Text

Annual Radiological Environmental Operating Report
	ML021500487
Person / Time
Site:	LaSalle
Issue date:	05/15/2002
From:	Barnes G; Exelon Generation Co, Exelon Nuclear
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	Download: ML021500487 (136)
	v • d • e

Exelon Generation Company, LLC www.exeloncoTp.com Exelknm.

NUClear LaSalle County Station 2601 North 21" Road Marseilles, IL61341-9757 May 15, 2002 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:

2001 Annual Radiological Environmental Operating Report Enclosed is the 2001 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, 7/ /9?

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

/K~

TABLE OF CONTENTS INTRODUCTION ............................................

"! 21 SUM M ARY ...................................... .......................................................................

1.0 EFFLUENTS EffluentstotoIllinois the Atmosphere .............................................. 3 1.2 Gaseous 1.1 Liquids Released River ...................................................................

SOLID RADIOACTIVE WASTE ............................................................................. 3 2.0 3.0 DOSE TO MAN 3.1 Gaseous Effluent Pathways 3 3.1.1 Noble G ases ........................................................................................ 3 3.1.1.1 GanmmaDoseRates ...................................................................

3.1.1.2 Beta Air and Skin Rates ............................................................ 4 3.1.2 Radioactive Iodine .................................................................................

3.1.2.1 Iodine Concentrations in Air ..................................................... 4 3.1.2.2 Dose to Thyroid ........................................................................

5 3.1.3 Concentrations of Particixates in Air ............................................................. 5 I

3.2 Liquid Effluent Pathways ................................. 5 3.3 Assessment of Dose to Member of Public

................................... 6 4.0 SITE METEOROLOGY .......

6 5.0 ENVIRONMENTAL MONITORING ...................................................................

........................................ 6 5.1 Gamma Radiation 6 Radioactivity .................................................

5.2 Airborne 1-131 and Particulate ............ .........

5.3 Aquatic Radioactivity .......................................................... 7 5.4 M ilk......................................................... I .................................................

8 5,5 Terrestrial Radioactivity .............................................................................

8 5.6 Sample Collections ................................................................................ 8 5.7 Program Modifications .............................................................................

8 6.0 ANALYTICAL PROCEDURES ...............................................................................

CENSUS ................. 8 7.0 MILCH ANIMALS AND NEAREST LIVESTOCK 8

8.0 NEAREST RESIDENT CENSUS .............................................................................

RESULTS ..........................

9.0 INTERLABORATORY COMPARISON PROGRAM 1.0 ERRATADATA ........... 8 I....... 8 10.0 ER A A A ...................................................................

ii

TABLE OF CONTENTS (continued)

PA~e, APPENDIX I - DATA TABLES AND FIGURES ..........................................................

Station Releases

........ 1-2 Table 1.1-1 Gaseous Effluents ..................................................... 1-3 Table 1.2-1 Liquid Effluents .....................................................................

I-5 Table 2.0-1 Solid Waste Shipped Offsite for Burial or Disposal ............

Figure 3.1 Figure 3.1-4 Isodose and Concentration Contours ..................................... -6 Table 3.1-1 Maximum Doses Resulting from Airborne Releases ................................................................... .. 1-10 Table 3.2-1 Maximum Doses Resulting from Liquid D ischarges ......................................................................... 1-14 Table 3.3-1 10CFR20 Compliance Assessment ........................................ 1-15 Table 3.4-1 Maximum Doses Resulting from Airborne Releases Based on Concurrent Meteorlogical Data.............................. 1-19 Environmental Monitoring Inner Ring TLD Locations ...................... 1-21 Figure 5.0-1 1-22 Figure 5.0-2 Outer Ring TLD Locations ....................................................

Figure 5.0-3 Fixed Air Sampling and TLD Sites ........................................ 1-23 Figure 5.0-4 Ingestion and Waterbome Exposure Pathway Sample Locations ................................................................ -2 Table 5.0-1 Radiological Environmental Monitoring Locations ............................................................................. 1-25 Table 5.0-2 Radiological Environmental Monitoring Program, Sampling Locations and Sample Collection and Analyses ................................ ".............................................. 1-26 Table 5.0-3 - Table 5.0-6 Radiological Environmental Monitoring Program Quarterly Sunnary .............................................................. .1-32 II-1 APPENDIX II- METEOROLOGICAL DATA .................................................................

n3-I APPENDIX M11 - 2001 REMP SAMPLE RESULTS ..........................................................

....... IV-i APPENDIX IV - INTERLABORATORY COMPARISON PROGRAM RESULTS V-I APPENDIX V - ERRATA DATA (If applicable) ...................................................

iii

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

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

samples of iodine and particulate radioactivity sampled during to the Nuclear composite on a monthly basis and reported of effluent analyses are summarized of The results Specifications. Airborne concentrations as required per Technical Regulatory Commission in offsite areas are calculated using effluent and noble gases, 1-131, and particulate radioactivity meteorological data.

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

I

SUMMARY

to only a small fraction of the LaSalle Gaseous and liquid effluents for the period contributed concentrations Station Technical Specification limits. Calculations of environmental County data for the period indicate that based on .ffluent, Illinois River flow, and meteorological attributable to LaSalle County Station does not consumption by the public of radionuclides radionuclides released to the atmosphere exceed regulatory limits. Radiation exposure from to with a maximum individual total dose estimated represented the critical pathway for the period The and occupancy factor of 0.7 is assumed.

be 2.20E-02 mrem for the year, where a shieldingaccordance with the Offsite Dose Calculation assessment of radiation doses is performed in that the station is operating in compliance Manual (ODCM). The results of analysis confirm with 10CFR50 Appendix I, 10CFR20 and 40CFRI90.

j,0 EFFLUENTS 1.1 GaseOus Effineunts to the Atmosphere radioactivity concentrations of noble gases, radioiodine, and particulate Measured of to the atmosphere during the year, are listed in Table 1.1-1. A total released gases were released with a maximum 2.49E+03 curies of fission and activation 1.38E+02. 11Ci/sec.

quarterly average release rate of maximum total of 3.62E-02 curies of 1-131 were released duiring the year with a A

of 1.57B-03 LCi/sec.

quarterly average release rate emitters was released as airborne particulate A total of 4.24W-03 curies of beta-gamMa release rate of 2.83E-04 V.Ci/sec, A total of matter with a maximum quarterly average was also released.

8.22E-06 curies of alpha-eretting radionuclides with a maximum quarterly average A total of 2.42E+02 curies of tritium was released release rate of 1.17E+01 gCi/sec.

1.2 Liquids Released to linois River 2001. Continuous release path activity was There were zero batch liquid releases in below applicable Lower Limits of Detection.

2.0 SOLID RADIOACTIVE WASTE or to waste radioactive wastes were shipped by truck to the Barnwell disposal facility Solid Report. The the LaSalle 2001 Radioactive Effluent processors. For fuither detail, refer to 30, 2002.

submittal date of this report was April 3.0 DOSE TOQMAN 3.1 Gaseous Effluent Pathways via summarizes the doses resulting from"releases of airborne radioactivity Table 3.1-1 the different exposure pathways.

3.1.1 Nobl Gases 3.1.1.1 Gamna Dose Rates at LaSalle County Station are Unit I and Unit 2 gaseous releases single station vent stack (SVS) reported as Unit I releases due to a whole body dose rates are shown release point. Offsite Gamma air and on measured release rates, in Table 3.1-1 and were calculated based and average meteorological data isotopic composition of the noble gases, meteorological data are for the period. Doses based on concurrent shown in Table 3.4-1. Isodose contours based on concurrent the year are shown in Figure meteorological data for gamma dose for and meteorological data, the 3.1-1. Based on measured effluents be 2,20E-02 wrem (Table maximum total body dose to an adult would 3

or shielding factor of 0.7 included.

3.1A-I) for the year, with an occupancy The maximum total body dose based on measured effluents and

-.23E-02 mtorem- (Table 3.4-1).

concurrent meteorological data would be 2.91E-02 nirad (Table 3.1-1) and The maximum gamma air dose was meteorological data (Table 3.4-1).

3.86E-02 nerad based on concurrent 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 of gaseous effluents may be meters or less); consequently, plumes of calculating the dose from beta considered "infinite" for the purpose the actual dose to sensitive skin radiation incident on the skin. However, to the effect of the beta particle tissues is difficult to calculate due covering sensitive tissues.

energies, thickness of inert skin and clothing to have a thickness of 7.0 taken For purposes of this report the skin is 2 and an occupancy factor of 1.0 is used.

The skin dose from beta mg/cm mrem (Table 3.1-1) and and gamma radiation for the year was 2.33E-02 on concurrent meteorological data.

1.64E-02 mmcm (Table 3.4-1) based was I .40E-03 mrad The maximum offsite beta air dose for the year 3.4-1) based on concurrent (Table 3.1-1) and 5.23E-03 mrad (Table of radioactive noble gases at meteorological data. The air concentrations Figure 3.1-2.

the offsite receptor locations are given in 3.1.2 Radioactive Iodine capacity to concentrate ingested or The human thyroid exhibits a significant during routine operation of the inhaled iodine. The radioiodine, 1-131, released in a dose to the thyroid. The plant, may be made available to man resulting is ingestion of radioiodinc in principal pathway of interest for this radionuclide milk.

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

estimated to be 6.47E-04 pCi/m3 for the 3.1.2.2 Dose to Thyroid exposed individual living The hypothetical thyroid dose to a maximum calculated. The radionuclide near the station via ingestion of milk was milk was taken to be the nearest considered was 1-131 and the source of through October. The dairy farm with the cows pastured from May mrem (child) for the maximum thyroid dose due to 1-131 was 1.15E-01 year (Table 3.1-I).

4

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 8.67E-01 pCi/62.

(Table 3.4-1) 3.2 Liquid Effluent Pathwas The three principal pathways through the aquatic environment for potential doses to man from liquid waste are ingestion of potable water, eating aquatic foods, and exposure while on the shoreline. Not all of these pathways are 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 0.00E+00 and organ dose was 0.OOE+00 for the year (Table 3.2-1).

3.3 Assessment of Dose to Member of Public During the period January to December, 2001, LaSalle County Station did not exceed these limits as shown in Table 3.1-I 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 reaotor unit (1.5 mrem to the whole body or 5 marem to any organ during any calendar quarter, 3 mram to the whole body or 10 mrem to any organ during anyi calendar year).

1I-he 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 iodino-131, iodine-133, tritium, and radionucides in particulate form with half-lives greater than eight days in gaseous effluents released from each reactQr unit (7.5 mrem to auy organ during any calendar quarte, 15 mrem to any organ during any calendar year).

The IOCFR20 limit on Total Bffective Dose Equivalent to individual members ofthe public (100 mrcm).

Nuclear Regulatory Comnmission, Regulatory Guide 1.109 (Rev. 1).

5

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

stability class deternined for the was 100% during 2001 (Table 3.4-1)

Data recovery for these measurements 5.0 ENVIRONMENTA )

MONITORING Environmental Monitoring Program Table 5.0-1 provides an outline of the Radiological Standards. Tables 5.0-2 lists the program's (REW) as required in the current Technical Tables collection frequencies and analyses for all samples collected.

sampling locations, data is given in to 5.0-6 summarize data for the year. A detailed listing of all 5.0-3 Appendix III.

media are discussed below.

Specific findings for various envi'ronmental 5.1 G0amma Radiation and noble gases released to the atmosphere External radiation dose from onsite sources dosimeters (TLDs). Each location was measured using CaF2 thermoluminescent average external radiation dose for the quarterly normally consists of 2 TLD sets. The and 18.8 mER at the control locations. TLD year was 20.7 mn. at the indicator locations and locations are shown in Figures 5.0-1 Mi results are listed in Table 4.0 of Appendix and 5.0-2.

air sampling locations averaged 20.1 mR Quarterly external radiation dose at indicator (17.1 rnR), 1987 (17.8 mR), 1988 (16.5 mR),

and is similar to levels measured in 1986 mR), 1992 (15.5 mR), 1993 (14.5 mR),

niR), 1990 (17.8 ruR), 1991 (17.7 1989 (17.6 (15.9 mR) and 1997 (16.1 mR), 1998 (17.0 1994 (15.4 mR), 1995 (15.3 niR), 1996 mR.). These differences are not statistically mR), 1999 (17.0 mE.) and 2000 (17.9 were used in 2001 and a different vendor significant. In addition, new style TLDs processed them.

5.2 Airborne 1-131 and Particulate Radioactivit 5.0-3. Airborne' 1-131 remained below Locations of the samplers are shown in Figure the LLD of 0.07 pCi/r3 throughout the year.

0.027 beta concentrations ranged from 0.006 to 0.053 pCi/rn and averaged Gross 3 and were similar to levels measured in 1985 (0.025 pCi/m3 ), 1986 (0.027 pCi/n by except for the period from May 16 through June 6 when it was influenced pCi/rn3 (0.031 pCi/m 3),

pCi/m accident (0.028reactor 1989nuclear the ), 1990 (0.024 1991 (0.027 pCi/ra), 1987 at Chermoby, pCi/m), 1988 (0.022 pCi/m), 1992 (0.022 pCi/.)m, (0.022 pCi/mr), 1994 (0.022 pCi/rm), 1995 (0.021 pCi/mr), 1996 (0.021 pCi/rn),

1993 6

3 (0.027 pCi/m 3) and 2000 (0.028 1997 ý0.022 pCiVn ), 1998 (0.024 pCi/m ), 1999 3

pCi/zn).

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

was detected in any sample.

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

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

gammaa-emitting nuclides above their with a beta activity averaged 5.3 pCi/L in the Illinois River at Seneca samples, Gross Downstream sample averaged 5.3 pCi/L, range of 4.1-6.4 pCiVL. The Illinois River, with a range of 4.1-6.7 pCi/L.

samples, Illinois River at Seneca, averaged Tritium activity in the quarterly upstream concentration of 654 pCi/L. In the Illinois 411 .pCi/L with a maximum third quarter averaged 327 pCi/L with a maximum third activity River Downstream samples, tritium level of concentration of 663 pCi/L. These values are well below the-reporting quarter 30,000 pCi/L.

(Illinois samples were collectd twice a year from two indicator locations 4

Sediment for gamma-emitters. Cs-13 and Cs-137 River, Downstream) and analyzed pCi/g dry weight and 0.18 pCilg limits of.0.15 concentrations were below the detection dry weight, respectively, in all samples.

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

5.4 Milk November through April and biweekly Milk samples were collected monthly from for Iodine-131 and ganm&a-emitting nuclides.

from May through October and analyzed pCi/L of 0.5 pCiL (May - October) and 5.0 1-131 remained below the detection limits Ba/La-140 were below the LLD levels of 15, (November - April). Cs-134, Cs-137 and I8 and 15 pCi/L, respectively.

7

5.5 Terrestrial Radioactivity' Vegetables were collected in the third quartet 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% releases.

5.6 Sampale Collections All samples were collected as scheduled except those listed in the Listing of NMissed Samples, Section 2 of Appendix MI.

5.7 Program Modifications There were no changes to the program in 2001.

6.0 AŽNlALYTICAL PROCEDUJRS 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 was conducted within a 6.2-mile radius of the Station. The survey was conducted by "door-to-door" canvas by A. Lewis on August 20, 2001. The nearest livestock census was conducted by A. Lewis on August 20, 2001. The results of each census are presented on pages 32 and 33 of Appendix M.L 8.0 NEAREST RESMENT CENS US A census of the nearest residences within a 6.2-mile radius was conducted by A- Lewis on August 20,2001.

Results of the nearest residence census are presented on page 34 of Appendix MI.

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

10.0 ERRATA DATA Errata data is presented in Appendix V.

8

APPENDIX I DATA TABLES AND FIGURES I-1

Table 1.1-1 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AD WASTE DISPOSAL ANNUAL REPORT (2001)

UNITS ONE AND TWO DOCKET NUMBERS 50-373 AND 50-374 GASEOUS EFFLUENTS-SUMMATION OF ALL RELEASES ZIstiedI 4th Qtr ITotal Err~or %

I Units lSt Lr I 2nd 2'nAQ tt I '*4ratlr I 1

A. Fission and Activation Gas Releases 1.'Total Reeale AWIdty Ci 4.01E+02 1.09E+03 6.74E-+02 3.24E+02 35%

j2. Average Release Rate 1uC71se 5.1 5E+01 1.38E+02 8.47E+01 4.08tE+01 13.Percen of Technical Specification %. I jLimit B. Iodine Releases

1. Total 1-131 Activity Ci 6.81E-03 6.§9E-03 1.25E-02 1.09E-02 35%

2. Average Release Rate

3. Percent of Technical Specification Limit uCi/sec 7.47F-04 8.84E-04 1.57E-03 1.379-03 I

C. Particulate (> 8 day half-life) Releases

1. Gross Activiy Ci 5.43E-04 5.97E-04 2,25E-03 7.48E-04 39__

2. Average Release Rate uC~isec 6.98E-05 8.87E-05 ,3-4 91-5

3. Percent of Technical gizcification .. % *

L*[t T, ross Alpha Activity Ci 5.08E-06 1.57E-06 1.19E-6 <7100E-] I "

D. Tritium Releases

l. Total Rease Activity Ci 6.02E+01 9.17E+01 4.85E+01 5.14E+01 21%

,, ,*.. - ,_.I', .. . ... . 1 U* U , Jt'" 1U A,' OAm

I

2. Averag Release Rate uCilsec 6.46E+00 1.17E+IJ1 1.7E0 V.1U:U l.41 r"PUU Tp

3. Percent of Technical Specification =F Limit

"*I This information is contained In the Radiological Impact on Man section of the report.

"<"indicates acivity of sample is less than LLD given In uCi/ml 1-2

Table 1.2-1 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2001)

LIQUID RELEASES UNIT 1 SUMMATION OF ALL LIQUID RELEASES Estimta]ed 4tb? ýTotal&=lO%

I Units I lstQtr I 2ndQ~r I z~~

I units I lstQtr I 2ndQt I 3rdQtr I A. Fission and Activation Products

. Tot Acivity d .... Ci <LLD `<LUD <LL

<LLD 10%

2. Average ConcV-mon Rvreaiedi uCi/m <LWLD ;L= <LLD <LLD

3. Percent of Applicable Limit*

B, Tritium

1. Total Actvity Released Ci <LLD <LLD <LID L 12%9 T2.Average Conceniration Rcleased uCi/ml <LD <LLD <LLD <LLD

3. Percent of Applicable Limit % *

C Dissolved Noble Gases T.Tobtal Activity Released Ci <LLD < D <LD fLLO N/A i2. Avmage Conwen'tion ReleasFed " uCi/all <LID AM -<LD- -qLID

3. Pa* of 4Appllca-ble Limit ... %*

D. Gross Alpha T. TotalActivity Rleasd (estimate) Ci <1.00E-07 <I.0OE-07 <I0 0E-07 N/A

2. Average Concentration Relased uCYmI <1.00E-07 <1.00E-07 <1.00E.07 <1.00E-07

3. Pcet of Applcable.inu E..Volume of Liquid Waste tolDischargel liters 0.ooE+O0 O.OOE+00 0.OoE00 .ooE+0 2%

F.Vlm fDilution Water ers I.OE0 0.00E+I00 O.OOE+00 0.O0+0 O00E+00 5%

"Thisinformation is ¢ontained in the Radiological Impact on Man section of the report "I Indicates activity of sample Is less than LLD given In uCi/ml 1-3

Table 1.2-1 (continued)

LASALLE COUNTY NUCLEAR POWER STATJON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (200)1)

LIQUID RELEASES UNIT 2 SUMMATION OF ALL LIQUID RELEASES A. Fission and Activation Products

<LLD ) "D M.- LL *

T.Total Activ fiy *+++-*-m <LLD kýLD Ui/ <D <LLD

2. Ave-rage Couecenafon Released RpIMcl .*it All*"

I. Peroat of S. Tritium

1. Total Activity R,ea.ed - ~ ~Ci .

<LLD

.......~M

<LLD I~I

<LLD

.T f ~<LU .12%

L

2. Averaie Conceneation Relei *r.. * <LLD

3. Pmcent of Applicable Limit C. Dissolved Noble Gases D. Gross Alpha f

i,.Vo mo.qwdWastetoDi charge -1.0 lte 00 E+0 ' 0.OOE+00 0.O+00 2%

It ;-es o.ooE+0o O.OO, 0 .oo 0 1 oooE+0o I 5 F.Volume ioue-owater

,, s infbnna*ti* is contbaned In the Radiological Impact on Man section of the repoM.

"<" indicates activity of sample is less than LLD given in uCi/ml 1-4

TABLE 2.0-1 Table 2.0-1 has been deliberately deleted. For Solid Waste Disposal detail, refer to the LaSalle County Station 2001 Effluent Report.

1-5

Figure 3.1-1 Estimated Cumulative Gamma Dose (in mrem) from the LaSalle Station for the period January-December 2001 Isopleth Labels Small figure - multiply by 10"4 Large figure - multiply by 10.4 otieOd 0 5 orsI0 1es0 01tStr10tom S... . . neca I t .I I B I I I I 1-6

Figure 3.1-2 Estimated Total Concentrations (in pCi/m3) of Noble Gases from the LaSalle Station for the period January-December 2001 Isopleth Labels Small figure - multiply by 102 Large figure - multiply by 10' MI 0 5 10 15 20mi 1-7

Figure 3.1-3 Estimated Total Concentrations (in pCi/m3) of lodines from the LaSalle Station for the period January-December 2001 isopleth Labels Small figure - multiply by 1t0 Large figure - multiply by 106 0 5 10 15 20a 1-8

Figure 3.1-4 Estimated Total Concentrations (in pCVm3) of Particulates from the LaSalle Station for the period January-December 2001 Isopleth Labels Small figure - multiply by 10"O Large figure - multiply by 10"3 0 5 olt5

° , , Mar I0 20mi 1-9

Table 3.1-1 LASALLE STATION UNIT ONE ACTUAL 2001 MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES CALCULATED 04/11/02 PERIOD OF RELEASE - 01/01/01 TO 12/31/01 INFANT RECEPTOR 2ND 3RD 4TH 1ST QUARTER QUARTER QUARTER ANNUAL QUARTER OCT-DEC TYPE APR-JUN JUL-SEP JAN-MAR 8.05E-03 4.74E-03 6.99E-03 2.91E-02 9.29E-03 (WSW) (WSW)

GAMMA AIR (WSW) (WSW) (WSW )

(MRAD) 2.67E-04 2.32E-04 1.40E-03 2.88E-04 6.18E-04 (ESE )

BETA AIR (ESE) (ESE ) (ESE)

(MRAD) (ESE ) 5.28E-03 2.20E-02 7.02E-03 6.08E-03 3.58E-03 TOT. BODY (WSW) (WSW) (WSW )

(WSW) (WSW)

(MREM) 3.79E-03 5.57E-03 2.33E-02 7.39E-03 6.59E-03 (WSW )

SKIN (WSW) (WSW ) (WSW)

(MREM) (WSW) 1.55E-02 7.56E-02 4.65E-03 2.07E-02 3.48E-02 ORGAN (ESE ) (ESE) (ESE)

(ESE) (ESE)

(MREM)

THYROID THYROID THYROID THYROID THYROID THIS IS A REPORT FOR THE CALENDAR YEAR 2001 COMPLIANCE STATUS - 10CFR 50 APP. I INFANT RECEPTOR

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

QTRLY 1ST QTR 2ND QTR 3RD QTR 4TH QTR YRLY % OF I APP.

APR-JUN JUL-SEP OCT-DEC OBJ OBJ JAN-MAR 0.14 10.0 0.29 5.0 0.19 0.16 0.09 GAMMA AIR (MRAD) 0.00 0.00 20.0 0.01 10.0 0.00 0.01 0.44 BETA AIR (MRAD) 0.14 0.21 5.0 2.5 0.28 0.24 0.16 TOT. BODY (MREM) 0.09 0...05 0.07 15.0 7.5 0.10 15.0 0.50 SKIN (MREM) 0.28 0.46 0.21 7.5 0.06 ORGAN (MREM)

THYROID THYROID THYROID THYROID THYROID RESULTS BASED UPON: ODCM ANNEX REVISION 1.7 SEPTEMBER19951995 ODCM SOFTWARE VERSION 1.1 January 1995 ODCM DATABASE VERSION 1.1 January 1-10

Table 3.1-1 (continued)

LASALLE STATION UNIT ONE ACTUAL 2001 MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES PERIOD OF RELEASE - 01/01/01 TO 12/31/01 CALCULATED 04/11/02 CHILD RECEPTOR IST 2ND 3RD 4TH QUARTER QUARTER QUARTER QUARTER ANNUAL TYPE JUL-SEP OCT -DEC JAN-MAR APR-JUN 9.29E-03 8.05E-03 4.74E-03 6.99E-03 2.91E-02

,G'AMMA AIR (wsw) (WSW) (WSW)

(MRAD) (WSW) (WSW )

2.88E-04 6.18E-04 2.67E-04 2.32E-04 1.40E-03 BETA AIR (ESE) (ESE) (ESE)

(MRAD) (ESE) (ESE) 7.02E-03 6.08E-03 3.58E-03 5.28E-03 2.20E-02 TOT. BODY (wSw) (WSW) (WSW)

(MREM) (WSW ) (WSW) 7.39E-03 6.59E-03 3.79E-03 5.57E-03 2.33E-02 SKIN (MREM) (WSW) (WSW) (WSW) (wSW) (WSW) 3.83E-03 3.46E-02 5.40E-02 2.28E-02 1.15E-01 ORGAN (NNE) (NNE)

(MREM) (NNE) (NNE) (NNE)

THYROID THYROID THYROID THYROID THYROID THIS IS A REPORT FOR THE CALENDAR YEAR 2001 COMPLIANCE STATUS - 10CFR 50 APP. I CHILD RECEPTOR I. - ...........

% OF APP ----------

QTRLY 1ST QTR 2ND QTR 3RD QTR 4TH QTR YRLY % OF OBJ JAN-MAR APR-JUN JUL-SEP OCT-DEC OBJ APP. I 5.0 0.19 0.16 0.09 0.14 10.0 0.29 GAMMA AIR (MRAD) 20.0 0.01 10.0 0.00 0.01 0.00 0.00 BETA AIR (MRAD) 5.0 0.44 2.5 0.28 0.24 0.14 0.21 TOT. BODY (MREM) 15.0 0.16 7.5 0.10 0.09 G.05 0.07 SKIN (MREM) 0.30 15.0 0.77 ORGAN (MREM) 7.5 0.05 0.46 0.72 THYROID THYROID THYROID THYROID THYROID RESULTS BASED UPON: ODCM ANNEX REVISION 1.7 SEPTEMBER 1995 ODCM SOFTWARE VERSION 1.1 January 1995 ODCM DATABASE VERSION 1.1 January 1995 1-11

Table 3.1-1 (continued)

LASALLE STATION UNIT ONE ACTUAL 2001 MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES PERIOD OF RELEASE - 01/01/01 TO 12/31/01 CALCULATED 04/11/02 TEENAGER RECEPTOR 1ST 2ND 3RD 4TH TYPE QUARTER QUARTER QUARTER QUARTER ANNUAL JAN-MAR APR-JUTN JUL-SEP OCT-DEC GAMMA AIR 9.29E-03 8.05E-03 4.74E-03 6.99E-03 2.91E-02 (MRAD) (WSW ) (wSW) (WSW ) (WSW) (WSW)

BETA AIR 2.88E-04 6.18E-04 2.67E-04 2.32E-04 1.40E-03 (MRAD) (ESE ) (ESE ) (ESE ) (ESE) (ESE )

TOT. BODY 7.02E-03 6.08E-03 3.58E-03 5.28E-03 2.20E-02 (MREM) (WSW) (WSW) (WSW ) (WSw) (WSW)

SKIN 7.39E-03 6.59E-03 3.79E-03 5.57E-03 2.33E-02 (MREM) (WSw ) (WSW) (wSw ) (WSW) (WSW)

ORGAN 2.76E-03 2.23E-02 3.41E-02 1.46E-02 7.38E-02 (MREM) (NNE) (NNE) (NNE ) (NNE) (NNE)

THYROID THYROID THYROID THYROID THYROID THIS IS A REPORT FOR THE CALENDAR YEAR 2001 COMPLIANCE STATUS - 10CFR 50 APP. I TEENAGER RECEPTOR

*%OFAPP I.-------------

QTRLY 1ST QTR 2ND QTR 3RD QTR 4TH QTR YRLY % OF OBJ JAN-MAR APR-JUN JUL-SEP OCT-DEC OBJ APP. I GAMMA AIR (MRAD) 5.0 0.19 0.16 0.09 0.14 10.0 0.29 BETA AIR (MRAD) 10.0 0.00 0.01 0.00 0.00 20.0 0.01 TOT. BODY (MREM) 2.5 0.28 0.24 0.14 0.21 5.0 0.44 SKIN (MREM) 7.5 0.10 0.09 0'.05 0.07 15.0 0.16 ORGAN (MREM) 7.5 0.04 0.30 0.45 0.19 15.0 0.49 THYROID THYROID THYROID THYROID THYROID RESULTS BASED UPON: ODCM ANNEX REVISION 1.7 SEPTEMBER 1995 ODCM SOFTWARE VERSION 1.1 January 1995 ODCM DATABASE VERSION 1.1 January 1995 1-12

Table 3.1-1 (continued)

LASALLE STATION UNIT ONE ACTUAL 2001 MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES PERIOD OF RELEASE - 01/01/01 TO 12/31/01 CALCULATED 04/11/02 ADULT RECEPTOR 1ST 2ND 3RD 4TH QUARTER QUARTER QUARTER QUARTER ANNUAL TYPE JUL-SEP OCT-DEC JAN-MAR APR-JUN 9.29E-03 8.05E-03 4.74E-03 6.99E-03 2.91E-02 GAMMA AIR (WSW) (WSW) cWsw )

(MRAD) (WSW) (wSW) 2.88E-04 6.18E-04 2.67E-04 2.32E-04 1.40E-03 BETA AIR (ESE ) (ESE )

(ESE) (ESE ) (ESE)

(.MAD) 3.58E-03 5.28E-03 2.20E-02 TOT. BODY 7.02E-03 6.08E-03 (WSW) (WSW) (WSW ) (WSW ) (WSW )

(MREM) 5.57E-03 2.33E-02 7.39E-03 6.59E-03 3.79E-03 SKIN (WSW)

(MREM) (WSW) (WSW) (WSW ) (wSw )

3.12E-03 2.21E-02 3.36E-02 1.46E-02 7.33E-02 ORGAN (NNE) (NNE)

(MREM) (NNE) (NNE) (NNE)

THYROID THYROID THYROID THYROID THYROID THIS IS A REPORT FOR.THE CALENDAR YEAR 2001 COMPLIANCE STATUS - 10CFR 50 APP. I ADULT RECEPTOR

% OFAPP I. - ------------

QTRLY 1ST QTR 2ND QTR 3RD QTR 4TH QTR YRLY % OF JAN-MAR APR-JUN JUL-SEP OCT-DEC OBJ APP. I OBJ 5.0 0.19 0.16 0.09 0.14 10.0 0.29 GAMMA AIR (MRAD) 20.0 0.01 10.0 0.00 0.01 0.00 0.00 BETA AIR (MRAD) 0.21 5.0 0.44 TOT. BODY (MREM) 2.5 0.28 0.24 0.14 0.10 0.09 0.05 0.07 15.0 0.16 SKIN (MREM) 7.5 0.49 7.5 0.04 0.29 0.45 0.19 15.0 ORGAN (MREM)

THYROID THYROID THYROID THYROID THYROID RESULTS BASED UPON: ODCM ANNEX REVISION 1.7 SEPTEMBER 1995 ODCM SOFTWARE VERSION 1.1 January 1995 ODCM DATABASE VERSION 1.1 January 1995 1-13

TABLE 3.2-1 Table 3.2-1 has been deliberately deleted. There were no liquid releases in 2001.

1-14

Table 3.3-1 LASAL.LE STATION UNIT ONE 10 CFR 20 COMPLIANCE ASSESSMENT PERIOD OF ASSESSMENT 01/01/01 TO 12/31/01 CALCULATE*D 02/27/02

1. 10 CPR 20.1301 (a) (1) Compliance Total Effective Dose Eqivalent, =iem/yr 3.97E-01 (a) (1) limit mrem/yr 100.0 10 CFR 20.1301

% of limit 0.40 Compliance Sutmary 10CFR20 ist 2nd 3rd 4th % of Qtr Qtr Qtr Qtr Limit TEDE 9.41E-02 1.04E-01 1. 02E-01 9.77E-02 0.40 RESULTS BASED UPON: ODCM ANNEX REVISION 1.7 SEPTEMBER 1995 ODCM SOFTWARE VERSION 1.1 January 1995 ODCM DATABASE VERSION 1.1 January 1995 1-15

Table 3.3-1 (continued)

LASALLE STATION UNIT ONE 10 CFR 20 COMPLIANCE ASSESSMENT PERIOD OF ASSESSMENT 01/01/01 TO 12/31/01 CALCULATED 02/27/02

2. 10 CPR 20.1301 (d) /40 CPR 190 Compliance Dose Limit % of (Mrem) (torem) Limit whole Body Plume 2.20E-02 (DDE) Skyshine 3.48E-01 Ground 9.39E-04 Total 3.71E-01 25.0 1.49 Organ Dose Thyroid 5.60E-02 75.0 0.07 (CDE) Gonads 2.49E-02 25.0 0.10 Breast 2.49E-02 25.0 0.10 Lung 2.49E-02 25.0 0.10 Marrow 2.49E-02 25.0 0.10 Bone 2.49E-02 25.0 0.10 Remainder 2.50E-02 25.0 0.10 CEDE 2.59E-02 TEDE 3.97E-01 100.0 0.40 RESULTS BASED UPON: ODCM ANNEX REVISION 1.7 SEPTEMBER 19$5 ODCM SOFTWARE VERSION 1.1 January 1995 ODCM DATABASE VERSION 1.1 January 1995 1-16

Table 3.3-1 (continued)

LASA*LE STATION UNIT TWO 10 CFPR 20 COMPLIANCE ASSESSMENT PERIOD OF ASSESSMENT 01/01/01 TO 12/31/01 CALCULATED 02/27/02

1. 10 CFR 20.1301 (a)(i.) Compliance Total Effective Dose Eqivalent, mrem/yr 3.41E-01 10 CFR 20.1301 (a)(1) limit mrem/yr 100.0

% of limit 0.34 Compliance Summary 10CFR20 lst 2nd 3rd 4th !k of Qtr Qtr Qtr Qtr Limit TEDE 8.73n-02 8.29E-02 8.1SE-02 8.94E- 02 0.34 RESULTS BASED UPON: ODCM ANNEX REVISION 1.7 SEPTEMBER 1995 ODCM SOFTWARE VERSION 1.1 January 1995 ODCM DATABASE VERSION 1.1 January 1995 1-17

Table 3.3-1 (continued)

LASALLE STATION UNIT TWO 10 CFR 20 COMPLIANCE ASSESSMENT PERIOD OF ASSESSMENT 01/01/01 TO 12/31/01 CALCULATED 02/27/02

2. 10 CFR 20.1301 (d)/40 CFR 190 Compliance Dose Limit % of (mrem) (torem) Limit Whole Body Plume 0. OOE+00 (DDE) Skyshine 3.41E-01 Ground 0.00E+00 Total 3-.41E-01 25.0 1.36 Organ Dose Thyroid 0.OOE+00 75.0 0.00 (CDE) Gonads 0.00E+00 25.0 0.00 Breast 0.00E+00 25.0 0.00 Lung 0 .00E+00 25.0 0.00 Marrow O.OOE+00 0.0 08+00 25.0 0.00 Bone 0.001+00 25.0 0.00 Remainder 0.00E+00 25.0 0.00 CEDE 0.OOE+00 TEDE 3.41E-01 100.0 0.34 RESULTS BASED UPON: ODCM ANNEX REVISION 1.7 SEPTEMBER 1995 ODCM SOFTWARE VERSION 1.1 January 1995 ODCM DATABASE VERSION 1.1) Jantiary 1995 1-18

Table 3.4-1 LASALLE STATION - UNIT I MAXIMUM DOSES RESULTING FROM AIR8ORNE RELEASES CURRENT PERIOD OF RELEASE: October I - December 31 YEAR: 2001 TYPE OF DOSE CURRENT PERIOD CURRENT QUARTER THIRD QUARTER SECOND QUARTER FIRST QUARTER ANNUAL GAHMtfAAIR (mrad) 3.410E-03(WSW) 3.41OE-03(WSW) 4.655E-03(WSW) 6.750E-03(WSW) 7.750E-03( SE) 1.932E-O2(WSw)

BETA AIR (mrad) 4.610E-04( E ) 4.610E.04( E ) 6.300E-04(NNE) 1.265E.03(WSW) 9.400E-04( SE) 2.617E-03(ESE)

WHOLE BODY (mrem) 1.335E-03(ESE) 1.335E-03(ESE) 1.775E-03(SSW) 2.040E-03(SSW) 2.290E-03( SE) 6.145E-03(SSW)

SKIN (mrem) 1.815E-03(ESE) 1.SISE-03(ESE) 2.130E-03(SSW) 2.535E-03(NNE) 3.375E-03( SE) B.185E-03(ESE)

ORGAN (mrem) I 595E-04( E I 1.595E-04( E 2.225E-04(NNE) 1.41OC-04(WSW) 1.535E-04( SE) 5.095E-04( E I CRITICAL PERS-ORG CH-TH CH-TH CH.TH CH-TH CH-TH CH-TH COMPLIANCE STATUS 10 CFR 50 APP. 1 10 CFR 50 APP.!

TYPE OF DOSE QUP RTERLY OBJECTIVE %OF APP I YEARLY OBJECTIVE OF APP. I GAMMA AIR (mrad) 5.0 .07 10.0 .19 BETA AIR (mrad) 10.0 .00 20.0 .01 WHOLE BODY (mrem) 2.5 .05 5.0 .12 SKIN (mrem) 7.5 .02 15.0 .05 ORGAN (mrem) 7.5 .00 15.0 .00 CRITICAL PERSON-ORGAN (CH-TH) (CH-TH)

CRITICAL ORGANS: BN-BONE. LV-LIVER. TB=TOTAL BODY. TH-THYROID. KD-KIONEY. LN-LUNG. G1-GI-LLI CRITICAL PERSON: AD-ADULT. TAdTEENAGER. CH-CHILD. IN-INFANT Date of calculation: 4/18/2002 1-19

Table 3.4-1 (continued)

LASALLE STATION - UNIT 2 MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES CURRENT PERIOD OF RELEASE: October I - December 31 YEAR: 2001 TYPE OF DOSE CURRENT PERIOD CURRENT QUARTER THIRD QUARTER SECOND QUARTER FIRST QUARTER ANNUAL GAMMA AIR (mrad) 3.410E-03(WSW) 3.410E-03(WSW) 4.655E-03(WSW) 6.750E-03(WSW) 7.750E-03( SE) 1.932E-O2(wSw)

BETA AIR (mrad) 4.610E-04( E ) 4.610E-04( E ) 6.300E-04(NNE) 1.265E-03(WSW) 9.400E-04( SE) 2.617E-O3(ESE)

WHOLE BODY (mrem) 1.335E-03(ESE) 1.335E-03(ESE) 1.775E-03(SSW) 2.040E-03(SSW) 2.290E-03( SE) 6.145E-03(SSW)

SKIN (mrem) 1.815E-03(ESE) 1.815E-03(ESE) 2.130E-03(SSW) 2.535E-03(NNE) 3.375E-03( SE) B.185E-03(ESE)

ORGAN (mrem) 1.595E-04( E 1.595E-04( E ) 2.225E-04(NNE) 1.410E-04(WSW) 1.535E-04( SE) 5.095E-04( E CRITICAL PERS-ORG CH-TH CH-TH CH-TH CH-11l CH-TH CH-TH COMPLIANCE STATUS 10 CFR 50 APP. 1 10 CFR SO APP.I TYPE OF DOSE QUAARTERLY OBJECTIVE X OF APP I YEARLY OBJECTIVE SOF APP. I GAMMA AIR (mrad) S.0 .07 10.0 .19 BETA AIR (mrad) 10.0 .00 20.0 .01 WHOLE BODY (mrem) 2.5 .05 5.0 .12 SKIN (mrem) 7.5 .02 15.0 .05 ORGAN (mrem) 7.5 .00 15.0 .00 CRITICAL PERSON-ORGAN (CH-TH) (CH-TH)

CRITICAL ORGANS: BN-BONE. LV-LIVER. TB-TOTAL BODY. TH-THYROID. KD-KIDNEY. LN-LUNG. GI-GI-LLI CRITICAL PERSON: AD-ADULT. TA-TEENAGER. CH-CHILD. IN-INFANT Maximum Offsite Values (pCi/m3)

Iodine 6.47E-04 Date of calculation: 4/1B/2002 Particulate Matter 8.67E-01 Data Recovery 100%

(priority parameters) 1-20

Figure 5.0-1 I I U #A L4~

U as l w Kfionli I TID Locatin LASALLE COUNTY STATION TNN1ER RING TLD LOCATIONS 1-21

PG 38 10:23 8475644517 PAGE 03/03 04/26/2002 Figure 5.0-2 216-4 0 z 214-4 3 214-3 21340 : 2064 21".6 21t a 21W U 211-2 vozmn*

Grindfilg. ,

i~J2 it Lasssit.SI8Io

1 'LASALLECotmSTATION wGLDW re:U T ONSo 1-22

Figure 5.0-3 S

I* I 0

4 I

I OQand Ridge Verons I

Konsmon I eunsomm I La Salt. Ca"nt Ak SampVng Loeutonl two L-01 NaTs~tt No.1I L-7 Senam L-W OnsWe No.) LAO6 Matm~sef L1.0 NUMzIs No. 4 L-10 SMIaCT L-05 Onsito No.S5 L11 Rasmm LO4 Ntarstt*No.

1-23

Figure 5.0-4 To L-42 LaSalle County Station7 A___

Ingestion and Waterborne Exposure Pathwal Sample Locafions A

Fish L-21Illinois River at Seneca L-27 LSCS Onsite Well at Station N Milk L-28 Marseilles Well

Sediment L-35 Marseilles Pool of Illinois River 0 Water L-36 Illinois River Downstream of Discharge L-40 Illinois River Downstream L-41 Illinois River Downstream L-42 Biros Farm 1-24

TABLE 5.0-1 "C" t12 LaSalle County Station 0 Radiological Environmental a -

Monitoring Stations -.

L-01 Nearsite No. 1 . .,.

L-03 Onsite No. 3 V .

L-04 Nearsite No. 4 %0 %,

L-05 Onsite No. 5 V %,

L-06 Nearsite No. 6 .

L-07 Seneca .

L-08 Marseilles .

L-10 Streator ,

L-11 Ransom . .

L-21 Illinois River at Seneca ,.

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.

L-41 Illinois River Downstream .

L-42 Biros Farm %.

L-Quadrant 1 L-Quadrant 2 .

L-Quadrant 3 WO L-Quadrant 4 ,,

L-Control ,.

CENSUS Dairy Residence Livestock 1-25

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 Far Field No. 4 3.2 E E L-05 Onsite Stat~io6-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-11 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.

1-26

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 (mibl)

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

b Control (background) locations are denoted by a "C" after site code. All other locations are indicators bFarmer sold cows in February, 2000.

Replaced Lowery Dairy in February, 2000.

1-27

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 L-40 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 Discharge4.3 NNE B

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

L-40 Illinois River Downstream 5.2 NNW R L-41 Illinois River Downstream 4.6 NNW A

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

L-Quadrant-1 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.

1-28

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

1. Airborne Onsite, Nearfield and Control Filter exchange Gross Beta Weekly Particulates weekly Gamma Isot. Quarterly Composite L-01 Nearsite No. I (or if weekly gross beta in a L-03 Onsite No. 3 sample exceeds 5X the L-05 Onsite No. 5 average concentration of L-06 Nearsite No. 6 preceding calendar quarter).

L-10 (C) Streator Far Field Gamma Isot. if gross beta in a sample exceeds 10times the yearly mean of control L-04 Rte. 70 samples and radioactivity is L-07 Seneca confirmed as having its origin in L-08 Marseilles airborne effluents from station L-11 Ranson

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

3. Air Sampling Same as I. 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 11 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.

1-29

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

4. TLDs (continued)

Outer Ring Quarterly Gamma Quarterly L-2t2-1,2 213-3,4 214-3,4 215-3,4 216-3,4

5. Milk L-42 (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 Isot. Annually Quad 2 Mike & Gina from each location as 1-131 Annually, on broad leaf Welboume available at harvest. vegetation.

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

7. Ground/Well L-27 LSCS Onsite Well Quarterly Gamma Isot. Quarterly Water L-28 Marseilles Well Tritium

8. 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 1sot. Semiannually Downstream L-41 Illinois River Downstream l1. Land Use Census Milcb Animals

a. Site Boundary to 2 miles 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.

1-30

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

11. Land Use 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.

1-31

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 LaSalle County, Illinois Reporting Period 1st Quarter 2001 (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 Gross 65 0.01 0.027 (52/52) L-10, Streator 0.029 (13/13) 0.029 (13/13) 0 Particulates Beta (0.017-0.041) 13.5 mi. SW, Sector L (0.017-0.046) (0.017-0.046)

(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 Airborne 1-131 35 0.07 <LLD <LLD 0 Iodine 3

(pCi/m )

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 Ba/La-140 15 None - - <LLD 0 Other Gammas 10-15 None - - <LLD 0 Surface Water Gross Beta 6 4 5.4 (3/3) L-21, Illinois River 5.7 (3/3) 5.7 (3/3) 0 (pCi/L) (4.7-5.8) at Seneca (4.9-6.4) (4.9-6.4) 4.0 mi. NE, Sector C Gamma Spec. 6 Cs-134 15 <LLD <LLD 0 Cs-137 18 <LLD <LLD 0 Other ODCM Required 15-30 <LLD <LLD 0 Gammas Tritium 2 200 254(1/1) L-40, Illinois River 254(1/1) <LLD 0 Downstream 5.2 mi. NNW, Sector R

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 20 (82/82) L-201-4, 4.0 mi. N, 24(1/1) 17(2/2) 0 Background (18-24) Sector A (17-17)

(TLDs)

(mRIQtr.)

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

1-32

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 County, Illinois Reporting Period 2nd Quarter 2001 (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 Air Gross 65 0.01 0.022 (49/52) L-05b Onsite No. 5 0.023 (12/13) 0.023 (12/13) 0 Particulates Beta (0.010-0.032) 0.3mi. ESE, Sector F (0.013-0.031) (0.014-0.031)

(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 Airborne Iodine 1-131 30 0.07 <LLD - <LLD 0 (pCi/m3)

Milk 1-131 6 0 .5/ 5 c 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 Fish Gamma Spec. 8 (pCi/g wet)

Cs-134 0.10 <LLD - - <LLD 0 Cs-137 0.10 <LLD - - <LLD 0 Other ODCM Required 0.13-0.26 <LLD - - <LLD 0 Gammas Other Gammas 0.20-0.30 <LLD - - <LLD 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 Locations L-05 and L-10 (C) had identical means of 0.023 pCi/m 3 . Both are detailed in this summary.

c 0.5 pCi/L (May-October); 5.0 pCi/L (November-April)

I - 33

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 Quarter 2001 (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 Surface Water Gross Beta 6 4 4.9 (3/3) L-40, Illinois River 4.9 (3/3) 4.7 (3/3) 0 (pCi/L) (4.1-5.7) Downstream (4.1-5.7) (4.1-5.4) 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 L-21, Illinois River 651 (1/1) 651(1/1) 0 at Seneca 4.0 mi. NE, Sector C 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 22.0 (81/82) L-06, Nearsite No. 6, 26 (1/1) 21.5 (2/2) 0 Background (18-26) 0.4 mi. WSW, Sector (21-22)

(TLDs) M (mR/Qtr.)

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

I - 34

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 County, Illinois Reporting Period 3rd Quarter 2001 (County, State)

Sample Type and Indicator Location with Highest Control Number of Type Number of Locations Highest Meana Locations Non-routine (Units) Analyses LLD Mean a Quarterly Mean Range Meana Results Range Range Air Particulates Gross Beta 65 0.01 0.027 (52/52) L-10, Streator 0.029 (13/13) 0.029 (13/13) 0 (pCi/m3) (0.016-0.040) 13.5 mi. SW, Sector (0.018-0.039) (0.018-0.039)

L 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 Airborne Iodine 1-131 35 0.07 <LLD - - <LL0 0 3

(pCi/mi )

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 1-131 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 5.5 (3/3) L-21, Illinois River at 6.2 (3/3) 6.2 (3/3) 0 (pCi/L) (5.1-5.8) Seneca (6.1-6.4) (6.1-6.4) 6 4.0 mi. NE, Sector C Gamma Spec.

Cs-134 10 <LLD <LLD 0 Cs-137 10 <LLD <LLD 0 Other ODCM Required 20 <LLD <LLD 0 Gammas 2 L40, Illinois River Tritium 200 663 (1/1) Downstream 663 (1/1) 654 (1/1) 4.0 mi NNW, Sector 0 R

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

I - 35

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 Reporting Period 3rd Quarter 2001 (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 19.0 (82/82) L-105-1, 0.7 mi E, 25 (1/1) 18 (2/2) 0 Background (15-25) Sector E (18-18)

(TLDs)

(mR/Qtr.)

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

1-36

Table 5.0-6 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 4th Quarter 2001 (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 0.032 (52/52) L-01b, Onsite No. I 0.033 (13/13) 0.030 (13/13) 0 (pCi/m )

3 (0.016-0.053) 1.5 mi. NNW, Sector R (0.022-0.053) (0.014-0.042)

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 Airborne Iodine 1-131 30 0.07 <LLD - - <LLD 0 3

(pCi/mi )

Milk 1-131 4 0 .5/ 5c None - - <LLD 0 (pCi/L)

Gamma Spec. 4 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 Fish Gamma Spec. 9 (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 Gammas 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 , I I I I I a Mean and range based on detectable measurements only. Fractions indicated in parentheses.

b Locations L-01 and L-06 had identical means of 0.033 pCi/m3. Only L-01 is detailed in this summary.

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

I- 37

Table 5.0-6 (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 4th Quarter 2001 (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 Surface Water Gross Beta 6 4 5.6 (3/3) L-40, Illinois 5.6 (3/3) 4.9 (3/3) 0 (pCi/L) (4.9-6.7) Downstream, 4.0 mi. (4.9-6.7) (4.6-5.1)

Gamma Spec. 6 NNW, Sector R Cs-134 15 <LLD <LLD 0 Cs-137 18 <LLD <LLD 0 Other ODCM Required 15-30 <LLD <LLD 0 Gammas Tritium 2 200 237 (1/1) L-40, Illinois 237(1/1) <LLD 0 Downstream, 4.0 mi.

NNW, Sector R Well Water 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 Gammas Tritium 2 200 <LLD None 0 Gamma Gamma Dose 84 9.7 22.0 (82/82) L-208.2 28 (1/1) 18.5 (2/2) 0 Background (15-28) 4.5 mi. S, Sector J (17-20)

(TLDs)

(mR/Qtr.)

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

1-38

LASALLE APPENDIX II METEOROLOGICAL DATA II - 1

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: JANUARY-MARCH 2001 STABILITY CLASS - EXTREMELY UNSTABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 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 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 - 2

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: JANUARY-MARCH 2001 STABILITY CLASS - MODERATELY UNSTABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 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: 0 II - 3

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: JANUARY-MARCH 2001 STABILITY CLASS - SLIGHTLY UNSTABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 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 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: 0 II - 4

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: JANUARY-MARCH 2001 STABILITY CLASS - NEUTRAL (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 4 11 52 20 1 88 NNE 1 22 16 4 6 49 NE 9 16 15 3 23 67 ENE 5 18 9 7 4 44 E 5 10 6 4 3 28 ESE 4 16 15 9 0 44 SE 4 12 5 6 6 33 SSE 4 6 4 3 0 17 S 4 5 11 7 6 33 SSW 1 8 16 12 Ii 48 SW 3 18 19 7 7 54 WSW 5 24 22 19 10 80 W 21 29 35 34 131 WNW 7 20 46 39 28 141 NW 8 31 45 77 59 220 NNW 3 15 39 31 6 94 VARIABLE 0 0 0 0 0 0 TOTAL 4 78 253 349 283 204 1171 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 6 Hours of missing stability measurements in all stability classes: 0 II- 5

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: JANUARY-MARCH 2001 STABILITY CLASS - SLIGHTLY STABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 1 9 4 1 19 NNE 3 5 0 0 11 NE 11 8 1 0 25 ENE 7 16 3 1 29 E 2 4 0 3 12 ESE 4 7 7 18 40 SE 3 5 5 11 25 SSE 5 9 4 2 21 S 3 7 16 9 37 SSW 9 7 12 26 54 SW 14 11 9 18 54 WSW 5 7 9 5 26 W 5 18 27 22 72 WNW 13 26 20 35 97 NW 7 31 28 11 82 NNW 10 13 9 2 36 VARIABLE 0 0 0 0 0 TOTAL 4 33 102 183 154 164 640 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: 0 II - 6

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: JANUARY-MARCH 2001 STABILITY CLASS - MODERATELY STABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 0 2 0 11 NNE 0 0 0 4 NE 0 1 0 8 ENE 0 0 0 0 E 0 1 0 1 ESE 0 1 0 5 SE 0 8 0 10 SSE 0 1 2 4 5 11 20 S 0 SSW 0 4 24 SW 0 5 14 32 WSW 0 9 8 23 W 1 12 7 26 WNW 0 12 8 29 NW 0 6 0 10 NNW 1 7 0 14 VARIABLE 0 0 0 0 TOTAL 2 9 22 53 74 61 221 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 POWER STATION PERIOD OF RECORD: JANUARY-MARCH 2001 STABILITY CLASS - EXTREMELY STABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 0 0 2 3 4 0 9 NNE 0 0 2 0 0 0 2 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 2 1 0 3 SSE 0 0 0 0 2 0 2 S 0 0 0 2 0 7 9 SSW 0 0 0 1 3 5 9 SW 0 0 2 4 2 15 23 WSW 0 0 0 0 2 25 27 W 0 0 0 3 1 2 6 WNW 0 0 0 3 2 1 6 NW 0 0 1 5 4 0 10 NNW 0 0 1 2 8 0 11 VARIABLE 0 0 0 0 0 0 0 TOTAL 0 0 8 25 29 55 117 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 POWER STATION PERIOD OF RECORD: APRIL-JUNE 2001 STABILITY CLASS - EXTREMELY UNSTABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 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 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 POWER STATION PERIOD OF RECORD: APRIL-JUNE 2001 STABILITY CLASS - MODERATELY UNSTABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 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 5 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 cl asses: 0 II - 10

LASALLE NUCLEAR POWER*STATION PERIOD OF RECORD: APRIL-JUNE 2001 STABILITY CLASS - SLIGHTLY UNSTABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 0 2 2 NNE 0 0 0 NE 0 0 5 ENE 0 0 0 E 0 0 3 ESE 0 0 0 SE 0 0 0 SSE 0 0 0 S 0 0 3 SSW 0 2 8 SW 0 21 30 WSW 0 1 3 W 0 0 1 WNW 0 0 3 NW 0 0 0 NNW 0 0 0 VARIABLE 0 0 0 TOTAL 0 0 0 6 26 26 58 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 II- 11

LASALLE NUCLEAR POWER'STATION PERIOD OF RECORD: APRIL-JUNE 2001 STABILITY CLASS - NEUTRAL (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 1 22 22 6 2 5 58 NNE 1 23 26 8 9 0 67 NE 0 14 14 30 36 0 94 ENE 4 2 11 54 46 2 119 E 1 0 6 13 23 9 52 ESE 0 1 10 10 13 4 38 SE 1 10 8 13 3 1 36 SSE 1 5 9 16 17 1 49 S 2 10 20 16 19 15 82 SSW 1 13 11 14 25 39 103 SW 0 6 12 14 30 42 104 WSW 0 5 13 13 18 21 70 W 0 4 11 15 13 16 59 WNW 0 9 22 30 29 20 110 NW 1 7 6 11 9 11 45 NNW 0 10 18 4 4 7 43 VARIABLE 0 0 0 0 0 0 0 TOTAL 13 141 219 267 296 193 1129 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 - 12

LASALLE NUCLEAR POWER'STATION PERIOD OF RECORD: APRIL-JUNE 2001 STABILITY CLASS - SLIGHTLY STABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 3 75 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 1 7 9 2 0 22 NNE 0 11 5 2 1 19 NE 2 6 4 9 1 23 ENE 0 3 14 9 4. 31 E 1 2 16 9 8 38 ESE 0 3 6 13 3 25 SE 0 4 4 6 9 23 SSE 0 8 4 7 11 31 S 0 8 6 10 29 54 SSW 0 3 7 12 74 99 SW 0 4 10 14 28 60 WSW 3 5 8 4 16 44 W 0 5 8 7 19 41 WNW 0 7 13 14 15 53 NW 2 11 10 10 8 46 NNW 0 6 8 2 0 17 VARIABLE 0 0 0 0 0 0 TOTAL 9 36 93 132 130 226 626 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 POWER STATION PERIOD OF RECORD: APRIL-JUNE 2001 STABILITY CLASS - MODERATELY STABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 1 4 1 0 0 6 NNE 0 1 2 0 0 3 NE 0 0 0 0 0 0 ENE 0 0 0 0 0 2 E 0 0 1 1 2 4 ESE 0 2 3 0 5 13 SE 0 4 8 5 6 25 SSE 0 8 10 5 1 25 S 1 6 18 6 7 38 SSW 0 15 17 10 22 65 SW 0 7 8 12 14 42 WSW 0 1 5 11 8 27 W 0 4 3 2 3 13 WNW 0 2 3 6 0 12 NW 1 2 5 1 0 9 NNW 0 4 0 0 0 4 VARIABLE 0 0 0 0 0 0 TOTAL 3 14 60 84 59 68 288 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 II- 14

LASALLE NUCLEAR POWERSTATION PERIOD OF RECORD: APRIL-JUNE 2001 STABILITY CLASS - EXTREMELY STABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL 0 0 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 0 0 0 0 ESE 0 0 0 0 0 SE 0 0 0 0 0 SSE 0 2 5 S 0 0 3 2 15 SSW 0 0 0 5 15 SW 0 0 0 0 5 WSW 0 0 0 0 9 W 0 0 2 3 15 WNW 0 0 2 1 3 NW 0 0 2 0 4 NNW 1 0 1 4 6 VARIABLE 0 0 0 0 0 TOTAL 1 0 10 17 19 30 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 POWER STATION PERIOD OF.RECORD: JULY-SEPTEMBER 2001 STABILITY CLASS - EXTREMELY UNSTABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 0 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 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 11-16

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: JULY-SEPTEMBER 2001 STABILITY CLASS - MODERATELY UNSTABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 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 1 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 - 17

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: JULY-SEPTEMBER 2001 STABILITY CLASS - SLIGHTLY UNSTABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 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 1 SW 0 WSW 0 W 0 WNW 0 NW 0 NNW 0 VARIABLE 0 TOTAL 0 0 10 14 1 2 27 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- 18

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: JULY-SEPTEMBER 2001 STABILITY CLASS - NEUTRAL (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 2 7 20 9 21 67 NNE 2 14 51 14 1 82 NE 0 20 19 26 27 93 ENE 1 6 21 39 17 86 E 0 8 13 17 4 42 ESE 2 6 19 13 1 41 SE 2 9 12 2 0 27 SSE 2 14 12 4 6 40 S 0 20 25 13 2 64 SSW 2 28 22 10 13 79 SW 3 16 16 17 10 64 WSW 2 25 25 22 14 90 W 2 10 36 9 7 66 WNW 0 8 10 16 17 53 NW 1 7 14 21 14 60 NNW 0 12 19 10 11 52 VARIABLE 0 0 0 0 0 0 TOTAL 21 210 334 242 165 34 1006 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 11-19

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: JULY-SEPTEMBER 2001 STABILITY CLASS - SLIGHTLY STABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 1 9 5 12 6 38 NNE 1 8 14 1 0 27 NE 0 10 16 12 2 42 ENE 1 8 31 10 0 58 E 0 15 27 10 4 58 ESE 2 1 15 7 0 28 SE 0 5 8 4 3 24 SSE 1 3 7 6 8 26 S 3 4 15 9 16 55 SSW 2 2 11 9 11 42 SW 2 6 14 13 5 48 WSW 2 12 14 I1 1 46 W 2 10 9 5 0 30 WNW 2 5 11 9 0 32 NW 0 15 11 6 0 35 NNW 1 7 8 3 0 19 VARIABLE 0 0 0 0 0 0 TOTAL 20 70 120 216 126 56 608 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 POWER STATION PERIOD OF RECORD: JULY-SEPTEMBER 2001 STABILITY CLASS - MODERATELY STABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 4 5 2 14 NNE 2 5 0 11 NE 1 7 0 11 ENE 0 3 0 6 E 4 14 3 24 ESE 5 16 11 36 SE 14 6 3 28 SSE 7 9 4 27 S 8 6 10 32 SSW 3 9 15 37 SW 9 16 12 41 WSW 10 8 6 28 W 12 18 9 51 WNW 9 11 10 33 NW 11 13 5 37 NNW 3 4 5 16 VARIABLE 0 0 0 0 TOTAL 7 43 102 150 95 35 432 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 - 21

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: JULY-SEPTEMBER 2001 STABILITY CLASS - EXTREMELY STABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 0 0 0 NNE 0 0 2 NE 0 0 0 ENE 0 0 0 E 0 0 0 ESE 0 0 0 SE 0 0 1 SSE 0 4 27 S 0 7 24 SSW 0 17 29 SW 0 2 11 WSW 0 0 15 W 0 0 11 WNW 0 0 3 NW 0 1 8 NNW 0 0 3 VARIABLE 0 0 0 TOTAL 0 9 17 53 24 31 134 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 II - 22

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: OCTOBER-DECEMBER 2001 STABILITY CLASS - EXTREMELY UNSTABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 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 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:

II - 23

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: OCTOBER-DECEMBER 2001 STABILITY CLASS - MODERATELY UNSTABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 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 II - 24

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: OCTOBER-DECEMBER 2001 STABILITY CLASS - SLIGHTLY UNSTABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 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 5 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: I 11-25

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: OCTOBER-DECEMBER 2001 STABILITY CLASS - NEUTRAL (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 6 22 22 3 1 54 NNE 7 11 15 0 0 34 NE 5 8 5 15 5 38 ENE 11 7 9 8 1 38 E 2 5 6 0 0 13 ESE 5 0 7 5 1 18 SE 4 1 5 3 7 21 SSE 1 10 14 5 6 37 S 4 8 13 15 25 65 SSW 2 9 15 12 55 93 SW 1 15 18 34 20 88 WSW 3 18 27 27 17 92 W 6 17 34 50 37 144 WNW 4 11 24 53 20 112 NW 5 9 14 33 38 99 NNW 1 9 17 4 9 41 VARIABLE 0 0 0 0 0 0 TOTAL 6 67 160 245 267 242 987 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 - 26

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: OCTOBER-DECEMBER 2001 STABILITY CLASS - SLIGHTLY STABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 1 1 4 10 4 0 20 NNE 0 1 5 4 0 0 10 NE 1 1 4 7 6 0 19 ENE 1 2 3 4 6 0 16 E 0 2 4 10 6 1 23 ESE 0 1 3 7 5 6 22 SE 0 5 1 3 11 8 28 SSE 1 1 5 3 3 13 26 S 0 1 10 15 10 48 84 SSW 0 0 2 10 14 83 109 SW 0 1 6 12 11 46 76 WSW 1 1 5 5 12 9 33 W 0 1 4 7 17 31 60 WNW 0 2 4 15 38 37 96 NW 0 0 4 12 14 11 41 NNW 0 2 8 9 8 1 28 VARIABLE 0 0 0 0 0 0 0 TOTAL 5 22 72 133 165 294 691 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 11-27

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: OCTOBER-DECEMBER 2001 STABILITY CLASS MODERATELY STABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 0 0 0 4 NNE 0 0 0 4 NE 0 0 0 4 ENE 0 0 0 2 E 0 2 0 8 ESE 0 2 2 6 SE 0 3 1 10 SSE 0 3 10 20 S 0 7 3 22 SSW 0 7 24 41 SW 0 12 34 54 WSW 0 11 36 57 W 0 11 9 26 WNW 1 14 4 27 NW 0 8 1 20 NNW 0 3 0 10 VARIABLE 0 0 0 0 TOTAL 1 11 29 67 83 124 315 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 11-28

LASALLE NUCLEAR POWER STATION PERIOD OF RECORD: OCTOBER-DECEMBER 2001 STABILITY CLASS - EXTREMELY STABLE (DIFF TEMP 375-33 FT)

WINDS MEASURED AT 375 FEET WIND SPEED (in mph)

WIND DIRECTION 0.8-3 4-7 8-12 13-18 19-24 > 24 TOTAL 0 0 0 N 0 0 0 0 0 0 NNE 0 0 0 0 0 0 NE 0 0 0 0 0 0 ENE 0 0 0 0 0 0 E 0 0 0 0 0 0 ESE 0 0 0 0 0 2 SE 0 0 2 SSE 0 1 5 0 6 12 S 1 5 8 6 10 30 SSW 1 6 6 8 12 33 SW 0 2 7 7 37 53 WSW 1 1 4 6 24 36 W 0 3 4 2 5 14 WNW 0 4 6 0 18 NW 0 3 3 1 3 10 NNW 0 0 1 0 0 1 VARIABLE 0 0 0 0 0 0 TOTAL 3 25 48 36 97 209 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 - 29

LASALLE APPENDIX III 2001 REMP SAMPLE RESULTS III-1

LASALLE TABLE OF CONTENTS List of Tables ............................................................. 111-3

1.0 INTRODUCTION

......................................................... 111-4 2.0 LISTING OF MISSED SAMPLES ............................................ 111-5 3.0 LISTING OF SAMPLE ANOMALIES ........................................ 111-6 4.0 TLD DATA ............................................................... 111-35 5.0 GRAPHS OF DATA TRENDS ............................................... 111-39 111-2

LASALLE LIST OF TABLES No. Title 1 Airborne Particulates and Iodine-131 ........................................ 111-7 2 Airborne Particulates, Quarterly Composites ................................. 111-12 3 Milk ..................................................................... 111-15 4 Fish, Edible Portions ...................................................... 111-18 5 Bottom Sedim ents ......................................................... 111-21 6 Vegetables ............................................................... 111-22 7 Surface Water ............................................................ 111-25 8 Well W ater .............................................................. 111-30 12 Milch Animals, Nearest Residence, and Nearest Livestock Census .............. 111-31 111-3

LASALLE

1.0 INTRODUCTION

The following constitutes the current 2001 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, 1-131, Ba/La-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 2001.

111-4

2.0 LISTING OF MISSED SAMPLES yLocation Expected Sample Type Code Collection Reason Date TLD L-210-2 06-28-01 TLD L-210-2 found missing during quarterly exchange; placed new 3rd quarter TLD.

111-5

LASALLE 3.0 LISTING OF SAMPLE ANOMALIES Sample Type Location Collection Reason Code Date WW L-27 01-11-01 No sample; collector will check again during next collection.

Update: Sample obtained on 01-18-01. Collector met with station representative who designated a permanent location for well in renovated pump house.

TLD Other 03-29-01 No replacement for L-216-4; omitted from packing list.

Collector placed Spare #2011135.

GASKET LaSalle 04-12-01 Gasket exchange delayed for one week; new receiving personnel at Environmental, Inc. did not place gaskets in collector's supply-pickup container. Station notified.

TLD Other 10-04-01 Collector received no TLDs for exchange for locations L-216-3 and L-216-4; placed Spare L-2016513 at 216-3 and Spare L-2016514 at 216-4.

GASKET LaSalle 10-11-01 Collector notified Program Coordinator that gaskets did not fit charcoal holders; Program Coordinator issued new gaskets; collector exchanged 10-18-01.

NOTE: Problem believed due to collector soaking gaskets in mineral solvent. Program coordinator soaked gaskets in gasoline at laboratory; gaskets expanded.

A L-03 12-13-01 Low meter reading of 158.1 hrs. possible due to work on powerlines around LaSalle Station.

1mI-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, 1-131 = 0.07 pCi/m3 3

Units: 10.2 pCi/m L-01 Nearsite No. 1 Date Volume Gross Date Volume Gross Collected 3 (M ) Beta 1-131 a Collected (m3) Beta 1-131 a 01-04-01 278 3.1 +/-_0.4; 0.7 -0.4+/-t0.5;0.5 07-05-01 283 2.6 +/- 0.4; 0.6 -0.7 +/- 0.4; 0.4 01-11-01 283 2.8 +/-_0.4; 0.7 07-12-01 285 2.3 +/- 0.4; 0.6 01-18-01 289 2.5 +/-_0.3;0.6 -0.2+/-_0.5;0.5 07-19-01 284 2.8 +/-_0.4;0.6 0.9.t0.5;0.5 01-25-01 282 4.1 +/- 0.4; 0.8 07-26-01 284 2.8 +/- 0.4; 0.6 02-01-01 287 3.6 +/- 0.4; 0.8 0.6 +/- 0.4;0.4 08-02-01 287 3.1 +/--0.4;0.7 -0.0-+/-0.5;0.5 02-08-01 283 2.9 +/- 0.4; 0.6 08-09-01 286 3.5 +/- 0.4; 0.7 02-15-01 285 1.9 +/- 0.4; 0.5 1.0 +/- 0.4;0.5 08-16-01 287 2.1 +/--0.3;0.5 -0.5_+/-0.5;0.5 02-22-01 283 3.3 +/- 0.4; 0.7 08-23-01 279 1.9 +/- 0.4; 0.5 03-01-01 285 3.2 +/- 0.4; 0.6 -0.6 +/- 0.4;0.4 08-30-01 288 3.2 +/- 0.3; 0.7 0.3 +/- 0.4; 0.4 03-08-01 282 3.3 +/- 0.4; 0.7 09-06-01 288 2.5 +/- 0.3; 0.6 03-15-01 285 1.8 +/- 0.3; 0.5 0.3 +/- 0.4;0.4 09-13-01 285 2.8 +/-0.4;0.6 -0.6_+/-0.5;0.5 03-22-01 282 1.8 +/- 0.3; 0.4 09-20-01 286 3.0 +/- 0.4; 0.7 03-29-01 290 1.8 +/- 0.4; 0.5 -0.5 +/- 0.5;0.6 09-27-01 282 2.8 +/-0.4;0.6 0.5 +/-0.5;0.5 1st Qtr. Mean+/-s.d. 2.8 +/-0.8 0.0+/- 0.6 3rd Qtr. Mean+/-s.d. 2.7 +/-0.4 -0.0+/- 0.6 04-05-01 282 1.3 +/- 0.3; 0.3 10-04-01 295 3.2 +/- 0.4; 0.7 04-12-01 288 0.6 +/--0.2;0.2 0.2+/-0.3;0.3 10-11-01 283 2.9 +/- 0.4; 0.6 0.3 +/- 0.4;0.4 04-19-01 282 1.9 +/--0.4;0.5 10-18-01 282 2.2 +/-_0.3;0.5 04-26-01 283 1.9 +/- 0.4; 0.5 -0.1 + 0.4;0.4 10-25-01 285 3.3 +/- 0.4; 0.7 -0.1 +/- 0.4;0.4 05-03-01 287 2.7 +/- 0.3; 0.6 11-01-01 290 2.4 +/- 0.3; 0.5 05-10-01 285 2.1 +/--0.4;0.5 0.1-+/-0.4;0.4 11-08-01 283 3.2 +/-0.4; 0.7 -0.4_+/-0.4;0.4 05-17-01 287 2.6 +/- 0.4; 0.6 11-15-01 289 3.7 +/-_0.4; 0.8 05-24-01 282 1.5 +/-_0.3;0.4 -0.5_+/-0.5;0.5 11-23-01 318 5.3 +/- 0.5; 1.1 -0.2_+/-0.4;0.4 05-31-01 285 1.2 +/- 0.3; 0.4 11-29-01 244 2.6 +/-_0.4;0.6 06-07-01 287 1.0 +/- 0.3; 0.3 0.3 +/- 0.4;0.4 12-06-01 290 3.9 +/- 0.4; 0.8 0.8 +/- 0.5;0.5 06-14-01 284 2.7 +/-_0.3; 0.6 12-13-01 280 3.6 +/- 0.4; 0.8 06-21-01 288 2.7 +/-_0.4;0.6 0.3 +/-0.4;0.4 12-20-01 288 3.2 +/- 0.4; 0.7 -0.1 +/- 0.3; 0.3 06-28-01 289 2.4 +/- 0.4; 0.6 12-26-01 249 3.7 +/-_0.5;0.8 2nd Qtr. Mean+/-s.d. 1.9 +/-0.7 0.1+/- 0.3 4th Qtr. Mean+/-s.d. 3.3 +/-0.8 0.0+/- 0.4 a Volume based on two week collection period.

II -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, 1-131 = 0.07 pCi/m 3 Units: 10.2 pCi/m 3 L-03 Onsite No. 3 Date Volume Gross Date Volume Gross Collected 3 (M ) Beta 1-131 a Collected (m3 ) Beta 1-131 a 01-04-01 285 3.0_+/-0.4;0.7 -0.4_+/-0.5;0.5 07-05-01 283 2.3 +/- 0.4; 0.5 0.1 +/- 0.4;0.4 01-11-01 283 2.7 +/- 0.4; 0.7 07-12-01 285 2.4 +/- 0.4; 0.6 01-18-01 290 2.6_+/-0.3;0.6 -0.6_+/-0.5;0.5 07-19-01 284 2.9 +/-_0.4; 0.6 -0.5_+/-0.5;0.5 01-25-01 282 3.6 +/- 0.4; 0.8 07-26-01 284 3.2 +/- 0.4; 0.7 02-01-01 285 1.9 +/- 0.4; 0.5 0.4 +/- 0.4;0.5 08-02-01 287 3.5 +/-_0.4;0.7 0.8-+/-0.5;0.5 02-08-01 273 3.0 +/- 0.4; 0.7 08-09-01 286 3.8 +/- 0.4; 0.8 02-15-01 285 2.4 +/-_0.4;0.6 0.5+/-_0.5;0.5 08-16-01 287 2.6 +/- 0.3; 0.6 0.2 +/- 0.5; 0.5 02-22-01 283 3.9 +/- 0.4; 0.8 08-23-01 280 1.6 +/- 0.4; 0.5 03-01-01 294 3.0 +/- 0.4; 0.6 -0.7 +/- 0.4; 0.4 08-30-01 288 3.4 +/- 0.4; 0.7 -0.9 +/- 0.5;0.5 03-08-01 282 2.3 +/- 0.4; 0.6 09-06-01 288 2.4 +/- 0.3; 0.5 03-15-01 285 1.8 +/-+0.3;0.5 -0.8_+0.4;0.4 09-13-01 280 2.7 +/- 0.4; 0.6 -0.1 +/- 0.5;0.5 03-22-01 282 1.8 +/- 0.3; 0.5 09-20-01 286 2.5 +/- 0.4; 0.6 03-29-01 290 2.2 +/- 0.4; 0.5 -0.4-+/-0.4;0.4 09-27-01 282 2.6 +/- 0.4; 0.6 0.1 +/- 0.5 ;0.5 1st Qtr. Mean+/-s.d. 2.6 +/-0.7 -0.3+/- 0.5 3rd Qtr. Mean+/-s.d. 2.8 +/-0.6 -0.0+/- 0.5 04-05-01 282 2.3 +/- 0.3; 0.5 10-04-01 295 2.9 +/- 0.4; 0.7 04-12-01 288 1.9 +/- 0.3; 0.5 -0.3 +/- 0.4;0.4 10-11-01 283 2.9 +/- 0.4; 0.6 -0.0 +/- 0.4;0.4 04-19-01 282 2.0 +/- 0.4; 0.5 10-18-01 282 2.4 +/- 0.3; 0.5 04-26-01 279 2.1 +/-_0.4; 0.5 -0.1_+/-0.4;0.4 10-25-01 290 3.2 +/- 0.4; 0.7 0.5 +/- 0.4; 0.4 05-03-01 287 2.8 +/- 0.3; 0.6 11101-01 290 1.8 +/-_0.3;0.4 05-10-01 285 2.1 +/-_0.4;0.5 0.3+/-_0.5;0.5 11-08-01 283 1.6 +/- 0.3; 0.4 0.0+/- 0.5;0.5 05-17-01 286 2.7 +/- 0.4; 0.6 11-15-01 289 3.7 +/-_0.4; 0.8 05-24-01 282 1.6 +/- 0.3; 0.4 -0.4 +/- 0.5; 0.5 11-23-01 318 4.8 +/-_0.4; 1.0 0.1 +/-_0.5;0.5 05-31-01 285 1.3 +/- 0.3; 0.4 11-29-01 244 3.2 +/-.0.4;0.7 06-07-01 287 0.9 +/-_0.3;0.3 -0.2_+/-0.5;0.5 12-06-01 290 3.9 +/--0.4;0.8 -0.3-+/-0.5;0.5 06-14-01 283 3.1 +/-_0.4;0.7 12-13-01 268b 3.9 +/- 0.5; 0.8 06-21-01 287 2.4 +/- 0.4; 0.6 -0.1 +/- 0.5;0.5 12-20-01 288 2.9 +/-_0.4;0.7 0.8_+/-0.4;0.4 06-28-01 290 2.3 +/- 0.4; 0.6 12-26-01 248 3.1 +/- 0.5; 0.7 2nd Qtr. Mean+/-s.d. 2.1 +/-0.6 -0.1+/- 0.2 4th Qtr. Mean+/-s.d. 3.1 +/-0.9 0.2+/- 0.4 a Volume based on two week collection period.

b Volume low; timer reading of 158.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> possible due to work on powerlines in area.

111-8

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, 1-131 = 0.07 pCi/m3 3

Units: 10-2 pCi/m L-05 Onsite Station No. 5 Date Volume Gross Date Volume Gross 3 1-131 Collected (m3) Beta I-131 a Collected (M ) Beta a 01-04-01 279 3.7 +/-_0.5;0.8 -0.4+/-0.5;0.5 07-05-01 279 2.3 +/-_0.4; 0.6 -0.0_+/-0.6;0.6 01-11-01 282 2.7 +/-.0.4;0.8 07-12-01 283 2.3 +/--0.4;0.6 01-18-01 288 3.1 +/-_0.4; 0.7 -0.1_+/-0.5;0.5 07-19-01 286 2.6 +/- 0.4; 0.6 -0.6 +/- 0.6; 0.6 01-25-01 285 3.3 +/- 0.4; 0.7 07-26-01 279 2.6 +/- 0.4; 0.6 02-01-01 285 2.4_+/-0.4;0.6 0.0_+/-0.4;0.4 08-02-01 282 3.6_+/-0.4;0.8 0.3_+/-0.5;0.5 02-08-01 283 3.0 +/- 0.4; 0.7 08-09-01 281 4.0_+/-0.4;0.8 02-15-01 285 2.7 +/-_0.4; 0.6 0.4_+/-0.5;0.5 08-16-01 287 2.6 +/- 0.3; 0.6 -0.4 +/- 0.5; 0.5 02-22-01 283 3.2 +/- 0.4; 0.7 08-23-01 280 1.9 +/- 0.4; 0.5 03-01-01 290 3.3 +/- 0.4; 0.7 -0.4 + 0.4;0.4 08-30-01 287 3.5 +/- 0.4; 0.7 -0.0 +/- 0.4; 0.4 03-08-01 282 2.7 +/- 0.4; 0.6 09-06-01 289 2.3 +/- 0.3; 0.5 03-15-01 285 1.8 +/-_0.3; 0.5 -0.1 +/-_0.4;0.4 09-13-01 280 2.3 +/- 0.4; 0.6 -0.1 +/- 0.5; 0.5 03-22-01 282 2.0 +/- 0.3; 0.5 09-20-01 275 2.9 +/- 0.4; 0.7 03-29-01 290 1.9 +/- 0.4; 0.5 -0.4 +/- 0.5 ;0.5 09-27-01 283 2.6_+/-0.4;0.6 -0.8_+/-0.5;0.6 1st Qtr. Mean+/-s.d. 2.8 +/-0.6 -0.1+/- 0.3 3rd Qtr. Mean+/-s.d. 2.7 +/-0.6 -0.2+/- 0.4 04-05-01 282 2.2 +/- 0.3; 0.5 10-04-01 295 2.8 +/-_0.4;0.6 04-12-01 283 2.1 +/--0.3;0.5 -0.1 +/--0.4;0.4 10-11-01 281 3.0 +/- 0.4; 0.7 -0.2 +/- 0.4;0.4 04-19-01 282 2.2 +/- 0.4; 0.5 10-18-01 283 1.9 +/-_0.3;0.5 04-26-01 283 2.0 +/- 0.4; 0.5 -0.3 + 0.4;0.4 10-25-01 285 3.1 +/-_0.4;0.7 0.2_+/-_0.5;0.5 05-03-01 287 2.8 +/- 0.3; 0.6 11-01-01 287 2.3 +/- 0.3; 0.5 05-10-01 286 2.3 +/-_0.4; 0.6 0.2_+/-0.4;0.4 11-08-01 286 2.5 +/-_0.3;0.5 -0.5 +/-0.5;0.5 05-17-01 287 2.7 +/- 0.4; 0.6 11-15-01 294 3.9 +/-_0.4;0.8 05-24-01 282 1.6 +/- 0.3; 0.4 -0.5 +/- 0.5 ;0.5 11-23-01 318 4.4 +/- 0.4; 0.9 -0.4+/- 0.5;0.5 05-31-01 285 1.3 +/-_0.3;0.4 11-29-01 244 2.5 +/- 0.4; 0.6 06-07-01 287 0.8 +/-_0.3;0.3 0.0_+/-0.4;0.4 12-06-01 290 3.8 +/-0.4; 0.8 0.4_+/-0.5;0.5 06-14-01 283 3.1 +/-_0.4; 0.7 12-13-01 276 3.6 +/- 0.4; 0.8 06-21-01 280 2.5 +/-_0.4; 0.6 0.0_+/-0.5;0.5 12-20-01 287 2.7 +/-_0.4; 0.6 0.2_+/-0.4;0.4 06-28-01 287 2.6 +/- 0.4; 0.6 12-26-01 248 3.8 +/- 0.5; 0.8 2nd Qtr. Mean+/-s.d. 2.2 +/-0.6 -0.1+/- 0.2 4th Qtr. Mean+/-s.d. 3.1 +/-0.7 -0.1+/- 0.4 a Volume based on two week collection period.

MlI-9

LASALLE Table 1. Airborne Particulates and Iodine Cartridges Collection: Air Particulates - Continuous; weekly exchange Iodine Cartridges - Continuous; biweekly exchange 3

Required LLD: Gross Beta = 0.01, 1-131 = 0.07 pCi/m 3

Units: 10.2 pCi/m L-06 Nearsite No. 6 Date Volume Gross Date Volume Gross Collected (n 3) Beta 1-131 a Collected (m3) Beta 1-131 a 01-04-01 282 3.2 +/- 0.4; 0.7 0.3 +/- 0.4;0.4 07-05-01 283 2.3 t 0.4; 0.6 0.2+/- 0.4;0.4 01-11-01 283 2.7 +/- 0.4; 0.7 07-12-01 285 2.2 +/- 0.4; 0.5 01-18-01 290 3.0 +/- 0.4; 0.7 0.0 +/- 0.4; 0.4 07-19-01 284 2.9 +/- 0.4; 0.7 -0.7 +/- 0.5; 0.5 01-25-01 282 4.1 +/-_0.4;0.8 07-26-01 284 3.2 +/- 0.4; 0.7 02-01-01 287 2.9 +/- 0.4; 0.7 0.3 +/- 0.5; 0.5 08-02-01 287 3.6 +/- 0.4; 0.8 -0.5 +/- 0.4; 0.4 02-08-01 278 2.8 +/--0.4;0.6 08-09-01 286 3.9 +/-_0.4;0.8 02-15-01 285 2.1 +/-_0.4; 0.5 0.3 +/- 0.5; 0.5 08-16-01 287 2.1 +/-_0.3;0.5 1.1 +/- 0.4;0.5 02-22-01 283 3.5 +/- 0.4; 0.7 08-23-01 279 1.6 +/- 0.4; 0.5 03-01-01 289 3.0 +/- 0.4; 0.6 0.3 +/- 0.4;0.4 08-30-01 288 3.4 +/- 0.4; 0.7 0.4 +/- 0.4; 0.4 03-08-01 282 2.2 +/- 0.4; 0.5 09-06-01 288 2.5 +/- 0.3; 0.6 03-15-01 280 1.7 _+/-0.3; 0.5 -0.2 + 0.5; 0.5 09-13-01 285 2.5 +/- 0.4; 0.6 0.0 +/- 0.5; 0.5 03-22-01 287 1.8 +/- 0.3; 0.5 09-20-01 286 2.9 +/- 0.4; 0.7 03-29-01 290 1.9 +/- 0.4; 0.5 -0.1+/- 0.4; 0.4 09-27-01 283 2.8 +/- 0.4; 0.6 0.4 +/- 0.5; 0.5 1st Qtr. Mean+/-s.d. 2.7 +/-0.7 0.1+/- 0.2 3rd Qtr. Means.d. 2.8 +/-0.7 0.1+/- 0.6 04-05-01 286 2.5 +/-0.3;0.6 10-04-01 295 3.2 +/- 0.4; 0.7 04-12-01 283 1.4 +/- 0.3; 0.4 0.2 +/- 0.4; 0.4 10-11-01 283 3.0 +/- 0.4; 0.7 0.1 +/- 0.4;0.4 04-19-01 282 2.0 +/- 0.4; 0.5 10-18-01 282 2.5 +/- 0.3; 0.6 04-26-01 283 2.3 + 0.4; 0.6 0.4+/-0.5;0.5 10-25-01 285 3.2 +/- 0.4; 0.7 -0.0+/- 0.5;0.5 05-03-01 287 3.2 +/- 0.4; 0.7 11:01-01 290 2.5 +/- 0.3; 0.6 05-10-01 285 2.1 +/-0.4; 0.5 -0.3 +/- 0.4;0.4 11-08-01 283 2.7 +/- 0.3; 0.6 -0.3 +/- 0.5;0.5 05-17-01 287 2.5 +/- 0.4; 0.6 11-15-01 294 3.7 +/- 0.4; 0.8 05-24-01 282 1.7 +/-0.3;0.5 0.2 +/- 0.5; 0.5 11-23-01 318 4.2 +/-0.4;0.9 -0.3 +/- 0.4; 0.4 05-31-01 285 1.0 +/-0.3;0.4 11-29-01 244 2.5 +/-0.4;0.6 06-07-01 287 1.0 +/-0.3;0.3 0.3 +/- 0.4;0.4 12-06-01 290 3.5 +/-0.4;0.7 -0.5 +/- 0.5; 0.5 06-14-01 283 3.0 +/-0.4;0.6 12-13-01 280 3.4 +/-0.4;0.7 06-21-01 287 2.4 +/- 0.4; 0.6 -0.5 +/- 0.4;0.4 12-20-01 288 3.2 +/- 0.4; 0.7 -0.3 +/- 0.4; 0.4 06-28-01 285 2.6 +/- 0.4; 0.6 12-26-01 249 4.7 +/- 0.5; 1.0 2nd Qtr. Mean+/-s.d. 2.1 +/-0.7 0.0+/- 0.3 4th Qtr. Mean+/-s.d. 3.3 +/-0.7 -0.2+/- 0.2 a 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, 1-131 = 0.07 pCi/m3 Units: 10"2 pCi/m 3 L-10 (C) Streator Date Volume Gross Date Volume Gross 3

Collected (m3) Beta I-131 a Collected (M ) Beta I-131a 01-04-01 283 3.8 +/-_0.5;0.8 -0.7_+/-0.4;0.4 07-05-01 283 2.2 +/-_0.4;0.5 -0.4_+/-0.5;0.5 01-11-01 282 2.3 +/-_0.4; 0.8 07-12-01 284 2.3 +/- 0.4; 0.6 01-18-01 288 3.1 +/--0.4;0.7 0.3-+/-0.5;0.5 07-19-01 286 2.8 +/-_0.4;0.6 -0.6_+/-0.6;0.6 01-25-01 294 4.6 +/- 0.4; 0.9 07-26-01 283 3.4 +/- 0.4; 0.7 02-01-01 291 2.7 +/- 0.4; 0.6 0.2+0.4;0.4 08-02-01 287 3.9 +/- 0.4; 0.8 -0.1 +/- 0.5;0.5 02-08-01 283 3.1 +/--0.4;0.7 08-09-01 286 3.8 +/- 0.4; 0.8 02-15-01 285 2.8 +/--0.4;0.6 0.0_+/-0.4;0.4 08-16-01 287 2.4-+/-0.3;0.5 -0.0+/-_0.5;0.5 02-22-01 283 3.6 +/- 0.4; 0.7 08-23-01 285 1.8 +/- 0.4; 0.5 03-01-01 287 3.4_+/-_0.4;0.7 0.4_+/-0.5;0.5 08-30-01 287 3.7 +/-_0.4; 0.8 0.3_+/-0.5;0.5 03-08-01 289 2.6 +/- 0.4; 0.6 09-06-01 287 2.6 +/- 0.3; 0.6 03-15-01 285 1.8 +/--0.3;0.5 -0.2_+0.5;0.5 09-13-01 283 2.8 +/--0.4;0.6 0.1-+/-0.5;0.5 03-22-01 282 1.7 +/- 0.3; 0.4 09-20-01 285 3.1 +/- 0.4; 0.7 03-29-01 290 2.3 +/-_0.4;0.6 -0.0_+/-0.5;0.5 09-27-01 283 2.7 +/- 0.4; 0.6 0.2 +/- 0.4;0.4 1st Qtr. Mean+/-s.d. 2.9 +/-0.8 0.0+/- 0.4 3rd Qtr. Mean+/-s.d. 2.9 +/-0.7 -0.1+/- 0.3 04-05-01 282 2.9 +/- 0.3; 0.6 10-04-01 286 3.2 -+0.4;0.7 04-12-01 287 1.7 +/- 0.3; 0.4 0.3 +/- 0.4; 0.4 10-11-01 284 2.9 +/--0.4;0.7 -0.9_0.5;0.5 04-19-01 283 2.1 +/-_0.4;0.5 10-18-01 285 2.6 +/- 0.3; 0.6 04-26-01 279 2.1 +/-_0.4;0.5 -0.4_+0.5;0.5 10-25-01 285 3.2 +/-0.4;0.7 0.2-0.5;0.5 05-03-01 291 3.0 +/- 0.3; 0.6 11-01-01 287 2.5 +/- 0.3; 0.6 05-10-01 286 2.1 +/-_0.4;0.5 -0.5_+/-0.5;0.5 11-08-01 286 2.5 +/-_0.3;0.6 0.1_0.4;0.4 05-17-01 282 2.5 +/- 0.4; 0.6 11-15-01 294 3.7+/-0.4;0.8 05-24-01 282 1.6 +/- 0.3; 0.4 -0.1 +/- 0.5; 0.5 11-23-01 318 4.2-+/-0.4;0.9 -0.1-0.4;0.4 05-31-01 280 1.4 +/- 0.3; 0.4 11-29-01 248 2.5 +/--0.4; 0.6 06-07-01 287 0.8 +/- 0.3; 0.3 0.6+/- 0.4;0.4 12-06-01 287 4.2-+/-0.4;0.8 -0.5_0.5;0.5 06-14-01 283 3.1 +/-_0.4;0.7 12-13-01 283 3.8 +/--0.4; 0.8 06-21-01 285 2.5 +/--0.4;0.6 0.4-+/-0.4;0.4 12-20-01 285 3.0 +/- 0.4; 0.7 -0.2 +/- 0.3; 0.3 06-28-01 287 2.7 +/- 0.4; 0.6 12-26-01 250 1.4 +/- 0.4; 0.4 2nd Qtr. Mean+/-s.d. 2.2 +/-0.7 0.0+/- 0.5 4th Qtr. Mean+/-s.d. 3.0 +/-0.8 -0.2+/- 0.4 a Volume based on two week collection period.

Ill -11

LASALLE Table 2. Airborne Particulates Collection: Quarterly composites of weekly collections ODCM 3 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; 3

Ba/La-140 = 0.025 pCi/m 3

Units: 104 pCi/m Sample Description and Concentration L-0lI Nearsite No. 1 2001 Collection 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Period Lab Code LAP-3216 LAP-6628,9 LAP-9922 LAP- 11973,4 Volume 3,699 3,715 3,711 3,682 Mn-54 -2.7-+/- 7.8; 7.9 -0.8 +/- 4.3; 4.3 -1.5+/- 7.4; 7.4 4.0-+/- 5.1; 5.1 Fe-59 -6.9 +/- 19.0; 19.0 -2.0_+/- 9.1; 9.2 3.0+/- 10.1; 10.1 20.9 +/- 7.9; 8.7 Co-58 -3.9 +/- 5.8; 5.8 3.2 +/- 2.6; 2.7 -4.2 +/- 6.9; 7.0 4.0_+/- 4.2; 4.3 Co-60 -3.6 +/- 5.3; 5.3 4.6 +/- 4.8; 4.9 6.2+/- 11.4; 11.5 1.7_+/- 4.7; 4.7 Zn-65 -2.0_+/- 10.9; 10.9 -5.5 +/- 9.8; 9.8 -3.0+/- 13.2; 13.2 5.7+_ 12.8; 12.8 Zr/Nb-95 -1.0-+/- 5.3; 5.3 -1.0_+/- 3.9; 3.9 -13.1+/- 12.4; 12.7 0.4 +/- 5.9; 5.9 Cs-134 9.0 +/- 5.2; 5.4 -1.1 +/- 5.0; 5.0 6.9-+/- 7.2; 7.3 -1.6-+/- 5.2; 5.2 Cs-137 -3.3_+/- 6.1; 6.1 -0.1 +/- 3.9; 3.9 -6.4 +/- 7.7; 7.8 -0.4 +/- 5.3; 5.3 Ba/La-140 -81.9+/-+9.5; 17.4 -6.7+/- 5.6; 5.7 -54.1 +/- 7.7; 12.3 20.0 +/- 8.1 ; 8.9 L-03 Onsite No. 3 2001 Collection 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Period Lab Code LAP-3217 LAP-6630 LAP-9923 LAP- 11975 Volume 3,705 3,709 3,706 3,674 Mn-54 5.7 +/- 4.9; 5.0 -8.3 +/- 6.0; 6.2 3.8++/- 5.4; 5.4 3.0+/- 7.1; 7.1 Fe-59 -16.7_+/- 13.2; 13.6 15.5-+/- 10.2; 10.6 -1.5_+/- 12.2; 12.2 6.2_+ 14.2; 14.2 Co-58 1.2 +/- 6.5; 6.5 2.4 +/- 5.4; 5.4 -3.7 +/- 5.0; 5.1 4.7 +/- 4.5; 4.6 Co-60 2.4 +/- 8.5; 8.5 4.4 +/- 4.3; 4.4 2.4_+/- 6.1; 6.1 1.5 +/- 0.0; 0.3 Zn-65 7.1 +/- 10.5; 10.6 2.0-+/- 11.4; 11.4 -7.1+/- 12.1; 12.2 -22.2_+/- 15.4; 15.9 Zr/Nb-95 -8.0 +/- 7.5; 7.6 -1.1 +/- 5.9; 5.9 -1.5+/- 11.5; 11.5 -7.5 +/- 7.4; 7.5 Cs-134 -0.5 +/- 6.4; 6.4 -4.3 +/- 8.4; 8.5 -0.1 +/- 8.6; 8.6 4.2-+/- 8.1; 8.2 Cs- 137 -1.9_+/- 5.8; 5.8 4.9 +/- 6.5; 6.6 0.2 5.6; 5.6 -3.3_+/- 7.4; 7.4 Ba/La-140 23.1 +/- 7.7; 8.7 -43.3_+/- 10.2; 12.8 -41.8+/- 8.2; 11.1 -12.2+/- 10.1; 10.3 111 -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 3 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; 3

Ba/La-140 = 0.025 pCi/m 3

Units: 10-4 pCi/m Sample Description and Concentration L-05 Onsite Station No. 5 2001 Collection 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Period Lab Code LAP-3218,9 LAP-6631 LAP-9924 LAP- 11976 Volume 3,706 3,700 3,678 3,680 Mn-54 -2.5 +/- 4.7; 4.7 0.8_+/- 6.4; 6.4 -3.1 +/- 5.6; 5.7 0.9+/-t 7.3; 7.3 Fe-59 -12.6_+/- 12.8; 13.0 4.2_+/- 8.1; 8.2 -1.5_+/- 6.9; 6.9 8.1 +/- 12.4; 12.5 Co-58 -2.2_+/- 4.1; 4.1 -8.8 +/- 5.5; 5.8 2.7_+/- 4.6; 4.7 0.9-+/- 6.0; 6.0 Co-60 5.8_+/- 6.3; 6.4 -9.2+/- 8.1; 8.3 0.4 +/- 7.5; 7.5 -8.3 +/- 9.2; 9.3 Zn-65 6.5_+/- 7.9; 8.0 2.0_+/- 12.0; 12.0 6.1+/- 13.1; 13.1 -18.4+/- 19.0; 19.3 Zr/Nb-95 -19.7_+/- 5.8; 6.8 -2.6_+/- 6.3; 6.3 -20.6_+/- 14.0; 14.5 -6.7 + 6.3; 6.4 Cs-134 1.5 +/- 5.5; 5.5 -8.2+/- 7.0; 7.2 3.8 +/- 5.7; 5.8 -8.1 +/- 9.0; 9.1 Cs-137 3.9_+/- 4.4; 4.5 -4.2+/- 7.1; 7.1 1.3+/- 7.1; 7.1 -3.8_+/- 7.8; 7.8 Ba/La-140 -25.4 +/- 5.8; 7.4 29.0_+/- 4.6; 6.9 -14.8-+/- 6.2; 6.7 -4.8_+/- 9.0; 9.0 L-06 Nearsite No. 6 2001 Collection 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Period Lab Code LAP-3220 LAP-6632 LAP-9925 LAP- 11977 Volume 3,704 3,710 3,713 3,687 Mn-54 4.2 +/- 6.3; 6.3 6.1 +/- 5.9; 6.0 5.0 +/- 6.4; 6.5 -4.3.t 7.9; 7.9 Fe-59 41.9-+/- 18.6; 20.0 -26.7+/- 16.1; 16.8 18.2_+/- 7.7; 8.3 -8.9_+/- 13.2; 13.3 Co-58 -5.1 +/- 6.2; 6.3 0.2 +/- 6.4; 6.4 10.0+/- 5.1; 5.4 -12.6_+/- 8.4; 8.7 Co-60 -0.7 +/- 6.3; 6.3 1.3 +/- 5.7; 5.7 2.6+/- 8.0; 8.0 4.4_+/- 8.4; 8.5 Zn-65 -12.2-+/- 17.6; 17.7 3.0_+/- 9.1; 9.2 1.0 +/- 14.2; 14.2 -28.9 + 22.1 ; 22.7 Zr/Nb-95 12.4_+/- 5.9; 6.3 -6.8 +/- 6.5; 6.6 -1.5_+/- 11.4; 11.4 2.4_+/- 5.8; 5.9 Cs-134 -7.5 +/- 7.2; 7.3 0.4 +/- 5.7; 5.7 -1.5-+/- 6.9; 6.9 -4.1 + 7.1; 7.1 Cs-137 4.9 +/- 6.5; 6.6 -0.8_+/- 7.1; 7.1 4.2-+/- 6.4; 6.4 -3.3 +/- 8.5; 8.5 Ba/La-140 -4.2 +/- 9.5; 9.5 -62.8-+/- 9.5; 14.7 -14.7_+/- 6.1; 6.6 -83.1-+/- 10.1; 17.9 111 -13

LASALLE Table 2. Airborne Particulates Collection: Quarterly composites of weekly collections ODCM 3 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; 3

Ba/La-140 = 0.025 pCi/m 3

Units: 10.4 pCi/mr Sample Description and Concentration L-10 (C) Streator 2001 Collection 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Period Lab Code LAP-3221 LAP-6633 LAP-9926 LAP- 11978 Volume 3,730 3,700 3,712 3,685 Mn-54 0.8 +/- 6.4; 6.4 0.6 +/- 5.3; 5.3 -1.9 +/- 4.9; 4.9 4.9 +/- 5.9; 5.9 Fe-59 -15.9 +/- 17.4; 17.6 -1.7 +/- 8.9; 8.9 -6.1 +/- 9.0; 9.1 -1.3 +/- 16.1; 16.1 Co-58 2.7 +/- 4.6; 4.6 -2.3 +/- 5.4; 5.4 -0.5 +/- 4.8; 4.8 -5.2 +/- 6.4; 6.5 Co-60 3.1 +/- 5.6; 5.7 -4.3 +/- 6.7; 6.7 0.5 +/- 9.0; 9.0 -2.3 +/- 10.0; 10.0 Zn-65 11.1++/- 11.5; 11.6 3.3 +/- 9.7; 9.7 -2.0 +/- 10.8; 10.8 19.3+_ 15.5; 15.8 Zr/Nb-95 4.6 +/- 6.4; 6.4 -6.7 +/- 4.9; 5.1 -12.4 +/- 9.5; 9.8 8.2+_ 7.2; 7.3 Cs- 134 -10.2 +/- 8.5; 8.7 -6.3 +/- 6.2; 6.3 6.4_+/- 5.4; 5.5 -4.1 +/- 7.3; 7.4 Cs-137 -0.1 +/- 7.2; 7.2 1.3+/- 5.0; 5.0 1.4+/- 6.5; 6.5 -0.8++/- 6.7; 6.7 Ba/La-140 75.8 +/- 6.4; 14.9 -1.2 +/- 7.1; 7.1 -121.9_+/- 10.4; 24.1 -3.0 +/- 7.7; 7.8 11I-14

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

Monthly (November - April)

ODCM 1-131 = 0.5 pCi/L (May - October), 1-131= 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 01-04-01 02-01-01 03-01-01 04-05-01 Lab Code LMI-23 LMI-742 LMI-1449 LMI-2513 1-131 -0.22 +/- 0.19; 0.19 0.03 +/- 0.16; 0.16 0.33 t+0.36;0.37 -0.09 +/- 0.15; 0.15 Mn-54 1.4++/- 2.0; 2.0 1.6+/- 1.9; 1.9 -4.0 +/- 3.8; 3.8 -0.9-+/- 3.5; 3.5 Fe-59 -3.6 +/- 4.7; 4.7 6.7_+/- 4.4; 4.5 -1.4_+/- 7.2; 7.2 -0.4_+/- 7.1; 7.1 Co-58 -0.1-+/- 1.9; 1.9 0.6+/- 1.8; 1.8 -0.3_+/- 4.1; 4.1 0.6 + 4.2; 4.2 Co-60 -1.2-+/- 2.4; 2.4 0.2_+/- 2.9; 2.9 1.4 +/- 4.7; 4.7 0.4+/- 4.0; 4.0 Zn-65 -1.7 +/- 5.5; 5.5 1.4 +/- 5.4; 5.4 3.5_+/- 10.0; 10.1 -4.4+/- 8.1; 8.1 Zr/Nb-95 -1.2_+/- 2.1; 2.1 -0.7-+/- 1.8; 1.8 -3.1 +/- 4.0; 4.0 -3.4 +/- 4.5; 4.5 Cs- 134 1.6_+/- 2.1; 2.1 0.2 +/- 2.3; 2.3 1.1 +/- 4.7; 4.7 -1.0-+/- 5.1; 5.1 Cs-137 -0.4 +/- 2.0; 2.0 -0.9 +/- 2.0; 2.0 0.2-+/- 3.2; 3.2 -0.1 +/- 3.8; 3.8 Ba/La-140 -1.5_+/- 1.7; 1.7 1.8_+/- 1.9; 1.9 -18.1 +/- 5.4; 5.9 -1.3 + 2.7; 2.7 Date Collected 05-03-01 05-17-01 05-31-01 06-15-01 Lab Code LMI-3532 LMI-3997 LMI-4414 LMI-4906 1-131 0.07 +/- 0.20; 0.20 -0.18 +/- 0.19; 0.19 -0.01 +/- 0.20; 0.20 -0.18 +/--0.17; 0.17 Mn-54 5.1 +/- 3.4; 3.5 0.1 +/- 3.0; 3.0 2.4 +/- 1.8; 1.8 -0.2+/- 2.0; 2.0 Fe-59 -0.6 +/- 7.8; 7.8 -3.6 +/- 5.8; 5.8 -3.0-+/- 4.0; 4.0 1.6+/- 5.0; 5.0 Co-58 -0.7-+/- 3.7; 3.7 2.3_+/- 3.0; 3.0 -0.3-+/- 1.9; 1.9 -0.4 2.0; 2.0 Co-60 3.5 +/- 4.5; 4.5 -0.6 +/- 3.3; 3.3 -1.1 +/- 2.3; 2.3 1.0+/- 2.1; 2.2 Zn-65 -2.4 +/- 7.7; 7.7 3.3 +/- 7.3; 7.3 -3.1 +/- 5.6; 5.6 -3.8_+/- 5.2; 5.2 Zr/Nb-95 -0.5 +/- 3.8; 3.8 -0.7+/- 2.8; 2.8 -0.3 +/- 2.0; 2.0 2.0-+/- 2.4; 2.4 Cs-134 -1.1 +/- 4.2; 4.2 -0.4 +/- 3.7; 3.7 -0.8 +/- 2.3; 2.3 -1.9-+/- 2.3; 2.3 Cs-137 2.2 +/- 4.0; 4.0 -0.9_+/- 3.4; 3.4 0.9 +/- 2.2; 2.2 0.3 +/- 2.0; 2.0 Ba/La-140 -2.3 +/- 3.4; 3.4 6.9 +/- 2.2; 2.4 -0.7 +/- 1.7; 1.7 0.5 +/- 1.8; 1.8 MI - 15

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

Monthly (November - April)

ODCM 1-131 = 0.5 pCi/L (May - October), 1-131= 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 06-28-01 07-12-01 07-26-01 08-09-01 Lab Code LMI-5358 LMI-5940 LMI-6521 LMI-6985 1-131 -0.08 +/- 0.22; 0.22 -0.25 +/- 0.21; 0.21 -0.09 +/- 0.14; 0.14 -0.15 _t 0.18; 0.18 Mn-54 0.9 +/- 3.5; 3.5 -2.6_+/- 2.8; 2.8 -0.9 +/- 3.4; 3.4 0.6+/-t 1.9; 1.9 Fe-59 6.5_+/- 7.2; 7.3 -3.1+/- 6.1; 6.1 -1.8_+/- 7.8; 7.8 -12.2_+/- 3.9; 4.2 Co-58 -1.3 +/- 3.7; 3.7 -2.4+/- 3.0; 3.0 -1.6_+/- 3.3; 3.4 2.7_+/- 1.8; 1.8 Co-60 2.9_+/- 4.6; 4.7 -1.7++/- 3.4; 3.4 -1.1 +/- 3.8; 3.8 0.2+/- 2.1; 2.1 Zn-65 3.5 +/- 7.7; 7.7 -4.6 +/- 6.4; 6.4 -10.4-+/- 8.0; 8.1 4.0_+/- 5.0; 5.0 Zr/Nb-95 -3.3_+/- 3.7; 3.8 -3.9_+/- 2.9; 2.9 -1.3_+/- 3.1; 3.1 -4.4 +/- 1.8; 1.9 Cs-134 -2.6 +/- 5.2; 5.2 1.0_+/- 3.6; 3.6 -5.4 +/- 4.5; 4.6 0.2+/- 2.1; 2.1 Cs-137 1.6_+/- 3.8; 3.8 0.3 +/- 3.3; 3.3 -1.4_+/- 3.5; 3.5 -0.1+/- 2.1; 2.1 Ba/La-140 -3.8 +/- 3.5; 3.6 -2.4_+/- 2.2; 2.2 -0.8 +/- 3.7; 3.7 -3.4 +/- 1.5; 1.6 Date Collected 08-23-01 09-06-01 09-20-01 10-04-01 Lab Code LMI-7302 LMI-7801,2 LMI-8168 LMI-8809 1-131 -0.14 +/-_0.16;0.16 -0.16 +/- 0.17; 0.17 -0.35 +/- 0.21; 0.22 0.04 +/- 0.17; 0.17 Mn-54 2.1 +/- 3.6; 3.6 -2.0_+/- 2.2; 2.2 -3.9-+/- 3.9; 3.9 3.3 +/- 2.2; 2.2 Fe-59 1.5 +/- 7.7; 7.7 0.5 +/- 4.4; 4.4 5.1_+/- 10.1; 10.1 -2.5 + 4.2; 4.2 Co-58 -1.9+/- 3.8; 3.8 1.8_+/- 2.0; 2.0 0.4_+/- 4.3; 4.3 -0.5 +/- 2.2; 2.2 Co-60 3.1 +/- 4.0; 4.0 -1.5_+/- 2.8; 2.8 -4.1 +/- 6.5; 6.5 -0.1 +/- 2.4; 2.4 Zn-65 13.4-+/- 8.2; 8.4 -3.8 +/- 4.9; 4.9 5.3-+/- 12.1; 12.1 -1.3-+/- 5.7; 5.7 Zr/Nb-95 -2.9_+/- 4.1; 4.1 0.1-+/-2.2; 2.2 -1.3-+/- 4.3; 4.3 1.7 +/- 2.3; 2.3 Cs-134 -0.7 + 4.2; 4.2 -0.5 + 2.5; 2.5 1.3 +/- 4.9; 4.9 -0.5 +/- 2.3; 2.3 Cs-137 1.6+/-t 3.6; 3.6 -0.7+/- 2.1; 2.1 3.7 +/- 4.0; 4.0 0.5 +/- 2.4; 2.4 Ba/Lfa-140 -1.0_+/- 4.8; 4.8 0.2+/- 1.8; 1.8 -2.8 +/- 4.9; 4.9 -2.6 +/- 1.5; 1.5 111 -16

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

Monthly (November - April)

ODCM 1-131 = 0.5 pCi/L (May - October), 1-131= 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 10-18-01 11-01-01 12-06-01 Lab Code LMI-9401 LMI- 10027 LMI-10936 1-131 -0.05 t 0.17; 0.17 0.13 t+/-0.18;0.18 -0.00 +/- 0.22; 0.22 Mn-54 2.2+/- 3.8; 3.8 -0.9 +/- 1.5; 1.5 -0.8+/- 2.9; 2.9 Fe-59 -6.7 +/- 7.5; 7.6 -5.0_+/- 3.6; 3.7 1.6-+/- 6.8; 6.8 Co-58 1.3+/- 3.8; 3.8 - 1.2 +/- 1.4; 1.4 0.4 +/- 2.7; 2.7 Co-60 3.4+/- 4.1; 4.2 -0.1 +/- 1.5; 1.5 -0.8+/- 3.8; 3.8 Zn-65 1.0 +/- 9.7; 9.7 -0.5 +/- 4.0; 4.0 -12.4_+/- 8.5; 8.7 Zr/Nb-95 1.0-+/- 3.6; 3.6 -3.0 +/- 1.5; 1.6 -3.7 +/- 3.6; 3.6 Cs-134 -4.4-+/- 4.5; 4.5 -0.6 +/- 1.8; 1.8 1.0 +/- 3.9; 3.9 Cs-137 1.5 +/- 4.0; 4.0 1.5-+/- 1.7; 1.7 -0.5 +/- 3.8; 3.8 Ba/La-140 9.1 +/- 3.5; 3.7 3.0 +/- 1.3; 1.4 -3.7 +/- 3.5; 3.6 II -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 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-35 (C) Marseilles Pool of Illinois River Date Collected 05-03-01 05-03-01 05-03-01 05-03-01 Lab Code LF-3457 LF-3458 LF-3459 LF-3460 Type River Carpsucker Carp Channel Catfish Smallmouth Buffalo Mn-54 0.2 +/- 0.6; 0.6 -0.1 +/- 0.7; 0.7 0.2 +/- 0.8; 0.8 0.7+/- 1.0; 1.0 Fe-59 -0.2 +/- 1.7; 1.7 1.5 +/- 1.9; 1.9 0.1 +/- 2.0; 2.0 -0.8 +/- 2.3; 2.3 Co-58 -0.8 _+0.6; 0.6 0.3 +/- 0.5; 0.5 0.2++/- 0.8; 0.8 -0.2 +/- 0.8; 0.8 Co-60 -0.4+/- 0.9; 0.9 0.5 +/- 0.9; 0.9 0.1 +/- 1.0; 1.0 -1.5+/-t 1.3; 1.3 Zn-65 0.3 +/- 1.6; 1.6 -2.3 +/- 2.0; 2.1 -0.5 +/- 2.3; 2.3 -1.2 +/- 2.4; 2.4 Zr/Nb-95 0.2 +/- 0.7; 0.7 -4.0 +/- 1.7; 1.8 -3.0 +/- 1.7; 1.7 -0.0 +/- 0.8; 0.8 Cs-134 -0.5 +/- 0.7; 0.7 0.4++/- 0.8; 0.8 0.2 +/- 1.0; 1.0 -0.2 +/- 1.0; 1.0 Cs-137 -0.1 +/- 0.7; 0.7 -0.1 +/-- 0.7; 0.7 0.0 +/- 0.8; 0.8 -0.7-+/- 0.9; 0.9 Ba/La-140 0.7 +/- 0.8; 0.8 -2.0 +/- 0.7; 0.7 2.7 +/- 0.7; 0.8 0.7_+/- 0.9; 0.9 Date Collected 10-17-01 10-17-01 10-17-01 10-17-01 Lab Code LF-9355 LF-9356 LF-9357 LF-9358 Type Channel Catfish Carp Freshwater Drum Smallmouth Buffalo Mn-54 0.4+/- 0.9; 0.9 -0.6 +/- 0.8; 0.8 -0.2 +/- 0.6; 0.6 0.1 +/- 0.8; 0.8 Fe-59 -1.6+/- 2.1; 2.2 -2.9 +/- 2.1; 2.1 -0.9 +/- 1.6; 1.6 -0.4 +/- 1.7; 1.7 Co-58 -0.0 +/- 0.8; 0.8 0.4++/- 0.8; 0.8 -0.2 +/- 0.6; 0.6 0.1 +/- 0.8; 0.8 Co-60 0.1 +/- 0.9; 0.9 0.4 +/- 0.7; 0.7 0.7 +/- 0.7; 0.7 -0.8 +/- 1.1; 1.1 Zn-65 2.6+/- 1.9; 1.9 1.2 +/- 2.5; 2.5 0.6 +/- 2.0; 2.0 -1.0 +/- 1.9; 1.9 Zr/Nb-95 1.7 0.6; 0.7 0.2++/- 0.8; 0.8 0.4 +/- 0.5; 0.5 1.9 +/- 0.8; 0.8 Cs-134 0.1 +/- 1.0; 1.0 -0.6 +/- 1.1; 1.1 -0.1 +/- 0.8; 0.8 -0.1 +/- 0.8; 0.8 Cs-137 0.2 - 0.8; 0.8 0.3 +/- 0.7; 0.7 -0.3 +/- 0.8; 0.8 0.1 +/- 1.0; 1.0 Ba/La-140 -0.4 +/- 0.9; 0.9 -5.0 +/- 1.3; 1.5 -1.1 +/- 0.7; 0.7 3.0+/-t 0.6; 0.8 i1i -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-35 (C) Marseilles Pool of Illinois River Date Collected 10-17-01 Lab Code LF-9359 Type River Carpsucker Mn-54 0.7+/- 0.9; 0.9 Fe-59 0.6_+/- 1.8; 1.8 Co-58 -0.8 +/- 0.7; 0.7 Co-60 -0.0_+/- 1.2; 1.2 Zn-65 0.5 +/- 2.2; 2.2 Zr/Nb-95 0.7 +/- 0.8; 0.8 Cs-134 0.0 +/- 0.9; 0.9 Cs-137 -1.3 +/- 0.9; 0.9 Ba/La-140 2.0 +/- 0.8; 0.8 11I-19

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 05-03-01 05-03-01 05-03-01 05-03-01 Lab Code LF-3461 LF-3462 LF-3463 LF-3464 Type Carp Smallmouth Buffalo River Carpsucker Freshwater Drum Mn-54 -0.0 +/- 0.8; 0.8 -0.2 +/- 0.8; 0.8 0.6_+/- 0.4; 0.4 0.2 +/- 0.8; 0.8 Fe-59 2.6_+/- 1.6; 1.6 0.7+/- 1.5; 1.5 -0.5+/- 1.1; 1.1 -0.2_+/- 1.5; 1.5 Co-58 -0.3 +/- 0.7; 0.7 0.3 +/- 0.7; 0.7 0.3_+/- 0.5; 0.5 -0.3 +/- 0.7; 0.7 Co-60 0.1 +/- 0.8; 0.8 0.2+/- 0.8; 0.8 -0.2 +/- 0.6; 0.6 -0.5 +/- 0.9; 0.9 Zn-65 -0.7+/- 2.1; 2.1 -0.8-+/- 2.1; 2.1 -0.7 +/- 1.4; 1.4 -0.9 +/- 2.0; 2.0 Zr/Nb-95 -0.7+/- 0.8; 0.8 0.2+/- 0.7; 0.7 0.2 +/- 0.5; 0.5 -0.4 +/- 0.7; 0.7 Cs-134 0.3 +/- 0.6; 0.6 -0.8 +/- 0.8; 0.8 0.4+/- 0.5; 0.5 -0.1 +/- 0.9; 0.9 Cs-137 0.2 +/- 0.7; 0.7 0.3 +/- 0.6; 0.6 0.5_+/- 0.5; 0.5 -0.1 +/- 0.8; 0.8 Ba/La-140 -1.0 +/- 0.9; 0.9 -0.2_+/- 0.8; 0.8 0.2 +/- 0.5; 0.5 -0.8 +/- 0.9; 0.9 Date Collected 10-17-01 10-17-01 10-17-01 10-17-01 Lab Code LF-9351 LF-9352 LF-9353 LF-9354 Type Channel Catfish Carp Freshwater Drum River Carpsucker MIn-54 0.1 +/- 0.9; 0.9 0.5 +/- 0.8; 0.8 0.1 +/- 0.7; 0.7 0.3_+/- 0.9; 0.9 Fe-59 -0.2 +/- 1.9; 1.9 0.2_+/- 1.3; 1.3 -2.1 _1.8; 1.8 -0.7_+/- 1.6; 1.6 Co-58 -0.3 +/- 0.6; 0.6 0.5 +/- 0.7; 0.7 0.2 _ 0.7; 0.7 -0.4 +/- 0.9; 0.9 Co-60 -0.4 +/- 0.9; 0.9 -0.3-+/- 1.2; 1.2 -0.0+/- 1.0; 1.0 -0.3 +/- 1.0; 1.0 Zn-65 -0.7_+/- 2.2; 2.2 -0.8-+/- 2.1; 2.1 -1.0+/- 2.1; 2.1 1.1 +/- 2.1; 2.1 Zr/Nb-95 0.5 +/- 0.6; 0.6 -0.3 +/- 0.7; 0.7 -0.4+/- 0.7; 0.7 -0.4 _ 2.0; 2.0 Cs-134 0.7-+/- 0.7; 0.7 0.3-+/- 0.8; 0.8 -0.7+/- 0.7; 0.7 0.1 +/- 0.9; 0.9 Cs-137 0.1 +/- 0.8; 0.8 -0.2+/- 0.7; 0.7 0.7_+/- 0.8; 0.8 0.0 +/- 0.8; 0.8 Ba/La-140 1.0_+/- 0.9; 0.9 -1.1 +/- 1.0; 1.0 -0.4 +/- 0.8; 0.8 -2.7+/- 1.0; 1.1 11I -20

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; Ba/La = 0.60 Units: 10-2 pCi/g dry weight Sample Description and Concentration L-40 Illinios River Downstream Date Collected 05-10-01 10-04-01 Lab Code LBS-3811 LBS-8819 Mn-54 0.3.t 0.8; 0.8 -0.3+/- 1.4; 1.4 Fe-59 -0.4 +/- 1.7; 1.7 -6.3 +/- 3.3; 3.4 Co-58 -0.3 +/- 0.6; 0.6 2.3+/-- 1.3; 1.3 Co-60 0.4_+/- 1.0; 1.0 0.4+/- 1.7; 1.7 Zn-65 -0.8_+/- 2.1; 2.1 -0.6_+/- 4.1; 4.1 Zr/Nb-95 -0.9 +/- 0.8; 0.9 -5.8 +/- 1.4; 1.6 Cs-134 0.7_+/- 0.9; 0.9 1.8 +/- 1.6; 1.7 Cs-137 2.9_+/- 1.6; 1.6 6.4 +/- 2.9; 3.0 Ba/La-140 -1.6 +/- 0.8; 0.8 -45.1 +/- 1.6; 6.3 L-41 Illinios River Downstream Date Collected 05-10-01 10-04-01 Lab Code LBS-3812 LBS-8820 Mn-54 0.2_+/- 0.9; 0.9 1.0+/- 1.5; 1.5 Fe-59 -0.7 +/- 2.3; 2.3 -4.9 +/- 3.8; 3.8 Co-58 -0.8 +/- 0.8; 0.8 1.7_+/- 1.3; 1.4 Co-60 0.6++/- 1.1; 1.1 -0.0_+/- 1.8; 1.8 Zn-65 -5.0 +/- 2.7; 2.8 -6.8 +/- 4.0; 4.1 Zr/Nb-95 -3.3 +/- 1.0; 1.1 -4.0 +/- 1.5; 1.6 Cs-134 2.2 +/- 1.2; 1.2 2.3 +/- 1.8; 1.8 Cs-137 4.8 +/- 2.3; 2.4 2.0-+/- 1.6; 1.7 Ba/La-140 -1.2+/- 1.1; 1.1 -30.4 +/- 1.6; 4.4 111-21

LASALLE Table 6. Vegetation Collection: Annualiy 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 T _('%*-*..-d f'* .,.flfl 1*. V (-'1 ,arm,nn,.Ic.

TL -f--..*l 4-ll ,J .1.1-.P 0I1IL-.IL L.

4..L

-LLL:I Date Collected 08-30-01 08-30-01 Lab Code LVE-7576 LVE-7577 Type Cabbage Beets Mn-54 0.2 +/- 0.4; 0.4 0.4 +/- 0.8; 0.8 Fe-59 0.0 +/- 0.9; 0.9 2.2_+ 1.4; 1.5 Co-58 0.0 +/- 0.4; 0.4 -0.6 +/- 0.7; 0.7 Co-60 0.1 +/- 0.4; 0.4 -0.1 +/- 0.8; 0.8 Zn-65 -0.7 +/- 1.1; 1.1 -1.2_ 1.7; 1.7 Zr/Nb-95 -0.4 +/- 0.7; 0.7 -0.5 +/- 0.6; 0.6 1-131 0.0 +/- 0.4; 0.4 -0.1 +/-0.7; 0.7 Cs-134 -0.0 +/- 0.4; 0.4 -0.1 +/- 0.8; 0.8 Cs-137 -0.2 +/- 0.4; 0.4 -0.1 +/--0.8; 0.8 Ba/La-140 0.5 +/- 0.3; 0.3 0.2 +/- 0.7; 0.7 L-Ouad 1 Diane Partridge Date Collected 08-30-01 08-30-01 Lab Code LVE-7567 LVE-7568 Type Cabbage Potatoes Mn-54 -0.1 +/- 0.8; 0.8 0.2 +/- 0.5; 0.5 Fe-59 0.4 +/- 1.5; 1.5 -0.4_+/- 1.4; 1.4 Co-58 0.1 +/- 0.7; 0.7 0.4+/- 0.5; 0.5 Co-60 0.4 +/- 0.7; 0.7 0.4+/- 0.8; 0.8 Zn-65 0.5 +/- 1.8; 1.8 1.1 +/- 1.7; 1.7 Zr/Nb-95 -0.3 +/- 0.8; 0.8 -0.3 +/- 1.2; 1.2 1-131 0.5 +/- 0.7; 0.7 -0.4 +/- 0.4; 0.4 Cs-134 -0.1 +/- 0.9; 0.9 -0.4 +/- 0.7; 0.7 Cs-137 0.5 +/- 0.9; 0.9 -0.2 +/- 0.7; 0.7 Ba/La-140 0.1 +/- 0.7; 0.7 -1.3 +/- 0.8; 0.8 III -22

LASALLE Table 6. Vegetation Collection: Annual ly 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 Welboume Date Collected 08-30-01 08-30-01 Lab Code LVE-7569 LVE-7570 Type Beets Beet greens Mn-54 1.3_+/- 1.0; 1.1 0.8 +/- 0.7; 0.7 Fe-59 -0.9 +/- 1.9; 1.9 -1.0_+/- 1.5; 1.5 Co-58 -0.4 +/- 0.7; 0.7 -0.3 +/- 0.7; 0.7 Co-60 0.2-+/- 1.0; 1.0 0.4 +/- 0.8; 0.8 Zn-65 -0.9 +/- 2.1; 2.1 0.1 +/- 2.1; 2.1 Zr/Nb-95 -0.1 +/- 0.9; 0.9 0.1 +/- 0.7; 0.7 1-131 0.1 +/- 0.6; 0.6 0.5 +/- 0.6; 0.6 Cs-134 0.4_+/- 0.8; 0.8 0.1 +/- 1.0; 1.0 Cs-137 0.5 +/- 0.8; 0.8 -0.2 +/- 0.8; 0.8 Ba/La-140 -0.9 +/- 0.7; 0.7 -0.4 +/- 0.8; 0.8 L-Quad 3 Michael Olson Date Collected 08-30-01 08-30-01 Lab Code LVE-7571 LVE-7572 Type Beets Beet greens Mn-54 0.2 +/- 0.7; 0.7 -0.7 +/- 0.9; 0.9 Fe-59 0.8 +/- 1.4; 1.4 1.6_+/- 1.8; 1.8 Co-58 0.4 +/- 0.7; 0.7 1.0 +/- 1.0; 1.0 Co-60 0.8 +/- 0.8; 0.8 0.5_+/- 1.2; 1.2 Zn-65 1.2_+/- 1.5; 1.5 0.5 +/- 2.3; 2.3 Zr/Nb-95 0.8 +/- 0.6; 0.6 -0.3 +/- 0.8; 0.8 1-131 0.9 +/- 0.7; 0.7 0.8 +/- 0.8; 0.8 Cs-134 -0.2 +/- 0.9; 0.9 0.7_+/- 0.9; 0.9 Cs-137 0.2 +/- 0.7; 0.7 0.1 +/- 0.8; 0.8 Ba/La-140 -0.1 +/- 0.8; 0.8 -1.5 +/- 1.0; 1.0 HI -23

LASALLE Table 6. Vegetation Collection: Annually 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 4 Robert Eisers Date Collected 08-30-01 08-30-01 Lab Code LVE-7573,4 LVE-7575 Type Cabbage Potatoes Mn-54 0.3 +/- 0.4; 0.4 0.3 +/- 0.9; 0.9 Fe-59 0.4 +/- 0.8; 0.8 1.4 +/- 2.2; 2.2 Co-58 0.0 +/- 0.3; 0.3 0.6 +/- 0.8; 0.8 Co-60 -0.3 +/- 0.4; 0.5 1.3 +/- 0.9; 0.9 Zn-65 -1.1 +/- 0.9; 0.9 -0.5 +/- 2.4; 2.4 Zr/Nb-95 -0.1 +/- 0.4; 0.4 0.4 +/- 0.9; 0.9 1-131 -0.7 +/- 0.4; 0.4 -0.3 +/- 0.7; 0.7 Cs-134 0.2 +/- 0.5; 0.5 -0.3 +/- 1.0; 1.0 Cs-137 -0.2 +/- 0.4; 0.4 -0.5 +/- 0.9; 0.9 Ba/La-140 -0.6 +/- 0.3; 0.3 0.4_+/- 1.0; 1.0 11 -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 2001 Collection January February March Period Lab Code LSW-948 LSW-1697 LSW-2333 Gross Beta 5.6 +/- 1.6; 1.8 6.4 +/- 1.9; 2.2 4.9 +/- 1.7; 1.9 Mn-54 0.9 +/- 1.5; 1.5 -0.1 +/- 1.3; 1.3 2.0+/- 3.1; 3.1 Fe-59 -5.1 +/- 3.2; 3.3 -0.2_+/- 3.2; 3.2 -1.8 +/- 6.5; 6.5 Co-58 0.5 +/- 1.6; 1.6 -1.5_+/- 1.7; 1.7 1.1 +/- 3.4; 3.4 Co-60 0.7_+/- 1.6; 1.6 0.9 +/- 1.7; 1.7 2.9 +/- 3.7; 3.7 Zn-65 0.5-+/- 3.4; 3.4 3.0 +/- 3.0; 3.0 -5.8 +/- 6.9; 7.0 Zr/Nb-95 0.6 +/- 1.8; 1.8 0.9 +/- 1.5; 1.5 1.6-+/- 3.0; 3.0 Cs-134 3.2+/- 2.1; 2.1 -0.5_+/- 1.8; 1.8 2.3 +/- 3.7; 3.7 Cs-137 -0.9 +/- 1.5; 1.5 0.7 +/- 1.6; 1.6 -0.4+/-. 3.4; 3.4 Ba/La-140 -5.9 +/- 1.8; 2.0 -3.3 +/- 2.2; 2.2 -7.1 +/- 4.3; 4.4 2001 Collection April May June Period Lab Code LSW-3758 LSW-4641 LSW-5556 Gross Beta 5.4 +/- 1.8; 2.0 4.5 +/- 1.3;1.5 4.1 +/-_1.4; 1.6 Mn-54 0.2_+/- 0.8; 0.8 -1.0+/- 1.8; 1.8 0.0 +/- 1.6; 1.6 Fe-59 -0.4_+/- 1.6; 1.6 -0.4 +/- 3.3; 3.3 -2.2.+/- 3.2; 3.2 Co-58 0.3 +/- 0.8; 0.8 -1.1+/- 1.9; 1.9 -0.1+/- 1.8; 1.8 Co-60 1.0_+/- 0.9; 0.9 1.0 +/- 2.3; 2.3 0.2 1.6; 1.6 Zn-65 0.6_+/- 1.6; 1.6 0.5++/- 3.8; 3.8 3.1+/- 3.1; 3.1 Zr/Nb-95 -3.3_+/- 1.0; 1.1 -0.8_+/- 1.9; 1.9 2.5+/- 1.8; 1.9 Cs-134 0.3_+/- 1.0; 1.0 -3.2+/- 2.0; 2.1 1.0 2.3; 2.3 Cs-137 -0.2_+/- 1.0; 1.0 -0.9-+/- 2.0; 2.0 -0.7+/- 2.1; 2.1 Ba/La-140 2.6_+/- 1.0; 1.0 1.0+/- 1.8; 1.8 4.9+/- 1.6; 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-21 (C) Illinois River at Seneca 2001 Collection July August September Period Lab Code LSW-6732 LSW-7798 LSW-8724 Gross Beta 6.1 +/- 1.5; 1.8 6.4 +/- 1.2; 1.6 6.1 +/- 1.7; 1.9 Mn-54 0.1 +/- 0.6; 0.6 2.1++/- 1.9; 1.9 1.0+/- 1.8; 1.8 Fe-59 -0.5+/- 1.1; 1.1 3.8 +/- 3.3; 3.3 3.3 +/- 3.5; 3.5 Co-58 0.8_+/- 0.6; 0.6 0.6 +/- 1.6; 1.6 0.3 +/- 1.7; 1.7 Co-60 -0.2 +/- 0.7; 0.7 1.4 +/- 1.7; 1.7 1.6+/- 1.8; 1.8 Zn-65 -0.7-+/- 1.2; 1.2 1.6 +/- 3.9; 3.9 -0.1 _ 3.6; 3.6 Zr/Nb-95 -0.2 +/- 0.7; 0.7 -5.5 +/- 4.2; 4.3 -0.1 1.7; 1.7 Cs-134 0.5 +/- 0.7; 0.7 -0.6_+/- 2.0; 2.0 0.1 _ 2.0; 2.0 Cs-137 0.3 +/- 0.7; 0.7 0.1 +/- 2.4; 2.4 0.4+/- 1.6; 1.6 Ba/La-140 -0.1 +/- 0.7; 0.7 -0.5+/- 1.9; 1.9 -4.9+/- 2.0; 2.1 2001 Collection October November December Period Lab Code LSW-9863 LSW-10967 LSW- 11620 Gross Beta 5.1 +/- 1.6; 1.7 4.6_+/-_1.1 ;1.3 4.9 +/- 1.1 ; 1.3 Mn-54 0.3 +/- 0.9; 0.9 2.0-+/- 1.6; 1.6 0.2 +/- 2.9; 2.9 Fe-59 -1.1_+/- 1.9; 2.0 4.6-+/- 2.7; 2.8 -2.0 +/- 5.5; 5.5 Co-58 0.6+/- 0.9; 0.9 2.2_+/- 2.1; 2.1 -1.1 t 2.1; 2.1 Co-60 1.3++/- 1.1; 1.2 0.2_+/- 1.9; 1.9 1.0 +/- 2.7; 2.7 Zn-65 -0.3 +/- 1.9; 1.9 -6.3 +/- 4.5; 4.6 -0.6 +/- 4.9; 4.9 Zr/Nb-95 0.1+/- 1.0; 1.0 -1.1++/- 1.8; 1.9 1.1 +/- 2.8; 2.8 Cs-134 0.5-+/- 1.1; 1.1 0.1 +/- 2.2; 2.2 -0.1 +/- 3.0; 3.0 Cs- 137 0.8-+/- 1.0; 1.0 1.2++/- 1.9; 1.9 0.7 +/- 3.3; 3.3 Ba/La-140 0.5-+/- 1.4; 1.4 2.1 +/- 2.5; 2.5 1.3+/- 4.1; 4.1 IM -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, Ba/La-140 = 15 pCi/L Units: pCi/L Sample Description and Concentration L-40 Illinois River Downstream 2001 Collection January February March Period Lab Code LSW-949 LSW-1698,9 LSW-2334 Gross Beta 5.7 +/- 1.7; 1.9 5.8 +/- 1.3; 1.4 4.7 +/- 1.6; 1.8 Mn-54 0.7_+/- 1.2; 1.2 -0.0 +/- 1.2; 1.2 0.7+/- 3.4; 3.4 Fe-59 -1.0++/- 2.8; 2.8 0.2 +/- 2.2; 2.2 -0.8 +/- 6.2; 6.2 Co-58 0.3+/- 1.1; 1.1 -1.2_+/- 1.4; 1.4 -0.9 +/- 2.9; 2.9 Co-60 0.6+/- 1.5; 1.5 -0.3+/-t 1.2; 1.2 -1.7 +/- 4.0; 4.0 Zn-65 0.3 +/- 2.7; 2.7 -0.0_+/- 2.6; 2.6 -0.8-+/- 7.0; 7.0 Zr/Nb-95 -0.5 +/- 1.2; 1.2 -0.6 +/- 1.3; 1.3 -2.2_+/- 3.8; 3.8 Cs- 134 0.3 +/- 1.5; 1.5 1.3_+/- 1.5; 1.5 -1.5 +/--4.1; 4.1 Cs-137 1.5 +/- 1.3; 1.3 0.3_+/- 1.2; 1.2 1.2+/- 3.2; 3.2 Ba/La-140 -1.3+/- 1.4; 1.4 1.3 +/- 1.3; 1.3 2.6 3.9; 3.9 2001 Collection April May June Period Lab Code LSW-3759 LSW-4642 LSW-5557,8 Gross Beta 4.1 +/- 1.0; 1.2 4.8 +/- 1.0;-1.3 5.7 +/- 1.2; 1.3 Mn-54 0.8 +/- 1.3; 1.3 -0.3 +/- 1.5; 1.5 0.1_+/- 1.2; 1.2 Fe-59 -1.1 +/- 2.3; 2.3 2.1 +/- 2.9; 2.9 -4.5 +/- 2.4; 2.5 Co-58 0.2 +/- 1.3; 1.3 -0.8 +/- 1.5; 1.5 -0.6 +/- 1.2; 1.2 Co-60 -0.3 +/- 1.3; 1.3 0.1 +/- 1.9; 1.9 0.9 +/- 1.2; 1.2 Zn-65 -2.3_+/- 2.6; 2.6 -0.1 +/- 3.3; 3.3 0.3 +/- 2.8; 2.8 Zr/Nb-95 -1.1_+/- 1.3; 1.3 -1.0+/- 1.7; 1.7 -0.7_+/- 1.2; 1.2 Cs-134 -0.2 +/- 1.8; 1.8 -0.3 +/- 1.7; 1.7 -0.1 +/- 1.4; 1.4 Cs-137 -0.2_+1.2; 1.2 0.2 +/- 2.0; 2.0 0.3 1.3; 1.3 Ba/La-140 6.0 +/- 1.3; 1.6 1.7_+/- 2.1; 2.2 -3.0+/- 1.4; 1.5 IT1-27

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 2001 Collection July August September Period Lab Code LSW-6733 LSW-7799 LSW-8725 Gross Beta 5.8 +/- 0.9; 1.3 5.7 +/- 1.1 ; 1.4 5.1 +/- 1.7; 1.9 Mn-54 0.2_+/- 0.9; 0.9 -1.0+/- 1.8; 1.9 1.4 +/- 1.7; 1.7 Fe-59 -1.7 +/- 2.0; 2.0 0.3 +/- 4.7; 4.7 -0.8++/- 3.2; 3.2 Co-58 0.3_+/- 1.0; 1.0 1.2+/- 2.2; 2.2 0.4+/- 1.5; 1.5 Co-60 0.2+/- 1.1; 1.1 -1.8+/- 1.8; 1.8 -0.3 +/- 1.7; 1.7 Zn-65 -4.4 +/- 2.5; 2.6 0.4_ 3.9; 3.9 -1.0+/- 3.0; 3.0 Zr/Nb-95 -2.7++/- 1.1; 1.2 -0.9+/- 2.1; 2.1 -1.7_+/- 1.6; 1.6 Cs-134 -0.9 +/- 1.0; 1.0 -1.9+/- 2.4; 2.4 -0.5 +/- 2.0; 2.0 Cs-137 0.2-+/- 1.0; 1.0 0.5 2.4; 2.4 1.5_+/- 1.8; 1.8 Ba/La-140 -1.6+/- 1.2; 1.2 1.0+/- 1.9; 1.9 -1.8++/- 2.0; 2.0 2001 Collection October November December Period Lab Code LSW-9864 LSW-10968 LSW- 11621 Gross Beta 5.1 +/- 1.5; 1.7 6.7 +/- 1.2 ;-1.6 4.9 +/- 1.0; 1.3 Mn-54 1.2 + 1.7; 1.7 -2.1 +/- 2.7; 2.7 -0.5 +/- 2.9; 2.9 Fe-59 7.3 +/- 4.6; 4.7 -1.7++/- 3.9; 3.9 -0.5 +/- 4.0; 4.0 Co-58 1.1 +/- 2.0; 2.0 -0.4-t 2.6; 2.6 0.8 +/- 2.5; 2.5 Co-60 -0.2 +/- 2.8; 2.8 2.7 +/- 2.4; 2.4 -3.1 +/- 3.5; 3.5 Zn-65 -1.4++/- 4.4; 4.4 4.7+/- 4.9; 5.0 0.3 +/- 5.4; 5.4 Zr/Nb-95 3.7+/- 2.4; 2.4 1.5 +/- 2.8; 2.8 -4.1 . 3.3; 3.3 Cs-134 -2.0_+/- 2.4; 2.5 2.3 +/- 2.9; 2.9 2.1 +/- 3.0; 3.0 Cs-137 2.6 +/- 2.5; 2.6 3.7++/- 3.1; 3.1 3.0 +/- 3.3; 3.3 Ba/La-140 -8.0 +/- 2.3; 2.5 6.5 +/- 3.3; 3.5 -4.6 +/- 2.9; 3.0 HI -28

LASALLE Table 7. Surface Water Collection: Quarterly composites of weekly collections ODCM Required LLD: H-3 = 200 pCi/L Units: pCi/L 2001 Sample Description and Concentration Collection Period Lab Code Tritium L-21 (C) Illinois River at Seneca 1st Quarter LSW- 2335,6 180 +/- 70; 72 2nd Quarter LSW- 5561 651 +/- 101; 134 3rd Quarter LSW- 8726,7 654 +/- 74; 97 4th Quarter LSW- 11622,3 157 +/- 63; 65 L-40 Illinois River Downstream 1st Quarter LSW- 2337 254 +/- 101; 107 2nd Quarter LSW- 5562 153 +/- 81; 84 3rd Quarter LSW- 8728 663 +/- 105; 138 4th Quarter LSW- 11624 237 +/- 93; 98 III -29

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 01-18-01 04-12-01 07-12-01 10-11-01 Lab Code LWW-265 LWW-2773 LWW-6002 LWW-9130 H-3 -30_+/- 87; 87 8 +/- 80; 80 12 +/- 74; 74 50 +/- 79; 79 Mn-54 -4.1 +/- 3.5; 3.5 2.4 +/- 2.7; 2.7 -0.5 +/- 0.6; 0.6 -1.4_+/- 1.8; 1.8 Fe-59 -2.3 +/- 5.9; 5.9 0.3-+/- 5.8; 5.8 -0.9+/- 1.1; 1.1 -1.9_+/- 4.0; 4.0 Co-58 1.1+/- 3.1; 3.1 1.1 +/- 3.2; 3.2 0.6+/- 0.6; 0.6 1.2 +/- 1.5; 1.5 Co-60 -4.4 +/- 3.8; 3.9 1.0+/- 3.1; 3.1 0.6+/- 0.7; 0.7 1.6 +/- 2.0; 2.0 Zn-65 -1.8+/- 5.9; 5.9 -1.3_+/- 6.6; 6.6 0.2_+/- 1.4; 1.4 -0.2 +/- 4.2; 4.2 Zr/Nb-95 2.7 +/- 3.3; 3.3 -5.2-+/- 3.4; 3.5 -2.0 +/- 0.7; 0.7 -4.3 +/- 2.2; 2.2 Cs-134 0.3 +/- 3.5; 3.5 -0.8 +/- 3.9; 3.9 0.6_+/- 0.7; 0.7 -0.2+/- 2.0; 2.0 Cs- 137 -2.4 +/- 3.7; 3.7 0.6-+/- 3.0; 3.0 0.2_+/- 0.8; 0.8 -0.3 +/- 1.9; 1.9 Ba/La-140 -1.4_+/- 3.5; 3.5 1.6 +/- 3.7; 3.7 -7.8_+/-0.8; 1.4 1.8_+/- 2.2; 2.2 L-28 Marseilles Well Date Collected 01-11-01 04-12-01 07-12-01 10-11-01 Lab Code LWW-154 LWW-2774 LWW-6003 LWW-9131 H-3 79 +/- 92; 92 -11 +/- 79; 79 -4 +/- 73; 73 -53 +/- 74; 74 Mn-54 0.1_+1.1; 1.1 0.9_+/- 3.0; 3.0 0.2 0.8; 0.8 1.7_+/- 1.4; 1.4 Fe-59 -0.8++/- 2.3; 2.3 3.8_+/- 3.6; 3.6 -0.6+/- 1.4; 1.4 0.1 +/- 3.2; 3.2 Co-58 0.2+/- 1.1; 1.1 1.7 +/- 2.3; 2.4 -0.5 0.8; 0.8 -0.0 +/- 1.6; 1.6 Co-60 -0.9 +/- 1.0; 1.0 -1.7 +/- 3.2; 3.2 -0.6+/- 0.8; 0.8 2.1+/- 2.1; 2.1 Zn-65 -3.4 +/- 2.5; 2.6 -0.9 +/- 5.9; 5.9 -10.0+/- 2.1; 2.6 -1.0_+/- 3.2; 3.2 Zr/Nb-95 -0.9 +/- 1.2; 1.3 0.7_+/- 1.8; 1.8 -1.8+/- 1.7; 1.7 -0.2_+/- 1.6; 1.6 Cs-134 1.2_+/- 1.3; 1.3 0.2 +/- 2.0; 2.0 0.8+/- 0.9; 0.9 -0.2 +/- 1.7; 1.7 Cs-137 0.0_+/- 1.2; 1.2 -0.2_+/- 2.7; 2.7 0.1 +/- 0.9; 0.9 -1.7-+/- 1.8; 1.8 Ba/La-140 -3.5 +/- 1.4; 1.5 1.8+/- 3.1; 3.1 -2.9 1.0; 1.1 -3.1-+/- 1.7; 1.8 aSample not available on 01-11-01; collected during next collection period.

I1 -30

LASALLE MILCH ANIMALS, NEAREST LIVESTOCK, AND NEAREST RESIDENCES CENSUS 111-31

LASALLE MILCH ANIMALS CENSUS, 2001 L-42 Vince Biros Farm 12.6 miles, Sector E 25%pasture 25% ground grain 50% green chop Census conducted by A. Lewis on August 20, 2001 m-32

LASALLE NEAREST LIVESTOCK CENSUS, 2001 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 20,2001 111-33

LASALLE NEAREST RESIDENCE CENSUS, 2001 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 20, 2001 111-34

LASALLE 4.0 TLD DATA*

TLD Data provided by Exelon Nuclear.

111-35

Exelon Nuclear '

Environmental Site Report for LaSalle Gamma Radiation Measured in mR by TLDs Site Description Quarter 1 Quarter 2 Quarter 3 Quarter 4 2001 2001 2001 2001 I. INDICATOR LOCATIONS

a. Air Samplers L-01-1 NEARSITE NO. 1 19.0 22.0 18.0 20.0 L-01-2 NEARSITE NO. 1 19.0 22.0 18.0 24.0 L-03-1 ONSITE NO. 3 21.0 20.0 17.0 23.0 L-03-2 ONSITE NO. 3 20.0 22.0 17.0 23.0 L-04-1 RTE. 170 21.0 19.0 17.0 19.0 L-04-2 RTE. 170 18.0 23.0 17.0 18.0 L-05-1 ONSITE NO. 5 20.0 21.0 19.0 19.0 L-05-2 ONSITE NO. 5 19.0 24.0 18.0 21.0 L-06-1 NEARSITE NO. 6 20.0 26.0 19.0 19.0 L-06-2 NEARSITE NO. 6 20.0 22.0 18.0 20.0 L-07-1 SENECA 20.0 23.0 19.0 22.0 L-07-2 SENECA 19.0 24.0 20.0 22.0 L-08-1 MARSEILLES 19.0 23.0 20.0 22.0 L-08-2 MARSEILLES 21.0 21.0 17.0 22.0 L-11-1 RANSOM 20.0 21.0 15.0 21.0 L-11-2 RANSOM 18.0 18.0 19.0 20.0 Air Sampler Mean S. D. 19.6 +/-1.0 21.9 +/-2.0 18.0 +/-1.3 20.9 +/-1.7 Annual Air Sampler Mean +/- S.D. 20.1 +/-2.1

b. Inner Ring (100 Series)

L-101-1 23.0 22.0 21.0 19.0 L-101-2 20.0 22.0 20.0 23.0 L-1 02-1 21.0 24.0 24.0 27.0 L-102-2 21.0 23.0 20.0 25.0 L-103-1 19.0 20.0 21.0 23.0 L-103-2 22.0 21.0 21.0 24.0 L-104-1 20.0 21.0 21.0 20.0 L-104-2 19.0 21.0 18.0 24.0 L-105-1 22.0 23.0 25.0 23.0 L-105-2 20.0 23.0 24.0 22.0 L-106-1 19.0 21.0 22.0 23.0 L-106-2 19.0 22.0 21.0 23.0 L-107-1 20.0 22.0 23.0 24.0 L-107-2 19.0 21.0 19.0 23.0 L-108-1 20.0 22.0 18.0 20.0 L-108-2 18.0 19.0 18.0 21.0 L-109-1 19.0 22.0 22.0 23.0 L-109-2 21.0 22.0 21.0 23.0 L-110-1 19.0 21.0 19.0 24.0 L-1 10-2 19.0 21.0 18.0 24.0 L-111B-1 20.0 22.0 18.0 24.0 L-111B-2 20.0 22.0 18.0 21.0 111-36

Exelon Nuclear Environmental Site Report for LaSalle Gamma Radiation Measured in mR by TLDs Site Description Quarter 1 Quarter 2 Quarter 3 Quarter 4 2001 2001 2001 2001

b. Inner Ring (100 Series)

L-112-1 19.0 21.0 17.0 22.0 L-112-2 21.0 23.0 19.0 25.0 L-113A-1 21.0 22.0 19.0 21.0 L-113A-2 20.0 24.0 19.0 25.0 L-1 14-1 22.0 22.0 18.0 20.0 L-1 14-2 19.0 23.0 18.0 24.0 L-1 15-1 19.0 21.0 18.0 23.0 L-115-2 19.0 21.0 16.0 18.0 L-116-1 19.0 21.0 17.0 19.0 L-116-2 19.0 20.0 17.0 19.0 Inner Ring Mean +/- S.D. 19.9 +/-1.2 21.7 :1.1 19.7 +/-2.3 22.5 +/-2.1 Annual Inner Ring Mean +/- S.D. 21.0 +/-2.1

c. Outer Ring (200 Series)

L-201-3 20.0 18.0 15.0 17.0 L-201-4 14.0 23.0 18.0 21.0 L-202-3 21.0 21.0 16.0 18.0 L-202-4 18.0 19.0 16.0 17.0 L-203-1 19.0 21.0 18.0 22.0 L-203-2 20.0 21.0 17.0 19.0 L-204-1 19.0 23.0 22.0 21.0 L-204-2 19.0 23.0 18.0 24.0 L-205-1 20.0 22.0 18.0 22.0 L-205-2 19.0 23.0 18.0 21.0 L-205-3 20.0 22.0 18.0 25.0 L-205-4 19.0 22.0 17.0 23.0 L-206-1 18.0 23.0 17.0 24.0 L-206-2 19.0 23.0 20.0 24.0 L-207-1 20.0 23.0 18.0 21.0 L-207-2 21.0 22.0 18.0 20.0 L-208-1 19.0 23.0 19.0 26.0 L-208-2 21.0 25.0 19.0 28.0 L-209-1 20.0 24.0 20.0 24.0 L-209-2 19.0 21.0 18.0 22.0 L-21 0-1 21.0 25.0 23.0 27.0 L-210-2 21.0 NDa 22.0 23.0 L-21 1-1 20.0 25.0 21.0 23.0 L-211-2 21.0 22.0 18.0 22.0 L-212-1 23.0 22.0 21.0 21.0 L-212-2 20.0 22.0 21.0 24.0 L-213-3 19.0 22.0 21.0 21.0 L-213-4 19.0 21.0 17.0 19.0 L-214-3 20.0 23.0 23.0 25.0 L-214-4 19.0 23.0 18.0 22.0 a "ND" = No data; TLD found missing during quarterly exchange.

111-37

Exelon Nuclear Environmental Site Report for LaSalle Gamma Radiation Measured in mR by TLDs Site Description Quarter 1 Quarter 2 Quarter 3 Quarter 4 2001 2001 2001 2001 Outer Ring (200 Series) 20.0 25.0 22.0 26.0 L-215-3 21.0 23.0 19.0 23.0 L-215-4 20.0 21.0 19.0 15.0 L-216-3 20.0 17.0 18.0 17.0 L-216-4 19.7 +/-1.4 22.2 +/-1.8 18.9 +/-2.1 22.0 +/-3.0 Outer Ring Mean +/- S.D.

20.7 +/-2.6 Annual Outer Ring Mean +/- S.D.

19.8 +/-1.3 22.0 +/-1.6 19.0 +/-2.1 22.0 +/-2.5 INDICATOR LOCATION MEAN +/- S.D.

20.7 +/-2.3 Annual INDICATOR MEAN +/- S.D.

II. CONTROL LOCATIONS 17.0 22.0 18.0 17.0 L-10-1 STREATOR 17.0 21.0 18.0 20.0 L-10-2 STREATOR 17.0 +/-0.0 21.5 +/-0.7 18.0 +/-0.0 18.5 +/-2.1 CONTROL LOCATION MEAN +/- S.D.

18.8 +/-0.0 Annual CONTROL LOCATION MEAN +/- S.D.

111-38

LASALLE 5.0 GRAPHS OF DATA TRENDS III-39

Air Particulates - Gross Beta L-01 Nearsite No. 1 10.0 8.0 6.0 c-J M

U-4.0 2.0 0.0 4 1 i iI I i 12-31-96 12-31-97 12-31-98 12-31-99 12-30-00 12-30-01 Figure 1. Continuous collection with weekly exchange of particulate filter.

L-03 Onsite No. 3 10 8

6 U

4

'--4 2

0 I I i I 12-31-96 12-31-97 12-31-98 12-31-99 12-30-00 12-30-01 Figure 2. Continuous collection with weekly exchange of particulate filter.

111-40

Air Particulates - Gross Beta L-05 Onsite No. 5 10 8 No sample; power out 6

Uo 4

2 0i I I I 12-31-96 12-31-97 12-31-98 12-31-99 12-30-00 12-301-01 Figure 3. Continuous collection with weekly exchange of particulate filter.

L-06 Nearsite No. 6 10 8

No filter due to pump malfunction 6

Co 4

CD 2

0 1 I I 1 I 12-31-96 12-31-97 12-31-98 12-31-99 12-30-00 12-30-01 Figure 4. Continuous collection with weekly exchange of particulate filter.

111-41

Air Particulates - Gross Beta L-1O (C) Streator 10 8

6 U

1ý C,,

CI 4

2 0 1 Ii iI 12-31-96 12-31-97 12-31-98 12-31-99 12-30-00 12-30-01 Figure 5. Continuous collection with weekly exchange of particulate filter.

III-42

Surface Water - Gross Beta L-21 Illinois River at Seneca 10.0 8.0 6.0 4.0 2.0 0.0 1 12-31-96 12-31-97 12-31-98 12-31-99 12-30-00 12-30-01 Figure 6. Monthly composites of weekly collections.

L-40 Illinois River Downstream 10.0 8.0 6.0 4.0 2.0 0.0 .1 12-31-96 12-31-97 12-31-98 12-31-99 12-30-00 12-30-01 Figure 7. Monthly composites of weekly collections.

111-43

Surface Water-Tritium L-21(C) Illinois River at Seneca 700 600 500 400

-J O.)

300 200 100 -

- 1 12-31-96 12-31-97 12-31-98 12-31-99 12-30-00 12-30-01 Figure 8. Quarterly composites of weekly collections.

L-40 Illinois River Downstream 850 700 550 0 400 250 100-

.*t3 I I I 12-31-96 12-31-97 12-31-98 12-31-99 12-30-00 12-30-01 Figure 9. Quarterly composites of weekly collections.

111-44

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

300 t 200 +

0 -

100+

ot /-\/,-- \7"

-100

-200 12-31-96 12-31-97 12-31-98 12-31-99 12-30-00 12-30-01 Figure 11. Quarterly collections.

L-28 Marseilles Well 500 -

400+

300+/-

200 -

100 0

I K

-100

-200 I I I 12-31-96 12-31-97 12-31-98 12-31-99 12-30-00 12-30-01 Figure 11. Quarterly collections.

IHI-45

APPENDIX IV INTERLABORATORY COMPARISON PROGRAM RESULTS NOTE: Environmental Incorporated Midwest Laboratory participates in intercomparison studies administered by Environmental Resource Associates which serve as a replacement for studies previously conducted by the U.S. EPA Environmental Monitoring Systems Laboratory, Las Vegas, Nevada. The results are reported annually in Appendix IV. Also reported are results of mixed analyte and Environmental Measurements Laboratory performance evaluation programs.

January, 2001 through December, 2001

Appendix IV Interlaboratory Comparison Program Results Enviromental Incorporated Midwest Laboratory has participated in interlaboratory comparison (crosscheck) programs since the formulation of its quality control program in December 1971. These programs are operated by agencies which supply environmental type samples (e.g., milk or water) 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 the laboratory's analytical procedures and to alert it to 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.

The results in Table IV-1 were obtained through participation in the environmental sample crosscheck program for milk, water, air filters, and food samples through December 31, 2001. This program was conducted by Environmental Resource Associates and serves to replace studies formerly conducted by the U.S. Environmental Protection Agency Office of Research and Development, National Exposure Research Laboratory Characterization Research Division-Las Vegas, Nevada.

Table IV-2 lists results of the mixed analyte performance evaluation program.

Table IV-3 lists results of the Environmental Measurement Laboratory Quality Assessment Program.

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

comparison of ERA and Environmental, Inc. Midwest Laboratory results.'

Concentration in pCi/Lb Lab Sample Date Control Code Type Collected Analysis ERA Resultc Limits Laboratory resultsd STW-897 Water Jan, 2001 Gr. Alpha 45.7+/-11.4 25.9 - 65.5 31.9 +/- 2.1; 4.4 STW-897 Water Jan, 2001 Gr. Beta 16.7_+/-5.0 8.0-25.4 25.3 +/- 2.7; 4.7 STW-900 Water Feb, 2001 1-131 28.3 +/-3.0 23.1 -33.5 27.2 +/- 0.8; 2.8 STW-902 Water Feb, 2001 Ra-226 4.7+/-0.7 3.4-5.9 4.0_+/-0.1;0.4 STW-902 Water Feb, 2001 Ra-228 14.4 +/-3.6 8.2 - 20.6 13.8 +/- 0.4; 1.4 STW-902 Water Feb, 2001 Uranium 20.4 +/- 3.0 15.2-25.6 17.0_+/-0.3; 1.7 STW-903 Water Mar, 2001 H-3 17800.0 +/- 1780.0 14700.0 - 20900.0 17400.0 +/- 69.7; 2367.4 STW-917 Water Apr, 2001 Gr. Alpha 56.0 +/- 14.0 31.8 - 80.2 57.4 +/- 3.5; 7.8 STW-917 Water Apr, 2001 Ra-226 17.7_+/-2.7 13.1 - 22.3 13.5 +/- 0.4; 1.4 STW-917 Water Apr, 2001 Ra-228 8.1 +/-2.0 4.6-11.6 10.1 +/-_0.6;1.2 STW-917 Water Apr, 2001 Uranium 15.6 +/-3.0 10.4 - 20.8 14.2 +/- 0.2; 1.4 STW-918 Water Apr, 2001 Co-60 26.4 +/-5.0 17.7 - 35.1 27.9 +/- 1.4; 4.2 STW-918 Water Apr, 2001 Cs-134 16.9 +/-5.0 8.2-25.6 16.0 +/- 0.4; 2.3 STW-918 Water Apr, 2001 Cs-137 186.0 +/- 9.3 170.0 - 202.0 195.4 +/- 1.5; 28.2 STW-918 Water Apr, 2001 Gr. Beta 340.0 +/- 51.0 252.0 - 428.0 343.0 +/- 1.7;52.9 STW-918 Water Apr, 2001 Sr-89 64.1 +/-5.0 55.5 - 72.8 62.8 +/- 5.7; 8.5 STW-918 Water Apr, 2001 Sr-90 33.8 +/-5.0 25.1 - 42.5 34.2 +/- 1.6; 3.8 STW-919 Water Jun, 2001 Ba-133 36.0 +/-5.0 27.3 - 44.7 37.8 +/- 1.2; 5.6 STW-919 Water Jun, 2001 Co-60 46.8 +/-5.0 38.1 - 55.5 49.9 +/- 0.7; 7.2 STW-919 Water Jun, 2001 Cs-134 15.9 +/-5.0 7.2 - 24.6 16.0 _+1.4; 2.7 STW-919 Water Jun, 2001 Cs-137 197.0 +/- 9.9 180.0 - 214.0 208.0 +/- 1.7;30.0 STW-919 Water Jun, 2001 Zn-65 36.2 +/-5.0 27.5 - 44.9 37.8 +/- 0.7; 5.5 STW-920 Water Jun, 2001 Ra-226 15.4 +/- 2.3 11.4- 19.4 14.6 +/- 0.4; 1.5 STW-920 Water Jun, 2001 Ra-228 4.5 +/- 1.1 2.6-6.5 6.2 +/-0.2;0.7 STW-920 Water Jun, 2001 Uranium 55.7 +/-5.6 46.1 - 65.3 49.0 +/- 1.0; 5.0 vi - 1

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

comparison of ERA and Environmental, Inc. Midwest Laboratory results.!

Concentration in pCi/Lb Lab Sample Date Control Code Type Collected Analysis ERA Resultc Limits Laboratory resultsd 31.2" 5.0 22.5 - 39.9 19.8 +/- 1.5; 2.5 STW-921 Water Jul, 2001 Sr-89 Delay in processing may have attributed to deviation.

Result of reanalysis; Sr-89, 35.3 +/- 4.4 pCi/L. Sr-90, 25.0 +/- 2.8 pCi/L.

STW-921 Water Jul, 2001 Sr-90 25.9 +/-5.0 17.2 - 34.6 26.3 +/- 1.1; 2.9 Water Jul, 2001 Gr. Alpha 17.8 +/- 5.0 9.1 - 26.5 23.3 +/- 1.9; 3.4 STW-922 Water Jul, 2001 Gr. Beta 53.0 +/- 10.0 35.7 - 70.3 48.5 +/- 4.6; 8.8 STW-922 Water Aug, 2001 H-3 2730.0 +/- 356.0 2110.0 - 3350.0 2680.0 +/- 41.9; 366.9 STW-924 Water Sep, 2001 Ra-226 10.8 +/- 1.6 8.0 - 13.6 10.9 +/- 0.2; 1.1 STW-931 Sep, 2001 Ra-228 9.0 +/- 2.2 5.1 - 12.8 9.7 +/- 1.1; 1.5 STW-931 Water Sep, 2001 Uranium 13.1+/- 3.0 7.9 - 18.3 11.2_+/-_0.1;1.1 STW-931 Water Oct, 2001 1-131 7.7 +/- 2.0 4.2 - 11.2 7.7 +/- 0.3; 0.8 STW-932 Water Water Oct, 2001 Gr. Alpha 97.5 +/- 24.4 55.3 - 140.0 82.2 +/- 4.0; 10.8 STW-933 Oct, 2001 Ra-226 10.8 +/- 1.6 8.0 - 13.6 9.5+/- 1.2;1.5 STW-933 Water Water Oct, 2001 Ra-228 15.6 +/-3.9 8.9 - 22.4 17.0 +/- 0.8; 1.9 STW-933 Uranium 37.2 +/-3.7 30.7- 43.6 32.2 +/- 1.4; 3.5 STW-933 Water Oct, 2001 Water Oct, 2001 Co-60 78.4 +/-5.0 69.7 - 87.1 82.4 +/- 0.9; 11.9 STW-934 Water Oct, 2001 Cs-134 54.1 +/-5.0 45.4 - 62.8 52.2 +/- 1.3; 7.6 STW-934 Oct, 2001 Cs-137 37.9 +/- 5.0 26.3 - 43.7 39.4 +/- 0.6; 5.7 STW-934 Water Water Oct, 2001 Gr. Beta 192.0 +/- 28.8 142.0 - 242.0 166.0 +/- 7.1 ;26.5 STW-934 Water Oct, 2001 Sr-89 16.7_+/-5.0 8.0 - 25.4 12.8 +/- 0.8; 1.5 STW-934 Water Oct, 2001 Sr-90 7.7 +/-5.0 -1.0 - 16.4 6.8 +/- 0.7; 0.9 STW-934 Water Oct, 2001 Gr. Alpha 64.0 +/- 16.0 36.5 - 91.5 63.5 +/- 2.5; 8.1 STW-935 Gr. Beta 21.5 +/-5.0 12.8 - 30.2 26.0+/- 1.2;4.2 STW-935 Water Oct, 2001 Water Nov, 2001 Ba-133 69.3 +/- 6.9 57.5 - 81.1 66.7 +/- 1.2; 9.7 STW-938 Water Nov, 2001 Co-60 59.7+/-_5.0 51.0 - 68.4 59.3 +/- 0.6; 8.6 STW-938 Water Nov, 2001 Cs-134 93.9 +/-5.0 85.2 - 103.0 86.7_+/- 1.5; 12.6 STW-938 Nov, 2001 Cs-137 42.0 +/- 5.0 33.3 - 50.7 45.0 +/- 1.0; 6.6 STW-938 Water IV1 -2

Table W-1. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA),

comparison of ERA and Environmental, Inc. Midwest Laboratory results.'

Concentration in pCi/Lb Lab Sample Date Control Code Type Collected Analysis ERA Result' Limits Laboratory results' STW-938 Water Nov, 2001 Zn-65 77.3+/- 7.7 63.9 -90.7 80.7_t 0.6; 11.6

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

b All results are in pCi/L, except for elemental potassium (K) data in milk, which are in mg/L; air filter samples, which are in pCi/Filter.

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

dUnless otherwise indicated, the result is given as the mean +/- standard deviation for three determinations. The number after the semi-colon reflect Total Propagated Uncertainty for the result.

IV1-3

Table IV-2. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP)'.

Concentration in Bq/kgb Lab Sample Date MAPEP Result' Control Laboratory results Code Type Collected Analysis Is, N=1 Limits _Standard Deviation' STSO-923 SOIL Jan, 2001 Am-241 0.0 - 2.6 Included in the testing series as a "false positive". No activity expected. Result of analysis; < 0.8 Bq/L.

STSO-923 SOIL Jan, 2001 Co-57 103.0+/-10.3 72.1-133.9 100.2 +/- 3.5; 10.6 STSO-923 SOIL Jan, 2001 Co-60 1,270.0+/-127.0 889.0 - 1,651.0 1,285.1 +/-5.3;128.6 STSO-923 SOIL Jan, 2001 Cs-134 91.1 +/-9.1 63.8- 118.4 81.1 +/- 1.8; 8.3 STSO-923 SOIL Jan, 2001 Cs-137 1,240.0 +/-124.0 868.0 - 1,612.0 1,210.6 +/- 6.6; 121.2 STSO-923 SOIL Jan, 2001 K-40 652.0 +/- 65.2 456.4 - 847.6 732.6 +/- 21.2; 76.3 STSO-923 SOIL Jan, 2001 Mn-54 203.0 +/-20.3 142.1 - 263.9 212.6 +/- 6.7; 22.3 STSO-923 SOIL Jan, 2001 Pu-238 115.0+/- 11.5 80.5-149.5 110.7_+/- 7.2; 13.2 STSO-923 SOIL Jan, 2001 Pu-239/40 83.4 +/-8.3 58.4 - 108.4 79.6 +/- 5.9; 9.9 STSO-923 SOIL Jan, 2001 Sr-90 209.0 +/-20.9 146.3 - 271.7 159.8 +/- 9.5; 18.6 STSO-923 SOIL Jan, 2001 U-233/4 60.0 +/- 6.0 42.0 - 78.0 45.0 +/-3.9;6.0 STSO-923 SOIL Jan, 2001 U-238 191.0+/-19.1 133.7 - 248.3 165.6 +/- 7.4; 18.1 STSO-923 SOIL Jan, 2001 Zn-65 382.0 +/- 38.2 267.4 - 496.6 428.5 +/- 10.9; 44.2 SResults 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.

'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 (1 sigma, 1 determination) and control limits as defined by the MAPEP.

IV2 - 1

Table IV-3. Environmental Measurements Laboratory Quality Assessment Program (EML)'.

Concentration in Bq/Lb Lab Sample Date Control Code Type Collected Analysis Laboratory Result' EML Resultd Limits' STSO-904 Soil Mar, 2001 Ac-228 45.6+/-4.0; 6.1 42.7+/-1.7 0.8 - 1.5 Mar, 2001 Am-241 14.4 +/- 0.5; 1.5 14.8 +/- 0.5 0.6 - 2.6 STSO-904 Soil 53.2+/---+3.1; 6.2 42.0 +/-4.1 0.5 - 1.2 STSO-904 Soil Mar, 2001 Bi-212 Naturally-occurring radium and thorium daughters are present in the shield background, and a probable cause of the higher bias seen for isotopes of lead and bismuth.

Soil Mar, 2001 Bi-214 42.1 +/- 7.7; 8.8 32.6+/- 1.4 0.8-1.5 STSO-904 Soil Mar, 2001 Cs-137 1,772.6 +/- 79.8; 194.4 1,740.0 +/- 90.0 0.8-1.3 STSO-904 Soil Mar, 2001 K-40 583.8 +/- 52.6; 78.6 468.0 +/- 25.0 0.8-1.4 STSO-904 Soil Mar, 2001 Pb-212 46.6 +/- 8.5; 9.7 41.5 +/-2.2 0.7 - 1.4 STSO-904 Soil Mar, 2001 Pb-214 45.3 +/- 8.6; 9.7 34.3 +/- 1.6 0.8 - 1.5 STSO-904 Soil Mar, 2001 Pu-239/40 26.0 +/- 0.8; 2.7 25.6 +/- 0.7 0.7-1.3 STSO-904 Soil Mar, 2001 Sr-90 55.6 +/- 2.2; 6.0 69.0 +/-5.7 0.6-3.9 STSO-904 Water Mar, 2001 Am-241 2.2 +/-_0.1; 0.3 1.7_+/-0.1 0.8- 1.5 STW-905 Water Mar, 2001 Co-60 97.0 +/- 0.8; 14.0 98.2 +/-3.6 0.8 - 1.2 STW-905 Water Mar, 2001 Cs-137 70.1 +/-_4.0; 10.9 73.0 +/-3.7 0.8-1.2 STW-905 Water Mar, 2001 H-3 76.5 +/- 5.5; 11.8 79.3 +/-2.0 0.7-2.3 STW-905 1.7+/- 0.1; 0.2 1.6 +/-_0.1 0.7-1.2 STW-905 Water Mar, 2001 Pu-238 Water Mar, 2001 Pu-239/40 1.7+/- 0.1; 0.2 1.6_+/-0.1 0.8 - 1.3 STW-905 Mar, 2001 Sr-90 3.9 +/-0.1; 0.4 4.4 +/- 0.2 0.6-1.5 STW-905 Water Water Mar, 2001 U-233/4 0.9 +/-0.1; 0.1 1.0 +/- 0.1 0.8 - 1.4 STW-905 Water Mar, 2001 U-238 0.9 +/-0.1; 0.1 1.0 +/- 0.0 0.8-1.3 STW-905 Water Mar, 2001 Gr. Alpha 1,724.6 +/- 141.7; 253.7 1,900.0 +/- 190.0 0.6-1.3 STW-906 Water Mar, 2001 Gr. Beta 1,246.4+/-31.1; 194.4 1,297.0 +/- 100.0 0.6-1.5 STW-906 Air Filter Mar, 2001 Am-241 0.5 +/- 0.0; 0.1 0.5 +/-0.0 0.7 - 2.4 STAP-907 Mar, 2001 Co-60 20.1 +/- 0.2; 2.0 19.4_+/-0.5 0.8 - 1.3 STAP-907 Air Filter Air Filter Mar, 2001 Cs-134 2.7 +/- 0.2; 0.3 2.8 +/- 0.2 0.7-1.2 STAP-907 Air Filter Mar, 2001 Cs-137 9.9 +/- 0.2; 1.0 8.8 +/- 0.3 0.8 - 1.4 STAP-907 Air Filter Mar, 2001 Mn-54 7.3 +/- 0.2; 0.8 6.5 +/- 0.3 0.8 - 1.4 STAP-907 Air Filter Mar, 2001 Pu-238 0.2 +/- 0.0; 0.0 0.2 +/- 0.0 0.7-1.4 STAP-907 Air Filter Mar, 2001 Pu-239/40 0.1 +/- 0.0; 0.0 0.1 +/-0.0 0.7 - 1.3 STAP-907 Mar, 2001 Sr-90 7.4 +/- 0.2; 0.8 7.1 +/-0.2 0.6-2.1 STAP-907 Air Filter Mar, 2001 U-233/4 0.1 +/- 0.0; 0.0 0.0 +/-0.0 0.8 - 1.9 STAP-907 Air Filter Air Filter Mar, 2001 U-238 0.1 +/- 0.0; 0.0 0.0 +/- 0.0 0.8 - 1.6 STAP-907 Air Filter Mar, 2001 Gr. Alpha 2.7 +/- 0.0; 0.3 4.0 +/-0.3 0.6-1.5 STAP-908 Air Filter Mar, 2001 Gr. Beta 2.3 +/- 0.0; 0.2 2.6+/-0.2 0.8-1.5 STAP-908 IV3 - 1

Table IV-3. Environmental Measurements Laboratory Quality Assessment Program (EML)'.

Concentration in Bq/Lb Lab Sample Date Control Code Type Collected Analysis Laboratory Result' EML Resultd Limits' STVE-909 Vegetation Mar, 2001 Am-241 6.1 +/- 0.2; 0.6 6.2 +/- 0.3 0.7 - 2.3 STVE-909 Vegetation Mar, 2001 Cm-244 3.5 +/- 0.5; 0.6 3.7-+/--0.3 0.6 - 1.6 STVE-909 Vegetation Mar, 2001 Co-60 28.5 +/- 2.1; 4.4 30.4 +/- 1.2 0.8 - 1.5 Vegetation Mar, 2001 Cs-137 795.5 +/- 76.4; 132.4 842.0 +/- 42.0 0.8 - 1.4 STVE-909 STVE-909 Vegetation Mar, 2001 K-40 592.6+/- 42.5; 72.9 603.0 +/- 32.0 0.8 - 1.4 STVE-909 Vegetation Mar, 2001 Pu-239/40 8.5 +/- 0.6; 1.0 9.6 +/- 1.3 0.7-1.5 Vegetation Mar, 2001 Sr-90 1,239.6 +/- 130.0; 179.6 1,330.0 +/- 70.0 0.5-1.2 STVE-909 STW-925 Water Sep, 2001 Am-241 0.7-+/--0.1; 0.1 0.8 +/-0.0 0.8-1.5 STW-925 Water Sep, 2001 Co-60 206.7-+/--4.7; 30.1 209.0 +/- 7.6 0.8 - 1.2 STW-925 Water Sep, 2001 Cs-137 46.6 +/- 0.8; 6.8 45.1 +/-2.5 0.8 - 1.2 Water Sep, 2001 H-3 254.1 +/- 3.6; 34.7 207.0 +/- 2.7 0.7-2.3 STW-925 Water Sep, 2001 Ni-63 50.9 +/- 3.0; 5.9 45.3 +/- 4.5 0.7-1.3 STW-925 Water Sep, 2001 Pu-238 1.1-+/--0.1; 0.1 1.1+/-0.1 0.7-1.2 STW-925 Water Sep, 2001 Pu-239/40 1.6 +/- 0.1; 0.2 1.6 +/- 0.1 0.8 - 1.3 STW-925 Water Sep, 2001 Sr-90 4.1 +/- 0.3; 0.5 3.7 +/-0.4 0.6- 1.5 STW-925 Water Sep, 2001 Uranium 2.2 +/- 0.2; 0.3 2.4 +/- 0.1 0.7- 1.4 STW-925 Water Sep, 2001 Gr. Alpha 1,220.0 +/- 32.0; 152.2 1,150.0 +/- 115.0 0.6 - 1.3 STW-926 Water Sep, 2001 Gr. Beta 8,461.0 +/- 206.0; 1,319.2 7,970.0 +/- 800.0 0.6 - 1.5 STW-926 STSO-927 Soil Sep, 2001 Ac-228 68.1 +/- 1.4; 7.0 59.6+/- 2.1 0.8 - 1.5 Soil Sep, 2001 Am-241 5.2 +/- 1.3; 1.4 4.4 +/- 0.3 0.6-2.6 STSO-927 Soil Sep, 2001 Bi-212 65.1 +/- 1.6; 6.7 62.1 +/-5.2 0.5 - 1.2 STSO-927 Soil Sep, 2001 Bi-214 47.3 +/- 4.7; 6.7 36.9 +/- 1.5 0.8 - 1.5 STSO-927 STSO-927 Soil Sep, 2001 Cs-137 659.2-+/- 10.8; 66.8 612.3 +/- 30.6 0.8-1.3 STSO-927 Soil Sep, 2001 K-40 737.7-+/- 16.6; 75.6 623.3 +/- 33.0 0.8-1.4 STSO-927 Soil Sep, 2001 Pb-212 64.7-+/-3.8; 7.5 58.3 +/- 3.1 0.7-1.4 STSO-927 Soil Sep, 2001 Pb-214 53.7_+/- 7.7; 9.4 39.7 +/- 1.7 0.8-1.5 Soil Sep, 2001 Pu-239/40 9.3 +/- 2.9; 3.0 8.9 +/- 0.3 0.7-1.3 STSO-927 Soil Sep, 2001 Sr-90 27.4+/- 6.3; 6.9 30.6+/- 1.1 0.6 - 3.9 STSO-927 Soil Sep, 2001 Uranium 155.6 +/- 7.8; 17.4 194.2 +/-3.8 0.6 - 1.4 STSO-927 STVE-928 Vegetation Sep, 2001 Am-241 7.0 +/- 0.3; 0.8 6.9 +/- 0.4 0.7-2.3 Vegetation Sep, 2001 Cm-244 4.3 +/- 0.8; 0.9 4.3 +/- 1.0 0.6-1.6 STVE-928 Vegetation Sep, 2001 Co-60 40.2 +/- 0.9; 5.5 35.3 +/- 1.4 0.8-1.5 STVE-928 Vegetation Sep, 2001 Cs-137 1,184.0 +/- 2.8; 161.0 1,030.0 +/- 51.8 0.8-1.4 STVE-928 Vegetation Sep, 2001 K-40 1,023.0 +/--44.1; 111.4 898.7 +/- 48.2 0.8 - 1.4 STVE-928 Vegetation Sep, 2001 Pu-239/40 8.9 +/- 1.4; 1.7 11.0 +/- 0.4 0.7 - 1.5 STVE-928 IV3 - 2

Table IV-3. Environmental Measurements Laboratory Quality Assessment Program (EML).

Concentration in Bq/Lb Lab Sample Date Control Code Type Collected Analysis Laboratory Resultc EML Resultd Limits' STVE-928 Vegetation Sep, 2001 Sr-90 1,364.0 +/- 18.4; 137.6 1,612.8 +/-_48.6 0.5 - 1.2 STAP-929 Air Filter Sep, 2001 Am-241 0.1 +/- 30.0; 30.0 0.1 +/-0.0 0.7- 2.4 STAP-929 Air Filter Sep, 2001 Co-60 16.9_+/-0.3; 1.7 17.5 +/-0.5 0.8- 1.3 STAP-929 Air Filter Sep, 2001 Cs-134 11.8 +/- 0.2; 1.2 13.0_+/-0.4 0.7 - 1.2 STAP-929 Air Filter Sep, 2001 Cs-137 18.3 +/- 0.3; 1.9 17.1 +/-0.6 0.8- 1.4 STAP-929 Air Filter Sep, 2001 Mn-54 85.4 +/- 1.3; 8.6 81.2 +/-4.8 0.8 - 1.4 STAP-929 Air Filter Sep, 2001 Pu-238 0.1 +/- 0.0; 0.0 0.1 +/-0.0 0.7 - 1.4 STAP-929 Air Filter Sep, 2001 Pu-239/40 0.2 +/- 0.0; 0.0 0.2 +/- 0.0 0.7 - 1.3 STAP-929 Air Filter Sep, 2001 Sr-90 3.1 +/- 0.1; 0.3 3.5 +/-0.2 0.6 - 2.1 STAP-929 Air Filter Sep, 2001 Uranium 0.2+/- 0.1; 0.1 0.2+/-0.0 0.8 -2.5 STAP-930 Air Filter Sep, 2001 Gr. Alpha 6.3 +/- 0.1; 0.6 5.4+/-0.5 0.6-1.5 STAP-930 Air Filter Sep, 2001 Gr. Beta 13.8 +/- 0.1; 1.4 12.8 +/-1.3 0.8- 1.5 SThe Environmental Measurements Laboratory provides the following nuclear species Air Filters, Soil, Vegetation and Water.

' Results are reported in Bq/L with the following exceptions: Air Filter results are reported in Bq/Filter, Soil results are reported in Bq/Kg, Vegetation results are reported in Bq/Kg.

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

'The control limits are reported by EML as the ratio of Reported Value / EML value and are established from percentiles of historic data distributions (1982-1992). The evaluation of this historic data and the development of the control limits is presented in DOE report EML-564.

IV3 - 3

LASALLE APPENDIX V ERRATA DATA V-i

From previous LaSalle Radiological Environmental Operating Reports:

Figure 5.0 Inner Ring TLD Locations Administrative error:

TLD designator 113-1 becomes 112-1 TLD designator 113-2 becomes 112-2 (see attached for an example of the mark-up pages)

Figure 5.0 Outer Ring TLD Locations Administrative error:

TLD designator 213-3 becomes 214-3.

(see attached for an example of the mark-up pages)

Table 5.0 Radiological Environmental Monitoring Program, Sampling Locations Administrative error:

Air Sampler Location for L-04 becomes Far Field No. 4 V-2

Figure 5.0-1 I. . IA 1*

@1 .a 18 U tJmu I-LASALLIE COUNTY STATION fl4NER RT TLD LC MOATIO14S Correcteddesignators:

112-2 112-1 V-3

Figure 5.0-2 21540 21543.

21$.40 2134.a a 21141 Grind RUIdg .8211-2 uHa Corre'cteddesignator:

214-3 Banemm ccnme K~ma U. * .1?. ImAIII4i 2 . Obtla #%A ujujw;wsi

. .. a vutmj Unnew in %M-Ifv 7L'D LOCaIUM LASALU CoUnTY STATION aUraRPVG1WLWCA'n V-4

ML021500487

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