ML081430031

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Annual Radiological Environmental Operating Report
ML081430031
Person / Time
Site: Braidwood  Constellation icon.png
Issue date: 05/15/2008
From: Bryan Hanson
Exelon Generation Co, Exelon Nuclear
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
BW080049, FOIA/PA-2010-0209
Download: ML081430031 (248)
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Text

Exelon Generation Company, LLC www.exeloncorp.com Exelon Braidwood Station Nucear 35100 South Route 53, Suite 84 Braceville, IL 60407-9619 May 15, 2008 BW080049 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555-0001 Braidwood Station, Units 1 and 2 Facility Operating License Nos. NPF-72 and NPF-77 NRC Docket Nos. STN 50-456 and STN 50-457

Subject:

2007 Annual Radiological Environmental Operating Report Attached is the 2007 Annual Radiological Environmental Operating Report for Braidwood Station. This report is being submitted in accordance with Technical Specification 5.6.2, "Annual Radiological Environmental Operating Report." This report contains information associated with the station's radiological environmental and meteorological monitoring programs. This information is consistent with the objectives described in the Offsite Dose Calculation Manual and 10 CFR 50, Appendix I, "Numerical Guides for Design Objectives and Limiting Conditions for Operation to Meet the Criterion 'As Low as is Reasonably Achievable' for Radioactive Material In Light-Water-Cooled Nuclear Power Reactor Effluents," Sections IV.B.2, and IV.B.3. Technical Specification 5.6.2 requires the Annual Radiological Environmental Operating Report to be submitted by May 15 of each year.

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

Respectfully, Bryan Hanson Site Vice President Braidwood Station

Attachment:

2007 Annual Radiological Environmental Operating Report

cc: Region Administrator - NRC Region III Illinois Emergency Management Agency - Division of Nuclear Safety (report only)

Vice President - Regulatory and Legal Affairs (w/o attachments)

Director, Licensing and Regulatory Affairs (w/o attachments)

Regulatory Assurance Manager - Braidwood Station (w/o attachments)

Manager, Licensing - Braidwood, Byron and LaSalle County Stations (w/o attachments)

Braidwood Nuclear Licensing Administrator (w/o attachments)

Exelon Document Control Desk Licensing (report only)

Docket No: 50-456 50-457 BRAIDWOOD STATION UNITS I and 2 Annual Radiological Environmental Operating Report 1 January Through 31 December 2007 Prepared By Teledyne Brown Engineering Environmental Services Nuclear Braidwood Station Braceville, IL 60407 May 2008

Table Of Contents

1. Summary and Conclusions.....................................................................I 11.Introduction ..................................................................................... 3 A. Objectives of the REMP............................................................... 3 B. Implementation of the Objectives..................................................... 3 111.Program Description........................................................................... 3 A. Sample Collection...................................................................... 3 B. Sample Analysis ....................................................................... 5 C. Data Interpretation..................................................................... 6 D. Program Exceptions................................................................... 7 E. Program Changes.................................................................... 10 IV. Results and Discussion ..................................................................... 10 A. Aquatic Environment................................................................. 10
1. Surface Water................................................................. 10
2. Public Water .................................................................. 11
3. Ground/well Water............................................................ 12
4. Fish ............................................................................ 12
5. Sediment ...................................................................... 12 B. Atmospheric Environment ........................................................... 13
1. Airborne ....................................................................... 13
a. Air Particulates........................................................ 13
b. Airborne Iodine........................................................ 14
2. Terrestrial...................................................................... 14
a. Milk .................................................................... 14
b. Food Products ........................................................ 14 C. Ambient Gamma Radiation.......................................................... 15 D. Land Use Survey..................................................................... 15 E. Summary of Results - Inter-laboratory Comparison Program .................... 16

Appendices Appendix A Radiological Environmental Monitoring Report Summary Tables Table A-1 Radiological Environmental Monitoring Program Summary for the Braidwood Station, 2007 Appendix B Location Designation, Distance & Direction, and Sample Collection &

Analytical Methods Tables Table B-I: Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Braidwood Station, 2007 Table B-2: Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Braidwood Station, 2007 Figur~es Figure B-l: Inner Ring TLD Locations of the Braidwood Station, 2007 Figure B-2: Fixed Air Sampling and Outer Ring TLD Locations of the Braidwood Station, 2007 Figure B-3: Ingestion and Waterborne Exposure Pathway Sample Locations of the Braidwood Station, 2007 Appendix C Data Tables and Figures - Primary Laboratory Tables Table C-1.1 Concentrations of Gross Beta in Surface Water Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-1.2 Concentrations of Tritium in Surface Water Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-1.3 Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-11.1 Concentrations of Gross Beta in Public Water Samples Collected in the Vicinity of Braidwood Station, 2007.

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Table C-11.2 Concentrations of Tritium in Public Water Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-11.3 Concentrations of Gamma Emitters in Public Water Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-111.1 Concentrations of Tritium in Ground/well Water Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-111.2 Concentrations of Gamma Emitters in Ground/well Water Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-IV.1 Concentrations of Gamma Emitters in Fish Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-V.1 Concentrations of Gamma Emitters in Sediment Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-VI.1 Concentrations of Gross Beta in Air Particulate Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-VI.2 Monthly and Yearly Mean Values of Gross Beta Concentrations (E-3 pCi/cu meter) in Air Particulate Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-VI.3 Concentrations of Gamma Emitters in Air Particulate Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-VII.1 Concentrations of 1-131 in Air Iodine Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-VIII.1 Concentrations of 1-131 in Milk Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-VIII.2 Concentrations of Gamma Emitters in Milk Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-IX.1 Concentrations of Gamma Emitters in Vegetation Samples Collected in the Vicinity of Braidwood Station, 2007.

Table C-X.1 Quarterly TLD Results for Braidwood Station, 2007.

Table C-X.2 Mean Quarterly TLD Results for the Site Boundary, Middle and Control Locations for Braidwood Station, 2007.

Table C-X.3 Summary of the Ambient Dosimetry Program for Braidwood Station, 2007.

Figures Figure C-1 Surface Water - Gross Beta - Stations BD-10 and BD-25 (C) Collected in the Vicinity of Braidwood Station, 2000 - 2007.

Figure 0-2 Surface Water - Gross Beta - Stations BD-38 and BD-40 Collected in the Vicinity of Braidwood Station, 2000 - 2007.

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

Figure C-4 Surface Water - Tritium - Stations BD-10 and BD-25 (C) Collected in the Vicinity of Braidwood Station, 2000 - 2007.

Figure C-5 Surface Water - Tritium - Stations BD-38 and BD-40 Collected in the Vicinity of Braidwood Station, 2000 - 2007.

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

Figure C-7 Public Water - Gross Beta - Station BD-22 Collected in the Vicinity of Braidwood Station, 2000 - 2007.

Figure C-8 Public Water - Tritium - Station BD-22 Collected in the Vicinity of Braidwood Station, 2000 - 2007.

Figure C-9 Well Water - Tritium - Stations BD-1 3 and BD-34 Collected in the Vicinity of Braidwood Station, 2000 - 2007.

Figure C-10 Well Water - Tritium - Stations BD-35 and BD-36 Collected in the Vicinity of Braidwood Station, 2000 - 2007.

Figure C-11 Well Water - Tritium - Station BD-37 Collected in the Vicinity of Braidwood Station, 2000 - 2007.

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

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

Figure C-14 Air Particulate - Gross Beta - Stations BD-03 (C) and BD-06 Collected in the Vicinity of Braidwood Station, 2000 - 2007.

Figure C-15 Air Particulate - Gross Beta - Stations BD-19 and BD-20 Collected in the Vicinity of Braidwood Station, 2000 - 2007.

Figure C-16 Air Particulate - Gross Beta - Station BD-21 Collected in the Vicinity of Braidwood Station, 2000 - 2007.

Figure C-17 Air Particulate - Gross Beta - Station BD-02 and BD-04 Collected in the Vicinity of Braidwood Station, 2007.

Figure C-18 Air Particulate - Gross Beta - Station BD-05 Collected in the Vicinity of Braidwood Station, 2007.

Appendix D Inter-Laboratory Comparison Program Tables Table D-1 Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2007 iv

Table D-2 ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2007 Table D-3 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Teledyne Brown Engineering, 2007 Table D-4 ERA Statistical Summary Proficiency Testing Program for Environmental, Inc., 2007 Table D-5 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Environmental, Inc., 2007 Appendix E Effluent Report Appendix F Meteorological Data Appendix G Annual Radiological Groundwater Protection Program Report (ARGPPR) v

I. Summary and Conclusions This report on the Radiological Environmental Monitoring Program conducted for the Braidwood Station by Exelon covers the period 1 January 2007 through 31 December 2007. During that time period, 1,566 analyses were performed on 1344 samples. In assessing all the data gathered for this report and comparing these results with preoperational data, it was concluded that the operation of Braidwood Station had no adverse radiological impact on the environment.

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

Fish (commercially and/or recreationally important species) and sediment samples were analyzed for concentrations of gamma emitting nuclides. No fission or activation products were detected in fish. Sediment samples had Cesium-137 concentrations consistent with levels observed during the preoperational years. No plant produced fission or activation products were found in sediment.

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

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

Cow milk samples were analyzed for concentrations of 1-131 and gamma emitting nuclides. All 1-131 results were below the minimum detectable activity.

Concentrations of naturally occurring K-40 were detected. No fission or activation products were found.

Food Product samples were analyzed for concentrations of gamma emitting nuclides. Cesium-137 was detected in two samples at low concentrations, probably from the soil attached to the food products. No plant produced fission or activation products were detected.

Environmental gamma radiation measurements were performed quarterly using thermoluminescent dosimeters. Levels detected were consistent with those observed in previous years.

1

Intentionally left blank 2

II. Introduction The Braidwood Station, consisting of two 3587 MWt pressurized water reactors owned and operated by Exelon Corporation, is located in Will County, Illinois.

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

This report covers those analyses performed by Teledyne Brown Engineering (TBE), Global Dosimetry, and Environmental Inc. (Midwest Labs) on samples collected during the period 1 January 2007 through 31 December 2007.

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

1. Provide data on measurable levels of radiation and radioactive materials in the site environs.
2. Evaluate the relationship between quantities of radioactive material released from the plant and resultant radiation doses to individuals from principal pathways of exposure.

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

1. Identifying significant exposure pathways.
2. Establishing baseline radiological data of media within those pathways.
3. Continuously monitoring those media before and during Station operation to assess Station radiological effects (if any) on man and the environment.

Ill. Program Description A. Sample Collection Samples for the Braidwood Station REMP were collected for Exelon Nuclear by Environmental Inc. (Midwest Labs). This section describes the general collection methods used by Environmental Inc. (Midwest Labs) to obtain environmental samples for the Braidwood Station REMP in 2007.

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

Aquatic Environment The aquatic environment was evaluated by performing radiological analyses on samples of surface water, public water, well water, fish, and sediment. Two gallon water samples were collected weekly from six surface water locations (BD-10, BD-25 [control], BD-38, BD-40, BD-55 and BD-56) and one weekly composite sample of public drinking water location (BD-22) and ground/well water samples collected quarterly from nine locations (BD-13, BD-34, BD-35, BD-36, BD-37, BD-50, BD-51, BD-53 and BD-54). All samples were collected in new unused plastic bottles, which were rinsed with source water prior to collection. Fish samples comprising the flesh of largemouth bass, smallmouth bass, rock bass, golden redhorse, channel catfish, bluegill and carp were collected semiannually at three locations, BD-25 (control), BD-28, and BD-41.

Sediment samples composed of recently deposited substrate were collected at two locations semiannually, BD-10 and BD-57.

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

Milk samples were collected biweekly at two locations (BD-1 7 and BD-1 8) from May through October, and monthly from November through April.

The control location was BD-1 8. All samples were collected in new unused two gallon plastic bottles from the bulk tank at each location, preserved with sodium bisulfite, and shipped promptly to the laboratory.

Food products were collected annually in September at five locations (BD-C, BD-Quad 1, BD-Quad 2, BD-Quad 3, and BD-Quad 4). The control location was BD-C. Various types of samples were collected and placed in new unused plastic bags, and sent to the laboratory for analysis.

Ambient Gamma Radiation Direct radiation measurements were made using dual calcium fluoride and lithium flouride thermoluminescent dosimeters (TLD). Each location consisted of 2 TLD sets. The TLDs were exchanged quarterly and sent to Global Dosimetry for analysis. The TLDs were placed at locations on and around the Braidwood Station site as follows:

An inner ring (site boundary) consisting of 16 locations (BD-101, BD-102, BD-103, BD-104, BD-105, BD-106, BD-107, BD-108, BD-109, BD-110, BD-111a, BD-112, BD-113a, BD-114, BD-115 and BD-116) near and within the site perimeter representing fence post doses (i.e., at locations where the doses will be potentially greater than maximum annual off-site doses) from Braidwood Station release.

An o.uter.ring (intermediate distance) consisting of 16 locations (BD-201, BD-202, BD-203, BD-204, BD-205, BD-206, BD-207, BD-208, BD-209, BD-210, BD-211, BD-212, BD-213, BD-214, BD-215, BD-216) extending to approximately 5 miles from the site designed to measure possible exposures to close-in population.

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

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

The specific TLD locations were determined by the following criteria:

1. The presence of relatively dense population;
2. Site meteorological data taking into account distance and elevation for each of the sixteen-22 1/2 degree sectors around the site, where estimated annual dose from Braidwood Station, if any, would be most significant; B. Sample Analysis This section describes the general analytical methodologies used by TBE and Environmental Inc. (Midwest Labs) to analyze the environmental samples for radioactivity for the Braidwood Station REMP in 2007. The analytical procedures used by the laboratories are listed in Table B-2.

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

1. Concentrations of beta emitters in public and surface water and air particulates.
2. Concentrations of gamma emitters in public, ground/well and surface water, air particulates, milk, fish, sediment and food products.
3. Concentrations of tritium in public, ground/well and surface water.
4. Concentrations of 1-131 in air and milk.
5. Ambient gamma radiation levels at various site environs.

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

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

The minimum detectable concentration (MDC) is defined above with the exception that the measurement is an after the fact estimate of the presence of activity.

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

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

For surface, public and ground/well water 12 nuclides, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, 1-131, Cs-134, Cs-137, Ba-140, and La-1 40 were reported.

For fish, sediment, air particulate, milk and vegetation 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.

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

D. Program Exceptions For 2007 the Braidwood Station REMP had a sample recovery rate in excess of 99%. Sample anomalies and missed samples are listed in the tables below:

Table D-1 LISTING OF SAMPLE ANOMALIES Sample Location Collection Reason Type Code Date A/I BD-02, BD-03 05/17/07 No apparent reason for low timer BD-04, BD-20 reading; possible power outage.

BD-21 A/I BD-02, BD-03 05/24/07 No apparent reason for low timer BD-04, BD-20 reading; possible power outage.

BD-21 A/I BD-02, BD-03 05/31/07 No apparent reason for low timer BD-04, BD-20 reading; possible power outage.

BD-21 A/I BD-02, BD-03 06/07/07 No apparent reason for low timer BD-04, BD-20 reading; possible power outage.

BD-21 Table D-1 LISTING OF SAMPLE ANOMALIES (continued)

Sample Location Collection Reason Type Code Date A/I BD-02, BD-03 06/14/07 No apparent reason for low timer BD-04, BD-20 reading; possible power outage.

BD-21 A/I BD-02, BD-03 06/21/07 No apparent reason for low timer BD-04, BD-20 reading; possible power outage.

BD-21 A/I BD-02, BD-03 06/28/07 No apparent reason for low timer BD-04, BD-20 reading; possible power outage.

BD-21 A/I BD-02, BD-03 07/05/07 No apparent reason for low timer BD-04, BD-20 reading; possible power outage.

BD-21 A/I BD-02, BD-03 08/30/07 Low reading due to power outages BD-06, BD-19 from storm.

BD-20, BD-21 A/I BD-05 09/21/07 Work being done at substation; sample taken from portable substation.

A/I BD-04 12/20/07 No apparent reason for low timer reading.

Table D-2 LISTING OF MISSED SAMPLES Sample Location Collection Reason Type Code Date WT BD-38 02/15/07 No samples. Water frozen.

WT BD-55 02/15/07 No samples. Water frozen.

WT BD-56 02/15/07 No samples. Water frozen.

WT BD-38 02/22/07 No samples. Water frozen.

WT BD-55 02/22/07 No samples. Water frozen.

Table D-2 LISTING OF MISSED SAMPLFS (continued)

Sample Location Collection Reason Type Code Date WT BD-56 02/22/07 No samples. Water frozen.

WT BD-55 03/01/07 No samples. Water frozen.

WT BD-56 03/01/07 No samples. Water frozen.

WT BD-55 03/07/07 No samples. Water frozen.

WT BD-56 03/07/07 No samples. Water frozen.

WG BD-50 04/12/07 No samples. Homeowner refused sample collector. Off schedule until further notice.

WG BD-52 04/12/07 No sample. Well no longer active.

WG BD-50 07/12/07 No samples. Water Homeowner refused sample collector.

WG BD-34 10/11/07 No sample for the quarter, homeowner away for the entire quarter.

WG BD-50 10/11/07 No samples. Water Homeowner refused sample collector.

A/I BD-05 11/01/07 No sample. Sample equipment inside a power line repair zone, sample collector denied access due to industrial safety concerns.

A/I BD-05 11/08/07 No sample. Sample equipment inside a power line repair zone, sample collector denied access due to industrial safety concerns.

SW BD-55 12/06/07 No samples. Water frozen.

SW BD-56 12/06/07 No samples. Water frozen.

SW BD-55 12/13/07 No samples. Water frozen.

SW BD-56 12/13/07 No samples. Water frozen.

Table D-2 LISTING OF MISSED SAMPLES (continued)

Sample Location Collection Reason Type Code Date SW BD-56 12/20/07 No samples. Water frozen.

SW BD-56 12/27/07 No samples. Water frozen.

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

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

E. Program Changes Groundwater station BD-52 was removed from the Radiological Environmental Monitoring Program in 2007 due to the well being abandoned and closed.

Starting in 2007, the mean and two standard deviation values are calculated using the positive values only.

IV. Results and Discussion A. Aquatic Environment

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

GrossBeta Samples from all locations were analyzed for concentrations of gross beta (Table C-I.1, Appendix C). Gross beta was detected in all the samples. The values ranged from 2.3 to 15 pCi/I.

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

Quarterly composites of weekly collections were analyzed for tritium activity (Table C-1.2, Appendix C). Tritium activity was detected in three samples and ranged from 219 to 585 pCi/L.

Concentrations detected were consistent with those detected in previous years (Figures C-4 through C-6, Appendix C).

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

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

Gross Beta Samples from the location were analyzed for concentrations of gross beta (Tables C-11.1, Appendix C). Gross beta was detected in all samples. The values ranged from 2.8 to 6.8 pCi/l.

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

Monthly composites of weekly samples from the location were analyzed for tritium activity (Table C-11.2, Appendix C). Tritium was detected in five of 12 samples. The values ranged from 238 to 1020 pCi/l. Concentrations detected were consistent with those detected in previous years (Figure C-8, Appendix C).

Gamma Spectromety Samples from the location were analyzed for gamma emitting nuclides (Table C-11.3, Appendix C). No nuclides were detected, and all required LLDs were met.

3. Ground/well Water Quarterly samples were collected at nine locations (BD-13, BD-34, BD-35, BD-36, BD-37, BD-50, BD-51, BD-53 and BD-54). The following analyses were performed:

Quarterly grab samples from the locations were analyzed for tritium activity (Table C-I11.1, Appendix C). Tritium was detected in three of 33 samples. The values ranged from 352 to 936 pCi/l.

Concentrations detected were consistent with those detected in previous years (Figures C-9 through C-13, Appendix C).

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

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

Gamma Spectrometry.

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

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

5. Sediment Aquatic sediment samples were collected at two locations (BD-1O and BD-57) semiannually. The locations, located downstream, could be affected by Braidwood Station's effluent releases. The following analysis was performed:

Gamma Spectrometry.

Sediment samples from the location were analyzed for gamma emitting nuclides (Table C-V.1, Appendix C).

Concentrations of the fission product Cs-1 37 were found at both stations in three of four samples. The values ranged from 105 to 151 pCi/kg dry. The activity detected was consistent with those detected in previous years (29 pCi/kg to 260 pCi/kg from 1995 to 2006). No other Braidwood fission or activation products were found and all required LLDs were met.

B. Atmospheric Environment

1. Airborne
a. Air Particulates Continuous air particulate samples were collected from eight locations on a weekly basis. The eight locations were separated into three groups: Near field samplers (BD-06, BD-1 9, BD-20 and BD-21), far field samplers within 10 km of the site (BD-02, BD-04 and BD-05) and the Control sampler between 10 and 30 km from the site (BD-03). Far field samples are analyzed when the respective near field sample results are inconsistent with previous measurements and radioactivity is confirmed as having its origin in airborne effluents from the station, or at the discretion of the REMP Program Owner. The following analyses were performed:

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

Detectable gross beta activity was observed at all locations.

Comparison of results among the three groups aid in determining the effects, if any, resulting from the operation of Braidwood Station. The results from the near field (Group I) ranged from 4 to 49 E-3 pCi/m 3 with a mean of 22 E-3 pCi/mi . The results P~/3 from the far field (Group II) ranged from P~/3 to52 E-3 pCi/m with a mean of 22 E-3 pCi/i. The results from the Control location (Group Ill) ranged from 12 to 43 E-3 pCi/m 3 with a mean of 20 E-3 pCi/mi.

Comparison of the 2007 air particulate data with previous years data indicate no effects from the operation of Braidwood Station. In addition a comparison of the weekly mean values for 2007 indicate no notable differences among the three groups (Figures C-14 through C-18, Appendix C).

Gamma Spectrometry.

Weekly samples were composited quarterly and analyzed for gamma emitting nuclides (Table C-VI.3, Appendix C). No nuclides were detected, and all required LLDs were met.

b. Airborne Iodine Continuous air samples were collected from eight locations (BD-02, BD-03, BD-04, BD-05, BD-06, BD19, BD-20, and BD-21) and analyzed weekly for 1-131 (Table C-VI.1, Appendix C). 1-131 was not detected, and the required LLD was met.
2. Terrestrial
a. Milk Samples were collected from two locations (BD-17 and BD-1 8) biweekly May through October and monthly November through April. The following analyses were performed:

Milk samples from all locations were analyzed for concentrations of 1-131 (Table C-VIII.1, Appendix C). No 1-131 was detected, and all required LLDs were met.

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

b. Food Products Food product samples were collected at five locations (BD-Control, BD-Quad 1, BD-Quad 2, BD-Quad 3 and BD-Quad
4) when available. Four locations, (located downstream, BD-Quad 1, BD-Quad 2, BD-Quad 3 and BD-Quad 4) could be affected by Braidwood Station's effluent releases. The following analysis was performed:

Gamma Spectrometry Samples from all locations were analyzed for gamma emitting nuclides (Table C-IX.1, Appendix C). Cesium-137 was found in two of 10 samples. The values for both samples were 11 pCi/kg wet. No other nuclides were detected, and all required LLDs were met.

C. Ambient Gamma Radiation Ambient gamma radiation levels were measured utilizing dual element calcium fluoride and lithium fluoride thermoluminescent dosimeters (TLD).

Eighty TLD locations were established around the site. Results of TLD measurements are listed in Tables C-X.1 to C-X.3, Appendix C.

Most TLD measurements were below 40 mR/quarter, with a range of 14 to 43 mR/quarter. A comparison of the Inner Ring, Outer Ring and Other data to the Control Location data, indicate that the ambient gamma radiation levels from all locations were similar.

D. Land Use Survey A Land Use Survey conducted during the August 2007 around the Braidwood Station was performed by Environmental Inc. (Midwest Labs) for Exelon Nuclear to comply with section 12.5.2 of the Braidwood Station's Offsite Dose Calculation Manual. The purpose of the survey was to document the nearest resident, milk producing animal and garden of greater than 500 ft2 in each of the sixteen 22 1/2 degree sectors around the site. There were no changes required to the Braidwood Station REMP, as a result of this survey. The results of this survey are summarized below.

Distance in Miles from the Braidwood Station Reactor Buildings Sector Residence Livestock Milk Farm Miles Miles Miles AN 0.5 2.6 B NNE 1.8 C NE 0.7 0.9 D ENE 0.8 3.3 EE 0.8 2.3 F ESE 2.2 2.3 GSE 2.7 2.7 11.2 H SSE 4.5 JS 4.2 4.8 KSSW 1.3 5.3 5.6 LSW 0.4 1.2 MWSW 0.5 3.8 NW 0.4 1.6 8.7 P WNW 0.4 5.4 Q NW 0.4 R NNW 0.4 E. Summary of Results - Inter-Laboratory Comparison Program The primary and secondary laboratories analyzed Performance Evaluation (PE) samples of air particulate, air iodine, milk, soil, vegetation and water matrices (Appendix D). The PE samples, supplied by Analytics Inc.,

Environmental Resource Associates (ERA) and DOE's Mixed Analyte Performance Evaluation Program (MAPEP), were evaluated against the following pre-set acceptance criteria:

1. Analytics Evaluation Criteria Analytics' evaluation report provides a ratio of laboratory results and Analytics' known value. Since flag values are not assigned by Analytics, TBE-ES evaluates the reported ratios based on internal QC requirements, which are based on the DOE MAPEP criteria.
2. ERA Evaluation Criteria ERA's evaluation report provides an acceptance range for control and warning limits with associated flag values. ERA's acceptance limits are established per the USEPA, NELAC, state specific PT program requirements or ERA's SOP for the Generation of Performance Acceptance Limits, as applicable. The acceptance limits are either determined by a regression equation specific to each analyte or a fixed percentage limit promulgated under the appropriate regulatory document.
3. DOE Evaluation Criteria MAPEP's evaluation report provides an acceptance range with associated flag values.

The MAPEP defines three levels of performance: Acceptable (flag =

"A"), Acceptable with Warning (flag = "W"), and Not Acceptable (flag = "N"). Performance is considered acceptable when a mean result for the specified analyte is +/- 20% of the reference value.

Performance is acceptable with warning when a mean result falls in the range from +/-20% to +/-30% of the reference value (i.e., 20% <

bias < 30%). If the bias is greater than 30%, the results are deemed not acceptable.

For the primary laboratory, 17 out of 19 analytes met the specified acceptance criteria. Two samples did not meet the specified acceptance criteria for the following reasons:

1. Teledyne Brown Engineering's Analytics March 2007 1-131 in charcoal result of 34.7 pCi was lower than the known value of 71.3, resulting in a found to known ratio of 0.49. A new technician counted the charcoal cartridge on the back rather than the face side. Due to decay of the 1-131, recounting could not be performed.

Counting the 2nd quarter Analytics charcoal cartridge on the face and the back resulted in approximately 220% more activity on the face of the cartridge. This indicates that we would have had acceptable results (ratio approximately 1.07) if the cartridge had been counted on the face side. The investigation was documented by Nonconformance Report NCR 07-02.

2. Teledyne Brown Engineering's ERA July 2007 Cs-1 34 result of 57.6 pCi/L exceeded the lower acceptance limit of 60.2 pCi/L. The high activity of the sample resulted in the lower acceptance limit of 8.66, although the ratio of found to known was 83.6%, which is considered acceptable by TBE. The investigation was documented by Nonconformance Report NCR 07-07.

For the secondary laboratory, 18 out of 19 analytes met the specified acceptance criteria. One sample did not meet the specified acceptance criteria for the following reasons:

1. Environmental Inc.'s ERA March 2007 air particulate Cs-137 result of 345.3 pCi/L exceeded the upper control limit of 336 pCi/L. The reported result was calculated using composite filter geometry rather than the single filter geometry. The recalculated result of 305.8 pCi/filter fell within the acceptance limits. This was entered into their June 2007 Program Deviation Report.

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

Intentionally left blank APPENDIX A RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT QUARTERLY AND ANNUAL

SUMMARY

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MLEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS SURFACE WATER GR-B 71 4 6.3 7.5 11.6 BD-40 INDICATOR (PCI/LITER) (52/59) (12/12) (12/12) BRAIDWOOD STATION COOLING LAKE (2.3/14.8) (3.6/13.5) (8.6/14.8) ONSITE H-3 24 200 373 <LLD 585 BD-10 INDICATOR 0 (3/20) (1/4) KANKAKEE RIVER DOWNSTREAM (219/585) 5.4 MILES NE OF SITE GAMMA 71 MN-54 15 <LLD <LLD 0 CO-58 15 <LLD <LLD 0 FE-59 30 <LLD <LLD 0 CO-60 15 <LLD <LLD n ZN-65 30 <LLD <LLD 0

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

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS SURFACE WATER NB-95 15 <LLD <LLD 0 (PCI/LITER)

ZR-95 30 <LLD <LLD 0 1-131 15 <LLD <LLD 0 CS-134 15 <LLD <LLD 0 CS-137 18 <LLD <LLD 0 BA-140 60 <LLD <LLD 0 LA-140 15 <LLD <LLD 0

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

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS PUBLIC WATER GR-B 12 4 4.5 NA 4.5 BD-22 INDICATOR 0 (PCULITER) (12/12) (12/12) WILMINGTON (2.8/6.8) (2.8/6.8) 6.0 MILES NE OF SITE H-3 12 200 538 NA 538 BD-22 INDICATOR 0 (5/12) (5/12) WILMINGTON (238/1020) (238/1020) 6.0 MILES NE OF SITE GAMMA 12 MN-54 15 <LLD NA 0 CO-58 15 <LLD NA 0 FE-59 30 <LLD NA 0 CO-60 15 <LLD NA 0 ZN-65 30 <LLD NA 0

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

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS PUBLIC WATER NB-95 15 <LLD NA 0 (PCI/LITER)

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

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

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS GROUND WATER H-3 33 200 662 NA 818 BD-50 INDICATOR 0 (PCI/LITER) (3/33) (2/2)

(352/936) (699/936)

LJA GAMMA 33 MN-54 15 <LLD NA 0 CO-58 15 <LLD NA FE-59 30 <LLD NA 0 CO-60 15 <LLD NA 0 ZN-65 30 <LLD NA NB-95 15 <LLD NA 0

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

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS GROUND WATER ZR-95 30 <LLD NA 0 (PCI/LITER) 1-131 15 <LLD NA 0 CS-134 15 <LLD NA 0 CS-137 18 <LLD NA 0 BA-140 60 <LLD NA 0 LA-140 15 <LLD NA 0 FISH GAMMA 12 (PCI/KG WET) MN-54 130 <LLD <LLD 0

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

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER L4MIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS FISH CO-58 130 <LLD <LLD 0 (PCI/KG WET)

FE-59 260 <LLD <LLD 0 CO-60 130 <LLD <LLD 0 ZN-65 260 <LLD <LLD 0 NB-95 NA <LLD <LLD 0 ZR-95 NA <LLD <LLD 0 1-131 NA <LLD <LLD 0

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

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS FISH CS-134 130 <LLD <LLD 0 (PCI/KG WET) 00 CS-137 150 <LLD <LLD 0 BA-140 NA <LLD <LLD 0 LA-140 NA <LLD <LLD 0 SEDIMENT GAMMA 4 (PCI/KG DRY) MN-54 NA <LLD NA 0 CO-58 NA <LLD NA 0

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

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

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

CO-60 NA <LLD NA 0 ZN-65 NA <LLD NA 0 NB-95 NA <LLD NA 0 ZR-95 NA <LLD NA 0 CS-134 150 <LLD NA 0

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

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS SEDIMENT CS-137 180 134 NA 149 BD-10 INDICATOR (PCI/KG DRY) (3/4) (2/2) KANKAKEE RIVER DOWNSTREAM (105/151) (146/151) 5.4 MILES NE OF SITE 0 BA-140 NA <LLD NA LA-140 NA <LLD NA 0 AIR PARTICULATE GR-B 422 10 22 20 23 BD-05 INDICATOR (E-3 PCI/CU.METER) (368/369) (53/53) (51/51) GARDNER (4/52) (12/43) (12/49) 5.5 MILES SW OF SITE GAMMA 32 MN-54 NA <LLD <LLD 0 CO-58 NA <LLD <LLD 0

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

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS AIR PARTICULATE FE-59 NA <LLD <LLD 0 (E-3 PCI/CU.METER)

CO-60 NA <LLD <LLD 0 ZN-65 NA <LLD <LLD 0 NB-95 NA <LLD <LLD 0 ZR-95 NA <LLD <LLD 0 CS-134 50 <LLD <LLD 0 CS-137 60 <LLD <LLD 0

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

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS AIR PARTICULATE BA-140 NA <LLD <LLD 0 (E-3 PCI/CU.METER) k) LA- 140 NA <LLD <LLD 0 AIR IODINE GAMMA 422 (E-3 PCI/CU.METER) 1-131 70 <LLD <LLD 0 MILK 1-131 38 <LLD <LLD 0 (PCI/LITER)

MILK . GAMMA 38 (PCIILITER) MN-54 NA <LLD <LLD 0 CO-58 NA <LLD <LLD 0 FE-59 NA <LLD <LLD

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

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUT1NE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS MILK CO-60 NA <LLD <LLD 0 (PCI/LITER)

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

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

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

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

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

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

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR BRAIDWOOD STATION, 2007 Name of Facility: BRAIDWOOD DOCKET NUMBER: 50-456 & 50-457 Location of Facility: BRACEVILLE, IL REPORTING PERIOD: ANNUAL 2007 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN(M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS VEGETATION ZR-95 NA <LLD <LLD 0 (PCI/KG WET)

CS-134 60 <LLD <LLD 0 CS-137 80 11.4 <LLD 11.4 BD-QUAD 1 INDICATOR 0 (2/8) (2/2) CLARK FARM (11.4/11.4) (11.4/11.4) 3.8 MILES ENE OF SITE BA-140 NA <LLD <LLD 0 LA-146 NA <LLD <LLD 0 DIRECT RADIATION TLD-QUARTERLY 320 NA 22.7 22.9 28.5 BD-209-2 INDICATOR 0 (MILLI-ROENTGEN/QTR.) (312/312) (8/8) (4/4)

(14/43) (16/37) (22/43) 4.8 MILES S

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

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

TABLE B-1: Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Braidwood Station, 2007 Location Location Description Distance & Direction From Site A- Surface Water BD-10 Kankakee River Downstream (indicator) 5.4 miles NE BD-25 Kankakee River Upstream (control) 9.6 miles E BD-38 Main Drainage Ditch (indicator) 1.5 miles SW BD-40 Braidwood Station Cooling Lake (indicator) Onsite BD-55 North Pond Fatlan Site (Indicator) 0.6 miles NE BD-56 South Pond Fatlan Site (indictor) 0.6 miles NE B. Drinkina (Potahle/ Waqer BD-22 Wilmington (indicator) 6.0 miles NE C G rouind/WPl BD-13 Braidwood City Hall Well (indicator) 1.7 miles NNE BD-34 Gibson Well (indicator) 4.7 miles E BD-35 Joly Well (indicator) 4.7 miles E BD-36 Hutton Well (indicator) 4.7 miles E BD-37 Nurczyk Well (indicator) 4.7 miles E BD-50 Skole Well (indicator) 4.7 miles E BD-51 Fatlan Well (indicator) 0.6 miles NE BD-53 Phelps Well (indicator) 0.7 miles E BD-54 Cash Well (indicator) 0.9 miles NE u WiIlK - ni-wPK-Iy L monrinly BD-17 Halpin's Dairy (indicator) 5.5 miles SSW BD-18 Biros' Farm (control) 8.7 miles W F Air P r~ijIciilt / Air Iodine BD-02 Custer Park (indicator) 5.0 miles E BD-03 County Line Road (control) 6.2 miles ESE BD-04 Essex (indicator) 4.8 miles SSE BD-05 Gardner (indicator) 5.5 miles SW BD-06 Godley (indicator) 0.5 miles WSW BD-19 Nearsite NW (indicator) 0.3 miles NW BD-20 Nearsite N (indicator) 0.6 miles N BD-21 Nearsite NE (indicator) 0.5 miles NE FEoh BD-25 Kankakee River, Upstream (control) 5.0 miles E BD-28 Kankakee River, Discharge (indicator) 5.4 miles E BD-41 Cooling Lake (indicator) 1.0 mile E Cý Sprimpnt BD-10 Kankakee River, Downstream (indicator) 5.4 miles NE BD-57 Circulating Water Blowdown Discharge (indicator) 5.4 miles E B-I

TABLE B-1: Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Braidwood Station, 2007 Location Location Description Distance & Direction From Site H Food Producrts Quadrant 1 Clark Farm 3.8 miles ENE Quadrant 2 W.F. Soltwisch 4.5 miles SSE Quadrant 3 Terri Schultz 4.8 miles SSW Quadrant 4 Bruce Sinkular 1.9 miles NNW Control Gorman Farm 9.0 miles NE It-nvironmPrital DO-S~mptry - TI ni Siat Rmindary.

BD-101-3 and -4 0.5 miles N BD-102-1 and -2 1.1 miles NNE BD-103-1 and -2 1.0 miles NE BD-104-1 and -2 0.7 miles ENE BD-105-1 and -2 2.2 miles E BD-106-1 and -2 2.5 miles ESE BD-107-1 and -2 3.2 miles SE BD-108-1 and -2 3.2 miles SSE BD-109-1 and -2 3.8 miles S BD-110-1 and -2 2.8 miles SSW BD-111a-1 and-2 1.4 miles SW BD-112-1 and -2 0.7 miles WSW BD-1 13a-1 and -2 0.5 miles W BD-114-1 and -2 0.4 miles WNW BD-115-1 and -2 0.3 miles NW BD-1 16-1 0.4 miles NNW BD-1 16-2 0.5 miles NNW Intermediate Distance BD-201-1 and -2 4.2 miles N BD-202-1 and -2 4.8 miles NNE BD-203-1 and -2 4.9 miles NE BD-204-1 and -2 4.3 miles ENE BD-205-1 and -2 4.0 miles E BD-206-1 and -2 4.5 miles ESE BD-207-1 and -2 4.5 miles SE BD-208-1 and -2 4.5 miles SSE BD-209-1 and -2 4.8 miles S BD-210-1 and -2 5.3 miles SSW BD-211-1 and -2 4.8 miles SW BD-212-3 and -4 5.0 miles WSW BD-213-3 and -4 4.8 miles W BD-214-1 and -2 4.3 miles WNW BD-215-1 and -2 4.5 miles NW BD-216-1 and -2 4.0 miles NNW Other BD-02-1 and -2 Custer Park (indicator) 5.0 miles E BD-04-1 and -2 Essex (indicator) 4.8 miles SSE BD-05-1 and -2 Gardner (indicator) 5.5 miles SW BD-06-1 and -2 Godley (indicator) 0.5 miles WSW BD-19-1 and -2 Nearsite NW (indicator) 0.3 miles NW BD-20-1 and -2 Nearsite N (indicator) 0.6 miles N BD-21-1 and -2 Nearsite NE (indicator) 0.5 miles NE B]-2

TABLE B-1: Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Braidwood Station, 2007 Location Location Description Distance & Direction From Site I Fnvirnnm .ntaI Dn*imptry - TLD (t-nnt'd, Control and Sp.cial Interest BD-03-1 and -2 Onsite 2 0.3 miles NE B]-3

TABLE B-2: Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Braidwood Station, 2007 Sample Analysis Sampling Analytical Procedure Number Medium Method Surface Water Gamma Spectroscopy Monthly composite TBE, TBE-2007 Gamma emitting radioisotope analysis from weekly grab samples. Env. Inc., GS-01 Determination of gamma emitters by

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

Env. Inc., W(DS)-O1 Determination of gross alpha and/or gross beta in water (dissolved solids or total residue)

Surface Water Tritium Quarterly TBE, TBE-2011 Tritium analysis in drinking water by composite from liquid scintillation weekly grab samples. Env. Inc., T-02 Determination of tritium in water (direct method)

Drinking Water Gross Beta Monthly composite TBE, TBE-2008 Gross Alpha and/or gross beta activity from weekly grab in various matrices samples. Env. Inc., W(DS)-01 Determination of gross alpha and/or gross beta in water (dissolved solids or total residue)

Drinking Water Gamma Spectroscopy Monthly composite TBE, TBE-2007 Gamma emitting radioisotope analysis from weekly grab samples. Env. Inc., GS-01 Determination of gamma emitters by gamma soectroscoov Drinking Water Tritium Quarterly TBE, TBE-2011 Tritium analysis in drinking water by composite from liquid scintillation weekly grab samples. Env. Inc., T-02 Determination of tritium in water (direct method)

Drinking Water Gamma Spectroscopy Quarterly grab TBE, TBE-2007 Gamma emitting radioisotope analysis samples.

Env. Inc., GS-01 Determination of gamma emitters by gamma spectroscopy Ground/well Tritium Quarterly grab TBE, TBE-2011 Tritium analysis in drinking water by Water samples. liquid scintillation Env. Inc., T-02 Determination of tritium in water (direct method)

Fish Gamma Spectroscopy Samples collected TBE-2007 Gamma emitting radioisotope analysis twice annually via electroshocking or Env. Inc., GS-01 Determination of gamma emitters by other techniques gamma spectroscopy B -4

TABLE B-2: Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Braidwood Station, 2007 Sample Analysis Sampling Analytical Procedure Number Medium Method Air Particulates Gross Beta One-week TBE, TBE-2008 Gross Alpha and/or gross beta activity composite of in various matrices continuous air sampling through Env. Inc., AP-02 Determination of gross alpha and/or glass fiber filter gross beta in air particulate filters Dager Air Particulates Gamma Spectroscopy Quarterly TBE, TBE-2007 Gamma emitting radioisotope analysis composite of each station Env. Inc., GS-01 Determination of gamma emitters by gamma soectroscopy Air Iodine Gamma Spectroscopy Weekly composite TBE, TBE-2007 Gamma emitting radioisotope analysis of continuous air sampling through Env. Inc., GS-01 Determination of gamma emitters by charcoal filter oamma spectroscopy Milk 1-131 Bi-weekly grab TBE, TBE-2012 Radioiodine in various matrices sample May through October. Env. Inc., 1-131-01 Determination of 1-131 in milk by Monthly all other anion exchange times Milk Gamma Spectroscopy Bi-weekly grab TBE, TBE-2007 Gamma emitting radioisotope analysis sample May through October. Env. Inc., GS-01 Determination of gamma emitters by Monthly all other gamma spectroscopy times Food Products Gamma Spectroscopy Annual grab TBE, TBE-2007 Gamma emitting radioisotope analysis samples.

Env. Inc., GS-01 Determination of gamma emitters by gamma spectroscopy TLD Thermoluminescence Quarterly TLDs Global Dosimetry Dosimetry comprised of two Global Dosimetry CaF2 elements.

B]-5

m TLID Location Figure B-1 Inner Ring TLD Locations of the Braidwood Station, 2007 B-6

+

0 . - - 2 II 2 4 5 I-I RAZEnzomm -- I I I = till"~

m*T Locaionsec Figure B-2 Fixed Air Sampling and Outer Ring TLD Locations of the Braidwood Station, 2007 B-7

4-18 X (8.7 rrfdes WW4) Y OFFSflD DO.5 CALCULA'11ON MANUAL BFJdDWO0xD STATION 0 .  ? 3 4I FIGURE 11-3 lffiles navO1"Otf~ ARO %'ATERBOM4E ý2TOS1RT PATYWAY SAMPLE LOCATIONS a Water 0 Sei 0 ish X Milk Figure B-3 Ingestion and Waterborne Exposure Pathway Sample Locations of the Braidwood Station, 2007 B-8

APPENDIX C DATA TABLES AND FIGURES PRIMARY LABORATORY

TABLE C-I.1 CONCENTRATIONS OF GROSS BETA IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION BD-10 BD-25 BD-38 BD-40 BD-55 BD-56 PERIOD 01/04/07 - 01/25/07 2.8 +/- 1.8 7.4 +/- 2.2 3.6 +/- 2.1 8.6 +/- 2.6 3.6 +/- 1.7 3.1 +/- 2.0 02/01/07 - 02/08/07 3.2 +/- 1.9 11 + 2.9 8.6 +/- 2.8 12 +/- 2.8 2.4 +/- 1.6 4.2 +/- 2.2 03/15/07 - 03/29/07 6.4 +/- 2.0 6.9 +/- 2.3 5.2 +/- 2.1 12 +/- 2.8 2:3 +/- 1.5 3.1 +/- 2.0 04/05/07 - 04/26/07 3.2 +/- 2.0 7.6 +/- 2.6 5.0 +/- 2.4 11 +/- 2.9 < 2.6 < 3.6 05/03/07 - 05/31/07 4.7 +/- 2.1 5.7 +/- 2.2 5.1 +/- 2.5 12 +/- 2.9 4.2 +/- 1.7 5.2 +/- 2.6 06/07/07 - 06/28/07 5.7 +/- 1.9 4.2 +/- 1.8 9.1 +/- 2.5 10 +/- 2.9 3.2 +/- 1.4 5.5 +/- 2.3 07/05/07 - 07/26/07 4.2 +/- 1.9 3.6 +/- 1.7 3.4 +/- 1.9 9.9 +/- 2.5 < 2.1 < 3.1 08/02/07 - 08/30/07 3.9 +/- 1.8 5.3 + 1.9 4.1 +/- 2.0 11 +/- 2.6 < 2.2 3.5 +/- 2.1 09/06/07 - 09/27/07 4.6 +/- 2.1 7.1 +/- 2.3 6.6 +/- 2.5 13 +/- 2.9 < 2.4 3.8 +/- 2.2 10/04/07 - 10/25/07 4.3 +/- 2.1 8.2 +/- 2.4 5.5 +/- 2.5 12 +/- 2.9 < 2.5 5.3 +/- 2.5 11/01/07 - 11/29/07 5.4 +/- 2.2 9.0 + 2.4 8.3 +/- 2.6 15 +/- 3.1 2.8 +/- 1.7 6.0 +/- 2.5 12/20/07 - 12/27/07 6.1 +/- 1.9 14 +/- 3.0 7.7 +/- 2.4 13 +/- 2.7 3.5 +/- 1.6 (1)

MEAN* 4.5 +/- 2.4 7.5 +/- 5.7 6.0 +/- 4.0 12 +/- 3.3 3.1 +/- 1.4 4.4 +/- 2.2 TABLE C-I.2 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLES COLLECTED IN THE VIICNITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION BD-10 BD-25 BD-38 BD-40 BD-55 BD-56 PERIOD U

01/04/07 - 03/29/07 < 169 < 185 181 < 186 185 < 176 04/05/07 - 06/28/07 < 168 < 168 170 219 +/- 115 167 < 167 07/05/07 - 09/27/07 585 +/- 141 < 186 190 316 +/- 125 188 < 189 10/04/07 - 11/30/07 < 173 < 192 175 < 173 170 < 175 MEAN* 585 +/- 0 268 +/- 137

  • THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-1

TABLE C-I.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED INTHE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-10 01/04/07 - 01/25/'07 <1 <2 <1 2 <1 <2 <8 <1 <1 < 12 <4 02/01/07 - 02/23/'07 <3 <6 <3 5 <3 <5 < 14 <3 <3 < 25 <7 03/01/07 - 03/29/'07 <1 <3 <1 3 <2 <3 <7 <1 <1 < 12 <4 04/05/07 - 04/26/'07 <2 <7 <3 5 <3 <6 < 13 <2 <3 < 26 <8 05/03/07 - 05/31/'07 <2 <6 <2 5 <3 <5 < 13 <2 <2 < 26 <9 06/07/07 - 06/28/'07 <1 <4 <1 3 <2 <3 < 12 <1 <1 < 19 <6 07/05/07 - 07/26/'07 <2 <5 <2 4 <2 <4 < 15 <2 <2 < 22 <9 08/02/07 - 08/30/'07 <1 <3 <1 2 <1 <2 < 15 <1 <1 < 19 <6 (I 09/06/07 - 09/27/'07 <1 <4 <1 3 <2 <3 < 10 <1 <1 < 16 <6 10/04/07 - 10/25/'07 <1 <2 <1 1 <1 <2 < 12 <1 <1 < 14 <4 11/01/07 - 11/29/'07 <1 <4 <1 3 <2 <3 <6 <1 <1 < 13 <4 12/06/07 - 12/27/ /07 <1 <2 <1 2 <1 <2 < 14 <1 <1 < 16 <5 MEAN BD-25 01/04/07 01/25/07 <2 <2 <5 <2 3 <2 <4 < 14 <2 <2 < 23 7 02/01/07 02/23/07 <3 <4 <8 <3 6 <4 <6 < 15 <3 <3 < 33 9 03/01/07 03/29/07 <2 <2 <5 <2 4 <2 <4 < 10 <2 <2 < 19 6 04/05/07 04/26/07 <3 <3 <7 <3 6 <3 <5 < 14 <2 <3 < 24 9 05/03/07 05/31/07 <2 <2 <4 <2 3 <2 <3 <9 <1 <2 < 16 5 06/07/07 06/28/07 <1 <2 <4 <2 3 <2 <3 < 14 <1 <2 < 20 7 07/05/07 07/26/07 <2 <2 <5 <2 3 <2 <4 < 15 <2 <2 < 24 7 08/02/07 08/30/07 <1 <1 <2 <1 2 <1 <2 < 14 <1 <1 < 17 5 09/06/07 09/27/07 <2 <2 <5 <2 4 <2 <4 < 14 <2 <2 < 23 7 10/04/07 10/25/07 <1 <1 <2 <1 2 <1 <2 < 13 <1 <1 < 15 5 11/01/07 11/29/07 <2 <2 <5 <2 4 <2 <4 <9 <2 <2 < 18 6 12/06/07 12/27/07 <1 <1 <2 <1 2 <1 <2 < 14 <1 <1 < 17 5 MEAN

TABLE C-I.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER

  • 2 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-38 01/04/07 - 01/25/07 <2 <2 <5 <2 <4 <2 <4 < 14 <2 <2 < 23 <7 02/01/07 - 02/08/07 <2 <2 <5 <2 <3 <2 <4 < 14 <2 <2 < 39 < 13 03/01/07 - 03/29/07 <2 <2 <5 <2 <4 <2 <4 < 10 <2 <2 < 18 <7 04/05/07 - 04/26/07 <3 <3 <8 <3 <7 <4 <7 < 15 <3 <3 < 30 < 10 05/03/07 - 05/31/07 <2 <2 <4 <2 <3 <2 <3 <9 <2 <2 < 16 <5 06/07/07 - 06/28/07 <1 <2 <4 <2 <3 <2 <4 < 14 <1 <2 < 22 <7 07/05/07 - 07/26/07 <2 <2 <4 <2 <3 <2 <3 < 15 <2 <2 < 21 <7 08/02/07 - 08/30/07 <1 <1 <2 <1 <2 <1 <2 < 13 <1 <1 < 15 <5 09/06/07 - 09/27/07 <2 <2 <4 <2 <3 <2 <3 < 14 <2 <2 < 22 <7 10/04/07 - 10/25/07 <1 <1 <3 <1 <2 <1 <2 < 15 <1 <1 < 19 <5 11/01/07 - 11/29/07 <2 <2 <5 <2 <5 <3 <4 <9 <2 <2 < 19 <7 12/06/07 - 12/27/07 <1 <1 <2 <1 < 1 <1 <2 < 13 <1 <1
  • 16 <5 MEAN BD-40 01/04/07 - 01/25/07 <1 <2 <4 <2 3 <2 <3 < 13 <1 <1 < 19 <7 02/01/07 - 02/23/07 <3 <3 <7 <3 5 <3 <5 < 15 <2 <3 < 25 <8 03/01/07 - 03/29/07 <2 <2 <4 <2 3 <2 <3 <9 <1 <2 < 15 <6 04/05/07 - 04/26/07 <3 <3 <8 <3 6 <3 <6 < 14 <2 <3 < 28 <9 05/03/07 - 05/31/07 <3 <3 <7 <3 5 <3 <5 < 15 <3 <3 < 27 <8 06/07/07 - 06/28/07 <2 <2 <4 <2 3 <2 <3 < 14 <1 <2 < 20 <7 07/05/07 - 07/26/07 <2 <2 <5 <2 4 <2 <4 < 14 <2 <2 < 21 <7 08/02/07 - 08/30/07 <1 <1 <2 <1 1 <1 <2 < 15 <1 <1 < 17 <6 09/06/07 - 09/27/07 <2 <2 <5 <2 4 <2 <4 < 14 <2 <2 < 23 <8 10/04/07 - 10/25/07 <1 <1 <3 <1 2 <1 <2
  • 13 <1 <1 < 17 <5 11/01/07 - 11/29/07 <2 <2 <4 <2 4 <2 <3 <9 <2 <2 < 17 <5 12/06/07 - 12/27/07 <1 <1 <2 <1 2 <1 <2 < 13 <1 <1
  • 15 <4 MEAN

TABLE C-1.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-55 01/04/07 - 01/25/07 <2 <2 <5 <2 <4 <2 <4 < 14 <1 <2 < 22 <7 02/01/07 - 02/08/07 <2 <2 <5 <2 <3 <2 <4 < 11 <2 <2 < 38 < 13 03/15/07 - 03/29/07 <2 <2 <4 <2 <4 <2 <3 < 10 <2 <2 < 17 <6 04/05/07 - 04/26/07 <3 <3 <7 <3 <6 <3 <6 < 14 <2 <3 < 26 <8 05/03/07 - 05/31/07 <1 <2 <3 <1 <3 <2 <3 <9 <1 <1 < 15 <4 06/07/07 - 06/28/07 <1 < 2 <4 <1 <3 <2 <3 < 13 <1 <2 < 20 <7 07/05/07 - 07/26/07 <2 <2 <5 <2 <3 <2 <4 < 14 <2 <2 < 23 <8 08/02/07 - 08/30/07 <1 <1 <2 <1 <2 <1 <2

  • 13 <1 <1 < 15 <5 09/06/07 - 09/27/07 <2 <2 <5 <2 <4 <2 <4 < 15 <2 <2 < 25 <8 10/04/07 - 10/25/07 <1 <1 <3 <1 <2 <1 <2
  • 12 <1 <1 < 18 <6 11/01/07 - 11/29/07 <1 <2 <4 <2 <3 <2 <3 <8 <1 <2 < 14 <5 12/20/07 - 12/27/07 <2 <2 <5 <2 <3 <2 <4 < 10 <2 <2 < 31 < 11 MEAN BD-56 01/04/07 - 01/25/07 <1 <1 <4 <1 3 <2 <3 < 11 <1 <1 *17 <6 02/01/07 - 02/08/07 <2 <2 <5 <2 4 <2 <4 < 12 <2 <2 < 41 < 12 03/15/07 - 03/29/07 <2 <2 <5 <2 4 <3 <5 < 12 <2 <2 < 22 <7 04/05/07 - 04/26/07 <3 <3 <7 <3 5 <3 <5
  • 14 <2 <3 < 26 <8 05/03/07 - 05/31/07 <2 <2 <4 <2 3 <2 <3 <9 <1 <2 < 15 <5 06/07/07 - 06/28/07 <1 <2 <4 <1 3 <2 <3
  • 14 <1 <1 < 20 <7 07/05/07 - 07/26/07 <1 <2 <4 <1 3 <2 <3 < 14 <1 <2 < 21 <7 08/02/07 - 08/30/07 <1 <1 <2 <1 2 <1 <2 < 13 <1 <1 < 15 <4 09/06/07 - 09/27/07 <2 <2 <5 <2 4 <2 <4 < 15 <2 <2 < 23 <7 10/04/07 - 10/25/07 <1 <1 <3 <1 2 <1 <2 < 14 <1 <1 < 18 <6 11/01/07 - 11/29/07 <2 <2 <5 <2 4 <2 <4 < 10 <2 <2 < 19 <6 12/20/07 - 12/27/07 (1)

MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION

TABLE C-I1.1 CONCENTRATIONS OF GROSS BETA IN PUBLIC WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION BD-22 PERIOD U

12/28/06 - 02/01/07 2.8 +/- 1.6 02/01/07 - 03/01/07 5.6 +/- 1.6 03/01/07 - 03/29/07 4.3 +/- 1.7 03/29/07 - 05/03/07 5.1 +/- 1.6 05/03/07 - 05/31/07 3.1 +/- 1.6 05/31/07 - 06/28/07 3.7 +/- 1.7 06/28/07 - 08/02/07 3.4 +/- 1.7 08/02/07 - 08/30/07 6.8 +/- 1.8 08/30/07 - 09/27/07 4.8 +/- 1.8 09/27/07 - 11/01/07 4.7 +/- 1.8 11/01/07 - 11/29/07 6.1 +/- 1.6 11/29/07 - 01/03/08 3.3" +/- 1.5 MEAN 4.5 +/- 2.5 TABLE C-11.2 CONCENTRATIONS OF TRITIUM IN PUBLIC WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION BD-22 PERIOD U

12/28/06 - 02/01/07 < 179 02/01/07 - 03/01/07

  • 191 03/01/07 - 03/29/07 < 151 03/29/07 - 05/03/07 < 160 05/03/07 - 05/31/07 < 160 05/31/07 - 06/28/07 < 162 06/28/07 - 08/02/07 245 +/- 110 08/02/07 - 08/30/07 426 + 133 08/30/07 - 09/27/07 238 + 120 09/27/07 - 11/01/07 1020 +/-. 193 11/01/07 - 11/29/07 760 + 157 11/29/07 - 01/03/08 < 151 MEAN* 538 +/- 686
  • THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES C-5

TABLE C-11.3 CONCENTRATIONS OF GAMMA EMITTERS IN PUBLIC WATER SAMPLES COLLECTED INTHE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER 12 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-22 12/28/06 - 02/01/07 <5 <5 <12 <4 <7 <6 <8 <10 <5 <5 <27 <11 02/01/07 - 03/01/07 <1 <2 <4 <1 <3 <2 <3 < 11 <1 1 17 <6 03/01/07 - 03/29/07 <1 <1 <2 <1 <2 <1 <2 <7 <1 11 <4 03/29/07 - 05/03/07 <3 <3 <6 <2 <5 <3 <4 <6 <2 2 16 <5 05/03/07 - 05/31/07 <2 <3 <5 <2 <5 <3 <5 <6 <2 3 16 <6 05/31/07 - 06/28/07 <1 <1 <4 <1 <2 <2 <3 <9 <1 1 44 < 13 06/28/07 - 08/02/07 <1 <1 <2 <1 <1 <1 <2 < 11 <1 1 12 <4 08/02/07 - 08/30/07 <1 <1 <2 <1 <2 <1 <2 < 15 <1 17 <6 08/30/07 - 09/27/07 <1 <2 <4 <1 <3 <2 <3 < 15 <1 22 <7 09/27/07 - 11/01/07 <1 <2 <4 <1 <3 <2 <3 < 13 <1 19 <6 11/01/07 - 11/29/07 <1 <1 <3 <1 <2 <2 <2 <8 <1 14 <4 11/29/07 - 01/03/08 <2 <3 <5 <2 <5 <3 <4 < 13 <2 2 22 <7 MEAN

TABLE C-II1.1 CONCENTRATIONS OF TRITIUM IN GROUNDIWELL WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER 12 SIGMA COLLECTION BD-13 BD-34 BD-35 BD-36 BD-37 BD-50 BD-51 BD-53 BD-54 PERIOD U

01/12/07 - 01/12/07 < 186 186 < 184 352 + 125 < 184 936 +/- 169 < 189 < 184 < 188 04/13/07 - 04/13/07 < 165 170 < 169 < 167 < 170 (1) < 168 < 169 < 168 07/12/07 - 07/12/07 < 160 160 < 161 < 165 < 164 (1) < 166 < 162 < 159 10/18/07 - 10/18/07 < 192 (1) < 195 < 187 < 192 699 +/- 148 < 194 < 192 < 194 MEAN* 308 +/- 97 914 +/- 306 -

  • THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-7

TABLE C-111.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUND/WELL WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-13 01/11/07 <5 <5 < 12 <8 < 12 <6 < 11 < 13 <5 <5 < 36 < 11 04/12/07 <4 <4 <8 <5 <8 <4 <8 < 10 <4 <4 < 22 <8 07/12/07 <4 <4 <8 <3 <7 <4 <6 <8 <3 <4 < 22 <8 10/11/07 <1 <2 <4 <1 <3 <2 <3 < 13 <1 <1 < 19 <6 MEAN BD-34 01/12/07 <6 <6 <13 <6 <1lJ <7 < 10 < 14 <6 <6 < 32 < 12 04/13/07 <4 <4 <11 <5 <8 <5 <7 <10 <4 <5 <27 < 8 07/12/07 <4 <5 <8 <4 <9 <4 <7 <11 <4 <5 <28 < 8 00 10/11/07 (1)

MEAN

< 12 BD-35 01/12/07 <6 <5 < 13 <6 < 13 <5 <12 < 10 <5 <5 < 33 <9 04/13/07 <4 <4 <8 <4 <9 <5 <8 <8 <4 <5 < 26 <9 07/12/07 <3 <3 <6 <3 <6 <3 <5 < 14 <3 <3 < 17 <5 10/11/07 <1 <2 <3 <1 <3 <2 <3 <1 <1 < 20 <7 MEAN

< 14 BD-36 01/12/07 <6 <5 < 11 <6 <8 <6 < 11 < 13 <5 <5 < 29 < 10 04/13/07 <5 <5 < 11 <5 < 11 <6 < 10 <6 <5 <5 < 34 < 10 07/12/07 <3 <3 <5 <3 <5 <3 <4 < 14 <2 <3 *18 <3 10/11/07 <1 " <2 <4 <2 <3 <2 <3 <1 <2 < 22 <7 MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION

TABLE C-III.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDIWELL WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-37 01/12107 <4 <4 <9 <4 <9 <5 <8 < 10 <4 <4 < 25 <8 04/13/07 <7 <6 < 15 <6 < 10 <6 < 12 < 15 <6 <6 < 42 < 13 07/12/07 <3 <3 <6 <3 <6 <3 <6 <8 <3 <3 < 20 <7 10/11/07 <1 <1 <3 <1 <3 <2 <3 < 12 <1 <1 < 17 <6 MEAN BD-50 01/12/07 <7 < 7 < 14 <6 < 15 < 9 < 15 < 14 <8 <6 <41 < 13 04/13/07 (1) 07/12/07 (1) 10/18/07 <2 <2 <4 <13 <4 <2 <4 <13 <2 <2 <21 <6 MEAN BD-51 01/11/07 <6 <6 < 13 <7 < 12 <7 < 11 14 <6 <6 < 35 <9 04/12/07 <5 <5 <9 <4 <9 <5 <7 13 <4 <4 < 30 <9 07/12/07 <5 <5 < 13 <5 <9 <6 < 10 14 <5 <5 < 34 < 11 10/11/07 <1 <1 <3 <1 <2 <1 <2 11 <1 <1 < 16 <5 MEAN BD-53 01/11/07 <7 <7 <14 <8 < 15 <7 < 13 15 <8 <7 < 40 < 14 04/12/07 <5 <5 < 12 <6 < 10 <5 <9 14 <5 <5 < 27 < 11 07/12/07 <4 <4 <8 <4 <7 <4 <7 12 <4 <4 < 26 <9 10/11/07 <1 <1 <3 <1 <2 <1 <2 12 <1 <1 < 17 <6 MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION

TABLE C-111.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUND/WELL WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs- 134 Cs-137 Ba-140 La- 140 PERIOD BD-54 01/11/07 <6 <6 < 13 <6 < 10 <7 < 11 <13 <6 <6 < 33 < 11 04/12/07 <3 <4 <8 <4 <7 <4 <7 <9 <3 <4 < 24 <6 07/12/07 <5 <5 < 11 <6 < 11 <5 < 10 < 14 <5 <5 < 34 < 10 10/11/07 <1 <1 <3 <1 <2 <1 <2 < 11 <1 <-1 < 16 <4 MEAN C

TABLE C-IV.1 CONCENTRATIONS OF GAMMA EMITTERS IN FISH SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PC/KG WET +/- 2 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-25 05/08/07 Golden Redhorse < 26 < 29 < 78 < 25 < 61 < 33 < 56 < 326 < 27 < 27 < 460 132 05/08/07 Smallmouth Bass < 36 < 40 < 89 < 30 < 69 < 40 < 79 < 382 < 31 <34 < 559 178 10/17/07 Golden Redhorse < 29 < 35 < 81 < 28 <64 < 35 < 65 < 317

  • 28 < 27 < 468 122 10/17/07 Rock Bass < 33 < 40 < 98 < 32 < 67 < 45 < 68 < 374 < 30 < 36 < 537 155 MEAN r)I BD-28 05/08/07 Common Carp < 44 < 56 < 146 < 44 < 115 < 69 103 < 872 < 59 < 46 < 1010 359 05/08/07 Largemouth Bass < 33 < 42 < 108 < 33 < 76 < 45 71 < 432 < 31 < 39 < 583 160 10/17/07 Golden Redhorse
  • 31 < 38 < 83
  • 31 < 75 < 40 62 < 370 < 29
  • 30 < 519 126 10/17/07 Largemouth Bass < 25 < 32 < 65 < 23 <54 < 34 52 < 292 < 22 < 25 < 388 115 MEAN BD-41 05/08/07 Channel Catfish < 35 < 36 < 101 < 30 <64 < 39 64 < 402 < 31 < 36 < 516 149 05/08/07 Largemouth Bass
  • 25 < 33 < 80 < 27 < 57 < 33 61 < 311 < 24
  • 27
  • 402 154 10/17/07 Bluegill < 51 < 64
  • 142 < 53 < 108 < 65 117 < 616 < 47 < 55 < 858 241 10/17/07 Common Carp < 25 < 28 < 75 < 24 < 53 < 30 56 < 268 < 24 < 24 < 382 124 MEAN

TABLE C-V.1 CONCENTRATIONS OF GAMMA EMITTERS IN SEDIMENT SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PC/KG DRY +/- 2 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-10 05/10/07 < 31 < 32 < 83 < 32 <65 < 39 < 59 <27 151 +/- 41 < 410 < 121 10/04/07 < 134 < 103 < 380 < 121 < 302 < 150 < 248 < 94 146 +/- 99 < 1120 < 244 MEAN* 149 +/- 7 BD-57 05/10/07 < 25 < 28 < 75 <25 <65 < 37 < 54 <23 105 +/- 25 < 343 < 93 10/04/07 < 68 < 89 < 191 < 101 < 195 < 107 < 163 < 72 < 88 < 716 < 104 MEAN* 105 +/- 0 -

  • THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES

TABLE C-VI.1 CONCENTRATIONS OF GROSS BETA IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF E-3 PCI/CU METER +/-2 SIGMA GROUP I IGROUP 11 IGROUP III COLLECTION PERIOD BD-06 BD-19 BD-20 BD-21 BD-02 BD-04 BD-05 BD-03 12/28/06-01/04/07 24 +/-5 29 +/-5 23 +/-4 26 +/-5 24 +/-5 23 +/-4 24 +/-5 21+/- 4 01/04/07 -01/11/07 18 +/- 4 22 +/- 4 22 +/- 5 19 +/- 4 16 +/- 4 21 +/- 4 16 +/- 4 13 +/- 4 01/11/07-01/18/07 17 +/-4 19 +/-4 17 +/-4 185+/-4 16 +/-4 18 +/-4 15 +/-4 15+/- 4 01/18/07-01/25/07 32 +/-5 34 +/-5 35 +/-5 30 +/-5 28 +/-5 37 +/-6 33 +/-5 31 +/-5 01/25/07-02/01/07 19 +/-4 25 +/-5 24 +/-5 22+/-5 22 +/-5 20 +/-4 23 +/-5 22 +/-5 02/01/07-02/08/07 20 +/-5 23 +/-5 26 +/-5 26+/-5 22 +/-5 18 +/-4 22 +/-5 20+/- 5 02/08/07-02/15/07 23 +/-4 18 +/-4 25 +/-5 29+/-5 22 +/-4 17 +/-4 21 +/-4 20+/- 4 02/15/07-02/23/07 22 +/-4 26 +/-4 23 +/-4 25+/-4 26 +/-4 30 +/-5 30 +/-5 27+/- 4 02/23/07 -03/01/07 12 +/- 4 16 +/- 5 13 +/- 4 15 +/-5 12 +/- 4 11 +/- 4 12 +/- 4 15 +/- 5 03/01/07-03/07/07 16 +/-4 16 +/-4 17 +/-4 17+/-4 22 +/-5 21 +/-5 20 +/-5 14+/- 4 03/07/07-03/15/07 18 +/-4 17 +/-4 19 +/-4 20+/-4 18 +/-4 21 +/-4 16 +/-4 16 +/-4 03/15/07-03/22/07 18 +/-4 23 +/-5 19 +/-4 21+/-4 17 +/-4 20 +/-4 17 +/-4 16 +/-4 03/22/07-03/29/07 16 +/-4 13 +/-4 12 +/-4 12 +/-4 13 +/-4 14 +/-4 15 +/-4 12 +/-4 03/29/07-04/05/07 14 +/-4 14 +/-4 16 +/-4 13 +/-4 14 +/-4 14 +/-4 17 +/-4 13 +/-4 04/05/07-04/12/07 17 +/-4 18 +/-4 4 +/-3 16 +/-4 18 +/-4 20 +/-4 16 +/-4 16 +/-4 04/12/07-04/19/07 22 +/-5 19 +/-4 19 +/-4 21 +/-4 19 +/-4 20 +/-4 20 +/-4 14+/- 4 04/19/07 -04/26/07 13 +/- 4 14 +/- 4 17 +/- 4 11 +/- 4 18 +/- 4 15 +/- 4 13 +/- 4 16 +/- 4 04/26/07 -05/03/07 18 +/- 4 16 +/- 4 17 +/- 4 14 +/- 4 14 +/- 4 11 +/- 3 18 +/- 4 15 +/- 4 05/03/07-05/10/07 21 +/-5 18 +/-4 20 +/-5 17 +/-4 19 +/-5 17 +/-4 21 +/-5 19+/- 5 05/10/07-05/17/07 19 +/-4 <5 13 +/-4 14 +/-4 16 +/-4 15 +/-4 12 +/-4 13+/- 4 05/17107-05/24/07 24 +/-5 26 +/-5 25 +/-5 24 +/-5 18 +/-4 21 +/-4 19 +/-4 23+/- 5 05/24/07-05/31/07 21 +/-4 21 +/-5 23 +/-5 23 +/-5 18 +/-4 17 +/-4 20 +/-4 23+/- 5 05/31/07-06/07/07 18 +/-4 16 +/-4 14 +/-4 13 +/-4 13 +/-4 16 +/-4 15 +/-4 14+/- 4 06/07/07-06/14/07 18 +/-4 19 +/-4 20 +/-4 21 +/-4 20 +/-4 16 +/-4 24 +/-5 20+/- 4 06/14/07-06/21/07 26 +/-5 25 +/-5 25 +/-5 23 +/-5 20 +/-5 23 +/-5 26 +/-5 25+/- 5 06/21/07-06/28/07 18 +/-4 15 +/-4 15 +/-4 18 +/-4 18 +/-4 .19 +/-5 20 +/-4 14+/- 4 06/28/07 -07/05/07 12 +/- 4 11 +/- 4 15 +/- 4 12 +/- 4 15 +/- 4 12 +/- 4 12 +/- 4 14 +/- 4 07/05/07-07/12/07 21 +/-5 20 +/-5 18 +/-4 20 +/-5 20 +/-5 19 +/-5 21 +/-5 18+/- 4 07/12/07 -07/19/07 12 +/- 4 10 +/- 4 13 +/- 4 11 +/- 4 15 +/- 4 15 +/- 4 18 +/- 5 16 +/- 4 07/19/07 -07/26/07 19 +/-4 17 +/-4 16 +/-4 20 +/-5 20 +/-5 19 +/-4 19 +/-4 20+/- 5 07/26/07 -08/02/07 29 +/-5 27 +/-5 32 +/-5 23 +/-4 30 +/-5 29 +/-5 31 +/-5 17+/- 4 08/02/07 -08/09/07 24 +/-4 16 +/-4 23 +/-4 25 +/-5 23 +/-4 26 +/-5 31 +/-5 23+/- 4 08/09/07 -08/16/07 26 +/-5 30 +/-5 25 +/-5 25 +/-5 22 +/-5 27 +/-5 30 +/-5 21+/- 5 08/16/07 -08/23/07 16 +/-4 17 +/-4 17 +/-4 17 +/-4 12 +/-4 17 +/-4 15 +/-4 16+/- 4 08/23/07 -08/30/07 14 +/-4 25 +/-7 25 +/-5 23 +/-5 24 +/-5 18 +/-4 22 +/-5 20+/- 5 08/30/07 -09/06/07 33 +/-5 25 +/-5 25 +/-5 26 +/-5 26 +/-5 25 +/-5 31 +/-5 28+/- 5 09/06/07 -09/13/07 15 +/-4 16 +/-4 17 +/-4 16 +/-4 18 +/-4 13 +/-4 20 +/-4 13+/- 4 09/13/07 -09/20/07 22 +/-4 26 +/-5 24 +/-5 26 +/-5 26 +/-5 27 +/-5 29 +/-5 26+/- 5 09/20/07 -09/27/07 24 +/-5 28 +/-5 30 +/-5 25 +/-5 30 +/-5 23 +/-5 20 +/-5 23+/- 5 09/27/07 -10/04/07 29 +/-5 32 +/-5 29 +/-5 33 +/-5 27 +/-5 34 +/-5 30 +/-5 32 +/-5 10/04/07 - 10/11/07 11 +/- 4 12 +/- 4 9 +/- 4 12 +/- 4 9 +/- 4 16 +/- 4 13 +/- 4 13 +/- 4 10/11/07 - 10/18/07 26 +/- 5 21 +/- 5 22 +/- 5 22 +/- 5 25 +/- 5 20 +/- 5 28 +/- 5 22 +/- 5 10/18/07 -10/25/07 25 +/-5 19 +/-4 16 +/-4 20 +/-5 21 +/-4 18 +/-4 23 +/-5 19+/- 4 10/25/07 -11/01/07 20 +/-5 20 +/-5 17 +/-4 16 +/-4 17 +/-4 19 +/-4 (1) 18 +/-4 11/01/07 - 11/08/07 17 +/- 4 25 +/- 5 21 +/- 5 23 +/- 5 17 +/- 4 21 +/- 5 (1) 22 +/- 5 11/08/07 -11/15/07 36 +/-5 30 +/-5 30 +/-5 30 +/-5 29 +/-5 32 +/-5 25 +/-2 27 +/-5 11/15/07 - 11/21/07 22 +/- 5 27 +/- 5 24 +/- 5 22 +/- 5 22 +/- 5 21 +/- 5 19 +/- 5 19 +/- 5 11/21/07 -11/29/07 28 +/-4 26 +/-4 23 +/-4 24 +/-4 26 +/-4 26 +/-4 23 +/-4 24+/- 4 11/29/07 -12/06/07 21 +/-5 22 +/-5 22 +/-5 24 +/-5 22 +/-5 24 +/-5 21 +/-5 18+/- 5 12/06/07 -12/13/07 35 +/-5 33 +/-5 33 +/-5 36 +/-5 37 +/-5 36 +/-5 41 +/-6 30 +/-5 12/13/07 -12/20/07 45 +/-6 46 +/-6 42+/- 5 49 +/-6 45 +/-6 52 +/-6 49 +/-6 43+/- 6 12/20/07 -12/27/07 38+/- 5 35+/- 5 37 +/-5 35 +/-5 34 +/-5 35+/- 5 37 +/-5 33+/- 5 12/27/07 -01/03/08 39 +/-6 32+/- 5 35+/- 5 32 +/-5 28+/- 5 36 +/-6 39 +/-6 36+/- 5 MEAN* 22 +/- 15 22 +/- 14 22 +/- 15 22 +/- 15 21 +/- 13 22 +/- 16 23 +/- 16 20 +/- 13

  • THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C -13

TABLE C-VI.2 MONTHLY AND YEARLY VALUES OF GROSS BETA CONCENTRATIONS (E-3 PCI/CU METER) IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 GROUP I - NEAR FIELD LOCATIONS GROUP II - FAR FIELD LOCATIONS GROUP III - CONTROL LOCATIONS COLLECTION MIN MAX MEAN + COLLECTION MIN MAX MEAN + COLLECTION MIN MAX MEAN +

PERIOD 2SD PERIOD 2SD PERIOD 2SD

.4fl*O~rf l 'tflfl'f41"V 4-1 'SC "'A 44 4f)l*ffIn fI"aIn41M7 4a '7 nnfl 4' 4nfllnlftC no M4I lM7 41' '24 1)n -4 IA I14-4OIUO - UL/UIIU1. It au '14 II I1--IOIU - U-UI~ I;J *,.*t" /-/-  ! IO I/-I/--OIUU - U/-IUIIUI 02/01/07 03/01/07 12 29 21 +/- 10 02/01/07 - 03/01/07 11 30 20 +/- 13 02/01/07 - 03/01/07 15 27 20 +/- 10 03/01/07 03/29/07 12 23 17 +/-6 03/01/07 - 03/29/07 13 22 18 +/- 6 03/01/07 - 03/29/07 12 16 15 +/- 3 03/29/07 05/03/07 4 22 16 +/- 8 03/29/07 - 05/03/07 11 20 17 +/- 6 03/29/07 - 05/03/07 13 16 15 +/- 2 05/03/07 05/31/07 <5 26 21 +/- 8 05/03/07 - 05/31/07 12 21 18 +/- 5 05/03/07 - 05/31/07 13 23 20 +/- 9 05/31/07 06/28/07 13 26 19 +/- 8 05/31/07 - 06/28/07 13 26 19 +/- 8 05/31/07 - 06/28/07 14 25 18 +/- 10 06/28/07 08/02/07 10 32 18 +/- 13 06/28/07 - 08/02/07 12 31 20 +/- 12 06/28/07 - 08/02/07 14 20 17 +/- 5 08/02/07 08/30/07 14 30 22 +/- 9 08/02/07 - 08/30/07 12 31 22 +/- 12 08/02/07 - 08/30/07 16 23 20 +/- 6 08/30/07 09/27/07 15 33 24 +/- 11 08/30/07 - 09/27/07 13 31 24 +/- 11 08/30/07 - 09/27/07 13 28 22 +/- 13 09/27/07 11/01/07 9 33 21 +/- 14 09/27/07 - 11/01/07 9 34 21 +/- 14 09/27/07 - 11/01/07 13 32 21 +/- 14 11/01/07 11/29/07 17 36 25 +/- 9 11/01/07 - 11/29/07 17 32 24 +/-9 11/01/07 - 11/29/07 19 27 23 +/- 7 11/29/07 01/03/08 21 49 35 +/- 16 11/29/07 - 01/03/08 21 52 36 +/- 18 11/29/07 - 01/03/08 18 43 32 +/- 18 12/28/06 - 01/03/08 4 49 22 +/- 14 12/28/06 - 01/03/08 9 52 22 +/- 15 12/28/06 - 01/03/08 12 43 20 +/- 13

TABLE C-VI.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-02 12/28/06 - 03/29/07 <2 <3 <8 <2 <7 <3 <5 <2 <2 < 48 < 15 03/29/07 - 06/28//07 <3 <4 < 11 <3 <7 <5 <9 <3 <2 < 310 < 148 06/28/07 - 09/27 /07 <3 <5 <15 <3 < 11 <5 < 10 <4 <3

  • 366 < 79 09/27/07 - 01/03 108 <3 <4 <9 <4 <7 <4 <6 <3 <3 < 61 < 24 MEAN BD-03 12/28/06 - 03/29/07 <4 <4 < 10 <4 <8 <5 <8 <5 <3 < 98 < 38 03/29/07 - 06/28/07 <2 <4 < 10 <3 <7 <5 <9 <3 <2 < 360
  • 119

(-I 06/28/07 - 09/27/07 <4 <5 <16 <3 < 14 <7 <9 <4 <3 < 395 < 176 09/27/07 - 01/03/08 <2 <2 <6 <1 <6 <3 <4 <2 <2 < 33 < 12 MEAN BD-04 12/28/06 - 03/29/07 <4 <4 <7 <4 < 10 <5 <9 <3 <84 < 35 03/29/07 - 06/28/07 <3 <6 < 19 <4 <9 <6 < 12 <4 < 489 < 165 06/28/07 - 09/27/07 <2 <5 < 13 <3 <7 <6 <7 <3 < 245 < 66 09/27/07 - 01/03/08 <2 <3 <7 <2 <5 <2 <5 <1 < 34 < 17 MEAN BD-05 12/28/06 - 03/29/07 <3 <4 <12 <4 <6 <5 <6 <4 <4 < 80 < 25 03/29/07 - 06/28/07 <2 <5 <17 <3 <10 <7 <11 <4 <3 < 462 < 145 06/28/07 - 09/27/07 <2 <4 <12 <2 <9 <4 <7 <3 <2 < 250 < 72 09/27/07 - 01/03/08 <3 <3 <9 <2 <6 <3 <5 <3 <2 <43 <17 MEAN

TABLE C-VI.3 CONCENTRATIONS OF GAMMA EMITTERS INAIR PARTICULATE SAMPLES COLLECTED INTHE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-06 12/28/06 -03/29/07 < 3 < 5 < 12 < 3 < 8 < 4 < 8 < 4 < 4 < 69 < 40 03/29/07 -06/28/07 < 3 < 4 < 16 < 3 < 6 < 4 < 7 < 3 < 2 < 318 < 134 06/28/07 -09/27/07 < 3 < 6 < 17 < 3 < 8 < 6 < 8 < 4. < 3 < 331 < 81 09/27/07 - 01/03/08 < 2 < 2 < 7 < 3 < 5 < 3 < 4 < 1 < 2 < 32 < 15 MEAN - - - - - - - - - - -

BD-19 12/28/06 -03/29/07 <3 < 4 < 13 < 3 < 9 <5 < 7 <3 < 3 < 83 < 33 03/29/07 - 06/28/07 <3 <5 < 18 < 3 < 10 <6 < 7 < 3 <2 < 386 < 117 06/28/07 -09/27/07 <2 < 3 < 10 < 2 < 7 < 5 < 10 < 3 < 3 < 279 < 91 09/27/07 - 01/03/08 <3 <3 <7 <4 <7 <4 <8 <4 <3 < 56 <25 MEAN - - - - - - - - - - -

BD-20 12/28/06 -03/29/07 < 3 < 4 < 9 < 3 < 3 < 5 < 9 < 4 < 3 < 81 < 35 03/29/07 -06/28/07 < 2 < 3 < 13 < 2 < 5 < 3 < 8 < 3 < 2 < 373 < 117 06/28/07 - 09/27/07 < 4 < 6 < 16 < 5 < 12 <4 < 10 < 5 < 4 < 361 < 172 09/27/07 -01/03/08 < 3 < 4 < 9 < 4 < 6 <4 < 7 < 3 < 2 < 49 < 14 MEAN - - - - - - - - - - -

BD-21 12/28/06 -03/29/07 < 4 < 5 < 12 < 4 < 9 < 4 < 7 < 4 < 3 < 86 < 21 03/29/07 -06/28/07 < 3 < 6 < 18 < 3 < 10 < 6 < 7 < 3 < 3 < 403 < 136 06/28/07 -09/27/07 < 3 < 6 < 19 < 3 < 9 < 7 < 8 < 5 < 4 < 342 < 184 09/27/07 -01/03/08 < 3 < 3 < 8 < 2 < 5 < 4 < 5 < 3 < 3 < 42 < 16 MEAN

TABLE C-VII.1 CONCENTRATIONS OF 1-131 IN AIR IODINE SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA GROUP I GROUP 11 I GROUP III COLLECTION PERIOD BD-06 BD-19 BD-20 BD-21 BD-02 BD-04 BD-05 BD-03 12/28/06 -01/04/07 < 29

  • 29
  • 30
  • 30
  • 29
  • 29 < 29 < 29 01/04/07 -01/11/07 < 27
  • 33
  • 34
  • 33
  • 15
  • 27 < 27 < 27 01/11/07 -01/18/07 < 37
  • 38
  • 38
  • 38
  • 48
  • 48 < 48 < 48 01/18/07 -01/25/07 < 41
  • 41 < 44
  • 44
  • 49
  • 53 < 49 < 49 01/25/07 -02/01/07 < 33
  • 35
  • 35
  • 35
  • 39
  • 39 < 39 < 39 02/01/07 -02/08/07 < 31
  • 31
  • 31
  • 31
  • 29
  • 29 < 29 < 29 02/08/07 -02/15/07 < 30
  • 33
  • 33
  • 34
  • 30
  • 23 < 30 < 30 02/15/07 -02/23/07 < 54
  • 55
  • 55
  • 55
  • 43 < 43 < 36 < 43 02/23/07 -03/01/07 < 41 < 41 < 41 < 41
  • 33
  • 33 *<33 < 33 03/01/07 -03/07/07 < 33
  • 61
  • 61
  • 61
  • 69
  • 69 < 61 < 69 03/07/07 -03/15/07 < 21
  • 21
  • 21
  • 21
  • 28
  • 28 < 28 < 28 03/15/07 -03/22/07 < 44
  • 44 < 45 < 44
  • 45
  • 45 < 45 < 45 03/22/07 -03/29/07 < 40
  • 40 < 40 < 40
  • 49
  • 50 *<50 < 50 03/29/07 -04/05/07 < 40
  • 43 < 43
  • 34
  • 41
  • 41 < 43 < 41 04/05/07 -04/12/07 < 32
  • 33
  • 33
  • 33
  • 39
  • 39 < 39 < 39 04/12/07 -04/19/07 < 57
  • 42
  • 53
  • 53
  • 60
  • 60 < 60 < 60 04/19/07 -04/26/07 < 14
  • 14
  • 14
  • 14
  • 15
  • 15 *<15 < 15 04/26/07 -05/03/07 < 60
  • 58
  • 46
  • 58
  • 58
  • 58 < 58 < 58 05/03/07 -05/10/07. < 29
  • 35
  • 38
  • 38
  • 52
  • 52 < 52 < 52 05/10/07 -05/17/07 < 24
  • 36
  • 25
  • 25
  • 34
  • 34 < 24 < 34 05/17/07 -05/24/07 < 29
  • 28
  • 29
  • 29
  • 58
  • 58 < 58 < 58 05/24/07 -05/31/07 < 44 < 44
  • 44 < 44
  • 35
  • 35 < 35 < 35 05/31/07 -06/07/07 < 15
  • 15
  • 15
  • 15
  • 32
  • 32 < 32 < 32 06/07/07 -06/14/07 < 24
  • 24
  • 25
  • 20
  • 26
  • 26 < 24 < 26 06/14/07 -06/21/07 < 36
  • 26
  • 26
  • 26
  • 36
  • 36 < 36 < 36 06/21/07 -06/28/07 < 42
  • 45 < 45 < 45
  • 37
  • 37 < 35 < 37 06/28/07 -07/05/07 < 32
  • 32
  • 32
  • 32
  • 31
  • 31 < 31 < 31 07/05/07 -07/12/07 < 60
  • 60
  • 59
  • 60
  • 45
  • 45 < 46 < 45 07/12/07 -07/19/07 < 14
  • 14
  • 14
  • 14
  • 18
  • 18 < 19. <18 07/19/07 -07/26/07 < 31
  • 47
  • 47
  • 47
  • 31
  • 19 < 31 < 31 07/26/07 -08/02/07 < 55
  • 57
  • 59
  • 57
  • 45 < 45 < 45 < 45 08/02/07 -08/09/07 < 28
  • 28
  • 28 < 34
  • 24 < 24 < 24 < 24 08/09/07 -08/16/07 < 23
  • 54
  • 54
  • 54
  • 34 < 34 < 34 < 34 08/16/07 -08/23/07 < 63
  • 63
  • 62
  • 63
  • 60
  • 59 < 59 < 59 08/23/07 -08/30/07 < 36
  • 54 *<34
  • 34
  • 33
  • 23 < 31 < 32 08/30/07 -09/06/07 < 69
  • 68
  • 68
  • 68
  • 63
  • 63 < 64 < 63 09/06/07 -09/13/07 < 58
  • 34
  • 58
  • 58
  • 56
  • 56 < 56 < 56 09/13/07 -09/20/07 < 34
  • 34
  • 34
  • 34 < 42 < 42 *<35 < 42 09/20/07 -09/27/07 < 51
  • 51
  • 28
  • 51
  • 46 < 46 < 58 < 46 09/27/07 -10/04/07 < 57
  • 57
  • 57
  • 57
  • 62
  • 62 < 62 < 62 10/04/07 -10/11/07 < 64
  • 64
  • 64 < 64
  • 59
  • 60 < 60 < 60 10/11/07 -10/18/07 < 37
  • 38
  • 37
  • 25
  • 67
  • 68 < 37 < 68 10/18/07 -10/25/07 < 20
  • 20
  • 20
  • 20
  • 39
  • 42 < 42 < 42 10/25/07 -11/01/07 < 41
  • 17
  • 17
  • 17
  • 23
  • 41 (1) < 41 11/01/07 -11/08/07 < 61
  • 59
  • 61
  • 61
  • 60
  • 61 (1) < 60 11/08/07 -11/15/07 < 65
  • 65
  • 65
  • 65
  • 64
  • 65 < 22 < 36 11/15/07 -11/21/07 < 53
  • 53
  • 53
  • 53
  • 56
  • 56 < 56 < 56 11/21/07 -11/29/07 < 26
  • 39
  • 39
  • 39
  • 26
  • 14 < 26 < 26 11/29/07 -12/06/07 < 43 < 43
  • 43 < 43
  • 50
  • 50 *<50 < 50 12/06/07 -12/13/07 < 21
  • 22
  • 22
  • 22
  • 21 < 11 < 21 < 21 12/13/07 -12/20/07 < 20
  • 20
  • 20
  • 20
  • 18
  • 21 < 18 < 18 12/20/07 -12/27/07 < 36
  • 36
  • 36
  • 37
  • 34
  • 34 < 34 < 34 12/27/07 -01/03/08 < 53
  • 55
  • 55
  • 55
  • 34
  • 35 < 35 < 35 MEAN- - -

(1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C -17

TABLE C-VIII.1 CONCENTRATIONS OF 1-131 IN MILK SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA CONTROL FARM I INDICATOR FARM COLLECTION BD-18 BD-17 PERIOD 01/04/07

  • 0.8
  • 0.7 02/01/07 < 0.4 < 0.4 03/01/07 < 0.6 < 0.8 04/05/07 < 0.7 < 0.5 05/04/07 < 0.6
  • 0.5 05/18/07 < 0.5 < 0.5 06/01/07 < 0.6
  • 0.6 06/15/07 < 0.6 < 0.6 06/29/07 < 0.7 < 0.8 07/13/07 < 0.6 < 0.7 07/27/07 < 0.5 < 0.5 08/09/07 < 0.5 < 0.9 08/24/07 < 0.8 < 0.6 09/06/07 < 0.5 < 0.6 09/21/07 < 0.4 < 0.6 10/05/07 < 0.7 < 0.7 10/19/07 < 0.7 < 0.5 11/01/07 < 0.9 < 0.8 12/06/07 < 0.7 < 0.8 MEAN C-18

TABLE C-VIII.2 CONCENTRATIONS OF GAMMA EMITTERS IN MILK SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-17 01/04/07 <6 <5 < 12 <5 < 13 <6 <9 <4 <5 < 20 <8 02/01/07 <6 <7 < 14 <5 < 16 <5 <9 <5 <6 < 27 <8 03/01/07 <5 <6 < 13 <6 < 11 <5 < 10 <5 <6 < 25 <9 04/05/07 <6 <7 < 14 <7 < 16 <7 < 12 <5 <7 < 36 < 11 05/03/07 <5 <5 < 12 <4 < 12 <5 <9 <4 <4 < 29 <8 05/17/07 <6 <8 < 14 <8 < 15 <7 < 13 <6 <7 < 36 <7 05/31/07 <4 <4 < 10 <4 <9 <5 <7 <4 <4 < 29 < 10 06/14/07 <3 <4 < 11 <3 <9 <4 <7 <3 <3 < 31 <9 06/28/07 <6 <7 < 16 <7 < 15 <7 < 11 <5 <6 < 59 < 14 07/12/07 <3 <5 < 10 <4 < 11 <5 <7 <4 <5 < 27 <6 07/26/07 <5 <6 < 13 <5 < 14 <6 <9 <5 <5 < 31 < 11 08/09/07 <5 <6

  • 14 <7 < 15 <6 < 10 <5 <6 < 34 <9 08/23/07 <4 <5 < 13 <5 < 10 <5 <8 <4 <5 < 57 < 13 09/06/07 <6 <7 < 15 <7 < 14 <7 *13 <6 <6 < 41 < 10 09/20/07 <5 <5 < 14 <5 < 12 <5 < 10 <5 <6 < 30 < 10 10/04/07 <7 <7 < 21 <9 < 19 < 10 < 17 <8 <8 < 53 < 14 10/18/07 <2 <2 <6 <3 <6 <3 <4 <2 <2 < 20 <7 11/01/07 <6 <6 < 16 <7 < 15 <7 < 12 <5 <6 < 42 < 15 12/06/07 <5 <5 < 14 <6 < 12 <6 < 10 <5 <5 < 36 < 13 MEAN

TABLE C-VIII.2 CONCENTRATIONS OF GAMMA EMITTERS IN MILK SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-18 01/04/07 <7 <7 <16 <9 <17 <7 < 11 <6 <6 <29 < 12 02/01/07 <6 < 10 <18 <8 <21 <8 < 15 <7 <8 < 39 < 15 03/01/07 <5 <5 <13 <5 <13 <5 <8 <4 <6 <23 <7 04/05/07 <5 <5 <13 <6 <12 <5 <9 <5 <5 < 29 < 10 05/04/07 <4 <5 <11 <5 <10 <5 <8 <4 <5 <31 <7 05/18/07 <5 <5 <11 <5 <11 <5 <8 <4 <5 <23 <6 06/01/07 <5 <6 <14 <5 <11 <6 <9 <5 <5 <40 < 12 06/15/07 <4 <5 <12 <4 <12 <5 <9 <4 <4 <44 < 13 0 06/29/07 <5 <3 <12 <5 <10 <5 <9 <3 <4 <35 < 13 07/13/07 <6 <6 <15 <7 <14 <7 < 11 <5 <6 <38 <9 07/27/07 <6 <5 <16 <6 <14 <7 < 12 <5 <6 < 38 < 13 08/08/07 <6 <6 <13 <7 <13 <7 < 11 <5 <6 < 35 < 12 08/24/07 <4 <4 <11 <3 <9 <5 <9 <4 <3 < 37 < 14 09/06/07 <8 <9 <22 <9 <19 <7 < 14 <7 <7 <43 < 15 09/21/07 <4 <5 <11 <5 <12 <5 <9 <4 <5 <27 <7 10/05/07 <7 <8 <17 <8 <16 <7 < 10 <7 <8 <45 < 13 10/19/07 <2 <2 <6 <2 <5 <2 <4 <2 <2 <18 <6 11/01/07 <7 <7 <19 <8 <17 <8 < 11 <6 <6 <44 <14 12/06/07 <6 <8 <19 <6 <17 <8 < 14 <6 <7 < 54 < 13 MEAN

TABLE C-IX.1 CONCENTRATIONS OF GAMMA EMITTERS IN VEGETATION SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PC/KG WET +/- 2 SIGMA STC COLLECTION Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 PERIOD BD-CONTROL 09/13/07 Leeks <4 < 5 < 14 < 5 < 11 < 5 < 9 < 4 < 5 <40 < 13 09/13/07 Swiss Chard

  • 6 < 7 < 18 < 6 < 17 < 7 < 12 < 5 < 6 < 51 < 13 MEAN BD-QUAD 1 09/13/07 Cabbage <6 <6 <16 <6 <14 <6 <11 <5 11+/- 6 <52 < 12 09/13/07 Turniips <6 <6 <15 <6 <13 <7 <10 <5 11+/- 5 <49 < 13 MEAN* 11 +/- 0 BD-QUAD 2 09/08/07 Cabbage < 15 < 11 < 35 < 13 < 31 < 14 < 20 < 12 < 13 <60 < 21 09/08/07 Onions
  • 16 < 17 <.34 < 19 < 38 < 16 < 30 < 15 < 18 < 76 < 21 MEAN BD-QUAD 3 09/08/07 Cabbage < 14 < 12 < 43 < 17 < 38 < 17 < 24 < 12 < 16 < 84 < 15 09/08/07 Sweet potatoes < 21 < 17 < 56 < 19 < 36 < 25 < 33 < 14 < 24 < 113 <41 MEAN BD-QUAD 4 09/13/07 Beet greens <6 < 7 < 21 < 7 < 17 < 8 < 14 < 5 <7 < 53 < 13 09/13/07 Beets <8 < 9 < 24 < 8 < 19 < 10 < 17 < 7 <8 < 75
  • 20 MEAN
  • THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES

TABLE C-X.1 QUARTERLY TLD RESULTS FOR BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER +/-2 STANDARD DEVIATIONS STATION MEAN JAN - MAR APR - JUN JUL - SEP OCT - DEC CODE +/-- 2 S.D.

BD-02-1 21.8 +/- 15.3 33 20 17 17 BD-02-2 21.5 +/- 15.9 33 20 15 18 BD-03-1 22.3 +/- 18.6 36 20 16 17 BD-03-2 23.5 +/- 18.5 37 21 16 20 BD-04-1 22.3 +/- 18.6 36 20 16 17 BD-04-2 22.8 +/- 18.0 36 20 16 19 BD-05-1 24.5 +/- 15.8 36 22 18 22 BD-05-2 23.8 +/- 13.9 34 22 20 19 BD-06-1 20.8 +/- 15.4 32 19 15 17 BD-06-2 20.8 +/- 15.3 32 18 15 18 BD-19-1 23.5 +/- 18.2 37 21 18 18 BD-19-2 21.5 +/- 15.7 33 20 16 17 BD-20-1 22.0 +/- 15.1 33 20 16 19 BD-20-2 22.5 +/- 14.1 33 19 18 20 BD-21-1 21.5 +/- 15.7 33 20 16 17 BD-21-2 22.0 +/- 16.2 34 20 17 17 BD-101-3 22.0 +/- 15.2 33 21 16 18 BD-101-4 23.0 +/- 19.1 37 21 16 18 BD-102-1 21.3 +/- 14.5 32 19 16 18 BD-102-2 22.8 +/- 13.8 33 20 18 20 BD-103-1 22.3 +/- 16.2 34 21 16 18 BD-103-2 23.3 +/- 14.9 34 22 17 20 1D-1 04-1 20.8 +/- 16.7 33 19 15 16 BD-104-2 21.8 +/- 19.2 36 18 15 18 BD-1 05-1 21.0 +/- 15.1 32 20 16 16 BD-105-2 22.5 +/- 18.2 36 19 16 19 BD-106-1 21.8 +/- 13.9 32 20 18 17 BD-106-2 23.3 +/- 17.2 36 20 17 20 BD-107-1 22.0 +/- 16.3 34 20 16 18 BD-107-2 20.8 +/- 15.4 32 19 15 17 BD-108-1 21.0 +/- 15.1 32 19 15 18 BD-108-2 23.5 +/- 19.4 38 20 18 18 BD-109-1 26.3 +/- 19.7 41 22 21 21 BD-109-2 25.3 +/- 18.8 39 23 18 21 BD-110-1 22.0 +/- 14.9 33 20 18 17 BD-110-2 22.0 +/- 16.6 34 21 16 17 BD-112-1 21.5 +/- 18.5 35 19 14 18 BD-112-2 21.3 +/- 15.9 33 19 16 17 BD-1 14-1 22.0 +/- 15.1 33 20 16 19 BD-114-2 22.5 +/- 15.4 34 20 18 18 BD-115-1 23.3 +/- 18.5 37 20 17 19 BD-115-2 21.5 +/- 17.2 34 20 15 17 BD-116-1 23.3 +/- 12.4 32 20 18 23 BD-116-2 21.5 +/- 14.3 32 19 16 19 C - 22

TABLE C-X.1 QUARTERLY TLD RESULTS FOR BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER +/- 2 STANDARD DEVIATIONS STATION MEAN JAN - MAR APR - JUN JUL - SEP OCT - DEC CODE +/-- 2 S.D.

m I BD-201-1 25.5 +/- 15.5 37 22 BD-201-2 24.3 +/- 18.5 38 20 BD-202-1 23.5 +/- 17.2 36 19 BD-202-2 21.8 +/- 13.8 32 19 BD-203-1 22.3 +/- 16.0 34 19 BD-203-2 21.8 +/- 16.5 34 18 BD-204-1 22.3 +/- 18.4 36 17 BD-204-2 21.0 +/- 17.4 34 16 BD-205-1 21.0 +/- 15.1 32 18 BD-205-2 21.3 + 13.3 31 17 BD-206-1 23.0 +/- 14.7 34 19 BD-206-2 23.0 +/- 14.8 34 20 BD-207-1 21.0 +/- 13.9 31 19 BD-207-2 23.3 +/- 16.2 35 22 BD-208-1 22.0 +/- 16.2 34 17 BD-208-2 21.5 +/- 14.4 32 16 BD-209-1 24.8 +/- 13.8 35 22 BD-209-2 28.5 +/- 19.5 43 24 BD-210-1 25.5 +/- 14.1 36 23 BD-210-2 22.8 + 18.0 36 19 BD-21 1-1 25.8 + 15.6 37 23 BD-211-2 26.3 +/- 15.3 37 24 BD-212-3 21.8 +/- 15.4 33 18 BD-212-4 26.8 +/- 12.6 36 24 BD-213-3 21.3 +/- 16.2 33 17 BD-213-4 21.8 + 14.5 32 20 BD-214-1 24.0 +/- 18.8 38 19 BD-214-2 25.5 +/- 14.3 36 23 BD-215-1 21.5 +/- 15.5 33 18 BD-215-2 21.0 +/- 16.1 33 17 BD-216-1 23.3 +/- 14.5 34 21 BD-216-2 24.8 +/- 17.8 38 19 BD-111A-1 21.8 +/- 13.8 32 19 RD-111A-2 22.0 +/- 15.1 33 20 BD-113A-1 22.3 +/- 15.8 34 19 BD-1i13A-2 21.8 +/- 13.8 32 19 C - 23

TABLE C-X.2 MEAN QUARTLY TLD RESULTS FOR THE INNER RING, OUTER RING, OTHER AND CONTROL LOCATIONS FOR BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF MILLI-ROENTGENS/QUARTER +/- 2 STANDARD DEVIATIONS OF THE STATION DATA SITE INTERMEDIATE COLLECTION BOUNDARY DISTANCE OTHER CONTROL PERIOD +/- 2 S.D.

JAN-MAR 34.1 +/- 4.6 34.8 +/- 5.1 33.9 +/- 3.3 36.5 +/- 1.4 APR-JUN 19.9 +/- 2.2 20.8 +/- 4.0 20.1 +/- 2.1 20.5 +/- 1.4 JUL-SEP 16.6 +/- 2.7 17.7 +/- 4.0 16.6 +/- 2.9 16.0 +/- 0.0 OCT-DEC 18.5 +/- 3.0 19.7 +/- 4.9 18.2 +/- 3.0 18.5 +/- 4.2 TABLE C-X.3

SUMMARY

OF THE AMBIENT DOSIMETRY PROGRAM FOR BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER LOCATION SAMPLES PERIOD PERIOD PERIOD MEAN ANALYZED MINIMUM MAXIMUM +/- 2 S.D.

SITE BOUNDARY 128 14.0 41.0 22.3 +/- 14.3 INTERMEDIATE DISTANCE 128 15.0 43.0 23.2 +/- 14.3 OTHER 56 15.0 37.0 22.2 +/- 14.1 CONTROL 8 16.0 37.0 22.9 +/- 17.3 SITE BOUNDARY STATIONS - BD-101-3, BD-101-4, BD-102-1, BD-102-2, BD-103-1, BD-103-2, BD-104-1, BD-104-2, BD-105-1, BD-105-2, BD-106-1, BD-106-2, BD-107-1, BD-107-2, BD-108-1, BD-108-2, BD-109-1, BD-109-2, BD-110-1, BD-110-2, BD-111A-1, BD-111A-2, BD-112-1, BD-112-2, BD-113A-1, BD-113A-2, BD-114-1, BD-114-2, BD-115-1, BD-115-2, BD-116-1, BD-116-2 INTERMEDIATE DISTANCE STATIONS - BD-201-1, BD-201-2, BD-202-1, BD-202-2, BD-203-1, BD-203-2, BD-204-1, BD-204-2, BD-205-1, BD-205-2, BD-206-1, BD-206-2, BD-207-1, BD-207-2, BD-208-1, BD-208-2, BD-209-1, BD-209-2, BD-210-1, BD-210-2, BD-211-1, BD-211-2, BD-212-3, BD-212-4, BD-213-3, BD-213-4, BD-214-1, BD-214-2, BD-215-1, BD-215-2, BD-216-1, BD-216-2 OTHER STATIONS - BD-02-1, BD-02-2, BD-04-1, BD-04-2, BD-05-1, BD-05-2, BD-06-1, BD-06-2, BD-19-1, BD-19-2, BD-20-1, BD-20-2, BD-21-1, BD-21-2 CONTROL STATIONS - BD-03-1, BD-03-2 C - 24

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

Collected in the Vicinity of Braidwood Station, 2000 - 2004 BD-1 0 Kankakee River, Downstream M0.0

-J (3

0.0 !-

01-01-00 12-31-00 12-31-01 12-31-02 12-31-03 12-30-04 10.0 Kankakee River,

-J (3

4.0 2.0 00o4-01-01-00 12-3i-00 12-31-01 1231-02 12-31-03 12-30-04 C - 25

FIGURE C-1 (cont.)

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

Collected in the Vicinity of Braidwood Station, 2005 - 2007 BD-10 Kankaee River, Downstream 10.0 8.0

-J 6.0 a.

4.0 2.0 0.04-01-27-05 10-20-05 07-13-06 04-05-07 12-27-07 BD-25 (C) Kankakee River, Upstream a..

01-27-05 10-20-05 07-13-06 04-05-07 12-27-07 DUE TO VENDOR CHANGE IN 2005, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JUNE 2005 C - 26

FIGURE C-2 Surface Water - Gross Beta - Stations BD-38 and BD-40 Collected in the Vicinity of Braidwood Station, 2007 BD-38 Main Drainage Ditch 14.0--

12.0 10.0 8.0 C 6.0 4.0 2.0--

0.01 7 1 01-25-07 07-12-07 12-27-07 BD-40 Braidwood Station Cooling Lake 16.0-14.0-12.0-10.0,

.-J C.) 8.0-6.0-4.0-2.0-0.0 10-05-06 03-03-07 07-30-07 12-26-07 NEW STATION BD-40 ADDED ON 10/05/06 NEW STATION BD-38 ADDED ON 01/25/07 C - 27

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

,,J U3 8.0-6.0 4.0 2.0 I

0.0 01-2 5-07 07-12-07 12-27-07 BD-56 South Pond Fatlan Site 8.0 6.0

,J C., 4.0 2.0 0.0 i 01-25-07 07-12-07 12-27-07 NEW STATIONS BD-55 AND BD-56 ADDED ON 01/04/07 C - 28

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

Collected in the Vicinity of Braidwood Station, 2000 - 2004 2600 -

BD-1 0 Kankakee River, Downstream 2300 2000 1700 1400

-j 1100.

800 500

-IGO 4--

01-01-00 12-31-00 12-31-01 12-31-02 12-31-03 12-30-04 BD-25 Kankakee River, Upstream 400 300 200

,-J U-# 100 0

-200 -

01-01-00 12-31-00 12-31-01 12-31-02 12-31-03 12-30-04 C - 29

FIGURE C-4 (cont.)

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

Collected in the Vicinity of Braidwood Station, 2005 - 2007 BD-10 Kankakee River, Downstream 2400 2100 1800

. 1500

' 1200.,

900, 600-300 n I I I I 03-31-05 10-17-05 05-05-06 11-21-06 06-09-07 12-26-07 BD-25 (C) Kankakee River, Upstream 400 r 300o-200 C.)

1004-0 ! I I I I 03-31-05 10-17-05 05-05-06 11-21-06 06-09-07 12-26-07 DUE TO VENDOR CHANGE IN 2005, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JUNE 2005 C-30

FIGURE C-5 Surface Water - Tritium - Stations BD-38 (C) and BD-40 Collected in the Vicinity of Braidwood Station, 2006 - 2007 BD-38 Main Drainage Ditch 2400-2100-1800-

-J 1500-C.) 1200-a.

900.

600 300 0

03-09-06 10-14-06 05-21-07 12-26-07 BD-40 Braidwood Station Cooling Lake 400° 300 '

200-C.)

1004-(1 I 07/20/06 04/08/07 12/26/07 NEW STATIONS BD-38 AND BD-40 ADDED IN 2006 C-31

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

Q-0.

100+

50+

0i 03-29-07 06-28-07 09-27-07 12-27-07 BD-56 South Pond Fatlan Site 250 -

200 -

150-100+

50 -I 0h 03/29/07 06/28/07 09/27/07 12/27/07 NEW STATIONS BD-55 AND BD-56 ADDED IN 2007 C- 32

FIGURE C-7 Public Water - Gross Beta - Station BD-22 Collected in the Vicinity of Braidwood Station, 2000 - 2004 BD-22 Wilmington 8.0 1o16 8,0 0.0 01-01 00 12.31,.00 12,31-01 12-3t-02 12-31-03 '12.30-04 C-33

FIGURE C-7 (cont.)

Public Water - Gross Beta - Station BD-22 Collected in the Vicinity of Braidwood Station, 2005 - 2007 BD-22 Wilmington 10.0 -

8.0+

6.0+

a.

4.0 2.0+

0.0 I I I I 01-01-05 07-02-05 12-31-05 07-01-06 12-30-06 06-30-07 12-29-07 DUE TO VENDOR CHANGE, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JUNE 2005 C-34

FIGURE C-8 Public Water - Tritium - Station BD-22 Collected in the Vicinity of Braidwood Station, 2000 - 2004 BD-22 Wilmington 7600 7200 6800 6400 6000, 5600-5200 4800 4400 -

4000 3*600 3200 2800 2400 2000D 1600 1200D 800 400 0

01 ..01..00 12-3,3t00 12-31-01 12-31 -02 ! 2-31-03 12-30-(*4 C- 35

FIGURE C-8 (cont.)

Public Water - Tritium - Station BD-22 Collected in the Vicinity of Braidwood Station, 2005 - 2007 BD-22 Wilmington 7600 7200 6800 6400 6000 5600 5200 4800 4400 4000 3600 3200 2800-2400 2000 1600 1200 800 400 0

01-01-05 07-02-05 12-31-05 07-01-06 12-30-06 06-30-07 12-29-07 DUE TO VENDOR CHANGE, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JUNE 2005 C- 36

FIGURE C-9 Ground/Well Water - Tritium - Stations BD-13 and BD-34 Collected in the Vicinity of Braidwood Station, 2000 - 2004 "m T BD-1 3 Braidwood City Hall Weii 400 +

300 4-200 +

0.,

lo0 +

7 if 0

-100 *1.

-200 I II

  • I i I 12-31 -00 12-31-01 12-31-02 12-31-03 12-30-04 01-01-00 700 T BD-34 Gibson Well 5DO -I 400 300 200.

100 0

-100 1 I 01-01-0M 12-31-00 12-31-01 12-31-02 12-31"3 12-30-04 C- 37

FIGURE C-9 (cont.)

Ground/Well Water - Tritium - Stations BD-13 and BD-34 Collected in the Vicinity of Braidwood Station, 2005 - 2007 BD-13 Braidwood City Hall Well 500 T 400 +

-I 300 -

a.

200 100 --

01 I I I I I 03-31-05 10-03-05 04-07-06 10-10-06 04-14-07 10-17-07 BD-34 Gibson Well 700 .-

600 +

500.

-j 400-Q.

300o 200 100*

l o4-l 03-31-05 10-03-05 04-07-06 10-10-06 04-14-07 10-17-07 DUE TO VENDOR CHANGE IN 2005, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUES JULY THROUGH DECEMBER C-38

FIGURE C-10 Ground/Well Water - Tritium - Stations BD-35 and BD-36 Collected in the Vicinity of Braidwood Station, 2000 - 2004 500 BD-35 Joly Well 400 300 200 a.

100 7Z 0

01-01-00 12-31-W IZ31 -01 12-31-02 12-31-03 f2-30-04 BD-36 Hutton Well 900 700 600 I

500 A --- 'V CL 400 /'~N/ \~,

200 100 0

01-01.-00 12-31-00 12-31-01 12-31-02 12-31-03 2-30-04 C- 39

FIGURE C-10 (cont.)

Ground/Well Water - Tritium - Stations BD-35 and BD-36 Collected in the Vicinity of Braidwood Station, 2005 - 2007 BD-35 Joly Well 500 -

400 +

300 4r

(-)

200, 100 +

o04-03-31-05 10-03-05 04-07-06 10-10-06 04-14-07 10-17-07 BD-36 Hutton Well 1200 1000 800

-J C.) 600 400 200 0o-03-31-05 10-03-05 04-07-06 10-10-06 04-14-07 10-17-07 DUE TO VENDOR CHANGE, <VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUES JULY THROUGH DECEMBER C - 40

FIGURE C-ll Ground/Well Water - Tritium - Station BD-37 Collected in the Vicinity of Braidwood Station, 2000 - 2004 BD-37 Nurczyk Well 450 T 350+

250+

-j 150+

CL 501 K

N' /\,

-vO >1

-150 I -~ - -~

01-01-00 12-31-00 12-31-01 12-31-02 12-31-03 123--04 C-41

FIGURE C-11 (cont.)

Ground/Well Water - Tritium - Station BD-37 Collected in the Vicinity of Braidwood Station, 2005 - 2007 BD-37 Nurczyk Well 600 500 400 LJ CL 300 200 100 0

03-31-05 10-03-05 04-07-06 10-10-06 04-14-07 10-17-07 DUE TO VENDOR CHANGE IN 2005, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE AND MDC VALUES JULY THROUGH DECEMBER C - 42

FIGURE C-12 Ground/Well Water - Tritium - Station BD-50 and BD-51 Collected in the Vicinity of Braidwood Station, 2007 BD-50 Skole Well 1000 -

900-800-700 -

600-500 -

0.

400-300 -

200-100-1 01-01-07 04-07-07 07-12-07 10-16-07 BD-51 Fatlan Well 600+

500+

400+

-I C.)

0. 300 4 200 100-0I i i i 01-03-07 04-09-07 07-14-07 10-18-07 NEW STATIONS BD-50 AND BD-51 ADDED IN 2007 C - 43

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

500 -I 400+

C.

300 4-200 -

p 100 -

0o1-01-03-07 04-09-07 07-14-07 10-18-07 BD-54 Cash Well 600 5004-400+

C. 300+

200.

-0 100.

01 01-03-07 04-09-07 07-14-07 10-18-07 NEW STATIONS BD-53 AND BD-54 ADDED IN 2007 C-44

FIGURE C-14 Air Particulates - Gross Beta- Stations BD-03 (C) and BD-06 Collected in the Vicinity of Braidwood Station, 2000 - 2004 BD-03 (C) County Line Road 10.0 8.0, 6.0 4,0 2,0 01-01-00 12-31-00 12-31-01 12-31-02 12-31-03 12-30-04 BD-06 Godley i0.0

&k0 6.0 N

Uj

_ 4.0 2.0 0,0 .................. ... ...3...

...... 2....

2.....

01-01-00 12 *00 12-31-01 12-31-02 12-31-03 12-30-04 C - 45

FIGURE C-14 (cont.)

Air Particulates - Gross Beta- Stations BD-03 (C) and BD-06 Collected in the Vicinity of Braidwood Station, 2005 - 2007 BD-03 (C) County Line Road 82.1 E

C.)

0.

UJ m-C 0.0 i I I I I I I 01/06/05 07/07/05 01/05/06 07/06/06 01/04/07 07/05/07 01/03/08 BD-06 Godley 50.0 40.0 m

30.0

.)

CL 20.0 w

5!

10.0 0.0 I I I I I i I 01-06-05 07-07-05 01-05-06 07-06-06 01-04-07 07-05-07 01-03-08 DUE TO VENDOR CHANGE, THE REPORTED UNITS CHANGED FROM E-02 PCI/M3 TO E-03 PCI/M3 C - 46

FIGURE C-15 Air Particulates - Gross Beta- Stations BD-19 and BD-20 Collected in the Vicinity of Braidwood Station, 2000 - 2004 BD-19 Nearsite, NW 10.0, 8.0 i X 6.0 S4ý0 2.0 01-01-00 12-31-00 12-31-01 12-31-02 12-31-03 12-30-04 BD-20 Nearsite, N 10.0 8,0 6,0 4,0 2,0 (1.0 ............

01-01-00 12-31-C0 12-31-01 12-31-02 12-31,03 12-30-G4 C - 47

FIGURE C-15 (cont.)

Air Particulates - Gross Beta- Stations BD-19 and BD-20 Collected in the Vicinity of Braidwood Station, 2005 - 2007 BD-19 Nearsite, NW 50.0 40.0 E

30.0 20.0 10.0 0.0 i I I I I I 01-06-05 07-07-05 01-05-06 07-06-06 01-04-07 07-05-07 01-03-08 BD-20 Neasite, N 50.0 40.0 E

30.0 C,

0.

LU 0~ 20.0 10.0 0.0 I I I I I I 01-06-05 07-07-05 01-05-06 07-06-06 01-04-07 07-05-07 01-03-08 DUE TO VENDOR CHANGE, THE REPORTED UNITS CHANGED FROM E-02 PCI/M3 TO E-03 PCI/M3 C - 48

FIGURE C-16 Air Particulates - Gross Beta- Station BD-21 Collected in the Vicinity of Braidwood Station, 2000 - 2004 BD-21 Nearsite, NE 10.0 3.0 ow4+

24.

2.0 0.0.

01-01-00 12-31-00 12-31-01 12-31-02 12-31-03 12-30-04 C - 49

FIGURE C-16 (cont.)

Air Particulates - Gross Beta- Station BD-21 Collected in the Vicinity of Braidwood Station, 2005 - 2007 BD-21 Nearsite, NE 60.0 50.0 40.0 C'L30.0 9

'U o 20.0 10.0 0 .0 1 I I I 01-06-05 07-07-05 01-05-06 07-06-06 01-04-07 07-05-07 01-03-08 DUE TO VENDOR CHANGE, THE REPORTED UNITS CHANGED FROM E-02 PCI/M3 TO E-03 PCI/M3 C-50

FIGURE C-17 Air Particulates - Gross Beta- Stations BD-02 and BD-04 Collected in the Vicinity of Braidwood Station, 2005 - 2007 BD-02 Nearsite, NW 50.0 -

40.0 +

E C.)

0.

30.0 -I Q,

CL C? 20.0 +

w-10.0 +

nIi I I 01-06-05 07-07-05 01-05-06 07-06-06 01-04-07 07-05-07 01-03-08 BD-04 Neasite, N 60.0 T 50.0 +

E 40.0 +

0.

30.0 -

9 LU m

C-20.0 +

10.0+

0.0 I I I I I 01-06-05 07-07-05 01-05-06 07-06-06 01-04-07 07-05-07 01-0 3-08 DUE TO VENDOR CHANGE, THE REPORTED UNITS CHANGED FROM E-02 PCI/M3 TO E-03 PCI/M3 C-51

FIGURE C-18 Air Particu~ates - Gross Beta- Station BD-05 Collected in the Vicinity of Braidwood Station, 2005 - 2007 BD-05 Nearsite, NE 60.0 -

50.04-40.0+

CL C.)

30.0 -4 LM 0

20.0+

10.0+

0.04 01-06-05 07-07-05 01-05-06 07-06-06 01-04-07 07-05-07 01-03-08 DUE TO VENDOR CHANGE, THE REPORTED UNITS CHANGED FROM E-02 PCI/M3 TO E-03 PCI/M3 C - 52

APPENDIX D INTER-LABORATORY COMPARISON PROGRAM

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2007 (PAGE 1 OF 3)

Identification Reported Known Ratio (c)

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

March 2007 E5255-396 Milk Sr-89 pCi/L 125 137 0.91 A Sr-90 pCi/L 10.8 10 1.08 A E5256-396 Milk 1-131 pCi/L 107 85.2 1.26 W Ce-141 pCi/L 269 297 0.91 A Cr-51 pCi/L 244 245 1.00 A Cs-1 34 pCi/L 98.1 112 0.88 A Cs-1 37 pCi/L 227 234 0.97 A Co-58 pCi/L 92.5 98.8 0.94 A Mn-54 pCi/L 182.0 182 1.00 A Fe-59 pCi/L 108.0 106 1.02 A Zn-65 pCi/L 985 1000 0.99 A Co-60 pCi/L 143 152 0.94 A E5258-396 AP Ce-141 pCi 252 245 1.03 A Cr-51 pCi 204 202 1.01 A Cs-1 34 pCi 74.9 92.3 0.81 A Cs-1 37 pCi 190.0 197.0 0.96 A Co-58 pCi 79.7 81.6 0.98 A Mn-54 pCi 156 151 1.03 A Fe-59 pCi 99.1 87.2 1.14 A Zn-65 pCi 894 826 1.08 A Co-60 pCi 122 126 0.97 A E5257-396 Charcoal 1-131 pCi 34.7 71.3 0.49 N (1)

June 2007 E5384-396 Milk Sr-89 pCi/L 98.3 95.2 1.03 A Sr-90 pCi/L 16.1 12.9 1.25 W E5385-396 Milk 1-131 pCi/L 71.0 70.1 1.01 A Ce-141 pCi/L 176 200 0.88 A Cr-51 pCi/L 459 512 0.90 A Cs-1 34 pCi/L 197 242 0.81 A Cs-137 pCi/L 158 169 0.93 A Co-58 pCi/L 180 198 0.91 A Mn-54 pCi/L 163 166 0.98 A Fe-59 pCi/L 158 167 0.95 A Zn-65 pCi/L 318 334 0.95 A Co-60 pCi/L 212 238 0.89 A E5387-396 AP Ce-141 pCi 87.5 105 0.83 A Cr-51 pCi 232 268 0.87 A Cs-134 pCi 101 127 0.80 A Cs-137 pCi 78.9 88.5 0.89 A Co-58 pCi 91.8 104.0 0.88 A Mn-54 pCi 85.6 87 0.99 A Fe-59 pCi 89.8 87.3 1.03 A Zn-65 pCi 178 175 1.02 A Co-60 pCi ill 125 0.89 A E5386-396 Charcoal 1-131 pCi 79.3 79.1 1.00 A D-1

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2007 (PAGE 2 OF 3)

Identification Reported Known Ratio (c)

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

September 2007 E5492-396 Milk Sr-89 pCi/L 99.0 94.9 1.04 A Sr-90 pCi/L 13.9 13.1 1.06 A E5493-396 Milk 1-131 pCi/L 81.9 85.2 0.96 A Ce-141 pCi/L 200 211 0.95 A Cr-51 pCi/L 271 289 0.94 A Cs-1 34 pCi/L 131 147 0.89 A Cs-1 37 pCi/L 131 131 1.00 A Co-58 pCi/L 114 114 1.00 A Mn-54 pCi/L 171 168 1.02 A Fe-59 pCi/L 117 111 1.05 A Zn-65 pCi/L 212 202 1.05 A Co-60 pCi/L 143 148 0.97 A E5495-396 AP Ce-141 pCi 128 136 0.94 A Cr-51 pCi 181 186 0.97 A Cs-134 pCi 85.9 94.7 0.91 A Cs-1 37 pCi 83.2 83.9 0.99 A Co-58 pCi 69.4 73.3 0.95 A Mn-54 pCi 112 108 1.04 A Fe-59 pCi 79.6 71.1 1.12 A Zn-65 pCi 159 130 1.22 W Co-60 pCi 92.0 95.2 0.97 A E5494-396 Charcoal 1-131 pCi 70.8 69.5 1.02 A December 2007 E5749-396 Milk Sr-89 pCi/L 87.6 93.7 0.93 A Sr-90 pCi/L 15.5 15.2 1.02 A E5750-396 Milk 1-131 pCi/L 60.6 60.8 1.00 A Ce-141 pCi/L 137 141 0.97 A Cr-51 pCi/L 497 512 0.97 A Cs-134 pCi/L 117 137 0.85 A Cs-137 pCi/L 166 166 1.00 A Co-58 pCi/L 159 174 0.91 A Mn-54 pCi/L 190 190 1.00 A Fe-59 pCi/L 149 148 1.01 A Zn-65 pCi/L 231 234 0.99 A Co-60 pCi/L 198 211 0.94 A E5752-396 AP Ce-141 pCi 88.6 93.4 0.95 A Cr-51 pCi 352 340 1.04 A Cs-1 34 pCi 84.6 91.2 0.93 A Cs-1 37 pCi ill 110.0 1.01 A Co-58 pCi 114 116.0 0.98 A Mn-54 pCi 135 126 1.07 A Fe-59 pCi 119 98.5 1.21 W Zn-65 pCi 172 155 1.11 A Co-60 pCi 137 141 0.97 A D-2

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2007 (PAGE 3 OF 3)

Identification Reported Known Ratio (c)

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

December 2007 E5751-396 Charcoal 1-131 pCi 65.8 74.1 0.89 A (1) New technician counted charcoalcartridgeon the back rather than the face, resulting in low activity. If the charcoalcartridge had been counted on the face, the ratio would have been approximately 1.07, which is acceptable. NCR 07-02 (a) Teledyne Brown Engineeringreported result.

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

(c) Ratio of Teledyne Brown Engineeringto Analytics results.

(d) Analytics evaluation based on TBE internal QC limits: A= Acceptable. Reported result falls within ratio limits of 0.80-1.20.

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

D-3

TABLE D-2 ERA ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2007 (PAGE 1 OF 1)

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

July 2007 Rad 70 Water Sr-89 pCi/L 58.6 58.2 49.5-66.9 A Sr-90 pCi/L 18.7 19.0 10.3-27.7 A Ba-1 33 pCi/L 18.6 19.4 10.7-28.1 A Cs-1 34 pCi/L 57.6 68.9 60.2 - 77.6 N (1)

Cs-1 37 pCi/L 55.4 61.3 52.6 - 70.0 A Co-60 pCi/L 31.3 33.5 24.8-42.2 A Zn-65 pCi/L 49.0 54.6 45.2 - 64.0 A Gr-A pCi/L 26.8 27.1 15.4 - 38.8 A Gr-B pCi/L 12 11.5 2.84 - 20.2 A 1-131 pCi/L 31.1 26.5 21.3-31.7 A H-3 pCi/L 1700 1770 1180-2360 A October 2007 RAD 71 Water Sr-89 pCi/L 27.07 27.4 19.3- 33.9 A Sr-90 pCi/L 17.40 18.2 12.9-21.6 A Ba-133 pCi/L 12.57 12.6 8.64- 15.5 A Cs-134 pCi/L 63.33 71.1 58.0 - 78.2 A Cs-1 37 pCi/L 168 180 162 - 200 A Co-60 pCi/L 21.93 23.2 19.9-28.3 A Zn-65 pCi/L 245.33 251 226 - 294 A Gr-A pCi/L 55.60 58.6 30.6 - 72.9 A Gr-B pCi/L 15.23 9.73 4.26- 18.2 A 1-131 pCi/L 27.43 28.9 24.0 - 33.8 A H-3 pCi/L 9263.3 9700 8430- 10700 A (1) The Cs-134 TBE found/ERA known ratio is 83.6%, which TBE considers acceptable. NCR 07-07 (a) Teledyne Brown Engineeringreported result.

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

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

D-4

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

TELEDYNE BROWN ENGINEERING, 2007 (PAGE 1 OF 1)

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

February 2007 07-MaW17 Water Cs-1 34 Bq/L 74.5 83.5 58.5- 108.6 Cs-1 37 Bq/L 162 163.0 114-1 -211.9 Co-57 Bq/L 140 143.7 100.6- 186.8 Co-60 Bq/L 27.9 26.9 18.8- 35.0 H-3 Bq/L 346 283.0 198.1 - 367.9 Mn-54 Bq/L 125 123.8 86.7 - 160.9 Sr-90 Bq/L 8.90 8.87 6.21- 11.53 Zn-65 Bq/L 117 114.8 80.4- 149.2 07-GrW17 Water Gr-A Bq/L 0.502 0.327 >0.0 - 0.654 Gr-B Bq/L 0.975 0.851 0.426 - 1.277 07-MaS17 Soil Cs-1 34 Bq/kg 322 327.4 229.2 - 425.6 Cs-1 37 Bq/kg 893 799.7 559.8 - 1039.6 Co-57 Bq/kg 508.3 471.2 329.8 - 612.6 Co-60 Bq/kg 300.3 274.7 192.3 - 357.1 Mn-54 Bq/kg 779 685.2 479.6 - 890.8 K-40 Bq/kg 682 602 421 - 783 Sr-90 Bq/kg 293 319.0 223.3 - 414.7 Zn-65 Bq/kg 618.7 536.8 375.8 - 697.8 07-RdF17 AP Cs-134 Bq/sample 3.230 1.4960 2.9372 - 5.4548 Cs-1 37 Bq/sample 2.453 2.5693 1.7985 - 3.3401 Co-57 Bq/sample 3.067 2.8876 2.0213 - 3.7539 Co-60 Bq/sample 2.767 2.9054 2.0338 - 3.7770 Mn-54 Bq/sample 3.557 3.5185 2.4630 - 4.5741 Sr-90 Bq/sample 0.584 0.6074 0.4252 - 0.7896 Zn-65 Bq/sample 2.463 2.6828 1.8780 - 3.4876 07-GrF17 AP Gr-A Bq/sample 0.353 0.601 >0.0 - 1.202 Gr-B Bq/sample 0.500 0.441 0.221 - 0.662 February 2007 07-RdV1 7 Vegetation Cs-134 Bq/sample 6.207 6.2101 4.3471 - 8.0731 A Cs-1 37 Bq/sample 7.80 6.9949 4.8964 - 9.0934 A Co-57 Bq/sample 8.64 8.1878 5.7315- 10.6441 A Co-60 Bq/sample 6.10 5.8215 4.0751 - 7.5680 A Mn-54 Bq/sample 9.41 8.4492 5.9144 - 10.9840 A K-40 Bq/sample 63.5 Not evaluated by MAPEP Sr-90 Bq/sample 1.51 1.5351 1.0746 - 1.9956 A Zn-65 Bq/sample 7.15 5.6991 3.9894 - 7.4088 W (a) Teledyne Brown Engineeringreported result.

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

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

D-5

TABLE D-4 ERA(a) STATISTICAL

SUMMARY

PROFICIENCY TESTING PROGRAM ENVIRONMENTAL, INC., 2007 (Page 1 of 2)

Concentration (pCi/L)

Lab Code

  • Date Analysis Laboratory ERA Control Resultb Resultc Limits Acceptance STAP-1116 03/19/07 Gr. Alpha 34.64 +/- 2.56 25.8 12.4 -39 Pass STAP-1116 03/19/07 Gr. Beta 93.41 +/- 3.20 79.5 48.8-116 Pass STAP-1 117 03/19/07 Co-60 1610.00 +/- 8.40 1300.0 1010.0 - 1620 Pass STAP-1117 03/19/07 Cs-1 34 1340.40 +/- 48.84 1120.0 732.0 -1380 Pass STAP-1117 e 03/19/07 Cs-1 37 345.30 +/- 8.20 255.0 192.0 -336 Fail STAP-1117T 03/19/07 Mn-54 <5.0 0.0 Pass STAP-1 117 03/19/07 Sr-90 156.10 +/- 6.60 156.0 66.6-246 Pass STAP-1 117 03/19/07 Zn-65 363.80 +/- 11.90 245.0 208.0 -412 Pass STSO-1118 03/19/07 Ac-228 3097.77 +/- 94.96 2790.0 1790.0 -3930 Pass STSO-1118 03/19/07 Bi-212 2467.87 +/- 114.33 2500.0 658.0 -3730 Pass STSO-1118 03/19/07 Co-60 7847.40 +/- 86.60 7330.0 5340.0 - 9820 Pass STSO-1118 03/19/07 Cs-1 34 7910.60 +/- 356.88 7560.0 4850.0 - 9070 Pass STSO- 1118 03/19/07 Cs-1 37 4635.00 +/- 99.10 4300.0 3290.0 - 5580 Pass STSO-1118 03/19/07 K-40 12201.60 +/- 423.20 11100.0 8050.0 -15000 Pass STSO-1118T 03/19/07 Mn-54 < 34.0 0.0 Pass STSO-1118 03/19/07 Pb-212 2046.80 +/- 127.20 1730.0 1120.0 -2430 Pass STSO-1118 03/19/07 Pb-214 4142.80 +/- 110.40 3330.0 1980.0 -4980 Pass STSO-1118 03/19/07 Sr-90 6163.30 +/- 791.60 7500.0 2610.0,- 12400 Pass STSO-1 118 03/19/07 Th-234 4329.40 +/- 569.10 3590.0 2190.0 -4560 Pass STSO-1118 t 03/19/07 Zn-65 0.00 +/- 0.00 0.0 0.0-0 Pass STVE-1 119 03/19/07 Co-60 2827.90 +/- 62.40 2600.0 1760.0 -3720 Pass STVE-1 119 03/19/07 Cs-1 34 654.80 +/- 48.40 579.0 308.0 -822 Pass STVE-1 119 03/19/07 Cs-1 37 3307.30 +/- 58.80 2920.0 2150.0 -4060 Pass STVE-1119 03/19/07 K-40 40814.20 +/- 618.80 37900.0 27200.0 - 53600 Pass T 0.0 Pass STVE-1119 03/19/07 Mn-54 < 27.6 STVE-1119 03/19/07 Sr-90 8999.70 +/- 580.90 8890.0 4900.0 - 11800 Pass STVE-1119 03/19/07 Zn-65 474.30 +/- 45.70 366.0 267.0 -500 Pass STW-1120 03/19/07 Co-60 541.40 +/- 9.00 536.0 467.0-631 Pass STW-1 120 03/19/07 Cs-1 34 1623.80 +/- 66.10 1750.0 1290.0 -2020 Pass STW-1 120 03/19/07 Cs-137 1839.10 +/- 17.90 1850.0 1570.0 -2220 Pass STW-1 120' 03/19/07 Mn-54 <8.1 0.0 Pass STW-1 120 03/19/07 Sr-90 949.40 +/- 16.70 989.0 630.0 -1320 Pass STW-1120 03/19/07 Zn-65 2009.00 +/- 36.40 1910.0 1600.0 -2410 Pass STW-1 121 04/09/07 Sr-89 30.7 +/- 4.3 35.4 26.7 -44.1 Pass STW-1 121 04/09/07 Sr-90 39.3 +/- 1.8 42.1 33.4 -50.8 Pass D-6

TABLE D-4 ERA(a) STATISTICAL

SUMMARY

PROFICIENCY TESTING PROGRAM ENVIRONMENTAL, INC., 2007 (Page 2 of 2)

Concentration (pCi/L)

Lab Code

  • Date Analysis Laboratory ERA Control Resultb Resultc Limits Acceptance STW-1 122 04/09/07 Ba-1 33 30.0 +/-2.4 29.3 20.6 - 38.0 Pass STW-1 122 04/09/07 Co-60 118.5 +/-3.9 119.0 109.0 - 129.0 Pass STW-1 122 04/09/07 Cs-1 34 52.6 +/-2.3 54.3 45.6 - 63.0 Pass STW-1 122 04/09/07 Cs-1 37 49.5 +/- 3.8 50.3 41.6-59.0 Pass STW-1 122 04/09/07 Zn-65 91.7 +/- 6.3 88.6 73.3 - 104.0 Pass STW-1 123 04/09/07 Gr. Alpha 33.8 +/- 3.5 56.5 32.0-81.0 Pass STW-1 123 04/09/07 Gr. Beta 24.2 +/- 2.3 25.3 16.6 -34.0 Pass STW-1 124 04/09/07 1-131 19.2 +/- 1.2 18.9 13.7 -24.1 Pass STW-1125 04/09/07 H-3 7540.0 +/- 255.0 8060.0 6660.0 - 9450.0 Pass STW-1 127 07/09/07 Sr-89 51.7 +/- 5.0 58.2 49.5 - 66.9 Pass STW-1 127 07/09/07 Sr-90 21.4 +/- 2.3 19.0 10.3 -27.7 Pass STW-1 128 07/09/07 Ba-133 19.4 +/- 2.2 19.4 10.7 -28.1 Pass STW-1128 07/09/07 Co-60 32.8 +/- 2.0 33.5 24.8 - 42.2 Pass STW-1 128 07/09/07 Cs-134 67.0 +/- 2.9 68.9 60.2 - 77.6 Pass STW-1 128 07/09/07 Cs-137 61.6 +/- 3.8 61.3 52.6 - 70.0 Pass STW-1 128 07/09/07 Zn-65 55.6 +/- 7.5 54.6 45.2 - 64.0 Pass STW-1129 07/09/07 Gr. Alpha 19.2 +/- 1.6 27.1 15.4 - 38.8 Pass STW-1129 07/09/07 Gr. Beta 9.1 +/- 0.9 11.5 2.8 - 20.2 Pass STW-1131 10/05/07 Sr-89 27.3 +/- 3.3 27.4 19.3 - 33.9 Pass STW-1131 10/05/07 Sr-90 17.7 +/- 1.2 18.2 12.9 -21.6 Pass STW-1132 10/05/07 Ba-133 12.2 +/- 3.3 12.6 8.6 - 15.5 Pass STW-1132 10/05/07 Co-60 23.8 +/- 1.4 23.2 19.9 - 28.3 Pass STW-1132 10/05/07 Cs-134 70.5 +/- 4.2 71.1 58.0 - 78.2 Pass STW-i 132 10/05/07 Cs-137 178.2 +/- 3.3 180.0 162.0 - 200.0 Pass STW-1132 10/05/07 Zn-65 263.9 +/- 6.9 251.0 226.0 - 294.0 Pass STW-1 133 10/05/07 Gr. Alpha 54.7 +/- 2.1 58.6 30.6 - 72.9 Pass STW-1133 10/05/07 Gr. Beta 11.9 +/- 0.9 9.7 4.3 - 18.2 Pass STW-1134 10/05/07 1-131 33.0 +/- 1.5 28.9 24.0 - 33.8 Pass STW-1135 10/05/07 H-3 9965.0 +/- 250.0 9700.0 8430.0 - 10700.0 Pass Laboratory codes as follows: STW (water), STAP (air filter), STSO (soil), STVE (vegetation).

a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing administered by Environmental Resources Associates, serving as a replacement for studies conducted previously by the Environmental Measurements Laboratory Quality Assessment Program (EML).

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

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

e A high bias (- 20%) was observed in gamma results for air filters. A composite filter geometry was used in the calculations vs. a single filter geometry. Result of recalculation. Cs-1 37, 305.8 +/- 6.0 pCi/filter.

f Included in the testing series as a "false positive". No activity expected.

D-7

TABLE D-5 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)a ENVIRONMENTAL, INC., 2007 (Page 1 of 1)

Concentration b Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STW-1110 01/01/07 Gr. Alpha 0.45 +/- 0.08 0.33 0.00 - 0.65 Pass STW-1110 01/01/07 Gr. Beta 0.90 +/- 0.14 0.85 0.43 - 1.28 Pass STW-1 111 01/01/07 Co-57 151.60 1 10.00 143.70 100.60 - 186.80 Pass STW-1111 01/01/07 Cs-1 34 79.20 +/- 8.00 83.50 58.50 - 108.60 Pass STW-1111 01/01/07 Cs-1 37 168.70 +/- 12.10 163.00 114.10 -211.90 Pass STW-1111 01/01/07 H-3 262.20 +/- 9.10 283.00 198.10 - 367.90 Pass STW-1111 01/01/07 Mn-54 130.60 +/- 11.50 123.80 86.70 - 160.90 Pass STW-1111 01/01/07 Sr-90 9.60 +/- 1.40 8.87 6.21 -11.53 Pass STW-1111 01/01/07 Zn-65 123.70 +/- 17.00 114.80 80.40 - 149.20 Pass STSO-1112 01/01/07 Co-57 501.20 +/- 2.90 471.20 329.80 -612.60 Pass STSO-1112 01/01/07 Co-60 285.90 +/- 2.10 274.70 192.30 - 357.10 Pass STSO-1112 01/01/07 Cs-1 34 325.90 +/- 7.40 327.40 229.20 - 425.60 Pass STSO-1112 01/01/07 Cs-1 37 855.70 +/- 4.60 799.70 559.80 - 1039.60 Pass STSO-1112 01/01/07 Mn-54 750.90 +/- 4.70 685.20 479.60 - 890.80 Pass STAP- 1113 01/01/07 Gr. Alpha 0.27 +/- 0.04 0.60 0.00-1.20 Pass STAP- 1113 01/01/07 Gr. Beta 0.57 +/- 0.05 0.44 0.22 - 0.66 Pass STAP-1 114 01/01/07 Co-57 3.51 +/- 0.07 2.89 2.02 - 3.75 Pass STAP-1 114 01/01/07 Co-60 2.98 +/- 0.10 2.91 2.03 - 3.78 Pass STAP-1 114 01/01/07 Cs-1 34 4.02 +/- 0.16 4.20 2.94 - 5.45 Pass STAP-1 114 01/01/07 Cs-1 37 2.75 +/- 0.12 2.57 1.80 -3.34 Pass STAP-1 114 01/01/07 Mn-54 3.94 +/- 0.12 3.52 2.46 -4.57 Pass STAP-1 114 01/01/07 Sr-90 0.58 +/- 0.18 0.61 0.43 - 0.79 Pass STAP-1 114 01/01/07 Zn-65 2.70 +/- 0.10 2.68 1.88 -3.49 Pass STVE-1115 01/01/07 Co-57 8.90 +/- 0.20 8.19 5.73 - 10.64 Pass STVE- 1115 01/01/07 Co-60 6.50 +/- 0.20 5.82 4.08 - 7.57 Pass STVE-1115 01/01/07 Cs-134 6.90 +/- 0.30 6.21 4.35 - 8.07 Pass STVE-1115 01/01/07 Cs-137 8.20 +/- 0.30 6.99 4.90 - 9.09 Pass STVE-1115 01/01/07 Mn-54 10.10 +/- 0.30 8.46 5.91 - 10.98 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the Department of Energy's Mixed Analyte Performance Evaluation Program, Idaho Operations office, Idaho Falls, Idaho b Results are reported in units of Bq/kg (soil), Bq/L (water) or Bq/total sample (filters, vegetation).

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

d MAPEP results are presented as the known values and expected laboratory precision (1 sigma, 1 determination) and control limits as defined by the MAPEP.

D-8

APPENDIX E EFFLUENT DATA

TABLE OF CONTENTS INTRO DUCTIO N.................................................................................................................... 1 SUM MARY ............................................................................................................................. 2 1.0. EFFLUENTS .................................................................................................. 3 1.1. G aseous Effl uents to the Atm osphere ............................................... 3 1.2. Liquids Released to Kankakee River .................................................. 3 2.0. SO LID RADIOACTIVE W ASTE ..................................................................... 3 3.0. DO SE TO MAN .............................................................................................. 4 3.1. G aseous Effl uent Pathw ays .............................................................. 4 3.1.1. Noble G ases ........................................................................ 4 3.1.1.1. Gam m a Dose Rates ............................................... 4 3.1.1.2. Beta Air and Skin Dose Rate ................................. 4 3.1.2. Radioactive Iodine ................................................................. 5 3.1.2.1. Dose to Thyroid ....................................................... 5 3.2. Liquid Effl uent Pathways ..................................................................... 5 3.3. Assessm ent of Dose to Mem ber of Public ......................................... 6 4.0. SITE METEO RO LO GY ................................................................................. 6

Table of Contents (cont.)

APPENDIX E-1 DATA TABLES AND FIGURES ......................................................... E-1.1 Station Releases Table 1.1-1 Gaseous Effluents Summation of all Releases ......................... E-1.2 Table 1.2-1 Liquid Effluents Summation of all Releases .............................. E-1.4 Table 3.1-1 Maximum Doses Resulting from Airborne Releases ................. E-1.6 Table 3.2-1 Maximum Doses Resulting from Liquid Effluents ...................... E-1.10 Table 3.3-1 10CFR20 Compliance Assessment .......................................... E-1.12 Table 3.4-1 Maximum Doses Resulting from Airborne Releases Based On Concurrent Meteorological Data ......................................... E-1.14 ii

INTRODUCTION Braidwood Station, a two-unit PWR station, is located in Will County, Illinois, fifteen (15) miles south-southwest of Joliet, Illinois. Each reactor is designed to have a capacity of 3586.6 thermal megawatts. Units No. 1 went critical on May 29, 1987, and unit No. 2 went critical on March 8, 1988. The station has been designed to keep releases to the environment at levels below those specified in the regulations.

Liquid effluents from Braidwood Station are released to the Kankakee River in controlled batches after radioassay of each batch. Gaseous effluents are released to the atmosphere and are calculated on the basis of analyses of grab samples of noble gases and tritium, as well as continuously collected composite samples of iodine and particulate activity sampled during the course of the year.

The results of effluent analyses are summarized on a monthly basis. Airborne concentrations of noble gases, 1-131, and particulate radioactivity in offsite areas are calculated using effluent and meteorological data.

Environmental monitoring is conducted by sampling at indicator and control (background) locations in the vicinity of Braidwood Station to measure changes in radiation or radioactivity levels that may be attributable to station operations. If significant changes attributable to Braidwood Station are measured, these changes are correlated with effluent releases. External gamma radiation exposure from noble gases and internal dose from 1-131 in milk are the critical pathways at this site; however, an environmental monitoring program is conducted which also includes other pathways.

1

SUMMARY

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

The Total Effective Dose Equivalent (TEDE) due to licensed activities at Braidwood Station calculated for the maximally exposed individual for the period is 2.09E+00 mrem. The annual limit on TEDE is 100 mrem.

The assessment of radiation doses to the public is performed in accordance with the ODCM. The results of these analyses confirm that the station is operating in compliance with 10CFR50 Appendix I, 10CFR20 and 40CFR190.

2

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

A total of 1.78E+01 curies of fission and activation gases were released with a maximum quarterly average release rate of 5.75E-01 pCi/sec at Unit 1 and 5.49E-01 pCi/sec at Unit 2.

A total of 4.68E-04 curies of 1-131 were released during the year with a maximum average quarterly release rate of 2.34E-05 pCi/sec for Unit 1 and 3.07E-05 pCi/sec for Unit 2.

A total of 3.26E-05 curies of beta-gamma emitters were released as airborne particulate matter with a maximum average release rate of 2.85E-06 pCi/sec at Unit 1 and 8.54E-07 pCi/sec at Unit 2.

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

A total of 5.34E+01 curies of tritium were released with a maximum average quarterly release rate of 1.78E+00 uCi/sec at Unit 1 and 8.60E-01 uCi/sec at Unit 2.

1.2 Liquids Released to Kankakee River A total of 2.05E+06 liters of radioactive liquid wastes (prior to dilution) containing 3.36E-03 curies (excluding tritium, noble gases and alpha) were discharged from the station. These wastes were released at a maximum quarterly diluted average concentration of 2.87E-10 pCi/ml. Alpha-emitting radionuclides were less than the LLD for the year. A total of 8.85E+02 curies of tritium was released from the station. Quarterly release activities are given in Table 1.2-1.

2.0 SOLID RADIOACTIVE WASTE Solid radioactive wastes were shipped by truck to the Envirocare of Utah disposal facility; the Barnwell, South Carolina disposal facility and various waste processors. For detail, refer the Braidwood Station 2007 Radioactive Effluent Release Report.

3

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

3.1.1 NohI*..Gases 3.1.1.1 Gamma Dose Rates Offsite Gamma air and total body dose rates are shown in Table 3.1-1 and were calculated based on measured effluents and average meteorological data. Based on measured effluents and average meteorological data, the maximum total body dose to an individual would be 1.15E-02 mrem for the year (Table 3.1-1) with an occupancy or shielding factor of 0.7 used. The maximum total body dose based on measured effluents and concurrent meteorological data would be 4.76E-05 mrem (Table 3.4-1). The maximum gamma air dose was 1.05E-04 mrad (Table 3.1-1) based on measured effluents and average meteorological data and 9.72E-05 mrad based on concurrent meteorological date (Table 3.4-1).

3.1.1.2 Beta Air and Skin Dose Rates The range of beta particles in air is relatively small (on the order of a few meters or less);

consequently, plumes of gaseous effluents may be considered "infinite" for purpose of calculating the dose from beta radiation incident on the skin.

However, the actual dose to sensitive skin tissues is difficult to calculate due to the effect of the beta particle energies, thickness of inert skin and clothing covering sensitive tissues. For purposes of this report the skin is taken to have a thickness of 7.0 mg/cm2 and an occupancy factor of 1.0 is used. The skin dose from beta and gamma radiation for the year was 5.79E-04 mrem based on concurrent meteorological data (Table 3.4-1).

4

The maximum offsite beta air dose for the year was 8.67E-04 mrad (Table 3.1-1) based on measured effluents and average meteorological data and 1.32E-03 mrad based on concurrent meteorological data (Table 3.4-1).

3.1.2 Radioactive Iodine The human thyroid exhibits a significant capacity to concentrate ingested or inhaled iodine and the radionuclide 1-131. Minimal levels of radioiodine released during routine operation of the station may be made available to man, thus resulting in a dose to the thyroid. The principal pathway of interest for this radionuclide is ingestion of radioiodine in milk. Calculations performed in 2007 and previous years indicate that contributions to doses from inhalation of 1-131 and 1-133, and ingestion of 1-133 in milk are negligible.

3.1.2.1 Dose to Thyroid The hypothetical thyroid dose to the maximum exposed individual living near the station via ingestion of milk was calculated. The radionuclide considered was 1-131 and the source of milk was taken to be the nearest dairy farm with the cows pastured from May through October. The maximum thyroid dose did not exceed 1.04E-01 mrem during the year (Table 3.1-1 [infant]).

3.2 Liquid Effluent Pathways The three principal pathways through the aquatic environment for potential doses to man from liquid waste are ingestion of potable water, eating aquatic foods, and exposure while on the shoreline.

Not all of these pathways are significant or applicable at a given time or station but a reasonable approximation of the dose can be made by adjusting the dose formula for season of the year or type and degree of use of the aquatic environment. NRC developed equations* were used to calculate the doses to the whole body, lower GI tracts, thyroid, bone and skin; specific parameters for use in the equations are given in the Exelon Offsite Dose Calculation Manual. The maximum whole body dose for the year was 2.90E-01 mrem and no organ dose exceeded 2.90E-01 mrem (Table 3.2-1

[child]).

5

3.3 Assessment of Dose to Member of Public During the period January to December, 2007, Braidwood Station did not exceed the following limits as shown in Table 3.1-1 and Table 3.2-1 (based on annual average meteorological data), Figure 3.1-1 (based on concurrent meteorological data), and Table 3.3-1:

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

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

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

The 10CFR20 limit on Total Effective Dose Equivalent to individual members of the public (100 mrem) during any calendar year.

4.0 SITE METEOROLOGY A summary of the site meteorological measurements taken during each calendar quarter of the year is given in Appendix E. The data are presented as cumulative joint frequency distributions of the wind direction for the 203' level and wind speed class by atmospheric stability class determined from the temperature difference between the 199' and 30' levels. Data recovery for these measurements was 99.7% during 2007.

APPENDIX E - 1 DATA TABLES AND FIGURES E- 1.1

Table 1.1-1 GASEOUS EFFLUENTS SUMMATION OF ALL RELEASES BRAIDWOOD NUCLEAR POWER STATION ANNUAL EFFLUENT REPORT FOR 2007 GAS RELEASES UNIT 1 (Docket Number 50-456)

SUMMATION OF ALL RELEASES Units 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr EstTrrort A. Fission and Activation Gas Releases

1. Total Release Activity Ci 2.23E+00 1.13E+00 1.29E+00 4.57E+00 7.59
2. Average Release Rate uCi/sec 2.87E-01 1.44E-01 1.62E-01 5.75E-01
3. Percent of ODCM Limit - gamma  % 3.07E-04 6.59E-05 1.34E-04 5.95E-04
4. Percent of ODCM Limit - beta  % 9.62E-04 6.84E-04 6.75E-07 2.13E-03 B. Iodine Releases
1. Total 1-131 Activity Ci 7.94E-06 2.08E-05 8.89E-06 1.86E-04 33.20
2. Average Release Rate uCi/sec 1.02E-06 2.65E-06 1.12E-06 2.34E-05
3. Percent of ODCM Limit - gamma  % 3.44E-02 6.14E-02 2.87E-02 4.07E-01 C. Particulate (> 8 day half-life) Releases
1. Gross Activity Ci 2.22E-05 <LLD 2.54E-06 <LLD 19.80
2. Average Release Rate uCi/sec 2.85E-06 <LLD 3.20E-07 <LLD
3. Percent of ODCM Limit  % 3.44E-02 N/A 2.87E-02 N/A
4. Gross Alpha Activity Ci <LLD <LLD <LLD <LLD D. Tritium Releases
1. Total Release Activity Ci 1.01E+01 1.40E+01 5.84E+00 6.45E+00 8.07
2. Average Release Rate uCi/sec 1.30E+00 1.78E+00 7.35E-01 8.11E-01
3. Percent of ODCM Limit 3.44E-02 16.14E-02 2.87E-02 4.07E-01 Note: LLD Values are included in Appendix A of this report.

E- 1.2

Table 1.1-1 (continued)

GASEOUS EFFLUENTS SUMMATION OF ALL RELEASES BRAIDWOOD NUCLEAR POWER STATION ANNUAL EFFLUENT REPORT FOR 2007 GAS RELEASES UNIT 2 (Docket Number 50-457)

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

A. Fission and Activation Gas Releases

1. Total Activity Released Ci 2.34E+00 8.50E-01 1.06E+00 4.36E+00 7.59
2. Average Release Rate uCi/sec 3.01E-01 1.08E-01 1.33E-01 5.49E-01
3. Percent of ODCM Limit- gamma  % 3.25E-04 2.18E-05 9.78E-05 5.61E-04
4. Percent of ODCM Limit - beta  % 1.01E-03 5.77E-04 5.86E-04 2.05E-03 B. Iodine Releases
1. Total 1-131 Activity Ci <LLD <LLD <LLD 2.44E-04 33.20
2. Average Release Rate uCi/sec 0.00E+00 0.00E+00 0.00E+00 3.07E-05
3. Percent of ODCM Limit  % N/A N/A N/A 9.06E-01 C. Particulate (> 8 day half-life) Releases
1. Gross Activity Ci <LLD 1.10E-06 <LLD 6.79E-06 19.80
2. Average Release Rate uCi/sec 0.00E+00 1.41E-07 0.OOE+00 8.54E-07
3. Percent of OCDM Limit  % N/A 1.92E-02 N/A 9.06E-01
4. Gross Alpha Activity Ci <LLD <LLD <LLD <LLD D. Tritium Releases
1. Total Release Activity Ci 5.41E-01 6.76E+00 4.05E+00 5.66E+00 8.07
2. Average Release Rate
3. Percent of ODCM Limit I...

uCi/sec 6.96E-02 8.60E-01 5.10E-01 7.12E-01 1.54E-03 1.92E-02 1.15E-02 9.06E-01 Note: LLD Values are included in Appendix A of this report.

E- 1.3

Table 1.2-1 LIQUID EFFLUENTS SUMMATION OF ALL RELEASES BRAIDWOOD NUCLEAR POWER STATION ANNUAL EFFLUENT REPORT FOR 2007 LIQUID RELEASES UNIT 1 (Docket Number 50-456)

SUMMATION OF ALL RELEASES SInits 1st Qr Unrd 2nd Qtr 3rdQtrI4thoQrlEst. Total Qt 4t Qtrr ErrorI A. Fission and Activation Products

1. Total Activity Released Ci 3.72E-05 2.14E-04 2.68E-05 1.40E-03 2.64
2. Average Concentration Released uCi/mI 1.16E-11 7.38E-11 9.08E-12 2.87E-10
3. Percent of limit  %*....

B. Tritium

1. Total Activity Released Ci 7.36E+01 1.07E+02 1.12E+02 1.50E+02 5.85
2. Average Concentration Released uCi/mI 2.29E-05 3.69E-05 3.80E-05 3.07E-05
3. % of Limit (1 E-2 uCi/ml)  % 2.29E-01 3.69E-01 3.80E-01 3.07E-01 C. Dissolved Noble Gases
1. Total Activity Released Ci 0.00E+00 0.00E+00 1.54E-06 0.00E+00 2.64
2. Average Concentration Released uCi/mI 0.00E+00 0.OOE+00 5.22E-13 0.00E+00
3. % of Limit (2E-4 uCi/ml)  % 0.OOE+00 0.00E+00 2.61E-07 0.OOE+00 D. Gross Alpha
1. Total Activity Released Ci 0.00E+00 0.OOE+00 0.00E+00 0.00E+00 14.70I
2. Average Concentration Released uCi/mI 0.00E+00 0.OOE+00 0.00E+00 O.00E+00 E. Volume of Releases I1.Volume of Liquid Waste to Discharge I liters I2.46E+05 I2.85E+05 I 2.34E+05 12.61 E+05
2. Volume of Dilution Water liters 3.21 E+09 2.90E+09 2.95E+09 4.88E+09 Note: LLD Values are included in Appendix A of this report.
  • This limit is equal to 10 times the concentration values in Appendix B, Table 2, Column 2 to 10CFR20.1001-20.2402.

E- 1.4

Table 1.2-1 (continued)

LIQUID EFFLUENTS SUMMATION OF ALL RELEASES BRAIDWOOD NUCLEAR POWER STATION ANNUAL EFFLUENT REPORT FOR 2007 LIQUID RELEASES UNIT 2 (Docket Number 50-457)

SUMMATION OF ALL RELEASES Units 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr EstTErrort A. Fission and Activation Products

1. Total Activity Released Ci 3.72E-05 2.14E-04 2.68E-05 1.40E-03 2.64
2. Average Concentration Released uCi/ml 1.16E-11 7.38E-11 9.08E-12 2.87E-10
3. Percent of Limit  % ....

B. Tritium

1. Total Activity Released Ci 7.36E+01 1.07E+02 1.12E+02 1.50E+02 5.85
2. Average Concentration Released uCi/ml 2.29E-05 3.69E-05 3.80E-05 3.07E-05
3. % of Limit (1E-3 uCi/ml)  % j2.29E-01 3.69E-01 3.80E-01 3.07E-01 C. Dissolved Noble Gases
1. Total Activity Released Ci 0.OOE+00 0.OOE+00 1.54E-06 0.00E+00 2.64
2. Average Concentration Released uCi/ml 0.00E+00 0.00E+00 5.22E-13 0.00E+00
3. % of Limit (2E-4 uCi/ml)  % J0.00E+00 0.00E+00 2.61E-07 0.OOE+00 D. Gross Alpha
1. Total Activity Released Ci *

.oE+00 o

.ooE+00 o.ooE+00 oo .OOE+o 14.70

12. Average Concentration Released uCi/ml O.OOE+00 0.OOE+0O00.OOE+00 I 0.OOE÷00 I E. Volume of Releases
1. Volume of Liquid Waste to Discharge liters I2.46E+05 2.85E+05 2.34E+0,5 12.61 E+05I
2. Volume of Dilution Water liters 3.21 E+09 2.90E+09 2.95E+09 4.88E+09 Note: LLD Values are included in Appendix A of this report.
  • This limit is equal to 10 times the concentration values in Appendix B, Table 2, Column 2 to 10CFR20.1001-2402.

E- 1.5

Table 3.1-1 MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES GASEOUS RELEASE AND DOSE

SUMMARY

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

Release ID.............. 1 All Gas Release Types Period Start Date .... 01/01/2007 00:00 Period End Date ......  :.01/01/2008 00:00 Period Duration (min): 5.256E+05 Coefficient Type .....  :.Historical Unit .................... 1 Receptor ............... 5 Composite Crit. Receptor - IP Distance (meters) ....  :.0.0 Compass Point ........  :.0.0

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

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

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End INFANT THYROID Qrtr->End INFANT THYROID 3. 99E-0 2 31-day 2.25E-01 1.77E+01 3.OOE-01 1.33E+01 Year->End INFANT THYROID 3. 99E-0 2 Quarter 5.63E+00 7.09E-01 7.50E+00 5.32E-01

3. 99E-0 2 Annual 1.13E+01 3.55E-01 1.50E+01 2.66E-01 Critical Pathway ........  :.3 Grs/Goat/Milk (GMILK)

Major Contributors ......  :.0.0  % or greater to total Nuclide Percentage H-3 1.51E+01 1-131 8.27E+01 1-132 2.05E-03 1-133 2.18E+00

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

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

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End CHILD TBODY 7.78E-0 3 31-day 1.50E-01 5. 19E+00 2.OOE-01 3.89E+00 Qrtr->End CHILD TBODY 7.78E-0 3 Quarter 5.25E+00 1. 48E-01 7.50E+00 1.04E-01 Year->End CHILD TBODY 7.78E-0 3 Annual 1.05E+01 7.41E-02 1.50E+01 5.19E-02 Critical Pathway ........  :.2 Vegetation (VEG)

Major Contributors ......  :.0.0  % or greater to total Nuclide Percentage H-3 9.97E+01 1-131 3.20E-01 1-132 1.09E-03 1-133 1.17E-02 Date/Time: 04/26/2008 06:45 retdasID: Retdas E- 1.6

Table 3.1-1 (continued)

MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES GASEOUS RELEASE AND DOSE

SUMMARY

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

Release ID ............. 1 All Gas Release Types Period Start Date .... 01/01/2007 00:00 Period End Date ...... .. 01/01/2008 00:00 Period Duration (min): 5.256E+05 Coefficient Type ..... :.Historical Unit .................... 1 Receptor ............... 4 Composite Crit. Receptor - NG Distance (meters) ....  :.0.0 Compass Point ........  :.0.0

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

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

Period Dose Type (mrad) Period Limit of Limit Limit of Limit Strt->End Gamma 5.51E-05 Qrtr->End Gamma 5.51E-05 31-day 1.50E-01 3. 68E-02 2.OOE-01 2.76E-02 Year->End Gamma 5.51E-05 Quarter 3. 75E+00 1. 47E-03 5.OOE+00 1.10E-03 Annual 7.50E+00 7. 35E-04 1.OOE+01 5.51E-04 Major Contributors ......  : 0.0  % or greater to total Nuclide Percentage AR-41 2.65E-01 KR-85M 2.13E-02 KR-85 1.82E+00 KR-87 6.61E-02 XE-133M 5.59E-01 KR-88 1.39E-04 XE-131M 7.25E-01 XE-135 2.89E+00 XE-133 9.33E+01 XE-138 3.99E-01

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

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

Period Dose Type (mrad) Period Limit of Limit Limit of Limit Strt->End Beta 4.45E-04 Qrtr->End Beta 4.45E-04 31-day 3.OOE-01 1.48E-01 4.OOE-01 1.lE-01 Year->End Beta 4.45E-04 Quarter 7.50E+00 5.94E-03 1.OOE+01 4.45E-03 Annual 1.50E+01 2.97E-03 2.OOE+01 2.23E-03 Major Contributors ......  :.0.0  % or greater to total Nuclide Percentage AR-41 1.88E-02 KR-85M 6.88E-03 KR-85 4.16E+01 KR-87 2.23E-02 XE-133M 5.lIE-01 KR-88 5.42E-06 XE-131M 1.04E+00 XE-135 7.47E-01 XE-133 5.60E+01 Date/Time: 04/26/2008 06:45 retdasID: Retdas E- 1.7

Table 3.1-1 (continued)

MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES GASEOUS RELEASE AND DOSE

SUMMARY

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

Release ID ............. 1 All Gas Release Types Period Start Date .... 01/01/2007 00:00 Period End Date ......  :.01/01/2008 00:00 Period Duration (min): 5.256E+05 Coefficient Type ..... :.Historical Unit .................... 2 Receptor .............  : 5 Composite Crit. Receptor - IP Distance (meters) ....  :.0.0 Compass Point ........  :.0.0 MAXIMUM PERIOD DOSE TO LIMIT (. Any Organ)

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

Peri iod Group Organ (mrem) Period Limit of Limit Limit of Limit

->End INFANT THYROID 6.98E-02 Strt *->End INFANT THYROID 6.98E-02 31-day 2.25E-01 3.10E+01 3.OOE-01 2.33E+01 Qrtrr->End INFANT THYROID 6.98E-02 Quarter 5.63E+00 1.24E+00 7.50E+00 9.31E-01 Year Annual 1.13E+01 6.21E-01 1.50E+01 4.66E-01 Critical Pathway ........  :.3 Grs/Goat/Milk (GMILK)

Major Contributors ......  :.0.0  % or greater to total Nuclide Percentage H-3 4.04E+00 1-131 9.56E+01 1-132 1.69E-03 1-133 2.63E-01 ND-147 4.01E-05

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

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

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End CHILD TBODY 3. 68E-03 31-day 1.50E-01 2.45E+00 2.OOE-01 1.84E+00 Qrtr->End CHILD TBODY 3. 68E-03 Quarter 5.25E+00 7.OOE-02 7.50E+00 4. 90E-02 Year->End CHILD TBODY 3. 68E-03 Annual 1.05E+01 3.50E-02 1.50E+01 2 . 45E-02 Critical Pathway ......... 2 Vegetation (VEG)

Major Contributors ....... 0.0  % or greater to total Nuclide Percentage H-3 9.87E+01 1-131 1.37E+00 1-132 3.35E-03 1-133 5.22E-03 ND-147 7.67E-04 Date/Time: 04/26/2008 06:47 retdasID: Retdas E- 1.8

Table 3.1-1 (continued)

MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES GASEOUS RELEASE AND DOSE

SUMMARY

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

Release ID ........... 1 All Gas Release Types Period Start Date .... 01/01/2007 00:00 Period End Date ......  :.01/01/2008 00:00 Period Duration (min)  : 5.256E+05 Coefficient Type .....  :.Historical Unit .................... 2 Receptor ............... 4 Composite Crit. Receptor - NG Distance (meters) ....  :.0.0 Compass Point ........ 0.0

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

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

Period Dose Type (mrad) Period Limit of Limit Limit of Limit Strt->End Gamma 5.03E-05 Qrtr->End Gamma 5.03E-05 31-day 1.50E-01 3. 35E-02 2.00E-01 2.52E-02 Year->End Gamma 5.03E-05 Quarter 3. 75E+00 1.34E-03 5.OOE+00 1.01E-03 Annual 7.50E+00 6.71E-04 1.00E+01 5.03E-04 Major Contributors ......  :.0.0  % or greater to total Nuclide Percentage AR-41 2.90E-01 KR-85M 2.33E-02 KR-85 1.99E+00 KR-87 7.24E-02 XE-133M 6.13E-01 KR-88 1.53E-04 XE-131M 7.94E-01 XE-135 3.16E+00 XE-133 9.26E+01 XE-138 4.37E-01

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

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

Period Dose Type (mrad) Period Limit of Limit Limit of Limit Strt->End Beta 4. 22E-04 31-day 3.00E-01 1.41E-01 4. OOE-01 1.05E-01 Qrtr->End Beta 4.22E-04 Quarter 7.50E+00 5.62E-03 1. 00E+01 4.22E-03 Year->End Beta 4.22E-04 Annual 1.50E+01 2.81E-03 2. 00E+01 2. 11E-03 Major Contributors ......  :.0.0  % or greater to total Nuclide Percentage AR-41 1.99E-02 KR-85M 7.26E-03 KR-85 4.39E+01 KR-87 2.35E-02 XE-133M 5.39E-01 KR-88 5.72E-06 XE-131M 1.10E+00 XE-135 7.88E-01 XE-133 5.36E+01 Date/Time: 04/26/2008 06:47 retdasID: Retdas E- 1.9

Table 3.2-1 MAXIMUM DOSES RESULTING FROM LIQUID EFFLUENTS LIQUID RELEASE AND DOSE

SUMMARY

REPORT

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

Release ID .............. 1 All Liquid Release Types Period Start Date ..... :.01/01/2007 00:00 Period End Date .......  :.01/01/2008 00:00 Period Duration (mins) : 5.256E+05 Unit ..................... 1 Receptor ................ 0 Liquid Receptor

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

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

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End CHILD LIVER 1.45E-01 31-day 1.50E-01 9.68E+01 2.00E-01 7.26E+01 Qrtr->End CHILD LIVER 1.45E-01 Quarter 3.75E+00 3.87E+00 5.00E+00 2.90E+00 Year->End CHILD LIVER 1.45E-01 Annual 7.50E+00 1.94E+00 1.00E+01 1.45E+00 Critical Pathway ........  :.0 Potable Water (PWtr)

Major Contributors ......  :.0.0  % or greater to total Nuclide Percentage H-3 9. 92E+01 CR-51 0. OOE+00 MN-54 2.17E-03 FE-59 1. 23E-02 CO-58 6. 96E-04 CO-60 1 . 50E-03 ZR-95 1 . 39E-07 NB-95 2 .20E-04 TC-99M 6. 45E-10 TE-132 1.30E-04 1-131 3. 74E-05 CS-134 3. 55E-01 CS-136 3. 66E-03 CS-137 1. 93E-01

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

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

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End CHILD TBODY

1. 45E-01 31-day 4.50E-02 3.21E+02 6.OOE-02 2.41E+02 Qrtr->End CHILD TBODY
1. 45E-01 Quarter 1.13E+00 1.28E+01 1.50E+00 9.63E+00 Year->End CHILD TBODY 1.45E-01 Annual 2.25E+00 6.42E+00 3.OOE+00 4.82E+00 Critical Pathway ........  :.0 Potable Water (PWtr)

Major Contributors ...... .. 0.0  % or greater to total Nuclide Percentage H-3 9.96E+01 CR-51 1.18E-05 MN-54 5.80E-04 FE-59 6.17E-03 Date/Time: 04/26/2008 06:48 retdasID: Retdas E- 1.10

Table 3.2-1 (continued)

MAXIMUM DOSES RESULTING FROM LIQUID EFFLUENTS LIQUID RELEASE AND DOSE

SUMMARY

REPORT

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

Release ID ............ 1 All Liquid Release Types Period Start Date ..... 01/01/2007 00:00 Period End Date ........ 01/01/2008 00:00 Period Duration (mins): 5.256E+05 Unit ................... 2 Receptor .............. 0 Liquid Receptor

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

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

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End CHILD LIVER 1.45--01 Qrtr->End CHILD LIVER 1.45E-01 31-day 1.50E-01 9. 68E+01 2.00E-01 7.26E+01 Quarter 3. 75E+00 3. 87E+00 5.CCE+00 2.90E+00 Year->End CHILD LIVER 1.45E-01 Annual 7. 50E+00 1. 94E+00 1.CCE+01 1.45E+00 Critical Pathway ......... 0 Potable Water (PWtr)

Major Contributors ....... 0.0  % or greater to total Nuclide Percentage H-3 9.92E+01 CR-51 0.00E+00 MN-54 2.17E-03 FE-59 1.23E-02 CO-58 6.96E-04 CO-60 1.50E-03 ZR-95 1.39E-07 NB-95 2.20E-04 TC-99M 6.45E-10 TE-132 1.30E-04 1-131 3.74E-05 CS-134 3.55E-01 CS-136 3.66E-03 CS-137 1.93E-01

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

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

Period Group Organ (mrem) Period Limit of Limit Limit of Limit Strt->End CHILD TBODY 1. 45E-01 31-day 4.50E-0 2 3.21E+02 6.COE-02 2.41E+02 Qrtr->End CHILD TBODY 1.45E-01 Quarter 1. 13E+C 0 1.28E+01 1.50E+00 9. 63E+00 Year->End CHILD TBODY 1.45E-01 Annual 2.25E+C0 6.42E+00 3.00E+00 4. 82E+00 Critical Pathway ......... 0 Potable Water (PWtr)

Major Contributors ....... 0.0  % or greater to total Nuclide Percentage H-3 9.96E+01 CR-51 1.18E-05 MN-54 5.80E-04 FE-59 6.17E-03 Date/Time: 04/26/2008 06:49 retdasID: Retdas E- 1.11

Table 3.3-1 10CFR20 COMPLIANCE ASSESSMENT Braidwood Nuclear Station Unit 1 10 CFR 20 Compliance Assessment Period of Assessment: 1/1/07 through 12/31/07 Calculated 4/24/08 10 CFR 20.1301(A)(1) COMPLIANCE Total Effective Dose Equivalent (TEDE) mrem/year 8.43E-01 10 CFR 20.1301 (a)(1) limit mrem/year 100.00

% of limit 0.84 COMPLIANCE

SUMMARY

1st Qtr Qtr 3 rd Qtr 4 th Qtr Total 2 nd TEDE (mrem) 7.43E-02 2.90E-01 5.05E-02 4.28E-02 8.43E-01 E- 1.12

Table 3.3-1 (continued)

IOCFR20 COMPLIANCE ASSESSMENT Braidwood Nuclear Station Unit 2 10 CFR 20 Compliance Assessment Period of Assessment: 1/1/07 through 12/31/07 Calculated 4/24/08 10 CFR 20.1301(A)(1) COMPLIANCE Total Effective Dose Equivalent (TEDE) mrem/year 1.25E+00 10 CFR 20.1301(a)(1) limit mrem/year 100.00

% of limit 1.25 COMPLIANCE

SUMMARY

1st Qtr 2 nd Qtr 3 rd Qtr 4 th Qtr Total TEDE (mrem) 4.15E-02 2.48E-01 3.38E-02 9.27E-012 1.25E+00 E- 1.13

Table 3.4-1 Braidwood Station - Unit 1 MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES 2007 TYPE OF DOSE FIRST QUARTER SECOND QUARTER THIRD QUARTER FOURTH QUARTER ANNUAL GAMMA AIR (mrad) 1.640E-05( W )) 5.720E-06( W )) 1.11OE-05( W )) 3.750E-05 (NNW) 5.532E-05(NNW)

BETA AIR (mrad) 1.670E-04( W 1.670E-04( W 2.100E-04( W 4.030E-04 (NNW) 7.350E-04(WNW)

) ) ) 2.694E-05(NNW)

WHOLE BODY (mrem) 7.890E-06( W 2.590E-06( W 5.270E-06( W 1.850E-05(NNW)

) ) ) 3.187E-04( W SKIN (mrem) 6.970E-05( W 8.520E-05( W 9.510E-05( W 1.780E-04 (NNW)

) ) )

ORGAN (mrem) 4.120E-04( W 8.290E-04( W 4.310E-04( W 3.030E-04 (NNW) 1.788E-03( W CRITICAL PERSON Teenager Teenager Teenager Teenager Teenager CRITICAL ORGAN Thyroid Thyroid Thyroid Thyroid Thyroid COMPLIANCE STATUS 10 CFR 50 APP. I 10 CFR 50 APP.I TYPE OF DOSE QUARTERLY OBJECTIVE  % OF APP. I YEARLY OBJECTIVE  % OF APP. I GAMMA AIR (mrad) 5.0 0.00 10.0 0.00 BETA AIR (mrad) 10.0 0.00 20.0 0.00 WHOLE BODY (mrem) 2.5 0.00 5.0 0.00 SKIN (mrem) 7.5 0.00 15.0 0.00 ORGAN (mrem) 7.5 0.01 15.0 0.01 CRITICAL PERSON Teenager Teenager CRITICAL ORGAN Thyroid Thyroid Calculation used release data from the following:

Unit 1 - Vent Date of calculation: 4/21/2008 E- 1.14

Table 3.4-1 (continued)

Braidwood Station - Unit 2 MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES 2007 TYPE OF DOSE FIRST QUARTER SECOND QUARTER THIRD QUARTER FOURTH QUARTER ANNUAL GAMMA AIR (mrad) 4.250E-07( W 1.960E-06( W )) 8.100E-06( W 3.550E-05(NNW) 4.184E-05(NNW)

BETA AIR (mrad) 4.040E-05( W 1.410E-04( W ) 1.820E-04( W 3.880E-04(NNW) 5.895E-04 (WNW)

WHOLE BODY (mrem) 3.510E-08( W 6.740E-07( W ) 3.780E-06( W 1.790E-05(NNW) 2. 067E-05 (NNW)

SKIN (mrem) 2.190E-05( W 7.530E-05( W ) 8.590E-05( W 1.720E-04(NNW) 2.598E-04 (WNW)

ORGAN (mrem) 2.200E-05( W 3.980E-04( W 2.970E-04( W 2.820E-04(NNW) 8.240E-04( W )

CRITICAL PERSON Teenager Teenager Teenager Teenager Teenager CRITICAL ORGAN Liver Liver Liver Thyroid Thyroid COMPLIANCE STATUS 10 CFR 50 APP. I 10 CFR 50 APP.I TYPE OF DOSE QUARTERLY OBJECTIVE  % OF APP. I YEARLY OBJECTIVE  % OF APP. I GAMMA AIR (mrad) 5.0 0.00 10.0 0.00 BETA AIR (mrad) 10.0 0.00 20.0 0.00 WHOLE BODY (mrem) 2.5 0.00 5.0 0.00 SKIN (mrem) 7.5 0.00 15.0 0.00 ORGAN (mrem) 7.5 0.01 15.0 0.01 CRITICAL PERSON Teenager Teenager CRITICAL ORGAN Liver Thyroid Calculation used release data from the following:

Unit. 2 - Vent Date of calculation: 4/21/2008 E- 1.15

APPENDIX F METEOROLOGICAL

Braidwood Generating Station Period of Record: January - March 2007 Stability Class - Extremely Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 2 0 0 0 N 0 0 2 0 0 0 0 NNE 0 0 0 4 0 0 0 NE 0 0 4 6 0 0 0 ENE 0 0 6 3 0 0 0 E 0 3 6 2 0 0 0 ESE 0 0 2 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 0 SSW 0 0 2 3 0 0 5 SW 0 1 1 2 0 0 4 WSW 0 0 0 4 0 0 4 W 0 0 2 4 3 0 9 WNW 0 3 12 4 0 0 19 NW 0 2 15 0 0 0 17 NNW 0 0 9 0 0 0 9 Variable 0 0 0 0 0 0 0 Total 0 9 58 17 3 0 87 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-i

Braidwood Generating Station Period of Record: January - March 2007 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 1 0 0 0 N 0 0 1 0 0 0 0 NNE 0 0 0 1 0 0 0 1 NE 0 0 0 0 0 0 1 ENE 0 1 0 0 0 0 E 0 2 2 3 0 0 0 ESE 0 1 4 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 0 SSW 0 1 2 2 0 0 5 SW 0 0 5 4 0 0 9 WSW 0 3 2 3 0 0 8 W 0 0 1 2 1 0 4 WNW 0 1 8 5 0 0 14 NW 0 2 4 3 0 0 9 NNW 0 1 2 1 0 0 4 Variable 0 0 0 0 0 0 0 Total 0 12 29 20 1 0 62 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-2

Braidwood Generating Station Period of Record: January - Marci 1 2007 Stability Class - Slightly Unstable - 19S9Ft- 30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 NNE 0 0 1 NE 0 0 2 ENE 0 0 1 E 0 0 4 ESE 0 0 4 SE 0 0 4 SSE 0 0 6 S 0 0 2 SSW 0 0 5 SW 0 0 10 WSW 0 0 8 W 0 0 19 WNW 0 0 13 NW 0 0 6 NNW 0 0 6 Variable 0 0 0 Total 0 26 47 18 0 92 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-3

Braidwood Generating Station Period of Record: January - March 2007 Stability Class - Neutral - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 12 3 4 0 0 20 NNE 4 21 17 9 0 0 51 NE 6 33 35 4 0 0 78 ENE 5 22 8 0 0 0 35 E 5 27 41 0 0 0 73 ESE 1 26 26 2 0 0 55 SE 0 12 7 0 0 0 19 SSE 0 16 16 4 0 0 36 S 0 5 33 34 4 0 76 SSW 0 9 37 52 17 0 115 SW 1 8 72 32 6 0 119 WSW 1 21 58 24 10 0 114 W 0 47 53 28 1 0 129 WNW 1 32 46 17 0 0 96 NW 3 26 30 2 0 0 61 NNW 2 14 17 0 0 0 33 Variable 0 0 0 0 0 0 0 Total 30 331 499 212 38 0 1110 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 2 Hours of missing stability measurements in all stability classes: 3 F-4

Braidwood Generating Station Period of Record: January - March 2007 Stability Class - Slightly Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 10 0 0 11 NNE 1 7 3 0 NE 1 10 1 9 21 ENE 8 8 0 0 16 E 13 14 12 1 40 ESE 7 22 11 1 41 SE 4 16 9 0 29 SSE 2 10 9 4 25 S 1 10 11 15 37 SSW 1 12 27 19 60 SW 2 15 25 6 48 WSW 7 36 9 1 53 W 14 47 22 4 87 WNW 11 62 23 1 97 NW 10 32 5 0 47 NNW 6 13 9 0 28 Variable 0 0 0 0 0 Total 89 324 176 61 1 0 651 Hours of calm in this stability class: 7 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-5

Braidwood Generating Station Period of Record: January - March 2007 Stability Class - Moderately Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 0 0 1 NNE 1 0 0 0 1 NE 0 0 0 0 0 ENE 0 0 0 0 0 E 0 0 0 0 0 ESE 1 0 0 0 1 SE 0 2 0 0 2 SSE 0 4 0 0 4 S 0 0 0 0 0 SSW 0 2 11 0 13 SW 1 2 0 0 3 WSW 6 23 0 0 29 W 13 21 0 0 34 WNW 17 10 0 0 0 0 27 NW 4 1 0 0 0 0 5 1 1 0 0 0 0 2 NNW Variable 0 0 0 0 0 0 0 Total 44 67 11 0 0 0 122 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-6

Braidwood Generating Station Period of Record: January - March 2007 Stability Class - Extremely Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

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

Braidwood Generating Station Period of Record: January - March 2007 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 0 0 0 1 NNE 0 0 0 1 0 0 1 NE 0 0 0 3 0 0 3 ENE 0 0 0 5 0 0 5 E 0 0 3 2 0 0 5 ESE 0 0 1 4 0 0 5 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 0 0 0 0 0 SSW 0 0 3 1 2 0 6 SW 0 1 0 0 0 0 1 WSW 0 0 0 2 2 0 4 W 0 0 1 3 2 3 9 WNW 0 0 7 5 5 1 18 NW 0 0 11 7 2 0 20 NNW 0 0 5 4 0 0 9 Variable 0 0 0 0 0 0 0 Total 0 1 32 37 13 4 87 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability cl asses: 3 F-8

Braidwood Generating Station Period of Record: January - March 2007 Stability Class - Moderately Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 0 1 0 0 1 N 0 0 0 0 0 0 NNE 0 0 0 0 1 0 0 1 NE 0 0 1 0 0 0 1 ENE 0 0 1 0 0 0 E 0 1 2 1 3 0 0 ESE 0 0 4 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 0 2 3 2 0 SSW 0 0 7 1 3 2 0 SW 0 0 6 WSW 0 2 1 1 0 0 4 W 0 0 0 3 3 1 7 WNW 0 0 2 4 9 0 15 NW 0 0 3 2 4 0 9 NNW 0 1 0 3 1 0 5 Variable 0 0 0 0 0 0 0 Total 0 4 12 24 21 1 62 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-9

Braidwood Generating Station Period of Record: January - March 2007 Stability Class - Slightly Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 0 0 0 0 N 1 1 0 0 0 0 NNE 0 0 NE 1 0 1 1 0 3 ENE 1 0 0 0 0 1 E 0 2 2 0 0 4 ESE 0 4 2 0 0 6 SE 0 2 0 0 0 2 SSE .0 5 1 0 0 6 S 0 2 0 0 0 2 SSW 0 1 6 1 0 8 SW 1 1 4 0 0 6 WSW 2 0 3 1 0 6 W 1 6 2 5 0 14 WNW 1 8 1 7 1 18 NW 1 3 2 2 0 8 NNW 0 2 4 1 0 7 Variable 0 0 0 0 0 0 Total 0 9 36 28 18 1 92 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F- 10

Braidwood Generating Station Period of Record: January - March 2007 Stability Class - Neutral - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 8 3 3 0 18 NNE 3 22 6 6 3 40 NE 9 24 34 12 2 82 ENE 10 21 9 0 0 41 E 4 15 28 18 9 74 ESE 2 21 22 7 2 54 SE 5 11 4 5 0 25 SSE 4 13 9 8 1 35 S 3 7 28 27 21 86 SSW 2 13 38 43 28 124 SW 1 28 46 17 7 100 WSW 4 28 38 23 17 110 W 7 38 33 13 5 96 WNW 3 38 36 42 4 123 NW 5 23 28 6 0 62 NNW 3 14 18 1 0 36 Variable 0 0 0 0 0 0 Total 4 68 324 380 231 99 1106 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 6 Hours of missing stability measurements in all stability classes: 3 F-11

Braidwood Generating Station Period of Record: January - March 2007 Stability Class - Slightly Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 15 2 0 18 NNE 0 1 9 2 0 12 NE 0 0 7 1 6 18 ENE 0 2 5 0 0 8 E 0 6 11 7 2 30 ESE 0 4 15 14 9 43 SE 1 3 6 16 1 27 SSE 0 8 7 4 9 28 S 0 1 10 12 9 42 SSW 0 2 6 12 32 57 SW 0 8 15 16 10 51 WSW 0 3 18 12 3 36 W 0 4 24 25 2 55 WNW 0 7 26 65 11 112 NW 0 9 33 19 0 61 NNW 0 1 23 12 0 36 Variable 0 0 0 0 0 0 Total 1 60 230 219 94 30 634 Hours of calm in this stability class: 6 Hours of missing wind measurements in this stabili ty class: 18 Hours of missing stability measurements in all stability cl asses: 3 F- 12

Braidwood Generating Station Period of Record: January - March 2007 Stability Class - Moderately Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 3 NNE 0 0 1 NE 0 0 0 ENE 0 0 0 E 0 0 0 ESE 0 0 1 SE 0 0 0 SSE 0 0 6 S 0 1 1 SSW 0 1 3 SW 0 0 0 11 WSW 0 0 0 8 W 0 2 8 15 0 25 WNW 0 2 15 13 0 0 30 NW 0 0 19 10 0 0 29 NNW 0 0 3 1 0 0 4 Variable 0 0 0 0 0 0 0 Total 0 6 58 48 10 0 122 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F- 13

Braidwood Generating Station Period of Record: January - March 2007 Stability Class - Extremely Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 5 0 0 0 5 N 0 0 1 0 0 0 1 NNE 0 0 1 0 0 0 1 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 1 0 0 0 1 SSW 0 0 0 0 1 0 1 SW 0 0 0 0 0 0 1 WSW 0 1 5 2 0 0 7 W 0 0 0 2 0 0 2 WNW 0 0 0 0 0 0 0 NW 0 0 2 0 0 0 2 NNW 0 0 0 0 0 0 0 Variable 0 0 Total 0 1 15 4 1 0 21 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes: 3 F- 14

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Extremely Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 2 0 0 0 3 NNE 0 3 9 1 0 0 13 NE 0 13 23 0 0 0 36 ENE 1 18 1 0 0 0 20 E 0 14 9 0 0 0 23 ESE 1 10 6 0 0 0 17 SE 0 9 3 0 0 0 12 SSE 0 4 7 0 0 0 11 S 0 1 18 2 1 0 22 SSW 0 0 4 8 5 0 17 SW 0 2 3 4 0 0 9 WSW 0 4 11 2 2 0 19 W 0 9 6 2 0 0 17 WNW 0 6 19 3 0 0 28 NW 0 11 17 11 0 0 39 NNW 0 7 11 1 0 0 19 Variable 0 0 0 0 0 0 0 Total 2 112 149 34 8 0 305 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 2 Hours of missing stability measurements in all stability classes: 0 F- 15

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 1 1 0 0 4 NNE 1 4 3 0 0 0 8 NE 2 5 6 0 0 0 13 ENE 2 2 0 0 0 0 4 E 0 7 6 0 0 0 13 ESE 0 2 1 0 0 0 3 SE 0 8 0 0 0 0 8 SSE 0 8 2 0 0 0 10 S 0 3 4 1 1 0 9 SSW. 0 2 2 2 4 0 10 SW 0 2 4 2 0 0 8 WSW 0 2 11 2 1 0 16 W 0 2 4 2 1 0 9 WNW 1 3 5 0 0 0 9 NW 1 4 3 2 0 0 10 NNW 0 4 2 1 0 0 7 Variable 0 0 0 0 0 0 0 Total 7 60 54 13 7 0 141 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 F- 16

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Slightly Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 5 0 0 0 0 5 NNE 0 1 5 1 0 0 7 NE 2 4 4 0 0 0 10 ENE 1 3 4 0 0 0 8 E 1 5 0 0 0 0 6 ESE 0 3 1 0 0 0 4 SE 0 4 1 0 0 0 5 SSE 0 8 3 0 0 0 11 S 0 6 3 1 0 0 10 SSW 0 3 3 3 2 0 11 SW 0 3 1 0 2 0 6 WSW 0 4 4 0 0 0 8 W 0 3 2 3 1 0 9 WNW 0 8 2 1 0 0 11 NW 0 5 3 0 0 0 8 NNW 0 4 3 0 0 0 7 Variable 0 0 0 0 0 0 0 Total 4 69 39 9 5 0 126 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 F- 17

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Neutral - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 6 7 0 0 0 13 NNE 1 15 31 1 0 0 48 NE 2 24 23 5 0 0 54 ENE 12 38 22 3 0 0 75 E 10 41 14 0 0 0 65 ESE 4 16 12 0 0 0 32 SE 1 13 4 0 0 0 18 SSE 0 18 4 1 0 0 23 S 0 12 25 6 1 0 44 SSW 0 10 16 6 11 0 43 SW 2 15 20 12 2 0 51 WSW 1 20 17 1 0 0 39 W 1 29 20 12 0 0 62 WNW 2 17 43 13 3 0 78 NW 5 17 15 3 0 0 40 NNW 5 8 14 0 0 0 27 Variable 0 0 0 0 0 0 0 Total 46 299 287 63 17 0 712 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 F- 18

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Slightly Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 9 3 0 0 0 13 NNE 11 17 10 0 0 38 NE 12 23 1 3 0 39 ENE 33 18 0 1 0 52 E 38 22 0 0 0 60 ESE 10 24 8 0 0 42 SE 7 32 5 0 0 44 SSE 5 41 16 1 0 63 S 1 34 34 10 0 81 SSW 1 7 19 8 0 35 SW 2 17 11 0 0 30 WSW 5 35 4 0 0 44 W 8 24 3 0 0 35 WNW 13 16 5 0 0 34 NW 6 12 2 0 0 20 NNW 4 12 1 0 0 17 Variable 0 0 0 0 0 0 Total 157 343 122 23 0 647 Hours of calm in this stability class: 7 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 F- 19

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Moderately Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 1 0 0 0 0 N 0 1 0 0 0 0 NNE 2 1 3 0 0 0 0 NE 3 0 3 0 0 0 0 0 ENE 20 20 0 0 0 0 E 10 3 13 0 0 0 0 ESE 11 1 12 0 0 0 0 SE 3 3 6 0 0 0 0 SSE 5 0 5 1 0 0 0 0 S 1 2 1 1 0 0 0 SSW 0 2 1 0 0 0 0 SW 3 4 0 0 0 0 WSW 2 7 9 0 0 0 0 W 4 3 7 0 0 0 0 WNW 10 1 11 0 0 0 0 NW 6 0 6 0 0 0 0 NNW 2 6 8 0 0 0 0 Variable 0 0 0 Total 82 29 1 0 0 0 112 Hours of calm in this stability class: 19 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 F- 20

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Extremely Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 NNE 0 NE 5 ENE 2 E 7 ESE 6 SE 3 SSE 0 S 2 SSW 2 SW 3 WSW 6 W 4 WNW 4 NW 4 NNW 4 Variable 0 Total 52 20 60 Hours of calm in this stability class: 52 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 F-21

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 1 3 5 1 0 10 NE 0 5 5 21 2 0 33 ENE 1 12 12 0 0 0 25 E 2 7 7 8 0 0 24 ESE 1 5 8 2 5 0 21 SE 0 1 7 3 0 0 11 SSE 0 1 3 6 0 0 10 S 0 0 6 13 2 1 22 SSW 0 0 1 2 6 8 17 SW 0 2 0 4 3 0 9 WSW 0 3 2 9 0 2 16 W 0 3 7 3 2 0 15 WNW 0 3 7 15 4 0 29 NW 0 3 10 13 17 0 43 NNW 0 6 11 4 1 0 22 Variable 0 0 0 0 0 0 0 Total 4 52 89 108 43 11 307 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 F- 22

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 4 NNE 0 0 3 NE 1 0 14 ENE 3 0 7 E 0 0 12 ESE 0 1 3 SE 0 0 8 SSE 1 0 8 S 0 1 13 SSW 0 5 11 SW 0 0 5 WSW 0 1 15 W 0 1 11 WNW 0 1 9 NW 0 0 9 NNW 0 0 9 Variable 0 0 0 Total 5 37 40 37 12 10 141 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 F- 23

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Slightly Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 4 NNE 0 0 6 NE 1 0 9 ENE 0 0 9 E 0 0 8 ESE 0 0 5 SE 0 0 4 SSE 0 0 7 S 0 0 13 SSW 0 3 12 SW 0 2 5 WSW 0 0 8 W 0 1 6 WNW 0 5 3 2 0 3 13 NW 0 3 4 2 2 0 11 NNW 0 3 1 1 1 0 6 Variable 0 0 0 0 0 0 0 Total 1 39 40 29 8 9 126 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 F- 24

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Neutral - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 8 2 0 0 11 NNE 1 2 18 19 2 0 42 NE 0 5 14 27 10 0 56 ENE 0 15 23 21 5 0 64 E 1 14 24 33 7 2 81 ESE 0 7 12 6 5 3 33 SE 0 0 6 9 0 0 15 SSE 0 8 8 1 0 0 17 S 0 3 11 23 8 4 49 SSW 0 2 8 14 5 16 45 SW 2 5 16 9 12 3 47 WSW 0 3 23 14 1 0 41 W 0 7 17 8 6 1 39 WNW 1 7 14 33 8 20 83 NW 1 8 10 21 20 1 61 NNW 0 10 5 11 1 0 27 Variable 0 0 0 0 0 0 0 Total 6 97 217 251 90 50 711 Hours of calm in this stability class: 2 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 F- 25

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Slightly Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 8 3 0 12 NNE 3 13 10 1 27 NE 7 21 7 3 39 ENE 15 35 1 1 55 E 7 31 16 0 55 ESE 3 21 15 5 44 SE 5 23 14 2 44 SSE 4 15 14 10 44 S 0 26 46 20 98 SSW 2 10 24 12 55 SW 2 13 8 2 26 WSW 3 17 18 0 38 W 1 18 12 0 32 WNW 4 18 13 1 36 NW 7 15 8 0 30 NNW 5 11 1 0 19 Variable 0 0 0 0 0 Total 10 69 295 210 57 13 654 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 F- 26

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Moderately Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 6 0 10 NNE 1 1 1 0 3 NE 1 2 4 0 7 ENE 0 7 6 0 13 E 1 3 13 0 18 ESE 0 0 9 SE 1 0 9 SSE 0 0 8 S 0 0 1 SSW 2 0 6 SW 0 0 4 WSW 0 0 5 W 0 0 9 WNW 0 0 11 NW 1 0 8 NNW 1 0 9 Variable 0 0 0 Total 8 30 71 21 0 0 130 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 F - 27

Braidwood Generating Station Period of Record: April - June 2007 Stability Class - Extremely Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

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

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 8 58 32 14 0 0 112 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabili ty class: 0 Hours of missing stability measurements in all sta bility classes: 0 F- 28

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Extremely Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 NNE 0 3 4 7 NE 0 18 1 19 ENE 2 17 0 19 E 0 4 0 4 ESE 0 5 0 5 SE 0 2 2 4 SSE 0 3 1 4 S 0 1 12 15 SSW 0 7 24 36 SW 0 0 8 10 WSW 0 9 5 17 W 0 11 5 19 WNW 0 19 3 22 NW 1 14 6 21 NNW 0 10 4 14 Variable 0 0 0 0 Total 3 123 75 15 0 0 216 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 2 Hours of missing stability measurements in all stability cl asses: 11 F- 29

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 3 4 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 4 0 0 0 0 4 NNE 0 7 5 0 0 0 12 NE 1 15 0 0 0 0 16 ENE 1 13 0 0 0 0 14 E 0 5 0 0 0 0 5 ESE 1 7 0 0 0 0 8 SE 2 3 0 0 0 0 5 SSE 0 2 2 0 0 0 4 S 1 4 3 2 0 0 10 SSW 0 11 13 2 0 0 26 SW 0 4 6 3 0 0 13 WSW 1 8 6 0 0 0 15 W 0 10 1 1 0 0 12 WNW 0 3 0 1 0 0 4 NW 1 10 1 0 0 0 12 NNW 0 10 2 0 0 0 12 Variable 0 0 0 0 0 0 0 Total 8 116 39 9 0 0 172 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 11 F- 30

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Slightly Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 0 0 0 0 N 0 3 3 2 0 0 0 NNE 2 5 9 1 0 0 0 NE 0 7 8 0 0 0 0 ENE 2 5 7 0 0 0 0 E 4 2 6 0 0 0 0 ESE 0 3 3 1 0 0 0 SE 2 6 9 0 0 0 0 SSE 1 8 9 3 0 0 0 S 0 9 12 8 1 0 0 SSW 0 5 14 9 1 0 0 SW 0 4 14 2 0 0 0 WSW 0 7 9 4 0 0 0 W 0 8 12 0 0 0 0 WNW 3 4 7 0 0 0 0 NW 0 8 8 2 0 0 0 NNW 0 10 12 0 0 0 0 Variable 0 0 0 Total 14 94 32 2 0 0 142 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 11 F-31

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Neutral - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 7 2 0 0 0 12 NNE 6 25 7 0 0 0 38 NE 12 31 2 0 0 0 45 ENE 19 20 0 0 0 0 39 E 16 5 0 0 0 0 21 ESE 4 10 1 0 0 0 15 SE 2 20 4 0 0 0 26 SSE 2 22 4 0 0 0 28 S 1 10 34 7 0 0 52 SSW 1 16 25 4 0 0 46 SW 1 23 34 5 0 0 63 WSW 4 21 5 1 0 0 31 W 2 23 7 0 0 0 32 WNW 6 16 2 0 0 0 24 NW 7 11 2 0 0 0 20 NNW 3 13 18 0 0 0 34 Variable 0 0 0 0 0 0 0 Total 89 273 147 17 0 0 526 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 11 F- 32

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Slightly Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 8 19 2 0 0 0 29 NNE 15 23 2 0 0 0 40 NE 24 13 1 0 0 0 38 ENE 37 7 0 0 0 0 44 E 32 8 0 0 0 0 40 ESE 10 35 0 0 0 0 45 SE 7 49 6 0 0 0 62 SSE 7 53 22 0 0 0 82 S 6 48 20 0 0 0 74 SSW 5 18 33 2 0 0 58 SW 7 10 19 0 0 0 36 WSW 9 18 1 0 0 0 28 W 15 13 1 0 0 0 29 WNW 17 8 2 0 0 0 27 NW 10 10 0 0 0 0 20 NNW 2 20 4 0 0 0 26 Variable 0 0 0 0 0 0 0 Total 211 352 113 2 0 0 678 Hours of calm in this stability class: 9 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 11 F- 33

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Moderately Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 9 1 0 10 NNE 14 5 0 19 NE 14 0 0 14 ENE 17 0 0 17 E 43 2 0 45 ESE 22 15 0 37 SE 2 10 0 12 SSE 3 7 0 10 S 5 3 0 8 SSW 3 3 0 6 SW 4 2 1 7 WSW 9 12 0 21 W 11 0 0 11 WNW 19 1 0 20 NW 9 2 0 11 NNW 6 1 0 7 Variable 0 0 0 0 Total 190 64 1 0 0 0 255 Hours of calm in this stability class: 24 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability cl asses: 11 F- 34

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Extremely Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 14 0 0 0 0 0 14 NNE 12 1 0 0 0 0 13 NE 5 0 0 0 0 0 5 ENE 13 0 13 E 15 0 15 ESE 9 0 9 SE 4 0 4 SSE 2 0 2 S 1 0 1 SSW 4 0 4 SW 2 0 2 WSW 6 0 7 W 15 0 15 WNW 7 0 7 NW 8 0 8 NNW 4 0 4 Variable 0 0 0 Total 121 0 123 Hours of calm in this stability class: 50 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 11 F- 35

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 0 0 0 1 NNE 0 2 5 0 0 0 7 NE 0 9 7 0 0 0 16 ENE 1 10 11 0 0 0 22 E 0 4 0 0 0 0 4 ESE 0 1 2 0 0 0 3 SE 0 2 3 1 0 0 6 SSE 0 1 2 0 0 0 3 S 0 0 5 7 2 0 14 SSW 0 0 18 12 5 0 35 SW 0 1 2 8 2 0 13 WSW 0 3 2 4 2 0 11 W 0 6 9 3 3 1 22 WNW 0 9 17 2 0 0 28 NW 1 8 7 5 0 0 21 NNW 0 4 5 1 0 0 10 Variable 0 0 0 0 0 0 0 Total 2 60 96 43 14 1 216 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 2 Hours of missing stability measurements in all stability classes: 11 F- 36

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Moderately Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 3 0 0 0 0 3 NNE 0 5 6 2 0 0 13 NE 0 8 6 0 0 0 14 ENE 1 10 5 0 0 0 16 E 0 3 1 0 0 0 4 ESE 1 6. 2 0 0 0 9 SE 1 2 0 0 0 0 3 SSE 0 .3 0 0 0 0 3 S 0 2 3 4 1 0 10 SSW 1 4 8 7 1 2 23 SW 0 3 5 7 2 0 17 WSW 1 3 4 4 0 0 12 W 0 6 4 3 1 0 14 WNW 0 3 3 0 1 0 7 NW 0 5 5 2 0 0 12 NNW 0 7 4 1 0 0 12 Variable 0 0 0 0 0 0 0 Total 5 73 56 30 6 2 172 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 11 F- 37

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Slightly Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed.(in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 4 NNE 0 0 8 NE 2 0 10 ENE 0 0 7 E 0 0 3 ESE 2 0 7 SE 1 0 9 SSE 0 0 6 S 1 0 12 SSW 0 0 11 SW 0 0 17 WSW 0 0 7 W 0 0 13 WNW 1 0 7 NW 1 0 9 NNW 0 0 12 Variable 0 0 0 Total 8 59 50 23 0 142 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 11 F-38

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Neutral - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 6 4 2 14 NNE 3 13 16 3 35 NE 1 11 17 8 37 ENE 6 23 11 0 40 E 6 14 6 0 26 ESE 2 6 8 2 18 SE 2 9 8 6 25 SSE 2 5 11 4 22 S 0 4 9 20 49 SSW 1 3 17 18 49 SW 2 4 28 29 68 WSW 0 8 14 3 28 W 1 12 12 7 32 WNW 1 4 14 3 24 NW 2 9 4 7 22 NNW 3 10 15 9 37 Variable 0 0 0 0 0 Total 34 141 194 121 31 5 526 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 11 F- 39

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Slightly Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 3 21 5 0 0 30 NNE 3 4 19 4 0 0 30 NE 1 5 27 2 0 0 35 ENE 2 15 26 1 0 0 44 E 1 13 25 3 0 42 ESE 2 7 17 9 0 35 SE 1 5 26 26 0 58 SSE 0 4 37 40 0 90 S 1 6 21 29 0 63 SSW 1 6 19 44 1 78 SW 2 11 8 22 0 46 WSW 3 5 13 6 0 28 W 1 8 8 5 0 22 WNW 0 10 15 5 0 30 NW 2 6 12 4 0 0 24 NNW 0 3 20 9 0 0 32 Variable 0 0 0 0 0 0 0 Total 21 111 314 214 26 1 687 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 11 F - 40

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Moderately Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 1 5 0 0 0 N 7 5 6 0 0 NNE 4 16 NE 2 13 3 0 0 20 ENE 8 9 0 0 0 19 E 5 21 3 0 0 29 ESE 4 13 21 0 0 39 SE 6 12 11 0 0 29 SSE 1 5 1 0 0 7 S 1 5 2 0 0 8 SSW 2 9 0 0 0 14 SW 3 5 1 0 0 11 WSW 3 6 6 0 0 17 W 3 6 1 0 0 12 WNW 0 15 0 0 0 16 NW 7 7 2 0 0 17 NNW 1 16 0 0 0 17 Variable 0 0 0 0 0 0 Total 18 51 152 57 0 0 278 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 11 F- 41

Braidwood Generating Station Period of Record: July - September 2007 Stability Class - Extremely Stable -. 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 3 10 0 0 0 13 NNE 0 1 5 2 0 0 8 NE 1 5 3 5 0 0 14 ENE 1 1 4 0 0 0 6 E 1 7 7 1 0 0 16 ESE 2 4 10 3 0 0 19 SE 3 2 1 2 0 0 8 SSE 4 3 0 0 0 0 7 S 2 3 0 0 0 0 5 SSW 3 10 1 0 0 0 14 SW 2 5 3 0 0 0 10 WSW 1 3 3 0 0 0 7 W 3 4 6 1 0 0 14 WNW 0 2 4 1 0 0 7 NW 0 4 9 1 0 0 14 NNW 2 2 4 0 0 0 8 Variable 0 0 0 0 0 0 0 Total 25 59 70 16 0 0 170 Hours of calm in this stability class: 3 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability cliasses: 11 F - 42

Braidwood Generating Station Period of Record: October - December2007 Stability Class - Extremely Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 NNE 0 0 0 2 0 2 NE 0 0 0 0 0 0 ENE 0 1 0 0 0 1 E 0 0 0 0 0 0 ESE 0 0 0 0 0 0 SE 0 0 0 0 0 0 SSE 0 0 1 0 0 1 S 0 0 1 0 0 1 SSW 0 0 5 2 0 7 SW 0 0 1 0 0 1 WSW 0 0 1 1 0 2 W 0 0 1 4 0 5 WNW 0 0 12 2 0 14 NW 0 5 15 2 0 22 NNW 0 0 2 0 0 2 Variable 0 0 0 0 0 0 Total 0 6 39 13 0 0 58 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabili ty class: 0 Hours of missing stability measurements in all sta bility classes: 3 F - 43

Braidwood Generating Station Period of Record: October - December2007 Stability Class- Moderately Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 3 4 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 NNE 0 0 3 NE 1 0 2 ENE 1 0 1 E 0 0 1 ESE 0 0 0 SE 0 0 0 SSE 0 0 1 S 0 0 10 SSW 0 0 6 SW 0 2 8 0 0 0 10 WSW 0 2 0 1 0 0 3 W 0 1 1 0 0 0 2 WNW 0 3 5 1 0 0 9 NW 1 3 7 1 0 0 12 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 3 15 38 5 0 0 61 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-44

Braidwood Generating Station Period of Record: October - December2007 Stability Class - Slightly Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 3 1 0 0 8 NNE 3 0 0 0 0 3 NE 2 1 0 0 0 4 ENE 3 0 0 0 0 3 E 2 0 0 0 0 5 ESE 1 0 0 0 0 1 SE 0 1 0 0 0 1 SSE 3 2 0 0 0 5 S 5 1 0 0 0 6 SSW 3 8 0 4 0 15 SW 2 7 1 1 0 11 WSW 3 1 0 3 0 8 W 6 2 2 0 0 10 WNW 3 6 1 0 0 10 NW 1 4 0 0 0 5 NNW 5 7 1 0 0 13 Variable 0 0 0 0 0 0 Total 6 45 43 6 8 0 108 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F - 45

Braidwood Generating Station Period of Record: October - December2007 Stability Class - Neutral - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 18 18 6 0 0 45 NNE 4 34 24 2 0 0 64 NE 6 24 22 0 0 0 52 ENE 9 14 0 0 0 0 23 E 11 16 0 0 0 0 27 ESE 1 11 12 1 0 0 25 SE 2 29 27 6 0 0 64 SSE 2 41 48 9 1 0 101 S 0 20 37 17 3 0 77 SSW 0 20 41 26 8 0 95 SW 2 24 45 5 0 0 76 WSW 4 27 33 16 14 0 94 W 8 26 35 17 1 0 87 WNW 7 42 44 16 0 0 109 NW 10 12 26 2 0 0 50 NNW 5 36 39 8 0 0 88 Variable 0 0 0 0 0 0 0 Total 74 394 451 131 27 0 1077 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 6 Hours of missing stability measurements in all stability classes: 3 F - 46

Braidwood Generating Station Period of Record: October - December2007 Stability Class - Slightly Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 6 9 7 0 0 0 22 NNE 5 6 2 0 0 0 13 NE 14 6 1 0 0 0 21 ENE 18 9 0 0 0 0 27 E 8 9 0 0 0 0 17 ESE 14 33 4 0 0 0 51 SE 4 35 11 1 0 0 51 SSE 9 42 20 1 0 0 72 S 1 50 49 16 0 0 116 SSW 3 13 42 11 0 0 69 SW 4 15 15 0 0 0 34 WSW 6 32 4 1 0 0 43 W 11 16 3 0 0 0 30 WNW 17 34 11 0 0 0 62 NW 9 19 5 .0 0 0 33 NNW 5 13 0 0 0 0 18 Variable 0 0 0 0 0 0 0 Total 134 341 174 30 0 0 679 Hours of calm in this stability class: 5 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F - 47

Braidwood Generating Station Period of Record: October - December2007 Stability Class - Moderately Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 1 0 4 NNE 1 0 0 1 NE 0 0 0 0 ENE 1 0 0 1 E 8 0 0 8 ESE 6 3 0 9 SE 6 8 0 14 SSE 6 9 0 15 S 2 4 0 6 SSW 3 6 5 14 SW 3 2 0 5 WSW 5 7 0 12 W 11 6 0 17 WNW 15 2 0 17 NW 12 0 0 12 NNW 3 0 0 3 Variable 0 0 0 0 Total 85 48 5 0 138 Hours of calm in this stability class: 4 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F - 48

Braidwood Generating Station Period of Record: October - December2007 Stability Class - Extremely Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 34 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 0 0 0 0 N 0 0 0 0 0 0 0 NNE 1 0 1 0 0 0 0 NE 1 0 1 0 0 0 0 0 ENE 0 0 1 0 0 0 0 E 0 1 0 0 0 0 ESE 9 1 10 0 0 0 0 SE 4 2 6 0 0 0 0 SSE 2 0 2 0 0 0 0 S 1 0 1 0 0 0 0 SSW 1 0 1 0 0 0 0 SW 1 0 1 0 0 0 0 WSW 4 4 8 0 0 0 0 W 10 1 11 0 0 0 0 WNW 9 0 9 4 0 0 0 0 NW 0 4 1 0 0 0 0 NNW 0 1 0 0 0 0 0 Variable 0 0 Total 49 8 0 0 0 0 57 Hours of calm in this stability class: 10 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes: 3 F - 49

Braidwood Generating Station Period of Record: October - December2007 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 0 1 1 0 2 NE 0 0 0 0 0 0 0 ENE 0 1 0 0 0 0 1 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 1 0 0 1 S 0 0 1 0 1 0 2 SSW 0 0 2 3 0 0 5 SW 0 0 0 2 0 0 6 WSW 0 0 0 1 0 0 1 W 0 0 0 2 4 0 6 WNW 0 0 1 7 4 1 13 NW 0 2 5 8 8 0 23 NNW 0 0 2 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 0 3 11 25 18 1 58 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-50

Braidwood Generating Station Period of Record: October - December2007 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 1 1 0 2 NNE 0 0 0 2 0 0 2 NE 0 1 0 1 0 0 2 ENE 0 1 0 0 0 0 1 E 0 0 1 0 0 0 1 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 1 0 0 0 1 S 0 0 6 5 1 0 12 SSW 0 0 3 1 1 0 5 SW 0 0 5 4 0 0 9 WSW 0 0 1 1 1 0 3 W 0 0 1 1 0 0 2 WNW 0 3 0 5 1 0 9 NW 0 4 0 5 3 0 12 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 9 18 26 8 0 61 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F-51

Braidwood Generating Station Period of Record: October - December2007 Stability Class - Slightly Unstable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 6 NNE 0 0 3 NE 0 0 4 ENE 1 0 2 E 0 0 5 ESE 0 0 2 SE 0 0 1 SSE 0 0 4 S 0 0 7 SSW 0 4 15 SW 0 0 9 WSW 0 4 11 W 0 0 5 WNW 0 3 2 3 4 0 12 NW 0 4 0 6 1 0 11 NNW 0 3 4 3 0 0 10 Variable 0 0 0 0 0 0 0 Total 1 29 31 32 6 8 107 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes: 3 F- 52

Braidwood Generating Station Period of Record: October - December2007 Stability Class - Neutral - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 10 14 14 5 1 44 NNE 5 9 19 17 7 0 57 NE 1 11 24 18 4 0 58 ENE 0 10 12 0 1 0 23 E 1 10 10 3 0 0 24 ESE 0 2 11 13 2 0 28 SE 2 3 21 17 15 2 60 SSE 0 9 39 29 12 4 93 S 0 1 29 30 13 8 81 SSW 0 5 25 31 31 10 102 SW 2 5 31 26 7 0 71 WSW 1 9 23 23 14 16 86 W 2 12 23 27 20 4 88 WNW 0 11 17 29 24 10 91 NW 5 3 19 28 23 5 83 NNW 1 15 28 31 7 0 82 Variable 0 0 0 0 0 0 0 Total 20 125 345 336 185 60 1071 Hours'of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 13 Hours of missing stability measurements in all stability classes: 3 F - 53

Braidwood Generating Station Period of Record: October - December2007 Stability Class - Slightly Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 5 11 8 0 0 24 NNE 0 5 3 5 0 0 13 NE 0 12 8 3 0 0 23 ENE 0 12 13 0 1 0 26 E 0 3 3 6 0 0 12 ESE 0 2 25 23 2 0 52 SE 0 1 22 14 3 1 41 SSE 0 10 24 15 4 0 53 S 0 4 28 52 24 9 117 SSW 2 4 18 41 17 5 87 SW 0 5 16 24 4 0 49 WSW 1 9 16 11 1 0 38 W 1 5 11 9 0 0 26 WNW 2 3 17 22 4 0 48 NW 0 3 26 20 7 0 56 NNW 2 1 12 2 0 0 17 Variable 0 0 0 0 0 0 0 Total 8 84 253 255 67 15 682 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 2 Hours of missing stability measurements in all stability classes: 3 F- 54

Braidwood Generating Station Period of Record: October - December2007 Stability Class - Moderately Stable - 199Ft-3OFt Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 7 0 0 0 N 1 0 8 1 0 0 0 NNE 0 1 2 0 0 0 0 NE 0 0 0 1 0 0 0 ENE 0 1 2 E 0 0 3 1 0 0 4 ESE 0 0 2 4 0 0 6 SE 0 1 1 3 0 0 5 SSE 0 1 6 5 0 0 12 S 0 4 10 3 0 0 17 SSW 0 2 7 0 2 0 11 SW 0 4 2 3 2 0 11 WSW 0 2 4 1 0 0 7 W 0 0 6 4 0 0 10 WNW 0 2 11 4 0 0 17 NW 0 1 7 4 0 0 12 NNW 0 1 15 2 0 0 18 Variable 0 0 0 0 0 0 0 Total 1 20 83 34 4 0 142 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F- 55

Braidwood Generating Station Period of Record: October - December2007 Stability Class - Extremely Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet Wind Speed (in mph)

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

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 2 28 24 14 0 0 68 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 F- 56

APPENDIX G ANNUAL RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM REPORT (ARGPPR)

Docket No: 50-456 50-457 BRAIDWOOD STATION UNITS 1 and 2 Annual Radiological Groundwater Protection Program Report 1 January Through 31 December 2007 Prepared By Teledyne Brown Engineering Environmental Services

~ ll sm Nuclear Braidwood Station Braceville, IL 60407 May 2008

Table Of Contents I. Sum m ary and Conclusions ................................................................................................ J I1. Introduction ........................................................................................................................ 2 A. Objectives of the RG PP ................................................................................... 2 B. Im plem entation of the Objectives ..................................................................... 2 C. Program Description ......................................................................................... 3 D. Characteristics of Tritium (H-3) ....................................................................... 4 Ill. Program Description ................................................................................................... 4 A. Sam ple Analysis ................................................................................................ 4 B. Data Interpretation ........................................................................................... 5 C. Background Analysis ......................................................................................... 6

1. Background Concentrations of Tritium .................................................. 6 IV. Results and Discussion ............................................................................................. 8 A. Groundwater Results ......................................................................................... 8 B. Surface Water Results ....................................................................................... 9 B. Drinking W ater W ell Survey ............................................................................ 10 C. Summary of Results - Inter-laboratory Comparison Program ....................... 10 D. Leaks, Spills, and Releases .......................................................................... 10 E. Trends ............................................................................................................ 10 F. Investigations .................................................................................................. 10 G . Actions Taken ................................................................................................ 10

Appendices Appendix A Location Designation Tables Table A-i: Radiological Groundwater Protection Program - Sampling Locations, Braidwood Station, 2007 Figures Figure A-i: Sampling Locations Near the Site Boundary of the Braidwood Station, West Side, 2007 Figure A-2: Sampling Locations Near the Site Boundary of the Braidwood Station East Side, 2007 Figure A-3: Sampling Locations Near Vacuum Breaker #1 Figure A-4: Sampling Locations Near Vacuum Breakers #2 and #3 Appendix B Data Tables Tables Table B-I.1 Concentrations of Tritium in Groundwater Samples Collected in the Vicinity of Braidwood Station, 2007.

Table B-1.2 Concentrations of Strontium in Groundwater Samples Collected in the Vicinity of Braidwood Station, 2007.

Table B-1.3 Concentrations of Gamma Emitters in Groundwater Samples Collected in the Vicinity of Braidwood Station, 2007.

Table B-1I.1 Concentrations of Tritium in Surface Water Samples Collected in the Vicinity of Braidwood Station, 2007.

ii

Intentionally left blank 1

I. Summary and Conclusions In 2007, Exelon continued a comprehensive program that evaluates the impact of station operations on groundwater and surface water in the vicinity of Braidwood Station. This evaluation involved numerous station personnel and contractor support personnel. This report covers groundwater and surface water samples, collected from the environment, both on and off station property in 2007. During that time period, 1012 analyses were performed on 964 samples from 295 locations.

In assessing all the data gathered for this report, it was concluded that the operation of Braidwood Station had no adverse radiological impact on the environment. There were two known releases to soil at Braidwood Station in 2007. These releases did not impact the environment beyond the site boundary.

Gamma-emitting radionuclides associated with licensed plant operations were not detected at concentrations greater than their respective Lower Limits of Detection (LLDs) as specified in the Offsite Dose Calculation Manual (ODCM) in any of the groundwater or surface water samples except for Potassium-40. In the case of tritium, Exelon specified that it's laboratories achieve a lower limit of detection 10 times lower than that required by federal regulation.

Strontium-89/90 was not detected at a concentration greater than the LLD of 2.0 picoCuries per liter (pCi/L) in any of the groundwater or surface water samples tested.

Tritium was detected in the groundwater samples at concentrations greater than the United States Environmental Protection Agency (USEPA) drinking water standard (and the Nuclear Regulatory Commission Reporting Limit) of 20,000 pCi/L. Tritium greater than 20,000 pCi/L was detected in 9 of 998 analyses.

Tritium was not detected in any surface water samples greater than 20,000 pCi/L. Low levels of tritium were detected at concentrations greater than the LLD of 200 pCi/L in 338 of 998 analyses. The tritium concentrations ranged from 201

+/- 100 pCi/L to 78,123 + 757 pCi/L. The tritium that was detected in the groundwater is believed to be the result of isolated historical releases and/or background from external sources greater than 200 pCi/L. With ongoing investigation of the site groundwater, the Radiological Groundwater Protection Program (RGPP) will continue to expand as needed.

1

II. Introduction The Braidwood Station, consisting of two 3587 MWt pressurized water reactors owned and operated by Exelon Corporation, is located in Will County, Illinois.

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

This report covers those analyses performed by Teledyne Brown Engineering (TBE) and Environmental Inc. Midwest Labs (EIML) on samples collected in 2007.

A. Objective of the RGPP The long-term objectives of the RGPP are as follows:

1. Identify suitable locations to monitor and evaluate potential impacts from station operations before significant radiological impact to the environment and potential drinking water sources.
2. Understand the local hydrogeologic regime in the vicinity of the station and maintain up-to-date knowledge of flow patterns on the surface and shallow subsurface.
3. Perform routine water sampling and radiological analysis of water from selected locations.
4. Report new leaks, spills, or other detections with potential radiological significance to stakeholders in a timely manner.
5. Regularly assess analytical results to identify adverse trends.
6. Take necessary corrective actions to protect groundwater resources.

B. Implementation of the Objectives The objectives identified have been implemented at Braidwood Station as discussed below:

1. Exelon identified locations to monitor and evaluate potential impacts from station operations.
2. The Braidwood Station reports describe the local hydrogeologic regime. Periodically, the flow patterns on the surface and shallow subsurface are updated based on ongoing measurements.
3. Braidwood Station will continue to perform routine sampling and radiological analysis of water from selected locations.
4. Braidwood Station has implemented procedures to identify and report new leaks, spills, or other detections with potential radiological significance in a timely manner.
5. Assessed results to monitor for adverse trends.
6. Braidwood Station staff and consulting hydrogeologist assess analytical results on an ongoing basis to identify adverse trends.

C. Program Description

1. Sample Collection Sample locations can be found in Table A-1 and Figures A-1 through A-4, Appendix A.

Groundwater and Surface Water Samples of water are collected, managed, transported and analyzed in accordance with approved procedures following EPA methods. Both groundwater and surface water are collected.

Sample locations, sample collection frequencies and analytical frequencies are controlled in accordance with approved station procedures. Contractor and/or station personnel are trained in the collection, preservation management, and shipment of samples, as well as in documentation of sampling events. Analytical laboratories are subject to internal quality assurance programs, industry cross-check programs, as well as nuclear industry audits.

Station personnel review and evaluate all analytical data deliverables as data are received.

Analytical data results are reviewed by both station personnel and an independent hydrogeologist for adverse trends or changes to hydrogeologic conditions.

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 the 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.

II1. Program Description A. Sample Analysis This section describes the general analytical methodologies used by Teledyne Brown Engineering (TBE) and Environmental Incorporated Midwest Laboratory (EIML) to analyze the environmental samples for radioactivity for the Braidwood Station RGPP in 2007.

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 Braidwood Station becoming operational were used as a baseline with which these operational data were compared. For the purpose of this report, Braidwood Station was considered operational at initial criticality. Several factors were important in the interpretation of the data:

1. Lower Limit of Detection and Minimum Detectable Concentration The lower limit of detection (LLD) is specified by federal regulation as a minimum sensitivity value that must be achieved routinely by the analytical parameter.
2. Laboratory Measurements Uncertainty The estimated uncertainty in measurement of tritium in environmental samples is frequently on the order of 50% of the measurement value.

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

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

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

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

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

For groundwater and surface water 14 nuclides, Be-7, K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, 1-131, Cs-134, Cs-137, Ba-140 and La-140 were reported.

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

The pre-operational REMP contained analytical results from samples collected from the surface water and groundwater.

At the upstream Kankakee River collection point, BD-7, monthly composites of weekly sample collections from all surface water locations indicated tritium concentrations were not detectable above the LLD

(<200 pCi/L). Monthly composites of weekly sample collections from all surface water locations indicate strontium-89, strontium-90, cesium-1 34 and cesium-1 37 concentrations were less than their specified LLDs.

Groundwater was collected from one off-site well on a quarterly basis.

Gamma isotopic, radiostrontium and tritium analyses were performed on all samples. Strontium-89, strontium-90, tritium and gamma emitters were below their respective LLDs.

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

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

b. Precipitation Data Precipitation samples are routinely collected at stations around the world for the analysis of tritium and other radionuclides. Two publicly available databases that provide tritium concentrations in precipitation are Global Network of Isotopes in Precipitation (GNIP) and USEPA's RadNet database. GNIP provides tritium precipitation concentration data for samples collected world wide from 1960 to 2007.

RadNet provides tritium precipitation concentration data for samples collected at stations through out the U.S. from 1960 up to and including 2007. Based on GNIP data for sample stations located in the U.S. Midwest, tritium concentrations peaked around 1963. This peak, which approached 10,000 pCi/L for some stations, coincided with the atmospheric testing of thermonuclear weapons. Tritium concentrations in surface water showed a sharp decline up until 1975 followed by a gradual decline since that time. Tritium concentrations in Midwest precipitation have typically been below 100 pCi/L since around 1980. Tritium concentrations in wells may still be above the 200 pCi/L detection limit from the external causes described above. Water from previous years and decades is naturally captured in groundwater, so some well water sources today are affected by the surface water from the 1960s that was elevated in tritium.

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

The USEPA RadNet surface water data typically has a reported 'Combined Standard Uncertainty' of 35 to 50 pCi/L.

According to USEPA, this corresponds to a +/-70 to 100 pCi/L 95% confidence bound on each given measurement.

Therefore, the typical background data provided may be subject to measurement uncertainty of approximately +/- 70 to 100 pCi/L.

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

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

IV. Results and Discussion A. Groundwater Results Groundwater Samples were collected from on and off-site wells throughout the year in accordance with the station radiological groundwater protection program. Analytical results and anomalies are discussed below.

Tritium Samples from all locations were analyzed for tritium activity (Table B-1.1, Appendix B). Tritium values ranged from the detection limit to 78,123 pCi/I. The location of the 78,123 pCi/liter sample is within the Exelon owned property. This H-3 is a result of a spill from a failed vacuum breaker. Due to the location of this contamination, additional monitoring is ongoing.

Strontium Strontium-90 was analyzed for in seven samples and was less than the required detection limit of 2.0 pCi/liter. (Table B-1.2, Appendix B).

Gamma Emitters Potassium-40 was detected in 1 of 7 samples. The concentration in the one sample was 71 pCi/L. No other gamma emitting nuclides were detected. (Table B-1.3, Appendix B).

B. Surface Water Results Surface Water Samples were collected from fourteen surface water locations throughout the year in accordance with the station radiological groundwater protection program. Analytical results and anomalies are discussed below.

Samples from all locations were analyzed for tritium activity (Table B-11.1, Appendix B). Tritium values ranged from the detection limit to 352 pCi/l.

C. Samples from all locations were analyzed for tritium activity (Table B-1.1, Appendix B). Tritium values ranged from the detection limit to 78,123 pCi/l. The location of the 78,123 pCi/liter sample is within the Exelon owned property. This H-3 is a result of a spill from a failed vacuum breaker. Due to the location of this contamination, additional monitoring is ongoing.

D. Drinking Water Well Survey Drinking water wells near Braidwood Station were sampled quarterly in 2007.

E. Summary of Results - Inter-Laboratory Comparison Program Inter-Laboratory Comparison Program results for TBE are presented in the AREOR.

F. Leaks, Spills, and Releases Previously identified contaminated groundwater plumes are being addressed by the Braidwood Station tritium remediation activities.

On April 23, 2007 an unlicensed release occurred due to a spill of approximately 5 gallons of water containing 561,300 pCi/L tritium from a Sea/Land container. No gamma emitting radionuclides were detected.

On May 23, 2007 an unlicensed release occurred due to high winds pushing water from the Waste Water Treatment Lagoon and onto the ground. Approximately 1500 gallons of water at 75,000 pCi/L spilled onto the ground. No gamma emitting radionuclides were detected. All reporting requirements have been met.

G. Trends Monitoring of remediation activities indicate that tritium concentrations in affected areas is trending down.

H. Investigations Investigation of historic spills and the groundwater contamination has resulted in groundwater remediation activities at Braidwood Station.

I. Actions Taken

1. Compensatory Actions All Circulating Water Blowdown valve vaults were coated to prevent any leakage of water from the vaults to the groundwater. A remote leakage detection system has been installed which provides continuous monitoring of the vaults. Operations procedures are in place for actions to take in the event the leak detection system alarms.

Walkdowns of the Circulating Water Blowdown pipeline and vaults were performed weekly.

2. Installation of Monitoring Wells Exelon has installed a permanent monitoring well network that ensures that ground water will be appropriately monitored around the plant and at the various remediation sites. Monitoring well locations were based on the kind of up gradient potential contamination source, ground flow direction, and source concentration. Some monitoring points are not primarily used for sampling but rather to measure ground water elevation. Water elevation is used extensively around active remediation sites to verify that ground water is still flowing toward extraction wells.
3. Actions to Recover/Reverse Plumes Vacuum Breaker 1 area: Three extraction wells have been installed in this area to remove contaminated ground water. Monitoring of this activity indicates the remediation is proceeding acceptably.

Vacuum Breakers 4, 6, & 7: Monitoring wells have been installed within and down gradient of these plumes which originated from vacuum breaker valves along the blowdown line. These sites are being remediated by monitored natural attenuation.

Exelon Pond area: The combination of groundwater sample monitoring and water level monitoring ensures that the active remedial pumping of Exelon Pond continues to capture the tritium that spilled from vacuum breakers 2 and 3 almost ten years ago. Monitoring to date has shown marked reduction in the most contaminated area and the station continues to monitor plume capture to determine whether adjustments are needed in the pumping rate.

APPENDIX A LOCATION DESIGNATION

TABLE A-1: Radiological Groundwater Protection Program - Sampling Locations, Braidwood Station, 2007 Station Code Sample Description A-1 Monitoring Well A-1D Monitoring Well BL-03 Monitoring Well BL-05 Monitoring Well BL-06 Monitoring Well BL-06D Monitoring Well BL-07 Monitoring Well CL-08 Monitoring Well BL-09 Monitoring Well BL-09D Monitoring Well BL-10 Monitoring Well BL-10D Monitoring Well BL-1 1 Monitoring Well BL-11D Monitoring Well BL-12 Monitoring Well BL-12D Monitoring Well BL-13 Monitoring Well BL-13D Monitoring Well BL-14 Monitoring Well BL-14D Monitoring Well BL-15 Monitoring Well BL-15D Monitoring Well BL-16 Monitoring Well BL-16D Monitoring Well BL-17 Monitoring Well BL-17D Monitoring Well BL-18 Monitoring Well BL-18D Monitoring Well BL-19D Monitoring Well BL-19R Monitoring Well BL-20D Monitoring Well BL-21 Monitoring Well BL-22 Monitoring Well BL-23 Monitoring Well BL-24 Monitoring Well BL-25 Monitoring Well BL-26 Monitoring Well BL-27 Monitoring Well BL-28 Monitoring Well C-1 Monitoring Well C-1D Monitoring Well C-2 Monitoring Well C-2D Monitoring Well CB-1 Monitoring Well CB-1D Monitoring Well CB-2 Monitoring Well CB-2D Monitoring Well CB-3 Monitoring Well CB-3D Monitoring Well CB-4 Monitoring Well CB-4D Monitoring Well CD-1 Monitoring Well CD-1D Monitoring Well D-1D Monitoring Well D-2D Monitoring Well D-3D Monitoring Well DIAMOND LAKE Surface Water DITCH DS-2 Surface Water DN-1 Monitoring Well A-1

TABLE A-1: Radiological Groundwater Protection Program - Sampling Locations, Braidwood Station, 2007 Station Code Sample Description DN-1D Monitoring Well DN-2 Monitoring Well DN-2D Monitoring Well DN-3 Monitoring Well DN-3D Monitoring Well F-1 Monitoring Well F-1 D Monitoring Well F-3D Monitoring Well F-4D Monitoring Well F-5D Monitoring Well F-6D Monitoring Well F-7D Monitoring Well F-8D Monitoring Well F-9D Monitoring Well G1 Monitoring Well G2 Monitoring Well G2D Monitoring Well G3 Monitoring Well G-4S Monitoring Well G-5S Monitoring Well G-6S Monitoring Well G-7S Monitoring Well H DITCH Surface Water LAKE DISCHARGE CANAL Surface Water MW-101 Monitoring Well MW-102R Monitoring Well MW-103 Monitoring Well MW-104 Monitoring Well MW-105 Monitoring Well MW-105D Monitoring Well MW-106D Monitoring Well MW-107 Monitoring Well MW-109D Monitoring Well MW-11 Monitoring Well MW-110 Monitoring Well MW-111DR Monitoring Well MW-1 12D Monitoring Well MW-113 Monitoring Well MW-113DR Monitoring Well MW-13 Monitoring Well MW-130D Monitoring Well MW-131D Monitoring Well MW-132D Monitoring Well MW-133D Monitoring Well MW-134D Monitoring Well MW-135D Monitoring Well MW-136D Monitoring Well MW-1 37D Monitoring Well MW-1 38D Monitoring Well MW-1 39D Monitoring Well MW-14 Monitoring Well MW-140D Monitoring Well A-2

TABLE A-1: Radiological Groundwater Protection Program - Sampling Locations, Braidwood Station, 2007 Station Code Sample Description MW-141D Monitoring Well MW-142D Monitoring Well MW-143D Monitoring Well MW-144D Monitoring Well MW-145D Monitoring Well MW-148D Monitoring Well MW-149D Monitoring Well MW-150D Monitoring Well MW-151D Monitoring Well MW-154 Monitoring Well MW-155 Monitoring Well MW-156 Monitoring Well MW-157D Monitoring Well MW-158D Monitoring Well MW-159D Monitoring Well MW-160D Monitoring Well MW-161D Monitoring Well MW-162D Monitoring Well MW-2 Monitoring Well MW-22 Monitoring Well MW-4 Monitoring Well MW-5 Monitoring Well MW-6 Monitoring Well MW-7 Monitoring Well MW-9 Monitoring Well MW-BW-201 BD Monitoring Well MW-BW-2011 Monitoring Well MW-BW-201 S Monitoring Well

'MW-BW-2021 Distant Well MW-BW-202S Distant Well MW-BW-2031 Distant Well MW-BW-203S Distant Well MW-BW-2041 Distant Well MW-BW-2051 Distant Well MW-BW-2061 Distant Well MW-BE-2071 Distant Well MW-BW-208BD Distant Well P-1 Monitoring Well P-10 Monitoring Well P-11 Monitoring Well P-13D Monitoring Well P-14 Monitoring Well P-14D Monitoring Well P-2 Monitoring Well P-2D Monitoring Well P-3 Monitoring Well P-4 Monitoring Well P-4D Monitoring Well P-5 Monitoring Well P-5D Monitoring Well P-6 Monitoring Well P-9 Monitoring Well PW-001 Monitoring Well PW-002 Monitoring Well PW-003 Monitoring Well PW-006 Monitoring Well PW-006A Monitoring Well PW-006B Monitoring Well PW-006P Surface Water PW-8 Monitoring Well PW-011 Monitoring Well PW-014 Monitoring Well PW-015 Monitoring Well A-3

TABLE A-1: Radiological Groundwater Protection Program - Sampling Locations, Braidwood Station, 2007 Station Code Sample Description PW-015 P1 Surface Water Pw-015 P2 Surface Water PW-016 Monitoring Well PW-13P Surface Water PW-601 POND Surface Water RW-5 Monitoring Well RW-6 Monitoring Well RW-7 Monitoring Well RW-8 Monitoring Well S-1 Monitoring Well S-1D Monitoring Well S-2 Monitoring Well S-2D Monitoring Well S-3 Monitoring Well S-4 Monitoring Well S-4D Monitoring Well S-5 Monitoring Well S-6 Monitoring Well S-7 Monitoring Well S-7D Monitoring Well S-8 Monitoring Well S-8DR Monitoring Well SC-ID Monitoring Well SC-2D Monitoring Well SG-BW-105 Surface Water SW-101 Surface Water SW-102 "C"DITCH Surface Water SW-103 Surface Water SW-104 "A" DITCH Surface Water TB-20 Monitoring Well TB-20D Monitoring Well TB-21 Monitoring Well TB-21D Monitoring Well TB-22 Monitoring Well TB-22D Monitoring Well TB-23 Monitoring Well TB-23D Monitoring Well TB-24 Monitoring Well TB-24D Monitoring Well TB-25 Monitoring Well TB-25D Monitoring Well TB-26D Monitoring Well VBI-1 Monitoring Well VBI-10D Monitoring Well VB11-1 Monitoring Well VBI-11D Monitoring Well VB1-12D Monitoring Well VB1-2 Monitoring Well VB1-2D Monitoring Well VB1-3D Monitoring Well VB1-4D Monitoring Well VB1-5 Monitoring Well VB1-5D Monitoring Well VB1-7D Monitoring Well VB1-8D Monitoring Well VB1-9D Monitoring Well VB2-1 Monitoring Well VB2-10 Monitoring Well V82-10D Monitoring Well VB2-11 Monitoring Well VB2-1ID Monitoring Well VB2-12 Monitoring Well VB2-12D Monitoring Well A-4

TABLE A-1: Radiological Groundwater Protection Program - Sampling Locations, Braidwood Station, 2007 Station Code Sample Description VB2-13 Monitoring Well VB2-13D Monitoring Well VB2-14 Monitoring Well VB2-14D Monitoring Well VB2-15D Monitoring Well VB2-16 Monitoring Well VB2-16D Monitoring Well VB2-17 Monitoring Well VB2-17D Monitoring Well VB2-2 Monitoring Well VB2-2D Monitoring Well VB2-3 Monitoring Well VB2-4 Monitoring Well VB2-5 Monitoring Well VB2-5D Monitoring Well VB2-6 Monitoring Well VB2-6D Monitoring Well VB2-7 Monitoring Well VB2-7D Monitoring Well VB2-8 Monitoring Well VB2-9 Monitoring Well VB2-9D Monitoring Well VB3-1 Monitoring Well VB3-10 Monitoring Well VB3-1OD Monitoring Well VB3-2 Monitoring Well VB3-3 Monitoring Well VB3-4 Monitoring Well VB3-4D Monitoring Well VB3-5 Monitoring Well VB3-6 Monitoring Well VB3-7 Monitoring Well VB3-7D Monitoring Well VB3-8 Monitoring Well VB3-9D Monitoring Well VB4-1 Monitoring Well VB4-5D Monitoring Well VB4-6D Monitoring Well VB5-2 Monitoring Well VB6-1 Monitoring Well VB7-1 Monitoring Well VB8-2 Monitoring Well VB9-1 Monitoring Well VB9-10 Monitoring Well VB9-5 Monitoring Well VB9-5D Monitoring Well VB9-6 Monitoring Well VB9-6D Monitoring Well VB9-7 Monitoring Well VB9-7D Monitoring Well VB9-8 Monitoring Well VB9-8D Monitoring Well VB9-9 Monitoring Well WCFP-1D Monitoring Well WCFP-2DR Monitoring Well A-5

Intentionally left blank APPENDIX B DATA TABLES

TABLE B-1.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED INTHE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 A-1 02/23/07 < 190 A-i1D 02/23/07 309 + 110 BL-03 01/08/07 < 174 BL-03 02/13/07 < 191 BL-03 03/12/07 < 168 BL-03 ORIGINAL 04/12/07 < 182 BL-03 DUPLICATE 04/12/07 < 182 BL-03 05/14/07 < 141 BL-03 06/11/07 < 145 BL-03 07/09/07 < 144 BL-03 08/13/07 < 197 BL-03 ORIGINAL 09/12/07 < 160 BL-03 DUPLICATE 09/12/07 < 160 BL-03 10/18/07 < 195 BL-03 11/14/07 < 194 BL-03 12/13/07 < 179 BL-05 ORIGINAL 08/14/07 < 158 BL-05 DUPLICATE 08/14/07 < 158 BL-06 01/09/07 645 +/- 125 BL-06 03/13/07 699 +/- 116 BL-06 04/12/07 443 +/- 106 BL-06 05/17/07 685 +/- 110 BL-06 06/13/07 804 +/- 114 BL-06 07/09/07 652 +/- 103 BL-06 08/13/07 1183 +/- 142 BL-06 09/12/07 1222 +/- 139 BL-06 11/14/07 3620 +/- 376 BL-06 12/11/07 4380 +/- 511 BL-06D 10/02/07 8786 +/- 274 BL-06D 12/11/07 6670 +/- 735 BL-07 01/09/07 < 174 BL-07 08/13/07 322 +/- 115 BL-07 09/13/07 < 175 BL-07 ORIGINAL 09/13/07 < 175 BL-07 DUPLICATE 09/13/07 < 175 BL-08 01/10/07 314 +/- 107 BL-08 08/13/07 334 +/- 116 BL-08 09/13/07 < 189 BL-09 01/10/07 7552 +/- 253 BL-09 09/13/07 693 +/- 117 BL-09D 01/10/07 4296 +/- 203 BL-09D 09/13/07 3101 +/- 175 BL-10 01/10/07 < 175 BL-10D 01/10/07 < 175 BL-10D 09/14/07 < 190 BL-1 1 01/08/07 < 174 BL-11 02/13/07 < 191 BL-11 03/12/07

  • 176 B-i

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 BL-11 04/12/07 < 182 BL-11 05/15/07 < 172 BL-1 1 06/11/07 < 178 BL-11 07/09/07

  • 180 BL-11 08/14/07 220 + 112 BL-11 09/12/07
  • 193 BL-11 10/18/07 < 192 BL-11 11/14/07
  • 194 BL-11 12/11/07
  • 183 BL-11D 01/10/07 < 175 BL-11D 09/18/07 < 190 BL-12 01/10/07 < 175 BL-12D 01/10/07 < 175 BL-12D 09/20/07 < 190 BL-13 01/10/07 < 175 BL-13D 01/10/07 < 175 BL-13D 09/18/07 < 190 BL-14 01/10/07 < 151 BL-14D 01/10/07 < 151 BL-14D 09/18/07 < 190 BL-15 01/11/07 416 +/- 91 BL-15D 01/11/07
  • 146 BL-15D 09/19/07 < 190 BL-16 01/11/07 272 +/- 85 BL-16D 01/11/07
  • 146 BL-16D 09/19/07 < 190 BL-17 01/17/07 < 152 BL-17D 01/17/07 < 152 BL-17D 09/18/07 < 190 BL-18 01/17/07 < 152 BL-18D ORIGINAL 01/17/07 188 +/- 84 BL-18D DUPLICATE 01/17/07 287 +/- 89 BL-18D 09/19/07 < 190 BL-19D 01/17/07 < 143 BL-19D 09/19/07 < 190 BL-19R 01/08/07
  • 174 BL-19R 02/15/07 < 191 BL-19R 03/13/07 < 187 BL-19R 04/11/07
  • 182 BL-19R 05/15/07 < 172 BL-19R 06/14/07 < 174 BL-19R ORIGINAL 07/09/07 < 180 BL-19R DUPLICATE 07/09/07 < 180 BL-19R 08/14/07 < 197 BL-19R 09/12/07 202 + 109 BL-19R 09/26/07 < 188 BL-19R 09/26/07 < 187 BL-19R 10/18/07
  • 196 B-2

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/-2 SIGMA COLLECTION SITE DATE H-3 BL-19R 11/14/07 < 188 BL-19R 12/13/07 < 175 BL-20D 01/10/07 < 175 BL-20D 09/26/07 < 188 BL-20D 09/26/07 < 188 BL-21 01/09/07 < 172 BL-21 02/15/07 < 191 BL-21 03/13/07 < 187 BL-21 04/13/07 < 182 BL-21 05/14/07 < 169 BL-21 06/12/07 < 178 BL-21 07/10/07 < 180 BL-21 08/15/07 < 152 BL-21 09/12/07 194 + 109 BL-21 10/18/07 < 189 BL-21 11/14/07 < 189 BL-21 12/14/07 < 195 BL-22 05/16/07 < 174 BL-22 01/09/07 < 179 BL-22 02/14/07 < 191 BL-22 03/14/07 < 173 BL-22 04/11/07 < 147 BL-22 06/12/07 < 178 BL-22 07/10/07 < 180 BL-22 08/15/07 < 152 BL-22 09/12/07 342 + 114 BL-22 09/26/07 < 188 BL-22 09/26/07 < 186 BL-22 10/18/07 < 190 BL-22 11/14/07 < 192 BL-22 12/13/07 < 190 BL-23 01/09/07 < 174 BL-23 02/14/07 < 169 BL-23 03/15/07 < 173 BL-23 04/13/07 < 182 BL-23 05/15/07 < 172 BL-23 06/12/07 < 178 BL-23 07/10/07 < 180 BL-23 08/14/07 < 152 BL-23 09/12/07 < 160 BL-23 10/17/07 < 189 BL-23 11/14/07 < 191 BL-23 12/13/07 < 195 BL-24 01/09/07 < 174 BL-24 02/14/07 < 169 BL-24 03/12/07 < 187 BL-24 04/11/07 < 147 BL-24 05/16/07 < 174 B-3

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 BL-24 06/12/07 < 178 KL-24 ORIGINAL 06/12/07 < 178 BL-24 DUPLICATE 06/12/07 < 178 BL-24 07/10/07 < 180 BL-24 08/14/07 < 152 BL-24 09/12/07 269 + 112 BL-24 09/26/07 < 188 BL-24 09/26/07

  • 191 BL-24 10/17/07 < 186 BL-24 11/14/07 < 191 BL-24 12/13/07 < 190 8L-25 01/09/07 < 174 E3L-25 02/13/07 < 144 BL-25 03/15/07 < 173 I3L-25 04/09/07 < 147 BL-25 05/16/07 < 174 BL-25 06/12/07 < 178 BL-25 07/10/07 < 180 BL-25 08/14/07 < 152 BL-25 09/12/07 222 + 110 BL-25 ORIGINAL 09/26/07 < 188 BL-25 DUPLICATE 09/26/07 < 188 BL-25 09/26/07 < 187 BL-25 10/17/07 < 183 BL-25 11/13/07 < 197 BL-25 12/13/07 < 184 BL-26 01/08/07 < 174 BL-26 02/13/07 < 144 BL-26 03/15/07 < 173 E3L-26 04/09/07 < 147 BL-26 05/14/07 < 141 8L-26 06/11/07
  • 145 BL-26 07/09/07 < 144 BL-26 08/13/07 < 152 8L-26 09/10/07 < 182 BL-26 11/13/07 < 193 BL-26 12/11/07 < 192 BL-27 01/09/07 < 179 BL-27 02/12/07 < 144 BL-27 03/12/07 < 187 BL-27 04/09/07 < 147 BL-27 05/15/07
  • 172 BL-27 06/12/07 < 178 BL-27 07/10/07 < 180 BL-27 08/14/07 < 152 BL-27 09/10/07 < 182 BL-27 11/13/07 < 196 BL-27 12/11/07 < 173 B]-4

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 BL-28 01/17/07 < 143 C-1 01/12/07 < 143 C-1 08/16/07 241 +/- 102 C-ID 01/12/07 < 143 C-ID ORIGINAL 08/16/07 216 +/- 101 C-ID DUPLICATE 08/16/07 268 +/- 103 C-1D 09/18/07 < 190 C-2 01/12/07 < 143 C-2 08/16/07 261 +/- 103 C-2D 01/12/07 < 143 C-2D 08/16/07 336 +/- 105 C-2D 09/18/07 < 192 CB-1 04/16/07 < 186 CB-1D 04/16/07 < 171 CB-2 04/16/07 < 171 CB-2D 04/16/07 < 171 CB-3 04/16/07 < 180 CB-3D 04/16/07

  • 180 CB-4 04/16/07 < 186 CB-4D 04/16/07 < 180 CD-1 01/16/07 1363 +/- 123 CD-1D 01/16/07 < 146 CD-1D 09/18/07 < 189 D-1 D 09/26/07 < 189 D-2D 09/18/07
  • 189 D-2D ORIGINAL 09/18/07 < 189 D-2D DUPLICATE 09/18/07 < 189 D-3D 09/18/07 1829 +/- 147 DN-1 02/15/07 < 191 DN-1 03/12/07 < 187 DN-1 08/15/07 174 +/- 84 DN-1 09/20/07 272 +/- 120 DN-iD 02/15/07 < 191 DN-iD 03/12/07 < 187 DN-1D 08/15/07
  • 152 DN-1D 09/20/07 < 182 DN-2 02/15/07 < 191 DN-2 03/12/07 < 187 DN-2 08/15/07 272 +/- 88 DN-2 09/20/07 450 +/- 124 DN-2D 02/15/07 < 191 DN-2D 03/12/07 < 187 DN-2D 08/15/07 < 152 DN-2D 09/20/07 < 182 DN-3 ORIGINAL 02/15/07 196 +/- 107 DN-3 DUPLICATE 02/15/07 < 191 DN-3 03/12/07
  • 187 DN-3 08/15/07 248 +/- 87 B-5

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED INTHE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 DN-3 09/20/07 187 +/- 117 DN-3D 02/15/07 < 191 DN-3D 03/12/07 < 187 DN-3D 08/15/07 < 152 DN-3D 09/20/07 < 178 F-1 01/09/07 < 179 F-iD 01/09/07 < 179 F-1D 09/13/07 < 192 F-3D 01/10/07 1415 +/- 145 F-3D 09/13/07 1248 +/- 149 F-4D 01/09/07 < 179 F-4D 09/13/07 < 189 F-5D 01/10/07 1623 +/- 150 F-5D 06/13/07 1098 +/- 123 F-5D 09/11/07 1291 +/- 133 F-5D 12/12/07 896 +/- 173 F-6D ORIGINAL 01/09/07 693 +/- 120 F-6D DUPLICATE 01/09/07 805 +/- 124 F-6D 03/14/07 588 +/- 109 F-6D 04/12/07 622 +/- 112 F-6D 05/17/07 707 + 111 F-6D 06/13/07 689 +/- 111 F-6D ORIGINAL 06/13/07 689 +/- 111 F-6D DUPLICATE 06/13/07 696 + 111 F-6D 07/10/07 707 +/- 117 F-6D 08/14/07 662 + 104 F-6D 09/13/07 591 +/- 114 F-6D 10/17/07 701 + 148 F-6D 11/14/07 491 +/- 141 F-6D 12/11/07 369 +/- 127 F-7D 01/12/07 992 +/- 111 F-7D 09/13/07 961 +/- 125 F-8D ORIGINAL 01/10/07 716 +/- 127 F-8D DUPLICATE 01/10/07 618 +/- 125 F-8D 09/13/07 < 189 F-9D 11/27/07 1040 +/- 143 F-9D 12/13/07 1520 +/- 226 G1 02/12/07 < 141 G2 02/12/07 < 141 G2D 02/12/07 < 141 G3 02/12/07 < 141 G-4S 05/16/07 < 174 G-5S 05/16/07 < 174 G-6S 05/16/07 < 174 G-7S 05/16/07 < 174 MW-1l0 01/10/07 < 175 MW-102R 01/08/07 < 174 MW-102R 02/13/07 < 191 B-6

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 MW-102R 03/12/07 < 176 MW-102R 04/12/07 < 182 MW-102R 05/14/07 < 141 MW-102R 06/11/07 < 145 MW-102R 07/09/07 < 180 MW-102R 08/13/07 214 +/- 111 MW-102R 09/12/07 249 +/- 111 MW-102R 09/26/07 < 189 MW-102R 09/26/07 < 188 MW-102R 10/18/07 < 193 MW-102R 11/14/07 < 196 MW-102R 12/11/07 < 181 MW-103 01/16/07 836 + 106 MW-103 06/14/07 < 145 MW-103 09/13/07 < 175 MW-104 01/15/07 < 152 MW-105 01/11/07 < 146 MW-105 06/13/07 < 178 MW-105 09/11/07 < 160 MW-105 12/12/07 < 170 MW-105D 01/11/07 < 146 MW-105D 09/19/07 < 190 MW-106D 09/18/07 < 190 MW-107 09/25/07 < 189 MW-109D 03/12/07 257 + 111 MW-109D 07/26/07 906 + 109 MW-109D 09/14/07 516 + 107 MW-109D 12/12/07 < 190 MW-i1 06/15/07 < 188 MW-i1 11/06/07 < 193 MW-l11 06/13/07 < 174 MW-l11 09/11/07 < 182 MW-l11 12/12/07 < 173 MW-111DR 03/12/07 < 168 MW-111 DR 06/11/07 < 145 MW-111 DR 09/11/07 < 180 MW-111 DR 12/12/07 < 171 MW-112D 03/12/07 < 176 MW-112D 06/13/07 < 178 MW-112D 09/11/07 .< 182 MW-112D 12/12/07 < 172 MW-113 01/12/07 3220 +/- 170 MW-113 06/14/07 3142 +/- 171 MW-113 09/13/07 4174 +/- 200 MW-113 12/13/07 3260 +/- 397 MW-113DR 01/12/07 225 +/- 83 MW-113DR 01/12/07 2270 +/- 148 MW-113DR 06/14/07 719 +/- 103 B-'7

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED INTHE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 MW-113DR 09/11/07 1139 +/- 128 MW-113DR 12/12/07 294 +/- 111 MW-13 01/11/07 2747 +/- 164 MW-13 01/29/07 2464 +/- 154 MW-13 02/14/07 3599 +/- 191 MW-13 03/14/07 9244 +/- 280 MW-13 04/12/07 604 +/- Ill MW-13 05/14/07 2506 +/- 158 MW-13 06/18/07 10200 +/- 1070 MW-13 07/25/07 4910 +/- 220 MW-13 08/15/07 5163 +/- 228 MW-13 09/11/07 1283 +/- 141 MW-13 10/07/07 2620 +/- 332 MW-13 11/06/07 5140 +/- 586 MW-13 12/27/07 1730 +/- 243 MW-130D 03/12/07 < 168 MW-130D 06/21/07 526 +/- 110 MW-130D 09/14/07 < 175 MW-130D 12/12/07 423 +/- 138 MW-131D 03/12/07 413 +/- 116 MW-131D 06/11/07

  • 145 MW-131D 09/11/07
  • 180 MW-131D 12/12/07 < 173 MW-132D 03/12/07 < 168 MW-132D 06/11/07 < 145 MW-132D 09/11/07 < 180 MW-132D 12/12/07 < 175 MW-133D 01/15/07
  • 152 MW-133D 01/15/07 451 +/- 93 MW-133D 06/11/07 < 178 MW-133D 09/11/07
  • 182 MW-133D 12/12/07 < 186 MW-134D 06/11/07 222 +/- 98 MW-134D 09/11/07 232 +/- 95 MW-134D 09/26/07 < 188 MW-134D 09/26/07 192 +/- 106 MW-134D 12/12/07 258 +/- 122 MW-135D 01/16/07 78123 +/- 757 MW-135D 06/14/07 19605 +/- 379 MW-135D ORIGINAL 09/11/07 16273 +/- 376 MW-135D DUPLICATE 09/11/07 15937 +/- 372 MW-135D 12/12/07 5100 +/- 580 MW-136D 01/15/07 < 151 MW-136D 06/14/07 < 174 MW-136D 09/11/07 < 160 MW-136D 12/12/07 < 188 MW-137D 01/12/07 1975 +/- 137 MW-1 37D 06/14/07 438 +/- 103 B-8

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 MW-1 37D 09/11/07 364 +/- 100 H-3 MW-137D 12/12/07 < 185 MW-138D 01/15/07 938 +/- 110 MW-138D 06/25/07 < 145 MW-138D 09/11/07 < 160 MW-138D 12/12/07 < 189 MW-139D 01/10/07 276 +/- 115 MW-139D 06/13/07 < 174 MW-139D 09/11/07 < 160 MW-139D 12/12/07 < 186 MW-14 06/14/07 < 191 MW-14 12/27/07 < 179 MW-140D 01/10/07 4734 +/- 210 MW-140D 06/13/07 2684 +/- 173 MW-140D 09/11/07 801 +/- 122 MW-140D 12/12/07 3230 +/- 396 MW-141D 06/12/07 305 +/- 120 MW-141D 09/12/07 < 175 MW-141D 11/09/07 255 +/- 122 MW-142D 06/20/07 502 +/- 129 MW-142D 09/12/07 678 +/- 113 MW-142D 11/09/07 881 +/- 168 MW-143D 06/12/07 259 +/- 118 MW-143D 09/12/07 268 +/- 98 MW-143D 11/07/07 680 +/- 158 MW-144D 06/12/07 322 +/- 119 MW-144D 10/08/07 456 +/- 136 MW-144D 11/09/07 600 +/- 142 MW-145D 03/13/07 10319 +/- 285 MW-145D 06/14/07 < 174 MW-145D 09/11/07 8440 +/- 277 MW-145D 12/12/07 7560 +/- 821 MW-148D 03/15/07 < 173 MW-148D 06/12/07 < 178 MW-148D 09/13/07

  • 175 MW-148D 12/13/07 < 196 MW-149D 03/15/07 270 +/- 97 MW-149D 06/11/07 < 145 MW-149D 09/13/07 < 175 MW-149D 12/13/07 < 187 MW-1 50D 03/15/07 1352 +/- 133 MW-150D 06/11/07 403 +/- 91 MW-150D 09/13/07 290 +/- 99 MW-150D 12/13/07 < 190 MW-151D 03/15/07 4850 +/- 211 MW-151D 06/11/07 2873 +/- 165 MW-151D 09/13/07 2129 +/- 155 MW-151D 12/13/07 4010 +/- 474 B-9

TABLE B-1.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 MW-1 54 06/21/07 166 1i06 MW- 154 09/27/07 < 189 MW-1 54 11/14/07

  • 196 MW-155 06/21/07 < 163 MW-155 09/27/07 < 189 MW- 155 11/14/07 < 199 MW- 156 06/21/07 < 152 MW- 156 09/27/07 < 189 MW- 156 11/14/07
  • 197 MW-157D 03/15/07 12275 +/- 299 MW-157D 06/14/07 1519 +/- 134 MW-157D 09/11/07 15399 +/- 373 MW-157D 12/12/07 17000 +/- 1750 MW-158D 01/17/07 < 143 MW-158D 03/14/07 < 173 MW-158D 04/11/07 < 182 MW-158D 05/17/07 < 174 MW-158D 06/13/07 < 174 MW-158D 07/10/07 < 180 MW-158D 08/15/07 214 +/- 86 MW-158D 09/12/07 420 +/- 117 MW-158D 09/26/07 < 187 MW-158D 09/26/07 < 188 MW-158D 11/13/07 < 194 MW-158D 12/11/07 < 176 MW-159D 06/14/07
  • 150 MW-1 59D 09/12/07 < 175 MW-159D 11/13/07 < 196 MW-160D 06/14/07 < 150 MW-160D 09/12/07
  • 175 MW-160D 09/24/07 305 +/- 105 MW-160D 11/13/07
  • 196 MW-1 61D 12/27/07 334 +/- 122 MW-162D 09/24/07 335 +/- 106 MW-162D 12/27/07 419 +/- 128 MW-2 06/12/07 207 +/- 127 MW-2 11/08/07 333 +/- 128 MW-22 06/12/07 273 +/- 131 MW-22 11/07/07 276 +/- 127 MW-4 06/13/07 715 +/- 140 MW-4 12/27/07 479 +/- 123 MW-5 06/20/07 584 +/- 146 MW-5 11/08/07 497 +/- 134 MW-6 06/13/07 1440 +/- 208 MW-6 11/07/07 1080 +/- 195 MW-7 06/12/07 720 +/- 141 MW-7 11/07/07 569 +/- 149 MW-9 06/11/07 < 187 B- 10

TABLE B-1.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 MW-9 11/07/07 < 194 MW-BW-201 BD 06/18/07 < 161 MW-BW-201BD 11/27/07 < 197 MW-BW-201 I 06/14/07 < 164 MW-BW-2011 11/27/07 < 196 MW-BW-201 S 06/14/07 177 +/- 111 MW-BW-201 S 11/26/07 < 180 MW-BW-201 S 11/27/07 240 +/- 122 MW-BW-2021 06/11/07 219 +/- 116 MW-BW-2021 11/13/07 < 195 MW-BW-202S 06/11/07 189 +/- 112 MW-BW-202S 11/13/07 < 193 MW-BW-2031 06/11/07 < 162 MW-BW-2031 11/13/07 < 199 MW-BW-203S 06/11/07 287 +/- 118 MW-BW-203S 11/13/07 < 193 MW-BW-2041 06/19/07 223 +/- 115 MW-BW-2041 11/27/07 < 191 MW-BW-2051 06/19/07 248 +/- 117 MW-BW-2051 11/14/07 < 194 MW-BW-2061 06/19/07 < 165 MW-BW-2061 11/27/07 < 192 MW-BW-2071 06/18/07 1070 +/- 159 MW-BW-2071 11/09/07 815 +/- 161 MW-BW-208BD 06/18/07 < 162 MW-BW-208BD 11/09/07 < 189 P-1 01/15/07 < 147 P-10 01/16/07 < 147 P-11 01/17/07 1004 +/- 111 P-13D 01/16/07 29146 +/- 466 P-13D 08/14/07 5805 +/- 228 P-13D 09/13/07 5014 +/- 210 P-14 01/12/07 1635 +/- 129 P-14D 01/12/07 1983 +/- 137 P-14D 08/15/07 403 +/- 108 P-14D 09/13/07 < 190 P-2 01/15/07 1328 +/- 128 P-2D 01/15/07 2334 +/- 150 P-2D 08/14/07 2437 +/- 173 P-2D 09/13/07 1932 +/- 150 P-3 ORIGINAL 01/15/07 1255 +/- 120 P-3 DUPLICATE 01/15/07 1598 +/- 131 P-4 01/16/07 22641 +/- 412 P-4D 01/16/07 2658 +/- 157 P-4D 08/14/07 2623 +/- 177 P-4D 09/13/07 2764 +/- 168 P-5 01/16/07 6712 +/- 234 P-5D 01/15/07 287 +/- 86 B-11

TABLE B-1.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 P-5D 08/14/07 283 + 114 P-5D 09/13/07

  • 190 P-6 01/17/07
  • 143 P-9 01/16/07
  • 147 PW-001 07/12/07
  • 141 PW-002 04/03/07
  • 137 PW-002 07/12/07
  • 141 PW-003 04/03/07
  • 137 PW-003 07/12/07
  • 141 PW-006 05/15/07
  • 172 PW-006 07/12/07
  • 141 PW-006 10/15/07
  • 192 PW-006A 05/15/07
  • 172 PW-006A 07/12/07
  • 141 PW-006A 10/15/07
  • 193 PW-006B 05/15/07
  • 172 PW-006B 07/12/07
  • 141 PW-8 01/12/07 1320 +/- 120 PW-011 04/03/07
  • 155 PW-011 07/12/07
  • 141 PW-014 01/16/07
  • 146 PW-014 04/03/07 < 137 PW-014 04/03/07
  • 169 PW-014 07/12/07
  • 141 PW-015 04/27/07
  • 151 PW-015 07/12/07
  • 141 PW-016 04/03/07
  • 137 PW-016 07/12/07
  • 141 RW-5 09/14/07 1313 +/- 133 RW-5 12/21/07 1030 +/- 178 RW-6 ORIGINAL 09/14/07 4437 +/- 205 RW-6 DUPLICATE 09/14/07 4912 +/- 214 RW-7 09/14/07 526 +/- 108 RW-7 12/21/07 388 +/- 128 RW-8 08/27/07 998 +/- 128 RW-8 11/08/07 699 +/- 154 S-1 01/10/07
  • 172 S-AD 01/10/07 1649 +/- 150 S-AD 03/14/07 1516 +/- 138 S-AD 04/11/07 1222 +/- 129 S-AD 05/17/07 1251 +/- 127 S-1 D 06/13/07 1204 +/- 126 S-1 D 07/10/07 1095 +/- 130 S-1 D 08/15/07 1343 +/- 137 S-1D 09/13/07 1097 +/- 146 S-1D 10/17/07 1060 +/- 148 S-1 D 11/13/07 945 +/- 172 S-1D 12/11/07 915 +/- 174 B - 12

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED INTHE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 S-2 01/10/07 < 172 S-2D 01/10/07 295 +/- 114 S-2D 09/13/07 291 +/- 112 S-3 01/12/07 < 143 S-4 01/12/07 1423 +/- 123 S-4D 01/10/07 1623 +/- 149 S-4D 09/13/07 770 +/- 128 S-5 01/10/07 1473 +/- 145 S-6 01/10/07 < 172 S-7 01/10/07 1356 +/- 143 S-7D 01/10/07 1663 +/- 150 S-7D 03/13/07 1482 +/- 138 S-7D 04/11/07 1300 +/- 131 S-7D 05/17/07 1173 +/- 125 S-7D 06/13/07 1192 +/- 126 S-7D 07/10/07 1106 +/- 131 S-7D 08/15/07 487 +/- 98 S-7D 09/13/07 744 +/- 127 S-7D 10/17/07 < 200 S-7D 11/13/07 < 189 S-7D 12/11/07 < 187 S-8 01/15/07 < 151 S-8 02/15/07 < 146 S-8 04/11/07 < 182 S-8DR 01/15/07 416 +/- 97 S-8DR 02/15/07 294 +/- 90 S-8DR 03/13/07 275 +/- 102 S-8DR 05/16/07 < 174 S-8DR ORIGINAL 05/16/07 < 174 S-8DR DUPLICATE 05/16/07 186 +/- 93 S-8DR 06/13/07 183 +/- 93 S-8DR 07/10/07 259 +/- 100 S-8DR 08/15/07 216 +/- 86 S-8DR 09/13/07 371 +/- 115 S-8DR 09/26/07 < 191 S-8DR 09/26/07 216 +/- 106 S-8DR 11/13/07 < 192 S-8DR 12/11/07 < 189 SC-1 D 09/11/07 < 160 SC-1 D 10/15/07

  • 192 SC-2D 09/11/07 < 160 SC-2D 10/15/07 < 193 TB-20 05/08/07 < 175 TB-20 06/13/07
  • 178 TB-20 07/25/07
  • 141 TB-20 08/14/07 295 +/- 104 TB-20 09/10/07 231 +/- 104 TB-20 10/09/07 < 186 B -13

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED INTHE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 TB-20 11/05/07 < 189 TB-20 12/21/07 < 159 TB-20D 05/08/07 < 175 TB-20D 06/13/07 < 178 TB-20D 07/25/07 215 +/- 84 TB-20D 08/14/07 536 +/- 112 TB-20D 09/10/07 1176 +/- 137 TB-20D 10/09/07 809 +/- 161 TB-20D 11/05/07 574 +/- 149 TB-20D 12/26/07 223 +/- 105 TB-21 05/08/07 < 175 TB-21 06/15/07 232 +/- 98 TB-21 07/25/07 197 +/- 83 TB-21 08/14/07 470 +/- 110 TB-21 09/10/07 307 +/- 107 TB-21 10/10/07 220 +/- 126 TB-21 11/05/07 210 +/- 125 TB-21 12/27/07 < 158 TB-21D 05/08/07 < 172 TB-21D 06/20/07 437 +/- 106 TB-21D 07/25/07 241 +/- 85 TB-21 D 08/15/07 555 +/- 113 TB-21D ORIGINAL 09/10/07 576 +/- 117 TB-21D DUPLICATE 09/10/07 597 +/- 118 TB-21D 10/10/07 < 195 TB-21D 11/05/07 194 +/- 124 TB-21 D 12/26/07 < 154 TB-22 05/09/07 < 175 TB-22 06/20/07 < 177 TB-22 07/25/07 < 179 TB-22 08/15/07 407 +/- 108 TB-22 09/10/07 337 +/- 108 TB-22 10/10/07 < 186 TB-22 11/05/07 213 +/- 126 TB-22 12/26/07 < 160 TB-22D 05/09/07 < 175 TB-22D 06/20/07 < 177 TB-22D 07/25/07 < 179 TB-22D 08/15/07 324 +/- 105 TB-22D 09/11/07 326 +/- 108 TB-22D 10/10/07 < 194 TB-22D 11/06/07 < 191 TB-22D 12/26/07 < 156 TB-23 05/09/07 < 175 TB-23 06/15/07 < 177 TB-23 07/25/07 < 179 TB-23 08/15/07 < 180 TB-23 09/11/07 < 180 B- 14

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 10/08/07 TB-23

  • 189 TB-23 11/06/07
  • 189 TB-23 12/26/07
  • 158 TB-23D 05/09/07
  • 175 TB-23D 06/14/07
  • 177 TB-23D ORIGINAL 07/25/07
  • 179 TB-23D DUPLICATE 07/25/07 194 +/- 97 TB-23D 08/15/07
  • 180 TB-23D 09/11/07 210 +/- 103 TB-23D 10/08/07
  • 192 TB-23D 11/06/07
  • 189 TB-23D 12/26/07
  • 161 TB-24 05/10/07
  • 175 TB-24D 05/10/07
  • 175 TB-25 05/10/07
  • 175 TB-25D 05/10/07
  • 141 TB-26D 09/12/07
  • 160 VB10-1 01/09/07
  • 174 VB10-1 ORIGINAL 02/13/07
  • 144 VB10-1 DUPLICATE 02/13/07
  • 144 VB10-1 03/14/07
  • 173 VB10-1 04/09/07
  • 147 V810-1 05/14/07
  • 172 VB10-1 06/11/07
  • 145 V810-1 ORIGINAL 06/11/07
  • 145 VB10-1 DUPLICATE 06/11/07
  • 145 VB10-1 07/09/07
  • 144 VB10-1 08/13/07 < 152 VB10-1 09/10/07
  • 182 VB10-1 11/13/07
  • 196 VB10-1 12/11/07
  • 179 VB1-1 01/09/07
  • 172 VB1-1 02/15/07
  • 191 VB1-1 03/14/07
  • 173 VB1-1 04/12/07
  • 182 VB1-1 05/14/07
  • 174 VBI-1 06/21/07
  • 177 VB1-1 07/27/07
  • 146 VB1-1 08/15/07 230 + 101.

VBI-1 09/14/07

  • 175 VB1-1 10/09/07
  • 190 V81-1 11/21/07
  • 195 VBI-1 12/12/07 < 189 VB1-10D 09/26/07 < 189 V811-1 01/09/07 189 + 111 V811-1 02/12/07 195 + 85 V811-1 04/09/07 < 147 VB11-1 05/15/07 < 153 B- 15

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 VB11-1 06/12/07

  • 178 VB1!-1 09/11/07 < 182 VB11-1 10/16/07 < 178 VB11-1 11/13/07 < 197 VB11-1 03/12/07 < 187 VB11-1 07/10/07 < 180 VB11-1 08/14/07 170 +/- 84 VB11-1 12/11/07 < 171 VB1-11D 09/26/07 < 189 VB1-12D 11/27/07 < 191 VB1-12D 12/13/07 < 186 VB1-2 09/25/07 < 189 VB1-2D 09/25/07 < 189 VB1-2D 09/25/07 < 193 VB1-2D 09/25/07 < 189 VB1-2D ORIGINAL 09/25/07 214 +/- 101 VB1-2D DUPLICATE 09/25/07 < 193 VB1 -3D 09/26/07 4018 + 192 VB1 -4D 09/13/07 416 +/- 108 VB1-4D 09/26/07 310 + 105 VB1-5 09/24/07 < 189 VB13-5D 09/24/07 1282 + 133 VB1-7D 09/14/07 < 189 VB1-8D 09/14/07 < 189 VB1-9D 09/13/07 6744 +/- 245 VB1-9D 09/24/07 7401 +/- 246 VB1-9D 10/09/07 7260 +/- 791 VB1-9D 12/21/07 5160 +/- 577 VB2-1 01/15/07 < 152 VB2-10 05/15/07 < 172 VB2-10 06/14/07 < 145 VB2-10 ORIGINAL 07/11/07 < 141 VB2-10 DUPLICATE 07/11/07 < 141 VB2-10 08/15/07 201 +/- 100 VB2-10 09/10/07
  • 180 VB2-10 11/13/07 < 196 VB2-10 12/10/07 < 188 VB2-10D 05/15/07 < 172 VB2-10D 06/14/07 < 145 VB2-10D 07/11/07 < 141 VB2-10D 08/15/07 188 +/- 100 VB2-10D 09/10/07 < 180 VB2-10D 11/13/07 < 187 VB2-10D 12/10/07 < 185 VB2-11 05/11/07 < 141 VB2-11 06/14/07 < 174 VB2-11 07/10/07 < 180 VB2-11 08/15/07 238 +/- 102 B - 16

TABLE B-1.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 VB2-11 09/10/07 < 180 VB2-11 11/13/07 < 188 V12-11 12/11/07

  • 179 VB2-11D 05/11/07 < 169 VB2-1 1D 06/14/07 < 145 VB2-1 1D 07/10/07 < 180 VB2-1 1D 08/15/07 332 + 105 VB2-1 1D 09/10/07
  • 180 V12-1 1D 11/13/07 < 194 VB2-1 1D 12/11/07 < 182 VB2-12 06/14/07 < 145 VB2-12 07/10/07 < 180 VB2-12 08/15/07 < 186 VB2-12 09/12/07 < 180 VB2-12 11/13/07 < 189 VB2-12 05/15/07 < 172 VB2-12 12/10/07 < 178 VB2-12D 05/16/07 < 172 VB2-12D 06/14/07 < 145 VB2-12D 07/10/07 < 180 VB2-12D 08/15/07 230 +/- 101 V12-12D 09/12/07 < 180 VB2-12D 11/13/07 < 192 VB2-12D 12/10/07 < 181 V12-13 10/02/07 20754 +/- 409 VB2-13 10/18/07 22000 +/- 2250 V12-13 12/13/07 22800 +/- 2340 V12-13 PREPURGE 10/18/07 21900 +/- 2240 VB2-13D 10/02/07 2658 +/- 167 VB2-13D 10/18/07 2060 +/- 273 VB2-13D 12/13/07 4860 +/- 552 VB2-14 10/02/07 13188 +/- 330 VB2-14 12/13/07 11300 +/- 1200 VB2-14D 10/02/07 3388 +/- 183 VB2-14D 12/13/07 1970 +/- 274 VB2-15D 10/02/07 < 176 VB2-15D 10/17/07 < 194 VB2-15D 12/13/07 < 189 VB2-15D PREPURGE 10/17/07 < 190 VB2-16 11/27/07 229 +/- 121 VB2-16 12/14/07 < 183 VB2-16D 11/27/07 228 +/- 121 VB2-16D 12/14/07 429 +/- 131 V12-17 11/27/07 < 191 VB2-17 12/14/07 < 177 VB2-17D 11/27/07 521 +/- 127 VB2-17D 12/14/07 744 +/- 155 VB2-2 01/16/07 1463 +/- 132 B - 17

TABLE B-1.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED INTHE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 VB2-2D 01/16/07 2984 +/- 170 VB2-2D 09/19/07 3696 +/- 186 VB2-3 01/12/07 4820 +/- 202 VB2-4 01/16/07 8163 +/- 254 VB2-5 01/12/07 3486 +/- 176 VB2-5D 01/12/07 41255 +/- 556 VB2-5D 09/18/07 17357 +/- 378 VB2-6 01/15/07 1175 +/- 118 VB2-6D 01/15/07 464 +/- 93 VB2-6D 09/20/07

  • 175 VB2-7 01/15/07
  • 152 VB2-7D 01/15/07
  • 152 VB2-7D 09/19/07 < 190 VB2-8 01/16/07 < 146 VB2-9 ORIGINAL 01/15/07 < 147 VB2-9 DUPLICATE 01/15/07 < 147 VB2-9D 01/15/07 < 147 VB2-9D 09/20/07 < 190 VB3-1 01/12/07 477 +/- 94 VB3-10 01/12/07 361 +/- 89 VB3-10D 01/12/07 < 147 VB3-10D 09/19/07 < 190 VB3-2 02/15/07 7554 +/- 255 VB3-2 03/12/07 3689 +/- 186 VB3-2 04/12/07 2208 +/- 153 VB3-2 05/15/07 1785 +/- 149 VB3-2 06/13/07 1514 +/- 134 VB3-2 07/09/07 1384 +/- 139 VB3-2 08/14/07 1283 +/- 144 VB3-2 09/12/07 495 +/- 119 VB3-2 10/18/07 615 +/- 149 VB3-2 11/14/07 494 +/- 145 VB3-2 01/08/07 5785 +/- 226 VB3-2 12/11/07 228 +/- 124 VB3-3 01/12/07 4586 +/- 198 VB3-4 ORIGINAL 01/11/07 11466 +/- 298 VB3-4 DUPLICATE 01/11/07 11411 +/- 297 VB3-4D 01/11/07 709 +/- 102 VB3-4D 09/19/07 442 +/- 105 VB3-4D ORIGINAL 09/19/07 442 +/- 105 VB3-4D DUPLICATE 09/19/07 533 +/- 108 VB3-5 01/11/07 < 146 VB3-6 01/11/07 37239 +/- 526 VB3-7 01/16/07 < 146 VB3-7D 01/16/07 < 146 VB3-7D 09/20/07 < 190 VB3-8 01/16/07 < 146 VB3-9D 01/11/07 10789 +/- 289 B - 18

TABLE B-1.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 VB3-9D 09/19/07 < 190 VB4-1 01/09/07 < 172 VB4-1 02/15/07 < 191 VB4-1 03/13/07 < 187 VB4-1 04/11/07 < 182 VB4-1 05/14/07 < 141 V14-1 ORIGINAL 05/14/07 < 141 VB4-1 DUPLICATE 05/14/07 < 141 VB4-1 06/12/07 < 178 VB4-1 07/09/07 < 180 V14-1 ORIGINAL 08/15/07 170 +/- 84 VB4-1 DUPLICATE 08/15/07 < 152 VB4-1 09/12/07 208 +/- 109 VB4-1 10/18/07 < 194 VB4-1 11/14/07 < 190 VB4-1 12/13/07 < 178 VB4-5D 03/15/07 < 170 VB4-5D 06/14/07 < 174 VB4-5D 09/12/07 < 160 VB4-5D 12/12/07 < 168 VB4-6D 03/15/07 < 170 VB4-6D 06/14/07 677 +/- 110 VB4-6D 09/12/07 2787 +/- 179 VB4-6D 09/26/07 2187 +/- 158 VB4-6D 12/12/07 3060 +/- 379 VB4-6D 09/26/07 2310 +/- 304 VB5-2 01/09/07 < 179 VB5-2 02/15/07 < 190 VB5-2 03/13/07 < 187 VB5-2 ORIGINAL 03/13/07 < 187 VB5-2 DUPLICATE 03/13/07 < 187 VB5-2 04/13/07 < 182 VB5-2 05/14/07 < 141 VB5-2 06/12/07 < 178 VB5-2 07/10/07 < 180 VB5-2 08/15/07 < 152 VB5-2 09/12/07 196 + 109 VB5-2 10/18/07 < 188 VB5-2 11/14/07 < 191 VB5-2 12/14/07 < 195 VB6-1 01/09/07 < 174 VB6-1 02/14/07 < 169 VB6-1 03/15/07 < 173 VB6-1 ORIGINAL 03/15/07 < 173 VB6-1 DUPLICATE 03/15/07 < 173 VB6-1 04/11/07 < 147 VB6-1 05/15/07 < 172 VB6-1 06/11/07 < 145 B - 19

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 VB6-1 07/09/07 < 144 VB6-1 08/14/07 < 152 VB6-1 09/12/07 < 160 V16-1 10/17/07 < 200 VB6-1 11/13/07 < 196 VB6-1 12/13/07 < 195 VB7-1 01/09/07 1449 +/- 145 VB7-1 02/14/07 1604 +/- 144 VB7-1 03/14/07 1628 +/- 141 VB7-1 04/10/07 1321 +/- 124 VB7-1 05/16/07 704 +/- 111 VB7-1 06/11/07 732 +/- 104 VB7-1 07/10/07 882 +/- 123 VB7-1 08/14/07 1357 +/- 128 VB7-1 09/12/07 1085 +/- 127 VB7-1 10/17/07 1480 +/- 213 VB7-1 11/13/07 998 +/- 180 VB7-1 12/13/07 928 +/- 178 VB8-2 01/09/07 < 174 VB8-2 02/14/07 < 169 VB8-2 03/15/07 < 173 VB8-2 04/09/07 < 147 VB8-2 05/15/07 < 172 VB8-2 06/11/07 < 145 VB8-2 07/09/07 < 144 VB8-2 09/12/07 < 160 VB8-2 10/17/07 < 189 VB8-2 11/13/07 < 200 VB8-2 08/13/07 < 152 VB8-2 12/11/07 < 170 VB9-1 01/08/07 < 174 VB9-1 02/14/07 < 144 VB9-1 03/15/07 < 173 VB9-1 04/09/07 < 147 VB9-1 05/15/07 < 172 VB9-1 06/12/07 < 178 VB9-1 07/09/07 < 144 VB9-1 08/14/07 < 152 VB9-1 09/12/07 < 160 VB9-1 11/13/07 < 196 VB9-1 12/11/07 < 161 VB9-10 01/11/07 < 152 VB9-5 01/11/07 < 152 VB9-5D 01/11/07 < 152 V19-6 01/11/07 < 152 VB9-6D 01/11/07 < 152 VB9-7 01/11/07 160 + 83 VB9-7D 01/11/07 < 152 B -20

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 VB9-8 01/11/07

  • 152 VB9-8D 01/11/07 < 152 VB9-9 01/11/07
  • 152 WCFP-1D 03/15/07 < 173 WCFP-1D 06/13/07 < 178 WCFP-1 D 09/13/07 < 183 WCFP-1 D 12/14/07 690 1 159 WCFP-2DR 03/15/07 < 173 WCFP-2DR 06/13/07 < 178 WCFP-2DR 09/13/07 < 175 WCFP-2DR 12/14/07
  • 179 B -21

TABLE B-1.2 CONCENTRATIONS OF STRONTIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER 12 SIGMA COLLECTION SITE DATE SR-90 MW-14 12/27/07 < 0.9 MW-159D 11/13/07 < 1.5 MW-1 59D 06/14/07 < 0.7 MW-160D 06/14/07 < 0.7 MW-161D 12/27/07 < 0.8 MW-162D 12/27/07 < 1.4 MW-BW-201S 11/26/07 < 1.4 B - 22

TABLE B-II.1 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 DIAMOND LAKE 05/29/07 < 176 DITCH DS-2 09/14/07 < 175 DITCH DS-2 12/12/07 < 186 H DITCH 10/16/07 < 184 H DITCH 10/17/07 352 +/- 129 H DITCH 10/18/07 < 185 H DITCH 12/13/07 < 191 LAKE DISCHARGE CANAL 11/15/07 210 +/- 127 LAKE DISCHARGE CANAL 11/15/07 < 177 LAKE DISCHARGE CANAL 12/21/07 < 171 PW-006P 05/15/07 < 172 PW-006P ORIGINAL 05/15/07 < 172 PW-006P DUPLICATE 05/15/07 < 172 PW-006P 07/12/07 < 141 PW-006P 10/15/07

  • 194 PW-015 P1 ORIGINAL 10/17/07 228 +/- 125 PW-015 P1 RERUN 10/17/07 < 181 PW-015 P2 ORIGINAL 10/17/07 264 +/- 124 PW-015 P2 RERUN 10/17/07 < 174 PW-13P 10/18/07 < 191 PW-601 POND 04/16/07 < 186 SG-BW-105 11/05/07 < 194 SW-lol 06/21/07 339 +/- 134 SW-lol 11/08/07 < 192 SW-102 "C"DITCH 07/26/07 < 146 SW-103 11/08/07 188 +/- 122 SW-104 "A"DITCH 07/26/07 < 146 B - 23

TABLE B-I.3 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICNITY OF BRAIDWOOD STATION, 2007 RESULTS IN UNITS OF PCI/LITER +/-2 SIGMA STC COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 PERIOD BW-MW-159D 06/14/07 < 38 <33 <4 <4 <10 <4 < 10 <5 <8 < 22 <4 <4 <41 <13 BW-MW-160D 06/14/07 < 32 <64 <3 <4 <8 <3 <7 <4 <7 < 18 <3 <4 <35 <12 MW-14 12/27/07 < 51 <58 <4 <6 <12 <4 < 12 <7 <9 < 17 <6 <6 <39 <14 MW- 159D 11/13/07 < 27 <54 <2 <3 <7 <3 <5 <4 <6 < 31 <2 <3 <43 <15 MW-161D 12/27/07 < 40 71 +/-38 <4 <5 <11 <4 <9 <6 <8 < 11 <4 < 5 < 31 < 10 MW-162D 12/27/07 < 39 <88 <4 < 5 <8 < 5 <8 <5 <9 < 12 <4 <4 <24 <5 MW-BW-201 S 11/26/07 < 24 <39 <2 < 2 <6 < 2 <4 <2 <4 < 47 <2 <2 <46 <13

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