0CAN050501, Annual Radiological Environmental Operating Report

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Annual Radiological Environmental Operating Report
ML051440530
Person / Time
Site: Arkansas Nuclear  Entergy icon.png
Issue date: 05/16/2005
From: James D
Entergy Operations
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
0CAN050501
Download: ML051440530 (52)
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Text

- hEntergy Entergy Operations, Inc.

1448S.R.333 Russellville, AR 72802 Tel 501 858 5000 OCAN050501 May 16, 2005 U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001

Subject:

Annual Radiological Environmental Operating Report for 2004 Arkansas Nuclear One - Units 1 and 2 Docket Nos. 50-313 and 50-368 License Nos. DPR-51 and NPF-6

Dear Sir or Madam:

Arkansas Nuclear One (ANO), Units 1 and 2, Technical Specifications 5.6.2 and 6.9.4, respectively, require the submittal of an annual radiological environmental operating report for the previous calendar year by May 15 of each year. Attached is the annual radiological environmental operating report for ANO for the year 2004. The radionuclides detected by the radiological environmental monitoring program during 2004 were significantly below regulatory limits; therefore, ANO plant operations during 2004 had no harmful effects nor resulted in any irreversible damage to the environment. This report fulfills the reporting requirements referenced above. Should you have any questions regarding this submittal, please contact Richard Scheide at (479) 858-4618.

This submittal contains no commitments.

rely, ale .James Acti g Director, Nuclear Safety Assurance DEJ/rhs Attachments

-S Dl&'

OCAN050501 Page 2 cc: Dr. Bruce S. Mallett Regional Administrator U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 NRC Senior Resident Inspector Arkansas Nuclear One P.O. Box 310 London, AR 72847 U.S. Nuclear Regulatory Commission Attn: Mr. Thomas Alexion Mail Stop 0-7 D1 Washington, DC 20555-0001 U.S. Nuclear Regulatory Commission Attn: Mr. Drew Holland Mail Stop 0-7 D1 Washington, DC 20555-0001

Attachment to OCAN0505O0 Page 1 of 50 ARKANSAS NUCLEAR ONE - UNITS 1 AND 2 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 2004

Attachment to OCAN050501 Page 2 of 50 TABLE OF CONTENTS

SUMMARY

6

1.0 INTRODUCTION

10 1.1 Radiological Environmental Monitoring Program 10 1.2 Pathways Monitored 10 1.3 Land Use Census 10 2.0 INTERPRETATION AND TRENDS OF RESULTS 20 2.1 Air Particulate and Radioiodine Sample Results 20 2.2 Thermoluminescent Dosimetry Sample Results 20 2.3 Water Sample Results 20 2.4 Sediment Sample Results 22 2.5 Milk Sample Results 22 2.6 Fish Sample Results 22 2.7 Food Product Sample Results 22 2.8 Land Use Census Results 23 2.9 Interlaboratory Comparison Results 23 3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

25 3.1 2004 Program Results Summary 25

Attachment to OCAN050501 Page 3 of 50 LIST OF TABLES TABLE 1.1 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM 12 TABLE 3.1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

26

Attachment to OCAN050501 Page 4 of 50 LIST OF FIGURES FIGURE 1-1 SAMPLE COLLECTION SITES - NEAR FIELD 18 FIGURE 1-2 SAMPLE COLLECTION SITES - FAR FIELD 19 FIGURE 2-1 TLD RADIATION DOSE 24

Attachment to OCAN050501 Page 5 of 50 LIST OF ATTACHMENTS ATTACHMENT I 2004 RADIOLOGICAL MONITORING REPORT

SUMMARY

OF MONITORING RESULTS 33

..D C ATTACHMENT 2 SEDIMENT DOSE CALCULATIONS 49 t

Attachment to OCAN050501 Page 6 of 50 Summary The Annual Radiological Environmental Operating Report presents data obtained through analyses of environmental samples collected for Arkansas Nuclear One's (ANO's)

Radiological Environmental Monitoring Program (REMP) for the period January 1, 2004 through December 31, 2004. This report fulfills the requirements of ANO Unit 1 Technical Specification 5.6.2 and Unit 2 Technical Specification 6.9.4. During 2004, as in previous years, ANO detected radionuclides attributable to plant operations at the discharge location (Station 8). ANO personnel routinely monitor results from this area in order to note any trends. Their review of results from this area indicates the following:

Tritium levels in the surface water media continue to be below regulatory reporting limits.

Cesium-137 levels in the sediment media are not demonstrating any consistent increase in comparison to previous years. Review indicates that 2004 levels are less than that of the historical average (1999-2003).

Gross beta concentrations at the Station 14 (City of Russellville) indicator drinking water location continue to remain at previous operational background measurements and similar to the levels detected at the Station 57 (City of Danville) control drinking water location.

Radiological Environmental Monitoring Pro2ram ANO established the REMP prior to the station becoming operational (1974) to provide data on background radiation and radioactivity normally present in the area. ANO has continued to monitor the environment by sampling air, water, sediment, fish, and food products, as well as measuring radiation directly. ANO also samples milk if milk-producing animals are present commercially within five miles of the plant.

The REMP includes sampling indicator and control locations within an approximately 20-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. ANO personnel compare indicator results with control and preoperational results to assess any impact ANO operation might have had on the surrounding environment.

In 2004, ANO 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 ANO operation and effect on the plant environs. Review of 2004 data, in many cases, revealed undetectable radiation levels in the environment and near background level in significant pathways associated with ANO.

Attachment to  : :

OCAN050S01 Page 7 of 50 Harmful Effects or Irreversible Damage The REMP monitoring did not detect any harmful effects or evidence of irreversible damage in 2004. Therefore, no analysis or planned course of action to alleviate problems was necessary.

Reporting Levels ANO's review indicates that no samples equaled or exceeded reporting levels for radioactivity concentration in environmental samples, as outlined in Units 1 and 2 Offsite Dose Calculation Manual (ODCM) Table 2.6-3, when averaged over any calendar quarter, due to ANO effluents. Therefore, 2004 results did not trigger any Radiological Monitoring Program Special Reports.

Radioactivity Not Attributable to ANO The ANO 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. Prior to 1981, the ANO REMP detected radioactivity resulting from nuclear weapons testing, with Cesium- 137 continuing to be periodically detected in certain pathways.

Comparison to Federal and State Programs ANO 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 Arkansas Department of Health (ADH).

The NRC TLD Network Program was discontinued in 1998. Historically these results have compared to those from the ANO REMP. ANO 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 ADH and the ANO REMP entail similar radiological environmental monitoring program requirements. These programs include collecting air samples and splitting or sharing sample media such as water, sediment and fish. Both programs have obtained similar results over previous years.

Attachment to OCAN050501 Page 8 of 50 Sample Deviations

  • Milk The REMP did not include milk sampling within five miles (8 km) of ANO in 2004 due to unavailability. ANO Units 1 and 2 ODCM require collection of milk samples if available commercially within 8 km (5 miles) of the plant. ANO personnel collected vegetation samples to monitor the ingestion pathway, as specified in the ODCM, because of milk unavailability.
  • Required Lower Limit of Detection (LLD) Values All LLDs during this reporting period were within the acceptable limits required by Table 2.6-2 of the ANO Units 1 and 2 ODCM.
  • Air Samples Listed below are air sampler deviations that occurred during 2004 due to electrical power outages and equipment failure. These deviations did not result in the exceedance of the LLD values specified in the ODCM. As described in footnote (a) to ANO Units 1 and 2 ODCM Table 2.6-1, deviations are permitted from the required sampling schedule due to malfunction of sampling equipment and other legitimate reasons.

Station Sampling Period Comment 1 10/19/04 - 11/02/04 Air sample station power isolated due to construction. Sample resulted in reduced run time.

1 11/02/04 - 11/16/04 Air sample station power isolated due to

. construction. Sample resulted in reduced run time.

6 05/04/04 - 05/18/04 Air sample tubing broke. Sample flow reduced.

  • Missed Samples One fourth quarter TLD (Station 148) was missed during 2004 due to vandalism. This loss was an isolated instance that did not recur during the year and was replaced with a new TLD by ANO personnel once discovered. The recovery rate for TLDs during 2004 was 99% (95 of 96).

One air particulate and radioiodine cartridge sample, which is not required by the ODCM, was missed at Station 1 (indicator) during the sampling period of March 23 - April 6, 2004. This sample was missed due to personnel error and is documented in CR-ANO-C-2004-00600.

Attachment to OCAN050501 Page 9 of 50 Although these were isolated instances that were corrected by ANO personnel once discovered, footnote (a) to ANO Units 1 and 2 ODCM Table 2.6-1 allows deviations from the required sampling schedule due to malfunction of sampling equipment and other legitimate reasons.

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

Program Modifications ANO made no modifications to the REMP during 2004.

Attachments contains results of air, TLD, water, sediment, fish, and food products samples collected in 2004. TLDs were analyzed by Waterford-3 Dosimetry. All remaining samples were analyzed by River Bend Station's (RBS) Environmental Laboratory. Attachment 1 also contains RBS' participation in the interlaboratory comparison program during 2004. contains dose calculations performed for sediment using a generalized equation from Regulatory Guide 1.109, "Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I."

Attachment to OCAN050501 Page 10of50 1.0 Introduction 1.1 Radiological Environmental Monitoring Program ANO established the REMP to ensure that plant operating controls properly function to minimize any associated radiation endangerment to human health or the environment. The REMP is designed for:

  • Analyzing important pathways for anticipated types and quantities of radionuclides released into the environment.
  • Considering the possibility of a buildup of long-lived radionuclides in the environment and identifying physical and biological accumulations that may contribute to human exposures.
  • Considering the potential radiation exposure to plant and animal life in the environment surrounding ANO.
  • 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 are monitored as required by the ANO ODCM. A description of the ANO REMP utilized to monitor the exposure pathways is described in Table 1.1 and shown in Figures 1-1 and 1-2.

Section 2.0 of this report provides a discussion of 2004 sampling results with Section 3.0 providing a summary of results for the monitored exposure pathways.

1.3 Land Use Census ANO personnel conduct a land use census biannually, as required by ANO Units 1 and Unit 2 ODCM Section 2.6.2. The purpose of this census is to identify changes in uses of land within five miles of ANO that would require modifications to the REMP or ODCM. The most important criteria during this census are to determine location in each sector of the nearest:

1) Residence
2) Animal milked for human consumption
3) Garden of greater than 500 square feet producing broadleaf vegetation
  • Attachment to OCANOS0501 Page 11 of 50 The method used by ANO personnel for conducting this land use census is as follows:
  • ANO personnel conduct door-to-door field surveys and/or aerial surveys in each meteorological sector out to five miles in order to locate the nearest resident and milk animal.
  • Consultation with local agricultural authorities is used in instances when personal contact cannot be made.
  • As a result of these surveys, the following information is obtained in each meteorological sector:
1) Nearest permanent residence
2) Nearest milking animal
  • ANO personnel identify locations on the map, measures distances to ANO (or use a GPS system) and records results.
  • Locations, if any, are identified which yield a calculated dose or dose commitments greater than those currently calculated in the ODCM.
  • ANO personnel compare results to previous census.
  • ANO personnel do not perform a garden census since ODCM Section 2.6.2 allows the routine sampling of broadleaf vegetation in the highest D/Q sector near the site boundary in lieu of the garden census.

Attachment to OCAN050501 Page 12 of 50 Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Airborne Radioiodine and Particulates 2 samples close to the Site Boundary in Station 2 (243 - 0.5 miles) - South of the Continuous operation of Radioiodine Canister - Analyze at (or near) different sectors with the sewage treatment plant. sampler with sample least once per 14 days for 1-131.

highest calculated annual average Station 56 (264 - 0.4 miles) - West end of the collection as required by groundlevel D/Q. sewage treatment plant. dust loading but at least Particulate Sampler - Analyze for once per 14 days. gross beta radioactivity following filter change.

Radiolodine and Particulates 1 sample from the vicinity of a Station 6 (111° - 6.8 miles) - Entergy local community having the highest calculated office in Russellville (305 South Knoxville annual average groundlevel DIQ.venue).

Radiolodine and Particulates 1 sample from a control location 15-30 Station 7 (210" -.19.0 miles) - Entergy Supply km (10 - 20 miles) distance. Yard on Highway 10 in Danville.

Radlolodine and Particulates One location sampled voluntarily by Station 1 (88e - 0.5 miles) - Near the ANO. meteorology tower.

Direct TLDs Radiation 16 inner ring stations with two or more Station 1 (88" - 0.5 miles) - On a pole near the Once per 92 days. Gamma Dose - Once per 92 dosimeters in each meteorological meteorology tower. days.

sector in the general area of the Site Station 2 (2430 - 0.5 miles) - South of the Boundary sewage treatment plant.

Station 3 (50 - 0.7 miles) - West of ANO Gate

  1. 2 on Highway 333 (approximately 0.35 miles)

Attachment to OCAN050501 Page 13 of 50 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 16 inner ring stations with two or more Station 4 (181° - 0.5 miles) - West of May Once per 92 days. Gamma Dose - Once per 92 dosimeters in each meteorological Cemetery entrance on south side of the road. days.

sector in the general area of the Site Station 56 (264° - 0.4 miles) - West end of the Boundary sewage treatment plant.

Station 108 (306° - 0.9 miles) - South on Flatwood Road on a utility pole.

Station 109 (291° - 0.6 miles) - Utility pole across from the junction of Flatwood Road and Round Mountain Road.

Station 110 (138° - 0.8 miles) - Bunker Hill Lane on the first utility pole on the left.

Station 145 (28° - 0.6 miles) - Near west entrance to the RERTC on a utility pole.

Station 146 (45° - 0.6 miles) - South end of east parking lot at RERTC on a utility pole.

Station 147 (61° - 0.6 miles) - West side of Bunker Hill Road, approximately 100 yards from intersection with State Highway 333.

Station 148 (122° - 0.5 miles) - Intersection of Bunker Hill Road with Scott Lane on county road sign post.

Attachment to OCAN050501 Page 14 of 50 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 16 inner ring stations with two or more Station 149 (156 -0.5 miles) - On a utility pole Once per 92 days. Gamma Dose - Once per 92 dosimeters in each meteorological on the south side of May Road. days.

sector in the general area of the Site Station 150 (2050 - 0.6 miles) - North side of Boundary May Road on a utility pole past the McCuriey Place turn.

Station 151 (2250 - 0.4 miles) - West side of sewage treatment plant near the lake on a metal post.

Station 152 (340° - 0.8 miles) - North side of State Highway 333 on a London City limit sign post.

TLDs 8 stations with two or more dosimeters Station 6 (1110 - 6.8 miles) - Entergy local In special interest areas such as office in Russellville (305 South Knoxville population centers, nearby residences, Avenue).

schools, and in 1 - 2 areas to serve as Station 7 (210" - 19.0 miles) - Entergy Supply control locations. Yard on Highway 10 in Danville.

Station 111 (120' - 2.0 miles) - Marina Road on a utility pole on the left just prior to curve.

Station 116 (3180 - 1.8 miles) - Highway 333 and Highway 64 in London on a utility pole north of the railroad tracks.

Attachment to OCAN050501 Page 15 of 50 Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs Radiation 8 stations with two or more dosimeters Station 125 (46 - 8.7 miles) - College Street on Once per 92 days. Gamma Dose - Once per 92 in special interest areas such as a utility pole at the southeast comer of the red days.

population centers, nearby residences, brick school building.

schools, and in 1 - 2 areas to serve as Station 127 (100 - 5.2 miles) - Arkansas Tech control locations. Campus on a utility pole across from Paine Hall.

Station 137 (151- - 8.2 miles) - On a speed limit sign on the right in front of the Morris R.

Moore Arkansas National Guard Armory.

Station 153 (304' - 9.2 miles) - Knoxville Elementary School near the school entrance gate on a utility pole.

Waterbome Surface Water 1 indicator location (influenced by Station 8 (166° - 0.2 miles) - Plant discharge Once per 92 days. Gamma isotopic and tritium plant discharge) canal. analyses once per 92 days.

1 control location (uninfluenced by Station 10 (951 - 0.5 miles) - Plant intake canal.

plant discharge)

Drinking Water 1 indicator location (influenced by Station 14 (70° - 5.1 miles) - Russellville city Once per 92 days. 1-131, gross beta, gamma plant discharge) water system from the Illinois Bayou. isotopic and tritium analyses I control location (uninfluenced by Station 57 (208- - 19.5 miles) - Danville public once per 92 days.

plant discharge) water supply treatment on Fifth Street.

Attachment to OCAN050501 Page 16 of 50 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 Waterbome Sediment 1 indicator location (influenced by Station 8 (243" - 0.9 miles) - Plant discharge Once per 365 days. Gamma isotopic analysis once plant discharge) canal. per 365 days.

1 control location (uninfluenced by Station 16 (287' - 5.5 miles) - Panther Bay on plant discharge) south side of Arkansas River across from mouth of Piney Creek.

Ingestion Milk0 1 indicator sample location within 8 km Currently, no available milking animals within 8 Once per 92 days. Gamma isotopic and 1-131 distant if commercially available. km of ANO. analyses once per 92 days.

1 control sample location at a distant of >8 km, when an indicator exists.

Fish 1 sample of commercially and/or Station 8 (2120 - 0.5 miles) - Plant discharge Once per 365 days. Gamma isotopic on edible recreationally important species in canal. portions once per 365 days.

vicinity of plant discharge.

I sample of same species in area not Station 16 (287° - 5.5 miles) - Panther Bay on influenced by plant discharge. south side of Arkansas River across from mouth of Piney Creek.

Attachment to OCAN050501 Page 17 of 50 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 Food Products I sample of broadleaf (edible or non- Station 13 (273°- 0.5 miles) - West from ANO Three per 365 days. Gamma isotopic and 1-131 edible) near the Site Boundary from toward Gate 4 onto Flatwood Road. analyses three times per 365 one of the highest anticipated annual average groundlevel DIQ sectors, if days.

milk sampling is not performed.

1 sample location of broadleaf Station 55 (208" - 16.5 miles) - Intersection of vegetation (edible or non-edible) from Highway 27 and 154.

a control location 15 - 30 km distant, if milk sampling is not performed.

Attachment to OCAN050501 Page 18 of 50 FIGURE 1-1 SAMPLE COLLECTION SITES - NEAR FIELD

,~~~t , ev.. Ln.X -

Lke D ardanll ' - kiwi Nci,,cler One, REMP Samnple Local

Attachment to OCAN050501 Page 19 of 50 FIGURE 1-2 SAMPLE COLLECTION SITES - FAR FIELD 1UNVUEINSEJ 4.

Arkansas Nuclear One REMP Sample Locations (Far Field)

Attachment to OCAN050501 Page 20 of 50 2.0 Interpretation and Trends of Results 2.1 Air Particulate and Radioiodine Sample Results Iodine-131 was not detected in the radioiodine cartridges during 2004, as has been the case in previous years. Indicator gross beta air particulate results for 2004 were within the range of background levels obtained in previous years of the operational REMP and well below preoperational levels as seen below. Results are reported as annual average pCi/m3 .

Monitoring Period Result 1999 -2003 (Minimum Value) 0.020 2004 Value 0.026 1999 - 2003 (Maximum Value) 0.030 Preoperational 0.050 Table 3.1, which includes gross beta concentrations, provides a comparison of the indicator and control means, and further emphasizes that the airborne pathway continues to remain at background levels.

2.2 Thermoluminescent Dosimetry Sample Results ANO 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 was compared to historical control location readings for previous years as shown in Figure 2-1.

ANO's comparison of the results to the control indicates that the ambient radiation levels are unaffected by plant operations. As shown in Figure 2-1, results from the indicator locations were within the upper (+) three standard deviation range of 10.2 mrem/quarter for the control. Therefore, levels continue to remain at or near background.

2.3 Water Sample Results Analytical results for 2004 surface water and drinking water samples were similar to those reported in previous years.

Surface water samples were collected and analyzed for gamma radionuclides and tritium. Gamma radionuclides were below detectable limits which is typically consistent with that of previous operational years. Tritium continues to be detected at

Attachment to OCAN050501 Page 21 of 50 the indicator location. However, the levels detected were within the range that has typically been seen at this location as shown below. Results are reported as annual average pCi/l.

Monitoring Period Concentration 1999 - 2003 (Minimum Value) 272.0 2004 Value 544.3 1999 - 2003 (Maximum Value) 1847.5 Preoperational Value 200.0 ANO personnel have noted no definable trends associated with the tritium levels at the discharge location. Levels detected during 2004 and previous operational years have been well below regulatory reporting limits. Therefore, the operation of ANO had no impact on this pathway during 2004 and levels of radionuclides remain similar to those obtained in operational years.

Drinking water samples were collected from two locations (indicator and control).

Although ANO personnel utilize Station 14 (City of Russellville) as an indicator location due to the potential for the pathway to exist, the City of Russellville has not withdrawn water from Lake Dardanelle in the past several years.

Drinking water samples were analyzed for gross beta radionuclides, Iodine-131, gamma radionuclides and tritium. Gamma radionuclides, Iodine-131 and tritium concentrations were below detectable limits at the indicator and control locations, which is consistent with preoperational and operational years. Gross beta concentrations at the indicator and control locations are similar as shown in Table 3.1.

Listed below is a comparison of 2004 indicator results to preoperational and operational years. Results are reported as annual average pCi/l.

Radionuclide 2004 1999 -2003 Preoperational Gross Beta 2.53 3.60 2.0 Iodine-131 <LLD <LLD <LLD Gammas <LLD <LLD <LLD Tritium <LLD <LLD 200.0 Therefore, the operation of ANO did not have any definable impact on this pathway during 2004 and radionuclides monitored for this pathway continue to remain at background levels.

Attachment to OCAN050501 Page 22 of 50 2.4 Sediment Sample Results Sediment samples were collected from two locations in 2004 and analyzed for gamma radionuclides. As in previous years, Cesium-137 attributable to ANO was detected in the discharge sediment. However, ANO personnel have noted no definable trends associated with this radionuclide at the discharge location. The concentration detected during 2004 was below that of historical averages (1999 - 2003) seen at this location. Since reporting levels for radionuclides in sediment have not been established, an evaluation of potential dose to the public from this media was performed as shown in Attachment 2. The annual maximum dose from all radionuclides to the skin and total body was <0.01 millirem.

Design objectives given in 10CFR50, Appendix I for liquid effluents are annual doses of <3 millirem total body and <10 millirem any organ. The values of <0.01 millirem for the skin and total body are well within the design objective criteria. Therefore, the level of radionuclides detected in 2004 had no significant impact on the environment or public.

2.5 Milk Sample Results Milk samples were not collected during 2004 due to the unavailability of indicator locations within 8-km of ANO. Since there are no dairies within five miles of the ANO site, it is concluded ANO's operation had no impact on this pathway in 2004.

2.6 Fish Sample Results Fish samples were collected from two locations and analyzed for gamma radionuclides. In 2004, gamma radionuclides were below detectable limits, which is consistent with the preoperational monitoring period and operational results since 1997. Therefore, based on these measurements, ANO operations had no significant radiological impact upon the environment or public by this pathway.

2.7 Food Product Sample Results Food product samples were collected when available from two locations in 2004 and analyzed for Iodine-131 and gamma radionuclides. The 2004 levels remained undetectable, as has been the case in previous years. Therefore, since levels continue to remain at background, it can be concluded that plant operations is not impacting this pathway.

Attachment to OCAN050501 Page 23 of 50 2.8 Land Use Census Results ANO personnel conduct a land use census biannually. The most recent land use census was conducted in 2003. Therefore, a census was not required for this reporting year.

2.9 Interlaboratory Comparison Results RBS' Environmental Laboratory analyzed interlaboratory comparison samples for ANO to fulfill the requirements of ANO Units 1 and 2 ODCM Section 2.6.3.

Attachment 1, 2004 Radiological Environmental Monitoring Report, contains these results. ANO's review of RBS' interlaboratory comparison indicated that 100% of the sample results for accuracy and precision were within the acceptable control limits of the three normalized deviations.

Attachment to OCAN050501 Page 24 of 50 Figure 2-1 TLD Radiation Dose nRj* 1999aiO41l adjrs 12 F 91F 198n D1a fi n x 0 0 ax ai

  • Dx E x - a 1 0 na ba x s0 3 x x xN x x A s x x nIs x x X X E XX 6p 199MI3MOrtrl LoionMinuin (-3Stb 3

0

-N M ,q w w 8 8 - ° .Du" e" ' IMI" t, o! e 8 LD ,, - VI . . . . .r T r t T r

Attachment to OCAN050501 Page 25 of 50 3.0 Radiological Environmental Monitoring Program Summary 3.1 2004 Program Results Summary Table 3.1 summarizes the 2004 REMP results. ANO 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.

Attachment to OCAN050501 Page 26 of 50 TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: ANO - Units 1 and 2 Docket No: 50-313 and 50-368 Location of Facility: Pope County, Arkansas Reporting Period: January - December 2004 Sample Type Type & LLD b Indicator Location with Highest Annual Control Number of (Units) Number Locations Mean Locations Nonroutine of Analyses a Mean (F) c Mean (F) c Results e

[Range I [Range ]

Mean ( F) c Location d [Range I _

Air Particulates GB 129 0.01 0.026 ( 77 / 77) Station 2 0.033 (26 /26) 0.023 (52 / 52) 0 (pCi/m3) [0.014- 0.298] (2400, 0.5 mi) [0.014 -0.298 [0.012 - 0.039]

Airborne Iodine I-131 129 0.07 <LLD N/A N/A <LLD 0

( pCi/m3 )

Attachment to OCANOSOSOI Page 27 of 50 Inner Ring TLDs Gamma 63 (D 8.2(63/63) Station 56 10.0(4/4) N/A 0 (mR/Qtr) [5.0- 10.0] ( 2730, 0.4 mi ) [N/A ]

Special Interest Gamma 28 M) 7.3 ( 28 / 28 ) Station 127 8.5 (4/4) N/A 0 TLDs [5.0-9.0] ( 970, 5.2 mi ) [8.0-9.0]

(mR/Qtr)

Station 137 8.5 (4/4)

( 1500, 8.1 mi ) [8.0-9.0]

N/A Gamma 4 (f) N/A N/A 7.0 (4/4) 0 Control TLD [N/A ]

(mR/Qtr)

A I - - - a

Attachment to OCAN050501 Page 28 of 50 TABLE 3.1 Radioloeical Environmental Monitoring Prozram Summary Name of Facility: ANO - Units 1 and 2 Docket No: 50-313 and 50-368 Location of Facility: Pope County, Arkansas Reporting Period: January - December 2004 Sample Type Type & Number LLD b Indicator Location Location with Highest Annual Control Number of (Units) of Analyses a Mean (F) C Mean Locations Nonroutine

[Range Mean (F) C Results e

. [Range Mean (F) c Location d [ Range I Surface Water H-3 8 3000 544.3 (4 /4) Station 8 544.3 (4 /4) 282.0 ( 1 /4) 0 (pCUIn) [386.0-872.01]- (1800,0.1 mi) [386.0-872.0] [N/A]

GS 24 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 I-131 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

Attachment to OCAN050501 Page 29 of 50 TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: ANO - Units 1 and 2 Docket No: 50-313 and 50-368 Location of Facility: Pope County, Arkansas Reporting Period: January - December 2004 Sample Type Type & LLD b Indicator Location with Highest Annual Control Number of (Units) Number Locations Mean Locations Nonroutine of Analyses a Mean (F) c Mcan (F) c Results e

[Range I [Range Mean (F) c Drinking GB 8 4 2.53 (3 /4)

Location d Station 14

[Range 2.53 (3 /4)

I -

2.88 (3 /4) 0 Water [1.34 -3.68] (700, 5.3 mi) [1.34 -3.68] [2.49 - 3.381 (pCi/i)LD / <L 1-131 8 1.0 <LLD N/A N/A <LLD 0

<LLD N/A <LLD H-3 8 2000 N/A 0 GS 8 <LLD 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 N/A N/A <LLD 0

Attachment to OCAN050501 Page 30 of 50 Bottom GS 2 Sediment Cs-134 150 <LLD N/A N/A <LLD 0 (pCi/kg) Cs-137 180 318.3 (1/1) Station 8 318.3 (1/1) <LLD 0

[N/A] (245 0 ,0.7mi) [N/A]

Attachment to OCAN050501 Page 31 of 50 TABLE 3.1 Radiological Environmental Monitoring Proeram Summary Name of Facility: ANO - Units 1 and 2 Docket No: 50-313 and 50-368 Location of Facility: Pope County, Arkansas Reporting Period: January - December 2004 Sample Type Type & Number LLD b Indicator Location Location with Highest Annual Control Number of (Units) of Analyses a Mean (F) c Mean Locations Nonroutine

[Range I Mean (F) c Rcsults e

_ Range Mean (F) C Location d [Range l Fish GS 2 (pCi/kg) Mn-54 130 <LLD N/A N/A <LLD 0 Fe-59 260 <LLD N/A N/A <LLD 0 Co-58 130 <LLD N/A N/A <LLD 0 Co-60 130 <LLD N/A N/A <LLD 0 Zn-65 260 <LLD N/A N/A <LLD 0 Cs-134 130 <LLD N/A N/A <LLD 0 Cs-137 150 <LLD N/A N/A <LLD 0 Food Products 1-131 6 60 <LLD N/A N/A N/A 0 (pCi/kg)

GS 6 Cs-134 60 <LLD N/A N/A N/A 0 Cs-137 80 <LLD N/A N/A N/A 0 a GB = Gross beta; 1-131 = Iodine-131; H-3 = Tritium; GS = Gamma scan.

b LLD - Required lower limit of detection based on ANO Units 1 and 2 ODCM Tables 2.6-2.

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

Attachment to OCANO5O5OI Page 32 of 50 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 ANO Units 1 and 2 ODCM Tables 2.6-2.

Attachment to OCAN050501 Page 33 of 50 Attachment 1 2004 Radiological Monitoring Report Summary of Monitoring Results

Attachment to OCAN050501 Page 34 of 50 TABLE OF CONTENTS TABLE 1.1 AIR PARTICULATE 32 TABLE 1.2 RADIOIODINE CARTRIDGE 33 TABLE 2.1 THERMOLUMINESCENT DOSIMETERS 34 TABLE 2.2 THERMOLUMINESCENT DOSIMETERS 35 TABLE 3.1 SURFACE WATER (GAMMA ISOTOPIC) 36 TABLE 3.2 SURFACE WATER (TRITIUM) 38 TABLE 4.1 DRINKING WATER (GAMMA ISOTOPIC & 1-131) 39 TABLE 4.2 DRINKING WATER (TRITIUM) 40 TABLE 5.1 SEDIMENT 41 TABLE 6.1 FISH 42 TABLE 7.1 FOOD PRODUCTS 43 TABLE 8.1 INTERLABORATORY COMPARISON 44

Attachment to OCAN050501 Page 35 of 50 Table 1.1 Sample Type: Air Particulate Analysis: Gross Beta Units: pCi/M3 Start Date End Date Station 1 Station 2 Station 56 Station 6 Station 7 (Indicator (Indicator (Indicator) (Control) (Control)

) )

Required LLD + 0.01 0.01 0.01 0.01 0.01 12/30/2003 01/13/2004 0.029 0.298 0.028 0.029 0.029 01/13/2004 01/27/2004 0.037 0.036 0.035 0.039 0.037 01/27/2004 02/10/2004 0.039 0.037 0.031 0.038 0.038 02/10/2004 02/24/2004 0.029 0.029 0.028 0.031 0.030 02/24/2004 03/09/2004 0.017 0.015 0.016 0.018 0.015 03/09/2004 03/23/2004 0.017 0.018 0.019 0.018 0.019 03/23/2004 04/06/2004

  • 0.015 0.016 0.018 0.017 04/06/2004 04/20/2004 0.020 0.021 0.021 0.022 0.023 04/20/2004 05/04/2004 0.014 0.015 0.014 0.013 0.015 05/04/2004 05/18/2004 0.020 0.020 0.021 0.035 0.021 05/18/2004 06/01/2004 0.017 0.021 0.017 0.015 0.017 06/01/2004 06/15/2004 0.015 0.017 0.016 0.014 0.015 06/15/2004 06/29/2004 0.018 0.018 0.020 0.016 0.017 06/29/2004 07/13/2004 0.015 0.014 0.015 0.012 0.014 07/13/2004 07/27/2004 0.020 0.018 0.023 0.020 0.021 07/27/2004 08/10/2004 0.025 0.025 0.027 0.024 0.027 08/10/2004 08/24/2004 0.023 0.023 0.025 0.025 0.022 08/24/2004 09/07/2004 0.018 0.020 0.022 0.019 0.021 09/07/2004 09/21/2004 0.019 0.021 0.022 0.019 0.022 09/21/2004 10/05/2004 0.027 0.026 0.027 0.027 0.029 10/05/2004 10/19/2004 0.022 0.024 0.022 0.021 0.022 10/19/2004 11/02/2004 0.023 0.018 0.018 0.016 0.017 11/02/2004 11/16/2004 0.021 0.023 0.024 0.024 0.024 11/16/2004 11/30/2004 0.019 0.017 0.020 0.018 0.018 11/30/2004 12/14/2004 0.031 0.031 0.031 0.028 0.031 12/14/2004 12/28/2004 0.027 0.028 0.030 0.026 0.028
  • Sample missed. See AREOR "Summary" for explanation.

Attachment to OCAN050501 Page 36 of 50 Table 1.2 Sample Type: Radioiodine Cartridge Analysis: Iodine-131 Units: pCi/M3 Start Date End Date Station I Station 2 Station 56 Station 6 Station 7 (Indicato (Indicator (Indicator) (Control) (Control) r) )

Required LLD 4 0.07 0.07 0.07 0.07 0.07 12/30t2003 01/13/2004 <0.019 <0.023 <0.015 <0.021 <0.0 18 01/13t2004 01/27/2004 <0.017 <0.016 <0.016 <0.018 <0.017 01/27/2004 02/10/2004 <0.010 <0.012 <0.016 <0.014 <0.0 11 02/10/2004 02/24/2004 <0.014 <0.018 <0.0 14 <0.0 11 <0.015 02/24/2004 03/09/2004 <0.019 <0.023 <0.021 <0.019 <0.0 16 03/09/2004 03/23/2004 <0.0 14 <0.013 <0.0 14 <0.014 <0.012 03/23/2004 04/06/2004 <0.019 <0.019 <0.025 <0.0 18 04/06/2004 04/20/2004 <0.018 <0.018 <0.015 <0.0 18 <0.015 04/20/2004 05/04/2004 <0.019 <0.019 <0.020 <0.018 <0.014 05/04/2004 05/18/2004 <0.018 <0.019 <0.017 <0.043 <0.015 05/18/2004 06/01/2004 <0.018 <0.027 <0.021 <0.021 <0.0 16 06/01/2004 06/15/2004 <0.0 1I <0.019 <0.016 <0.0 16 <0.0 17 06/15/2004 06/29/2004 <0.0 16 <0.020 <0.017 <0.0 18 <0.024 06/29/2004 07/13/2004 <0.0 13 <0.0 14 <0.01 1 <0.0 18 <0.0 12 07/13/2004 07/27/2004 <0.016 <0.022 <0.017 <0.019 <0.0 17 07/27/2004 08/10/2004 <0.021 <0.020 <0.017 <0.0 16 <0.016 08/10/2004 08/24/2004 <0.016 <0.019 <0.0 12 <0.020 <0.01 8 08/24/2004 09/07/2004 <0.014 <0.022 <0.016 <0.020 <0.020 09/07/2004 09/21/2004 <0.018 <0.021 <0.014 <0.020 <0.012 09/21/2004 10/05/2004 <0.014 <0.0 13 <0.0 16 <0.0 18 <0.0 19 10/05/2004 10/19/2004 <0.013 <0.013 <0.0 11 <0.015 <0.013 10/19/2004 11/02/2004 <0.031 <0.012 <0.014 <0.0 12 <0.0 12 11/02/2004 11/16/2004 <0.033 <0.014 <0.0 19 <0.017 <0.0 14 11/16/2004 11/30/2004 <0.014 <0.014 <0.013 <0.013 <0.012 11/30/2004 12/14/2004 <0.020 <0.020 <0.0 16 <0.0 18 <0.016 12/14/2004 12/28/2004 <0.023 <0.020 <0.023 <0.027 <0.018

  • Sample missed. See AREOR "Summary" for explanation

Attachment to OCAN050501 Page 37 of 50 Table 2.1 Sample Type: Thermoluminescent Dosimeters Analysis: Gamma Dose Units: mrem/Qtr Inner Ring (Indicators)

Station 1st Qtr '03 2nd Qtr '03 3rd Qtr '03 4th Qtr '03 Annual Mean '03 (mrem) (mrem) (mrem) (mrem) (mrem) 3 6.0 6.0 - 5.0 5.0 5.5 145 7.0 8.0 8.0 8.0 7.8 146 8.0 8.0 8.0 9.0 8.3 147 7.0 7.0 7.0 6.0 6.8 I 8.0 9.0 8.0 9.0 8.5 148 8.0 9.0 8.0 8.3 110 8.0 9.0 9.0 7.0 8.3 149 7.0 9.0 9.0 7.0 8.0 4 8.0 8.0 8.0 7.0 7.8 150 9.0 10.0 9.0 8.0 9.0 151 10.0 10.0 9.0 9.0 9.5 2 8.0 9.0 9.0 7.0 8.3 56

  • 10.0 10.0 10.0 10.0 10.0 109 9.0 9.0 9.0 8.0 8.8 108 9.0 9.0 10.0 8.0 9.0 152 7.0 8.0 9.0 8.0 8.0
  • Station with highest annual mean.
    • Sample missed. See AREOR "Summary" for explanation

Attachment to OCAN050501 Page 38 of 50 Table 2.2 Sample Type: Thermoluminescent Dosimeters Analysis: Gamma Dose Units: mrem/Qtr Special Interest Areas - (Population Centers & Schools)

Station 1st Qtr '03 2nd Qtr '03 3rd Qtr '03 4th Qtr '03 Annual Mean '03 (mrem) (mrem) (mrem) (mrem) (mrem) 6 8.0 8.0 7.0 6.0 7.3 111 6.0 6.0 5.0 6.0 5.8 116 8.0 8.0 8.0 7.0 7.8 125 5.0 5.0 5.0 5.0 5.0 127

  • 8.0 9.0 9.0 8.0 8.5 137
  • 8.0 9.0 9.0 8.0 8.5 153 8.0 9.0 8.0 7.0 8.0
  • Stations with highest annual mean.

Special Interest Areas - (Control)

Station 1st Qtr '03 2nd Qtr '03 3rd Qtr '03 4th Qtr '03 Annual Mean '03 (mrem) (mrem) (mrem) (mrem) (mrem) 7 7.0 7.0 7.0 7.0 7.0

Attachment to OCAN050501 Page 39 of 50 Table 3.1 Sample Type: Surface Water Analysis: Gamma Isotopic Units: pCi/l Location Start End Mn- Fc-59 Co-58 Co-60 Zn- Zr-95 Nb- 1-131 Cs- Cs- Ba- La-Date Date 54 65 95 134 137 140 140 Required LLD + 15 30 15 15 30 30 15 15 15 18 60 15 Station 8 (Indicator) 12/31/2003 01/31/2004 <4.00 <8.32 <3.98 <3.57 <7.39 <5.93 <4.26 <8.56 <3.58 <3.36 <20.35 <8.39 Station 10 (Control) 12/31/2003 01/31/2004 <4.15 <9.58 <3.75 <4.22 <7.33 <7.58 <3.79 <9.75 <4.31 <3.47 <21.48 <5.57 Station 8 (Indicator) 01/31/2004 02/29/2004 <4.46 <10.67 <3.09 <4.32 <9.67 <7.86 <4.54 <8.30 <4.56 <4.64 <24.60 *t- <3.54 Station 1O (Control) 01/31/2004 02/29/2004 <5.37 <9.73 <5.34 <3.80 <12.73 <9.36 <6.10 <6.76 <3.00 <5.24 <21.63 <4.41 Station 8 (Indicator) 02/29/2004 03/31/2004 <3.75 <4.79 <2.87 <2.29 <7.11 <5.46 <2.79 <4.18 <3.16 <2.98 <15.49 <3.68 Station 10 (Control) 02/29/2004 03/31/2004 <2.70 <7.44 <3.02 <3.49 <5.97 <5.49 <3.91 <6.53 <3.79 <3.79 <17.96 <4.69 Station 8 (Indicator) 03/31/2004 04/30/2004 <3.73 <10.84 <5.95 <8.29 <10.49 <8.50 <6.51 <8.05 <5.85 <5.54 <27.24-< <9.87 Station 10 (Control) 03/31/2004 04/30/2004 <5.62 <9.01 <5.15 <6.23 <12.13 <10.97 <4.97 <10.37 <6.00 <5.98 <28.82 <11.14 Station 8 (Indicator) 04/30/2004 05/31/2004 <4.05 <6.63 <3.42 <3.38 <7.90 <6.39 <4.19 <6.86 <3.78 <4.22 <20.10 <6.02 Station 10 (Control) 04/30/2004 05/31/2004 <3.61 <6.07 <2.78 <.87 <7.21 <5.70 <2.87 <7.42 <3.18 <3.71 <16.27 <6.99 Station 8 (Indicator) 05/31/2004 06/30/2004 <3.78 <8.40 <3.12 <2.56 <6.71 <5.94 <3.73 <6.28 <4.14 <3.36 <15.48 <5.12 Station 10 (Control) 05/31/2004 06/30/2004 <3.48 <7.52 <3.69 <4.06 <8.70 <7.04 <4.56 <5.91 <4.37 <3.35 <17.36 <5.43

Attachment to OCAN050501 Page 40 of 50 Table 3.1 Sample Type: Surface Water Analysis: Gamma Isotopic Units: pCi/i Location Start End Mn- Fe-59 Co-58 Co-60 Zn- Zr-95 Nb- 1-131 Cs- Cs- Ba- La-Date Date 54 65 95 134 137 140 140 Required LLD 4 15 30 15 15 30 30 15 15 15 18 60 15 Station 8 (Indicator) 06/30/2004 07/31/2004 <5.32 <11.26 <5.29 <5.10 <9.18 <9.52 <6.25 <11.84 <5.26 <4.07 <25.46 <8.92 Station 10 (Control) 06/30/2004 07/31/2004 <4.19 <10.55 <3.92 <4.40 <13.27 <6.65 <4.84 <11.20 <5.33 <1.64 <33.36 I <3.72 Station 8 (Indicator) 07/31/2004 08/31/2004 <4.26 <3.28 <3.00 <3.86 <8.46 <5.54 <4.17 <8.38 <4.09 <3.33 <19.50 <6.41 Station 10 (Control) 07/31/2004 08/31/2004 <3.17 <7.33 <3.92 <2.33 <8.39 <6.29 <3.90 <7.88 <4.01 <2.73 <20.41 <5.76 Station 8 (Indicator) 08/31/2004 09/30/2004 <5.42 <10.19 <6.67 <4.76 <10.72 <8.12 <4.03 <9.50 <5.68 <4.99 <23.79 <6.57 Station 10 (Control) 08131/2004 09/30/2004 <3.97 <9.81 <4.28 <3.70 <9.43 <7.89 <4.14 <6.78 <4.56 <4.25 <16.25 <4.29 Station 8 (Indicator) 09/30/2004 10/31/2004 <5.79 <9.76 <4.81 <4.88 <10.44 <10.14 <5.37 <7.97 <5.70 <5.70 <19.07 <10.13 Station 10 (Control) 09/30/2004 10/31/2004 <4.49 <6.47 <4.50 <4.42 <4.45 <8.32 <4.74 <6.51 <5.62 <5.68 <21.10 <7.98 Station 8 (Indicator) 10/31/2004 11/30/2004 <3.62 <6.21 <3.45 <3.09 <7.87 <5.59 <3.51 <3.42 <3.89 <3.66 <15.16 <4.14 Station 10 (Control) 10/31/2004 11/30/2004 <2.78 <5.93 <2.86 <3.32 <5.83 <5.41 <3.35 <4.37 <3.63 <3.14 <10.93 <4.42 Station 8 (Indicator) 11/30/2004 12/31/2004 <5.06 <11.74 <4.48 <3.46 <6.62 <7.55 <5.75 <13.17 <5.22 <5.79 <35.08 <7.88 Station 10 (Control) 11/30/2004 12/31/2004 <3.67 <9.13 <5.47 <4.03 <10.12 <7.90 <7.22 <10.79 <5.12 <5.72 <17.44 <11.74

Attachment to OCAN050501 Page 41 of 50 Table 3.2 Sample Type: Surface Water Analysis: Tritium Units: pCi/I Location Begin Date End Date H-3 Required LLD 4 3000 Station 8 (Indicator) 12/31/03 03/31/04 430 Station 10 (Control) 12/31/03 03/31/04 <611 Station 8 (Indicator) 03/31/04 06/30/04 386 Station 10 (Control) 03/31/04 06/30/04 <569 Station 8 (Indicator) 06/30/04 09/30/04 489 Station 10 (Control) 06/30/04 09/30/04 <578 Station 8 (Indicator) 09/30/04 12/31/04 872 Station 10 (Control) 09/30/04 12/31/04 282

Attachment to OCAN050501 Page 42 of 50 Table 4.1 Sample Type: Drinking Water Analysis: Gross Beta, Iodine-13 1 and Gamma Isotopic Units: pCi/I Location Collection Gross 1-131 Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-95 Nb-95 Cs-134 Cs-137 Ba-140 La-140 Date Beta Required LLD 4 4.0 1.0 15 30 15 15 30 30 15 15 18 60 15 Station 14 (Indicator) 03/09/04 2.56 <0.90 <4.96 <8.36 <4.18 <5.09 <14.15 <8.61 <5.89 <5.41 <5.64 <25.86 <6.94 Station 57 (Control) 03/09/04 3.38 <0.84 <7.24 <10.28 <5.41 <5.89 <9.43 <10.65 <5.55 <5.82 <6.75 <25.36 <7.88 Station 14 (Indicator) 06/15/04 1.34 <0.90 <4.32 <8.68 <3.50 <3.26 <6.40 <6.43 <3.16 <3.61 <3.13 <17.77 <6.39 Station 57 (Control) 06/15/04 2.76 <0.89 <3.53 <5.62 <3.49 <3.49 <6.87 <5.96 <3.59 <3.81 <3.61 <18.79 '<4.94 Station 14 (Indicator) 09/14/04 3.68 <0.83 <3.58 <9.89 <4.46 <4.39 <7.88 <9.81 <6.88 <5.35 <4.99 <13.32 <6.88 Station 57 (Control) 09/14/04 2.49 <0.88 <3.22 <4.41 <2.81 <3.03 <7.27 <5.37 <3.10 <2.84 <3.16 <12.35 <4.78 Station 14 (Indicator) 12115/04 <1.53 <0.90 <4.01 <9.16 <3.74 <4.21 <6.92 <6.69 <4.37 <4.21 <3.66 <16.90 <5.16 Station 57 (Control) 12/15/04 <1.53 <0.90 <3.31 <8.18 <3.33 <3.58 <7.00 <6.93 <3.61 <3.34 <3.64 <16.01 <6.19

Attachment to OCAN050501 Page 43 of 50 Table 4.2 Sample Type: Drinking Water Analysis: Tritium Units: pCi/l Location Collection Date H-3 Required LLD 4 2000 Station 14 (Indicator) 03/09/04 <576 Station 57 (Control) 03/09/04 <575 Station 14 (Indicator) 06/15/04 <547 Station 57 (Control) 06/15/04 <557 Station 14 (Indicator) 09/14/04 <561 Station 57 (Control) 09/14/04 <555 Station 14 (Indicator) 12/15/04 <570 Station 57 (Control) 12/15/04 <579

Attachment to OCAN050501 Page 44 of 50 Table 5.1 Sample Type: Sediment Analysis: Gamma Isotopic Units: pCi/kg Location Collection Date Cs-134 Cs-137 Required LLD + 150 180 Station 8 10/25/04 <96.52 318.30 (Indicator)

Station 16 10/25/04 <52.49 <42.60 (Control)

Attachment to OCAN050501 Page 45 of 50 Table 6.1 Sample Type: Fish Analysis: Gamma Isotopic Units: pCi/kg Location Collection Date Mn-54 Fe-59 Co-58 Co-60 Zn-65 Cs-134 Cs-137 Required LLD 4 130 260 130 130 260 130 150 Station 8 10/17/2004 <10.74 <46.44 <13.02 <17.48 <33.37 <10.06 <13.23 (Indicator)

Station 16 09/09/2004 <21.12 <9.04 <26.22 <11.87 <53.77 <18.88 <9.81 (Control)

Attachment to OCAN050501 Page 46 of 50 Table 7.1 Sample Type: Food Products Analysis: lodine-131 and Gamma Isotopic Units: pCi/kg Location Collection Date I-131 Cs-134 Cs-137 Required LLD 4 60 60 80 Station 13 (Indicator) 06/17/2004 <57.69 <44.42 <42.26 Station 55 (Control) 06/17/2004 <53.22 <41.53 <39.35 Station 13 (Indicator) 07/13/2004 <42.79 <47.74 <36.20 Station 55 (Control) 07/13/2004 <32.45 <19.86 <18.11 Station 13 (Indicator) 08/10/2004 <59.05 <48.41 <51.41 Station 55 (Control) 08/10/2004 <57.51 <39.22 <33.06

Attachment to OCAN050501 Page 47 of 50 Table 8.1 Sample Type: Interlaboratory Comparison Analysis: Gross Beta, Iodine-131 and Gamma Isotopic Sample Type Study Date Analysi Known RBS RBS RBS (units) s Value' Valu N-Dev N-Range

.e b Charcoal Cartridge E4171-125 06/17/2004 1-131 81.9 84 0.44 0.361 (pCi/cartridge)

Water E4170-125 06/17/2004 Beta 286 251 -1.43 0.028 (pCi/liter)

E4169-125 06/17/2004 Cr-51 250 234 -1.09 0.142 Mn-54 77.4 84.3 1.55 0.916 Co-58 50.8 46.3 -1.52 0.465 Fe-59 48.9 55.3 2.28 0.725 Co-60 189 198 0.86 0.188 Zn-65 109 107 -0.26 0.108 1-131 84.3 87.0 0.55 0.841 Cs-134 111 109 -0.36 0.319 Cs-137 171 176 0.51 0.069 Ce-141 172 181 0.94 0.618 E4242-125 09/16/2004 H-3 12000 11685 -0.45 0.224 Air Filter E4240-125 09/16/2004 Beta 67.7 66.7 -0.26 0.174 E4243-125 09/16/2004 Cr-51 129 115 -1.83 0.458 Mn-54 105 104.7 -0.05 0.338 Co-58 54.8 55.5 0.23 0.614 Fe-59 53.0 56.4 1.12 0.256 Co-60 72.5 72.3 -0.05 0.807 Zn-65 103 97.1 -0.99 0.241 Cs-134 55.8 50.6 -1.60 0.191 Cs-137 124 117 -1.02 0.143 Ce-141 145 143 -0.20 0.244

Attachment to OCANO50501 I Page 48 of 50 Table 8.1 Sample Type: Interlaboratory Comparison Analysis: Tritium and Gamma Isotopic Sample Type Study Date Analysis Known RBS RBS RBS (units) Value' Value N-Dev b N-Range' Sediment E4241-125 09/16/2004 Cr-51 0.348 0.293 -2.72 0.424 (pCi/gram)

Mn-54 0.252 0.264 0.82 0.141 Co-58 0.132 0.128 -0.52 0.492 Fe-59 0.127 0.140 1.77 0.558 Co-60 0.174 0.174 0.03 0.339 Zn-65 0.248 0.264 1.09 0.333 Cs-134 0.134 0.130 -0.52 0.485 Cs-137 0.403 0.426 1.00 0.132 Ce-141 0.348 0.352 0.20 0.424 Milk E4172-125 06/17/2004 Cr-51 228 251 1.72 0.181 (pCi/liter) Mn-54 70.5 74.0 0.86 0.335 Co-58 46.2 46.0 -0.07 0.384 Fe-59 44.5 44.4 -0.04 1.818 Co-60 172 173 0.13 0.206 Zn-65 99.3 91.7 -1.33 0.535 1-131 58.2 53.7 -1.35 0.710 Cs-134 101 93.3 -1.31 0.234 Cs-137 156 147 -1.04 0.265 Ce-141 157 145 -1.29 0.263 NOTES:

(a) The "known" value as determined by Analytics.

(b) The normalized deviation from the "known" value is computed from the deviation and the standard error of the mean; k2.00 is the warning limit and +3.00 is the control limit. This is a measure of accuracy of the analytical methods.

(c) The normalized range is computed from the mean range, the control limit and the standard error of the range; +2.00 is the warning limit and +3.00 is the control limit.

This is a measure of precision of the analytical methods.

Interlaboratory Comparison Program Exceptions There were no results outside the control limits for accuracy in the 2004 cross check program participation studies.

Attachment to OCAN050501 Page 49 of 50 ATTACHMENT 2 Sediment Dose Calculations

Attachment to OCAN050501 Page 50 of 50 Sediment Dose Calculations Dose calculation for the discharge sediment was performed using generalized equation found in Regulatory Guide 1.109, Appendix A as follows:

R= (40)x(C)x(U)x(D)x(W)

R= Annual dose to skin or total body in mrem/year; 40= Area-mass conversion factor given in Appendix A of Regulatory Guide 1.109 in Kg/m 2 ;

C= 2004 maximum radionuclide concentration in pCi/kg; U= Maximum exposure time given in Table E-5 of Regulatory Guide 1.109 (67 hours7.75463e-4 days <br />0.0186 hours <br />1.107804e-4 weeks <br />2.54935e-5 months <br /> for teenager);

D= External dose conversion factor for standing on contaminated ground given in Table E-6 of Regulatory Guide 1.109 in mrem/hr per pCi/m2 , and W= Shore-width factor (0.1) given in Table A-2 of Regulatory Guide 1.109.

(Dose from Sediment in Millirem/Year)

Radionuclide 2004 Maximum Conversion Factor Total Conversion Factor Total Concentration For Skin Skin Dose For Total Body Body Dose Cs-137 318.3 4.90 E-09 4.18 E-04 4.20 E-09 3.58 E-04 TOTAL 4.18 E-04 3.58 Ei04S

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