ML12121A547

Grand Gulf, Unit 1, 2011 Annual Radiological Environmental Operating Report (AREOR)

ML12121A547
Person / Time
Site:	Grand Gulf
Issue date:	04/30/2012
From:	Perino C L Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GNRO-2012/00034
Download: ML12121A547 (69)

Text

,.,-pEnlergy GNRO-2012/00034 April 30, 2012 U.S.Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C.20555 Entergy Operations, Inc.P.O.Box 756 Port Gibson, Mississippi 39150 Tel: 601-437-2800 Christina L.Perino Manager, Licensing

Subject:

Grand Gulf Nuclear Station (GGNS)2011 Annual Radiological Environmental Operating Report (AREOR)Grand Gulf Nuclear Station (GGNS), Unit 1 Docket No.50-416 License No.NPF-29

Dear Sir or Madam:

In accordance with the Grand Gulf Nuclear Station Unit 1 Technical Specification 5.6.2, attached is the Annual Radiological Environmental Operating Report for the period January 1, 2011 through December 31, 2011.This letter does not contain any commitments.

If you have questions or require additional information concerning this report, please contact Charles Nash at (601)437-6936 or Christina Perino at (601)437-6299.

Ccfflq CLP\rrj

Attachment:

cc: 2011 Annual Radiological Environmental Operating Report (See Next Page)

GNRO-2012/00034 Page 2 of 2 cc: NRC Senior Resident Inspector Grand Gulf Nuclear Station Port Gibson, MS 39150 U.S.Nuclear Regulatory Commission ATTN: Mr.Elmo E.Collins, Jr.Region Administrator, Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 U.S.Nuclear Regulatory Commission ATTN: Mr.Alan Wang, NRR/DORL Mail Stop OWFN/8 B1 Washington, DC 20555-0001 Mr.B.J.Smith Director, Division of Radiological Health Mississippi State Department of Health Division of Radiological Health 3150 Lawson Street Jackson, MS 39213 Dr.Mary Currier, M.D., M.P.H Mississippi Department of Health P.O.Box 1700 Jackson, MS 39215-1700 Attachment to GNRO-2012/00034 2011 Annual Radiological Environmental Operating Report ENTERGY OPERATIONS, INC.GRAND GULF NUCLEAR STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT January 1, 2011-December 31,2011 Prepared By Reviewed By Approved By TABLE OF CONTENTS

1.0 INTRODUCTION

1.1 Radiological

Environmental Monitoring Program 1.2 Pathways Monitored 1.3 Land Use Census 2.0 INTERPRETATION AND TRENDS OF RESULTS 2.1 Air Particulate and Radioiodine Sample Results 2.2 Thermoluminescent Dosimetry(TLD)

Sample Results 2.3 Water Sample Results 2.4 Sediment Sample Results 2.5 Milk Sample Results 2.6 Fish Sample Results 2.7 Food Product Sample Results 2.8 Land Use Census Resuls 2.9 Interlaboratory Comparison Results 3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

3.1 Program Results Summary 2 6 11 11 11 12 24 24 24 25 26 26 26 26 27 33 34 34 TABLE 1.1 TABLE 2.1 TABLE 3.1 LIST OF TABLES RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM LAND USE CENSUS RESULTS RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

3 13 28 35 FIGURE 1-1 FIGURE 1-2 FIGURE 1-3 FIGURE 2-1 LIST OF FIGURES EXPOSURE PATHWAYS SAMPLE COLLECTION SITES-NEAR FIELD SAMPLE COLLECTION SITES-FAR FIELD TLD READINGS 4 21 22 23 25 ATTACHMENT 1 LIST OF ATTACHMENTS RADIOLOGICAL MONITORING REPORT

SUMMARY

OF MONITORING RESULTS 5 40 Summary The Annual Radiological Environmental Operating Report presents data obtained through analyses of environmental samples collected for Grand Gulf NuclearStation's(GGNS)

Radiological Environmental Monitoring Program (REMP)for the period January 1, 2011, through December 31, 2011.This report fulfills the requirements of GGNS Technical Specification 5.6.2.To supplement the REMP, GGNS personnel installed duplicate TLDs and collected duplicate surface water and groundwater samples during the reportingperiod.Special samples collected to supplement the REMP included surface water.Radiological Environmental Monitoring Program GGNS established the REMP in 1978 prior to the station becoming operational (1985)to provide data on background radiation and radioactivity normally present in the area.GGNS has continued to monitor the environment by sampling air, water, sediment, fish and food products, as well as measuring radiation directly.GGNS also samples milk, if commercial milk production occurs within five miles of the plant.The REMP includes sampling indicator and control locations within an 18-mile radius of the plant.The REMP utilizes indicator locations near the site to show any increases or buildup of radioactivity that might occur due to station operation and control locations farther away from the site to indicate naturally occurring background radioactivity.

GGNS personnel compare indicator results with control and preoperational results to assess any impact GGNS operation might have had on the surrounding environment.

In the current year, GGNS personnel collected environmental samples for radiological analysis.The results of indicator locations when compared to control locations and previous studies, determined that no significant relationship exists between GGNS'operation and effect on the plant environs.The review of the current year's data, in many cases, showed undetectableradiationlevels in the environment and near background levels in significant pathways associated with GGNS.6 Harmful Effects or Irreversible Damage The REMP monitoring did not detect any harmful effects or evidence of irreversible damage in the current year.Reporting Levels GGNS'review indicates that no samples equaled or exceeded reporting levels for radioactivity concentration in environmental samples, as outlined in Offsite Dose Calculation Manual (ODCM)Specifications Table 6.12.1-2, when averaged over any calendar quarter, due to GGNS effluents.

The analytical results did not trigger any Radiological Monitoring Program Special Reports.Radioactivity Not Attributable to GGNS In previous years, the GGNS REMP detected radioactivity attributable to other sources twice.These include the Chinese nuclear test explosion in 1980, and the radioactive release due to reactor core degradation at the Chernobyl Nuclear Power Plant in 1986.In 2011, the GGNS REMP detected radioactivity following the March 11, 2011, Tohoku earthquake affecting the Dai-ichi, Fukushima Nuclear Power Plant.Given that the radioactivity was detected following the Fukushima incident, the pre-and post-Fukushima radioactivity levels were at, or near, background levels with similar measurements detected in control and indicator locations, the detected radioactivity was determined not attributable to GGNS operations.

Comparison to Federal and State Programs GGNS personnel compared REMP data to federal and state monitoring programs as the results became available.

Historically, the programs used for comparison have included the U.S.Nuclear Regulatory Commission (NRC)Thermoluminescent Dosimeter (TLD)Direct Radiation Monitoring Network and the Mississippi State Department of Health (MSDH), Division of Radiological Health.Although the NRC TLD Network Program was discontinued in 1998, these results compared favorably to those from the GGNS REMP.The MSDH and the GGNS REMP have similar monitoring requirements.

These programs include concurrent air sampling and sharing sample media such as water, sediment, fish and food products.Both programs have obtained similar results.The results of MSDH's monitoring program for the reporting period compared favorably with the GGNS REMP.MSDH and GGNS reported detectable radioactivity in the same periods during the Dai-ichi, Fukushima Nuclear Power Plant incident.7 Sample Deviations

• Milk The REMP did not include milk sampling within 5 miles[8 kilometers (km)]of GGNS in the current year due to unavailability.

The aDCM requires collection of milk samples if available commercially within 5 miles (8 km)of the plant.GGNS personnel collected vegetation samples to monitor the ingestion pathway, as specified in aDCM Specifications Table 6.12.1-1, because ofmilkunavailability.

• Required Lower Limit of Detection (LLD)Values Analytical LLDs during this reporting period were within the acceptable limits required by the aDCM specifications.

• Thermoluminescent TLD, M-25 (Sector N, Radius 1.6 Miles), at Radial Well Number 1 was inaccessible for the 1 st, 2 nd and 3 rd quarter, 2011, due to river level.8

• Air Samples The following air sample locations had reduced run times due to weather-related outages or mechanical problems.As described in ODeM Specification Table 6.12.1-1, footnote (a), deviations from the required sampling schedule are permitted due to malfunction of sampling equipment and other legitimate reasons.Run Time Out-of-Service Sample Location Date In Date Out Hours Hours Comments AS-7 UH02/22/1103/01/11 161.84 1.59 Power Outage AS-7 UH03/08/1103/15/11 167.53 0.52 Power Outaae AS-1 PG 03/08/11 03/15/11 165.86 1.17 Power Outaae AS-7 UH 03/15/11 03/22/11 167.38 0.48 Power Outaae AS-7 UH 03/29/11 04/05/11 153.60 1.43 Power Outaae AS-361 VA 06/08/11 06/14/11 152.98 0.62 Equipment Malfunction AS-7 UH 08/30/11 09/06/11 163.46 2.97 Power Outage AS-361 VA 10/19/11 10/25/11 140.09 3.00 Power Outaae AS-361 VA 10/25/11 10/31/11 56.06 99.23 Equipment Malfunction AS-361 VA10/31/1111/07/11 23.27 141.05 Equipment Malfunction AS-361 VA11/22/1111/30/11 174.11 5.72 Equipment Malfunction AS-361 VA 11/30/11 12/07/11 142.14 27.71 Equipment Malfunction Based on the sample collection period reductions, air samples were collected the following percentages of the available time:*Missed Samples AS-1 PG AS-361VA AS-7 UH 99.99%96.88%99.92%All required samples were collected in accordance with REMP requirements.

There were no missed samples.*Unavailable Results GGNS received analytical results in adequate time for inclusion in this report.9 Program Modifications No REMP modifications took place during this sampling period.Attachments Attachment 1 contains results of TLD, air, water, sediment, fish, food products and special samples collected.

TLDs were analyzed by Environmental Dosimetry Company (EDC).All other samples were analyzed by the Entergy, River Send Station (RSS), Environmental Laboratory.

Attachment 1 also contains RSS'results from participation in the interlaboratory comparison program and Environmental Dosimetry Company's Annual Quality Assurance Status Report.10

1.0 Introduction

1.1 Radiological

Environmental Monitoring Program GGNS established the REMP to ensure that plant operating controls properly function to minimize any radiation that could endanger human health or the environment.

The REMP is designed to:*Analyze important pathways for anticipated types and quantities of radionuclides released into the environment,*Consider the possibility of a buildup of long-lived radionuclides in the environment and identify any physical and biological accumulations that may contribute to human exposures,*Consider the potential radiation exposure to plant and animal life in the environment surrounding GGNS,*Correlate levels of radiation and radioactivity in the environment with radioactive releases from the operation of GGNS.1.2 Pathways Monitored The airborne, direct radiation, waterborne and ingestion pathways, as seen in Figure 1-1 are monitored as required by the GGNS aDCM Table 6.12.1-1.A description of the GGNS REMP utilized to monitor the exposure pathways is provided in Table 1.1 and shown in Figures 1-2 and 1-3.GGNS may supplement this program with additional sampling in order to provide a comprehensive and well-balanced program.Section 2.0 of this report provides a discussion of sampling results, with Section 3.0 providing a summary of results for the monitored exposure pathways.11 1.3LandUse Census GGNS personnel conduct a land use census biannually, as required by ODCM Specification 6.12.2.Data for the most recent land use census is included.The purpose of this census is to identify changes in uses of land within 5 miles of GGNS that would require modifications to the REMP or the ODCM.The most important criteria during this census are to determine the location in each sector of the nearest:1)2)3)Residence Animal milked for human consumption 2 2 Garden of greater than 50 square meters (m)[500 square feet (ft)]producing broadleaf vegetation GGNS personnel conduct the land use census by:*Conducting field surveys in each meteorological sector out to five miles in order to confirm:*Nearest permanent residence*Nearest unoccupied residence*Nearest garden and approximate size*Nearest milking animal*Identifying locations on maps, measuring distances to GGNS and recording results on surveillance data sheets*Comparing current land use census results to previous results*Contacting the Claiborne County Agent for verification of nearest dairy animals 12 Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Airborne Radioiodine and Particulates AS-7 UH (Sector H, Radius 0.5 Continuous sampler Radioiodine Cannister-1-1 sample close to the SITE Miles)-South-southeast of GGNS operation with sample 131;7 days BOUNDARY having the highest at the IBEW Union Hall.collection per 7 days or as calculated annual average required by dust loading, Particulate Sampler-groundlevel D/O.whichever is more Gross beta radioactivity frequent following filter change, composite (by location)for gamma isotopic;92 days Radioiodine and Particulates AS-1 PG (Sector G, Radius 5.5 1 sample from the vicinity of a Miles)-Southeast of GGNS at the community having the highest Port Gibson City Barn.calculated annual average groundlevel D/O.Radioiodine and Particulates AS-3 61VA (Sector B, Radius 18 1 sample from a control location Miles)-North-northeast of GGNS 15-30 km (10-20 miles)on Hwy 61, North of the Vicksburg distance.Airport.Direct TLDs M-16 (Sector A, Radius 0.9 Miles)92 days Gamma dose;92 days Radiation An inner ring of stations in the-Meteorological Tower.general areas of the SITE BOUNDARY.M-19 (Sector E, Radius 0.5 Miles)-Eastern SITE BOUNDARY Property line, North-northeast of HWSA.13 Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs M-21 (Sector J, Radius 0.4 Miles)-92 days Gamma dose;92 days Radiation An inner ring of stations in the Near Former Training Center Building general areas of the SITE on Bald Hill Road.BOUNDARY.M-22 (Sector G, Radius 0.5 Miles)-Former RR Entrance Crossing On Bald Hill Road.M-23 (Sector Q, Radius 0.5 Miles)-Gin Lake Road 50 Yards North of Heavy Haul Road on Power Pole.M-25 (Sector N, Radius 1.6 Miles)-Radial Well Number 1.M-28 (Sector L, Radius 0.9 Miles)-Bald Hill Road.M-94 (Sector R, Radius 0.8 Miles)-Sector R Near Meteorological Tower.14 Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Of Analyses Frequency Direct TLDs M-95 (Sector F, Radius 0.5 mil-Spoils 92 days Gamma dose;92 days Radiation An inner ring of stations in the Area, fence of old storage area, near general areas of the SITE entrance gate BOUNDARY.M-96 (Sector B, Radius 0.7 mi.)-North Gate Fence M-97 (Sector D, Radius 0.8 mi.)-Grand Gulf Road entrance gate to spoils area M-98 (Sector H, Radius 0.5 mi.)-Bald Hill Road, across from Union Hall, in curve M-99 (Sector K, Radius 0.4 mi.)-North Fenceofold Ball Field near utility pole M-100 (Sector C, Radius 0.6 mi.)-Grand Gulf Road TLDs M-36 (Sector P, Radius 5.0 Miles)-An outer ring approximately 3 to Curve on HW 608, Point Nearest GGNS 5 miles from the site.at Power Pole.M-40 (Sector M, Radius 2.3 Miles)-Headly Drive, Near River Port Entrance.Table 1.1 15 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs M-48 (Sector K, Radius 4.8 Miles)-92 days Gamma dose;92 days Radiation An outer ring approximately 3 0.4 Miles South on Mont Gomer Road to 5 miles from the site.on West Side.M-49 (Sector H, Radius 4.5 Miles)-Fork in Bessie Weathers Road/Shaifer Road.M-50 (Sector B, Radius 5.3 Miles)-Panola Hunting Club Entrance.M-55 (Sector D, Radius 5.0 Miles)-Near Ingelside Karnac Ferry Road/Ashland Road Intersection.

M-57 (Sector F, Radius 4.5 Miles)-Hwy 61, Behind the Welcome to Port Gibson Sign at Glensdale Subdivision.

TLDs M-01 (Sector E, Radius 3.5 Miles)-8 stations in special interest Across the road from Lake Claiborne areas such as population Entry Gate.(Special Interest)centers, nearby residences, schools, and in 1 or 2 areas to M-07 (Sector G, Radius 5.5 Miles)-serve as control stations.AS-1 PG, Port Gibson City Barn.(Special Interest)M-09 (Sector D, Radius 3.5 Miles)-Warner Tully V-Camp.(Special Interest)M-10 (Sector A, Radius 1.5 Miles)-Grand Gulf Military Park.(Special Interest)16 Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs M-14 (Sector B, Radius 18.0 Miles)92 days Gamma dose;92 days Radiation 8 stations in special interest-AS-3-61 VA, Hwy 61, North of areas such as population Vicksburg Airport.(Control)centers, nearby residences, schools, and in 1 or 2 areas to M-33 (Sector P, Radius 12.5 Miles)serve as control stations-Newellton, Louisiana Water Tower.(Special Interest)M-38 (Sector M, Radius 9.5 Miles)-Lake Bruin State Park, Entrance Road.(Special Interest)M-39 (Sector M, Radius 13.0 Miles)-St.Joseph, Louisiana, Auxiliary Water Tank.(Special Interest)17 Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Of Analyses Frequency Waterborne Surface Water MRUP (Sector R, Radius 1.8 Miles)-At 92 days Gamma isotopic and 1 sample upstream.least 4500 ft upstream of the GGNS tritium analyses;92 discharge point into the Mississippi River to days allow adequate mixing of the Mississippi and Big Black Rivers.1 sample downstream.

MRDOWN (Sector N, Radius 1.6 Miles)-At least 5000 ft downstream of the GGNS discharge point into the Mississippi River near Radial Well NO.1.1 sample downstream during a MRDOWN (Sector P, Radius 1.3 Miles)-366 days Gamma isotopic and Liquid Radwaste Discharge.

Downstream of the GGNS discharge point in tritium analyses;366 the Mississippi River near Radial Well No.5.days 31 days 1 sample from Outfall 007 OUTFALL 007 (Sector N, Radius 0.2 Tritium;31 days Miles)-Storm Drain System 18 Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Waterborne Groundwater PGWELL (Sector G, Radius 5.0 366 days Gamma isotopic and Samples from 2 sources.Miles)-Port Gibson Wells-Taken tritium analyses;366 days from distribution system or one of the five wells.CONSTWELL (Sector Q, Radius 0.4 Miles)-GGNS Construction Water Well-Taken from distribution system or the well.Sediment From Shoreline SEDHAM (Sector N, Radius 1.6 366 days Gamma isotopic;366 days 1 sample from downstream Miles)-Downstream of the GGNS area.discharge point in the Mississippi River near Hamilton Lake outlet.SEDCONT (Minimum of 100 yds)-1 sample from upstream area.Upstream of the GGNS discharge point in the Mississippi River.Ingestion Milk Currently, no available milking 92 days when required Gamma isotopic and 1-131;1 sample from milking animals within 8 km of GGNS.92 days animals within 8 km if milk is available commercially.

1 control sample (only if ALCONT (Sector K, Radius 10.5 indicator exists)>8 km if milk Miles}-Located South-southwest of is available.

GGNS atAlcornState University.

19 Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Ingestion Fish FISHDOWN-Downstream of the 366 days Gamma isotopic on edible 1 sample in vicinity of GGNS GGNS discharge point into the portion;366 days discharge point.Mississippi River 1 sample uninfluenced by GGNS discharge.

FISHUP-Upstream of the GGNS discharge point into the Mississippi River uninfluenced by plant operations.

Food Products VEG-J (Sector J, Radius 0.4 Miles)92 days when available Gamma isotopic and 1-131;1 sample of broadleaf-South of GGNS near former 92 days vegetation grown in one of two Training Center on Bald Hill Road.different offsite locations with highest anticipated annual average ground level D/Q if milk sampling is not performed.

VEG-CONT (Sector K, Radius 10.5 1 sample of similar vegetation Miles)-Alcorn State University grown 15-30 km distant if milk south-southwest of GGNS when sampling is not performed.

available, otherwise a location 15-30 km distant.20 FIGURE 1-1 Exposure Pathways 21rllgestfon Grona GU!!.Udt 1 2.Q.-7 11li:...i<lloll:31 02/09 Collection Site locations 0-4 Mile Nea Map FIGURE 1-2 SAMPLE COLLECTION SITES-NEAR FIELD 1->--:'l)-f 22 FIGURE 3.0-1 LEGEND P FishAtr Sampler y)Sur!ace Water....Groond Walet GJ fJroadleaf VegBtation

• Sediment (J TLO*Ranney We,is Ill-Milk e CNTERGY (.,if1P,t,;O GULF NUCLEAR ST/"ilON 0--4 Mi\ll Sanlpiing Location Map I0 I

• 1 SCALF IN MILES FIGURE 1-3 SAMPLE COLLECTION SITES-FAR FIELD Sl¥ti)W W,"C'f fLO..." LEGEND o 8 o-.-----'-'-....-.....-..---."'1 FiGURE 3.0-2 I I I:a J.!;l£S F-fiOM Gh..\H{)GL{F fO

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Coliection Site Locations, General Area Map 4-10 Mile Area MapENTERGY GIV\NQ GULF NUCLEAR STA110N ,4-<0 Mae Envin)nm(Jnlal S,-,(npU11\]

Localiofl Map Gland Gult.unit 1 3.Q..6 ReviSiOfl:35 W{ll E f')Fo""-"[I¢)c G ,(SEjI d_:i--8 IItt)lu we.fr;:;Im Or*.;!.G<J Q (!ill)p 23

2.0 Interpretation

and Trends of Results 2.1 Air Particulate and Radioiodine Sample Results GGNS did not detect any plant related gamma emitting radionuclides in the quarterly air particulate composites.

lodine-131 was detected in Air Sample locations (AS-1 PG, AS-3 61VA and AS-7)for two Air Sample collection periods (3/22/11-3/29/11 and 3/29/11-4/5/11)following the March 11, 2011 Tohoku earthquake and the Dai-ichi, Fukushima Nuclear Power Plant incident.Given the following facts, the detectable concentrations are not a result of GGNS operation:

(1)The quantities of radioactive airborne effluents from GGNS during 2011, did not increase significantly compared to year 2010.(2)The radioactivity detected in the indicator samples were also identified in control samples far from GGNS.The atypical detection of lodine-131 in both indicator and control samples is credibly attributed to the trans-Pacific transport of airborne releases from the Dai-ichi, Fukushima incident and is not related to the operations of GGNS.The REMP detected radioactivity attributable to other sources in this pathway twice before Fukushima.

These include the Chinese nuclear test in 1980, and the radioactive release due to reactor core degradation from the Chernobyl Nuclear Power Plant in 1986.Therefore, the airborne exposure pathway has been unaffected by the operation of GGNS and airborne concentrations have returned to background levels.Table 3.1, which includes gross beta activity, provides a comparison of the indicator and control means and ranges, further emphasizing that the airborne pathway remains at background levels.In the absence of plant-related gamma radionuclides, gross beta activity is attributed to naturally occurring radionuclides.

Similar trends are present for control and indicator locations, which supports the presence of naturally occurring radioactivity.

2.2 Thermoluminescent

Dosimetry Sample Results GGNS calculates dose by subtracting shield readings from control and indicator location readings and reportsmeasureddose as net exposure, normalized to 92 days.GGNS relies on the comparison of the indicator locations to the control location as an indication of plant impact.Gamma radiation dose in the reporting period is compared to control location readings for previous years as shown in Figure 2-1.The comparison of the indicator results to the control, and to previous indicator results, as seen in Figure 2-1 and Table 3.1, indicates that plant operation has had no significant impact on ambient radiation levels during the reporting period.In previous years, TLD locations M-21 (Sector J, 0.4 miles), M-98 (Sector H, 0.5 miles and M-99 (Sector K, 0.4 miles)were above background.

The dose rate at these three locations was the result of Nitrogen-16 (N-16)associated with the injection of hydrogen and subsequent N-16 production.

Hydrogen injection into the feedwater system provides protection against Intergranular Stress Corrosion of plant components.

In November 2010, the hydrogen injection rate was lowered, with the dose rates at TLD locations21, M-98 and M-99 returning to background levels.24 Figure 2-1 2011 TLD Readings o mRlqtr 20.0 i I 16.0!i*ix'12.0 r.X X 0 8 H 0 x**x**8.0 0 4.0 x 6 X*xx x x X 6 6 0*0 0 8 6***xx x{j X 6 X 0*a*0*Q 2006-2010 Control Location x M Maximum x x 0 a 6 6 (+2 Stdev)*0 0 6***2006-2010 i x Control x Location x x0 Minimum ij 0 (-2 Stdev)0.0I*atr 1, 2011 0 atr 2, 2011 6 Qtr 3, 2011 x atr 4, 2011 I iii i i 2.3 Water Sample Results Surface water samples were collected from three indicator locations (Outfall 007, MRDOWN, and MRDOWN During Discharge) and one control location (MRUP)and analyzed for gamma emitting radionuclides and tritium.Plant related gamma emitting radionuclides and tritium remained undetectable in the upstream and downstream Mississippi River locations, which is consistent with preoperational and previous operational years.Storm waters contribute to Outfall 007 and can include tritium as a result of washout and entrainment of normal, previously monitored gaseous effluents.

As a result, tritium is occasionally observed.In 2011, when detected, tritium was measured at an average concentration of 4606+/-284 pCi/L in the Outfall 007 (indicator) location.In addition to the tritium samples required by the REMP, six special surface water samples for gamma emitting radionuclides were collected at the Outfall 007 location.Plant related gamma emitting radionuclides remained undetectable in these samples.Based on review of results and historical data, plant operations had no significant impact on this pathway during the reporting period.25 Groundwater samples were collected from two locations (indicator and control)and analyzed for gamma emitting radionuclides and tritium.GGNS did not detect any plant related gamma emitting radionuclides or tritium in groundwater samples during the reporting period.Based on review of results and historical data, plant operations had no significant impact on this pathway during the reporting period.2.4 Sediment Sample Results Sediment samples were collected from two locations (indicator and control)and analyzed for gamma emitting radionuclides.

In this reporting period, plant related gamma emitting radionuclides were below detectable concentrations in the upstream(control)location.

Cesium-137 was detected at a concentration of 17.3+/-8.2 pCilkg in the downstream (indicator) location.A review of REMP data collected at the downstream location from 1983 through 2010 indicates the Cesium-137 concentration has ranged from less than detectable to 300 pCi/Kg.Cesium-137 has previously been detected in the upstream(control)location.

The presence of Cesium-137 is attributed to atmospheric weapons testing.Based on review of results and historical data, plant operations had no significant impact on this pathway during the reporting period.2.5 Milk Sample Results Milk samples were not collected within five miles of the site in the reporting period due to the absence of milking animals.Since there are no dairies within five miles of GGNS, and based on non-detectable radioiodine and gamma radionuclides in air and vegetation samples, plant operations had no impact on this pathway during the reporting period.2.6 Fish Sample Results Fish samples were collected from two locations (indicator and control)and analyzed for gamma emitting radionuclides.

GGNS did not detect any plant related gamma emitting radionuclides in fish samples (edible portions)during the reporting period, as has been the case in preoperational and previous operational years.These results indicate that this pathway has not been affected by plant operations.

2.7 Food Product (Vegetation)

Sample Results Food product samples were collected from control and indicator locations and analyzed for lodine-131 and gamma emitting radionuclides.

GGNS did not detect any plant related lodine-131 or gamma emitting radionuclides in vegetation samples during the reporting period.Nuclides detected previously at the control and indicator locations are attributed to the Chernobyl release and atmospheric weapons testing.These results indicate that this pathway has not been affected by plant operations.

26 2.8 Land Use Census Results Results from the Land Use Census performed October 5-12, 2010 are included in this report.Methods utilized to perform the Land Use Census include: visual surveys, door to door surveys, telephone interviews, Global Positioning System (GPS), Aerial Photography, and consultation with the local county agent concerning dairy production in Claiborne County.During the survey the following information was obtained: 1)location of occupied and unoccupied residence 2)location of dairy production 3)location of gardens Changes from the previous Land Use Census were evaluated in accordance with GGNS surveillance"Land Use Census", 06-EN-SOOO-0-0002.

The differences were compared to the locations and assumptions used in calculations for compliance with the ODCM Limiting Condition for Operation 6.11.6.The locations and assumptions currently used in ODCM were determined more conservative than any of the changes.Determinations from the most recent Land Use Census results are:*Because of downwind location and/or distance from the site, in no case will the occupancy of an existing unoccupied residence cause any existing ODCM critical receptor calculation results to be less conservative.

• No additional sampling locations are required as the onsite vegetation sampling location (Sector J, 0.4 miles)is more conservative than changes identified in the land use census.*Cattle are raised for human consumption (most notably in Sector H, J, and K).GGNS uses the Grass/Cow/Meat pathway.*The milk pathway does not need to be activated because no commercial dairy production is occurring within 5 miles, as referenced by ODCM Table 6.12.1-1.*Sectors M, N, P, and Q are remote areas in which the primary use is hunting.Areas were surveyed by vehicle and aerial photographs.

• Gardens, regardless of size, were included in the census data 27 Table 2.1 Land Use Census Parameter Sector A*Sector B*Sector C Sector D I.Nearest Occupied a.Distance (mile)0.98 1.52 0.67 2.57 Residence b.Degrees from true north 354.0 21.9 42.1 60.5 II.Nearest Unoccupied a.Distance (mile)0.94 0.83 None None Residence (closer b.Degrees from true north 8 15.1 than occupied residence)

III.Nearest Milk Animal a.Distance None None None None IV.Nearest Broadleaf a.Distance (mile)1.80 1.52 0.67 2 2.86 Garden b.Garden size (ft2)"" 100",,4050"" 1250"" 500 c.Degrees from true north 353 21.9 42.1 59.7 V.Census Comparison a.Is nearest occupied Yes No Yes Yes residence in same location as last census?b.Is nearest milk animal in N/A N/A N/A N/A same location as last census?c.Is nearest broadleaf No Yes 1 Yes Yes garden in same location as last census?1 Property was inaccessible.

Retained previous garden location.Located no other gardens in sector.2Currently not planted.Retained due to potential to plant.Next nearest garden@4.53 mi, 49 degrees",200 ft2*Change from last census, see Land Use Census Changes 28 Table 2.1 Land Use Census Parameter Sector E Sector F*Sector G*Sector H*I.Nearest Occupied a.Distance (mile)0.83 2.25 3.71 1.11 Residence b.Degrees from true north 95.1 101.5 132 152.5 II.Nearest Unoccupied a.Distance (mile)None None 2.10 1.08 Residence (closer b.Degrees from true north 129.7 152.5 than occupied residence)

III.Nearest Milk Animal a.Distance None None None None IV.Nearest Broadleaf a.Distance (mile)0.89 4.53 3.39 4.39 Garden b.Garden size (ft2)",,1000",,100",,3.2E51",,200 c.Degrees from true north 86.9 113 129 155 V.Census Comparison a.Is nearest occupied Yes Yes No Yes residence in same location as last census?b.Is nearest milk animal in N/A N/A N/A N/A same location as last census?No c.Is nearest broadleaf garden Yes No No in same location as last census?1 Melon and Tomato fields, not broadleaf.

• Change from last census, see Land Use Census Changes 29 Table 2.1 Land Use Census Parameter Sector J Sector K Sector L Sector M I.Nearest Occupied a.Distance (mile)3.16 2.23 0.89 None Residence b.Degrees from true north 174.3 196.9 219.7 II.Nearest Unoccupied a.Distance (mile)None 1.64 None None Residence (closer than Hunting occupied residence)

Lodge (Info Only)III.Nearest Milk Animal a.Distance None None None None IV.Nearest Broadleaf a.Distance (mile)3.16 2.23 0.89 None Garden b.Garden size (ft 2)"" 500",,2500"" 50 c.Degrees from true north 174.3 196.9 219.7 V.Census Comparison a.Is nearest occupied Yes Yes Yes N/A residence in same location as last census?b.Is nearest milk animal in N/A N/A N/A N/A same location as last census?c.Is nearest broad leaf Yes Yes Yes N/A garden in same location as last census?30 Table 2.1 Land Use Census Parameter Sector N Sector P*Sector Q*Sector R*I.Nearest Occupied a.Distance (mile)None None None 1.11 Residence b.Degrees from true north 346.1 II.Nearest Unoccupied a.Distance (mile)1.61 None 1 None 2 None Residence (closer Bucksnort Camp than occupied (Info Only)residence)

III.Nearest Milk Animal a.Distance None None None None IV.Nearest Broadleaf a.Distance (mile)None None None None Garden b.Garden size (ft 2)c.Degrees from true north V.Census Comparison a.Is nearest occupied N/A N/A N/A Yes residence in same location as last census?b.Is nearest milk animal in N/A N/A N/A N/A same location as last census?c.Is nearest broadleaf N/A N/A N/A No garden in same location as last census?'Previous[2008]residence@4.83 miles appeared uninhabitable 2Previous[2008]location not present*Change from last census, see Land Use Census Changes 31 Land Use Census Changes SECTOR PARAMETER Reason for Change A Nearest Broadleaf Garden No Garden at 2008 location, new location listed B Nearest Unoccupied Residence 2008 Nearest Occupied Residence now Unoccupied B Nearest Occupied Residence New Nearest Occupied residence F Nearest Broadleaf Garden No Garden at 2008 location, new location listed G Nearest Unoccupied Residence 2008 Residence appeared uninhabitable, new location listed G Nearest Occupied Residence 2008 Nearest Occupied Residence now Unoccupied G Nearest Broadleaf Garden No Garden at 2008 location, new location listed H Nearest Broadleaf Garden No Garden at 2008 location, new location listed p Nearest Unoccupied Residence 2008 Residence appeared uninhabitable Q Nearest Unoccupied Residence 2008 Nearest Unoccupied Residence not present R Nearest Broadleaf Garden No Garden at 2008 location 32

2.9 Interlaboratory

Comparison Results The Entergy, River Bend Station (RBS)Environmental Laboratory analyzed interlaboratory comparison samples to fulfill the requirements of the aDCM Specifications 6.12.1.Attachment 1, Table 9.1, contains these results.100%of results were within control limits for accuracy, and 100%of results were within control limits for precision.

Environmental Dosimetry Company analyzed interlaboratory comparison Thermolumincescent Dosimeters.1 00%of the results passed precision and bias criteria.33

3.0 Radiological

Environmental Monitoring Program Summary 3.1 Program Results Summary Table 3.1 summarizes the REMP results.Values reported as less than the lower limit of detection<<LLD)were not used, when determining ranges and means for indicator and control locations.

34 TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Grand Gulf Nuclear Station Docket No: 50*416 Location of Facility: Claiborne County, Mississippi Reporting Period: January-December 2011 Sample Type Type&Number LLD b Indicator Locations Location with Highest Annual Mean Control Number of (Units)of Analyses a Mean (F)c Locations Nonroutine

[Range]Mean (F)c Results e[Range]Location d Mean (F)c[Range]Air Particulates GB 156 0.01 0.027 (104/104)AS-1 PG 0.027 (52/52)0.027 (52/52)0 (pCilm 3)[0.012-0.045](Sector G, 5.5 mi)[0.014-0.045][0.014-0.047]AS-7 UH 0.027 (52/52)(Sector H, 0.5 mi)[0.012-0.042]GS 12 Cs-134 0.05<LLD N/A N/A<LLD 0 Cs-137 0.06<LLD N/A N/A<LLD 0 Airborne Iodine 1-131 156 0.07 0.09 (4/104)AS-1 PG 0.101 (2/52)0.066 (2/52)0 (pCilm 3)[0.076-0.125](Sector G, 5.5 mi)[0.076-0.125][0.059-0.072]Inner Ring TLDs Gamma 53 f 10.0 (53/53)M-99 13.0 (4/4)N/A 0 (mRlQtr)[5.7-13.7](Sector J, 0.4 mi.)[11.8-13.7]

Outer Ring TLDs Gamma 28 f 10.2 (28/28)M-57 12.3(4/4)N/A 0 (mRlQtr)(Sector F, 4.5 mi.)[10.6-13.9]Special Interest Gamma 28 f[5.4-13.9]M-01 12.6 (4/4)N/A 0 TLDs 10.1 (28/28)(Sector E, 3.5 mi.)[11.7-13.1](mRlQtr)[6.7-13.1]

Control TLDs Gamma 4 f N/A N/A N/A 11.4 (4/4)0 (mRlQtr)[10.4-12.0]35 TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Grand Gulf Nuclear Station Docket No: 50-416 Location of Facility: Claiborne County.Mississippi Reporting Period: January-December 2011 Sample Type Type&Number LLD b IndicatorLocationLocation with Highest Annual Mean Control Number of (Units)of Analyses a Mean (F)c Locations Nonroutine

[Range]Mean (F)c Results e[Range]Location d Mean (F)c[Range]Surface Water H-3 28 3000 4606 (3/23)Outfall 007 4606 (3/14)<LLD 0 (pCill)[866-12025](Sector N, Radius 0.2 mi.)[866-12025]GS 13 1-131 15<LLD N/A N/A<LLD 0 Mn-54 15<LLD N/A N/A<LLD 0 Fe-59 30<LLD N/A N/A<LLD 0 Co-58 15<LLD N/A N/A<LLD 0 Co-60 15<LLD N/A N/A<LLD 0 Zn-65 30<LLD N/A N/A<LLD 0 Zr-95 30<LLD N/A N/A<LLD 0 Nb-95 15<LLD N/A N/A<LLD 0 Cs-134 15<LLD N/A N/A<LLD 0 Cs-137 18<LLD N/A N/A<LLD 0 Ba-140 60<LLD N/A N/A<LLD 0 La-140 15<LLD N/A N/A<LLD 0 36 TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Grand Gulf Nuclear Station Docket No: 50-416 Location of Facility: Claiborne County, Mississippi Reporting Period: January-December 2011 Sample Type Type&LLD b Indicator Locations Location with Highest Annual Mean Control Locations Number of (Units)Number Mean (F)c Mean (F)c Nonroutine of Analyses a[Range][Range]Results e Location d Mean (F)c[Range]Groundwater H-3 14 2000<LLD N/A N/A<LLD 0 (pCi/1)1-131 2 1<LLD N/A N/A<LLD 0 GS 12 Mn-54 15<LLD N/A N/A<LLD 0 Fe-59 30<LLD N/A N/A<LLD 0 Co-58 15<LLD N/A N/A<LLD 0 Co-60 15<LLD N/A N/A<LLD 0 Zn-65 30<LLD N/A N/A<LLD 0 Zr-95 30<LLD N/A N/A<LLD 0 Nb-95 15<LLD N/A N/A<LLD 0 Cs-134 15<LLD N/A N/A<LLD 0 Cs-137 18<LLD N/A N/A<LLD 0 Ba-140 60<LLD N/A N/A<LLD 0 La-140 15<LLD N/A N/A<LLD 0 Sediment GS 2 (pCi/kg)Cs-134 150<LLD N/A N/A<LLD 0 Cs-137 180 17.30 (1/1)SEDHAM 17.30(1/1)

<LLD N/A (Sector N, 1.6 Miles)N/A 37 TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Grand Gulf Nuclear Station Docket No: 50-416 Location of Facility: Claiborne County, Mississippi Reporting Period: January-December 2011 Sample Type Type&LLD b IndicatorLocationLocation with Highest Annual Control Number of (Units)Number Mean (F)c Mean Locations Nonroutine of Analyses a[Range]Mean (F)c Results e[Range]Mean (F)c Location d[Range]Fish GS 2 (pCilkg)Mn-54 130<LLD N/A N/A<LLD 0 Fe-59 260<LLD N/A N/A<LLD 0 Co-58 130<LLD N/A N/A<LLD 0 Co-60 130<LLD N/A N/A<LLD 0 Zn-65 260<LLD N/A N/A<LLD 0 Cs-134 130<LLD N/A N/A<LLD 0 Cs-137 150<LLD N/A N/A<LLD 0 Food 1-131 8 60<LLD N/A N/A<LLD 0 ProductsNegetation (pCilkg)GS 8 Cs-134 60<LLD N/A N/A<LLD 0 Cs-137 80<LLD N/A N/A<LLD 0 38 TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Grand Gulf Nuclear Station Docket No: 50-416 Location of Facility: Claiborne County, Mississippi Reporting Period: January-December 2011 Sample Type Type&Number LLD b Indicator Location Location with Highest Annual Control Number of (Units)of Analyses a Mean (F)c Mean Locations Nonroutine

[Range]Mean (F)c Results e[Range]Location d Mean (F)c r Ranae]Surface Water GS 6 (Special)1-131 15<LLD N/A N/A<LLD 0 (pCi/l)Mn-54 15<LLD N/A N/A<LLD 0 Fe-59 30<LLD N/A N/A<LLD 0 Co-58 15<LLD N/A N/A<LLD 0 Co-60 15<LLD N/A N/A<LLD 0 Zn-65 30<LLD N/A N/A<LLD 0 Zr-95 30<LLD N/A N/A<LLD 0 Nb-95 15<LLD N/A N/A<LLD 0 Cs-134 15<LLD N/A N/A<LLD 0 Cs-137 18<LLD N/A N/A<LLD 0 8a-140 60<LLD N/A N/A<LLD 0 La-140 15<LLD N/A N/A<LLD 0 a G8=Gross beta;1-131=lodine-131; H-3=Tritium;GS=Gamma scan.b LLD=Required lower limit of detection based on ODCM Table 6.12.1-3.c Mean and range based upon detectable measurements only.Fraction of detectable measurements at specified locations is indicated in parenthesis (F).d Where applicable, locations are specified by name, distance from reactor site and meteorological sector.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 ten times the preoperational value for the location.LLD is not defined in ODCM Table 6.12.1-3.39 Attachment 1 Radiological Monitoring Report Summary of Monitoring Results 40 T ABLE OF CONTENTS TABLE 1.1 AIR PARTICULATEFILTERGROSS BETA AND 42 CHARCOAL CARTRIDGE IODINE-131 TABLE 1.2 AIR PARTICULATE FILTER GAMMA 51 TABLE 2.1 THERMOLUMINESCENT DOSIMETERS 52 TABLE 2.2 THERMOLUMINESCENT DOSIMETERS 53 TABLE 2.3 THERMOLUMINESCENT DOSIMETERS 53 TABLE 3.1 SURFACE WATER GAMMA 54 TABLE 3.2 SURFACE WATER TRITIUM 55 TABLE 4.1 GROUNDWATER GAMMA 56 TABLE 4.2 GROUNDWATER TRITIUM 57 TABLE 4.3 GROUNDWATER IODINE*131 58 TABLE 5.1 SEDIMENT 59 TABLE 6.1 FISH 60 TABLE 7.1 FOOD PRODUCTS 61 TABLE 8.1 SPECIAL SAMPLES 62 TABLE 9.1 INTERLABORATORY COMPARISON 63 41 Table 1.1 Sample Type: Air Particulate Filter and Radioiodine Cartridge Analysis: Gross Beta and 1-131 Units: pCi/m 3 AIR SAMPLE AS-1 PG-Nearest Community LLD (pCilmJ\3) 0.07 0.01 LABID START DATE END DATE 1-131 GROSS BETA 20110004 12/29/10 01/04/11<0.023 0.024+/-0.0011 20110028 01/04/11 01/11/11<0.017 0.036+/-0.0012 2011005701/11/1101/18/11

<0.020 0.038+/-0.0011 20110125 01/18/11 01/26/11<0.016 0.030+/-0.0010 20110140 01/26/11 02/01/11<0.016 0.027+/-0.0011 2011016702/01/1102/08/11

<0.018 0.025+/-0.0010 20110176 02/08/11 02/16/11<0.020 0.023+/-0.0008 20110219 02/16/11 02/22/11<0.028 0.020+/-0.0010 20110273 02/22/11 03/01/11<0.026 0.019+/-0.0008 2011029903/01/1103/08/11

<0.018 0.021+/-0.0009 20110319 03/08/11 03/15/11<0.017 0.020+/-0.0009 20110371 03/15/11 03/22/11<0.014 0.024+/-0.0009 20110432 03/22/11 03/29/11 0.125+/-0.0157 0.028+/-0.0010 20110469 03/29/11 04/05/11 0.076+/-0.0122 0.026+/-0.0010 20110503 04/05/11 04/12/11<0.027 0.021+/-0.0009 2011054704/12/1104/19/11

<0.024 0.025+/-0.0010 20110606 04/19/11 04/26/11<0.023 0.017+/-0.0008 2011064204/26/1105/03/11

<0.026 0.020+/-0.0009 20110728 05/03/11 05/10/11<0.035 0.028+/-0.0010 20110753 05/10/11 05/17/11<0.031 0.018+/-0.0008 42 AS-l PG LLD (pCilm A 3)0.07 0.01 LAB 10 START DATE END DATE 1-131 GROSS BETA 20110802 05/17/11 OS/24/11<0.030 0.027+/-0.0010 20110825 OS/24/11 05/31/11<0.033 0.019+/-0.0009 2011083105/31/1106/07/11

<0.032 0.038+/-0.0011 2011088006/07/1106/15/11

<0.018 0.033+/-0.0010 2011092206/15/1106/21/11

<0.021 0.024+/-0.0010 20110964 06/21/11 06/28/11<0.022 0.015+/-0.0008 20110986 06/28/11 07/05/11<0.027 0.031+/-0.0010 2011101307/05/1107/12/11

<0.026 0.025+/-0.0009 20111065 07/12/11 07/18/11<0.025 0.014+/-0.0009 20111087 07/18/11 07/26/11<0.024 0.016+/-0.0007 2011113507/26/1108/02/11

<0.027 0.015+/-0.0008 20111158 08/02/11 08/09/11<0.028 0.025+/-0.0010 20111172 08/09/11 08/16/11<0.018 0.019+/-0.0009 2011120008/16/1108/23/11

<0.017 0.036+/-0.0011 20111258 08/23/11 08/30/11<0.017 0.038+/-0.0011 20111275 08/30/11 09/06/11<0.020 0.024+/-0.0010 20111309 09/06/11 09/13/11<0.018 0.034+/-0.0011 20111368 09/13/11 09/20/11<0.014 0.031+/-0.0010 20111396 09/20/11 09/28/11<0.018 0.030+/-0.0010 20111436 09/28/11 10/04/11<0.016 0.030+/-0.0011 20111450 10/04/11 10/11/11<0.015 0.033+/-0.0010 20111477 10/11/11 10/19/11<0.016 0.035+/-0.0010 43 AS-1 PG LLD (pCi/mJ\3) 0.07 0.01 LABID START DATE END DATE 1-131 GROSS BETA 20111493 10/19/2011 10/25/2011

<0.021 0.040+/-0.0012 20111518 10/25/2011 11/02/2011

<0.025 0.045+/-0.0011 2011152111/02/201111/08/2011

<0.018 0.024+/-0.0010 20111569 11/08/2011 11/15/2011

<0.022 0.027+/-0.0010 20111584 11/15/2011 11/22/2011

<0.019 0.021+/-0.0009 2011163611/22/201111/29/2011

<0.031 0.025+/-0.0009 20111669 11/29/2011 12/06/2011

<0.021 0.023+/-0.0009 20111744 12/06/2011 12/13/2011

<0.023 0.038+/-0.0011 2011174812/13/201112/20/2011

<0.013 0.032+/-0.0011 20111791 12/20/2011 12/27/2011

<0.016 0.030+/-0.0010 Average: 0.100 0.027 Maximum: 0.125 0.045 Minimum: 0.076 0.014 44 Table 1.1 Sample Type: Air Particulate Filter and Radioiodine Cartridge Analysis: Gross Beta and 1-131 Units: pCi/m 3 AIR SAMPLE AS-3 61 VA-Control LLD (pCilm/\3) 0.07 0.01 LABID START DATE END DATE 1-131 GROSS BETA 20110005 12/27/2010 01/04/2011

<0.015 0.022+/-0.0009 20110029 01/04/2011 01/11/2011

<0.015 0.033+/-0.0011 20110058 01/11/2011 01/18/2011

<0.015 0.034+/-0.0011 20110126 01/18/2011 01/25/2011

<0.024 0.030+/-0.0010 20110141 01/25/2011 02/01/2011

<0.017 0.030+/-0.0010 20110168 02/01/2011 02/08/2011

<0.016 0.024+/-0.0009 20110177 02/08/2011 02/15/2011

<0.023 0.024+/-0.0009 20110220 02/15/2011 02/22/2011

<0.023 0.021+/-0.0009 20110274 02/22/2011 03/01/2011

<0.025 0.019+/-0.0008 20110301 03/01/2011 03/08/2011

<0.014 0.023+/-0.0009 20110320 03/08/2011 03/14/2011

<0.015 0.021+/-0.0009 20110372 03/14/2011 03/21/2011

<0.015 0.024+/-0.0009 20110433 03/21/2011 03/30/2011 0.072+/-0.0121 0.026+/-0.0008 20110470 03/30/2011 04/05/2011 0.059-/+0.0111 0.027+/-0.0010 2011050404/05/201104/12/2011

<0.026 0.022+/-0.0009 20110548 04/12/2011 04/19/2011

<0.022 0.026+/-0.0010 20110607 04/19/2011 04/26/2011

<0.024 0.017+/-0.0008 2011064304/26/201105/02/2011

<0.027 0.019+/-0.0009 20110729 05/02/2011 05/09/2011

<0.029 0.023+/-0.0009 20110754 05/09/2011 05/16/2011

<0.029 0.020+/-0.0009 45 AS-361VA LLD (pCi/m A 3)0.07 0.01 LAB 10 START DATE END DATE 1-131 GROSS BETA 20110803 05/16/2011 OS/23/2011

<0.036 0.028+/-0.0010 20110826 OS/23/2011 05/31/2011

<0.023 0.019+/-0.0008 20110832 05/31/2011 06/08/2011

<0.030 0.039+/-0.0010 2011088106/08/201106/14/2011

<0.019 0.030+/-0.0011 20110923 06/14/2011 06/20/2011

<0.026 0.023+/-0.0010 2011096506/20/201106/28/2011

<0.024 0.014+/-0.0007 20110987 06/28/2011 07/06/2011

<0.022 0.028+/-0.0009 20111014 07/06/2011 07/12/2011

<0.024 0.020+/-0.0010 2011106607/12/201107/18/2011

<0.031 0.014+/-0.0008 20111088 07/18/2011 07/26/2011

<0.022 0.017+/-0.0008 20111136 07/26/2011 08/02/2011

<0.026 0.016+/-0.0008 20111159 08/02/2011 08/09/2011

<0.025 0.023+/-0.0009 20111173 08/09/2011 08/16/2011

<0.022 0.021+/-0.0009 20111201 08/16/2011 08/23/2011

<0.016 0.035+/-0.0011 2011125908/23/201108/30/2011

<0.016 0.035+/-0.0011 2011127608/30/201109/06/2011

<0.019 0.025+/-0.0010 20111310 09/06/2011 09/13/2011

<0.020 0.034+/-0.0011 20111369 09/13/2011 09/20/2011

<0.013 0.033+/-0.0011 20111397 09/19/2011 09/27/2011

<0.020 0.029+/-0.0009 20111437 09/27/2011 10/04/2011

<0.019 0.028+/-0.0010 20111451 10/04/2011 10/11/2011

<0.017 0.032+/-0.0010 2011147810/11/201110/19/2011

<0.012 0.035+/-0.0010 46 AS-361VA LLD (pCilmI\3) 0.07 0.01 LAB 10 START DATE END DATE 1-131 GROSS BETA 2011149410/19/201110/25/2011

<0.023 0.038+/-0.0012 2011151910/25/201110/31/2011

<0.065 0.047+/-0.0024 2011152210/31/201111/07/2011

<0.055 0.046+/-0.0045 20111570 11/07/2011 11/15/2011

<0.015 0.025+/-0.0009 20111585 11/15/2011 11/22/2011

<0.021 0.019+/-0.0009 2011163711/22/201111/30/2011

<0.039 0.027+/-0.0010 20111670 11/30/2011 12/07/2011

<0.026 0.029+/-0.0011 2011174512/07/201112/12/2011

<0.036 0.044+/-0.0014 20111749 12/12/2011 12/20/2011

<0.014 0.036+/-0.0011 20111792 12/20/2011 12/27/2011

<0.018 0.033+/-0.0011 Average: 0.066 0.027 Maximum: 0.072 0.047 Minimum: 0.059 0.014 47 Table 1.1 Sample Type: Air Particulate Filter and Radioiodine Cartridge Analysis: Gross Beta and 1-131 Units: pCi/m 3 AIR SAMPLE AS-7-Indicator LLD (pCilm"3)0.07 0.01 LAB 10 START DATE END DATE 1-131 GROSS BETA 20110006 12/29/2010 01/04/2011

<0.028 0.025+/-0.0011 2011003001/04/201101/11/2011

<0.020 0.041+/-0.0012 20110059 01/11/2011 01/18/2011

<0.022 0.039+/-0.0011 20110127 01/18/2011 01/25/2011

<0.027 0.032+/-0.0011 20110142 01/25/2011 02/01/2011

<0.017 0.031+/-0.0010 20110169 02/01/2011 02/08/2011

<0.013 0.026+/-0.0010 20110178 02/08/2011 02/15/2011

<0.024 0.022+/-0.0009 20110221 02/15/2011 02/22/2011

<0.024 0.023+/-0.0009 2011027502/22/2011030/1/2011

<0.030 0.018+/-0.0009 20110302 03/01/2011 03/08/2011

<0.019 0.023+/-0.0009 2011032103/08/201103/15/2011

<0.020 0.020+/-0.0009 20110373 03/15/2011 03/22/2011

<0.016 0.022+/-0.0009 2011043403/22/201103/29/2011 0.080+/-0.0186 0.032+/-0.0010 20110471 03/29/2011 04/05/2011 0.078+/-0.0099 0.026+/-0.0010 2011050504/05/201104/12/2011

<0.023 0.022+/-0.0009 20110549 04/12/2011 04/19/2011

<0.020 0.024+/-0.0010 2011060804/19/201104/26/2011

<0.021 0.018+/-0.0008 20110644 04/26/2011 05/03/2011

<0.028 0.019+/-0.0009 2011073005/03/201105/10/2011

<0.028 0.026+/-0.0010 20110755 05/10/2011 05/17/2011

<0.030 0.019+/-0.0008 48 AS-7UH LLD (pCilmI\3) 0.07 0.01 LABID START DATE END DATE 1-131 GROSS BETA 20110804 05/17/2011 OS/24/2011

<0.029 0.029+/-0.0010 20110827 OS/24/2011 05/31/2011

<0.027 0.018+/-0.0008 2011083305/31/201106/07/2011

<0.031 0.037+/-0.0010 20110882 06/07/2011 06/14/2011

<0.027 0.031+/-0.0010 20110924 06/14/2011 06/21/2011

<0.024 0.020+/-0.0008 2011096606/21/201106/28/2011

<0.023 0.012+/-0.0008 20110988 06/28/2011 07/05/2011

<0.023 0.026+/-0.0010 20111015 07/05/2011 07/12/2011

<0.029 0.020+/-0.0009 20111067 07/12/2011 07/18/2011

<0.031 0.012+/-0.0008 20111089 07/18/2011 07/26/2011

<0.021 0.013+/-0.0007 20111137 07/26/2011 08/02/2011

<0.025 0.014+/-0.0008 2011116008/02/201108/09/2011

<0.021 0.024+/-0.0009 20111174 08/09/2011 08/16/2011

<0.018 0.021+/-0.0009 20111202 08/16/2011 08/23/2011

<0.017 0.036+/-0.0011 20111260 08/23/2011 08/30/2011

<0.017 0.038+/-0.0011 2011127708/30/201109/06/2011

<0.021 0.024+/-0.0010 20111311 09/06/2011 09/13/2011

<0.021 0.034+/-0.0011 20111370 09/13/2011 09/20/2011

<0.011 0.032+/-0.0010 2011139809/20/201109/27/2011

<0.022 0.032+/-0.0011 20111438 09/27/2011 10/04/2011

<0.017 0.031+/-0.0011 20111452 10/04/2011 10/11/2011

<0.013 0.035+/-0.0011 20111479 10/11/2011 10/19/2011

<0.012 0.040+/-0.0011 49 AS-7UH LLD (pCilm A 3)0.07 0.01 LAB 10 START DATE END DATE 1-131 GROSS BETA 20111495 10/19/2011 10/25/2011

<0.031 0.040+/-0.0012 20111520 10/25/2011 11/02/2011

<0.029 0.042+/-0.0011 20111523 11/02/2011 11/08/2011

<0.023 0.027+/-0.0011 20111571 11/08/2011 11/15/2011

<0.024 0.029+/-0.0010 20111586 11/15/2011 11/22/2011

<0.022 0.019+/-0.0009 20111638 11/22/2011 11/29/2011

<0.040 0.025+/-0.0009 20111671 11/29/2011 12/06/2011

<0.024 0.022+/-0.0009 20111746 12/06/2011 12/13/2011

<0.021 0.041+/-0.0011 20111750 12/13/2011 12/20/2011

<0.014 0.029+/-0.0011 20111793 12/20/2011 12/27/2011

<0.016 0.028+/-0.0010 Average: 0.079 0.027 Maximum: 0.080 0.042 Minimum: 0.078 0.012 50 Table 1.2 Sample Type: Air Particulate Filter Analysis: Gamma Isotopic Units: pCi/m 3 AIR PARTICULATE FILTER QUARTERLY COMPOSITES (GAMMA)LLD (pCi/m A 3)0.05 0.06 LASlO LOCATION DATE CS-134 CS-137 20110500 AS-1PG 02/12/2011

<0.005<0.005 20110501 AS-361VA 02/11/2011

<0.005<0.004 20110502 AS-7 UH 02/12/2011

<0.006<0.005 20111035 AS-1PG 05/14/2011

<0.006<0.004 20111036 AS-361VA 05/14/2011

<0.005<0.006 20111037 AS-7 UH 05/14/2011

<0.005<0.004 20111441 AS-1PG 08/13/2011

<0.001<0.001 20111442 AS-361VA 08/13/2011

<0.001<0.001 20111443 AS-7 UH 08/13/2011

<0.001<0.00120111816AS-1PG 11/15/2011

<0.001<0.001 20111817 AS-361VA 11/15/2011

<0.001<0.001 20111818 AS-7 UH 11/15/2011

<0.001<0.001 51 Table 2.1 Sample Type: Thermoluminescent Dosimeters Analysis: Gamma Dose Units: mrem/Qtr Inner Ring-Within General Area of Site Boundary Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Mean M-16 10.4 10.9 11.4 11.7 11.1 M-19 9.2 10.0 9.9 11.7 10.2 M-21 12.1 12.3 13.313.612.8 M-22 9.1 8.8 9.5 10.2 9.4 M-23 7.6 5.7 9.2 10.5 8.2 M-25 NO NO NO 9.2 9.2 M-28 11.0 11.611.413.5 11.9 M-94 9.5 9.9 11.1 12.6 10.8 M-95 6.5 6.7 6.6 7.2 6.8 M-96 6.9 6.4 7.1 7.7 7.0 M-97 6.8 6.6 6.8 7.5 6.9 M-98 11.0 11.4 12.1 12.9 11.8 M-99*11.8 12.9 13.6 13.7 13.0 M-100 10.5 11.5 12.1 9.1 10.8*Location with highest annual mean ND-No Data;TLD inaccessible due to river level Outer Ring-Approximately Three (3)to Five (5)Miles from the Site Station 1st Otr 2nd Otr 3rd Otr 4th Otr Annual Mean M-36 7.6 8.3 8.6 10.0 8.6 M-40 5.4 5.9 5.8 7.7 6.2 M-48 8.7 10.3 10.4 11 10.2 M-49 10.2 12.0 12.3 13.3 11.9 M-50 9.0 10.3 9.4 11.9 10.1 M-5510.811.5 12.0 13.0 11.8 M-57*10.6 12.5 12.3 13.9 12.3*Location with highest annual mean 52 Table 2.2 Sample Type: Thermoluminescent Dosimeters Analysis: Gamma Dose Units: mrem/Qtr Special Interest Areas-Population Centers&Schools Station 1st Ctr 2nd Qtr 3rd Ctr 4th Qtr Annual Mean M-01*11.7 13.1 12.5 12.9 12.6 M-07 10.3 10.710.412.411.0 M-09 9.5 10.6 10.4 11.2 1 M-10 8.7 6.7 9.0 10.4 8.7 M-33 7.8 8.7 8.3 10.0 8.7 M-38 8.9 9.6 10.2 11.4 10.0 M-39 8.2 9.1 10.1 11.2 9.6*Location with highest annual mean Table 2.3 Sample Type: Thermoluminescent Dosimeters Analysis: Gamma Dose Units: mrem/Qtr Special Interest Areas-Control Station M-14 1st Qtr 10.4 2nd Qtr 11.3 3rd Qtr 11.8 4th Qtr 12.0 53 Annual Mean 11.4 Table 3.1 Sample Type: Surface Water Analysis: Gamma Isotopic Units: pCi/L SURFACE WATER SAMPLES (GAMMA)LLD/LIQUID 15 15 30 15 30 15 30 15 15 18 60 15 LAB 10 LOCATION DATE MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 20110143 MR DOWN 0210212011

<10.44<7.06<15.90<9.64<14.35<10.66<12.24<10.21<9.20<9.37<45.01<14.10 20110144 MRUP 0210212011

<7.08<7.36<14.59<9.95<12.74<10.42<7.26<14.34<8.22<11.34<39.48<6.64 20110725 MRUP 05/06/2011

<9.43<11.15<17.29<7.75<12.88<11.16<16.77<14.88<12.14<12.62<37.67<11.92 20110740 MR DOWN 05/11/2011

<6.20<6.75<14.14<5.25<11.81<6.72<11.16<11.97<6.43<6.52<26.41<14.34 20110756 MRDOWN OS/20/2011

<8.83<12.53<19.38<9.84<21.85<5.36<13.54<13.84<10.73<11.99<38.60<11.32 20111161 MRUP 08/11/2011

<9.51<8.38<12.00<9.73<16.47<7.44<11.36<11.84<8.28<7.55<34.11<14.57 20111162 MR DOWN 08/11/2011

<8.72<8.89<20.20<8.83<18.73<11.30<14.75<12.17<7.71<11.23<45.65<7.46 20111534 MRUP 11/08/2011

<5.99<6.55<18.40<7.88<16.10<7.67<14.80<10.50<8.25<7.64<32.20<14.60 20111535 MRDOWN 11/08/2011

<10.40<11.40<23.40<11.60<13.70<9.21<19.80<13.00<7.58<11.80<38.10<4.86 20111536 MRUPGG 11/08/2011

<5.18<6.18<11.50<4.66<15.20<8.42<11.20<7.95<5.90<7.05<32.60<12.60 20111537 MR DOWN GG 11/08/2011

<7.56<9.99<17.00<8.41<19.10<5.99<13.50<13.30<7.84<7.25<38.30<14.80 20111538 MR DOWN DC 11/08/2011

<6.95<9.35<17.10<11.30<28.40<11.70<18.30<13.80<6.68<4.53<42.00<11.60 20111539 MRDOWN DCGG 11/08/2011

<7.42<8.92<12.90<8.49<14.70<9.02<13.30<11.10<6.06<6.41<37.50<13.10"GG"-indicates duplicate sample.*Annual Sample collected during liquid discharge 54 Table 3.2 Sample Type: Surface Water Analysis: Tritium Units: pCi/L SURFACE WATER SAMPLES (TRITIUM)-GGNS LLD 2000 LASlO LOCATION DATE TRITIUM 20110143 MR DOWN 02/02/2011

<504 20110144 MRUP 02/02/2011

<447 20110145 MRDOWN GG 02/02/2011

<511 20110725 MRUP 05/06/2011

<419 20110740 MR DOWN 05/11/2011

<410 20110756 MR DOWN OS/20/2011

<399 20111161 MRUP 08/11/2011

<413 20111162 MR DOWN 08/11/2011

<452 20111534 MRUP 11/08/2011

<627 20111535 MR DOWN 11/08/2011

<620 20111536 MRUP GG 11/08/2011

<627 20111537 MR DOWN GG 11/08/2011

<623 20111538 MR DOWN DC*11/08/2011

<626 20111539 MR DOWN DC*GG 11/08/2011

<626 20110099 OUTFALL 007 01/19/2011 926+/-195 20110218 OUTFALL 007 02/21/2011

<488 20110374 OUTFALL 007 03/21/2011

<414 20110546 OUTFALL 007 04/20/2011

<708 20110641 OUTFALL 007 05/02/2011

<693 20110811 OUTFALL 007 OS/25/2011

<682 20110994 OUTFALL 007 06/27/2011

<426 20111104 OUTFALL 007 07/29/2011 866+/-230 20111245 OUTFALL 007 08/18/2011

<635 20111371 OUTFALL 007 09/20/2011

<649 20111496 OUTFALL 007 10/26/2011

<643 20111672 OUTFALL 007 11/28/2011 12025+/-428 20111765 OUTFALL 007 12/20/2011

<694 20111766 OUTFALL 007 GG 12/20/2011

<692*Annual Sample collected during liquid discharge"GG"-indicates duplicate sample.55 Table 4.1 Sample Type: Groundwater Analysis: Gamma Isotopic Units: pCi/L GROUND WATER SAMPLES (GAMMA)LLD 15 15 30 15 30 15 301515 18 60 15 LABID LOCATION DATE MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 20110459 CONSTWELL1 03/31/2011

<7.60<10.57<14.43<7.93<8.35<11.26<14.39<14.10<9.86<9.99<30.13<14.47 20110460 CONSTWELL3 03/31/2011

<10.69<9.11<13.19<9.42<18.53<7.52<13.58<13.86<8.87<10.40<48.89<17.07 20110461 CONSTWELL4 03/31/2011

<11.36<8.66<10.63<10.05<18.05<11.17<16.43<14.96<9.60<12.15<41.77<10.60 20110462 PGWELL 04/04/2011

<12.18<9.22<18.65<10.15<27.87<11.93<17.80<10.84<10.30<8.46<38.46<7.93 20110991 CONSTWELL1 07/06/2011

<6.74<7.46<13.84<7.53<20.03<8.03<12.47<11.63<7.87<5.88<22.02<13.37 20110992 CONSTWELL3 07/06/2011

<8.79<8.46<15.52<11.45<20.67<9.68<19.38<14.60<5.48<10.07<47.77<11.60 20110993 PGWELL 07/06/2011

<6.20<7.23<11.16<6.90<15.30<9.36<14.56<13.45<8.43<7.99<35.84<13.10 20111404 CONSTWELL1 09/29/2011

<9.39<7.60<19.30<8.49<22.30<8.84<17.40<11.60<7.73<11.30<31.00<12.80 20111405 CONSTWELL3 09/29/2011

<10.50<8.99<16.20<7.70<29.80<9.48<15.60<11.30<7.41<9.11<50.10<12.80 20111406 PGWELL 09/30/2011

<10.80<8.96<16.60<8.06<18.00<7.69<16.40<12.70<6.56<11.50<28.50<13.50 20111751 PGWELL 12/19/2011

<13.50<11.10<26.80<8.26<15.70<14.20<22.70<12.70<11.40<11.50<40.00<12.30 20111753 CONSTWELL3 12/19/2011

<8.46<7.84<18.00<11.50<18.20<10.10<18.80<10.80<9.42<10.90<37.00<12.80 56 Table 4.2 Sample Type: Groundwater Analysis: Tritium Units: pCi/L GROUND WATER SAMPLES (TRITIUM)LLD 2000 LASlO LOCATION DATE TRITIUM 20110455 CONSTWELL1 03/31/2011

<387.87 20110456 CONSTWELL3 03/31/2011

<389.46 20110457 CONSTWELL4 03/31/2011

<392.08 20110458 PGWELL 04/04/2011

<350.68 20110991 CONSTWELL1 07/06/2011

<423.23 20110992 CONSTWELL3 07/06/2011

<423.06 20110993 PGWELL 07/06/2011

<420.00 20111404 CONSTWELL1 09/29/2011

<637.47 20111405 CONSTWELL3 09/29/2011

<636.80 20111406 PGWELL 09/30/2011

<642.27 20111751 PGWELL 12/19/2011

<691.55 20111753 CONSTWELL3 12/19/2011

<691.85 20111755 CONSTWELL3 GG 12/19/2011

<692.24 20111756 PGWELLGG 12/19/2011

<694.83"GG"-indicates duplicate sample.57 Table 4.3 Sample Type: Groundwater Analysis: Iodine Units: pCi/L GROUNDWATER SAMPLES (lodine-131)

LLD LASlO 20111752 20111754 LOCATION PGWELL CONSTWELL3 DATE 12/19/2011 12/19/2011 58 1.0 1-131<0.98<0.85 LOCATION Table 5.1 Sample Type: Sediment Analysis: Gamma Isotopic Units: pCi/kg SEDIMENT SAMPLES (GAMMA)LLD LASlO DATE 150 CS-134 180 CS-137 20111808 20111809 SED HAM SEDCONT 12/29/2011 12/29/2011 59<12.40<10.70 17.30+/-8.15<18.60 Table 6.1 Sample Type: Fish Analysis: Gamma Isotopic Units: pCi/kg FISH SAMPLES{GAMMA}LLD LAB 10 LOCATION 20111782 FISHUP 20111783 FISH DOWN 130 130 260 130 260 130 150 DATE MN-54 CO-58 FE-59 CO-60 ZN-65 CS-134 CS-137 12/14/2011

<12.70<10.40<29.10<13.10<17.60<10.50<11.80 12/14/2011

<79.60<58.70<123.00<65.70<128.00<45.60<56.10 60 Table 7.1 Sample Type: Food Products Analysis: lodine-131 and Gamma Isotopic Units: pCi/kg VEGETATION SAMPLES (GAMMA)LLD 60 60 80 LASlO LOCATION DATE 1-131 CS-134 CS-137 20110276 VEG-CONT 03/02/2011

<34.90<32.86<21.20 20110277 VEG-J 03/02/2011

<59.89<29.27<36.07 20110828 VEG-CONT 15/31/2011

<59.80<46.65<44.91 20110829 VEG-J 15/31/2011

<55.72<41.71<38.45 20111122 VEG-J 18/17/2011

<51.30<35.57<40.96 20111199 VEG-CONT 18/17/2011

<55.95<32.60<23.07 20111763 VEG-CONT 12/12/2011

<55.90<19.00<18.80 20111764 VEG-J 12/14/2011

<56.80<26.20<26.30 61 Table 8.1 Sample Type: Special Samples Analysis: Gamma Isotopic Units: pCi/L SPECIAL SURFACE WATER SAMPLES (GAMMA)LLD1515 30 15 30 15 301515 18 60 15 LAB 10 LOCATION DATE MN-54 CO-58 FE-59 CO-6O ZN-65 NB-95 ZR-95 1-131CS-134CS-137 BA-140 LA-140 20110218 OUTFALL 007 02121/2011

<07.47<7.90<20.02<8.14<10.46<9.00<9.45<14.57<9.19<8.47<38.73<12.80 20110374 OUTFALL 007 03/21/2011

<07.34<5.25<12.03<5.67<14.91<7.82<12.10<12.43<7.51<6.92<35.31<14.07 20110998 OUTFALL 007 070/6/2011

<07.53<7.19<14.79<9.17<19.10<8.08<14.32<14.98<6.44<7.72<41.35<12.64 20111371 OUTFALL 007 09/20/2011

<05.28<7.56<16.40<5.25<14.90<10.20<15.20<12.00<7.22<7.85<41.80<14.20 20111765 OUTFALL 007 12120/2011

<06.13<6.34<13.80<7.54<13.50<7.51<12.30<12.10<7.15<6.51<34.00<13.70 20111766 OUTFALL 007GG 12120/2011

<10.70<7.94<16.20<9.62<23.60<9.04<18.10<14.90<6.68<8.93<51.60<13.50"GG"-indicates duplicate sample.62 Table 9.1 Sample Type: Interlaboratory Comparison Analysis: Gross Beta, Tritium, lodine-131 and Gamma Isotopic Analytics Gross Range of E7481-125 Beta in 0.80 to 1.25 Water Nuclide RBS Mean RBS 1-s Ref Lab Ref Lab Resolution RBS/Ref Lab Pass!pCi/L pCi/L ValuepCilLuncertainty Ratio Fail pCi/L Cs-137 199 19 247 4.13 59.8 0.80 Pass Analytics Gross Range of E8137-125 Beta filter 0.80 to 1.25 Nuclide RBS Mean RBS 1-s Ref Lab Ref Lab Resolution RBS/Ref Lab Pass!pCilfilter pCilfilter Value uncertainty Ratio FailpCi/filterpCilfilter Cs-137 84.2 1.41 82.1 1.37 59.9 1.03 Pass Analytics H-3 Range of E8136-125 in water 0.80 to 1.25 Nuclide RBS Mean RBS 1-s Ref Lab Ref Lab Resolution RBS/Ref Lab Pass!pCilL pCi/L Value pCi/L uncertainty Ratio Fail pC ilL H-3 9060 419 9010 151 59.7 1.01 Pass Analytics Gamma Range of E8138-125 Filter 0.80 to 1.25 Nuclide RBS Mean RBS 1-s Ref Lab Ref Lab Resolution RBS/Ref Lab Pass!pCilfilter pCi/fiIter Value Uncertainty Ratio Fail pCilfilter pCilfilter Ce-141 58.2 2.80 59.6 0.995 59.7 0.98 Pass Cr-51 188 11.9 202 3.38 59.8 0.93 Pass Cs-134 94.3 4.20 115 1.91 60.2 0.82 Pass Cs-137 101 4.20 102 1.70 60 0.99 Pass Co-58 83.9 3.90 87.1 1.45 60.1 0.96 Pass Mn-54 134 4.00 135 2.25 60 0.99 Pass Fe-59 52.1 2.60 49.0 0.818 59.9 1.06 Pass Zn-65 157 6.40 161 2.69 59.9 0.97 Pass Co-60 134 4.50 140 2.34 59.8 0.95 Pass 63 Analytics Gamma Range of E8139-125 Soil 0.80 to 1.25 Nuclide RBS Mean RBS 1-s Ref Lab Ref Lab Resolution RBS/Ref Lab Pass!pCi/g pCi/g Value pCi/g Uncertainty Ratio Fail pCilg Ce-141 0.174.0110 0.168.00280 60 1.04 Pass Cr-51 0.556.0450 0.569.00950 59.9 0.98 Pass Cs-134 0.271.0110 0.322.00580 55.5 0.84 Pass Cs-137 0.347.0170 0.375.00625 60 0.93 Pass Co-58 0.221.0110 0.245.00409 59.9 0.90 Pass Mn-54 0.357.0100 0.379.00633 59.9 0.94 Pass Fe-59 0.142.00100 0.138.00230 60 1.03 Pass Zn-65 0.423.0350 0.454.00758 59.9 0.93 Pass Co-60 0.361.0180 0.395.00659 59.9 0.91 Pass Analytics Gamma in Range of E7480-125 Water 0.80 to 1.25 Nuclide RBS Mean RBS 1-s Ref Lab Ref Lab Resolution RBS/Ref Lab Pass!pCi/LpCi/L Value Uncertainty Ratio Fail pCilL pCi/L 1-131 94.0 17.0 88.7 1.48 59.9 1.06 Pass Ce-141 n/an/an/a n/a n/a n/a n/a (1)Cr-51 599 91.0 566 9.45 59.9 1.06 Pass Cs-134 164 11.0 1712.8659.8 0.96 Pass Cs-137 223 17.0 210 3.50 60 1.06 Pass Co-58 216 15.0 221 3.69 59.9 0.98 Pass Mn-54 255 13.0 241 4.02 60.0 1.06 Pass Fe-59 188 20.0 183 3.06 59.8 1.03 Pass Zn-65 309 29.0 291 4.87 59.8 1.06 Pass Co-60 284 16.0 270 4.51 59.9 1.05 Pass Analytics Gamma in Range of E7483-125 Milk 0.80 to 1.25 Nuclide RBS Mean RBS 1-s Ref Lab Ref Lab Resolution RBS/Ref Lab Pass!pCi/L pCi/L Value pCi/L uncertainty Ratio Fail pCilL 1-131 91.0 16.0 90.2 1.51 59.7 1.01 Pass Ce-141 n/a n/a n/a n/a n/a n/a n/a (1)Cr-51 532 76.0 566 9.45 59.9 0.94 Pass Cs-134 160 11.0 171 2.86 59.8 0.93 Pass Cs-137 216 10.0 210 3.50 60 1.03 Pass Co-58 206 13.0 221 3.69 59.9 0.93 Pass Mn-54 237 12.0 241 4.02 60.0 0.98 Pass Fe-59 192 18.0 183 3.06 59.8 1.05 Pass Zn-65 304 22.0 291 4.87 59.8 1.04 Pass Co-60 265 16.0 270 4.51 59.9 0.98 Pass 64 (1)Ce-141 was unavailable at the reference lab for the mixed gamma matnx for the 4 quarter milk and water.Analytics 1-131 Range of E7482-125 cartridge 0.80 to 1.25 Nuclide RSS Mean RSS 1-s Ref Lab Ref Lab Resolution RSS/Ref Lab Pass!pCVeach pCi/each Value uncertainty Ratio Fail pCi/each pCVeach 1-131 90.0 8.00 89.7 1.50 59.8 1.00 Pass ILII 100%of interlaboratory crosscheck results were within control limits for accuracy and 100%were within control limits for precision.

Ref Lab values are the"true" values used for comparison.

65 Table 9.1 Sample Type: Interlaboratory Comparison Analysis: Environmental Dosimeters PERCENTAGE OF INDIVIDUAL DOSIMETERS THAT PASSED EDC INTERNAL CRITERIA JANUARY-DECEMBER 2011 (1)Dosimeter.

TYPEJ Panasonic Environmental Number Tested 72%Passed Bias Criteria 100%passed*Precision Criteria 100 (1)Environmental dosimeter results are free in air.Bias Limit-+/-15%Precision Limit-+/-12.8%66