LIC-07-0040, Radiological Environmental Operating Report Technical Specification 5.9.4.b, January 01, 2006 - December 31, 2006

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Radiological Environmental Operating Report Technical Specification 5.9.4.b, January 01, 2006 - December 31, 2006
ML071270293
Person / Time
Site: Fort Calhoun Omaha Public Power District icon.png
Issue date: 12/31/2006
From:
Omaha Public Power District
To:
Office of Nuclear Reactor Regulation
References
LIC-07-0040
Download: ML071270293 (41)


Text

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A-10" I 2006 Radiological Environmental Report

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OMAHA PUBLIC POWER DISTRICT

.FORT CALHOUN STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TECHNICAL SPECIFICATION 5.9.4.b January 01, 2006 - December 31, 2006

Annual Radiological Environmental Operating Report This report is submitted in accordance with Section 5.9.4.b of the Technical Specifications of Fort Calhoun Station Unit No. 1, Facility Operating License DPR-40 for the period January 01, 2006 through December 31, 2006.

In addition, this report provides any observations and anomalies that occurred during the monitoring period.

Reviewed by: Approved by:

Supervisor-System Chemistry Manager-Chemistry

Annual Radiological Environmental Operating Report In accordance with Technical Specification 5.9.4.b, herein is the Fort Calhoun Station (FCS) Annual Radiological Environmental Operating Report for year 2006.

The data provided is consistent with the objectives as specified in Section 5.2.2 of the Offsite Dose Calculation Manual (ODCM), "Annual Radiological Environmental Operating Report." The report is presented as follows:

1) An introductory discussion of the implementation of the Radiological Environmental Monitoring Program (REMP), including program observations and environmental impact relevant to the Operation of FCS.
2) The sample class, sample collection frequency, number of sample locations, and the number of samples collected this reporting period for each parameter are delineated in Table 1.0.
3) A statistical evaluation of REMP data is summarized in Table 2.0, in accordance with Regulatory Guide 4.8, Table 1. For each type of sample media and analysis, Table 2.0 presents data separately for all indicator locations, all control (background) locations, and the location having the highest annual mean result. For each of these classes, Table 2.0 specifies the following:
a. The total number of analyses
b. The fraction of analyses yielding detectable results (i.e., results above the highest Lower Limit of Detection (LLD) for this period
c. The maximum, minimum, and average results
d. Locations with the highest annual mean are specified by code, name, and by distance and direction from the center of plant reactor containment building
4) Table 3.0 is a listing of missed samples and explanations
5) Table 4.0 is the 2006 Land Use Survey
6) Review of Environmental Inc. Quality Assurance Program
7) Appendix A describes the Interlaboratory Comparison Program
8) Appendix B describes the vendor Data Reporting Conventions utilized
9) Appendix C reports the information required when primary coolant specific activity has exceeded the limits of Technical Specification 2.1.3
10) Appendix D is the Sample Location Maps Page 1 of 14

INTRODUCTION Radiological Environmental Monitoring Program (REMP) - 2006 This report gives the results of the Radiological Environmental Monitoring Program (REMP) for the year 2006. The REMP is a requirement of the Fort Calhoun Station (FCS) operating license. It was initiated prior to plant operation in 1973.

The main purpose of the REMP is to ensure public safety by monitoring plant discharges and assessing the effect, if any, of plant operations, on the environment. Samples are collected that would account for various exposure pathways such as ingestion, inhalation, adsorption and direct exposure.

Samples collected on a regular basis include: air, water, milk, vegetation, fish, sediment, food crops, and field crops. Direct radiation is measured by thermoluminescent dosimeters (TLDs). These samples and TLDs are sent to an independent vendor laboratory for analysis. The vendor uses analytical methods that are sensitive enough to detect a level of activity far below that which would be considered harmful. Locations for sample collection are based on radiological and meteorological data from the Annual Radiological Effluent Release Report and information obtained from the Environmental Land Use Survey.

Most samples, particularly indicator samples, are collected in a circular area within a five-mile radius of plant containment. (However, control locations are usually outside of five miles.) This circle is divided into sixteen equal sectors, each assigned an identification letter "A" through "R" (note: letters "I"and "0"are not used, as they may be mistaken for the numbers "1" and "0"). Sector "A" is centered on North or zero degrees. Sectors are also given directional labels such as "West-Southwest" ("WSW"). Sample locations are listed by number along with their respective distances and direction from plant containment, in the Offsite Dose Calculation Manual (ODCM).

When assessing sample results, data from indicator locations (those most likely to be affected by plant operations) are compared to those from control locations (those least or not likely to be effected). Results from an indicator location which were significantly higher than those from a control location, could indicate a plant-attributable effect, and could require additional investigation.

The results of the sample analyses, as required by the ODCM, are presented in the attached statistical tables in accordance with Table 1 of Regulatory Guide 4.8, "Environmental Technical Specifications for Nuclear Power Plants."

Sample collection was conducted by plant chemistry/environmental staff. A contract vendor (Environmental Inc., Northbrook, Illinois) performed sample analyses, preparation of monthly reports and the statistical evaluation of sample results. All vendor analysis techniques met the sensitivity requirements as stated in the ODCM.

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Results for 2006 were within expected ranges and compared closely with historical results. The following is a review of specific sample results.

1) Ambient Gamma Radiation Ambient gamma radiation is measured by thermoluminescent dosimeters (TLDs) provided by the vendor laboratory. These dosimeters contain calcium sulfate phosphors and are processed quarterly.

All results for 2006 were within historical ranges. The indicator locations had results ranging from 1.2 to 1.8 mrem per week. The control location (OTD-L) had an annual mean of 1.3 mrem per week. Results from indicator locations are within the range of results from the control location.

No plant-attributable results were observed.

2) Milk/Pasture Milk samples are collected every two weeks from the beginning of May through September when dairy animals are in pasture. Indicator samples are collected from a herd of milk goats at a family farm located approximately 0.7 miles from the plant in Sector K (South-Southwest).

The control samples are collected from a commercial dairy cow herd located approximately 9.9 miles from the plant in Sector J (South). These locations are unchanged from last year. There were no missed milk samples this year, therefore, no pasture samples were needed.

The milk sample collected from Bansen Farm on June 30, 2006, had some leakage during shipping. Final sample volume was 0.6 liter.

Enough sample volume was available to determine appropriate LLD.

All milk sample results for Iodine-1 31, Cesium-1 34, Cesium-1 37 and other gammas were less than LLD for both indicator and control locations. No plant-related effects were observed.

3) Fish Fish are collected on an annual basis. Control samples are collected at a location approximately twenty miles upstream of the plant (river miles 665-667). Indicator samples are collected in the immediate vicinity of the power plant (river miles 644-646). Several species of fish, important to commercial and recreational interest, representing all levels of the aquatic food chain are collected at both locations. Results from both locations were less than LLD for all gamma emitters, indicating no plant-related effects.

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4) Food Crops Food crops samples are collected from three locations annually, two indicator locations and one control location. Based on the results of the 2006 Land Use Survey, the nearest high deposition pathway for food crops is the Ellis Acreage in Sector J (0.74 miles, 1820). Accordingly, vegetable samples were collected at Ellis Acreage for the purposes of the 2006 REMP. All results were less than LLD for all isotopes. No plant-related effects were observed.
5) Onsite Field Crops In addition, onsite field crops were sampled near the plant boundary in Sector F (0.52 miles, 1180).

Sample results were comparable with historical results and within the range of results reported from the control location garden at Mohr Dairy in Sector J (9.86 miles, 1860). All results were less than LLD for all isotopes.

No plant-related effects were observed.

6) Sediment River sediment samples are collected twice a year at an upstream control location and a downstream indicator location. All results were less than LLD, and no plant-related effects were observed.
7) Air Monitoring Air sample results for 2006 were well within historical limits for all locations. Additionally, all indicator locations showed results very similar to the control location. No plant-related effects were observed.

Three incidents were reported to the Plant Corrective Action Group in 2006 relating to air sampling problems. Each is discussed below.

When samples were being collected on February 8, 2006, it was found that the ground-fault interrupt (GFI) switch had tripped at location OAP-K-(I) after only 45 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br /> of run time. This resulted in a sample volume of only 155 cubic meters. The sample was analyzed and activity calculated for actual volume, yielding a Beta result of 0.017 pCi/L. This result is within the historical range of all sample locations. This sample was handled in accordance with the ODCM Section 4.1.1A(7) which addresses lost and non-standard samples. No significant airborne effluents were discharged from the plant during the time period in question. There were no violations of the ODCM or regulatory requirements. There was no effect on public safety or the Public Radiation Safety Cornerstone.

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When the technician arrived at location OAP-K-(I) to change out the GFI switch on February 28, they found it had again tripped off after 70.32 hours3.703704e-4 days <br />0.00889 hours <br />5.291005e-5 weeks <br />1.2176e-5 months <br /> of run time. The GFI was replaced and the system checked back to the transformer for potential grounds. In addition to the suspected malfunctioning GFI, a loose side lug was found in the meter. This could have contributed to the GFI tripping. The unit was re-started after repairs and monitored daily to verify continuous operation. The sample was collected at the regular day and time. Total sample collection time was 92.12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and total sample volume was 313 cubic meters. Sample activity was calculated accordingly, yielding a result of 0.040 pCi/L, which is within historical seasonal results. There was no violation of ODCM or regulatory requirements. The sample was completed in accordance with the ODCM Section 4.1.1A(7) which addresses lost or non-standard samples. There was no effect on public safety of the Public Radiation Safety Cornerstone.

On July 27, 2006, when the technician arrived at location OAP-B-(I), the rotometer on the air pump was showing a flow of 2.5 cubic feet per minute. The technician replaced the pump and returned the potentially malfunctioning pump to the instrument shop. When the pump was tested with the Teledyne flow standard equipment, to verify actual flow, it was found to be operating at 2.07 cubic feet per minute, well within the acceptance criteria. The self-contained rotometers on the air pumps are known to have a degree of accuracy problems. They are also subjected to temperature changes, humidity, and the potential for in-leakage of fine dust particles. As a result, the Teledyne flow standard equipment is considered the determiner of actual flow rates. Since actual flow rates were within limits, no correction was needed to sample volume results and this is considered a rotometer problem only.

8) Surface Water Water samples are collected upstream of the plant (control location) as well as half-mile downstream, and at a municipal water treatment plant on the north edge of Omaha.

Results for Cs-134, Cs-1 37, and other gammas were all less than LLD.

Tritium results were also less than LLD. No plant-related effects were detected.

9) Ground Water Ground water monitoring for tritium is performed per the Site Ground Water Protection Program. Analysis results for ground water samples collected are presented in the 2006 Annual Radiological Effluent Release Report.

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Table 1.0 Sample collection program Number of Number of Samples Collection Sample Collected Sample Class Frequency Locations This Period Background Radiation (TLDs) Quarterly 15 60 Air Particulates Weekly 6 318 Airborne Iodine Weekly 6 318 Milk Semimonthly 2 22 Water Monthly 3 36 Fish Annually 2 5 Sediment Semiannually 2 4 Food Crops Annually 2 8 Onsite Field Crops Annually 1 1 TOTAL 772 Page 6 of 14

Table 2.0 Radiological Environmental Monitoring Program Summary Reporting Period January-December, 2006 Name of Facility Fort Calhoun Nuclear Power Station - Unit 1 Docket No. 50-285 Location of Facility Washington, Nebraska

( County, State)

Background Gamma 60 0.5 1.5 (56/56) OTD-J-(l) 1.6 (4/4) 1.3 (4/4) 0 Radiation (1.2-1.8) Ellis Acreage (1.5-1.8) (1.2-1.4)

(TLD) 0.7 mi. @ 180° (mR/week)

Airborne GB 318 0.005 0.028 (265/265) OAP-F-(C) 0.030 (53 /53) 0.030 (53/53) 0 Particulates (0.010-0.070) Valley (0.012-0.061) (0.012-0.061)

(pCi/m3) 19.5 mi. @ 219 GS 24 Cs-134 0.001 < LLD - < LLD 0 Cs-1 37 0.001 < LLD - < LLD 0 Other Gammas 0.001 < LLD - < LLD 0 Airborne 1-131 318 0.07 < LLD - < LLD 0 Iodine (pCi/m3)

Milk 1-131 22 0.5 < LLD < LLD 0 (pCi/L)

GS 22 K-40 150 1622 (11/11) OFM-F-(I) 1622 (11/11) 1157 (11/11) 0 (1136-1778) Bansen Farm (1136-1778) (691-1528) 0.7 mi. @ 207 0 Cs-134 15 < LLD < LLD 0 Cs-137 15 < LLD < LLD 0 Other Gammas 15 < LLD < LLD 0 Water GS 36 (pCi/L) Cs-134 15 < LLD - - < LLD 0 Cs-137 15 < LLD - - < LLD 0 Other Gammas 15 < LLD - - < LLD 0 H-3 12 300 < LLD - - < LLD 0 Page 7 of 14

Table 2.0 Radiological Environmental Monitoring Program Summary Reporting Period January-December, 2006 Name of Facility Fort Calhoun Nuclear Power Station - Unit 1 Docket No. 50-285 Location of Facility Washington, Nebraska

( 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 5 (pCi/g wet) Mn-54 0.028 < LLD - < LLD 0 Co-58 0.020 < LLD - < LLD 0 Co-60 0.026 < LLD - - < LLD 0 Fe-59 0.051 < LLD - - < LLD 0 Zn-65 0.050 < LLD - - < LLD 0 Ru-103 0.037 < LLD - - < LLD 0 Cs-134 0.039 < LLD - - < LLD 0 Cs-137 0.030 < LLD - - < LLD 0 Sediment GS 4 pCi/g dry Mn-54 0.018 < LLD - < LLD 0 Co-58 0.023 < LLD - < LLD 0 Co-60 0.014 < LLD - < LLD 0 Fe-59 0.051 < LLD - < LLD 0 Zn-65 0.049 < LLD - - < LLD 0 Cs-134 0.025 < LLD - - < LLD 0 Cs-137 0.017 < LLD - - < LLD 0 Food Crops GS 9 (pCi/g wet) Mn-54 0.029 < LLD - - < LLD 0 Co-58 0.017 < LLD - - < LLD 0 Co-60 0.018 < LLD - - < LLD 0 Fe-59 0.026 < LLD - - < LLD 0 Zn-65 0.037 < LLD - - < LLD 0 Zr-Nb-95 0.022 < LLD - - < LLD 0 Cs-134 0.015 < LLD - . < LLD 0 Cs-137 0.020 < LLD - - < LLD 0 Ba-La-140 0.039 < LLD - - < LLD 0 a GB = gross beta, GS = gamma scan.

b LLD = nominal lower limit of detection based on a 95% confidence level.

c Mean and range are based on detectable measurements only (i.e., >LLD) Fraction of detectable measurements at specified locations is indicated in parentheses (F).

d Locations are specified: (1) by code, (2) by name, and (3) by distance and direction relative to the Reactor Containment Building.

e Non-routine results are those which exceed ten times the control station value. If no control station value is available, the result is considered non-routine if it exceeds the typical pre-operational value for the medium or location.

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I U

Table 3.0 Listing of Missed Samples (samples scheduled but not collected)

I I Sample Type Date Location Reason I All required samples for the REMP were collected as scheduled for 2006.

U I

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I I

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I I

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il I Page 9 of 14

-Tb - -- ronmental L- r---- - -- - -

Table 4.0 Environmental Land Use Survey Sector Type of Use Owner's Name (miles/degrees) Chniqu Age Group Remarks Nearest Residence Wright 4.36 / 351 Mail Survey Adult, Child Interviewed also Milk Animal None None None None A Meat Animal None None None None Vegetable Garden None None None None Groundwater Cottonwood 4.57 / 349 Mail Survey None Nearest Residence J. Rand 1.93/12 Mail Survey Adult Milk Animal None None None None B Meat Animal D. Dugdale 4.72 / 29 City Register Adult, Teen, Child No Survey Response Vegetable Garden None None None None Co Groundwater J. Rand 1.93/12 Mail Survey Adult CD Nearest Residence M. Hansen 1.52 / 42 Mail Survey Adult, Infant 0

0 Milk Animal None None None None C Meat Animal None None None None Vegetable Garden Thiele 1.59 / 52 City Register Adult, Child No Survey Response Groundwater M. Hansen 1.52/42 Mail Survey Adult, Infant Nearest Residence G. Meade 4.79 / 63 Mail Survey Adult Milk Animal None None None None D Meat Animal None None None None Vegetable Garden M. Borchers 4.98 / 58 City Register Adult No Survey Response Groundwater G. Meade 4.79 / 63 Mail Survey Adult (1) Approximate age categories in receptor deck for evaluating dose commitment:

Infant 0-1 Yr.

Child 1-11 Yrs.

Teen 12-17 Yrs.

Adult Over 17 Yrs.

Table 4.0 Environmental Land Use Survey (continued)

Type Sectorf Use wner' Name Coordinates CountingAgGruReak Type f Use Sector wner' Name (miles/degrees) TechniqueAgGruReak Nearest Residence B. Herman 4.67 /89 City Register Adult No Survey Response Milk Animal None None None None E Meat Animal D. Brothers 4.91 / 90 Mail Survey Adult Vegetable Garden B. Herman 4.67/I89 City Register Adult No Survey Response Groundwater B. Herman 4.67/I89 City Register Adult No Survey Response Nearest Residence Wilson Island 4.22 /121 Mail Survey Adult Staff-occupied housing Milk Animal None None None None F Meat Animal Watts 5.00 /112 Mail Survey Adult Vegetable Garden Watts 5.00 /112 Mail Survey Adult Groundwater Wilson Island 4.22 /121 Mail Survey Adult CD Nearest Residence T. Carter 1.67 /145 Mail Survey Adult 0 Milk Animal None None None None G Meat Animal None None None None Vegetable Garden W. Kalin 1.74 /145 Mail Survey Adult Groundwater Smith 1.99 /134 Interview Adult Nearest Residence S. Herber 0.65 /163 Interview Adult, Teen Mailed Survey Milk Animal None None None None H Meat Animal R. Hineline 1.82 /148 Mail Survey Adult Also has Holstein bulls Vegetable Garden R. Hineline 1.82 /148 Mail Survey Adult

[Groundwater S.Hre .5/ 6 neve Adult, Teen Mailed Survey (1) Approximate age categories in receptor deck for evaluating dose commitment:

Infant 0-1 Yr.

Child 1-11 Yrs.

Teen 12-17 Yrs.

Adult Over 17 Yrs.

- -=-- =- = 1=1 =- - - -=- -

Table 4.0 Environmental Land Use Survey (continued)

Coordinates Counting Age Group Remarks Sector Type of Use Owners Name (miles/degrees) Technique Nearest Residence Dowler 0.73 /175 Interview Adult, Teen Survey Response Milk Animal Stangl 3.44 / 169 Mail Survey Adult,TeenChildInfant Interviewed J Meat Animal L. Dickes 2.60 / 170 City Register Adult No Survey Response Vegetable Garden J. Ellis 0.74 /182 Interview Adult No Survey Response Groundwater Dowler 0.73 / 175 Interview Adult, Teen Survey Response Nearest Residence T. Bansen 0.65 / 203 Interview Adult, Teen, Child Milk Animal T. Bansen 0.65 / 203 Interview Adult, Teen, Child Goats, Survey Response K Meat Animal T. Bansen 0.65 / 203 Interview Adult, Teen, Child Survey Response Vegetable Garden T. Bansen 0.65 / 203 Interview Adult, Teen, Child Survey Response (D Groundwater T. Bansen 0.65 / 203 Interview Adult, Teen, Child Survey Response 0, Nearest Residence D. Robertson 0.73 / 224 Interview Adult, Teen No Survey Response Milk Animal None None None None L Meat Animal D. Robertson 0.73 / 224 City Register Adult, Teen No Survey Response Vegetable Garden Stratman 0.75 / 232 Interview Adult Survey Response Groundwater D. Robertson 0.73 / 224 City Register Adult, Teen No Survey Response Nearest Residence M. Bensen 1.06 / 257 City Register Adult No Survey Response Milk Animal None None None None M Meat Animal B. Wrich 2.42 / 250 City Register Adult, Teen No Survey Response Vegetable Garden D. Russell 1.21 / 246 City Register Adult No Survey Response Groundwater M. Bensen 1.06 / 257 City Register Adult No Survey Response (1) Approximate age categories in receptor deck for evaluating dose commitment:

Infant 0-1 Yr.

Child 1-11 Yrs.

Teen 12-17 Yrs.

Adult Over 17 Yrs.\

n al 4. L-nd Use Su- m - -

Table 4.0 Environmental Land Use Survey (continued)

Sector Type of Use Owner's Name (miles/degrees) Chniqu Age Group Remarks Nearest Residence D. Nielsen 1.20 / 263 City Register Adult No Survey Response Milk Animal None - None None None N Meat Animal J. Anderson 3.25 / 281 Mail Survey Adult Vegetable Garden D. Nielsen 1.20 / 263 City Register Adult No Survey Response Groundwater D. Nielsen 1.20 / 263 City Register Adult No Survey Response Nearest Residence G. Wachter 2.27 / 302 Mail Survey Adult, Child, Infant Milk Animal None None None None P Meat Animal G. Wachter 2.27 / 302 Mail Survey Adult, Child, Infant Vegetable Garden G. Wachter 2.27 / 302 Mail Survey Adult, Child, Infant Groundwater G. Wachter 2.27 / 302 Mail Survey Adult, Child, Infant CD Nearest Residence R. Hansen 2.40 / 318 City Register Adult No Survey Response 0 None None None Milk Animal None Q Meat Animal None None None None Vegetable Garden R. Hansen 2.40 / 318 City Register Adult No Survey Response Groundwater R. Hansen 2.40 / 318 City Register Adult No Survey Response Nearest Residence K. Kelley 2.08 / 330 Interview Adult No Survey Response Milk Animal None None None None R Meat Animal None None None None Vegetable Garden S. Sorensen 4.01 / 329 City Register Adult, Teen No Survey Response Groundwater Sonderup 3.73 / 328 Interview Adult (1) Approximate age categories in receptor deck for evaluating dose commitment:

Infant 0-1 Yr.

Child 1-11 Yrs.

Teen 12-17 Yrs.

Adult Over 17 Yrs.

Review of Environmental Inc., Quality Assurance Program Fort Calhoun Station contracts with Environmental Inc., Midwest Laboratory (vendor) to perform radioanalysis of environmental samples. Environmental Inc.

participates in interlaboratory comparison (cross-check) programs, as part of its quality control program. These programs are operated by agencies such as the Department of Energy, which supply blind-spike environmental type samples such as milk or water containing concentrations of radionuclides unknown to the testing laboratory. This type of program provides an independent check of the analytical laboratory's procedures and processes, and provides indication of possible weaknesses. In addition, Environmental Inc. has its own in-house QA program of blind-spike and duplicate analyses.

Of the 52 samples analyzed in the Interlaboratory Comparison Crosscheck program, one had a failed result. An 1-131 sample was analyzed three times, with an average result of 28.4 +/- 1.2 pCi/L. Control limits were 16.9 - 27.3 pCi/L. When the sample was analyzed a fourth time and re-averaged, results were 24.89 pCi/L and were within limits. These QA results had no impact on Fort Calhoun sample results.

The vendor laboratory performed approximately 168 In-House duplicate samples for the year. Of these, two were listed as failures, a Gross Beta sample and a K-40 sample. The vendor reviewed their results, and determined that the failures were due to a 200-minute or longer count time, which resulted in a lower error. The vendor investigated and reported the results properly. These sample results had no impact on Fort Calhoun sample results.

The vendor laboratory also participated in the Department of Energy's Mixed Analyte Performance Evaluation Program. Of the 106 samples submitted to the vendor, six failed the acceptance criteria. These samples contained Pu-238, Pu-239/40, U-233/4 and U-238. The vendor investigated and determined that the cause of the failures was due to the incomplete dissolution of the samples. When four of the samples, which were of soil, were re-analyzed, the results were satisfactory. These test results had no impact on Fort Calhoun samples and were documented by the vendor.

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- Environmental, Inc.

Midwest Laboratory an Allegheny Technologies Co.

700 Landwehr Road: Northbrook, IL 60062-2310 ph. (847) 564-0700 ffax (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, 2006 through December, 2006

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

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

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

The results in Table A-2 list results for thermoluminescent dosimeters (TLDs), via International Intercomparison of Environmental Dosimeters, when available, and internal laboratory testing.

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.

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.

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 determination Gamma Emitters 5 to 100 pCi/liter or kg 5.0 pCi/liter

> 100 pCi/liter or kg 5% of known value Strontium-89b 5 to 50 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 + 10 = (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-131, < 55 pCi/liter 6.0 pCi/liter Iodine-129b > 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 a From 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 Results Limits Acceptance STW-1 078 01/16/06 Sr-89 49.9 + 3.5 50.2 41.5 -58.9 Pass STW-1 078 01/16/06 Sr-90 31.5 + 1.5 30.7 22.0 - 39.4 Pass STW-1079 01/16/06 Ba-1 33 86.5 +/-4.1 95.0 78.6-111.0 Pass STW-1 079 01/16/06 Co-60 96.3 +/-4.1 95.3 86.6 - 104.0 Pass STW-1079 01/16/06 Cs-1 34 22.6 + 3.0 23.1 14.4 -31.8 Pass STW-1079 01/16/06 Cs-137 109.0 + 5.9 111.0 101.0 - 121.0 Pass STW-1079 01/16/06 Zn-65 198.0 +/- 11.2 192.0 159.0 - 225.0 Pass STW-1080 01/16/06 Gr. Alpha 10.8 +/- 1.4 9.6 1.0 - 18.3 Pass STW-1 080 01/16/06 Gr. Beta 56.9 +/- 1.9 61.9 44.6 - 79.2 Pass STW-1081 01/16/06 Ra-226 4.3 + 0.4 4.6 3.4 - 5.8 Pass STW-1081 01/16/06 Ra-228 7.1 +/-1.8 6.6 3.7 - 9.5 Pass STW-1081 01/16/06 Uranium 20.7 +/- 0.5 22.1 16.9 -27.3 Pass STW-1 088 04/10/06 Sr-89 29.0 +/- 1.8 32.4 23.7 -41.1 Pass STW-1 088 04/10/06 Sr-90 8.7 +/- 1.0 9.0 0.3 - 17.7 Pass STW-1089 04/10/06 Ba-1 33 10.3 +/- 0.4 10.0 1.3 - 18.7 Pass STW-1 089 04/10/06 Co-60 114.0 +/-2.8 113.0 103.0 - 123.0 Pass STW-1 089 04/10/06 Cs-1 34 41.9 +/- 1.4 43.4 34.7 - 52.1 Pass STW-1 089 04/10/06 Cs-1 37 208.0 +/- 1.1 214.0 195.0 - 233.0 Pass STW-1 089 04/10/06 Zn-65 154.0 +/-0.8 152.0 126.0 - 178.0 Pass STW-1090 04/10/06 Gr. Alpha 13.4 +/- 1.1 21.3 12.1 -30.5 Pass STW-1 090 04/10/06 Gr. Beta 27.7 +/- 2.1 23.0 14.3 -31.7 Pass STW-1091 04/10/06 1-131 22.0 +/- 0.3 19.1 13.9 -24.3 Pass STW-1 092 04/10/06 H-3 7960.0 +/- 57.0 8130.0 6720.0 - 9540.0 Pass STW-1092 04/10/06 Ra-226 2.9 +/- 0.4 3.0 2.2 - 3.8 Pass STW-1092 04/10/06 Ra-228 20.9 +/- 1.2 19.1 10.8 -27.4 Pass STW-1092 04/10/06 Uranium 68.6 +/- 3.4 69.1 57.1 -81.1 Pass STW-1 094 07/10/06 Sr-89 15.9 +/- 0.7 19.7 11.0 - 28.4 Pass STW- 1094 07/10/06 Sr-90 24.3 +/- 0.4 25.9 17.2 -34.6 Pass STW-1095 07/10/06 Ba-1 33 94.9 +/- 8.9 88.1 72.9 - 103.0 Pass STW-1095 07/10/06 Co-60 104.0 +/- 1.8 99.7 91.0 - 108.0 Pass STW-1095 07/10/06 Cs-1 34 48.7 + 1.3 54.1 45.4 - 62.8 Pass STW-1095 07/10/06 Cs-1 37 236.0 +/- 3.0 238.0 217.0 -259.0 Pass STW-1095 07/10/06 Zn-65 126.0 +/- 8.0 121.0 100.0 - 142.0 Pass STW-1 096 07/10/06 Gr. Alpha 10.9 +/- 1.0 10.0 1.3 - 18.6 Pass STW-1096 07/10/06 Gr. Beta 9.7 +/- 0.4 8.9 0.2 -17.5 Pass STW-1097 07/10/06 Ra-226 11.0 +/-0.5 10.7 7.9 -13.5 Pass STW-1097 07/10/06 Ra-228 12.2 +/-0.8 10.7 6.1 -15.3 Pass STW-1097 07/10/06 Uranium 43.4 +/- 0.1 40.3 33.3 -47.3 Pass A1-I

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 Acceptance STW-1104 10/06/06 Sr-89 38.4 +/- 1.3 39.9 31.2 -45.7 Pass STW-1104 10/06/06 Sr-90 15.5 +/- 0.5 16.0 7.3 -24.7 Pass STW-1105 10/06/06 Ba-133 64.9 +/- 2.8 70.2 58.1 -82.3 Pass STW-1105 10/06/06 Co-60 61.6 +/- 1.0 62.3 53.6 -71.0 Pass STW-1105 10/06/06 Cs-134 29.0 +/- 0.9 29.9 21.2 -38.6 Pass STW-1105 10/06/06 Cs-137 77.8 +/- 2.4 78.2 69.5 -86.9 Pass STW-1105 10/06/06 Zn-65 293.0 +/- 2.4 277.0 229.0 - 325.0 Pass STW-1106 10/06/06 Gr. Alpha 23.9 +/- 2.5 28.7 16.3 -41.1 Pass STW-1106 10/06/06 Gr. Beta 23.7 +/- 1.4 20.9 12.2 -29.6 Pass STW-1107 d 10/06/06 1-131 28.4 +/- 1.2 22.1 16.9 -27.3 Fail STW-1108 10/06/06 Ra-226 14.5 +/- 0.5 14.4 10.7 -18.1 Pass STW-1108 10/06/06 Ra-228 6.6 +/- 0.4 5.9 3.3 -8.4 Pass STW-1108 10/06/06 Uranium 2.9 +/- 0.1 3.2 0.0 -8.4 Pass STW-1109 10/06/06 H-3 3000.0 +/- 142.0 3050.0 2430.0 - 3670.0 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing in drinking water conducted 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, 1 determination) and control limits as provided by ERA.

The reported result was an average of three analyses, results ranged from 25.36 to 29.23 pCi/L.

A fourth analysis was performed, result of analysis, 24.89 pCi/L.

Al -2

TABLE A-2. Crosscheck program results; Thermoluminescent Dosimetry, (TLD, CaSO4: Dy Cards).

mR Lab Code Date Known Lab Result Control Description Value _ 2 sigma Limits Acceptance Environmental, Inc.

2006-1 6/5/2006 30 cm 54.81 70.73 +/- 0.69 38.37 -71.25 Pass 2006-1 6/5/2006 60 cm 13.70 16.71 +/- 1.89 9.59 - 17.81 Pass 2006-1 6/5/2006 60 cm 13.70 16.69 +/- 0.94 9.59 - 17.81 Pass 2006-1 6/5/2006 90 cm 6.09 6.57 +/- 0.82 4.26 - 7.92 Pass 2006-1 6/5/2006 120 cm 3.43 3.65 +/- 0.22 2.40 - 4.46 Pass 2006-1 6/5/2006 120 cm 3.43 3.09 +/- 0.33 2.40 - 4.46 Pass 2006-1 6/5/2006 150 cm 2.19 2.35 +/- 0.38 1.53 - 2.85 Pass 2006-1 6/5/2006 150 cm 2.19 1.98 +/- 0.10 1.53 - 2.85 Pass 2006-1 6/5/2006 180 cm 1.52 1.56 +/- 0.26 1.06 -1.98 Pass Environmental, Inc.

2006-2 11/6/2006 30 cm. 55.61 60.79 +/- 1.32 38.93 - 72.29 Pass 2006-2 11/6/2006 40 cm. 31.28 35.93 +/- 3.70 21.90 -40.66 Pass 2006-2 11/6/2006 50 cm. 20.02 21.55 +/- 1.20 14.01 - 26.03 Pass 2006-2 11/6/2006 60 cm. 13.90 14.90 +/- 1.42 9.73 - 18.07 Pass 2006-2 11/6/2006 75 cm. 8.90 8.03 +/- 0.51 6.23-11.57 Pass 2006-2 11/6/2006 90 cm. 6.18 6.88 +/- 0.68 4.33 - 8.03 Pass 2006-2 11/6/2006 120 cm. 3.48 2.90 +/- 0.20 2.44 - 4.52 Pass 2006-2 11/6/2006 150 cm. 2.22 1.99 +/- 0.07 1.55 -2.89 Pass 2006-2 11/6/2006 180 cm. 1.54 1.79 +/- 0.94 1.08 -2.00 Pass A2-1

TABLE A-3. In-House "Spike" Samples Concentration (pCi/L)a Lab Code b Date Analysis Laboratory results Known Control 2s, n=l C Activity Limits d Acceptance SPW-301 1/20/2006 Fe-55 2700.10 +/- 70.00 2502.50 2002.00 - 3003.00 Pass SPAP-1 224 3/7/2006 Cs-134 37.13 +/- 3.70 39.52 29.52 - 49.52 Pass SPAP-1224 3/7/2006 Cs-137 118.25 +/- 8.97 119.30 107.37 - 131.23 Pass SPAP-1224 3/7/2006 Gr. Beta 520.32 +/- 7.42 455.00 364.00 - 637.00 Pass S PW- 1228 3/7/2006 H-3 70891.00 + 719.00 75394.00 60315.20 - 90472.80 Pass SPW-1230 3/7/2006 Cs-1 34 38.58 +2.10 39.51 29.51 -49.51 Pass SPW-1230 3/7/2006 Cs-1 37 59.44 +4.51 59.65 49.65 - 69.65 Pass SPMI-1232 3/7/2006 Cs-1 34 41.20 + 1.33 39.51 29.51 -49.51 Pass SPMI-1232 3/7/2006 Cs-137 57.82 +/- 3.96 59.65 49.65 - 69.65 Pass W-30906 3/9/2006 Gr. Alpha 24.24 +/- 0.47 20.08 10.04 - 30.12 Pass W-30906 3/9/2006 Gr. Beta 63.79 +/- 0.48 65.73 55.73 - 75.73 Pass SPW-2750 4/27/2006 Ni-63 116.00 _ 2.49 100.00 60.00 - 140.00 Pass SPW-2869 5/1/2006 Fe-55 19473.00 + 188.00 23332.00 18665.60 - 27998.40 Pass SPAP-2871 5/1/2006 Cs-1 34 33.97 +/- 1.10 37.50 27.50 -47.50 Pass SPAP-2871 5/1/2006 Cs-1 37 114.44 + 2.81 118.90 107.01 - 130.79 Pass SPW-2875 5/1/2006 H-3 71057.00 + 730.20 75394.00 60315.20 - 90472.80 Pass STSO-3155 5/1/2006 Co-60 7950.80 + 67.29 7750.00 6975.00 - 8525.00 Pass STSO-3155 5/1/2006 Cs-134 12.49 _+0.13 11.59 1.59 -21.59 Pass STSO-3155 5/1/2006 Cs-1 37 14.10 _+0.12 11.63 1.63 -21.63 Pass SPAP-2873 5/2/2006 Gr. Beta 1724.80 + 4.51 1744.00 1395.20 -2441.60 Pass SPF-3183 5/10/2006 Cs-137 2.47 + 0.03 2.38 1.43 - 3.33 Pass SPF-3183 5/10/2006 Cs-1 34 0.73 + 0.01 0.74 0.44 -1.04 Pass SPW-3460 5/26/2006 C-14 4009.60 +/- 14.43 4741.00 2844.60 - 6637.40 Pass W-60606 6/6/2006 Gr. Alpha 21.94 +/- 0.46 20.08 10.04 -30.12 Pass W-60606 6/6/2006 Gr. Beta 58.17 +/- 0.49 65.73 55.73 - 75.73 Pass SPW-3988 6/16/2006 Cs-1 34 35.56 +/- 1.40 36.00 26.00 -46.00 Pass SPW-3988 6/16/2006 Cs-137 60.23 +/- 2.72 59.27 49.27 -69.27 Pass SPW-3988 6/16/2006 1-131(G) 94.01 +/- 4.38 99.30 89.30 - 109.30 Pass SPW-3988 6/16/2006 Sr-89 52.40 +/- 4.23 58.16 46.53 - 69.79 Pass SPW-3988 6/16/2006 Sr-90 45.35 +/- 1.95 41.21 32.97 - 49.45 Pass SPMI-3990 6/16/2006 Cs-1 34 35.52 +/- 5.05 36.00 26.00 -46.00 Pass SPMI-3990 6/16/2006 Cs-1 37 56.78 +/- 3.86 59.27 49.27 - 69.27 Pass SPMI-3990 6/16/2006 1-131(G) 95.04 +/- 5.05 99.30 89.30 - 109.30 Pass SPMI-3991 6/16/2006 1-131 96.55 +/- 0.87 99.30 79.44 - 119.16 Pass SPW-4356 7/5/2006 1-131 80.88 +/- 1.09 77.23 61.78 - 92.68 Pass W-90506 9/5/2006 Gr. Alpha 23.11 +/- 0.45 20.08 10.04 -30.12 Pass W-90506 9/5/2006 Gr. Beta 65.01 +/- 0.51 65.73 55.73 - 75.73 Pass SPAP-6950 9/30/2006 Cs-1 34 28.93 +/- 1.56 32.65 22.65 - 42.65 Pass SPAP-6950 9/30/2006 Cs-1 37 116.62 +/- 2.97 117.75 105.98 - 129.53 Pass SPAP-6952 9/30/2006 Gr. Beta 52.96 +/- 0.14 53.50 42.80 - 74.90 Pass A3-1

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

Lab Code Date Analysis Laboratory results Known Control 2s, n=1b Activity Limitsc Acceptance SPW-6954 9/30/2006 Cs-134 63.29 +/- 8.24 65.30 55.30 - 75.30 Pass SPW-6954 9/30/2006 Cs-137 60.41 +/- 7.53 58.87 48.87 - 68.87 Pass SPMI-6956 9/30/2006 Cs-1 34 69.26 +/- 4.85 65.31 55.31 - 75.31 Pass SPMI-6956 9/30/2006 Cs-137 61.35 +/- 7.62 58.87 48.87 - 68.87 Pass W-120106 12/1/2006 Gr. Alpha 22.40 +/- 1.03 20.08 10.04 -30.12 Pass W-120106 12/1/2006 Gr. Beta 63.70 +/- 1.14 65.73 55.73 - 75.73 Pass SPAP-9476 12/29/2006 Gr. Beta 57.51 +/- 0.14 53.16 42.53 - 74.42 Pass SPAP-9478 12/29/2006 Cs-134 26.84 +/- 1.23 30.06 20.06 - 40.06 Pass SPAP-9478 12/29/2006 Cs-1 37 110.54 +/- 3.12 117.10 105.39 - 128.81 Pass SPW-9480 12/29/2006 H-3 68972.20 +/- 748.00 72051.60 57641.28 - 86461.92 Pass SPW-9483 12/29/2006 Tc-99 29.43 +/- 0.84 32.98 20.98 - 44.98 Pass SPW-9488 12/29/2006 Cs-1 34 61.35 +/- 1.65 60.10 50.10 - 70.10 Pass SPW-9488 12/29/2006 Cs-137 60.30 +/- 2.76 56.80 46.80 - 66.80 Pass SPMI-9490 12/29/2006 Cs-1 34 58.99 +/- 5.43 60.10 50.10 - 70.10 Pass SPMI-9490 12/29/2006 Cs-137 54.16 +/- 7.85 56.80 46.80 - 66.80 Pass SPF-9492 12/29/2006 Cs-134 0.64 +/- 0.01 0.60 0.36 - 0.84 Pass SPF-9492 12/29/2006 Cs-137 2.61 +/- 0.03 2.34 1.40 - 3.28 Pass a Liquid sample results are reported in pCi/Liter, air filters( pCi/filter), charcoal (pCi/m3), and solid samples (pCi/g).

b Laboratory codes as follows: W (water), MI (milk), AP (air filter), SO (soil), VE (vegetation),

CH (charcoal canister), F (fish).

c Results are based on single determinations.

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

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

A3-2

TABLE A-4. In-House "Blank" Samples

... . . . . . . Concentration (pCi/L)a Lab Code Sample Date Analysisb Laboratory results (4.66a) Acceptance Type . LD . Activityc Criteria (4.66 cv)

SPW-302 water 1/20/2006 Fe-55 1061 -91 +/- 637 1000 SPAP-1225 Air Filter 3/7/2006 Gr. Beta 1.16 -0.512 +/- 51.20 3.2 SPW-1231 water 3/7/2006 Cs-134 2.71 10 SPW-1231 water 3/7/2006 Cs-1 37 2.05 10 W-30906 water 3/9/2006 Gr. Alpha 0.037 0.005 +/- 0.026 1 W-30906 water 3/9/2006 Gr. Beta 0.076 -0.016 +/- 0.052 3.2 SPW-2751 water 4/27/2006 Ni-63 1.48 0.37 +/- 0.91 20 SPW-2868 water 5/1/2006 Fe-55 18.07 4.33 +/- 11.27 1000 SPW-2874 water 5/1/2006 H-3 166.00 -8.3 +/- 86.9 200 SPAP-2872 Air Filter 5/2/2006 Gr. Beta 1.18 -3.65 +/- 0.64 3.2 SPF-3154 Fish 5/10/2006 Cs-134 16.4 100 SPF-3154 Fish 5/10/2006 Cs-137 13.7 100 SPW-3461 water 5/26/2006 C-14 10.20 -7.9 + 5.20 200 W-60606 water 6/6/2006 Gr. Alpha 0.05 0.013 +/- 0.037 1 W-60606 water 6/6/2006 Gr. Beta 0.16 -0.044 +/- 0.11 3.2 SPW-3989 water 6/16/2006 Cs-134 3.00 10 SPW-3989 water 6/16/2006 Cs-137 3.65 10 SPW-3989 water 6/16/2006 1-131 0.21 0.045 + 0.14 0.5 SPW-3989 water 6/16/2006 1-131(G) 8.34 20 SPW-3989 water 6/16/2006 Sr-89 0.54 0.005 +/- 0.45 5 SPW-3989 water .6/16/2006 Sr-90 0.58 -0.079 +/- 0.26 1 SPMI-3991 Milk 6/16/2006 Cs-134 4.42 10 SPMI-3991 Milk 6/16/2006 Cs-137 3.88 10 SPMI-3991 Milk 6/16/2006 1-131 0.28 -0.22 +/- 0.19 0.5 SPMI-3991 Milk 6/16/2006 1-131(G) 3.76 20 SPMI-3991 Milk 6/16/2006 Sr-89 0.61 -0.25 +/- 0.76 5 SPMI-3991 d Milk 6/16/2006 Sr-90 0.52 0.88 +/- 0.34 1 W-90506 water 9/5/2006 Gr. Alpha 0.06 0.00 +/- 0.04 1 W-90506 water 9/5/2006 Gr. Beta 0.16 0.05 +/- 0.11 3.2 SPMI-6383 Milk 9/14/2006 Sr-89 0.97 -0.18 +/- 0.92 5 SPMI-6383 d Milk 9/14/2006 Sr-90 0.57 0.65 +/- 0.33 1 SPAP-6949 Air Filter 9/30/2006 Cs-134 0.89 100 SPAP-6949 Air Filter 9/30/2006 Cs-1 37 0.91 100 SPAP-6951 Air Filter 9/30/2006 Gr. Beta 1.12 -0.54 +/- 0.64 3.2 SPW-6953 water 9/30/2006 Cs-1 34 3.91 10 SPW-6953 water 9/30/2006 Cs-137 5.61 10 SPW-6953 water 9/30/2006 Sr-89 0.79 -0.14 +/- 0.64 5 SPW-6953 water 9/30/2006 Sr-90 0.60 0.11 +/- 0.29 1 A4-1

TABLE A-4. In-House "Blank" Samples

... Concentration (pCi/L)a Lab Code Sample Date Analysisb Laboratory results (4.66cr) Acceptance Type LLD -Activity' Criteria (4.66 a)

SPMI-6955 Milk 9/30/2006 Cs-1 34 2.86 10 SPMI-6955 Milk 9/30/2006 Cs-137 2.39 10 SPMI-6955 Milk 9/30/2006 1-131(G) 9.98 0.5 W-120106 water 12/1/2006 Gr. Alpha 0.11 .0.066 +/- 0.072 1 W-120106 water 12/1/2006 Gr. Beta 0.30 0.093 +/- 0.16 3.2 SPAP-9477 Air Filter 12/29/2006 Gr. Beta 1.13 -0.37 +/- 0.66 3.2 SPAP-9479 Air Filter 12/29/2006 Cs-137 0.87 100 SPW-9481 water 12/29/2006 H-3 146.2 63.2 +/- 80.1 200 SPW-9483 water 12/29/2006 Tc-99 0.95 -1.20 +/- 0.56 10 SPW-9489 water 12/29/2006 Cs-1 34 2.30 10 SPMI-9491 Milk 12/29/2006 Cs-134 3.10 10 SPMI-9491 Milk 12/29/2006 Cs-137 2.90 10 SPMI-9491 Milk 12/29/2006 1-131(G) 8.00 20 SPF-9493 Fish 12/29/2006 Cs-134 7.6 100 SPF-9493 Fish 12/29/2006 Cs-137 7.9 100 a Liquid sample results are reported in pCi/Liter, air filters( pCi/filter), charcoal (pCi/charcoal canister), and solid samples (pCi/kg).

b 1-131(G); iodine-131 as analyzed by gamma spectroscopy.

c Activity reported is a net activity result. For gamma spectroscopic analysis, activity detected below the LLD value is not reported d 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 Lab Code Date Analysis First Result Second Result Result Acceptance AP-7466, 7467 1/3/2006 Be-7 0.053 +/- 0.015 0.057 +/- 0.011 0.055 +/- 0.009 Pass AP-7513, 7514 1/3/2006 Be-7 0.033 +/- 0.008 0.036 +/- 0.008 0.035 +/- 0.006 Pass AP-7555, 7556 1/3/2006 Be-7 0.053 +/- 0.007 0.054 +/- 0.008 0.053 +/- 0.005 Pass MI-154, 155 1/10/2006 K-40 1254.20 +/- 87.75 1369.60 +/- 102.80 1311.90 +/- 67.58 Pass MI-217, 218 1/11/2006 K-40 1258.00 +/- 118.00 1313.00 +/- 98.00 1285.50 +/- 76.69 Pass MI-217, 218 1/11/2006 Sr-90 1.27 +/- 0.37 0.92 +/- 0.33 1.10 +/- 0.25 Pass MI-287, 288 1/17/2006 K-40 1383.10 +/- 110.90 1457.80 +/- 119.10 1420.45 +/- 81.37 Pass MI-287, 288 1/17/2006 Sr-90 0.74 +/- 0.38 0.94 +/- 0.37 0.84 +/- 0.27 Pass WW-314,315 1/19/2006 Gr. Beta 9.21 +/- 1.72 11.52 +/- 1.93 10.37 +/- 1.29 Pass WW-314, 315 1/19/2006 H-3 168.64 +/- 94.94 210.12 +/- 96.51 189.38 +/- 67.69 Pass SWT-577, 578 1/31/2006 Gr. Beta 3.06 +/- 0.66 3.68 +/- 0.64 3.37 +/- 0.46 Pass SWU-598, 599 1/31/2006 Gr. Beta 2.03 +/- 0.39 1.97 +/- 0.40 2.00 +/- 0.28 Pass SWU-598, 599 1/31/2006 H-3 260.10 +/- 98.20 134.10 +/- 93.50 197.10 +/- 67.80 Pass F-3311, 3 3 1 2 b 2/9/2006 Gr. Beta 4.12 +/- 0.14 3.82 +/- 0.13 3.97 +/- 0.10 Fail F-3311, 3312 2/9/2006 K-40 2.68 +/- 0.37 2.76 +/- 0.39 2.72 +/- 0.27 Pass SW-780, 781 2/14/2006 Gr. Alpha 4.09 +/- 1.52 3.22 +/- 1.37 3.66 +/- 1.03 Pass SW-780, 781 2/14/2006 Gr. Beta 5.91 +/- 0.90 5.89 +/- 0.92 5.90 +/- 0.64 Pass DW-934, 935 2/17/2006 1-131 0.35 +/- 0.22 0.31 +/- 0.25 0.33 +/- 0.16 Pass DW-1024, 1025 2/24/2006 1-131 0.24 +/- 0.26 0.53 +/- 0.24 0.39 +/- 0.18 Pass MI-1078, 1079 3/1/2006 Sr-90 1.42 +/- 0.39 1.30 +/- 0.62 1.36 +/- 0.37 Pass F-1357, 1358 3/10/2006 Gr. Beta 3.77 +/- 0.07 3.71 +/- 0.07 3.74 +/- 0.05 Pass F-1357, 1358 3/10/2006 K-40 2.46 +/- 0.32 2.32 +/- 0.44 2.39 +/- 0.27 Pass MI-1469, 1470 3/14/2006 K-40 1396.30 +/- 120.80 1335.60 +/- 113.80 1365.95 +/- 82.98 Pass CF-1538, 1539 3/21/2006 K-40 13.66 +/- 0.81 13.97 +/- 0.68 13.81 +/- 0.53 Pass WW-1583, 1584 3/22/2006 Gr. Beta 7.66 +/- 0.73 8.87 +/- 0.75 8.26 +/- 0.52 Pass DW-1955, 1956 3/27/2006 Gr. Beta 2.25 +/- 0.60 3.15 +/- 0.59 2.70 +/- 0.42 Pass MI-1760, 1761 3/29/2006 K-40 1271.00 +/- 89.00 1378.00 +/- 113.00 1324.50 +/- 71.92 Pass AP-2603, 2604 3/29/2006 Be-7 0.067 +/- 0.015 0.056 +/- 0.010 0.062 +/- 0.009 Pass E-1997, 1998 4/3/2006 Gr. Beta 1.82 +/- 0.07 1.87 +/- 0.07 1.85 +/- 0.05 Pass E-1997, 1998 4/3/2006 K-40 1.28 +/- 0.15 1.24 +/- 0.21 1.26 +/- 0.13 Pass AP-2818, 2819 4/3/2006 Be-7 0.06 +/- 0.01 0.06 +/- 0.01 0.06 +/- 0.01 Pass SWU-2863, 2864 4/3/2006 Gr. Beta 3.20 +/- 1.26 4.77 +/- 1.30 3.99 +/- 0.91 Pass SS-2389, 2390 4/11/2006 Gr. Beta 10.53 +/- 0.96 9.38 +/- 0.84 9.96 +/- 0.64 Pass SS-2389, 2390 4/11/2006 K-40 5.51 +/- 0.42 5.79 +/- 0.40 5.65 +/- 0.29 Pass DW-2773, 2774 4/21/2006 1-131 0.74 +/- 0.23 0.53 +/- 0.40 0.63 +/- 0.23 Pass SL-2932, 2933 5/1/2006 Be-7 1.28 +/- 0.19 1.27 +/- 0.17 1.28 +/- 0.13 Pass SL-2932, 2933 5/1/2006 Gr. Beta 6.09 +/- 0.33 5.65 +/- 0.31 5.87 +/- 0.23 Pass SL-2932, 2933 5/1/2006 K-40 3.13 +/- 0.41 3.09 +/- 0.36 3.11 +/- 0.27 Pass BS-3103, 3104 5/1/2006 Gr. Beta 8.27 +/- 1.46 9.03 +/- 1.59 8.65 +/- 1.08 Pass BS-3103, 3104 5/1/2006 K-40 6288.20 +/- 585.20 5643.70 +/- 599.80 5965.95 +/- 418.99 Pass MI-3037, 3038 5/2/2006 K-40 1238.90 +/- 98.59 1301.00 +/- 103.90 1269.95 +/- 71.62 Pass MI-3037, 3038 5/2/2006 Sr-90 1.76 +/- 0.42 1.48 +/- 0.42 1.62 +/- 0.29 Pass A5-1

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance MI-3124, 3125 5/9/2006 K-40 1032.30 +/- 91.12 1103.60 +/- 120.50 1067.95 +/- 75.54 Pass SW-3145, 3146 5/9/2006 Gr. Alpha 4.85 +/- 1.68 4.12 +/- 1.62 4.48 +/- 1.17 Pass SW-3145, 3146 5/9/2006 Gr. Beta 8.94 +/- 1.46 9.14 +/- 1.36 9.04 +/- 1.00 Pass MI-3236, 3237 5/10/2006 K-40 1412.40 + 119.10 1427.90 +/- 127.70 1420.15 + 87.31 Pass F-3422, 3423 5/19/2006 H-3 8175.00 + 252.00 8268.00 +/- 253.00 8221.50 + 178.54 Pass G-3491, 3492 5/24/2006 Gr. Beta 8.89 _ 0.18 9.03 +/- 0.19 8.96 +/- 0.13 Pass G-3491, 3492 5/24/2006 K-40 5.60 + 0.71 6.30 +/- 0.78 5.95 + 0.53 Pass SO-3539, 3540 5/24/2006 Gr. Beta 19.57 + 1.99 18.98 +/- 1.91 19.27 +/- 1.38 Pass SO-3539, 3540 5/24/2006 K-40 12.55 + 0.89 11.49 +/- 0.59 12.02 + 0.53 Pass WW-3751, 3752 5/25/2006 Gr. Beta 9.85 + 0.79 8.96 +/- 0.74 9.41 + 0.54 Pass F-3617, 3618 5/30/2006 K-40 2.42 + 0.38 2.53 +/- 0.37 2.47 +/- 0.27 Pass SL-3641, 3642 6/1/2006 Be-7 1.41 _ 0.19 1.31 +/- 0.27 1.36 +/- 0.17 Pass SL-3641, 3642 6/1/2006 Gr. Beta 5.03 + 0.18 5.30 +/- 0.19 5.17 +/- 0.13 Pass SL-3641, 3642 6/1/2006 K-40 2.21 + 0.26 2.14 +/- 0.37 2.18 +/- 0.23 Pass MI-3886, 3887 6/12/2006 K-40 1424.20 _ 118.20 1318.80 +/- 110.50 1371.50 +/- 80.90 Pass VE-3949, 3950 6/13/2006 Gr. Alpha 0.13 + 0.06 0.16 +/- 0.07 0.15 + 0.05 Pass VE-3949, 3950 6/13/2006 Gr. Beta 4.53 + 0.19 4.47 +/- 0.18 4.50 + 0.13 Pass VE-3949, 3950 6/13/2006 K-40 6.02 +/- 0.66 5.33 +/- 0.66 5.67 _ 0.47 Pass BS-4016, 4017 6/13/2006 Co-60 0.18 +/- 0.03 0.15 +/- 0.03 0.16 +/- 0.02 Pass BS-4016, 4017 6/13/2006 Cs-137 1.97 +/- 0.09 2.01 +/- 0.09 1.99 +/- 0.06 Pass BS-4016, 4017 6/13/2006 K-40 11.03 +/- 0.76 10.45 +/- 0.78 10.74 +/- 0.54 Pass MI-3992, 3993 6/14/2006 K-40 1358.50 +/- 166.40 1395.80 +/- 122.70 1377.15 +/- 103.37 Pass LW-4175, 4176 6/16/2006 H-3 482.11 +/- 90.25 397.50 +/- 86.88 439.81 +/- 62.63 Pass W-4130, 4131 6/21/2006 H-3 401.50 +/- 87.85 236.28 +/- 80.89 318.89 +/- 59.71 Pass AV-4330, 4331 6/26/2006 K-40 1717.10 +/- 244.30 1893.10 +/- 223.30 1805.10 +/- 165.49 Pass SWU-4489, 4490 6/27/2006 Gr. Beta 1.70 +/- 0.38 1.93 +/- 0.38 1.82 +/- 0.27 Pass AP-4909, 4910 6/29/2006 Be-7 0.11 +/- 0.01 0.11 +/- 0.02 0.11 +/-+0.01 Pass AP-4952, 4953 6/29/2006 Be-7 0.08 +/- 0.02 0.10 +/- 0.02 0.09 +/- 0.01 Pass AP-4930, 4931 7/3/2006 Be-7 0.08 +/- 0.02 0.07 +/- 0.01 0.08 +/- 0.01 Pass E-4399, 4400 7/5/2006 Gr. Beta 1.85 +/- 0.05 1.85 +/- 0.05 1.85 + 0.04 Pass E-4399, 4400 7/5/2006 K-40 1.25 +/- 0.19 1.24 +/- 0.18 1.25 + 0.13 Pass G-4420, 4421 7/5/2006 Be-7 0.82 +/- 0.20 0.61 +/- 0.14 0.72 +/- 0.12 Pass G-4420, 4421 7/5/2006 Gr. Beta 13.20 +/- 0.40 14.00 +/- 0.40 13.60 +/- 0.28 Pass G-4420, 4421 7/5/2006 K-40 9.96 +/- 0.44 10.06 +/- 0.82 10.01 +/- 0.47 Pass DW-60432, 60433 7/6/2006 Gr. Alpha 3.24 +/- 1.35 2.49 +/- 1.33 2.87 +/- 0.95 Pass DW-60514, 60515 7/10/2006 Gr. Alpha 3.70 +/- 1.12 3.09 +/- 1.16 3.40 +/- 0.81 Pass DW-60449, 60450 7/11/2006 Gr. Alpha 6.87 +/- 1.26 4.77 +/- 1.09 5.82 +/- 0.83 Pass MI-4599, 4600 7/12/2006 K-40 1403.50 +/- 118.80 1330.40 +/- 116.50 1366.95 +/- 83.20 Pass MI-4599, 4600 7/12/2006 Sr-90 0.59 +/- 0.34 0.70 +/- 0.35 0.65 +/- 0.24 Pass MI-4667, 4668 7/12/2006 K-40 1286.60 +/- 92.62 1358.60 +/- 158.40 1322.60 +/- 91.75 Pass LW-4823, 4824 7/14/2006 Gr. Beta 1.75 +/- 0.60 2.51 +/- 0.59 2.13 +/- 0.42 Pass A5-2

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance Acceptance DW-60502, 60503 7/19/2006 Gr. Alpha 16.27 +/- 2.49 21.41 +/- 3.21 18.84 +/- 2.03 Pass DW-60526, 60527 7/21/2006 Gr. Alpha 14.06 +/- 1.82 15.57 +/- 1.77 14.82 +/- 1.27 Pass DW-60539, 60540 7/21/2006 Gr. Alpha 5.09 +/- 0.95 6.23 +/- 1.05 5.66 +/- 0.71 Pass MI-5125, 5126 7/25/2006 K-40 1480.60 +/- 118.30 1402.60 +/- 120.80 1441.60 +/- 84.54 Pass DW-60609, 60610 7/26/2006 Gr. Alpha 1.00 +/- 1.10 2.70 +/- 1.30 1.85 +/- 0.85 Pass DW-60621, 60622 7/31/2006 Gr. Alpha 3.70 +/- 1.00 1.90 +/- 0.80 2.80 +/- 0.64 Pass SL-5265, 5266 8/1/2006 Be-7 1.10 +/- 0.46 1.38 +/- 0.52 1.24 +/- 0.35 Pass SL-5265, 5266 8/1/2006 Sr-90 0.10 +/- 0.03 0.16 +/- 0.03 0.13 +/- 0.02 Pass SL-5265, 5266 8/11/2006 Gr. Beta 4.41 +/- 0.41 3.46 +/- 0.57 3.94 +/- 0.35 Pass SL-5265, 5266 8/1/2006 K-40 1.19 +/- 0.52 0.87 +/- 0.52 1.03 +/- 0.37 Pass VE-5286, 5287 8/11/2006 Be-7 1.21 +/- 0.30 1.32 +/- 0.20 1.27 +/- 0.18 Pass VE-5286, 5287 8/1/2006 Gr. Beta 9.67 +/- 0.35 9.37 +/- 0.35 9.52 +/- 0.25 Pass VE-5286, 5287 8/1/2006 K-40 6.25 +/- 0.81 6.50 +/- 0.48 6.38 +/- 0.47 Pass SW-5383, 5384 8/8/2006 Gr. Alpha 3.24 +/- 1.35 2.94 +/- 1.35 3.09 +/- 0.96 Pass SW-5383, 5384 8/8/2006 Gr. Beta 4.86 +/- 0.86 5.46 +/- 0.87 5.16 +/- 0.61 Pass SW-5971, 5972 8/8/2006 H-3 119.90 +/- 78.14 144.41 +/- 79.23 132.15 +/- 55.64 Pass VE-5404, 5405 8/10/2006 Be-7 0.77 +/- 0.24 1.01 +/- 0.26 0.89 +/- 0.18 Pass VE-5404, 5405 8/10/2006 K-40 4.71 +/- 0.63 4.01 +/- 0.58 4.36 +/- 0.43 Pass DW-5480, 5481 8/11/2006 H-3 169.08 +/- 85.52 133.65 +/- 83.96 151.36 +/- 59.92 Pass DW-60645, 60646 8/15/2006 Gr. Alpha 10.41 +/- 1.78 10.97 +/- 1.85 10.69 +/- 1.28 Pass W-5602, 5603 8/16/2006 H-3 2118.79 +/- 151.55 2181.82 +/- 153.09 2150.30 +/- 107.71 Pass DW-60634, 60635 8/18/2006 Gr. Alpha 12.99 +/- 1.84 9.67 +/- 1.61 11.33 +/- 1.22 Pass DW-60634, 60635 8/18/2006 Gr. Beta 10.51 +/- 1.33 8.61 +/- 1.18 9.56 +/- 0.89 Pass MI-5793, 5794 8/22/2006 K-40 1264.00 +/- 115.00 1377.00 +/- 121.00 1320.50 +/- 83.47 Pass SWU-6150, 6151 8/29/2006 Gr. Beta 1.84 +/- 0.28 1.81 +/- 0.28 1.82 +/- 0.20 Pass DW-60657, 60658 8/29/2006 Gr. Alpha 2.33 +/- 0.80 2.90 +/- 0.78 2.62 +/- 0.56 Pass CF-7450, 7451 9/5/2006 Be-7 0.78 +/- 0.45 0.78 +/- 0.27 0.78 +/- 0.26 Pass SL-6085, 6086 9/5/2006 Co-60 0.22 +/- 0.03 0.21 +/- 0.02 0.22 +/- 0.02 Pass SL-6085, 6086 9/5/2006 Gr. Beta 5.47 +/- 0.69 4.63 +/- 0.58 5.05 +/- 0.45 Pass SL-6085, 6086 9/5/2006 K-40 1.91 +/- 0.28 2.06 +/- 0.41 1.99 +/- 0.25 Pass DW-60695, 60696 9/11/2006 Gr. Alpha 3.93 +/- 1.17 4.62 +/- 1.12 4.28 +/- 0.81 Pass LW-6266, 6267 9/13/2006 Gr. Beta 3.09 +/- 0.48 2.98 +/- 0.48 3.03 +/- 0.34 Pass MI-6424, 6425 9/19/2006 Sr-90 0.78 +/- 0.38 1.11 +/- 0.37 0.95 +/- 0.27 Pass DW-60715, 60716 9/19/2006 Gr. Alpha 1.30 +/- 1.00 2.23 +/- 1.01 1.77 +/- 0.71 Pass SO-6597, 6598 9/22/2006 Cs-137 0.18 +/- 0.04 0.18 +/- 0.04 0.18 +/- 0.03 Pass SO-6597, 6598 9/22/2006 K-40 10.25 +/- 0.66 10.11 +/- 0.64 10.18 +/- 0.46 Pass SWU-6718, 6719 9/26/2006 Gr. Beta 3.45 +/- 1.21 2.78 +/- 1.19 3.12 +/- 0.85 Pass SO-6668, 6669 9/27/2006 Cs-1 37 0.13 +/- 0.04 0.13 +/- 0.02 0.13 +/- 0.02 Pass SO-6668, 6669 9/27/2006 K-40 13.04 +/- 0.90 12.41 +/- 0.54 12.72 +/- 0.53 Pass A5-3

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance MI-6760, 6761 10/2/2006 K-40 1413.10 +/- 113.20 1187.30 +/- 155.20 1300.20 +/- 96.05 Pass 4.63 +/- 0.26 G-6797, 6798 10/2/2006 Be-7 4.70 +/- 0.31 4.56 +/- 0.41 Pass G-6797, 6798 10/2/2006 Gr. Beta 6.89 +/- 0.26 7.04 +/- 0.24 6.97 +/- 0.18 Pass G-6797, 6798 10/2/2006 K-40 5.39 +/- 0.35 4.36 +/- 0.47 4.88 +/- 0.29 Fail AP-7531, 7532 10/3/2006 Be-7 0.07 +/- 0.01 0.08 +/- 0.01 0.08 +/- 0.01 Pass AP-7552, 7553 10/3/2006 Be-7 0.08 +/- 0.02 0.08 +/- 0.01 0.08 +/- 0.01 Pass AP-7573, 7574 10/3/2006 Be-7 0.08 +/- 0.02 0.08 +/- 0.01 0.08 +/- 0.01 Pass SO-7103, 7104 10/4/2006 Cs-137 0.25 +/- 0.05 0.27 +/- 0.06 0.26 +/- 0.04 Pass SO-7103, 7104 10/4/2006 K-40 12.95 +/- 1.12 12.22 +/- 1.07 12.58 +/- 0.77 Pass DW-60759, 60760 10/5/2006 Gr. Alpha 4.93 +/- 0.97 5.04 +/- 1.03 4.99 +/- 0.71 Pass MI-7037, 7038 10/10/2006 K-40 1326.10 +/- 115.20 1251.40 +/- 115.70 1288.75 +/- 81.64 Pass VE-7058, 7059 10/10/2006 Gr. Alpha 0.18 +/- 0.11 0.32 +/- 0.14 0.25 +/- 0.09 Pass VE-7058, 7059 10/10/2006 Gr. Beta 9.21 +/- 0.34 8.83 +/- 0.36 9.02 +/- 0.25 Pass VE-7058, 7059 10/10/2006 K-40 10.90 +/- 0.65 10.42 +/- 0.80 10.66 +/- 0.52 Pass SS-7079, 7080 10/10/2006 Cs-1 37 0.04 +/- 0.01 0.04 +/- 0.02 0.04 +/- 0.01 Pass SS-7079, 7080 10/10/2006 Gr. Beta 12.23 +/- 2.46 11.76 +/- 2.23 11.99 +/- 1.66 Pass SS-7079, 7080 10/10/2006 K-40 7.23 +/- 0.36 7.37 +/- 0.40 7.30 +/- 0.27 Pass MI-7208, 7209 10/11/2006 K-40 1295.20 +/- 116.90 1386.90 +/- 119.10 1341.05 +/- 83.44 Pass CF-7450, 7451 10/18/2006 K-40 20.40 +/- 0.84 19.54 +/- 0.99 19.97 +/- 0.65 Pass LW-7945, 7946 10/26/2006 Gr. Beta 1.30 +/- 0.37 1.44 +/- 0.36 1.37 +/- 0.26 Pass F-7971, 7972 10/29/2006 K-40 3.63 +/- 0.54 3.33 +/- 0.43 3.48 +/- 0.34 Pass SWU-8194, 8195 10/31/2006 Gr. Beta 1.84 +/- 0.28. 1.43 +/- 0.28 1.64 +/- 0.20 Pass BS-8017, 8018 11/1/2006 Gr. Beta 10.54 +/- 1.72 10.17 +/- 1.73 10.36 +/- 1.22 Pass BS-8017, 8018 11/1/2006 K-40 10.00 +/- 0.53 9.60 +/- 0.69 9.80 +/- 0.44 Pass LW-8215, 8216 11/1/2006 Gr. Beta 2.23 +/- 0.61 1.64 +/- 0.37 1.93 +/- 0.35 Pass F-8345, 8346 11/2/2006 K-40 2.84 +/- 0.42 2.89 +/- 0.40 2.86 +/- 0.29 Pass BS-8366, 8367 11/2/2006 K-40 13.69 +/- 0.66 13.61 +/- 0.78 13.65 +/- 0.51 Pass MI-8083, 8084 11/6/2006 K-40 1295.00 +/- 121.20 1374.80 +/- 162.80 1334.90 +/- 101.48 Pass WW-8259, 8260 11/7/2006 H-3 337.00 +/- 95.00 295.00 +/- 93.00 316.00 +/- 66.47 Pass MI-8484, 8485 11/22/2006 K-40 1405.80 +/- 87.06 1390.70 +/- 103.60 1398.25 +/- 67.66 Pass SO-8619, 8620 11/27/2006 Cs-1 37 0.74 +/- 0.08 0.69 +/- 0.06 0.71 +/- 0.05 Pass SO-8619, 8620 11/27/2006 Gr. Alpha 16.54 +/- 5.65 12.24 +/- 4.90 14.39 +/- 3.74 Pass SO-8619, 8620 11/27/2006 Gr. Beta 24.99 +/- 3.88 28.66 +/- 3.95 26.82 +/- 2.77 Pass SO-8619, 8620 11/27/2006 K-40 12.21 +/- 1.11 12.92 +/- 0.83 12.57 +/- 0.69 Pass SWT-8641, 8642 11/29/2006 Gr. Beta 2.83 +/- 0.47 2.89 +/- 0.45 2.86 +/- 0.33 Pass SWT-9436, 9437 12/26/2006 Gr. Beta 2.39 +/- 0.64 2.25 +/- 0.60 2.32 +/- 0.44 Pass Note: Duplicate analyses are performed on every twentieth sample received in-house. Results are not listed for those analyses with activities that measure below the LLD.

a Results are reported in units of pCi/L, except for air filters (pCi/Filter), food products, vegetation, soil, sediment (pCi/g).

b 200 minute count time or longer, resulting in lower error.

A5-4

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

Concentration b Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STVE-1082 01/01/06 Am-241 0.16 +/- 0.06 0.16 0.11 -0.20 Pass STVE-1082 01/01/06 Co-57 10.40 +/- 0.20 8.58 6.00 - 11.15 Pass STVE-1 082 01/01/06 Co-60 5.00 +/- 0.20 4.52 3.16 -5.88 Pass STVE-1 082 e 01/01/06 Cs-134 < 0.20 0.00 Pass STVE-1082 01/01/06 Cs-137 3.40 +/- 0.20 3.07 2.15 -4.00 Pass STVE-1 082 01/01/06 Mn-54 6.90 +/- 0.20 6.25 4.37 -8.12 Pass STVE-1 082 t 01/01/06 Pu-238 0.08 +/- 0.03 0.14 0.10 -0.18 Fail STVE-1082 01/01/06 Pu-239/40 0.17 +/- 0.03 0.16 0.11 -0.21 Pass STVE-1082 01/01/06 Sr-90 1.40 +/- 0.20 1.56 1.09 - 2.03 Pass STVE-1082 01/01/06 U-233/4 0.24 +/- 0.05 0.21 0.15 -0.27 Pass STVE-1082 01/01/06 U-238 0.19 +/- 0.04 0.22 0.15 -0.28 Pass STVE-1 082 01/01/06 Zn-65 11.10 +/- 0.50 9.80 6.86 - 12.74 Pass STSO-1083 01/01/06 Am-241 54.60 +/- 5.50 57.08 39.96 - 74.20 Pass STSO-1083 01/01/06 Co-57 762.90 +/- 12.70 656.29 459.40 - 853.18 Pass STSO-1083 01/01/06 Co-60 504.90 +/- 3.10 447.10 312.97 -581.23 Pass STSO-1083 01/01/06 Cs-1 34 < 1.70 0.00 Pass STSO-1083 01/01/06 Cs-1 37 406.50 +/- 3.70 339.69 237.78 - 441.60 Pass STSO-1 083 01/01/06 K-40 719.20 +/- 18.40 604.00 422.80 - 785.20 Pass STSO-1 083 01/01/06 Mn-54 415.60 +/- 4.80 346.77 242.74 - 450.80 Pass STSO-1083 01/01/06 Ni-63 261.40 +/- 14.70 323.51 226.46 - 420.56 Pass STSO-1083 01/01/06 Pu-238 14.60 +/- 2.90 61.15 42.81 - 79.50 Fail STSO-1083 01/01/06 Pu-239/40 14.60 +/- 2.40 45.85 32.09 - 59.61 Fail STSO-1083 01/01/06 U-233/4 13.50 +/- 1.70 37.00 25.90 - 48.10 Fail STSO-1 083 01/01/06 U-238 15.40 +/- 1.80 38.85 27.20 - 50.50 Fail STSO-1 083 01/01/06 Zn-65 783.40 +/- 7.00 657.36 460.15 - 854.57 Pass STAP-1084 01/01/06 Gr. Alpha 0.26 +/- 0.02 0.36 0.00 - 0.72 Pass STAP-1084 01/01/06 Gr. Beta 0.51 +/- 0.03 0.48 0.24 -0.72 Pass STAP-1085 01/01/06 Am-241 0.12 +/- 0.02 0.09 0.07 -0.12 Pass STAP-1085 01/01/06 Co-57 4.32 +/- 0.10 4.10 2.87 - 5.32 Pass STAP-1085 01/01/06 Co-60 2.24 +/- 0.16 2.19 1.53 -2.84 Pass STAP-1085 01/01/06 Cs-1 34 2.96 +/- 0.19 2.93 2.05 - 3.81 Pass STAP-1085 01/01/06 Cs-1 37 2.64 +/- 0.20 2.53 1.77 -3.29 Pass STAP-1085' 01/01/06 Pu-238 0.03 +/- 0.01 0.07 0.05 - 0.09 Fail STAP-1085 01/01/06 Pu-239/40 < 0.01 0.00 Pass STAP-1085 01/01/06 Sr-90 0.77 +/- 0.21 0.79 0.55 - 1.03 Pass STAP-1085 01/01/06 U-233/4 0.03 +/- 0.01 0.02 0.01 - 0.03 Pass STAP-1085 01/01/06 U-238 0.02 +/- 0.01 0.02 0.01 - 0.03 Pass STAP-1085 01/01/06 Zn-65 3.94 +/- 0.44 3.42 2.40 - 4.45 Pass A6-1

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

b Concentration Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STW-1086 01/01/06 Am-241 1.29 +/- 0.05 1.30 0.91 - 1.69 Pass STW-1 086 01/01/06 Co-57 177.10 +/- 1.00 166.12 116.28 - 215.96 Pass STW-1086 01/01/06 Co-60 158.30 +/- 1.00 153.50 107.45 - 199.55 Pass STW-1086 01/01/06 Cs-1 34 96.40 +/- 1.50 95.10 66.57 - 123.63 Pass STW-1086 e 01/01/06 Cs-137 < 0.80 0.00 Pass STW-1086 01/01/06 Fe-55 102.50 +/- 18.10 129.60 90.72 - 168.48 Pass STW-1086 01/01/06 H-3 956.60 +/- 16.50 952.01 666.41 - 1238.00 Pass STW-1 086 01/01/06 Mn-54 335.30 +/- 2.20 315.00 220.50 - 409.50 Pass STW-1086 01/01/06 Ni-63 62.90 +/- 3.60 60.34 42.24 - 78.44 Pass STW-1086 01/01/06 Pu-238 0.96 +/- 0.07 0.91 0.70 - 1.30 Pass STW-1086 e 01/01/06 Pu-239/40 < 0.20 0.00 Pass STW-1086 01/01/06 Sr-90 12.80 +/- 1.60 13.16 9.21 -17.11 Pass STW-1086 01/01/06 Tc-99 22.30 +/- 1.20 23.38 16.37 -30.39 Pass STW-1086 01/01/06 *U-233/4 2.02 +/- 0.12 2.09 1.46 -2.72 Pass STW-1086 01/01/06 U-238 2.03 +/- 0.12 2.17 1.52 -2.82 Pass STW-1086 01/01/06 Zn-65 249.50 +/- 3.40 228.16 159.71 -296.61 Pass STW-1087 01/01/06 Gr. Alpha 0.59 +/- 0.10 0.58 0.00 -1.16 Pass STW-1 087 01/01/06 Gr. Beta 1.69 +/- 0.07 1.13 0.56 -1.70 Pass STVE-1098 e 07/01/06 Co-57 <0.14 0.00 Pass STVE-1098 g 07/01/06 Co-60 6.89 +/- 0.17 5.81 4.06 - 7.55 Pass 8TVE-1098 07/01/06 Cs-134 8.46 +/- 0.16 7.49 5.24 - 9.73 Pass STVE-1 098 07/01/06 Cs-137 6.87 +/- 0.29 5.50 3.85 -7.14 Pass STVE-1098 07/01/06 Mn-54 10.36 +/- 0.29 8.35 5.85 - 10.86 Pass STVE-1098 07/01/06 Zn-65 7.46 +/- 0.50 5.98 4.19 -7.78 Pass STSO-1099 07/01/06 Am-241 130.00 +/- 11.60 105.47 73.83 - 137.11 Pass STSO-1 099 07/01/06 Co-57 784.90 +/- 3.80 676.33 473.43 - 879.23 Pass STSO-1099 07/01/06 Co-60 2.10 +/- 0.90 1.98 0.00 - 5.00 Pass STSO-1099 07101/06 Cs-134 500.70 +/- 7.40 452.13 316.49 -587.77 Pass STSO-1099 07/01/06 Cs-137 624.20 +/- 4.90 525.73 368.01 - 683.45 Pass STSO-1099 07/01/06 K-40 701.30 +/- 3.40 604.00 423.00 - 785.00 Pass STSO-1099 07/01/06 Mn-54 699.20 +/- 5.20 594.25 415.98 - 772.52 Pass STSO-1099 07/01/06 Ni-63 614.40 +/- 17.10 672.30 470.60 - 874.00 Pass STSO-1 099 07/01/06 Pu-238 79.90 +/- 5.80 82.00 57.00 - 107.00 Pass STSO-1099 e 07/01/06 Pu-239/40 < 0.70 0.00 Pass STSO-1099 07/01/06 U-233/4 150.50 +/- 5.90 152.44 106.71 - 198.17 Pass STSO-1099 07/01/06 U-238 151.60 +/- 6.00 158.73 111.11 -206.35 Pass STSO-1099 07/01/06 Zn-65 1021.90 +/- 9.20 903.61 632.53 - 1175.00 Pass STAP-1 100 07/01/06 Am-241 0.16 +/- 0.03 0.14 0.10 -0.19 Pass STAP-1 100 07/01/06 Co-57 2.17 +/- 0.06 2.58 1.81 -3.36 Pass STAP-1100 07/01/06 Co-60 1.38 +/- 0.07 1.58 1.10 -2.05 Pass STAP-1 100 07/01/06 Cs-134 2.52 +/- 0.13 3.15 2.20 - 4.09 Pass A6-2

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

Concentration b Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STAP-1100 07/01/06 Cs-137 1.64 +/- 0.08 1.81 1.26 -2.35 Pass STAP-1100 07/01/06 Mn-54 1.76 +/- 0.18 1.92 1.34 -.2.50 Pass STAP-1100 07/01/06 Pu-238 0.09 +/- 0.02 0.12 0.08 -0.15 Pass STAP-1100 07/01/06 Sr-90 0.66 +/- 0.21 0.62 0.43 -0.81 Pass STAP-1100 07/01/06 U-233/4 0.15 +/- 0.02 0.13 0.09 -0.17 Pass STAP-1100 07/01/06 U-238 0.13 +/- 0.02 0.14 0.10 -0.18 Pass STAP-1100 e 07/01/06 Zn-65 < 0.07 0.00 Pass STAP-1101 07/01/06 Gr. Alpha 0.08 +/- 0.03 0.29 0.00 -0.58 Pass STAP-1101 07/01/06 Gr. Beta 0.41 +/- 0.05 0.36 0.18 -0.54 Pass STW-1102 07/01/06 Gr. Alpha 0.76 +/- 0.07 1.03 0.00 -2.07 Pass STW-1102 07/01/06 Gr. Beta 1.23 +/- 0.06 1.03 0.52 -1.54 Pass STW-1103 07/01/06 Am-241 1.86 +/- 0.09 2.31 1.62 -3.00 Pass STW-1103 07/01/06 Co-57 224.10 +/- 1.20 213.08 149.16 - 277.00 Pass STW-1103 07/01/06 Co-60 49.40 +/- 0.50 47.50 33.20 - 61.80 Pass STW-1103 07/01/06 Cs-134 112.70 +/- 0.90 112.82 78.97 - 146.66 Pass STW-1103 07/01/06 Cs-137 206.60 +/- 1.40 196.14 137.30 -254.98 Pass STW-1 103 07/01/06 Fe-55 138.40 +/- 5.40 165.40 115.80 - 215.00 Pass STW-1103 07/01/06 H-3 446.50 +/- 11.80 428.85 300.20 -557.50 Pass STW-1103e 07/01/06 Mn-54 < 0.30 0.00 Pass STW-1103 07/01/06 Ni-63 116.70 +/- 3.60 118.62 83.03 - 154.21 Pass STW-1103 07/01/06 Pu-238 1.27 +/- 0.07 1.39 0.97 -1.81 Pass STW-1103 07/01/06 Pu-239/40 1.67 +/- 0.08 1.94 1.36 -2.52 Pass STW-1103 07/01/06 Sr-90 16.40 +/- 1.90 15.69 10.98 -20.40 Pass STW-1103 07/01/06 Tc-99 29.40 +/- 1.10 27.15 19.00 -35.29 Pass STW-1103 07/01/06 U-233/4 1.97 +/- 0.08 2.15 1.50 -2.80 Pass STW-1103 07/01/06 U-238 1.97 +/- 0.08 2.22 1.55 -2.89 Pass STW-1103 07/01/06 Zn-65 192.50 +/- 2.40 176.37 123.46 -229.28 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the Department of Energy's Mixed Analyte Performance Evaluation Program, Idaho Operations office, Idaho Falls, Idaho b Results are reported in units of Bq/kg (soil), Bq/L (water) or Bq/total sample (filters, vegetation).

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

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

e Included in the MAPEP as a false positive.

f Difficulties with the analyses for transuranics isotopes in solid samples (Filters, Soil and vegetation),

were attributed to incomplete dissolution of the samples. Soil samples were repeated, results of reanalyses:

Pu-238, 53.1 +/- 5.3 bq/kg. Pu-239/240, 42.4 +/- 4.7 bq/kg. U-233/4, 33.3 +/- 3.5 bq/kg. U-238, 35.5 +/- 3.6 bq/kg.

g The July vegetation sample was provided in two separate geometries, (100 ml. and 500 ml.). Results reported here used the 500 ml. standard size geometry. Results for the 100 ml. geometry showed approximately a 15% higher bias.

A6-3

APPENDIX B DATA REPORTING CONVENTIONS B-1

I I 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)(xi +x2)ands = (1/2) *22 +s2 3.2. Individual results: <Li , <L2 Reported result: <L, where L = lower of Li and L2 fl 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 xi, x2 ... xn are defined as follows:

f =n >Ix s= n-4.2 Values below the highest lower limit of detection are not included in the average.

i 4.3 Ifall 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:

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

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

4.6 Composite samples which overlap the next month or year are reported for the month or year in which most of the sample is collected.

B

  • B-2

APPENDIX C TECHNICAL SPECIFICATION 2.1.3 REACTOR COOLANT DOSE EQUIVALENT IODINE ABOVE TECHNICAL SPECIFICATION LIMIT C-i

I I

IDuring the 2006 reporting period, radioactivity of primary coolant did not exceed the limits of Technical Specification 2.1.3.

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APPENDIX D SAMPLE LOCATION MAPS D-1

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11 U 112 1 SCALE IN MILES Sample locations within Site Boundary/Owner Controlled Area D-2

020 Sample locations within 5-mile Area D-3