E+00NANAN A004162.7-9511/9/200713:327.30E+011.52E+021.71E+022.08E-012.82E-013.12E-011.41E-013.54E+003.51E+00-1.11E+003.01E+003.11E+00NANAN A005162.7-951/8/200813:57-1.99E+011.47E+021.82E+024.40E-018.22E-019.29E-01-1.74E+002.66E+002.46E+008.69E-022.15E+002.44E+00NANAN A006162.7-958/8/200811:166.92E+018.27E+011.40E+02-1.22E-012.63E-015.44E-01-1.54E+002.25E+003.56E+003.78E-011.97E+003.39E+004.33E+001.26E+012.15E+01007162.7-9510/27/200810:205.58E+011.67E+021.95E+022.55E-015.76E-016.67E-01-1.70E+006.18E+006.74E+005.42E-015.38E+006.25E+002.11E+001.88E+012.14E+01J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 9 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION008162.7-951/20/200911:444.60E+011.30E+021.48E+02-1.98E-014.97E-016.98E-01-9.70E-013.14E+003.27E+00-7.70E-023.24E+003.54E+00-1.01E+011.80E+012.14E+01MW-51-189001189.2-121.55/30/200714:001.87E+021.67E+021.71E+02-2.88E-028.90E-011.11E+00-3.62E-023.98E+003.82E+004.56E+003.57E+004.63E+00NANANAMW-51-189002189.2-121.57/24/200713:159.49E+011.46E+021.63E+023.93E-014.08E-014.48E-01-8.87E-014.11E+003.58E+001.57E+004.02E+004.31E+00NANANA003189.2-121.510/2/200712:208.45E+001.70E+021.96E+02-5.06E-022.16E-012.58E-011.38E+015.45E+002.92E+00-4.14E-012.79E+003.04E+00NANANA004189.2-121.511/9/200713:05-6.26E+001.48E+021.71E+021.93E-013.61E-014.08E-013.04E+003.27E+004.07E+00-8.07E-023.65E+004.05E+00NANANA005189.2-121.51/8/200813:10-4.82E+001.44E+021.77E+02-3.17E-027.01E-018.92E-011.35E+002.13E+002.49E+001.42E+001.98E+002.41E+00NANANA006189.2-121.58/8/200811:171.10E+028.97E+011.43E+02-1.43E-013.38E-016.60E-01-2.27E+002.13E+003.12E+00-1.79E+002.70E+003.57E+00-5.89E+001.15E+012.04E+01007189.2-121.510/27/200810:117.69E+011.74E+021.99E+025.61E-017.16E-017.51E-016.11E-016.38E+007.30E+003.04E+006.13E+007.60E+00-6.95E+001.84E+012.17E+01008189.2-121.51/20/200911:333.32E+011.30E+021.48E+02-2.14E-013.45E-015.59E-01-2.05E+003.48E+003.62E+001.91E+003.32E+004.20E+00-8.33E+001.79E+012.11E+01MW-52-11001106.86/20/200712:351.47E+021.68E+021.84E+02-3.58E-016.33E-018.33E-011.96E+002.54E+002.99E+006.12E-012.29E+002.65E+00-4.56E+001.28E+011.54E+01MW-52-11002106.88/6/200716:187.71E+011.73E+021.94E+02-5.43E-016.12E-019.38E-01-2.16E+003.42E+003.23E+003.39E-022.79E+003.12E+00NANANA003106.84/28/200813:231.13E+031.53E+021.96E+021.97E-014.73E-018.46E-015.19E-011.93E+003.36E+00-2.15E+003.52E+004.08E+00NANANAMW-52-1800117.5-2.65/24/200710:441.62E+021.52E+021.65E+02-2.20E-014.98E-017.30E-016.53E-013.19E+003.74E+003.13E+003.30E+004.22E+00-1.09E+009.82E+001.14E+01MW-52-1800217.5-2.68/6/200713:456.73E+011.74E+021.96E+02-7.91E-026.92E-018.93E-01-1.43E+003.54E+003.67E+001.11E-013.15E+003.54E+00NANAN A MW-52-48 001 48-331 5/24/200711:35702E+01148E+02167E+02-361E-01744E-01101E+00366E-01294E+00339E+00-991E-01303E+00311E+00-274E+00816E+00955E+00 MW-52-48 MW-52-48 001 48-33.1 5/24/200711:35 7.02E+01 1.48E+02 1.67E+02-3.61E-01 7.44E-01 1.01E+00 3.66E-01 2.94E+00 3.39E+00-9.91E-01 3.03E+00 3.11E+00-2.74E+00 8.16E+00 9.55E+00 MW-52-4800248-33.18/6/200714:001.15E+021.76E+021.96E+02-5.59E-014.83E-017.33E-017.85E-013.24E+003.75E+004.31E-013.29E+003.75E+00NANANAMW-52-6400164-49.15/24/200714:443.82E+001.70E+021.98E+02-3.20E-017.68E-019.77E-01-1.03E+003.25E+003.45E+008.00E-013.54E+004.11E+00-2.85E+009.12E+001.07E+01MW-52-6400264-49.18/6/200715:503.72E+011.71E+021.96E+02-1.70E-027.22E-019.23E-015.10E-013.50E+003.68E+001.80E+006.08E+004.12E+00NANANAMW-52-122001122-107.15/24/200714:556.78E+011.47E+021.66E+02-4.24E-016.62E-019.64E-012.52E+003.59E+003.62E+00-1.76E+003.38E+003.29E+00-1.94E+009.68E+001.13E+01MW-52-122002122-107.18/6/200712:054.42E+011.71E+021.96E+02-4.19E-017.10E-019.60E-011.99E+004.09E+004.34E+002.10E-014.13E+004.70E+00NANAN A003122-107.14/28/200815:238.87E+018.60E+011.44E+021.21E-012.92E-015.22E-01-1.25E+002.05E+003.24E+002.72E+002.38E+004.52E+00NANA NAMW-52-162001161.5-146.65/24/200711:552.82E+021.95E+022.03E+02-5.15E-014.87E-018.12E-01-5.80E-013.59E+003.29E+001.59E+003.15E+003.88E+00-7.54E-019.75E+001.13E+01MW-52-162002161.5-146.68/6/200711:302.11E+021.80E+021.95E+021.53E-024.79E-016.03E-013.61E-023.44E+003.77E+00-3.73E-023.12E+003.52E+00NANANA003161.5-146.64/28/200810:221.45E+028.73E+011.43E+021.03E+003.62E-014.43E-01-9.14E-012.03E+003.31E+002.33E+002.13E+004.14E+00NANANAMW-52-181001181-166.15/24/200712:062.48E+021.94E+022.04E+02-3.19E-015.07E-017.58E-01-5.99E-013.30E+003.52E+00-2.81E-013.74E+004.19E+00-2.23E-011.01E+011.17E+01MW-52-181002181-166.18/6/200711:401.19E+021.77E+021.97E+025.84E-025.56E-016.77E-01-1.21E+002.87E+002.97E+001.28E+002.96E+003.57E+00NANAN A003181-166.14/29/200810:241.56E+028.77E+011.44E+021.62E-012.46E-014.28E-011.08E+002.25E+003.96E+004.11E-012.12E+003.63E+00NANAN 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Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 10 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE 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0051725-1594 5/2/200810:35211E+03210E+02142E+02122E+01118E+00906E-01-644E-01222E+00366E+00171E+00210E+00401E+00447E+00123E+01210E+01 005 172.5-159.4 5/2/200810:35 2.11E+03 2.10E+02 1.42E+02 1.22E+01 1.18E+00 9.06E-01-6.44E-01 2.22E+00 3.66E+00 1.71E+00 2.10E+00 4.01E+00 4.47E+00 1.23E+01 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Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 11 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE 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Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 12 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE 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A00314.90.710/11/200712:431.49E+021.56E+021.71E+023.08E-016.23E-017.12E-011.52E+002.63E+003.16E+00-1.41E-012.52E+002.74E+00NANAN A00414.90.71/9/200814:551.23E+021.56E+021.73E+02-6.34E-025.55E-017.38E-012.55E+003.29E+003.42E+001.97E+002.94E+003.75E+00NANANA 00514.90.74/23/200814:502.57E+021.53E+022.43E+022.31E-024.68E-018.62E-018.04E-012.35E+004.03E+007.68E-012.06E+003.69E+008.53E+001.43E+012.42E+0100614.90.77/30/200811:131.79E+021.20E+021.91E+023.29E+005.61E-014.68E-01-1.71E-021.75E+002.97E+00-1.16E+002.04E+002.49E+00NANAN A00714.90.711/5/200810:533.20E+021.59E+021.65E+023.25E-016.20E-017.03E-011.31E-015.91E+006.75E+00-1.52E+005.73E+006.04E+00NANANA 00814.90.71/29/200913:461.54E+021.85E+021.98E+02-2.22E-016.74E-018.57E-019.78E-022.64E+003.01E+001.02E+003.20E+003.87E+00NANANAMW-63-3400131.5-17.35/18/200713:032.28E+021.58E+021.55E+02-1.62E-015.43E-017.77E-014.10E-012.21E+002.51E+00-3.25E-012.65E+002.44E+001.57E+001.54E+011.80E+01MW-63-3400231.5-17.37/30/200713:282.80E+021.77E+021.90E+02-1.64E-013.36E-014.03E-011.73E-013.66E+003.56E+003.98E-013.66E+004.24E+00NANA NA00331.5-17.310/11/200712:502.31E+021.61E+021.74E+02-2.75E-014.44E-016.73E-01-6.24E-013.60E+003.58E+003.81E-012.65E+003.10E+00NANANA00431.5-17.31/9/200814:203.26E+021.65E+021.71E+021.24E-015.57E-016.84E-011.83E+003.63E+004.44E+003.53E-013.90E+004.35E+00NANANA00531.5-17.34/23/200813:554.90E+021.68E+022.45E+023.82E-015.68E-019.89E-011.71E+002.05E+003.78E+00-1.77E+003.53E+004.19E+005.77E+001.46E+012.49E+01J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 13 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION00631.5-17.37/30/200811:124.41E+021.39E+021.91E+021.15E+004.60E-016.45E-01-1.48E-022.26E+003.87E+00-7.91E-012.52E+003.65E+00NANANA00731.5-17.311/5/200811:034.14E+023.77E+023.85E+023.15E-016.77E-017.78E-015.73E-015.43E+006.10E+00-1.40E-015.17E+005.67E+00NANA NA00831.5-17.31/29/200912:224.20E+022.22E+021.96E+022.20E-016.87E-018.13E-011.41E+002.91E+003.45E+00-2.64E-012.96E+003.23E+00NANA NAMW-63-5000149.5-37.25/15/200711:483.26E+021.83E+021.73E+02-9.70E-026.15E-018.32E-01-1.33E-015.28E+005.01E+006.64E-014.23E+004.81E+00-2.41E+001.24E+011.51E+01MW-63-5000249.5-37.27/25/200714:002.25E+021.80E+021.95E+021.29E-016.03E-016.84E-012.08E+003.18E+003.90E+00-1.58E-013.19E+003.54E+00NANA NA00349.5-37.210/11/200711:102.89E+021.62E+021.73E+02-3.41E-015.10E-017.67E-016.21E-012.98E+003.39E+001.56E+003.17E+003.86E+00NANANA00449.5-37.21/9/200812:323.56E+021.67E+021.72E+024.48E-017.41E-018.26E-013.37E-012.66E+003.02E+00-1.42E+003.14E+003.20E+00NANAN A00549.5-37.24/23/200813:042.70E+021.63E+022.65E+024.27E-015.45E-019.26E-01-1.10E+001.85E+002.93E+009.01E-011.75E+003.27E+002.43E+001.40E+012.41E+0100649.5-37.27/30/200810:293.35E+021.32E+021.91E+026.10E-014.97E-018.02E-01-1.77E+001.83E+002.66E+00-1.22E+001.91E+002.80E+00NANANA00749.5-37.211/5/20089:393.17E+021.94E+021.99E+025.67E-016.58E-016.79E-011.26E+006.36E+007.04E+00-7.21E-016.52E+007.08E+00NANAN A00849.5-37.21/29/200914:062.98E+022.04E+021.96E+025.67E-018.00E-018.76E-018.89E-023.09E+003.51E+001.37E+003.41E+004.19E+00NANAN AMW-63-9300193-80.710/2/200613:105.16E+021.95E+025.70E+017.81E-026.73E-017.32E-015.46E-011.43E+011.59E+01-4.42E+001.67E+012.03E+01-5.31E+001.23E+011.54E+01MW-63-9300293-80.75/15/200712:452.81E+021.80E+021.75E+028.20E-027.29E-019.24E-011.87E-014.80E+004.60E+009.57E-014.54E+004.51E+00NANANA00393-80.77/25/200714:342.37E+021.82E+021.97E+02-4.43E-014.41E-015.29E-011.24E+003.31E+003.90E+009.28E-033.75E+004.16E+00NANANA 004 93-807 10/11/200711:17115E+02155E+02172E+02819E-01890E-01947E-01-698E-01297E+00316E+00-177E+00333E+00323E+00 NA NA NA 004 93-80.7 10/11/200711:17 1.15E+02 1.55E+02 1.72E+02 8.19E-01 8.90E-01 9.47E-01-6.98E-01 2.97E+00 3.16E+00-1.77E+00 3.33E+00 3.23E+00 NA NA NA00593-80.71/9/200812:462.15E+021.59E+021.71E+021.86E-017.08E-018.45E-017.74E-013.06E+003.56E+001.05E-013.20E+003.58E+00NANANA 00593-80.74/23/200811:233.02E+021.65E+022.65E+022.93E-015.46E-019.39E-013.49E-012.27E+003.88E+007.04E-012.41E+004.14E+00-3.72E+001.41E+012.46E+0100793-80.77/29/200814:172.38E+021.25E+021.92E+022.28E-032.21E-013.86E-01-4.02E-012.01E+003.36E+00-3.19E-011.96E+003.23E+00NANAN A00893-80.711/5/200810:143.90E+023.75E+023.86E+02-9.77E-021.94E-012.36E-011.53E+005.10E+005.92E+002.80E+006.24E+007.60E+00NANANA 00993-80.71/29/200914:203.40E+022.09E+021.93E+021.18E-016.33E-017.75E-01-9.44E-013.17E+003.42E+00-8.17E-013.63E+003.88E+00NANAN AMW-63-112001111.5-99.25/15/200713:104.24E+021.95E+021.75E+02-5.27E-027.50E-019.42E-012.58E+003.90E+003.59E+009.59E-013.72E+004.19E+00-5.14E+001.34E+011.55E+01MW-63-112002111.5-99.27/25/200714:522.69E+021.83E+021.97E+026.32E-023.46E-013.99E-016.92E-014.14E+004.19E+00-6.35E-013.94E+004.34E+00NANANA003111.5-99.210/11/200713:452.78E+021.62E+021.72E+02-7.94E-026.73E-018.71E-01-3.04E+005.49E+004.52E+007.65E-013.50E+004.15E+00NANANA004111.5-99.21/9/200810:204.69E+021.73E+021.72E+022.19E-015.07E-015.92E-013.90E-013.30E+003.34E+002.87E-013.56E+003.75E+00NANAN A005111.5-99.24/23/200811:083.72E+021.68E+022.65E+02-3.90E-023.96E-017.94E-014.77E-012.30E+003.89E+001.75E+002.78E+004.52E+00-5.00E-011.43E+012.48E+01006111.5-99.27/29/200814:202.07E+021.01E+021.63E+027.08E-015.39E-018.66E-016.61E-012.23E+003.89E+001.07E+002.46E+004.41E+00NANA 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Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 14 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE 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NAMW67340002339.8-327.310/1/200714:003.90E+021.92E+021.96E+021.42E-013.71E-014.20E-017.29E-013.46E+003.96E+00-1.22E+003.33E+003.50E+003.89E+001.54E+011.76E+01004339.8-327.32/25/200812:004.78E+022.82E+022.86E+02-2.17E-015.53E-016.94E-01-1.58E+003.99E+003.94E+00-7.62E-013.19E+003.43E+005.72E+001.83E+012.09E+01005339.8-327.37/28/200811:185.11E+029.36E+011.30E+02-3.39E-012.28E-015.49E-013.13E-012.21E+003.81E+009.03E-012.25E+003.68E+00-6.94E+001.57E+012.78E+01006339.8-327.311/3/200811:546.69E+022.22E+021.63E+028.08E-024.26E-015.43E-012.23E+006.25E+007.45E+003.65E+006.76E+008.47E+00-8.34E+001.59E+011.88E+01007339.8-327.31/27/200912:445.23E+024.37E+024.39E+022.57E-015.48E-016.31E-014.72E-013.72E+004.19E+00-4.00E-013.41E+003.67E+007.78E+001.68E+011.90E+01MW-10700429.11119/28/200512:003.09E+023.87E+024.20E+02NANANA3.86E+001.16E+018.53E+00NANANANANANAMW-10700129.111112/8/200511:151.28E+024.11E+024.54E+027.65E+001.53E+011.33E+012.55E+007.64E+005.59E+004.11E+001.23E+018.97E+00NANANA00229.11114/18/200611:151.27E+024.11E+024.51E+020.00E+003.90E-014.40E-012.65E+007.94E+005.62E+004.36E+001.31E+019.21E+00NANANA 00329.11116/6/200613:301.05E+021.53E+021.56E+02-2.07E-015.43E-017.13E-011.65E+008.31E+009.24E+00-3.66E-018.36E+009.05E+00NANANA 00532.7110.17/23/200714:188.92E+011.52E+021.70E+021.66E-015.19E-015.87E-018.13E-012.73E+001.60E+001.03E-011.41E+001.60E+00NANAN A00632.7110.14/24/200815:411.91E+028.90E+011.44E+02-6.22E-022.21E-014.42E-01-2.03E+002.78E+004.11E+00-1.38E+002.12E+003.07E+00NANANA00732.7110.15/30/200815:254.62E+019.02E+011.58E+026.62E-025.51E-019.60E-011.22E+001.88E+003.36E+005.48E-012.20E+003.57E+00NANAN AMW-1080038.36.29/29/200512:003.32E+023.84E+024.20E+02NANANA3.23E+009.70E+007.39E+003.21E+009.64E+007.84E+00NANANAMW-1080048.36.211/3/200512:001.97E+024.26E+024.76E+02NANANA3.41E+001.02E+017.53E+002.65E+007.95E+006.39E+00NANANA0028.36.25/13/200610:532.78E+021.82E+021.68E+026.89E-018.26E-018.08E-013.12E+008.86E+001.05E+01-1.45E-011.23E+011.34E+01NANANAMW-1090038.56.19/29/200512:001.54E+023.81E+024.20E+02NANANA3.74E+001.12E+018.45E+003.19E+009.57E+007.88E+00NANANAMW-1090048.56.111/3/200512:001.01E+024.23E+024.76E+02NANANA3.59E+001.08E+017.89E+002.59E+007.78E+006.26E+00NANANA0028.56.15/13/200610:103.39E+021.89E+021.70E+022.98E-018.24E-019.27E-012.00E-015.68E+006.24E+00-2.50E+006.12E+006.08E+00NANANAMW-11100114.14.89/29/200510:002.15E+052.26E+034.20E+02NANANA4.48E+001.34E+011.02E+011.81E+005.42E+005.57E+00NANANAMW-111 00114.14.89/29/200510:002.05E+052.56E+046.24E+02NANANANANANANANANANANANA 00214.14.810/14/200510:006.81E+034.73E+036.41E+02NANANANANANANANANANANANA 00314.14.810/21/200510:002.84E+053.05E+046.41E+02NANANANANANANANANANANANA 00414.14.810/28/20058:302.18E+056.54E+037.00E+02NANANANANANANANANANANANA 00514.14.811/4/20059:003.02E+059.06E+037.00E+02NANANANANANANANANANANANA 00614.14.811/22/200510:001.80E+055.40E+037.00E+02NANANANANANANANANANANANA 00714.14.812/2/200510:151.25E+053.75E+037.00E+02NANANANANANANANANANANANA 00814.14.812/8/200516:502.71E+058.13E+037.00E+02NANANANANANANANANANANANA 00914.14.812/15/200511:002.96E+058.88E+037.00E+02NANANANANANANANANANANANA 01014.14.812/19/20059:451.92E+055.76E+037.00E+02NANANANANANANANANANANANA 01114.14.812/29/200510:002.12E+056.36E+037.00E+02NANANANANANANANANANANANA 01214.14.81/6/200610:451.13E+053.39E+037.00E+02NANANANANANANANANANANANA 01314.14.81/13/200610:301.99E+055.97E+037.00E+02NANANANANANANANANANANANA 01414.14.81/20/20069:301.19E+053.57E+037.00E+02NANANANANANANANANANANANA 01514.14.81/27/200610:055.78E+051.73E+027.00E+02NANANANANANANANANANANANA01614.14.82/3/200612:202.95E+053.09E+046.33E+02NANANANANANANANANANANANAJ:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 15 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION01714.14.82/7/200616:102.38E+052.78E+046.37E+021.17E+006.03E-016.31E-01NANANANANANANANANA 01814.14.82/16/200613:402.94E+053.09E+046.36E+02NANANANANANANANANANANANA 01914.14.83/3/20069:002.36E+057.08E+037.00E+02NANANANANANANANANANANANA 02014.14.84/7/20069:501.45E+054.35E+037.00E+02NANANANANANANANANANANANA 02114.14.85/17/200614:054.31E+046.51E+039.10E+022.49E+001.40E+001.24E+00-2.32E-011.34E+011.51E+014.25E+001.30E+011.49E+01NANANA 02214.14.86/23/20068:352.62E+053.92E+042.35E+036.23E-011.07E+001.32E+00-4.18E+001.40E+011.46E+01-1.60E-011.38E+011.52E+01NANANA 02314.14.89/21/200610:251.59E+052.07E+041.42E+038.79E-011.25E+001.33E+009.50E-021.13E+001.26E+00-6.26E-021.15E+001.24E+00NANANA02416.52.46/15/200714:171.19E+053.69E+033.52E+029.74E-016.30E-015.76E-01-7.53E-013.27E+003.00E+001.21E-012.79E+003.17E+006.34E+001.26E+011.43E+0102516.52.48/3/20079:539.88E+042.93E+033.68E+029.74E-016.73E-016.27E-014.24E-012.75E+003.15E+003.95E-012.60E+003.02E+00NANANA 02616.52.41/28/200811:384.77E+041.77E+032.97E+022.56E+009.45E-016.18E-012.60E+004.05E+003.90E+00-6.32E-012.55E+002.63E+001.33E+011.58E+011.73E+0102716.52.49/4/200814:007.39E+041.89E+035.47E+021.02E+003.62E-014.21E-01-8.16E-012.22E+003.61E+01NANANANANANA 02816.52.410/21/200814:206.64E+042.00E+032.60E+029.08E-019.32E-019.72E-01-9.35E-013.60E+003.79E+005.10E-014.32E+005.03E+00NANAN AU3-4D00721.7-14.710/16/200512:003.70E+024.05E+024.38E+02NANANA4.72E+001.41E+011.01E+013.72E+001.12E+018.50E+00NANANAU3-4D00821.7-14.710/21/200512:003.99E+023.90E+024.27E+02NANANA3.11E+009.34E+006.58E+002.98E+008.95E+006.58E+00NANANA 009217-147 10/28/200512:00405E+02429E+02472E+02 NA NA NA391E+00117E+01854E+00436E+00131E+01984E+00 NA NA NA 009 21.7-14.7 10/28/200512:00 4.05E+02 4.29E+02 4.72E+02 NA NA NA 3.91E+00 1.17E+01 8.54E+00 4.36E+00 1.31E+01 9.84E+00 NA NA NA01221.7-14.711/18/200512:001.10E+024.35E+024.81E+02NANANA3.04E+009.13E+006.67E+002.04E+006.11E+004.97E+00NANANA01321.7-14.712/2/200512:002.73E+024.23E+024.64E+02NANANA2.97E+008.92E+006.62E+002.00E+006.01E+005.05E+00NANANA 00121.7-14.712/15/200513:103.99E+024.32E+024.70E+02NANANA2.73E+008.20E+006.05E+002.88E+008.64E+006.66E+00NANANA 00221.7-14.712/30/20059:254.42E+024.35E+024.71E+02NANANA3.53E+001.06E+017.76E+003.96E+001.19E+018.99E+00NANANA 00321.7-14.71/12/200611:005.73E+024.38E+024.72E+02NANANA3.29E+009.86E+007.12E+003.42E+001.03E+017.75E+00NANANA 00421.7-14.72/15/200613:452.71E+029.39E+026.36E+02NANANANANANANANANANANANA 00621.7-14.74/26/200614:205.75E+022.19E+021.87E+02-1.48E-016.11E-017.91E-01-3.01E-018.38E+009.11E+00-3.10E+008.21E+008.71E+00NANANA01421.7-14.76/22/200610:207.10E+022.15E+021.68E+021.27E-015.73E-017.39E-01-2.41E+001.15E+011.21E+01-2.08E+008.42E+008.34E+00NANANA01525.6-10.82/1/200812:403.75E+021.36E+021.35E+02-1.78E-017.83E-019.77E-012.83E-012.69E+003.10E+001.41E+003.26E+003.97E+00NANAN A01625.6-10.84/29/200813:273.19E+021.43E+022.22E+021.44E-012.76E-014.94E-015.15E-011.91E+003.36E+00-1.53E-011.73E+002.91E+00NANA NA01725.6-10.87/28/200816:464.66E+022.50E+023.79E+02-3.57E-014.96E-019.81E-012.89E-012.08E+003.62E+004.78E-012.36E+003.69E+00NANA NA01825.6-10.810/20/200814:405.68E+021.71E+021.64E+02-8.59E-028.61E-011.11E+003.53E-014.62E+005.17E+007.12E-014.13E+004.79E+00NANANA01025.6-10.811/4/200812:001.18E+024.23E+024.76E+02NANANA3.17E+009.51E+006.90E+003.34E+001.00E+017.54E+00NANANA 01125.6-10.811/10/200812:003.16E+024.14E+024.61E+02NANANA4.10E+001.23E+018.95E+004.07E+001.22E+019.41E+00NANANA 01925.6-10.82/10/200914:154.82E+022.31E+021.97E+021.00E-015.16E-016.41E-013.86E-012.66E+003.00E+007.53E-013.02E+003.39E+00NANAN AU3-T1 60075.72.810/7/200512:001.59E+034.20E+024.15E+02NANANA2.71E+008.14E+006.09E+002.77E+008.30E+006.55E+00NANANAU3-T160085.72.810/21/200512:003.09E+023.87E+024.27E+02NANANA3.92E+001.18E+018.66E+003.87E+001.16E+019.03E+00NANANA0095.72.810/28/200512:003.40E+024.29E+024.72E+02NANANA3.55E+001.06E+018.06E+005.35E+001.61E+011.23E+01NANANA 0105.72.811/4/200512:001.97E+024.29E+024.76E+02NANANA4.01E+001.20E+018.86E+003.90E+001.17E+019.13E+00NANANA 0115.72.811/10/200512:005.63E+024.26E+024.61E+02NANANA3.11E+009.32E+006.89E+002.97E+008.92E+006.99E+00NANANA 012 57 28 11/18/200512:00000E+00429E+02481E+02 NA NA NA390E+00117E+01839E+00340E+00102E+01771E+00 NA NA NA 012 5.7 2.8 11/18/200512:00 0.00E+00 4.29E+02 4.81E+02 NA NA NA 3.90E+00 1.17E+01 8.39E+00 3.40E+00 1.02E+01 7.71E+00 NA NA NA0135.72.812/2/200512:004.98E+024.29E+024.64E+02NANANA2.80E+008.39E+006.23E+002.94E+008.83E+006.86E+00NANANA 0015.72.812/15/200513:153.40E+024.29E+024.70E+02NANANA2.53E+007.60E+005.63E+002.89E+008.67E+006.65E+00NANANA 0025.72.812/30/200510:405.29E+024.38E+024.71E+02NANANA4.02E+001.21E+018.71E+004.07E+001.22E+019.17E+00NANANA 0035.72.81/12/20069:507.87E+024.47E+024.72E+02NANANA3.10E+009.31E+006.88E+002.83E+008.49E+006.70E+00NANANA 0045.72.82/15/200613:158.35E+021.65E+036.36E+02NANANANANANANANANANANANA 0055.72.83/16/200611:501.26E+032.79E+021.85E+026.55E-018.43E-018.29E-011.06E+005.49E+006.18E+00-1.81E-015.63E+006.14E+00NANANA 0065.72.85/26/200613:307.32E+022.33E+021.89E+021.27E+001.02E+001.01E+001.21E+008.34E+009.42E+005.99E+008.98E+001.15E+01NANANA 0145.72.87/12/200612:506.84E+022.36E+021.98E+023.36E-011.36E+001.44E+001.15E+001.13E+011.18E+01-1.14E+001.18E+011.26E+01NANANA 0155.72.88/15/200611:307.66E+022.25E+021.73E+02NANANA-4.04E+006.82E+006.33E+002.15E+006.84E+008.29E+00NANANA 0165.72.86/12/200712:545.06E+024.25E+024.39E+026.25E-018.75E-019.54E-01-8.51E-022.94E+002.22E+007.17E-012.00E+002.33E+00-1.46E+001.40E+011.63E+010175.72.88/1/200713:204.90E+023.38E+022.73E+025.21E-025.13E-016.47E-018.49E-013.57E+004.15E+002.88E-013.42E+003.92E+00NANANA 0185.72.810/22/200716:135.30E+024.01E+024.01E+023.41E-015.49E-016.09E-01-1.08E+003.44E+003.64E+00-1.34E+003.52E+003.68E+00NANAN A0195.72.81/22/200816:117.29E+023.27E+022.96E+026.26E-017.26E-017.69E-011.21E+003.14E+003.76E+00-1.79E-013.56E+003.93E+008.87E+001.85E+012.09E+010195.72.81/22/200816:116.05E+023.15E+022.97E+026.43E-017.41E-017.79E-011.11E+002.75E+003.21E+002.38E-012.51E+002.75E+001.14E+011.65E+011.84E+010205.72.85/2/200815:247.09E+021.63E+022.22E+027.24E-015.19E-018.26E-012.85E-011.84E+003.19E+00-1.15E+001.87E+002.82E+00NANANA 0215.72.87/23/200811:165.56E+022.58E+023.79E+026.40E-015.19E-018.37E-012.41E+002.24E+004.18E+006.54E-012.44E+004.01E+00NANANA 0225.72.810/20/200810:195.99E+025.63E+025.91E+027.01E-015.47E-015.20E-012.51E+006.27E+007.46E+001.51E+006.24E+007.35E+00NANANA 0235.72.81/28/200912:006.75E+022.48E+022.04E+021.04E+007.47E-017.44E-01-1.53E+003.59E+002.95E+00-6.63E-012.30E+002.48E+00NANANAU3-T20125.72.610/7/200512:007.03E+023.93E+024.15E+02NANANA3.67E+001.10E+018.06E+004.13E+001.24E+019.39E+00NANANAU3-T20135.72.610/21/200512:001.47E+033.63E+024.27E+02NANANA3.33E+001.00E+017.23E+003.00E+009.00E+006.90E+00NANANA 014 57 26 10/28/200512:00128E+03456E+02472E+02 NA NA NA344E+00103E+01767E+00428E+00128E+01989E+00 NA NA NA 014 5.7 2.6 10/28/200512:00 1.28E+03 4.56E+02 4.72E+02 NA NA NA 3.44E+00 1.03E+01 7.67E+00 4.28E+00 1.28E+01 9.89E+00 NA NA NA0155.72.611/4/200512:001.19E+034.59E+024.76E+02NANANA3.41E+001.02E+017.53E+003.86E+001.16E+018.81E+00NANANA0165.72.611/10/200512:001.64E+034.59E+024.61E+02NANANA3.81E+001.14E+018.34E+003.98E+001.19E+019.09E+00NANANA 0175.72.611/18/200512:001.13E+034.65E+024.81E+02NANANA3.97E+001.19E+018.70E+004.15E+001.25E+019.55E+00NANANA 0185.72.612/2/200512:001.33E+034.56E+024.64E+02NANANA2.31E+006.92E+005.23E+002.58E+007.74E+006.11E+00NANANA 0015.72.612/15/200513:301.29E+034.62E+024.70E+02NANANA2.77E+008.30E+006.09E+002.85E+008.55E+006.57E+00NANANA 0025.72.612/30/200510:501.69E+034.74E+024.71E+02NANANA3.81E+001.14E+018.46E+003.49E+001.05E+018.31E+00NANANA 0035.72.61/6/20068:452.42E+034.92E+024.66E+02NANANA2.86E+008.57E+006.56E+004.04E+001.21E+019.38E+00NANANA 0045.72.61/13/200613:201.78E+034.77E+024.72E+02NANANA4.01E+001.20E+018.74E+003.41E+001.02E+017.94E+00NANANA 0055.72.61/20/200611:001.75E+034.56E+024.61E+02NANANA3.40E+001.02E+017.71E+003.27E+009.82E+007.99E+00NANANA 0065.72.61/25/200611:102.32E+034.86E+024.61E+02NANANA3.96E+001.19E+018.77E+003.17E+009.50E+007.64E+00NANANA 0075.72.62/1/200611:152.13E+034.80E+024.60E+02NANANA3.17E+009.51E+007.02E+003.47E+001.04E+017.99E+00NANANA 0095.72.62/17/20069:201.92E+032.50E+036.36E+02NANANANANANANANANANANANA 0105.72.63/16/200612:001.69E+033.36E+022.04E+025.87E-019.21E-011.00E+00-7.43E-016.36E+006.83E+00-1.22E-016.33E+006.88E+00NANANA0115.72.65/26/200613:151.90E+033.86E+022.48E+021.49E+001.11E+001.01E+001.64E+001.01E+011.22E+015.67E+009.40E+001.25E+01NANANAJ:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 16 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION0195.72.67/12/200612:251.83E+033.78E+022.54E+027.24E-011.72E+001.80E+002.58E+006.90E+008.07E+001.30E+006.69E+007.74E+00NANANA0205.72.68/15/200610:301.58E+037.79E+027.72E+02NANANA-8.87E-017.17E+007.64E+003.29E+009.10E+001.14E+01NANANA0215.72.66/12/20079:251.45E+035.19E+024.36E+02-3.89E-017.05E-019.59E-012.03E-012.29E+002.54E+00-1.00E-012.42E+002.74E+005.88E+001.39E+011.57E+010225.72.68/1/200714:141.25E+034.62E+022.55E+02-4.84E-025.37E-017.11E-01-1.75E+003.23E+003.20E+001.99E-023.54E+004.00E+00NANANA 0235.72.610/22/200715:071.17E+034.76E+024.02E+022.36E-015.28E-016.08E-01-7.13E-022.82E+003.11E+002.53E+003.50E+023.81E+00NANANA 0245.72.61/22/200816:161.33E+033.83E+022.97E+024.31E-018.54E-019.63E-017.39E-012.97E+003.39E+00-1.14E+003.39E+002.86E+002.78E+001.62E+011.89E+010255.72.65/2/200814:441.02E+031.77E+022.22E+026.52E-013.31E-014.70E-015.80E-012.06E+003.53E+007.90E-011.63E+003.00E+00NANANA 0265.72.67/23/200813:409.97E+022.85E+023.64E+025.90E-015.19E-018.44E-013.57E-021.72E+002.93E+00-1.02E+002.44E+003.39E+00NANANA 0275.72.610/20/200810:369.28E+025.97E+025.90E+024.73E-014.95E-014.85E-01-4.68E-014.82E+005.31E+00-5.02E+006.54E+006.06E+00NANAN A0285.72.61/28/200911:401.11E+032.87E+022.04E+026.04E-016.41E-016.75E-017.10E-012.42E+002.74E+004.09E-012.30E+002.61E+00NANANAU1-CSS001146.11/30/200711:451.76E+036.00E+025.70E+021.95E+012.19E+001.70E+007.00E-011.32E+001.40E+00-3.20E-011.38E+001.60E+001.64E+012.67E+012.90E+01U1-CSS002146.12/27/200711:244.32E+036.90E+025.70E+021.38E+012.31E+002.10E+001.11E+001.95E+002.10E+007.00E-011.95E+002.20E+00-1.30E+002.55E+012.90E+01003146.16/13/200711:391.53E+035.25E+024.35E+021.45E+011.91E+006.24E-018.50E-013.57E+004.15E+002.82E+004.28E+004.93E+004.42E+001.95E+012.22E+01004146.18/6/200715:552.80E+032.81E+021.95E+022.68E+012.33E+005.71E-012.53E+004.30E+004.61E+002.48E+006.84E+004.17E+00NANANA 005 14 61 1/15/200814:54495E+02204E+02176E+02773E+00131E+00691E-01285E+00656E+00336E+00-688E-02333E+00371E+00 NA NA NA 005 14 6.1 1/15/200814:54 4.95E+02 2.04E+02 1.76E+02 7.73E+00 1.31E+00 6.91E-01 2.85E+00 6.56E+00 3.36E+00-6.88E-02 3.33E+00 3.71E+00 NA NA NA006146.14/23/200815:251.77E+031.96E+021.44E+026.74E+009.01E-017.19E-01-1.36E+002.12E+003.20E+00-7.61E-012.08E+003.16E+00NANANA 007146.15/12/200814:056.88E+021.35E+021.42E+024.83E+008.35E-019.25E-012.59E+002.30E+004.25E+003.09E-012.58E+003.96E+00-2.18E+001.19E+012.08E+01008146.19/8/200810:241.45E+033.77E+024.98E+029.38E+009.40E-015.43E-011.90E+002.07E+003.76E+00NANANANANANA 009146.111/6/200814:482.66E+033.86E+021.66E+026.74E+001.20E+005.33E-013.52E+006.01E+007.29E+00-1.94E+006.45E+006.67E+001.02E+011.65E+011.85E+01010146.111/19/200813:502.20E+032.33E+021.62E+029.08E+001.38E+005.80E-012.35E+004.04E+004.98E+008.56E-014.63E+005.37E+00NANANAU1-NCD0015/8/20089:459.50E+033.49E+021.96E+023.97E+022.58E+003.57E-01NANANANANANANANANAU1-NCD00210/15/200812:356.19E+033.71E+021.61E+024.35E+025.89E+003.33E-01NANANANANANANANANA 0031/12/200913:452.13E+032.48E+021.92E+024.64E+028.90E+006.61E-012.84E+042.63E+031.22E+017.66E-012.37E+002.80E+006.41E+024.11E+011.89E+01U1-SFDS0014/9/20088:556.28E+021.41E+021.97E+029.98E+004.86E-014.31E-01NANANANANANANANANAU1-SFDS0025/8/20089:108.81E+021.50E+021.96E+021.40E+015.18E-013.69E-01NANANANANANANANANA 00310/15/200812:451.09E+031.79E+021.67E+021.85E+011.26E+004.56E-01NANANANANANANANANA 0041/14/20099:153.11E+021.82E+021.93E+021.22E+011.67E+008.15E-016.39E+003.47E+002.22E+001.03E+001.91E+002.27E+007.26E+001.62E+011.83E+01RW-1001107.5-3010/25/200611:376.41E+044.88E+038.52E+02-8.44E-011.29E+001.52E+009.50E-014.75E+005.45E+008.01E-014.62E+005.32E+00NANANARW-1002107.5-3010/25/200614:152.95E+042.28E+035.85E+023.10E-018.79E-019.23E-011.99E+005.23E+005.98E+004.31E-014.74E+005.22E+00NANAN A005107.5-3010/31/200620:001.89E+041.49E+034.73E+029.06E-011.15E+001.14E+005.93E-014.51E+005.21E+001.65E+005.31E+006.60E+00NANAN A004107.5-3010/31/200615:552.63E+042.04E+035.51E+02-1.06E+001.15E+001.39E+00-2.26E-013.86E+003.99E+00-6.22E-032.86E+003.21E+00NANANA003107.5-3010/31/200612:271.07E+058.06E+031.10E+03-3.70E-019.51E-011.09E+007.18E-014.23E+004.71E+007.34E-013.04E+003.61E+00NANA NA006107.5-3011/1/200612:001.84E+041.45E+034.66E+023.64E-011.03E+001.08E+00-3.39E+004.14E+003.90E+00-5.25E-014.01E+004.19E+00NANA NA007107.5-3011/2/200612:002.40E+042.13E+031.00E+031.50E-016.00E-016.70E-011.12E+002.37E+002.60E+00-8.50E-012.37E+002.90E+00NANAN A008107.5-3011/3/20069:003.06E+042.34E+031.00E+034.80E-017.20E-017.80E-01-1.05E+002.19E+002.60E+008.20E-012.40E+002.70E+00NANANAMH-5 7 001 6/29/200712:15141E+03233E+02187E+02-326E-01621E-01920E-01-957E-01340E+00360E+00639E-02313E+00349E+00 NA NA NA MH-57 MH-5 001 6/29/200712:15 1.41E+03 2.33E+02 1.87E+02-3.26E-01 6.21E-01 9.20E-01-9.57E-01 3.40E+00 3.60E+00 6.39E-02 3.13E+00 3.49E+00 NA NA NA MH-570028/10/200715:151.17E+035.21E+024.56E+023.17E-027.84E-019.38E-01-5.40E-013.17E+002.87E+00-8.50E-012.84E+002.93E+00NANANA 00310/26/200713:301.62E+032.30E+021.84E+021.60E-016.06E-017.10E-012.15E-012.64E+002.95E+00-6.20E-012.90E+003.06E+00NANANA 0041/16/200812:309.28E+022.45E+021.77E+024.62E-018.33E-019.37E-015.23E-012.78E+003.09E+005.97E-012.55E+002.90E+00NANANALAF-002001-22.36/6/200612:473.98E+013.60E+026.98E+021.38E+001.85E+001.93E+00-3.88E+001.53E+001.59E+00-2.24E+001.25E+011.34E+01-2.84E-012.13E+012.34E+01LAF-002001-22.36/6/200612:475.20E+011.71E+021.83E+02NANANANANANANANANANANANA003-22.39/19/200613:14-4.71E+011.50E+021.70E+02-5.08E-018.90E-011.07E+006.45E-029.05E+001.01E+00-2.76E+006.35E+004.99E+00NANANA 004-22.312/4/200613:38-1.20E+011.62E+021.60E+02-1.20E-017.80E-018.50E-01NANANA9.00E-015.40E+006.30E+00-2.50E+007.20E+008.10E+00 005-22.33/7/200714:45-8.30E+011.56E+021.60E+028.20E-011.50E+001.60E+003.10E+004.80E+005.10E+00-1.20E+005.40E+007.30E+00NANANA 006-22.36/7/200713:18-6.85E+001.33E+021.54E+023.19E-016.02E-016.79E-017.80E-012.63E+003.04E+006.55E-012.60E+003.04E+00NANANA 007-22.310/9/20079:357.46E+011.37E+021.55E+024.43E-014.98E-015.18E-01-5.45E-012.10E+001.69E+00-1.44E+001.78E+001.39E+00NANANA 008-22.312/4/200710:509.00E+011.46E+021.62E+024.89E-016.20E-016.62E-01-6.91E-014.59E+004.37E+00-2.35E+003.72E+003.39E+00NANANA 009-22.34/10/20080:004.65E+018.46E+011.44E+024.73E-013.02E-014.56E-011.91E+002.14E+003.95E+001.61E+002.46E+004.56E+00NANANA 010-22.310/17/200810:328.19E+011.55E+021.74E+024.05E-017.90E-019.01E-012.36E-012.76E+003.16E+00-3.08E-023.09E+003.46E+00-4.61E+002.01E+012.35E+01B-1 70016/29/200712:357.93E+022.07E+021.89E+02-3.83E-016.75E-019.80E-010.00E+007.04E+004.44E+00-9.13E-013.30E+003.40E+00NANANAB-170028/14/200711:301.10E+032.25E+021.90E+021.29E-025.93E-017.38E-010.00E+006.71E+003.93E+009.94E-013.54E+004.16E+00NANANA00310/22/200714:491.10E+034.68E+024.01E+02-1.56E-013.72E-015.51E-011.68E+015.82E+003.82E+001.33E+003.23E+003.53E+00NANANA 0041/22/200813:082.27E+021.61E+021.71E+021.29E-015.00E-016.12E-013.13E-012.54E+002.83E+00-9.46E-022.72E+003.01E+00NANANA 0054/18/200818:251.17E+031.57E+022.01E+02-1.14E-013.81E-017.82E-012.00E+013.70E+003.07E+00-2.48E-011.76E+002.97E+00NANANAB-6 70017/5/20079:004.03E+021.67E+021.69E+021.01E-014.97E-015.67E-011.29E+003.46E+004.04E+001.09E+003.51E+004.15E+00NANANAB-670028/14/20078:305.46E+011.68E+021.92E+02-3.06E-016.20E-018.32E-015.63E-012.97E+003.42E+00-2.88E+003.31E+002.35E+00NANANA

//00310/22/200711:301.07E+021.70E+021.90E+02-7.54E-024.34E-015.83E-012.39E+002.33E+003.04E+001.04E+002.46E+003.05E+00NANANA0041/16/200816:504.72E+022.04E+021.79E+021.05E-017.05E-018.83E-013.96E+004.41E+003.32E+001.29E+003.15E+003.66E+00NANANA0054/25/200814:155.23E+018.45E+011.43E+02-1.20E-012.59E-015.25E-01-2.89E-011.96E+003.24E+00-7.50E-013.43E+004.21E+00NANANANotes:1. For nested multi-level monitoring wells, suffix of well ID indicates depth (rounded to nearest foot) from reference point on casing to bottom of well screen. For Waterloo multi-level systems, suffix indicates depth (rounded to nearest foot) from reference point on casing to top of sampling port. Well IDs without a suffix are open bedrock wellbores.2. Sampling depths within sampling intervals (location of pump intake) have been established at location of most transmissive zone to the extent possible.3. NA indicates that the constituent was not analyzed.

4. Current well identifications are shown for each location. Minor name changes have been made based on altered transducer installations. 5. Dot pattern denotes sampling interval is positioned within overburden soils. Open box indicates sampling interval is in bedrock.6. At monitoring well U3T1, sample IDs 019-B, 019-D, and 019-S were collected for laboratory and field QAQC (B=Blind, D=Duplicate, S-Spike). Only the duplicate sample results were included in the calculations for rolling averages.7. These locations are storm drains, not monitoring wells.J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 17 of 17See Page 17 for Notes FINAL QUARTERLY LONG-TERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

FIGURES Figure 1 Site Location Plan Figure 2 Site Plan Figure 3 Lower Hudson Valley Geologic Map Figure 4 Current and Potentia l Future SSC Source Locations Figure 4A Unit 3 - Cross-Section C-C" Figure 5 1st Quarter 2009 Shallow and Deep Groundwater Contours Figure 5A 1 st Quarter 2009 Long-Term Transducer Monitoring Evaluation Map Figure 6 1st Quarter 2009 Average Tritium Activity Map Figure 7 1st Quarter 2009 Average Strontium-90 Activity Map Figure 7A Sr-90 Baseline Analysis - Unit 1 Defueling Evaluation Figure 8 1st Quarter 2009 Average Cesium, Cobalt, and Nickel Activity Map

0 2 , 0 0 0 4 , 0 0 0 1 , 0 0 0 F e e t S i t e L o c a t i o n D w g. D a t e: F i g u r e N o.: J o b N o.: P r o j. M g r.: M J B D e s i g n e d B y: M J B R e v i e w e d B y: M J B O p e r a t o r: G A S 0 1.0 0 1 7 8 6 9.9 1 0 5-2 0-2 0 0 9 1 I N D I A N P O I N T E N E R G Y C E N T E R B U C H A N A N , N E W Y O R K G Z A G e o E n v i r o n m e n t a l , I n c.O n e E d g e w a t e r D r i v e N o r w o o d , M A 0 2 0 6 2 P h o n e: (7 8 1) 2 7 8-3 7 0 0 F a x: (7 8 1) 2 7 8-5 7 0 1 S I T E L O C U S P L A N J:\1 7 , 0 0 0-1 8 , 9 9 9\1 7 8 6 9\1 7 8 6 9-9 1.M G\F i g u r e s\G I S\M X D D o c u m e n t s\Q 1_2 0 0 9\1 7 8 6 9-9 1_1_S i t e L o c a t i o n P l a n.m x d T r a n s.T r a n s f o r m e r a r e a a n d s w i t c h g e a r T a n k T r a n s f o r m e r y a r d T a n k 3 0 3 0 7 0 8 0 9 0 8 0 7 0 9 0 8 0 T a n k T a n k T a n k C o n d e n s a t e T a n k T r a n s f o r m e r s o n r a i s e d C o n c r e t e P a d T r a n s.T r a n s f o r m e r s C o n c r e t e s l a b T a n k T r a n s f o r m e r s o n r a i s e d C o n c r e t e P a d T a n k S t o r a g e T a n k T r a n s f o r m e r S u b s t a t i o n " H" T r a i l e r T r a n s T a n k S t o r a g e T a n k T a n k P i t T r a n s T r a n s T r a n s S t o r a g e T a n k s T r a n s f o r m e r s Y a r d (G r a v e l)D I S C H A R G E O U T F A L L C A N A L T u r b i n e G e n e r a t o r B u i l d i n g 2 T u r b i n e G e n e r a t o r B u i l d i n g 1 T u r b i n e G e n e r a t o r B u i l d i n g 3 T r a n s f o r m e r Y a r d P r i m a r y A u x i l l i a r y B u i l d i n g R e a c t o r W a t e r S t o r a g e T a n k U N I T 2 U N I T 1 U N I T 3 H u d s o n R i v e r D i s c h a r g e C a n a l U n i t 1 S c r e e n w e l l H o u s e C o n d e n s a t e P o l i s h e r B u i l d i n g I n t a k e S t r u c t u r e H e a t e r B a y A u x.B o i l e r B u i l d i n g A d m i n i s t r a t i o n B u i l d i n g D i s c h a r g e C a n a l T r a n s f o r m e r Y a r d P r i m a r y A u x i l l i a r y B u i l d i n g S u p e r h e a t e r / A d m i n. B u i l d i n g N u c l e a r S e r v i c e B u i l d i n g F u e l S t o r a g e B u i l d i n g C h e m. S e r v i c e F u e l P o o l F u e l S t o r a g e B u i l d i n g O u t f a l l M O B C u r t a i n D r a i n S t a c k S p h e r e F o u n d a t i o n D r a i n S u m p R e a c t o r W a t e r S t o r a g e T a n k T a n k P i t F P T P r e s s u r e W a t e r S t o r a g e T a n k P a s s i v e W a t e r S t o r a g e T a n k C u r t a i n D r a i n A n n u l u s F u e l P o o l F u e l P o o l C o n t a i n m e n t S p r a y S u m p F P T C h e m. S y s.F o u n d a t i o n D r a i n S C D N C D U t i l i t y T u n n e l U t i l i t y T u n n e l J:\1 7 , 0 0 0-1 8 , 9 9 9\1 7 8 6 9\1 7 8 6 9-9 1.M G\F i g u r e s\G I S\M X D D o c u m e n t s\Q 1_2 0 0 9\1 7 8 6 9-9 1_2_S i t e P l a n.m x d L E G E N D 5 0 0 5 0 1 0 0 1 5 0 2 5 F e e t P l a n t N o r t h N N S t o r m D r a i n S t o r m D r a i n - C o n n e c t i o n T e r m i n a t e d F o o t i n g / C u r t a i n D r a i n F i g u r e N o.: J o b N o.: D w g. D a t e: P r o j. M g r.: D M W D e s i g n e d B y: M J B/D M W R e v i e w e d B y: D M W O p e r a t o r: G A S/E M D 0 1.0 0 1 7 8 6 9.9 1 0 5-2 0-2 0 0 9 2 I N D I A N P O I N T E N E R G Y C E N T E R B U C H A N A N , N E W Y O R K G Z A G e o E n v i r o n m e n t a l , I n c.O n e E d g e w a t e r D r i v e N o r w o o d , M A 0 2 0 6 2 P h o n e: (7 8 1) 2 7 8-3 7 0 0 F a x: (7 8 1) 2 7 8-5 7 0 1 S I T E P L A N

FINAL IPEC QUART ONG-TERM GRO RT INDIAN POI Y CENTER EAR N ORTHEAST , I NC. Y ORK 10511 ON BEHALF OF: , I NC. TER 10511-0308 PREPARED BY: IRONMENTAL OF N EW Y ORK 2010 7869.92 ERLY L UNDWATER MONITORING REPO Q UARTER O NE 2009 (R EPORT N O. 5) NT ENERG BUCHANAN, NEW YORK PREPARED FOR: E NTERGY N UCL I NDIAN P OINT ENERGY CENTER 450 BROADWAY BUCHANAN , N EW ENTERGY S ERVICES I NDIAN P OINT ENERGY C EN 295 BROADWAY , SUITE 3 P.O. BOX 308 BUCHANAN , NY GZA G EO E NV 440 N INTH AVENUE , 18 TH F LOOR N EW YORK , N EW Y ORK 10001 J UNE 22, F ILE N O. 01.001 GZA GeoEnvironmental, Inc. Copyright © 2010 GZA GeoEnvironmental of New York GZA Engineers and GeoEnvironmental, Inc.

Scientists June 22, 2010 File No. 01.0017869.92 Mr. Patrick Donahue Indian Point Energy Center 295 Broadway, Suite 3 P.O. Box 308

Buchanan, NY 10511-0308

Re: FINAL IPEC Quarterly Groundwater Monitoring Report One Edgewater Drive Norwood Massachusetts 02062 781-278-3700 FAX 781-278-5701 http://www.gza.com Quarter One 2009 (Report No. 5)

Indian Point Energy Center 450 Broadway Buchanan, New York 11501

Dear Mr. Donahue:

GZA GeoEnvironmental of New York (GZA) is pleased to provide this Quarterly Groundwater Monitoring Report for Indian Point Energy Center located at 450 Broadway, Buchanan, NY.

We trust that this information satisfies your present needs. Should you need any additional information, please do not hesitate to call us at (781) 278-3805.

Very truly yours, GZA GEOENVIRONMENTAL OF NEW YORK

Josh Simpson Michael Powers, PE Engineer I Consultant/Reviewer

David Rusczyk, PE Matthew J. Barvenik, LSP Senior Project Manager Senior Principal

Attachments: 2 Copies Copyright 2010 GZA GeoEnvironmental, Inc.

FINAL QUARTERLY LONG-TERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

June 22, 2009 Table of Contents 1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 TABLE OF CONTENTS Page 1.0EXECUTIVE

SUMMARY

.................................................................................................... 1-12.0SCOPE OF WORK ............................................................................................................. 2-12.1Groundwater Elevation Measurement

..................................................................... 2-12.2Groundwater Sampling ........................................................................................... 2-12.3Vapor Containment Building Foundation Drain Sampling ....................................... 2-22.4Preventative Maintenance

....................................................................................... 2-32.5Confirmatory Sample Collection

.............................................................................. 2-33.0DATA EVALUATION ......................................................................................................... 3-13.1Groundwater Mass Flux .......................................................................................... 3-13.1.1Groundwater Mass Flux Computation ......................................................... 3-13.1.2Quarterly Groundwater Mass Flux Calibration ............................................ 3-23.2Groundwater Sampling ........................................................................................... 3-43.2.1Groundwater Sampling Results ................................................................... 3-53.3Radionuclide Release Rates ................................................................................... 3-53.4SSCs and Property Boundary Monitoring ............................................................... 3-63.4.1Previous Q4-2008 Investigation Level Exceedances .................................. 3-83.4.2Q1-2009 Boundary Investigation Levels ................................................... 3-103.4.3Q1-2009 SSC Investigation Levels ........................................................... 3-103.4.4Conclusions - Boundary and SSC Leak Detection Monitoring .................. 3-133.5Plume Natural Attenuation Monitoring .................................................................. 3-143.6Unit 2 Spent Fuel Pool Integrity Analysis .............................................................. 3-153.6.1Individual Downgradient Monitoring Well Tritium Analyses ....................... 3-163.6.2Individual Upgradient Monitoring Well Tritium and Tracer Analyses (MW-31 and MW-32)

............................................................................................... 3-193.6.3Tritium Plume Total Activity Analysis ........................................................ 3-213.6.4Collection Box Data ................................................................................... 3-253.6.5Minimum Detectable Leak Rate ................................................................ 3-273.6.6Conclusions - Unit 2 SFP integrity ............................................................ 3-2

74.0CONCLUSION

S AND PLANNED ACTIVITIES ................................................................. 4-1 FINAL QUARTERLY LONG-TERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

June 22, 2009 Table of Contents 2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 TABLES Table 1Groundwater Sampling Methods, Equipment, Frequency, and DepthsTable 22009 1st Quarter Low Tide Groundwater ElevationsTable 32009 1st Groundwater Analytical Results and AveragesTable 42009 1st Quarter Groundwater Analytical ResultsTable 5Historic Groundwater Analytical Results FIGURES Figure 1Site Location PlanFigure 2Site PlanFigure 3Lower Hudson Valley Geologic MapFigure 4Current and Potential Future SSC Source LocationsFigure 4AUnit 3 - Cross-Section C-C"Figure 51st Quarter 2009 Shallow and Deep Groundwater ContoursFigure 5A1 st Quarter 2009 Long-Term Transducer Monitoring Evaluation MapFigure 61st Quarter 2009 Average Tritium Activity MapFigure 71st Quarter 2009 Average Strontium-90 Activity MapFigure 7ASr-90 Baseline Analysis - Unit 1 Defueling EvaluationFigure 81st Quarter 2009 Average Cesium, Cobalt, and Nickel Activity Map APPENDICES Appendix A:LimitationsAppendix B:Transducer Installation LogsAppendix C:Chains of CustodyAppendix D:1st Quarter 2009 Sampling Data SheetsAppendix E:Post-Q1 2009 Mid-Quarter Sampling Data SheetsAppendix F:Dose CalculationsAppendix G:Unit 2 Tritium Plume Trend AnalysesAppendix H:Recent Tracer Testing DataAppendix I:Leak Collection Box DataAppendix J:Lafarge Well LAF-002 RefurbishmentAppendix K:Groundwater Level Transducer Redeployment FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

June 22, 2010 Page 1-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92

1.0 EXECUTIVE

SUMMARY

On behalf of Entergy Nuclear Northeast, Inc., GZA GeoEnvironmental of New York (GZA) has completed the Q1 2009 quarterly groundwater monitoring for the Indian Point Energy Center (IPEC). The radionuclide concentrations measured during Q1 2009 were combined with

previous quarterly data 1 to compute rolling average concentrations reflective of groundwater contaminant levels over the past twelve months. These data were multiplied by the associated individual groundwater flux values, derived from the Precipitation Mass Balance Model, to compute yearly average radionuclide release rates to the Discharge Canal and Hudson River. The Conceptual Site Model (CSM) continues to be validated through: 1) the ongoing verification of the Precipitation Mass Balance Model calibration, as based on groundwater elevation data collected in 2007, 2008, and 2009 2; 2) the behavior of both the Unit 1 Strontium plume and the Unit 2 Tritium plume; and additional tracer data collected in 2008/2009. Based on the quarterly groundwater sampling data for Q1 2009, GZA concludes that groundwater contaminants continue to migrate toward the Hudson River to the West, and have not migrated off the Site to the North, East or South. The Q1 2009 data indicate that the Unit 2 Tritium and Unit 1 Strontium plumes contain radionuclide levels that are generally at or below those measured during previous quarterly monitoring events. We therefore conclude that no new leaks to groundwater have been detected in the Structures, Systems and Components (SSCs) monitored, with two exceptions. The first exception involves the temporary, increased leakage from the Unit 1 Spent Fuel Pool Complex (SFPs), as anticipated during the final removal of the residual fuel rods for ISFSI storage. This additional leakage during defueling was verified by the Long Term Monitoring Program, with measurement of a pronounced increase in radionuclide levels in the groundwater immediately downgradient of the Unit 1 SFPs. The second exception involves the detection of leakage from valves associated with the waste distillation tanks, which contain elevated levels of Tritium, located to the east of the Unit 1 Fuel Storage Building (FSB). While these valves are located within the FSB and the leak was initially detected visually and quickly repaired, this leakage was also independently detected by the Long Term Monitoring Program, with the measurement of a pronounced increase in Tritium levels in the groundwater proximate to these tanks. These data continue to support the validity of the current CSM for use as a basis for Long Term Monitoring Program design. Based on the Q1 2009 data, as well as that collected during previous quarters, it currently appears that the Tritium I.L.s originally established are somewhat too sensitive relative to natural seasonal/precipitation-driven transient variations in radionuclide activities, as well as the variability inherent in the laboratory analyses. Relative to Strontium from the Unit 1 SFPs, the increases in activity in a number of monitoring points, due to the recent defueling activities, limit our ability to establish Strontium baseline levels for assessment of new I.L.s pursuant to the Monitored Natural Attenuation (MNA) of this plume. It is anticipated that this additional Strontium activity will take a number of quarters to flush through the groundwater flow system 1 In cases where samples were taken in addition to the quarterly samples (e.g., mid-quarter samples associated with refueling events or confirmatory samples to evaluate potentially false results), the additional sample data was included in the yearly averages. Prior to the Q1 09 report, the results of the mid-quarter and confirmatory samples were not included in the yearly average calculation. 2 The formulation and basis for the Precipitation Mass Balance model, as well as the overall CSM, is presented in the Hydrogeologic Site Investigation Report, January 7, 2008, prepared by GZA GeoEnvironmental, Inc, on behalf of Enercon Services, Inc., for Entergy Nuclear Northeast, Indian Point Energy Center, 450 Broadway, Buchanan, NY 10511.

Section 1.0 Executive Summary June 22, 2010 Page 1-2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 and attenuate to reasonably stable levels. .As such, the existing I.L.s will continue to be used until sufficient data is collected to allow re-evaluation. The data further indicate that the Unit 1 and Unit 2 plumes have remained relatively stable over this monitoring period, and thus are exhibiting an overall slowly decreasing trend in radionuclide levels, when the plumes are viewed in their entirety and past release events and expected seasonal variability in the sampling data are accounted for. Furthermore, the overall, continued reduction in Tritium levels in the Unit 2 plume is consistent with a conclusion that the Unit 2 SFP had ceased leaking after the transfer canal "pin hole leak" was repaired in late 2007. As such, the Unit 2 Tritium plume satisfies the requirements for Monitored Natural Attenuation (MNA). In addition to reaching this conclusion through visual inspection of the limited available data, as in previous quarterly reports, more quantitative data analyses have been conducted for inclusion in this Q1 2009 quarterly report 3 (see Section 3.6). The results of these more quantitative analyses support the previous, more qualitative analyses; i.e., that the existing data are consistent with a conclusion that the Unit 2 SFP is no longer leaking. Although these data do not definitively rule out the possibility of a remaining small leak, and while it is not possible to quantify the size of the minimum detectable leak with any degree of certainty, we believe that the maximum leak rate from the Unit 2 SFP that could potentially remain undetected by the groundwater monitoring system is less than 10 to 30 gpd. The primary difficulty in definitively establishing if any leaks remain in the Unit 2 SFP is associated with the episodic release of Tritium from that stored in the subsurface via natural and anthropogenic retention mechanisms

4. The validity of the CSM, which incorporates these storage mechanisms, is now even more certain given the additional tracer test analyses provided herein. Therefore, the ultimate confirmation of the above conclusions will require monitoring over a number of years so as to demonstrate continued depletion of Tritium from the retention mechanisms and allow ranges in seasonal variation to be adequately reflected in the monitoring data. While it is not yet possible to conclude that no leaks of any size remain in the Unit 2 SFP, it is also likely that if a small leak does exist, it is not getting worse with time, as based on liner evaluations previously conducted by Entergy
5. It is further emphasized that while a leak of 10 to 30 gpd should be large enough to be readily detectable with the existing Long Term Monitoring Program, this amount of Tritium release to the river is still small compared to that which is currently permitted for release to the river through the Discharge Canal. Overall, GZA believes that continued monitoring will further demonstrate decreasing long term trends in groundwater contaminant activities over time, for both the Unit 1 and Unit 2 plumes, given the source interdictions completed to date by Entergy.

3 The results of these more quantitative analyses have previously been presented to the NRC during the Deviation Memo Closeout Meeting of August 18 and 19,2009. Additional analyses were then also performed in response to NRC suggestions presented at that meeting. The preparation and finalization of this quarterly report was delayed so as to include these additional analyses. Given the timing of the NRC meeting, some data beyond that associated with Quarter 1 became available and was therefore used to increase the robustness of the associated analyses and is thus included herein. 4 These retention mechanisms are discussed along with the CSM in the previously cited Hydrogeologic Site Investigation Report. 5 As part of the overall Unit 2 SFP liner integrity evaluation, Entergy undertook testing of a number of welds relative to the potential for ongoing corrosion, such as due to Microbial-Influenced Corrosion (MIC). It was concluded that there was no evidence of ongo ing corrosion.

FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

June 22, 2010 Page 2-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92

2.0 SCOPE

OF WORK During Q1 2009, GZA performed groundwater monitoring activities at IPEC in Buchanan, New York (Site) as part of IPEC's overall Long Term Groundwater Monitoring Program (LTMP) at the Site 6. The overall foundation for the development and execution of this LTMP is based on the CSM, a description of which is contained within GZA's Hydrogeologic Site Investigation Report

7. The scope of work completed for this quarter's monitoring is described in the Sections below.

Refer to Figures 1 and 2 for a Site Location Plan and Site Plan. Figure 3 provides a Lower Hudson Valley Geologic Map and Figure 4 summarizes Current and Potential Future SSC Source Locations.

2.1 Groundwater

Elevation Measurement GZA currently maintains transducers and dataloggers as part of the monitoring instrumentation located across the Site

8. These instruments record groundwater elevation and temperature measurements at regular time intervals
9. Transducer installation logs are presented in Appendix B. Following the quarterly sampling, GZA downloaded groundwater elevation data collected by the pressure transducers over the duration of the quarter. Using these data, GZA developed Site groundwater elevation contours at low river tide conditions for the upper and lower portions of

bedrock. These data are presented on Table 2 and Figure 5 for the December 8, 2008 low river tide. The groundwater contour map is used to compute groundwater flow gradients, which are used to provide ongoing calibration of the Precipitation Mass Balance Model (as used in IPEC's radiological dose computations - see Section 3.1). It is anticipated that sufficient seasonal groundwater elevation data will have been collected through the middle of 2009 to verify the suitability of the model for dose computation. As such, it is currently our intent to substantially reduce the scope of groundwater elevation data collection after that time.

2.2 Groundwater

Sampling During Q1 2009, GZA collected groundwater samples for radionuclide analysis from scheduled sampling intervals within select monitoring installations ("wells") as shown in Table 3. In addition, GZA split groundwater samples from select locations between Entergy, the Nuclear Regulatory Commission (NRC), and the New York State Department of Environmental Conservation (NYSDEC). Chains of Custody for samples collected by GZA are presented

in Appendix C. 6 Refer to the "Final Quarterly Long-Term Groundwater Monitoring Report Q2-Q4 2007 (Report No. 1)," dated May 2008 for Site background information and a description of the environmental setting. 7 Hydrogeologic Site Investigation Report, January 7, 2008, prepared by GZA GeoEnvironmental, Inc, on behalf of Enercon Services, Inc., for Entergy Nuclear Northeast, Indian Point Energy Center, 450 Broadway, Buchanan, NY 10511. 8 It is anticipated that subsequent to the Q2 2009 quarterly monitoring report, the transducer monitoring program will be reduced to only a select set of locations that will continue to be routinely monitored with groundwater level transducers. 9 Currently, transducers record groundwater elevation and temperature readings on a 20 minute time interval. However it is anticipated that during the later half of 2009, this time interval may be adjusted.

Section 2.0 Scope of Work June 22, 2010 Page 2-2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 GZA used different types of pumping equipment depending upon the sampling method and the characteristics of the individual monitoring installation

10. Table 1 lists the monitoring installations sampled, the sampling depths and elevations within sampling installations, and the sampling method and equipment used. In general, GZA implemented two basic methods of sampling to collect representative groundwater samples: the Low Flow method and a modified well volume purge method. The Low Flow method allows collection of representative groundwater samples from discrete sampling zones within a monitoring installation, while limiting the accumulation of wastewater
11. As agreed by Entergy Nuclear Northeast, the NRC, NYSDEC, and GZA, the modified traditional purge method 12 allows for the collection of a representative groundwater sample from a monitoring installation after purging 1.5 volumes of water. We implemented this method in wells where low flow sampling was not practical
13. Sampling Data Sheets summarizing water quality data and sampling information are presented in Appendix D. With all of the above sampling methods, GZA used dedicated sampling equipment, including polyethylene and/or nylon tubing and submersible electric pumps to the extent practical. The use of dedicated sampling equipment limits the possibility of cross-contamination between monitoring installations and/or individual multi-level samples within a single installation. Refer to Table 1 for a summary of the sampling methods, equipment, frequency, and depths employed during this quarter's groundwater monitoring round.

2.3 Vapor

Containment Building Foundation Drain Sampling GZA attempted to collect water samples from three manholes (B-1, B-6, and MH-5) on-Site to characterize discharge from foundation drains around and below the Unit 2 and 3 Vapor Containment Structures (the drains include both the foundation drains around the building periphery ("curtain drains") as well as those around the sumps near the middle of the structures). These drains are being used as an integral part of the early leak detection monitoring network. However, due to plant security precautions, GZA was unable to access these sampling points. The manholes at these catch basins are currently welded shut, as they were during the previous quarter (Q4 08). Entergy recently modified the covers of these three manholes to allow access to these sampling locations without compromising plant security and samples were collected from these locations during the Q2-2009 sampling round. Prior to Q3 08, GZA was able to sample the east drain line in manhole MH-5 to capture drainage from the Unit 2 Vapor Containment Foundation Drains. GZA also previously sampled the east drain line in manhole B-1 to capture drainage from the Unit 3 Vapor Containment South Curtain Drain. In addition, GZA sampled the manhole B-6 during earlier sampling quarters to capture drainage from the Unit 3 Vapor Containment North Curtain Drain and Reactor Sump

Foundation Drain

14.

10 Refer to Section 4.3 of the Final 2007 Quarterly Long-Term Groundwater Monitoring Report No. 1, dated May 2008, for sampling method and equipment selection rationale. 11 As described in: Low-Flow Sample Collection, GZA, 7/18/2007 12 As described in: Modified Traditional Groundwater Sample Collection, GZA, 7/18/2007 13 When external factors (such as well-surface-flooding from stormwater runoff or overland flow of plant component leaks) might have infiltrated the top of the well and impacted ambient groundwater conditions at a specific sampling location, GZA typically purged three to five volumes of water (using the modified traditional purge method) prior to collection of a sample to attempt to obtain a representative groundwater sample. 14 During early attempts to collect a discrete sample specifically representative of the east drain line in B-6, this catch basin was used as a clean water discharge point for some unidentified plant work. As a result, the height of the water within the manhole was Section 2.0 Scope of Work June 22, 2010 Page 2-3 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92

2.4 Preventative

Maintenance GZA performed general wellhead maintenance tasks, such as housekeeping of well vaults and roadboxes, and replacement of dedicated sampling equipment, tubing and transducers. In addition, LaFarge well LAF-002 (also initially referred to as MW-2), located at the LaFarge Gypsum Property to the south of Indian IPEC, was refurbished between November 24 th and 25 th, 2008. This well has been incorporated as a boundary well within the Long Term Monitoring Program at the request of the NRC. A description of the refurbishment activities is

provided in Appendix I Mid-Quarter Sample Collection During the spring of 2008, Indian Point Energy Center began moving spent fuel in Unit 1. Therefore, samples in addition to those collected for the routine quarterly sampling round were obtained from selected wells associated with Unit 1 to increase the monitoring frequency proximate to these events. Following the Q1 09 sampling event, additional groundwater samples were collected from MW-42-49, MW-50-66, MW-53-120, and IP1-CSS during the approximate halfway point between sampling quarters. The results of the mid-quarter samples collected after Q1 2009 are presented in Section 3.4 along with the quarterly data. Sampling Data Sheets summarizing water quality data and sampling information are presented in

Appendix E. 2.5 Confirmatory Sample Collection During the Q1-2009 sampling event, positive detections of cesium were reported within MW-66-21 and MW-67-173. Historically Cesium has not been detected within these two sampling intervals. Following the Q1 09 sampling event, additional groundwater samples were collected from these two sampling intervals during the approximate halfway point between sampling quarters to evaluate these detections of Cesium. The results of the confirmatory samples collected after Q1 2009 are presented in Section 3.4 along with the quarterly data. Sampling Data Sheets summarizing water quality data and sampling information are presented in Appendix E

. above the drain lines, which only permitted collection of a composite sample. By mid-year 2008, these discharge operations had ceased, and during the Q2 2008 attempt to collect a sample from th is location, GZA observed no flow of water through this drain. It is possible that flow within this drain is being restricted by sediment further upgradient in the drain.

FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

June 22, 2010 Page 3-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 3.0 DATA EVALUATION The Long Term Monitoring Program was designed to provide data to address four main objectives: Monitor groundwater flow rate and radionuclide concentrations to both detect and characterize current and potential future off-Site groundwater contaminant migration to the Hudson River, both via direct groundwater discharge to the river and through infiltration into the Discharge Canal, from abnormal radionuclide releases of liquid effluents, so as to allow computation of potential radiation dose to the public from these releases; Mo nitor groundwater proximate to Systems, Structures and Components (SSCs) which exhibit a credible probability of resulting in a visually undetected release of radionuclides to the subsurface carrying an activity level of significance; Monitor groundwater along the property boundary to confirm that contaminated groundwater is not migrating off of the property to locations other than the river; and Monitor the groundwater plumes identified on-Site to demonstrate overall reductions in total activity over time as is consistent with the requirements of Monitored Natural Attenuation (MNA) 15, the selected remediation for the IPEC Site. These objectives are consistent with and fully encompass the guidance provided in the NEI Groundwater Protection Initiative (GPI). The following sections provide data analyses to address these four objectives.

3.1 Groundwater

Mass Flux The following sections describe the computation of groundwater flow (mass flux) through the Site using the Precipitation Mass Balance Model and the continuing verification of the calibration of this model based on the most current quarterly groundwater elevation monitoring data.

3.1.1 Groundwater

Mass Flux Computation As presented in the Hydrogeologic Site Investigation Report, the groundwater flow in both the upper and lower flow zones is toward the power block area from the North, East and South, with subsequent discharge to the Hudson River to the West. A corollary to this conclusion is that there is no groundwater flow, and thus no off-Site radionuclide migration from the power block area to the North, East or South. Groundwater flow associated with infiltration from the watershed may be as deep as 350 feet, but still ultimately discharges to the river. To estimate groundwater flow (i.e., groundwater mass flux) beneath the Site, an analytical groundwater flow model was constructed based on a Precipitation Mass Balance Model using the Q2 2007 (reference) data set. This model is based on the precept that, on a long term average, the groundwater flowing through and discharging from the aquifer is equal to the watershed infiltration recharge. The Precipitation Mass Balance Model was also calibrated to groundwater fluxes based on a Darcy's Law Model with gradients also derived from Q2 2007 15 The selection of MNA as the remedial strategy for the Site is discussed further in the Hydrogeologic Site Investigation Report.

Section 3.0 Data Evaluation June 22, 2010 Page 3-2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 (June 1, 2007) groundwater elevation contours

16. This calibration not only verified the reasonableness of the overall groundwater flow rates predicted by the Precipitation Mass Balance Model, but also allowed further discretization of the groundwater flow into upper and lower flow zones as well as flow volumes upgradient and downgradient of the Discharge Canal. The mass balance approach recognizes that the only substantial source of recharge to the aquifer is areal recharge derived from precipitation. The previous ten year average for precipitation measured at the Site is 36 inches per year. Based on a USGS infiltration study 17 as well as the model calibration cited above, approximately 29 percent of the precipitation falling on pervious surfaces over the Site watershed area results in infiltration recharge to the groundwater. This computation indicates that the groundwater recharge rate is approximately 10.5 inches per year for the 2008/2009 monitoring period. Applying this information to the pervious surfaces within the six individual groundwater flow zones shown on Figure 4, it is estimated that approximately 5.2 gpm of groundwater flows into the Discharge Canal from the upper and lower zones. In addition, approximately 5.8 and 7.7 gpm of groundwater flows into the Hudson River from the upper and lower zones, respectively. Furthermore, the mass balance model accounts for storm water discharge 18 to both the Discharge Canal and directly to the Hudson River which are estimated to be 44 and 4 gpm, respectively. These flows can be further subdivided into flow zones as shown in the table

in Appendix F.

3.1.2 Quarterly

Groundwater Mass Flux Calibration As indicated above, the Precipitation Mass Balance Model was calibrated to groundwater fluxes computed based on a Darcy's Law Model. The calibration compared the total groundwater flow

values for each of the six flow zones computed independently 19 using the Precipitation Mass Balance Model and the Darcy's Law Model. The initial calibration was performed using gradients derived from contours of groundwater elevation measured on June, 1 2007, as described in the Hydrogeologic Site Investigation Report. As part of the initial portions of the Long Term Monitoring Program 20, this calibration is being evaluated quarterly to verify that seasonal changes in groundwater elevations do not materially impact the calibration. Therefore, quarterly groundwater elevations measured with pressure transducers at representative low river tides 21 have been used to construct groundwater elevation contours for the upper groundwater flow zone (water table contours) and the lower 16 Refer to the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008. 17 USGS. Water Use, Ground-Water Recharge and Availability, and Quality of Water in the Greenwich Area, Fairfield County, Connecticut and Westchester County, New York, 2000-2002.

18 The storm drains also include groundwater discharges from the foundation drains for Unit 2 and Unit 3 VC Buildings. 19 The two models use different sets of input parameters which are not dependent or related to each other. The groundwater flo w computed using the Precipitation Mass Balance Model is based on yearly precipitation amounts and the proportion of this precipitation that results in infiltration recharge to the groundwater. The Darcy's Law Model, on the other hand, is based on the measured groundwater flow gradients (as computed from groundwater elevation contours) and estimates of the formation hydraulic conductivity.

20 It is anticipated that eight quarters of seasonal groundwater elevation data should be sufficient to capture sufficient seasonal and yearly groundwater flow variation to verify the validity of the current calibration. It is anticipated that once these data are obtained, the model will be recalibrated to the data set that yields the largest groundwater flow values, so as to be conservative. The scope of groundwater elevation data collection will be reduced at that point (currently anticipated after Q2 2009 data collection).

21 Previous evaluations (provided in the Hydrogeologic Site Investigation Report) have shown that the shape of the groundwater contours is relatively unchanged at different times of the tidal cycle. However, the use of low tide contours provides the gre atest transient gradients (larger than the average gradient) and therefore result in a computed groundwater flux from the Site that i s biased high. Computation of radionuclide release rates to the river based on these data will therefore also have a high bias (i.e., they will be conservative).

Section 3.0 Data Evaluation June 22, 2010 Page 3-3 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 flow (potentiometric head contours), as shown in Figure 5 for Q1 2009. As summarized on the table included below, similar calibration analyses were performed for previous quarterly monitoring (2 nd , 3 rd, and 4 th quarters of 2007, and 1 st , 2 nd , 3 rd, and 4 th quarters of 2008) 22 , 23. Figure 5 shows that the deep zone groundwater contours continue to be a subdued reflection of the upper zone groundwater contours. This demonstrates that the anthropogenic effects at the Site are generally shallow. The groundwater flows computed using the Darcy's Law Model in each of the six flow zones, for each of the available quarterly data sets, are compared to the flows used in the calibrated Precipitation Mass Balance Model (see table below).

PRECIPITATION MASS BALANCE MODEL (GPM) DARCY LAW MODEL (GPM)

Q2 2007 Q2 2007 Q3 2007 Q4 2007 Q1 2008 Q2 2008 Q3 2008 Q4 2008 Q1 2009 Totals 18.8 18.8 18.4 18.2 20.6 25.7 23.7 23.5 23.5 Northern Clean Zone 1.4 0.7 0.7 0.5 0.9 0.4 0.4 0.4 0.5 Unit 2 North Zone 0.6 0.8 0.9 0.8 1.3 0.5 0.6 0.6 0.6 Unit 1/2 Zone 2.8 2.3 1.7 2.1 3.2 2.5 1.9 3.2 2.9 Unit 3 North Zone 3.2 4.5 4.4 4.1 5.5 6.6 5.1 4.6 5.0 Unit 3 South Zone 3.5 2.6 2.8 2.7 2.2 5.4 5.8 4.5 4.6 Southern Clean Zone 7.4 7.9 7.9 8.1 7.6 10.3 9.9 10.2 9.9 The new data for Q1 2009 continues to show that the overall groundwater flow through the Site during 2008 and the first quarter of 2009 is greater than previously computed for 2007 by approximately thirty percent. While the 2008 yearly rainfall was higher than that for 2007, it was only about five percent higher. However, it must also be noted that the computed quarterly flows are based on groundwater elevations measured at one time during the quarter. As such, the frequency/intensity of the rainfall just prior to this snapshot measurement has an impact on the flow computation beyond just its contribution to the total yearly or quarterly rainfall; i.e., heavy rain before a measurement round will tend to result in a high bias in the elevation measurements 24, and thus higher computed flow values. To attempt to quantify this transient impact, the rainfall was totaled for one week, two weeks and one month prior to each groundwater elevation measurement round, and then each amount was converted to an equivalent monthly rainfall rate. The maximum of these three values for each quarter was then

compared to the average monthly rainfall amount, which was based on averaging monthly rainfall totals over the last thirteen years. For the three 2007 quarters, the maximum monthly 22 See Quarterly Reports prepared by GZA including: Final 2007 Quarterly Report dated May 1, 2008; Quarter 1 2008 Quarterly Report dated May 15, 2008; Quarter 2 and 3 2008 Quarterly Report dated February 6, 2009 and Quarter 4 2008 Quarterly Report dated September 1, 2009. 23 There was no formal 1st quarter monitoring event in 2007 given that the Long Term Monitoring Program had not yet been initiated. 24 While heavy rainfall will elevate transient groundwater levels in all types of geologic deposits, its impact on fractured bedrock regimes such as exists at IPEC is particularly rapid and large due to the low storativity.

Section 3.0 Data Evaluation June 22, 2010 Page 3-4 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 rate was between 0.2 and 1.8 inches/month below the average. For the four 2008 and the 1 st 2009 quarters, the maximum monthly rate was between 1.0 and 1.8 inches/month above the average. These data may therefore explain the 30% higher computed quarterly flow rates for 2008 and 2009 when the total rainfall in 2008 was only 5% greater than in 2007. In addition, the process of drawing groundwater elevation contours from the individual data points evolved over time after 2007 as new information pursuant to the influence of plant structures on the groundwater flow field became available. This evolving process resulted in some changes to the general shapes of the contours, which impacted computed gradients and thus the flow rates.

As also shown in the table, the increased flow is manifested in a zone-specific manner, with the more southerly zones primarily showing the greatest increases. This is also as would be expected given that the Unit 1 and Unit 2 foundation drains capture a large portion of the more northerly flow prior to it reaching the river. As such, these drains limit the increase in groundwater elevation due to rainfall events. While the increased flow in 2008 and 2009 (as compared to the reference flow of Q2 07) may initially appear substantial, if used for the dose computation 25, it would have a more limited impact on the dose magnitude. This muted impact primary results from the highest activities being found in the Zone 1 / 2 area where the computed flows have not shown as great an increase as in the more southerly, cleaner areas (less than 15% increase over the quarters

measured to date). Given the overall small variability of flow over the seasons monitored to date, as well as the overall recognition that the computed doses to the river are a small fraction of the permitted amounts, GZA believes that recalibrating the Precipitation Mass Balance Model, as used to compute groundwater flux through the Site as part of the radionuclide dose computation, is not warranted at this time. Once sufficient seasonal data has been collected (anticipated after the Q2 2009 sampling round), the model will be recalibrated to the quarterly data set that yields the largest groundwater flow values, so as to be conservative. Once the final data are obtained (anticipated after the Q2 2009 sampling round) and the model is recalibrated, the scope of groundwater elevation data collection will then be reduced. Groundwater contours will no longer be drawn and the dose computations will be based on the recalibrated Precipitation Mass Balance Model. However, to continue to validate the applicability and appropriateness of the Precipitation Mass Balance Model, a subset of the existing set of transducers will be maintained and monitored quarterly as part of the Long Term Monitoring Program. The primary objective of maintaining these transducers is to provide ongoing confirmatory data that demonstrate substantial changes to the on-site groundwater flow

field have not taken place and thus verify that the basic assumptions inherent in the model continue to remain valid. The transducer locations selected for this monitoring are provided on

Figure 5A of this quarterly report, and the rational for the selection of these specific individual transducer locations is provided in Appendix J. 3.2 Groundwater Sampling The following sections describe the groundwater sampling results and associated QA/QC protocols.

25 The dose computations are currently all performed with the flows computed for the Q2 2007 data set. It is noted that the increase in the Q1 2009 groundwater flow in the Unit 1/2 zone, which encompasses the majority of the radionuclide migration to th e river, is only 5% higher than the reference flow. Therefore the total dose computed with this slightly higher groundwater flow would still only be a small fraction of the permitted value. Therefore, the current dose computations have again been based on the Q 2 07 data.

Section 3.0 Data Evaluation June 22, 2010 Page 3-5 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92

3.2.1 Groundwater

Sampling Results Groundwater samples collected on behalf of Entergy during Q1 2009 were analyzed for radionuclides including Tritium, Sr-90, Cs-137, Co-60, and Ni-63 at GEL Laboratories

26. Table 3 presents the Q1 2009 analytical results specific to Tritium, Sr-90, Cs-137, Co-60, and Ni-63. The rolling yearly averages, which are calculated using all the valid data from the previous year [Q2 08 through Q1-09] including mid-quarter and confirmatory samples, are also

presented in Table 3 27. Table 4 presents minimum detection concentrations (MDC), standard deviation, and I.L.s assigned to each well for the Q1-2009 analytical results. Table 5 presents historic Site groundwater analytical data. Isopleth maps of rolling averages for Tritium and Sr-90 are presented in Figures 6 and 7, respectively.

Figure 8 presents a data map of rolling averages for Cs-137, Co-60, and Ni-63. An overall evaluation of the sample handling, shipment and analytical procedures, indicate that the quality assurance quality control protocols have been met for Q1 09, and the analytical results should be useable. This conclusion is further supported by a review of the Q1 2009 analytical data, as compared to previous historical trends. Refer to Section 5.2.2 of the Final 2007 Quarterly Long-Term Groundwater Monitoring Report No. 1 for further details pursuant to quality assurance quality control protocols.

3.3 R adionuclide Release Rates The calibrated Precipitation Mass Balance Model-derived groundwater flows within each of the six flow zones are multiplied by yearly rolling average radionuclide levels within each zone (computed separately for upper and lower flow zones as well as upgradient and downgradient of the Discharge Canal) to compute groundwater radionuclide release rates to the Discharge Canal and Hudson River. Storm drain flows computed based on yearly precipitation rates are multiplied by radionuclide concentrations measured in the storm drains to compute the associated storm drain radionuclide release rates to the Discharge Canal and Hudson River

28. The selection of specific monitoring locations for each of the six zones is described in the January 25, 2008 Memorandum - Synopsis of Long Term Monitoring Plan Bases. The radionuclide release rates from the groundwater and storm drains to the Discharge Canal and

Hudson River for Q1 2009 are shown in the table below

29.

26 It should be noted that samples were analyzed for gamma emitters via gamma spectroscopy. Although only Co-60 and Cs-137 are reported, gamma spectroscopy could detect and identify other gamma emitters if they became present in groundwater. 27 An overall evaluation of the Q2 2008 sample analytical procedures employed by the laboratory for this round of samples indicated that the quality assurance quality control protocols had not been met for some samples and therefore a portion of the analytical results for Q2 2008 was not useable for calculation of the rolling averages. Therefore, only the useable data from Q2-2008 was included in the calculations for the rolling averages. 28 The storm drains also include groundwater discharges from the foundation drains for Unit 2 and Unit 3 VC Buildings. 29 These release rates include the discharge from the Unit 2 VCB footing drains, but not from the Unit 1 NCD and SFDS (which ar e otherwise accounted for).

Section 3.0 Data Evaluation June 22, 2010 Page 3-6 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 GROUNDWATER AND SURFACE WATER TO RIVER (CI/YR)

GROUNDWATER AND SURFACE WATER TO CANAL (CI/YR)

Northern Clean Zone*

4.15E-04 0.00E+0** Unit 2 North Zone 4.17E-04 2.87E-02 Unit 1/2 Zone 7.82E-03 3.22E-03 Unit 3 North Zone 3.06E-03 1.16E-03 Unit 3 South Zone 1.04E-03 4.22E-03 Southern Clean Zone*

4.21E-03 0.00E+0***

  • Activity in the Northern Clean Zone is attributable to an assumed Tritium background concentration of 150 pCi/L in the groundwater. The remaining radionuclides were assumed to not be present in this streamtube. Radionuclide release rate in the Southern Clean Zone is calculated from activity measured in monitoring wells MW-40 and MW-51. ** The radionuclide release rate to the Discharge Canal from the Northern Clean Zone is zero because the Discharge canal does not extend far enough to the north to be downgradient of the Northern Clean Zone. *** The radionuclide release rate to the Discharge Canal from the Southern Clean Zone has been computed to be zero because groundwater in this zone appears to flow under the Discharge Canal and directly to the river. This conclusion has been reached given that the surface water level in the Discharge Canal is, on average tidally, equal to the proximate groundwater elevation, both of which are above the water level elevation in the Hudson River. This approximation results in a conservatively high dose

estimation.

Release rates are then used by Entergy to calculate the radiological dose to the environment via the Discharge Canal and the Hudson River using the procedure outlined in the Liquid Radioactive Effluents (0-CY-2740) document, prepared by Entergy and dated January 12, 2007.

3.4 SSCs and Property Boundary Monitoring The Long Term Monitoring Program has been designed to also provide rapid detection of potential leaks from SSCs which exhibit a credible probability of resulting in a visually undetected release of radionuclides to the subsurface. The monitored SSCs are shown on

Figure 4 and a description of the specific monitoring installations associated with each SSC are provided in the January 25, 2008 Memorandum - Synopsis of Long Term Monitoring Plan Bases. In addition to monitoring the SSCs, on-Site and off-Site wells are used to monitor the property boundaries for unanticipated radionuclide migration across these boundaries. Again, the rationale underpinning the selection of wells designated for this purpose is provided in the above cited Memorandum. These monitoring protocols are consistent with the NEI Groundwater Protection Initiative. As discussed with the NRC during our Groundwater Protection Initiative meeting on August 12 and 13, 2008, Entergy has initiated a program of increased sampling frequency (in addition to the quarterly samples) at select wells during/following activities that could potentially result in the increased likelihood of an undetected release to the subsurface. During the Q1 2009 monitoring period, there were no activities that required increased sampling. However, mid-quarter samples were still collected to better define the residual impacts of the Unit 1 fuel removal procedure

30. In addition, and as also requested by the NRC, a cross section has also 30 As part of the process for final fuel removal from Unit 1, IPEC began increasing the water level in the pools to Elevation 55' starting on April 23, 2008, with completion on the 25th. As anticipated based on previous work, increased leakage at high wate r was observed, particularly from the transfer canal. IPEC believes that the leakage is through the concrete into the Chemical Section 3.0 Data Evaluation June 22, 2010 Page 3-7 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 been developed through the Unit 3 area to supplement Figure 4 and further demonstrate the relationship of site groundwater flow patterns and monitoring well placement relative to the individual Unit 3 SSCs (similar cross sections were previously developed for Units 1 and 2, as presented in the Hydrogeologic Site Investigation Report). This new Unit 3 cross section C-C' is included in this quarterly report as Figure 4A. As agreed with the NRC during the Deviation Memo Closeout Meeting of August 18 and 19, 2009, and as supported by the Unit 3 cross section, Entergy has agreed to add an additional multi-level monitoring installation to be located near the south west corner of the Unit 3 Transformer Yard, downgradient of MW-46. The current sampling of U1-NCD and U1-SFDS will also be continued as part of the Long Term Monitoring Program. I.L.s were established for the associated monitoring wells to set quantitative radionuclide concentrations above which further action would be undertaken. As part of the ongoing groundwater monitoring program, the reported analytical concentrations are compared against the I.L.s shown in the table below. I.L.s are currently computed each year based on yearly averages of all the valid groundwater sampling analytical results of the previous year including aliquot, confirmatory, and mid-quarter sample results 31 , 32 , 33. The I.L.s generally described on the following page and presented in Table 4 are established for comparison with 2009 analytical results based on the quarterly samples collected and analyzed in 2008.

WELL ID INVESTIGATION LEVELS (I.L.S)

TRITIUM PCI/L SR-90 PCI/L OTHER PLANT-RELATED RADIONUCLIDES Off-Site Boundary Wells (LAF-002) any detection* any detection* any detection*

On-Site Boundary Wells (MW-40, MW-51, MW-52, and MW-107) 1,000** 2** any detection*

Riverfront Boundary Wells (MW-60, MW-62, MW-63) 2,000** 2** any detection*

All Other Wells

>2x average***

>2x average***

>2x average***

  • A radionuclide is positively detected when the result is greater than or equal to the MDC and 3 times the 1 sigma uncertainty. ** The values of 1000 and 2000 pCi/L for H-3 and 2 pCi/L for Sr-90 have been chosen to be low enough to result in timely detection of a new release or change to an existing release and still be outside the normal expected range of sample results at these locations, to the extent possible with the currently available data over time. *** Any positively detected radionuclide that has a result greater than 2 times the average from the previous year. The IL is not reached until an H-3 result is greater than 1000 pCi/L or a Sr-90 result is greater than 2 pCi/L. In the event that the analytical results of a groundwater sample exceed the designated I.L., the following series of actions will be considered:

Systems Bldg 33' area given increased Sphere Valve Gallery sump pump activation on the 14' level. During fuel removal, IPEC continued to add water to maintain the pool level at 55' until October when all the fuel was removed and the pools were drained. Given the anticipated increased leakage, GZA collected Unit 1 "Mid-Quarter" groundwater samples from monitoring wells U1-CSS, MW-42-49, MW-50-66, and MW-53-120 on May 12 & 13, 2008, September 5 & 8, 2008, and November 17 & 19 2008 to evaluate the associated subsurface impact of fuel removal activities. These wells were again sampled as part of the Q1-2009 sampling round, with additional Mid-Quarter samples subsequently taken between March 16 and March 18, 2009. 31 Previously ILs were calculated based on the analytical results from the quarterly sampling rounds and excluded mid-quarter a nd confirmatory sample analytical results in the calculation. 32 If a confirmatory analytical result confirms the original analytical result is false, then only the confirmatory result is utilized in the yearly IL calculation. If a confirmatory analytical result confirms the original result is valid, then both the original and t he confirmatory result are utilized in the yearly IL calculation. 33 If an aliquot analytical result confirms the original analytical result is false, then only the aliquot result is utilized in the yearly IL calculation. If an aliquot analytical result confirms the original result is valid, then the average of the original and the aliquot result are utilized in the yearly IL calculation.

Section 3.0 Data Evaluation June 22, 2010 Page 3-8 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 Contact the laboratory to verify that all quality control checks were satisfactory, sufficient sample volume was used; required MDC's were met, etc.; Re-analyze aliquots of the original sample; Re-sample the location to verify the result; Increase the frequency of sampling for this location; Initiate an investigation utilizing Entergy's corrective action program and related resources as appropriate (e.g. site engineering / radiation protection); and Initiation of source/ground water remediation techniques commensurate with the potential dose impact analyses and good environmental stewardship.

3.4.1 Previous

Q4-2008 Investigation Level Exceedances As indicated in the Q4 2008 Quarterly Monitoring Report, a comparison of the Q4 2008 and Post Q4 08 Mid-Quarter analytical results to their respective I.L.

34 values shows that the I.L.s were initially met in four samples. One of these samples (MW-67-39) was reanalyzed, and the results were found to no longer exceed the I.L.s

35. The remaining three samples (MW-36-52, MW-42-49, and MW-54-58) are discussed individually in the sections below.

MW-36-52. The Q4 08 results at this location indicated the continuance of a developing trend of increasing Strontium levels. While the exact cause of the trend was unclear, it was inferred to be related to either: 1) a delayed response to the 2005 filling of the Unit 1 SFPs for fuel inspection; or 2) the April 2008 filling of the Unit 1 SFPs for final fuel removal, as is consistent with that further described below for MW-42-49 and MW-54-58. In any case, plausible potential causes were related to Unit 1 SFPs (the primary source of Strontium on the Site), which has had the remaining fuel and SFPs water removed. As such, the source has been terminated and it is anticipated that Strontium levels at this monitoring location will return to a downward trend with time. As anticipated, the Q1 09 results at this location did indicate a decrease in Strontium to levels consistent with 2007 levels and below the I.L. This anticipated downward trend will be continued to be monitored.

MW-42-49. Water levels in the Unit 1 SFPs were increased during late April 2008 as part of the process for final fuel removal for ISFSI storage. As anticipated based on previous work, increased leakage at high water levels was observed, particularly from the transfer canal. As such, it was expected that radionuclide levels would increase downgradient of Unit 1.

Therefore, Mid Quarter samples were taken during the approximate halfway point following the Q2, Q3, Q4 2008 and Q1 09 sampling quarters. It was anticipated that increased radionuclide levels 36 would be observed shortly after raising of pool levels (i.e., in the post-Q2 Mid Quarter samples). However, the expected increase was not observed until the post-Q3 Mid Quarter samples. These samples yielded an abrupt Strontium level increase to three times the I.L. for 34 The I.L.s included in the Q4-2008 monitoring report were based on the yearly averages from 2007. The I.L.s for the Q1-2009 sampling event were adjusted based on the yearly averages from 2008. 35 The initial positive Cobalt-60 result for sample MW-67-39 was unexpected recognizing that the previous results for this loca tion yielded non-detectable levels. The re-analysis of this sample yielded below detection limit concen trations of Cobalt-60. This is consistent with historically reported concentrations as well as that expected based on the CSM. 36 It was anticipated that Tritium levels would increase, but it was unclear if increased Strontium levels should be expected g iven Entergy's demineralization of the pools prior to raising the water levels. In fact, the previously enhanced demineralization, begun in April 2006, was resulting in a consistent decrease in Strontium levels in MW-42-49.

Section 3.0 Data Evaluation June 22, 2010 Page 3-9 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 MW-42-49 37. The Q4 08 sample results indicated a similarly abrupt decrease in Strontium levels to just below the I.L. at this location, but the post-Q4 08 sample yielded a small increase in Strontium levels that resulted in an approximately five percent exceedance of the I.L. The Q1 09 sample results indicated another increase in Strontium to levels greater than three times the I.L. with a corresponding increase in Cesium levels to greater than two times the I.L. and Nickel levels to just above the I.L. The post Q1 09 samples results also indicated increases in Cesium and Nickel levels but the Strontium levels decreased slightly compared to the Q1 09 results. It is anticipated that these increases in Cesium, Nickel and Strontium levels will decrease since the remaining fuel has been removed and the water drained from the Unit 1 SFPs. The post Q1 09 results at this location also indicated abrupt spike in Tritium levels to almost nine times the I.L. As described in more detail below, this increase in Tritium level is likely associated with leakage from the waste distillate tank valves located within the Unit 1 Fuel Storage Building (FSB). This location will be continued to be monitored to evaluate radionuclide trends.

MW-54-58. The Q4 08 results indicated the Strontium levels at this location more than doubled its I.L., the first instance in which the I.L. was exceeded at this sampling location. This abrupt increase was anticipated to be the result of the increase in water levels in the Unit 1 SFPs, showing a predicted delayed response following that seen in the upgradient well MW-42-49.

Consistent with the results at MW-54-58, all of the other sampling depths within this monitoring installation also showed a similar, but lower magnitude, response in Strontium levels during the Q4 08 sampling event. In addition, MW-53-120, the upper two sampling intervals in MW-57 and potentially MW-36-52, located within the identified Strontium plume upgradient of MW-54 and downgradient of MW-42, also all showed a marked increase in Strontium levels over the same general time interval (see Figure 7A). Since the source of these radionuclides has been terminated, it was anticipated that Strontium levels at this monitoring location would return to a downward trend with time. As anticipated, the Q1 09 results from this location indicate Strontium levels decreased to levels consistent with the past levels and below the I.L. This location will be continued to be monitored to evaluate the anticipated downward trend in

Strontium levels. MW-40 and MW-51. While there have been no Q4 08 IL exceedances at these two southern boundary locations, there appears to be a general correlation in Tritium peaks at multiple depth levels in both of these monitoring installations. Even though it is recognized that the peak Tritium levels detected are low (less that 350 pCi/L) and near the lower limit of detection, these data are being closely scrutinized on a routine basis given the sensitivity to any potential indication of migration past the southern power block boundary. The most appropriate metric to evaluate if these peaks could be due to groundwater migration of Tritium from the power block area is the relative groundwater elevations between these locations and the power block areas where Tritium contamination exists. As discussed at length in the CSM sections of the Site Investigation Report, southern boundary groundwater elevations are well above those in the power block area. As such, groundwater, and thus Tritium in the groundwater, cannot migrate from the power block to the south; in fact, groundwater is migrating in the opposite direction.

This conclusion has continued to be validated each quarter though analyses of groundwater elevation contours (see Figure 5 in the various quarterly reports). In addition, starting with this, the Q1 2009 quarterly report, an additional figure (Figure 5A) is being generated to specifically compare high importance transducer readings to historic maximum and minimum readings. The 37 As indicated, Strontium levels increased even though the SFPs were being aggressively demineralized. This result is not unexpected given that the increase in leakage rate, even at reduced Strontium levels, could result in increased groundwater Strontium levels due to additional partitioning from the solid subsurface materials back into the groundwater as well as the ad ditional leakage rate as compared to the groundwater flow rate.

Section 3.0 Data Evaluation June 22, 2010 Page 3-10 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 objective of this analysis is to demonstrate that substantial changes to the on-site groundwater flow field have not taken place and that the CSM remains valid. The MW-40 and MW-51 monitoring installations are included in this analysis. Based on these analyses, as well as the substantial body of data developed over the last 5 years of investigation which underpin our CSM, we can state with a high degree of confidence that the low level peaks in the Tritium activities observed in these two monitoring installations

are not due to groundwater migration from the power block area. However, we do not yet have a definitive explanation for the observed peaks. Further investigation into other potential mechanisms, such as atmospheric Tritium washout and seasonal laboratory bias are ongoing.

3.4.2 Q1-2009 Boundary Investigation Levels A comparison of the Q1 2009 analytical results for the On and Off-Site Boundary Wells to their respective I.L. values shows that the I.L.s were not met for any of the monitoring locations.

Therefore, there was no requirement to further investigate radionuclide activity in these wells. MW-40 and MW-51. While there have been no Q1 09 IL exceedances at these two southern boundary locations, these data continue to be closely scrutinized on a routine basis given the sensitivity associated with the southern power block boundary (see further detail provided in

Section 3.4.1). Based on these analyses, as well as the substantial body of data developed over the last 5 years of investigation which underpin our CSM, we can state with a high degree of confidence that the low level peaks in the Tritium activities observed in these two monitoring installations are not due to groundwater migration from the power block area. This conclusion has continued to be validated each quarter. However, we do not yet have a definitive explanation for the observed peaks. Further investigations into other potential mechanisms, such as atmospheric Tritium washout and seasonal laboratory bias are ongoing. As part of this effort, starting with this the Q1 2009 Quarterly Report, an additional figure (Figure 5A) is being generated to specifically compare high importance transducer readings to historic maximum and minimum readings. The objective of this analysis is to demonstrate that substantial changes to the on-site groundwater flow field have not taken place and that the CSM remains valid. The MW-40 and MW-51 monitoring installations are included in this analysis.

3.4.3 Q1-2009 SSC Investigation Levels For the SSC monitoring wells, a comparison of the Q1 2009 and Post-Q1 Mid-Quarter analytical results to their respective I.L. values shows that the I.L.s were initially met in eight samples. Two of these samples (MW-66-21 and MW-67-173) were reanalyzed, and the results were found to no longer meet I.L.s

38. The remaining six samples in which the I.L.s were met are discussed individually in the sections below. The following table summarizes the cases where the I.L.s were met and also presents the reanalyzed results.

38 The initial positive Cesium-137 results for samples MW-66-21 and MW-67-173 were unexpected recognizing that the previous results for these locations yielded non-detectable levels. As shown in the table, the re-analysis of these samples yielded below detection limit concentrations of Cesium-137. This is consistent with historically reported concentrations at these locations.

Section 3.0 Data Evaluation WELL ID RADIONUCLIDE RESULT (PCI/L)

REANALYZED RESULT (PCI/L) INVESTIGATION LEVEL (PCI/L) MW-30-84 Cs-137 8.97 NA* Any detection*** MW-32-59 H3 17,800 NA* 10,031 MW-37-40 Sr-90 3.47 NA* 2.26 MW-42-49 (Q1 09) MW-42-49 (Post Q1 09) Sr-90/Cs-137/Ni-63 H3/Sr-90/Cs-137/Ni-63 677/80,500/912 72,200/588/140,000/1,160 NA* 196/37,933/842 8,212/196/37,933/842 MW-53-82 H3/Sr-90 4,260/2.3 NA* 1,964/2 MW-62-138 Sr-90 2.46 NA* 2 MW-66-21 Cs-137 8.99 ND** Any detection*** MW-67-173 Cs-137 13.4 ND** Any detection***

  • NA indicates that the sample was not reanalyzed. ** ND indicates that the radionuclide was not detected greater than or equal to the MDC and 3 times the 1 sigma uncertainty. *** A radionuclide is positively detected when the result is greater than or equal to the MDC and 3 times the 1 sigma uncertainty.

MW-30-84. The Q1 09 results indicate Cesium was detected for the first time at this location since the LTMP was initiated (fall 2007). While the exact cause of this cesium detection is currently unclear, given the absence of Cesium in the samples analyzed during the past quarterly sampling events at this location, the absence of Cesium in the upper zone (MW-30-69) at this location during the Q1 09 sampling event, and the absence of Cesium in all the zones in proximate locations MW-31 and MW-32 during the Q1 09 sampling event, this Cesium detection is likely related to a false laboratory detection. Cesium levels at this location will be subject to added scrutiny during the upcoming quarterly monitoring round to evaluate this potential false positive Cesium detection. MW-32-59. The Q1 09 results at this location indicate Tritium was detected at the highest concentration since the initiation of the LTMP (fall 2007) exceeding the I.L. by a factor slightly under two. The remaining four deeper zones at this location (32-85,32-149, 32-173, and 32-190) did not indicate an increase of Tritium levels during the Q1 09 sampling event and have generally indicated decreasing Tritium trends. While the exact cause of this elevated Tritium detection at this location is currently unclear, it is likely related to the mobilization of stored Tritium within the shallow bedrock fractures near the Unit 2 SFP. This storage/retention mechanism was confirmed by the tracer test and described in the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008. However, it is also recognized that this Tritium increase may be related to the Unit 2 ISFSI work (see Section 3.6.4). This location will therefore be subject to added scrutiny during the upcoming quarterly monitoring rounds to evaluate potential increasing trends in Tritium levels.

MW-37-40: The Q1 09 results at this location indicate Strontium was detected slightly above the I.L. Previous Strontium levels at this location have indicated a steady downward trend; however this sampling location is located downgradient of the Unit 1 SFPs and increases in radionuclide levels were expected due to the increase in water levels in the Unit 1 SFPs during late April 2008. Since the source of these radionuclides has been terminated, it is anticipated that Strontium levels at this monitoring location will return to a downward trend with time. This location will be subject to added scrutiny during the upcoming quarterly monitoring round. June 22, 2010 Page 3-11 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 Section 3.0 Data Evaluation June 22, 2010 Page 3-12 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 MW-42-49. As discussed previously, recent quarterly and mid quarter sampling results at this location have indicated an increase in Cesium, Nickel, and Strontium levels. These radionuclide level increases are likely associated with a delayed response to the raising of the water levels in the Unit 1 SFPs and associated increased leakage. It is anticipated that the levels of these isotopes at this location will decrease since the remaining fuel has been removed and the water drained from the Unit 1 SFPs. Quarterly and post quarterly sampling will continued to be performed at this location to monitor the levels of these isotopes and the anticipated downward trend with time. To this end, and as discussed in Section 3.5 - Plume Monitored Natural Attenuation, the behavior of the Strontium increases due to defueling of Unit 1 are being specifically monitored, as summarized on a new figure developed for this, the Q1 2009 quarterly monitoring report (Figure 7A). The post Q1 09 results however also indicated a significant increase in Tritium levels at this location. Prior to the post Q1 09 results, Tritium levels at this location were generally stable with only one minor increase during the post Q3 08 sampling round. In addition, it is noted that the Tritium increase at this location came after the Strontium increase. If the Tritium increase was associated with the defueling of Unit 1, as is the Strontium increase, then it should have preceded the Strontium increase

39. Given the above, Entergy undertook additional investigations to search for another SSC leak. A February 2009 leak in the valves associated with the waste distillation tanks located to the east of the Unit 1 Fuel Storage Building (FSB) was identified. These valves are located within the FSB and thus the leak, which was visually detected and then quickly repaired, was not reported as part of the GPI program. Reporting of such leaks, even if they occur within structures, is now subject to the internal GPI reporting program. Given that these valves have been repaired, it is anticipated Tritium levels will decrease and return to stable levels at this location. Quarterly and post quarterly sampling will continued to be performed at this location to monitor Tritium levels and the anticipated downward trend with time.

MW-53-82. The Q1 09 results at this location indicate Tritium was detected greater than two times the I.L. and Strontium was detected slightly above the I.L. The lower sampling interval (MW-53-120) at this location indicated Tritium and Strontium levels were consistent with past trends and did not indicate an increase. This location is located downgradient of the Unit 1 SFPs and consistent with the results at upgradient location MW-42-49, increases in radionuclide levels are expected as related to a delayed response to the previous increase in water levels in the Unit 1 SFPs during defueling, and the observed waste distillation tank valve leakage within the Unit 1 FSB. The analytical results from the upcoming quarterly monitoring round will be utilized to assess the potential upward trend of Tritium at this location. As discussed in Section 3.5, Plume Monitored Natural Attenuation, the behavior of the Strontium increases due to defueling of Unit 1 are being specifically monitored, as summarized on a new figure developed for this, the Q1 2009 quarterly monitoring report (Figure 7A). MW-62-138. The Q1 09 results at this location indicate Strontium was detected slightly above the I.L. The analytical results from four (62-18, 62-37, 62-53, and 62-182) of the other seven sampling intervals at this location have also indicated recent slight increases (Q4 08 and Q1 09) in Strontium levels. This location is located downgradient of the Unit 1 SFPs and consistent with the results at upgradient location MW-42-49, increases in radionuclide levels are likely related to a delayed response to the increase of water levels in the Unit 1 SFPs. The analytical results 39 Unlike the other radionuclides associated with the Unit 1 SFPs, Tritium is conservative and thus does not partition out of the groundwater onto solid geologic and anthropogenic surfaces. Therefore, Tritium should more through the groundwater flow system and to monitoring wells more rapidly that Strontium and Cesium.

Section 3.0 Data Evaluation June 22, 2010 Page 3-13 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 from the upcoming quarterly monitoring round will be utilized to assess an upward trend of Strontium levels at this location. To this end, and as discussed in Section 3.5 - Plume Monitored Natural Attenuation, the behavior of the Strontium increases due to defueling of Unit 1 are being specifically monitored, as summarized on a new figure developed for this, the Q1 2009 quarterly monitoring report (Figure 7A). U1-NCD AND U1-SFDS. As agreed with the NRC during the Deviation Memo Closeout Meeting of August 18 and 19, 2009, sampling of the Unit 1 North Curtain Drain (U1-NCD) and the Unit 1 Sphere Foundation Drain Sump (U1-SFDS) will be formally included as part of the Long Term Monitoring Program. These drains have historically been assumed to collect some groundwater contaminated with Tritium from the Unit 2 SFP. This conclusion was validated by the tracer test conducted as part of the hydrogeologic site investigation (see the Hydrogeologic Site Investigation Report prepared by GZA and dated January 7, 2008). The amount of quarterly sampling data is currently insufficient to set Tritium I.L.s for these drains. However, visual inspection of the existing data was performed and no noteworthy increases in Tritium levels were observed. In addition, given the location of these Unit 1 drains, they should also prove useful for monitoring Strontium levels associated with the Unit 1 defueling. As such, the data from these drains has also been included on Figure 7A. Three critical conclusions can be drawn from the above summarized data and analyses: 1) the current CSM for the IPEC site provides a good basis for the design of the Long Term Monitoring Program; 2) the procedures and rational used for selecting monitoring locations for leak detection have been further validated given the clear detection of the confirmed Unit 1 SFPs increased leakage during fuel removal and the detection of Tritium leakage from the waste distillation tank valves within the Unit 1 FSB; and 3) increases in radionuclide levels following a documented leak take longer to materialize in the groundwater than might otherwise be

expected.

3.4.4 Conclusions

- Boundary and SSC Leak Detection Monitoring Recognizing that measured activities in the Off-Site and On-Site Boundary Wells were below I.L. levels, this overall data set continues to demonstrate that radionuclides are migrating toward the Hudson River to the West, and are not migrating off of the property to the North, East or

South, as expected given groundwater flow directions from the property periphery toward the power block area. Given the analyses discussed above, there is also no compelling reason to believe that any new undetected leaks have developed in the SSCs monitored relative to Unit 2 or 3. With the exception of locations MW-32-59, MW-42-49, and MW-53-82, no Tritium levels met their I.L.s and the overall, continued reduction in Tritium levels in the Unit 2 plume 40 is consistent with a conclusion that the Unit 2 SFP had ceased leaking after the transfer canal "pin hole leak" was repaired in late 2007. The recent increase in Tritium levels at locations MW-42-49 and MW-53-82 are likely attributed to an observed leak in the waste distillation tank valving within the Unit 1 FSB rather than increased leakage from the SSCs associated with Unit 2 and 3. The increase of Tritium levels at location MW-32-59 is inferred, in part based on the recent tracer data, to be associated with Tritium stored in the subsurface via natural and anthropogenic retention mechanisms

41. However, given the more recent behavior observed in the Unit 2 collection box 40 It is noted that there is no Tritium plume associated with Unit 3. 41 These retentions mechanisms are discussed along with the CSM in the previously cited Hydrogeologic Site Investigation Report.

Section 3.0 Data Evaluation June 22, 2010 Page 3-14 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 data (see below), additional investigations/data evaluations will be performed to further rule out potential Unit 2 SFP leak mechanisms. Given the above, ultimate confirmation of the these conclusions will require monitoring over a number of years to demonstrate continued depletion of Tritium from the retention mechanisms and allow ranges in seasonal variation to be adequately reflected in the monitoring data. Finally, while not a groundwater monitoring issue, a crack leak collection device 42 is also routinely monitored as part of the overall ongoing Unit 2 SFP integrity analysis. The data indicate that very small amounts of water (on average <

2/100ths of a gpd) still drain from the shrinkage crack in the concrete. The volume of drainage is episodic with apparent peaks in the flow. A full explanation of the underpinning mechanism(s) has not yet been discerned, but the peaks do not clearly correlate with refueling outages. While

work is still ongoing relative to this outstanding issue, water which exits this crack is fully contained and does not enter the subsurface. Relative to the Unit 1 data, increased leakage was anticipated during final fuel removal from Unit 1 SFPs. This leakage was readily detected by the Long Term Monitoring Program. Overall, GZA believes that continued monitoring will further demonstrate decreasing long term trends in groundwater contaminant activities over time for both the Unit 1 and Unit 2 plumes given the source interdictions completed by Entergy. Since inception of the Long Term Monitoring Program, it has been observed that I.L.s have been routinely exceeded in a number of cases where subsequent data have demonstrated that no new leaks have occurred. The majority of these cases occur where the radionuclide levels are generally low and/or near their detection limits. It appears that data variability, likely due to seasonal precipitation influences, is the primary cause of these false positives, particularly pursuant to Tritium. Analysis of the false positives indicate that, for these cases, I.L.s equal to twice the previous yearly average are clearly too low. Uncorrected, this condition is likely to prove detrimental over the long term relative to the overall intent of establishing the I.L.s for leak detection. While simply increasing the I.L.s to a greater multiple of the yearly average would likely be appropriate for these cases, it would result in I.L.s that are too high for locations with higher levels of residual contamination. Therefore, the basis upon which the I.L.s are computed needs to be re-evaluated in light of the natural transient variability of the groundwater system in response to precipitation events, etc. Therefore, while re-evaluation/re-setting of I.L.s is a clear goal, it is still premature given the lack of sufficient data. This is particularly true given the recent behavior in Strontium levels due to the Unit 1 defueling (see Figure 7A). As such, the current I.Ls will remain in effect while a sufficient data base is acquired to allow better quantification of the natural (non-leak related) variability in the data.

3.5 P lume Natural Attenuation Monitoring The fourth and final objective of the Long Term Monitoring Program is to evaluate if the groundwater plumes identified on-Site demonstrate overall reductions in total activity over time, as is consistent with the requirements of MNA, the selected remediation for the IPEC Site

43. Given the likely ages of the leaks identified and characterized during the hydrogeologic investigation, it is probable that the Unit 2 (Tritium) and Unit 1 (Strontium) plumes had reached steady state conditions prior to the beginning of the quarterly monitoring. Given that: 1) the 42 Further discussion of the 2005 shrinkage crack leak in the SFP concrete wall that initiated the overall groundwater investigation, and the associated crack leak collection device installed to contain any residual leakage, can be found in the Hydrogeologic Site Investigation Report. 43 The selection of MNA as the remediation for the Site is more fully discussed in the Hydrogeologic Site Investigation Report.

Section 3.0 Data Evaluation June 22, 2010 Page 3-15 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 identified leaks in the Unit 2 SFP have all been previously repaired (the last leak repaired in 2007), and: 2) the water in the Unit 1 West Pool underwent intensified demineralization (beginning in April 2006 with a reduction in Strontium levels of over 95 percent), one might expect that the plumes should have started to markedly attenuate with time. Both plumes have in fact generally shown significant levels of attenuation, when they are viewed in their entirety and past release events and expected seasonal variability in the sampling data are accounted for. However, the attenuation has not been rapid during time frames immediately subsequent to the source interdictions implemented by Entergy, as was previously predicted. In the case of the Unit 2 Tritium plume, levels have dropped markedly from the highest levels measured during the two-year hydrogeologic investigation. However, the rate of Tritium decrease with time has decreased. This is as predicted due to natural geologic and anthropogenic retention mechanisms which have trapped and stored Tritium released during historic Unit 2 SFP leaks, and are now slowly releasing this Tritium to the groundwater flow regime after the physical leaks have been repaired. This conclusion is consistent with the original CSM presented in the Hydrogeologic Site Investigation Report, as further supported by the recent tracer data (see Section 3.6

). Relative to the Unit 1 Strontium plume, Strontium levels should drop much more slowly than Tritium levels. This is because, in addition to the retention mechanisms discussed above for Tritium, Strontium also undergoes partitioning whereby this radionuclide is adsorbed from the groundwater onto solid surfaces (both geologic and anthropogenic). When the input of Strontium to the groundwater is reduced (such as via fuel pool demineralization) the solid surfaces desorb Strontium back into the groundwater, thus maintaining Strontium levels.

Strontium partitioning is therefore expected to substantially slow plume attenuation. Despite partitioning effects, some plume attenuation was observed in response to pool demineralization

prior to defueling, particularly proximate to the pool (see Figure 7A, U1-NCD, U1-SFDS, MW-42, U1-CSS). However, defueling of Unit 1 resulted in a temporarily increase in the leakage rate of West Pool water into the formation. This was expected based on previous work on the Unit 1 SFPs, but was unavoidable given the requirement to raise the pool level for fuel rod removal. The increased leakage rate has resulted in a substantial increase in Strontium levels in the immediate vicinity of the fuel pool (U1-NCD, U1-SFDS, MW-42, U1-CSS) as well as initial indications of increases in the Strontium plume levels downgradient of the pool (MW-53, MW-55 MW-54, MW-57, MW see figure 7A)44. With time, it is expected that the levels proximate to the pool will decrease and levels downgradient of the pool will increase as this additional strontium contaminated water flushes through the groundwater flow system. It is expected that this flushing mechanism will be protracted given the aforementioned impact of partitioning on Strontium levels in the groundwater. However, over time it is expected that downgradient Strontium plume levels will resume an overall downward trend once this perturbation is finished passing through the system.

3.6 Unit 2 Spent Fuel Pool Integrity Analysis As discussed above in the context of Long Term Monitoring Program Investigation Levels, as well as in previous Quarterly Reports, the groundwater data collected to date support the conclusion that there is no compelling reason to believe that any new leaks have developed in 44 As of late 2008, all the fuel rods have been removed from the Unit 1 SFPs and the pool water has been drained. As such, the Unit 1 SFPs is no longer an active source of radionuclides to the subsurface.

Section 3.0 Data Evaluation June 22, 2010 Page 3-16 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 the Units 1, 2 and 3 SSCs

45. However, as discussed in the Final Investigation Report 46 , the Unit 2 Spent Fuel Pool (IP2-SFP) has had documented historic leaks, which have all been either repaired and/or contained. Given that the IP2-SFP does not have an integral leak detection system, as does the IP2-SFP, this SFP has undergone additional scrutiny relative to its integrity. While the data does not demonstrate that there are any ongoing leaks in the IP2-SFP, this conclusion has been reached in the preceding quarterly reports based on visual inspection of the relatively limited data sets for the monitoring wells downgradient of the IP2-SFP. Although the total number of data points at each sampling location still remains limited, GZA has performed a more quantitative evaluation of the data pursuant to IP2-SFP integrity for this, the Q1 2009 report
47. As discussed below, this analysis has included the following lines of evidence: Anal ysis of the trend in individual Tritium levels for each monitoring well located downgradient of the SFP; Analysis of the trend in individual Tritium levels for monitoring wells MW-31 and MW-32; wells which are located upgradient of the SFP but which exhibited high flourescein concentrations during the tracer test 48; Analysis of the trend in total activity in the Tritium plume located downgradient of the SFP over time; Analysis of the mass balance between total Tritium released via the known leaks, the capacity for long term storage of Tritium within subsurface retention mechanisms and the rate of Tritium removal via groundwater flow directly and indirectly to the Hudson

River; and Analysis of the leak collection box 49 data. 3.6.1 Individual Downgradient Monitoring Well Tritium Analyses A Mann-Kendall analysis, as referenced in USEPA Guidance for Data Quality Assessment - Practical Methods for Data Analysis, 50 was performed on the Tritium levels measured at monitoring locations associated with the IP2-SFP and downgradient Unit 2 Tritium plume. This 45 As noted above, additional leakage from IP1-SFPs was observed as anticipated when the pool water levels were raised to allow final removal of the remaining fuel rods. This additional leakage was expected given that previous work on these pools had detected existing leaks in the upper portions of the pool walls which are typically above the pool water level. As such, the i ncreased leakage does not constitute a new leak, but rather an expected, short term condition required to effect final rod removal. The IP1-SFPs now contain no rods and the pool water has been drained. Therefore, continued leakage from these pools is no longer possible. 46 Hydrogeologic Site Investigation Report, January 7, 2008, prepared by GZA GeoEnvironmental, Inc, on behalf of Enercon Services, Inc., for Entergy Nuclear Northeast, Indian Point Energy Center, 450 Broadway, Buchanan, NY 10511. 47 It is noted that while the majority of the data used in this analysis are current through the Q1 2009 sampling event in January/February 2009, some subsequently collected data has also been incorporated in some cases. 48 As discussed in the Final Investigation Report, groundwater above the water table flows in the down-slope direction of the bedrock fractures. In the vicinity of the IP2-SFP, this unsaturated zone water flows to the east and south, rather than to the west as does the groundwater below the water table. This unsaturated groundwater flow direction was demonstrated during the tracer testing with the highest flourescein concentrations detected in the upper portions of MW-31 and MW-32 immediately after tracer injection, and is consistent with the bedrock fracture geology (see the Final Investigation Report for further discussion). 49 This stainless steel box was sealed to the concrete SFP wall, covering the shrinkage crack that was discovered weeping water during the dry cask crane foundation excavation in 2005. This box has been containing and collecting small amounts of water since that time. 50 USEPA Guidance for Data Quality Assessment - Practical Methods for Data Analysis, EPA QA/G9, QA00 UDATE; EPA/600/R-96/084, July, 2000 Section 3.0 Data Evaluation June 22, 2010 Page 3-17 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 statistical technique was chosen because it is particularly well suited for data sets with a limited number of points. Each of the vertical monitoring intervals at each monitoring installation location was analyzed separately. In general, only data collected after final completion of the multi-level installation 51 was used. However, there were a number of exceptions to this generalization where open borehole and/or borehole packer testing data were also used. These data were incorporated where possible given the importance of early time data (proximate to when documented leaks were still active). As a case in point, MW-30 provides a good example of where initial open borehole data and individual multi-level data can be compared with a high degree of confidence that the data are representative of the same location and depth within the bedrock formation. This particular borehole encountered two general flow producing zones: 1) the upper zone, at the top of the saturated portion of the borehole, and 2) the lower portion of the borehole. Both packer testing and heat trace borehole flow meter testing showed that the upper zone was far more productive than the lower zone. In addition, once the borehole was completed as a multi-level installation, it was clear from the pressure transducer data that there was a strong vertically downward piezometric head gradient in the borehole. Therefore, prior to multi-level completion, the groundwater entered the upper portion of the borehole, as driven by the higher head in these fractures, and flowed downward to exit through the fractures at the bottom portion of the borehole given their lower head

52. As such, the open borehole existed in a condition where it was entirely full of groundwater from the bedrock fractures at the upper portion of the borehole.

Therefore, when the open borehole was sampled, the water obtained would be nearly entirely groundwater from the upper fractures, independent of the depth from which the sample was

taken 53. Given that the multi-level sampling data showed that the upper portion of the groundwater contained the higher Tritium levels, as expected for a SFP leak from above, the open borehole sample would yield, if anything, Tritium levels which are somewhat too low relative to an upper multi-level sample. Therefore, the high Tritium levels observed in the early-time open borehole samples from MW-30 (up to 601,000 pCi/L) can be added to the data set subsequently obtained from the upper multi-level completion in MW-30

54. A similar analysis was used relative to the open borehole data from MW-31 and MW-32. Graphs showing the variation in Tritium concentration over time, including results from open borehole, test packer 51 Each borehole was completed as a multi-level installation. These multi-level completions were designed to segregate the borehole length into individual sampling zones with depth. The sampling zones were generally established to coincide with the more productive zones of the fractured bedrock and overburden (both natural soils and backfill). These sampling zones were the n isolated from each other with various types of seals placed in the open borehole. The objective of the seals is to prevent ver tical flow through the borehole and thus establish the same conditions in the formation which existed prior to the drilling of the borehole.

As such, the Tritium data is considered depth-discrete. It is noted that the multi-le vel installations at some monitoring locations were removed and replaced with upgraded systems, such as for the monitoring installation at MW-32.

52 While the bedrock borehole is open (prior to multi-level completion), the water level in the open hole is at an elevation corresponding to the weighted average of the pieziometric heads in the individual fractures intersected by the hole. The weighted average borehole head is based on the product of the head and the hydraulic conductivity for the individual fractures. Therefore, groundwater in fractures with heads greater than this average flows out of the fractures into the borehole; conversely, water i n the borehole flows into fractures which have individual heads less than the average. Therefore, in the case of MW-30 where the hea ds in the upper fractures are greater than those deeper in the hole, groundwater flows from the fractures into the upper portion of the borehole, then flows down the hole and exits through the lower fractures. 53 As groundwater is extracted from the open borehole, the entire saturated length of the borehole experiences the same reduced groundwater level due to the pumping, independent of where the pump is located. The degree of reduction in the water level depends on how fast the water is pumped from the borehole. As such, groundwater runs into the borehole to replace the water being removed. However, the groundwater only enters the borehole from fractures which are at heads greater than the head in th e borehole while it is being pumped. In addition, the rate of groundwater entering the borehole from each fracture is also dependent on the hydraulic conductivity of the individual fractures as well as the magnitude of the head in the fracture relative to that in the borehole during pumping. The greater hydraulic conductivity and higher piezometric heads in the upper fractures of MW-30 resul ts in the sampled groundwater coming almost entirely from these fractures independent of the location of the pump in the borehole. 54 As a corollary, the open borehole data for this location cannot be used to provide early time data for the lower portion of the borehole.

Section 3.0 Data Evaluation June 22, 2010 Page 3-18 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 and post multi-level completion ("Waterloo samples") are presented as Figures G-1 , G-2 and G-3 in Appendix G, for MW-30, 31 and 32, respectively. Additional graphs are also presented in the appendix for the other monitoring locations downgradient of the Unit 2 SFP (see Figures G-4 through G-14 for MW-33 through 37, 42 55, 49, 50, 53 55 55 and 111)

56. These wells only include post-multi-level completion data given the limited time frame between borehole drilling and completion of the installation. The Mann-Kendall analyses for the individual monitoring points are summarized on Table G-1 in Appendix G. The table includes the results of the analysis for each depth interval ("well") at each of the multi-level monitoring locations enumerated above. The table is color coded, with green shading designating wells showing a decreasing trend, yellow for no trend, and red for an increasing trend. Of the 33 intervals included on the table, two-thirds (22) show a decreasing trend. This group of wells also includes those located within the core of the plume with the highest Tritium concentrations (MW-30-69, 33 and 111, with current yearly average Tritium concentrations > 50,000 pCi/L). These high concentrations wells better represent overall plume behavior because they encompass a great percentage of the Tritium activity in the plume. Of the 10 wells shaded in yellow (exhibiting no trend), only 5 provide valid representations (as shaded) of Unit 2 plume behavior: Three (MW-42-49, MW-42-78 and MW-53-82) are located downgradient of the Unit 1 SFPs, rather than the Unit 2 SFP, and are therefore are not yet expected to show a decreasing trend due to Unit 1 defueling 55 Therefore, these wells should not be used to infer conclusions relative to plume trends for Unit 2. Inspection of the graph for MW-36-24 (Figure G-7) shows a rapid and large decrease in Tritium concentrations at early times in this overburden (discharge canal backfill) well (from > 30,000 pCi/L to <3,000 pCi/L). This large decrease is followed by a number of small perturbations around a relatively flat trend.

While it is visually clear that this well has shown a major decrease in Tritium levels since containment of the 2005 shrinkage crack leak, the Mann-Kendall analysis only evaluates number of increases relative to decreases and does not weight the analysis relative to the magnitude of the change. As such, visual inspection demonstrates that this location actually exhibits an overall decreasing trend. Inspection of the graph for MW-34 (Figure G-5) shows a distinctly increasing trend at early times, followed by a distinctly decreasing trend thereafter. Given the time frames and the downgradient location of this bedrock well, it is likely that the increasing trend delineates arrival of the leading edge of the plume generated by the 2005 shrinkage crack leak. The decreasing trend would then reflect dissipation of this plume after containment of this leak (this hypothesis is supported by similar trends in MW-33 and MW-35. As such, the MW-34 location actually exhibits a decreasing trend relative to plume behavior after containment of the 2005 shrinkage crack leak.

55 MW-42 and MW-53 are located downgradient of the Unit 1 SFPs, rather than the Unit 2 SFP. However, these two wells were included in the analyses, as requested by NRC, due to the apparent contribution of Unit 2 SFP Tritium to the Unit 1 groundwater flow regime via vadose zone transport (see Figure 6). It is noted that any decreasing Tritium trend in this area due to the termination of leaks from the Unit 2 SFP could be masked by increased leakage of Tritiated water from the Unit 1 SFPs up throug h the completion of defueling in November 2008. 56 Monitoring locations MW-66 and MW-67, also located downgradient of the Unit 2 SFP, could not be included in the analyses because the data sets for these two wells do not yet include the required minimum number of data points (ten) for the Mann-Kendall analysis method.

Section 3.0 Data Evaluation June 22, 2010 Page 3-19 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 It is noted that the five remaining "no trend" wells are all associated with the two monitoring locations MW-31 and MW-32. These two locations are actually not located downgradient of the Unit 2 SFP from a saturated groundwater flow standpoint. Rather, they are generally located up- and cross-gradient. The final well, MW-31-85, is also part of this group. This is the only well for which the Mann-Kendall analysis indicates an increasing trend. The increasing trend in this well, as well as the behavior of the other wells in MW-31 and MW-32 are discussed in the following section. Based on the evaluation summarized above, the Mann-Kendall analyses of the individual depth intervals within the groundwater monitoring installations located downgradient of the Unit 2 SFP overwhelmingly support a conclusion that the Tritium plume has exhibited an overall decreasing trend with time since monitoring began.

3.6.2 Individual

Upgradient Monitoring Well Tritium and Tracer Analyses (MW-31 and MW-32) As discussed in the preceding section, individual wells clearly exhibiting no trend or an increasing trend are confined to monitoring locations MW-31 and MW-32. These two monitoring installations are located up- and cross-gradient from the Unit 2 SFP. While not downgradient of the SFP from a groundwater flow perspective, Tritium leakage from the SFP can still migrate to these locations via vadose zone transport above the water table along dipping bedrock fractures. During the site investigation work, a tracer test was performed which clearly demonstrated that water released proximate to the SFP foundations (adjacent to MW-30) does migrate to the east and south past MW-31 and MW-32 prior to entering the water table, and then flows with the groundwater through these wells and then to the river to the west. This vadose zone migration mechanism is discussed more fully in the Hydrogeologic Site Investigation Report. In addition to the general persistence of Tritium throughout the Unit 2 plume 57 and the absents of a clear downward trend in Tritium concentrations with time at these two specific monitoring installations, the upper-most interval in both MW-31 and MW-32 have shown an abrupt increase in Tritium over the last two quarters (Q1 and Q2 58 09). These data can be explained by either: 1) an ongoing small episodic (< 5L/day) leak in the IP2- SFP; 2) a "retention mechanism" in the saturated and unsaturated zones under the IP2-SFP that can retain substantial volumes of highly Tritiated water (e.g., historic SFP leakage) for substantial amounts of time 59; and/or 3) a combination of the above

60. While Tritium concentrations in the groundwater plume could be impacted by both an ongoing leak and the retention mechanisms cited above, tracer concentrations in the groundwater cannot be replenished by SFP leakage. Therefore, a 57 The Unit 2 Tritium plume has decreased in concentration relative to the samples taken just after identification of the 2005 shrinkage crack leak (the earliest samples taken from directly below the SFP yielded Tritium concentrations over 600,000 pCi/L, while more recent maximum concentrations have been below one-half of those initial concentrations), and continues to show a general trend of decreasing concentrations over time. However, the plume still exhibits concentrations greater than we can exp lain if there were no further Tritium inputs to the groundwater; i.e., the plume would attenuate more quickly than observed based on
1) Tritium's lack of partitioning to solid materials in the subsurface; 2) the crystalline nature and low storativity of the bedro ck; and 3) the computed and observed groundwater transport rate. 58 While this document is the Q1 09 report, some post-Q1 sampling data became available prior to report finalization. As such, data germane to the discussion of Unit 2 SFP integrity was included herewith. 59 This hypothesized "retention mechanism" is supported by our understanding of the construction methods used for the IP2-SFP and adjacent structures, evaluations of contaminant concentration variability trends over short timeframes and precipitation ev ents, as well as the original tracer test results, as further described in Sections 7.0 and 8.0 of the Hydrologic Site Investigation Report. 60 It is also recognized that the potential exists for a fourth potential source of Tritium; that is any other leak or spill ab ove the upgradient portions of the Unit 2 Tritium plume.

Section 3.0 Data Evaluation June 22, 2010 Page 3-20 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 targeted round of tracer test samples was taken with the Q3 08 61 groundwater samples to help explain the generally increasing Tritium concentrations measured in MW-31-85, The results of this tracer testing was provided in the Q3 monitoring report (this information is summarized in a June 14, 2010 memo 62 provided in Appendix H). Overall, the primary finding of this evaluation was that tracer was still present proximate to, and downgradient of, the Unit 2 SFP. In addition, while the concentrations were reduced in magnitude, they generally matched the relative trends exhibited previously (pursuant to variation between proximate locations and over depth at individual locations), and the general plume shape remained approximately the same, with additional elongation towards the river. Given that approximately one and a half years had elapse from the initial tracer injection to the acquisition of these samples, we calculate that in the absence of groundwater storage (retention) mechanisms, the tracer should have been flushed from the groundwater flow system by that time. These data therefore provided additional support for the originally hypothesized retention mechanisms. Subsequently, additional tracer samples were collected in light of the above cited more recent Tritium peaks in MW-31 and MW-32. These data are summarized on Table H-1 in Appendix H. As can be seen from this more recent data, tracer concentrations still persist in the groundwater, nearly 2.5 years after tracer injection. These tracer data, including the Q3 08 data cited above, were plotted with time along with the corresponding Tritium data on Figure H-1

63. The recent peaks in Tritium concentrations in the most shallow levels of the wells cited above (MW-31-49 and MW-32-59) are clearly evident on Figure H-1. The figure also shows that tracer was not detected in MW-31-49 during the Tritium peak. While this could be viewed as inconsistent with the retention mechanism CSM, it is noted that this well samples a particularly large fracture in the uppermost portions of the bedrock
64. As such, particularly high groundwater flow volumes through this well may have provided sufficient dilution to drive the most recent tracer concentrations below detection limit. In addition, it is further noted that Tritium has been released from the Unit 2 SFP from three separate known locations 65 , while the tracer was released in only one location; potentially also explaining the Tritium peak with a lack of a tracer peak in this specific well. Conversely (and thus consistent with the retention mechanism CSM), while similar fracture conditions exist in MW-32-59, a tracer peak was observed, but only after a number of months had elapsed after the Tritium Peak. Therefore, a more delayed tracer peak may still arrive at MW-31-49. Notwithstanding this single potentially conflicting data point, it is equally important to note that a number of the other wells in this group have previously fallen below detection limits for tracer, and then subsequently rebounded back to detectable levels (e.g., MW-31-63, MW-31-85, MW-32-85 and MW-32-149). These data provide strong evidence that the hypothesized retention mechanism is operable, at least to some degree, because no new tracer has been released to the subsurface. Therefore, the rebound in tracer concentrations from non-detect, clearly supports introduction of additional tracer into the groundwater flow regime from a retained source in the vadose zone. In addition, the trend in the tracer concentrations for these four wells loosely follows the corresponding Tritium trend, most notably for wells MW-31-63, MW-31-85, MW-32-59 and MW-32-85.

61 IPEC Quarterly Long-Term Groundwater Monitoring Report, Quarters Two and Three, Report No. 3, February 6, 2009. 62 An initial version of this memo was included in the Quarters Two and Three 2008 Monitoring Report, February 6, 2009. 63 Figure H-1 includes Tritium data going back to early 2007, while the tracer data included only goes back to August 2008. Earlier tracer data was not included because graphing the associated higher concentrations would have required a scale that would mask the trends in the lower concentration, more recent data. The additional, earlier tracer data is included in the 2008 Hydrogeologic Site Investigation Report. 64 See the hydraulic conductivity values on Figure H-1, as well as the geophysical logs in Appendix C of the 2008 Hydrogeologic Site Investigation Report.

65 Tritium was released between 1990 and 1992 on the east side of the SFP, in 2005 from the shrinkage crack on the south side o f the pool and up until July 2007 from the pinhole leak on the north side of the pool. Tritium was only release one time in February 2006.next to the shrinkage crack leak (south side of pool).

Section 3.0 Data Evaluation June 22, 2010 Page 3-21 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 Overall, the more recent tracer analyses are consistent with the previous tracer data, and the associated CSM presented in the Final Report. As such, the current demonstration that the tracer persists in the groundwater flow regime over even much longer time frames now provides even stronger support for the existence of "retention mechanisms," as posited by the existing CSM for the IPEC site. In fact, a direct analog for "contaminant storage in dead-end bedrock fractures" is provided by the high tracer concentrations found above the upper packer in the vadose zone in RW-1 (see Memo in Appendix H). Therefore, given that Tritiated water behaves much as the tracer does, it should be expected that once highly Tritiated water has been released from the SFP, it becomes "trapped" (held in storage) and is slowly released to the groundwater flow regime over substantial per iods of time. These retention mechanisms therefore act as a continuing source to the groundwater and thus can explain the observed slow rate of Tritium concentration reduction in the Unit 2 plume. In addition, it would be expected that Tritium release from the retention mechanisms would be episodic, for example as associated with periods of increased infiltration from precipitation. Such episodic releases would be expected to result in the peaks in Tritium concentrations observed. As requested by the NRC, we have also included the precipitation records for the timeframe graphed on Figure H1 in an effort to correlate the Tritium/tracer peaks to rainfall events. Inspection of the precipitation plot between Dec-08 and Sep-09 shows a relative lack of rain during the beginning of this period and relatively more intense rainfall during the end of the period (starting about April/May-09). This trend generally appears to correspond to the low and high points of the Tracer/Tritium peaks. However, it is not at all clear that a similar correlation extends back in time before the Dec-08 time frame. Moreover, while it is widely recognized that chemical concentrations on sites contaminated with separate phase product are impacted by infiltration rates/groundwater elevation changes, it is rare to find a robust correlation. This is due to the spatial and temporal complexity of the mechanisms involved. Therefore, a high level of credibility in this observed short term tracer correlation is not warranted. However, despite all appropriate caveats on these limited data, the correlation does still appear to exist, at least to some limited extent. In addition, this interpretation is further supported by the general acceptance that variations in rainfall infiltration/groundwater elevations impact the rate and amount of vadose zone source contamination entering the groundwater flow regime. These data thus provide further support for the retention mechanism CSM posited herein. Therefore, the "peakiness" of the Tritium data over time, as well as the overall persistence of the Unit 2 Tritium plume do not, in and of themselves, demonstrate that the Unit 2 SFP must still be leaking. In fact, the currently observed behavior was predicted in the Final Investigation Report based on the then available data and the retention mechanism postulated within the overall CSM. 3.6.3 Tritium Plume Total Activity Analysis As discussed above, the individual well trend data, when viewed collectively, support a conclusion that the Tritium plume concentrations have been decreasing with time since monitoring began. Another method to analyze plume behavior is to compute the total Tritium activity in the plume at multiple snapshots over time. This procedure 66 was implemented for each quarterly Long Term Monitoring sampling round from Q2 2007 to Q1 2009. In addition, the 66 The individual sampling point Tritium concentrations were multiplied by the groundwater volumes in representative zones (discretized over area and depth), as computed using soil and bedrock effective porosities developed from the pumping and trace r tests (see the Hydrogeologic Site Investigation Report for further information).

Section 3.0 Data Evaluation June 22, 2010 Page 3-22 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 bounding Tritium concentrations from Figure 8.1 of the Hydrogeologc Site Investigation Report 67 have also been included as a starting point for the graph. These data are summarized as a histogram on Figure G-15 in Appendix G. As can be seen from the figure, the total Tritium activity in the plume downgradient of the Unit 2 SFP has shown a distinctly decreasing trend over time. The total Tritium activity in the plume has decreased 38 percent since Q2 2007, and has decreased by 88 percent when compared to the bounding level Tritium concentrations.

This general "first order" plume decay is what would be expected for a plume undergoing Monitored Natural Attenuation after source termination. These data indicate that the leaks in the Unit 2 SFP have been terminated and that Tritium levels will decrease, but at a decreasing rate, over time. However, the later time data on the Figure G-15 histogram can also be viewed as having reached a horizontal asymptote. This asymptote reflects a steady Tritium activity in the plume at a value of approximately 0.011 to 0.018 Ci

68. Dose computations, summarized in Appendix F, show that the computed groundwater discharge of Unit 2 Tritium conservatively amounts to approximately 0.1 Ci/yr.

69 For the plume to continue to retain the same Tritium activity over time, 0.1 Ci/yr of Tritium has to be continually supplied to the plume to replace that being lost through discharge from the groundwater. One possibility is that an unidentified leak still remains in the Unit 2 SFP. With Tritium at approximately 30,000,000 pCi/L in the SFP, a leak rate directly from the pool of only approximately 10 L/day 70 would be sufficient to provide the required Tritium input to the groundwater. While a constant plume Tritium activity unquestionably requires a Tritium input to the groundwater flow regime to balance the level of Tritium discharge, this fact does not demonstrate the existence of a leak in the SFP. As previously discussed, migration of stored Tritium from the vadose zone (retention mechanism) down into the groundwater flow regime could also supply the required Tritium input. For this mechanism to be plausible: 1. The amount of Tritium released from the known historic leaks must be large enough to continue to feed the plume after the leaks have been terminated;

2. The half-life decay of Tritium must be accounted for in computing the Tritium activity currently remaining from the terminated leaks;
3. There must be enough capacity in the retention mechanism (overburden pores and bedrock fractures) to store the Tritiated water; and
4. The amount of Tritium currently in storage must be relatively large compared to the yearly required release rate. As discussed in more detail in the following subsections, these four required criteria appear to be met. It appears that more than sufficient Tritium has been released and can be stored to support a stable plume consistent with that currently observed. Moreover, the retention 67 Hydrogeologic Site Investigation Report, January 7, 2008, prepared by GZA GeoEnvironmental, Inc, on behalf of Enercon Services, Inc., for Entergy Nuclear Northeast, Indian Point Energy Center, 450 Broadway, Buchanan, NY 10511. 68 See note on Figure G-15 regarding variability in Tritium activity estimate based on value adopted for bedrock effective porosity. 69 This discharge rate includes groundwater discharge to the Discharge Canal, the Hudson River, the Unit 2 VCB footing drain, t he Unit 1 NCD and SFDS (with the contribution of the Unit 1 SFPs leak added back in). 70 Given that the Unit 1 SFPs has recently been closed and drained, the approximately 0.05 Ci/yr historic addition of Tritium t o the groundwater from this source has been terminated. It has been assumed that this loss of Tritium input to the plume will be bal anced by a future reduction in the Tritium levels extracted by the NCD and SFDS, and therefore, the Unit 2 Tritium plume should remai n stable.

Section 3.0 Data Evaluation June 22, 2010 Page 3-23 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 mechanism should be able to continue to support steady state plume behavior for at least five to ten years.

Tritium Release Magnitude - There have been three documented leaks from the Unit 2 SFP. These leaks are briefly described below, with further detail provided in the Geohydrological Site Investigation Report. In each case, a value of 30,000,000 pCi/L was used for the initial Tritium activity of the pool water, which was then decreased based on half-life decay and the duration of the leak. The leak first discovered was the 1990 to 1992 crack leak on the east wall of the pool. The leak apparently started on October 1, 1990 with damage to the liner, and was

repaired on June 9, 1992, shortly after it was discovered. The leak rate was estimated to be as much as 50 gpd, with a total release of 35,000 gal. Assuming a SFP Tritium activity level of 30,000,000 pCi/L, the activity released was approximately 4.2 Ci. This translates into a current residual activity of approximately 1.6 Ci once half-life decay is accounted for. The second leak identified was the 2005 shrinkage crack leak. Initially, the leak rate averaged as high as 1.5 l/day (peak of about 2 l/day), with much lower leak rates thereafter. This leakage from the crack was contained once it was discovered which has eliminated any further release to the environment. However, the crack likely opened up prior discovery. During this time, it is estimated that up to 0.06Ci of Tritium was released. This value was computed based on the volume of water estimated to have been released from the interstitial space between the liner and the concrete SFP walls.

Given the relative recent occurrence of this leak, no half-life decay was applied to this

value. The third leak identified was the weld imperfection ("pinhole") in the north wall of the transfer canal. The weld dates back to the construction of the pool liner and it is therefore likely that the leak existed from at least 1980 until it was terminated in July 2007. The leak was characterized as a "1/8 inch pinhole". Such a hole in a 1/4 inch thick liner at a depth of 25 feet could leak at a rate of up to 2000 gpd. While the actual leak rate is not known, a value of 2000 gpd is clearly an overestimate because the required refilling rate would likely have been detected and investigated. For benchmarking purposes, a 1/32 inch diameter hole could leak up to 140 gpd, a value that would not necessarily be detectable during routine operation given that typical evaporations rates are estimated to be on the order of 200 gpd. Even reducing the leak to 50 gpd, a rate which is consistent with that estimated for the 1990 to 1992 leak, results in a release of approximately 28 Ci, after accounting for half-life decay. To be conservative in our analysis, this value was further reduced by an order of magnitude to 5 gpd, resulting in a residual Tritium activity of 2.8 Ci. Based on the above three documented leaks, approximately 4.5 Ci of Tritium (after half-life decay) has been computed to have been released into the formation

71.

71 It is recognized that if the amount of leakage exceeds the storage volume, then the excess leakage would be released directly to the groundwater, and therefore could not be counted as a potential stored source. However, the computed storage volume, as described in the next subsection, far exceeds the adopted leakage volume. It is also recognized that some Tritium activity wou ld have been released from storage (due to precipitation infiltration, etc.) during the period of ongoing leakage. While this volume would contribute to the historic plume, it would no longer be available as a source for future plume generation. Given that groundwater sampling data is not available prior to 2005, the rate of this historic Tritium release from storage cannot be determined. However, any reasonably likely degree of overestimation of the computed current storage volume should be accounted for within t he Section 3.0 Data Evaluation June 22, 2010 Page 3-24 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 Tritium Storage capacity - As discussed in more detail in the Geohydrologic Site Investigation Report, Tritiated water released from the Unit 2 SFP must migrate through the vadose zone prior to entering the saturated groundwater flow regime. During migration to the groundwater table, the Tritiated water encounters a number of features, both naturally occurring (such as dead end fractures in the bedrock) and anthropogenic (such as backfill above concrete foundations and/or fractures created during construction blasting) where the water can become trapped and stored. Additional water, such as from infiltration of precipitation, entering these features over time can displace some of the Tritiated water causing it to resume its migration to the water table. Once this stored water enters the groundwater flow regime, it acts as a continuing source which "feeds" and maintains the plume

72. For the retention mechanism SCM to be realistic, sufficient capacity must exist to store substantial amounts of Tritiated water for long time periods. To evaluate the sufficiency of the available capacity, the total volume of the probable storage was computed using the following

data: Natural bedrock fractures in the unsaturated zone were computed to result in a bedrock porosity of 0.3%; of which 10% (0.03% porosity) were assumed to be dead ended and could provide storage capacity; Construction blasting was assumed to increase the natural fracturing of the bedrock proximate to foundations by a factor of 3, with 2/3s of these fractures being dead ended resulting in a storage porosity of 0.06%; A six inch soil backfill thickness with a porosity of 20% was assumed to be saturated above foundation working mats. The above porosities were applied only to areas which could intercept Unit 2 SFP leakage prior to it reaching the water table. As such, zones utilized in the computation included: Bedrock only between elevation 51 (bottom of Unit 2 SFP) and the water table elevation; Bedrock only in areas above the upper portion of the plume which appear to be potential source areas; Backfill above structure mud mats only in areas east of VCB and above plume; and Soil in the immediate vicinity of MW-111. As such, potential storage volume not considered, so as to be conservative, include: Any bedrock fractures or soil porosity within the saturated zone; Any capillary retention in vadose zone soils; Any mud mat not above the plume; Any mud mat west of the VCB; Anything above elevation 51'; and Anything downgradient of MW-111 uncertainty associated with the conservative final reduction in the assumed leak rate of the weld imperfection (i.e., from 50 gpd to 5 gpd). 72 In addition to storage in the vadose zone, storage can also occur in dead end fractures, etc in the saturated zone.

Section 3.0 Data Evaluation June 22, 2010 Page 3-25 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 The above outlined computations resulted in an estimated storage capacity of 38Ci. Tritium Storage Relative to Release Rate - As discussed above, the Tritium in storage must be large relative to the release rate needed to maintain the plume. Otherwise, the yearly reduction in the stored activity would quickly begin to deplete the storage, which would then be reflected in a decreasing release rate, and thus an attenuating total plume activity (i.e., not constant as potentially indicated by the histogram). The total estimated Tritium activity in storage has been computed to be at least 4.5 Ci. This is the lower of the values estimated for Tritium released (4.5 Ci) and storage capacity (38 Ci). This value is 45 times larger than the estimated Tritium release rate required to maintain the Unit 2 Tritium plume in its current state. As such, it appears that there is more than sufficient Tritium in storage to maintain the existing plume for at least ten years. That is, after ten years of 0.1 Ci/yr storage depletion, 35 times the annual depletion would still remain. Therefore, one would not expect to see a substantial decrease in rate of release from storage over that period of time, and thus the plume activity should remain stable.

3.6.4 Collection

Box Data As discussed more fully in the Hydrogeologic Site investigation report, once the 2005 shrinkage crack leak was found, leakage from the crack was thereafter contained and collected, and no longer could/can enter the subsurface environment. The containment currently consists of a stainless steel box ("Collection Box") which was sealed to the concrete wall over the crack area in February 2006

73. This box is drained to a collection vessel where the volume is measured and routine samples are taken for analysis. As shown on Figure I-1, the leak rate has been episodic with typical prolonged rates of < 20mL/day, separated by relatively shorter periods of higher leak rates (>200 mL/day). The periods of higher leak rate generally appeared to occur during the spring, at least initially. It is important to view this leak rate in the context of the total leak volume, which has only been approximately 100 liters (about 25 gallons) over the four years since the leak was discovered, or a little over two fluid ounces per day. Once the high leak rate just after initial crack discovery subsided, the rate has averaged only a little over one fluid once per day. It is also important to note that there have been no detections of short lived radionuclides in the leakage water after the 2005 discovery of the leakage
74. In addition, while the Tritium activity increases with increased leak rate 75 , the levels are well below the activity in the pool
76. Therefore this water is not coming directly from the fuel pool, but rather, has been stored between the stainless steel liner and the concrete SFP wall. As discussed above, SFP water clearly entered this interstitial space during the 1990 to 1992 leak, as well as from the weld imperfection in the Transfer Canal liner (terminated in July 2007). A number of hypotheses have been developed over time to explain the continuing leakage, both with respect to generation of the water as well as its variable Tritium activity. However, no single hypothesis provides a completely compelling explanation encompassing all the data. The individual conceptual models include:

73 Between the crack discovery in 2005 and installation of the permanent leak collection box in February 2006, temporary containment and collection systems were used. 74 During the earliest sampling events, Cesium 134 was initially detected. The Cesium 134 to Cesium 137 ratio implied an age f or the water of 5 to 9 years. However, it is not clear that this sample wasn't contaminated with material from the wall surface, which could have been associated with historic cask wash pit leakage down along the wall. This joint between the cask wash pit floor and SFP wall has since been reconstructed and sealed. 75 It is also noted that Boron concentrations and gamma activity also increase with increased leakage rates. 76 While the Tritium levels in the pool are generally about 30,000,000 pCi/L, the maximum level in the leak water after the 200 5 discovery has been 15,000,000 pCi/L with levels typically around 10,000,000.

Section 3.0 Data Evaluation June 22, 2010 Page 3-26 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 Initially, it was hypothesized that the higher leak rate periods occurred during refueling events, which also occur in the spring. Potentially, refueling could have caused the liner to flex, thus "squeezing" the interstitial space and expelling stored water out of the crack.

However, refueling only occurs every other year, so the peak in 2007 would not be coincident with a refueling event. It also has been hypothesized that the spring melt and rainfall events could be responsible for the increased leak rate. This would require a mechanism 77 to allow infiltrating precipitation to flow through an upper elevation crack(s) in the concrete SFP wall (located at a higher elevation than the "2005 crack" at elevation 61') and pool in the interstitial space between the stainless steel liner and the wall. This water 78 could replenish the volume in the interstitial space, migrate to, and then flow out of the 2005 crack into the collection box. The spring peaks in the collection box also appeared to at least loosely correlate with episodic Tritium peaks in MW-31 and MW-32 (see Figure G-2 and G-3), both hypothesized to be driven by variable infiltration events. More recent data, however, has shown that the leak rate peak in the spring of 2008 was subsequently followed by multiple peaks over the entire year. The increased number of peaks in 2008 was then followed by the 2009 which contained no peaks through late summer, even though we had a very wet late spring/early summer. The most recent collection box data from September 2009 has once again exhibited peaks in the leak rate. The two peaks observed appear to correlate with insertion of the HI-TRAC into the pool. The mechanism leading to the increased leakage is currently not understood but could be related to operations associated with dry cask storage. Current hypotheses Indicate the increased leakage could be related to: 1) the weight of the equipment outside the pool on the floor slab next to the SFP wall - the slab is structurally integrated with the wall so slab flexure could also flex the wall and liner; 2) the weight of the HI-TRAC on the liner floor within the pool; and/or 3) the potential increased water levels in the pool during HI-TRAC submergence. A number of dry cask tests were also performed in 2008, which could therefore be related to the relatively high number of

lower level peaks that year. Given the currently available data, a definitive explanation for the episodic leakage rate into the collection box has not yet been determined. Additional data is currently being collected to provide further insight into potential operable mechanisms. Independent of the mechanism(s) 77 During the spring melt, it is likely that greater than average amounts of infiltrating water migrates over and through the vadose zone bedrock. However, this water should generally not be able to reach the Unit 2 SFP wall because the wall is separated from the bedrock by a "blast rock" backfill. The generally high hydraulic conductivity of this material allows rapid downward flow to the bottom of the backfill before the infiltrating water can reach the wall. As such, this infiltrating water should not enter cracks in the upper portion of the SFP wall. However, it is likely that during construction, the backfilling process took substantial time to comp lete. Rainstorms occurring during this period could easily have washed surface erosion materials (mud) into the partially backfilled excavation. This "mud" would form a low hydraulic conductivity layer on top of the backfill, between the bedrock and the wall, which would then be filled over with more blast rock backfill. In addition, layers of less conductive fill may have also been used as part of the backfilling process. If one of these low conductivity layers was positioned just below a crack in the wall, infiltrating water could pond on top of the layer and then flow into the crack. While this hypothesized conceptual model requires a number of coinciden t conditions, and could therefore be judged improbable, it is noted that this condition appears to exist at the MOB. In this cas e, infiltrating water is routinely observed to leak through the wall causing wet conditions in the building, even though the floor slab is well above the water table. 78 It was recognized that the infiltrating water would carry no Tritium activity and would have to mix with the water already in the interstitial space to gain the activity needed to match that of the leakage. This infiltration of clean water should not result in significant dilution of the stored water given the relatively small amount of total leakage to date as compared to the estimate d volume of the interstitial space.

Section 3.0 Data Evaluation June 22, 2010 Page 3-27 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 responsible, once water enters the collection box, this "leakage" is collected and properly disposed of and thus cannot enter the subsurface environment

79. 3.6.5 Minimum Detectable Leak Rate To date, much investigative work has been completed on the Unit 2 SFP liner and a robust long

term groundwater monitoring system has been installed. While there is no compelling data demonstrating that an undetected leak remains in the Unit 2 SFP, it is also clear that there can never be sufficient data to guarantee that this SFP is completely leak free - i.e., that no leak of any size still exists. Quantification of the maximum probable size of a leak that could remain undetected by the long term monitoring system wa s therefore undertaken. The objective of this work is to provide a conservative quantitative value which can be compared to permitted levels of Tritium discharge to the river through the Discharge Canal. This comparison can then provide insight into the potential dose significance of a potential undetected leak to the

groundwater regime. The amount of Tritium activity flowing in the groundwater plume to the river has been computed to be approximately 0.1 Ci/yr. For pool water at 30,000,000 pCi/L, this equates to leak rate of approximately 10 L/day, or about 2.5 gallons per day (gpd). Therefore, it would be expected that a new leak at a rate of 2.5 gpd would double the Tritium levels in the plume over time. A doubling of the Tritium levels should be detectable once most of the wells exhibit this trend.

Therefore, the increasing trend in Tritium levels from a 2.5 gpd new leak may take an extended time to become evident. Another metric that can provide potential insight into the minimum potential leak rate is the tracer study previously conducted at the IPEC site. Based on a computation accounting for tracer and Tritium source concentrations, as compared to their respective detection limits, it appears that a Tritium leak of on the order of 5 gallons should be detectable at MW-32 (the monitoring installation with the greatest response during the tracer test). Other monitoring installations proximate to the Unit 2 SFP would therefore be expected to require higher leak rates based on the tracer test. In addition, it is also noted that the tracer injection was all introduced into the formation over a very short period of time. Therefore, a higher leak volume would likely be required if it occurred over a longer period of time. Finally, conclusions based on the tracer testing are all contingent on the location of the single tracer injection relative to the monitoring well locations. Leaks in other SFP locations would be expected to behave differently. Given the above data and analyses, and also accounting for the substantial level of uncertainty involved, we believe that a new leak of SFP water of a magnitude between 10 to 30 gpd should be detectable with the current Long Term Monitoring Program within a relatively few monitoring quarters.

3.6.6 Conclusions

- Unit 2 SFP integrity Overall, the preponderance of the data demonstrate that the Tritium activity in the plume has decreased substantially since groundwater monitoring began. However, it is also apparent that the rate of decrease is slower than would be expected if no additional Tritium was being 79 While this leakage cannot enter the environment, it is possible that other unidentified cracks exist in the SFP concrete wal l which could release similarly generated water into the subsurface formation.

Section 3.0 Data Evaluation June 22, 2010 Page 3-28 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 released into the groundwater flow regime. The original CSM, as outlined in the Hydrogeologic Site Investigation Report, includes a "retention mechanism" that stores Tritiated water from historic liner leaks in the vadose zone, and then gradually and episodically releases some of this Tritium to the groundwater over time. The currently available data and analyses summarized herein, particularly including the most recent tracer data, provide further confirmation of the existence of this mechanism. This retention mechanism is expected to be capable of continuing to support the existing plume activity for at least five to ten years into the future, without any additional contribution of Tritium from a continuing or new leak in the Unit 2 fuel pool.

Therefore, the existing Tritium plume behavior does not provide a compelling argument that there is a continuing leak in the Unit 2 SFP. Given this conclusion and the recognition that Entergy has terminated all identified leaks in the Unit 2 SFP, the Unit 2 Tritium plume satisfies the requirements for Monitored Natural Attenuation (MNA). However, it is also recognized that there could still be a small continuing leak in the SFP that is also providing Tritium to the plume in addition to that released from the retention mechanism. The most recent data from the leak collection box indicates that pool water may be migrating around/through the liner and recharging the interstitial space between the liner and the SFP concrete wall. While any water that is released through the 2005 shrinkage crack in the wall is captured, contained and disposed of, and thus can not impact the groundwater, there may be other additional cracks in the wall which are not contained. If such additional cracks exist, it would not be unlikely that interstitial water could escape and eventually enter the groundwater regime (after also recharging the retention mechanism). While a continuing leak from the Unit 2 SFP cannot be ruled out, if such a leak(s) exists, it is small. Based on the analyses summarized above, we believe that the maximum leak rate from the Unit 2 SFP that could potentially remain undetected by the groundwater monitoring system is less than 10 to 30 gpd. It is also likely that if a small leak exists in the liner, it should not get worse with time, as based on liner evaluations previously conducted by Entergy

80. It is further emphasized that while a leak of 10 to 30 gpd should be large enough to be readily detectable with the existing Long Term Monitoring Program, this amount of Tritium release to the river is still small compared to permitted levels of Tritium discharge to the river through the Discharge

Canal.

80 As part of the overall Unit 2 SFP liner integrity evaluation, Entergy undertook testing of a number of welds relative to the potential for ongoing corrosion, such as due to Microbial-Influenced Corrosion (MIC). It was concluded that there was no evidence of ongo ing corrosion.

FINAL QUARTERLY LONG-T ERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

June 22, 2010 Page 4-1 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92

4.0 CONCLUSION

S AND PLANNED ACTIVITIES Evaluation of data collected during Q1 2009 has shown the following: While I.L.s have been met at a number of locations, there is no evidence of new leaks from the Systems, Structures, or Components monitored, with the exception of the anticipated additional leakage from the Unit 1 SFPs and the recently observed leakage from the waste distillation tank valves within the Unit 1 FSB. Based on past work, additional leakage was expected during the raising of water levels in the Unit 1 SFPs for final fuel removal to ISFSI storage. The leakage from the Unit 1 SFPs was initially detected as pronounced increases in Strontium and Cesium in the monitoring locations closest to Unit 1. The recent leakage from the waste distillation tank valves was independently 81 identified based on an increase in Tritium levels in monitoring installations proximate to the tanks. As such, these data support the validity of the current CSM for use as a basis for Long Term Monitoring Program design. Based on the Q1 2009 data, as well as that collected during previous quarters, it currently appears that the Tritium I.L.s originally established are somewhat too sensitive relative to natural seasonal/precipitation-driven transient variations in radionuclide activities, as well as the variability inherent in the laboratory analyses. Relative to Strontium from the Unit 1 SFPs, the increases in activity in a number of monitoring points, due to the recent defueling activities, limit our ability to establish Strontium baseline levels for assessment of new I.L.s pursuant to the Monitored Natural Attenuation (MNA) of this plume. It is anticipated that this additional Strontium activity will take a number of quarters to flush through the groundwater flow system and attenuate to reasonably stable levels. .As such, the existing I.L.s will continue to be used until sufficient data is collected to allow re-evaluation of I.L. levels for the radionuclides of interest. The new data for Q1 2009 continue to show that the computed overall groundwater flow through the Site is greater than that previously computed for the 2007 reference data set. While the 2008 yearly rainfall was higher than that for 2007, it was only slightly higher. It appears that high frequency/intensity rainfall just prior to the 2008 and 2009 quarterly measurements may explain, at least in part, the higher computed flows. In addition, the process of drawing groundwater elevation contours evolved over time after 2007 as new information pursuant to the influence of plant structures on the groundwater flow field became available. This evolving process resulted in some changes to the general shapes of the contours, which impacted computed gradients and thus the flow rates. However, given the overall small variability of flow over the seasons monitored to date, as well as the recognition that the computed doses to the river are a small fraction of the permitted amounts, GZA believes that recalibrating the Precipitation Mass Balance Model, as used to compute groundwater flux through the Site as part of the radionuclide dose computation, is not warranted at this time. Once sufficient seasonal data has been collected (anticipated after the Q2 2009 sampling round), the model will be recalibrated to the quarterly data set that yields the largest groundwater flow values, so as to be conservative.

81 The valve leakage was initially identified during visual inspection rounds and quickly repaired. However, given that the leak was within the Unit 1 FSB structure, it was not documented in the GPI program. This valve leak and repair subsequently came to light within the GPI program during investigations into the cause of the abrupt increase in Tritium leve ls in MW-42. Reporting of such leaks has now been included in the GPI program operations.

Section 4.0 Conclusions and Planned Activities June 22, 2010 Page 4-2 10-6-22 FINAL LTM 2009 Quarter One Report.doc File No. 01.0017869.92 Additional, more quantitative analyses have been completed to further investigate the integrity of the Unit 2 SFP. These analyses provide further support for the original conclusion that the Unit 2 SFP is no longer leaking. This conclusion, along with the observed decreases in Tritium levels within the plume, satisfy the requirements for Monitored Natural Attenuation (MNA). However, these analyses cannot definitively rule out the possibility of a remaining small leak. While it is not possible to quantify the size the minimum detectable leak with any degree of certainty, we believe that the maximum leak rate from the Unit 2 SFP that could potentially remain undetected by the groundwater monitoring system is less than 10 to 30 gpd. Given the currently available data, a definitive explanation for the episodic leakage rate into the Unit 2 SFP collection box has not yet been determined. Additional data is therefore currently being collected to provide further insight into potential operable mechanisms. This ongoing work is currently focused on HI-TRAC operations associated with dry cask storage. It is not yet possible to conclude that no leaks of any size remain in the Unit 2 SFP. However, if a small leak does exist, it is unlikely to get worse with time, as based on liner evaluations previously conducted by Entergy

82. It is further emphasized that while a leak of 10 to 30 gpd should be large enough to be readily detectable with the existing Long Term Monitoring Program, this amount of Tritium release to the river is still a small fraction of that which is currently permitted for release to the river through the Discharge Canal. The overall Sr-90 activity within the Unit 1 plume had generally been stable or decreasing in response to the West Pool demineralization activities conducted by Entergy beginning in 2006. However, the final defueling of the Unit 1 SFPs has resulted in a substantial increase in Strontium levels proximate to the SFPs, as well as initial indications of increases in the Strontium plume levels downgradient. This is as was predicted given the requirement to temporarily raise the pool levels for rod removal, thus increasing leakage rate from the SFPs
83. With time, it is expected that the levels proximate to the pool will decrease and levels downgradient of the pool will increase as this additional strontium contaminated water flushes through the groundwater flow system. It is expected that this flushing mechanism will be protracted given the aforementioned impact of partitioning on Strontium levels in the groundwater. However, over time it is expected that downgradient Strontium plume levels will also resume an overall downward trend once this perturbation is finished passing through the system. Based on the results and evaluation of the Q1 2009 groundwater monitoring within the context of the Long Term Monitoring Program, IPEC plans to continue routine groundwater sampling and related maintenance. This work will be conducted in accordance with the IPEC Radiological Groundwater Monitoring Program IP-SMM-CY-110, and will incorporate the enhancements suggested by the NRC as described herein.

82 As part of the overall Unit 2 SFP liner integrity evaluation, Entergy undertook testing of a number of welds relative to the potential for ongoing corrosion, such as due to Microbial-Influenced Corrosion (MIC). It was concluded that there was no evidence of ongo ing corrosion. 83 As of late 2008, all the fuel rods have been removed from the Unit 1 SFPs and the pool water has been drained. As such, the Unit 1 SFPs is no longer an active source of radionuclides to the subsurface.

FINAL QUARTERLY LONG-TERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

TABLES Table 1 Groundwater Sampling Methods, Equipment, Frequency, and Depths Table 2 2009 1st Quarter Low Tide Groundwater Elevations Table 3 2009 1st Groundwater Analytical Results and Averages Table 4 2009 1st Quarter Groundwater Analytical Results Table 5 Historic Groundwater Analytical Results TABLE 1 GROUNDWATER SAMPLING METHODS, EQUIPMENT, FREQUENCY AND DEPTHSINDIAN POINT ENGERGY CENTER BUCHANAN, NYTopBottomTopBottomFeet Below TOC Elevation in Feet mslMW-30-69Waterloo Low FlowWaterloo Multilevel SystemQuarterly67.371.38.44.469.36.4MW-30-84Waterloo Low FlowWaterloo Multilevel SystemQuarterly77.385.4-1.6-9.583.8-8.1MW-31-49Waterloo Low FlowWaterloo Multilevel SystemQuarterly34.849.340.826.348.826.8 MW-31-63Waterloo Low FlowWaterloo Multilevel SystemQuarterly55.363.820.311.863.312.3 MW-31-85Waterloo Low FlowWaterloo Multilevel SystemQuarterly69.885.45.8-9.684.8-9.2 MW-32-59Waterloo Low FlowWaterloo Multilevel SystemQuarterly28.361.348.815.858.818.3 MW-32-85Waterloo Low FlowWaterloo Multilevel SystemQuarterly79.392.8-2.2-15.785.385.3 MW-32-131Waterloo Low FlowWaterloo Multilevel SystemInactive125.8138.3-48.7-61.2130.8-53.7 MW-32-149Waterloo Low FlowWaterloo Multilevel SystemQuarterly125.8156.8-70.2-79.7149.3-72.2 MW-32-173Waterloo Low FlowWaterloo Multilevel SystemQuarterly165.8174.3-88.7-97.2172.8-95.7 MW-32-190Waterloo Low FlowWaterloo Multilevel SystemQuarterly180.3193.9-103.2-116.8190.3-113.7 MW-33Low FlowPeristaltic PumpAnnually8.030.010.6-11.7162.8 MW-34LowFlowPeristalticPumpInactive 5.0 30.0 13.5-11.5 16.5 2.0SAMPLING DEPTH 4 Sampling Method Well ID 1 Sampling Equipment UsedSAMPLING INTERVAL 3Ft Below Top of Casing Elevation in Feet mslProjected 2009 Sampling Frequency 2 MW-34Low FlowPeristaltic PumpInactive 5.0 30.0 13.5-11.5 16.5 2.0MW-35Low FlowPeristaltic PumpAnnually6.530.012.1-11.415.03.6 MW-36-24 5Low FlowPeristaltic PumpQuarterly11.024.00.8-12.217.0-5.2MW-36-41Low FlowPeristaltic PumpInactive36.041.0-24.2-29.237.0-25.2MW-36-52Low FlowPeristaltic PumpQuarterly48.053.0-36.2-41.250.0-38.2 MW-37-22Low FlowPeristaltic PumpQuarterly12.022.03.0-7.017.0-2.0 MW-37-32Low FlowPeristaltic PumpQuarterly28.032.5-13.0-17.529.0-14.0 MW-37-40Low FlowPeristaltic PumpQuarterly38.540.5-23.5-24.539.0-24.0 MW-37-57Low FlowPeristaltic PumpQuarterly52.057.0-37.0-42.055.0-40.0 MW-38Low FlowPeristaltic PumpInactive5.040.09.3-25.725.4-11.1 MW-39-67Waterloo Low FlowWaterloo Multilevel SystemBi-Annually65.070.515.09.567.013.0 MW-39-84Waterloo Low FlowWaterloo Multilevel SystemBi-Annually76.585.03.5-5.083.5-3.5 MW-39-102Waterloo Low FlowWaterloo Multilevel SystemBi-Annually93.0103.0-13.0-23.0101.5-21.5 MW-39-124Waterloo Low FlowWaterloo Multilevel SystemBi-Annually115.0126.5-35.0-46.5124.0-44.0 MW-39-183Waterloo Low FlowWaterloo Multilevel SystemBi-Annually169.5186.0-89.5-106.0182.5-102.5 MW-39-195Waterloo Low FlowWaterloo Multilevel SystemBi-Annually193.0198.6-113.0-118.4195.0-115.0 MW-40-27Waterloo Low FlowWaterloo Multilevel SystemQuarterly18.235.255.038.026.746.5 MW-40-46WaterlooLowFlowWaterlooMultilevelSystemQuarterly442537290195462270 MW-40-46Waterloo Low FlowWaterloo Multilevel SystemQuarterly 44.2 53.7 29.0 19.5 46.2 27.0MW-40-81Waterloo Low FlowWaterloo Multilevel SystemQuarterly64.784.28.5-11.080.7-7.5 MW-40-100Waterloo Low FlowWaterloo Multilevel SystemQuarterly93.2106.7-20.0-33.5100.2-27.0 MW-40-127Waterloo Low FlowWaterloo Multilevel SystemQuarterly125.2136.7-52.0-63.5127.2-54.0 MW-40-162Waterloo Low FlowWaterloo Multilevel SystemQuarterly158.7190.3-85.5-116.9161.7-88.5 MW-41-40Low FlowPeristaltic PumpBi-Annually22.042.032.912.936.018.9 MW-41-63Modified Well Vol. PurgeWaterra Pump Bi-Annually59.064.0-4.1-9.161.0-6.1 MW-42-49Modified Well Vol. PurgeSubmersible PumpQuarterly31.051.038.718.741.028.7 MW-42-78Modified Well Vol. PurgeWaterra Pump Quarterly69.079.00.7-9.374.0-4.3 MW-43-28Low FlowSubmersible PumpBi-Annually8.028.040.820.723.025.8 MW-43-62Low FlowSubmersible PumpBi-Annually42.062.06.8-13.254.0-5.2 MW-44-66Modified Well Vol. PurgeSubmersible PumpQuarterly52.067.041.526.563.030.5 MW-44-102Modified Well Vol. PurgeWaterra Pump Quarterly79.0104.014.5-10.580.013.5 MW-45-42Modified Well Vol. PurgePeristaltic PumpQuarterly27.542.526.211.237.016.6 MW-45-61Modified Well Vol. PurgePeristaltic PumpQuarterly51.561.52.2-7.858.0-4.4 MW-46Modified Well Vol. PurgeSubmersible PumpQuarterly6.030.012.1-11.910.57.6 MW-47-56Low FlowSubmersible PumpInactive36.056.034.314.352.018.3 MW-47-80ModifiedWellVol.PurgeWaterraPumpInactive 70.0 80.0 0.3-9.7 72.0-1.7 MW-47-80Modified Well Vol. PurgeWaterra Pump Inactive 70.0 80.0 0.3-9.7 72.0-1.7J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table1 - Q1.09.Methods, Frequency, Depths.xls; Methods, Frequency, DepthsPage 1 of 3See Page 3 for Notes TABLE 1 GROUNDWATER SAMPLING METHODS, EQUIPMENT, FREQUENCY AND DEPTHSINDIAN POINT ENGERGY CENTER BUCHANAN, NYTopBottomTopBottomFeet Below TOC Elevation in Feet mslSAMPLING DEPTH 4 Sampling Method Well ID 1 Sampling Equipment UsedSAMPLING INTERVAL 3Ft Below Top of Casing Elevation in Feet mslProjected 2009 Sampling Frequency 2MW-48-23Low FlowPeristaltic PumpInactive8.023.07.4-7.615.8-0.4MW-48-37Low FlowPeristaltic PumpInactive33.038.0-17.622.635.8-20.4MW-49-26Low FlowPeristaltic PumpQuarterly15.025.0-0.3-10.420.0-5.3 MW-49-42Low FlowPeristaltic PumpQuarterly32.042.0-17.4-27.437.0-22.3 MW-49-65Low FlowPeristaltic PumpQuarterly60.065.0-45.4-50.461.0-46.4 MW-50-42Low FlowPeristaltic PumpQuarterly22.042.0-7.1-27.127.0-12.1 MW-50-66Low FlowPeristaltic PumpQuarterly62.067.0-47.1-52.160.0-45.1 MW-51-40Waterloo Low FlowWaterloo Multilevel SystemQuarterly29.744.238.023.539.728.0 MW-51-79Waterloo Low FlowWaterloo Multilevel SystemQuarterly63.281.24.5-13.578.7-11.0 MW-51-104Waterloo Low FlowWaterloo Multilevel SystemQuarterly101.2111.2-33.5-43.5103.7-36.0 MW-51-135Waterloo Low FlowWaterloo Multilevel SystemQuarterly130.2143.7-62.5-76.0135.2-67.5 MW-51-163Waterloo Low FlowWaterloo Multilevel SystemQuarterly154.7166.2-87.0-98.5162.7-95.0 MW-51-189WaterlooLowFlowWaterlooMultilevelSystemQuarterly18421978-1165-12991892-1215 MW-51-189Waterloo Low FlowWaterloo Multilevel SystemQuarterly 184.2 197.8-116.5-129.9 189.2-121.5MW-52-11Modified Well Vol. PurgePeristaltic PumpAnnually2.012.014.84.810.06.8 MW-52-18Waterloo Low FlowWaterloo Multilevel SystemAnnually10.030.04.9-15.117.5-2.6 MW-52-48Waterloo Low FlowWaterloo Multilevel SystemAnnually48.056.0-33.1-41.148.0-33.1 MW-52-64Waterloo Low FlowWaterloo Multilevel SystemAnnually59.071.5-44.1-56.664.0-49.1 MW-52-122Waterloo Low FlowWaterloo Multilevel SystemAnnually110.5123.5-95.6-108.6122.0-107.1 MW-52-162Waterloo Low FlowWaterloo Multilevel SystemAnnually154.5164.0-139.6-149.1161.5-146.6 MW-52-181Waterloo Low FlowWaterloo Multilevel SystemAnnually171.0198.1-156.1-183.0181.0-166.1 MW-53-82Low FlowSubmersible PumpQuarterly62.082.08.3-11.775.0-4.7 MW-53-120Modified Well Vol. PurgeWaterra Pump Quarterly100.0120.0-29.7-49.7105.0-34.7 MW-54-37Waterloo Low FlowWaterloo Multilevel SystemQuarterly29.042.0-15.9-28.936.5-23.4 MW-54-58Waterloo Low FlowWaterloo Multilevel SystemQuarterly51.564.0-38.4-50.957.5-44.4 MW-54-123Waterloo Low FlowWaterloo Multilevel SystemQuarterly116.0126.0-102.9-112.9123.0-109.9 MW-54-144Waterloo Low FlowWaterloo Multilevel SystemQuarterly135.0155.5-121.9-142.4144.0-130.9 MW-54-173Waterloo Low FlowWaterloo Multilevel SystemQuarterly170.5182.0-157.4-168.9172.5-159.4 MW-54-190Waterloo Low FlowWaterloo Multilevel SystemQuarterly185.0203.6-171.9-190.3190.0-176.9 MW-55-24Low FlowPeristaltic PumpQuarterly14.024.04.3-5.816.02.3

M W-55-35 L ow Fl ow P e ri sta l t i c P u m p Qua r te rl y 30.0 35.0-11.8-1 6.8 3 2.0-1 3.8 MW-55-35Low FlowPeristaltic PumpQuarterly 30.0 35.0-11.8-16.8 32.0-13.8MW-55-54Low FlowPeristaltic PumpQuarterly44.054.0-25.8-35.847.0-28.8 MW-56-53Modified Well Vol. PurgeSubmersible PumpBi-Annually49.254.221.016.052.018.3 MW-56-83Modified Well Vol. PurgeWaterra Pump Bi-Annually69.984.90.4-14.674.0-3.7 MW-57-11Modified Well Vol. PurgePeristaltic PumpBi-Annually6.011.09.04.010.05.0 MW-57-20Modified Well Vol. PurgePeristaltic PumpBi-Annually15.520.5-0.5-5.519.0-4.0 MW-57-45Modified Well Vol. PurgePeristaltic PumpBi-Annually30.545.5-15.5-30.540.0-25.0 MW-58-26Low FlowPeristaltic PumpBi-Annually16.026.0-1.4-11.420.0-5.4 MW-58-65Low FlowPeristaltic PumpQuarterly50.065.0-35.4-50.454.0-39.4 MW-59-32Low FlowPeristaltic PumpInactive21.031.0-6.5-16.527.0-12.5 MW-59-45Low FlowPeristaltic PumpInactive35.045.0-20.5-30.542.0-27.5 MW-59-68Low FlowPeristaltic PumpInactive53.068.0-38.5-53.558.0-43.5 MW-60-35Waterloo Low FlowWaterloo Multilevel SystemQuarterly24.939.4-12.4-26.934.9-22.4 MW-60-53Waterloo Low FlowWaterloo Multilevel SystemQuarterly45.459.4-32.9-46.953.4-40.9 MW-60-72Waterloo Low FlowWaterloo Multilevel SystemQuarterly66.478.9-53.9-66.472.4-59.9 MW-60-135Waterloo Low FlowWaterloo Multilevel SystemQuarterly124.9141.4-112.4-128.9134.9-122.4 MW-60-154Waterloo Low FlowWaterloo Multilevel SystemQuarterly147.4164.9-134.9-152.4154.4-141.9MW-60-176Waterloo Low FlowWaterloo Multilevel S y ste m Quarterl y170.9200.4-158.4-187.8175.9-163.4MW60176Waterloo Low FlowWaterloo Multilevel SystemQuarterly 70.9 00.58.87.8 175.9 163.4J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table1 - Q1.09.Methods, Frequency, Depths.xls; Methods, Frequency, DepthsPage 2 of 3See Page 3 for Notes TABLE 1 GROUNDWATER SAMPLING METHODS, EQUIPMENT, FREQUENCY AND DEPTHSINDIAN POINT ENGERGY CENTER BUCHANAN, NYTopBottomTopBottomFeet Below TOC Elevation in Feet mslSAMPLING DEPTH 4 Sampling Method Well ID 1 Sampling Equipment UsedSAMPLING INTERVAL 3Ft Below Top of Casing Elevation in Feet mslProjected 2009 Sampling Frequency 2MW-62-18Low FlowPeristaltic PumpQuarterly4.714.710.00.013.51.2MW-62-37Low FlowPeristaltic PumpQuarterly33.338.3-18.6-23.634.5-19.8MW-62-53Waterloo Low FlowWaterloo Multilevel SystemQuarterly49.654.1-36.8-41.353.1-40.3 MW-62-71Waterloo Low FlowWaterloo Multilevel SystemQuarterly61.182.6-48.3-69.871.1-58.3 MW-62-92Waterloo Low FlowWaterloo Multilevel SystemQuarterly88.699.1-75.8-86.391.6-78.8 MW-62-138Waterloo Low FlowWaterloo Multilevel SystemQuarterly126.1143.6-113.3-130.8138.1-125.3 MW-62-182Waterloo Low FlowWaterloo Multilevel SystemQuarterly177.6198.7-164.8-185.7182.1-169.3 MW-63-18Low FlowPeristaltic PumpQuarterly8.018.0-3.8-13.814.90.7 MW-63-34Low FlowPeristaltic PumpQuarterly30.035.0-15.8-20.831.5-17.3 MW-63-50Waterloo Low FlowWaterloo Multilevel SystemQuarterly41.558.0-29.2-45.749.5-37.2 MW-63-93Waterloo Low FlowWaterloo Multilevel SystemQuarterly81.5100.5-69.2-88.293.0-80.7 MW-63-112Waterloo Low FlowWaterloo Multilevel SystemQuarterly106.5112.0-94.2-99.7111.5-99.2 MW-63-121WaterlooLowFlowWaterlooMultilevelSystemQuarterly11801275-1057-11521210-1087 MW-63-121Waterloo Low FlowWaterloo Multilevel SystemQuarterly 118.0 127.5-105.7-115.2 121.0-108.7MW-63-163Waterloo Low FlowWaterloo Multilevel SystemQuarterly150.5165.0-138.2-152.7162.5-150.2 MW-63-174Waterloo Low FlowWaterloo Multilevel SystemQuarterly168.0191.1-155.7-178.6174.0-161.7 MW-66-21Modified Well Vol. PurgePeristaltic PumpQuarterly7.027.06.0-7.014.10 MW-66-36Modified Well Vol. PurgePeristaltic PumpQuarterly31.036.0-17.0-22.033.6-19.5 MW-67-39Waterloo Low FlowWaterloo Multilevel SystemQuarterly28.854.3-15.8-41.338.3-25.8 MW-67-105Waterloo Low FlowWaterloo Multilevel SystemQuarterly90.3110.8-77.3-97.8104.8-92.3 MW-67-173Waterloo Low FlowWaterloo Multilevel SystemQuarterly164.8188.3-151.8-175.3172.3-159.8 MW-67-219Waterloo Low FlowWaterloo Multilevel SystemQuarterly209.3229.8-196.3-216.8218.8-206.3 MW-67-276Waterloo Low FlowWaterloo Multilevel SystemQuarterly250.8281.3-237.8-268.3275.3-262.8 MW-67-323Waterloo Low FlowWaterloo Multilevel SystemQuarterly317.8328.3-304.8-315.3322.3-309.8 MW-67-340Waterloo Low FlowWaterloo Multilevel SystemQuarterly335.3347.9-322.3-334.9339.8-327.3 MW-107Low FlowSubmersible PumpAnnually105.1126.134.913.932.7110.1 MW-111Low FlowPeristaltic PumpBi-Annually11.617.47.01.516.52.4 U3-4DModified Well Vol. PurgePeristaltic PumpQuarterly25.027.6-10.2-12.825.6-10.8 U3-T1Low FlowPeristaltic PumpQuarterly0.21.23.12.15.72.8 U3-T2Low FlowPeristaltic PumpQuarterly0.61.62.71.75.72.6 U 1-CSS L ow Fl ow P e ri sta l t i c P u m p Bi-Ann ua ll y N A1 0.2 N A4.9 14.0 6.1 U1-CSSLow FlowPeristaltic Pump Bi-Annually NA 10.2 NA 4.9 14.0 6.1LAF-002Low FlowNABi-AnnuallyNANANANANA-22.3 U1-NCDGrabNAQuarterlyNANANANANANA U1-SFDSGrabNAQuarterlyNANANANANANA MH-5 6GrabNAInactiveNANANANANANA B-1 6GrabNAInactiveNANANANANANA B-6 6GrabNAInactiveNANANANANANANotes:1. For nested multi-level monitoring wells, suffix of well ID indicates depth (rounded to nearest foot) from reference point on casing to bottom of well screen. For Waterloo multi-level systems, suffix indicates depth (rounded to nearest foot) from reference point on casing to top of sampling port. Well IDs without a suffix are open bedrock wellbores.

2. Projected sampling frequencies presented for 2009 are subject to change.
3. For nested multi-level montoring wells, interval includes well screen and sand pack. For Waterloo multi-level systems, interval includes open wellbore between bottom of 1st packer above and top of 1st packer below sampling port. For open bedrock wellbores, interval extends from bottom of casing to bottom of hole.4. Sampling depths within sampling intervals (i.e. location of pump intake) have been located adjacent to a transmissive zone where possible.5. Dot pattern denotes sampling interval is positioned within overburden. Open box indicates sampling interval is in bedrock.6. These locations are storm drains.J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table1 - Q1.09.Methods, Frequency, Depths.xls; Methods, Frequency, DepthsPage 3 of 3See Page 3 for Notes TABLE 2 QUARTERLY LOW TIDE GROUNDWATER ELEVATIONSINDIAN POINT ENERGY CENTERBUCHANAN, NYQuarter 2 1, 2008Quarter 3 2, 2008Quarter 4 3, 2008Quarter 1 4 , 2009HR1-1.13-1.05-1.69-3.28I252.1152.9050.75NA MW-30-6912.2811.7711.7112.33 MW-30-8413.0612.6812.3613.13 MW-31-4946.1445.3944.1346.44 MW-31-6343.9642.1741.2144.12 MW-31-8541.8940.5839.6442.10 MW-32-4847.7746.9845.7948.08 MW-32-5946.7545.7244.4846.83 MW-32-8513.1712.3012.1612.60 MW-32-13115.6711.3411.5311.86 MW-32-14910.049.719.7710.00 MW-32-1739.709.459.459.68 MW-32-1907.527.167.057.24 MW-3311.6610.5510.6011.23 MW-3412.0310.5410.5411.25 MW-3512.0610.6810.6811.36 MW-36-246.867.589.05NA MW-36-526.296.997.458.12 MW-37-224.185.365.554.45MW3732405536564455Well ID LOW RIVER TIDE GR OUNDWATER ELEVATIONS(Feet msl)

MW-37-32 4.05 5.36 5.64 4.55MW-37-405.956.186.045.46MW-37-576.076.647.206.50 MW-381.532.121.22NA MW-39-6731.6925.9625.2128.74 MW-39-8431.4825.7825.1228.62 MW-39-10031.3425.5224.7928.32 MW-39-102NANANANA MW-39-12430.6725.0724.4327.74 MW-39-18329.8322.3323.7926.78 MW-39-19528.8923.3522.7025.63 MW-40-2759.9954.7054.2259.53 MW-40-4659.0952.5752.3559.13 MW-40-8155.7847.2846.8355.67 MW-40-10053.7544.8344.3253.59 MW-40-12753.3944.3343.8753.29 MW-40-16250.2641.3240.6649.76 MW-41-4033.8131.2830.7133.62 MW-41-6332.7627.5326.9630.38 MW-42-4934.8134.5234.4334.78 MW-42-7836.2835.3835.0736.03 MW-43-2833.9532.5132.1533.43 MW-43-6232.1630.4831.7634.13 MW-44-6635.4735.2934.0034.96MW441023088258625162809MW-44-10230.8825.8625.1628.09 MW-45-4237.1628.6325.4532.02 MW-45-6132.4627.1626.6829.99 MW-4614.9712.6212.8114.29 MW-47-5731.5322.8422.3726.51 MW-47-8028.3521.5221.0826.37 MW-48-23-0.23-0.18-0.48-0.91 MW-48-380.320.06-0.15-0.50 MW-49-260.510.370.49-0.25 MW-49-420.921.020.68-0.06 MW-49-650.700.680.47-0.08 MW-50-425.246.407.065.66 MW-50-662.242.832.341.95 MW-51-4052.3549.4449.2449.32 MW-51-7944.1740.7140.3642.75 MW-51-10239.0436.5636.1738.18 MW-51-10439.0236.4936.0337.99 MW-51-13540.7138.1037.6839.75 MW-51-16336.7734.3033.9035.74 MW-51-18931.7929.6529.3630.81 MW-52-118.858.658.448.19 MW-52-186.075.896.025.78 MW-52-485.956.206.146.05 MW-52-645.035.215.165.20MW-52-1184.324.364.684.23 MW-52-1224.184.214.554.11 MW-52-162-0.80-0.98-1.30-2.07 MW-52-181-1.00-1.30-1.64-2.38 MW-53-8212.6010.35NA11.11 MW-53-12011.499.76NA10.55 MW-54-356.366.166.415.75 MW-54-376.536.306.585.90 MW-54-585.555.535.765.49 MW-54-1233.524.014.062.99 MW-54-1446.486.926.975.89 MW-54-1732.853.273.292.19 MW-54-1902.763.163.132.00MW-55-248.168.189.028.35J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table2 - Quarterly GW Elevations.xlsx; gw elevationsPage 1 of 2See Page 2 for Notes TABLE 2 QUARTERLY LOW TIDE GROUNDWATER ELEVATIONSINDIAN POINT ENERGY CENTERBUCHANAN, NYQuarter 2 1, 2008Quarter 3 2, 2008Quarter 4 3, 2008Quarter 1 4 , 2009Well ID LOW RIVER TIDE GR OUNDWATER ELEVATIONS(Feet msl)MW-55-357.597.698.307.63MW-55-548.328.228.82NA MW-56-5329.93NA21.9027.33 MW-56-8329.16NA21.5125.13 MW-57-11NA10.0310.2711.11 MW-57-2012.0710.029.9210.63 MW-57-4510.59NANA10.71 MW-58-26NA7.297.197.56 MW-58-657.367.136.466.68 MW-59-320.770.810.470.31 MW-59-459.23NA2.520.44 MW-59-68-0.11NA-1.79-5.66 MW-60-351.630.822.041.99 MW-60-53-1.37-1.76-2.03-2.70 MW-60-55-0.47-0.90-1.21-1.91 MW-60-72-0.14-0.64NA-1.43 MW-60-135-0.27-0.71-1.02-1.72 MW-60-154-1.49-1.91-2.25-2.99 MW-60-176-1.82-2.16-2.59-3.41 MW-62-180.130.06-0.12-0.82MW6237049059015113MW-62-370.490.59-0.15-1.13 MW-62-52-0.19-0.29-0.93-1.64 MW-62-53-0.10-0.16-0.84-2.03 MW-62-71-0.55-0.56-1.24-2.15 MW-62-92-0.11-0.10-0.85-1.68 MW-62-1380.130.26-0.37-1.33 MW-62-181-0.32-0.36-0.92NA MW-62-182-1.29-1.25-1.85-2.66 MW-63-180.090.32-0.08-0.64 MW-63-350.130.05-0.13-0.74 MW-63-50-0.47-0.55-1.24-2.08 MW-63-91-0.25-0.16-0.89NA MW-63-93-0.30-0.24-0.98-1.68 MW-63-112-1.69-1.60-2.26-3.14 MW-63-121-0.24-0.05-0.86-1.49 MW-63-163-0.86-0.90-1.54-2.46 MW-63-174-0.62-0.61-1.19-1.97 MW-65-4838.6043.22NA48.19 MW-65-8034.9732.9532.7233.71 MW-66-210.050.170.29-0.33 MW-66-360.350.150.10-0.86 MW-67-390.360.41-0.02-0.07 MW-67-1050.570.650.16-0.67 MW-67-173-0.28-0.26-0.82-1.62MW-67-219-0.32-0.32-0.86-1.87 MW-67-2760.440.41-0.14-1.03 MW-67-323-1.13-1.35-1.93-2.86 MW-67-340-0.87-0.96-1.56-2.42 MW-107118.94115.00115.76120.28 MW-10810.07NA9.029.65 MW-10910.127.827.88NA MW-11111.249.7410.4810.87 OUT10.81NANANA RW130.0429.5229.0529.10 U1CSS19.1115.39NA20.46 U3-1NANANANA U3-2NANANANA U3-39.258.258.949.13 U3-4D2.743.492.693.41 U3-4S3.974.313.814.01 U3-C10.992.360.810.64 U3-T13.864.333.693.83U3-T23.944.283.764.05 Notes:NA: data not available1. Quarter 2, 2008 groundwater elevations were measured on 4/4/08 at 5:14 pm.

2. Quarter 3 , 2008 groundwater elevations were measured on 7/10/08 at 11:35 am.
2. Quarter 3 , 2008 groundwater elevations were measured on 7/10/08 at 11:35 am.3. Quarter 4, 2008 groundwater elevations were measured on 11/11/08 at 2:54 am.
4. Quarter 1, 2009 groundwater elevations were measured on 1/9/09 at 2:42.J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table2 - Quarterly GW Elevations.xlsx; gw elevationsPage 2 of 2See Page 2 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageMW-30-69Q2-200801869.36.45/6/200811:00153000.003010.00406.000.330.400.670.491.833.21-0.571.712.73 NA 5NANA118900.00 ND 6NDNDNAMW-30-69MW-30-69Confirmatory 1201969.36.46/6/200811:0173600.002020.00506.000.200.320.56-0.982.103.270.492.243.85NANANA118900.00NDNDNDMW-30-69MW-30-69Q3-200802069.36.48/5/200811:22199000.003920.00495.000.210.310.53-0.161.422.381.111.282.33NANANA118900.00NDNDNDMW-30-69MW-30-69Mid-Quarter 1302169.36.49/3/200811:2985300.002030.00550.00-0.310.510.97-1.892.223.36NANANANANANA118900.00NDNDNAMW-30-69MW-30-69Q4-200802269.36.411/7/200810:2795500.002850.00306.000.410.550.600.783.093.66-0.112.652.85NANANA118900.00NDNDNDMW-30-69MW-30-69Q1-200902369.36.41/30/200911:00107000.002505.00198.00-0.090.760.97-1.132.612.661.062.703.24NANANA118900.00NDNDNDMW-30-69MW-30-84Q2-200800983.8-8.15/6/200813:404180.00283.00220.000.330.390.650.442.374.00-1.912.533.69NANANA4343.33ND8.97NDNAMW-30-84MW-30-84Confirmatory01083.8-8.16/6/200812:103850.00533.00504.000.150.250.43-0.902.163.572.052.314.29NANANA4343.33ND8.97NDMW-30-84MW-30-84Q3-200802083.8-8.18/5/200814:404310.00228.00194.000.280.290.47-0.191.442.35-0.102.122.66NANANA4343.33ND8.97NDMW-30-84MW-30-84Mid-Quarter02183.8-8.19/3/200811:593780.00513.00535.00-0.050.460.91-0.301.73289.00NANANANANANA4343.33ND8.97MW-30-84MW-30-84Q4-200801383.8-8.111/7/200810:505250.00323.00164.000.010.580.760.664.635.372.135.346.53NANANA4343.33ND8.97NDMW-30-84MW-30-84Q1-200901483.8-8.11/30/200911:214690.00547.50199.000.090.600.728.974.343.02-0.083.393.81NANANA4343.33ND8.97NDMW-30-84MW-31-49Q2-200800948.826.86/6/200815:0530400.001340.00469.000.280.340.571.111.933.471.722.013.82NANANA9519.00NDNDNDNAMW-31-49MW3149Q32008 0104882688/7/20081243594001330019200024027044071130223071149256 NA NA NA951900 ND ND NDMW3149SAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 (pCi/L)MW-31-49Q3-200801048.826.88

/7/200812:43594.00133.00192.000.240.270.440.711.302.230.711.492.56NANANA9519.00NDNDNDMW-31-49MW-31-49Mid-Quarter01148.826.88/30/200811:5513600.00861.00553.000.420.480.811.273.633.09NANANANANANA9519.00NDNDMW-31-49MW-31-49Q4-200801248.826.810/30/200811:30643.00225.00171.000.080.170.191.396.277.25-0.916.406.88NANANA9519.00NDNDNDMW-31-49MW-31-49Confirmatory01348.826.811/18/200811:15777.00179.00162.000.410.630.701.214.185.030.984.935.84NANANA9519.00NDNDNDMW-31-49MW-31-49Q1-200901448.826.82/6/200911:0511100.00786.00199.000.120.300.36-0.172.973.35-0.462.853.14NANANA9519.00NDNDNDMW-31-49MW-31-63Q2-200800963.312.36/6/200816:1610200.00792.00504.000.140.340.62-1.152.113.362.472.314.45NANANA18533.33NDNDNDNAMW-31-63MW-31-63Q3-200801063.312.38/7/200811:2217600.00417.00194.00-0.210.260.59-0.191.282.160.371.432.49NANANA18533.33NDNDNDMW-31-63MW-31-63Mid-Quarter01163.312.38/30/200812:3422100.001070.00549.00-0.630.440.980.382.354.04NANANANANANA18533.33NDNDNDMW-31-63MW-31-63Q4-200801263.312.310/30/200812:1423000.001080.00173.000.230.230.252.216.187.37-1.477.267.77NANANA18533.33NDNDNDMW-31-63MW-31-63Confirmatory01363.312.311/18/200811:5825500.00807.00184.000.400.740.840.015.896.01-0.526.546.97NANANA18533.33NDNDNDMW-31-63MW-31-63Q1-200901463.312.32/6/200911:5312800.00838.50197.000.640.640.68-1.323.423.63-0.753.864.17NANANA18533.33NDNDNDMW-31-63MW-31-85Q2-200800984.8-9.26/6/200815:265950.00630.00505.000.150.320.57-0.812.203.451.912.454.58NANANA5376.67NDNDNDNAMW-31-85MW-31-85Q3-200801084.8-9.28/7/200811:132300.00183.00194.000.110.290.53-0.651.221.940.021.312.18NANANA5376.67NDNDNDMW-31-85MW-31-85Mid-Quarter01184.8-9.28/30/200812:088340.00700.00552.000.450.490.81-0.551.863.07NANANANANANA5376.67NDNDNDMW-31-85MW-31-85Q4-200801284.8-9.210/30/200812:093890.00452.00167.000.410.730.83-5.636.174.73-4.826.986.56NANANA5376.67NDNDNDMW-31-85MW-31-85Confirmatory01384.8-9.211/18/200812:004410.00297.00161.00-0.240.540.812.133.794.762.843.825.19NANANA5376.67NDNDNDMW-31-85MW-31-85Q1-200901484.8-9.22/6/200911:227370.00654.00202.000.390.560.621.223.504.061.093.574.23NANANA5376.67NDNDNDMW-31-85MW-32-59Q2-200800358.818.35/5/200815:334150.00201.00182.000.080.520.97-0.711.893.051.252.013.77NANANA4865.50NDNDNDNAMW-32-59MW3259MidQ 0045881836/9/200812102850004810050600034036076122194298071243391 NA NA NA486550 ND ND NDMW3259MW-32-59Mid-Quarte r00458.818.36/9/200812:102850.00481.00506.00-0.340.360.76-1.221.942.98-0.712.433.91NANANA4865.50NDNDNDMW-32-59MW-32-59Q3-200800558.818.37/31/200813:231540.00163.00194.000.170.380.690.471.973.33-1.082.483.26NANANA4865.50NDNDNDMW-32-59MW-32-59Mid-Quarter00658.818.39/2/200813:522440.00459.00553.000.220.550.990.781.853.21NANANANANANA4865.50NDNDNDMW-32-59MW-32-59Q4-200800758.818.310/24/200813:59413.00200.00173.000.160.610.74-0.357.517.30-1.326.296.66NANANA4865.50NDNDNDMW-32-59MW-32-59Q1-200900858.818.32/4/200915:4617800.001030.50198.00-0.100.570.770.103.543.412.703.414.34NANANA4865.50NDNDNDMW-32-59MW-32-85Q2-200800685.385.35/5/200814:108360.00264.00181.00-0.070.390.761.952.163.96-0.362.063.27NANANA8358.33NDNDNDNAMW-32-85MW-32-85Mid-Quarter00785.385.36/9/200812:2511100.00821.00504.00-0.100.360.711.392.013.68-0.552.043.34NANANA8358.33NDNDNDMW-32-85MW-32-85Q3-200800885.385.37/31/200814:357480.00283.00193.000.120.340.620.212.063.501.071.883.43NANANA8358.33NDNDNDMW-32-85MW-32-85Mid-Quarter00985.385.39/2/200814:408050.00690.00552.000.140.420.77-1.372.453.52NANANANANANA8358.33NDNDNDMW-32-85MW-32-85Q4-200801085.385.310/24/200814:508620.00666.00172.000.110.460.571.395.786.623.085.897.32NANANA8358.33NDNDNDMW-32-85MW-32-85Q1-200901185.385.32/4/200915:496540.00637.50198.000.530.780.850.492.853.312.273.204.15NANANA8358.33NDNDNDMW-32-85MW-32-131Q2-2008006130.8-53.75/5/200812:351030.00136.00183.00-0.290.400.78-1.212.283.55-0.332.273.66NANANA1030.00NDNDNDNAMW 131MW-32-149Q2-2008006149.3-72.25/5/200810:54883.00131.00182.000.740.510.79-2.992.673.712.042.124.12NANANA545.75NDNDNDNAMW-32-149MW-32-149Q3-2008007149.3-72.27/31/200811:10532.00131.00194.000.010.350.681.061.652.871.421.562.81NANANA545.75NDNDNDMW-32-149MW-32-149Q4-2008008149.3-72.210/24/200810:28503.00210.00172.000.470.650.701.805.226.071.254.965.82NANANA545.75NDNDNDMW-32-149MW-32-149Q1-2009009149.3-72.22/4/200913:50265.00117.90117.000.450.680.730.542.993.380.332.913.28NANANA545.75NDNDNDMW-32-149MW-32-173Q2-2008003172.8-95.75/5/200810:331690.00152.00182.000.010.350.710.202.183.640.552.243.91NANANA1105.60NDNDNDNAMW-32-173MW-32-173Q3-2008004172.8-95.77/31/200810:521080.00148.00192.000.680.450.71-1.171.582.470.611.652.96NANANA1105.60NDNDNDMW-32-173MW-32-173Mid-Quarte r005172.8-95.79/2/200811:30972.00372.00548.000.190.460.84-1.022.673.88NANANANANANA1105.60NDNDNDMW-32-173MW-32-173Q4-2008006172.8-95.710/24/200810:251030.00267.00174.000.110.360.440.865.676.612.306.367.74NANANA1105.60NDNDNDMW-32-173MW-32-173Q1-2009007172.8-95.72/4/200913:40756.00145.20117.000.260.430.471.793.654.412.563.474.49NANANA1105.60NDNDNDMW-32-173MW-32-190Q2-2008006190.3-113.75/5/200810:576730.00241.00182.00-0.170.430.82-1.182.083.24-2.623.162.97NANANA4258.00NDNDNDNAMW-32-190MW-32-190Q3-2008007190.3-113.77/31/200811:244710.00235.00194.000.320.340.55-0.851.552.532.221.773.30NANANA4258.00NDNDNDMW-32-190MW-32-190Mid-Quarter008190.3-113.79/2/200811:403810.00520.00544.000.590.580.951.392.824.63NANANANANANA4258.00NDNDNDMW-32-190MW-32-190Q4-2008009190.3-113.710/24/200810:313350.00431.00173.000.000.580.740.595.335.983.855.687.16NANANA4258.00NDNDNDMW-32-190MW-32-190Q1-2009010190.3-113.72/4/200913:452690.00426.00198.000.240.560.650.042.672.950.473.023.44NANANA4258.00NDNDNDMW-32-190MW-33Q2-200802219.2-0.44/28/200815:0058500.001160.00258.000.170.300.520.111.873.12-0.052.123.49NANANA63250.00NDNDNDNAMW-33MW-33Mid-Quarter02319.2-0.49/4/200814:4168000.001820.00547.000.130.410.760.551.612.83NANANANANANA63250.00NDNDNDMW-33MW-35Q2-200801819-0.44/28/200813:381040.00177.00219.000.230.300.50-0.032.033.34-0.062.363.87NANANA1040.00NDNDNDNAMW-35MW-36-24 7Q3-200801116.1-4.37/24/200813:571020.00122.00163.000.340.380.620.402.093.61-0.552.373.85NANANA486.00NDNDNDNAMW-36-24J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 1 of 7See Page 7 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageSAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 (pCi/L)MW-36-24Q4-200801216.1-4.311/10/200815:33201.00150.00161.000.550.750.800.006.814.462.723.845.41NANANA486.00NDNDNDMW-36-24MW-36-24Q1-200901316.1-4.31/22/200912:48237.00115.80106.00-0.630.740.950.542.883.340.323.353.82NANANA486.00NDNDNDMW-36-24MW-36-52Q3-200801049.7-37.97/24/200816:0012600.00766.00374.005.670.740.47-0.482.243.690.032.113.53NANANA10130.005.77NDNDNAMW-36-52MW-36-52Q4-200801149.7-37.911/10/200816:5311000.00440.00163.008.271.240.39-0.393.864.211.364.675.65NANANA10130.005.77NDNDMW-36-52MW-36-52Q1-200901249.7-37.91/22/200912:596790.00603.00206.003.370.900.61-0.612.963.241.653.244.05NANANA10130.005.77NDNDMW-36-52MW-37-22Q3-200801117-27/24/200811:204330.00228.00195.0012.201.250.710.432.133.662.972.574.83NANANA4093.3313.00NDNDNAMW-37-22MW-37-22Q4-20080120011/10/200812:202680.00392.00174.0018.001.880.412.814.965.96-0.294.534.88NANANA4093.3313.00NDND MW-37-22Q1-2009013001/21/200914:275270.00535.50205.008.811.330.68-0.313.023.27-2.033.092.82NANANA4093.3313.00NDND MW-37-32Q3-200801129-147/24/200812:285160.00245.00195.0020.601.510.86-0.411.582.18-0.152.042.58NANANA3936.6716.77NDNDNAMW-37-32MW-37-32Q4-20080120011/10/200812:202890.00401.00171.0018.601.950.401.715.336.240.415.376.14NANANA3936.6716.77NDNDMW-37-32MW-37-32Q1-2009013001/21/200914:303760.00460.50204.0011.101.490.631.592.843.40-0.713.323.49NANANA3936.6716.77NDNDMW-37-32MW-37-40Q3-200801139.2-24.27/24/200813:125240.00243.00191.001.310.440.51-1.101.522.48-1.352.112.70NANANA5213.331.97NDNDNAMW 40MW-37-40Q4-200801239.2-24.211/10/200816:175490.00545.00176.001.130.530.380.366.036.835.047.429.22NANANA5213.331.97NDNDMW-37-40MW3740Q12009 0133922421/22/200913054910005130020000347089057264378327267314408 NA NA NA521333197 ND NDMW3740MW-37-40Q1-200901339.2-24.21/22/200913:054910.00513.00200.003.470.890.57-2.643.783.272.673.144.08NANANA5213.331.97NDNDMW-37-40MW-37-57Q3-200801153.2-38.27/24/200813:205330.00247.00194.0021.201.460.53-0.711.883.07-1.172.103.24NANANA4880.0021.70NDNDNAMW-37-57MW-37-57Q4-200801253.2-38.211/10/200811:044270.00477.00171.0024.002.290.64-0.166.086.800.987.188.14NANANA4880.0021.70NDNDMW-37-57MW-37-57Q1-200901353.2-38.21/21/200914:225040.00520.50202.0019.901.970.670.043.443.801.053.714.35NANANA4880.0021.70NDNDMW-37-57MW-39-67Q2-200800467135/1/200813:48318.00124.00196.002.210.620.68-0.301.582.530.361.803.11NANANA366.502.76NDNDNAMW-39-67MW-39-67Q4-2008005671310/23/200812:53415.00201.00199.003.311.120.77-1.285.465.95-0.125.386.06NANANA366.502.76NDNDMW-39-67MW-39-84Q2-200800483.5-3.55/1/200814:10150.00118.00196.002.230.710.89-0.212.243.67-0.212.243.67NANANA234.001.64NDNDNAMW-39-84MW-39-84Q4-200800583.5-3.510/23/200812:56234.00188.00199.001.040.690.591.745.886.931.126.988.05NANANA234.001.64NDNDMW-39-84MW-39-102Q2-2008004101.5-21.54/30/200814:56503.00169.00244.000.880.540.80-1.022.634.000.491.903.34-10.7014.0024.80503.001.06NDNDNDMW-39-102MW-39-102Q4-2008005101.5-21.510/22/200813:56168.00183.00200.001.230.720.590.666.186.75-1.905.475.53NANANA503.001.06NDNDMW-39-102MW-39-124Q2-2008004124-444/30/200815:24215.0095.00153.001.790.660.89-1.232.133.400.592.193.89-11.3014.2025.20223.001.37NDNDNDMW-39-124MW-39-124Q4-2008005124-4410/22/200814:00231.00188.00200.000.940.650.561.036.647.611.636.988.11NANANA223.001.37NDNDMW-39-124MW-39-183Q2-2008004182.5-102.54/30/200815:03112.00106.00177.001.120.570.780.152.454.140.802.604.481.8314.6025.00ND1.12NDNDNDMW-39-183MW-39-183Q4-2008005182.5-102.510/22/200814:0753.90173.00197.000.350.730.84-4.166.887.09-3.087.777.39NANANAND1.12NDNDMW-39-183MW-39-195Q2-2008004195-1154/30/200816:10274.00150.00236.001.210.550.83-1.172.283.710.022.484.21-2.5914.5025.10274.001.05NDNDNDMW-39-195MW-39-195Q4-2008005195-11510/22/200814:26172.00183.00200.000.880.720.694.145.576.901.816.767.96NANANA274.001.05NDNDMW-39-195MW-40-27Q3-200800426.746.58/11/200813:19222.00106.00172.000.370.420.710.612.284.00-0.372.563.83-7.5711.5020.50222.00NDNDNDNDMW-40-27MW-40-27Q4-200800526.746.510/28/200814:58142.00180.00195.000.480.580.61-1.555.736.22-1.466.867.416.2816.4018.50222.00NDNDNDMW-40-27MW-40-27Q1-200900626.746.51/19/200914:29120.00134.25148.000.480.640.680.633.413.861.462.903.58-1.8618.0020.90222.00NDNDNDMW-40-27MW-40-46Q3-200800546.2278/11/200813:35168.00104.00171.00-0.330.380.810.131.993.311.092.053.644.0411.7020.10NDNDNDNDNDMW-40-46 MW-40-46Q4-200800646.22710/28/200815:3088.00174.00198.000.650.700.720.286.587.491.836.307.480.9317.1019.60NDNDNDNDMW-40-46MW-40-46Q1-200900746.2271/19/200914:2877.60132.60148.000.270.500.570.812.883.39-1.192.782.88-5.6318.9022.20NDNDNDNDMW-40-46MW-40-81Q3-200800580.7-7.58/11/20089:43242.00106.00171.000.170.370.65-0.081.692.780.261.923.25-2.9611.0019.20201.50NDNDNDNDMW-40-81MW-40-81Q4-200800680.7-7.510/28/200811:2030.40161.00193.00-0.180.420.632.045.286.24-0.876.757.32-2.3823.3026.90201.50NDNDNDMW-40-81MW-40-81Q1-200900780.7-7.51/19/200910:38161.00136.50148.000.290.580.65-0.473.624.01-1.413.773.92-7.5517.7020.90201.50NDNDNDMW-40-81MW-40-100Q2-2008006100.2-275/30/200812:45116.0098.40160.000.120.560.98-0.742.123.48-0.872.003.15NANANA193.00NDNDNDNDMW-40-100MW-40-100Q3-2008007100.2-278/11/200810:10193.00105.00171.00-0.030.290.58-0.121.592.680.641.522.700.0010.9018.90193.00NDNDNDMW-40-100MW-40-100Q4-2008008100.2-2710/28/200811:3086.60173.00195.000.110.640.78-1.256.507.113.927.028.63-0.7717.9020.60193.00NDNDNDMW-40-100MW-40-100Q1-2009009100.2-271/19/200911:5242.40130.35148.000.110.600.730.615.973.850.133.153.61-9.8018.9022.40193.00NDNDNDMW-40-100MW-40-127Q2-2008006127.2-545/30/200813:0032.7091.60163.00-0.480.530.970.692.233.431.362.003.62NANANANDNDNDNDNDMW-40-127 MW-40-127Q3-2008007127.2-548/11/200810:34168.00104.00170.000.170.240.420.121.652.810.011.492.51-8.7711.3020.10NDNDNDNDMW-40-127MW-40-127Q4-2008008127.2-5410/28/200812:1075.30170.00195.000.440.710.79-2.536.466.88-4.338.237.680.0016.6019.30NDNDNDNDMW-40-127MW-40-127Q1-2009009127.2-541/19/200911:2592.20133.05148.00-0.080.720.90-1.203.753.941.683.664.45-3.3418.4521.60NDNDNDNDMW-40-127MW-40-162Q3-2008005161.7-88.58/11/200811:44230.00108.00175.000.080.420.780.632.434.163.152.074.11-5.2712.2021.60230.00NDNDNDNDMW-40-162MW-40-162Q4-2008006161.7-88.510/28/200813:15112.00177.00196.000.280.640.74-2.005.846.262.116.087.293.7517.9020.40230.00NDNDNDMW-40-162MW-40-162Q1-2009007161.7-88.51/19/200911:47107.00133.35148.000.130.520.62-0.403.323.670.422.963.41-9.1718.4522.00230.00NDNDNDMW-40-162MW-41-40Q4-200801134.420.510/22/200814:492210.00726.00592.005.911.100.423.076.337.66-3.608.648.40NANANA2210.005.91NDNDNAMW-41-4 0MW-41-63Q4-200801059.5-4.610/22/200812:34691.00573.00592.005.691.130.442.605.596.710.906.087.02NANANA691.005.69NDNDNAMW-41-63MW-42-49Q2-200801042.627.15/13/200813:203240.00256.00144.0023.601.540.5514100.00789.0014.7016.904.474.67734.0028.5021.904100.00205.0526750.0016.90489.33MW-42-49MW-42-49Q3-200801142.627.18/4/200814:243160.00265.00191.0035.601.720.5610600.00613.0012.00-0.012.694.52313.0026.0026.10MW-42-49MW-42-49Mid-Quarter01242.627.19/5/200812:5213200.00836.00508.00296.004.980.4022100.001380.0015.80NANANA462.0021.7020.30MW-42-49MW-42-49Q4-200801342.627.110/31/200813:272600.00377.00163.0096.104.340.4217800.001580.0018.300.596.967.78271.0027.3019.90MW-42-49MW-42-49Mid-Quarter01442.627.111/17/200814:561120.00201.00173.00102.006.961.2815400.001160.0017.403.265.216.76244.0030.0022.50MW-42-49MW-42-49Q1-200901542.627.11/26/200916:161280.00303.00206.00677.0011.250.7480500.008010.0026.600.005.245.56912.0045.0019.00MW-42-49MW-42-78Q3-200800974-4.38/4/200812:07618.00150.00191.000.390.260.382.712.023.75-0.642.103.29-0.7615.2026.80515.000.39NDNDNDMW-42-78MW-42-78Q4-200801074-4.310/31/200813:34562.00212.00165.000.040.300.390.335.686.340.836.727.683.6917.7020.20515.000.39NDMW-42-78MW-42-78Q1-200901174-4.31/30/200911:22365.00217.50200.000.440.650.700.673.323.88-0.193.573.99NANANA515.000.39NDMW-42-78MW-43-28Q4-200801023.525.310/31/200814:17265.00158.00166.00-0.110.400.574.075.196.44-1.166.216.63NANANA265.00NDNDNDNAMW-43-28J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 2 of 7See Page 7 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageSAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 (pCi/L)MW-43-62Q4-200801051-2.210/31/200813:16225.00156.00166.000.200.410.470.006.456.962.596.307.60NANANA225.00NDNDNDNAMW-43-62MW-44-66Q2-200800862.431.14/30/200815:38161.00119.00196.000.040.410.79-0.092.063.380.912.444.27NANANA358.00NDNDNDNAMW-44-66MW-44-66Q3-200800962.431.17/25/200812:18550.00255.00375.000.310.370.62-2.332.533.03-0.211.742.85NANANA358.00NDNDMW-44-66MW-44-66Q4-200801062.431.110/23/200813:17318.00161.00166.000.320.380.39-3.205.215.30-1.595.736.02NANANA358.00NDNDMW-44-66MW-44-66Q1-200901162.431.12/3/20099:40206.00192.00197.000.450.800.901.963.534.183.093.064.12NANANA358.00NDNDMW-44-66MW-44-102Q2-20080098013.54/30/200815:28256.00122.00196.000.080.370.711.032.033.63-2.073.044.52NANANA356.25NDNDNDNAMW-44-102MW-44-102Q3-20080108013.57/25/200812:18437.00246.00375.00-0.030.180.32-0.411.782.881.351.873.41NANANA356.25NDNDMW-44-102MW-44-102Q4-20080118013.510/23/200813:48475.00168.00165.000.200.470.541.726.247.282.398.128.47NANANA356.25NDNDMW-44-102MW-44-102Q1-20090128013.52/2/200912:06257.00193.50193.000.470.610.670.983.394.02-0.973.533.74NANANA356.25NDNDMW-44-102MW-45-42Q2-20080123716.65/1/200815:151130.00151.00196.00-0.040.310.630.671.993.47-1.173.624.55NANANA2000.00NDNDNDNAMW-45-42MW-45-42Q3-20080133716.67/25/200816:402320.00377.00374.000.300.280.44-1.771.762.531.091.763.19NANANA2000.00NDNDMW-45-42MW-45-42Q4-20080143716.610/22/200814:553140.00803.00591.000.460.520.53-1.645.075.26-3.004.934.36NANANA2000.00NDNDMW-45-42MW-45-42Q1-20090153716.62/2/200918:021410.00327.00197.00-0.180.440.66-1.412.572.67-1.272.552.57NANANA2000.00NDNDMW-45-42MW4561Q22008 012 58 445/1/200810162210001800019500069050077032207359129225353 NA NA NA166000 ND ND ND NAMW4561MW-45-61Q2-200801258-4.45/1/200810:162210.00180.00195.000.690.500.770.322.073.59-1.292.253.53NANANA1660.00NDNDNDNAMW-45-61MW-45-61Q3-200801358-4.47/25/200813:511800.00346.00376.000.240.250.41-1.881.912.800.781.913.40NANANA1660.00NDNDMW-45-61MW-45-61Q4-200801458-4.410/22/20089:331270.00635.00590.000.200.580.69-1.525.075.321.045.736.58NANANA1660.00NDNDMW-45-61MW-45-61Q1-200901558-4.42/2/200913:131360.00324.00199.00-0.150.760.950.993.594.200.233.233.66NANANA1660.00NDNDMW-45-61MW-46Q2-200801210.57.64/29/200816:00521.00153.00220.000.410.350.560.792.123.750.462.243.90NANANA918.000.93NDNDNAMW-46MW-46Q3-200801310.57.67/24/200816:56771.00275.00377.000.270.310.510.611.963.38-1.892.103.09NANANA918.000.93NDMW-46MW-46Q4-200801410.57.610/20/200815:271380.00644.00589.000.930.590.51-2.275.885.91-0.595.636.09NANANA918.000.93NDMW-46MW-46Q1-200901510.57.62/5/200913:461000.00288.00196.00-0.130.620.78-1.682.782.710.702.823.28NANANA918.000.93NDMW-46MW-49-26Q2-200801219.1-4.44/25/200812:455000.00313.00144.0018.101.320.572.682.364.342.082.224.141.7611.9020.503882.5015.85NDNDNDMW-49-26MW-49-26Q3-200801319.1-4.47/30/200815:033960.00173.00130.0016.201.270.84-0.981.742.741.312.173.93-2.8116.4029.203882.5015.85ND MW-49-26Q4-200801419.1-4.411/5/200815:543470.00455.00191.0015.302.060.61-1.365.035.26-0.324.655.182.9617.7020.203882.5015.85ND MW-49-26Q1-200901519.1-4.42/6/200913:033100.00265.50169.0013.801.910.861.774.344.541.263.564.2423.1022.0524.203882.5015.85ND 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Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 3 of 7See Page 7 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageSAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 (pCi/L)MW-51-189Q1-2009008189.2-121.51/20/200911:3333.20129.90148.00-0.210.350.56-2.053.483.621.913.324.20-8.3317.8521.10NDNDNDMW-51-189MW-52-11Q2-2008003106.84/28/200813:231130.00153.00196.000.200.470.850.521.933.36-2.153.524.08NANANA1130.00NDNDNDNAMW-52-11MW-52-122Q2-2008003122-107.14/28/200815:2388.7086.00144.000.120.290.52-1.252.053.242.722.384.52NANANANDNDNDNDNAMW-52-122MW-52-162Q2-2008003161.5-146.64/28/200810:22145.0087.30143.001.030.360.44-0.912.033.312.332.134.14NANANA145.001.03NDNDNAMW-52-1 62MW-52-181Q2-2008003181-166.14/29/200810:24156.0087.70144.000.160.250.431.082.253.960.412.123.63NANANA156.00NDNDNDNAMW-52-181MW-53-82Q3-200800875-4.78/4/200812:251210.00184.00191.000.700.300.392.792.264.160.032.143.5811.5012.4020.902088.001.50NDNDNDMW-53-82MW-53-82Q4-200800975-4.710/30/200815:52794.00237.00165.00-0.050.300.423.666.217.56-1.786.336.63-4.8316.5019.202088.001.50NDMW-53-82MW-53-82Q1-200901075-4.71/26/200912:004260.00306.00192.002.301.070.981.103.964.51-0.233.593.888.0416.3518.402088.001.50NDMW-53-82MW-53-120Q2-2008008109.8-39.55/13/200810:105910.00338.00143.0031.101.730.67-1.391.983.101.332.153.9922.2012.8020.805523.3331.10NDND22.70MW-53-120MW-53-120Q3-2008009109.8-39.58/4/200810:155800.00346.00191.0030.301.520.31-0.971.933.02-0.122.333.2026.5013.0021.105458.5730.04ND22.70MW-53-120MW-53-120Mid-Quarter010109.8-39.59/5/200810:555760.00590.00507.0031.001.590.41-0.332.413.94NANANA19.4011.900.395458.5730.04ND22.70MW-53-120MW-53-120Q4-2008011109.8-39.510/30/200813:005570.00539.00166.0025.302.040.382.734.755.740.009.139.265.8216.9019.305458.5730.04ND22.70MW-53-120MW-53-120Mid-Quarter012109.8-39.511/17/200810:315040.00323.00172.0042.503.630.670.334.725.28-0.024.094.4921.2020.3022.105458.5730.04ND22.70MW-53-120MW53120Q12009 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Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 4 of 7See Page 7 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageSAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 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10Q3-200800793-80.77/29/200814:17238.00125.00192.000.000.220.39-0.402.013.36-0.321.963.23NANANA317.50NDNDMW-63-93MW-63-93Q4-200800893-80.711/5/200810:14390.00375.00386.00-0.100.190.241.535.105.922.806.247.60NANANA317.50NDNDMW-63-93MW-63-93Q1-200900993-80.71/29/200914:20340.00208.50193.000.120.630.78-0.943.173.42-0.823.633.88NANANA317.50NDNDMW-63-93J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 5 of 7See Page 7 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageSAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 (pCi/L)MW-63-112Q2-2008005111.5-99.24/23/200811:08372.00168.00265.00-0.040.400.790.482.303.891.752.784.52-0.5014.3024.80322.75NDNDNDNDMW-63-112MW-63-112Q3-2008006111.5-99.27/29/200814:20207.00101.00163.000.710.540.870.662.233.891.072.464.41NANANA322.75NDNDMW-63-112MW-63-112Q4-2008007111.5-99.211/4/200812:41275.00192.00201.000.470.590.620.195.686.43-2.758.347.58NANANA322.75NDNDMW-63-112MW-63-112Q1-2009008111.5-99.21/30/200914:39437.00220.50197.000.020.780.92-1.102.812.861.773.414.13NANANA322.75NDNDMW-63-112MW-63-121Q2-2008005121-108.74/23/200811:17454.00134.00198.000.540.490.80-0.360.941.55-1.332.711.81-3.2214.1024.60479.000.75NDNDNDMW-63-121MW-63-121 11Q3-2008006121-108.77/29/200814:30344.00104.00161.000.760.380.570.292.083.571.232.304.11NANANA479.000.75NDMW-63-121MW-63-121Q4-2008007121-108.711/4/200812:43495.00206.00198.000.380.750.86-0.805.425.971.206.387.41NANANA479.000.75NDMW-63-121MW-63-121Q1-2009008121-108.71/30/200914:41623.00241.50197.000.730.510.451.913.183.920.912.843.45NANANA479.000.75NDMW-63-121MW-63-163Q2-2008005162.5-150.24/23/200811:23444.00170.00265.000.180.430.790.801.061.840.661.131.945.3015.2026.00539.50NDNDNDNDMW-63-163MW-63-163 10Q3-2008006162.5-150.27/29/200814:56448.00107.00163.00-0.090.250.44-2.092.343.610.902.594.48NANANA539.50NDNDMW-63-163MW-63-163Q4-2008007162.5-150.211/4/200812:45685.00186.00176.00-0.140.550.750.185.376.120.786.217.23NANANA539.50NDNDMW-63-163MW-63-163Q1-2009008162.5-150.21/29/200911:57581.00240.00195.000.290.560.645.827.233.42-0.172.813.03NANANA539.50NDNDMW-63-163MW-63-174Q2-2008005174-161.74/23/200811:21489.00172.00265.00-0.070.370.75-0.572.013.300.372.434.19-2.1414.4025.00476.75NDNDNDNDMW-63-174 10Q32008 006 17416177/29/20081440449001400019200007028048038223371172265379 NA NA NA47675 ND NDMW63174MW-63-174 10Q3-2008006174-161.77/29/200814:40449.00140.00192.000.070.280.48-0.382.233.71-1.722.653.79NANANA476.75NDNDMW-63-174MW-63-174Q4-2008007174-161.711/4/200812:44477.00204.00199.00-0.280.550.78-2.684.834.741.185.456.30NANANA476.75NDNDMW-63-174MW-63-174Q1-2009008174-161.71/29/200911:55492.00228.00197.000.430.600.66-0.453.813.67-1.343.293.32NANANA476.75NDNDMW-63-174MW-66-21Q2-200800414.104/21/200814:10953.00151.00193.001.010.210.280.652.364.070.022.263.74-7.288.8815.50682.750.98NDNDNDMW 21MW-66-21Q3-200800514.107/29/200811:48783.00102.00130.000.910.360.44-1.011.882.921.712.173.99-6.2616.6029.90632.000.988.99MW-66-21Q4-200800614.1011/4/200810:30534.00207.00164.001.030.700.671.444.675.422.985.176.47-5.6817.9020.90632.000.988.99MW-66-21Q1-200900714.101/27/200913:52461.00174.00175.000.290.750.87 8.99 145.453.11-1.872.902.7112.9017.4019.30632.000.988.99MW-66-36Q2-200800433.6-19.54/21/200813:256090.00289.00197.0013.200.530.37-0.292.093.46-2.093.544.13-0.348.9815.405047.5012.80NDNDNDMW-66-36MW-66-36Q3-200800533.6-19.57/29/200812:055010.00191.00130.0012.001.060.620.211.662.82-1.051.933.00-1.0016.9029.805047.5012.80NDMW-66-36Q4-200800633.6-19.511/4/200810:405440.00534.00167.0013.801.710.520.694.324.901.785.246.230.9616.4018.805047.5012.80NDMW-66-36Q1-200900733.6-19.51/27/200913:073650.00762.00441.0012.201.560.62-1.042.883.060.063.273.7214.5016.9518.705047.5012.80NDMW-67-39 8Q3-200800538.3-25.87/28/200814:073870.00172.00130.0013.701.110.40-1.032.603.420.452.153.686.3416.7028.803573.3314.70NDNDNDMW-67-39MW-67-39Q4-200800738.3-25.812/18/200811:303180.00266.00171.0016.201.691.001.184.615.400.735.045.810.8416.8019.403573.3314.70NDMW-67-39MW-67-39Q1-200900838.3-25.81/27/200916:153670.00291.00192.0014.201.710.76-0.802.042.15-0.112.062.2511.2016.8018.703573.3314.70NDMW-67-39MW-67-105Q3-2008005104.8-92.37/28/200814:252160.00140.00137.000.960.350.420.421.592.780.771.512.787.2516.5028.502350.001.04NDNDNDMW-67-105MW-67-105Q4-2008006104.8-92.311/3/200814:212930.00402.00166.001.110.560.46-0.256.367.110.086.877.596.3216.8019.002350.001.04NDMW-67-105MW-67-105Q1-2009007104.8-92.31/27/200916:451960.00241.50192.000.410.830.95-1.133.322.71-0.032.392.6612.1016.3518.102350.001.04NDMW-67-105MW-67-173Q3-2008005172.3-159.87/28/200814:42912.00109.00136.000.110.270.49-1.222.063.19-0.362.143.495.8816.4028.40887.33NDNDNDNDMW-67-173MW-67-173Q4-2008006172.3-159.811/3/200814:37993.00258.00166.00-0.030.260.30-1.416.696.321.496.667.65-1.4016.9019.70833.75ND13.40MW-67-173MW-67-173Q1-2009007172.3-159.81/27/200916:33757.00199.50192.000.440.590.63 13.4 144.852.53-1.242.582.7314.8017.8519.60833.75ND13.40MW-67-173MW-67-219Q3-2008005218.8-206.37/28/200811:001170.00116.00136.00-0.070.230.49-0.291.983.33-0.261.923.185.9916.8029.001169.33NDNDNDNDMW-67-219MW-67-219Q4-2008006218.8-206.311/3/200811:311370.00293.00168.000.090.170.191.324.935.864.006.308.052.3016.5018.801169.33NDNDMW-67-219MW-67-219Q1-2009007218.8-206.31/27/200912:34968.00280.50250.00-0.080.530.71-0.361.892.100.081.832.0911.4021.6024.301169.33NDNDMW-67-219MW-67-276Q3-2008005275.3-262.87/28/200811:091160.00116.00136.00-0.050.280.55-0.891.983.180.591.973.457.5516.2027.701146.67NDNDNDNDMW-67-276MW-67-276Q4-2008006275.3-262.811/3/200811:391180.00275.00166.00-0.050.180.220.385.636.29-0.746.006.507.2917.3019.501146.67NDNDMW-67-276MW-67-276Q1-2009007275.3-262.81/27/200913:011100.00511.50439.000.330.590.670.243.243.70-1.193.743.9611.5016.8018.701146.67NDNDMW-67-276MW-67-323Q3-2008005322.3-309.87/28/200811:25338.0090.80136.00-0.240.370.730.832.303.990.222.043.46-5.9815.9028.60462.33NDNDNDNDMW-67-323MW-67-323Q4-2008006322.3-309.811/3/200811:44684.00224.00164.000.040.340.44-3.565.215.180.435.125.87-7.3815.9018.70462.33NDNDMW-67-323MW-67-323Q1-2009007322.3-309.81/27/200913:50365.00169.50176.00-0.120.410.590.473.864.420.353.383.869.8413.2314.70462.33NDNDMW-67-323MW-67-340Q3-2008005339.8-327.37/28/200811:18511.0093.60130.00-0.340.230.550.312.213.810.902.253.68-6.9415.7027.80567.67NDNDNDNDMW-67-340MW-67-340Q4-2008006339.8-327.311/3/200811:54669.00222.00163.000.080.430.542.236.257.453.656.768.47-8.3415.9018.80567.67NDNDMW-67-340MW-67-340Q1-2009007339.8-327.31/27/200912:44523.00436.50439.000.260.550.630.473.724.19-0.403.413.677.7816.8019.00567.67NDNDMW-67-340MW-107Q2-200800632.7110.14/24/200815:41191.0089.00144.00-0.060.220.44-2.032.784.11-1.382.123.07NANANA191.00NDNDNDNAMW-107MW-107Mid-Quarter00732.7110.15/30/200815:2546.2090.20158.000.070.550.961.221.883.360.552.203.57NANANA191.00NDNDMW-111Q4-200802716.52.49/4/200814:0073900.001890.00547.001.020.360.42-0.822.2236.10NANANANANANA70150.001.02NDNDNAMW-111MW-111Mid-Quarter02816.52.410/21/200814:2066400.002000.00260.000.910.930.97-0.943.603.790.514.325.03NANANA70150.001.02NDU3-4DQ2-200801625.6-10.84/29/200813:27319.00143.00222.000.140.280.490.521.913.36-0.151.732.91NANANA458.75NDNDNDNAU3-4DU3-4DQ3-200801725.6-10.87/28/200816:46466.00250.00379.00-0.360.500.980.292.083.620.482.363.69NANANA458.75NDNDU3-4DU3-4DQ4-200801825.6-10.810/20/200814:40568.00171.00164.00-0.090.861.110.354.625.170.714.134.79NANANA458.75NDNDU3-4DU3-4DMid-Quarter01025.6-10.811/4/200812:00118.00423.00476.00NANANA3.179.516.903.3410.007.54NANANA458.75NANDU3-4DU3-4DConfirmatory01125.6-10.811/10/200812:00316.00414.00461.00NANANA4.1012.308.954.0712.209.41NANANA458.75NANDU3-4DU3-4DQ1-200901925.6-10.82/10/200914:15482.00231.00197.000.100.520.640.392.663.000.753.023.39NANANA458.75NDNDU3-4DU3-T1Q2-20080205.72.85/2/200815:24709.00163.00222.000.720.520.830.291.843.19-1.151.872.82NANANA634.750.87NDNDNAU3-T1U3-T1Q3-20080215.72.87/23/200811:16556.00258.00379.000.640.520.842.412.244.180.652.444.01NANANA634.750.87NDU3-T1U3-T1Q4-20080225.72.810/20/200810:19599.00563.00591.000.700.550.522.516.277.461.516.247.35NANANA634.750.87NDU3-T1U3-T1Q1-20090235.72.81/28/200912:00675.00247.50204.001.040.750.74-1.533.592.95-0.662.302.48NANANA634.750.87NDU3-T1U3-T2Q2-20080255.72.65/2/200814:441020.00177.00222.000.650.330.470.582.063.530.791.633.00NANANA1013.750.65NDNDNAU3-T2U3-T2Q3-20080265.72.67/23/200813:40997.00285.00364.000.590.520.840.041.722.93-1.022.443.39NANANA1013.750.65NDU3-T2J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 6 of 7See Page 7 for Notes TABLE 3FIRST QUARTER 2009 GROUNDWATER ANALYTICAL RESULTS AND AVERAGESINDIAN POINT ENERGY CENTERBUCHANAN, NYTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)DateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCAverageAverageAverageAverageA verageSAMPLE COLLECTIONWell ID 1SAMPLING QUARTER 2SAMPLE IDSAMPLE ZONE CENTER, De pth Ft Below Top of Casing 3SAMPLE ZONE CENTER, Elevation Ft msl 3YEARLY ROLLING AVERAGES 4TRITIUM (pCi/L)ANALYSIS RESULTSCo-60 (pCi/L)Cs-137 (pCi/L)Sr-90 (pCi/L)Well IDNi-63 (pCi/L)U3-T2Q4-20080275.72.610/20/200810:36928.00597.00590.000.470.500.49-0.474.825.31-5.026.546.06NANANA1013.750.65NDU3-T2U3-T2Q1-20090285.72.61/28/200911:401110.00286.50204.000.600.640.680.712.422.740.412.302.61NANANA1013.750.65NDU3-T2LAF-002Q2-2008009-22.34/10/20080:0046.5084.60144.000.470.300.461.912.143.951.612.464.56NANANAND0.47NDNDNDLAF-002LAF-002Q4-2008010-22.310/17/200810:3281.90155.00174.000.410.790.900.242.763.16-0.033.093.46-4.6120.1023.50ND0.47NDLAF-002 B-1 9Q2-20080054/18/200818:251170.00157.00201.00-0.110.380.7820.003.703.07-0.251.762.97NANANA1170.00ND20.00NDNAB-1 B-6 9Q2-20080054/25/200814:1552.3084.50143.00-0.120.260.53-0.291.963.24-0.753.434.21NANANANDNDNDNDNAB-6U1-CSSQ2-2008006146.14/23/200815:251770.00196.00144.006.740.900.72-1.362.123.20-0.762.083.16NANANA1753.607.35NDNDNDU1-CSSU1-CSSMid-Quarter007146.15/12/200814:05688.00135.00142.004.830.840.932.592.304.250.312.583.96-2.1811.9020.801723.008.48NDU1-CSSU1-CSSMid-Quarter008146.19/8/200810:241450.00377.00498.009.380.940.541.902.073.76NANANANANANA1723.008.48NDU1-CSSU1-CSSQ4-2008009146.111/6/200814:482660.00386.00166.006.741.200.533.526.017.29-1.946.456.6710.2016.5018.501723.008.48NDU1-CSSU1-CSSMid-Quarter010146.111/19/200813:502200.00233.00162.009.081.380.582.354.044.980.864.635.37NANANA1723.008.48NDU1-CSSU1-NCDQ2-20080015/8/20089:459500.00349.00196.00397.002.580.36NANANANANANANANANA5940.00432.0028400.00ND641.00U1-NCDU1-NCDQ4-200800210/15/200812:356190.00371.00161.00435.005.890.33NANANANANANANANANAU1NCDQ12009 0031/12/20091345213000247501920046400890066284000026250012200772372806410041101890U1-NCDQ1-20090031/12/200913:452130.00247.50192.00464.008.900.6628400.002625.0012.200.772.372.80641.0041.1018.90U1-SFDSQ2-20080014/9/20088:55628.00141.00197.009.980.490.43NANANANANANANANANA727.5013.706.39NDNDU1-SFDSU1-SFDSMid-Quarter0025/8/20089:10881.00150.00196.0014.000.520.37NANANANANANANANANA U1-SFDSQ4-200800310/15/200812:451090.00179.00167.0018.501.260.46NANANANANANANANANA U1-SFDSQ1-20090041/14/20099:15311.00181.50193.0012.201.670.826.393.472.221.031.912.277.2616.2018.30Notes:1. For nested multi-level monitoring wells, suffix of well ID indicates depth (rounded to nearest foot) from reference point on casing to bottom of well screen. For Waterloo multi-level systems, suffix indicates depth (rounded to nearest foot) from reference point on casing to top of sampling port. Well IDs without a suffix are open bedrock wellbores.2. All analytical results from the last 12 months from each location are provided. Monitoring locations are sampled quarterly, bi-annually, or annually, and as necessary during the year. 3. Sampling depths within sampling intervals (i.e. location of pump intake) have been located adjacent to a transmissive zone where possible.4. Averages provided are analytical result averages of all valid samples (including mid-quarter and confirmatory samples) collected from each monitoring location from the second quarter of 2008 (Q2-2008) to the first quarter of 2009 (Q1-2009) including post Q1-2009 samples. Monitoring locations are sampled quarterly, bi-annually, or annually and additional samples are collected when necessary. Therefore, some results provided are the average of more than 4 samples. For quarters in which samples were reanalyzed due to potential false positives, both results were used to calculate averages if subsequent results confirmed the validity of the original sample/analysis. For cases in which reanalysis discredited the validity of the original sample result, the replacement results were used to calculate the average. If analytical results resulted in resampling, and the resample result discredited the validity of the original sample result of a particular radionuclide, the original sample results were not used for any radionuclides and only the resample result was used. For cases in which an aliquot of the original sample was reanalyzed, if the result of the aliquot confirmed the original result, then the aliquot result and the original result were averaged and the average of the two was used to calculate the rolling average. If the aliquot result indicated the original result was false, then only the aliquot result was used to calculate the rolling average. 5. NA indicates that the constituent was not analyzed.6. ND indicates that all of the analytical results used to calculate the average were less than MDC and/or 3 times the 1 sigma uncertainty.7. Dot pattern denotes sampling interval is positioned within overburden. Open box indicates sampling interval is in bedrock.8. Due to unexpectedly high levels of Co-60 detected in the original set of the 4th Quarter 2008 samples collected from MW-67-39, a second set of samples were collected and analyzed. Quality control review of the original analysis showed no evidence of error in laboratory analysis or field collection procedures and reanalysis of the original sample confirmed the Co-60 detections. However, historical data and data for the second set of samples showed results below MDC and below three times the 1 sigma uncertainty (not positive) for Co-60 at this interval, suggesting that the first set of results do not appropriately characterize activity at this interval. In addition, results from the NRC split sample of this interval were not positive. Thus, results for the first set of MW67-39 samples during Quarter 4 were not used to calculate yearly averages.9. These locations are storm drains.10. Aliquots from the samples from MW-63-93, MW-63-163 and MW-63-174 were re-analyzed to investigate unexpectedly high Sr-90 results. The re-analyzed samples had results below MDC and below three times the 1 sigma uncertainty (not positive) for Sr-90 at these intervals, suggesting that the first set of results do not appropriately characterize activity at these intervals. Thus, results from the original samples were not used to calculate yearly averages.11. The sample from MW-63-121 was reanalyzed due to unexpected Sr-90 results. The re-analyzed samples confirmed the original results, therefore the average of the original and reanalysis results was used to calculate the rolling averages. 12. Confirmatory samples were collected and analyzed to evaluate the results of the preceding sample.

13. Mid-quarter samples were collected and analyzed to evaluate the potential effect of certain operations on groundwater quality. 14. Due to unexpectedly high levels of Cs-137 detected in the original set of the First Quarter 2009 samples collected from MW-66-21 and MW-67-173, a second set of confirmatory samples were collected and analyzed. The re-analyzed samples had results below MDC and below three times the 1 sigma uncertainty (not positive) for Cs-137 at these intervals, suggesting that the first set of results do not appropriately characterize activity at these intervals. Thus, cesium results from the original samples were not used to calculate yearly averages.J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table3_Q1_2009_updatedOct19.xlsx; MakeTable3Page 7 of 7See Page 7 for Notes TABLE 42009 1ST QUARTER GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERTY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCI.L.

3ResultStd. Dev.MDCI.L.ResultStd. Dev.MDCI.L.ResultStd. Dev.MDCI.L.ResultStd. Dev.MDCI.L.MW-30-690231/30/200911:001.07E+052.51E+031.98E+022.64E+05-8.74E-027.58E-019.73E-012.00E+00-1.13E+002.61E+002.66E+00positive1.06E+002.70E+003.24E+00positiveNANANApositiveMW-30-69MW-30-840141/30/200911:214.69E+035.48E+021.99E+028.57E+039.38E-025.97E-017.19E-012.00E+008.97E+004.34E+003.02E+00positive-8.43E-023.39E+003.81E+00positiveNANANApositiveMW-30-84MW-31-490142/6/200911:051.11E+047.86E+021.99E+021.55E+041.18E-013.00E-013.57E-012.00E+00-1.67E-012.97E+003.35E+00positive-4.61E-012.85E+003.14E+00positiveNANANApositiveMW-31-49MW-31-630142/6/200911:531.28E+048.39E+021.97E+023.69E+046.43E-016.42E-016.82E-012.00E+00-1.32E+003.42E+003.63E+00positive-7.48E-013.86E+004.17E+00positiveNANANApositiveMW-31-63MW-31-850142/6/200911:227.37E+036.54E+022.02E+028.73E+033.89E-015.58E-016.16E-012.00E+001.22E+003.50E+004.06E+00positive1.09E+003.57E+004.23E+00positiveNANANApositiveMW-31-85MW-32-590082/4/200915:461.78E+041.03E+031.98E+021.00E+04-1.01E-015.73E-017.69E-012.00E+001.01E-013.54E+003.41E+00positive2.70E+003.41E+004.34E+00positiveNANANApositiveMW-32-59MW-32-850112/4/200915:496.54E+036.38E+021.98E+021.81E+045.26E-017.76E-018.50E-012.00E+004.88E-012.85E+003.31E+00positive2.27E+003.20E+004.15E+00positiveNANANApositiveMW-32-85MW-32-1490092/4/200913:502.65E+021.18E+021.17E+021.53E+034.53E-016.75E-017.34E-012.00E+005.44E-012.99E+003.38E+00positive3.32E-012.91E+003.28E+00positiveNANANApositiveMW-32-149MW-32-1730072/4/200913:407.56E+021.45E+021.17E+023.27E+032.57E-014.26E-014.74E-012.00E+001.79E+003.65E+004.41E+00positive2.56E+003.47E+004.49E+00positiveNANANApositiveMW-32-173MW-32-1900102/4/200913:452.69E+034.26E+021.98E+021.10E+042.44E-015.57E-016.47E-012.00E+003.60E-022.67E+002.95E+00positive4.71E-013.02E+003.44E+00positiveNANANApositiveMW-32-190MW-36-24 50131/22/200912:482.37E+021.16E+021.06E+022.25E+03-6.26E-017.37E-019.48E-012.00E+005.41E-012.88E+003.34E+00positive3.15E-013.35E+003.82E+00positiveNANANApositiveMW-36-24MW-36-520121/22/200912:596.79E+036.03E+022.06E+022.33E+043.37E+008.99E-016.07E-011.25E+01-6.07E-012.96E+003.24E+00positive1.65E+003.24E+004.05E+00positiveNANANApositiveMW-36-52MW-37-220131/21/200914:275.27E+035.36E+022.05E+029.02E+038.81E+001.33E+006.79E-012.60E+01-3.12E-013.02E+003.27E+00positive-2.03E+003.09E+002.82E+00positiveNANANApositiveMW-37-22MW-37-320131/21/200914:303.76E+034.61E+022.04E+029.87E+031.11E+011.49E+006.27E-013.63E+011.59E+002.84E+003.40E+00positive-7.12E-013.32E+003.49E+00positiveNANANApositiveMW-37-32MW3740 0131/22/20091305491E03513E02200E02116E04347E00885E01569E01226E00264E00378E00327E00 ii267E00314E00408E00 ii NA NA NA iiMW3740Well ID 1SAMPLE IDSAMPLE COLLECTIONANALYSIS RESULTSWell IDTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)MW-37-400131/22/200913:054.91E+035.13E+022.00E+021.16E+043.47E+008.85E-015.69E-012.26E+00-2.64E+003.78E+003.27E+00 positive2.67E+003.14E+004.08E+00 positiveN A N A N A positiveMW-37-40MW-37-570131/21/200914:225.04E+035.21E+022.02E+021.08E+041.99E+011.97E+006.68E-014.94E+013.77E-023.44E+003.80E+00positive1.05E+003.71E+004.35E+00positiveNANANApositiveMW-37-57MW-40-270061/19/200914:291.20E+021.34E+021.48E+021.00E+034.82E-016.36E-016.82E-012.00E+006.25E-013.41E+003.86E+00positive1.46E+002.90E+003.58E+00positive-1.86E+001.80E+012.09E+01positiveMW-40-27MW-40-460071/19/200914:287.76E+011.33E+021.48E+021.00E+032.69E-015.01E-015.67E-012.00E+008.08E-012.88E+003.39E+00positive-1.19E+002.78E+002.88E+00positive-5.63E+001.89E+012.22E+01positiveMW-40-46MW-40-810071/19/200910:381.61E+021.37E+021.48E+021.00E+032.92E-015.76E-016.54E-012.00E+00-4.67E-013.62E+004.01E+00positive-1.41E+003.77E+003.92E+00positive-7.55E+001.77E+012.09E+01positiveMW-40-81MW-40-1000091/19/200911:524.24E+011.30E+021.48E+021.00E+031.06E-016.03E-017.25E-012.00E+006.13E-015.97E+003.85E+00positive1.26E-013.15E+003.61E+00positive-9.80E+001.89E+012.24E+01positiveMW-40-100MW-40-1270091/19/200911:259.22E+011.33E+021.48E+021.00E+03-7.90E-027.19E-019.00E-012.00E+00-1.20E+003.75E+003.94E+00positive1.68E+003.66E+004.45E+00positive-3.34E+001.85E+012.16E+01positiveMW-40-127MW-40-1620071/19/200911:471.07E+021.33E+021.48E+021.00E+031.32E-015.16E-016.16E-012.00E+00-3.98E-013.32E+003.67E+00positive4.22E-012.96E+003.41E+00positive-9.17E+001.85E+012.20E+01positiveMW-40-162MW-42-490151/26/200916:161.28E+033.03E+022.06E+028.21E+036.77E+021.13E+017.44E-011.96E+028.05E+048.01E+032.66E+013.79E+040.00E+005.24E+005.56E+003.38E+019.12E+024.50E+011.90E+018.42E+02MW-42-49MW-42-780111/30/200911:223.65E+022.18E+022.00E+021.02E+034.40E-016.45E-017.03E-012.00E+006.70E-013.32E+003.88E+002.16E+02-1.89E-013.57E+003.99E+00positiveNANANApositiveMW-42-78MW-44-660112/3/20099:402.06E+021.92E+021.97E+021.00E+034.52E-017.98E-018.95E-012.00E+001.96E+003.53E+004.18E+00positive3.09E+003.06E+004.12E+00positiveNANANApositiveMW-44-66MW-44-1020122/2/200912:062.57E+021.94E+021.93E+021.00E+034.66E-016.12E-016.71E-012.00E+009.83E-013.39E+004.02E+00positive-9.65E-013.53E+003.74E+00positiveNANANApositiveMW-44-102MW-45-420152/2/200918:021.41E+033.27E+021.97E+024.02E+03-1.78E-014.41E-016.64E-012.00E+00-1.41E+002.57E+002.67E+00positive-1.27E+002.55E+002.57E+00positiveNANANApositiveMW-45-42MW-45-610152/2/200913:131.36E+033.24E+021.99E+023.97E+03-1.47E-017.61E-019.47E-012.00E+009.93E-013.59E+004.20E+00positive2.30E-013.23E+003.66E+00positiveNANANApositiveMW-45-61MW-460152/5/200913:461.00E+032.88E+021.96E+021.61E+03-1.30E-016.23E-017.82E-012.00E+00-1.68E+002.78E+002.71E+00positive7.02E-012.82E+003.28E+00positiveNANANApositiveMW-46MW-49-260152/6/200913:033.10E+032.66E+021.69E+028.32E+031.38E+011.91E+008.59E-013.63E+011.77E+004.34E+004.54E+00positive1.26E+003.56E+004.24E+00positive2.31E+012.21E+012.42E+01positiveMW-49-26MW-49-420152/6/20099:572.25E+032.40E+021.70E+025.54E+032.07E+012.37E+009.73E-014.80E+011.38E+003.51E+004.09E+00positive-2.43E+003.38E+003.11E+00positive-2.15E+002.15E+012.48E+01positiveMW-49-42MW-49-650152/6/20099:591.42E+032.10E+021.70E+023.30E+031.73E+012.10E+009.15E-014.07E+01-9.15E-012.96E+003.20E+00positive7.61E-012.64E+003.21E+00positive2.70E+002.22E+012.54E+01positiveMW-49-65MW-50-420161/22/200915:232.15E+021.38E+021.48E+021.00E+031.96E+008.06E-016.31E-019.49E+00-1.74E+002.48E+002.37E+00positive-5.18E-012.31E+002.39E+00positive-3.34E+001.74E+012.03E+01positiveMW-50-42MW-50-66 0201/22/200916:01230E+03216E+02148E+02550E+03275E+01228E+00407E-01723E+01-168E+00420E+00399E+00positive-197E-01332E+00366E+00positive-933E+00188E+01223E+01positiveMW-50-66 MW-50-66 0201/22/200916:01 2.30E+03 2.16E+02 1.48E+02 5.50E+03 2.75E+01 2.28E+00 4.07E-01 7.23E+01-1.68E+00 4.20E+00 3.99E+00positive-1.97E-01 3.32E+00 3.66E+00positive-9.33E+00 1.88E+01 2.23E+01positive MW-50-66MW-51-400101/20/200914:502.37E+011.68E+021.92E+021.00E+031.92E-017.95E-019.70E-012.00E+009.89E-012.81E+003.26E+00positive1.05E+002.75E+003.30E+00positive8.95E+001.67E+011.87E+01positiveMW-51-40MW-51-790101/20/200915:211.01E+021.33E+021.48E+021.00E+03-1.71E-013.15E-015.02E-012.00E+005.93E-015.57E+003.65E+00positive-2.94E-013.21E+003.56E+00positive1.58E+011.73E+011.90E+01positiveMW-51-79MW-51-1040081/20/200910:469.95E+011.33E+021.48E+021.00E+039.07E-033.78E-015.04E-012.00E+00-1.33E+002.87E+003.03E+00positive-1.01E+002.37E+002.42E+00positive-2.06E+002.00E+012.33E+01positiveMW-51-104MW-51-1350081/20/200911:021.31E+021.35E+021.48E+021.00E+03-3.04E-013.41E-015.84E-012.00E+00-6.92E-013.89E+004.31E+00positive9.34E-013.06E+003.66E+00positive-1.08E+011.76E+012.10E+01positiveMW-51-135MW-51-1630081/20/200911:444.60E+011.30E+021.48E+021.00E+03-1.98E-014.97E-016.98E-012.00E+00-9.70E-013.14E+003.27E+00positive-7.70E-023.24E+003.54E+00positive-1.01E+011.80E+012.14E+01positiveMW-51-163MW-51-1890081/20/200911:333.32E+011.30E+021.48E+021.00E+03-2.14E-013.45E-015.59E-012.00E+00-2.05E+003.48E+003.62E+00positive1.91E+003.32E+004.20E+00positive-8.33E+001.79E+012.11E+01positiveMW-51-189MW-53-820101/26/200912:004.26E+033.06E+021.92E+021.96E+032.30E+001.07E+009.76E-012.00E+001.10E+003.96E+004.51E+00positive-2.25E-013.59E+003.88E+00positive8.04E+001.64E+011.84E+01positiveMW-53-82MW-53-1200131/26/200912:435.06E+033.26E+021.92E+021.19E+042.64E+012.37E+007.50E-016.38E+01-3.60E-014.53E+005.10E+00positive2.32E+004.34E+005.39E+00positive1.27E+012.22E+012.49E+014.54E+01MW-53-120MW-54-370082/3/200915:341.16E+031.86E+021.64E+022.07E+035.93E+001.16E+006.66E-011.22E+011.70E+003.33E+003.92E+00positive-1.15E+003.24E+003.14E+00positive-3.14E+002.16E+012.50E+01positiveMW-54-37MW-54-580082/3/200914:536.82E+021.71E+021.66E+021.33E+031.98E+008.52E-017.24E-017.37E+009.58E-012.78E+003.29E+00positive4.22E-012.94E+003.39E+00positive-3.05E+001.95E+012.27E+01positiveMW-54-58MW-54-1230082/3/200911:555.31E+021.64E+021.64E+021.21E+035.91E+001.15E+005.70E-011.76E+019.03E-013.03E+003.59E+00positive5.33E-023.09E+003.52E+00positive9.09E-012.00E+012.30E+01positiveMW-54-123MW-54-1440082/3/200912:411.13E+032.03E+021.77E+022.41E+031.44E+011.76E+006.51E-013.42E+01-5.38E-033.15E+003.46E+00positive-2.00E-022.91E+003.20E+00positive2.21E+002.37E+012.76E+01positiveMW-54-144MW-54-1730082/3/200912:191.98E+035.45E+023.85E+023.83E+031.02E+011.45E+005.93E-012.77E+01-1.52E+003.03E+003.08E+00positive-2.37E+003.20E+002.94E+00positive4.01E+002.37E+012.76E+01positiveMW-54-173MW-54-1900082/3/200912:351.43E+034.88E+023.80E+023.39E+031.90E+011.85E+003.85E-014.70E+01-1.18E+003.48E+003.74E+00positive7.39E-013.08E+003.70E+00positive-5.10E+002.37E+012.84E+01positiveMW-54-190MW-55-240092/11/200912:551.04E+034.49E+023.84E+022.19E+031.69E+011.74E+003.85E-014.06E+011.90E+002.88E+003.50E+00positive1.35E+003.14E+003.76E+00positive-1.21E+012.45E+012.99E+01positiveMW-55-24MW-55-350082/4/200913:468.53E+024.28E+023.84E+023.77E+031.71E+011.82E+004.39E-015.75E+011.01E+003.14E+003.69E+00positive1.58E-012.78E+003.15E+00positive8.49E-012.30E+012.69E+01positiveMW-55-35MW-55-540092/4/200912:427.33E+039.09E+023.82E+021.38E+042.11E+012.01E+003.69E-014.61E+01-3.34E-013.11E+003.46E+00positive-3.64E-013.35E+003.69E+00positive5.24E+002.34E+012.70E+01positiveMW-55-54MW-58-260072/3/200912:495.19E+022.36E+021.98E+021.00E+03-8.35E-035.27E-016.83E-012.00E+001.40E+002.76E+003.29E+00positive1.45E-013.09E+003.31E+00positiveNANANApositiveMW-58-26MW-58-650072/3/200912:052.75E+022.03E+021.98E+021.00E+036.60E-018.00E-018.56E-012.00E+00-8.45E-013.21E+003.41E+00 positive1.91E+003.09E+003.89E+00 positiveN A N A N A positiveMW-58-65MW5865 0072/3/200912:052.75E022.03E021.98E021.00E036.60E018.00E018.56E012.00E008.45E013.21E003.41E00positive1.91E003.09E003.89E00positive NA NA NApositiveMW5865MW-60-350082/9/200916:122.00E+021.83E+021.98E+022.00E+033.81E-018.27E-019.42E-012.00E+00-1.20E+003.09E+003.19E+00positive-3.23E-013.00E+003.22E+00positive-3.26E+002.39E+012.82E+01positiveMW-60-35MW-60-530082/9/200911:281.31E+021.79E+021.98E+022.00E+034.81E-018.09E-019.06E-012.00E+00-1.28E+003.80E+003.55E+00positive5.34E-012.78E+003.22E+00positive-1.24E+002.43E+012.85E+01positiveMW-60-53MW-60-720082/9/200911:251.67E+021.55E+021.69E+022.00E+03-4.16E-017.19E-019.60E-012.00E+00-6.54E-013.00E+003.30E+00positive7.83E-013.09E+003.69E+00positive-9.25E+002.24E+012.66E+01positiveMW-60-72MW-60-1350082/9/200912:043.83E+021.67E+021.69E+022.00E+035.52E-015.96E-016.39E-012.00E+001.42E+002.96E+003.48E+00positive4.24E-013.05E+003.35E+00positive3.74E+002.27E+012.58E+01positiveMW-60-135MW-60-1540082/9/200912:234.15E+021.65E+021.67E+022.00E+034.63E-017.98E-018.96E-012.00E+007.14E-013.02E+003.45E+00positive1.01E+003.54E+004.13E+00positive-3.74E+002.09E+012.42E+01positiveMW-60-154MW-60-1760082/9/200913:089.16E+021.91E+021.70E+022.00E+034.25E-016.80E-017.58E-012.00E+00-2.42E-013.27E+003.56E+00positive5.10E-013.29E+003.74E+00positive-1.22E+012.06E+012.44E+01positiveMW-60-176MW-62-180081/23/200911:554.64E+021.39E+021.07E+022.00E+031.09E+006.47E-016.00E-012.00E+009.88E-012.55E+003.06E+00positive-3.42E-012.48E+002.74E+00positiveNANANApositiveMW-62-18MW-62-370081/23/200912:204.87E+021.42E+021.08E+022.00E+031.28E-017.41E-019.02E-012.00E+00-7.69E-013.12E+003.43E+00positive-6.49E-013.14E+003.36E+00positiveNANANApositiveMW-62-37MW-62-530071/23/200912:443.56E+022.16E+022.08E+022.00E+034.53E-017.68E-018.60E-012.00E+002.27E-013.30E+003.77E+00positive-1.27E+003.56E+003.71E+00positiveNANANApositiveMW-62-53MW-62-710081/23/200912:122.99E+022.07E+022.04E+022.00E+032.47E-017.35E-018.56E-012.00E+001.92E+003.53E+004.25E+00positive-4.84E-013.87E+004.22E+00positiveNANANApositiveMW-62-71J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table4_updatedOct19.xlsx; MakeTable4Page 1 of 2See Page 2 for Notes TABLE 42009 1ST QUARTER GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERTY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCI.L.

3ResultStd. Dev.MDCI.L.ResultStd. Dev.MDCI.L.ResultStd. Dev.MDCI.L.ResultStd. Dev.MDCI.L.Well ID 1SAMPLE IDSAMPLE COLLECTIONANALYSIS RESULTSWell IDTRITIUM (pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)MW-62-920081/23/200912:285.25E+022.33E+022.05E+022.00E+03-1.59E-016.86E-018.73E-012.00E+002.90E-014.58E+004.83E+00positive1.88E+003.83E+004.74E+00positiveNANANApositiveMW-62-92MW-62-1380081/23/200912:506.26E+022.43E+022.04E+022.00E+032.46E+008.27E-016.23E-012.00E+00-4.23E-012.40E+002.67E+00positive5.99E-012.24E+002.64E+00positiveNANANApositiveMW-62-138MW-62-1820081/23/200913:494.98E+022.28E+022.03E+022.00E+03-1.85E-014.56E-016.98E-012.00E+00-1.91E+002.55E+002.68E+00positive-1.03E+002.43E+002.55E+00positiveNANANApositiveMW-62-182MW-63-180081/29/200913:461.54E+021.85E+021.98E+022.00E+03-2.22E-016.74E-018.57E-012.00E+009.78E-022.64E+003.01E+00positive1.02E+003.20E+003.87E+00positiveNANANApositiveMW-63-18MW-63-340081/29/200912:224.20E+022.22E+021.96E+022.00E+032.20E-016.87E-018.13E-012.00E+001.41E+002.91E+003.45E+00positive-2.64E-012.96E+003.23E+00positiveNANANApositiveMW-63-34MW-63-500081/29/200914:062.98E+022.04E+021.96E+022.00E+035.67E-018.00E-018.76E-012.00E+008.89E-023.09E+003.51E+00positive1.37E+003.41E+004.19E+00positiveNANANApositiveMW-63-50MW-63-930091/29/200914:203.40E+022.09E+021.93E+022.00E+031.18E-016.33E-017.75E-012.00E+00-9.44E-013.17E+003.42E+00positive-8.17E-013.63E+003.88E+00positiveNANANApositiveMW-63-93MW-63-1120081/30/200914:394.37E+022.21E+021.97E+022.00E+032.43E-027.80E-019.24E-012.00E+00-1.10E+002.81E+002.86E+00positive1.77E+003.41E+004.13E+00positiveNANANApositiveMW-63-112MW-63-1210081/30/200914:416.23E+022.42E+021.97E+022.00E+037.30E-015.09E-014.47E-012.00E+001.91E+003.18E+003.92E+00positive9.14E-012.84E+003.45E+00positiveNANANApositiveMW-63-121MW-63-1630081/29/200911:575.81E+022.40E+021.95E+022.00E+032.86E-015.64E-016.42E-012.00E+005.82E+007.23E+003.42E+00positive-1.73E-012.81E+003.03E+00positiveNANANApositiveMW-63-163MW-63-1740081/29/200911:554.92E+022.28E+021.97E+022.00E+034.27E-015.96E-016.57E-012.00E+00-4.53E-013.81E+003.67E+00positive-1.34E+003.29E+003.32E+00positiveNANANApositiveMW-63-174MW-66-21 70071/27/200913:524.61E+021.74E+021.75E+021.54E+032.91E-017.50E-018.72E-012.02E+008.99E+005.45E+003.11E+00positive-1.87E+002.90E+002.71E+00positive1.29E+011.74E+011.93E+01positiveMW-66-21MW-66-360071/27/200913:073.65E+037.62E+024.41E+021.19E+041.22E+011.56E+006.15E-012.71E+01-1.04E+002.88E+003.06E+00positive6.35E-023.27E+003.72E+00positive1.45E+011.70E+011.87E+01positiveMW-66-36MW-67-390081/27/200916:153.67E+032.91E+021.92E+027.48E+031.42E+011.71E+007.62E-013.36E+01-8.03E-012.04E+002.15E+00positive-1.11E-012.06E+002.25E+00positive1.12E+011.68E+011.87E+01positiveMW-67-39MW-67-1050071/27/200916:451.96E+032.42E+021.92E+024.95E+034.08E-018.30E-019.49E-012.14E+00-1.13E+003.32E+002.71E+00 positive-3.40E-022.39E+002.66E+00 positive1.21E+011.64E+011.81E+01 positiveMW-67-105MW-67-173 70071/27/200916:337.57E+022.00E+021.92E+021.90E+034.35E-015.94E-016.32E-012.00E+001.34E+014.85E+002.53E+00positive-1.24E+002.58E+002.73E+00positive1.48E+011.79E+011.96E+01positiveMW-67-173MW-67-2190071/27/200912:349.68E+022.81E+022.50E+022.51E+03-7.56E-025.30E-017.13E-012.00E+00-3.58E-011.89E+002.10E+00positive7.86E-021.83E+002.09E+00positive1.14E+012.16E+012.43E+01positiveMW-67-219MW-67-2760071/27/200913:011.10E+035.12E+024.39E+022.27E+033.32E-015.93E-016.66E-012.00E+002.35E-013.24E+003.70E+00positive-1.19E+003.74E+003.96E+00positive1.15E+011.68E+011.87E+01positiveMW-67-276MW-67-3230071/27/200913:503.65E+021.70E+021.76E+021.00E+03-1.15E-014.05E-015.85E-012.00E+004.74E-013.86E+004.42E+00positive3.47E-013.38E+003.86E+00positive9.84E+001.32E+011.47E+01positiveMW-67-323MW-67-3400071/27/200912:445.23E+024.37E+024.39E+021.11E+032.57E-015.48E-016.31E-012.00E+004.72E-013.72E+004.19E+00positive-4.00E-013.41E+003.67E+00positive7.78E+001.68E+011.90E+01positiveMW-67-340U3-4D0192/10/200914:154.82E+022.31E+021.97E+021.00E+031.00E-015.16E-016.41E-012.00E+003.86E-012.66E+003.00E+00positive7.53E-013.02E+003.39E+00positiveNANANApositiveU3-4DU3-T10231/28/200912:006.75E+022.48E+022.04E+021.28E+031.04E+007.47E-017.44E-012.00E+00-1.53E+003.59E+002.95E+00positive-6.63E-012.30E+002.48E+00positiveNANANApositiveU3-T1U3-T20281/28/200911:401.11E+032.87E+022.04E+022.14E+036.04E-016.41E-016.75E-012.00E+007.10E-012.42E+002.74E+00positive4.09E-012.30E+002.61E+00positiveNANANApositiveU3-T2U1-NCD0031/12/200913:452.13E+032.48E+021.92E+021.00E+034.64E+028.90E+006.61E-012.00E+002.84E+042.63E+031.22E+01positive7.66E-012.37E+002.80E+00positive6.41E+024.11E+011.89E+01positiveU1-NCDU1-SFDS0041/14/20099:153.11E+021.82E+021.93E+021.00E+031.22E+011.67E+008.15E-012.00E+006.39E+003.47E+002.22E+00positive1.03E+001.91E+002.27E+00positive7.26E+001.62E+011.83E+01positiveU1-SFDS Notes:1. For nested multi-level monitoring wells, suffix of well ID indicates depth (rounded to nearest foot) from reference point on casing to bottom of well screen. For Waterloo multi-level systems, suffix indicates depth (rounded to nearest foot) from reference point on casing to top of sampling port. Well IDs without a suffix are open bedrock wellbores.

2. Sampling depths within sampling intervals (location of pump intake) have been established at location of most transmissive zone to the extent possible.3. I.L.s (Investigation Levels) are predetermined detection limits assigned to each sampling location which, if reached or exceeded, require further investigation or action. I.L.s presented here are established for 2009 based on 2008 averages. Positive detections indicate that the the result is greater than MDC and greater than or equal to 3 times the 1 sigma uncertainty.
4. NA indicates that the constituent was not analyzed.5DotpatterndenotessamplingintervalispositionedwithinoverburdensoilsOpenboxindicatessamplingintervalisinbedrock
5. Dot pattern denotes sampling interval is positioned within overburden soils. Open box indicates sampling interval is in bedrock.6. Shading indicates that the sample result exceeds the Investigation Level.
7. Due to unexpectedly high levels of Cs-137 detected in the original set of the First Quarter 2009 samples collected from MW-66-21 and MW-67-173, a second set of samples were collected and analyzed. The re-analyzed samples had results below MDC and below three times the 1 sigma uncertainty (not positive) for Cs-137 at these intervals, suggesting that the first set of results do not appropriately characterize activity at these intervals. J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table4_updatedOct19.xlsx; MakeTable4Page 2 of 2See Page 2 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCMW-30-6900169.36.41/30/200615:402.37E+052.76E+046.26E+02 NA 3NANANANANANANANANANANAMW-30-6900369.36.46/23/200610:503.92E+053.35E+046.02E+033.34E-028.24E-011.09E+002.96E+011.40E+011.14E+014.23E+009.93E+001.14E+011.02E+011.27E+011.36E+0100469.36.48/18/200614:452.20E+054.20E+031.10E+038.14E-011.40E+001.52E+00-7.33E+001.40E+011.41E+013.91E+001.51E+011.78E+01NANANA 00569.36.411/29/200610:451.06E+051.86E+035.30E+022.50E+008.40E-018.10E-013.13E+033.30E+015.00E+001.20E+002.28E+002.50E+001.15E+011.26E+011.40E+0100669.36.41/16/200714:058.17E+048.73E+036.34E+02-1.60E-011.47E+001.60E+000.00E+002.10E+002.40E+00-4.30E-012.07E+002.50E+007.07E+001.94E+012.20E+0100769.36.46/12/200710:202.97E+058.73E+036.34E+02-2.63E-014.19E-016.45E-013.93E-013.75E+004.09E+006.88E-024.08E+003.94E+00NANANA 00869.36.47/18/20079:558.21E+042.46E+037.00E+02NANANANANANANANANANANANA 01069.36.48/1/200711:441.03E+053.09E+036.40E+02NANANANANANANANANANANANA 01169.36.48/8/200710:009.96E+042.99E+036.32E+02NANANANANANANANANANANANA 01269.36.48/15/200711:002.33E+056.99E+036.33E+02NANANANANANANANANANANANA 01369.36.48/21/20079:451.07E+053.21E+037.05E+02NANANANANANANANANANANANA 01469.36.48/30/200711:329.80E+042.94E+037.03E+02NANANANANANANANANANANANA 01569.36.49/19/200711:009.20E+042.76E+037.02E+02NANANANANANANANANANANANA 01669.36.410/23/200711:481.32E+053.90E+034.24E+022.52E-016.16E-017.12E-012.42E+005.76E+004.45E+00-5.09E-013.66E+003.86E+00NANAN A 017693 64 2/4/200813:00187E+05551E+03395E+02157E01698E01857E01126E+00305E+00356E+00600E01363E+00328E+00 NA NA NAWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION 017 69.3 6.4 2/4/2008 13: 00 1.87E+05 5.51E+03 3.95E+02 1.57E-01 6.98E-01 8.57E-01 1.26E+00 3.05E+00 3.56E+00-6.00E-01 3.63E+00 3.28E+00 NA NA NA01869.36.45/6/200811:001.53E+053.01E+034.06E+023.34E-013.98E-016.71E-014.94E-011.83E+003.21E+00-5.70E-011.71E+002.73E+00NANANA01969.36.46/6/200811:017.36E+042.02E+035.06E+022.02E-013.20E-015.59E-01-9.82E-012.10E+003.27E+004.91E-012.24E+003.85E+00NANANA 02069.36.48/5/200811:221.99E+053.92E+034.95E+022.09E-013.07E-015.34E-01-1.57E-011.42E+002.38E+001.11E+001.28E+002.33E+00NANANA 02169.36.49/3/200811:298.53E+042.03E+035.50E+02-3.12E-015.12E-019.72E-01-1.89E+002.22E+003.36E+00NANANANANANA 02269.36.411/7/200810:279.55E+042.85E+033.06E+024.09E-015.53E-016.01E-017.83E-013.09E+003.66E+00-1.07E-012.65E+002.85E+00NANANA 02369.36.41/30/200911:001.07E+052.51E+031.98E+02-8.74E-027.58E-019.73E-01-1.13E+002.61E+002.66E+001.06E+002.70E+003.24E+00NANAN AMW-30-8400183.8-8.18/22/200613:151.25E+042.43E+031.61E+03-1.60E-019.82E-011.13E+001.88E+001.09E+011.24E+01-2.52E+001.00E+011.03E+01NANANAMW-30-8400283.8-8.111/29/200614:301.01E+041.59E+031.10E+03-9.40E-017.80E-018.70E-012.94E+021.68E+015.00E+00-3.00E-013.90E+004.80E+004.10E+001.17E+011.30E+0100383.8-8.11/17/20079:457.33E+037.50E+025.30E+024.80E-011.50E+001.60E+001.18E+002.61E+002.90E+000.00E+002.91E+003.40E+00 00483.8-8.16/12/200710:197.79E+039.47E+024.42E+02-1.49E-014.44E-016.41E-01-1.06E+002.29E+002.41E+00-6.93E-012.38E+002.54E+00-3.57E+001.74E+012.03E+0100583.8-8.17/18/200710:254.80E+037.20E+027.00E+02NANANANANANANANANANANANA 00683.8-8.17/25/200713:005.02E+034.49E+022.43E+021.56E-013.09E-013.48E-012.83E+003.38E+002.84E+002.03E+002.91E+003.57E+00NANANA 00783.8-8.110/23/200712:494.27E+037.38E+024.03E+025.95E-015.53E-015.59E-011.56E+002.81E+003.38E+00-1.17E+003.72E+003.27E+00NANA NA00883.8-8.12/4/200814:164.34E+032.61E+021.32E+02-4.08E-014.55E-017.47E-01-1.00E+002.55E+002.73E+00-4.32E-012.97E+002.79E+00NANA NA00983.8-8.15/6/200813:404.18E+032.83E+022.20E+023.26E-013.86E-016.51E-014.43E-012.37E+004.00E+00-1.91E+002.53E+003.69E+00NANANA 01083.8-8.16/6/200812:103.85E+035.33E+025.04E+021.54E-012.46E-014.34E-01-8.97E-012.16E+003.57E+002.05E+002.31E+004.29E+00NANANA 02083.8-8.18/5/200814:404.31E+032.28E+021.94E+022.77E-012.86E-014.67E-01-1.87E-011.44E+002.35E+00-1.04E-012.12E+002.66E+00NANAN A02183.8-8.19/3/200811:593.78E+035.13E+025.35E+02-4.62E-024.61E-019.06E-01-3.02E-011.73E+002.89E+02NANANANANANA 01383.8-8.111/7/200810:505.25E+033.23E+021.64E+021.07E-025.75E-017.61E-016.64E-014.63E+005.37E+002.13E+005.34E+006.53E+00NANANA 01483.8-8.11/30/200911:214.69E+035.48E+021.99E+029.38E-025.97E-017.19E-018.97E+004.34E+003.02E+00-8.43E-023.39E+003.81E+00NANAN A MW-31-49 001488268 11/27/200611:45298E+02174E+02170E+02000E+00129E+00140E+00 NA NA NA130E+00360E+00400E+00142E+02165E+02180E+02 MW-31-49 MW-31-49 001 48.8 26.8 11/27/200611:45 2.98E+02 1.74E+02 1.70E+02 0.00E+00 1.29E+00 1.40E+00 NA NA NA 1.30E+00 3.60E+00 4.00E+00 1.42E+02 1.65E+02 1.80E+02 MW-31-4900248.826.81/18/20079:131.20E+035.70E+025.30E+023.00E-011.62E+001.80E+00NANANA-2.10E+008.10E+009.50E+00NANANA00348.826.86/12/200714:241.48E+035.24E+024.37E+02-1.51E-015.49E-017.52E-011.83E-012.12E+002.35E+001.26E-012.01E+002.26E+000.00E+001.11E+011.29E+0100448.826.88/2/200710:231.19E+041.27E+035.43E+02-5.17E-017.89E-019.55E-018.83E+011.35E+013.31E+001.80E-013.63E+004.11E+00NANANA 00548.826.89/11/200713:106.98E+033.27E+021.59E+02-2.26E-014.23E-016.01E-01-1.20E+003.04E+003.24E+000.00E+004.96E+004.75E+00NANA NA00648.826.810/24/200715:508.77E+039.99E+024.00E+025.14E-024.26E-015.36E-01-6.76E-013.94E+003.57E+001.35E+003.21E+003.52E+00NANA NA00748.826.81/16/200810:313.97E+021.94E+021.77E+02-9.14E-026.86E-018.97E-01-1.17E+004.74E+005.07E+00-9.76E-014.41E+004.65E+00NANANA00948.826.86/6/200815:053.04E+041.34E+034.69E+022.83E-013.39E-015.72E-011.11E+001.93E+003.47E+001.72E+002.01E+003.82E+00NANANA 01048.826.88/7/200812:435.94E+021.33E+021.92E+022.39E-012.67E-014.43E-017.07E-011.30E+002.23E+007.08E-011.49E+002.56E+00NANANA 01148.826.88/30/200811:551.36E+048.61E+025.53E+024.16E-014.80E-018.06E-011.27E+003.63E+003.09E+00NANANANANANA 01248.826.810/30/200811:306.43E+022.25E+021.71E+027.64E-021.71E-011.93E-011.39E+006.27E+007.25E+00-9.09E-016.40E+006.88E+00NANA NA01348.826.811/18/200811:157.77E+021.79E+021.62E+024.11E-016.30E-016.97E-011.21E+004.18E+005.03E+009.78E-014.93E+005.84E+00NANAN A01448.826.82/6/200911:051.11E+047.86E+021.99E+021.18E-013.00E-013.57E-01-1.67E-012.97E+003.35E+00-4.61E-012.85E+003.14E+00NANAN AMW-31-6300163.312.311/27/200612:106.89E+031.44E+031.10E+035.30E-011.26E+001.40E+001.99E+029.60E+003.60E+006.80E-012.94E+003.40E+004.10E+011.17E+021.30E+02MW-31-6300263.312.31/18/20079:251.41E+049.00E+025.20E+02-6.50E-011.50E+001.70E+00-4.00E-013.00E+003.50E+00-4.50E-012.91E+003.50E+00NANA NA00363.312.36/12/200714:205.00E+037.85E+024.38E+024.72E-016.36E-016.78E-01-5.01E-011.92E+002.09E+00-8.78E-021.97E+002.20E+003.37E+001.89E+012.17E+0100463.312.38/2/200711:154.06E+042.27E+035.53E+02-1.41E-017.84E-019.53E-011.20E+003.56E+004.18E+00-3.09E-024.41E+004.23E+00NANAN A00563.312.39/11/200713:253.77E+041.13E+032.20E+02-1.37E-014.52E-016.15E-01-4.39E-013.51E+003.80E+00-8.64E-013.92E+003.44E+00NANANA00663.312.310/24/200714:553.58E+041.94E+034.00E+02-1.63E-014.58E-016.34E-011.07E+005.31E+004.01E+001.01E+003.40E+004.11E+00NANA NA00763.312.31/16/200811:321.24E+047.35E+021.80E+02-6.88E-025.34E-017.44E-01-2.49E-014.04E+004.40E+00-9.08E-014.19E+004.32E+00NANANA00963.312.36/6/200816:161.02E+047.92E+025.04E+021.44E-013.40E-016.17E-01-1.15E+002.11E+003.36E+002.47E+002.31E+004.45E+00NANANA 01063.312.3 8/7/200811:221.76E+044.17E+021.94E+02-2.12E-012.61E-015.89E-01-1.86E-011.28E+002.16E+003.73E-011.43E+002.49E+00 NA NA NA 010 63.3 12.3 8/7/200811:22 1.76E+04 4.17E+02 1.94E+02-2.12E-01 2.61E-01 5.89E-01-1.86E-01 1.28E+00 2.16E+00 3.73E-01 1.43E+00 2.49E+00 NA NA NA01163.312.38/30/200812:342.21E+041.07E+035.49E+02-6.34E-014.35E-019.79E-013.76E-012.35E+004.04E+00NANANANANANA 01263.312.310/30/200812:142.30E+041.08E+031.73E+022.28E-012.33E-012.52E-012.21E+006.18E+007.37E+00-1.47E+007.26E+007.77E+00NANA NA01363.312.311/18/200811:582.55E+048.07E+021.84E+023.95E-017.40E-018.36E-011.02E-025.89E+006.01E+00-5.18E-016.54E+006.97E+00NANA NA01463.312.32/6/200911:531.28E+048.39E+021.97E+026.43E-016.42E-016.82E-01-1.32E+003.42E+003.63E+00-7.48E-013.86E+004.17E+00NANAN AMW-31-8500184.8-9.211/27/200612:204.62E+021.74E+021.70E+021.50E-011.44E+001.60E+001.52E+028.40E+003.20E+002.10E-012.19E+002.50E+002.20E+019.30E+011.00E+02MW-31-8500284.8-9.21/18/20079:162.66E+036.00E+025.20E+02-5.90E-011.59E+001.80E+00-4.90E+008.70E+001.00E+01-6.00E-018.70E+001.00E+018.35E+002.11E+012.39E+0100384.8-9.26/12/200714:053.17E+021.62E+021.69E+02-3.83E-016.62E-019.31E-013.95E-012.76E+001.91E+00-5.71E-011.69E+001.83E+00NANA NA00484.8-9.28/2/200710:582.69E+037.11E+025.31E+02-7.29E-016.31E-019.31E-01-5.01E-023.29E+003.59E+00-1.90E+003.35E+003.31E+00NANA NA00584.8-9.29/11/200713:204.32E+033.32E+021.82E+026.86E-017.48E-017.93E-01-7.04E-013.04E+003.26E+00-3.07E+003.68E+003.24E+00NANA NA00684.8-9.210/24/200714:405.51E+038.15E+023.98E+022.53E-014.08E-014.51E-015.68E-012.90E+003.38E+004.76E-012.75E+003.19E+00NANAN A00784.8-9.21/16/200811:261.31E+032.81E+021.84E+026.97E-017.67E-017.79E-012.68E+004.05E+004.83E+001.90E+003.80E+004.62E+00NANANA 00984.8-9.26/6/200815:265.95E+036.30E+025.05E+021.52E-013.17E-015.69E-01-8.07E-012.20E+003.45E+001.91E+002.45E+004.58E+00NANANA 01084.8-9.28/7/200811:132.30E+031.83E+021.94E+021.07E-012.87E-015.30E-01-6.47E-011.22E+001.94E+001.63E-021.31E+002.18E+00NANANA01184.8-9.28/30/200812:088.34E+037.00E+025.52E+024.46E-014.87E-018.10E-01-5.50E-011.86E+003.07E+00NANANANANANAJ:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 1 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION01284.8-9.210/30/200812:093.89E+034.52E+021.67E+024.08E-017.33E-018.25E-01-5.63E+006.17E+004.73E+00-4.82E+006.98E+006.56E+00NANANA01384.8-9.211/18/200812:004.41E+032.97E+021.61E+02-2.44E-015.37E-018.11E-012.13E+003.79E+004.76E+002.84E+003.82E+005.19E+00NANA NA01484.8-9.22/6/200911:227.37E+036.54E+022.02E+023.89E-015.58E-016.16E-011.22E+003.50E+004.06E+001.09E+003.57E+004.23E+00NANANAMW-32-590016017.11/19/20079:307.67E+037.50E+025.20E+026.30E-011.47E+001.60E+00-8.60E-011.98E+002.30E+004.90E-012.28E+002.60E+00NANANAMW-32-590026017.16/28/200714:252.40E+047.37E+021.97E+02-1.65E-015.90E-017.97E-01-1.74E+003.51E+003.30E+00-1.42E+003.87E+003.34E+00NANAN A0036017.18/13/200713:071.42E+046.00E+021.99E+02-2.71E-015.58E-017.58E-011.48E+002.10E+003.22E+00-4.66E-013.30E+003.65E+00NANANA 00158.818.310/26/200712:071.11E+044.61E+021.84E+023.22E-016.43E-017.36E-01-1.94E-013.82E+003.87E+002.45E+003.06E+004.08E+00NANA NA00258.818.31/18/200813:251.87E+049.11E+021.86E+024.67E-016.96E-017.57E-019.98E-014.25E+004.79E+001.99E+003.81E+004.65E+00NANANA 00358.818.35/5/200815:334.15E+032.01E+021.82E+027.61E-025.20E-019.70E-01-7.05E-011.89E+003.05E+001.25E+002.01E+003.77E+00NANANA 00458.818.36/9/200812:102.85E+034.81E+025.06E+02-3.39E-013.64E-017.61E-01-1.22E+001.94E+002.98E+00-7.10E-012.43E+003.91E+00NANA NA00558.818.37/31/200813:231.54E+031.63E+021.94E+021.72E-013.81E-016.90E-014.66E-011.97E+003.33E+00-1.08E+002.48E+003.26E+00NANAN A00658.818.39/2/200813:522.44E+034.59E+025.53E+022.19E-015.54E-019.94E-017.77E-011.85E+003.21E+00NANANANANANA 00758.818.310/24/200813:594.13E+022.00E+021.73E+021.63E-016.06E-017.44E-01-3.50E-017.51E+007.30E+00-1.32E+006.29E+006.66E+00NANANA00858.818.32/4/200915:461.78E+041.03E+031.98E+02-1.01E-015.73E-017.69E-011.01E-013.54E+003.41E+002.70E+003.41E+004.34E+00NANANA MW-32-85 001905-134 1/19/20079:40112E+04840E+02530E+02320E-01147E+00160E+00157E+00282E+00310E+00900E-01420E+00480E+00 NA NA NA MW-32-85 MW-32-85 001 90.5-13.4 1/19/20079:40 1.12E+04 8.40E+02 5.30E+02 3.20E-01 1.47E+00 1.60E+00 1.57E+00 2.82E+00 3.10E+00 9.00E-01 4.20E+00 4.80E+00 NA NA NA MW-32-8500290.5-13.46/28/200715:055.42E+033.77E+021.95E+02-4.15E-015.10E-016.75E-01-1.70E-012.77E+003.03E+00-3.05E-013.19E+003.21E+00NANANA00390.5-13.48/13/200710:485.70E+034.05E+022.01E+02-2.45E-024.47E-015.75E-013.28E-012.81E+003.15E+009.90E-012.98E+003.53E+00NANA NA00485.385.310/26/200711:121.26E+044.79E+021.79E+02-1.17E-014.27E-016.25E-018.85E-012.97E+003.45E+00-1.85E-023.23E+003.63E+00NANANA00585.385.31/18/200814:501.07E+046.90E+021.83E+02-3.03E-014.38E-017.35E-013.57E-012.64E+002.67E+00-5.37E-011.97E+002.13E+00NANA NA00685.385.35/5/200814:108.36E+032.64E+021.81E+02-6.65E-023.89E-017.59E-011.95E+002.16E+003.96E+00-3.64E-012.06E+003.27E+00NANAN A00785.385.36/9/200812:251.11E+048.21E+025.04E+02-9.56E-023.57E-017.12E-011.39E+002.01E+003.68E+00-5.47E-012.04E+003.34E+00NANAN A00885.385.37/31/200814:357.48E+032.83E+021.93E+021.16E-013.35E-016.24E-012.14E-012.06E+003.50E+001.07E+001.88E+003.43E+00NANANA 00985.385.39/2/200814:408.05E+036.90E+025.52E+021.42E-014.15E-017.65E-01-1.37E+002.45E+003.52E+00NANANANANANA 01085.385.310/24/200814:508.62E+036.66E+021.72E+021.13E-014.56E-015.68E-011.39E+005.78E+006.62E+003.08E+005.89E+007.32E+00NANAN A01185.385.32/4/200915:496.54E+036.38E+021.98E+025.26E-017.76E-018.50E-014.88E-012.85E+003.31E+002.27E+003.20E+004.15E+00NANANAMW-32-131001138-60.91/19/20079:451.13E+048.40E+025.30E+02-1.03E+001.47E+001.70E+00-6.00E-022.04E+002.30E+003.00E-022.07E+002.40E+00NANANAMW-32-131002138-60.96/28/200712:453.02E+021.88E+021.97E+02-1.39E-015.13E-015.94E-01-1.46E+005.09E+004.92E+009.88E-013.76E+004.38E+00NANA NA003138-60.98/13/200711:151.29E+021.70E+021.87E+022.69E-017.33E-018.51E-01-8.09E-014.86E+004.85E+00-1.19E+003.29E+003.22E+00NANA NA004130.8-53.710/26/200710:113.74E+022.39E+022.42E+022.47E-016.03E-017.06E-01-1.81E-013.48E+003.82E+00-2.55E-013.92E+003.99E+00NANANA005130.8-53.71/18/200811:235.04E+022.07E+021.79E+025.14E-017.79E-018.52E-018.47E-012.19E+002.21E+00-8.40E-021.98E+002.18E+00NANANA006130.8-53.75/5/200812:351.03E+031.36E+021.83E+02-2.89E-013.98E-017.75E-01-1.21E+002.28E+003.55E+00-3.26E-012.27E+003.66E+00NANANAMW-32-149001163-85.91/19/20079:501.05E+048.70E+025.70E+02NANANANANANANANANANANANAMW-32-149002163-85.96/28/200713:065.81E+022.03E+021.97E+02-2.82E-017.33E-019.70E-018.54E-012.85E+002.94E+00-8.16E-012.46E+002.60E+00NANA NA003163-85.98/13/200711:354.93E+022.09E+022.08E+02-6.38E-013.81E-016.52E-01-1.42E+003.76E+003.37E+001.63E+001.69E+002.91E+00NANA NA004149.3-72.210/26/200710:102.92E+032.94E+021.90E+02-2.45E-014.89E-017.22E-011.99E-013.10E+003.51E+001.65E-013.56E+003.99E+00NANANA005149.3-72.21/18/200811:181.15E+032.69E+021.85E+023.04E-018.25E-019.53E-012.94E+004.29E+003.08E+00-8.74E-012.82E+002.93E+00NANANA 005 149.3 72.2 1/18/200811:18 1.15E+03 2.69E+02 1.85E+02 3.04E01 8.25E01 9.53E01 2.94E+00 4.29E+00 3.08E+00 8.74E01 2.82E+00 2.93E+00 NA NA NA006149.3-72.25/5/200810:548.83E+021.31E+021.82E+027.39E-015.05E-017.94E-01-2.99E+002.67E+003.71E+002.04E+002.12E+004.12E+00NANA NA007149.3-72.27/31/200811:105.32E+021.31E+021.94E+021.38E-023.46E-016.80E-011.06E+001.65E+002.87E+001.42E+001.56E+002.81E+00NANA NA008149.3-72.210/24/200810:285.03E+022.10E+021.72E+024.69E-016.52E-016.99E-011.80E+005.22E+006.07E+001.25E+004.96E+005.82E+00NANANA009149.3-72.22/4/200913:502.65E+021.18E+021.17E+024.53E-016.75E-017.34E-015.44E-012.99E+003.38E+003.32E-012.91E+003.28E+00NANAN AMW-32-173001172.8-95.710/26/20079:555.89E+033.87E+021.92E+021.86E-025.87E-017.54E-016.92E-013.00E+003.51E+00-9.97E-012.91E+003.02E+00NANANAMW-32-173002172.8-95.71/18/200811:053.40E+034.07E+021.82E+021.13E-016.02E-017.63E-01-3.84E-012.00E+002.18E+00-6.14E-012.09E+002.25E+00NANANA003172.8-95.75/5/200810:331.69E+031.52E+021.82E+021.11E-023.53E-017.09E-011.95E-012.18E+003.64E+005.47E-012.24E+003.91E+00NANAN A004172.8-95.77/31/200810:521.08E+031.48E+021.92E+026.80E-014.52E-017.11E-01-1.17E+001.58E+002.47E+006.06E-011.65E+002.96E+00NANANA005172.8-95.79/2/200811:309.72E+023.72E+025.48E+021.85E-014.64E-018.41E-01-1.02E+002.67E+003.88E+00NANANANANANA 006172.8-95.710/24/200810:251.03E+032.67E+021.74E+021.05E-013.60E-014.36E-018.63E-015.67E+006.61E+002.30E+006.36E+007.74E+00NANANA007172.8-95.72/4/200913:407.56E+021.45E+021.17E+022.57E-014.26E-014.74E-011.79E+003.65E+004.41E+002.56E+003.47E+004.49E+00NANAN AMW-32-190001194.5-117.41/19/20079:551.13E+048.40E+025.20E+024.20E-011.50E+001.70E+002.60E-011.26E+001.40E+007.10E-011.50E+001.70E+00NANANAMW-32-190002194.5-117.46/28/200713:072.41E+032.72E+021.87E+02-5.09E-026.12E-018.20E-011.52E+003.07E+003.64E+00-1.29E+003.27E+003.37E+00NANANA003194.5-117.48/13/200711:251.72E+032.67E+022.03E+02-3.65E-018.12E-011.04E+006.21E-012.49E+002.93E+00-1.19E+002.38E+002.39E+00NANANA004190.3-113.710/26/20079:539.76E+034.80E+021.93E+02-5.05E-017.75E-019.73E-01-6.17E-013.07E+003.27E+00-1.94E-013.18E+003.57E+00NANANA005190.3-113.71/18/200811:358.89E+036.32E+021.83E+024.28E-017.73E-018.69E-016.57E-011.71E+002.02E+005.18E-011.65E+001.96E+00NANANA006190.3-113.75/5/200810:576.73E+032.41E+021.82E+02-1.68E-014.28E-018.16E-01-1.18E+002.08E+003.24E+00-2.62E+003.16E+002.97E+00NANANA007190.3-113.77/31/200811:244.71E+032.35E+021.94E+023.21E-013.35E-015.51E-01-8.54E-011.55E+002.53E+002.22E+001.77E+003.30E+00NANANA008190.3-113.79/2/200811:403.81E+035.20E+025.44E+025.92E-015.81E-019.53E-011.39E+002.82E+004.63E+00NANANANANANA 009190.3-113.710/24/200810:313.35E+034.31E+021.73E+023.30E-035.75E-017.41E-015.89E-015.33E+005.98E+003.85E+005.68E+007.16E+00NANANA010190.3-113.72/4/200913:452.69E+034.26E+021.98E+022.44E-015.57E-016.47E-013.60E-022.67E+002.95E+004.71E-013.02E+003.44E+00NANA NAMW-3300119.2-0.412/15/20058:001.42E+054.26E+037.00E+02NANANANANANANANANANANANAMW-3300219.2-0.412/19/200511:381.99E+055.97E+037.00E+02NANANANANANANANANANANANA00319.2-0.412/29/200511:302.20E+056.60E+037.00E+02NANANANANANANANANANANANA 00419.2-0.41/6/200612:301.89E+055.67E+037.00E+02NANANANANANANANANANANANA 00519.2-0.41/13/200612:102.32E+056.96E+037.00E+02NANANANANANANANANANANANA 00619.2-0.41/20/200610:402.26E+056.78E+037.00E+02NANANANANANANANANANANANA 00719.2-0.41/27/200611:102.42E+057.26E+037.00E+02NANANANANANANANANANANANA 00819.2-0.42/3/200612:152.50E+052.84E+046.33E+02NANANANANANANANANANANANA 00919.2-0.42/7/200616:002.14E+052.64E+046.37E+021.36E-015.06E-016.25E-01NANANANANANANANANA 01019.2-0.42/16/200613:552.61E+052.91E+046.36E+02NANANANANANANANANANANANA 01119.2-0.43/3/200610:202.53E+057.59E+037.00E+02NANANANANANANANANANANANA 01219.2-0.44/7/200610:252.21E+056.63E+037.00E+02NANANANANANANANANANANANA 01419.2-0.45/17/200612:501.35E+052.01E+041.60E+037.79E-011.43E+001.47E+001.17E+011.19E+011.37E+014.62E+001.41E+011.28E+01NANANA01519.2-0.46/7/200610:151.41E+051.85E+041.32E+036.74E-015.63E-016.44E-016.95E-018.72E+009.58E+00-6.11E+008.63E+008.02E+00NANANAJ:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 2 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION01719.2-0.47/3/20069:502.64E+052.01E+043.85E+034.78E-011.37E+001.57E+00-6.85E-011.17E+011.27E+01-5.24E+001.28E+011.21E+01NANANA01819.2-0.48/4/20068:151.84E+052.54E+041.87E+03NANANA3.53E+006.31E+007.84E+00-1.14E+007.35E+008.60E+00NANANA01919.2-0.48/30/200613:001.15E+051.77E+044.39E+03NANANA-6.99E-018.47E+008.90E+003.71E+007.21E+009.60E+00NANANA 02019.2-0.46/15/200715:489.06E+043.26E+033.61E+02-2.82E-012.86E-014.85E-01-2.78E-013.82E+003.76E+00-1.64E+003.44E+003.39E+00-8.12E-011.16E+011.37E+0102119.2-0.48/3/200710:202.30E+047.08E+022.04E+025.80E-018.49E-019.33E-018.18E-012.37E+002.83E+002.45E-012.13E+002.46E+00NANANA 02219.2-0.44/28/200815:005.85E+041.16E+032.58E+021.69E-012.97E-015.22E-011.08E-011.87E+003.12E+00-4.51E-022.12E+003.49E+00NANAN A02319.2-0.49/4/200814:416.80E+041.82E+035.47E+021.33E-014.05E-017.55E-015.46E-011.61E+002.83E+00NANANANANANAMW-3400118.9-0.412/13/200513:536.39E+041.92E+037.00E+02NANANANANANANANANANANANAMW-3400218.9-0.412/19/200510:351.21E+053.63E+037.00E+02NANANANANANANANANANANANA00318.9-0.412/29/200510:501.47E+054.41E+037.00E+02NANANANANANANANANANANANA 00418.9-0.41/6/200611:351.59E+054.77E+037.00E+02NANANANANANANANANANANANA 00518.9-0.41/13/200611:401.31E+053.93E+037.00E+02NANANANANANANANANANANANA 00618.9-0.41/20/200610:002.11E+056.33E+037.00E+02NANANANANANANANANANANANA 00718.9-0.41/27/200610:502.12E+056.36E+037.00E+02NANANANANANANANANANANANA 008189-04 2/3/200612:20224E+05269E+04633E+02 NA NA NA NA NA NA NA NA NA NA NA NA 008 18.9-0.4 2/3/200612:20 2.24E+05 2.69E+04 6.33E+02 NA NA NA NA NA NA NA NA NA NA NA NA00918.9-0.42/7/200615:151.74E+052.38E+046.37E+029.22E-023.78E-014.67E-01NANANANANANANANANA 01018.9-0.42/16/200613:551.99E+052.55E+046.36E+02NANANANANANANANANANANANA 01118.9-0.43/3/20069:352.30E+056.90E+037.00E+02NANANANANANANANANANANANA 01218.9-0.44/7/200610:052.76E+058.28E+037.00E+02NANANANANANANANANANANANA 01318.9-0.45/17/200613:153.64E+045.52E+038.35E+022.50E-026.63E-019.24E-017.84E+001.39E+011.55E+012.72E+001.31E+011.44E+01NANANA 01418.9-0.46/26/200610:201.05E+048.52E+023.41E+023.71E-016.49E-017.79E-011.83E+007.85E+008.96E+005.84E+007.34E+009.37E+00NANANA 01518.9-0.47/26/200610:204.07E+043.51E+031.57E+032.18E-018.97E-011.16E+00-1.73E-014.87E+005.24E+00-2.54E-015.64E+006.78E+00NANA NA01618.9-0.48/24/200612:186.69E+041.05E+043.39E+03NANANA1.62E+005.81E+006.78E+00-1.60E+005.89E+005.85E+00NANANA 01718.9-0.49/21/20069:451.61E+042.78E+035.86E+020.00E+001.12E+001.31E+006.09E-021.69E+001.85E+00-2.10E-011.65E+001.79E+00NANANA 01818.9-0.48/3/200710:212.22E+047.44E+022.13E+023.94E-027.08E-019.04E-01-1.55E+004.53E+004.44E+002.12E+003.40E+004.01E+00NANANAMW-3500119-0.412/13/200513:504.23E+043.18E+037.00E+02NANANANANANANANANANANANAMW-3500219-0.412/19/200510:177.60E+042.28E+037.00E+02NANANANANANANANANANANANA00319-0.412/29/200510:008.05E+042.42E+037.00E+02NANANANANANANANANANANANA 00419-0.41/6/200611:109.54E+042.86E+037.00E+02NANANANANANANANANANANANA 00519-0.41/13/200610:509.78E+042.93E+037.00E+02NANANANANANANANANANANANA 00619-0.41/20/20069:301.04E+053.12E+037.00E+02NANANANANANANANANANANANA 00719-0.41/27/200611:003.87E+041.16E+037.00E+02NANANANANANANANANANANANA 00819-0.42/3/200612:205.14E+041.29E+046.33E+02NANANANANANANANANANANANA 00919-0.42/7/200614:408.44E+041.66E+046.37E+021.62E-014.32E-015.28E-01NANANANANANANANANA 01019-0.42/16/200613:309.04E+041.72E+046.36E+02NANANANANANANANANANANANA 01119-0.43/3/20069:051.19E+053.57E+037.00E+02NANANANANANANANANANANANA 011 19 0.4 3/3/20069:05 1.19E+05 3.57E+03 7.00E+02 NA NA NA NA NA NA NA NA NA NA NA NA01219-0.44/7/20069:555.62E+041.69E+037.00E+02NANANANANANANANANANANANA 01319-0.45/17/200613:374.07E+046.15E+038.72E+024.70E-017.53E-017.87E-016.46E+002.07E+011.64E+013.04E+001.37E+011.53E+01NANANA 01419-0.46/26/200610:401.74E+041.37E+034.29E+02-2.30E-016.66E-018.69E-01-1.34E+001.01E+011.09E+01-2.45E+008.92E+009.36E+00NANAN A01519-0.49/21/20069:304.53E+047.19E+039.12E+026.26E-011.30E+001.41E+00-3.15E-011.96E+001.82E+002.44E-011.49E+001.69E+00NANANA 01619-0.46/15/200713:582.03E+035.87E+023.84E+022.26E-014.34E-014.91E-014.66E+018.82E+002.81E+00-1.27E+002.58E+002.63E+006.18E+001.92E+012.20E+0101719-0.48/3/200710:225.95E+035.58E+022.70E+029.45E-025.76E-016.98E-01-9.20E-012.71E+002.82E+005.74E-012.88E+003.33E+00NANANA 01819-0.44/28/200813:381.04E+031.77E+022.19E+022.34E-012.96E-015.03E-01-2.93E-022.03E+003.34E+00-5.77E-022.36E+003.87E+00NANANAMW-36-24 600116.1-4.32/7/200617:00NANANA1.29E+005.48E-015.53E-01NANANANANANANANANAMW-36-24600216.1-4.32/27/20069:453.04E+049.95E+036.36E+02NANANANANANANANANANANANA00316.1-4.33/23/200616:003.42E+043.81E+031.86E+039.99E-016.42E-016.42E-01-3.86E+001.01E+011.05E+015.02E+009.33E+001.22E+016.41E+011.59E+011.53E+0100416.1-4.34/5/200610:30NANANA1.56E+004.86E-014.35E-01NANANANANANANANANA 00516.1-4.36/5/200612:202.02E+021.59E+021.51E+023.70E-017.66E-019.31E-013.99E+001.03E+011.21E+016.90E-021.02E+011.12E+01NANANA 00616.1-4.38/28/200610:302.45E+021.80E+021.71E+02NANANA-1.04E+003.27E+003.32E+001.66E+003.06E+004.19E+00NANANA 00716.1-4.36/27/200710:401.54E+021.76E+021.93E+025.90E-017.92E-018.46E-013.31E-012.81E+003.17E+004.00E-013.03E+003.45E+00NANANA 00816.1-4.38/8/200713:451.63E+021.85E+022.04E+02-5.35E-016.81E-019.31E-011.53E-013.40E+003.77E+003.56E+003.40E+004.17E+00-7.46E+002.10E+012.54E+0100916.1-4.310/18/200710:062.86E+021.91E+022.01E+028.56E-027.60E-019.26E-017.20E-012.91E+003.37E+003.11E-013.01E+003.47E+00NANAN A01016.1-4.31/23/200814:182.16E+032.36E+021.70E+021.03E-013.12E-013.76E-012.92E-022.39E+002.67E+00-4.84E-012.37E+002.57E+00NANAN A01116.1-4.37/24/200813:571.02E+031.22E+021.63E+023.38E-013.75E-016.24E-013.97E-012.09E+003.61E+00-5.45E-012.37E+003.85E+00NANAN A01216.1-4.311/10/200815:332.01E+021.50E+021.61E+025.52E-017.53E-018.04E-010.00E+006.81E+004.46E+002.72E+003.84E+005.41E+00NANAN A01316.1-4.31/22/200912:482.37E+021.16E+021.06E+02-6.26E-017.37E-019.48E-015.41E-012.88E+003.34E+003.15E-013.35E+003.82E+00NANAN A MW-36-41 001 37-252 2/10/200611:10475E+04124E+04638E+02 NA NA NA NA NA NA NA NA NA NA NA NA MW-36-41 MW-36-41 001 37-25.2 2/10/200611:10 4.75E+04 1.24E+04 6.38E+02 NA NA NA NA NA NA NA NA NA NA NA NAMW-36-4100237-25.22/27/200613:454.58E+041.22E+046.36E+02NANANANANANANANANANANANA00337-25.23/24/200612:455.52E+044.65E+031.86E+033.48E+005.46E-014.16E-01-5.91E+001.39E+011.45E+012.97E+001.53E+011.74E+014.87E+011.65E+011.65E+0100437-25.24/5/200612:55NANANA3.53E+006.24E-015.02E-01NANANANANANANANANA 00537-25.26/5/200611:302.05E+043.17E+036.01E+022.30E+006.59E-016.10E-01-3.37E+001.27E+011.33E+016.21E-021.03E+011.13E+01NANANA 00637-25.28/28/200610:102.01E+043.09E+036.45E+02NANANA1.96E+004.15E+005.22E+00-2.78E-013.56E+003.78E+00NANANA 00737-25.26/27/200712:306.11E+033.50E+021.74E+022.18E+001.17E+009.85E-014.30E-014.61E+001.74E+001.36E+002.91E+003.67E+00NANANAMW-36-5200149.7-37.92/10/200610:302.24E+048.55E+036.38E+02NANANANANANANANANANANANAMW-36-5200249.7-37.92/27/200612:052.57E+049.14E+036.36E+02NANANANANANANANANANANANA00349.7-37.93/24/200616:002.68E+043.47E+031.87E+034.11E+005.66E-015.14E-014.47E+009.06E+001.04E+01-2.47E+009.69E+001.03E+011.18E+011.44E+011.54E+0100449.7-37.94/5/200614:30NANANA5.01E+007.23E-016.26E-01NANANANANANANANANA 00549.7-37.96/5/200611:302.40E+043.68E+036.40E+024.42E+008.33E-015.53E-013.49E+001.05E+011.21E+014.80E-011.04E+011.15E+01NANANA 00649.7-37.98/28/200610:001.41E+042.19E+035.35E+02NANANA4.06E-016.52E+007.36E+00-2.69E-015.23E+005.69E+00NANANA 00749.7-37.96/27/200711:451.01E+044.89E+021.95E+022.62E+001.09E+003.28E-01-3.82E-012.77E+002.99E+009.25E-012.61E+003.14E+00NANA NA00849.7-37.98/8/200714:151.25E+041.24E+034.60E+022.26E+001.00E+002.82E-011.30E+002.97E+003.51E+00-8.82E-013.31E+003.55E+004.27E+002.14E+012.47E+01J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 3 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION00949.7-37.91/23/200814:131.13E+044.47E+021.71E+024.85E+009.69E-014.24E-01-2.89E-012.01E+002.25E+004.08E-011.86E+002.20E+00NANA NA01049.7-37.97/24/200816:001.26E+047.66E+023.74E+025.67E+007.42E-014.73E-01-4.79E-012.24E+003.69E+002.77E-022.11E+003.53E+00NANA NA01149.7-37.911/10/200816:531.10E+044.40E+021.63E+028.27E+001.24E+003.89E-01-3.85E-013.86E+004.21E+001.36E+004.67E+005.65E+00NANANA01249.7-37.91/22/200912:596.79E+036.03E+022.06E+023.37E+008.99E-016.07E-01-6.07E-012.96E+003.24E+001.65E+003.24E+004.05E+00NANA NAMW-37-220012/24/20069:501.07E+045.92E+036.39E+02NANANANANANANANANANANANAMW-37-220022/28/200610:201.28E+042.03E+031.31E+032.37E+008.91E-018.44E-012.41E+001.92E+011.95E+013.60E+001.58E+011.77E+014.24E+011.48E+011.47E+010022/28/200610:20NANANA2.40E+009.10E-019.16E-01NANANANANANANANANA 0033/10/200610:352.32E+042.57E+031.28E+034.70E+009.84E-017.87E-014.61E+001.46E+011.63E+015.65E+001.39E+011.57E+012.08E+011.27E+011.33E+010043/27/200610:353.49E+043.78E+031.81E+034.05E+008.76E-016.97E-019.75E-014.68E+005.21E+007.46E-014.48E+004.97E+005.43E+011.53E+011.52E+010056/27/200610:251.05E+048.55E+023.40E+029.57E+001.20E+007.87E-013.20E+006.92E+008.00E+00-8.05E-016.94E+007.43E+00NANANA 0069/29/20069:307.37E+031.22E+033.76E+021.42E+011.80E+009.01E-01-3.84E-028.51E+009.49E+00-1.03E+007.63E+007.69E+00NANANA 0076/27/200710:504.05E+033.35E+021.94E+021.49E+012.13E+008.72E-01-2.26E+004.88E+003.50E+00-1.12E+003.24E+003.34E+00NANANA 0088/7/200710:552.79E+032.69E+021.89E+021.83E+012.07E+008.57E-012.74E+003.93E+004.22E+004.23E-013.07E+003.54E+00NANANA 00910/15/200714:302.26E+032.22E+021.69E+022.29E+012.28E+004.67E-011.33E+003.25E+003.78E+00-1.42E+003.44E+003.44E+00NANANA 010 1/23/200810:42652E+03354E+02171E+02873E+00127E+00463E-01-209E+00296E+00286E+00234E-01308E+00349E+00 NA NA NA 010 1/23/200810:42 6.52E+03 3.54E+02 1.71E+02 8.73E+00 1.27E+00 4.63E-01-2.09E+00 2.96E+00 2.86E+00 2.34E-01 3.08E+00 3.49E+00 NA NA NA0117/24/200811:204.33E+032.28E+021.95E+021.22E+011.25E+007.14E-014.32E-012.13E+003.66E+002.97E+002.57E+004.83E+00NANANA 01211/10/200812:202.68E+033.92E+021.74E+021.80E+011.88E+004.08E-012.81E+004.96E+005.96E+00-2.85E-014.53E+004.88E+00NANANA 0131/21/200914:275.27E+035.36E+022.05E+028.81E+001.33E+006.79E-01-3.12E-013.02E+003.27E+00-2.03E+003.09E+002.82E+00NANANAMW-37-320022/28/200612:002.86E+042.73E+031.32E+031.78E+011.49E+002.22E+001.27E+011.93E+012.17E+011.50E+011.90E+012.20E+013.41E+011.46E+011.48E+01MW-37-320022/28/200612:00NANANA1.82E+011.72E+002.28E+00NANANANANANANANANA0033/10/200612:502.83E+042.79E+031.28E+031.52E+011.39E+001.90E+001.43E+011.59E+011.78E+011.51E+001.51E+011.65E+011.13E+011.26E+011.34E+010043/27/200611:101.39E+042.61E+031.72E+031.95E+011.59E+002.44E+001.10E+004.72E+005.25E+00-8.50E-014.41E+004.80E+006.09E+001.40E+011.51E+010056/27/20069:157.92E+036.63E+022.99E+022.98E+012.64E+003.72E+00-2.37E-015.24E+006.07E+00-2.02E-014.75E+005.78E+00NANANA 0069/29/200610:151.15E+041.88E+034.64E+021.53E+011.80E+001.91E+00-3.21E+008.98E+008.67E+002.51E+008.73E+001.06E+01NANANA 0012/24/200710:553.01E+049.93E+036.39E+02NANANANANANANANANANANANA 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01325.4-11.15/22/20069:207.59E+024.11E+024.46E+021.52E-012.88E-013.20E-013.42E+001.03E+017.57E+003.40E+001.02E+017.93E+00NANANA01425.4-11.16/21/20069:489.16E+024.38E+024.60E+02-2.66E+002.16E+002.40E+002.52E+007.56E+005.45E+002.50E+007.49E+005.59E+001.10E+005.70E+006.40E+00J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 4 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION01425.4-11.16/21/20069:487.62E+021.77E+021.70E+02NANANA5.90E-012.10E+002.40E+001.20E+002.07E+002.20E+00NANANA01525.4-11.17/6/200612:005.93E+024.20E+024.52E+02-3.70E-014.50E-015.20E-013.40E+001.02E+017.70E+002.98E+008.95E+007.41E+00NANAN A01625.4-11.18/7/200613:232.15E+021.80E+021.74E+025.00E-026.30E-017.10E-012.29E+006.47E+009.51E+00-7.22E-016.90E+009.33E+002.75E+012.94E+013.13E+0101725.4-11.19/5/200611:303.53E+021.86E+021.67E+02-5.30E-017.80E-018.70E-013.81E-017.68E+008.63E+00-4.48E-016.20E+006.42E+00NANA NA01825.4-11.111/22/200610:381.78E+024.08E+024.50E+02-7.00E-026.60E-017.30E-013.13E+009.38E+007.14E+003.08E+009.25E+007.53E+00NANANA01925.4-11.12/12/20079:582.24E+036.00E+025.30E+02-5.10E-011.32E+001.50E+002.73E+001.92E+002.00E+00-1.03E+001.41E+001.80E+00NANA 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005671310/23/200812:534.15E+022.01E+021.99E+023.31E+001.12E+007.74E-01-1.28E+005.46E+005.95E+00-1.22E-015.38E+006.06E+00NANANAMW-39-8400183.5-3.55/22/200710:385.91E+021.89E+021.29E+021.72E+007.22E-015.57E-01-9.07E-021.53E+001.69E+005.61E-011.58E+001.81E+00-1.68E+009.99E+001.15E+01MW-39-8400283.5-3.58/7/200715:302.52E+021.77E+021.91E+027.97E-017.18E-017.30E-013.55E-013.07E+003.44E+00-1.11E+003.59E+003.76E+00NANANA 003835-35 1/17/200813:25143E+02170E+02184E+02178E+00947E-01724E-01-274E+00299E+00286E+00836E-01294E+00350E+00 NA NA NA 003 83.5-3.5 1/17/200813:25 1.43E+02 1.70E+02 1.84E+02 1.78E+00 9.47E-01 7.24E-01-2.74E+00 2.99E+00 2.86E+00 8.36E-01 2.94E+00 3.50E+00 NA NA NA00483.5-3.55/1/200814:101.50E+021.18E+021.96E+022.23E+007.07E-018.93E-01-2.12E-012.24E+003.67E+00-2.12E-012.24E+003.67E+00NANAN A00583.5-3.510/23/200812:562.34E+021.88E+021.99E+021.04E+006.90E-015.86E-011.74E+005.88E+006.93E+001.12E+006.98E+008.05E+00NANAN 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A003127.2-5410/12/200711:302.83E+011.44E+021.64E+021.01E-014.97E-016.24E-01-2.32E+003.90E+004.06E+00-1.51E+003.72E+003.79E+00NANANA004127.2-541/7/200812:309.75E+001.48E+021.79E+025.17E-016.83E-017.23E-016.45E-012.42E+002.77E+003.24E-012.28E+002.59E+00NANANA 006127.2-545/30/200813:003.27E+019.16E+011.63E+02-4.84E-015.30E-019.68E-016.92E-012.23E+003.43E+001.36E+002.00E+003.62E+00NANAN A007127.2-548/11/200810:341.68E+021.04E+021.70E+021.65E-012.41E-014.19E-011.24E-011.65E+002.81E+007.30E-031.49E+002.51E+00-8.77E+001.13E+012.01E+01J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 5 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE 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CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION0056330.58/14/200713:104.17E+021.98E+022.00E+029.30E-024.72E-015.75E-01-8.93E-012.91E+003.08E+00-3.39E-013.40E+003.11E+00NANANA0066330.510/31/200713:305.13E+021.82E+021.81E+023.77E-014.10E-014.21E-012.76E+004.29E+004.81E+001.91E+003.90E+004.71E+00NANANA0076330.51/24/200812:552.91E+022.00E+022.12E+022.85E-014.53E-014.99E-011.73E+014.35E+002.31E+001.40E+003.17E+002.43E+00NANANA 0086330.54/30/200815:381.61E+021.19E+021.96E+024.11E-024.06E-017.89E-01-8.72E-022.06E+003.38E+009.13E-012.44E+004.27E+00NANANA 0096330.57/25/200812:185.50E+022.55E+023.75E+023.07E-013.66E-016.17E-01-2.33E+002.53E+003.03E+00-2.09E-011.74E+002.85E+00NANANA 0106330.510/23/200813:173.18E+021.61E+021.66E+023.23E-013.83E-013.92E-01-3.20E+005.21E+005.30E+00-1.59E+005.73E+006.02E+00NANAN A0116330.52/3/20099:402.06E+021.92E+021.97E+024.52E-017.98E-018.95E-011.96E+003.53E+004.18E+003.09E+003.06E+004.12E+00NANANAMW-44-102001912.56/13/200610:352.53E+022.01E+021.96E+023.53E-019.93E-011.26E+00-3.22E+008.26E+008.67E+00-7.71E-017.99E+008.52E+00NANANAMW-44-102002912.57/20/200610:503.16E+021.82E+021.64E+02-3.39E-011.05E+001.29E+00-2.99E+009.39E+009.83E+00-2.34E+009.50E+009.39E+00NANANA003912.58/4/20069:407.61E+022.30E+021.81E+02NANANA-4.04E+008.10E+007.76E+00-2.00E+007.01E+006.82E+00NANANA 004912.59/13/200611:302.67E+021.94E+022.00E+02NANANA7.19E+009.68E+001.12E+01-4.76E-018.18E+008.99E+00NANANA 0058013.56/19/200717:462.98E+021.76E+021.83E+02-1.33E-014.81E-016.39E-011.88E+002.15E+002.63E+006.41E-012.02E+002.38E+00-4.92E+001.31E+011.58E+010068013.58/14/200714:552.84E+021.89E+021.99E+021.97E-017.63E-018.99E-01-1.46E+002.76E+002.77E+00-1.35E+002.79E+002.73E+00NANANA 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00553.217.18/10/200711:002.70E+021.88E+022.02E+025.07E-018.04E-018.91E-01-3.84E-013.48E+003.75E+001.49E-012.94E+003.37E+00NANAN AMW-47-8000174-3.74/13/200611:452.33E+034.28E+022.29E+022.73E+007.35E-016.53E-01-5.82E-014.48E+005.14E+002.25E-013.91E+004.76E+00NANANAMW-47-8000274-3.77/18/20068:511.87E+033.87E+022.58E+022.86E+001.43E+001.14E+001.67E+001.05E+011.19E+012.39E+009.21E+001.09E+01NANANAJ:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 7 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION00374-3.76/19/200711:002.36E+035.94E+023.58E+023.27E+008.98E-015.28E-012.05E+003.81E+004.58E+00-2.27E+004.82E+003.92E+004.08E-011.18E+011.38E+0100474-3.78/10/200712:213.51E+037.25E+024.52E+023.55E+001.21E+009.05E-01-9.39E-023.21E+003.56E+00-8.20E-023.18E+003.50E+00NANANAMW-48-2300120.4-52/8/200610:101.66E+023.26E+023.42E+021.93E-015.04E-015.94E-01-2.14E-011.04E+011.13E+011.46E+009.95E+001.12E+01NANANAMW-48-2300220.4-54/12/20069:581.24E+024.08E+024.52E+02-1.10E-013.90E-014.40E-013.25E+009.75E+007.26E+002.49E+007.47E+006.18E+00NANANA00320.4-54/27/200613:422.38E+021.94E+022.03E+02-2.50E-024.58E-015.04E-01-1.88E+005.06E+005.65E+00-1.19E-014.40E+005.27E+00NANAN A00420.4-55/22/200610:307.55E+024.26E+024.46E+022.42E-012.88E-013.10E-013.22E+009.67E+007.12E+004.29E+001.29E+019.62E+00NANANA 00520.4-56/9/200611:156.03E+014.39E+026.24E+023.70E-013.60E-014.00E-012.59E+007.76E+005.90E+003.25E+009.74E+007.61E+001.60E+011.53E+011.62E+0100520.4-56/9/200611:152.95E+024.14E+024.53E+023.10E-019.88E-011.26E+001.09E+005.21E+005.80E+003.08E+005.41E+005.96E+00NANANA 00520.4-56/9/200611:157.37E+022.09E+021.56E+02NANANANANANANANANANANANA 00620.4-57/6/200612:004.21E+024.17E+024.52E+02-2.20E-014.20E-014.90E-012.55E+007.64E+005.49E+002.60E+007.79E+005.78E+00NANANA 00720.4-58/8/200610:301.04E+021.68E+021.72E+027.00E-026.30E-017.00E-011.93E+004.76E+005.56E+001.99E+004.41E+005.37E+00NANANA 00820.4-59/5/200610:052.44E+011.59E+021.72E+02-6.00E-027.80E-018.60E-01-2.90E+007.82E+008.12E+001.05E-018.58E+001.02E+01NANANA 00920.4-511/22/20069:231.67E+024.08E+024.50E+02-7.00E-026.30E-017.10E-013.91E+001.17E+018.71E+003.22E+009.67E+007.76E+00NANANA 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00838.1-23.411/15/200614:216.19E+031.38E+031.00E+032.11E+012.46E+008.10E-01-6.60E-012.25E+002.60E+001.18E+002.34E+002.60E+002.60E+005.70E+006.20E+0000938.1-23.46/26/200712:304.44E+032.90E+021.86E+022.08E+011.65E+006.22E-01-3.62E-014.56E+004.32E+00-2.09E+003.66E+003.54E+00-5.19E+001.30E+011.54E+0101038.1-23.48/9/200712:054.30E+037.91E+024.59E+022.56E+012.77E+008.29E-01-1.17E+003.27E+003.37E+002.77E+003.52E+004.56E+004.03E-012.10E+012.46E+0101138.1-23.41/28/200815:492.81E+034.92E+022.98E+022.94E+012.57E+005.58E-018.68E-012.10E+002.43E+008.96E-012.13E+002.52E+005.79E+001.73E+011.97E+0101238.1-23.44/25/200812:383.20E+032.54E+021.44E+022.33E+011.49E+005.24E-014.07E-011.82E+003.18E+005.91E-012.37E+004.13E+00-1.03E+001.17E+012.04E+0101338.1-23.47/30/200815:062.52E+031.45E+021.30E+022.16E+011.41E+006.09E-014.49E-011.59E+002.79E+007.96E-011.70E+003.09E+00-2.73E+001.59E+012.84E+0101438.1-23.411/5/200814:312.54E+034.04E+021.97E+022.16E+012.50E+007.01E-01-1.27E+006.33E+006.92E+00-1.93E+008.10E+007.46E+004.70E+001.84E+012.09E+0101538.1-23.42/6/20099:572.25E+032.40E+021.70E+022.07E+012.37E+009.73E-011.38E+003.51E+004.09E+00-2.43E+003.38E+003.11E+00-2.15E+002.15E+012.48E+01MW-49-6500160-45.43/22/200616:555.43E+032.13E+031.82E+031.85E+011.01E+004.13E-011.36E+001.43E+011.72E+015.51E+001.37E+011.81E+01NANANAMW-49-6500360-45.45/19/200615:555.70E+039.38E+023.84E+021.13E+018.98E-014.28E-01-2.86E+008.51E+008.67E+00-1.43E-019.39E+001.03E+01NANAN 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00860-45.411/15/200613:463.04E+031.20E+031.00E+031.92E+012.31E+008.40E-012.12E+002.61E+002.80E+003.00E-012.07E+002.40E+00-1.80E+006.90E+007.70E+0000960-45.46/26/200712:302.62E+032.45E+021.85E+021.58E+011.58E+008.28E-01-1.36E-033.06E+003.38E+00-3.59E+004.30E+002.75E+00-7.43E+001.41E+011.68E+0101060-45.48/9/200711:202.41E+036.42E+024.60E+022.08E+012.40E+009.11E-013.44E-012.76E+003.13E+001.65E+003.03E+003.73E+003.50E+002.14E+012.49E+0101160-45.41/28/200816:521.85E+034.22E+022.95E+022.73E+012.79E+006.29E-012.83E+003.72E+003.81E+00-1.63E+003.17E+003.09E+001.01E+011.95E+012.20E+0101260-45.44/25/200813:131.93E+031.86E+021.96E+021.90E+016.62E-013.64E-01-8.45E-021.93E+003.28E+00-1.40E-012.29E+003.84E+006.81E+009.59E+001.62E+0101360-45.47/30/200813:581.56E+031.23E+021.30E+021.78E+011.29E+005.51E-01-4.77E-012.20E+003.63E+008.42E-022.02E+003.39E+00-6.53E+001.67E+012.96E+01J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 8 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION01460-45.411/5/200814:431.26E+033.02E+021.92E+021.72E+012.23E+005.97E-01-4.96E+006.60E+006.62E+002.51E+006.11E+007.41E+008.42E-011.80E+012.06E+0101560-45.42/6/20099:591.42E+032.10E+021.70E+021.73E+012.10E+009.15E-01-9.15E-012.96E+003.20E+007.61E-012.64E+003.21E+002.70E+002.22E+012.54E+01MW-50-4200142-27.13/22/200614:259.75E+035.78E+022.14E+021.93E+011.12E+004.76E-01-1.36E+009.90E+001.13E+01-5.74E-018.55E+001.02E+014.01E+001.34E+011.46E+01MW-50-4200342-27.15/19/200613:554.59E+037.74E+023.53E+021.95E+011.25E+004.77E-014.84E+008.95E+001.18E+01-4.07E-018.17E+001.02E+01NANANA00342-27.15/19/200613:554.58E+033.84E+036.30E+02NANANANANANANANANANANANA 00442-27.16/7/20069:001.79E+021.89E+021.56E+023.94E+007.62E-016.06E-011.15E-017.81E+008.62E+00-1.70E+007.37E+007.69E+00NANANA 00542-27.17/3/200611:353.98E+022.18E+022.02E+023.45E+002.00E+001.65E+006.90E+001.38E+011.65E+014.75E+001.04E+011.30E+01NANANA 00642-27.18/1/200611:201.41E+036.42E+026.14E+02NANANA8.99E+001.01E+011.33E+016.21E+009.26E+001.24E+011.12E+011.53E+011.64E+01 00742-27.18/28/200611:503.11E+021.89E+021.76E+02NANANA1.97E+005.84E+006.74E+003.49E+006.36E+007.93E+00NANANA 00842-27.111/15/200611:501.70E+031.11E+031.00E+031.13E+011.56E+008.30E-017.20E+004.20E+004.30E+00-9.00E-013.00E+003.80E+00-1.20E+006.00E+006.70E+0000942-27.16/26/200714:302.15E+021.71E+021.86E+021.16E+011.35E+007.64E-011.91E+004.44E+005.12E+00-1.64E+004.29E+003.94E+00-6.30E+001.84E+012.19E+0101042-27.17/26/200711:201.45E+021.74E+021.93E+021.94E+011.81E+005.31E-01-5.50E+004.71E+003.68E+002.53E+003.39E+004.32E+004.92E+001.91E+012.19E+0101142-27.110/18/200714:081.01E+021.76E+021.97E+022.45E+012.52E+005.74E-013.02E-013.38E+003.87E+006.26E-013.75E+003.81E+00-9.14E-011.62E+011.87E+0101342-27.12/26/200812:196.13E+022.94E+022.87E+022.40E+008.61E-017.34E-01-1.95E+004.80E+004.66E+001.77E+003.90E+004.68E+001.71E+012.40E+012.67E+01 014 42-271 7/31/200815:43373E+02134E+02191E+02928E+00866E-01439E-01-940E-01199E+00320E+00953E-01191E+00344E+00158E+01176E+01296E+01 014 42-27.1 7/31/200815:43 3.73E+02 1.34E+02 1.91E+02 9.28E+00 8.66E-01 4.39E-01-9.40E-01 1.99E+00 3.20E+00 9.53E-01 1.91E+00 3.44E+00 1.58E+01 1.76E+01 2.96E+0101542-27.111/6/200810:441.29E+021.76E+021.92E+022.56E+009.87E-016.85E-011.65E+004.98E+005.77E+005.18E-015.36E+006.17E+000.00E+001.76E+012.03E+0101642-27.11/22/200915:232.15E+021.38E+021.48E+021.96E+008.06E-016.31E-01-1.74E+002.48E+002.37E+00-5.18E-012.31E+002.39E+00-3.34E+001.74E+012.03E+01MW-50-6600167-52.13/22/200614:506.81E+034.94E+022.13E+022.55E+011.21E+004.90E-01-7.67E+001.60E+011.66E+01-2.18E+001.68E+011.81E+015.33E+001.35E+011.47E+01MW-50-6600367-52.15/19/200615:201.08E+045.90E+036.30E+02NANANA3.23E+001.06E+011.23E+017.78E-011.12E+011.25E+01NANANA00367-52.15/19/200615:209.61E+031.52E+034.94E+021.95E+011.22E+005.16E-01NANANANANANANANANA 00467-52.16/7/20069:201.05E+041.65E+034.29E+021.98E+011.18E+004.66E-01-1.97E+008.71E+009.38E+002.49E+008.98E+001.04E+01NANANA 00567-52.17/3/200611:008.62E+032.00E+031.52E+032.53E+013.79E+001.67E+00-2.04E+009.54E+001.02E+014.40E-018.34E+009.23E+00NANANA 00667-52.18/1/20069:287.93E+039.36E+026.16E+02NANANA5.59E-015.98E+006.68E+00-4.31E+006.18E+005.00E+001.06E+011.06E+011.13E+01 00767-52.18/28/200612:056.77E+031.59E+031.30E+03NANANA7.66E-024.67E+005.86E+001.34E+004.23E+005.88E+00NANANA 00867-52.111/15/200610:375.05E+031.32E+031.00E+032.15E+012.34E+008.10E-012.00E-013.30E+003.70E+002.60E+003.30E+003.50E+001.50E+005.70E+006.30E+0000960-45.16/26/200714:024.21E+032.85E+021.86E+022.93E+011.86E+005.25E-01-2.19E+002.64E+002.49E+001.63E-012.36E+002.74E+00-6.05E-011.50E+011.74E+0101060-45.17/26/200711:254.50E+033.39E+022.04E+023.10E+012.50E+005.78E-01-1.12E+004.54E+004.18E+001.08E-023.46E+003.94E+001.93E+011.86E+012.02E+0101160-45.110/18/200714:383.85E+036.53E+023.62E+024.74E+013.72E+007.97E-01-2.28E+004.61E+004.36E+001.65E+004.20E+004.96E+00-3.71E+001.58E+011.83E+0101360-45.12/26/200813:463.74E+037.98E+025.31E+023.58E+012.36E+007.40E-017.87E-012.69E+003.18E+002.54E-012.54E+002.96E+004.87E+001.86E+012.12E+0101560-45.15/12/200815:402.80E+032.39E+021.44E+023.38E+011.85E+007.01E-017.08E-012.24E+003.87E+001.23E+002.13E+003.83E+007.86E+001.28E+012.17E+0101660-45.17/31/200817:022.71E+032.48E+021.91E+023.30E+011.59E+004.02E-012.31E+001.82E+003.43E+006.64E-011.46E+002.68E+003.58E+001.40E+012.43E+0101760-45.19/8/200816:212.08E+034.17E+025.04E+023.23E+011.66E+004.88E-01-8.81E-012.69E+003.96E+00NANANA1.22E+011.23E+012.06E+01 01860-45.111/6/200812:382.73E+034.17E+021.98E+023.20E+013.00E+007.41E-01-8.66E-015.97E+006.56E+00-2.52E+008.96E+008.45E+00-1.63E+002.07E+012.39E+0101960-45.111/19/200816:292.43E+032.49E+021.73E+024.99E+013.75E+008.66E-012.50E+005.26E+002.61E+005.13E-012.70E+003.17E+00-5.06E-011.98E+012.29E+0102060-45.11/22/200916:012.30E+032.16E+021.48E+022.75E+012.28E+004.07E-01-1.68E+004.20E+003.99E+00-1.97E-013.32E+003.66E+00-9.33E+001.88E+012.23E+01MW-51-4000139.7285/30/200711:451.98E+021.65E+021.68E+02-5.30E-016.73E-019.82E-011.04E-013.48E+003.77E+001.61E+003.23E+003.77E+00NANANAMW-51-40MW5140 001 39.7 28 5/30/200711:45 1.98E+02 1.65E+02 1.68E+02 5.30E01 6.73E01 9.82E01 1.04E01 3.48E+00 3.77E+00 1.61E+00 3.23E+00 3.77E+00 NA NA NAMW514000239.7287/24/200715:302.23E+021.59E+021.60E+027.09E-024.71E-015.38E-011.65E-023.39E+003.85E+00-1.32E+004.02E+004.13E+00NANANA00439.72811/9/200715:401.47E+021.55E+021.70E+02-8.16E-023.87E-014.52E-011.68E+002.96E+003.52E+00-5.71E-023.15E+003.49E+00NANANA 00539.7281/8/200810:475.86E+011.56E+021.79E+021.57E-016.77E-018.32E-011.83E-022.66E+002.93E+007.71E-012.75E+002.87E+00NANANA 00739.7285/30/200810:271.41E+021.01E+021.60E+023.71E-015.67E-019.67E-013.19E-012.03E+003.41E+002.18E+002.36E+003.50E+00NANANA 00839.7288/8/200814:403.29E+021.60E+022.03E+023.74E-014.02E-016.70E-011.59E+002.19E+003.98E+00-1.99E-011.79E+002.99E+00-8.33E+001.02E+011.83E+0100939.72810/27/200813:111.68E+021.85E+021.95E+021.84E-024.26E-015.67E-014.51E-014.28E+004.88E+00-1.93E+006.35E+006.59E+00-5.03E+002.11E+012.46E+0101039.7281/20/200914:502.37E+011.68E+021.92E+021.92E-017.95E-019.70E-019.89E-012.81E+003.26E+001.05E+002.75E+003.30E+008.95E+001.67E+011.87E+01MW-51-7900178.7-115/30/200712:429.89E+011.55E+021.72E+02-2.36E-016.98E-019.58E-012.20E+003.63E+003.90E+003.52E-013.31E+003.76E+00NANANAMW-51-7900278.7-117/24/200717:004.24E+011.43E+021.67E+028.02E-035.35E-016.15E-01-6.37E-013.88E+004.21E+00-2.83E-014.51E+004.93E+00NANAN A00478.7-1111/9/200716:185.00E+011.50E+021.71E+02-4.97E-022.99E-013.52E-012.66E+002.97E+003.56E+00-2.43E-014.02E+004.45E+00NANAN A00578.7-111/8/200810:089.26E+011.59E+021.79E+02-4.64E-017.01E-019.74E-01-7.91E-012.22E+002.42E+002.58E-012.37E+002.70E+00NANANA 00778.7-115/30/200810:556.70E+019.41E+011.61E+022.46E-024.94E-019.94E-01-1.14E+003.43E+004.80E+00-5.13E-012.70E+004.31E+00NANAN A00878.7-118/8/200812:551.61E+021.31E+022.01E+022.03E-012.99E-015.18E-019.63E-012.17E+003.82E+005.64E-012.30E+003.98E+00-1.07E+011.07E+011.93E+0100978.7-1110/27/200813:301.14E+011.62E+021.99E+023.14E-036.14E-017.85E-018.42E-015.07E+005.75E+002.41E+005.21E+006.37E+003.72E+001.77E+012.02E+0101078.7-111/20/200915:211.01E+021.33E+021.48E+02-1.71E-013.15E-015.02E-015.93E-015.57E+003.65E+00-2.94E-013.21E+003.56E+001.58E+011.73E+011.90E+01MW-51-104001103.7-365/30/200711:055.71E+011.48E+021.71E+02-6.74E-027.59E-019.90E-011.25E+003.27E+003.35E+007.70E-023.25E+003.62E+00NANANAMW-51-104002103.7-367/24/200717:069.07E+011.47E+021.64E+023.62E-014.86E-015.41E-01-4.20E+004.62E+003.92E+001.42E+004.44E+005.33E+00NANAN A004103.7-3611/9/200714:355.17E+011.50E+021.70E+02-2.40E-013.18E-013.86E-01-1.26E+002.85E+002.92E+001.15E+002.61E+003.18E+00NANA NA005103.7-361/8/200812:15-4.84E+001.45E+021.78E+02-6.19E-027.22E-019.34E-01-9.37E-012.09E+002.26E+00-3.84E-012.54E+002.50E+00NANANA006103.7-368/8/200810:502.82E+021.55E+022.08E+02-2.66E-014.00E-017.92E-011.56E+002.03E+003.60E+00-1.21E-012.07E+003.38E+00-4.19E+001.34E+012.36E+01007103.7-3610/27/200810:071.21E+021.39E+021.49E+021.19E-014.97E-016.13E-015.61E+006.81E+008.52E+00-5.72E+008.93E+008.26E+00-1.01E+001.84E+012.12E+01008103.7-361/20/200910:469.95E+011.33E+021.48E+029.07E-033.78E-015.04E-01-1.33E+002.87E+003.03E+00-1.01E+002.37E+002.42E+00-2.06E+002.00E+012.33E+01MW-51-135001135.2-67.55/30/200713:008.24E+011.50E+021.70E+02-4.68E-015.53E-018.40E-01-4.01E-013.62E+004.03E+002.56E+003.84E+004.48E+00NANANAMW-51-135002135.2-67.57/24/200712:409.51E+011.43E+021.59E+025.33E-025.04E-015.76E-01-4.56E-014.07E+004.36E+003.42E-013.30E+003.84E+00NANANA004135.2-67.511/9/200711:559.83E+011.53E+021.72E+02-2.42E-012.54E-013.18E-01-7.27E-013.46E+003.70E+00-3.14E-013.29E+003.66E+00NANANA005135.2-67.51/8/200813:204.91E+011.55E+021.80E+023.47E-027.04E-018.79E-016.30E-021.88E+002.09E+001.43E-021.71E+001.90E+00NANAN A006135.2-67.58/8/200811:502.09E+021.39E+021.99E+025.09E-022.40E-014.57E-01-1.03E+002.08E+003.29E+001.01E-022.01E+003.34E+00-6.78E+001.14E+012.02E+01007135.2-67.510/27/200810:057.68E+011.73E+021.99E+022.72E-045.05E-016.63E-01-1.74E+005.26E+005.63E+003.92E+006.09E+007.69E+00-2.05E-011.74E+012.01E+01008135.2-67.51/20/200911:021.31E+021.35E+021.48E+02-3.04E-013.41E-015.84E-01-6.92E-013.89E+004.31E+009.34E-013.06E+003.66E+00-1.08E+011.76E+012.10E+01MW-51-163001162.7-955/30/200714:401.18E+021.56E+021.69E+023.29E-011.16E+001.36E+00-2.81E-013.09E+003.45E+001.77E-012.82E+003.20E+00NANANAMW-51-163002162.7-957/24/200714:054.98E+011.44E+021.66E+021.05E-014.58E-015.21E-01-2.43E-013.44E+003.78E+008.64E-023.25E+003.63E+00NANAN A004162.7-9511/9/200713:327.30E+011.52E+021.71E+022.08E-012.82E-013.12E-011.41E-013.54E+003.51E+00-1.11E+003.01E+003.11E+00NANAN A005162.7-951/8/200813:57-1.99E+011.47E+021.82E+024.40E-018.22E-019.29E-01-1.74E+002.66E+002.46E+008.69E-022.15E+002.44E+00NANAN A006162.7-958/8/200811:166.92E+018.27E+011.40E+02-1.22E-012.63E-015.44E-01-1.54E+002.25E+003.56E+003.78E-011.97E+003.39E+004.33E+001.26E+012.15E+01007162.7-9510/27/200810:205.58E+011.67E+021.95E+022.55E-015.76E-016.67E-01-1.70E+006.18E+006.74E+005.42E-015.38E+006.25E+002.11E+001.88E+012.14E+01J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 9 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION008162.7-951/20/200911:444.60E+011.30E+021.48E+02-1.98E-014.97E-016.98E-01-9.70E-013.14E+003.27E+00-7.70E-023.24E+003.54E+00-1.01E+011.80E+012.14E+01MW-51-189001189.2-121.55/30/200714:001.87E+021.67E+021.71E+02-2.88E-028.90E-011.11E+00-3.62E-023.98E+003.82E+004.56E+003.57E+004.63E+00NANANAMW-51-189002189.2-121.57/24/200713:159.49E+011.46E+021.63E+023.93E-014.08E-014.48E-01-8.87E-014.11E+003.58E+001.57E+004.02E+004.31E+00NANANA003189.2-121.510/2/200712:208.45E+001.70E+021.96E+02-5.06E-022.16E-012.58E-011.38E+015.45E+002.92E+00-4.14E-012.79E+003.04E+00NANANA004189.2-121.511/9/200713:05-6.26E+001.48E+021.71E+021.93E-013.61E-014.08E-013.04E+003.27E+004.07E+00-8.07E-023.65E+004.05E+00NANANA005189.2-121.51/8/200813:10-4.82E+001.44E+021.77E+02-3.17E-027.01E-018.92E-011.35E+002.13E+002.49E+001.42E+001.98E+002.41E+00NANANA006189.2-121.58/8/200811:171.10E+028.97E+011.43E+02-1.43E-013.38E-016.60E-01-2.27E+002.13E+003.12E+00-1.79E+002.70E+003.57E+00-5.89E+001.15E+012.04E+01007189.2-121.510/27/200810:117.69E+011.74E+021.99E+025.61E-017.16E-017.51E-016.11E-016.38E+007.30E+003.04E+006.13E+007.60E+00-6.95E+001.84E+012.17E+01008189.2-121.51/20/200911:333.32E+011.30E+021.48E+02-2.14E-013.45E-015.59E-01-2.05E+003.48E+003.62E+001.91E+003.32E+004.20E+00-8.33E+001.79E+012.11E+01MW-52-11001106.86/20/200712:351.47E+021.68E+021.84E+02-3.58E-016.33E-018.33E-011.96E+002.54E+002.99E+006.12E-012.29E+002.65E+00-4.56E+001.28E+011.54E+01MW-52-11002106.88/6/200716:187.71E+011.73E+021.94E+02-5.43E-016.12E-019.38E-01-2.16E+003.42E+003.23E+003.39E-022.79E+003.12E+00NANANA003106.84/28/200813:231.13E+031.53E+021.96E+021.97E-014.73E-018.46E-015.19E-011.93E+003.36E+00-2.15E+003.52E+004.08E+00NANANAMW-52-1800117.5-2.65/24/200710:441.62E+021.52E+021.65E+02-2.20E-014.98E-017.30E-016.53E-013.19E+003.74E+003.13E+003.30E+004.22E+00-1.09E+009.82E+001.14E+01MW-52-1800217.5-2.68/6/200713:456.73E+011.74E+021.96E+02-7.91E-026.92E-018.93E-01-1.43E+003.54E+003.67E+001.11E-013.15E+003.54E+00NANAN A MW-52-48 001 48-331 5/24/200711:35702E+01148E+02167E+02-361E-01744E-01101E+00366E-01294E+00339E+00-991E-01303E+00311E+00-274E+00816E+00955E+00 MW-52-48 MW-52-48 001 48-33.1 5/24/200711:35 7.02E+01 1.48E+02 1.67E+02-3.61E-01 7.44E-01 1.01E+00 3.66E-01 2.94E+00 3.39E+00-9.91E-01 3.03E+00 3.11E+00-2.74E+00 8.16E+00 9.55E+00 MW-52-4800248-33.18/6/200714:001.15E+021.76E+021.96E+02-5.59E-014.83E-017.33E-017.85E-013.24E+003.75E+004.31E-013.29E+003.75E+00NANANAMW-52-6400164-49.15/24/200714:443.82E+001.70E+021.98E+02-3.20E-017.68E-019.77E-01-1.03E+003.25E+003.45E+008.00E-013.54E+004.11E+00-2.85E+009.12E+001.07E+01MW-52-6400264-49.18/6/200715:503.72E+011.71E+021.96E+02-1.70E-027.22E-019.23E-015.10E-013.50E+003.68E+001.80E+006.08E+004.12E+00NANANAMW-52-122001122-107.15/24/200714:556.78E+011.47E+021.66E+02-4.24E-016.62E-019.64E-012.52E+003.59E+003.62E+00-1.76E+003.38E+003.29E+00-1.94E+009.68E+001.13E+01MW-52-122002122-107.18/6/200712:054.42E+011.71E+021.96E+02-4.19E-017.10E-019.60E-011.99E+004.09E+004.34E+002.10E-014.13E+004.70E+00NANAN A003122-107.14/28/200815:238.87E+018.60E+011.44E+021.21E-012.92E-015.22E-01-1.25E+002.05E+003.24E+002.72E+002.38E+004.52E+00NANA NAMW-52-162001161.5-146.65/24/200711:552.82E+021.95E+022.03E+02-5.15E-014.87E-018.12E-01-5.80E-013.59E+003.29E+001.59E+003.15E+003.88E+00-7.54E-019.75E+001.13E+01MW-52-162002161.5-146.68/6/200711:302.11E+021.80E+021.95E+021.53E-024.79E-016.03E-013.61E-023.44E+003.77E+00-3.73E-023.12E+003.52E+00NANANA003161.5-146.64/28/200810:221.45E+028.73E+011.43E+021.03E+003.62E-014.43E-01-9.14E-012.03E+003.31E+002.33E+002.13E+004.14E+00NANANAMW-52-181001181-166.15/24/200712:062.48E+021.94E+022.04E+02-3.19E-015.07E-017.58E-01-5.99E-013.30E+003.52E+00-2.81E-013.74E+004.19E+00-2.23E-011.01E+011.17E+01MW-52-181002181-166.18/6/200711:401.19E+021.77E+021.97E+025.84E-025.56E-016.77E-01-1.21E+002.87E+002.97E+001.28E+002.96E+003.57E+00NANAN A003181-166.14/29/200810:241.56E+028.77E+011.44E+021.62E-012.46E-014.28E-011.08E+002.25E+003.96E+004.11E-012.12E+003.63E+00NANAN 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Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 10 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE 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0051725-1594 5/2/200810:35211E+03210E+02142E+02122E+01118E+00906E-01-644E-01222E+00366E+00171E+00210E+00401E+00447E+00123E+01210E+01 005 172.5-159.4 5/2/200810:35 2.11E+03 2.10E+02 1.42E+02 1.22E+01 1.18E+00 9.06E-01-6.44E-01 2.22E+00 3.66E+00 1.71E+00 2.10E+00 4.01E+00 4.47E+00 1.23E+01 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Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 11 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE 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Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 12 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE 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A00314.90.710/11/200712:431.49E+021.56E+021.71E+023.08E-016.23E-017.12E-011.52E+002.63E+003.16E+00-1.41E-012.52E+002.74E+00NANAN A00414.90.71/9/200814:551.23E+021.56E+021.73E+02-6.34E-025.55E-017.38E-012.55E+003.29E+003.42E+001.97E+002.94E+003.75E+00NANANA 00514.90.74/23/200814:502.57E+021.53E+022.43E+022.31E-024.68E-018.62E-018.04E-012.35E+004.03E+007.68E-012.06E+003.69E+008.53E+001.43E+012.42E+0100614.90.77/30/200811:131.79E+021.20E+021.91E+023.29E+005.61E-014.68E-01-1.71E-021.75E+002.97E+00-1.16E+002.04E+002.49E+00NANAN A00714.90.711/5/200810:533.20E+021.59E+021.65E+023.25E-016.20E-017.03E-011.31E-015.91E+006.75E+00-1.52E+005.73E+006.04E+00NANANA 00814.90.71/29/200913:461.54E+021.85E+021.98E+02-2.22E-016.74E-018.57E-019.78E-022.64E+003.01E+001.02E+003.20E+003.87E+00NANANAMW-63-3400131.5-17.35/18/200713:032.28E+021.58E+021.55E+02-1.62E-015.43E-017.77E-014.10E-012.21E+002.51E+00-3.25E-012.65E+002.44E+001.57E+001.54E+011.80E+01MW-63-3400231.5-17.37/30/200713:282.80E+021.77E+021.90E+02-1.64E-013.36E-014.03E-011.73E-013.66E+003.56E+003.98E-013.66E+004.24E+00NANA NA00331.5-17.310/11/200712:502.31E+021.61E+021.74E+02-2.75E-014.44E-016.73E-01-6.24E-013.60E+003.58E+003.81E-012.65E+003.10E+00NANANA00431.5-17.31/9/200814:203.26E+021.65E+021.71E+021.24E-015.57E-016.84E-011.83E+003.63E+004.44E+003.53E-013.90E+004.35E+00NANANA00531.5-17.34/23/200813:554.90E+021.68E+022.45E+023.82E-015.68E-019.89E-011.71E+002.05E+003.78E+00-1.77E+003.53E+004.19E+005.77E+001.46E+012.49E+01J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 13 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION00631.5-17.37/30/200811:124.41E+021.39E+021.91E+021.15E+004.60E-016.45E-01-1.48E-022.26E+003.87E+00-7.91E-012.52E+003.65E+00NANANA00731.5-17.311/5/200811:034.14E+023.77E+023.85E+023.15E-016.77E-017.78E-015.73E-015.43E+006.10E+00-1.40E-015.17E+005.67E+00NANA NA00831.5-17.31/29/200912:224.20E+022.22E+021.96E+022.20E-016.87E-018.13E-011.41E+002.91E+003.45E+00-2.64E-012.96E+003.23E+00NANA NAMW-63-5000149.5-37.25/15/200711:483.26E+021.83E+021.73E+02-9.70E-026.15E-018.32E-01-1.33E-015.28E+005.01E+006.64E-014.23E+004.81E+00-2.41E+001.24E+011.51E+01MW-63-5000249.5-37.27/25/200714:002.25E+021.80E+021.95E+021.29E-016.03E-016.84E-012.08E+003.18E+003.90E+00-1.58E-013.19E+003.54E+00NANA NA00349.5-37.210/11/200711:102.89E+021.62E+021.73E+02-3.41E-015.10E-017.67E-016.21E-012.98E+003.39E+001.56E+003.17E+003.86E+00NANANA00449.5-37.21/9/200812:323.56E+021.67E+021.72E+024.48E-017.41E-018.26E-013.37E-012.66E+003.02E+00-1.42E+003.14E+003.20E+00NANAN A00549.5-37.24/23/200813:042.70E+021.63E+022.65E+024.27E-015.45E-019.26E-01-1.10E+001.85E+002.93E+009.01E-011.75E+003.27E+002.43E+001.40E+012.41E+0100649.5-37.27/30/200810:293.35E+021.32E+021.91E+026.10E-014.97E-018.02E-01-1.77E+001.83E+002.66E+00-1.22E+001.91E+002.80E+00NANANA00749.5-37.211/5/20089:393.17E+021.94E+021.99E+025.67E-016.58E-016.79E-011.26E+006.36E+007.04E+00-7.21E-016.52E+007.08E+00NANAN A00849.5-37.21/29/200914:062.98E+022.04E+021.96E+025.67E-018.00E-018.76E-018.89E-023.09E+003.51E+001.37E+003.41E+004.19E+00NANAN AMW-63-9300193-80.710/2/200613:105.16E+021.95E+025.70E+017.81E-026.73E-017.32E-015.46E-011.43E+011.59E+01-4.42E+001.67E+012.03E+01-5.31E+001.23E+011.54E+01MW-63-9300293-80.75/15/200712:452.81E+021.80E+021.75E+028.20E-027.29E-019.24E-011.87E-014.80E+004.60E+009.57E-014.54E+004.51E+00NANANA00393-80.77/25/200714:342.37E+021.82E+021.97E+02-4.43E-014.41E-015.29E-011.24E+003.31E+003.90E+009.28E-033.75E+004.16E+00NANANA 004 93-807 10/11/200711:17115E+02155E+02172E+02819E-01890E-01947E-01-698E-01297E+00316E+00-177E+00333E+00323E+00 NA NA NA 004 93-80.7 10/11/200711:17 1.15E+02 1.55E+02 1.72E+02 8.19E-01 8.90E-01 9.47E-01-6.98E-01 2.97E+00 3.16E+00-1.77E+00 3.33E+00 3.23E+00 NA NA NA00593-80.71/9/200812:462.15E+021.59E+021.71E+021.86E-017.08E-018.45E-017.74E-013.06E+003.56E+001.05E-013.20E+003.58E+00NANANA 00593-80.74/23/200811:233.02E+021.65E+022.65E+022.93E-015.46E-019.39E-013.49E-012.27E+003.88E+007.04E-012.41E+004.14E+00-3.72E+001.41E+012.46E+0100793-80.77/29/200814:172.38E+021.25E+021.92E+022.28E-032.21E-013.86E-01-4.02E-012.01E+003.36E+00-3.19E-011.96E+003.23E+00NANAN A00893-80.711/5/200810:143.90E+023.75E+023.86E+02-9.77E-021.94E-012.36E-011.53E+005.10E+005.92E+002.80E+006.24E+007.60E+00NANANA 00993-80.71/29/200914:203.40E+022.09E+021.93E+021.18E-016.33E-017.75E-01-9.44E-013.17E+003.42E+00-8.17E-013.63E+003.88E+00NANAN AMW-63-112001111.5-99.25/15/200713:104.24E+021.95E+021.75E+02-5.27E-027.50E-019.42E-012.58E+003.90E+003.59E+009.59E-013.72E+004.19E+00-5.14E+001.34E+011.55E+01MW-63-112002111.5-99.27/25/200714:522.69E+021.83E+021.97E+026.32E-023.46E-013.99E-016.92E-014.14E+004.19E+00-6.35E-013.94E+004.34E+00NANANA003111.5-99.210/11/200713:452.78E+021.62E+021.72E+02-7.94E-026.73E-018.71E-01-3.04E+005.49E+004.52E+007.65E-013.50E+004.15E+00NANANA004111.5-99.21/9/200810:204.69E+021.73E+021.72E+022.19E-015.07E-015.92E-013.90E-013.30E+003.34E+002.87E-013.56E+003.75E+00NANAN A005111.5-99.24/23/200811:083.72E+021.68E+022.65E+02-3.90E-023.96E-017.94E-014.77E-012.30E+003.89E+001.75E+002.78E+004.52E+00-5.00E-011.43E+012.48E+01006111.5-99.27/29/200814:202.07E+021.01E+021.63E+027.08E-015.39E-018.66E-016.61E-012.23E+003.89E+001.07E+002.46E+004.41E+00NANA 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Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 14 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE 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NAMW67340002339.8-327.310/1/200714:003.90E+021.92E+021.96E+021.42E-013.71E-014.20E-017.29E-013.46E+003.96E+00-1.22E+003.33E+003.50E+003.89E+001.54E+011.76E+01004339.8-327.32/25/200812:004.78E+022.82E+022.86E+02-2.17E-015.53E-016.94E-01-1.58E+003.99E+003.94E+00-7.62E-013.19E+003.43E+005.72E+001.83E+012.09E+01005339.8-327.37/28/200811:185.11E+029.36E+011.30E+02-3.39E-012.28E-015.49E-013.13E-012.21E+003.81E+009.03E-012.25E+003.68E+00-6.94E+001.57E+012.78E+01006339.8-327.311/3/200811:546.69E+022.22E+021.63E+028.08E-024.26E-015.43E-012.23E+006.25E+007.45E+003.65E+006.76E+008.47E+00-8.34E+001.59E+011.88E+01007339.8-327.31/27/200912:445.23E+024.37E+024.39E+022.57E-015.48E-016.31E-014.72E-013.72E+004.19E+00-4.00E-013.41E+003.67E+007.78E+001.68E+011.90E+01MW-10700429.11119/28/200512:003.09E+023.87E+024.20E+02NANANA3.86E+001.16E+018.53E+00NANANANANANAMW-10700129.111112/8/200511:151.28E+024.11E+024.54E+027.65E+001.53E+011.33E+012.55E+007.64E+005.59E+004.11E+001.23E+018.97E+00NANANA00229.11114/18/200611:151.27E+024.11E+024.51E+020.00E+003.90E-014.40E-012.65E+007.94E+005.62E+004.36E+001.31E+019.21E+00NANANA 00329.11116/6/200613:301.05E+021.53E+021.56E+02-2.07E-015.43E-017.13E-011.65E+008.31E+009.24E+00-3.66E-018.36E+009.05E+00NANANA 00532.7110.17/23/200714:188.92E+011.52E+021.70E+021.66E-015.19E-015.87E-018.13E-012.73E+001.60E+001.03E-011.41E+001.60E+00NANAN A00632.7110.14/24/200815:411.91E+028.90E+011.44E+02-6.22E-022.21E-014.42E-01-2.03E+002.78E+004.11E+00-1.38E+002.12E+003.07E+00NANANA00732.7110.15/30/200815:254.62E+019.02E+011.58E+026.62E-025.51E-019.60E-011.22E+001.88E+003.36E+005.48E-012.20E+003.57E+00NANAN AMW-1080038.36.29/29/200512:003.32E+023.84E+024.20E+02NANANA3.23E+009.70E+007.39E+003.21E+009.64E+007.84E+00NANANAMW-1080048.36.211/3/200512:001.97E+024.26E+024.76E+02NANANA3.41E+001.02E+017.53E+002.65E+007.95E+006.39E+00NANANA0028.36.25/13/200610:532.78E+021.82E+021.68E+026.89E-018.26E-018.08E-013.12E+008.86E+001.05E+01-1.45E-011.23E+011.34E+01NANANAMW-1090038.56.19/29/200512:001.54E+023.81E+024.20E+02NANANA3.74E+001.12E+018.45E+003.19E+009.57E+007.88E+00NANANAMW-1090048.56.111/3/200512:001.01E+024.23E+024.76E+02NANANA3.59E+001.08E+017.89E+002.59E+007.78E+006.26E+00NANANA0028.56.15/13/200610:103.39E+021.89E+021.70E+022.98E-018.24E-019.27E-012.00E-015.68E+006.24E+00-2.50E+006.12E+006.08E+00NANANAMW-11100114.14.89/29/200510:002.15E+052.26E+034.20E+02NANANA4.48E+001.34E+011.02E+011.81E+005.42E+005.57E+00NANANAMW-111 00114.14.89/29/200510:002.05E+052.56E+046.24E+02NANANANANANANANANANANANA 00214.14.810/14/200510:006.81E+034.73E+036.41E+02NANANANANANANANANANANANA 00314.14.810/21/200510:002.84E+053.05E+046.41E+02NANANANANANANANANANANANA 00414.14.810/28/20058:302.18E+056.54E+037.00E+02NANANANANANANANANANANANA 00514.14.811/4/20059:003.02E+059.06E+037.00E+02NANANANANANANANANANANANA 00614.14.811/22/200510:001.80E+055.40E+037.00E+02NANANANANANANANANANANANA 00714.14.812/2/200510:151.25E+053.75E+037.00E+02NANANANANANANANANANANANA 00814.14.812/8/200516:502.71E+058.13E+037.00E+02NANANANANANANANANANANANA 00914.14.812/15/200511:002.96E+058.88E+037.00E+02NANANANANANANANANANANANA 01014.14.812/19/20059:451.92E+055.76E+037.00E+02NANANANANANANANANANANANA 01114.14.812/29/200510:002.12E+056.36E+037.00E+02NANANANANANANANANANANANA 01214.14.81/6/200610:451.13E+053.39E+037.00E+02NANANANANANANANANANANANA 01314.14.81/13/200610:301.99E+055.97E+037.00E+02NANANANANANANANANANANANA 01414.14.81/20/20069:301.19E+053.57E+037.00E+02NANANANANANANANANANANANA 01514.14.81/27/200610:055.78E+051.73E+027.00E+02NANANANANANANANANANANANA01614.14.82/3/200612:202.95E+053.09E+046.33E+02NANANANANANANANANANANANAJ:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 15 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION01714.14.82/7/200616:102.38E+052.78E+046.37E+021.17E+006.03E-016.31E-01NANANANANANANANANA 01814.14.82/16/200613:402.94E+053.09E+046.36E+02NANANANANANANANANANANANA 01914.14.83/3/20069:002.36E+057.08E+037.00E+02NANANANANANANANANANANANA 02014.14.84/7/20069:501.45E+054.35E+037.00E+02NANANANANANANANANANANANA 02114.14.85/17/200614:054.31E+046.51E+039.10E+022.49E+001.40E+001.24E+00-2.32E-011.34E+011.51E+014.25E+001.30E+011.49E+01NANANA 02214.14.86/23/20068:352.62E+053.92E+042.35E+036.23E-011.07E+001.32E+00-4.18E+001.40E+011.46E+01-1.60E-011.38E+011.52E+01NANANA 02314.14.89/21/200610:251.59E+052.07E+041.42E+038.79E-011.25E+001.33E+009.50E-021.13E+001.26E+00-6.26E-021.15E+001.24E+00NANANA02416.52.46/15/200714:171.19E+053.69E+033.52E+029.74E-016.30E-015.76E-01-7.53E-013.27E+003.00E+001.21E-012.79E+003.17E+006.34E+001.26E+011.43E+0102516.52.48/3/20079:539.88E+042.93E+033.68E+029.74E-016.73E-016.27E-014.24E-012.75E+003.15E+003.95E-012.60E+003.02E+00NANANA 02616.52.41/28/200811:384.77E+041.77E+032.97E+022.56E+009.45E-016.18E-012.60E+004.05E+003.90E+00-6.32E-012.55E+002.63E+001.33E+011.58E+011.73E+0102716.52.49/4/200814:007.39E+041.89E+035.47E+021.02E+003.62E-014.21E-01-8.16E-012.22E+003.61E+01NANANANANANA 02816.52.410/21/200814:206.64E+042.00E+032.60E+029.08E-019.32E-019.72E-01-9.35E-013.60E+003.79E+005.10E-014.32E+005.03E+00NANAN AU3-4D00721.7-14.710/16/200512:003.70E+024.05E+024.38E+02NANANA4.72E+001.41E+011.01E+013.72E+001.12E+018.50E+00NANANAU3-4D00821.7-14.710/21/200512:003.99E+023.90E+024.27E+02NANANA3.11E+009.34E+006.58E+002.98E+008.95E+006.58E+00NANANA 009217-147 10/28/200512:00405E+02429E+02472E+02 NA NA NA391E+00117E+01854E+00436E+00131E+01984E+00 NA NA NA 009 21.7-14.7 10/28/200512:00 4.05E+02 4.29E+02 4.72E+02 NA NA NA 3.91E+00 1.17E+01 8.54E+00 4.36E+00 1.31E+01 9.84E+00 NA NA NA01221.7-14.711/18/200512:001.10E+024.35E+024.81E+02NANANA3.04E+009.13E+006.67E+002.04E+006.11E+004.97E+00NANANA01321.7-14.712/2/200512:002.73E+024.23E+024.64E+02NANANA2.97E+008.92E+006.62E+002.00E+006.01E+005.05E+00NANANA 00121.7-14.712/15/200513:103.99E+024.32E+024.70E+02NANANA2.73E+008.20E+006.05E+002.88E+008.64E+006.66E+00NANANA 00221.7-14.712/30/20059:254.42E+024.35E+024.71E+02NANANA3.53E+001.06E+017.76E+003.96E+001.19E+018.99E+00NANANA 00321.7-14.71/12/200611:005.73E+024.38E+024.72E+02NANANA3.29E+009.86E+007.12E+003.42E+001.03E+017.75E+00NANANA 00421.7-14.72/15/200613:452.71E+029.39E+026.36E+02NANANANANANANANANANANANA 00621.7-14.74/26/200614:205.75E+022.19E+021.87E+02-1.48E-016.11E-017.91E-01-3.01E-018.38E+009.11E+00-3.10E+008.21E+008.71E+00NANANA01421.7-14.76/22/200610:207.10E+022.15E+021.68E+021.27E-015.73E-017.39E-01-2.41E+001.15E+011.21E+01-2.08E+008.42E+008.34E+00NANANA01525.6-10.82/1/200812:403.75E+021.36E+021.35E+02-1.78E-017.83E-019.77E-012.83E-012.69E+003.10E+001.41E+003.26E+003.97E+00NANAN A01625.6-10.84/29/200813:273.19E+021.43E+022.22E+021.44E-012.76E-014.94E-015.15E-011.91E+003.36E+00-1.53E-011.73E+002.91E+00NANA NA01725.6-10.87/28/200816:464.66E+022.50E+023.79E+02-3.57E-014.96E-019.81E-012.89E-012.08E+003.62E+004.78E-012.36E+003.69E+00NANA NA01825.6-10.810/20/200814:405.68E+021.71E+021.64E+02-8.59E-028.61E-011.11E+003.53E-014.62E+005.17E+007.12E-014.13E+004.79E+00NANANA01025.6-10.811/4/200812:001.18E+024.23E+024.76E+02NANANA3.17E+009.51E+006.90E+003.34E+001.00E+017.54E+00NANANA 01125.6-10.811/10/200812:003.16E+024.14E+024.61E+02NANANA4.10E+001.23E+018.95E+004.07E+001.22E+019.41E+00NANANA 01925.6-10.82/10/200914:154.82E+022.31E+021.97E+021.00E-015.16E-016.41E-013.86E-012.66E+003.00E+007.53E-013.02E+003.39E+00NANAN AU3-T1 60075.72.810/7/200512:001.59E+034.20E+024.15E+02NANANA2.71E+008.14E+006.09E+002.77E+008.30E+006.55E+00NANANAU3-T160085.72.810/21/200512:003.09E+023.87E+024.27E+02NANANA3.92E+001.18E+018.66E+003.87E+001.16E+019.03E+00NANANA0095.72.810/28/200512:003.40E+024.29E+024.72E+02NANANA3.55E+001.06E+018.06E+005.35E+001.61E+011.23E+01NANANA 0105.72.811/4/200512:001.97E+024.29E+024.76E+02NANANA4.01E+001.20E+018.86E+003.90E+001.17E+019.13E+00NANANA 0115.72.811/10/200512:005.63E+024.26E+024.61E+02NANANA3.11E+009.32E+006.89E+002.97E+008.92E+006.99E+00NANANA 012 57 28 11/18/200512:00000E+00429E+02481E+02 NA NA NA390E+00117E+01839E+00340E+00102E+01771E+00 NA NA NA 012 5.7 2.8 11/18/200512:00 0.00E+00 4.29E+02 4.81E+02 NA NA NA 3.90E+00 1.17E+01 8.39E+00 3.40E+00 1.02E+01 7.71E+00 NA NA NA0135.72.812/2/200512:004.98E+024.29E+024.64E+02NANANA2.80E+008.39E+006.23E+002.94E+008.83E+006.86E+00NANANA 0015.72.812/15/200513:153.40E+024.29E+024.70E+02NANANA2.53E+007.60E+005.63E+002.89E+008.67E+006.65E+00NANANA 0025.72.812/30/200510:405.29E+024.38E+024.71E+02NANANA4.02E+001.21E+018.71E+004.07E+001.22E+019.17E+00NANANA 0035.72.81/12/20069:507.87E+024.47E+024.72E+02NANANA3.10E+009.31E+006.88E+002.83E+008.49E+006.70E+00NANANA 0045.72.82/15/200613:158.35E+021.65E+036.36E+02NANANANANANANANANANANANA 0055.72.83/16/200611:501.26E+032.79E+021.85E+026.55E-018.43E-018.29E-011.06E+005.49E+006.18E+00-1.81E-015.63E+006.14E+00NANANA 0065.72.85/26/200613:307.32E+022.33E+021.89E+021.27E+001.02E+001.01E+001.21E+008.34E+009.42E+005.99E+008.98E+001.15E+01NANANA 0145.72.87/12/200612:506.84E+022.36E+021.98E+023.36E-011.36E+001.44E+001.15E+001.13E+011.18E+01-1.14E+001.18E+011.26E+01NANANA 0155.72.88/15/200611:307.66E+022.25E+021.73E+02NANANA-4.04E+006.82E+006.33E+002.15E+006.84E+008.29E+00NANANA 0165.72.86/12/200712:545.06E+024.25E+024.39E+026.25E-018.75E-019.54E-01-8.51E-022.94E+002.22E+007.17E-012.00E+002.33E+00-1.46E+001.40E+011.63E+010175.72.88/1/200713:204.90E+023.38E+022.73E+025.21E-025.13E-016.47E-018.49E-013.57E+004.15E+002.88E-013.42E+003.92E+00NANANA 0185.72.810/22/200716:135.30E+024.01E+024.01E+023.41E-015.49E-016.09E-01-1.08E+003.44E+003.64E+00-1.34E+003.52E+003.68E+00NANAN A0195.72.81/22/200816:117.29E+023.27E+022.96E+026.26E-017.26E-017.69E-011.21E+003.14E+003.76E+00-1.79E-013.56E+003.93E+008.87E+001.85E+012.09E+010195.72.81/22/200816:116.05E+023.15E+022.97E+026.43E-017.41E-017.79E-011.11E+002.75E+003.21E+002.38E-012.51E+002.75E+001.14E+011.65E+011.84E+010205.72.85/2/200815:247.09E+021.63E+022.22E+027.24E-015.19E-018.26E-012.85E-011.84E+003.19E+00-1.15E+001.87E+002.82E+00NANANA 0215.72.87/23/200811:165.56E+022.58E+023.79E+026.40E-015.19E-018.37E-012.41E+002.24E+004.18E+006.54E-012.44E+004.01E+00NANANA 0225.72.810/20/200810:195.99E+025.63E+025.91E+027.01E-015.47E-015.20E-012.51E+006.27E+007.46E+001.51E+006.24E+007.35E+00NANANA 0235.72.81/28/200912:006.75E+022.48E+022.04E+021.04E+007.47E-017.44E-01-1.53E+003.59E+002.95E+00-6.63E-012.30E+002.48E+00NANANAU3-T20125.72.610/7/200512:007.03E+023.93E+024.15E+02NANANA3.67E+001.10E+018.06E+004.13E+001.24E+019.39E+00NANANAU3-T20135.72.610/21/200512:001.47E+033.63E+024.27E+02NANANA3.33E+001.00E+017.23E+003.00E+009.00E+006.90E+00NANANA 014 57 26 10/28/200512:00128E+03456E+02472E+02 NA NA NA344E+00103E+01767E+00428E+00128E+01989E+00 NA NA NA 014 5.7 2.6 10/28/200512:00 1.28E+03 4.56E+02 4.72E+02 NA NA NA 3.44E+00 1.03E+01 7.67E+00 4.28E+00 1.28E+01 9.89E+00 NA NA NA0155.72.611/4/200512:001.19E+034.59E+024.76E+02NANANA3.41E+001.02E+017.53E+003.86E+001.16E+018.81E+00NANANA0165.72.611/10/200512:001.64E+034.59E+024.61E+02NANANA3.81E+001.14E+018.34E+003.98E+001.19E+019.09E+00NANANA 0175.72.611/18/200512:001.13E+034.65E+024.81E+02NANANA3.97E+001.19E+018.70E+004.15E+001.25E+019.55E+00NANANA 0185.72.612/2/200512:001.33E+034.56E+024.64E+02NANANA2.31E+006.92E+005.23E+002.58E+007.74E+006.11E+00NANANA 0015.72.612/15/200513:301.29E+034.62E+024.70E+02NANANA2.77E+008.30E+006.09E+002.85E+008.55E+006.57E+00NANANA 0025.72.612/30/200510:501.69E+034.74E+024.71E+02NANANA3.81E+001.14E+018.46E+003.49E+001.05E+018.31E+00NANANA 0035.72.61/6/20068:452.42E+034.92E+024.66E+02NANANA2.86E+008.57E+006.56E+004.04E+001.21E+019.38E+00NANANA 0045.72.61/13/200613:201.78E+034.77E+024.72E+02NANANA4.01E+001.20E+018.74E+003.41E+001.02E+017.94E+00NANANA 0055.72.61/20/200611:001.75E+034.56E+024.61E+02NANANA3.40E+001.02E+017.71E+003.27E+009.82E+007.99E+00NANANA 0065.72.61/25/200611:102.32E+034.86E+024.61E+02NANANA3.96E+001.19E+018.77E+003.17E+009.50E+007.64E+00NANANA 0075.72.62/1/200611:152.13E+034.80E+024.60E+02NANANA3.17E+009.51E+007.02E+003.47E+001.04E+017.99E+00NANANA 0095.72.62/17/20069:201.92E+032.50E+036.36E+02NANANANANANANANANANANANA 0105.72.63/16/200612:001.69E+033.36E+022.04E+025.87E-019.21E-011.00E+00-7.43E-016.36E+006.83E+00-1.22E-016.33E+006.88E+00NANANA0115.72.65/26/200613:151.90E+033.86E+022.48E+021.49E+001.11E+001.01E+001.64E+001.01E+011.22E+015.67E+009.40E+001.25E+01NANANAJ:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 16 of 17See Page 17 for Notes TABLE 5 HISTORIC GROUNDWATER ANALYTICAL RESULTSINDIAN POINT ENERGY CENTERBUCHANAN, NYDateTimeResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCResultStd. Dev.MDCWell ID 1TRITIUM ( pCi/L)Sr-90 (pCi/L)Cs-137 (pCi/L)Co-60 (pCi/L)Ni-63 (pCi/L)ANALYSIS RESULTSWell ID 1SAMPLE IDSAMPLE ZONE CENTER, depth ft below top of casing 2SAMPLE ZONE CENTER, elevation ft msl 2SAMPLE COLLECTION0195.72.67/12/200612:251.83E+033.78E+022.54E+027.24E-011.72E+001.80E+002.58E+006.90E+008.07E+001.30E+006.69E+007.74E+00NANANA0205.72.68/15/200610:301.58E+037.79E+027.72E+02NANANA-8.87E-017.17E+007.64E+003.29E+009.10E+001.14E+01NANANA0215.72.66/12/20079:251.45E+035.19E+024.36E+02-3.89E-017.05E-019.59E-012.03E-012.29E+002.54E+00-1.00E-012.42E+002.74E+005.88E+001.39E+011.57E+010225.72.68/1/200714:141.25E+034.62E+022.55E+02-4.84E-025.37E-017.11E-01-1.75E+003.23E+003.20E+001.99E-023.54E+004.00E+00NANANA 0235.72.610/22/200715:071.17E+034.76E+024.02E+022.36E-015.28E-016.08E-01-7.13E-022.82E+003.11E+002.53E+003.50E+023.81E+00NANANA 0245.72.61/22/200816:161.33E+033.83E+022.97E+024.31E-018.54E-019.63E-017.39E-012.97E+003.39E+00-1.14E+003.39E+002.86E+002.78E+001.62E+011.89E+010255.72.65/2/200814:441.02E+031.77E+022.22E+026.52E-013.31E-014.70E-015.80E-012.06E+003.53E+007.90E-011.63E+003.00E+00NANANA 0265.72.67/23/200813:409.97E+022.85E+023.64E+025.90E-015.19E-018.44E-013.57E-021.72E+002.93E+00-1.02E+002.44E+003.39E+00NANANA 0275.72.610/20/200810:369.28E+025.97E+025.90E+024.73E-014.95E-014.85E-01-4.68E-014.82E+005.31E+00-5.02E+006.54E+006.06E+00NANAN A0285.72.61/28/200911:401.11E+032.87E+022.04E+026.04E-016.41E-016.75E-017.10E-012.42E+002.74E+004.09E-012.30E+002.61E+00NANANAU1-CSS001146.11/30/200711:451.76E+036.00E+025.70E+021.95E+012.19E+001.70E+007.00E-011.32E+001.40E+00-3.20E-011.38E+001.60E+001.64E+012.67E+012.90E+01U1-CSS002146.12/27/200711:244.32E+036.90E+025.70E+021.38E+012.31E+002.10E+001.11E+001.95E+002.10E+007.00E-011.95E+002.20E+00-1.30E+002.55E+012.90E+01003146.16/13/200711:391.53E+035.25E+024.35E+021.45E+011.91E+006.24E-018.50E-013.57E+004.15E+002.82E+004.28E+004.93E+004.42E+001.95E+012.22E+01004146.18/6/200715:552.80E+032.81E+021.95E+022.68E+012.33E+005.71E-012.53E+004.30E+004.61E+002.48E+006.84E+004.17E+00NANANA 005 14 61 1/15/200814:54495E+02204E+02176E+02773E+00131E+00691E-01285E+00656E+00336E+00-688E-02333E+00371E+00 NA NA NA 005 14 6.1 1/15/200814:54 4.95E+02 2.04E+02 1.76E+02 7.73E+00 1.31E+00 6.91E-01 2.85E+00 6.56E+00 3.36E+00-6.88E-02 3.33E+00 3.71E+00 NA NA NA006146.14/23/200815:251.77E+031.96E+021.44E+026.74E+009.01E-017.19E-01-1.36E+002.12E+003.20E+00-7.61E-012.08E+003.16E+00NANANA 007146.15/12/200814:056.88E+021.35E+021.42E+024.83E+008.35E-019.25E-012.59E+002.30E+004.25E+003.09E-012.58E+003.96E+00-2.18E+001.19E+012.08E+01008146.19/8/200810:241.45E+033.77E+024.98E+029.38E+009.40E-015.43E-011.90E+002.07E+003.76E+00NANANANANANA 009146.111/6/200814:482.66E+033.86E+021.66E+026.74E+001.20E+005.33E-013.52E+006.01E+007.29E+00-1.94E+006.45E+006.67E+001.02E+011.65E+011.85E+01010146.111/19/200813:502.20E+032.33E+021.62E+029.08E+001.38E+005.80E-012.35E+004.04E+004.98E+008.56E-014.63E+005.37E+00NANANAU1-NCD0015/8/20089:459.50E+033.49E+021.96E+023.97E+022.58E+003.57E-01NANANANANANANANANAU1-NCD00210/15/200812:356.19E+033.71E+021.61E+024.35E+025.89E+003.33E-01NANANANANANANANANA 0031/12/200913:452.13E+032.48E+021.92E+024.64E+028.90E+006.61E-012.84E+042.63E+031.22E+017.66E-012.37E+002.80E+006.41E+024.11E+011.89E+01U1-SFDS0014/9/20088:556.28E+021.41E+021.97E+029.98E+004.86E-014.31E-01NANANANANANANANANAU1-SFDS0025/8/20089:108.81E+021.50E+021.96E+021.40E+015.18E-013.69E-01NANANANANANANANANA 00310/15/200812:451.09E+031.79E+021.67E+021.85E+011.26E+004.56E-01NANANANANANANANANA 0041/14/20099:153.11E+021.82E+021.93E+021.22E+011.67E+008.15E-016.39E+003.47E+002.22E+001.03E+001.91E+002.27E+007.26E+001.62E+011.83E+01RW-1001107.5-3010/25/200611:376.41E+044.88E+038.52E+02-8.44E-011.29E+001.52E+009.50E-014.75E+005.45E+008.01E-014.62E+005.32E+00NANANARW-1002107.5-3010/25/200614:152.95E+042.28E+035.85E+023.10E-018.79E-019.23E-011.99E+005.23E+005.98E+004.31E-014.74E+005.22E+00NANAN A005107.5-3010/31/200620:001.89E+041.49E+034.73E+029.06E-011.15E+001.14E+005.93E-014.51E+005.21E+001.65E+005.31E+006.60E+00NANAN A004107.5-3010/31/200615:552.63E+042.04E+035.51E+02-1.06E+001.15E+001.39E+00-2.26E-013.86E+003.99E+00-6.22E-032.86E+003.21E+00NANANA003107.5-3010/31/200612:271.07E+058.06E+031.10E+03-3.70E-019.51E-011.09E+007.18E-014.23E+004.71E+007.34E-013.04E+003.61E+00NANA NA006107.5-3011/1/200612:001.84E+041.45E+034.66E+023.64E-011.03E+001.08E+00-3.39E+004.14E+003.90E+00-5.25E-014.01E+004.19E+00NANA NA007107.5-3011/2/200612:002.40E+042.13E+031.00E+031.50E-016.00E-016.70E-011.12E+002.37E+002.60E+00-8.50E-012.37E+002.90E+00NANAN A008107.5-3011/3/20069:003.06E+042.34E+031.00E+034.80E-017.20E-017.80E-01-1.05E+002.19E+002.60E+008.20E-012.40E+002.70E+00NANANAMH-5 7 001 6/29/200712:15141E+03233E+02187E+02-326E-01621E-01920E-01-957E-01340E+00360E+00639E-02313E+00349E+00 NA NA NA MH-57 MH-5 001 6/29/200712:15 1.41E+03 2.33E+02 1.87E+02-3.26E-01 6.21E-01 9.20E-01-9.57E-01 3.40E+00 3.60E+00 6.39E-02 3.13E+00 3.49E+00 NA NA NA MH-570028/10/200715:151.17E+035.21E+024.56E+023.17E-027.84E-019.38E-01-5.40E-013.17E+002.87E+00-8.50E-012.84E+002.93E+00NANANA 00310/26/200713:301.62E+032.30E+021.84E+021.60E-016.06E-017.10E-012.15E-012.64E+002.95E+00-6.20E-012.90E+003.06E+00NANANA 0041/16/200812:309.28E+022.45E+021.77E+024.62E-018.33E-019.37E-015.23E-012.78E+003.09E+005.97E-012.55E+002.90E+00NANANALAF-002001-22.36/6/200612:473.98E+013.60E+026.98E+021.38E+001.85E+001.93E+00-3.88E+001.53E+001.59E+00-2.24E+001.25E+011.34E+01-2.84E-012.13E+012.34E+01LAF-002001-22.36/6/200612:475.20E+011.71E+021.83E+02NANANANANANANANANANANANA003-22.39/19/200613:14-4.71E+011.50E+021.70E+02-5.08E-018.90E-011.07E+006.45E-029.05E+001.01E+00-2.76E+006.35E+004.99E+00NANANA 004-22.312/4/200613:38-1.20E+011.62E+021.60E+02-1.20E-017.80E-018.50E-01NANANA9.00E-015.40E+006.30E+00-2.50E+007.20E+008.10E+00 005-22.33/7/200714:45-8.30E+011.56E+021.60E+028.20E-011.50E+001.60E+003.10E+004.80E+005.10E+00-1.20E+005.40E+007.30E+00NANANA 006-22.36/7/200713:18-6.85E+001.33E+021.54E+023.19E-016.02E-016.79E-017.80E-012.63E+003.04E+006.55E-012.60E+003.04E+00NANANA 007-22.310/9/20079:357.46E+011.37E+021.55E+024.43E-014.98E-015.18E-01-5.45E-012.10E+001.69E+00-1.44E+001.78E+001.39E+00NANANA 008-22.312/4/200710:509.00E+011.46E+021.62E+024.89E-016.20E-016.62E-01-6.91E-014.59E+004.37E+00-2.35E+003.72E+003.39E+00NANANA 009-22.34/10/20080:004.65E+018.46E+011.44E+024.73E-013.02E-014.56E-011.91E+002.14E+003.95E+001.61E+002.46E+004.56E+00NANANA 010-22.310/17/200810:328.19E+011.55E+021.74E+024.05E-017.90E-019.01E-012.36E-012.76E+003.16E+00-3.08E-023.09E+003.46E+00-4.61E+002.01E+012.35E+01B-1 70016/29/200712:357.93E+022.07E+021.89E+02-3.83E-016.75E-019.80E-010.00E+007.04E+004.44E+00-9.13E-013.30E+003.40E+00NANANAB-170028/14/200711:301.10E+032.25E+021.90E+021.29E-025.93E-017.38E-010.00E+006.71E+003.93E+009.94E-013.54E+004.16E+00NANANA00310/22/200714:491.10E+034.68E+024.01E+02-1.56E-013.72E-015.51E-011.68E+015.82E+003.82E+001.33E+003.23E+003.53E+00NANANA 0041/22/200813:082.27E+021.61E+021.71E+021.29E-015.00E-016.12E-013.13E-012.54E+002.83E+00-9.46E-022.72E+003.01E+00NANANA 0054/18/200818:251.17E+031.57E+022.01E+02-1.14E-013.81E-017.82E-012.00E+013.70E+003.07E+00-2.48E-011.76E+002.97E+00NANANAB-6 70017/5/20079:004.03E+021.67E+021.69E+021.01E-014.97E-015.67E-011.29E+003.46E+004.04E+001.09E+003.51E+004.15E+00NANANAB-670028/14/20078:305.46E+011.68E+021.92E+02-3.06E-016.20E-018.32E-015.63E-012.97E+003.42E+00-2.88E+003.31E+002.35E+00NANANA

//00310/22/200711:301.07E+021.70E+021.90E+02-7.54E-024.34E-015.83E-012.39E+002.33E+003.04E+001.04E+002.46E+003.05E+00NANANA0041/16/200816:504.72E+022.04E+021.79E+021.05E-017.05E-018.83E-013.96E+004.41E+003.32E+001.29E+003.15E+003.66E+00NANANA0054/25/200814:155.23E+018.45E+011.43E+02-1.20E-012.59E-015.25E-01-2.89E-011.96E+003.24E+00-7.50E-013.43E+004.21E+00NANANANotes:1. For nested multi-level monitoring wells, suffix of well ID indicates depth (rounded to nearest foot) from reference point on casing to bottom of well screen. For Waterloo multi-level systems, suffix indicates depth (rounded to nearest foot) from reference point on casing to top of sampling port. Well IDs without a suffix are open bedrock wellbores.2. Sampling depths within sampling intervals (location of pump intake) have been established at location of most transmissive zone to the extent possible.3. NA indicates that the constituent was not analyzed.

4. Current well identifications are shown for each location. Minor name changes have been made based on altered transducer installations. 5. Dot pattern denotes sampling interval is positioned within overburden soils. Open box indicates sampling interval is in bedrock.6. At monitoring well U3T1, sample IDs 019-B, 019-D, and 019-S were collected for laboratory and field QAQC (B=Blind, D=Duplicate, S-Spike). Only the duplicate sample results were included in the calculations for rolling averages.7. These locations are storm drains, not monitoring wells.J:\17,000-18,999\17869\17869-91.MG\2009 Quarter 1\Tables\;Table5_updatedOct19.xlsx; MakeTable5Page 17 of 17See Page 17 for Notes FINAL QUARTERLY LONG-TERM GROUNDWATER MONITORING REPORT Q1 2009 (REPORT NO. 5)

FIGURES Figure 1 Site Location Plan Figure 2 Site Plan Figure 3 Lower Hudson Valley Geologic Map Figure 4 Current and Potentia l Future SSC Source Locations Figure 4A Unit 3 - Cross-Section C-C" Figure 5 1st Quarter 2009 Shallow and Deep Groundwater Contours Figure 5A 1 st Quarter 2009 Long-Term Transducer Monitoring Evaluation Map Figure 6 1st Quarter 2009 Average Tritium Activity Map Figure 7 1st Quarter 2009 Average Strontium-90 Activity Map Figure 7A Sr-90 Baseline Analysis - Unit 1 Defueling Evaluation Figure 8 1st Quarter 2009 Average Cesium, Cobalt, and Nickel Activity Map

0 2 , 0 0 0 4 , 0 0 0 1 , 0 0 0 F e e t S i t e L o c a t i o n D w g. D a t e: F i g u r e N o.: J o b N o.: P r o j. M g r.: M J B D e s i g n e d B y: M J B R e v i e w e d B y: M J B O p e r a t o r: G A S 0 1.0 0 1 7 8 6 9.9 1 0 5-2 0-2 0 0 9 1 I N D I A N P O I N T E N E R G Y C E N T E R B U C H A N A N , N E W Y O R K G Z A G e o E n v i r o n m e n t a l , I n c.O n e E d g e w a t e r D r i v e N o r w o o d , M A 0 2 0 6 2 P h o n e: (7 8 1) 2 7 8-3 7 0 0 F a x: (7 8 1) 2 7 8-5 7 0 1 S I T E L O C U S P L A N J:\1 7 , 0 0 0-1 8 , 9 9 9\1 7 8 6 9\1 7 8 6 9-9 1.M G\F i g u r e s\G I S\M X D D o c u m e n t s\Q 1_2 0 0 9\1 7 8 6 9-9 1_1_S i t e L o c a t i o n P l a n.m x d T r a n s.T r a n s f o r m e r a r e a a n d s w i t c h g e a r T a n k T r a n s f o r m e r y a r d T a n k 3 0 3 0 7 0 8 0 9 0 8 0 7 0 9 0 8 0 T a n k T a n k T a n k C o n d e n s a t e T a n k T r a n s f o r m e r s o n r a i s e d C o n c r e t e P a d T r a n s.T r a n s f o r m e r s C o n c r e t e s l a b T a n k T r a n s f o r m e r s o n r a i s e d C o n c r e t e P a d T a n k S t o r a g e T a n k T r a n s f o r m e r S u b s t a t i o n " H" T r a i l e r T r a n s T a n k S t o r a g e T a n k T a n k P i t T r a n s T r a n s T r a n s S t o r a g e T a n k s T r a n s f o r m e r s Y a r d (G r a v e l)D I S C H A R G E O U T F A L L C A N A L T u r b i n e G e n e r a t o r B u i l d i n g 2 T u r b i n e G e n e r a t o r B u i l d i n g 1 T u r b i n e G e n e r a t o r B u i l d i n g 3 T r a n s f o r m e r Y a r d P r i m a r y A u x i l l i a r y B u i l d i n g R e a c t o r W a t e r S t o r a g e T a n k U N I T 2 U N I T 1 U N I T 3 H u d s o n R i v e r D i s c h a r g e C a n a l U n i t 1 S c r e e n w e l l H o u s e C o n d e n s a t e P o l i s h e r B u i l d i n g I n t a k e S t r u c t u r e H e a t e r B a y A u x.B o i l e r B u i l d i n g A d m i n i s t r a t i o n B u i l d i n g D i s c h a r g e C a n a l T r a n s f o r m e r Y a r d P r i m a r y A u x i l l i a r y B u i l d i n g S u p e r h e a t e r / A d m i n. B u i l d i n g N u c l e a r S e r v i c e B u i l d i n g F u e l S t o r a g e B u i l d i n g C h e m. S e r v i c e F u e l P o o l F u e l S t o r a g e B u i l d i n g O u t f a l l M O B C u r t a i n D r a i n S t a c k S p h e r e F o u n d a t i o n D r a i n S u m p R e a c t o r W a t e r S t o r a g e T a n k T a n k P i t F P T P r e s s u r e W a t e r S t o r a g e T a n k P a s s i v e W a t e r S t o r a g e T a n k C u r t a i n D r a i n A n n u l u s F u e l P o o l F u e l P o o l C o n t a i n m e n t S p r a y S u m p F P T C h e m. S y s.F o u n d a t i o n D r a i n S C D N C D U t i l i t y T u n n e l U t i l i t y T u n n e l J:\1 7 , 0 0 0-1 8 , 9 9 9\1 7 8 6 9\1 7 8 6 9-9 1.M G\F i g u r e s\G I S\M X D D o c u m e n t s\Q 1_2 0 0 9\1 7 8 6 9-9 1_2_S i t e P l a n.m x d L E G E N D 5 0 0 5 0 1 0 0 1 5 0 2 5 F e e t P l a n t N o r t h N N S t o r m D r a i n S t o r m D r a i n - C o n n e c t i o n T e r m i n a t e d F o o t i n g / C u r t a i n D r a i n F i g u r e N o.: J o b N o.: D w g. D a t e: P r o j. M g r.: D M W D e s i g n e d B y: M J B/D M W R e v i e w e d B y: D M W O p e r a t o r: G A S/E M D 0 1.0 0 1 7 8 6 9.9 1 0 5-2 0-2 0 0 9 2 I N D I A N P O I N T E N E R G Y C E N T E R B U C H A N A N , N E W Y O R K G Z A G e o E n v i r o n m e n t a l , I n c.O n e E d g e w a t e r D r i v e N o r w o o d , M A 0 2 0 6 2 P h o n e: (7 8 1) 2 7 8-3 7 0 0 F a x: (7 8 1) 2 7 8-5 7 0 1 S I T E P L A N

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