ML071380248

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Annual Radiological Groundwater Protection Program Report for 2006
ML071380248
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 05/31/2007
From:
Teledyne Brown Engineering Environmental Services
To:
Exelon Nuclear, NRC/FSME
References
FOIA/PA-2010-0209
Download: ML071380248 (38)
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Text

Docket No:

50-010 50-237 50-249 DRESDEN NUCLEAR POWER STATION UNITS 1, 2 and 3 Annual Radiological Groundwater Protection Program Report 1 January Through 31 December 2006 Prepared By Teledyne Brown Engineering Environmental Services Nuclear Dresden Nuclear Power Station Norris, IL 60450 May 2007

Table Of Contents I. Sum m ary and Conclusions................................................................................................

1 I1. Introduction........................................................................................................................

2 A. Objectives of the RG PP...................................................................................

4 B. Im plem entation of the Objectives.....................................................................

4 C. Program Description.........................................................................................

5 D. Characteristics of Tritium (H-3).......................................................................

5 Ill. Program Description.....................................................................................................

6 A. Sam ple Analysis................................................................................................

6 B. Data Interpretation...........................................................................................

6 C. Background Analysis.........................................................................................

7

1. Background Concentrations of Tritium..................................................

8 IV. Results and Discussion...............................................................................................

9 A. Groundwater Results.........................................................................................

9 B. Drinking W ater W ell Survey............................................................................

10 C. Summary of Results - Inter-laboratory Comparison Program.......................

10 D. Leaks, Spills, and Releases..........................................................................

11 E. Trends............................................................................................................

11 F. Investigations..................................................................................................

11 G. Actions Taken................................................................................................

11

- i -

Appendices Appendix A Location Designation Tables Table A-I:

Radiological Groundwater Protection Program - Sampling Locations, Distance and Direction, Dresden Nuclear Power Station, 2006 Eigur~s Security-Related Information: Maps of the Dresden Nuclear Power Station have been withheld from public disclosure under 1 OCFR2.390 and N.J.S.A. 47:1A-1.1 Appendix B Tables Table B-1.1 Table B-1.2 Table B-1.3 Table B-1.4 Table B-1.5 Table B-1.6 Data Tables Concentrations of Tritium in Groundwater Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2006.

Highest to Lowest Concentrations of Tritium in Groundwater Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2006.

Concentrations of Strontium in Groundwater Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2006.

Highest to Lowest Concentrations of Strontium in Groundwater Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2006.

Concentrations of Gamma Emitters in Groundwater Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2006.

Highest to Lowest Concentrations of Gamma Emitters in Groundwater Samples Collected in the Vicinity of Dresden Nuclear Power Station, 2006.

- ii -

I.

Summary and Conclusions Dresden Station is situated on approximately 600 acres of land that borders the Illinois River to the north and the Kankakee River to the east. This land is referred to as the owner-controlled area. The Dresden power plant itself takes up a small parcel of the owner-controlled area and is surrounded by a security fence. The security fence defines what is known as the Protected Area (P.A.).

The Dresden power plant has experienced a number of leaks from underground lines and spills from above ground systems containing radioactive water over its 40-year history. These incidents have created a number of areas of localized contamination within the P.A. Isotopic analyses of groundwater in many of these areas show measurable concentrations of tritium (H-3). In addition, Strontium (Sr-90) was detected just above the Lower Limit of Detectability (LLD) in one of the wells within the P.A.

Dresden recently participated in a fleetwide hydrogeologic investigation in an effort to characterized groundwater movement at each site. This investigation also compiled a list of the historic spills and leaks. Combining the tritium concentration in a locally contaminated area with the speed and direction of groundwater in the vicinity can produce a contaminated groundwater plume projection. If the plume of contaminated groundwater passes through the path of a groundwater monitoring well, it can be anticipated that the tritium concentration in this well will increase to some maximum concentration, then decrease over time.

The fleetwide Hydrogeologic Investigation Report (HIR) shows that groundwater movement on the Dresden site is very slow. In addition, there is a confining rock layer, the Maquoketa Shale layer, about 55 feet below the surface that impedes groundwater movement below this depth. The results of the HIR are available on:

[httpl//www. exeloncorp com/ourcompanies/powergen/nuclear/Tritium. htm].

Dresden has a domestic water system that is supplied by two deep wells (1500 feet deep) that were installed about 50 years ago south of the P.A. Routine samples are taken from domestic water supply and have never shown any detectable tritium concentration.

Tritium has a half-life of 12.3 years. This means that 40 years from now 90% of the tritium on site today will have decayed away to more stable elements.

Given the limited volume of contaminated groundwater on site, radioactive decay, slow groundwater movement, and dilution effects the conclusion of the HIR is that the operation of Dresden Nuclear Power Station had no adverse radiological impact on the environment. As a result there is little potential for contaminated groundwater on site to affect off-site drinking water.

II. Introduction Radiological Groundwater Monitoring Program (RGPP):

Dresden has a Radiological Groundwater Monitoring Program (RGPP) that provides long-term monitoring intended to verify the fleet-wide hydrogeologic study conclusions.

Dresden uses developed groundwater wells and surface water sample points in the RGPP.

The Dresden RGPP was established in 2006, and, therefore, there are no changes to this program from previous years. This program does not impact the operation of the plant and is independent of the REMP.

Developed groundwater wells are wells that were installed specifically for monitoring groundwater. These wells are equipped with screens and are properly sealed near the surface to avoid surface water intrusion. The wells were designed in accordance with appropriate codes and developed in accordance with appropriate standards and procedures. Dresden has groundwater monitoring wells identified as "shallow" (depths from 15 to 35 feet), "Intermediate" (depths from 35 to 55 feet) and "deep" (depths beyond 100 feet). All wells installed to a depth greater than 100 feet ("deep" wells) were found to be dry and removed from the RGPP. Surface water sample points are identified sample locations in the station's canals and cooling pond.

There are 71 sampling points in the RGPP:

  • Dresden has 39 developed groundwater monitoring wells within the Protected Area.

Some of these wells form a ring just inside the security fence and the remaining wells were installed near underground plant system piping that contains radioactive water.

  • Dresden has 26 developed groundwater monitoring wells outside the P.A. the majority of which form a ring just within the perimeter of the property.
  • Dresden has 6 surface water monitoring locations on the owner-controlled area sampled as part of the Dresden RGPP. These consist of one sample from 5 different canals and one sample from the cooling pond.

The Dresden site-specific RGPP procedure identifies the historic 'events' that would affect the individual RGPP sample results. This procedure identifies threshold values for each sample point, which if exceeded, could be an indication of a new spill from an above ground system or a new leak in an underground pipe containing tritiated water.

The RGPP sample points are currently sampled on a frequency of twice per year.

During 2006, there were 529 analyses that were performed on 214 samples from 71 sample points.

Supplemental Radiological Groundwater Monitoring Program (SRGPP)

Dresden also has a Supplemental Radiological Groundwater Monitoring Program (SRGPP) that provides short-term monitoring of a limited selection of monitoring points, mostly within the P.A., intended to identity relatively rapid changes in the groundwater tritium concentrations.

In addition to the 71 sampling points in the RGPP, the SRGPP also includes sampling of 9 sentinel wells, 39 sewers and 1-trench totaling 120 possible sample points.

Sentinel Wells, sometimes referred to as "baby wells" are wells that were installed to monitor local shallow groundwater; typically in associated with a historic underground pipe leak. These wells are not constructed to code or developed to a standard. Most sentinel wells are from 6 to 12 feet deep and consist of 2" PVC pipe without screens.

Many sentinel wells were installed near a leaking underground HPCI suction line and were subsequently removed as part of the excavation and repair of that line.

Dresden has two basic storm water runoff sewer systems within the P.A: one sewer-system routes to the east, then north, and discharges into the Unit 1 intake canal, the second sewer-system routes to the west, then north, through a large Oil Separator, and discharges to the hot canal. Both the Unit 1 intake canal and the hot canal eventually route to the cooling pond.

Dresden has a trench, or storm-water ditch, that runs along the south side of the P.A.

Rainwater run-off and subsurface water to a depth of about 4 feet flows into this trench discharging into the hot canal to the west and the Kankakee River to the east. This and other trenches around the site can be sampled surface and near surface water on site.

The Dresden site-specific RGPP procedure identifies the historic 'events' that would affect the individual SRGPP sample results. This procedure identifies threshold values for each sample point, which if exceeded, could be an indication of a new spill from an above ground system or a new leak in an underground pipe containing tritiated water.

The Dresden SRGPP in 2006 included sampling of 3 sewers and 5 sentinel wells at a frequency of approximately every two weeks.

During 2006, there were 299 analyses that were performed on 299 samples from 8 sample points.

A. Objectives of the RGPP The Objective of the RGPP is to provide long-term monitoring intended to verify the fleet-wide hydrogeologic study conclusions. The objective of the SRGPP is to provide indication of short-term changes to groundwater tritium concentrations within the P.A.

If isotopic results of groundwater samples exceed the thresholds specified in this procedure it could be an indication of a new spill from an above ground system or a new leak in an underground pipe containing tritiated water.

Specific Objectives include:

1.

Perform routine water sampling and radiological analysis of water from selected locations.

2.

Report new leaks, spills, or other detections with potential radiological significance to stakeholders in a timely manner.

3.

Regularly assess analytical results to identify adverse trends.

4.

Take necessary corrective actions to protect groundwater resources.

B.

Implementation of the Objectives

1.

Dresden Nuclear Power Station will continue to perform routine sampling and radiological analysis of water from selected locations.

2.

Dresden Nuclear Power Station has implemented new procedures to identify and report new leaks, spills, or other detections with potential radiological significance in a timely manner.

3.

Dresden Nuclear Power Station staff and consulting hydrogeologist assess analytical results on an ongoing basis to identify adverse trends.

4.

If an adverse trend in groundwater monitoring analytical results is identified, further investigation will be undertaken. If the investigation identifies a leak or unidentified spill, corrective actions will be implemented.

C.

Program Description Dresden has a Radiological Groundwater Monitoring Program (RGPP) that provides long-term monitoring intended to verify the fleet-wide hydrogeologic study conclusions. Dresden uses 71 developed groundwater wells and surface water sample points in the RGPP.

Dresden also has a Supplemental Radiological Groundwater Monitoring Program (SRGPP) that provides short-term monitoring of a limited selection of monitoring points mostly within the P.A. intended to identity relatively rapid changes in the groundwater tritium concentrations. In addition to the 71 sampling points in the RGPP, the SRGPP also includes sampling of 9 sentinel wells, 39 sewers and 1-trench totaling 120 possible sample points.

1.

Sample Collection Sample locations can be found in Table A-1 and Figures A-1 and A-2, Appendix A.

Groundwater and Surfarce Water Water samples are collected in accordance with the schedule delineated in the Dresden site-specific RGPP and SRGPP procedures. Analytical laboratories are subject to internal quality assurance programs, industry crosscheck programs, as well as nuclear industry audits. Station personnel review and evaluate the analytical results.

D.

Characteristics of Tritium (H-3)

Tritium (chemical symbol H-3) is a radioactive isotope of hydrogen. The most common form of tritium is tritium oxide, which is also called "tritiated water." The chemical properties of tritium are essentially those of ordinary hydrogen.

Tritiated water behaves the same as ordinary water in both the environment and the body. Tritium can be taken into the body by drinking water, breathing air, eating food, or absorption through skin. Once tritium enters the body, it disperses quickly and is uniformly distributed throughout the body. Tritium is excreted primarily through urine with a clearance rate characterized by an effective biological half-life of about 14 days. Within one month or so after ingestion, essentially all tritium is cleared. Organically bound tritium (tritium that is incorporated in organic compounds) can remain in the body for a longer period.

Tritium is produced naturally in the upper atmosphere when cosmic rays strike air molecules. Tritium is also produced during nuclear weapons explosions, as a by-product in reactors producing electricity, and in special production reactors, where the isotopes lithium-7 and/or boron-10 are activated to produce tritium.

Like normal water, tritiated water is colorless and odorless. Tritiated water behaves chemically and physically like non-tritiated water in the subsurface, and therefore tritiated water will travel at the same velocity as the average groundwater velocity.

Tritium has a half-life of approximately 12.3 years. It decays spontaneously to helium-3 (3He). This radioactive decay releases a beta particle (low-energy electron). The radioactive decay of tritium is the source of the health risk from exposure to tritium. Tritium is one of the least dangerous radionuclides because it emits very weak radiation and leaves the body relatively quickly. Since tritium is almost always found as water, it goes directly into soft tissues and organs. The associated dose to these tissues is generally uniform and is dependent on the water content of the specific tissue.

III.

Program Description A.

Sample Analysis This section describes the general analytical methodologies used by Teledyne Brown Engineers (TBE) and Environmental Incorporated Midwest laboratories (EIML) to analyze the environmental samples for radioactivity for the Dresden Nuclear Power Station RGPP in 2006.

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

1.

Concentrations of gamma emitters in groundwater and surface water.

2.

Concentrations of strontium in groundwater and surface water.

3.

Concentrations of tritium in groundwater and surface water.

B.

Data Interpretation The radiological data collected prior to Dresden Nuclear Power Station becoming operational were used as a baseline with which these operational data were compared. For the purpose of this report, Dresden Nuclear Power Station was considered operational at initial criticality. Several factors were important in the interpretation of the data:

1.

Lower Limit of Detection and Minimum Detectable Concentration The lower limit of detection (LLD) is specified by federal regulation as a minimum sensitivity value that must be achieved routinely by the analytical parameter.

2.

Laboratory Measurements Uncertainty The estimated uncertainty in measurement of tritium in environmental samples is frequently on the order of 50% of the measurement value.

Statistically, the exact value of a measurement is expressed as a range with a stated level of confidence. The convention is to report results with a 95% level of confidence. The uncertainty comes from calibration standards, sample volume or weight measurements, sampling uncertainty and other factors. Exelon reports the uncertainty of a measurement created by statistical process (counting error) as well as all sources of error (Total Propagated Uncertainty or TPU). Each result has two values calculated.

Exelon reports the TPU by following the result with plus or minus +

the estimated sample standard deviation, as TPU, that is obtained by propagating all sources of analytical uncertainty in measurements.

Analytical uncertainties are reported at the 95% confidence level in this report for reporting consistency with the AREOR.

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

For groundwater and surface water 11 nuclides, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, Cs-134, Cs-137, Ba-140 and La-140 were reported.

C.

Background Analysis A pre-operational radiological environmental monitoring program (pre-operational REMP) was conducted to establish background radioactivity levels prior to operation of the Station. The environmental media sampled and analyzed during the pre-operational REMP were atmospheric radiation, fall-out, domestic water, surface water, marine life, and foodstuffs. The results of the monitoring were detailed in the report entitled, Environmental Radiological Monitoring for Dresden Nuclear Power Nuclear Power Station, Commonwealth Edison Company, Annual Report 1986, May 1987.

1.

Background Concentrations of Tritium The purpose of the following discussion is to summarize background measurements of tritium in various media performed by others. Additional detail may be found by consulting references (CRA 2006).

a.

Tritium Production Tritium is created in the environment from naturally occurring processes both cosmic and subterranean, as well as from anthropogenic (i.e., man-made) sources. In the upper atmosphere, "Cosmogenic" tritium is produced from the bombardment of stable nuclides and combines with oxygen to form tritiated water, which will then enter the hydrologic cycle. Below ground, "lithogenic" tritium is produced by the bombardment of natural lithium present in crystalline rocks by neutrons produced by the radioactive decay of naturally abundant uranium and thorium. Lithogenic production of tritium is usually negligible compared to other sources due to the limited abundance of lithium in rock. The lithogenic tritium is introduced directly to groundwater.

A major anthropogenic source of tritium and strontium-90 comes from the former atmospheric testing of thermonuclear weapons. Levels of tritium in precipitation increased significantly during the 1950s and early 1960s, and later with additional testing, resulting in the release of significant amounts of tritium to the atmosphere. The Canadian heavy water nuclear power reactors, other commercial power reactors, nuclear research and weapons production continue to influence tritium concentrations in the environment.

b.

Precipitation Data Precipitation samples are routinely collected at stations around the world for the analysis of tritium and other radionuclides. Two publicly available databases that provide tritium concentrations in precipitation are Global Network of Isotopes in Precipitation (GNIP) and USEPA's RadNet database. GNIP provides tritium precipitation concentration data for samples collected world wide from 1960 to 2006.

RadNet provides tritium precipitation concentration data for samples collected at stations through out the U.S. from 1960 up to and including 2006. Based on GNIP data for sample stations located in the U.S. Midwest, tritium concentrations peaked around 1963. This peak, which approached 10,000 pCi/L for some stations, coincided with the atmospheric testing of thermonuclear weapons. Tritium concentrations in surface water showed a sharp decline up until 1975 followed by a gradual decline since that time. Tritium concentrations in Midwest precipitation have typically been below 100 pCi/L since around 1980. Tritium concentrations in wells may still be above the 200-pCi/L detection limit from the external causes described above. Water from previous years and decades is naturally captured in groundwater, so some well water sources today are affected by the surface water from the 1960s that was elevated in tritium.

c.

Surface Water Data Tritium concentrations are routinely measured in large surface water bodies, including Lake Michigan and the Mississippi River. Illinois surface water data were typically less than 100 pCi/L.

The radio-analytical laboratory is counting tritium results to an Exelon specified LLD of 200 pCi/L. Typically, the lowest positive measurement will be reported within a range of 40 -

240 pCi/L or 140 +/- 100 pCi/L. These sample results cannot be distinguished as different from background at this concentration.

IV.

Results and Discussion Dresden Station has initiated a Radiological Groundwater Protection Program (RGPP) in 2006.

A.

Groundwater Results Goundwater Samples were collected from on and off-site wells throughout the year in accordance with Dresden's RGPP. Analytical results and anomalies are discussed below.

Tritium Of the 39 developed groundwater-monitoring wells inside the Protected Area, 28 wells show some level of tritium contamination ranging from just above LLD to 150,000 pCi/L.

Of the 26 developed groundwater-monitoring wells outside the Protected Area, 2 wells show tritium contamination just above LLD. One of these wells is located near the radwaste discharge line (about 200 yards north of the plant) that ruptured in 1999. The other well is about 1500 feet south of the Security Check point adjacent to the hot canal that had measurable concentrations of tritium from an upstream source for several years prior to 2006.

Strontium-90 was detected in one well MW-DN-1081. The result of seven analyses averaged 3.4 pCi/L. This is attributed to a release from a Unit 1 off-gas line in November of 1975.

Gamma Emitters and Strontium Potassium-40 was detected in 33 of 197 samples. The concentrations ranged from 36 pCi/liter to 332 pCi/liter. Cobalt-60 was detected on one sample at a concentration of 4 pCi/liter. No other gamma emitting nuclides were detected. (Table B-1.5 and B-1.6, Appendix B).

B.

Drinking Water Well Survey A drinking water well survey was conducted during the summer 2006 by CRA (CRA 2006) around the Dresden Nuclear Power Station.

C.

Summary of Results - Inter-Laboratory Comparison Program Inter-Laboratory Comparison Program results for TBE and Environmental Inc. (Midwest Labs) are presented in the AREOR.

D.

Leaks, Spills, and Releases In the summer of 2004 elevated tritium concentrations were identified in sentinel wells by the HPCI suction line near the HPCI room. This line was found leaking and about one-half of the line was excavated and replaced.

In January of 2006 there was an increase in tritium concentration in two sentinel wells near the HPCI suction line adjacent to the 2/3B Contaminated Storage Tank (2/3B CST). This suggested that the other half of the HPCI suction line was leaking. The line was excavated and pressure tested. It was determined that this line was not leaking. The line did show some indications of degradation and as a result, this half of the line was replaced.

There was no other incidence of a leak, spill or release in 2006.

E.

Trends The leak from the HPCI line in 2004 left an area of tritium contamination near the excavation site. The plume from this event was predicted to travel west then north around the foundation of the Reactor Building toward the Cribhouse intake structure.

The groundwater monitoring well just south of the Floor Drain Surge Tank has shown an increasing trend of tritium concentration. It is believed that the plume from the 2004 HPCI line leak has produced this increasing trend.

F.

Investigations Two new groundwater-monitoring wells were installed in late 2006 with the intent of intercepting the highest concentration of the plume from the 2004 HPCI line leak. As expected, the results of these two wells showed tritium concentration of approximately 120,000 pCi/I and approximately 100,000 PCi/L. These wells are located just south of the liquid nitrogen storage tanks.

G.

Actions Taken

1.

Compensatory Actions No compensatory actions were taken as a result of the RGPP in 2006.

2.

Installation of Monitoring Wells As discussed above, two new groundwater-monitoring wells (DN-MW-124-1 and 124-S) were installed just south of the liquid nitrogen storage tanks in late 2006. This action was taken to further quantify the plume movement of the 2004 HPCI leak.

Dresden Station has implemented a program to assess the condition of underground lines within the Protected Area. The first lines will be unearthed for testing in the summer of 2007. The results of the RGPP have influenced the priority of the lines being tested.

No other actions were taken with the sample results from the RGPP.

3.

Actions to Recover/Reverse Plumes No actions were taken by Dresden Station if an effort to reverse plume movement.

APPENDIX A LOCATION DISTANCE

APPENDIX A LOCATION DISTANCE

TABLE A-I:

Radiological Groundwater Protection Program - Sampling Locations and Distances, Dresden Nuclear Power Station, 2006 Site Site Type Temporary/Permanent Distance DSP-105 Monitoring Well DSP-106 Monitoring Well DSP-107 Monitoring Well DSP-108 Monitoring Well DSP-1 17 Monitoring Well DSP-118 Monitoring Well DSP-121 Monitoring Well DSP-122 Monitoring Well DSP-123 Monitoring Well DSP-124 Monitoring Well DSP-125 Monitoring Well DSP-126 Monitoring Well DSP-127 Monitoring Well DSP-147 Monitoring Well DSP-148 Monitoring Well DSP-149 Monitoring Well DSP-150 Monitoring Well DSP-151 Monitoring Well DSP-152 Monitoring Well DSP-153 Monitoring Well DSP-154 Monitoring Well DSP-155 Monitoring Well DSP-156 Monitoring Well DSP-157M Monitoring Well DSP-157S Monitoring Well DSP-158 Monitoring Well DSP-158M Monitoring Well DSP-158S Monitoring Well DSP-159 Monitoring Well DSP-159M Monitoring Well DSP-159S Monitoring Well MW-DN-1011 Monitoring Well MW-DN-101S Monitoring Well MW-DN-1021 Monitoring Well MW-DN-102S Monitoring Well MW-DN-1031 Monitoring Well MW-DN-103S Monitoring Well MW-DN-104S Monitoring Well MW-DN-105S Monitoring Well MW-DN-106S Monitoring Well MW-DN-107S Monitoring Well MW-DN-1081 Monitoring Well MW-DN-1091 Monitoring Well MW-DN-109S Monitoring Well MW-DN-1101 Monitoring Well MW-DN-111S Monitoring Well MW-DN-1 11 S Monitoring Well MW-DN-1121 Monitoring Well A-1

TABLE A-i:

Radiological Groundwater Protection Program - Sampling Locations and Distances, Dresden Nuclear Power Station, 2006 Site Site Type Temporary/Permanent Distance MW-DN-1 12S Monitoring Well MW-DN-1 131 Monitoring Well MW-DN-1 13S Monitoring Well MW-DN-1 141 Monitoring Well MW-DN-1 14S Monitoring Well MW-DN-1 151 Monitoring Well MW-DN-115S Monitoring Well MW-DN-1161 Monitoring Well MW-DN-116S Monitoring Well MW-DN-1 171 Monitoring Well MW-DN-1 18S Monitoring Well MW-DN-1 191 Monitoring Well MW-DN-1 19S Monitoring Well MW-DN-1201 Monitoring Well MW-DN-120S Monitoring Well MW-DN-121S Monitoring Well MW-DN-1221 Monitoring Well MW-DN-122S Monitoring Well MW-DN-1231 Monitoring Well MW-DN-123S Monitoring Well SW-DN-101 Surface Water SW-DN-102 Surface Water SW-DN-103 Surface Water SW-DN-104 Surface Water SW-DN-105 Surface Water SW-DN-106 Surface Water SW-DN-107 Surface Water DSP-124 Sewer DSP-131 Sewer DSP-132 Sewer W-2R Sentinel Well W-3 Sentinel Well T-6 Sentinel Well R1 Sentinel Well E-7 Sentinel Well A-2

Intentionally left blank

APPENDIX B DATA TABLES

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DSP-105 DSP-105 ORIG DSP-105 RERUN DSP-106 DSP-106 ORIG DSP-106 RERUN DSP-107 DSP-107 ORIG DSP-107 RERUN DSP-107 ORIG DSP-107 RERUN DSP-1 08 DSP-108 ORIG DSP-108 RERUN DSP-117 DSP-117 DSP-118 DSP-1 18 DSP-121 DSP-121 DSP-122 DSP-122 ORIG DSP-122 RERUN DSP-123 DSP-123 DSP-123 ORIG DSP-123 RERUN DSP-123 ORIG DSP-123 RERUN DSP-124 DSP-124 ORIG DSP-124 RERUN DSP-124 ORIG DSP-124 RERUN DSP-125 DSP-125 ORIG DSP-125 RERUN DSP-126 DSP-126 DSP-127 DSP-127 ORIG DSP-127 RERUN DSP-147 DSP-148 DSP-148 ORIG DSP-148 RERUN DSP-149 ORIG DSP-149 RERUN DSP-149R ORIG DSP-149R DUP DUP DSP-1 50

  • INDICATED DISTILLED SAMPLE DATE 05/23/06 10/20/06 10/20/06 05/23/06 10/20/06 10/20/06 05/23/06 10/24/06 10/24/06 10/24/06 10/24/06 05/24/06 10/24/06 10/24/06 05/26/06 10/23/06 05/25/06 10/20/06 05/26/06 10/20/06 05/25/06 10/24/06 10/24/06 05/26/06 05/26/06 10/24/06 10/24/06 10/24/06 10/24/06 05/26/06 10/23/06 10/23/06 10/23/06 10/23/06 06/01/06 10/24/06 10/24/06 05/24/06 10/18/06 05/30/06 10/23/06 10/23/06 05/30/06 05/30/06 10/23/06 10/23/06 10/23/06 10/23/06 05/31/06 05/31/06 05/24/06 319 +/- 117 428 +/- 121*

302 +/- 123*

2370 +/- 289 2210 +/- 276*

1910 +/- 285*

9820 +/- 1030 5570 +/- 613*

5400 +/- 629*

5100 +/- 586*

5350 +/- 321*

1930 +/- 244 2190 +/- 271" 1780 +/- 271*

< 165

< 147

< 166 191 +/- 108"

  • 165
  • 145 1440 +/- 139 2480 +/- 300*

2400 +/- 335*

13100 +/- 318 13200 +/- 319 14000 +/- 1470*

14900 +/- 1570" 13600 +/- 1430*

13500 +/- 720*

10000 +/- 284 6810 +/- 744*

5860 +/- 673*

6250 +/- 705*

6670 +/- 385*

320 +/- 127 402 +/- 116*

257 +/- 150*

< 163

< 145

< 163 217 +/- 107*

  • 185

< 156 356 +/- 111 209 +/- 101*

  • 172 640 +/- 132*

725 +/- 147*

668 +/- 144 694 +/- 143

  • 161 B-1

TABLE B-1.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DSP-150 DSP-150 DSP-151 DSP-151 DSP-151 DSP-1 52 DSP-152 DSP-153 DSP-153 DSP-154 DSP-154 DSP-155 DSP-155 DSP-155 DSP-156 DSP-156 DSP-1 57 DSP-1 57 DSP-1 57M DSP-1 57S DSP-158 DSP-158 DSP-158M DSP-158S DSP-159 DSP-159 DSP-159 DSP-159M DSP-159S MW-DN-1011 MW-DN-1011 MW-DN-1011 MW-DN-1011 MW-DN-1011 MW-DN-101S MW-DN-101S MW-DN-101S MW-DN-1021 MW-DN-1021 MW-DN-1021 MW-DN-102S MW-DN-102S MW-DN-102S MW-DN-1031 MW-DN-1031 MW-DN-103S MW-DN-103S DUP MW-DN-103S MW-DN-104S MW-DN-104S MW-DN-104S DATE ORIG 10/17/06 RERUN 10/17/06 05/24/06 ORIG 10/17/06 RERUN 10/17/06 05/23/06 10/19/06 05/24/06 10/17/06 05/25/06 10/20/06 05/25/06 ORIG 10/23/06 RERUN 10/23/06 05/30/06 10/23/06 10/19/06 10/20/06 05/23/06 05/23/06 10/19/06 10/19/06 05/25/06 05/25/06 ORIG 10/23/06 RERUN 10/23/06 10/24/06 05/25/06 05/31/06 05/26/06 ORIG 10/20/06 RERUN 10/20/06 ORIG 10/20/06 RERUN 10/20/06 05/26/06 ORIG 10/17/06 RERUN 10/17/06 06/01/06 ORIG 10/18/06 RERUN 10/18/06 06/01/06 ORIG 10/18/06 RERUN 10/18/06 05/26/06 10/18/06 ORIG 05/26/06 DUP 05/26/06 10/18/06 05/30/06 ORIG 10/17/06 RERUN 10/17/06 254 +/- 108"

< 187

< 162 281 +/- 119*

< 186

< 166

< 147

< 158

< 145

< 162

< 147

< 167 233 +/- 119*

< 186 177 +/- 107

< 147

< 148

<. i4,

< 164

< 163

< 149

< 142

< 163

< 159 474 +/- 125" 391 +/- 127"

< 146 531 +/- 131

< 170 4570 +/- 208 2890 +/- 357*

2630 +/- 358*

2960 +/- 373*

2980 +/- 207*

220 +/- 114 265 +/- 119*

< 185 1380 +/- 195 507 +/- 130*

327 +/- 152*

4250 +/- 475 1300 +/- 201*

1290 +/- 227*

< 179

< 176

< 177

< 183

< 178

< 173 1460 +/- 226*

1350 +/- 132*

  • INDICATED DISTILLED SAMPLE B-2

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE MW-DN-105S MW-DN-106S MW-DN-106S MW-DN-107S MW-DN-107S MW-DN-107S MW-DN-1081 MW-DN-1081 MW-DN-1081 DUP MW-DN-1081 MW-DN-1081 MW-DN-1091 MW-DN-1091 DUP MW-DN-1091 MW-DN-1091 MW-DN-109S MW-DN-109S MW-DN-1101 MW-DN-1101 MW-DN-1101 MW-DN-110S MW-DN-111S MW-DN-111S MW-DN-111S MW-DN-1 121 MW-DN-1 121 MW-DN-1 121 MW-DN-1 12S MW-DN-1 12S MW-DN-1 131 MW-DN-1131 DUP MW-DN-1 131 MW-DN-1 13S MW-DN-113S MW-DN-1 13S MW-DN-1 141 MW-DN-1 141 MW-DN-1 141 MW-DN-1 141 MW-DN-1 141 MW-DN-1 14S MW-DN-114S DUP MW-DN-1 14S MW-DN-1 14S MW-DN-1 151 MW-DN-1 151 MW-DN-1 15S MW-DN-115S MW-DN-1 15S MW-DN-1161 MW-DN-1 161 DATE 06/01/06 05/26/06 10/20/06 05/31/06 ORIG 10/17/06 RERUN 10/17/06 05/26/06 ORIG 08/14/06 DUP 08/14/06 ORIG 10/17/06 RERUN 10/17/06 ORIG 05/31/06 DUP 05/31/06 ORIG 10/19/06 RERUN 10/19/06 05/31/06 10/18/06 05130/06 ORIG 10/19/06 RERUN 10/19/06 05/30/06 05/31/06 ORIG 10/23/06 RERUN 10/23/06 08/10/06 ORIG 10/23/06 RERUN 10/23/06 08/10/06 10/17/06 ORIG 08/09/06 DUP 08/09/06 10/23/06 08/09/06 ORIG 10/18/06 RERUN 10/18/06 08/14/06 ORIG 10/19/06 RERUN 10/19/06 ORIG 10/19/06 RERUN 10/19/06 ORIG 08/11/06 DUP 08/11/06 ORIG 10/19/06 RERUN 10/19/06 08/11/06 10/19/06 08/14/06 RERUN 10/19/06 RERUN 10/19/06 08/09/06 ORIG 10/20/06

< 178

< 178

< 194 1040 +/- 165 3190 +/- 395*

3020 +/- 210*

< 176

< 184 210 +/- 124" 1170 +/- 194" 1400 +/- 135*

3620 +/- 413 3750 +/- 424 2740 +/- 35O*

2830 +/- 200*

251 +/- 120

< 193 516 +/- 134 344 +/- 127*

571 +/- 106*

< 172 638 +/-

383 +/-

465 +/-

1520 +/-

1730 +/-

1680 +/-

< 181

< 192

< 182

< 176 140 134*

105*

214" 250*

146*

< 192 451 +/- 136*

439 +/- 138*

492 +/- 132" 4190 +/- 473*

9610 +/- 1040*

9530 +/- 527*

9560 +/- 1040*

9690 +/- 533*

2770 +/- 336*

2740 +/- 335*

2790 +/- 351*

3290 +/- 221*

< 181 191 +/- 121*

< 181 253 +/- 100*

294 +/- 124*

4150 +/- 468*

3950 +/- 518*

  • INDICATED DISTILLED SAMPLE B-3

TABLE B-1.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/-2 SIGMA COLLECTION SITE MW-DN-1 161 MW-DN-116S MW-DN-1 171 MW-DN-1 171 MW-DN-1 171 MW-DN-1 18S MW-DN-1 18S MW-DN-118S MW-DN-1 191 MW-DN-1 191 MW-DN-1 191 MW-DN-1 19S MW-DN-1 19S MW-DN-1201 MW-DN-1201 MW-DN-1201 MW-DN-120S MW-DN-120S MW-DN-121S MW-DN-121S MW-DN-1221 MW-DN-1221 MW-DN-122S MW-DN-122S MW-DN-1231 MW-DN-1231 MW-DN-1231 MW-DN-123S MW-DN-123S SW-1o0 SW-DN-101 SW-DN-102 SW-DN-102 SW-DN-103 SW-DN-103 SW-DN-1 04 SW-DN-104 SW-DN-105 SW-DN-1 05 SW-DN-106 SW-DN-106 SW-DN-107 SW-DN-107 SW-DN-1 07 DATE RERUN 10/20/06 08/09/06 08/10/06 ORIG 10/23/06 RERUN 10/23/06 08/10/06 ORIG 10/23/06 RERUN 10/23/06 08/11/06 ORIG 10/23/06 RERUN 10/23/06 08/11/06 10/18/06 08/08/06 08/08/06 10/20/06 08/08/06 10/20/06 08/08/06 10/21/06 08/08/06 10/19/06 08/08/06 10/18/06 08/08/06 ORIG 10/17/06 RERUN 10/17/06 08/08/06 10/18/06 05/31/06 10/16/06 05/31/06 10/16/06 05/31/06 10/16/06 06/01/06 10/16/06 06/01/06 10/16/06 06/01/06 10/16/06 06/01/06 ORIG 10/17/06 RERUN 10/17/06 4220 +/- 497*

431 +/- 135*

1030 +/- 170" 494 +/- 152*

459 +/- 136*

1650 +/- 227*

1280 +/- 229*

1260 +/- 207*

1470 +/- 211*

3140 +/- 418" 3720 +/- 444*

< 183

< 196

< 180

< 182

< 190

< 181

< 196

< 182

< 160

< 179

< 197

< 181

< 196

< 186 731 +/- 144*

392 +/- 121*

< 183

< 198

< 170

< 194

< 171

< 197

< 171

< 197

< 168

< 197

< 165

< 197

< 168

< 186

< 170 247 +/- 128*

363 +/- 100*

  • INDICATED DISTILLED SAMPLE B-4

TABLE B-I.2 HIGHEST TO LOWEST CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DSP-123 RERUN DSP-123 ORIG DSP-123 ORIG DSP-123 RERUN DSP-123 DSP-123 DSP-124 DSP-107 MW-DN-1141 RERUN MW-DN-1141 ORIG MW-DN-1141 ORIG MW-DN-1141 RERUN DSP-124 ORIG DSP-124 RERUN DSP-124 ORIG DSP-124 RERUN DSP-107 ORIG DSP-107 RERUN DSP-107 RERUN DSP-107 ORIG MW-DN-1011 MW-DN-102S MW-DN-1161 RERUN MW-DN-1 141 MW-DN-1 161 MW-DN-1161 ORIG MW-DN-1091 DUP DUP MW-DN-1191 RERUN MW-DN-1091 ORIG MW-DN-1 14S RERUN MW-DN-107S ORIG MW-DN-1191 ORIG MW-DN-107S RERUN MW-DN-1011 RERUN MW-DN-1011 ORIG MW-DN-1011 ORIG MW-DN-1091 RERUN MW-DN-1 14S ORIG MW-DN-114S ORIG MW-DN-1091 ORIG MW-DN-114S DUP DUP MW-DN-1011 RERUN DSP-122 ORIG DSP-122 RERUN DSP-106 DSP-106 ORIG DSP-108 ORIG DSP-108 DSP-106 RERUN DSP-108 RERUN MW-DN-1121 ORIG

  • INDICATED DISTILLED SAMPLE U DATE 10/24/06 10/24/06 10/24/06 10/24/06 05/26/06 05/26/06 05/26/06 05/23/06 10/19/06 10/19/06 10/19/06 10/19/06 10/23/06 10/23/06 10/23/06 10/23/06 10/24/06 10/24/06 10/24/06 10/24/06 05/26/06 06/01/06 10/20/06 08/14/06 08/09/06 10/20/06 05/31/06 10/23/06 05/31/06 10/19/06 10/17/06 10/23/06 10/17/06 10/20/06 10/20/06 10/20/06 10/19/06 10/19/06 08/11/06 10/19/06 08/11/06 10/20/06 10/24/06 10/24/06 05/23/06 10/20/06 10/24/06 05/24/06 10/20/06 10/24/06 10/23/06 14900 +/- 1570*

14000 +/- 1470*

13600 +/- 1430*

13500 +/- 720*

13200 +/- 319 13100 +/- 318 10000 +/- 284 9820 +/- 1030 9690 +/- 533*

9610 +/- 1040*

9560 +/- 1040*

9530 +/- 527*

6810 +/- 744*

6670 +/- 385*

6250 +/- 705*

5860 +/- 673*

5570 +/- 613*

5400 +/- 629*

5350 +/- 321*

5100 +/- 586*

4570 +/- 208 4250 +/- 475 4220 +/- 497*

4190 +/- 473*

4150 +/- 468*

3950 +/- 518" 3750 +/- 424 3720 +/- 444*

3620 +/- 413 3290 +/- 221*

3190 +/- 395*

3140 +/- 418*

3020 +/- 210*

2980 +/- 207*

2960 +/- 373*

2890 +/- 357*

2830 +/- 200*

2790 +/- 351*

2770 +/- 336*

2740 +/- 350*

2740 +/- 335*

2630 +/- 358*

2480 +/- 300*

2400 +/- 335*

2370 +/- 289 2210 +/- 276*

2190 +/- 271*

1930 +/- 244 1910 +/- 285*

1780 +/- 271*

1730 +/- 250*

B-5

TABLE B-I.2 HIGHEST TO LOWEST CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/-2 SIGMA COLLECTION SITE DATE MW-DN-1121 RERUN 10/23/06 1680 +/- 146*

MW-DN-1 18S 08/10/06 1650 +/- 227*

MW-DN-1121 08/10/06 1520 +/- 214*

MW-DN-1191 08/11/06 1470 +/- 211" MW-DN-104S ORIG 10/17/06 1460 +/- 226*

DSP-122 05/25/06 1440 +/- 139 MW-DN-1081 RERUN 10/17/06 1400 +/- 135*

MW-DN-1021 06/01/06 1380 +/- 195 MW-DN-104S RERUN 10/17/06 1350 +/- 132*

MW-DN-102S ORIG 10/18/06 1300 +/- 201*

MW-DN-102S RERUN 10/18/06 1290 +/- 227*

MW-DN-118S ORIG 10/23/06 1280 +/- 229*

MW-DN-118S RERUN 10/23/06 1260 +/- 207*

MW-DN-1081 ORIG 10/17/06 1170 +/- 194*

MW-DN-107S 05/31/06 1040 +/- 165 MW-DN-1171 08/10/06 1030 +/- 170*

MW-DN-1231 ORIG 10/17/06 731 +/- 144*

DSP-149 RERUN 10/23/06 725 +/- 147*

DSP-149R DUP DUP 05/31/06 694 +/- 143 DSP-149R ORIG 05/31/06 668 +/- 144 DSP-149 ORIG 10/23/06 640 +/- 132*

MW-DN-111S 05/31/06 638 +/- 140 MW-DN-1101 RERUN 10/19/06 571 +/- 106*

DSP-159M 05/25/06 531 +/- 131 MW-DN-1101 05/30/06 516 +/- 134 MW-DN-1021 ORIG 10/18/06 507 +/- 130*

MW-DN-1171 ORIG 10/23/06 494 +/- 152*

MW-DN-113S RERUN 10/18/06 492 +/- 132*

DSP-159 ORIG 10/23/06 474 +/- 125*

MW-DN-111S RERUN 10/23/06 465 +/- 105*

MW-DN-1171 RERUN 10/23/06 459 +/- 136*

MW-DN-113S 08/09/06 451 +/- 136*

MW-DN-113S ORIG 10/18/06 439 +/- 138*

MW-DN-116S 08/09/06 431 +/- 135*

DSP-105 ORIG 10/20/06 428 +/- 121*

DSP-125 ORIG 10/24/06 402 +/- 116*

MW-DN-1231 RERUN 10/17/06 392 +/- 121*

DSP-159 RERUN 10/23/06 391 +/- 127*

MW-DN-111S ORIG 10/23/06 383 +/- 134*

SW-DN-107 RERUN 10/17/06 363 +/- 99.9*

DSP-148 05/30/06 356 +/- 111 MW-DN-1101 ORIG 10/19/06 344 +/- 127*

MW-DN-1021 RERUN 10/18/06 327 +/- 152*

DSP-125 06/01/06 320 +/- 127 DSP-105 05/23/06 319 +/- 117 DSP-105 RERUN 10/20/06 302 +/- 123*

MW-DN-115S RERUN 10/19/06 294 +/- 124*

DSP-151 ORIG 10/17/06 281 +/- 119*

MW-DN-101S ORIG 10/17/06 265 +/- 119*

DSP-125 RERUN 10/24/06 257 +/- 150*

DSP-150 ORIG 10117106 254 +/- 108*

  • INDICATED DISTILLED SAMPLE B-6

TABLE B-I.2 HIGHEST TO LOWEST CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/-2 SIGMA COLLECTION SITE DATE MW-DN-115S RERUN 10/19/06 253 +/- 100*

MW-DN-109S 05/31/06 251 +/- 120 SW-DN-107 ORIG 10/17/06 247 t 128*

DSP-155 ORIG 10/23/06 233 +/- 119" MW-DN-101S 05/26/06 220 +/- 114 DSP-127 ORIG 10/23/06 217 +/- 107*

MW-DN-1081 DUP DUP 08/14/06 210 +/- 124*

DSP-148 ORIG 10/23/06 209 +/- 101" MW-DN-123S 10/18/06

< 198 MW-DN-1221 10/19/06

< 197 SW-DN-102 10/16/06

< 197 SW-DN-103 10/16/06

< 197 SW-DN-104 10/16/06

< 197 SW-DN-105 10/16/06

< 197 MW-DN-119S 10/18/06

< 196 MW-DN-120S 10/20/06

< 196 MW-DN-122S 10/18/06

< 196 MW-DN-106S 10/20/06

< 194 SW-DN-101 10/16/06

< 194 MW-DN-109S 10/18/06

< 193 MW-DN-112S 10/17/06

< 192 MW-DN-1 131 10/23/06

< 192 DSP-118 10/20/06 191 +/- 108*

MW-DN-1151 10/19/06 191 +/- 121" MW-DN-1201 10/20/06

< 190 DSP-150 RERUN 10/17/06

< 187 DSP-151 RERUN 10/17/06

< 186 DSP-155 RERUN 10/23/06

< 186 MW-DN-1231 08/08/06

< 186 SW-DN-106 10/16/06

< 186 DSP-127 RERUN 10/23/06

< 185 MW-DN-101S RERUN 10/17/06

< 185 MW-DN-1081 ORIG 08/14/06

< 184 MW-DN-103S DUP DUP 05/26/06

< 183 MW-DN-119S 08/11/06

< 183 MW-DN-123S 08/08/06

< 183 MW-DN-1131 ORIG 08/09/06

< 182 MW-DN-1201 08/08/06

< 182 MW-DN-121S 08/08/06

< 182 MW-DN-112S 08/10/06

< 181 MW-DN-1151 08/11/06

< 181 MW-DN-115S 08/14/06

< 181 MW-DN-120S 08/08/06

< 181 MW-DN-122S 08/08/06

< 181 MW-DN-1201 08/08/06

< 180 MW-DN-1031 05/26/06

< 179 MW-DN-1221 08/08/06

< 179 MW-DN-103S 10/18/06

< 178 MW-DN-105S 06/01/06

< 178 MW-DN-106S 05/26/06

< 178 DSP-156 05/30/06 177 +/- 107

  • INDICATED DISTILLED SAMPLE B-7

TABLE B-1.2 HIGHEST TO LOWEST CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE MW-DN-103S MW-DN-1031 MW-DN-1081 MW-DN-1131 DUP MW-DN-104S DSP-148 MW-DN-110S SW-DN-102 SW-DN-103 DSP-159S SW-101 SW-DN-107 SW-DN-104 SW-DN-106 DSP-155 DSP-118 DSP-152 DSP-117 DSP-121 SW-DN-105 DSP-157M DSP-126 DSP-127 DSP-157S DSP-158M DSP-151 DSP-154 DSP-150 MW-DN-121S DSP-1 58S DSP-153 DSP-147 DSP-158 DSP-157 DSP-117 DSP-152 DSP-154 DSP-1 56 DSP-157 DSP-159 DSP-121 DSP-126 DSP-153 DSP-1 58 COLLECTION DATE ORIG 05/26/06 10/18/06 05/26/06 DUP 08/09/06 05/30/06 RERUN 10/23/06 05/30/06 05/31/06 05/31/06 05/31/06 05/31/06 06/01/06 06/01/06 06/01/06 05/25/06 05/25/06 05/23/06 05/26/06 05/26/06 06/01/06 05/23/06 05/24/06 05/30/06 05/23/06 05/25/06 05/24/06 05/25/06 05/24/06 10/21/06 05/25/06 05/24/06 05/30/06 10/19/06 10/19/06 10/23/06 10/19/06 10/20/06 10/23/06 10/20/06 10124/06 10/20/06 10/18/06 10/17/06 10/19/06

  • 177
  • 176
  • 176
  • 176
  • 173
  • 172
  • 172

< 171

  • 171
  • 170
  • 170
  • 170
  • 168
  • 168
  • 167
  • 166
  • 166
  • 165
  • 165
  • 165
  • 164
  • 163
  • 163
  • 163
  • 163
  • 162
  • 162
  • 161
  • 160
  • 159
  • 158
  • 156
  • 149
  • 148
  • 147
  • 147
  • 147
  • 147
  • 146
  • 146
  • 145
  • 145
  • 145
  • 142
  • INDICATED DISTILLED SAMPLE B-8

TABLE B-I.3 CONCENTRATIONS OF TRITIUM IN SENTINEL WELL AND SEWER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE E-7 04/10/06 E-7 04/14/06 E-7 04/24/06 E-7 05/04/06 E-7 05/08/06 E-7 05/11/06 E-7 05/15/06 E-7 05/18/06 E-7 05/25/06 E-7 06/02/06 E-7 06/05/06 E-7 06/08/06 E-7 06/15/06 E-7 06/19/06 E-7 07/06/06 E-7 07/11/06 E-7 07/25/06 E-7 07/31/06 E-7 08/07/06 E-7 08/23/06 E-7 08/31/06 E-7 09/07/06 E-7 09/12/06 E-7 09/22/06 E-7 09/29/06 E-7 10/03/06 E-7 10/16/06 E-7 10/26/06 E-7 11/03/06 E-7 11/09/06 E-7 12/03/06 E-7 12/15/06 E-7 12/27/06 H-3 1,800 300 400 1,100 900 700 500 900 700 300 300 1,200 300 400 500 800 1,100 1,950 1,000 200 200 200 200 500 0

1,100 300 1,600 500 1,100 200 300 1,000 COLLECTION SITE DATE R-1 07/14/06 R-1 07/17/06 R-1 07/25/06 R-1 07/31/06 R-1 08/07/06 R-1 08/15/06 R-1 08/23/06 R-1 09/12/06 R-1 09/22/06 R-1 09/29/06 R-1 11/03/06 R-1 11/09/06 R-1 12/03/06 R-1 12/13/06 R-1 12/15/06 R-1 12/27/06 H-3 9,300 12,000 19,000 2,650 1,700 6,500 3,000 6,100 1,500 60,000 31,000 19,000 600 21,000 25,000 21,200 COLLECTION SITE DATE T-6 01/03/06 T-6 01/31/06 T-6 02/12/06 1

T-6 02/13/06 1

T-6 02/14/06 1

T-6 02/15/06 1

T-6 02/16/06 1

T-6 02/17/06 T-6 02/18/06 T-6 02/19/06 T-6 02/20/06 T-6 02/23/06 T-6 04/13/06 2

T-6 04/14/06 2

T-6 04/17/06 1

T-6 04/19/06 1

T-6 04/21/06 T-6 04/21/06 T-6 04/24/06 1

T-6 04/27/06 1

T-6 05/04/06 T-6 05/08/06 T-6 05/15/06 T-6 05/18/06 T-6 05/25/06 1

T-6 06/02/06 T-6 06/05/06 1

T-6 06/08/06 1

T-6 06/15/06 1

T-6 06/19/06 T-6 07/06/06 T-6 07/14/06 T-6 07/17/06 T-6 07/25/06 T-6 07/31/06 T-6 08/03/06 T-6 08/07/06 T-6 08/15/06 T-6 08/23/06 T-6 09/12/06 T-6 09/18/06 T-6 10/06/06 T-6 10/16/06 T-6 11/03/06 T-6 11/09/06 T-6 12/27/06 H-3 SITE DATE 17,000 W-3 01/03/06 86,000 W-3 01/31/06 24,000 W-3 03/08/06 31,800 W-3 04/03/06 34,300 W-3 04/04/06 28,300 W-3 04/07/06 02,300 W-3 04/20/06 11,200 W-3 04/21/06 24,800 W-3 04/24/06 48,300 W-3 04/27/06 56,000 W-3 05/08/06 35,000 W-3 05/11/06 20,000 W-3 05/15/06 20,000 W-3 05/18/06 10,000 W-3 05/25/06 90,000 W-3 06/01/06 9,800 W-3 06/05/06 5,800 W-3 06/08/06 70,000 W-3 06/15/06 30,000 W-3 06/19/06 39,000 W-3 07/06/06 64,000 W-3 07/11/06 9,100 W-3 07/17/06 5,100 W-3 07/31/06 60,000 W-3 08/02/06 22,000 W-3 08/03/06 40,000 W-3 08/07/06 60,000 W-3 08/23/06 20,000 W-3 09/18/06 86,000 W-3 09/29/06 3,900 W-3 10/04/06 13,000 W-3 10/10/06 7,300 W-3 10/16/06 7,000 W-3 10/27/06 5,150 W-3 11/02/06 5,800 W-3 11/10/06 4,700 W-3 12/03/06 5,000 W-3 12/15/06 3,800 W-3 12/27/06 81,000 W-3 11,000 W-3 52,000 W-3 36,000 W-3 1,700 W-3 2,800 W-3 1,700 W-3 COLLECTION H-3 7,000 21,000 66,800 120,600 159,200 224,200 224,500 228,700 110,000 265,000 220,000 280,000 98,000 52,000 180,000 70,000 65,000 250,000 13,000 180,000 140,000 80,000 66,000 18,000 19,000 31,000 41,000 29,000 6,300 26,000 38,000 49,000 54,000 36,000 39,000 34,000 27,000 21,000 27,000 B-9

TABLE B-I.3 CONCENTRATIONS OF TRITIUM IN SENTINEL WELL SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE COLLECTION H-3 SITE DATE COLLECTION H-3 SITE DATE COLLECTION H-3 SITE DATE H-3 W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R W-2R U 1/U3/0U 01/31/06 02/13/06 03/30/06 03/31/06 04/01/06 04/02/06 04/03/06 04/04/06 04/05/06 04/06/06 04/07/06 04/08/06 04/09/06 04/10/06 04/14/06 04/17/06 04/19/06 04/24/06 04/27/06 05/04/06 05/08/06 05/11/06 05/15/06 05/18/06 05/25/06 06/01/06 06/05/06 06/08/06 06/15/06 06/19/06 07/06/06 07/11/06 07/17/06 07/25/06 07/31/06 08/02/06 08/03/06 08/07/06 08/23/06 09/18/06 09/29/06 10/04/06 10/10/06 10/16/06 10/27/06 11/02/06 11/10/06 12/03/06 12/27/06 93,UUU 60,000 63,800 99,400 97,100 123,400 121,200 121,400 104,300 105,800 88,200 120,600 141,100 155,600 103,500 91,000 88,000 93,000 61,000 84,000 53,000 67,000 87,000 47,000 28,000 49,000 20,000 27,000 39,000 290,000 46,000 17,000 19,000 14,000 8,300 16,000 16,000 15,000 11,000 9,800 9,000 20,000 33,000 36,000 35,000 19,000 17,000 8,800 3,600 3,900 DSP-124 02/17/06 DSP-124 02/17/06 DSP-124 02/18/06 DSP-124 02/19/06 DSP-124 02/201/06 DSP-124 02/21/06 DSP-124 02/22/06 DSP-124 02123/06 DSP-124 04/13/06 DSP-124 04/14/06 DSP-124 04/24/06 DSP-124 04/27/06 DSP-124 05/04/06 DSP-124 05/1081/06 DSP-124 05/11/06 DSP-124 05/15/06 DSP-124 05/18/06 DSP-124 05/125/06 DSP-124 06/01/06 DSP-124 06/105/06 DSP-124 06/15/06 DSP-124 06/19/06 DSP-124 07/1061/06 DSP-124 07/11/06 DSP-124 07/17/06 DSP-124 07/25/06 DSP-124 07/31/06 DSP-124 08071/06 DSP-124 09/18/06 DSP-124 09/29/06 DSP-124 10/104/06 DSP-124 10/10/06 DSP-124 10/16/06 DSP-124 10/23/06 DSP-124 10/27/06 DSP-124 11/02/06 DSP-124 11/09/06 DSP-124 12/03/06 DSP-124 12/13/06 DSP-124 12/27/06 9,3UU 12,000 12,200 10,300 9,800 9,500 11,100 9,700 8,000 8,200 3,700 3,500 3,000 2,400 3,500 3,700 3,300 5,800 12,000 14,000 15,000 15,000 14,000 12,000 11,000 11,000 10,000 11,000 11,000 9,400 8,000 6,900 9,300 5,600 6,100 6,300 8,867 10,000 13,000 16,000 UDP-131 U4/13/0U DSP-131 04/17/06 DSP-131 04/24/06 DSP-131 04/27/06 DSP-131 05/04/06 DSP-131 05/08/06 DSP-131 05/11/06 DSP-131 05/15/06 DSP-131 05/18/06 DSP-131 05/25/06 DSP-131 06/01/06 DSP-131 06/05/06 DSP-131 06/08/06 DSP-131 06/15/06 DSP-131 06/19/06 DSP-131 07/06/06 DSP-131 07/11/06 DSP-131 07/17/06 DSP-131 07/25/06 DSP-131 07/31/06 DSP-131 07/31/06 DSP-131 08/07/06 DSP-131 08/15/06 DSP-131 08/23/06 DSP-131 08/31/06 DSP-131 09/07/06 DSP-131 09/12/06 DSP-131 09/22/06 DSP-131 09/29/06 DSP-131 10/03/06 DSP-131 10/10/06 DSP-131 10/16/06 DSP-131 10/26/06 DSP-131 10/31/06 DSP-131 11/09/06 DSP-131 12/15/06 DSP-131 12/27/06

,000 DSP-132 03/103/06 1,000 DSP-132 04/13/06 800 DSP-132 04/17/06 800 DSP-132 04/24/06 1,100 DSP-132 04/27/06 500 DSP-132 05/04/06 1,200 DSP-132 05/08/06 460 DSP-132 05/11/06 500 DSP-132 05/15/06 1,100 DSP-132 05/18/06 900 DSP-132 05/25/06 700 DSP-132 06/01/06 900 DSP-132 06/05/06 700 DSP-132 06/08/06 700 DSP-132 06/15/06 500 DSP-132 06/19/06 700 DSP-132 07/06/06 700 DSP-132 07/11/06 1,100 DSP-132 07/17/06 900 DSP-132 07/25/06 800 DSP-132 07/31/06 1,000 DSP-132 08/03/06 700 DSP-132 08/07106 600 DSP-132 08/15/06 600 DSP-132 08/23/06 900 DSP-132 08/31/06 500 DSP-132 09/07/06 300 DSP-132 09/12/06 200 DSP-132 09/22/06 1,100 DSP-132 09/29/06 500 DSP-132 10/03/06 400 DSP-132 10/10/06 300 DSP-132 10/16/06 400 DSP-132 10/23/06 300 DSP-132 10/31/06 700 DSP-132 11/09/06 100 DSP-132 12/02/06 DSP-132 12/27/06 710 700 1,000 600 1,100 1,100 600 300 460 300 500 600 500 700 700 600 1,700 700 1,100 1,100 750 500 1,000 900 600 800 700 600 700 400 1,100 500 600 400 900 900 400 200 B-10

TABLE B-I.4 CONCENTRATIONS OF STRONTIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION DATE SITE DSP-151 DSP-155 MW-DN-1081 MW-DN-1081 MW-DN-1081 MW-DN-1 081 MW-DN-1081 DUP MW-DN-1081 DUP MW-DN-1081 ORIG ORIG RERUN DUP DUP RERUN 10/17/06 05/25/06 05/26/06 05/26/06 08/14/06 08/14/06 08/14/06 08/14/06 10/17/06 2.6 0.7 4.4 3.4 3.2 3.5 2.7 4.2 2.7

+/- 0.7

+/- 0.4

+/- 1.2

+/- 0.8

+/- 1.0

+/- 0.6

+/- 1.0

+/- 0.9

+/- 1.2 B-11

TABLE B-I.5 HIGHEST TO LOWEST CONCENTRATIONS OF STRONTIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION DATE SITE MW-DN-1081 MW-DN-1081 DUP MW-DN-1081 MW-DN-1081 MW-DN-1081 MW-DN-1081 DUP MW-DN-1081 DSP-151 DSP-155 05/26/06 DUP RERUN 08/14/06 ORIG RERUN 08/14/06 05/26/06 ORIG 08/14/06 DUP 08/14/06 10/17/06 10/17/06 05/25/06 4.4 4.2 3.5 3.4 3.2 2.7 2.7 2.6 0.7

+/- 1.2

+/- 0.9

+/- 0.6

+/- 0.8

+/- 1.0

+ 1.0

+/- 1.2

+/- 0.7

+/- 0.4 B - 12

TABLE B-1.6 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER 12 SIGMA COLLECTION DATE SITE DSP-118 DSP-121 DSP-122 DSP-123 DSP-126 DSP-127 DSP-149 DSP-154 DSP-156 DSP-158M DSP-159 MW-DN-1011 MW-DN-1 02S MW-DN-102S MW-DN-103S MW-DN-106S MW-DN-107S MW-DN-107S MW-DN-1081 MW-DN-1091 MW-DN-111S MW-DN-1 131 MW-DN-113S MW-DN-1151 MW-DN-115S MW-DN-1 171 MW-DN-1201 MW-DN-120S MW-DN-121S MW-DN-1221 MW-DN-1221 SW-DN-103 SW-DN-105 SW-DN-105 BE-7 K-40 10/20/06 05/26/06 05/25/06 05/26/06 05/24/06 05/30/06 10/23/06 05/25/06 05/30/06 05/25/06 10/23/06 05/26/06 06/01/06 10/18/06 101/8/06 10/20/06 05/31/06 10/17/06 05126/06 10/19/06 10/23/06 08/09/06 10/18/06 10/19/06 10/19/06 10/23/06 08/08/06 08/08/06 10/21/06 08/08/06 10/19/06 10/16/06 06/01/06 10/16/06 57 +/- 38 64 +/- 46 59 +/- 53 75 +/- 49 64 +/- 42 38 +/- 35 50 +/- 43 68 +/- 51 68 +/- 46 165 +/- 26 82 +/- 51 45 +/- 38 44 +/- 36 89 +/- 56 110 +/- 48 69 +/- 52 43 +/- 34 44 +/- 35 78 +/- 68 62 +/- 51 60 +/- 36 54 +/- 36 76 +/- 28 53 +/- 52 90 +/- 53 103 +/- 50 55 +/- 44 36 +/- 25 104 +/- 48 118 +/- 70 119 +/- 77 84 +/- 43 332 +/- 55 CO-60 4+/-3 B - 13

TABLE B-I.7 HIGHEST TO LOWEST CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF DRESDEN NUCLEAR POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE SW-DN-105 DSP-1 58M SW-DN-103 MW-DN-1221 MW-DN-103S MW-DN-1221 MW-DN-1201 MW-DN-1 171 MW-DN-102S SW-DN-105 DSP-159 MW-DN-1091 MW-DN-1151 DSP-123 MW-DN-106S DSP-156 DSP-154 DSP-126 DSP-121 MW-DN-111S MW-DN-1 131 DSP-122 DSP-118 MW-DN-120S MW-DN-113S MW-DN-115S DSP-149 MW-DN-1011 MW-DN-102S MW-DN-1081 MW-DN-107S DSP-127 MW-DN-121S MW-DN-107S COLLECTION DATE 10/16/06 05/25/06 10/16/06 10/19/06 10/18/06 08/08/06 08108/06 10/23/06 10/18/06 06/01/06 10/23/06 10/19/06 10/19/06 05/26/06 10/20/06 05/30/06 05/25/06 05/24/06 05/26/06 10/23/06 08/09/06 05/25/06 10/20/06 08/08/06 10/18/06 10/19/06 10/23/06 05/26/06 06/01/06 05/26/06 05/31/06 05/30/06 10/21/06 10/17/06 K-40 332 +/- 55 165 +/- 26 119 +/- 77 118 +/- 70 110 +/- 48 104 +/- 48 103 +/- 50 90 +/- 53 89 +/- 56 84 +/- 43 82 +/- 51 78 +/- 68 76 +/- 28 75 +/- 49 69 +/- 52 68 +/- 46 68 +/- 51 64 +/- 42 64 +/- 46 62 +/- 51 60 +/- 36 59 +/- 53 57 +/- 38 55 +/- 44 54 +/- 36 53 +/- 52 50 +/- 43 45 +/- 38 44 +/- 36 44 +/- 35 43 +/- 34 38 +/- 35 36 +/- 25 CO-60 4+/-

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