ML071080303

Annual Radioactive Environmental Report for the Period of January 1, 2006 - December 31, 2006

ML071080303
Person / Time
Site:	Big Rock Point  File:Consumers Energy icon.png
Issue date:	04/11/2007
From:	Haas K Consumers Energy
To:	Document Control Desk, Office of Nuclear Reactor Regulation
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Download: ML071080303 (56)

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ConsunwsEnem A CMS Energy Company Big Rock Point Nuclear Plant Kurt M. Haas 10269 US-31 North General Manager Charlevoix, M1 49720 April 11, 2007 10 CFR 50, Appendix I, IV.B.2 10 CFR 50, Appendix I, IV.B.3 10 CFR 50, Appendix I, IV.C 10 CFR 50.36(b)

U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 DOCKETS 50-155 AND 72-043 - LICENSE DPR BIG ROCK POINT PLANT -

ANNUAL RADIOACTIVE ENVIRONMENTAL REPORT FOR THE PERIOD OF JANUARY 1, 2006 - DECEMBER 31, 2006 In accordance with the Big Rock Point Defueled Technical Specifications Section 6.6.2, attached (Attachment 1) is the Annual Radioactive Environmental Report for the period of January 1, 2006 to December 31, 2006. This report includes summaries, interpretations, and statistical evaluation of the results of the Radiological Environmental Monitoring Program for the reporting period. The material provided is consistent with the objectives outlined in the Offsite Dose Calculation Manual and Sections IV.B.2, IV.B.3, and IV.C Appendix 110 CFR 50 and 10 CFR 50.36(b).

Kurt M. Haas Site General Manager cc: Administrator, Region III, USNRC NRC Decommissioning Inspector, Big Rock Point NRC NMSS Project Manager - James Shepherd US Army Corp of Engineers - Detroit District ATTACHMENT

-.t ATTACHMENT 1 Big Rock Point Dockets 50-155 and 72-043 April 11, 2007 BIG ROCK POINT RADIOACTIVE ENVIRONMENTAL REPORT January 1, 2006 - December 31, 2006 54 pages

Big Rock Point Annual Radiological Environmental Operating Report January to December 2006 I. Introduction The 2006 Big Rock Point Annual Radiological Environmental Operating Report provides a summary and data interpretation of the Big Rock Point Radiological Environmental Monitoring Program (REMP) as conducted during the 2006 reporting period. Reporting requirements are detailed in the Big Rock Point Defueled Technical Specifications 6.7.2, and Offsite Dose Calculation Manual (ODCM)Section III, Subsection 2.0.

The Big Rock Point Nuclear Plant ceased power operations in August 1997.

During 2006 site decommissioning activities were completed. Activities included final removal of all underground structures and utilities, demobilization of all remaining site equipment, facilities and personnel. Open land areas were backfilled, contoured and seeded. The concluding site activity was the Final Status Survey which concluded that the former Big Rock Point Nuclear Plant met the radiological criteria for unrestricted use in accordance with 10 CFR 20.14021.

Big Rock Point's Defueled Technical Specifications no longer contain requirements for the REMP; rather, this program is now contained in the Big Rock Point ODCM Section II1. The radiological environmental monitoring sampling requirements are greatly reduced when compared to the plant's operating period. A land use census is no longer required for Big Rock Point.

Use of an assumed garden and milk animal at the site boundary in the downwind sector of highest D/Q, per ODCM Section II, Table 1.4, is conservative with respect to any actual garden and milk locations.

Tables 1, 2 and 3 provide a summary of 2006 BRP REMP sample requirements and results. Detailed sample station identification and location information can be found in Enclosure B. Well water, lake water intake/discharge, sediment, and fish samples were evaluated using data means comparisons against an appropriate control location (if available) and BRP ODCM limits. There are no remaining 2006 laboratory sample analyses pending completion for inclusion into this report.

1 Letter from the US NRC dated January 8, 2007, Release of land from Part 50 License for Unrestricted Use

Big Rock Point Annual Radiological Environmental Operating Report January to December 2006 The 2006 BRP ISFSI dry fuel storage facility environmental monitoring requirements pursuant to 10 CFR Part 72.44(d)(3) were submitted to the NRC in a letter dated February 2, 2007.

I1. Discussion and Interpretation of Results A. TLDs - Gamma Dose The Big Rock Point gamma dose assessment program consists of 13 TLD locations: four on-site TLDs (locations 1-ST, 14-G, 15-H, and 17-K), six site boundary TLDs (locations 9-A, 10-B, 11-C, 12-D, 13-F, 16-J), and three control TLDs, 10.5 to 50 miles out, (locations 5-PT, 6-BC, 7-TR).

Environmental gamma doses are measured quarterly and annually by placement of two TLD badges per designated location. Enclosure B provides a description and diagrams for TLD locations.

For 2006 the average quarterly gamma readings were:

12.4 millirem for the onsite TLDs; 11.9 millirem for the site boundary TLDs, and 15.6 millirem for the control TLD locations.

The average of the annual gamma readings in 2006 were:

46.6 millirem for the onsite TLDs, 43.8 millirem for the site boundary TLDs, and 56.2millirem for the control TLD locations.

The onsite quarterly TLD mean and the onsite annual TLD mean measured in 2006 are less than that of 2005; this is due to completion of plant decommissioning activities and the removal of the last remaining source term. Site boundary and offsite control TLDs are consistent with 2005 Annual Radiological Environmental Operating Report and historical data.

A statistical evaluation was completed comparing 2006 offsite control TLD data to site boundary TLD data. The site boundary TLD mean, although lower than the offsite control mean, is not statistically different than the offsite control TLD mean.

Each TLD badge contains a 4-zone CaSO 4 phosphor wafer (the wafer also includes an additional backup/reserve read-out zone). Sensitivity for the multi-zone TLDs are 1.0 millirem with a linear response to 1000 rem.

Big Rock Point Annual Radiological Environmental Operating Report January to December 2006 B. Air Samples The Big Rock Point Radiological Environmental Monitoring Program no longer requires airborne surveillance be conducted.

C. Milk The Big Rock Point Radiological Environmental Monitoring Program no longer requires milk samples be collected.

D. Lake Water The site did not withdraw any lake water during 2006 and no liquid batch releases occurred during the reporting period, no lake water samples were required.

Groundwater and surface water from site dewatering activities is detained for sediment control during decommissioning activities. Sampling of this water prior to release for gamma isotopes and tritium is performed as a precautionary measure. All composite water sample analyses were less than established minimum detectable activity levels for gamma isotopes.

Composite sample tritium value is 1729 pCi/L for the retention pond releases in 2006. Precautionary sampling of the detained water during release is consistent with the ODCM requirement for semiannual lake water sample collection near the site (see Enclosure A).

E. Well Water The BRP ODCM requires semiannual sampling of the site drinking water well with analysis for tritium and gamma isotopes. A final well water sample was collected in May, shortly there after the well was abandoned in accordance with State of Michigan Department of Environmental Quality requirements. The analyses did not detect any tritium or gamma isotopes in the well water sample.

F. Groundwater Monitoring Wells Big Rock Point ODCM requires semiannual sampling of six site groundwater monitoring wells, with analysis for tritium and gamma isotopes. Big Rock Point had up to 22 monitoring wells available for sampling. Nine original groundwater monitoring wells were installed in 1994; additional monitoring wells were installed in 2002 and 2003 for the purpose of groundwater characterization. All available wells were sampled on a quarterly basis; however, decommissioning activities conducted during 2006 did render some of the monitoring wells unavailable for sampling. Following required

Big Rock Point Annual Radiological Environmental Operating Report January to December 2006 sampling, all groundwater monitoring wells were abandoned in 2006 in accordance with the Big Rock Point License Termination Plan.

A total of 38 monitoring well samples were collected and analyzed in 2006.

All gamma isotopic results were less than detectable. Tritium was detected above the LLD in 10 of the samples at a mean of 1804 pCi/L. Historically MW-5 and MW-6 typically have shown the highest detectable tritium concentrations. The mean value for MW-5 and MW-6 is 1668 pCi/L, slightly lower than the 2005 corresponding mean value of 4850 pCi/L for the same well locations. All monitoring well samples collected in 2006 were below the reporting criteria of 20,000 pCi/L.

Each well water sample consists of a one-gallon grab sample. This sample is sent to Environmental Inc. Midwest Laboratory for analysis. No treatment of the water samples with a preservative is necessary.

G. Drinking Water Collection of drinking water samples, other than the plant's drinking water supply well (see Section E), is no longer required by the BRP Radiological Environmental Monitoring Program.

H. Crops The collection of food crops/vegetation samples is not required by the BRP Radiological Environmental Monitoring Program.

1. Sediment A total of six individual sediment samples were collected from four locations during 2006. Sediment samples locations are the lakeshore adjacent to the former discharge channel (1-ST), 1/4 mile south of discharge (24-STS), 1/4 mile north of discharge (25-STN), and the Ludington control station (26-LP, 115 miles SSW). The BRP ODCM requirement for sampling where clarified water enters the lake is met by sample collected adjacent to the former discharge location due to the proximity of these two locations (approximately 100 yard distance).

Evaluation of the sediment analytical results was based on data mean comparisons between the BRP samples and the Ludington control samples and the BRP ODCM reporting limits. Gross beta was detected in all six indicator samples with a mean value of 19.2 pCi/g. Cs-137 was detected in five indicator samples with a mean of 0.17 pCi/g. Co-60 was not detected in any of the indicator samples. Both Cs-137 and Co-60 levels continued to decrease during 2006, consistent with corresponding decommissioning

Big Rock Point Annual Radiological Environmental Operating Report January to December 2006 sediment analyses conducted in previous years (1997-2006). Neither Cs-137 nor Co-60 was detected in control samples.

No BRP ODCM reporting levels or action levels were exceeded during 2006.

Sediment samples are collected in one-liter quantities and obtained a few yards off-shore. No treatment of the samples with a preservative is necessary prior to shipment to Environmental Inc. Midwest Laboratory.

J. Fish The BRP Radiological Environmental Monitoring Program requires that either one fish or invertebrate (crayfish) sample is collected semi-annually at, the location where detained water enters the lake. Fish samples were collected from this location in June and September. Control samples were taken from the Ludington location. Radionuclide analyses results are listed in Table 2 for these samples. The September fish sample indicated the presence of Cs-1 37 at less than one-quarter of the required LLD. Gross beta, which originates primarily from naturally-occurring background radionuclides, is not required by the Big Rock Point ODCM for fish samples.

No BRP ODCM reporting levels were exceeded nor were any special or supplemental analyses required during 2006.

One liter quantities of frozen fish are sent to Environmental Inc. Midwest Laboratory for analysis.

K. Crayfish No crayfish samples were collected in 2006.

L. Aquatic Biota The collection/analysis of aquatic biota (algae and periphyton) is no longer required for the Big Rock Point Radiological Environmental Monitoring Program.

M. Broad Leaf Vegetation The collection/analysis of broad leaf vegetation is no longer required in the Big Rock Point Radiological Environmental Monitoring Program.

Big Rock Point Annual Radiological Environmental Operating Report January to December 2006 Ill. Assessment of Big Rock Point's Operational Environmental Impact Review and comparison of the 2006 Big Rock Point radiological environmental monitoring data to previous operational and pre-operational data continues to show that all trending parameters analyzed support the conclusion that operation and decommissioning activities at the former Big Rock Point Nuclear plant have had minimal environmental impact. Additionally, 2006 Big Rock Point environmental monitoring data was incorporated into the Final Status Survey Report which demonstrated that the site met the requirements of 10 CFR 20.1402, Radiological Criteria for Unrestricted Use.

Big Rock Point Annual Radiological Environmental Operating Report January to December 2006 Table 1. Sampling and Analysis Summary Number of Samples Frequency of Medium Description Location(s) Type of Analysis Collected Analysis TLD Continuous 1-ST, 5-PT, 6-BC, 7-TR, Gamma isotopic 49 Quarterly 9A-17K 11 Annual a Lake Water 1 gallon composite 1-ST Tritium, 0 Semiannual Gamma isotopic Well Water 1 gallon Site Well Tritium, 1 Semiannual grab/composite Gamma isotopic Monitoring Wells b 1 gallon grab MW 1-9 Tritium, 10 Semiannual Gamma isotopic Sediment Grab 1-ST, 24-STS, 25-STN, Gamma Isotopic 6 Semiannual 26-LP Fish c Grab 1-ST Discharge Gamma Isotopic 2 Semiannual Table Notes a Only quarterly TLD's are required per Big Rock Point ODCM b Tritium and gamma isotopic analysis for a minimum of 6 monitoring wells, semi-annually c BRP ODCM requires one fish or crayfish sample semiannually

Big Rock Point Annual Radiological Environmental Operating Report January to December 2006 Table 2. Sample Data Summar. a Medium or Pathway Analyses Evaluated Lower Limit All Indicator Locations All Control Locations Nonroutine Sampled Versus Total Number of Detection Mean c Mean ' Measure-(Units) Analyses Performed (LLD) b (Range) (Range) ments Direct Radiation:

TLD - Onsite TLD (quarterly) d 25/28 1.0 13/16 12.4 12/12 15.6 None (mR) (10.7-18.4) (11.1-22.8)

TLD (annual) 2/4 1.0 2/4 46.6 3/3 56.2 None (43.4-49.7) (41.6-78)

TLD - Site Boundary TLD (quarterly) d 36/36 1.0 24/24 11.9 12/12 15.6 None (mR) (9.4-14.7) (11.1-22.8)

TLD (annual) 9/9 1.0 6/6 43.8 3/3 56.2 None (38.2-52.6) (41.6-78)

Waterbome:

Lake Water Sample not (pCi/L) collected Well Water Tritium 1/1 500.0 0/1 LLD N/A N/A None (pCi/L)

Gamma Isotopic 1/1 15.0-30.0 0/1 LLD N/A N/A None Groundwater Tritium 38/38 500.0 10/38 1804 N/A N/A None Monitoring Wells (1095-3023)

(pCi/L)

Gamma Isotopic 38/38 15.0-30.0 0/38 LLD N/A N/A None Lake Sediment.

Sediment Gross Beta 6/6 1.0 6/6 19.2 1/1 LLD None (pCi/g dry) (10.8-26.3) 6/6 0.18 5/6 0.17 1/1 LLD None Cs-137 (0.03-0.30)

Big Rock Point Annual Radiological Environmental Operating Report January to December 2006 Table 2. Sample Data Summar. a Medium or Pathway Analyses Evaluated Lower Limit All Indicator Locations All Control Locations Nonroutine Sampled Versus Total Number of Detection Mean c Meanc Measure-(Units) Analyses Performed (LLD) b (Range) (Range) ments Biota:

Fish e Gamma Isotopic 2/2 0.15 1/2 0.032 2/2 LLD None (pCi/g wet) (Cs-137) NA Crayfish e Samples not (pCi/g wet) collected Table Notes:

a Values for sample locations with the greatest annual mean are provided in Table 3.

b Nominal LLD as defined in the Big Rock Point Offsite Dose Calculation Manual Section I, Table I.H-3 and vendor analytical capabilities.

c Mean and range data reported are based upon detectable measurements.

d Quarterly TLD results are normalized for 91 days net.

e Sample requirements are either one fish or invertebrate sample semiannually

Big Rock Point Annual Radiological Environmental Operating Report January to December 2006 Table 3. Reporting Results Greatest Mean Sampling Location Medium Type of Analysis Location Low Mean TLD - Onsite TLD (Quarterly) a 17-K 18.4 12.1 13.8 (mR) TLD (Annual) 17-K 49.7 TLD - Site Boundary TLD (Quarterly) a 12-E 12.7 14.6 13.9 (mR) TLD (Annual) 12-E 52.6 Lake Water No sample collected (pCi/L)

Well Water Tritium LLD (pCi/L) Gamma Isotopic LLD Groundwater Tritium MW-5 Near shoreline, North side 3023 2719 2891 Monitoring Wells Gamma Isotopic LLD (pCi/L)

Sediment Gross Beta 25-STN 22.56 20.08 21.32 (pCi/g dry) Cs-1 37 1-ST 0.30 0.03 0.16 Fish b Gamma Isotopic 1-ST 0.03 (pCi/g wet) (Cs-1 37)

Crayfish b No samples collected (pCi/g wet)

Table Notes a Quarterly TLD results are normalized for 91 days net.

b Sample requirements are either one fish or invertebrate sample semiannually

Enclosures A. Sample Collection Anomalies B. Big Rock Point Environmental Sample Schedule and Sample Location Maps C. Radiological Environmental Monitoring Program Data as provided by Environmental, Inc. Midwest laboratory, Northbrook, IL.

D. Environmental, Inc. Midwest laboratory EPA Interlaboratory Comparison Program Results E. Data Graphs

1. Mean Quarterly TLDs, Big Rock Point 1997-2006

2. Groundwater Monitoring Well Mean Tritium Concentration, Big Rock Point 1997-2006

3. Sediment Mean Gross Beta, Big Rock Point 1997-2006

4. Sediment Mean Total Gamma Activity, Big Rock Point 1997-2006

5. Fish & Crayfish Mean Total Gamma Activity, Big Rock Point 1997-2006

Big Rock Point Annual Radiological Environmental Operation Report January through December 2006 Enclosure A: Sample Collection Anomalies

Enclosure A Sample Collection Anomalies Sample TVpe Location Date Problem Evaluation Affected Description TLD BRP-01 3 rd Quarter Quarterly TLD lost during building TLD lost in removal/demolition; remaining field onsite TLD readings were utilized for analysis and were consistent with previous years data TLD BRP-01 3 rd Quarter Annual TLD Same as above lost in field 3 rd Quarter TLD lost during site restoration TLD BRP-14 Quarterly TLD lost in activities; remaining onsite TLD field readings were utilized for analysis and were consistent with previous years data TLD BRP-14 3 rd Quarter Annual TLD Same as above lost in field TLD BRP-01 4 th Quarter TLD not TLD was not placed in placed in designated field location after field loss of 3rd quarter TLD; remaining onsite TLD readings were utilized for analysis and were consistent with previous years data

Big Rock Point Annual Radiological Environmental Operation Report January through December 2006 Enclosure B: Big Rock Point Environmental Sample Schedule and Sample Location Maps

VOLUME 25 OFF-SITE DOSE CALCULATION MANUAL Revision 29 Page 19 of 63 AND RELATED DOCUMENTS A. OFF-SITE DOSE CALCULATION MANUAL SECTION I - PROCEDURAL AND SURVEILLANCE REQUIREMENTS TABLE 1-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM Number of Representative Samples and Sample Sampling and Type and frequency of Exposure Pathway and/or Collection Frequency Analysis Sample Locations a Quarterly Gamma dose

1. Direct Radiation b 21 monitoring stations either with two or more quarterly TLDs or one instrument for measuring and recording dose rate continuously, placed as follows d:

a) Miscellaneous site locations (4) b) A ring of stations (6) at or near the Site boundary c) Balance of stations (3) placed to serve as control stations d)*\ Outside perimeter of ISFSI (4) rgan fjonta lin a Wa

+ -+ A nrl I r- el

2. Waterborne

a. Lake 1 sample near site Semiannual (grab) Tritium and gamma isotopic d I sample from Site well, if in use, and Semiannual (grab) Tritium and gamma

b. Well (drinking) and groundwater 1 sample from minimum of 6 monitor wells Semiannual (grab) isotopic semiannually monitoring wells

3. Biota

a. Marine 1 fish or invertebrate sample where clarified, Semiannual (grab) Gamma Isotopic detained water enters lake Apr-Nov Semiannually

4. Lake Sediment

a. Shoreline 1 sample where clarified, detained water enters Semiannual (grab) Gamma Isotopic lake Apr-Nov Semiannually

b. Shoreline 1 sample each side of 4.a (above), within ~-1/2 mile Semiannual (grab) Gamma Isotopic Apr-Nov Semiannually 25-PartA.doc 02/09/06

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Big Rock Point Annual Radiological Environmental Operation Report January through December 2006 Enclosure C: Radiological Environmental Monitoring Program Data

... ""'vv... ... v ...

- *:'..- Environmental, Inc.

Midwest Laboratory an Allegheny Technologies Co.

700 Landwehr Road - Northbrook, IL 60062-2310 (847) 564-0700 fax (847) 564-4517 MONTHLY PROGRESS REPORT TO CONSUMERS ENERGY COMPANY JACKSON, MICHIGAN RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP)

FOR BIG ROCK NUCLEAR GENERATING PLANT PREPARED AND SUBMITTED BY ENVIRONMENTAL INCORPORATED MIDWEST LABORATORY Project Number: 8022 Reporting Period: January - December, 2006 Reviewed and Approved by _ Date 0(-26-2007 Distribution: Kenneth E. Pallagi (1 copy)

BIG ROCK TABLE OF CONTENTS Section List of Tables ......................................................................... III 1 INTRO DUCTIO N ..................................................................... iv

.2 LISTING OF MISSED SAMPLES ............................................ v Appendices A Interlaboratory Comparison Program Results ......................... A-1 B Data Reporting Conventions ......................... B-1 C Special Analyses ..................................................................... C-1 ii

BIG ROCK LIST OF TABLES No. Page

1. Gamma Radiation, as measured by TLDs, Quarterly Exposure. 1-1

2. Gamma Radiation, as measured by TLDs, Annual Exposure .... 2-1

3. Lake Water, Inlet and Discharge ...................... 3-1

4. W ater, Ludington Controls ........................................................... 4-1

5. W ell W ater .................................................................................... 5-1

6. Fish .................... .......................................................................... 6-1 7 Crayfish ....................................................................................... 7-1

8. Bottom Sedim ents ....................................................................... 8-1

9. Reactor Effluent Samples 9.1 Liquid Radwaste .......................................................................... 9.1-1 9.2 Stack Filters ................................................................................. 9.1-2 iii

BIG ROCK

1.0 INTRODUCTION

The following constitutes a final 2006 Progress Report for the Radiological Environmental Monitoring Program conducted at the Consumers Power Company, Big Rock Nuclear Generating Plant. Results of completed analyses are presented in the attached tables.

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

All samples were collected within the scheduled period unless noted otherwise in the Listing of Missed Samples.

iv

BIG ROCK 2.0 LISTING OF MISSED SAMPLES Expected Collection Sample Type Location Date Reason TLD BR-01 10 -03 TLD missing in field.

TLD BR-14 10O-06-03 TLD missing in field.

TLD (A) BR-01 01-04-07 TLD missing in field.

TLD (A) BR-14 01-04-07 TLD missing in field.

V

BIG ROCK Table 1. Gamma radiation, as measured by TLDs, quarterly exposure.

Units: mR/91 daysa 1st Qtr. 2nd Qtr. 3rd Qtr. 4th Qtr.

Date Placed 01-05-06 04-06-06 07-06-06 10-05-06 Date Removed 04-06-06 07-06-06 10-06-06 01-04-07 Intransit (mR) 1.3 +/- 0.3 5.0 +/- 0.3 1.8 +/- 0.3 3.2 +/- 0.3 BRP-01 (ST) (Onsite) 11.6 +/- 0.6 11.7 +/- 1.2 NDb 6.1 +/-0.4 BRP-05 (PT) (Control) 11.1 +/-0.4 11.6 +/-0.4 12.0 +/- 0.5 12.6 +/- 0.7 BRP-06 (BC) (Control) 14.1 +/- 0.4 13.4 +/- 0.8 14.4 +/- 0.5 15.0 +/- 0.6 BRP-07 (TR) (Control) 17.9 +/- 0.5 19.8 +/- 0.8 22.0 +/- 0.7 22.8 +/- 0.8 BRP-09 (Site Boundary) 11.1 +/-0.3 11.2 +/- 0.5 12.0 +/- 0.4 12.1 +/-0.5 BRP-10 (Site Boundary) 10.5 +/- 0.4 10.1 +/- 0.5 10.9 +/- 0.6 11.2 +/-0.5 BRP-1 1 (Site Boundary) 12.4 +/- 0.4 12.2 +/- 0.6 13.7 +/- 0.4 13.2 +/- 0.6 BRP-12 (Site Boundary) 12.7 +/- 0.6 13.6 +/- 1.0 14.7 +/- 0.4 14.6 +/- 0.7 BRP-13 (Site Boundary) 11.4 +/- 0.4 12.2 + 0.6 12.7 +/- 0.6 12.8 +/- 0.6 BRP-14 (G) (Onsite) 14.4 +/- 0.7 11.3 +/-0.8 NDb 11.7 +/- 0.6 BRP-15 (H) (Onsite) 11.3 +/- 0.5 11.1 +/-0.4 10.7 +/- 0.5 11.8 +/- 1.2 BRP-16 (J) (Site Boundary) 9.4 +/- 0.4 9.6 +/- 0.5 9.9 +/- 0.4 10.3 +/- 0.5 BRP-17 (K) (Onsite) 18.4 +/- 0.5 12.1 +/-0.4 12.1 +/- 0.4 12.5 +/- 1.1 BRP-18 (ISFSI-NW) 9.7 +/- 0.4 10.1 +/- 0.6 10.1 +/- 0.5 10.4 +/- 0.6 BRP-19 (ISFSI-SW) 12.2 +/- 0.5 13.2 +/- 0.7 13.8 +/- 0.5 13.9 +/- 0.8 BRP-20 (ISFSI-SE) 13.3 +/- 0.6 12.9 +/- 0.7 14.4 +/- 0.8 12.9 +/- 0.7 BRP-21 (ISFSI-NE) 10.1 +/- 0.5 10.5 +/- 0.4 10.8 +/- 0.5 10.4 +/- 0.4 BRP-22 (ISFSI-FNE) 15.7 +/- 0.4 15.7 +/- 0.6 16.5 +/- 0.8 17.1 +/- 0.9 BRP-23 (ISFSI-FSE) 33.5 +/- 1.2 33.9 +/- 1.1 33.6 +/- 1.3 34.5 +/- 1.0 BRP-24 (ISFSI-FSW) 18.1 +/- 0.7 19.2 +/- 0.5 18.6 +/- 0.6 19.9,+/- 0.5 BRP-25 (ISFSI-FNW) 15.7 +/- 0.5 15.8 +/- 0.4 15.8 +/- 0.5 16.4 +/- 0.4 a Intransit exposure has been subtracted.

b,,ND,, = No data; TLD missing in field.

TLD not placed in field.

1-1

BIG ROCK Table 2. Gamma radiation, as measured by TLDs, annual exposure.

Units: mR/365 daysa 2006 Date Placed 01-05-06 Date Removed 01-03-07 Intransit (mR) 2.0 +/- 0.8 BRP-01 (ST) (Onsite) NDb BRP-05 (PT) (Control) 41.6 +/- 1.2 BRP-06 (BC) (Control) 48.9 +/- 1.7 BRP-07 (TR) (Control) 78.0 +/- 1.4 BRP-09 (Site Boundary) 40.9 +/- 1.5 BRP-10 (Site Boundary) 38.9 +/- 1.0 BRP-1 1 (Site Boundary) 48.4 +/- 1.8 BRP-12 (Site Boundary) 52.6 +/- 1.6 BRP-13 (Site Boundary) 43.8 +/- 2.2 BRP-14 (G) (Onsite) NDb BRP-15 (H) (Onsite) 43.4 +/- 1.4 BRP-16 (J) (Site Boundary) 38.2 +/- 1.8 BRP-17 (K) (Onsite) 49.7 +/- 1.6 BRP-18 (ISFSI-NW) 37.4 +/- 1.6 BRP-19 (ISFSI-SW) 51.0 +2.1 BRP-20 (ISFSI-SE) 50.5 +/- 2.6 BRP-21 (ISFSI-NE) 37.5 +/- 1.1 BRP-22 (ISFSI-FNE) 55.6 +/- 3.3 BRP-23 (ISFSI-FSE) 132.9 +/- 5.4 BRP-24 (ISFSI-FSW) 68.8 +/- 1.9 BRP-25 (ISFSI-FNW) 55.3 +/- 0.8 Control 1 (Shield) 22.8 +/- 1.1 Control 2 (Shield) 23.0 +/- 0.9 a Intransit exposure has been subtracted.

b,"ND, = No data; TLD missing.

2-1

BIG ROCK Table 5.1 Well water, analyses for tritium and gamma emitting isotopes.

Collection: Semiannual Units: pCi/L Location Site Well Lab Code BRWW-3592 Date Collected 5/27/2006 Reg. LLD H-3 < 129 Mn-54 < 2.7 15 Fe-59 < 4.5 30 Co-58 < 1.5 15 Co-60 <2.0 15 Zn-65 <3.6 30 Zr-Nb-95 <2.3 15 Cs-134 <2.5 15 Cs-137 < 1.7 18 Ba-La-140 < 1.5 15 5.1-1

BIG ROCK Table 6. Fish, analyses for gross beta and gamma-emitting isotopes.

Collection: Semiannually Units: pCi/g wet Location Discharge Lab Code BRF-4066 BRF-6610 Date Collected 6/21/2006 9/25/2006 Req. LLD Sample Type Sucker Sucker Gross Beta 3.18 +/- 0.09 4.28 +/- 0.09 Mn-54 < 0.017 < 0.009 0.13 Fe-59 < 0.039 < 0.027 0.26 Co-58 < 0.018 < 0.015 0.13 Co-60 < 0.015 < 0.009 0.13 Zn-65 < 0.031 < 0.035 0.26 Zr-Nb-95 < 0.022 < 0.019 0.10 Cs-134 < 0.018 < 0.012 0.13 Cs-137 < 0.021 0.032 +/- 0.014 0.15 Location Ludington Pumped Storage Plant (Control)

Lab Code PAF-5334 PAF-5335 Date Collected 8/3/2006 8/3/2006 Req. LLD Sample Type Carp Perch Mn-54 < 0.021 < 0.011 0.13 Fe-59 < 0.029 < 0.017 0.26 Co-58 < 0.015 < 0.019 0.13 Co-60 < 0.015 < 0.022 0.13 Zn-65 < 0.054 < 0.044 0.26 Zr-Nb-95 < 0.013 < 0.033 0.10 Cs-1 34 < 0.013 < 0.021 0.13 Cs-1 37 < 0.025 < 0.028 0.15 6-1

BIG ROCK Table 8. Bottom sediment, analyses for gross beta and gamma-emitting isotopes.

Collection: Semiannually Units: pCi/g dry Location 1/4 Mile East 1/4 Mile West Lab Code BRBS-4069 BRBS-6608 BRBS-4068 BRBS-6609 Date Collected 6/5/2006 9/25/2006 6/5/2006 9/25/2006 Req. LLD Gross Beta 20.08 +/- 2.07 22.56 _ 2.32 19.60 +/- 1.83 10.75 _ 1.82 Mn-54 < 0.009 < 0.006 < 0.008 < 0.008 0.08 Fe-59 < 0.016 < 0.020 < 0.033 < 0.007 0.10 Co-58 < 0.006 < 0.008 < 0.010 < 0.010 0.08 Co-60 < 0.018 < 0.011 < 0.014 < 0.006 0.05 Zn-65 < 0.020 < 0.036 < 0.024 < 0.023 0.10 Zr-Nb-95 < 0.008 < 0.010 < 0.014 < 0.009 0.10 Cs-134 < 0.008 < 0.012 < 0.016 < 0.011 0.15 Cs-137 0.23 +/- 0.027, < 0.014 0.14 +/- Q.026 0.14 +/- 0.018 0.18 Location Discharge Ludington (Control)

Lab Code BRBS-4067 BRBS-6607 PABS-4480 Date Collected 6/5/2006 9/25/2006 6/16/2006 Req. LLD Gross Beta 26.30 +/- 2.26 15.90 +/- 2.28 Mn-54 < 0.007 < 0.005 < 0.014 0.08 Fe-59 < 0.020 < 0.020 < 0.025 0.10 Co-58 < 0.010 < 0.009 < 0.014 0.08 Co-60 < 0.026 < 0.007 < 0.012 0.05 Zn-65 < 0.019 < 0.014 < 0.042 0.10 Zr-Nb-95 < 0.008 < 0.010 < 0.031 0.10 Cs-1 34 < 0.011 < 0.009 < 0.017 0.15 Cs-137 0.30 +/- 0.023 0.03 +/- 0.016 < 0.016 0.18 8-1

BIG ROCK Table 9.2. Stack Filters, analyses for gross alpha, plutonium-239, strontium-89 and strontium-90.

Collection: Continuous, monthly exchange.

Units: pCi/filter Location Big Rock Date Collect( Lab Code Gross Alpha Sr-89 Sr-90 Pu-239 Required LLD 10 10 10 10 02-28-06 BRSP -1472 < 0.7 < 4.6 < 2.9 <0.1 9.2-1

Big Rock Point Annual Radiological Environmental Operation Report January through December 2006 Enclosure D: Interlaboratory Comparison Program Results

- Environmental, Inc.

Midwest Laboratory

/- an Allegheny Technologies Co.

700 Landwehr Road

• Northbrook, IL 60062-2310 ph. (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.

October, 2005 through September, 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 S 4,000 pCi/liter +/- lo = (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 Resultc Limits Acceptance STW-1 072 11/15/05 Sr-89 20.6 +/- 0.4 19.0 10.3 - 27.7 Pass STW-1 072 11/15/05 Sr-90 15.0 +/- 0.3 16.0 7.3 -24.7 Pass STW-1073 11/15/05 Ba-i 33 31.8 +/- 1.8 31.2 22.5 - 39.9 Pass STW-1 073 11/15/05 -Co-60 85.0 +/- 1.4 84.1 75.4 - 92.8 Pass STW-1 073 11/15/05 Cs-134 37.2 +/- 2.1 33.9 25.2 - 42.6 Pass STW-1 073 11/15/05 Cs-1 37 27.8 +/- 0.7 28.3 19.6 - 37.0 Pass 11/15/05 Zn-65 109.0 +/- 1.0 105.0 86.8 - 123.0 Pass STW-1 073 STW-1074 11/15/05 Gr. Alpha 41.1 +/- 1.2 23.3 13.2 -33.4 Fail 11/15/05 Gr. Beta 42.7 +/- 0.5 39.1 30.4 - 47.8 Pass STW-1 074 11/15/05 1-131 20.5 +/- 0.6 17.4 12.2 - 22.6 Pass STW-1 075 STW-1 076 11/15/05 Ra-226 7.8 +/- 0.6 8.3 6.2 - 10.5 Pass STW-1076 e 11/15/05 Ra-228 5.5 +/- 0.6 3.5 2.0 - 5.0 Fail 11/15/05 Uranium 15.5 +/- 0.3 16.1 10.9 -21.3. Pass STW-1 076 STW-1 077 11/15/05 H-3 12500.0 +/- 238.0 12200.0 10100.0 - 14300.0 Pass 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-1 078 01/16/06 Ba-133 86.5 +/- 4.1 95.0 78.6 -111.0 Pass STW-1079 Co-60 96.3 +/- 4.1 95.3 86.6 - 104.0 Pass STW-1 079 01/16/06 01/16/06 Cs-134 22.6 +/- 3.0 23.1 14.4 -131.8 Pass STW-1 079 01/16/06 Cs-137 109.0 +/- 5.9 111.0 101.0 -121.0 Pass STW-1 079 01/16/06 Zn-65 198.0 +/- 11.2 192.0 159.0 m225.0 Pass STW-1 079 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-1 080 01/16/06 Ra-226 4.3 +/- 0.4 4.6 3.4 - 5.8 Pass STW-1 081 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-1 081 04/10/06 Sr-89 29.0 +/- 1.8 32.4 23.7 -41.1 Pass STW-1088 04/10/06 Sr-90 8.7 +/- 1.0 9.0 0.3 - 17.7 Pass STW-1 088 Ba-133 10.3 +/- 0.4 10.0 1.3 - 18.7 Pass STW-1 089 04/10/06 04/10/06 Co-60 114.0 +/- 2.8 113.0 103.0 - 123.0 Pass STW-1089 04/10/06 Cs-134 41.9 +/- 1.4 43.4 34.7 -52.1 Pass STW-1089 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-1 089 Gr. Alpha 13.4 +/- 1.1 21.3 12.1 -30.5 Pass STW-1090 04/10/06 Gr. Beta 27.7 +/- 2.1 23.0 14.3 -31.7 Pass STW-1 090 04/10/06 04/10/06 1-131 22.0 +/- 0.3 19.1 13.9 -24.3 Pass STW-1091 H-3 7960.0 +/- 57.0 8130.0 6720.0 - 9540.0 Pass STW-1 092 04/10/06 04/10/06 Ra-226 2.9 +/- 0.4 3.0 2.2 - 3.8 Pass STW-1 092 04/10/06 Ra-228 20.9 +/- 1.2 19.1 10.8 -27.4 Pass STW-1 092 04/10/06 Uranium 68.6 +/- 3.4 69.1 57.1 -81.1 Pass STW-1 092 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 Acceptance STW-1094 07/09/02 Sr-89 15.9 +/-0.7 19.7 11.0 -28.4 Pass STW-1 094 07/09/02 Sr-90 24.3 +/- 0.4 25.9 17.2 - 34.6 Pass STW-1 095 07/09/02 Ba-1 33 94.9 +/- 8.9 88.1 72.9 - 103.0 Pass STW-1 095 07/09/02 Co-60 104.0 +/- 1.8 99.7 91.0 -108.0 Pass STW-1 095 07/09/02 Cs-134 48.7 +/- 1.3 54.1 45.4 -62.8 Pass STW-1095' 07/09/02 Cs-1 37 236.0 +/- 3.0 238.0 217.0 - 259.0 Pass STW-1095 07/09/02 Zn-65 126.0 +/- 8.0 121.0 100.0 - 142.0 Pass STW-1 096 07/09/02 Gr. Alpha 10.9 +/- 1.0 10.0 1.3 -18.6 Pass STW-1 096 07/09/02 Gr. Beta 9.7 +/- 0.4 8.9 0.2 - 17.5 Pass STW-1097 .07/09/02 Ra-226 11.0 +/- 0.5 10.7 7.9 -13.5 Pass STW-1097 07/09/02 Ra-228 12.2 +/- 0.8 10.7 6.1 - 15.3 Pass STW-1 097 07/09/02 Uranium 43.4 +/- 0.1 40:3 33.3 -47.3 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.

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

d The original samples were calculated using an Am-241 efficiency. The samples were spiked with Th-232. Samples were recounted and calculated using the Th-232 efficiency. Results of the recount: 27.01 +/- 2.35 pCi/L.

e Decay of short-lived radium daughters contributed to a higher counting rate. Delay of counting for 100 minutes provided better results.

The reported result was the average of the first cycle of 100 minutes, the average of the second cycle counts was 4.01 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.

Environmental, Inc.

2005-2 9/12/2005 30 cm 54.84 59.30 +/- 2.66 38.39 -71.29 Pass 2005-2 9/12/2005 60 cm 13.71 17.55 +/- 1.30 9.60 -17.82 Pass 2005-2 9/12/2005 75 cm 8.77 8.24 +/- 0.38 6.14-11.40 Pass 2005-2 9/12/2005 90 cm 6.09 5.94 +/- 0.49 4.26 -7.92 Pass 2005-2 9/12/2005 90 cm 6.09 5.93 +/- 0.37 4.26 -7.92 Pass 2005-2 9/12/2005 120 cm 3.43 3.42 +/- 0.18 2.40 -4.46 Pass 2005-2 9/12/2005 150 cm 2.19 1.71 +/- 0.14 1.53 -2.85 Pass 2005-2 9/12/2005 150 cm 2.19 1.87 +/- 0.27 1.53 -2.85 Pass 2005-2 9/12/2005 180 cm 1.52 1.58 +/- 0.99 1.06 -1.98 Pass 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 A2-1

TABLE A-3. In-House "Spike" Samples Concentration (pCi/L)a Lab Code b Date Analysis Laboratory results Known Control 2s, n=1 c Activity Limits d Acceptance SPW-6019 10/24/2005 Tc-99 547.99 +/- 6.69 539.22 377.45 - 700.99 Pass SPF-6293 11/4/2005 Cs-1 34 941.30 +/- 44.10 886.00 797.40 - 974.60 Pass SPF-6293 11/4/2005 Cs-137 2570.40 +/- 105.30* 2400.00 2160.00 -2640.00 Pass SPAP-6309 11/7/2005 Cs-134 41.24 +/- 1.91 44.03 34.03 - 54.03 Pass SPAP-6309 11/7/2005 Cs-137 114.03 +/- 5.01 120.24 108.22 - 132.26 Pass SPAP-631 1 11/7/2005 Gr. Beta 505.60 +/-+7.36 455.00. 364.00 - 637.00 Pass SPW-6451 11/10/2005 H-3 77126.00 +/- 747.00 76749.00 61399.20 -92098.80 Pass W-120105 12/1/2005 Gr. Alpha 25.16 +/- 0.45 20.08 10.04 -30.12 Pass W-120105 12/1/2005 Gr. Beta 74.58 +/- 0.81 65.73 55.73 - 75.73 Pass SPW-7440 12/30/2005 Cs-134 42.67 +/- 4.22 42.03 32.03 - 52.03 Pass SPW-7440 12/30/2005 Cs-137 61.19 +/- 7.20 59.91 49.91 - 69.91 Pass SPMI-7442 12/31/2005 Cs-134 40.41 +/- 5.66 42.03 32.03 - 52.03 Pass SPMI-7442 12/31/2005 Cs-137 60.05 +/- 7.80 59.91 49.91 - 69.91 Pass SPW-301 1/20/2006 Fe-55 2700.10 +/- 70.00 2502.50 2002.00 - 3003.00 Pass SPAP-1224 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 SPW-1 228 3/7/2006 H-3 70891.00 +/- 719.00 75394.00 60315.20 -90472.80 Pass SPW-1230 3/7/2006 Cs-134 38.58 +/- 2.10 39.51 29.51 - 49.51 Pass SPW-1230 3/7/2006 Cs-137 59.44 +/- 4.51 59.65 49.65 - 69.65 Pass SPM1-1232 3/7/2006 Cs-134 41.20 +/- 1.33 39.51 29.51 - 49.51 Pass SPM1-1232 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-134 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-1 37 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 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-3988 6/16/2006 Cs-1 34 35.56 +/- 1.40 36.00 26.00 - 46.00 Pass SPW-3988 6/16/2006 Cs-1 37 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-137 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-137 116.62 +/- 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 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-134 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 3

Liquid sample results are reported in pCi/Liter, air filters( pCi/filter), charcoal (pCi/r ), 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).

CResults 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 LLD Activityc Criteria (4.66 cy)

SPW-6020 water 10/24/2005 Tc-99 4.81 -1.75 +/- 2.90 10 SPF-6294 Fish 11/4/2005 Cs-1 34 18.60 100 SPF-6294 Fish 11/4/2005 Cs-1 37 12.99 100 SPAP-6310 Air Filter 11/7/2005 Cs-1 34 3.23 100 SPAP-6310 Air Filter 11/7/2005 Cs-137 3.86 100 SPAP-6312 Air Filter 11/7/2005 Gr. Beta 1.22 -0.64 +/- 0.64 3.2 water 12/1/2005 Gr. Alpha 0.05 0.033 +/- 0.04 1 W-120105 W-120105 water 12/1/2005 Gr. Beta 0.15 -0.043 +/- 0.11 3.2 SPMI-7419 Milk 12/22/2005 Co-60 7.24 10 SPMI-7419 Milk 12/22/2005 Cs-137 5.61 10 SPMI-7419 Milk 12/22/2005 1-131(G) 10.96 20 SPW-7421 water 12/22/2005 Co-60 2.43 10 SPW-7421 water 12/22/2005 Cs-137 3.12 10 SPW-7441 water 12/30/2005 Cs-134 4.25 10 SPW-7441 water 12/30/2005 Cs-1 37 1.63 10 SPMI-7443 Milk 12/30/2005 Cs-134 4.74 10 SPMI-7443 Milk 12/30/2005 Cs-137 8.53 10 SPW-302 water 1/20/2006 Fe-55 1061.00 -91 +/- 637.30 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-1 34 2.71 10 SPW-1231 water 3/7/2006 Cs-137 2.05 10 w-30906 water 3/9/2006 Gr. Alpha 0.04 0.005 +/- 0.03 1 w-30906 water 3/9/2006 Gr. Beta 0.08 -0.016 +/- 0.05 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 +/- 86.90 200 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 0.02 100 SPF-3154 Fish 5/10/2006 Cs-137 0.01 100 SPW-3461 water 5/26/2006 C-1 4 10.20 -7.9 +/- 5.20 200 w-60606 water 6/6/2006 Gr. Alpha 0.05 0.013 +/- 0.04 1 w-60606 water 6/6/2006 Gr. Beta 0.16 -0.044 +/- 0.11 3.2 SPW-3989 water 6/16/2006 Cs-1 34 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 A4-1

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

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 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 SPAP-6949 Air Filter 9/30/2006 Cs-1 34 0.89 100 SPAP-6949 Air Filter 9/30/2006 Cs-1 37 0.91 100 spap-6952 Air Filter .9/30/2006 Gr. Beta -0.002 +/- 0.00 3.2 spW-6953 water 9/30/2006 Cs-134 3.91 10 spW-6953 water 9/30/2006 Cs-137 5.61 10 SPMI-6955 Milk 9/30/2006 Cs-134 2.86 10 SPMI-6955 Milk 9/30/2006 Cs-137 2.39 10 SPMI-6955 Milk 9/30/2006 1-131 9.98 0.5 a Liquid sample results are reported in pCi/Liter, air filters( pCi/filter), charcoal (pCi/charcoal canister), and solid samples (pCi/g).

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 G-5526,5527 10/3/2005 Be-7 4.03 +/- 0.62 4.07 +/- 0.80 4.05 +/- 0.51 Pass G-5526,5527 10/3/2005 Gr. Beta 8.10 +/- 0.30 8.80 +/- 0.40 8.41 +/- 0.24 Pass G-5526,5527 10/3/2005 K-40 4.93 +/- 0.67 6.00 +/- 0.72 5.47 +/- 0.49 Pass CF-5547, 5548 10/5/2005 K-40 15.40 +/- 0.73 15.63 +/- 0.92 15.51 +/- 0.59 Pass DW-5583, 5584 10/5/2005 H-3 205.00 +/- 83.00 243.00 +/- 85.00 224.00 +/- 59.40 Pass VE-5721, 5722 10/10/2005 Gr. Alpha 0.07 +/- 0.05 0.08 +/- 0.06 0.08 +/- 0.04 Pass VE-5721, 5722 10/10/2005 Gr. Beta 5.09 +/- 0.15 5.00 +/- 0.16 5ý05 +/- 0.11 Pass VE-5721, 5722 10/10/2005 K-40 4.27 +/- 0.43 4.20 +/- 0.34 4.23 +/- 0.27 Pass CF-5695, 5696 10/11/2005 Be-7 2.70 +/- 0.37 2.80 +/- 0.34 2.75 +/- 0.25 Pass CF-5695, 5696 10/11/2005 K-40 11.79 +/- 0.86 13.11 +/- 0.68 12.45 +/- 0.55 Pass LW-6129, 6130 10/11/2005 Gr. Beta 1.34 +/- 0.25 1.85 +/- 0.29 1.59++/- 0.19 Pass LW-6129, 6130 10/11/2005 H-3 304.35 +/- 95.31 369.23 +/- 97.88 336.79 +/- 68.31 Pass DW-50844, 5 10/11/2005 Gr. Beta 5.30 +/- 1.50 4.20 +/- 1.40 4.75 +/- 1.03 Pass LW-5748, 5749 b 10/12/2005 Gr. Beta 1.09 +/- 0.25 1.89 +/- 0.28 1.49 +/- 0.19 Fail AP-6485, 6486 10/20/2005 Be-7 0.10 +/- 0.03 0.09 +/- 0.03 0.09 +/- 0.02 Pass SWU-6156, 6157 10/25/2005 Gr. Beta 4.69 +/- 1.34 4.18 +/- 1.34 4.44 +/- 0.95 Pass VE-6186, 6187 10/26/2005 K-40 2.90 +/- 0.49 2.83 +/- 0.51 2.87 +/- 0.35 Pass LW-6203, 6204 10 27/2005 .Gr. Beta 2.92 +/- 0.62 3.09 +/- 0.66 3.01 +/- 0.45 Pass SO-6270, 6271 10/28/2005 Cs-1 37 0.33 +/- 0.03 0.34 +/- 0.04 0.33 +/- 0.03 Pass SO-6270, 6271 10/28/2005 Gr. Beta 26.85 +/- 2.78 22.25 +/- 2.41 24.55 +/- 1.84 Pass SO-6270, 6271 10/28/2005 K-40 13.67 +/- 0.74 14.02 +/- 0.76 .13.85 +/- 0.53 Pass TD-6320, 6321 11/1/2005 H-3 444202 +/- 1770 446633 +/- 1775 445418 +/- 1253 Pass SO-6605, 6606 11/11/2005 Gr. Beta 18.22 +/- 2.23 18.47 +/- 2.22 18.35 +/- 1.57 Pass CF-6509, 6510 11/14/2005 K-40 0.85 +/- 0.14 0.99 +/- 0.22 0.92 +/- 0.13 Pass SW-6638, 6639 11/22/2005 1-131 0.95 +/- 0.35 0.67 +/- 0.31 0.81 +/- 0.23 Pass SO-6887,6888 11/22/2005 Gr. Alpha 6.80 +/- 2.92 10.27 +/- 3.26 8.53 +/- 2.19 Pass SO-6887, 6888 11/22/2005 Gr. Beta 19.27 +/- 2.16 18.43 +/- 2.21 18.85 +/- 1.54 Pass SO-6887, 6888 11/22/2005 K-40 14.29 +/- 1.11 13.78 +/- 0.78 14.03 +/- 0.68 Pass SWT-6721, 6722 11/29/2005 Gr. Beta 0.98 +/- 0.31 0.87 +/- 0.31 0.93 +/- 0.22 Pass VE-6775, 6776 11/29/2005 Gr. Beta 12.75 +/- 0.28 13.16 +/- 0.21 12.96 +/- 0.18 Pass LW-6743, 6744 11/30/2005 Gr. Beta 3.19 +/- 0.47 2.50 +/- 0.44 2.85 +/- 0.32 Pass DW-51023, 4 12/2/2005 Gr. Alpha 0.55 +/- 1.40 2.21 +/- 1.31 1.38 +/- 0.96 Pass F-7076, 7077 12/14/2005 Gr. Beta 2.63 +/- 0.28 2.38 +/- 0.25 2.50 +/- 0.19 Pass F-7076, 7077 12/14/2005 K-40 1.75 +/- 0.44 1.61 +/- 0.31 1.68 +/- 0.27 Pass MI-7097, 7098 12/14/2005 K-40 1298.10 +/- 113.10 1346.00 +/- 101.40 1322.05 +/- 75.95 Pass MI-7097, 7098 12/14/2005 Sr-90 0.43 +/- 0.36 0.78 +/- 0.38 0.61 +/- 0.26 Pass WW-7187, 7188 12/14/2005 Gr. Beta 1.16 +/- 0.60 2.03 +/- 0.72 1.60 +/- 0.47 Pass SWT-7282, 7283 12/27/2005 Gr. Beta 1.62 +/- 0.37 1.85 +/- 0.38 1.74 +/- 0.27 Pass 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 +/- 102.80 131.1.90 +/- 67.58 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-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, 3312 c 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-1 357, 1358 3/10/2006 K-40 2.46 +/- 0.32 2.32 +/- 0.44 2.39 +/- 0.27 Pass 1396.30 +/- 120.80 1335.60 +/- 113.80 1365.95 +/- 82.98 Pass

. MI-1469,1470 3/14/2006 K-40 3/21/2006 K-40 13.66 +/- 0.81 13.97 +/- 0.68 13.81 +/- 0.53 Pass CF-1538, 1539 Gr. Beta 7.66 +/- 0.73 8.87 +/- 0.75 8.26 +/- 0.52 Pass WW-1583,1584 3/22/2006 DW-1955,1956 .3/27/2006 Gr. Beta 2.25 +/- 0.60 3.15 +/- 0.59 2.70 +/- 0.42 Pass M1-1760,1761 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-1 997, 1998 4/3/2006 Gr. Beta 1.82 +/- 0.07 1.87 +/- 0.07 1.85 +/- 0.05 Pass 4/3/2006 K-40 1.28 +/- 0.15 1.24 +/- 0.21 1.26 +/- 0.13 Pass E-1997, 1998 4/3/2006 Be-7 0.06 +/- 0.01 0.06 +/- 0.01 0.06 +/- 0.01 Pass AP-2818, 2819 4/3/2006 Gr. Beta 3.20 +/- 1.26 4.77 +/- 1.30 3.99 +/- 0.91 Pass SWU-2863, 2864 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 4/21/2006 1-131 0.74 +/- 0.23 0.53 +/- 0.40 0.63 +/- 0.23 Pass dw-2773, 2774 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 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 BS-3103, 3104 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 MI-3037, 3038 5/9/2006 K-40 1032.30 +/- 91.12 1103.60 +/- 120.50 1067.95 +/- 75.54 Pass MI-3124, 3125 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 SW-3145, 3146 5/10/2006 K-40 1412.40 +/- 119.10 1427.90 +/- 127.70 1420.15 +/- 87.31 Pass MI-3236, 3237 A5-2

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance 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-1 37 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 Be47 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 DW-60502, 60503 7/19/2006 Gr. Alpha 16.27 +/- 2.49 21.41 +/- 3.21 18.84 +/- 2.03 Pas~s 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 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-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 Be-7 0.10 +/- 0.03 0.16 +/- 0.03 0.13 +/- 0.02 Pass SL-5265, 5266 8/1/2006 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 8/1/2006 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 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 DW-60695, 606969/11/2006 Gr. Alpha 3.93 +/- 1.17 4.62 +/- 1.12 4.28 +/- 0.81 Pass DW-60715, 60716 9/19/2006 Gr. Alpha 1.30 +/- 1.00 2.23 +/- 1.01 1.77 +/- 0.71 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 Recount of W-5748, 2.38 +/- 0.85 pCi/L Averaged result; 2.14 +/- 0.45 pCi/L c 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-1 082 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 01/01/06 Cs-134 0.20 +/- 0.20 0.00 0.00 - 0.50 Pass STVE-1082 01/01/06 Cs-1 37 3.40 +/- 0.20 3.07 2.15 -4.00 Pass STVE-1082 01/01/06 Mn-54 6.90 +/- 0.20 6.25 4.37 -8.12 Pass STVE-1082 01/01/06 Sr-90 1.40 +/- 0.20 1.56 1.09- 2.03 Pass STVE-1082 01/01/06 Zn-65 11.10 +/- 0.50 9.80 6.86 - 12.74 Pass STSO-1083 01/01/06 Co-57 762.90 +/- 12.70 656.29 459.40- 853.18 Pass STSO-1 083 01/01/06 Co-60 504.90 +/- 3.10 447.10 312.97 -581.23 Pass STSO-1 083e 01/01/06 Cs-134 0.00 +/- 0.00 0.00 0.00 -0.00 Pass STSO-1 083 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 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 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 -ý2.84 Pass STAP-1 085 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-1 085 01/01/06 Sr-90 0.77 +/- 0.21 0.79 0.55 - 1.03 Pass STAP-1085 01/01/06 Zn-65 3.94 +/- 0.44 3.42 2.40 - 4.45 Pass 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-1 086 01/01/06 .Co-60 158.30 +/- 1.00 153.50 107.45 -199.55 Pass STW-1 086 01/01/06 Cs-1 34 96.40 +/- 1.50 95.10 66.57 -123.63 Pass STW-1086e 01/01/06 Cs-1 37 0.00 +/- 0.00 0.00 0.00 -0.00 Pass STW-1 086 01/01/06 Fe-55 102.50 +/- 18.10 129.60 90.72 -168.48 Pass STW-1 086 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 01/01/06 Ni-63 62.90 +/- 3.60 60.34 42.24 -78.44 Pass STW-1 086 STW-1 086. 01/01/06 Pu-238 0.96 +/- 0.07 0.91 0.70 -1.30 Pass STW-1 086e 01/01/06 Pu-239/40 0.00 +/- 0.00 0.01 0.00 -0.00 Pass STW-1 086 01/01/06 Sr-90 12.80 +/- 1.60 13.16 9.21 -17.11 Pass STW-1 086 01/01/06 Tc-99 22.30 +/- 1.20 23.38 16.37 -30.39 Pass STW-1 086 01/01/06 U-233/4 2.02 +/- 0.12 2.09 1.46 -2.72 Pass 01/01/06 U-238 2.03 +/- 0.12 2.17 1.52 -2.82 Pass STW-1 086 STW-1 086 01/01/06 Zn-65 249.50 +/- 3.40 228.16 159.71 -296.61 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-1087 01/01/06 Gr. Alpha 0.59 +/- 0.10 0.58 0.00 -1.16 Pass STW-1087 01/01/06 Gr. Beta 1.69 +/- 0.07 1.13 0.56 - 1.70 Pass 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) as requested by the 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.

A6-2

APPENDIX B DATA REPORTING CONVENTIONS B-1

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

2.0. Single Measurements x s Each single measurement is reported as follows:

where: x = value of the measurement; s = 2s counting uncertainty (corresponding to the 95% confidence level).

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

where L = the lower limit of detection based on 4.66s uncertainty 3.0. Duplicate analyses 3.1 Individual results: For two analysis results; xi - sl and X2 +/- s2 Reported result: x+/-s; where x= (112)(xl +x2)ands= (1/2) s +S 2 3.2. Individual results: <L1, <L2 Reported result: <L, where L = lower of Li and L2 x +/- s, <L Reported result: x + s if x >L; <L otherwise.

3.3. Individual results:

4.0. Compiutation of Averages and Standard Deviations are computed from all of the individual measurements 4.1 Averages and standard deviations listed in the tables standard deviation would not be the average of quarterly over the period averaged; for example, an annual of n numbers x1 , x 2 . . . xn are standard deviations. The average x and standard deviation s of a set defined as follows:

x 2___

-~x n 1s=

not included in the average.

4.2 Values below the highest lower limit of detection are highest LLD, the highest LLD is reported.

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

4.5 In rounding off, the following rules are followed:

than 5, the number is dropped, and the retained 4.5.1. If the number following those to be retained is less 11.443 is rounded off to 11.44.

number s are kept unchanged. As an example, to or greater than 5, the number is dropped and 4.5.2. If the number following those to be retained is equal 11.445 is rounded off to 11.45.

the last retained number is raised by 1. As an example, B-2

Big Rock Point Annual Radiological Environmental Operation Report January through December 2006 Enclosure E: Data Graphs

Mean Quarterly TLDs Big Rock Point 1997 - 2006 LI Site Boundary 9 Offsite El Control1 14.0 12.0 10.0 8.0 6.0 E

4.0 2.0 0.0 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006

'ear Note: Offsite TLDs eliminated in 1999.

Groundwater Monitoring Well Mean Trituim Concentration Big Rock Point 1997 - 2006 3.0E+04 2.5E+04 2.OE+04 E- 0.5E+04 1.OE+04 5.OE+03 O.OE+00 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 Note: Mean is calculated for wells with detectable H-3 Year

Sediment Mean Gross Beta Big Rock Point 1997 - 2006 EI BRP Site Discharge f Control Sediment 25.0 20.0 0) 0 15.0 10.0

• 6-I C.) 5.0 uc~:

0.0 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 Year

Sediment Mean Total Gamma Activity Big Rock Point 1997-2006 El BRP Sediment 1 Control Sediment 2.50 2.00 U

0.

1.50 1.00 0.50 0.00 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 Year Notes:

1. Zero values for control location were below detectable concentration.

2. Total gamma activity is sum of Cs-137, Mn-54 and Co-60 means.

Fish & Crayfish Mean Total Gamma Activity Big Rock Point 1997 - 2005 EL Fish U Fish Control El Crayfish 0.06 2.5 0.05 2.0

• p0.04 1.5 .-

1.0 -

0.02 0.01 0.5 0 0.0 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 Year Notes:

1. Total gamma activity is sum of Cs-137, Mn-54 and Co-60 means

2. Fish indicator and control samples int 2002 showed no detectable gamma isotopes.

3. Crayfish samples not collected in 2002 to 2004; fish samples not collected in 1999 to 2001