GNRO-2008/00018, Annual Radiological Environmental Operating Report (AREOR) for Period January 1, 2007 Through December 31, 2007

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Annual Radiological Environmental Operating Report (AREOR) for Period January 1, 2007 Through December 31, 2007
ML081210455
Person / Time
Site: Grand Gulf Entergy icon.png
Issue date: 04/29/2008
From: Larson M
Entergy Operations
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
GNRO-2008/00018
Download: ML081210455 (69)
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Text

  • ~Entergy Entergy Operations, Inc.

100 Box 750 F'o,t G'i)son, MS 3~)150 Tol 601 4372800

.GNRO-2008/00018 April 29, 2008 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Attention: Document Control Desk

Subject:

Grand Gulf Nuclear Station (GGNS) 2007 Annual Radiological Environmental Operating Report (AREOR)

Grand Gulf Nuclear Station Docket No. 50-416 License No. NPF-29 Ladies & Gentlemen:

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 1,2007 through December 31,2007.

This letter does not contain any commitments. If you have questions or require additional information concerning these reports, please contact Mr. Richard Scarbrough (601) 437-6316, or this office at (601) 437-6685.

Yours truly, Michael J. Larson Acting Licensing Manager MJL:mjl attachment: 2007 Annual Radiological Environmental Operating Report cc: (See Next Page)

GNRO-2008-00018 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 (w/2) 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-4005 U. S. Nuclear Regulatory Commission ATTN: Mr. Jack N. Donohew, Jr., NRRlAPRO/

DORL (w/2)

ATTN: ADDRESSEE ONLY ATTN: U. S. Postal Delivery Address Only Mail Stop OWFN/O-8G14 Washinaton, DC 20555-0001

ENTERGY OPERATIONS, INC.

GRAND GULF NUCLEAR STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT January 1, 2007-December 31, 2007

_____~::s~-.t--- /---=:f .2-1' o~

Prepared By Approved By

TABLE OF CONTENTS

SUMMARY

6

1.0 INTRODUCTION

11 1.1 Radiological Environmental Monitoring Program 11 1.2 Pathways Monitored 11 1.3 Land Use Census 12 2.0 INTERPRETATION AND TRENDS OF RESULTS 24 2.1 Air Particulate and Radioiodine Sample Results 24 2.2 Thermoluminescent Dosimetry (TLD) Sample Results 24 2.3 Water Sample Results 26 2.4 Sediment Sample Results 26 2.5 Milk Sample Results 27 2.6 Fish Sample Results 27 2.7 Food Product Sample Results 27 2.8 Land Use Census Results 28 2.9 Interlaboratory Comparison Results 35 3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

36 3.1 Program Results Summary 36 2

LIST OF TABLES TABLE 1.1 RADIeLOGfCAlENVIRONMENTAl. SAMPLING PROGRAM 13 TABLE 2.1 LAND USE CENSUS RESULTS 30 TABLE 3.1 RADIOLOGICAL ENVIRONMENTAL MONITORING 37 PROGRAM

SUMMARY

3

LIST OF FIGURES FIGURE 1-1 EXPOSURE PATHWAYS 21 FIGURE 1-2 SAMPLE COLLECTION SITES - NEAR FIELD 22 FIGURE 1-3 SAMPLE COLLECTION SITES - FAR FIELD 23 FIGURE 2-1 TLD READINGS 25 4

LIST OF ATTACHMENTS ATTACHMENT 1 RADIOLOGICAL MONITORING REPORT 42

SUMMARY

OF MONITORING RESULTS 5

Summary The Annual Radiological Environmental Operating Report presents data obtained through analyses of environmental samples collected for Grand Gulf Nuclear Station's (GGNS)

Radiological Environmental MOflitoriflg-Prngram (REMP) for the period January 1, 2007 through December 31, 2007. This report fulfills the requirements of GGNS Technical Specification 5.6.2.

To supplement the REMP, GGNS personnel collected duplicate surface water, ground water, vegetation, sediment and fish samples during the reporting period. Special samples collected during the reporting period included vegetation and surface water. GGNS did not detect any plant-related radionuclides in these samples.

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 is occurring within five miles of the plant.

The REMP includes sampling indicator and control locations within an I8-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 the presence of only naturally occurring 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. They compared results of indicator locations with control locations and previous studies, and concluded that overall no significant relationship exists between GGNS operation and effect on the plant environs. Their review of current year data, in many cases, showed undetectable radiation levels in the environment and near background level in significant pathways associated with GGNS.

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Harmful Effects or Irreversible Damage The REMP monitoring did not detect any harmful effects or evidence of irreversible damage in the current year. TherefOre, no analysis or planned coorse-ef aetien tttallevi-atepri}blems was necessary.

Reporting Levels GGNS' review indicates that no samples equaled or exceeded reporting levels for radioactivity concentration in environmental samples, as outlined in aDCM Specifications Table 6.12.1-2 when averaged over any calendar quarter, due to GGNS effluents. Therefore, 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 25th Chinese nuclear test explosion in 1980, and the radioactivity plume release due to reactor core degradation at the Chemobyl Nuclear Power Plant in 1986.

Comparison to Federal and State Programs GGNS personnel compared REMP data to federal and state monitoring programs as results became available. Historically, the programs used for comparison have included the U.S.

Nuclear Regulatory Commission (NRC) TLD Direct Radiation Monitoring Network and the Mississippi State Department of Health (MSDH), Division of Radiological Health.

The NRC TLD Network Program was discontinued in 1998. Historically these results compared favorably to those from the GGNS REMP. GGNS TLD results remain similar to the historical average and continue to verify that plant operation is not affecting the ambient radiation levels in the environment.

The MSDH and the GGNS REMP entail similar radiological environmental monitoring program requirements. These programs include concurrent air sampling and splitting or sharing sample media such as water, sediment, fish and food products. Both programs have obtained similar results over previous years. The results of \1SDH's monitoring program for the reporting period compared favorably with the GGNS REMP and did not indicate elevated levels of radiation or radioacti vity build-up attributed to plant operations.

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Sample Deviations

  • Milk The REMP did nmincludemilk sampling within five miles (8 km) of GGNS in the current year due to unavailability. aDCM Specifications require collection of milk samples if available commercially within 8 km (5 miles) of the plant. GGNS personnel collected vegetation samples to monitor the ingestion pathway, as specified in aDCM Specifications Table 6.12.1-1, because of milk unavailability.
  • Required Lower Limit of Detection (LLD) Values LLDs during this reporting period were within the acceptable limits required by the aDCM specifications.

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  • Air Samples The following air sample locations had reduced run times due to weather-related outages.

As described in footnote (a) to ODCM Specification Table 6.12.1-1, deviations from the required sampling schedule are pennitted due to malfunction of sampling equipment-and other legitimate reasons.

Out-of-Sample Date In Date Out RunTime service Comments Location hours hours AS-7 UH 04/10107 04/17/07 165.55 2.98 Power Outage AS-1 PG 04/10107 04/17/07 33.68 141.65 Power Outage AS-361VA 06/26/07 07/03/07 106.87 62.53 Power Outage AS-7 UH 07103/07 07/10/07 162.56 3.44 Power Outage AS-361VA 07/03/07 07/10/07 158.16 7.96 Power Outage AS-1 PG 09/11/07 09/18/07 60.08 106.25 Power Outage AS-361VA 10/23/07 10/30/07 30.10 136.98 Power Outaqe Based on the sample collection period reductions, aIr samples were collected the following percentages of the available time:

AS-1 PG 97.17%

AS-361VA 97.63%

AS-7 UH 99.93%

  • Missed Samples After deploying the second quarter environmental TLD's, it was discovered that the deployed set had received a significant traIlsit dose. This dose proved to render the deployed TLD's useless and replacements were sent to GGNS by the vendor. This event contributed to a period of 20 days where the direct radiation pathway was not monitored between the removal of the first quarter TLD' s and the deployment of the replacement second quarter TLD' s.
  • Unavailable Results GGNS received analytical results in adequate time for inclusion m this report. In addition, GGNS' review identified no missing results.

Program Modifications During this reporting period, six supplemental TLD locations [f<mnerly S-2 through S-7]

were incorporated into the REMP. S-7[~1-1 00] replaced monitoring location M-17 due to safety concerns associated with accessibility. Offsite Dose Calculation Manual revision 35 was issued September 2007 to incorporate the program modification.

9

Attachments Attachment I contains results of TLD, air, water, sediment, fish, food products and special samples collected. TLDs were analyzed by AREVA. All remaining samples were analyzed by River Bend Station's (RBS) Environmtmtal Laboratory. Attaclunnt 1 also contains RBS' results from participation in the interlaboratory comparison program.

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1.0 Introduction 1.1 Radiological Environmental Monitoring Program GGNS established the REMP to ensure that plant operating controls properly function to minimize any associated radiation endangerment to human health or the environment. The REMP is designed for:

  • Analyzing important pathways for anticipated types and quantities of radionuclides released into the environment.
  • Considering the possibility of a buildup of long-lived radionuclides in the environment and identifying physical and biological accumulations that may contribute to human exposures.
  • Considering the potential radiation exposure to plant and animal life III the environment surrounding GGNS.
  • Correlating levels of radiation and radioactivity III the environment with radioactive releases from station operation.

1.2 Pathways Monitored The airborne, direct radiation, waterborne and ingestion pathways, as seen in Figure I-I, are monitored as required by GGNS aDCM Table 6.12.1-1. A description ofthe 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.

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1.3 Land Use Census GGNS personnel conduct a land use census biannually, as required by aDCM 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 five miles of GGNS that would require modifications to the REMP or the aDCM The most important criteria during this census are to determine location in each sector of the nearest:

1) Residence
2) Animal milked for human consumption 2 2
3) Garden of greater than 50 m (500 ft ) producing broadleafvegetation.

When performed, GGNS personnel conduct the land use census by:

  • 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.

  • ldentifYing 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.

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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 1 sample close to the SITE BOUNDARY having the highest AS-7 UH (Sector H, Radius 0.5 Miles) -

South-southeast of GGNS at the IBEW Continuous sampler operation Radioiodine Cannister 131; I with sample collection per 7 7 days calculated annual average Union Hall.

days or as required by dust groundlevel D/Q.

loading, whichever is more Particulate Sampler - Gross frequent beta radioactivity following filter change, composite (by location) for gamma isotopic; 92 days Radioiodine and Particulates 1 sample from the vicinity of a AS-1 PG (Sector G, Radius 5.5 Miles) -

community having the highest Southeast of GGNS at the Port Gibson City calculated annual average Bam.

groundlevel D/Q.

Radioiodine and Particulates AS-3 61VA (Sector B, Radius 18 Miles)-

1 sample from a control location 15 - North-northeast of GGNS on Hwy 61, 30 km (10 - 20 miles) distance. North of the Vicksburg Airport.

Direct TLDs Radiation An inner ring of stations in the M-16 (Sector A, Radius 0.9 Miles) - 92 days Gamma dose; 92 days general areas of the SITE Meteorological Tower.

BOUNDARY.

M-17 (Sector C, Radius 0.5 Miles) -

South Side, Grand Gulf Road.

M-19 (Sector E, Radius 0.5 Miles) -

Eastern SITE BOUNDARY Property line, North-northeast of HWSA.

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Table 1.1 Radiological Environmental Sampling Program Exposure Requirement i Sample Point Description, Sampling and Type and Frequency I

Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs Radiation An inner ring of stations in the M-21 (Sector J, Radius 0.4 Miles) - Near 92 days Gamma dose; 92 days general areas of the SITE Former Training Center Building on Bald BOUNDARY. Hill Road.

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) -

Former Glodjo Residence.

M-94 (Sector R, Radius 0.8 Miles) -

Sector R Near Meteorological Tower.

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Table 1.1 Radiological Environmental Sampling Program Exposure I Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses I

Direct TLDs Radiation An inner ring of stations in the M-95 (Sector F, Radius 0.5 mi) - Spoils 92 days Gamma dose; 92 days general areas of the SITE Area, fence of old storage area, near BOUNDARY. entrance gate M-96 (Sector B, Radius 0.7 mi.) - North Gate Fence M-97 (Sector 0, Radius 0.8 mi.) - Grand Gulf Road entrance gate to spoils area M-98 (Sector H, Radius 0.5 mi.) - Bald Hill Road, across form Union Hall in curve M-99 (Sector K, Radius 0.4 mi.) - North Fence of old Ball Field near utility pole M-100 (Sector C, Radius 0.6 mi.) - Grand Gulf Road, across from L. Frazier TLDs An outer ring approximately 3 to 5 M-36 (Sector P, Radius 5.0 Miles) -

miles from the site. Curve on HW 608, Point Nearest GGNS at Power Pole.

M-40 (Sector M, Radius 2.3 Miles) -

Headly Drive, Near River Port Entrance.

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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

,i Direct TLDs Radiation An outer ring approximately 3 to 5 M-48 (Sector K, Radius 4.8 Miles) - 0.4 Miles 92 days Gamma dose; 92 days miles from the site. South on Mont Gomer Road 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.

i TLDs 8 stations in special interest areas M-01 (Sector E, Radius 3.5 Miles) - Across the such as population centers, nearby road from lake Claiborne Entry Gate. (Special residences, schools, and in 1 or 2 Interest) areas to serve as control stations.

M-07 (Sector G, Radius 5.5 Miles) - AS-1 PG, Port Gibson City Bam. (Special Interest)

M-09 (Sector 0, 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 Radiation 8 stations in special interest areas M-14 (Sector B, Radius 18.0 Miles) - AS 92 days Gamma dose; 92 days such as population centers, nearby 61VA, Hwy 61, North of Vicksburg Airport.

residences, schools, and in 1 or 2 (Control) areas to serve as control stations M-33 (Sector P, Radius 12.5 Miles) -

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) - S1.

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 Frequency Of Analyses Waterborne Surface Water 1 sample upstream. MRUP (Sector R, Radius 1.8 Miles) - At least 4500 92 days Gamma isotopic and tritium ft upstream of the GGNS discharge point into the analyses; 92 days Mississippi River to 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 Liquid MRDOWN (Sector P, Radius 1.3 Miles) - 366 days Gamma isotopic and tritium Radwaste Discharge. Downstream of the GGNS discharge point into the analyses; 366 days Mississippi River near Radial Well NO.5.

1 sample from Outfall 007 OUTFALL 007 (Sector N, Radius 0.2 Miles) - Storm 31 days Tritium; 31 days 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 Samples from 2 sources. PGWELL (sector G, Radius 5.0 Miles) - 366 days Gamma isotopic and tritium Port Gibson Wells - Take from distribution analyses; 366 days 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 1 sample from downstream area. SEDHAM (Sector N, Radius 1.6 Miles) - 366 days Gamma isotopic; 366 days Downstream of the GGNS discharge point in the Mississippi River near Hamilton Lake outlet.

1 sample from upstream area. SEDCONT (Minimum of 100 yds) -

Upstream of the GGNS discharge point in the Mississippi River.

Ingestion Milk 1 sample from milking animals within 8 Currently, no available milking animals within 92 days when required Gamma isotopic and 1-131; 92 km if milk is available commercially. 8km ofGGNS.

days 1 control sample (only if indicator ALCONT (sector K, Radius 10.5 Miles) -

exists) >8 km if milk is available. Located South-southwest of GGNS at Alcom State University.

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

Food Products 1 sample of broadleaf vegetation VEG-J (Sector J, Radius 0.4 Miles) - South 92 days when available Gamma isotopic ana 1-131; 92 grown in one of two different offsite of GGNS near former Training Center on days locations with highest anticipated Bald Hill Road.

annual average ground level D/Q if milk sampling is not performed.

1 sample of similar vegetation grown VEG-CONT (Sector K, Radius 10.5 Miles)-

15 - 30 km distant if milk sampling is Alcorn State University south-southwest of not performed. GGNS when available, otherwise a location 15-30 km distant.

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FIGURE I-I Exposure Pathways

_ _. , A"".... ~ -= -¢c-=- --=--

-=""""" -=- - ~ -

21

FIGURE 1-2 SAMPLE COLLECTION SITES - NEAR FIELD FIGURE 3.Q-l CcAlection Site Locatiorrs Q-4 Mile /voo. Map LEGEND

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o ~WaJtr

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22

FIGURE 1-3 SAMPLE COLLECTION SITES - FAR FIELD

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... CoI8cIOO Site

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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 or Iodine-131 in the radioiodine cartridges during the reporting period, as has been the case in previous years. The REMP detected radioactivity in this pathway attributable to other sources twice. These include the 25th Chinese nuclear test explosion in 1980, and the radioactive plume release due to reactor core degradation at Chernobyl Nuclear Power Plant in 1986. Therefore, the airborne exposure pathway has been unaffected by the operation of GGNS and airborne concentrations continue to be at background levels.

Table 3.1, which includes gross beta concentrations, provides a comparison of the indicator and control means and ranges, further emphasizes that the airborne pathway continues to remain at background levels. In the absence of plant-related gamma radionuclides, gross beta activity is attributed to naturally occurring radionuclides.

Consistent trends are present for control and indicator locations. This further supports the presence of naturally occurring activity.

2.2 Thermoluminescent Dosimetry Sample Results GGNS calculates dose by subtracting shield readings from control and indicator location readings and reports measured dose as net exposure normalized to 92 days.

GGNS relies on comparison of the indicator locations to the control location as a measure 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.

GGNS' 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 operations had no significant impact on ambient radiation levels during the reporting period.

During this reporting period, six supplemental TLD locations [formerly S-2 through S-7] were incorporated into the REMP. S-7[M-100] replaced monitoring location M-17 due to safety concerns associated with accessibility. Additional monitoring at five locations serves to characterize the effect of hydrogen injection. described further in the following paragraph.

TLD Location S-2 rM-95] Sector F, 0.5 mi S-3 [M-96] Sector B. 0.7 mi.

S-4 rM-971 Sector D, 0.8 mi.

S-5 rM-981 Sector H, 0.5 mi.

S-6 [M-99] Sector K, 0.4 mi.

I S-7 [M-IOO] Sector C. 0.6 mi. I!

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

With the exception of TLD locations M-21 (Sector J, 0.4 miles), M-98 (Sector H 0.5 miles and M-99 (Sector K, 0.4 miles) direct radiation levels continue to remain at or near background. The dose rate at these locations is a result of increased Nitrogen-16 levels associated with hydrogen injection as discussed above. Dose rates at locations M-21 [3.2 millirem per quarter], M-98 [1.6 millirem per quarter] and M-99 [3.7 millirem per quarter] above Control location M-14 (sector B, 18.0 miles) remain well below the limitations of 10 CFR 20.1301 (a)(2) and 10CFR 20. 1302(b)(2)(ii).

Figure 2-1 mRlqtr 2002-2007 TLO Readings 20,.-------------------------------,

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In 2007 the site utilized a different vendor for TLD processing. The 2007 TLDs showed an average increase of 13%. This increase was distributed across control, near site and far site locations and is attributed to differences in dosimeter processing.

25

2.3 Water Sample Results Surface water samples were collected from three indicator and one control location 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 routine, previously monitored gaseous effluents.

As a result, tritium levels below the minimum detection level requirement are occasionally observed. When detected, Tritium was measured at an average concentration of 1027 +/- 264 pCi/L in the Outfall 007 (indicator) location.

In addition to the tritium samples required by the REMP, four special surface water samples for gamma 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, GGNS concluded that plant operations had no significant impact on this pathway during the reporting period.

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, GGNS concluded that plant operations had no significant impact on this pathway during the reporting period.

2.4 Sediment Sample Results Sediment samples were collected from two ODCM Specification 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) and downstream (indicator) locations.

Based on review of results and historical data, GGNS concluded that plant operations had no significant impact on this pathway during the reporting period.

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2.5 Milk Sample Results GGNS personnel did not collect milk samples 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, it is concluded GGNS' operation had no impact on this pathway.

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 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 Sample Results Food product samples were collected from control and indicator locations when available and analyzed for gamma emitting radionuclides. GGNS did not detect any plant related gamma emitting radionuclides in vegetation samples during the reporting period. Nuclides detected previously at the control and indicator locations are attributed to the Chemobyl release and atmospheric weapons testing. These results indicate that this pathway has not been affected by plant operations.

Two samples of vegetation were collected at an onsite location to supplement the REMP. GGNS did not detect any plant related gamma emitting radionuclides in this vegetation sample during the reporting period.

27

2.8 Land Use Census Results Results from the Land Use Census performed April 10-12, 2006 are included in this report.

Methods utilized include: visual surveys, door to door surveys, telephone interviews, GPS, Aerial Photography, and consultation with the local county agent concerning dairy production in Claiborne County.

During the survey the following questions were asked:

I). Nameofoccupant 2). Address 3). Number of people residing at residence 4). Age group of occupants 5). Any farm animal raised for human consumption 6). Any dairy production 7). Maintain a garden Changes from the previous Land Use Census were evaluated in accordance with GGNS surveillance 06-EN-SOOO-0-0002. The differences were compared to the locations and assumptions used in calculations for compliance with the Offsite Dose Calculation Manual (ODCM), LCO 6.11.6. It was determined that the locations and assumptions currently used in ODCM are more conservative than any of the changes. Other determinations from the previous Land Use Census results are:

  • The child age group with the highest dose commitment is in Sector A (North) at 1.78 miles, GGNS ODCM calculations currently uses the maximum calculated dose from either Sector L (Southwest) at 0.89 miles or Sector C (Northeast) at 0.67 miles. Doses calculated at Sector A would be lower.
  • One location recorded as occupied in the previous land use census is now unoccupied, sector E (East) at 0.83 miles.
  • Because of downwind location and/or distance from the site, in no case will the occupancy of an existing unoccupied residence cause any ODCM critical receptor calculation results to be less conservative.
  • No additional sampling locations are required as the onsite garden/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 Sector H, J, and K). GGNS uses the Grass/Cow/Meat pathway.

28

  • The milk pathway does not need to be activated, no commercial dairy production is occurring within 5 miles. Resident in Sector F occasionally milks cows for consumption if the cow is producing too much milk for the calf. This is not commercial dairy production as referenced by aDeM Table 6.12.1-1; therefore, the milk pathway does not need to be activated.
  • Sectors M, N, P, and Q are remote areas in which the primary use is hunting. Area was surveyed by vehicle and aerial photographs. Also, all areas in Louisiana within 5 miles belong to the "Winter Quarters" exclusive hunting club. From the previous census, personnel at entrance gate were interviewed and responded, "No permanent residence or gardens, the area is posted".
  • Gardens, regardless of size, were included in the census data.

29

Table 2.1 Land Use Census Results Parameter Sector A

  • Sector B Sector C Sector D I. Nearest Occupied a. Distance (mile) 0.98 0.83 0.67 2.57 Residence b. Number of Occupants 2 2 2 6
c. Degrees from true north 354.0 15.1 42.1 60.5 II. Nearest Unoccupied a. Distance (mile) 0.94 None None None Residence (closer than occupied residence)

III. Nearest Milk Animal a. Distance None None None None IV. Nearest Broadleaf a. Distance (mile) 1.78 1.52 0.67 2.86 Garden b. Garden size (ft2)  : :=: 1200  :::=:4050 ~ 1250 ~500

c. Degrees from true north 352.2 21.9 42.1 59.7 V. Census Comparison a. Is nearest occupied residence in same location as last census? Yes Yes Yes Yes
b. Is nearest milk animal in same location as last census? N/A N/A N/A N/A
c. Is nearest broadleaf garden in same location as last census'? No Yes Yes Yes
  • Change from last census, see attached table of Land Use Census Changes 30

Table 2.1 Land Use Census Results Parameter Sector E

  • Sector F
  • Sector G Sector H I. Nearest Occupied a. Distance (mile) 0.89 2.25 2.10 1.11 Residence b. Number of Occupants 3 2 3 6
c. Degrees from true north 86.9 101.5 129.7 152.5 II. Nearest Unoccupied a. Distance (mile) 0.83 None 1.93 1.08 Residence (closer than occupied residence)

III. Nearest Milk Animal a. Distance None None None None IV. Nearest Broadleaf a. Distance (mile) 0.89 4.05 3.81 1.11 Garden b. Garden size (fi2)  ::::::1000  ::::::50  ::::::1600  : : : 500

c. Degrees from true north 86.9 114.3 129.1 152.5 V. Census Comparison a. Is nearest occupied residence in same location as last census? No Yes Yes Yes
b. Is nearest milk animal in same location as last census? N/A N/A N/A N/A
c. Is nearest broadleaf garden in same location as last census? Yes No Yes Yes
  • Change from last census, see attached table of Land Use Census Changes 31

Table 2.1 Land Use Census Results Parameter Sector J Sector K

  • Sector L* Sector M I. Nearest Occupied a. Distance (utile) 3.16 2.23 0.89 None Residence b. Number of Occupants 2 1 2
c. Degrees from true north 174.3 196.9 219.7 II. Nearest a. Distance (mile) None None None None UnoccupiedResidence (closer than occupied residence)

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 (ft2) ~500 ~2500 ~ 300

c. Degrees from true north 174.3 196.9 219.7 V. Census Comparison a. Is nearest occupied residence in same location as last census? Yes Yes Yes N/A
b. Is nearest milk animal in same location as last census? N/A N/A N/A N/A
c. Is nearest broadleaf garden in same location as last census? Yes Yes Yes N/A
  • Change from last census, see attached table of Land Use Census Changes 32

Table 2.1 Land Use Census Results Parameter Sector N Sector P Sector Q Sector R I. Nearest Occupied a. Distance (mile) None None None 1.11 Residence b. Number of Occupants 2

c. Degrees from true north 346.1 II. Nearest a. Distance (mile) 1.61 4.83 3.5 None UnoccupiedResidence (closer than occupied residence)

III. Nearest Milk Animal a. Distance None None None None IV. Nearest Broadleaf a. Distance (mile) None None None 1.46 Garden b. Garden size (ft 2) "",4000

c. Degrees from true north 342.9 V. Census Comparison a. Is nearest occupied residence in same location as last census? N/A N/A N/A Yes
b. Is nearest milk animal in same location as last census? N/A N/A N/A N/A
c. Is nearest broadleaf garden in same location as last census? N/A N/A N/A Yes
  • Change from last census, see attached table of Land Use Census Changes 33

Land Use Census Changes SECTOR PARAMETER I Reason for Chan~e A Nearest Occupied i Name Change Residence A Nearest Garden New nearest garden Nearest Occupied E Moved out from 0.83 miles to 0.89 miles Residence E Unoccupied Residence House unoccupied E Garden Size More accurate size, now two :::::500 ft2 gardens F Nearest Garden New nearest garden K Garden Size More accurate size L Garden Size More accurate size 34

2.9 Interlaboratory Comparison Results River Bend Station (RBS) Environmental Laboratory analyzed interlaboratory comparison samples to fulfill the requirements of the aDeM Specifications 6.12.1. , Radiological Environmental Monitoring Report, contains these results in Table 9.1. GGNS' review of RBS' interlaboratory comparison indicated that 98%

of results wcre within control limits for accuracy, and 100% of results were within control limits for precision.

35

3.0 Radiological Environmental Monitoring Program Summary 3.1 Program Results Summary Table 3.1 summarizes the REMP results. GGNS personnel did not use values reported as less than the lower limit of detection <<LLD) when determining ranges and means for indicator and control locations.

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 2007 Sample Type Type & Number LLDb Indicator Locations Location with Highest Annual Mean Control Locations Number of (Units) of Analyses a Mean (F) c Mean (F) c Nonroutine

[Range 1 [Range 1 Results e Mean (F) c Location d I Ran~e 1 Air Particulates GB 156 0.01 0.027 ( 104/104 ) AS-l PG 0.028 ( 52 1 52 ) 0.026 ( 52 152 ) 0 (pCilm3 ) [0.011 - 0.061 ] (Sector G, 5.5 mi ) [0.014-0.061 ] [ 0.010 - 0.046 ]

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 <LLD N/A N/A <LLD 0 (pCilm3 )

Inner Ring TLDs Gamma 59 (f) 10.7 ( 59/59 ) M-99 15.3(4/4) N/A 0 (mRlQtr) [6.9-16.3 ] (Sector K, 0.4 mi.) [ 14.6-16.3]

Outer Ring TLDs Gamma 28 (f) 10.5 ( 28 ! 28 ) M-57 12.2 ( 4 /4) N/A 0 (mRJQtr) [7.4-12.8] (Sector F, 4.5 mi.) [ 11.8-12.8]

Special Interest TLDs Gamma 28 (f) 9.8 ( 28 ! 28 ) M-Ol 12.2(4/4) N/A ()

(mRJQtr) [ 7.7 13.3 ] (Sector E, 3.5 mi. ) [ 11.4-13.3 ]

Control TLDs Gamma 4 (f) N/A N/A N/A 11.6(4/4) ()

(mRlQtr) [ 11.0-12.8]

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 2007 Sample Type Type & Number LLDb Indicator Location Location with Highest Annual Mean Control Locations Number of (Units) of Analyses a Mean (F) c Mean (F) c Nonroutine I Range) I Range) Results e Mean (F) c Location d I Ran~e I Surface Water H-3 24 3000 1027(4'19) Outfall 007 1027 (4/ 12 ) <LLD 0

( pCi/I ) [ 606 - 2115 ] ( Sector N, Radius 0.2 mi.) [ 606 - 2115 ]

GS 12 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 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 2007 Sample Type Type & Number LLDb Indicator Locations Location with Highest Annual Mean Control Locations Number of (Units) of Analyses a Mean (F) c Mean (F) c Nonroutine (Range I (Range I Results e Mean (F) c Location d r Ran2e 1 Groundwater H-3 2 2000 <LLD N/A N/A <LLD 0

( pCill )

1-131 2 1 <LLD N/A N/A <LLD 0 GS 4 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 4 (pCilkg)

Cs-134 150 <LLD N/A N/A <LLD 0 Cs-137 180 <LLD j\'/A 01/A <LLD 0 39

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 2007 Sample Type Type & Number LLDb Indicator Location Location with Highest Annual Mean Control Locations Number of (Units) of Analyses a Mean (F) c Mean (F) c Nonroutine I Range J I Range I Results e Mean (F) c Location d I Rane:e 1 Fish GS 2

( pCi/kg) 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 <Lill 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 Products 1-131 10 60 <LLD N/A N/A <Lill 0 (pCi/kg )

GS 10 Cs-134 60 <LLD N/A N/A <LLD 0 Cs-137 80 <LLD N/A N/A <LLD 0 Vegetation 1-131 2 60 <LLD N/A N/A <LLD 0 (Special) pCi/Kg GS 2 Cs-134 60 <LLD N/A N/A <LLD 0 Cs-137 80 <LLD N/A N/A <LLD 0 40

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 2007 Sample Type Type & Number LLDb Indicator Location Location with Highest Annual Mean Control Locations Number of (Units) of Analyses a Mean (F) c Mean (F) c Nonroutine I Range] I Range] Results e Mean (F) c Location d f Range I Surface Water GS 4 (Special) 1-131 15 <LLD N/A N/A <LLD 0 (pCi/I) 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 a GB = Gross beta; 1-131 = lodine-131; H-3 = Tritium; GS = Gamma scan.

b LLD = Required lower limit of detection based on GGNS 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.

f LLD is not defined in GGNS ODCM Table 6.12.1-3.

41

Attachment 1 Radiological Monitoring Report Summary of Monitoring Results 42

TABLE OF CONTENTS TABLE 1.1 AIR PARTICULATE FILTER GROSS BETA AND 44 CHARCOAL CARTRIDGE IODINE-131 TABLE 1.2 AIR PARTICULATE FILTER GAMMA 53 TABLE 2.1 THERMOLUMINESCENT DOSIMETERS 54 TABLE 2.2 THERMOLUMINESCENT DOSIMETERS 55 TABLE 2.3 THERMOLUMINESCENT DOSIMETERS 56 TABLE 3.1 SURFACE WATER GAMMA 57 TABLE 3.2 SURFACE WATER TRITIUM 58 TABLE 4.1 GROUNDWATER GAMMA 59 TABLE 4.2 GROUNDWATER TRITIUM 60 TABLE 4.3 GROUNDWATER IODINE-131 61 TABLE 5.1 SEDIMENT 62 TABLE 6.1 FISH 63 TABLE 7.1 FOOD PRODUCTS 64 TABLE 8.1 SPECIAL SAMPLES 65 TABLE 9.1 INTERLABORATORY COMPARISON 66 43

Table 1.1 Sample Type: Air Particulate Hlter and Radioiodine Cartridge Analysis: Gross Beta and 1-131 lJ .l1lts: p ('"lJl111 AIR SAMPLE AS-l PG - GGNS Nearest Community LLD (pCiJrn"3) AS-l PG 0.07 0.01 LABlD START DATE END DATE 1-131 GROSS BETA 20070005 12/27/2006 1/2/2007 < 0.018 0.026 +/- 0.0012 20070034 1:2/2007 1/9/2007 < 0.020 0.028 +/- 0.0011 20070065 1/9/2007 1/]6/2007 < 0.022 0.014 +/- 0.0008 20070042 1/16/2007 1/23/2007 < 0.016 0.028 t /- O,(lOII 20070120 1:23/2007 1/30;2007 < 0.018 0.036 +/- 0.0012 20070136 1'30/2007 2/5/2007 < 0.024 0.031 i/- 0.0012 20070167 2/5/2007 2/13/2007 < 0.017 0.034 +/- 0.0011 20070174 2/13/2007 2/20;2007 < 0.018 0.025 +/- 0.0011 20070201 2/20/2007 2/27/2007 < 0.019 0.022 +1- 0.0010 2007021S 2/27/2007 3/612007 < 0.021 0.025 +1-0.0011 20070246 3/6/2007 3/13/2007 < O.()J 9 0.030 +/- 0.0011 20070267 3/13/2007 J!20/2007 < O.()J 9 0.020 -t-/- 0.0010 20070294 3/20/2007 3/27/2007 < O.()I 9 0.023 +/- 0.0010 2007030S 3/27/2007 4/3/2007 < 0.015 0.024 +/- 0.0010 20070371 4/3/2007 4/10/2007 < O.()J 8 0.026 +/-0.0010 20070392 4110/2007 4/17/2007 < 0.066 0.055 +/- 0.0066 20070426 4/17/2007 4/24/2007 < 0.017 0.026 +/- 0.0010 20070453 4/24/2007 5/1 /2007 < 0.025 0.cl24 +/- 0.0010 J

44

LLD (pCi/m"3) AS-l PG 0.07 0.01 LABID START DATE END DATE 1-131 GROSS BETA 20070468 5/1/2007 5;8!2007 < 0.029 0.023 +/-0.0010 20070481 5/8/2007 5!l5/2007 < 0.020 0.032 t/- 0.0011 20070526 5/15/2007 5/22/2007 < 0.028 0.028 +/- 0.0010 20070535 5/22/2007 5/29/2007 < 0.021 0.028 i/- 0.0012 20070568 5/29/2007 6/5/2007 < 0.015 0.026 +/- 0.00 I0 20070598 6/5/2007 6/12/2007 < 0.020 0.027 +/- 0.0011 20070659 6/12/2007 6/19/2007 < 0.018 0.031 +/-0.0011 20070679 6/19/2007 6/26/2007 < 0.019 0.026 +/- 0.0011 20070699 6/26/2007 7/3/2007 < 0.018 0.021 +/- 0.0009 20070729 7/3/2007 7/10/2007 < 0.020 0.014 +/- (W008 20070756 7/10/2007 7117/2007 < 0.018 0.017 +/- 0.0009 2007077D 7/17/2007 7/23/2007 < 0.018 0.014 +/- 0.0011 20070804 7/23/2007 7/31/2007 < 0.015 0.018 +1- 0.0008 20070S42 7/31/2007 817/2007 < 0.016 0.026 +/- 0.0010 20070861 8/7/2007 8/14/2007 < 0.021 0.036 -t-/- 0.0012 20070892 8/14/2007 8/21/2007 < 0.024 0.030 -t-/-O.OOll 20070909 8/21/2007 8/28/2007 < 0.025 0.021 -t-/_ 0.0010 20070914 8/28/2007 9;412007 < 0.015 0.026 0.0010 20070941 9/4/2007 9/11/2007 < 0.019 0.030 -,-/-0.0011 20070969 9111/2007 9/18/2007 < 0.069 0.061 ,/- 0.0041 2

45

LLD (pCiJm"3) AS-I PG 0.07 0.01 LAB In START DATE END DATE 1-131 GROSS BETA 20071010 9118/2007 9/25/2007 <: 0.016 0.032 +/-0.0011 20071058 9/29/2007 1012/2007 <: 0.017 0.035 +/- 0.0011 20071091 10:2/2007 10/9/2007 <: 0.019 0.018 +!- 0.0009 20071117 10/9/2007 10/16/2007 < 0.019 0.029 .,../- 0.0010 20071148 1O! 16/2007 10:23/2007 <: 0.021 0.020 0.0010 20071159 10/23/2007 10/30/2007 < 0.018 0.022 T/- 0.0010 20071204 10/30/2007 11/6/2007 < 0.021 0.051 7/- 0.0014 20071221 11/6/2007 11113/2007 <: 0.018 0.038 7/- 0.0012 20071248 11113/2007 11/2012007 <: 0.017 0.032 7/- 0.0011 20071266 lli20i2007 IlI27/2007 <: 0.029 0.020 7/- 0.0010 20071291 11/27/2007 12/4/2007 < 0.019 0.047 T/- 0.0014 20071308 1214/2007 12/ II 12007 < 0.020 0.035 .,../- 0.0012 20071341 12111/2007 12/19/2007 <: 0.017 0.024 7/- 0.0009 20071345 12/19/2007 12/26/2007 <: 0.013 0.031 f/- 0.0011 Average: 0.028 l\Iaximum 0.061 Minimum: 0.014 46

Table 1.1 Sample Type: Air Particulate Filter and Radioiodine Cartridge Anal vsis: Gross Beta and 1-131 Unit;: pCi/nr' AIR SAMPLE AS-3 61VA - GGNS - Control LLD (pCi/rn A 3) AS-3 0.07 0.01 LARID START DATE END DATE 1-131 GROSS BETA 20070006 12/27;2006 1/2;2007 < (l.020 0.027 -~/- 0.0012 20070035 l/2/2007 119;2007 < 0.015 0.027 i/- 0.0011 20070066 1/9/2007 1: 16/2007 < 0.018 0.016 +/- 0.0009 20070043 }f 16/2007 1/23!2007 < 0.014 0.030 +i -0.0012 20070121 1/23/2007 1/30/2007 < 0.019 0.036 +/- 0.0012 20070137 1/30/2007 2/5/2007 < 0.022 0.035 +/- O.OOl3 20070168 2/5/2007 2113:2007 < 0.016 0.033 +i- 0.0011 20070175 2il3/2007 2/20/2007 < 0.018 0.029 ,)- 0.0011 20070202 2i20/2007 2/27/2U07 < 0.015 0.023 -"-/- O.UOI0 20070219 2/27/2007 3/6/2007 < 0.016 0.024 i/-O.OOll 20070247 3/6/2007 3/13/2007 < 0.019 0.029 +/- 0.0011 20070268 3;13/2007 3/20/2007 < 0.017 0.019 +/- 0.0009 20070295 3/20,.2007 3/27/2007 < 0.018 0.023 +/- 0.0010 20070309 3:27/2007 4/3/2007 < 0.014 0.023 t/- (J.00I0 20070372 4/312007 4/10/2007 < 0.020 0.028 ..,./- 0.0011 20070393 4/10/2007 4117/2007 < 0.019 0.022 ,/- 0.0010 20070427 4/1712007 4!24/2007 < 0.018 0.024 -r/- 0.0010 20070454 4!24/2007 5/112007 < 0.025 0.024 r/_ 0.0010 1

47

LLD (pCi/m"3) AS-3 0.07 0.01 LABID START DATE END DATE 1-131 GROSS BETA 20070469 5/1/2007 5/8/2007 < 0.030 0.023 -+/- 0.0010 20070482 5/8/2007 5/15:2007 < 0.015 0.026 +/- 0.0010 20070527 5/15/2007 5/22/2007 < 0.031 0.024 7/- 0.0010 20070536 5/22/2007 5/29/2007 < 0.020 0.025 -+/-0.0011 20070569 5/29/2007 6/5/2007 < 0.017 0.027 'r/- 0.0010 20070599 6/5/2007 6/12/2007 < 0.020 0.027 +/- 0.0010 20070660 6!l2/2007 6/19/2007 < 0.015 0.029 7/- 0.00 II 20070680 6/19/2007 6,/26/2007 < 0.014 0.023 ,i- 0.0011 20070700 6:26/2007 7/3/2007 < 0.058 0.046 ~/- 0.0026 20070730 7/3/2007 7/10/2007 < 0.022 0.015 +/- 0.0009 20070757 7/10/2007 7/17/2007 < 0.017 0.017 +/- 0.0009 20070771 7/17/2007 7/23/2007 < 0.019 0.012 .* :- 0.0011 20070S05 7/23/2007 7/31/2007 < 0.015 0.019 +/- 0.0008 20070S43 7/31/2007 817/2007 < 0.016 0.030 +i- 0.0011 20070861 81712007 8/14/2007 < 0.017 0.040 +/- 0.0012 20070893 8!l4/2007 8/21/2007 < 0.022 0.028 +j- 0.0010 20070910 8/21/2007 8/28/2007 < 0.022 0.020 +/- 0.0009 20070915 8/28/2007 9/4/2007 < 0.019 0.023 +/- O.OOlO 20070942 9/4/2007 9/11/2007 < 0.020 0.026 +/- 0.0010 20070970 9/l1/2007 9/18/2007 < 0.016 0.028 +/- 0.0010 2

48

LLD (pCiJm A 3) AS-3 0.07 0.01 LABlD START DATE END DATE 1-131 GROSS BETA 20071011 9/18/2007 9/25/2007 < 0.017 0.025 +/- o.on 10 20071059 9/29/2007 10/212007 < 0.018 0.034 +1- 0.0011 20071092 10/2/2007 10/9/2007 < 0.017 0.015 +/- 0.0008 20071118 10/9/2007 10/16/2007 < 0.019 0.025 i'/- 0.0010 20071149 10/16/2007 10/23/2007 < 0.019 0.020 ':-/- O.OO]()

20071160 10/23/2007 10/30/2007 < 0.070 0.010 ~!- 0.0033 20071205 10/30/2007 11/612007 < 0.021 0.040 -/-0.0012 20071222 11/6/2007 11/13/2007 < 0.020 0.033 -/- 0.0012 20071249 1)113/2007 11/20/2007 < 0.017 0.(l26 -/- 0.0010 20071267 1),20/2007 11/27/2007 < 0.025 0.019 -/- 0.0009 20071292 11/27 12007 12/4/2007 < 0.015 0.(l39 -/- 0.0013 20071309 12/4/2007 12/11/2007 < 0.018 0.031 -/- 0.0011 20071342 12/11/2007 12119:2007 < 0.016 0.021 -/- 0.0009 20071346 12/19/2007 12/262007 < 0.015 0.027 -/- 0.0010 Average: 0.026 Maximum 0.046 "linimum: 0.010 49

Table 1.1 Sample Type: Air Particulate :Filter and Radioiodine Cartridge Analysis: Gross Beta and 1-131 Units: pCi/m~

AIR SAlVlPLE AS GGNS - Indicator LLD (pei/rn A 3) AS-7UH 0.07 0.01 LABID START DATE END DATE 1-131 GROSS BETA 20070007 12/27/2006 1/2/2007 < 0.015 0.026 +/- 0.0012 20070036 1;2/2007 1/9/2007 < 0.016 0.026 i/-O.OOIO 20070067 li9/2007 1/16/2007 < 0.016 0.014 t j- 0.0008 20070044 1/16/2007 1/23/2007 < 0.016 0.030 1/-0.0012 20070122 1.'23/2007 1/30/2007 < 0.020 0.036 t/- 0.0012 20070138 1130/2007 2/5/2007 < O.Ol7 0.032 +/- 0.0012 20070169 2/5/2007 2/13/2007 < 0.016 0.034 +/- 0.0011 20070176 2/13/2007 2/20/2007 < 0.014 0.032 i!- 0.0012 20070203 2/20/2007 2/27/2007 < 0.017 0.021 +/- 0.0010 20070220 2/27/2007 3/6/2007 < O.oI8 0.024 +/- 0.0011 20070248 3/6/2007 3/13/2007 < 0.019 0.034 +/- 0.0012 20070269 3/13/2007 3/20/2007 < 0.020 0.020 +/- 0.0010 20070296 }f20/2007 3/27/2007 < 0.017 0.023 +/- 0.0010 20070310 3/27/2007 4/3/2007 < 0.018 0.024 t/-O.OOIO 20070373 4/3/2007 4/10/2007 < 0.018 0.027 +/-0.0011 20070394 4/10/2007 4/17/2007 < 0.018 0.024 +/- 0.0010 20070428 4/17/2007 4/24/2007 < 0.019 0.026 i-/- 0.0010 20070455 4/24/2007 51112007 < 0.029 0.023 +/- 0.0010 1

50

LI,D (pCi/m"3) AS-7UH 0.07 0.01 LABID START DATE END DATE 1-131 GROSS BETA 20070470 5/1/2007 5/S/2007 < 0.029 0.024 +/- 0.0010 20070483 5/S/2007 5/15/2007 < 0.019 0.030 +/-0.0011 20070528 5/15/2007 5122/2007 < 0.031 0.025 +/- 0.0010 20070537 5/22/2007 5/29/2007 < O.OIS 0.025 r/- 0.0011 20070570 5/2912007 6/5/2007 < 0.019 0.023 .-/- 0.0010 20070fiOO fi/5/2007 6/12/2007 < 0.019 0.02fi ,;- 0.00 I0 20070661 6/12/2007 6/19/2007 < 0.019 0.032 ,1-0.0011 20070fiSI fi/19/2007 fi/26/2007 < 0.01l:! o.on ~/- 0.0011 20070701 6/26/2007 7/312007 < 0.020 0.021 -/- 0.0009 20070731 7/3/2007 7/10/2007 < 0.021 0.013 ,/- 0.0008 20070758 7/10/2007 7!l7/2007 < 0.021 0.016 ,/- 0.0008 20070772 7/17/2007 7/23/2007 < 0.017 0.011 r/- 0.0010 20070806 7/23/2007 7/31/2007 < 0.016 0.Cll8 ~/- 0.0008 20070844 7/31/2007 Si7i2007 < 0.019 0.025 ,/- 0.0010 20070863 8/7/2007 8/14/2007 < 0.017 0.036 1/- 0.0012 20070894 S1\4/2007 8/21/2007 < 0.023 0.030 c/- 0.0011 20070911 8/2112007 8/28/2007 < 0.026 0.020 ~;- 0.0009 20070916 S/28/2007 9/412007 < 0.017 0.026 ,1- 0.0010 20070943 9/4/2007 9il1!2007 < 0.018 o.on -,/- 0.0010 20070971 9/11/2007 9/1 S/2007 < 0.023 0.033 ..,/- 0.00 II 20071012 9/18/2007 9/2512007 < 0.fJl8 0.028 ~;- 0.0010 2

51

LI.D (pCilm A 3) AS-7UH 0.07 0.01 LABID START DATE END DATE 1-131 GROSS BETA 20071060 9/25/2007 10/2;2007 < 0.018 0.032 +/-0.0011 20071093 10/2/2007 10/9/2007 < 0.017 0.018 +/- 0.0009 20071119 10/9/2007 10/16/2007 < 0.017 0.031 +/- 0.0011 20071150 10 / 16/2007 10/23/2007 < 0.017 0.019 +l_ 0.0009 20071161 10/23/2007 10/30/2007 < 0.019 0.022 +/- 0.0010 20071206 10/30/2007 11/6/2007 < 0.016 0.048 +i_ 0.0013 20071223 11/6/2007 11,13/2007 < 0.019 0.037 +i_ 0.0012 20071250 1 U13/2007 11/20/2007 < 0.014 0.029 +i- 0.0011 20071268 11/20/2007 I li27/2007 < 0.025 0.020 \i- 0.0010 20071293 11/27/2007 12/4/2007 < 0.013 0.044 f/- 0.0013 20071310 12/4/2007 12/11/2007 < 0.014 0.032 1/- 0.0011 20071343 12/11/2007 12/19/2007 < 0.014 0.024 +/- 0.0009 20071347 121\ 9/2007 12/26/2007 < 0.014 0.027 +/- 0.0010 Average: 0.026 Maximum 0.048 Minimum: 0.011 52

Table 1.2 Sample Type: Air Particulate Filter Analysis: Gamma Isotopic Units: pCi/m3 AIR PARTICULATE FILTER QUARTERLY COMPOSITES (GAMMA) - GGNS LLD (pCi/mJ\3) 0.05 0.06 LABID LOCATION DATE CS-134 CS-137 20070362 AS-l PG 2/16/2007 < 0.006 < 0.005 20070363 AS-361VA 2/16/2007 < 0.004 < 0.005 20070364 AS-7 UH 2/16/2007 < 0.005 < 0.003 20070714 AS-1 PG 5/18/2007 < 0.007 < 0.004 20070724 AS-361VA 5/18/2007 < 0.006 < 0.006 20070725 AS-7 UH 5/18/2007 < 0.008 < 0.005 20071103 AS-I PG 8/17/2007 < 0.005 < 0.004 20071104 AS-361VA 8/1712007 < 0.005 < 0.004 20071105 AS-7 UH 8/17/2007 < 0.005 < 0.004 20071384 AS-1 PG 11113/2007 < 0.006 < 0.004 20071385 AS-361VA 11/13/2007 < 0.005 < 0.006 20071386 AS-7 UH 11113/2007 < 0.004 < 0.004 53

Table 2.1 Sample Type: Thermolumillescent Dosimeters Analysis: Gamma Dose Units: mrem/Qtr Inner Ring - Within General Area of Site Boundary (ODCM Specifications)

I Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual I Mean M-16 10.5 10.8 11.4 M-17 10.6 11.1 **

j"""

M-19 9.0

," w, '~'~""'~"~-'~'_"'~-<

11.1 M-21 14.5 14.3 M-22 9.1 10.6 M-23 8.5 7.8 8.1 9.1 M-25 7.0 8.5 9.3 9.5 M-28 10.9 10.7 11.5 11.5 M-94 10.3 11.4 10.6 10.6 S-2 [M-95] 8.1 8.3 8.8 8.3 S-2 [M-96]

'" <~, ' " w m w " , ' __ "'~'_'~

7.6 8.0 7.5 8.4 I S-4 [M-97] .3 6.9 7 S-5 [M-98] 12.9 13.3 13.

I 8-6 [M-99]

  • 14.6 16.3 14. 15.6 S-7 [M-lOO] 12.5 13.0 12.4 11.5 12.4
    • replaced by M-IOO
  • Location with highest annual mean.

Outer Ring - Approximately Three (3) to Five (5) Miles from the Site (ODCM Specifications)

Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr AIIDual Mean M-36 8.8 9.2 9.1 9.6 M-40 7.4 7.7 8.3 9.1 M-48 9.7 11.1 11.2 11.0 M-49 10.0 11.0 12.0 w"",!. 12.1 M-50 9.4 10.5 10.6 11.8

- 5 11.9 10.3 11.4 11.2 12.2 12.8 11.8 12.1

  • Location with highest annual mean.

54

Table 2.2 Sample Type: Thermoluminescent Dosimeters Analysis: Gamma Dose Units: mrem/Qtr Special Interest Areas - Population Centers & Schools (ODCM Specifications)

Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Mean

-~~~~T-_1:.:--~--~~;---1 ~~:~ ~)i u-~.~- .. -_u_m~~:~1 M-09 --~-- 10.0 9.9 [ - 10.2-10~4- 10.1 M-IO L 8.1 c__tl.7 ~ __ !!-.(; 8.9 __+-._ ~.8~J

--~ ~~-L 7.7 I. __tl.~ ~.Q__ 8.4 _ -I 8.5__ ,

M-38: 9.1 10.3; 10.1 10.2 9.9

~--M--39--'--- -----,--------r------------- T- -- -- -- - r-------l I I 8.7 9.8! 9.5 i 9.5  ! 9.3 1

  • Location with highest annual mean.

55

Table 2.3 Sample Type: Thermoluminescent Dosimeters Analysis: Gamma Dose Units: mrem/Qtr Special Interest Areas - Control (ODCM Specifications)

Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Mean M-14 11.0 11.3 12.8 11.5 11.6 56

Table 3.1 Sample Type: Surface Water Analysis: Gamma Isotopic Units: pCi/l SURFACE WATER SAMPLES (GAMMA) - GGNS LLD (pCill) 15 15 30 15 30 15 30 15 15 18 60 15 LAB ID LOCATION DATE MN-54 CO-58 FE-59 C<>-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 20070038 MRDOWN 1/9/2007 < 10.91 < 8.68 < 20.56 < 10.80 < 23.92 < 14.83 < 20.00 < 11.96 < 12.32 < 1039 < 43.00 < 11.l7 20070039 MRUP 1!9/2007 < 9.54 < 7.03 < 12.79 < 8.03 < 24.00 < 11.27 < 19.94 < 14.60 < 12.04 < 7.57 < 47.60 < 14.24 20070040 MRDOWNGG 1/9/2007 < 11.38 < 9.68 < 23.15 < 5.87 < 1706 < 12.70 < 19.06 < 12.09 < 10.28 < 12.20 < 30.91 < 12.30 20070041 MRUPGG 1/9/2007 < 7.42 < 6.17 < 13.43 < 6.79 < 11.14 < 8.61 < 13.05 < 8.03 < 6.24 < 7.28 < 23.21 < 10.93 20070312 MR DOWN 4/3/2007 < 1363 < 11.79 < 21.50 < 7.75 < 21.09 < 13.14 < 20.26 < 12.94 < 9.88 < 6.39 < 39.42 < 14.07 20070313 MRUP 4/3/2007 < 8.08 < 8.71 < 18.17 < 9.59 < 20.41 < 10.68 < 14.37 < 10.05 < 10.77 < 9.11 < 44.82 < 10.()1 20070773 MRDOWN 7/24/2007 < 7.35 < 10.47 < 18.07 < 9.05 < 26.12 < 11.31 < 17.79 < 14.80 < 12.40 < 10.93 < 34.05 < 10.56 20070774 MRUP 7/24/2007 < 6.37 < 10.63 < 24.30 < 7.47 < 28.02 < 11.86 < 12.87 < 13.90 < 8.61 < 11.29 < 36.17 < 14.72 20071107 MRDOWN 10/9/2007 < 7.06 < 6.37 < 11.l4 < 6.22 < 17.07 < 8.01 < 13.50 < 9.01 < 7.17 < 9.67 < 30.38 < 14.60 20071108 MRUP 10/9/200 < 2.16 < 2.30 < 5.51 < 1.97 < 4.72 < 3.27 < 4.27 < 14.99 < 2.27 < 2.05 < 23.82 < 7.84 20071224 MR DOWN

  • II! 14/2007 < 9.53 < 8.30 < 24.38 < 12.63 < 12.97 < 11.21 < 19.31 < 14.64 < 12.87 < 14.27 < 41.72 < 14.08 20071226 MR DOWN GG
  • 11/14/2007 < 5.39 < 4.71 < 13.50 < 5.89 < 13.34 < 7.16 < 10.91 < 8.62 < 6.45 < 5.60 < 27.80 < 6.()9 "GG" - indicates duplicate sample.
  • Annual Sample collected during liquid discharge 57

Table 3.2 Sample Type: Surface Water Analysis: Tritium Units: peill SURFACE WATER SAMPLES (TRITIUM) - GGNS LLD (pCi/]) SURFACE WATERH-3 3000 LABID LOCATION DATE TRITIUM 20070016 OUTFALL 007 1/3/2007 < 572 20070038 MRDOWN 1/9/2007 < 586 20070039 MRUP 1/9/2007 < 578 20070040 MRDOWNGG 1/9/2007 < 581 20070041 MRUPGG 1/9/2007 < 578 20070119 OUTFALL 007 2/1/2007 2,115+/-294 20070222 OCTFALL007 3/6/2007 677 +/- 265 20070305 OCTFALL007 4/1/2007 711 +/-255 20070314 MRDOWN 4/3/2007 < 537 20070315 MRUP 4/3/2007 < 541 20070472 OCTFALL 007 5/9/2007 < 555 20070609 OCTFALL 007 6/11/2007 < 525 20070733 OUTFALL 007 7/10/2007 606 +/- 241 20070773 MRDOWN 7/24/2007 <: 520 20070774 MRUP 7/24i2007 <: 519 20070850 OUTFALL 007 8/8/2007 < 547 20070933 OUTFALL 007 9/7/2007 < 525 20071068 OUTFALL 007 IOi3/2007 < 518 20COII07 MRDOWN 10/9/2007 < 536 20071108 MRUP 10/9/2007 <: 536 20071201 OUTFALL 007 11/6i2007 < 551 20071225 MRDOWN* 11/14 /2007 < 546 20071227 MRDOWNGG* 11/14/2007 <: 545 20071311 OCTFALLOO7 12/6/2007 < 585

  • Annual Sample collected during liquid discharge "GG" -- indicates duplicate sample.

58

Table 4.1 Sample Type: Groundwater Analysis: Gamma Isotopic Units: pCi/l GROUND WATER SAMPLES (GAMMA) - GGNS LLD (PCiIl) 15 15 30 15 30 15 30 15 18 60 15 LABID LOCATION DATE MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 C8-134 C8-137 BA-140 LA-140 20071354 PGWELL 12/26/2007 < 6.01 < 6.38 < 11.66 < 5.78 < 10.04 < 6.36 < 8.88 < 5.66 < 5.37 < 23.29 < 10.04 20071357 CONSTWELL 12/26/2007 < 5.64 < 6.89 < 10.36 < 4.33 < 11.63 < 6.02 < 11.91 < 7.39 < 5.61 < 19.86 < 9.10 20071360 PGWELLGG 12/26/2007 < 6.25 < 4.67 < 7.80 < 4.58 < 12.31 < 7.49 < 9.24 < 5.51 < 6.17 < 20.()4 < 7.74 20071361 CONSTWELL 12/26/2007 < 5.98 < 4,75 < 14.66 < 7,29 < 15.22 < 9.29 < 11,09 < 7.05 < 7,96 < 25.48 < 12.85 GG "GG" - indicates duplicate sample.

59

Table 4.2 Sample Type: Groundwater Analysis: Tritium Units: pCi/1 GROUND WATER SAMPLES ( TRITIUM) - GGNS LLD (pCi/I) 2000 LAB lD LOCATION DATE TRITIUM 20071356 PGWELL 12/26/2007 < 566.24 20071359 CONSTWELL 12/26/2007 < 591.116 60

Table 4.3 Sample Type: Groundwater Analysis: Iodine Units: pei!l GROUND WATER SAMPLES (Iodine-131) - GGNS LLD(pCill) 1.0 LABm LOCATION DATE 1-131 20071355 PGWELL 12/26/2007 <: 0.89 20071358 CONSTWELL 12/26/2007 <: 0.75 61

TableS.1 Sample Type: Sediment Analysis: Gamma Isotopic Units: pei/kg SEDIMENT SAMPLES (GAMMA) - GGNS LLD (pCi/KG) 150 180 LAB lD LOCATION DATE CS-134 CS-137 20071348 SEDHAM 12/26/2007 < 25.47 < 31.44 20071349 SEDCONT 12/26/2007 < 20.60 < 19.60 20071350 SEDHAMGG 12/26/2007 < 30.61 < 32.11 20071351 SEDCONTGG 12/26/2007 < 20.22 < 20.97 "GG" - indicates duplicate sample.

62

Table 6.1 Sample Type: Fish Analysis: Gamma Isotopic Units: pei/kg FISH SAMPLES (GAMMA) - GGNS LLD (pCi/kg) 130 130 260 130 260 130 150 LAB In LOCATION DATE MN-54 CO-58 FE-59 CO-60 ZN-65 CS-134 CS-137 20070809 FISHUP 7/19/2007 < 16.11 < 13.03 < 34.61 < 17.62 < 39.35 < 12.30 < 15.34 20070810 FISHDOWN 7/19/2007 < 13.27 < 10.40 < 34.89 < 14.73 < 39.33 < 10.77 < 11.61 63

Table 7.1 Sample Type: Food Products Analysis: Iodine-13l and Gamma Isotopic Units: pCi/kg VEGETATION SAMPLES (GAMMA) - GGNS LLD (PCi/kg) 60 60 80 LABID LOCATION DATE 1-131 CS-134 CS-137 20070051 VEG-CONT 1/19/2007 < 50.31 < 26.78 < 30.44 20070052 VEG-J 1/19/2007 < 58.75 < 45.92 < 47.77 20070053 VEG-CONTGG 1/19/2007 < 42.29 < 38.11 < 36.99 20070054 VEG-J GG 1/19/2007 < 51.19 < 28.32 < 46.57 20070473 VEG-CONT 5/9/2007 < 59.46 < 28.29 < 42.33 20070474 VEG-J 5/9/2007 < 58.35 < 32.18 < 38.60 20070807 VEG-CONT 7/30/2007 < 58.54 < 37.76 < 28.98 20070808 VEG-J 7/30/2007 < 59.70 < 38.00 < 39.20 20071109 VEG-CONT 10/10/2007 < 48.20 < 48.27 < 44.38 20071110 VEG-J 10/10/2007 < 59.41 < 42.02 < 38.97 "GG" - indicates duplicate sample.

64

Table 8.1 Sample Type: Special Samples Analysis: Gamma Isotopic Units: pei/kg SPECIAL VEGETATION SAlVlPLES (GAMMA) - GGNS LLD (pCi/kg) 60 60 80 LABID LOCATION DATE 1-131 CS-I34 CS-137 20i170973 SECTOR "F" VEG 9/18/2007 < 45.51 < 55.34 < 35.47 20070974 SECTOR "F" GG VEG 9/18/2007 < 44.34 < 59.07 < flO.31 "GO" - indicates duplicate sample.

SPECIAL SURFACE WATER SAMPLES (GAMMA) - GGNS LLD(pCiII) IS 15 30 IS 30 IS ~~ 15 15 18 60 IS LABID LOCATION DATE ~IN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-I34 CS-137 BA-140 LA-140 20070012 Ol/[TALL urn 1/3!2C~17 < ~U)O < 7.60 < I*UI <. ~U)2 <. I9.ll-' <. 10.1)5 <. 1.' ... 5 <. 8.53 <. 8.94 < 8.00 <. 31.38 <. 11.59 20070319 OljTFALL 007 *-l/212007 < 6.65 <. 6.46 < 1O.J7 <. 4.15 <. 22.85 <. 11.62 <. lUI <. 12.44 < C).82 <. 12.3/ <. 40.82 <. 11.93 2W70737 OLJTFALLCm 7/1012007 < 11.27 < 12.66 < 17.88 <. 7.57 <. 15.62 <. 9.17 < 2l.38 <. 14.23 <. 11.79 < 10.92 <. 45.73 <. ] 1.94 20071072 OUTFAllOU7 1013/2007 <. tl,79 <. 5.82 <. 12.99 <. 4.69 <. 9..,6 <. 6.40 <. 13.26 <. 8.34 <. 6.97 < 7.36 <. ,0.2:\ <. 11.50 65

Table 9.1 Sample Type: Interlaboratory Comparison Analysis: Gross Beta, Tritium, Iodine-13l and Gamma Isotopic ENVIRONMENTAL (CROSS-CHECK) PROGRAM PARTICIPATION RESULTS Sample Type Sample # Date Analysis Known RBS Value RBSN* RBS N-Value(') OEV(b) RANGE(C)

(units) 1-131Cartridge E5390-125 6/14/2007 1-131 7.91 E+01 7.97E+01 0.13 0.01 Gross Beta Water E5389-125 6/14/2007 BETA 1.99E+02 2.25E+02 1.49 0.06 Gamma Water E5388-125 6/14/2007 Cr*51 4.11E+02 4.20E+02 0.75 0.20 1----. ---_.

(pCi/liter) Mn-54 1.33E+02 1.48E+02 3.89(0) 0.04 1--------------.-- -- ._.

Co-58 1.59E+02 1.64E+02 1.01 0.06

-'"-- .. __ .. _----_ .. __.-.. . _._-_.. _. ------~ .. _.

Fe*59 134E+02 1.45E+02 2.83 0.16 Co-60 1.91E+02 1.95E+02 0.75 0.09 1----_._---- --_._.

Zn-65 2.68E+02 282E+02 0.87 0.13 t-----.-- ------------

1-131 1.02E+02 1.02E+02 -0.02 0.16 1---... -.-..... ----- .__ .. _._-----_ .... _.-

Cs-134 1.94E+02 1.93E+02 -0.11 0.24 1----...... -_... - ... _.... _._---_.- ---

Cs-137 1.35E+02 1.40E+02 1.21 0.32 Ce-141 160E+02 1.63E+02 0.57 0.38 Tritium Water E5467-125 9/13/2007 H*3 1.20E+04 1.11E+04 -1.26 0.06 Gross Beta Filter E5468-125 9/13/2007 BETA 3.23E+01 2.81E+01 -1.46 003 Gamma Filter E5469-125 9/13/07 Cr*51 1.25E+02 1.22E+02 -0.09 0.03 (pCilfilter) Mn-54 7.26E+01 7.82E+01 1.93 0.14 Co-58 4.94E+01 4.87E+01 -0.23 0.19 Fe-59 479E+01 5.17E+01 1.33 0.04 Co-60 6.41E+01 6.48E+01 0.26 0.03 Zn-65 876E+01 9.96E+01 2.38 0.09

_.__ ._..__. -~--_.~,-----

Cs-134 6.38E+01 6.12E+01 -0.89 0.08 f------------ .. --.- ._---- ---_.. _.--_ .

Cs-137 5.65E+01 585E+01 0.69 0.11

~-~- - -.-.-._._--

Ce-141 9.14E+01 9.12E+01 -0.06 0.12 Gamma Soil E5470-125 9/13/2007 Cr-51 3.91 E-01 3.83E-01 -0.07 0.03

---_._----- ._---_.. _ . ~ .. __.

(pel/gram) Mn-54 2.27E-01 2.43E-01 024 0.01 Co-58 1.54E-01 1.38E-01 -0.36 0.04

_.- -----_ ...._--- ._ ... _~_._.

Fe-59 1.49E-01 1.48E-01 -0.03 0.02 Co-60 2.00E-01 1.94E-01 -0.11 0.01

-- _._.- .... ..._. _ ~ __._- 1--._..

Zn-65 2.73E-01 3.00E-01 1.74 0.09 Cs-134 1.99E-01 2.03E-01 0.07 0.02 Cs-137 2.73E-01 2.99E-01 0.33 0.02

_.- _.- ........ ...~ ~_ .. _- -_...._._....* -... _... -

Ce-141 2.85E-01 2.81 E-01 -0.05 0.03 66

RIVER BEND STATION ENVIRONMENTAL (CROSS-CHECK) PROGRAM PARTICIPATION RESULTS Sample Type Sample # Date Analysis Known RBS Value RBS N- RBS N-(units)

Value(a) DEV(b) RANGEl c )

Gamma Milk E5391-125 6/12/2007 Cr-51 5.12E+02 5.17E+02 0.12 0.06 (pCI/liter) Mn-54 1.66E+02 1.82E+02 1.14 0.11 Co-58 1.98E+02 2.02E+02 0.24 0.05 Fe-59 1.67E+02 185E+02 1.23 0.09 Co-60 2.38E+02 2.37E+02 -0.03 0.02 Zn*65 3.34E+02 3.72E+02 1.98 0.07 1-131 7.01E+01 7.03E+01 0.05 0.20 Cs-134 242E+02 242E+02 0.02 0.07 Cs-137 1.69E+02 1.70E+02 0.06 0.03 Ce-141 2.00E+02 2.03E+02 0.16 0.05 NOTES:

(a) The known value as determined by Vendor.

(b) The normalized deviation from the "known" value is computed from the deviation and the standard error of the mean;

+/-2.00 is the waming limit and +/-3.00 is the control limit. This is a measure of accuracy of the analytical methods.

(c) The normalized range is computed from the mean range, the control limit, and the standard error of the range; +2.000 is the waming limit and +3.000 is the control limit. This is a measure of precision of the analytical methods.

(d) Results reported were outside Control Limits.

Exceptions:

There was one result outside the control limits for accuracy in the 2007 Interlaboratory Comparison program participation studies. The normalized-deviation for nuclide Manganse-54 (Mn-54) in a gamma isotopic water analysis, Samplee number E5388-125 of 6/14/2007, was +3.89, which is outside the control limit of +/-3.00 for accuracy. This high bias result is considered conservative and is considered as having no impact on past results of the program. The results for (Mn-54) in all other program samples were within control limits for the year 2007; with normalized-deviations of 0.24 in sediment sample analysis; 1.93 in an air filter sample analysis; and 1.14 in a milk sample analysis. Reanalysis of the 2007 water sample produced results very similar to the original averaged result.

A review concerning the high bias was performed with no obvious issues associated with the counting of the water samples. The vendor was contacted concerning this result. Explanation from vendor was that the effect of coincidence summing in calibration sources containing Y-88 and Co-60 may cause a lower efficiency for energies in the same region as Mn-54. The lower efficiency will result in a higher concentration for Mn-54. This phenomenon can sometimes also be seen with energies associated with Fe-59 and Zn-65.

98% of interlaboratory crosscheck results were within control limits for accuracy and 100% were within control limits for precision.

67

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