GNRO-2002/00034, 2001 Annual Radiological, Environmental Operating Report (AREOR)

2001 Annual Radiological, Environmental Operating Report (AREOR)

ML021200537
Person / Time
Site:	Grand Gulf
Issue date:	04/25/2002
From:	Bottemiller C Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GNRO-2002/00034
Download: ML021200537 (75)

Text

Waterloo Road P.O. Box 756 Port Gibson, MS 39150 Tel 601 437 6299 rles iller Manager Plant Licensing April 25, 2002 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Attention: Document Control Desk

Subject:

2001 Grand Gulf Nuclear Station (GGNS) Annual Radiological Environmental Operating Report (AREOR)

Grand Gulf Nuclear Station Docket No. 50-416 License No. NPF-29 GNRO-2002100034 Gentlemen:

In accordance with the Grand Gulf Nuclear Station Unit 1 Technical Specification 5.6.2, attached is the Annual Radiological Environmental Operating Report for the period January I,2001 through December 31, 2001.

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

Yours truly, CAB/M JL attachment: 2001 Annual Radiological Environmental Operating Report cc: (See Next Page)

April 25, 2002 GNRO-2002100034 Page 2 of 2 Mr. E. W. Merschoff (w/2) ALL LETTERS Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011 U.S. Nuclear Regulatory Commission ALL LETTERS - U.S. POSTAL ATTN: Mr. S. P. Sekerak, NRR/DLPM (w/2) SERVICE MAIL DELIVERY ATTN: FOR ADDRESSEE ONLY ADDRESS ONLY ATTN: U.S. Postal Delivery Address Only Mail Stop 07Dl Washington, D.C. 20555-0001 Mr. R. W. Goff (w/a) AREOR REPORT Mississippi State Department of Health Division of Radiological Health P. 0. Box 1700 Jackson, MS 39205

GRAND GULF NUCLEAR STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 2001 Prepared by:

Reviewed by:

Approved b

TABLE OF CONTENTS

SUMMARY

1 1 .O INTRODUCTION 1 .I Radiological Environmental Monitoring Program 1.2 Pathways Monitored 1.3 Land Use Census 2.0 INTERPRETATION AND TRENDS OF RESULTS 19 2.1 Air Particulate and Radioiodine Sample Results 19 2.2 Thermoluminescent Dosimetry (TLD) Sample Results 19 2.3 Water Sample Results 21 2.4 Sediment Sample Results 21 2.5 Milk Sample Results 21 2.6 Fish Sample Results 21 2.7 Food Product Sample Results 22 2.8 Land Use Census Results 22 2.9 Interlaboratory Comparison Results 30 3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

32 3.1 2001 Program Results Summary 32

-i-

LIST OF TABLES TABLE 1.1 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM 8 TABLE 2.1 LANDUSECENSUS 25 TABLE 3.1 RADIOLOGICAL ENVIRONMENTAL MONITORING 33 PROGRAM

SUMMARY

LIST OF FIGURES FIGURE l-1 EXPOSURE PATHWAYS 16 FIGURE I-2 SAMPLE COLLECTION SITES - NEAR FIELD 17 FIGURE I-3 SAMPLE COLLECTION SITES - FAR FIELD 18 FIGURE 2-1 TLD READINGS 20 FIGURE 2-2 BARGE SLIP SEDIMENT 31

- 111 -

LIST OF ATTACHMENTS ATTACHMENT 1 2001 RADIOLOGICAL MONITORING REPORT 38

SUMMARY

OF MONITORING RESULTS

- iv -

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, 2001 through December 3 1, 2001. This report fulfills the requirements of GGNS Technical Specification 5.6.2.

During 2001, Manganese-54, Cobalt-60 and Cesium-137 were detected in the special sediment sample collected from the barge slip. GGNS review of results from this area indicates the following:

l Presence of radioactivity at this area is attributed to materials present in the liquid discharges.

l Cesium-137 is attributed to past atmospheric weapons testing.

l Levels of radioactivity are stable in comparison to previous years.

To supplement the REMP, GGNS personnel collected duplicate surface water, ground water and fish samples during 2001. Special samples collected in 2001 included venison. GGNS did not detect any plant-related radionuclides in these samples.

Radiological Environmental Monitoring Program GGNS established the REMP in 1978 prior to the station becoming operational (1985) to provide data on background radiation and radioactivity normally present in the area. GGNS has continued to monitor the environment by sampling air, water, sediment, fish and food products, as well as measuring radiation directly. GGNS also samples milk if commercial milk production is occurring within five miles of the plant.

The REMP includes sampling indicator and control locations within an 18-mile radius of the plant. The REMP utilizes indicator locations near the site to show any increases or buildup of radioactivity that might occur due to station operation, and control locations farther away from the site to indicate 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 enviromnent.

In 2001, 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 2001 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 DamaPe The REMP monitoring did not detect any harmful effects or evidence of irreversible damage in 2001. Therefore, no analysis or planned course of action to alleviate problems was necessary.

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, 2001 results did not trigger any Radiological Monitoring Program Special Reports.

Radioactivity Not Attributable to GGNS 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 to those Tom the GGNS REMP. 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 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.

Sample Deviations

+ Milk The REMP did not include milk sampling within five miles (8 km) of GGNS in 2001 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 All LLDs during this reporting period were within the acceptable limits required by the technical specifications.

+ Air Samples The following air sample locations had reduced run times due to weather-related outages or mechanical problems. However, required LLDs were achieved in all cases. As described in footnote (a) to ODCM Specification Table 6.12. l-l, deviations are permitted from the required sampling schedule due to malfunction of sampling equipment and other legitimate reasons.

Location Sample period Run Time Problem Comment (hr) Description ASl-PG 09/l 8102- 09/25/02 166.99 Power outage Sample period shortened by 00:32

Air Samples (contd)

Based on the total sample collection period being reduced by 6.95 hours0.0011 days <br />0.0264 hours <br />1.570767e-4 weeks <br />3.61475e-5 months <br /> as a result of these deviations, air samples were collected 99.92 % of the available time.

TLDs TLD station M-48 (Mont Gomer Road) was displaced by unknown causes from its designated location for a brief period during the first quarter of 2001. Upon notification from a citizen that the TLD had been found, GGNS personnel returned the TLD to its designated location. Although exposure during the displaced period is unknown, GGNS review of third quarter results for this TLD indicate no impact from the displacement.

Missed Samples In 2001, there were no missed samples.

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

Prowam Modifications ODCM Table 3.0-2, which lists REMP sampling locations, was modified in 2001. One of two sample locations for food products was deleted from the table. The more conservative location was retained. The location retained ensures the highest probability of detection of radioactive material deposited from gaseous effluents. This modification was implemented in ODCM Revision 23.

Attachments contains results of air, TLD, water, sediment, fish, food products and special samples collected in 2001. TLDs were analyzed by Waterford- Dosimetry. All remaining samples were analyzed by River Bend Stations (RBS) Environmental Laboratory. also contains RBS participation in the interlaboratory comparison program during 200 1.

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

l Analyzing important pathways for anticipated types and quantities of radionuclides released into the environment.

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

l Correlating levels of radiation and radioactivity in the environment with radioactive releases from station operation.

1.2 Pathways Monitored The airborne, direct radiation, waterborne and ingestion pathways, as seen in Figure l-l, 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 l-2 and l-3. GGNS may supplement this program with additional sampling in order to provide a comprehensive and well-balanced program. Only sample locations required by the ODCM are shown in Figures l-2 and l-3.

Section 2.0 of this report provides a discussion of 2001 sampling results with Section 3 .Oproviding a summary of results for the monitored exposure pathways.

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 important criteria during this census is to determine location in each sector of the nearest:

1) Residence

2) Animal milked for human consumption

3) Garden of greater than 50 m2 (500 ft2) producing broadleaf vegetation.

Land Use Census (eontd)

GGNS personnel conduct the land use census by:

l Field surveys in each meteorological sector out to five miles in order to confirm:

P Nearest permanent residence P Nearest unoccupied residence

> Nearest garden and approximate size

> Nearest milking animal.

6 Identifying locations on map, measuring distances to GGNS and recording results on surveillance data sheets.

l Comparing current land use census results to previous results.

l Contacting the Claiborne County Agent for verification of nearest dairy animals.

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 Radioiodine and Particulates Airborne 1 sample close to the SITE AS-7 UH (Sector H, Radius 0.5 Miles) - Continuous sampler operation Radioiodine Cannister - l-l 31; BOUNDARY having the highest South-southeast of GGNS at the IBEW Union Hall. with sample collection per 7 7 days calculated annual average groundlevel D/Q. days or as required by dust 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-l 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 general M-16 (Sector A, Radius 0.9 Miles) - 92 days Gamma dose: 92 days areas of the SITE BOUNDARY. Meteorological Tower.

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

South Side, Grand Gulf Road.

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

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

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 ~

Radiation An inner ring of stations in the general M-21 (Sector J, Radius 0.4 Miles) - Near 92 days Gamma dose; 92 days areas of the SITE BOUNDARY. Former Training Center Building on Bald Hill Road.

M-22 (Sector G, Radius 0.5 Miles) -

Former RR Entrance Crossing On Bald Hill Road.

M-23 (Sector Q, Radius 0.5 Miles) - Gin Lake Road 50 Yards North of Heavy Haul Road on Power Pole.

M-25 (Sector N, Radius 1.6 Miles) -

Radial Well Number 1.

M-28 (Sector L, Radius 0.9 Miles) -

Former Glodjo Residence.

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

Sector R Near Meteorological Tower.

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.

9

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 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) - Panola Hunting Club Entrance.

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

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

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) 10

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 8 stations in special interest areas M-14 (Sector B, Radius 18.0 Miles) - AS 92 days Gamma dose; 92 days Radiation 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)

Sixteen permanent TLD stations at the M-61 (Sector D, Onsite) - Protected Area protected area boundary (these are in Fence.

addition to ODCM requirements).

M-62 (Sector E, Onsite) - Protected Area Fence.

M-63 (Sector N, Onsite) - Protected Area Fence.

M-64 (Sector M, Onsite) - Protected Area Fence.

11

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 Sixteen permanent TLD stations at the M-65 (Sector L, Onsite) - Protected Area 92 days Gamma dose; 92 days protected area boundary. Fence.

M-66 (Sector K, Onsite) - Protected Area Fence.

M-67 (Sector J, Onsite) - Protected Area Fence.

M-68 (Sector H, Onsite) - Protected Area Fence.

M-69 (Sector G, Onsite) - Protected Area Fence.

M-70 (Sector F, Onsite) - Protected Area Fence.

M-71 (Sector C, Onsite) - Protected Area Fence.

M-72 (Sector B, Onsite) - Protected Area Fence.

M-74 (Sector Q, Onsite) - Protected Area Fence.

M-76 (Sector A, Onsite) - Protected Area Fence.

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 Direct TLDs Sixteen permanent TLD stations at the M-77 (Sector R, Onsite) - Protected Area Fence. 92 days Gamma dose; 92 days Radiation protected area boundary.

M-81 (Sector P, Onsite) - Protected Area Fence.

m Three TLDs utilized as duplicates at M-31 (Sector Varies, Radius Varies) - Duplicate varying locations (these are in addition TLD Installed Quarterly At Varying Locations.

to ODCM requirements).

M-32 (Sector Varies, Radius Varies) - Duplicate TLD Installed Quarterly At Varying Locations.

M-60 (Sector Varies, Radius Varies) - Duplicate TLD Installed Quarterly At Varying Locations.

Waterborne Surface Water 1 sample upstream. MRUP (Sector Q - R, Radius 1.8 Miles) - At least 92 days Gamma isotopic and tritium 4500 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. I.

1 sample downstream during a Liquid MRDOWN (Sector Q - 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.

13

Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Waterborne Groundwater Samples from 2 sources. PGWELL (Sector G, Radius 5.0 Miles) - 366 days Gamma isotopic and tritium Port Gibson Wells - Take from distribution analyses; 366 days system or one of the five wells.

CONSTWELL (Sector P, 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 l-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) >8 km if milk is available. Located South-southwest of GGNS at Alcorn State University.

14

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 fisJ 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 l-131; 92 grown in one of two different offsite of GGNS near former Training Center on locations with highest anticipated Bald Hill Road. days annual average ground level D/Q if milk sampling is not performed.

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

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

15

FIGURE l-l EXPOSURE PATHWAYS FIGU~ l-l Exposure Pathways LlQfflD ffFlUEHT3 If Of rcc t dfrtfon

-IF!?

Fuel ind W&str 16

FGURE l-2 SAMPLE COLLECTION SITES - NEAR FIELD 17

FIGURE 1-3 SAMPLE COLLECTION SITES - FAR FIELD

2.0 Interpretation and Trends of Results 2.1 Air Particulate and Radioiodine Sample Results GGNS did not detect any gamma radionuclides in the quarterly air particulate composites or Iodine-l 3 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 gamrna radionuclides, gross beta activity is attributed to naturally occurring radionuclides.

2.2 Thermoluminescent Dosimetry Sample Results GGNS reports measured dose as net exposure (field reading less [transit + shield reading]) normalized to 92 days and relies on comparison of the indicator locations to the control as a measure of plant impact. Gamma radiation dose in the reporting period is compared to control location readings and indicator historical readings for previous years as shown in Figure 2-l.

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 the ambient radiation levels are unaffected by plant operations. Levels continue to remain at or near background.

19

Figure 2- 1 1996-2001 TLD Readings 8.0 6.0 4.0

• Q&1,2001 oQtr2,20C 2.0 0.0 20

2.3 Water Sample Results Analytical results for 2001 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 radionuclides and tritium. Gamma 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 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 radionuclides and tritium. GGNS did not detect any gamma 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 2001.

2.4 Sediment Sample Results Sediment samples were collected from two ODCM Specification locations (indicator and control) and analyzed for gamma radionuclides. In 2001, gamma radionuclides were below detectable limits in the upstream and downstream locations, which is consistent with the preoperational and operational monitoring periods. Therefore, GGNS concluded that. plant operations had no significant impact on this pathway during 2001.

Manganese-54, Cobalt-60 and Cesium-137 were detected at the onsite barge slip location during this reporting period. This sample location supplements the REMP and is collected as a special sample. GGNS personnel attribute the presence of radioactivity at this location years to buildup from materials present in liquid discharges. Figure 2-2 shows that radionuclide concentrations in the onsite barge slip are consistent with the composition of the plant liquid releases and are not increasing at a significant rate.

2.5 Milk Sample Results GGNS personnel did not collect milk samples within five miles of the site in the reporting period due to the absence of milking animals. Since there are no dairies within five miles of the GGNS, it is concluded GGNS operation had no impact on this pathway in 2001.

2.6 Fish Sample Results Fish samples were collected from two locations (indicator and control) and analyzed for gamma radionuclides. GGNS did not detect any gamma radionuclides in fish samples during the reporting period, as has been the case in preoperational and 21

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 when available from control and indicator locations in 2001 and analyzed for Iodine-l 3 1 and gamma radionuclides. GGNS did not detect any gamma radionuclides in vegetation samples during the reporting period. Nuclides detected previously at the control and indicator locations are attributed to the Chernobyl accident and weapons testing. These results indicate that this pathway has not been affected by plant operations.

A special sample of venison was collected on the GGNS property during 2001 to supplement the REMP. GGNS did not detect any gamma radionuclides in this sample.

2.8 Land Use Census Results Prior to the 2001 land use census, Environmental Sample Location Maps were used to determine distances and sectors. In 2001 a Global Positioning System (GPS) was purchased to improve distance readings and determine degrees from true north (sectors). The GPS used was the Garmin etrex. Waypoints for locations of interest were marked using the GPS and transferred to commercial GPS software, ExpertGPS ver 1.08, TopoGrafix. The points of interest were overlaid onto aerial photographs and verified, i.e. waypoints were at the expected location, usually on driveways or front door area of houses. Some waypoints were adjusted by moving them from the driveway area to the house roof on the aerial map. Distances and sectors were determined by using the softwares waypoint report with metric units for distances.

The report was exported to Excel and metric units were converted to statute miles using 1609.344 or 1.609344 depending on whether the units were in meters or kilometers.

22

2.8 Land Use Census Results, continued Methods utilized in the 2001 Land Use Census included: visual surveys, door to door surveys, telephone interviews, GPS, Aerial Photography, 911 address system and consultation with the local county agent concerning dairy production in Claibome County.

During the survey the following questions were asked:

1). Name of occupant 2). Address 3). Number of people residing at residence 4). Age group of occupants 5). Any farm animal raised for human consumption 6). Any dairy production 7). Maintain a garden Changes from the 1999 Land Use Census were evaluated and the differences were compared to the locations and assumptions used in calculations for compliance with the Offsite Dose Calculation Manual (ODCM), LCO 6.11.6. It was determined that the locations and assumptions currently used in ODCM, Revision 23, are more conservative than any of the changes. Other determinations from the 2001 Land Use Census results are:

The closest child age group is in Sector A (North) at 1.78 miles, GGNS ODCM calculations currently uses a default child in the highest D/Q Sector, L (Southwest) at 0.89 miles. During the census interviews no infants were reported and no milk pathway exist within 5 miles.

In no case will the occupancy of an existing unoccupied residence cause any ODCM calculation results to be less conservative.

No additional sampling locations are required as the onsite garden/vegetation sampling location (Sector J, 0.4 miles) is more conservative than changes identified in the land use census.

Cattle are raised for human consumption (Sector H, J, and K). GGNS includes the Grass/Cow/Meat pathway in ODCM dose calculations.

The milk pathway does not need to be activated, no dairy production is occurring within 5 miles.

23

2.8 Land Use Census Results, continued

. Sectors M, N, P and Q are remote areas primarily used for hunting. Area was surveyed by vehicle, aerial photographs and 911 address data. Also, all areas in Louisiana within 5 miles belong to the Winter Quarters exclusive hunting club.

Personnel at entrance gate were interviewed and responded, No permanent residence or gardens, the area is posted.

. Gardens, regardless of size, were included in the census data.

24

Table 2-1 2001 Land Use Census Results Parameter Sector A

• Sector B

• Sector C

• Sector D

• I. Nearest Occupied a. Distance (mile) 0.94 0.83 0.67 2.57 Residence b. Name M Dotson Lane11Frazier E. Johnson R. Brent

c. Address 1022 Frazier Rd 9160 Grand Gulf Rd 4004 Y-Camp Rd 1020 Frazier Rd Port Gibson,MS Port Gibson,MS Port Gibson,MS Port Gibson,MS

d. Degrees from true north 15.1 42.1 60.5 8.8 II. Nearest Unoccupied a. Distance (mile) None None None None Residence (closer than occupied residence)

III. Nearest Milk Animal a. Distance None None None None

b. Owners Name IV. Nearest Broadleaf a. Distance (mile) 1.78 None 0.67 2.66 Garden b. Owners Name Channel1 Lane11Frazier C. Moore

c. Address 10 16 Back Grand Gulf 9 160 Grand Gulf Road 3044 Y-Camp Rd Road Port Gibson,MS Port Gibson,MS

d. Garden size (ft2) Port Gibson, MS 7 100 P 500

=lOO

e. Degrees from true north 42.1 70.3 352.2 V. Census Comparison a. Is nearest occupied residence in same location as last census? No YeS YeS No

b. Is nearest milk animal in same location as last census? NIA N/A N/A N/A

c. Is nearest broadleaf garden in same location as last census? YeS N/A Yes No

• Change from last census, see attached table of 1999-2001 Land Use Census Changes 25

Table 2-l 2001 Land Use Census Results Parameter Sector E

• Sector F

• Sector G

• Sector H

• I. Nearest Occupied a. Distance (mile) 0.88 2.25 2.10 1.11 Residence b. Name V. Ward J. Smith R. Crib D. Dowell

c. Address 8 180 Grand Gulf Rd Grand Gulf Rd 2038 Bald Hill Rd 4065 Bald Hill Rd Port Gibson,MS Port Gibson,MS Port Gibson,MS Port Gibson,MS

d. Degrees from true north 90.5 101.5 129.7 152.5 II. Nearest Unoccupied a. Distance (mile) 0.83 None 1.93 1.08 Residence (closer than J. Trimble Hawthorne House Dowel1 occupied residence) 8 178 Grand Gulf Rd 4066 Bald Hill Rd Occasional Use III. Nearest Milk Animal a. Distance None None None None

b. Owners Name IV. Nearest Broadleaf a. Distance (mile) 0.89 2.25 3.88 4.39 Garden b. Owners Name H. Wells J. Smith D. Mahoney Unknown

c. Address 8 175 Grand Gulf Rd Grand Gulf Rd 1088 Oil Mill Rd 1115 ShaferRd(1)

Port Gibson,MS Port Gibson,MS Port Gibson,MS Port Gibson,MS

d. Garden size (ft2) =lOO =lOO z 100 E500

e. Degrees from true north 86.9 101.5 129.1 155.4 V. Census Comparison a. Is nearest occupied residence in same location as last census? No Yes Yes Yes

b. Is nearest milk animal in same location as last census? N/A N/A N/A N/A

c. Is nearest broadleaf garden in same location as last census? YeS No Yes No

• Change from last census, see attached table of 1999-2001 Land Use Census Changes (1) Posted address is 1043 Shafer, 911 Emergency Response System address is 1115.

26

Table 2-l 2001 Land Use Census Results Parameter Sector J

• Sector K

• Sector L

• Sector M I. Nearest Occupied a. Distance (mile) 3.16 2.23 0.89 None Residence b. Name Humphries J. Cassell Jr. B. Roddey

c. Address 6033 Rodney Rd 2044 Waterloo Rd 6043 Bald Hill Rd Port Gibson,MS Port Gibson,MS Port Gibson,MS

d. Degrees from true north 174.3 196.9 219.7 II. Nearest Unoccupied a. Distance (mile) None None None None Residence (closer than occupied residence)

III. Nearest Milk Animal a. Distance None None None None

b. Owners Name IV. Nearest Broadleaf a. Distance (mile) 3.16 2.23 0.89 None Garden b. Owners Name Humphries J. Cassell Jr. 8. Roddey

c. Address 6033 Rodney Rd 2044 Waterloo Rd 6043 Bald Hill Rd Port Gibson,MS Port Gibson,MS Port Gibson,MS

d. Garden size (ft2) E 100 a 500 E 100

e. Degrees from true north t 74.3 196.9 219.7 V. Census Comparison a. Is nearest occupied residence in same location as last census? YeS Yi% Yes N/A

b. Is nearest milk animal in same location as last census? N/A N/A NIA NIA

c. Is nearest broadleaf garden in same location as last census? YeS YeS Yes N/A

• Change from last census, see attached table of 1999-2001 Land Use Census Changes 27

Table 2~1 2001 Land Use Census Results Parameter Sector N

• Sector P

• Sector Q Sector R

• I. Nearest Occupied a. Distance (mile) None None None 1.11 Redden ce b. Name C. Hayes

c. Address I 1008 Grand Gulf Rd

d. Degrees from true north Port Gibson, MS 346.1 II. Nearest Unoccupied a. Distance (mile) 1.61 4.83 3.5 None Residence (closer than Bucksnort Camp Dr. Cobb Yucatan Camp (Info Only) (Info Only) occupied residence)

III. Nearest Milk Animal a. Distance None None None None

b. Owners Name IV. Nearest Broadleaf a. Distance (mile) None None None None Garden b. Owners Name

c. Address

d. Garden size (ft2)

e. Degrees from true north V. Census Comparison a. Is nearest occupied residence in same location as last census? N/A N/A N/A YeS

b. Is nearest milk animal in same location as last census? N/A N/A N/A N/A

c. Is nearest broadleaf garden in same location as last census? N/A N/A N/A No

• Change from last census, see attached table of 1999-2001 Land Use Census Changes 28

Table 2-1 1999-2001 Land Use Census Changes SECTOR PARAMETER 1999 Data 2001 Data Reason for Change A Nearest Occupied Residence R. Braden R. Brent New nearest resident B Residence Distance 1.2 0.83 More accurate distance c Residence Distance 0.7 0.67 More accurate distance D Nearest Occupied Residence E. Dotson E. Johnson More accurate reading/sector lines D Nearest Garden Jackson Moore New nearest garden E Nearest Occupied Residence L. Johnson V. Ward New nearest resident, Ward moved trailer E Garden Distance 0.9 0.89 More accurate distance E Unoccupied Residence None J. Trimble,0.83 mile J. Trimble moved F Residence Distance 2.3 2.25 More accurate distance Nearest Garden Several at 4.9 miles J. Smith New nearest garden

Name Change D. Buckner R. Crib New owner G Garden Distance 4.0 3.88 More accurate distance G Unoccupied residence 2.0 1.93 More accurate distance distance H Residence distance 1.1 1.11 More accurate distance H Unoccupied residence None Dowel1 D. Dowel1 uses occasionally for family members H Nearest Garden None 1115 Shafer New nearest garden J Residence Name and unknown, 2.9 Humphries, 3.16 Obtained name and more accurate distance Distance K Residence Distance 2.2 2.23 More accurate distance K Garden Owner Name Sr. Jr. Cassell Jr. has garden L Residence Distance 0.8 0.89 More accurate distance N Unoccupied Distance 1.6 1.61 More accurate distance P Unoccupied Distance 4.3 4.83 More accurate distance I R I Residence Name and t Roddey, 1.1 I Hayes, 1.11 I Occupant is C. Hayes, more accurate distance t Distance All Degrees from True North Not included Included Used GPS for land use census All Address Route Address New 9 11 Address New 9 11 Address imnlemented 29

2.9 Interlaboratory Comparison Results River Bend Station (RBS) Environmental Laboratory analyzed interlaboratory comparison samples for GGNS to fi&ll the requirements of the ODCM Specifications 612.1. Attachment 1, 200 1 Radiological Environmental Monitoring Report, contains these results in Table 9.1. GGNS review of RBS interlaboratory comparison indicated that 98.1% of the sample results for accuracy and 100% of the results for precision were within the acceptable control limits of the three normalized deviations. For those sample results outside the acceptable control limits, GGNS and RBSs review indicated no impact on previously reported data. Attachment 1 also provides additional discussion regarding sample results outside the acceptable control limits.

30

Figure 2-2 1996-2001 Gamma Radionuclide Results pCi/kg Barge Slip Sediment 75, B 1996-2000 Operational Average 0 2001 Operational Average I 50 25 0

Mn-54 Co-60 31

3.0 Radiological Environmental Monitoring Program Summary 3.1 2001 Program Results Summary Table 3.1 summarizes the 2001 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.

32

TABLE 3.1 Radiological Environmental Monitoring Program Summarv Name of Facility: Grand Gulf Nuclear Station Docket No: 50-416 Location of Facility: Claiborne County, Mississirmi Reporting Period: Januarv - December 2001 Sample Type Type & Number LLD b Indicator Locations Location with Highest Annual Mean Control Locations Number of

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

[ Range1 1Range1 Results e Mean(F)C Location d [ Range ]

Air Particulates GB 153 0.01 0.022 ( 102 / 102 ) AS-7 UH 0.022(51/51) 0.021 (51/ 51) 0 (pCi/m3 ) [ 0.010 - 0.059 ] ( Sector H, 0.5 mi. ) [ 0.010 - 0.059 ] [ 0.009 - 0.050 ]

GS 12 cs-134 0.05 <LLD N/A N/A <LLD 0 cs-137 0.06 <LLD N/A N/A <LLD 0 Airborne Iodine I-131 153 0.07 <LLD N/A N/A <LLD 0

( pCi/m3 )

Inner Ring TLDs Gamma 36 0-l 9.9 ( 36 I36 ) M-2 1 11.9(4/4) N/A 0 t mwQtr ) [ 6.8 - 12.5 ] ( Sector J, 0.4 mi. ) [ 11.3 - 12.5 ]

Outer Ring TLDs Gamma 28 tf) 10.6(28/28) M-49 11.6(4/4) N/A 0 t mwQtr 1 [ 8.6 - 12.3 ] ( Sector H, 4.5 mi. ) [ 11.2 - 12.2 ]

Special Interest TLDs Gamma 28 CO 9.4 ( 28 / 28 ) M-01 11.0(4/4) N/A 0 t mwQtr 1 [ 7.4- II.61 ( Sector E, 3.5 mi. ) [ 10.1 - 11.6 ]

Control TLDs Gamma 4 03 N/A N/A N/A 10.9(4/4) 0 t mwQtr 1 [ lO.O- 11.31 Protected Area TLDs Gamma 64 0-l 37.3 ( 64 I 64 ) M-69 106.1(4/4) N/A 0 t mwQtr ) [ 8.2 - 126.0 ] ( Sector G, Onsite ) [ 80.7 - 126.0 ]

33

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 2001 Sample Type Type dz Number LLD b Indicator Location Location with Highest Annual Mean Control Locations Number of

( Units ) of Analyses a Mean(F)! Mean(F)C Nonroutine I Range I 1Range I Results e Mean ( F ) c Location d [ Range ]

Surface Water H-3 11 3000 < LLD N/A N/A <LLD 0

( pCi/l )

GS 11 1-131 15 <LLD N/A N/A <LLD 0 Mn-54 15 <LLD N/A N/A <LLD 0 Fe-59 30 <LLD N/A N/A <LLD 0 Co-58 15 <LLD N/A N/A <LLD 0 Co-60 15 <LLD N/A N/A <LLD 0 Zn-65 30 <LLD N/A N/A <LLD 0 Zr-9.5 30 <LLD N/A N/A <LLD 0 Nb-95 15 <LLD N/A N/A <LLD 0 cs-134 15 <LLD N/A N/A <LLD 0 cs-137 18 <LLD N/A N/A <LLD 0 Ba-140 60 <LLD N/A N/A <LLD 0 La-140 15 <LLD N/A N/A <LLD 0 34

TABLE 3.1 Radiological Environmental Monitoriw Program Summary Name of Facility: Grand Gulf Nuclear Station Docket No: 50-416 Location of Facility: Claiborne County, Mississippi Reporting Period: January - December 2001 Sample Type Type & Number LLD b Indicator Locations Location with Highest Annual Mean Control Locations Number of

( Units ) of Analyses a Mean(F)C Mean(F)C Nonroutine I Range1 1RangeI Results e Mean(F)C Location d [ Range 1 Groundvvater H-3 3 2000 <LLD N/A N/A <LLD 0

( PChI )

I-131 2 1 <LLD N/A N/A <LLD 0 GS 3 Mn-54 15 <LLD N/A N/A <LLD 0 Fe-59 30 <LLD N/A N/A <LLD 0 Co-58 15 <LLD N/A N/A <LLD 0 Co-60 15 <LLD N/A N/A <LLD 0 Zn-65 30 <LLD N/A N/A <LLD 0 Zr-95 30 <LLD N/A N/A <LLD 0 Nb-95 15 <LLD N/A N/A <LLD 0 cs-134 15 <LLD N/A N/A <LLD 0 cs-137 18 <LLD N/A N/A <LLD 0 Ba-140 60 <LLD N/A N/A <LLD 0 La-140 15 <LLD N/A N/A <LLD 0 Bottom Sediment GS 2

( PC% 1 cs-134 150 <LLD N/A N/A <LLD 0 cs-137 180 <LLD N/A N/A <LLD 0 35

TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Grand Gulf Nuclear Station Docket No: 50-416 Location of Facility: Claiborne Countv, Mississippi Reporting Period: January - December 2001 Sample Type Type & Number LLD b Indicator Location Location with Highest Annual Mean Control Locations Number of

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

[ Range I 1Range 1 Results e Mean(F)C Location d [ Range ]

Fish GS 3 t pC$kg 1 Mn-54 130 <LLD N/A N/A <LLD 0 Fe-59 260 <LLD N/A N/A <LLD 0 Co-58 130 <LLD N/A N/A <LLD 0 Co-60 130 <LLD N/A N/A <LLD 0 Zn-65 260 <LLD N/A N/A <LLD 0 cs-134 130 <LLD N/A N/A <LLD 0 a-137 150 <LLD N/A N/A <LLD 0 Food Products I-131 8 60 <LLD N/A N/A <LLD 0 t pC@z 1 GS 8 cs-134 60 <LLD N/A N/A <LLD 0 cs-137 80 <LLD N/A N/A <LLD 0 Sediment (Special) GS 2 t WW 1 Mn-54 (0 39.07(2/2) SEDBAR 39.07(2/2) N/A 0

[ 37.20 - 40.94 ] (Sector Q, 1.5 [ 37.20 - 40.94 ]

mi.)

Co-60 (0 51.34(2/2) SEDBAR 51.34(2/2) N/A 0

[ 42.07 - 60.60 ] (Sector Q, 1.5 [ 42.07 - 60.60 ]

mi.)

cs-134 150 <LLD N/A N/A N/A 0 cs-137 180 28.77 ( 2 / 2 ) SEDBAR 28.77(2/2) N/A 0

[ 23.24 - 34.30 ] (Sector Q, 1.5 [ 23.24 - 34.30 ]

mi.)

36

TABLE 3.1 Radiological Environmental Monitoring Program Summare Name of Facility: Grand Gulf Nuclear Station Docket No: 50-416 Location of Facility: Claiborne Countv, Mississippi Reporting Period: January - December 2001 Sample Type Type & Number LLD b Indicator Location Location with Highest Annual Mean Control Locations Number of

( Units ) of Analyses a Mean(F)C Mean ( F ) c Nonroutine i Range 1 I Range I Results e Mean(F)C Location d f Range1 Venison (Special) GS 1

( PCW 1 Mn-54 130 <LLD N/A N/A N/A 0 Fe-59 260 <LLD N/A N/A N/A 0 Co-58 130 <LLD N/A N/A N/A 0 Co-60 130 <LLD N/A N/A N/A 0 Zn-65 260 <LLD N/A N/A N/A 0 cs-134 130 <LLD N/A N/A N/A 0 cs-137 150 <LLD N/A N/A N/A 0 a GB = Gross beta; I-131 = Iodine-131; H-3 = Tritium; GS = Gamma scan.

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

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

d Locations are specified (1) by name and (2) degrees relative to reactor site.

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

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

37

Attachment 1 2001 Radiological Monitoring Report Summary of Monitoring Results 38

Table 1.1 SampleType: Air Particulate Filter and Radioiodine Cartridge Analysis: GrossBeta and I- 131 Units: pCi/m3 AIR SAMPLE AS-l PG - GGNS Nearest Community LLD (pCilm3) 0.07 0.01 LAB ID START DATE END DATE I-131 GROSS BETA 20010019 l/2/2001 119/2001 < 0.017 0.035 +I-0.003 20010044 l/9/2001 l/16/2001 < 0.021 0.020 +I-0.002 20010065 l/16/2001 1/23/2001 < 0.017 0.029 +/-0.002 20010072 l/23/2001 1/30/2001 < 0.013 0.036 t-l-O.003 20010100 l/30/2001 2161200 1 < 0.018 0.026 t-l-O.002 20010107 21612001 2113/2001 < 0.012 0.021 +I-0.002 20010127 2/13/2001 2/20/200 1 < 0.017 0.021 +I-0.002 20010131 2/2012001 212712001 < 0.016 0.022 +I-0.002 20010157 2/27/2001 3161200 1 < 0.016 0.015 +/-0.002 20010174 3/6/2001 3/13/2001 < 0.013 0.019 +I-0.002 20010196 3/13/2001 31201200 1 < 0.019 0.012 +I-0.002 20010211 3/2012001 3/27/2001 < 0.017 0.019 +/-0.002 20010243 3/27/2001 4131200 1 < 0.013 0.019 +/-0.002 20010261 4131200 1 4/10/2001 < 0.014 0.021 +I-0.002 20010312 4/10/2001 4/17/2001 < 0.015 0.017 +I-0.002 40

Table 1.1 Sample Type: Air Particulate Filter and Radioiodine Cartridge Analysis: Gross Beta and I-l 3 1 Units: pCi/m3 AIR SAMPLE AS-l PG - GGNS Nearest Community LLD (pCilm3) 0.07 0.01 LAB ID START DATE END DATE I-131 GROSS BETA 20010333 4/17/2001 4/24/2001 < 0.013 0.020 +I-0.002 20010360 4/24/200 1 5/l/2001 < 0.013 0.025 +I-0.002 20010374 5/l/2001 5/S/2001 < 0.016 0.025 +/-0.002 20010415 5/8/200 1 5/15/2001 < 0.016 0.019 +/-0.002 20010428 5/15/2001 5/22/2001 < 0.009 0.023 H-O.002 20010445 5122f2001 512912001 < 0.013 0.017 +/-0.002 20010457 5/29/2001 6/5/2001 < 0.014 0.015 +I-0.002 20010487 6/5/2001 6/12/2001 < 0.017 0.011 +/-0.002 20010519 6/12/2001 6/19/2001 < 0.015 0.018 +/-0.002 20010537 6/19/2001 6/26/2001 < 0.013 0.023 H-O.002 20010557 6/26/2001 7/3l2001 < 0.019 0.016 +/-0.002 20010582 7/312001 7/10/2001 < 0.014 0.012 +/-0.002 20010601 7/10/2001 7/17/2001 < 0.016 0.019 +/-0.002 20010624 7/1712001 7/23/200 1 < 0.016 0.025 +I-0.002 20010633 7/23/2001 7/31/2001 < 0.016 0.015 -I-/-0.002 41

Table 1.1 SampleType: Air Particulate Filter and Radioiodine Cartridge Analysis: GrossBeta and I- 131 Units: pCi/m3 AIR SAMPLE AS-1 PG - GGNS Nearest Community LLD (pCilm3) 0.07 0.01 LAB ID START DATE END DATE I-131 GROSS BETA 20010655 7/31/2001 8/7/2001 co.013 0.019 +/-0.002 20010674 8/7/2001 8/14/2001 < 0.017 0.012 +/-0.002 20010693 8/14/2001 8/21/2001 < 0.017 0.022 +/-0.002 20010697 X/21/2001 8/28/2001 < 0.016 0.024 +I-0.002 20010718 8/2X/2001 9/4/2001 < 0.015 0.011 +/-0.002 20010736 9/4/2001 9/11/2001 < 0.015 0.011 +/-0.002 20010765 9/11/2001 9/18/2001 < 0.016 0.032 +I-0.002 20010788 9/18/2001 9/25/2001 < 0.016 0.035 +/-0.003 20010806 9/25/2001 10/2/2001 < 0.016 0.024 +/-0.002 20010846 10/2/2001 10/9/2001 < 0.018 0.027 +/-0.002 20010894 10/9/2001 10/16/2001 < 0.018 0.022 +/-0.002 20010902 10/16/2001 10/23/2001 < 0.016 0.024 +I-0.002 20010933 10/23/2001 10/30/2001 < 0.017 0.018 +/-0.002 20010941 10/30/2001 11/6/2001 < 0.016 0.023 +I-0.002 20010963 11/6/2001 11/13/2001 < 0.017 0.057 +/-0.003 42

Table 1.1 Sample Type: Air Particulate Filter and Radioiodine Cartridge Analysis: Gross Beta and I- 13 1 Units: pCi/m3 AIR SAMPLE AS-1 PG - GGNS Nearest Community LLD (pWm3) 0.07 0.01 LABID START DATE END DATE I-131 GROSS BETA 20010975 1l/13/2001 1l/20/2001 < 0.022 0.043 +i-0.003 20010994 1l/20/2001 1l/27/200 1 < 0.010 0.019 +/-0.002 20011016 1l/27/2001 12/4/200 1 < 0.017 0.0 18 +/-0.002 20011052 12/4/200 1 12/l l/2001 < 0.018 0.03 1 +/-0.002 20011073 12/l l/2001 12/18/2001 < 0.015 0.016 +I-0.002 20011089 12/18/2001 1212612001 < 0.012 0.027 +I-0.002 Average: 0.022 Maximum 0.057 Minimum: 0.011 43

Table 1.1 SampleType: Air Particulate Filter and Radioiodine Cartridge Analysis: GrossBeta and I-l 31 Units: pCi/m3 AIR SAMPLE AS-361VA - GGNS - Control LLD (pCYm3) 0.07 0.01 LABID START DATE END DATE I-131 GROSS BETA 20010020 l/2/2001 l/9/200 1 < 0.017 0.032 t-/-O.002 20010045 l/9/2001 l/16/2001 < 0.026 0.019 +/-0.002 20010066 l/16/2001 l/23/2001 < 0.019 0.027 +/-0.002 20010073 l/23/2001 l/30/2001 < 0.014 0.032 -t/-O.002 20010101 l/30/2001 21612001 < 0.018 0.021 +/-0.002 20010108 2/6/200 1 2/13/2001 < 0.013 0.019 +/-0.002 20010128 2/13/2001 2120/2001 < 0.014 0.019 +/-0.002 20010132 2/20/2001 2/27/200 1 < 0.013 0.023 +I-0.002 20010158 2/27/2001 3/6/200 1 < 0.019 0.019 +/-0.002 20010175 3/6/200 1 3/13/2001 < 0.015 0.019 +/-0.002 20010197 3/13/2001 312012001 < 0.017 0.013 +/-0.002 20010212 3/20/200 I 3/27/200 1 < 0.018 0.016 +/-0.002 20010244 3/27/2001 4/3/200 1 < 0.017 0.020 +/-0.002 20010262 4/3/200 1 4/10/2001 < 0.018 0.021 +/-0.002 20010313 4/10/2001 4/17/2001 < 0.018 0.017 +/-0.002 20010334 4/17/2001 412412001 < 0.014 0.021 +I-0.002 44

Table 1.1 Sample Type: Air Particulate Filter and Radioiodine Cartridge Analysis: Gross Beta and I-13 1 Units: pCi/m3 AIR SAMPLE AS-361VA - GGNS - Control LLD (pCilm3) 0.07 0.01 LAB ID START DATE END DATE I-131 GROSS BETA 20010361 4/24/200 1 5/1/2001 < 0.014 0.020 +I-0.002 20010375 5/l/2001 5/8/2001 < 0.014 0.022 +/-0.002 20010416 5/8/2001 5/15/2001 < 0.014 0.017 +/-0.002 20010429 5/15/2001 5/22/2001 < 0.018 0.022 +/-0.002 200 10446 5/22/2001 5/29/2001 < 0.017 0.014 +/-0.002 20010458 5/29/2001 6/5/200 1 < 0.015 0.014 +/-0.002 20010488 6151200 1 6/12/2001 < 0.017 0.009 +/-0.002 20010520 6/12/2001 6/19/2001 < 0.014 0.017 +/-0.002 20010538 6/19/2001 61261200 1 < 0.017 0.018 +/-0.002 20010558 61261200 1 7/3/2001 < 0.016 0.015 +I-0.002 20010583 7/3/200 1 7/10/2001 < 0.017 0.011 +I-0.002 20010602 7/10/2001 7/17/2001 < 0.017 0.017 +I-0.002 20010625 7/17/2001 7/23/200 1 < 0.016 0.021 +I-0.002 20010634 7/23/2001 7/31/2001 < 0.016 0.014 +I-0.002 20010656 7/31/2001 8/7/200 1 < 0.015 0.017 +I-0.002 20010675 8/7/200 1 8/14/2001 < 0.017 0.013 +I-0.002 45

Table 1.1 SampleType: Air Particulate Filter and Radioiodine Cartridge Analysis: GrossBeta and I-l 31 Units: pCi/m3 AIR SAMPLE AS-361VA - GGNS - Control LLD (pWm3) 0.07 0.01 LABID START DATE END DATE I-131 GROSS BETA 20010694 8/14/2001 8/21/2001 < 0.015 0.025 +/-0.002 20010698 8/21/2001 g/28/2001 < 0.017 0.027 +I-0.002 20010719 8/28/200 1 9/4/200 1 < 0.016 0.010 +/-0.002 20010737 9/4/200 1 9/l l/2001 < 0.019 0.010 +/-0.002 20010766 9/l l/2001 911812001 < 0.013 0.030 +/-0.002 20010789 9/18/2001 9/25/2001 < 0.013 0.036 -t/-O.003 20010807 91251200I 10/2/2001 < 0.016 0.024 +I-0.002 20010847 10/2/200 1 1O/9/2001 < 0.015 0.022 +/-0.002 20010895 1O/9/2001 10/16/2001 < 0.017 0.02 1 +/-0.002 20010903 10/16/2001 10/23/2001 < 0.015 0.019 +/-0.002 20010934 1O/23/2001 10/30/2001 < 0.019 0.014 +I-0.002 20010942 1O/30/2001 1l/6/200 1 < 0.015 0.02 1 +/-0.002 20010964 1l/6/2001 1l/13/2001 < 0.021 0.050 +/-0.003 20010976 1l/13/2001 1l/20/2001 < 0.027 0.038 +/-0.003 20010995 11/20/2001 1l/27/2001 < 0.019 0.018 +/-0.002 20011017 12/27/2001 12/4/200 1 < 0.019 0.017 +I-0.002 20011053 12/4/2001 12/l l/2001 < 0.029 0.03 1 +/-0.002 46

Table 1.1 Sample Type: Air Particulate Filter and Radioiodine Cartridge Analysis: Cross Beta and I- 13 1 Units: pCi/m3 AIR SAMPLE AS GGNS - Indicator LLD (pCilm3) 0.07 0.01 LABID START DATE END DATE I-131 GROSS BETA 20010021 l/2/2001 l/9/2001 -=c0.016 0.031 +/-0.002 20010046 l/9/2001 l/16/2001 < 0.016 0.020 +/-0.002 20010067 l/16/2001 l/23/2001 < 0.014 0.028 H-O.002 20010074 l/23/200 1 l/30/2001 < 0.014 0.034 +/-0.003 20010102 l/30/2001 2/612001 < 0.019 0.026 +I-0.002 20010109 2/6/2001 2/13/2001 < 0.016 0.020 +/-0.002 20010129 2/13/2001 2/20/2001 < 0.015 0.020 +/-0.002 20010133 2/20/2001 2/27/2001 < 0.015 0.025 +I-0.002 20010159 2/27/2001 3/612001 < 0.014 0.017 +/-0.002 20010176 3/6/2001 3/13/2001 < 0.014 0.018 +I-0.002 20010198 3/13/2001 3l2Ol2001 < 0.016 0.011 +/-0.002 20010213 3/20/2001 3/27/2001 < 0.013 0.020 +I-0.002 20010245 3/27/2001 4131200 1 -=c0.014 0.018 +/-0.002 20010263 4/3/2001 4/10/2001 < 0.017 0.021 +/-0.002 20010314 4/10/2001 4/17/2001 < 0.014 0.016 +I-0.002 20010335 4/17/2001 4/24/2001 -=c0.018 , 0.019 +/-0.002 48

Table 1.1 Sample Type: Air Particulate Filter and Radioiodine Cartridge Analysis: Gross Beta and I-13 1 Units: pCi/m3 AIR SAMPLE AS GGNS - Indicator LLD (pCilm3) 0.07 0.01 LABID START DATE END DATE I-131 GROSS BETA 20010362 4/24/2001 5/l/2001 < 0.013 0.022 +/-0.002 20010376 5/l/2001 5/8/2001 < 0.013 0.023 +/-0.002 20010417 5/8/200 1 5/15/2001 < 0.019 0.016 +I-0.002 20010430 Y1512001 5/22/2001 < 0.015 0.024 +I-0.002 20010447 5/22/200 1 5/29/2001 < 0.014 0.014 +I-0.002 20010459 51291200 1 6/5/2001 < 0.019 0.013 +/-0.002 20010489 6/5/2001 6/12/2001 < 0.020 0.010 +/-0.002 20010521 6/12/2001 6/19/2001 < 0.016 0.019 -t/-o.002 20010539 6/19/2001 6/26/2001 -=c0.016 0.020 +/-0.002 20010559 6/26/200 1 7/3/2001 < 0.021 0.016 +I-0.002 20010584 7/3/2001 7/10/2001 < 0.020 0.010 +/-0.002 20010603 7/10/2001 7/17/2001 < 0.017 0.019 +I-0.002 20010626 7/17/2001 7/23/2001 < 0.020 0.024 +/-0.002 20010635 7/23/2001 7/3112001 < 0.016 0.015 +I-0.002 20010657 7/31/2001 8/7/2001 < 0.016 0.019 +/-0.002 20010676 8/7/2001 8/14/2001 < 0.016 0.011 +/-0.002 49

Table 1.1 SampleType: Air Particulate Filter and Radioiodine Cartridge Analysis: GrossBeta and I-l 31 Units: pCi/m3 AIR SAMPLE AS GGNS - Indicator LLD (pCilm3) 0.07 0.01 LAB ID START DATE END DATE I-131 GROSS BETA 20010695 8/14/2001 8/21/2001 < 0.018 0.024 +/-0.002 20010699 8/21/2001 8/28/200 1 < 0.013 0.028 l-0.002 20010720 8/28/200 1 9/4/200 1 < 0.014 0.010 +/-0.002 20010738 9/4/200 1 9/l l/2001 < 0.015 0.011 +/-0.002 20010767 9/l l/2001 9/18/2001 < 0.015 0.027 +/-0.002 20010790 9/18/2001 9/25/2001 -=c0.016 0.035 +/-0.003 20010808 9/25/200 1 10/2/2001 -c 0.016 0.023 +/-0.002 20010848 10/2/200 1 10/9/200 1 < 0.017 0.028 +I-0.002 20010896 1O/9/2001 10/16/2001 < 0.015 0.020 +/-0.002 20010904 10/16/2001 10/23/2001 < 0.015 0.022 -t/-o.002 20010935 10/23/200 1 10/30/2001 < 0.017 0.0 16 +/-0.002 20010943 10/30/2001 1l/6/2001 < 0.016 0.022 H-O.002 20010965 1l/6/2001 1l/13/2001 < 0.018 0.059 +/-0.003 20010977 1l/13/2001 11/20/2001 < 0.026 0.042 +/-0.003 20010996 1l/20/2001 1l/27/2001 < 0.017 0.017 +/-0.002 20011018 1l/27/2001 12/4/2001 < 0.018 0.0 18 +/-0.002 50

Table 1.1 SampleType: Air Particulate Filter and Radioiodine Cartridge Analysis: GrossBeta and I-l 31 Units: pCi/m3 AIR SAMPLE AS GGNS - Indicator LLD (pCi/m*3) 0.07 0.01 LABID START DATE END DATE I-131 GROSS BETA 20011054 12/4/200 1 12/l l/2001 < 0.022 0.033 +/-0.003 20011075 12/l l/2001 12/18/2001 < 0.016 0.0 18 +/-0.002 20011091 12/18/2001 12/26/2001 < 0.014 0.030 +/-0.002 Average: 0.022 Maximum 0.059 Minimum: 0.010 51

Table 1.2 Sample Type: Air Particulate Filter Analysis: Gamma Isotopic Units: pCi/m3 AIR PARTICULATE FILTER QUARTERLY COMPOSITES (GAMMA) - GGNS LLD (pCilm3) 0.05 0.06 LABID LOCATION DATE cs-134 cs-137 20010264 AS-l PG Quarter 1 2/13/2001 < 0.002 < 0.002 20010265 AS-3 61VA Quarter 1 2/13/2001 < 0.002 < 0.002 20010266 AS-7 UH Quarter 1 2/13/2001 < 0.002 < 0.001 20010564 AS-l PG Quarter2 5/11/2001 < 0.002 < 0.002 20010565 AS-3 6 1VA Quarter2 5f 1l/2001 < 0.002 < 0.002 20010566 AS-7 UH Quarter2 5f 1l/2001 < 0.002 < 0.001 20010823 AS-l PG Quarter 3 8/10/2001 < 0.002 < 0.002 20010824 AS-3 61VA Quarter3 8/10/2001 < 0.002 < 0.002 20010825 AS-7 UH Quarter3 8flOf2001 < 0.001 < 0.002 20011117 AS-l PG Quarter4 11/10/2001 < 0.002 < 0.002 20011118 AS-3 61VA Quarter4 11/10/2001 < 0.002 < 0.001 20011119 AS-7 W Quarter4 11/10/2001 < 0.001 < 0.002 52

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

Station 1st Qtr 01 2nd Qtr 01 3rd Qtr 01 4th Qtr 01 Annual Mean 01 M-16 10.8 10.3 9.0 10.7 10.2 M-17 10.0 9.5 9.2 10.4 9.8 M-19 9.4 10.2 9.1 10.6 9.8 M-21

• 11.7 12.1 11.3 12.5 11.9 M-22 8.4 8.8 8.0 9.4 8.6 M-23 8.0 8.3 8.2 8.7 8.3 M-25 6.8 10.0 8.5 9.4 8.7 M-28 10.2 11.0 10.9 11.0 10.8 M-94 11.1 10.3 9.8 11.0 10.6 Outer Ring - Approximately Three (3) to Five (5) Miles from the Site (ODCM Specifications)

Station 1st Qtr 01 2nd Qtr 01 3rd Qtr 01 4th Qtr 01 Annual Mean 01 M-36 8.6 9.3 8.7 9.1 8.9 M-40 10.1 11.3 9.8 10.1 10.3 M-48 10.9 9.6 10.4 10.3 10.3 M-49

• 12.2 11.3 11.2 11.7 11.60 M-50 10.6 10.6 10.3 10.6 10.5 M-55 11.5 10.4 10.7 10.9 10.9 M-57 11.9 11.1 12.3 11.1 11.58

• Location with highest annual mean.

53

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

Station 1st Qtr 01 2nd Qtr 01 3rd Qtr 01 4th Qtr 01 Annual Mean 01 M-01

• 11.4 11.6 10.1 10.9 11.0 M-07 10.7 10.8 10.1 10.8 10.6 M-09 10.3 9.8 8.4 9.6 9.5 M-10 8.5 8.8 7.4 9.3 8.5 M-33 8.2 8.3 7.4 8.6 8.1 M-38 9.3 9.8 9.1 9.0 9.3 M-39 8.8 9.2 8.5 9.3 9.0

• Location with highest annual mean.

Special Interest Areas - Control (ODCM Specifications)

Station 1st Qtr 01 2nd Qtr 01 3rd Qtr 01 4th Qtr 01 Annual Mean 01 M-14 11.1 11.2 10.0 10.9 54

Table 2.3 Sample Type: Thermoluminescent Dosimeters Analysis: Gamma Dose Units: mrem/Qtr Protected Area Boundary Station 1st Qtr 01 2nd Qtr 01 3rd Qtr 01 4th Qtr 01 Annual Mean 01 M-61 65.2 44.1 50.0 59.6 54.7 M-62 89.4 60.6 68.2 83.9 75.5 M-63 19.5 14.4 14.9 16.5 16.3 M-64 21.9 17.5 18.8 21.2 19.8 M-65 18.8 15.0 16.5 19.1 17.3 M-66 22.9 17.1 18.6 21.6 20.1 M-67 23.6 19.5 18.3 22.1 20.9 M-68 98.3 67.6 73.8 88.9 82.2 M-69

• 125.8 80.7 92.0 126.0 106.1 M-70 109.9 73.1 89.0 111.0 95.8 M-71 29.6 18.9 22.3 29.1 25.0 M-72 21.6 16.3 17.0 21.9 19.2 M-74 10.5 8.2 9.4 11.4 9.9 M-76 16.7 12.8 13.5 16.8 14.9 M-77 10.7 8.7 8.9 10.5 9.7 M-81 11.2 9.8 9.1 10.6 10.2

• Location with highest annual mean.

Duplicates (ODCM Specifications)

Station 1st Qtr 01 2nd Qtr 01 3rd Qtr 01 4th Qtr 01 Annual Mean 01 M-31 10.2 9.1 9.8 10.2 9.8 M-32 10.3 9.3 8.7 9.9 9.6 M-60 12.1 9.5 10.6 10.6 10.7 5.5

Table 3.1 SampleType: Surface Water Analysis: GammaIsotopic Units: pCi/l SURFACE WATER SAMPLES (GAMMA) - GGNS LLD @CM) 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 I-131 CS-134 cs-137 BA-140 LA-140 20010052 MR DOWN l/9/2001 < 2.21 < 4.24 < 9.32 < 3.91 < 5.90 < 6.67 < 8.47 < 12.10 <: 5.23 < 5.78 < 27.00 < 8.13 20010053 MR UP l/9/2001 <: 4.01 < 4.71 < 8.12 < 3.66 < 8.11 < 6.32 < 3.47 < 9.94 < 4.35 < 3.86 < 22.40 < 9.35 20010272 MR DOWN 4/10/2001 < 10.40 < 6.10 c: 7.83 < 8.83 < 17.40 < 9.81 < 18.90 c: 12.00 < 10.30 i 8.79 < 35.50 < 13.60 20010274 MR UP 4/10/2001 < 11.80 < 12.50 < 24.10 < 9.35 < 26.50 < 8.66 < 15.10 < 14.10 < 14.10 < 9.86 < 38.00 < 11.80 20010560 MR DOWN 7/3/200 1 < 10.70 i 9.32 < 11.40 < 9.70 < 19.70 < 9.47 < 13.50 < 10.40 < 10.70 <: 9.26 cc 36.10 < 15.00 20010562 MR UP 7/3/200 1 < 10.60 < 11.90 < 20.30 < 9.77 < 23.70 < 10.00 < 20.40 i 11.40 i 11.10 < 10.70 < 53.00 < 14.30 20010809 MR DOWN 10/2/200 1 < 9.69 < 8.43 < 12.40 < 6.72 < 20.50 c 7.74 < 11.10 < 7.47 <: 7.60 -c 7.24 < 26.90 < 7.30 20010810 MR DOWN GG 10/2/2001 < 6.79 i 9.96 < 19.00 < 9.97 < 28.00 < 9.36 < 12.40 < 10.20 < 9.96 < 8.58 -c 24.20 < 11.00 20010813 MR UP 10/2/2001 < 10.30 < 10.30 < 19.00 < 7.55 < 21.00 < 14.90 < 17.30 < 11.80 < 12.20 < 10.80 < 36.60 < 10.10 20011092* MR DOWN 12/27/2001 -=z7.56 < 6.19 < 17.80 < 8.99 < 9.33 c: 9.70 < 13.90 -=c12.40 i 10.10 -c 9.24 < 36.10 < 6.28 200 11094* MR DOWN GG 12/27/2001 < 12.40 < 7.60 < 9.31 < 7.31 < 13.80 < 11.10 c. 16.50 < 9.09 < 9.61 < 10.20 < 32.20 < 13.10

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

56

Table 4.1 Sample Type: Groundwater Analysis: Gamma Isotopic Units: pCi/l GROUND WATER SAMPLES (GAMMA) - GGNS LLD (pCi/l) 15 15 30 15 30 15 30 15 18 60 15 LAB ID LOCATION DATE MN-54 CO-58 FE-59 CO-60 ZN-6.5 NB-95 ZR-95 cs-134 cs-137 BA-140 LA-140 2001081501 PGWELL 10/1/2001 <: 8.10 < 8.45 < 19.60 -c 14.60 < 24.20 < 10.00 <: 21.00 < 14.30 < 10.20 < 39.70 ~14.80 2001081601 PGWELL GG 10/1/2001 < 9.63 < 10.70 -c 12.00 < 7.80 < 29.20 < 9.94 < 14.20 c: 8.85 -c 9.73 < 35.00 17.02 2001082001 CONSTWELL# 3 10/1/2001 < 9.72 < 9.83 < 20.30 < 7.31 < 21.50 < 9.38 < 17.10 < 9.40 < 9.68 < 39.30 <ll.lO GG - indicates duplicate sample.

58

Table 4.2 SampleType: Groundwater Analysis: Tritium Units: pCi/l GROUND WATER SAMPLES ( H-3) - GGNS LLD @CM) 2000 LABID LOCATION DATE TRITIUM 20010818 PGWELL 10/1/2001 < 541.

20010819 PGWELL GG 10/1/2001 < 540.

20010822 CONSTWELL # 3 1o/1/2001 < 540.

GG - indicates duplicate sample.

59

Table 4.3 Sample Type: Groundwater Analysis: Iodine Units: pCi/l GROUND WATER SAMPLES (Iodine-131) - GGNS LLD (pCi/i) 1.0 LADID LOCATION DATE I-131 20010817 PGWELL 10/l/2001 co.90 200 10821 CONSTWELL ##3 10/1/2001 co.90 60

Table 5.1 SampleType: Sediment Analysis: GammaIsotopic Units: pCiikg SEDIMENT SAMPLES - GGNS LLD (pCi/kg) 150 180 LABID LOCATION DATE es-134 cs-137 20010971 SEDHAM 1l/19/2001 < 26.50 < 35.10 200 10972 SEDCONT 1l/19/2001 < 35.40 < 37.60 61

v v v s?

Table 8.1 Sample Type: Saecial Samples Analysis: Gamma Isotopic Units: pCi/kg SPECIAL SEDIMENT SAMPLES - GGNS LLD @Ci/kg) 150 180 N/A N/A LAD ID LOCATION DATE es-134 cs-137 CO-60 MN-54 20010973 BARGE SLIP 1l/19/2001 < 15.30 23.24 +I- 6.1 42.07 +/-9.51 40.94 -f/-5.38 20010974 BARGE SLIP GG 1l/19/2001 < 33.60 34.30 -I-/- 13.6 60.60 +I-18.22 37.20 +/-11.77 GG - indicatesduplicate sample.

SPECIAL VENISON SAMPLES - 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 20020302 ONSITE 10/16/2001 < 12.86 < 40.30 < 259.27 < 8.38 < 31.84 < 7.35 < 7.26 64

Table 9.1 Sample Type: Interlaboratory Comparison Analysis: Gross Beta, Tritium, Iodine- 131 and Gamma Isotopic Sayv@&fpe Study Date II Analysis II Known Value E2818125 9/20/01 1 BETA 1 90.0i17.3 1 93.0 1 0.60 1 0.065

~liHlkG)

Charcoal Cartridge E2673A-125 6114/01 l-131 80.0 i13.9 79.8 -0.04 0.148 (pCi/cartridge)

E2908-125 12/6/01 l-131 91.0f 15.8 90.8 -0.03 0.467 E2576-125 3122101 BETA 168zk43.7 162 -0.44 0.211 E2574-125 mi/22/Ol i CR-51 I 242zk21.0 1 240 1 -0.29 1 0.391 1 MN-54 101 f 8.75 104 1.03 0.234 CO-58 48.Oi 8.66 47.2 -0.28 0.189 FE-59 84.0i8.66 89.5 1.91 0.992 CO-60 147~tl2.7 144 -0.63 0.643 ZN-65 186~32.2 180 -0.59 0.064 l-131 90.0 ~15.6 89.6 -0.08 0.965 cs-134 129rk11.2 132 0.90 0.733 1 CS-137 1 102k8.83 1 101 1 -0.37 1 0.845 1 65

Table 9.1 Sample Type: Interlaboratory Comparison Analysis: Gross Beta, Tritium, Iodine- 131 and Gamma Isotopic Study Date Analysis RBS RBS RES Known Value Value N-DEVb N-RANGE Water E2575125 3122101 CR-51 242~t21.0 251 1.24 2.734 (pcihiter) (Duplicate) MN-54 101 2 8.75 103 0.57 0.234 CO-58 48.0~ 8.66 52.3 1.48 0.295 FE-59 84.0 zt8.66 91.6 2.63 0.697 CO-60 147rt12.7 140 -1.57 0.321 1 ZN-65 1 186k32.2]p187 0.09 0.349 l-131 90.0 rt15.6 93.7 0.72 1.523 cs-134 I 129i11.2 128.7 -0.09 0.733 cs-137 I 102*8.83 1 99.8 1 -0.76 1t 0.220 CE-141 94.Ojz8.66 94.9 0.32 0.591 E2674-125 6/14/01 H-3 7494zt1298 7635 0.33 0.130 E2816-125 9/20/01 CR-51 265zt23.0 269 0.48 1.382 MN-54 149* 12.9 155 1.39 0.000 CO-58 128ill.l 127 -0.27 0.369 FE-59 62.0 k8.66 70.0 2.84 0.473 CO-60 193k16.7 197 0.78 0.551 ZN-65 18431.9 185 0.06 0.032 l-131 60.0 rt10.4 59.0 -0.19 0.276 cs-134 116~10.1 109 -2.09 0.204 cs-137 232zt20.1 233 0.15 0.815 CE-141 88.0 i8.66 91.0 1.17 1.004 66

Table 9.1 Sample Type: Interlaboratory Comparison Analysis: GrossBet;8.rritium. Iodine-131 and GammaIsotot%c Study Date Analysis RBS RBS RBS Known Value Value N-DEVb N-RANGE Water E281i-125 9/20101 CR-51 I

265 f 23.0 I

269 I 0.57 I

0.401 (pCi/liter) (Duplicate) MN-54 1 149 2 12.9 1 155 1 1.47 I 0.159 CO-58 1282 11.1 128 0.09 0.646 FE-59 62.0 f 8.66 71 3.24d 0.366 1 CO-60 I 193i 16.7 1 195 I 0.30 t 0.796 1 ZN-65 1 184k31.9 189 0.44 1 0.225 t-131 I 60.0 I!E10.4 1 59.7 1 -0.09 1 0.226 1 cs-134 I 116i: 10.1 1 III 1 -1.39 1 0.306 1 cs-137 232 -I 20.1 230 -0.35 0.153 CE-141 88.0 f 8.66 94 2.24 0.236 Sediment E2904125 12/6/01 1 CR-51 1 0.631 f 0.055 1 0.613 1 -0.97 1 0.600 1 (pCi/gram) MN-54 0.189 f 0.033 0.207 1.69 0.241 Co-58 0.115 f 0.010 0.117 0.68 0.267 FE-59 1 0.129 f 0.022 1 0.145 1 2.10 1 0.545 CO-60 1 0.449i 0.039 1 0.465 1 1.21 1 0.465 1 ZN-65 1 0.262 f 0.045 1 0.288 1 1.70 1 0.187 1 cs-134 0.252 f 0.022 0.250 -0.29 0.319 cs-137 0.531i 0.046 0.537 0.39 0.707 1 CE-141 1 0.481 kO.042 1 0.498 1.20 1 0.069

-NOTES (a) The known values are listed with a range reflecting control (3 sigma) limits.

(b) The normalized deviation from the known value is computed from the deviation and the standard error of the mean; k2.000 is the warning limit and f3.000 is the control limit. This is a measure of accuracy of the analytical methods.

(c) The normalized range is computed from the mean range, the control limit, and the standard error of the range; +2.000 is the warning limit and +3.000 is the control limit.

This is a measure of precision of the analytical methods.

(d) The results reported were out of the control limits.

67

Table 9.1 Sample Type: Interlaboratory Comparison Analysis: Gross Beta, Tritium, Iodine- 131 and Gamma Isotopic Exceptions:

There was one result outside the control limits for accuracy in the 2001 cross check program participation studies. This result was in a gamma isotopic analysis of water sample.

The study result outside the control limits for accuracy was in the analysis of the nuclide Fe-59 in sample study E2817-125 of 9/20/2001, which is a duplicate sample for that study. The Fe-59 result was within control limits for the other water sample in this quarterly study. RBS normalized-deviation for the analysis was t-3.24 with control limits of h3.00. This high bias result is conservative and is considered as having no impact on past results of the program. The bias high result for Fe-59 is contributed to coincidence summing effects inherent in the calibration. Fe-59 was not detected in any of the REMP samples. Fe-59 results were all within control limits in other cross check samples for the year 2001. The normalized-deviations for Fe-59 in other samples during year 2001 were 1.91,2.63,2.84, and 2.10.

98.1% of interlaboratory cross check results were within control limits for accuracy and 100% of results were within control limits for precision.

68