ML050670477

Boiling Water Reactor Annual Radioactive Effluent Report and Radiological Environmental Monitoring Report for 2004

ML050670477
Person / Time
Site:	La Crosse File:Dairyland Power Cooperative icon.png
Issue date:	02/28/2005
From:	Berg W Dairyland Power Cooperative
To:	Document Control Desk, NRC/FSME
References
LAC-13864
Download: ML050670477 (52)

Text

II DAIRYLAND AVE. SO. P.O. BOX 817

• LA CROSSE, WISCONSIN 54602-0817 OFFICE (608) 787-1258 WILLIAM L. BERG FAX (608) 787-1469 President and CEO WEB SITE: www.dairynet.com February 28, 2005 In reply, please refer to LAC-13864 DOCKET NO. 50-409 Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555

SUBJECT:

Dairyland Power Cooperative La Crosse Boiling Water Reactor Possession-Only License No. DPR-45 Annual Radioactive Effluent Report and Radiological Environmental Monitoring Report

REFERENCES:

(1) NRC Letter, Keppler to Linder, dated August 12, 1983, Inspection Report 50-409/83-10 (DRMSP)

(2) LACBWR Technical Specifications 6.4.2, 6.5.1.1.c & d In accordance with 10 CFR 50.36a(a)(2), this letter serves to transmit to you the Radioactive Effluent Report and Radiological Environmental Monitoring Report for the La Crosse Boiling Water Reactor (LACBWR) for 2004.

If you have any questions, please contact us.

Sincerely, DAIRYLAND POWER COOPERATIVE William L. Berg, President & CEO WLB:LLN:tmo Enclosures cc/enc: Peter Lee, Ph.D., NRC Reg. III, Decommissioning Branch iJ:Cq Kristina Banovac, NRC Project Manager Don Hendrikse, Wisc. Div. of Health A Touchstone Energy Cooperative 7I*

RADIOACTIVE EFFLUENT REPORT AND RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT FOR THE LA CROSSE BOILING WATER REACTOR (LACBWR)

(January 1 to December 31, 2004)

DAIRYLAND POWER COOPERATIVE 3200 EAST AVENUE SOUTH LA CROSSE WI 54602-0817

TABLE OF CONTENTS SECTION A: RADIOACTIVE EFFLUENT REPORT Section Title Page Introduction....................................................................................... .1 1.0 Regulatory Limits. 2 2.0 Effluent Release Concentration Limit. 4 3.0 Average Energy. 4 4.0 Analytical Methods. 4 5.0 Batch Releases. 6 6.0 Abnormal Releases. 6 7.0 Estimated Total Analytical Error. 6 8.0 Offsite Dose Calculation Summary and Conclusions .12 9.0 Offsite Dose Calculation Manual (ODCM) Review .13 10.0 Process Control Program (PCP) Review .13 SECTION B: RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT Section Title EPaqe Introduction ....................... 1 1.0 Sample Collection ................................................. 2 2.0 Results of the 2004 Radio-Environmental Monitoring Survey .......... 2 3.0 Conclusions ................................................. 4 4.0 Interlaboratory Comparison Program Results .................................. 5 i

TABLE OF CONTENTS TABLES SECTION A: RADIOACTIVE EFFLUENT REPORT Table No. Title Paqe 1A Effluent and Waste Disposal - Gaseous Effluents Summation of All Releases ........................ ........................ 7 1B Effluent and Waste Disposal - Gaseous Effluents Elevated Release ................................................ 8 2A Effluent and Waste Disposal - Liquid Effluents Summation of All Releases. 9 26 Effluent and Waste Disposal - Liquid Effluents .10 3 Effluent and Waste Disposal Annual Report - 2004 Solid Waste and Irradiated Fuel Shipments ................................................ 11 SECTION B: RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT Table No. Title Paqe 5 Sample Frequency and Analysis of Radio Environmental Samples. 10 6 Permanent Environmental Monitoring Station Locations .11 7 Environmental TLD Locations .12 8 Radio-Environmental Samples Collected January-December 2004. 13 9 Quarterly Thermoluminescent Dosimeter Dose Measurements in the LACBWR Vicinity .14 10 Weekly Gross Beta Air Particulates in the LACBWR Vicinity .15 11 Air Particulate Composite Results .18 12 Results of Analysis of Mississippi River Water in the Vicinity of LACBWR ................................................ 24 13 Results of Analysis of Mississippi River Sediment in the Vicinity of LACBWR .30 14 Fish Sample Activity in the Vicinity of LACBWR .31 ii

TABLE OF CONTENTS FIGURES No. Title Page FIGURE 1 LACBWR Property Map ........................................................... 6 FIGURE 2 Permanent Environmental Monitoring Station Location............ 7 FIGURE 3 LACBWR Environmental Dose Assessment Locations............ 8 FIGURE 4 LACBWR Environmental Dose Assessment Locations........... 9 iii

SECTION A RADIOACTIVE EFFLUENT REPORT I

INTRODUCTION:

The La Crosse Boiling Water Reactor (LACBWR), also known as Genoa Station No. 2, is located on the east bank of the Mississippi River near Genoa, Vernon County, Wisconsin. The plant was designed and constructed by the Allis-Chalmers Manufacturing Company. It was completed in 1967 and had a generation capacity of 50 MW (165 MW(th)). The reactor is owned by Dairyland Power Cooperative (DPC).

The reactor went critical in July 1967 and first contributed electricity to DPC's system in April 1968. After completing full power tests in August 1969, the plant operated between 60% and 100% full power, with the exception of plant shutdowns for maintenance and repair.

In April of 1987 plant operation was ceased. The reactor is presently defueled and in a SAFSTOR mode. In August of 1987 a possession-only license was received.

In accordance with LACBWR Technical Specifications 6.5.1. 1.d and in compliance with 10 CFR 50.36a(a)(2), this document is the Radioactive Effluent Report for the period January 1 through December 31, 2004.

1

EFFLUENT AND WASTE DISPOSAL REPORT (Supplemental Information)

FACILITY: -La Crosse Boiling Water Reactor LICENSEE: Dairyland Power Cooperative DOCKET NO. 50-409 1.0 REGULATORY LIMITS

a. Gaseous Effluent Release Limits:

LACBWR's stack effluent release limitations for gaseous effluent releases of radioactive material limits the release rate of the sum of the individual radionuclides, so that the dose rates to members of the public beyond the Effluent Release Boundary do not exceed 500 mRem/year to the whole body, 3000 mRem/year to the skin from noble gases, and 1500 mRem/year to a critical organ from H-3 and particulates with half-lives greater than 8 days as per the requirements of the Offsite Dose Calculation Manual (ODCM).

Also, in accordance with 10 CFR 50, Appendix I, the ODCM limitations for gaseous effluent radioactive material limit the air dose to a member of the public from noble gases in areas beyond the Effluent Release Boundary to less than 5 mRad gamma and 10 mRad beta per calendar quarter, and less than 10 mRad gamma and 20 mRad beta per calendar year. The dose limits from H-3 and particulates with half-lives greater than 8 days are less than 7.5 mRem per calendar quarter, and less than 15 mRem per calendar year to any organ.

Cumulative dose contributions from gaseous effluent releases are determined in accordance with the LACBWR Offsite Dose Calculations Manual.

2

EFFLUENT AND WASTE DISPOSAL REPORT - (cont'd)

b. Liquid Effluent Release Limits:

LACBWR's liquid effluent release limitations for liquid effluent releases are those concentrations specified in 10 CFR 20 Appendix B, Table 2, Column 2.

For alpha emitting radionuclides, the concentration is limited to a total activity concentration of 4.9E-9 pCi/ml, based upon an actual alpha emitting radionuclide analysis performed on a representative water sample. The values reported in tables 2A and 2B, Liquid Effluents, are based on dilution with the combination of LACBWR and Genoa Station No. 3 condenser cooling water flow prior to discharge to the Mississippi River. No credit is taken for further dilution in the mixing zone of the Mississippi River.

Also, in accordance with 10 CFR 50, Appendix I, the dose commitment to a member of the public from radioactive materials released in liquid effluents to areas beyond the Effluent Release Boundary are limited to less than 1.5 mRem whole body and 5.0 mRem organ dose per calendar quarter, and less than 3.0 mRem whole body and 10 mRem organ dose per calendar year via the critical ingestion pathway.

Cumulative quarterly and annual dose contributions from liquid effluent releases are determined for the adult fish ingestion pathway in accordance with the LACBWR Offsite Dose Calculation Manual.

c. Solid Radioactive Waste All solid radioactive wastes are handled in accordance with a Process Control Program as defined by LACBWR procedures in order to assure that all applicable transportation and burial site disposal requirements are met.

3

EFFLUENT AND WASTE DISPOSAL REPORT - (cont'd) 2.0 EFFLUENT RELEASE CONCENTRATION LIMIT The Effluent Release Concentration used to calculate permissible release rates are obtained from 10 CFR 20, Appendix B, Table 2, Column 2.

3.0 AVERAGE ENERGY The release rate limits for LACBWR are not based on average energy.

4.0 ANALYTICAL METHODS

a. Liquid Effluents Liquid effluent measurements for gross radioactivity are performed by HPGe gamma isotopic analysis of a representative sample from each tank discharged. In addition, each batch discharged tank is analyzed for alpha and tritium activity concentration. A composite sample is created by collecting representative aliquots from each tank batch discharged during a calendar quarter. This composite is analyzed for Iron-55 and Strontium-90 by a contractor on a quarterly basis.

b. Airborne Particulates Airborne particulate releases are determined by HPGe gamma isotopic analysis. This analysis is performed by analyzing a glass fiber filter paper taken from the stack monitor which continuously isokinetically samples and monitors the stack effluent. This filter is changed and analyzed on an approximate weekly basis and analyzed within 7 days after removal. This filter is also analyzed for alpha activity. A quarterly composite of these filters is sent to a contractor for Sr-90 analysis.

4

EFFLUENT AND WASTE DISPOSAL REPORT - (cont'd)

c. Radiolodines Since the plant shutdown in April 1987, the 1-131/1-133 have decayed completely to stable elements. Amendment 66 to the LACBWR Technical Specifications, deleted the requirement for monitoring for iodine.

d. Fission and Activation Gases The concentration of radioactivity (pCi/cc) in gaseous releases from the stack is continuously monitored by two in line stack monitors. These gas concentrations (pCi/cc) are corrected for pressure loss in the sampling system and averaged by the monitors microprocessor. The results are used along with the stack flow rate to obtain the daily gaseous release from the plant. Since the plant shutdown in April 1987, gaseous releases have been immeasurable. All fission gases except Kr-85 have decayed to stable elements.

e. Tritium Tritium releases are determined by taking a grab sample of the stack atmosphere at the effluent of the stack monitor. Tritium, as tritiated water, is removed from the sample stream by condensation, using a cold trap. The condensed water vapor is then distilled and the distillate is analyzed for H-3 concentration (pCi/cc), by internal liquid scintillation spectrophotometry and the results are expressed in terms of tritium release rates. The tritium grab samples are obtained on at least a once/month basis unless the upper reactor cavity is flooded, at which time the sampling frequency is increased to at least once per 7 days.

5

EFFLUENT AND WASTE DISPOSAL REPORT - (cont'd) 5.0 BATCH RELEASES

a. Airborne All airborne effluent releases at LACBWR are from a single Continuous-Elevated Release Point.

b. Liquid All liquid effluent releases at LACBWR are batch releases. This is summarized as follows:

(1) Number of Batch Releases: 8 - -

(2) Total Time Period for Batch Releases: 136.75 hours8.680556e-4 days <br />0.0208 hours <br />1.240079e-4 weeks <br />2.85375e-5 months <br /> (3) Maximum Time Period for a Batch Release: 32.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> (4) Average Time Period for a Batch Release: 17.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> (5) Minimum Time Period for a Batch Release: 10.4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> (6) Average Stream Flow Rate During Periods of Release of Effluent into a Flowing Stream: 64700 ft 3 /sec 6.0 ABNORMAL RELEASES There were no abnormal releases of radioactivity in plant effluents.

7.0 ESTIMATED TOTAL ANALYTICAL ERROR The reported analytical results contain the following estimated errors:

Counting Error 95% Confidence Level Sampling Volume Error i 5%.

6

EFFLUENT AND WASTE DISPOSAL REPORT - (cont'd)

TABLE 1A EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES I UNIT QTR QTR QTR QTR TOTAL A. FISSION & ACTIVATION GASES

1. TOTAL RELEASE Ci 0.00E+00 0.OOE+00 O.OOE+00 O.00E+00 0.00E+00

2. AVERAGE RELEASE RATE FOR pCV 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 PERIOD Sec B. IODINE 1-131 - No longer analyzed for.

C. PARTICULATESC

1. PARTICULATES WITH HALF- Ci 8.36E-07 6.21 E-07 6.87E-07 3.87E-07 2.53E-06 LIVES> 8 DAYS

2. AVERAGE RELEASE RATE FOR pCV 1.08E-07 7.90E-08 8.64E-08 4.87E-08 PERIOD Sec

3. GROSS ALPHA RADIOACTIVITY Ci 8.48E-08 0.OOE+00 3.OOE-08 O.OOE+00 1.1 5E-07 D. TRITIUM

1. TOTAL RELEASE Ci 1.37E-02 6.07E-03 7.59E-03 4.98E-03 3.23E-02

2. AVERAGE RELEASE RATE FOR pCV 1.76E-03 7.72E-04 9.55E-04 6.27E-4 PERIOD Sec E. PERCENTAGE OF ODCM DOSE LIMITS FOR GASEOUS EFFLUENT RELEASES I QTR QTR QTR QTR YEARLY

1. NOBLE GAS RELEASE

= GAMMA  % 0.OOE+00 0.OOE+00 0.00E+00 0.OOE+00 0.OOE+00 BETA  % O.OOE+00 0.OOE+00 O.OOE+00 O.OOE+00 0.OOE+00

2. H-3 AND ALL RADIONUCLIDES IN PARTICULATE FORM WITH HALF-LIVES GREATER THAN 8

_ DAYS

= GAMMA (Highest Organ) I % l9.45E-05 l5.11 E-05 16.825-05 l4.09E-05 1.27E-04 7

EFFLUENT AND WASTE DISPOSAL REPORT - (contd)

TABLE 1B EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 GASEOUS EFFLUENTS - ELEVATED RELEASE ICONTINUOS MODE UNIT QTR QTR QTR QTR TOTAL NUC LIDES RELEASED

1. FISSION GASES KRYPTON-85 Ci O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 TOTAL FOR PERIOD Ci O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00

2. IODINE 1-131 - Analysis no longer required.

3. PARTICULATES i _ _ _____

= STRONTIUM-90 Ci 0 0 0 0 0 CESIUM-134 Ci 0 0 0 0 0 CESIUM-137 Ci 2.38E-7 2.83E-07 5.57E-07 2.67E-07 1.35E-06 COBALT-G0 Ci 5.98E-07 3.38E-08 1.30E-07 1.20E-07 1.19E-06

= ci Ci = = = =-

= ci Ci 8.36E47 6E 6 4 77 E

__TOTALS Ci 8.36E-07 6.21 E-07 6.87E-07 13.87E-07I 2.54E-06 8

EFFLUENT AND WASTE DISPOSAL REPORT - (cont'd)

TABLE 2A EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES I UNIT QTR QTR QTR QTR TOTAL A FISSION & ACTIVATION PRODUCTS

1. TOTAL RELEASE (NOT INCL. Ci O.OOE+00 4.72E-03 7.25E-04 3.94E-03 9.38E-03 TRITIUM, GASES, ALPHA)

2. AVERAGE DILUTED pCV O.OOE+00 3.98E-09 5.45E-10 5.09E-09 CONCENTRATION DURING ml PERIOD B. TRITIUM

1. TOTAL RELEASE Ci 0.OOE+00 1.03E-02 1.89E-03 1.93E-02 3.15E-02

2. AVERAGE DILUTED pCil O.OOE+00 8.67E-09 I .43E-09 2.50E-08 CONCENTRATION DURING ml PERIOD C. DISSOLVED AND ENTRAINED GASES

1. TOTAL RELEASE Ci O.OOE+00 0.OOE+00 O.OOE+00 O.OOE+00 0.00E+00

2. AVERAGE DILUTED pCl/ 0.OOE+00 O.OOE+00 0.OOE+00 O.OOE+00 CONCENTRATION DURING ml PERIOD _

D. GROSS ALPHA RADIOACTIVITY

1. TOTAL RELEASE Ci 0.OOE+00 13.15E-06 I0.OOE+00 0.OOE+00 3.15E-06 E. VOLUME OF WASTE Liters 0.OOE+00 1.07E+05 2.14E+04 4.13E+04 1.70E+05 RELEASED (PRIOR TO DILUTION)

F. VOLUME OF DILUTION Liters 0.00E+00 1.18E+09 1.35+09 7.74E+08 3.29E+09 WATER USED DURING PERIOD G. PERCENTAGE OF ODCM LIMITS FOR LIQUID RELEASES Il QTR QTR QTR l QTR YEARLY HIGHEST ORGAN l_% 0.00 3.22 0.18 l 1.26 2.33 WHOLE BODY l_% 0.00 6.80 0.38 l 2.66 l4.93 9

EFFLUENT AND WASTE DISPOSAL REPORT - (cont'd)

TABLE 28 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 LIQUID EFFLUENTS NUCLIDES RELEASED UNIT QTR QTR QTR QTR MANGANESE-54 Ci O.OOE+00 0.OOE+00 O.OOE+00 0.OOE+00 IRON-55 Ci 0.OOE+00 1.65E-05 6.39E-06 5.28 E-06 COBALT-60 Ci 0.OOE+00 2.06E-04 2.22E-5 1.10E-04 STRONTIUM-90 Ci 0.OOE+00 7.45E-05 1.59E-05 5.69 E-05 CESIUM-134 Ci 0.OOE+00 0.OOE+00 O.OOE+00 0.OOE+00 CESIUM-137 Ci 0.OOE+00 4.42E-03 6.80E-04 3.76E-03 TOTAL FOR PERIOD Ci O.OOE+00 4.72E-03 7.25E-04 3.94E-03 (ABOVE)

KRYPTON-85 Ci 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 10

EFFLUENT AND WASTE DISPOSAL REPORT - (cont'd)

TABLE 3 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT - 2004 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS A. SOLID WASTE SHIPPED OFFSITE FOR DISPOSAL (Not Irradiated Fuel)

UNIT 6-MONTH 6-MONTH TOTAL

1. TYPE OF WASTE PERIOD PERIOD

a. SPENT RESINS, FILTER SLUDGES, m3 0 0 0 EVAPORATOR BOTTOMS, ETC Ci 0 0 0

b. DRY COMPRESSIBLE WASTE, m3 72.5 10.8 83.3 CONTAMINATED EQUIPMENT, ETC Ci 2.85E-2 2.52E-2 5.37E-2 C. IRRADIATED COMPONENTS, CONTROL m3 0 0 0 RODS, ETC Ci 0 0 0

d. OTHER (DESCRIBE) m3 0 0 0

_ __ __ __ __ _ _ _ _ _ _ _ _ Ci .0 0 0

2. ESTIMATE OF MAJOR NUCLIDE PERCENT 6-MONTH 6-MONTH COMPOSITION (BY TYPE OF WASTE) PERIOD PERIOD Co-60 54 1.23E-2 1.67E-2 Fe-55 12.1 5.42E-3 1.06E-3 Ni-63 18.6 9.87E-3 1.26E-4 Pu-241 1.3 7.1OE-4 H-3 11.1 2.OOE-5 5.92E-3 C-14 1.6 2.85E-6 8.32E-4 Eu-152 1.0 5.29E-4

3. SOLID WASTE DISPOSITION NO. OF SHIPMENTS MODE OF TRANSPORTATION DESTINATION 3 Sole Use Duratek (Oak Ridge, TN)

B. IRRADIATED FUEL SHIPMENTS (DISPOSITION)

NO OF SHIPMENTS MODE OF TRANSPORTATION DESTINATION NONE 11

EFFLUENT AND WASTE DISPOSAL REPORT - (cont'd) 8.0 OFFSITE DOSE CALCULATIONS

SUMMARY

AND CONCLUSIONS:

a. Gaseous Effluent Releases The maximum quarterly offsite gamma dose due to noble gases was 0.00 mRad. The cumulative 2004 annual offsite gamma dose due to noble gases was 0.00 mRad.

The maximum quarterly offsite beta dose due to noble gases was 0.00 mRad. The cumulative 2004 annual offsite beta dose due to noble gases was 0.00 mRad.

The maximum quarterly offsite dose to any organ from the release of H-3 and all radionuclides in particulate form with half-lives greater than 8 days was approximately 7.09E-6 mRem. The cumulative 2004 annual maximum organ dose from these radionuclides was also approximately 1.91 E-5 mRem.

The highest historical annual average X/Q equal to 1.82 E-6 sec/m 3 for the period 1985-1987 for the worst case offsite receptor location, in accordance with the ODCM, was used to calculate these offsite dose values.

b. Liquid Effluent Releases The maximum quarterly organ dose from liquid releases was approximately 1.61 E-1 mRem. The cumulative 2004 annual organ dose was approximately 2.33E-1 mRem. The maximum quarterly total body dose for liquid releases was approximately 1.02E-1 mRem, and the cumulative 2004 annual total body dose was approximately 1.48E-1 mRem.

c. Conclusion All calculated offsite doses were below ODCM limits.

12

EFFLUENT AND WASTE DISPOSAL REPORT - (cont'd) 9.0 OFFSITE DOSE CALCULATION MANUAL (ODCM) REVIEW No changes were made to the ODCM in 2004.

10.0 PROCESS CONTROL PROGRAM (PCP) REVIEW No changes were made to the PCP in 2004.

13

SECTION B ANNUAL RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT

INTRODUCTION:

The RadiologicalEnvironmental Monitoring(REM) Programis conducted to comply with the requirements of the ODCM and in accordance with 10 CFR 50 Appendix I. The REM Programprovides measurements of radiationand of radioactivematerialsin those exposure pathways and for those radionuclides which could potentially lead to radiationdoses to Members of the Public resulting from plant effluents. Environmentalsamples are taken within the surrounding areas of the plant and in selected control or background locations.

The monitoringprogram at the LACBWR facility includes monitoring of liquid and gaseous releases from the plant, as well as environmental samples of surface air, river water, riversediment, milk, fish, and penetratingradiation.

The REM program theory supplements the Radioactive Effluent analyses by verifying that the measurable concentrationsof radioactive materialsand levels of radiationare not higherthan expected on the basis of the effluent measurements and modeling of the environmental exposure pathways using the methodology of the Offsite Dose CalculationManual (ODCM).

An Interlaboratory ComparisonProgramis provided to ensure that independent checks on the precision and accuracy of the measurements of radioactivematerialin environmentalsamples are performed.

I

1.0 SAMPLE COLLECTION Environmental samples are collected from the area surrounding LACBWR at the frequencies outlined in the ODCM. A series of figures and tables are included in this report to better show LACBWR's environmental program.

FIGURE 1 This map includes the plant boundary, roads, other generation plants, and the relationship of the plant to the nearest local community.

FIGURE 2 This map shows the location of LACBWR's permanent environmental monitoring stations.

FIGURES 3&4 These maps show the location of LACBWR's TLDs.

TABLE 5 This table shows the sampling frequency of the various environmental samples and the analyses performed on these samples TABLE 6 This table shows the permanent monitoring stations used in LACBWR's environmental program.

TABLE 7 This table shows the TLD locations.

TABLE 8 This table shows the number of various samples collected and analyzed during 2004.

2.0 RESULTS OF THE 2004 RADIO-ENVIRONMENTAL MONITORING SURVEYS During 2004, activity levels in the local environment were normal, indicating no significant plant attributed radioactivity.

2.1 PENETRATING RADIATION The environmental penetrating radiation dose is measured by thermoluminescent dosimeters consisting of four lithium fluoride (LiF) chips.

These TLD's are changed on a quarterly basis and are sent to an outside contractor for reading. The TLD results for 2004 are shown on Table 9.

2

RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT - (cont'd) 2.2 AIR PARTICULATE Air samples are collected continuously from various sites (see Table 6) around LACBWR. An air sampler is also located 18 miles north of the plant in La Crosse, Wisconsin, to act as a control station.

Particulate air samples are collected at the rate of approximately 30-60 Ipm with a Gelman Air Sampler. The air filter consists of a glass fiber filter with an associated pore size of approximately 0.45 pm. The particulate filters are analyzed weekly for gross beta activity with an internal proportional counter, and the monthly particulate composites are gamma analyzed for individual isotopic concentration.

TABLE 10 This table shows the weekly gross beta gamma activity concentration from the air particulate filters.

TABLE 11 This table shows the composite air particulate isotopic analysis.

Comparison between the control station at La Crosse and the other stations near LACBWR indicate that there was no significant plant attributable airborne particulate activity.

2.3 RIVER WATER River water is collected monthly. River water samples above, at, and below the plant site are collected and are gamma analyzed for isotopic concentration. The river water gamma isotopic analysis results are shown in Table 12. The results indicate that there is insignificant plant-attributable radionuclides in the river water.

3

RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT - (cont'd) 2.4 SEDIMENT SAMPLES Sediment samples were collected twice per year above, at, and below the plant outfall. These samples were gamma analyzed and these results appear on Table 13. They indicated that small amounts of plant attributed radionuclides have accumulated in river sediments near the outfall. The amount of radionuclide in this sediment has been declining significantly since plant shutdown.

2.5 FISH Fish samples were collected quarterly above and below the plant discharge. The results of gamma spectral analysis of edible portions of fish samples appear in Table 14. There has been no significant accumulation of plant attributed radionuclides in fish in the vicinity of LACBWR.

3.0 CONCLUSION

S All environmental samples collected and analyzed during 2004 exhibited no significant contribution from LACBWR.

4

RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT- (cont'd) 4.0 INTERLABORATORY COMPARISON PROGRAM RESULTS During 2004, interlaboratory comparison samples were obtained from an outside contractor. The equipment used to analyze the environmental samples was tested against the contractors' results. The following is the result of this comparison.

ANALYSIS LACBWR CONTRACTOR RATIO

________RESULTS RESULTS ______

GROSS BETA 196 pCi 217 pCi - 0.90 GROSS ALPHA 20.2 pCi 31.5 pCi 0.64 Ce-141 158 pCi 149 pCi 1.06 Cr-51 352 pCi 365 pCi 0.96 Cs-1 34 139 pCi 164 pCi 0.85 Cs-137 127 pCi 121 pCi 1.05 Co-58 139 pCi 141 pCi 0.99 Mn-54 141 pCi 131 pCi 1.08 Fe-59 131 pCi 117 pCi 1.12 Zn-65 208 pCi 189 pCi 1.10 Co-60 173 pCi 168 pCi 1.03 H-3 8550 pCi/t 8060 pCi/t 1.06 5

RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT - (cont'd) 6000 500 . 0 1000 SCALE OF FEET T - 101- N., R-3 -W./

OF THE 51h PM. -

JEFFERSON TOWNSHIP HOUSTON COUNTY, _ /

MINNESOTA o-I M-678 4!: /

INDICATES MILES ABOVE THE MOUTH OF INE OHIO RIVER.

FIGURE 1 - LACBWR PROPERTY MAP A

Evironnental Sample

'n =- Locations 1,

FIGURE 2 - PERMANENT ENVIRONMENTAL MONITORING STATION LOCATIONS (Refer to Table 6)

RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT - (cont'd)

FIGURE 3 - LACBWR ENVIRONMENTAL DOSE ASSESSMENT LOCATIONS 0

M

.1~

W 0

e*11 0 0

0 I0 -4 3

tj 0

~Tj 0

cn z-0

RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT - (cont'd)

TABLE 5 SAMPLE FREQUENCY AND ANALYSIS OF RADIO-ENVIRONMENTAL SAMPLES SAMPLE FREQUENCY ANALYSIS PERFORMED TLD (LiF) Dosimeters Quarterly Dose in mRem Particulate Air Glass Weekly Gross Beta and Gamma Fiber Filters Spectroscopy of Composites Monthly (HPGe-MCA)

Milk Obtain sample as directed if Gamma Spectroscopy abnormal stack particulate release occurs.

Sediment Twice per year Gamma Spectroscopy Fish -Quarterly Gamma Spectroscopy River Monthly Gamma isotopic analysis and tritium (Liquid Scintillation Analyzer)

Vegetation Obtain sample as directed if Gamma Spectroscopy abnormal stack particulate release occurs.

10

RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT - (cont'd)

TABLE 6 PERMANENT ENVIRONMENTAL MONITORING STATION LOCATIONS (Refer to Figure 2)

LOCATION "AIR NO. LOCATION '.'SAMPLE 1 Radio Tower x 2 Dam No. 8 x 3 Trailer Court x 4 Crib House x 5 Main Office x 11

RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT- (cont'd)

TABLE 7 ENVIRONMENTAL TLD LOCATIONS LOCATION NO. LOCATION I LA CROSSE MAIN OFFICE AIR SAMPLER BOX 2 DAM #8 AIR SAMPLER BOX 3 RADIO TOWER BUILDING AT AIR SAMPLER 4 TRAILER COURT AIR SAMPLER BOX 5 CRIBHOUSE AIR SAMPLER BOX 6 G-3 CONTROL ROOM 7 SW GATEPOST AT END OF G-3 DIKE 8 ON FENCE N. SIDE OF FISHERMAN'S ROAD 9 SITE ENTRANCE GUARD AREA 10 ON FENCE AT NE CORNER OF THE SWITCHYARD 11 ON N. SITE AREA FENCE GATE 12 G-1 CRIBHOUSE 13 ON MOORING WALKWAY WEST OF LACBWR #2 WAREHOUSE 14 G-3 COAL UNLOADING CRANE 15 POWER POLE ON BLUFF SIDE EAST OF PLANT 16 RESTRICTED AREA FENCE N. SIDE 17 RESTRICTED AREA FENCE E. SIDE 18 RESTRICTED AREA FENCE S. SIDE 19 RESTRICTED AREA FENCE SW CORNER 20 RESTRICTED AREA FENCE W. SIDE 21 RESTRICTED AREA FENCE NW CORNER 12

RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT - (cont'd)

TABLE 8 RADIO-ENVIRONMENTAL SAMPLES COLLECTED JANUARY-DECEMBER 2004 TYPE OF SAMPLE SAMPLES Penetrating Radiation (TLD's) 83 Air Particulate 267 - -

River Water 36 Sediment 6 Fish 8 13

RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT - (cont'd)

TABLE 9 QUARTERLY THERMOLUMINESCENT DOSIMETER DOSE MEASUREMENTS IN THE LACBWR VICINITY 2004 (Gross mRem)

STATION 1st QUARTER 2nd QUARTER 3rd QUARTER 4th QUARTER NO. mRem mRem mRem mRem 1 12.6 18.6 14.7 18.5 2 17.0 20.5 17.8 24.1 3 15.2 18.7 16.9 20.4 4 17.2 24.1 18.2 21.8 5 18.0 22.9 18.9 24.3 6 16.2 19.9 14.2 19.2 7 20.1 26.4 20.0 25.1 8 17.2 23.3 17.3 24.8 9 13.3 22.7 18.4 25.3 10 15.9 20.3 15.8 20.0 11 14.7 24.5 25.0 24.0 12 21.2 25.0 21.2 31.5 13 17.0 Missing 17.7 18.2 14 13.8 16.4 13.1 15.4 15 20.8 27.8 26.7 30.1 16 26.5 33.0 25.5 38.2 17 33.7 43.5 33.6 44.8 18 44.6 51.9 43.1 50.3 19 24.3 30.8 26.4 31.7 20 20.5 26.2 21.5 26.0 21 24.8 32.6 27.0 29.8 Station #1 (La Crosse Main Office) located approximately 16 miles north of LACBWR is considered the Control TLD.

14

TABLE 10 WEEKLY GROSS BETA AIR PARTICULATES IN THE LACBWR VICINITY (Reporting Level = 10 times Control Value)

COLLECTION LACBWR PLANT TRAILER COURT DAM #8 RADIO TOWER LA CROSSE DATE PCi/Mr3 PCi/rM3 pCI/m 3 PCi/m 3 CONTROL 1/7/04 .029 +.003 .034 +.002 .036 +.003 .030 +.003 .033 +.003 1/14/04 .049 + .004 .048 + .003 .045 + .003 .034 + .003 .047 + .004 1/21/04 .024 +.003 .022 + .002 .028 + .003 .018 + .002 .019 + .003 1/28/04 .018 + .003 .022 + .002 .022 + .003 .015 + .002 .019 + .003 2/4/04 .036 + .004 .028 + .002 .044 + .003 .022 + .002 .035 + .004 2/10/04 .045 + .004 .029 + .003 .037 + .003 .027 + .003 .031 + .004 2/17/04 No Sample .022 + .002 .032 + .003 .018 + .002 .021 + .003 2/25/04 No Sample .020 + .002 .027 + .002 .017 + .002 .029 + .003 3/2/04 .024 +.003 .017 +.002 .027+.002 .017+.002 .027.004 3/10/04 .022 + .003 .019 + .002 .016 + .002 .015 + .002 .020 + .003 3/17/04 .017 + .003 .016 + .002 .017 + .002 .013 + .002 .015 + .003 3/24/04 .014 + .002 .013 + .002 .019 + .002 .013 + .002 .015 + .002 3/31/04 .014 + .002 .015 + .002 .018 + .002 .014 + .002 .013 + .002 4/7/04 .016 + .002 .015 + .002 .024 + .003 .013 + .002 .017 + .002 4/14/04 .011 + .002 .013 + .002 .015 + .002 .007 + .001 .011 + .002 4/21/04 .019 + .002 .018 + .002 .026 + .003 .017 + .002 .025 +.003 4/28/04 .012 + .002 .010 + .001 .014 + .002 .013 + .002 .013 + .002 5/5/04 .018 + .002 .016 + .001 .014 + .002 .015 + .002 .015 + .002 5/12/04 .019 +.002 .015 +.002 .016 +.002 .017+.002 .021 +.002 15

TABLE 10 WEEKLY GROSS BETA AIR PARTICULATES INTHE LACBWR VICINITY (Reporting Level = 10 times Control Value)

COLLECTION LACBWR PLANT TRAILER COURT DAM #8 RADIO TOWER LA CROSSE DATE pCiIm3 pCiIm3 pCi/m 3 pci/m3 CONTROL 5/19/04 .013 + .002 .011 + .002 .009 + .001 .013 + .002 .013 + .002 5/26/04 .008 + .002 .007 + .001 No Sample .007 + .001 .007 + .002 6/2/04 .009 + .002 .010 + .001 .008+ .001 .010 + .001 .010 + .002 6/9/04 .013 +.002 .013 +.002 .009 +.002 .013 +.002 .015 +.002 6/16/04 .013 +.002 .013+/-.002 .011 +.002 .013+/-.002 .014 +.002 6/23/04 .010 + .002 .010 + .002 .010 + .002 .011 + .002 .012 + .002 6/30/04 .011 +.002 .010 +.002 .012 +.002 .011 +.002 .011 +.002 717/04 .017 + .002 .015 +/- .002 .020 + .002 .016 + .002 .015 + .002 7/14/04 .015 +.002 .012+.002 .016+.002 .013 +.002 .014 +.002 7/21/04 .017 + .002 .012 +.002 .018 +.002 .014 +/-.002 .015 +.003 7/28/04 .016 + .002 .016 + .002 .014 + .003 .017 + .002 .020 + .003 8/4/04 .020 + .002 .018 +.002 .015+ .002 .017 + .002 .015 + .002 8/11/04 .023 +.004 .022+/-+.003 .026 +.004 .025 +.003 .028 + .005 8/18/04 .029 + .005 .036 + .004 .031 + .004 .034 + .004 .014 + .005 8/25/04 .016 + .002 .017 + .002 .016 + .002 .016 + .002 .018 + .003 8/31/04 .007 +.001 .012 +.002 .012 +.002 ..019 +.004 .012 + .002 9/7/04 .028 + .003 .023 + .002 .027 + .002 0.27 + .002 .025 + .003 9/15/04 .017 + .002 .021 + .002 .035 + .003 .020 + .002 .026 + .003 9/22/04 .016 + .002 .021 + .002 .025 + .002 0.23 + .002 .019 + .003 9/28/04 .024 + .003 .024 + .002 .023 + .002 .022 + .002 .021 + .003 16

TABLE 10 WEEKLY GROSS BETA AIR PARTICULATES IN THE LACBWR VICINITY (Reporting Level = 10 times Control Value)

COLLECTION LACBWR PLANT TRAILER COURT DAM #8 RADIO TOWER LA CROSSE DATE pCI/mr3 PCI/r 3 pCi/rn 3 pCi/mr3 CONTROL 10/6/04 .016 + .002 .016 + .002 .015 + .002 .015 + .002 .016 + .002 10/13/04 .019 + .003 .017 + .002 .028 + .003 .019 + .002 .021 + .003 10/19/04 .010 +.002 .011 +.002 .012 +.002 .009 +.002 .010 +.003 10/27/04 .015 + .002 .014 + .002 .017 + .002 .010 + .002 .016 + .002 11/2/04 .011 +.002 .012 +.002 .010 +.003 .012 +.002 .010 +.003 11/10/04 .016 + .002 .016 + .002 .023 + .003 .017 + .002 .017 + .003 11/17/04 .021 +.003 .022 +.002 .029 +.003 .019 +.002 .019 +.003 11/23/04 .022 + .003 .023 + .002 .018 + .003 .020 + .002 .020 + .003 12/1/04 .019+ .002 .018 + .002 .020 + .002 .015 + .002 .016 + .003 12/8/04 .020+ .003 .016 + .002 .020 + .003 .017 + .002 .016 + .003 12/14/04 .025 + .003 .025 + .002 *.081 + .003 .022 + .002 .020 + .003 12/22/04 .021 +.003 .018 +.002 .020 +.002 .020 +.002 .018 +.003 12/29/04 .023 + .003 .023 + .003 .024 + .003 .021 + .002 .025 +.004

• Low Sample Volume

.,I 17

TABLE 11 AIR PARTICULATE COMPOSITE RESULTS (Concentrations in pCi/M 3 )

LOCATION RADIO TOWER LACBWR TRAILER COURT DAM NO. 8 LA CROSSE START DATE 12-30-03 12-30-03 12-30-03 12-30-03 12-30-03 END DATE 1-28-04 1-28-04 1-28-04 1-28-04 1-28-04 ISOTOPES/RL*

Cs-134/10 <2.47E-3 <3.15E-3 <2.02E-3 <2.61 E-3 <3.24E-3 Cs-1 37/20 <2.55E-3 <3.35E-3 <2.10E-3 <2.78E-3 <3.38E-3

• RL = REPORTING LEVEL I

LOCATION RADIO TOWER LACBWR TRAILER COURT DAM NO. 8 LA CROSSE START DATE 1-28-04 1-28-04 1-28-04 1-28-04 1-28-04 END DATE 3-2-04 3-2-04 3-2-04 3-2-04 3-2-04 ISOTOPES/RL*

Cs-134/10 <2.05E-3 <5.38E-3 <1.59E-3 <2.29E-3 <3.1 OE-3 Cs-137/20 <2.17E-3 <5.65E-3 <1.71E-3 <2.42E-3 <3.08E-3

• RL = REPORTING LEVEL 18

TABLE 11 AIR PARTICULATE COMPOSITE RESULTS (Concentrations in pCi/m 3 )

LOCATION RADIO TOWER LACBWR TRAILER COURT DAM NO. 8 LA CROSSE START DATE 3-2-04 3-2-04 3-2-04 3-2-04 3-2-04 END DATE 3-31-04 3-31-04 3-31-04 3-31-04 3-31-04 ISOTOPES/RL*

Cs-134/10 <2.59E-3 <3.06E-3 <1.96E-3 <2.61 E-3 <3.29E-3 Cs-137/20 1.75E-3+/-5.02E-4 1.71 E-3+/-5.50E-4 1.43E-3+/-4.02E-4 <1.63E-3 <1.94E-3 Co-60 1.56E-3+/-4.35E-4

• RL = REPORTING LEVEL LOCATION RADIO TOWER LACBWR TRAILER COURT DAM NO. 8 LA CROSSE START DATE 3-31-04 3-31-04 3-31-04 3-31-04 3-31-04 END DATE 4-28-04 4-28-04 4-28-04 4-28-04 4-28-04 ISOTOPES/RL* _

Cs-134/10 <2.19E-3 <3.57E-3 <2.12E-3 <2.77E-3 <3.61 E-3 Cs-1 37/20 1.1 OE-3+/-3.77E-4 2.36E-3+/-6.64E-4 <1.08E-3 <1.41 E-3 <3.73E-3 Co-60 1.29E-3+/-3.29E-4

• RL = REPORTING LEVEL 19

TABLE 11 AIR PARTICULATE COMPOSITE RESULTS (Concentrations in pCi/M 3 )

LOCATION RADIO TOWER LACBWR TRAILER COURT DAM NO. 8 LA CROSSE START DATE 4-28-04 4-28-04 4-28-04 4-28-04 4-28-04 END DATE 5-26-04 5-26-04 5-26-04 5-26-04 5-26-04 ISOTOPES/RL*

Cs-134/10 <2.01 E-3 <318E-3 <2.13E-3 <2.86E-3 <3.38E-3 Cs-1 37/20 <1.30E-3 <2.21 E-3 1.66E-3+/-4.41 E-4 <1 .59E-3 1.80E-3+/-6.1 OE-4 Co-60 1.29E-3+/-3.41 E-4

• RL = REPORTING LEVEL LOCATION RADIO TOWER LACBWR TRAILER COURT DAM NO. 8 LA CROSSE START DATE 5-26-04 5-26-04 5-26-04 5-26-04 5-26-04 END DATE 6-30-04 6-30-04 6-30-04 6-30-04 6-30-04 ISOTOPES/RL*

Cs-1 34/10 <1.70E-3 <2.57E-3 <1.67E-3 <1.89E-3 <2.68E-3 Cs-1 37/20 <1.83E-3 <2.70E-3 <1.83E-3 <1.89E-3 <2.87E-3

• RL = REPORTING LEVEL 20

TABLE 11 AIR PARTICULATE COMPOSITE RESULTS (Concentrations in pCi/M 3 )

LOCATION RADIO TOWER LACBWR TRAILER COURT DAM NO. 8 LA CROSSE START DATE 6-30-04 6-30-04 6-30-04 6-30-04 6-30-04 END DATE 7-28-04 7-28-04 7-28-04 7-28-04 7-28-04 ISOTOPES/RL* .

Cs-1 34/10 <2.11 E-3 <3.15E-3 <2.13E-3 <2.55E-3 <3.72E-3 Cs-1 37/20 <1 .67E-3 2.56E-3+/-6.73E-4 <1.29E-3 <1 .36E-3 2.18E-4+/-7.26E-4

• RL = REPORTING LEVEL LOCATION RADIO TOWER LACBWR TRAILER COURT DAM NO. 8 LA CROSSE START DATE 7-28-04 7-28-04 7-28-04 7-28-04 7-28-04 END DATE 8-31-04 8-31-04 8-31-04 8-31-04 8-31-04 ISOTOPES/RL* _

Cs-134/10 <2.09E-3 <2.78E-3 <1.76E-3 <1.89E-3 <3.1 OE-3 Cs-1 37/20 <2.22E-3 <2.86E-3 <1.84E-3 <1.98E-3 <3.04E-3

• RL = REPORTING LEVEL 21

TABLE 11 AIR PARTICULATE COMPOSITE RESULTS (Concentrations in pCi/M 3 )

LOCATION RADIO TOWER LACBWR TRAILER COURT DAM NO. 8 LA CROSSE START DATE 8-31-04 8-31-04 8-31-04 8-31-04 8-31-04 END DATE 9-28-04 9-28-04 9-28-04 9-28-04 9-28-04 ISOTOPES/RL*

Cs-134/10 <2.25E-3 <3.32E-3 <2.43E-3 <2.99E-3 <4.12E-3 Cs-137/20 <1.21E-3 <1.66E-3 <1.38E-3 <3.16E-3 <3.96E-3

• RL = REPORTING LEVEL LOCATION RADIO TOWER LACBWR TRAILER COURT DAM NO. 8 LA CROSSE START DATE 9-28-04 9-28-04 9-28-04 9-28-04 9-28-04 END DATE 10-27-04 10-27-04 10-27-04 10-27-04 10-27-04 ISOTOPES/RL*

Cs-134/10 <2.16E-3 <3.66E-3 <2.19E-3 <3.32E-3 <3.88E-3 Cs-1 37/20 <2.22E-3 <3.78E-3 <2.32E-3 <3.48E-3 <4.11 E-3 RL = REPORTING LEVEL 22

TABLE 11 AIR PARTICULATE COMPOSITE RESULTS (Concentrations in pCi/M 3 )

LOCATION RADIO TOWER LACBWR TRAILER COURT DAM NO. 8 LA CROSSE START DATE 10-27-04 10-27-04 10-27-04 10-27-04 10-27-04 END DATE 12-1-04 12-1-04 12-1-04 12-1-04 12-1-04 ISOTOPES/RL*

Cs-134110 <1.79E-3 <2.99E-3 <1.87E-3 <3.28E-3 <3.68E-3 Cs-1 37/20 1.20E-3+/-3.55E-4 <1.48E-3 <1.04E-3 <1.57E-3 2.68E-3+/-7.29E-4

• RL = REPORTING LEVEL LOCATION RADIO TOWER LACBWR TRAILER COURT DAM NO. 8 LA CROSSE START DATE 12-1-04 12-1-04 12-1-04 12-1-04 12-1-04 END DATE 12-29-04 12-29-04 12-29-04 12-29-04 12-29-04 ISOTOPES/RL*

Cs-134/10 <2.42E-3 <3.92E-3 <2.36E-3 <4.01 E-3 <5.22E-3 Cs-137/20 <2.52E-3 <4.09E-3 <2.42E-3 <4.14E-3 <5.25E-3

• RL = REPORTING LEVEL I 23

TABLE 12 RESULTS OF ANALYSIS OF MISSISSIPPI RIVER WATER IN THE VICINITY OF LACBWR (Concentrations in pCi/Liter)

SAMPLE #1 SAMPLE #2 SAMPLE #3 SAMPLE #1 SAMPLE #2 SAMPLE #3 COLLECTION DATE: 1-13-04 1-13-04 1-13-04 2-10-04 2-10-04 2-10-04 SAMPLE LOCATION: DAM 8 OUTFALL VICTORY DAM 8 OUTFALL VICTORY ISOTOPES/RL

• H-3 295 +/-130 230 +/- 129 309 +/- 130 172 +/- 125 <132 147 +/- 124 Mn-54/1000 <5.40 <5.38 <5.46 <5.29 <5.24 <5.38 Co-60/300 <5.48 <5.70 <5.70 <5.75 <5.53 <5.71 Zn-65/300 <11.9 <11.6 <11.8 <11.4 <11.7 <11.7 Cs-134/30 <5.67 <5.61 .<5.49 <5.66 <5.62 <5.62 Cs-137/50 <3.29 <2.76 <5.97 <3.67 <5.93 <5.83

_T _

• RL = REPORTING LEVEL 24

TABLE 12

(.

RESULTS OF ANALYSIS OF MISSISSIPPI RIVER WATER IN THE VICINITY OF LACBWR (Concentrations in pCi/Liter)

SAMPLE #1 SAMPLE #2 SAMPLE #3 SAMPLE #1 SAMPLE #2 SAMPLE #3 COLLECTION DATE: 3-9-04 3-9-04 3-9-04 4-13-04 4-13-04 4-14-04 SAMPLE LOCATION: DAM 8 OUTFALL VICTORY DAM 8 OUTFALL VICTORY ISOTOPES/RL * .

H-3 <128 367 +/- 124 377 +/- 124 255 +/- 132 276 +/- 132 300 +/- 133 Mn-54/1000 <5.43 <5.31 <5.34 <5.39 <5.24 <5.36 Co-60/300 <5.61 <5.68 <5.67 <5.58 <5.79 <5.76 Zn-65/300 <12.0 <11.8 <11.4 <11.7 <12.0 <12.1 Cs-1 34/30 <5.70 <5.71 <5.69 <5.53 <5.75 <5.72 Cs-137/50 <5.95 <5.92 <2.78 <3.88 2.62 +/- .993 3.18 +/- 1.11

• RL = REPORTING LEVEL 25

TABLE 12 RESULTS OF ANALYSIS OF MISSISSIPPI RIVER WATER IN THE VICINITY OF LACBWR (Concentrations in pCi/Liter)

SAMPLE #1 SAMPLE #2 SAMPLE #3 SAMPLE #1 SAMPLE #2 SAMPLE #3 COLLECTION DATE: 5-11-04 5-11-04 5-11-04 6-14-04 6-14-04 6-14-04 SAMPLE LOCATION: DAM 8 OUTFALL VICTORY DAM 8 OUTFALL VICTORY ISOTOPES/RL

• H-3 < 136 < 136 197 +/-127 253 +/-125 < 131 < 131 Mn-54/1000 <5.25 <5.33 <5.37 <5.21 <5.43 <5.35 Co-60/300 <5.51 <5.28 <5.60 <5.77 <5.53 <5.62 Zn-65/300 <11.9 <11.6 .<11.9 <11.9 <12.0 <11.7 Cs-1 34/30 <5.83 <5.78 <5.92 <5.76 <5.83 <5.70 Cs-1 37/50 <3.12 <5.85 <2.88 <5.97 7.90 +/- 1.43 <3.67

• RL = REPORTING LEVEL 26

TABLE 12 RESULTS OF ANALYSIS OF MISSISSIPPI RIVER WATER IN THE VICINITY OF LACBWR (Concentrations in pCi/Liter)

SAMPLE #1 SAMPLE #2 SAMPLE #3 SAMPLE #1 SAMPLE #2 SAMPLE #3 COLLECTION DATE: 7-13-04 7-13-04 7-13-04 8-9-04 8-9-04 8-9-04 SAMPLE LOCATION: DAM 8 OUTFALL VICTORY DAM 8 OUTFALL VICTORY ISOTOPES/RL

• H-3 349 +/- 127 259 +/-125 280 +/- 126 327 +/- 128 271 128 306 +/- 128 I Mn-54/1000 <5.31 <5.27 <5.35 <5.28 <5.35 <5.40 Co-60/300 <5.69 <5.64 <5.57 <5.63 <5.60 <5.35 Zn-65/300 <11.7 <11.7 .<11.7 <11.8 <11.8 <12.1 Cs-I 34/30 <5.63 <5.69 <5.71 <5.70 <5.61 <5.68 Cs-I 37/50 <5.89 <5.97 <5.89 <2.81 <6.08 <3.04 I +

• 1" 4 4 + I I A .A. A A -

• RL = REPORTING LEVEL 27

TABLE 12 RESULTS OF ANALYSIS OF MISSISSIPPI RIVER WATER IN THE VICINITY OF LACBWR (Concentrations in pCi/Liter)

SAMPLE #1 SAMPLE #2 SAMPLE #3 SAMPLE #1 SAMPLE #2 SAMPLE #3 COLLECTION DATE: 9-14-04 9-14-04 9-14-04 10-12-04 10-12-04 10-12-04 SAMPLE LOCATION: DAM 8 OUTFALL VICTORY DAM 8 OUTFALL VICTORY ISOTOPES/RL

• H-3 256 +/- 126 221 +/- 126 214 +/-126 <145 <145 <145 Mn-54/1 000 <5.19 <5.17 <5.34 <5.29 <5.49 <5.41 Co-60/300 <5.58 <5.72 <5.68 <5.84 <5.70 <5.78 Zn-65/300 <11.9 <11.4 .<11.8 <12.1 <11.9 <12.0 Cs-1 34/30 <5.82 <5.78 <5.77 <5.82 <5.79 <5.88 Cs-1 37/50 <2.96 <3.20 <2.93 <3.75 <3.00 <5.82

• RL = REPORTING LEVEL 28

TABLE 12 RESULTS OF ANALYSIS OF MISSISSIPPI RIVER WATER IN THE VICINITY OF LACBWR (Concentrations in pCi/Liter)

SAMPLE #1 SAMPLE #2 SAMPLE #3 SAMPLE #1 SAMPLE #2 SAMPLE #3 COLLECTION DATE: 11-8-04 11-8-04 11-8-04 12-8-04 12-8-04 12-8-04 SAMPLE LOCATION: DAM 8 OUTFALL VICTORY DAM 8 OUTFALL VICTORY ISOTOPES/RL

• H-3 <131 <131 <131 <130 <130 <130 I Mn-54/1000 <5.18 <5.23 <5.15 <5.29 <5.39 <5.27 Co-60/300 <5.39 <5.34 <5.79 <5.56 <5.49 <5.19 Zn-65/300 <11.4 <11.4 .<11.4 <11.6 <11.9 <11.5 Cs-1 34/30 <5.57 <5.58 <5.66 <5.64 <5.70 <5.42 Cs-1 37/50 <3.25 <3.42 <3.59 <3.20 <3.07 <2.86

• RL = REPORTING LEVEL 29

TABLE 13 RESULTS OF ANALYSIS OF MISSISSIPPI RIVER SEDIMENT IN THE VICINITY OF LACBWR (Concentration in pCi/Kg)

(Reporting Level = 10 times Control Value)

COLLECTION DATE SAMPLE # 1 SAMPLE # 2 SAMPLE # 3 SAMPLE # 1 SAMPLE # 2 SAMPLE # 3 SAMPLE LOCATION 6-23-04 6-23-04 6-23-04 8-4-04 8-4-04 8-4-04 UPSTREAM OUTFALL DOWNSTREAM UPSTREAM OUTFALL DOWNSTREAM ISOTOPES Cs-134 <7.37 <7.04 <13.6 <15.1 <9.7 <19.1 Cs-137 16.4 +/-1.81 173 +/-12.1 6.17 +/-1.84 102 +/- 8.05 299 +/- 20.7 9.94 +/- 2.62 Eu-155 131 +/-15.4 110 +/-1.35 130 +/-16.4 165 +/-17.9 Co-60 +/-

160 7.72 30

TABLE 14 FISH SAMPLE ACTIVITY IN THE VICINITY OF LACBWR (Concentrations in pCi/Kg)

SAMPLE #1 SAMPLE #2 SAMPLE #1 SAMPLE #2 SAMPLE #1 SAMPLE #2 COLLECTION DATE: 3-23-04 3-23-04 6-14-04 6-14-04 8-17-04 8-17-03 FISH SPECIES: CARP WALLEYE CARP NORTHERN CARP BASS &

PIKE WALLEYE ISOTOPES/RL*

Mn-54 / 3E4 <7.27 <8.14 <6.83 <6.75 <7.06 <8.33 Co-60/ 1E4 <8.30 <9.62 <7.73 <7.70 <7.84 <9.51 Zn-65/ 2E4 <18.4 <21.2 <18.0 <17.3 <18.0 <21.2 Cs-1 34/ 1E3 <7.42 <8.03 <7.11 <6.57 <7.01 <8.25 Cs-1 37/ 2E3 <4.28 <8.76 4.45 +/- 1.33 4.07 +/- 1.30 <3.57 <9.48

• RL =REPORTING LEVEL 31

TABLE 14 FISH SAMPLE ACTIVITY IN THE VICINITY OF LACBWR (Concentrations in pCi/Kg)

SAMPLE #1 SAMPLE #2 SAMPLE #1 SAMPLE #2 SAMPLE #1 SAMPLE #2 COLLECTION DATE: 10-7-04 10-7-04 FISH SPECIES: CARP WALLEYE ISOTOPES/RL*

Mn-54/ 3E4 <7.98 <8.06 Co-60/ 1E4 <9.17 <9.40 Zn-65/ 2E4 <20.1 <21.1 Cs-1 34/ 1E3 <7.90 <8.10 Cs-1 37/ 2E3 <4.28 <4.96 RL =REPORTING LEVEL 32