GNRO-2005/00011, 2004 Annual Radiological Environmental Operating Report for 2004

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2004 Annual Radiological Environmental Operating Report for 2004
ML051180323
Person / Time
Site: Grand Gulf Entergy icon.png
Issue date: 04/27/2005
From: Bottemiller C
Entergy Operations
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
GNRO-2005/00011
Download: ML051180323 (63)


Text

GNRO-2005/00011 April 27, 2005 U S . Nuclear Regulatory Commission Washington, D.C. 20555 Attention: Document Control Desk

Subject:

Grand Gulf Nuclear Station (GGNS) 2004 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 Radiolouical Environmental Operatinq Report for the period January 1,2004 through December 31,2004.

is lett sn in . If you have questions or require additional information concerning these reports, please contact Mr. Bruce D. Bryant at (601) 437-6316, or this office at (601) 437-6685.

Yours truly, CAB/MJL attachment: 2004 Annual Radiological Environmental Operating Report cc: (See Next Page)

April 27, 2005 GNRO-2005/00011 Page 2 of 2 CC:

cc: NRC Senior Resident Inspector Grand Gulf Nuclear Station Port Gibson, MS 39150 U. S. Nuclear Regulatory Commission ATTN: Dr. Bruce S. Mallet (w/2)

Regional Administrator, Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 7601 1-4005 U. S. Nuclear Regulatory Commission ATTN: Mr. Bhalchandra Vaidya, NRR/DLPM (w/2)

ATTN: ADDRESSEE ONLY ATTN: U. S. Postal Delivery Address Only Mail Stop OWFN/7D-1 Washington, DC 20555-0001 Mr. D. E. Levanway (Wise Carter)

Mr. L. J. Smith (Wise Carter)

Mr. N. S. Reynolds Mr. H. L. Thomas

ENTERGY OPERATIONS, INC.

GRAND GULF NUCLEAR STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT January 1,2004-December 31,2004 I

Prepared By Reviewed By Approved By I

TABLE OF CONTENTS

SUMMARY

6

1.0 INTRODUCTION

11 I.IRadiological Environmental Monitoring Program 11 1.2 Pathways Monitored 11 1.3 Land Use Census 12 2.0 INTERPRETATIONAND TRENDS OF RESULTS 23 2.1 Air Paaticuiate and Radioiodine Sample Results 23 2.2 Theraoluminescent Dosimetry (TLD) Sample Results 23 2.3 Water Sample Results 25 2.4 Sediment Sample Results 25 2.5 Milk Sample Results 26 2.6 Fish Sample Results 26 2.7 Food Product Sample Results 26 2.8 Land Use Census Results 27 2.9 Interlaboratory Comparison Results 28 3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

29 3.1 Program Results Summary 29 2

LIST OF TABLES TABLE 1.1 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM 13 TABLE 3.1 RADIOLOGICAL ENVIRONMENTAL MONITORING 30 PROGRAM

SUMMARY

3

LIST OF FIGURES FIGURE 1-1 EXPOSURE PATHWAYS 20 FIGURE 1-2 SAMPLE COLLECTION SITES - NEAR FIELD 21 FIGURE 1-3 SAMPLE COLLECTION SITES - FAR FIELD 22 FIGURE 2-1 TLD READINGS 24 4

LIST OF ATTACHMENTS ATTACHMENT I RADIOLOGICAL MONITORING REPORT 35

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 Stations (GGNS)

Radiological Environmental Monitoring Program (REMP) for the period January 1, 2004 through December 31, 2004. 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 venison. GGNS did not detect any plant-related radionuclides in these samples.

Radiological Environmental Jlonitoring 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 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 fi-om 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.

6

Harmful Effects or Irreversible Damage The REMP monitoring did not detect any harmfil effects or evidence of irreversible damage in the current year. Therefore, no analysis or planned course of action to alleviate problems was necessary.

GGNS' review indicates that no samples equaled or exceeded reporting levels for radioactivity concentration in environmental samples, as outlined in ODCM 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 Chernobyl 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 have 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 MSDH's monitoring program for the reporting period compared favorably with the GGNS REMP and did not indicate elevated levels of radiation or radioactivity build-up attributed to plant operations.

7

Sample Deviations

+ Milk The REMP did not include milk sampling within five miles (8 km) of GGNS in the current year due to unavailability. ODCM 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 ODCM 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 ODCM specifications.

8

+ Air Samples The following air sample locations had reduced run times due to weather-related outages or mechanical problems. As described in footnote (a) to ODCM Specification Table 6.12.1-1, deviations from the required sampling schedule are permitted due to malfunction of sampling equipment and other legitimate reasons.

Sample Date In Date Out RunTime out-of-Service Comments Location hours hours AS-1 PG 11/23/04 11/30/04 166.69 1.46 Power Outage AS-7 UH 11/23/04 11/30/04 166.67 1.46 Power Outage AS-1 PG 10119/04 10126104 132.73 36.94 Sample pump failure AS-7 UH 09/07/04 09/14/04 172.94 0.43 Power Outage AS-7 UH 08/03/04 08/10/04 168.47 0.63 Power Outage AS-1 PG 07/13/04 07/20/04 166.62 1.03 Power Outage AS-1 PG 06/29/04 07/06/04 158.74 10.59 Power Outage AS-7 UH 05/25/04 06/01104 171.23 0.60 Power Outage AS-3 61VA 04/20/04 04/27/04 167.99 0.24 Power Outage AS-7 UH 04/20/04 04/27/04 169.10 2.17 Power Outage AS-I PG 03/30/04 04/06/04 166.06 1.10 Power Outage.

Based on the sample collection period reductions, air samples were collected the following percentages of the available time:

AS-1 PG 99.4%

AS-3 61VA 99.9%

AS-7 UH 99.9%

+ TLDs TLD station M-48 (Outer Ring, Sector K, 4.8 miles) was displaced from its designated location by unknown causes during the 1 quarter of 2004 This data was excluded from reporting. Although the 1 quarter exposure at location M-48 is unknown, GGNS' review of results for similarly located TLDs indicated no abnonnal readings.

9

+ Missed Samples There were no missed samples in the reporting period.

+ Unavailable Results GGNS received analytical results in adequate time for inclusion in this report. In addition, GGNS review identified no missing results.

Program Modifications No program modifications occurred during the reporting period.

Attachments contains results of TLD, air, water, sediment, fish, food products and special samples collected. TLDs were analyzed by Waterford-3 Dosimetry. All remaining samples were analyzed by River Bend Stations (RBS) Environmental. Attachment 1 also contains RBS results from participation in the interlaboratory coinparison program.

10

1.0 Introduction 1.1 Radiological E ~ ~ i r o nMonitoring

~ e ~ t ~ 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 identiQing physical and biological accumulations that may contribute to human exposures.

Considering the potential radiation exposure to plant and animal life in the environment surrounding GGNS .

0 Correlating levels of radiation and radioactivity in the environment with radioactive releases fi-om station operation.

1.2 Pathways Monitored The airborne, direct radiation, waterborne and ingestion pathways, as seen in Figure 1- 1, are monitored as required by GGNS ODCM 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

1.3 Land Use Census GGNS personnel conduct a land use census biannually, as required by ODCM Specification 6.12.2. 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 ODCM. The most recent land use census was conducted in 2003. Details of the 2003 Land Use Census were included in the 2003 AREOR. The next Land Use Census will be conducted in 2005.

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 1 sample close to the SITE AS-7 UH (Sector H, Radius 0.5 Miles) - Continuous sampler operation Radioiodine Cannister 131; BOUNDARY having the highest South-southeast of GGNS at the IBEW with sample collection per 7 7 days calculated annual average Union Hall.

days or as required by dust groundlevel DIQ.

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 Barn.

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-I9 (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 Paint Description, Sampling and Type and Frequency 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 MeteorologicalTower.

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.

14

Table 1.1 Radiological Environmental Sampling Program xposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLPs Radiation An outer ring approximately 3 to 5 M-48 (Sector K, Radius 4.8 Miles) - 0.4 92 days Gamma dose; 92 days miles from the site. Miles 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) - Paiiola Hunting Club Entrance.

M-55 (Sector D, Radius 5.0 Miles) - Near lngelside Karnac Ferry RoadlAshland Road Intersection.

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

TLDs 8 stations in special interest areas M-01 (Sector E, Radius 3.5 Miles) - Across such as population centers, nearby the road from Lake Claiborne Entry Gate.

residences, schools, and in 1 or 2 (Special Interest) areas to serve as control stations.

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

M-09 (Sector D, Radius 3.5 Miles) - Warner Tully Y-Camp. (Special Interest)

M-10 (Sector A, Radius 1.5 Miles) - Grand Gulf Military Park. (Special Interest) 15

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-I4 (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) - St.

Joseph, Louisiana, Auxiliary Water Tank.

(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 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.

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 Groundwater Samples from 2 sources. PGWELL (Sector G, Radius 5.0 Miles) - 366 days Gamma isotopic and tritium 30rt 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. 8 km of GGNS. days 1 control sample (only if indicator ALCONT (Sector K, Radius 10.5 Miles) -

exists) r8 km if milk is available. Located South-southwest of GGNS at AIcorn State University.

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 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 and 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 AIcorn State University south-southwest of not performed. GGNS when available, otherwise a location 15-30 km distant.

19

FIGURE 1-1 EXPOSURE PATHWAYS FIGURE 1-1 Exposure Pathways 20

FIGURE 1-2 SAMPLE COLLECTION SITES NEAR FIELD FIGURE 3.0-1 Collection Site Locations 0-4 Mile Area Map LEGEND

,P fish Air Sampler (3 Surface Water A Ground Water 5 Broadleaf Vegetation 0 Sediment r~TLD W

Ranney Wells Milk

- ENTERGY I

y-y GRAND GULF NUCLEAR STATION 0-4 Mile Environmental

-(,Jy-

/ , <\

Sampling Location Map SCALE I N MILES Grand Gulf, Unit 1 3.0-7 Revision 29 OW5

FIGURE 1-3 SAMPLE COLLECTION SITES - FAR FlEL FIGURE 3.0-2 Collection Site Locations, General Area Map 4-10 Mile Area Map

~~

LEGEND Air Sampler 0 Surface Water A Ground Wider Broadleaf Vegetation

  • Sediment Ranney Wells *

( J TLD Milk VICKSGUitG AIRPORT t-igure 3.0-1 18 MILES FROM GRAND GULF TO VICKSBURG AIRPORT Sector (8)

HERMANVILLE Located 13 Miles irom Grand Gulf - Sector {F)

- ENTERGY GRAND GULF NUCLEAR STATION 4-10 Mile Environmental Sampling Location Map Grand Gulf, Unit 1 3.0-8 Revision 29 01x35 I

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-13 1 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 Thermolumineseent 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.

With the exception of TLD location M-21 (Sector J, 0.4 miles), levels continue to remain at or near background. An increase in the dose rate at location M-21 was due to implementation of moderate hydrogen injection to the feed water system. Hydrogen injection provides protection against Intergranular Stress Corrosion of plant components. An increase in direct radiation dose rates associated with implementation of hydrogen injection has been documented at other nuclear power plants. This increase is not a result of increased liquid or gaseous releases to the environment. Location M-2 1 dose rate of 3.7 millirem per quarter greater than the Control location M-14 (sector 3, 18.0 miles) remains well below the limitations of 10 CFR 20.1301(a)(l) and 20CFR 20.1302@)(2)(ii).

23

Figure 2-1 mFUqtr 1999-2004 TLD Readings 20.0 16.0 A c1 1999-2003 X Control Location ,

Maximum 12.0 A a (+2 Stdev)

+ A A

, X A A 1999-2003 8.0 Control Location

+ Qtr 1,2004 Qtr 2,2004 A Qtr 3,2004 x Qtr 4,2004 Mnimum

(-2 Stdev) 4.0 24

2.3 Water Sample Results Analytical results for surface water and groundwater samples were similar to those reported in previous years.

Surface water samples were collected from two 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. In addition, gamma emitting radionuclides and tritium were undetectable in the downstream sample collected during a liquid radwaste discharge.

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 previous 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 fi-om 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) location. In this reporting period, Cobalt-60 was detected at 17.87 rt 10.26 pCi/kg and Cesium-137 was detected at 15.48 rt 8.39 pCi/kg in the downstream (indicator) location.

A review of REMP data collected at the downstream location from 1983 through 2003 indicates the Cesium-137 concentration has ranged from less than detectable to 300 pCi/Kg. The presence of Cesium- 137 is attributed to atmospheric weapons testing.

From 1983 through 2003 the concentration of plant related gamma emitting radionuclides similar to Cobalt-60 [Manganese-%, Cobalt-581 has ranged from less than detectable to 20 pCi/kg. Cobalt-60 at the concentration of 17.87 If: 10.26 pCi/kg is near the detection level for this nuclide and was less than detectable in a duplicate sample.

Based on the above review, 2004 REMP data is consistent with the previous monitoring periods. Therefore, GGNS concluded that plant operations Mad no significant impact on this pathway during the reporting period.

25

2.5 Milk Sample Results GGNS personnel did not collect inilk samples within five i d e s 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 Chernobyl release and atmospheric weapons testing. These results indicate that this pathway has not been affected by plant operations.

Five special samples of vegetation were collected at an offsite location to supplement the REMP. The location is under evaluation for a control sample location. GGNS did not detect any plant related gamma emitting radionuclides in vegetation samples during the reporting period.

One special sample of venison was collected on the GGNS property to supplement the REMP. GGNS did not detect any plant related gamma emitting radionuclides in the venison sample during the reporting period.

26

2.8 Land Use Census Results The next Land Use Census will be conducted in 2005.

27

2.9 interlaboratory Comparison Results River Bend Station (RBS) Environmental Laboratory analyzed interlaboratory comparison samples to fulfill the requirements of the ODCM Specifications 6.12.1.

Attachment I, Radiological Environmental Monitoring Report, contains these results in Table 9.1. GGNS review of RBS interlaboratory comparison indicated that 100%

of the sample results for accuracy and 100% of the results for precision were within the acceptable control limits of the three normalized deviations.

28

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.

29

TABLE 3.1 RadioloPical Environmental Monitoring Program Summary Name of Facility: Grand Gulf Nuclear Station Docket No: 50-416 Locatioii of Facility: Claiborne Countv, Mississippi Reporting Period: Januarv - December 2004 Sample Type Type & Number LLD Indicator Locations Location with Highest Annual Mean Control Locations Number of

( Units ) of Analyses a Mean ( F 1 Mean ( F ) Nonroutiiie

[ Range I [ Range 1 Results Mean ( F )

Location d [ Range ]

Air Particulates GB 156 0.01 0.023 ( 104 / 104) AS-1 PG 0.023 ( 52 / 52 ) 0.023 { 52 1 52 )

(p~i/m3 [ 0.008 - 0.046 ] (Sector G, 5.5 mi ) [ 0.009 - 0.046 ] [ 0.009 - 0.045 ]

GS 12 CS-134 0.05 <LLD NIA NiA <LLD CS-137 0.06 <LLD NIA NiA <LLD Airborne Iodine 1-131 156 <LLD NiA NIA <LLD 0

( pci/ni3 Inner Ring TLDs Gamma 36 9.8 ( 36 1 36 ) M-2 1 14.3 ( 4 1 4 ) N/A (W Q t r 1 [ 6.8 - 16.1 ] ( Sector J, 0.4 mi. ) [ 11.5 - 16.1 ]

Gamma 27 9.4 ( 27i 27 ) M-49 11.2 ( 4 i 4 ) NiA

[ 6.1 -- 12.4 ] ( Sector H, 4.5 mi. ) [ 10.2- 12.1 ]

Special Interest TLDs Ganma 28 9.1(28128) M-0 1 11.2 ( 4 / 4 ) NIA (W Q t r 1 [ 7.1 - 12.1 ] ( Sector E, 3.5 mi. ) [ 9.9 - 12.1 ]

Control TLDs Gamma 4 NIA NIA NIA 10.6 ( 4 1 4 )

(W Q t r 1 [ 9.1 - 12.2 ]

30

TABLE 3.1 Radiolopica1 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 2004 Number of Nonroutine Results

< LLD NIA NIA <LLD 0

<LLD NIA NIA <LLD 0

<LLD NIA N/A <LLD 0

<LLD N/A NIA <LLD 0

<LLD NIA NIA <LLD 0

<LLD N/A NIA <LLD 0

<LLD NIA NIA <LLD 0

<LLD NIA N/A <LLD 0

<LLD NIA NIA <LLD 0

<LLD N/A NIA <LLD 0

<LLD N/A N/A <LLD 0

<LLD N/A NIA <LLD 0

<LLD NIA NIA <LLD 0 31

TABLE 3.1 Radiological Environmental Monitoring Program Summarv Name of Facility: Grand Gulf Nuclear Station Docket No: 50-416 Location of Facility: Claiborne County. Mississippi Reporting Period: January - December 2004 Sample Type Type & Number LLD Indicator Locations Location with Highest Annual Mean Control Locations Number of

( Units ) of Analyses a Mean ( F ) Mean ( F ) Nonroutine L Range 1 IRange I Results Mean ( F )

Location d [ Range ]

Groundwater H-3 2 2000 <LLD NIA NIA <LLD 0

( PC21) 1-131 2 1 <LLD NIA NIA <LLD 0 GS 4 Mn-54 15 <LLD NIA NIA <LLD 0 Fe-59 30 <LLD NIA NIA <LLD 0 co-58 15 <LLD NIA NIA <LLD 0 CO-60 15 <LLD NIA NIA <LLD 0 Zn-65 30 <LLD NIA NIA <LLD 0 Zr-95 30 CLLD NIA NIA <LLD 0 Nb-95 15 CLLD NIA NIA <LLD 0 CS-134 15 <LLD NIA NIA <LLD 0 CS-137 18 <LLD NIA NIA <LLD 0 Ba- 140 60 <LLD NIA NIA <LLD 0 La- 140 15 <LLD NIA NIA <LLD 0 GS 4 CS-134 150 <LLD NIA NIA <LLD 0 (3-137 180 15.48 (112) SEDHAM 15.48 (112) <LLD 0

[One Sample] (Sector N,1.6 Miles) co-60 NIA 17.87 (112) SEDHAM

[One Sample] (Sector N,1.6 Miles) 17.87 (112) 32

TABLE 3.1 Radiological Environmental Monitorhe Program Summary Name of Facility: Grand Gulf Nuclear Station Docket No: 50-416 Location of Faciiity: Claiborne County, iclississippi Reporting Period: January - December 2004 Sample Type Type & Number LLD Indicator Location Location with Highest Annual Mean Control Locations Number of

( Units ) of Analyses a Mean ( F ) Mean(F)C Nonroutine I Range 1 IRange 1 Results Mean(F)C Location d [ Range 1 Fish GS 4

( pCiJkg 1 M11-S 4 130 <LLD NIA NIA <LLD Fe-59 260 <LLD N/A NIA <LLD (20-58 130 <LLD NIA NIA <LLD Co-60 130 <LLD NIA NIA <LLD Zn-6 5 260 <LLD NIA N/A <LLD CS-134 130 <LLD NIA NJA <LLD CS-137 150 <LLD hr/A NIA <LLD Food Products 1-131 10 60 <LLD NIA N/A <LLD

( pCiJkg )

CIS 10 CS-134 60 <LLD N/A NIA <LLD cs-137 80 <LLD NIA N/A <LLD 33

TABLE 3.1 Radiological Environmental Monitorinp Propram Summary Name of Facility: Grand Gulf Nuclear Station Docket No: 50-416 Location of Facility: Claiborne County. Mississippi Reporting Period: Januarv - December 2004 Sample Type Type & Number LLD b Indicator Location Location with Highest Annual Mean Control Locations Number of

( Units ) of Analyses a Mean ( F ) Mean ( F ) Nonroutine

[ Range I [ Range ] Results Mean ( F )

- Location d [ Range I Venison (Special) GS 1 (P C W) Mn-54 130 <LLD NIA NIA NIA 0 Fe-59 260 <LLD NIA NiA NIA 0 CO-58 130 <LLD NIA NIA NIA 0 CO-60 130 <LLD NiA NIA NIA 0 Zn-65 260 <LLD NIA NIA NIA 0 CS-134 130 <LLD NIA NIA NIA 0 CS-137 150 <LLD NIA NiA NIA 0 1-131 5 60 <LLD NIA NIA <LLD 0 Food Products (Special) GS 5 pCi/Kg CS-134 60 <LLD NIA NIA <LLD 0 CS-137 80 <LLD NIA NIA <LLD 0 a = Gross beta; 1-131= Iodine-131; H-3 = Tritium; GS = Gamma scan.

LLD = Required lower limit of detection based on GGNS ODCM Table 6.12.1-3.

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

Where applicable, locations are specified by name, distance from reactor site and meteorological sector.

Nsn-routine results are those which exceed ten times the control station value. If no control station value is available, the result i s considered non-routine if it exceeds ten times the preoperational value for the location.

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

34

Attachment 1 Radiological Monitoring Report Summary of Monitoring Results 35

TABLE OF CONTENTS TABLE 1.1 AIR PARTICULATE FILTER GROSS BETA AND 37 CHARCOAL CARTRIDGE IODINE-131 TABLE 1.2 AIR PARTICULATE FILTER GAMMA 46 TABLE 2.1 T H E ~ M O ~ U ~ ~ N E SDOSIMETERS C~NT 47 TABLE 2.2 THERMOLUMINESCENT DOSIMETERS 48 TABLE 2.3 THERMOLUMINESCENTDOSIMETERS 49 TABLE 3.1 SURFACE WATER GAMMA 50 TABLE 3.2 SURFACE WATER TRITIUM 51 TABLE 4.1 GROUNDWATER GAMMA 52 TABLE 4.2 GROUNDWATER TRITIUM 53 TABLE 4.3 GROUNDWATER IODINE-131 54 TABLE 5.1 SEDIMENT 55 TABLE 6.1 FISH 56 TABLE 7.1 FOOD PRODUCTS 57 TABLE 8.1 SPECIAL SAMPLES 58 TABLE 9.1 INTERLABORATORY COMPARISON 59 36

Table 1.1 Sample Type: Air Particulate Filter and Radioiodine Cartridge Analysis: Gross Beta and 1-13 1 Units: pCi/m' AIR SAMPLE AS-1 PG - GGNS Nearest Community LLD (pCilm"3) AS-1 0.07 0.01 LAB ID START DATE END DATE 1-131 GROSS BETA 20040009 12/30/2003 1/6/2004 < 0.014 0.017 +I- 0.002 20040029 11612004 111312004 < 0.016 0.035 +I- 0.003 20040042 111312004 11'2012004 < 0.017 0.033 +/-0.002 20040074 1/20/2004 1/27/2004 < 0.018 0.044 +/-0.003 20040088 1/27/2004 2/3/2004 < 0.013 0.035 +/- 0.003 20040117 2/3/2004 2/10/2004 < 0.016 0.032 +I- 0.002 20040144 211012004 211712004 < 0.018 0.025 +I- 0.002 20040160 2/17/2004 2124/2004 < 0.014 0.030 +I- 0.002 20040186 2/24/2004 3/2/2004 < 0.015 0.018 +/- 0.002 20040209 3/2/2004 3/9/2004 < 0.016 0.014 +I- 0.002 20040236 3/9/2 004 3/16/2004 < 0.015 0.021 +/- 0.002 20040253 311612004 312312004 < 0.018 0.019 +I- 0.002 20040290 3/23/2004 313012004 < 0.014 0.015 +/- 0.002 20040328 3I 30/2004 4/6/2004 < 0.016 0.020 +I- 0.002 20040363 4/6/2004 4/13/2004 < 0.016 0.018 +/- 0.002 20040377 4/13/2004 4/20/2004 < 0.016 0.023 +I- 0.002 20040405 412012004 412712004 < 0.012 0.020 +I-0.002 20040429 4/27/2004 5/4/2004 < 0.015 0.017 +I- 0.002 37

LLD (pCilm"3) AS-1 0.07 0.01 LAB ID START DATE END DATE 1-131 GROSS BETA 20040483 5/4/2004 511 112004 < 0.016 0.030 +/- 0.002 200405 19 511 112004 511812004 < 0.019 0.01 1 +I- 0.002 20040541 51' 812004 512512004 < 0.016 0.016 +I- 0.002 20040546 5/25/2004 hI112004 < 0.017 0.02 1 +I-0.002 20040576 61112004 6/8/2004 < 0.020 0.019 +I-0.002 20040593 61812004 611512004 < 0.018 0.012 +I- 0.002 20040627 611512004 612212004 < 0.015 0.013 +I- 0.002 20040649 6/22/2004 612912004 < 0.017 0.009 +I- 0.002 20040695 6/29/2004 71612004 < 0.018 0.016 +I- 0.002 200407 10 71612004 7/13/2004 < 0.013 0.015 +I- 0.002 20040765 7/1312004 7!2012004 < 0.013 0.026 +I-0.002 20040798 712012004 712712004 < 0.017 0.024 +I- 0.002 20040840 712712004 81312004 < 0.017 0.029 +/- 0.002 20040869 813/2004 8/1012004 < 0.017 0.032 +I- 0.002 20040889 8110/2004 811712004 0.014 0.025 +1- 0.002 20040893 811712004 812412004 < 0.015 0.019 +I- 0.002 20040929 812412004 813112004 < 0.018 0.016 +I- 0.002 20040936 813112004 9/7/2004 < 0.015 0.024 +/- 0.002 20040977 91712004 911412004 < 0.018 0.018 +I- 0.002 20041003 911412004 9/2 112004 < 0.016 0.018 +I- 0.002 38

D (pCilm"3) AS-1 0.07 0.01 LAB ID START DATE END DATE 1-131 GROSS BETA 20041024 912 112004 912812004 .= 0.017 0.032 +I- 0.002 20041056 912812004 101512004 < 0.016 0.046 +I- 0.003 20041102 101512004 1011212004 < 0.016 0.028 +i- 0.002 2004 1 133 10112/2004 1011912004 < 0.013 0.024 +I- 0.002 2004 1177 1011912004 1012612004 < 0.048 0.042 +I- 0.004 200412 14 1012612004 111212004 < 0.014 0.021 +I- 0.002 20041274 111212004 I11912004 < 0.017 0.023 +/- 0.002 2004 13 19 111912004 1111612004 < 0.014 0.024 +I- 0.002 20041340 1111612004 11123l2004 < 0.016 0.016 +I- 0.002 20041361 11/23/2004 1113012004 < 0.013 0.019 +0.002 I-20041393 1113012004 12/7/2004 < 0.016 0.023 +I- 0.002 20041405 121712004 1211412004 < 0.015 0.019 +I- 0.002 20041445 1211412004 1212112004 < 0.024 0.030 +f- 0.002 20041456 1212112004 12/28/2004 < 0.016 0.024 +I-0.002 Average: 0.023 Maximum 0.046 Minimum: 0.009 39

Table 1.1 Sample Type: Air Particulate Filter and Radioiodine Cartridge Analysis: Gross Beta and 1-1 3 1 Units: pCi/m' AIR SAMPLE AS-3 61VA - GGNS - Control LLD (pCilm"3) -07 0.01 LAF3 ID START DATE END DATE 1-131 GROSS BETA 200400 10 1213012003 11612004 < 0.013 0.017 +/- 0.002 20040030 1I612004 1I1312004 < 0.022 0.03 1 +I- 0.002 20040043 111312004 1l20l2004 < 0.014 0.036 +I-0.003 20040075 112Ol2004 112712004 < 0.014 0.045 +I-0.003 20040054 1I2712004 2/3/2004 < 0.017 0.035 +I- 0.003 20040118 2/3/2004 211012004 < 0.015 0.033 +I- 0.002 20040145 211012004 211712004 < 0.015 0.028 +I- 0.002 20040161 211712004 212 312004 < 0.017 0.031 +I- 0.003 20040187 212312004 31112004 < 0.012 0.019 +I- 0.002 200402 10 31112004 31812004 < 0.015 0.016 +I- 0.002 20040237 3/8/2004 311612004 < 0.017 0.023 +I- 0.002 20040254 311612004 312312004 < 0.020 0.018 +I-0.002 20040291 312312004 313012004 < 0.015 0.015 +I- 0.002 20040325 313012004 41612004 < 0.017 0.013 +I- 0.002 20040364 4/6/2004 411312004 < 0.017 0.013 +I -

0.002 20040378 411312004 412012004 < 0.020 0.027 +I- 0.002 20040406 412012004 412712004 < 0.017 0.020 +I-0.002 20040430 412712004 5/4/2004 < 0.018 0.017 +I- 0.002 40

LLD (pCb'm"3) AS-3 61VA 0.07 0.01 LAB ID START DATE END DATE 1-131 GROSS BETA 20040484 51412004 5111I2004 < 0.017 0.026 +I- 0.002 20040520 511112004 511812004 < 0.019 0.009 +i- 0.002 20040542 511812004 512512004 < 0.018 0.019 +I- 0.002 20040547 512512004 61112004 < 0.014 0.019 +I-0.002 20040577 611I2004 61812004 < 0.015 0.020 +I-0.002 20040594 61812004 611512004 < 0.018 0.012 +I- 0.002 20040628 611512004 612212004 < 0.012 0.013 +I- 0.002 20040650 612212004 612912004 < 0.018 0.009 +I- 0.002 20040696 612912004 7/6/2004 < 0.019 0.015 +/- 0.002 200407 1 1 71612004 711312004 < 0.013 0.029 +I- 0.002 20040766 711312004 712012004 < 0.016 0.026 +I-0.002 20040799 712012004 7/27/2004 < 0.016 0.024 +I- 0.002 20040841 712712004 81312004 < 0.011 0.025 +/- 0.002 20040870 81312004 811Ol2004 < 0.017 0.029 +I- 0.002 20040890 811012004 811712004 < 0.019 0.025 +I- 0.002 20040894 811712004 812412004 < 0.017 0.020 +!- 0.002 20040930 812412004 813 112004 < 0.015 0.016 +I- 0.002 20040937 813 112004 91712004 < 0.016 0.024 +I- 0.002 20040978 91712004 911412004 < 0.025 0.021 +I- 0.002 20041004 911412004 912 112004 < 0.019 0.018 +I- 0.002 41

D (pCilm"3) AS-3 61VA 0.07 0.01 LAB ID START DATE END DATE 1-131 GROSS BETA 20041025 9/21/2004 9/28/2004 < 0.014 0.03 1 +/- 0.002 2004 1057 9/28/2004 101512004 < 0.017 0.038 +i- 0.003 20041 103 101512004 1011212004 < 0.014 0.028 +/- 0.002 2004 1134 1011212004 10119/2004 < 0.014 0.021 +I- 0.002 2004 1178 1011912004 10126/2004 < 0.018 0.020 +I- 0.002 200412 15 1012612004 11/2/2004 < 0.015 0.020 +I- 0.002 20041275 11/2/2004 1119/2004 < 0.010 0.022 +I- 0.002 2004 1320 11/9/2004 11/16/2004 < 0.017 0.024 +I- 0.002 2004 1341 11116/2004 11/23/2004 < 0.018 0.014 +/- 0.002 2004 1362 11/23/2004 11/3012004 < 0.011 0.019 +/- 0.002 2004 1394 11/30/2004 1217/2004 < 0.016 0.023 +I- 0.002 20041406 12/7/2004 12114l2004 < 0.016 0.021 +/- 0.002 2004 1446 1211412004 1212112004 < 0.021 0.029 +I- 0.002 2004 1457 12/2112004 12/2812004 < 0.012 0.024 +I-0.002 Average: 0.023 bfaxirnuin 0.045 Minimum: 0.009 42

Table 1.1 Sample Type: Air Particulate Filter and Radioiodine Cartridge Analysis: Gross Beta and 1-131 Units: pei/m3 AIR SAMPLE AS GGNS - Indicator AS-7UH 0.07 0.01 LAB ID START DATE END DATE 1-131 GROSS BETA 200400 11 1213012003 11612004 < 0.018 0.017 +I- 0.002 20040031 1/6/2004 1/13/2004 < 0.018 0.037 +I- 0.003 20040044 1I 1312004 112012004 < 0.018 0.035 +I-0.003 20040076 1l2012004 1I2712004 < 0.017 0.044 +I-0.003 20040095 112712004 2/3/2004 < 0.016 0.034 +I- 0.003 20040I 19 213i2004 2110l2004 < 0.016 0.032 +i- 0.002 20040146 211012004 2/17/2004 < 0.016 0.027 +/- 0.002 20040162 211712004 2/24/2004 < 0.018 0.032 +I- 0.002 20040188 212412004 31212004 < 0.016 0.017 +I- 0.002 200402 11 31212004 3i912004 < 0.015 0.015 +I- 0.002 20040238 3/9/2004 311612004 < 0.021 0.022 +I- 0.002 20040255 311612004 312312004 < 0.015 0.020 +I-0.002 20040292 312312004 313012004 < 0.018 0.016 +I- 0.002 20040326 313012004 41612004 < 0.015 0.02 1 +i- 0.002 20040365 416i2004 411312004 < 0.014 0.018 +I- 0.002 20040379 411312004 412012004 < 0.014 0.027 +I- 0.002 20040407 412012004 412712004 < 0.017 0.023 +I-0.002 2004043 1 412712004 51412004 < 0.015 0.018 +/- 0.002 43

D (pCilm"3) AS-7UH 0.07 0.01 LAB ID START DATE END DATE 1-131 GROSS BETA 20040485 514l2004 511112004 < 0.016 0.032 +I- 0.003 2004052 1 511112004 511812004 < 0.013 0.014 +1- 0.002 20040543 511812004 512.512004 < 0.017 0.016 +1- 0.002 20040548 512512004 61112004 <: 0.014 0.020 +I-0.002 20040578 6/1/2004 6/8/2004 < 0.017 0.017 +I-0.002 20040595 61812004 6/15/2004 < 0.017 0.012 +1- 0.002 20040629 611512004 612212004 < 0.016 0.01 1 +I- 0.002 20040651 612212004 6/29/2004 < 0.016 0.008 +I- 0.002 20040697 612912004 71612004 < 0.017 0.012 +I- 0.002 200407 12 71612004 711312004 < 0.016 0.017 +I- 0.002 20040767 711312004 712012004 < 0.018 0.025 +I-0.002 20040800 712012004 7/27/2004 < 0.016 0.026 +/- 0.002 20040842 712712004 81312004 < 0.018 0.027 +1- 0.002 20040871 8/3/2004 811012004 < 0.018 0.03 1 +I- 0.002 20040891 811012004 811712004 < 0.017 0.024 +1- 0.002 20040895 811712004 812412004 < 0.014 0.017 +/- 0.002 2004093 1 812412004 813 112004 < 0.017 0.013 +I- 0.002 20040938 813 112004 91712004 < 0.013 0.024 +1- 0.002 20040979 91712004 911412004 < 0.023 0.019 +1- 0.002 20041005 911412004 912112004 .= 0.015 0.014 +I- 0.002 44

D (pCilm"3) AS-7UII 0.07 0.01 LAB ID START DATE END DATE 1-131 GROSS BETA 2004 1026 912 112004 9/2812004 < 0.016 0.029 +I- 0.002 2004 1058 912812004 101512004 < 0.014 0.043 +i- 0.003 20041104 1015l2004 1011212004 < 0.016 0.027 +I- 0.002 20041135 1O i l 212004 1011912004 .= 0.016 0.023 +I- 0.002 20041179 10/1912004 1Of 2612004 < 0.018 0.020 +/- 0.002 20041216 1012612004 111212004 < 0.014 0.020 +/- 0.002 2004 1276 11/2/2004 11/9/2004 < 0.014 0.022 +/- 0.002 2004 1321 11/9/2004 11/16/2004 < 0.016 0.023 +I- 0.002 2004 1342 11/16/2004 1U2312004 < 0.016 0.015 +/- 0.002 20041363 11/23/2004 1113012004 < 0.016 0.016 +I- 0.002 2004 13 95 11/30/2004 12/7/2004 < 0.016 0.022 +I- 0.002 20041407 121712004 12/14/2004 < 0.012 0.021 +I- 0.002 20041447 1211412004 1212112004 < 0.022 0.028 +/- 0.002 20041458 1212112004 12/2812004 < 0.015 0.026 +/-0.002 Average: 0.022 Maximum 0.044 Minimum: 0.008 45

Table 1.2 Sample Type: Air Particulate Filter Analysis: Ganma Isotopic Units: pCi/m3 IR PARTICULATE F LTER QUARTERLY COMPOSITES (GAMMA) - GGNS LD (pCilm"3) 0.05 0.06 AB ID LOCATZON DATE CS-134 CS-137 20040359 AS-1 PG 211312004 < 0.005 < 0.004 20040360 AS-3 61VA 2113/2004 < 0.005 < 0.003 2004036 1 AS-7 UH 211312004 < 0.004 < 0.003 20040748 AS-1 PG 511412004 < 0.004 < 0.004 20040749 AS-3 61VA 511412004 < 0.003 < 0.003 20040750 AS-7 UH 511412004 < 0.003 < 0.004 20041 119 AS-1 PG 811312004 < 0.004 < 0.003 2004 1120 AS-3 61VA 811312004 < 0.005 < 0.003 20041 121 AS-7 UH 811312004 < 0.004 < 0.004 20041499 AS-1 PG 1111212004 < 0.004 < 0.004 2004 1SO0 AS-3 61VA 11l1212004 < 0.004 c: 0.003 2004 1501 AS-7 UH 1111212004 < 0.004 < 0.003 46

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

Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Mean M-16 9.1 10.3 10.5 10.1 10.0 M-17 9.1 9.6 11.3 9.3 9.8 M-19 8.2 9.5 10.7 9.3 9.4 M-21* 11.5 15.2 16.1 14.3 14.3 M-22 7.8 9.7 10.0 10.1 9.4 M-23 6.8 7.9 9.0 7.7 7.9 M-25 7.6 7.2 9.5 7.3 7.9 M-28 8.9 10.0 11.9 10.3 10.3 M-94 8.3 9.2 10.0 9.7 9.3 Outer Ring - Approximately Three (3) to Five (5) Miles from the Site (ODCM Specifications)

Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Mean M-36 7.6 7.9 8.5 9.4 8.3 M-40 6.1 7.2 6.8 7.5 6.9 M-48 ** 9.2 9.1 9.6 9.3 M-49

  • 10.2 10.4 12.1 11.9 11.2 M-50 8.2 9.3 8.8 9.8 9.0 M-55 9.4 10.8 10.1 10.7 10.3 M-57 10.0 10.3 12.4 10.9 10.9
  • Location with highest annual mean.
    • Excluded from reporting, see Sample Deviations Section, TLD.

47

Table 2.2 Sample Type: Thermoluminescent Dosimeters Analysis: G a m a Dose Units: rnredQtr Special Interest Areas - Population Centers & Schools (ODCM Specifications)

Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Mean M-Q1* 9.9 12.1 11.6 11.1 11.2 M-07 8.7 10.6 10.1 10.2 9.9 M-09 8.1 9.6 10.6 9.6 9.5 M-10 7.1 8.5 8.9 8.1 8.1 M-33 7.7 7.8 8.7 7.7 8.0 M-38 7.9 8.4 9.2 8.9 8.6 M-39 8.0 8.2 9.3 9.4 8.7

  • Location with highest annual mean.

48

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 9.1 10.5 12.2 10.7 10.6 49

Table 3.1 Sample Type: surface Water Aialysis: Gamma Isotopic Units: pCi/l SlJRFACE WATER SAMPLES (GAMMA) - GGNS LLD (pCi/l) 15 15 30 15 30 15 30 15 15 18 60 15 LAB ID 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 20040013 MK DOWN 1/6/2004 < 10.71 < 9.92 < 20.05 < 13.84 < 15.42 < 11.50 < 18.61 < 9.84 < 9.73 < 10.22 < 27.20 < 10.47 20040014 MR DOWN GG lihi2004 < 9.25 < 8.99 < 12.12 c: 10.09 .< 22.63 < 9.95 < 16.73 < 11.64 < 10.02 < 10.80 < 30.83 < 13.15 20040017 MRUP 1/6/2004 < 11.14 < 6.84 .c 20.89 < 7.55 < 23.09 < 11.33 < 16.58 < 10.68 < 8.87 < 10.32 < 35.82 < 13.00 2004001 8 MRUP GG 1/6/2004 < 7.70 < 8.52 < 13.79 < 5.87 17.43 < 6.62 < 15.09 < 8.14 < 9.25 < 9.56 < 28.11 < 7.42 20040341 MR DOWN 4/6/2004 < 8.74 <: 7.40 < 16.09 < 7.55 < 18.33 < 8.22 < 8.47 < 11.67 < 8.57 < 6.93 < 27.37 < 14.57 20040343 MRUP 4/6/2004 < 7.94 < 9.98 < 18.40 < 9.94 < 16.64 < 8.86 < 13.00 < 9.20 < 8.93 < 9.40 < 27.12 < 13.56 20040691 MR DOWN 7,612004 < 5.47 < 10.09 < 11.27 < 4.82 < 13.76 < 9.57 < 22.11 < 10.88 9.99 < 10.24 < 33.06 < 8.50 20040693 MRLJP 7/6/2004 < 7.15 < 7.12 < 17.81 < 10.17 < 20.19 < 7.38 < 14.53 < 8.71 < 10.14 .c 9.42 < 33.72 < 13.78 20041098 MR DOWN 10/12/2004 < 10.42 < 11.90 < 20.04 < 4.10 < 19.52 < 7.83 < 15.13 < 9.53 < 8.52 9.67 < 30.10 < 11.23 2004 I 100 MRUP 10/12/2004 < 8.81 < 10.17 < 20.82 < 10.83 4 13.94 < 9.01 < 11.20 < 9.93 < 9.95 < 11.19 < 30.12 < 8.37 20041286 MR DOWN 11/9/2004 :* 10.71 < 7.69 < 12.40 < 7.43 < 12.37 < 13.71 < 15.76 < 11.89 < 12.59 < 11.47 < 46.70 <: 4.49 20041288 MR DOWN GG* 11/9/2004 < 7.88 < 9.94 < 18.23 < 5.05 < 23.42 < 8.85 < 19.13 < 12.56 < 9.81 < 10.03 < 32.43 < 7.40

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

50

Table 3.2 Sample Type: Surface Water Analysis: Tritium Units: pCi/l SURFACE WATER SAMPLES (TRITIUM) - GGNS LLD (pCi/l) 3000 LAB ID LOCATION DATE TRITIUM 200400 15 MR DOWN 11612004 < 591 200400 16 MR DOWN GG 1/6/2004 < 585 20040019 MRUP 1/6/2004 < 578 20040020 MRUP GG 1/6/2004 < 584 20040342 MR DOWN 4/6/2004 < 605 20040344 MRUP 41612004 < 607 20040345 MRDOWN GG 4/6/2004 < 607 20040346 MRUP GG 4/6/2004 < 612 20040692 MR DOWN 7/6/2004 < 568 20040694 MRW 7/6/2004 < 552 20041099 MR DOWN I 011212004 < 571 20041 101 MRUP 10112/2004 < 580 2004 1287 MR DOWN* 11/9/2004 < 589

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

51

Table 4.1 Sample Type: Groundwater Analysis: G a m a Isotopic Units: pCi/l GROUND WATER SAMPLES (GAMMA) - GGNS LL,D (pCi/l) 15 15 30 15 30 15 30 15 18 60 15 LAB ID LOCATION DAT MN-54 C0-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 CS-134 CS137 BA-140 LA-140 2004 1 109 PGWELL 10/13/04 < 9.24 < 8.91 < 20.08 1 9.19 < 17.52 < 13.57 < 17.74 < 11.36 < 10.81 < 34.86 < 8.29 20041112 CONSTWELL 10/13/04 < 9.86 1 10.65 < 19.52 < 9.06 < 21.20 < 14.16 < 17.88 < 10.94 < 11.00 < 37.42 < 12.88 20041115 CONSTWELLGG 10113104 < 9.63 < 9.76 < 20.23 1 11.88 < 28.57 < 14.79 < 17.81 < 11.71 111.99 .: 44.21 < 13.86 20041 116 PGWELL GG 10/13/04 < 5.13 < 9.42 i11.76 1 1002 < 17.32 10.14 < 14.51 < 8.34 <9.12 33.50 < 14.74 "GG" - indicates duplicate sample.

52

Table 4.2 Sample Type: Groundwater Analysis: Tritium Units: pCi/l GROUND WATER SAMPLES ( T TIUM) - GGNS LLD (pCi/l) 2000 LAB ID LOCATION DATE TRITIUM 20041 111 PGWELL 1Oil312004 < 583.70 20041 114 CONSTWELL 1O i 1312004 < 566.08 53

Table 4.3 Sample Type: Groundwater Analysis: Iodine Units: pCi/l GROUND WATER SAMPLES (Iodine-131) - GGNS LLD(pCi/l) 1.o LAB ID LOCATION DATE 1-131 20041 I10 PGWELL 10/13/2004 .<: 0.86 20041 113 CONSTWELL 1011312004 < 0.88 54

Table 5.1 Sample Type: Sediment Analysis: Gamma Isotopic Units: pCi/kg SEDIMIENT SAMPLES (GAMMA) - GGNS LLD (pCilkg) 150 180 N/A LAB ID LOCATION DATE CS-134 CS-137 co-60 20040957 SEDHAM 9/8/2004 < 26.18 <33.24 17.87 +/- 10.26 20040958 SEDCONT 91812004 < 32.10 <32.51 20040969 SEDHAM GG 91812004 < 22.01 15.48-1-1-8.39 20040970 SEDCONT GG 9/8/2004 < 26.28 <37.87 GG - indicates duplicate sample.

55

Table 6.1 Sample Type:

Analysis: Gamma Isotopic Units: pCiikg FISH SAMPLES (GAMMA) - GGNS LLD (pCi/kg) 130 130 260 130 260 130 150 LAB LOCATION DATE MN-54 CO-58 FE-59 CO-60 ZN-65 CS-134 CS-137 2004080 FISHUP 7/27/2004 < 17.84 < 15.03 < 27.47 < 23.62 < 50.74 < 13.39 < 16.99 2004080 FESHW GG 712712004 < 14.15 < 13.39 < 41.14 < 10.39 < 41.85 < 14.39 < 13.85 2004080 FISHDOWN 7/27/2004 < 15.45 < 9.88 < 29.67 < 16.51 < 28.08 < 17.15 < 16.35 2004080 FISHDOWN GG 7/27/2004 20.53 < 18.56 < 28.68 < 19.72 < 47.03 < 17.08 < 16.52 GG - indicates duplicate sample.

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Table 7.1 Sample Type: Food Products Analysis: Iodine-13 1 and Gamma Isotopic Units: pCiikg VEGETATION SAMPLES (GAMMA) - GGNS LLD (pCi/kg) 60 60 80 LAB ID LOCATION DATE 1-131 CS-134 CS-137 2004002 1 VFG-CONT 11712004 < 56.09 < 36.70 < 54.30 20040022 VE G-J 11712004 < 48.72 < 36.09 < 47.60 20040347 VEG-CONT 41612004 < 47.02 < 45.09 < 48.00 20040348 VE G-J 41612004 i42.40 < 51.55 < 51.10 20040349 VEG-CONT GG 41612004 < 59.43 < 45.58 < 54.41 20040350 VE G-J GG 41612004 < 43.54 < 34.04 < 17.35 20040705 VEG-CONT 71612004 < 59.26 < 37.94 < 34.41 20040706 VEG-J 71712004 < 51.88 < 36.63 < 38.78 2004 1077 VEG-CONT 10/512004 < 40.71 < 35.85 < 31.02 2004 1078 VEG-J 101512004 < 35.84 < 42.12 < 36.54 GG - indicates duplicate sample.

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Table 8.1 Sample Type: Special Samples Analysis: Gamma Isotopic Units: pCiikg ECIAL VENISON SAMPLES (GAMMA) - GGNS LLD (pCiikg) 130 130 260 130 260 130 150 LAB SAMPLE ID DATE MN-54 CO-58 FE-59 CO-60 ZN-65 CS-134 CS-137 2004109 VENISON 10/8/2004 < 11.93 < 10.61 < 34.19 < 18.46 < 31.71 < 11.41 < 11.13 ECIAL VEGETATION SAMPLES (GAMMA) - GGNS LLD (pCi/kg) 60 60 80 LAB ID LOCATION DATE 1-131 CS-134 CS-137 20040023 VEG-SPECIAL 1/7/2004 < 51.80 < 35.81 < 32.78 20040351 VEG-SPECIAL 4160004 < 57.65 < 57.09 < 54.30 20040352 VEG-SPECIAL GG 41612004 < 33.13 < 25.68 < 30.59 20040707 VE,G-SPECIAL 7/7/2004 < 59.43 < 38.29 < 46.91 2004 1079 VEG-SPECIAL 10/5/2004 < 24.40 18.70 < 31.52 GG- indicates duplicate sample.

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Table 9.1 Sample Type: Interlaboratory Comparison Analysis: Gross Beta, Tritium, Iodine-13 1 and Gamma Isotopic Sample Type (units) Analytics # Date Analysis Known RBS Value value RANGE Charcoal E4171-125 611712004 1-131 81.9 84 0.361 Cartridge 1

(pcilfilter)

Water E4170-I 25 611712004 BETA 286 251 -1.43 0.028 (pcilliter) E4169-I 25 611712004 CR-51 250 234 -1.09 0.142 MN-54 77.4 84.3 1.55 0.916 CO-58 50.8 46.3 -1.52 0.465 FE-59 48.9 55.3 2.28 0.725 CO-60 189 198 0.86 0.188 ZN-65 109 107 -0.26 0.108 1-131 84.3 87.0 0.55 0.841 CS-134 111 109 -0.36 0.319 CS-137 171 176 0.51 0.069 CE-141 172.00 181 0.94 0.618 E4242-125 911612004 H-3 12000 11685 -0.45 0.224 Air Filter 911612004 BETA 67.7 66.7 -0.26 0.174 E4240-125 (pCilfilter) E4243-125 911612004 CR-51 129 115 -1.83 0.458 MN-54 105 104.7 -0.05 0.338 CO-58 54.8 55.5 0.23 0.614 FE-59 53.0 56.4 1.12 0.256 CO-60 72.5 72.3 -0.05 0.807 ZN-65 103 97.1 -0.99 0.241 CS-134 55.8 50.6 -1.60 0.191 cs-137 124 117 -1.02 0.143 CE-141 145.0 143 -0.20 0.244 Sediment E4241-125 911612004 CR-51 0.348 0.293 -2.72 0.424 (pCilgram) MN-54 0.252 0.264 0.82 0.141 CO-58 0.132 0.128 -0.52 0.492 FE-59 0.127 0.140 1.77 0.558 CO-60 0.174 0.174 0.03 0.339 ZN-65 0.248 0.264 I .09 0.333 CS-134 0.134 0.130 -0.52 0.485 CS-137 0.403 0.426 1.oo 0.132 CE-141 0.348 0.352 0.20 0.424 59

Table 9.1 Sample Type: Interlaboratory Comparison Analysis: Gross Beta, Tritium, Iodine- 131 and Gamma Isotopic Sample Type Analytics # Date Analysis Known RBS Value RBS N-DEV RBS N-(units) Value RANGE Milk E4172-225 6117/2004 CR-51 228 251 1.72 0.181 (pcilliter) MN-54 70.5 74.0 0.86 0.335 CO-58 46.2 46.0 -0.07 0.384 FE-59 44.5 44.4 -0.04 1.818 NOTES:

(a) The known value as determined by Analytics.

(b) The normalized deviation from the known value is computed from the deviation and the standard error of the mean; k2.00 is the warning limit, and 23.00 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;

+2.000is the warning limit and +3.000 is the control limit. This is a measure of precision of the analytical methods.

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Table 9.1 Sample Type: Interlaboratorv Comparison Analysis: Gross Beta, Tritium, Iodine-13 1 and Gamma Isotopic All results were within control limits.

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