ML20206D031
| ML20206D031 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 12/31/1998 |
| From: | Hughey W ENTERGY OPERATIONS, INC. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GNRO-99-00038, GNRO-99-38, NUDOCS 9905030281 | |
| Download: ML20206D031 (68) | |
Text
!
C Entirgy oper.tlons, Inc.
PO. Box 756 Port Geson MS 39150 Tel 601437-6470 W.K Hughey troctor Nucius SaMy & Repsy Affa:rs April 30,1999 U.S. Nuclear Regulatory Commission Mail Station P1-37 Washington, D.C. 20555 Attention: Document Control Desk
Subject:
Grand Gulf Nuclear Station Docket No. 50-416 License No. NPF-29 Annual Radiological Environmental Operating Report for 1998 GNRO-99/00038 Gentlemen:
In accordance with the Grand Gulf Nuclear Station Unit 1 Technical Specification 5.6.2, attached is the Annual Radiolooical Environmental Operatino Report for the period January 1,1998 through December 31,1998.
Yours truly,
/
/
WKH/MJL attachment: 1998 Annual Radiological Environmental Operating Report '
cc: (See Next Page) i
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.. , v 9905030281 981231 PDR ADOCK 05000416 R PDR ,,,,,
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GNRO-99/00038 Page 2 of 2 cc: Ms. J. L. Dixon-Herrity, GGNS Senior Resident (w/a)
Mr. L. J. Smith (Wise Carter) (w/a)
Mr. N. S. Reynolds (w/a) '
Mr. H. L. Thomas (w/o)
Mr. E. W. Merschoff (w/a)
Re0ional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011 Mr. S. P. Sekerak, NRR/DLPM/PD IV-1 (w/2)
U.S. Nuclear Regulatory Commission One White Flint North, Mail Stop 13D18 11555 Rockville Pike Rockville, MD 20852-2378 k
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GNRO-99/00038 bec: Mr. G. C; Coker (w/a)
Mr. R. N. Buckley (w/a)
File (LCTS/RPTS)(w/a)
File (Hard Copy) (w/a)
File (Central) (w/a)( 68 )
Mr. E. S. Fuente (w/a)
Mississippi State Department of Health Division of Radiological Health P. O. Box 1700 Jackson, MS 39205 ccmail:
Mr. C. A. Bottomiller (w/o)
Mr. R. N. Buckley (w/o)
Mr. R. W. Byrd (w/o)
Mr. L. F. Daughtery Mr. G. G. Davie (W3 - LIC) (w/o)
Mr. W. A. Eaton (w/o)
Mr. D. L. Janecek (w/o)
Mr.' M. R. Kansler (ECH) (w/o)
Mr. J. M. Lassetter (w/o)
Mr. J. C. Roberts (w/o)
Mr. J. E. Venable (w/o)
Mr. J. W. Yelverton (Ech) (w/o) e
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GRANDGUIENUCLEARSTATR)N 1998 ANNUAL RADIOLOGICALENVIRONMENTAL OPERATINGREPORT I
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SUMMARY
The Annual Radiological Environmental Operating Report (AREOR) presents Grand Gulf Nuclear Station (GGNS) Environmental Surveillance Program (ESP) data obtained through analyses of environmental samples collected for the period January 1,1998 through December 31,1998. The AREOR fulfills the requirements of GGNS Technical Specification 5.6.2.
Environmental Surveillance Pr_ogtsm GGNS established the ESP in 1978 before the station became operational (1985) to provide data on background radiation and radioactivity normally presentin the area.
GGNS has continued to monitor the environment by sampling air, water, vegetation, sediment and fish, as well as measuring radiation directly. GGNS also samples milk if milk-producing animals are present within five miles of the plant.
The ESP includes sampling indicator and controllocations within an 18-mile radius of the plant. The ESP 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.
l in 1998, GGNS personnel collected environmental samples for radiological analysis. They I compared results of indicator locations with control locations and previous studies, and l concluded that overall no significant relationship exists between GGNS operation and effect on the plant environs. Their review of 1998 data, in many cases, showed undetectable radiation levels in the environment and near background level in significant pathways associated with GGNS.
Harmful Effects or irreversible Dama_gg The ESP monitoring did not detect any harmful effects or evidence of irreversible damage in 1998. Therefore, no analysis or planned course of action to alleviate problems was necessary, i
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Reporting Levels 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,1998 results did not trigger any Radiological Monitoring Program Special Reports.
Radioactivity Not Attributable To GGNS I The GGNS ESP detected radioactivity attributable to other tources 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.
Comparison To Federal and State Proorama GGNS personnel compared ESP 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. J The NRC TLD Network Program was discontinued in 1998. Historically these results have compared to those from the GGNS ESP. GGNS TLD results continue to 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 ESP entall similar radiological environmental monitoring program requirements. These programs include collocated air samples and splitting or sharing sample media such as vegetation, water, sediment, and fish. Both programs have obtained similar results over previous years. ;
Samplina Deviations O Milk The ESP did not include milk sampling within five miles (8 km) of GGNS in 1998 due to unavailability. ODCM Technical Specifications require collection of milk il chem-wm/AREOR9804
Samolina Deviations O Milk, Continued 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.
O Air Samplers The following air sample locations had reduced run times due to weather related outages or mechanical problems. Required LLDs were achieved in all cases. In two cases, sample filters were torn during the collection period as a result of an oil leak that weakened the filter.
LOCATION SAMPLE RUN TIME PROBLEM PERIOD (hh:mm) DESCRIPTION AS1 PG 6I30-7/4 164:32 Weather outage' 7/21 - 7/28 167:50 Oilleak, perforated Filter:
7/28-8/4 169:17 Oilleak, perforated filter
- 10/6-10/13 104:48 Air Sampler (AS) failed
- 11/17-11/24 161:50 Weather outage' ASS-61VA 12/30/97 - 77:43 AS failed' 116/9 8 8/11 - 8/18 166:09 AS failed' AS7-UH 2/24 - 3/3 164:09 Weather outage' 3/10 -3/17 164:24 Weather outage' 3/24 - 3/31 161:16 Weather outage
6/2 - 6/9 165:17 Weather outage" 10/3-10/20 165:43 Weather outage'8 1 Sample period shortened by 03:22
- Oil leak resulted in torn filter, sample collected for entire period 8 Oilleak resulted in torn filter, sample collected for entire period
- Sample period shortened by 62:00 5 Sample period shortened by 06:05 8 Sample period shortened by 86:48 7 Sample period shortened by 01:50 8 Sample period shortened by 03:03 e Sample period shortened by 03:18 10 Sample period shortened by 06:26 11 Sample period shortened by 03:02 12 Sample period shortened by 02:09 lit dem-wonfAREOR9804
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4 Sampling Deviations O Air Samplers, Continued Air samples were collected 99.32 % of the available collection period. Sample failures and weather outages occurred infrequently and did not affect the overall effectiveness of the air monitoring program.-
-O Thermoluminescent Dosimetry (TLD)
)
One TLD was not recovered during 1998. The TLD location is M-33, Sector P,12.5 miles. Construction activities at this special interest location resulted in loss of the TLD.
GGNS personnel conducted all other ESP activities as required by ODCM Specifications without exception.
Program Modifications GGNS made no REMP modifications during 1998. I l
Unavailable Results GGNS received analytical contractor results in adequate time for inclusion in this report. In addition, GGNS' review identified no missing results.
Atlashmenta Attachment I contains results of air, water, vegetation, sediment, and thermoluminescent dosimeter (TLDs) samples collected in 1998. TLDs were analyzed by Waterford til Dosimetry. All remaining samples were analyzed by the River Bend Station (RBS) Environmental Laboratory. Attachment I also contains RBS' participation in the interlaboratory comparison program during 1998.
Attachment 11 contains results of samples collected at special interest areas by GGNS personnel and analyzed by the RBS Environmental Laboratory. Any samples identified with a GG" prefix are duplicates collected and analyzed in addition to the routine ESP.
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TABLE OF CONTENTS PAGE
SUMMARY
i LIST OF TABLES v LIST OF FIGURES v
' LIST OF ATTACHMENTS v l l
SECTION TOPlc PAGE J 1.0 Introduction 1-1 1.1 Environmental Surveillance Program Purpose and 1-1 Design Criteria 1.2 Dose Pathways Associated with GGNS 1-1 l 1.3 Pathways Monitored 1-2 1 1.4 Program Description 1-2 2.0 Environmental Surveillance Program 2-1 2.1 Air Particulate and Radiolodine Sample Results 2-1 )
2.2 Thermoluminescent Dosimetry Sample Results 21 '
2.3 Milk Sample Results 2-4 2.4 Water Sample Results 2-4 2.5 Vegetation Sample Results 2-5 2.6 Sediment Sample Results 2-5 i 2.7 Fish Sample Results 2-7 2.8 Special Sample Results 2-7 2.9 Land Use Census Results 2-7 2.10 Interlaboratory Comparison Results 2-7 3.0 Environmental Surveillance Program Summary 3-1 3.1 1998 Program Results Summary 3-1 1ABLE # UST OF TABLES 1-1 Air Sample Locations 1-8 I
1-2 TLD Locations 1-9 1-3 Milk and Water Locations 1-11 1-4 Vegetation, Sediment and Fish Locations 1 12 2-1 Barge Slip Sediment Analytical Summary 2-6 3-1 Environmental Monitoring Program Summary 3-2 FIGURE # LIST OF FIGURES PAGE 11 Exposure Pathways 1-13 l 12 Sampic Collection Sites-5 Mile Map 1-14 1-3 Sample Collection Sites -10 Mile Map 1-15 2-1 TLD Radiation Dose 2-3 ATTACHMENT # LIST OF ATTACHMENTS PAGE 1 1998 Environmental Sampling and Analytical Report 1-1 ll 1998 Special Sample Results 11-l v
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SECTION
1.0 INTRODUCTION
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E 1.1 Environmental Surveillance Proaram Purpose ansLQasian Criteria GGNS established the ESP to minimize any associated radiation j endangerment to human health or the environment by ensuring that plant operating controls function properly. The ESP purpose involves:
O Evaluating environmental sampling procedures, equipment and techniques.
O Measuring radiation levels and their variations in environmental media in the area surrounding the plant.
O Determining average levels of radiation and radioactive materialin various environmental media.
O Detecting effects,if any, of GGNS operation on the environmental radiation levels and concentrations.
The ESP design criteria includes:
O Analyzing important pathways for anticipated types and quantities of radionuclides released into the environment.
O 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. l 0 Considering the potential radiation exposure to plant and animal life in the environment surrounding GGNS. j O Correlating levels of radiation and radioactivity in the !
environment with radioactive releases from station operation.
1.2 Dose Pathways Associated with GGNS Figure 1 1 shows potential exposure pathways that could occur as a result of a nuclear power plant. However, direct dose from gaseous effluent and thyroid dose from ingesting milk involves the most 1-1 l
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significant environmental dose pathways from a nuclear power station.
GGNS operations have little,if any, impact on these pathways due to i very low levels of radiation released, remote location and absence of milking animals within five miles of GGNS. In addition, the GGNS !
Final Environmental Report lists the first use of drinking water from the Mississippi River as more than 200 miles downstream. Therefore, I GGNS operations have little, if any, impact on this pathway.
1.3 Esthways Monitored j The ESP includes the sampling program for monitoring airborne, waterborne, ingestion and direct radiation pathways as required by Table 6.12.1-1 in the ODCM. GGNS supplements this program with additional sampling in order to provide a comprehensive and well-balanced program.
Tables 1-1 through 1-4 provide a description of the GGNS ESP sample locations. Only sample locations required by the ODCM are keyed to Figures 12 and 13 as shown in the Tables. Section 2.0 of this report provides a discussion of sampling results during the reporting period and Section 3.0 provides a summary of results for the monitored exposure pathways.
1.4 Proaram Descriotion 1.4.1 Air Particulate and Radiolodine The GGNS ESP utilized three continuous air samplers to provide gross beta, gamma and radioiodine activity measurements by the airborne exposure oathway . These air samplers (Figures 1-2 and 1-3, and Table 1-1) met the requirements of ODCM Specification 6.12.1, as follows:
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O One close to the SITE BOUNDARY having the h!ghest calculated annual average ground level DlQ O One in the vicinity of a community having the highest calculated annual average ground level D/Q (Port Gibson)
O One from a control location 15 - 30 km (10 - 20 miles) distance (Vicksburg, MS).
GGNS personnel placed air samplers one meter above the ground in weatherproof houses, with a 47-millimeter glass fiber filter in the intake line l of the vacuum pump and a 2 x 1-inch charcoal cartridge located directly downstream. GGNS personnel maintained air flow at 1.25 cubic feet per minute. They changed filters and cartridans weekly and had them analyzed for gross beta radionuclides and radioiodmo activity, respectively. The analytical laboratory analyzed quarterly composites of air filters for gamma radionuclides.
1.4.2 Thermoluminescent Dosimetry The GGNS ESP measured ambient radiation in the environment surrounding GGNS with 40 TLDs to provide a quantitative measurement of the area radiation levels (Figures 1-2 and 1-3, and Table 1-2). They collected dosimeters quarterly and used the following criteria in establishing TLD locations:
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O ODCM Specification 6.12.1 requires 24 TLDs, positioned as outlined below:
- Eight TLDs located in the general areas of the site boundary.
l - Eight TLDs located approximately 3 to 5 miles from the site.
l - Eight TLDs located in special interest areas such as population centers, nearby residences, schools, and in one or two areas to serve l as control stations.
O Sixteen permanent TLD stations at the protected area boundary.
O The remaining three TLDs utilized as duplicates at varying locations.
1.4.3 Milk ODCM Specifications require the following:
Quarterly sampling frequency for indicator locations, when available, with sampling of the controllocation only occurring when indicator locations are present.
If required, control samples are collected from a location > 8 km (>5 miles) from the plant (Alcorn State University Dairy - Figure 1 3 and Table 1 3) to establish background data. However, the ESP did not include milk animals in the reporting period within 8 km (5 miles) of GGNS due to unavailability. Therefore, Section 1.4.5 of this report addresses the unavailability of milk samples within the vicinity of GGNS.
1.4.4 Surface Water and Groundwater The GGNS ESP measured waterbonne radiction in the environment by sampling surface and ground water.
GGNS personnel sampled surface water from the Mississippi River quarterly at points upstream (control) and downstream (indicator) of the plant discharge (Figure 1-2 and Table 1-3) during the reporting period.
GGNS personnel also collected an annual downstream (indicator) i sample (Figure 1-2 and Table 1-3) during a liquid radwaste discharge.
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GGNS personnel sampled aroundwater annually from two locations (Figure 1 2 and Table 1-3), onsite GGNS Construction Well (indicator) and Port Gibson Cliy (control) during the reporting period. They collected samples in labeled containers and had them analyzed for gamma radionuclides and tritium.
1.4.5 Vegetation During the reporting period, GGNS personnel collected broadleaf vegetation samples quarterly for measurement of radioactivity by the inaestion exoos.gre pathway, due to the unavailability of milk samples within five miles of GGNS as follows:
e Gne kind of broadleaf vegetation grown nearest each of two different offsite locations with highest anticipated annual average ground level D/Q. GGNS met this requirement by maintaining two gardens inside the SITE BOUNDARY, Sectors J and H. These sampling locations (Figure 1 2 and Table 1-4) provided a more conservative assessment of doses due to the higher deposition rates (DlQs) than would be measured at offsite sampling locations, e Control samples of each of the similar types of onsite vegetation 15-30 km from the site. GGNS met this requirement by maintaining a garden at in Sector K at Alcorn State University (Figure 1-3 and Table 1-4) or collecting vegetation from a location near the university.
The ESP prefers green-leafy vegetables suitable for human consumption as the primary source of broadleaf vegetation. At times, GGNS personnel may collect samples of any vegetation with relatively broad leaves on which airborne radioactive particulate material might be deposited, due to unavailability of green-leafy vegetables suitable for human consumption. They had the raw samples analyzed for gamma radionuclides and lodine-131.
1.4.6 Sediment During the reporting period, GGNS personnel collected sediment samples annually at the following locations (Figure 1-2 and Table 1-4):
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- Downstream of the barge slip in the vicinity of the Hamilton Lake i
outfall(indicator) . l e Upstream from the GGNS discharge (Upper Grand Gulf Landing -
control). The ESP utilized additional samples from the barge slip
. (indicator) as part of the special sampling provision.
GGNS personnel collected sediment samples near the shoreline from j the top one-inch layer of sediment. They then discarded foreign objects !
and transferred the samples to clean, labeled containers for gamma j radionuclide analyses.
l 1.4.7 Fish During the reporting period, GGNS personnel collected fish in the Mississippi River at the following locations (Figure 1-2 and Table 1-4): !
I
. Downstream of the GGNS discharge point into the Mississippi River (indicator location) e Upstream of the GGNS discharge point into the Mississippi River i uninfluenced by plant operations (control). ;
GGNS personnel collected fish for measurement of radioactivity by the inoestion exoosure patbv_yJty. The fish were collected by net, trotline, electroshock or purchased from commercial fishermen. GGNS I personnel may accompany commercial fishermen, when purchasing samples, to ensure representative and valid samples are from required locations. GGNS personnel collected a sufficient amount from each location to provide a minimum of 1000 grams (wet weight) of eviscerated fish sample. Samples were analyzed for gamma radionuclides.
1.4.8 Special Samples GGNS personnel collected special samples occasionally from nonroutine ESP locations to provide supplementary data and to address areas of specialinterests. Sample media may include sediment, water, milk, fish, meat and vegetation and may be analyzed for gamma radionuclides, lodine-131, fritium or gross beta radionuclides, depending upon currentinterest.
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1.4.9 Land Use Census GGNS conducts a bi-annual land use census as described in ODCM Specification 6.12.2. This census identifies changes in uses of land in unrestricted areas surrounding GGNS which would require modifications to the ESP or ODCM. The land use census identified important criteria in i each of the 16 meteorological sectors, such as nearest:
e Residence.
- Animal milked for human consumption.
. Garden of greater than 50 m' (500 ft') producing broadleaf vegetation. ;
1 GGNS personnel conduct the land use census by, i e Field surveys in each meteorological sector out to five miles in order to l confirm:
- Nearest permanent residence
- Nearest unoccupied residence ;
- Nearest garden and approximate size
- Nearest milking animal.
. Identifying locations on map, measuring distances to GGNS and recording results on surveillance data sheets.
- Comparing current census results to previous results.
. Contacting the Claiborne County Agent for verification of nearest dairy animals.
The last census was conducted in 1997. The next census will be conducted in 1999.
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TABLE 1-1 AIR SAMPLE LOCATIONS AIR SAMPLER NUMBER FIGURE LOCATION AS-1 PG 1-2 Southeast of GGNS at the Port Gibson City Barn -
(Sector G, Radius 5.5 Miles)
AS-3 61VA 1-3 North-northeast of GGNS on Hwy 61, North of the Vicksburg Airport (Section B, Radius 18 Miles)
AS-7 UH 12 South-southeast of GGNS at the IBEW Union Hall 4
(Section H, Radius 0.5 Miles) i 4
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o TABLE 1-2 TLD LOCATIONS TLD NO. LOCATION FIGURE I SECTOR MILE M-00 Maintained in lead shield during the NOT ___ _
exposure period SHOWN M-01 Across the road from Lake Claiborne 1-2 E 3.5 Entry Gate M-07 AS-1 PG, Port Gibson City Barn 1-3 G 5.5 M-09 Warner Tully Y-Camp 1-2 D 3.5 M-10 Grand Gulf Military Park 1-2 A 1.5 M-14 AS-3-61VA, Hwy 61, North 1-3 8 18.0
<corou > (Control) of Vicksburg Airport M-16 MeteorologicalTower 1-2 A 0.9 M-17 South Side, Grand Gulf Road 1-2 C 0.5 M-19 Eastern SITE BOUNDARY Property lino, 1-2 E 0.5 NNE of HWSA ;
M 21 Near Former Training Center Building 12 J 0.4 l on Bald Hill Road M-22 Former RR Entrance Crossing On Bald 1-2 G 0.5 Hill Road M-23 Gin Lake Road 50 Yards North of Heavy 1-2 q 0.5 ,
Haul Road on Power Pole l M-25 RadialWell Number 1 1-2 N 1.6 l M-28 Former Glodio Residence 1-2 L 0.9 M-31 Duplicate TLD installed Quarterly At Not _._ ___ ,
Varying Locations Shown l M-32 Duplicate TLD installed Quarterly At Not _ ,__._
l Varying Locations Shown l M-33 Newellton, Louisiana Water Tower 1-3 P 12.5 g (Cordrol) .,
M-36 Curve on HW GOB, Point Nearest GGNS 1-2 P 5.0 at Power Pob M-38 Lako Bruin Sute Park, Entrance Road 1-3 M 9.5 M-39 St. Joseph, Louisiana, Aux. Water Tank 1-3 M 13.0 j M-40 Headly Drive, Near River Port Entrance 1-2 K 2.3 M-48 0.4 Miles South on Mount Gomer Road 1-2 K 4.8 on West Side M-49 Fork in Bessie Weathers Road /Shalfer 1-2 H 4.5 Road M-50 Panola Hunting Club Entrance 1-3 8 5.3 M-55 Near in Ingelside Karnac Ferry 1-2 D 5.0 Road /Ashland Road intersection M-57 Hwy 61, Behind the Welcome to Port 1-2 F 4.5 Gibson Sign at Glensdale Subdivision M-60 Duplicate TLD installed Quarterly at Not __ __
Varying Locations Shown M-61 Protected Area Fence Not D Onsite Shown 1-9 cksm-wnVARLOR9804
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M-62 Protected Area Fence Not E Onsite Shown M-63 Protected Area Fence Not N Onsite Shown M-64 Protected Area Fence Not M Onsite Shown M-65 Protected Area Fence Not L Onsite Shown M-66 Protected Area Fence Not K Onsite Shown M-67 Protected Area Fence Not J Onsite Shown M-68 Protected Area Fence Not H Onsite i Shown M-69 Protected Area Fence Not G Onsite Shown M-70 Protected Area Fence Not F Onsite Shown M-71 Protected Area Fence Not C Onsite Shown M-72 Protected Area Fence Not B Onsite Shown M-74 Protected Area Fence Not P Onsite Shown M-76 Protected Area Fence Not A Onsite Shown M-77 Protected Area Fence Not R Onsite Shown M-81 Administration Building Not Q Onsite Shown M-94 Sector R Near Meteorological Tower 1-2 R 0.8 1-10 chem-wnVAREOR9804
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TABLE 1-3 l MILK AND WATER LOCATIONS MILK (CONTROL LOCATION) FIGURE LOCATION ALCONT 1-3 Located South-Southwest of GGNS at Alcorn State (sector K, Radius 10.5 Miles)
SURFACE WATER ,
UPSTREAM 1-2 Atleast 4500 ft upstream of the GGNS discharge point into the Mississippi River to allow adequate mixing of the Mississippi and i Big Black Rivers (Sector Q-R,1.8 Miles) I DOWNSTREAM 1-2 At least 5000 ft downstream of the GGNS discharge point into the Mississippi River near Radial Well No.1 (Section N,1.6 Miles)
MS River Downstream 1-2 Downstream of the GGNS discharge point into the Mississippi River near Radial Well No.1 ,
(Sector N,1.6 Miles) l GROUNDWATER PGWELL 1-2 Port Gibson Wells - Take from distribution system or one of the five wells (Sector G, ,
Radius 5.0 Miles) l Construction Water Well 1-2 GGNS Construction Water Well- Taken from distribution system or the well (Sector P, I Radius 0.4 Miles) l 1-11 dvm-worVAREOR9804
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TABLE 1-4 VEGETATION. SEDIMENT AND FISH LOCATIONS VEGETATION Broadleaf Vegetation 1-2 South of GGNS near former Training Center on Bald Hill Road (Sector J,0.4 Miles) 1-2 South-southeast of GGNS between the former Training Center and the IBEW Union Hall on Bald Hill Road (Sector H,0.4 Miles) 13 Alcorn State University south-southwest of GGNS (Sector K,10.5 Miles) when available, otherwise a location 15-30 km distant SEDIMENT SEDHAM 1-2 Downstream of the GGNS discharge point in the Mississippi River near Hamilton Lake outlet (Sector N,1.6 Miles) !
SEDCONT 1-2 Upstream of the GGNS discharge point in the l Mississippi River (Minimum of 100 yds) l FISH Fish and invertebrates 1-2 Downstream of the GGNS discharge point into the Mississippi River 1-2 Upstream of the GGNS discharge point in to the Mississippi River uninfluenced by plant operations i
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2.1 Air Particulate and Radioiodine Sample Results GGNS did not detect any gamma radionuclides in the quarterly air i particulate composites nor lodine-131 in the radiolodine cartridges during )
the reporting period, as has been the case in previous years. The ESP detected radioactivity in this pathway attributable to other sources twice.
l These include the 25th Chinase 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.
1 Gross beta concentrations during the reporting period for indicator locations ranged from 0.013 - 0.041 pCi/m3with a mean of 0.024 pCi/m3as compared to the controllocations which ranged from 0.003 - 0.040 pCi/m3with a mean of 0.022 pCilin3. This further emphasizes that the airborne pathway continues '.o remain at background levels.
2.2 Thermoluminescent Dosimetry Sample Results Gamma radiation dose in the reporting period compares to previous years as shown in Figure 2-1. This figure shows 1987 - 1998 annual average results for indicator locations compared to the Vicksburg control. This figure indicates that ambient radiation levels have remained at or near background levels.
The ESP recorded the following quarterly TLD doses for ODCM Specification locations during the reporting period:
e Inner ring, mean of 9.0 mrem and range of 3.1 -11.6 mrem e Outer ring, mean of 10.0 mrem and range of 7.9 - 12.0 mrem
. Special interest, mean of 8.9 mrem and range of 6.1 - 11.0 mrem e Control, mean of 10.1 mrem and range of 9.7 - 10.7 mrem.
2-1 chem-uWARLOR9804
e 2.2 Thermoluminescent Dosimetry Sample Results (Continued)
In 1996 GGNS began reporting measured dose as net exposure (field reading less [ transit + shield reading]) normalized to 92 days. Through 1995, GGNS had reported measured doses as gross exposure. This reporting change did not affect the program since GGNS relies on comparison of the indicator j locations to the control as a measure of plant impact. GGNS' comparison of the inner, outer and special interest TLD results to the control indicates that the ambient radiation levels are unaffected by plant operations. Therefore levels continue to remain at or near background.
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l 2.3 Milk Sample Results I GGNS personnel did not collect milk samples within five miles of the GGNS site in the reporting period due to the absence of milking animals. If milk animals are located within 5 miles if GGNS, samples will be collected from those animals as well as from the controllocation Alcorn State University.
When required, analysis will include lodine-131 and gamma radionuclides.
2.4 Water Sample Results Surface Water Gamma radionuclides remained undetectable in the upstream and downstream Mississippi River location which is consistent with preoperational and previous operational years. In addition, gamma radionuclides were undetectable in an annual downstream sample collected during a liquid radwaste discharge. Tritium was detected well below the required LLD value at the downstream location as follows:
- Downstream-one sample: 256 pCill The single tritium value was 87% below the required LLD value of 2000 pCill, therefore, the associated uncertainty and error are high. Based on this and review of historical data, GGNS concluded that concentrations continue to remain at or near background levels at these locations.
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Groundwater GGNS did not detect any gamma radionuclides or tritium in groundwater samples during the reporting period, as has been the case in previous years. Tritium has been detected at control and indicator locations at concentrations well below the required LLD in the past. These results indicate that this pathway has not been affected by plant operations.
2.5 Vegetation Sample Results GGNS did not detect any gamma radionuclides in vegetation samples during the reporting period. Nuclides detected previously at the control and indicator locationa are attributed to the Chernobyl accident and weapons i testing. These results indicate that this pathway has not been affected by plant operations.
2.6 Sediment Sample Results Gamma radionuclides were undetectable in the upstream and downstream Mississippi River location during the reporting period. Cesium-137 was detected in the downstream (Hamilton Lake) during the preoperational years at an average concentration of 295.0 pCilkg. Cs-137 concentrations have decreased and stabilized since this time. GGNS attributes this Cs-137 4 activity at the downstream location to past atmospheric weapons testing.
The probability of this location being affected by plant operations is ramote due to the enormous dilution and sedimentation factors involved with the Mississippi River.
Cobalt-60 was detected at the barge slip location (SEDBAR) during this reporting period. This sample location supplements the REMP and is collected as a special sample as described in Section 1.4.8. Table 2-1 provides an analytical results summary for 1987 through 1998 barge slip sediment samples. GGNS personnel attribute the presence of radioactivity at this location over previous years to buildup of very small amounts of particulates present in liquid discharges. This table shows that radionuclide concentrations in the barge slip sediment are not increasing.
2-5 i
r TABLE 2-1 BARGE SLIP SEDIMENT ANALYTICAL
SUMMARY
YEAR Mn-54 Fe-59 Co-58 Co-60 Cr-51 Cs-134 Cs-137 1987 2205.0 N D** 103.0 799.0 1454.0 87.0 189.0 1988 480.0 N D** 82.0 628.0 777.0 109.0 142.0 1989 734.0 N D** 56.0 736.0 199.0 104.0 159.0 1990 258.0 N D** 39.0 424.0 853.0 N D** 124.0 1991 1252.0 N D** 59.0 1171.0 307.0 N D** 145.0 1992 164.0 N D** N D** 294.0 N D** N D** 76.0 1993 1202.0 53.0 143.0 949.0 471.5 N D** 117.5 1994 396.0 N D** N D** 411.0 N D** N D** 84.5 l 1995 148.5 N D** 42.0 245.0 N D** N D** 82.5 1996 N D** ND** N D** N D** N D** N D** N D**
1997 N D** N D** N D ** N D** N D** N D** N D**
1 1998 N D** N D** N D** 41.3 N D** N D** N D**
Units in picocuries/ kilogram None detected i
2-6
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r 2.7 Fish Sample Results GGNS did not detect any gamma radio tuclides 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.
2.8 Special Sample Results During the reporting period, GGNS personnel collected two special samples and had them analyzed for gamma radionuclides, gross beta radionuclides and/or tritium. Discussion below provides descriptions of special samples collected and their results.
- One mediment sample from the barge slip (SEDBAR)- Cobalt 60 activity detected e One venison sample from on site - no gamma radionuclides detected Results are summarized in Section 3.0.
2.9 Land Use Census Results Census frequency was changed from annual to bi-annual in 1996 due to the stability of the land uses in the 0-5 mile area around the plant. The most I recent census results support this position. The next census will be taken in j 1999.
2.10 Interlaboratory Comparison Results RBS' environmental laboratory analyzed interlaboratory comparison l samples for GGNS. Attachment I contains these results. GGNS' review of I RBS' interlaboratory comparison indicated that 97% of the sample results for accuracy and precision were within the acceptable controllimits of the three normalized deviations. GGNS and RBS' review of sample results j outside the acceptable control limits indicated that there was no impact on previous reported data. Attachment I also provides discussion on sample !
results outside the acceptable control limits.
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3.1 1998 Proaram Results Summary Table 3-1 summarizes required ODCM Specification, special and supplemental ESP sample results for the reporting period. GGNS personnel did not use values reported as less than (<) for determining indicator and controllocation ranges and means. Results from this reporting period are comparable to previous years.
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3 ATTACHMENTI 1998 Environmental Sampling and Analytical Report O
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1-1 i
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a ENVIRONMENTAL (CROSS-CHECK) PROGRAM PARTICIPATION RESULTS 5
gfpe S% M Anahak "Known" Value' V ue N-RA GE' gg E1514-125 9/24/98 Beta 62117.3 55.1 -1.19 0.063 E1599-125 12/10/98 Beta 52117.3 49.9 -0.36 0.012 E1367125 3/12/98 l-131 EWJ (pCl/castridge) 134 1 23.2 135 0.17 0.176 E1401-125 6/11/98 l-131 62 i 10.7 60.4 -0.44 0.219 l E1515-125 9/24/98 l-131 85 i 14.7 86.2 0.25 0.535 E1600-125 12/10/98 l-131 79 t 13.7 78.7 0.07 0.179 l
gg E1364-125 3/12/98 Beta 269 i 69.9 254 -0.63 0.337 j E1365-125 3/12/98 H-3 2398 i 608.6 2405 0.03 0.442 E1366-125 3/12/98 Cr-51 167 1 14.5 157 -2.14 1.415 Mn-54 111 1 9.61 115 1.25 0.213 Fe-59 79i8.66 83.9 1.71 0.780 Co40 71i8.66 73.4 0.83 0.118 Zn-65 118 i 20.4 122 0.64 0.400 1-131 90 i 15.6 93.3 0.64 0.348 Cs-134 7018.60 70.9 0.31 0.224 Cs-137 134 i 11.6 134 0.09 0.088 Co-141 58 i 8.66 59.1 0.39 0.543 E1368-125 3/12/98 Cr-51 167 i 14.5 158 -1.94 1.839 (duplicate) Mn-54 111 1 9.61 118 2.29 0.532 Fe-59 79 i 8.66 78.8 -0.06 0.473 ,
Co-60 71 i 8.66 74.1 1.07 0.508 )
Zn-65 118 i 20.4 120 0.34 0.100 1-131 90115.6 103 2.44 0.912 Cs-134 70 t 8.66 70.5 0.17 0.083 Cs-137 134 i 11.6 137 0.78 0.176 Co-141 58 i 8.66 52.6 -1.88 1.689 E1398-125 6/11/98 Beta 243 2 63.1 224 -0.90 0.292 E1399-125 6/11/98 H-3 6007i1041 5830 -0.51 0.146 E1400-125 6/11/98 Cr-51 150 1 13.0 157 1.62 0.945 Mn-54 121 i 10.5 127 1.62 0.195 Fe-59 52 i 8.66 58.0 2.08 1.016 Co-60 164 i 14.2 174 2.04 0.504 I Zn-65 139 i 24.1 151 1.54 0.297 l-131 62110.7 64.6 0.74 0.200 Cs-134 108 i 9.35 117 2.89 0.438 Cs-137 8018.66 89.0 3.1 28 0.177 Ce-141 113 i 9.79 111 0.51 0.105
ENVIRONMENTAL (CROSS-CHECK) PROGRAM PARTICIPATION RESULTS St@ Dam Anaysk
$[Po "Known" Value' VYue N N E' Water (pcilliter) E1402-125 6/11/97 Cr-51 150 1 13.0 148 -0.46 2.678 (duplicate) MrF54 121 i 10.5 129 2.39 0.293 Fe-59 52 i 8.66 52.8 0.29 0.898 Co40 164 1 14.2 171 1.55 0.288 Zn-65 139 i 24.1 147 1.00 0.382 1-131 62 i 10.7 65.8 1.07 0.343 Cs-134 108 i 9.35 113 1.60 0.766 Cs-137 80 i 8.66 84.3 1.50 0.106 Ce-141 113 1 9.79 115 0.72 0.627 E1512-125 9/24/98 Cr-51 165 i 14.3 139 -5.46* 0.716 Mn-54 66i8.66 66.6 0.22 0 7$2 Fe-59 55 t 8.66 57.2 0.76 1.146 Co40 131 1 11.4 133 0.44 0.451 Zn45 173130 178 0.60 0.068 l-131 79 i 13.7 79.5 0.10 1.622 Cs-134 73 i 8.66 69.3 -1.28 1.087 Cs-137 119 i 10.3 114 1.36 0.099 Ce-141 129 i 11.2 129 0.00 0.733 E1516-125 9/24/98 Cr-51 165 i 14.3 144 -4.48* 1.933 (duplicate) Mn-54 66 i 8.66 64.5 -0.51 0.154 I Fe-59 55 i 8.66 63.0 2.78 0.543 1 Co40 131 i 11.4 130 -0.35 0.631 Zn45 173 i 30 173 -0.03 0.376 l-131 79 i 13.7 83.7 1.04 0.965 Cs-134 73 i 8.66 64.2 -3.06* 1.051 Cs-137 119 1 10.3 111 2.33 0.298 Ce-141 129 2 11.2 128 -0.18 1.557 E1597-125 12/10/98 Cr-51 1020 1 88.3 1039 0.66 0.556 Mn-54 147 1 12.7 156 2.12 0.643 Fe-59 153 1 13.3 164 2.41 0.849 Co-60 185 i 16.0 191 1.19 0.255 Zn45 145 1 25.1 143 -0.20 0.041 1-131 64 i 11.1 62.0 -0.53 0.803 Cs-134 228 i 19.8 232 0.56 0.259 Cs-137 190 i 16.5 198 1.40 0.062 Ce-141 774 i 67.0 798 1.09 0.336
)
ENVIRONMENTAL (CROSS-CHECK) PROGRAM PARTICIPATION RESULTS Sample Type Study Date Analysis RBS RBS RBS (unitsf ,,Known" Value' Value N-DEV* N-RANGE' Water (pCl/ liter) E1601-125 12/10/98 Cr-51 1020 t 88.3 1063 1.47 0.208 (duplicate) Mn-54 147 1 12.7 157 2.36 0.402 Fe-59 153 i 13.3 182 6.57' 1.235 Co40 185 i 16.0 192 1.25 0.639 Zn-65 145 t 25.1 149 0.48 1.141 1-131 642 11.1 69.7 1.55 0.535 Cs-134 228
- 19.8 246 2.79 0.311 Cs-137 190 1 16.5 197 1.28 0.870 Ce-141 774 i 67.0 796 1.00 0.412 geng E1513-125 9/24/98 Cr-51 0.352 1 0.030 0.344 -0.79 1.054 Mn-54 0.140 1 0.012 0.154 3.41' O.894 Fe-59 0.13e t 0.010 0.118 -0.42 1.003 Co-60 0.281 i 0.024 0.291 1.25 0.555 Zn.65 0.369 i 0.064 0.383 0.64 0.311 Cs-134 0.156 1 0.014 0.149 -1.61 1.128 Cs-137 0.381 1 0.033 0.371 -091 0.353 Ce-141 0.275 t 0.024 0.279 0.51 0.872 E1598-125 12/10/98 Cr-51 1.78 1 0.154 1.680 -1.95 0.604 Mn-54 0.259 1 0.022 0.273 1.90 1.086 l Fe-59 0.269 t 0.023 0.263 -0.75 0.580 f
Co-60 0.324 1 0.028 0.332 0.86 0.620 Zn-65 0.255 1 0.044 0.267 0.82 0.896 Cs-134 0.400 1 0.035 0.371 -2.54 0.372 Cs-137 0.460 t 0.040 0.484 1.84 0.452 Ce-141 1.360 1 0.118 1.356 -0.10 0.903 NOTES:
(a) The "known" values are listed with a range reflecting control (3 sigma) limits.
(b) The normalmed deviation from the '*hnown" value is computed from the deviation and the standard error of the mean; 12.000 is the waming limit and 23 000 is the controllimit. This is a measure of accuracy of the analytical methods.
(c) The normalmed range is computes from the mean range, the control limit. and the standard error of the range; +2.000 is the wameng limit and +3.000 is the controllimit. This is a measure of precision of the ana% cal methods.
(d) The results reported were out of the controllimits, refer to the discussion on program exceptions.
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Programs Exceptions:
There were six results out of control limits (3 sigma) for accuracy in the 1998 cross-check program. Of these six out of control limit results, all were analyzed by gamma spectroscopy (5 nuclides in two matrices). Five of the results in question were in liquid cross-check samples, one in a sediment sample. All six results in question were bias high.
There was a single result for Mn-54 in sediment out of control limits, with a slight high bias (+1.68) trend indicated after review of only six results in the past three years.
Review of the cross-check results for three years (23 results) indicated a low bias (-1.11) for Cr-51 in water, even though there were only two results out of control limits. The review also indicated a slight high bias (+1.91) for Fe-59 in water over the same three year period. Cs-134 and Cs-137 results in water indicate no trends over the three year period Investigation of high bias results in the past indicated it was due to coincidence summing effects of Y-88 and Co-60 on the efficiency curve in the effected region. To minimize the coincidence summing effects on the efficiency curve, RBS added two additional nuclides (Mn-54 and Zn-65) to the set ofliquid calibration sources. Cross-check samples for 1998 were not analyzed using the new nuclide mix since the new sources were not purchased until the end of 1998. New gamma efYiciency curves have been established using the new nuclide mix sources, and will be used to analyze cross-check samples in 1999.
'Ihere is no impact on past data indicated by these cross-check program exceptions.
Environmental samples are analyzed and reponed with a 95% confidence level that the analytical result with its associated error encompasses the "true" value. Ninety-seven percent of RBS environmental cross-check results are within control limits for accuracy and precision.
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ATTACHMENT 11 1998 Special Sample Results 4
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