RBG-46561, Radiological Environmental Operating Report for 2005, River Bend Unit 1

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Radiological Environmental Operating Report for 2005, River Bend Unit 1
ML061420297
Person / Time
Site: River Bend Entergy icon.png
Issue date: 04/24/2006
From: Lorfing D
Entergy Operations
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
RBF1-06-0073, RBG-46561
Download: ML061420297 (50)
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Text

Entergy Operations, Inc.

River Bend Station 5485 U.S. Highway 61 N St. Francisville, LA 70775 Entend Tel 225 381 4157 Fax 225 635 5068 dlorfin~entergy.com David N. Lorfing Manager-Licensing April 24, 2006 U.S. Nuclear Regulatory Commission Document Control Desk 11555 Rockville Pike Rockville, MD 20852-2738

Subject:

Radiological Environmental Operating Report for 2005 River Bend Station - Unit 1 License No. NPF-47 Docket No. 50-458 File Nos.: G9.5, G9.25.1.5 RBG-46561 RBF1-06-0073 Ladies and Gentlemen:

Enclosed is the River Bend Station (RBS) Annual Radiological Environmental Operating Report for the period January 1, 2005, through December 31, 2005. This report is submitted in accordance with the RBS Technical Specifications, Section 5.6.2.

Should you have any questions regarding the enclosed information, please contact Mr. Bill Fountain at (225) 381-4625.

Sincerely, David N. Lorfing Manager - Licensing DNL/xwjf enclosure

Radiological Environmental Operating Report for 2005 RBG-46561 Page 2 of 2 cc: U.S. Nuclear Regulatory Commission Region IV -

611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011 NRC Resident Inspector PO Box 1050 St. Francisville, LA 70775 Mr.Bahlchandra Vaidya, Project Manager U.S. Nuclear Regulatory Commission MS 0-7D1A 11555 Rockville Pike Rockville, MD 20852-2738

RIVER BEND STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 2005 Compiled By:

McGehee Reed Sr. Environmental Specialist Reviewed By:

Michael Boyle - Troy 4 Dm ea l Manager Radiation Protection Superintendent Chemistry Approved By:

",b-ru S ... .. _

4, -

Donald W. Vinci ------

General Manager Plant Operations

RIVER BEND STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 2005 Compiled By:

McGehee Reed Sr. Environmental Specialist Reviewed By:

A 7= , S Michael Boyle / Troy De ett Manager Radiation Protection Superintendent Chemistry Approved By:

Donald W. Vinci General Manager Plant Operations

TABLE OF CONTENTS

SUMMARY

1

1.0 INTRODUCTION

5 1.1 Radiological Environmental Monitoring Program 5 1.2 Pathways Monitored 5 1.3 Land Use Census 5 2.0 INTERPRETATION AND TRENDS OF RESULTS 16 2.1 Air Particulate and Radioiodine Sample Results 16 2.2 Thermoluminescent Dosimetry Sample Results 16 2.3 Water Sample Results 16 2.4 Sediment Sample Results 17 2.5 Milk Sample Results 18 2.6 Fish and Invertebrate Sample Results 18 2.7 Food Products Sample Results 18 2.8 Land Use Census Results 18 2.9 Interlaboratory Comparison Results 19 3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

22 3.1 2005 Program Results Summary 22 i

LIST OF TABLES TABLE 1.1 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM 7 TABLE 2.1 LAND USE CENSUS RESULTS 20 TABLE 3.1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

23 ii

LIST OF FIGURES FIGURE 1-1 EXPOSURE PATHWAYS 13 FIGURE 1-2 SAMPLE COLLECTION SITES - NEAR FIELD 14 FIGURE 1-3 SAMPLE COLLECTION SITES - FAR FIELD 15 FIGURE 2-1 TLD INDICATOR RESULTS VERSUS CONTROL DATA 21 FIGURE 2-2 GROSS BETA INDICATOR RESULTS VERSUS CONTROL DATA 21 iii

LIST OF ATTACHMENTS ATTACHMENT I 2005 RADIOLOGICAL MONITORING REPORT

SUMMARY

OF MONITORING RESULTS 28 iv

Summary The Annual Radiological Environmental Operating Report presents data obtained through analyses of environmental samples collected for the River Bend Station (RBS) Radiological Environmental Monitoring Program (REMP) for the period January 1, 2005 through December 31, 2005. This report fulfills a requirement specified in RBS Technical Requirements Manual (TRM) 5.6.2 as required by Technical Specification 5.6.2 of Appendix A to RBS License Number NPF-47. During 2005, REMP results remained at background levels, as has been the case in previous years.

All required lower limit of detection (LLD) capabilities were achieved in all sample analyses during 2005. No measurable levels of radiation above baseline levels were detected in the vicinity of River Bend Station. The 2005 Radiological Environmental Monitoring Program thus substantiated the adequacy of source control and effluent monitoring at River Bend Station with no observed impact of plant operations on the environment.

Radiological Environmental Monitoring Program RBS established the REMP prior to the station's becoming operational (1985) to provide data on background radiation and radioactivity normally present in the area. RBS has continued to monitor the environment by sampling air, water, sediment, fish and food products, as well as measuring direct radiation. RBS also samples milk if milk-producing animals used for human consumption are present within five miles (8 kIn) 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. RBS personnel compare indicator results with control and preoperational results to assess any impact RBS operation might have had on the surrounding environment.

In 2005, environmental samples were collected for radiological analysis. The results of indicator locations were compared with control locations and previous studies. It was concluded that overall, no significant relationship exists between RBS operation and effect on the area around the plant. The review of 2005 data, in many cases, showed radioactivity levels in the environment were undetectable in many locations and near background levels in significant pathways.

Harmful Effects or Irreversible Damage The REMP monitoring did not detect any harmful effects or evidence of irreversible damage in 2005. Therefore, no analysis or planned course of action to alleviate problems was necessary.

1

Reporting Levels RBS's review indicates that no samples equaled or exceeded reporting levels for radioactivity concentration in environmental samples, as outlined in RBS Technical Requirements Manual Table 3.12.1-2, when averaged over any calendar quarter. Therefore, 2005 results did not result in any Radiological Monitoring Program Special Reports.

Radioactivity Not Attributable to RBS The RBS REMP detected no radioactivity attributable to other sources during year 2005.

Following the radioactive plume release due to reactor core degradation at the Chernobyl Nuclear Power Plant in 1986, RBS REMP detected I-131 in water, vegetation, and air samples. I-131 was also detected during 1998 in the wastewater treatment plant effluent.

This was attributed to the medical treatment of a RBS employee.

Comparison to Federal and State Programs RBS 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 (Thermoluninescent Dosimeter) Direct Radiation Monitoring Network and the Environmental Radiological Laboratory - Department of Environmental Quality Laboratory Services Division (ERL-DEQLSD).

The NRC TLD Network Program was discontinued in 1998. Historically these results have compared to those from the RBS REMP. RBS 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 ERL-DEQLSD and the RBS REMP entail similar radiological environmental monitoring program requirements. These programs include co-located air sample locations, and splitting or sharing sample media such as water, 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 Iam) of RBS in 2005 due to unavailability of milk-producing animals used for human consumption. RBS's Technical Requirements Manual requires collection of milk samples if available commercially 2

within 8 km (5 miles) of the plant. RBS personnel collected vegetation samples to monitor the ingestion pathway, as specified in RBS Technical Requirements Manual Table 3.12.1-1, because of milk unavailability.

  • Required Lower Limit of Detection (LLD) Values All LLDs during this reporting period were more conservative than the acceptable limits required by the RBS Technical Requirement Manual (TRM).
  • Sampling Deviations Listed below are sampling deviations that occurred during 2005. No LLD values were exceeded in the air sampling deviations. As described in footnote (a) to RBS Technical Requirements Manual Table 3.12.1-1, deviations are permitted from the required sampling schedule due to malfunction of equipment or other legitimate reasons.

Station Sampling Period Problem Comment Description RAS-2 3/29/04 - 9/29/04 Pump found out of Air flow data (LPM) recorded every two Air Pump (last deployment) specifications weeks indicated satisfactory operation of

  1. 1081 during calibration air pump #1081 for entire deployment API on 1/24/05 period.

AGC 2/14/05 - 2/28/05 Power outage Loss of 0.8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> (< 1% sample volume) due to local power outage of unknown origin.

AP1, 3/14/05 - 3/28/05 Power outages API and AN1 had loss of 0.3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> and ANI, AQS2 had loss of 0.4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> due to local AQS2 power outages. Both less than 1%

sample volume.

WU Semi-annual Sample was gnt Sample was collected 6/29/05 after groundwater sample due collected due to temporary repair within plant schedule 6-9-05 inoperative pump late date.

ANI, AP1 6/20/05 - 7/5/05 Power outages ANI loss of 210.7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> (58% volume) due to lighting strike. API loss of 4.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> (1.2 %volume).

AQS2 7/18/05 - 8/1/05 Power outage Loss of 30 minutes (<1% volume) due to weather related power outage.

API, ANI 8/1/05 - 8/15/05 Power outages Loss of 1.2 and 1.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> (<1% volume) each due to transformer problems on site.

API, 8/15/05 - 8/31/05 Power outages Loss of 47.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> (12.3% volume), 47.9 ANI, hours (12.4% volume), and 6.2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> AGC (1.6%volume) due to Hurricane Katrina.

API, ANI 8/31/05 - 9/12/05 Power outages Loss of 7.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> (2.5% volume) and 4.4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> (1.5% volume) due to Hurricane Katrina.

API, 9/12/05 - 9/26/05 Power outages Loss of 0.2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> (<1% volume) at API ANM,AGC and ANM; loss of 5.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> (1.6%

volume) at AGC due to Hurricane Rita.

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  • Missed Samples A down-gradient ground water sample was not collected per plant schedule on 6/9/05, due to an inoperative well pump. The sample was finally collected on 6/29/05 after a temporary repair was completed. The actual collection date was within the plant surveillance late date.
  • Unavailable Results No sample results during 2005 were unavailable.

Program Modifications RBS made no modifications to the REMP during the year 2005.

Attachments contains results of air, TLD, water, sediment, fish, food products and special samples collected in 2005. TLDs were analyzed by Waterford-3 Dosimetry. All remaining samples were analyzed by RBS Environmental Laboratory. Attachment 1 also contains RBS' participation in the Interlaboratory Comparison Program during the year 2005.

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1.0 Introduction 1.1 Radiological Environmental Monitoring Program RBS 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 RBS.
  • 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 1-1, are monitored as required by the RBS Technical Requirements Manual 3.12.1. A description of the RBS REMP sample locations utilized to monitor exposure pathways are described in Table 1.1 and shown in Figures 1-2 and 1-3. RBS may occasionally supplement this program with additional sampling in order to provide a comprehensive and well-balanced program.

Section 2.0 of this report provides a discussion of 2005 sampling results with Section 3.0 providing a summary of results for the monitored exposure pathways.

1.3 Land Use Census RBS personnel conduct a land use census biannually, as required by RBS Technical Requirements Manual 3.12.2. The last land use census was performed in 2004. The purpose of this census is to identify changes in uses of land within five miles of RBS that would require modifications to the REMP or the Technical Requirements Manual. The most important criteria during this census is to determine the 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
  • 5

The method used by RBS personnel for conducting this land use census is as follows:

  • RBS 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 County Agents from each parish area is used especially in verifying the presence of milk animals in the five mile radius of River Bend.
  • As a result of these surveys, the following information is obtained in each meteorological sector:
1) Nearest permanent residence
2) Nearest milking animal
  • RBS personnel identify locations on the map, measure distances to RBS and record results. Distance and direction from RBS reactor building is also determined by use of a GPS instrument.
  • Locations, if any, are identified which yield a calculated dose or dose commitments greater than those currently calculated in the Technical Requirements Manual.
  • RBS personnel compare results to previous census.
  • RBS personnel do not perform a garden census since Technical Requirements Manual 3.12.2 allows the routine sampling of broadleaf vegetation in the highest D/Q sector near the site boundary in lieu of the garden census.

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Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Airborne Radiolodine and Particulates 2 samples from close to the 2 SITE ANI (0.9 km W) - RBS site Hwy 965; 0.4 Continuous sampler operation Radioiodine Cannisters 131 BOUNDARY locations, in different km south of Activity Center. with sample collection every analysis every two weeks.

sectors, of the highest calculated annual average ground level D/Q. API (0.9 km WNW) - Behind River Bend two weeks, or more frequently Station Activity Center. if required by dust loading. Air Particulate - Gross beta radioactivity analysis following filter change.

Radiolodine and Particulates 1 sample from the vicinity of a AQS2 (5.8 km NW) - St. Francis community having the highest Substation on US Hwy. (Bus.) 61 in St.

calculated annual average groundlevel Francisville.

D/Q.

Radiolodine and Particulates 1 sample from a control location, as for AGC (17.0 km SE) - Entergy Service example 15 - 30 km distance and in the Center compound in Zachary. (Control) least prevalent wind direction.

Direct TLDs Radiation One ring of stations, one in each TAI (17 km N) - River Send Training Quarterly mR exposure quarterly.

meteorological sector in the general TAnt(1.

area of the SITE BOUNDARY. Center.

TBI (0.5 km NNE) - Utility pole near River Bend Station cooling tower yard area.

TC1 (1.7 km NE) - Stub pole at Jct. US Hwy. 61 and Old Highway 61.

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Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs Radiation One ring of stations, one in each Quarterly mR exposure quarterly.

meteorological sector in the general TDI (1.6 km ENE) - Stub pole along WF7, area of the SITE BOUNDARY. 150m S of Jct. WF7 and US Hwy. 61.

TEI (1.3 km E) - Stub pole along WF7, I km S of Jct. WF7 and US Hwy. 61.

TF1 (1.3 km ESE) - Stub pole along WF7, 1.6 km S of Jct. WF7 and US Hwy. 61.

TG1 (1.6 km SE) - Stub pole along WF7, 2 km S of Jct. WF7 and US Hwy. 61.

TH1 (1.7 km SSE) - Stub pole at power line crossing of WF7 (near Grants Bayou).

TJ1 (1.5 km S) - Stub pole near River Bend Station Gate #23 on Powell Station Road (LA Hwy. 965).

TKI (0.9 km SSW) - Utility pole on Powell Station Road (LA Hwy. 965), 20 m S of River Bend Station River Access Road.

TL1 (1.0 km SW) - First utility pole on Powell Station Road (LA Hwy. 965) S of former Illinois Central Gulf RR crossing.

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Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs Radiation One ring of stations, one in each TM1 (0.9 km WSW) - Third utility pole on Quarterly meteorological sector in the general Powell Station Road (LA Hwy. 965) N of mR exposure quarterly.

area of the SITE BOUNDARY. former Illinois Central Gulf RR crossing.

TNI (0.9 km W) - Utility pole along Powell Station Road (LA Hwy. 965), near garden and AN1 air sampler location.

TPI (0.9 km WNW) - Behind River Bend Station Activity Center at API air sampler location.

TQ1 (0.6 km NW) - Across from MA-1 on RBS North Access Road.

TR1 (0.8 km NNW) - River Bend Station North Access Road across from Main Plant entrance.

TLDs The balance of the stations (8) to be TAC (15.8 km N) - Utility pole at Jct. of US placed in special interest areas such Hwy. 61 and LA Hwy. 421, 7.9 km north of as population centers, nearby Bains. (Control) residences, schools, and in 1 or 2 areas to serve as control locations. TCS (12.3 km NE) - Utility pole at gate to East Louisiana State Hospital in Jackson.

(Special)

TEC (16.0 km E) - Stub pole at jct. of Hwy.

955 and Greenbrier Road, 4.8 km North of Jct.

of Hwys 955 and 964. (Control) 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 The balance of the stations (8) to be TGS (17.0 km SE) - Entergy Service Center Quarterly mR exposure quarterly.

placed in special interest areas such compound in Zachary. (Special) as population centers, nearby residences, schools, and in 1 or 2 TNS (6.0 km W) - Utility pole with electrical areas to serve as control locations. meter at west bank ferry landing (LA Hwy. 10).

(Special)

TQSI (4.0 km NW) - Utility pole front of Pentecostal church (opposite West Feliciana Parish Hospital) near Jct. US Hwy. 61 and Commerce Street. (Special)

TQS2 (5.8 km NW) - St. Francis Substation on business US Hwy. 61 in St. Francisville.

(Special)

TRS (9.2 km NNW) - Stub pole at Jct. of US Hwy. 61 and WF2 near Bains (West Feliciana High School). (Special)

Waterbome Surface Water I sample upstream and 1 sample SWU (5.0 km W) - Mississippi River about 4 Grab samples quarterly Gamma isotopic analysis ,and downstream. km upstream from the plant liquid discharge tritium analysis quarterly.

outfall, near LA Hwy. 10 ferry crossing.

SWD (7.75 km S) - Mississippi River about 4 km downstream from plant liquid discharge outfall, near paper mill.

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Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Waterborne Groundwater Samples from 1 or 2 sources only if WU (-470 m NNE) - Upland Terrace Aquifer Semiannually Gamma isotopic and tritium likely to be affected. well upgradient from plant. analysis semiannually.

WD (-470 m SW) - Upland Terrace Aquifer well downgradient from plant.

Sediment From Shoreline 1 sample from downstream area with SEDD (7.75 km S) - Mississippi River about Annually Gamma isotopic analysis existing or potential recreational value. 4 km downstream from plant liquid discharge annuallyaly.

outfall, near paper mill.

Ingestion Milk If commercially available, I sample Currently, no available milking animals within Quarterly when animals are Gamma isotopic and 1-131 from milking animals within 8 km 8 km of RBS. on pasture. analysis quarterly when animals distant where doses are calculated to be greater than 1 mrem per year. are on pasture.

I sample from milking animals at a control location 15 - 30 km distant when an indicator location exists.

Fish and Invertebrates 1 sample of a commercially and/or FD (7.75 km S) - One sample of a Annually Gamma isotopic analysis on recreationally important species in commercially and/or recreationally important edible portions annually vicinity of plant discharge area. species from downstream area influenced by plant discharge.

I sample of similar species in area not FU (4.0 km WSW) - One sample of a influenced by plant discharge. commercially and/or recreationally important species from upstream area not influenced by plant discharge.

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Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Ingestion Food Products I sample of one type of broadleaf GN1 (0.9 km W) - Sampling will be Quarterly during the growing Gamma isotopic and 1-131 vegetation grown near the SITE performed in accordance with Table 3.12.1-1 BOUNDARY location of highest Section 4.a of the Technical Requirements season. analysisquarterly.

predicted annual average ground level Manual.

D/Q if milk sampling is not performed.

1 sample of similar broadleaf GQC (32.0 km NW) - One sample of similar vegetation grown 15-30 km distant, if vegetables from LA State Penitentiary at milk sampling is not performed. Angola. (Control) 12

FIGURE 1-1 EXPOSURE PATHWAYS 13

FIGURE 1-2 SAMPLE COLLECTION SITES - NEAR FIELD

( B /

(NW) X (NNW) (NNE) /

C N

/

(NE)

N% /

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p (WNW)

N%

N (W)

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/

/

/

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I Q Uars L I H (SW) WSSE)

/

J I Emvronmental Monitoring Locations I

/ I A_ Air Sampler

/ I T_ TO

/ t

/ I WU Sampling Well (Upgradient)

/ K J WD Sampling Well (Downgradient) f

/ (SSW) I (S) GNi Onsite Garden 14

FIGURE 1-3 I J B J C

(NNE) I (NE)

I /

I /

I /

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If lbons I I I A.t Air Sampler Special I T_f TLD Indicator I T_C TLD Control TSG Special TLDs I GQC Vegetation Control S SWU Upstream Surface Water ldlomletft$

SWD Downstream Surface WatIr I SEDD Downstream Sediment FU Upstream FlshllavertebnIdes I '3 FD Downstream Fish/InverteMraves I 15

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 2005, as has been the case in previous years. Indicator gross beta air particulate results for 2005 were similar to preoperational and operational levels as seen below. Results are reported as annual average pCi/m 3 (picocuries per cubic meter).

Monitoring Period Result Preoperational 0.030 2005 0.022 2004 0.018 2003 0.021 2002 0.020 2001 0.021 Table 3.1 provides a comparison of the indicator and control location mean values, which further emphasizes that the airborne pathway continues to remain at background levels. Figure 2-2 also shows a comparison of indicator results from 2005 versus control location data from 1986 to 2004. Five indicator results for 2005 were out of the upper three-sigma limit. These results were due to the volume losses from power outages caused by hurricanes Katrina and Rita.

2.2 Thermoluminescent Dosimetry Sample Results Gamma radiation exposure in the reporting period compares to previous years and remains below preoperational levels. Figure 2-1 compares quarterly indicator results for 2005 with control location data from 1986 to 2004. All indicator results are within the upper control three-sigma limit of the control data.

RBS normalizes measured exposure to 90 days and relies on comparison of the indicator locations to the control as a measure of plant impact. RBS's comparison of the inner ring and special interest area TLD results to the controls, as seen in Table 3.1, indicates that the ambient radiation levels are unaffected by plant operations.

Therefore, levels continue to remain at or near background.

2.3 Water Sample Results Analytical results for 2005 surface water and groundwater samples were similar to those reported in previous years.

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Surface water samples were collected from two locations (indicator and control) and analyzed for gamma radionuclides and tritium. Gamma radionuclides were below detectable limits at the indicator and control locations. Tritium was also below detectable limits at all locations. Listed below is a comparison of 2005 results from the indicator location as compared to the preoperational and previous operational years. Results are reported as annual average pCi/l (picocuries per liter).

Radionuclide 2005 2001 - 2004 Preoperational Gammas <LLD <LLD <LLD Tritium <LLD <LLD <LLD Groundwater samples were collected from two locations (indicator and control) and analyzed for gamma radionuclides and tritium. Gamma radionuclides and Tritium were below detectable limits at the indicator and control locations. Listed below is a comparison of 2005 results from the indicator location as compared to the preoperational and previous operational years. Results are reported as annual average pCi/l.

Radionuclide 2005 2001 - 2004 Preoperational Gammas <LLD <LLD <LLD Tritium <LLD <LLD <LLD Based on these comparisons, the operation of RBS had no impact on this pathway during 2005, and levels of radionuclides monitored for this pathway continue to remain similar to those obtained in operational and preoperational years.

RBS personnel also collected special effluent wastewater samples from the wastewater treatment plant during 2005 to supplement the REMP. RBS did not detect any gamma radionuclides in these samples, which were analyzed to RBS TRM LLD requirements for water.

2.4 Sediment Sample Results Sediment sample was collected from the indicator location in 2005 and analyzed for gamma radionuclides. Gamma radionuclides Cs-134 and Cs-137 were below detectable limits, which is consistent with the preoperational and operational monitoring periods. Therefore, based on these measurements, RBS operations had no significant radiological impact upon the environment or public by this pathway.

RBS personnel also collected special sediment samples from East Creek and West Creek during 2005 to supplement the REMP. RBS did not detect any gamma 17

radionuclides in these samples, which were analyzed to RBS TRM LLD requirements for sediment.

2.5 Milk Sample Results Milk samples were not collected during 2005 due to the unavailability of indicator locations within 5 miles (8 kIn) of RBS. Since there are no dairies within five miles of the RBS site, it is concluded RBS's operation had no impact on this pathway in 2005.

2.6 Fish and Invertebrate Sample Results Fish samples were collected from two locations (indicator and control) and analyzed for gamma radionuclides. In 2005, gamma radionuclides were below detectable limits, which is consistent with the preoperational and operational monitoring periods.

Therefore, based on these measurements, RBS 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 (indicator and control) in 2005 and analyzed for Iodine-131 and gamma radionuclides. The 2005 levels remained undetectable, which is consistent with previous operational years. Therefore, since levels continue to remain at background, it can be concluded that plant operations is not impacting this pathway.

2.8 Land Use Census Results The current land use census was conducted during 2004 in accordance with RBS Technical Requirements Manual 3.12.2. Although there were some minor changes between the 2002 and 2004 census as seen in Table 2-1, the land use census did not identify any location(s) that yields a calculated dose or dose commitment greater than the values currently being calculated in requirement TSR 3.11.2.3.1. Most of these changes were due to the use of a GPS instrument in locating the resident's bearing and range from the reactor building, as compared to previous methods used in this process. In addition, no dairy animals were found within 8 km of RBS during the 2004 census.

RBS personnel did not perform a garden census since Technical Requirements Manual 3.12.2 allows the routine sampling of broadleaf vegetation in the highest D/Q sector near the site boundary in lieu of the garden census.

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2.9 Interlaboratory Comparison Results RBS' Environmental Laboratory analyzed interlaboratory comparison samples to fulfill the requirements of Technical Requirements Manual 3.12.3. Attachment 1, 2005 Radiological Environmental Monitoring Report, contains these results. RBS's review of interlaboratory comparison results indicated that 98% of the sample results for accuracy, and 100% of the sample results for precision were within the acceptable control limits.

19

Table 2-1 Land Use Census Results 2004 Item Sector Direction Nearest Range Nearest Range Residence (km) Milk (km)

Animal 1 A N 5498 Hwy. 61 1.8 - -

2 B NNE 5435 Hwy. 61 1.6 - -

3 C NE 4531 Old Hwy. 611 1.4 - -

4 D ENE 12657 Powell Station 1.4 - -

Road 5 E E 4585 Hwy. 61 2 2.6 - -

6 F ESE 12010 Fairview Way, 2.7 - -

Star Hill Trace Subdivision3 7 G SE 3213 Hwy. 964 4.0 -

8 H SSE 11813 Powell Station 1.7 - -

Road 9 J S 11649 Powell Station 1.8 - -

Road 10 K SSW 8909 Hwy. 9814 6.5 -

11 L SW 5 12 M WSW 13 N W I11101 Ferdinand 6.1 - -

Street 14 P WNW 10426 Old Field Road 3.7 - -

15 Q NW 9666 Hwy.965 1.3 -

16 R NNW 5898 Hwy. 616 2.6 -

1 New resident at same range of 1.4 km, compared to 2002 census, in sector C.

2 New resident at a range of 2.6 km., compared to 2.2 km. in 2002 census, in sector E.

3 New resident at a range of 2.7 km., compared to 2.8 km. in 2002 census, in sector F.

4 New resident at a range of 6.5 km., compared to 7.4 km. in 2002 census, in sector K.

5 No resident found in sector L or M within 8 km. distance.

6 New resident at a range of 2.6 km., compared to 1.7 km. in 2002 census, in sector R.

20

RGURE 2-1 7LD Indicator Results (2005) Versus Control Data (1986-2004) 20.00 - 3E

!!m 18.00- 1mgm paW-E 12.00 10.00 8.00 6.00 TAI TB1 TC1 TMl TE1 TF1 TG1 THI TJ I TL1 TPMI TN1 TPI TQ1 TRI TLD Locations

+3-signrControl- -- 3-slgnaOntrol

  • 1stQtr.04
  • 2ndQtrO4 A 3rdQtrO4 x 4thQtrO4l FIGURE 2-2 Gross Beta Indicator Results (2005) Versus Control Data (1986-2004) 0.050 0.040

.5 E 0o030 -

IL 0.020 0.010 -

0.000 i 1/512005 2/14/2005 3/28/2005 51012005 6/20/2005 8/1/2005 9/12/2005 10/24/2005 12V5/2005 I0 ANI a API A AOS2 - UER CONTROL - - LOWER CONTROL I 21

3.0 Radiological Environmental Monitoring Program Summary 3.1 2005 Program Results Summary Table 3.1 summarizes the 2005 REMP results. RBS 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.

22

TABLE 3.1 Radiological Environmental Monitoring Program Summarv Name of Facility: River Bend Station Docket No: 50458 Location of Facility: West Feliciana Parish, Louisiana Reporting Period: January - December 2005 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 Range I I Range] Results e Mean (F) c

_ Location d [ Range I Air Particulates Gross Beta 104 0.01 0.021 ( 78 / 78) AN1 0.023 ( 26 / 26) 0.019 ( 26 / 26) 0 (pCi/n3 ) [ 0.005 - 0.063] (0.9 Ian W) [0.010 - 0.055] [10.005 - 0.048]

Airborne Iodine 1-131 104 0.07 <LLD N/A N/A <LLD 0

( pCi/m3 )

Indicators TLDs Gamma 64 (f) 12.69 ( 64 / 64) TB1 15.36 (4 /4) N/A 0 (mR/Qtr) [ 9.30- 16.20] (0.5kmNNE) [14.04 - 16.20]

Special Interest TLDs Gamma 24 (f) 13.64 (24 /24) TGS 15.16 (4 /4) N/A 0

( mR/Qtr ) [ 10.88 - 16.68] (17.0 1kr SE) [14.04 - 15.61]

Control TLDs Gamma 8 (f3 N/A N/A N/A 13.71 (8 / 8) 0 (mR/Qtr) 11.08 -15.19]

23

TABLE 3.1 Radiological Environmental Monitorine Proaram Summary Name of Facility: River Bend Station Docket No: 50-458 Location of Facility: West Feliciana Parish. Louisiana Reporting Period: January - December 2005 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 l _ Range ] Results e Mean (F) c

. . _ Location d I Range l Surface Water H-3 10 3000 <LLD N/A N/A <LLD 0 (pCi/i)

Ganmna 10 <LLD Mn-54 15 <LLD N/A N/A <LLD 0 Co-58 15 <LLD N/A N/A <LLD 0 Fe-59 30 <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 0 24

TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: River Bend Station Docket No: 50458 Location of Facility:-West Feliciana Parish, Louisiana Reporting Period: January - December 2005 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

[Range I l Range Results e Mean (F) c Location

_ __ d IRange ]

Groundwater H-3 4 3000 <LLD N/A N/A <LLD 0 (pCi/1)

Gamma 4 <LLD Mn-54 15 <LLD N/A N/A <LLD 0 Co-58 15 <LLD N/A N/A <LLD 0 Fe-59 30 <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 1-131 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 0 Shoreline Sediment Gamma 1 (pCi/kg) Cs-134 150 <LLD N/A N/A <LLD' 0 Cs-137 180 <LLD N/A N/A <LLD 0 25

TABLE 3.1 Radiological Environmental Monitorine Program Summary Name of Facility: River Bend Station Docket No: 50458 Location of Facility: West Feliciana Parish, Louisiana Reporting Period: January - December 2005 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 l l Range I Results e Mean(F)c Fish Gamma 4 Location d IRange I _

(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 I-131 8 60 <LLD N/A N/A <LLD 0 (pCi/kg)

Ganmna 8 Cs-134 60 <LLD N/A N/A <LLD 0 Cs-137 80 <LLD N/A N/A <LLD 0 Special Sediment Gamma 8 (East & West Creek) Cs-134 150 <LLD N/A N/A N/A 0 (pCi/kg) Cs-137 180 <LLD N/A N/A N/A 0 L _-

26

TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: River Bend Station Docket No: 50-458 Location of Facility: West Feliciana Parish. Louisiana Reporting Period: January - December 2005 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 Range I Results e Mean (F) c Location d f Range I Special Water Gamma 12 (Wastewater Plant Mn-54 15 <LLD N/A N/A N/A 0 Effluent) Fe-59 30 <LLD N/A N/A N/A 0 (pCi/i) Co-58 15 <LLD N/A N/A N/A 0 Co-60 15 <LLD N/A N/A N/A 0 Zn-65 30 <LLD N/A N/A N/A 0 Zr-95 30 <LLD N/A N/A N/A 0 Nb-95 15 <LLD N/A N/A N/A 0 1-131 15 <LLD N/A N/A N/A 0 Cs-134 15 <LLD N/A N/A N/A 0 Cs-137 18 <LLD N/A N/A N/A 0 Ba-140 60 <LLD N/A N/A N/A 0 La-140 15 <LLD N/A N/A N/A 0 a 1-131 = Iodine-131; H-3 = Tritium b LLD = Required lower limit of detection based on RBS Technical Requirements Manual Table 3.12.1-3.

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) direction and distance 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 RBS Technical Requirements Manual Table 3.12.1-3.

g Control location for sediment is upstream surface water sample.

27

Attachment 1 2005 Radiological Monitoring Report Summary of Monitoring Results 28

TABLE OF CONTENTS TABLE 1.1 AIR SAMPLE LOCATION ANI 30 TABLE 1.2 AIR SAMPLE LOCATION API 31 TABLE 1.3 AIR SAMPLE LOCATION AQS2 32 TABLE 1.4 AIR SAMPLE LOCATION AGC 33 TABLE 2.1 THERMOLUMINESCENT DOSIMETERS 34 TABLE 3.1 SURFACE WATER 35 TABLE 4.1 GROUNDWATER 36 TABLE 5.1 SHORELINE SEDIMENT 37 TABLE 6.1 FOOD PRODUCTS 37 TABLE 7.1 FISH AND INVERTEBRATES 38 TABLE 8.1 SEDIMENTS (SPECIAL) 39 TABLE 9.1 WASTEWATER PLANT EFFLUENT (SPECIAL) 40 TABLE 10.1 INTERLABORATORY COMPARISON RESULTS 41 29

Table 1.1 Sample Type: Air Particulate and Charcoal Cartridge - Indicator Location ANI Analysis: Gross3Beta and Iodine Units: pci/rn LLD (pCi/m 3) 0.07 0.01 LAB ID .

START DATE END DATE 1-131 GROSS BETA 20050006 12/20/2004 1/5/2005 < 0.007 0.017 +/-0.001 20050050 1/5/2005 1/17/2005 < 0.006 0.018 +/-0.001 20050088 1/17/2005 1/31/2005 < 0.008 0.020 +/-0.001 20050118 1/31/2005 2/14/2005 < 0.007 0.018 +/-0.001 20050177 2/14/2005 2/28/2005 < 0.008 0.025 +/-0.001 20050229 2/28/2005 3/14/2005 < 0.007 0.018 +/-0.001 20050305 3/14/2005 3/28/2005 < 0.009 0.014 +/-0.001 20050367 3/28/2005 4/11/2005 < 0.009 0.016 +/-0.001 20050411 4/11/2005 4/25/2005 < 0.007 0.019 +/-0.001 20050444 4/25/2005 5/10/2005 < 0.007 0.019 +/-0.001 20050484 5/10/2005 5/23/2005 < 0.007 0.021 +/-0.001 20050542 5/23/2005 6/6/2005 < 0.008 0.016 +/-0.001 20050612 6/6/2005 6/20/2005 < 0.007 0.013 +/-0.001 20050666 6/20/2005 7/5/2005 < 0.012 0.025 +/-0.002 20050729 7/7/2005 7/18/2005 < 0.008 0.010 +/-0.001 20050784 7/18/2005 8/1/2005 < 0.008 0.013 +/-0.001 20050837 8/1/2005 8/15/2005 < 0.007 0.018 +/-0.001 20050897 8/15/2005 8/31/2005 < 0.009 0.015 +/-0.001 20050940 8/31/2005 9/12/2005 < 0.010 0.0522+/-0.002 20050988 9/12/2005 9/26/2005 < 0.006 0.0233+/-0.001 20051090 9/26/2005 10/10/2005 < 0.009 0.0555+/-0.002 20051163 10/10/2005 10/24/2005 < 0.008 0.031I+/-0.001 20051240 10/24/2005 11/7/2005 < 0.007 0.027 7+/-0.001 20051273 11/7/2005 11/21/2005 < 0.007 0.026S+/-0.002 20051310 11/21/2005 12/5/2005 < 0.006 0.031I+/-0.001 20051362 12/5/2005 12/19/2005 < 0.008 0.0377+/-0.002 Average: 0.023 Maximum: 0.055 Minimum: 0.010 30

Table 1.2 Sample Type: Air Particulate and Charcoal Cartridge - Indicator Location API Analysis: Gross Beta and Iodine Units: pCi/M 3 3

LLD (pCImM ) 0.07 0.01 LAB ID START DATE END DATE 1-131 GROSS BETA 20050005 12/20/2004 1/5/2005 < 0.007 0.015 +/-0.001 20050049 1/5/2005 1/17/2005 < 0.009 0.016 +/-0.001 20050087 1/17/2005 1/31/2005 < 0.009 0.018 +/-0.001 20050117 1/31/2005 2/14/2005 < 0.009 0.015 +/-0.001 20050176 2/14/2005 2/28/2005 < 0.009 0.021 +/-0.001 20050228 2/28/2005 3/14/2005 < 0.010 0.013 +/-0.001 20050304 3/14/2005 3/28/2005 < 0.010 0.013 +/-0.001 20050366 3/28/2005 4/11/2005 < 0.008 0.015 +/-0.001 20050410 4/11/2005 4/25/2005 < 0.009 0.019 +/-0.001 20050443 4/25/2005 5/10/2005 < 0.008 0.023 +/-0.001 20050483 5/10/2005 5/23/2005 < 0.007 0.022 +/-0.001 20050541 5/23/2005 6/6/2005 < 0.007 0.015 +/-0.001 20050611 6/6/2005 6/20/2005 < 0.008 0.012 +/-0.001 20050665 6/20/2005 7/5/2005 < 0.008 0.016 +/-0.001 20050728 7/5/2005 7/18/2005 < 0.006 0.005 +/-0.001 20050783 7/18/2005 8/1/2005 < 0.008 0.014 +/-0.001 20050836 8/1/2005 8/15/2005 < 0.009 0.018 +/-0.001 20050896 8/15/2005 8/31/2005 < 0.008 0.013 +/-0.001 20050939 8/31/2005 9/12/2005 < 0.007 0.042 +/-0.002 20050987 9/12/2005 9/26/2005 < 0.007 0.022 +/-0.001 20051089 9/26/2005 10/10/2005 < 0.006 0.026 +/-0.001 20051162 10/10/2005 10/24/2005 < 0.007 0.031 +/-0.001 20051239 10/24/2005 11/7/2005 < 0.007 0.024 +/-0.002 20051272 11/7/2005 11/21/2005 < 0.007 0.021 +/-0.001 20051309 11/21/2005 12/5/2005 < 0.008 0.028 +/-0.001 20051361 12/5/2005 12/19/2005 < 0.007 0.030 +/-0.001 Average: 0.019 Maximum: 0.042 Minimum: 0.005 31

Table 1.3 Sample Type: Air Particulate and Charcoal Cartridge - Indicator Location AQS2 Analysis: Gross Beta and Iodine Units: pCi/M 3 LLD (pCI/m3) 0.07 0.01 LAB ID START DATE END DATE 1-131 GROSS BETA 20050007 12/20/2004 1/5/2005 < 0.006 0.019 +/-0.001 20050051 1/5/2005 1/17/2005 < 0.008 0.019 +/-0.001 20050089 1/17/2005 1/31/2005 < 0.007 0.021 +/-0.001 20050119 1/31/2005 2/14/2005 < 0.008 0.018 +/-0.001 20050178 2/14/2005 2/28/2005 < 0.009 0.023 +/-0.001 20050230 2/28/2005 3/14/2005 < 0.010 0.018 +/-0.001 20050306 3/14/2005 3/28/2005 < 0.008 0.016 +/-0.001 20050368 3/28/2005 4/11/2005 < 0.009 0.017 +/-0.001 20050412 4/11/2005 4/25/2005 < 0.006 0.017 +/-0.001 20050445 4/25/2005 5/10/2005 < 0.007 0.022 +/-0.001 20050485 5/10/2005 5/23/2005 < 0.008 0.022 +/-0.001 20050543 5/23/2005 6/6/2005 < 0.007 0.018 +/-0.001 20050613 6/6/2005 6/20/2005 < 0.007 0.015 +/-0.001 20050667 6/20/2005 7/5/2005 < 0.007 0.024 +/-0.001 20050730 7/5/2005 7/18/2005 < 0.007 0.012 +/-0.001 20050785 7/18/2005 8/1/2005 < 0.008 0.014 +/-0.001 20050838 8/1/2005 8/15/2005 < 0.009 0.018 +/-0.001 20050898 8/15/2005 8/31/2005 < 0.007 0.013 +/-0.001 20050941 8/31/2005 9/12/2005 < 0.009 0.033 +/-0.002 20050989 9/12/2005 9/26/2005 < 0.008 0.020 +/-0.001 20051091 9/26/2005 10/10/2005 < 0.009 0.063 +/-0.002 20051164 10/10/2005 10/24/2005 < 0.008 0.027 +/-0.001 20051241 10/24/2005 11/7/2005 < 0.009 0.022 +/-0.001 20051274 11/7/2005 11/21/2005 < 0.009 0.020 +/-0.001 20051311 11/21/2005 12/5/2005 < 0.008 0.030 +/-0.002 20051363 1 t!-, LvvJ 1 'vIsI)flA' 12/19/2005 < 0.010 0.029 +/-0.002 Average: 0.022 Maximum: 0.063 Minimum: 0.012 32

Table 1.4 Sample Type: Air Particulate and Charcoal Cartridae - Control Location AGC Analysis: Gross Beta and Iodine Units: pCi/M 3 LLD (pCiIm3 ) 0.07 0.01 LAB ID START DATE END DATE 1-131 GROSS BETA 20050008 12/20/2004 115/2005 < 0.007 0.017 +/-0.001 20050052 1/5/2005 1/17/2005 < 0.008 0.021 +/-0.001 20050090 1/17/2005 1/31/2005 < 0.007 0.024 +/-0.001 20050120 1/31/2005 2/14/2005 < 0.006 0.017 +/-0.001 20050179 2/14/2005 2/28/2005 < 0.008 0.005 +/-0.001 20050231 2/28/2005 3/14/2005 < 0.008 0.015 +/-0.001 20050307 3/14/2005 3/28/2005 < 0.008 0.015 +/- 0.001 20050369 3/28/2005 4/11/2005 < 0.008 0.015 +/-0.001 20050413 4/11/2005 4/25/2005 < 0.008 0.015 +/-0.001 20050446 4/25/2005 5/10/2005 < 0.007 0.020 +/- 0.001 20050486 5/10/2005 5/23/2005 < 0.010 0.020 +/- 0.001 20050544 5/23/2005 6/6/2005 < 0.007 0.015 +/-0.001 20050614 6/6/2005 6/20/2005 < 0.008 0.012 +/-0.001 20050668 6/20/2005 7/5/2005 < 0.007 0.018 +/-0.001 20050731 7/5/2005 7/18/2005 < 0.007 0.010 +/-0.001 20050786 7/18/2005 8/1/2005 < 0.007 0.014 +/-0.001 20050839 8/1/2005 8/15/2005 < 0.006 0.017 +/-0.001 20050899 8/15/2005 8/31/2005 < 0.007 0.013 +/-0.001 20050942 8/31/2005 9/12/2005 < 0.006 0.026 +1-0.00 1 20050990 9/12/2005 9/26/2005 < 0.007 0.019 +/-0.001 20051092 9/26/2005 10/10/2005 < 0.008 0.048 +/- 0.002 20051165 10/10/2005 10/24/2005 < 0.006 0.025 +/- 0.001 20051242 10/24/2005 11/7/2005 < 0.007 0.022 +/- 0.001 20051275 11/7/2005 11/21/2005 < 0.007 0.019 +/-0.001 20051312 11/21/2005 12/5/2005 < 0.006 0.023 +/- 0.001 20051364 12/5/2005 12/19/2005 < 0.006 0.029 +/- 0.001 Average: 0.019 Maximum: 0.048 Minimum: 0.005 33

Table 2.1 Sample Type: TIiermoluminescent Dosimeters (TLD)

Analysis: mR Exposure Units: mR/Qtr INDICATORS 1ST QTR 2ND QTR 3RD QTR 4TH QTR MEAN TAI 9.99 9.72 10.96 11.39 10.52 TBI 14.04 15.14 16.20 16.07 15.36 TC1 13.05 14.17 14.92 13.95 14.02 TD1 12.86 14.94 16.20 14.57 14.64 TE1 12.56 13.68 15.41 14.57 14.06 TF1 11.77 12.23 14.82 12.98 12.95 TG1 13.55 14.94 15.71 15.45 14.91 THI 11.08 11.17 12.54 11.92 11.68 TJi 11.97 12.33 14.72 12.45 12.87 TKI 12.76 13.30 14.52 14.48 13.76 TLI 12.26 13.49 15.61 11.22 13.15 TMI 10.68 11.36 13.04 13.95 12.26 TNI 11.18 10.97 10.76 10.95 10.97 TPI 11.37 11.36 13.43 11.75 11.98 TQ1 9.30 9.62 10.17 10.07 9.79 TR1 .

9.89 10.68 10.07 10.16 10.20 MAX 14.04 15.14 16.20 16.07 15.36 AVG 11.77 12.44 13.69 12.87 12.69 MIN 9.30 9.62 10.07 10.07 9.79 SPECIAL INTEREST 1ST QTR 2ND QTR 3RD QTR 4TH QTR MEAN TCS 12.76 16.68 12.35 11.75 13.38 TGS 14.04 15.43 15.61 15.54 15.16 TNS 10.88 11.94 13.73 12.98 12.38 TRS 12.56 13.68 14.62 13.42 13.57 TQSI 13.75 14.36 16.50 14.39 14.75 TQS2 11.77 12.04 14.42 12.19 12.60 MAX 14.04 16.68 16.50 15.54 15.16 AVG 12.63 14.02 14.54 13.38 13.64 MIN 10.88 11.94 12.35 11.75 12.38 CONTROLS 1ST QTR 2ND QTR 3RD QTR 4TH QTR MEAN TAC 14.24 15.04 15.12 15.19 14.90 TEC 11.08 11.75 13.14 14.13 12.52 MAX 14.24 15.04 15.12 15.19 14.90 AVG 12.66 13.39 14.13 14.66 13.71 MIN 11.08 11.75 13.14 14.13 12.52 INDICATOR CONTROL SPECIAL MAX 16.20 15.19 16.68 AVG 12.69 13.71 13.64 MIN 9.30 11.08 10.88 34

Table 3.1 Sample Type: Surface Water Analysis: Gamma Isotopic and Tritium Units: pCi/i LLD (pCi/i) 15 15 30 15 30 15 30 15 15 18 60 15 LAB ID LOCATION DATE MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 20050009 SWD 1/6/2005 < 3.72 < 4.46 < 12.20 < 6.06 < 8.70 < 5.42 < 8.30 < 4.46 < 6.66 < 5.08 < 13.62 < 5.14 20050010 SWU 1/6/2005 < 5.43 < 4.97 < 8.70 < 5.70 < 11.64 < 4.32 < 5.22 < 5.86 < 4.45 < 4.32 < 7.13 < 7.13 20050342 SWIJ 4/6/2005 < 3.43 < 5.36 < 9.12 < 5.80 < 7.80 < 5.59 < 6.65 < 5.54 < 5.16 < 4.40 < 19.49 < 5.51 20050343 SWD 4/6/2005 < 4.66 < 3.07 < 8.81 < 3.06 < 8.84 < 4.94 < 5.58 < 3.92 < 4.67 < 4.97 < 13.10 < 6.07 20050679 SWU 7/7/2005 < 3.27 < 5.58 < 9.45 < 4.38 < 8.91 < 6.02 < 8.47 < 4.77 < 4.54 < 4.69 < 16.01 < 5.31 20050680 SWA 7/7/2005 < 5.59 < 4.13 < 9.17 < 6.87 < 10.32 < 4.97 < 10.76 < 4.28 < 5.31 < 6.07 < 18.27 < 6.45 20051063 SWU 10/5/2005 < 4.41 < 6.32 < 7.46 < 4.47 < 10.19 < 4.15 < 6.10 < 6.71 < 4.83 < 5.12 < 12.48 < 7.84 20051064 SWU DUJP 10/5/2005 < 3.77 < 5.22 < 11.99 < 3.16 < 14.62 < 6.73 < 11.38 < 6.57 < 5.83 < 5.29 < 16.35 < 8.14 20051065 SWD 10/5/2005 < 4.16 < 6.04 < 7.79 < 5.75 < 12.01 < 5.38 < 6.70 < 5.71 < 3.72 < 5.86 < 17.30 < 5.16 20051066 SWD DUP 10/5/2005 < 2.87 < 3.91 < 6.37 < 4.86 < 8.78 < 4.52 < 6.55 < 4.46 < 4.20 < 5.22 < 12.86 < 3.92 LLD (pCi/1) 3000 LAB ID LOCATION DATE TRITUM 20050009 SWD 1/6/2005 < 562.39 20050010 SWU 1/6/2005 < 567.39 20050342 SWU 4/6/2005 < 586.81 20050343 SWD 4/6/2005 < 580.26 20050679 SWU 7/7/2005 < 562.72 20050680 SWD 7/7/2005 < 561.84 20051063 SWU 10/5/2005 < 578.55 20051064 SWU DUP 10/5/2005 < 566.38 20051065 SWD 10/5/2005 < 565.74 20051066 SWD DUP 10/5/2005 < 567.36 35

Table 4.1 Sample Type: Groundwater Analysis: Gamma Isotopic and Tritium Units: pCi/M LLD (pCi/I) 15 1:5 30 15 30 15 30 15 15 18 60 15 LAB ID LOCATION DATE MN-54 Co-.58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 20050551 WU 6/8/2005 < 7.61 < 5.85 < 12.65 < 6.14 < 15.29 < 9.76 < 14.32 < 8.84 < 6.50 < 8.44 < 23.03 < 8.45 20050645 WD 6/29/2005 < 4.95 < 4.09 < 9.28 < 4.66 < 10.14 < 6.71 < 8.25 < 5.08 < 5.10 < 4.48 < 18.59 < 6.22 20051341 WD 12/8/2005 < 8.08 < 5.52 < 8.18 < 4.24 < 6.56 < 7.27 < 12.77 < 6.68 < 6.56 < 4.66 < 22.17 < 7.60 20051342 WJU 12/8/2005 < 7.51 < 5.66 < 11.04 < 6.37 < 12.72 < 8.49 < 9.50 < 7.63 < 6.02 < 7.60 < 26.51 < 7.91 LLD (pCi/1) 3000 LAB ED LOCATION DATE TRITIUM 20050551 WU 6/8/2005 < 569 20050645 WD 6/29/2005 < 560 20051341 WD 12/8/2005 < 588 20051342 WU 12/8/2005 < 588 36

Table 5.1 Sample Type: Shoreline Sediment Analysis: Gamma Isotopic Units: pCi/kg, dry LLD (pCi/kg) 150 180 LAB ID DATE CS-134 CS-137 20050317 4/4/2005 < 25.18 < 25.31 Table 6.1 Sample Type: Food Products Analysis: Gamma Isotopic Units: pCi/kg, wet LLD(pCilkg, wet) 60 60 80 LAB ID L OCATION DATE 1-131 CS-134 CS-137 20050048 GNI 1/17/2005 < 31.13 < 31.44 < 22.51 20050140 GJN1 QC 2/16/2005 < 31.60 < 45.31 < 36.19 20050386 GJN1 4/19/2005 < 48.78 < 59.33 < 46.25 20050471 GKQC 5/17/2005 < 26.88 < 44.22 < 34.80 20050727 GrNI 7/18/2005 < 46.74 < 39.42 < 55.38 20050851 CQC 8/17/2005 < 43.00 < 57.44 < 51.20 20051157 CrNI 10/19/2005 < 44.60 < 59.49 < 35.08 20051265 C3QC 11/15/2005 < 42.31 < 39.72 < 33.50 37

Table 7.1 Sample Type: Fish Analysis: Gamma Isotopic Units: pCi/kg, wet 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 20051332 FU 12/6/2005 < 14.27 < 14.03 < 47.43 < 26.36 < 37.99 < 18.26 < 14.95 20051333 FU DUP 12/6/2005 < 13.96 < 15.52 < 45.21 < 14.90 < 38.44 < 13.65 < 16.54 20051334 FD 12/6/2005 < 17.85 < 18.16 < 42.00 < 21.75 < 44.83 < 14.36 < 10.25 20051335 FD DUP 12/6/2005 < 22.73 < 19.05 < 37.62 < 24.29 < 48.39 < 18.01 < 15.01 38

Table 8.1 Sample Type: Sediments (Special)

Analysis: Gamma Isotopic Units: pCi/kg, dry LLD (pCi/kg) 150 180 LAB ED LOCATION DATE CS-134 CS-137 20050208 EAST CREEK 3/7/2005 < 13.95 < 12.72 20050207 WEST CREEK 3/7/2005 < 13.05 < 13.82 20051444 WEST CREEK 5/10/2005 < 16.48 < 12.62 20051443 EAST CREEK 5/10/2005 < 18.00 < 14.94 20050769 WEST CREEK 7/26/2005 < 14.96 < 19.69 20050768 EAST CREEK 7/26/2005 < 13.09 < 14.69 20051415 WEST CREEK 12/28/2005 < 14.61 < 16.41 20051414 EAST CREEK 12/28/2005 < 14.73 < 14.83 39

Table 9.1 Sample Type: Wastewater Treatment Plant Effluent (Special)

Analysis: Gamma Isotopic Units: pCi/I LLD (pCi/1) 15 15 30 15 30 15 30 15 15 18 60 15 LAB ID DATE MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 20050075 1/27/2005 < 4.20 < 4.93 < 5.46 < 4.39 < 10.50 < 3.92 < 7.36 < 5.31 < 3.03 < 5.55 < 16.91 < 2.87 20050170 2/23/2005 < 5.14 < 2.52 < 7.93 < 6.35 < 9.52 < 4.53 < 8.24 < 4.25 < 5.15 < 4.26 < 7.92 < 7.88 20050318 3/30/2005 < 5.93 < 5.07 < 7.69 < 5.59 < 12.75 < 5.66 < 8.64 < 6.03 < 6.37 < 8.71 < 16.63 < 6.85 20050426 4/28/2005 < 4.73 < 5.06 < 9.53 < 3.80 < 11.73 < 4.61 < 10.66 < 5.76 < 5.62 < 5.55 < 13.55 < 5.01 20050510 5/25/2005 < 6.52 < 4.95 < 6.04 < 5.58 < 13.60 < 7.12 < 8.86 < 5.96 < 5.30 < 6.63 < 20.80 < 8.54 20050644 6/29/2005 < 5.35 < 5.22 < 9.08 < 5.34 < 10.09 < 4.29 < 8.89 < 4.05 < 5.35 < 4.90 < 16.59 < 7.30 20050767 7/27/2005 < 5.34 < 4.51 < 8.75 < 5.13 < 11.09 < 4.79 < 5.31 < 5.11 < 5.07 < 6.49 < 13.64 < 7.03 20050900 8/31/2005 < 4.80 < 4.88 < 8.94 < 6.54 < 11.38 < 3.52 < 9.59 < 5.50 < 5.21 < 6.48 < 16.17 < 7.74 20051014 9/28/2005 < 3.48 < 4.69 < 8.37 < 5.33 < 10.66 < 4.63 < 6.79 < 5.86 < 5.56 < 5.69 < 17.32 < 6.83 20051203 10/26/2005 < 6.51 < 4.94 < 10.20 < 4.73 < 8.05 < 2.80 < 11.03 < 5.53 < 6.93 < 4.13 < 16.73 < 4.80 20051308 11/30/2005 < 6.54 < 4.65 < 4.73 < 2.56 < 8.63 < 6.14 < 9.78 < 8.32 < 4.69 < 5.15 < 22.89 < 7.36 20051413 12/29/2005 < 4.77 < 3.69 < 9.70 < 3.81 < 8.83 < 4.64 < 5.67 < 4.73 < 4.54 < 5.56 < 18.27 < 5.12 40

Table 10.1 Sample Type: Interlaboratory Comparison Analysis: Gross Beta, Iodine-131, Tritium, and Gamma Isotopic Sample Type Analytics # Date Analysis Known RBS Value RBS N- RBS N-(units) valuea DEVb RANGEC Charcoal E4570-125 6/9/2005 1-131 91.7 96.3 0.88 0.386 Cartridge (pClfilter)

Water E4569-125 6/9/2005 BETA 214 232 1.48 0.055 (pCi/liter) E4568-125 6/9/2005 CR-51 330 347 0.89 0.251 MN-54 136 140 0.55 0.217 CO-58 69.7 81.3 2.89 0.678 FE-59 158 165.7 0.84 0.262 CO-60 169 191 2.25 0.384 ZN-65 93.8 100 1.08 0.378 1-131 104 95.7 -1.39 0.170 CS-134 206 213 0.56 0.086 CS-137 101 107 1.09 0.117 CE-141 214 232 1.48 0.055 E4719-125 9/15/2005 H-3 4190 4337 0.61 0.152 Air Filter E4717-125 9/15/2005 BETA 95.8 94.2 -0.29 0.253 (pCilfilter) E4720-125 9/15/2005 CR-51 237 209 -2.05 0.548 MN-54 64.5 65.3 0.21 0.449 CO-58 44.4 43.1 -0.51 0.931 FE-59 42.7 44.7 0.81 0.332 CO-60 117 112 -0.79 0.454 ZN-65 86.6 89.6 0.60 0.498 CS-134 85.7 80.2 -1.12 0.193 CS-137 137 135 -0.29 0.302 CE-141 164 153 -1.16 0.576 Sediment E4718-125 9/15/2005 CR-51 0.455 0.467 0.47 0.091 (pCi/gram) MN-54 0.124 0.155 428a 0.191 CO-58 0.085 0.093 1.63 0.347 FE-59 0.082 0.090 1.76 1.008 CO-60 0.225 0.246 1.59 0.158 ZN-65 0.166 0.187 2.19 0.676 CS-134 0.164 0.183 1.97 0.396 CS-137 0.364 0.418 2.55 0.097 CE-141 0.314 0.355 2.24 0.150 41

Table 10.1 Sample Type: Interlaboratory Comparison Analysis: Gamma Isotopic Sample Type Analytics # Date Analysis Known RBS Value RBS N- RBS N-(units) Valuea DEVb RANGEC Milk E4571-125 619/2005 CR-51 303 254 -2.82 1.111 (pCilliter) MN-54 125 126.0 0.18 0.614 FE-59 63.9 74.7 2.92 0.647 CO-60 145 132.0 -1.51 0.407 ZN-65 155.0 158.0 0.37 0.495 1-131 86.9 83.3 -0.71 0.068 CS-134 95.0 89.0 -1.09 0.373 CS-137 189 184 -0.49 0.281 CE-i41 92.4 95.7 0.61 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; i2.00 is 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; +2.000 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.

Exceptions:

There was one result outside the control limits for accuracy in the 2005 Interlaboratory Comparison program participation studies. This result was in a gamma isotopic analysis of a sediment/soil sample. The result outside the control limits for accuracy was in the analysis of the nuclide Mn-54 in Analytics sample number E4718-125 of 9/15/2005.

RBS normalized-deviation for the analysis was +4.28 with control limits of +3.00. This high bias result is considered conservative and is considered as having no impact on past results of the program. Mn-54 results were all within control limits in other program samples for the year 2005; with normalized-deviations of 0.55 in a water sample analysis; 0.21 in an air filter sample analysis; and 0.18 in a milk sample analysis.

Review of trending information of Mn-54 results in sediment/soil samples indicates a steady high bias, with only one result for Mn-54 out of the control limits occuring in 1998. Reanalysis of the 2005 soil sample produced results very similar to the original averaged result.

Analytics was contacted concerning this high bias result of Mn-54. The only explanation received, and I quote was, "the effect of coincidence summing where the 834 keV gamma efficiency (of Mn-54) is lower due to coincidence summing of the 898 and 1836 keV gammas from Y-88. This would give a lower efficiency and therefore a higher value for Mn-54."

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