Text

Submittal of 2012 Annual Radiological Environmental Operating Report
	ML13137A105
Person / Time
Site:	Braidwood
Issue date:	05/14/2013
From:	Enright D; Exelon Generation Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	Download: ML13137A105 (254)
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Exelon Generation Company, LLC Exeton Generation Braidwood Nuclear Power Station 35100 South Route 53, Suite 84 Braceville, IL 60407-9619 www.exeloncorp.com May 14, 2013 BW130047 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555-0001 Braidwood Station, Units 1 and 2 Facility Operating License Nos. NPF-72 and NPF-77 NRC Docket Nos. STN 50-456 and STN 50-457

Subject:

2012 Annual Radiological Environmental Operating Report Attached is the 2012 Annual Radiological Environmental Operating Report for Braidwood Station. This report is being submitted in accordance with Technical Specification 5.6.2, "Annual Radiological Environmental Operating Report." This report contains information associated with the station's radiological environmental and meteorological monitoring programs. This information is consistent with the objectives described in the Offsite Dose Calculation Manual and 10 CFR 50, Appendix I, "Numerical Guides for Design Objectives and Limiting Conditions for Operation to Meet the Criterion 'As Low as is Reasonably Achievable' for Radioactive Material In Light-Water-Cooled Nuclear Power Reactor Effluents," Sections IV.B.2, and IV.B.3. Technical Specification 5.6.2 requires the Annual Radiological Environmental Operating Report to be submitted by May 15 of each year.

If you have any questions regarding this information, please contact Chris VanDenburgh, Regulatory Assurance Manager, at (815) 417-2800.

Respectfully, Daniel J. Enright Site Vice President Braidwood Station cc: US NRC Regional Administrator, Region III US NRC Senior Resident Inspector - Braidwood Station NRR Project Manager - Braidwood Station Illinois Emergency Management Agency - Division of Nuclear Safety

Docket No: 50-456 50-457 BRAIDWOOD STATION UNITS 1 and 2 Annual Radiological Environmental Operating Report 1 January through 31 December 2012 Prepared By Teledyne Brown Engineering Environmental Services o Exeon G~eneration.,

Braidwood Station Braceville, IL 60407 May 2013

Intentionally left blank Table Of Contents I. Sum m ary and Conclusions .............................................................................................. 1 I1. Introduction ............................................................................................................. 2 A. Objectives of the REM P .................................................................................. 2 B. Im plem entation of the Objectives .................................................................. 2 Ill. Program Description ................................................................................................ 2 A. Sam ple Collection ........................................................................................... 2 B. Sam ple Analysis .............................................................................................. 5 C. Data Interpretation ......................................................................................... 5 D. Program Exceptions ....................................................................................... 6 E. Program Changes ......................................................................................... 9 IV. Results and Discussion ........................................................................................... 9 A. Aquatic Environm ent ....................................................................................... 9

1. Surface W ater ..................................................................................... 9

2. Public Water ....................................................................................... 10

3. G round/well W ater .............................................................................. 11 4 . F ish ................................................................................................... . . 11

5. Sedim ent ............................................................................................ 11 B. Atm ospheric Environm ent ........................................................................... 12

1. Airborne .............................................................................................. 12

a. Air Particulates ......................................................................... 12

b. Airborne Iodine ...................................................................... 13 C. Terrestrial Environm ent ................................................................................ 13

1. Milk ................................................................................................... . . 13

2. Food Products .................................................................................... 13 D. Am bient Gam m a Radiation ........................................................................... 14 E. Land Use Survey .......................................................................................... 14 F. Summary of Results - Inter-laboratory Comparison Program ...................... 15

Appendices Appendix A Radiological Environmental Monitoring Report Annual Summary Tables Table A-1 Radiological Environmental Monitoring Program Annual Summary for Braidwood Station, 2012 Appendix B Location Designation, Distance & Direction, and Sample Collection &

Analytical Methods Tables Table B-1 Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Braidwood Station, 2012 Table B-2 Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Braidwood Station, 2012 Figqures Figure B-1 Inner Ring OSLD Locations of the Braidwood Station, 2012 Figure B-2 Fixed Air Sampling and Outer Ring OSLD Locations of the Braidwood Station, 2012 Figure B-3 Ingestion and Waterborne Exposure Pathway Sample Locations of the Braidwood Station, 2012 Appendix C Data Tables and Figures - Primary Laboratory Tables Table C-1. 1 Concentrations of Gross Beta in Surface Water Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-1.2 Concentrations of Tritium in Surface Water Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-1.3 Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-11.1 Concentrations of Gross Beta in Public Water Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-11.2 Concentrations of Tritium in Public Water Samples Collected in the Vicinity of Braidwood Station, 2012.

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Table C-11.3 Concentrations of 1-131 in Public Water Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-11.4 Concentrations of Gamma Emitters in Public Water Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-II1.1 Concentrations of Tritium in Ground/Well Water Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-111.2 Concentrations of Gamma Emitters in Ground/Well Water Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-IV.1 Concentrations of Gamma Emitters in Fish Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-V.1 Concentrations of Gamma Emitters in Sediment Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-VI.1 Concentrations of Gross Beta in Air Particulate Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-VI.2 Monthly and Yearly Mean Values of Gross Beta Concentrations in Air Particulate Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-VI.3 Concentrations of Gamma Emitters in Air Particulate Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-VII.1 Concentrations of 1-131 in Air Iodine Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-VIII.1 Concentrations of 1-131 in Milk Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-VIII.2 Concentrations of Gamma Emitters in Milk Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-IX. 1 Concentrations of Gamma Emitters in Vegetation Samples Collected in the Vicinity of Braidwood Station, 2012.

Table C-X.1 Quarterly OSLD Results for Braidwood Station, 2012.

Table C-X.2 Mean Quarterly OSLD Results for the Inner Ring, Outer Ring, Other, and Control Locations for Braidwood Station, 2012.

Table C-X.3 Summary of the Ambient Dosimetry Program for Braidwood Station, 2012.

Figures Figure C-1 Surface Water - Gross Beta - Stations BD-10 and BD-25 (C) Collected in the Vicinity of Braidwood Station, 2000 - 2012.

Figure C-2 Surface Water - Gross Beta - Stations BD-38 and BD-40 Collected in the Vicinity of Braidwood Station, 2007 - 2012.

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Figure C-3 Surface Water - Gross Beta - Stations BD-55 and BD-56 Collected in the Vicinity of Braidwood Station, 2007 - 2012.

Figure C-4 Surface Water - Tritium - Stations BD-1 0 and BD-25 (C) Collected in the Vicinity of Braidwood Station, 2000 - 2012.

Figure C-5 Surface Water - Tritium - Stations BD-38 and BD-40 Collected in the Vicinity of Braidwood Station, 2006 - 2012.

Figure C-6 Surface Water - Tritium - Stations BD-55 and BD-56 Collected in the Vicinity of Braidwood Station, 2007 - 2012.

Figure C-7 Public Water - Gross Beta - Station BD-22 Collected in the Vicinity of Braidwood Station, 2000 - 2012.

Figure C-8 Public Water - Tritium - Station BD-22 Collected in the Vicinity of Braidwood Station, 2000 - 2012.

Figure C-9 Ground/Well Water - Tritium - Stations BD-13 and BD-34 Collected in the Vicinity of Braidwood Station, 2000 - 2012.

Figure C-10 Ground/Well Water - Tritium - Stations BD-35 and BD-36 Collected in the Vicinity of Braidwood Station, 2000 - 2012.

Figure C-11 Ground/Well Water - Tritium - Station BD-37 Collected in the Vicinity of Braidwood Station, 2000 - 2012.

Figure C-12 Ground/Well Water - Tritium - Stations BD-50 and BD-51 Collected in the Vicinity of Braidwood Station, 2007 - 2012.

Figure C-13 Ground/Well Water - Tritium - Stations BD-53 and BD-54 Collected in the Vicinity of Braidwood Station, 2007 - 2012.

Figure C-14 Air Particulate - Gross Beta - Stations BD-03 (C) and BD-06 Collected in the Vicinity of Braidwood Station, 2000 - 2012.

Figure C-15 Air Particulate - Gross Beta - Stations BD-19 and BD-20 Collected in the Vicinity of Braidwood Station, 2000 - 2012.

Figure C-16 Air Particulate - Gross Beta - Station BD-21 Collected in the Vicinity of Braidwood Station, 2000 - 2012.

Figure C-17 Air Particulate - Gross Beta - Stations BD-02 and BD-04 Collected in the Vicinity of Braidwood Station, 2005 - 2012.

Figure C-18 Air Particulate - Gross Beta - Station BD-05 Collected in the Vicinity of Braidwood Station, 2005 - 2012.

Appendix D Inter-Laboratory Comparison Program Tables Table D-1 Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2012 iv

Table D-2 ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2012 Table D-3 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Teledyne Brown Engineering, 2012 Table D-4 ERA Statistical Summary Proficiency Testing Program for Environmental, Inc., 2012 Table D-5 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Environmental, Inc., 2012 Appendix E Effluent Data Appendix F Meteorological Data Appendix G Annual Radiological Groundwater Protection Program Report (ARGPPR) v

I. Summary and Conclusions This report on the Radiological Environmental Monitoring Program (REMP) conducted for Exelon's Braidwood Station covers the period January 1, 2012 through December 31, 2012. During that time period 1,602 analyses were performed on 1,368 samples. In assessing all the data gathered for this report and comparing these results with preoperational data, it was concluded that the operation of Braidwood Station had no adverse radiological impact on the environment.

Surface, public, and ground/well water samples were analyzed for concentrations of tritium and gamma emitting nuclides. Surface water and public water samples were also analyzed for concentrations of gross beta. No fission or activation products were detected. Gross beta and tritium activities detected were consistent with those detected in previous years.

Fish (commercially and/or recreationally important species) and sediment samples were analyzed for concentrations of gamma emitting nuclides. No fission or activation products were detected in fish. Two sediment samples had Cs-1 37. The concentration was consistent with levels observed during the preoperational years. No plant produced fission or activation products were found in sediment.

Air particulate samples were analyzed for concentrations of gross beta and gamma emitting nuclides. No fission or activation products were detected.

High sensitivity 1-131 analyses were performed on weekly air samples. All results were less than the minimum detectable concentration for 1-131.

Cow milk samples were analyzed for concentrations of 1-131 and gamma emitting nuclides. lodine-131 was not detected in any milk samples.

Concentrations of naturally occurring K-40 were also detected. No fission or activation products were found and all required LLDs (Lower Limit of Detection) were met.

Food Product samples were analyzed for concentrations of gamma emitting nuclides. No plant produced fission or activation products were detected.

Environmental gamma radiation measurements were performed quarterly using Optically Stimulated Luminescence Dosimeters (OSLD). Beginning in 2012, Exelon changed the type of dosimetry used for the Radiological Environmental Monitoring Program (REMP). Optically Stimulated Luminescent Dosimetry were deployed and Thermo-luminescent Dosimetry (TLD) were discontinued. This change may result in a step change in readings, up or down, depending on site characteristics. The relative comparison to control locations remains valid.

OSLD technology is different than that used in a TLD but has the same purpose (to measure direct radiation).

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IH. Introduction The Braidwood Station, consisting of two 3,587 MWt pressurized water reactors owned and operated by Exelon Corporation is located in Will County, Illinois.

Unit No. 1 went critical on May 29, 1987. Unit No. 2 went critical on March 08, 1988. The site is located in northeastern Illinois, 15 miles south-southwest of Joliet, Illinois, 60 miles southwest of Chicago and southwest of the Kankakee River.

This report covers those analyses performed by Teledyne Brown Engineering (TBE), Landauer Technologies and Environmental Inc. (Midwest Labs) on samples collected during the period January 1, 2012 through December 31, 2012.

A. Objective of the REMP The objectives of the REMP are to:

1. Provide data on measurable levels of radiation and radioactive materials in the site environs.

2. Evaluate the relationship between quantities of radioactive material released from the plant and resultant radiation doses to individuals from principal pathways of exposure.

B. Implementation of the Objectives The implementation of the objectives is accomplished by:

1. Identifying significant exposure pathways.

2. Establishing baseline radiological data of media within those pathways.

3. Continuously monitoring those media before and during Station operation to assess Station radiological effects (if any) on man and the environment.

i~i. Program Description A. Sample Collection Samples for the Braidwood Station REMP were collected for Exelon Nuclear by Environmental Inc. (Midwest Labs). This section describes the general collection methods used by Environmental Inc. (Midwest Labs) to obtain environmental samples for the Braidwood Station REMP in 2012.

Sample locations and descriptions can be found in Table B-1 and Figures B-1 through B-3, Appendix B. The sampling methods used by Environmental Inc. are listed in Table B-2.

Aquatic Environment The aquatic environment was evaluated by performing radiological analyses on samples of surface water, public water, well water, fish, and sediment. Two gallon water samples were collected weekly from six surface water locations (BD-10, BD-25 [control], BD-38, BD-40, BD-55 and BD-56), and two weekly composite samples of public drinking water at location (BD-22) and ground/well water samples collected quarterly from nine locations (BD-13, BD-34, BD-35, BD-36, BD-37, BD-50, BD-51 and BD-54). All samples were collected in new unused plastic bottles, which were rinsed with source water prior to collection. Fish samples comprising the flesh of largemouth bass, golden redhorse, channel catfish, quillback and common carp were collected semiannually at three locations, BD-25 (control), BD-28 and BD-41. Sediment samples composed of recently deposited substrate were collected at two locations semiannually, BD-10 and BD-57.

Atmospheric Environment The atmospheric environment was evaluated by performing radiological analyses on samples of air particulate and airborne iodine. Air particulate samples were collected and analyzed weekly at eight locations (BD-02, BD-03, BD-04, BD-05, BD-06, BD-19, BD-20 and BD-21). The control location was BD-03. Airborne iodine and particulate samples were obtained at each location, using a vacuum pump with charcoal and glass fiber filters attached. The pumps were run continuously and sampled air at the rate of approximately one cubic foot per minute. The air filters and air iodine samples were replaced weekly and sent to the laboratory for analysis.

Terrestrial Environment The terrestrial environment was evaluated by performing radiological analyses on milk and food product samples. Milk samples were collected biweekly at two locations (BD-1 7 and BD-1 8) from May through October and monthly from November through April. The control location was BD-18. All samples were collected in new unused two gallon plastic bottles from the bulk tank at each location, preserved with sodium bisulfite and shipped promptly to the laboratory. Food products were collected annually in September at five locations (BD-Control, BD-Quad 1, BD-Quad 2, BD-Quad 3 and BD-Quad 4). The control location was BD-Control. Various types of samples were collected and placed in new unused plastic bags and sent to the laboratory for analysis.

Ambient Gamma Radiation Beginning in 2012, Exelon changed the type of dosimetry used for the Radiological Environmental Monitoring Program (REMP). Optically Stimulated Luminescent Dosimetry were deployed and Thermoluminescent Dosimetry (TLD) were discontinued. This change may result in a step change in readings, up or down, depending on site characteristics. The relative comparison to control locations remains valid. OSLD technology is different than that used in a TLD but has the same purpose (to measure direct radiation).

Each location consisted of 2 OSLDs. The OSLDs were exchanged quarterly and sent to Landauer for analysis. The OSLDs were placed at locations on and around the Braidwood Station site as follows:

An inner ring consisting of 16 locations (BD-101, BD-102, BD-103, BD-104, BD-105, BD-1 06, BD-107, BD-108, BD-109, BD-110, BD-111a, BD-112, BD-113a, BD-114, BD-115 and BD-116) at or near the site boundary.

An outer ring consisting of 16 locations (BD-201, BD-202, BD-203, BD-204, BD-205, BD-206, BD-207, BD-208, BD-209, BD-210, BD-211, BD-212, BD-213, BD-214, BD-215 and BD-216) extending to approximately 5 miles from the site.

An additional (other) set consisting of seven locations (BD-02, BD-04, BD-05, BD-06, BD-19, BD-20 and BD-21).

The balance of one location (BD-03) represents the control area.

The specific OSLD locations were determined by the following criteria:

1. The presence of relatively dense population;

2. Site meteorological data taking into account distance and elevation for each of the sixteen-22 1/2 degree sectors around the site where estimated annual dose from Braidwood Station, if any, would be most significant.

B. Sample Analysis This section describes the general analytical methodologies used by TBE and Environmental Inc. (Midwest Labs) to analyze the environmental samples for radioactivity for the Braidwood Station REMP in 2012. The analytical procedures used by the laboratories are listed in Table B-2.

In order to achieve the stated objectives, the current program includes the following analyses:

1. Concentrations of beta emitters in public and surface water and air particulates.

2. Concentrations of gamma emitters in public, ground/well and surface water, air particulates, milk, fish, sediment and food products.

3. Concentrations of tritium in public, ground/well and surface water.

4. Concentrations of 1-131 in air, milk and public water.

5. Ambient gamma radiation levels at various site environs.

C. Data Interpretation The radiological and direct radiation data collected prior to Braidwood Station becoming operational were used as a baseline with which these operational data were compared. For the purpose of this report, Braidwood Station was considered operational at initial criticality. In addition, data was compared to previous years' operational data for consistency and trending. Several factors were important in the interpretation of the data:

1. Lower Limit of Detection and Minimum Detectable Concentration The lower limit of detection (LLD) was defined as the smallest concentration of radioactive material in a sample that would yield a net count (above background) that would be detected with only a 5% probability of falsely concluding that a blank observation represents a "real" signal. The LLD was intended as a before the fact estimate of a system (including instrumentation, procedure and sample type) and not as an after the fact criteria for the presence of activity. All analyses were designed to achieve the required Braidwood Station detection capabilities for environmental sample analysis.

The MDC is the smallest concentration of radioactive material in a sample that will yield a net count, above system background, that will be detected with 95% probability with only 5% probability of falsely concluding that a blank observation represents a "real" signal. The MDC an a postoridetermination.

2. Net Activity Calculation and Reportinq of Results Net activity for a sample was calculated by subtracting background activity from the sample activity. Since the REMP measures extremely small changes in radioactivity in the environment, background variations may result in sample activity being lower than the background activity resulting in a negative number. An MDC was reported in all cases where positive activity was not detected.

Gamma spectroscopy results for each type of sample were grouped as follows:

For surface, ground/well water, and fish 12 nuclides, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, 1-131, Cs-134, Cs-137, Ba-140 and La-140 were reported.

For public water, sediment, air particulate, milk and vegetation 11 nuclides, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, Cs-1 34, Cs-1 37, Ba-140 and La-140 were reported.

Means and standard deviations of the results were calculated. The standard deviations represent the variability of measured results for different samples rather than the single analysis uncertainty.

D. Program Exceptions For 2012 the Braidwood Station REMP had a sample recovery rate in excess of 98.4%. Sample anomalies and missed samples are listed in the tables below:

Table D-1 LISTING OF SAMPLE ANOMALIES Sample Location Collection Reason Type Code Date WW BD-34, 35, 36, 37, 50 01/12/12 Samples were not collected due to bad road/weather conditions. The samples will be collected on 01/19/12.

AM1 BD-05 01/26/12 No apparent reason for the low reading of 165.1 hours1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months .

A/I BD-06 01/26/12 No apparent reason for the low reading of 165.1 hours1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months .

A/I BD-05 02/09/12 Estimated reading of 167.0 hours0 days 0 hours 0 weeks 0 months ; the collector replaced timer.

A/I BD-06 04/12/12 No apparent reason for the low reading of 165.6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

OSLD BD-202-2 06/07/12 OSLD was found on the ground.

The OSLD was replaced on the pole.

OSLD BD-207-2 06/07/12 OSLD was found on the ground.

The OSLD was replaced on pole.

A/I BD-19 08/09/12 Low reading of 52.3 hours3.472222e-5 days 8.333333e-4 hours 4.960317e-6 weeks 1.1415e-6 months due to pump malfunction. Collector replaced pump; flowrate estimated

@ 60 cfh.

A/I BD-02, 19, 20, 21 10/11/12 Heavier than usual particulate matter on APs due to preparation for painting.

Table D-1 LISTING OF SAMPLE ANOMALIES (continued)

Sample Location Collection Reason Type Code Date DW BD-22 03/23/12 Vendor tritium results for a weekly water sample taken at Wilmington's water plant yielded 453 pCi/L. The vendor analyzed a second sample and got consistent results. This value is less than the ODCMs REMP reporting level of 2,000 pCi/L and much less than the ODCMs REMP reporting level of 20,000 pCi/I.

Therefore, no immediate additional actions are required. It is not unanticipated as it is due to liquid effluents. It is less than the investigation level found in CY-AA-170-1000. This tritium level is slightly less than the anticipated value estimated during the analysis of the river diffuser and ultra low flow modification. The actual value was slightly lower than the estimated 600 pCi/I weekly monitoring period.

Table D-2 LISTING OF MISSED SAMPLES Sample Location Collection Reason Type Code Date AP BD-05 01/19/12 The filter was caught in the wind, with the ground conditions unsafe to pursue the filter was deemed lost.

SW BD-56 01/19/12 No sample, water was frozen.

OSLD BD-101-4 03/31/12 First quarter missing in field at quarterly exchange.

OSLD OSGSF-6 03/31/12 First Quarter missing in field at quarterly exchange.

OSLD BD-305-2 06/27/12 Second quarter missing in field at quarterly exchange.

Table D-2 LISTING OF MISSED SAMPLES Sample Location Collection Reason Type Code Date OSLD BD-106-1 06/27/12 Second quarter OSLD was lost at the Landauer facility.

OSLD BD-214-1 09/27/12 Third quarter missing in field at quarterly exchange.

Each program exception was reviewed to understand the causes of the program exception. Sampling and maintenance issues were reviewed with the personnel involved to prevent recurrence. Occasional equipment breakdowns, power outages and weather related issues were unavoidable.

The overall sample recovery rate indicates that the appropriate procedures and equipment are in place to assure reliable program implementation.

E. Program Changes No program changes in 2012.

IV. Results and Discussion A. Aquatic Environment

1. Surface Water Samples were taken weekly and composited monthly at six locations (BD-10, BD-25, BD-38, BD-40, BD-55 and BD-56). Of these locations, only BD-10 could be affected by Braidwood Station's effluent releases as it is downstream of the NPDES permitted outfall. The following analyses were performed.

Gross Beta Samples from all locations were analyzed for concentrations of gross beta (Table C-I.1, Appendix C). Gross beta was detected in 70 of 72 samples. The values ranged from 2.9 to 12.1 pCi/L.

Concentrations detected were consistent with those detected in previous years (Figures C-1 through C-3, Appendix C).

Tritium Quarterly composites of weekly collections were analyzed for tritium activity (Table C-1.2, Appendix C). Tritium activity was detected in two samples. The values ranged from 526 to 1,150 pCi/I (Figures C-4 through C-6, Appendix C).

Gamma Spectrometry Samples from all locations were analyzed for gamma emitting nuclides (Table C-1.3, Appendix C). No nuclides were detected and all required LLDs were met.

2. Public Water Monthly composites of weekly samples were made at one location (BD-22). This location could be affected by Braidwood Station's effluent releases. The following analyses were performed:

Gross Beta Samples from the location were analyzed for concentrations of gross beta (Tables C-I1.1, Appendix C). Gross beta was detected in 10 of 12 samples. The values ranged from 2.8 to 7.4 pCi/L.

Concentrations detected were consistent with those detected in previous years (Figure C-7, Appendix C).

Tritium Monthly composites of weekly samples from BD-22 were analyzed for tritium activity (Table C-I1.2, Appendix C). Tritium was detected in 9 of 12 samples. The concentration ranged from 198 to 3,370 pCi/L. Concentrations detected were consistent with those detected in previous years (Figure C-8, Appendix C).

Iodine Monthly composites of weekly samples from the location were analyzed for 1-131 (Table C-11.3, Appendix C). Iodine was not detected in any samples and the required LLD was met.

Gamma Spectrometry Samples from the location were analyzed for gamma emitting nuclides (Table C-11.4, Appendix C). No nuclides were detected and all required LLDs were met.

3. Ground/Well Water Quarterly samples were collected at eight locations (BD-13, BD-34, BD-35, BD-36, BD-37, BD-50, BD-51and BD-54). The following analyses were performed:

Tritium Quarterly grab samples from the locations were analyzed for tritium activity (Table C-111.1, Appendix C). Tritium was not detected in any sample and the required LLD was met. (Figures C-9 through C-13, Appendix C).

Gamma Spectrometry Samples from all locations were analyzed for gamma emitting nuclides (Table C-111.2, Appendix C). No nuclides were detected and all required LLDs were met.

4. Fish Fish samples comprised of largemouth bass, golden redhorse, quillback and common carp were collected at three locations (BD-25, BD-28, and BD-41) semiannually. Location BD-28 could be affected by Braidwood Station's effluent releases. The following analysis was performed:

Gamma Spectrometry The edible portion of fish samples from all three locations was analyzed for gamma emitting nuclides (Table C-IV. 1, Appendix C).

No fission or activation products were found. No nuclides were detected and all required LLDs were met.

5. Sediment Aquatic sediment samples were collected at two locations (BD-10 and BD-57) semiannually. The locations at the Braidwood Station outfall to the Kanakakee River and downstream of the outfall, could be affected by Braidwood Station's effluent releases. The following analysis was performed:

Gamma Spectrometry Sediment samples from the location were analyzed for gamma emitting nuclides (Table C-V.1, Appendix C). Concentrations of the fission product Cs-1 37 were found at locations BD-10 and BD-57. The concentration ranged from 122 to 205 pCi/kg dry. The activity detected was consistent with those detected in previous years (29 pCi/kg to 260 pCi/kg from 1995 to 2006). No other Braidwood fission or activation products were found and all required LLDs were met.

B. Atmospheric Environment

1. Airborne

a. Air Particulates Continuous air particulate samples were collected from eight locations on a weekly basis. The eight locations were separated into three groups: Near field samplers (BD-06, BD-1 9, BD-20 and BD-21), far field samplers within 10 km of the site (BD-02, BD-04 and BD-05) and the Control sampler between 10 and 30 km from the site (BD-03). The following analyses were performed:

Gross Beta Weekly samples were analyzed for concentrations of beta emitters (Table C-VI.1 and C-VI.2, Appendix C).

Detectable gross beta activity was observed at all locations.

Comparison of results among the three groups aid in determining the effects, if any, resulting from the operation of Braidwood Station. The results from the near field (Group I) ranged from 6 to 48 E-3 pCi/m 3 with a mean of 21 E-3 pCi/m* . The results from the far field (Group II) ranged from 7 to 48 E-3 pCi/m 3 with a mean of 21 E-3 pCi/rn 3 . The results from the Control location (Group Ill) ranged from 9 to 42 E-3 pCi/m 3 with a mean of 22 E-3 pCi/m 3 . Comparison of the 2012 air particulate data with previous years data indicate no effects from the operation of Braidwood Station.

In addition a comparison of the weekly mean values for 2012 indicate no notable differences among the three groups (Figures C-14 through C-18, Appendix C).

Gamma Spectrometry Weekly samples were composited quarterly and analyzed for gamma emitting nuclides (Table C-VI.3, Appendix C).

No nuclides were detected and all required LLDs were met.

b. Airborne Iodine Continuous air samples were collected from eight locations (BD-02, BD-03, BD-04, BD-05, BD-06, BD-19, BD-20 and BD-21) and analyzed weekly for 1-131 (Table C-VII.1, Appendix C). All results were less than the minimum detectable concentration for 1-131.

C. Terrestrial Environment

1. Milk Samples were collected from two locations (BD-17 and BD-18). Sampling frequencies were increased to biweekly in May and continued through October and monthly sampling was performed November through April. The following analyses were performed:

Iodine-131 Milk samples from both locations were analyzed for concentrations of 1-131 (Table C-VIII.1, Appendix C).

Iodine-131 was not detected in any samples. All required LLDs were met.

Gamma Spectrometry Each milk sample was analyzed for concentrations of gamma emitting nuclides (Table C-VIII.2, Appendix C). No nuclides were detected and all required LLDs were met.

2. Food Products Food product samples were collected at five locations (BD-Control, BD-Quad 1, BD-Quad 2, BD-Quad 3 and BD-Quad

4) when available. Four locations, (located downstream, BD-Quad 1, BD-Quad 2, BD-Quad 3 and BD-Quad 4) could be affected by Braidwood Station's effluent releases. The following analysis was performed:

Gamma Spectrometry Samples from all locations were analyzed for gamma emitting nuclides (Table C-IX.1, Appendix C). No nuclides were detected and all required LLDs were met.

D. Ambient Gamma Radiation Ambient gamma radiation levels were measured utilizing Optically Stimulated Luminescence Dosimeter (OSLD). Eighty OSLD locations were established around the site. Results of OSLD measurements are listed in Tables C-X.1 to C-X.3, Appendix C.

Most OSLD measurements were below 30 mR/quarter, with a range of 14.2 to 28.3 mR/quarter. A comparison of the Inner Ring, Outer Ring and Other data to the Control Location data, indicate that the ambient gamma radiation levels from all locations were similar.

E. Land Use Survey A Land Use Survey conducted during August 2012 around the Braidwood Station was performed by Environmental Inc. (Midwest Labs) for Exelon Nuclear to comply with section 12.5.2 of the Braidwood Station's Offsite Dose Calculation Manual. The purpose of the survey was to document the nearest resident, milk producing animal and garden of greater than 500 ft2 in each of the sixteen 22 % degree sectors around the site. For dose calculation, a garden is assumed at the nearest residence. There were no changes required to the Braidwood Station REMP, as a result of this survey. The results of this survey are summarized below.

Distance in Miles from the Braidwood Station Reactor Buildings Sector Residence Livestock Milk Farm Miles Miles Miles (A) N 0.5 2.6 (B) NNE 0.9 (C) NE 0.7 0.9 (D) ENE 0.8 3.3 (E) E 1.5 2.3 (F) ESE 2.2 2.3 (G) SE 2.7 2.7 11.2 (H)SSE 4.5 (J) S 4.2 4.8 (K)SSW 1.3 5.3 5.5 (L) SW 0.4 1.2 (M)WSW 0.5 (N) W 0.4 1.6 8.7 (P) WNW 0.4 (Q)NW 0.4 (R) NNW 0.4 F. Errata Data The footnote for the Annual Summary (Appendix A) in the 2010 AREOR incorrectly stated "The mean and 2 standard deviation values are calculated using both the MDAs and the positive values". The annual summary displays the mean and two standard deviations based on the positive values only.

G. Summary of Results - Inter-Laboratory Comparison Program The primary and secondary laboratories analyzed Performance Evaluation (PE) samples of air particulate, air iodine, milk, soil, vegetation and water matrices (Appendix D). The PE samples supplied by Analytics Inc., Environmental Resource Associates (ERA) and DOE's Mixed Analyte Performance Evaluation Program (MAPEP) were evaluated against the following pre-set acceptance criteria:

1. Analytics Evaluation Criteria Analytics' evaluation report provides a ratio of laboratory results and Analytics' known value. Since flag values are not assigned by Analytics, TBE-ES evaluates the reported ratios based on internal QC requirements, which are based on the DOE MAPEP criteria.

2. ERA Evaluation Criteria ERA's evaluation report provides an acceptance range for control and warning limits with associated flag values. ERA's acceptance limits are established per the USEPA, NELAC, State Specific PT program requirements or ERA's SOP for the Generation of Performance Acceptance Limits, as applicable. The acceptance limits are either determined by a regression equation specific to each analyte or a fixed percentage limit promulgated under the appropriate regulatory document.

3. DOE Evaluation Criteria MAPEP's evaluation report provides an acceptance range with associated flag values.

The MAPEP defines three levels of performance: Acceptable (flag = "A"), Acceptable with Warning (flag = "W"), and Not Acceptable (flag = "N"). Performance is considered acceptable when a mean result for the specified analyte is +/- 20% of the reference value. Performance is acceptable with warning when a mean result falls in the range from +/- 20% to +/- 30% of the reference value (i.e., 20% < bias < 30%). If the bias is greater than 30%, the results are deemed not acceptable.

For the TBE laboratory, 12 out of 18 analytes met the specified acceptance criteria. Six analytes (Co-60, Gross Alpha, Gross Beta, Sr-89, Sr-90 and Zn-65) did not meet the specified acceptance criteria for the following reason:

1. Teledyne Brown Engineering's MAPEP March 2012 Co-60 in soil result of 7.61 Bq/kg was higher than the known value of 1.56 Bq/kg, resulting in a found to known ratio of 4.88 on a sensitivity evaluation. NCR 12-08 was initiated to investigate this failure. No cause could be found for the failure. TBE is monitoring the Co-60 in soil analyses on a case-to-case basis.

2. Teledyne Brown Engineering's MAPEP March 2012 Zn-65 in AP result of 4.19 Bq/sample was higher than the known value of 2.99 Bq/sample, exceeding the upper control limit of 3.89 Bq/sample.

NCR 12-08 was initiated to investigate this failure. No cause could be found for the failure and is considered an anomaly specific to the MAPEP sample. The first and second quarter 2012 Analytics AP Zn-65 analyses were acceptable.

3. Teledyne Brown Engineering's MAPEP September 2012 Sr-90 in water result of 19.6 pCi/L was higher than the known value of 12.2 pCi/L, exceeding the upper control limit of 15.9 pCi/L. NCR 12-11 was initiated to investigate this failure. An incorrect aliquot was entered into LIMS. Using the correct aliquot, the result would have fallen within the acceptance range.

4. Teledyne Brown Engineering's ERA May 2012 Gross Alpha in water result of 82.4 pCi/L was higher than the known value of 62.9 pCi/L, which exceeded the upper control limit of 78.0 pCi/L. NCR 12-05 was initiated to investigate this failure. The G-1 detector is slightly biased high for Th-230 based measurements. The G-1 detector is used only for ERA samples. The detector was recalibrated.

5. Teledyne Brown Engineering's ERA November 2012 Gross Beta in water result of 59.3 pCi/L was higher than the known value of 39.2 pCi/L, which exceeded the upper control limit of 46.7 pCi/L. NCR 12-13 was initiated to investigate this failure. The rerun result of 44.8 fell within the control limits. It appears an incorrect aliquot was entered into LIMS.

6. Teledyne Brown Engineering's ERA November 2012 Sr-89 in water result of 46.5 pCi/L was higher than the known value of 39.1 pCi/L, which exceeded the upper control limit of 46.1 pCi/L. NCR 12-13 was initiated to investigate this failure. The found to known ratio was 1.19, which TBE considers acceptable with warning.

For the EIML laboratory, 12 out of 14 analytes met the specified acceptance criteria. Two analytes (Gross Beta and Co-57) did not meet the specified acceptance criteria for the following reason:

1. Environmental Inc., Midwest Laboratory's ERA April 2012 Gross Beta in water result of 76.2 pCi/L was higher than the known value of 44.2 pCi/L, exceeding the upper control limit of 51.5 pCi/L. The rerun result of 38.3 fell within the control limits. A sample dilution problem is suspected.

2. Environmental Inc., Midwest Laboratory's MAPEP August 2012 Co-57 in vegetation result of 7.44 pCi/L was higher than the known value of 5.66 pCi/L, exceeding the upper control limit of 7.36 pCi/L.

The recount result of 6.74 fell within the control limits. The sample was recounted using a geometry more closely matched to the MAPEP sample size.

The Inter-Laboratory Comparison Program provides evidence of "in control" counting systems and methods, and that the laboratories are producing accurate and reliable data.

Intentionally left blank APPENDIX A RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT ANNUAL

SUMMARY

Intentionally left blank TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2012 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 2012 Location of Facility: BRACEVILLE; IL REPORTING PERIOD: 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT.) (LLD) MEASUREMENTS SURFACE WATER GR-B 72 4 5.6 8.6 10.5 BD-40 INDICATOR 0 (PCI/LITER) (58/60) (12/12) (12/12) BRAIDWOOD STATION COOLING LAKE (1.7/12.1) (3.0/10.8) (8.3/12.1) ONSITE H-3 24 200 838 <LLD 838 BD-I0 INDICATOR (2/20) (2/4) KANKAKEE RIVER DOWNSTREAM (526/1150) (526/1150) 5.4 MILES NE OF SITE GAMMA 72 MN-54 15 <LLD <LLD 0 CO-58 15 <LLD <LLD 0 FE-59 30 <LLD <LLD 0 CO-60 15 <LLD <LLD ZN-65 30 <LLD NB-95 15 <.LLD <LLD

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2012 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 2012 Location of Facility: BRACEVILLE; IL REPORTING PERIOD: 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS SURFACE WATER ZR-95 30 <LLD <LLD 0 (PCI/LITER) 1-131 15 <LLD <LLD 0 CS-134 15 <LLD <LLD 0 I-CS-137 18 <LLD <LLD 0 BA-140 60 <LLD <LLD 0 LA-140 15 -LLD <LLD 0 PUBLIC WATER GR-B 12 4 4.2 NA 4.2 BD-22 INDICATOR 0 (PCI/LITER) (10/12) (10/12) WILMINGTON (2.8/7.4) (2.8/7.4) 6.0 MILES NE OF SITE H-3 12 200 995 NA 995 BD-22 INDICATOR 0 (9/12) (9/12) WILMINGTON (198/3370) (198/3370) 6.0 MILES NE OF SITE

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2012 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 2012 Location of Facility: BRACEVILLE; IL REPORTING PERIOD: 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION A NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS PUBLIC WATER 1-131 12 <LLD NA 0 (PCI/LITER)

GAMMA 12 MN-54 15 <LLD NA 0 CO-58 15 <LLD NA 0 FE-59 30 <LLD NA 0 CO-60 15 <LLD NA 0 ZN-65 30 <LLD NA 0 NB-95 15 <LLD NA 0 ZR-95 30 <LLD NA 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2012 NameofFacility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 2012 Location of Facility: BRACEVILLE; IL REPORTING PERIOD: 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS PUBLIC WATER CS-134 15 <LLD NA 0 (PCI/LITER)

CS-137 18 <LLD NA 0 BA-140 60 <LLD NA 0 LA-140 15 <LLD NA 0 GROUND WATER H-3 32 200 <LLD NA 0 (PCI/LITER)

GAMMA 32 MN-54 15 <LLD NA 0 CO-58 15 <LLD NA 0 FE-59 30 <LLD NA 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2012 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 2012 Location of Facility: BRACEVILLE; IL REPORTING PERIOD: 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION 4 NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS GROUND WATER CO-60 15 <LLD NA (PCI/LITER)

ZN-65 30 <LLD NA 0 NB-95 15 <LLD NA 0 ZR-95 30 <LLD NA 0 1-131 15 <LLD NA CS-134 15 <LLD NA CS-137 18 <LLD NA BA-140 60 <LLD NA 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2012 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 2012 Location of Facility: BRACEVILLE; IL REPORTING PERIOD: 2012 INDICATOR CONTROL LOCATION WITH HUGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBEROF REQUIRED MEAN,(M) MEAN (M) MEAN (M) STATION# NUMBEROF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS GROUND WATER LA-140 15 <LLD NA (PCI/LITER)

FISH GAMMA 12 (PCIIKG WET) MN-54 130 <LLD <LLD 0 CO-58 130 *LLD <LLD 0 FE-59 260 <LLD <LLD 0 CO-60 130 <LLD <LLD 0 ZN-65 260 <LLD <LLD 0 NB-95 NA <LLD <LLD 0 ZR-95 NA <LLD <LLD 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2012 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-4572012 Location of Facility: BRACEVILLE; IL REPORTING PERIOD: 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPESOF NUMBEROF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS FISH 1-131 NA <LLD <LLD 0 (PCI/KG WET)

CS-134 130 <LLD <LLD 0 CS-137 150 <LLD <LLD 0 BA-140 NA <LLD <LLD 0 LA-140 NA <LLD <LLD SEDIMENT GAMMA 4 (PCI/KG DRY) NMN-54 NA <LLD NA 0 CO-58 NA <LLD NA 0 FE-59 NA <LLD NA

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2012 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-4572012 Location of Facility: BRACEVILLE; IL REPORTING PERIOD: 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUMOR TYPES OF NUMBEROF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS SEDIMENT CO-60 NA <LLD NA 0 (PCI/KG DRY)

ZN-65 NA <LLD NA 0 NB-95 NA <LLD NA 0 80 ZR-95 NA <LLD NA 0 CS-1 34 150 <LLD NA 0 CS-137 180 163 NA 205 BD-I0 INDICATOR 0 (2/4) (1/2) KANKAKEE RIVER DOWNSTREAM (122/205) 5.4 MILES NE OF SITE BA-140 NA <LLD NA 0 LA- 140 NA <LLD NA 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2012 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 2012 Location of Facility: BRACEVILLE; IL REPORTING PERIOD: 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS AIR PARTICULATE GR-B 423 10 21 21 22 BD-05 INDICATOR 0 (E-3 PCI/CU.METER) (370/370) (53/53) (52/52) GARDNER (6/48) (9/42) (10/45) 5.5 MILES SW OF SITE GAMMA 32 MN-54 NA <LLD <LLD 0

,> CO-58 NA <LLD <LLD 0 FE-59 NA <LLD <LLD 0 CO-60 NA <LLD <LLD 0 ZN-65 NA <LLD <LLD 0 NB-95 NA <LLD <LLD 0 ZR-95 NA <LLD <LLD 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2012 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456& 50-4572012 Location of Facility: BRACEVILLE; IL REPORTING PERIOD: 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (Mf)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS AIR PARTICULATE CS-1 34 50 <LLD <LLD 0 (E-3 PCI/CU.METER)

CS-137 60 <LLD <LLD 0 BA-140 NA <LLD <LLD 0 0

LA-140 NA <LLD ýLLD AIR IODINE GAMMA 424 (E-3 PCI/CU.METER) 1-131 70 <LLD <LLD 0 MILK 1-131 38 I <LLD <LLD 0 (PCIILITER)

GAMMA 38 MN-54 NA <LLD <LLD CO-58 NA <LLD <LLD

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2012 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 2012 Location of Facility: BRACEVILLE; IL REPORTING PERIOD: 2012 INDICATOR CONTROL LOCATION WITH IUGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS MILK FE-59 NA <LLD <LLD 0 (PCI/LITER)

CO-60 NA <LLD <LLD 0 ZN-65 NA <LLD <LLD 0 NB-95 NA <LLD <LLD 0 ZR-95 NA <LLD <LLD 0 CS-134 15 <LLD <LLD 0 CS-137 18 <LLD <LLD 0 BA-140 60 <LLD <LLD 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2012 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 2012 Location of Facility: BRACEVILLE; IL REPORTING PERIOD: 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS MILK LA-140 15 <LLD <LLD 0 (PCI/LITER)

VEGETATION GAMMA 10 (PCI/KG WET) MN-54 NA <LLD <LLD 0 CO-58 NA <LLD <LLD IJ FE-59 NA <LLD <LLD CO-60 NA <LLD ZN-65 NA <LLD <LLD 0 NB-95 NA <LLD <LLD 0 ZR-95 NA <LLD <LLD 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2012 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-4572012 Location of Facility: BRACEVILLE; IL REPORTING PERIOD: 2012 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M.) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS VEGETATION CS-134 60 <LLD <LLD 0 (PCI/KG WET)

CS-137 80 <LLD -LLD 0 BA-140 NA <LLD <LLD 0 LA-140 NA -LLD <LLD 0 DIRECT RADIATION OSLD-QUARTERLY 341 NA 19.6 20.3 25.2 BD-105-4 INDICATOR 0 (MILLI-ROENTGEN/QTR.) (333/333) (8/8) (4/4)

(14.2/27.4) (18.2/22.0) (23.5/26.5) 0.20 MILES SE

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

Intentionally left blank APPENDIX B LOCATION DESIGNATION, DISTANCE & DIRECTION, AND SAMPLE COLLECTION & ANALYTICAL METHODS

Intentionally left blank TABLE B-1: Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Braidwood Station, 2012 Location Location Description Distance & Direction From Site A. Surface Water BD-10 Kankakee River Downstream (indicator) 5.4 miles NE BD-25 Kankakee River Upstream (control) 9.6 miles E BD-38 Main Drainage Ditch (indicator) 1.5 miles SE BD-40 Braidwood Station Cooling Lake (indicator) Onsite BD-55 North Pond Fatlan Site (Indicator) 0.6 miles NE BD-56 South Pond Fatlan Site (indictor) 0.6 miles NE B. Drinking (Potable) Water BD-22 Wilmington (indicator) 6.0 miles NE C. Ground/Well Water BD-13 Braidwood City Hall Well (indicator) 1.7 miles NNE BD-34 Gibson Well (indicator) 4.7 miles E BD-35 Joly Well (indicator) 4.7 miles E BD-36 Hutton Well (indicator) 4.7 miles E BD-37 Nurczyk Well (indicator) 4.7 miles E BD-50 Skole Well (indicator) 4.7 miles E BD-51 Fatlan Well (indicator) 0.6 miles NE BD-54 Cash Well (indicator) 0.9 miles NE D. Milk - bi-weekly / monthly BD-1 7 Halpin's Dairy (indicator) 5.5 miles SSW BD-18 Biros' Farm (control) 8.7 miles W E. Air Particulates / Air Iodine BD-02 Custer Park (indicator) 5.0 miles E BD-03 County Line Road (control) 6.2 miles ESE BD-04 Essex (indicator) 4.8 miles SSE BD-05 Gardner (indicator) 5.5 miles SW BD-06 Godley (indicator) 0.5 miles WSW BD-19 Nearsite NW (indicator) 0.3 miles NW BD-20 Nearsite N (indicator) 0.6 miles N 181-21 Nearsite NE (indicator) 0.5 miles NE F. Fish BD-25 Kankakee River, Upstream (control) 9.6 miles E BD-28 Kankakee River, Discharge (indicator) 5.4 miles E BD-41 Cooling Lake (indicator) 1.0 mile E G. Sediment BD-10 Kankakee River, Downstream (indicator) 5.4 miles NE BD-57 Circulating Water Blowdown Discharge (indicator) 5.4 miles E H. Food Products B-I

TABLE B-i: Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Braidwood Station, 2012 Location Location Description Distance & Direction From Site Quadrant 1 Clark Farm 3.8 miles ENE Quadrant 2 W.F. Soltwisch 4.5 miles SSE Quadrant 3 Terri Schultz 4.8 miles SSW Quadrant 4 Bruce Sinkular 1.9 miles NNW Control Gorman Farm 9.0 miles NE Environmental Dosimetry - OSLD Site Boundary BD-101-3 and -4 0.5 miles N BD-102-1 and -2 1.1 miles NNE BD-103-1 and -2 1.0 mile NE BD-104-1 and -2 0.7 miles ENE BD-105-1 and -2 2.2 miles E BD-106-1 and -2 2.5 miles ESE BD-107-1 and -2 3.2 miles SE BD-108-1 and -2 3.2 miles SSE BD-109-1 and -2 3.8 miles S BD-110-1 and -2 2.8 miles SSW BD-1 Ila-1 and -2 1.4 miles SW BD-112-1 and -2 0.7 miles WSW BD-113a-1 and -2 0.5 miles W BD-114-1 and -2 0.4 miles WNW BD-115-1 and -2 0.3 miles NW BD-1 16-1 0.4 miles NNW BD-1 16-2 0.5 miles NNW Intermediate Distance BD-201-1 and -2 4.2 miles N BD-202-1 and -2 4.8 miles NNE BD-203-1 and -2 4.9 miles NE BD-204-1 and -2 4.3 miles ENE BD-205-1 and -2 4.0 miles E BD-206-1 and -2 4.5 miles ESE BD-207-1 and -2 4.5 miles SE BD-208-1 and -2 4.5 miles SSE BD-209-1 and -2 4.8 miles S BD-210-1 and -2 5.3 miles SSW BD-211-1 and -2 4.8 miles SW BD-212-3 and -4 5.0 miles WSW BD-213-3 and -4 4.8 miles W BD-214-1 and -2 4.3 miles WNW BD-215-1 and-2 4.5 miles NW BD-216-1 and -2 4.0 miles NNW Other BD-02-1 and -2 Custer Park (indicator) 5.0 miles E BD-04-1 and -2 Essex (indicator) 4.8 miles SSE BD-05-1 and -2 Gardner (indicator) 5.5 miles SW BD-06-1 and -2 Godley (indicator) 0.5 miles WSW BD-19-1 and -2 Nearsite NW (indicator) 0.3 miles NW BD-20-1 and -2 Nearsite N (indicator) 0.6 miles N BD-21-1 and -2 Nearsite NE (indicator) 0.5 miles NE I. Environmental Dosimetry - OSLD (cont'd)

B-2

TABLE B-1: Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Braidwood Station, 2012 Location Location Description Distance & Direction From Site Control BD-03-1 and -2 13000 W. Road 6.2 miles ESE B-3

TABLE B-2: Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Braidwood Station, 2012 Sample Medium Analysis Sampling Method Analytical Procedure Number Surface Water Gamma Spectroscopy Monthly composite TBE, TBE-2007 Gamma emitting radioisotope analysis from weekly grab samples.

Surface Water Gross Beta Monthly composite TBE, TBE-2008 Gross Alpha and/or Gross Beta activity in from weekly grab various matrices samples.

Surface Water Tritium Quarterly composite TBE, TBE-201 1 Tritium analysis in drinking water by liquid from weekly grab scintillation samples.

Drinking Water Gross Beta Monthly composite TBE, TBE-2008 Gross Alpha and/or Gross Beta activity in from weekly grab various matrices samples.

Drinking Water Gamma Spectroscopy Monthly composite TBE, TBE-2007 Gamma emitting radioisotope analysis from weekly grab samples.

Drinking Water Tritium Quarterly composite TBE, TBE-2011 Tritium analysis in drinking water by liquid from weekly grab scintillation samples.

Drinking Water Iodine Weekly grab and TBE, TBE-2031 Radioactive Iodine in drinking water monthly composite from weekly grab Ground/Well Water Gamma Spectroscopy Quarterly grab TBE, TBE-2007 Gamma emitting radioisotope analysis samples.

Ground/Well Water Tritium Quarterly grab TBE, TBE-2011 Tritium analysis in drinking water by liquid samples. scintillation Fish Gamma Spectroscopy Samples collected TBE-2007 Gamma emitting radioisotope analysis twice annually via electro-shocking or other techniques B-4

TABLE B-2: Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Braidwood Station, 2012 Sample Analysis Sampling Method Analytical Procedure Number Medium Air Particulates Gross Beta One-week composite TBE, TBE-2008 Gross Alpha and/or gross beta activity in of continuous air various matrices sampling through glass fiber filter paper Air Particulates Gamma Spectroscopy Quarterly composite TBE, TBE-2007 Gamma emitting radioisotope analysis of each station Air Iodine Gamma Spectroscopy Weekly composite of TBE, TBE-2007 Gamma emitting radioisotope analysis continuous air sampling through charcoal filter Milk 1-131 Bi-weekly grab TBE, TBE-2012 Radioiodine in various matrices sample May through October. Monthly all other times Milk Gamma Spectroscopy Bi-weekly grab TBE, TBE-2007 Gamma emitting radioisotope analysis sample May through October. Monthly all other times Food Products Gamma Spectroscopy Annual grab TBE, TBE-2007 Gamma emitting radioisotope analysis samples.

OSLD Optically Stimulated Quarterly OSLDs Landauer Incorporated Luminescence comprised of two Dosimetry Al2 0 3 :C Landauer Incorporated elements.

B-5

PMiles P TLD Location Figure B-1 Inner Ring OSLD Locations of the Braidwood Station, 2012 B-6

I. 61

. 2 I 2 4 41

~unLocatinu T*

Figure B-2 Fixed Air Sampling and Outer Ring OSLD Locations of the Braidwood Station, 2012 B-7

is X 087 nftb OFFSMT DOSE CALCUL&TION MANUAL BPJJDWOQI) SATON om.~..3i ~

I 3I 4I 5I FIGURE 11-3 Miles IN240MON AND WATERSOPNE EXPOt3R IPATK~WAY SAMPLE IfCATLONS 8 Water 4D SediMum=

0eris XMilk Figure B-3 Ingestion and Waterborne Exposure Pathway Sample Locations of the Braidwood Station, 2012 B-8

APPENDIX C DATA TABLES AND FIGURES PRIMARY LABORATORY

Intentionally left blank TABLE C-I.1 CONCENTRATIONS OF GROSS BETA IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION BD-10 BD-25 BD-38 BD-40 BD-55 BD-56 PERIOD 01/05/12 - 01/26/12 2.9 + 1.8 10.5 _ 2.4 5.3 t 2.3 10.6 + 2.4 2.9 +/- 1.6 3.7 t 1.8 02/02/12 - 02/23/12 3.1 + 1.3 3.0 + 1.6 4.4 +/- 1.7 9.9 _ 1.9 3.1 +/- 1.1 3.6 t 1.3 03/01/12 - 03/29/12 3.6 +/- 1.5 9.4 _ 1.9 4.6 +/- 1.7 10.2 + 1.9 2.9 +/- 1.3 4.2 +/- 1.6 04/05/12 - 04/26/12 3.9 +/- 1.9 9.1 _ 2.2 7.9 +/- 2.3 8.3 + 2.1 2.8 +/- 1.5 < 2.9 05/03/12 - 05/31/12 4.9 + 1.5 9.0 + 1.7 5.4 + 1.7 10.8 + 1.9 3.1 +/- 1.2 3.4 +/- 1.4 06/07/12 - 06/26/12 4.4 + 1.4 9.8 + 1.7 4.6 + 1.7 9.7 + 1.8 2.7 +/- 1.2 4.7 +/- 1.4 07/05/12 - 07/26/12 3.9 + 1.3 8.4 + 1.6 7.0 + 2.0 9.8 _ 1.9 2.8 +/- 1.1 4.3 +/- 1.4 08/02/12 - 08/30/12 4.9 + 1.4 8.8 + 1.6 6.1 + 1.8 12.1 +/- 2.0 3.1 +/- 1.2 3.3 +/- 1.3 09/06/12 - 09/27/12 3.4 +/- 1.5 10.3 + 2.0 6.7 _ 2.3 10.9 +/- 2.2 3.4 +/- 1.5 < 2.4 10/04/12 - 10/25/12 5.2 + 1.5 7.9 + 1.7 6.3 _ 1.9 11.1 +/- 2.0 2.8 +/- 1.2 4.2 +/- 1.4 11/01/12 - 11/29/12 4.0 + 1.4 10.8 _ 1.8 7.1 + 1.8 11.1 +/- 2.0 1.7 _ 1.0 4.2 +/- 1.4 12/06/12 - 12/27/12 6.3 +/- 1.9 6.6 _ 1.9 7.7 _ 2.2 11.1 +/- 2.3 2.6 _ 1.5 6.4 +/- 1.9 MEAN* 4.2 +/- 2.0 8.6 +/- 4.2 6.1 +/- 2.5 10.5 +/- 1.9 2.8 +/- 0.8 4.2 +/- 1.8 TABLE C-1.2 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION BD-10 BD-25 BD-38 BD-40 BD-55 BD-56 PERIOD 01/05/12 - 03/29/12 < 167 < 168 < 167 < 172 < 175 < 165 04/05/12 - 06/26/12 < 147 < 147 < 180 < 183 < 177 < 146 07/05/12 - 09/27/12 1150 +/- 167 < 160 < 162 < 162 < 177 < 173 10/04/12 - 12/27/12 526 +/- 153 < 181 < 186 < 170 < 183 < 188 MEAN* 838 +/- 684

THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES C-1

TABLE C-I.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-10 01/05/12 - 01/26/12 <2 <2 <6 <3 <4 <3 <5 < 13 <2 <2

22 <9 02/02/12 - 02/23/12 <1 <2 <4 <1 <3 <2 <3 <15 <1 <1

21 <7 03/01/12 - 03/29/12 <1 <1 <3 <1 <2 <2 < 3 <7 <1 <1

13 <4 04/05/12 - 04/26/12 <1 <1 <3 <1 <2 <1 <2 <3 <1 <1 <8 <3 05/03/12 - 05/31/12 <1 <2 <3 <1 <3 <2 <3 <7 <1 <1

13 <4 06/07/12 - 06/26/12 <1 <1 <3 <1 <2 <1 <2 <8 <1 <1

12 <4 07/05/12 - 07/26/12 <3 <3 <8 <4 <8 <4 <7 <10 <4 <3

22 <8 08/02/12 - 08/30/12 <2 <2 <5 <2 <4 <2 <3 <14 <2 <2

22 <8 09/06/12 - 09/27112 <2 <2 <4 <1 <3 <2 <3 <8 <1 <2

14 <5 10/04/12 - 10/25/12 <1 <1 <2 <1 <1 <1 <1 <9 <1 <1 <11 <3 11/01/12 - 11/29112 <4 <5 <9 <5 <10 <5 <8 <11 <5 <5

30 <12 12/06/12 - 12/29/12 <1 <1 <3 <1 <2 <1 <2 <7 <1 <1

12 <3 MEAN BD-25 01/05/12 01/26/12 <2 <3 <6 <2 <5 3 <5

13 <2 <2 < 24 <8 02/02/12 02/23/12 <1 <1 <3 <1 <2 1 <3 *13 <1 <1

18 <5 03/01/12 03/29/12 <2 <2 <5 <2 <4 2 <4

10 <2 <2 <17 <6 04/05/12 04/26/12 <3 <3 <6 <3 <6 3 <5 <7 <3 <3 < 16 <5 05/03/12 05/31/12 <2 <2 <5 <2 <4 2 <4 <9 <2 <2

18 <6 06/07/12 06/26/12 <2 <2 <4 <2 <4 2 <4 <12 <2 <2

21 <6 07/05/12 07/26/12 <4 <4 <11 <5 <11 5 <9 *12 <4 <5

28 <9 08/02/12 08/30/12 <2 <2 <4 <2 <3 2 <3

13 <1 <2 < 20 <6 09/06/12 09/27/12 <2 <2 <5 <2 <4 2 <4 *10 <2 <2

18 <6 10/04/12 10/25/12 <1 <1 <2 <1 <1 1 <2 <12 <1 <1

15 <4 11/01/12 11/29/12 <5 <5 <8 <6 <10 5 <10 <13 <4 <5 < 29 <10 12/06/12 - 12/29/12 <1 <2 <4 <1 <3 <2 <3 <7 <1 <2 <13 <4 MEAN

TABLE C-1.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-38 1/5/2012 - 01/26/12 <3 <3 <8 <3 <6 <4 <5 *14 <3 <3

27 <9 2/212012 - 02123/12 <1 <2 <4 <2 <3 <1 <3 <15 <1 <1

21 <6 3/1/2012 - 03/29/12 <2 <2 <5 <2 <4 <2 <4 <11 <2 <2

20 <6 04/05/12 - 04/26/12 <3 <3 <7 <3 <6 <3 <6 <8 <3 <3

19 <6 05/03/12 - 05/31/12 <2 <3 <6 <2 <5 <3 <5

13 <2 <3

24 <8 06/07/12 - 06/26/12 <2 <2 <4 <2 <4 <2 <4

12 <2 <2

20 <6 07/05/12 - 07/26/12 <5 <5 <11 <5 <9 <4 <9 *13 <4 <4

30 <10 08/02/12 - 08/30/12 <1 <2 <4 <1 <3 <2 <3 *10 <1 <1

16 <5 09/06/12 - 09/27/12 <2 <2 <6 <2 <5 <3 <4 *12 <2 <2

22 <7 10/04/12 - 10/25/12 <1 <1 <2 <1 <1 <1 <2 <12 <1 <1

14 <4 11/01/12 - 11/29/12 <5 <5 <9 <6 <9 <5 <8 <14 <5 <6

31 < 10 12/06/12 - 12/27/12 <2 <3 <6 <2 <5 <3 <5 *14 <3 <3

24 <7 MEAN BD-40 1/5/2012 - 01/26/12 <2 <2 <6 <2 <4 <3 <5 <12 <2 <2

22 <7 2/2/2012 - 02/23/12 <1 <2 <4 <1 <3 <2 <3 <13 <1 <1

20 <7 3/1/2012 - 03/29/12 <2 <2 <5 <2 <4 <2 <4 <9 <2 <2 <18 <6 04/05/12 - 04/26/12 <3 <3 <5 <3 <5 <3 <5 <7 <3 <3

16 <5 05/03/12 - 05/31/12 <2 <2 <5 <2 <4 <2 <4 <10 <2 <2

18 <6 06/07/12 - 06/26/12 <2 <2 <5 <2 <4 <2 <4 <12 <2 <2

22 <8 07/05/12 - 07/26/12 <5 <5 <11 <6 < 12 <6 <9 <14 <4 <5

30 <11 08/02/12 - 08/30/12 <2 <2 <4 <1 <3 <2 <3 *13 <1 <1

21 <7 09106/12 - 09/27/12 <2 <2 <5 <2 <4 <2 <4 <11 <2 <2 < 20 <6 10/04/12 - 10/25/12 <1 <1 <2 <1 <2 <1 <2 <10 <1 <1

14 <4 11/01/12 - 11/29/12 <5 <5 < 10 <5 <10 <6 <9 <13 <5 <5 < 33 <10 12/06/12 - 12/27/12 <1 <2 <4 <1 <3 <2 <3 <8 <1 <1 *14 <4 MEAN

TABLE C-I.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-55 1/5/2012 - 01/26/12 <2 <3 <5 <2 <4 <3 <5 <15 <2 <2

24 <7 2/2/2012 - 02/23/12 <1 <1 <3 <1 <2 <1 <2 <11 <1 <1

17 <5 3/1/2012 - 03/29/12 <2 <2 <4 <1 <3 <2 <3 <8 <2 <2

15 <4 4/5/2012 - 04/26/12 <2 <2 <5 <2 <5 <3 <4 <6 <2 <2

14 <5 5/3/2012 - 05/31/12 <2 <2 <5 <2 <4 <2 <4 <10 <2 <2

18 <6 06/07/12 06/26112 <2 <2 <5 <2 <4 <2 <4 <13 <2 <2

-

21 <7 07/05/12 - 07/26/12 <6 <5 < 12 <4 <11 <6 <11 <15 <5 <6 <34 <9 08/02/12 - 08/30/12 <1 <2 <4 <1 <3 <2 <3 <12 <1 <2

19 <6 09/06/12 - 09/27/12 <2 <2 <5 <2 <4 <2 <4 <11 <2 <2

19 <6 10/04/12 - 10/25/12 <1 <1 <2 <1 <2 <1 <2 <12 <1 <1 *15 <4 11/01/12 - 11/29/12 <4 <5 <13 <5 <8 <5 <8 <14 <5 <5 < 35 <11 12106/12 - 12/27/12 <2 <2 <4 <2 <3 <2 <3 <10 <2 <2

17 <6 MEAN BD-56 01/05/12 - 01/26/12 <3 <3 <8 <3 <6 <3 <5 <14 <2 <3

27 <10 02/02/12 - 02/23/12 <1 <2 <4 <1 <3 <2 <3 <13 <1 <1

18 <7 3/1/2012 - 03/29/12 <2 <2 <4 <2 <4 <2 <3 <9 <2 <2 *17 <6 4/5/2012 - 04/26112 <2 <2 <4 <2 <4 <2 <3 <5 <2 <2 <11 <4 5/3/2012 - 05/31/12 <2 <2 <5 <2 <4 <2 <3 <9 <2 <2

17 <5 06/07/12 - 06/26112 <2 <2 <4 <2 <3 <2 <3 <10 <1 <2

18 <5 07/05/12 - 07/26/12 <5 <5 <11 <4 <10 <6 <9 <13 <4 <5

29 <8 08/02/12 - 08/30/12 <1 <2 <4 <1 <3 <2 <3 <13 <1 <1

20 <6 09/06/12 - 09/27/12 <2 <2 <5 <2 <4 <2 <4 <12 <2 <2

20 <7 10/04/12 - 10/25/12 <1 <1 <2 <1 <2 <1 <2 <13 <1 <1 <15 <4 11/01/12 - 11/29/12 <2 <3 <8 <3 <4 <3 <4 <7 <2 <3

19 <8 12/06/12 12127/12 <2 <2 <5 <2 <4 <2 <4 <10 <2 <2

-

17 <6 MEAN

TABLE C-I1.1 CONCENTRATIONS OF GROSS BETA IN PUBLIC WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER 12 SIGMA COLLECTION BD-22 PERIOD 12/29/11 02/02/12 < 2.3 02/02/12 03/01/12 7.4 +/- 1.7 03/01/12 03/29/12 < 3.1 03/29/12 05/03/12 2.9 +/- 1.1 05/03/12 05/31/12 3.0 +/- 1.5 05/31/12 07/05/12 3.2 +/- 1.1 07/05/12 08/02/12 5.4 +/- 2.1 08/02/12 08/30/12 4.0 +/- 1.1 08/30/12 09/27/12 3.8 +/- 1.3 09/27/12 11/01/12 5.9 +/- 1.5 11/01/12 11/29/12 3.8 +/- 1.2 11/29/12 01/03/13 2.8 +/- 1.5 MEAN 4.2 +/- 3.0 TABLE C-I1.2 CONCENTRATIONS OF TRITIUM IN PUBLIC WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION BD-22 PERIOD U

12/29/11 - 02/02/12 < 189 02102/12 - 03/01/12 361 +/- 131 03/01/12 - 03/29/12 606 +/- 140 03/29/12 - 05/03/12 < 187 05/03/12 - 05/31/12 198 +/- 116 05/31/12 - 07/05/12 < 184 07/05/12 - 08/02/12 451 +/- 154 08/02/12 - 08/30/12 420 +/- 147 08/30/12 - 09127/12 1730 +/- 232 09/27/12 - 11/01/12 3370 +/- 387 11/01/12 - 11/29/12 1160 +/- 177 11/29/12 - 01/03/13 655 +/- 137 MEAN* 995 +/- 2017 TABLE C-11.3 CONCENTRATIONS OF 1-131 IN PUBLIC WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION BD-22 PERIOD U

12/29/11 - 02/02/12 < 0.7 02/02/12 - 03/01/12 < 0.7 03/01/12 - 03/29/12 < 0.5 03/29/12 - 05/03/12 < 0.8 05/03/12 - 05/31/12 < 0.6 05/31/12 - 07/05/12 < 0.8 07105112 - 08102/12 <0.7 08/02/12 - 08/30/12 < 0.7 08/30/12 - 09/27/12 < 0.7 09/27/12 - 11/01/12 < 0.7 11/01/12 - 11/29/12 < 0.6 11/29/12 - 01/03/13 < 0.7 MEAN THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES C-5

TABLE C-1I.4 CONCENTRATIONS OF GAMMA EMITTERS IN PUBLIC WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-22 12/29/11 - 02102/12 <4 <4 <7 <3 <9 <5 <7 <13 <4 <4

25 <9 02/02/12 - 03/01/12 <4 <4 <10 <4 <8 <5 <7

12 <3 <4 < 25 < 10 03/01/12 - 03129/12 <1 <1 <3 <1 <2 <1 <2 <4 <1 <1 <9 <3 03/29/12 - 05103112 <2 <2 <4 <2 <4 <2 <3 <6 <2 <2

14 <4 05/03/12 - 05/31/12 <1 <1 <3 <1 <2 <1 <2 <11 <1 <1 <14 <4 05/31/12 - 07/05/12 <2 <2 <5 <2 <4 <2 <4 11 <2 <2

20 <7 07/05112 - 08102112 <2 <2 <5 <2 <4 <2 <3 <5 <2 <2

12 <4 08/02/12 - 08/30/12 <2 <2 <5 <2 <3 <2 <4 <15 <1 <2

23 <9 08/30112 - 09127/12 <1 <1 <2 <1 <2 <1 <2 15 <1 <1

18 <6 09/27/12 - 11/01/12 <3 <3 <8 <3 <6 <4 <7 <1 <3 <3 < 42 < 13 11/01/12 - 11/29/12 <2 <2 <4 <2 <3 <2 <3 <9 <1 <2

16 <5 11/29/12 - 01103/13 <2 <2 <4 <2 <3 <2 <3 <9 <2 <2 <16 <5 MEAN

TABLE C-II1.1 CONCENTRATIONS OF TRITIUM IN GROUND/WELL WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION BD-13 BD-34 BD-35 BD-36 BD-37 BD-50 BD-51 BD-54 PERIOD 01/19/12 -01/19/12 < 182 < 170 < 170 < 170 < 168 < 169 < 179 < 172 04/12/12 - 04/12/12 < 171 < 170 < 169 < 183 < 197 < 195 < 197 < 197 07/12/12 - 07/12/12 < 160 < 160 < 160 < 172 < 160 < 160 < 160 < 160 10/11/12 -10/11/12 < 159 < 158 < 159 < 177 < 159 < 162 < 175 < 159 MEAN - - - - - - - -

C-7

TABLE C-1II.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUND/WELL WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-13 01/13/12 - 01/13/12 < 4 <5 <9 <4 <11 <5 <9 <11 <5 <4

28 < 10 04112/12 - 04/12/12 < 4 <5 <12 <5 <11 <5 <9 <12 <5 <5 <26 < 10 07/12/12 - 07/12/12 < 4 <4 <9 <4 <9 <4 <8 <10 <4 <4 <22 <8 10111/12 - 10/11/12 < 3 <4 <9 <4 <7 <4 <6 <10 <3 <3 <21 <6 MEAN BD-34 01/19/12 - 01/19/12 < 4 <5 <10 <5 <10 <5 <7 <12 < 5 <5 < 31 < 10 04/12/12 - 04/12/12 < 5 <5 <10 <5 <9 <5 <9 <12 <4 <5 <27 <8 07/12/12 - 07/12/12 < 5 <4 <9 <4 <9 <5 <8 <11 <4 <5 <25 <9 10111/12 - 10/11/12 < 5 <5 <11 <.5 <9 <6 < 10 < 14 < 4 <4 <36 <8 MEAN 80 BD-35 01/19/12 - 01/19112 < 4 <5 <11 <5 <10 <6 <9 <12 <4 <5 <33 <8 04/12/12 - 04/12/12 < 4 <4 <11 <4 <11 <5 <9 <11 < 5 <5 < 26 < 13 07/12/12 - 07/12/12 < 4 <5 <9 <4 <9 <5 <8 <9 <4 <5 <23 <9 10/11/12 - 10/11/12 < 4 <4 <11 <4 < 11 <6 < 10 < 13 < 5 <5 <30 < 7 MEAN BD-36 01/19/12 - 01/19/12 < 4 <5 <11 <5 <11 <6 <9 <12 < 5 <5 <28 < 13 04/12/12 - 04/12/12 < 5 <5 <8 <6 <10 <5 <9 <12 <4 <5 <31 < 11 07/12/12 - 07/12/12 < 4 <4 <9 <4 <8 <4 <7 <12 <4 <5 <29 <8 10/11/12 - 10/11/12 < 4 <4 <10 <5 <9 <5 <9 <12 < 4 <5 <29 <8 MEAN BD-37 01/19/12 - 01/19/12 < 4 <4 <7 <4 <8 <5 <7 <12 <4 <4 <27 <6 04/12/12 - 04/12/12 < 5 <7 <14 <5 <13 <7 <9 <15 <5 <6 < 35 < 13 07/12/12 - 07/12/12 < 4 <4 <7 < 4 <6 <5 <6 <8 <3 <4 <21 <8 10/11/12 - 10/11/12 < 4 <5 <9 <4 < 9 <5 <7 <12 <4 <4 <26 <7 MEAN

TABLE C-B11.2 CONCENTRATIONS OF GAMMA EMITTERS iN GROUNDIWELL WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-50 01/19/12 - 01/19/12 <5 <6 <11 <5 411 <6 <9 14 <5 <5

31 <10 04/12/12 - 04/12/12 <5 <5 *10 <5 <9 <5 <9 12 <5 <5 < 34 <9 07/12112 - 07/12/12 <4 <4 <10 <5 <8 <5 <7 11 4 <4 < 24 < 10 10/11/12- 10/11112 <4 <4 <11 <4 <7 <5 <8 10 4 <4 < 26 <8 MEAN BD-51 01/13/12 - 01/13/12 <5 <5 411 <4

10 <5 <8 10 <5 <5

30 <9 04/12/12 - 04/12/12 <5 <5 <11 <5

10 <5 <9 11 4 <5

30 <7 07/12/12 - 07/12/12 <5 <5 <10 <4 <9 <4 <9 10 <3 <5

26 <7 10/11/12 - 10/11/12 <4 <5 <9 <3 <9 <5 <8 13 4 <4

30 <8 MEAN BD-54 01/13/12 - 01/13/12 <4 <4 <8 <5 <9 <5 <5 11 4 <4

25 < 12 04/12/12 - 04112/12 <5 <5 <10 <6 < 13 <6 <7 12 <6 <5

30 < 11 07/12/12 - 07/12/12 <4 <4 <11 <5 <9 <5 <9 12 4 <5

31 <9 10/11/12 - 10/11/12 <4 <5 <9 <4 < 10 <5 <8 11 4 <4 < 26 <7 MEAN

TABLE C-IV.1 CONCENTRATIONS OF GAMMA EMITTERS IN FISH SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA SITE COLLECTION Mn-54 0o-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-25 Channel Catfish 05/08/12 < 36 < 36 < 72 <35 <69 < 39 < 64 < 121 < 33 < 33 < 252 < 70 Golden Redhorse 05/08/12 < 14 < 18 < 52 < 16 < 50 < 19 < 35 < 81 < 19 < 20 < 162 < 33 Channel Catfish 10/02/12 < 47 < 56 < 97 < 65 < 107 < 52 < 112 < 209 < 45 < 54 < 506 < 151 Golden Redhorse 10/02/12 < 65 < 54 < 137 < 56 < 146 < 73 < 113 < 372 < 62 < 48 < 603 < 181 MEAN BD-28 Largemouth Bass 05/08/12 < 48 < 49 < 111 < 37 < 95 < 52 < 92 < 196 < 51 < 52 < 400 < 96 Quillback 05/08/12 < 49 < 57 < 115 < 60 < 113 < 57 < 103 < 200 < 47 < 48 < 421 < 107 Common Carp 10/02/12 < 61 < 63 < 131 < 52 < 110 < 81 < 125 < 303 < 50 < 62 < 605

128 0 Golden Redhorse 10/02/12 < 54 < 52 < 167 <69 < 130 <82 < 139 < 291 < 61 < 61 < 658

142 MEAN BD-41 Common Carp 05108/12 < 66 < 67 < 137 < 53 < 130 < 82 < 130 < 285 < 60 < 67 < 518 < 156 Largemouth Bass 05108/12 < 43 < 44 < 98 < 38 < 82 < 53 < 77 < 162 < 43 < 45 < 357 < 128 Common Carp 10/02/12 < 102 < 93 < 180 < 78 < 193 < 98 < 178 < 509 < 80 < 92 < 936 < 163 Largemouth Bass 10/02/12 < 68 < 76 < 187 < 88 < 126 < 80 < 120 < 408 < 71 < 83 < 730 < 246 MEAN

TABLE C-V.1 CONCENTRATIONS OF GAMMA EMITTERS IN SEDIMENT SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/KG DRY +/- 2 SIGMA SITE COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-10 05/10/12 < 58 < 58 < 133 < 73 < 145 < 70 < 117 < 60 205 +/- 79 <413 < 104 10/04/12 < 85 < 88 < 209 < 100 < 210 < 114 < 190 < 67 < 112 < 730 < 281 MEAN BD-57 05/10/12 < 58 < 68 < 133 < 76 < 152 < 72 < 118 < 61 122 +/- 63 < 409 < 115 10/05/12 < 76

81 < 218 < 84 < 165 < 111 < 155 < 70 < 92 < 1239 < 380 MEAN

TABLE C-VI.1 CONCENTRATIONS OF GROSS BETA IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA COLLECTION GROUP I I GROUP 11 IGROUP III PERIOD BD-06 BD-19 BD-20 BD-21 BD-02 BD-04 BD-05 BD-03 U 12/*29/i 1 01/05/i2 19 +/- 4 18 t 4 18 +/- 4 16 t 4 15 +/- 4 19 t 4 14 +/- 4 19 +/- 4 01/05/12 01/12/12 24 +/- 5 19 t 5 21 +/- 5 20 t 5 24 +/- 5 21 +/- 5 21 +/- 5 20 +/- 5 01/12/12 01/19/12 23 +/- 5 18 t 4 24 +/- 5 23 +/- 5 16 +/- 4 25 +/- 5 (1) 23 +/- 5 01/19/12 01/26/12 23 +/- 4 24 t 5 24 +/- 5 22 +/- 4 26 +/- 5 28 +/- 5 +/-5 29 +/- 5 01/26/12 02/02/12 18 +/- 4 15 t 4 16 +/- 4 13 +/- 4 18 +/- 4 15 +/- 4 +/-4 16 +/- 4 02/02/12 02/09/12 21 +/- 5 19 t 5 19 +/- 5 17 +/- 5 21 +/- 5 20 +/- 5 +/-5 23 +/- 5 02/09/12 02/16/12 17 +/- 4 17 t 4 18 +/- 4 17 +/- 4 14 +/- 4 18 +/- 4 +/-4 19 +/- 4 02/16/12 02/23/12 23 +/- 4 19 t 4 20 +/- 4 18 +/- 4 18 +/- 4 19 +/-4 +/-4 16 +/- 4 02/23/12 03/01/12 21 +/- 5 21 +/- 5 21 +/- 5 19 +/- 5 18 +/- 5 24 +/-5 +/-5 20 +/- 5 03/01/12 03/08/12 17 +/- 4 18 +/- 4 18 +/- 4 18 +/- 4 18 +/- 4 18 +/-4 +/-5 16 +/- 4 03/08/12 03/15/12 20 +/- 4 22 +/- 5 17 +/- 4 22 +/- 5 18 +/- 4 20 +/-5 +/-4 20 +/- 4 03/15/12 03/22/12 15 +/- 4 20 +/- 5 17 +/- 4 15 +/- 4 16 +/- 4 12 +/-4 +/-4 17 +/- 4 03/22/12 03/29/12 12 +/- 4 14 +/-4 16 +/- 4 13 +/- 4 11 +/-4 17 +/-4 +/-4 12 +/- 4 03/29/12 04/05/12 11 +/-4 11 +/-4 10 +/- 4 12 +/- 4 11 +/-4 13 +/-4 +/-4 9+/-4 04/05/12 04/12/12 12 +/-4 9+/-4 13 t 4 16 +/- 4 14 +/-4 12 +/-4 +/-4 13 +/-4 04/121 12 04/19/12 18 +/-4 18 +/-4 18 +/- 4 16 +/- 4 16 +/-4 14 +/-4 +/-4 18 +/-4 04/19/12 04/26/12 18 +/-4 18 +/-4 14 +/- 4 17 +/- 4 15 +/-4 16 +/-4 +/-4 14 +/-4 04/26/12 05/03/12 22 +/-5 14 +/-4 17 +/- 5 18 +/- 5 16 +/-5 16 +/-5 +/-4 18 +/-5 05/03/12 05/10/12 11 +/-4 11 +/-4 10 +/-4 6+/-3 10 +/-4 7+/-3 +/-4 13 +/-4 05/10/12 05/17/12 13 +/-4 13 +/-4 14 +/-4 11 +/-4 13 +/-4 12 +/-4 +/-4 13 +/-4 05/17/12 05/24/12 17 +/- 4 20 +/-4 16 +/-4 16 +/-4 19 +/-4 17 +/- 4 +/-4 19 +/-4 05/24/12 05/31/12 12 +/- 4 13 +/-4 17 +/-4 16 +/-4 14 +/-4 14 +/- 4 +/-4 14 +/-4 05/31/12 06/07/12 11 +/-4 11 +/-4 11 +/-4 11 +/-4 8+/-4 13 +/- 4 +/-4 13 +/-4 06/07/12 06/14/12 17 +/-4 12 +/-4 13 +/-4 10 +/-4 12 +/-4 16 +/- 4 +/-4 16 +/-4 06/14/12 06/21/12 19 +/-4 14 +/- 4 18 +/-4 17 +/-4 17 +/-4 17 +/- 4 +/-4 12 +/-4 06/21/12 06/26/12 19 +/-6 23 +/- 6 15 +/-6 15 +/-6 15 +/-6 19 +/-6 +/-6 21 +/-6 06/26/12 07/05/12 28 +/-4 26 +/- 4 27 +/-4 30 +/-4 25 t 4 28 +/-4 +/-4 31 +/-4 07/05/12 07/12/12 22 +/-4 20 +/- 4 23 +/-4 20 +/- 4 19 +/- 4 20 +/-4 +/-4 19 +/- 4 07/12/12 07/19/12 27 +/- 5 18 +/- 4 23 +/-5 25 +/- 5 21 +/- 5 25 +/-5 +/-4 25 +/- 5 07/19/12 07/26/12 21 +/- 4 25 +/- 5 22 +/-4 19 +/- 4 22 +/- 4 22 +/-4 +/-5 20 +/- 4 07/26/12 08/02/12 21 +/- 4 20 +/- 4 21 +/-4 18 +/- 4 17 +/- 4 23 +/-5 +/-4 19 +/- 4 08/02/12 08/09/12 18 +/- 4 33 +/- 12 23 5 22 +/- 4 26 +/- 5 25 +/-5 +/-5 21 +/- 4 08/09/12 08/16/12 18 +/- 4 20 +/- 5 17 +/-4 21 +/- 5 23 +/- 5 22 +/-5 +/-5 22 +/- 5 08/16/12 08/23/12 18 +/- 4 15 +/- 4 18 +/-4 17 +/- 4 20 +/- 4 25 +/-5 +/-5 18 +/- 4 08/23/12 08/30/12 26 +/- 5 25 +/- 5 23 +/-5 26 +/- 5 32 +/- 5 30 +/-5 +/-5 27 +/- 5 08/30/12 09/06/12 27 +/- 5 23 +/- 5 20 +/-5 21 +/- 5 21 +/- 5 21 +/-5 +/-5 17 +/- 5 09/06/12 09/13/12 25 +/- 5 21 +/- 4 22 +/-4 26 +/- 5 26 +/- 5 26 +/-5 23 +/- 5

+/-5 09/13/12 09/20/12 24 +/- 5 17 +/- 4 21 +/-4 23 +/- 5 21 +/- 4 23 +/- 5 20 +/- 4

+/-5 09/20/12 09/27/12 23 +/- 4 20 +/- 4 24 +/- 4 24 +/- 4 21 +/- 4 23 +/- 4 25 +/- 4

+/-5 09/27/12 10/04/12 24 +/- 5 24 +/- 5 26 +/- 5 19 +/- 4 25 +/- 5 31 +/- 5 27 +/- 5 10/04/12 10/11/12 13 +/- 4 14 +/- 4 16 +/- 4 21 +/- 4 14 +/- 4 17 +/- 4 +/-4 18 +/- 4 10/11/12 10/18/12 28 +/- 5 27 +/- 5 24 +/- 5 29 +/- 5 26 +/- 5 28 +/- 5 +/-5 29 +/- 5 10/18/12 10/25/12 21 +/- 5 19 +/- 5 18 +/- 4 21 +/- 5 22 +/- 5 18 +/- 5 +/-5 21 +/- 5 10/25/12 11/01/12 12 +/- 4 16 +/- 4 14 +/- 4 16 +/- 4 17 +/- 4 15 +/- 4 +/-4 15 +/- 4 11/01/12 11/08/12 14 +/- 4 14 +/- 4 16 +/- 4 16 +/- 4 19 +/- 5 20 +/- 5 +/-5 18 +/- 4 11/08/12 11/15/12 26 +/- 4 26 +/- 4 22 +/- 4 31 +/- 5 27 +/- 4 31 +/- 5 +/-5 27 +/- 4 11/15/12 11/21/12 43 +/- 6 42 +/- 6 40 +/- 6 40 +/- 6 44 +/- 7 44 +/- 7 +/-6 36 +/- 6 11/21/12 11/29/12 36 +/- 5 39 +/- 5 36 +/- 5 41 +/- 6 39 +/- 5 33 +/- 5 +/-5 41 +/- 6 11/29/12 12/06/12 30 +/- 5 33 +/- 5 31 +/- 5 33 +/- 5 31 +/- 5 29 +/- 5 +/-5 33 +/- 5 12/06/12 12/13/12 25 +/- 5 29 +/- 5 25 +/- 5 26 +/- 5 26 +/- 5 27 +/- 5 +/-5 25 +/- 5 12/13/12 12/20/12 48 +/- 6 35 +/- 6 40 +/- 6 38 +/- 6 36 +/- 6 43 +/- 6 +/-6 39 +/- 6 12/20/12 12/27/12 19 +/-5 22 +/- 5 17 +/- 4 16 +/- 4 16 +/- 4 22 +/- 5 +/-5 18 +/- 5 12/27/12 01/03/13 47 +/-6 47 +/- 6 43 +/- 6 45 +/- 6 48 +/- 6 43 +/- 6 +/-6 42 +/- 6 MEAN 21 +/-16 21 +/-16 20 +/-14 21 +/-16 21 +/-16 22 +/-16 22 +/-16 21 +/-15 (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-12

TABLE C-VI.2 MONTHLY AND YEARLY VALUES OF GROSS BETA CONCENTRATIONS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA GROUP I - NEAR FIELD LOCATIONS GROUP II - FAR FIELD LOCATIONS GROUP III - CONTROL LOCATIONS COLLECTION MIN MAX MEAN +/- COLLECTION MIN MAX MEAN + COLLECTION MIN MAX MEAN +/-

PERIOD 2SD PERIOD 2SD PERIOD 2SD 1 ZIZ11 1 - UZIUZ/] Z 13 24 20 +/- 7 12/29/11 - 02/02/12 14 29 20 +/- 10 12i/29/11 - 02/02/12 16 29 22 +/- 10 02/02/12 - 03/01/12 17 23 19 +/- 4 02/02/12 - 03/01112 14 24 19 +/- 6 02/ 02/12 - 03/01/12 16 23 20 +/- 6 03/01/12 - 03/29/12 12 22 17 +/- 6 03/01/12 - 03/29/12 11 22 16 +/- 7 03/101112 - 03/29/12 12 20 16 +/- 7 03/29/12 - 05/03/12 9 22 15 +/- 7 03/29/12 - 05/03/12 10 20 14 +/- 5 03//29/12 - 05/03/12 9 18 14 +/- 7 05/03/12 - 05/31/12 6 20 14 +/- 7 05/03/12 - 05/31/12 7 19 14 +/- 8 05//03/12 - 05/31/12 13 19 15 +/- 5 05/31/12 - 07/05/12 10 30 17 +/- 12 05/31/12 - 07105112 8 31 17 +/- 13 05/'31/12 - 07/05/12 12 31 19 +/- 15 07/05/12 - 08/02/12 18 27 22 +/- 5 07/05/12 - 08/02/12 17 27 21 +/- 6 07/105112 - 08/02/12 19 25 21 +/- 6 08/02/12 - 08/30/12 15 33 21 +/- 9 08102112 - 08/30/12 20 32 25 +/- 7 08/102/12 - 08/30/12 18 27 22 +/- 8 08/30/12 - 10/04/12 17 27 23 +/- 5 08/30/12 - 10/04/12 21 31 24 +/- 6 08/'30/12 - 10/04/12 17 27 22 +/- 8 10/04/12 - 11/01/12 12 29 19 +/- 11 10/04/12 - 11/01/12 13 28 20 +/- 11 10//04/12 - 11/01/12 15 29 21 +/- 11 11/01/12 - 11/29/12 14 43 30 +/- 22 11/01/12 - 11/29/12 19 44 32 +/- 19 11/ /01/12 - 11/29/12 18 41 30 +/- 21 11/29/12 - 01/03/13 16 48 32 +/- 21 11/29/12 - 01/03/13 16 48 33 +/- 19 11/ /29/12 - 01/03/13 18 42 32 +/- 20 12/29/11 - 01/03/13 6 48 21 +/- 15 12/29/11 - 01/03/13 7 48 21 +/- 16 12/29/11 - 01/03/13 9 42 21 +/- 15

TABLE C-VI.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED INTHE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA SITE COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-02 12/29111 - 03/29/12 <3 <4 <9 <3 <7 <4 <8 <3 <3 < 35 <9 03/29/12 - 07/05/12 <3 <4 <6 <3 <9 <4 <5 <4 <2 < 34 < 12 07/05/12 - 10/04112 <2 <3 <7 <2 <7 <3 <4 <2 <2

72 < 46 10/04/12 - 01/03/13 <2 <3 <5 <3 <6 <4 <7 <3 <3

36 *15 MEAN BD-03 12/29/11 - 03/29/12 <3 <3 <4 <2 <4 <2 <3 <2 <2

19

10 03/29/12 <3 <3 <3 <7 <2 <6 <3 <3 <34

12

- 07/05/12 <5 07/05/12 - 10/04/12 <2 <3 < 14 <3 <7 <3 <6 <3 <3 < 81 < 49 10104/12 - 01/03/13 <3 <3 <7 <3 <6 <3 <6 <3 <3 < 36 <11 MEAN BD-04 12/29/11 - 03/29/12 <3 <4 <8 <3 <8 <4 <6 <3 <4 < 26 <9 03/29/12 - 07/05/12 <2 <3 <7 <2 <8 <3 <6 <3 <2

32

12 07/05112 - 10/04/12 <3 <4 < 12 <3 <8 <4 <8 <4 <3 <96 < 33 10/04/12 - 01/03/13 <2 <3 <8 <3 <6 <3 <5 <3 <2 < 31

10 MEAN BD-05 12/29/11 - 03129/12 <2 <2 <5 <2 <3 <3 <4 <2 <2

23 <4 03/29/12 - 07/05112 <2 <2 <7 <3 <6 <3 <6 <3 <3

30 <11 07/05/12 - 10/04/12 <2 <3 <8 <3 <10 <4 <6 <4 <3

87 <36 10/04/12 - 01103/13 <2 <3 <5 <3 <7 <3 <6 <3 <3

29 < 10 MEAN BD-06 12129/11 - 03/29/12 <5 <7 <10 <3 <9 <7 < 12 <5 <5 < 47 <9 03/29/12 07/05/12 <4 <3 <3 <8 <4 <5 <4 <3 < 40 < 19

- <8 07/05/12 10/04/12 <3 < 3 <7 <4 <7 <3 <2

87 < 32

- <4 < 10 10/04/12 01/03/13 <2 <2 <2 <4 <3 <4 <2 <1 < 27 <9

- <4 MEAN

TABLE C-VI.3 CONCENTRATIONS OF GAMMA EMITTERS INAIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA SITE COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-19 12/29/11 - 03/29/12 <2 <2 <5 <2 <6 <3 <5 <2 <2 < 17 <7 03/29/12 - 07/05/12 <2 <2 <6 <2 <5 <2 <4 <2 <2

24

10 07/05/12 - 10/04/12 <3 <5 <11 <3 <8 <5 <9 <3 <2

117

32 10/04112 - 01/03/13 <2 <4 <7 <3 <6 <3 <6 <3 <2

31 <11 MEAN BD-20 12/29/11 - 03/29/12 <3 <3 <6 <3 <8 <3 <5 <3 <3 < 20 *10 03/29/12 - 07/05/12 <3 <4 <7 <3 <7 <4 <6 <4 <3 < 43

13 07/05/12 - 10/04/12 <4 <5 < 15 <4 <11 <5 <6 <4 <4

137

38 10(04112 - 01/03/13 <2 <3 <7 <3 <5 <3 <4 <3 <2

32 <9 MEAN BD-21 12/29/11 - 03/29/12 <3 <3 <7 <3 <6 <4 <5 <3 <2 <19 <6 03/29/12 - 07/05/12 <2 <2 <2 <2 <5 <3 <5 <2 <1

25 <8 07/05/12 - 10/04/12 <3 <3 <7 <2 <6 <3 <6 <3 <2 < 61 < 30 10/04/12 - 01/03/13 <2 <3 <7 <2 <6 <2 <5 <3 <2 < 28 <9 MEAN

TABLE C-VII.1 CONCENTRATIONS OF 1-131 IN AIR IODINE SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA COLLECTION GROUP I GROUP II I GROUP III PERIOD BD-06 BD-19 BD-20 BD-21 BD-02 BD-04 BD-05 BD-03 12129111 - 01105112 < 42 < 22 < 42 < 42 < 47 < 45 < 47 < 47 01/05/12 - 01/12/12 < 36 < 36 < 36 < 36 < 44 < 44 < 44 < 44 01/12/12 - 01/19/12 < 57 < 57 < 31 < 57 < 44 < 43 < 57 < 44 01/19/12 - 01/26/12 < 44 < 44 < 44 < 44 < 39 < 39 < 39 < 39 01/26/12 - 02/02/12 < 30 < 30 < 30 < 16 < 48 < 48 < 48 < 48 02/02/12 - 02/09/12 < 48 < 48 < 48 < 48 < 59 < 59 < 59 < 59 02/09/12 - 02/16/12 < 62 < 39 < 40 < 40 < 26 < 62 < 62 < 62 02/16/12 - 02/23/12 < 24 < 24 < 24 < 24 < 28 < 28 < 29 < 28 02/23/12 - 03/01/12 < 55 < 44 < 44 < 44 < 55 < 55 < 55 < 21 03/01/12 - 03/08/12 < 39 < 39 < 39 < 39 < 37 < 37 < 37 < 37 03/08/12 - 03/15/12 < 38 < 41 < 41 < 41 <38 < 16 < 38 < 38 03/15/12 - 03/22/12 < 25 < 25 < 25 < 26 < 35 < 36 < 36 < 35 03/22/12 - 03/29/12 < 27 < 27 < 27 < 27 < 29 < 29 < 12 < 29 03/29/12 - 04/05/12 < 46 < 46 < 46 < 46 < 48 < 50 < 50 < 50 04/05/12 - 04/12/12 < 28 < 12 < 28 < 28 < 45 < 45 < 45 < 45 04/12/12 - 04119/12 < 55 < 55 < 55 < 55 < 60 < 60 < 62 < 60 04/19/12 - 04/26112 < 42 < 42 < 22 < 43 < 64 < 64 < 64 < 64 04/26/12 - 05/03/12 < 52 < 52 < 52 < 52 < 50 < 50 < 50 < 50 05/03/12 - 05/10/12 < 27 < 27 < 27 < 11 < 37 < 37 < 37 < 37 05/10/12 - 05/17/12 < 44 < 44 < 44 < 45 < 37 < 37 < 37 < 37 05/17/12 - 05/24/12 < 28 < 45 < 45 < 46 < 15 <28 < 28 < 28 05/24/12 - 05/31/12 < 51 < 51 < 51 < 51 < 65 < 65 < 65 < 65 05/31/12 - 06/07/12 < 45 < 34 < 34 < 34 < 45 < 45 < 45 < 15 06/07/12 - 06/14/12 < 65 < 66 < 66 < 66 < 53 < 53 < 53 < 53 06/14/12 - 06/21/12 < 47 < 47 < 47 < 47 <31 < 17 < 31 < 31 06/21/12 - 06/26/12 < 48 < 47 < 48 < 48 < 69 < 69 < 69 < 70 06/26/12 - 07/05/12 < 19 < 22 < 22 < 22 < 19 < 19 <7 < 19 07/05/12 - 07/12/12 < 62 < 62 < 62 < 62 < 63 < 63 < 64 < 63 07/12/12 - 07/19/12 < 49 < 21 < 49 < 49 < 59 < 58 < 58 < 58 07/19/12 - 07/26/12 < 56 < 56 < 56 < 56 < 66 < 66 < 66 < 66 07/26/12 - 08/02/12 < 70 < 70 < 28 < 70 < 62 < 62 < 62 < 62 08/02/12 - 08/09/12 < 32 < 60 < 32 < 32 < 24 < 25 < 25 < 25 08/09/12 - 08/16/12 < 46 < 46 < 46 < 18 < 35 < 35 < 35 < 35 08/16/12 - 08/23/12 < 34 < 34 < 35 < 35 < 30 < 30 < 30 < 30 08/23/12 - 08/30112 < 25 < 25 < 25 < 25 < 14 <34 < 34 < 34 08/30/12 - 09/06/12 < 53 < 53 < 53 < 53 < 45 < 44 < 45 < 45 09/06/12 - 09/13/12 < 52 < 52 < 52 < 52 < 64 < 68 < 68 < 28 09/13/12 - 09/20/12 < 36 < 36 < 36 < 36 < 42 < 42 < 42 < 42 09/20/12 - 09/27/12 < 38 < 38 < 38 < 38 < 55 < 23 < 56 < 55 09/27/12 - 10/04/12 < 60 < 60 < 60 < 60 < 44 < 44 < 44 < 44 10/04/12 - 10/11/12 < 55 < 47 < 47 < 47 < 54 < 51 < 21 < 54 10/11/12 - 10/18/12 < 35 < 35 < 36 < 36 < 39 < 40 < 40 < 40 10/18/12 - 10/25/12 < 14 < 36 < 36 < 36 < 38 < 38 < 38 < 38 10/25/12 - 11/01/12 < 33 < 33 < 33 < 33 < 39 < 39 < 39 < 39 11/01/12 - 11/08/12 < 43 < 17 < 43 < 43 < 50 < 51 < 51 < 50 11/08/12 - 11/15/12 < 68 < 68 < 68 < 68 < 38 < 38 < 38 < 38 11/15/12 - 11/21/12 < 60 < 60 < 25 < 60 < 46 < 46 < 46 < 47 11/21/12 - 11/29/12 < 28 < 28 < 28 < 28 < 21 < 21 < 21 <21 11/29/12 - 12/06/12 < 40 < 40 < 40 < 17 < 31 < 31 < 31 < 31 12/06/12 - 12/13/12 < 38 < 38 < 38 < 38 < 35 < 35 < 35 < 35 12/13/12 - 12/20/12 < 32 < 32 < 32 < 32 < 14 < 24 < 24 < 24 12/20/12 - 12/27/12 < 44 < 44 < 44 < 44 < 47 < 48 < 48 < 48 12/27/12 - 01/03/13 < 55 < 55 < 55 < 55 < 29 < 69 < 69 < 69 MEAN C-16

TABLE C-VIII.1 CONCENTRATIONS OF 1-131 IN MILK SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA CONTROL FARM IINDICATOR FARM COLLECTION BD-18 BD-17 PERIOD 01/05/12 < 0.6 < 0.7 02/02/12 < 0.6 < 0.6 03/01/12 < 0.5 < 0.6 04/05/12 < 0.4 < 0.4 05/03/12 < 0.5 <0.5 05/17/12 < 0.5 < 0.4 05/31/12 < 0.5 < 0.5 06/14/12 < 0.8 < 0.7 06/26/12 < 0.5 < 0.5 07/12/12 < 0.7 < 0.6 07/26/12 < 0.8 < 0.8 08/09/12 <0.7 < 0.5 08/23/12 <0.7 < 0.6 09/06/12 < 0.8 < 0.7 09/20/12 < 0.6 < 0.6 10/04/12 < 0.8 < 0.8 10/18/12 < 0.7 < 0.6 11/01/12 < 0.7 < 0.6 12/07/12 < 0.5 < 0.6 MEAN C- 17

TABLE C-VIII.2 CONCENTRATIONS OF GAMMA EMITTERS IN MILK SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-17 01/05/12 < 8 <8 <16 <10

25 <7 *13 <7 <8 < 39 <11 02/02/12 < 5 <6 <13 <7

12 <8 <13 <6 <7

40 <8 03/01/12 < 4 <4 <9 <4

10 <5 <8 <4 <4 < 26 <7

< 5 *13 <7 <9 <5 <6

29 <11 04105/12 <6 <14 <7 05/03/12 < 8 <8 <19 <9

21 <8 <12 <8 <8 < 55 <13 05/17/12 <5 <5 <15 <7

13 <6 <10 <5 <6

31 <10 05/31/12 < 6 <6

12 <6 13 <6 <11 <5 <5 < 37 <8 06/14/12 < 4 <5 <11 <5 11 <5 <9 <4 <4

29 <7

(~2 < 5 <13 <7

15 <6 <12 <6 <6 < 35 <11 06126/12 <6 00 07/12112 < 6 <6

14 <7 <15 <7 <11 <6 <7 < 36 <9 07/26/12 < 4 <5 <12 <6 <9 <5 <10 <4 <4 < 33 <8 08/09/12 < 4 <5 <11 <7 < 12 <6 <9 <5 <5

23 <6 08/23/12 < 4 <4 <11 <5 <9 <4 <8 <4 <4

28 <9 09/06/12 < 4 <5 <11 <5 <11 <4 <9 <4 <4

29 <7 09/20/12 < 6 <7 <14 <7

14 <6 <9 <6 <7 < 36 < 10 10104/12 < 6 <9 <17 <10

16 <9 <12 <6 <6 < 42 < 14 10/18/12 < 5 <6 <12 <6 *13 <6 <9 <6 <6 < 36 < 10 11/01/12 < 7 <6 *18 <7

16 <7 <13 <7 <6 < 43 < 12 12106112 < 5 <6

13 <6

13 <6 <10 <5 <6 <34 <9 MEAN

TABLE C-VIII.2 CONCENTRATIONS OF GAMMA EMITTERS IN MILK SAMPLES COLLECTED INTHE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-18 01/05/12 <9 <9 < 23 < 12 < 20 < 11 < 16 <9 <9 < 43 < 13 02/02/12 <6 <6 < 14 <8 < 12 <7 <9 <5 <6 < 39 < 11 03/01/12 <4 <4 < 11 <5 < 10 <4 <8 <4 <4 < 24 <8 04105112 <7 <7 < 18 <9 < 16 <7 < 14 <6 <7 < 44 < 13 05/03/12 <9 <7 < 13 <5 <17 <9 < 15 <7 <8 < 52 < 12 05/17/12 <5 <5 < 13 <5 < 12 <5 <9 <4 <5 < 26 <9 05/31/12 <5 <5 < 14 <7 < 13 <5 <8 <4 <5 < 31 < 10 06/14/12 <5 <6 < 12 <6 < 12 <6 <8 <5 <5 < 33 <9 06/26/12 <6 <7 < 17 <8

15 <7 < 12 <6 <6 < 31 < 10 07/12/12 <5 <6 < 14 <7 < 12 <6 <8 <5 <6 < 38 < 12 07/26112 <6 <6 < 15 <8 < 14 <7 < 12 <5 <6 < 50 < 13 08/09/12 <4 <5 < 10 <5 < 10 <4 <8 <4 <5 < 19 <7 08/23/12 <5 <5 < 14 <7 < 12 <7 < 11 <4 <6 < 38 < 12 09106/12 <5 <5 < 12 <6 <11 <5 <9 <5 <5 < 30 < 10 09/20/12 <8 <8 < 17 <8 < 15 <8 < 14 <6 <8 < 42 < 13 10/04/12 <6 <6 < 13 <6 < 13 <6 < 11 <6 <6 < 36 < 11 10/18/12 <6 <5 < 13 <7 < 13 <6 < 10 <5 <6 < 37 < 11 11/01/12 <6 <6 < 14 <7 < 12 <5 < 10 <5 <6 < 41 < 12 12/07/12 <5 <4 < 13 <6 < 10 <5 < 10 <4 <5 < 29 <8 MEAN

TABLE C-IX.1 CONCENTRATIONS OF GAMMA EMITTERS IN VEGETATION SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA SITE COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-CONTROL 09/15112 Onions < 12 < 12 < 31 < 12 < 30 < 15 <24 < 11 < 13 < 68 <26 09/19/12 Beet greens < 14 < 12 < 38 < 17 < 31 < 12 < 19 < 11 < 13 < 94 < 25 MEAN BD-QUAD 1 09/19/12 Cauliflower < 11 < 14 < 36 < 18 < 32 < 12 < 21 < 12 < 13 < 97 < 22 09/19/12 Potatoes < 16 < 16 < 40 < 19 < 43 < 19 < 31 < 14 < 15 < 104 < 45 MEAN - - - - - - - - - -

BD-QUAD 2 09/19/12 Cabbage < 12 < 14 < 32 < 16 < 32 < 14 <24 < 11 < 13 <87

25 09/19112 Onions < 10 < 11 <26 < 12 <23 < 12 <21 < 10 < 10 < 89 < 21 C-MEAN 0O BD-QUAD 3 09/19/12 Beets < 11 < 11 < 34 < 18 < 31 < 14 < 25 < 12 < 12 < 84

22 09/19/12 Cabbage < 13 < 15 <28 < 17 < 30 < 15 < 20 < 12 < 16 < 85 < 33 MEAN BD-QUAD 4 09/19/12 Kale < 12 < 15 <32 < 12 <28 < 14 <22 < 12 < 12 < 95 <25 09/19/12 Radishes < 13 < 15 < 34 < 16 < 32 < 15 < 26 < 14 < 16 < 108 < 24 MEAN

TABLE C-X.1 QUARTERLY OSLD RESULTS FOR BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF MREM/QUARTER +/- 2 STANDARD DEVIATIONS STATION MEAN JAN - MAR APR - JUN JUL-SEP OCT-DEC CODE +/-2 S.D.

BD-02-1 19.7 2.4 21 20 BD-02-2 20.3 _ 3-5 23 20 BD-03-1 20.1 _ 3.3 21 19 BD-03-2 20.4 + 1.9 21 21 BD-04-1 18.3 + 3.1 20 18 BD-04-2 18.8 + 2.1 20 18 BD-05-1 20.0 + 1.5 21 19 BD-05-2 20.0 +/- 2.4 21 19 BD-06-1 18.7 +/- 2.4 20 19 BD-06-2 19.2 + 3.0 21 18 BD-101-3 18.8 +/- 2.6 21 19 BD-101-4 19.2 +/- 5.6 (1) 22 19 BD-102-1 19.2 +/- 3.7 21 20 BD-102-2 20.9 +/- 2.4 23 20 BD-103-1 19.0 _ 3.1 21 20 BD-103-2 19.3 +/- 1.6 20 19 BD-104-1 17.5 + 1.7 19 17 BD-104-2 18.0 + 2.7 19 19 BD-104-3 19.8 + 2.8 21 21 BD-104-4 19.4 _ 1.7 21 20 BD-105-1 18.3 +/- 4.9 21 19 BD-105-2 19.0 + 2.8 21 18 BD-105-3 20.4 + 3.0 22 21 BD-105-4 25.2 t 2.5 26 27 BD-106-1 17.1 +/- 2.0 (1) 17 BD-106-2 18.8 _ 2.3 21 19 BD-107-1 19.3 - 2.9 21 18 BD-107-2 18.8 - 5.9 22 20 BD-108-1 17.8 - 5.0 20 18 BD-108-2 19.6 +/- 2.7 21 20 BD-109-1 22.3 - 4.6 25 24 BD-109-2 22.2 _ 0.8 22 23 BD-110-1 18.9 - 1.3 19 19 BD-110-2 18.4 + 0.6 19 19 BD-110-3 19.4 + 3.8 22 20 BD-110-4 19.9 +/- 3.1 21 21 BD-111A-1 17.6 +/- 1.9 19 17 BD-111A-2 18.1 _ 2.8 16 19 BD-112-1 18.0 +/- 3.2 20 17 8D-112-2 18.1 +/- 1.6 19 18 BD-113A-1 18.8 +/- 2.2 20 19 BD-1 13A-2 17.8 +/- 4.1 21 18 BD-114-1 20.0 +/- 4.2 23 20 BD-114-2 18.7 +/- 3.1 21 19 8D-115-1 19.1 t 3.1 21 18 BD-115-2 18.9 +/- 2.1 20 18 BD-116-1 20.4 +/- 2.5 21 21 BD-116-2 19.2 t 2.2 21 19 (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-21.

TABLE C-X.1 QUARTERLY OSLD RESULTS FOR BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF MREM/QUARTER +/- 2 STANDARD DEVIATIONS STATION MEAN JAN - MAR APR - JUN JUL-SEP OCT-DEC CODE + 2 S.D.

BD-19-1 20.2 _ 4.7 20 24 19 BD-19-2 20.0 + 2.3 21 21 19 BD-20-1 19.3 _ 3.6 19 21 17 BD-20-2 20.3 + 2.9 20 22 19 BD-201-1 24.7 + 1.5 25 25 24 BD-201-2 21.0 - 2.0 20 21 20 BD-202-1 19.8 +/- 4.7 20 23 17 BD-202-2 19.5 +/- 3.5 18 22 18 BD-203-1 19.4 +/- 2.5 19 20 18 BD-203-2 18.6 +/- 3.7 17 21 17 BD-204-1 18.3 +/- 3.3 18 20 16 BD-204-2 18.0 +/- 1.4 18 19 18 BD-205-1 18.5 +/- 3.2 19 19 16 BD-205-2 18.0 +/- 3.0 17 19 17 BD-206-1 19.1 +/- 2.8 19 21 18 BD-206-2 18.2 +/- 2,7 17 20 17 BD-207-1 18.4 +/- 3.4 17 21 18 BD-207-2 17.3 +/- 1.8 18 16 18 BD-208-1 18.4 +/- 1.8 18 20 18 BD-208-2 18.7 +/- 2.0 18 19 18 BD-209-1 23.0 +/- 2.2 22 25 23 BD-209-2 24.2 +/- 1.2 24 24 23 BD-210-1 21.4 +/- 4.1 20 24 20 BD-210-2 20.1 +/- 2.0 20 22 19 BD-21 -1 19.7 +/- 2.6 19 22 19 BD-21-2 19.8 +/- 3.0 22 20 19 BD-211-1 23.7 +/- 5.0 22 27 22 BD-211-2 24.6 +/- 2.0 25 26 24 BD-212-3 18.8 +/- 2.8 19 21 17 BD-212-4 23.8 +/- 2.9 23 26 22 BD-213-3 18.5 +/- 2.7 19 20 17 BD-213-4 18.4 +/- 3.5 18 21 17 BD-214-1 19.0 +/- 3.6 18 21 (1) 18 BD-214-2 21.4 +/- 2.8 22 23 21 20 BD-215-1 18.0 +/- 2.7 19 19 18 16 BD-215-2 17.9 +/- 1.5 18 19 18 17 BD-216-1 20.8 +/- 2.7 22 22 19 20 BD-216-2 21.1 +/- 1.8 21 22 21 20 (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-22

TABLE C-X.2 MEAN QUARTERLY OSLD RESULTS FOR THE INNER RING, OUTER RING, OTHER AND CONTROL LOCATIONS FOR BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF MREM/QUARTER +/- 2 STANDARD DEVIATIONS COLLECTION SITE BOUNDARY INTERMEDIATE DISTANCE OTHER CONTROL PERIOD +/- 2 S.D.

JAN-MAR 18.9 +/- 3.5 19.7 +/- 4.6 19.9 +/- 1.9 21.5 +/- 1.4 APR-JUN 20.8 +/- 3.4 21.5 +/- 5.0 21.2 +/- 2.3 20.8 +/- 0.0 JUL-SEP 19.4 +/- 3.7 20.2 +/- 4.5 18.9 +/- 1.4 20.2 +/- 2.1 OCT-DEC 17.9 +/- 3.2 18.8 +/- 4.7 18.3 + 1.9 18.6 +/- 1.1 TABLE C-X.3 SUMMLARY OF T HE AMBIENT DOSIMETRY PROGRAM FOR BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF MREM/QUARTER +/- 2 STANDARD DEVIATIONS LOCATION SAMPLES PERIOD PERIOD PERIOD MEAN ANALYZED MINIMUM MAXIMUM +/- 2 S.D.

SITE BOUNDARY 150 14.2 26.5 19.2 +/- 4.0 INTERMEDIATE DISTANCE 127 16.0 27.4 20.0 +/- 5.1 OTHER 56 16.5 23.6 19.6 +/- 2.8 CONTROL 8 18.2 22.0 20.3 +/- 2.5 SITE BOUNDARY STATIONS - BD-101-3, BD-101-4, BD-102-1, BD-102-2, BD-103-1, BD-103-2, BD-104-1, BD-104-2, BD-104-3, BD-104-4, BD-105-1, BD-105-2, BD-105-3, BD-105-4, BD-106-1, BD-106-2, BD-107-1, BD-107-2, BD-108-1, BD-108-2, BD-109-1, BD-109-2, BD-1 10-1, BD-1 10-2, BD-1 10-3, BD-1 10-4, BD-1 11A-1, BD-1 11A-2, BD-1 12-1, BD-1 12-2, BD-1 13A-1, BD-1 13A-2, BD-1 14-1, BD-1 14-2, BD-1 15-1, BD-115-2, BD-116-1, BD-116-2 INTERMEDIATE DISTANCE STATIONS - BD-201 -1, BD-201-2, BD-202-1, BD-202-2, BD-203-1, BD-203-2, BD-204-1, BD-204-2, BD-205-1, BD-205-2, BD-206-1, BD-206-2, BD-207-1, BD-207-2, BD-208-1, BD-208-2, BD-209-1, BD-209-2, BD-210-1, BD-210-2, BD-211-1, BD-211-2, BD-212-3, BD-212-4, BD-213-3, BD-213-4, BD-214-1, BD-214-2, BD-215-1, BD-215-2, BD-216-1, BD-216-2 OTHER STATIONS - BD-02-1, BD-02-2, BD-04-1, BD-04-2, BD-05-1, BD-05-2, BD-06-1, BD-06-2, BD-19-1, BD-19-2, BD-20-1, BD-20-2, BD-21-1, BD-21-2 CONTROL STATIONS - BD-03-1, BD-03-2 C-23

FIGURE C-1 Surface Water - Gross Beta - Stations BD-10 and BD-25 (C)

Collected in the Vicinity of Braidwood Station, 2000 - 2012 BD-10 Kankaee River, Downstream 10.0 8.0 6.0 CL C.)

4,0 2.0 0.0 i 01-01-00 08-08-02 03-15-05 10-21-07 05-28-10 01-02-13 BD-25 (C) Kankakee River, Upstream 16.0 14.0 12.0 10.0 C-C.) 8.0 a.

6.0 4.0 2.0 0.0 01-01-00 08-08-02 03-15-05 10-21-07 05-28-10 01-02-13 DUE TO VENDOR CHANGE IN 2005, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JUNE 2005 C-24

FIGURE C-2 Surface Water - Gross Beta - Stations BD-38 and BD-40 Collected in the Vicinity of Braidwood Station, 2007 - 2012 BD-38 Main Drainage Ditch 14.0 12.0 10.0 CJ 8.0 0.

6.0 4.0 2.0 0.0 L 01-25-07 04-03-08 06-11-09 08-19-10 10-27-11 01-03-13 BD-40 Braidwood Station Cooling Lake 16.0 14.0 12.0 10.0

.J 8.0 0.

6.0 4.0 2.0 0.0 10-05-06 01-04-08 04-04-09 " 07-04-10 10-03-11 01-01-13 C-25

FIGURE C-3 Surface Water - Gross Beta - Stations BD-55 and BD-56 Collected in the Vicinity of Braidwood Station, 2007 - 2012 BD-55 North Pond Fatlan Site 14.0 12.0 10.0 8.0 C.)

6.0 4.0 2.0 0.0 01-2 5-07 04-03-08 06-11-09 08-19-10 10-27-11 01-03-13 BD-56 South Pond Fatlan Site 10.0 -

8.0 +

6.0

,-3 4.0 2.0

ý'; Oil" U.U -

01-25-07 04-03-08 06-11-09 08-19-10 10-27-11 01-03-13 GAPS IN DATA ARE DUE TO SAMPLING POINTS BEING FROZEN AT TIME OF COLLECTION C-26

FIGURE C-4 Surface Water - Tritium - Stations BD-10 and BD-25 (C)

Collected in the Vicinity of Braidwood Station, 2000 - 2012 BD-10 Kankakee River, Downstream 2400 2100 1800 1500 O 1200 900 600 300 0

03-25-00 10-14-02 05-04-05 11-23-07 06-13-10 01-01-13 BD-25 (C) Kankakee River, Upstream 400 300

-I 0

200 CL 100 0

03-25-00 10-14-02 05-04-05 11-23-07 06-13-10 01-01-13 DUE TO VENDOR CHANGE IN 2005, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JUNE 2005 C-27

FIGURE C-5 Surface Water - Tritium - Stations BD-38 and BD-40 Collected in the Vicinity of Braidwood Station, 2006 - 2012 BD-38 Main Drainage Ditch 2400 2100 1800

-j 1500 C-)

1200 900 600 300 0 I I I 03-09-06 07-20-07 11-29-08 04-11-10 08-22-11 01-01-13 BD-40 Braidwood Station Cooling Lake 400 300 C-U~

200 100 0 -

07-20-06 11-03-07 02-16-09 06-02-10 09-16-11 12-30-12 C-28

FIGURE C-6 Surface Water - Tritium - Stations BD-55 and BD-56 Collected in the Vicinity of Braidwood Station, 2007 - 2012 BD-55 North Pond Fatlan Site 250 200 150

.- I C.)

100 50 0-03-29-07 05-23-08 07-18-09 09-12-10 11-07-11 01-01-13 BD-56 South Pond Fatlan Site 250 200 150

-J

'3 0.,

100 50 0-03-29-07 05-23-08 07-18-09 09-12-10 11-07-11 01-01-13 C-29

FIGURE C-7 Public Water - Gross Beta - Station BD-22 Collected in the Vicinity of Braidwood Station, 2000 - 2012 BD-22 Wilmington 10.0 8.0 6.0

-J C-,

0~

4.0 2.0 0.0 i 01-29-00 08-30-02 03-31-05 10-31-07 06-01-10 12-31-12 DUE TO VENDOR CHANGE, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JUNE 2005 C-30

FIGURE C-8 Public Water - Tritium - Station BD-22 Collected in the Vicinity of Braidwood Station, 2000 - 2012 BD-22 Wilmington 7600 7200 6800 6400 6000 5600 5200 4800 4400

.J 4000 3600 3200 2800 2400 2000 1600 1200 800 400 0

01-29-00 08-30-02 03-31-05 10-31-07 06-01-10 12-31-12 DUE TO VENDOR CHANGE, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JUNE 2005 C-3I

FIGURE C-9 Ground/Well Water - Tritium - Stations BD-13 and BD-34 Collected in the Vicinity of Braidwood Station, 2000 - 2012 BD-13 Braidwood City Hall Well 500 400 300

_.1 C.)

200 100 0 4-01-07-00 08-13-02 03-19-05 10-24-07 05-30-10 01-03-13 BD-34 Gibson Well 700 600 500

,J 400

a. 300 200

ýý<ýx F'VAX 100 0 i 01-07-00 08-13-02 03-19-05 10-24-07 05-30-10 01-03-13 DUE TO VENDOR CHANGE IN 2005, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JULY.

C-32

FIGURE C-10 Ground/Well Water - Tritium - Stations BD-35 and BD-36 Collected in the Vicinity of Braidwood Station, 2000 - 2012 BD-35 Joly Well 500 400 300 C-200 100

%"' 1--<wk-ýý 0 i 01-07-00 08-13-02 03-19-05 10-24-07 05-30-10 01-03-13 BD-36 Hutton Well 1200 1000 800

,-J 600 0,.

400 200 0 I 01-07-00 08-13-02 03-19-05 10-24-07 05-30-10 01-03-13 DUE TO VENDOR CHANGE IN 2005,< VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JULY.

C-33

FIGURE C-11 Ground/Well Water - Tritium - Station BD-37 Collected in the Vicinity of Braidwood Station, 2000 - 2012 BD-37 Nurczyk Well 600 +

500 400

.,J UJ 300 KkPAIk/

200 100 I

U 11-01-07-00 08-13-02 03-19-05 10-24-07 05-30-10 01-03-13 DUE TO VENDOR CHANGE IN 2005, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JULY.

C-34

FIGURE C-12 Ground/Well Water - Tritium - Station BD-50 and BD-51 Collected in the Vicinity of Braidwood Station, 2007 - 2012 BD-50 Skole Well 1000 900 800 700 600 C.) 500 a.

400 300 200 100 0

01-01-07 03-14-08 05-26-09 08-07-10 10-19-11 12-30-12 BD-51 Fatlan Well 600 500 400 CL 300 200 100 U"I 01-03-07 03-16-08 05-28-09 08-09-10 10-21-11 01-01-13 NEW STATIONS BD-50 AND BD-51 ADDED IN 2007 STATION BD-50 WAS INITIALLY DISCONTINUED ON 10/18/07 AND RESUMED ON 04/08/10 C-35

FIGURE C-13 Ground/Well Water - Tritium - StationS BD-53 and BD-54 Collected in the Vicinity of Braidwood Station, 2007 - 2012 BD-53 Phelps Well 600 +

500 +

400 +

-J C,

a. 300 +

200 100 0 4-01-03-07 11-03-07 09-02-08 07-03-09 05-03-10 03-03-11 01-01-12 BD-54 Cash Well 600 500 +

400 +

a,. 300 +

200 100 0 4-01-03-07 03-16-08 05-28-09 08-09-10 10-21-11 01-01-13 BD-53 was removed from the program during the 3rd quarter of 2011 C-36

FIGURE C-14 Air Particulate - Gross Beta- Stations BD-03 (C) and BD-06 Collected in the Vicinity of Braidwood Station, 2000 - 2012 BD-03 (C) County Line Road 80.0 60.0 0

0. 40.0 LLI CD 20.0 0.0 i 01-07-00 08-13-02 03-19-05 10-24-07 05-30-10 01-03-13 BD-06 Godley 60.0 50.0 C*

E 40.0 a.

30.0 C?

LU 20.0 0

10.0 0.0 I 01-07-00 08-13-02 03-19-05 10-24-07 05-30-10 01-03-13 C-37

FIGURE C-15 Air Particulate - Gross Beta- Stations BD-19 and BD-20 Collected in the Vicinity of Braidwood Station, 2000 - 2012 BD-19 Nearsite, NW 60.0 50.0 40.0 E

CL 30.0 o 20.0 10.0 0.0 I I I I I 01-07-00 08-13-02 03-19-05 10-24-07 05-30-10 01-03-13 BD-20 Nearsite, N 70.0 60.0 50.0 E

0 40.0 9 30.0 IL 0

20.0 10.0 0.0 01-07-00 08-13-02 03-19-05 10-24-07 05-30-10 01-03-13 C-38

FIGURE C-16 Air Particulate - Gross Beta- Station BD-21 Collected in the Vicinity of Braidwood Station, 2000 - 2012 BD-21 Nearsite, NE 70.0 60.0 50.0 E

640.0

' 30.0

,Lu 0

20.0 10.0 0.0 4-01-07-00 08-13-02 03-19-05 10-24-07 05-30-10 01-03-13 C-39

FIGURE C-17 Air Particulate - Gross Beta- Stations BD-02 and BD-04 Collected in the Vicinity of Braidwood Station, 2005 - 2012 BD-02 Nearsite, NW 60.0 50.0 40.0 E

0. 30.0 O 20.0 10.0 0.0 -

07-07-05 01-05-07 07-05-08 01-03-10 07-04-11 01-01-13 BD-04 Nearsite, N 60.0 50.0 V) 40.0 0.

E 30.0 0U 0 20.0 10.0 0.0 I 07-07-05 01-05-07 07-05-08 01-03-10 07-04-11 01-01-13 C-40

FIGURE C-18 Air Particulate - Gross Beta- Station BD-05 Collected in the Vicinity of Braidwood Station, 2005 - 2012 BD-05 Nearsite, NE 60.0 50.0

' 40.0 E

5 C. 30.0 0

20.0 10.0 0.0 I 07-07-05 01-05-07 07-05-08 01-03-10 07-04-11 01-01-13 C-41

Intentionally left blank APPENDIX D INTER-LABORATORY COMPARISON PROGRAM

Intentionally left blank TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2012 (PAGE 1 OF 3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix Nuclide Units Value (a) Value (b) TBEIAnalytics Evaluation (d)

March 2012 E10066 Milk Sr-89 pCi/L 101 94.8 1.07 Sr-90 pCi/L 11.7 13.5 0.87 E10067 Milk 1-131 pCi/L 87.5 92.5 0.95 Ce-141 pCi/L 247 260 0.95 Cr-51 pCi/L 435 436 1.00 Cs-134 pCi/L 133 149 0.89 Cs-137 pCi/L 156 159 0.98 Co-58 pCi/L 127 132 0.96 Mn-54 pCi/L 190 195 0.97 Fe-59 pCi/L 179 168 1.07 Zn-65 pCi/L 327 333 0.98 Co-60 pCi/L 274 279 0.98 E10069 AP Ce-141 pCi 167 164 1.02 Cr-51 pCi 310 276 1.12 Cs-1 34 pCi 107 94.5 1.13 Cs-137 pCi 109 101 1.08 Co-58 pCi 87.6 83.5 1.05 Mn-54 pCi 133 123 1.08 Fe-59 pCi 113 106 1.07 Zn-65 pCi 226 210 1.08 Co-60 pCi 185 176 1.05 E10068 Charcoal 1-131 pCi 92.8 94.2 0.99 E10070 Water Fe-55 pCi/L 1800 1570 1.15 A June 2012 E10198 Milk Sr-89 pCi/L 86.1 99.8 0.86 A Sr-90 pCi/L 9.2 12.7 0.72 W E10199 Milk 1-131 pCi/L 88.9 99.7 0.89 A Ce-141 pCi/L 72.8 82.2 0.89 A Cr-51 pCi/L 394 402 0.98 A Cs-1 34 pCi/L 159 174 0.91 A Cs-1 37 pCi/L 206 212 0.97 A Co-58 pCi/L 89.5 92.3 0.97 A Mn-54 pCi/L 129 132 0.98 A Fe-59 pCi/L 129 128 1.01 A Zn-65 pCi/L 193 199 0.97 A Co-60 pCi/L 342 355 0.96 A E10201 AP Ce-141 pCi 73.2 75.1 0.97 A Cr-51 pCi 367 366 1.00 A Cs-134 pCi 165 159 1.04 A Cs-137 pCi 205 193 1.06 A Co-58 pCi 84.7 84.2 1.01 A Mn-54 pCi 118 121 0.98 A Fe-59 pCi 125 117 1.07 A Zn-65 pCi 181 182 0.99 A Co-60 pCi 338 324 1.04 A E10200 Charcoal 1-131 pCi 101 96.6 1.05 A D-1

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2012 (PAGE 2 OF 3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix Nuclide Units Value (a) Value (b) TBE/Analytics Evaluation (d)

June 2012 E10202 Water Fe-55 pCi/L 1890 1580 1.20 A September2012 E10296 Milk Sr-89 pCi/L 106 99.6 1.06 Sr-90 pCi/L 13.6 16.0 0.85 E10297 Milk 1-131 pCi/L 89.8 99.6 0.90 Ce-141 pCi/L 160 164 0.98 Cr-51 pCi/L 230 248 0.93 Cs-134 pCi/L 101 108 0.94 Cs-1 37 pCi/L 174 174 1.00 Co-58 pCi/L 97.2 100 0.97 Mn-54 pCiIL 188 196 0.96 Fe-59 pCi/L 159 152 1.05 Zn-65 pCi/L 195 192 1.02 Co-60 pCi/L 155 152 1.02 E10299 AP Ce-141 pCi 145 135 1.07 Cr-51 pCi 219 205 1.07 Cs-134 pCi 94.1 89.4 1.05 Cs-137 pCi 140 144 0.97 Co-58 pCi 88.3 83.0 1.06 Mn-54 pCi 173 162 1.07 Fe-59 pCi 136 125 1.09 Zn-65 pCi 165 159 1.04 Co-60 pCi 133 125 1.06 E10298 Charcoal 1-131 pCi 95.5 97.2 0.98 E10300 Water Fe-55 pCi/L 1630 1900 0.86 A December 2012 E10334 Milk Sr-89 pCi/L 101 96.6 1.05 Sr-90 pCi/L 11.3 13.8 0.82 E10335 Milk 1-131 pCi/L 93.1 90.0 1.03 Ce-141 pCi/L 52.5 51.0 1.03 Cr-51 pCi/L 373 348 1.07 Cs- 134 pCi/L 157 165 0.95 Cs-137 pCi/L 113 117 0.97 Co-58 pCi/L 94.1 98.5 0.96 Mn-54 pCi/L 116 116 1.00 Fe-59 pCi/L 124 116 1.07 Zn-65 pCi/L 190 186 1.02 Co-60 pCi/L 172 170 1.01 E10337A AP Ce-141 pCi 51.8 49.6 1.04 Cr-51 pCi 372 338 1.10 Cs-1 34 pCi 165 161 1.02 Cs-137 pCi 113 114 0.99 Co-58 pCi 96.5 95.8 1.01 Mn-54 pCi 118 112 1.05 Fe-59 pCi 105 112 0.94 Zn-65 pCi 166 181 0.92 Co-60 pCi 179 165 1.08 D-2

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2012 (PAGE 3 OF 3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix Nuclide Units Value (a) Value (b) TBE/Analytics Evaluation (d)

December 2012 E10336 Charcoal 1-131 pCi 73.1 72.7 1.01 A El10333 Water Fe-55 pCi/L 1550 1750 0.89 A (a) Teledyne Brown Engineeringreported result.

(b) The Analytics known value is equal to 100% of the parameterpresent in the standardas determinedby gravimetric and/or volumetric measurements made during standardpreparation.

(c) Ratio of Teledyne Brown Engineering to Analytics results.

(d) Analytics evaluation based on TBE internal QC limits: A = Acceptable. Reported result falls within ratio limits of 0. 80-1.20.

W-Acceptable with warning. Reported result falls within 0.70-0.80 or 1.20-1.30. N = Not Acceptable. Reported result falls outside the ratio limits of < 0. 70 and > 1.30.

D-3

TABLE D-2 ERA ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2012 (PAGE I OF 1)

Identification Reported Known Acceptance Month/Year Number Media Nuclide Units Value (a) Value (b) Limits Evaluation (c)

May 2012 RAD-89 Water Sr-89 pCi/L 63.4 58.5 46.9 - 66.3 A Sr-90 pCi/L 33.5 37.4 27.4 -43.1 A Ba-1 33 pCi/L 89.2 82.3 69.1 -90.5 A Cs-1 34 pCi/L 66.5 74.2 60.6-81.6 A Cs-137 pCi/L 152 155 140-172 A Co-60 pCi/L 73.3 72.9 65.6 - 82.6 A Zn-65 pCi/L 109 105 94.5- 125 A Gr-A pCi/L 82.4 62.9 33.0 - 78.0 N (1)

Gr-B pCi/L 43.6 44.2 29.6 -51.5 A 1-131 pCi/L 25.9 27.1 22.5 -31.9 A H-3 pCi/L 15433 15800 13800 - 17400 A MRAD-16 Filter Gr-A pCi/filter 39.5 77.8 26.1 - 121 A November, 2012 RAD-91 Water Sr-89 pCi/L 46.5 39.1 29.7-46.1 N (2)

Sr-90 pCi/L 16.6 20.1 14.4-23.8 A Ba-133 pCi/L 85.2 84.8 71.3 -93.3 A Cs-1 34 pCi/L 76.9 76.6 62.6 - 84.3 A Cs-137 pCi/L 177 183 165-203 A Co-60 pCi/L 77.4 78.3 70.5-88.5 A Zn-65 pCi/L 209 204 184 - 240 A Gr-A pCi/L 50.6 58.6 30.6 - 72.9 A Gr-B pCi/L 59.3 39.2 26.0 -46.7 N (2) 1-131 pCi/L 22.9 24.8 20.6 - 29.4 A H-3 pCi/L 5020 4890 4190-5380 A MRAD-17 Filter Gr-A pCi/filter 59.6 87.5 29.3 - 136 A (1) Detector G I is slightly biased high for Th-230 based measurements used only for ERA Gross Alpha samples. NCR 12-05 (2) The Sr-89 found to known ratio was 1. 19, which TBE considers acceptable. It appears the aliquot was entered incorrectly for the Gross Beta NCR 12-13 (a) Teledyne Brown Engineeringreported result.

(b) The ERA known value is equal to 100% of the parameterpresent in the standardas determinedby gravimetric and/or volumetric measurements made during standardpreparation.

(c) ERA evaluation: A=acceptable. Reported result falls within the Warning Limits. NA=not acceptable. Reported result falls outside of the Control Limits. CE=check for Error. Reported result falls within the Control Limits and outside of the Warning Limit.

D-4

TABLE D-3 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)

TELEDYNE BROWN ENGINEERING, 2012 (PAGE 1 OF 2)

Identification Reported Known Acceptance Month/Year Number Media Nuclide Units Value (a) Value (b) Range Evaluation (c)

March 2012 12-MaW26 Water Cs-134 Bq/L -0.0045 (1) A Cs-137 Bq/L 37.5 39.9 27.9 - 51.9 A Co-57 Bq/L 30.8 32.9 23.0 - 42.8 A Co-60 Bq/L 22.4 23.72 16.60 - 30.84 A H-3 Bq/L 456 437 306 - 568 A Mn-54 Bq/L 31.0 31.8 22.3 -41.3 A K-40 BqeL 144 142 99 - 185 A Sr-90 Bq/L -0.0084 (1) A Zn-65 Bq/L -0.369 (1) A 12-GrW26 Water Gr-A Bq/L 2.06 2.14 0.64 - 3.64 A Gr-B Bq/L 7.48 6.36 3.18-9.54 A 12-MaS26 Soil Cs-134 Bq/kg 831 828 580 - 1076 A Cs-137 Bq/kg 0.145 (1) A Co-57 Bq/kg 1270 1179 825 - 1533 A Co-60 Bq/kg 7.61 1.56 (2) N (3)

Mn-54 Bq/kg 634 558 391 - 725 A K-40 Bq/kg 1690 1491 1044-1938 A Sr-90 Bq/kg 328 392 274 - 540 A Zn-65 Bq/kg 753 642 449 - 835 A 12-RdF26 AP Cs-134 Bq/sample 2.31 2.38 1.67-3.09 A Cs-137 Bq/sample 2.15 1.79 1.25-2.33 W Co-57 Bq/sample -0.0701 (1) A Co-60 'Bq/sample 2.62 2.182 1.527 - 2.837 W Mn-54 Bq/sample 4.13 3.24 2.27 -4.21 W Sr-90 Bq/sample 0.0185 (1) A Zn-65 Bq/sample 4.19 2.99 2.09 - 3.89 N (3) 12-GrF26 AP Gr-A Bq/sample 0.365 1.2 0.4-2.0 A Gr-B Bq/sample 2.31 2.4 1.2-3.6 A 12-RdV26 Vegetation Cs-134 Bq/sample 8.72 8.43 5.90- 10.96 A Cs-137 Bq/sample 0.0424 (1) A Co-57 Bq/sample 15.5 12.0 8.4- 15.6 W Co-60 Bq/sample 6.80 6.05 4.24 - 7.87 A Mn-54 Bq/sample 0.0057 (1) A Sr-90 Bq/sample 2.24 2.11 1.48-2.74 A Zn-65 Bq/sample 10.5 8.90 6.23-11.57 A September 2012 12-MaW27 Water Cs- 134 Bq/L 21.4 23.2 16.2-30.2 A Cs-137 Bq/L 17.0 16.7 11.7-21.7 A Co-57 Bq/L 28.7 29.3 20.5 - 38.1 A Co-60 Bq/L 0.179 (1) A H-3 Bq/L 387 334 234 - 434 A Mn-54 Bq/L 18.1 17.8 12.5 - 23.1 A K-40 Bq/L 139 134 94 - 174 A Sr-90 Bq/L 19.6 12.2 8.5 - 15.9 N (4)

Zn-65 Bq/L 27.2 25.9 18.1 -33.7 A 12-GrW27 Water Gr-A Bq/L 0.966 1.79 0.54 - 3.04 A Gr-B Bq/L 10.0 9.1 4.6 - 13.7 A D-5

TABLE D-3 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)

TELEDYNE BROWN ENGINEERING, 2012 (PAGE 2 OF 2)

Identification Reported Known Acceptance Month/Year Number Media Nuclide Units Value (a) Value (b) Range Evaluation (c)

September 2012 12-MaS27 Soil Cs-134 Bq/kg 880 939 657- 1221 A Cs-137 Bq/kg 1220 1150 805 - 1495 A Co-57 Bq/kg 1330 1316 921 -1711 A Co-60 Bq/kg 552 531 372-690 A Mn-54 Bq/kg 1000 920 644- 1196 A K-40 Bq/kg 674 632 442 - 822 A Sr-90 Bq/kg 528 508 356 - 660 A Zn-65 Bq/kg 665 606 424 - 788 A 12-RdF27 AP Cs-134 Bq/sample 2.760 2.74 1.92- 3.56 A Cs-137 Bq/sample 0.0415 (1) A Co-57 Bq/sample 2.00 191.00 1.34-2.48 A Co-60 Bq/sample 1.78 1.728 1.210 - 2.246 A Mn-54 Bq/sample 2.40 2.36 1.65-3.07 A Sr-90 Bq/sample 0.931 1.03 0.72- 1.34 A Zn-65 Bq/sample -0.688 (1) A 12-GrF27 AP Gr-A Bq/sample 0.434 0.97 0.29 - 1.65 A Gr-B Bq/sample 1.927 1.92 0.96 - 2.88 A 12-RdV27 Vegetation Cs-134 Bq/sample 6.28 6.51 4.56 -8.46 A Cs-1 37 Bq/sample 4.62 4.38 3.07 - 5.69 A Co-57 Bq/sample 6.51 5.66 3.96 - 7.36 A Co-60 Bq/sample 5.32 5.12 3.58 - 6.66 A Mn-54 Bq/sample 3.59 3.27 2.29 -4.25 A Sr-90 Bq/sample 0.0012 (1) A Zn-65 Bq/sample -0.046 (1) A (1) False positive test.

(2) Sensitivity evaluation (3) No cause was found for the failed high soil Co-60 sensitivitytest or the high Zn-65 in AP, which TBE considers an anomaly. NCR 12-08 (4) Sr-90 in water high due to incorrect aliquot entered in LIMS. 12-11 (a) Teledyne Brown Engineering reportedresult.

(b) The MAPEP known value is equal to 100% of the parameterpresent in the standardas determined by gravimetricand/or volumetric measurementsmade during standardpreparation.

(c) DOE/MAPEPevaluation: A=acceptable, W=acceptablewith warning, N=not acceptable.

D-6

TABLE D-4 ERA STATISTICAL

SUMMARY

PROFICIENCY TESTING PROGRAM' ENVIRONMENTAL, INC., 2012 (Page 1 of 1)

Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Result b Result c Limits Acceptance ERW-1783 04/09/12 Sr-89 62.2 +/- 6.0 58.5 46.9 - 66.3 Pass ERW-1783 04/09/12 Sr-90 33.7 +/- 2.1 37.4 27.4 - 43.1 Pass ERW-1786 04/09/12 Ba-1 33 75.7 +/- 4.1 82.3 69.1 -90.5 Pass ERW-1786 04/09/12 Co-60 71.9 +/-4.0 72.9 65.6 - 82.6 Pass ERW-1 786 04/09/12 Cs-134 70.0 +/- 4.3 74.2 60.6 - 81.6 Pass ERW-1786 04/09/12 Cs-1 37 151.5 +/- 6.1 155.0 140.0 - 172.0 Pass ERW-1 786 04/09/12 Zn-65 108.3 +/- 89.0 105.0 94.5 - 125.0 Pass ERW-1789 04/09/12 Gr. Alpha 55.0 +/- 2.4 62.9 33.0 - 78.0 Pass d Fail ERW-1789 04/09/12 Gr. Beta 76.2 +/- 1.8 44.2 29.6 - 51.5 ERW-1 798 04/09/12 H-3 16023 +/- 355 15800 13800 -17400 Pass ERW-6283 10/05/12 Sr-89 41.5 +/- 4.1 39.1 29.7 -46.1 Pass ERW-6283 10/05/12 Sr-90 19.7 +/- 1.6 20.1 14.4 -23.8 Pass ERW-6286 10/05/12 Ba-1 33 82.7 +/- 4.4 84.8 71.3 - 93.3 Pass ERW-6286 10/05/12 Co-60 77.2 +/- 3.7 78.3 70.5 - 88.5 Pass ERW-6286 10/05/12 Cs-134 74.4 +/- 1.5 76.6 62.6 - 84.3 Pass ERW-6286 10/05/12 Cs-137 183.0 +/-6.2 183.0 165.0 - 203.0 Pass ERW-6286 10/05/12 Zn-65 211.0 +/- 9.9 204.0 184.0 - 240.0 Pass ERW-6288 10/05/12 Gr. Alpha 47.0 +/- 2.3 58.6 30.6 -72.9 Pass ERW-6288 10/05/12 Gr. Beta 33.4 +/- 1.2 39.2 26.0 -46.7 Pass ERW-6290 10/05/12 1-131 23.3 +/- 1.0 24.8 20.6 -29.4 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing in drinking water conducted by Environmental Resources Associates (ERA).

b Unless otherwise indicated, the laboratory result is given as the mean +/- standard deviation for three determinations.

Results are presented as the known values, expected laboratory precision (1 sigma, 1 determination) and control limits as provided by ERA.

d Result of reanalysis: 38.3 +/- 1.3 pCi/L. Sample dilution problem suspected. A new dilution was prepared.

D-7

TABLE D-5 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)

ENVIRONMENTAL, INC., 2012 (Page I of 2)

Concentration a Known Control Lab Code " Date Analysis Laboratory result Activity Limits c Acceptance STSO-1766 02/01/12 Co-57 1352.10 +/- 4.00 1179.00 825.00 -1533.00 Pass STSO-1 766 02/01/12 Co-60 1.70 +/- 0.70 1.56 1.00 -2.00 Pass STSO-1 766 02/01/12 Cs-134 842.20 +/- 4.30 828.00 580.00 - 1076.00 Pass STSO-1 766 02/01/12 Cs-137 0.40 +/- 0.90 0.00 0.00 -1.00 Pass STSO-1 766 02/01/12 K-40 1729.60 +/- 22.20 1491.00 1044.00 - 1938.00 Pass STSO-1 766 02/01/12 Mn-54 647.60 +/- 4.20 558.00 391.00 -725.00 Pass STSO-1 766 02/01/12 Sr-90 383.20 +/- 15.30 392.00 274.00 -510.00 Pass STSO-1 766 02/01/12 Zn-65 766.70 +/- 6.70 642.00 449.00 - 835.00 Pass STAP-1 772 02/01/12 Co-57 0.010 +/- 0.01 0.00 0.000 -1.00 Pass STAP-1 772 02/01/12 Co-60 2.40 +/- 0.08 2.18 1.53 -2.84 Pass STAP-1772 02/01/12 Cs- 134 2.33 +/- 0.13 2.38 1.67 -3.09 Pass STAP-1 772 02/01/12 Cs-137 2.07 +/- 0.10 1.79 1.25 -2.33 Pass STAP-1772 02/01/12 Mn-54 3.77 +/- 0.14 3.24 2.27-4.21 Pass STAP-1772 02/01/12 Sr-90 -0.010 +/- 0.060 0.000 -0.10-0.13 Pass STAP-1772 02/01/12 Zn-65 3.67 +/- 0.20 2.99 2.09 -3.89 Pass STAP-1773 02/01/12 Gr. Alpha 0.51 +/- 0.05 1.20 0.40-2.00 Pass STAP-1773 02/01/12 Gr. Beta 2.75 +/- 0.10 2.40 1.20 -3.60 Pass STVE-1 776 02/01/12 Co-57 14.57 +/- 0.28 12.00 8.40-15.60 Pass STVE-1 776 02/01/12 Co-60 6.45 +/- 0.23 6.05 4.24 -7.87 Pass STVE-1 776 02/01/12 Cs-1 34 8.39 +/- 0.29 8.43 5.90 -10.96 Pass STVE-1 776 02/01/12 Cs-137 0.01 +/- 0.09 0.00 0.00 -0.10 Pass STVE-1 776 02/01/12 Mn-54 0.03 +/- 0.08 0.00 0.00-0.10 Pass STVE-1 776 02/01/12 Zn-65 10.31 +/- 0.67 8.90 6.23-11.57 Pass STW-1 960 02/01/12 Gr. Alpha 1.68 +/- 0.09 2.14 0.64 -3.64 Pass STW-1 960 02/01/12 Gr. Beta 6.33 +/- 0.10 6.36 3.18-9.54 Pass STW-1964 02/01/12 Co-57 33.30 +/- 0.40 32.90 23.00 - 42.80 Pass STW-1 964 02/01/12 Co-60 23.20 +/- 0.40 23.72 16.60 -30.84 Pass STW-1964 02/01/12 Cs-1 34 0.30 +/- 3.00 0.00 0.00-1.00 Pass STW-1964 02/01/12 Cs-1 37 40.10 +/- 0.60 39.90 27.90 - 51.90 Pass STW-1964 02/01/12 H-3 460.00 +/- 12.10 437.00 306.00 - 568.00 Pass STW-1964 02/01/12 K-40 153.00 +/- 4.20 142.00 99.00 - 185.00 Pass STW-1 964 02/01/12 Mn-54 32.70 +/- 0.60 31.80 22.30 -41.30 Pass STW-1 964 02/01/12 Sr-90 0.10 +/- 0.20 0.00 0.00-1.00 Pass STW-1 964 02/01/12 Zn-65 0.01 +/- 0.20 0.00 0.00 -1.00 Pass D-8

TABLE D-5 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)

ENVIRONMENTAL, INC., 2012 (Page 2 of 2) a Concentration Known Control Lab Code D Date Analysis Laboratory result Activity Limits c Acceptance STSO-5392 08/01/12 Sr-90 483.52 +/- 16.47 508.00 356.00 - 660.00 Pass STSO-5394 08/01/12 Co-57 1528.00 +/- 4.10 1316.00 921.00 - 1711.00 Pass STSO-5394 08/01/12 Co-60 592.00 +/- 3.20 531.00 372.00 - 690.00 Pass STSO-5394 08/01/12 Cs-134 933.60 +/- 5.82 939.00 657.00 - 1221.00 Pass STSO-5394 08/01/12 Cs-137 1319.80 +/- 5.50 1150.00 805.00 - 1495.00 Pass STSO-5394 08/01/12 K-40 737.30 +/- 17.70 632.00 442.00 - 822.00 Pass STSO-5394 08/01/12 Mn-54 1083.20 +/- 5.20 920.00 644.00 - 1196.00 Pass STSO-5394 08/01/12 Zn-65 696.10 +/- 7.00 606.00 424.00 - 788.00 Pass STVE-5395 08/01/12 Co-57 7.44 +/- 0.17 5.66 3.96 - 7.36 Fail STVE-5395 08/01/12 Co-60 5.90 +/- 0.15 5.12 3.58 - 6.66 Pass STVE-5395 08/01/12 Cs-1 34 7.40 +/- 0.31 6.51 4.56 - 8.46 Pass STVE-5395 08/01/12 Cs-1 37 5.45 +/- 0.18 4.38 3.07 - 5.69 Pass STVE-5395 08/01/12 Mn-54 4.06 +/- 0.21 3.27 2.29 - 4.25 Pass STAP-5398 08/01/12 Gr. Alpha 0.41 +/- 0.05 0.97 0.29 - 1.65 Pass STAP-5398 08/01/12 Gr. Beta 2.11 +/- 0.09 1.92 0.96 - 2.88 Pass STAP-5403 08/01/12 Co-57 1.96 +/- 0.05 1.91 1.34 -2.48 Pass STAP-5403 08/01/12 Co-60 1.76 +/- 0.07 1.73 1.21 -2.25 Pass STAP-5403 08/01/12 Cs-134 2.74 +/- 0.18 2.74 1.92 -3.56 Pass STAP-5403 08/01/12 Cs-1 37 0.00 +/- 0.03 0.00 -0.01 - 0.01 Pass STAP-5403 08/01/12 Mn-54 2.52 +/- 0.10 2.36 1.65 -3.07 Pass STAP-5403 08/01/12 Zn-65 0.01 +/- 0.06 0.00 -0.010 - 0.010 Pass a Results are reported in units of Bq/kg (soil), Bq/L (water) or Bq/total sample (filters, vegetation).

b Laboratory codes as follows: STW (water), STAP (air filter), STSO (soil), STVE (vegetation).

c MAPEP results are presented as the known values and expected laboratory precision (1 sigma, 1 determination) and control limits as defined by the MAPEP. A known value of "zero" indicates an analysis was included in the testing series as a "false positive". MAPEP does not provide control limits.

d Result of reanalysis; 6.74 +/- 0.15 Bq/sample. Gamma emitters for the vegetation matrix exhibited a high bias, only Co-57 exceeded acceptance limits. Recounted using a geometry more closely matched to the MAPEP sample size.

D-9

Intentionally left blank APPENDIX E EFFLUENT DATA

Intentionally left blank TABLE OF CONTENTS INT R O D UC T IO N ................................................................................................................. 1 S UMMA RY ........................................................................................................................... 2 1.0. EFFLUENTS ................................................................................................. 3 1.1. Gaseous Effluents to the Atmosphere .............................................. 3 1.2. Liquids Released to Kankakee River .............................................. 3 2.0. SOLID RADIOACTIVE W ASTE ................................................................. 3 3.0. DOSE TO MAN ............................................................................................ 4 3.1. Gaseous Effluent Pathways ............................................................. 4 3.1.1. NobleGases ....................................................................... 4 3.1.1.1. Gamma Dose Rates ............................................. 4 3.1.1.2. Beta Air and Skin Dose Rate ............................... 4 3.1.2. Radioactive Iodine & Particulate ......................................... 5 3.2. Liquid Effluent Pathways ................................................................. 5 3.3. Assessment of Dose to Member of Public ........................................ 6 4.0. SITE METEOROLOGY ................................................................................ 6 i

Table of Contents (cont.)

APPENDIX E-1 DATA TABLES AND FIGURES ............................................................. E-1 .1 Station Releases Table 1.1-1 Gaseous Effluents Summation of all Releases ........................ E-1.2 Table 1.2-1 Liquid Effluents Summation of all Releases ............................. E-1.4 Table 3.1-1 Maximum Doses Resulting from Airborne Releases ................ E-1.6 Table 3.2-1 Maximum Doses Resulting from Liquid Effluents ..................... E-1.16 Table 3.3-1 10CFR20 Compliance Assessment .......................................... E-1.26 Table 3.4-1 Maximum Doses Resulting from Airborne Releases Based On Concurrent Meteorological Data ......................................... E-1.28 ii

INTRODUCTION Braidwood Station, a two-unit PWR station, is located in Will County, Illinois, fifteen (15) miles south-southwest of Joliet, Illinois. Each reactor is designed to have a capacity of 3587 thermal megawatts. Unit No. 1 went critical on May 29, 1987, and Unit No. 2 went critical on March 8, 1988. The station has been designed to keep releases to the environment at levels below those specified in the regulations.

Liquid effluents from Braidwood Station are released to the Kankakee River in controlled batches after radioassay of each batch. Gaseous effluents are released to the atmosphere and are calculated on the basis of analyses of grab samples of noble gases and tritium, as well as continuously collected composite samples of iodine and particulate activity sampled during the course of the year. The results of effluent analyses are summarized on a monthly basis. Airborne concentrations of noble gases, 1-131, and particulate radioactivity in offsite areas are calculated using effluent and meteorological data. Carbon-14 concentration in offsite areas is calculated based on industry-approved methodology for estimation of the amount released and meteorological data.

Environmental monitoring is conducted by sampling at indicator and control (background) locations in the vicinity of Braidwood Station to measure changes in radiation or radioactivity levels that may be attributable to station operations. If significant changes attributable to Braidwood Station are measured, these changes are correlated with effluent releases. An environmental monitoring program is conducted which also includes all potential pathways at the site. Gaseous pathways include ground plane (direct), inhalation, vegetation, meat, and milk.

Liquid pathways include potable water and freshwater fish. The critical pathway for 2012 gaseous dose was vegetation. The critical pathway for 2012 liquid dose was potable water.

1

SUMMARY

Calculations based on gaseous and liquid effluents, Kankakee River Flow and meteorological data indicate that public dose due to radioactive material attributable to Braidwood Station during the period does not exceed regulatory or Offsite Dose Calculation Manual (ODCM) limits.

The maximally exposed individual's total body dose due to gaseous and liquid emissions from licensed activities at Braidwood Station is 6.22E-01 mrem. The annual limit on TEDE is 100 mrem.

The assessment of radiation doses to the public is performed in accordance with the ODCM. The results of these analyses confirm that the station is operating in compliance with IOCFR50 Appendix I, 10CFR20 and 40CFR1 90.

2

1.0 EFFLUENTS 1.1 Gaseous Effluents to the Atmosphere Measured concentrations of noble gases, radioiodine, and particulate radioactivity released to the atmosphere during the year, are listed in Table 1.1-1.

A total of 8.16E-01 curies of fission and activation gases were released with a maximum quarterly average release rate of 1.80E-02 pCi/sec for Unit 1 and 1.79E-02 pCi/sec for Unit 2.

A total of 1.48E-03 curies of radioiodine were released during the year with a maximum average quarterly release rate of 5.62E-05 pCi/sec for Unit 1 and 8.52E-05 pCi/sec for Unit 2.

A total of 1.OOE-04 curies of beta-gamma emitters were released as airborne particulate matter with a maximum average release rate of 1.47E-06 pCi/sec for Unit 1 and 1.11 E-05 pCi/sec for Unit 2.

Alpha-emitting radionuclides were below the lower limit of detection (LLD) for the year.

A total of 5.71 E+02 curies of tritium were released with a maximum average quarterly release rate of 7.75E+00 pCi/sec for Unit 1 and 1.99E+01 pCi/sec for Unit 2.

A total of 8.31 E+00 curies of C-14 was released with a maximum average quarterly release rate of 1.43E-01 uCi/sec from Unit 1 and 1.42E-01 uCi/sec from Unit 2.

1.2 Liquids Released to Kankakee River A total of 3.89E+06 liters of radioactive liquid wastes (prior to dilution) containing 1.08E+00 curies (excluding tritium, noble gases and alpha) were discharged from the station. These wastes were released at a maximum quarterly diluted average concentration of 1.71 E-07 pCi/ml.

Alpha-emitting radionuclides were less than the LLD for the year. A total of 2.58E+03 curies of tritium were released from the station.

Quarterly release activities are given in Table 1.2-1.

2.0 SOLID RADIOACTIVE WASTE Solid radioactive wastes were shipped by truck to the Envirocare of Utah disposal facility and various waste processors. For details, refer to the Braidwood Station 2012 Radioactive Effluent Release Report.

3

3.0 DOSE TO MAN 3.1 Gaseous Effluent Pathways Table 3.1-1 summarizes the doses resulting from releases of airborne radioactivity via the different exposure pathways.

3.1.1 Noble Gases 3.1.1.1 Gamma Dose Rates Offsite Gamma air and total body dose rates are shown in Table 3.1-1 and were calculated based on measured effluents and average meteorological data. Based on measured effluents and average meteorological data, the maximum total body dose to an individual would be 5.73E-01 mrem for the year (Table 3.1-1) with an occupancy or shielding factor of 0.7 used. The maximum total body dose based on measured effluents and concurrent meteorological data would be 6.75E-01 mrem (Table 3.4-1). The maximum gamma air dose was 8.82E-06 mrad (Table 3.1-1) based on measured effluents and average meteorological data and 1.70E-05 mrad based on concurrent meteorological date (Table 3.4-1).

3.1.1.2 Beta Air and Skin Dose Rates The range of beta particles in air is relatively small (on the order of a few meters or less); consequently, plumes of gaseous effluents may be considered "infinite" for purpose of calculating the dose from beta radiation incident on the skin. However, the actual dose to sensitive skin tissues is difficult to calculate due to the effect of the beta particle energies, thickness of inert skin and clothing covering sensitive tissues. For purposes of this report 2

the skin is taken to have a thickness of 7.0 mg/cm and an occupancy factor of 1.0 is used. The skin dose from beta and gamma radiation for the year was 2.80E-05 mrem based on concurrent meteorological data (Table 3.4-1).

The maximum offsite beta air dose for the year was 4

3.45E-05 mrad (Table 3.1-1) based on measured effluents and average meteorological data and 4.10E-05 mrad based on concurrent meteorological data (Table 3.4-1).

3.1.2 Radioactive Iodine & Particulate The human thyroid exhibits a significant capacity to concentrate ingested or inhaled iodine. 1-131 released during routine operation of the station may be made available to man resulting in a dose to the thyroid. C-14 is also included in this category. C-14 exhibits a capacity to concentrate in bone.

C-14 is released in gaseous form and is absorbed into vegetation through photosynthesis. The principal pathways of interest for C-1 4 are the consumption of vegetation by humans and milk from which animals have ingested C-14 through the consumption of vegetation. With the inclusion of C-14 in plant effluent calculations, human dose in this category is primarily driven by the release of C-14 from the plant.

The hypothetical dose to the maximum exposed individual living near the station via ingestion of milk and vegetation was calculated. The source of milk and vegetation was assumed to be at the nearest site boundary with the cows pastured and vegetation grown from May through October. The maximum dose from radioactive iodine and particulate (including C-14) to any organ was 2.23E+00 mrem (child/bone) based on measured effluents and average meteorological data and 2.65E+00 mrem based on concurrent meteorological data.

The maximum dose from radioactive iodine and particulate (including C-14) to the whole body was 5.73E-01 mrem (child) based on measured effluents and average meteorological data and 6.75E-01 mrem based on concurrent meteorological data.

3.2 Liquid Effluent Pathways The three principal pathways through the aquatic environment for potential doses to man from liquid waste are ingestion of potable water, eating aquatic foods, and exposure while on the shoreline. Not all of these pathways are significant or applicable at a given time or station but a reasonable approximation of the dose can be made by adjusting the dose formula for season of the year or type and degree of use of the aquatic environment. NRC developed equations* were used to calculate the doses to the whole body, lower GI tracts, thyroid, bone and skin; specific parameters for use in the equations are given 5

in the Exelon Offsite Dose Calculation Manual. The maximum whole body dose for the year was 4.64E-02 mrem and no organ dose exceeded 6.74E-02 mrem (Table 3.2-1 [child]).

3.3 Assessment of Dose to Member of Public During the period January to December, 2012, Braidwood Station did not exceed the following limits as shown in Table 3.1-1 and Table 3.2-1 (based on annual average meteorological data), Table 3.4-1 (based on concurrent meteorological data), and Table 3.3-1:

The RETS limits on dose or dose commitment to an individual due to radioactive materials in liquid effluents from each reactor unit (1.5 mrem to the whole body or 5 mrem to any organ during any calendar year; 3 mrem to the whole body or 10 mrem to any organ during the calendar year).

The RETS limits on air dose in noble gases released in gaseous effluents to a member of the public from each reactor unit (5 mrads for gamma radiation or 10 mrad for beta radiation during any calendar quarter; 10 mrad for gamma radiation or 20 mrad for beta radiation during a calendar year).

The RETS limits on dose to a member of the public due to iodine-131, iodine-133, tritium, and radionuclides in particulate form with half-lives greater than eight days in gaseous effluents released from each reactor unit (7.5 mrem to any organ during any calendar quarter; 15 mrem to any organ during any calendar year).

The IOCFR20 limit on Total Effective Dose Equivalent to individual members of the public (100 mrem) during any calendar year.

4.0 SITE METEOROLOGY A summary of the site meteorological measurements taken during each calendar quarter of the year is given in Appendix E. The data are presented as cumulative joint frequency distributions of the wind direction for the 203' level and wind speed class by atmospheric stability class determined from the temperature difference between the 199' and 30' levels. Data recovery for these measurements was 99.4% during 2012.

Nuclear Regulatory Commission, Regulatory Guide 1.109 (Rev. 1) 6

APPENDIX E-1 DATA TABLES AND FIGURES

Intentionally left blank Table 1.1-1 BRAIDWOOD NUCLEAR POWER STATION ANNUAL EFFLUENT REPORT FOR 2012 GAS RELEASES UNIT 1 (Docket Number 50-456)

SUMMATION OF ALL RELEASES Units 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Est. Total I I II I I Error% I A. FISSION AND ACTIVATION GAS RELEASES

1. Total Release Activity Ci 3.49E-02 1,24E-01 1.06E-01 1.43E-01 7.59

2. Average Release Rate jCi/sec

, 4.44E-03 1.58E-02 1.33E-02 1.80E-02

3. Percent of ODCM Limit - gamma % 5.56E-06 3.23E-05 1.74E-05 3.29E-05

4. Percent of ODCM Limit- beta % 1.35E-05 5.55E-05 4.18E-05 6.16E-05 B. Iodine Releases

1. Total Iodine Ci 1.24E-06 4.42E-04 7.62E-08 5.15E-06 33.20

2. Average Release Rate piCi/sec 1.58E-07 5.62E-05 9.58E-09 6.48E-07

3. Percent of ODCM Limit % 1.03E-05 1.17E-03 4.51E-07 5.12E-06 C. PARTICULATE (> 8 DAY HALF-LIFE) RELEASE

1. Particulates with half-lives > 8 days Ci <LLD <LLD <LLD 1.17E-05 19.80

2. Average Release Rate jtCi/sec <LLD <LLD <LLD 1.47E-06

3. Percent of ODCM Limit % N/A N/A N/A 2.12E-03

3. Gross Alpha Radioactivity Ci <LLD <LLD <LLD <LLD D. Tritium Releases

1. Total Release Activity Ci 2.91E+01 4.87E+01 6.16E+01 4.41E+01 8.07

2. Average Release Rate y.Ci/sec 3.70E+00 6.20E+00 7.75E+00 5.55E+00

3. Percent of ODCM Limit % 8.28E-02 1.39E-01 1.74E-01 1.25E-01 E. Gross Alpha Releases

1. Total Release Activity Ci <LLD <LLD <LLD <LLD 19.80

2. Average Release Rate jiCi/sec <LLD <LLD <LLD <LLD I 1- 4 +

U

3. Percent of ODCM limit %

.J__________

N/A

+/- __________ L N/A N/A

.1__________

N/A

.1. __________ I F. Carbon-14 Releases

11. Total Release Activity Ci 1.11E+00 I7.70E-01 I1.12E+00 f1.14E+00

2. Average Release Rate tCi/sec 1.41 E-01 9.80E-02 1.41 E-01 1.43E-01 Note: LLD Values are included in Appendix A of this report.

B-I .1

Table 1.1-1 (cont)

BRAIDWOOD NUCLEAR POWER STATION ANNUAL EFFLUENT REPORT FOR 2012 GAS RELEASES UNIT 2 (Docket Number 50-457)

SUMMATION OF ALL RELEASES Units 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Est. Total I I II I IError%

A. FISSION AND ACTIVATION GAS RELEASES

1. Total Activity Released Ci 3.49E-02 1.24E-01 1.06E-01 1.43E-01 7.59

2. Average Release Rate pjCi/sec 4.44E-03 1.58E-02 1.33E-02 1.79E-02

3. Percent of ODCM Limit - gamma % 5.56E-06 3.23E-05 1.74E-05 3.29E-05

4. Percent of ODCM Limit- beta % 1.35E-05 5.55E-05 4.18E-05 6.16E-05 B. IODINE RELEASES

1. Total Iodine Ci 7.41 E-06 6.70E-04 <LLD 3.55E-04 33.20

2. Average Release Rate piCi/sec 9.43E-07 8.52E-05 <LLD 4.47E-05

3. Percent of ODCM Limit % 7.18E-08 7.1OE-04 N/A 1.07E-05 C. PARTICULATE (> 8 DAY HALF-LIFE) RELEASE

1. Particulates with half-lives > 8 days Ci <LLD <LLD <LLD 8.86E-05 19.80

2. Average Release Rate pCi/sec <LLD <LLD <LLD 1.11 E-05

3. Percent of OCDM Limit % N/A N/A N/A 1.60E-02

4. Gross Alpha Radioactivity Ci <LLD <LLD <LLD <LLD D. Tritium Releases

1. Total Release Activity Ci 4.95E+01 9.09E+01 11.58E+02 8.87E+01 8.07

2. Average Release Rate p.Ci/sec 6.30E+00 1.16E+01 1.99E+01 1.12E+01

3. Percent of ODCM Limit % 1.40E-01 2.59E-01 4.49E-01 2.52E-01 E. Gross Alpha Releases

1. Total Release Activity Ci <LLD <LLD <LLD <LLD 19.80

2. Average Release Rate l.iCi/sec <LLD <LLD <LLD <LLD

3. Percent of ODCM Limit N/A N/A N/A N/A F. Carbon-14 Releases

1. Total Release Activity Ci I 1.09E+00 1.12E+00 1.412E+01 8.38E-01

12. Average Release Rate ACi/sec I1 .39E-01 1 .42E-01 1.41 E-01 1.05E-01 Note: LLD Values are included in Appendix A of this report.

E-1.2

Table 1.2-1 BRAIDWOOD NUCLEAR POWER STATION ANNUAL EFFLUENT REPORT FOR 2012 LIQUID RELEASES UNIT 1 (Docket Number 50-456)

SUMMATION OF ALL RELEASES Units I st Qtr 2nd Qtr 3rd Qtrl 4th Qtr ETta.

To l A. Fission and Activation Products

1. Total Release Ci 8.19E-02 4.46E-01 1.94E-03 1.19E-02 2.64

2. Average Diluted Concentration liCi/ml 1.13E-08 1.71E-07 6.78E-10 2.90E-09

3. Percent of applicable limit % ....

B. TRITIUM

1. Total Release Ci 3.26E+02 3.23E+02 1.69E+02 4.72E+02 5.85

2. Average Diluted Concentration i*Ci/ml 4.50E-05 1.23E-04 5.89E-05 1.15E-04

3. % of Limit (1E-2 jiCi/ml) % 4.50E-01 1.23E+00 5.89E-01 1.15E+00 C. Dissolved Noble Gases

1. Total Release Ci 0.00E+00 8.35E-06 0.OOE+00 O.OOE+00 2.64

2. Average Diluted Concentration ýiCi/ml 0.OOE+00 3.19E-12 0.OOE+00 0.OOE+ 00

3. % of Limit (2E-4 ViCi/ml) % O.OOE+00 1.60E-06 O.OOE+00 0.OOE+00 D. Gross Alpha

11. Total Release Ci 0.OOE+00 0.OOE+00O0.00E+00 1.OOE+00 14.70 E. Volume of Waste Released liters 3.94E+05 6.10E+05 3.02E+05 6.41E+05 (prnor to dilution)

IF. Volume of Dilution Water -liters 11.45E+10 5.23E+09 15.72E+09 8.17E+09 Note: LLD Values are included in Appendix A of this report.

Note: % Limit Values are included in Appendix B of this report.

This limit is equal to 10 times the concentration values in Appendix B, Table 2, Column 2 to 10CFR20.1001-20.2402.

E-1.3

Table 1.1-1 (cont)

BRAIDWOOD NUCLEAR POWER STATION ANNUAL EFFLUENT REPORT FOR 2012 GAS RELEASES UNIT 2 (Docket Number 50-457)

SUMMATION OF ALL RELEASES Units 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr EstTrror%

1. A. FISSION AND ACTIVATION GAS RELEASES

1. Total Activity Released Ci 3.49E-02 1.24E-01 1.06E-01 1.43E-01 7.59

2. Average Release Rate I.Ci/sec 4.44E-03 1.58E-02 1.33E-02 1.79E-02

3. Percent of ODCM Limit - gamma % 5.56E-06 3.23E-05 1.74E-05 3.29E-05

4. Percent of ODCM Limit - beta % 1.35E-05 5.55E-05 4.18E-05 6.16E-05

2. B. IODINE RELEASES

1. Total Iodine Ci 7.41E-06 6.70E-04 <LLD 3.55E-04 33.20

2. Average Release Rate piCi/sec 9.43E-07 8.52E-05 <LLD 4.47E-05

3. Percent of ODCM Limit % 7.18E-08 7.1OE-04 N/A 1.07E-05

3. C. PARTICULATE (> 8 DAY HALF-LIFE) RELEASES

1. Particulates with half-lives > 8 days Ci <LLD <LLD <LLD 8.86E-05 19.80

2. Average Release Rate PCi/sec <LLD <LLD <LLD 1. 11E-05

3. Percent of OCDM Limit % N/A N/A N/A 1.60E-02

4. Gross Alpha Radioactivity Ci <LLD <LLD <LLD <LLD D. Tritium Releases

1. Total Release Activity Ci 4.95E+01 9.09E+01 1.58E+02 8.87E+01 8.07

2. Average Release Rate piCi/sec 6.30E+00 1.16E+01 1.99E+01 1.12E+01

3. Percent of ODCM Limit % 1.40E-01 2.59E-01 4.49E-01 2.52E-01 E. Gross Alpha Releases

1. Total Release Activity

2. Average Release Rate

3. Percent of ODCM Limit 1~ Ci ptCi/sec 1~~ -i.

<LLD

<LLD N/A

<LLD

<LLD N/A

<LLD

<LLD N/A

<LLD

<LLD N/A 19.80 F. Carbon-14 Releases Total Release 11.2. Average Activity Release Rate II Ci/sec Ci I 1.09E+00 1.39E-01 1. 12E+00 1.

1.42E-01 12E+00 1.41E-01 I8.38E-01 1.05E-01 Note: LLD Values are included in Appendix A of this report.

E-i1.4

Table 3.1-1 GASEOUS RELEASE AND DOSE

SUMMARY

REPORT - BY UNIT (Composite Critical Receptor - Limited Analysis)

Release ID ........... .. 1 All Gas Release Types Period Start Date .... :.01/01/2012 00:00 Period End Date ...... :.01/01/2013 00:00 Period Duration (min): 5.270E+05 Coefficient Type ..... :.Historical Unit .................... 1

=== RELEASE DATA Total Release Duration (minutes) ............ .......................... 5.746E+05 Total Release Volume (cf) ................... .......................... 5 .212E+10 Average Release Flowrate (cfm) .............. .......................... 9.070E+04 Average Period Flowrate (cfm) ............... .......................... 9.889E+04

= NUCLIDE DATA Average ECrcent Nuclide uCi uCi/cc Ratio EC AR-41 1 . 38E+03 9. 34E-13 9.34E-05 1. OOE-08 KR-85M 3.30E+02 2 .24E-13 2.24E-06 1. OOE-07 KR-85 0.OOE+00 0 OOE+00 0.OOE+00 7 . OOE-07 KR-87 2. 05E+02 1.39E-13 6.94E-06 2. OOE-08 XE-133M 2. 63E+03 1.78E-12 2.97E-06 6.OOE-07 KR-83M 0. OOE+00 0 OOE+00 0.OOE+00 5. OOE-05 KR-88 0. OOE+00 0.OOE+00 0.OOE+00 9. OOE-09 XE-131M 0.OOE+00 0.OOE+00 O.OOE+00 2.OOE-06 XE-135 2.41E+04 1.63E-11 2.33E-04 7. OOE-08 XE-133 3.79E+05 2.57E-10 5.14E-04 5. OOE-07 F&AG 4. 08E+05 2.76E-10 8.53E-04 1-131 5. 56E+01 3.77E-14 1.88E-04 2. OOE-10 1-132 3. 86E+02 2.62E-13 1.31E-05 2. OOE-08 1-133 7.24E+00 4.90E-15 4.90E-06 1. OOE-09 1-135 0. OOE+00 O.OOE+00 0.OOE+00 6.OOE-09 Iodine 4.49E+02 3.04E-13 2.06E-04 BR-82 0. OOE+00 0.OOE+00 0.00E+00 5.OOE-09 C-14 4.14E+06 2.81E-09 9.35E-01 3. OOE-09 Other 4 .14E+06 2.81E-09 9.35E-01 H-3 1. 84E+08 1.24E-07 1.24E+00 1.00E-07 H-3 1. 84E+08 1.24E-07 1.24E+00 TC-99M 3.65E+00 2.48E-15 1.24E-08 2.OOE-07 E-1.5

Table 3.1-1 (cont.)

GASEOUS RELEASE AND DOSE

SUMMARY

REPORT - BY UNIT (Composite Critical Receptor - Limited Analysis)

Release ID ............ 1 All Gas Release Types Period Start Date .... 01/01/2012 00:00 Period End Date ....... 01/01/2013 00:00 Period Duration (min): 5.270E+05 Coefficient Type ..... Historical Unit .................. 1 NUCLIDE DATA Average ECrcent Nuclide uCi uCi/cc Ratio EC P<8 3.65E+00 2.48E-15 1.24E-08 CO-60 1. 17E+01 7. 94E-15 1. 59E-04 5. OOE-11 P>=8 1. 17E+01 7. 94E-15 1 . 59E-04 Total 1.88E+08 1.27E-07 2.18E+00 E-1.6

Table 3.1-1 (cont.)

GASEOUS RELEASE AND DOSE

SUMMARY

REPORT - BY UNIT (Composite Critical Receptor - Limited Analysis)

Release ID ............. 1 All Gas Release Types Period Start Date .... :.01/01/2012 00:00 Period End Date ...... :.01/01/2013 00:00 Period Duration (min): 5.270E+05 Coefficient Type ..... Historical Unit .................... 1 Receptor ............... 5 Composite Crit. Receptor - IP Distance (meters) .... :.0.0 Compass Point ......... : 0.0 PERIOD DOSE BY AGEGROUP, PATHWAY, ORGAN (mrem)

Age/Path Bone Liver Thyroid Kidney Lung GI-LIi Skin TB AGPD 1 . 50E-04 1 . 50E-04 1 . 50E-04 1. 50E-04 1. 50E-04 1. 50E-04 0. OOE+00 1 . 50E-04 AINHL 2. 77E-03 5. 37E-03 5. 40E-03 5. 37E-03 5. 38E-03 5. 37E-03 0. OOE+00 5. 37E-03 AVEG 1.37E-01 3. 60E-02 3.71E-02 3. 60E-02 3. 60E-02 3. 60E-02 0. OOE+00 3. 60E-02 AGMILK 4 .11E-03 6.84E-03 1. 16E-02 6. 85E-03 6. 82E-03 6. 83E-03 0. OOE+00 6. 83E-03 ACMEAT 5. 07E-02 1. 14E-02 1. 15E-02 1. 14E-02 1. 14E-02 1. 14E-02 0. 00E+00 1. 14E-02 ACMILK 5. 53E-02 1.40E-02 1 . 80E-02 1 .40E-02 1. 40E-02 1 . 40E-02 0. OOE+00 1. 40E-02 TGPD 1. 50E-04 1.50E-04 1.50E-04 1.50E-04 1 .50E-04 1. 50E-04 0. OOE+00 1 .50E-04 TINHL 3. 96E-03 5. 64E-03 5. 67E-03 5. 64E-03 5. 64E-03 5. 64E-03 0. OOE+00 5. 64E-03 TVEG 2. 21E-01 5. 43E-02 5. 52E-02 5. 43E-02 5. 43E-02 5. 43E-02 0. OOE+00 5. 43E-02 TGMILK 7. 42E-03 9. 31E-03 1. 69E-02 9. 33E-03 9. 28E-03 9. 29E-03 0. OOE+00 9. 30E-03 TCMEAT 4 .28E-02 9. 31E-03 9. 42E-03 9. 31E-03 9. 31E-03 9. 31E-03 0. OOE+00 9. 31E-03 TCMILK 1.02E-01 2.43E-02 3 . 06E-02 2.43E-02 2. 42E-02 2 .43E-02 0. OOE+00 2.43E-02 CGPD 1 . 50E-04 1 . 50E-04 1 . 50E-04 1 . 50E-04 1 . 50E-04 1. 50E-04 0. OOE+00 1 . 50E-04 CINHL 5 47E-03 5.35E-03 5.39E-03 5. 35E-03 5. 35E-03 5. 35E-03 0. OOE+00 5. 35E-03 CVEG 5. 33E-01 1.22E-01 1.24E-01 1.22E-01 1.22E-01 1.22E-01 0. OOE+00 1.22E-01 CGMILK 2. 38E-01 6.25E-02 7.76E-02 6. 26E-02 6.25E-02 6. 25E-02 0. OOE+00 6.25E-02 CCMEAT 8. 06E-02 1.71E-02 1 . 72E-02 1.71E-02 1.71E-02 1.71E-02 0. OOE+00 1.71E-02 CCMILK 2. 51E-01 5. 62E-02 6.88E-02 5. 63E-02 5. 62E-02 5. 62E-02 0. OOE+00 5. 62E-02 IGPD 1. 50E-04 1. 50E-04 1. 50E-04 1 . 50E-04 1 . 50E-04 1 . 50E-04 0. OOE+00 1. 50E-04 IINHL 4. 04E-03 3. 30E-03 3. 33E-03 3. 30E-03 3. 30E-03 3. 30E-03 0. OOE+00 3. 30E-03 IGMILK 4. 92E-01 1 .24E-01 1. 60E-01 1.24E-01 1.24E-01 1.24E-01 0. OOE+00 1.24E-01 ICMILK 4. 92E-01 1. 14E-01 1. 45E-01 1. 14E-01 1. 14E-01 1. 14E-01 0. OOE+00 1. 14E-01 PERIOD DOSE BY AGEGROUP, ORGAN (mrem)-------

Agegroup Bone Liver Thyroid Kidney Lung GI-Lli Skin TB ADULT 2. 50E-01 7. 38E-02 8. 39E-02 7. 38E-02 7. 37E-02 7. 38E-02 0. OOE+00 7. 38E-02 TEEN 3. 77E-01 1. 03E-01 1. 18E-01 1.03E-01 1. 03E-01 1.03E-01 0. OOE+00 1.03E-01 CHILD 1. 11E+00 2. 64E-01 2. 93E-01 2. 64E-01 2. 64E-01 2. 64E-01 0.OOE+00 2. 64E-01 INFANT 9.89E-01 2. 42E-01 3. 09E-01 2. 42E-01 2.41E-01 2.41E-01 0.OOE+00 2. 41E-01 E-1.7

Table 3.1-1 (cont.)

GASEOUS RELEASE AND DOSE

SUMMARY

REPORT - BY UNIT (Composite Critical Receptor - Limited Analysis)

Release ID ............. 1 All Gas Release Types Period Start Date .... : 01/01/2012 00:00 Period End Date ...... .. 01/01/2013 00:00 Period Duration (min): 5.270E+05 Coefficient Type ..... .. Historical Unit .................... 1 Receptor ................. 5 Composite Crit. Receptor - IP Distance (meters) .... :.0.0 Compass Point ......... : 0.0 MAXIMUM PERIOD DOSE TO LIMIT (Any Organ)--------

Dose Age Dose Limit Admin Admin % T. Spec T.Spec %

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End CHILD BONE 1. 11E+0 0 31-day 2.25E-01 4 .93E+02 3. OOE-01 3.70E+02 Qrtr->End CHILD BONE 1. 1lE+0 0 Quarter 5.63E+00 1. 97E+01 7.50E+00 1.48E+01 Year->End CHILD BONE 1.11E+0 0 Annual 1.13E+01 9. 86E+00 1. 50E+01 7. 39E+00 Critical Pathway ......... 2 Vegetation (VEG)

Major Contributors ...... :.0.0 % or greater to total Nuclide Percentage H-3 0.OOE+00 C-14 1.OOE+02 CO-60 1.35E-02 TC-99M 3.16E-08 1-131 7.96E-03 1-132 2.53E-05 1-133 1.53E-05 1-135 0.OOE+00

=== MAXIMUM PERIOD DOSE TO LIMIT ( Tot Body)

Dose Age Dose Limit Admin Admin % T. Spec T.Spec %

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End CHILD TBODY Qrtr->End CHILD TBODY 2.64E-01 31-day 1.50E-01 1. 76E+02 2. OOE-01 1. 32E+02 Year->End CHILD TBODY 2.64E-01 Quarter 5. 25E+00 5. 02E+00 7. 50E+00 3.51E+00 2.64E-01 Annual 1.05E+01 2. 51E+00 1.50E+01 1 . 76E+00 Critical Pathway ......... 2 Vegetation (VEG)

Major Contributors ...... :.0.0 % or greater to total Nuclide Percentage H-3 1.48E+01 C-14 8.50E+01 CO-60 6.03E-02 TC-99M 1.33E-07 1-131 1.92E-02 1-132 1.05E-04 1-133 3.19E-05 E- 1.8

Table 3.1-1 (cont.)

GASEOUS RELEASE AND DOSE

SUMMARY

REPORT - BY UNIT (Composite Critical Receptor - Limited Analysis)

Release ID ............ 1 All Gas Release Types Period Start Date .... 01/01/2012 00:00 Period End Date ....... 01/01/2013 00:00 Period Duration (min): 5. 270E+05 Coefficient Type ..... Historical Unit .................. 1 Major Contributors ...... : 0.0 % or greater to total Nuclide Percentage 1-135 0.OOE+00 E- 1.9

Table 3.1-1 (cont.)

GASEOUS RELEASE AND DOSE

SUMMARY

REPORT - BY UNIT (Composite Critical Receptor - Limited Analysis)

Release ID ............. 1 All Gas Release Types Period Start Date .... .. 01/01/2012 00:00 Period End Date ...... .. 01/01/2013 00:00 Period Duration (min): 5.270E+05 Coefficient Type ..... :.Historical Unit .................... 1 Receptor ............... 4 Composite Crit. Receptor - NG Distance (meters) .... :.0.0 Compass Point ........ .. 0.0 MAXIMUM PERIOD NG DOSE TO LIMIT (Gamma)

Dose Dose Limit Admin Admin % T. Spec T.Spec %

Period Dose Type (mrad) Period Limit of Limit Limit of Limit Strt->End Gamma 4.41E-06 Qrtr->End Gamma 4.41E-06 31-day 1.50E-01 2. 94E-03 2. OOE-01 2. 21E-03 Year->End Gamma 4.41E-06 Quarter 3. 75E+00 1. 18E-04 5. OOE+00 8 .82E-05 Annual 7. 50E+00 5. 88E-05 1.00E+01 4.41E-05 Major Contributors ...... .. 0.0 % or greater to total Nuclide Percentage AR-41 6.56E+00 KR-85M 2.08E-01 KR-85 0.OOE+00 KR-87 6.47E-01 XE-133M 4.41E-01 KR-83M 0.OOE+00 KR-88 0.OOE+00 XE-131M 0.OOE+00 XE-135 2.37E+01 XE-133 6.85E+01 MAXIMUM PERIOD NG DOSE TO LIMIT (Beta))

Dose Dose Limit Admin Admin % T.Spec T.Spec %

Period Dose Type (mrad) Period Limit of Limit Limit of Limit Strt->End Beta 1.72E-05 Qrtr->End Beta 1.72E-05 31-day 3. OOE-01 5. 75E-03 4 . OOE-01 4.31E-03 Year->End Beta 1.72E-05 Quarter 7. 50E+00 2. 30E-04 1. OOE+01 1 .72E-04 Annual 1. 50E+01 1. 15E-04 2.OOE+01 8. 62E-05 Major Contributors ...... .. 0.0 % or greater to total Nuclide Percentage AR-41 9.65E-01 KR-85M 1.39E-01 KR-85 0.OOE+00 KR-87 4.51E-01 XE-133M 8.32E-01 KR-83M 0.OOE+00 KR-88 0.OOE+00 XE-131M 0.OOE+00 XE-135 1.26E+01 E-1.1O

Table 3.1-1 (cont.)

GASEOUS RELEASE AND DOSE

SUMMARY

REPORT - BY UNIT (Composite Critical Receptor - Limited Analysis)

Release ID ........... 1 All Gas Release Types Period Start Date .... 01/01/2012 00:00 Period End Date ....... 01/01/2013 00:00 Period Duration (min): 5.270E+05 Coefficient Type ..... Historical Unit ..................

Major Contributors ...... : 0.0 % or greater to total Nuclide Percentage XE-133 8.50E+01 E-1.11

Table 3.1-1 (cont.)

GASEOUS RELEASE AND DOSE

SUMMARY

REPORT - BY UNIT (Composite Critical Receptor - Limited Analysis)

Release ID ............. 1 All Gas Release Types Period Start Date .... :.01/01/2012 00:00 Period End Date ...... .. 01/01/2013 00:00 Period Duration (min): 5.270E+05 Coefficient Type ..... Historical Unit .................... 2 RELEASE DATA Total Release Duration (minutes). 5.632E+05 Total Release Volume (cf) ........ 7.473E+10 Average Release Flowrate (cfm) ... 1.327E+05 Average Period Flowrate (cfm) ......................................... 1.418E+05 NUCLIDE DATA Average ECrcent Nuclide uCi uCi/cc Ratio EC AR-41 1 .38E+03 6. 51E-13 6.51E-05 1 . OOE-08 KR-85M 3. 30E+02 1. 56E-13 1.56E-06 1. OOE-07 KR-85 0. OOE+00 0 OOE+00 0.OOE+00 7. OOE-07 KR-87 2. 05E+02 9. 69E-14 4.84E-06 2. OOE-08 XE-133M 2. 63E+03 1. 24E-12 2.07E-06 6. OOE-07 KR-83M 0. OOE+00 0. OOE+00 0.OOE+00 5. OOE-05 KR-88 0. OOE+00 0. OOE+00 0.OOE+00 9. OOE-09 XE-131M 0. OOE+00 0. OOE+00 0.OOE+00 2. OOE-06 XE-135 2. 41E+04 1. 14E-11 1.63E-04 7. OOE-08 XE-133 3. 79E+05 1 79E-10 3.58E-04 5. OOE-07 F&AG 4.08E+05 1.93E-10 5.95E-04 1-131 3. 19E+01 1. 51E-14 7. 53E-05 2. OOE-10 1-132 8. 84E+02 4 .18E-13 2. 09E-05 2. OOE-08 1-133 1. 16E+02 5. 50E-14 5. 50E-05 1. OOE-09 Iodine 1.03E+03 4.88E-13 1.51E-04 C-14 4.17E+06 1.97E-09 6.57E-01 3.OOE-09 Other 4.17E+06 1.97E-09 6.57E-01 H-3 3.87E+08 1.83E-07 1.83E+00 1.OOE-07 H-3 3.87E+08 1.83E-07 1.83E+00 AG-108M 0.OOE+00 0.OOE+00 0.OOE+00 3.OOE-ll CO-60 8.86E+01 4.19E-14 8.38E-04 5.OOE-f1 E-1.12

Table 3.1-1 (cont.)

GASEOUS RELEASE AND DOSE

SUMMARY

REPORT - BY UNIT (Composite Critical Receptor - Limited Analysis)

Release ID ............ 1 All Gas Release Types Period Start Date .... 01/01/2012 00:00 Period End Date ....... 01/01/2013 00:00 Period Duration (min): 5. 270E+05 Coefficient Type ..... Historical Unit .................. 2 NUCLIDE DATA Average ECrcent Nuclide uCi uCi/cc Ratio EC P>=8 8.86E+01 4.19E-14 8.38E-04 Total 3.92E+08 1.85E-07 2.49E+00 E-1.13

Table 3.1-1 (cont.)

GASEOUS RELEASE AND DOSE

SUMMARY

REPORT - BY UNIT (Composite Critical Receptor - Limited Analysis)

Release ID ........... : 1 All Gas Release Types Period Start Date .... : 01/01/2012 00:00 Period End Date ...... : 01/01/2013 00:00 Period Duration (min): 5.270E+05 Coefficient Type ..... :.Historical Unit .................... 2 Receptor ............... 5 Composite Crit. Receptor - IP Distance (meters) .... :.0.0 Compass Point ........ :.0.0 PERIOD DOSE BY AGEGROUP, PATHWAY, ORGAN (mrem)

Age/Path Bone Liver Thyroid Kidney Lung GI-Lli Skin TB AGPD 1. 13E-03 1 .13E-03 1 .13E-03 1. 13E-03 1. 13E-03 1. 13E-03 0. 00E+00 1. 13E-03 AINHL 2. 79E-03 1 .08E-02 1.08E-02 1. 08E-02 1. 08E-02 1.08E-02 0.OOE+00 1.08E-02 AVEG 1.38E-01 4. 59E-02 4. 65E-02 4. 58E-02 4.58E-02 4. 60E-02 0. OOE+00 4.59E-02 AGMILK 4 .13E-03 1 . 35E-02 1 . 63E-02 1 .35E-02 1. 35E-02 1. 35E-02 0.005E+00 1. 35E-02 ACMEAT 5. 11E-02 1.29E-02 1 .29E-02 1. 29E-02 1.29E-02 1.29E-02 0. OOE+00 1.29E-02 ACMILK 5. 57E-02 1 . 74E-02 1. 97E-02 1.74E-02 1 .73E-02 1.74E-02 0.00E+00 1 .74E-02 TGPD 1 . 13E-03 1. 13E-03 1 . 13E-03 1. 13E-03 1. 13E-03 1. 13E-03 0. OOE+00 1. 13E-03 TINHL 3. 99E-03 1. IIE-02 1. 11E-02 1. lIE-02 1.11E-02 1.11E-02 0. OOE+00 1.11E-02 TVEG 2. 23E-01 6. 57E-02 6. 62E-02 6. 57E-02 6. 57E-02 6.58E-02 0. OOE+00 6.57E-02 TGMILK 7. 47E-03 I 80E-02 2.24E-02 1. 80E-02 1. 80E-02 1. 80E-02 0.00E+00 1.80E-02 TCMEAT 4 31E-02 1 . 02E-02 1 . 03E-02 1 . 02E-02 1.02E-02 1.02E-02 0. OOE+00 1. 02E-02 TCMILK 1. 03E-01 2. 87E-02 3.24E-02 2 .87E-02 2.86E-02 2. 87E-02 0. OOE+00 2.86E-02 CGPD 1. 13E-03 1.13E-03 1 . 13E-03 1. 13E-03 1. 13E-03 1.13E-03 0.0. OOE+00 005+00 1. 13E-03 CINHL 5. 51E-03 1. 02E-02 1.02E-02 1.02E-02 1 . 02E-02 1 . 02E-02 O.OOE+O0 1. 02E-02 CVEG 5. 37E-01 1. 40E-01 1.41E-01 1. 40E-01 1. 40E-01 1.40E-01 0.OOE+00 1.40E-01 CGMILK 2. 39E-01 7. 66E-02 8. 55E-02 7. 66E-02 7. 66E-02 7. 66E-02 0.OOE+00 7. 66E-02 CCMEAT 8. 12E-02 1 . 82E-02 1 . 83E-02 1.82E-02 1.82E-02 1.82E-02 0. OOE+00 1. 82E-02 CCMILK 2. 53E-01 6. 33E-02 7. 07E-02 6. 33E-02 6. 33E-02 6. 33E-02 0. 00E+00 6. 33E-02 IGPD 1. 13E-03 1. 13E-03 1 . 13E-03 1. 13E-03 1. 13E-03 1. 13E-03 0. 00E+00 1. 13E-03 IINHL 4 .07E-03 6. 06E-03 6. 1OE-03 6.06E-03 6. 08E-03 6.06E-03 0. 00E+00 6.06E-03 IGMILK 4 .96E-01 I. 45E-01 1. 67E-01 1. 45E-01 1.45E-01 1. 45E-01 0.00E+00 1.45E-01 ICMILK 4. 96E-01 1.25E-01 1. 43E-01 1.25E-01 1.25E-01 1.25E-01 0.00E+00 1.25E-01 PERIOD DOSE BY AGEGROUP, ORGAN (mrem)

Agegroup Bone Liver Thyroid Kidney Lung GI-Lli Skin TB ADULT 2.53E-01 1.01E-01 1.07E-01 1.01E-01 1.01E-01 1. 02E-01 0. OOE+00 1. 01E-01 TEEN 3.81E-01 1.35E-01 1.44E-01 1.35E-01 1 . 35E-01 1. 35E-01 0.00E+00 1. 35E-01 CHILD 1.12E+00 3.10E-01 3.27E-01 3.10E-01 3. 1OE-01 3. 1OE-01 0. OOE+00 3. 1OE-01 INFANT 9.97E-01 2.78E-01 3.17E-01 2.78E-01 2. 78E-01 2.78E-01 0.OOE+00 2. 78E-01 E-i .14

Table 3.1-1 (cont.)

GASEOUS RELEASE AND DOSE

SUMMARY

REPORT - BY UNIT (Composite Critical Receptor - Limited Analysis)

Release ID ............ : 1 All Gas Release Types Period Start Date .... 01/01/2012 00:00 Period End Date ...... :.01/01/2013 00:00 Period Duration (min): 5.270E+05 Coefficient Type ..... Historical Unit .................... 2 Receptor ............... 5 Composite Crit. Receptor - IP Distance (meters) .... : 0.0 Compass Point ........ :.0.0

=== MAXIMUM PERIOD DOSE TO LIMIT (Any Organ)

Dose Age Dose Limit Admin Admin % T.Spec T.Spec %

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End CHILD BONE 1.12E+00 31-day 2.25E-01 4.97E+02 3.00E-01 3.73E+02 Qrtr->End CHILD BONE 1.12E+00 Quarter 5. 63E+00 1. 99E+01 7.50E+00 1.49E+01 Year->End CHILD BONE 1.12E+00 Annual 1. 13E+01 9. 94E+00 1.50E+01 7.45E+00 Critical Pathway ......... 2 Vegetation (VEG)

Major Contributors ...... .. 0.0 % or greater to total Nuclide Percentage H-3 0.OOE+00 C-14 1.OOE+02 CO-60 1.01E-01 1-131 4.52E-03 1-132 5.74E-05 1-133 2.44E-04

=== MAXIMUM PERIOD DOSE TO LIMIT (Tot Body))

Dose Age Dose Limit Admin Admin % T. Spec T.Spec %

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End CHILD TBODY 3. IOE-01 31-day 1.50E-01 2. 06E+02 2. OOE-01 1. 55E+02 Qrtr->End CHILD TBODY 3. 1OE-01 Quarter 5. 25E+00 5. 90E+00 7. 50E+00 4. 13E+00 Year->End CHILD TBODY 3. lOE-01 Annual 1.05E+01 2. 95E+00 1.50E+01 2. 06E+00 Critical Pathway ....... 2 Vegetation (VEG)

Major Contributors ..... 0.0 % or greater to total Nuclide Percentage H-3 2.66E+01 C-14 7.30E+01 CO-60 3.88E-01 1-131 9.37E-03 1-132 2.05E-04 1-133 4.36E-04 E-1.15

Table 3.1-1 (cont.)

GASEOUS RELEASE AND DOSE

SUMMARY

REPORT - BY UNIT (Composite Critical Receptor - Limited Analysis)

Release ID ............. 1 Ill Gas Release Types Period Start Date .... .. 01/( 01/2012 00:00 Period End Date ....... : 01/( 01/2013 00:00 Period Duration (min): 5.2 70E+05 Coefficient Type ..... :.Hisitorical Unit .................... 2 Receptor ............... 4 Composite Crit. Receptor - NG Distance (meters) .... :.0.0 Compass Point ........ :.0.0

--- MAXIMUM PERIOD NG DOSE TO LIMIT (Gamma)

Dose Dose Limit Admi n Admin % T. Spec T.Spec %

Period Dose Type (mrad) Period Limit of Limit Limit of Limit Strt->End Gamma 4.41E-06 Qrtr->End Gamma 4.41E-06 31-day 1. 50E-01 2. 94E-03 2 . OOE-01 2.21E-03 Year->End Gamma 4.41E-06 Quarter 3. 75E+00 1. 18E-04 5. OOE+00 8.82E-05 Annual 7. 50E+00 5. 88E-05 1. OOE+01 4.41E-05 Major Contributors ...... :.0.0 % or greater to total Nuclide Percentage AR-41 6.56E+00 KR-85M 2.08E-01 KR-85 0.OOE+00 KR-87 6.47E-01 XE-133M 4.41E-01 KR-83M 0.OOE+00 KR-88 0.OOE+00 XE-131M 0.OOE+00 XE-135 2.37E+01 XE-133 6.85E+01

--- MAXIMUM PERIOD NG DOSE TO LIMIT (Beta))

Dose Dose Limit Admin Admin % T.Spec T.Spec %

Period Dose Type (mrad) Period Limit of Limit Limit of Limit Strt->End Beta 1.72E-05 Qrtr->End Beta 1.72E-05 31-day 3.OOE-01 5.75E-03 4.OOE-01 4.31E-03 Year->End Beta 1.72E-05 Quarter 7.50E+00 2.30E-04 1.00E+01 1.72E-04 Annual 1.50E+01 1.15E-04 2.OOE+01 8.62E-05 Major Contributors ...... .. 0.0 % or greater to total Nuclide Percentage AR-41 9.65E-01 KR-85M 1.39E-01 KR-85 0.OOE+00 KR-87 4.51E-01 XE-133M 8.32E-01 KR-83M 0.OOE+00 KR-88 0.00E+00 XE-131M 0.OOE+00 XE-135 1.26E+01 E-1.16

Table 3.1-1 (cont.)

GASEOUS RELEASE AND DOSE

SUMMARY

REPORT - BY UNIT (Composite Critical Receptor - Limited Analysis)

Release ID ............. 1 All Gas Release Types Period Start Date .... .. 01/01/2012 00:00 Period End Date ...... .. 01/01/2013 00:00 Period Duration (min): 5.270E+05 Coefficient Type ..... :.Historical Unit .................... 2 Major Contributors ...... : 0.0 % or greater to total Nuclide Percentage XE-133 8.50E+01 E-i. 17

Table 3.2-1 LIQUID RELEASE AND DOSE

SUMMARY

REPORT

(PERIOD BASIS - BY UNIT)

Release ID .............. 1 All Liquid Release Types Period Start Date ..... :.01/01/2012 00:00 Period End Date ....... :.01/01/2013 00:00 Period Duration (mins): 5.270E+05 Unit .................... : 1

=== MULTIPLE RELEASE POINT MESSAGE Undiluted and Diluted Flowrate(s) and Concentration(s) cannot be combined.

RELEASE DATA Total Release Duration (minutes) ..................................... 1.848E+06 Total Undiluted Volume Released (gallons) ............................ NA Average Undiluted Flowrate (gpm) ..................................... NA Total Dilution Volume (gallons) ...................................... NA Average Dilution Flowrate (gpm) ...................................... NA

--- NUCLIDE DATA Nuclide uCi CO-57 8.58E+00 NB-97 5.99E+01 SN-113 5.30E+00 SB-124 2.45E+02 SB-125 8.67E+03 TE-123M 1.91E+02 CR-51 5.18E+05 MN-54 1.31E+02 FE-59 2.98E+02 CO-58 4.37E+03 CO-60 3.17E+03 ZR-95 7.31E+01 NB-95 1.67E+02 AG-ilOM 8.02E+01 TE-125M 5.49E+03 TE-129M 3.53E+01 TE-132 1.07E+01 1-132 7.80E+00 W-187 4.58E+00 Gamma 5.41E+05 XE-133M 8.34E+00 D&EG 8.34E+00 H-3 1.29E+09 NI-63 1.09E+03 SR-91 4.69E+00 E- 1.18

Table 3.2-1 (cont.)

LIQUID RELEASE AND DOSE

SUMMARY

REPORT

(PERIOD BASIS - BY UNIT)------

Release ID .............. 1 All Liquid Release Types Period Start Date ..... :.01/01/2012 00:00 Period End Date ........ 01/01/2013 00:00 Period Duration (mins): 5.270E+05

=== NUCLIDE DATA ------

Nuclide uCi Beta 1.29E+09 Total 1.29E+09 E- 1.19

Table 3.2-1 (cont.)

LIQUID RELEASE AND DOSE

SUMMARY

REPORT

(PERIOD BASIS - BY UNIT)------

Release ID .............. 1 All Liquid Release Types Period Start Date ..... :.01/01/2012 00:00 Period End Date ....... :.01/01/2013 00:00 Period Duration (mins): 5.270E+05 Unit ..................... 1 Receptor ................ 0 Liquid Receptor PERIOD DOSE BY AGEGROUP, PATHWAY, ORGAN (mrem)

Age/Path Bone Liver Thyroid Kidney Lung GI-Lli Skin TB APWtr 2.16E-05 1 . 48E-02 1.48E-02 1.48E-02 1.48E-02 1. 49E-02 0.00E+00 1.48E-02 AFWFSp 1.28E-03 6.39E-03 6.25E-03 7.68E-03 6.16E-03 1 .94E-02 0.00E+00 6. 31E-03 TPWtr 2. 06E-05 1.04E-02 1.04E-02 1.04E-02 1.04E-02 1.05E-02 0.OOE+00 1.04E-02 TFWFSp 1. 35E-03 4. 99E-03 4.83E-03 4.77E-03 4.74E-03 1 .42E-02 0. OOE+00 4.89E-03 CPWtr 6. 26E-05 2. OOE-02 2.00E-02 2.00E-02 2.00E-02 2. 01E-02 0.00E+00 2. OOE-02 CFWFSp 1.75E-03 4.16E-03 4.06E-03 3.95E-03 3.92E-03 7.29E-03 0.OOE+00 4.12E-03 IPWtr 5. 13E-05 1. 96E-02 1.96E-02 1.96E-02 1.96E-02 1. 97E-02 0.OOE+00 1 . 96E-02

=== PERIOD DOSE BY AGEGROUP, ORGAN (mrem)

Agegroup Bone Liver Thyroid Kidney Lung GI-Lli Skin TB ADULT 1.30E-03 2.12E-02 2.10E-02 2.25E-02 2.09E-02 3.43E-02 0.00E+00 2.11E-02 TEEN 1.37E-03 1.54E-02 1.53E-02 1.52E-02 1.52E-02 2.46E-02 0.00E+00 1.53E-02 CHILD 1.82E-03 2.42E-02 2.41E-02 2.40E-02 2.39E-02 2.73E-02 0.00E+00 2.41E-02 INFANT 5.13E-05 1.96E-02 1.96E-02 1.96E-02 1.96E-02 1.97E-02 0.00E+00 1.96E-02 E-1.20

Table 3.2-1 (cont.)

LIQUID RELEASE AND DOSE

SUMMARY

REPORT

(PERIOD BASIS - BY UNIT)

Release ID .............. 1 All Liquid Release Types Period Start Date ..... :.01/01/2012 00:00 Period End Date ....... .. 01/01/2013 00:00 Period Duration (mins): 5.270E+05 Unit ..................... 1 Receptor ................ 0 Liquid Receptor MAXIMUM PERIOD DOSE TO LIMIT (Any Organ)

Dose Age Dose Limit Admin Admin % T. Spec T.Spec %

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End ADULT GILLI 3. 43E-02 31-day 1. 50E-01 2. 28E+01 2. 00E-01 1.71E+01 Qrtr->End ADULT GILLI 3. 43E-02 Quarter 3. 75E+00 9.14E-01 5. OOE+00 6.85E-01 Year->End ADULT GILLI 3. 43E-02 Annual 7. 50E+00 4. 57E-01 1. OOE+01 3. 43E-01 Critical Pathway ....... 1 Fresh Water Fish - Sport (FFSP)

Major Contributors ..... 0.0 % or greater to total Nuclide Percentage H-3 6.10E+01 CR-51 1.30E+01 MN-54 1.35E-01 FE-59 1.89E-01 CO-58 6.30E-01 CO-60 1.21E+00 NI-63 3.85E-02 SR-91 7.44E-04 ZR-95 2.26E-03 NB-95 1.92E+01 AG-IIOM 3.97E-03 TE-125M 4.32E+00 TE-129M 1.50E-01 TE-132 6.04E-02 1-132 2.49E-06 W-187 2.83E-02

=== MAXIMUM PERIOD DOSE TO LIMIT ( Tot Body))

Dose Age Dose Limit Admin Admin % T.Spec T.Spec %

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End CHILD TBODY Qrtr->End CHILD TBODY 2.41E-02 31-day 4.50E-02 5.36E+01 6.OOE-02 4.02E+01 2.41E-02 Quarter 1.13E+00 2.15E+00 1.50E+00 1.61E+00 Year->End CHILD TBODY 2.41E-02 Annual 2.25E+00 1.07E+00 3.OOE+00 8.04E-01 Critical Pathway ........ :.0 Potable Water (PWtr)

Major Contributors ...... .. 0.0 % or greater to total Nuclide Percentage H-3 9. 90E+01 CR-51 8.16E-02 E-i1.21

Table 3.2-1 (cont.)

LIQUID RELEASE AND DOSE

SUMMARY

REPORT

(PERIOD BASIS - BY UNIT)------

Release ID .............. 1 All Liquid Release Types Period Start Date ...... : 01/01/2012 00:00 Period End Date ....... :.01/01/2013 00:00 Period Duration (mins): 5.270E+05 Major Contributors ...... : 0.0 % or greater to total Nuclide Percentage MN-54 1. 29E-02 FE-59 3. 54E-02 CO-58 1. 12E-01 CO-60 2. 30E-01 NI-63 1. 79E-01 SR-91 1 . 26E-05 ZR-95 1. 12E-06 NB-95 2. 67E-03 AG-IIOM 1. 38E-05 TE-125M 2. 88E-01 TE-129M 9. 20E-03 TE-132 1. 99E-03 1-132 8. 83E-06 W-187 5. 35E-05 E-1.22

Table 3.2-1 (cont.)

LIQUID RELEASE AND DOSE

SUMMARY

REPORT

(PERIOD BASIS - BY UNIT)

Release ID .............. 1 All Liquid Release Types Period Start Date ..... .. 01/01/2012 00:00 Period End Date ....... .. 01/01/2013 00:00 Period Duration (mins): 5.270E+05 Unit .................... : 2 MULTIPLE RELEASE POINT MESSAGE = ---------------------

Undiluted and Diluted Flowrate(s) and Concentration(s) cannot be combined.

RELEASE DATA Total Release Duration (minutes) ..................................... 1.848E+06 Total Undiluted Volume Released (gallons) ............................ NA Average Undiluted Flowrate (gpm) ..................................... NA Total Dilution Volume (gallons) ...................................... NA Average Dilution Flowrate (gpm) ...................................... NA

=== NUCLIDE DATA Nuclide uCi CO-57 8.58E+00 NB-97 5.99E+01 SN-113 5.30E+00 SB-124 2.45E+02 SB-125 8.67E+03 TE-123M 1.91E+02 CR-51 5.18E+05 MN-54 1.31E+02 FE-59 2.98E+02 CO-58 4.37E+03 CO-60 3.17E+03 ZR-95 7.31E+01 NB-95 1.67E+02 AG-11OM 8.02E+01 TE-125M 5.49E+03 TE-129M 3.53E+01 TE-132 1.07E+01 1-132 7.80E+00 W-187 4.58E+00 Gamma 5.41E+05 XE-133M 8.34E+00 D&EG 8.34E+00 H-3 1.29E+09 NI-63 1.09E+03 SR-91 4.69E+00 E-1.23

Table 3.2-1 (cont.)

LIQUID RELEASE AND DOSE

SUMMARY

REPORT

(PERIOD BASIS - BY UNIT)

Release ID .............. 1 All Liquid Release Types Period Start Date ..... :.01/01/2012 00:00 Period End Date ....... :.01/01/2013 00:00 Period Duration (mins): 5.270E+05 NUCLIDE DATA Nuclide uCi Beta 1.29E+09 Total 1.29E+09 E-1.24

Table 3.2-1 (cont.)

LIQUID RELEASE AND DOSE

SUMMARY

REPORT

(PERIOD BASIS - BY UNIT)

Release ID .............. 1 All Liquid Release Types Period Start Date ..... :.01/01/2012 00:00 Period End Date ........ : 01/01/2013 00:00 Period Duration (mins): 5.270E+05 Unit ................... : 2 Receptor ................ 0 Liquid Receptor

== PERIOD DOSE BY AGEGROUP, PATHWAY, ORGAN (mrem)

Age/Path Bone Liver Thyroid Kidney Lung GI-Lli Skin TB APWtr 2.16E-05 1. 48E-02 1.48E-02 1 . 48E-02 1. 48E-02 1. 49E-02 0. OOE+00 1. 48E-02 AFWFSp 1.28E-03 6. 39E-03 6.25E-03 7. 68E-03 6. 16E-03 1. 94E-02 0. OOE+00 6.31E-03 TPWtr 2.06E-05 1. 04E-02 1.04E-02 1.04E-02 1.04E-02 1 .05E-02 0.OOE+00 1. 04E-02 TFWFSp 1.35E-03 4. 99E-03 4. 83E-03 4.77E-03 4.74E-03 1 .42E-02 0.OOE+00 4.89E-03 CPWtr 6.26E-05 2. OOE-02 2. OOE-02 2. OOE-02 2. OOE-02 2. 01E-02 0.OOE+00 2. OOE-02 CFWFSp 1.75E-03 4 .16E-03 4. 06E-03 3. 95E-03 3. 92E-03 7.29E-03 0. OOE+00 4 .12E-03 IPWtr 5.13E-05 1. 96E-02 1.96E-02 1 . 96E-02 1 . 96E-02 1. 97E-02 0. OOE+00 1. 96E-02 PERIOD DOSE BY AGEGROUP, ORGAN (mrem) =------

Agegroup Bone Liver Thyroid Kidney Lung GI-Lli Skin TB ADULT 1.30E-03 2.12E-02 2.10E-02 2.25E-02 2.09E-02 3. 43E-02 0.OOE+00 2.11E-02 TEEN 1.37E-03 1.54E-02 1.53E-02 1.52E-02 1.52E-02 2.4 6E-02 0.OOE+00 1.53E-02 CHILD 1.82E-03 2.42E-02 2.41E-02 2.40E-02 2.39E-02 2. 73E-02 0.OOE+00 2.41E-02 INFANT 5.13E-05 1.96E-02 1.96E-02 1.96E-02 1.96E-02 1 . 97E-02 0.OOE+00 1.96E-02 E-1.25

Table 3.2-1 (cont.)

LIQUID RELEASE AND DOSE

SUMMARY

REPORT

(PERIOD BASIS - BY UNIT)

Release ID .............. : All Liquid Release Types Period Start Date ..... : 01/01/2012 00:00 Period End Date ....... : 01/01/2013 00:00 Period Duration (mins): 5.270E+05 Unit .................... 2 Receptor ................ 0 Liquid Receptor MAXIMUM PERIOD DOSE TO LIMIT (Any Organ)

Dose Age Dose Limit Admin Admin % T. Spec T.Spec %

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End ADULT GILLI 3.43E-02 31-day 1. 50E-01 2.28E+01 2. OOE-01 1.71E+01 Qrtr->End ADULT GILLI 3. 43E-02 Quarter 3. 75E+00 9. 14E-01 5. OOE+00 6.85E-01 Year->End ADULT GILLI 3.43E-02 Annual 7. 50E+00 4. 57E-01 1.00E+01 3.43E-01 Critical Pathway ....... 1 Fresh Water Fish - Sport (FFSP)

Major Contributors ..... 0.0 % or greater to total Nuclide Percentage H-3 6.10E+01 CR-51 1.30E+01 MN-54 1.35E-01 FE-59 1.89E-01 CO-58 6.30E-01 CO-60 1.21E+00 NI-63 3.85E-02 SR-91 7.44E-04 ZR-95 2.26E-03 NB-95 1.92E+01 AG-11OM 3.97E-03 TE-125M 4.32E+00 TE-129M 1.50E-01 TE-132 6.04E-02 1-132 2.49E-06 W-187 2.83E-02

==- MAXIMUM PERIOD DOSE TO LIMIT (Tot Body))---------------

Dose Age Dose Limit Admin Admin % T. Spec T.Spec %

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End CHILD TBODY 2.41E-0 2 31-day 4.50E-02 5.36E+01 6. OOE-02 4.02E+01 Qrtr->End CHILD TBODY 2.41E-0 2 Quarter 1.13E+00 2.15E+00 1 . 50E+00 1. 61E+00 Year->End CHILD TBODY 2.41E-0 2 Annual 2.25E+00 1.07E+00 3. OOE+00 8. 04E-01 Critical Pathway ........ :.0 Potable Water (PWtr)

Major Contributors ...... :.0.0 % or greater to total Nuclide Percentage H-3 9.90E+01 CR-51 8.16E-02 E-1.26

Table 3.2-1 (cont.)

LIQUID RELEASE AND DOSE

SUMMARY

REPORT

(PERIOD BASIS - BY UNIT)

Release ID .............. I All Liquid Release Types Period Start Date ....... 01/01/2012 00:00 Period End Date ........ D01/01/2013 00:00 Period Duration (mins): 5.270E+05 Major Contributors ....... 0.0 % or greater to total Nuclide Percentage MN-54 1.29E-02 FE-59 3.54E-02 CO-58 1.12E-01 CO-60 2.30E-01 NI-63 1.79E-01 SR-91 1.26E-05 ZR-95 1.12E-06 NB-95 2.67E-03 AG-110M 1.38E-05 TE-125M 2.88E-01 TE-129M 9.20E-03 TE-132 1.99E-03 1-132 8.83E-06 W-187 5.35E-05 E-1.27

Table 3-3.1 Braidwood Nuclear Station Unit I 10 CFR 20 Compliance Assessment Period of Assessment: 1/1/12 through 12/31/12 Calculated 5/9/13 10 CFR 20.1301(a)(1) Compliance Total Effective Dose Equivalent (TEDE) mrem/year 1.45 E+00 10 CFR 20.1301(a)(1) limit mrem/year 100.00

% of limit 1.45 Compliance Summary 1 st Qtr 2nd Qtr 3 rd Qtr 4th Qtr Total TEDE (mrem) 3.72E-01 2.91E-01 3.85E-01 3.97E-01 1.45 E+00 E-1.28

Table 3-3.1 (cont.)

Braidwood Nuclear Station Unit 2 10 CFR 20 Compliance Assessment Period of Assessment: 1/1/12 through 12/31/12 Calculated 5/9/13 10 CFR 20.1301 (a)(]1) Compliance Total Effective Dose Equivalent (TEDE) mrem/year 1.50E+00 10 CFR 20.1301(a)(1) limit mrem/year 100.00

% of limit 1.50 Compliance Summary 1 st Qtr 2 nd Qtr 3rd Qtr 4 th Qtr Total TEDE (mrem) 3.69E-01 4.13E-01 4.07E-01 3.12E-01 1.50E+00 E-1.29

Table 3.4-1 Doses Resultinq from Airborne Releases The following are the maximum annual calculated cumulative offsite doses resulting from Braidwood Station airborne releases.

Unit 1:

Dose Maximum Value Sector Affected gamma air (I) 8.520 x 10.6 mrad North beta air (2) 2.050 x 10.6 mrad North whole body (3) 3.102 x 10"1 mrem North skin (4) 1.400 x 10-6 mrem North organ (6)(child-bone) 1.320 x 10+" mrem North Unit I Comoliance Status 10 CFR 50 Appendix I Yearly Objective % of Appendix I gamma air 10.0 mrad 0.00 beta air 20.0 mrad 0.00 whole body 5.0 mrem 6.20 skin 15.0 mrem 0.00 organ 15.0 mrem 8.80 Unit 2:

Dose Maximum Value Sector Affected gamma air (1) 8.520 x 10-6 mrad North beta air (2) 2.050 x 10.r mrad North whole body (3) 3.644 x 10-1 mrem North skin (4) 1.400 x 10"6 mrem North organ (6)(child-bone) 1.329 x 10*0 mrem North Unit 2 Compliance Status 10 CFR 50 Appendix I Yearly Objective % of Appendix I gamma air 10.0 mrad 0.00 beta air 20.0 mrad 0.00 whole body 5.0 mrem 7.29 skin 15.0 mrem 0.00 organ 15.0 mrem 8.86 (1) Gamma Air Dose - GASPAR II, NUREG-0597 (2) Beta Air Dose - GASPAR II, NUREG-0597 (3) Whole Body Dose - GASPAR II, NUREG-0597 (4) Skin Dose - GASPAR II, NUREG-0597 (5) Inhalation and Food Pathways Dose - GASPAR II, NUREG-0597 E- 1.30

Intentionally left blank APPENDIX F METEOROLOGICAL

Intentionally left blank Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Extremely Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 0 0 0 0 N 0 0 0 2 0 0 0 NNE 0 0 2 2 0 0 0 NE 0 0 2 2 0 0 0 ENE 0 4 6 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 1 1 6 0 0 0 SE 0 0 6 SSE 0 0 9 2 0 0 11 S 0 0 8 4 1 0 13 SSW 0 0 7 6 3 0 16 SW 0 0 0 3 0 0 3 WSW 0 0 7 0 0 0 7 W 0 0 3 0 0 0 3 WNW 0 8 27 5 0 0 40 NW 0 4 14 0 0 0 18 NNW 0 2 5 3 0 0 10 Variable 0 0 0 0 0 0 0 Total 0 19 92 23 4 0 138 Hours of calm in this stability class: 0 Hours of missing wind measurements in this st ability class: 1 Hours of missing stability measurements in al I stability cl asses : 3 F-I

Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Moderately Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 3 2 0 0 0 5 ENE 0 3 3 0 0 0 6 E 0 1 0 0 0 0 1 ESE 0 4 0 0 0 0 4 SE 0 0 2 0 0 0 2 SSE 0 3 2 1 0 0 6 S 0 1 4 0 0 6 SSW 0 2 3 2 6 2 15 SW 0 0 3 5 3 0 11 WSW 0 1 6 2 1 0 10 W 0 3 3 2 0 0 8 WNW 0 7 6 1 0 0 14 NW 0 4 4 3 0 0 11 NNW 0 1 4 2 0 0 7 Variable 0 0 0 0 0 0 0 Total 0 33 43 19 10 2 107 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-2

Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Slightly Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 NNE 1 NE 2 ENE 4 E 5 ESE 3 SE 2 SSE 4 S 7 SSW 11 SW 15 WSW 10 W 16 WNW 14 NW 9 NNW 13 Variable 0 Total 1 45 42 27 3 2 120 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-3

Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Neutral - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Win id Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 14 9 2 0 0 28 NNE 5 19 9 0 0 0 33 NE 14 35 31 2 0 0 82 ENE 10 51 18 0 0 0 79 E 6 11 0 0 0 0 17 ESE 1 13 5 0 0 0 19 SE 0 12 28 4 0 0 44 SSE 1 13 39 13 0 0 66 S 0 14 56 22 0 0 92 SSW 0 0 10 24 10 6 50 SW 1 7 44 18 4 2 76 WSW 2 30 37 8 0 0 77 W 4 28 52 39 5 0 128 WNW 10 21 55 39 6 0 131 NW 5 21 23 1 0 0 50 NNW 5 24 23 17 0 0 69 Variable 0 0 0 0 0 0 0 Total 67 313 439 189 25 8 1041 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-4

Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Slightly Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 0 0 0 0 N 5 0 5 0 0 0 0 NNE 4 4 8 0 0 0 0 NE 8 5 13 0 0 0 0 ENE 10 6 16 0 0 0 0 E 13 4 17 5 0 0 0 ESE 12 12 29 6 0 0 0 SE 8 25 39 25 0 0 0 SSE 1 18 44 S 0 15 55 8 0 0 78 SSW 1 5 34 16 10 0 66 SW 2 5 37 7 0 0 51 WSW 5 33 9 1 0 0 48 W 5 33 2 1 0 0 41 WNW 21 23 1 0 0 0 45 NW 8 15 2 0 0 0 25 NNW 7 5 0 0 0 0 12 Variable 1 0 0 0 0 0 1 Total ill 208 176 33 10 0 538 Hours of calm in this stability class: 8 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-5

Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Moderately Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 0 4 NNE 7 0 7 NE 7 0 7 ENE 12 1 13 E 8 0 8 ESE 10 1 11 SE 3 6 10 SSE 4 1 5 S 1 2 3 SSW 1 3 4 SW 4 2 8 WSW 4 22 26 W 18 20 38 WNW 12 8 20 NW 11 0 11 NNW 4 0 4 Variable 0 0 0 Total 110 66 0 179 Hours of calm in this stability class: 5 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-6

Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Extremely Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 0 0 0 0 N 0 0 0 0 0 0 0 NNE 3 0 3 0 0 0 0 NE 3 0 3 0 0 0 0 ENE 1 0 1 0 0 0 0 E 3 0 3 0 0 0 0 ESE 2 0 2 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 1 0 1 0 0 0 0 S 0 0 0 0 0 0 0 SSW 4 2 6 0 0 0 0 SW 3 2 5 0 0 0 0 WSW 1 4 5 0 0 0 0 W 2 2 4 0 0 0 0 WNW 3 0 3 0 0 0 0 NW 3 0 3 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 1 0 1 Total 30 10 0 0 0 0 40 Hours of calm in this stability class: 3 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes: 3 F-7

Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 1 1 0 0 2 NE 0 0 0 0 0 0 0 ENE 0 0 7 2 0 0 9 E 0 0 0 0 0 0 0 ESE 0 0 1 0 0 0 1 SE 0 0 1 6 0 0 7 SSE 0 0 3 9 3 0 15 S 0 0 5 3 2 3 13 SSW 0 0 1 4 4 3 12 SW 0 0 1 2 0 4 WSW 0 0 2 3 0 0 5 W 0 0 2 0 0 0 2 WNW 0 1 13 19 6 3 42 NW 0 0 6 10 4 0 20 NNW 0 0 3 1 3 0 7 Variable 0 0 0 0 0 0 0 Total 0 1 46 59 24 9 139 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-8

Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Moderately Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 NNE 0 0 0 NE 0 4 ENE 2 0 6 E 0 0 3 ESE 0 0 3 SE 2 0 2 SSE 2 1 8 S 4 3 10 SSW 1 6 11 SW 0 4 9 WSW 0 1 5 4 1 1 12 W 0 0 4 1 2 0 7 WNW 0 5 3 4 2 1 15 NW 0 0 5 1 5 0 11 NNW 0 0 1 4 0 0 5 Variable 0 0 0 0 0 0 0 Total 0 10 41 26 14 16 107 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-9

Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Slightly Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 1 1 0 0 3 NNE 0 0 2 0 0 0 2 NE 0 1 1 0 0 0 2 ENE 0 2 1 1 0 0 4 E 0 4 1 0 0 0 5 ESE 0 3 0 0 0 0 3 SE 0 0 1 0 1 0 2 SSE 0 0 1 4 1 0 6 S 0 2 0 3 1 1 7 SSW 0 2 3 2 5 2 14 SW 0 0 6 0 2 3 11 WSW 0 1 7 2 3 0 13 W 0 2 4 0 4 2 12 WNW 0 1 2 7 2 2 14 NW 0 2 2 4 2 1 11 NNW 0 2 6 0 3 0 11 Variable 0 0 0 0 0 0 0 Total 0 23 38 24 24 11 120 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabili ty class: 0 Hours of missing stability measurements in all sta bility cl asses: 3 F-I0

Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Neutral - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 10 15 2 2 0 29 NNE 11 8 8 0 0 28 NE 17 26 25 3 0 72 ENE 18 39 27 0 0 85 E 8 15 1 0 0 24 ESE 2 6 8 4 0 20 SE 1 9 19 25 2 57 SSE 6 7 28 25 2 68 S 4 9 27 31 6 77 SSW 0 2 14 24 23 63 SW 6 22 37 10 4 79 WSW 12 27 23 6 7 76 W 7 22 30 38 9 109 WNW 7 15 39 39 29 132 NW 7 9 16 19 1 52 NNW 13 21 18 14 2 70 Variable 0 0 0 0 0 0 Total 13 129 252 322 240 85 1041 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-I1

Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Slightly Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 2 0 0 N 0 3 0 5 5 0 0 NNE 1 4 0 10 4 2 0 NE 0 6 0 12 7 2 0 ENE 1 4 0 14 12 2 0 E 1 7 0 22 ESE 0 2 12 10 4 0 28 SE 0 0 13 18 6 0 37 SSE 0 0 10 26 14 0 50 S 1 3 8 42 21 3 78 SSW 1 1 7 27 23 16 75 SW 0 2 12 22 10 0 46 WSW 0 6 16 17 1 0 40 W 0 4 15 16 3 0 38 WNW 4 13 19 1 0 37 NW 2 7 22 12 0 0 43 NNW 0 1 10 0 0 0 11 Variable 0 0 0 0 0 0 0 Total 7 54 168 215 83 19 546 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-12

Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Moderately Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 3 0 0 0 N 0 5 8 5 0 0 0 NNE 1 0 6 2 0 0 0 NE 0 1 3 5 1 0 0 ENE 0 3 9 5 0 0 0 E 1 3 9 ESE 0 6 1 3 0 0 10 SE 1 0 6 4 0 0 11 SSE 2 2 2 0 1 0 7 S 0 0 1 2 0 0 3 SSW 0 1 5 0 1 0 7 SW 2 8 2 0 1 0 13 WSW 1 0 2 2 0 0 5 W 0 3 13 19 0 0 35 WNW 0 5 13 17 0 0 35 NW 2 4 6 3 0 0 15 NNW 2 3 2 0 0 0 7 Variable 1 0 0 0 0 0 1 Total 13 44 73 51 3 0 184 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-13

Braidwood Generating Station Period of Record: January - March 2012 Stability Class - Extremely Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 1 1 0 0 0 0 N 2 0 1 0 0 NNE 0 0 1 1 0 0 0 NE 2 2 5 1 0 0 0 ENE 0 3 4 1 0 0 0 E 0 0 1 1 0 0 0 0 ESE 1 2 1 0 0 0 0 SE 0 1 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 2 2 0 0 0 0 SSW 0 1 1 4 0 0 0 SW 2 2 8 WSW 0 4 2 1 0 0 7 W 0 0 1 2 0 0 3 WNW 0 0 2 2 0 0 4 NW 0 0 1 0 0 0 1 NNW 1 1 0 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 7 18 13 6 0 44 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabili ty class: 0 Hours of missing stability measurements in all sta bility classes: 3 F-14

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Extremely Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 7 9 5 0 0 21 NNE 0 10 12 5 0 0 27 NE 0 9 32 1 0 0 42 ENE 0 15 4 0 0 0 19 E 0 11 8 0 0 0 19 ESE 0 8 2 0 0 0 10 SE 0 11 7 0 0 0 18 SSE 0 17 9 2 0 0 28 S 0 10 16 8 0 0 34 SSW 0 5 32 26 6 0 69 SW 0 7 8 23 0 0 38 WSW 0 10 16 3 0 0 29 W 0 12 16 4 0 0 32 WNW 0 6 8 4 0 0 18 NW 0 7 17 5 0 0 29 NNW 0 7 17 7 0 0 31 Variable 0 0 0 0 0 0 0 Total 0 152 213 93 6 0 464 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabi lity class: 0 Hours of missing stability measurements in all s tability cl asses: 1 F-15

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Moderately Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 6 NNE 4 10 NE 11 17 ENE 0 5 E 2 5 ESE 2 4 SE 2 6 SSE 1 7 S 3 8 SSW 4 11 SW 3 12 WSW 1 7 W 2 7 WNW 1 5 NW 1 5 NNW 2 8 Variable 0 0 Total 4 64 41 14 0 0 123 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 F-16

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Slightly Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 4 3 0 0 7 NNE 0 2 2 0 8 NE 0 8 0 16 ENE 0 5 0 6 E 1 4 0 5 ESE 0 2 0 3 SE 0 2 0 3 SSE 0 1 0 2 S 1 3 0 8 SSW 1 1 0 6 SW 0 2 0 4 WSW 0 2 0 7 W 1 4 0 7 WNW 0 4 0 4 NW 0 4 0 4 NNW 0 2 0 5 Variable 0 0 0 0 Total 4 50 31 8 2 0 95 Hours of calm in this stability class: 0 Hours of missing wind measurements in this st ability c lass: 0 Hours of missing stability measurements in al 1 stabili ty classes: I F-17

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Neutral - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 8 20 0 0 0 28 NNE 5 9 38 2 0 0 54 NE 6 43 49 7 0 0 105 ENE 4 56 7 0 0 0 67 E 1 15 3 0 0 0 19 ESE 2 12 7 0 0 0 21 SE 3 9 7 0 0 0 19 SSE 0 14 4 0 0 0 18 S 1 13 22 7 0 0 43 SSW 0 5 27 22 15 0 69 SW 2 11 16 19 1 0 49 WSW 0 17 10 0 1 0 28 W 2 14 4 0 2 0 22 WNW 5 16 3 1 0 0 25 NW 6 9 2 1 0 0 18 NNW 4 10 10 2 0 0 26 Variable 1 0 0 0 0 0 1 Total 42 261 229 61 19 0 612 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 F-18

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Slightly Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7 7 5 0 0 0 19 NNE 9 20 3 0 0 0 32 NE 10 10 4 3 0 0 27 ENE 15 28 0 0 0 0 43 E 22 14 1 0 0 0 37 ESE 9 27 1 0 0 0 37 SE 6 42 6 0 0 0 54 SSE 12 35 12 0 0 0 59 S 4 42 36 7 0 0 89 SSW 0 7 28 11 1 0 47 SW 2 12 5 0 0 0 19 WSW 2 17 2 0 0 0 21 W 9 14 4 0 0 0 27 WNW 11 17 1 0 0 0 29 NW 6 13 1 0 0 0 20 NNW 6 22 4 0 0 0 32 Variable 0 0 0 0 0 0 0 Total 130 327 113 21 1 0 592 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 F- 19

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Moderately Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 6 0 6 NNE 9 0 9 NE 7 0 7 ENE 11 0 11 E 20 1 21 ESE 19 1i 30 SE 7 14 21 SSE 2 9 11 S 2 5 7 SSW 3 6 11 SW 6 2 9 WSW 6 12 18 W 11 3 14 WNW 14 0 14 NW 11 0 11 NNW 10 2 12 Variable 0 0 0 Total 144 65 0 212 Hours of calm in this stability class: 12 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 F-20

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Extremely Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 0 0 0 0 0 2 NNE 3 0 0 0 0 0 3 NE 5 0 0 0 0 0 5 ENE 8 1 0 0 0 0 9 E 7 0 0 0 0 0 7 ESE 4 0 0 0 0 0 4 SE 2 1 0 0 0 0 3 SSE 2 0 0 0 0 0 2 S 0 0 0 0 0 0 0 SSW 1 1 0 0 0 0 2 SW 1 0 0 0 0 0 1 WSW 7 0 0 0 0 0 7 W 2 0 0 0 0 0 2 WNW 3 0 0 0 0 0 3 NW 2 0 0 0 0 0 2 NNW 1 0 0 0 0 0 1 Variable 1 0 0 0 0 0 1 Total 51 3 0 0 0 0 54 Hours of calm in this stability class: 17 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: I F-21

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Extremely Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7 4 1 16 NNE 9 7 5 24 NE 12 25 1 43 ENE 7 2 0 13 E 19 7 0 28 ESE 4 4 1 11 SE 11 5 0 21 SSE 18 4 3 32 S 10 13 13 40 SSW 4 32 18 65 SW 5 11 8 27 WSW 10 13 0 31 W 4 12 2 28 WNW 5 10 1 21 NW 8 18 6 38 NNW 8 13 3 26 Variable 0 0 0 0 Total 0 64 141 180 62 17 464 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 F-22

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Moderately Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 3 1 0 0 0 5 NNE 0 1 5 2 0 0 8 NE 0 2 6 6 1 0 15 ENE 0 4 2 2 0 0 8 E 0 0 2 3 0 0 5 ESE 1 1 1 4 0 0 7 SE 0 2 2 1 0 0 5 SSE 1 1 2 1 1 0 6 S 0 0 4 3 2 1 10 SSW 0 3 2 4 1 0 10 SW 0 2 4 1 3 0 10 WSW 1 3 1 1 0 0 6 W 0 2 2 2 0 0 6 WNW 0 3 2 0 1 1 7 NW 0 2 3 0 1 0 6 NNW 0 0 5 2 2 0 9 Variable 0 0 0 0 0 0 0 Total 4 29 44 32 12 2 123 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 F-23

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Slightly Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 2 0 0 4 NNE 3 3 1 2 0 9 NE 1 9 5 0 0 15 ENE 2 2 2 0 0 6 E 2 6 0 0 0 8 ESE 0 1 2 0 0 4 SE 1 1 0 0 0 2 SSE 1 2 1 0 0 4 S 0 2 1 2 1 6 SSW 1 1 1 1 1 5 SW 3 2 0 0 0 5 WSW 0 2 2 0 1 5 W 3 2 3 0 0 8 WNW 1 4 0 0 0 5 NW 1 2 0 0 0 3 NNW 3 0 2 1 0 6 Variable 0 0 0 0 0 0 Total 1 22 41 22 6 3 95 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 F-24

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Neutral - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 12 15 1 0 32 NNE 8 18 1 0 31 NE 20 66 11 0 107 ENE 49 15 0 0 75 E 9 14 1 0 24 ESE 8 15 1 0 26 SE 6 5 1 0 17 SSE 11 5 2 0 18 S 10 20 6 6 44 SSW 7 30 14 20 76 SW 13 17 7 1 42 WSW 10 6 0 1 26 W 11 3 2 2 24 WNW 13 2 2 2 23 NW 8 3 0 0 20 NNW 6 10 2 0 26 Variable 0 0 0 0 1 Total 16 68 201 244 51 32 612 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes: 1 F-25

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Slightly Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 14 10 0 0 26 NNE 0 5 6 3 0 0 14 NE 0 3 29 8 3 0 43 ENE 1 5 27 1 0 0 34 E 1 5 25 5 1 0 37 ESE 0 4 13 22 0 0 39 SE 0 1 23 31 2 0 57 SSE 0 10 14 34 3 0 61 S 1 6 11 63 13 2 96 SSW 0 1 4 27 10 2 44 SW 0 4 11 4 0 0 19 WSW 0 3 11 7 0 0 21 W 0 2 10 4 0 0 16 WNW 0 0 27 6 1 0 34 NW 0 3 11 8 1 0 23 NNW 0 6 13 10 0 0 29 Variable 0 0 0 0 0 0 0 Total 3 60 249 243 34 4 593 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabi lity class: 0 Hours of missing stability measurements in all s tability cl asses: 1 F-26

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Moderately Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 10 1 0 0 12 NNE 1 3 7 0 0 0 11 NE 0 1 6 0 0 0 7 ENE 0 5 11 0 0 0 16 E 0 5 8 3 0 0 16 ESE 0 0 7 9 0 0 16 SE 0 2 17 14 0 0 33 SSE 0 3 7 6 0 0 16 S 1 3 4 4 0 0 12 SSW 0 2 2 5 0 0 9 SW 0 4 5 2 1 0 12 WSW 0 2 6 4 0 0 12 W 0 2 10 0 0 0 12 WNW 1 1 8 2 0 0 12 NW 0 1 18 0 0 0 19 NNW 0 0 9 0 0 0 9 Variable 0 0 0 0 0 0 0 Total 3 35 135 50 1 0 224 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 F-27

Braidwood Generating Station Period of Record: April - June 2012 Stability Class - Extremely Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 4 26 35 6 0 0 71 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: I F-28

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Extremely Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 10 18 NNE 2 7 9 NE 9 20 29 ENE 2 0 3 E 3 0 3 ESE 10 1 11 SE 16 4 20 SSE 25 5 30 S 34 7 41 SSW 15 21 44 SW 8 19 34 WSW 20 11 31 W 34 17 51 WNW 11 9 20 NW 14 12 27 NNW 18 22 40 Variable 1 0 2 Total 2 226 165 20 0 0 413 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabili ty class: 0 Hours of missing stability measurements in all sta bility cl asses: 3 F-29

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Moderately Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 5 1 0 0 8 NNE 0 8 3 0 0 0 NE 0 3 2 0 0 0 5 ENE 0 3 0 0 0 0 3 E 0 3 0 0 0 0 3 ESE 1 11 0 0 0 0 12 SE 0 6 0 0 0 0 6 SSE 1 8 1 0 0 0 10 S 0 9 2 0 0 0 11 SSW 0 4 4 1 1 0 10 SW 0 6 1 1 0 0 8 WSW 0 8 2 0 0 0 10 W 2 8 4 0 0 0 14 WNW 0 4 0 0 0 0 4 NW 0 7 0 0 0 0 7 NNW 0 7 6 0 0 0 13 Variable 1 0 0 0 0 0 1 Total 5 97 30 3 1 0 136 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabili ty class: 0 Hours of missing stability measurements in all sta bility cl.asses: 3 F-30

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Slightly Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 4 0 0 0 N 1 10 15 3 0 0 0 NNE 1 7 11 5 0 0 0 NE 1 7 13 2 0 0 0 ENE 2 2 6 0 0 0 0 E 1 0 1 0 0 0 0 ESE 1 4 5 0 0 0 0 SE 2 1 3 1 0 0 0 0 SSE 6 7 S 2 5 1 0 0 0 8 SSW 2 6 5 2 0 0 15 SW 1 4 5 1 0 0 11 WSW 0 1 5 0 0 0 6 W 0 7 3 0 0 0 10 WNW 3 4 0 0 0 0 7 NW 1 3 0 0 0 0 4 NNW 1 6 6 0 0 0 13 Variable 0 0 0 0 0 0 0 Total 20 73 39 3 0 0 135 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-31

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Neutral - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Win d Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 5 23 22 0 0 50 NNE 4 31 11 0 0 46 NE 9 33 9 0 0 51 ENE 10 25 3 0 0 38 E 14 12 0 0 0 26 ESE 7 13 0 0 0 20 SE 4 4 3 0 0 11 SSE 2 11 3 0 0 16 S 1 13 6 2 1 23 SSW 0 8 12 3 1 24 SW 0 20 21 3 0 44 WSW 2 16 4 0 0 22 W 3 8 6 0 0 17 WNW 7 5 3 0 0 15 NW 6 7 1 0 0 14 NNW 3 31 19 0 0 53 Variable 0 0 0 0 0 0 Total 77 260 123 8 2 470 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-32

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Slightly Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4 -7 8-12 13-18 19-24 > 24 Total N 6 7 0 1 0 0 14 NNE 14 25 3 0 0 0 42 NE 11 14 0 0 0 0 25 ENE 23 12 0 0 0 0 35 E 21 4 0 0 0 0 25 ESE 23 11 0 0 0 0 34 SE 8 37 1 0 0 0 46 SSE 16 50 2 0 0 0 68 S 3 62 23 3 0 0 91 SSW 2 25 24 0 0 0 51 SW 3 21 16 0 0 0 40 WSW 7 20 2 0 0 0 29 W 9 8 1 0 0 0 18 WNW 13 6 0 0 0 0 19 NW 14 4 0 0 0 0 18 NNW 8 14 1 0 0 0 23 Variable 1 0 0 0 0 0 1 Total 182 320 73 4 0 0 579 Hours of calm in this stability class: 2 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-33

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Moderately Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 1 0 0 0 0 2 NNE 7 6 0 0 0 0 13 NE 3 1 0 0 0 0 4 ENE 10 1 0 0 0 0 11 E 24 3 0 0 0 0 27 ESE 27 1 0 0 0 0 28 SE 9 10 0 0 0 0 19 SSE 7 2 0 0 0 0 9 S 7 3 0 0 0 0 10 SSW 7 9 1 0 0 0 17 SW 6 9 0 0 0 0 15 WSW 23 8 0 0 0 0 31 W 37 2 0 0 0 0 39 WNW 30 1 0 0 0 0 31 NW 7 0 0 0 0 0 7 NNW 3 0 0 0 0 0 3 Variable 2 0 0 0 0 0 2 Total 210 57 1 0 0 268 Hours of calm in this stability class: 23 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-34

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Extremely Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 0 0 0 0 N 3 0 3 0 0 0 0 NNE 2 1 3 0 0 0 0 NE 4 0 4 0 0 0 0 ENE 14 0 14 0 0 0 0 E 6 0 6 0 0 0 0 ESE 4 0 4 0 0 0 0 SE 4 0 4 0 0 0 0 SSE 3 0 3 0 0 0 0 S 2 0 2 0 0 0 0 SSW 4 0 4 0 0 0 0 SW 8 1 9 0 0 0 0 WSW 13 6 19 0 0 0 0 W 13 1 14 0 0 0 0 WNW 11 0 11 0 0 0 0 NW 3 0 3 0 0 0 0 NNW 7 0 7 0 0 0 0 Variable 0 0 0 Total 101 q 0 n 0 0 110 Hours of calm in this stability class: 69 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-35

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Extremely Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 6 7 15 NNE 2 2 1 5 NE 5 10 13 28 ENE 1 5 0 6 E 3 1 0 5 ESE 4 10 0 14 SE 7 13 1 21 SSE 14 21 2 37 S 16 14 5 37 SSW 8 17 10 39 SW 3 11 15 32 WSW 9 10 6 25 W 6 34 10 50 WNW 10 12 8 30 NW 8 11 11 35 NNW 5 18 9 32 Variable 1 0 0 2 Total 2 104 195 98 12 2 413 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-36

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Moderately Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 5 2 0 0 N 0 7 2 2 0 0 NNE 2 6 2 4 0 0 NE 4 10 1 0 0 0 ENE 2 3 1 0 0 0 E 5 6 4 0 0 0 ESE 4 9 1 0 0 0 SE 5 6 SSE 6 3 2 0 0 11 S 5 5 1 0 1 12 SSW 2 4 1 1 0 8 SW 5 2 1 0 0 8 WSW 6 3 1 0 0 11 W 7 3 3 0 0 13 WNW 2 0 0 0 0 2 NW 3 4 0 0 0 7 NNW 6 7 2 0 0 15 Variable 0 0 0 0 0 1 Total 3 64 47 19 1 1 135 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabili ty class: 1 Hours of missing stability measurements in all sta bility classes: 3 F-37

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Slightly Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 6 4 3 0 0 13 NNE 1 5 2 1 0 9 0

NE 1 2 7 5 0 0 15 ENE 1 1 2 2 0 6 0

E 0 2 1 0 0 0 3 ESE 2 2 1 0 0 0 5 SE 0 3 1 0 0 0 4 SSE 1 2 3 0 0 0 6 S 1 3 4 0 0 0 8 SSW 0 4 6 4 1 0 15 SW 1 4 4 1 0 0 10 WSW 0 2 2 3 0 0 7 W 1 6 5 1 0 13 0

WNW 0 4 1 1 0 0 6 NW 0 3 0 0 0 0 3 NNW 1 3 5 3 0 0 12 Variable 0 0 0 0 0 0 0 Total 10 52 48 24 1 0 135 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabili ty class: 0 Hours of missing stability measurements in all sta bility cl asses: 3 F-38

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Neutral - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 12 18 14 0 0 45 NNE 3 11 15 5 0 0 34 NE 4 9 31 14 0 0 58 ENE 2 15 23 3 0 0 43 E 5 13 13 2 0 0 33 ESE 2 7 9 0 0 0 18 SE 2 2 4 5 0 0 13 SSE 0 4 10 3 0 0 17 S 0 4 8 8 0 3 23 SSW 0 2 14 12 3 2 33 SW 2 11 14 10 0 0 37 WSW 0 9 11 2 0 0 22 W 1 6 2 5 0 0 14 WNW 0 4 3 2 1 0 10 NW 1 14 6 0 0 0 21 NNW 1 8 23 16 1 0 49 Variable 0 0 0 0 0 0 0 Total 24 131 204 101 5 5 470 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabili ty class: 0 Hours of missing stability measurements in all sta bility cliasses: 3 F-39

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Slightly Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 8 0 1 0 N 1 8 18 18 2 1 0 NNE 1 2 24 NE 0 5 24 3 0 0 32 ENE 0 8 26 0 0 0 34 E 2 9 25 2 0 0 38 ESE 2 1 15 2 0 0 20 SE 1 5 29 19 0 0 54 SSE 0 I1 29 12 1 0 53 S 2 6 34 49 5 0 96 SSW 0 3 26 29 0 0 58 SW 0 5 33 17 0 0 55 WSW 0 3 16 2 0 0 21 W 1 4 12 0 1 0 18 WNW 0 3 8 1 0 0 12 NW 0 12 12 1 0 0 25 NNW 0 6 13 3 0 0 22 Variable 1 0 0 0 0 0 1 Total 11 91 328 142 9 0 581 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-40

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Moderately Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 2 0 0 0 N 2 3 7 2 4 0 0 NNE 1 3 10 6 1 0 0 NE 0 1 8 4 1 0 0 ENE 0 7 12 11 1 0 0 E 0 9 21 ESE 1 2 10 8 0 0 21 SE 0 3 16 6 0 0 25 SSE 2 7 8 0 0 0 17 S 0 6 3 1 0 0 10 SSW 1 7 8 0 0 0 16 SW 0 10 12 2 0 0 24 WSW 0 11 16 0 0 0 27 W 0 6 13 1 0 0 20 WNW 2 5 14 2 0 0 23 NW 0 6 28 0 0 0 34 NNW 1 1 11 0 0 0 13 Variable 0 0 0 0 0 0 0 Total 10 87 164 27 0 0 288 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 3 Hours of missing stability measurements in all stability classes: 3 F-41

Braidwood Generating Station Period of Record: July - September 2012 Stability Class - Extremely Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 2 2 2 0 0 9 NNE 0 7 1 1 0 0 9 NE 3 3 2 1 0 0 9 ENE 2 4 2 0 0 0 8 E 5 3 3 1 0 0 12 ESE 1 1 7 1 0 0 10 SE 1 2 1 0 0 0 4 SSE 2 6 0 0 0 0 8 S 1 4 0 0 0 0 5 SSW 5 10 4 0 0 0 19 SW 1 9 3 0 0 0 13 WSW 1 6 5 1 0 0 13 W 0 5 12 4 0 0 21 WNW 2 4 8 3 0 0 17 NW 1 5 5 0 0 0 11 NNW 1 4 4 0 0 0 9 Variable 0 0 0 0 0 0 0 Total 29 75 59 14 0 0 177 Hours of calm in this stability class: 2 Hours of missing wind measurements in this stabili ty class: 0 Hours of missing stability measurements in all sta bility classes: 3 F-42

Braidwood Generating Station Period of Record: October - December 2012 Stability Class - Extremely Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 0 0 1 0 0 0 N 1 0 0 1 0 0 0 NNE 1 0 0 3 0 0 0 NE 3 0 1 0 0 0 0 ENE 1 0 4 0 0 0 0 E 4 0 0 0 0 0 0 ESE 0 0 0 2 0 0 0 SE 2 SSE 0 0 4 1 0 0 5 S 0 0 2 0 0 0 2 SSW 0 0 1 10 1 0 12 SW 0 0 0 3 0 0 3 WSW 0 0 0 1 0 0 1 W 0 1 0 2 0 0 3 WNW 0 5 5 0 0 0 10 NW 0 4 6 0 0 0 10 NNW 0 0 4 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 0 15 29 17 1 0 62 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabi lity class: 0 Hours of missing stability measurements in all s tability cl asses: 32 F-43

Braidwood Generating Station Period of Record: October - December 2012 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 0 0 2 1 0 0 N 3 0 0 0 1 0 0 NNE 1 0 2 0 0 0 0 NE 2 0 1 0 0 0 0 1 ENE 0 1 0 0 0 0 1 E

0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 SSE 0 1 1 0 0 0 2 S 0 0 0 1 0 0 1 SSW 0 0 4 0 0 0 4 SW 0 0 0 4 0 0 4 WSW 0 0 0 0 0 0 0 W 0 4 1 2 0 0 7 WNW 0 2 2 0 0 0 4 NW 0 4 2 0 0 0 6 NNW 0 0 2 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 0 15 14 q 0 0 38 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 32 F-44

Braidwood Generating Station Period of Record: October December 2012 Stability Class - Slightly Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 1 26 24 17 3 0 71 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 32 F-45

Braidwood Generating Station Period of Record: October - December 2012 Stability Class - Neutral - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 28 27 3 65 NNE 29 20 7 59 NE 23 11 1 42 ENE 7 0 0 18 E 16 0 0 21 ESE 8 0 0 10 SE 26 9 1 37 SSE 49 24 8 82 S 14 58 28 109 SSW 10 20 32 78 SW 17 23 16 60 WSW 19 11 1 34 W 38 22 5 67 WNW 52 39 6 112 NW 27 24 5 60 NNW 40 26 13 86 Variable 0 0 0 0 Total 68 403 314 126 28 1 940 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 21 Hours of missing stability measurements in all stability cl,asses: 32 F-46

Braidwood Generating Station Period of Record: October December 2012 Stability Class - Slightly Stable - 199Ft-3 OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7 18 15 0 40 NNE 4 28 5 0 37 NE 11 11 0 1 23 ENE 14 7 0 0 21 E 10 10 4 0 24 ESE 8 7 3 0 18 SE 5 57 14 0 76 SSE 9 63 18 0 90 S 5 47 86 23 162 SSW 3 12 35 13 69 SW 3 19 26 2 50 WSW 9 22 4 0 35 W 24 37 5 2 68 WNW 18 18 2 6 44 NW 11 11 1 2 25 NNW 8 45 10 2 65 Variable 0 0 0 0 0 Total 149 412 228 51 0 847 Hours of calm in this stability class: 2 Hours of missing wind measurements in this stability class: 4 Hours of missing stability measurements in all stability classes: 32 F-47

Braidwood Generating Station Period of Record: October - December 2012 Stability Class - Moderately Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 0 2 0 0 0 0 N 2 0 0 0 0 0 0 NNE 0 2 0 0 0 0 0 NE 2 7 0 0 0 0 0 ENE 7 18 0 0 0 0 0 E 18 ESE 17 8 0 0 0 0 25 SE 3 9 0 0 0 0 12 SSE 8 5 0 0 0 0 13 S 1 1 0 0 0 0 2 SSW 2 5 2 0 0 0 9 SW 3 0 0 0 0 0 3 WSW 2 4 0 0 0 0 6 W 1 8 0 0 0 0 9 WNW 6 5 0 0 0 0 11 NW 6 0 0 0 0 0 6 NNW 5 2 0 0 0 0 7 Variable 0 0 0 0 0 0 0 Total 81 49 2 0 0 0 132 Hours of calm in this stability class: 7 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 32 F-48

Braidwood Generating Station Period of Record: October - Decembc?r 2012 Stability Class - Extremely Stable - 199Ft- 30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 NNE 0 NE 0 ENE 4 E 7 ESE 7 SE 0 SSE 3 S 2 SSW 2 SW 2 WSW 0 W 0 WNW 3 NW 4 NNW 1 Variable 0 Total 36 0 37 Hours of calm in this stability class: 15 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 32 F-49

Braidwood Generating Station Period of Record: October - December 2012 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 NNE 0 0 NE 0 0 ENE 0 0 E 0 1 ESE 0 0 SE 0 0 SSE 0 0 S 0 0 SSW 0 0 SW 0 0 WSW 0 0 W 0 0 WNW 0 0 NW 0 0 NNW 0 0 Variable 0 0 Total 0 1 17 24 17 3 62 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 32 F-50

Braidwood Generating Station Period of Record: October - December 2012 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4--7 8-12 13-18 19-24 > 24 Total N 0 0 1 0 1 0 2 NNE 0 0 0 1 1 0 2 NE 0 1 1 0 0 0 2 ENE 0 0 1 0 0 0 1 E 0 1 0 0 0 0 1 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 1 1 0 0 2 S 0 0 0 2 0 0 2 SSW 0 0 0 3 0 1 4 SW 0 0 0 1 2 0 3 WSW 0 0 0 0 0 0 0 W 0 0 4 0 3 0 7 WNW 0 0 2 2 0 0 4 NW 0 2 2 2 0 0 6 NNW 0 0 1 1 0 0 2 Variable 0 0 0 0 0 0 0 Total 0 4 13 13 7 1 38 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 32 F-51

Braidwood Generating Station Period of Record: October December 2012 Stability Class - Slightly Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 5 0 1 7 NNE 0 0 0 0 0 0 0 NE 0 0 2 1 0 0 3 ENE 0 3 0 0 0 0 3 E 0 1 1 0 0 0 2 ESE 0 0 1 0 0 0 1 SE 0 0 0 1 0 0 1 SSE 0 0 0 1 2 0 3 S 0 0 1 6 3 3 13 SSW 0 0 0 4 3 0 7 SW 0 1 1 2 1 0 5 WSW 0 0 1 0 1 0 2 W 0 3 6 0 0 0 9 WNW 0 3 4 1 0 0 8 NW 0 1 0 1 4 0 6 NNW 0 1 0 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 13 18 22 14 4 71 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 32 F-52

Braidwood Generating Station Period of Record: October - December 2012 Stability Class - Neutral - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 13 34 9 0 1 60 NNE 2 9 22 12 6 2 53 NE 0 7 24 12 1 2 46 ENE 3 9 5 2 0 0 19 E 1 8 9 8 0 0 26 ESE 0 6 5 3 1 0 15 SE 1 8 17 12 5 0 43 SSE 0 12 34 19 16 0 81 S 0 10 15 45 29 17 116 SSW 1 6 12 19 26 17 81 SW 1 13 16 14 4 1 49 WSW 1 6 12 8 1 1 29 W 0 4 28 17 3 2 54 WNW 1 14 39 36 7 9 106 NW 1 8 33 18 7 11 78 NNW 2 12 37 17 12 2 82 Variable 0 0 0 0 0 0 0 Total 17 145 342 251 118 65 938 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 23 Hours of missing stability measurements in all stability classes: 32 F-53

Braidwood Generating Station Period of Record: October - December 2012 Stability Class - Slightly Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 4 26 22 0 0 52 NNE 0 7 23 6 0 0 36 NE 0 5 22 0 1 0 28 ENE 0 5 9 0 0 0 14 E 0 8 15 3 4 0 30 ESE 0 7 5 1 4 0 17 SE 2 3 22 36 3 0 66 SSE 0 7 44 42 4 0 97 S 0 7 20 76 43 11 157 SSW 1 5 16 43 9 7 81 SW 3 10 24 20 1 0 58 WSW 0 8 13 5 0 0 26 W 1 6 20 9 4 0 40 WNW 1 8 32 11 1 2 55 NW 0 15 12 12 0 5 44 NNW 0 3 28 13 2 0 46 Variable 0 0 0 0 0 0 0 Total 8 108 331 299 76 25 847 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 6 Hours of missing stability measurements in all stability classes: 32 F-54

Braidwood Generating Station Period of Record: October December 2012 Stability Class - Moderately Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7 9 NNE 1 2 NE 1 3 ENE 1 4 E 5 8 ESE 10 19 SE 14 24 SSE 7 13 S 4 5 SSW 7 11 SW 3 9 WSW 2 2 W 4 5 WNW 1 11 NW 3 13 NNW 1 1 Variable 0 0 Total 3 28 71 37 0 0 139 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 32 F-55

Braidwood Generating Station Period of Record: October - December 2012 Stability Class - Extremely Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 0 0 0 1 NNE 0 1 0 0 0 0 1 NE 1 1 0 0 0 0 2 ENE 0 0 0 0 0 0 0 E 1 0 1 0 0 0 2 ESE 1 0 0 0 0 0 1 SE 0 1 3 1 0 0 5 SSE 0 4 0 1 0 0 5 S 1 6 1 0 0 0 8 SSW 4 7 1 0 0 0 12 SW 0 6 1 0 0 0 7 WSW 1 2 0 0 0 0 3 W 1 0 1 0 0 0 2 WNW 0 2 0 0 0 0 2 NW 0 0 0 0 0 0 0 NNW 0 0 1 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 10 30 10 2 0 0 52 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 32 F-56

APPENDIX G ANNUAL RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM REPORT (ARGPPR)

Intentionally left blank Docket No: 50-456 50-457 BRAIDWOOD STATION UNITS 1 and 2 Annual Radiological Groundwater Protection Program Report 1 January through 31 December 2012 Prepared By Teledyne Brown Engineering Environmental Services

,""w Exelon GenerationA Braidwood Station Braceville, IL 60407 May 2013

Intentionally left blank Table Of Contents I. Sum m ary and Conclusions .............................................................................................. 1 II. Introduction ............................................................................................................. 3 A. O bjectives of the RG PP .................................................................................. 3 B. Im plem entation of the O bjectives .................................................................. 3 C. Program Description ....................................................................................... 4 D. Characteristics of Tritium (H-3) ...................................................................... 4 Ill. Program Description ................................................................................................ 5 A. Sam ple Analysis ............................................................................................ 5 B. Data Interpretation .......................................................................................... 6 C. Background Analysis ..................................................................................... 6

1. Background Concentrations of Tritium ................................................. 7 IV. Results and Discussion ............................................................................................ 9 A, Miss e d S a m p le s .................................................................................................. 9 B, G roundwater Results ..................................................................................... 10 C. Surface Water Results ................................................................................ 11 D. Drinking Water Well Survey .............................................................................. 11 E, Summary of Results - Inter-laboratory Comparison Program .......................... 11 F. Leaks, Spills, and Releases ......................................................................... 11 G . Trends .......................................................................................................... 12 H. Investigations ................................................................................................ 12 I. Actions Taken ................................................................................................ 12

Appendices Appendix A Location Designation Tables Table A-1 Radiological Groundwater Protection Program - Sampling Locations, Braidwood Station, 2012 Figures Figure A-1 Sampling Locations near the Site Boundary of the Braidwood Station, 2012 Figure A-2 Intermediate Sampling Locations of the Braidwood Station, 2012 Figure A-3 Distant Sampling Locations of the Braidwood Station, 2012 Appendix B Data Tables Tables Table B-1.1 Concentrations of Tritium, Strontium, Gross Alpha and Gross Beta in Groundwater Samples Collected in the Vicinity of Braidwood Station, 2012.

Table B-I.2 Concentrations of Gamma Emitters in Groundwater Samples Collected in the Vicinity of Braidwood Station, 2012.

Table B-1.3 Concentrations of Hard-To-Detects in Groundwater Samples Collected in the Vicinity of Braidwood Station, 2012.

Table B-I1.1 Concentrations of Tritium, Strontium, Gross Alpha and Gross Beta in Surface Water Samples Collected in the Vicinity of Braidwood Station, 2012.

Table B-11.2 Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Braidwood Station, 2012.

ii

I. Summary and Conclusions In 2012, Exelon continued a comprehensive program that evaluates the impact of station operations on groundwater and surface water in the vicinity of Braidwood Station. This evaluation involved numerous station personnel and contractor support personnel. This report covers groundwater and surface water samples collected from the environment, both on and off station property, in 2012. During that time period, 589 analyses were performed on 353 samples from 166 locations.

In assessing all the data gathered for this report, it was concluded that the operation of Braidwood Station had no adverse radiological impact on the environment.

Gamma-emitting radionuclides associated with licensed plant operations were not detected at concentrations greater than their respective Lower Limits of Detection (LLDs) as specified in the Offsite Dose Calculation Manual (ODCM) in any of the groundwater or surface water samples. In the case of tritium, Exelon specified that its laboratories achieve a lower limit of detection 10 times less than Braidwood's ODCM and 100 times less than federal regulation.

Strontium-89/90 was not detected at a concentration greater than the LLD of 1.0 picoCuries per liter (pCi/L) in any of the groundwater or surface water samples tested.

No tritium was detected in the groundwater or surface water samples at concentrations greater than the United States Environmental Protection Agency (USEPA) drinking water standard (and the Nuclear Regulatory Commission Reporting Limit) of 20,000 pCi/L. Low levels of tritium were detected in groundwater and surface water at concentrations greater than the LLD of 200 pCi/L in 96 of 354 analyses. The tritium concentrations ranged from 180 +/- 119 pCi/L to 3,820 +/- 431 pCi/L. The tritium that was detected in the groundwater is believed to be the result of isolated historical releases and/or background from external sources greater than 200 pCi/L.

Gross Alpha and Gross Beta analyses in the dissolved and suspended fractions were performed on groundwater and surface water samples during the 4 th quarter of the sampling year in 2012. Gross Alpha (dissolved) was detected in six groundwater and surface water samples. The concentrations ranged from 0.7 to 19.5 pCi/L. Gross Alpha (suspended) was detected in 5 groundwater and surface water samples. The concentrations ranged from 1.0 to 7.3 pCi/L. Gross Beta (dissolved) was detected in 32 groundwater and surface water samples.

The concentrations ranged from 1.7 to 57.9 pCi/L. Gross Beta (suspended) was detected in 7 groundwater and surface water samples. The concentrations ranged from 1.7 to 12.3 pCi/L.

Hard-To-Detect analyses were performed on two groundwater samples to establish background levels. The analyses included Fe-55, Ni-63, Am-241, Cm-242, Cm-243/244, Pu-238, Pu-239/240, U-234, U-235 and U-238. All hard-to-detect nuclides were not detected at concentrations greater than their respective MDCs.

II. Introduction Braidwood Station, a two-unit PWR station is located in Will County, Illinois, fifteen (15) miles south-southwest of Joliet, Illinois. Each reactor is designed to have a capacity of 3587 thermal megawatts. Units No. 1 went critical on May 29, 1987 and Unit No. 2 went critical on March 8, 1988. The station has been designed to keep releases to the environment at levels below those specified in the regulations.

This report covers those analyses performed by Teledyne Brown Engineering (TBE) and Environmental Inc. Midwest Labs (EIML) on samples collected in 2012.

A. Objective of the RGPP The long-term objectives of the RGPP are as follows:

1. Identify suitable locations to monitor and evaluate potential impacts from station operations to preclude radiological impact to the environment and potential drinking water sources.

2. Understand the local hydrogeologic regime in the vicinity of the station and maintain up-to-date knowledge of flow patterns on the surface and shallow subsurface.

3. Perform routine water sampling and radiological analysis of water from selected locations.

4. Report new leaks, spills, or other detections with potential radiological significance to stakeholders in a timely manner.

5. Regularly assess analytical results to identify adverse trends.

6. Take necessary corrective actions to protect groundwater resources.

B. Implementation of the Objectives The objectives identified have been implemented at Braidwood Station as discussed below:

1. Exelon identified locations to monitor and evaluated potential impacts from station operations.

2. The Braidwood Station reports describe the local hydrogeologic regime. Periodically, the flow patterns on the surface and shallow subsurface are updated based on ongoing measurements.

3. Braidwood Station will continue to perform routine sampling and radiological analysis of water from selected locations.

4. Braidwood Station has implemented procedures to identify and report new leaks, spills, or other detections with potential radiological significance in a timely manner.

5. Braidwood Station staff and consulting hydrogeologist assess analytical results on an ongoing basis to identify adverse trends.

C. Program Description

1. Sample Collection Sample locations can be found in Table A-1 and Figures A-1 through A-3, Appendix A.

Groundwater and Surface Water Samples of groundwater and surface water are collected, managed, transported and analyzed in accordance with EPA methods. Sample locations, sample collection frequencies and analytical frequencies are managed in accordance with approved station procedures. Contractor and/or station personnel are trained in the collection, preservation management and shipment of samples as well as in documentation of sampling events.

Analytical laboratories are subject to internal quality assurance programs, industry cross-check programs as well as nuclear industry audits. Station personnel review and evaluate all analytical data as it is received. Additionally, analytical data results are reviewed by an independent hydrogeologist for adverse trends or changes to hydrogeologic conditions.

D. Characteristics of Tritium (H-3)

Tritium is a radioactive isotope of hydrogen. Its chemical properties are the same as hydrogen. Tritiated water behaves the same as ordinary water in both the environment and the body. Tritiated water can be taken into the body by drinking water, breathing air, eating food or absorption through the skin. Once tritiated water enters the body, it disperses quickly and is uniformly distributed. Tritiated water is excreted primarily through urine with a clearance rate characterized by an effective biological half-life of about 14 days. With such a short biological half-life, an acute ingestion would be cleared rapidly. Organically bound tritium (tritium that is incorporated into carbon containing compounds) can remain in the body for a longer period.

Tritium is produced naturally in the upper atmosphere when cosmic rays interact with air molecules. Tritium is also produced during nuclear weapons explosions, as a by-product in reactors producing electricity and in special production reactors. Like normal water, tritiated water is colorless and odorless. Tritiated water behaves chemically and physically like non-tritiated water in the subsurface and therefore tritiated water will travel at the same velocity as non tritiated groundwater.

Ill. Program Description A. Sample Analysis This section describes the general analytical methodologies used by Teledyne Brown Engineering (TBE) and Environmental Incorporated Midwest Laboratory (EIML) to analyze the environmental samples for radioactivity for the Braidwood Station RGPP in 2012.

In order to achieve the stated objectives, the current program includes the following analyses:

1. Concentrations of gamma emitters in groundwater and surface water.

2. Concentrations of strontium in groundwater and surface water.

3. Concentrations of tritium in groundwater and surface water.

4. Concentrations of Gross Alpha and Gross Beta (Dissolved and Suspended) in groundwater and surfacewater.

5. Concentrations of Am-241 in groundwater.

6. Concentrations of Cm-242 and Cm-243/244 in groundwater.

7. Concentrations of Pu-238 and Pu-239/240 in groundwater.

8. Concentrations of U-234, U-235 and U-238 in groundwater.

9. Concentrations of Fe-55 in groundwater.

10. Concentrations of Ni-63 in groundwater.

B. Data Interpretation The radiological data collected prior to Braidwood Station becoming operational were used as a baseline with which these operational data were compared. For the purpose of this report, Braidwood Station was considered operational at initial criticality. Several factors were important in the interpretation of the data:

1. Lower Limit of Detection and Minimum Detectable Concentration The lower limit of detection (LLD) is specified by federal regulation as a minimum sensitivity value that must be achieved routinely by the analytical parameter.

2. Laboratory Measurements Uncertainty The estimated uncertainty in measurement of tritium in environmental samples is frequently on the order of 50% of the measurement value.

Statistically, the exact value of a measurement is expressed as a range with a stated level of confidence. The convention is to report results with a 95% level of confidence. The uncertainty comes from calibration standards, sample volume or weight measurements, sampling uncertainty and other factors. Exelon reports the uncertainty of a measurement created by statistical process (counting error) as well as all sources of error (Total Propagated Uncertainty or TPU). Each result has two values calculated. Exelon reports the TPU by following the result with plus or minus (+/-) the estimated sample standard deviation, as TPU, that is obtained by propagating all sources of analytical uncertainty in measurements.

Analytical uncertainties are reported at the 95% confidence level in this report for reporting consistency with the AREOR.

Gamma spectroscopy results for each type of sample were grouped as follows:

For groundwater and surface water 14 nuclides, Be-7, K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, 1-131, Cs-134, Cs-137, Ba-140 and La-140 were reported.

C. Background Analysis A pre-operational radiological environmental monitoring program (pre-operational REMP) was conducted to establish background radioactivity levels prior to operation of the Station. The environmental media sampled and analyzed during the pre-operational REMP were atmospheric radiation, fall-out, domestic water, surface water, marine life and foodstuffs. The results of the monitoring were detailed in the report entitled, Environmental Radiological Monitoring for Braidwood Nuclear Power Station Commonwealth Edison Company, Annual Report 1986, May 1987.

At the upstream Kankakee River collection point, BD-25, monthly composites of weekly sample collections from all surface water locations indicated tritium concentrations were not detectable above the LLD

(<200 pCi/L). Monthly composites of weekly sample collections from all surface water locations indicate strontium-89, strontium-90, cesium-1 34 and cesium-1 37 concentrations were less than their specified LLDs.

Groundwater was collected from one off-site well on a quarterly basis.

Gamma isotopic, radio strontium and tritium analyses were performed on all samples. Strontium-89, strontium-90, tritium, and gamma emitters were below their respective LLDs.

1. Background Concentrations of Tritium The purpose of the following discussion is to summarize background measurements of tritium in various media performed by others.

a. Tritium Production Tritium is created in the environment from naturally occurring processes both cosmic and subterranean, as well as from anthropogenic (i.e., man-made) sources. In the upper atmosphere, "Cosmogenic" tritium is produced from the bombardment of stable nuclides and combines with oxygen to form tritiated water, which will then enter the hydrologic cycle. Below ground, "lithogenic" tritium is produced by the bombardment of natural lithium present in crystalline rocks by neutrons produced by the radioactive decay of naturally abundant uranium and thorium. Lithogenic production of tritium is usually negligible compared to other sources due to the limited abundance of lithium in rock. The lithogenic tritium is introduced directly to groundwater.

A major anthropogenic source of tritium and strontium-90 comes from the former atmospheric testing of thermonuclear weapons. Levels of tritium in precipitation increased significantly during the 1950s and early 1960s and later with additional testing, resulting in the release of significant amounts of tritium to the atmosphere. The Canadian heavy water nuclear power reactors, other commercial power reactors, nuclear research and weapons production continue to influence tritium concentrations in the environment.

b. Precipitation Data Precipitation samples are routinely collected at stations around the world for the analysis of tritium and other radionuclides. Two publicly available databases that provide tritium concentrations in precipitation are Global Network of Isotopes in Precipitation (GNIP) and USEPA's RadNet database. GNIP provides tritium precipitation concentration data for samples collected world wide from 1960 to 2012.

RadNet provides tritium precipitation concentration data for samples collected at stations through out the U.S. from 1960 up to and including 2012. Based on GNIP data for sample stations located in the U.S. Midwest, tritium concentrations peaked around 1963. This peak, which approached 10,000 pCi/L for some stations, coincided with the atmospheric testing of thermonuclear weapons. Tritium concentrations in surface water showed a sharp decline up until 1975 followed by a gradual decline since that time. Tritium concentrations in Midwest precipitation have typically been below 100 pCi/L since around 1980. Tritium concentrations in wells may still be above the 200 pCi/L detection limit from the external causes described above. Water from previous years and decades is naturally captured in groundwater, so some well water sources today are affected by the surface water from the 1960s that was elevated in tritium.

c. Surface Water Data Tritium concentrations are routinely measured in large surface water bodies, including Lake Michigan and the Mississippi River. Illinois surface water data were typically less than 100 pCi/L.

The USEPA RadNet surface water data typically has a reported 'Combined Standard Uncertainty' of 35 to 50 pCi/L.

According to USEPA, this corresponds to a +/- 70 to 100 pCi/L 95% confidence bound on each given measurement.

Therefore, the typical background data provided may be subject to measurement uncertainty of approximately +/- 70 to 100 pCi/L.

The radio-analytical laboratory is counting tritium results to an Exelon specified LLD of 200 pCi/L. Typically, the lowest positive measurement will be reported within a range of 40 -

240 pCi/L or 140 +/- 100 pCi/L. Clearly, these sample results cannot be distinguished as different from background at this concentration.

IV. Results and Discussion A. Missed Sample Exelon maintains a Radiological Groundwater Protection Program (RGPP) as part of the nuclear industry's voluntary groundwater protection initiative as described in NEI 07-07.

As part of this program, samples are obtained routinely from monitoring wells and surface waters at Braidwood based on the frequencies outlined in station procedures.

According to the Station RGPP, MW-11, MW-13, MW-144D, MW-BW-202S, MW-BW-203S, MW-BW-2071, MW-103, MW-109D, MW-110, MW-111 DR, MW-112D, MW-113, MW-130D, MW-131D, MW-134D, MW-135D, MW-136D, MW- 37D, MW-138D, MW- 39D, MW- 58D, RW-5, RW-6, RW-7, RW-9, RW-10, and OWM31P are detection wells.

The station RGPP requires the wells designated as detection wells to be sampled and analyzed for tritium on a quarterly basis. The aforementioned wells were not sampled during one or more of the quarters in 2012.

Reasons for lack of sampling include well condition deficiencies, low well production, and frozen water preventing sampling.

The Station RGPP also requires designated detection wells be analyzed for gamma-radionuclides, gross-alpha and beta, and strontium 89/90 on an annual basis. MW-103, RW-10, RW-5, RW-6, RW-7, and RW-9 did not have these analyses performed during 2012. The sample is pulled on an annual periodicity and the sample was not able to be obtained for the requisite analyses.

B. Groundwater Results Groundwater Samples were collected from on and off-site wells throughout the year in accordance with the Station radiological groundwater protection program. Analytical results and anomalies are discussed below.

Tritium Samples from all locations were analyzed for tritium activity.

Tritium values ranged from the detection limit to 3,820 pCi/l. Some contamination still exists and monitoring is ongoing (Table B-1.1, Appendix B).

Strontium Strontium-89 and Strontium-90 were analyzed for in 36 samples.

Strontium-89 was less than the required detection limit of 10.0 pCi/liter. Strontium-90 was less than the required detection limit of 1.0 pCi/liter. (Table B-1.1, Appendix B).

Gross Alpha and Beta (dissolved and suspended)

Gross Alpha and Gross Beta analyses in the dissolved and suspended fractions. were performed on groundwater samples during the fourth quarter of the sampling year in 2012. Gross Alpha (dissolved) was detected in five groundwater samples. The concentrations ranged from 1.0 to 19.5 pCi/L. Gross Alpha (suspended) was detected in 5 groundwater samples. The concentrations ranged from 1.0 to 7.3 pCi/L. Gross Beta (dissolved) was detected in 30 groundwater samples. The concentrations ranged from 1.7 to 57.9 pCi/L. Gross Beta (suspended) was detected in 7 groundwater samples. The concentrations ranged from 1.7 to 12.3 pCi/L (Table B-1.1, Appendix B).

Hard-To-Detect Hard-To-Detect analyses were performed on two groundwater samples to establish background levels. The analyses included Fe-55, Ni-63, Am-241, Cm-242, Cm-243/244, Pu-238, Pu-239/240, U-234, U-235 and U-238. No hard-to-detect nuclides were detected at concentrations greater than their respective MDCs.

(Table B-1.3, Appendix B).

Gamma Emitters Naturally occurring K-40 was detected in 5 samples. The concentrations ranged from 37 to 107 pCi/L. No other gamma emitting nuclides were detected in any of the samples analyzed.

(Table B-1.2, Appendix B)

C. Surface Water Results Surface Water Samples were collected from 13 surface water locations throughout the year in accordance with the station radiological groundwater protection program. Analytical results and anomalies are discussed below.

Tritium Samples from all locations were analyzed for tritium activity (Table B-11.1, Appendix B). Tritium values ranged from the minimum detection limit to 408 pCi/I.

Strontium Strontium-89 and strontium-90 was analyzed in one sample and was less than the required detection limits.(Table B-11.1, Appendix B).

Gamma Emitters No gamma emitting nuclides were detected in any of the samples analyzed. (Table B-11.2, Appendix B)

D. Drinking Water Well Survey Requested drinking water wells near Braidwood Station were sampled on a quarterly basis in 2012.

E. Summary of Results - Inter-Laboratory Comparison Program Inter-Laboratory Comparison Program results for TBE are presented in the AREOR.

F. Leaks, Spills, and Releases Previously identified contaminated groundwater plumes are being addressed by the Braidwood Station tritium remediation activities.

There were no liquid leaks, spills, or releases in 2012 that affected groundwater.

G. Trends and Analyses Monitoring of remediation activities indicate that tritium concentrations in affected areas are trending down.

H. Investigations Investigation of historic spills and the groundwater contamination has resulted in groundwater remediation activities at Braidwood Station.

1. Actions Taken

1. Compensatory Actions All Circulating Water Blowdown valve vaults were coated to prevent any leakage of water from the vaults to the groundwater. A remote leakage detection system has been installed which provides continuous monitoring of the vaults. Operations procedures are in place for actions to take in the event the leak detection system alarms.

Walkdowns of the Circulating Water Blowdown pipeline and vaults were performed weekly.

2. Installation of Monitoring Wells Exelon has installed a permanent monitoring well network that ensures that ground water will be appropriately monitored around the plant and at the various remediation sites. Monitoring well locations were based on contamination source, ground flow direction, and source concentration. Some monitoring points are not primarily used for sampling but rather to measure ground water elevation. Water elevation is used extensively around active remediation sites to verify that ground water is still flowing toward remediation wells.

3. Actions to Recover/Reverse Plumes Vacuum Breaker 1 area: Three remediation wells have been installed in this area to remove contaminated ground water. Monitoring of this activity indicates the remediation is proceeding acceptably.

Vacuum Breaker 2 area: Two remediation wells have been installed in this area to remove contaminated ground water. These wells, which became operational in 2008, discharge to the Exelon Pond. The wells are in place to remediate a previously identified contamination plume and were not installed to remediate contamination from a new spill.

Vacuum Breakers 4, 6, & 7: Monitoring wells have been installed within and down gradient of these plumes which originated from vacuum breaker valves along the blowdown line. These sites are being remediated by monitored natural attenuation.

Exelon Pond area: The combination of groundwater sample monitoring and water level monitoring ensures that the active remedial pumping of Exelon Pond continues to capture the tritium that spilled from vacuum breakers 2 and 3 almost ten years ago. Monitoring to date has shown marked reduction in the most contaminated area and the station continues to monitor plume capture to determine whether adjustments are needed in the pumping rate.

Intentionally left blank APPENDIX A LOCATION DESIGNATION

Intentionally left blank TABLE A-1: Radiological Groundwater Protection Program - Sampling Locations, Braidwood Station, 2012 Station Code Sample Description BL-03 Monitoring Well BL-06 Monitoring Well BL-06D Monitoring Well BL-09D Monitoring Well BL-10D Monitoring Well BL-1 1 Monitoring Well BL-11D Monitoring Well BL-12D Monitoring Well BL-13D Monitoring Well BL-14D Monitoring Well BL-15D Monitoring Well BL-16D Monitoring Well BL-17D Monitoring Well BL-18D Monitoring Well BL-21 Monitoring Well BL-22 Monitoring Well BL-23 Monitoring Well BL-24 Monitoring Well BL-25 Monitoring Well BL-26 Monitoring Well BL-27 Monitoring Well D-2D Monitoring Well D-3D Monitoring Well DITCH (DS-2) Surface Water EXELON POND Surface Water F-iD Monitoring Well F-3D Monitoring Well F--4D Monitoring Well F-5D Monitoring Well F-6D Monitoring Well F-8D Monitoring Well F-9D Monitoring Well MW-102R Monitoring Well MW-103 Monitoring Well MW-105 Monitoring Well MW-105D Monitoring Well MW-106D Monitoring Well MW-109D Monitoring Well MW-11 Monitoring Well MW-110 Monitoring Well MW-1 11 Monitoring Well MW-111DR Monitoring Well MW-112D Monitoring Well MW-113 Monitoring Well MW-t 13DR Monitoring Well MW-13 Monitoring Well MW-130D Monitoring Well MW-131D Monitoring Well MW-132D Monitoring Well MW-133D Monitoring Well MW- 134D Monitoring Well A-1

TABLE A-1: Radiological Groundwater Protection Program - Sampling Locations, Braidwood Station, 2012 Station Code Sample Description MW-135D Monitoring Well MW- 136D Monitoring Well MW-137D Monitoring Well MW-138D Monitoring Well MW-139D Monitoring Well MW-14 Monitoring Well MW-140D Monitoring Well MW-141D Monitoring Well MW-142D Monitoring Well MW-143D Monitoring Well MW-144D Monitoring Well MW-145D Monitoring Well MW-154 Monitoring Well MW-155 Monitoring Well MW-156 Monitoring Well MW-158D Monitoring Well MW- 159D Monitoring Well MW-160D Monitoring Well MW-161D Monitoring Well MW-162D Monitoring Well MW-2 Monitoring Well MW-22 Monitoring Well MW-4 Monitoring Well MW-5 Monitoring Well MW-6 Monitoring Well MW-7 Monitoring Well MW-9 Monitoring Well MW-BW-201BD Monitoring Well MW-BW-2011 Monitoring Well MW-BW-201 S Monitoring Well MW-BW-2021 Monitoring Well MW-BW-202S Monitoring Well MW-BW-2031 Monitoring Well MW-BW-203S Monitoring Well MW-BW-2041 Monitoring Well MW-BW-2051 Monitoring Well MW-BW-2061 Monitoring Well MW-BW-2071 Monitoring Well MW-BW-2088D Monitoring Well P-2D Monitoring Well P-4D Monitoring Well P-5D Monitoring Well P-13D Monitoring Well P-14D Monitoring Well RW-IO Monitoring Well RW-5 Monitoring Well RW-6 Monitoring Well RW-7 Monitoring Well RW-8 Monitoring Well A-2

TABLE A-1: Radiological Groundwater Protection Program - Sampling Locations, Braidwood Station, 2012 Station Code Sample Description RW-9 Monitoring Well S-1 D Monitoring Well S-2D Monitoring Well S-4 Monitoring Well S-4D Monitoring Well S-5 Monitoring Well S-6 Monitoring Well S-7D Monitoring Well S-8 Monitoring Well S-8DR Monitoring Well SG-BW-101 Surface Water SG-BW-102 Surface Water SG-BW-103 Surface Water SG-BW-105 Surface Water SG-BW-106 Surface Water SW-101 Surface Water SW-102 POINT C Surface Water SW-103 Surface Water SW-104 A DITCH Surface Water TB-20 Monitoring Well TB-20D Monitoring Well TB-21 Monitoring Well TB-21D Monitoring Well TB-22 Monitoring Well TB-22D Monitoring Well TB-23 Monitoring Well TB-23D Monitoring Well TB-24 Monitoring Well TB-24D Monitoring Well TB-25 Monitoring Well TB-25D Monitoring Well TB-26D Monitoring Well VB1O-1 Monitoring Well VB1-1 Monitoring Well VBI-10 Monitoring Well VBI-10D Monitoring Well VB1 1-1 Monitoring Well VB1-11 Monitoring Well VB1-11D Monitoring Well VBi-12D Monitoring Well VB1-2 Monitoring Well VB 1-2D Monitoring Well VB1-3 Monitoring Well VB1-3D Monitoring Well VB1-4 Monitoring Well VB1-4D Monitoring Well VB 1-5 Monitoring Well VB1-5D Monitoring Well VB1-6 Monitoring Well A-3

TABLE A-1: Radiological Groundwater Protection Program - Sampling Locations, Braidwood Station, 2012 Station Code Sample Description VB1-6D Monitoring Well VB1-7 Monitoring Well VB1-7D Monitoring Well VB1-8 Monitoring Well VB1-8D Monitoring Well VB1-9 Monitoring Well VB1-9D Monitoring Well VB2-10 Monitoring Well VB2-10D Monitoring Well VB2-11 Monitoring Well VB2-1 1D Monitoring Well VB2-12 Monitoring Well VB2-12D Monitoring Well VB2-13 Monitoring Well VB2-13D Monitoring Well VB2-14 Monitoring Well VB2-14D Monitoring Well VB2-15D Monitoring Well VB2-16 Monitoring Well VB2-160 Monitoring Well VB2-17 Monitoring Well VB2-17D Monitoring Well VB2-2D Monitoring Well VB2-5D Monitoring Well VB2-6D Monitoring Well VB2-7D Monitoring Well VB2-9D Monitoring Well VB3-10D Monitoring Well VB3-2 Monitoring Well VB3-4D Monitoring Well VB3-7D Monitoring Well VB3-9D Monitoring Well VB4-1 Monitoring Well VB4-5D Monitoring Well VB4-6D Monitoring Well VB5-2 Monitoring Well VB6-1 Monitoring Well VB7-1 Monitoring Well VB8-2R Monitoring Well VB9-1 Monitoring Well OWM31P Monitoring Well A-4

Figure A-1 Sampling Locations near the Site Boundary of Braidwood Station, 2012 A-5

Figure A-2 Sampling Locations near the Site Boundary of Braidwood Station, 2012 A-6

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Figure A-3 Distant Sampling Locations of the Braidwood Station, 2012 A-7

Intentionally left blank APPENDIX B DATA TABLES

Intentionally left blank TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED INTHE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION H-3 Sr-89 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

DATE BL-03 03/14/12 < 186 BL-03 06/12/12 < 175 BL-03 12/12/12 < 169 BL-06D 06/13/12 < 191 BL-09D 06/18/12 < 178 BL-10D 06/15/12 < 176 BL-1 I 03/14/12 < 186 BL-11 06/11/12 < 174 BL-11 12/12/12 < 175 BL-1 ID 06/15/12 < 178 BL-12D 06/15/12 < 173 BL-13D 06/15/12 < 175 BL-14D 06/15/12 < 177 BL-15D 06/15/12 < 174 BL-16D 06/15/12 < 172 BL-17D 06/15/12 < 177 BL-18D 06/15/12 < 177 BL-19R 03/13/12 < 192 BL-19R 06/13/12 < 189 BL-19R 09/18/12 < 195 BL-19R 12/11/12 < 172 BL-20D 06/15/12 < 174 BL-21 03/13/12 < 186 BL-21 06/13/12 < 174 BL-21 09/17/12 < 176 BL-21 12/11/12 < 177 BL-22 03/12/12 < 184 BL-22 06/12/12 < 174 BL-22 09/17/12 < 178 BL-22 12/11/12 < 176 BL-23 03/12/12 < 184 BL-23 06/12/12 < 174 BL-23 09/17/12 < 176 BL-23 12/11/12 < 174 BL-24 03/12/12 < 182 BL-24 06/12/12 < 170 BL-24 09/17/12 < 177 BL-24 12/11/12 < 174 BL-25 03/12/12 < 183 BL-25 06/11/12 < 172 BL-25 09/17/12 < 175 BL-25 12/11/12 < 174 BL-26 03/12/12 < 185 BL-26 06/11/12 < 172 BL-26 09/17/12 < 175 BL-26 12/11/12 < 169 BL-27 03/12/12 < 182 BL-27 06/12/12 < 171 BL-27 09/17/12 < 175 BL-27 12/11/12 < 172 C-1D 06/13/12 < 194 C-2D 06/13/12 < 193 B-I

TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION H-3 Sr-89 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

DATE CD-1D 06/13/12 < 192 D-1D 06/12/12 < 174 D-2D 06/12/12 < 176 D-3D 06/12/12 < 175 F-iD 06/12/12 < 192 F-iD 12/12/12 < 171 F-4D 06/12/12 < 172 F-4D 12/12/12 < 174 F-5D 03/13/12 460 +/- 140 F-5D 06/12/12 282 +/- 120 F-5D 09/19/12 231 +/- 136 F-5D 12/12/12 180 +/- 119 F-6D 06112/12 < 171 F-6D 12/12/12 < 174 F-7D 03/13/12 191 +/- 126 F-7D 06/12/12 < 171 F-7D 09/19/12 < 191 F-7D 12/12/12 < 171 F-8D 03/13/12 338 +/- 132 F-8D 06/14/12 187 +/- 118 F-8D 09/19/12 342 +/- 140 F-8D 12/12/12 230 +/- 119 F-9D 03/13/12 185 + 122 F-9D 06/12/12 < 172 F-9D 09/19/12 < 198 F-9D 12/12/12 < 172 G-2D 06/15/12 < 175 MW-102R 03/14/12 < 184 MW-102R 06/14/12 < 173 MW-102R 09/19/12 < 193 MW-102R 12/18/12 < 169 MW-105D 06/15/12 < 177 MW-106D 06/18/12 < 174 MW-109D 03/13/12 < 172 MW-109D 06/11/12 < 175 MW-109D 11/14/12 < 181 <3.4 < 0.7 < 1.3 < 0.4 < 1.4 < 1.8 MW-1l 02/02/12 503 +/- 146 MW-u1 09/19/12 357 +/- 125 MW-11 11/13/12 300 +/- 118 < 4.3 < 0.7 < 0.9 < 1.0 7.0 +/- 1.2 1.7 +/- 1.0 MW-l11 11/14/12 < 183 < 3.4 < 0.7 < 1.0 < 1.1 18.3 +/- 1.6 < 1.7 MW-111 DR 06/13/12 < 191 MW-111DR 03/14/12 < 190 MW-111DR 11/15/12 < 185 MW-111DR 12/18/12 < 173 <5.2 < 1.0 <0.3 < 0.4 < 0.9 < 1.5 MW-112D 06/12/12 < 175 MW-112D 11/15/12 < 183 < 3.2 < 0.8 < 0.8 < 0.5 1.7 +/- 1.0 < 1.6 MW-113 11/14/12 < 182 < 3.6 < 0.6 < 1.3 < 0.4 2.3 +/- 1.0 < 1.8 MW-1i13DR 06/14/12 < 196 MW-13 02/02/12 336 +/- 121 MW-13 06/12/12 273 +/- 131 MW-13 11/14/12 260 +/- 120 < 4.2 < 0.8 < 0.8 < 0.3 2.0 +/- 0.9 < 1.6 MW-130D 06/11/12 < 172 B-2

TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION H-3 Sr-89 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

DATE MW-130D 12/18/12 < 173 < 5.1 < 0.7 < 1.2 < 0.4 5.4 + 1.1 < 1.5 MW-131D 06/13/12 < 189 MW-131D 11/14/12 < 182 < 4.0 < 0.6 < 0.7 < 0.9 3.9 - 1.1 < 1.7 MW-1 32D 06/12/12 < 177 MW-133D 06/14/12

172 MW-134D 06/14/12 < 192 MW-134D 11/14/12 < 182 < 3.3 < 0.8 < 0.5 < 0.6 1.7 +0.7 < 1.9 MW-135D 06/14/12 < 180 MW-135D 12/13/12 < 172 < 4.7 < 0.8 < 0.7 < 0.9 < 1.4 < 1.7 MW- 136D 06/13/12 < 195 MW-136D 12/13/12

170 <4.6 <0.6 < 1.0 < 0.3 3.2 +/- 1.0 < 1.9 MW-137D 06/13/12

193 MW-137D 12/13/12 < 172 < 5.1 < 0.7 < 0.6 < 0.5 1.8 +/- 0.8 < 1.6 MW-138D 06/13/12

194 MW-138D 12113/12 < 176 < 6.2 < 0.7 < 0.9 < 0.5 4.2 +/- 1.1 < 1.6 MW-139D 06/14/12 < 176 MW-139D 12/12/12 < 172 < 4.7 < 0.8 < 0.9 <0.7 12.1 +/- 1.3 < 1.3 MW-14 02/02/12 421 +/- 127 MW-14 11/13/12 494 +/- 133 MW-140D 06/14/12 < 173 MW-141D 02/01/12 738 +/- 149 MW-141D 06/12/12 583 +/- 148 MW-141D 09/24/12 666 +/- 140 MW-141D 11/12/12 683 +/- 141 < 3.2 < 0.7 < 4.0 7.3 + 2.5 57.8 +/- 6.7 6.3 +/- 3.7 MW-142D 02/02/12 1460 +/- 205 MW-142D 06/12/12 1780 +/- 235 MW-142D 09/24/12 1200 +/- 179 MW-142D 11/12/12 1680 +/- 227 < 3.3 < 0.9 < 2.7 < 1.1 30.6 +/- 3.7 <2.7 MW-143D 02/01/12 < 183 MW-143D 06/12/12 304 +/- 135 MW-143D 09/21/12 346 +/- 122 MW-143D 11/12/12 256 +/- 126 < 3.8 < 0.8 < 3.9 4.1 +/- 1.7 20.1 +/- 2.0 12.3 +/- 2.1 MW-144D 02/06/12 3020 +/- 352 MW-144D 06/11/12 3820 +/- 431 MW-144D 11/15/12 2550 +/- 313 < 3.8 < 0.8 < 0.6

0.6 3.9 +/- 0.9 8.0 +/- 1.6 MW-145D 12/12/12 211 +/- 115 < 4.8 < 0.6 < 0.7 < 0.7 < 1.3 < 1.3 MW- 154 12/18/12 278 +/- 121 MW- 155 12/18/12 227 +/- 118 MW-158D 06/14/12 < 176 MW-158D 12/12/12 < 172 < 5.0 <0.6 1.3 +/- 0.6 < 0.9 18.2 +/- 1.3 < 1.7 MW-159D 11/13/12

181 MW-161D 02/06/12 826 +/- 163 MW-161D 06/15/12 789 +/- 161 MW-161D 09/19/12 643 +/- 152 MW-161D 11/13/12 656 +/- 142 < 3.5 < 0.7 < 1.6 < 1.0 9.8 +/- 1.5 < 1.6 MW-162D 02/07/12 865 +/- 150 MW-162D 06/12/12 801 +/- 160 MW-162D 09/21/12 765 +/- 144 MW-162D 11/14/12 893 +/- 151 < 4.7 < 0.8 < 0.9 1.3 +/- 0.8 6.9 +/- 1.1 2.5 +/- 1.2 MW-2 02/01/12 864 +/- 154 MW-2 06/15112 927 +/- 167 MW-2 09/24/12 933 +/- 157 B-3

TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION H-3 Sr-89 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

DATE MW-2 11/15/12 923 +/- 161 < 3.2 < 0.9 1.7 + 0.7 < 0.6 5.2 +/- 1.0 < 1.8 MW-22 02/01/12 958 +/- 161 MW-22 06/11/12 944 +/- 168 MW-22 09/20/12 746 +/- 147 MW-22 11/13/12 701 +/- 141 < 4.4 < 0.7 < 2.3 < 0.4 < 2.0 < 1.7 MW-4 02/02/12 797 +/- 151 MW-4 06/11/12 1470 +/- 206 MW-4 09/24/12 1380 +/- 196 MW-4 11/15/12 1160 +/- 180 < 3.8 < 0.6 < 1.2 < 1.1 4.1 +/- 1.2 < 1.7 MW-5 02/06/12 614 +/- 139 MW-5 06/13/12 1080 +/- 175 MW-5 09/21/12 779 +/- 147 MW-5 11/13/12 1200 +/- 177 < 3.4 < 0.8 1.0 +/- 0.5 1.0 +/- 0.7 3.9 +/- 0.8 < 1.6 MW-6 02/02/12 1410 +/- 204 MW-6 06/12/12 1180 +/- 182 MW-6 09/24/12 1410 +/- 199 MW-6 11/13/12 1310 +/- 188 < 4.1 < 0.6 8.2 +/- 3.3 < 1.0 11.4 +/- 1.8 2.3 +/- 1.1 MW-7 02/02/12 1060 +/- 171 MW-7 06/12/12 969 +/- 169 MW-7 09124/12 1180 +/- 176 MW-7 09/24/12 1020 +/- 160 MW-7 11/12/12 1070 +/- 172 < 3.5 < 0.6 < 1.9 3.2 +/- 1.1 3.0 +/- 1.2 4.1 +/- 1.3 MW-9 02/01/12 417 +/- 134 MW-9 06/11/12 500 +/- 146 MW-9 09/19/12 561 +/- 137 MW-9 11/12/12 494 +/- 136 < 4.4 < 0.7 < 4.1 < 2.7 15.0 +/- 4.1 < 5.8 MW-BW-2011 09/25/12 335 +/- 137 MW-BW-201S 02/06/12 274 +/- 134 MW-BW-201 S 06/13/12 324 +/- 135 MW-BW-201 S 09/25/12 259 +/- 117 MW-BW-201S 11/15/12 < 181 < 3.4 < 0.9 < 1.3 < 0.4 10.7 +/- 1.4 < 1.4 MW-BW-2021 09/19/12 199 +/- 127 MW-BW-202S 02/01/12 < 182 MW-BW-202S 09/19/12 < 170 MW-BW-202S 11/12/12 348 +/- 125 < 3.6 < 0.8 < 2.4 < 0.5 11.5 +/- 1.8 < 1.6 MW-BW-2031 09/20/12 < 174 MW-BW-203S 02/01/12 < 183 MW-BW-203S 09/20/12 < 171 MW-BW-203S 11/12112 214 +/- 123 <4.2 < 0.8 < 0.6 < 0.6 4.6 +/- 0.8 < 1.6 MW-BW-2071 02/02/12 537 +/- 148 MW-BW-2071 11/15/12 526 +/- 135 < 3.4 < 0.8 < 3.2 < 0.8 36.2 + 3.1 < 2.6 OWM31P 11/15/12 < 184 < 3.0 < 0.8 19.5 +/- 4.4 < 0.4 57.9 + 2.9 < 1.4 P-13D 03/13/12 494 +/- 141 P-13D 06/14/12 487 +/- 138 P-13D 09/18/12 358 +/- 127 P-14D 06/14/12 < 176 P-2D 06/13/12 < 191 P-2D 12/13/12 < 169 P-4D 03/13/12 960 +/- 164 P-4D 06/13/12 945 +/- 166 P-4D 09/18/12 870 +/- 176 P-4D 12/13/12 858 +/- 148 B-4

TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTIO H-3 Sr-89 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

DATE P-5D 06/14/12 < 175 PW-006 04/18/12 < 175 PW-006 07/12/12 < 196 PW-006A 04/18/12 < 177 PW-006A 07/11/12 < 195 PW-006A 10/22/12 < 175 PW-006P 01/11/12 < 171 PW-006P 04/18/12 < 177 PW-006P 07/12/12 < 199 PW-006P 10/22/12 < 174 PW-01 1 01/11/12 < 172 PW-011 04/18/12 < 176 PW-011 07/11/12 < 198 PW-011 10/22/12 < 179 PW-015 01/11/12 < 172 PW-015 04/18/12 < 175 PW-015 07/11/12 < 199 PW-015 10/22/12 < 177 PW-016 01/11/12 < 169 PW-016 04/18/12 < 176 PW-016 07/11/12 < 196 PW-016 10/22/12 < 176 PW-13 01/11/12 < 171 PW-13 04/18/12 < 174 PW-13 07/12/12 < 197 PW-13 10/22/12 < 174 PWN-103 06/12/12 < 175 RW-10 07/13/12 < 178 RW-6 06/11/12 898 + 151 RW-7 06/13/12 < 193 RW-9 06/18/12 < 175 S-1D 03/14/12 < 183 S-1D 06/14/12 < 173 S-1D 09/19/12 < 194 S-2D 03/14/12 < 184 S-2D 06/14/12 < 178 S-2D 09/19/12 < 194 S-4D 06/14/12 < 178 S-7D 06/14/12 < 178 S-8DR 06/14/12 < 192 VB 2-5D 09/27/12 219 +/- 132 VB 2-9D 09/27/12 < 192 VB 3-2 03/14/12 < 182 VB 3-4D 09/27/12 436 +/- 150 VB-1-12D 06/13/12 < 192 VB-1-4D 06/12/12 < 175 VB-1-5D 06/12/12 < 170 VB-1-6D 06/13/12 < 191 VB-1-7D 06/13/12 < 171 VB-1-8D 06/13/12 < 198 VB-1-9D 06/11/12 917 +/- 151 VB-10-1 03/12/12 < 183 B-5

TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION H-3 Sr-89 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

DATE VB-10-1 06/11/12 < 173 VB-10-1 09/17/12 < 200 VB-10-1 12/10/12 < 169 VB-11-1 03/12/12 < 183 VB-11-1 06/12/12 < 170 VB-11-1 09/17/12 < 175 VB-11-1 12/11/12 < 174 VB-2-11D 07/13/12 < 178 VB-2-12D 07/13/12 < 180 VB-2-13D 07/13/12 < 180 VB-2-14D 07/12/12 < 177 VB-2-15D 07/11/12 < 178 VB-2-16D 07/12/12 < 193 VB-2-17D 07/12/12 < 200 VB-2-2D 07/13/12 < 177 VB-2-5D 03/14/12 197 +/-125 VB-2-5D 06/14/12 < 191 VB-2-6D 07/13/12 < 177 VB-2-7D 07/13/12 < 179 VB-2-9D 03/14/12 < 180 VB-2-9D 06/14/12 < 191 VB-3-10D 07/12/12 < 195 VB-3-2 06/14/12 < 179 VB-3-4D 03/14/12 331 +/-133 VB-3-4D 06/14/12 272 +/-123 VB-3-7D 07/12/12 < 195 VB-3-9D 07/12/12 < 194 VB-4-1 03/13/12 < 183 VB-4-1 06/13/12 < 173 VB-4-1 09/18/12 < 176 VB-4-1 12/11/12 < 173 VB-5-2 03/13/12 < 185 VB-5-2 06/11/12 < 173 VB-5-2 09/19/12 < 193 VB-5-2 12/12/12 < 173 VB-6-1 03/12/12 < 182 VB-6-1 06/12/12 < 175, VB-6-1 09/17/12 < 177 VB-6-1 12/11/112 < 173 VB-7-1 03/12/12 < 183 VB-7-1 06/12/12 < 170 VB-7-1 09/17/12 < 175 VB-7-1 12/11/12 < 169 VB-8-2R 03/12/12 < 179 VB-8-2R 06/11/12 < 174 VB-8-2R 09/17/12 < 175 VB-8-2R 12/11/12 < 173 VB-9-1 03/12/12 < 180 VB-9-1 06/11/12 < 174 VB-9-1 09/17/12 < 175 VB-9-1 12/11/12 < 174 VB1-1 03/13/12 < 169 B-6

TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION H-3 Sr-89 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

DATE VB1-1 06/18/12 < 196 VB1-1 09/26/12 < 169 VB 1-2D 06/18/12 < 189 VB1-3D 06/18/12 < 187 VB13-9 02/16/12 < 172 VB1-9D 02/16/12 1670 t 220 VB1-9D 03/13/12 3770 t 421 VB1-9D 03/13/12 :ount 3490 t 394 VB1-9D 06/18/12 1170 t 178 VB2-6D 11/14/12 < 181 < 3.4 < 0.6 0.7 +/- 0.4 <0.9 2.9 + 0.8 < 1.7 VB3-2 09/19/12 < 193 B-7

TABLE B-I.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 DATE MW-109D 11/14/12 < 11.8

27 <1 <3 <1 <2 <1 <2 < 10 <1 <1 <15 <4 MW-li 11/13/12 < 42.8 < 37 <5 <5 <12 <5 <10 < 6 < 10

13 <5 <5

29 <12 MW-1O 11/14112 < 11.6 <12 <1 <1 < 3 <1 <2 <1 <2

10 <1 <1 <15 <5 MW-111 DR 12/18/12 < 12.2

31 <1 <1 < 3 <1 <2 <1 <2

13 <1 <1 *16 <6 MW-1 12D 11/15/12 < 23.2

20 <2 <2 <6 <2 <4 <3 <4

13 <2 <2

24 <8 MW-1 13 11/14/12 < 11.5

29 <1 <1 <3 <1 < 2 <1 <2 <9 <1 <1 *14 <5 MW-13 11/14/12 < 45.2 < 43 <5 <4 <11 <4 <8 <5 <8

14 <4 <5

32 <9 MW-130D 12/18/12 < 9.2 <7 <1 < 1 <2 <1 <2 <1 <2

10 <1 <1 *13 <3 MW-131D 11/14/12 < 14.4

27 <1 <2 <3 <1 <3 <1 <3 <12 <1 <1

17 <5 MW-134D 11/14/12 < 13.6 *12 <1 <2 <3 <1 <3 <2 <3

12 <1 <1 <17 <6 MW-135D 12/13/12 < 42.4 < 44 <5 < 5 <10 <5 <8 <5 <8 <8 <5 < 5

22 <8 MW-136D 12/13/12 < 47.6

122 <5 <5 <11 <7 <12 <6 <9 <11 <6 <6

27 < .12 Ic MW-137D 12/13/12 < 27.7

63 <3 <2 <6 < 2 < 5 <2 <4 <4 <3 <3 *12 <4 MW-138D 12/13/12 < 42.2

80 <4 <5 <9 <5 <9 <5 <8 <9 <5 <5

22 <6 MW-139D 12/12/12 < 51.2 < 94 <6 <6 < 14 <7 < 12 <7 < 10

12 <6 <5

28 <11 MW-14 11/13/12 < 32.4

29 <3 <3 < 7 <3 <7 <4 <6

12 <3 <4

25 <8 MW-141D 11/12/12 < 22.6 107 + 40 <2 <2 <5 <2 <4 <2 <4

15 <2 <2 < 24 <8 MW-142D 11/12/12 < 19.8

36 <2 <2 < 5 <2 <3 <2 < 4 <14 <2 <2

23 <7 MW-143D 11/12/12 < 12.0

27 <1 <1 <3 <1 <2 <1 <2 <11 <1 <1 *15 <5 MW-144D 11/15/12 < 22.7 *19 <2 <2 <5 <2 <4 <2 <4 < 14 <2 <2

22 <6 MW-145D 12/12/12 < 32.2

55 <3 <3 <8 <3 <6 <4 <6 <7 <3 <3 *18 <6 MW-154 12/18/12 < 10.4 <7 <1 <1 <2 <1 <2 <1 <2 <10 <1 <1 *13 <5 MW-155 12/18/12 < 9.9

22 <1 <1 <2 <1 <1 <1 <2 <9 <1 <1 *13 <4 MW-158D 12/12/12 < 52.3

50 <5 <6

13 <6 <13 <6 <10 <11 <6 <6

29 <9 MW-159D 11/13/12 < 37.2

78 <4 <5

10 <4 < 9 <5 <8

13 <4 <4

29 <10 MW-161D 11/13/12 < 34.7

71 <4 <3 <8 <4 < 7 <4 <6

13 <3 <3 < 28 <8 MW-162D 11/14/12 < 37.7 < 64 <4 <4 <8 <4 <8 <4 <6 <11 <4 <4

28 <9 MW-2 11/15/12 < 1147 < 9.9 <1 <1 <3 <1 <2 <1 <2 <7 <1 <1 <12 < 4 MW-22 11/13/12 < 47.3

41 <5 <5 < 10 <5 <9 <5 <9

15 <5 <5 < 33 <10 MW-4 11/15/12 < 11.8 < 29 <1 <1 <3 <1 <2 < 1 <2

10 <1 <1 <15 <4 MW-5 11/13/12 < 41.7 < 49 <5 <5 < 12 <6 <9 <6 <7 <14 <5 <6 < 34 < 13 MW-6 11/13/12 < 40.2 < 81 <4 <5 <11 <5 <9 <4 <9

14 <4 <5

31 <9 MW-7 11/12/12 < 14.2 *10 <1 <1 <3 <1 <2 <1 <2

13 <1 <1 <17 <5 mw-9 11/12/12 < 12.3 45 +/- 28 < 1 <1 <3 <1 <2 <1 <2 <12 <1 <1 <17 <5

TABLE B-1.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 DATE MW-BW-201S 11/15/12 < 21.0 <18 <2 <2 <5 <2 <4 <2 <4 <12 <2 <2 <21 <7 MW-BW-202S 11/12/12 < 17.1 37 +/- 23 < 1 <2 <4 <2 <3 <2 <3 <12 <1 <2 <18 <6 MW-BW-203S 11/12/12 < 13.0 <9 <1 <1 <3 <1 <2 <1 <2 <12 <1 <1 <18 <6 MW-BW-2071 11/15/12 < 19.7 65 +/- 25 < 2 <2 <4 <2 <4 <2 <4 <12 <2 <2 <21 <6 OWM31P 11/15/12 < 22.0 67 +/-31 <2 <2 <5 <2 <4 <2 <4 <12 <2 <2 <22 <6 P-2D 12/13/12 < 39.9 <77 <4 <5 <10 <5 <10 <5 <7 <8 <4 <4 <22 <7 VB2-6D 11/14/12 < 15.6 <12 <1 <2 <3 <1 <3 <2 <3 <13 <1 <2 <18 <6

TABLE B-1.3 CONCENTRATIONS OF HARD TO DETECTS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Am-241 Cm-242 Cm-243/244 Pu-238 Pu-239/240 U-234 U-235 U-238 Fe-55 Ni-63 DATE MW-145D 12/12/12

0.05 < 0.03 < 0.03 < 0.20 < 0.13 < 0.09 < 0.02 < 0.05 < 157 < 4.4 VB2-6D 11/14/12 < 0.17 < 0.06 < 0.06 < 0.08 < 0.06 < 0.05 < 0.09 < 0.08 < 141 < 3.4 0

TABLE B-II.1 CONCENTRATONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA.

COLLECTION H-3 Sr-89 Sr-90 Gr-A (DIS) Gr-A (SUS) Gr-B (DIS) Gr-B (SUS)

SITE DATE EXELON POND 02/03/12 < 191 EXELON POND 03/13/12

181 EXELON POND 06/14/12

174 EXELON POND 09/17/12

172 FATLAN POND 03/13/12

172 FATLAN POND 06/13/12

193 FATLAN POND 09/17/12

175 FATLAN POND 12/12/12

177 SG-BW-102 11/13/12 408 + 144 SG-BW-105 09/26/12

192 SG-BW-105 11/12/12

180 < 3.0 < 0.7 < 1.0 < 0.4 10.6 + 1.4 < 1.4 SG-BW-106 09/24/12

175 SG-BW-106 09/24/12

194 SG-BW-106 11/13/12

193 SW-05 01/11/12

169 SW-05 04/18/12

174 SW-05 07/12/12

195 SW-05 10/22/12

177 SW-lOl 02/03/12

193 SW-102 02/03/12

166 SW-102 06/18/12

198 SW-1 03 02/03/12

188 SW-103 11/13/12 335 +/- 126 SW-103 DITCH E 09/24/12

169 SW-104 02/03/12

193 SW-104 11/13/12 359 +/- 140 SW-104 DITCH A 09/24/12

168 LAKE DISCHARGE CANAL 02/03/12 < 192 LAKE SCREEN HOUSE INTAKE 02/03/12 < 189 DS-2 02/03/12 < 189 DS-2 11/13/12 < 193 B-li

TABLE B-II.2 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2012 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 DATE DS-2 11/13112 < 37 < 33 <4 <4 <8 <3 <7 <4 <7

13 <4 <4

25 <B8 SG-BW-102 11/13/12 < 39 < 33 <4 <4 <8 <4 <8 <4 <7

13 <4 <4

28 <7 SG-BW-105 11/12/12 < 14 <11 <1 <1 <3 <1 <2 <2 <3

14 < 1 < 1

20 <6 SG-BW-106 11/13/12 < 34 < 65 <3 <4 <9 <3 <7 <4 <6 <11 <3 <4 < 26 < 10 SW-103 11/13/12 < 35

70 <3 <4 <9 <3 <7 <4 <7

12 <4 <4

26 <7 SW-104 11/13/12 < 30

30 <3 <3 <9 <4 <7 <4 <6 < 10 <3 <4 < 25 <7

ML13137A105

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