ML031410314

Annual Radiological Environmental Operating Report

ML031410314
Person / Time
Site:	LaSalle
Issue date:	05/15/2003
From:	Barnes G Exelon Generation Co, Exelon Nuclear
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML031410314 (169)

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Exekn.

Exelon Generation Company, LLC www.exeloncorp.com Nuclear LaSalle County Station 2601 North 21s'Road Marseilles, IL 61341-9757 May 15, 2003 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 LaSalle County Station, Units 1 and 2 Facility Operating License Nos. NPF-1 1 and NPF-1 8 NRC Docket Nos. 50-373 and 50-374

Subject:

2002 Annual Radiological Environmental Operating Report Enclosed is the 2002 Annual Radiological Environmental Operating Report for Exelon Generation Company (EGC), LLC, LaSalle County Station, submitted in accordance with Technical Specification 5.6.2, "Annual Radiological Environmental Operating Report." This report contains the results of the Radiological Environmental and Meteorological Monitoring Programs.

Should you have any questions concerning this letter, please contact Mr. Glen'Kaegi, Regulatory Assurance Manager, at (815) 415-2800.

Respecffully, George P. Barnes Site Vice President LaSalle County Station Attachment cc: Regional Administrator - NRC Region IlIl NRC Senior Resident Inspector - LaSalle County Station

May 15, 2003 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 LaSalle County Station, Units 1 and 2 Facility Operating License Nos. NPF-11 and NPF-18 NRC Docket Nos. 50-373 and 50-374

Subject:

2002 Annual Radiological Environmental Operating Report Enclosed is the 2002 Annual Radiological Environmental Operating Report for Exelon Generation Company (EGC), LLC, LaSalle County Station, submitted in accordance with Technical Specification 5.6.2, "Annual Radiological Environmental Operating Report." This report contains the results of the Radiological Environmental and Meteorological Monitoring Programs.

Should you have any questions concerning this letter, please contact Mr. Glen Kaegi, Regulatory Assurance Manager, at (815) 415-2800.

Respectfully, George P. Barnes Site Vice President LaSalle County Station Attachment cc: Regional Administrator - NRC Region Il NRC Senior Resident Inspector - LaSalle County Station

LASALLE COUNTY STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 2002 MAY 2003

TABLE OF CONTENTS Page INTRODUCTION ............................................................ 1

SUMMARY

............................................................ 2 1.0 EFFLUENTS 1.1 Gaseous Effluents to the Atmosphere .............................................................. 3 1.2 Liquids Released to Illinois River ................................................................ 3 2.0 SOLID RADIOACTIVE WASTE ................................................................. 3 3.0 DOSE TO MAN 3.1 Gaseous Effluent Pathways ............................................................ 3 3.1.1 Noble Gases ............................................................. 3 3.1.1.1 GammaDoseRates ............................................................ 3 3.1.1.2 Beta Air and Skin Rates ............................................................ 4 3.1.2 Radioactive Iodine ........................................................... 4 3.1.2.1 Iodine Concentrations in Air ..................................................... 4 3.1.2.2 Dose to Thyroid .................................. ......................... 4 3.1.3 Concentrations of Particulates in Air...................................................... 5 3.2 Liquid Effluent Pathways ........................................................... .5 3.3 Assessment of Dose to Member of Public ........................................................ 5 4.0 SITE METEOROLOGY .................... ,.6 5.0 ENVIRONMENTAL MONITORING ................................................................. 6 5.1 Gamma Radiation ................................................................. 6 5.2 Airbornel-131 and Particulate Radioactivity ................................................... 6 5.3 Aquatic Radioactivity ................................................................. 7 5.4 Milk ................................................................. 7 5.5 Terrestrial Radioactivity ........................ ........................................ 8 5.6 Sample Collections ................................................................. 8 5.7 Program Modifications ................................................................. 8 6.0 ANALYTICAL PROCEDURES ............................... ................................. 8 7.0 MELCH ANIMALS AND NEAREST LIVESTOCK CENSUS ................................ 8 8.0 NEAREST RESIDENT CENSUS ..................................... ........................... 8 9.0 INTERLABORATORY COMPARISON PROGRAM RESULTS ........... ............... 8 10.0 ERRATADATA ................................................................ 8 ii

TABLE OF CONTENTS (continued)

Page APPENDIX I - DATA TABLES AND FIGURES ............................................................. I-I Station Releases Table 1.1-1 Gaseous Effluents ................................... I-2 Table 1.2-1 Liquid Effluents ................................... 1-3 Table 2.0-1 Solid Waste Shipped Offsite for Burial or Disposal .............. I-4 Figure 3.1 Figure 3.1-4 Isodose and Concentration Contours ................................... I-5 Table 3.1-1 Maximum Doses Resulting from Airborne Releases .................................. 1-9 Table 3.2-1 Maximum Doses Resulting from Liquid Discharges ................................... 1-13 Table 3.3-1 10CFR20 Compliance Assessment ................................... I-14 Table 3.4-1 Maximum Doses Resulting from Airborne Releases Based on Concurrent Meteorlogical Data .............................. I-18 Environmental Monitoring Figure 5.0-1 Inner Ring TLD Locations ................... ................... I-20 Figure 5.0-2 Outer Ring TLD Locations .................... .................. I-21 Figure 5.0-3 Fixed Air Sampling and TLD Sites ...................................... I-22 Figure 5.0-4 Ingestion and Waterborne Exposure Pathway Sample Locations ..................................... I-23 Table 5.0-1 Radiological Enviromnental Monitoring Locations ..................................... 1-24 Table 5.0-2 Radiological Environmental Monitoring Program, Sampling Locations and Sample Collection and Analyses ..................................... 1-25 Table 5.0 Table 5.0-6 Radiological Environmental Monitoring Program Quarterly Summary ...................................... I-29 APPENDIX II - METEOROLOGICAL DATA ........................................................... 11-1 APPENDIX m - 2001 REMP SAMPLE RESULTS .......................................................... E-1 1 APPENDIX IV - NTERLABORATORY COMPARISON PROGRAM RESULTS ....... TV-1 APPENDIX V - ERRATA DATA (If applicable) ........................................................ V-1 iii

INTRODUCTION LaSalle County Station, a two-unit BWR station is located near Marseilles, Illinois in LaSalle County, 3.5 miles south of the Illinois River. The output of Unit one is 1183 MWe; the output of Unit 2 is 1187 MWe. Unit No. 1 loaded fuel in March 1982. Unit No. 2 loaded fuel in late December 1983. The station has been designed to keep releases to the environment at levels below those specified in the regulations.

Liquid effluents from LaSalle County Station are released to the Illinois River in controlled batches after radioassay of each batch. Gaseous effluents are released to the atmosphere after delay to permit decay of short-lived (noble) gases. Releases to the atmosphere are calculated on the basis of analyses of routine grab samples of noble gases as well as continuously collected composite samples of iodine and particulate radioactivity sampled during the course of the year.

The results of effluent analyses are summarized on a monthly basis and reported to the Nuclear Regulatory Commission as required per Technical Specifications. Airborne concentrations of noble gases, I-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 the LaSalle County Station to measure changes in radiation or radioactivity levels that may be attributable to station operations. If significant changes attributable to LaSalle County Station are measured, these changes are correlated with effluent releases. External gamma radiation exposure from noble gases and internal dose from I-131 in milk are the most critical pathways at this site; however, an environmental monitoring program is conducted which includes these and many other pathways which are less significant in terms of radiation protection.

1

SUMMARY

Gaseous and liquid effluents for the period contributed to only a small fraction of the LaSalle County Station Technical Specification limits. Calculations of environmental concentrations based on effluent, Illinois River flow, and meteorological data for the period indicate that consumption by the public of radionuclides attributable to LaSalle County Station does not exceed regulatory limits. Radiation exposure from radionuclides released to the atmosphere represented the critical pathway for the period with a maximum individual total dose estimated to be 1.lE-01 mrem for the year, where a shielding and occupancy factor of 0.7 is assumed. The assessment of radiation doses is performed in accordance with the Offsite Dose Calculation Manual (ODCM). The results of analysis confirm that the station is operating in compliance with 10CFR50 Appendix I, 10CFR20 and 40CFR190.

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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 1.33E+04 curies of fission -and activation gases were released with a maximum quarterly average release rate of 7.57E+02 liCi/sec.

A total of 3.16E-01 curies of I-131 were released during the year with a maximum quarterly average release rate of 2.05E-02 jiCi/sec.

A total of 2.8 E-02 curies of beta-gamma emitters was released as airborne particulate matter with a maximum quarterly average release rate of 1.92E-03 giCi/sec. A total of 4.58E-05 curies of alpha-emitting radionuclides was also released.

A total of 1.14E+02 curies of tritium was released with a maximum quarterly average release rate of 4.93E+00 iCi/sec.

1.2 Liquids Released to Illinois River There were zero batch liquid releases in 2002. Continuous release path activity was below applicable Lower Limits of Detection.

2.0 SOLID RADIOACTIVE WASTE Solid radioactive wastes were shipped by truck to the Envirocare Disposal Facility or to a waste processor. For further detail, refer to the LaSalle 2002 Radioactive Effluent Report.

The submittal date of this report was May 1, 2003;.

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

3.1.1 Noble Gases 3.1.1.1 Gamma Dose Rates Unit I and Unit 2 gaseous releases at LaSalle County Station are reported as Unit 1 releases due to a single station vent stack (SVS) release point. Offsite Gamma air and whole body dose rates are shown in Table 3.1-1 and were calculated based on measured release rates, isotopic composition of the noble gases, and average meteorological data for the period. Doses based on concurrent meteorological data are shown in Table 3.4-1. Isodose contours based on concurrent meteorological data for gamma dose for the year are shown in Figure 3.1-1. Based on measured effluents and meteorological data, the maximum total body dose to an adult would be 1.1 1E-01 mrem (Table 3

3. 1-1) for the year, with an occupancy or shielding factor of 0.7 included.

The maximum total body dose based on measured effluents and concurrent meteorological data would be 6.72E-02 mrem. (Table 3.4-1).

The maximum gamma air dose was 1.47E-01 mrad (Table 3.1-1) and 2.38E-01 mrad based on concurrent meteorological data (Table 3.4-1).

3.1.1.2 Beta Air and Skin 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 the 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 2

mg/cm and an occupancy factor of 1.0 is used. The skin dose from beta and gamma radiation for the year was 1.18E-01 mrem (Table 3.1-1) and 7.97E-02 mrem (Table 3.4-1) based on concurrent meteorological data.

The maximum offsite beta air dose for the year was 6.74E-03 mrad (Table 3.1-1) and 2.35E-02 mrad (Table 3.4-1) based on concurrent meteorological data. The air concentrations of radioactive noble gases at the offsite receptor locations are given in Figure 3.1-2.

3.1.2 Radioactive Iodine The human thyroid exhibits a significant capacity to concentrate ingested or inhaled iodine. The radioiodine, -131, released during routine operation of the plant, may be made available to man resulting in a dose to the thyroid. The principal pathway of interest for this radionuclide is ingestion of radioiodine in milk.

3.1.2.1 Iodine Concentrations in Air The calculated concentration contours for iodine in air are shown in Figure 3.1-3. Included in these calculations is an iodine cloud depletion factor vhich accounts for the phenomenon of elemental iodine deposition on the ground. The maximum offsite concentration is estimated to be 1.70E+01 pCilm for the year (Table 3.4-1).

3.1.2.2 Dose to Thyroid The hypothetical thyroid dose to a maximum exposed individual living near the station via ingestion of milk was calculated. The radionuclide considered was I-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 due to I-131 was 4.10E-01 mrem (child) for the year (Table 3.1-1).

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3.1.3 Concentrations of Particulates in Air Concentration contours of radioactive airborne particulates are shown in Figure 3.1-4. The maximum offsite average level is estimated to be 1.46E-04 pCi/m .

(Table 3.4-1) 3.2 Liquid Effluent Pathwavs 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 Nvhile on the shoreline. Not all of these pathways are applicable at a given time 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 gastro-intestinal tracts, thyroid, bone, skin; specific parameters for use in the equations are given in the Offsite Dose Calculation Manual. The maximum whole body dose was O.OOE+00 and organ dose was O.OOE+00 for the year (Table 3.2-1).

3.3 Assessment of Dose to Member of Public During the period January to December, 2002, LaSalle County Station did not exceed these limits as shown in Table 3.1-1 and Table 3.2-1 (based on yearly average meteorological data), and as shown in Figure 3.1-1 (based on concurrent meteorological data), and as shown in Table 3.3-1:

• The Radiological Effluent Technical Standards 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 quarter; 3 mrem to the whole body or 10 mrem to any organ during any 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 mrad for gamma radiation or 10 mrad for beta radiation during any calendar quarter; 10 mrads for gamma radiation or 20 mrad for beta radiation during any 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 OCFR20 limit on Total Effective Dose Equivalent to individual members of the public (100 mrem).

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

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4.0 SITE METEOROLOGY A summary of the site meteorological measurements taken during each calendar quarter of the year is given in Appendix II. The data are presented as cumulative joint frequency distributions of the wind direction for the 375' level and wind speed class by atmospheric stability class determined for the temperature difference between the 375' and 33' levels.

Data recovery for these measurements was 99.5% during 2002 (Table 3.4-1) 5.0 ENVIRONMENTAL MONITORING Table 5.0-1 provides an outline of the Radiological Environmental Monitoring Program (REMP) as required in the current Technical Standards. Tables 5.0-2 lists the program's sampling locations, collection frequencies and analyses for all samples collected. Tables 5.0-3 to 5.0-6 summarize data for the year. A detailed listing of all data is given in Appendix Im.

Specific findings for various environmental media are discussed below.

5.1 Gamma Radiation External radiation dose from onsite sources and noble gases released to the atmosphere was measured using CaF 2 thermoluminescent dosimeters (TLDs). Each location normally consists of 2 TLD sets. The quarterly average external radiation dose for the year was 23.8 miR at the indicator locations and 21.3 mR at the control locations. TLD results are listed in Table 4.0 of Appendix I and locations are shown in Figures 5.0-1 and 5.0-2.

Quarterly external radiation dose at indicator air sampling locations averaged 23.3 mR and is similar to levels measured in 1986 (17.1 mR), 1987 (17.8 mR), 1988 (16.5 mR),

1989 (17.6 mR), 1990 (17.8 mR), 1991 (17.7 mR), 1992 (15.5 mR), 1993 (14.5 mR),

1994 (15.4 mR), 1995 (15.3 mR), 1996 (15.9 mR) and 1997 (16.1 mR), 1998 (17.0 mR), 1999 (17.0 mR), 2000 (17.9 miR) and 2001 (20.1 mR). These differences are not statistically significant.

5.2 Airborne 1-131 and Particulate Radioactivity Locations of the samplers are shown in Figure 5.0-3. Airborne I-131 remained below the LLD of 0.07 pCi/m throughout the year.

Gross beta concentrations ranged from 0.011 to 0.053 pCi/m and averaged 0.027 3 3 pCi/m3 and were similar to levels measured in 1985 (0.025 pCi/m ), 1986 (0.027 pCi/m , except for the period from May 16 through June 6 when it was influenced by the nuclear reactor accident at Chemobyl), 1987 (0.027 pCi/m ), 1988 (0.031 pCi/m),

3 3 3 1989 (0.028 pCi/m), 1990 (0.024 pCi/m ), 1991 (0.022 pCi/m ), 1992 (0.022 pCi/m ),

1993 (0.022 pCi/in3) 1994 (0.022 pCi/in ), 1995 (0.021 pCi/in)3 1996 (0.021 pCi/mn),

1997 (0.022 pCi/m), 1998 (0.024 pCi/m3 ), 1999 (0.027 pCi/m 3), 2000 (0.028 pCi/i 3 )

and 2001 (0.027 pCi/i 3 ).

6

Gamma isotopic results were below the LLD level of 0.01 pCi/m3 in all quarterly composites.

No activity attributable to station operation was detected in any sample.

5.3 Aquatic Radioactivity Well water was collected quarterly from one onsite well and one offsite well and analyzed for tritium and gamma-emitting nuclides. All results were below the limits of detection, indicating that there was no measurable amount of radioactivity due to the Station's releases.

Weekly surface water samples from the Illinois River at Seneca and Illinois River Downstream were composited monthly and analyzed for gamma and beta-emitting nuclides. Weekly samples from the same locations were composited quarterly and analyzed for tritium. None of the composited samples indicated the presence of gamma-emitting nuclides above their respective LLD levels.

Gross beta activity averaged 5.3 pCilL in the Illinois River at Seneca samples, with a range of 3.8-8.4 pCifL. The Illinois River, Downstream sample averaged 5.5 pCi/L, with a range of 4.2-7.4 pCi/L.

Tritium activity in the quarterly upstream samples, Illinois River at Seneca, averaged 327 pCi/L with a maximum fourth quarter concentration of 702 pCi/L. In the Illinois River DoNvnstream samples, tritium activity averaged 417 pCi/L with a maximum fourth quarter concentration of 827 pCi/L. These values are well below the reporting level of 30,000 pCi/L.

Sediment samples were collected twice a year from two indicator locations (Illinois River, Downstream) and analyzed for gamma-emitters. Cs-134 and Cs-137 concentrations were below the detection limits of 0.15 pCi/g dry weight and 0.18 pCi/g dry weight, respectively, in all samples.

Levels of gamma radioactivity in fish were measured and found in all samples to be below the lower limit of detection for the program.

5.4 Milk Milk samples were collected monthly from November through April and biweekly from May through October and analyzed for Iodine-131 and gamma-emitting nuclides.

1-131 remained below the detection limits of 0.5 pCi/L (May - October) and 5.0 pCi/L (November - April). Cs-134, Cs-137 and Ba/La-140 were below the LLD levels of 15, 18 and 15 pCi/L, respectively.

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5.5 Terrestrial Radioactivity Vegetables were collected in the third quarter and analyzed for iodine-131 and gamma-emitting nuclides. All nuclides were below the limits of detection, indicating there was no measurable amount of radioactivity attributable to the Station's releases.

5.6 Sample Collections All samples were collected as scheduled except those listed in the Listing of Missed Samples, Section 2 of Appendix III.

5.7 Program Modifications There were no changes to the program in 2002.

6.0 ANALYTICAL PROCEDURES Procedures used during the period covered in this report remained unchanged. A summary of the procedures used for analyzing radioactivity in environmental samples is given in Appendix VI of the Annual Radiological Environmental Operating Report for 1993. The submittal date for this report was April 26, 1994.

7.0 MILCH ANIMALS AND NEAREST LIVESTOCK CENSUS A census of milch animals vas conducted within a 6.2-mile radius of the Station. The survey was conducted by "door-to-door" canvas by A. Lewis on August 26, 2002. The nearest livestock census was conducted by A. Lewis on August 26, 2002. The results of each census are presented on pages 31 and 32 of Appendix III.

8.0 NEAREST RESIDENT CENSUS A census of the nearest residences within a 6.2-mile radius was conducted by A. Lewis on August 26, 2002.

Results of the nearest residence census are presented on page 33 of Appendix III.

9.0 INTERLABORATORY COMPARISON PROGRAM RESULTS Environmental Incorporated's Interlaboratory Comparison Program Results are presented in Appendix IV.

10.0 ERRATA DATA There is no errata data for 2002.

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APPENDIX I DATA TABLES AND FIGURES 1-1

Table 1.1-1 LASALLE COWUY NUCLEAR POWER STATJON EFFLUENT AND WASl' DISPOSAL AMAL REPORT (2002)

UNTS ONE AND.TWO DOCKT NLUMBBRS 50-373 AND 50-374 GASEOUS EFFLUENTS-SUMMATION OF ALL RELEASES

- s -

ldmtod I Un I SQtr 2ndQrI 3rdtr. 4thr tTta1 ror% I A. FLulon and Activation Gas Releases

.TotlMemo Activity Ci 1.31E4O$ 6.96E+03 2.25E03 3.77E.03 35

2. Aveace RdsoRtc1 uCi/ico 1.68E+02 17.57E402 2.03E+02 4.74E+02

3. Percent of Technical Specificelion X --

Liit I&Jodine Relc.Ses lnTaiI 1-131 Activity Ci 2.95E-02 4.42EO2 7.92E-02 1.63E01 1 3S% I 2.AveragcRelease Rate

3. Percent of Technlcal Specificaion uCisc 3.80E-03 5.63-03 I 9.26E.03 f 2.05E.02 0 j D. Tritlum Releases ______ ______ 3.50E401 21%~~~~~~~~~~

C. Particulate (> Sdiy halt-life) Rele2ses I. GrossActivity Ci 6.69E.04 2.78E03 1.63E.2 95E03 33%

2. Avcrstc Reloas Rate uCi/sec 8.60E05 3.54E-04 1.926-O3 1.1SEO3

3. Percent ofTechnical Specification  %

3. Gross lpha Activity Ci c1.OOE-11 j cI.OB-11 2.711E05 1.87E.05

[1 .ToltalcaseAcivty Ci 3.84E*01 1 £64E*O1 2.5E+01 l3.50E 1

12. Averee Relcase Rate uCi/e I 4.93EU+0 1.1D6E+Qu 5.Z1 tuuI 4.41 h+U I iit [S`J I 1

• I

• I

• I

'*" -This nfonnadon Iscontained Inthe Radio1ogical Impacton Man section ofthe roporL 1,e indicates activty of sample is lss than Ll D given in uCi/ml 1-2

Table 1.2-1 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2002)

LIQUID RELEASES UNIT I and UNIT 2 SUMMATION OF ALL LQUI) RELEASES I. Untm I Qtr 2ndQt_ 3rQtr l TTutiQr; Tohl ErorI A. FMslon and Activation Products I.Tol Actvity Released Ci -<LLD < LD l<LLD LD N/A 2.Avege Conccnration Released uCi/mS <WLD ____<LDD 3.PercgntfApplicableLimit I A_ I____-__

B Tritium I. Toal Acvity Released Cj C--LLD <LtD ILD <LLD N/A

<LD LLD cLD

2. Average Concntration Released 3.Pcert of Applicable Limit Ciiml

_ _ __ ______I l_cLLD C. DIssoled Noble Cases

i. Trotal Activity Releasd C <ILD <LLD <LLD <LLD ~ N/

2. Averago Ceentration Rea6ed leaCWlm<l <LLD ILLDI <LD <LD

3. Prcent of Applicable Limit  %

1). Gross Alpha I.Total Activity Released (stimate) Ci <L cLD L <LLDNA

2. Averago Co=n=don Relezsd uCi/ml <LD CLLD <L <L Piof APPliablUrnit _

rE Volume of Liquld Wste to Dlishsrge liters 0.E+0 O.OOE+00 O.OOE+OOO.0OE+0 A

[F. Volume ofDutilon Water liters O.OOE+00 O.OOE+O0.13+O .OQIE+OO l N/A I" This infaoration Iscontaincd in the Radiological imptct on Man section ofthe report.

"< indicates activity ofsamnple is less than Lll siven in Ci/ml 1-3

TABLE 2.0-1 Table 2.0-1 has been deliberately deleted. For Solid Waste Disposal detail, refer to the LaSalle County Station 2002 Effluent Report.

1-4

.'Plgure3&14 Estimated Cumulative Gamma Dose tin rnrem) from the LaSafle Staton for the period '5 pi January-December 2002 IL Isopleth Lbels l Small figure - mulUply by 1O' Large figure - mulliply by 10 0 I 2 mi 25-0 I 5t 10 15 OFd

/s\stsrr ttlai cio

/ 0( j < to 15 s 0m 1-5

Figure 3.1-2 Estimated Total Concentrations (in pCllm3) / S of Noble Gases fom the LaSalle Stafon for the period January-December 2002 IsoQ Labels. \

Small figure - mulUply by 10' Large figure - multiply by 101 0 I Jati

/~~- 12

° .... ...510 15 20ml 1-6

Figure 3.1-3 Estimated Total Concentrations (in pCirm3) of lodines from the LaSalle Station for the period January-December 2002 5 Isopleth Labels Small figure - muliUply by 101.

Large figure - mulUply by 1 t 0 I 2 n

~~~~~~~~~~~~~~~~~~~n

/\ W§dron o -

6

/ I o /~~~~~~~~~~~~~~~~~~1 0o Xty Seneca~~~~~~~~~~~~~~

01>,~~ 5 0 5 0.

. . . . . . I- l 1-7

Figure 3.1-4 Estimated Total Concentrations (in pCi/m3) of Particulates from the LaSalle StaUon _

for the perdod January-December2002 Isopleth Labels Small figure - multiply by 104, Large figure - multiply by b14K 0

1 2 l 0~

0~~~~~~

/ ' s 5,/~~~or Sk

/ 01t

__' _ 5 0 1 --

2 0 to 15 o0v 1-8

Table 3.1-1 LASALLE STATION UNIT ONE ACTUAL 2002 MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES PERIOD OF RELEASE - 01/01/02 0 12/31/02 CALCULATED 04/04/03 INFANT RECEPTOR 1ST 2ND 3RD 4TH TYPE QUARER QUARTER QUARTER QUARTER NAL JAN-MAR APR-JUN JUL-SEP OCT-DEC GAMMA AIR 2.OOE-02 4.99E-02 3.78E-02 3.91E-02 1.47E-01 (MRAD) (WSW ) (WSW ) (WSW ) (WSW ) (WSW )

BETA AIR 7.25E-04 2.77E-03 1.33E-03 1. 92E-03 6.74E-03 (Mrx) (ESE (ES ) (ESE ) (ESE ) (ESE )

TOT. BODY 1 .SIE-02 3 .77E-02 2 .86E-02 2.95E-02 1.11E-01 (MR2M) (WSW ) (WSW ) (WSW ) (WS ) (WSW )

SKIN 1.59E-02 4. 1E-02 3. 1:-02 3.14E-02 1.18E-01 (KREM) (WSW (WSW ) (WSW ) (WSw ) (WSW )

ORGAN 3.89E-03 6.19E-02 1. 94B-01 1.38E-Ol 3.97E-01 (MREM) (ESE ) (ESE ) (ESE ) (ESE ) (ESE )

THYROID THYROID TROID THYROID THYROID THIS IS A REPORT FOR THE CALENAR YEAR 2002 COMPLIANCE STATUS - OCFR 50 APP. I INFANT RECEPTOR

---

F APP I.--% -----

QTRLY 1ST QTR 2ND TR 3RD Th 4TH QTR YRIY OF OBJ JAN-MAR APR-JUN JUL-SEP OCT-DEC OBJ APP. I GAMMA AIR (MRAD) 5.0 0.40 1.00 0.76 0.78 10.0 1.47 BETA AIR (MRAD) 10.0 0.01 0.03 0.01 0.02 20.0 0.03

'TOT. BODY (RBM) 2.5 0.61 1.51 1.14 1.18 S.0 2.22 SKIN (EM) 7.5 0.21 0.53 0.40 0.42 15.0 0.78 ORGAN (M) 7.5 0.05 0.83 2.58 1.84 15.0 2.65 THYROID THYROID .THYROID THYROID THYROID RESULTS BASED UPON: ODCM ANNEX REVISION 3.0 MAY 2001 ODCM SOFTWARE VERSION 1.1 January 1995 ODCM DATABAS2 VERSION 1.1 January 1995 1-9

Table 3.1-1 (continued)

LASALLE STATION UNIT ONE ACTUAL 2002 MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES PERIOD OF RELEASE - 01/01/02 TO 12/31/02 CALCULATED 04/04/03 CHILD RECEPTOR 1ST 2ND 3RD 4TH TYPE QUARTER QUARTER QUARTER QUARTER ANNUAL JAN-MR APR-JUN JUL-SEP OCT-DEC GAMKA AIR 2.00E-02 4.99E-02 3.78E-02 3.91E-02 1.47E-01 (MRAD) (WSW (WSW ) (WS ) (WSW ) (WSW )

BETA AIR 7.25E-04 2.77E-03 1.33E-03 1.92E-03 6.74E-03 (MRAD) (ESE ) (ES ) (ESE ) (ESE ) (ESE )

TOT. BODY 1.51E-02 3.77E-02 2.86E-02 2.95E-02 1.ll-Ol (MREM) (WSW ) (WSW ) (WSW ) (WSW ) (WSW )

SKXN 1.59E-02 4.01E-02 3.01E-02 3.14E-02 1.18E-01 (MREM) (WSW ) (WSW ) (WSW ) (WSW ) (WSW )

ORGAN 3.25E-03 6.56E-02 2.OOE-01 1.41E-01 4.10E-01 (REM) (NNE ) (ES ) (ESE ) (ESE ) (ESE )

THYROID THYROID THYROID THYROID THYROID THIS IS A REPORT FOR THE CALENDAR YEAR 2002 COMPLIANCE STATUS - 10CFR 50 APP. I CHILD RECEPTOR

---

OF APP I. - -----------

QTRIY 1ST QTR 2ND QTR 3RD QTR 4TH QTR YRLY ' OF OBJ JAN-MAR APR-JUN JUL-SEP OCT-DEC OBIT APP.

GAMMA AIR (MRAD) 5.0 0.40 1.00 0.76 0.78 10.0 1.47 BETA AIR (DMRAD) 10.0 0.01 0.03 0.01 0.02 20.0 0.03 TOT. BODY (MREM) 2.5 0.61 1.51 1.14 1.18 5.0 2.22 SKIN (MREM)1 7.5 0.21 0.53 0.40 0.42 15.0 0.78 ORaN (MM M) 7.5 0.04 0.87 2.67 1.87 15.0 2.73 THYROID THYROID THYROID THYROID I fIYROID RESULTS BAS ED UPON: ODCM ANNErX REVISION 3.0 MAY 2001 ODCM SOFTRARE VERSION 1.1 January 1995 ODCM DATABASE VERSION 1.1 January 1995 1-10

Table 3.1-1 (continued)

LASALLE STATION UNIT OE ACTUAL 2002 MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES PERIOD OF RELEASE - 01/01/02 TO 2/31/02 CALCULATED 04/04/03 TEENAGER RECEPTOR 1ST 2ND 3RD 4TH TYPE QUARTER QUARTER QUARTER QUARTER ANUAL JAN-MAR APR-JUN JUL-SEP OCT-DEC GAMA AIR 2.00E-02 4.99E-02 3.7BE-02 3.92E-02 1.47B-01 (MRAD) (WSW ) (WSW ) (WSW ) (WSW ) (WSW )

BETA AIR 7.25E-04 2.77E-03 1.33E-03 1.92E-03 6.74E-03 (MRAD) (ESE (ESE ) (ESE ) (ESE ) (ESE )

TOT. BODY 1.51E-02 3.77E-02 2.86E-02 2.95E-02 1.11Z-01 (MP") (WSW ) (WSW ) (WSW ) (WW ) (WSW )

SKIN 1.59E-02 4.01E-02 3.012-02 3.14E-02 1.18E-01 (MREM) (WSW (WSW ) (WSW ) (WSW ) (WSW ORGAN 2.41E-03 4.OOE-02 1.22Z-01 8.54E-02 2.49E-01 (MRM) (NNE ( ) (N= I (NNE ) (NNE )

ThYROID THYROID THYROID THYROID THYROID THIS IS A REPORT FOR THE CALENDAR YEAR 2002 COMPLIANCE STATUS - OCFR 50 APP. I TBENAGER RECEPTOR

• OF APP I.- -

QTL 1ST TR 2ND TR 3RD QTR 4TH QTR YRLY OF OBJ JAN-MAR APR-JUN JUL-SEP OCT-DEC OBJ APP. I GAMMA AIR (iRAD) 5.0 0.40 1.00 0.76 0.78 10.0 1.47 BETA AR WD) 10.0 0.01 0.03 0.01 0.02 20.0 0.03 TOT. BODY (MREM) 2.5 0.61 1.51 1.14 1.16 5.0 2.22 SXIN (RBMI 7.S 0.21 0.53 0.40 0.42 15.0 0.78 ORGAN (MMEl 4) 7.5 0.03 0.53 1.62 1.14 15.0 1.66 THYROID THYROID THYROID THYROID I IMYROID RESULTS BAS ED UPON: ODCM AMNEX REVISION 3.0 MAY 2001 ODCM SOFTWARE VERSION 1.1 anuary 1995 ODCM DATABASE VERSION 1.1 January 1995 I-11

Table 3.1-1 (continued)

LASALLE STATION UNIT ONE ACTUAL 2002 MAXIMUM DOSES RESULTING ROM AIRBORNE RELEASES PERIOD oF RELEASE - 01/01/02 TO 12/31/02 CALCULATED 04/04/03 ADULT RECEPTOR 18T 2ND 3RD 4Th TYPE QUARTER QUARTER QUART33R QUARTER ANNUAL JAN-MAR APR-JUN JL-SEP OCT-DEC GAMMA AIR 2.00E-02 4.99E-02 3.782-02 3.912-02 1.47E-01 (MRAD) (WSW ) (WSW ) (WSW ) (WSW ) (WSW )

BETA AIR 7.25E-04 2.77E-03 1.33E-03 1.92E-03 6.742-03 (MRAD) (ESE ) (ESE ) (ESE. ) (ESS ) (ESE )

TOT. BODY 1.51E-02 3.77E-02 2.86E-02 2.952-02 1.21E-01 (MREM) (WSW ) (WSW ) (WSW ) (WSW ) (WSW )

SKIN 1.59E-02 4.01E-02 3.012-02 3.14E-02 a.18E-01 (MREM) (WSW ) (WSW ) (WSW (WSW ) (WSW )

ORGAN 2.66E-03 4.13E-02 1.26E-01 8.88B-02 2.59S-01 (MREM) (NNE ) (N ) (NNE ) (NNE ) (NNE )

TKYOID THYROID 0m>ow TROID THYROID THIS IS A REPORT FOR THE CALENDAR YEAR 2002 COMPIXANCE STATUS - 10CFR 50 APP. I ADULT RECEPTOR

---

t OF APP I. -----------

QTRLY 1ST TR 2ND QTR 3RD QTR 4TH QTR YRLY 5I OF 0BJ JAN-MAR APR-JUN JUL-SEP OCT-DEC OBa APP. I GAMMA AIR MRAD) 5.0 0.40 1.00 0.76 0.78 10.0 1.47 BETA AIR (UAf) 10.0 0.01 0.03 0.01 0.02 20.0 0.03 TOT. BODY (EM) 2.5 0.61 1.51 1.14 1.l8 5.0 2.22 SKIN MREM) 7.5 0.21 0.53 0.40 0.42 15.0 0.78 ORGAN (MREM) 7.5 0.04 0,55 1.68 1.18 15.0 1.73 THYROID THYROID *THYROID TROID THYROID RESULTS BASED UPON: ODCM ANNEX REVISION 3.0 MAY 2001 ODCM SOnTWARS VERSION 1.1 January 1995 ODCM DATABASE VERSION 1.1 January 1995 1-12

TABLE 3.2-1 Table 3.2-1 has been deliberately deleted. There were no liquid releases in 2002.

1-13

Table 3.3-1 LASALLE STATION UNIT ONE 10 CFR 20 COMPLIANCE ASSSMSIVT PERIOD OF ASSESSMENT 01/01/02 TO 12/31/02 CALCULATED 04/04/03

1. 10 CPR 20.1301 (a)(1) Compliance Total Effective Dose Egivalent, mrem/yr -

4.41E-01 10 CFR 20.1301 (a)(1) limit mrem/yr 100.0

% of limit 0.44 Comp]Liance Summary - OCFR20 1st ind 3rd 4th

• of Qtr Qtr Qtr Qtr Limit TEDE 7.54E-02 1. L6E-01 1.25E-01 1.25E-01 0.44 RESULTS BASED UPON; ODCM ANNEX REVISION 3.0 MAY.2001 OIDCM SOFTWARE VERSION 1.1 January 1995 ODCM DATAB8ASE VERSION 1.1 January 1995 1-14

Table 3.3-1 (continued)

LASALLE STATION UNIT ONE 10 CFR 20 COMPLIANCE ASSESSMENT PERIOD OF ASSESSMENT 01/01/02 TO 12/31/02 CALCULATED 04/04/03

2. 10 CFR 20.1301 (d) /40 CFR 190 Compliance Dose Limit  % of (mrem) (mrem) Limit Whole Body Plume 1.1l1E-01 (DDE) Skyshine 3 .09E-01 Ground 2. 05E-03 Total 4.22E-01 25.0 1.69 Organ Dose Thyroid 2.36E-01 75.0 0.32 (CDE) Gonads l.23E-02 25.0 0.05 Breast 1.22E-02 25.0 0.05 Lun 1.23E-02 25.0 0.05 Marrow 1.23E-02 25.0 0.05 Bone 1.23E-02 25.0 0.05 Remainder 1.26E-02 25.0 0. 05 CEDE 1. 9E-02 TEDE 4.41E-01 100.0 0.44 RESULTS BASED UPON: ODCM ANNEX REVISION 3.0 MAY 2001 ODCM SOFTWARE VERSION 1.1 January 1995 ODCM DATABASE VERSION 1.1 January 1995 1-15

Table 3.3-1 (continued)

LASALLE STATION UNIT TWO 10 CPR 20 COMPLIANCE ASSESSMENT PERIOD OF ASSESSMENT 0101/02 TO 12/31/02 CALCULATED 04/04/03

1. 10 CPR 20.1301 (a) (1) Compliance Total Effective Dose Eivalent, mrem/yr -

3.14E-01 10 CFR 20.1301 (a) (1) limit mrem/yr 100.0

% of limit 0.31 Compliance Summary -: 10CFR20 let 2nd 3rd 4 th t of Qtr Qtr Qtr Qtr Lim t TEDE 8.53E-02  ?.18E-02 8.39E-02 7.31E-02 0.31 RESULTS BASED UPON: ODCM ANNEX REVISION 3.0 MY 2001 ODCM SOFTWARE VERSION 1.1 January 1995 ODC DATAAASR VERSION 1.1 Jaxuary 1995 1-16

Table 3.3-1 (continued)

LASALLE STATION UNIT TWO 10 CFR 20 COMPLIANCE ASSESSMENT PERIOD OF ASSESSMENT 01/01/02 TO 12/31/02 CALCULATED 04/04/03

2. 10 CFR 20.1301 (d)/40 CFR 190 Compliance Dose Limit  % of (mrem) (rrem) Limit Whole ody Plume O.OOE+00 (DDE) Skyahine 3.14E-01 Ground O.OOE+00 Total 3.14E-01 25.0 1.26 Organ Dose Thyroid 0. OOE+00 75.0 0.00 (CDE) Gonads O.008+00 25.0 0.00 Breast O. OOEIO0 25.0 0.00 Lung O.OOE+O0 25.0 0.00 Marrow O.002+00 25.0 0.00 Bone 0. OE+00 25.0 0.00 Remainder 0. OOE+00 25.0 0.00 CEE 0. OOE+00 TEDS 3.14E-01 100. 0 0.31 RESULTS BASED UPON; ODCf4 ANNEX REVISION 3.0 MAY 2001 ODCM SOFTWARE VERSION 1.1 January 1995 ODCM DATABASE VERSION 1.1 January 1995 1-17

Table 3.4-1 LaSalle Station - Unit 1 MAXIMUH1 DOSES RESLTING FROM AIRBORNE RELEASES 2002 TYPE OF DOSE FIRST CUARTER SECOND QUARTER THIRD QUARTER FOURTH QUARTER AHNUAL GAIMA AIR (mrad) 1.05SE-02( SE) 3.755E-02(WSW) 5.500E02(WSW) 2.905E-02( S ) 1.189E01WSW)

BETA AIR mrad) 1.250E-03 E ) 5.500E-03( SW) .3.895E-03WSW) 4.735E-03( S ) 1.177E-02( SW)

WHOE BOOY (mrem) 3.255E-03(SSW) 1.090E-02( SW) 1.220E-02( W ) 9.800E-03(SSW) 3.361E-02(SSW)

SKIN mrem) 4.350E-03( SE) 1.470E-02( SW) 1.480E-02( ) 1.265E-02( S 3 .984E-02(S5W)

ORGAN (rem) 2.775E-04 E ) 4.680E-04( SW) 1.305E-03(WSW) 2.380E-03( S ) 3.510E-03 S )

CRITICAL PERSON Child Child Child Child Child CRITICAL ORGAN Thyroid Thyroid Thyroid Thyroid ThyroId COMPLIANCE STATUS 10 CFR 50.APP. I 10 CFR 50 APP.I TYPE OF DOSE QUARTERLY OBJECTIVE S OF APP. I YEARLY OBJECTIVE T OF APP. I GAMMA AIR (mrad) 5.0 1.10 10.'0 1.19 BETA AIR (rad) 10.0 0.05 20.0 0.06 WHOLE BoY (mrem) 2.5 0.49 5.0 0.67 SKIN (mrem) 7.5 0.20 15.0 0.27 ORGAN (mrem) 7.5 0.03 15.0 0.02 CRITICAL PERSON Child Child CRITICAL ORGAN Thyroid Thyroid Calculation used release data from the following:

Unit 0 - Chimey Date of calculation: 411812003 1-18

Table 3.4-1 (continued)

LaSalle Station - Unit 2 MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES 2002 TYPE OF DOSE FIRST QUARTER SECOND QUARTER THIRD QUARTER FOURTH QUARTER ANNUAL GANMA AIR (mrad) 1.055E-02( SE) 3.755E-02(WSW) 5.500E-02(WSW) 2.90SE-02( S ) 1.189E-01(WSW)

BETA AIR (mrad) 1.250E-03( E ) S.SOE-03( SW) 3.895E-03(WSW) 4.735E-03( S ) 1.177E-02( SW)

WHOLE BODY (mrea) 3.255E-03(SSW) 1.O90E-02( SW) 1.Z2E-bZ W) 9.800E-03CSSW) 3.361E-02(SSW)

SKIN (Gren) 4.350E-03( SE) 1.470E-02( SW) 1.480E-02( W) 1.265-02 S ) 3.984E-02(SSW)

ORSGAf(mrem) 2.775E-04( E ) 4.680E-04( SW) 1.305E-03(WS') 2.380E-43( S ) 3.510E-03 S )

CRITICAL PERSON Child Child Child Chi1d Child CRITICAL ORGAN Thyroid Thyroid Thyroid Thyroid Thyroid COMPLIANCE STATUS 10 CFR 50 APP. I 10 CFR 50 APP.I TYPE OF DOSE QUARTERLY O6JECTIVE X OF APP. I YEARLY OBJECTIVE S OF APP.

GAtA AIR (rad) 5.0 1.10 10.0 1.19 BETA AIR (nrad) 10.0 0.05 20.0 0.06 WHOLE BDY (rem) 2.5 0.49 5.0 0.67 SKIN (mrem) 7.5 0.20 15.0 0.27 ORGAN rem) 7.5 0.03 15.0 0.02 CRITICAL PERSON Child Child CRITICAL ORGAN Thyrold Thyrold Calculation used release data from the following: Maximum Offsite Unit 0 - Chimnery Values (pCiVm3)

Iodine 1.70E+01 Particulate Matter 1.46E-04 Data Recovery 99.5%

(priority parameters)

Date of calculation: 4/18/2003 1-19

Figure 5.0-1 1.

$ molur U

IM WM==M==m iA 2

• .S Ii 14 W"

2. Kktu m TLD Lec;Uci LASALLE COUNTY STATION INNER RING TD LOCATIONS 1-20

Figure 5.0-2 IJ ** 2O53 2054 i1I

• 211-1 2-1 Grind Rldge 3 21-2 20 -2 tVera

" MIt 28U2 1207 1 207-2 Knsmsn ftznrmm a naD L1>o X saiTe Staro

!E - I I LASALLE COUNTYSTATION OUTER RIG TL LOCTIOM 1-21

Figure 5.0-3 I

1* I 60 SL P ? o p.rt 4 st*PrOprt j Omnd Pidge Verona Kinsman I Rolansim L:

aorta I '1 Jrun

- ~ ~~ - ~- -

uy d

• LmlionNnastonCounty Ak S=pM S AkSarige LoesUo E OU 7 ST T - -AL

• 2 4

• a * @ .-

W_____

L-01 Nearslte No. I l207 Snea L.3 OitsIn.No.3 48 Mames I.4 Nearit No. 4 L10 Smrator L.05 OnsilNo.5 LI1 Rbsom WA6 Nearstte No.6 1-22

Figure 5.0-4 To W-2 I LaSalle County Sttion l

.14.S I la Ingestion and Waterbome Exposure Pathwal I SampleLocations I. . 0 1 umt L-21 Illinois River at Seneca Fish L-27 LSCS Onsite Well at Station 1 Milk L-28 Marseilles Well

+ Sediment L-35 Marseilles Pool of Illinois River C Water L-36 Illinois River Downstream of Discharge L-40 Illinois River Dounstream L41 Ilinois River Downstream L42 Biros Farm 1-23

TABLE 5.0-1

>. C)

LaSalle County Station 0)

Radiological Environmental c Monitoring Stations . . ,

L-01 Nearsite No. 1 ' v L-03 Onsite No. 3 v v L-04 Nearsite No. 4 v v L-05 Onsite No. 5 v v L-06 Nearsite No. 6 vO v L-07 Seneca v L-08 Marseilles v L-10 Streator v v L-1I Ransom ' v L-21 Illinois River at Seneca . . . .v L-27 LSCS Onsite Well at Station L-28 Marseilles Well L-35 Marseilles Pool of Illinois River L-36 Illinois River Upstream of Discharge L-40 Illinois River Downstream . . . . v v L-41 Illinois River Dovnstream . . v L-42 Biros Farrn v L-Quadrant 1 L-Quadrant 2 v L-Quadrant 3 v L-Quadrant 4 L-Control v CENSUS Dairy Residence Livestock I-24

TABLE 5.0-2 LASALLE STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM, SAMPLING LOCATIONS

1. AIR SAMPLERS Distance Direction Sector Site Codea Location (miles)

L-01 Nearsite No. 1 0.5 NNW R L-03 Onsite No. 3 0.2 ENE D L-04 Farfield No. 4 3.2 E E L-05 Onsite Station No. 5 0.3 ESE F L-06 Nearsite No. 6 0.4 WSW M L-07 Seneca 5.2 NNE B L-08 Marseilles 6.0 NNW R L-10 (C) Streator 13.5 SW L L-11 Ransom 6.0 S J

2. TLDs

a. Same as No. 1.

b. Special TLD locations Distance Direction Sector Site Code (miles)

Inner Ring L-101-1,2 0.5 N A L-102-1,2 0.6 NNE B L-103-1,2 0.7 NE C L-104-1,2 0.8 ENE D L-105-1,2 0.7 E . E L-106-1,2 1.4 ESE F L-107-1,2 0.8 SE G L-108-1,2 0.5 SSE H L-109-1,2 0.6 S J L-110-1,2 0.6 SSW K L-l l lb-1,2 0.8 SW L L-112-1,2 0.9 WSW M L-113a-1,2 0.8 W N L-114-1,2 0.9 WNW P L-115-1,2 0.7 NW Q L-116-1,2 0.6 NNW R a Control (background) locations are denoted by a "C" after site code. All other locations are indicators.

I-25

TABLE 5.0-2 (continued)

LASALLE STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM, SAMPLING LOCATIONS

2. TLDs

--b. Special TLD locations (continued)

Distance Direction Sector Site Code (miles)

Outer Ring L-201-3,4 4.0 N A L-202-3,4 3.6 NNE B L-203-1,2 4.0 NE C L-204-1,2 3.2 ENE D L-205-1,2 3.2 ESE F L-205-3,4 5.1 E E L-206-1,2 4.3 SE G L-207-1,2 4.5 SSE H L-208-1,2 4.5 S J L-209-1,2 4.0 SSW K L-210-1,2 3.3 SW L L-211-1,2 4.5 WSW M L-212-1,2 4.0 WSW M L-213-3,4 4.9 W N L-214-3,4 5.1 WNW p L-215-3,4 5.0 NW Q L-216-3,4 5.0 NNW R

3. MILK Distance Direction Sector Site Codea Location fmile)

L-42 (C) Biros Farm 14.2 E E

4. GROUND/WELL WATER Distance Direction Sector Site Codea Location (miles)

L-27 LSCS Onsite Well at Station At Station L-28 Marseilles Well 7.0 NW Q a

Control (background) locations are denoted by a "C" after site code. All other locations are indicators I-26

TABLE 5.0-2 (continued)

LASALLE STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM, SAMPLING LOCATIONS

5. SURFACE WATER Distance Direction Sector Site Codea Location (miles)

L-21 (C) Illinois River at Seneca 4.0 NE C L40 Illinois River Downstream 5.2 NNW R

6. FISH Distance Direction Sector Site Codea Location (miles)

L-35 Marseilles Pool of Illinois River 6.5 NW Q L-36 (C) Illinois River Upstream of Discharge 4.3 NNE B

7. SHORELINE SEDIMENTS Distance Direction Sector Site Codea Location (miles)

L40 Illinois River Downstream 5.2 NNW R L-41 Illinois River Downstream 4.6 NNW A

8. VEGETATION Distance Direction Sector Site Codea Location (niles)

L-Quadrant-l Diane Partridge 4.5 NE C L-Quadrant-2 Mike & Gina Welbourne 3.8 ESE H L-Quadrant-3 Michael Olsen 1.5 WSW M L-Quadrant-4 Robert Eisers 4.5 NW Q L-Control(C) Eugene Clements 10.0 NW Q a Control (background) locations are denoted by a "C" after site code. All other locations are indicators.

I-27

TABLE 5.0-2 (continued)

LASALLE COUNTY STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM, SAMPLE COLLECTION AND ANALYSES Location Collection Type of Frequency Sample Media Code' Site Frequency Analysis of Analysis 1.Airbome Onsite, Nearfield and Control Filter exchange Gross Beta Weekly Particulates weekly Gamma Isot. Quarterly Composite L-0 I Nearsite No. (orifweklygsbetaina L-03 Onsite No. 3 sample excecds SX the L-05 Onsite No. S aveage concentration or L-06 Nearsite No.6 precedralendar quarter).

L-10(C) Streator Far Field Gamma Isot. irgross betainasanple exceeds 10times theyearly mean orcontrol L-04 Rte. 70 samples adradioactivity ik L-07 Seneca conlrnrmedashaving itsc<iginin L-08 Marseilles airben efluents fion station L-1l Ranson

2. Airbome Same as 1. Canister exchange 1-131 Biweekly Iodine biweekly

3. Air Sampling Same as 1. - Test and Weekly Train Maintenance

4. TLDs a. Same as 1. Quarterly Gamma Quarterly (two TLDs per location)

b. L-101-1,2 Inner Ring 102-1,2 103-1,2 104-1,2 105-1,2 106-1,2 107-1,2 108-1,2 109-1,2 110-1,2 1l lb-1,2 112-1,2 113a-1,2 114-1,2 115-1,2 116-1,2

c. L-201-3,4 Outer Ring 202-3,4 203-1,2 204-1,2 205-1,2,3,4 206-1,2 207-1,2 208-1,2 209-1,2 210-1,2 211-1,2

'Control (background) locations are denoted by a "C" in this column. All other location are indicators.

I-28

TABLE 5.0-2 (continued)

LASALLE COUNTY STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM, SAMPLE COLLECTION AND ANALYSES Location Collection Type of Frequency Sample Media Code' Site Frequency Analysis of Analysis

4. TLDs (continued)

Outer Ring Quarterly Gamma Quarterly L-212-1,2 213-3,4 214-3,4 215-3,4 216-3,4

5. Milk L42 (C) Biros Farm Biweekly: 1-131 Biweekly.

May-October Gamma Isot. May-October Monthly: Monthly November-April November-April

6. Vegetables Quad I D. Partridge Annually- two varieties Gamma sot. Annually Quad 2 Mike &Gina from each location as 1-131 Annually, on broad leaf Velboume available at harvest. vegetation.

Quad 3 M. Olsen Quad 4 R. Eisers Control E. Clements

7. Ground/Vell L-27 LSCS Onsite Well Quarterly Gamma sot. Quarterly Water L-28 Marseilles Well Tritium S. Surface Water L-21 (C) Illinois River Weekly Gross Beta Monthly composite.

at Seneca Gamma Isot. Monthly composite.

L-40 Illinois River Tritium Quarterly composite.

Downstream

9. Fish (at least L-35 Marseilles Pool Two times/year Gamma Isot. Two times/year on two species) of Illinois River edible portions only.

L-36 (C) Illinois River Upstream of Discharge

10. Sediments L-40 Illinois River Semiannually Gamma Isot. Semiannually Downstream L-41 Illinois River Downstream I1. LandUse Census Milch Animals

a. SiteBoundaryto2miles - a. Enumeration Annually during grazing by a door to door season.

or equivalent counting technique.

b. 2 miles to 6.2 miles - b. Using referenced information from county agricultural agents or other reliable sources.

'Control (background) locations are denoted by a "C"in this column. All other location are indicators.

I-29

TABLE 5.0-2 (continued)

LASALLE COUNTY STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM, SAMPLE COLLECTION AND ANALYSES Location Collection Type of Frequency Sample Media Code' Site Frequency Analysis of Analysis II. LandUse Census (continued)

c. At dairies listed in Item 5. c. Inquire as to Annually during grazing feeding practices: season.

I. Pasture only.

2. Feed and chop only.

3. Pasture and feed:

if both, ask farmer to estimate fraction of food from pasture:

<25%, 25-50%,

50-75%, or >75%.

Nearest In all sectors up to 6.2 miles. Annually during grazing Residence season.

' Control (background) locations are denoted by a "C" in this column. All other location are indicators.

I-30

Table 5.0-3 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM QUARTERLY

SUMMARY

Name of Facility LaSalle Nuclear Power Station Docket No. 50-373. 50-374 Location of Facility LaSalleCount. llinois Reporting Period Ist Ouarter 2002 (County, State)

Sample Type and Indicator Location ith Highest Control Number of Type Number of Locations Highest Meana Locations Non-routine (Units) Analyses LLD Meana Quarterly Mean Range Meana Results Range Range Air Gross 65 0.01 0.029 (52/52) L-01. Nearsite No. 1 0.030 (13/13) 0.030 (13/13) 0 Particulates Beta (0.016-0.045) 1.5 mi. NNW, Sector R (0.018-0.042) (0.015-0.048)

(pCi/m 3 ) Gamma Spec. 5 Cs-134 0.01 <LLD <LLD 0 Cs-137 0.01 <LLD <LLD 0 Other Gammas 0.01-0.04 <LLD _ ._. <LLD 0 Airbome 1-131 35 0.07 <LLD <LLD 0 Iodine (pCi/m )

3 Milk 1-131 3 5 None - - <LLD 0 (pCi/L)

Gamma Spec. 3 Cs-134 15 None - - <LLD 0 Cs-137 18 None - - <LLD 0 BalLa-140 15 None - - <LLD 0 Other Gammas 10-15 None - - <LLD 0 Surface Water Gross Beta 6 4 4.6 (3/3) L40, Illinois River 4.6 (3/3) 4.5 (2/3) 0 (pCi/L) (4.2-5.3) Downstream (4.2-5.3) (4.2-4.8) 5.2 mi. NNW, Sector Gamma Spec. 6 R Cs-134 15 <LLD <LLD 0 Cs-137 18 <LLD <LLD 0 Other ODCM-Required 15-30 <LLD <LLD 0 Gammas Tritium 2 200 286 (1/1) 286 (1/1) <LLD 0 L-40, linois River Downstream 5.2 mi. NNW, Sector Well Water Tritium 2 200 <LLD - None 0 (pCi/L)

Gamma Spec. 2 Cs-134 15 <LLD - None 0 Cs-137 18 <LLD - None 0 Other ODCM-Required 15-30 <LLD - None 0 Gammas Gamma Gamma Dose 84 9.7 25.1 (82/82) L-210-2, 3.3 mi. SW 31.0 (1/1) 23.5 (2/2) 0 Background (21.0-31.0) Sector L (23.0-24.0)

(TLDs)

(mR/Qtr.)

a Miean and range based on detectable measurements only. Fractions indicated in parentheses.

b Locations L-01 and L-10 (C) had identical means of 0.030 pCi/m. Both are detailed in this summary.

I - 31

Table 5.0-4 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM QUARTERLY

SUMMARY

Name of Facility LaSalle Nuclear Power Station Docket No. 50-373. 50-374 Location of Facility LaSalle Countv, Illinois Reporting Period 2nd Ouarter 2002 (County, State)

Sample Type and Indicator Location with Highest Highest Control Number of Type Number of Locations Quarterly Mean Meana Locations Non-routine (Units) Analyses LLD Meana Range Mean a Results Range Range Air Gross 65 0.01 0.021 (52/52) L-06 NearsiteNo. 6 0.023 (13/13) 0.021 (13113) 0 Particulates Beta (0.011-0.036) 04 mi. WSW, Sector M (0.012-0.036) (0.012-0.033)

(pCVm 3 ) Gamma Spec. 5 Cs-134 0.01 <LLD <LLD 0 Cs-137 0.01 <LLD <LLD 0 Other Gammas 0.01-0.04 <LLD <LLD 0 Airbome Iodine 1-131 30 0.07 <LLD - - <LLD 0 (pCi/m3 )

Milk 1-131 6 0 515 b None - - <LLD 0 (pCi/L)

Gamma Spec. 6 Cs-134 15 None - - <LLD 0 Cs-137 18 None - - <LLD 0 Ba/La-140 15 None - - <LLD 0 Other Gammas 10-15 None  : <LD 0 Fish Gamma Spec. 4 (pCvg wet)

Cs-134 0.10 <LLD - - <LLD 0 Cs-137 0.10 <LLD - - <LL 0 Other ODCM-Required 0.13-0.26 <LLD - - <LLD 0 Gammas Other Gammas 0.20-0.30 <LLD - - <LD 0 Bottom Gamma Spec. 2 Sediments (pCi/g dry) Cs-134 0.15 <LLD None 0 Cs-137 0.18 <LLD None 0 Other Gammas 0.10-0.60 <LLD None 0 a Mean and range based on detectable measurements only. Fractions indicated in parentheses.

b 0.5 pCiVL (Nay-October); 5.0 pCiVL (November-April)

I - 32

Table 5.0-4 (continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM QUARTERLY

SUMMARY

Name of Facility LaSalle Nuclear Power Station Docket No. 50-373. 50-374 Location of Facility LaSalle County. Illinois Reporting Period 2nd Ouarter 2002 (County, State)

Sample Type and Indicator Location with Highest Control Number of Type Number of Locations Highest Meana Locations Non-routine (Units) Analyses LLD Mena Quarterly Mean l Rnge Meana Results Range Range Surface Water Gross Beta 6 4 4.8 (3/3) L40, Illinois River 4.8 (3/3) 4.2 (3/3) 0 (pCi/L) (4.2-5.8) Downstream (4.2-5.8) (4.04.5) 5.2 mi. NNW, Sector Gamma Spec. 6 R Cs-134 15 <LLD - <LLD 0 Cs-137 18 <LLD - <LLD 0 Other ODCM-Required 15-30 <LLD - <LLD 0 Gammas Tritium 2 200 <LLD - - <LLD 0 Well Water Tritium 2 200 <LLD - None 0 (pCi/L)

Gamma Spec. 2 Cs-134 15 <LLD - - None 0 Cs-137 18 <LLD - None 0 Other ODCM-Required 15-30 <LLD - None 0 Gamnas Gamma Gamma Dose 84 9.7 23.1 (82/82) L-209-2 31.0 (1/1) 20.5 (2/2) 0 Background (18.0-31.0) 4.0 mi. SSW, Sector K (19.0-22.0)

(TLDs)

(mR/Qtr.)

a Mean and range based on detectable measurements only. Fractions indicated in parentheses.

I - 33

Table 5.0-5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM QUARTERLY

SUMMARY

Name of Facility LaSalle Nuclear Power Station Docket No. 50-373. 50-374 Location of Facility LaSalle Countv. Illinois Reporting Period 3rd Ouarter 2002 (County, State)

Sample Type and Indicator Location with Highest Control Number of Type Number of Locations Highest Meana Locations Non-routine (Units) Analyses LLD Meana Quarterly Mean Range Meana Results Range Range Air Particulates Gross Beta 65 0.01 0.027 (52/52) L-03b, Onsite No. 3, 0.028 (13/13) 0.028 (13/13) 0 (pCi/m 3 ) (0.017-0.038) 1.0 mi. ENE, Sector D

(0.022-0.034) (0.020-0.037)

Gamma Spec. 5 Cs-134 0.01 <LLD - - <LLD 0 Cs-137 0.01 <LLD - <LLD 0 Other Gammas 0.01-0.04 <LLD - - <LLD 0 Airbome Iodine 1-131 35 0.07 <LLD - - <LLD 0 (pCi/m 3) . -

Milk 1-131 6 0.5 None - - <LLD 0 (pCi/L)

Gamma Spec. 6 Cs-134 15 None - - <LLD 0 Cs-137 18 None - - <LLD 0 Ba/La-140 15 None - - <LLD 0 Other Gammas 10-15 None - - <LLD 0 Vegetation -131 10 0.06 <LLD -

(pCi/g wet) <LLD 0 Gamma Spec. 10 Cs-134 0.06 <LLD - - <LLD 0 Cs-137 0.08 <LLD - - <LLD 0 Other Gammas 0.01-0.10 <LLD - <LLD 0 Surface Water Gross Beta 6 4 6.1 (3/3) L-40, Illinois River 6.1 (3/3) 5.7 (3/3) 0 (pCi/L) (5.2-7.3) Downstream (5.2-7.3) (5.3-6.1) 6 4.0 mi. NNW, Sector Gamma Spec. R Cs-134 10 <LLD <LLD 0 Cs-137 10 <LLD <LLD 0 Other ODCM-Required 20 <LLD <LLD 0 Gammas 2

Tritium 200 448 (1/1) L-40, Illinois River 448 (1/1) 350 (1/1)

Downstream 0 4.0 mi NNW, Sector R

a Mean and range based on detectable measurements only. Fractions indicated in parentheses.

bLocations L-03 and L-10 (C) had identical means of 0.028 pCi/m3. Both are detailed in this summary.

I - 34

Table 5.0-5 (continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM QUARTERLY

SUMMARY

Name of Facility LaSalle Nuclear Power Station Docket No. 50-373. 50-374 Location of Facility LaSalle County. Illinois ReportingPeriod 3rdOuarter 2002 (County, State)

Sample Type and Indicator Location with Highest Highest Control Number of Type Number of Locations Quarterly Mean - Meana Locations Non-routine (Units) Analyses LLD Meana Range Meana Results Range Range Well Water Tritium 2 200 <LLD None 0 (pCi/L)

Gamma Spec. 2 Cs-134 15 <LLD None 0 Cs-137 18 <LLD None 0 Other ODCM-Required 15-30 <LLD None 0 Gammas Gamma Gamma Dose 84 9.7 22.3 (82/82) L-105-2b, 0.7 mi E, 26.0 (1/1) 19.5 (2/2) 0 Background (15-26) Sector E (19-20)

(TLDs)

(mRlQtr.)

a Mean and range based on detectable measurements only. Fractions indicated in parentheses.

b L-105-2 and L-210-1 had identical means of 26.0 mR. Only L-105-2 is detailed in this summary.

I - 35

Table 5.0-6 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM QUARTERLY

SUMMARY

Name of Facility LaSalle Nuclear Power Station DocketNo. 50-373. 50-374 Location of Facility LaSalle County. Illinois Reporting Period 4th Ouarter 2002 (County, State)

Sample Type and Indicator Location with Highest Control Number of Type Number of Locations Highest Meana Locations Non-routine (Units) Analyses LLD Meana Quarterly Mean_ Range . Meana Results Range Range Air Particulates Gross Beta 65 0.01 0.031 (52/52) L-10, Streator, 0.034 (13/13) 0.034 (13/13) 0 (pCi/m3) (0.015-0.052) 13.5 mi. SW, Sector L (0.020-0.053) (0.020-0.053)

Gamma Spec. 5 Cs-134 0.01 <LLD - - <LLD 0 Cs-137 0.01 <LLD - - <LLD 0 Other Gammas 0.01-0.04 <LLD - - <LLD 0 Airbome Iodine 1-131 30 0.07 <LLD - - <LLD 0 (pCi/m 3 )

Milk 1-131 5 0 515 b None - - <LLD 0 KUCiL)

Gamma Spec. 5 Cs-134 15 None - <LLD 0 Cs-137 18 None - - <LLD -0 BalLa-140 15 None - <LLD 0 Other Gammas 10-15 None - <LLD 0 Fish Gamma Spec. 4 (pCi/g wet) Cs-134 0.10 <LLD <LLD 0 Cs-137 0.10 <LLD - <LLD 0 Other ODCM- 0.13-0.26 <LLD - <LLD 0 Required ammas 0.20-0.30 <LLD - <LLD 0 Other Gammas Bottom Gamma Spec. 2 Sediments (pCi/g dry) Cs-134 0.15 <LLD None 0 Cs-137 0.18 <LLD None 0 Other Gammas 0.10- <LLD None 0 0.60 a Mean and range based on detectable measurements only. Fractions indicated in parentheses.

b 0.5 pCi/L (May-October); 5 pCiVL (November-April)

I - 36

Table 5.0-6 (continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM QUARTERLY

SUMMARY

NameofFacility LaSalleNuclearPowerStation DocketNo. 50-373. 50-374 Location of Facility LaSalleCountv. Illinois Reporting Period 4th Ouarter 2002 (County, State)

Sample Type and Indicator Location with Highest Highest Control Number of Type Number of Locations Quarterly Mean-l Meana Locations Non-routine (Units) Analyses LLD Meana Range Meana Results Range Range Surface Water Gross Beta 6 4 6.5 (3/3) L-2 1, Illinois River at 6.9 (3/3) 6.9 (3/3) 0 (pCi/L) (5.3-7.4) Seneca, 4.0 mi. NE, (5.6-8.4) (5.6-8.4)

Gamma Spec. 6 Sector C Cs-134 15 <LLD <LLD 0 Cs-137 18 <LLD <LLD 0 Other ODCM-Required 15-30 <LLD <LLD 0 Gammas Tritium 2 200 827 (11) L-40, Illinois 827 (1/1) 702 (1/1) 0 Downstream, 4.0 mi.

NNW, Sector R Well Vater Gamma Spec. 2 (pCi/L)

Cs-134 15 <LLD None 0 Cs-137 18 <LLD None 0 Other ODCM-Required 15-30 <LLD . None 0 Ganmas Tritium 2 200 <LLD None 0 Gamma Gamma Dose 84 9.7 24.8 (82/82) L-204-1 29.0 (1/1) 21.5 (2/2) 0 Background (20.0-29.0) 3.2 mi. ENE, Sector D (21.0-22.0)

(TLDs)

(mR/Qtr.)

a Mean and range based on detectable measurements only. Fractions indicated in parentheses.

I - 37

LASALLE APPENDIX II METEOROLOGICAL DATA

-1

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Extremely Unstable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 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 6 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 II -2

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Moderately Unstable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 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 0 13 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 II- 3

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Slightly Unstable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

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

- -___-__7 N 0 0 0 NNE 0 0 0 NE 0 0 1 ENE 0 0 1 E 0 0 0 ESE 0 0 0 SE 0 1 3 SSE 0 0 5 S 3 1 6 SSW 0 0 2 SW 0 I 0 7 3 0 11 WSW 0 0 4 4 3 0 11 W 0 0 0 1 1 1 3 0 0 1 4 2 0 7 NW 0 0 0 2 0 0 2 0 0 0 0 0 1 1 Variable 0 0 0 0 0 0 0 Total 0 8 8 21 12 4 53 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

-4

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Neutral - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 20 37 15 5 0 78 NNE 14 19 3 0 0 37 NE 2 20 26 21 3 72 ENE 3 22 25 7 0 57 E 3 13 11 2 0 29 ESE 2 2 4 2 0 10 SE 0 2 4 0 1 8 SSE 4 1 10 4 2 21 S 3 3 14 17 2 39 SSW 2 7 33 13 0 57 SW 4 7 21 12 1 48 WSW 3 17 23 3 1 48 W 10 25 34 24 14 107 WNW 7 11 49 28 1 96 NW 10 20 17 21 4 72 NNW 8 29 51 13 4 105 Variable 0 0 0 0 0 0 Total 9 95 235 340 172 33 884 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 II - 5

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Slightly Stable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 15- 9 2 0 0 27 NNE 1 1 2 0 0 0 4 NE 0 5 2 0 0 0 7 ENE 0 0 2 2 1 0 5 E 0 8 14 7 0 0 29 ESE 1 6 2 0 0 0 9 SE 0 4 10 5 0 0 19 SSE 2 4 6 17 1 0 30 S 1 8 8 32 18 10 77 SSW 1 0 12 36 12 5 66 SW 1 10 12 30 12 2 67 WSW 1 5 16 23 3 0 48 W 0 4 14 16 15 10 59 WNW 0 3 16 19 27 7 72 NW 2 6 12 6 1 1 28 NNW 0 10 15 5 1 0 31 Variable 0 0 0 0 0 0 0 Total 11 89 152 200 91 35 578 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 II - 6

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Moderately Stable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 0 0 0 0 2 NNE 0 0 0 0 0 0 0 NE 1 0 0 0 0 0 1 ENE 0 4 0 0 0 0 4 E 0 1 1 0 0 0 2 ESE 2 0 0 0 0 0 2 SE 1 5 2 0 0 0 8 SSE 1 1 12 8 0 0 22 S 0 3 15 9 2 0 29 SSW 1 7 12 16 5 0 41 SW 0 5 51 59 6 0 121 WSW 2 8 48 21 1 0 80 w 2 3 17 1 0 0 23 WNW 0 14 9 0 1 1 25 NW 0 9 7 0 0 0 16 NNW 0 4 0 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 10 66 174 114 15 1 380 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 II - 7

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Extremely Stable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 S-12 13-18 19-24 > 24 Total N 1 0 0 2 NNE 0 0 0 0 NE 0 0 0 0 ENE 0 0 0 0 E 0 0 0 2 ESE 4 7 0 11 SE 3 7 5 16 SSE 1 5 2 8 S 3 4 2 9 SSW 6 8 5 19 SW 4 59 17 80 WSW 4 28 9 41 w 3 30 1 34 WNW 12 1 0 14 NW 6 1 0 7 NNW 2 0 0 2 Variable 0 0 0 0 Total 5 49 150 41 0 0 245 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 II - 8

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Extremely Unstable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 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 0 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 II - 9

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Moderately Unstable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 NNE 0 0 NE 0 0 ENE 0 0 E 0 0 ESE 0 0 SE 0 0 SSE 0 0 S 0 0 SSW 0 0 SW 0 0 WSW 0 0 W 0 0 WNW 0 0 NW 0 0 NNW 0 0 Variable 0 0 Total 0 0 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 II - 10

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Slightly Unstable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 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----

N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 3 0 0 3 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 O O O O O O 0, SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 2 1 3 W 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 0 0 3 2 1 6 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 II- 11

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Neutral - 375Ft-33Ft Delta-T (F)

- Winds Measured at 375 Feet Wind Speed (in mph)

Wind DirectionL 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 19 41 25 9 98 NNE 4 12 15 2 0 33 NE 1 5 25 12 27 70 ENE 1 13 13 19 1 47 E 1 9 7 9 8 34 ESE 2 3 2 1 1 9 SE 1 1 4 1 3 10 SSE 5 5 5 11 5 31 S 2 4 1 12 41 61 SSW 4 2 5 32 16 59 SW 3 7 6 27 19 62 WSW 2 8 17 16 9 53 W 5 10 28 20 34 99 WNW 2 6 14 48 24 94 NW 8 14 21 26 - 39 108 NNW 8 7 20 28 15 78 Variable 0 0 0 0 0 0 Total 5 52 125 224 289 251 946 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 17 Hours of missing stability measurements in all stability classes: 0 11-12

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Slightly Stable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 4 6 7 8 1 26 NNE 1 3 8 5 0 0 17 NE 0 3 4 2 0 0 9 ENE 3 £ 4 3 0 2 18 E 1 2 4 4 5 6 22 ESE 1 0 2 2 6 1 12 SE 0 3 2 1 0 0 6 SSE 1 3 1 2 7 8 22 S 0 3 3 3 1 58 68 SSW 1 1 4 4 13 67 90 SW 0 2 2 6 12. 65 87 WSW 1 1 5 15 20 28 70 W 0 1 4 15 9 51 80 0 1 2 4 16 61 84 NW 1 0 6 20 10 14 51 NNW 3 0 3 10 5 4 25 Variable 0 0 0 0 0 0 0 Total 13 33 60 103 112 366 687 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: 0 11 - 13

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Moderately Stable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

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

N 3 1 0 4 NNE 0 0 0 3 NE 0 0 0 3 ENE 0 0 0 1 E 0 0 0 1 ESE 0 0 1 1 SE 2 1 0 6 SSE 1 6 9 19 S 0 1 24 26 SSW 5 3 17 28 SW 3 7 92 106 WSW 8 17 65 90 W 6 24 28 59 WNW 12 21 5 42 NW 19 6 2 30 NNW 3 2 0 8 Variable 0 0 0 0 Total 2 10 21 62 89 243 427 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 II- 14

LaSalle Nuclear Station Period of Record: January - March 2002 Stability Class - Extremely Stable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N. 0 0 0

NNE 0 0 0

NE 0 0 0

ENE 0 0 0

E _ 0 0 0

ESE 0 0 0

SE 1 1 0

SSE 5 7 0

S 7 11 0

SSW 0 0 SW 0 0 0 3 3 11 17 WSW 0 1 0 2 5 8 16 W 0 1 0 0 7 3 11 0 0 1 0 2 5 8 NW 0 2 1 1 0 0 4 NNW 1 1 0 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 1 5 3 9 19 40 77 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 II- 15

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Extremely Unstable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 NNE 0 0 NE 0 0 ENE 0 1 E 0 0 ESE 0 0 SE 0 0 SSE 0 0 S 0 8 SSW 0 20 SW 0 5 WSW 0 0 W 0 0 WNW 0 0 NV 0 0 NNW 0 0 Variable 0 0 Total 0 0 0 11 17 6 34 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 II - 16

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Moderately Unstable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 NNE 1 N'E 4 ENE .1 E 2 ESE 1 SE 1 SSE 1 S 3 SSW 22 SW 9 WSW 12 W 6 WNW 10 NW 4 NNW 1 Variable 0 Total 0 2 16 43 16 1 78 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 1-17

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Slightly Unstable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph).

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 0 0 0 2 NNE 2 0 0 0 3 NE 7 4 0 0 11 ENE 1 2 0 0 4 E 0 1 0 0 1 ESE 1 0 0 0 2 SE 5 3 0 0 10 SSE 6 6 0 0 14 S 4 4 3 0 11 SSW 7 2 3 1 17 SW 10 4 0 0 17 WSW 13 4 2 0 21 W 5 6 1 0 13 WNW 4 10 7 0 25 NW 3 1 1 0 5 NNW 3 5 0 0 8

( Variable 0 0 0 0 0 Total 0 21 73 52 17 1 164 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 H1-18

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Neutral - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 19 13 12 2 0 48 NNE 2 21 14 6 0 0 43 ENE 1 13 26 52 6 0 98 ENE 3 12 14 18 5 0 52 E 0 16 18 16 9 3 62 ESE 3 12 9 14 12 0 50 SE 0 5 7 2 4 0 18 SSE 0 10 6 13 0 0 29 S 1 13 29 18 4 0 65 SSW 0 8 19 13 12 5 57 SW 4 12 24 12 2 0 54 WSW 2 9 20 14 1 0 46 W 0 7 23 10 2 1 43 WNW 0 5 34 24 15 11 89 NW 2 12 30 18 9 1 72 NNW 1 22 44 32 0 0 99 Variable 0 0 0 0 0 0 0 Total 21 196 330 274 83 21 925 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 1-19

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Slightly Stable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 9 1 0 0 0 11 NNE 3 11 1 0 0 0 15 NE 1 4 5 3 0 0 13 ENE 1 3 14 6 0 0 24 E 1 10 28 16 1 0 56 ESE 2 7 11 3 0 0 23 SE 0 4 9 0 0 0 13 SSE 1 7 5 5 0 0 18 S 3 5 20 21 3 0 52 SSW 3 5 1 28 11 0 48 SW 1 15 19 24 1 0 60 WSW 1 5 14 9 1 2 32 W 2 11 21 2 2 3 41 WNW 0 15 7 3 9 5 39 NW 2 11 11 5 3 1 33 NNW 0 6 7 0 0 0 13 Variable 0 0 0 0 0 0 0 Total 22 128 174 125 31 11 491 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 11-20

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Moderately Stable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 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 3 NNE 0 1 0 0 0 1 NE 2 0 0 0 0 2 ENE 0 1 0 0 0 1 E 1 8 8 0 0 17 ESE 0 10 4 0 0 14 SE 0 19 7 0 0 26 SSE 1 9 20 4 0 34 S 2 10 7 8 0 27 SSW 1 12 14 19 0 46 SW 0 14 18 5 0 37 WSW 1 11 12 0 0 24 W 0 14 11 1 0 26 WNW 0 14 3 0 0 17 NW 0 6 1 0 0 7 NNW 2 4 0 0 0 6 Variable 0 0 0 0 0 0 Total 10 136 105 37 0 288 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 -21

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Extremely Stable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 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 0 0 0 0 0 0 0 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 3 1 0 0 0 4 SE 0 6 8 0 0 0 14 SSE 1 16 17 0 34 S 0 19 11 0 30 SSW 0 21 18 0 40 SW 0 15 16 0 33 WSW 0 9 24 0 33 W 0 2 6 0 8 0 3 0 0 3 NW 0 0 0 0 0 0 0 0 0 0 Variable 0 0 0 0 0 Total 1 94 101 0 199 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 II -22

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Extremely Unstable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 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 0 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: 5 U1-23

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Moderately Unstable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 NNE 0 0 0 NE 0 0 0 ENE 0 0 0 E 0 0 0 ESE 0 0 0 SE 0 0 0 SSE 0 0 0 S 0 0 1 SSW 0 1 1 SW 0 2 2 WSW 0 0 0 W 0 0 0 WNW 0 0 0 NW 0 0 0 NNW 0 0 0 Variable 0 0 0 Total 0 3 4 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: 5 II- 24

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Slightly Unstable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 NNE 0 0 NE 0 0 ENE 0 0 E 0 0 ESE 0 0 SE 0 0 SSE 0 0 S 1 5 SSW 11 16 SW 1 3 WSW 0 0 W 0 0 WNW 0 0 NW 1 1 NNW 0 0 Variable 0 0 Total 0 0 0 0 12 14 26 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: 5 11-25

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Neutral - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 11 14 5 18 3 52 NNE 1 13 21 7 8 0 50 NE 0 11 14 41 39 16 121 ENE 2 14 7 26 24 5 78 E 2 16 5 13 12 11 59 ESE 0 6 2 7 10 16 41 SE 0 5 12 6 6 6 35 SSE 0 6 13 16 7 2 44 S 1 6 31 15 20 12 85 SSW 0 4 20 20 18 36 98 SW 0 8 17 25 15 9 74 WSW 4 5 29 25 20 4 87 W 0 2 10 24 14 6 56 WNW 1 2 12 43 25 28 111 NW 0 4 23 45 23 24 119 NNW 0 7 29 29 18 3 86 Variable 0 0 0 0 0 0 0 Total 12 120 259 347 277 181 1196 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: 5 I - 26

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Slightly Stable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 4 12 6 2 0 24 NNE 0 4 4 6 0 0 14 NE 1 8 8 1 1 0 19 ENE 1 3 10 5 3 0 22 E 2 2 7 9 14 2 36 ESE 1 3 7 6 14 7 38 SE 0 3 8 5 8 3 27 SSE 1 1 5 9 6 2 24 S 1 6 3 8 8 18 44 SSW 1 2 4 6 9 57 79 SW 0 4 4 16 16 30 70 WSW 0 4 10 14 10 16 54 W 1 3 4 11 11 6 36 WNW 0 2 4 13 12 9 40 NW 1 3 5 6 11 8 34 NNW 0 0 2 4 8 0 14 Variable 0 0 0 0 0 0 0 Total 10 52 97 125 133 158 575 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: 5 II-27

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Moderately Stable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 2 0 0 2 NNE 0 0 0 0 0 0 0 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 1 3 2 1 7 SE 0 0 3 5 4 7 19 SSE 0 1 7 11 5 15 39 S 0 0 4 4 8 20 36 SSW 0 2 8 11 3 25 49 SW 0 1 6 11 19 12 49 WSW 0 3 4 10 13 5 35 W 0 1 2 3 13 11 30 WNW 0 0 3 5 7 2 17 NW 0 0 3 3 4 0 10 NNW 0 0 3 4 2 0 9 Variable 0 0 0 0 0 0 0 Total 0 9 44 72 80 98 303 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: 5 II-28

LaSalle Nuclear Station Period of Record: April - June 2002 Stability Class - Extremely Stable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 NNE 0 0 0 NE 0 0 0 ENE 0 0 0 E 0 0 0 ESE O 0 1 SE 0 1 2 SSE 0 2 5 S 3 16 26 SSW 5 3 17 SW 1 0 2 WSW 4 6 14 W 3 0 6 WNW 0 0 0 NW 0 0 1 NNW 0 0 0 Variable 0 0 0 Total 0 3 11 16 16 28 74 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: 5 II - 29

LaSalle Nuclear Station Period of Record: July - September 2002 Stability Class - Extremely Unstable - 200Ft-33Ft Delta-T (F)

I Winds Measured at 33 Feet Wind Speed (in mph)

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

NNE 0 0 0

NE 0 5 0

ENE 0 6 0

E 0 0 0

ESE 0 0 0

SE 0 0 0

SSE 0 0 0

S 0 0 0

SSW 0 12 0

SW 0 8 WSW 0 0 15 3 0 0 18 W 0 0 9 2 0 0 11 0 0 0 2 0 0 2 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0

-Total 0 2 40 21 I 0 64 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

-30

LaSalle Nuclear Station Period of Record: July - September 2002 Stability Class - Moderately Unstable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 NNE 3 8 NE 6 8 ENE 17 21 E 2 3 ESE 0 3 SE 1 2 SSE 2 4 S 2 6 SSW 8 16 SW 9 17 WSW 10 12 W 11 14 WNW 4 6 NW 1 1 NNW 0 2 Variable 0 0 Total 0 27 76 20 1 0 124 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 II - 31

LaSalle Nuclear Station Period of Record: July - September 2002 Stability Class - Slightly Unstablle - 200Ft-33Ft Delta-T (F)

Winds Measured att 33 Feet Wind Speesd (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 0 0 2 NNE 0 5 1 0 6 NE 0 6 3 0 9 ENE 0 6 9 0 16 E 0 10 11 0 25 ESE 0 4 1 0 5 SE 0 1 5 0 6 SSE 0 5 2 0 7 S 0 10 5 0 17 SSW 0 8 4 0 17 SW 0 5 9 0 19 WSW 0 9 9 0 21 W 0 10 4 0 16 WNW 0 6 6 0 14 NW 0 1 0 0 1 NNW 0 2 1 0 3 Variable 0 0 0 o 0 Total 0 90 70 24 0 184 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stab:ility class: 0 Hours of missing stability measurements in all stability classes: 0 II-32

LaSalle Nuclear Station Period of Record: July - September 2002 Stability Class - Neutral - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 18 16 4 0 42 NNE 1 20 11 0 0 32 NE 1 10 25 15 0 51 ENE 1 9 13 13 0 36 E 1 10 18 8 0 37 ESE 3 13 6 0 0 22 SE 0 23 6 0 0 29 SSE 3 13 8 0 0 24 S 2 9 13 5 0 29 SSW 0 7 23 13 0 43 SW 0 22 '26 15 0 64 WSW 1 18 19 7 0 45 W 1 21 15 2 0 39 WNW 1 18 9 4 0 32 NW 0 7 4 0 0 11 NNW 1 6 6 4 0 17 Variable 0 0 0 0 0 0 Total 20 224 218 90 0 553 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 II-33

LaSalle Nuclear Station Period of Record: July - September 2002 Stability Class - Slightly Stable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 4 10 2 0 0 17 NNE 3 22 3 0 0 0 28 NE 1 8 22 3 0 0 34 ENE 1 7 27 9 0 0 44 E 1 17 24 4 0 0 46 ESE 1 10 1 0 0 0 12 SE 2 5 4 0 0 0 11 SSE .2 5 4 0 0 0 11 S 1 10 15 2 0 0 28 SSW 0 6 33 4 0 0 43 SW 2 12 31 10 0 0 55 WSW 0 9 13 2 0 0 24 W 0 5 5 0 0 0 10 0 9 5 0 0 0 14 NW 0 7 3 0 0 0 10 0 5 9 1 0 0 15 Variable 0 0 0 0 0 0 0 Total 15 141 209 37 0 0 402 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 II-34

LaSalle Nuclear Station Period of Record:..July - September 2002 Stability Class - Moderately Stabl e - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Spee d (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 1 0 0 2 NNE 2 11 0 0 13 NE 0 1 1 0 2 ENE 0 0 0 0 0 E 1 22 21 0 44 ESE 0 24 1 0 25 SE 0 11 1 0 12 SSE 0 13 3 0 16 S 2 27 19 0 49 SSW 1 21 19 0 41 SW 1 25 5 0 31 WSW 1 11 5 0 17 W 6 4 0 0 10 WNW 1 7 0 0 8 NW 1 5 0 0 6 NNW 1 3 0 0 4 Variable o 0 0 0 0 Total 18 186 75 0 280 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 11- 35

LaSalle Nuclear Station Period of Record: July - September 2002 Stability Class - Extremely Stable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 1 0 0 2 NNE 0 1 0 0 1 NE 1 0 0 0 1 ENE 0 1 0 0 1 E 2 9 2 0 13 ESE 2 29 3 0 34 SE 3 18 0 0 21 SSE 1 32 2 0 35 S 0 20 6 0 26 SSW 1 28 4 0 33 SW 2 37 9 0 ' 48 WSW 5 31 1 0 37 W 7 15 1 0 23 WNW 3 17 0 0 20 NW 3 2 0 0 5 NNW -4 1 0 0 S Variable 0 0 0 0 0 Total 35 242 28 0 305 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 Uf-36

LaSalle Nuclear Station Period of Record: July - September 2002 Stability Class - Extremely Unstable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0

NNE 0 0 0

NE 0 0 0

ENE 0 0 0

E 0 0 0

ESE 0 0 0

SE 0 0 0

SSE 0 0 0

S _

0 0 0

SSW 0 0 0

SW 0 0 0

WSW 0 0 0

W 0 0 0

WNW 0 0 0

NW 0 0 0

NNW 0 0 0

Variable 0 0 0

Total 0 0 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 11-37

LaSalle Nuclear Station Period of Record: July - September 2002 Stability Class - Moderately Unstable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0

NNE 0 0 0

NE 0 0 0

ENE 0 0 0

E 0 0 0

ESE 0 0 0

SE 0 0 0

SSE 0 0 0

S _

0 0 0

SSW 0 0 0

SW 0 0 0

WSW 0 1 0

W 0 1 0

WNW 0 0 0

NW 0 0 0

NNW 0 0 0

Variable 0 0 0

Total 0 2 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 11-38

LaSalle Nuclear Station Period of Record: July - September 2002 Stability Class - Slightly Unstable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 2 NNE 0 0 0 NE 0 4 5 ENE 0 4 7 E 0 0 2 ESE 0 0 0 SE 0 0 0 SSE 0 0 0 S 0 0 0 SSW 0 0 6 SW 0 1 7 WSW 0 12 13 W 0 5 8 WNW 0 1 1 NW 0 1 1 NNW 0 0 0 Variable 0 0 0 Total 0 0 15 28 7 2 52 Hours of calm in this stabilit-y class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 1-39

LaSalle Nuclear Station Period of Record: July - September 2002 Stability Class - Neutral - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 11 20 10 8 1 50 NNE 1 13 33 13 0 0 60 NE 0 16 20 33 22 0 91 ENE 1 15 38 42 18 2 116 E 1 13 30 27 5 1 77 ESE 0 16 18 7 1 0 42 SE 0 17 14 4 1 0 36 SSE 1 15 14 3 2 0 35 S 0 17 16 14 11 5 63 SSW 1 16 15 21 27 8 88 SW 0 8 29 29 28 8 102 WSW 0 13 39 20 9 2 83 W 0 25 23 22 4 0 74 WNW 1 10 27 6 7 0 51 NW 0 8 18 4 1 0 31 NNW 0 6 10 6 2 3 27 Variable o 0 0 0 0 0 0 Total 6 219 364 261 146 30 1026 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 II -40

LaSalle Nuclear Station Period of Record: July - September 2002 Stability Class - Slightly Stable - 375Ft-33Ft Delta-T F)

Winds Measured at 375 Feet Wind Speed (in mph)

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

N 3 9 9 4 1 26 NNE 1 4 12 3 0 20 NE 4 3 25 10 0 43 ENE 3 17 59 9 0 88 E 2 16 21 18 2 59 ESE 2 10 11 3 0 26 SE 1 5 7 2 0 16 SSE 2 5 1 3 0 11 S 4 9 11 10 4 38 SSW 3 7 8 12 29 59 SW 3 4 11 22 26 66 WSW 2 11 13 9 3 38 w 4 6 5 3 0 20 WNW 4 0 9 2 0 15 NW 4 5 14 3 0 26 NNW 4 2 9 4 0 19 Variable 0 0 0 0 0 0 Total 4 46 113 225 117 65 570 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 H1-41

LaSalle Nuclear Station Period of Record: July - September 2002 Stability Class - Moderately Stable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 3 4 3 0 0 11 NNE 3 6 3 1 0 0 13 NE 0 3 1 2 0 0 6 ENE 0 5 7 7 0 0 19 E 1 3 6 ,6 10 2 28 ESE 0 3 7 7 13 1 31 SE 2 2 2 6 7 5 24 SSE 0 0 6 8 2 5 21 S 3 3 7 8 7 9 37 SSW 1 6 3 3 14 25 52 SW 0 5 10 6 20 18 59 WSW 0 9 9 8 7 8 41 W 0 5 7 6 6 0 24 WNW 0 8 12 16 5 0 41 NW 0 1 5 8 0 0 14 NNW 0 0 1 1 4 0 6 Variable 0 0 0 0 0 0 0 Total 11 62 90 96 95 73 427 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 II - 42

LaSalle Nuclear Station Period of Record: July - September 2002 Stability Class - Extremely Stable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 3 0 4 0

NNE 0 0 0 1 0

NE 0 0 o 0 0

ENE 0 0 o o 0

E 0 0 o 0 0

ESE 0 4 1 5 0

SE 9 3 0 13 SSE 1 20 9 2 34 S 4 2 6 6 21 SSW 0 1 10 1 13 SW 0 7 7 2 18 WSW 0 7 1 1 10 W 2 1 2 0 7 WNW 0 0 0 0 0 NW 0 3 0 0 4 NNW 0 0 1 0 1 Variable 0 0 0 o 0 Total 7 15 50 46 13 131 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 II - 43

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Extremely Unstable - 200Ft-33Ft Delta-T F)

Winds Measured at 33 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 0 4 Hours of calm in this stability class:

Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 H -44

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Moderately Unstable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 0 NNE 0 0 NE 0 0 ENE 0 0 E 0 0 ESE 0 0 SE 0 0 SSE 2 2 S 1 0 SSW 2 1 SW 3 0 WSW 0 2 W 0 1 WNW 0 3 NW 0 0 NNW 0 1 Variable 0 0 Total 11 10 0 25 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 II-45

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Slightly Unstable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 9 NNE 0 2 ENE 0 1 ENE 0 1 E 1 1 ESE 0 6 SE 0 0 SSE 0 4 S 0 1 SSW 4 6 SW 3 14 WSW 3 9 W 0 10 WNW 0 5 NW 0 9 NNW 0 12 Variable 0 0 Total 0 9 35 35 11 0 90 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 H1-46

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Neutral - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 30 46 8 2 0 87 NNE 30 37 0 0 0 70 NE 7 35 18 1 0 61 ENE 9 15 19 9 0 52 E 6 17 30 9 0 62 ESE 4 6 3 8 0 23 SE 2 2 1 0 0 5 SSE 2 1 4 1 1 9 S 1 0 6 2 2 11 SSW 4 9 7 6 0 28 SW 8 30 15 4 4 62 WSW 8 28 14 4 0 55 W 5 32 31 19 2 91 WNW 18 32 43 5 0 102 NW 8 30 23 6 2 70 NNW 17 57 41 10 3 128 Variable 0 0 0 0 0 0 Total 17 159 377 263 86 14 916 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 II - 47

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Slightly Stable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 37 15 0 0 0 53 NNE 30 3 0 0 0 33 NE 6 5 2 0 0 14 ENE 3 5 2 0 0 10 E 7 19 15 0 0 42 ESE 6 4 3 4 0 17 SE 5 5 4 2 0 18 SSE 3 3 2 1 2 12 S 3 15 22 7 2 50 SSW 8 21 18 13 0 61 SW 4 21 25 16 0 66 WSW 7 10 15 3 0 36 w 11 19 29 12 4 78 WNW 11 26 13 11 5 67 NW 13 17 3 0 0 35 NNW 13 16 0 0 0 29 Variable 0 0 0 0 0 0 Total 15 167 204 153 69 13 621 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 II - 48

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Moderately Stable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 0 0 0 0 4 NNE 4 0 0 0 0 4 NE 0 0 0 0 0 0 ENE 0 0 0 0 0 1 E 4 3 0 0 0 7 ESE 11 3 0 0 0 14 SE 6 2 0 0 0 8 SSE 5 2 1 0 0 8 S 3 7 5 2 0 17 SSW 6 11 7 1 0 25 SW 9 43 20 2 0 74 WSW 7 11 6 0* 0 26 W 11 29 8 0 0 49

. WNW is 3 0 0 0 18 NW 9 6 0 0 0 16 NNW 5 1 0 0 0 7 Variable 0 0 0 0 0 0 Total 8 97 121 47 5 0 278 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 I -49

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Extremely Stable - 200Ft-33Ft Delta-T (F)

Winds Measured at 33 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 0 0 0 0 0 ENE 0 0 0 0 0 E 0 11 2 0 13 ESE 0 8 7 0 15 SE 0 9 1 0 10 SSE 0 17 0 0 17 S 0 10 4 0 14 SSW 0 14 36 0 53 SW 2 19 36 0 57 WSW 0 3 38 0 44 W 1 12 15 0 28 WNW 0 13 4 0 17 NW 1 1 3 0 5 NNW 0 0 0 0 0 Variable o 0 0 0 0 Total 4 117 146 0 273 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 class;es: 0 II - 50

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Extremely Unstable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

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

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Moderately Unstable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 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 0 0 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 I -52

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Slightly Unstable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 NNE 0 NE 0 ENE 0 E 0 ESE 0 SE 0 SSE 0 S 0 SSW 0 SW 0 WSW 0 W 0 WNW 0 NW 0 NNW 0 Variable 0 Total 0 0 2 Hours of calm in this stability class: 0 Hours of missing wind measurements in this sI:ability class: 0 Hours of missing stability measurements in a:Li stability classes: 1 II - 53

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Neutral - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 13 42 38 14 3 ll NNE 0 6 25 31 3 0 65 NE 0 3 18 44 17 1 83 ENE 0 3 13 24 15 9 64 E 1 3 11 17 23 17 72 ESE 1 2 9 3 3 10 28 SE 0 0 3 2 1 0 6 SSE 0 3 3 6 5 3 20 S 0 0 0 3 1 9 13 SSW 0 2 9 12 4 14 41 SW 1 3 17 33 16 15 85 WSW 0 4 10 26 10 8 58 W 0 8 8 35 33 22 106 WNW 2 5 14 27 34 5 87 NW 1 9 22 32 42 20 126 NNW 1 7 24 29 28 14 103 Variable 0 0 0 0 0 0 0 Total 8 71 228 362 249 150 1068 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 II - 54

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Slightly Stable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 3 6 23 10 1 45 NNE 2 0 14 18 1 0 35 NE 0 3 10 14 4 0 31 ENE 1 0 5 1 1 0 8 E 0 2 9 6 7 4 28 ESE 0 1 5 5 2 4 17 SE 0 5 1 0 4 6 16 SSE 0 1 3 2 5 7 18 S 1 0 1 2 8 22 34 SSW 0 1 3 8 10 49 71 SW 0 5 2 8 21 51 87 WSW 0 1 6 6 4 17 34 W 0 1 1 L1 12 9 48 81 WNW 0 0 6 15 24 27 72 NW 0 0 4 12 26 6 48 0 4 7 14 8 2 35 Variable 0 0 0 0 0 0 0 Total 6 27 93 146 144 244 660 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 II-55

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Moderately Stable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 0 4 0 0 5 NNE 0 0 1 1 0 0 2 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 1 0 0 0 0 1 ESE 0 3 3 4 5 4 19 SE 0 0 2 3 8 3 16 SSE 0 0 4 3 1 4 12 S 0 1 2 4 2 4 13 SSW 0 1 5 8 10 17 41 SW 0 0 5 11 12 39 67 WSW 0 1 3 5 8 17 34 W 0 0 5 8 13 30 56 WNW 0 1 1 17 11 11 41 NW 0 0 5 9 10 0 24 NNW 0 0 6 9 1 0 16 Variable 0 0 0 0 0 0 0 Total 0 9 42 86 81 129 347 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes: 1 II - 56

LaSalle Nuclear Station Period of Record: October - December2002 Stability Class - Extremely Stable - 375Ft-33Ft Delta-T (F)

Winds Measured at 375 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 NNE 0 0 NE 0 0 ENE 0 0 E 0 0 ESE 0 2 SE 4 12 SSE 1 4 S 4 8 SSW 2 16 SW 7 27 WSW 21 36 W 1 8 WNW 2 9 NW 0 0 NNW 0 7 Variable 0 0 Total 0 5 18 25 39 42 129 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 11- 57

LASALLE APPENDIX III 2002 REMP SAMPLE RESULTS En- 1

LASALLE TABLE OF CONTENTS List of Tables ........................... III-3

1.0 INTRODUCTION

........................... III-4 2.0 LISTING OF MISSED SAMPLES ........................... III-5 3.0 LISTING OF SAMPLE ANOMALIES ........................... III-6 4.0 TLD DATA ........................... III-34 5.0 GRAPHS OF DATA TRENDS ............................ III-38 III-2

LASALLE LIST OF TABLES No. Title Page 1 Airborne Particulates and Iodine-131 . ........................................ IH-7 2 Airborne Particulates, Quarterly Composites ........... ....................... IH-12 3 Milk .................................................... I-15 4 Fish, Edible Portions ................................................. III-18 5 Bottom Sediments ................................................. III-20 6 Vegetables .............. ................................... III-21 7 Surface Water ................................................. III-24 8 Well Water .................. ................................. III-29 12 Milch Animals, Nearest Residence, and Nearest Livestock Census ............... III-30 III-3

LASALLE

1.0 INTRODUCTION

The following constitutes the 2002 Monthly Progress Report for the Radiological Environmental Monitoring Program conducted at the LaSalle County Station, Marseilles, Illinois. Results of completed analyses are presented in the attached tables. Missing entries indicate analyses that are not completed and the results will appear in subsequent reports.

Missing tables indicate sample media scheduled for collection at a future date. Tables will appear in subsequent reports.

Data obtained in the program are well within the ranges previously encountered in the program and to be expected in the environmental media sampled.

For all gamma isotopic analyses, spectrum is computer scanned from 80 to 2048 keV. Specifically included are Mn-54, Fe-59, Co-58, Co-60, Zn-65, Zr/Nb-95, I-131, BaALa-140, Cs-134 and Cs-137. Naturally occurring gamma-emitters, such as K-40 and Ra daughters, are frequently detected but not listed here. The data is reported in the format of x+/-2s;2TPU, where "x" is the significant result, "s" is the one standard deviation counting uncertainty, and TPU is the total propagated uncertainty at the one sigma confidence level.

Locations denoted by a "(C)" after site code refer to control locations.

All concentrations, except gross beta, are decay corrected to the time of collection.

TLD data is provided by Exelon Generation Company.

Deviations from Scheduled Sampling and Corrective Actions Taken All samples were collected within the scheduled period unless noted otherwise in the Listing of Missed Samples.

Unusual Environmental Measurements Sample Type Location Collection Comments Code Date None for 2002.

III.4

2.0 LISTING OF MISSED SAMPLES Location Expected Sample Type Code Collection Reason Date None for 2002.

III-5

LASALLE 3.0 LISTING OF SAMPLE ANOMALIES Sample Type Location Collection Reason Code Date A L-03 09-05-02 Sample collected on 09-06-02; collector denied access on 09-05-02 due to shipment of hot cast.

III-6

LASALLE Table 1. Airborne Particulates and Iodine Cartridges Collection: Air Particulates - Continuous; weekly exchange Iodine Cartridges - Continuous; biweekly exchange Required LLD: Gross Beta = 0.01, I-131 = 0.07 pCi/m3 Units: 10.2 pCi/m L-01 Nearsite No. 1 Date Volume Gross Date Volume Gross Collected (m3) Beta I-131' Collected (in) Beta I-131' 01-02-02 286 3.6 t 0.4; 0.8 0.3 +/- 0.4 ;0.4 07-04-02 283 3.2 +/- 0.4; 0.7 0.3 +/- 0.5 ;0.5 01-10-02 321 4.2+0.4;0.8 - 07-11-02 287 1.9 +/- 0.3; 0.5 -

01-17-02 281 2.4 +/- 0.4; 0.6 -0.2 + 0.4 ;0.4 07-18-02 282 3.1 +/-0.4;0.7 -0.5 0.4;0.4 01-24-02 284 3.6 +/- 0.4; 0.8 - 07-25-02 284 2.6 +/- 0.4; 0.6 -

01-31-02 286 2.4 +/- 0.4; 0.6 0.0 +/- 0.4 ;0.4 08-01-02 287 3.1+/-0.3;0.6 0.0+/-:0.5;0.5 02-06-02 249 4.1 +/- 0.4 ;0.8 - 08-08-02 297 2.5 +/- 0.3; 0.6 -

02-14-02 319 3.0 + 0.4; 0.7 -0.2 +/- 0.4 ;0.4 08-15-02 282 2.9 0.3; 0.6 0.5 0.3 ;0.4 02-21-02 282 1.8 0.3 ;0.4 - 08-22-02 277 2.0 4 0.3; 0.5 -

02-28-02 285 1.9 0.3 0.5 -0.7 4 0.5 0.5 08-29-02 284 2.2 +/- 0.3; 0.5 -0.3 +/- 0.3 ;0.3 03-07-02 287 3.9 + 0.4; 0.8 - 09-05-02 287 3.3 +/- 0.4; 0.7 -

03-14-02 283 3.2 0.4; 0.7 -0.1 0.5;0.5 09-12-02 295 3.4 +/- 0.4; 0.8 0.1 +/- 0.4 ;0.4 03-21-02 285 2.5 0.4 ;0.6 - 09-19-02 281 3.2 0.4; 0.7 -

03-27-02 249 2.6 4 0.4; 0.6 -0.8 +/- 0.5 ;0.5 09-26-02 300 1.9 +/-0.3 ;0.5 0.2+0.3 ;0.3 1st Qtr. Mean+/-s.d. 3.0 +0.8 -0.2i 0.4 3rd Qtr. Mean+/-s.d. 2.7 0.6 0.1 0.3 04-04-02 319 2.2 0.3;0.5 - 10-03-02 285 4.1 +/- 0.5 ; 0.9 -

04-11-02 289 2.8 +/- 0.3; 0.6 -0.2 +/- 0.4 ;0.4 10-10-02 287 2.4 +/- 0.4; 0.6 0.4 +/- 0.4 ;0.4 04-18-02 276 2.440.4;0.6 - 10-17-02 289 3.3 0.4; 0.7 -

04-25-02 284 1.9 4 0.3 0.4 0.4 +/- 0.4 ;0.4 10-24-02 288 2.4 +/- 0.4; 0.6 -0.1 + 0.4 ;0.4 05-02-02 290 1.9 +/- 0.3; 0.5 - 10-31-02 285 2.7+/-0.4;0.6 -

05-09-02 282 1.5 +0.3 ;0.4 0.0+/-0.5 ;0.5 11-07-02 287 4.6 +/- 0.5; 0.9 0.2 +/- 0.3 ;0.3 05-16-02 283 2.2 +0.3 ;0.5 11-14-02 289 3.7 0.4; 0.8 -

05-22-02 247 1.7 + 0.3 0.4 0.4+/-0.5 ;0.5 11-21-02 285 2.3 +/- 0.3; 0.5 -0.4 0.4 ;0.4 05-30-02 324 2.0 +/- 0.3; 0.5 11-27-02 244 1.9 0.3; 0.5 -

06-06-02 284 2.0 + 0.4; 0.5 0.1 + 0.3 ;0.3 12-05-02 326 2.6 0.3 0.6 -0.5+/-0.3 ;0.3 06-13-02 285 1.9 0.4; 0.5 - 12-12-02 282 3.8 0.4; 0.8 -

06-20-02 286 2.1 +/-0.3 ;0.5 -0.3+/-0.5;0.5 12-19-02 287 3.7 4 0.4; 0.8 0.6+/-0.3;0.3 06-27-02 288 2.9 +/- 0.4; 0.6 - 12-26-02 294 2.2 + 0.3; 0.5 -

2nd Qtr. Mean*s.d. 2.1 +0.4 0.1 0.3 4th Qtr. Mean+/-s.d. 3.1 +/-0.9 0.01 0.4

'Volume based on two week collection period.

III -7

LASALLE Table 1. Airborne Particulates and Iodine Cartridges Collection: Air Particulates - Continuous; weekly exchange Iodine Cartridges - Continuous; biweekly exchange Required LLD: Gross Beta = 0.01, I-131 = 0.07 pCi/m3 Units: 10.2 pCi/r 3 L-03 Onsite No. 3 Date Volume Gross Date Volume Gross Collected (ne) Beta I-131' Collected (ine) Beta I-131' 01-02-02 287 3.4+/-0.4;0.7 -0.5+0.5;0.5 07-04-02 282 2.9 +/- 0.3 0.6 -0. 1 +/- 0.4 ;0.4 01-10-02 321 4.0 0.4; 0.8 - 07-11-02 293 2.8 + 0.4; 0.6 -

01-17-02 280 2.4 + 0.4; 0.6 -0.3+/-0.4;0.4 07-18-02 283 3.0 +/- 0.4; 0.7 -0.0 0.4 ;0.4 01-24-02 280 3.2 +/- 0.4 0.7 - 07-25-02 284 2.4 +/- 0.4; 0.6 -

01-31-02 286 2.6 +/- 0.4; 0.6 -0.2 + 0.5 ;0.5 08-01-02 287 3.4 +/- 0.4; 0.7 -0.3+/- 0.4 ;0.4 02-06-02 253 3.5 + 0.4; 0.7 - 08-08-02 297 2.3 4 0.3; 0.5 -

02-14-02 324 3.1 i0.4;0.7 0.440.5;0.5 08-15-02 279 3.0 +/-0.4; 0.6 -0.6+/-0.3 ;0.3 02-21-02 287 1.7 +/- 0.3; 0.4 - 08-22-02 286 2.2 +/- 0.3; 0.5 -

02-28-02 284 1.6 +/- 0.3 0.4 0.8+/- 0.5 ;0.5 08-29-02 284 2.2 +/-0.3 0.5 -0.9 +0.4 ;0.4 03-07-02 287 3.4 + 0.4; 0.7 09-06-02 323 2.8 +/- 0.4; 0.6 -

03-14-02 283 2.9 +/- 0.4; 0.7 -0.2 +/- 0.3 ;0.3 09-12-02 243 3.4 0.5; 0.8 -0.2 + 0.3 ;0.3 03-21-02 285 2.1 +/-0.4 ;0.5 - 09-19-02 276 3.1 i 0.4; 0.7 -

03-27-02 249 2.7 +/- 0.4; 0.6 -0.5 +/- 0.4 ;0.4 09-26-02 290 2.4 0.4; 0.6 -0.1 0.3 ;0.3 1st Qtr. Mean*s.d. 2.8 +/-0.7 -0.1+/- 0.5 3rd Qtr. Mean+/-s.d. 2.8 +/-0.4 -0.3+/- 0.3 04-04-02 319 2.0 +/-0.3; 0.5 10-03-02 280 4.5 +/-0.5;0.9 -

04-11-02 288 2.4 +/- 0.3; 0.5 0.1 +/- 0.4 ;0.4 10-10-02 283 2.7 +/- 0.4; 0.6 -0.1 0.3 ;0.3 04-18-02 280 2.7 +/- 0.4; 0.6 - 10-17-02 289 3.2 4 0.4; 0.7 -

04-25-02 284 2.0 +/- 0.3; 0.5 0.2 +/- 0.5 ;0.5 10-24-02 284 2.3 +/- 0.4; 0.6 0.5 +/- 0.3 ;0.4 05-02-02 290 1.7 +/- 0.3 0.5 - 10-31-02 285 2.6+/-0.4;0.6 -

05-09-02 282 1.5 + 0.3 0.4 -0.4 +/- 0.5 ;0.5 11-07-02 287 4.6 +/- 0.5; 1.0 -0.1 +/- 0.3 ;0.3 05-16-02 283 2.4 40.3 ;0.5 - 11-14-02 284 4.2 0.5; 0.9 -

05-22-02 246 1.1 0.3 0.4 -0.7 +/- 0.4 ;0.5 11-21-02 285 2.3 +/- 0.3 ;0.5 0.2 0.4;0.4 05-30-02 324 2.0 +/- 0.3; 0.5 - 11-27-02 244 2.0 +/- 0.3; 0.5 -

06-06-02 285 2.1 +/-OA;0.5 -0.4+/-0.4;0.4 12-05-02 326 2.6 +/- 0.3 0.6 -0.4 0.4; 0.4 06-13-02 285 1.4 +/- 0.3; 0.4 - 12-12-02 277 4.0 0.4; 0.8 -

06-20-02 286 1.9 +/- 0.3; 0.5 -0.2+/- 0.4;0.4 12-19-02 287 3.8 + 0.4; 0.8 0.3+/-0.4;0.4 06-27-02 288 3.3 4 0.4; 0.7 12-26-02 290 2.0 +/- 0.3 0.5 -

2nd Qtr. Mean+/-s.d. 2.0 +/-0.6 -0.2+/- 0.3 4th Qtr. Mean+/-s.d. 3.2 +/-1.0 0.1+/- 0.3

'Volume based on two week collection period.

III - 8

LASALLE Table 1. Airbome Particulates and Iodine Cartridges Collection: Air Particulates - Continuous; weekly exchange Iodine Cartridges - Continuous; biweekly exchange Required LLD: Gross Beta = 0.01, I-131 = 0.07 pCi/m3 Units: 10.2 pCi/n L-05 Onsite Station No. 5 Date Volume Gross Date Volume Gross Collected (in) Beta I-1311 Collected (in3) Beta I-131' 01-02-02 288 3.5 + 0.4 ; 0.8 -0.1 + 0.6 ;0.6 07-04-02 283 3.1 + 0.4; 0.7 -0.1 +/-0.4 ;0.4 01-10-02 324 4.5 + 0.4; 0.9 07-11-02 288 2.0 + 0.4; 0.5 -

01-17-02 287 2.3 +/- 0.4; 0.6 0.2 +/- 0.4 ;0.4 07-18-02 284 3.0 4 0.4; 0.6 0.4+/- 0.4 ;0.4 01-24-02 280 3.0 40.4;0.7 07-25-02 283 2.4 +/- 0.4; 0.6 -

01-31-02 281 2.6 + 0.4; 0.6 0.2+/- 0.5 ;0.5 08-01-02 287 2.9 0.3; 0.6 0.1 + 0.4;0.4 02-06-02 246 4.1 +/-0.4 0.9 08-08-02 297 1.9 4 0.3; 0.5 -

02-14-02 322 2.9 +/- 0.4; 0.6 -0.4 + 0.5 ;0.5 08-15-02 282 3.0 +/- 0.4; 0.6 -0.2+/- 0.4 ;0.4 02-21-02 282 2.0 +/- 0.3; 0.5 - 08-22-02 274 2.2 +/- 0.3; 0.5 -

02-28-02 285 1.7 +/- 0.3; 0.4 -1.2 +/- 0.5 ;0.5 08-29-02 287 2.1 +/-0.3;0.5 -0.0+/-0.4;0.4 03-07-02 285 3.6 0.4; 0.8 - 09-05-02 284 3.1 +/-0.4;0.7 -

03-14-02 286 2.5 0.4;0.6 -0.2+/-0.3;0.3 09-12-02 300 3.8 +/- 0.4; 0.8 -0.1 +/- 0.3 ;0.3 03-21-02 285 1.9 0.3;0.5 - 09-19-02 276 3.4 4 0.4 0.7 -

03-27-02 246 2.8 +/- 0.4; 0.6 -0.8 +/- 0.6 ;0.6 09-26-02 292 2.2 0.4 ;0.5 0.2+/- 0.4 ;0.4 1st Qtr. Mean+/-s.d. 2.9 +/-0.9 -0.3+/- 0.5 3rd Qtr. Mean+/-s.d. 2.7 +/-0.6 0.0+/- 0.2 04-04-02 319 2.6 +/- 0.3; 0.6 10-03-02 281 4.2 4 0.5; 0.9 -

04-11-02 288 2.5 +/- 0.3; 0.6 -0.0+/- 0.4 ;0.4 10-10-02 282 2.8 0.4; 0.6 0.1 0.3 ;0.4 04-18-02 281 2.7+/-0.4;0.6 10-17-02 286 3.2 +/-0.4 ;0.7 -

04-25-02 285 1.7 +/- 0.3 0.4 -0.4+/-0.5 ;0.5 10-24-02 284 2.8 + 0.4; 0.6 -0.1 +/- 0.3 ;0.3 05-02-02 290 1.7 +/- 0.3; 0.4 - 10-31-02 287 2.3 +/- 0.4; 0.6 -

05-09-02 282 1.9 +/- 0.3 0.5 -0.1 0.4 ;0.4 11-07-02 288 5.2 +/-0.5; 1.1 0.4+/-0.3;0.3 05-16-02 283 2.1 +/-0.3 ;0.5 - 11-14-02 288 3.6 +/- 0.4; 0.8 -

05-22-02 245 1.4 +/- 0.3 0.4 -0.4 0.5 ;0.5 11-21-02 284 2.1 +/- 0.3 0.5 0.5+0.3 ;0.4 05-30-02 325 1.8 +/- 0.3 0.4 - 11-27-02 244 1.7 0.3; 0.4 -

06-06-02 285 1.7 +/- 0.3; 0.5 -0.3 +/- 0.4 ;0.4 12-05-02 326 2.6 0.3 0.6 0.2 +/- 0.4 0.4 06-13-02 285 1.4 +/- 0.3; 0.4 - 12-12-02 282 4.0 0.4; 0.8 -

06-20-02 284 1.9 +/- 0.3; 0.5 0.1 + 0.4 ;0.4 12-19-02 285 3.8 0.4; 0.8 0.1 +/-0.4 ;0.4 06-27-02 287 2.9 4 0.4; 0.7 12-26-02 286 2.1 +/-0.3 ;0.5 -

2nd Qtr. Mean+/-s.d. 2.0 +/-0.5 -0.2+/- 0.2 4th Qtr. Mean+/-s.d. 3.1 +/-1.0 0.2+/- 0.2

' Volume based on two week collection period.

III - 9

LASALLE Table 1. Airborne Particulates and Iodine Cartridges Collection: Air Particulates - Continuous; weekly exchange Iodine Cartridges - Continuous; biweekly exchange Required LLD: Gross Beta = 0.01, I-131 = 0.07 pCi/m' Units: 10.2 pCi/m3 L-06 Nearsite No. 6 Date Volume Gross Date Volume Gross Collected (m3) Beta I-131' Collected (m3) Beta 1-131' 01-02-02 286 3.6 +/- 0.4; 0.8 -0.3 O.5 ;0.5 07-04-02 282 2.9 +/- 0.3 ; 0.6 -0.3 +/- 0.4 ;0.5 01-10-02 321 4.040.4;0.8 - 07-11-02 288 2.2 0.4; 0.5 -

01-17-02 281 2.7 0.4; 0.6 0.3 +/- 0.3 ;0.3 07-18-02 282 2.9 +/- 0.4; 0.6 -0. 1 +/- 0.4 ;0.4 01-24-02 284 3.9 4 0.4; 0.8 - 07-25-02 284 3.0 +/- 0.4 ; 0.7 -

01-31-02 286 2.6 +/- 0.4; 0.6 0.3 +/- 0.5 ;0.5 08-01-02 287 3.1 +/-0.3; 0.7 0.4+/- 0.4 ;0.4 02-06-02 249 3.7 +/- 0.4; 0.8 08-08-02 297 2.3 +/-0.3; 0.5 -

02-14-02 319 3.3 *0.4; 0.7 0.2+/-0.5;0.5 08-15-02 281 3.0 0.4; 0.6 0.1 +/- 0.4;0.4 02-21-02 287 1.8 0.3;0.4 - 08-22-02 274 1.7 +/-0.3 0.4 -

02-28-02 285 1.7 +/- 0.3; 0.5 -0.2 + 0.5 ;0.5 08-29-02 284 2.1 +/-0.3 ;0.5 0.1+/-0.3 ;0.3 03-07-02 287 3.6 + 0.4; 0.8 - 09-05-02 282 3.2 +/-0.4 0.7 -

03-14-02 283 3.0 +/-0.4; 0.7 -0.2 + 0.2 ;0.2 09-12-02 295 3.7 +/- 0.4; 0.8 0.2+/- 0.3 ;0.3 03-21-02 285 1.8 0.3; 0.5 - 09-19-02 267 3.3 0.4; 0.7 -

03-27-02 249 1.9 + 0.4; 0.5 0.1 + 0.4 ;0.4 09-26-02 300 2.2 +/- 0.3; 0.5 0.1 0.3 ;0.3 1st Qtr. Mean+/-s.d. 2.9 +/-0.9 0.+/- 0.2 3rd Qtr. Mean+/-s.d. 2.7 +/-0.6 0.1+/- 0.2 04-04-02 319 2.3 40.3 ;0.5 10-03-02 280 4.0 +/- 0.5; 0.8 -

04-11-02 288 2.6 + 0.3; 0.6 -0.4+/- 0.5;0.5 10-10-02 287 2.6 +/- 0.4; 0.6 0.00.4;0.4 04-18-02 280 2.8+/-0.4;0.6 - 10-17-02 289 3.3 +/- 0.4; 0.7 -

04-25-02 284 2.0 +/- 0.3; 0.5 0.0 +/- 0.4 ;0.4 10-24-02 279 2.7 +/- 0.4; 0.6 -0.0 + 0.4 ;0.4 05-02-02 290 2.2 +/- 0.4; 0.5 - 10-31-02 285 2.6 0.4; 0.6 -

05-09-02 282 2.1 i 0.3;0.5 -1.0+/-0.5;0.6 11-07-02 287 5.1 +/- 0.5 ;1.0 0.2+/-0.3;0.3 05-16-02 283 2.3 40.3 ;0.5 - 11-14-02 284 3.8 0.4; 0.8 -

05-22-02 246 1.2 + 0.3; 0.4 -0.1 +/- 0.4 ;0.4 11-21-02 285 2.4 0.3; 0.6 -0.7 + 0.3 ;0.4 05-30-02 324 1.9 0.3; 0.4 - 11-27-02 244 1.5 0.3; 0.4 -

06-06-02 284 2.1 40.4;0.5 -0.1+0.4;0.4 12-05-02 326 2.3 +/- 0.3 0.5 0.2+/-0.3 ;0.3 06-13-02 285 2.2 +/- 0.4; 0.5 12-12-02 282 3.9 + 0.4; 0.8 -

06-20-02 286 2.1 40.3;0.5 -0.1+0.5;0.5 12-19-02 287 4.0 0.5; 0.9 0.1 +/-0.3 ;0.3 06-27-02 288 3.6 +/- 0.4; 0.8 - 12-26-02 290 1.8 +/- 0.3; 0.4 -

2nd Qtr. Mean+/-s.d. 2.3 40.5 -0.3+/- 0.4 4th Qtr. Mean*s.d. 3.1 +/-1.0 -0.QE 0.3

' Volume based on two week collection period.

III - 10

LASALLE Table 1. Airborne Particulates and Iodine Cartridges Collection: Air Particulates - Continuous; weekly exchange Iodine Cartridges - Continuous; biweekly exchange Required LLD: Gross Beta = 0.01, I-131 = 0.07 pCi/m' Units: 1o 2 pCi/rn' L-10 (C) Streator Date Volume Gross Date Volume Gross Collected (in') Beta I-131' Collected (i') Beta I-131' 01-02-02 288 3.7 +/- 0.4; 0.8 -0.3 4 0.5 ;0.5 07-04-02 283 2.8 +/- 0.3; 0.6 0.1 +/- 0.4 ;0.4 01-10-02 319 4.8 0.4;0.9 - 07-11-02 287 2.6 +/- 0.4; 0.6 -

01-17-02 287 2.6 +/- 0.4; 0.6 -0.1 + 0.5 ;0.5 07-18-02 283 3.4 +/- 0.4; 0.7 -0.5+/-0.5 ;0.5 01-24-02 285 3.3 +0.4;0.7 - 07-25-02 285 2.4 +/- 0.4; 0.6 -

01-31-02 285 2.2 0.4; 0.5 0.2 +/- 0.4 ;0.4 08-01-02 285 3.0 +/- 0.3; 0.6 -0.4 0.4 ;0.4 02-06-02 246 3.9 +/- 0.4 0.8 - 08-08-02 300 2.4 +/- 0.3; 0.5 -

02-14-02 322 3.6 +/- 0.4; 0.8 -0.3 +/- 0.5 ;0.5 08-15-02 282 3.2 +/- 0.4; 0.7 -0.4+/- 0.4 ;0.4 02-21-02 287 1.5 40.3 ;0.4 08-22-02 274 2.1 +/- 0.3; 0.5 -

02-28-02 285 2.0 + 0.4; 0.5 -0.4 + 0.5 ;0.5 08-29-02 285 2.0 + 0.3; 0.5 -0.2 +/- 0.3 ;0.4 03-07-02 284 3.8 + 0.4; 0.8 09-05-02 286 3.1 +/-0.3 ;0.6 -

03-14-02 286 3.1 40.4;0.7 0.240.4;0.4 09-12-02 292 3.7 +/- 0.4 0.8 0.0+/- 0.4 ;0.4 03-21-02 285 2.0 + 0.4 ;0.5 - 09-19-02 276 3.5 +/- 0.4; 0.8 -

03-27-02 246 2.6 + 0.4; 0.6 0.2+/- 0.5 ;0.5 09-26-02 290 2.3 +/- 0.4 ; 0.5 -0.1 + 0.4 ;0.4 1st Qtr. Mean*s.d. 3.0 +/-0.9 -0.1+ 0.3 3rd Qtr. Mean+/-s.d. 2.8 0.6 -0.2+/- 0.2 04-04-02 324 2.3 + 0.3; 0.5 - 10-03-02 287 4.2 +/- 0.5; 0.9 -

04-11-02 282 2A 0.3 ;0.5 0.7+/- 0.4 ;0.4 10-10-02 282 2.9 0.4; 0.7 0.2+/- 0.3 ;0.3 04-18-02 281 2.7 + 0.4; 0.6 - 10-17-02 285 3.2 +/-0.4; 0.7 -

04-25-02 280 1.9 +/- 0.3 ;0.5 0.7+/- 0.4 ;0.4 10-24-02 285 2.5 0.4; 0.6 0.1 0.4;0.4 05-02-02 286 1.8 + 0.3 0.5 - 10-31-02 287 3.0 0.4; 0.7 -

05-09-02 282 1.9 0.3 ;0.5 0.4+/- 0.4 ;0.4 11-07-02 287 5.3 +/- 0.5; 1.1 0.5 0.3 ;0.3 05-16-02 283 2.1 +/-0.3 ;0.5 - 11-14-02 284 4.4 0.5; 0.9 -

05-22-02 245 1.2 +/- 0.3 ;0.4 0.1 +0.5;0.5 11-21-02 285 2.1 +/-0.3;0.5 0.2 0.4 ;0.4 05-30-02 325 1.8 + 0.3 0.4 - 11-27-02 248 2.0 0.3; 0.5 -

06-06-02 285 1.7 + 0.4; 0.5 -0.1 i 0.4 ;0.4 12-05-02 324 2.8 +/- 0.3; 0.6 -0.3 4 0.3 ;0.3 06-13-02 280 1.9 +/- 0.4; 0.5 - 12-12-02 285 4.4 0.4; 0.9 -

06-20-02 285 2.2 + 0.3; 0.5 -0.4 +/- 0.4 ;0.4 12-19-02 285 4.4 +/- 0.5; 0.9 -0.1 +/- 0.4 ;0.4 06-27-02 287 3.3 + 0.4; 0.7 - 12-26-02 285 2.4 0.3; 0.5 -

2nd Qtr. Mean:s.d. 2.1 +/-0.5 0.2+/- 0.4 4th Qtr. Mean*s.d. 3.4 +1.1 0.1+/- 0.3

'Volume based on two week collection period.

III - 11

LASALLE Table 2. Airbome Particulates Collection: Quarterly composites of weekly collections ODCM-Required LLDs: Cs-134 = 0.01, Cs-137 = 0.01 pCiIm' Other LLDs: Mn-54 = 0.01; Fe-59 = 0.015; Co-58, Co-60 = 0.01; Zn-65 = 0.04; Zr/Nb-95 = 0.01; Ba/La- 140 = 0.025 pCi/rm3 Units: 104 pCi/rn' Sample Description and Concentration L-01 Nearsite No. I 2002 Collection 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Period Lab Code LAP-2793 LAP-5004 LAP-7356 LAP-8889 Volume 3,704 3,744 3,731 3,735 Mn-54 5.8 +4.9 ;5.0 0.8 +/- 6.2 ; 6.2 6.7+/-5.0 ;5.1 -0.9+/-5.4 ;5.4 Fe-59 -25.2+/- 11.0; 11.9 17.3 +/- 12.6 ;12.9 -21.1 + 11.5; 12.1 -3.7 9.3; 9.3 Co-58 -0.5 + 4.8 ; 4.8 -4.8 4 5.5; 5.6 -4.1 5.4 ; 5.5 1.244.1 ;4.1 Co-60 7.7+/-5.6;5.8 -0.9 +/- 4.7 ; 4.7 -3.1 +/- 6.3 ; 6.3 1.7 +/- 2.4 ; 2.4 Zn-65 10.2 + 13.9; 14.0 -5.0 +/- 12.6; 12.6 5.6+/- 12.3; 12.3 14.6+/- 12.4; 12.6 Zr/Nb-95 8.1+/-6.1 ;6.3 10.7+/- 4.4 ;4.8 -7.1 +/- 11.3 ; 11.4 -14.7+/- 11.3 ; 11.6 Cs-134 10.5 +/- 6.4 ; 6.7 7.8 +/- 6.6 ;6.7 1.8+/-7.2 ;7.2 4.7+/- 6.1 ;6.2 Cs-137 2.9 +/- 6.2 ; 6.2 -4.1+/- 6.4 ; 6.4 5.9+/-6.0; 6.1 0.5+/-5.5 ;5.5 Ba/La-140 -106.2 +/- 9.1; 21.0 9.0 +/- 7.2 ; 7.3 45.1+/-4.7; 9.3 65.7 +/- 5.2; 12.8 L-03 Onsite No. 3 2002 Collection 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Period Lab Code LAP-2794 LAP-5005 LAP-7357 LAP-8890,1 Volume 3,713 3,747 3,713 3,707 Mn-54 -0.4 4 5.3 ; 5.3 -1.1 + 5.1; 5.1 6.7 +/- 5.0; 5.2 3.2 +4.5; 4.5 Fe-59 -1.6+/-12.2; 12.2 -23.1 +/- 10.9; 11.7 11.8+/-5.6;6.0 6.3 +/- 7.6 ; 7.6 Co-58 3.8 +/- 4.8 ; 4.8 6.2 +/- 6.5 ; 6.6 -5.5 +/- 4.2; 4.3 2.6 +/-2.9 ; 2.9 Co-60 1.3 5.7 ;5.7 -6.9 + 8.6 ; 8.6 -1.3+/-6.8;6.8 -3.4 +/- 4.8 ; 4.9 Zn-65 -12.2+/- 17.5; 17.7 3.0 + 14.5; 14.5 -27.4 +/- 13.7; 14.6 7.7 +/- 8.5 ; 8.6 Zr/Nb-95 -3.0 +/- 6.3; 6.3 5.0+4.5 ;4.5 -11.6+/-5.0;5.4 1.1+2.9 ;2.9 Cs-134 -3.7 +/- 9.1; 9.2 6.1+/- 6.2 ; 6.3 8.9 +/- 5.8 ; 6.0 -3.0 +/- 4.4 ; 4.5 Cs-137 -6.4 4 7.7 ;7.8 4.3 +/- 7.4 ;7.5 5.9+/-6.0;6.1 2.4 +/- 4.0; 4.0 Ba/La-140 11.8+/- 7.2 ; 7.5 76.0 4 6.9; 15.2 -68.2 + 7.3 ; 14.2 1.7+ 5.5 ;5.5 III -12

LASALLE Table 2. Airborne Particulates Collection: Quarterly composites of weekly collections ODCM-Required LLDs: Cs-134 = 0.01, Cs-137 = 0.01 pCi/m Other LLDs: Mn-54 = 0.01; Fe-59 = 0.015; Co-58, Co-60 = 0.01; Zn-65 = 0.04; Zr/Nb-95 = 0.01; Ba/La-140 = 0.025 pCi/rn3 3

Units: 104 pCi/

Sample Description and Concentration L-05 Onsite Station No. 5 2002 Collection 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Period Lab Code LAP-2795 LAP-5006 LAP-7358,9 LAP-8892 Volume 3,703 3,745 3,723 3,709 Mn-54 -12.7 +/- 7.4 ; 7.7 -0.8 + 6.0 ; 6.0 2.7+/- 3.9; 3.9 4.0+/- 5.2 ;5.2 Fe-59 9.54 11.6; 11.7 2.91 10.0; 10.0 4.1 4 5.5 ; 5.5 7.5 +/- 9.2 ; 9.3 Co-58 3.0+/-3.6 ;3.7 7.7+4.7 ;4.9 -1.3 +/- 4.0 ; 4.0 6.5 +/-3.8 ;3.9 Co-60 -4.8 + 9.2 ; 9.3 4.5 4 6.7 ; 6.8 0.2 + 3.5  ; 3.5 0.3 + 5.9 ; 5.9 Zn-65 -7.2+/- 16.7; 16.7 11.0+/- 11.4; 11.6 -2.8 4 8.1  ; 8.1 18.0+9.5; 10.0 Zr/Nb-95 -8.4 + 3.5 ; 3.8 11.2+/-6.9 ;7.2 -5.5 44.0 ;4.1 -6.1 + 4.7 ; 4.8 Cs-134 8.7+/-6.9 ;7.0 -2.1 + 5.9; 5.9 1.0 44.4 ;4.4 5.6+/-5.2; 5.3 Cs-137 3.4i6.9 ;6.9 3.6+/-5.6; 5.7 1.1 +3.6  ; 3.6 -6.6 +/- 5.4; 5.6 Ba/La-140 -78.349.8; 17.1 32.7 4 4.6 ; 7.4 13.4+/- 4.2 ;4.8 32.0 + 6.5 ; 8.6 L-06 Nearsite No. 6 2002 Collection lst Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Period Lab Code LAP-2796 LAP-5007 LAP-7360 LAP-8893 Volume 3,709 3,748 3,709 3,711 Mn-54 1.546.5 ;6.5 0.8 +/- 4.4 ; 4.4 7.343.8 ;4.0 0.3 45.6;5.6 Fe-59 -6.3 4 9.0 ; 9.1 -7.2+/-11.2; 11.3 16.6 4 6.6; 7.3 -8.8+ 11.8; 11.9 Co-58 5.1+/-4.1 ;4.2 -3.5+/-4.2 ;4.2 -0.5 4 4.5 ; 4.5 -6.7 +/-4.6 ; 4.8 Co-60 1.5 +/-7.7 ;7.7 2.7+9.4;9.4 0.345.9 ;5.9 4.5+/- 5.6 ;5.7 Zn-65 1.0 + 14.2; 14.2 12.0 + 8.6; 8.8 -4.84 11.9; 11.9 10.6 + 9.8 ; 9.9 Zr/Nb-95 -18.8 + 6.1; 6.9 -11.4+/- 6.5 ;6.8 -27.2 + 12.4; 13.3 3.8: 5.1 ;5.2 Cs-134 -3.4 + 8.0 ; 8.0 0.4 +/- 5.7 ; 5.7 0.8 +/- 6.0; 6.0 -1.7 + 4.8; 4.8 Cs-137 -11.2 +/-7.1 ;7.4 0.7 +/-6.7 ; 6.7 0.4 +/- 6.3; 6.3 2.8+/-5.0;5.1 Ba/La-140 -61.8 +/-7.7; 13.4 -14.5 + 9.0 ; 9.3 16.8+ 6.1 ;6.8 9.4 +/- 5.8 ; 6.0 III -13

LASALLE Table 2. Airbome Particulates Collection: Quarterly composites of weekly collections ODCM-Required LLDs: Cs-134 = 0.01, Cs-137 = 0.01 pCi/m' Other LLDs: Mn-54 = 0.01; Fe-59 = 0.015; Co-58, Co-60 = 0.01; Zn-65 = 0.04; Zr/Nb-95 = 0.01; Ba/La-140 = 0.025 pCi/m 3 Units: 104 pCi/m' Sample Description and Concentration L-10(C) Streator 2002 Collection lst Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Period Lab Code LAP-2797 LAP-5008 LAP-7361 LAP-8894 Volume 3,712 3,731 3,714 3,717 Mn-54 3.1 +/-6.8 ; 6.8 -9.5 4 6.4 ; 6.6 5.2+/- 5.4 ;5.5 -2.5 +/- 5.7 ; 5.7 Fe-59 -1.6+/-12.2; 12.2 4.4+/-8.1 ;8.1 -5.9 + 12.1 ; 12.1 -7.5 +/- 10.5 ; 10.6 Co-58 8.0+/- 5.4; 5.6 -0.3 + 3.9 ; 3.9 1.7+/-5.3 ;5.3 0.6 + 3.3 ; 3.3 Co-60 1.8 + 10.6; 10.6 9.8 +/- 6.4 ; 6.6 0.4 4 7.2 ; 7.2 1.9+/- 4.8; 4.8 Zn-65 -4.1 +/- 10.2; 10.2 -7.0+/- 12.1; 12.1 14.5 + 8.6 ; 8.9 -1.6+/- 12.5 ; 12.5 Zr/Nb-95 3.0 +/-6.8 ; 6.8 -6.0+/-7.1 ;7.1 -10.7 +/- 5.6 ; 5.9 4.3 +/-4.2 ;4.3 Cs-134 -0.8 +/-7.8 ; 7.8 1.2+5.9;5.9 4.0 + 6.6 ; 6.6 2.1+/- 6.2 ; 6.2 Cs-137 4.3 +/-5.8 ; 5.8 -0.7 +/- 6.6 ; 6.6 1.3+/-6.8;6.8 3.9 +/-5.2 ;5.2 Ba/La-140 -30.9 + 5.5 ; 7.8 -47.6 + 7.7; 11.4 -30.6 + 6.5 ; 8.5 41.6 +/- 8.7; 11.4 III -14

LASALLE Table 3. Milk Collection: Biweekly (May - October)

Monthly (November - April)

ODCM- I-13 1 = 0.5 pCi/L (May - October), I-131 = 5 pCilL (November - April),

Required LLDs: Cs-134 = 15, Cs-137 = 18, Ba/La-140 = 15 pCi/L Other LLDs: Mn-54 = 10; Fe-59 = 15; Co-58, Co-60 = 10; Zn-65 = 15; Zr/Nb-95 = 10 pCi/L Units: pCi/L Sample Description and Concentration L-42 (C) Biros Farm Date Collected 01-02-02 02-07-02 03-07-02 04-04-02 Lab Code LMI-42 LMI-779 LMI-1457 LMI-2061 I-131 -0.02 +/- 0.17 ;0.17 0.08 0.20 ; 0.20 -0.12 + 0.18 ;0.18 0.02 +/- 0.19 ;0.19 Mn-54 -1.1+/- 1.8; 1.8 -1.6 +/- 3.8 3.8 2.7 + 3.9 ;3.9 -2.0 4 2.9 ; 2.9 Fe-59 -2.6L+/-3.8 ;3.8 -3.2 +/-7.7; 7.7 -2.4 8.0; 8.0 -0.3 +/- 6.0; 6.0 Co-58 0.2+/-1.8; 1.8 -3.7 3.9 ;4.0 0.0 3.9 ;3.9 -1.1 3.1 3.1 Co-60 3.0 2.0; 2.0 1.1 4.8 4.8 -0.4 + 2.6; 2.6 -0.7 +/- 3.1 3.2 Zn-65 -3.1 5.4 ;5.4 -4.1 8.7 8.7 2.346.9;6.9 2.8 +/- 6.8 ; 6.8 Zr/Nb-95 -1.5 1.7; 1.7 -3.0 3.7;3.7 1.9+/-3.3 ;3.3 -1.0 +/- 3.2; 3.2 Cs-134 1.3+/-1.8; 1.8 2.9+/-3.8 ;3.8 0.8+/- 3.7 ;3.7 -0.9 + 3.9 3.9 Cs-137 0.5+/- 1.9; 1.9 1.6 3.3 ;3.3 1.7 3.8 ;3.8 2.6+ 3.7 ;3.7 Ba/La-140 0.44 1.7; 1.7 0.8+/-4.3 ;4.3 1.5+/-3.6;3.6 1.0+/-3.6; 3.7 Date Collected 05-02-02 05-16-02 05-30-02 06-13-02 Lab Code LMI-2935 LMI-3247 LMI-3478 LMI-3831 I-131 0.05 +/-0.17 ;0.17 -0.13 +/- 0.22 ;0.22 -0.21 +/- 0.19 ;0.19 -0.12 +/- 0.19 ;0.19 Mn-54 -1.5 + 1.6; 1.6 -0.7+/- 1.9; 1.9 1.3+/-2.0 ;2.0 0.3 43.3 ;3.3 Fe-59 -3.4+/-3.8 ;3.8 -5.8 4 4.4 ; 4.5 -3.4+/-4.4 ;4.4 5.3 4 6.9 ; 6.9 Co-58 -1.7+1.5; 1.5 0.4+/-t1.7; 1.7 -1.3 +/- 1.6; 1.6 2.0+ 3.1 ;3.1 Co-60 0.7+/- 1.9; 1.9 0.6+/- 2.4 ;2.4 2.4+/-2.3 ;2.3 2.5 +/-3.5 ;3.5 Zn-65 -1.5 + 4.3; 4.3 2.8+5.1 ;5.1 -4.8+/-5.1 ;5.1 -2.5 +/- 7.8 ; 7.8 Zr/Nb-95 0.7+/- 1.7; 1.7 -1.7 +/-1.9 ; 1.9 -0.3 +/-2.1 ;2.1 0.6 +/-2.8 ; 2.8 Cs-134 -0.5 + 1.8 ; 1.8 -0.1 + 2.2; 2.2 -0.5 +/- 2.0 ; 2.0 -1.5 +/-3.7 ;3.7 Cs-137 0.9+ 1.9; 1.9 -0.8 +/-2.1 ;2.1 -1.9 +/- 2.2; 2.2 1.1 4 3.5 ; 3.5 BaALa-140 -1.14 1.6; 1.6 2.7 +/-2.1 ;2.1 5.0+/-2.0;2.1 1.6+/-2.8 ;2.8 III - 15

LASALLE Table 3. Milk Collection: Biweekly (May - October)

Monthly (November - April)

ODCM- I- 131 = 0.5 pCi/L (May - October), I- 131= 5 pCi/L (November - April),

Required LLDs: Cs-134 = 15, Cs-137 = 18, Ba/La-140 = 15 pCi/L Other LLDs: Mn-54 = 10; Fe-59 = 15; Co-58, Co-60 = 10; Zn-65 = 15; Zr/Nb-95 = 10 pCi/L Units: pCi/L Sample Description and Concentration L-42 (C) Biros Farm Date Collected 06-27-02 07-11-02 07-25-02 08-08-02 Lab Code LMI-4273 LMI-4556 LMI-4961,2 LMI-5265 1-131 -0.15 +/-0.18 ;0.18 -0.29 0.19 ;0.20 -0.00+/-0.14 ;0.14 -0.01 +/- 0.26 ;0.26 Mn-54 -0.6 1.5; 1.5 -0.3 +/- 0.7 ;0.7 -1.5 +/- 1.7; 1.7 -1.3 +/-3.6;3.6 Fe-59 -1.2 3.3 3.3 -0.4 1.5; 1.5 -0.6 +/- 3.7; 3.7 -1.4 + 7.5; 7.5 Co-58 0.3 1.5;1.5 -0.2 +/- 0.7; 0.7 -1.7 +/- 1.7; 1.7 -0.0 3.3 3.3 Co-60 -0.2 1.7; 1.7 0.7 4 0.8 ;0.8 0.6+/-2.1 ;2.1 0.6+/-4.0 ;4.0 Zn-65 -2.8 +/- 3.8; 3.8 -2.5 1.9; 1.9 -2.244.2 ;4.2 -3.6 + 8.3; 8.3 Zr/Nb-95 -1.1 +/- 1.6; 1.6 -1.2+/-0.7 ;0.8 -0.4 + 1.5; 1.5 0.7+/- 3.4 ;3.4 Cs-134 -0.7+/- 1.5; 1.5 -0.7 +/- 0.8; 0.8 1.9 42.0 2.0 0.7+/- 3.5 ;3.5 Cs-137 0.9 1.8; 1.8 0.5 +/- 0.8 ;0.8 1.6 2.0; 2.0 -1.8 +/- 4.0 4.1 BalLa-140 -6.0 1.5; 1.7 -2.4 +/- 0.7 0.8 -0.8 1.7; 1.7 1.0 + 3.0 ;3.0 Date Collected 08-22-02 09-05-02 09-19-02 10-03-02 Lab Code LMI-5537 LMI-5785 LMI-6166 LMI-6530 1-131 0.02 + 0.13 ;0.13 -0.13 I0.18 ;0.18 0.01 +/-0.16 ;0.16 -0.09 4 0.14 ;0.14 Mn-54 -0.0 + 0.7 ; 0.7 -0.2+/-2.1 ;2.1 -1.3 +/- 2.2 ; 2.2 -2.6 + 3.6; 3.6 Fe-59 -2.5+/- 1.9;2.0 2.7+/- 4.5 ;4.5 0.4+/-3.8 ;3.8 1.2 47.4;7.4 Co-58 -0.7 +/- 0.7 ; 0.7 0.0 +/-2.5 ; 2.5 -0.4 +/- 1.8; 1.8 1.0+ 3.0; 3.0 Co-60 -0.2 +/- 0.9 ; 0.9 -1.2 + 2.5; 2.6 -0.4+/-2.1 ;2.1 -0.3 +/- 5.0 ; 5.0 Zn-65 -1.8+/-2.1 ;2.1 -1.7+/- 6.3 ;6.3 -6.9 + 5.4 ; 5.5 2.8 + 6.7 ; 6.8 Zr/Nb-95 0.2 +/- 0.8 ; 0.8 1.2+/-2.3 ;2.4 -2.3+/-2.2 ;2.2 0.3 +/-3.6 ;3.6 Cs-134 -0.4 +/- 0.8 ; 0.8 0.0 +/-2.3 ; 2.3 0.2+/-2.4 ;2.4 0.6+/- 3.7; 3.7 Cs-137 0.4+/- 0.8 ;0.8 2.5 +/- 2.6 ; 2.6 -2.6+/-2.3 ;2.3 -0. 1+/- 3.8 ; 3.8 Ba/La-140 1.6+/- 0.7 ;0.8 0.5+/-2.5 ;2.5 -0.9+/-2.1 ;2.1 -0.842.9 ;2.9 III - 16

LASALLE Table 3. Milk Collection: Biweekly (May - October)

Monthly (November - April)

ODCM- I-131 = 0.5 pCi/L (May - October), I-131= 5 pCi/L (November - April),

Required LLDs: Cs-134 = 15, Cs-137 = 18, BalLa-140 = 15 pCi/L Other LLDs: Mn-54 = 10; Fe-59 = 15; Co-58, Co-60 = 10; Zn-65 = 15; Zr/Nb-95 = 10 pCi/L Units: pCi/L Sample Description and Concentration L-42 (C) Biros Farm Date Collected 10-17-02 10-31-02 11-14-02 12-05-02 Lab Code LMI-7004 LMI-7454 LMI-7810 LMI-8142 I-131 -0.02 + 0.15 ;0.15 -0.06 +/- 0.16 ;0.16 -0.04 +/- 0.16 ;0.16 -0.07 +/- 0.15 ;0.15 Mn-54 0.942.4 ;2.4 2.042.0 ;2.1 1.1 +/- 1.9; 1.9 1.4+/- 1.9; 1.9 Fe-59 0.5+/-4.6;4.6 2.8+4.7 ;4.8 -3.8 +/- 3.9 ; 3.9 0.8 +/- 4.6 ; 4.6 Co-58 -1.1 2.4 ; 2.4 0.9 +/- 2.2 ;2.2 0.4 + 1.5 ; 1.5 0.9+/- 1.8; 1.8 Co-60 -2.0+/-2.7 ;2.7 0.5 +/- 2.3 ; 2.3 0.8 + 2.2 ; 2.2 -0.4 4 2.6 ; 2.6 Zn-65 -10.8 A 6.7; 6.8 1.145.9;5.9 -11.3 + 5.4 ; 5.6 -4.9 +/- 5.9 ; 5.9 Zr/Nb-95 -3.1 2.7; 2.7 1.2+ 1.9; 1.9 -0.9+/- 2.1 ;2.1 -0.7+/-2.1 ;2.1 Cs-134 -2.442.6 ;2.6 2.0 +/- 2.3 ; 2.3 -0.8 + 2.0 ; 2.0 1.1+ 2.4 ; 2.4 Cs-137 -0.7 4 2.7 ; 2.7 0.3 + 2.4 ; 2.4 -3.1 + 1.9 ; 2.0 -0.1 + 2.2 ; 2.2 Ba/La-140 0.9 + 2.2 ; 2.2 -2.8 + 2.5 ; 2.5 2.5+/- 1.9; 1.9 -0.9 1.8; 1.8 III - 17

LASALLE Table 4. Fish, Edible Portions Collection: Semiannually ODCM-Required LLDs: Mn-54 = 0.13, Fe-59 = 0.26, Co-58 = 0.13, Co-60 = 0.13, Zn-65 = 0.26, Cs-134 = 0.1, Cs-137 = 0.1 pCilg wet weight Other LLDs: Zr/Nb-95 = 0.20, BalLa-140 = 0.30 pCi/g wet weight Units: 10.2 pCi/g wet weight Sample Description and Concentration L-35 (C) Marseilles Pool of Illinois River Date Collected 05-01-02 05-01-02 10-02-02 10-02-02 Lab Code LF-2879 LF-2880 LF-6434 LF-6435 Type Channel Catfish Freshwater Drum Channel Catfish Smallmouth Buffalo Mn-54 -0.3 + 0.6 ; 0.6 1.5 +/-0.8 ; 0.8 0.2 + 0.8 ; 0.8 0.1I 0.5 ; 0.5 Fe-59 0.7 + 1.1 ; 1.1 -0.7 +/- 1.9; 1.9 0.5k 1.7; 1.7 -0.1 A 1.2 ; 1.2 Co-58 -0.2 + 0.5 ; 0.5 -0.5 +/- 0.7 ; 0.7 -0.1 +/- 0.6; 0.6 0.5 +/-0.5 ; 0.5 Co-60 0.2 + 0.7 ; 0.7 0.1 +/- 1.1 ; 1.1 0.7 +/- 0.7 ; 0.7 0.2 +/- 0.6 ; 0.6 Zn-65 -1.1 + 1.6; 1.6 0.4 +/- 2.2 ;2.2 -0.7 + 1.6; 1.6 -0.7 + 1.5; 1.5 ZrlNb-95 -0.0 + 0.5 ; 0.5 -0.2 +/- 0.7  ; 0.7 -0.4 +/- 0.7 ; 0.7 0.6 +/- 0.6 ; 0.6 Cs-134 -0.3 + 0.6 ; 0.6 -0.3 +/- 0.8  ; 0.8 0.4 + 0.7 ; 0.7 0.1 0.6; 0.6 Cs-137 0.3 + 0.6 ; 0.6 -0.1 0.8  ; 0.8 0.3+/-0.7;0.7 -0.2 +/- 0.5 ; 0.5 Ba/La-140 -0.3 + 0.7 ; 0.7 -2.1 +/- 1.1  ; 1.1 0.7 +/- 0.6 ; 0.6 -1. I +0.6 ;0.6 II -18

LASALLE Table 4. Fish, Edible Portions Collection: Semiannually ODCM-Required LLDs: Mn-54 = 0.13, Fe-59 = 0.26, Co-58 = 0.13, Co-60 = 0.13, Zn-65 0.26, Cs-134 = 0.1, Cs-137 = 0.1 pCi/g wet weight Other LLDs: Zr/Nb-95 = 0.20, Ba/La-140 = 0.30 pCi/g wet weight Units: 10-2 pCi/g wet weight Sample Description and Concentration L-36 Illinois River. Upstream of Discharge Date Collected 05-01-02 05-01-02 10-02-02 10-02-02 Lab Code LF-2881 LF-2882,3 LF-6431 LF-6432,3 Type Channel Catfish Smallmouth Buffalo Smallmouth Buffalo Channel Catfish Mn-54 0.0 +/- 0.7 ; 0.7 -0.4 +/- 0.5 ; 0.5 -0.0 +/- 0.8 ; 0.8 0.6k 0.7; 0.7 Fe-59 -0.4 1.5; 1.5 0.6k 1.0; 1.0 -0.8 +/- 2.2 ; 2.2 -0.3 1.6; 1.6 Co-58 -0.4+/- 0.6 ; 0.6 0.0 +/- 0.5 ; 0.5 -0.4 + 0.8 ; 0.8 -0.6 + 0.6 ; 0.6 Co-60 0.3 +/- 0.7 ; 0.7 0.2 + 0.6 ; 0.6 0.2 +/- 0.8 ; 0.8 0.3 0.8 ;0.8 Zn-65 1.2 + 1.8 ; 1.8 0.2k 1.0; 1.0 0.3 2.0 ; 2.0 -0.3 1.7; 1.7 Zr/Nb-95 -0.3 +/- 0.6 ; 0.6 -0.1 0.4 ; 0.4 -0.8 4 0.8 ; 0.8 -0.6 4 0.8 ; 0.8 Cs-134 0.3 +/- 0.8 ; 0.8 0.2 + 0.6; 0.6 0.4 1.0 ; 1.0 -0.2 + 0.7 ; 0.7 Cs-137 -0.2 +/- 0.7 ; 0.7 -0.2 + 0.4 ; 0.4 I0.8k.;0.8 1.13 0.8; 0.8 Ba/La-140 -0.2 +/- 0.8 ; 0.8 -0.6 + 0.5 ; 0.5 -0.8 1.0 ; 1.0 -0.3+0.7 ;0.7 III - 19

LASALLE Table 5. Bottom Sediments Collection: Semiannually ODCM-Required LLDs: Cs-134 = 0.15, Cs-137 = 0.18 pCi/g dry weight Other LLDs: Mn-54 = 0.15; Fe-59 = 0.60; Co-58,60 = 0.10; Zn-65 = 0.60; Zr/Nb-95 = 0.20; BalLa = 0.60 g dry weight Units: 102 pCi/g dry weight Sample Description and Concentration L-40 Illinios River Downstream Date Collected 05-09-02 10-03-02 Lab Code LBS-3120 LBS-6536 Mn-54 -0.8 +/- 1.0; 1.0 0.5 + 0.7 ; 0.7 Fe-59 1.2+/- 1.8; 1.8 -0.4 1.7; 1.7 Co-58 -0.4 +/- 0.8 ; 0.8 0.3 +/- 0.7 ; 0.7 Co-60 0.8+/-1.0;1.0 1.0+ 0.8 ;0.8 Zn-65 0.3 4 2.4 ; 2.4 1.0+ 1.7; 1.7 ZrlNb-95 -1.4 +/- 1.0; 1.0 -0.5 + 0.7 ; 0.7 Cs-134 0.9 +/- 1.2 ; 1.2 0.6 + 0.6 ; 0.6 Cs-137 4.4 1.2;1.4 3.9 +/- 1.8 ; 1.9 Ba/La-140 -4.1 + 0.9 ; 1.1 -1.1 +/- 0.8 ; 0.8 L-41 Illinios River Downstream Date Collected 05-09-02 07-11-02 10-03-02 b

Lab Code LBS-3121 LBS-4606 LBS-6537 Mn-54 1.4+/-2.5 ;2.5 OA +/-1.6; 1.6 0.6 + 0.8 ; 0.8 Fe-59 -2.1 +/- 5.7 ; 5.8 -1.2 +/- 3.8; 3.8 -0.3 +/- 1.7; 1.7 Co-58 -0.2 +/- 2.4 ; 2.4 0.2+ 1.6; 1.6 -0.0 +/- 0.7 ; 0.7 Co-60 10.5 + 5.0; 5.2 2.2 +/- 1.8 ; 1.8 0.7 + 0.9 ; 0.9 Zn-65 -1.3+/-5.7;5.7 -2.9 +/- 4.4; 4.4 1.6+2.0;2.1 Zr/Nb-95 -3.9+ 2.7 ;2.7 -1.5 +/-1.7 ; 1.7 -1.9 + 0.8 ; 0.8 Cs-134 5.1 +/-3.1 ;3.2 3.5+/-2.0 ;2.0 1.4+/- 1.0; 1.0 Cs-137 22.8 + 6.6 ; 7.3 7.4+/- 2.8 ;3.0 5.8+/- 1.7;1.9 Ba/La-140 1.6+/- 2.2; 2.2 -1.7+/- 2.0 ;2.0 -1.1 0.8 ; 0.8

'Sample recounted with the following results: Co-60 = 7.1 +/- 3.3 pCilgdry; Cs-137 = 19.9 +/- 5.9 pCi/gdry.

'Location resampled; results of resample used in compilation of quarterly summary table.

III -20

LASALLE Table 6. Vegetation Collection: Annually ODCM-Required LLDs: I-131 = 0.06, Cs-134 = 0.06, Cs-137 = 0.08 pCi/g wet weight Other LLDs: Mn-54 = 0.05; Fe-59 = 0.10; Co-58, Co-60, Zn-65 = 0.05; Zr/Nb-95 = 0.01; BalLa-140 = 0.02 pCi/g wet weight Units: 10 pCi/g wet weight Sample Description and Concentration T () Fi,r-np

-rnntrnl t5_B

-%_VIILAVl UISWvW lpmpntc

^_sWAN1w11LO Date Collected 09-14-02 09-14-02 Lab Code LVE-5982 LVE-5983 Type Cabbage Rutabagas Mn-54 -0.1 4 0.7 ; 0.7 0.0 + 0.7 ; 0.7 Fe-59 0.5 4 1.7 ; 1.7 -0.5*2.1 ;2.1 Co-58 0.4 + 0.8 ; 0.8 -0.3 + 0.9 ; 0.9 Co-60 -0.7

• 1.0; 1.0 0.2+/- 1.3; 1.3 Zn-65 -1.4 4 1.9 ; 1.9 -0.7 +/- 2.4 ; 2.4 Zr/Nb-95 -0.4 4 0.8 ; 0.8 0.3 + 0.8 ; 0.8 I-131 0.6 +/- 0.8 ; 0.8 -0.4 + 0.7 ; 0.7 Cs-134 0.4 + 0.9 ; 0.9 -0.3 + 0.9 ; 0.9 Cs-137 -0.2 1.0; 1.0 0.6

• 1.0 ; 1.0 Ba/La-140 0.2 +/- 0.6 ; 0.6 -1.0

• 0.8 ; 0.9 L-Ouad 1 Diane Partridge Date Collected 09-14-02 b9-14-02 Lab Code LVE-5973 LVE-5974 Type Cabbage Onions Mn-54 -0.1 + 0.7 ; 0.7 0.1* 0.7; 0.7 Fe-59 0.6 + 1.4 ; 1.4 -2.7 +/- 1.7; 1.7 Co-58 0.5

• 0.6 ; 0.6 -0.7

• 0.7 ; 0.7 Co-60 0.1 40.8 ;0.8 -0.1

• 1.0; 1.0 Zn-65 0.24 1.7;1.7 -1.0*1.7; 1.7 Zr/Nb-95 0.0

• 0.7 ; 0.7 0.4

• 0.7 ; 0.7 I-131 -0.1 40.7 ;0.7 -0.5 + 0.5 ;0.5 Cs-134 0.4*0.8 ;0.8 -0.2

• 0.9 ; 0.9 Cs-137 0.1 0.7 0.7 0.1

• 0.8 ; 0.8 BatLa-140 -0.3

• 0.7 ; 0.7 -2.4 1.2; 1.2 III -21

LASALLE Table 6. Vegetation Collection: Annuafty ODCM-Required LLDs: 1-131 = 0.06, Cs-134 = 0.06, Cs-137 = 0.08 pCi/g wet weight Other LLDs: Mn-54 = 0.05; Fe-59 = 0.10; Co-58, Co-60, Zn-65 = 0.05; Zr/Nb-95 = 0.01; Ba/La-140 = 0.02 pCi/g wet weight Units: 10.2 pCi/g wet weight Sample Description and Concentration L-Ouad 2 Mike & Gina Welbourne Date Collected 09-14-02 09-14-02 Lab Code LVE-5975 LVE-5976 Type Cabbage Beets Mn-54 0.3 + 0.5 ; 0.5 -0.1 +/- 0.6 ; 0.6 Fe-59 0.8 + 0.9 ; 0.9 1.4 +/- 1.2 ; 1.3 Co-58 0.1 +0.5 ;0.5 -0.1 + 0.6 ; 0.6 Co-60 0.1 +0.5 ; 0.5 -0.8 +/- 0.7 ; 0.7 Zn-65 0.2 h 1.3 ; 1.3 -0.8k 1.1; 1.1 Zr/Nb-95 0.3+0.4 ;0.4 -0.5 + 0.6 ; 0.6 I-131 0.5 +0.5 ;0.5 0.3 +/- 0.5 ; 0.5 Cs-134 0.3 + 0.5 ; 0.5 0.8 + 0.7 ; 0.7 Cs-137 0.1 +0.6 ;0.6 0.7 t 0.6 ; 0.6 Ba/La-140 0.6 + 0.4 ; 0.4 0.4 + 0.5 ; 0.5 L-Quad 3 Michael Olson Date Collected 09-14-02 09-14-02 Lab Code LVE-5977,8 LVE-5979 Type Swiss Chard Beets Mn-54 -0.3 + 0.4 ; 0.4 0.0 0.4 ; 0.4 Fe-59 0.1 L 1.0 ; 1.0 -0.4k 1.1; 1.1 Co-58 -0.2 + 0.4 ; 0.4 -0.1 0.4; 0.4 Co-60 -0.1 + 0.4 ; 0.4 0.8 +/- 0.5 ; 0.5 Zn-65 0.7 + 1.3 ; 1.3 -0.5+ 1.1; 1.1 Zr/Nb-95 -0.4+0.4 ;0.4 0.24 0.4; 0.4 I-131 -0.3 + 0.5 ;0.5 -0.2 + 0.5 ; 0.5 Cs-134 0.4 + 0.5 ; 0.5 0.4 +/- 0.5 ; 0.5 Cs-137 0.4 + 0.5 ; 0.5 -0.0 + 0.5 ; 0.5 BaJLa-140 0.1 +0.4 ;0.4 -0.0 +/- 0.4 ; 0.4 III -22

LASALLE Table 6. Vegetation Collection: Annually ODCM-Required LLDs: I-131 = 0.06, Cs-134 = 0.06, Cs-137 = 0.08 pCilg wet weight Other LLDs: Mn-54 = 0.05; Fe-59 = 0.10; Co-58, Co-60, Zn-65 = 0.05; Zr/Nb-95 = 0.01; BalLa-140 = 0.02 pCilg wet weight Units: 10 2 pCi/g wet weight Sample Description and Concentration L-Ouad 4 Robert Eisers Date Collected 09-14-02 09-14-02 Lab Code LVE-5980 LVE-5981 Type Beets Beet Greens Mn-54 -0.4 + 0.6 ; 0.6 0.4 +/- 0.7 ; 0.7 Fe-59 0.21+/-1.3; 1.3 -0.5 1.6; 1.6 Co-58 0.8 + 0.5 ; 0.5 -0.2 +/- 0.6 ; 0.6 Co-60 -0.2 + 0.7 ; 0.7 0.9 +/- 0.9 ; 0.9 Zn-65 1.7 1.4 ; 1.4 -01.1 2.1 ; 2.1 Zr/Nb-95 0.0 +/- 0.6 ; 0.6 -0.6 + 0.7 ; 0.7 I-131 -0.1 0.5 ;0.5 -0.6 0.6 ; 0.6 Cs-134 -0.2 + 0.7 ; 0.7 0.1 0.8 ; 0.8 Cs-137 0.0 + 0.6 ; 0.6 -0.1 0.8 ; 0.8 Ba/La-140 0.8 + 0.5 ; 0.5 -0.3 +/- 0.5 ; 0.5 III -23

LASALLE Table 7. Surface Water Collection: Monthly composites of weekly collections ODCM- Gross Beta = 4, Mn-54 = 15, Fe-59 = 30, Co-58 = 15, Co-60 = 15, Zn-65 = 30, Required LLDs: Zr/Nb-95 = 15, Cs-134 = 15, Cs-137 =18, Ba/La-140 = 15 pCi/L Units: pCi/L Sample Description and Concentration L-21 (C) Illinois River at Seneca 2002 Collection January February March Period Lab Code LSW-790 LSW-1384 LSW-2362 Gross Beta 4.8 1.1; 1.3 4.2+/-1.1 ;1.3 3.8+/- 1.5 ;1.6 Mn-54 -3.0 + 2.6 ; 2.6 -3.6 + 3.4; 3.4 0.2 +/- 1.3 ; 1.3 Fe-59 3.644.5 ;4.5 -8.8 + 6.4 ; 6.5 -0.7 +/- 2.9 ; 2.9 Co-58 0.0+/-2.4 ;2.4 0.3 + 2.8 ; 2.8 -1.0 +/- 1.4 ; 1.4 Co-60 0.4X3.1 ;3.1 1.5 3.6; 3.6 0.1 +/- 1.5 ; 1.5 Zn-65 -1.5 +/-5.0; 5.0 3.6+/- 6.6 ; 6.6 -2.9 +/- 3.2; 3.3 ZrlNb-95 -3.5 + 2.7; 2.7 -0.8+/-2.9 ;2.9 2.3+/-3.2;3.2 Cs-134 -1.1 2.7 ; 2.7 2.0+/- 3.7; 3.7 0.1 +/- 1.6 ; 1.6 Cs-137 1.7+/- 2.7; 2.7 -2.0 + 3.0 ; 3.0 -0.3 +/- 1.5; 1.5 Ba/La-140 -8.4 +/- 3.0; 3.3 -4.4+/-3.7 ;3.8 -4.3 1.8; 1.9 2002 Collection April May June Period Lab Code LSW-2756,7 LSW-3754 LSW-4288 Gross Beta 4.0 +/- 0.7 ; 0.8 4.2+ 1.0 ;1.2 4.5+/-1.0; 1.2 Mn-54 1.24 1.1 ; 1.1 0.5 +/- 0.8 ; 0.8 1.0+/- 1.6; 1.6 Fe-59 0.5+/- 2.1 ;2.1 -1.7 +/- 1.6; 1.7 -3.5+/-4.3 ;4.3 Co-58 -1.2 + 1.2 ; 1.2 0.3 +/- 0.8 ; 0.8 2.8+/-2.0;2.0 Co-60 -0.3 4 1.5; 1.5 0.4 +/- 0.9 ; 0.9 -1.5+/-2.7;2.7 Zn-65 -0.2 4 2.4 ; 2.4 -0.3 4 2.0 ; 2.0 -1.0+ 3.1 ;3.1 Zr/Nb-95 -1.7 4 1.2; 1.2 -0.8 + 0.9 ; 0.9 -0.3 + 2.0 ; 2.0 Cs-134 0.0 +/-1.3 ; 1.3 0.1+/- 1.0 ; 1.0 1.1+2.0 ;2.0 Cs-137 -0.2 +/- 1.3; 1.3 0.3+/- 1.0; 1.0 -0.2 + 2.2 ; 2.2 Ba/La-140 -4.4 +/-1.6; 1.7 -4.0+0.9; 1.1 1.7+2.9 ;3.0 III -24

LASALLE Table 7. Surface Water Collection: Monthly composites of weekly collections ODCM- Gross Beta = 4, Mn-54 = 15, Fe-59 = 30, Co-58 = 15, Co-60 = 15, Zn-65 = 30, Required LLDs: Zr/Nb-95 = 15, Cs-134 = 15, Cs-137 = 18, Ba/La-140 = 15 pCi/L Units: pCi/L Sample Description and Concentration L-21 (C) Illinois River at Seneca 2002 Collection July August September Period Lab Code LSW-5460 LSW-5994 LSW-6694 Gross Beta 5.6 + 1.4 ; 1.7 6.1+/- 1.3 ;1.6 5.3 1.5 ;1.7 Mn-54 -1.1 +/-1.6; 1.6 -0.1 +/- 1.8; 1.8 -1.5+/-2.5 ;2.5 Fe-59 -1.4 +/- 3.6; 3.6 -1.2 +/- 3.8 ;3.8 -3.6 +/- 6.6; 6.6 Co-58 1.5+/- 1.6; 1.7 -0.4 +/- 2.0; 2.0 -0.4 +/- 3.4 ;3.4 Co-60 -0.8 1.8; 1.8 0.2 2.0 ;2.0 -1.7 + 3.9; 3.9 Zn-65 -1.4+/-4.0 ;4.0 -4.5 4.2 ;4.3 0.1+/-5.8;5.8 Zr/Nb-95 3.8+/-3.4 ;3.4 2.3+/-3.8 ;3.9 1.8+/-2.4 ;2.5 Cs-134 1.2 + 1.6 ; 1.6 -0.8 1.9; 1.9 -0.9 +/- 3.0 3.0 Cs-137 1.8+/-2.2 ;2.2 0.6+/-2.1 ;2.1 1.0+/-2.5 ;2.5 Ba/La-140 5.2+/- 1.8 ;2.0 -1.6 2.2 2.2 0.8 +/- 2.3 ;2.3 2002 Collection October November December Period Lab Code LSW-7639 LSW-8273 LSW-8598 Gross Beta 5.6+/- 1.3 ;1.6 6.7+/- 1.4; 1.7 8.4 +/- 1.5; 2.0 Mn-54 -1.8+2.4 ;2.4 -0.5 +/- 1.7; 1.7 0.4+/- 1.5; 1.5 Fe-59 -6.6 +/- 4.4 ; 4.5 1.0+/-3.4 ;3.4 -2.3 +/- 2.8 ; 2.8 Co-58 1.1+/-2.1 ;2.1 -0.8 1.5; 1.5 -1.1 1.6 ; 1.6 Co-60 -0.3+2.1 ;2.1 1.0+/- 1.6; 1.6 -1.2 +/- 2.0 ; 2.0 Zn-65 -5.2 A 6.2 ; 6.2 0.744.1 ;4.1 -4.3 + 4.6 ; 4.6 Zr/Nb-95 -6.1 + 2.8 ; 3.0 2.2+/- 1.9 ;2.0 1.741.9; 1.9 Cs-134 -0.4 4 2.4 ; 2.4 0.3 +/- 2.3 ; 2.3 -1.8+/-2.0;2.0 Cs-137 -0.2 + 2.3; 2.3 -0.2 4 1.9 ; 1.9 0.2 +/-1.9 ; 1.9 Ba/La-140 -1.0 3.2; 3.2 -7.4+/-2.7 ;2.9 -1.7 + 1.8; 1.8 III -25

LASALLE Table 7. Surface Water Collection: Monthly composites of weekly collections ODCM- Gross Beta = 4, Mn-54 = 15, Fe-59 = 30, Co-58 = 15, Co-60 = 15, Zn-65 = 30, Required LLDs: Zr/Nb-95 = 15, Cs-134 =15, Cs-137 = 18, Ba/La-140 = 15 pCi/L Units: pCi/L Sample Description and Concentration L-40 Illinois River Downstream 2002 Collection January February March Period Lab Code LSW-791 LSW-1385 LSW-2363 Gross Beta 4.2+1.0; 1.2 5.3 + 1.2 ; 1.5 4.4+1.7 ;1.8 Mn-54 -0.7 1.6; 1.6 0.5 +/- 2.9 ; 2.9 0.7+ 1.4; 1.4 Fe-59 -0.6 + 2.6; 2.6 -0.8 +/- 6.2 ; 6.2 -1.4 + 3.0 ; 3.0 Co-58 -1.4 1.8; 1.8 0.5+3.0 ;3.0 -1.2+ 1.4; 1.4 Co-60 0.1 + 1.9 ; 1.9 -3.6 + 3.7; 3.7 -0.1 + 1.6 ; 1.6 Zn-65 0.7+3.0 ;3.0 3.3 + 5.6 ; 5.6 -1.7 2.8; 2.8 ZrlNb-95 -0.7 + 1.9; 1.9 0.5 + 2.8 ; 2.8 1.5 + 1.4; 1.4 Cs-134 0.1+ 1.9 ; 1.9 0.2+/-3.3 ;3.3 0.64 1.5; 1.5 Cs-137 -0.1 + 2.0; 2.0 2.2+/-3.1 ;3.1 -0.5 1.8; 1.8 BaALa-140 -1.8+2.1 ;2.1 2.1+ 3.6 ; 3.6 -5.94 1.9 ;2.1 2002 Collection April May June Period Lab Code LSW-2758 LSW-3755 LSW-4289 Gross Beta 5.8+ 1.8 ;2.0 4.2+1.1 ;1.2 4.4 1.2 ; 1.4 Mn-54 -1.4+ 1.9; 1.9 0.0 + 0.8 ; 0.8 -0.7 + 1.5 ; 1.5 Fe-59 -2.7 + 3.4; 3.4 -0.9 + 1.4; 1.4 -4.4+3.1 ;3.2 Co-58 0.5+ 1.7; 1.7 0.2 + 0.8 ; 0.8 -0.4 + 1.6 ; 1.6 Co-60 -0.8+ 2.4 ;2.4 0.6+0.9; 0.9 1.8 4 1.8 ; 1.8 Zn-65 0.3+3.4 ;3.4 0.0+ 1.9; 1.9 -3.4+ 3.9 ;4.0 Zr/Nb-95 -0.1 + 1.9 ; 1.9 0.1+ 0.8 0.8 -0.6 + 1.8; 1.8 Cs-134 -0.3+2.1 ;2.1 0.8 + 0.9 ; 0.9 1.0+1.7; 1.7 Cs-137 1.7+ 1.9; 1.9 1.0+ 0.9; 0.9 -0.6 + 1.8 ; 1.8 BafLa-140 -9.2 + 2.5 ; 2.9 -1.6+ 1.0; 1.0 1.8+ 2.1 ;2.1 III -26

LASALLE Table 7. Surface Water Collection: Monthly composites of weekly collections ODCM- Gross Beta = 4, Mn-54 = 15, Fe-59 = 30, Co-58 = 15, Co-60 = 15, Zn-65 = 30, Required LLDs: Zr/Nb-95 = 15, Cs-134 = 15, Cs-137 = 18, BalLa-140 = 15 pCi/L Units: pCiJL Sample Description and Concentration L-40 Illinois River Dovnstream 2002 Collection July August September Period Lab Code LSW-5461 LSW-5995 LSW-6695 Gross Beta 7.3* 1.7 ;2.0 5.8+/- 1.2 ;1.5 5.2* 1.5 ;1.7 Mn-54 0.0* 1.6; 1.6 - -0.4 2.9; 2.9 0.8*1.8; 1.8 Fe-59 -5.0* 3.2; 3.3 -4.8*5.7 ;5.7 0.5+ 3.3 ;3.3 Co-S8 0.5 1.4; 1.4 1.5+2.9;2.9 0.1 1.6 ; 1.6 Co-60 0.6* 1.6; 1.6 -4.1 4.1; 4.1 0.8

• 1.5 ; 1.5 Zn-65 -1.5 +/- 3.4 ; 3.4 0.7*5.1 ;5.1 2.3*4.6 ;4.7 ZrlNb-95 -1.4*3.8 ;3.8 0.3*2.7;2.7 -1.2 + 2.4; 2.4 Cs-134 -0.8

• 1.9; 1.9 1.9*3.2 ;3.2 0.0

• 2.0 ; 2.0 Cs-137 0.6 1.7 ; 1.7 -0.3 *3.4; 3.4 -1.1 2.1; 2.1 Ba/La-140 -6.8 1.5; 1.8 -4.1

• 2.9 ; 3.0 -3.2*2.6 ;2.6 2002 Collection October November December Period Lab Code LSW-7640 LSW-8274,5 LSW-8599 Gross Beta 5.34 1.3 ;1.5 7.4* 0.9 ;1.2 6.8 1.3; 1.7 Mn-54 3.6* 3.7 ;3.7 1.44 1.7; 1.7 -0.4 *1.8; 1.8 Fe-59 -4.0

• 6.3 ; 6.3 -0.6

• 2.9 ; 2.9 -1.0 3.0; 3.0 Co-58 -0.9* 3.4 ;3.4 -0.6 + 1.7; 1.7 -1.5

• 1.6; 1.7 Co-60 -0.2 + 3.4; 3.4 0.5+2.1 ;2.1 1.1* 2.2 ; 2.2 Zn-65 -2.4

• 7.8 ; 7.8 -2.4+3.6;3.6 -2.4* 3.8 ;3.8 Zr/Nb-95 -3.3

• 3.4; 3.5 -1.8 + 1.6; 1.7 -0.6

• 1.7; 1.7 Cs-134 0.7* 3.6 ;3.6 -0.8 + 1.9; 1.9 1.4* 1.7; 1.7 Cs-137 1.3+/-3.6;3.6 -0.8 + 1.9; 1.9 -1.2* 2.1 ;2.1 Ba/La-140 -4.7

• 3.6 ; 3.6 6.94 2.1 ;2.3 -1.2 2.6; 2.6 III -27

LASALLE Table 7. Surface Water Collection: Quarterly composites of weekly collections ODCM-Required LLD: H-3 = 200 pCi/L Units: pCi/L 2002 Sample Description and Concentration Collection Period Lab Code Tritium L-21 (C} Illinois River at Seneca 1st Quarter LSW. 2364 94+ 72 ;73 2nd Quarter LSW- 4290 162k 73 ;76 3rd Quarter LSW- 6696 3504 104;115 4th Quarter LSW- 8603 702+/- 112;147 L-40 Illinois River Downstream 1st Quarter LSW- 2365 286+ 81 ;90 2nd Quarter LSW - 4291 108+70;72 3rd Quarter LSW- 6697,8 448A 77; 88 4th Quarter LSW- 8604 827+ 117;162 III -28

LASALLE Table 8. Well Water Collection: Quarterly ODCM- H-3 = 200, Mn-54 = 15, Fe-59 = 30, Co-58 = 15, Co-60 = 15, Zn-65 30, Required LLDs: Zr/Nb-95 = 15, Cs-134 = 15, Cs-137 = 18, Ba/La-140 = 15 pCi/L Units: pCi/L Sample Description and Concentration L-27 LSCS Onsite Well at Station Date Collected 01-10-02 04-11-02 07-11-02 10-03-02 Lab Code LWW-209 LWW-2256 LWW-4604 LWW-6541 H-3 -130+/- 57;60 -25+/- 65; 65 21+/- 67;67 -133+/-65 ;67 Mn-54 2.4 +/-2.7 ;2.7 -0.2 +/- 1.4; 1.4 -0.6 +/- 0.9 ; 0.9 0.5+3.7 ;3.7 Fe-59 -5.14 5.2 ; 5.3 -2.4 4 2.4 ; 2.4 -0.3 +/- 1.8; 1.8 -6.4 + 8.5 ; 8.6 Co-58 -2.7 +/- 2.9 ; 2.9 -0.9 1.3; 1.3 -0.3 + 0.9 ; 0.9 -0.7 + 4.2 ; 4.2 Co-60 1.7+/- 2.7 ;2.7 -1.7 + 1.5; 1.5 -0.2+/- 1.1 ; 1.1 -7.0+/-7.1 ;7.2 Zn-65 0.1 45.0 ; 5.0 -4.2 + 2.3 ; 2.4 1.5+/- 1.8; 1.8 -3.1 + 8.7 ; 8.7 Zr/Nb-95 -1.7 + 2.7; 2.7 1.8+ 1.5; 1.5 -5.3+/-2.1 ;2.2 4.0 + 5.0 ; 5.0 Cs-134 -3.0+/- 3.0 ;3.0 0.5 +/- 1.5 ; 1.5 0.7+/- 1.0; 1.0 -2.5 +/- 4.6 ; 4.6 Cs-137 0.6 +/- 2.8 ; 2.8 -0.8 +/- 1.3 ; 1.3 0.8+/- 1.1 ; 1.1 1.7+4.3 ;4.3 Ba/La-140 0.9+/- 2.7 ;2.7 -2.7 + 1.4; 1.4 -3.7+/-1.3; 1.4 1.3 +/- 4.0 ; 4.0 L-28 Marseilles Well Date Collected 01-10-02 04-11-02 07-11-02 10-03-02 Lab Code LWW-210 LWNV-2257 LWW4605 LWW-6542 H-3 -100+/- 59 ;61 -14+/- 66; 66 -30+ 64 ;64 -1314 65;67 Mn-54 -2.1+/- 2.1 ;2.1 0.3+/- 1.4; 1.4 0.44 0.7 ;0.7 0.64 2.9 ;2.9 Fe-59 0.3+/-4.7 ;4.7 -2.7 3.3; 3.3 -1.7 + 1.5 ; 1.5 0.3 + 6.0 ; 6.0 Co-58 0.2 4 2.9 ; 2.9 -1.4 +/- 1.4 ; 1.4 -0.0 0.7 ; 0.7 1.94 3.5 ;3.5 Co-60 0.5 4 2.6 ; 2.6 1.641.4; 1.4 0.1 +/- 0.7; 0.7 1.5+/- 3.3 ;3.3 Zn-65 -3.2 +/- 4.0 ; 4.0 -3.74 4.2 ;4.3 -1.4 +/- 1.5 ; 1.5 -5.9 6.8; 6.9 Zr/Nb-95 -3.2 +/- 2.9; 3.0 -0.3 1.6; 1.6 0.1+/- 0.8; 0.8 -0.1+/-3.1 ;3.1 Cs-134 0.6 +/- 3.6 ; 3.6 -0.2 + 1.8 ; 1.8 -0.7 + 0.8 ; 0.8 0.6+/- 3.9 ;3.9 Cs-137 0.44 3.2 ;3.2 1.0 +/- 1.8 ; 1.8 -0.2+/- 0.8 ; 0.8 1.9+/- 3.3; 3.3 Ba/La-140 3.342.1 ;2.1 -1.3 1.9; 1.9 -2.5 + 0.8 ; 0.8 -2.8 +/-4.7 ;4.7 III -29

LASALLE MILCH ANIMALS, NEAREST LIVESTOCK, AND NEAREST RESIDENCES CENSUS IH - 30

LASALLE MILCH ANIMALS CENSUS, 2002 L42 Vince Biros Farm 12.6 miles, Sector E 25%pasture 25% ground grain 50% green chop Census conducted by A. Lewis on August 26, 2002 III - 31

LASALLE NEAREST LIVESTOCK CENSUS, 2002 Nearest livestock of the LaSalle Station within a 6.2 mile radius.

Sector Direction -Distance A N 4.0 miles B NNE 1.7 miles C NE 3.5 miles D ENE None E E None F ESE None G SE 4.7 miles H SSE .4.7 miles J S 4.7 miles K SSW None L SW 5.8 miles M WSW None N W 3.0 miles P WNW 3.0 miles Q NW 4.0 miles R NNW 4.6 miles Census conducted by A. Lewis on August 26,2002 III - 32

LASALLE NEAREST RESIDENCE CENSUS, 2002 Nearest resident of the LaSalle Station within a 6.2 mile radius.

Sector Direction Distance A N 3.9 miles B NNE 1.6 miles C NE 2.1 miles D ENE 3.3 miles E E 3.2 miles F ESE 1.4 miles G SE 1.7 miles H SSE 1.8 miles J S. 1.5 miles K SSW 0.7 miles L SW 1.0 miles M WSW 1.5 miles N w 0.8 miles p WNW 0.9 miles Q NW 1.8 miles R NNW 1.7 miles Census conducted by A. Lewis on August 26,2002 III - 33

LASALLE 4.0 TLD DATA*

• TLD Data provided by Exelon Nuclear.

I-34

Exelon Nuclear Environmental Site Report for LaSalle Gamma Radiation Measured in mR by TLDs Site Description Quarter 1 Quarter 2 Quarter 3 Quarter 4 2002 2002 2002 2002 I. INDICATOR LOCATIONS

a. Air Samplers L-01-1 NEARSITE NO. 1 27.0 23.0 20.0 26.0 L-01-2 NEARSITE NO. 1 24.0 23.0 22.0 25.0 L-03-1 ONSITE NO. 3 28.0 24.0 25.0 26.0 L-03-2 ONSITE NO. 3 28.0 22.0 21.0 24.0 L-04-1 RTE. 170 28.0 21.0 21.0 23.0 L-04-2 RTE. 170 24.0 23.0 19.0 23.0 L-05-1 ONSITE NO. 5 26.0 21.0 19.0 26.0 L-05-2 ONSITE NO. 5 26.0 22.0 18.0 24.0 L-06-1 NEARSITE NO. 6 27.0 23.0 33.0 25.0 L46-2 NEARSITE NO. 6 26.0 23.0 19.0 25.0 L-07-1 SENECA 26.0 21.0 22.0 22.0 L-07-2 SENECA 26.0 23.0 22.0 24.0 L-08-1 MARSEILLES 25.0 24.0 18.0 24.0 L-08-2 MARSEILLES 26.0 24.0 19.0 24.0 L-11-1 RANSOM 25.0 19.0 15.0 24.0 L-11-2 RANSOM 24.0 19.0 18.0 21.0 Air Sampler Mean +S. D. 26.0 +/-1.4 22.2 +/-1.6 20.7 +/-4.0 24.1 +/-1.4 Annual Air Sampler Mean +/- S.D. 23.3 +/-3.1

b. Inner Ring (100 Series)

L-101-1 24.0 23.0 21.0 25.0 L-101-2 30.0 23.0 21.0 24.0 L-102-1 25.0 24.0 23.0 28.0 L-102-2 25.0 27.0 23.0 28.0 L-103-1 27.0 22.0 24.0 27.0 L-103-2 24.0 25.0 24.0 26.0 L-104-1 27.0 22.0 24.0 24.0 L-104-2 24.0 22.0 24.0 24.0 L-105-1 27.0 23.0 22.0 26.0 L-105-2 27.0 24.0 26.0 27.0 L-106-1 23.0 22.0 23.0 24.0 L-106-2 24.0 23.0 23.0 23.0 L-107-1 24.0 23.0 24.0 25.0 1-107-2 22.0 26.0 23.0 26.0 k-1 08-1 23.0 25.0 21.0 25.0 1-108-2 21.0 19.0 20.0 20.0 L-109-1 23.0 23.0 23.0 24.0 1-109-2 25.0 24.0 24.0 25.0 1-110-1 28.0 24.0 24.0 26.0 L-110-2 24.0 27.0 24.0 25.0 L-111 B-1 28.0 24.0 24.0 25.0 L-111 B-2 25.0 26.0 23.0 24.0 III-35

Exelon Nuclear Environmental Site Report for LaSalle Gamma Radiation Measured in mR by TLDs Site Descripton Quarter 1 Quarter 2 Quarter 3 Quarter 4 2002 2002 2002 2002

b. Inner Ring (100 Series)

L-112-1 27.0 22.0 20.0 28.0 L-112-2 25.0 23.0 22.0 26.0

-113A-1 29.0 25.0 24.0 26.0 L-1 13A-2 24.0 23.0 25.0 25.0 L-1 14-1 25.0 24.0 24.0 26.0 L-1 14-2 27.0 24.0 25.0 25.0 L-1 15-1 22.0 22.0 22.0 23.0 L-115-2 25.0 20.0 22.0 24.0 L-1 16-1 23.0 21.0 19.0 24.0 L-1 16-2 22.0 21.0 19.0 23.0 Inner Ring Mean S.D. 25.0 +/-2.2 23.3 +/-1.8 22.8 *1.7 25.0 +/-1.7 Annual Inner Ring Mean +/- S.D. 24.0 +/-2.1

c. Outer Ring (200 Series)

L-201-3 20.0 18.0 20.0 20.0 L-201-4 29.0 22.0 20.0 26.0 L-202-3 24.0 20.0 24.0 23.0 L-202-4 21.0 20.0 21.0 22.0 L-203-1 23.0 21.0 20.0 24.0 L-203-2 25.0 24.0 19.0 25.0 L-204-1 26.0 24.0 23.0 29.0 L-204-2 23.0 24.0 20.0 26.0 L-205-1 27.0 23.0 25.0 25.0 L-205-2 23.0 23.0 24.0 25.0 L-205-3 30.0 24.0 22.0 27.0 k-205-4 24.0 23.0 24.0 24.0 L-206-1 23.0 23.0 24.0 26.0 L-206-2 23.0 24.0 21.0 26.0 L-207-1 23.0 22.0 20.0 26.0 L-207-2 27.0 22.0 23.0 24.0 L-208-1 27.0 23.0 24.0 25.0 L-208-2 25.0 24.0 22.0 26.0 L-209-1 30.0 24.0 24.0 25.0 L-209-2 26.0 31.0 23.0 24.0 L-21 0-1 28.0 25.0 26.0 26.0 L-210-2 31.0 25.0 25.0 26.0 L-21 1-1 23.0 24.0 21.0 25.0 L-211-2 25.0 24.0 22.0 25.0 L-212-1 24.0 23.0 22.0 26.0 L-212-2 24.0 26.0 23.0 25.0 L-213-3 23.0 23.0 22.0 25.0 L-213-4 22.0 26.0 24.0 23.0 L-214-3 23.0 24.0 24.0 23.0 L-214-4 23.0 23.0 22.0 24.0 III-36

Exelon Nuclear Environmental Site Report for LaSalle Gamma Radiation Measured in mR by TLDs Site Description Quarter 1 Quarter 2 Quarter 3 Quarter 4 2002 2002 2002 2002 Outer Ring (200 Series)

L-215-3 26.0 24.0 24.0 26.0 L-215-4 23.0 24.0 21.0 25.0 L-216-3 23.0 24.0 24.0 24.0 L-216-4 26.0 23.0 23.0 24.0 Outer Ring Mean +/- S.D. 24.8 +/-2.6 23.4 +/-2.1 22.5 +/-1.8 24.9 +/-1.6 Annual Outer Ring Mean +/- S.D. 23.9 +/-2.3 INDICATOR LOCATION MEAN +/- S.D. 25.1 +2.3 23.1 +/-2.0 22.3 2.5 24.8 +/-1.6 Annual INDICATOR MEAN +/- S.D. 23.8 +/-2.4 II. CONTROL LOCATIONS L-10-1 STREATOR 23.0 22.0 19.0 21.0 L-10-2 STREATOR 24.0 19.0 20.0 22.0 CONTROL LOCATION MEAN +/- S.D. 23.5 +/-0.7 20.5 +/-2.1 19.5 +/-0.7 21.5 +/-0.7 Annual CONTROL LOCATION MEAN +/- S.D. 21.3 +/-0.7 III-37

LASALLE 5.0 GRAPHS OF DATA TRENDS III- 38

Air Particulates - Gross Beta L-01 Nearsite No. I 10.0 8.0 E 6.0 0

9 01 4.0 2.0 0.0 .1--

01-01-98 01-01-99 01-01-00 12-31-00 12-31-01 12-31-02 Figure 1. Continuous collection with weekly exchange of particulate filter.

L-03 Onsite No. 3 10.0 8.0

-E 6.0 C"

9 iu o 4.0 2.0 0.0 - _

01-01-98 01-01-99 01-01-00 12-31-00 12-31-01 12-31-02 Figure 2. Continuous collection with weekly exchange of particulate filter.

I1I-39

Air Particulates - Gross Beta L-05 Onsite No. 5 10.0 8.0 U

6.0 C'

9 wU 40 4.0 2.0 0.0 1--

01-01-98 01-01-99 01-01-00 12-31-00 12-31-01 12-31-02 Figure 3. Continuous collection with weekly exchange of particulate filter.

L-06 Nearsite No. 6 10.0 8.0 6.0 U

9 fit CD 4.0 2.0 0.0 --

01-01-98 01-01-99 01-01-00 12-31-00 12-31-01 12-31-02 Figure 4. Continuous collection with weekly exchange of particulate filter.

III-40

Air Particulates - Gross Beta III-41

Surface Water - Gross Beta L-21 Illinois River at Seneca 10.0 8.0 6.0 C,

0.

4.0 2.0 0.0 -

01-01-98 01-01-99 01-01-00 12-31-00 12-31-01 12-31-02 Figure 6. Monthly composites of weekly collections.

L-40 Illinois River Downstream 10.0

-1 C) 0.

01-01-98 01-01-99 01-01-00 12-31-00 12-31-01 12-31-02 Figure 7. Monthly composites of weekly collections.

m1-42

Surface Water-Tritium L-21 (C) Illinois River at Seneca 800 -

700 +

600 +

500 +

400 +

C.

300 200 +

100 -

01-01-98 01-01-99 01-01-00 12-31-00 12-31-01 12-31-02 Figure 8. Quarterly composites of weekly collections.

L-40 Illinois River Downstream 850 T 700 +

550 +

400-250-100-

-Sn -5 I I 01-01-98 01-01-99 01-01-00 12-31-00 12-31-01 12-31-02 Figure 9. Quarterly composites of weekly collections.

m-43

Well Water-Tritium L-27 LSCS Onsite Well at Station 500 400 300

200 0

-100 +/-

-200 01-01-98 01-01-99 01-01-00 12-31-00 12-31-01 Figure 11. Quarterly collections.

L-28 Marseilles Well 500 400 300 X 200 X 100 0 -

-100 --

-200 01-01-98 01-01-99 01-01-00 12-31-00 12-31-01 Figure 11. Quarterly collections.

IH-44

APPENDIX IV INTERLABORATORY COMPARISON PROGRAM RESULTS Iv- I

Appendix IV lnterlaboratorv Comparison Program Results Environmental, Inc., Midwest Laboratory, formerly Teledyne Brown Engineering Environmental Services Midwest Laboratory has participated in interlaboratory comparison (crosscheck) programs since the formulation of it's quality control program in December 1971. These programs are operated by agencies which supply environmental type samples containing concentrations of radionuclides known to the issuing agency but not to participant laboratories. The purpose of such a program is to provide an independent check on a laboratory's analytical procedures and to alert it of any possible problems.

Participant laboratories measure the concentration of specified radionuclides and report them to the issuing agency. Several months later, the agency reports the known values to the participant laboratories and specifies control limits. Results consistently higher or lower than the known values or outside the control limits indicate a need to check the instruments or procedures used.

Results in Table IV-1 were obtained through participation in the environmental sample crosscheck program administered by Environmental Resources Associates, serving as a replacement for studies conducted previously by the U.S. EPA Environmental Monitoring Systems Laboratory, Las Vegas, Nevada.

The results in Table IV-2 were obtained for Thermoluminescent Dosimeters (TLDs), via Intemational Intercomparison of Environmental Dosimeters under the sponsorships listed in Table A-2. Results of internal laboratory testing is also listed.

Table IV-3 lists results of the analyses on in-house 'spiked" samples for the past twelve months. All samples are prepared using NIST traceable sources. Data for previous years available upon request.

Table IV-4 lists results of the analyses on in-house blank' samples for the past twelve months. Data for previous years available upon request. request.

Table IV-5 list results of the in-house duplicate" program for the past twelve months. Acceptance is based on the difference of the results being less than the sum of the errors. Data for previous years available upon request.

The results in Table IV-6 were obtained through participation in the Mixed Analyte Performance Evaluation Program.

The results in Table IV-7 were obtained through participation in the Environmental Measurement Laboratory Quality Assessment Program.

Attachment A lists acceptance criteria for spiked' samples.

Out-of-limit results are explained directly below the result.

IV2

Attachment A ACCEPTANCE CRITERIA FOR SPIKED" SAMPLES LABORATORY PRECISION: ONE STANDARD DEVIATION VALUES FOR VARIOUS ANALYSES _

One standard deviation Analysis Level for single determination Gamma Emitters 5 to 100 pCi/liter or kg 5.0 pCi/liter

> 100 pCi/liter or kg 5% of known value Strontium-89b 5 to 50 pCiAiter or kg 5.0 pCi/liter

> 50 pCi/liter or kg 10% of known value Strontium_9Ob 2 to 30 pCi/liter or kg 5.0 pCi/liter

> 30 pCiAiter or kg 10% of known value Potassium-40 > 0.1 gliter or kg 5% of known value Gross alpha 20 pCi/liter 5.0 pCiAiter

> 20 pCi/liter 25% of known value Gross beta 100 pCUliter 5.0 pCiAiter

> 100 pCi/liter 5% of known value Tritium 4,000 pCi/liter 1s = (pCi/liter) =

169.85 x (known)0 0 933

> 4,000 pCi/liter 10% of known value Radium-226,-228 0.1 pCiAiter 15% of known value Plutonium 0.1 pCi/liter, gram, or sample 10% of known value Iodine-131, 55 pCi/liter 6.0 pCi/liter lodine-129b > 55 pCi/liter 10% of known value Uranium-238, 35 pCi/liter 6.0 pCiliter Nickel-63b > 35 pCiAiter 15% of known value Technetium_99b Iron-55b 50 to 100 pCi/liter 10 pCi/liter

> 100 pCi/liter 10% of known value Othersb 20% of known value g From EPA publication, Environmental Radioactivity Laboratory Intercomparison Studies Program. Fiscal Year, 1981-1982, EPA-60014-81-004.

b Laboratory limit.

IV3

TABLE IV-1. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA) 3.

Concentration (pCiVL)

Lab Code Date Analysis Laboratory ERA Control Result' Result' Limits STW-940 02/20102 Sr-89 53.0 +/-2.5 55.3 +/- 5.0 46.6 - 64.0 STW-940 02/20/02 Sr-90 16.6 +/-0.5 15.9 +/-5.0 7.2 - 24.6 STW-942 02/20102 Gr. Alpha 6.5 i0.6 8.0 +/- 5.0 0.0 - 16.7 STW-942 02/20/02 Gr. Beta 45.7 +/- 3.1 48.3 +/- 5.0 39.6 - 57.0 STW-944 02/20102 Ba-133 25.8 +/-1.5 28.9 +/- 5.0 20.2 - 37.6 STW-944 02/20/02 Co-60 76.9 +/- 2.7 73.4 +/- 5.0 64.7 - 82.1 STW-944 02/20/02 Cs-134 38.7 +/-1.6 42.1 +/- 5.0 33.4 - 50.8 STW-944 02/20/02 Cs-137 92.9 +/-2.7 88.8 +/- 5.0 80.1 - 97.5 STW-944 02120/02 Ra-226 15.3 i0.7 14.3 +/- 2.2 10.6 - 18.0 STW-944 02120/02 Ra-228 17.5 +/-0.4 16.9 +/-4.2 9.6 - 24.2 STW-944 02/20102 Uranium 23.8 +/-1.1 28.3 +/- 3.0 23.1 - 33.5 STW-944 02/20/02 Zn-65 361.0 +/- 9.2 359.0 +/- 35.9 298.0 - 420.0 STW-951 05/22/02 Gr. Alpha 23.9 +/- 2.5 22.8 +/- 5.7 13.0 - 32.6 STW-951 05/22/02 Ra-226 5.9 +/- 0.5 6.1 +/-0.9 4.5 - 7.7 STW-951 05/22102 Ra-228 5.6 +/-0.9 4.5 +/-1.1 2.6 - 6.5 STW-951 05/22102 Uranium 7.6 +/-0.2 9.3 +/- 3.0 4.1 - 14.5 STW-952 05/22/02 Co-60 37.9 +/- 0.7 39.1 +/-5.0 30.4 - 47.8 STW-952 05/22/02 Cs-134 14.5 +/-0.8 17.1 +/-5.0 8.4 - 25.8 STW-952 05/22/02 Cs-I 37 50.0 +/- 2.0 52.1 +/- 5.0 43.4 - 60.8 STW-952 05/22/02 Gr. Beta 171.0 +/-2.5 189.0 +/- 28.4 140.0 - 238.0 STW-952 05/22/02 Sr-89 28.4 +/- 4.8 31.7 +/- 5.0 23.0 - 40.4 STW-952 05/22/02 Sr-90 32.4 +/-3.1 28.3 +/- 5.0 19.6 - 37.0 STW-953 d 05/22/02 H-3 13900.0 +/- 100.0 17400.0 +/- 1740.0 14400.0 - 20400.0 STW-954 05/22/02 1-131 14.6 +/-0.3 14.7 +/- 2.0 11.2 - 18.2 STW-965 08/21/02 Ba-133 71.9 +/-2.1 80.0 8.0 66.4 - 93.6 STW-965 08121/02 Co-60 23.8 +/- 1.0 23.3 +/- 5.0 14.6 - 32.0 STW-965 08/21/02 Cs-1 34e 62.9 +/- 1.2 71.7 +/- 5.0 63.0 -80.4 STW-965 08/21/02 Cs-1 37 219.3 +/- 10.7 214.0 +/- 10.7 195.0 - 233.0 STW-965 08/21/02 Gr. Alpha 74.4 +/- 0.6 58.8 +/- 14.7 33.5 - 84.1 STW-965 08/21/02 Gr. Beta 26.7 +/- 0.4 21.9 +/- 2.2 13.2 - 30.6 STW-965 08/21/02 Ra-226 5.0 +/- 0.5 5.0 +/- 0.8 3.7 - 6.3 STW-965 08/21/02 Ra-228 6.0 +/- 0.7 4.7 +/- 1.2 2.7 -6.7 STW-965 08/21/02 Sr-89 28.4 +/- 1.5 29.0 i 5.0 20.3 - 37.7 STW-965 08/21/02 Sr-90 36.5 +/- 1.1 36.4 +/- 5.0 27.7 -45.1 STW-965 08/21/02 Uranium 4.1 +/-0.1 5.0 +/- 3.0 0.0 - 10.2 STW-965 08/21/02 Zn-65 92.4 +/- 2.2 95.7 +/- 9.6 79.4 - 112.0 STW-966 11/20/02 Gr. Alpha 9.3 +/- 0.4 12.2 +/- 5.0 3.5 - 20.9 STW-966 11/20/02 Gr. Beta 44.7 +/-1.0 47.0 +/- 5.0 38.3 - 55.7 STW-967 11/20/02 H-3 10100.0 +/- 38.7 10200.0 +/- 1020.0 8440.0 - 12000.0 STW-968 11/20/02 Ra-226 11.6 +/- 0.1 12.1 +/- 1.8 9.0 - 15.2 STW-968 11/20/02 Ra-228 16.0 +/- 1.4 15.1 +/-3.8 8.6 - 21.6 STW-968 11/20/02 Uranium 15.5 +/- 0.5 19.2 +/-3.0 14.0 - 24.4 STW-969 11/20/02 1-131 6.0 +/- 0.4 6.8 +/- 2.0 3.3 - 10.2 Iv1-I

TABLE IV-1. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA)".

Concentration (pCVL)

Lab Code Date Analysis Laboratory ERA Control Resultb Resulte Limits STW-970 11/20/02 Co-60 104.0 +/-7.1 104.0 +/- 5.2 95.0 - 113.0 STW-970 11/20/02 Cs-I 34 48.2 +/-2.3 55.5 +/- 5.0 46.8 - 64.2 S1W-970 11/20/02 Cs-I 37 109.0 +/- 12.6 117.0 +/-5.9 107.0 - 127.0 STW-970 11/20/02 Gr. Beta 252.0 +/- 26.8 288.0 +/- 49.5 244.0 - 416.0 STVV-970 11/20/02 Sr-89 43.2 +/- 0.7 47.6 +/- 5.0 38.9 - 56.3 STW-970 11/20/02 Sr-90 7.5 +/- 0.2 7.6 +/- 5.0 0.0 - 16.2 STW-971 11/20102 Gr. Alpha 74.9 +/- 1.5 103.0 +/-25.8 58.4 - 148.0 STW-971 11/20/02 Ra-226 8.9 0.0 9.1 +/-11.4 6.7 - 11.5 STW-971 11/20/02 Ra-228 15.3 +/- 0.1 17.8 +/-4.5 10.1 - 25.5 STW-971 11/20/02 Uranium 51.7 +/- 1.6 61.7 +/- 6.2 51.0 - 72.4

' Results obtained by Environmental, Inc., Midwest Laboratory as a particpant in the environmental samples crosscheck program operated by Environmental Resources Associates (ERA).

b Unless otherwise Indicated, the laboratory result Is given as the mean standard deviaUon for three determinations.

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

d Analysis was repeated; result of reanalysis: 16114+/-487 pCiVL.

ERA acknowledged an unacceptably high percentage of failure for Cs-1 34 and questoned its own control limits.

No problems were identified In the analysis.

IVI-2

TABLE IV-2. Crosscheck program results; Thermoluminescent Dosimetry, (TLDs).

mR Lab Code TLD Type Date Measurement Known Lab Result Control Value +/- 2 sigma Limits Environmental. Inc.

2001-1 CaSO4: Dy Cards 1212412001 Reader 1, #1 3.98 3.71 +/- 0.12 2.79 - 5.17 2001-1 CaSO4: Dy Cards 12/2412001 Reader 1, #1 3.98 3.38 +/- 0.09 2.79 - 5.17 2001-1 CaSO4: Dy Cards 12/24/2001 Reader 1, #2 7.07 7.89 +/- 0.18 4.95 - 9.19 2001-1 CaSO4: Dy Cards 12/2412001 Reader 1, #2 7.07 7.64 +/- 0.25 4.95 - 9.19 2001-1 CaSO4: Dy Cards 12/24/2001 Reader 1, #3 15.9 18.62 +/- 0.40 11.13 - 20.67 2001-1 CaSO4: Dy Cards 12/24/2001 Reader 1, #3 15.9 19.58 +/-0.12 11.13 - 20.67 2001-1 CaSO4: Dy Cards 12/24/2001 Reader 1, #4 63.61 78.24 +/-1.23 44.53 - 82.69 2001-1 CaSO4: Dy Cards 12/24/2001 Reader 1, #4 63.61 79.89 +/- 2.47 44.53 - 82.69 Environmental. Inc.

2002-1 CaSO4: Dy Cards 5/28/2002 Reader 1,#1 4.84 4.44 +/- 0.16 3.39 - 6.29 2002-1 CaSO4: Dy Cards 5/28/2002 Reader 1,#1 4.84 4.37 +/- 0.20 3.39 - 6.29 2002-1 CaSO4: Dy Cards 5/28/2002 Reader 1, #2 8.60 9.08 +/- 0.14 6.02 - 11.18 2002-1 CaSO4: Dy Cards 5/28/2002 Reader 1,#2 8.60 8.76 +/- 0.16 6.02 - 11.18 2002-1 CaSO4: Dy Cards 5/28/2002 Reader 1,#3 19.34 22.14 +/- 0.27 13.54 - 25.14 2002-1 CaSO4: Dy Cards 5/28/2002 Reader 1,#3 19.34 24.03 +/- 0.30 13.54 - 25.14 2002-1 CaSO4: Dy Cards 5/28/2002 Reader 1,#4 77.36 92.77 +/- 0.58 54.15 - 100.57 2002-1 CaSO4: Dy Cards 5/28/2002 Reader 1,#4 77.36 85.25 +/- 0.37 54.15 - 100.57 Environmental. Inc.

2002-2 CaSO4: Dy Cards 12/13/2002 Reader 1,30 56.73 71.61 +/-1.79 39.71 - 73.75 2002-2 CaSO4: Dy Cards 12/1312002 Reader 1,45a 25.21 33.49 +/- 1.38 17.65 - 32.77 a Precision of the distance (cm) measurement can significantly increase the error. The placement of the card holder on the table could account for the higher error.

2002-2 CaSO4: Dy Cards 12113/2002 Reader 1,60 14.18 17.37 +/- 1.24 9.93 - 18.43 2002-2 CaSO4: Dy Cards 12113/2002 Reader 1,75 9.08 10.65 +/- 1.02 6.36 - 11.80 2002-2 CaSO4: Dy Cards 12/13/2002 Reader 1,90 6.30 6.37 +/- 0.54 4.41 - 8.19 2002-2 CaSO4: Dy Cards 12113/2002 Reader 1,120 3.55 4.60 +/- 0.41 2.49 - 4.62 2002-2 CaSO4: Dy Cards 12113/2002 Reader 1,135 2.80 2.51 +/- 0.23 1.96 - 3.64 2002-2 CaSO4: Dy Cards 12113/2002 Reader 1,150 2.28 2.22 +/- 0.28 1.60 - 2.96

' Control limits are based on Attachment A, Page IV3 of this report.

IV2-1

TABLE IV-3. In-House "Spike' Samples Concentration (pCUL)a Lab Code Sample Date Analysis Laboratory results Known Control Type 2s, n=1b Activity Limits' SPW-11552 Water 1/7/2002 Gr. Alpha 35.33 i 1.83 34.57 17.29 - 51.86 SPW-1 1552 Water 1/7/2002 Gr. Beta 112.62 2.44 107.70 96.93 - 118.47 SPMI-595 Milk 1/31/2002 Cs-1 34 29.63 4.98 27.10 17.10 - 37.10 SPMI-595 Milk 1/31/2002 Cs-137 51.31 7.55 50.89 40.89 - 60.89 SPMI-597 Milk 1/31/2002 Co-60 44.18 +/- 7.76 41.36 31.36 - 51.36 SPMI-597 Milk 1/31/2002 Cs-134 20.15 +/- 5.08 22.59 12.59 - 32.59 SPMI-597 Milk 1/31/2002 Cs-137 54.88 +/- 8.32 50.89 40.89 60.89 SPAP-594 Air Filter 2/6/2002 Gr. Beta 1.58 +/- 0.02 1.55 0.00 - 11.55 SPW-599 Water 2/19/2002 H-3 47607 +/-595 50189 40151 +/-60227 SPMI-1446 Milk 3/8/2002 1-131 (G) 87.84 +/- 11.47 85.20 75.20 - 95.20 SPW-1446 Water 3/8/2002 1-131 82.98 +/- 1.20 85.20 68.16 - 102.24 SPW-1446 Water 3/8/2002 1-131 (G) 92.75 +/- 12.87 85.20 75.20 - 95.20 SPMI-1448 Milk 3/8/2002 1-131 88.00 +/- 1.13 85.20 68.16 - 102.24 SPVE-1444 Vegetation 3/1112002 1-131 (G) 0.39 0.04 0.42 0.25 - 0.58 SPAP-2078 Air Filter 4/8/2002 Gr. Beta 1.43 +/- 0.01 1.55 0.00 - 11.55 SPW-2080 Water 4/5/2002 H-3 49121 +/-608 46912 37530 +/- 56294 SPF-2082 Fish 4/5/2002 Cs-134 0.83 +/- 0.04 0.83 0.50 - 1.16 SPF-2082 Fish 4/5/2002 Cs-137 1.29 +/- 0.07 1.35 0.81 - 1.89 SPMI-2084 Milk 4/8/2002 Cs-134 20.93 +/- 5.82 24.69 14.69 - 34.69 SPMI-2084 Milk 4/8/2002 Cs-137 51.83 +/- 10.23 50.56 40.56 - 60.56 SPMI-2084 Milk 4/8/2002 1-131 87.72 +/- 1.28 88.37 70.70 - 106.04 SPMI-2084 Milk 4/8/2002 1-131 (G) 84.08 +/- 10.75 88.37 78.37 - 98.37 SPMI-2084 Milk 4/8/2002 Sr-90 62.81 +/- 1.99 66.85 53.48 - 80.22 SPW-2115 Water 4/8/2002 1-131 82.42 +/- 1.27 88.37 70.70 - 106.04 SPW-2116 Water 4/8/2002 Co-60 32.47 +/- 5.78 33.09 23.09 - 43.09 SPW-2116 Water 4/8/2002 Cs-134 30.80 +/- 3.60 28.80 18.80 - 38.80 SPW-2116 Water 4/8/2002 Cs-I 37 53.85 +/- 7.07 50.56 40.56 - 60.56 SPW-2116 Water 4/8/2002 1-131 (G) 79.09 +/- 7.58 88.37 78.37 - 98.37 SPW-2116 Water 4/8/2002 Sr-90 70.35 +/- 2.32 66.85 53.48 - 80.22 SPW-2019 Water 5/3/2002 Gr. Alpha 25.89 +/- 1.71 34.57 17.29 - 51.86 SPW-2019 Water 5/3/2002 Gr. Beta 101.19 +/- 2.37 107.70 96.93 - 118.47 SPCH-3064 Charcoal 5/11/2002 1-131 (G) 0.74 +/- 0.04 0.85 0.51 - 1.18 SPW-4682 Water 7/17/2002 H-3 40856 +/-548 46179 36943 +/-55415 SPAP-4685 Air Filter 7/17/2002 Gr. Beta 1.58 +/- 0.02 1.55 0.00 - 11.55 W-71702S Water 7/17/2002 Fe-55 10463.00 +/- 126.00 12200.60 9760.48 - 14640.72 W-71702S Water 07/17/02 H-3 45779 +/-583 46179 36943 +/-55415 W-71702S Water 07/17/02 Ni-63 17.02 +/- 1.50 17.10 10.26 -23.94 SPVE-4910 Vegetation 07/22/02 Sr-90 10.22 +/- 0.80 9.04 0.00 -19.04 W-72302S Water 07/23/02 Sr-90 21.43 0.97 26.55 16.55 - 36.55 W-80102S Water 08/01/02 Gr. Alpha 41.25 +/- 4.58 34.45 17.23 - 51.68 W-80102S Water 08/01/02 Gr. Beta 113.66 +/- 5.30 107.70 96.93 - 118.47 W-80202S Water 08/02102 Tc-99 16.39 0.72 14.13 2.13 - 26.13 SPW-7188 Water 10/25/02 Fe-55 20396 +/- 265 22778 18222 -27334 SPW-7190 Water 10/25/02 Ni-63 227.18 +/- 11.60 170.80 102.48 -239.12 IV3-1

TABLE IV-3. In-House Spike" Samples Concentration (pCVL)

Lab Code Sample Date Analysis Laboratory results Known Control Type 2s, n=l1 b Activity Limits' SPW-7192 Water 10125/02 H-3 96310 871 90963 72770 -109156 SPW-7194 Water 10/25102 C-14 42938 167 49661 29796 -69525 SPAP-7198 Air Filter 10/25102 Gr. Beta 1.65 +/-0.02 1.53 0.00-11.53 SPW-7335 Water 10/30/02 Co-60 39.67 +/- 7.38 37.05 27.05 - 47.05 SPW-7335 Water 10130/02 Cs-134 33.09 +/- 5.96 34.11 24.11 -44.11 SPW-7335 Water 10/30/02 Cs-I 37 46.80 +/- 10.39 49.90 39.90 - 59.90 SPMI-7336 Milk 10/30/02 Cs-134 34.40 +/-4.99 34.11 24.11 -44.11 SPMI-7336 Milk 10/30/02 Cs-I 37 46.52 +/- 8.52 49.91 39.91 -59.91 SPF-7340 Fish 10/30/02 Cs-134 0.66 +/- 0.03 0.68 0.41 - 0.95 SPF-7340 Fish 10/30/02 Cs-137 1.35 +/- 0.05 1.33 0.80 - 1.86 SPS-8102 Sediment 11/01/02 Sr-90 14.69 +/- 0.67 13.45 3.45 -23A5 a Results are reported in units of pCi/L, except for air filters (pCVFilter), food products, vegetation, soil, sediment (pCi/g).

b Results are based on single determinations.

' Control limits are based on Attachment A, Page IV3 of this report.

NOTE: For fish, Jello is used for the Spike matrix. For Vegetation, cabbage Is used for the Spike matrix.

IV3-2

TABLE IV-4. In-House "Blankw Samples Concentration (pCVL)a Lab Code Sample Date Analysis Laboratory results (4.66a) Acceptance Type LLD Activityb Criteria (4.66 a)

SPW-1 1551 water 117/2002 Gr. Alpha 0.47 0.45 0.39 1 SPW-1 1551 water 1/7/2002 Gr. Beta 1.37 0.55

• 1.03 3.2 SPAP-590 Air Filter 1/31/2002 Co-60 1.78 100 SPAP-590 Air Filter 1/31/2002 Cs-1 34 3.42 100 SPAP-590 Air Filter 1/31/2002 Cs-I 37 2.33 100 SPAP-590 Air Filter 1/31/2002 Gr. Beta 0.74 -0.096 +/- 0.38 3.2 SPMI-596 Milk 1/31/2002 Co-60 3.54 10 SPMI-596 Milk 1/31/2002 Cs-134 3.24 10 SPMI-596 Milk 1/31/2002 Cs-137 3.89 10 SPMI-596 Milk 1/31/2002 K-40 1472.1 +/- 101.50 0 SPW-598 water 1/31/2002 Co-60 2.30 10 SPW-598 water 1/31/2002 Cs-134 3.74 10 SPW-598 water 1/31/2002 Cs-137 3.23 10 SPW-600 water 1/31/2002 H-3 138.80 -96.5 +/- 63.40 200 SPMI-1447 Milk 3/7/2002 1-131(G) 7.63 20 SPVE-1443 Vegetation 3/8/2002 1-131 (G) 0.02 20 SPW-1445 water 3/8/2002 Co-60 2.76 10 SPW-1445 water 3/8/2002 Cs-134 2.87 10 SPW-1445 water 3/812002 Cs-I 37 4.34 10 SPW-1445 water 3/8/2002 1-131 0.45 0.17 +/- 0.31 0.5 SPW-1445 water 3/8/2002 1-131(G) 6.50 20 SPMI-1447 Milk 3/8/2002 1-131 0.31 0.15 +/- 0.22 0.5 SPAP-2077 Air Filter 4/8/2002 Gr. Beta 0.32 -0.055 +/- 0.19 3.2 SPW-2079 water 4/5/2002 H-3 134.17 16.13 +/- 67.39 200 SPF-2081 Fish 4/5/2002 Cs-134 7.67 100 SPF-2081 Fish 4/5/2002 Cs-I 37 9.54 100 SPMI-2083 Milk 418/2002 Cs-134 2.90 10 SPMI-2083 Milk 418/2002 Cs-137 3.03 10 SPMI-2083 Milk 4/8/2002 1-131 0.52 -0.38 +/- 0.34 0.5 SPMI-2083 Milkc 4/8/2002 Sr-90 OA8 1.29 +/- 0.36 1 SPW-2115 water 4/8/2002 Co-60 1.49 10 SPW-2115 water 4/8/2002 Cs-134 2.09 10 SPW-2115 water 4/8/2002 Cs-137 3.78 10 SPW-2115 water 4/8/2002 1-131 0.50 -0.16 +/- 0.33 0.5 SPW-2115 water 4/812002 1-131 (G) 3.30 20 SPW-2115 water 4/8/2002 Sr-90 0.66 0.10 +/- 0.32 1 SPW-2018 water. 4/22/2002 Gr. Alpha 0.56 -0.24 +/- 0.38 1 SPW-2018 water 4/22/2002 Gr. Beta 1.38 3.19 +/- 1.03 3.2 SPch-3063 Charcoal 5/11/2002 1-131 (G) 8.27 9.6 SPW-4683 water 7/17/2002 H-3 129.00 -62.8 +/- 60.30 200 W-71702 water 7/17/2002 Fe-55 33.61 -1.72 +/- 15.63 1000 W-71702 water 7/17/2002 Ni-63 2.56 0.71 +/- 1.37 20 W-71802B water 7/18/2002 Gr. Alpha 0.48 0.31 +/-0.36 1 W-71802B water 7/18/2002 Gr. Beta 1.33 0.9 0.95 3.2 IV4-1

TABLE IV-4. In-House Blank" Samples Concentration (pCVL)a Lab Code Sample Date Analysis Laboratory results (4.66cr) Acceptance Type LLD Activityb Criteria (4.66 a)

W-72302 water 7/23/2002 Sr-90 0.27 0.027 i 0.13 I W-80202 water 8/2/2002 Tc-99 0.34 -0.051 +/- 0.16 10 SPW-7189 water 10/25/2002 Fe-55 978.21 21.77 +/- 595.33 1000 SPW-7191 water 10/25/2002 Ni-63 11.74 4.47 i 7.24 20 SPW-7193 water 10/25/2002 H-3 146.00 -92 +/- 65.00 200 SPAP-7199 Air Filter 10/25/2002 Gr. Beta 0.00 -0.0024 +/- 0.00 3.2 SPMI-7333 Milk 10/30/2002 Cs-134 5.30 10 SPMI-7333 Milk 10/30/2002 Cs-137 4.80 10 SPW-7334 water 10/30/2002 Co-60 3.69 10 SPW-7334 water 10/30/2002 Cs-1 34 5.37 10 SPW-7334 water 10/30/2002 Cs-1 37 3.90 10 SPF-7339 Fish 10/30/2002 Cs-i 34 4.69 100 SPF-7339 Fish 10/30/2002 Cs-I 37 11.18 100 a Liquid sample results are reported In pCilUter, air filters( pCifilter), charcoal (pCi/charcoal canister), and solid samples (pCUkg).

b The activity reported Isthe net acUvity result.

' Low levels of Sr-90 are still detected In the environment. A concentrabon of (1-5 pCVL) In milk Isnot unusual.

IV4-2

TABLE IV-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result CF-20, 21 112/2002 Be-7 0.47 i 0.25 0.37 +/- 0.12 0.42 0.14 CF-20, 21 112/2002 Gr. Beta 7.82 i 0.20 7.95 +/- 0.21 7.89 +/- 0.14 CF-20, 21 112/2002 K-40 6.65 +/- 0.55 6.53 +/- 0.36 6.59 +/- 0.33 CF-20, 21 112/2002 Sr-90 0.01 +/-0.01 0.01 +/-0.01 0.01 +/- 0.00 AP-11804,11805 1/212002 Be-7 0.054 i0.011 0.049 +/- 0.019 0.052 +/- 0.011 AP-11825,11826 1/212002 Be-7 0.053 +/- 0.013 0.043 +/- 0.013 0.048 +/- 0.009 AP-11846,11847 11212002 Be-7 0.054 +/- 0.018 0.048 +/- 0.016 0.051 +/- 0.012 WW-150,151 1/7/2002 Gr. Beta 1.26 +/- 0.50 1.04 +/- 0.46 1.15 +/- 0.34 MI-124,125 1/8/2002 K-40 1332.30 +/- 158.90 1271.70 +/- 151.50 1302.00 +/- 109.77 W-172,173 118/2002 H-3 153.00 +/- 68.00 148.00 +/- 68.00 150.50 +/- 48.08 SW-11698,11699 1/8/2002 Gr. Alpha 2.51 +/- 1.36 3.71 +/- 1.80 3.11 +/-1.13 SW-11698,11699 1/8/2002 Gr. Beta 7.68 +/- 1.33 8.49 +/- 1A3 8.09 0.98 U-275, 276 1/10/2002 Gr. Alpha 1A0 +/- 1.00 1.10 +/- 1.20 1.25 +/- 0.78 LW-356,357 1/16/2002 Gr. Beta 3A7 +/- 0.65 2.94 +/- 0.61 3.21 +/- 0.45 LW-377,378 1116/2002 Gr. Beta 2.75 +/- 0.68 2.84 +/- 0.61 2.79 +/- 0.46 SW-525, 526 1130/2002 Gr. Alpha 0.56 +/- 0.35 0.24 +/- 0.35 0.40 +/- 0.25 SW-525, 526 1130/2002 Gr. Beta 2.29 +/- 0.41 2.58 +/- 0.39 2.43 +/- 0.28 DW-504,505 1/31/2002 Gr. Alpha 2.30 +/- 1.70 3.90 +/- 1.40 3.10 +/-1.10 MI-649, 650 2/5/2002 K-40 1319.40 +/- 176.70 1210.80 +/- 118.20 1265.10 +/- 106.29 DW-697,698 2/6/2002 Gr. Beta 5.10 +/- 1.20 4.70 +/- 1.20 4.90 +/- 0.85 DW-927, 928 2/8/2002 Sr-90 0.69 +/- 0.29 0.71 +/- 0.29 0.70 +/- 0.21 W-973,974 2/18/2002 Fe-55 7.29 +/- 0.97 6.86 +/- 0.94 7.08 +/- 0.68 W-1673,1674 2/25/2002 H-3 2640.00 +/- 155.00 2908.00 +/- 161.00 2774.00 +/- 111.74 SWT-1395,1396 2/26/2002 Gr. Beta 2.96 +/- 0.59 2.29 +/- 0.53 2.63 +/- 0.40 MI-1268,1269 2/27/2002 K-40 1460.50 +/- 162.50 1573.00 +/- 168.00 1516.75 +/- 116.87 MI-1268,1269 2/27/2002 Sr-90 0.77 +/- 0.36 0.95 +/- OAO 0.86 +/- 0.27 MI-1332,1333 3/5/2002 K-40 1503.00 +/- 164.00 1305.00 +/- 168.00 1404.00 +/- 117.39 MI-1332,1333 3/5/2002 Sr-90 1.35 +/- 0.38 1.07 +/- 0.40 1.21 +/- 0.28 MI-1458,1459 3/6/2002 K-40 1411.70 +/- 166.70 1390.00 +/- 172.30 1400.85 +/- 119.87 DW-10100, 10101 31912002 Gr. Alpha 4.10 +/-1.70 1.80 +/- 1.60 2.95 +/- 1.17 DW-10111, 10112 319/2002 Gr. Alpha 7.10 +/- 2.00 8.30 +/- 2.30 7.70 +/- 1.52 MI-1521,1522 3/11/2002 K-40 1270.80 +/- 103.30 1369.10 +/- 121.60 1319.95 +/- 79.78 MI-1521,1522 3/11/2002 Sr-90 1.69 +/- 0.46 2.46 +/- 0.49 2.07 +/- 0.34 MI-1541,1542 311112002 K-40 1562.20 +/- 122.80 1529.30 +/- 126.10 1545.75 +/- 88.01 MI-1541,1542 3/11/2002 Sr-90 0.85 +/- 0.57 1.48 +/- 0.43 1.16 +/- 0.36 LW-1 651, 1652 3/1412002 Gr. Beta 2.90 +/- 0.57 2.57 +/- 0.56 2.74 +/-0.40 DW-10134,10135 3/16/2002 Gr. Alpha 5.60 +/- 1.90 5AO +/- 1.60 5.50 +/- 1.24 WW-1 694,1695 3/18/2002 Gr. Beta 1.79 +/- 0.59 1.53 +/- 0.50 1.66 +/- 0.39 SO-1715,1716 311912002 Cs-I 37 0.03 +/- 0.01 0.02 +/- 0.01 0.03 +/- 0.01 SO-1715,1716 3/19/2002 Gr. Beta 18.50 +/- 1.70 19.10 +/- 1.70 18.80 1.20 DW-10302,10303 3/2012002 Gr. Alpha 2.30 +/- 1 A0 3.30 +/- 1.60 2.80 +/- 1.06 W-1758,1759 3/25/2002 Gr. Alpha 2.50 +/- 0.70 2.30 +/- 0.60 2.40 +/- 0.46 W-1758,1759 3/25/2002 Gr. Beta 4.10 +/- 1.20 2.50 +/- 1.10 3.30 +/- 0.81 IV5-1

TABLE IV-5. In-House "Duplicate' Samples Concentration (pCVL)'

Averaged Lab Code Date Analysis First Result Second Result Result MI-1926,1927 3/26/2002 K-40 1414.00 +/- 115.00 1316.00 i 128.00 1365.00 +/- 86.04 MI-1926,1927 3/26/2002 Sr-90 2.30 +/- 0.70 2.40 +/- 0.70 2.35 +/- 0.49 SWU-2010, 2011 3/26/2002 Gr. Beta 2.90 +/- 0.60 2.20 i 0.50 2.55 +/- 0.39 DW-10376, 10377 3/27/2002 Gr. Beta 10.50 +/- 1.30 10.10 +/-1.50 10.30 i 0.99 AP-2479, 2480 3/28/2002 Be-7 0.064 +/- 0.023 0.068 +/-0.014 0.066 +/- 0.013 DW-10395,10396 3/29/2002 Gr. Alpha 10.20 +/- 2.10 14.60 +/-2.40 12.40 1.59 LW-2181. 2182 3/31/2002 Gr. Beta 2.98 +/- 0.68 1.99 i 0.70 2.48 i0.49 LW-2181, 2182 3/3112002 H-3 2694.43 +/- 156.53 2688.84 +/-156AO 2691.64 i 110.64 CW-2437, 2438 3/31/2002 Gr. Beta 1.09 +/- 0.61 1.14 +/- 0.58 1.11 i 0.42 CW-2437, 2438 3/31/2002 H-3 6456.70 +/- 229.20 6292.80 +/- 226.52 6374.75 i 161.12 MI-1947,1948 4/1/2002 K-40 1421.40 +/- 130.90 1256.80 +/- 104.20 1339.10 i 83.65 AP-2458, 2459 4/1/2002 Be-7 0.077 +/- 0.011 0.081 +/- 0.010 0.079 +/- 0.008 DW-10409,10410 4/11/2002 Gr. Alpha 39.30 +/- 4.00 35.30 +/- 3.60 37.30 +/- 2.69 MI-2052, 2053 4/3/2002 K-40 1283.70 +/- 103.20 1434.80 +/- 147.90 1359.25 +/- 90.17 MI-2052, 2053 4/3/2002 Sr-90 0.81 +/- 0.36 0.75 +/- 0.35 0.78 +/- 0.25 AP-2711, 2712 4/3/2002 Be-7 0.071 +/- 0.01 0.07 +/- 0.01 0.07 +/- 0.01 W-938,939 4/9/2002 Ni-63 1.73 +/- 0.10 1.82 +/- 0.10 1.78 +/- 0.07 SS-2202,2203 4/9/2002 Gr. Beta 5.83 +/- 1.16 5.52 +/- 1.19 5.67 +/- 0.83 SS-2202, 2203 4/9/2002 K-40 5.75 +/- 0.48 6.11 +/- 0.51 5.93 +/- 0.35 F-2307, 2308 4/10/2002 K-40 2.75 +/- 0.27 2.49 +/- 0.32 2.62 +/- 0.21 DW-10476,10477 4/12/2002 Gr. Alpha 5.10 +/- 1.30 3.90 +/- 1.60 4.50 +/- 1.03 W-2244, 2245 4/15/2002 Gr. Beta 1.70 +/- 1.10 1.60 +/- 1.00 1.65 +/- 0.74 DW-10509,10510 4/17/2002 Gr. Alpha 6.00 +/- 2.00 7.30 +/- 1.80 6.65 +/- 1.35 SW-2690, 2691 4/24/2002 Gr. Beta 2.25 +/- 0.68 2.15 +/- 0.59 2.20 +/- 0.45 SO-2903, 2904 4/24/2002 Be-7 1.22 +/- 0.57 0.78 +/- 0.43 1.00 +/- 0.36 SO-2903, 2904 4/24/2002 Cs-1 37 0.13 +/- 0.05 0.09 +/- 0.05 0.11 +/- 0.04 SO-2903, 2904 4/24/2002 K-40 21.06 +/- 1.48 19.91 +/-1.16 20.48 +/- 0.94 DW-10562,10563 4/24/2002 Gr. Alpha 2.17 +/- 1.13 3.25 +/-1.54 2.71 +/- 0.96 DW-10578,10579 4/29/2002 Gr. Alpha 8.20 +/- 2.20 7.40 +/- 2.00 7.80 +/- 1.49 SO-2861, 2862 4/30/2002 Cs-1 37 236.40 +/- 46.00 200.70 +/- 52.60 218.55 +/- 34.94 SO-2861, 2862 4/30/2002 K-40 10191.00 +/- 784.60 11025.00 +/- 941.30 10608.00 +/- 612.71 SL-2819,2820 5/11/2002 Be-7 805.70 +/- 301.50 860.73 +/- 164.80 833.22 +/- 171.80 SL-2819,2820 5/112002 Gr. Beta 5566.00 +/- 124.00 5359.00 +/- 122.00 5462.50 +/- 86.98 SL-2819,2820 5/1/2002 K-40 5524.00 +/- 632.90 5277.50 +/- 431.40 5400.75 +/- 382.97 SL-2840,2841 5/112002 Be-7 1010.00 +/-352.10 872.95 +/- 181.70 941.48 +/- 198.11 SL-2840,2841 5/112002 Gr. Beta 4399.00 +/-221.80 4593.00 +/- 276.00 4496.00 +/- 177.04 SL-2840,2841 5/1/2002 K-40 2422.80 +/- 352.10 2254.10 +/- 371.40 2338.45 +/- 255.89 MI-2971, 2972 5/512002 K-40 1338.90 +/- 83.44 1345.80 +/- 100.90 1342.35 +/- 65.47 MI-2971, 2972 5/5/2002 Sr-90 0.83 +/- 0.47 1.65 +/- 0.46 1.24 +/- 0.33 DW-10603,10604 5/6/2002 Gr. Alpha 6.30 +/- 1.70 5.50 +/- 1.60 5.90 +/- 1.17 SS-3037, 3038 5/9/2002 K-40 11585.00 +/- 749.00 11612.00 i787.00 11598.50 +/- 543.22 MI-3124, 3125 511312002 K-40 1329.50 +/- 103.80 1373.00 +/- 107.40 1351.25 +/- 74.68 MI-3208, 3209 5/14/2002 K-40 1494.60 +/- 158.40 1462.60 + 182.50 1478.60 i 120.83 LW-3250,3251 5/15/2002 Gr. Beta 3.14 +/- 0.55 3.28 +/- 0.63 3.21 i0.42 IV5-2

TABLE IV-5. In-House "Duplicate" Samples Concentration (pCVL) 8 Averaged Lab Code Date Analysis First Result Second Result Result CF-3292,3293 5/20/2002 K-40 1.33 +/- 0.99 1.14 +/- 0.91 1.23 +/- 0.67 MI-3376, 3377 5/26/2002 K-40 1333.30 +/-159.40 1090.70 +/- 143AO 1212.00 +/- 107.21 MI-3418,3419 5/28/2002 K-40 1423.70 +/-121.30 1443.30 +/- 164.30 1433.50 +/- 102.11 SWT-3461, 3462 5/28/2002 Gr. Beta 2.65 +/- 0.54 3.28 +/- 0.60 2.97 +/- 0.40 SO-3503,3504 5/29/2002 Cs-137 0.17 +/- 0.04 0.18 +/- 0.05 0.18 +/- 0.03 SO-3503, 3504 5129/2002 Gr. Beta 27.72-+/- 2.26 25.45 +/- 2.03 26.58 +/- 1.52 S0-3503, 3504 5/29/2002 K-40 20.24 +/- 1.19 20.54 +/- 1.24 20.39 0.86 SL-3545,3546 6/3/2002 Gr. Beta 4436.00 +/- 90.00 4281.00 +/- 89.00 4358.50 +/- 63.29 SL-3545, 3546 6/3/2002 K-40 4684.20 +/- 734.40 5242.50 +/- 884.50 4963.35 +/- 574.82 DW-10754.10755 6/6/2002 Sr-90 0.50 +/- 0.30 0.60 +/- 0.30 0.55 +/- 0.21 SW-3777, 3778 6/11/2002 Gr. Alpha 4.42 +/- 1.50 2.97 +/- 1.40 3.70 +/- 1.02 SW-3777,3778 6/11/2002 Gr. Beta 7.57 +/- 1.22 6.83 +/- 1.16 7.20 +/- 0.84 MI-3798, 3799 6/11/2002 K-40 1433.40 +/- 124.20 1401.20 +/- 96.96 1417.30 +/- 78.78 LW-3924, 3925 6/13/2002 Gr. Beta 3.05 +/- 0.59 3.38 +/- 0.72 3.21 +/- 0.46 MI-3966, 3967 6/18/2002 K-40 1245.20 +/- 109.20 1340.20 +/- 121.90 1292.70 +/- 81.83 MI-3966, 3967 6/18/2002 Sr-90 2.38 +/- 0.51 2.63 +/- 0.52 2.51 +/- 0.36 MI-3987,3988 6/19/2002 Sr-90 0.98 +/- 0.35 0.97 +/- 0.35 0.98 +/- 0.25 MI-4095,4096 6/25/2002 K-40 1256.10 +/- 138.20 1199.00 +/- 128.30 1227.55 +/- 94.29 SWU-4221,4222 6/25/2002 Gr. Beta 6.89 +/- 1.97 5.38 +/- 1.93 6.13 +/- 1.38 LW-4179,4180 6/27/2002 Gr. Beta 2.37 +/- 0.58 2.00 +/- 0.62 2.19 +/- 0.42 G-4329,4330 7/1/2002 Be-7 1394.80 +/- 538.40 1098.10 +/- 437.40 1246.45 +/- 346.84 G-4329,4330 7/1/2002 Gr. Beta 8.10 +/- 0.27 8.00 +/- 0.25 8.05 +/- 0.18 G-4329,4330 7/1/2002 K-40 7758.20 +/- 1100.00 8399.80 +/- 929.30 8079.00 +/- 720.00 SL-4337,4338 7/1/2002 Be-7 1480.90 +/- 223.80 1726.40 +/- 552.60 1603.65 +/- 298.10 SL-4337,4338 7/1/2002 Cs-I 37 32.30 +/- 14.70 50.97 +/- 27.10 41.64 +/- 15.42 SL-4337,4338 7/1/2002 Gr. Beta 5262.40 +/- 522.10 5432.40 +/- 540.00 5347.40 +/- 375.56 SL-4337,4338 7/1/2002 K-40 2249.00 +/- 381.90 2989.90 +/- 509.60 2619.45 +/- 318.41 AP-4864,4865 7/1/2002 Be-7 0.085 +/- 0.009 0.085 +/- 0.006 0.085 +/- 0.006 MI-4359,4360 7/2/2002 K40 1390.10 +/- 168.30 1567AO +/- 194.30 1478.75 +/- 128.53 AP-4569,4570 7/2/2002 Be-7 0.068 +/- 0.016 0.086 +/- 0.018 0.077 +/- 0.012 AP-4843,4844 7/2/2002 Be-7 0.077 +/- 0.016 0.090 +/- 0.020 0.084 +/- 0.013 AP-4789,4790 7/3/2002 Be-7 0.080 +/- 0.013 0.078 +/- 0.015 0.079 +/- 0.010 SWU-4810,4811 7/3/2002 Gr. Beta 2.40 +/- 0.84 2.47 +/- 0.88 2.43 +/- 0.61 MI-4548,4549 7/9/2002 K-40 1511.80 +/- 127.00 1446.80 +/- 101.80 1479.30 +/- 81.38 DW-4737,4738 7/1212002 1-131 0.52 +/- 0.20 0.49 +/- 0.29 0.51 +/- 0.18 MI-4632,4633 7/15/2002 K-40 1198.40 +/-114.10 1371.30 +/- 146.90 1284.85 +/- 93.00 MI-5054, 5055 7/30/2002 K-40 1428.80 +/- 105.60 1344.30 +/- 106.40 1386.55 +/- 74.95 G-5075,5076 7/30/2002 Gr. Beta 7.11 +/- 0.07 6.99 +/- 0.07 7.05 +/- 0.05 SWU-5124, 5125 7/30/2002 Gr. Beta 1.75 +/- 0.84 1.90 +/- 0.78 1.82 +/- 0.57 G-5151, 5152 7/31/2002 Be-7 1.82 +/- 0.30 2.05 +/- 0.32 1.93 +/- 0.22 G-5151,5152 7/31/2002 K-40 5.13 +/- 0.66 5.72 +/- 0.70 5.42 +/- 0.48 MI-5103,5104 8/2/2002 K-40 1415.90 +/- 70.57 1423.80 +/- 129.20 1419.85 +/- 73.61 LW-5434, 5435 8/5/2002 Gr. Beta 2.77 +/- 0.35 2.26 +/- 0.35 2.52 +/- 0.25 MI-5215,5216 8/7/2002 K-40 1361.10 +/- 111.90 1358.30 +/- 115.80 1359.70 +/- 80.52 IV5-3

TABLE IV-5. In-House "Duplicate Samples

• Concentration (pCIL)r Averaged Lab Code Date Analysis First Result Second Result Result MI-5355, 5356 8113/2002 K-40 1405.00 165.80 1549.30 +/- 114.40 1477.15 +/- 100.72 F-5413, 5414 8/1512002 Gr. Beta 2.37 +/- 0.10 2.55 +/- 0.10 2.46 +/-0.07 F-5413, 5414 8/15/2002 K-40 1.47 +/- 0.32 1.73 +/- 0.43 1.60 +/- 0.27 MI-5603, 5604 8/26/2002 1-131 0.64 +/- 0.34 0.52 +/- 0.36 0.58 +/- 0.25 MI-5603, 5604 8126/2002 K-40 1353.60 +/- 83.13 1261.40 +/- 117.80 1307.50 +/-72.09 MI-5578, 5579 8/2712002 K-40 1301.50 +/- 161.70 1381.60 +/- 111.20 1341.55 +/-98.12 VE-5682, 5683 8/28/2002 Be-7 0.29 +/- 0.10 0.25 +/- 0.11 0.27 +/- 0.08 VE-5682, 5683 8/28/2002 Gr. Beta 3.79 +/- 0.08 3.80 +/- 0.08 3.79 +/-0.06 VE-5682, 5683 8/28/2002 K-40 3.06 +/- 0.29 3.31 +/-OA2 3.18 i 0.25 WW-6188, 6189 8/31/2002 Gr. Beta 2.70 +/- 0.57 2.30 +/- 0.57 2.50 +/- 0.41 SL-5724, 5725 9/3/2002 Be-7 0.92 +/- 0.19 1.04 +/- 0.23 0.98 +/- 0.15 SL-5724, 5725 91312002 Cs-1 37 0.05 +/- 0.02 0.05 +/- 0.02 0.05 +/- 0.01 SL-5724, 5725 913/2002 K-40 2.09 +/- 0.31 2.28 +/- 0.48 2.19 +/- 0.29 MI-5877, 5878 9/9/2002 K-40 1340.70 +/- 165.00 1168.50 +/- 172.50 1254.60 +/- 119.35 MI-6157, 6158 9/19/2002 K-40 1372.10 +/- 115.10 1136.50 +/- 222.70 1254.30 +/- 125.34 MI-6258, 6259 9/24/2002 K-40 1328.60 +/- 201.00 1312.60 +/- 118.60 1320.60 +/- 116.69 LW-6278, 6279 9130/2002 Gr. Beta 2.15 +/- 0.51 1.70 +/- 0.50 1.93 +/- 0.36 MI-6385, 6386 10/1/2002 K-40 1297.10 +/- 168.90 1310.10 +/- 128.30 1303.60 +/- 106.05 BS-6453, 6454 10/112002 Cs-1 37 0.43 +/- 0.03 OA4 +/- 0.03 0.44 +/- 0.02 BS-6453, 6454 10/1/2002 K-40 16.50 +/- 0.51 16.80 +/- 0.61 16.65 +/- 0.40 S0-6478, 6479 1011/2002 Cs-137 0.074 +/- 0.016 0.070 +/- 0.016 0.072 +/- 0.011 S0-6478, 6479 1011/2002 Gr. Alpha 8.01 +/- 4.36 7.55 +/- 4.57 7.78 +/- 3.16 S0-6478, 6479 1011/2002 Gr. Beta 30.41 +/-4.07 33.04 +/- 4.28 31.73 +/- 2.95 SO-6478,6479 10/1/2002 K-40 19.82 +/- 0.53 20.39 +/- 0.58 20.10 +/-0.39 S0-6478, 6479 10/1/2002 Sr-90 0.087 +/- 0.017 0.094 +/- 0.020 0.091 +/- 0.013 AP-6641, 6642 10/1/2002 Be-7 0.070 +/- 0.016 0.080 +/- 0.015 0.075 +/- 0.011 MI-6544, 6545 10/2/2002 K-40 1331.60 +/- 125.20 1326.50 +/- 171.60 1329.05 +/- 106.21 AP-6857, 6858 1013/2002 Be-7 0.062 +/- 0.015 0.071 +/- 0.015 0.066 +/- 0.010 AP-6857, 6858 10/3/2002 Be-7 0.062 +/- 0.015 0.071 +/- 0.015 0.066 +/- 0.010 AP-6857, 6858 10/3/2002 Be-7 0.062 +/- 0.015 0.071 +/- 0.015 0.066 +/- 0.010 BS-6620, 6621 10/7/2002 Co-60 0.090 +/- 0.020 0.11 +/- 0.02 0.10 +/- 0.01 BS-6620, 6621 10/7/2002 Cs-I 37 0.62 +/- 0.04 0.63 +/- 0.03 0.62 +/- 0.02 BS-6620, 6621 10/7/2002 K-40 11.38 +/- 0.48 10.78 +/- 0.52 11.08 +/- 0.35 MI-6651, 6652 1018/2002 K-40 1565.50 +/- 141.00 1640.60 +/- 189.20 1603.05 +/- 117.98 G-6760, 6761 1019/2002 Be-7 2.17 +/- 0.49 2.31 +/- 0.34 2.24 +/- 0.30 G-6760, 6761 10/9/2002 K-40 6.24 +/- 1.00 6.61 +/- 0.60 6.42 +/- 0.58 SWU-7054, 7055 10/10/2002 Gr. Beta 3.09 +/- 0.57 2.06 +/- 0.52 2.57 +/- 0.39 U-7126, 7127 10/11/2002 Gr. Beta 2.61 +/- 1.24 2.61 +/- 1.08 2.61 +/- 0.82 XW-7768, 7769 10/14/2002 Cs-1 37 2.25 +/- 0.25 2.09 +/- 0.18 2.17 +/- 0.15 XW-7768, 7769 10/14/2002 H-3 2.63 +/- 0.10 2.64 +/- 0.10 2.64 +/- 0.07 F-7148, 7149 10/15/2002 K-40 2.57 +/- 0.28 2.98 +/- 0.44 2.77 +/- 0.26 BS-7337, 7338 10/23/2002 Co-60 0.083 +/- 0.025 0.073 +/- 0.031 0.078 +/- 0.020 BS-7337, 7338 10/23/2002 Cs-137 0.082 +/- 0.019 0.11 +/-0.04 0.10 +/- 0.02 BS-7337, 7338 10/23/2002 Gr. Beta 12.54 +/- 2.34 12.99 +/- 2.22 12.77 +/- 1.61 SO-7407, 7408 10/29/2002 Cs-I 37 0.14 0.03 0.15 +/- 0.03 0.15 +/- 0.02 SO-7407, 7408 10/29/2002 Gr. Beta 16.73 +/- 2.21 16.62 +/- 2.27 16.67 +/- 1.58 SO-7407, 7408 10/29/2002 K-40 12.05 +/-0.61 12.27 +/- 0.81 12.16 +/- 0.51 IV54

TABLE IV-5. In-House Duplicate' Samples Concentration (pCUL)a Averaged Lab Code Date Analysis First Result Second Result Result MI-7428, 7429 1012912002 K-40 1542.60 213.00 1355.80 i 185.70 1449.20 i 141.29 pw-7621, 7622 10130/2002 Gr. Beta 2.22 +/- 0.92 2.08 +/- 0.83 2.15 +/- 0.62 TD-7653,7654 10/31/2002 H-3 11122.00 +/- 387.00 11259.00 +/- 390.00 11190.50 +/- 274.71 SW-7569, 7570 11/5/2002 Gr. Beta 15.90 +/- 1.25 16.24 +/- 1.27 16.07 +/- 0.89 SW-7569,7570 11/5/2002 K-40 14.79 +/- 1.48 14.79 +/- 1.48 14.79 +/- 1.05 SO-8010,8011 11/712002 Cs-137 0.11 +/-0.02 0.11 +/-0.03 0.11 +/-0.02 SO8010,8011 11/7/2002 K-40 6.91 +/-0.54 7.21 +/-0.54 7.06 +/- 0.38 VE-7747, 7748 11/11/2002 Gr. Beta 3.59 +/- 0.05 3.25 +/- 0.05 3.42 +/- 0.03 VE-7747,7748 11/11/2002 K-40 3.17 +/- 0.36 3.26 +/- 0.46 3.22 +/- 0.29 MI-7789,7790 11/13/2002 K-40 1319.30 +/- 167.60 1301.20 +/- 140.70 1310.25 +/- 109.41 DW-8082, 8083 11/29/2002 1-131 0.83 +/- 0.24 0.98 +/- 0.22 0.90 +/- 0.16 SW-8054, 8055 12/2/2002 Gr. Beta 2.60 +/- 0.46 2.21 +/- 0.39 2A1 +/- 0.30 SW-8054, 8055 1212/2002 K-40 1.44 +/- 0.14 1.43 +/- 0.14 1.44 +/- 0.10 MI-8105,8106 1214/2002 K-40 1300.60 +/-111.30 1315.40 +/- 108.90 1308.00 +/- 77.86 TD-8298, 8299 12/5/2002 H-3 355.00 +/- 94.00 469.00 +/- 99.00 412.00 +/- 68.26 MI-8396, 8397 12/17/2002 K-40 1409.20 +/- 117.30 1449.60 +/- 108.60 1429.40 +/- 79.93 SWT-8654,8655 12/30/2002 Gr. Beta 1.63 +/- 0.50 1.40 +/- 0.47. 1.51 +/- 0.34 AP-8783, 8784 12/31/2002 Be-7 0.044 +/- 0.009 0.042 +/- 0.008 0.043 +/- 0.006 Note: Duplicate analyses are performed on every twentieth sample received in-house. Results are not listed for those analyses with activities that measure below the LLD.

a Results are reported In units of pCVL, except for air filters (pCi/Filter), food products, vegetation, soil, sediment (pCVg).

IV5-5

TABLE IV.6. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP)a.

Concentrationb Known Control Lab Code Type Date Analysis Laboratory result Activity Limits' STW-939 water 12/01/01 Am-241 1.25 +/- 0.0 1.19 +/- 0.0 0.83 - 1.6 STW-939 water 12/01101 Co-57 138.9 +/- 0.5 143 +/- 14.3 100.1 - 185.9 STW-939 water 12/01/01 Co-60 139.1 0.5 141 +/- 14.1 98.7- 183.3 STW-939 water 12/01101 Cs-134 25.16 +/-0.2 28.5 +/-0.3 19.95 -37.1 STW-939 water 12/01/01 Cs-137 279.96 +/-0.9 286 +/-28.6 200.2 -371.8 STW-939d water 12/01/01 Fe-55 19.68 +/- 23.2 9.2 +/- 0.9 6.44 - 12.0 STW-939 water 12/01/01 Mn-54 253.64 +/- 0.9 246 +/- 0.2 172.2 - 319.8 STW-939 water 12/01/01 Ni-63 65.88 +/- 1.9 88.3 +/- 8.8 61.81 -114.8 STW-939e water 12/01/01 Pu-238 0.060 +/- 0.01 0.0 +/-0.0 STW-939 water 12/01101 Pu-239140 2.79 +/- 0.0 2.99 +/- 0.3 2.09 - 3.9 STW-939 water 12/01101 Sr-90 4.88 +/- 0.3 4.8 +/- 0.5 3.36 - 6.2 STW-939 water 12/01/01 U-23314 0.89 +/- 0.0 0.98 +/- 0.1 0.69 - 1.3 STW-939 water 12/01101 U-238 6.75 +/- 0.0 7.8 +/- 0.8 5.46 - 10.1 STW-939 water 12/01/01 Zn-65 70.6 +/- 1.1 67.3 +/- 6.7 47.11 - 87.5 STSO-955 soil 10116/02 Am-241 40.54 +/- 2.7 43.5 +/-4.4 30.45 -56.6 STSO.955 soil 10116102 Co-57 210.58 +/- 2.0 246 +/- 24.6 172.2 -319.8 STSO-955 soil 10/16/02 Co-60 84.38 +/- 0.9 87.5 +/- 8.8 61.25 -113.8 STSO-955 soil 10/16/02 Cs-134 692.6 +/- 2.1 862 +/- 86.0 603.4 -1120.6 STSO-955 soil 10/16/02 Cs-137 96.98 +/- 1.7 111 11.1 77.7- 144.3 STSO-955 soil 10/16/02 Fe-55 1714.6 +/- 299.6 1870 +/- 187.0 1309 - 2431.0 STSO-955 soil 10116102 Mn-54 509.74 +/- 3.4 546 +/- 54.6 382.2 -709.8 STSO-955 soil 10/16/02 Ni-63 890.6 +/- 22.4 1180 +/- 118.0 826 - 1534.0 STSO-955 soil 10116/02 Pu-238 34.04 +/- 6.0 33.3 +/- 3.3 23.31 -43.3 STSO-955 soil 10116/02 Pu-239/40 68.7 +/- 3.7 72.9 +/- 7.3 51.03 -94.8 STSO-955e soil 10/16/02 Sr-90 1.5 +/- 3.0 0.0 +/- 0.0 STSO-955 soil 10/16/02 U-233/4 166.33 +/- 3.8 229 +/- 22.9 160.3 -297.7 STSO-955 soil 10/16102 U-238 169.76 +/- 3.8 220 +/- 22.0 154 -286.0 STSO-955 soil 10/16/02 Zn-65 783.59 +/- 6.4 809 +/- 80.9 566.3 -1051.7 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 t All results are in Bq/kg or Bq/L as requested by the Department of Energy.

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

a Known activity below the laboratory LLD. The sample was recounted for 2000 minutes; result:11.52 +/- 5.55 Bq L e Included in the testing series as a 'false positive". No activity expected.

IV6-1

TABLE IV-7. Environmental Measurements Laboratory Quality Assessment Program (EML)-

Concentrationa EML Control Lab Code Type Date Analysis Laboratory results Resultb Limitsc STW-945 Water 03/01(02 Am-241 1.68 i 0.14 1.47 0.79 - 1.41 STW-945 Water 03/01/02 Co-60 349.20 +/- 2.60 347.33 0.80 -1.20 STW-945 Water- 03/01/02 Cs-134 3.40 +/-0.60 3.36 0.80 - 1.30 STW-945 Water 03101/02 Cs-1 37 57.20 +/- 1.70 56.07 0.80 - 1.22 STW-945 Water 03/01/02 Pu-238 0.45 +/- 0.11 0.49 0.74 -1.20 STW-945 Water 03/01/02 Pu-239/40 4.47 +/- 0.28 4.22 0.79 -1.20 STW-945 Water 03/01/02 Sr-90 7.40 +/- 1.30 7.58 0.69 - 1.34 STW-945 Water 03101/02 Uranium 3.27 +/- 0.43 2.84 0.75 - 1.33 STW-946 Water 03/01/02 Gr. Alpha 265.40 +/- 7.70 375.00 0.58 - 1.29 STW-946 Water 03101102 Gr. Beta 930.60 + 12.00 1030.00 0.61 -1.43 STW-946 Water 03/01/02 H-3 226.30 i 32.70 283.70 0.78 -2.45 STSO-947 Soil 03101102 Ac-228 55.00 +/- 5.50 51.17 0.80 -1.38 STSO-947 Soil 03/01/02 Am-241 8.30 +/- 3.30 10.93 0.65 - 2.28 STSO-947 Soil 03/01/02 Bi-212 49.20 +/- 12.40 53.43 0.50 - 1.34 STSO-947 Soil 03/01/02 Bi-214 46.60 +/- 3.10 53.93 0.78 -1.42 STSO-947 Soil 03101102 Cs-137 1401.60 +/- 9.10 1326.67 0.80 -1.25 STSO-947 Soil 03/01/02 K-40 613.10 +/- 28.10 621.67 0.80 - 1.32 STSO-947 Soil 03/01/02 Pb-212 51.60 +/- 2.60 51.10 0.78 -1.32 STSO-947 Soil 03/01/02 Pb-214 52.00 +/- 3.60 54.37 0.76 -1.46 STSO-947 Soil 03/01/02 Pu-239/40 14.70 +/- 3.50 19.10 0.71 -1.30 STSO-947 Soil 03/01/02 Sr-90 52.10 +/- 6.30 53.76 0.67 - 2.90 STSO-947 Soil 03/01/02 Th-234 122.40 +/- 6.30 89.30 0.63 - 2.35 STSO-947 Soil 03/01/02 Uranium 143.40 +/- 9.40 194.77 -0.71 -1.32 STVE-948 Vegetation 03/01/02 Am-241 3.10 +/- 2.20 2.23 0.73 - 2.02 STVE-948 Vegetation 03/01/02 Cm-244 0.90 +/- 0.80 1.32 0.61 -1.59 STVE-948 Vegetation 03/01/02 Co-60 13.50 +/-2.10 11.23 0.80 - 1.44 STVE-948 Vegetation 03/01/02 Cs-137 350A. +/- 6.30 313.67 0.80 - 1.31 STVE-948 Vegetation 03101/02 K-40 940.80 +/- 45.60 864.33 0.79 -1.39 STVE-948d Vegetation 03/01/02 Pu-239/40 16.90 +/- 0.70 3.54 0.69 -1.31 STVE-948 Vegetation 03/01/02 Sr-90 543.40 +/- 24.90 586.28 0.55 -1.21 STAP-949 Air Filter 03/01/02 Am-241 0.09 +/- 0.05 0.09 0.70 - 2.34 STAP-949 Air Filter 03/01/02 Co-60 30.10 +/- 0.30 30.52 0.80 -1.26 STAP-949 Air Filter 03101/02 Cs-I 37 29.90 +/- 0.30 28.23 0.80 -1.32 STAP-949 Air Filter 03/01/02 Mn-54 40.40 +/- 0.40 38.53 0.80 - 1.35 STAP-949 Air Filter 03/01/02 Pu-238 0.05 +/- 0.02 0.06 0.67-- 1.33 STAP-949 Air Filter 03/01/02 Pu-239/40 0.15 +/- 0.02 0.19 0.73 -1.26 STAP-949 Air Filter 03/01/02 Sr-90 3.40 +/- 0.40 4.83 0.53 -1.84 STAP-949 Air Filter 03/01/02 Uranium 0.80 +/- 0.20 0.61 0.79 -2.10 STAP-950 Alr Filter 03/01/02 Gr. Alpha 0.43 +/- 0.04 0.53 0.73 - 1.43 STAP-950 Air Filter 03/01/02 Gr. Beta 1.34 +/- 0.05 1.30 0.76 -1.36' STW-959 Water 09/01/02 Am-241 3.00 +/- 0.10 3.04 0.79 -1.41 STW-959 Water 09/01/02 Co-60 258.40 +/- 2.30 268.67 0.80 -1.20 STW-959 Water 09101102 Cs-I 34 50.80 +/- 3.30 60.20 0.80 - 1.30 STW-959 Water 09/01/02 Cs-1 37 80.10 0.30 81.43 0.80 -1.22 STW-959 Water 09/01/02 Cs-137 80.10 +/- 0.30 81.43 0.80 -1.22 S1W-959 Water 09/01/02 Am-241 3.00 +/- 0.10 3.04 0.79 -1.41 1V7-1

TABLE IV-7. Environmental Measurements Laboratory Quality Assessment Program (EML)a.

Concentrationb EML Control Lab Code Type Date Analysis Laboratory results Resulte Limitsd STW-959 Water 09/01102 Am-241 3.00 +/- 0.10 3.04 0.79 - 1.41 STW-959 Water 09/01/02 Co-60 258.40 +/- 2.30 268.67 0.80 - 1.20 STW-959 Water 09/01/02 Cs-1 34 50.80 +/- 3.30 60.20 0.80 - 1.30 STW-959 Water 09/01/02 Cs-1 37 80.10 +/- 0.30 81.43 0.80 - 1.22 STW-959 Water 09/01/02 H-3 271.90 +/- 20.90 227.30 0.78 - 2.45 STW-959 Water 09/01/02 Pu-238 4.40 +/- 0.20 4.33 0.74 - 1.20 STW-959 Water 09/01/02 Pu-239/40 2.10 +/- 0.10 2.07 0.79 - 1.20 STW-959 Water 09/01/02 Sr-90 9.70 +/- 0.20 8.69 0.69 - 1.34 STW-959 Water 09/01102 Uranium 5.60 +/- 0.10 6.84 0.75 -1.33 STW-960 Water 09/01/02 Gr. Alpha 204.90 +/- 3.20 210.00 0.58 - 1.29 STW-960 Water 09/01/02 Gr. Beta 852.00 +/- 26.50 900.00 0.61 -1.A3 STSO-961 Soil 09/01/02 Ac-228 47.60 +/- 1.90 42.30 0.80 -1.38 STSO-961 Soil 09/01/02 Am-241 7.80 +/- 1.40 6.77 0.65 - 2.28 STSO-961 Soil 09/01/02 Bi-212 45.60 +/- 1.70 45.93 0.50 - 1.34 STSO-961e Soil 09101/02 Bi-214 48.80 4.90 33.63 0.78 -1.42 STSO-961 Soil 09/01/02 Cs-137 819.60 +/- 16.60 829.33 0.80 - 1.25 STSO-961 Soil 09101/02 K-40 705.30 +/- 31 AO 637.67 0.80 - 1.32 STSO-961 Soil 09/01/02 Pb-212 48.60 +/- 3.40 43.43 0.78 - 1.32 STSO961 Soil 09/01/02 Pb-214 51.10 +/- 5.10 35.20 0.76 -1.46 STSO-961' Soil 09/01/02 Pu-239/40 20.20 +/- 0.80 12.90 0.71 - 1.30 STSO-961 Soil 09/01/02 Sr-90 38.50 0.10 41.16 0.67 -2.90 STSO9619 Soil 09/01/02 Uranium 58.90 +/- 0.70 87.21 0.71 - 1.32 STVE-962 Vegetation 09/01102 Arn-241 2.10 +/- 0.30 2.25 0.73 -2.02 STVE-962 Vegetation 09/01/02 Cm-244 1.00 +/- 0.30 1.25 0.61 - 1.59 STVE-962 Vegetation 09/01102 Co-60 11.80 +/- 1.50 9.66 0.80 - 1.44 STVE-962 Vegetation 09/01/02 Cs-1 37 340.30 +/- 16.80 300.67 0.80 - 1.31 STVE-962 Vegetation 09/01/02 K-40 1646.00 +/- 74.40 1480.00 0.79 - 1.39 STVE-962 Vegetation 09/01/02 Pu-239/40 3.00 +/- 0.30 3.43 0.69 - 1.31 STVE-962 Vegetation 09/01/02 Sr-90 345.60 +/- 97.80 476.26 0.55 - 1.21 STAP-963h Air Filter 09/01/02 Am-241 0.20 +/- 0.01 0.19 0.70 -2.34 STAP-963 Air Filter 09/01/02 Co-60 24.90 +/- 0.60 23.00 0.80 - 1.26 STAP-963 Air Filter 09/01/02 Cs-i 37 38.00 +/- 1.30 32.50 0.80 - 1.32 STAP-963 Air Filter 09/01/02 Mn-54 60.80 +/- 1.90 52.20 0.80 - 1.35 STAP-9632 Air Filter 09/01/02 Pu-238 0.11 +/- 0.02 0.12 0.67 - 1.33 STAP-963h Air Filter 09/01/02 Pu-239/40 0.21 +/- 0.01 0.21 0.73 - 1.26 STAP-963 Air Filter 09/01/02 Sr-90 5.20 +/- 0.20 5.56 0.53 - 1.84 STAP-963h Air Filter 09/01/02 Uranium 0.41 0.04 0.47 0.79 - 2.10 STAP-964 Air Filter 09/01/02 Gr. Alpha 0.40 +/- 0.10 0.29 0.73 -1.43 STAP-964 Air Filter 09/01/02 Gr. Beta 0.80 +/- 0.10 0.87 0.76 - 1.36

' Results are reported in BqlL with the following exceptions: Air Filters (Bq/Filter), Soil and Vegetation (Bqlkg).

b The EML result listed Is the mean of replicate determinations for each nuclide +/- the standard error of the mean.

c Control limits are reported by EML as the ratio of Reported Value / EML value.

dAn error was found in the conversion from pCVg to Bqlkg. Corrected result : 2.84 +/- 0.59 Bqlkg.

Naturally-occurring radium daughters are present Inthe shield background, and a probable cause of the higher bias seen for Isotopes of lead and bismuth.

'Reporting error.The average result of the biplicate analyses was 14.1+/- 5.7 Bqlkg.

9 The analysis was repeated In duplicate; result of reanalysis, 87.05 +/- 7.64 Bqlkg.

h STAP-963, Calculations for the transuranics analyses (Am-241, Uranium. Pu-238, -239140) were not converted to Bq/total filter.

The data listed Is the result of recalculation.

IV7-2