ML051150176
| ML051150176 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 04/14/2005 |
| From: | Scott D Yankee Atomic Electric Co |
| To: | NRC/FSME |
| References | |
| YA-REPT-00-010-05 | |
| Download: ML051150176 (185) | |
Text
TECHNICAL REPORT TITLE PAGE Report of Continuing Hydrogeologic Investigations in 2004 YA-REPT-00-10-05 Technical Report Number Approvals (Print & Si Name)
Preparer: Dave Scott Date: S/ /
Reviewer: *,ol4V 'v t e- ?6. LSF B Date:
Reviewer: t Mg W. Date: 6 Approver(CognizantManager):Gyv\ QvfeiA v( _Dte: I-\k 015 I
YA-REPT-OO-O 10-05 Report of Continuing Hydrogeologic Investigations in 2004 Yankee Nuclear Power Station Rowe, Massachusetts 2
YA -REPT-00-0 10-05 TABLE OF CONTENTS List of Figures ............. 4 List of Tables ............. 5 List of Appendices ............. 5 Executive Summary ............. 6 1.0 Introduction .8 2.0 Monitoring Well Drilling .10 2.1 Monitoring Well Development . . .12 2.2 Abandonment/Protection of Selected Monitoring Wells . . .12 3.0 Site Stratigraphy .. 13 4.0 Ground Water Level .. 16 4.1 Ground Water Flow . . .16 4.2 Response of Ground Water Level to Precipitation . . . 17 4.3 Ground Water Level Change Related to Drilling or Demolition Activities ... 17 5.0 Ground Water Quality .................. 19 5.1 Tritium in Ground Water . . .19 5.1.1 Sources of Tritium in Ground Water .20 5.1.2 Conceptual Model of Tritium Source and Transport .20 5.1.3 Hydrogeologic Cross-Sections With Tritium .21 5.1.4 Change in Tritium Concentration with Ground Water Level .22 5.1.5 Tritium Source Abatement .23 5.2 Other Radionuclides in Ground Water . . ................................
23 5.3 Non-Radioactive Constituents in Ground Water . . ...........................
23 6.0 Summary and Conclusions .. 25 7.0 Recommendations .. 28 8.0 References ......... 30 3
YA -REPT-00-0 10-05 List of Figures Figure I Monitoring Well Location Map Figure 2 Site Map Showing Locations of Cross-Sections Figure 3 Cross-Section A-A' Figure 4 Cross-Section B-B' Figure 5 Cross-Section C-C' Figure 6 Cross-Section D-D' Figure 7 Cross-Section E-E' Figure 8 Bedrock Elevation Contour Map Figure 9 Outwash Thickness Contour Map Figure 10 Ground Water Elevations in the Shallow Aquifer (less than 25 feet deep) During 2004 Figure 11 Ground Water Elevations in Sands 30 to 100 Feet Deep During 2004 Figure 12 Ground Water Elevations in the Bedrock Aquifer During 2004 Figure 13 Change in Ground Water Levels with Precipitation in Monitoring Wells CB-2 and CB-6 Figure 14 Change in Ground Water Levels with Precipitation in Monitoring Wells MW-103A and MW- 103B Figure 15 Change in Ground Water Levels with Precipitation in Monitoring Wells MW-104B and MW-104C Figure 16 Change in Ground Water Levels with Precipitation in Monitoring Wells MW-106A and MW-109C Figure 17 Monitoring Wells Equipped With Data-Logging Pressure Transducers, Indicating Wells With Observed Water-Level Response to Drilling MW- 109 Figure 18 Change in Ground Water Levels in Monitoring Wells CB-1 and MW-102A Related to Drilling Activities Figure 19 Change in Ground Water Levels in Monitoring Wells MW-102B and MW-102C Related to Drilling Activities Figure 20 Change in Ground Water Levels in Monitoring Wells MW-103B and MW-103C Related to Drilling Activities Figure 21 Change in Ground Water Levels in Monitoring Wells MW-104B and MW-105C Related to Drilling or Demolition Activities Figure 22 Tritium in the Shallow Aquifer (less than 25 feet deep) During 2004 Figure 23 Tritium in Sands 30 to 100 Feet Deep During 2004 Figure 24 Locations of Unplanned Release of Radioactive Material Figure 25 Cross-Section Showing West Wall of SFP/IXP Complex, Looking East Figure 26 Hydrogeologic Cross-Section A-A' with Tritium During 2004 Figure 27 Hydrogeologic Cross-Section B-B' with Tritium During 2004 Figure 28 Hydrogeologic Cross-Section C-C' with Tritium During 2004 Figure 29 Hydrogeologic Cross-Section D-D' with Tritium During 2004 Figure 30 Hydrogeologic Cross-Section E-E' with Tritium During 2004 Figure 31 Change in Tritium Concentrations with Ground Water Levels in Monitoring Wells B- I and CB-I 4
YA -REPT-OO-O 10-05 Figure 32 Change in Tritium Concentrations with Ground Water Levels in Monitoring Wells CB-2 and CB-6 Figure 33 Change in Tritium Concentrations with Ground Water Levels in Monitoring Wells CB-9 and CB-10 Figure 34 Change in Tritium Concentrations with Ground Water Levels in Monitoring Wells CB-1 lA and CW-6 Figure 35 Change in Tritium Concentrations with Ground Water Levels in Monitoring Wells CW-7 and CW- 11 Figure 36 Change in Tritium Concentrations with Ground Water Levels in Monitoring Wells MW-2 and MW-5 Figure 37 Change in Tritium Concentrations with Ground Water Levels in Monitoring NVells MW-102A and MW-102C Figure 38 Change in Tritium Concentrations with Ground Water Levels in Monitoring Wells MW-105B and MW-105C Figure 39 Change in Tritium Concentrations with Ground Water Levels in Monitoring Wells MW-107C and MW-107D Figure 40 Well Network for Post-Decommissioning Phase of Ground Water Monitoring List of Tables Table 1 Summary of Completion Details for Monitoring Wells Drilled During 2003 and 2004 Table 2 Summary of Tritium Concentrations in Ground Water During Monitoring Well Drilling Table 3 Summary Results of Analysis of Screening Ground Water Samples for VOCs Table 4 Summary of Soil Sample Screening Data: Gamma Activity Table 5 Summary of Monitoring Well Elevations and Location Coordinates Table 6 Summary Details of Monitoring Well Development Table 7 Summary Details of Monitoring Well Abandonment Table 8 Summary of Quarterly Synoptic Ground Water Elevations Table 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water Table 10 Summary of Unplanned Releases of Radioactive Material List of Appendices Appendix I Geologist's Logs of Monitoring Wells Drilled in 2004 5
YA -REPT-00-0 10-05 Executive Summary This report discusses the results of continued ground water investigations conducted in 2004 at the Yankee Nuclear Power Station (YNPS) site in Rowe, Massachusetts. These activities included collection and analysis of four quarters of ground water samples, installation of an additional ten monitoring wells to further characterize the stratigraphy and hydrogeology at the site, and permanent abandonment of 22 older wells. Eight additional wells were temporarily abandoned as a protective measure due to their location in the vicinity of ongoing demolition activities. Twenty data-logging pressure transducers were installed in selected wells to continuously monitor ground water levels and a data-logging rain gauge was installed to record precipitation.
Tritium is the only plant-related radionuclide detected in ground water at the site. It occurs in a shallow stratified drift aquifer at concentrations ranging from non-detectable to about 5,000 pCi/L across the site. Tritium is also observed in thin discontinuous sand lenses 30 to 100 feet deep within a dense, otherwise dry lodgement till at concentrations ranging from non-detectable to about 42,000 pCi/L. It is noted that the Environmental Protection Agency's (EPA's)
Maximum Contaminant Level (MCL) is 20,000 pCi/L for tritium. Flow of ground water within the till is limited to the sand lenses or fractures in the till, which are of relatively low yield. The highest tritium concentrations occur adjacent to the Spent Fuel Pool/Ion Exchange Pit (SFP/IX) complex. The lateral extent of tritium in the deeper sand lenses is limited by the discontinuous nature of these lenses within a dense lodgement till. Removal of spent fuel from the Spent Fuel Pool (SFP) in 2003 and subsequent draining of the SFP has eliminated the principal source of tritium to the groundwater.
Ground water investigations completed in 2004 have bounded the north, west, and southwest extent of tritium impact to both the shallow aquifer and the deeper sand lenses within the lodgement till. Monitoring of water levels in several wells equipped with data- logging pressure transducers while drilling new wells was used as a means of determining the presence/absence of a hydraulic connection between sand lenses within the lodgement till. Results indicated that while some of the sand lenses are hydraulically connected, most are not. Of particular importance is the lack of hydraulic connection at well MW-107C, the well with the highest concentration of tritium at the site. The lack of response in this well suggests that the sand lens in which the highest concentration of tritium was detected is relatively isolated, limiting the extent of tritium migration from this lens.
Because of the potential inpacts of ongoing and planned decommissioning activities, initiation of any remedial measures at this time to address tritium in ground water at YNPS would be premature. The SFP/IXP structure will soon be excavated and removed. This structure, with its foundation within the top of the lodgment till, was the source of tritium in both the shallow aquifer and the thin sand lenses within the till. After the SFP/IXP is removed, the empty excavation will be surveyed, demonstrated to satisfy the radiological criteria for unrestricted use, then backfilled. Dewatering of the open excavation will be required during demolition and surveying. It is possible that this dewatering will remove tritium- impacted ground water in its vicinity. Continued sampling of ground water from monitoring wells in the vicinity of the 6
YA -REPT-00-O 10-05 IXP/SFP complex will evaluate the effectiveness of the dewatering on tritium removal. YAEC anticipates that the processes of natural attenuation, including dilution, dispersion, and radioactive decay, will also continue to ieduce the tritium concentrations, as observed during review ofthe ground water monitoring data, to levels below the EPA's MCL.
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YA -REPT-OO-O 10-S05 1.0 Introduction During 2003, Yankee Atomic Electric Company (YAEC) began a comprehensive investigation of the hydrogeology at the Yankee Nuclear Power Station (YNPS) site. The investigation built upon the results of earlier work, and included drilling of an additional seventeen monitoring wells, as well as revising the ground water monitoring program to investigate thoroughly the ground water quality at the site. The results of the 2003 hydrogeologic investigation are detailed in Reference I and the results of the earlier work are summarized in Reference 2.
The 2003 study improved upon earlier work in several respects. The new monitoring wells completely penetrate the unconsolidated deposits that overlie bedrock and more fully characterize the local stratigraphy that controls the movement of ground water beneath the site.
As a result, sand lenses impacted with tritium were found interlayered within a lodgement till that underlies the shallow stratified drift aquifer, where a plume of tritium had been identified earlier. Tritium concentrations within the deeper sand lenses are higher than those in the shallow aquifer as the sand lenses are discontinuous and are interlayered within a very dense, dry, lodgement till. Gound water flow within this deeper deposit is much more restricted and slower than in the shallow stratified drift deposits due to the higher hydraulic conductivity of the latter unit.
A schedule of quarterly ground water sampling has been implemented in all new and previously existing monitoring wells. This activity is completed using the low-flow sampling technique in accordance with YNPS Procedure AP-8601 (Reference 3) and includes a thorough process of data verification and validation. The radiochemical analysis of ground water samples includes tritium, gross alpha, gross beta, gamma-emitting radionuclides and eleven hard-to-detect species.
A total of six rounds of quarterly samples, including one in each quarter of 2004, have now been collected and analyzed. The data indicate that tritium is the only plant-related radionuclide detected in ground water at the YNPS site.
The 2003 inquiry report (Reference 1) recommended installation of additional monitoring wells in areas of the site that had not been investigated, to further define the extent of tritium impact in ground water. Drilling in three additional locations was completed during the summer of 2004, and the details of that work are reported below. Geologic information gained from the 2004 drilling program resulted in a slightly revised interpretation of the sedimentary stratigraphy of the site and allowed improved characterization of the distribution of tritium in the ground water.
The pertinent hydrogeologic data gathered during the investigation of 2004 are included in several summary tables. Significant findings and conclusions are supported by a comprehensive series of figures depicting features of interest at the site.
Other activities completed during 2004 include installation of 20 data-logging pressure transducers in selected monitoring wells (Reference 4). These instruments were used to record and store ground water levels. The ground water levels were evaluated for trends related to precipitation events or stresses imposed on the aquifer by drilling or demolition activities, in an effort to evaluate the connectivity of subsurface units at available monitoring wells. In addition, 8
YA -REPT-OO- 10-05 a total of twenty-two (22) monitoring wells constructed prior to 2003 were permanently abandoned in 2004 because they were located in areas of active demolition where the integrity of the well might have been compromised. Permanent abandonment was completed in accordance with Massachusetts Department of Environmental Protection guidance (Reference 5) and YNPS Procedure AP-8125 (Reference 6). Eight additional wells were temporarily abandoned by cutting and capping the well below ground surface, covering the wellhead with a steel plate and burying it to prevent damage during demolition. These wells will be restored following demolition and raised to new site grades to support future groundwater monitoring. Additional wells may be constructed at selected locations following site restoration to replace some of those abandoned.
Because of ongoing demolition activities at the site, monitoring wells have not yet been drilled at certain inaccessible locations. Two additional well clusters are anticipated in the vicinity of the SFP/IXP complex, which was the primary source of release of tritium to ground water. The purpose of these wells is to further characterize the stratigraphy and ground water flow domain and to verify that higher levels of tritium do not exist further down gradient. When access to many of the now inaccessible monitoring wells is possible later in 2005, the ground water sampling will continue, and will incorporate any new monitoring wells that may be drilled.
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YA -REPT-00-0 10-05 2.0 Monitoring Well Drilling Ten wells were installed in three locations in 2004. The new wells are MW-106A, B, C, Et MW-108A, B, C; and MW-109B, C, and D. The well locations are shown in Figure 1.
Monitoring wells MW-106B, MW-108B, and MW-109B were the first wells drilled at each respective location. Each "B" well penetrates the full thickness of sediments overlying bedrock, which ranged from 174 to 233 feet at these locations, and were completed thirty two, nineteen and sixteen feet into bedrock, respectively. Wells MW-106A and MW-108A were completed in the shallow aquifer comprised of stratified drift. The remaining five wells were completed in thin water-bearing sand lenses encountered interlayered within the lodgement till and glaciolacustrine sediments that underlie the stratified drift. Geologist's logs and construction details for each of the monitoring wells are in Appendix 1. Table I summarizes the completion details for the monitoring wells installed in 2003 and 2004.
As in 2003, the 2004 wells were drilled by the rotosonic method, in accordance with Reference 7 and Reference 8. The rotosonic drill uses a combination of high-frequency vibration, rotation>
and down pressure on a string of drill rods to advance a core barrel attached to the bottom of the drill rod string. A continuous sample of soil from the formation is collected in the core barrel for examination, descriptionr and analysis. The core barrel is advanced ahead of a steel drill casing of slightly larger diameter than the core barrel. The drill casing is advanced to stabilize and maintain an open borehole as drilling proceeds, and is withdrawn when the target depth has been reached and construction of a monitoring well is complete.
The drill casing also isolates any water-bearing zones encountered in the borehole from overlying and underlying strata, to minimize commingling of ground water from discrete zones or cross-contamination of aquifers as drilling proceeds. When a water-bearing zone was encountered, drilling continued to the bottom, until an aquitard was reached. A slurry consisting of bentonite clay and water was then placed in the casing. The casing was pressurized to force the slurry out from the bottom and up along the outside, to seal the sidewall of the borehole.
This process was repeated several times in each borehole in which multiple water-bearing sand lenses were encountered, as noted in the logs in Appendix 1. Reference I provides a detailed description of the rotosonic drilling procedure used to advance the boreholes, collect soil samples, screen the samples in the field, and construct monitoring wells.
Ground water from cach water-bearing zone encountered was sampled before drilling deeper.
These screening samples were collected by bailing from the cased borehole with a disposable 3-foot long by 1l2-inch diameter polyethylene bailer. A new bailer was used for each sample to ensure that contaminated sampling equipment did not affect the results of sample analysis.
Each screening ground water sample was analyzed for tritium in the on-site radiochemistry laboratory by liquid scintillation. No tritium was detected at a detection limit of 2,000 picocuries per liter (pCifL) by the on-site lab in any of the ground water samples. The screening samples were also analyzed for gamma-emitting radionuclides by gamma spectroscopy in the on-site lab.
No gamma-emitting radionuclides were detected.
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YA -REPT-00-O 10-05 These screening samples were also analyzed for tritium by an off-site contract radiochemistry laboratory, with a detection limit of 300 pCi/L. Table 2 summarizes the results of analysis for tritium of the screening samples collected during both the 2003 and 2004 drilling campaigns.
Table 2 indicates that tritium was detected in only three of the screening ground water samples collected in 2004, at relatively low concentrations ranging from 460 to 880 pCi/L. As a point of reference, the United States Environmental Protection Agency has established a Maximum Contaminant Level of 20,000 pCi/L for tritium in drinking water.
The screening ground water samples were also analyzed for volatile organic compounds (VOCs) by EPA method 8260B by an off-site contract laboratory. A few VOCs were detected in the 2004 screening samples at concentrations below or near their detection limits of generally one to five micrograms per liter. These analyses were of screening samples collected from boreholes with drilling equipment installed in them, and not from developed wells. Because of the sampling method, their results are unreliable at the low concentrations measured and cannot be considered representative of the ambient ground water quality. The results of analysis of the screening ground water samples for VOCs, which are not validated, are summarized in Table 3.
After removal from the core barrel, each soil sample was screened for radioactivity at the field location with an Eberline RM14 Frisker. Only background radiation levels were detected. A composite sample consisting of approximately two kilograms of soil was prepared from each foot section of core. This composite sample was analyzed for gamma-emitting radionuclides by the on-site radiochemistry laboratory. Table 4 is a summary of the soil screening analytical data.
Table 4 shows that no plant-related gamma-emitting radionuclides were found above the detection limits noted.
Each soil sample was also screened in the field for the presence of VOCs using a portable flame ionization detector (FID). VOCs were indicated in only one sample from a depth of 15 to 18 feet below grade in MW-108B at a concentration of 100 parts per million. An organic silt was encountered at this depth, in a location where fill was placed to construct the peninsula upon which the cooling water intake structure for the power plant was built. The fill buried the former lake-bottom sediment consisting of organic silt. Because no source of synthetic organic compounds existed in the vicinity of MW-108B and no plume of VOCs has been identified in the ground water, the FID measurement in this sample is inferred to be due to naturally-occurring methane in the silt. Soil gas surveys have identified the presence of naturally-occurring methane associated with organic deposits, such as peat, in other areas of the site, including the Southeast Construction Fill Area (SCFA) and the ISFSI.
A Massachusetts Licensed Land Surveyor determined the horizontal and vertical coordinates of each monitoring well. The horizontal location of each well is referenced to the State Plane Coordinate System and its vertical elevation is referenced to mean sea level. A summary of the.
coordinates for all monitoring wells is provided in Table 5.
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YA -REPT-O00010-05 2.1 Monitoring Well Development Each well was developed shortly after construction using inertial displacement or electric submersible pumps to remove a minimum of three well volumes of ground water. This process removes fine-grained sediment that may have entered the well during construction, helps improve hydraulic connection between the screen zone of the well and the adjacent aquifer, and allows collection of ground water samples that are generally representative of the ambient water quality in the formation. Table 6 summarizes the results of development of the wells drilled in 2004.
2.2 Abandonment/Protection of Selected Monitoring Wells Some monitoring wells installed prior to 2003 were in locations where ongoing demolition activities posed a risk of well damage. Twenty.-two (22) of these older wells were permanently abandoned during the summer of 2004 to eliminate the potential for aquifer contamination resulting from damage. These wells were also of less precise construction compared to the current rotosonic method used for installation. For example, many of the wells were completed with screens spanning the contact between the shallow aquifer and the underlying lodgement till, or between bedrock and the overlying sediments. The rotosonic drilling method allows recovery of complete soil cores and accurate placement of well screens within the appropriate aquifer zones. The need for replacement wells in one or more of these areas will be evaluated as the ground water investigation proceeds. Table 7 summarizes the details of the abandoned monitoring wells and Figure 1 shows their locations. The wells were abandoned in accordance with Massachusetts Department of Environmental Protection guidance (Reference 5) and YNPS Procedure AP-8125 (Reference 6).
Three of the monitoring well clusters drilled in 2003 (MW-101, MW-102 and MW-107) are located directly beneath the reactor support structure and fully penetrate the sedimentary section overlying bedrock. Some of these specific wells contain significant concentrations of tritium and are essential to the ongoing ground water investigation at the site. Therefore, measures were taken to protect rather than permanently abandon them prior to active demolition of the structure.
In Decenber 2004, the area around each well cluster was excavated to a depth of approximately five feet below grade. The casing of each well was cut at the bottom of the excavation, a water-tight plug was placed in each wellhead and a steel road box set in concrete was installed. A layer of soil was placed over each road box and a steel plate four by four feet square and one inch thick was then placed in the bottom of the excavation. The excavations were then backfilled to grade level.
These precautions will protect the wells during demolition of the reactor support structure and adjacent structures. When demolition is complete, the wellheads will be exposed and the well casings will be extended to the new grade elevation prescribed in the final site grading plan.
New steel road boxes will again be set in concrete over each wellhead at the new grade level and sampling of ground water from the wells will resume.
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YA-RET-00-0 10-05 3.0 Site Stratigraphy Ground water investigations began at YNPS in 1977, with installation of the first monitoring well. Since then, a total of 65 additional monitoring wells have been installed. Sampling of the early wells identified tritium in shallow ground water within the stratified drift (water table aquifer) beneath the site. The concentration of tritium in the shallow ground water was generally low and ranged from non-detectable to about 5,000 pCi/L currently.
The most recent round of drilling occurred during the summer of 2004, when ten wells were installed to further characterize the hydrogeologic features at the site. This recently completed investigation followed a comprehensive episode of investigation during 2003 when the first deep exploration of the stratigraphy, hydrogeology, and ground water quality was conducted at the site.
Before 2003, virtually all of the wells installed (with the exception of the plant potable water wells) were shallow and did not penetrate the lodgement till, a dense, mostly dry unit directly underlying the stratified drift. Soil samples were not collected during drilling of the potable water wells, so little information regarding the stratigraphy at those locations was learned from these installations. The lodgement till is a dense and silty formation that does not store or transmit useable quantities of ground water. What little water may exist appears to be limited to fractures within the till.
During the 2003 Summer drilling program, for the first time, several monitoring wells were drilled and soil samples collected through the entire sequence of unconsolidated deposits overlying bedrock. Continental glaciers that occupied the region during the Pleistocene geologic epoch deposited these unconsolidated soils. The results of the 2003 investigation suggested that the lodgement till underlying the stratified drift was about thirty feet thick and was underlain by a thick sequence of glaciolacustrine sediments that had been deposited within a glacial lake.
Several thin, discrete sand lenses containing tritium at concentrations greater than those measured in the stratified drift were encountered within what was then interpreted to be the glaciolacustrine sequence.
The 2004 drilling included installation of monitoring wells at two locations (MW-106 and 108) near the middle of the Deerfield River Valley. These were some of the deepest wells that have been drilled at YNPS and they penetrated the stratified drift, lodgement till, and glaciolacustrine deposits that had been encountered elsewhere on site. Correlation of the sediments exposed by the 2003 and 2004 drilling campaigns revealed that the contact between the lodgement till and glaciolacustrine deposits is gradational and that the lodgement till is thicker throughout the site than it was interpreted to be on the basis of the 2003 investigation. As a result, the top of the underlying glaciolacustrine sequence is deeper than originally thought. This interpretation implies that many of the thin, discrete sand lenses are interlayered within the lodgement till rather than the glaciolacustrine sequence as previously thought.
Figure 2 shows the trace at ground surface of five cross-sections. Figures 3 through 7 show the stratigraphy along these five cross-sections, A-A', B-B', C-C', D-D' and E-E', oriented in various directions across the site. Except for section B-B', each section passes through the 13
YA -REPT-OO-O 0-05 I
central region of the radiologically controlled area (RCA) of the. site. Cross-sections AA' through DD' are revised from those presented in Reference 1. Section E-E' is new to this report. The monitoring wells drilled in 2004: MW-106, MW-108, and MW-109, are shown in cross-sections A-A', C-C', and E-E', respectively.
The cross-sections show a sequence of three sedimentary units overlying bedrock. Immediately below ground surface is a layer of stratified drift ranging in thickness from zero to about 40 feet.
A water table aquifer exists within this layer. Beneath the stratified drift is a very dense lodgement till that is not water bearing except for a few lenses of water-bearing silty sand, which are a few feet thick and are interlayered within the lodgement till. The till ranges in thickness from zero in the area of monitoring well CW-10 to at least 210 feet in the area of the plant potable water well.
The depositional process that produced the sand lenses within the till can be described as follows. Short-term fluctuations in climate caused warming that may have spanned a period of a few years to a few decades. This resulted in a temporary stagnation or retreat in movement of the ice sheet and a net increase in melt water. This melt water deposited the relatively clean, well-sorted sand lenses into crevasses and ice channels within or on the margins of the glacier.
As the climate reverted to colder temperatures that were more normal throughout the Pleistocene, there occurred a net increase in snow accumulation and decrease in melt water. Under these conditions, the ice front advanced, once again depositing lodgement till beneath its base and overriding the crevasse and ice-channel filling.
This sequence of fluctuating climate, repeated during several episodes, resulted in a series of thin, discrete sand lenses that are found interlayered within the lodgement till at YNPS. The process by which the sand lenses apparently were deposited suggests that they are discontinuous and of limited extent. This stratigraphy has obvious implications for the transport of contaminants in ground water and suggests that the thin, discrete sand lenses do not provide a mechanism for flow over distances of more than a few hundred feet. This judgment is based upon the lack of correlation between water level measurements in sand lenses found in boreholes separated by more than a few hundred feet, as measured by installed pressure transducers. This judgmert is also supported by the limited lateral distribution of tritium found within the sand lenses from screening data collected during the well installation process.
The observed stratigraphy also may explain why tritium is more concentrated in some of the sand lenses than in the shallow aquifer. As shown in Figures 3, 5, 6, and 7, the bottom slab of the SFP is below the top of the lodgement till. These figures show that the SFP/IXP complex is in direct contact with both the stratified drift and the underlying lodgement till. Therefore, a leak from the SFP/IXP complex likely would have released tritium to both the stratified drift and the lodgement till. Ground water flow within the deeper system is slower and more restricted than in the stratified drift, which has higher hydraulic conductivity and is more homogeneous and continuous. As a result, a greater number of aquifer volumes of fresh water have flushed through the shallow aquifer since tritium was released to the environment, compared to the deeper system. This issue is discussed further in Section 5.1.2.
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YA -REPT-000-10-05 A sequence of glacial lake deposits (glaciolacustrine sediments) underlies the lodgement till from the area north of the Radiologically Controlled Area (RCA) and extending north and west to the middle of the Deerfield River Valley. These lake deposits extend to the bedrock surface. This sequence is generally comprised of silt and clay, some of which is well laminated. Sandy zones that are water bearing are also found within the glaciolacustrine sediments. These sandy zones were likely formed during periods when stream flow into the lake was relatively high and coarser-grained sediment could be transported into the lake by the faster-flowing water.
The lake deposits are wedge-shaped in cross-section, being thickest toward the middle of the Deerfield River Valley, and thinning to the south where the lakeshore formerly existed. Sections D-D', EE', and A-A' show the glaciolacustrine sediments pinching out at the southwest, west, and northwest perimeter, respectively, of the vapor container that enclosed the nuclear reactor.
This configuration suggests that the lakeshore formerly curved around that portion of the site.
The sediments laid down in the lake were later buried by more than 100 feet of lodgement till and stratified drift.
The local bedrock is a dark gray, medium to coarse-grained albite gneiss. In addition to abundant 2 to 5 millimeter megacrystals of albite, two other predominant minerals form this rock, quartz, and biotite. This is a metamorphic rock type that has been mapped by the United States Geological Survey as the Lower Cambrian Hoosac Formation (Reference 9). The monitoring wells recently installed in the bedrock indicate that the top few tens of feet of the rock are moderately fractured. The fractured rock comprises an aquifer that yields up to a few gallons per minute of water in some monitoring wells.
Figure 8 shows contours of equal elevation of the bedrock surface, which generally slopes down steeply toward the northwest and west, in the area west and north of the former turbine building.
Beneath the vapor container and farther south, the slope of the bedrock surface is more gradual to the southwest and parallel to the axis of the Deerfield River Valley below Sherman Dam. This configuration of the bedrock mirrors the topography on the knoll to the east of the site, where the bedrock outcrops at ground surface and slopes steeply to the northwest and west, and more gently to the southwest. Figure 9 is a contour map showing the thickness of outwash (stratified drift) across the site. Figures 8 and 9 are revisions to Figures 2 and 3 from Reference 1.
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YA -REPT-00-O 10-05 4.0 Ground Water Level Ground water levels were measured in accessible monitoring wells during one day each quarter in accordance with Reference 10. This synoptic round of water level measurements is collected during a one-day period to minimize the effects of diurnal ground water fluctuations. The synoptic water level measurements provide a gauge of the head distribution in the local ground water system. Table 8 is a summary of the quarterly synoptic ground water levels measured in 2004.
4.1 Ground WaterFlow The following discussion focuses on the potential for horizontal ground water flow. Vertical ground water flow potential will be discussed in Section 5.1, where vertical flow potentials are illustrated on several hydrogeologic cross-sections.
The depth to water in each monitoring well was measured from the top of casing of the well with an electronic water-level meter. By subtracting the measured depth to water from the surveyed elevation of the top of casing, the elevation of the water level in each well was calculated. These elevations were then plotted at the surveyed location of each well on a map of the site. All water-level elevations measured in wells completed in the same aquifer were then contoured to provide a map showing ground water equipotential lines within the aquifer. Flow within the aquifer is from areas of relatively high potential (elevation) to areas of lower potential, in a direction normal to the elevation contours.
Figure 10 is a compilation of contour maps of the water level elevations in the shallow aquifer for the four quarters of 2004. These maps demonstrate a generally northwest flow direction in the shallow aquifer through the Radiologically Controlled Area (RCA), with a more westerly flow downgradient of the RCA, toward the Deerfield River. A second flow path to the northeast and turning to the northwest is shown in the small sib-basin through which the tributary to Wheeler Brook flows, in the area of the Southeast Construction Fill Area (SCFA). The set of four figures shows generally the same flow pattern throughout the year, with a few feet of vertical fluctuation seasonally. The highest water levels generally occur in the second quarter and the lowest in the fourth quarter.
Figure 11 is a compilation of quarterly contour maps of the water level elevations in sand lenses 30 to 100 feet deep within the lodgement till during 2004. This set of maps shows a more westerly flow direction in the vicinity of the vapor container during each quarter, relative to the shallow aquifer. However, the flow subsequently turns toward the northwest and follows a path similar to that in the shallow aquifer, toward the Deerfield River. Comparison of Figure 10 with Figure 11 shows that the water level elevations in the deeper sand lenses are generally 10 to 15 feet, and as much as 30 feet lower than in the shallow aquifer.
Figure 12 is a compilation of quarterly contour maps of the water level elevations in the bedrock aquifer during 2004. The flow directions shown in these maps during each quarter are very similar to those shown in the sand lenses 30 to 100 feet deep.
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YA -REPT-00-0 10-05 4.2 Response of Ground WaterLevel to Precipitation In September of 2004 a data- logging rain gauge was installed at the site. The gauge records accumulated precipitation in 0.01-inch increments that can be summed to provide a daily total.
Figures 13 through 16 show the ground water levels logged in eight monitoring wells in which data-logging pressure transducers were installed, together with daily precipitation totals for the period of September 24 through October 22, 2004. With the exception of MW-106A (Figure 16), water levels in the wells show little correlation with precipitation.
This phenomenon is likely due to a soil moisture deficit at the end of the growing season, which prevents most rainwater from infiltrating deeper than the root zone to recharge the ground water.
The exception is in MW-106A, a shallow well located adjacent to a small wetland and at the lowest surface elevation of the wells depicted in Figures 13 through 16. The delayed response of ground water levels to precipitation events provides insight to why no correlation between water level and tritium concentration is apparent as discussed in Section 5.1.4. Continued logging of water levels and precipitation accumulation throughout the year will likely show greater correlation between the two parameters in more wells, particularly during the spring.
4.3 Ground Water Level Change Related to Drilling or Demolition Activities Figure 17 shows the locations of eighteen monitoring wells in which data-logging pressure transducers were installed during the summer of 2004. The instruments recorded water levels in these wells at 30-second intervals. New monitoring wells were drilled and developed at the MW-109 location during the period July 20 through August 12, 2004. By comparing the hydrographs of selected wells to the log of daily field activities it is possible to correlate water-level response to nearby drilling activities. This exercise provides insight to the degree of hydraulic connection between different hydrogeologic formations. Figure 17 illustrates that hydraulic connection was observed in four monitoring wells within about 250 feet of the MW-109 location.
Figure 18 is a hydrograph illustrating the water levels recorded in monitoring well CB-1 during the period when drilling occurred at the MW-109 location. This figure shows a clear connection between monitoring well COI1 (screened in the shallow aquifer from 15 to 25 feet below grade) and the shallow aquifer in the location of MW-109. As shown on Figure 1, the horizontal distance between these two wells is approximately 250 feet. It is significant that no response is evident in CB-1 when drilling proceeded deeper at MW-109 into the lodgement till and interbeded sand lenses. The lack of water-level response suggests that the shallow aquifer and deeper sand lenses are not hydraulically connected in the area of these wells.
Similarly, Figure 18 illustrates that water-level response was recorded in MW-102A (screened from 33 to 38 feet below grade in a thin sand lens within the lodgement till) %Nhilecompleting various drilling activities in the depth range of 45 to 65 feet in the MW-109 location, approximately 140 feet away. However, it is again significant that no water-level response is evident in MW-102A while drilling MW-109 through the shallow aquifer, before reaching the deeper sand lens.
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YA -REPT.O0-0 10-05 Figure 19 shows a water-level response in MW-102C (screened in a thin sand lens within the lodgement till from 94 to 99 feet below grade) while drilling into a thin sand lens 156 to 159 feet deep in the MW-109 location. This response indicates hydraulic connection between these two sand lenses. It is significant that although shallower sand lenses were encountered in MW- 109 at depths of about 90 to 99 feet and 120 to 135 feet (Figure 7), no response was recorded in the hydrograph of MW-102C when drilling through these sand lenses at the location of MW-109.
This observation is further evidence that the sand lenses are discontinuous and isolated. While some sand lenses may be hydraulically connected, not all are.
MW-107C is screened in a thin sand lens about 30 feet below grade adjacent to the SFP/IXP complex and contains ground water with the highest concentration of tritium at YNPS. MW-107D is located next to MW-107C, and is screened in another thin sand lens about 80 feet deep.
Drilling at the location of MW-109, approximately 200 feet west of MW-107C and D, induced no response in the water-level data for MW-107C or MW-107D. The lack of any response in these wells, when responses were seen in nearby wells MW-102 A and C, suggests that the thin sand lenses in which MW-107C and D are completed are relatively isolated and of limited extent.
Figure 19 also shows a water-level response 120 to 130 feet deep in the bedrock aquifer at MW-102B while coring and sampling ground water from the bedrock 174 to 190 feet deep in the MW-109 location. No water-level response is evident in MW-102B while drilling in the lodgement till above the bedrock in MW-109, indicating that the bedrock aquifer is hydraulically isolated from the till in the area of these wells. The hydrograph of MW-102B also shows the effects of earth tides, a natural cyclic feature caused by changing gravitational forces, which is unrelated to drilling activities.
Figure 20 indicates a draw down of the water level in MW-103B (screened from 285 to 295 feet below grade in the bedrock) in response to pumping while developing MW-106B (screened from 251 to 261 feet below grade in bedrock), approximately 250 feet away. The lower plot in Figure 20 illustrates the very slow recovery of water level in MW-103C over an approximate 20-day period, after pumping and sampling the well. MW-103C is screened in silty sand with obviously very low hydraulic conductivity.
Figure 21 illustrates a hydraulic connection between another set of bedrock wells approximately 175 feet apart. The water level in MW-104B (screened from 184 to 194 feet below grade in the bedrock) was perturbed while drilling in the bedrock from 196 to 215 feet below grade in MW-108B. A lack of water-level response in the earlier part of the hydrograph for MW-104B indicates that no effects were recorded as MW-108B was drilled through the glaciolacustrine deposits above bedrock. This lack of response indicates that the bedrock and glaciolacustrine deposits are hydraulically isolated in the area of these wells.
Finally, the lower plot in Figure 21 shows the effect of demolition activities at YNPS on water level in MW-105C. Instantaneous response in water level is visible in the hydrograph of this well, which is screened in a sand lens from 27 to 37 feet below grade, to dropping of large sections of steel that were cut away from the vapor container.
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YA-REPT-OO-O 10-05 5.0 Ground Water Quality Six consecutive rounds of quarterly ground water samples, including one in each quarter of 2004, have been collected and analyzed under the revised ground water monitoring program. Each round of data has been fully validated and verified, in accordance with Reference 3. Reference 11 reported results of the first two quarters of sampling and analysis in 2004. The quarterly samples were obtained from accessible monitoring wells using a low-flow sampling technique in accordance with Procedure AP-8601 (Reference 3). Radionuclide analysis include tritium, gross alpha, gross beta, gamma-emitting radionuclides, and eleven hard-to-detect species. The data indicate that tritium is the only plant-related radionuclide detected in ground water at the YNPS site. Table 9 is a summary of the six quarters of validated analytical results.
5.1 Tritium in Ground Water A plume of tritium exists in the shallow stratified drift aquifer. The concentrations in this plume range from non-detectable to about 5,000 pCi/L, with the highest concentrations located in the vicinity of the SFP/IXP complex. Figure 22 shows the configuration of the shallow tritium plume in plan view, for the four quarters of 2004. This figure reveals that the size and shape of the plume vary somewhat throughout the year, but the net concentrations remain relatively the same. The orientation of the shallow plume is generally aligned with the direction of shallow ground water flow shown in Figure 10.
Figure 23 depicts tritium impact during the four quarters of 2004 in deeper water-bearing sand lenses at 30 to 100 feet interlayered within the lodgement till, and possibly extending into the glaciolacustrine deposits. This deeper zone of impact is smaller in lateral extent relative to the shallow plume, but is more concentrated because of the restricted ground water flow within the discontinuous, low-yielding sand lenses. Concentrations in the deeper zone of impact range from about 5,000 to 42,000 pCi/L (in those sand lenses where tritium is detected) with the highest values again located adjacent to the SFP/IXP complex.
The shape of the impacted zone in the sand lenses 30 to 100 feet deep appears to be elongated in a northerly direction. This orientation is not what might be expected when viewing the ground water flow potential within these sands, as inferred in Figure 11. This discrepancy is likely related to the heterogeneous nature of the multiple discrete sand lenses that are inter-layered, but not hydraulically connected, within a virtually, impermeable lodgement till, resulting in anisotropic flow along unpredictable contaminant flow paths.
Figure 23 reveals that the deeper zone of tritium impact appears to be less concentrated in March relative to the remaining three quarters in 2004. This condition resulted from damage to monitoring wells MW-107B, MW-107C, and MW-107D. Demolition activities early in 2004 damaged the road boxes allowing surface water runoff to enter the wells and dilute the ground water within them. The wellheads were repaired and infiltration of surface water was terminated shortly after the damage occurred. Figure 23 shows that during the last three quarters of 2004, ground water in the vicinity of the screen zones in MW-107C and D returned to tritium 19
YA-REPT-00-01 0-05 concentrations similar to those observed before the damage occurred. Refer to Figures 18 and 19 in Reference I for an illustration of the deeper zone of impact prior to March 2004.
5.1.1 Sources of Tritium in Ground Water The source of tritium in ground water is from leaks of contaminated cooling water from plant equipment located in the SFP/IXP complex that occurred during plant operation. Table 10 is a summary of unplanned releases of radioactive material during the operating history of YNPS.
The information in Table 10 is reproduced from Appendix A2 of the Historical Site Assessment (Reference 12) prepared for the YNPS License Termination Plan (Reference 13). The location of each event is shown in Figure 24. The descriptions in Table 10 indicate that most unplanned releases involved a small volume of water that was promptly contained. The impacted area was decontaminated and no significant impact to the environment occurred.
Comparison of Figure 24 with the shallow ground water flow in Figure 10 shows that the releases that occurred south (upgradient) of the SFP/IXP conplex were located upgradient of several monitoring wells. These releases occurred at or within a few feet of ground surface and any impact to the ground water would have been revealed by sampling the shallow monitoring well network. Figure 22, showing tritium in the shallow aquifer, indicates no such impacts south of the SFPIIXP complex.
5.1.2 Conceptual Model of Tritium Source and Transport Figure 25 is a cross-section of the west wall of the SFP/IXP complex, looking east. The figure shows the relation between the foundation of the SFPAIXP and the shallow stratigraphy in its vicinity. The approximate locations of those unplanned releases of radioactive material listed in Table 10 that occurred adjacent to the SFP/IXP complex are also illustrated in Figure 25.
As described in Table 10, most of the releases shown consisted of small volumes that were promptly contained and removed. The exception is described in Abnormal Operating Report (AOR) 64-13 that documented a leak at the construction joint at the common wall between the SFP and the IX Pit. The information in Table 10 indicates that this leak may have existed for several months. Figure 25 shows that a release of water contaminated with tritium at the location described in AOR 64-13 would have entered the stratified drift, flowed through the foundation backfill and into the top of the lodgement till. Tritium contaminated water likely flowed through the permeable foundation backfill and was present in the fill surrounding the fuel transfer chute under the SFP, which is the lowest part of the structure. Microfractures within the dense till likely allowed slow movement of the water downward and to the northwest, under the prevailing ground water flow gradient (Figures 10 and 26), where it was then within a few feet of the first sand lens within the till that was identified in MW-I 07C where the highest tritium concentration to date is found at YNPS.
This release mechanism and flow path resulted in the distribution of tritium observed in the monitoring well network. Figure 25 illustrates the vertical proximity of the impacted sand lens 20
YA -REPT-00-0 10-05 in which MW-107C is completed at the northwest corner of the SFP (approximately 27 feet deep) and at the bottom of the fuel transfer chute under the northeast corner of the SFP (approximately 24.5 feet deep). The vertical separation between these two features is about 2.5 feet, and as shown in Figures 26, 28, and 30 (Hydrogeologic Cross-Sections A-A', C-C', and B-E'), the vertical flow potential in this area of the site is downward from the shallow aquifer and backfill to the deeper sand lenses.
The release documented in AOR 64-13 was reported in 1964. The tritium concentration in the ion exchange pit water at that time was a few million picocuries per liter. Table 10 notes in AOR 66-7 that in 1966 the SFP water contained 5.4E-03 microcuries per milliliter (5.4E+06 pCiIL) of tritium. The tritium concentration in the SFP and IXP water was similar. Therefore, it is likely that shortly after the release, the tritium lewls in both the shallow aquifer and deeper sand lenses were substantially higher than they are today. Reference 2 notes that the concentration of tritium measured in Sherman Spring in 1965 was about 2E+06 pCi/L.
The processes of natural attenuation, including dilution, dispersion, and radioactive decay, have significantly reduced the tritium levels over the intervening years. The levels are lower in the shallow aquifer because the higher hydraulic conductivity and more homogeneous flow domain in that umit have allowed more flushing and dilution compared to the deeper discontinuous sand lenses where flow is more restricted because the sands are interlayered within a virtually impermeable lodgement till.
5.1.3 Hydrogeologic Cross-Sections With Tritium Figures 26 through 30 are compilations of Hydrogeologic Cross-Sections A-A' through E-E' showing tritium concentrations and ground water levels during each of the four quarters of 2004.
Figure 2 shows the trace of each cross-section at ground surface on the YNPS site.
The cross-sections show tritium concentrations measured in screening samples collected in each sand lens encountered during drilling, as well as the results of tritium analyses of quarterly ground water samples. Comparison of the two csults indicates that where both screening samples and quarterly samples have been collected from the same sand lens, the quarterly sample results are generally comparable to or substantially less than the screening sample results. This relationship has been confirmed through analysis of several quarters of ground water samples, and is illustrated on the cross-sections. This relationship shows that the screening sample analyses are representative of the maximum concentration of tritium that is measured within a sand lens. This allows for reliable characterization of the tritium distribution in a series of sand lenses in which screening data are available without completing monitoring wells in each sand lens.
Figure 26 illustrates tritium impacts in sand lenses 30 to 100 feet deep on cross-section A-A' during each quarter of 2004. Tritium results are less concentrated in the area of MW-107C and D in March relative to the remaining quarters in 2004 because of the damage to these wells in early 2004 discussed above. This figure shows that impacts within the deeper sand lenses appear to originate adjacent to the SFP/IXP complex and extend downgradient in the direction of ground water flow inferred in Figure 11, to a point somewhere beyond the MW-104 well cluster.
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YA-REPT-00-010-05 cross-sections also illustrates the water level in each monitoring well and the inferred vertical flow potential that these water levels imply. Whether or not vertical flow occurs in the directions shown is dependent upon hydraulic connection between units. Figure 26 shows a consistent downward flow potential from the shallow aquifer to the water-bearing sands 30 to 100 feet deep during each quarter of 2004. This figure also shows a consistent upward flow from the bedrock to the deeper sand lenses in the central part of the site, near the vapor container. Conversely, the vertical flow potential is from the deeper sand lenses to the bedrock farther downgradient, in the vicinity of the MW-104 well cluster.
Figure 27 shows the tritium distribution and water levels on cross-section B-B' during the four quarters of 2004. Similar to the A-A' cross-sections, the B-B' sections also show a consistent downward flow potential from the shallow aquifer to the deeper sand lenses. One exception to this trend occurred in MW-105C in November. The B-B' sections illustrate that the downward flow potential from the deep sands to the bedrock that was identified in the MW-104 well cluster on the A-A' cross-sections (Figure 26) persist throughout all the wells on the B-B' cross-section.
This condition is reversed from what is observed farther upgradient, in the vicinity of the vapor container. Figure 2 shows that the MB' section is located downgradient from the RCA and is approximately normal to the predominant horizontal ground water flow direction.
Figures 28, 29, and 30 all show a consistent downward flow potential from the shallow aquifer to the deeper sand lenses during the four quarters of 2004 on cross-sections C-C', D-D' and RE'.
With one exception (MW- 100 on cross-section D-D') these figures also indicate an upward flow potential from the bedrock to the deeper sands in the central region of the site, but a reversal of this vertical flow potential in downgradient areas such as the vicinity of monitoring well clusters MW-105, MW- 108, and MW- 103.
5.1.4 Change in Tritium Concentration with Ground Water Level Figures 31 through 39 illustrate the trend in tritium concentrations and ground water levels measured immediately before sampling in eighteen monitoring wells in which tritium has been consistently detected. These data are provided for six rounds of quarterly sampling. With a maximum of six data points, it is difficult to definitively identify correlations between tritium concentrations and well water levels.
On the basis of the limited data available, both direct and inverse relationships between the two parameters can be postulated in wells for which data are plotted in Figures 31 through 39. These include wells completed in the shallow aquifer, in sand lenses 30 to 100 feet deep and in the bedrock. These figures show that no consistent relation between tritium and ground water level is apparent in any of the three units. No conclusions regarding the relation between the two parameters can yet be drawn due to the sparsity of data. Continued monitoring of tritium concentrations and water levels may reveal a relationship as more data are developed.
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YA -REPT-O0-O 10-05 5.1.5 Tritium Source Abatement The SFP/IXP complex, including its foundation, is currently being demolished. Radiologically impacted soil excavated adjacent to the foundation will be removed from the site. After the SFP/IXP complex and impacted soil is removed, the empty excavation will be surveyed, demonstrated to satisfy the radiological criteria for unrestricted use, then backfilled. Dewatering of the open excavation during demolition may facilitate removal of tritium-impacted ground water. When the area is restored, monitoring wells beneath the reactor support structure that were temporarily abandoned during demolition will be extended to the new site grade level.
Sampling of ground water from these and other monitoring wells in the vicinity of the IXP/SFP complex will resume after site restoration is complete, to demonstrate the effect of site remediation. YAEC anticipates that processes of natural attenuation, including dilution, dispersion and radioactive decay, will continue to reduce tritium concentrations observed in the ground water.
5.2 OtherRadionuclides in Ground Water A review of Table 9 indicates that no plant-related radionuclides other than tritium have been detected in ground water at YNPS. Low levels of virtually every radionuclide analyzed have been reported infrequently at concentrations near tie critical level (1.645 times the standard deviation of the total counts). However, these results are within the 5% of results expected to be statistically above the critical level but within the background distribution. A review of Table 9 reveals that the results are randomly distributed, both spatially and temporally.
Gross alpha radioactivity is detected occasionally in most wells, and gross beta activity is detected consistently in all wells. However, this radioactivity is naturally occurring in minerals found within the local soil and bedrock and is not related to operations at YNPS. Reference 14 provides a thorough discussion of the natural occurrence of radioactive materials and the relation between the concentrations of several naturally-occurring radionuclides in the U-238 and Th-232 decay chains that were measured in ground water samples from YNPS and the measured gross alpha and gross beta activity in those samples.
5.3 Non-Radioactive Constituentsin Ground Water Results of non-radiological analyses for ground water are summarized in the January 2005 Phase 11-Comprehensive Site Assessment Report prepared by Environmental Resources Management for YAEC (Reference 15). This report summarizes the results of ground water quality testing for oil and/or hazardous materials (OHM) that was conducted in 2003 and 2004. The results indicate that impacts to site ground water are generally limited to: 1) polychlorinated biphenyls (PCBs) at MW-5 and MW-107D which are attributed to particulates in ground water samples due to infiltration of storm water containing PCB paint chips into damaged well road boxes; 2) 1,1-dichloroethene (DCE) in MW-105C at concentrations less than 2 micrograms per liter (pg/L); and 3) bis 2-ethylhexylphthalate (DEHP) in MW-108B at 36 pg/L. These impacts are limited to isolated wells, are not laterally extensive or indicative of a plume. Additional 23
YA -REPT-00-0 10-05 characterization of OHM in site ground water will be conducted as part of the continued assessment and monitoring associated with site closure.
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YA -REPT-O0- 10-05 6.0 Summary and Conclusions Ground water investigations began at YNPS in 1977, with installation of the first monitoring well. Since then, a total of 65 additional monitoring wells have been installed. The most recent investigative phase occurred during the summer of 2004, when ten additional wells were installed to further characterize the hydrogeologic features at the site. This recently completed investigation followed a comprehensive episode of drilling that was completed in the previous year, which is reported in Reference 1.
Ground water has been sampled quarterly since July 2003 in all accessible monitoring wells.
Tritium continues to be the only plant-related radionuclide detected in ground water at YNPS. It is found within two hydrogeologic units at the site: the shallow stratified drift aquifer and within deeper thin discrete sand lenses that are interlayered within a very dense, virtually dry lodgement till.
The maximum concentration of tritium found in the shallow aquifer is about 5,000 pCi/L where detected. The deeper impacted zone is smaller in extent, but ranges in concentration from about 5,000 up to about 42,000 pCi/L where detected. The most concentrated portion of both the shallow and deeper impacted zones occurs adjacent to the SFP/IXP complex, which was the source of tritium as described earlier. The shallow aquifer is less concentrated, apparently because of its higher hydraulic conductivity and the greater number of aquifer volumes that have flushed through he shallow system compared to the lower hydraulic conductivity and more discontinuous, restricted flow domain within the deeper sand lenses.
Comparison of the results of screening ground water samples collected during drilling and quarterly ground water samples indicates that where both screening samples and quarterly samples have been collected from the same sand lens, the quarterly sample results are generally comparable to or substantially less than the screening sample results. This relationship shows that the screening sample analyses are a reliable estimate of the maximum concentration of tritium measured within a sand lens. This allows for reliable characterization of the tritium distribution in a series of sand lenses in which screening data are available without completing monitoring wells in each sand lens.
Since removal of all spent fuel from wet storage to dry storage in on-site vertical concrete casks during the summer of 2003, the SFP has been permanently drained and will shortly be demolished. Accordingly, the last source of tritium to the environment has been removed from YNPS.
The results of the 2004 drilling campaign, conducted on the margins of the presumed perimeter of the tritium contamination, confirm that monitoring well clusters MW-106, MW-108, and MW-109 bound the extent of tritium contamination to the north, west, and southwest of both the shallow and deeper zones of impact. Only minor concentrations of tritium (less than 1,000 pCi/L compared to the EPA MCL of 20,000 pCi/L) were detected in the shallow aquifer at MW-106 and in two of the deeper thin, discrete sand lenses at MW-109.
25
YA -REPT-O0-0 10-05 Correlation of the subsurface information developed during the 2003 and 2004 drilling programs has led to a slightly revised conceptual model of the sedimentary stratigraphy of the site. The lodgement till that lies under the shallow stratified drift aquifer is thicker and the top of the underlying glaciolacustrine sequence is deeper than originally thought. This interpretation implies that many of the thin, discrete sand lenses found at depths of about 30 to 100 feet are interlayered within the lodgement till rather than the glaciolacustrine sequence. The lodgement till is extremely dense, silty, and virtually dry. The interlayered sand lenses appear to be discontinuous and of limited extent. This stratigraphy has obvious implications for the transport of contaminants in ground water and suggests that the thin, discrete sand lenses do not provide a mechanism for flow of tritium over distances greater than a few hundred feet. It is also consistent with the occurrence of more concentrated tritium impacts within the deeper sand lenses where flow is more restricted, compared to the more homogeneous and higher hydraulic conductivity shallowaquifer.
Measurements of ground water levels in monitoring wells indicate a generally northwest flow direction in the shallow aquifer through the RCA, with a more westerly flow downgradient of the RCA, toward the Deerfield River. The highest water level generally occur during the second quarter of the year and the lowest in the fourth quarter. A downward vertical flow potential exists across the site, from the shallow aquifer to the water-bearing sands 30 to 100 feet deep.
The existence of a deeper zone of tritium impact within the 30 to 100-feet deep sand lenses is consistent with the downward flow potential. An upward flow potential exists from the bedrock to the deeper sands in the central part of the site, near the vapor container.
The relation between tritium concentrations and ground water levels has been evaluated. It appears that a complex set of conditions determines how tritium concentrations in ground water will vary as water levels change. The length of record for tritium concentrations and ground water level data is not sufficiently long to allow a meaningful predictive correlation between these two parameters to be developed at this time.
Monitoring of water levels in wells equipped with data-logging pressure transducers has identified apparent hydraulic connection between wells approximately 250 feet apart in the shallow aquifer. Hydraulic connection between some but not all discrete deeper sand lenses with a lateral separation of about 140 feet was also indicated. However, no connection was indicated between the shallow aquifer and the deeper sand lenses in the area studied. Similarly, no connection was indicted in MW-107C, the well with the highest concentration of tritium at the site, wvhen drilling in a sand lens at a location about 200 feet away. The lack of response in MW-107C suggests that the sand lens in which it is completed is isolated and of limited extent.
Response to drilling activities in the bedrock also indicates hydraulic connection between some wells in the bedrock with a lateral separation of about 250 feet, but no connection between the bedrock and the overlying deposits.
A data-logging rain gauge has been installed at YNPS. One month of data, from late September to late October 2004, was plotted on hydrographs of the water levels in several wells. These hydrographs show little correlation betveen precipitation events and change in ground water levels. The data available are limited and no conclusion regarding the relation between these parameters is reached at this time.
26
YA-REPT-00-O 10-05 Twenty-two monitoring wells drilled prior to 2003 were permanently abandoned during the summer and fall 2004. These wells were in areas of active demolition and were of less specific construction than those installed by the current rotosonic installation process. Abandonment of the wells eliminated potential aquifer contamination resulting from demolition-induced damage.
The need for replacement wells in one or more of these areas will be evaluated as the ground water investigation proceeds.
Gross beta activity is detected in all of the wells and gross alpha is detected in some of the wells.
This activity is associated with naturally-occurring radioactivity from the uranium and thorium decay series.
27
YA -REPT-OO-OI 0-05 7.0 Recommendations
- 1. Install multi-level clusters of monitoring wells at two locations shown as proposed wells MW-I10 and MW-Ill in Figure 40. Well screens should be completed at these two locations in the shallow aquifer, in any deeper saturated sand lenses with significant tritium concentration, and in the bedrock.
As evidenced in several figures throughout this report (Figures 22 through 26 and 28 through 30), the SFP/IXP complex is shown to be the primary source of plant-related impacts to ground water at YNPS. The saturated unconsolidated deposits beneath the location of the unplanned release documented in AOR 64-13, which occurred on the west side of the SFP/lXP complex in 1964, may contain the highest levels of tritium in the ground water. A second area that may contain elevated levels of tritium that may have contributed to the high levels measured in MW-107C, is at the northeast corner of the SFP/IXP. The proposed wells would target these areas.
The objectives of these additional wells would be to identify and characterize any discrete sand lenses 30 to 100 feet deep, to determine the interconnectivity between these discrete sand lenses and those already identified and the associated potential for contaminant transport, and to discover if tritium or other radionuclides exist at concentrations greater than those already identified. Wells completed in the shallow aquifer at these locations would replace recently abandoned wells CB-1 and MW-5, which consistently contained some of the highest tritium concentrations in the shallow aquifer. The proposed wells should be drilled as access to these areas becomes available and during the site restoration process.
- 2. Initiation of remedial measures to address tritium in ground water at YNPS is not recommended at this time.
The SFPIIXP structure will soon be excavated and removed. It is this structure, with its foundation within the top of the lodgment till, that was the primary source of tritium in both the shallow aquifer and the deeper sand lenses within the till. After the SFP/IXP complex and adjacent impacted soil is removed, the empty excavation will be surveyed, demonstrated to satisfy the radiological criteria for unrestricted use, then backfilled. Dewatering of the open excavation may remove impacted ground water in is vicinity. Continued sampling of ground water from monitoring wells in the vicinity of the IXP/SFP complex will demonstrate the effect of its removal. YAEC anticipates that the processes of natural attenuation, including dilution, dispersion, and radioactive decay, will continue to reduce tritium concentrations in the ground water. YAEC will determine future remedial actions based on continued data collection.
- 3. Ground water sampling should continue. with the addition of any new wells that may be drilled. Quarterly sampling should be Postponed until the fourth quarter of 2005 (depending upon accessibility) to allow for completion of demolition activities and site restoration.
Six consecutive quarters of ground water sampling and analysis since July 2003 has led to a better understanding of the concentrations of tritium in the shallow aquifer, in sand lenses within 28
YA -REPT-00-O 10-05 the lodgement till and in the bedrock aquifer, and their variability over time. The quarterly sampling data have also confirmed the absence of other plant-related radionuclides in site ground water. The results of continued sampling may improve the ability to identify trends in tritium concentration related to change in ground water level, and will demonstrate a net reduction in tritium levels over time.
Most of the structures at YNPS have been removed and the remaining demolition is focused on the reactor support structure and the SFP/IXP complex within the RCA. Approximately thirty-five percent of the remaining monitoring well network is located within the immediate vicinity of these structures and will remain inaccessible until demolition and site restoration are complete sometime in the third quarter of 2005. These wells are essential to the continuing ground water investigations at the site. Sampling of the limited number of accessible wells was recently completed during the first quarter of 2005 to provide baseline data for future sampling events.
- 4. Monitoring of ground water levels and precipitation with data-logging pressure transducers and a data-logging rain gauge should continue.
Continued monitoring through the use of these electronic instruments will provide data useful for correlating changes in the two parameters. These correlations may prove useful in demonstrating the degree of hydraulic connection between aquifers at YNPS.
- 5. Discontinuation of monitoring for gamma-emitting and hard-to-detect radionuclides in selected wells should be considered.
No gamma-emitting or hard-to-detect radionuclides have been detected in ground water by analysis of several rounds of quarterly samples. Analysis for these types of radionuclides can be discontinued for samples obtained from monitoring wells where their absence has been confirmed over two consecutive quarters. The continuing ground water monitoring data should be evaluated to ensure resumption of these analyses is not warranted.
29
YA-REPT-OO-O10-05 8.0 References Reference 1: YA-REPT-00-004-04; Hydrogeologic Report of 2003 Supplemental Investigation, March 15, 2004 Reference 2: DESD-TD-YR-02-001, Rev 1; Site Ground Water Data Collection for YNPS Decommissioning, Framatome ANP DE&S, February 2003 Reference 3: AP-8601, Rev 4; Ground and Well Water Monitoring Program for the Yankee Nuclear Power Station Site, October 2003 Reference 4: DP-9746; Use of Data Logging Pressure Transducers to Continuously Monitor Water Levels in Ground Water Monitoring Wells and Rainwise Rain Monitoring System Reference 5: Massachusetts Department of Environmental Protection Publication WSC-310-91; Standard Reference for Monitoring Wells, Section 4.6, Decommissioning of Monitoring Wells, November 1993 Reference 6: AP-8125; Procedure for Permanent Closure of Ground Water Monitoring Wells at YNPS Reference 7: DP-8602; Ground Water Monitoring Well Drilling and Completion Reference 8: AP-8122; Subsurface Soil Sampling and Monitoring Well Installation Reference 9: Geologic Map of the Rowe Quadrangle, Franklin and Berkshire Counties, Massachusetts, and Bennington and Windham Counties, Vermont, 1967, by A.H Chidester, N.L.
Hatch, Jr., P.H. Osberg, S.A. Norton, and J.H. Hartshorn, Map GQ-642, Department of the Interior, United States Geological Survey Reference 10: DP-9745; Ground Water Level Measurement and Sample Collection in Observation Wells Reference 11: YA-REPT-00-013-04; Interim Ground Water Monitoring Report for Yankee Nuclear Power Station, September 2004 Reference 12: Yankee Nuclear Power Station Historical Site Assessment, Rev 1, September 30, 2004 Reference 13: Yankee Nuclear Power Station license Termination Plan, Rev 1, November 19, 2004 Reference 14: YA-REPT-00-014-00; Data Assessment Report on NORM in YNPS Ground Water 30
YA-REPT-OO-O 10-05 Reference 15: Phase II - Comprehensive Site Assessment Report, Yankee Nuclear Power Station, Environmental Resources Management, January 28, 2005 31
THIS PAGE IS AN OVERSIZED DRAWING OR FIGURE THAT CAN BE VIEWED AT THE RECORD TITLED:
FIGURE 10 "Ground Water Elevations in the Shallow Aquifer (less than 25 feet deep)
During 2004 Revision: 1, March 2005" WITHIN THIS PACIKAGE OR BY SEARCHING USING D-O1
THIS PAGE IS AN OVERSIZED DRAVWING OR FIGURE THAT CAN BE VIEWED AT THE RECORD TITLED:
FIGURE 11 "Ground Water Elevations in Sands 30 to 100 Feet Deep During 20041" Revision: 1, March2005 WITHIN THIS PACIKAGE OR BY SEARCHING USING D-02
THIS PAGE IS AN OVERSIZED DRAWING OR FIGURE THAT CAN BE VIEWED AT THE RECORD TITLED:
FIGURE 12.
"Ground Water Elevations in-the Bedrock Aquifer During 2004?
Revision: 1, March 2005
.WITHIN THIS PACIKAGE OR
'BY SEARCHING USING D-03
Figure 13 Water Level Elevation in CB-2 1105.7 1.2 1105.65 . . , , ,;-,., .,--. -I - A. and.. .. u n 7 1
.' _ . - - :. .- ' "- ' . - ' - ' /g '
C 1105.6 2n I ^o ", ," - ,, -- ,, ,, ,, ,, i,-, 'I -0.8 *'c T
1105.55 f :- - i; -I a~c 0
0 1105.5 9 0.L 0
> 1105.45
- 1 0.42:
3:1105.4
. . . . . I \ I - - - I . . . III c 1105.35 I 1I-iI 17O IF --------- 4 I
-0.2 1105.3 - H,-, , , H- ------ . _ I I w rs 1 _ . , l 0
9/24/2004 0:00 9/2912004 0:00 10/4/2004 0:00 10/9/2004 0:00 10/1412004 0:00 10/19/20040:00 Time Elevation of Water Level in CB-6 1098.9 1098.8 1
U, 1098.7 0
E 0.8 Ic 0 - - X'"-
-'- '- ' - -' '- ' - c- C a 1098.6 I
C C
____IH___I________
0 l 1098.5 - 0.6 2 2
w
-z a> 1098.4 IL
-0.4 a
B 1098.3 II.
r0.2 1098.2 1098.1 -n . n u 9/24/2004 0:00 9/29/2004 0:00 10/4/2004 0:00 10/9/2004 0:00 10/14/2004 0:00 10/19/2004 0:00 Time
Figure 14 Elevation of water In MW-1 03A In Feet (MSL) 10392.2_ 1.2 1092.1 1092 - s-- I I
> 1091.9 -
1091.9 N I nn 1091.8 _ ." II......... a 0
- 0.6 Sf cz 1091.7 -
2 1091.6 --- *0.4 °
-' ' '`.. , ,
1091.5
.02 1091.4 I-1091.3
.n: A 9124/2004 0:00 9129R2004 0:00 10/4/2004 0:00 10/9/2004 0:00 10114120040:00 10119/2004 0:00 Time Elevation of Water In MW-103B In Feet (MSL) 1053.4 12 1053.2 -A '- ' ,'
1053 1052.8
- r 0.8I 2 1052.6 c 1052.4 a I0 I I - . . ,-1.1'W *0.6 .2-
> 1052.2 C.
_ _-_- , _Ir -_
t 1052 0.
1051.8 --- --
, %L Y
rT k' -
I WN. 1- Irk I
, . . I
.OA2 IV 1051.6 -02 1051 A n. .-.
1051.2
- n .,M 9/24R20i D4 0:00 9R2912004 0:00 10/4/2004 0:00 10/9/2004 0:00 10/14/20040:00 10/19/2004 0:00 Time
Figure 15 Elevation of Water In MW- 104B In Feet (MSL)
- 0.8 =
-z 0 c
0 0.6 "
a, e,
w
- 0.4 9/2412004 0:00 9/29/2004 0:00 10/4/20040:00 10/9/20040:00 10/1412004 0:00 10/19/20040:00 Time Elevation of water In MW- 104C In Feet (MSL) 1079.6 ..- 1.2
.1 110 79 -
107924 Al
. __ _ _ _ _ _ _ _ _ _ ._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _I _
5 . -I Ib
'I)
.&NY' I GEL l -0.8 s L 1079
.r.Ir V-I-
c 0
a, 1078.8 L
.I I iv 0*%7
- 0.6 .'
CL
'a 1078.6
- 0.4 a 1078.4 I .
It
-0.2 1078.2 1078
. n--- _
[I . . . ., .. l l WrI !1 - _ 11 l 0
91241201D40:00 912912004 0:00 10/4/2004 0:00 10/912004 0:00 10/1412004 0:00 10/1 9/2004 0:00 Time
Figure 16 Elevation of Water Level In MW.106A 1083.9 1.2 1083.8 N . . . I.
1083.7
-I - : -
S' 1083.6 T 0.8 .!
j 1083.5
. 1083.4 0.6 _
a i 1083.3 4Z 4,
-ZJ 1083.2 _ ŽX, 0.4 >
wU 0.'
0a i 1083.1 1083 -0.2 1082.9 n1 nH I 1082.8 .t . _0 912412,004 0:00 929/004 0:00 101412004 0:00 1019/2004 0:00 1011412004 0:00 10/19/20040:00 Time Water Level Elevation in MW-109C 1111.4 1.2 1111.2
-a 1111 U)
M 0.8 M0
.u 1110.8 C: C~
> 1110.6 0.6
'U.
a,
-J a.
0> 111 0.4 0.4 0.
3 1110.2 rl0.2 1110 1109.8 n Cll ~ - I 1 1 ^0 9/24/2 004 0:00 9129/2004 0:00 10/412004 0:00 10/912004 0:00 10/14/2004 0:00 10/19/2004 0:00 Time
Figure 18 Elevation of Water Level In CB-1 (screened 15 to 25 feet In the shallow aquifer)
U)a a
0
-J S
1116 1 II6I 72312004 7124204 7126/2004 71281 71302004 8/112004 8r212004 8£412004 8t612004 8r812004 8/102O04 8/1112004 8113t2004 8/15/2004 0:00 19:12 1424 9:36 4:48 0:00 19:12 14:24 9:36 4A8 0:00 19:12 14:24 9:36 rM Elevation of Water Level In MW-102A (screened 33 to 38 feet In sand aquifer) 1117.
1117.:
1117.1 Pressure grout 7 5/8- casing
/at 65 feet in MW-109 2 1116.!
!E1116.1 M
0 1116.5 . -
LA
.x '-V'i. j
.1 Adv7 Ad. n7
- casinglo 45 5t8 feetin l II. -
-l 1116.3MW-109 Sample ground U water at 45 to 53 j, . ,.- eet in MW-1uUY Development of Mw- 1 1 109C screenedfrom *1 I 1115.9 I I .- 49 to 54 feet tt 1115.7 1115.5 712012004 7122t2004 7/2412004 7/2612004 712812004 712912004 7/3112004 81212004 8/412004 8/6/2004 8/7t2004 8/9/2004 8t1112004 8/1312004 8115t2004 811612004 19:12 14:24 9:36 4:48 0:00 19:12 14:24 9:36 4:48 0:00 19:12 14:24 9:36 4:48 0:00 19:12 Time
Figure 19 Elevation of Water Level In MW.102B (screened from 120 to 130 feet In bedrock) 0
~1 0R 1098 1 I I I I ,
7/232004 7/24/2004 7/26/2004 7/2/2004 7/30/2004 /1/2004 8M2/04 4/2004 s86/2004 8/8/2004 6/10004 811/2004 8/13N004 /15/2004 0:00 19:12 14:24 9:36 4:48 0:00 19:12 14:24 9:36 4:48 0:00 19:12 14:24 9:36 Time Elevation of Water Level In MW-102C (screened 94 to 99 feet In sand aquifer) 1091.2 1091 1090.8 e 1090.6
.2
° 1090.4 C~
P 1090.2 Drilled Into sand at 1089.8 at 156 to 159 feet In MW.109 j 1089.6 1089.4 1089.2 1089 72312004 71242oo4 7612004 7812004 7012004 8112004 812004 814n004 81612004 8812004 sno o004 811112004 8131004 8115004 0:00 19:12 14:24 9:36 4:48 0:00 19:12 14:24 9:36 4:48 0:00 19:12 14:24 9:36 Time
Figure 20 Elevation of Water Level In MW-103B (screened 285 to 295 feet In bedrock)
E Approximately 24-hour 0cycle due to earth tides 1052
> 1051.5
-lV 913/04 9/4104 9/6104 9/8104 9/10/04 9/12/04 9/13/04 9/15104 9/17/04 9/19104 9/21/04 9122/04 9/24104 0:00 19:12 14:24 9:36 4:48 0:00 19:12 14:24 9:36 4:48 0:00 19:12 14:24 Time Elevation of Water Level In MW-103C (screened 115 to 125 feet In silty sand) 1076-1075 -
1074-1073 U,
J 1072 -t f
=0 1071 1070 Slow recovery of the water level in e4 Aa well screened in a zone of very low hydraulic conductivity after B 1068 -
1067 - 0-1067 -
1066 -
1065 9/3/04 914104 9/6/04 9/8/04 9/10/04 9/12/04 9/13/04 9115/04 9117/04 9/19104 9/21/04 9/22/04 9/24/04 0:00 19:12 14:24 9:36 4:48 0:00 19:12 14:24 9:36 4:48 0:00 19:12 14:24 Time
Figure 21 Elevation of Water Level In MW-104B (screened 184 to 194 feet in bedrock)
-.5 (ID C
.2
'U
-Z S
1055.5 1 , -l 71212004 0:00 717/2004 0:00 7/12/2004 0:00 711712004 0:00 7/22/2004 0:00 7/27/2004 0:0 Time Elevation of Water Level in MW-1 OSC (screened 27 to 37 feet In sand) 1108.7
-I 1108.5 - -
t.2 c, '1108.4 0
S 1108.3 z
0I 1108.2 1:,,.
. JIfr i
. I 11 1108.1 ; w~ rr I . *;
- I
. i 110W -
712312004 7/2412004 712612004 7128/2004 7/30/2004 811/2004 8/2/2004 81412004 8/612004 81812004 8/10/2004 81/12004 8113/2004 8/15/2004 0:00 19:12 14:24 9:36 4:48 0:00 19:12 14:24 9:36 4:48 0:00 19:12 14:24 9:36 Time
THIS PAGE IS AN OVERSIZED DRAWING OR
-FIGURE THAT CAN BE VIEWED AT THE RECORD TITLED:
FIGURE 22..-
"Tritium in the Shallow Aquifer (less than 25 feet deep) During 2'004" :
Revision: 1, March 2005 WITHIN THIS PACIKAGE OR BY SEARCHING USING D-04
THIS PAGE IS AN OVERSIZED DRAWING OR
- FIGURE THAT CAN BE VIEWED AT ITHE RECORD TITLED:
FIGURE 23 "Tritium in Sands 30-to 100 Feet Deep During 2004" Revision: 1,'March 2005 WVITHIN THIIS PACKCAGE OR BY SEARCHING USING D-05
THIS PAGE IS AN OVERSIZED DRAWING OR FIGURE THAT CAN BE VIEWED AT THE RECORD TITLED:
FIGURE 26 Hydrogeologic Cross-Sections A-A' with Tritium During 2004" Revision: 1, March 2005 WITHIN THIS PACIKAGE OR BY SEARCHING USING Dn06
THIS PAGE IS AN OVERSIZED DRAWING OR FIGURE THAT CAN BE VIEWED AT THE RECORD TITLED:
FIGURE 2 7 "Hydrogeologic Cross-Sections B-B' with Tritium During 2004" Revision: -1, March 2005 WITHIN THIS PACIKAGE OR SEARCHING BY USING D-07
- r .I THIS PAGE IS AN OVERSIZED DRAWING OR FIGURE THAT CAN BE VIEWED AT.
THE RECORD TITLED:
FIGURE 28 "Hydrogeologic Cross-Sections C-C' with Tritium During 2004" Revision: 1, March 2005 WITHIN THIS PACIKAGE OR BY SEARCHING USING D-08
THIS PAGE IS AN OVERSIZED DRAWING OR FIGURE THAT CAN BE VIEWED AT THE RECORD TITLED:
FIGURE 29 Hydrogeologic Cross-Sections DWD' with Tritium During 2004 Revision: 1, March 2005 WITHIN THIS PACIKAGE OR BY SEARCHING USING D-09
THIS PAGE IS AN OVERSIZED DRAWING OR FIGURE THAT CAN BE VIEWED AT THE RECORD TITLED:
FIGURE 30 Hydrogeologic Cross-Sections E-E' Revision: 1, March 2005 WITHIN THIS PACKAGE OR BY SEARCHING USING DmIO
Figure 31 Tritium and Water Level Elevation Vs Time in B-1 Time (annual quarters)
Aug '03 Nov'03 Feb'04 May'04 400 1112.00 600 1111.00 1110.00 800-
-J 1109.00 .2 E 1,000 V
I--
1108.00 LUo z
1,200 -
1107.00 -n 1,400 -
1106.00 1,600 - 1105.00 I T .. I Tritium and Water Level Elevation Vs Time in CB-1 Time (annual quarters)
Aua '03 Nov'03 Feb'04 May ' 04 Aug'04 Nov'04 500 1119.00 700 1118.00 900 1117.00 1,100 E
- 2 0 1,300 1116.00 0 E
1,500 I-- 1115.00-i 1,700 1114.00 B 1,900 C,)i-1113.00 2,100 2,300 1112.00 1-4-Tritium 4--Water Level Elevation
011111 Figure 32 Tritium and Water Level Elevation Vs Time in CB-2 1,400 '1108.00 1,200 '1107.00
'1106.00 ,,,
1,000 E 0
2
'1105.00 c 800 0
._ w I-1104.00 *s 600 0
'1103.00 3 400
'1102.00 200 .00 Aug'03 Nov ' 03 Feb'04 May'04 Aug'04 Nov'04 Time (annual quarters) 1-+-Tritium -U-Water Level Elevation l Tritium and Water Level Elevation Vs Time in CB-6 1099.00 A ' 1098.50 600 Y-A I I - - - I-500 I AI E 1098.00 JD C.)
E 400 i \ 0 I-300 N 1097.50 >
w IS a:
200 1097.00 100 0 1096.50 Aug '03 Nov '03 Feb '04 May'04 Aug'04 Nov '04 9
Time (annual quarter)
I--*-Tritium -*UWaterLevel Eievatio]
C_ "L7_g
Figure 33 Tritium and Water Level Elevation Vs Time in CB-9 3,000
- 1119.00 2,500 1118.00 1117.00 go 2,000 2
-J 1116.00 C E t5soo' la 1115.00 Z S
1,000*
1114.00 ¢ 500 1113.00 1112.00 Aug'03 Nov'03 Feb ' 04 May'04 Aug ' 04 Nov'04 Time (annual quarter) i+Tritium U&WaterLevelElevation l Tritium and Water Level Elevation Vs Time in CB-10 1,300 - 1126.00 1,200 i- 1125.50 0
1,100 1 1125.00 E
- r 0
. 2 E 1,000 . 1124,50
- i
-I 900 1124.00 a 800 1123.50 700 -1123.00 Aug'03 Nov ' 03 Feb'04 May'04 Aug'04 Nov'04 Time (annual quarter) c 7'Tritium -U-Water Level Elevation
Figure 34 Tritium and Water Level Elevation Vs Time in CB-1 1A 1,800 1127.00 1,600 1126.80 1,400 1126.60 r
1,200 E 2'
-J 1126.40 U 1,000 a' 0 E 1126.20 >
_ 800 1126.00 -J 600 400 1125.80 .
200 1125.60 1125.40 Aug'03 Nov'03 Feb ' 04 May'04 Aug ' 04 Nov'04 Time (annual quarter) 1-9Tritium "U'WaterLevelElevation l Tritium and Water Level Elevation Vs Time in CW-6 3w 1112.50 Xid-'00St;gXt' Lf~Ap 0t t0:f0:0dtfDk ? :i 0 .
-1112.00 X , /r aJ U
] ::l: - 7_O -
-1111.50 E .
/
0
=
-S 0._
E A 7"A. -1111.00 >
w _
I 100- a / \: - - \
100 -/ \ / ; \ I -1110.50 S 50- / { \
-1110.00 Aug '03 Nov'03 Feb ' 04 May ' 04 I
V Aug'04 Nov ' 04 1109.50 Time (annual quarter) l+-Tritium _'Water Level Elevation I _
ClLL
Figure 35 Tritium and Water Level Elevation Vs Time in CW-7 2,500 1116.00 1114.00 2,000 as 1112.00 E
^7 1,500
-J
- 0. 0 E 1110.00 2 lU
': 1,000 1108.00 N 500 1106.00 0 1104.00 Aug'03 Nov'03 Feb'04 May'04 Aug'04 Nov'04 Time (annual quarter) l4-Tritium -_-WaterLevel Elevation Tritium and Water Level Elevation Vs Time in CW-11 Time (annual quarter)
Aug '03 Nov'03 Feb'04 May'04 Aug ' 04 Nov'04 1,.Un.no . .U . 1129.00 2,000- -1128.50 2,500 a 1128.00 c (3 3,000 0
.2 3,500L I-4, ~IT~I~~I~ 1127.50 4,000 4,500 1127.00 5,000 5,500 1126.50 Tritium - Water Level Elevation
Figure 36 Tritium and Water Level Elevation Vs Time in MW-2 2,000 1126.00 1125.00 1,800
'1124.00 1,600 E
'1123.00 ,e 0
E 1400- '1122.00 '
., e 1121.00 1,200-e 11120.00 1,000 -
1119.00 800- 1118.00 Aug'03 Nov'03 Feb'04 May'04 Aug'04 Nov'04 Time (annual quarter)
Tritium -Water Level Elevation I Tritium and Water Level Elevation Vs Time in MW-5 5,000 - 1123.00 4,500 - ';
1122.00 4,000 -
3,500 -
1121.00 E a3,000 --
1120.00 3 Ft 2,000 -
1119.00 ,
1,500 1,000 1118.00 500 U l 1117.00 Aug'03 Nov'03 Feb'04 May'04 Aug'04 Nov'04 Time (annual quarter)
-'-Tritium '-,-Water Level Elevation
Figure 37 Tritium and Water Level Elevation Vs Time in MW-102A 5,000 1114.00 4,800 1113.00 4,600- 1112.00 E J
- 0. 0 E 4,400 - -1 1111.00 a I-4,200 - I 1110.00 -3 4,000 - 1109.00 3,800 - 1108.00 Aug'03 Nov'03 Feb'04 May'04 Aug'04 Nov'04 Time (annual quarter)
+-4-Tritium -- Water Level Elevation Tritium and Water Level Elevation Vs Time in MW-102C 8,000 1105.00 7,000 1100.00 6,000 5,000 1095.00 .
0.
E 4,000 .. ._
I-3,000 1090.00 2,000 1085.00 1,000 1080.00 Aug'03 Nov'03 Feb'04 May'04 Aug'04 Nov'04 Time (annual quarter) 1-4-Tritium '-Water Level Elevation l Cl)
Figure 38 Tritium and Water Level Elevation Vs Time in MW-105B 5,400 1108.00 1107.50 5,200 1107.00 5,000 1106.50 a
' 4,800 c
- 0. 1106.00 ._
E
- 4,600 1105.50 0
1105.00 '
4,400 1104.50 4,200 1104.0 4,000 1103.50 Aug'03 Nov'03 Feb'04 May'04 Aug'04 Nov'04 Time (annual quarter) l-- Tritium -- WaterLevel Elevatonl Tritium and Water Level Elevation Vs Time in MW-105C Time (annual quarter)
Aug ' 03 Nov'03 Feb'04 May'04 Aug'04 Nov '04 0
1120.00 500 1118.00 1,000 1116.00 1,500 1114.00 1112.00 -
a 2,000 U
D. 1110.00 .
E 2,500 1108.00 Lu I- 3,000 *1 1106.00 's 3,500
. 1104.00 4,000 1102.00 4,500 1100.00 5,000 1098.00 14Tritium Water Level Elevation
Figure 39 Tritium and Water Level Elevation Vs Time in MW-107C 60,000 1114.50 1114.00 50,000 1113.50 40,000 1113.00 E 2
a 1112.50 a
.2 E 30,000 1112.00
'a
-i 20,000 1111.50 j 1111.00 10,000' 1110.50 0-1110.00 Aug'03 Nov'03 Feb'04 May'04 Aug'04 Nov ' 04 Time (annual quarter) 1-4-Tritiun Water LevelElevai Tritium and Water Level Elevation Vs Time in MW-107D 14,000 1100.00 12,000 1095.00 10,000 7N 1090.00 c 1085.00 o 2 0 Rnnn 4 C')
- a. 1080.00 ra E
a) 4000 x w. .d .M, 1075.00 '
-1065.00 2,000
- 1060.00 0 I I 1055.00 Aug '03 Nov ' 03 Feb'04 May'04 Aug '04 Nov '04 Time (annual quarter)
+-6Tritium-UWater Level Elevation
( C Table 1 Summary of Completion Details for Monitoring Wells Drilled in '03 and '04 Yankee Nuclear Power Station, Rowe, Massachusetts Cement Well 8-Inch Total Well Grout Well Screen Steel Depth Screen Well Screen Geologic Unit Screen Sand Diameter of Bentonite Seal Inside Well Slot Casing Date Drilled Length Interval at Screen Pack Interval Sand Pack Seal Interval Dia. Wall Size Interva Well No. Completed (feet) (feet) (ft bg) Interval (ft bg) (inches) Interval (ft bg) (ft bg) (in.) (PVC) (in.) (ft bg)
MW-100A 5-Aug-03 20 10 10 to 20 Stratified Drift 8.3 to 20 5.5 6.0 to 8.3 0 to 6.0 2.0 Schd 40 0.010 N/A MW-100B 4-Aug-03 43 10 32.9 to 42.9 Bedrock 31.0 to 43 4.625 28.0 to 31.0 0 to 28.0 2.0 Schd 40 0.010 N/A MW-101B 13-Aug-03 156 10 142 to 152 Bedrock 140.2 to 156 4.625 138.5 to 140.2 0 to 138.5 2.25 Schd 80 0.010 0 to 11.25 MW-101C 15-Aug-03 99 5 94 to 99 Sand and Silt 92.1 to 99 5.5 90.0 to 92.1 0 to 90.0 2.0 Schd 40 0.010 0 to 15.3 MW-102A 31-Jul-03 39 5 33 to 38 Sand and Silt 31.0 to 39 5.5 29.0 to 31.0 0 to 29.0 2.0 Schd 40 0.010 N/A MW-102B 24-Jul-03 131.5 10 120.2 to 130.2 Bedrock 117.9 to 131.5 4.625 116.0 to 117.9 0 to 116.0 2.0 Schd 40 0.010 0 to 15 MW-102C 29-Jul-03 99 5 94 to 99 Sand & Gravel 92.4 to 99 5.5 90.8 to 92.4 0 to 90.8 2.0 Schd 40 0.010 0 to 14.5 MW-103A 17-Jul-03 26 10 15 to 25 Stratified Drift 13 to 26 5.5 11 to 13 Oto 11 2.0 Schd 40 0.010 N/A MW-103B 10-Jul-03 295 10 284.5 to 294.5 Bedrock 282 to 295 4.625 279 to 282 0 to 279 2.25 Schd 80 0.010 0 to 30 Laminated Clay MW-103C 16-Jul-03 125 10 115 to 125 & Sand 112.3 to 125 5.5 110.5 to 112.3 0 to 110.5 2.0 Schd 40 0.010 N/A 5.5:
182'to 187' 4.625:
MW-104B 3-Sep-03 194.5 10 184 to 194 Bedrock 182 to 194.5 187'to 194.5' 180 to 182 0 to 180 2.25 Schd 80 0.010 0 to 25 Laminated Silt MW-104C 11-Sep-03 99 10 87 to 97 & Sand 84.8 to 99 7.625 82.8 to 84.8 0 to 82.8 2.25 Schd 80 0.010 N/A MW-105B 20-Aug-03 75 10 64 to 74 Bedrock 61.8 to 75 4.625 59.6 to 61.8 0 to 59.6 2.0 Schd 40 0.010 0 to 25 MW-105C '21-Aug-03 45 10 27 to 37 Silt and Sand 25.1 to 37 5.5 23.1 to 25.1 0 to 23.1 2.0 Schd 40 0.010 N/A MW-106A 30-Aug-04 22 10 12 to 22 Sand & Gravel 9.5 to 22 7.625 7.5 to 9.5 0 to 7.5 2.0 Schd 40 0.010 N/A MW-106B 27-Aug-04 265 10 251 to 261 Bedrock 249 to 265 4.625 230 to 249 0 to 230 2.25 Schd 80 0.010 N/A MW-106C 8-Sep-04 95 5 90 to 95 Sand and Silt 86.5 to 95 5.5 80 to 86.5 0 to 80 2.0 Schd 40 0.010 0 to 25 MW-106D 14-Sep-04 155 10 144 to 154 Sand and Silt 142 to 154 5.5 132 to 142 0 to 132 2.25 Schd 80 0.010 0 to 25 MW-107B 17-Sep-03 110 10 99.7 to 109.7 Bedrock 97.8 to 109.7 4.625 96.0 to 97.8 0 to 96.0 2.25 Schd 80 0.010 0 to 12.5 MW-107C 19-Sep-03 32 5 27 to 32 Sand and Silt 25 to 32 5.5 23 to 25 0 to 23 2.0 Schd 40 0.010 N/A MW-107D 24-Sep-03 81.2 5 75 to 80 Sand and Silt 73 to 81.2 5.5 71.1 to 73 0 to 71.1 2.0 Schd 40 0.010 N/A MW-108A 17-Jul-04 25 10 14.7 to 24.7 Sand and Silt 10 to 25 5.5 6.1 to 10 0 to 6.1 2.0 Schd 40 0.010 N/A MW-108B 16-Jul-04 215 10 205 to 215 Bedrock 202.5 to 215 5.5 197.5 to 202.5 0 to 197.5 2.25 Schd 80 0.010 0 to 26 MW-108C 8-Jul-04 170 5 60 to 65 Silty fine Sand 57 to 67 7.625 51-57&67-170 0 to 51 2.0 Schd 40 0.010 0 to 26 MW-109B 2-Aug-04 190 10 180 to 190 Bedrock 177.5 to 190 4.625 175.5 to 177.5 0 to 175.5 2.25 Schd 80 0.010 0 to 20 MW-109C 9-Aug-04 55 5 49 to 54 Sand with Silt 46.8 to 55 5.5 42.5 to 46.8 0 to 42.5 2.0 Schd 40 0.010 N/A MW-109D 6-Aug-04 113 5 88.7 to 93.7 Sand & Gravel 86 to95 l 5.5 83-86&95-113 0 to 83 2.0 Schd 40 0.010 Oto21 Notes: tt bg=teet below grade; NMA=not applicable; 9chd=schecdule; all wells completed with # O (medium) sand pack YA-REPT-00-01 0-05
Table 2 Tritium Concentrations in Ground Water During Monitoring Well Drilling Yankee Nuclear Power Station Rowe, Massachusetts Well No. Sample ID Depth (ft bg) Tritium (pCi/L)
MW-100A n/a i MW-1OOB GW-1 15-16 <MDA GW-2 33-43 <MDA MW-101B GW-1 3.5-6 <MDA GW-2 36.5-38.5 <MDA GW-3 45-49 <MDA GW4 77.5-81.5 <MDA
- GW-5 85-95 <MDA GW-6 109-117 <MDA GW-7 122-129 <MDA GW-8 142-152 <MDA MW-101 C GW-1 94-99 <MDA MW-102A n/a MW-102B GW-1 8-10 4,600 GW-2 30-33 8,700 GW-3 38-45 <MDA GW4 95-98 14,800 GW-5 120-130 <MDA MW-102C GW-1 41-41.5 6,450 MW-103A n/a MW-103B GW-1 19-23 <MDA GW-2 59-65 <MDA GW-3 105-125 1,900 GW-4 145-155 <MDA GW-5 165-170 <MDA GW-6 170-1 85 <MDA
_ GW-7 270-275 <MDA GW-8 285-295 <MDA MW-103C GW-1 55-65 <MDA MW-104B GW-1 12-17.5 <MDA GW-2 38-44 6,300 GW-3 95-97 7,290
_ GW-4 115-118 6,170 GW-5 135-139 4,810 GW-6 163.5-175 8,770 GW-7 184-194 <MDA MW-104C n/a MW-105B GW-1 17.5-18.5 <MDA GW-2 39-44 7,720 GW-3 64-74 6,030 MW-105C n/a MW-106A n/a YA-REPT-00-010-05
Table 2 Tritium Concentrations in Ground Water During Monitoring Well Drilling Yankee Nuclear Power Station Rowe, Massachusetts Well No. Sample ID Depth (ft bg) Tritium (pCi/L)
MW-106B GW-1 10-15 650 GW-2 86-93 <300 GW-3 115-128 <300 GW-4 130-135 <300 GW-5 141-153 <300 GW-6 165-175 <300 GW-7 251-261 <300 MW-106C n/a MW-106D n/a .
MW-107B GW-1 27-29 44.100 GW-2 41-45 35,300 GW-3 77.5-81 9,150 GW-4 90-91 <MDA
. GW-5 100-110 <MDA MW-107C GW-1 5-7 <MDA GW-2 27-32 48,000 MW-107D n/a MW-108A n/a MW-108C GW-1 7-24 <300 GW-2 61-63 <300 GW-3 95-105 <300 GW-4 149-155 <300 MW-108B GW-4A 142-146 <300 GW-4B 146-165 <300 GW-5 166-175 <300 GW-6 205-215 <300 MW-109A n/a MW-109B GW-1 12-15 <300 GW-2 51-52 <300 GW-3 90-99 <300 GW-4 125-130 460 GW-5 156-159 880 GW-6 180-190 <300 MW-109D n/a K>
YA-REPT-00-01 0-05
( (
Table 3 Yankee Nuclear Power Station Summary Results of Analysis of Screening Ground Water Samples for VOCs (Unvalidated Data)
Notes:
- 1. Values in Parentheses are sample detection limits.
- 2. Blank cells indicate non-detects
- 3. Qualifiers:
J - Estimated value B - blank contamination YA REF'T.0041045 Gradient CORPORATION
( (
Table 3 Yankee Nuclear Power Station Summary Results of Analysis of Screening Ground Water Samples for VOCs (Unvalidated Data)
Notes:
- 1. Values in Parentheses are sample detection limits.
- 2. Blank cells indicate non-detects
- 3. Qualifiers:
J - Estimated value B - blank contamination YA.REPT-00 010 05 Gradient CORPORATION
( C Table 3 Yankee Nuclear Power Station Summary Results of Analysis of Screening Ground Water Samples for VOCs (Unvalidated Data)
MW-109B GW-3 28-Jul-04 GW-PreDev ___g/L
\IW-109B- GW-6 02-Aug-04 GW-PreDev _ ig/L . 0.31(1) J 0.51(5) J
\IW-109D GW-1 05-Aug-04 GW-PreDev _ pg/L MW-109D GW-2 05-Aug-04 GW-PreDev pg/L Notes:
- 1. Values in Parentheses are sample detection limits.
- 2. Blank cells indicate non-detects
- 3. Qualifiers:
I - Estimated value B - blank contamination YA-REPT40 010-05 Gradient CORPORATION
Table 4 Summary of Soil Sample Screening Data: Gamma Activity Yankee Nuclear Power Station Rowe, Massachusetts Sample Co-60 Cs-134 Cs-137 Location SampleDate/Time Depth (ft) Soil Characteristics (pCI/g)' (pcilg)2 (pCIIg)3 Fill consisting of sand, brown, fine to med. and fine to coarse sub round MW 108B 6/23/2004 10:00 0-5 gravel. Some cobbles, some silt, dry, loose. <MDA <MDA <MDA Sand - fine to coarse, brown, coarse gravel, some silt, wet @ 7'. Unsorted loose (5-7). Sand, brown, fine, some silt, trace fine gravel, rounded, wet, 6/23/2004 10:05 5-10 unstorted, loose (7-10). <MDA <MDA <MDA Sand, fine, gray-green and gravel fine to coarse. Some silt, wet, unsorted, 6/23/2004 10:15 10-15 med dense. <MDA <MDA <MDA Silt dark brown, vf sand, wet, trace fine to medium subangular gravel wet, 6/23/2004 10:20 15-20 unsorted, loose. Gray-green (18-20) <MDA <MDA <MDA Med to very coarse sand, brown and fine to coarse rounded gravel. Trace silt, wet, poorly sorted, med dense(20-21). Silt, gray-brown and vf sand, few cobbles, moist. Unsorted, dense(21-24). Till brown, very dense, dry, consisting 6/2312004 10:30 20-25 of silt, some fine to coarse sand, few cobbles, unsorted(24-25). <MDA <MDA <MDA Silt, olive-brown, and vf sand, v dense, dry, unsorted. Some angular 6/25/2004 8:35 25-29 decomposed schist fragments-med to coarse gravel size <MDA <MDA <MDA 6/25/2004 8:55 29-32 Same as above(29-30). Boulder, gray, albite gneiss, pulverized, dry(30-32). <MDA <MDA <MDA Silt, olive brown and f. sand. Very dense, dry, unsorted, some angular f to 6/25/2004 9:05 32-38 med gravel. 35-36.5 - Slightly more sandy. <MDA <MDA <MDA Silt, olive brown with vf sand, very dense, and f to coarse. Angular gravel, 6/25/2004 9:30 38-41 unsorted. Few quartz cobbles, and garnetiferous schist fragments. <MDA <MDA <MDA 6/25/2004 9:50 41-45 Same as above. <MDA <MDA <MDA Silt, olive and fine sand. Very dense, damp, some f to c angular gravel, 6/25/2004 10:40 45-49 unsorted(45-48). Slightly more sand at top, wet (48-49). <MDA <MDA <MDA Silt olive with vf sand, some f to m subangular gravel, very dense, unsorted, 6/25/2004 11:20 49-53 damp(49-5 1). Dry with few chlorite schist and albite gneiss cobbles(51-53). <MDA <MDA EMDA YA-REPT-00-010-05
( ( (
Table 4 Summary of Soil Sample Screening Data: Gamma Activity Yankee Nuclear Power Station Rowe, Massachusetts Sample Co-60 Cs-134 Cs-137 Location Sample Date/Time Depth (ft) Soil Characteristics (pCIlg)1 (pci/g)2 (pCI/g)3 6/25/2004 11:47 53-55 Albite gneiss boulder, dry. <MDA <MDA <MDA 6/25/2004 13:54 55-58 Same as above. Damp. <MDA <MDA <MDA 6/25/2004 14:11 58-60 Same as above. Dry. <MDA <MDA <MDA Same as above (60-61.5). Fine sand with olive silt, loose, saturated, unsorted.
6/25/2004 14:31 60-63 3" albite gneiss core @ bottom (61.5-63). <MDA <MDA <MDA 6/25/2004 15:00 63-65 Boulder. <MDA <MDA <MDA 6/25/2004 15:15 65-75 Cobbles of granite gneiss, garnet gneiss and marble. Subround. <MDA <MDA <MDA Silt olive green and clay with fine angular gravel, some medium gravel, damp, 6/25/2004 8:30 75-80 very dense, unsorted, few cobbles at bottom <MDA <MDA <MDA Till extremely dense, consisting of silt, olive little clay, and fine to coarse angular gravel. Some fine sand, unsorted dry. Gravel is granite gneiss and 6/29/2004 8:00 80-85 chlorite schist. <MDA <MDA <MDA 6/29/2004 8:19 85-90 Same as above <MDA <MDA <MDA 6/29/2004 8:50 90-95 Same as above <MDA <MDA <MDA Silt, olive, very dense, dry. Trace clay with fine angular gravel. Faint bedding 6/29/2004 9:10 95-100 near bottom, defined by 1-2 mm light gray clay varves. <MDA <MDA <MDA 6/29/2004 9:44 100-105 Same as above <MDA <MDA <MDA Silt, olive with clay and fine angular gravel. Little coarse gravel. Unsorted, 6/29/2004 16:25 105-110 damp, very dense. Gneiss boulder from 105-106. <MDA <MDA <MDA Clay olive with fine angular gravel, trace coarse subangular garnet schist 6/30/2004 7:17 110-115 faragments. One talc clast. <MDA <MDA <MDA Same as above. Few 1-2mm very fine gray sand lamellae. One 1" very coarse 6/30/2004 7:40 115-125 brown sand layer with small cobble at top. <MDA <MDA <MDA 6/30/2004 8:35 125-130 Silt olive, with clay, very dense, unsorted, damp. Fine to coarse gravel <MDA <MDA <MDA 6/30/2004 9:07 130-135 Same. Some gneiss and schist cobbles. <MDA <MDA <MDA 6/30/2004 9:35 135-138 Silt. Olive. Trace clay, very dense, dry, unsorted. Cobble at bottom. <MDA <MDA <MDA 6/30/2004 10:08 138-145 Same as above. <MDA <MDA <MDA YA-REPT-00-010-05
( (
Table 4 Summary of Soil Sample Screening Data: Gamma Activity Yankee Nuclear Power Station Rowe, Massachusetts Sample Co-60 Cs-134 Cs-137 Location Sample Date/Time Depth (ft) Soil Characteristics (pCI/g)1 (pCi/g)2 (pCI/g)3 6/30/2004 11:30 145-149 Same as above(145-147). Albite gneiss, mostly pulverized (147-149). <MDA <MDA <MDA 6/30/2004 14:13 149-155 Gneiss and schist cobbles. <MDA <MDA <MDA 6/30/2004 14:35 155-157 Same silt. Fine to coarse angular gravel as in above. <MDA <MDA <MDA Silt, olive, some clay, very dense, unsorted with fine to medium angular gravel.
6/30/2004 16:37 157-165 Trace cobbles. Few fine sand lamellae. <MDA <MDA <MDA Albite gneiss boulder (165-166). Rounded cobbles of gneiss, quartzite, trace 7/1/2004 9:05 165-170 of thumbnail sized clumps of olive clay. CODA <MDA <MDA Sand fine to med. loose, saturated, olive, trace silt(166-174). Sand fine to med 7/14/2004 16:40 170-178 and silt olive, dense, moist(174-175). Till, very dense, dry(175-178). <MDA <MDA <MDA Sand very fine, olive, moderately dense, well sorted with silt, little clay, 7/15/2004 10:30 178-185 saturated. <MDA <MDA <MDA 185-189 Same as above. Faint lamination visible. Rock at bottom. <MDA <MDA <MDA 189-195 Albite gneiss boulder. Very fine sand at 194-195. <MDA <MDA <MDA Albite gneiss bedrock, coarse grained. Bottom 6" very quartz rich. 1/4" albite 195-205 megacrystals. Top of rock - 196'. <MDA <MDA <MDA 205-215 Fractures at different zones. Rock iron-stained <MDA <MDA <MDA Fill consisting of silt, brown and fine to coarse sand. Fine to coarse subangular MW-109B 7/20/2004 12:22 0-5 gravel. Some fist-sized cobble, loose dry, unsorted. <MDA <MDA <MDA Boulder(5-6). Fill (6-8). Stratified drift, consisting of vf sand and rounded fine 7/20/2004 12:48 5-11 to coarse gravel with brown silt, loose, dry, unsorted, few cobbles. <MDA <MDA <MDA 7/20/2004 13:10 11-12 Boulder. Albite gneiss. <MDA <MDA <MDA Boulder(12-13.5). 13.5-15 Silt, brown and fine to coarse angular gravel, little 7/20/2004 15:17 12-15 fine to med sand, unsorted, loose, moist to wet. I <MDA < <MDA YA-REPT-00-010-05
( (
Table 4 Summary of Soil Sample Screening Data: Gamma Activity Yankee Nuclear Power Station Rowe, Massachusetts Sample Co-60 Cs-134 Cs-137 Location Sample Date/Time Depth (ft) Soil Characteristics (pCi/g)1 (pC-lg) 2 (pCI/g)3 Till consisting of silt, olive, trace clay, some fine to coarse sand and fine to 7/20/2004 16:10 15-20 coarse subangular gravel, very dense, damp, unsorted. Few 3" cobbles. <MDA <MDA <MDA Till. Mostly silt, poorly sorted, some gravel, little clay, damp, hard, poor 7/27/2004 9:20 20-25 plasticity. <MDA <MDA <MDA 7/27/2004 9:30 25-29 Grayish brown, mostly silty, some gravel, moist. <MDA <MDA <MDA 7/27/2004 9:40 30-35 Same as above. Dry. <MDA <MDA <MDA 7/27/2004 10:20 35-40 Same as above. Some clay. Damp to dry. <MDA <MDA <MDA Greyish olive clayey silt, little gravel, dry, hard, little plasticity, (till), 6" cobble at 7/27/2004 10:30 40-45 43.5' <MDA <MDA <MDA Greyish olivefine sandy silt, mostly silt, little clay, damp to moist, some 7/27/2004 11:10 45-53 laminations, hard, low plasticity <MDA <MDA <MDA 7/27/2004 12:05 53-57 Grayish olive silt, little fine sand, little clay. Damp to dry, firm, low plasticity. <MDA <MDA <MDA 7/27/2004 12:25 57-60 Same as above. <MDA <MDA <MDA Greyish brown gravely silt, mostly silt, some to little gravel, little clay, dry, hard, 7/28/2004 8:10 60-65 no plasticity <MDA <MDA <MDA Greyish brown gravely silt, mostly silt, some gravel, some clay, dry, hard, no 7/28/2004 8:37 65-67 plasticity <MDA <MDA <MDA 7/28/2004 8:45 67-70 same as above <MDA <MDA <MDA Greyish brown silty sand, fine sand with some silt, little clay, damp to moist, 7/28/2004 9:00 70-79 med soft, homegenous structure, weak cementation <MDA <MDA <MDA Greyish brown clayey sandy silt, mostly silt and clay with some fine sand and 7/28/2004 9:45 79-80 little gravel, damp to moist, poor plasticity <MDA <MDA <MDA 7/28/2004 10:00 80-85 Same as above <MDA <MDA <MDA Greyish brown silty clay, mostly clay with some silt, very little sand, damp, poor 7/28/2004 10:25 85-90 plasticity <MDA <MDA <MDA YA-REPT-00-01 0-05
( (
Table 4 Summary of Soil Sample Screening Data: Gamma Activity Yankee Nuclear Power Station Rowe, Massachusetts Sample Co-60 Cs-134 Cs-137 Location Sample Date/Time Depth (ft) Soil Characteristics (pCIlg)l (pCilg) 2 (pCI/g) 3 Greyish brown silty sand, course sand with gravel and little clay, poorly sorted, 7/282004 10:40 90-100 wet <MDA <MDA <MDA Greyish brow clayey silt wish some clay and little gravel, very stiff, poor 7/28/2004 13:15 100-105 plasticity <MDA <MDA <MDA Greyish brown silty clay, some silt, little gravel, little sand damp, moderate 7/29/2004 7:50 105-110 plasticity <MDA <MDA <MDA 7/29/2004 7:55 110-120 Same as above, but laminated layers of clay and silt/fine sand <MDA <MDA <MDA 7/29/2004 8:25 120-125 same fine sandy siltand clay layers, cobble at 120' <MDA <MDA <MDA 7/292004 9:51 125-130 Lexan liner, looks fairly sandy <MDA <MDA <MDA Greyish brown silty clay, mostly clay with some silt, little gravel, cobbles, 7/29/2004 11:50 130-145 damp, stiff, not laminatedpoorto moderate plasticity <MDA <MDA <MDA
- 7/30/2004 7:49 145-155 Grayish brown silt, mostly silt, little clay, damp, not laminated, no plasticity <MDA <MDA <MDA Grayish brown silt, mostly silt, little clay, moist, firm, not laminated, poor 7/30/2004 8:14 155-165 plasticity <MDA <MDA <MDA Greyish brown silt, mostly course silt, little to no clay, firm, not laminated, poor 7/30/2004 9:47 165-171 plasticity <MDA <MDA <MDA 171-175 Same as above, but some clay, crushed cobble <MDA <MDA <MDA 7/30/2004 10:00 175-185 Cored bedrock, total depth 190' <MDA <MDA <MDA
<MDA <MDA <MDA Sand, brown, f to c and organic silt, dark brown, mod dense damp, little sub MW-106B 8/12/2004 8:15 0-2 round gravel, unsorted <MDA <MDA <MDA 2-2.5 Sand, fine, grey, well sorted <MDA <MDA <MDA 2.5-5 Sand and gravel, brown to orange, angular, unsorted, damp, little silt <MDA <MDA <MDA 6-6.9 Albite gneiss boulder <MDA <MDA <MDA Silt, grey brown with f-m sand and subangular gravel, damp, unsorted, mod 8/12/2004 8:25 6.9-11 dense <MDA <MDA <MDA 11-11.9 Severly weathered schist boulder, oxidized orange, loose, mostly sand <MDA <MDA <MDA YA-REPT-00-010-05
( (
Table 4 Summary of Soil Sample Screening Data: Gamma Activity Yankee Nuclear Power Station Rowe, Massachusetts Sample Co-60 Cs-134 Cs-137 Location Sample Date/Time Depth (ft) Soil Characteristics (pCZ/g) 1 (pClg)2 (pCi/g) 3 11.9-13 same as 6.9-11, with a 4" at 13 <MDA <MDA <MDA Sand f-c and gravel, brown gravel is f-c, subround, little silt, wet, loose, 8/12/2004 8:40 13-15 unsorted <MDA <MDA <MDA 15-17 Same as above, 4" cobble at 17 <MDA <MDA <MDA Silt, brown with f-c subround gravel, little sand, dense, moist, unsorted, 17-20 increasing clay content with depth, one fist sized cobble <MDA <MDA <MDA 20-22 Sand and gravel, brown, wet, loose <MDA <MDA <MDA Till consisting of silt, olive, with f-c angular gravel, little sand, trace clay, 22-25 unsorted, damp, very dense <MDA <MDA <MDA Till, olive, consisting of silt, clay and f-c angular gravel, unsorted,damp, very 8/13/2004 7:40 25-30 dense, trace sand <MDA <MDA <MDA 8/13/2004 8:10 30-40 Same <MDA <MDA <MDA 8/13/2004 8:30 40-43 Same, few fist sized cobbles <MDA <MDA <MDA 8/13/2004 8:40 43-45 Same <MDA <MDA <MDA 8/13/2004 14:31 45-49 Same, grout on top of sample <MDA <MDA <MDA 8/13/2004 14:48 49-51 Same, dry, extremely dense <MDA <MDA <MDA 8/13/2004 15:00 51-55 Same <MDA <MDA <MDA 8/13/2004 15:16 55-59 Same <MDA <MDA <MDA 8/13/2004 15:41 59-62 Same, talc fragment <MDA <MDA <MDA 8/13/2004 15:59 62-65 Same <MDA <MDA 'MDA 8/13/2004 16:18 65-67 Same <MDA <MDA <MDA 8/16/2004 7:16 67-72 Same, 2<seam of sil, clay and f sand at 71.5 <MDA <MDA <MDA 8/16/2004 7:36 72-75 Same <MDA <MDA <MDA 8/16/2004 7:53 75-77 Same with increasing clay content and finer grained gravel <MDA <MDA <MDA Laminated silty clay, olive, very stiff, damp, 2-5mm vf sand laminated at 2-5cm 77-80 intervals, more sand at bottom <MDA <MDA <MDA Till, consisting of silty clay, olive with f subangular gravel, little m-c gravel, 8/16/2004 8:21 80-83 trace f-m sand, very stiff, damp, unsorted <MDA <MDA <MDA YA-REPT-00-01 0-05
( (
Table 4 Summary of Soil Sample Screening Data: Gamma Activity Yankee Nuclear Power Station Rowe, Massachusetts Sample Co-60 Cs-134 Cs-137 Location Sample Date/Time Depth (ft) Soil Characteristics (pCi/g)1 (pCilg) 2 (pCi/g)3 8/16/2004 8:43 83-83.5 Albite gneiss boulder <MDA <MDA <MDA 8/16/2004 9:04 83.5-85 Albite gneiss <MDA <MDA <MDA 8/16/2004 9:45 85-86 Same boulder <MDA <MDA <MDA 8/16/2004 10:25 86-86.5 Same <MDA <MDA <MDA 8/16/2004 10:39 86.5-89 Sand, f-m <MDA <MDA <MDA 89-90 Albite gneiss boulder <MDA <MDA <MDA 8/16/2004 11:11 90-91.5 Till, same as 80-83 <MDA <MDA <MDA 91.5-92.5 Sand, f-m, little silt <MDA <MDA <MDA 92.5-93 Albite gneiss boulder <MDA <MDA <MDA 8/16/2004 11:39 93-95 Till, with more c gravel than 80-83, few fist sized cobbles <MDA <MDA <MDA Till consisting of olive clay, silt and f-m subangular gravel, trace sand some c 8/17/2004 8:45 95-103 gravel and fist sized cobbles, very stiff, moist, unsorted <MDA <MDA <MDA Laminated silt and clay, olive, stiff, damp, some f-rn subangular gravel, very 8/17/2004 9:07 103-110 plastic <MDA <MDA <MDA 8/17/2004 10:04 110-115 Same as above, silty clay, little gravel <MDA <MDA <MDA Same, laminated silty clay, 1mm of vf gray sand, trace gravel, more gravel at 8/17/2004 10:56 115-123 bottom <MDA <MDA <MDA
_ 8/17/2004 13:46 123-128 Lexan liner, same <MDA <MDA <MDA 8/18/2004 8:09 125-130 Same, laminated silty clay, olive, trace fist sizes cobbles, <MDA <MDA <MDA 130-131 Sand f with silt, olive, saturated, firm <MDA <MDA <MDA 131-132 Same as 125-130 <MDA <MDA <MDA 132-135 Dropped out, sand? <MDA <MDA <MDA 8/18/2004 10:00 137-139 Boulder <MDA <MDA <MDA Bottom 6" is Albite gneiss cobble, above is till, clayey silt with f-m subangular 8/18/2004 10:30 139-141 gravel, few fist sized cobbles, dense, moist, unsorted <MDA <MDA <MDA Sand, vf, micaceous and silt, olive,trace c gravel, loose, saturated, some c 8/18/2004 10:54 141-155 gravel at 155 <MDA <MDA <MDA YA-REPT-00-01 0-05
( (
Table 4 Summary of Soil Sample Screening Data: Gamma Activity Yankee Nuclear Power Station Rowe, Massachusetts Sample Co-60 Cs-1 34 Cs-137 Location Sample Date/Time Depth (ft) Soil Characteristics (pCi/g)I (pCljg)2 (pClIg) 3 F sand, olive, with f-c subround gravel, some silt, med dense, unsorted, 8/18/2004 14:07 155-158.5 satuated <MDA <MDA <MDA 158.5-163.5 F-c sand with same <MDA <MDA <MDA 163.5-165 Laminated silty clay, olive, very stiff, damp <MDA <MDA <MDA 8/19/2004 8:46 165-172 Sand, brown, m to vc and f to m gravel, little silt, loose, saturated <MDA <MDA <MDA 172-173 Silt, olive, saturated, firm <MDA <MDA <MDA
- 173-175 F sand, brown, little silt, firm, saturated <MDA <MDA <MDA 8/19/2004 10
- 10 175-185 Laminated sand, vf, olive and silt, some clay, firm, saturated <MDA <MDA <MDA 8/19/2004 12:40 185-195 Same <MDA <MDA <MDA 8/19(2004 13:15 195-199 Clay, olive, some silt, med soft <MDA <MDA <MDA 199-203 Vf sand and silt, some clay, med soft, wet <MDA <MDA <MDA 203-205 Clay laminated with silt, stiff, moist <MDA <MDA <MDA 8/19/2004 14:07 205-211 Same, trace vf sand <MDA <MDA <MDA 211-215 Same, some vf sand <MDA <MDA <MDA 215-225 Same <MDA <MDA <MDA 8/19/2004 15:35 225-230 Same <MDA <MDA <MDA 230-232 Same, little f gravel <MDA <MDA <MDA Gravel f to c, angular, some silt and clay, 6" Albite gneiss cobble at bottom, 232-233 loose, wet <MDA <MDA <MDA 8/19/2004 16:16 233-242 BEDROCK Albite Gneiss <MDA <MDA <MDA 242-245 BEDROCK Albite Gneiss _ <MDA MDA<MDA Notes: ' Minimum Detectable Acitivity for Co-60 is 1.5E-01 pCi/g 2 Minimum Detectable Acitivity for Cs-134 is 1.5E-01 pCi/g 3 Minimum Detectable Activity for Cs-1 37 is 1.8E-01 pCi/g YA-REPT-00-010-05
Table 5 Summary Monitoring Well Elevations and Location Coordinates (feet, msl)
Yankee Nuclear Power Station Rowe, Massachusetts Elevation Top Elevation Top Elevation PVC Casing Ground Northing Easting Well Number (2003 survey) (2003 survey) (2003 survey) (2003 survey) (2003 survey)
B-1 1126.86 1127.01 1125.8 3093605.27 272469.79 CB-1 1128.63 1128.63 1127.0 3093618.64 272442.49 CB-2 1118.07 1118.47 1118.5 3093716.68 272148.0 CB-3 1138.62 1138.76 1138.8 3093282.03 272493.16 CB-4 1085.61 1085.86 1084.1 3093627.45 271469.90 CB-5 1181.38 1181.49 1177.7 3093260.51 273112.2 CB-6 1112.06 1112.36 1110.1 3093781.64 272014.0 CB-7 1139.73 1139.93 1139.9 3093398.20 272485.16 CB-8 1139.14 1139.67 1139.6 3093424.39 272609.3 CB-9 1124.69 1125.04 1125.0 3093562.03 272371.46 CB-10 No Access CB-11A No Access CB-12 No Access CW-2 1136.87 1137.28 1137.3 3093387.17 272388.70 CW-3 1138.38 1138.91 1138.9 3093532.13 272534.79 CW-4 1139.13 1139.78 1139.8 3093367.75 272594.72 CW-5 1124.92 1125.27 1125.3 3093690.69 272518.16 CW-6 1122.25 1122.93 1123.0 3093596.29 272151.81 CW-7 1126.16 1126.41 1126.4 3093769.82 272368.5 CW-8 1126.49 1126.74 1126.7 3093660.04 272231.20 CW-10 1124.53 1124.79 1124.8 3093880.19 272659.52 CW-11 No Access MW-1 1138.48 1138.88 1138.9 3093490.37 272484.97 MW-2 (metal) 1125.97 1126.19 1126.2 3093492.13 272419.4 MW-5 No Access MW-6 1125.30 1127.10 1127.1 3093483.72 272280.0 MW-100A No Access MW-100B No Access MW-101B 1125.68 1125.93 1125.9 3093485.38 272378.6 MW-101C 1125.43 1125.73 1125.7 3093487.09 272384.3 MW-1 02A 1125.62 1125.82 1125.8 3093576.50 272336.9 MW-102B 1125.67 1125.87 1125.9 3093573.63 272333.7 MW-1 02C 1125.55 1125.88 1125.9 3093570.88 272329.7 MW-103A 1110.65 1110.91 1110.9 3093581.71 271903.99 MW-103B 1110.92 1111.10 1111.1 3093584.34 271907.7 MW-103C 1110.59 1110.71 1110.7 3093579.00 271899.4 MW-104B 1117.75 1118.36 1118.4 3093729.75 272165.6 MW-104C 1118.17 1118.47 1118.5 3093726.18 272161.3 MW-105B 1126.29 1126.52 1126.5 3093767.39 272372.8 MW-105C 1126.22 1126.48 1126.5 3093768.04 272367.91 YA-REPT-00-01 0-05
Table 5 Summary Monitoring Well Elevations and Location Coordinates (feet, msl)
Yankee Nuclear Power Station Rowe, Massachusetts Elevation Top Elevation Top Elevation PVC Casing Ground Northing Easting Well Number (2003 survey) (2003 survey) (2003 survey) (2003 survey) (2003 survey)
MW-106A 1088.49 1088.91 1089.2 3093817.60 271790.7 MW-106B 1088.14 1088.92 1088.9 3093826.45 271815.71 MW-106C 1088.30 1088.72 1089.0 3093824.14 271808.4 MW-1 06D 1088.66 1088.89 1089.1 3093820.82 271799.26 MW-1 07B 1124.58 1124.93 1124.9 3093574.41 272399.33 MW-107C 1124.65 1125.00 1125.0 3093577.56 272396.49 MW-107D 1124.68 1125.03 1125.0 3093573.59 272391.42 MW-108A 1118.00 1118.40 1118.4 3093961.35 272329.51 MW-108B 1118.18 1118.52 1118.5 3093955.34 272329.93 MW-108C 1118.26 1118.68 1118.7 3093947.82 272330.90 MW-109B 1123.70 1124.56 1124.6 3093544.64 272197.4 MW-109C 1123.40 1124.20 1124.2 3093559.34 272187.60 MW-109D 1123.38 1124.18 1124.2 3093552.59 272192.18 CFW-1 1168.69 1169.59 1167.2 3093089.35 272941.07 CFW-2 1178.34 1178.60 1175.9 3093361.45 273029.5 CFW-3 1182.83 1182.90 1179.4 3093430.26 273120.8 CFW-4 1181.77 1181.80 1177.6 3093431.19 273125.08 CFW-5 1143.93 1144.57 1140.9 3093499.54 273242.27 CFW-6 1140.07 1140.40 1137.0 3093653.22 273170.03 CFW-7 1180.58 1180.78 1177.4 3093400.13 273079.10 OSR-1 1159.73 1159.98 1158.2 3093245.82 272938.97 Sherman Spring Outcrop 1091.0 3093796.22 271934.92 12" CMP Invert Sherman Spring Sample Point 1045.5 3093977.22 271739.42 Plant SupplyWell 1178.32 1175.60 3092867.76 272528.20 Furlon House Well 1183.1 3091285.14 270022.69 taff Gauge @ 26' approx. approx.
NE corner Power House 1029.79 3094006 27169 Benchmark Top of Wall NW corner Power House 1048.06 3093954.21 271664.15 Staff Gauge @ 17' @
NE corner Cooling Water Outfall 1119.15 3093956.85 272207.09 Staff Gauge @ 16' @
NW corner Cooling Water Outfall _ _1118.04 3093948.51 272180.48 MSL datum is 105.66 feet above plant datum (NEP)
^ In vicinity of US Gen power plant YA-REPT-00-01 0-05
Table 6 Summary Details of Monitoring Well Development Yankee Nuclear Power Station Rowe, Massachusetts Static Total Average Depth to Gallons Pumping Ending Well No. Date Water (ft) Pumped Rate (gpm) Turbidity' MW-106A 9/23/2004 6.50 50 0.5 1 MW-106B 9/23/2004 37.73 400 4 1 MW-106C 9/23/2004 27.70 50 0.03125 3 MW-106D 912312004 38.03 900 0.8 1 MW-108A 8/11/2004 12.38 25 0.06944 3 MW-108B 8/11/2004 52.85 185 0.67 1 MW-108C 8/11/2004 14.00 40 0.167 3 MW-109B 8/12/2004 29.90 290 0.5 2 MW-109C 8/12/2004 15.00 110 1 1 MW-109D 8/13/2004 34.30 80 0.205 3 Note: Relative turbidity scale where 1 corresponds to clear water and 5 corresponds to very silty, opaque water.
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Table 7 Details of Monitoring Well Abandonment Yankee Nuclear Power Station Rowe, Massachusetts Total One-Half Total Depth Well Casing Filter Pack Grout Below Screen Diameter Volume Volume Volume Time of Groul Well No. Grade (ft) Length (ft) (in) (gal) (gal) (gal) Injection Thursday, 7-22-04 CW-11 9.0 7 2 1.5 2.2 4.7 15:00 CB-11A 19.0 10 2 3.1 2.9 6.0 15:10 MW-1 21.1 10 2 3.4 2.9 6.3 15:15 B-1 50.7 10 4 33.1 4.9 38.0 15:20 CB-10 11.5 5 2 1.9 1.7 3.6 15:40 Friday, 7-23-04 CW-8 18.9 10 2.5 4.8 2.9 7.7 8:57 Monday. 11-8-04 CB-5 59.0 30 2.5 15.0 11.5 26.5 Not Available CFW-2 20.0 10 2 3.3 4.3 7.5 Not Available CFW-3 34.0 10 2 5.5 4.3 9.8 Not Available CFW-4 53.0 10 2 8.6 4.3 12.9 Not Available CFW-7 30.0 10 2 4.9 4.3 9.2 Not Available OSR-1 13.0 1_
0 2.5 3.3 3.8 7.1 Not Available Tuesday. 11-16-04 CB-1 21.9 10 2.5 5.6 3.8 9.4 12:45 CB-9 23.0 10 2.5 5.9 3.8 9.7 13:00 MW-5 19.1 10 2 3.1 4.3 7.4 13:15
_ _ _I I _ _ I _ _ _ I _ _ I _ _ I _ _
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Table 7 Details of Monitoring Well Abandonment Yankee Nuclear Power Station Rowe, Massachusetts Total One-Half Total Depth Well Casing Filter Pack Grout Below Screen Diameter Volume Volume Volume Time of Grou Well No. Grade (ft) Length (ft) (in) (gal) (gal) (gal) Injection Wednesday, 11-17-04 CB-7 16.4 10 2.5 4.2 3.8 8.0 13:34 CB-12 6.6 5 2 1.1 2.1 3.2 14:00 CW-3 23.2 15 2.5 5.9 5.7 11.6 14:25 CW-4 15.9 10 2.5 4.1 3.8 7.9 14:50 CW-5 16.5 10 2.5 4.2 3.8 8.0 16:10 M'W-2 18.0 10 2 2.9 4.3 7.2 12:15 MW-6 15.7 10 2 2.6 4.3 6.8 13:19 Notes: Grout injected in each well consisted of a mixture of 94 pounds Portland cement, 8 gallons water and approximately 2 pounds bentonite powder.
Grout was injected through a tremie pipe placed within one foot of the bottom of the well, with a positive displacement pump.
All wells were checked a minimum of 30 minutes after filling with grout and topped off with additional grout if any settlement occurred.
All wells accepted the approximate volume of grout calculated above.
All wells except CB-5, CFW-2, CFW-3, CFW-4, CFW-7 and OSR-1 were abandoned under the direction of Roy Buckenberger, a Massachusetts Licensed Driller with Boart Longyear Drilling Company, and under the supervision of David Scott, the Project Hydrogeologist. Wells CB-5, CFW-2, CFW-3, CFW4, CFW-7 and OSR-1 were abandoned by Kevin Regan of D.L. Maher Company, a Division of Boart Longyear Drilling Company, under the supervision of Cianbro Construction Company. The casing of CW-8 was removed to 5.6 feet below grade. All other wells were left with the top of casing at grade because the final grading of the decommissioned site will cover the wells by several feet.
YA-REPT-00-010-05
Table 8 Summary Quarterly Ground Water Elevations (feet, msl)
Synoptic Measurements Yankee Nuclear Power Station Rowe, Massachusetts Q1-02 0 ____04 Q3-04 Q4-04 Well No. Elevation DTWv Elevation DTW Elevation DTW Elevation DTW Elevation Top PVC 2-26-04 2-26-04 5-14-04 5-14-04 8-15-04 8-15-04 10-31-04 10-31-04 B-1 1126.86 18.50 1108.36 16.81 1110.05 CB-1 1128.63 9.90 1118.73 12.15 1116.48 12.80 1115.83 CB-2 1118.07 14.53 1103.54 9.73 1108.34 12.72 1105.35 CB-3 1138.62 5.21 1133.41 3.52 1135.10 4.32 1134.30 4.54 1134.08 CB4 1085.61 11.10 1074.51 10.52 1075.09 11.00 1074.61 CB-5 1181.38 28.24 1153.14 30.00 1151.38 29.58 1151.80 CB-6 1112.06 14.90 1097.16 14.30 1097.76 14.70 1097.36 14.71 1097.35 CB-7 1139.73 11.90 1127.83 10.20 1129.53 10.93 1128.80 11.40 1128.33 CB-8 1139.14 4.01 1135.13 3.26 1135.88 4.89 1134.25 4.51 1134.63 CB-9 1124.69 _ 9.75 1114.94 CB-10 1126.7 3.97 1122.73 1.45 1125.25 CB-11A 1129.0 1.58 1127.42 CB-12 1134.2 5.00 1129.20 3.01 1131.19 3.76 1130.44 4.27 1129.93 CW-2 1136.87 12.42 1124.45 11.36 1125.51 11.75 1125.12 CW-3 1138.38 8.29 1130.09 7.07 1131.31 6.93 1131.45 7.96 1130.42 CW-4 1139.13 7.26 1131.87 6.88 1132.25 6.33 1132.80 6.63 1132.50 CW-5 1124.92 5.20 1119.72 8.05 1116.87 9.31 1115.61 CW-6 1122.50 12.70 1109.80 10.44 1112.06 11.50 1111.00 10.99 1111.51 CW-7 1126.16 19.95 1106.21 15.20 1110.96 18.35 1107.81 18.18 1107.98 CW-8 1126.49 ______
CW-10 1124.53 19.32 1105.21 20.60 1103.93 21.00 1103.53 20.10 1104.43 CW-11 1128.2 MW-1 1138.48 12.19 1126.29 MW-2 1125.97 1.48 1124.49 2.25 1123.72_
MW-5 1126.7 5.72 1120.98 2.29 1124.41 3.01 1123.69 3.75 1122.95 MW-6 1125.30 7.89 1117.41 1 MW-100A 1125.8 6.69 1119.11 9.71 1116.09 10.55 1115.25 MW-100B 1125.8 8.64 1117.16 12.23 1113.57 11.16 1114.64 MW-101B 1125.68 20.74 1094.36 21.20 1104.48 22.21 1103.47 22.09 1103.59 MW-101C 1125.43 31.32 1104.69 33.50 1091.93 34.03 1091.40 34.68 1090.75 MW-102A 1125.62 14.29 1111.33 12.61 1113.01 14.49 1111.13 MW-102B 1125.67 22.90 1091.77 22.87 1102.80 24.21 1101.46 MW-102C 1125.55 33.90 1102.65 34.99 1090.56 35.67 1089.88 MW-103A 1110.65 19.25 1091.40 18.15 1092.50 19.13 1091.52 19.10 1091.55 MW-103B 1110.92 55.96 1054.96 57.18 1053.74 57.60 1053.32 59.02 1051.90 MW-103C 1110.59 34.63 1075.96 34.31 1076.28 35.87 1074.72 35.72 1074.87 MW-104B 1117.75 61.36 1056.39 61.50 1056.25 62.96 1054.79 MW-104C 1118.17 40.35 1077.82 40.10 1078.07 41.43 1076.74 41.28 1076.89 MW-105B 1126.29 20.98 1105.31 19.00 1107.29 20.73 1105.56 20.52 1105.77 MW-105C 1126.22 18.72 1107.50 17.48 1108.74 18.40 1107.82 7.75 1118.47 MW-106A 1088.49 _ 6.60 1081.89 YA-REPT-00-01 0-05
Table 8 Summary Quarterly Ground Water Elevations (feet, msl)
Synoptic Measurements Yankee Nuclear Power Station Rowe, Massachusetts
__________ 1'04 Q2- 04 Q3-'04 04-' 04 Well No. Elevation DTW Elevation DTW Elevation DTW Elevation DTW Elevation Top PVC 2-26-04 2-26-04 5-14-04 5-14-04 8-15-04 8-15-04 10-31-04 10-31-04 MW-106B 1088.14 39.00 1049.14 MW-106C 1088.30 _ _ = _ _ 38.90 1049.40 MW-106D 1088.66 43.70 1044.96 MW-107B 1124.58 21.52 1103.06 21.28 1103.30 22.82 1101.76 MW-107C 1124.65 13.92 1110.73 10.65 1114.00 12.32 1112.33 MW-107D 1124.68 30.12 1094.56 30.81 1093.87 30.45 1094.23 MW-108A 1118.00 12.31 1105.69 MW-108B 1118.18 53.43 1064.75 MW-108C 1118.26 14.20 1104.06 MW-109B 1123.70 28.70 1095.00 MW-109C 1123.40 15.28 1108.12 MW-109D 1123.38 37.87 1085.51 CFW-1 ^ 1169.59 >8.0 <1161.59 2.80 1166.79 2.95 1166.64 CFW-2* 1178.60 23.50 1155.10C 20.83 1157.77 25.00 1153.60 24.22 1154.38 CFW-3^ 1182.90 36.50 1146.40 34.44 1148.46 37.40 1145.50 36.72 1146.18 CFW-4* 1181.80 35.60 1146.20 33.75 1148.05 36.60 1145.20 35.82 1145.98 CFW-5* 1144.57 4.60 1139.97 4.40 1140.17 4.60 1139.97 4.44 1140.13 CFW 1140.40 6.00 1134.40 5.28 1135.12 6.20 1134.20 5.94 1134.46 CFW-7^ 1180.78 25.90 1154.88 23.09 1157.69 27.25 1153.53 26.49 1154.29 OSR-1 1159.73 7.40 1152.33 4.83 1154.90 7.87 1151.86 9.39 1150.34 Plant Supply 1178.32 Furlon House 1183.10 Sherman pring 1091.00 0.00 1091.00 0.00 1091.00 0.00 1091.00 0.00 1091.00 USGEN MW-2 ME USGEN MW-3aWI/ IM Sherman Reservoir' 1119.15 14.00 1105.15 D)eertfeld River2 1048.06 22.50 1025.56 1 From 17.00 feet on Staff Gauge at NE corner of Cooling Water Outfall 2 From Benchmark on Top of Wall @ NW Corner of US Gen Power House Elevations from top of steel casing MSL datum is 105.66 feet above plant datum (NEP)
V 1// = Well permanently abandoned YA-REPT-00-010-05
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TA .EE9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts July-03 -1.70E+00 3.80E+00 9.00E-01 4.00E+00 2.80E+00 3.40E+00 8.00E-01 2.80E+00 1.70E+00 8.20E+00 November-03 2.80E+00 2.80E+00 -1.OOE+00 3.28E+00 5.OOE-01 2.47E+00 2.OOE-01 2.14E+00 O.OOE+00 6.58E+00 March-04 3.OOE-01 1.65E+00 -2.OOE-01 2.14E+00 3.OOE-01 1.97E+00 -1.10E+00 2.47E+00 6.70E+00 7.07E+00 May-04 2.OOE+00 2.15E+00 -4.OOE-01 2.96E+00 -2.80E+00 4.28E+00 -1.70E+00 1.81E+00 3.20E+00 6.91E+0O August-04 Well Abandoned in July 2004 August-03 -3.20E-01 2.52E+00 -8.90E-01 2.53E+00 -9.81E-01 1.69E+00 -3.25E-01 2.15E+00 -2.67E+00 5.59E+00 November-03 1.30E+OO 2.96E+O0 5.00E-01 3.78E+00 I.OOE-01 2.47E+00 2.OOE-01 2.47E+00 5.OOE+00 7.90E+00 March-04 -3.OOE-01 2.47E+00 -6.OOE-01 2.15E+00 -7.OOE-01 1.81 E+00 -1.80E+00 1.81 E+O0 -5.OOE+00 5.59E+00 May-04 -2.70E+00 2.30E+O0 O.OOE+00 2.30E+00 2.OOE-01 2.15E+00 -1.1OE+00 1.81 E+00 2.80E+00 6.25E+00 August-04 -3.90E+00 4.77E+00 4.50E+00 4.77E+00 1.10E+00 2.80E+00 8.00E-01 2.80E+00 5.1 OE+00 1.02E+01 August-04 1.OOE+00 2.47E+00 -2.60E+00 3.29E+00 O.OOE+00 2.30E+00 6.OOE-01 2.14E+00 -2.30E+00 6.42E+00 November-04 -6.OOE-01 1.97E+00 -1.20E+00 1.81 E+00 4.OOE-01 1.97E+00 4.OOE-01 2.14E+00 3.20E+00 6.91 E+00 E=C2 July-03 -2.50E+00 5.60E+00 9.OOE-01 4.1 OE+00 1.OOE+00 4.OOE+00 1.OOE+00 3.50E+00 3.40E+00 1.20E+01 November-03 3.OOE-01 2.96E+00 -3.30E+00 3.62E+00 9.OOE-01 2.30E+00 1.20E+00 2.47E+00 O.OOE+00 7.07E+00 March-04 8.OOE-01 2.30E+00 1.20E+00 1.81 E+O0 -2.OOE-01 2.15E+O0 -1.80E+O0 1.65E+OO 3.80E+00 5.76E+00 May-04 -3.50E+00 2.63E+00 -2.60E+00 3.13E+00 -3.OOE-01 2.96E+00 3.20E+00 2.47E+00 -2.30E+00 7.07E+00 May-04 2.1OE+O0 3.13E+00 1.30E+00 2.30E+00 -5.OOE-01 2.80E+00 -1.90E+00 2.80E+00 -6.60E+00 9.21 E+00 August-04 -1.OOE+00 2.96E+00 1.20E+00 3.62E+00 1.20E+00 2.30E+00 -7.00E-01 2.47E+00 -7.90E+00 6.91 E+00 August-04 9.OOE-01 2.14E+00 1.90E+00 2.63E+00 -1.90E+00 2.14E+00 -1.40E+00 1.65E+00 -5.OOE-01 5.76E+00 November-04 3.OOE-01 1.97E+00 -5.OOE-01 3.29E+00 2.40E-01 1.63E+00 1.20E+00 1.97E+00 O.OOE+00 6.09E+00 July-03 November-03 No Sample Collected March-04 May-04 No Sample Collected August-04 November-04 No Sample Collected The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
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TA. _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts I Is Cs-1 34 Lc 1 Cs137 Lc I Eu-152 Lc I Eu-154 Lc I Eu-155 Lc I I July-03 1.30E+00 3.80E+00 8.00E-01 3.20E+00 5.00E-01 8.00E+00 2.40E+00 1.06E+01 2.40E+00 1.22E+01 November-03 -2.00E+00 1.78E+00 -1.70E+00 2.47E+00 1.70E+00 5.43E+00 -7.00E-01 7.07E+00 -2.50E+00 7.40E+00 March-04 -4.OOE-01 1.65E+00 -6.00E-01 1.97E+00 5.00E-01 6.91 E+00 7.50E+00 5.1 OE+00 5.90E+00 1.12E+01 May-04 4.OOE-01 2.47E+00 1.30E+00 2.47E+00 -4.90E+00 5.92E+00 -7.60E+00 8.55E+00 -5.00E-01 7.90E+00 August-04 August-03 -1.83E+00 2.12E+00 5.34E-01 2.50E+00 -2.36E+00 5.59E+00 -5.77E-01 5.71 E+00 3.85E+00 8.97E+00 November-03 1.1OE+00 2.30E+00 5.00E-01 2.96E+00 7.40E+00 6.42E+00 7.70E+00 8.88E+00 3.30E+00 8.55E+00 March-04 -4.00E-01 2.80E+00 5.00E-01 1.97E+00 -1.OOE+00 4.61 E+00 O.OOE+00 7.24E+00 2.90E+00 6.09E+00 May-04 -1.60E+00 1.97E+00 1.60E+00 2.63E+00 6.00E-01 6.58E+00 2.60E+00 5.59E+00 6.60E+00 9.05E+00 August-04 4.70E+00 4.94E+00 2.40E+00 3.45E+00 6.90E+00 7.73E+00 O.OOE+00 5.92E+00 O.OOE+00 1.OOE+01 August-04 -1.80E+00 2.63E+00 1.20E+00 2.63E+00 -3.20E+00 6.25E+00 -1.20E+00 5.76E+00 1.20E+00 1.02E+01 November-04 -2.00E+00 2.14E+00 -4.40E+00 2.47E+00 9.00E-01 6.91 E+00 3.70E+00 5.76E+00 2.00E+00 9.54E+00 July-03 -2.50E+00 5.80E+00 -1.00E+00 4.80E+00 -3.00E+00 1.10E+01 -1.OOE+O0 1.30E+01 -1.90E+00 1.70E+01 November-03 1.30E+00 2.96E+00 7.00E-01 1.97E+00 1.20E+00 5.43E+00 -9.OOE-01 7.90E+00 -4.80E+00 6.58E+00 March-04 1.40E+00 2.30E+00 -2.1 OE+00 1.81 E+00 -4.40E+00 6.25E+00 1.60E+00 7.90E+00 -8.40E+00 8.88E+00 May-04 1.20E+00 2.63E+00 2.OOE-01 2.80E+00 -3.00E-01 6.74E+00 9.00E-01 6.74E+00 -8.50E+00 9.21 E+00 May-04 -4.00E-01 4.11 E+00 -3.1OE+00 2.80E+00 -8.1 OE+00 5.76E+00 9.00E-01 9.87E+00 2.1 OE+00 8.88E+00 August-04 1.40E+00 2.47E+00 -3.00E-01 2.80E+00 1.10E+00 5.92E+00 -2.70E+00 9.05E+00 5.1 OE+00 8.39E+00 August-04 -2.00E-01 2.47E+00 3.00E-01 2.47E+00 -2.1 OE+00 5.59E+00 8.10E+00 7.73E+00 9.70E+00 7.90E+00 November-04 -2.1 OE+00 2.96E+00 5.00E-01 1.97E+00 1.30E+00 5.76E+00 -3.40E+00 7.57E+00 5.20E+00 6.91 E+00 July-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
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TA. E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts July-03 1.36E+03 3.50E+02 2.80E+00 2.40E+00 9.16E+00 1.96E+00 3.OOE+00 3.OOE+01 9.OOE-01 9.80E+00 November-03 9.OOE+02 1.65E+02 -3.1OE-01 1.04E+00 6.53E+00 1.43E+00 -6.OOE+00 2.47E+01 1.80E+00 5.10E+00 March-04 9.60E+02 1.65E+02 -1.90E-01 1.22E+00 6.50E+00 2.14E+01 3.OOE+00 2.80E+01 -3.10E+00 6.42E+00 May-04 5.90E+02 1.97E+02 1.40E+00 1.81E+00 9.OOE+00 2.30E+00 5.20E+01 3,78E+01 -1.10E+00 4.44E+00 August-04 August-03 1.76E+03 3.50E+02 1.54E+00 1.84E+00 1.35E+01 1.16E+00 -4.OOE+01 4,OOE+01 1.70E+00 5.80E+00 November-03 2.14E+03 1.81 E+02 -9.40E-01 1.51 E+00 1.26E+01 9.38E-01 -2.60E+01 3.45E+01 2.20E+00 7.24E+00 March-04 1.83E+03 1.81 E+02 5.OOE-01 1.65E+00 1.35E+01 1.97E+00 1.30E+01 2.47E+01 -4.20E+00 5.92E+00 May-04 1.16E+03 2.15E+02 1.80E+00 1.81 E+00 1.14E+01 1.53E+00 4.30E+01 4.77E+01 -2.00E-01 4.61 E+00 August-04 1.55E+03 1.97E+02 4.30E+00 2.63E+00 1.03E+01 2.30E+00 -3.90E+01 6.91 E+01 -9.40E+00 8.06E+00 August-04 1.25E+03 1.97E+02 3.20E+00 2.30E+00 9.20E+00 2.14E+00 -9.20E+01 7.90E+01 5.1 OE+00 6.42E+00 November-04 1.64E+03 1.97E+02 -2.02E+00 1.41 E+00 1.77E+01 1.65E+00 -4.1OE+01 4.77E+01 -4.1 OE+00 5.26E+00 July-03 4.11 E+02 2.70E+02 5.20E-01 3.1OE+00 1.62E+01 2.OOE+00 3.OOE-01 2.90E+01 -1.60E+00 9.30E+00 November-03 1.16E+03 1.65E+02 -1.OOE-01 1.65E+00 1.18E+01 1.81 E+00 -2.1 OE+01 3.13E+01 1.20E+00 5.59E+00 March-04 5.33E+02 1.56E+02 -7.80E-01 1.30E+00 9.96E+00 1.35E+00 4.20E+01 5.43E+01 2.70E+00 4.11 E+00 May-04 8.90E+02 2.14E+02 -1.22E+00 1.23E+00 1.OOE+01 1.45E+00 -3.60E+01 3.95E+01 -9.80E+00 6.25E+00 May-04 9.1 OE+02 2.14E+02 1.76E+00 1.63E+00 1.05E+01 1.46E+00 -2.70E+01 2.80E+01 -7.30E+00 5.76E+00 August-04 7.50E+02 1.81 E+02 5.70E-01 1.15E+00 1.18E+01 1.55E+00 3.30E+01 4.44E+01 -1.20E+00 4.94E+00 August-04 8.20E+02 1.97E+02 9.70E-01 1.25E+00 1.07E+01 1.58E+00 4.20E+01 3.78E+01 5.00E-01 4.94E+00 November-04 1.03E+03 1.81 E+02 -1.02E+00 1.05E+00 6.44E+00 1.55E+00 -1.40E+01 5.59E+01 -2.1 OE+00 5.43E+00 July-03 -4.60E+01 1.54E+02 4.50E+00 1.86E+00 2.48E+01 1.36E+00 November-03 March-04 -2.70E+01 1.56E+02 2.60E+00 1.97E+00 1.69E+01 1.32E+00 May-04 August-04 3.00E+01 1.81 E+02 2.70E+00 2.14E+00 7.50E+00 2.14E+00 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
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TA<__E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts l Ni-63 Lc sr-90
_NLc Tc-99 Lc Pu-238 Lc Pu-239/240 Lc July-03 -1.70E+00 7.30E+00 1.20E+00 2.20E+00 4.50E-02 1.12E-01 5.60E-02 1.12E-01 November-03 -1.60E+00 4.44E+00 -1.70E+00 1.97E+00 6.OOE-01 4.28E+00 4.90E-02 9.71 E-02 1.16E-01 1.35E-01 March-04 5.30E+00 4.44E+00 -1.OOE-01 2.14E+00 -4.80E+00 5.26E+00 -3.20E-03 1.81 E-03 9.OOE-03 1.97E-02 May-04 4.60E+00 4.44E+00 -8.OOE-01 1.81E+00 -5.OOE-01 5.76E+00 3.60E-03 8.06E-03 9.OOE-03 1.12E-02 August-04 August-03 1.OOE+00 4.40E+00 1.80E+00 2.60E+00 -1.29E-02 1.82E-02 1.10E-01 1.84E-01 November-03 2.OOE-01 4.77E+00 -1.60E+00 1.97E+00 -5.OOE-01 4.77E+00 -1.40E-02 2.30E-02 3.70E-01 3.13E-01 March-04 3.80E+00 4.28E+00 3.OOE-01 1.97E+00 -9.OOE-01 6.25E+00 1.30E-02 1.97E-02 -5.80E-04 6.74E-04 May-04 7.60E+00 4.94E+00 -6.OOE-01 1.81 E+00 2.80E+00 5.59E+00 5.50E-03 1.04E-02 -1.50E-03 1.81E-03 August-04 7.OOE-01 5.1OE+00 1.10E+00 1.97E+00 -1.90E+00 5.92E+00 3.20E-02 3.78E-02 O.OOE+00 3.78E-04 August-04 -9.OOE-01 5.10E+00 O.OOE+00 1.97E+00 -2.90E+00 5.10E+00 6.30E-03 1.22E-02 6.30E-03 1.22E-02 November-04 -7.OOE-01 5.26E+00 1.OOE+00 2.14E+00 -1.OOE-01 5.76E+00 O.OOE+00 2.63E-04 -9.1OE-03 6.09E-03 July-03 9.OOE-01 7.70E+00 2.OOE+00 3.60E+00 5.90E-02 2.70E-01 1.36E-01 1.80E-01 November-03 -2.10E+00 4.77E+00 2.30E+00 2.14E+00 5.OOE-01 5.10E+00 -8.OOE-03 1.32E-02 1.41E-01 1.81E-01 March-04 1.10E+00 4.61E+00 9.OOE-01 2.30E+00 -2.50E+00 5.1OE+00 -8.OOE-03 1.32E-02 1.OOE-01 1.81E-01 May-04 7.OOE-01 4.28E+00 1.90E+00 1.65E+00 -2.OOE-01 4.77E+00 -1.31 E-03 1.25E-03 -2.60E-03 1.81 E-03 May-04 6.1OE+00 4.94E+00 9.OOE-01 1.65E+00 8.OOE-01 4.44E+00 2.20E-02 2.14E-02 5.OOE-03 1.27E-02 August-04 4.30E+00 5.92E+00 -2.40E+00 1.81E+00 6.1OE+00 6.42E+00 -4.OOE-04 6.58E-03 1.30E-02 1.65E-02 August-04 1.20E+00 5.43E+00 -1.1OE+00 1.97E+00 4.OOE-01 4.11E+00 -1.68E-03 1.60E-03 -5.60E-04 9.21E-04 November-04 4.30E+00 5.26E+00 -2.OOE-01 2.30E+00 -1.OOE-01 5.76E+00 4.50E-03 1.09E-02 3.90E-03 3.13E-03 July-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
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TA. _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts 2.90E+00 3.20E+00 1.90E-01 2.20E-01 O.OOE+00 6.40E-04 O.OOE+00 4.80E-04
-6.10E-01 1.53E+00 -1.03E-01 1.07E-01 O.OOE+00 4.44E-04 -5.30E-03 8.72E-03 Bi-214 (7.9 pC/L)
March-04 -5.00E-01 4.44E+00 -1.20E-02 2.96E-02 O.OOE+00 3.29E-04 -5.60E-04 9.21 E-04 May-04 -5.10E+00 2.80E+00 -3.30E-02 1.97E-02 O.OOE+00 1.25E-04 O.OOE+O0 1.05E-04 August-04
'C-Eg. S August-03 2.30E+00 2.60E+00 5.OOE-02 2.20E-01 5.00E-03 4.00E-02 -5.60E-03 1.12E-02 November-03 9.OOE-02 1.35E-01 -1.20E-01 1.14E-01 5.60E-02 5.43E-02 1.50E-02 2.47E-02 Th-234&Pb-214(47.5&6.49pCi/L)
March-04 5.00E+00 3.29E+00 -1.80E-02 1.97E-02 -1.50E-03 1.41E-03 -1.24E-03 1.1 7E-03 May-04 -3.30E+00 3.45E+00 -3.30E-02 1.97E-02 4.50E-03 7.40E-03 -4.70E-04 7.73E-04 August-04 -1.60E+00 5.76E+00 -1.70E-02 4.44E-02 6.40E-02 6.74E-02 O.OOE+00 4.11 E-04 August-04 -1.30E+00 2.96E+00 -1.90E-02 6.91 E-02 O.OOE+00 5.76E-04 O.OOE+00 4.44E-04 November-04 4.20E+00 2.96E+00 3.40E-02 7.57E-02 1.80E-02 4.94E-02 -3.80E-03 2.80E-03 July-03 7.OOE-01 4.OOE+00 2.80E-01 4.40E-01 O.OOE+00 5.90E-01 2.70E-02 3.95E-02 November-03 1.11 E+00 1.60E+00 -1.29E-01 9.21 E-02 -4.80E-02 3.95E-02 -2.30E-03 2.30E-02 Th-234 55.5 pCi/L March-04 -8.80E-01 1.53E+00 -1.30E-01 1.09E-01 O.OOE+00 4.61 E-04 -6.60E-03 1.09E-02 May-04 -3.60E+00 3.13E+00 -3.00E-03 1.81 E-02 3.60E-03 6.74E-03 -4.40E-04 7.24E-04 May-04 -6.OOE-01 3.29E+00 -1.85E-02 1.28E-02 7.30E-03 8.55E-03 3.30E-03 5.43E-03 August-04 -2.00E+00 2.80E+00 -1.30E-02 1.97E-01 1.14E-02 1.48E-02 O.OOE+00 1.41 E-04 August-04 -1.70E+00 2.63E+00 O.OOE+00 1.61 E-04 O.OOE+00 1.41 E-04 O.OOE+00 1.61 E-04 November-04 7.00E-01 1.81E+00 -6.60E-03 1.20E-02 2.70E-02 4.94E-02 -7.30E-04 1.20E-03 July-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
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Tb. _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts July-03 -1.OOE+00 4.30E+00 -9.20E-01 4.OOE+00 -7.OOE-01 3.80E+00 O.OOE+00 3.40E+00 5.80E+00 9.80E+00 November-03 7.OOE-01 2.96E+00 -1.50E+00 2.96E+00 2.40E+00 2.63E+00 -1.50E+00 1.97E+00 -3.10E+00 6.90E+00 March-04 1.OOE+00 2.14E+00 7.OOE-01 1.97E+00 2.40E+00 1.81E+00 O.OOE+00 1.61E+00 9.30E+00 5.92E+00 May-04 -1.OOE-01 2.80E+00 3.80E+00 3.95E+00 -1.10E+00 2.30E+00 -2.50E+00 2.15E+00 O.OOE+00 7.73E+00 May-04 2.30E+00 1.97E+00 -6.OOE-01 2.30E+00 -5.OOE-01 1.81 E+00 5.OOE-01 1.97E+00 -1.70E+00 4.77E+00 August-04 6.OOE-01 1.97E+00 -1.20E+00 2.14E+00 7.10E-01 1.60E+00 4.OOE-01 1.81E+00 2.70E+00 5.76E+00 November-04 No Sample Collected August-03 November-03 No Sample Collected March-04 May-04 No Sample Collected August-04 November-04 No Sample Collected July-03 -3.OOE-01 4.OOE+00 7.OOE-01 3.70E+00 -9.70E-01 3.60E+00 1.18E+00 3.30E+00 -1.20E+00 1.30E+01 July-03 2.80E+02 4.60E+00 6.93E+02 5.00E+00 4.20E-01 1.54E+00 -1.70E-01 1.80E+00 -1.OOE-01 5.60E+00 November-03 O.OOE+00 2.1 OE+00 2.OOE+00 2.1 OE+00 -1.80E+00 2.10E+O0 -5.OOE-01 2.1 OE+00 -1.40E+00 6.58E+0O March-04 -1.70E+00 2.30E+00 O.OOE+00 2.15E+00 -6.OOE-01 2.30E+00 1.OOE-01 2.15E+00 -1.OOE+00 7.07E+00 May-04 -1.90E+00 2.47E+00 8.OOE-01 2.80E+00 2.OOE-01 2.15E+00 O.OOE+00 1.81 E+00 6.OOE+00 5.43E+00 August-04 6.OOE-01 1.97E+00 -3.00E-01 2.14E+00 -4.OOE-01 1.81 E+00 1.20E+00 1.81 E+00 -3.OOE+00 5.26E+00 November-04 -4.OOE-01 3.29E+00 3.OOE-01 2.30E+00 -1.OOE+00 2.14E+00 7.OOE-01 2.30E+00 1.30E+00 7.24E+00 November-04 -2.30E+00 3.13E+00 2.1 OE+00 3.13E+00 2.70E+00 2.14E+00 2.20E+00 2.80E+00 -2.30E+00 8.23E+O0 August-03 -2.10E+00 5.90E+00 1.20E+00 5.1OE+00 4.OOE-01 5.30E+00 -8.00E-01 4.90E+00 -5.40E+00 1.50E+01 November-03 No Sample Collected March-04 -1.50E+00 2.63E+00 -4.OOE-01 2.63E+00 -1.1 OE+00 1.81E+00 4.OOE-01 1.81 E+00 3.20E+00 5.92E+00 May-04 No Sample Collected August-04 -1.80E+00 1.81E+00 O.OOE+00 1.65E+00 3.OOE-01 1.65E+00 5.OOE-01 1.81E+00 1.30E+00 5.10E+00 November-04 No Sample Collected The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
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TA _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts 1WelVlpad '.2 Cs-1 34 Lc I Cs137 Lc I Eu-152 Lc I Eu-154 Lc I Eu-155 Lc July-03 3.OOE-01 4.20E+00 -3.OOE-01 3.80E+00 1.OOE-01 1.1OE+01 -8.OOE-01 1.20E+01 3.80E+00 1.60E+01 November-03 O.OOE+00 2.80E+00 O.OOE+00 2.30E+00 3.OOE-01 5.80E+00 -6.20E+00 8.88E+00 4.OOE-01 7.1 OE+00 March-04 -2.60E+00 2.30E+00 2.20E+00 2.30E+00 1.90E+00 6.25E+00 -3.OOE-01 5.26E+00 9.20E+00 1.05E+01 May-04 6.OOE-01 2.96E+00 -6.OOE-01 3.45E+00 -5.30E+00 6.58E+00 3.OOE+00 1.OOE+01 -3.90E+00 8.88E+00 May-04 -1.80E+00 2.15E+00 1.OOE+00 1.97E+00 -1.40E+00 5.26E+00 3.30E+00 4.93E+00 2.90E+00 7.73E+00 August-04 5.OOE-01 2.30E+00 -1.30E+00 1.97E+00 -1.80E+00 5.43E+00 -6.80E+00 6.74E+00 1.OOE+00 8.39E+00 November-04 August-03 November-03 March-04 May-04 August-04 November-04 July-03 O.OOE+00 4.80E+00 -1.OOE-01 3.80E+00 5.OOE-01 1.1OE+01 -1.OOE-01 1.30E+01 -7.OOE-01 1.80E+01 July-03 1.60E+00 2.OOE+00 7.30E+02 6.60E+00 3.OOE-01 3.80E+00 4.OOE-01 3.OOE+00 -9.20E+00 9.20E+00 November-03 -1.OOE-01 2.30E+00 5.OOE-01 2.80E+00 6.20E+00 5.59E+00 2.30E+00 6.91 E+00 -8.90E+00 8.39E+00 March-04 O.OOE+00 1.97E+00 -2.OOE-01 1.97E+00 -9.OOE-01 5.92E+00 -1.70E+00 6.09E+00 1.04E+01 9.21 E+00 May-04 4.OOE-01 2.15E+00 -3.20E+00 2.63E+00 -7.OOE-01 6.09E+00 -3.30E+00 6.14E+04 5.60E+00 8.23E+00 August-04 -1.60E+00 2.14E+00 -7.OOE-01 1.97E+00 -1.OOE-01 5.43E+00 -1.OOE-01 4.61 E+00 -7.70E+00 8.39E+00 November-04 -2.OOE-01 2.96E+00 1.30E+00 2.30E+00 4.OOE-01 6.42E+00 -8.OOE-01 7.40E+00 -1.80E+00 8.39E+00 November-04 3.OOE-01 3.29E+00 2.60E+00 3.13E+00 -4.60E+00 7.40E+00 1.60E+00 8.55E+00 5.20E+00 9.87E+00 August-03 -1.40E+00 6.50E+00 6.OOE-01 5.60E+00 -1.20E+00 1.20E+01 2.50E+00 1.30E+01 7.20E+00 1.60E+01 November-03 March-04 4.OOE-01 2.80E+00 1,30E+00 2.30E+00 5.30E+00 6.74E+00 1.90E+00 6.74E+00 -7.OOE+00 1.33E+01 May-04 August-04 -2.OOE-01 1.97E+00 2.OOE-01 1.97E+00 7.OOE-01 5.59E+00 -2.80E+00 4.94E+00 -4.80E+00 7.57E+00 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
! (
TA.LE 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts July-03 -1.93E+02 2.80E+02 2.OOE+00 3.30E+00 1.41 E+01 1.90E+00 4.OOE+00 5.40E+01 -5.OOE-01 8.40E+00 November-03 1.40E+02 2.14E+02 -1.51E+00 1.15E+00 8.20E+00 1.09E+00 3.70E+01 3.45E+01 3.80E+00 4.60E+00 March-04 5.30E+01 1.48E+02 3.70E-01 9.71 E-01 6.24E+00 1.07E+00 -9.OOE+00 3.45E+01 4.30E+00 3.95E+00 May-04 4.OOE+02 2.15E+02 -9.20E-01 1.12E+00 7.70E+00 2.15E+00 6.OOE+00 4.28E+01 1.OOE-01 4.28E+00 May-04 6.30E+02 2.15E+02 5.50E-01 1.27E+00 4.20E+00 1.81E+00 6.OOE+00 3.95E+01 -1.10E+00 2.63E+00 August-04 -3.OOE+01 1.81E+02 1.OOE-02 8.06E-01 7.22E+00 1.30E+00 3.20E+01 4.11E+01 -4.OOE-01 4.61E+00 November-04 August-03 1.1 OE+02 2.60E+02 1.54E+00 1.27E+00 2.44E+00 1.51 E+00 November-03 March-04 8.OOE+01 1.81E+02 O.OOE+00 7.24E-01 4.30E+00 1.81 E+00 May-04 August-04 -1.30E+02 1.81E+02 1.08E+00 9.38E-01 4.20E+00 1.65E+00 November-04 July-03 1.33E+02 2.70E+02 -9.OOE-01 3.80E+00 1.90E+01 1.90E+00 -2.20E+01 7.30E+01 2.40E+00 8.90E+00 July-03 8.32E+03 2.80E+02 1.75E+02 7.90E+00 1.55E+02 6.70E+00 1.89E+05 6.60E+01 5.77E+03 2.80E+01 November-03 4.30E+02 2.14E+02 -8.70E-01 1.60E+00 1.14E+01 1.25E+00 O.OOE+00 3.45E+01 1.70E+00 4.11 E+00 March-04 2.79E+02 1.61 E+02 -2.60E-01 1.46E+00 1.06E+01 1.48E+00 -8.OOE+00 3.29E+01 1.80E+00 6.74E+00 May-04 1.20E+02 1.97E+02 4.20E-01 1.38E+00 8.36E+00 1.53E+00 1.20E+01 3.62E+01 -8.OOE-01 4.28E+00 August-04 7.50E+02 1.81 E+02 1.50E-01 1.09E+00 9.81 E+00 1.45E+00 1.80E+01 3.13E+01 -1.OOE+00 4.94E+00 November-04 7.50E+02 1.81 E+02 2.40E+00 2.14E+00 6.60E+00 1.97E+00 1.80E+01 3.13E+01 5.OOE-01 5.59E+00 November-04 7.60E+02 1.81 E+02 3.70E+00 2.47E+00 8.30E+00 2.47E+00 4.20E+01 3.78E+01 1.70E+00 4.77E+00 August-03 -8.OOE+01 3.60E+02 9.OOE-01 2.20E+00 2.60E+01 1.60E+00 November-03 March-04 O.OOE+00 1.56E+02 1.50E+00 1.81E+00 1.28E+01 1.53E+00 May-04 August-04 1.OOE+01 1.65E+02 2.OOE+00 1.97E+00 1.28E+01 2.30E+00 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
I T_,*LE 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Ni-63 Lc Sr-90 Lc Tc-99 Lc Pu-238 Lc Pu-239/240 Lc 4C,B July-03 7.OOE-01 7.OOE+00 1.20E+00 3.90E+00 -3.70E-03 2.OOE-01 1.06E-01 2.OOE-01 November-03 8.80E+00 8.55E+00 4.OOE-01 1.97E+00 1.20E+00 4.77E+00 7.80E-02 1.53E-01 5.20E-02 1.07E-01 March-04 -2.IOE+00 4.11E+00 -6.OOE-01 2.30E+00 -4.70E+00 6.74E+00 O.OOE+00 2.14E-03 4.30E-02 1.43E-01 May-04 O.OOE+00 4.28E+00 1.60E+00 1.81 E+00 4.OOE-01 4.77E+00 6.20E-03 1.09E-03 -7.90E-04 9.21 E-04 May-04 8.00E-01 4.44E+00 3.OOE-01 1.65E+00 -2.20E+00 5.43E+00 -1.05E-03 1.22E-03 -5.20E-04 8.55E-04 August-04 -7.OOE-01 4.94E+00 -3.20E+00 1.97E+00 2.20E+00 4.77E+00 O.OOE+00 2.47E-04 -1.OOE-03 1.15E-03 November-04 KC B August-03 November-03 March-04 May-04 August-04 November-04 July-03 -1.10E+00 7.70E+00 -1.30E+00 3.50E+00 -8.OOE-03 2.40E-01 1.08E-01 2.50E-01 July-03 5.71E+02 2.30E+01 1.04E+03 1.40E+01 1.04E+01 5.OOE-01 9.90E-02 2.40E-01 November-03 3.90E+00 6.10E+00 5.00E-01 1.97E+00 -4.30E+00 4.77E+00 3.00E-02 1.35E-01 2.OOE-01 2.14E-01 March-04 7.70E+00 4.44E+00 6.OOE-01 2.14E+00 -3.00E+00 5.43E+00 9.00E-03 1.97E-02 -3.90E-03 2.47E-03 May-04 -2.00E+00 4.11E+00 1.80E+00 2.15E+00 1.90E+00 5.26E+00 -2.70E-04 3.13E-04 9.00E-03 1.65E-02 August-04 1.OOE+00 5.43E+00 -2.90E+00 1.81E+00 3.10E+00 6.91E+00 -5.40E-04 8.88E-04 -1.08E-03 1.25E-03 November-04 -4.OOE-01 5.43E+00 -2.00E-01 2.14E+00 1.70E+00 4.61E+00 -5.50E-03 6.42E-03 -1.81E-02 9.05E-03 November-04 -3.10E+00 5.26E+00 -1.60E+00 1.81E+00 5.30E+00 4.77E+00 O.OOE+00 1.81E-03 5.90E-02 1.12E-01 August-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
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TA__E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Pu-241 Lc Am-241 Lc F Cm-242 Lc Cm-243/4 Lc July-03 1.50E+00 3.70E+00 1.40E-01 3.70E-01 O.OOE+00 4.90E-02 O.OOE+00 4.60E-02 November-03 -9.80E-01 1.14E+00 -2.60E-02 1.36E-01 -6.40E-03 1.10E-02 -1.66E-02 1.602-02 March-04 -3.30E+00 1.97E+00 -1.59E-01 1.20E-01 7.00E-03 2.80E-02 -1.95E-02 1.43E-02 May-04 -2.30E+00 2.80E+00 -1.59E-02 1.60E-02 O.OOE+00 1.38E-04 -9.10E-04 1.05E-03 May-04 -3.40E+00 6.25E+00 -1.50E-02 2.15E-02 5.40E-03 1.OOE-02 O.OOE+00 1.41E-04 August-04 -3.1OE+00 2.80E+00 -1.63E-02 1.27E-02 O.OOE+00 9.21E-05 -3.30E-04 5.43E-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 July-03 -1.OOE-01 5.40E+00 1.OOE-01 3.80E-01 3.20E-02 7.70E-02 2.70E-02 8.40E-02 July-03 5.50E+02 1.60E+01 5.15E+01 5.90E-01 2.90E-02 7.80E-02 O.OOE+00 7.30E-02 November-03 2.27E+00 1.35E+00 1.30E-01 1.65E-01 O.OOE+00 4.27E-04 O.OOE+00 4.1OE-04 March-04 -2.80E+00 3.62E+00 -2.20E-02 2.14E-02 1.00E-02 1.81E-02 -5.30E-04 8.72E-04 May-04 -2.90E+00 3.78E+00 -1.50E-02 2.15E-03 O.OOE+00 1.53E-04 -4.80E-04 7.90E-04 August-04 -2.10E+00 2.30E+00 -1.40E-02 2.14E-02 O.OOE+00 1.81E-04 -6.70E-04 1.10E-03 November-04 8.00E-01 5.10E+00 -7.90E-02 8.23E-02 -7.80E-03 7.40E-03 -4.60E-03 5.26E-03 November-04 -3.40E+00 5.59E+00 -9.1OE-02 8.23E-02 1.30E-02 1.79E-01 O.OOE+00 4.28E-04 August-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
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TA_ _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts August-03 November-03 No Sample Collected March-04 May-04 No Sample Collected August-04 November-04 No Sample Collected August-03 6.OOE-01 4.50E+00 -9.OOE-01 5.90E+00 -2.20E-01 3.90E+00 -1.OOE+00 5.10E+00 1.20E+00 1.30E+01 November-03 1.00E-01 2.14E+00 -2.30E+00 3.62E+00 7.OOE-01 2.14E+00 -8.OOE-01 2.30E+00 -6.20E+00 6.42E+00 March-04 -8.00E-01 2.47E+00 1.90E+00 2.63E+00 3.OOE-01 1.97E+00 3.30E+00 1.97E+00 2.80E+00 6.42E+00 May-04 2.60E+00 2.63E+00 2.OOE-01 1.81 E+00 -5.00E-01 1.65E+00 2.80E+00 2.30E+00 5.50E+00 6.25E+00 August-04 -1.20E+00 2.47E+00 -1.10E+00 2.47E+00 7.OOE-01 1.97E+00 -7.00E-01 1.81 E+00 5.50E+00 5.76E+00 November-04 No Sample Collected August-03 4.OOE-01 1.97E+00 6.00E-01 3.13E+00 -1.OOE+00 2.14E+00 -1.OOE+00 1.97E+00 -1.OOE+00 5.59E+00 November-03 -3.00E-01 1.81E+00 1.20E+00 1.81 E+00 -5.50E-01 1.50E+00 -9.OOE-01 1.48E+00 -2.20E+00 4.28E+00 March-04 -1.80E+00 2.30E+00 -5.00E-01 2.80E+00 -2.60E+00 2.14E+00 -1.30E+00 1.97E+00 O.OOE+00 5.92E+00 March-04 -4.00E-01 3.78E+00 1.70E+00 2.80E+00 2.OOE+00 2.96E+00 -1.1OE+00 2.14E+00 -2.40E+00 6.91 E+00 May-04 -4.10E+00 3.95E+00 -1.50E+00 1.81E+00 -5.OOE-01 3.45E+00 O.OOE+00 3.13E+00 4.90E+00 8.88E+00 August-04 Well Abandoned in July 2004 August-03 -1.40E+00 6.10E+00 -8.00E-01 5.40E+00 1.30E+00 3.90E+00 -8.OOE-01 4.90E+00 -2.40E+00 1.60E+01 August-03 3.23E+02 4.70E+00 8.26E+02 2.20E+00 1.35E+00 2.80E+00 1.33E+00 3.20E+00 1.OOE+00 9.90E+00 August-03 -1.70E+00 7.00E+00 -7.00E-01 5.70E+00 6.OOE-01 5.20E+00 -1.OOE+00 5.1OE+00 -4.20E+00 1.50E+01 November-03 -1.40E+00 2.30E+00 -7.00E-01 2.30E+00 2.OOE-01 2.14E+00 2.00E-01 1.81 E+00 -5.OOE-01 5.43E+00 March-04 No Sample Collected May-04 -1.60E+00 2.47E+00 2.00E-01 3.45E+00 -9.OOE-01 2.63E+00 O.OOE+00 2.30E+00 1.70E+00 7.73E+00 August-04 Well Abandoned in July 2004 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
tI Tk. _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Cs-134 Lc CS137 Eu-152 Lc Eu-154 Lc Eu-155 Lc August-03 November-03 March-04 May-04 August-04 November-04 August-03 -2.90E+00 6.20E+00 -3.OOE-01 5.40E+00 -2.1OE+00 1.20E+01 -5.50E+00 1.90E+01 6.40E+O0 1.90E+01 November-03 0.OOE+00 2.80E+00 4.OOE-01 2.30E+00 2.80E+00 6.42E+00 -1.60E+00 5.76E+00 -4.30E+00 7.90E+00 March-04 7.OOE-01 2.63E+00 6.OOE-01 2.14E+00 -6.OOE-01 5.76E+00 1.04E+01 7.40E+00 1.20E+00 6.91 E+00 May-04 1.70E+00 2.96E+00 2.OOE-01 2.15E+00 -6.OOE-01 5.76E+00 -6.OOE+00 6.91 E+00 4.90E+00 9.38E+00 August-04 1.80E+00 1.97E+00 -2.OOE-01 2.47E+00 2.90E+00 4.11 E+00 2.OOE+00 7.57E+00 -2.20E+00 4.61 E+00 November-04 August-03 1.30E+00 2.30E+00 -1.OOE+00 2.63E+00 2.1 OE+00 4.77E+00 3.90E+00 7.73E+00 4.60E+00 7.24E+00 November-03 7.OOE-01 1.65E+00 -1.16E+00 1.43E+00 -2.1 OE+00 4.11 E+00 2.OOE-01 4.77E+00 7.OOE-01 6.09E+00 March-04 -1.50E+00 2.47E+00 -2.OOE+00 2.63E+00 2.90E+00 4.77E+00 -1.30E+00 8.06E+00 7.1 OE+00 7.57E+00 March-04 1.OOE+00 2.96E+00 1.60E+00 2.80E+00 5.80E+00 6.58E+00 O.OOE+00 9.54E+00 7.50E+00 9.05E+00 May-04 -2.40E+00 3.62E+00 O.OOE+00 3.13E+00 6.50E+O0 7.90E+O0 1.25E+01 1.09E+01 -1.09E+01 9.87E+00 August-04 August-03 1.OOE+00 4.40E+00 -1.1 OE+00 5.40E+00 -3.OOE+00 1.40E+01 1.70E+00 1.40E+01 7.80E+00 1.70E+01 August-03 -1.OOE+00 4.OOE+00 8.56E+02 4.20E+00 9.OOE-01 7.50E+00 2.60E+00 5.60E+00 4.IOE+00 1.60E+01 August-03 -1.40E+00 7.OOE+00 3.OOE-01 6.20E+00 3.40E+00 9.50E+00 3.30E+00 1.20E+01 1.20E+00 1.40E+01 November-03 3.20E+00 2.30E+00 1.80E+00 2.47E+00 2.80E+00 4.61 E+00 -4.60E+00 8.06E+00 2.50E+00 6.58E+00 March-04 May-04 -1.OOE+00 3.78E+00 -1.10E+00 3.13E+00 2.50E+00 6.74E+00 -4.OOE-01 5.76E+00 8.30E+00 9.71 E+00 August-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
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TA__E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts March-04 8.OOE+01 1.50E+02 1.80E+00 1.97E+00 1.77E+01 1.65E+00 May-04 August-04 1.1 OE+02 1.65E+02 -1.17E+00 7.73E-01 1.37E+01 2.63E+00 November-04 August-03 2.33E+03 3.60E+02 -5.70E-01 9.20E-01 6.70E+00 1.20E+00 7.OOE+00 3.20E+01 2.40E+00 6.OOE+00 November-03 2.62E+03 1.97E+02 2.30E-01 1.41 E+00 7.60E+00 1.81 E+00 -1.80E+01 4.28E+01 2.20E+00 5.10E+00 March-04 2.40E+03 2.14E+02 1.80E+00 1.97E+00 7.OOE+00 2.14E+00 3.40E+01 2.47E+01 -2.40E+00 5.43E+00 May-04 1.74E+03 2.15E+02 1.60E+00 1.65E+00 8.30E+00 2.15E+00 3.90E+01 5.92E+01 O.OOE+00 4.44E+00 August-04 2.18E+03 1.97E+02 2.30E+00 2.14E+00 9.60E+00 2.30E+00 1.OOE+00 3.62E+01 3.30E+00 4.61 E+00 November-04 August-03 9.00E+02 2.60E+02 1.50E+00 1.81 E+00 1.91E+01 2.47E+00 4.00E+01 5.00E+01 9.70E+00 8.20E+00 November-03 1.21 E+03 1.97E+02 3.00E-01 1.05E+00 1.25E+01 1.97E+00 5.00E+00 2.47E+01 5.90E+00 4.61 E+00 March-04 8.60E+02 1.97E+02 1.17E+01 4.94E+00 5.17E+01 4.11 E+00 2.80E+01 3.95E+01 6.40E+00 1.60E+01 March-04 8.60E+02 1.97E+02 8.60E+00 4.44E+00 5.23E+01 4.11 E+00 -1.30E+01 3.95E+01 -5.OOE+00 1.48E+01 May-04 8.00E+02 2.15E+02 3.40E+00 2.30E+00 2.00E+01 2.96E+00 1.50E+01 3.29E+01 -2.40E+00 7.24E+00 August-04 ACugut1-0 August-03 1.40E+02 1.99E+02 -1.27E+00 1.74E+00 1.31 E+01 1.54E+00 -1.10E+01 3.40E+01 3.1 OE+00 5.80E+00 August-03 6.07E+03 3.60E+02 1.66E+02 2.40E+01 1.86E+02 1.84E+01 2.40E+05 1.30E+02 6.17E+03 1.28E+02 August-03 3.00E+02 1.97E+02 1.17E+00 1.94E+00 1.38E+01 1.56E+00 -2.OOE+01 3.20E+01 -2.70E+00 6.40E+00 November-03 2.12E+02 1.60E+02 8.70E+00 2.30E+00 3.30E+01 1.53E+00 9.00E+00 2.96E+01 -6.1 OE+00 6.25E+00 March-04 May-04 1.68E+03 2.30E+02 3.00E-01 1.65E+00 1.39E+01 1.97E+00 -1.30E+01 3.62E+01 -3.60E+00 3.78E+00 August-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
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! TA _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts IVVeZ; L Ni-63 Lc Sr-9/ Lc Tc-99 Lc Pu-238 Lc Pu-239/240 Lc August-03 November-03 March-04 May-04 August-04 November-04 August-03 2.OOE-01 4.60E+00 2.20E+00 2.80E+00 4.1 OE-02 1.20E-01 -1.17E-02 1.66E-02 November-03 O.OOE+00 5.76E+00 -1.20E+00 1.81E+00 -2.OOE+00 5.43E+00 4.80E-02 1.09E-01 6.40E-02 1.05E-01 March-04 1.50E+00 5.43E+00 O.OOE+00 1.97E+00 -3.80E+00 6.42E+00 -1.16E-03 1.35E-03 -5.80E-04 9.54E-04 May-04 1.20E+00 4.44E+00 -1.40E+00 1.81E+00 -1.20E+00 4.94E+00 -1.05E-03 1.22E-03 1.05E-02 1.27E-02 August-04 2.OOE-01 5.26E+00 -1.40E+00 1.81 E+00 -7.OOE-01 7.07E+00 -1.38E-03 1.32E-03 -1.38E-03 1.32E-03 November-04 August-03 -4.40E+00 5.26E+00 2.51 E+00 1.86E+00 O.OOE+00 1.80E-03 1.60E-01 1.92E-01 November-03 6.30E+00 6.42E+00 9.OOE-01 2.14E+00 -2.1 OE+00 7.24E+00 -1.80E-02 8.06E-02 8.30E-02 1.09E-01 March-04 8.OOE-01 5.1 OE+00 -9.OOE-01 2.14E+00 2.20E+00 6.09E+00 O.OOE+00 1.60E-04 -5.70E-04 9.38E-04 March-04 4.OOE-01 5.1 OE+00 -1.20E+00 2.14E+00 -4.30E+00 5.43E+00 3.70E-03 1.05E-02 -1.90E-03 1.81E-03 May-04 4.OOE-01 5.59E+00 5.OOE-01 1.97E+00 -4.OOE+00 4.94E+00 9.OOE-03 1.81 E-02 -9.1 OE-04 5.26E-04 August-04 August-03 -1.50E+00 4.40E+00 -1.70E+00 2.60E+00 3.90E-02 1.12E-01 1.61E-01 1.58E-01 August-03 6.06E+02 3.80E+01 1.16E+03 5.80E+01 1.23E+01 1.88E+00 2.10E-01 2.60E-01 August-03 -8.OOE-01 5.20E+00 5.OOE-01 2.60E+00 -5.1 OE-03 1.02E-02 3.60E-02 1.04E-01 November-03 -1.1 OE+00 4.77E+00 -1.OOE+00 2.14E+00 2.20E+00 3.13E+00 -9.50E-03 1.56E-02 1.17E-01 1.48E-01 March-04 May-04 3.40E+00 4.77E+00 1.90E+00 1.97E+00 -1.90E+00 4.11E+00 0.OOE+00 .00015*1.6-1 -1.64E-03 1.56E-03 August-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
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T/-_.E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts August-03 November-03 March-04 May-04 August-04 November-04 tCB ,
August-03 3.1 OE+00 2.80E+00 2.80E-01 2.14E-01 -6.60E-03 1.09E-02 -1.80E-02 1.65E-02 November-03 6.00E-01 1.65E+00 -7.1 0E-02 1.38E-01 2.40E-02 3.95E-02 O.OOE+00 5.10E-04 March-04 -3.OOE+00 3.45E+00 -1.70E-02 2.14E-02 -7.30E-04 1.20E-03 O.OOE+00 1.55E-04 May-04 -1.60E+00 2.63E+00 -3.40E-02 2.15E-02 -6.20E-04 1.02E-03 O.OOE+00 1.12E-04 August-04 -1.50E+00 2.14E+00 -1.75E-01 1.25E-01 -8.20E-03 1.35E-02 -6.40E-03 1.05E-02 November-04 August-03 -2.20E+00 2.80E+00 -7.00E-02 2.00E-01 -1.60E-02 2.20E-02 -1.00E-03 4.40E-02 November-03 -5.00E-01 4.44E+00 -2.29E-01 1.14E-01 1.30E-02 3.78E-02 O.OOE+00 4.18E-04 Pb- & Bi-214 (7.85 & 15 pCi/L)
March-04 -1.60E+00 2.47E+00 -2.30E-02 1.97E-02 -1.50E-03 1.65E-03 -6.20E-04 1.02E-03 March-04 -2.00E+00 3.29E+00 -5.00E-03 2.80E-02 O.OOE+00 1.81 E-04 O.OOE+00 1.65E-04 May-04 -7.00E-01 2.63E+00 -2.04E-02 1.30E+02 -2.90E-04 2.63E-04 4.50E-03 7.73E-03 August-04 August-03 1.30E+00 2.20E+00 1.32E-01 1.63E-01 1.50E-02 2.47E-02 O.OOE+00 3.62E-04 August-03 5.15E+02 1.80E+01 5.99E+01 1.97E+00 2.20E-02 3.62E+00 -1.35E-02 -1.57E-02 August-03 1.00E+00 2.20E+00 2.70E-01 1.81E-01 O.OOE+00 3.95E-04 -9.20E-03 1.07E-02 November-03 1.60E+00 3.45E+00 -2.15E-01 1.17E-01 O.OOE+00 6.42E-04 O.OOE+00 4.94E-04 Cr-51 (48.5 pCi/L) and March-04 Ra-226 (55.7 pCi/L)
May-04 4.20E+00 4.28E+00 -2.60E-02 2.96E-02 1.50E-02 2.47E-02 -7.80E-04 1.28E-03 August-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
(
!t TA. t9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts August-03 -3.40E+00 3.29E+00 -2.20E+00 4.28E+00 -2.80E+00 2.96E+00 2.00E-01 2.63E+00 1.70E+00 8.72E+00 November-03 -6.OOE-01 2.96E+00 1.50E+00 2.96E+00 -1.OOE+00 2.30E+00 1.OOE+00 2.47E+00 -3.90E+00 6.09E+00 March-04 -7.OOE-01 3.45E+00 -1.20E+00 4.11 E+00 1.OOE+00 2.47E+00 1.20E+00 2.47E+00 -1.OOE+00 7.90E+00 May-04 8.OOE-01 2.15E+00 3.00E-01 2.47E+00 5.00E-01 1.97E+00 9.00E-01 2.15E+00 9.70E+00 7.07E+00 August-04 1.60E+00 2.47E+00 4.00E-01 2.96E+00 1.50E+00 2.14E+00 O.OOE+00 2.14E+00 -6.90E+00 5.43E+00 November-04 No Sample Collected August-03 -6.30E+00 3.45E+00 1.90E+00 3.13E+00 -6.00E-01 2.80E+00 2.00E-01 2.63E+00 6.00E-01 8.39E+00 November-03 No Sample Collected March-04 May-04 No Sample Collected August-04 November-04 No Sample Collected August-03 -6.90E-01 4.50E+00 -3.20E+00 7.50E+00 5.00E-01 3.80E+00 1.70E+00 4.50E+00 2.90E+00 1.30E+01 November-03 2.OOE-01 2.47E+00 8.00E-01 2.96E+00 4.00E-01 2.47E+00 3.00E-01 1.97E+00 1.30E+00 6.74E+00 March-04 2.00E-01 1.97E+00 3.00E-01 2.14E+00 3.20E-01 1.63E+00 -1.40E+00 1.81E+00 -3.70E+00 6.09E+00 May-04 -2.1 OE+00 2.30E+00 2.30E+00 3.13E+00 -7.OOE-01 2.63E+00 -8.00E-01 2.15E+00 -2.40E+00 7.07E+00 August-04 -7.40E-01 1.28E+00 6.10E-01 1.30E+00 -1.60E-01 1.04E+00 3.20E-01 1.27E+00 -8.00E-01 3.62E+00 November-04 1.OOE-01 3.29E+00 -1.70E+00 3.78E+00 -3.00E-01 2.63E+00 -2.00E-01 2.30E+00 O.OOE+00 8.22E+00 August-03 November-03 No Sample Collected March-04 May-04 No Sample Collected August-04 November-04 No Sample Collected The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
i i Tt _E9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts I.W e1.1
'4 j ,11
, -,,IR an d I '
11'
'.I-VII %I Cs-1 34 Lc I Cs137 Lc I Eu-152 Lc I Eu-154 Lc _ Eu-155 Lc
'~§_ I August-03 2.OOE-01 3.29E+00 -2.70E+00 3.29E+00 -8.OOE-01 6.09E+00 -3.OOE-01 9.05E+00 -1.20E+00 9.21 E+00 November-03 -1.50E+00 2.96E+00 -7.OOE-01 2.63E+00 1.30E+00 6.58E+00 -6.20E+00 7.24E+00 -3.50E+00 7.07E+00 March-04 1.80E+00 3.29E+00 -2.80E+00 3.45E+00 1.70E+00 6.58E+00 5.OOE+00 9.87E+00 -6.OOE-01 8.88E+00 May-04 -1.30E+00 2.15E+00 -1.90E+00 2.15E+00 3.70E+00 5.76E+00 -3.90E+00 6.42E+00 4.OOE-01 8.88E+00 August-04 -2.50E+00 2.47E+O0 -1.80E+00 1.81 E+00 -1.80E+00 5.26E+00 -2.20E+00 4.44E+00 2.30E+00 6.91 E+00 November-04
'A August-03 1.30E+00 2.80E+00 -1.90E+00 3.13E+00 -7.10E+00 6.42E+00 O.OOE+00 8.55E+00 2.60E+00 9.38E+00 November-03 March-04 May-04 August-04 November-04 August-03 -1.20E+00 6.OOE+00 -1.20E+00 5.30E+00 3.20E+00 1.40E+01 4.50E+00 1.40E+01 1.1OE+00 1.90E+01 November-03 1.90E+00 2.63E+00 -2.20E+00 2.30E+00 O.OOE+00 3.78E+00 -1.11E+01 8.55E+00 7.OOE-01 5.43E+00 March-04 O.OOE+00 2.30E+00 -3.OOE-01 1.81 E+00 -2.60E+00 5.92E+00 4.30E+00 6.09E+00 4.40E+00 9.05E+00 May-04 -1.40E+00 2.96E+00 8.OOE-01 1.97E+00 -3.60E+00 5.1 OE+00 5.50E+00 6.74E+00 -1.30E+00 7.24E+00 August-04 -1.13E+00 1.46E+00 -1.17E+00 1.28E+00 -4.50E+00 3.62E+00 -1.1OE+00 2.63E+00 -6.OOE-01 5.26E+00 November-04 -1.70E+00 3.45E+00 7.OOE-01 2.14E+00 -2.60E+00 6.74E+00 -3.OOE+00 9.05E+00 -1.40E+00 8.39E+00 August-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
I TA_..E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts 1.50E+02 2.60E+02 6.80E+00 2.47E+00 2.81 E+01 1.41 E+00 5.40E+02 1.65E+02 1.OOE+00 1.81 E+00 1.05E+01 1.81E+00 March-04 -1.07E+02 1.48E+02 2.80E+00 2.15E+00 1.56E+01 1.60E+00 May-04 -7.OOE+01 1.97E+02 2.OOE+00 1.81E+00 1.58E+01 2.15E+00 August-04 1.1 OE+02 1.81E+02 2.10E+00 1.97E+00 9.30E+00 2.14E+00 November-04 August-03 -5.OOE+01 3.60E+02 9.20E+00 4.20E+00 4.25E+01 3.80E+00 November-03 March-04 2.80E+01 1.58E+02 3.OOE-01 1.15E+00 1.43E+01 1.02E+00 May-04 August-04 -3.OOE+01 1.65E+02 5.50E+00 2.63E+00 1.06E+01 1.81 E+00 November-04 August-03 -6.OOE+01 3.60E+02 -3.OOE-01 2.40E+00 1.83E+01 1.80E+00 November-03 1.62E+02 1.58E+02 2.1 OE+00 6.91 E+00 5.91 E+01 4.28E+00 March-04 -6.80E+01 1.56E+02 1.60E+00 3.78E+00 2.76E+01 2.96E+00 May-04 -1.70E+02 1.97E+02 3.50E+00 2.15E+00 1.39E+01 1.46E+00 August-04 1.1 OE+02 1.65E+02 2.20E+00 1.97E+00 8.1OE+00 1.81 E+00 November-04 -3.OOE+01 1.65E+02 8.OOE-01 2.96E+00 2.84E+01 2.14E+00 August-03 6.OOE+01 3.60E+02 1.OOE-01 2.60E+00 1.77E+01 1.94E+00 November-03 March-04 2.92E+02 1.55E+02 1.12E+00 8.55E-01 1.14E+01 1.18E+00 May-04 August-04 1.60E+02 1.81E+02 2.30E+00 1.65E+00 1.41 E+01 2.47E+00 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
TA_ _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts August-03 November-03 March-04 May-04 August-04 November-04 August-03 -9.OOE-02 3.95E-02 -1.90E-02 1.81 E-02 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
(
TA__E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts August-03 November-03 March-04 May-04 August-04 November-04 August-03 -1.78E-01 8.55E-02 O.OOE+00 6.91E-04 O.OOE+00 3.29E-04 No Pb-210 or Pb/Bi214 found November-03 March-04 May-04 August-04 November-04 August-03 November-03 Pb-214(93.8 pCi/L), Pb-212(20.1 pCi/L), Ra-226 (55.5 pCi/L)
March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
I TA_ _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Lc Co-60 Lc Ag-108m Lc August-03 3.OOE-01 2.47E+00 4.OOE-01 2.63E+00 -1.20E+00 2.30E+00 1.30E+00 1.65E+00 -9.1OE+00 6.42E+00 November-03 4.20E+00 2.63E+00 -1.40E+00 2.47E+00 -1.OOE+00 1.81 E+00 -1.20E+00 1.97E+00 6.OOE+00 7.57E+00 March-04 No Sample Collected May-04 3.OOE-01 1.81E+00 3.30E+00 2.80E+00 -9.OOE-01 2.47E+00 4.OOE-01 1.97E+00 -4.70E+00 6.91 E+00 September-04 -4.30E+00 3.29E+00 3.90E+00 3.62E+00 -1.30E+00 1.81 E+00 -2.OOE-01 2.30E+00 1.60E+00 6.25E+00 November-04 -1.1 OE+00 2.30E+00 1.80E+00 2.47E+00 -2.OOE-01 2.14E+00 -2.OOE-01 2.30E+00 -1.60E+00 7.40E+00 July-03 -1.OOE-01 5.80E+00 2.40E+00 4.20E+00 1.OOE+00 5.90E+00 -7.OOE-01 4.90E+00 -5.OOE-01 1.60E+01 July-03 7.OOE-01 4.1 OE+00 -6.OOE-01 4.1 OE+00 4.30E-01 3.1 OE+00 -3.90E-01 3.60E+00 -3.30E+00 1.20E+01 November-03 3.OOE-01 2.47E+00 -1.20E+00 2.63E+00 -2.50E+00 2.63E+00 5.OOE-01 1.97E+00 -6.70E+00 6.25E+00 March-04 -1.80E+00 2.80E+00 5.50E+00 3.62E+00 1.80E+00 2.30E+00 -1.40E+00 2.63E+00 4.30E+00 7.24E+00 May-04 -1.20E+00 2.47E+00 1.30E+00 2.80E+00 -1.40E+00 2.47E+00 -2.60E+00 2.63E+00 -4.OOE-01 8.23E+00 August-04 -7.OOE-01 2.47E+00 1.20E+00 2.30E+00 1.30E+00 2.14E+00 8.OOE-01 1.97E+00 1.OOE+00 5.76E+00 November-04 1.90E+00 3.45E+00 1.50E+00 2.80E+00 -2.OOE-01 2.14E+00 O.OOE+00 2.63E+00 1.1OE+00 8.39E+00 July-03 -1.30E+00 1.97E+00 8.OOE-01 2.63E+00 7.OOE-01 2.30E+00 6.OOE-01 1.97E+00 -2.OOE+00 6.09E+00 November-03 No Sample Collected March-04 -8.OOE-01 1.97E+00 1.OOE+00 2.47E+00 6.OOE-01 1.81 E+00 O.OOE+00 2.14E+00 1.60E+0O 4.77E+00 May-04 -1.10E+00 3.29E+00 -1.60E+00 3.62E+00 -4.OOE-01 2.96E+00 -1.60E+00 2.80E+00 -6.OOE+00 8.39E+00 May-04 1.40E+00 4.11E+00 4.70E-01 1.50E+00 -5.OOE-01 2.80E+00 1.90E+00 2.96E+00 -1.20E+00 7.90E+00 August-04 2.30E+00 3.13E+00 5.OOE-01 2.47E+00 1.30E+00 2.80E+00 -1.1OE+00 2.47E+00 -9.OOE-01 8.39E+00 November-04 No Sample Collected July-03 -1.08E+00 1.48E+00 O.OOE+00 1.61E+00 1.74E+00 1.43E+00 -2.70E-01 1.38E+00 -4.20E+00 4.61E+00 November-03 No Sample Collected March-04 -4.20E+00 2.47E+00 -4.OOE-01 2.80E+00 3.OOE-01 1.81E+00 3.00E-01 1.81E+00 4.80E+00 6.58E+00 May-04 No Sample Collected August-04 Well Abandoned in July 2004 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
(
TA _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts
-3.50E+00 2.80E+00 -1.60E+00 2.14E+00 2.20E+00 6.42E+00 -1.IOE+00 7.40E+00 4.00E+00 8.39E+00 November-03 1.00E-01 2.63E+00 -2.20E+00 2.63E+00 -3.20E+00 6.42E+00 1.50E+00 8.23E+00 2.10E+00 8.06E+00 March-04 May-04 9.00E-01 2.80E+00 O.OOE+00 2.47E+00 -2.40E+00 5.59E+00 1.80E+00 6.42E+00 5.60E+00 7.73E+00 September-04 1.90E+00 3.13E+00 -4.OOE-01 2.47E+00 -1.20E+00 5.76E+00 7.90E+00 8.23E+00 2.90E+00 8.39E+00 November-04 2.OOE-01 2.30E+00 -1.30E+00 2.63E+00 1.19E+01 7.73E+00 -6.60E+00 6.09E+00 5.30E+00 1.14E+01 July-03 1.OOE+00 6.30E+00 O.OOE+00 5.40E+00 -4.30E+00 1.20E+01 -1.50E+00 2.00E+01 8.00E-01 1.80E+01 July-03 5.00E-01 4.40E+00 -6.00E+00 3.90E+00 5.00E-01 1.OOE+01 -4.80E+00 1.30E+01 -6.00E-01 1.50E+01 November-03 1.20E+00 2.63E+00 -4.OOE-01 2.14E+00 4.60E+00 5.59E+00 1.1 OE+00 7.73E+00 5.70E+00 7.73E+00 March-04 -2.00E-01 2.96E+00 -2.30E+00 3.29E+00 2.30E+00 6.42E+00 -5.70E+00 9.05E+00 1.56E+01 9.38E+00 May-04 -1.30E+00 2.47E+00 -2.00E-01 2.96E+00 1.80E+00 8.72E+00 1.70E+00 6.42E+00 4.30E+00 1.20E+01 August-04 -1.OOE-01 2.80E+00 -1.20E+00 2.14E+00 O.OOE+00 4.44E+00 4.40E+00 6.58E+00 -5.30E+00 5.92E+00 November-04 -5.00E-01 3.62E+00 1.60E+00 4.11 E+00 3.70E+00 6.42E+00 3.90E+00 9.38E+00 -4.20E+00 9.38E+00 July-03 -2.1OE+00 2.30E+00 -6.00E-01 2.30E+00 1.80E+00 5.26E+00 2.70E+00 8.39E+00 -3.30E+00 7.90E+00 November-03 March-04 6.00E-01 2.14E+00 O.OOE+00 2.14E+00 -8.00E-01 5.76E+00 9.00E-01 6.91 E+00 1.OOE+00 8.06E+00 May-04 4.00E-01 2.96E+00 -5.00E-01 2.96E+00 1.60E+00 7.07E+00 -4.1 OE+00 6.74E+00 2.1 OE+00 9.21 E+00 May-04 1.90E+00 4.11 E+00 -1.1OE+00 3.78E+00 -4.90E+00 8.23E+00 7.20E+00 1.05E+01 3.30E+00 1.15E+01 August-04 -3.60E+00 2.96E+00 -4.60E+00 3.29E+00 -3.50E+00 7.07E+00 -1.80E+00 6.42E+00 6.90E+00 8.39E+00 November-04 July-03 -8.00E-01 1.65E+00 -1.93E+00 1.46E+00 -1.OOE+00 4.28E+00 -3.00E+00 4.28E+00 4.10E+00 6.42E+00 November-03 March-04 -1.30E+00 2.80E+00 1.30E+00 2.47E+00 -6.00E-01 5.92E+00 -4.40E+00 8.72E+00 1.00E+00 7.73E+00 May-04 August-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
Tk. _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts March-04 May-04 -2.90E+02 1.97E+02 2.90E-01 9.87E-01 5.38E+00 1.48E+00 September-04 -1.40E+02 1.81 E+02 5.20E-01 9.38E-01 6.90E+00 2.97E+00 November-04 1.50E+02 1.81E+02 1.40E+00 1.43E+00 7.30E+00 1.97E+00 July-03 -1.62E+02 2.70E+02 3.OOE-01 3.20E+00 1.1OE+01 1.90E+00 8.OOE+00 6.1OE+01 -3.OOE-01 9.80E+00 July-03 -3.50E+01 2.80E+02 -1.OOE-01 3.90E+00 1.20E+01 1.80E+00 -1.80E+00 2.80E+01 -1.1OE+00 9.60E+00 November-03 1.58E+02 1.56E+02 1.04E+00 1.30E+00 4.01 E+00 1.28E+00 -3.OOE+00 3.45E+01 1.70E+00 4.94E+00 March-04 1.50E+02 1.81 E+00 3.40E+00 2.14E+00 9.1OE+00 6.58E+00 -2.00E+00 1.97E+01 -4.OOE-01 5.26E+00 May-04 3.20E+02 2.15E+02 2.1 OE+00 1.81E+00 6.66E+00 1.58E+00 1.60E+01 4.28E+01 -3.30E+00 4.28E+00 August-04 1.OOE+01 1.65E+02 2.50E+00 2.14E+00 6.30E+00 2.14E+00 2.1OE+01 3.13E+01 9.OOE-01 4.44E+00 November-04 3.OOE+02 1.81 E+02 1.79E+00 1.61 E+00 5.60E+00 1.97E+00 1.60E+01 3.13E+01 -5.1 OE+00 4.61 E+00 July-03 3.80E+01 1.56E+02 2.50E+00 1.65E+00 1.13E+01 1.25E+00 November-03 March-04 2.02E+03 1.81E+02 9.90E-01 1.35E+00 6.71 E+00 1.35E+00 May-04 6.1 OE+02 2.15E+02 1.70E+00 1.97E+00 9.70E+00 2.30E+00 -3.40E+01 3.62E+01 -2.30E+00 6.74E+00 May-04 5.60E+02 2.15E+02 7.OOE-01 1.65E+00 8.1 OE+00 2.15E+00 -6.OOE+00 2.15E+01 O.OOE+00 6.91 E+00 August-04 1.02E+03 1.81E+02 1.54E+00 1.20E+00 7.60E+00 1.97E+00 November-04 July-03 1.OOE+02 1.56E+02 1.20E+00 1.97E+00 1.11E+01 1.22E+00 November-03 March-04 4.OOE+02 1.81E+02 2.30E-01 1.45E+00 7.OOE+00 2.14E+00 May-04 August-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
(
TA__E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Ni-63 Lc sr-go Lc Tc-99 Lc Pu-238 Lc lPu-239/240 Lc August-03 November-03 March-04 May-04 September-04 November-04 July-03 6.OOE-01 8.OOE+00 -6.OOE-01 3.40E+00 5.50E-02 1.50E-01 5.50E-02 1.50E-01 July-03 -4.80E+00 7.40E+00 5.70E-01 3.20E+00 O.OOE+00 1.70E-01 1.50E-01 3.20E-01 November-03 -8.OOE-01 5.1 OE+00 1.20E+00 1.97E+00 8.00E-01 5.59E+00 9.OOE-02 1.81E-01 7.OOE-02 1.81 E-01 March-04 2.80E+00 5.43E+00 1.70E+00 2.47E+00 -2.50E+00 3.95E+00 -1.23E-03 1.43E-03 -1.23E-03 1.43E-03 May-04 6.1 OE+00 6.25E+00 1.30E+00 1.97E+00 -2.OOE-01 4.94E+00 -5.40E-04 8.88E-04 7.90E-04 1.48E-02 August-04 2.20E+00 5.26E+00 -1.50E+00 1.65E+00 3.70E+00 6.25E+00 O.OOE+00 2.96E-04 -4.90E-04 8.06E-04 November-04 -8.OOE-01 5.76E+00 -1.OOE+00 2.14E+00 2.90E+00 4.77E+00 -5.50E-03 6.42E-03 -2.70E-03 4.44E-03 July-03 November-03 March-04 May-04 3.70E+00 6.25E+00 -9.OOE-01 2.15E+00 -2.10E+00 5.92E+00 8.70E-03 1.46E-02 -6.60E-04 4.11 E-04 May-04 6.60E+00 6.25E+00 1.10E+00 2.15E+00 -1.10E+00 5.92E+00 -4.70E-04 3.45E-04 -5.70E-04 3.78E-04 August-04 November-04 3
July-03 November-03 March-04 May-04 August-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
TA__E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts November-03 March-04 May-04 September-04 November-04 July-03 1.41 E+00 2.90E+00 2.20E-01 3.90E-01 O.OOE+00 5.OOE-02 1.40E-02 7.50E-02 July-03 1.60E+00 3.50E+00 2.30E-01 3.60E-01 -7.00E-03 1.20E-01 -3.30E-03 7.OOE-02 November-03 1.60E-01 1.46E+00 -1.63E-01 1.22E-01 4.70E-02 5.43E-02 2.90E-02 4.61 E-02 March-04 -4.60E+00 3.95E+00 -2.40E-02 1.97E-02 O.OOE+00 2.14E-04 O.OOE+00 1.81 E-04 May-04 -6.OOE-01 4.61 E+00 -2.OOE-02 1.97E-02 O.OOE+00 1.50E-04 -4.80E-04 7.90E-04 August-04 -1.30E+00 2.63E+00 -2.42E-01 1.25E-01 O.OOE+00 6.25E-04 -7.20E-03 1.18E-02 November-04 -4.OOE-01 5.92E+00 -9.80E-02 7.90E-02 1.70E-02 2.80E-02 3.OOE-02 3.45E-02 c.O:
July-03 November-03 March-04 May-04 -9.OOE-01 1.97E+00 -2.02E-02 1.53E-02 -3.90E-04 3.29E-04 -4.70E-04 3.13E-04 May-04 4.1 OE+00 2.96E+00 -1.OOE-02 1.97E-02 -1.OOE-04 1.65E-04 -8.20E-05 1.35E-04 August-04 November-04 July-03 November-03 March-04 May-04 August-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
(
TA. _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts August-03 November-03 No Sample Collected March-04 May-04 No Sample Collected August-04 November-04 No Sample Collected August-03 -2.00E+00 6.00E+00 O.OOE+00 6.70E+00 -7.00E-01 4.90E+00 7.00E-01 4.60E+00 2.10E+00 1.50E+01 November-03 -3.OOE-01 2.80E+00 2.OOE-01 2.14E+00 2.00E-01 1.81E+00 O.OOE+00 1.60E+00 2.80E+00 6.09E+00 March-04 No Sample Collected May-04 6.00E-01 2.47E+00 1.80E+00 2.47E+00 -6.00E-01 2.30E+00 -2.10E+00 2.15E+00 -1.10E+00 6.09E+00 August-04 Well Abandoned in July 2004 August-03 4.00E-01 8.00E+00 8.00E-01 7.80E+00 -9.OOE-01 6.70E+00 -5.00E-01 5.50E+00 8.00E-01 1.80E+01 November-03 9.OOE-01 2.80E+00 4.70E+00 3.29E+00 -6.00E-01 1.65E+00 -1.20E+00 1.97E+00 -3.30E+00 6.42E+00 March-04 -6.00E-01 2.14E+00 9.00E-02 1.35E+00 4.50E-01 1.43E+00 4.00E-01 2.30E+00 1.40E+00 6.42E+00 May-04 -1.70E+00 3.45E+00 -1.80E+00 3.29E+00 1.20E+00 3.45E+00 3.60E+00 2.47E+00 O.OOE+00 8.06E+00 May-04 1.57E+00 1.53E+00 3.00E-01 1.33E+00 7.00E-01 4.11 E+00 August-04 Well Abandoned in July 2004 August-03 8.OOE-01 3.60E+00 -8.00E-01 4.80E+00 7.00E-01 3.60E+00 1.61 E+00 3.1 OE+00 3.00E+00 1.10E+01 November-03 7.OOE-01 2.30E+00 2.50E+00 2.30E+00 -1.70E+00 2.80E+00 -1.80E+00 2.47E+00 -2.1 OE+00 7.90E+00 March-04 5.00E-01 2.47E+00 -1.OOE+00 3.29E+00 -9.OOE-01 2.63E+00 -2.00E+00 3.62E+00 -3.60E+00 6.58E+00 May-04 8.00E-01 2.47E+00 1.20E+00 2.80E+00 2.00E+00 2.96E+00 -1.20E+00 1.97E+00 1.90E+00 7.40E+00 August-04 -1.30E+00 1.97E+00 -1.10E+00 2.63E+00 -4.00E-01 2.14E+00 -2.00E-01 1.65E+00 -5.00E-01 5.26E+00 November-04 No Sample Collected The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
TA _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts
.D0a WWI Cs-134 Lc l Cs137 Lc l Eu-152 Lc l Eu-154 Lc l Eu-155 Lc August-03 November-03 March-04 May-04 August-04 November-04 August-03 2.OOE-01 8.60E+00 -6.00E-01 6.60E+00 3.50E+00 1.40E+01 2.10E+00 1.70E+01 -3.70E+00 2.30E+01 November-03 2.OOE-01 2.47E+00 -3.80E+00 2.63E+00 -5.10E+00 5.43E+00 3.40E+00 6.74E+00 -3.00E-01 6.58E+00 March-04 May-04 1.OOE-01 2.15E+00 1.80E+00 2.15E+00 1.OOE-01 5.43E+00 9.10E+00 8.06E+00 8.OOE-01 7.40E+00 August-04 August-03 2.90E+00 5.70E+00 -9.OOE-01 6.90E+00 -1.90E+00 1.60E+01 -9.OOE-01 2.10E+01 5.30E+00 2.40E+01 November-03 1.00E+00 2.14E+00 -1.40E+00 2.30E+00 1.10E+00 5.76E+00 -8.OOE+00 8.39E+00 1.60E+00 7.73E+00 March-04 -2.20E+00 2.63E+00 -1.00E-01 2.30E+00 -2.90E+00 6.42E+00 -3.10E+00 5.92E+00 2.10E+00 9.05E+00 May-04 3.70E+00 3.46E+00 -4.90E+00 3.13E+00 3.60E+00 6.74E+00 5.50E+00 9.05E+00 2.70E+00 8.55E+00 May-04 -1.70E+00 3.29E+00 -7.OOE-01 3.13E+00 9.00E-01 4.61E+00 August-04 August-03 3.00E-01 5.60E+00 4.00E-01 3.70E+00 -5.OOE-01 1.10E+01 1.40E+00 1.20E+01 -2.80E+00 1.70E+01 November-03 2.40E+00 2.96E+00 1.10E+00 3.13E+00 4.OOE-01 6.25E+00 -2.60E+00 8.88E+00 2.60E+00 8.72E+00 March-04 -2.50E+00 2.63E+00 3.00E-01 3.13E+00 -9.OOE-01 6.58E+00 3.00E+00 7.07E+00 2.40E+00 1.05E+01 May-04 -2.10E+00 2.80E+00 -2.50E+00 3.13E+00 -4.20E+00 6.58E+00 9.OOE-01 9.71E+00 5.90E+00 9.54E+00 August-04 -2.70E+00 2.14E+00 2.00E-01 2.30E+00 -3.60E+00 5.10E+00 -2.50E+00 8.23E+00 2.40E+00 7.24E+00 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( (
TAL.E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts August-03 -6.30E-01 1.52E+02 4.20E+00 2.01E+00 1.16E+01 1.29E+00 November-03 March-04 2.70E+01 1.58E+02 5.90E+00 2.63E+00 1.45E+01 1.97E+00 May-04 August-04 1.30E+02 1.65E+02 8.00E-01 1.65E+00 1.10E+01 2.14E+00 November-04 August-03 3.67E+03 3.60E+02 1.70E+00 2.40E+00 8.60E+00 2.20E+00 -9.OOE+00 2.80E+01 4.20E+00 6.20E+00 November-03 1.85E+03 1.81 E+02 -4.40E+00 1.28E+00 1.02E+01 1.63E+00 -4.40E+01 3.13E+01 4.00E-01 6.25E+00 March-04 May-04 5.20E+03 2.80E+02 2.50E+00 2.15E+00 8.40E+00 2.47E+00 -3.70E+01 6.91E+01 -1.43E+01 7.57E+00 August-04 August-03 1.90E+02 3.60E+02 3.30E+00 3.20E+00 3.39E+01 2.40E+00 4.00E+00 3.60E+01 -2.1 OE+00 7.00E+00 November-03 5.80E+02 1.65E+02 -1.OOE-01 2.30E+00 2.21E+01 1.30E+00 -1.60E+01 3.13E+01 8.1OE+00 6.09E+00 March-04 -5.30E+01 1.55E+02 -9.OOE-02 1.23E+00 3.40E+00 1.812E+00 3.OOE+00 2.30E+01 -5.20E+00 6.09E+00 May-04 -6.00E+01 1.97E+02 -6.OOE-02 1.09E+00 4.16E+00 1.46E+00 -1.60E+01 5.26E+01 3.OOE-01 3.78E+00 May-04 August-04 August-03 1.25E+03 3.60E+02 1.57E+00 1.92E+00 8.30E+00 2.20E+00 -2.20E+01 3.40E+01 8.60E+00 9.40E+00 November-03 1.78E+03 1.82E+02 -9.50E-01 1.23E+00 1.11E+01 1.97E+00 5.00E+00 4.44E+01 1.OOE-01 4.44E+00 March-04 1.25E+03 1.81 E+02 7.00E-01 1.65E+00 3.39E+01 2.47E+00 1.80E+01 2.63E+01 -6.00E+00 2.30E+01 May-04 1.87E+03 2.30E+02 3.50E-01 1.45E+00 1.85E+01 1.65E+00 -8.OOE+00 3.29E+01 -8.30E+00 6.58E+00 August-04 1.48E+03 1.81 E+02 1.60E+00 1.51 E+00 1.47E+01 2.47E+00 -2.00E+01 2.80E+01 2.70E+00 4.94E+00 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
TA/ _E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Od inpl,_,, I Ni-63 Lc I Sr-90 Lc I Tc-99 Lc II Pu-238 Lc
` I"""
IPu-239/240 3'
I'_, -111"i"'I Lc
`_
a August-03 November-03 March-04 May-04 August-04 November-04 August-03 2.30E+00 4.20E+00 1.OOE-01 2.20E+00 5.40E-02 1.20E-01 1.19E-01 1.68E-01 November-03 -2.OOE+00 4.44E+00 1.60E+00 1.97E+00 -3.OOE+00 4.94E+00 -6.40E-03 1.05E-02 1.03E-01 1.23E-01 March-04 May-04 2.10E+00 5.10E+00 1.10E+00 2.15E+00 O.OOE+00 4.44E+00 -1.51 E-03 1.02E-03 1.80E-02 1.81 E-02 August-04 August-03 -9.OOE-01 4.20E+00 3.40E+00 2.80E+00 O.OOE+00 2.OOE-03 6.40E-02 1.28E-01 November-03 -4.OOE-01 4.61 E+00 -1.90E+00 2.14E+00 1.90E+00 5.26E+00 O.OOE+00 1.1 OE-03 1.60E-01 1.37E-01 March-04 2.90E+00 4.11 E+00 -3.OOE-01 2.14E+00 -3.70E+00 5.43E+00 2.OOE-02 2.47E-02 O.OOE+00 2.80E-04 May-04 2.20E+00 4.61 E+00 1.1OE+00 1.97E+00 -5.OOE-01 5.26E+00 -5.70E-04 9.38E-04 8.90E-03 1.56E-02 May-04 1.22E-01 9.21 E-02 August-04 August-03 -1.90E+00 4.40E+00 1.40E+00 2.60E+00 -1.70E-02 1.98E-02 4.60E-02 1.16E-01 November-03 1.60E+00 6.91 E+00 2.OOE-01 2.14E+00 -8.OOE+00 4.77E+00 -5.50E-03 9.05E-03 4.30E-02 9.05E-02 March-04 8.IOE+00 4.77E+00 9.OOE-01 1.97E+00 -8.30E+00 5.43E+00 -4.80E-04 7.90E-04 O.OOE+0O 2.63E-04 May-04 -1.20E+00 5.76E+00 1.1OE+00 2.14E+00 -2.70E+00 6.25E+00 1.OOE-02 1.65E-02 5.60E-03 1.20E-02 August-04 -2.30E+00 5.26E+00 -6.OOE-01 1.81 E+00 -1.OOE+00 6.58E+00 9.OOE-03 1.81 E-02 O.OOE+00 2.80E-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( T/ _E 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts
-CWI1O.;>';r.
August-03 November-03 March-04 May-04 August-04 November-04 August-03 1.20E+00 2.40E+00 2.00E-01 1.81E-01 O.OOE+00 4.44E-04 O.OOE+00 4.11E-04 November-03 4.00E-01 1.33E+00 -6.60E-02 1.12E-01 3.20E-02 3.62E-02 7.00E-03 2.14E-02 Ce-141(8.59 pCiL), Ra-226 March-04 (199 pCi/L) and Ag-1I0m (5.18 pCUL)
May-04 2.20E+00 2.30E+00 -1.69E-02 1.10E-02 2.90E-03 4.77E-03 O.OOE+00 7.40E-05 August-04 August-03 3.10E+00 3.00E+00 1.60E-01 1.97E-01 O.OOE+00 4.61 E-04 O.OOE+00 4.10E-04 7/2003 sample for Bi-214 November-03 7.80E+00 6.09E+00 -2.31 E-01 1.23E-01 1.20E-02 3.45E-02 O.OOE+00 3.95E-04 was 33.6 and for PB-214 was March-04 3.00E-01 3.62E+00 -1.80E-02 1.97E-02 -6.00E-04 9.87E-04 O.OOE+00 2.30E-04 26.1 pCi/L May-04 -2.60E+00 3.45E+00 3.10E-02 1.97E-02 O.OOE+00 1.65E-04 O.OOE+O0 1.41 E-04 May-04 O.OOE+00 2.47E-04 8.10E-04 1.33E-02 August-04 August-03 1.60E+00 2.60E+00 -2.OOE-02 1.65E-01 -6.50E-03 1.07E-02 -5.80E-03 9.54E-03 November-03 9.20E-01 1.63E+00 -3.30E-02 1.32E-01 2.20E-02 3.62E-02 1.90E-02 3.13E-02 Ra-226(114); Zr-95(6.29)
March-04 4..10E+00 3.29E+00 -8.OOE-03 2.63E-02 -6.40E-04 1.05E-03 O.OOE+00 2.30E-04 May-04 7.00E-01 3.45E+00 -8.00E-03 1.97E-02 O.OOE+00 1.43E-04 O.OOE+00 1.30E-04 August-04 -3.70E+00 2.96E+00 -2.55E-01 1.25E-01 O.OOE+00 .00042*1.61 -3.20E-02 2.63E-02 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TXI .E 9 C Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts I
1 1
I i "I.I.I.
.; ', ..P.
1-11'. ;
sl . 11-"I t, *'
.,-,11Z1,11Yi -,
_W_
't, I
'i q
I Mn-54 Lc I Co-60 Lc I Nb-94 Lc_ _ Ag-108m Lc I Sb-125 LC I J
August-03 5.00E-01 7.00E+00 1.70E+00 7.50E+00 7.00E-01 8.40E+00 -2.40E+00 6.20E+00 -9.OOE-01 1.70E+01 November-03 -7.OOE-01 1.81E+00 -1.50E+00 1.65E+00 4.00E-01 1.97E+00 2.00E-01 2.14E+00 -2.80E+00 5.76E+00 March-04 1.50E+00 2.47E+00 4.OOE-01 2.15E+00 -2.60E+00 2.47E+00 -1.50E+00 2.15E+00 -3.00E+00 6.42E+00 May-04 -8.00E-01 2.30E+00 2.80E+00 3.45E+00 -5.00E-01 2.15E+00 1.30E+00 2.15E+00 5.80E+00 6.42E+00 August-04 -1.30E+00 2.80E+00 -1.70E+00 3.622+00 2.80E+00 2.47E+00 -1.20E+00 2.47E+00 -2.30E+00 8.06E+00 November-04 3.00E-01 2.30E+00 -7.00E-01 2.30E+00 5.00E-01 1.97E+00 2.1 OE+00 2.30E+00 1.40E+00 6.91 E+00 M -6 :
August-03 3.OOE-01 5.70E+00 -4.00E+00 9.00E+00 -2.00E-01 4.70E+00 2.00E-01 3.70E+00 4.30E+00 1.20E+01 November-03 -1.1 OE+00 2.30E+00 -1.10E+00 2.14E+00 1.80E+00 2.14E+00 5.00E-01 2.14E+00 7.70E+00 6.74E+00 March-04 6.00E-01 2.47E+00 1.20E+00 2.14E+00 -2.00E+00 2.14E+00 9.00E-01 2.14E+00 2.40E+00 5.92E+00 May-04 No Sample Collected August-04 No Sample Collected November-04 No Sample Collected MW-I10077:
August-03 -4.00E-01 2.40E+00 2.OOE-01 2.00E+00 -1.OOE-01 2.60E+00 5.00E-01 2.00E+00 -1.50E+00 6.80E+00 November-03 No Sample Collected March-04 No Sample Collected May-04 6.00E-01 1.97E+00 -2.00E-01 1.97E+00 -5.00E-01 1.81 E+00 -6.00E-01 2.15E+00 8.20E+00 5.92E+00 August-04 4.40E+00 2.80E+00 3.40E+00 2.96E+00 2.80E+00 2.47E+00 -9.OOE-01 2.30E+00 8.50E+00 7.90E+00 November-04 -1.00E+00 2.30E+00 -2.00E-01 3.78E+00 1.20E+00 2.80E+00 4.00E-01 2.80E+00 -7.90E+00 7.40E+00 August-03 -6.00E-01 2.40E+00 O.OOE+00 3.00E+00 5.00E-01 2.20E+00 -6.40E-01 1.88E+00 O.OOE+00 6.20E+00 November-03 No Sample Collected March-04 No Sample Collected May-04 -2.20E+00 2.15E+00 -5.00E-01 2.15E+00 -7.00E-01 1.81 E+00 5.00E-01 1.97E+00 -7.1 OE+00 5.43E+00 August-04 -1.20E+00 2.14E+00 3.00E-01 1.97E+00 1.OOE-01 1.81E+00 -1.OOE-01 1.65E+00 -2.50E+00 5.92E+00 August-04 8.00E-01 2.63E+00 2.70E+00 3.62E+00 3.00E-01 2.30E+00 1.40E+00 2.14E+00 4.80E+00 7.07E+00 November-04 6.00E-01 3.29E+00 4.20E+00 4.44E+00 1.OOE+00 2.80E+00 2.50E+00 3.45E+00 6.10E+00 1.02E+01 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TL0_E9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta
(
and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts
________I August-03 9.00E-01 4.30E+00 -2.00E+00 8.10E+00 -3.10E+00 1.70E+01 2.60E+00 2.30E+01 -7.60E+00 2.40E+01 November-03 -1.20E+00 2.30E+00 -2.60E+00 2.14E+00 -4.20E+00 5.26E+00 -1.00E-01 6.09E+00 -9.OOE+00 8.06E+00 March-04 1.00E+00 2.96E+00 1.70E+00 2.80E+00 O.OOE+00 5.59E+00 -5.80E+00 8.72E+00 2.10E+00 8.72E+00 May-04 -9.OOE-01 3.39E+00 6.00E-01 2.47E+00 5.00E+00 6.25E+00 O.OOE+00 6.25E+00 -4.1OE+00 7.57E+00 August-04 -1.80E+00 3.95E+00 O.OOE+00 2.30E+00 3.80E+00 6.42E+00 O.OOE+00 7.24E+00 2.00E+00 8.06E+00 November-04 -1.50E+00 2.30E+00 8.00E-01 2.30E+00 8.00E-01 6.25E+00 3.00E+00 6.74E+00 2.50E+00 1.04E+01 August-03 -1.08E+00 3.90E+00 -1.002+00 4.90E+00 7.00E-01 1.10E+01 -1.10E+00 1.80E+01 -3.1 OE+00 1.50E+01 November-03 1.60E+00 2.30E+00 -5.00E-01 2.14E+00 -4.00E-01 5.43E+00 1.OOE+01 7.57E+00 -4.60E+00 7.57E+00 March-04 6.00E-01 2.14E+00 -8.00E-01 2.47E+00 -2.50E+00 6.25E+00 -3.20E+00 6.74E+00 -1.60E+00 9.38E+00 May-04 August-04 November-04 August-03 2.40E+00 2.40E+00 -1.00E+00 2.20E+00 2.00E-01 5.00E+00 -3.20E+00 9.00E+00 2.40E+00 7.20E+00 November-03 March-04 May-04 -9.OOE-01 2.47E+00 -8.00E-01 2.30E+00 1.70E+00 5.59E+00 3.00E-01 4.28E+00 -1.80E+00 9.05E+00 August-04 -1.70E+00 2.96E+00 -2.60E+00 2.14E+00 1.20E+00 6.25E+00 -3.30E+00 5.43E+00 -3.1OE+00 7.73E+00 November-04 -6.00E-01 2.96E+00 -3.30E+00 2.96E+00 7.40E+00 6.91E+00 -3.90E+00 9.05E+00 1.25E+01 1.OOE+01 August-03 1.00E-01 2.40E+00 O.OOE+00 2.80E+00 3.10E+00 6.20E+00 -9.10E+00 7.60E+00 -4.60E+00 4.40E+00 November-03 March-04 May-04 6.00E-01 2.63E+00 -1.60E+00 1.81 E+00 3.90E+00 5.43E+00 -3.90E+00 5.59E+00 -2.00E-01 8.55E+00 August-04 1.10E+00 2.14E+00 -7.00E-01 1.97E+00 -5.40E+00 5.43E+00 2.60E+00 4.44E+00 -7.40E+00 8.23E+00 August-04 2.80E+00 3.13E+00 -1.OOE+00 2.47E+00 -5.80E+00 5.92E+00 -7.60E+00 7.40E+00 3.00E+00 7.57E+00 November-04 -1.80E+00 3.78E+00 -1.90E+00 3.62E+00 -3.60E+00 9.54E+00 O.OOE+00 1.04E+01 4.30E+00 1.09E+01 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TLA.E99 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Well nd Dat - W'1 -- j I Tritium Lc IGross Aloha Lc I Gross Beta Lc I C-14 Lc I Fe-55 Lc I I
August-03 3.81E+03 3.60E+02 2.00E-01 1.84E+00 9.00E+00 2.20E+00 -3.40E+01 3.40E+01 3.1 OE+00 5.40E+00 November-03 2.99E+03 3.13E+02 2.30E-01 1.30E+00 7.50E+00 1.81 E+00 O.OOE+00 2.63E+01 1.OOE-01 4.61 E+00 March-04 4.49E+03 1.97E+02 -1.05E+00 1.25E+00 1.05E+01 1.30E+00 3.40E+01 2.96E+01 6.00E-01 3.62E+00 May-04 3.42E+03 2.47E+02 -1.70E-01 1.30E+00 8.40E+00 2.47E+00 3.00E+00 3.78E+01 -1.35E+01 6.58E+00 August-04 3.05E+03 2.14E+02 1.76E+00 1.20E+00 1.16E+01 1.48E+00 1.50E+01 4.61 E+01 -5.40E+00 4.61 E+00 November-04 3.44E+03 2.14E+02 4.50E-01 1.30E+00 1.07E+01 1.97E+00 -2.60E+01 4.61 E+01 -1.20E+00 4.94E+00
,M,6-..-'.'
August-03 O.OOE+00 3.50E+02 5.64E+00 1.40E+00 1.05E+01 7.60E-01 -4.40E+01 3.20E+01 2.30E+00 6.00E+00 November-03 2.14E+02 1.61 E+02 3.42E+00 1.51 E+00 8.90E+00 1.81 E+00 -1.20E+01 3.45E+01 -9.OOE-01 4.77E+00 March-04 -2.80E+01 1.58E+02 4.80E+00 3.29E+00 1.30E+01 2.63E+00 -2.00E+00 2.47E+01 -5.40E+00 6.42E+00 May-04 August-04 November-04 August-03 '2.05E+02 2.09E+02 ' 3.70E+00 3.60E+00 1.02E+01 2.50E+00 -5.90E+01 9.50E+01 1.OOE+00 4.00E+01 November-03 March-04 May-04 O.OOE+00 1.97E+02 1.38E+00 1.23E+00 4.55E+00 1.56E+00 2.80E+01 3.13E+01 -4.1 OE+00 4.28E+O0 August-04 1.30E+02 1.65E+02 -1.OOE-01 7.90E-01 6.70E+00 1.97E+00 -1.40E+01 3.29E+01 5.30E+00 4.77E+00 November-04 1.60E+02 1.65E+02 1.96E+00 1.28E+00 4.50E+00 1.81E+00 -8.00E+00 3.13E+01 1.20E+00 4.77E+00 August-03 2.50E+02 2.14E+02 3.30E+00 2.90E+00 1.31E+01 1.60E+00 -5.40E+01 8.60E+01 8.00E-01 3.30E+01 November-03 March-04 May-04 -2.30E+02 1.97E+02 1.81 E+00 1.46E+00 2.30E+00 1.65E+00 4.00E+00 3.45E+01 -3.90E+00 4.11 E+00 August-04 1.40E+02 1.81 E+02 1.22E+00 1.33E+00 6.60E+00 1.97E+00 2.50E+01 3.78E+01 6.00E-01 4.44E+00 August-04 3.00E+01 1.81E+02 2.90E-01 1.00E+00 5.40E+00 1.81 E+00 -2.80E+01 2.80E+01 -8.OOE-01 4.61 E+00 November-04 3.OOE+02 1.81 E+02 1.47E+00 1.45E+00 7.10E+00 1.97E+00 1.70E+01 3.13E+01 -2.50E+00 4.61 E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TQE 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Lc Pu-239/240 Lc MW-r August-03 -3.OOE-01 4.20E+00 9.OOE-01 2.80E+00 O.OOE+00 2.20E-02 1.20E-01 1.90E-01 November-03 -2.00E-01 5.59E+00 -1.70E+00 1.81E+00 -1.40E+00 3.45E+00 -1.80E-02 2.14E-02 2.20E-02 1.14E-01 March-04 3.OOE+00 4.94E+00 O.OOE+00 2.30E+00 2.OOE-01 6.58E+00 6.40E-02 1.61 E-01 -9.1 OE-03 1.05E-02 May-04 1.40E+00 5.59E+00 1.70E+00 2.15E+00 1.40E+00 5.59E+00 5.80E-03 1.05E-02 -2.60E-03 2.63E-03 August-04 2.80E+00 5.76E+00 -2.70E+00 1.81 E+00 4.80E+00 5.43E+00 -2.80E-03 2.63E-03 1.50E-02 2.96E-02 November-04 1.05E+01 6.25E+00 -2.OOE+00 1.97E+00 3.60E+00 5.76E+00 4.90E-03 9.54E-03 4.OOE-03 9.54E-03 August-03 -1.50E+00 4.OOE+00 1.20E+00 2.40E+00 1.14E-01 1.60E-01 4.50E-02 1.14E-01 November-03 -3.80E+00 5.26E+00 5.OOE-01 1.97E+00 1.10E+00 5.43E+00 -8.50E-02 3.78E-02 5.40E-02 1.OOE-01 March-04 6.1 OE+00 6.58E+00 5.OOE-01 1.97E+00 -1.90E+00 5.43E+00 -9.60E-04 1.12E-03 -2.40E-03 1.81 E-03 May-04 August-04 November-04 August-03 -2.10E+00 9.1OE+00 -1.10E+00 4.20E+00 -5.OOE-02 3.60E-01 -3.40E-02 3.30E-01 November-03 March-04 May-04 8.20E+00 4.94E+00 O.OOE+00 1.81 E+00 3.OOE-01 4.94E+00 3.60E-03 6.74E-03 1.18E-02 1.17E-02 August-04 4.60E+00 5.76E+00 1.30E+00 1.81 E+00 -2.30E+00 4.11 E+00 -4.50E-04 7.40E-04 -9.1 OE-04 1.05E-03 November-04 -4.OOE-01 5.26E+00 -1.40E+00 1.81 E+00 -1.1 OE+00 4.28E+00 -3.20E-03 5.26E-03 6.OOE-02 1.27E-01 IlMW__100EUFi-August-03 -3.OOE-01 8.80E+00 -1.OOE+00 4.10E+00 -2.90E-02 4.20E-01 2.40E-01 1.97E-01 November-03 March-04 May-04 6.80E+00 4.77E+00 -1.OOE+00 1.81 E+00 1.50E+00 4.94E+00 -1.05E-03 1.22E-03 O.OOE+00 1.17E-04 August-04 -8.OOE-01 5.59E+00 -2.OOE-01 1.65E+00 -3.40E+00 5.76E+00 9.20E-03 1.51 E-02 -4.14E-04 6.74E-04 August-04 3.50E+00 5.59E+00 6.OOE-01 1.81 E+00 -1.80E+00 5.92E+00 O.OOE+00 2.80E-04 -4.IOE-04 6.74E-04 November-04 -2.70E+00 5.59E+00 -1.90E+00 1.81 E+00 *2.OOE+00 4.44E+00 -3.20E-03 5.26E-03 -3.20E-03 5.26E-03 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
( TUE 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts August-03 2.10E+00 2.60E+00 9.OOE-02 2.40E-01 2.OOE-02 4.OOE-02 1.20E-02 3.80E-02 November-03 -7.20E-01 1.40E+00 1.OOE-03 1.51E-01 1.20E-02 4.28E-02 -2.OOE-02 2.30E-02 March-04 2.20E+00 1.81E+00 -1.43E-01 9.38E-02 9.OOE-03 2.80E-02 O.OOE+00 3.78E-04 May-04 -1.30E+00 2.47E+00 -1.82E-02 2.47E-02 O.OOE+00 2.14E-04 -5.80E-04 9.54E-04 August-04 -2.90E+00 2.47E+00 -1.50E-02 1.81 E-02 O.OOE+00 1.50E-04 O.OOE+00 1.32E-04 November-04 1.OOE+00 2.30E+00 -4.50E-03 1.20E-02 -4.40E-03 3.62E-03 -8.20E-04 1.35E-03 August-03 3.20E+00 3.60E+00 1.40E-01 1.81E-01 1.60E-02 2.63E-02 -5.10E-03 8.39E-03 November-03 6.20E-01 1.58E+00 -4.1 OE-02 1.40E-01 2.50E-02 6.58E-02 -1.80E-02 5.43E-02 Bi-214(13.6) Ra-226(54.7)
March-04 6.OOE-01 3.45E+00 -1.80E-02 I1.97E-02 -1.18E-03 1.37E-03 -4.80E-04 7.90E-04 May-04 August-04 November-04 August-03 1.50E-01 2.70E+00 -2.30E-02 3.70E-01 1.30E-02 1.OOE-01 -2.OOE-02 1.20E-01 November-03 March-04 May-04 -2.40E+00 2.30E+00 -2.50E-02 2.47E-02 1.11 E-02 1.38E-02 0.OOE+00 1.35E-04 August-04 -1.OOE-01 1.97E+00 -2.30E-01 1.20E-02 2.30E-02 3.78E-02 0.OOE+00 4.61 E-04 November-04 -3.90E+00 5.43E+00 -1.12E-01 7.73E-02 -5.30E-03 6.25E-03 -4.70E-03 5.43E-03 August-03 -1.70E+00 5.80E+00 -4.70E-02 3.70E-01 -1.34E-02 1.10E-01 O.OOE+00 4.20E-02 November-03 March-04 May-04 1.OOE-01 2.47E+00 -3.70E-02 1.97E-02 -5.90E-04 9.71 E-04 -1.04E-03 1.22E-03 August-04 -9.OOE-01 1.65E+00 -1.88E-01 1.23E-01 1.30E-02 3.78E-02 -6.40E-03 1.05E-02 August-04 -3.OOE-01 1.81 E+00 -1.96E-01 1.28E-01 1.30E-02 3.78E-02 O.OOE+00 4.44E+00 November-04 -3.50E+00 5.76E+00 2.40E-02 1.15E-01 2.10E-02 3.45E-02 1.70E-02 2.80E-02 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( Tf _E9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Mn5 c Co-60 Lc94 L Ag-108m Lc Sb15 =
September-03 -1.28E+00 1.98E+00 -1.12E+00 1.82E+00 1.22E+00 1.72E+00 9.50E-01 1.72E+00 4.10E+00 5.20E+00 November-03 -7.OOE-01 3.13E+00 -8.00E-01 2.63E+00 1.30E+00 2.47E+00 O.OOE+00 2.30E+00 -9.60E+00 7.07E+00 March-04 1.40E+00 3.45E+00 3.OOE+00 3.62E+00 -3.00E+00 2.63E+00 1.50E+00 2.47E+00 1.80E+00 7.40E+00 May-04 2.60E-01 1.05E+00 2.37E+00 9.05E-01 1.40E-01 1.07E+00 -1.70E-01 9.38E-01 -6.OOE-01 2.96E+00 August-04 1.00E-01 1.07E+00 2.10E-01 1.09E+00 -1.30E-01 8.72E-01 8.10E-01 9.87E-01 4.30E+00 2.96E+00 November-04 -9.OOE-01 2.14E+00 -8.OOE-01 2.63E+00 1.40E+00 1.97E+00 2.1OE+00 2.30E+00 -1.90E+00 6.58E+00 M 0, August-03 3.1 OE+OO 2.60E+00 -8.00E-01 3.20E+00 -1.50E+00 2.60E+00 -2.20E+00 2.20E+00 -5.40E+00 3.20E+00 November-03 4.00E-01 1.65E+00 O.OOE+00 2.14E+00 -7.20E-01 1.40E+00 7.30E-01 1.56E+00 6.30E+00 5.59E+00 March-04 -2.20E+00 2.80E+00 -3.40E+00 3.45E+00 1.00E-01 2.80E+00 -2.00E+00 2.47E+00 -6.30E+00 8.06E+00 May-04 1.70E+00 4.11E+00 -1.60E+00 2.47E+00 5.60E+00 3.62E+00 9.00E-01 3.13E+00 7.40E+00 9.87E+00 August-04 3.00E-01 2.63E+00 6.OOE-01 2.14E+00 1.OOE+00 2.14E+00 -1.102+00 1.97E+00 2.80E+00 5.92E+00 November-04 7.002-01 2.80E+00 -1.50E+00 3.29E+00 O.OOE+00 2.80E+00 -7.OOE-01 2.14E+00 1.40E+00 8.55E+00 September-03 -4.OOE-01 2.60E+00 1.00E-01 2.80E+00 1.70E+00 2.20E+00 -2.30E+00 2.60E+00 -3.50E+00 7.40E+00 November-03 -1.60E+00 2.47E+00 -9.OOE-01 3.13E+00 -1.40E+00 2.96E+00 -2.OOE-01 1.97E+00 8.50E+00 7.57E+00 March-04 -1.50E+00 2.96E+00 8.00E-01 2.80E+00 O.OOE+00 2.80E+00 1.50E+00 2.47E+00 -1.50E+00 7.07E+00 May-04 O.OOE+00 1.65E+00 2.30E+00 2.47E+00 -1.IOE+00 1.97E+00 9.00E-01 1.97E+00 3.70E+00 5.76E+00 August-04 --6.00E-01 2.63E+00 -1.30E+00 2.63E+00 4.OOE-01 2.30E+00 1.00E+00 2.30E+00 7.00E+00 8.72E+00 November-04 -1.20E+00 .2.80E+00 -1.90E+00 2.96E+00 -9.OOE-01 2.47E+00 -1.40E+00 2.47E+00 O.OOE+00 7.07E+00 M '1-.
O2Bn>,i,',Zv.
September-03 -2.00E-01 2.40E+00 -9.OOE-01 2.40E+00 1.10E+00 2.40E+00 -1.13E+00 1.78E+00 -3.50E+00 5.60E+00 November-03 2.50E+00 1.81E+00 1.30E+00 1.97E+00 -3.00E-01 1.65E+00 -2.00E-01 1.65E+00 1.50E+00 4.77E+00 March-04 -1.90E+00 2.47E+00 -2.10E+00 2.14E+00 O.OOE+00 1.98E+00 -6.00E-01 1.81E+00 -5.10E+00 5.76E+00 May-04 -1.60E+00 2.96E+00 -8.00E-01 2.63E+00 3.00E-01 2.30E+00 -3.00E-01 2.30E+00 3.90E+00 7.73E+00 August-04 2.OOE-01 2.63E+00 -2.90E+00 2.47E+00 -4.00E-01 2.30E+00 1.OOE+00 2.30E+00 -5.00E-01 7.24E+00 November-04 O.OOE+00 1.97E+00 4.00E-01 2.14E+00 1.00E-01 1.97E+00 2.70E+00 2.14E+00 0.002+00 5.92E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TILl E9 C Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts
.77 b;:11E'i Lc September-03 -8.00E-01 2.20E+00 -3.00E-01 2.00E+00 -2.60E+00 5.20E+00 4.60E+00 4.39E+00 4.00E+00 7.80E+00 November-03 2.20E+00 3.45E+00 -1.30E+00 2.80E+00 5.60E+00 5.26E+00 -4.1 OE+00 8.88E+00 -5.IOE+00 7.24E+00 March-04 1.70E+00 2.47E+00 9.00E-01 2.96E+00 -7.00E-01 6.91 E+00 -9.OOE-01 8.72E+00 -1.40E+00 1.02E+01 May-04 2.50E-01 1.1OE+00 5.88E+00 1.37E+00 2.60E+00 2.30E+00 3.60E+00 3.13E+00 -4.00E-01 3.45E+00 August-04 1.10E-01 1.17E+00 -2.22E+00 1.07E+00 4.00E-01 2.96E+00 -1.50E+00 2.96E+00 3.00E-01 4.61 E+00 November-04 I.00E+00 2.30E+00 -9.OOE-01 2.30E+00 3.90E+00 6.58E+00 3.20E+00 4.28E+00 -3.20E+00 9.38E+00 August-03 6.00E-01 3.00E+00 8.OOE-01 3.00E+00 6.90E+00 6.20E+00 -5.00E-01 6.00E+00 5.30E+00 8.40E+00 November-03 O.OOE+00 1.81 E+00 -2.1 OE+00 1.81 E+00 -1.80E+00 5.26E+00 -8.70E+00 5.26E+00 2.90E+00 7.57E+00 March-04 -1.10E+00 3.29E+00 -4.00E-01 2.30E+00 -2.10E+00 5.59E+00 -2.70E+00 9.05E+00 -1.09E+01 7.90E+00 May-04 6.50E+00 4.11E+00 -8.00E-01 3.78E+00 -5.00E+00 7.24E+00 ,1.04E+01 1.09E+01 -1.40E+00 1.02E+01 August-04 -1.40E+00 2.63E+00 -5.00E-01 2.14E+00 -4.50E+00 5.92E+00 1.30E+00 6.91 E+00 2.50E+00 8.39E+00 November-04 -1.OOE-01 2.80E+00 -3.00E-01 2.14E+00 6.00E-01 5.43E+00 2.1 OE+00 7.90E+00 3.00E-01 7.40E+00 MW- 102 t;A -
September-03 7.OOE-01 3.00E+00 -2.40E+00 2.40E+00 -3.70E+00 4.80E+00 1.20E+00 7.80E+00 -1.60E+00 6.80E+00 November-03 9.00E-01 2.96E+00 -1.50E+00 3.29E+00 2.00E-01 5.92E+00 6.40E+00 8.72E+00 -5.70E+00 8.88E+00 March-04 2.00E+00 2.80E+00 -2.80E+00 2.80E+00 -9.OOE-01 6.58E+00 4.80E+00 9.05E+00 1.25E+01 9.87E+00 May-04 -1.40E+00 2.47E+00 1.40E+00 2.14E+00 6.20E+00 5.92E+00 -2.60E+00 5.92E+00 4.50E+00 8.39E+00 August-04 -2.70E+00 2.80E+00 -1.80E+00 2.63E+00 -1.10E+00 7.07E+00 1.30E+00 8.23E+00 -1.1OE+01 1.07E+01 November-04 1.30E+00 2.80E+00 2.80E+00 2.63E+00 2.OOE-01 6.09E+00 -4.20E+00 9.38E+00 4.50E+00 8.88E+00 September-03 1.30E+00 2.40E+00 1.20E+00 2.40E+00 O.OOE+00 5.40E+00 O.OOE+00 6.40E+00 -1.80E+00 8.40E+00 November-03 1.30E+00 1.97E+00 -4.OOE-01 1.81 E+00 -3.30E+00 4.94E+00 3.50E+00 4.77E+00 4.50E+00 7.57E+00 March-04 -3.60E+00 2.47E+00 1.70E+00 2.14E+00 O.OOE+00 6.58E+00 6.1 OE+00 7.73E+00 -7.60E+00 9.54E+00 May-04 1.10E+00 2.15E+00 -1.00E-01 2.80E+00 -2.20E+00 7.07E+00 4.00E-01 9.38E+00 -5.702+00 9.71 E+00 August-04 .-7.00E-01 2.80E+00 1.30E+00 2.63E+00 6.60E+00 7.07E+00 -2.20E+00 8.06E+00 1.10E+00 8.06E+00 November-04 6.00E-01 2.47E+00 O.OOE+00 2.14E+00 1.50E+00 6.25E+00 7.90E+00 6.91 E+00 -1.40E+00 8.88E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( T LE 9 C Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts September-03 1.60E+02 2.14E+02 1.60E-01 2.80E+00 3.90E+00 2.80E+00 -4.60E+01 7.20E+01 -7.90E+00 3.90E+01 November-03 2.52E+02 1.61E+02 3.15E+00 1.50E+00 1.27E+01 1.97E+00 -2.OOE+01 2.47E+01 2.70E+00 4.77E+00 March-04 1.07E+03 1.65E+02 6.30E-01 1.63E+00 1.91 E+01 2.96E+00 -6.OOE+00 2.63E+00 -5.90E+00 6.74E+00 May-04 -1.IOE+02 1.97E+02 4.30E+00 1.97E+00 2.26E+01 3.13E+00 -4.70E+01 3.78E+01 -2.05E+01 1.00E+01 August-04 -7.00E+01 1.81 E+02 9.30E-01 9.38E-01 6.00E+00 1.81E+00 1.OOE+01 3.62E+01 5.00E-01 5.26E+00 November-04 O.OOE+00 1.65E+02 8.40E-01 1.14E+00 7.90E+00 1.97E+00 1.90E+01 5.10E+01 -1.00E-01 4.94E+00 August-03 2.12E+02 2.14E+02 9.20E+00 4.60E+00 2.58E+01 3.20E+00 -1.30E+01 1.10E+02 -1.40E+00 2.40E+01 November-03 5.30E+01 1.56E+02 5.40E-01 1.20E+00 9.50E+00 1.81E+00 8.OOE+00 3.13E+01 -2.OOE+00 4.28E+00 March-04 2.64E+02 1.51 E+02 8.60E-01 9.05E-01 1.73E+01 1.43E+00 -2.00E+00 2.63E+01 8.80E+00 9.38E+00 May-04 -1.70E+02 1.97E+02 -1.31 E+00 9.05E-01 1.08E+01 2.30E+00 -2.40E+01 3.29E+01 -1.77E+01 8.23E+00 August-04 -7.OOE+01 1.81E+02 1.80E-01 9.38E-01 1.03E+01 2.30E+00 1.70E+01 -4.50E+00 -4.50E+00 5.10E+00 November-04 -4.00E+01 1.65E+02 -3.60E-01 1.10E+00 7.20E+00 2.142+00 3.OOE+00 2.47E+01 -4.70E+00 5.26E+00 September-03 4.58E+03 2.47E+02 1.802+00 3.50E+00 4.80E+00 3.20E+00 -1.50E+01 4.70E+01 7.60E+00 2.70E+01 November-03 4.91E+03 2.47E+02 -2.40E+00 8.39E-01 2.71E+00 1.17E+00 -1.20E+01 3.29E+01 2.70E+00 4.60E+00 March-04 4.76E+03 1.97E+02 5.00E-01 9.38E-01 4.53E+00 1.51 E+00 1.OOE+01 2.65E+01 1.30E+00 3.78E+00 May-04 4.60E+03 2.63E+02 1.90E-01 8.55E-01 4.80E+00 1.81E+00 -3.00E+00 3.29E+01 -2.40E+00 4.94E+00 August-04 4.55E+03 2.14E+02 2.50E-01 7.73E-01 4.50E+00 1.81E+00 6.50E+01 4.28E+01 -6.OOE-01 5.10E+00 November-04 4.21E+03 2.14E+02 1.30E-01 8.72E-01 4.10E+00 1.65E+00 -2.00E+00 3.29E+01 -1.00E+00 4.77E+00 LMIL0213,i September-03 3.89E+02 2.09E+02 1.27E+00 2.70E+00 5.20E+00 3.00E+00 -3.90E+01 2.47E+01 -9.90E+00 1.65E+01 November-03 1.20E+01 1.57E+02 1.60E+00 1.14E+00 5.15E+00 1.48E+00 -1.80E+01 2.14E+01 -2.70E+00 4.44E+00 March-04 -1.40E+01 1.48E+02 5.80E-01 8.55E-01 7.08E+00 1.60E+00 1.10E+01 2.47E+01 3.30E+00 3.78E+00 May-04 6.00E+01 1.97E+02 1.04E+00 1.07E+00 2.87E+00 1.63E+00 1.10E+01 3.29E+01 1.30E+00 4.61E+00 August-04 -1.60E+02 1.81E+02 2.34E+00 1.32E+00 7.20E+00 1.97E+00 3.00E+01 4.77E+01 -4.20E+00 5.10E+00 November-04 -1.10E+02 1.65E+02 2.14E+00 1.41E+00 6.30E+00 1.97E+00 -1.70E+01 2.96E+01 -2.90E+00 4.77E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TALE 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts MZ0 Ni-63 Lc Sr-90 Lc Tc-99 Lc lPu-238 Lc iPu-239/240 Lc September-03 9.00E-01 9.90E+00 -3.00E+00 4.10E+00 -3.60E-02 3.80E-01 1.50E-01 2.70E-01 November-03 4.70E+00 5.76E+00 9.00E-01 1.97E+00 -3.IOE+00 4.11E+00 4.OOE-02 7.73E-02 O.OOE+00 1.38E-03 March-04 6.40E+00 5.76E+00 8.00E-01 2.14E+00 -6.00E-01 5.43E+00 O.OOE+00 2.96E-04 O.OOE+00 2.96E-04 May-04 7.20E+00 7.24E+00 2.10E+00 2.30E+00 8.00E-01 4.77E+00 1.60E-02 2.63E-02 -1.83E-03 1.35E-03 August-04 2.60E+00 5.43E+00 -3.50E+00 1.81 E+00 1.20E+00 4.44E+00 -7.90E-04 9.21 E-04 1.30E-02 1.65E-02 November-04 2.60E+00 5.92E+00 -1.00E+00 1.97E+00 5.60E+00 5.92E+00 7.70E-03 1.46E-02 O.OOE+00 1.65E-04 August-03 7.30E+00 6.83E+00 -2.03E+00 3.50E+00 -4.80E-02 4.20E-01 -4.80E-02 4.20E-01 November-03 -4.20E+00 5.26E+00 -1.OOE-01 1.97E+00 -3.90E+00 5.76E+00 6.00E-02 9.71 E-02 7.60E-02 9.54E-02 March-04 8.OOE-01 4.94E+00 -3.00E-01 2.14E+00 -2.10E+00 4.61E+00 O.OOE+00 1.97E-03 -1.OOE-02 1.65E-02 May-04 8.70E+00 6.42E+00 1.30E+00 2.14E+00 3.60E+00 4.28E+00 5.60E-03 1.20E-02 4.002-03 1.22E-02 August-04 3.002+00 5.43E+00 -1.50E+00 1.97E+00 1.10E+00 5.43E+00 -4.80E-04 7.90E-04 -4.80E-04 7.90E-04 November-04 4.40E+00 5.59E+00 4.00E-01 1.81E+00 1.60E+00 6.42E+00 -1.90E-03 2.30E-03 0.002+00 1.81E-04 IMW'02;;IŽ September-03 -7.00E-01 1.20E+01 -1.OOE+00 4.IOE+00 -6.40E-02 4.50E-01 -1.20E-02 2.50E-01 November-03 -1.50E+00 4.61E+00 4.00E-01 1.97E+00 -4.60E+00 4.77E+00 -6.50E-03 1.10E-02 -3.20E-02 2.30E-02 March-04 -1.40E+00 4.11E+00 1.00E+00 2.30E+00 -8.00E-01 5.26E+00 -7.80E-03 1.28E-02 -1.60E-02 1.81E-02 May-04 1.90E+00 5.59E+00 1.20E+00 1.81E+00 3.30E+00 4.77E+00 -2.10E-03 1.97E-03 -2.10E-03 1.97E-03 August-04 1.50E+00 4.94E+00 -2.40E+00 1.81E+00 2.00E+00 5.43E+00 -3.70E-03 2.47E-03 -6.10E-04 1.00E-03 November-04 -1.80E+00 5.76E+00 -4.OOE-01 1.81E+00 1.10E+00 6.42E+00 -9.70E-04 1.60E-03 O.OOE+00 1.81 E-04 September-03 5.23E+00 7.07E+00 -1.70E+00 1.79E+00 1.12E-01 1.40E-01 7.20E-02 1.41 E-01 November-03 -1.002+00 6.25E+00 -3.OOE-01 1.81E+00 -4.10E+00 3.95E+00 O.OOE+00 1.65E-03 1.90E-01 1.81E-01 March-04 -2.00E+00 4.77E+00 -3.00E-01 2.14E+00 -4.OOE+00 4.77E+00 -2.60E-02 2.47E-02 6.10E-02 1.45E-01 May-04 2.20E+00 5.10E+00 -3.00E-01 1.97E+00 1.20E+00 5.10E+00 -6.00E-04 9.87E-04 -3.60E-03 2.47E-03 August-04 -5.OOE-01 5.10E+00 -3.00E-01 2.14E+00 1.90E+00 4.94E+00 -3.20E-03 1.97E-03 1.50E-02 1.97E-02 November-04 5.00E+00 7.57E+00 -1.20E+00 1.97E+00 4.002-01 6.09E+00 6.20E-03 1.02E-02 -5.60E-03 -3.78E-03 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TAXE 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts
- ruU~tI L% I II t I September-03 1.52E+00 1.41 E+00 5.00E-02 4.20E-01 -7.90E-03 1.1OE-01 O.OOE+00 5.00E-02 November-03 O.OOE+00 1.35E-01 -1.00E-02 1.65E-01 6.00E-03 6.74E-02 O.OOE+00 6.42E-04 March-04 5.00E-01 5.76E+00 -2.20E-02 2.47E-02 0.OOE+00 3.62E-04 O.OOE+00 2.96E-04 May-04 -2.50E+00 3.78E+00 -3.70E-03 1.58E-02 3.20E-03 5.26E-03 2.90E-03 4.77E-03 August-04 -4.60E+00 2.96E+00 -1.34E-02 1.43E-02 3.50E-03 5.76E-03 2.70E-03 5.10E-03 November-04 -3.90E+00 2.80E+00 3.20E-02 5.10E-02 -3.70E-03 3.13E-03 -1.40E-03 1.65E-03 FMW0 August-03 1.00E-01 4.70E+00 6.00E-02 4.40E-01 2.50E-02 6.70E-02 O.OOE+00 5.60E-02 November-03 -6.00E-01 1.81 E+00 -1.38E-01 1.10E-01 2.00E-02 3.29E-02 -8.50E-03 1.40E-02 March-04 -4.00E-01 1.81 E+00 -1.59E-01 8.88E-02 O.OOE+00 3.62E-04 O.OOE+00 3.29E-04 May-04 -2.30E+00 3.29E+00 -1.82E-02 1.22E-02 6.00E-03 8.06E-03 -3.70E-04 6.09E-04 August-04 -3.802+00 2.47E+00 -1.82E-02 1.23E-02 O.OOE+00 9.71 E-05 O.OOE+00 8.55E-05 November-04 -3.30E+00 4.28E+00 -2.10E-03 1.10E-02 5.20E-02 6.42E-02 O.OOE+00 5.59E-03 WMo-10 2A 7 7 I September-03 -8.00E-01 3.102+00 4.OOE-02 3.70E-01 I.OOE-03 1.20E-01 0.00E+00 4.30E-02 November-03 2.30E-01 1.30E+00 1.30E-01 1.79E-01 -6.60E-03 1.09E-02 -5.70E-03 9.38E-03 March-04 -5.00E-01 1.65E+00 -1.95E-01 1.17E-01 -8.00E-03 5.30E-02 -7.90E-03 9.20E-03 May-04 -4.30E+00 6.25E+00 -2.00E-02 1.97E-02 O.OOE+00 1.65E-04 -5.20E-04 8.55E-04 August-04 -2.40E+00 3.29E+00 2.10E-02 4.11 E-02 -2.70E-03 4.44E-03 O.OOE+00 1,81E-04 November-04 -3.60E+00 3.13E+00 -2.30E-03 1.18E-02 O.OOE+00 8.06E-04 -7.60E-04 1.25E-03
[M.-102B,'
September-03 -3.80E-01 1.27E+00 -9.OOE-02 4.00E-01 1.30E-02 3.62E-02 O.OOE+00 4.60E-02 November-03 3.00E-01 1.65E+00 1.60E-02 1.48E-01 2.30E-02 3.78E-02 O.OOE+00 4.94E-04 March-04 4.00E-01 1.97E+00 9.OOE-02 1.65E-01 3.00E-03 2.96E-02 1.50E-02 2.47E-02 May-04 2.90E+00 6.25E+00 -2.OOE-02 2.30E-02 6.70E-03 1.23E-02 -1.27E-03 1.48E-03 August-04 -4.10E+00 3.13E+00 -6.OOE-03 2.30E-02 0.OOE+00 1.81 E-04 -7.20E-04 1.18E-03 November-04 -2.40E+00 3.95E+00 3.20E-02 5.76E-02 2.20E-02 5.26E-02 -8.10E-04 1.33E-03 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TA .c 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts M54cICo-60 Lc I b9 c 1Ag-108m ,Lc ISb15 L September-03 -6.OOE-01 2.60E+00 -1.40E+00 2.40E+00 -1.00E-01 2.00E+00 1.13E+00 1.98E+00 -1.50E+00 6.40E+00 November-03 7.00E-01 2.30E+00 1.OOE+00 2.30E+00 5.00E-01 2.47E+00 1.OOE+00 2.30E+00 2.30E+00 6.91 E+00 March-04 No Sample Collected May-04 -2.60E+00 1.65E+00 3.00E-01 2.15E+00 8.OOE-01 1.81 E+00 -5.OOE-01 1.81E+00 -6.00E-01 5.43E+00 August-04 8.00E-01 1.81E+00 3.00E-01 2.14E+00 -1.80E+00 1.81E+00 -5.00E-01 1.81E+00 -2.70E+00 5.43E+00 November-04 -1.80E+00 1.97E+00 8.OOE-01 2.30E+00 -1.50E+00 1.65E+00 -8.00E-01 1.81E+00 -3.80E+00 5.43E+00 EI August-03 6.00E-01 2.63E+00 5.00E-01 2.63E+00 2.30E+00 1.81E+00 2.50E+00 1.81E+00 -1.10E+00 5.76E+00 November-03 -3.00E-01 2.03E+00 -2.90E+00 2.80E+00 1.50E+00 2.14E+00 5.00E-01 1.81E+00 1.70E+00 5.60E+00 March-04 2.70E+00 3.29E+00 -2.80E+00 3.78E+00 -2.50E+00 3.13E+00 -1.00E+00 2.30E+00 -3.10E+00 6.74E+00 May-04 6.00E-01 3.29E+00 3.80E+00 3.95E+00 6.00E-01 3.13E+00 9.00E-01 3.13E+00 -6.40E+00 8.06E+00 August-04 -1.20E+00 2.80E+00 7.00E-01 2.80E+00 -1.70E+00 2.14E+00 1.00E+00 1.97E+00 -2.00E+00 6.25E+00 November-04 1.60E+00 2.96E+00 -1.50E+00 3.13E+00 -6.00E-01 2.63E+00 -4.80E+00 2.80E+00 -8.00E-01 9.54E+00 September-03 -3.00E-01 3.13E+00 -4.00E-01 2.80E+00 1.20E+00 2.63E+00 5.00E-01 2.47E+00 -5.60E+00 7.07E+00 November-03 -1.20E+00 2.63E+00 2.OOE-01 2.30E+00 2.40E+00 1.81E+00 1.60E+00 1.81E+00 1.90E+00 5.92E+00 March-04 -1.70E+00 2.30E+00 -1.30E+00 3.13E+00 2.30E+00 2.14E+00 -5.00E-01 1.97E+00 -2.80E+00 6.74E+00 March-04 2.90E+00 2.47E+00 -3.40E+00 2.47E+00 -8.00E-01 2.30E+00 -2.OOE+00 2.30E+00 -1.20E+00 7.07E+00 May-04 2.80E+00 2.15E+00 -3.00E-01 2.30E+00 1.OOE-01 1.97E+00 2.00E-01 2.30E+00 -1.10E+00 6.91E+00 August-04 -1.70E+00 2.96E+00 3.00E-01 3.45E+00 -2.70E+00 2.30E+00 1.40E+00 2.14E+00 5.00E-01 6.58E+00 November-04 -3.00E-01 2.30E+00 -9.OOE-01 3.13E+00 2.00E+00 2.47E+00 1.00E-01 5.26E+00 3.80E+00 7.07E+00 September-03 -2.70E+00 2.60E+00 -2.50E+00 3.80E+00 -1.OOE-01 2.60E+00 -3.00E-01 2.20E+00 8.00E+00 7.20E+00 November-03 8.00E-01 2.30E+00 4.00E-01 2.47E+00 1.00E-01 2.14E+00 -6.00E-01 2.14E+00 -3.50E+00 5.92E+00 March-04 2.20E+00 2.30E+00 -7.00E-01 2.30E+00 1.OOE+00 1.81 E+00 7.OOE-01 1.82E+00 2.60E+00 5.76E+00 May-04 8.00E-01 2.80E+00 3.30E+00 2.80E+00 3.00E-01 1.97E+00 -1.40E+00 3.95E+00 1.30E+00 6.58E+00 August-04 8.00E-01 1.81E+00 -1.50E+00 1.81E+00 7.00E-01 1.97E+00 -1.30E+00 1.81E+00 -1.90E+00 5.92E+00 November-04 8.00E-01 1.65E+00 5.OOE-01 1.81E+00 7.00E-01 1.65E+00 -9.OOE-01 1.81E+00 -3.60E+00 5.92E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
( TAL.._E 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts V~egi~di I Cs-1 34 Lc I Cs137 Lc l Eu-1 52 Lc I Eu-154 Lc I Eu-1 55 Lc September-03 7.00E-C01 2.60E+00 -1.OOE+00 2.40E+00 -3.00E-01 5.60E+00 O.OOE+00 6.40E+00 8.60E+00 8.60E+00 November-03 2.50E+C 10 2.96E+00 -6.00E-01 2.96E+00 2.OOE-01 6.58E+00 8.OOE-01 7.90E+00 -6.OOE-01 9.54E+00 March-04 May-04 -I.OOE+C i0 2.30E+00 -4.00E-01 2.15E+00 -2.30E+00 5.92E+00 -1.70E+00 5.10E+00 2.90E+00 9.05E+00 August-04 1.50E+O'0 1.81 E+00 O.OOE+00 1.97E+00 8.30E+00 5.76E+00 1.40E+00 5.43E+00 2.10E+00 8.55E+00 November-04 -4.00E-O 01 1.81E+00 O.OOE+00 1.81E+00 -4.1 OE+00 5.26E+00 -2.OOE+00 5.26E+00 9.40E+00 8.23E+00 August-03 4.OOE-O 01 2.80E+00 1.30E+00 2.14E+00 -1.50E+00 5.59E+00 6.50E+00 8.06E+00 2.40E+00 6.91 E+00 November-03 2.20E+O 0 2.50E+00 -3.70E+00 2.70E+00 5.60E+00 5.43E+00 -8.00E-01 6.40E+00 6.60E+00 7.60E+00 March-04 -1.00E+O 0 3.32E+00 -1.00E-01 2.63E+00 5.20E+00 6.74E+00 -2.20E+00 6.91 E+00 -4.60E+00 1.04E+01 May-04 -1.OOE-O01 2.96E+00 -5.OOE+00 3.62E+00 -4.20E+00 7.40E+00 -2.50E+00 7.24E+00 -4.70E+00 1.OOE+01 August-04 4.00E-O 1 2.14E+00 -6.00E-01 2.47E+00 1.OOE-01 5.59E+00 -3.10E+00 6.91 E+00 2.90E+00 7.57E+00 November-04 -1.40E+0 '0 3.29E+00 -1.OOE+00 2.96E+00 -1.OOE+00 7.40E+00 6.90E+00 8.39E+00 5.20E+00 1.12E+01 September-03 1.40E+O 0 3.29E+00 4.OOE-01 2.80E+00 -1.60E+00 5.92E+00 -2.10E+00 7.24E+00 3.80E+00 9.21 E+00 November-03 1.40E+O 0 2.14E+00 2.30E+00 2.30E+00 5.10E+00 5.10E+00 -9.OOE-01 5.76E+00 2.20E+00 7.90E+00 March-04 4.OOE-0 1 2.96E+00 -3.90E+00 2.63E+00 -3.70E+00 7.07E+00 -6.00E-01 5.59E+00 4.OOE-01 1.07E+01 March-04 7.00E-0 1 2.30E+00 6.OOE-01 2.63E+00 -8.OOE-01 6.91 E+00 -2.30E+00 7.07E+00 -1.20E+00 1.09E+01 May-04 -2.70E+O 0 2.47E+00 1.30E+00 2.47E+00 6.00E-01 6.25E+00 -2.80E+00 6.25E+00 -2.80E+00 9.71 E+00 August-04 1.90E+O 0 2.96E+00 -1.OOE+00 1.97E+00 1.40E+00 6.58E+00 8.70E+00 6.74E+00 -4.50E+00 8.06E+00 November-04 -4.00E+00 3.45E+00 -3.OOE-01 2.80E+00 6.40E+00 6.91 E+00 4.70E+00 1.07E+01 -2.20E+00 8.55E+00 M - 3c[
September-03 2.00E+00 3.20E+00 8.OOE-01 2.60E+00 4.30E+00 6.00E+00 5.80E+00 1.04E+01 2.90E+00 9.00E+00 November-03 1.60E+00 2.47E+00 1.00E+00 2.30E+00 1.80E+00 5.26E+00 2.10E+00 7.07E+00 -2.20E+00 7.57E+00 March-04 -1.90E+00 2.80E+00 -3.OOE-01 2.30E+00 5.90E+00 5.26E+00 1.10E+00 5.92E+00 -5.OOE+00 6.42E+00 May-04 1.10E+00 2.47E+00 -3.1 OE+00 2.63E+00 3.90E+00 6.25E+00 -2.60E+00 9.04E+00 -5.70E+00 7.24E+00 August-04 6.00E-01 1.81 E+00 7.OOE-01 1.81E+00 9.00E-01 5.10E+00 -4.20E+00 4.61 E+00 5.60E+00 7.40E+00 November-04 9.00E-01 2.14E+00 -9.OOE-01 1.81 E+00 -4.70E+00 5.1 OE+00 7.OOE-01 5.26E+00 -3.1 OE+00 7.57E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( Tk 1_E 9 C Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Sarnple 3 Date~ Er..~ e. .. I.rB I Tritium Lc IGross Alpha Lc I. Gross Beta Lc 1 C-14 Lc I Fe-bb Lc I MW.02G C September-03 5.75E+03 2.63E+02 -9.90E-01 3.40E+00 5.20E+00 3.20E+00 -2.50E+01 5.50E+01 -1.OOE+01 3.80E+01 November-03 6.59E+03 2.47E+02 2.13E+00 1.48E+00 3.42E+00 1.45E+00 -2.OOE+00 2.47E+01 1.60E+00 4.44E+00 March-04 May-04 6.63E+03 2.80E+02 1.07E+00 9.21 E-01 4.12E+00 1.37E+00 -6.OOE+00 2.63E+01 -1.40E+00 3.95E+00 August-04 6.96E+03 2.47E+02 1.27E+00 1.18E+00 7.40E+00 1.97E+00 2.OOE+01 3.78E+01 7.OOE-01 4.61 E+00 November-04 6.01E+03 2.30E+02 1.01 E+00 1.32E+00 5.60E+00 1.97E+00 1.60E+01 4.77E+01 -2.30E+00 4.94E+00 MW-b1 August-03 3.50E+02 2.14E+02 4.20E+00 2.14E+00 1.28E+01 1.28E+00 -1.80E+01 3.95E+01 -2.40E+00 1.55E+01 November-03 9.OOE+01 2.14E+02 1.16E+00 1.41 E+00 9.35E+00 1.15E+00 -1.50E+01 3.62E+01 3.50E+00 4.28E+00 March-04 2.11 E+02 1.51 E+02 1.14E+00 1.20E+00 1.26E+01 1.81 E+00 1.OOE+01 3.13E+01 3.40E+00 3.95E+00 May-04 -6.00E+01 1.97E+02 3.80E+00 2.30E+00 6.60E+00 2.14E+00 -8.OOE+00 4.11E+01 -8.10E+00 5.1OE+00 August-04 -1.60E+02 1.81 E+02 7.OOE-02 8.72E-01 4.20E+00 1.81 E+00 2.30E+01 4.28E+01 -7.OOE-01 5.43E+00 November-04 1.40E+02 1.65E+02 -3.20E-02 7.40E-01 4.60E+00 1.65E+00 -4.20E+01 3.78E+01 2.60E+00 5.10E+00 September-03 -2.20E+02 2.14E+02 4.1 OE+00 1.97E+00 8.90E+00 2.14E+00 -3.OOE+00 4.28E+01 -7.20E+00 1.38E+01 November-03 3.OOE+01 1.81 E+02 1.79E+00 1.28E+00 1.10E+01 1.81 E+00 -8.OOE+00 2.80E+01 0.OOE+00 2.63E+00 March-04 -2.55E+02 1.55E+02 2.OOE+00 1.41 E+00 8.20E+00 2.14E+00 4.OOE+00 2.30E+01 -3.50E+00 6.42E+00 March-04 -2.13E+02 1.53E+02 1.83E+00 1.37E+00 4.70E+00 1.81 E+00 -2.OOE+00 2.14E+01 -4.OOE+00 6.25E+00 May-04 4.1 OE+02 2.15E+02 2.29E+00 1.1OE+00 5.62E+00 1.50E+00 4.OOE+00 2.80E+01 -5.20E+00 3.95E+00 August-04 O.OOE+00 1.81 E+02 2.49E+00 1.43E+00 8.20E+00 1.97E+00 1.OOE+00 3.78E+01 -2.60E+00 5.26E+00 November-04 5.OOE+01 1.65E+02 2.53E+00 1.56E+00 1.30E+01 2.47E+00 1.40E+01 3.78E+01 -2.80E+00 6.74E+00 September-03 2.70E+02 2.14E+02 2.07E+00 1.55E+00 1.07E+01 1:13E+00 -7.OOE+00 2.63E+01 -7.50E+00 1.31 E+01 November-03 -1.90E+02 1.64E+02 5.1 OE+00 2.14E+00 9.30E+00 1.97E+00 -1.OOE+00 2.63E+01 5.90E+00 4.28E+00 March-04 -2.40E+02 1.53E+02 -7.OOE-02 1.12E+00 7.68E+00 1.41 E+00 -1.OOE+00 2.14E+01 -2.IOE+00 6.91 E+00 May-04 1.80E+02 2.15E+02 1.70E+00 1.27E+00 6.40E+00 1.65E+00 -5.OOE+00 2.80E+01 9.OOE-01 4.61 E+00 August-04 -1.OOE+01 1.65E+02 7.80E+00 2.63E+00 1.49E+01 2.47E+00 -5.00E+0O 2.96E+01 -1.60E+00 5.10E+00 November-04 1.1 OE+02 1.81 E+02 2.50E+00 1.97E+00 8.00E+00 1.65E+00 -1.80E+01 1.92E+02 -3.30E+00 4.94E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TUE 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCiIL)
Yankee Nuclear Power Station Rowe, Massachusetts September-03 -4.I02+00 1.20E+01 -3.10E+00 4.202+00 4.10E-02 4.60E-01 1.28E-01 2.70E-01 November-03 -1.60E+00 5.26E+00 -7.OOE-01 I1.97E+00 -4OOE-01 3.45E+00 -9.10OE-03 1 .53E-02 -9.1 OE-03 1.532-02 March-04 May-04 4.702+00 4.942+00 9.002-01 1.65E+00 -1.302+00 4.1 12+00 -1.45E-03 1.20E-03 -3.60E-04 5.92E-04 August-04 7.002-01 4.94E+00 -2.002-01 1.812E+00 1.60E+00 5.102+00 0.002+00 2.142-04 -4.20E-04 6.91 E-04 November-04 -5.20E+00 7.07E+00 -1.90E+00 1.812E+00 1.80E+00 6.912E+00 -1.90E-03 2.30E-03 2.60E-03 1.10E-02 M R10 August-03 -9.002-01 4.612E+00 -1.60E+00 1.812+00 -1.302-02 1.05E-01 4.50E-02 1.04E-01 November-03 4.90E+00 6.30E+00 -7.00E-01 2.102+00 -2.60E+00 4.94E+00 3.002-02 1.30E-01 7.60E-02 1.20E-01 March-04 4.602+00 4.44E+00 -2.20E+00 2.14E+00 -3.002+00 4.77E+00 -5.70E-02 2.632-02 1.28E-01 1.53E-01 May-04 -5.002-01 6.09E+00 1.202+00 1.972+00 -9.OOE-01 3.952+00 -1.18E-03 1.122-03 -1.572-03 1.302-03 August-04 -3.302+00 4.772+00 -1.40E+00 2.302+00 1.702+00 6.74E+00 0.002+00 2.142-04 -4.202-04 6.912E-04 November-04 -6.002-01 5.59E+00 -2.302+00 1.65E+00 1.40E+00 4.612E+00 -3.302-03 5.43E-02 0.002+00 2.142-03 September-03 4.902+00 6.582+00 -2.902+00 1.812E+00 4.802-02 1.582-01 -2.702-02 1.812-0 1 November-03 3.802+00 5.262+00 -3.002-01 2.142+00 -7.102+00 5.26E+00 0.002+00 1.372-03 8.902-02 1.15E-01 March-04 5.002+00 4.28E+00 8.002-01 1.972+00 -2.5OE+-00 5.593 0.002+00 3.29E-04 -6.202-04 1.022-03 March-04 6.502+00 4.772+00 2.002-01 2.142+00 -4.402+00 4.7705 -1.002-03 1.81 2-02 -3.502-04 5.762-04 May-04 6.902+00 5.102E+00 -9.002-01 2.152+00 -2.30E+00 4.442+00 .1.10E.03 1.27E.03 0.002+00 2.47E+00 August-04 1.60E+00 5.102E+00 -1.102+00 2.142+00 2.50E+00 6.25E+00 -4.50E-04 7.402-04 7.902-03 1.382-02 November-04 1.802+00 6.422+00 -1.202+00 1.972+00 1.002-01 5.762+00 4.402-03 1.07E-02 -9.502-04 1.56E-03 September-03 -2.402-01 5.592+00 -2.602+00 1.882+00 -2.80E-02 1.14E-01 1.702-01 1.972-01 November-03 1.502+00 5.102+00 1.702+00 2.302+00 -3.302+00 3.95E+00 4.701E-02 8.552-02 4.702-02 8.55E..02 March-04 3.502+00 4.282+00 -2.002-01 1.972+00 -4.002-01 5.102+/-+00 8.002-03 1.81E-02 -2.502-03 1.812-03 May-04 3.702+00 5.102E+00 -8.002-01 1.972+00 -1.802+00 4.28E+00 -6.002-04 9.712E-03 3.302-03 9.382-03 August-04 5.202+00 6.252+00 -7.002-01 1.652+00 -9.302+00 7.572+00 0.002+00 2.63E-04 0.002+00 2.63E-04 November-04 9.002-011 1.022+01 -2.002+00 1.972+00 3.702+00 5.922+00 1.60E-02 1.972-02 -1.202-03 1.972-03 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
( TA__E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts September-03 1.10E+00 3.20E+00 7.00E-02 3.80E-01 -3.50E-02 1.00E-01 -9.OOE-03 1.30E-01 November-03 -1.40E+00 1.81 E+00 5.00E02 1.81 E-01 O.OOE+00 7.24E-04 1.20E-02 4.77E-02 March-04 May-04 7.OOE-01 1.81 E+00 -5.00E-03 1.97E-02 O.OOE+00 1.38E-04 -9.1 OE-04 1.05E-03 August-04 -5.00E+00 2.63E+00 -5.OOE-03 2.80E-02 -5.50E-03 6.42E-03 8.00E-03 1.32E-02 November-04 7.00E-01 3.45E+00 -8.10E-03 1.02E-02 1.40E-02 3.62E-02 -1.09E-03 1.27E-03 August-03 -9.OOE+00 6.42E+00 -9.OOE-02 1.81E-01 2.30E-02 3.78E-02 -8.90E-03 1.46E-02 Pb/Bi-214 20.7 and 10.7 pCi/L November-03 1.50E+00 1.97E+00 1.20E-01 1.80E+00 O.OOE+00 4.60E-04 1.50E-02 2.50E-02 March-04 -1.02E+00 1.22E+00 -1.75E-01 9.71 E-02 4.20E-02 3.95E-02 -1.03E-02 1.20E-02 May-04 -2.15E+00 1.63E+00 -1.81 E-02 1.17E-02 6.30E-03 7.24E-03 -3.50E-04 5.76E-04 August-04 -2.00E-01 3.45E+00 -1.22E-02 1.41 E-02 O.OOE+00 9.54E-05 O.OOE+00 8.39E-05 November-04 -3.OOE-01 6.09E+00 -1.55E-01 1.45E-01 -2.90E-02 8.55E-02 -6.00E-03 6.91 E-02 iMW-i O .3 September-03 4.40E-01 1.25E+00 -5.00E-02 1.81 E-01 O.OOE+00 5.59E-04 -6.30E-03 1.04E-02 November-03 -4.00E+00 3.45E+00 -2.12E-01 1.04E-01 O.OOE+00 4.61 E-04 O.OOE+00 3.78E-04 Pb & Bi-214 (46.3 & 71.9 pCi/L)
March-04 1.80E+00 3.78E+00 -3.OOE-03 3.29E-02 1.20E-02 1.97E-02 -1.1 OE-03 1.27E-03 March-04 6.60E+00 4.94E+00 -1.50E-02 2.63E-02 O.OOE+00 2.96E-04 O.OOE+00 2.47E-04 May-04 -8.00E-01 5.59E+00 -1.60E-02 2.96E-02 1.00E-02 1.81 E-02 O.OOE+00 2.47E-04 August-04 -3.70E+00 2.63E+00 -1.52E-02 1.32E-02 -4.OOE-04 6.58E-04 O.OOE+00 8.23E-05 November-04 2.20E+00 3.62E+00 -1.22E-02 1.17E-02 2.10E-02 4.44E-02 -1.34E-03 1.56E-03 September-03 -1.40E+00. 2.14E+00 1.00E-02 2.14E-01 O.OOE+00 6.58E-04 2.20E-02 3.62E-02 November-03 -1.20E+00 1.97E+00 -2.02E-01 1.07E-01 2.00E-02 3.29E-02 -6.30E-03 1.04E-02 Ra-226, Bi-214, Pb-214, Pb-212 March-04 6.30E+00 3.62E+00 -1.90E-02 1.81 E-02 O.OOE+00 2.47E-04 -4.40E-04 7.24E-04 69.2, 22.2, 25.8 & 7.63 pCi/L May-04 -3.00E+00 3.62E+00 O.OOE+00 4.28E-04 -1.80E-03 1.97E-03 -2.00E-02 2.30E-02 August-04 6.00E-01 1.97E+00 -2.19E-01 1.18E-01 2.10E-02 3.45E-02 -6.30E-03 1.04E-02 November-04 -1.00E-01 3.29E+00 7.60E-02 8.39E-02 7.40E-02 9.05E-02 O.OOE+00 7.57E-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TL E9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Ispipl:ate S A -L l Mn-54 Lc: C-6 Lc Nb-94 Lc Ag-i108m Lc: Sb-i125 Lc71 November-03 7.00E-01 1.65E+00 1.12E+00 1.63E+00 5.20E-01 1.37E+00 1.05E+00 1.35E+00 1.50E+00 3.78E+00 March-04 2.60E+00 2.96E+00 -3.70E+00 2.96E+00 1.30E+00 2.30E+00 -2.00E+00 2.30E+00 8.00E-01 6.58E+00 May-04 1.70E+00 2.14E+00 -1.10E+00 2.63E+00 3.10E+00 2.15E+00 -2.20E+00 1.97E+00 -1.50E+00 6.09E+00 May-04 O.OOE+00 1.97E+00 -1.30E+00 1.81E+00 2.20E+00 2.47E+00 -4.00E-01 2.15E+00 -1.80E+00 4.94E+00 August-04 2.50E+00 2.80E+00 -2.00E+00 4.11E+00 -4.00E-01 3.13E+00 O.OOE+00 2.47E+00 -1.002+00 7.73E+00 November-04 -9.OOE-01 2.63E+00 9.OOE-01 2.80E+00 -1.10E+00 2.14E+00 -7.OOE-01 2.14E+00 1.40E+00 8.23E+00 November-03 -1.30E+00 2.80E+00 -4.00E-01 3.13E+00 8.00E-01 2.47E+00 O.OOE+00 1.97E+00 -1.40E+00 6.74E+00 March-04 2.80E+00 2.30E+00 -1.50E+00 2.63E-01 6.OOE-01 2.63E+00 -5.00E-01 2.14E+00 -3.20E+00 5.92E+00 March-04 9.00E-01 2.80E+00 1.40E+00 3.62E+00 -8.00E-01 2.30E+00 3.00E-01 2.30E+00 2.40E+00 9.21 E+00 May-04 1.80E+00 2.80E+00 -4.00E-01 3.45E+00 3.00E-01 2.15E+00 8.00E-01 2.30E+00 6.30E+00 6.91E+00 August-04 -1.60E+00 2.63E+00 -2.90E+00 3.13E+00 -3.OOE-01 2.47E+00 7.00E-01 1.97E+00 -2.70E+00 5.76E+00 November-04 O.OOE+00 2.30E+00 -8.00E-01 1.97E+00 -1.30E+00 1.60E+00 -7.OOE-01 2.14E+00 -1.10E+00 5.76E+00 August-03 5.00E-01 7.30E+00 -1.00E+00 8.50E+00 1.90E+00 6.00E+00 -6.00E-01 5.40E+00 -9.10E+00 2.OOE+01 November-03 -9.OOE-01 1.65E+00 -1.02E+00 1.55E+00 8.30E-01 1.50E+00 1.09E+00 1.48E+00 -6.00E-01 4.44E+00 March-04 -2.20E+00 2.63E+00 1.20E+00 3.45E+00 7.00E-01 2.30E+00 6.00E-01 2.15E+00 2.00E+00 6.58E+00 May-04 1.50E+00 2.47E+00 -1.30E+00 3.13E+00 -2.00E-01 1.81E+00 -5.00E-01 2.15E+00 O.OOE+00 6.42E+00 August-04 -3.30E+00 3.62E+00 -2.20E+00 3.62E+00 1.00E-01 2.63E+00 3.50E+00 2.63E+00 7.90E+00 9.05E+00 November-04 2.30E+00 2.14E+00 -3.002+00 2.47E+00 -9.OOE-01 1.65E+00 -2.40E+00 1.97E+00 -2.70E+00 5.92E+00 September-03 -7.00E-01 3.20E+00 -9.OOE-01 3.60E+00 5.00E-01 2.40E+00 -2.OOE-01 2.20E+00 -1.50E+00 6.60E+00 November-03 -4.00E-01 1.81 E+00 7.40E-01 1.63E+00 -3.00E-01 1.46E+00 6.70E-01 1.55E+00 -2.1 OE+00 4.28E+00 March-04 -1.20E+00 3.13E+00 -2.80E+00 3.62E+00 1.60E+00 2.47E+00 -2.00E-01 1.81E+00 -8.00E-01 6.58E+00 March-04 -2.90E+00 2.14E+00 O.OOE+00 2.14E+00 -6.OOE-01 1.81E+00 1.10E+00 1.81E+00 -2.90E+00 5.92E+00 May-04 1.OOE+00 2.30E+00 3.70E+00 2.63E+00 5.00E-01 1.97E+00 1.002+00 1.97E+00 -5.OOE-01 6.58E+00 August-04 -5.00E-01 2.63E+00 8.00E-01 2.80E+00 -7.00E-01 2.96E+00 -1.20E+00 2.30E+00 2.10E+00 7.73E+00 November-04 -1.80E+00 3.29E+00 -1.80E+00 4.44E+00 -6.00E-01 2.96E+00 -3.00E-01 2.63E+00 7.60E+00 9.21 E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
( Tf. E9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts k
November-03 3.00E-01 1.81E+00 6.90E-01 1.27E+00 2.00E+00 4.44E+00 -1.70E+00 4.11E+00 1.40E+00 6.42E+00 March-04 -1.60E+00 2.47E+00 1.80E+00 2.30E+00 7.00E-01 6.42E+00 1.80E+00 6.74E+00 '3.00E+00 9.21 E+00 May-04 6.00E-01 2.63E+00 -4.10E+00 2.63E+00 -2.40E+00 5.76E+00 1.10E+00 6.74E+00 1.31E+01 8.72E+00 May-04 1.60E+00 2.30E+00 -1.80E+00 2.15E+00 -1.50E+00 6.42E+00 3.50E+00 7.24E+00 4.40E+00 9.71E+00 August-04 8.OOE-01 3.13E+00 -1.40E+00 2.63E+00 2.10E+00 7.24E+00 -5.90E+00 7.24E+00 2.00E-01 9.38E+00 November-04 2.00E-01 2.80E+00 2.00E-01 2.80E+00 -4.80E+00 6.25E+00 5.1OE+00 7.73E+00 -1.OOE-01 8.72E+00 MM 0 U November-03 -6.OOE-01 2.96E+00 -3.20E+00 2.80E+00 2.30E+00 6.09E+00 3.40E+00 8.88E+00 2.00E-01 8.23E+00 March-04 -5.00E-01 3.13E+00 4.70E+00 3.45E+00 4.00E-01 5.59E+00 2.60E+00 7.90E+00 2.90E+00 8.55E+00 March-04 -4.00E-01 2.80E+00 -4.60E+00 3.78E+00 -9.OOE-01 5.92E+00 2.10E+00 9.38E+00 -3.30E+00 8.55E+00 May-04 -4.20E+00 2.96E+00 3.00E-01 2.63E+00 3.60E+00 6.42E+00 -1.30E+00 7.73E+00 -6.00E-01 8.23E+00 August-04 2.1 OE+00 2.30E+00 2.10E+00 2.47E+00 4.00E-01 6.25E+00 1.10E+00 7.73E+00 5.70E+00 9.87E+00 November-04 -6.00E-01 2.47E+00 -1.20E+00 1.97E+00 1.40E+00 5.76E+00 4.40E+00 5.26E+00 7.OOE-01 7.90E+00 tMW,W-105B-B August-03 -1.OOE-01 6.80E+00 4.00E-01 6.70E+00 9.00E-01 1.30E+01 4.90E+00 1.80E+01 9.90E+00 2.00E+01 November-03 2.00E-01 1.65E+00 -1.37E+00 1.51 E+00 -1.OOE-01 4.28E+00 2.00E-01 4.77E+00 2.90E+00 6.91 E+00 March-04 -1.OOE-01 2.63E+00 -1.OOE+00 2.15E+00 1.70E+00 5.92E+00 -9.70E+00 8.23E+00 -4.50E+00 8.39E+00 May-04 1.1OE+00 2.96E+00 5.00E-01 1.97E+00 -3.20E+00 5.43E+00 5.40E+00 8.23E+00 1.80E+00 7.07E+00 August-04 5.00E-01 3.62E+00 -1.70E+00 2.63E+00 4.90E+00 6.91 E+00 9.00E-01 6.58E+00 -1.90E+00 9.21 E+00 November-04 O.OOE+00 2.47E+00 -1.1OE+00 2.14E+00 6.60E+00 6.25E+00 -1.80E+00 5.76E+00 9.00E-01 9.38E+00 September-03 -8.00E-01 2.80E+00 2.40E+00 3.20E+00 8.00E-01 5.40E+00 -5.00E-01 6.OOE+00 2.10E+00 7.60E+00 November-03 9.00E-01 1.65E+00 -2.OOE-01 1.46E+00 2.10E+00 4.61 E+00 5.00E-01 4.77E+00 6.00E-01 6.91 E+00 March-04 5.00E-01 2.96E+00 4.00E-01 2.47E+00 -2.10E+00 6.91 E+00 2.20E+00 8.06E+00 -5.40E+00 9.71E+00 March-04 5.OOE-01 1.97E+00 -7.00E-01 2.30E+00 -2.70E+00 5.76E+00 2.70E+00 6.42E+00 -6.70E+00 8.88E+00 May-04 -2.20E+00 2.15E+00 2.00E-01 2.15E+00 1.80E+00 6.25E+00 5.00E+00 5.59E+00 3.1 OE+00 8.72E+00 August-04 2.1 OE+00 3.13E+00 -2.70E+00 2.47E+00 -1.70E+00 6.42E+00 3.50E+00 8.06E+00 -2.00E-01 9.71 E+00 November-04 2.70E+00 3.62E+00 1.80E+00 3.29E+00 -1.OOE+00 6.91 E+00 4.80E+00 1.09E+01 -9.10E+00 9.87E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
TAL_.E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Tiim L GrsAlh Lc GosBt Lc C14 L Fe-55 Lc I November-03 -3.00E+01 1.84E+02 6.802-01 1.052+00 1.13E+01 1.81E+00 -7.00E+00 2.14E+01 3.80E+00 4.28E+00 March-04 1.00E+01 1.65E+02 1.58E+00 1.41E+00 1.30E+01 2.30E+00 5.00E+00 2.96E+01 -1.30E+00 4.61E+00 May-04 -3.80E+02 1.97E+02 1.17E+00 1.27E+00 7.50E+00 1.97E+00 2.50E+01 3.13E+01 -2.00E-01 4.61E+00 May-04 -1.30E+02 1.97E+02 2.10E+00 1.40E+00 7.OOE+00 2.15E+00 -2.10E+01 4.44E+01 7.OOE-01 4.28E+00 August-04 -2.10E+02 1.81E+02 1.71E+00 9.87E-01 8.30E+00 1.81E+00 -7.40E+01 4.44E+01 7.00E+00 2.63E+01 November-04 -3.00E+01 1.65E+02 1.42E+00 1.40E+00 1.00E+01 2.14E+00 -1.30E+01 3.78E+01 -1.70E+00 5.76E+00 November-03 6.50E+01 1.55E+02 -1.23E+00 5.43E-01 7.20E+00 2.30E+00 -1.OOE+01 3.45E+01 1.50E+00 4.94E+00 March-04 1.OOE+01 1.81 E+02 -1.30E-01 1.23E+00 1.08E+01 2.30E+00 2.90E+01 2.96E+01 1.20E+00 4.61 E+00 March-04 3.00E+01 1.81E+02 2.40E-01 1.20E+00 7.30E+00 2.14E+00 5.70E+01 3.29E+01 -1.60E+00 4.94E+00 May-04 3.20E+02 2.15E+02 -5.OOE-01 8.06E-01 2.90E+00 1.65E+00 -3.OOE+00 3.29E+01 4.00E-01 4.44E+00 August-04 -1.20E+02 1.81E+02 1.182+00 9.21E-01 8.60E+00 1.97E+00 -5.OOE+01 3.62E+01 4.60E+00 5.1OE+00 November-04 O.OOE+00 1.65E+02 1.77E+00 1.48E+00 6.80E+00 2.14E+00 3.OOE+00 3.62E+01 2.70E+00 5.10E+00 August-03 4.85E+03 3.80E+02 -2.50E+00 3.60E+00 1.13E+01 2.30E+00 -1.90E+01 7.70E+01 -8.50E+00 3.30E+01 November-03 5.22E+03 2.47E+02 5.50E+00 2.14E+00 1.28E+01 1.97E+00 -2.10E+01 2.63E+01 8.70E+00 4.77E+00 March-04 4.89E+03 2.14E+02 3.26E+00 1.51E+00 1.58E+01 1.65E+00 5.00E+00 2.47E+01 -2.40E+00 6.09E+00 May-04 4.53E+03 2.30E+02 3.17E+00 1.48E+00 1.40E+01 1.97E+00 -1.10E+01 3.45E+01 1.50E+00 4.28E+00 August-04 5.28E+03 2.30E+02 5.10E+00 1.81E+00 1.37E+01 2.30E+00 -1.80E+01 3.13E+01 -1.OOE-01 4.44E+00 November-04 5.20E+03 2.30E+02 5.60E+00 2.30E+00 1.49E+01 1.97E+00 -6.00E+00 3.78E+01 -9.60E+00 8.23E+00 05C7.p1 September-03 1.86E+03 2.30E+02 1.20E+00 3.70E+00 9.32E+00 2.30E+00 -2.40E+01 7.OOE+01 -6.40E+00 3.80E+01 November-03 3.72E+03 2.30E+02 2.50E+00 1.48E+00 8.20E+00 1.81 E+00 -1.90E+01 2.63E+01 3.90E+00 4.77E+00 March-04 3.96E+03 1.97E+02 5.90E-01 1.25E+00 5.30E+00 1.65E+00 3.002+00 3.29E+01 2.30E+00 3.78E+00 March-04 3.52E+03 1.81E+02 -4.60E-01 1.0857 7.10E+00 1.81 -3.00E+00 3.13E+01 6.10E+00 4.11E+00 May-04 2.06E+03 2.15E+02 1.50E+00 1.97E+00 7.50E+00 2.15E+00 6.00E+00 4.11E+01 2.00E+00 4.77E+00 August-04 4.49E+03 1.81E+02 6.50E-01 9.71E-01 5.10E+00 1.97E+00 1.20E+01 3.13E+01 1.20E+00 4.44E+00 November-04 4.31E+03 2.14E+02 2.30E-01 1.27E+00 5.00E+00 1.81E+00 2.70E+01 3.45E+01 3.00E+00 5.59E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
C./ TALE 9 C Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts
~I Lc Pu-239/240 Lc November-03 -1.70E+00 4.61E+00 2.40E+00 2.30E+00 -3.40E+00 3.13E+00 -4.OOE-( )3 6.58E-03 8.OOE-02 9.38E-02 March-04 -8.00E-01 4.94E+00 1.20E+00 2.14E+00 -1.50E+00 4.11E+00 -5.80E-C04 9.54E-04 -1.16E-03 1.35E-03 May-04 6.30E+00 4.61 E+00 7.00E-01 2.15E+00 O.OOE+00 5.92E+00 -1.50E-( 33 1.45E-03 -1.50E-03 1.45E-03 May-04 4.00E+00 5.59E+00 -7.00E-01 1.65E+00 5.00E-01 5.92E+00 -1.10E-(04 1.81 E-04 3.50E-03 6.74E-03 August-04 3.30E+00 5.10E+00 6.OOE-01 1.65E+00 -2.70E+00 4.77E+00 1.60E-()2 1.97E-02 -6.10E-04 1.OOE-03 November-04 8.OOE-01 6.09E+00 -2.10E+00 1.97E+00 6.10E+00 6.42E+00 O.OOE+( 00 1.61 E-04 -1.70E-03 1.97E-03 MW- ic3 November-03 3.50E+00 5.26E+00 2.00E+00 1.97E+00 I.OOE+00 4.94E+00 -9.90E-( 03 1.63E-02 5.60E-02 1.10E-01 March-04 -1.30E+00 6.25E+00 2.00E-01 2.14E+00 -1.60E+00 4.28E+00 -5.80E-( 34 9.54E-04 O.OOE+00 1.532-04 March-04 -3.70E+00 5.10E+00 -4.00E-01 2.30E+00 -6.00E01 4.28E+00 -1.90E-t 33 1.81 E-03 1.05E-02 1.45E-02 May-04 2.80E+00 5.10E+00 1.30E+00 1.81E+00 -4.00E-01 5.1 OE+00 9.20E-( 33 1.60E-02 -5.00E-04 8.23E-04 August-04 1.10E+00 5.10E+00 7.00E-01 1.81 E+00 -1.70E+00 4.61 E+00 7.70E-t 03 1.27E-02 -1.39E-03 1.61 E-03 November-04 6.90E+00 6.25E+00 -3.OOE-01 2.30E+00 2.OOE-01 5.92E+00 -1.20E-( 33 1.97E-03 5.70E-03 1.38E-02 August-03 5.60E+00 6.16E+00 -1.30E+00 4.20E+00 1.30E-C31 3.30E-01 O.OOE+00 2.00E-01 November-03 1.60E+00 4.94E+00 5.OOE-01 2.14E+00 -6.50E+00 4.44E+00 -1.80E-( 32 1.81 E-02 1.70E-01 1.81E-01 March-04 7.1 OE+00 4.61 E+00 -3.00E-01 2.14E+00 -1.OOE+00 5.43E+00 -1.47E-C33 1.09E-03 -1.76E-03 1.182-03 May-04 5.90E+00 4.94E+00 1.60E+00 2.30E+00 -4.90E+00 5.76E+00 1.10E-t )2 1.37E-02 7.50E-03 1.40E-02 August-04 3.80E+00 5.76E+00 O.OOE+00 1.81 E+00 -7.50E+00 7.40E+00 -8.60E-t 34 1.OOE-03 -4.30E-04 7.07E-04 November-04 -9.60E+00 8.55E+00 -5.40E-01 1.61 E+00 5.10E+00 6.42E+00 1.50E-C)3 1.02E-02 O.OOE+00 1.65E-04 September-03 5.OOE+00 1.40E+01 -1.OOE+00 3.90E+00 5.50E-C32 3.70E-01 -1.96E-02 2.70E-01 November-03 2.90E+00 4.77E+00 7.OOE-01 1.97E+00 -5.60E+00 5.43E+00 1.24E-t 01 1.45E-01 4.30E-02 1.04E-01 March-04 2.70E+00 4.44E+00 1.20E+00 2.30E+00 7.00E-01 3.95E+00 3.1 OE-( 02 1.81 E-02 6.60E-02 1.09E-01 March-04 O.OOE+00 4.28E+00 1.70E+00 2.30E+00 -5.60E+00 5.59E+00 3.60E-t 02 1.51E-01 -2.70E-02 2.47E-02 May-04 5.20E+00 4.61 E+00 -2.40E+00 1.65E+00 -3.10E+00 4.44E+00 -1.20E-( 33 1.40E-03 2.70E-02 3.13E-02 August-04 O.OOE+00 5.43E+00 O.OOE+O0 1.81E+00 -2.30E+00 4.28E+00 -2.21 E-(33 1.63E-03 O.OOE+00 2.80E-04 November-04 1.30E+00 5.43E+00 -1.40E+00 1.202+00 5.00E+00 5.92E+00 1.17E-t 32 1.37E-02 2.20E-02 1.97E-02 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
C TALc 9 C Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts I Pu-241 Lc Am-241
[MW 104B;§~
November-03 -8.OOE-01 3.45E+00 -1.52E-01 1.07E-01 1.70E-02 2.80E-02 8.OOE-03 2.30E-02 March-04 -6.OOE-01 2.80E+00 -1.1OE-02 2.47E-02 7.70E-03 1.27E-02 O.OOE+00 1.61 E-04 May-04 -1.20E+00 2.15E+00 -3.30E-02 2.15E-02 O.OOE+00 1.23E-04 -9.80E-04 1.15E-03 May-04 -5.OOE-01 2.47E+00 -1.20E-01 2.30E-02 4.30E-03 7.24E-03 O.OOE+00 1.05E-04 August-04 2.70E+00 2.80E+00 -1.90E-02 2.47E-02 O.OOE+00 3.45E-04 O.OOE+00 2.80E-04 November-04 -1.40E+00 2.47E+00 -6.90E-03 1.33E-02 3.60E-02 6.42E-02 -9.60E-04 1.58E-03 November-03 -5.00E-01 1.65E+00 -8.70E-02 1.07E-01 1.60E-02 3.29E-02 -2.80E-03 1.07E-01 March-04 -2.30E+00 2.80E+00 -4.00E-03 2.63E-02 O.OOE+00 1.97E-04 -6.30E-04 1.04E-03 March-04 -2.70E+00 3.1255 -1.80E-02 2.30E-02 1.40E-02 1.81E-02 4.60E-03 1.09E-02 Ba-140 (9.4),1-131 (16.5),
May-04 -9.OOE-01 3.45E+00 -2.50E-02 1.81 E-02 O.OOE+00 1.53E-04 -1.OOE-03 1.17E-03 La-140 (10.8) pCVL August-04 -8.OOE-01 2.14E+00 5.OOE-03 5.10E-02 6.50E-02 6.42E-02 -2.20E-03 3.62E-03 November-04 -2.20E+00 2.63E+00 3.OOE-02 7.73E-02 -9.30E-03 8.88E-03 -2.30E-03 3.78E-03 August-03 6.10E-01 3.20E+00 1.10E-01 3.60E-01 5.OOE-03 1.10E-01 4.OOE-03 8.90E-02 November-03 -1.1 OE+00 3.29E+00 -1.32E-01 1.32E-01 O.OOE+00 5.26E-04 O.OOE+00 4.11E-04 Pb & Bi-214 (8.69 & 24.7 pCi/L)
March-04 4.30E+00 3.78E+00 -1.70E-02 1.81 E-02 O.OOE+00 2.30E-04 O.OOE+00 1.97E-04 May-04 -1.OOE-01 2.96E+00 -2.80E-02 2.15E-02 O.OOE+00 1.25E-04 4.OOE-03 6.58E-03 August-04 -8.OOE-01 1.97E+00 -2.18E-01 1.17E-01 O.OOE+00 5.76E-04 -6.50E-03 1.07E-02 November-04 4.80E-02 6.25E-02 -4.80E-03 3.95E-03 -8.80E-04 1.45E-03 September-03 -2.00E-01 2.80E+00 O.OOE+00 3.90E-01 1.40E-02 1.OOE-01 1.1OE-02 8.60E-02 November-03 1.OOE-01 6.09E+00 -1.74E-01 1.05E-01 1.60E-02 2.63E-02 7.OOE-03 2.14E-02 Pb & Bi-214 (17.9 & 28 pCi/L)
March-04 2.40E+00 2.63E+00 -1.60E-01 1.04E-01 5.20E-02 4.94E-02 O.OOE+00 4.18E-04 March-04 -1.49E+00 1.55E+00 -9.20E-02 1.14E-01 4.80E-02 4.61 E-02 -5.90E-03 9.71 E-03 May-04 -3.30E+00 3.45E+00 -2.60E-02 1.97E-02 3.90E-03 6.42E-03 O.OOE+00 9.54E-05 August-04 -7.OOE-01 2.14E+00 -2.OOE-01 1.32E-01 2.20E-02 3.62E-02 1.OOE-02 2.96E-02 November-04 -1.OOE+00 3.62E+00 2.20E-02 5.92E-02 O.OOE+00 1.22E-03 O.OOE+00 9.21 E-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
( TAC 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts 9wj106A;]K November-04 -3.70E+00 2.96E+00 1.30E+00 2.80E+00 4.OOE-01 2.47E+00 O.OOE+00 2.47E+00 -8.40E+00 7.40E+00 November-04 -3.70E+00 2.40E+00 -3.80E+00 4.44E+00 -5.OOE-01 2.47E+00 -2.70E+00 2.96E+00 O.OOE+00 9.54E+00 November-04 2.60E+00 2.96E+00 -2.50E+00 2.96E+00 -2.70E+00 2.80E+00 -9.OOE-01 2.30E+00 -4.40E+00 7.90E+00 November-04 -2.90E+00 3.62E+00 -4.60E+00 4.61E+00 -1.30E+00 3.13E+00 1.60E+00 3.29E+00 2.00E+00 1.05E+01 November-03 -2.00E-01 1.88E+01 -2.OOE-01 2.14E+00 8.OOE-01 1.81 E+00 -7.OOE-01 1.81E+00 4.80E+00 5.76E+00 March-04 1.10E+00 2.80E+00 -2.00E-01 2.47E+00 -3.60E+00 2.96E+00 -4.00E-01 2.15E+00 6.20E+00 6.58E+00 May-04 -8.002-01 2.30E+00 5.OOE-01 2.80E+00 4.OOE-01 2.30E+00 -1.30E+00 2.15E+00 -4.40E+00 5.43E+00 August-04 1.00E-01 2.63E+00 -1.60E+00 2.96E+00 1.50E+00 1.81E+00 1.20E+00 1.97E+00 -3.30E+00 6.58E+00 November-04 -1.80E+00 2.96E+00 7.00E-01 3.13E+00 8.00E-01 2.47E+00 1.20E+00 2.63E+00 -2.20E+00 7.90E+00 November-03 8.OOE-01 1.81 E+00 -1.80E+00 1.81 E+00 -7.00E-01 1.81E+00 6.OOE-01 1.65E+00 -1.70E+00 5.10E+00 March-04 -2.30E+00 2.15E+00 -2.60E+00 3.78E+00 1.OOE+00 2.80E+00 -9.OOE-01 2.47E+00 -2.90E+00 7.73E+00 May-04 -3.00E-01 1.97E+00 4.00E-01 2.30E+00 1.40E+00 1.97E+00 3.OOE-01 1.81 E+00 -1.60E-01 5.76E+00 August-04 1.00E+00 2.14E+00 8.00E-01 2.14E+00 5.00E-01 1.81E+00 -1.OOE+00 1.97E+00 -5.40E+00 5.59E+00 November-04 5.00E-01 2.63E+00 -2.80E+00 4.11 E+00 -1.80E+00 2.47E+00 -1.40E+00 2.30E+00 -7.00E-01 7.90E+00 MW.-.' 07D,!_^
November-03 -2.80E+00 2.14E+00 -1.10E+00 2.30E+00 -3.00E-01 2.14E+00 5.00E-01 1.97E+00 -6.OOE-01 5.92E+00 March-04 -4.00E-01 1.82E+00 3.00E-01 2.47E+00 -6.OOE-01 2.63E+00 -7.OOE-01 2.47E+00 5.40E+00 7.73E+00 May-04 1.10E+00 2.80E+00 2.30E+00 3.45E+00 -2.00E-01 2.47E+00 -5.00E-01 2.15E+00 -7.00E-01 7.24E+00 August-04 -9.70E-01 9.71 E-01 4.90E-01 1.12E+00 -9.70E-01 8.88E-01 6.50E-01 8.39E-01 2.00E+00 2.80E+00 November-04 2.00E-01 3.29E+00 -2.30E+00 3.45E+00 -1.OOE+00 2.47E+00 3.00E+00 2.80E+00 -8.OOE-01 8.06E+00 September-04 3.00E-01 2.30E+00 2.00E-01 1.97E+00 -4.00E-01 1.65E+00 -4.00E-01 2.14E+00 -6.30E+00 6.25E+00 November-04 3.10E+00 2.63E+00 -4.00E+00 2.63E+00 3.OOE-01 1.97E+00 5.00E-01 1.97E+00 O.OOE+00 6.42E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TAcE 9 C Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Lc November-04 -6.00E-01 2.63E+00 -2.40E+00 2.63E+00 2.OOE+00 6.91E+00 2.30E+00 7.73E+00 1.90E+O( 0 9.38E+00 M11W-i O06Bt~4 November-04 1.50E+00 3.13E+00 -1.80E+00 3.29E+00 6.10E+00 7.24E+00 4.20E+00 4.94E+00 -2.20E+O( 0 9.38E+00 November-04 -2.002-01 3.29E+00 -1.OOE+00 3.13E+00 4.60E+00 7.24E+00 -8.40E+00 9.54E+00 -6.00E-Ol I 1.00E+01
>,06Dj..E November-04 9.OOE-01 2.96E+00 O.OOE+00 3.13E+00 -1.60E+00 8.22E+00 O.OOE+00 6.91E+00 -2.40E+O( ) 9.38E+00 November-03 0.002+00 1.97E+00 -7.70E-01 1.61 E+00 3.80E+00 5.92E+00 6.40E+00 5.26E+00 2.70E+OC0 8.55E+00 March-04 9.00E-01 2.80E+00 3.30E+00 2.63E+00 5.00E-01 6.58E+00 4.30E+00 9.05E+00 1.OOE-Ol I 1.OOE+01 May-04 -3.00E-01 2.47E+00 -1.70E+00 2.47E+00 4.50E+00 4.44E+00 7.30E+00 6.74E+00 -1.29E+O' I 6.42E+00 August-04 -5.00E-01 2.14E+00 -1.90E+00 2.63E+00 -6.00E-01 6.58E+00 O.OOE+00 7.24E+00 -1.20E+O( 0 8.06E+00 November-04 -2.90E+00 3:29E+00 -3.80E+00 2.63E+00 3.90E+00 5.26E+00 -8.40E+00 7.73E+00 -2.70E+O( 0 7.57E+00 November-03 1.10E+00 1.81 E+00 7.00E-01 1.81 E+00 3.80E+00 5.26E+00 2.10E+00 4.77E+00 3.00E-Ol I 7.40E+00 March-04 1.20E+00 2.63E+00 3.00E-01 2.30E+00 1.50E+00 5.26E+00 6.30E+00 9.54E+00 -1.80E+O( 0 8.23E+00 May-04 1.20E+00 1.97E+00 -5.00E-01 2.63E+00 -3.90E+00 6.25E+00 O.OOE+00 6.42E+00 -6.20E+O( ) 9.38E+00 August-04 -2.00E+00 1.65E+00 9.00E-01 2.14E+00 2.70E+00 4.77E+00 9.00E-01 7.07E+00 7.90E+O( ) 7.57E+00 November-04 -9.OOE-01 3.13E+00 5.OOE-01 2.80E+00 8.60E+00 6.42E+00 2.30E+00 6.91E+00 3.10E+O( 0 8.55E+00 November-03 -3.50E+00 2.47E+00 7.00E-01 2.63E+00 5.00E-01 5.26E+00 3.30E+00 7.73E+00 -8.50E+O( ) 8.06E+00 March-04 2.OOE-01 2.80E+00 -1.00E-01 3.29E+00 -2.30E+00 6.09E+00 -2.1 OE+00 6.58E+00 4.80E+O( ) 9.54E+00 May-04 -1.OOE+00. 2.7965 -2.40E+00 2.4675 -0.9 5.0995 5.4 6.909 -1.I 7 7.567 August-04 1.80E-01 1.17E+00 -6.60E-01 9.71 E-01 O.OOE+00 2.30E+00 -1.20E+00 2.63E+00 -2.50E+O( 2 2.96E+00 November-04 -1.OOE+00 3.13E+00 -1.80E+00 3.13E+00 -3.60E+00 6.74E+00 4.70E+00 7.73E+00 -6.50E+0( 2 8.88E+00 September-04 1.70E+00 2.14E+00 -6.00E-01 2.30E+00 -2.00E+00 5.26E+00 4.30E+00 8.55E+00 1.50E+O( 0 8.72E+00 November-04 -1.OOE-01 2.30E+00 -2.OOE-01 2.30E+01 -3.10E+00 5.59E+00 -3.00E-01 8.39E+00 -4.70E+O( 0 8.39E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
( TA(Cc 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts I 9 IZI l I Tritium Lc JGross Alpha Lc I Gross Beta Lc I C-1 4 Lc I Fe-55 Lc I a
November-04 6.20E+02 1.81E+02 1.32E+00 1.35E+00 9.70E+00 1.81 E+00 2.50E+01 3.62E+01 -5.OOE-01 4.94E+00
-ll O6B%¢'6B, November-04 -9.OOE+01 1.65E+02 5.20E-01 1.22E+00 6.90E+00 1.97E+00 4.80E+01 3.45E+01 1.30E+00 5.59E+00 Nov mbe-0 !^,0 506C November-04 5.0OE+01 1.65E+02 1.38E+00 1.41E+00 3.80E+00 1.81 E+00 2.20E+01 2.63E+01 -1.70E+00 5.26E+00 November-04 1.10E+02 1.64E+02 1.73E+00 1.38E+00 5.OOE+00 1.81E+00 7.OOE+00 2.80E+01 -2.50E+00 4.77E+00 November-03 8.00E+01 2.14E+02 2.70E+00 1.81 E+00 1.05E+01 1.81 E+00 2.1 OE+01 2.30E+01 -7.OOE-01 7.24E+00 March-04 1.20E+02 1.60E+02 8.60E+00 2.80E+00 2.35E+01 2.30E+00 9.OOE+00 2.47E+01 1.90E+00 5.43E+00 May-04 O.OOE+00 2.14E+02 1.50E+00 1.97E+00 1.06E+01 2.47E+00 -6.10E+01 3.62E+01 -5.70E+00 4.77E+00 August-04 5.OOE+01 1.81 E+02 2.70E+00 1.65E+00 1.03E+01 2.30E+00 -1.70E+01 3.29E+01 1.20E+00 4.44E+00 November-04 -1.OOE+01 1.65E+02 1.80E-01 1.18E+00 8.30E+00 2.14E+00 -5.OOE+00 3.45E+01 -2.20E+00 5.26E+00 t M W-7 Q:*'i.
November-03 4.58E+04 4.77E+02 -5.1 OE-01 9.87E-01 5.OOE+00 1.41 E+00 1.20E+01 2.30E+01 3.70E+00 4.61 E+00 March-04 8.88E+03 2.63E+02 1.OOE+00 1.81E+00 1.55E+01 2.80E+00 5.30E+01 3.13E+01 2.30E+00 5.43E+00 May-04 3.90E+04 5.26E+02 7.OOE-01 1.65E+00 7.80E+00 2.15E+00 -3.OOE+00 3.78E+01 -1.19E+01 7.24E+00 August-04 4.18E+04 4.77E+02 1.78E+00 1.09E+00 5.70E+00 1.81 E+00 1.40E+01 2.63E+01 2.1 OE+00 4.44E+00 November-04 4.18E+04 4.61 E+02 -7.40E-01 1.07E+00 5.30E+00 1.81 E+00 5.30E+01 4.77E+01 -1.70E+00 1.09E+01 MW-I,-"D November-03 9.71 E+03 2.96E+02 1.23E+00 1.55E+00 1.12E+01 1.81 E+00 3.1OE+01 3.29E+01 4.OOE-01 6.09E+00 March-04 5.94E+03 2.30E+02 8.90E+00 2.63E+00 1.63E+01 2.14E+00 2.70E+01 3.13E+01 6.30E+00 1.30E+01 May-04 1.09E+04 3.29E+02 1.12E+00 1.38E+00 6.30E+00 1.97E+00 -1.70E+01 2.80E+01 -1.14E+01 7.90E+00 August-04 1.26E+04 2.96E+02 1.13E+00 9.38E-01 7.OOE+00 1.97E+00 1.50E+01 2.63E+01 7.OOE-01 4.61 E+00 November-04 1.28E+04 2.96E+02 1.80E+00 1.81 E+00 1.05E+01 2.30E+00 7.OOE+00 2.96E+01 -6.OOE-01 5.92E+00 LMWkl 08A:}
September-04 8.OOE+01 1.81 E+02 9.OOE+00 2.96E+00 2.65E+01 2.96E+00 -1.50E+01 3.62E+01 -1.06E+01 1.12E+01 November-04 -5.OOE+01 1.17E+03 -4.60E-01 1.40E+00 2.16E+01 1.61E+00 8.OOE+00 2.47E+01 -1.OOE+00 1.97E+01 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
( TAC c 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta
(
and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Lc Pu-239/240 Lc November-04 -4.1 OE+00 5.59E+00 -1.80E+00 1.64E+00 1.90E+00 4.44E+00 -1.OOE-( )2 9.54E-03 1.50E-01 1.81E-01 MW--,106BT 0
November-04 2.70E+00 5.43E+00 -2.60E+00 1.81E+00 -1.OOE+00 5.92E+00 -1.10E-( )3 1.81 E-03 7.80E-03 1.28E-02 MW,-,j,,Oi -.
November-04 1.90E+00 5.43E+00 -2.40E+00 1.97E+00 6.40E+00 5.92E+00 O.OOE+( )0 2.47E-04 3.20E-02 2.96E-02 November-04 4.OOE-01 5.43E+00 2.OOE-01 1.97E+00 2.1OE+00 4.77E+00 O.OOE+( )0 1.97E-03 6.70E-02 1.22E-01 November-03 1.20E+00 1.10E+01 -9.OOE-01 1.97E+00 -6.80E+00 5.59E+00 -5.OOE-02 5.92E-02 -5.OOE-02 5.92E-02 March-04 2.60E+00 5.43E+00 1.60E+00 1.97E+00 -2.80E+00 6.42E+00 -1.21 E-03 1.41 E-03 -1.21 E-03 1.41 E-03 May-04 2.OOE-01 5.26E+00 1.70E+00 1.81E+00 9.OOE-01 3.95E+00 1.90E-02 2.63E-02 8.60E-03 9.60E-03 August-04 2.OOE-01 5.76E+00 6.OOE-01 1.97E+00 -4.20E+00 7.07E+00 O.OOE+00 2.96E-04 -9.90E-04 1.16E-03 November-04 2.40E+00 5.43E+00 -1.30E+00 1.81 E+00 2.OOE+00 5.76E+00 -2.OOE-03 2.30E-03 2.80E-02 2.47E-02 z 9 1ZI CE ]
November-03 7.20E+00 1.07E+01 4.OOE-01 1.97E+00 -3.60E+00 4.44E+00 7.70E-02 1.61 E-01 1.80E-01 2.30E-01 March-04 -4.20E+00 7.73E+00 I.OOE+00 2.30E+00 O.OOE+00 5.92E+00 -1.25E-03 1.41 E-03 6.20E-03 1.02E-02 May-04 1.70E+00 5.IOE+00 1.20E+00 1.97E+00 9.OOE-01 3.95E+00 -1.28E-03 1.05E-03 -1.28E-03 1.05E-03 August-04 9.00E-01 5.26E+00 -6.OOE-01 1.81 E+00 5.40E+00 5.43E+00 I.OOE-02 1.65E-02 O.OOE+00 2.47E-04 November-04 -3.30E+00 6.91 E+00 -7.OOE-01 2.14E+00 1.OOE-01 6.74E+00 -2.00E-03 2.30E-03 1.30E-02 1.65E-02 November-03 1.70E+00 7.90E+00 -2.40E+00 1.97E+00 -7.1 OE+00 5.1OE+00 -2.90E-02 2.80E-02 -1.90E-02 2.30E-02 March-04 -6.OOE-01 5.26E+00 1.50E+00 2.14E+00 -1.50E+00 4.61 E+00 4.1 OE-03 9.71 E-03 -2.30E-03 1.97E-03 May-04 1.50E+00 6.09E+00 1.50E+00 1.65E+00 -1.40E+00 4.77E+00 -2.80E-03 2.63E-03 1.OOE-02 2.63E-02 August-04 3.40E+00 5.43E+00 1.1OE+00 1.81 E+00 5.00E-01 6.42E+00 -4.40E-04 7.24E-04 -1.32E-03 1.25E-03 November-04 -9.OOE-01 5.43E+00 -1.80E+00 1.81 E+00 4.20E+00 6.58E+00 O.OOE+00 2.14E-04 1.40E-02 1.81 E-02
,1EA08' September-04 1.90E+00 8.55E+00 9.OOE-01 1.98E+00 -1.30E+00 4.61E+00 7.30E-03 1.32E-02 1.50E-02 1.81E-02 November-04 -1.20E+00 5.10E+00 -1.80E+00 1.97E+00 -3.OOE-01 6.25E+00 1.90E-02 1.81 E-02 1.80E-02 1.81 E-02 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
( TALE 9 C Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts November-04 -3.90E+00 6.58E+00 -7.50E-02 1.05E-01 O.OOE+00 5.26E-04 -1.80E-02 2.96E-02 NMWeier04 November-04 -9.OOE-03 2.63E-02 3.70E-02 6.09E-02 O.OOE+00 8.55E-04 November-04 -- 9.OOE-03 2.63E-02 3.40E-02 5.92E-02 O.OOE+00 8.39E-04 November-04 2.OOE-01 5.76E+00 -1.09E-01 1.28E-01 -2.50E-02 9.05E-02 O.OOE+00 4.41 E-04 November-03 2.79E+00 1.58E+00 -2.00E-02 1.50E-01 1.60E-02 2.63E-02 O.OOE+00 3.62E-04 March-04 -2.00E+00 3.78E+00 -1.60E-02 2.47E-02 O.OOE+00 2.30E-04 O.OOE+00 1.81 E-04.
May-04 4.00E-01 4.44E+00 -6.OOE-03 1.81 E-02 O.OOE+00 5.90E-05 O.OOE+00 5.30E-05 '
August-04 -4.OOE-01 2.14E+00 -1.79E-01 1.18E-01 -2.40E-02 2.30E-02 1.90E-02 3.95E-02 November-04 4.30E-02 6.74E-02 O.OOE+00 1.04E-03 O.OOE+00 8.06E-04 MW- 07,C;,=
November-03 9.20E-01 1.27E+00 -1.00E-02 1.65E-01 -6.70E-03 1.1OE-02 1.50E-02 2.47E-02 March-04 -3.20E+00 2.63E+00 -2.40E-02 1.97E-02 6.50E-03 1.35E-02 -6.60E-04 1.09E-03 May-04 4.OOE+00 2.63E+00 -8.00E-03 1.65E-02 9.70E-03 1.OOE-02 O.OOE+00 5.30E-05 August-04 -2.OOE+00 3.45E+00 -1.92E-01 1.12E-01 O.OOE+00 5.43E-04 -6.30E-03 1.04E-02 November-04 1.90E-02 5.43E-02 3.70E-02 6.09E-02 2.90E-02 4.77E-02 November-03 6.30E-01 1.43E+00 -8.00E-02 1.30E-01 9.OOE-03 2.47E-02 1.20E-02 1.97E-02 March-04 -1.50E+00 2.80E+00 -2.50E-02 1.97E-02 -7.50E-04 1.23E-03 -6.10E-04 1.OOE-03 Zr-95(6.6)
May-04 5.60E+00 4.77E+00 -1.95E-02 1.17E-02 O.OOE+00 5.20E-05 O.OOE+00 4.70E-05 August-04 -2.30E+00 2.30E+00 -1.85E-01 1.23E-01 O.OOE+00 5.76E-04 O.OOE+00 4.44E-04 November-04 -1.1 OE-02 2.63E-02 -3.40E-03 3.29E-03 -9.OOE-04 1.48E-03 tMW -i08Affi;-
September-04 -1.80E+00 2.14E+00 2.OOE-03 2.63E-02 -3.40E-03 5.59E-03 4.20E-03 1.22E-02 November-04 6.30E-02 7.24E-02 -2.70E-03 2.63E-03 O.OOE+00 7.57E-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
( TA( . 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts M -n-04 September-04 -1.1 OE+O0 2.47E+00 -7.OOE-01 2.47E+00 -1.20E+00 1.97E+00 2.50E+00 2.14E+00 -2.40E+00 6.25E+O0 November-04 2.30E+00 2.80E+00 -3.OOE+00 2.63E+00 2.60E+00 2.14E+00 7.OOE-01 2.30E+00 3.60E+00 5.92E+00 November-04 -1.90E+00 1.97E+00 2.OOE-01 2.30E+00 -7.OOE-01 1.65E+00 -1.IOE+00 1.65E+00 4.OOE-01 5.43E+00 September-04 1.90E+00 2.63E+00 2.90E+00 3.29E+00 6.OOE-01 2.14E+00 -1.40E+00 2.47E+00 -7.OOE-01 7.24E+0O November-04 3.00E-01 2.96E+00 3.20E+00 3.78E+00 -1.30E+0O 2.47E+00 -2.OOE-01 2.47E+00 -2.30E+00 6.74E+00 M W-I09, September-04 9.OOE-01 2.63E+00 -2.IOE+00 2.80E+00 -4.40E+00 2.63E+00 2.OOE-01 2.47E+00 2.30E+0O 6.58E+00 November-04 1.20E+0O 2.30E+00 9.OOE-01 2.30E+00 -3.60E+00 2.30E+00 -1.40E+00 2.14E+00 -4.90E+00 6.58E+00 September-04 2.80E+00 2.96E+00 3.20E+00 3.29E+00 2.20E+0O 2.63E+00 7.OOE-01 1.97E+00 3.80E+00 7.07E+00 November-04 -3.20E+00 2.47E+00 -1.1OE+O0 1.97E+00 -1.50E+00 2.63E+00 O.OOE+00 2.14E+00 8.30E+00 7.57E+0O September-04 -2.40E+00 2.80E+00 -1.OOE+00 3.29E+00 7.OOE-01 2.30E+00 -1.1OE+00 2.47E+00 9.90E+00 7.40E+O0 November-04 4.00E-01 3.13E+00 -9.OOE-01 2.96E+00 -1.30E+0O 2.80E+00 -2.30E+00 2.30E+00 -4.80E+00 6.25E+00 pCF - >-s August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TALCE9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Lc I Eu-1 55 Lc September-04 -9.OOE-01 2.30E+00 1.30E+00 2.30E+00 -7.OOE-01 6.09E+00 2.OOE+00 6.58E+00 1.15E+01 9.87E+00 November-04 3.OOE-01 2.96E+00 2.80E+00 2.14E+00 -3.OOE+00 4.61E+00 4.1OE+00 5.43E+00 3.OOE+00 7.90E+00 November-04 -7.00E-01 2.30E+00 8.OOE-01 1.97E+00 -1.80E+00 5.26E+00 -5.OOE+00 6.09E+00 -1.OOE+00 7.73E+00 M, 10,8,C.'*
September-04 9.00E-01 2.80E+00 6.OOE-01 2.63E+00 1.OOE-01 5.26E+00 6.60E+00 8.06E+00 1.10E+00 8.23E+00 November-04 3.30E+00 3.13E+00 -3.OOE-01 2.47E+00 3.80E+00 6.74E+00 -3.10E+00 7.24E+00 -4.70E+00 7.73E+00 September-04 2.OOE+00 2.80E+00 1.50E+00 2.47E+00 4.OOE+00 6.42E+00 1.60E+00 1.07E+01 -6.OOE+00 8.23E+00 November-04 7.OOE-01 2.14E+00 -2.10E+00 2.30E+00 1.30E+00 5.26E+00 3.10E+00 7.24E+00 -5.OOE-01 7.73E+00 September-04 -8.OOE-01 2.80E+00 -2.20E+00 2.96E+00 6.20E+00 5.43E+00 -1.IOE+00 9.21E+00 7.70E+00 8.23E+00 November-04 1.OOE+00 3.13E+00 1.OOE-01 2.63E+00 2.OOE+00 6.91E+00 -8.OOE-01 6.74E+00 3.90E+00 9.87E+00 September-04 -1.70E+00 3.45E+00 -8.00E-01 2.47E+00 -5.20E+00 6.58E+00 -3.40E+00 8.72E+00 -3.50E+00 8.23E+00 November-04 2.OOE+00 2.96E+00 -1.OOE+00 2.47E+00 2.10E+00 5.10E+00 -2.70E+00 9.38E+00 3.40E+00 7.90E+00 August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TAtLE 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts September-04 -4.00E+01 1.81E+02 5.00E-01 8.39E-01 9.00E+00 2.14E+00 -3.00E+01 5.59E+01 -1.10E+01 2.14E+01 November-04 -4.00E+01 1.65E+02 -4.60E-01 1.40E+00 8.80E+00 2.14E+00 2.40E+01 3.95E+01 -1.60E+00 5.59E+00 November-04 -8.00E+01 1.65E+02 1.39E+00 1.35E+00 8.30E+00 2.14E+00 1.80E+01 2.80E+01 3.70E+00 5.59E+00
~lMV3:
September-04 9.OOE+0O 1.81E+02 1.91E+00 1.32E+00 8.70E+00 2.14E+00 -2.10E+01 2.96E+01 2.20E+00 5.59E+00 November-04 -4.00E+01 1.65E+02 -7.00E-02 1.41 E+00 7.30E+00 2.14E+00 1.60E+01 3.13E+01 -4.40E+00 5.92E+00 September-04 -2.40E+02 1.81 E+02 3.06E+00 1.15E+00 9.40E+00 1.81E+00 -3.60E+01 3.45E+01 -1.80E+00 4.94E+00 November-04 5.002+01 1.65E+02 4.30E+00 1.97E+00 1.02E+01 2.30E+00 2.00E+01 4.11 E+01 -1.63E+01 1.23E+01 iM - - 9Ci~
September-04 1.00E+01 1.81 E+02 8.OOE-01 8.06E-01 5.60E+00 1.81E+00 -6.20E+01 3.45E+01 2.50E+00 5.1 OE+00 November-04 1.40E+02 1.65E+02 8.50E-01 9.05E-01 3.28E+00 1.63E+00 -2.50E+01 2.80E+01 -3.20E+00 4.44E+00 lMwt109D;]
September-04 O.OOE+00 1.81 E+02 1.73E+00 1.28E+00 4.60E+00 1.81E+00 9.20E+01 4.44E+01 -4.60E+00 5.10E+00 November-04 1.40E+02 1.65E+02 1.19E+00 1.22E+00 3.80E+00 1.81E+00 2.40E+01 3.62E+01 .-7.20E+00 4.61E+00 C W-Et w.
August-03 9.OOE+01 2.40E+02 5.10E-01 9.54E-01 2.97E+00 1.58E+00 November-03 2.66E+02 1.57E+02 1.97E+00 1.35E+00 3.20E-01 1.56E+00 March-04 -8.OOE+01 1.65E+02 1.34E+00 9.87E-01 2.94E+00 1.53E+00 May-04 1.50E+02 1.97E+02 1.22E+00 9.87E-01 3.34E+00 1.61 E+00 August-04 -3.OOE+01 1.81 E+02 -4.00E-02 4.94E-01 4.20E+00 1.65E+00 November-04 -5.00E+01 1.65E+02 1.19E+00 7.24E-01 1.35E+00 1.09E+00 August-03 1.OOE+01 3.60E+02 8.40E-01 1.20E+00 7.37E+00 1.98E+00 November-03 1.06E+02 1.55E+02 4.50E-01 1.15E+00 3.10E+00 1.97E+00 March-04 O.OOE+00 1.65E+02 1.09E+00 1.12E+00 3.03E+01 3.29E+00 May-04 O.OOE+00 1.97E+02 1.61 E+00 1.32E+00 4.90E+00 1.81 E+00 August-04 -1.OOE+02 1.81E+02 2.40E-01 7.40E-01 4.90E+00 1.81 E+00 November-04 3.00E+01 1.64E+02 1.65E+00 9.38E-01 2.97E+00 1.32E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TA( c 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts pe 4V0an l Ni-63 Lc I Sr-90 Lc I Tc-99 Lc I Pu-238 Lc iPu-239/240 Lc flAVA8B'_I September-04 4.00E-01 5.1 OE+00 5.OOE-01 1.97E+00 4.OOE-01 5.43E+00 3.90E-02 4.28E-02 I.OOE-02 2.47E-02 November-04 3.40E+00 5.76E+00 -1.30E+00 1.97E+00 5.20E+00 5.92E+00 -5.40E-03 3.95E-03 7.80E-03 1.28E-02 November-04 -3.20E+00 5.26E+00 -1.90E+00 1.97E+00 2.1 OE+00 5.43E+00 O.OOE+00 3.13E-04 -1.80E-03 2.14E-03 September-04 3.OOE+00 5.59E+00 5.OOE-01 1.81 E+00 -9.OOE-01 4.11 E+00 -1.1OE-03 1.81E-03 2.10E-02 2.80E-02 November-04 -2.50E+00 5.10E+00 -7.OOE-01 1.97E+00 4.10E+00 6.09E+00 -3.30E-03 5.43E-03 2.OOE-02 2.30E-02 Dl September-04 1.60E+00 4.94E+00 -4.OOE-01 1.81E+00 -9.OOE-01 4.11 E+00 O.OOE+00 2.14E-04 -2.30E-03 2.14E-03 November-04 1.20E+00 5.76E+00 -7.OOE-01 1.81E+00 2.40E+00 4.44E+00 -1.OOE-03 2.47E-02 -7.70E-03 6.25E-03 September-04 9.OOE-01 5.26E+00 -5.OOE-01 1.81E+00 O.OOE+0O 5.10E+00 O.OOE+00 2.14E-04 -2.30E-03 2.14E-03 November-04 -5.60E+00 4.61 E+00 9.70E-01 1.35E+00 1.OOE+00 3.95E+00 -1.87E-02 1.38E-02 O.OOE+00 2.30E-03 September-04 -8.OOE-01 5.43E+00 -5.OOE-01 1.81E+00 -1.30E+00 3.45E+00 7.OOE-03 1.27E-02 7.OOE-03 1.27E-02 November-04 6.00E-01 5.92E+00 -1.OOE-01 1.97E+00 2.60E+00 4.11E+00 O.OOE+00 2.14E-03 2.40E-01 2.30E-01 August-03 November-03 March-04 May-04 August-04 November-04 IC, 9771,;
August-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
r I C
( TA__E 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts
- MW-08j:
September-04 -1.50E+00 4.77E+00 -2.42E-02 1.48E-02 -1.00E-03 1.65E-03 O.OOE+00 1.02E-04 November-04 7.10E-02 8.06E-02 3.40E-02 5.59E-02 2.70E-02 4.44E-02 November-04 1.60E-02 5.59E-02 O.OOE+00 1.09E-03 -1.80E-03 2.14E-03 L1W708c;R September-04 1.50E+00 4. 1E+00 -2.10E-02 2.96E+00 -8.OOE-03 9.21E-03 -1.23E-02 1.02E-02 November-04 2.OOE-02 5.92E-02 -1.20E-03 1.97E-02 -9.60E-04 1.60E-03 September-04 -2.OOE-01 2.63E+00 -6.OOE-03 3.13E-02 O.OOE+00 3.62E-04 7.OOE-03 2.14E-02 November-04 3.OOE-01 2.30E+00 -1.23E-01 7.40E-02 -2.80E-03 4.61 E-03 -2.50E-03 4.11E-03 September-04 -1.30E+00 2.30E+00 -2.60E-02 3.29E+00 2.20E-02 3.62E-02 -7.10E-03 1.17E-02 November-04 1.OOE+00 6.58E+00 -1.06E-01 8.55E-02 O.OOE+00 5.1OE-04 -2.50E-03 4.11E-03 September-04 -4.00E-01 2.14E+00 -1.70E-02 2.96E-02 O.OOE+00 3.13E-04 O.OOE+00 2.30E-04 November-04 -5.60E+00 5.92E+00 -1.05E-01 1.OOE-01 -4.1OE-03 6.74E-03 -7.20E-03 8.39E-03 i 171 August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
(I/ T _=99 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Mn5 c Co-60 Lc =9 _Lc Ag-108m Lc Sb15 L August-03 August-03 November-03 March-04 May-04 August-04 November-04 ICQ August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-o0-010-05
( , TAC -9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts August-03 August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 JCFW,6 August-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TALE 9 Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Wee Tr-tiuross Alpha Lc Gross Beta Lc C-14 Lc Fe-55 Lc
[CFWV3o: :
August-03 5.OOE+01 2.40E+02 1.80E+00 1.81E+00 6.20E+00 1.61 E+00 August-03 -1.20E+02 2.60E+02 8.OOE-01 1.81 E+00 6.44E+00 1.60E+00 1.50E+01 5.40E+01 3.08E+01 1.74E+01 November-03 1.50E+02 1.63E+02 1.93E+00 1.45E+00 9.68E+00 1.58E+00 March-04 8.00E+01 1.81E+02 -4.80E-01 1.17E+00 1.01E+01 2.30E+00 May-04 -2.30E+02 1.97E+02 3.90E+00 2.15E+00 8.40E+00 2.15E+00 August-04 2.90E+02 1.81E+02 1.39E+01 2.80E+00 2.11E+01 1.81E+00 November-04 1.1 OE+02 1.64E+02 1.53E+01 3.13E+00 1.66E+01 2.47E+00 LCEI August-03 -1.30E+02 2.60E+02 2.70E+00 2.14E+00 6.70E+00 1.97E+00 November-03 1.08E+02 1.59E+02 2.50E+00 1.81 E+00 8.80E+00 2.47E+00 March-04 1.60E+02 1.81 E+02 2.14E+00 1.43E+00 5.30E+00 1.97E+00 May-04 -3.80E+02 1.97E+02 1.61E+00 1.15E+00 9.20E+00 1.81E+00 August-04 2.OOE+02 1.81E+02 1.29E+00 1.48E+00 1.30E+01 2.47E+00 November-04 5.OOE+01 1.65E+02 2.24E+00 1.07E+00 8.OOE+00 1.65E+00 August-03 7.OOE+01 2.60E+02 7.90E-01 1.41 E+00 4.80E+00 1.81E+00 November-03 1.33E+02 1.56E+02 2.20E+00 1.81E+00 5.20E+00 2.14E+00 March-04 1.OOE+02 1.81 E+02 1.56E+00 1.32E+00 1.91 E+01 2.63E+00 May-04 -4.30E+02 1.97E+02 2.01 E+00 1.35E+00 4.80E+00 1.81 E+00 August-04 -3.OOE+01 1.81 E+02 7.90E-01 1.05E+00 7.20E+00 1.97E+00 November-04 1.60E+02 1.65E+02 1.51 E+00 1.18E+00 2.67E+00 1.55E+00 August-03 6.00E+01 2.40E+02 8.OOE-01 1.65E+00 4.70E+00 1.97E+00 November-03 7.90E+01 1.55E+02 -3.70E-01 8.06E-01 2.30E+00 1.81 E+00 March-04 8.OOE+01 1.81 E+02 1.37E+00 1.30E+00 7.20E+00 1.97E+00 May-04 -3.50E+02 1.97E+02 2.20E-01 8.88E-01 3.40E+00 1.65E+00 August-04 -2.30E+02 1.81E+02 1.13E+00 1.12E+00 5.OOE+00 1.81E+00 November-04 -3.OOE+01 1.65E+02 1.61 E+00 1.33E+00 3.88E+00 1.48E+00 The Critical Level, Lc, Is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TALE 9 c Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Ni-63 Lc- sr-go c Tc-99 Lc lPu-238 Pu-239/240 Lc August-03 August-03 6.OOE-01 5.10E+00 2.20E+00 2.60E+00 -1.06E-02 1.50E-02 -1.59E-02 1.84E-02 3.80E+00 2.47E+00 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TAL9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts aBoom LcAm-241 Lc ECm-242 Lc lCm-243/4 Lc August-03 August-03 -1.93E-01 1.78E-01 1.30E-02 4.40E-02 O.OOE+00 5.40E-04 Pb-214 =52.1, Bi-214=76.5 pCi/L November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 August-04 November-04 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TAL 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts e S,,,an ll*,;,l, Saii Dae eWAN=
- , ,r2<1 I'"".la I Mn-54 Lc _ Co-60 Lc I Nb-94 Lc I Ag-108m Lc I Sb-125 Lc I August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 No Sample Collected March-04 May-04 1.50E+00 2.47E+00 -1.30E+00 3.13E+00 -2.OOE-01 1.81E+00 -5.00E-01 2.15E+00 O.OOE+00 6.42E+00 August-04 November-04 No Sample Collected rDVV;00iA%
August-03 -6.00E-01 7.00E+00 1.40E+00 6.10E+00 -2.00E-01 6.00E+00 -1.90E+00 5.50E+00 7.00E-01 1.50E+01 November-03 No Sample Collected March-04 -1.OOE-01. 2.80E+00 1.90E+00 2.80E+00 -1.60E+00 2.63E+00 -9.OOE-01 2.47E+00 -7.00E-01 6.42E+00 May 2.80E+00 2.30E+00 3.00E-01 2.47E+00 -4.00E-01 2.47E+00 1.80E+00 2.15E+00 -2.40E+00 6.74E+00 August-04 8.OOE-01 2.47E+00 -4.00E-01 3.13E+00 -2.00E-01 2.47E+00 O.OOE+00 1.97E+00 3.60E+00 7.40E+00 November-04 --1.80E+00 2.96E+00 9.00E-01 2.30E+00 -1.00E-01 2.14E+00 2.00E-01 2.30E+00 -2.20E+00 6.58E+00 Sulouse March-04 May-04 -2.50E+00 2.30E+00 1.30E+00 2.14E+00 -2.OOE-01 1.81 E+00 -2.00E-01 2.15E+00 -5.20E+00 6.74E+00 August-04 --1.40E+00 2.96E+00 3.00E-01 2.47E+00 1.80E+00 2.47E+00 -1.10E+00 1.65E+00 2.10E+00 6.74E+00 November-04 3.OOE-01 3.29E+00 -2.90E+00 3.78E+00 -6.OOE-01 2.80E+00 1.30E+00 2.47E+00 -3.20E+00 6.74E+00 November-04 -2.00E+00 2.14E+00 1.50E+00 2.63E+00 -5.00E-01 1.97E+00 6.00E-01 1.81E+00 6.00E-01 5.43E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TAC -9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 1.10E+00 2.96E+00 5.OOE-01 1.97E+00 -3.20E+00 5.43E+00 5.40E+00 8.23E+00 1.80E+00 7.07E+00 August-04 November-04 l?!'t-.;6Suppl August-03 -2.30E+00 6.30E+00 0.OOE+00 5.50E+00 3.10E+00 1.IOE+01 6.60E+00 1.60E+01 -3.50E+00 1.60E+01 November-03 March-04 -8.OOE-01 3.45E+00 1.40E+00 2.63E+00 -2.20E+00 4.94E+00 4.OOE-01 9.05E+00 3.OOE+00 8.23E+00 May-04 8.00E-01 2.80E+00 -9.OOE-01 2.63E+00 -4.1OE+00 7.73E+00 -7.00E+00 6.42E+00 1.17E+01 1.05E+01 August-04 -7.OOE-01 2.63E+00 -1.10E+00 2.14E+00 4.90E+00 6.09E+00 -5.70E+00 9.05E+00 -5.90E+00 8.39E+00 November-04 7.OOE-01 3.13E+00 -1.OOE+00 2.63E+00 1.70E+00 4.94E+00 -1.40E+00 1.OOE+01 1.15E+01 8.55E+00 t u,Hotn,,usf March-04 May-04 1.30E+00 2.15E+00 -1.SOE+00 2.47E+00 -1.30E+00 6.25E+00 1.60E+00 5.92E+00 8.OOE+00 1.OOE+01 August-04 -4.OOE-01 2.63E+00 -1.70E+00 2.30E+00 2.90E+00 6.09E+00 -2.1 OE+00 7.07E+00 -5.70E+00 8.72E+00 November-04 1.30E+00 2.80E+00 -1.60E+00 3.29E+00 -1.60E+00 6.74E+00 -5.80E+00 7.57E+00 9.20E+00 9.54E+00 November-04 -1.OOE+00 2.80E+00 -1.20E+00 1.81 E+00 -3.70E+00 6.25E+00 -5.80E+00 7.24E+00 -7.70E+00 9.21 E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TAC` 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts
-1.OOE+02 2.40E+02 1.73E+00 1.79E+00 7.57E+00 1.97E+00 1.46E+02 1.56E+02 1.70E+00 1.65E+00 2.60E+00 1.81 E+00 March-04 5.OOE+01 1.81E+02 -9.OOE-02 5.92E-01 5.20E+00 1.81E+00 May-04 -3.20E+02 1.97E+02 1.11E+00 1.05E+00 3.70E+00 1.65E+00 August-04 O.OOE+00 1.81 E+02 5.70E-01 1.OOE+00 5.30E+00 1.81 E+00 November-04 1.60E+02 1.64E+02 6.OOE-01 9.38E-01 6.90E+00 1.97E+00 August-03 3.00E+01 2.60E+02 7.OOE-01 1.65E+00 7.50E+00 2.14E+00 November-03 March-04 1.60E+02 1.81 E+02 -4.OOE-02 7.90E-01 4.OOE+00 1.65E+00 May-04 -4.OOE+02 1.97E+02 6.90E-01 1.15E+00 7.20E+00 1.97E+00 -1.10E+00 3.62E+01 1.90E+01 7.24E+01 August-04 O.OOE+00 1.56E+02 8.30E-01 9.71 E-0 1 5.40E+00 1.81 E+00 November-04 August-03 5.OOE+01 3.60E+02 4.50E-01 9.60E-01 3.89E+00 1.38E+00 -3.OOE+00 2.60E+01 1.OOE-01 5.60E+00 November-03 March-04 1.30E+02 1.81 E+02 -7.OOE-02 7.24E-01 2.88E+00 1.56E+00 2.70E+01 2.80E+01 1.40E+00 4.44E+00 May-04 -1.1 OE+02 1.97E+02 1.28E+00 1.05E+00 6.20E+00 1.81 E+00 2.50E+01 4.94E+01 -1.OOE+00 4.77E+00 August-04 -3.OOE+01 1.81E+02 1.90E-01 5.76E-01 3.45E+00 1.60E+00 -3.60E+01 4.11 E+01 2.80E+00 5.26E+00 November-04 -1.IOE+02 1.65E+02 -6.90E-01 5.26E-01 3.27E+00 1.60E+00 -2.80E+01 5.1 OE+01 -2.60E+00 5.26E+00 March-04 1.30E+02 1.81 E+02 1.42E+00 1.27E+00 1.53E+01 2.47E+00 May-04 -1.40E+02 1.97E+02 1.73E+00 1.23E+00 5.20E+00 1.81 E+00 -2.70E+01 3.29E+01 -1.10E+00 4.44E+00 August-04 -8.OOE+01 1.81E+02 1.89E+0O 1.20E+00 5.80E+00 1.81 E+00 -9.OOE+00 4.77E+01 -6.OOE-01 4.61 E+00 November-04 -3.OOE+01 1.65E+02 2.20E-01 1.07E+00 4.70E+00 2.OOE+00 3.40E+01 4.28E+01 5.OOE-01 4.77E+00 November-04 -5.OOE+01 1.65E+02 1.01 E+00 1.37E+00 6.50E+00 1.97E+00 -2.40E+01 3.29E+01 -3.40E+00 4.94E+00 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
( TAQC 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Lc iPu-239/240 Lc August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 7.70E+00 6.58E+00 -2.00E-01 1.65E+00 -8.00E-01 5.26E+00 6.40E-03 1.43E-02 -2.30E-03 1.97E-03 August-04 November-04 liantt Suppl August-03 6.OOE-01 4.60E+00 1.60E+00 5.43E+00 -7.40E+00 2.20E+00 -5.30E-03 1.06E-02 -1.59E-02 1.84E-02 November-03 March-04 -4.00E-01 5.10E+00 1.60E+00 1.97E+00 -1.90E+00 5.10E+00 May-04 9.00E-01 4.77E+00 2.40E+00 2.15E+00 -7.00E-01 4.28E+00 1.80E-03 9.05E-03 4.50E-03 8.88E-03 August-04 -1.70E+00 4.94E+00 1.OOE-01 1.81E+00 -7.00E-01 6.42E+00 O.OOE+00 1.81 E-04 -1.62E-03 1.55E-03 November-04 -4.10E+00 5.92E+00 -1.OOE-01 1.97E+00 4.30E+00 4.44E+00 4.80E-03 1.17E-02 -1.OOE-03 1.65E-03 March-04 May-04 -2.30E+00 4.94E+00 1.30E+00 2.30EO00 -2.00E+00 4.28E+00 5.00E-03 1.64E-02 -2.00E-03 1.48E-02 August-04 -3.70E+00 4.77E+00 5.00E-01 1.81 E+00 -5.00E+00 5.26E+00 1.40E-02 2.30E-02 -1.20E-03 1.97E-03 November-04 1.10E+00 5.43E+00 -1.80E+00 2.14E+00 -1.50E+00 6.25E+00 3.40E-03 1.05E-02 -9.40E-04 1.55E-03 November-04 -3.1 OE+00 6.42E+00 5.00E-01 1.97E+00 1.50E+00 5.92E+00 7.30E-03 1.20E-02 -2.20E-03 2.63E-03 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
(: TALC 9 (.,
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts cFw m. ,.-,,,.
August-03 November-03 March-04 May-04 August-04 November-04 August-03 November-03 March-04 May-04 -4.OOE-01 3.29E+00 -4.20E-02 3.13E-02 8.80E-03 1.45E-02 0.OOE+00 1.97E-04 August-04 November-04 August-03 2.60E+00 3.OOE+00 7.OOE-02 2.OOE-01 O.OOE+O0 5.60E-04 O.OOE+00 5.OOE-04 Pb-210 and Pb/Bi-214 are < Lc November-03 March-04 Ce-141 (5.1)
May-04 - 5.80E+00 5.1 OE+00 -2.50E-02 1.97E-02 -1.50E-04 2.47E-04 -1.30E-04 2.15E-04 August-04 - 2.20E+O0 1.65E+00 -2.30E-02 2.63E-02 1.50E-02 2.47E-02 -1.91 E-02 1.58E-02 November-04 I.OOE+00 2.47E+00 -2.00E-03 3.78E-02 4.70E-02 6.58E-02 1.90E-02 3.45E-02 IFurnonT1!HousVi March-04 May-04 -1.30E+00 4.28E+00 -2.50E-02 1.97E-02 1.50E-04 2.47E-04 -1.30E-04 2.14E-04 August-04 1.30E+00 3.95E+00 4.30E-02 6.58E-02 2.50E-02 4.11E-02 O.OOE+00 4.77E-04 November-04 1.05E+00 1.48E+00 -9.OOE-03 4.11E-02 6.90E-02 8.88E-02 1.50E-02 3.95E-02 November-04 5.OOE-01 2.14E+00 1.30E-02 2.39E-02 -2.50E-03 2.30E-03 -6.20E-04 1.02E-03 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TAC _ 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts
~"t. "!7F t Su t 1pa _ _ _ _ _ _ _ _ _
I Mn-54 Lc I Co-60 Lc I Nb-94 Lc I Ag-108m Lc I Sb-125 Lc I I
August-03 November-03 March-04 May-04 -1.20E+0O 1.97E+00 2.90E+00 2.47E+00 -5.60E-01 1.61 E+00 1.OOE+00 1.81 E+00 -2.50E+00 5.76E+00 September-04 -1.30E+00 2.47E+00 -1.OOE-01 1.97E+00 -3.OOE-01 2.30E+00 O.OOE+00 2.47E+00 -4.20E+00 8.72E+00 November-04 7.00E-01 1.81E+00 1.OOE+O0 2.30E+00 8.OOE-01 2.14E+01 -6.OOE-01 1.97E+O0 4.OOE-01 6.58E+00 Sep-03 -7.40E-01 3.40E+00 -1.OOE+00 4.20E+00 -5.20E-01 2.80E+00 -3.60E-01 3.50E+00 2.40E+OO 8.80E+00 Well Abandoned Fall 2003 USGenM -,3 Sep-03 O.OOE+00 5.60E+00 9.OOE-01 3.80E+00 3.OOE-01 4.20E+00 4.OOE-01 5.20E+00 -3.50E+00 1.50E+01 Well Abandoned Fall 2003 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TA( .9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts Cs-1 34 Lc August-03 November-03 March-04 May-04 4.OOE-01 2.15E+00 -2.OOE+00 I1.65E+00 -5.40E+00 5.26E+00 3.60E+00 5.59E+00 -4,8OE+0 0 7.57E+00 September-04 1.OOE+00 3.13E+00 I1.80E+00 2.80E+00 4.40E+00 7.24E+00 3.60E+00 8.72E+00 6.30E+0 0 1.04E+01 November-04 O.OOE+00 1.81 E+00 2.OOE-01 2.63E+00 -7.60E+00 5.92E+00 3.50E+00 5.43E+00 -2.60E40 0 9.38E+00 SGen'M Sep-03 2.10E+00 1.65E+00 -6.80E-01 3.30E+00 2.10E+00 8.40E+00 -1.40E+00 1.IOE+01 2.20E+0 0 1.30E+01 EUIs-3 Sep-03 3.OOE-01 5.20E+00 -5.OOE-01 6.10E+00 -2.70E+00 1.30E+01 -9.30E+00 2.30E+01 6.90E+00 1.80E+01 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TAL 1 . 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts I..- -- --"-"--.,.-,,..'-- -, _:'. . - , _1-1_4 II AI-[ 1, IF% I---, - - -.-
qP410'- toN, I . -_Q W,
-1 , I1.. --'PE , `_,." 0.
OW-7' q*O .q.14 WOO ;,i-I Tritium Lc IGross Alpha Lc I Gross Beta Lc 1 C-14 Lc I Fe-55 Lc I I
Shema,;f LSg1(SpS1)2 August-03 1.1OE+02 3.50E+02 -3.70E+00 1.84E+00 9.98E+00 1.86E+00 November-03 9.OOE+01 1.84E+02 -2.60E-01 1.48E+00 6.30E+00 1.65E+00 March-04 2.1 OE+02 1.81 E+02 2.1 OE+00 1.97E+00 5.70E+00 2.14E+00 May-04 8.90E+02 2.15E+00 -3.20E-01 1.02E+00 7.80E+00 2.15E+00 1.10E+01 3.95E+01 6.OOE-01 4.44E+00 September-04 1.50E+02 1.81 E+02 7.50E-01 1.04E+00 7.90E+00 1.97E+00 -4.OOE+01 4.77E+01 3.60E+00 5.10E+00 November-04 3.23E+02 1.41 E+02 -2.90E+00 1.12E+00 4.50E+00 1.81 E+00 2.40E+01 3.95E+01 -3.50E+00 5.I OE+00 Sep-03 7.OOE+02 3.70E+02 2.80E+00 3.50E+00 1.08E+01 2.30E+00 -4.60E+01 7.70E+01 -7.90E+00 3.10E+01 USGeMq -32 Sep-03 -2.00E+01 3.80E+02 1.75E+01 4.50E+00 2.39E+01 3.20E+00 -1.40E+01 6.40E+01 -1.46E+01 3.30E+01 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TAL` 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts
~~flr p le ,Date i, ~~ t X___
I" _
_ ___ ____IS_ _____
Ni-63 Lc I Sr-90 Lc I Tc-99 Lc I Pu-238 Lc l_Pu-239/240 Lc August-03 November-03 March-04 May-04 O.OOE+00 4. 1E+0O 1.90E+00 1.97E+0O -1.40E+00 5.59E+O0 -1.22E-03 1.43E-03 7.OOE-03 1.97E-02 September-04 -3.60E+00 5.43E+00 2.OOE-01 1.65E+00 7.OOE-01 4.11 E+00 1.40E-02 2.47E-02 5.OOE-03 1.25E-02 November-04 -1.OOE+00 5.92E+00 -1.40E+00 1.81E+00 7.OOE-01 6.09E+00 -4.20E-03 3.95E-03 9.OOE-04 1.61 E-02
[QiSŽM rW:29 Sep-03 -2.40E+00 9.20E+00 -2.30E+00 4.10E+00 1.40E-01 3.70E-01 9.80E-02 3.20E-01 LSSG 'MW+ 3 Sep-03 O.OOE+00 8.70E+00 -2.90E+00 3.90E+00 2.60E-01 2.47E-01 9.OOE-03 2.60E-01 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-010-05
( TA-L- 9 (
Summary of Quarterly Concentrations of Gamma-Emitting, Tritium, Gross Alpha, Gross Beta and Hard-to-Detect Radionuclides in Ground Water (pCi/L)
Yankee Nuclear Power Station Rowe, Massachusetts 1Well., D;1?an I i'Pu August-03 November-03 March-04 May-04 -2.1OE+00 5.59E+00 -2.OOE-02 1.97E-02 O.OOE+00 1.55E-04 O.OOE+00 1.37E-04 September-04 -5.C )OE-01 2.14E+00 -2.1OE-02 3.13E-02 5.OOE-02 5.92E-02 O.OOE+00 4.61 E-04 November-04 2.6 OE+00 3.62E+00 -7.60E-03 1.02E-02 1.90E-02 3.62E-02 -1.1 OE-03 1.28E-03 Sep-03 2.02E+00 1.40E+00 -5.OOE-02 3.90E-01 4.IOE-02 5.50E-02 -1.18E-02 9.90E-02 Sep-03 -1.4OE+00 4.20E+00 -5.00E-02 4.10E-01 2.80E-02 1.30E-01 -6.OOE-03 8.80E-02 The Critical Level, Lc, is 1.645 times the standard deviation of the total counts.
YA-REPT-00-01 0-05
Table 10 Summary of Unplanned Releases of Radioactive Material at YNPS Yankee Nuclear Power Station Rowe, Massachusetts The following is a chronological summary of events that have occurred in the yard area inside the Radiologically Controlled Area (RCA), based on a review of Abnormal Occurrence Reports (AORs) and Plant Incident Reports (PIR). The location of each event is shown in Figure 26.
AOR 61-15: Radioactive Spill - On September 20, 1961 a container of main coolant was dropped on the asphalt in the Potentially Contaminated Area between the Primary Auxiliary Building and the Waste Disposal Building while being carried to the Radiochemistry Lab. The half liter sample contained -35 ptCi . The spill was absorbed using absorbent paper and the spill area decontaminated by mopping. Fixed contamination remaining was -0.05 mr/hr at 1" from the pavement.
Impacted Areas NOL-02/ NOL-05 AOR 63-12: Shicld Tank Cavity Fill Water Spill- On September 18, 1963 while filling the shield tank cavity, a l2" sampling valve located over the ion exchange pit was inadvertently left open. A spill of approximately 10 gallons of water from the safety injection tank resulted. Part of this water ran off the deck of the pit and onto a section of the blacktop surface on the west side of the pit. The radiation level at the immediate spill area was70-100 mr/hr measured at 1 inch. Contamination levels were 106 to 107 dpm for areas of several square inches. Run off water caused contamination levels of 20-60,000 dpm/ft2. The area was decontaminated the following day.
Impacted Areas NOL-O1/NOL-02 Impacted StructuresNSY-02 AOR 63-17: De-watering Pump Packing Leakage - October 8, 1963. The leakage from the fuel chute de-watering pump is piped via a garden hose to a 30 gallon drum placed in a storm catch basin (ECB-005) located between the railroad tracks and the NE corner of the spent fuel pit. The bottom rim of the barrel was very corroded and water was dripping from two or three rust hole locations. At the time there was 6"-8" of water in the barrel with activity of 6 x 10-5 pCi/ml. It was believed only minimal water was leaked to the storm system.
ImpactedAreas OOL-01 ImpactedSub-surfaceAreas/Structures- East Storm Drain System YA -REPT-0O-O 10-05
Table 10 Summary of Unplanned Releases of Radioactive Material at YNPS Yankee Nuclear Power Station Rowe, Massachusetts AOR 64-08: Seal Water Tank Spill - On September 3, 1964 after filling the seal water tank, leaking shutdown cooling pump seals back-flowed into the tank causing it to overflow out the vent connection into the common relief valve discharge line and onto the Primary Auxiliary Building roof. An estimated 35 gallons of water containing a total of 270 PCi was spilled. A sample from the seal tank had gross activity of 2 x 10-3 pCi/ml. The puddle on the roof had I x 10-3 pCi/ml. The next day decontamination of the roof was begun. The roof drain system drains into the storm drain system via a sub-surface piping connection. A sample of the storm drain (WCB-009) showed I x 10-6 pCi/ml. The predominant isotopes were Co58, Cowo and Mn? 4. Service Water was diverted to the storm drain to dilute and flush the system.
ImpactedAreas - AUX-01 Roof and Roof Drain System Impacted Sub-surface Areas/Structures- West Storm Drain System AOR 64-13: Leakage from Ion Exchange Pit - On October 3, 1964 after filling the ion exchange pit to its normal level, the operator forgot to close the fill valve. Water continued to flow into the pit from the Primary Water Storage Tank by gravity feed. Four hours later the operator noticed water seeping up through the blacktop on the west side of the pit, knew why and went to close the valve. Two days later the water on the blacktop was sampled. The liquid had a specific activity of 8 x 10-8 pCi/ml. It contained Ag`l m at 5 x 10-7 pCi/ml and Co60 at I x 10-6 pCi/ml, both below MPC. The blacktop was rinsed down with service water to the storm drain (ECB-005).
NOTE:
There were indications of an accelerating IX-pit leakage problem necessitating additions of make-up water to the pit as early as September of 1963. A 2.5 gpm leak was repaired in May 1965 (Primary/Auxiliary Operators logbook entries - Survey Area NSY-02 ref. #1 and #1 and #7).
Impacted Areas NSY-02INOL-01 Inmpacted Sub-sutrfaceAreas/Structures- East Storm Drain System internal and external to piping (backfill) / AUX-01 North external perimeter (backfill) / SFP-01
'West external perimeter (backfill) / BRT-01 Eastern external perimeter YA -REPT-OO-O 10-05
Table 10 Summary of Unplanned Releases of Radioactive Material at YNPS Yankee Nuclear Power Station Rowe, Massachusetts AOR 66-7: Spent Fuel Pit Water Spill - On September 27, 1966 while doing shipping cask operations in the spent fuel pool, a 2" priming valve for the cooling and purification pump was left open. Later, when running the L.P.S.T makeup pump, water flowed through the left open priming valve and started filling the SFP. After a period of time the level in the pool approached the overflow point. By the time the Shift Supervisor realized the reason for the high level and closed the priming valve the water had just started overflowing. It was estimated that a total of 33 gallons of water ran out over the spent fuel pit exterior wall, over a small section of asphalt paving and into an immediately adjacent storm drain (. A kfw gallons of this also leaked into the new fuel vault. A sample of spent fuel pool water taken immediately after the incident a gross activity of 3.2 x 10-5 pCi/ml. A sample taken four days previous to the occurrence indicated the gross activity to be 5.4 x 10-5 pCi/ml and tritium concentration of 5.4 x 10'3 pCi/ml. A continuous service water and intermittent fire-water flush of the east side culvert system (ECB.005) was initiated and continued for a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period. Sufficient dilution water (75,000 gallons) was added to the culvert to reduce the gross and tritium activity to 1.4 x 10-8 pCi/ml and 2.4 x 10-6 pCi/ml, respectively, when averaged over 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Samples of drainage water leaving the east side culvert were taken 24 and 42 hours4.861111e-4 days <br />0.0117 hours <br />6.944444e-5 weeks <br />1.5981e-5 months <br /> afterwards and indicated gross levels of 2.0 x 10-9 pCi/ml (by outside lab) and <5 x 10-9 pCi/ml (by in-house) and tritium (after 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />) of 3.4 x 10-5 pCi/ml. This occurrence resulted in a total release of 4 pCi gross P-y and 670 pCi of tritium activity.
Impacted Areas SFP-01 North external wall INOI-0l ImpactedSub-surfaceAreas/Structures East Storm Drain System internal and external to piping (backfill between SFP-01 and ECB-005)
AOR 66-8: Abnormal Activity in Storm Drain - On September 27, 1966 after the Spent Fuel Pit water spill, a water sample was taken from both east and west storm drain culverts, even though the spill was collected by the east side only. An average of two samples from the west side showed gross activity of 6.7 x 10-7 pCi/ml. Investigation showed the activity was due to a leaky relief valve on the safety injection heating system being discharged into the PAB floor drain. The PAB floor drain was arranged to discharge through the PAB wall into WCB-009, an outside storm drain. It was estimated that no more than 8 gallons could have leaked from the relief valve during the previous 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period. The relief valve was thought not to have been leaking on the previous day.
Analysis of safety injection tank water showed gross activity of 3 x 10'5 PCi'ml and tritium activity of 1.1 x 1O-, pCi/ml. A sample collected 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> later and analyzed by an outside lab showed gross activity of 1.2 x 10-8 pCi/ml and tritium activity of 5.1 x 10-5 pqi/ml. This occurrence resulted in a total estimated release of 0.8 pCi gross J3-y and 3.32 mCi tritium.
ImpactedArea - OOL-05/00L-06 ImpactedSub-surfaceAreas/Structures- WVest Storm Drain system YA-REPT-00-0 10-05
Table 10 Summary of Unplanned Releases of Radioactive Material at YNPS Yankee Nuclear Power Station Rowe, Massachusetts AOR 66-9: Plastic Garden Hose Failure - On November 1, 1966 during a routine drainage on the fuel chute pump discharge line, a plastic garden hose used for the draining burst and flowed into a storm drain served by the east culvert (ECB-005). The burst was caused by heat tracing which softened the line enough so that static pressure inside the line was sufficient to cause the hose to separate at the hose coupling. Approximately 10 gallons of 3.0 x 10-3 activity water (for a total of 113 [tCi) was released. The spill area was hosed down with service water. The service water and a fire hose were left running all night at
-250 gpm for dilution of the culvert. The east culvert was sampled after the spill with results as follows:
Activity (pCi/ml ) - YAEC Activity (ptCi/ml ) - ConRad 11/1/66 @ 1930 4.4 x 10 b 2 x 10"
@ 2145 1.99 x 10 ' 9.1 x 10'
@ 2300 3.18 x 10 '! 9.0 x 10Y 11/2/66 @ 08001 6.3 x 10 0 2.3 x 10-'
11/4/66@2200 1.4 x 10' 2.4 x 10-Since the effects of dilution showed the spill was under control no further action was taken.
ImpactedAreas- N011/QO01-O Impacted Sub-surfaceAreas/Structures- East Storm Drain system AOR 68-1: Waste Holdup Tank Moat Spill- On January 16, 1968 approximately 200 gallons of water spilled from the activity dilution decay tank from a valve bonnet failure event caused by freezing. The spilled water had an activity of 6.87 x 104 pCi/nil f-y and 9.24 x 10-1 pCi/ml tritium. A total of 520 pCi P-y and 698 mCi tritium was spilled into the moat.
Since the moat was kept isolated no release of activity to the storm drains occurred.
ImpactedAreas -
Impacted Sub-surfaceAreas/Structures- NSY-07 PIR 75-7: Yard Area Contamination- On July 16, 1975 a contaminated area of ground was found near the ion exchange pit reading -500,000 dpm. Over the next few days the entire site within the restricted area fence was surveyed. Fourteen areas, ten of which were in the clean area, were found to be contaminated >1000 dpm/100 crr?. Most of this was cleaned up and the remaining was sealed in place using asphalt sealer and covered with clean soil. For more detail see 'Summary of Yard Decontamination Effort in 1975'.
ImpactedAreas - NOL-Ol through NOL,06 YA -REPT-O0-0 10-05
Table 10 Summary of Unplanned Releases of Radioactive Material at YNPS Yankee Nuclear Power Station Rowe, Massachusetts PIR 77-16: Service Building Radioactive Sump Transfer Line Puncture - On December 21, 1977 while conducting core borings inside the controlled area the boring bit inadvertently punctured the 2 '2" stainless steel line leading from the service building sump tanks to the primary auxiliary building. The sump line ran at a depth of 15 feet underground where the damage occurred and the boring depth was 61 1/2 feet. The damage was not detected until the next day when the sump pump started and water issued from the borehole. The sump pump ran through two cycles resulting in 20 gallons of water discharged from the rupture. The water contained the following:
Radionuclide Total Activity, pCi Concentration, ICi/ml Fraction of MPC I__ _ 16.50 2.18 x 10' 3.63 li__ 2.76 3.65 x 10' 0.18 Cs'J 4 0.34 4.46 x 10'b 0.01 Csij/ 0.50 6.67 x 10-' 0.02 CoW0.58 7.69 x 10' 0.01 It was determined that no measurable levels of activity were released offsite or to the storm drain. The line was repaired and a sand and concrete casing poured around it. No mention was made of the leaked upon soil.
ImpactedAreas - NOL-02 Impacted Sub-surface Areas/Structures- Soils surrounding perforation and transfer line backfill PIR 80-9: Resin Spill- On August 6, 1980 while pumping resin to a cask a hose developed a pinhole leak. Pumping was stopped immediately. The failure of the hose allowed the release of several gallons of water and about one quart of resin. A 15 by 20 square foot area was contaminated. Radiation readings on the resin were up to 1 mrad/hr and the spilled liquid readings were up to several hundred thousand dpm/100 crr?. Extensive decontamination was required including removal of some of the blacktop to ensure no release to the environment.
Impacted Areas - NOIO2/NSY-02 Impacted Sub-surfaceAreas/Structures- South and East exterior walls of NSY-02.
Also sub-slab area of NSY-02 (IX-pit) due to transfer by surface (decon/rain) water into cracks between asphalt and IX-pit walls.
YA-REPT-OO-O1O-05
Table 10 Summary of Unplanned Releases of Radioactive Material at YNPS Yankee Nuclear Power Station Rowe, Massachusetts PIR 81-9: Contamination of Yard Area During Reactor lead Removal - On May 15, 1981 while removing the reactor head to the railroad car outside the VC the head made contact with the shield wall. No damage occurred and lowering to the car continued. Later when finished contaminated people and areas were found. Smearable levels on the railroad car plywood 15 feet east of the head read up to 200 mrad/hr beta. This was sealed by painting and covered in herculite. General levels on the blacktop were from 1000 to 500,000 dpm/1 00 cry? and covered an area of roughly 30 feet by 50 feet. The total activity released to the ground was -250 pCi with -10 pCi discharged to Sherman Pond. This was below 10 CFR 20 reporting requirements. The area was cleaned up but due to rainfall trace activity levels were detected in the east storm drains. The storm drain sumps were pumped out and cleaned to eliminate further contamination.
ImpactedAreas - NOL-01/N0L-06/OOL-12/O0 1A3 Impacted Sub-surfaceAreas/Structures- BRT-O1/in cracks and crevasses under VC Equipment Hatch and along rails/ties in OOL-12 and OQL-13 PIR 84-16: Drain Pipe Failure - On September 10, 1984 work was commenced to remove the drain line between the Waste Storage Building and the PCA storage building. The line was 3 1/2 feet below grade at the PCA storage building end. The joints in this pipe were degraded resulting in leakage into the soils surrounding the joints. Samples of the soil under the pipe showed the presence of Co60 and Cs' 37 . In the most contaminated area showed 50,000 dpm with a single hot spot of 29,300 pCi/gm Co60 . Average contamination at 2 feet below this joint was -2100 pCi/gm. Average Cs13 ' levels were about 17 times less than the average Co60 levels. Since this area of the yard was paved there was little likelihood of water transport from the surface. The entire pipe and -420 ft3 of dirt and rock were removed as radwaste. The depth of the soil removed was typically from 5 to 9 feet below grade. The soil left at the bottom of the excavation contained Co-60 at a concentration of approximately 30 pCi/gm. Clean fill was brought in and all areas above the excavation were sealed under a concrete cap (New Radwaste Warehouse floor). For groundwater movement data see PIR 84-16.
Impacted Areas- WST-01IWST-02 Impacted Sub-surface Areas/Structures- WST-02 at a depth of in excess of 9 feet below grade, activity remains in excess of DCGL. Partial remediation under 50.75g.
YA-REPT-00-010-05
Table 10 Summary of Unplanned Releases of Radioactive Material at YNPS Yankee Nuclear Power Station Rowe, Massachusetts PIR 94-03 and PIR 94-09: Leakage from Frozen Fuel Chute Dewatering Line and NST Tell-tales - On February 17 & 18, 1994 a fuel chute dewatering line and a neutron shield tank telltale drain line ruptured due to freezing. Freezing was due to inadequate heat tracing and insulation. A 3.5 liter sample from the fuel chute line indicated 1000 ncpm.
From the NST telltale line a sample indicated Co 60 and Cs' 3 7 . The ground below showed no contamination. The area by the rail tracks and pumpback house also showed no contamination. The snow pile along the south side of the rails by the new fuel vault showed Co 6 0 , Cs'3 7 and Mr{ 4 . All positive areas were sent to the rad drains and the areas de-posted.
Impacted Area - NOL-O1 YA -REPT-0O-0 10-05
Appendix 1 to YA-REPT-OO-010-05 Appendix I to YA-REPT-OD-010-05 GEOLOGIST'S LOG for Well #: MW-106A Project Yankee Ground IWater Investigation Project Nunben Client: Yankee Atornic I-]ectric Carnnanv Logged by- DaveScott Drilling Co: D.L Maher Driller. Roy Buckenberger Date Started. August 30,2004 Date Finshed: August 30,2004 Location: Rowe, Massachu setts Drilling Method: Rotosonic ScreenDianr 2 inches Lengtk 10 feet Slot Size:
Casing Diarn: 2 Inches Length 12 feet Type-Boring Depth 22 feet Well Depth 22 feet Boring Diarn:
Surface Elem.: 1089.2 feet MSL Bh. Ground Surface Depth to GW:
On-Site GW Analyses: None Off-Site GW Analyses: None Depth _Wed Log : Stratigraphy Penetration Recovery Soil Core Description mr m .
2.
3.
4.
See log of MW-i 06B for description of sediment and ground water samples.
5.
6- it 7.
8*
9.
- 10. _ S. <.S, 11.
12 _Mss_ oh's Well Construction Details 13 14 _ u _ % A 0-1': Concrete and Flushmount Roadbox 15 .._ A/ 1-7.5': Portland Cement/Bentonite Grout 16 7.5-9.5': Bentonite Chip Seal 17
' As '3: 9.5-22': #0 Silica Sand Filter Pack 18 0-12': Schedule 40, 2" Diameter PVC Riser 12-22': Schedule 40, 2" Diameter, 0.010-Slot PVC Screen 19 b.MiN,_ At.
. ha _
22': Bottom of Boring 20 21.
- 22. Y_,'
23.
24.
- 25. _ .
28 Key toWell Construction EJ Sandpack M Well Saeen E Cement/BentoniteGrout M Bentoniteweal E' Concrete and Flushnourit Roadbox
Appendix I to YA-REPT-OD-010-5 Yane Nudear Power Station MI-SI
-5~..
GEOLOGIST'S LOG for Well #: MW-106B Act, IRowe. Massadcusetts A;c rroject: Yankee Ground Water Investigation Project Number.
Client Yankee Atomic Electric Company Logged bF Dave Scott Drilling Co: D.L.Maher Driller Roy Buckenberger Date Started August 12, 2004 Date Finished: August 27,2004 Location: Rowe, Massachusetts Drilling Method: Rotosonic Screen Diam 2% Inches Lengthl 10 feet Slot Size. 0.010 Inch Casing Diarm: 2% Inches Length 251 feet Type: Schedule 80, 2X4Inch PVC -1 Boring Depthl 265 feet Well Depth 261 feet Boring Dianr: 5'S Inches Surface Eey. 1088.9 feet MSL MP: Ground Surface Depth to GW: 39.00 feet fromrPVC On-Site CW AnAlvses: I-I Co-60. Cs-134. Cs-137 Off-Site GW Analyses VOCs by 8260B on October31.2004 l *l l -- -~-- --- / e l ______ 0f Ni .--- ~
Depth Well Log Stratigraphy Penetration Recovery Soil Core Description Depth FID Con; Ground Wate (ppm) HS Sample No.'
0-2: Sand, brown, fine to coarse, and dark brown organic 1 silt, little medium to coarse subrounded gravel, unsorted, medium dense, damp.
5 4 2-2.5: Sand, gray, fine, wefl sorted, medium dense, damp. 0 to 5' 0.0 2.5-5': Sand and gravel, brown to orange (in oxidized 4 -zones). fine to coarse, angular, little silt, unsorted, medium
__ _ __ __ _ _ dense, damp._ _ _ _
6 6-7: AlbIte gneiss boulder 8 11: Silt, gray-brown, with fine to medium sand and 9 -subangular gravel, unsorted, moderately dense, damp.
10 10' 7' - 5-15, 0.0 11 Stratified Drift 12: SchIst boulder, oxidized orange, severely 12 -weathered, loose, mostly sand.
13 - 12-13: Same as 7-11', with 4' cobble at 13'.
14 115: Sand and gravel, brown, fine to coarse, subround, little silt, unsorted, loose, wet.
15-17: Same as above, with 4 cobble at 17'.
16 17 GW1 17-20: Silt, brown, with fine to coarse subround gravel, H-3=650 18 -little sand, unsorted, dense, moist; Increasing clay content pCiVL
- 19 with depth. One fist-sized cobble.
_20 10' 7- 22: Sand and gravel, brown, fine to coarse, unsorted. 15-25 0.0 21 -loose, wet.
22 22-25': 1111 consisting of silt, olive, with fine to coarse 23 -angular gravel, little sand, trace clay, unsorted, very 24 Till dense, damp. Advanced 10 drill casing to 25' and pressure grouted with bentonite slurry to seal off aquifer.
25 28 5, 3' See next page. 25-30' 0.0 NOTES: Kea to Well Constrution
'Results of on-site radiological screening <MDL unless otherwise noted ED Sandpack F Well Screen E Cement/Bentonite Grout m Bentonite Seal [O Concrete and Flushmount Roadbox
Appendix 1 to YA-REPT-00-010-05
,- Tj ajoYankee Nuclear Power Station UW4U I-a GEOLOGIST'S LOG for Well #: MW-106C C J Rowe. Massachusetts Project Yankee Ground Water Investigation Project Number Cient Yankee Atomic IElectric Company Logged by Dave Scott Drilling Co: D.L Maher Driller. Roy Buckenberger Date Started. August 30,2004 Date Fulished: September 8.2004 Location: Rowe, MassachuLsetts Drilling Method: Rotosonic Screen Diam: 2 Inches Length: 5 feet Slot Size. 0.010 inch Casing Diarn: 2 Inches Length. 90 feet Type: Schedule 40,2-Inch PVC Boring Depth- 95 feet Well Depth: 95 feet Boring Dian.: 5' Inches Surface EDev.: 1089.0 feet MISL MW: Ground Surface Depth to GW: 38.90 feet from PVC On-Site GW Analyses: None Off-Site GW Analyses: None on October31 2004 Log _ fFD Con,,, GroundWater l
Depth Wel LOg 72 StraUgraphy Tl Penetration Recovery Soil Core Description 1 1 Depth ( Ground Wter p~pn)HS1 Sample No.'
73
-74 75 X See log of MW-I 06B for description of sediments and ground water samples
- 77 .
-78 79 81 82 83 84 Well Construction Details 85
- 86 0-1': Concrete and Flushmount Roadbox 87 1-80': Portland Cement/Bentonite Grout 88 80-86.5': Bentonite Chip Seal 86.5-95': #0 Silica Sand Filter Pack 0-90': Schedule 40, 2" Diameter PVC Riser 90-95': Schedule 40, 2" Diameter, 0.010-Slot PVC Screen
_91 95': Bottom of Boring 0-25': 8" Steel Casing Cement/Bentonite Grouted in Place 93
_94 .
_95 96 97 Key to Well Construction E:: Sandpack i Well Screen E Cement/Bentonite Grout M BentoniteSeal S ConcreteandFlushmountRoadbox
Appendix I o YA-REPT-00-010-05 GEOLOGIST'S LOG for Well #: MW-106D Prject: Yankee Ground Water lnvestivafion Project Number.
Client Yankee Atomic Ekl-ctric Company Logged by: Dave Scott Drilling Co D.L Maher Driller Roy Buckerberger Date Started: September 8. 2004 Date Fuished: September 14, 2004 Location: Rowe, MassachuseItts Drilling Method: Rotosonic Screen Diamn: 2X kiches Length 10 feet Slot Size: 0.010inch Casing Diam: 2X Inches Length: 144 feet Type: Schedule 80, 214-nd Boring Depth: 155 feet Well Depth 154 feet Boring Diani: 51 idches Surface Elev : 1089.1 feet MSL MP: Ground Surface Depth to GW: 4370 feet from PVC On-Site GW Analyses: None Off-Site GW Analyses: None on October31, 2004 Depth IWell LogI Stratigraphy I PenetrationI Recovery Soil Core Description 130 -
- 131 -
- 132 _
_ 133 -
See log of MW-1 06B for description of sediments and ground water samples
-134 _
_135 -
-136 -
- 137 _
- 138 -
-139 -
- 1402-
- 141 -
-142 -
Well Construction Details
- 143 -
.144 . 0-1': Concrete and Flushmount Roadbox
- 145 - 1-132': Portland Cement/Bentonite Grout 1146 _ 132-142': Bentonite Chip Seal
_147.
142-155': #0 Silica Sand Filter Pack 0-144': Schedule 80, 2%" Diameter PVC Riser
- 148 144-154': Schedule 80, 2N" Diameter, 0.010-Slot PVC Screen
_149 155': Bottom of Boring
_150 0-25': 8" Steel Casing Cement/Bentonite Grouted in Place 151
- 152
-153
- 154 155 -
Ker to Well Construction E Sandpack E Well Screen M Cement/BentoniteGrout M Bentonite Seal [ Concrete and Flushmount Roadbox
Appendix 1 to YA-REPT-O010-05
,7jj Yankee Nuclear Power Station GEOLOGIST'S LOG for Well #: MW-108A lY.-.y N Rowe, Massachusetts I Project Yankee Ground Water Investigation Project Number aient Yankee Atomic Electric Company Logged by. Dv rScott Drilling CO: D.L. Maher Driller Roy IBuckenberger Date Started July16, 2004 Date Fmished. )uly116,2004 A .na Locationr Rowe, Massachiiusetts Drilling Method: Rote . L' Screen Diam 2 Inches Length 10 feet Slot Size: 0.010 inch Casing Diam: 2 Inches Length 15 feet Type. Schedule4l 4,2-Inch PVC U4 Boring Depth 25 feet Well Depth 25 feet Boring Diam.: 5' Inches Surface Elev: 1118.4 feet MSL MP: Ground Surface Depth to GW: 1231 feet f rom PVC On-Site GW Analyses: None Off-Site GW Analyses: None on October31.2004
_ _ __-_ _ - - - - --- - IL- -
Depth Well Log Stratigraphy lPenetration Soil Core Description Recovery Depth FIDCono. Ground Water I(ppm) HS Sample No.
2 3
4 5 See log of MW-I 08B for description of sediment and ground water samples.
6 7
-9 10 11 12 13 .Well Construction Details:
14
-15 0-1': Concrete and Flushmount Roadbox 26 _-6.1': 1 Portland Cement/Bentonite Grout 17- 6.1'-10': Bentonite Chip Seal 18- 1 0'-25': #0 Silica Sand Filter Pack
-19 0-15': Schedule 40 2" PVC Riser
._ 15'-25': Schedule 40 2" PVC, 0.010-Slot Screen 25': Bottom of Boring 21-22 23-24 .
25 26 Key to Well Construction
@ Sandpadc E Well Screen E Cement/BentoniteGrout m Bentonite Seal m Concrete and Flushnount Roadbox
Appendix I to YA-REPT-00-010-05
__ s -
Yankee Nuclear Power Station GEOLOGIST'S LOG for Well #: MW-108BC #D ~ Rowe, Massachusetts Project Yankee Ground Water Investigation Project Numben I-Client Yankee Atomic Electric Company Logged by Dave Scott Drilling Co: D.L MaLher Drillen Roy Buckenberger Date Started July 8,2004 Date Fnshed. July 15, 2004 I - A Location: Rowe, Massachusetts Drilling Method: Rotosonic
. . I -
Screen Diar: 2A Inches Length 10 feet Sot Size. 0.010 Inch Casing Diam: 2' Inches LengthL 205 feet Type. Schedule 80, 2Minch PVC I/
Boring Depth 215 feet Well Depth 215 feet Boring Diam.: 5' Inches Surface Eev.: 11185 feet MSL MP:. Ground Surface Depth toGW: 53.43 feet from PVC OnSit. CW Analyses: H-3 Co-60. Cs-134. Cs-37 Off-Site GW Analvses VOCs bv 8260B on October 31.2004 Depth Wen Log Stratigraphy Penetration Recovery Soil Core Description Depth FIpCnc Ground Water (ppm) HS Sample No.'
2 -il consisting of sand, brown, fine to medium, and fine to 5' 4' coarse subround gravel, some cobbles, some sift, 0-5 0.0 3 -unsorted, loose, dry.
4 5
6 2' 2' -Sand, brown, fine to coarse, little medium to coarse 5-r 0.0 gravel, some silt, unsorted, loose, wet at 7.
7 Fill 8 -Sand, brown, fine, some silt, trace fine gravel, rounded, 710' 0.0 unsorted, loose, wet.
10
_11.
12 4' -5Sand, brown to gray-green, fine and gravel, fine to coarse, 10-15' 0.0 13 - -some silt, unsorted, medium dense, wet.
-GW-1 H-16 -Silt, dark brown, organic and sand, very fine, trace fine to 3<30O 17 .' 3' medium subangular gravel, unsorted, loose, wet. 15-18 100 pCVL 18 Stratified Drift 19 2' 2' -Same as above, but gray-green. 18-20 0.0 20 20-21': Sand, brown, med. to very coarse and gravel, f. to 21 -c., rounded, trace silt, unsorted, medium dense. wet.
22 -_21-24': Silt, gray-brown and sand, very fine, some
-5 5' subangular fine to medium gravel, few cobles, unsorted, 20-25' 0.0 23nill dense, moist.
24 25': Till: silt, brown, some f. to c. sand, subangular f. to 25 C.gravel, few cobbles, unsorted, very dense, dry.
2 1' 1' Same as 24-25'. 25-26' 0.0 NOTES: Key to Well Construction
'Results of on-site radiological screening <MDL unless otherwise noted E] Sandpack E Well Screen E Cernent/Bentonite Grout M &tentoniteSeal S Concrete and Flushmount Roadbox
Appendix I to YA-REPT-OG-01O-05
//
GEOLOGIST'S LOG for Well #: MW-108C k Project: Yankee Ground Water Investigation Project Number.
Client: Yankee Atomic Electric Company Logged by, Dave Scott Drilling Co: D.L. Maher Driller Bill Zamow (6/2 3-6/25), Roy Buckenberger (6/28-7/7)
Date Started: June 23,2004 Date Finished: July 7, 2004 Location: Rowe, Massachusetts Drilling Method: Rotosoric Screen Diam: 2 Inches Length S feet Slot Size: 0.010 inch Casing Diam: 2 Inches Length 60 feet Type Schedule 4(1,2-Inch PVC Boring Depth 170 feet (see note below) Well Depth: 65 feet Boring Diam.: 7% iches Surface Elev- 1118. feet iSL hip: Ground Surface Depth to GW: 14.20 feet fr On-Site GWAnalyses: None Soil Core Description See log of MW-I 08B for description of sediment and ground water samples.
Well Construction Details:
0-1': Concrete and Flushmount Roadbox 1'-51': Portland Cement/Bentonite Grout 51'-57': Bentonite Chip Seal 57'-67': #0 Silica Sand Filter Pack 0-60': Schedule 40 2" PVC Riser 60'-65': Schedule 40 2" PVC, 0.01 0-Slot Screen 170': Bottom of Boring (filled to 67' with bentonite chips) 0-26': 8" Steel Casing Cement/Bentonite-Grouted in Place Key to Well Construction E Sandpack E Well Screen E Cement/Bentonrte Grout m Bentonlte Seal [ Concrete and Flushmount Roadbox
Appendix I to YA-REPT-00-010-05 GEOLOGIST'S LOG for Well #: MW-109B Project Yankee Ground Water Investigation Project Number. _
(-)A S*
z l~y-ankee Nudear Por estation l (
IRowe,Mash v
Cient Yankee Atomic lectric Company Logged bF Dave Scott (0-20') and Mike Ravella (20-190Y)
Drilling Co: D.L Maher Driller Roy Buckenberger DateStarted: July20,2004 DateFuinshed. August2,2004 Location: Rowe, Mtasachusetts Drilling Method: Rotosonic Screen Diarn: 21 Inches Length 10 feet Slot Size. 0.010 inch
- Casing Diarn 2%Inches Length 180 feet Type. Schedule 80, 2Y.-Inch PVC BoringDepth 190 feet Well Depth: 190 feet Boring Dian: 5%' inches \
Surface Elev_ 1124.6 feet MISL NIP: Ground Surface Depth to GW: 2&70 feet from PVC \ (
On-SiteGWAnalyses: 11-3,Co-60,Cs-134,Cs-137 Off-ite GW Analyses VOCs by 8260B on October 31,2004 Depth Well Log Straligraphy Penetration Recovery Soil Core Description Depth (FpDp CoHS Sarple No.-
- -Fill consisting of slft, brown and fine to coarse sand, some 2 4 1 -fine to coarse subangular gravel, one fist-sized cobble, 04 0.0 3 -Funsorted, loose, dry.
4 Fill
- 1. 1. Boulder: rusty-weathering gneiss. 4-5 0.0
- 65-65: Same boulder; rusty-weathering gneiss.
6 7 - 6-8': Fill, same as 04; dark brown oxidized zone at 8'.
8 6' 6' 5-11' 0.0 9 111: Sand, fine to medium and rounded fine to coarse 10 _gravel, with brown silt, few cobbles, unsorted, loose, dry.
_11_._
12 Stratified Drift 1' 1' Boulder: albite gneiss. 11-12' 0.0 GW-1 13 13.5': Same boulder. H-3< 300 133' 2.5' 12-15, 0.0 pl/ -
14 13.5-15': Silt, brown and fine to coarse angular gravel,
-_15 - little fine to medium sand, unsorted, loose, wet.
16 17 Till consisting of silt, olive, some fine to coarse sand and
_1S 5 -fine to coarse subangular gravel, trace clay, unsorted, 15-20' 0.0 18 . very dense, damp. Advanced permanent 8' steel casing to 20' and cement grouted.
19 20 Till 21
-22 .Grayish Brown (5YR312) Gravely Silt: mostly silt. some 5' 4' gravel, little day, poorly sorted, hard, damp, poor 20-25' 0.0 23 -plasticity. (Till1).
24 4' 3.5' See next page. 25-29' 0.0 NOTES: Key to Well Construction
- Results of on-site radiological screening <MDL unless otherwise noted E Sandpack F Well Screen 0 Cement/Bentonite Grout m Bentonite Seal [ Concrete and Flushnount Roadbox
Appendix 1to YA-REPT-00-010-05
' FYankee Nuclear Power Station (! v GEOLOGIST'S LOG for Well #: MW-109C (ys) Rowe. Massachusetts Project Yankee GroundWaterlnvestigation Project Number _ _ _ _ _ _ _ _
Client: Yankee Atomic Electric Company Logged by. Dave Scott Drilling Co D.L Maher Driller. Roy Buckenberger Date Started: August 6.2004 Date Finished: August9.2004 Location: Rowe, Massachusetts Drilling Method: Rotosonic Screen Diannm 2 Inches Length 5 feet Slot Size 0.010 inch Casing Dianm 2 Inches Length 49 feet Type: Schedule 40,24nch PVC Boring Depth 55 feet Well Depth 54 feet Boring Dian.: 51 Inches \
Surface Elev.: 1124.2 feet MSL MP: Ground Surface Depth to GW: 15.28 feet from PVC \ f On-Site GW Analyses: None Off-Site GW Analyses. None on October 31.2004 I _ 1___-
.~ _ \ \
Depth Well Log Stratgraphy l Penetration Recovery l Soil Core Description le l FID Conc. Ground Water D~~pionDeph g(ppmn) HS Sample No.'
-31 32
-33 34
. 3 l See log of MW-1 09B for description of sediment and ground water samples.
-36 37
-38 39 40 41 42 43 Well Construction Details:
44 45 _ *0-1': Concrete and Flushmount Roadbox 46 1'-42.5': Portland Cement/Bentonite Grout 47 _.42.5'-46.8': Bentonite Chip Seal 46.8'-55': #0 Silica Sand Filter Pack 48 .0-49': Schedule 40 2" PVC Riser 49 _-49'-54': 0.010" Schedule 40 2" PVC Screen 55': Bottom of Boring 51 -
52 53 54 55 56 =
Key to Well Construction n sdandpack E Well Screen E Cernent/Bentonite Grout m Bentonite Seal EM Concrete and Flushrnount Roadbox
Appendix I to YA-REPT-D0-01 0-05 GEOLOGIST'S LOG for Well #: MW-109D Proiect Yankee(
Client Yankee, Drilling Co: D.L Ma!
DateStarte& August:
Location Rowe, IV Screen Diam 2 inches Casing Diarm 2 inches BoringDepth 113 feet Surface Elev 11242 fe On-Site GWAnalyses l Deptih
- 77.' - 79So
- 80 See log of MW-i 09B for description of sediment and ground water samples.
- 81
- 82 83
-85 - 87 - .
- 88 _ .
Well Construction Details: n
. 0-1': Concrete and Flushmount Roadbox L 92_ 1'-83': Portland Cement/Bentonite Grout
_ 93 83'-86': Bentonite Chip Seal 86'-96': #0 Silica Sand Filter Pack 94- 0-88.7': Schedule 40 2" PVC Riser 95 88.7'-93.7': 0.010" Schedule 40 2" PVC Screen 113': Bottom of Boring (filled to 96 feet with bentonite chips) 97 0-21': 8" Steel Casing Cement/Bentonite-Grouted in Place 100 101 102 KcX to Well Construction E:] Sandpack i Well Screen [ Cement/BentoniteGrout M Bentonite Seal [ Concrete and Flushmount Roadbox