Text

License DPR-49, 2001 Annual Radiological Environmental Report
	ML021230468
Person / Time
Site:	Duane Arnold
Issue date:	04/26/2002
From:	Richard Anderson; Nuclear Management Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	NG-02-0364
	Download: ML021230468 (106)
	v • d • e

Duane Arnold Energy Center 3313 DAEC Road Palo, IA52324-9646 Committed to Nuclear Excellence 5 Operatedby NuclearManagement Company, LLC April 26, 2002 NG-02-0364 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station O-P1-17 Washington, DC 20555-0001

Subject:

Duane Arnold Energy Center Docket No.: 50-331 Operating License No.: DPR-49 2001 Annual Radiological Environmental Report Please find attached one (1) copy of the 2001 Annual Radiological Environmental Report for the Duane Arnold Energy Center. This report is transmitted in accordance with the DAEC Offsite Dose Assessment Manual (section 6.4.2) and Technical Specifications (section 5.6.2) reporting requirements.

Sincerely, Robert Anderson Plant Manager - Nuclear RA/SF/hc Attachment cc: Mr. James E. Dyer (w/attachments)

Regional Administrator Region III U. S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, Illinois 60532-4351 NRC Resident Inspector - DAEC (w/attachments)

D. Hood (NRC-NRR) (w/attachments)

E. Protsch - (w/o attachments)

R. Brown - (w/o attachments)

G. VanMiddlesworth(w/o attachments)

Wendell Aldrich (OSRC) (w/attachments)

CTS Project (w/attachments) A0 DOCU (w/attachments)

-

Environmental, Inc.

Midwest Laboratory an AJiegheny Technologies Co.

700 Landwehr Road

Northbrook, IL 60062-2310 ph. (847) 564-0700

fax (847) 564-4517 IES UTILITIES, INC.

CEDAR RAPIDS, IOWA DUANE ARNOLD ENERGY CENTER CEDAR RAPIDS, IOWA DOCKET NO. 50-331 ANNUAL REPORT TO THE UNITED STATES NUCLEAR REGULATORY COMMISSION Radiation Environmental Monitoring Program January 1 to December 31, 2001 Prepared and submitted by ENVIRONMENTAL, Inc.

Midwest Laboratory Project No. 8001 Approved :

Oronla Gr~obMS nager L bOrat

PREFACE Staff members of the Environmental, Inc., Midwest Laboratory were responsible for the acquisition of data presented in this report, with the exception of Appendices D and E, which were completed by DAEC personnel. All environmental samples, with the exception of aquatic, were collected by personnel of DAEC. Aquatic samples were collected by the University of Iowa Hygienic Laboratory.

The report was prepared by Environmental, Inc., Midwest Laboratory, with the exception of Appendices D and E, which were prepared by DAEC personnel.

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TABLE OF CONTENTS No. Pae PREFACE ...................................................................................................................... ii List of Tables ........................................................................................................ v List of Figures ...................................................................................................... vi 1.0 INTRODUCTJON ..................................................................................................... 1 2.0 SUM MARY .......................................................................................................... 2 3.0 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM .......................... 3 3.1 Program Design and Data Interpretation ..................................................... 3 3.2 Program Description ................................................................................... 4 3.3 Program Execution ..................................................................................... 5 3.4 Laboratory Procedures ................................................................................ 6 3.5 Program Modifications ................................................................................. 6 4.0 RESULTS AND DISCUSSION ................................................................................ 7 4.1 Atmospheric Nuclear Detonations and Nuclear Accidents .......................... 7 4.2 Program Findings ....................................................................................... 7 5.0 TABLES AND FIGURES ....................................................................................... 10

6.0 REFERENCES

CITED ......................................................................................... 27 APPENDICES A Interlaboratory Comparison Program Results ..................................................... A-1 B Data Reporting Conventions ................................................................................ B-1 C Effluent Concentration Limits for Radioactivity in Air and Water Above Background in Unrestricted Areas .......................................................... C-1 D Sum m ary of the Land Use Census .................................................................... D-1 E Annual Radiation Dose Assessment ........................................................................ E-1 iii

TABLE OF CONTENTS (continued)

PART II Paae Data Tabulations and Analyses .................................................................................... i iv

LIST OF TABLES No. Page 5.1 Characteristic Properties of Isotopes Quantified in Gamma-spectroscopic Analyses .................................................................................................... 11 5.2 Sample Collection and Analysis Program .............................................................. 12 5.3 Sampling Locations, DAEC .................................................................................. 15 5.4 Type and Frequency of Collections ....................................................................... 17 5.5 Sample Codes Used in Table 5.4 .......................................................................... 18 5.6 Missed Collections and Analyses ........................................................................... 19 5.7 Radiological Environmental Monitoring Program Summary ................................... 20 In addition, the following tables are in the Appendices:

Appendix A A-1 Interiaboratory Comparison Program Results ..................................................... Al-1 A-2 Interlaboratory Comparison Program Results, Thermoluminescent Dosimeters (TLDs) ...................................................................................... A2-1 A-3 In-house Spiked Samples ......................................................................................... A3-1 A-4 In-house "Blank" Samples ........................................................................................ A4-1 A-5 In-house "Duplicate" Samples .............................................................................. A5-1 A-6 Department of Energy MAPEP comparison results ................................................. A6-1 A-7 Environmental Measurements Laboratory Quality (EML) Assessment Program comparison results ....................................................................... A7-1 Attachment A: Acceptance criteria for spiked samples ............................................ A-2 Appendix C C-1 Effluent Concentration Limits for Radioactivity in Air and Water Above Background in Unrestricted Areas ............................................................... C-2 v

LIST OF FIGURES No. Pap' 5.1 Radiological Environmental Monitoring Program Sampling Stations near the Duane Arnold Energy Center ..................................................................... 25 5.2 Radiological Environmental Monitoring Program Sampling Stations Outside 0.5 Miles .................................................................................................... 26 vi

1.0 INTRODUCTION

This report summarizes and interprets results of the Radiological Environmental Program conducted by Environmental, Inc., Midwest Laboratory at the Duane Arnold Monitoring Energy Center, Palo, Iowa, during the period January - December 2001. This program monitors of radioactivity in the airterrestrial, and aquatic environments in order to assess the the level impact of the Plant on its surroundings.

Tabulation of the individual analysis made during the year are included in Part II of this report.

Duane Arnold Energy Center (DAEC) is located in Linn County, Iowa on the Cedar and is operated by Nuclear Management Corporation. The Duane Arnold Energy River Center is a boiling water reactor. Initial criticality was attained on March 23, 1974. The reactor reached 100% power on August 12, 1974. Commercial operation began on February 1, 1975.

The Licensed power level was increased to 1912 MWth in November of 2001.

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2.0

SUMMARY

The Radiological Environmental Monitoring Program required by the U.S. Nuclear Regulatory Commission (NRC) Technical Specifications for the Duane Arnold Energy Center is described. Results for 2001 are summarized and discussed.

Program findings show background levels of radioactivity in the environmental samples collected in the vicinity of the Duane Arnold Energy Center. No effect on the environment due to the operation of the Duane Arnold Energy Center is indicated.

3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 3.1 Program Desigqn and Data Interpretation The purpose of the Radiological Environmental Monitoring Program at the Duane Arnold Energy Center (DAEC) is to assess the impact of the plant on its environment. For this purpose, samples are collected from the air, terrestrial, and aquatic environments and analyzed for radioactive content. In addition, ambient gamma radiation levels are monitored by thermoluminescent dosimeters (TLDs).

Sources of environmental radiation include the following:

(1) Natural background radiation arising from cosmic rays and primordial radionuclides; (2) Fallout from atmospheric nuclear detonations; (3) Releases from nuclear power plants; and (4) Industrial and medical radioactive waste.

In interpreting the data, effects due to the DAEC operation must be distinguished from those due to other sources.

A major interpretive aid in assessment of these effects is the design of the monitoring program at the DAEC which is based on the indicator-control concept. Most types of samples are collected both at indicator locations (nearby, downwind, or downstream) and at control locations (distant, upwind, or upstream). A station effect would be indicated if the radiation level at an indicator location was significantly larger than that at the control location. The difference would have to be greater than could be accounted for by typical fluctuations in radiation levels arising from other sources.

An additional interpretive technique involves analyses for specific radionuclides present in the environmental samples collected from the DAEC site. The DAEC's monitoring program includes analyses for strontium-90 and iodine-131, which are fission products, and tritium, which is produced by cosmic rays, atmospheric nuclear detonations, and also by nuclear power plants.

Most samples are also analyzed for gamma-emitting isotopes with results for the following groups quantified: zirconium-95, cesium-137, and cerium-144. These three gamma-emitting isotopes were selected as radiological impact indicators because of the different characteristic proportions in which they appear in the fission product mix produced by a nuclear reactor and that produced by a nuclear detonation. Each of the three isotopes is produced in roughly equivalent amounts by a reactor: each constitutes about 10% of the total activity of fission products ten (10) days after reactor shutdown. On the other hand, ten (10) days after a nuclear explosion, the contributions of zirconium-95, cerium-144, and cesium-137 to the activity of the resulting debris are in the approximate ratio 4:1:0.03 (Eisenbud,1963). The other group quantified consists of niobium-95, ruthenium-103 and -106, cesium-134, barium-lanthanum-140, and cerium-141. These isotopes are released in small quantities by nuclear power plants, but to date their major source of injection into the general environment has been atmospheric nuclear testing. Nuclides of the next group, manganese-54, cobalt-58 and-60, and zinc-65, are activation products and arise from activation of corrosion products. They are typical components of nuclear power plant effluents, but are not produced in significant quantities by nuclear detonations. Nuclides of the final group, beryllium-7, which is of cosmogenic origin, and potassium-40, a naturally-occurring isotope, were chosen as calibration monitors and should not be considered radiological impact indicators.

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3.1 Program Desiqn and Data Interpretation (continued)

Characteristic prooerties of isotopes quantified in gamma-spectroscopic analysis are presented in Table 5.1. Other means of distinguishing sources of environmental radiation can be employed in interpreting the data. Current radiation levels can be compared with previous levels, including those measured before the Plant became operational. Results of the DAEC's Monitoring Program can be related to those obtained in other parts of the world. Finally, results can be related to events known to cause elevated levels of radiation in the environment, e.g., atmospheric nuclear detonations.

3.2 Proqram Description The sampling and analysis schedule for the environmental radiological monitoring program at the DAEC is summarized in Table 5.2 and is briefly reviewed below. Table 5.3 defines the sampling location codes used in Table 5.2 and specifies for each location its type (indicator or control) and its distance, direction, and sector relative to the reactor site. The types of samples collected at each location and the frequency of collections are presented in Table 5.4 using codes defined in Table 5.5.

To monitor the air environment, airborne particulates are collected on membrane filters by continuous pumping at twelve locations. Also, airborne iodine is collected by continuous pumping through charcoal filters at six of these locations. Nine of the twelve locations are indicators and three are controls (D-1, D-2, and D-13). Filters are changed and counted weekly. Particulate filters are analyzed for gross beta activity. If gross beta activity exceeds ten times the yearly mean of the control samples, gamma isotopic analysis is performed. Quarterly composites of airborne particulates from each location are analyzed for gamma emitting isotopes.

Charcoal filters are analyzed weekly for iodine-131 on all samples.

Ambient gamma radiation is monitored at twelve air sampling locations. In addition, gamma radiation is monitored at thirty-three special locations: seventeen in a circle within a 0.5 mi. radius of the DAEC stack; six in 22.5' sectors within 1 mi. of the DAEC stack; and ten in 22.50 sectors between 1 and 3 miles of the DAEC stack. Two TLDs are placed at each location and are exchanged and analyzed quarterly.

Precipitation is collected monthly from one location and analyzed for gamma-emitting isotopes.

Quarterly composites are analyzed for tritium.

Milk samples are collected monthly from five locations during the non-grazing season, October through April, and biweekly during the grazing season, May 1 through September 30. One location is a control (D-105) and the rest are indicators. All samples are analyzed for iodine-131 and gamma-emitting isotopes.

For additional monitoring of the terrestrial environment, grain, hay and broad leaf vegetation samples are collected annually, as available, from nine locations: one control (D-105) and eight indicators (D-16, D-57, D-58, D-63, D-72, D-93, D-94, and D-106). Grain, hay and broad leaf (green leafy) vegetation samples are analyzed for gamma-emitting isotopes and at least one broad leaf vegetation is analyzed for iodine-131. If cattle are slaughtered for home use, a meat sample is collected annually, during or immediately following a grazing period from animals grazing on-site. The sample is analyzed for gamma-emitting isotopes. Also, potable ground water is collected quarterly from a treated municipal water system (D-53), the inlet to the municipal water treatment system (D-54) and four additional ground water locations (D-55, D-57, D-58, and D-72). The samples are analyzed for gross beta and tritium. If gross beta activity exceeds ten times the yearly mean of the control samples, gamma isotopic, strontium-89 and strontium-90 analyses are performed.

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Program Description (continued)

Soil samples are collected once per year at two indicator locations (D-1 5 and D-1 6). The samples are analyzed for strontium-90 and gamma-emitting isotopes.

Surface water is collected monthly from five river, pond and sewage effluent locations, one control (D-49) and four indicator (D-50, D-51, D-99, and D-107). All monthly samples are analyzed for gamma-emitting isotopes. Tritium analyses are performed on quarterly composites from each location. In addition, all samples from Location D-107 (plant sewage discharge) are analyzed for potassium-40 by flame photometry.

The aquatic environment is also monitored by upstream and downstream (D-49 and D-61) semiannual collection~s of fish. River bottom sediment is also collected semiannually at the plant's intake and discharge(t--50 and D-51) and downstream of the sewage plant (D-107). The samples are analyzed for gamma-emitting isotopes.

3.3 Program Execution The program was executed as described in the preceding section with the following exceptions:

(1) Milk:

No sample was available from location D-93 for the December, 2001 collection. The goats have been sold and the location dropped from the program.

No milk was available from location D-101, January through April and December of 2001.

Goats were dry.

Milk was not available from location D-105 collected July 10, September 5, and September 18, 2001. The location has been dropped from the program.

(2) Air particulates / Air Iodine:

No AP/AI sample was available at location D-15 for the week ending 03-01-01. Run-time of only 40.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months due to power failure. The sample was not analyzed.

Air iodine samples were not available for the week ending 10-18-2001"*. The samples were missed by the laboratory.

The air iodine sample for location D-7 was missing in shipment for the week ending 12 27-01.

- Collection and analysis of at least five air Iodine samples per week is required by the ODAM (Table 6.3-1). The requirement for this week was not met (2) Thermoluminescent Dosimetry:

Data was not available for the second quarter, 2001 from locations D-22, D-41, D-42 and D-83. Both emergency and regular TLDs were missing in the field.

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3.4 Laboratory Procedures The iodine-131 analyses in milk were made using a sensitive radiochemical procedure involving separation of the iodine using an ion-exchange method, solvent extraction and subsequent beta counting.

Gamma-spectroscopic analyses were performed with HPGe detectors. Levels of iodine-131 in vegetation were determined by gamma spectroscopy. Concentrations of airborne iodine-131 in charcoal samples were also determined by gamma spectroscopy.

Tritium was determined by liquid scintillation.

Analytical Procedures used by Environmental, Inc. are on file and are available for inspection.

Procedures are based6n those Prescribed by the Health and Safety Laboratory of the U.S. Dep't of Energy, Edition 28, 1997, U.S. Environmental Protection Agency for Measurement of Radioactivity in Drinking Water, 1980, and the U.S. Environmental Protection Agency, EERF, Radiochemical Procedures Manual, 1984.

Environmental, Inc., Midwest Laboratory has a comprehensive quality control/quality assurance program designed to assure the reliability of data obtained. Details of the QA Program are presented elsewhere (Environmental, Inc., Midwest Laboratory, 2000 ). The QA Program includes participation in Interlaboratory Comparison (crosscheck) Programs. Results obtained in the crosscheck programs are presented in Appendix A.

3.5 Program Modifications The milk location, D-93 was dropped from the program in December, 2001. The dairy goats were sold.

The control location for milk, D-105 was dropped from the program in September, 2001. A replacement dairy (D-108) has been added.

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4.0 RESULTS AND DISCUSSION All collections and analyses were made as scheduled, except for the listing in Table 5.6.

Results are summarized in Table 5.7 as recommended by the Nuclear Regulatory Commission. For each type of analysis and sample medium, the table lists the mean and range of all indicator and control locations, as well as that location with the highest mean and range.

The tabulated results of all measurements are not included in this section, although references to these results will be made in the discussion. A complete tabulation of results for 2000 is contained in Part II of the Annual Report on the Radiological Environmental Monitoring Program for the Duane Arnold Energy Center.

4.1 Atmospheric Nuclear Detonations and Nuclear Accidents There were no reported atmospheric nuclear tests in 2001.

4.2 Program Findings Results obtained show background levels of radioactivity in the environmental samples collected in 2001.

Airborne Particulates The average annual gross beta concentrations in airborne particulates were identical at both indicator and control locations (0.026 pCi/m 3 ) and similar to levels observed from 1985 through 2000. The results are tabulated below. The data for 1986 does not include the results from May 19 to June 9, 1986, which were influenced by the accident at Chernobyl.

Year Indicators Controls Year Indicators Controls Concentration ( pCi/m 3 ) Concentration ( pCi/m 3 )

1985 0.024 0.024 1994 0.023 0.024 1986 0.024 0.024 1995 0.025 0.024 1987 0.024 0.026 1996 0.024 0.023 1988 0.026 0.028 1997 0.023 0.023 1989 0.026 0.029 1998 0.024 0.024 1990 0.022 0.024 1999 0.026 0.027 1991 0.023 0.022 2000 0.026 0.027 1992 0.022 0.023 2001 0.026 0.026 1993 0.022 0.023 Average annual gross beta concentrations in airborne particulates.

Gamma spectroscopic analysis of quarterly composites of air particulate filters yielded similar results for indicator and control locations. Beryllium-7, which is produced continuously in the upper atmosphere by cosmic radiation (Arnold and AI-Salih, 1955), was detected in all samples.

All other gamma-emitting isotopes were below their respective LLD limits. No effect from plant operation is indicated.

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Airborne Iodine Weekly levels of airborne iodine-131 were below the lower limit of detection (LLD) of 0.07 pCi/m3 in all samples.

Ambient Radiation (TLDs)

At twelve air sampling locations, the TLD readings averaged 15.5 and 14.2 mR/quarter for indicator and control locations, respectively. At locations within a half mile, one mile and three mile radius of the stack, measurements averaged 17.1 mR/quarter, 17.6 mR/quarter and 14.9 mR/quarter, respectively. The average for all locations was 16.2 mR/quarter. This is lower than the estimated average natural background radiation for Middle America, 19.5 mR/quarter, which is based on data on Pages 71 and 108 of the report, "Natural Background Radiation in the United States" (National Council on Radiation Protection and Measurements, 1975). The terrestrial absorbed dose (uncorrected for structural and body shielding) ranges from 8.8 to 18.8 mrad/quarter and averages 11.5 mrad/quarter for Middle America. Cosmic radiation and cosmogenic radionuclides contribute 8.0 mrad/quarter for a total average of 19.5 mrad/quarter.

No plant effect is indicated.

Precipitation In precipitation, the tritium concentration was below the LLD of 330 pCi/L in all samples. No gamma-emitting isotopes were detected. No plant effect is indicated.

Milk Iodine-1 31 results were below the detection limit of 1.0 pCi/L in all samples.

No gamma-emitting isotopes, except naturally occurring potassium-40, were detected in any milk samples. This is consistent with the finding of the National Center for Radiological Health that most radiocontaminants in feed do not find their way into milk due to the selective metabolism of the cow. The common exceptions are radioisotopes of potassium, cesium, strontium, barium, and iodine (National Center for Radiological Health, 1968).

In summary, milk data for 2001 show no radiological effects of plant operation.

Ground Water The annual mean for gross beta activity measured 3.4 pCi/L and was similar to levels observed from 1980 through 2000. The location with the highest mean (6.7 pCi/L) was D-58, a farm 1.0 mile distant from the plant. Tritium was below the LLD of 330 pCi/L in all samples. No effect from plant operation is indicated.

Veqetation Iodine-131 concentrations in broadleaf vegetation were below the LLD level of 0.042 pCi/g wet weight in all samples.

Except for potassium-40, which was observed in all vegetation samples ( broadleaf, grain, and forage ), all other gamma-emitting isotopes were below detection limits in all samples. No effect from plant operation is indicated.

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Soil Strontium-90 was detected in one sample from location D-15 and measured 0.026 pCi/g dry weight, less than half the activity detected in 1990. Cesium-137 activity averaged 0.17 pCi/g dry weight. Both strontium-90 and cesium-137 activities are similar to or less than levels observed from 1988 through 2000, these levels are generally attributable to deposition of fallout from previous decades.

Naturally-occurring potassium-40 averaged 12.08 pCi/g dry weight. No effect from plant operation is indicated.

Surface Water Concentrations of tritium measured below the LLD level of 330 pCi/L in all samples. All gamma-emitting isotopes were below their respective LLDs.

Potassium-40 was measured at one location, D-107 (sewage effluent). The concentration ranged from 8.7-30.3 pCi/L and averaged 20.0 pCi/L.

No plant effect on surface water is indicated.

Fish All gamma-emitting isotopes, except naturally-occurring potassium-40, in edible portions were below detection limits. The potassium-40 level was similar at both indicator and control locations (3.00 and 2.81 pCi/g wet, respectively). No plant effect on fish is indicated.

River Sediments River sediments were collected in May and September, 2001, and analyzed for gamma emitting isotopes. Co-60 was detected in one sample from location D-107 (sewage effluent) at a concentration of 0.036 pCi/g dry weight. Traces of Cesium-137 were detected at both indicator and control locations, at concentrations of 0.030 and 0.029 pCi/g dry, respectively, similar to concentrations observed from 1988 through 2000. Potassium 40 activity ranged from 5.51-7.99 pCi/g dry weight and averaged 6.89 pCi/g dry weight.

All other gamma-emitting isotopes were below detection limits.

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5.0 TABLES AND FIGURES 10

Table 5.1 Characteristic properties of isotopes quantified in gamma-spectroscopic analyses.

Designation Comment Isotope Half-lifea

1. Naturally Occurring A. Cosmogenic Produced by interaction of cosmic Be-7 53.2 d rays with atmosphere B. Terrestrial Primordial K-40 1.26 x 10 9 y I1. Fission Productsb Nuclear detonations constitute the major environmental source A. Short-lived 1-131 8.04 d Ba-140 12.8 d B. Other than Short-lived Nb-95 35.15 d Zr-95 65 d Ru-103 39.35 d Ru-106 368.2 d Cs-1 34 2.061 y Cs-137 30.174 y Ce-141 32.5 d Ce-144 284.31 d Ill. Activation Products Typically found in nuclear power plant Mn-54 312.5 d effluents Fe-59 45.0 d Co-58 70.78 d Co-60 5.26 y Zn-65 245 d a Half-lives are taken from Appendix E of Environmental Quarterly, 1 January 1978, EML-334 (U. S. Department of Energy, 1978).

b Includes fission-product daughters.

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Table 5.2 Sample collection and analysis program.

Sampling Location Exposure Pathway and/or Sample Description Sampling and Collection Type and Frequency Sample Type Point Frequency of Analysis Airborne 1 Cedar Rapids (C) Continuous operation of Analyze for gross beta activity Particulates 2 Marion (C) sampler with sample more than 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months after filter 3 Hiawatha collection at least once per change. Perform gamma 5 Palo week or as required by dust isotopic analysis on each sample 6 Center Point loading having gross beta activity greater 7 Shellsburg than ten times the yearly mean 8 Urbana of the control samples.

10 Atkins 11 Toddville Composite weekly samples to 13 Albumett (C) form a quarterly composite (by 15 On-site North location). Analyze quarterly 16 On-site South composite for gamma isotopic.

Airborne Iodine 2 Marion (C) Continuous operation of Analyze each cartridge for 5 Palo sampler with sample iodine-131.

7 Shellsburg collection at least once per 8 Urbana week.

11 Toddville 15 On-site North Ambient 1-2 (C) Air Particulate Two dosimeters Read gamma radiation dose Radiation 3, 5-8 Locations continuously at each quarterly.

10, 11 location. Both dosimeters 13 (C) are changed at least 15, 16 quarterly.

18-23, Within 0.5 mile of 28-32, Stack 33-42 Within 3.0 miles of Stack 43-48 Within 1.0 mile of 82-86, Stack 91 Surface Water 49 Lewis Access (C) Once per month. Gamma isotopic analyses of 50 Plant Intake (C) each sample (by location).

51 Plant Discharge 99 Pleasant Creek Composite monthly samples to 107 Plant Sewage form quarterly composite (by Dischange location). Analyze quarterly composite for tritium.

(C) denotes control location. All other locations are indicators.

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Table 5.2 Sample collection and analysis program, (continued).

Sampling Location Exposure Pathway and/or Sample Description Sampling and Collection Type and Frequency Sample Type Point Frequency of Analysis Ground 53 Treated Municipal Grab sample at least Gross beta and tritium activity Water Water once per quarter analysis on quarterly sample.

(potable) Inlet to Municipal If gross beta is greater than Water Treatment ten times the yearly mean of System control samples, perform On-slte well gamma isotopic and Sr-89 and Wells off-site and Sr-90 analyses.

57,58 within 4 km of DAEC 72 River 50 Plant Intake (C) At least once every Gamma isotopic analysis of each Sediment 51 Plant Discharge six months. sample.

107 Sewage Effluent Canal Vegetation 16, 57, Farms that raise food Annually at harvest Gamma isotopic analysis of 58, 72, crops time. One sample of edible portions.

93,94, each: grain, green leafy, and forage. At 1-131 analysis on broadleaf 105, 108 least one sample vegetation.

(C) should be broadleaf vegetation.

Fish 49 Cedar River upstream One sample per 6 Gamma isotopic analysis on of DAEC not months (once during edible portions.

influenced by effluent January through July (C) and once during Downstream of DAEC August through 61 in influence of effluent December).

Milkb 105, Control Farm At least once per two During the grazing season:

108 (C) weeks during the Gamma isotopic and iodine-131 grazing season. analyses of each sample.

93, 96, Dairy Farms within 10 At least once per During the non-grazing season:

101 miles of Site month during the Gamma isotopic and iodine-131 non-grazing season. analyses of each sample.

(C) denotes control location. All other locations are indicators.

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Table 5.2 Sample collection and analysis program. (continued).

Sampling Location Exposure Pathway and/or Sample Description Sampling and Collection Type and Frequency Sample Type Point Frequency of Analysis Precipitation On-site Monthly Gamma isotopic on all samples.

Tritium on quarterly composites.

Meatc Ornsite - Annually Gamma Isotopic Soil 15,16 On-site Annually Gamma Isotopic and Sr-90.

a Gamma isotopic analysis and analysis for gamma-emitting nuclides refer to high resolution gamma ray spectrum analysis. Any radionuclide detected at a concentration greater than the lower limit of detection (LLD) should be reported quantitatively; conversely, any radionuclide concentration less than the LLD should not be reported.

b The grazing season is considered to be May 1 through September 30.

c Meat was not collected in 2001; no animals slaughtered for home use.

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Table 5.3 Sampling locations, Duane Arnold Energy Center.

Sampling Location Code Type Sampling Location Description Distance and Direction Point from Site Stack D-1 C 1 Cedar Rapids 11mi@135' SE D-2 C 2 Marion 11mi@125' ESE D-3 3 Hiawatha 7 mi @ 130' SE D-5 5 Palo 3 mi @ 2000 SSW D-6 __ 6 Center Point 7mi@0° N D-7 7 Shellsburg 6 mi @ 2550 W D-8 8 Urbana 10mi @345* NW D-10 10 Atkins 9mi@210* SSW D-11 11 Toddville 4 mi @ 900 E D-13 C 13 Albumett 9 mi @ 70* ENE D-1 5 15 On-site, Northwest 0.5 mi @ 3050 NW D-16 16 On-site, South 0.5 mi @ 1900 SSE D-18 18 On-site, NNE 0.5 mi NNE D-1 9 19 On-site, NE 0.5 mi NE D-20 20 On-site, ENE 0.5 mi ENE D-21 21 On-site, ENE 0.5 mi ENE D-22 22 On-site, E 0.5 mi E D-23 23 On-site, ESE 0.5 mi ESE D-28 28 On-site, WSW 0.5 mi WSW D-29 29 On-site, W 0.5 mi W D-30 30 On-site, WNW 0.5 mi WNW D-31 31 On-site, NW 0.5 mi NW D-32 32 On-site, NNW 0.5 mi NNW D-33 33 3 miles N 3.0 mi N D-34 34 3 miles NNE 3.0 mi NNE D-35 35 3 miles NE 3.0 mi NE D-36 36 3 miles ENE 3.0 mi ENE D-37 37 3 miles E 3.0 mi E D-38 38 3 miles ESE 3.0 m! ESE D-39 39 3 miles SE 3.0 mi SE D-40 40 3 miles SSE 3.0 mi SSE D-41 41 3 miles S 3.0 mi S D-42 42 3 miles SSE 3.0 mi SSE D-43 43 1 mile SSWV 1.0 mi SSW D-44 44 1 mile WSW 1.0 mi WSW D-45 45 I mile W 1.0 mi W D-46 46 1 mile WNW 1.0 mi WNW D-47 47 1 mile WNW 1.0 mi WNW 15

Table 5.3 Sampling locations, Duane Arnold Energy Center (continued).

Sampling Location Code Type Sampling Location Description Distance and Direction Point from Site Stack D-48 48 1 mile NW 1.0 mi NW D-49 C 49 Lewis Access, upstream of DAEC 4.0 mi NNW D-50 C 50 Plant Intake D-51 51 Plant Discharge D-53 53 Treated Municipal Water D-54 54 Inlet, Municipal Water Treatment System D-55 55 On-site Well D-57 57 Farm (Off-site Well) 1.0 mi WSW D-58 58 Farm (Off-site Well) 0.5 mi WSW-SW D-61 61 0.5 mi downstream of plant discharge D-72 72 Farm 2.0 mi SSW D-82 82 On-site, SE 0.5 mi SE D-83 83 On-site, SSE 0.5 mi SSE D-84 84 On-site, S 0.5 mi S D-85 85 On-site, SSW 0.5 mi SSW D-86 86 On-site, SW 0.5 mi SW D-91 91 On-site, N 0.5 mi N D-93 93 Farm 2.8 mi NNE D-94 94 Farm 2.7 mi N D-96 96 Farm 8.0 mi SSW D-99 99 Pleasant Creek Lake 2.5 mi WNW D-101 101 Farm 4.0 mi E

-. 5C 105 Farm 21.3 mi SSW 1 06 106 Farm 4.5 mi SE D-107 107 Sewage Effluent Canal On-site D-108 C 108 Farm 17.3 mi. SW "C" denotes control location. All other locations are indicators.

16

Table 5.4 Type and Frequency of collection.

Location Location Type Weekly Monthly Quarterly Semiannually Annually D-1 C AP TLD D-2 C AP, Al TLD D-3 AP TLD D-5 AR Al TLD D-6 AP TLD D-7 AP, Al TLD D-8 AP, Al TLD D-1 0 AP TLD D-11 AP, Al TLD D-1 3 C AP TLD D-15 AP, Al TLD SO D-16 AP TLD SO, G D-18 to D-23 TLD D-28 to D-42 TLD D-43 to D-48 TLD D-49 C SW F D-50 C SW RS D-51 SW RS D-53 WW D-54 WW D-55 WW D-57 WW G D-58 WW G D-61 F D-63 M G D-72 WW G D-82 to D-86 TLD D-91 TLD D-93 M G D-94 G D-96 M D-99 SW D-101 M D-105 C M G D-106 M G D-107 SW RS D-108 C M G On-site P ME "C" denotes control location. All other locations are indicators.

17

Table 5.5. Sample codes used in 5.4.

Code Description AP Airborne Particulates Al Airborne Iodine TLD Thermoluminescent Dosimeter P Precipitation M Milk WW Well Water G Vegetation ME Meat SO Soil SW Surface Water F Fish RS River Sediment 18

Table 5.6. Missed collections and analyses, Duane Arnold Energy Center.

Sample Collection Date Type Analysis Location(s) or Period Comments MI 1-131, Gamma D-93 12-04-01 Sample not available, goats sold; location dropped from program.

MI 1-131, Gamma D-101 01-09-01 Sample not available; goat dry.

MI 1-131, Gamma D-101 02-06-01 Sample not available; goat dry.

MI 1-131, Gamma D-101 03-06-01 Sample not available; goat dry.

MI 1-131, Gamma D-101 04-03-01 Sample not available; goat dry.

MI 1-131, Gamma D-101 12-04-01 Sample not received; goat dry.

MI 1-131, Gamma D-105 07-10-01 Sample not available; container sent to wrong farm.

MI 1-131, Gamma D-105 09-05-01 Sample not available.

MI 1-131, Gamma D-101 09-18-01 Sample not available; location dropped from program, replaced by D-108.

AP/AI Gross Beta, D-1 5 03-01-01 Power was off from 02-24-01; 1-131 very low volume due to 40.5 hour5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months run.

Al 1-131 D-2, 5, 7, 10-18-01 Analysis for 1-131 missed by the D-8, 11,15 laboratory**.

Al 1-131 D-7 12-27-01 Sample lost in shipment.

TLD Ambient Gamma D-22, D-41, 2nd Qtr., 2001 TLDs missing in the field.

D-42, D-83 Collection and analysis of at least five air Iodine samples per week is required by the ODAM (Table 6.3-1). The requirement for this week was not met 19

Table 5.7 Radiological Environmental Program Summary.

Name of Facility Duane Arnold Energy Center Docket No. 50-331 Location of Facility Linn, Iowa Reporting Period January-December, 2001 (County, State)

Indicator Location with Highest Control Number Sample Type and Locations Annual Mean Locations Non Type Number of LLDb Mean (F)c Mean (F)c Mean (F)c Routine (Units) Analysesa Rangec Locationd Rangec Rangec Resultse Airbome GB 635 0.002 0.026 (476/476) D-1, Cedar Rapids 0.027 (53/53) 0.026 (159/159) 0 Particulates _ (0.006-0.049) 11 mi. SE (0.009-0.058) (0.008-0.058)

(pCi/m") GS 48 Be-7 0.020 0.066 (36/36) D-10, Atkins 0.073 (4/4) 0.065 (12/12) 0 (0.045-0.096) 9 mi. SSW (0.058-0.096) (0.054-0.079)

Nb-95 0.0018 < LLD < LLD 0 Zr-95 0.0078 < LLD < LLD 0 Ru-1 03 0.0015 < LLD < LLD 0 Ru-106 0.0091 < LLD < LLD 0 Cs-134 0.0009 < LLD < LLD 0 Cs-1 37 0.0009 < LLD < LLD 0 Ce-141 0.0027 < LLD < LLD 0 Ce-144 0.0073 < LLD < LLD 0 Airborne Iodine 1-131 628 0.030 < LLD < LLD 0 (pCi/ma)

TLD, AP Locations Gamma 48 1.0 15.5 (36/36) D-8, Urbana 19.0 (4/4) 14.2 (12/12) 0 (mR/quarter) (11.4-21.8) 10 mi. NW (16.1-21.8) (12.1-18.5)

TLD, within 0.5 mi. of Stack Gamma 66 1.0 17.1 (66/66) D-31, On-site 22.2 (4/4) None 0 (mR/quarter) (13.2-24.6) 0.5 mi. NW (20.4-24.6)

TLD, within 1.0 mi. of Stack Gamma 24 1.0 17.6 (24/24) D-44 19.2 (4/4) None 0 (mR/quarter) (13.2-22.8) 1 mi. WSW (16.7-21.8)

TLD, within 3.0 mi. of Stack Gamma 38 1.0 14.9 (38/38) D-37, 18.2 (4/4) None 0 (mR/quarter) (11.4-20.7) 3 mi. E (15.9-20.7)

Precipitation (pCi/L) H-3 4 330 < LLD - < LLD 0 GS 12 Mn-54 7.2 < LLD - - < LLD 0 Fe-59 11.6 < LLD - - < LLD 0 Co-58 5.9 < LLD - - < LLD 0 Co-60 7.1 < LLD - - < LLD 0 Zn-65 11.3 < LLD - - < LLD 0 Nb-95 7.6 < LLD - - < LLD 0 20

Table 5.7 Radiological Environmental Program Summary.

Name of Facility Duane Arnold Energy Center Docket No. 50-331 Location of Facility Linn, Iowa Reporting Period January-December, 2001 (County, State)

Indicator Location with Highest Control Number Sample Type and Locations Annual Mean Locations Non Type Number of LLDb Mean (F)c Mean (F)c Mean (F)c Routine Analysesa Rangec Locationd Rangec Rangec Resultse (Units)

Precipitation Zr-95 13.9 < LLD - < LLD 0 (pCi/L) 1-131 50:0- < LLD - < LLD 0 (continued) Cs-134 8.5 < LLD - < LLD 0 Cs-137 9.7 < LLD - - < LLD 0 Ba-140 47.0 < LLD - - < LLD 0 La-140 12.0 < LLD - - < LLD 0 Milk (pCi/L) 1-131 60 0.5 < LLD - - < LLD 0 GS 60 K-40 100 1490 (45/45) D-93, Farm 1673 (16/16) 1384 (15/15) 0 (1060-1865) 2.8 mi. NNE (1300-1865) (1234-1543)

Cs-134 15 < LLD - - < LLD 0 Cs-137 18 < LLD - -< LLD 0 Ba-140 60 < LLD - - < LLD 0 La-140 15 < LLD - - < LLD 0 Ground Water GB 24 1.1 3.4 (17/24) D-58, Farm 6.7(4/4) None 0 (pCi/L) (1.3-8.6) 1 mi. WSW-SW (5.6-8.6)

H-3 24 330 < LLD < LLD 0 Broadleaf 1-131 2 0.042 < LLD < LLD 0 Vegetation (pCi/g wet) GS 2 K-40 0.5 4.11 (1/1) D-94, Farm 4.11 (1/1) 3.38 (1/1) 0 2.7 mi. N Mn-54 0.034 < LLD - - < LLD 0 Co-58 0.032 < LLD - - < LLD 0 Co-60 0.024 < LLD - - < LLD 0 Nb-95 0.042 < LLD - -< LLD 0 Zr-95 0.074 < LLD - < LLD 0 Ru-103 0.034 < LLD - < LLD 0 Ru-106 0.39 < LLD - < LLD 0 Cs-134 0.014 < LLD - < LLD 0 Cs-1 37 0.031 < LLD - < LLD 0 Ce-141 0.046 < LLD - < LLD 0 Ce-144 0.11 < LLD - < LLD 0 21

Table 5.7 Radiological Environmental Program Summary.

Name of Facility Duane Arnold Energy Center Docket No. 50-331 Linn, Iowa Reporting Period January-December, 2001 Location of Facility (County, State)

Indicator Location with Highest Control Number Sample Type and Locations Annual Mean Locations Non Type Number of LLDb Mean (F)c Mean (F)c Mean (F)c Routine 8 Rangec Resultse (Units) Analysesa Rangec Location Rangec Vegetation GS 9 (Grain) K-40 0.50-- 7.32(7/7) D-72, Farm 11.18 (2/2) 4.91 (212) 0 (pCi/g wet) 2 mi. SSW Mn-54 0.068 < LLD - - < LLD 0 Co-58 0.077 < LLD - - < LLD 0 Co-60 0.046 < LLD - - < LLD 0 Nb-95 0.077 < LLD - - < LLD 0 Zr-95 0.15 < LLD - - < LLD 0 Ru-1 03 0.067 < LLD - -< LLD 0 Ru-106 0.55 < LLD - - < LLD 0 Cs-134 0.042 < LLD - - < LLD 0 Cs-137 0.070 < LLD - - < LLD 0 Ce-141 0.14 < LLD - - < LLD 0 Ce-144 0.40 < LLD - - < LLD 0 Soil Sr-90 2 0.01 0.026(1/1) D-15, On-site 0.026 (1/1) None 0 (pCi/gwet) (0.026-0.026) 0.5 mi. NW GS 2 K-40 0.5 12.08(2/2) D-15, On-site 15.31 (1/1) None 0 (8.85-15.31) 0.5 mi. NW Mn-54 0.036 < LLD - - None 0 Fe-59 0.092 < LLD - - None 0 Co-58 0.024 < LLD - - None 0 Co-60 0.018 < LLD - - None 0 Zn-65 0.094 < LLD - - None 0 Nb-95 0.023 < LLD - - None 0 Zr-95 0.059 < LLD - - None 0 Ru-1 03 0.030 < LLD - - None 0 Ru-1 06 0.31 < LLD - - None 0 Cs-134 0.049 < LLD - - None 0 Cs-137 0.060 0.17(212) D-15, On-site 0.17 (1/1) None 0 (0.16-0.17) 0.5 mi. NW Ce-141 0.052 < LLD - None 0 Ce-144 0.19 < LLD I None 0 22

Table 5.7 Radiological Environmental Program Summary.

Name of Facility Duane Amold Energy Center Docket No. 50-331 Location of Facility Unn, Iowa Reporting Period January-December, 2001 (County, State)

Indicator Location with Highest Control Number Sample Type and Locations Annual Mean Locations Non Type Number of LLDb Mean (F)c Mean (F)c Mean (F)c Routine (Units) Analyses3 Rangec Locationd Rangec Range' Resultse Surface Water H-3 20 330 < LLD < LLD 0 (pCi/L) K-40 12 -0.5 20.03-(12/12) D-107, Onsite 20.03 (12/12) None 0 Sewage Effluent (8.65-30.3) 0 1-131 60 15 < LLD - - < LLD 0 GS 60 Mn-54 15 < LLD -< LLD 0 Fe-59 30 < LLD - -< LLD 0 Co-58 15 < LLD - - < LLD 0 Co-60 15 < LLD - - < LLD 0 Zn-65 30 < LLD - - < LLD 0 Nb-95 15 < LLD - - < LLD 0 Zr-95 30 < LLD - -< LLD 0 Cs-134 15 < LLD - - < LLD 0 Cs-137 15 < LLD - - < LLD 0 Ba-140 60 < LLD - - < LLD 0 La-140 15 < LLD - - < LLD 0 Sediments GS 6 (pCi/g dry) K-40 1.0 6.89 (4/4) D-50, 7.75(2/2) 7.75(2/2) 0 (5.51-7.99) Plant Intake (7.59-7.90) (7.59-7.90)

Mn-54 0.027 < LLD < LLD 0 Fe-59 0.047 < LLD < LLD 0 Co-58 0.018 < LLD < LLD 0 Co-60 0.022 0.036 (1/4) D-107, Sewage 0.036 (1/1) < LLD 0 Effluent Canal Zn-65 0.043 < LLD - - < LLD 0 Nb-95 0.037 < LLD - - < LLD 0 Zr-95 0.042 < LLD - - < LLD 0 Ru-1 03 0.024 < LLD - - < LLD 0 Ru-106 0.13 < LLD - - < LLD 0 Cs-134 0.025 < LLD - - < LLD 0 Cs-137 0.020 0.030(2/4) D-51, 0.030(2/2) 0.029(1/1) 0 (0.027-0.033) Plant Discharge (0.027-0.033)

Ce-141 0.055 < LLD < LLD 0 Ce-144 0.12 < LLD < LLD 0 23

Table 5.7 Radiological Environmental Program Summary.

Name of Facility Duane Arnold Energy Center Docket No. 50-331 Location of Facility Linn, Iowa Reporting Period January-December, 2001 (County, State)

Indicator Location with Highest Control Number Sample Type and Locations Annual Mean Locations Non Type Number of LLDb Mean (F)c Mean (F)c Mean (F)c Routine Rangec Locationd Rangec Rangec Resultse (Units) Analysesa Fish GS 8 (pCi/g wet) K-40 1.0-- 3.00-(4/4) D-61, 3.00 (4/4) 2.81 (4/4) 0 (2.96-3.04) Downstream (2.96-3.04) (2.10-3.34)

Mn-54 0.019 < LLD - -< LLD 0 Fe-59 0.046 < LLD - - < LLD 0 Co-58 0.018 < LLD - - < LLD 0 Co-60 0.016 < LLD - - < LLD 0 Zn-65 0.047 < LLD - - < LLD 0 Nb-95 0.023 < LLD - - < LLD 0 Zr-95 0.035 < LLD - -< LLD 0 Ru-103 0.017 < LLD - - < LLD 0 Ru-106 0.14 < LLD - -< LLD 0 Cs-134 0.027 < LLD - - < LLD 0 Cs-137 0.018 < LLD - - < LLD 0 Ce-141 0.032 < LLD - -< LLD 0 Ce-144 0.10 < LLD < LLD 0 a GB = Gross beta; GS = Gamma spectroscopy b LLD = Nominal lower limit of detectionbased on 4.66 sigma counting error for the background sample.

c Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (F).

SLocations are specified by: (1) Name and code (Table 5.3); and (2) distance, direction and sector relative to reactor site.

e Non-routine results are those which exced ten times the control station value for the location. If a control station value is not available, the result is considered non-routine if it exceeds ten times the preoperational value for the location.

24

Figure 5.1 Radiological Environmental Monitoring Program Sampling Stations near the Duane Arnold Energy Center.

Refer to Table 5.3 for sampling locations and Table 5.4 for Type and Frequency of collection.

25

Figure 5.2 Radiological Environmental Monitoring Program Sampling Stations Outside 0.5 miles from the Duane Arnold Energy Center Refer to Table 5.3 for sampling locations and Table 5.4 for Type and Frequency of collection.

26

6.0 REFERENCES

CITED Arnold, J. R. and H. A. AI-Salih. 1955. Beryllium-7 Produced by Cosmic Rays. Science 121: 451-453.

Eisenbud, M. 1963. Environmental Radioactivity, McGraw-Hill, New York, New York, pp. 213, 275 and 276.

Environmental, Inc., Midwest Laboratory. 2001. Environmental Radiological Monitoring Program for the Duane Arnold Energy Center, Annual Report - Part II, Data Tabulations and Analyses, January December, 2000.

Environmental, Inc., Midwest Laboratory. 2002a. Environmental Radiological Monitoring Program for the Duane Arnold Energy-Center, Annual Report - Part 11,Data Tabulations and Analyses, January December, 2001.

2001. Quality Assurance Program Manual, Rev. 0, 11 October 2000.

2001. Quality Control Procedures Manual, Rev. 0, 21 September 2000.

2001. Quality Control Program, Rev. 0, 12 October 2000.

Gold, S., H. W. Barkhau, B. Shlein, and B. Kahn, 1964. Measurement of Naturally Occurring Radionuclides in Air, in the Natural Environment, University of Chicago Press, Chicago, Illinois, 369-382.

Hazleton Environmental Sciences . 1982 - 1984. Environmental Radiation Monitoring for the Duane Arnold Arnold Energy Center, Annual Report - Part II, Data Tabulations and Analyses, January December 1981 - 1983.

Hohenemser, C. M. Deicher, A. Ernst, H. Hofsass, G. Lindner, E. Racknagel. 1986. "Chernobyl,"

Chemtech, October 1986, pp. 596-605.

National Center for Radiological Health, 1968. Radiological Health and Data Reports, Vol. 9, Number 12, 730-746.

Teledyne Brown Engineering Environmental Services, Midwest Laboratory. 1984 - 2000. Environmental Radiological Monitoring Program for the Duane Arnold Energy Center, Annual Report - Part II, Data Tabulations and Analyses, January - December, 1983 - 1999.

Wilson, D. W., G. M. Ward and J. E. Johnson. 1969. In Environmental Contamination by Radioactive Materials, International Atomic Energy Agency. p.125.

27

-. Environmental, Inc.

Mdwest Laboratory an Alegheny Technodogis Co.

700LadwehrRoad NotlhbrookIL 60D62.2 (847)564-0700 fax (847) 564-4517 APPENDIX A INTERLABORATORY COMPARISON PROGRAM RESULTS NOTE: Environmental Inc., Midwest Laboratory participates in intercomparison studies administered by Environmental Resources Associates, and serves as a replacement for studies conducted previously by the U.S. EPA Environmental Monitoring Systems Laboratory, Las Vegas, Nevada. Results are reported in Appendix A. TLD Intercomparison results, in-house spikes, blanks, duplicates and mixed analyte performance evaluation program results are also reported. Appendix A is updated four times a year; the complete Appendix is included in March, June, September and December monthly progress reports only.

January through December, 2001

Appendix A Interlaboratory Comparison Program Results Environmental, Inc., Midwest Laboratory, formerly Teledyne Brown Engineering Environmental Services Midwest Laboratory has participated in interlaboratory comparison (crosscheck) programs since the formulation of it's quality control program in December 1971. These programs are operated by agencies which supply environmental type samples (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 a laboratory's analytical procedures and to alert it of any possible problems.

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

The results in Table A-1 were obtained through participation in the environmental sample crosscheck program for milk, water and air filters during the past twelve months. Data for previous years is available upon request.

This program was conducted by the U.S. Environmental Protection Agency Office of Research and Development National Exposure Research Laboratory Characterization Research Division-Las Vegas, Nevada.

The results in Table A-2 were obtained for Thermoluminescent Dosimeters (TLDs), via various International Intercomparisons of Environmental Dosimeters under the sponsorships listed in Table A-2. Results of crosscheck testing with Teledyne Brown Engineering are also listed.

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

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

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

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

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

Attachment A lists acceptance criteria for "spiked" samples.

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

Al

Attachment A ACCEPTANCE CRITERIA FOR "SPIKED" SAMPLES LABORATORY PRECISION: ONE STANDARD DEVIATION VALUES FOR VARIOUS ANALYSESa One standard deviation Analysis Level for single determinations Gamma Emitters 5 to 100 pCi/liter or kg 5.0 pCi/liter

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

> 50 pCi/liter or kg 10% of known value Strontium-90b 2 to 30 pCi/liter or kg 5.0 pCi/liter

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

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

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

0 0 933 169.85 x (known)

> 4,000 pCi/liter 10% of known value Radium-226,-228 0.1 pCi/liter 15% of known value Plutonium 0.1 pCi/liter, gram, or sample 10% of known value Iodine-1 31, 55 pCi/liter 6.0 pCi/liter Iodine-1 2 9 b > 55 pCi/liter 10% of known value Uranium-238, 35 pCi/liter 6.0 pCi/liter Nickel-63b > 35 pCi/liter 15% of known value Technetium-99b Iron-55b 50 to 100 pCi/liter 10 pCi/liter

> 100 pCi/liter 10% of known value Othersb 20% of known value "aFrom EPA publication, "Environmental Radioactivity Laboratory Intercomparison Studies Program, Fiscal Year, 1981-1982, EPA-600/4-81-004.

b Laboratory limit.

A2

TABLE A-1. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA)a.

Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Resultb Resultc Limits STW-897 01/24/01 Gr. Alpha 31.9 -2.1 45.7 - 11.4 25.9 - 65.5 Gr. Beta 25.3 - 2.7 16.7 -5.0 8.0 -25.4 STW-897 01/24/01 1-131 27.2 - 0.8 28.3 - 3.0 23.1 - 33.5 STW-900 02/08/01 Ra-226 4.0 -0.1 4.7 - 0.7 3.4 - 5.9 STW-902 02/21/01 Ra-228 13.8 -0.4 14.4 -3.6 8.2 - 20.6 STW-902 02/21/01 Uranium 17.0 -0.3 20.4 -3.0 15.2 - 25.6 STW-902 02/21/01 H-3 17400.0 - 69.7 17800.0 - 1780.0 14700.0 -20900.0 STW-903 03/07/01 Gr. Alpha 57.4 - 3.5 56.0 - 14.0 31.8 - 80.2 STW-917 04/18/01 Ra-226 13.5 -0.4 17.7 -2.7 13.1 -22.3 STW-917 04/18/01 Ra-228 10.1 -0.6 8.1 -2.0 4.6 -11.6 STW-917 04/18/01 Uranium 14.2 -0.2 15.6 -3.0 10.4 - 20.8 STW-917 04/18/01 Co-60 27.9 - 1.4 26.4 - 5.0 17.7 -35.1 STW-918 04/18/01 Cs-1 34 16.0 -0.4 16.9 -5.0 8.2 - 25.6 STW-918 04/18/01 Cs-1 37 195.4 - 1.5 186.0 -9.3 170.0 - 202.0 STW-918 04/18/01 Gr. Beta 343.0 -1.7 340.0 -51.0 252.0 - 428.0 STW-918 04/18/01 Sr-89 62.8 - 5.7 64.1 - 5.0 55.5 - 72.8 STW-918 04/18/01 Sr-90 34.2 - 1.6 33.8 - 5.0 25.1 -42.5 STW-918 04/18/01 Ba-133 37.8 - 1.2 36.0 - 5.0 27.3 - 44.7 STW-919 06/04/01 Co-60 49.9 - 0.7 46.8 - 5.0 38.1 -55.5 STW-919 06/04/01 Cs-134 16.0 - 1.4 15.9 - 5.0 7.2 - 24.6 STW-919 06/04/01 Cs-1 37 208.0 - 1.7 197.0 -9.9 180.0 - 214.0 STW-919 06/04/01 Zn-65 37.8 - 0.7 36.2 - 5.0 27.5 - 44.9 STW-919 06/04/01 Ra-226 14.6 -0.4 15.4 -2.3 11.4-19.4 STW-920 06/13/01 Ra-228 6.2 -0.2 4.5 - 1.1 2.6 - 6.5 STW-920 06/13/01 Uranium 49.0 - 1.0 55.7 - 5.6 46.1 - 65.3 STW-920 06/13/01 Sr-89 19.8 - 1.5 31.2 -5.0 22.5 - 39.9 STW-921 d 07/11/01 Sr-90 26.3 - 1.1 25.9 - 5.0 17.2 - 34.6 STW-921 07/11/01 Gr. Alpha 23.3 -1.9 17.8 -5.0 9.1 -26.5 STW-922 07/16/01 Gr. Beta 48.5 -4.6 53.0 -10.0 35.7 - 70.3 STW-922 07/16/01 H-3 2680.0 - 41.9 2730.0 - 356.0 2110.0 - 3350.0 STW-924 08/08/01 Ra-226 10.9 -0.2 10.8 - 1.6 8.0 - 13.6 STW-931 09/26/01 Ra-228 9.7 - 1.1 9.0 -2.2 5.1 -12.8 STW-931 09/26/01 Uranium 11.2 -0.1 13.1 -3.0 7.9 - 18.3 STW-931 09/26/01 1-131 7.7 - 0.3 7.7 -2.0 4.2-11.2 STW-932 10/04/01 Gr. Alpha 82.2 - 4.0 97.5 - 24.4 55.3 - 140.0 STW-933 10/18/01 Ra-226 9.5 - 1.2 10.8 -1.6 8.0 - 13.6 STW-933 10/18/01 Ra-228 17.0 -0.8 15.6 -3.9 8.9 -22.4 STW-933 10/18/01 Uranium 32.2-1.4 37.2 - 3.7 30.7 -43.6 STW-933 10/18/01 10/18/01 Co-60 82.4 -0.9 78.4 -5.0 69.7 - 87.1 STW-934 Cs- 134 52.2 - 1.3 54.1 -5.0 45.4 - 62.8 STW-934 10/18/01 Cs-137 39.4 -0.6 37.9 - 5.0 26.3 - 43.7 STW-934 10/18/01 Gr. Beta 166.0 -7.1 192.0 -28.8 142.0 - 242.0 STW-934 10/18/01 Sr-89 12.8 -0.8 16.7 -5.0 8.0 -25.4 STW-934 10/18/01 Sr-90 6.8 - 0.7 7.7 - 5.0 -1.0-16.4 STW-934 10/18/01 Al-1

TABLE A-1. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA)a.

Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Resultb Resultc Limits STW-935 10/22/01 Gr. Alpha 63.5 - 2.5 64.0 - 16.0 36.5 -91.5 10/22/01 Gr. Beta 26.0 - 1.2 21.5 -5.0 12.8 - 30.2 STW-935 STW-938 11/14/01 Ba-133 66.7 - 1.2 69.3 - 6.9 57.5 -81.1 STW-938 11/14/01 Co-60 59.3 - 0.6 59.7 - 5.0 51.0 - 68.4 11/14/01 Cs-134 86.7 - 1.5 93.9 - 5.0 85.2 - 103.0 STW-938 STW-938 11/14/01 Cs-1 37 45.0 - 1.0 42.0 - 5.0 33.3 - 50.7 STW-938 11/14/01 Zn-65 80.7 - 0.6 77.3 - 7.7 63.9 - 90.7 a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the environmental samples crosscheck program operated by Environmental Resources Associates (ERA).

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

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

d 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.

Al -2

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

mR Lab Code TLD Type Date Measurement Known Lab Result Control Value +/- 2 sigma Limits Teledyne Brown Engineering 2000-1 LiF-100 Chips 3/14/2000 Reader 1, #1 17.8 14.43 +/- 0.2 12.46 +/- 23.1 Reader 1, #2 35.5 32.39 +/- 0.1 24.85 +/- 46.2 2000-1 LiF-100 Chips 3/14/2000 Reader 1, #3 62.2 61.84 +/- 0.9 43.54 +/- 80.9 2000-1 LiF-100 Chips 3/14/2000 Teledyne Brown Engineerinq 3/14/2000 Reader 1, #1 17.8 21.29 +/- 0.3 12.46 +/- 23.1 2000-2 CaSO4: Dy Cards Reader 1, #2 35.5 40.12 +/- 1.9 24.85 +/- 46.2 2000-2 CaSO4: Dy Cards 3/14/2000 Reader 1, #3 62.2 69.94 +/- 3.5 43.54 +/- 80.9 2000-2 CaSO4: Dy Cards 3/14/2000 12th International Intercomparison 161 184.9 +/- 1.9 112.7 +/- 209.3 022-1 CaSO4: Dy Cards 6/15/2000 Field Field 1 548 502.2 +/- 1.7 383.6 +/- 712.4 022-1 CaSO4: Dy Cards 6/15/2000 Field 2 391 412 +/- 2.9 273.7 +/- 508.3 022-1 CaSO4: Dy Cards 6/15/2000 Field 3 623 643.2 +/- 2.9 436.1 +/- 809.9 022-1 CaSO4: Dy Cards 6/15/2000 391 442.8 +/- 2.5 273.7 +/- 508.3 022-1 CaSO4: Dy Cards 6/15/2000 Lab, 1 The 12th International Intercomparison of Environmental Dosimeters was conducted at the Brookhaven National Laboratory, Upton, New York, and cosponsored by the DOE, Environmental Measurements Laboratory.

Environmental, Inc.

CaSO4: Dy Cards 12/24/2001 Reader 1 #1 3.98 3.71 +/- 0.1 2.8 +/- 5.2 2001-1 2.8 +/- 5.2 12/24/2001 Reader 1 #1 3.98 3.38 +/- 0.1 2001-1 CaSO4: Dy Cards 4.9 +/- 9.2 12/24/2001 Reader 1 #2 7.07 7.89 +/- 0.2 2001-1 CaSO4: Dy Cards 4.9 +/- 9.2 12/24/2001 Reader 1 #2 7.07 7.64 +/- 0.3 2001-1 CaSO4: Dy Cards 11.1 +/- 20.7 12/24/2001 Reader 1 #3 15.9 18.62 +/- 0.4 2001-1 CaSO4: Dy Cards 11.1 +/- 20.7 12/24/2001 Reader 1 #3 15.9 19.58 +/- 0.1 2001-1 CaSO4: Dy Cards 44.5 +/- 82.7 12/24/2001 Reader 1 #4 63.61 78.24 +/- 1.2 2001-1 CaSO4: Dy Cards 44.5 +/- 82.7 Reader 1 #4 63.61 79.89 +/- 2.5 2001-1 CaSO4: Dy Cards 12/24/2001 A2-1

TABLE A-3. In-House "Spike" Samples Concentration (pCi/L)a Sample Date Analysis Laboratory results Known Control Lab Code Type 2s, n= lb Activity Limitsc Air Filter 01/25/01 Cs-137 1.76 +/- 0.02 1.68 1.01 -2.35 SPAP-477 54549.00 43639.20 - 65458.80 Water 01/25/01 H-3 54702.00 +/- 644.00 SPW-479 69.14 34.57 - 103.71 Water 01/25/01 Gr. Alpha 58.08 +/- 2.79 SPW-481 220.26 198.23 - 242.29 Water 01/25/01 Gr. Beta 213.83 +/- 3.07 SPW-481 69.14 34.57 - 103.71 01/25/01 Gr. Alpha 51.77 +/- 2.18 SPW-482 Water 74.72 +/- 3.14 69.14 34.57 - 103.71 SPW-482 Water 01/25/01 Gr. Alpha 202.48 +/- 2.98 220.26 198.23 - 242.29 SPW-482 Water 01/25/01 Gr. Beta 20.11 +/- 0.34 20.86 14.60 - 27.12 SPW-483 Water 01/25/01 Ra-226 10.55 +/- 2.02 19.43 13.60 - 25.26 SPW-483 d Water 01/25/01 Ra-228 33.53 +/- 3.40 31.13 21.13 -41.13 SPW-485 Water 01/25/01 Co-60 32.80 +/- 2.54 30.81 20.81 - 40.81 SPW-485 Water 01/25/01 Cs-1 34 42.10 +/- 5.60 36.00 26.00 - 46.00 SPW-485 Water 01/25/01 Cs-137 Sr-90 154.34 +/- 3.49 137.66 110.13 - 165.19 SPW-485 Water 01/25/01 8.53 +/- 0.02 7.88 -2.12 - 17.88 SPAP-754 Air Filter 01/25/01 Gr. Beta 3.74 +/- 0.10 4.17 2.50 -5.84 SPW-1037 Water 02/16/01 U-233/4 3.76 +/- 0.22 4.17 2.50 -5.84 SPW-1037 Water 02/16/01 U-233/4 3.84 +/- 0.23 4.17 -7.83 - 16.17 SPW-1037 Water 02/16/01 U-238 3.81 +/- 0.10 4.17 -7.83 - 16.17 SPW-1 037 Water 02/16/01 U-238 21.25 +/- 0.50 20.68 14.48 - 26.88 SPW-1224 Water 02/20/01 Ra-226 30.88 +/- 1.62 34.45 24.12 - 44.79 SPW-1224 Water 02/20/01 Ra-226 21.76 +/- 2.65 19.27 13.49 -25.05 SPW-1224 Water 02/20/01 Ra-228 71.87 +/- 3.07 69.14 34.57 - 103.71 SPW-1225 Water 02/20/01 Gr. Alpha 88.22 +/- 3.07 69.14 34.57 - 103.71 SPW-1 225 Water 02/20/01 Gr. Alpha 36.30 +/- 1.47 28.75 18.75 - 38.75 SPW-1225 Water 02/20/01 Gr. Beta 33.05 +/- 1.51 28.75 18.75 - 38.75 SPW-1225 Water 02/20/01 Gr. Beta 56.82 +/- 0.71 63.05 50.44 - 75.66 SPW-1272 Water 02/26/01 1-131 65.69 +/- 10.21 63.05 53.05 - 73.05 SPW-1 272 Water 02/26/01 1-131(G) 0.80 +/- 0.05 0.76 0.45 - 1.06 Vegetation 02/26/01 1-131(G)

SPVE-1274 0.76 0.45 - 1.06 Vegetation 02/26/01 1-131(G) 0.78 +/- 0.05 SPVE-1274 1.58 0.95 - 2.21 02/26/01 1-131(G) 1.57 +/- 0.05 SPCH-1276 Charcoal 31.89 +/- 4.71 29.77 19.77 - 39.77 SPMI-1270 Milk 03/03/01 Cs-1 34 46.61 +/- 8.81 35.90 25.90 - 45.90 SPMI-1270 Milk 03/03/01 Cs-137 81.92 +/- 10.80 81.95 71.95 - 91.95 SPMI-1270 e Milk 03/03/01 1-131(G)

H-3 51512.00 +/- 1369.00 50189.00 40151.20 - 60226.80 SPU-2901 Urine 03/15/01 H-3 51966.00 +/- 1375.00 50189.00 40151.20 - 60226.80 SPU-2901 Urine 03/15/01 H-3 51152.00 +/- 1365.00 50189.00 40151.20 - 60226.80 SPU-2901 Urine 03/15/01 H-3 50175.00 +/- 1353.00 50189.00 40151.20 -60226.80 SPU-2901 Urine 03/15/01 29.92 +/- 5.13 31.75 22.23 -41.28 SPW-2161 Water 03/27/01 Ra-228 H-3 2065.00 +/- 408.00 2008.00 1317.37 - 2698.63 SPU-3128 Urine 04/25/01 37.94 +/- 2.42 34.57 17.29 - 51.86 SPW-3129 Water 04/25/01 Gr. Alpha 117.83 +/- 2.37 109.46 98.51 - 120.41 SPW-3129 Water 04/25/01 Gr. Beta 0.80 +/- 0.01 0.78 -9.22 - 10.78 SPAP-3508 Air Filter 04/25/01 Gr. Beta 32.69 +/- 6.50 33.96 23.96 - 43.96 SPMI-3232 Milk 04/27/01 Cs-134 44.20 +/- 9.08 35.79 25.79 - 45.79 SPMI-3232 Milk 04/27101 Cs-137 A3-1

1 1.

TABLE A-3. In-House "Spike" Samples Concentration (pCi/L)

Lab Code Sample Date Analysis Laboratory results Known Control Type 2s, n=1b Activity Limitsc Milk 04/27/01 1-131 48.05 +/- 0.90 56.68 45.34 - 68.02 SPMI-3232 46.68 - 66.68 1-131(G) 55.64 +/- 11.39 56.68 SPMI-3232 Milk 04/27/01 Sr-90 143.77 +/- 3.04 136.82 109.46 - 164.18 SPMI-3232 Milk 04/27/01 18.49 +/- 0.21 19.57 9.57 - 29.57 SPSO-3356 Soil 04/27/01 Co-60 Cs-137 18.71 +/- 0.24 16.61 6.61 -26.61 SPSO-3356 Soil 04/27/01 1.80 +/- 0.01 1.67 1.00 -2.34 SPAP-3359 Air Filter 04/27/01 Cs-137 48.17 +/- 4.85 45.19 35.19 -55.19 SPW-3376 Water 04/27/01 Co-60 Cs-1 34 37.14 +/- 3.90 33.96 23.96 - 43.96 SPW-3376 Water 04/27/01 Sr-90 159.84 +/- 3.42 136.82 109.46 - 164.18 SPW-3376 Water 04/27/01 68.60 +/- 2.63 85.02 68.02 - 102.02 SPW-3377 Water 04/27/01 1-131 Gr. Alpha 37.94 +/- 2.42 34.57 17.29 -51.86 SPW-3129/1 Water 05/07/01 Gr. Beta 117.83 +/- 2.37 109.46 98.51 - 120.41 SPW-3129/1 Water 05/07/01 34.42 +/-2.14 34.57 17.29 -51.86 SPW-3129/2 Water 06/13/01 Gr. Alpha Gr. Beta 119.99 +/- 2.45 109.46 98.51 - 120.41 SPW-3129/2 Water 06/13/01 0.81 + 0.03 0.86 0.51 -1.20 SPVE-3303 Vegetation 06/14/01 1-131(G) 17.42 +0.19 19.05 9.05 - 29.05 SPSO-5701 Soil 07/10/01 Co-60 16.03 +/- 0.22 16.52 6.52 - 26.52 SPSO-5701 Soil 07/10/01 Cs-1 37 250.05 +/- 18.63 233.26 209.93 - 256.59 SPW-5779 Water 07/10/01 Co-60 Cs-137 178.68 +/- 19.89 175.91 158.32 - 193.50 SPW-5779 Water 07/10/01 Sr-90 72.12 +/- 2.24 68.12 54.50 -81.74 SPW-5779 Water 07/10/01 1.87 +/- 0.08 1.79 1.07 - 2.51 SPF-5781 Fish 07/10/01 Co-60 Cs-1 37 1.43 +/- 0.07 1.39 0.83 -1.95 SPF-5781 Fish 07/10/01 H-3 51177.00 +/- 631.00 50189.00 40151.20 -60226.80 SPW-5937 water 07/12/01 Ra-226 36.62 +/- 1.74 34.46 24.12 - 44.80 SPW-59441 Water 07/12/01 Ra-228 41.46 +/- 6.44 36.06 25.24 - 46.88 SPW-59441 Water 07/12/01 Cs-137 1.81 +/-0.02 1.67 1.00 - 2.34 SPAP-5703 Air Filter 07/13/01 35.31 +/- 3.04 34.75 17.38 -52.13 SPW-3129/3 Water 07/18/01 Gr. Alpha 113.28 +/- 3,65 109.46 98.51 - 120.41 SPW-3129/3 Water 07/18/01 Gr. Beta Cs-1 37 188.45 +/- 19.10 175.91 158.32 - 193.50 SPMI-6145 Milk 07/20/01 Sr-90 34.90 +/- 1.55 27.25 17.25 - 37.25 SPMI-6145 Milk 07/20/01 Gr. Alpha 35.36 +/- 1.94 34.57 17.29 - 51.86 SPW-6604 Water 07/25/01 Gr. Beta 112.56 +/- 2.46 108.82 97.94 - 119.70 SPW-6604 Water 07/25/01 H-3 48285.00 +/- 606.10 50189.00 40151.20 -60226.80 SPW-9008 Water 10/10/01 1.91 +/- 0.01 1.67 1.00 -2.34 SPAP-901 0 Air Filter 10/10/01 Cs-1 37 U-233/4 40.12 +/- 1.09 41.73 25.04 - 58.42 SPW-10723 Water 12/02/01 U-238 40.16 +/- 1.09 41.73 29.21 - 54.25 SPW-10723 Water 12/02/01 1.58 +/- 0.02 1.56 -8.44 -11.56 SPAP-1 1550 Air Filter 12/27/01 Gr. Beta Co-60 43.82 +/- 3.14 41.36 31.36 -51.36 SPW-11757 Water 12/28/01 Cs-134 24.11 +/- 2.42 22.59 12.59 -32.59 SPW-1 1757 Water 12128/01 Cs-1 37 52.11 +/- 4.40 50.89 40.89 - 60.89 SPW-11757 Water 12/28/01 Cs-1 34 28.03 +/- 2.64 27.10 17.10 - 37.10 SPMI-1 1759 Milk 12/28/01 Cs-1 37 54.59 +/- 5.08 50.89 40.89 - 60.89 SPMI-1 1759 Milk 12/28/01 Cs-1 34 0.94 +/- 0.02 0.90 0.54 -1.26 SPF-11761 Fish 12/28/01 Cs-1 37 1.43 +/- 0.04 1.43 0.86 - 2.00 SPF-1 1761 Fish 12/28/01 A3-2

TABLE A-3. In-House "Spike" Samples Concentration (pCi/L)

Lab Code Sample Date Analysis Laboratory results Known Control Type 2s, n= 1b Activity Limitsc a All results are in pCi/L, except for elemental potassium (K) in milk, which are in mg/L.; air filter samples, which are in pCi/Filter; and food products, which are in mg/kg.

b Results are based on single determinations.

c Control limits are based on Attachment A, Page A2 of this report.

d Sample was lost during analysis. Insufficient sample available to perform reanalysis.

e The Cs-137 spike is suspect; A new cesium spike has been prepared. Reference to SPMI-3232.

NOTE: For fish, Jello is used for the spike matrix. For vegetation, coleslaw is used for the spike matrix.

A3-3

TABLE A-4. In-House "Blank" Samples Concentration (pCi/L)a Analysis Laboratory results (4.66y) Acceptance Lab Code Sample Date LLD Activityb Criteria (4.66 a)

Type Co-60 1.12 100 SPAP-478 Air Filter 01/25/01 100 Cs-134 1.66 SPAP-478 Air Filter 01/25/01 100 Cs-137 2.46 SPAP-478 Air Filter 01/25/01 200 H-3 643.40 SPU-480c Urine 01/25/01 200 H-3 162.00 -1.86 +/- 80.40 SPW-480 Water 01/25/01 1 Gr. Alpha 0.68 SPW-484 Water 041/25/01 3.2 Gr. Beta 1.35 SPW-484 Water 01/25/01 0.03 +/- 0.01 1 Ra-226 0.02 SPW-484 Water 01/25/01 0.43 +/- 0.50 2 Ra-228 0.97 SPW-484 Water 01/25/01 10 Co-60 2.68 SPW-486 Water 01/25/01 10 Cs-134 3.46 SPW-486 Water 01/25/01 10 Cs-1 37 5.43 SPW-486 Water 01/25/01 0.06 + 0.31 1 Sr-90 0.65 SPW-486 Water 01/25/01 0.16 +/- 0.90 3.2 Gr. Beta 1.60 SPAP-755 Air Filter 01/25/01 1 U-238 0.03 SPW-1038 Water 02116/01 1 U-238 0.00 SPW-1038 Water 02/16/01 1 Gr. Alpha 0.46 SPW-1223 Water 02/20/01 3.2 Gr. Beta 1.50 SPW-1223 Water 02/20/01 0.026 +/- 0.011 1 Ra-226 0.02 SPW-1223 Water 02/20/01 0.45 + 0.49 2 Ra-228 0.95 SPW-1223 Water 02/20/01 10 Cs-1 34 5.86 SPMI-1268 Milk 02/26/01 10 Cs-1 37 3.02 SPMI-1268 Milk 02/26/01 20 1-131(G) 7.46 SPMI-1268 Milk 02/26/01 10 Co-60 1.06 SPW-1271 Water 02/26/01 10 Cs-1 34 2.61 SPW-1 271 Water 02/26/01 10 Cs-137 2.37 SPW-1 271 Water 02/26/01 100 Cs-1 34 10.04 SPVE-1273 Vegetation 02/26/01 100 Cs-1 37 6.00 SPVE-1273 Vegetation 02/26/01 9.6 1-131(G) 0.01 SPch-1275 Charcoal 02/26/01 0.050 +/- 0.010 1 Ra-226 0.02 SPW-2164 Water 03/27/01 -66.0 + 335.0 200 H-3 642.00 SPU-3126c Urine 04/25/01 0.042 + 0.38 1 Gr. Alpha 0.54 SPDW-3130 Water 04/25/01 0.67 +/- 1.04 3.2 Gr. Beta 1.46 SPDW-3130 Water 04/25/01 10 Cs-137 2.66 SPMI-3233 Milk 04/27/01 -0.06 +/- 0.14 0.5 1-131 0.26 SPMI-3233 Milk 04/27/01 20 1-131(G) 3.91 SPMI-3233 Milk 04/27/01 -0.32 +/- 0.79 5 Sr-89 0.79 SPMI-3233 Milk 04/27/01 1.18 +/- 0.35 1 04/27/01 Sr-90 SPMI-3233" Milk 100 Cs-1 34 14.77 SPSO-3357 Soil 04/27/01 100 Cs-1 37 11.72 SPSO-3357 Soil 04/27/01 100 Cs-137 0.55 SPAP-3358 Air Filter 04/27/01 10 Co-60 2.90 SPW-3375 Water 04/27/01 10 Cs-1 34 3.71 SPW-3375 Water 04/27/01 20 04/27/01 1-131(G) 0.39 0.024 +/- 0.22

.SPW-3375 Wrater A4-1

1 11 TABLE A-4. In-House "Blank" Samples Concentration (pCi/L)a Lab Code Sample Date Analysis Laboratory results (4.66o) Acceptance Type LLD Activityb Criteria (4.66 a)

SPW-3375 Water 04/27/01 Sr-90 0.56 0.05 +/- 0.27 Water 05/21/01 Gr. Alpha 0.45 0.15 +/- 0.34 1 SPDW-3130 SPDW-3130 Water 05/21/01 Gr. Beta 1.26 0.34 +/- 0.95 Water 06/13/01 Gr. Alpha 0.44 0.09 +/- 0.32 1 SPDW-3130 Water 06/13/01 Gr. Beta 1.46 0.66 +/- 1.04 3.2 SPDW-3130 Vegetation 06/14/01 Co-60 7.06 100 SPVE-3304 SPVE-3304 Vegetation 06/14/01 Cs-1 34 11.56 100 SPVE-3304 Vegetation 06/14/01 Cs-1 37 8.30 100 SPSO-5702 Soil 07/10/01 Co-60 12.80 100 SPSO-5702 Soil 07/10/01 Cs-134 13.96 100 SPSO-5702 Soil 07/10/01 Cs-137 8.10 100 SPAP-5704 Air Filter 07/10/01 Co-60 0.79 100 SPAP-5704 Air Filter 07/10/01 Cs-134 0.84 100 SPAP-5704 Air Filter 07/10/01 Cs-137 0.60 100 SPW-5780 Water 07/10/01 Co-60 1.86 10 07/10/01 Cs-134 2.46 10 SPW-5780 Water Cs-1 37 3.77 10 10 SPW-5780 Water 07/10/01 Fish 07/10/01 Co-60 5.64 100 SPF-5782 Fish 07/10/01 Cs-1 34 7.51 100 SPF-5782 Fish 07/10/01 Cs-1 37 8.90 100 SPF-5782 Water 07/12/01 H-3 163.22 -16.21 +/- 85.07 200 SPW-5938 SPW-59451 Water 07/12/01 Ra-226 0.01 0.041 +/- 0.010 SPW-59451 Water 07/12/01 Ra-228 0.77 0.70 +/- 0.44 2 SPDW-3130 Water 07/18/01 Gr. Alpha 0.54 0.36 +/- 0.40 1 Water 07/18/01 Gr. Beta 2.27 -0.78 +/- 1.35 3.2 SPDW-3130 SPMI-6146d Milk 07/20/01 Sr-90 0.50 1.09 +/- 0.36 1 Water 07/25/01 Gr. Alpha 0.47 0.20 +/- 0.37 1 SPW-6605 SPW-6605 Water 07/25/01 Gr. Beta 1.34 0.55 +/- 1.01 3.2 Water 10/10/01 H-3 160.00 -56.7 +/- 76.50 200 SPW-9009 Air Filter 10/10/01 Co-60 0.76 100 SPAP-901 1 Air Filter 10/10/01 Cs-137 0.58 100 SPAP-9011 Water 10/16/01 Sr-90 0.54 0.36 +/- 0.30 1 SPW-5780 SPW-10724 Water 12/02/01 U-238 0.13 0.042 +/- 0.10 1 SPAP-11549 Air Filter 12/27/01 Gr. Beta 0.00 0.014 +/- 0.002 3.2 SPW-1 1756 Water 12/28/01 Cs-1 37 2.62 10 SPMI-1 1758 Milk 12/28/01 Cs-1 37 4.00 10 SPMI-11758 Milk 12/28/01 1-131 (G) 16.57 20 SPF-1 1760 Fish 12/28/01 Cs-1 37 7.96 100 a Liquid sample results are reported in pCi/Liter, air filters( pCilfilter), charcoal (pCi/charcoal canister), and solid samples (pCi/kg).

b The activity reported is the net activity result.

2.0 ml. sample volume.

Low levels of Sr-90 are still detected in the environment. A concentration of (1-5 pCi/L) in milk is not unusual.

A4-2

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged First Result Second Result Result Lab Code Date Analysis Be-7 0.06 +/- 0.02 0.06 +/- 0.02 0.06 +/- 0.01 AP-10675, 10676 01/02/01 0.04 +/- 0.01 Be-7 0.04 +/- 0.01 0.04 +/- 0.01 AP-10803, 10804 01/03/01 0.04 +/- 0.01 0.04 +/- 0.01 0.04 +/- 0.01 01/03/01 Be-7 389.90 +/- 67.71 AP-10833, 10834 417.20 +/- 96.80 H-3 362.60 +/- 94.70 WW-51, 52 01/04/01 1469.65 +/- 124.49 1566.90 +/- 196.80 1372.40 +/- 152.50 01/08101 K-40 1482.00 +/- 100.35 MI-72, 73 1545.70 +/- 162.50

- K-40 1418.30 +/- 117.80 MI-96, 97 01/10101 4.23 +/- 2.74 3.20 +/- 1.84 Gr. Beta 2.17 +/- 2.47 U-858, 859 01/18101 1476.25 +/- 109.77 1489.20 +/- 141.10 1463.30 +/- 168.20 01/24/01 K-40 2.50 +/- 0.36 MI-389, 390 2.37 +/- 0.50 Gr. Beta 2.63 +/- 0.52 DW-879, 880 01/29/01 2.46 +/- 0.63 2.47 +/- 0.43 Gr. Beta 2.48 +/- 0.58 SWU-813, 814 01130/01 1229.90 +/- 68.48 1179.40 +/- 103.00 1280.40 +/- 90.26 02/01/01 K-40 -0.05 +/- 0.18 MI-708, 709 -0.12 +/- 0.26 1-131 0.01 +/- 0.26 MI-740, 741 02/01/01 1434.50 +/- 100.49 1434.00 +/- 156.50 1435.00 +/- 126.10 02/01/01 K-40 1487.50 +/- 104.70 MI-740, 741 1390.70 +/- 136.50 02/05/01 K-40 1584.30 +/- 158.80 MI-789, 790 5.54 +/- 1.13 5.11 +/- 0.78 Gr. Beta 4.67 +/- 1.08 DW-901, 902 02/07/01 2.33 +/- 0.52 2.73 +/- 0.41 Gr. Beta 3.13 +/- 0.63 SWU-1544, 1545 02/27/01 2.34 +/- 0.93 2.20 +/- 0.65 Gr. Beta 2.05 +/- 0.92 DW-1426, 1427 02/28/01 86.96 +/- 67.02 42.60 +/- 94.23 131.31 +/- 95.34 02/28/01 H-3 53.06 +/- 56.97 DW-1426, 1427 53.06 +/- 65.79 53.06 +/- 93.03 02/28/01 H-3 -0.06 +/- 0.21 WW-1476, 1477 -0.01 +/- 0.20 -0.10 +/- 0.37 03/02/01 1-131 1486.00 +/- 130.71 MI-1523, 1524 1576.00 +/- 184.90 03/02/01 K-40 1396.00 +/- 184.80 MI-1523, 1524 1326.00 +/- 118.80 1412.60 +/- 82.08 K-40 1499.20 +/- 113.30 MI-1572, 1573 03/07/01 1.51 +/- 0.52 1.58 +/- 0.34 Sr-90 1.65 +/- 0.44 MI-1572, 1573 03/07/01 344.80 +/- 82.30 321.30 +/- 53.13 03/07/01 K-40 297.80 +/- 67.20 SW-1648, 1649 1372.20 +/- 119.70 1399.00 +/- 109.46 03/12/01 K-40 1425.80 +/- 183.30 MI-1800, 1801 2.14 +/- 0.69 2.18 +/- 0.50 Gr. Alpha 2.22 +/- 0.73 SW-1779, 1780 03/13/01 6.62 +/- 0.70 6.45 +/- 0.51 03/13/01 Gr. Beta 6.28 +/- 0.74 SW-1779, 1780 0.13 +/- 0.55 -0.26 +/- 0.31 1-131 -0.65 +/- 0.27 MI-1447, 1448 03/14/01 1454.80 +/- 115.01 1496.20 +/- 155.40 1413.40 +/- 169.60 03/14/01 K-40 520.44 +/- 78.59 MI-1447, 1448 500.85 +/- 110.46 03/22/01 H-3 540.04 +/- 111.84 WW-2115, 2116 5.57 +/- 1.85 5.82 +/- 1.27 Gr. Beta 6.07 +/- 1.75 SW-1698, 1699 03/26/01 1.63 +/- 0.83 1.87 +/- 0.60 Gr. Beta 2.10 +/- 0.86 DW-2272, 2273 03/28/01 1.32 +/- 0.47 1.27 +/- 0.35 Gr. Beta 1.22 +/- 0.50 WW-2356, 2357 03/28/01 0.05 +/- 0.01 0.06 +/- 0.01 Be-7 0.07 +/- 0.02 AP-2812, 2813 03/28/01 0.05 +/- 0.01 0.06 +/- 0.01 Be-7 0.07 +/- 0.02 AP-2812, 2813 03/28/01 2.23 +/- 0.55 2.04 +/- 0.37 Gr. Beta 1.85 +/- 0.51 LW-2217, 2218 03129/01 0.06 +/- 0.02 0.05 +/- 0.01 03/29/01 Be-7 0.04 +/- 0.01 AP-2833, 2834 0.07 +/- 0.02 0.07 +/- 0.01 03/29/01 Be-7 0.07 +/- 0.02 AP-3038, 3039 0.07 +/- 0.01 0.07 +/- 0.01 03/29/01 Be-7 0.06 +/- 0.02 AP-3038, 3039 1.81 +/- 0.88 1.69 +/- 0.63 Gr. Beta 1.58 +/- 0.89 DW-2398, 2399 03/30/01 2.42 +/- 0.53 2.47 +/- 0.37 03/31/01 Gr. Beta 2.52 +/- 0.53 LW-2467, 2468 1376.00 +/- 175.90 1330.70 +/- 124.81 04/02/01 K-40 1285.40 +/- 177.10 MI-2446, 2447 0.05 +/- 0.01 0.05 +/- 0.00 Be-7 0.05 +/- 0.01 AP-3017, 3018 04/02/01 262.00 +/- 44.31 255.60 +/- 59.80 268.40 +/- 65.40 04/03/01 K-40 SW-2423, 2424 A5-1

1 11 TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result BS-3103, 3104 04/19/01 Gr. Beta 7.99 +/- 1.80 8.17 +/- 1.73 8.08 +/- 1.25 SWU-3239, 3240 04/24/01 Gr. Beta 3.30 +/- 0.60 4.30 +/- 0.74 3.80 +/- 0.48 SS-3322, 3323 04/25/01 K-40 15.99 +/- 1.08 15.59 +/- 1.01 15.79 +/- 0.74 W-3990, 3991 04/30/01 Sr-89 91.35 +/- 18.94 85.29 +/- 23.99 88.32 +/- 15.28 BS-4347, 4348 04/30/01 K-40 3982.40 +/- 489.60 3255.80 +/- 450.10 3619.10 +/- 332.53 BS-4347, 4348 04/30/01 K-40 3.26 +/- 0.45 3.98 +/- 0.49 3.62 +/- 0.33 MI-3364, 3365 05/01/01 K-40 1325.90 +/- 160.20 1453.20 +/- 163.00 1389.55 +/- 114.27 SO-3385, 3386 05/01/01 Gr. Alpha 6.51 +/- 3.09 9.01 +/- 3.44 7.76 +/- 2.31 SO-3385, 3386 05/01/01 Gr. Beta 24.63 +/- 3.15 28.17 +/- 3.12 26.40 +/- 2.22 SO-3385, 3386 05/01/01 K-40 19.17 +/- 1.08 17.94 +/- 0.76 18.56 +/- 0.66 cl-4068, 4069 05/01/01 K-40 1.09 +/- 0.27 1.13 +/- 0.23 1.11 +/- 0.18 MI-3475, 3476 05/02/01 Gr. Beta 1297.10 +/- 114.60 1433.60 +/- 156.60 1365.35 +/- 97.03 WW-3545, 3546 05/02/01 Gr. Beta 1.57 +/- 0.55 1.36 +/- 0.53 1.47 +/- 0.38 MI-3681, 3682 05/06/01 K-40 1417.20 +/- 125.70 1496.20 +/- 124.50 1456.70 +/- 88.46 SW-3702, 3703 05/08/01 Gr. Alpha 4.51 +/- 1.66 3.22 +/- 1.55 3.87 +/- 1.13 SW-3702, 3703 05/08/01 Gr. Beta 8.74 +/- 1.36 7.11 +/- 1.38 7.93 +/- 0.97 BS-4021, 4022 05/09/01 Cs-1 37 224.30 +/- 30.20 205.90 +/- 43.00 215.10 +/- 26.27 BS-4021, 4022 05/09/01 H-3 842.00 +/- 47.00 860.00 +/- 48.00 851.00 +/- 33.59 BS-4021, 4022 05/09/01 K-40 21117.00 +/- 953.00 21629.00 +/- 1357.00 21373.00 +/- 829.10 BS-4021, 4022 05/09/01 PU-238 80.30 +/- 36.50 59.50 +/- 22.00 69.90 +/- 21.31 BS-4021. 4022 05/09/01 PU-239/40 49.40 +/- 31.80 41.10 +/- 19.60 45.25 +/- 18.68 BS-4021. 4022 05/09/01 Ra-226 7436.00 +/- 577.90 9126.00 +/- 751.90 8281.00 +/- 474.16 BS-4021, 4022 05/09/01 Sr-90 10.60 +/- 2.71 16.80 +/- 3.22 13.70 +/- 2.10 F-3813, 3814 05/10/01 K-40 2.10 +/-0.17 2.30 +/- 0.26 2.20 +/- 0.16 G-4158, 4159 05/23/01 Be-7 0.37 +/-0.13 0.41 +/- 0.14 0.39 +/- 0.10 SO-4179, 4180 05/23/01 Ac-228 0.45 +/-0.13 0.52 +/- 0.14 0.49 +/- 0.10 SO-4179, 4180 05/23/01 Bi-214 0.31 + 0.06 0.41 +/- 0.06 0.36 +/- 0.04 SO-4179, 4180 05/23/01 Cs-137 0.46 +/- 0.05 0.47 +/- 0.04 0.47 +/- 0.03 SO-4179, 4180 05/23/01 Gr. Beta 26.65 +/- 2.63 24.68 +/- 2.52 25.67 +/- 1.82 SO-4179, 4180 05/23/01 K-40 16.35 +/- 0.86 16.05 +/- 0.82 16.20 +/- 0.59 SO-4179, 4180 05/23/01 Pb-212 0.35 +/- 0.04 0.43 +/- 0.05 0.39 +/- 0.03 SO-4179, 4180 05/23/01 Ra-226 0.56 +/- 0.98 1.03 +/- 0.31 0.79 +/- 0.51 SO-4179, 4180 05/23/01 TI-208 0.14 +/- 0.03 0.17 +/- 0.03 0.15 +/- 0.02 BS-4233, 4234 05/23/01 Cs-1 37 0.03 +/- 0.01 0.03 +/- 0.02 0.03 +/- 0.01 BS-4233, 4234 05/23/01 K-40 8.18 +/- 0.48 7.80 +/- 0.58 7.99 +/- 0.38 SWU-4376, 4377 05/29/01 Gr. Beta 2.58 +/- 0.55 2.94 +/- 0.58 2.76 +/- 0.40 DW-4449, 4450 05/29/01 Gr. Beta 2.83 +/- 0.55 3.74 +/- 0.65 3.29 +/- 0.43 DW-4397, 4398 05/30/01 Gr. Beta 9.13 +/- 1.26 10.20 +/- 1.34 9.66 +/- 0.92 MI-4114, 4115 05/31/01 K-40 1325.90 +/- 118.80 1394.70 +/- 133.10 1360.30 +/- 89.20 F-4284, 4285 05/31/01 K-40 2.23 + 0.32 2.12 +/- 0.35 2.18 +/- 0.24 DW-4326, 4327 06/02/01 Gr. Beta 2.60 +/- 0.97 1.47 +/- 0.83 2.04 +/- 0.64 MI-4470, 4471 06/04/01 K-40 1514.50 +/- 116.60 1456.80 +/- 130.90 1485.65 +/- 87.65 SW-4493, 4494 06/04/01 Gr. Beta 4.05 +/- 1.23 4.64 +/- 1.32 4.35 +/- 0.90 A5-2

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Analysis First Result Second Result Result Lab Code Date 06/06/01 Co-60 112.00 +/- 24.30 84.50 +/- 8.70 98.25 +/- 12.91 BS-4725, 4726 3094.80 +/- 35.30 3088.95 +/- 53.07 06/06/01 Cs-137 3083.10 +/- 100.10 BS-4725, 4726 8083.80 +/- 225.1Q 8113.75 +/- 339.40 06/06/01 K-40 8143.70 +/- 640.40 BS-4725, 4726 1363.90 +/- 73.40 1363.05 +/- 51.34 06/111/01 K-40 1362.20 +/- 71.80 MI-4775, 4776 1046.80 +/- 125.20 1110.15 +/- 89.92 06/15/01 H-3 1173.50 +/- 129.10 WW-5110, 5111 1.14 +/- 0.39 1.02 +/- 0.21 06/20101 Be-7 0.89 +/- 0.17 G-5085, 5086 5.22 +/- 0.70 5.17 +/- 0.40 06/20101 K-40 5.13 +/- 0.39 G-5085, 5086 1406.20 +/- 123.80 1467.95 +/- 87.15 06/26/01 K-40 1529.70 +/- 122.70 MI-5259, 5260 1.71 +/- 0.44 1.70 +/- 0.30 06/26/01 Sr-90 1.69 +/- 0.42 MI-5259, 5260 1.91 +/- 0.52 2.25 +/- 0.37 06/26/01 Gr. Beta 2.59 +/- 0.54 SWU-5422, 5423 8.88 +/- 0.26 8.50 +/- 0.18 06127/01 Gr. Beta 8.12 +/- 0.24 VE-5401, 5402 6.26 + 0.65 6.40 +/- 0.42 06/27/01 K-40 6.55 +/- 0.52 VE-5401, 5402 0.08 +/- 0.01 0.08 +/- 0.01 06/27101 Be-7 0.08 +/- 0.01 AP-5830, 5831 5.96 + 1.56 5.70 +/- 1.15 06/28/01 Gr. Beta 5.43 +/- 1.70 SW-5557, 5558 0.07 +/- 0.02 0.07 +/- 0.01 06/28/01 Be-7 0.07 +/- 0.02 AP-5851, 5852 4.18 +/- 1.34 4.47 +/- 0.96 06/29/01 Gr. Beta 4.75 +/- 1.38 SW-5636, 5637 2.18 + 0.34 2.30 +/- 0.25 06/30101 Gr. Beta 2.42 +/- 0.37 LW-5681, 5682 0.97 + 0.54 0.98 +/- 0.31 07/02/01 Be-7 0.99 +/- 0.29 G-5535, 5536 7.72 +/-0.12 7.67 +/- 0.08 07/02/01 Gr. Beta 7.62 +/- 0.12 G-5535, 5536 7.64 +/- 0.93 7.45 +/- 0.69 07/02/01 K-40 7.26 +/- 1.03 G-5535, 5536 0.07 +/-0.02 0.08 +/- 0.01 07/02/01 Be-7 0.08 +/- 0.02 AP-5788, 5789 0.08 +/- 0.02 0.07 +/- 0.01 07/02101 Be-7 0.07 +/- 0.02 AP-5872, 5873 0.08 +/- 0.01 0.08 +/- 0.02 0.08 +/- 0.01 AP-5893, 5894 07/02/01 Be-7 0.06 +/- 0.01 0.06 +/- 0.01 07/03/01 Be-7 0.07 +/- 0.02 AP-5809, 5810 2.89 +/- 0.60 2.92 +/- 0.46 07/10/01 Gr. Alpha 2.95 +/- 0.70 SW-5724, 5725 8.50 +/- 0.48 8.79 +/- 0.71 8.21 +/- 0.65 SW-5724, 5725 07/10/01 Gr. Beta 0.61 + 0.26 0.70 +/- 0.20 07/10/01 1-131 0.79 +/- 0.31 SW-5767, 5768 3.15 +/- 0.58 3.11 +/- 0.43 07/11/01 Gr. Beta 3.06 +/- 0.64 LW-5920, 5921 0.32 +/- 0.04 0.31 +/- 0.03 07/19/01 Cs-137 0.30 +/- 0.05 SO-6172, 6173 17.88 +/- 0.68 K-40 18.20 +/- 1.08 17.55 +/- 0.82 SO-6172, 6173 07/19/01 0.04 +/- 0.01 0.03 +/- 0.01 0.05 +/- 0.02 SO-6172, 6173 07/19/01 Sr-90 986.31 +/- 91.91 976.33 +/- 61.68 07/24/01 K-40 966.35 +/- 82.28 MI-6353, 6354 0.81 +/- 0.17 0.70 +/- 0.12 07/24101 1-131 0.58 +/- 0.16 SW-6376, 6377 2.49 +/- 0.05 2.51 +/- 0.03 07/25/01 Gr. Beta 2.52 +/- 0.05 VE-6424, 6425 3.12 +/- 0.37 3.08 +/- 0.23 07/25/01 K-40 3.04 +/- 0.26 VE-6424, 6425 1424.80 +/- 106.51 K-40 1407.40 +/- 97.10 1442.20 +/- 189.60 MI-6445, 6446 07/25/01 2.70 +/- 0.39 2.61 +/- 0.57 2.79 +/- 0.54 LW-6489, 6490 07/25/01 Gr. Beta 1375.50 +/- 129.60 1437.05 +/- 86.27 07/25/01 K-40 1498.60 +/- 113.90 MI-6533, 6534 2.19 +/- 0.43 2.01 +/- 0.59 2.36 +/- 0.63 DW-6835, 6836 07130/01 Gr. Beta 1417.30 +/- 176.50 1355.80 +/- 106.35 08101/01 K-40 1294.30 +/- 118.70 MI-6693, 6694 1.23 +/- 0.41 1.35 +/- 0.29 08/01/01 Sr-90 1.47 +/- 0.42 MI-6693, 6694 5.80 +/- 0.69 5.64 +/- 0.49 08/06/01 Gr. Beta 5.49 +/- 0.69 WW-6952, 6953 1573.25 +/- 128.63 K-40 1613.80 +/- 218.50 1532.70 +/- 135.80 MI-6906, 6907 08/07101 4.25 +/- 0.34 4.21 +/- 0.24 4.29 +/- 0.64 VE-6973, 6974 08/07/01 K-40 A5-3

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result 08/07/01 Gr. Beta 2.20 +/- 0.48 2.12 +/- 0.42 2.16 +/- 0.32 LW-7851, 7852 K-40 1453.80 +/- 148.10 1285.30 +/- 190.50 1369.55 +/- 120.65 MI-7001, 7002 08/08/01 K-40 1217.30 +/- 80.83 1218.30 +/- 99.13- 1217.80 +/- 63.95 MI-7073, 7074 08/14/01 Gr. Beta 2.77 +/- 0.53 3.60 +/- 0.59 3.19 +/- 0.39 LW-7145, 7146 08/15/01 K-40 1192.90 +/- 95.40 1388.90 +/- 132.70 1290.90 +/- 81.72 MI-7221, 7222 08/20/01 Sr-90 2.10 +/- 0.48 1.72 +/- 0.47 1.91 +/- 0.34 MI-7221, 7222 08/20/01 Gr. Beta 17.51 +/- 3.06 20.36 +/- 3.31 18.93 +/- 2.25 SWU-7527, 7528 08/28/01 K-40 2.12 +/- 0.47 2.47 +/- 0.34 2.30 +/- 0.29 VE-7485, 7486 08/29/01 Gr. Beta 4.25 +/- 1.18 4.13 +/- 1.12 4.19 +/- 0.81 DW-7506, 7507 08/31/01 K-40 1340.10 +/- 111.10 1290.80 +/- 116.50 1315.45 +/- 80.49 MI-7622, 7623 09/04/01 K-40 1408.10 +/- 102.70 1396.90 +/- 114.30 1402.50 +/- 76.83 MI-7664, 7665 09/05/01 K-40 1416.40 +/- 192.30 1318.00 +/- 155.50 1367.20 +/- 123.65 MI-7876, 7877 09/11/01 Be-7 1.27 +/- 0.21 1.25 +/- 0.25 1.26 +/- 0.16 G-7960, 7961 09/12/01 K-40 5.21 +/- 0.57 5.70 +/- 0.63 5.45 +/- 0.43 G-7960, 7961 09/12/01 Cs-137 0.06 +/- 0.02 0.04 +/- 0.02 0.05 +/- 0.01 F-8011, 8012 09/14/01 Gr. Beta 3.68 +/- 0.12 3.50 +/- 0.11 3.59 +/- 0.08 F-8011, 8012 09/14/01 K-40 3.47 +/- 0.49 3.38 +/- 0.47 3.43 +/- 0.34 F-8011, 8012 09/14/01 K-40 1551.70 +/- 118.00 1489.90 +/- 123.60 1520.80 +/- 85.44 MI-8149, 8150 09/19/01 K-40 1550.30 +/- 170.60 1368.10 +/- 126.70 1459.20 +/- 106.25 MI-8343, 8344 09/25/01 Gr. Beta 3.37 +/- 0.10 3.42 +/- 0.11 3.39 +/- 0.07 VE-8319, 8320 09/26/01 K-40 2.14 +/- 0.46 2.24 +/- 0.37 2.19 +/- 0.29 VE-8319, 8320 09/26/01 Be-7 0.07 +/- 0.02 0.07 +/- 0.01 0.07 +/- 0.01 AP-9069, 9070 09/27/01 Be-7 0.08 +/- 0.02 0.09 +/- 0.03 0.09 +/- 0.02 AP-9566, 9567 09/27/01 Be-7 0.24 +/- 0.10 0.19 +/- 0.10 0.22 +/- 0.07 VE-8700, 8701 10/01/01 K-40 2.03 +/- 0.24 2.03 +/- 0.21 2.03 +/- 0.16 VE-8700, 8701 10/01/01 Sr-90 0.01 +/- 0.00 0.01 +/- 0.00 0.01 +/- 0.00 VE-8700, 8701 10/01/01 Be-7 0.07 +/- 0.01 0.07 +/- 0.00 0.07 +/- 0.01 AP-9048, 9049 10/01/01 Gr. Beta 4.74 +/- 1.06 5.08 +/- 1.21 4.91 +/- 0.80 DW-8636, 8637 10/02/01 Gr. Beta 4.65 +/- 0.58 4.28 +/- 0.54 4.47 +/- 0.40 DW-8615, 8616 10/03/01 Be-7 0.07 +/- 0.01 0.07 +/- 0.01 0.07 +/- 0.01 AP-9090, 9091 10/03/01 Be-7 0.08 +/- 0.02 0.08 +/- 0.02 0.08 +/- 0.01 AP-9166, 9167 10/03/01 Be-7 0.07 +/- 0.01 0.05 +/- 0.01 0.06 +/- 0.01 AP-9187, 9188 10/03/01 Be-7 309.90 +/- 158.80 348.30 +/- 168.10 329.10 +/- 115.62 VE-10562, 10563 10/03/01 10/03/01 K-40 6407.10 +/- 620.70 6057.50 +/- 660.40 6232.30 +/- 453.15 VE-10562, 10563 Gr. Beta 5.08 +/- 1.20 4.74 +/- 1.06 4.91 +/- 0.80 WW-8636, 8637 10/04/01 Gr. Beta 4.28 +/- 0.89 3.40 +/- 0.90 3.84 +/- 0.63 DW-8894, 8895 10/05/01 K-40 1440.70 +/- 46.60 1424.80 +/- 76.40 1432.75 +/- 44.75 MI-9232, 9233 10/16/01 K-40 1.91 +/- 0.22 1.97 +/- 0.39 1.94 +/- 0.22 VE-9518, 9519 10/17/01 H-3 755.90 +/- 102.50 684.70 +/- 99.90 720.30 +/- 71.57 WW-10257, 10258 11/08/01 Be-7 0.68 +/- 0.26 0.99 +/- 0.26 0.84 +/- 0.18 VE-10333, 10334 11/14/01 K-40 6.10 +/- 0.72 5.83 +/- 0.72 5.97 +/- 0.51 VE-10333, 10334 11/14/01 K-40 1428.40 +/- 114.70 1445.50 +/- 129.40 1436.95 +/- 86.46 MI-10588, 10589 11/26/01 Gr. Beta 3.49 +/- 0.91 2.36 +/- 0.76 2.93 +/- 0.60 DW-10688, 10689 11/28/01 H-3 233.90 +/- 90.60 226.30 +/- 90.20 230.10 +/- 63.92 WW-10905, 10906 12/05/01 A5-4

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result SS-10953, 10954 12/05/01 Ac-228 1.10 +/- 0.25 0.91 + 0.16 1.00 +/- 0.15 12/05/01 Bi-214 0.69 +/- 0.08 0.75 +/- 0.08 0.72 +/- 0.06 SS-10953, 10954 Co-58 0.21 +/- 0.05 0.18 +/- 0.04 0.19 +/- 0.03 SS-10953, 10954 12/05/01 12/05/01 Co-60 0.93 +/- 0.06 0.94 +/- 0.06 0.93 +/- 0.04 SS-10953,10954 Cs-137 0.13 +/- 0.03 0.16 +/- 0.03 0.14 +/- 0.02 SS-10953,10954 12/05/01 12/05/01 K-40 9.91 +/- 0.83 8.36 +/- 0.80 9.13 +/- 0.57 SS-1 0953, 10954 12/05/01 Pb-212 0.94 +/- 0.05 0.91 +/- 0.06 0.92 +/- 0.04 SS-10953, 10954 12105/01 Pb-214 0.83 +/- 0.08 0.82 +/- 0.07 0.83 +/- 0.05 SS-10953, 10954 12/05/01 Ra-226 1.76 +/- 0.37 1.67 +/- 0.37 1.72 +/- 0.26 SS-10953, 10954 12/05/01 TI-208 0.34 +/- 0.05 0.31 +/- 0.05 0.32 +/- 0.04 SS-10953, 10954 12/10/01 K-40 1339.80 +/- 128.70 1435.80 +/- 117.30 1387.80 +/- 87.07 MI-11033, 11034 Sr-90 1.31 +/- 0.41 1.38 +/- 0.37 1.35 +/- 0.28 MI-11033, 11034 12/10/01 Be-7 0.06 +/- 0.02 0.06 +/- 0.02 0.06 +/- 0.01 AP-11888, 11889 12/28/01 Duplicate analyses are performed on every twentieth sample received in-house. Results are not listed for those analyses with activities that measure below the LLD.

a Results are reported in units of pCi/L, except for elemental potassium (K) in milk (mglL), air filters (pCi/Filter), food products and vegetation (pCi/g), soil and sediments (pCi/kg).

A5-5

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

Concentrationb Known Control Type Date Analysis Laboratory result Activity Limitsc Lab Code STSO-923d Soil 01/01/01 Am-241 0 - 2.6 STSO-923 Soil 01/01/01 Co-57 100.2 +/- 3.5 103 +/- 10.3 72.1 - 133.9 STSO-923 Soil 01/01/01 Co-60 1285.1 +/- 5.3 1270 +/- 127.0 889 -1651.0 STSO-923 Soil 01/01/01 Cs-134 81.1 +/- 1.8 91.1 +/- 9.1 63.77 - 118.4 STSO-923 Soil 01/01/01 Cs-137 1210.6 +/- 6.6 1240 +/- 124.0 868-1612.0 STSO-923 Soil 01/01/01 K-40 732.6 +/- 21.2 652 +/- 65.2 456.4 - 847.6 STSO-923 Soil 01/01/01 Mn-54 212.6 +/- 6.7 203 +/- 20.3 142.1 - 263.9 STSO-923 Soil 01/01/01 Pu-238 110.7 +/- 7.2 115 +/- 11.5 80.5 -149.5 STSO-923 Soil 01/01/01 Pu-239/40 79.6 +/- 5.9 83.4 +/- 8.3 58.38 - 108.4 STSO-923 Soil 01/01/01 Sr-90 159.8 +/- 9.5 209 +/- 20.9 146.3 - 271.7 STSO-923 Soil 01/01/01 U-233/4 45 +/- 3.9 60 +/- 6.0 42 - 78.0 STSO-923 Soil 01/01/01 U-238 165.6 +/- 7.4 191 +/- 19.1 133.7 - 248.3 STSO-923 Soil 01/01/01 Zn-65 428.5 +/- 10.9 382 +/- 38.2 267.4 - 496.6 a Results obtained by Environmental, Inc. ,Midwest Laboratory as a participant in the Department of Energy's Mixed Analyte Performance Evaluation Program, Idaho Operations office, Idaho Falls, Idaho b All results are in Bq/kg or Bq/L as requested by the Department of Energy.

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

d Included in the testing series as a "false positive". No activity expected. Result of analysis; < 0.8 Bq/L.

A6-1

(EML)a.

TABLE A-7. Environmental Measurements Laboratory Quality Assessment Program Concentrationb EML Control Resultc Limitsd Lab Code Type Date Analysis Laboratory results Concentrationb Ac-228 45.60 +/- 4.00 42.70 0.80 -1.50 STSO-904 Soil 03/01/01 0.63 - 2.64 14.40 +/- 0.50 14.80 Soil 03101/01 Am-241 STSO-904 42.00 0.45-1.23 Bi-212 53.20 +/- 3.10 STSO-904e Soil 03/01/01 0.78 - 1.50 42.10 +/- 7.70 32.60 Soil 03/01/01 Bi-214 STSO-904 1740.00 0.80 -1.29 03/01/01 Cs-137 1772.60 +/- 79.80 STSO-904 Soil 0.80 -1.37 K-40 583.80 +/- 52.60 468.00 STSO-904 Soil 03/01-/01 41.50 0.74 -1.36 03/01/01 Pb-212 46.60 +/- 8.50 STSO-904 Soil 0.76 - 1.53 45.30 +/- 8.60 34.30 STSO-904 Soil 03/01101 Pb-214 26.00 +/- 0.80 25.60 0.71 - 1.33 Soil 03/01/01 Pu-239/40 STSO-904 69.00 0.61 - 3.91 Sr-90 55.60 +/- 2.20 STSO-904 Soil 03101/01 0.76-1.48 2.15 +/- 0.14 1.67 Water 03/01/01 Am-241 STW-905 98.20 0.80 - 1.20 Co-60 97.00 +/- 0.80 STW-905 Water 03/01/01 0.80 - 1.24 70.10 +/- 4.00 73.00 Water 03/01/01 Cs-137 STW-905 79.30 0.74 - 2.29 H-3 76.50 +/- 5.50 STW-905 Water 03101/01 0.74 - 1.22 1.69 +/- 0.07 1.58 STW-905 Water 03/01/01 Pu-238 1.69 +/- 0.07 1.64 0.75 - 1.26 STW-905 Water 03/01/01 Pu-239/40 3.85 +/- 0.13 4.40 0.64 - 1.50 STW-905 Water 03/01/01 Sr-90 1.04 0.80 - 1.40 03/01/01 U-233/4 0.90 +/- 0.05 STW-905 Water 1.04 0.80 -1.29 U-238 0.88 +/- 0.05 STW-905 Water 03/01/01 0.58 -1.26 1724.60 +/- 141.70 1900.00 STW-906 Water 03/01/01 Gr. Alpha 1297.00 0.56-1.50 Water 03/01/01 Gr. Beta 1246.40 +/- 31.10 STW-906 0.49 0.69 - 2.40 03/01/01 Am-241 0.47 +/- 0.04 STAP-907 Air Filter 19.44 0.79 -1.30 03/01/01 Co-60 20.11 +/- 0.16 STAP-907 Air Filter 0.74 -1.21 2.71 +/- 0.15 2.83 STAP-907 Air Filter 03/01/01 Cs-134 9.86 +/- 0.23 8.76 0.78 - 1.35 STAP-907 Air Filter 03/01/01 Cs-1 37 7.25 +/- 0.22 6.52 0.80 - 1.36 STAP-907 Air Filter 03/01/01 Mn-54 0.23 +/- 0.03 0.22 0.66 -1.35 STAP-907 Air Filter 03/01/01 Pu-238 0.12 +/- 0.02 0.14 0.69 -1.29 STAP-907 Air Filter 03/01/01 Pu-239/40 7.41 +/- 0.15 7.10 0.55 - 2.05 STAP-907 Air Filter 03/01/01 Sr-90 0.05 +/- 0.01 0.05 0.80-1.92 STAP-907 Air Filter 03/01/01 U-233/4 0.05 +/- 0.01 0.05 0.80 -1.59 STAP-907 Air Filter 03/01101 U-238 2.66 +/- 0.02 3.97 0.57 -1.47 STAP-908 Air Filter 03/01/01 Gr. Alpha 2.30 +/- 0.02 2.58 0.76 -1.52 STAP-908 Air Filter 03/01/01 Gr. Beta 6.10 +/- 0.20 6.17 0.72 - 2.34 STVE-909 Vegetation 03/01101 Am-241 3.50 +/- 0.50 3.69 0.61 -1.61 STVE-909 Vegetation 03/01/01 Cm-244 28.50 +/- 2.10 30.40 0.75 - 1.51 STVE-909 Vegetation 03/01/01 Co-60 795.50 +/- 76.40 842.00 0.80 -1.37 STVE-909 Vegetation 03/01/01 Cs-1 37 592.60 +/- 42.50 603.00 0.78 -1.43 STVE-909 Vegetation 03/01/01 K-40 8.50 +/- 0.60 9.58 0.67 -1.49 STVE-909 Vegetation 03/01/01 Pu-239/40 1330.00 0.52 - 1.23 Vegetation 03/01/01 Sr-90 1239.60 +/- 130.00 STVE-909 0.76 0.76-1.48 09/04/01 Am-241 0.70 +/- 0.10 STW-925 Water 0.80 - 1.20 206.70 +/- 4.70 209.00 STW-925 Water 09/04/01 Co-60 45.13 0.80 -1.24 09/04/01 Cs-137 46.60 +/- 0.80 STW-925 Water 0.74 - 2.29 254.10 +/- 3.60 207.00 STW-925 Water 09/04/01 H-3 A7-1

I HI TABLE A-7. Environmental Measurements Laboratory Quality Assessment Program (EML)a.

Concentrationb EML Control Lab Code Type Date Analysis Laboratory results Resultc Limitsd STW-925 Water 09/04/01 Ni-63 50.90 +/- 3.00 45.25 0.70 - 1.30 STW-925 Water 09/04/01 Pu-238 1.10 +/- 0.10 1.09 0.74 -1.22 STW-925 Water 09/04/01 Pu-239/40 1.60 +/- 0.10 1.63 0.75-1.26 STW-925 Water 09/04/01 Sr-90 4.10 +/- 0.30 3.73 0.64 - 1.50 STW-925 Water 09/04/01 Uranium 2.20 +/- 0.20 2.37 0.73 - 1.37 STW-926 Water 09/04/01 Gr. Alpha 1220.00 +/- 32.00 1150.00 0.58 -1.26 STW-926 Water 09/04/01 Gr. Beta 8461.00 +/- 206.00 7970.00 0.56 - 1.50 STSO-927 Soil 09/04/01 Ac-228 68.10 +/- 1.40 59.57 0.80 - 1.50 STSO-927 Soil 09/04/01 Am-241 5.20 +/- 1.30 4.43 0.63 -2.64 STSO-927 Soil 09/04/01 Bi-212 65.10 +/- 1.60 62.07 0.45 - 1.23 STSO-927 Soil 09/04/01 Bi-214 47.30 +/- 4.70 36.90 0.78 -1.50 STSO-927 Soil 09/04/01 Cs-1 37 659.20 +/- 10.80 612.33 0.80 - 1.29 STSO-927 Soil 09/04/01 K-40 737.70 +/- 16.60 623.33 0.80 - 1.37 STSO-927 Soil 09/04/01 Pb-212 64.70 +/- 3.80 58.33 0.74 - 1.36 STSO-927 Soil 09/04/01 Pb-214 53.70 +/- 7.70 39.67 0.76 - 1.53 STSO-927 Soil 09/04/01 Pu-239/40 9.30 +/- 2.90 8.95 0.71 -1.33 STSO-927 Soil 09/04/01 Sr-90 27.40 +/- 6.30 30.60 0.61 - 3.91 STSO-927 Soil 09/04/01 Uranium 155.60 +/- 7.80 194.23 0.62 - 1.35 STVE-928 Vegetation 09/04/01 Am-241 7.00 +/- 0.30 6.92 0.72 - 2.34 STVE-928 Vegetation 09/04/01 Cm-244 4.30 +/- 0.80 4.31 0.61 - 1.61 STVE-928 Vegetation 09/04/01 Co-60 40.20 +/- 0.90 35.30 0.75 - 1.51 STVE-928 Vegetation 09/04/01 Cs-137 1184.00 +/- 2.80 1030.00 0.80 -1.37 STVE-928 Vegetation 09/04/01 K-40 1023.00 +/- 44.10 898.67 0.78 - 1,43 STVE-928 Vegetation 09/04/01 Pu-239/40 8.90 +/- 1.40 11.02 0.67 -1.49 STVE-928 Vegetation 09104/01 Sr-90 1364.00 +/- 18.40 1612.80 0.52 - 1.23 STAP-929 Air Filter 09/04/01 Am-241 0.09 +/- 30.00 0.09 0.69 -2.40 STAP-929 Air Filter 09/04/01 Co-60 16.90 +/- 0.30 17.50 0.79 - 1.30 STAP-929 Air Filter 09/04/01 Cs-134 11.80 +/- 0.20 12.95 0.74 - 1.21 STAP-929 Air Filter 09/04/01 Cs-137 18.30 +/- 0.30 17.10 0.78 - 1.35 STAP-929 Air Filter 09/04/01 Mn-54 85.40 +/- 1.30 81.15 0.80 -1.36 STAP-929 Air Filter 09/04/01 Pu-238 0.05 +/- 0.01 0.07 0.66 - 1.35 STAP-929 Air Filter 09/04/01 Pu-239/40 0.22 +/- 0.02 0.23 0.69 - 1.29 STAP-929 Air Filter 09/04/01 Sr-90 3.11 +/- 0.06 3.48 0.55 - 2.05 STAP-929 Air Filter 09/04/01 Uranium 0.24 +/- 0.05 0.22 0.80 - 2.54 STAP-930 Air Filter 09/04/01 Gr. Alpha 6.30 +/- 0.10 5.36 0.57 - 1.47 STAP-930 Air Filter 09/04/01 Gr. Beta 13.80 +/- 0.10 12.77 0.76 -1.52 SThe Environmental Measurements Laboratory provides the following nuclear species Air Filters, Soil, Vegetation and Water.

b 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.

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

0 Control limits are reported by EML as the ratio of Reported Value I EML value.

e 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.

A7-2

APPENDIX B DATA REPORTING CONVENTIONS B-1

Data Reporting Conventions 1.0. All activities, except gross alpha and gross beta, are decay corrected to collection time or the end of the collection period.

2.0. Single Measurements Each single measurement is reported as follows: x*s where: x = value of the measurement; s = 2s counting uncertainty (corresponding to the 95% confidence level).

In cases where the activity is less than the lower limit of detection L, it is reported as: <L, where L = the lower limit of detection based on 4.66s uncertainty for a background sample.

3.0. Duplicate analyses 3.1 Individual results: For two analysis results; xi +/- sl and x2 +/- S2 Reported result: x +/- s; where x = (1/2) (xl + x2) and s = (1/2) s1 +S2 3.2. Individual results: <Li, <L2 Reported result: <L, where L = lower of Li and L2 3.3. Individual results: x +/- s, <L Reported result: x +/- s if x > L; <L otherwise.

4.0. Computation of Averages and Standard Deviations 4.1 Averages and standard deviations listed in the tables are computed from all of the individual measurements over the period averaged; for example, an annual standard deviation would not be the average of quarterly standard deviations. The average x and standard deviation s of a set of n numbers x1 , x2 ...

xn are defined as follows:

x =*

x n-n 4.2 Values below the highest lower limit of detection are not included in the average.

4.3 If all values in the averaging group are less than the highest LLD, the highest LLD is reported.

4.4 If all but one of the values are less than the highest LLD, the single value x and associated two sigma error is reported.

4.5 In rounding off, the following rules are followed:

4.5.1. If the number following those to be retained is less than 5, the number is dropped, and the retained number s are kept unchanged. As an example, 11.443 is rounded off to 11.44.

4.5.2. If the number following those to be retained is equal to or greater than 5, the number is dropped and the last retained number is raised by 1. As an example, 11.445 is rounded off to 11.45.

B-2

APPENDIX C Maximum Permissible Concentrations of Radioactivity in Air and Water Above Background in Unrestricted Areas C-1

Table C-1. Maximum permissible concentrations of radioactivity in air and water above natural background in unrestricted areasa.

3 Water (pCiIL)

Air (pCi/m )

I x 103 Strontium-89 8,000 Gross alpha Strontium-90 500 Gross beta 1 2.8 x 10-1 Cesium-137 1,000 Iodine-1 3 1 b Barium-140 8,000 Iodine-131 1,000 Potassium-40c 4,000 Gross alpha 2 Gross beta 10 Tritium 1 x 106 a Taken from Table 2 of Appendix B to Code of Federal Regulations Title 10, Part 20, and appropriate footnotes.

Concentrations may be averaged over a period not greater than one year.

b Value adjusted by a factor of 700 to reduce the dose resulting from the air-grass-cow-milk-child pathway.

C A natural radionuclide.

C-2

APPENDIX D

SUMMARY

OF THE LAND USE CENSUS D-1

Appendix D Summary of the Land Use Census The Duane Arnold Energy Land Use Census for 2001 was completed during the fourth week of September 2001. All milk animals and gardens greater than 500 square feet were identified within three miles for each of the 16 meteorological sectors. If none were identified within the three mile range, additional surveys were performed out to a distance of five miles. The Cedar River was surveyed by boat on July 11th, 2001 for water use downstream of the DAEC to Cedar Rapids.

There were 171 gardens found during the performance of the 2001 Census. This number exceeds the number of gardens found in the 2000 survey by 2. This difference can be attributed to the removal of 6 gardens and the addition of 8 new gardens.

There have been several changes in the milk animal locations in the past year. The Andrews have discontinued milk production at their farm WNW of the plant on Lewis Bottoms Road. Likewise, the Schultes will no longer be supplying milk for the Rad.

Environmental Monitoring Program. The Schulte Farm is located near Norway, IA 21 miles SSW of the plant and serves as a control location for milk samples. The control station has subsequently been replaced with the McNulty Farm 17.3 miles to the SW.

Steps are being taken to compensate for the loss of the Andrews.

The locations of the nearest resident for each sector remained the same in 2000.

31 new homes were built or were under construction within three miles of the DAEC, compared to the 16 new homes identified in 2000. Most of the new houses built were located in the sectors between the plant and Cedar Rapids (SSE and ESE). A listing of the newly identified homes is attached.

The Cedar River survey revealed no new withdrawals of river water compared to previous surveys. Irrigation of the strawberry farm in Palo and fishing remain the only food pathway uses of river water between the DAEC and Cedar Rapids.

As a result of this census, adjustments were made to the MIDAS dose projection software model for the affected changes in receptor distances.

Pursuant to plant Environmental Sampling Procedure ESP 4.4, no changes were observed offsite that could adversely affect the safe operation of the DAEC or that would warrant a UFSAR update such as new gas pipelines, toxic gas installations or airfield strips.

D-2

APPENDIX E ANNUAL RADIATION DOSE ASSESSMENT E-1

Appendix E Annual Radiation Dose Assessment The annual offsite radiation dose to a member of the public was determined by assessment of environmental dosimeter results and by calculations based on monitored effluent releases.

Section A. Dose Contribution from Direct Radiation Direct radiation dose from the operation of the DAEC was reported by TLDs placed at locations in the surrounding environment as described in the Offsite Dose Assessment Manual (ODAM).

1. Pre-operational and 2001 TLD results were compared using a paired difference test.

No significant differences in the TLD populations were observed for the 0.5 mile and one mile TLD populations using a confidence level of 99%.

2. As stated in Part 1, page 8 of this report, no plant effect was indicated by the TLDs when dose results were compared to the estimated average natural background for Middle America.

Section B. Estimated Offsite Dose from Effluent Releases The contribution of dose to a member of the public most likely to be exposed from effluent releases was calculated by the Meteorological Information and Dose Assessment System (MIDAS) computer program in accordance with ODAM. The calculation methods follow those prescribed by Reg. Guide 1.109. Because there were no nuclides detected in the environment at or beyond the site boundary that were due to the operation of the DAEC, no comparison of calculated dose from stack releases and dose calculated from environmental contamination was performed.

Results of the MIDAS dose calculations are discussed below and are shown in tabular form on page E-3 1.) There were no releases of radioactive material to liquid effluents in 2001.

2.) The maximum dose to air at the site boundary from noble gases released was 1.20E-03 mrad from gamma radiation at 481 meters SSE.

3.) The maximum dose to air at the site boundary from noble gases released was 1.08E-02 mrad beta radiation at 936 meters NW.

E-2

4.) The whole body dose equivalent to the maximally exposed individual from noble gases was 9.87E-04 mrem, at 805 meters West.

5.) The skin dose equivalent to the maximally exposed individual from noble gases was 1.OOE-03 mrem, at 805 meters West.

6.) The maximally exposed organ due to iodines and particulates with half-lives greater than eight days was the liver of a child at 805 meters West, with an estimated dose equivalent of 5.08E-03 mrem.

Conclusion:

No measurable dose due to the operation of the DAEC was detected by environmental TLDs in 2001. The calculated doses are below the regulatory limits stated in Appendix I to 10 CFR 50 and in 40 CFR 190.

Estimated Maximum Offsite Individual Doses for 2001 Type Age Distance Direction Dose or Dose Annual 10 CFR Group (meters) Equivalent 50, Appendix I (mrem) Limit Direct Radiation None (as measured by TLDs)

Liquid Releases None Noble Gas Gamma Air Dose 481 SSE 1.20E-03 mrad 10 mrad Beta Air Dose 936 NW 1.08E-05 mrad 20 mrad Whole Body All 805 W 9.86E-07 mrem*

Skin All 805 W 1.OOE-03 mrad

Particulates & lodines Organ Dose Child - 805 W 5.08E-03 mrem 15 mrem LIVER

No Appendix I limit but is used to determine compliance with 40 CFR 190 limits of 25 mrem whole body and 75 mrem thyroid.

E-3

- Environmental, Inc.

Midwest Laboratory an Allegheny Technologies Co.

700 Landwehr Road

Northbrook, IL 60062-2310 ph . (847) 564-0700

fax (847) 564-4517

- IES UTILITIES, INC.

CEDAR RAPIDS, IOWA DUANE ARNOLD ENERGY CENTER CEDAR RAPIDS, IOWA Docket No. 50-331 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP)

ANNUAL REPORT - PART II DATA TABULATIONS AND ANALYSES January 1 to December 31, 2001 Prepared and submitted by ENVIRONMENTAL, Inc.

Midwest Laboratory Project No. 8001 Reviewed and Approved Lro~ia b -roaoMgS.

L.jatoý, nager

TABLE OF CONTENTS Section PaQe List of Tables ............................................................................................................... iii 1.0 INTRO DUCTIO N .................................................................................................... v 2.0 LISTING OF MISSED SAM PLES ............................................................................ vi 3.0 DATA TABLES ............................................................................................................ vii ii

LIST OF TABLES No. Title Paqe 1 Airborne particulates collected at Location D-l, (Cedar Rapids), analysis for g ro ss be ta ....................................................................................................... 1-1 2 Airborne particulates and iodine collected at Location D-2 (Marion), analysis for gross beta and iodine-131 .......................................................................... 2-1 3 Airborne particulates collected at Location D-3 (Hiawatha), analysis for g ro ss beta ........................................................................................................ 3 -1 4 Airborne particulates and iodine collected at Location D-5 (Palo), analysis for gross beta and iodine-131 ............................................................................... 4-1 5 Airborne particulates collected at Location D-6 (Center Point), analysis for g ro ss beta ....................................................................................................... 5 -1 6 Airborne particulates and iodine collected at Location D-7, (Shellsburg),

analysis for gross beta and iodine-131 ............................................................ 6-1 7 Airborne particulates and iodine collected at Location D-8 (Urbana), analysis for gross beta and iodine-131 .......................................................................... 7-1 8 Airborne particulates collected at Location D-10 (Atkins), analysis for gross b eta .................................................................................................................. 8-1 9 Airborne particulates and iodine collected at Location D-11 (Toddsville),

analysis for gross beta and iodine-131 ............................................................ 9-1 10 Airborne particulates collected at Location D-13 (Alburnett), analysis for g ross beta ..................................................................................................... 10-1 11 Airborne particulates and iodine collected at Location D-15 (on-site, north),

analysis for gross beta and iodine-131 .......................................................... 11-1 12 Airborne particulates collected at Location D-16 (on-site, south), analysis for g ross beta ...................................................................................................... 12 -1 13 Airborne particulate samples, quarterly composites of weekly samples, analysis for gamma-emitting isotopes .......................................................... 13-1 14 Ambient gamma radiation (TLD), quarterly exposure ................................................ 14-1 15 Milk samples, analysis for iodine-131 and gamma emitting isotopes ......................... 15-1 16 Ground water samples, analysis for gross beta and tritium ....................................... 16-1 17 Vegetation samples (broadleaf), analysis for iodine-131 and gamma em itting isotopes ............................................................................................ 17-1 iii

LIST OF TABLES (continued)

No. Title Paqe 18 Vegetation samples (hay and grain), analysis for gamma-emitting isotopes .............. 18-1 19 Surface water samples, analysis for iodine-131 and gamma-emitting isoto p es .......................................................................................................... 19 -1 20 Surface water samples, analysis for potassium-40, iodine-131 and gamma em itting isotopes ............................................................................................. 20-1 21 Surface water samples, quarterly composites of monthly samples, analysis fo r tritiu m ......................................................................................................... 2 1-1 22 Fish samples, analysis for gamma-emitting isotopes ................................................. 22-1 23 River sediment samples, analysis for gamma-emitting isotopes ................................ 23-1 24 Precipitation samples, analysis for gamma-emitting isotopes ..................................... 24-1 25 Precipitation samples, quarterly composites of monthly samples, analysis for tritiu m .............................................................................................................. 2 5 -1 26 Meat samples, analysis for gamma-emitting isotopes ................................................. 26-1 27 Soil samples, analysis for strontium-90 and gamma-emitting isotopes ...................... 27-1 iv

1.0 INTRODUCTION

The following constitutes a supplement to the Annual Report for the Radiological Environmental Monitoring Program conducted at the Duane Arnold Energy Center, Palo, Iowa in 2001. Results of completed analyses are presented in the attached tables.

For information regarding sampling locations, type and frequency of collection, and sample codes, please refer to Part-I, Tables 5.3 - 5.5 and Figures 5.1 and 5.2.

V

2.0 LISTING OF MISSED SAMPLES Sample Collection Date Location(s) or Period Comments Type Analysis 12-04-01 Sample not ampilable, goats sold; Ml 1-131, Gamma D-93 location dropped from program.

D-101 01-09-01 Sample not available; goat dry.

Ml 1-131, Gamma

_-101 02-06-01 Sample not available; goat dry.

Ml 1-131, Gamrr._

D-101 03-06-01 Sample not available; goat dry.

Ml 1-131, Gamma D-101 04-03-01 Sample not available; goat dry.

MI 1-131, Gamma D-101 12-04-01 Sample not received; goat dry.

MI 1-131, Gamma D-105 07-10-01 Sample not available; container Ml 1-131, Gamma sent to wrong farm.

09-05-01 Sample not available, D-105 Ml 1-131, Gamma 'was missed D-105 09-18-01 Sample not available; location Ml 1-131, Gamma dropped from program, replaced by D-108.

D-15 03-01-01 Power was off from 02-24-01; AP/Al Gross Beta, very low volume due to 40.5 hour5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 1-131 run.

D-2, 5. 7. 10-18-01 Analysis for 1-131 missed by the Al 1-131 laboratory**.

D-8, 11, 15 D-7 12-27-01 Sample lost in shipment.

Al 1-131 D-22, D-41, 2nd Qtr.. 2001 TLDs missing in the field.

TLD Ambient Gamma D-42, D-83 week is required by the ODAM (Table 6.3-1). The

" Collection and analysis of at least five air Iodine samples per requirement for this week was not met vi

3.0 DATA TABLES vii

DUANE ARNOLD Table 1. Airborne particulates, analysis for gross beta.

Location: D-1 (Cedar Rapids)

Units: pCi/m3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected 3 (m ) Gross Beta Collected (m3 ) Gross Beta Required LLD 0.010 0.010 01-04-01 286 0.033 +/- 0.004 07-05-01 283 0.024 +/- 0.004 01-11-01 284 0.029 +/- 0.004 07-12-01 286 0.028 +/- 0.004 01-18-01 286 0.035 +/- 0.004 07-19-01 286 0.025 +/- 0.004 01-25-01 285 0.035 +/- 0.004 07-26-01 286 0.022 +/- 0.004 02-01-01 286 0.023 +/- 0.003 08-02-01 283 0.025 +/- 0.003 02-08-01 285 0.031 +/- 0.004 08-09-01 287 0.037 +/- 0.004 02-15-01 286 0.034 +/- 0.004 08-16-01 284 0.024 +/- 0.003 02-22-01 288 0.041 +/- 0.004 08-23-01 287 0.025 +/- 0.004 03-01-01 282 0.035 +/- 0.004 08-30-01 284 0.028 +/- 0.003 03-08-01 285 0.025 +/- 0.004 09-06-01 286 0.021 +/- 0.003 03-15-01 287 0.016 +/- 0.003 09-13-01 288 0.023 +/- 0.003 03-22-01 280 0.022 +/- 0.003 09-20-01 284 0.030 +/- 0.004 03-29-01 290 0.019 +/- 0.003 09-27-01 281 0.024 +/- 0.004 1st Quarter Mean +/- s.d. 0.029 +/- 0.007 3rd Quarter Mean +/- s.d. 0.026 +/- 0.004 04-05-01 284 0.023

0.003 10-04-01 152 0.058 +/- 0.008 04-12-01 285 0.017

0.003 10-11-01 287 0.030 +/- 0.004 04-19-01 285 0.018 +/- 0.003 10-18-01 285 0.022 +/- 0.003 04-26-01 287 0.021 +/- 0.003 10-25-01 286 0.031 +/- 0.004 05-03-01 281 0.023

0.003 11-01-01 287 0.016 +/- 0.003 05-10-01 289 0.017 +/- 0.003 11-08-01 285 0.028 +/- 0.003 05-17-01 285 0.018 +/- 0.003 11-15-01 286 0.040 +/- 0.005 05-24-01 286 0.012 +/- 0.003 11-21-01 244 0.039 +/- 0.004 05-31-01 286 0.010 +/- 0.003 11-29-01 327 0.027 +/- 0.003 06-06-01 245 0.009 +/- 0.003 12-06-01 286 0.041 +/- 0.004 06-13-01 283 0.021 +/- 0.003 12-13-01 285 0.038 +/- 0.004 06-21-01 330 0.020 +/- 0.003 12-20-01 285 0.039 +/- 0.004 06-28-01 284 0.025 +/- 0.004 12-27-01 286 0.041 +/- 0.004 01-03-02 286 0.031 +/- 0.004 2nd Quarter Mean +/- s.d. 0.018 +/- 0.005 4th Quarter Mean +/- s.d. 0.034 +/- 0.010 Cumulative Average 0.027 Previous Annual Average 0.028 "Low volume; no reason given for reading of 89.4 hr. run.

1- 1

DUANE ARNOLD Table 2. Airborne particulates and charcoal canisters, analyses for gross beta and iodine- 131'.

Location: D-2 (Marion)

Units: pCi/m3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (M 3) Gross Beta Collected (m3 ) Gross Beta Required LLD 0.010 0.010 01-04-01 286 0.036 +/- 0.004 07-05-01 284 0.021 +/- 0.004 01-11-01 284 0.027 +/- 0.004 07-12-01 287 0.024 +/- 0.004 01-18-01 286 0.034 +/- 0.004 07-19-01 285 0.028 +/- 0.004 01-25-01 285 0.037 +/- 0.004 07-26-01 288 0.019 +/- 0.003 02-01-01 287 0.021 +/- 0.003 08-02-01 283 0.026 +/- 0.003 02-08-01 283 0.027 +/- 0.004 08-09-01 287 0.033 +/- 0.004 02-15-01 286 0.032 +/- 0.004 08-16-01 285 0.024 +/- 0.003 02-22-01 287 0.036 +/- 0.004 08-23-01 287 0.021 +/- 0.004 03-01-01 283 0.032 +/- 0.004 08-30-01 284 0.030 +/- 0.004 03-08-01 285 0.032 +/- 0.004 09-06-01 286 0.018 +/- 0.003 03-15-01 288 0.019 +/- 0.003 09-13-01 288 0.023 +/- 0.003 03-22-01 281 0.023 +/- 0.003 09-20-01 284 0.028 +/- 0.003 03-29-01 288 0.024 +/- 0.003 09-27-01 286 0.021 +/- 0.004 1st Quarter Mean +/- s.d. 0.029 +/- 0.006 3rd Quarter Mean +/- s.d. 0.024 +/- 0.004 04-05-01 285 0.025 +/- 0.003 10-04-01 284 0.027 +/- 0.004 04-12-01 284 0.018 +/- 0.004 10-11-01 287 0.024 +/- 0.003 04-19-01 285 0.018 +/- 0.003 10-18-01 285 0.021 +/- 0.003 04-26-01 288 0.024 +/- 0.003 10-25-01 286 0.030 +/- 0.003 05-03-01 281 0.022 +/- 0.003 11-01-01 286 0.016 +/- 0.003 05-10-01 289 0.015 +/- 0.003 11-08-01 285 0.026 +/- 0.003 05-17-01 284 0.018 +/- 0.003 11-15-01 286 0.032 +/- 0.004 05-24-01 285 0.014 +/- 0.003 11-21-01 245 0.033 +/- 0.004 05-31-01 288 0.011 +/- 0.003 11-29-01 327 0.027 +/- 0.003 06-06-01 244 0.008 +/- 0.003 12-06-01 286 0.035 +/- 0.004 06-13-01 284 0.023 +/- 0.003 12-13-01 285 0.036 +/- 0.004 06-21-01 329 0.041 +/- 0.004 12-20-01 285 0.030 +/- 0.004 06-28-01 283 0.025 +/- 0.004 12-27-01 283 0.039 +/- 0.004 01-03-02 287 0.029 +/- 0.003 2nd Quarter Mean +/- s.d. 0.020 +/- 0.008 4th Quarter Mean +/- s.d. 0.029 +/- 0.006 Cumulative Average 0.026 Previous Annual Average 0.029 "Iodine-131 concentrations are <0.07 pCi/m3 unless noted otherwise.

bIodine- 131 not counted; charcoal cartridges inadvertantly lost at laboratory.

2-1

DUANE ARNOLD Table 3. Airborne particulates, analysis for gross beta.

Location: D-33 (Hiawatha)

Units: pCi/m Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (m3) Gross Beta Collected (m3 ) Gross Beta Required LLD 0.010 0.010 01-04-01 287 0.031 + 0.004 07-05-01 283 0.021

0.004 01-11-01 284 0.022 + 0.004 07-12-01 287 0.023

0.004 01-18-01 286 0.034 + 0.004 07-19-01 289 0.023

0.004 01-25-01 285 0.036 +/- 0.004 07-26-01 283 0.020

0.003 02-01-01 287 0.022 +/- 0.003 08-02-01 283 0.028

0.004 02-08-01 284 0.024 + 0.004 08-09-01 287 0.038

0.004 02-15-01 286 0.030 +/- 0.004 08-16-01 285 0.021

0.003 02-22-01 286 0.040 +/- 0.004 08-23-01 287 0.021 +/- 0.004 03-01-01 285 0.029 + 0.004 08-30-01 284 0.031

0.004 03-08-01 285 0.024 + 0.003 09-06-01 285 0.020 +/- 0.003 03-15-01 286 0.018 +/-0.003 09-13-01 287 0.024 +/- 0.003 03-22-01 283 0.016 +0.003 09-20-01 285 0.026 +/- 0.003 03-29-01 288 0.025 - 0.003 09-27-01 285 0.021 +/- 0.004 1st Quarter Mean +/- s.d. 0.027 +/- 0.007 3rd Quarter Mean +/- s.d. 0.024 +/- 0.005 04-05-01 283 0.021 +/- 0.003 10-04-01 284 0.024

0.004 04-12-01 286 0.017 +/- 0.003 10-11-01 286 0.025

0.003 04-19-01 285 0.018 +/- 0.003 10-18-01 286 0.021

0.003 04-26-01 286 0.021 +/- 0.003 10-25-01 286 0.024

0.003 05-03-01 282 0.021 +/- 0.003 11-01-01 287 0.016

0.003 05-10-01 289 0.015 +/- 0.003 11-08-01 285 0.029

0.003 05-17-01 285 0.016 +/- 0.003 11-15-01 286 0.029

0.004 05-24-01 246 0.012 +/- 0.003 11-21-01 243 0.036

0.004 05-31-01 286 0.006 +/- 0.003 11-29-01 328 0.022

0.003 06-06-01 246 0.009 +/- 0.003 12-06-01 286 0.033 +/- 0.004 06-13-01 197 0.026 + 0.004 12-13-01 285 0.030 +/- 0.004 06-21-01 324 0.018 +/- 0.003 12-20-01 286 0.030 +/- 0.004 06-28-01 281 0.021 + 0.004 12-27-01 283 0.036 +/- 0.004 01-03-02 286 0.026 +/- 0.003 2nd Quarter Mean +/- s.d. 0.017 +/- 0.005 4th Quarter Mean +/- s.d. 0.027 +/- 0.006 Cumulative Average 0.024 Previous Annual Average 0.026 3-1

DUANE ARNOLD Table 4. Airborne particulates and charcoal canisters, analyses for gross beta and iodine- 131a.

Location: D-5 (Palo)

Units: pCi/m3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (m3) Gross Beta Collected (m3) Gross Beta Required LLD 0.0LO 0.010 01-04-01 286 0.035 +/- 0.004 07-05-01 284 0.024 +/- 0.004 01-11-01 284 0.030 +/- 0.004 07-12-01 280 0.026 +/- 0.004 01-18-01 287 0.035 +/- 0.004 07-19-01 286 0.027 +/- 0.004 01-25-01 286 0.037 + 0.004 07-26-01 285 0.023 +/- 0.004 02-01-01 285 0.021 -0.003 08-02-01 284 0.025 +/- 0.003 02-08-01 285 0.030 - 0.004 08-09-01 287 0.035 +/- 0.004 02-15-01 285 0.032 - 0.004 08-16-01 284 0.023 +/- 0.003 02-22-01 285 0.046 - 0.004 08-23-01 288 0.023 +/- 0.004 03-01-01 285 0.031 - 0.004 08-30-01 284 0.032 +/- 0.004 03-08-01 286 0.024.4 0.003 09-06-01 286 0.022 +/- 0.003 03-15-01 284 0.018 -0.003 09-13-01 287 0.026 +/- 0.003 03-22-01 283 0.023 - 0.003 09-20-01 284 0.027 +/- 0.003 03-29-01 289 0.021 - 0.003 09-27-01 285 0.023 +/- 0.004 1st Quarter Mean +/- s.d. 0.029 +/- 0.008 3rd Quarter Mean +/- s.d. 0.026 +/- 0.004 04-05-01 283 0.023 +/- 0.003 10-04-01 284 0.035 +/- 0.004 04-12-01 285 0.015 +/- 0.003 10-11-01 288 0.023 +/- 0.003 04-19-01 286 0.014 +/- 0.003 10-18-01 285 0.023 +/- 0.003 b 04-26-01 285 0.018 +/- 0.003 10-25-01 286 0.032 +/- 0.004 05-03-01 283 0.026 +/- 0.003 11-01-01 287 0.020 +/- 0.004 05-10-01 288 0.016 +/- 0.003 11-08-01 285 0.029 +/- 0.003 05-17-01 285 0.017 +/- 0.003 11-15-01 285 0.040 +/- 0.005 05-24-01 286 0.012 +/- 0.003 11-21-01 245 0.043 +/- 0.005 05-31-01 285 0.013 +/- 0.003 11-29-01 326 0.026 +/- 0.003 06-06-01 252 0.007 +/- 0.003 12-06-01 286 0.042 +/- 0.005 06-13-01 284 0.021 +/- 0.003 12-13-01 285 0.030 +/- 0.004 06-21-01 326 0.019 +/- 0.003 12-20-01 285 0.033 +/- 0.004 06-28-01 286 0.027 +/- 0.004 12-27-01 285 0.036 +/- 0.004 01-03-02 286 0.026 +/- 0.003 2nd Quarter Mean +/- s.d. 0.0 18 +/- 0.006 4th Quarter Mean A: s.d. 0.031 +/- 0.007 Cumulative Average 0.026 Previous Annual Average 0.029

" Iodine-13 1 concentrations are <0.07 pCi/m3 unless noted otherwise.

b Iodine-131 not counted; charcoal cartridges inadvertantly lost at laboratory.

4-1

DUANE ARNOLD Table 5. Airborne particulates, analysis for gross beta.

Location: D-6 (Center Point)

Units: pCi/m3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (m3 ) Gross Beta Collected (m3) Gross Beta Required LLD 0.010 0.010 01-04-01 286 0.038 +/- 0.004 07-05-01 284 0.021 +/- 0.004 01-11-01 284 0.025 +/- 0.004 07-12-01 286 0.023 +/- 0.004 01-18-01 287 0.033 +/- 0.004 07-19-01 287 0.019 +/- 0.003 01-25-01 286 0.040 + 0.004 07-26-01 285 0.019 +/- 0.003 02-01-01 286 0.021 +/- 0.003 08-02-01 284 0.020 +/- 0.003 02-08-01 285 0.033 +/- 0.004 08-09-01 287 0.034 +/- 0.004 02-15-01 285 0.033 +/- 0.004 08-16-01 285 0.020 +/- 0.003 02-22-01 285 0.047 +/- 0.004 08-23-01 287 0.019 +/- 0.003 03-01-01 285 0.029 +/- 0.004 08-30-01 284 0.026 +/- 0.003 03-08-01 286 0.020 +/- 0.003 09-06-01 286 0.020 +/- 0.003 03-15-01 284 0.020 +/- 0.003 09-13-01 287 0.021 +/- 0.003 03-22-01 283 0.020 +/- 0.003 09-20-01 284 0.025 +/- 0.003 03-29-01 289 0.022 +/- 0.003 09-27-01 286 0.019 +/- 0.004 1st Quarter Mean +/- s.d. 0.029 +/- 0.009 3rd Quarter Mean +/- s.d. 0.022 +/- 0.004 04-05-01 283 0.022 +/- 0.003 10-04-01 284 0.026 : 0.004 04-12-01 285 0.014 +/- 0.003 10-11-01 286 0.024 : 0.003 04-19-01 286 0.017 +/- 0.003 10-18-01 285 0.022 +/- 0.003 04-26-01 286 0.024 +/- 0.003 10-25-01 285 0.028 +/- 0.003 05-03-01 283 0.021 +/- 0.003 11-01-01 287 0.021 +/- 0.004 05-10-01 288 0.016 +/- 0.003 11-08-01 285 0.026 +/- 0.003 05-17-01 281 0.017 +/- 0.003 11-15-01 285 0.037 +/- 0.004 05-24-01 286 0.013 +/- 0.003 11-21-01 245 0.037 +/- 0.004 05-31-01 285 0.009 +/- 0.003 11-29-01 326 0.024 +/- 0.003 06-06-01 246 0.007 +/- 0.003 12-06-01 286 0.035 +/- 0.004 06-13-01 284 0.021 +/- 0.003 12-13-01 285 0.036 +/- 0.004 06-21-01 327 0.019 +/- 0.003 12-20-01 285 0.036 + 0.004 06-28-01 218 0.026 +/- 0.005 12-27-01 285 0.032 + 0.004 01-03-02 286 0.028 +/- 0.003 2nd Quarter Mean +/- s.d. 0.017 +/- 0.006 4th Quarter Mean +/- s.d. 0.029 +/- 0.006 Cumulative Average 0.025 Previous Annual Average 0.029 5-1

DUANE ARNOLD Table 6. Airborne particulates and charcoal canisters, analyses for gross beta and iodine- 131 a.

Location: D-73 (Shellsburg)

Units: pCi/m Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (M3) Gross Beta Collected (m3) Gross Beta Required LLD 0.010 0.010 01-04-01 286 0.033 +/- 0.004 07-05-01 284 0.021 +/- 0.004 01-11-01 284 0.027 +/- 0.004 07-12-01 280 0.028 +/- 0.004 01-18-01 286 0.033 +/- 0.004 07-19-01 290 0.031 +/- 0.004 01-25-01 285 0.034 +/- 0.004 07-26-01 272 0.026 + 0.004 02-01-01 286 0.022 +/- 0.003 08-02-01 284 0.026 +/- 0.003 02-08-01 285 0.027 +/- 0.004 08-09-01 287 0.039 +/- 0.004 02-15-01 285 0.032 +/- 0.004 08-16-01 285 0.025 +/- 0.003 02-22-01 285 0.041 +/- 0.004 08-23-01 288 0.022 +/- 0.004 03-01-01 285 0.033 +/- 0.004 08-30-01 284 0.030 +/- 0.004 03-08-01 286 0.023 +/- 0.003 09-06-01 286 0.017 +/- 0.003 03-15-01 284 0.017 +/- 0.003 09-13-01 287 0.025 +/- 0.003 03-22-01 283 0.022 +/- 0.003 09-20-01 284 0.024 +/- 0.003 03-29-01 289 0.023 +/- 0.003 09-27-01 285 0.021 +/- 0.004 1st Quarter Mean +/- s.d. 0.028 4- 0.007 3rd Quarter Mean +/- s.d. 0.026 +/- 0.006 04-05-01 283 0.019 +/- 0.003 10-04-01 284 0.030 +/- 0.004 04-12-01 285 0.017 +/- 0.003 10-11-01 286 0.020 +/- 0.003 04-19-01 286 0.020 +/- 0.003 10-18-01 285 0.022 +/- 0.003 b 04-26-01 286 0.021 +/- 0.003 10-25-01 285 0.028 +/- 0.003 05-03-01 283 0.026 +/- 0.003 11-01-01 287 0.017 +/- 0.003 05-10-01 288 0.016 +/- 0.003 11-08-01 286 0.026 +/- 0.003 05-17-01 285 0.019 +/- 0.003 11-15-01 285 0.035 +/- 0.004 05-24-01 285 0.013 +/- 0.003 11-21-01 245 0.037 +/- 0.004 05-31-01 285 0.013 +/- 0.003 11-29-01 326 0.024 +/- 0.003 06-06-01 246 0.007 +/- 0.003 12-06-01 286 0.035 +/- 0.004 06-13-01 284 0.021 +/- 0.003 12-13-01 285 0.035 +/- 0.004 06-21-01 327 0.018 +/- 0.003 12-20-01 285 0.035 +/- 0.004 06-28-01 286 0.026 +/- 0.004 12-27-01 285 0.044 +/- 0.004 01-03-02 286 0.026 +/- 0.003 2nd Quarter Mean +/- s.d. 0.018 +/- 0.005 4th Quarter Mean +/- s.d. 0.030 +/- 0.008 Cumulative Average 0.026 Previous Annual Average 0.026 aIodine-13 1 concentrations are <0.07 pCi/m3 unless noted otherwise.

bIodine-131 not counted; charcoal cartridges inadvertantly lost at laboratory.

'Iodine cartridge not received.

6-1

DUANE ARNOLD Table 7. Airborne particulates and charcoal canisters, analyses for gross beta and iodine- 131 a.

Location: D-8 (Urbana)

Units: pCi/m3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (M3) Gross Beta Collected (m3 ) Gross Beta Required LLD 0.010 0.010 01-04-01 286 0.037 +/- 0.004 07-05-01 284 0.021 +/- 0.004 01-11-01 284 0.031 +/- 0.004 07-12-01 286 0.027 +/- 0.004 01-18-01 287 - 0.041 +/- 0.004 07-19-01 287 0.028 +/- 0.004 01-25-01 285 0.046 +/- 0.004 07-26-01 283 0.019 +/- 0.003 02-01-01 286 0.024 +/- 0.003 08-02-01 284 0.024 +/- 0.003 02-08-01 285 0.023 +/- 0.003 08-09-01 287 0.041 :E 0.004 02-15-01 285 0.034 +/- 0.004 08-16-01 284 0.024 :E 0.003 02-22-01 285 0.049 +/- 0.004 08-23-01 288 0.022 + 0.004 03-01-01 284 0.035 +/- 0.004 08-30-01 284 0.031 - 0.004 03-08-01 286 0.026 +/- 0.004 09-06-01 286 0.020 - 0.003 03-15-01 284 0.017 +/- 0.003 09-13-01 287 0.024 - 0.003 03-22-01 283 0.022 +/- 0.003 09-20-01 284 0.023 - 0.003 03-29-01 289 0.023 +/- 0.003 09-27-01 285 0.022 - 0.004 1st Quarter Mean +/- s.d. 0.031 +/- 0.010 3rd Quarter Mean +/- s.d. 0.025 +/- 0.006 04-05-01 283 0.023 +/- 0.003 10-04-01 284 0.029 +/- 0.004 04-12-01 285 0.015 +/- 0.003 10-11-01 286 0.024 +/- 0.003 04-19-01 286 0.019 +/- 0.003 10-18-01 285 0.023 +/- 0.003 b 04-26-01 285 0.022 +/- 0.003 10-25-01 285 0.032 +/- 0.004 05-03-01 283 0.023 +/- 0.003 11-01-01 287 0.019 +/- 0.004 05-10-01 288 0.018 +/- 0.003 11-08-01 285 0.029 +/- 0.003 05-17-01 284 0.020 +/- 0.004 11-15-01 285 0.042 +/- 0.005 05-24-01 285 0.014 +/- 0.003 11-21-01 245 0.042 +/- 0.004 05-31-01 285 0.009 +/- 0.003 11-29-01 326 0.026 =E0.003 06-06-01 246 0.009 +/- 0.003 12-06-01 286 0.036 +/- 0.004 06-13-01 284 0.024 +/- 0.003 12-13-01 285 0.035 +/- 0.004 06-21-01 323 0.024 +/- 0.003 12-20-01 285 0.037 +/- 0.004 06-28-01 285 0.025 +/- 0.004 12-27-01 285 0.037 +/- 0.004 01-03-02 286 0.028 +/- 0.003 2nd Quarter Mean +/- s.d. 0.019 +/- 0.006 4th Quarter Mean A s.d. 0.031 +/- 0.007 Cumulative Average 0.027 Previous Annual Average 0.028

" Iodine-13 1 concentrations are <0.07 pCi/m3 unless noted otherwise.

bIodine-131 not counted; charcoal cartridges inadvertantly lost at laboratory.

7-1

DUANE ARNOLD Table 8. Airborne particulates, analysis for gross beta.

Location: D-10 (Atkins)

Units: pCi/m 3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (m3 ) Gross Beta Collected (m3 ) Gross Beta Required LLD 0.010 0.010 01-04-01 285 0.034 +/- 0.004 07-05-01 283 0.023

0.004 01-11-01 283 0.023 +/- 0.004 07-12-01 287 0.022

0.003 01-18-01 286 - 0.033 +/- 0.004 07-19-01 285 0.026 *- 0.004 01-25-01 285 0.035 +/- 0.004 07-26-01 287 0.021

0.003 02-01-01 287 0.018 +/- 0.003 08-02-01 283 0.026

0.003 02-08-01 280 0.026 +/- 0.004 08-09-01 286 0.035

0.004 02-15-01 286 0.034 + 0.004 08-16-01 285 0.022

0.003 02-22-01 288 0.040 +/- 0.004 08-23-01 288 0.021

0.004 03-01-01 282 0.032 +/- 0.004 08-30-01 284 0.033

0.004 03-08-01 285 0.021 +/- 0.003 09-06-01 285 0.022 +/- 0.003 03-15-01 287 0.022 +/- 0.003 09-13-01 288 0.023 +/- 0.003 03-22-01 280 0.021 +/- 0.003 09-20-01 284 0.027 + 0.003 03-29-01 289 0.023 +/- 0.003 09-27-01 285 0.020 +/- 0.004 1st Quarter Mean +/- s.d. 0.028 +/- 0.007 3rd Quarter Mean +/- s.d. 0.025 +/- 0.005 04-05-01 284 0.020

0.003 10-04-01 285 0.029 +/- 0.004 04-12-01 286 0.015

0.003 10-11-01 287 0.025 +/- 0.003 04-19-01 284 0.021

0.003 10-18-01 286 0.024 +/- 0.003 04-26-01 167 a 0.024

0.005 10-25-01 284 0.033 +/- 0.004 05-03-01 82 b 0.033 - 0.009 11-01-01 288 0.022 +/- 0.004 05-10-01 289 0.018 +/- 0.004 11-08-01 286 0.028 +/- 0.003 05-17-01 285 0.019 +/- 0.003 11-15-01 285 0.043 +/- 0.005 05-24-01 286 0.012 +/- 0.003 11-21-01 244 0.040 +/- 0.004 05-31-01 287 0.010 +/- 0.003 11-29-01 327 0.025 +/- 0.003 06-06-01 244 0.008 +/- 0.003 12-06-01 286 0.038 +/- 0.004 06-13-01 285 0.022 +/- 0.003 12-13-01 285 0.036 +/- 0.004 06-21-01 327 0.021 +/- 0.003 12-20-01 285 0.038 +/- 0.004 06-28-01 285 0.023 +/- 0.004 12-27-01 284 0.043 +/- 0.004 01-03-02 286 0.028 +/- 0.003 2nd Quarter Mean +/- s.d. 0.019 +/- 0.007 4th Quarter Mean +/- s.d. 0.032 +/- 0.007 Cumulative Average 0.026 Previous Annual Average 0.028 a Low volume; electricity off due to storm damage.

bLow volume; electric repaired 05-01-01.

8-1

DUANE ARNOLD Table 9. Airborne particulates and charcoal canisters, analyses for gross beta and iodine-13 1'.

Location: D- 11 (Toddville)

Units: pCi/m3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (m3) Gross Beta Collected (m3) Gross Beta Required LLD 0.010 0.010 01-04-01 287 0.037 +/- 0.004 07-05-01 283 0.025 + 0.004 01-11-01 284 0.029 +/- 0.004 07-12-01 183 0.039 +/- 0.006 01-18-01 286 0.037 +/- 0.004 07-19-01 287 0.031 +/- 0.004 01-25-01 284 0.039 +/- 0.004 07-26-01 286 0.022 +/- 0.004 02-01-01 286 0.022 +/- 0.003 08-02-01 284 0.029 +/- 0.004 02-08-01 285 0.027 +/- 0.004 08-09-01 286 0.038 +/- 0.004 02-15-01 285 0.031 +/- 0.004 08-16-01 286 0.021 +/- 0.003 02-22-01 286 0.042 +/- 0.004 08-23-01 287 0.024 +/- 0.004 03-01-01 284 0.035 +/- 0.004 08-30-01 284 0.019 +/- 0.003 03-08-01 285 0.027 +/- 0.004 09-06-01 286 0.018 +/- 0.003 03-15-01 285 0.019 +/- 0.003 09-13-01 287 0.023 +/- 0.003 03-22-01 282 0.017 +/- 0.003 09-20-01 285 0.029 +/- 0.003 03-29-01 289 0.023 +/- 0.003 09-27-01 285 0.022 + 0.004 1st Quarter Mean +/- s.d. 0.030 +/- 0.008 3rd Quarter Mean +/- s.d. 0.026 +/- 0.007 04-05-01 284 0.020 +/- 0.003 10-04-01 284 0.029 +/- 0.004 04-12-01 286 0.018 +/- 0.003 10-11-01 286 0.025 +/- 0.003 04-19-01 285 0.019 +/- 0.003 10-18-01 285 0.023 +/- 0.003 04-26-01 287 0.023 +/- 0.003 10-25-01 286 0.028 +/- 0.003 05-03-01 281 0.023 +/- 0.003 11-01-01 287 0.017 4: 0.003 05-10-01 289 0.017 +/- 0.003 11-08-01 285 0.033 +/- 0.004 05-17-01 275 0.019 +/- 0.004 11-15-01 285 0.039 +/- 0.005 05-24-01 287 0.012 +/- 0.003 11-21-01 244 0.040 +/- 0.004 05-31-01 285 0.010 +/- 0.003 11-29-01 327 0.030 +/- 0.003 06-06-01 247 0.006 +/- 0.003 12-06-01 287 0.039 +/- 0.004 06-13-01 284 0.022 +/- 0.003 12-13-01 285 0.036 +/- 0.004 06-21-01 328 0.021 +/- 0.003 12-20-01 285 0.037 +/- 0.004 06-28-01 285 0.024 +/- 0.004 12-27-01 284 0.037 +/- 0.004 01-03-02 286 0.031 +/- 0.004 2nd Quarter Mean +/- s.d. 0.018 +/- 0.005 4th Quarter Mean +/- s.d. 0.032 +/- 0.007 Previous Annual Averane 0.027 "aIodine-131 concentrations are <0.07 pCi/m3 unless noted otherwise.

bVolume low; electric off due to storm.

'Iodine-131 not counted; charcoal cartridges inadvertantly lost at laboratory.

9-1

DUANE ARNOLD Table 10. Airborne particulates, analysis for gross beta.

Location: D-13 Units: pCi/m3 Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (mi) Gross Beta Collected (m') Gross Beta Required LLD 0.O10 0.010 01-04-01 286 0.036 +/- 0.004 07-05-01 284 0.023 +/- 0.004 01-11-01 284 0.025 +/- 0.004 07-12-01 286 0.028 +/- 0.004 01-18-01 287 0.029 +/- 0.004 07-19-01 287 0.023 +/- 0.004 01-25-01 286 0.041 +/- 0.004 07-26-01 284 0.019 +/- 0.003 02-01-01 286 0.021 +/- 0.003 08-02-01 284 0.024 +/- 0.003 02-08-01 285 0.027 +/- 0.004 08-09-01 287 0.039 +/- 0.004 02-15-01 285 0.026 +/- 0.004 08-16-01 285 0.023 +/- 0.003 02-22-01 285 0.043 +/- 0.004 08-23-01 287 0.019 +/- 0.003 03-01-01 285 0.035 +/- 0.004 08-30-01 284 0.029 +/- 0.003 03-08-01 286 0.026 +/- 0.004 09-06-01 286 0.024 +/- 0.003 03-15-01 284 0.020 +/- 0.003 09-13-01 287 0.025 +/- 0.003 03-22-01 283 0.021 +/- 0.003 09-20-01 284 0.028 +/- 0.003 03-29-01 289 0.025 +/- 0.003 09-27-01 286 0.021 +/- 0.004 1st Quarter Mean +/- s.d. 0.029 +/- 0.008 3rd Quarter Mean +/- s.d. 0.025 +/- 0.005 04-05-01 284 0.020 +/- 0.003 10-04-01 284 0.028 +/- 0.004 04-12-01 285 0.017 +/- 0.003 10-11-01 286 0.027 +/- 0.003 04-19-01 285 0.020 +/- 0.003 10-18-01 285 0.024 +/- 0.003 04-26-01 286 0.024 +/- 0.003 10-25-01 285 0.030 +/- 0.003 05-03-01 281 0.023 +/- 0.003 11-01-01 287 0.017 +/- 0.003 05-10-01 288 0.020 +/-E0.004 11-08-01 285 0.028 +/- 0.003 05-17-01 281 0.022 +/- 0.004 11-15-01 285 0.037 +/- 0.004 05-24-01 285 0.016 +/- 0.003 11-21-01 245 0.034 +/- 0.004 05-31-01 285 0.011 +/- 0.003 11-29-01 326 0.026 +/- 0.003 06-06-01 246 0.011 +/- 0.003 12-06-01 286 0.045 +/- 0.005 06-13-01 284 0.023 +/- 0.003 12-13-01 285 0.036 +/- 0.004 06-21-01 327 0.022 +/- 0.003 12-20-01 285 0.037 +/- 0.004 06-28-01 286 0.026 +/- 0.004 12-27-01 285 0.040 +/- 0.004 01-03-02 289 0.030 +/- 0.004 2nd Quarter Mean +/- s.d. 0.020 +/- 0.005 4th Quarter Mean +/- s.d. 0.031 +/- 0.007 Cumulative Average 0.026 Previous Annual Average m 0.027 10-1

DUANE ARNOLD Table 11. Airborne particulates and charcoal canisters, analyses for gross beta and iodine- 131'.

Location: D-15 3

(On-site)

Units: pCi/m Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (M3) Gross Beta Collected (m.3) Gross Beta Required LLD 0.010 0.010 01-04-01 286 0.033 +/- 0.004 07-05-01 285 0.021 +/- 0.004 01-11-01 284 0.026 +/- 0.004 07-12-01 280 0.024 +/- 0.004 01-18-01 286 0.033 +/- 0.004 07-19-01 286 0.025 +/- 0.004 01-25-01 286 0.038 +/- 0.004 07-26-01 284 0.021 +/- 0.003 02-01-01 285 0.024 +/- 0.003 08-02-01 284 0.025 +/- 0.003 02-08-01 285 0.026 +/- 0.004 08-09-01 287 0.035 +/- 0.004 02-15-01 285 0.029 + 0.004 08-16-01 284 0.020 +/- 0.003 02-22-01 285 0.039 +/- 0.004 08-23-01 287 0.019 +/- 0.003 03-01-01 NSb 08-30-01 285 0.031 +/- 0.004 03-08-01 80 0.014 +/- 0.009 09-06-01 286 0.020 +/- 0.003 03-15-01 284 0.018 +/- 0.003 09-13-01 284 0.022 +/- 0.003 03-22-01 283 0.018 +/- 0.003 09-20-01 285 0.026 +/- 0.003 03-29-01 289 0.021 +/- 0.003 09-27-01 288 0.019 +/- 0.004 1st Quarter Mean +/- s.d. 0.027 +/- 0.008 3rd Quarter Mean +/- s.d. 0.024 +/- 0.005 04-05-01 283 0.019 +/- 0.003 10-04-01 284 0.032 +/- 0.004 04-12-01 285 0.013 +/- 0.003 10-11-01 285 0.025 +/- 0.003 04-19-01 286 0.016 +/- 0.003 10-18-01 286 0.022 +/- 0.003 04-26-01 285 0.019 +/- 0.003 10-25-01 286 0.031 +/- 0.004 05-03-01 284 0.019 +/- 0.003 11-01-01 287 0.018 +/- 0.004 05-10-01 287 0.017 +/- 0.003 11-08-01 284 0.030 +/- 0.004 05-17-01 286 0.015 +/- 0.003 11-15-01 286 0.035 +/- 0.004 05-24-01 285 0.010 +/- 0.003 11-21-01 244 0.040 +/- 0.004 05-31-01 285 0.011 +/- 0.003 11-29-01 327 0.029 +/- 0.003 06-06-01 246 0.008 +/- 0.003 12-06-01 286 0.038 +/- 0.004 06-13-01 239 0.018 +/- 0.003 12-13-01 285 0.034 +/- 0.004 06-21-01 119 0.025 +/- 0.006 12-20-01 286 0.039 +/- 0.004 06-28-01 285 0.020 +/- 0.004 12-27-01 285 0.042 +/- 0.004 01-03-02 286 0.033 +/- 0.004 2nd Quarter Mean +/- s.d. 0.016 +/- 0.005 4th Quarter Mean +/- s.d. 0.032 +/- 0.007 Cumulative Average 0.025 Previous Annual Averagze 0.025 a Iodine-131 concentrations are <0.07 pCi/m3 unless noted otherwise.

b "NS" = No sample; electricity off. Refer to Table 2, "Listing of Missed Samples."

Iodine- 131 not counted; charcoal cartridges inadvertantly lost at laboratory.

11-1

DUANE ARNOLD Table 12. Airborne particulates, analysis for gross beta.

Location: D-163 (On-site)

Units: pCi/m Collection: Continuous, weekly exchange.

Date Volume Date Volume Collected (M3) Gross Beta Collected (M3 ) Gross Beta Required LLD 0.0o10 0.010 01-04-01 286 0.037 S0.004 07-05-01 285 0.022 +/- 0.004 01-11-01 284 0.025

0.004 07-12-01 286 0.024 +/- 0.004 01-18-01 286 0.033

0.004 07-19-01 286 0.026 +/- 0.004 01-25-01 286 0.037

0.004 07-26-01 284 0.023 +/- 0.004 02-01-01 286 0.020 :E 0.003 08-02-01 284 0.026 +/- 0.003 02-08-01 285 0.027

0.004 08-09-01 285 0.038 +/- 0.004 02-15-01 285 0.030

0.004 08-16-01 284 0.023 +/- 0.003 02-22-01 285 0.043

0.004 08-23-01 288 0.022 +/- 0.004 03-01-01 286 0.035

0.004 08-30-01 285 0.031 +/- 0.004 03-08-01 287 0.028 +/- 0.004 09-06-01 286 0.022 +/- 0.003 03-15-01 284 0.020

0.003 09-13-01 284 0.025 +/- 0.003 03-22-01 283 0.021

0.003 09-20-01 285 0.030 +/- 0.004 03-29-01 289 0.026 +/- 0.003 09-27-01 287 0.024 +/- 0.004 1st Quarter Mean +/- s.d. 0.029 +/- 0.007 3rd Quarter Mean +/- s.d. 0.026 +/- 0.005 04-05-01 283 0.023 +/- 0.003 10-04-01 284 0.032 +/- 0.004 04-12-01 285 0.019 +/- 0.004 10-11-01 285 0.024 +/- 0.003 04-19-01 286 0.018 +/- 0.003 10-18-01 286 0.023 +/- 0.003 04-26-01 284 0.024 +/- 0.003 10-25-01 286 0.036 +/- 0.004 05-03-01 284 0.025 +/- 0.003 11-01-01 287 0.020 +/- 0.004 05-10-01 287 0.018 +/- 0.003 11-08-01 284 0.033 +/- 0.004 05-17-01 285 0.016 +/- 0.003 11-15-01 287 0.039 +/- 0.004 05-24-01 285 0.012 +/- 0.003 11-21-01 244 0.040 +/- 0.004 05-31-01 285 0.009 +/- 0.003 11-29-01 327 0.030 +/- 0.003 06-06-01 246 0.009 +/- 0.003 12-06-01 286 0.042 +/- 0.005 06-13-01 284 0.023 +/- 0.003 12-13-01 285 0.031 +/- 0.004 06-21-01 326 0.021 +/- 0.003 12-20-01 286 0.037 +/- 0.004 06-28-01 285 0.023 +/- 0.004 12-27-01 285 0.039 +/- 0.004 01-03-02 286 0.035 +/- 0.004 2nd Quarter Mean +/- s.d. 0.018 +/- 0.006 4th Quarter Mean +/- s.d. 0.033 +/- 0.007 Cumulative Average 0.027 Previous Annual Average 0.027 12- 1

DUANE ARNOLD Table 13. Airborne particulates, analyses for gamma-emitting isotopes.

Collection: Quarterly Composite Units: pCi/m3 Location

_v D-1 Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP-2829 DAP-5848 DAP-9171 DAP-1 1849 Volume (m3) 3710 3710 3705 3867 Be-7 0.054 k 0.017 0.069 1 0.018 0.079 0.016 0.058 +/- 0.014 Nb-95 0.0007 0.0012 0.0015 0.0016 Zr-95 0.0012 0.0015 0.0013 0.0010 Ru-103 o.0o08 0.0010 0.0012 0.0009 Ru-106 0.0069 0.0066 0.0065 0.0055 Cs-134 0.0004 0.0008 0.0010 0.0005 Cs-137 0.0009 0.0005 0.0003 0.0005 Ce-141 0.0027 0.0018 0.0023 0.0013 Ce-144 0.0053 0.0050 0.0043 0.0032 Location D-2 Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP-2830 DAP-5849 DAP-9172 DAP-11850 Volume (M3 ) 3709 3709 3714 3997 Be-7 0.060

0.016 0.077

0.016 0.065 0.016 0.048 0.014 Nb-95 0.0007 0.0012 0.0014 0.0009 Zr-95 0.0009 0.0010 0.0010 0.0013 Ru-103 0.0008 0.0015 0.0011 0.0008 Ru-106 0.0073 0.0044 0.0056 0.0073 Cs-134 0.0004 0.0004 0.0011 0.0008 Cs-137 0.0006 0.0007 0.0005 0.0008 Ce-141 0.0020 0.0017 0.0016 0.0015 Ce-144 0.0051 0.0049 0.0054 0.0046 Tx~cetinn D-3 Location D-3 Quarter Ist Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP-2831 DAP-5850 DAP-9173 DAP-1 1851 Volume (m 3) 3712 3576 3710 3997 Be-7 0.048 + 0.015 0.070 - 0.020 0.077 :h 0.018 0.052

0.013 Nb-95 0.0009 0.0015 0.0011 0.0007 Zr-95 0.0078 0.0023 0.0016 0.0011 Ru-103 <C 0.0009 0.0010 0.0011 0.0009 Ru-106 0.0054 0.0060 0.0042 0.0045

<C Cs-134 0.0006 0.0006 0.0012 0.0007

<C Cs-137 0.0009 0.0003 0.0008 0.0004 Ce-141 0.0023 0.0016 0.0020 0.0014 Ce-144 0.0054 0.0055 0.0048 0.0030 13-1

DUANEF ARNOLD Table 13. Airborne particulates, analyses for gamma-emitting isotopes.

Collection: Quarterly Composite Units: pCi/m.3 Location D-5 Location Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP-2832 DAP-5851,2 DAP-9174 DAP-1 1852 Volume (m 3 ) 3710 3714 3704 3998 Be-7 0.045 +/- 0.017 0.070 +/- 0.011 0.084 +/- 0.018 0.055 +/- 0.012 0.0006 < K 0.0011 Nb-95 0.0015 0.0011 Zr-95 0.0008 < 0.0009 < 0.0012 0.0010

< 0.0006 < 0.0011 Ru-103 0.0011 < -0.0009

< K 0.0052 < 0.0047 Ru-106 0.0062 < 0.0045 K K 0.0004 Cs-134 0.0005 < 0.0004 < 0.0010

< 0.0003 K 0.0007 Cs-137 0.0003 < 0.0008

< 0.0016 0.0022 0.0020 Ce-141 < 0.0006 Ce-144 0.0045 0.0040 0.0029 0.0026 Location D-6 Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP-2833,4 DAP-5853 DAP-9175 DAP-11853 Volume (m3) 3711 3638 3712 3995 Be-7 0.050 +/- 0.013 0.075

0.018 0.072

0.019 0.053

0.013 K 0.0008 < K < 0.0013 Nb-95 0.0013 0.0008

< 0.0014 K 0.0009 K 0.0014 Zr-95 0.0009 K Ru-103 K < < 0.0012 0.0010 0.0008 0.0011 K Ru-106 < 0.0071 < 0.0056 K 0.0061 0.0056 K 0.0005 < < 0.0010 0.0005 Cs-134 0.0004 <

K 0.0006 < 0.0009 0.0005 Cs-137 0.0005 K

< 0.0011 < 0.0026 K 0.0012 Ce-141 0.0022 Ce-144 0.0039 0.0056 0.0057 0.0033 Location D-7 Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP-2835 DAP-5854 DAP-9176 DAP-1 1854 Volume (M 3) 3709 3709 3696 3996 Be-7 0.058

0.019 0.087

0.019 0.079

0.020 0.048

0.014 Nb-95 K 0.0007 0.0014 0.0008 0.0005 K 0.0018 0.0022 0.0009 0.0014 Zr-95 K < <

K 0.0010 0.0012 0.0011 Ru-103 0.0009 < <

Ru-106 < 0.0068 0.0068 0.0037 0.0048 K K Cs-134 0.0004 0.0004 0.0009 0.0008 Cs-137 0.0005 0.0005 0.0007 0.0004

< 0.0020 0.0015 Ce-141 0.0021 0.0022

< 0.0057 0.0054 0.0027 Ce-144 0.0059

,--2

DUANE ARNOLD Table 13. Airborne particulates, analyses for gamma-emitting isotopes.

Collection: Quarterly Composite Units: pCi/m3 Location D-8 Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP-2836 DAP-5855 DAP-9177 DAP-1 1855 Volume (M3 ) 3709 3702 3709 3995 Be-7 0.057 +/- 0.018 0.090 + 0.018 0.071 +/- 0.020 0.052 +/- 0.012 Nb-95 0.0007 0.0017 0.0013 0.0018 Zr-95 0.0008 0.0009 0.0012 0.0018 Ru-103 O.*13 0.0014 0.0010 0.0013 Ru-106 0.0091 0.0073 0.0049 0.0092 Cs-134 0.0009 0.0004 0.0009 0.0005 Cs-137 0.0006 0.0009 0.0006 0.0007 Ce-141 0.0013 0.0027 0.0021 0.0021 Ce-144 0.0049 0.0046 0.0046 0.0062 Location D-10 Location Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP-2837 DAP-5856 DAP-9178 DAP-11856 Volume (M 3) 3703 3391 3710 3998 Be-7 0.060

0.020 0.096 +/- 0.019 0.076 +/- 0.017 0.058 +/- 0.012 Nb-95 0.0010 0.0018 0.0013 0.0011 Zr-95 0.0008 0.0012 0.0018 0.0021 Ru-103 0.0008 0.0012 0.0010 0.0011 Ru- 106 0.0059 0.0052 0.0045 0.0083 Cs-134 0.0005 0.0005 0.0009 0.0009 Cs-137 0.0007 0.0004 0.0005 0.0006 Ce-141 0.0022 0.0029 0.0021 0.0013 Ce-144 0.0028 0.0071 0.0050 0.0045 Location D-11 Location Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP-2838 DAP-5857 DAP-9179 DAP-11857 Volume (M3) 3708 3703 3609 3996 Be-7 0.057

0.012 0.069

0.016 0.094 E 0.018 0.055

0.013 Nb-95 0.0010 0.0013 0.0011 0.0007 Zr-95 0.0014 0.0015 0.0009 0.0010 Ru-103 0.0008 0.0011 0.0008 0.0009 Ru-106 0.0066 0.0089 0.0060 0.0049 Cs-134 0.0004 0.0004 0.0009 0.0008 Cs-137 0.0009 0.0008 0.0003 0.0005 Ce-141 0.0022 0.0013 0.0021 0.0005 Ce-144 0.0061 0.0031 0.0068 0.0018 13-3

DUANE ARNOLD Table 13. Airborne particulates, analyses for gamma-emitting isotopes.

Collection: Quarterly Composite Units: pCi/m3 Location D-13 Location Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP-2839 DAP-5858 DAP-9180 DAP-1 1858 Volume (m3) 3711 3703 3711 3998 Be-7 0.061 : 0.015 0.063 +/- 0.016 0.070 +/- 0.015 0.055 +/- 0.014 Nb-95 0.0016 0.0014 0.0011 0.0011 Zr-95 0.0009 0.0014 0.0014 0.0009 Ru-103 0.0009 0.0012 0.0008 Ru-106 0.0064 0.0077 0.0059 0.0038 Cs-134 0.0004 0.0008 0.0012 0.0006 Cs-137 0.0005 0.0006 0.0005 0.0006 Ce-141 0.0014 0.0015 0.0017 0.0012 Ce-144 0.0032 0.0057 0.0058 0.0045 Location D-15 Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP-2840 DAP-5859 DAP-9181 DAP-1 1859 Volume (m 3) 3218 3455 3705 3997 Be-7 0.051 +/- 0.016 0.073 +/- 0.020 0.081 +/- 0.018 0.045 +/- 0.011 Nb-95 0.0018 0.0017 0.0011 0.0008 Zr-95 0.0016 0.0012 0.0009 0.0008 Ru-103 0.0012 0.0016 0.0012 0.0010 Ru-106 0.0084 0.0085 0.0045 0.0060 Cs-134 0.0004 0.0004 0.0010 0.0008 Cs-137 0.0006 0.0003 0.0005 0.0008 Ce-141 0.0025 0.0014 0.0021 0.0012 Ce-144 0.0073 0.0055 0.0049 0.0037 Location D-16 Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Lab Code DAP-2841 DAP-5860 DAP-9182 DAP- 11860 Volume (m3) 3712 3705 3709 3998 Be-7 0.055 +/- 0.012 0.067

0.016 0.071

0.016 0.055

0.015 Nb-95 0.0007 0.0015 0.0008 0.0007 Zr-95 0.0025 0.0014 0.0009 0.0024 Ru-103 0.0015 0.0009 0.0009 0.0008 Ru-106 0.0059 0.0044 0.0045 0.0066 Cs-134 0.0005 0.0007 0.0009 0.0008 Cs-137 0.0008 0.0005 0.0004 0.0008 Ce-141 0.0011 0.0013 0.0017 0.0009 Ce-144 0.0029 0.0053 0.0053 0.0044 13-4

DUANE ARNOLD Table 14. Area monitors (TLD), Quarterly Units: mRI9l days Air Stations Is LDQar 2nd Qt. 4thQtr.

D-1 (C) 12.1 +/- 0.4 13.2 +/- 0.4 12.4 +/- 0.3 14.1 +/-0.4 D-2 (C) 13.5 +/- 0.2 14.0 +/-0.2 13.8 +/- 0.2 15.9 +/- 0.4 D-3 13.5 +/- 0.2 14.3 +/- 0.2 12.6 +/- 0.3 15.2 +/- 0.5 D-5 13.2-_ 0.2 15.9 +/-0.2 13.9 +/- 0.2 17.6 +/- 0.4 D-6 13.2 +/- 0.2 16.3 +/- 0.2 14.7 +/- 0.2 18.5 +/- 0.4 D-7 11.4 +/--0.2 13.2 +/- 0.2 14.5 +/-0.2 17.3 +/- 0.3 D-8 16.1 +/- 0.2 20.2 +/- 0.2 17.9 +/- 0.2 21.8 +/- 0.3 D-10 15.3 +/-h 0.2 18.8 +/- 0.2 16.3 +/- 0.3 19.6 +/- 0.3 D-11 11.7 +/- 0.2 14.2 +/-h 0.2 12.9 +/-0.3 15.7 +/- 0.6 D-13 (C) 12.1 +/- 0.3 16.3 +/- 0.2 14.5 +/- 0.2 18.5 +/- 0.3 D-15 13.6 +/- 0.2 15.5 +/- 0.2 14.5 +/- 0.2 17.7 +/- 0.4 D-16 13.9 +/- 0.2 14.3 +/- 0.2 14.9 +/- 0.2 16.0 +/- 0.5 Mean +/- s.d. 13.3 +/- 1.4 15.5 +/- 2.2 14.4 +/- 1.5 17.3 +/- 2.1 Within 0.5 mi. of Stack D-18 17.5 +/- 0.2 13.8 +/-0.2 15.0 +/- 0.2 16.8 +/- 0.3 D-19 16.5 +/- 0.2 14.6 +/- 0.2 14.7 +/- 0.2 15.7 +/- 0.6 D-20 18.8 +/- 0.2 15.1 +/- 0.2 16.4 +/- 0.3 18.3 +/- 0.4 D-21 18.9 +/- 0.2 14.6 +/- 0.2 17.5 +/- 0.2 18.1 +/-0.4 D-22 14.6 +/- 0.2 NDa 16.0 +/- 0.4 14.7 +/- 0.4 D-23 13.9 +/- 0.2 13.2 +/-0.4 14.2 +/- 0.2 14.9 +/- 0.3 D-28 14.0 +/-h 0.2 18.8 +/- 0.2 17.7 +/- 0.2 20.6 +/- 0.6 D-29 15.0 +/- 0.2 20.3 +/- 0.2 20.2 +/- 0.3 22.5 +/- 0.4 D-30 15.8 +/- 0.3 19.3 +/- 0.2 20.1 +/- 0.3 20.1 +/--0.4 D-31 20.7 +/- 0.2 23.1 +/- 0.2 20.4 +/- 0.3 24.6 +/- 0.4 D-32 18.5 +/- 0.2 20.7 +/- 0.2 20.4 +/- 0.2 24.2 +/- 0.4 D-82 14.2 +/- 0.2 13.3 +/- 0.4 15.0 +/- 0.2 18.3 +/- 0.3 D-83 14.8 +/- 0.2 NDO 15.7 +/- 0.3 15.7 +/- 0.5 D-84 14.4 +/--0.2 15.1 +/- 0.2 16.4 +/-0.5 18.3 +/- 0.3 D-85 13.9 +/-0.2 15.0 +/- 0.2 16.2 +/- 0.3 18.3 +/- 0.4 D-86 15.6 +/-0.3 15.8 +/- 0.2 17.9 +/- 1.3 18.3 +/- 0.4 D-91 14.3 +/-0.2 16.3 +/--0.2 17.8 +/- 0.3 19.1 +/- 0.4 Mean +/- s.d. 16.0 +/-2.1 16.6 :E 3.1 17.2 +/- 2.1 18.7 +/- 2.9

' Both regular and emergency TLD missing.

14!-1

DU NLD Table 14. Area monitors (TLD), Quarterly Units: mRI9l days Within 1.0 mi. of I..QIL 2ndQt.

Stack D-43 13.2 +/- 0.2 15.0 +/- 0.2 15.4 +/- 0.2 17.7 +/- 0.4 D-44 16.7 +/- 0.2 20.1 +/-0.2 18.0 *0.2 21.8 +/- 0.3 D-45 13.5 +/- 0.2 13.3 +0.2 15.2

0.3 15.4 *0.6 D-46 14.9S-0.2 *- 19.7 +/-0.2 17.9 :- 0.3 22.7

0.3 D-47 15.6 +/- 0.3 20.1 +/-0.2 l .0 =0.3 22.5 - 0.4 D-48 15.0 +/- 0.2 19.3 +/- 0.2 19.2 -0.2 22.8 + 0.3 Mean +/- s.d. 14.8 +/- 1.3 17.9 +/-3.0 17.3 - 1.6 20.5 *3.2 Within 3.0 mi. of Stack D-33 12.1 +/- 0.2 14.7 +/- 0.3 13.7 +/- 0.2 16.4 +/- 0.3 D-34 12.0 +/- 0.3 15.9 -0.2 13.6 +/- 0.2 14.1 +/- 0.5 D-35 12.8

0.2 14.2

0.2 13.9 *L0.2 15.7 +/- 0.5 D-36 12.1 +/- 0.3 15.1 *0.2 14.5 +/- 0.2 18.3 +/- 0.3 D-37 15.9 +/- 0.2 17.7 - 0.4 18.4 +/- 0.2 20.7 *b0.6 D-38 13.2 +/- 0.2 15.9 *0.2 16.1 +/- 0.6 18.8

0.4 D-39 13.9 +/- 0.2 16.3 *0.2 16.6 +/- 0.2 17.5

0.3 D-40 11.4 +/-*0.2 13.3 *0.2 12.9

0.3 14.2

0.3 D-41 13.7 *b0.2 ND1 15.6

0.3 14.1 *-0.4 D-42 14.0 +/- 0.2 NDS 14.0

0.2 15.3

0.5 Mean =*s.d. 13.1

1.3 15.4

1.4 14.9

1.7 16.5

2.3 "Both regular and emergency TLD missing.

b Regular TLD missing; read from emergency TLD.

Iq.- -2

DUANE ARNOLD Table 15. Milk samples, analyses for iodine-131 and gamma emitting isotopes.

Collection: Monthly during non-grazing season (October 1 through April 30): biweekly during grazing season (May 1 through September 30)

Location D-93 Date Lab Concentration (pCi/L)

Collected Code 1-131 K-40 Cs-134 Cs-137 Ba-140 La-140 01-09-01 DMI -80 < 1.0 1797 +/- 199 < 15 < 18 <60 < 15 02-06-01 DMI -860 < 1.0 1300 +/- 114 < 15 < 18 < 60 < 15 03-06-01 DMI -1569 < 1.0 1469.+/--162 < 15 < 18 < 60 < 15 04-03-01 DMI -2425 -- <1.0 -J551 +/- 144 < 15 < 18 <60 < 15 05-01-01 DMI -3400 < 1.0 1631 +/- 135 < 15 < 18 < 60 < 15 05-15-01 DMI -3907 < 1.0 1865 +/- 111 < 15 < 18 < 60 < 15 06-12-01 DMI -4765 < 1.0 1748 +/- 126 < 15 < 18 < 60 < 15 06-26-01 DMI -5210 < 1.0 1667 +/- 127 < 15 < 18 < 60 < 15 07-10-01 DMI -5714 < 1.0 1857 +/- 213 < 15 < 18 < 60 < 15 07-24-01 DMI -6381 < 1.0 1631 +/- 128 < 15 < 18 < 60 < 15 08-07-01 DMI -6904 < 1.0 1594 *236 < 15 < 18 <60 < 15 08-21-01 DMI -7257 < 1.0 1625 +/- 196 < 15 < 18 < 60 < 15 09-05-01 DMI -7722 < 1.0 1787 +/- 135 < 15 < 18 <60 < 15 09-18-01 DMI -8113 < 1.0 1755 J- 129 < 15 < 18 <60 < 15 10-02-01 DMI -8611 < 1.0 1810

137 < 15 < 18 < 60 < 15 11-06-01 DMI -10164 < 1.0 1682

130 < 15 < 18 < 60 < 15 12-04-01 NS" - - - -

Location D-96 Date Lab Concentration (pCi/L)

Collected Code 1-131 K-40 Cs-134 Cs-137 Ba-140 La-140 01-09-01 DMI -81 < 1.0 1275

114 < 15 < 18 <60 < 15 02-06-01 DMI -861 < 1.0 1363*111 < 15 < 18 < 60 < 15 03-06-01 DMI -1570 < 1.0 1394

115 < 15 < 18 <60 < 15 04-03-01 DMI -2426 < 1.0 1320

123 < 15 < 18 < 60 < 15 05-01-01 DMI -3401 < 1.0 1246

178 < 15 < 18 < 60 < 15 05-15-01 DMI -3908 < 1.0 1395

113 < 15 < 18 < 60 < 15 06-12-01 DMI -4766 < 1.0 1491 +/- 180 < 15 < 18 <60 < 15 06-26-01 DMI -5211 < 1.0 1376 *E190 < 15 < 18 < 60 < 15 07-10-01 DMI -5715 < 1.0 1346

168 < 15 < 18 < 60 < 15 07-24-01 DMI -6382 < 1.0 1402

129 < 15 < 18 < 60 < 15 08-07-01 DMI -6905 < 1.0 1192 165 < 15 < 18 < 60 < 15 08-21-01 DMI -7258 < 1.0 1385 188 < 15 < 18 < 60 < 15 09-05-01 DMI -7723 < 1.0 1483 *123 < 15 < 18 < 60 < 15 09-18-01 DMI -8114 < 1.0 1418 109 < 15 < 18 < 60 < 15 10-02-01 DMI -8612 < 1.0 1466 214 < 15 < 18 < 60 < 15 11-06-01 DMI 10165,6 < 1.0 1385 *103 < 15 < 18 < 60 < 15 12-04-01 DMI -10755 < 1.0 1264 183 < 15 < 18 < 60 < 15 3

NS= No sample; sample not available. See Table 2.0, "Listing of Missed Samples."

15-1

DUANT ARNOLD Table 15. Milk samples, analyses for iodine-131 and gamma emitting isotopes.

Collection: Monthly during non-grazing season (October 1 through April 30): biweekly during grazing season (May 1 through September 30)

Location D- 101 Date Lab Concentration (pCi/L)

Collected Code 1-131 K-40 Cs-134 Cs-137 Ba-140 La-140 01-09-01 NSa -

02-06-01 NSa - -

03-06-01 NSa - - -

04-03-01 NS - - -_- -

05-01-01 DMI -3402 < 1.0 1449-169 < 15 < 18 < 60 < 15 05-15-01 DMI -3909 < 1.0 1708.+/--107 < 15 < 18 < 60 < 15 06-12-01 DMI -4767 < 1.0 1396 +/- 181 < 15 < 18 < 60 < 15 06-26-01 DMI -5212 < 1.0 1435*179 < 15 < 18 < 60 < 15 07-10-01 DMI -5716 < 1.0 1377 +/- 121 < 15 < 18 < 60 < 15 07-24-01 DM1 -6383 < 1.0 1452 +/- 197 < 15 < 18 < 60 < 15 08-07-01 DMI 6906,7 < 1.0 1573 +/- 127 < 15 < 18 < 60 < 15 08-21-01 DMI -7259 < 1.0 1184 +/- 141 < 15 < 18 < 60 < 15 09-05-01 DMI -7724 < 1.0 1381 +/- 133 < 15 < 18 <60 < 15 09-18-01 DMI -8115 < 1.0 1464 +/- 107 < 15 < 18 < 60 < 15 10-02-01 DMI -8613 < 1.0 1718

181 < 15 < 18 < 60 < 15 11-06-01 DMI -10167 < 1.0 1060*159 < 15 < 18 < 60 < 15 12-04-01 NSa - - - -

Location D-105 Date Lab Concentration (pCi/L)

Collected Code 1-131 K-40 Cs-134 Cs-137 Ba-140 La-140 01-09-01 DMI -82 < 1.0 1430

112 < 15 < 18 < 60 < 15 02-06-01 DMI -862 < 1.0 1341

127 < 15 < 18 < 60 < 15 03-06-01 DMI -1571 < 1.0 1404 +/- 146 < 15 < 18 < 60 < 15 04-03-01 DMI -1571 < 1.0 1251

130 < 15 < 18 < 60 < 15 05-01-01 DMI -3403 < 1.0 1444

145 < 15 < 18 < 60 < 15 05-15-01 DMI -3910 < 1.0 1336

143 < 15 < 18 <60 < 15 06-12-01 DMI 4768 < 1.0 1281

158 < 15 < 18 <60 < 15 06-26-01 DMI -5213 < 1.0 1502*133 < 15 < 18 < 60 < 15 07-10-01 NS" - -- -

07-24-01 DMI -6384 < 1.0 1378 163 < 15 < 18 < 60 < 15 08-07-01 DMI -6908 < 1.0 1346 *231 < 15 < 18 < 60 < 15 08-21-01 DMI -7260 < 1.0 1296 185 < 15 < 18 < 60 < 15 09-05-01 NS" - - - -

09-18-01 NS - - -

10-02-01 NS - -

"NS=No sample; sample not available. See Table 2.0, "Listing of Misssed Samples."

15-2

DUANE ARNOLD Table 15. Milk samples, analyses for iodine-131 and gamma emitting isotopes.

Collection: Monthly during non-grazing season (October 1 through April 30): biweekly during grazing season (May I through September 30)

Location D-108a Date Lab Concentration (pCi/L)

Collected Code 1-131 K-40 Cs-134 Cs-137 Ba-140 La-140 09-18-01 DMI -8116 < 1.0 1234 = 105 <15 <18 < 60 <15 10-02-01 DMI -8614 < 1.0 1504 +/- 132 <15 <18 < 60 <15 11-06-01 DMI -10168 < 1.0 1543 +/- 170 <15 <18 < 60 <15 12-04-01 DMI -10756 < 1.0 1331 +/- 164 <15 <18 < 60 <15 aNew location; Mcnulty (C).

15-3

DUANE ARNOLD Table 16. Well water samples, analyses for gross beta and tritium.

Collection: Quarterly Units: pCi/L Location D-53 Treated Municipal Water Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DWW-2353 DWW-5244 DWW-8512 DWW-10523 Gross Beta 2.8 +/- 0.6 1.9 +/- 0.5 2.5 +/- 0.6 2.9 +/- 0.7 H-3 < 162 < 175 < 156 < 155 Location D-54 Inlet to Municipal Water Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DWW-2354 DWW-5245 DWW-8513 DWW-10524 Gross Beta 2.5 +/- 0.6 3.1 A: 0.5 3.2 +/- 0.6 3.6 +/- 0.7 H-3 < 162 < 175 < 156 < 155 Location D-55 On-site Well Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DWW-2355 DWW-5214 DWW-8514 DWW-10525 Gross Beta < 0.9 < 0.9 < 0.9 < 0.9 H-3 < 162 < 175 < 156 < 155 Location D-57 Bull Farm Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DWW-2356,7 DWW-5215 DWW-8515 DWW-10526 Gross Beta 1.3 +/- 0.3 1.5 +/- 0.5 1.6 +/- 0.6 1.5 + 0.6 H-3 < 162 < 175 < 156 < 155 Location D-58 Franz Farm Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DWW-2358 DWW-5216 DWW-8516 DWW-10527,8 Gross Beta 8.6 +/- 0.8 5.6 +/- 0.7 6.5 +/- 0.7 6.1 +/- 0.6 H-3 < 162 < 175 < 156 < 155 Location D-72 Van Note Farm Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DWW-2359 DWW-5217,8 DWW-8517 DWW-10529 Gross Beta < 0.8 0.9 +/- 0.4 2.0 +/- 0.6 < 1.1 H-3 < 162 < 175 < 156 < 155 16-1

DUANE ARNOLD Table 17. Vegetation (broadleaf), analyses for iodine-131 and other gamma-emitting isotopes.

Collection: Annually Units: pCi/g wet Indicator Location D-93 D-94 D-101 Lab Code DVE-5717 Date Collected 7/10/01 Sample Type Green Leafy K-40 4.11 +/- 0.90 Mn-54 < 0.034 Co-58 < 0.032 Co-60 < 0.021 Nb-95 < 0.042 Zr-95 < 0.074 Ru-103 < 0.034 Ru-106 < 0.39 1-131 < 0.042 Cs-134 < 0.014 Cs-137 < 0.021 Ce-141 < 0.046 Ce-144 < 0.108 Control Location D-105 Lab Code DVE-5718 Date Collected 7/10/01 Sample Type Green Leafy K-40 3.38 +/- 0.67 Mn-54 < 0.014 Co-58 < 0.015 Co-60 < 0.024 Nb-95 < 0.018 Zr-95 < 0.026 Ru-103 < 0.019 Ru-106 < 0.26 1-131 < 0.019 Cs-134 < 0.014 Cs-137 < 0.031 Ce-141 < 0.026 Ce-144 < 0.106 17-1

DUANE ARNOLD Table 18. Vegetation (hay and grain), analyses for gamma-emitting isotopes.

Collection: Annually Units: pCi/g wet Location D-16 D-57 D-58 D-58 D-72 Lab Code DVE-8902 DVE-8903 DVE-8905 DVE-8904 DVE-8907 Date Collected 10/4/01 10/4/01 9/25/01 10/4/01 9/25/01 Sample Type Soybeans Corn Hay Corn Hay K-40 8.07 +/- 1.3-5 3.25 +/- 0.43 4.33 +/- 0.69 2.47 +/- 0.34 19.86 +/- 2.08 Mn-54 < 0.039 < 0.014 < 0.025 < 0.016 < 0.068 Co-58 < 0.051 < 0.013 < 0.013 < 0.012 < 0.077 Co-60 < 0.045 < 0.017 < 0.020 < 0.005 < 0.046 Nb-95 < 0.043 < 0.009 < 0.023 < 0.014 < 0.077 Zr-95 < 0.099 < 0.022 < 0.036 < 0.021 < 0.145 Ru-103 < 0.054 < 0.010 < 0.024 < 0.011 < 0.067 Ru-106 < 0.45 < 0.15 < 0.17 < 0.12 < 0.554 Cs-134 < 0.027 < 0.009 < 0.033 < 0.012 < 0.042 Cs-137 < 0.044 < 0.014 < 0.036 < 0.014 < 0.070 Ce-141 < 0.057 < 0.017 < 0.045 < 0.014 < 0.138 Ce-144 < 0.16 < 0.044 < 0.11 < 0.052 < 0.40 Location D-72 D-93 D-108 D-108 Lab Code DVE-8906 DVE-8908 DVE-8909 DVE-8910 Date Collected 10/4/01 10/2/01 10/2/01 10/2/01 Sample Type Corn Hay Corn Hay K-40 2.50 +/- 0.30 10.76 +/- 0.77 2.95 +/- 0.34 6.87 +/- 0.50 Mn-54 < 0.007 < 0.027 < 0.013 < 0.024 Co-58 < 0.012 < 0.028 < 0.008 < 0.028 Co-60 < 0.018 < 0.029 < 0.009 < 0.029 Nb-95 < 0.010 < 0.029 < 0.009 < 0.028 Zr-95 < 0.032 < 0.054 < 0.028 < 0.041 Ru-103 < 0.014 < 0.027 < 0.011 < 0.028 Ru-106 < 0.13 < 0.20 < 0.087 < 0.15 Cs-134 < 0.014 < 0.032 < 0.009 < 0.034 Cs-137 < 0.015 < 0.026 < 0.011 < 0.029 Ce-141 < 0.019 < 0.042 < 0.016 < 0.046 Ce-144 < 0.085 < 0.099 < 0.091 < 0.16 18-1

DUANE ARNOLD Table 19. Surface water samples, analyses for iodine-131 and gamma-emitting isotopes.

Collection Monthly Units: pCi/L Location: D-49 Date Collected 01-15-01 02-19-01 03-14-01 04-18-01 05-09-01 06-26-01 Lab Code DSW-242 DSW-1321 DSW-1999 DSW-3072 DSW-3825 DSW-5242 Mn-54 < 15 < 15 < 15 < 15 < 15 < 15 Fe-59 <30 <30 <30 < 30 <30 <30 Co-58 < 15 < 15 < 15 < 15 < 15 < 15 Co-60 < 15 < 15 < 15 < 15 < 15 < 15 Zn-65 <30 < 30 <30 <30 < 30 < 30 Nb-95 < 15 < 15 < 15 < 15 < 15 < 15 Zr-95 <30 < 30 <30 <30 <30 <30 1-131 < 15 < 15 < 15 < 15 < 15 < 15 Cs-134 < 15 < 15 < 15 < 15 < 15 < 15 Cs-137 < 15 < 15 < 15 < 15 < 15 < 15 Ba-140 < 60 < 60 < 60 < 60 < 60 < 60 La-140 < 15 < 15 < 15 < 15 < 15 < 15 Date Collected 07-24-01 08-08-01 09-24-01 10-10-01 11-13-01 12-11-01 Lab Code DSW-6642 DSW-7033 DSW-8518 DSW-9002 DSW-10518 DSW-10987 Mn-54 < 15 < 15 < 15 < 15 < 15 < 15 Fe-59 < 30 <30 < 30 <30 < 30 <30 Co-58 < 15 < 15 < 15 < 15 < 15 < 15 Co-60 < 15 < 15 < 15 < 15 < 15 < 15 Zn-65 <30 <30 < 30 <30 <30 <30 Nb-95 < 15 < 15 < 15 < 15 < 15 <15 Zr-95 < 30 <30 <30 <30 <30 <30 1-131 < 15 < 15 < 15 < 15 < 15 < 15 Cs-134 < 15 < 15 < 15 < 15 < 15 < 15 Cs-137 < 15 < 15 < 15 < 15 < 15 < 15 Ba-140 < 60 < 60 < 60 < 60 < 60 <60 La-140 < 15 < 15 < 15 < 15 < 15 < 15 19-1

DU.-"'4E ARNOLD Table 19. Surface water samples, analyses for iodine-131 and gamma-emitting isotopes.

Collection Monthly Units: pCi/L Location: D-50 Date Collected 01-15-01 02-19-01 03-14-01 04-18-01 05-09-01 06-15-01 Lab Code DSW-243 DSW-1322 DSW-2000 DSW-3073 DSW-3826 DSW-5219 Mn-54 <15 <15 <15 <15 < 15 <15 Fe-59 <30 <30 <30 <30 <30 <30 Co-58 <15 <15 <15 <15 <15 <15 Co-60 <15 <15 <15 <15 <15 <15 Zn-65 <30 <30 < 30 <30 <30 <30 Nb-95 <15 <15 <15 < 15 <15 <15 Zr-95 <30 <30 <30 <30 <30 <30 1-131 <15 <15 < 15 <15 <15 <15 Cs-134 <15 <15 <15 <15 <15 <15 Cs-137 <15 <15 <15 <15 <15 <15 Ba-140 < 60 < 60 < 60 < 60 < 60 < 60 La-140 <15 <15 <15 <15 <15 <15 Date Collected 07-24-01 08-08-01 09-24-01 10-10-01 11-13-01 12-11-01 Lab Code DSW-6643 DSW-7034 DSW-8519 DSW-9003 DSW-10519 DSW-10988 Mn-54 <15 <15 < 15 <15 <15 <15 Fe-59 <30 <30 <30 <30 < 30 <30 Co-58 <15 <15 <15 <15 <15 <15 Co-60 <15 <15 <15 <15 <15 <15 Zn-65 < 30 < 30 <30 <30 <30 < 30 Nb-95 <15 <15 <15 <15 <15 <15 Zr-95 < 30 <30 < 30 <30 <30 <30 1-131 <15 <15 <15 < 15 <15 <15 Cs-134 <15 <15 <15 <15 <15 < 15 Cs-137 <15 <15 <15 <15 <15 < 15 Ba-140 < 60 < 60 < 60 < 60 < 60 < 60 La-140 <15 < .1 <15 <15 <15 <15 19-2

DUANT ARNOLD Table 19. Surface water samples, analyses for iodine-131 and gamma-emitting isotopes.

Collection Monthly Units: pCi/L Location: D-51 Date Collected 01-15-01 02-19-01 03-14-01 04-18-01 05-09-01 06-15-01 Lab Code DSW-244 DSW-1323 DSW-2001 DSW-3074 DSW-3827 DSW-5220 Mn-54 <15 < 15 < 15 < 15 <15 <15

< 30 <30 <30 <30 <30 < 30 Fe-59

<15 <15 < 15 <15 <15 < 15 Co-58

<15 <15 <15 < 15 <15 <15 Co-60

<30 <30 <30 <30 < 30 <30 Zn-65

< 15 < 15 < 15 < 15 <15 <15 Nb-95

<30 <30 <30 <30 <30 <30 Zr-95 1-131 <15 <15 <15 < 15 <15 <15 Cs-134 <15 <15 <15 <15 <15 < 15

< 15 < 15 <15 <15 <15 < 15 Cs-137

< 60 < 60 < 60 < 60 < 60 < 60 Ba-140

<15 <15 <15 <15 <15 <15 La-140 07-24-01 08-08-01 09-24-01 10-10-01 11-13-01 12-11-01 Date Collected Lab Code DSW-6644 DSW-7035 DSW-8520 DSW-9004,5 DSW-10520 DSW-10989

<15 <15 < 15 <15 <15 <15 Mn-54

<30 <30 <30 <30 <30 <30 Fe-59

<15 <15 <15 <15 <15 < 15 Co-58

<15 <15 <15 <15 <15 < 15 Co-60

<30 <30 <30 <30 <30 <30 Zn-65

< 15 <15 <15 <15 <15 <15 Nb-95

<30 <30 <30 <30 <30 <30 Zr-95

<15 <15 <15 < 15 <15 < 15 1-131

<15 <15 <15 <15 <15 <15 Cs-134

<15 <15 < 15 < 15 <15 <15 Cs-137

< 60 < 60 < 60 < 60 < 60 < 60 Ba-140

<15 <15 <15 < 15 <15 <15 La-140 19-3

DUTANE ARNOLD Table 19. Surface water samples, analyses for iodine-131 and gamma-emitting isotopes.

Collection Monthly Units: pCi/L Location: D-99 Date Collected 01-15-01 02-19-01 03-14-01 04-18-01 05-09-01 06-26-01 Lab Code DSW-245 DSW-1324 DSW-2002 DSW-3075 DSW-3828 DSW-5243 Mn-54 <15 <15 < 15 <15 <15 <15 Fe-59 <30 <30 <30 <30 <30 <30 Co-58 <15 <15 < 15 <15 <15 <15 Co-60 <15 <15 <15 <15 < 15 <15 Zn-65 <30 <30 <30 <30 <30 <30

<15 < 15 <15 < 15 <15 <15 Zr-9" <30 <30 <30 <30 < 30 <30 1-131 <15 <15 <15 <15 <15 <15 Cs-134 <15 <15 <15 <15 <15 <15 Cs-137 <15 <15 <15 <15 <15 <15 Ba-140 < 60 < 60 < 60 < 60 < 60 <60 La-140 <15 <15 < 15 <15 <15 <15 Date Collected 07-24-01 08-08-01 09-24-01 10-10-01 11-13-01 12-11-01 Lab Code DSW-6645 DSW-7036 DSW-8521 DSW-9006 DSW-10521 DSW-10990 Mn-54 <15 <15 <15 <15 <15 <15 Fe-59 <30 <30 < 30 <30 <30 <30 Co-58 <15 <15 <15 <15 <15 <15 Co-60 <15 <15 <15 <15 <15 <15 Zn-65 < 30 <30 <30 < 30 < 30 < 30 Nb-95 <15 <15 <15 <15 <15 <15 Zr-95 < 30 < 30 <30 <30 <30 <30 1-131 <15 <15 <15 < 15 <15 <15 Cs-134 <15 <15 <15 <15 < 15 <15 Cs-137 <15 <15 <15 <15 < 15 <15 Ba-140 < 60 < 60 < 60 < 60 < 60 <60 La-140 <15 <15 <15 <15 < 15 < 15 19-4

DUANE ARNOLD Table 20. Surface water, analyses for potassium-40 by flame photometry and gamma-emitting isotopes.

Collection: Monthly Units: pCi/L Location: D-107 Date Collected 01-15-01 02-19-01 03-14-01 04-18-01 05-09-01 06-26-01 Lab Code DSW-246 DSW-1325 DSW-1325 DSW-3076 DSW-3829 DSW-5221 K-40 (fp) 25.1 26.8 23.4 28.5 30.3 20.8 Mn-54 <15 <15 <15 <15 < 15 <15 Fe-59 <30 <30 <30 <30 <30 <30 Co-58 <15 <15 <15 <15 <15 <15 Co-60 <15 <15 <15 <15 <15 <15 Zn-65 <30 <30 <30 <30 <30 <30 Nb-95 <15 <15 <15 <15 <15 <15 Zr-95 <30 <30 <30 <30 <30 <30 1-131 <15 <15 <15 <15 <15 <15 Cs-134 <15 <15 <15 <15 <15 <15 Cs-137 <15 <15 <15 <15 <15 <15 Ba-140 < 60 < 60 < 60 < 60 < 60 < 60 La-140 <15 <15 <15 <15 <15 <15 Date Collected 07-24-01 08-08-01 09-24-01 10-10-01 11-13-01 12-11-01 Lab Code DSW-6646 DSW-7037 DSW-8522 DSW-9007 DSW-10522 DSW-10991 K-40 (fp) 8.7 9.5 12.1 16.4 19.9 18.9 Mn-54 <15 <15 <15 <15 <15 <15 Fe-59 <30 <30 <30 <30 <30 <30 Co-58 <15 <15 <15 <15 <15 <15 Co-60 <15 <15 <15 < 15 <15 <15 Zn-65 <30 <30 <30 <30 <30 <30 Nb-95 <15 <15 <15 <15 <15 <15 Zr-95 <30 < 30 <30 <30 <30 <30 1-131 <15 <15 <15 <15 <15 <15 Cs-134 <15 <15 <15 <15 <15 <15 Cs-137 < 15 <15 <15 <15 <15 < 15 Ba-140 < 60 < 60 < 60 < 60 < 60 < 60 La-140 <15 <15 <15 <15 <15 <15 20-1

DUANE ARNOLD Table 21. Surface water, analysis for tritium.

Collection: Quarterly composites of monthly samples.

Units: pCi/L Location D-49 Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DSW-2537 DSW-5246 DSW-8525 DSW-11679 H-3 < 184 < 175 < 156 < 160 Location D-50 Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DSW-2538 DSW-5247 DSW-8526 DSW-11680 H-3 < 184 < 175 < 156 < 160 Location D-51 Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DSW-2539 DSW-5248 DSW-8527 DSW- 11681 H-3 < 184 < 175 < 156 < 160 Location D-99 Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DSW-2540 DSW-5249 DSW-8528 DSW-1 1682 H-3 < 184 < 175 < 165 < 160 Location D-107 Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DSW-2541 DSW-5250 DSW-8529 DSW-11683 H-3 < 184 < 175 < 165 < 160 21-1

DUANE ARNOLD Table 22. Fish, analyses of edible portion for gamma-emitting isotopes.

Collection: Semiannually Units: pCi/g wet Location Upstream, D-49 Lab Code DF-6702 DF-6703 DF-8917 DF-8918 Date Collected 7/30/01 7/30/01 9/27/01 9/27/01 Sample Type Carp Carpsucker Carp Carpsucker K-40 2.10 -t 0.22 2.88 + 0.28 2.90 - 0.35 3.34 + 0.51 Mn-54 0.010 0.007 0.012 0.019 Fe-59 0.013 0.020 0.017 0.046 Co-58 0.007 0.011 0.006 0.018 Co-60 0.009 0.006 0.008 0.010 Zn-65 0.021 0.020 0.027 0.047 Nb-95 0.007 0.011 0.014 0.023 Zr-95 0.016 0.019 0.017 0.028 Ru-103 0.007 0.012 0.008 0.017 Ru-106 0.058 0.063 0.110 0.122 Cs-134 0.010 0.011 0.005 0.027 Cs-137 0.009 0.007 0.010 0.018 Ce-141 0.018 0.023 0.013 0.019 Ce-144 0.032 0.039 0.033 0.090 Location Downstream, D-61 Lab Code DF-6704 DF-6705 DF-8919 DF-8920 Date Collected 7/30/01 7/30/01 9/27/01 9/27/01 Sample Type Carp Buffalo Carp Carpsucker K-40 2.97 _ 0.26 3.04 +/- 0.24 3.02 _ 0.40 2.96 + 0.43 Mn-54 0.008 0.010 0.007 0.010 Fe-59 0.025 0.011 0.039 0.022 Co-58 0.008 0.011 0.016 0.013 Co-60 0.006 0.008 0.011 0.016 Zn-65 0.017 0.014 0.020 0.026 Nb-95 0.012 0.008 0.014 0.017 Zr-95 0.021 0.013 0.015 0.035 Ru-103 0.009 0.011 0.015 0.013 Ru-106 0.034 0.048 0.095 0.137 Cs-134 0.009 0.009 0.010 0.012 Cs-137 0.008 0.004 0.009 0.016 Ce-141 0.015 0.024 0.032 0.016 Ce-144 0.035 0.049 0.100 0.057 22-1

DUANE ARNOLD Table 23. River sediment, analysis for gamma-emitting isotopes.

Collection: Semiannually Units: pCi/g dry Location D-50 Lab Code DBS-4232 DBS-8911 Date Collected 5/23/01 9/26/01 K-40 7.59 _ 0.43 7.90 _ 0.61 Mn-54 0.012 0.019 Fe-59 0.027 0.047 Co-58 0.010 0.017 Co-60 0.010 0.014 Zn-65 0.027 0.042 Nb-95 0.018 0.032 Zr-95 0.028 0.037 Ru-103 0.014 0.020 Ru-106 0.076 0.130 Cs-134 0.009 0.025 Cs-137 0.029+/- 0.012 0.020 Ce-141 0.035 0.030 Ce-144 0.049 0.088 Location D-51 Lab Code DBS-4233,4 DBS-8912 Date Collected 5/23/01 9/26/01 K-40 7.99 _ 0.38 7.41 -t 0.56 Mn-54 0.013 0.015 Fe-59 0.040 0.026 Co-58 0.016 0.018 Co-60 0.009 0.019 Zn-65 0.031 0.043 Nb-95 0.020 0.026 Zr-95 0.012 0.042 Ru-103 0.014 0.024 Ru-106 0.082 0.107 Cs-134 0.008 0.025 Cs-137 0.027 0.011 0.033+/- 0.020 Ce-141 0.042 0.031 Ce-144 0.079 0.067 23-1

DUANE ARNOLD Table 23. River sediment, analysis for gamma-emitting isotopes.

Collection: Semiannually Units: pCi/g dry Location D-107 Lab Code DBS-4235 DBS-8913 Date Collected 5/23/01 9/26/01 K-40 6.64 +/- 0.53 5.51 +/- 0.42 Mn-54 < 0.027 < 0.010 Fe-59 < 0.034 < 0.015 Co-58 < 0.012 < 0.015 Co-60 < 0.018 0.036 +/- 0.022 Zn-65 < 0.041 < 0.032 Nb-95 < 0.037 < 0.022 Zr-95 < 0.017 < 0.023 Ru-103 < 0.024 < 0.020 Ru-106 < 0.11 < 0.097 Cs-134 < 0.008 < 0.020 Cs-137 < 0.018 < 0.013 Ce-141 < 0.055 < 0.044 Ce-144 < 0.12 < 0.077 23-2

DUANE ARNOLD Table 24. Precipitation, analyses for gamma emitting isotopes.

Collection: Monthly Units: pCi/L Location: DAEC Date Collected 01-15-01 02-19-01 03-14-01 04-18-01 05-09-01 06-26-01 Lab Code DP-247,8 DP-1326 DP-2004 DP-3071 DP-3824 DP-5222 Mn-54 < 2.7 < 7.0 <4.6 <4.9 <3.8 < 2.5 Fe-59 <8.5 < 11.6 < 10.4 <4.0 <6.5 < 9.2 Co-58 < 5.0 <3.6 <4.6 < 4.6 <3.0 < 3.4 Co-60 <4.4 <7.1 <4.8 < 5.5 <3.5 <2.7 Zn-65 <6.9 <3.0 < 7.7 <4.9 <7.0 <4.7 Nb-95 <4.5 < 5.0 < 5.4 < 5.2 < 3.5 <3.7 Zr-95 < 10.3 < 10.4 <7.3 <3.5 <6.6 <6.8 1-131 <9.6 < 15.3 < 23.1 < 15.8 < 13.2 < 50.0 Cs-134 < 4.4 <5.6 <3.5 <5.7 <4.2 <3.0 Cs-137 <4.0 <3.8 <4.9 < 4.5 <3.7 <2.7 Ba-140 < 47.0 <40.1 < 46.8 <42.1 < 24.4 < 33.8 La-140 < 12.0 < 7.2 < 9.7 <5.3 < 5.0 < 11.8 Date Collected 07-24-01 08-08-01 09-24-01 10-10-01 11-13-01 12-04-01 Lab Code DP-6647 DP-7038 DP-8523 DP-9001 DP-10517 DP-10777 Mn-54 < 3.9 <7.2 <3.3 <3.1 <5.0 < 7.2 Fe-59 < 10.2 <9.1 <9.5 <5.7 <5.8 < 11.6 Co-58 <4.3 <5.9 < 2.4 < 2.7 <3.5 < 5.4 Co-60 < 3.2 <5.7 <2.8 <2.5 <6.9 <4.5 Zn-65 < 7.2 < 11.3 < 3.2 <4.4 < 10.7 <7.7 Nb-95 <3.6 <7.1 <4.8 < 3.7 < 5.9 <7.6 Zr-95 < 5.7 < 13.2 < 7.3 <4.7 <8.2 < 13.9 1-131 < 28.9 < 14.1 < 20.3 < 9.3 < 10.2 < 10.9 Cs- 134 < 4.7 <8.5 < 3.9 <2.1 < 6.4 <8.1 Cs-137 < 3.2 <6.6 <3.0 < 1.6 <5.9 <9.7 Ba-140 < 40.1 < 40.9 < 28.4 < 15.4 < 24.2 < 34.6 La-140 < 10.2 <8.1 <8.1 < 2.4 <4.9 < 9.4 24-1

DUANE ARNOLD Table 25. Precipitation, analysis for tritium.

Collection: Quarterly composites of monthly samples.

Units: pCi/L Location Duane Arnold Period 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Lab Code DP-2542 DP-5251 DP-8524 DP-1 1678 H-3 < 184 228 +/- 96 < 156 < 161 25-1

DUANE ARNOLD Table 26. Meat, analysis for gamma-emitting isotopes.

Collection: Annually, when available.

Units: pCi/g wet Lab Code NS" Date Collected Sample Type K-40 Mn-54 Fe-59 Co-58 Co-60 Zn-65 Nb-95 Zr-95 Ru-103 Ru- 106 Cs-134 Cs-137 Ce- 141 Ce- 144 a NS= No sample; Meat not collected in 2001. No animals slaughtered for home use.

26-1

DUANE ARNOLD Table 27. Soil, analysis for strontium-90 and gamma-emitting isotopes.

Collection: Annually Units: pCi/g dry Location D-15 D-16 Lab Code DSO-8914 DSO-8915,16 Date Collected 10/5/01 10/5/01 Sr-90 0.026 __.0.011 < 0.017 K-40 15.31 1.02 8.85 + 0.42 Mn-54 0.036 0.019 Fe-59 0.092 0.020 Co-58 0.024 0.015 Co-60 0.016 0.018 Zn-65 0.094 0.035 Nb-95 0.023 0.010 Zr-95 0.059 0.024 Ru-103 0.030 0.012 Ru-106 0.31 0.13 Cs-134 0.049 0.019 Cs-137 0.17+/- 0.048 0.16 _ 0.018 Ce-141 0.052 0.021 Ce-144 0.19 0.066 27-1

NG-02-0364, License DPR-49, 2001 Annual Radiological Environmental Report

Contents

Text

Subject:

6.0 REFERENCES

1.0 INTRODUCTION

SUMMARY

6.0 REFERENCES

SUMMARY

Conclusion:

1.0 INTRODUCTION

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NG-02-0364, License DPR-49, 2001 Annual Radiological Environmental Report

Text

Subject:

6.0 REFERENCES

1.0 INTRODUCTION

SUMMARY

6.0 REFERENCES

SUMMARY

Conclusion:

1.0 INTRODUCTION

Navigation menu

Search