Text

Vepco,North Anna Power Station,Radiological Environ Monitoring Program for 1983
	ML20100K147
Person / Time
Site:	North Anna
Issue date:	12/31/1983
From:	Harrell E, Oconnell J, Stafford A; TELEDYNE ISOTOPES, VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	;
References
	IWL-8343-486, NUDOCS 8504120230
	Download: ML20100K147 (300)
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l ANNUAL ENVIRC'! MENTAL OPERATING REPORT RADIOLOGICAL REPORT NORTH ANNA POWER STATION JAN. 1, 1983 - DEC. 31, 1983 7y V

PREPARED BY: ~

[ Joseph G. O'Connell Ass't. H.P. Supervisor APPROVED BY:

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TTELEDYNE ISOTOPES VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION RADIOLOGICAL ENVIRO'NMENTAL MONITORING PROGRAM FOR 1983 Prepared by TELEDYNE ISOTOPES

#' 50 VAN BUREN AVENUE WESTWOOD, NEW JERSEY 07675

1PTELEDYNE ISOTOPES TABLE OF CONTENTS

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~THE RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM PAGE LIST Of TABLES ii LIST'0F FIGURES ii INTRODUCTION 1 DESCRIPTION OF THE PROGRAM 2 ABSTRACTS OF ANALYTICAL PROCEDURES 11 ABSTRACTS OF RADI0 ASSAY PROCEDURES 14 QUALITY CONTROL OF ANALYSES 18 RADIATION DOSES FROM NATURAL AND ARTIFICIAL SOURCES 19 REFERENCES 20

SUMMARY

AND DISCUSSION OF QUARTERLY RESULTS FIRST QUARTER 1983 1A SECOND QUARTER 1983 18 THIRD QUARTER 1983 1C FOURTH QUARTER 1983 1D APPENDIX A FIRST QUARTER A-1 Complete Data by Sample Type, Station and Collection Dates APPENDIX B SECOND QUARTER B-1 Complete Data by Sample Type, Station and Collection Dates APPENDIX C THIRD QUARTER Complete Data by Sample Type, Station and Collection Dates C-1 APPENDIX D FOURTH QUARTER Complete Data by Sample Type, Station and Collection Dates 0-1 O

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LIST OF TABLES PAGE TABLE 1 - Operational Radiological Environmental Monitoring Program 5 TABLE 2 Sampling Station Identification and Location 8 TABLE 3 Lower Limits of Detection (LLD) 15 TABLE-8 Radiation Dose from Natural'and Artificial Sources 19 4

i LIST OF FIGURES

. FIGURE 1 Map of Sampling Stations in Vicinity of NAPS 9 FIGURE 2 ' Map of the Environnental Sampling Stations 10 3

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INTRODUCTION l The North Anna' Power Station consists of two. pressurized water reactors of 7 megawatts located in~ Mineral, Virginia. Monitoring of the environment began

pr r to operationiin January of 1977 and has continued to the present. -Unit gan operation in' April 1978; Unit Two reached full operation in One Decemb 1980. __

N L. Outlined is document is the description of the radiological environ- -

mental monitoring program conducted by Virginia Electric and Power Company for the North Anna Power Station, and a summary of the data generated to satisfy the monitoring requirements. This program is based on the technical specifications requiring the collection and analysis of various sample media to provide information on the type and quantity.of radioactivity in certain indicator organisms or critical pathways.

Virginia Electric and Power Company is responsible for the collection of the ' samples required for the program and Teledyne Isotopes is responsible for the analysis of each sample and submission of the reports of analyses.

-Quarterly summaries of the data reported for each sample type is appended to this document.

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These'quarterlyLdata summaries include a sunenary of the radioactivities

. reported for each sample type and pathway and a tabulation of the mean,.

range, and number of-detections measured among the : total number of ~ samples for i

Leach sample type and radionuclide. From the data summaries, a radiological

~ environmental- monitoring report as specified in Regulatory Guide 4.8 (Ref.1) -

has been prepared and used as, the basis for evaluating the radiation exposures resulting from the North Anna Power Station. operations.

7 The radiological environmental monitoring program-(REMP) specifications are described in Appendix B to the Operating License (Ref 7) and_ the required ;

analyses and specifications are listed.in Table 1. -

Theloverall-objectives (Ref. 7) of the operational radiological environ-

- mental. monitoring program are to identify changes of radioactivity in the

~ vicinity of' the North Anna Power Station and to provide information on the '

types and l quantity of radiation in certain critical pathways and indicator organisms as'a basis for' evaluating radiation exposures to the population from thel NAPS op'erations.

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TM ISOTOPES DESCRIPTION OF THE OPERATIONAL PROGRAM 4

'liiE RADIOLOGICAL ENVIRONMENTAL PROGRAM The description of the operational radiological environmental anal-ysis program is presented in this section. Personnel of VEPCO collect the samples specified in Table 1 and ship them to Teledyne Isotopes for the analytical phase of the program. Interim data reports are submitted by Teledyne Isotopes as the analyses are completed, normally within 33 days of the date of receipt of samples (Ref. 9). Summary reports are is-sued quarterly by Teledyne Isotopes, usually within 45 days after the end of the quarter. The quarterly reports will be appended to this report and will contain (1) , computer compilations of the analytical data from the interim data reports, (2) summaries of the environmental radiological analysis for each media listing the mean and range of detected radio-nuclides and the ratio of detected radionuclides to total measurements, (3) data interpretations for each media and analysis based on the summary table prepared in accordance with Regulatory Guide 4.8 (Ref.1).

The radiological environmental program outlined in Table 1 contains the technical specification requirements for the North Anna Power Station (Ref.7).

Sampling station identifications and relative positions to the ef-fluent release point are listed in Table 2 (Ref. 8) and shown on Figure w I and Figure 2 (maps indicating the environmental sampling stations).

The operational environmental radiological program requires measure-ments on the following media.

AIRBORNE PATHWAY Airborne Particulates -

Particulate filters are collected weekly from air sampling stations 1, 2, 3, 4, 5, 5A, 6, 7, 21, 22, 23, 24 and analyzed for gross beta activity. Quarterly composites of these particulate air samples are analyzed for Sr-89, Sr-90 (second quarter only), and gamma emitting nuclides by high resolution Ge(Li) gamma spectrometry.

Air sampling stations are located on Figures 1 and 2 and listed in Table 1. Lapse time recorders are used to calculate actual air volumes. The control station is Station 24.

Radioiodine Charcoal cartridges are collected from sampling stations 1, 2, 3, 4, 5, 5A, 6, 7, 21, 22, 23, 24 weekly. The cartridges are anal-yzed for radioiodine by distillation and beta counting. Charcoal cartridge sampling locations are shown on Figures 1 and 2. Station 24 is the control station.

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.. Groundwater Water samples are collected quarterly from the Environmental Laboratory Well 1A and analyzed for tritium and for gamma emitting nuclides by high resolution Ge(Li) gamma spectrometry. The second quarter sample is also analyzed for Sr-89, Sr-90.

AQUATIC PATHWAY Sediment / Silt Sediment and silt samples are collected semiannually from Stations 8, 9, and 11. They are analyzed for gamma emitting nuclides by high resolution Ge(Li) gamma spectrometry. The samples are analyzed an-

- nually. for Sr-89 and Sr-90. Station 9 is the control station.

Shoreline Soil A shoreline soil sample is collected semiannually from Station 9 and analyzed for gamma isotopes by a high resolution Ge(Li) spectrometer. A sample is analyzed annually for Sr-89 and Sr-90.

-O 1"cssTton e^T""^v Milk Milk samples are collected monthly from locations 12, 13, 14A, and analyzed for I-131 by chemical separation. Gamma isotopic emitters are analyzed by high resolution Ge(Li) ganna spectrometry. Quarterly composites of milk samples are analyzed for Sr-89, Sr-90. Milk sampling locations are listed in Table 1 and shown in Figures 1 and 2.

Fish Fish are collected annually near the beginning of the season from two locations and analyzed for gamma emitting nuclides by high resolution Ge(Li) gamma spectrometry. Fish sampling sites are at locations 8 and 9 on Figure 1.

Terrestrial Vegetation Samples of green leafy vegetation (cultivated or weeds) are collectedannually during the harvest from two locations, Stations 21 and 23. These samples are analyzed for gamma emitting nuclides by

. high resolution Ge(Li) gamma spectrometry.

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N WOTOPES Soil Soil samples are collected from locations near the airborne stations every three years and analyzed for gamma emitting nuclides by high resolution Ge(Li) gamma spectrometry. .The stations are 1, 3, 4,.5, 6, 7, 21, 22,.23, and 24. . Stations 1, 21, 22, 23, and 24 are also analyzed for Sr-89, Sr-90. The control station is Station 24.

Precipitation Rain water is collected monthly from Station 1 and analyzed for gross beta activity. The deposition of matter in nanoCuries per

. square meter is reported from the gross beta activity and the amount of rainfall. A semiannual composite is prepared and analyzed for tritium ~ and gama emitting- nuclides.

~ DIRECT RADIATION TLD Environmental direct radiation levels are monitored by thermoluminescent dosimeters (TLD) using a multi-area, phosphor

' teflon CaSOg:Dy. dosimeter. Dosimeters are placed at each location

. j and exchanges are made quarterly. TLDs are located at stations 1, 2,-

1 V 3,' 4, S, SA, 6, 7, 21, 22, 23, 24 -(See Table 1 and Figures 1 and 2) .

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Station 24 is the control station.

WATERBORNE PATHWAY ,

River Water A sample of river water-is. collected' quarterly at Station 11, downstream on the North Anna River. It is analyzed for tritium and -

gama. emitting nuclides at collection. The second quarter sample is analyzed for Sr-89, Sr-90.

Surface Water-Surface water samples are collected monthly from Station 8 (Discharge) and Station 9 (Reservoir) and analyzed for iodine-131 and gamma isotopes. A quarterly composite'is prepared and analyzed for tritium. The second quarter composite is analyzed for Sr-89, Sr-90~in addition to tritium. The control station is Station 9.

The State of Virginia collects two samples of surface water -

- monthly which are analyzed for gross beta activity and gamma emit-ting nuclides. At least once per quarter the samples are analyzed for tritium. The.results can be compared with the results of the samples collected by the North Anna Power Station.

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' TABLE 1

' NORDI ANNA POWER STATION OPERATIONAL RADIOLOGICAL ENVIRONENTAL M)NI1DRING PROGRAM .

EXPOSURE PATHNAY SAWLE IDCATION AND/OR SAW LING AND' . TYPE AND FREQUENCY AND/OR SAMLE MAP NtBSER DESIGNATION- COLLECTION FREQUENT.Y. OF ANALYSIS AIRBORNE Particulates Site or site boundary: 1,2,4,5A, Continuous sampler Weekly gross beta on' 6,21,22,23 (2/3 running time each filter, quarterly Comunities: 3, 5, 7 cycle), changes gamma isotopic on each Control: 24 weekly location composite, Sr-89-90 on second.

Radioiodine 1,2,3,4,5,5A,6,7. 21,22,23,24 - quarter composite, I-131 on radiolodine weekly.

Soil 1,3,4,5,6,7,21,22,23,24- Once per 3 years Gamma' isotopic on each Sr-89-90 on 1,21,22, 23,24 (on collection)

Precipitation Site: 01 Monthly Gross beta; semi-annual WP Composite 11-3 and gamma isotopic DIRECT 1,2,3,4,5,5A,6,7,21,22,23,34 Quarterly Gamma dose quarterly EATERBORNE Reservoir: 9 g Monthly cm=== Isotopic, radio-Discharge: 8 'iodineYH-3 quarterly composite, + Sr-89-90 second quarter composite North Anna River:d ll WR Quarterly Gamma isotopic H-3 on Ground (well): lA WG collection, + Sr-89-90 second quarter sample

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NORDI ANNA POWER STATION.

OPERATIONAL RADIOLOGICAL ENVIRONMINTAL MONITORING PROGRAM EXPOSURE PATHWAY. SAMLE IDCATION AND/OR SAMPLING AND- TYPE AND FREQUENCY AND/OR SA W LE MAP NlSSER DESIGNATION COLLECTION FREQUENCY OF ANALYSIS-AQUATIC Reservoir: 9. Semiannually Gamma isotopic on Discharge: 8 Sediment / Silt. collection Sr-89-90 North Anna River: 11 annually Shoreline Vicinity of: 9 INGESTION Milk Nearest Dairies: 12, 13, 14A Monthlya Radiolodine a ,e, Gamma isotopic monthly, Sr--

89-90 qtrly on composite

- Non-dairy activityb Calculated dose. Radiolodine b ,e, c. - ,

dependentb isotopicb Sr-89-90b Fish Reservoir: 9 Annually, near Games isotopic (Bass, or sunfish Discharge: 8 beginning of season or crappie and catfish Green Leafy 21, 23 Annually during Gausna isotopic on vegetation, harveste collection cultivated or treeds. Naturally occurring 1

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TABLE 1 NORTII ANNA POWER STATION OPERATIONAL RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM EXPOSURE PATiiWAY SAMPLE LOCATION AND/OR SAMPLING AND TYPE AND FREQUENCY AND/OR SAMPLE MAP NUMBER DESIGNATION COLLELTION FREQUENCY OF ANALYSIS

a. Once each month 1 and 2 mrem thyroid isodose lines will be calculated using the previous month's release data based on the cow-milk-child pathway. Should a dairy be located within the 1 mrem isodose line the sampling and analysis frequency for radioiodine will be modified to semimonthly for the month following the month for which the calculation was made. A similar sampling program will be for the 2 mrem isodose line except on a weekly frequency.

b. Monthly updates of the current year's annual accumulated calculated thyroid 15 mrem iosdose lines based on the goat-milk-child and the cow-milk-child pathway will be done. Should the isodose line extend beyond the site boundary, a survey to locate goats or cows within the isodose line will be carried out within 30 days. Should goats or cows be observed, efforts to obtain samples from the owners of the animals will be put forth. If samples are obtainable, a sampling program similar to "a" above will be initiated. If samples are unobtain-able, the annual report will document such and include the calculated doses.

c. Monthly updates of an annual 15 mrem isodose line (using release data and maximum organ dose in each of the 16 sectors) based on the grass-cattle-beef-man pathway will be done. Should the isodose line extend beyond the site boundary, sampling and analyses will be modified to monthly for the current year.

d. Samples will be taken from the Environmental Laboratory well.

e. Radioiodine analyses will be done by chemical separation.

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TABLE 2

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SAMPLING STATION IDENTIFICATION AND RELATIVE POSITION TO EFFLUENT RELEASE POINT ~

STATION DISTANCE DEGREES AND

. NUMBER LOCATION MILES COMPASS DIRECTION REMARKS 01 On Site 0.2 42 NE-02 Fredericks Hall ~ 5.3 225 SSW 03 Mineral" '7.1 243 WSW 04 Wares Crossroads 5.1 287 WNW 05 Good Hope Church 4.2 20 NNE 05A Sturgeon's' Creek 3.2 11 SSE 06 Levy -4.7 115 ESE 07 Bumpass 7.3 167 SSE 08 Discharge Lagoons 1.1 148 SSE 09 Lake Anna, upstream. 2.2 320 NW CONTROL j 11 North' Anna River, downstream 5.8 128 SSE 12 Holladay Dairy 8.3 310 NW 13 Fredericks Hall 5.6 205 SSW 14 Trice Dairy .3. 2 202 SSW 14A Colvin Dairy 8.0 310 NW 21 Route 685 ~ 1.0 301 WNW 22 Route 700 3.0 242 WSW 23 Aspen Hills 0.9 158 SSE 24 Orange 22.0 325 NW ' CONTROL o

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ISOTOPES b ABSTRACTS OF THE ANALYTICAL PROCEDURES The following are abstrnets of the radionuclide separation, puri-fication, and measurement techniques used by Teledyne Isotopes. These tech-niques have been developed to meet the detection sensitivities (Table 3) and associated accuracies required by the nuclear industry in compliance with technical specifications.

Air Particulates-Gross Beta Transfer filter to a 2-inch diameter planchet and assay in a Beck--

man Sharp Wide Beta II automatic alpha / beta counter.

Gamma Isotopic Analysis Composite station filters are combined quarterly and radioassayed

- on a high resolution, high efficiency Ge(Li) detector.

Radiogas Iodine-131 (mj Two procedures are used for the analysis of charcoal cartridges

-for-iodine-131.

' METHOD 1. If the charcoal used is NCTT impregnated with elemental iodine, iodide carrier is added and leached with NaOH. The stable iodide and I-131 is then stripped and extracted as iodine and precipitated as PdI2' inounted on a nylon planchet, and assayed by low level beta counting.

METHOD 2. If the charcoal used in the filters is impregnated with iodine, the chemical yield of the distillation procedure cannot be determined and the samples are analyzed by high resolution ganna spectrometry (Ge(Li)) by integration of the I-131 photopeak.

Direct Radiation (TLD)

CaSO4

Dy thermoluminescent dosimeter packets consisting of the four-area RadiGuard_ badge are placed at monitoring locations. At the end of the monitoring period, the dosimeters are returned to Teledyne Isotopes for readout. Results are reported in milliroentgen for the collection period or mR/ collection time period.

Milk, Iodine-131 Stable iodide carrier is added to an aliquot of milk and the io-(Q s/ dide and I-131 is removed by anion exchange resin. The iodine is stripped 11 l

T TELEDfNE ISOTOPES (3 with Na0C1 solution, reduced with hydroxylamine hydrochloride, and V' extracted into CHC1 as free iodine (I2 ). It is then back-extracted into 3

NaHS0 solution and precipitated as PdI2 . The precipitate is mounted on a nylon3planchet for low level beta counting.

Strontium-89/ Strontium-90 To 1 liter of milk add strontium carrier and TCA solution. Stir solution and allow precipitation to settle overnight. Filter, wash, and dis-card precipitate. To the filtrate add oxalic acid, followed by NH 0H until 4

the solution is alkaline in order to precipitate calcium and strontium oxalates.

This precipitate is filtered and ashed, and the ash is dissolved in nitric acid. Strontium is purified by repeated precipitations as nitrate in concen-trated HNO3 . Barium and iron scavenges are performed and stable yttrium carrier added , followed by a S to 7 day period for Y-90 ingrowth. The yttrium is precipitated as the hydroxide, redissolved and precipitated as the oxalate, and then mounted on a nylon planchet and counted in a low level beta counter. The strontium is precipitated from the sample as SrC03 ,

mounted on a nylon planchet and counted in a low level beta counter for Sr-89 and/or the Y-90 ingrowth.

Gamma Isotopic Analysis Transfer 1 liter of milk to a 1-liter wrap-around Marinelli count-ing beaker and radioassay on a high resolution Ge(Li) detector.

(h v/ Well Water Tritium An aliquot of sample is converted to hydrogen gas by reduction in a hot zine furnace, mixed with methane counting gas and radioassayed utilizing an internal low level gas proportional counter. Very low levels of activity can be detected due to the sophistication of the counting equipment, the electronics, and the shielding.

Gamma Isotopic Analysis One liter of sample is transferred to a-1-liter Marinelli wrap-around counting beaker and counted on a Ge(Li) detector.

Surface Water Tritium An aliquot of sample is converted to hydrogen by gas reduction in a hot zine furnace, mixed with methane counting gas and is radioassayed util-izing an internal low level gas proportional counter. Very low levels of ac-tivity can be detected due to the sophistication of the counting equipment, the electronics, and the shielding.

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Gasuna -Isotopic Analysis -

. One liter of sample _is transferred to a 1-liter Marinelli wrap-around counting beaker and counted on a Ge(Li) detector.

Fish-Gamma Isotopic Analysis-Remove the edible portions by filleting the fish and homogenizing in _a high ' speed blender or dice into small pieces. Transfer the blended or

- diced -portions. to a 1300 mi bottle, record the weight, and radioassay on a high resolution Ge(Li) detector.

Vegetation / Terrestrial (Green Leafy)

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Gamma Isotopic Analysis Completely, fill a 300 m1 bottle with a green leafy vegetation.

Record . sample weight and radioassay on a Ge(Li) detector. Calculate the ob--

served gamma emitting nuclides in pCi/gm wet.

. Soil and Sediment / Silt.

Gamma Isotopic Analysis Fill a 300 mi bottle with soil, record the sample weight, and ra'dioassay._on a high resolution Ge(Li) detector.

Strontium-89/Stronium-90

~ Weigh an aliquot' of dry soil or sediment and transfer to a' l-liter

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beaker. Add strontium carrier and concentrated HNO 3; t. hen heat the sample for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> to leach strontium from the soil. Filter the resulting solution, wash the precipitation with hot water, and discard the residue. Evaporate the filtrate to a few milliliters and add Nil4 0ll'until alkaline. Add' sat-CO3 solution to precipitate SrC0 ,3and centrifuge and discard-urated Na 2 supernate. Dissolve precipitate in HNO3 and evaporate to almost dryness.

. Proceed.with Sr-89, Sr-90 purification procedures using fuming nitric acid, s an Fe(OH)3 scavenge, etc.

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T TELEDVNE ISMOPES es ABSTRACTS OF THE RADI0 ASSAY PROCEDURES The lower limits of detection for radionuclides by.the radioassay procedures are listed in Table 3.

Gross Beta Evaporated or solid phase aliquots are transferred to a 2-inch diameter stainless steel planchet and counted in a low level gas flow thin window Geiger counter.

Ge(Li) Gamma Spectrometry Based upon the specific media to be analyzed, samples are counted in 1-liter wrap-around Marinelli type containers, 300 m1 bottles or 2-inch filter paper source geometries on 55 cc Ge(L1) detectors coupled to multi-channel spectrometers. All resultant spectra are maintained on magnetic tape for computer analysis and for future reference.

' Strontium-89/ Strontium-90 After decomposition and radioche ical separation and purfication, mounts of Sr-89 and Y-90 are counted in a 1, a level gas flow thin window Geiger counter. Nuclide purity is establishad by counting over at least one y half-life for Y-90 and by multiple counts for Sr-89.

Tritium An aliquot of distilled sample is added to scintillation cocktail and counted in a liquid scintillation spectrometer, or converted to the gaseous phase and counted in an internal gas proportional counter depending on sensitivity requirements. .

Iodine-131 Mounts are counted in a low level gas flow thin window Geiger coun-ter. Nuclide purity is established by counting over at least one half-life.

Positive detections of I-131 are also verified by counting on a beta-gamma coincidence spectrometer.

Rare Gases Purified fractions are assayed in internal gas proportional counters.

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M TELEDVE ISOTOPES TABLE 3 LOWER LIMITS OF DETECTION

- - LLD 6 Sampled Volume Sample-Analysis Reporting l' nits Required

~ 1. Airborne Particulate 3

2.5 x 10,33 PCi/m 33 Gross Alpha 125 m Gross Beta 7.6 r. 10 pCi/m Ge(Li) Gamma Isotopic See Table 3.2 1625 m 3

2. Airborne Iodine

- 2.4 x 10 -2 pCi/m 3 3

Charcoal-Cargridge I-131 125 m

3. Direct Radiation TLD Environmental Badge 2 mR 1 2 mR

4. -Milk

-Sr-90 0.8 pCi/1 4 liters I-131 by Chemical Separation 0.5 pCi/1 Ge(Li) Gamma Isotopic . (Cs-137) See Table 3.2 Cs-137 Chemical Separation' 3 pCi/1 p 5. Well Water d Gross Alpha Gross Beta 0.5 pCi/1 0.5 pCi/1 2 liters Tritium (gas count)_ 100 pCi/1 Ge(Li) Gamma Isotopic See Table 3.2

6. Surface Water Gross Beta 0.5 pCi/1 2 liters Tritium (gas count) . 100 pCi/1 Ge(Li) Gamma Isotopic See Table 3.2

7. Fish: Flesh Gross Beta plue K-40 0.1 pCi/gm wet (2) 1 Kg Ge(Li) Gamma Isotopic See Table 3.2

.Sr-89 *0.8 pCi/gm Sr-90 *0.5 pCi/gm

8. Vegetation (corn, leaf, food,

. terrestrial, aquatic)

Ge(Li)- Gamma Isotopic See Table 3.2 (2) 1 Kg Sr-89 0.8 pCi/gm Sr-90 0.5 pCi/gm

9. Soil Ge(Li) Gamma Isotopic See Table 3.2 1 Kg O

10. Silt-Ge(Li) Gamma Isotopic -% ? ale 3.2 (2) 1 Kg I

Sr-89 0/ 'i/gm l Sr-90 U. . ; 2 /gm l 15 J

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TABLE 3.2

~ LOWER LIMITS OF DETECTION BY HIGH RESOLITTION Ge(Li) GAMA SPECTROSCOPY ENVIRONMENTAL SAMPLES Water (1 liter) Soil-6 Vegetation Filters Nuclide pCi/1 (400 gm) pCi/gm pCi/ total filter Be 8E+01 2E-01 2E+01 K- 40 2E+02 SE-01 5E+01 Cr 8E+01 2E-01 8E+01

.Mn-54 8 2E-02 .2 Co-58 8 2E-02. 2 Fe-59 IE+01 4E-02 3 Co-60 8 2E-02 2 Zr 1E+01 4E-02 .3

'Ru-103 8 2E-02 2 ,

Ru-106 8E+01 2E-01 8E+01 I-131 10 3E-02 2 Cs-134 9 2E-02 2 Cs-137 9 2E-02 2 Ba-140 3E+01 8E-02 6 La-410 2E+01 4E-02 2E+01 Ce-141 2E+01 4E-02 3 Ce-144- 8E+01 2E-01 2E+01 Ra-226 6E+01 1E-01 1E+01

. 'Th-228 1E+01 2E-02 1E+01 16

WMNE ISOTOPES O TABLE 3 LOWER LIMITS OF DETECTION

Detection in limits as stated are per gram of ashed material. The actual detection limits in pCi/gm (wet) will vary by a factor of 10-100, depending on-the wet versus ash weight factor.

- Analysis by chemical separation and beta counting of PdI2 . The non-impregnated with elemental iodine charcoal cartridges must be used when chemical separation is required.

- - The LLD values listed in this table are at the mid-collection time. Samples must be counted within one half-life after collection for these LLD values to be applicable.

LLD =

.29 4.66 2.22 (V)(c)(DF) (Y) 2.22 (V)(c)(DF)(Y)

O where 8= background = cpm at = counting time = min.

2.22 = conversion factor =

p$

V= volume or weight of sample c= counter efficiency DF = decay factor of the radionuclide from mid-collection to mid-count time Y= chemical yield LLD = lower limit of detection at the mid-collection time l

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MM ISOTOPES

'(m QUALITY CONTROL OF ANALYSIS Important elements of the Quality Control Program at Teledyne Iso-topes are (1) Sample and Analysis Control and (2) Laboratory Procedure Con-trol.

Details of these elements of the Quality control Program are provided in' separate documents and issued to our customers on a proprietary basis.

1. Sample and Analysis Control All samples arriving at our. laboratories are assigned a T.I. code number and are processed by the procedures described in our " Quality Control Manual" (Ref. 9 ) . Copy No.114, latest revision date of 01/15/80, of the manual has been issued to the Virginia Electric and Power Company.

The Quality Control Manual contains (a) -Specifications for the . handling and processing of samples and the documentation required for calculating and reporting the results of the analysis.

(b) The organization chart of the Environmental Analysis Group at p Teledyne Isotopes and the resumes of supervisory personnel.

J (c) References to the routine stability checks of backgrounds and check sources required for the calibration of the counting instruments used for radioassaying of samples.

(d) References to the-operational checks on blanks, spikes, splits, and cross checks of samples.

(e) A section on accuracy checks containing summaries of inter-comparison data with EPA cross check programs

2. Laboratory Procedure Control Approved laboratory procedures are followed at Teledyne Isotopes for the analysis of each samples media for specific radionuclides. Copies

'of the following procedures were issued to the Virginia Electric and Power Company: Determination of Radiostrontium, Detemination of Radioiodine, Detection of Gross Alpha and/or Gross Beta, Detemination of Gamma Spectra, Determination of Tritium.

O 18 u . , _ . __ _ _ _ . . _ . . - - - . ~ . . _ - _ _ _ _ _ _ - . . _ _ . _ . . _ - -__.,. _ _ _ ,.-

TTELEDVIE ISOTOPES TABLE 8 RADIATION DOSE TO 'IllE INDIVIDUAL FROM NATURAL AND ARTIFICIAL SOURCES (FROM REF. 11) 1 l

i Annual per Capita Natural and Artificial Source In Exposure Source Whole Body Dose Ref. 11 l

Ambient external gamma 55 mrem / year Page 36, Table 2-13 )

(Virginia)

Medical - bone marrow dose 103 mrad / year Page 213, Table 8-3 l to the adult population 1970 K internal constitutent 17 mrem / year Page 29, Table 2-9 of body for beta, and gamma l whole body ;

i Global fallout - total annual 4.4 mrem / year Page 131, Table 4-10 l per capita body dose, est. 1980 O

O 19

TTELEDVNE f REFERENCES

1. United States Nuclear Regulatory Commission, Regulatory Guide 4.8

" Environmental Technical Specifications for Nuclear Power Plants,"

December 1975.

. 2. Appendix B to Operating License, Environmental Technical Specifications for North Anna Power Station, Units 1 and 2; Virginia Electric and Power Company, Docket Nos. 50-338 and 50-336.

3. Virginia Electric and Power Company; Radiological Environmental Monitoring Manual, June 1977.

4. Energy Research and Development Administration, HASL Procedures Manual, (HASL-300, D-08).

5. United States Nuclear Regulatory Commission. 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 50, Appendix I," October 1977.

6. U.S. Nuclear Regulatory Commission, Regulatory Guide 4.15 " Quality Assurance for Radiological Monitoring Programs -- Effluent Streams and

. the Environment", February, 1979.

n V

7. Radiological Monitoring Program, North Anna Power Station, Annual Report IWL-8043-457, January 1, 1980 to December 31, 1980 prepared by Teledyne Isotopes.

8. Radiological Monitoring Program, North Anna Power Station, Annual Report IWL-8143-468, January 1, 1981 to December 31, 1981 prepared by Teledyne Isotopes.

9. Radiological Monitoring Program, North Anna Power Station, Annual Report IWL-8243-478, January 1, 1982 to December 31, 1982 prepared by Teledyne Isotopes.

10. Teledyne Isotopes; " Quality Control Manual, Environmental Analysis Department", IWL-0032-365, 1983.

11. Teledyne Isotopes; " Quality Assurance Manual, Environmental Department",

IWL-0032-395, 1981.

12. Teledyne Isotopes; " Quality Control Manual, Environmental Radiation Monitoring (Including EPA Cross-Check Re 11ts)", IWL-0032-361, 1983.

13. U.S. Dept. of Energy; EML-405, May 1,1982; EML Nov.1,1982; Environ-mental Measurements Laboratory, New York, New York 10014.

14. U.S. Environmental Protection Agency; Environmental Radiation Data, Reports 23-24, July-December 1980, Reports 25-26, January-June.1981, O a Pert 27. a#1x-s tP e eer. '98'1 cavire" emt 1 a ei tie # r eititv.

Montgomery, Alabama.

20

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FIRST QUARTER 1983

JANUARY 1, 1983 -- MARCH 31, 1983 n 1

DISCUSSION OF RESULTS i

{ AND 1:

! REMP TABLES 1 ,

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MTELEENNE ISOTOPES TABLE OF CONTENTS FIRST QUARTER 1983 ,

PAGE

SUMMARY

AN9 DISCUSSION OF RESULTS LIST OF TABLES iii LIST OF FIGURES 111 EXCEPTIONS AND SPECIAL EVENTS 1A AIRBORNE EXPOSURE PATHWAY 2A DIRECT EXPOSURE PATHWAY 9A WATERBORNE EXPOSURE PATHWAY 12A ,

AQUATIC EXPOSURE PATHWAY 18A INGESTION EXPOSURE PATHWAY 21A h CONCLUSIONS 24A i

APPENDIX A A-1 Complete Data by Sample Type,- Station and Collection Dates s

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TTELENME ISOTOPES

, LIST OF FIGURES

- PAGE FIGURE 3 Air Exposure - Gross Beta and Ce-144 (1977- ) 4A FIGURE .4 Direct Exposure - Environmental TLD (1977- ) 10A FIGURE 5 Water Exposure - Tritium (1977 ) 13A FIGURE 6 Ingestion Exposure - Sr-90 (1977 ) 22A 4

LIST OF TABLES TABLE 4 Remp Summary - Airborne Exposure SA O table 5 Remp Summary - Direct Exposure 11A TABLE 6 Remp Summary - Waterborne Exposure 14A TABLE 7 Remp Summary - Ingestion Exposure 23A 4

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TTELEDfNE ISOTOPES EXCEPTIONS AND SPECIAL EVENTS FIRST QUARTER 1983 -

(DECEMBER 28, 1982 -- MARCH 29, 1983)

EXCEPTIONS

' All~ required samples were collected and analyzed in accordance with the

'VEPC0 radiological environmental monitoring program (REMP) for the first quarter of 1983.

4 SPECIAL EVENTS

'Ouring the first quarter of 1983 no unusual events occurred that could be interpreted as effecting the environment in the vicinity of the North Anna Power Station. While there are still some detections of fission products such as Cs-137, in some media, residual fallout from previous nuclear testing has continued to decline and can be noted in lower levels of activity on air particulate filters and in other pathways.

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' TTELEDnE O AIRBORNE EXPOSURE PATHWAY V (DECEMBER 28, 1982 -- MARCH 29, 1983)

. AIR PARTICULATE FILTERS (STATIONS 1,.2,3,4,5,5A,6,7,21,22,23,24) p . _ Air particulate filters were collected weekly in the first quarter of

~ 1983.and measured for gross beta activity. .The average gross beta activity

. for .the month of March was 0.023 pCi/Cu.M.; in February it was 0.022 pCi/Cu.

M. and-in March it was 0.020 pCi/Cu. M. The gross beta activity is shown on l the graph in Figure 3 on the following page. The--activity has returned.to I' normal low environmental levels from the average high of 0.30 pCi/Cu. M. in April of-1981 following the Chinese atmospheric nuclear tests of October 1980. Concurrent with the low gross beta activity the Ce-144 activity is below the limits of detection. The average gross beta activity of all stations is not significantly different from the control station number 24, Orange, 22 miles, 325 degrees NW of the reactors.

The air particulate filters were composited for the first quarter for

- each station and analyzed on the gamma spectrometer. The naturally occurring cosmogenic nuclide Be-7 was . detected in 11 of 12 samples at normal environ-mental . levels. The terrestrial isotope K-40 was detected at 1 of 12 stations at slightly below detection level.

There was one detection of Co-60, which is a corrosion product produced

-O at nuclear reactors at Station SA, Sturgeons' Creek, 3.2 miles from the release point 11 degrees SSE. The level of activity was 0.00324 pCi/Cu.M. The minimum detection level is 0.00120 pCi/Cu. M. This was confirmed by counting the composite air particulate sample a second time in a clean envelope. No detections at other stations were found.

AIR RADI0 IODINE (STATIONS 1, 2, 3, 4, 5, SA, 6, 7, 21, 22, 23, 24)

No I-131 was detected in the weekly charcoal cartr.idges collected in the vicinity of NAPS indicating that no detectable airborne releases of I-131 -

occurred.

PRECIPITATION (STATION 01)

Rain water was collected monthly at station 01, on site, 0.2 miles,

,42 degrees NE and analyzed for gross beta activity. The average beta activity

. for the first quarter of 1983 was 3.1 pCi/ liter. The resulting deposition was 0.29 nanoC1/Sq. M. This is the nominal environmental level for rain water and shows no indication of an effect due to the operations of NAPS.

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f- TTELEDfME ISOTOPES AIRBORNE EXPOSURE PATHWAY O-. (DECEMBER 28, 1982 -- MARCH 29, 1983)

, S0IL(STATIONS _

1,2,3,4,5,5A,6,7,21,22,23,24)

Soil samples are scheduled to be collected in 1983 and will be analyzed later in the year.

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AIR PARTICULATE FILTERS MONTHLY AVERAGE OF GROSS BETA -

QUARTERLY AVERAGE OF CE-144 i

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O O O TABLE 4 l

RADIOLOGICAL ENVIRONMENTAL P0hlTORIhG PROGRAM SUMM ARY

) PATHWAY- AIR 8ORNE COMPILATION - QUARTERLY SUPMARY VIRGINIA ELECTRIC & POWER COMPANY

' SfMPLE - AIR PARTICULATE FILTERS CONTROL - OR ANGE-22.0 MI.325 DEG.NW NORTH ANNA POWER STATION Uh!TS - PCI/CU. M

Ah* LYSIS NO LIMIT OF ALL INDICATOR SAMPLE S LOCATION hlTH HIGHEST MEAN CONTROL LOCATION NON- REPORTING PERIGO

C ET ECT ION MEAN X E-CC PEAN X E-00 MEAN X E-CC RCUTINE a

MEAN X E-C0 R A NGE STATION FRACTIOh RANGE RANGE FRAC T ION STATION DESCRIPTICN FRACTION 1

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l GR-8 156 0. COT 6 0.021 0.029 0.020 0 12/28/82-03/29/83 i 0.017 - C.C29 C3 013/013 0.016 - 0.057 0.012 - 0.036 i 155/156 MINERAL-7.1 MI.243 OEG. 013/013 i

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O O O TABLE 4 r

RACIOLCGICAL ENVIR0hMENT AL M0hlTCRIhG PROGR AM SUMN ARY

, POTHWCV- AIRBORNE COMPILATION - QUARTERLY SUMPARY VIRGIh! A ELECTRIC & PCWER COMPAhY SCOPLE - ChARCO AL FILTERS CONTRCL - OR ANGE-22.0 MI.325 DEG.NW NORTH ANNA P0bER STATION Uh!TS - PCI/ CU. M thALYSIS NO LIMIT OF ALL INDICATOR S AMPLES LOCATION WITH HIGHEST MEAN CONTROL LOCATION NON- REPORTING PERIDO DETECTION ME AN X E-C C MEAN X E-00 PEAN X E-00 RCUTINE MEAN X E-C0 RANGE STAIION FRACTich R A hG E R AN C E

FRACTION STATION DESCRIPTICN FRACTION i

n I-131 156 0.024 LT C.C20

LT C.020 0 12/28/ E2-C3 /29 /83 LT 0.01C -LT 0.020 LT 0.0080 -LT 0.C20 000/156 000/013 i

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.O O TABLE 4 RADIOLOGICAL ENVIRONMENT AL MONITORIhG PRCGRAM SUMM ARY PCTHWiV- AIR 8CRNE COMPILATION - QUARTERLY

SUMMARY

VIRGINIA ELECTRIC & POWER COMPANY S AMPLE - CCMPOSITE AIR P ARTICULATE FILTERS CONTROL - DR ANGE-22.0 MI.325 DEG.NW NORTH AhkA PCWER STATION UhlTS - FCI/CU. M (USLYSIS NO LIMIT OF ALL INDICATOR SAMPLES LOCATION blTH HIGHEST MEAh CONTROL LDCATION NON- REPORTIhG PERIOD C ET ECT ION MEAN X E-CC MEAN X E-00 MEAN X E-C0 RCUTINE M E AN X E- C D RANGE STATICN FRACTION RANGE RANGE FRACTION STATIch DESCRIPTION FRACTION g.

BE-7 12 0.0120 -0.0423 0.0749 LT 0.0200 0 12/28/82-03/29/83 0.0314 - C.0749 05 001/001 0.0749 - 0.0749 LT 0.02C0 -LT 0.0200 011/012 GOOD HOPE CHURCH-4.2 MI.20 DEG. 000/001 R-40 12 0.C310 C.0303 0.0303 LT C.0500 0 12/28/ 82-C3 /29 /83 0.0303 - C.C3C3 23 001/001 0.0303 - 0.0303 LT 0.05C0 -LT 0.0500 001/012 ASPEN HILL 5-0.9 MI.158 DEG. 000/001 CC-10 12 0.C0120 C.CC324 0.00324 LT C.00200 0 12/28/ 82-C3 /29/83 0.0C324- C.00324 CSA 001/001 0.00324- 0.00324 LT 0.CO200-LT C.CC200 001/012 STURGE 0N'S CREER-3.2 MI.11 DEG. 000/001 1-131 12 0.00120 LT 0.0C9CC LT C.00900 0 12/28 / 82-C3 /29/83 LT 0.0040C-LT C.C090C LT 0.0090 0-L T 0.CC9C0 00C/C12 000/001 C5-137 12 0.C0120 LT 0.0C2CC LT 0.C0100 0 12/28/82-03/29/83 LT 0.00090-LT C. C 020 C LT 0.0010 0-L T 0.0C100 000/ C12 000/001 5

,1

NM O O. O TABLE 4' RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

PATHWAY - AIRBORNE COMPILATION . QUARTERLY

SUMMARY

VIRGINIA ELECTRIC & POWER COMPANY SAMPLE . WATER - PRECIPITATION CONTROL . NORTH ANNA POWER STATION UMITS - pC1/ liter ANALYSIS NO LIMIT OF ALL INDICATOR SAMPLES LOCATION WITH HIGHEST'MEAN CONTROL LOCATION NON-. REPORTING PERIDO-DETECTION MEAN X E.00 .

MEAN X E-00 MEAN X E.00 ROUTINE MEAN X E-00 RANGE STATION FRACTION RANGE RANGE' FRACTION STATION DESCRIPTION' FRACTION GR.B 3 3.1 3.1 3.1

-0 01/01/83-03/31/83 3.1 - 01 003/003 1.5. 6.3 003/003 ONSITE-0.2 MI.42 DEG 0.28 0.56 GR-B 3 0.075 0.56 01 003/003 Deposition 003/003 0.56 0.56 01/01/83 03/31/83 ONSITE-0.2 MI. 42 DEG.

nci/Sq.M.

E

l TTaEDVNE O DIRECT EXPOSURE PATHWAY coECEM8ea 30, 1982 -- MaacM 31, 1983)

ENVIRONMENTAL GAMMA DOSE - THERM 0 LUMINESCENT D0SIMETERS (STATIONS 1, 2, 3, 4, 5, 5A, 6, 7, 21, 22, 23, 24)

The average gamma environmental dose as measured by thermoluminescent dosimeters at twelve stations in the vicinity of the North Anna Power Station during the first quarter of 1983 was 0.17 mr/ day. The range of the environ-mental dose was 0.12 to 0.22 mr/ day. The highest dose was 0.20 mr/ day at station 22, Route 700, 1.0 miles 242 degrees WSW. The lowest dose was 0.10 mr/ day at station 24, which is the control station, Orange at -22 miles, 325 degrees, NW.

Figure 4 shows the plot of the average dose levels monitored, which indicates no significant change in the level of the direct exposure pathway since 1977 due to the operation of the North Anna Power Station. This is less than the estimated whole body dose per quarter due to natural terrestrial and cosmic radiation and internal dosage from natural radionuclides. Table 5 summarizes the average activity of all indicator stations, the location with the highest mean and the activity of the control station 24.

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RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

PATHWAY . DIRECT EXPOSURE COMPILATION - QUARTERLY

SUMMARY

VIRGINIA ELECTRIC and POWER COMPANY SAMPLE - TLD ENVIRONMENTAL.8ADGES CONTROL - ORANGE-22.0 MI.325 DEG NW 1 UNITS - ar/ day STATION.24 ' NORTH ANNA POWER STATION ANALYSIS NO LIMIT OF- ALL INDICATOR SAMPLES

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LOCATION.WITH HIGHEST MEAN CONTROL LOCATION- NON- REPORTING PERIOD DETECTION MEAN X E-00 MEAN X E-00 MEAN X E.00 MEAN X E.00 RANGE ROUTINE STATION FRACTION RANGE RANGE j FRACTION STATION DESCRIPTION

......................... ..................... ..................................... FRACTION

GAMMA 12 0.05 0.17 i DOSE 0.10 0.20 0.10 0 12/30/82 03/31/83 0.20 22 i 012/012 Route 700 - 1.0 MI. 242 DEG WSW 001/001 i

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ISOTOPES O

WATERBORNE EXPOSURE PATHWAY (JANUARY 14, 1983 -- MARCH 31, 1983)

SURFACEWATER(STATIONS 08,09)

. Surface water was collected monthly at two stations and analyzed for radioiodine by the ion exchange method and gansna emitting nuclides. These nuclides and iodine-131 remained below the limits of detection. The quarterly composite was analyzed for tritium. The level of tritium activity at Station

'08, the discharge lagoon, was 2400 pCi/ liter as compared with an average of 2545 pCi/ liter during 1982.

Figure 5 illustrates the trend of tritium activity at Station 08 from 1977 through the first quarter of 1983.

The tritium activity at Station 09 at Lake Anna, 2.2 miles upstream, 320 degrees NW, was 1870 pCi/ liter. The average activity for 1982 was 2055 pCi/ liter. This level of tritium activity is significant since it is upstream of the plant.

,S_U,RFACEWATER(STATIONSW-25,W-33)

Two sanples of surf ace water one from station W-26 and one from station W-33 were received monthly from the Virginia State Department of Health.

( These were analyzed for gross beta and gamma emitters. The average gross beta activity at station W-26 was 2.2 pCi/ liter; at station W-33 it was 2.6 pCi/ liter, which is nominal environmental level. No gamma emitters were measured above the minimum level of detection. The tritium level was an average of 1840 pCi/ liter at station W-26. At station W-33 it was 2433 pCi/ liter.

RIVER WATER (STATION 11)

A quarterly sample of river water was analyzed for gamma emitting nuclides and tritium. Tritium activity at Station 11, North Anna River, 5.8 miles down stream, was 2120 pCi/ liter. This compares with an average of 2600 l pCi/ liter for 1982 and is below the maximum allowable concentration for tritium. No iodine-131 nor gamma emitters were detected suggesting that the effluent releases consisted primarily of tritium.

GROUND WATER (STATION 01A)

Ground water from the environmental well, collected and analyzed quarter-ly, contained no gamma emitters and the tritium activity was below the minimum level of detection. This indicates no adverse effects via the waterborne pathway due to the operations of NAPS.

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O O O TABLE 6 RADIOLOGICAL ENVIRONMENTAL PONITORIhG PRCGR AM SUMM ARY P ATHWfY- W ATEREORNE COMPILATION - QJARTERLY SUPPARY VIRGINIA ELECTRIC f. POWER COMPAhY S AMPLE - W ATER - SURFACE CONTROL - LAKE ANNA,UPS-2.2 PI.320 DEG.NW NORTH ANNA PCWER STATION UhlTS - FCI/ LITER ch! LYSIS NO LIMIT OF ALL INDICATOR SAMPLE S LOCATION WITH HIGHEST ME AN CONTROL LOCAT ION NON- REPORTING PERIOD CETECTION MEAh X E-CC MEAN X E-00 MEAN X E-00 R CU TI NE MEAN X E-C0 RANGE STATION FRACTION R AhG E RANGE FRA CT ION 5TATION DESCRIPTICH FRACTION

__==.. - _ . - - - . _

)

1-131 6 LT C.4C BY CIIEMICAL SEPARATION LT C.40 C 01/14/ 83-C3/15/83 LT 0.30 -LT C.40 LT 0 20 -LT C.4C 00C/CCe 000/003 I-131 6 LT 2C.C BY CAMMA SEPCTROSCOPY LT 2C.C C 01/14/83-03/15/83 LT 20.0 -LT 2C.0 LT 20.0 -LT 20.C 000/006 000/003 CS-13T 6 LT 7.0C LT T.C0 0 01/14/83-C3/15/83 LT 7.C0 -LT T.CC LT 6.00 -LT T.CC C00/006 000/003 H-3 2 21CC. 2400. 18CC. C 01/14/E3-C3/15/83 1800. -

240C. C8 001/001 2400. -2400. 1800. -

18CC.

002/002 OISCH ARGE LAG 00NS-1.1 MI .148 DEG. 001/001 E

I

O . O: O TABLE'6 . STATE.0F VIRGINIA DEPT OF HEALTH./ SPLIT VEPC0c

. RADIOLOGICAL ENVIRONMENTAL' MONITORING PROGRAM"

SUMMARY

PATHWAY - WATERBORNE COMPILATION - QUARTERLY

SUMMARY

SAMPLE - WATER - SURFACE CONTROL - LAKE ANNA,UPS-2.2 MI. 320 DEG.NW UNITS - pCi/ liter ANALYSIS NO LIMIT OF ALL INDICATOR SAMPLES LOCATION WITH HIGHEST MEAN CONTROL LOC ^ TION NON. REPORTING PERIOD DETECTION MEAN X E-00 MEAN X E-00 MEAN X E-00 . ROUTINE MEAN X E-00 RANGE STATION FRACTION RANGE RANGE FRACTION STATION DESCRIPTION FRACTION GR.B 6 2.7 0 01/21/83-03/0R/83 2.2 -

3.2 3.2 006/006 003/003 2.6 -

4.0 W-33 Discharge Canal LT 400. ~

1 131 6 LT 400. -LT 400. 0 01/21/83-03/0R/83 000/006 CS-137 6 LT 7.00 0 01/21/83-03/0R/83 LT 7.00 -LT 7.00 000/006 H-3 6 2136. .

2433. 0 01/21/83 03/0R/83 1840. - 2433. 003/003 2320, 2620.

006/006 DISCHARGE CANAL W-33 9

O O O TABLE 6 RADIOLOGIC AL Ehv!R0hMENT AL M0h!TORIhG PRCCRAM $UMM AR Y PIT HWEY- W ATE R EORN E COMPIL A TION - QUARTERLY SUPP ARY VIRGINIA ELECTRIC & POWER COMPANY SfpFLE - WATER - RIVER CON TROL - LAME ANhA.UPS-2.2 Pl . 320 DEG.NW NORTH AhhA PCbER STATION U2ITS - PCI/ LITER INALYSIS NO LIMIT OF ALL INDICATOR SAMPLES LOCATION WITH HIGHEST ME AN ' CONTROL LOC A T ION h0N- REPORTIhG PERIO0 DETECTION MEAN X E-CC MEAh X E-00 MEAN X E-0C R CUTI NE ME AN X E-C0 RANGE STATION FR ACTICN RAAGE RANGE FRACTION STATI0h DESCRIPTICN FRACTION I-131 1 LT 20.0 0 03/15/83-C3/15/83 LT 20.C -LT 2C.0 C00/C01 C5-13T 1 LT e.CC C 03/15/83-C3/15/83 LT 6.CC -LT e.CC 000/C01 H-3 1 21CC. 2100. 0 03/15/83-C3/15/83 2100. -

21CC. 11 001/001 2100. -2100.

001/C01 NORTH ANNA R.DChNS-5.8 PI.128 CEG.

E

TA8tE 6 RADIOLOGICAL ENVIR08 MENTAL MONITORING PROGRAM SumARY PAT WAY . WATERBORNE COMPILATION - QUARTERLY Sum ARY VIRGINIA ELECTRIC and P06sER COMPANY SApFLE - WATER . GRJUND C0leTROL . PREVIOUS 3 QUARTERS NORTH ANNA POWER STATION UlelTS - pCl/ liter AstALYSIS 10 0 LIMIT OF ALL INDICATOR SAMPLES LOCATION WITH HIGHEST MEAN CONTROL LOCATION NON- REPORTING PERIOD DETECTION MEAN I E-00 MEAN X E-00 MEAN X E.00 ROUTINE E Aft X E-00 RAleGE STATION FRACTION- RAflGE RANGE FRACT!001 STATION DESCRIPTI0s FRACTION I-131 1 10.0 LT 20.0 0 03/31/83 03/31/83 LT 20.0 -LT 20.0 000/001 CS-137 1 9.00 LT 10.0 .

0 03/31/83-03/31/83 LT 10.0 -LT 10.0 000/001 H.3 1 100. LT -90.0 LT 90.0 0 03/31/83-03/31/83 LT 90.0 -LT 90.0 OIA 000/001 .LT 90.0 -LT 90.0 000/001 G

TTELEDVNE ISOTOPES O AQUATIC EXPOSURE PATHWAY (JANUARY 14, 1983 -- MARCH 31, 1983) l SEDIMENT / SILT (STATION 08,09,11)

Sediment and silt samples are collected semiannually and analyzed for !

gamma emitting nuclides. An annual sample will be analyzed for strontium j 89 and 90. The gamma isotopic analysis showed the presence of the terrestrial nuclides Be-7, K-40, Ra-226 and Th-228 at normal environmental levels.

In addition Cs-137, which is a fission product, was found at stations 08 and 11. The average level of activity was 0.199 pCi per gram, dry with the highest reading of 0.232 pCi per gram, dry at station, 11, North Anna River 5.8 miles downstream,128 degrees SSE. These reaoings are probably due to residual f all out from the previous nuclear testing. The activated cor-rosion product Co-60 was measured at stations 08 and 11. The level at station 08, the discharge lagoon, was 0.061 pCi/ gram, dry; at station 11 it was 0.107 pCi/ gram dry. The minimum detection level is 0.02 pCi/gm, dry. None was seen at the control station 09, Lake Anna, 2.2 miles upstream, 320 degrees NW.

Co-60 had previously been detected at station 08 in the third quarter of 1982.

SHORELINE S0ll (STATION 09)

O Shoreline soil is collected semiannually and analyzed for gamma emitting isotopes. A composite is prepared annually and analyzed for strontium 89 and 90.

The gamma spectrum analysis showed the presence of the naturally occurring nuclides K-40, Ra-226 and Ra-228. The fission product Cesium-137 was present at station 09, Lake Anna, 2.2 miles upstream, 320 degrees, hW at a level of 0.049 pCi per gram, dry.

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U 18A

o O O TABLE 6 RACICLOGICAL ENVIRONMENTAL M0hlTCRihG PROGRAM SUMM ARY P"THW AY- ACUATIC COMPILATION - QUARTERLY

SUMMARY

VIRGINIA ELECTRIC & PCWER COMPAhV SAIPLE - SECIMENT/ SILT CONTRCL - LAEE ANhA,UPS-2.2 Mt.320 CEG.NW NDATH ANNA POWER STATION UhlTS - PCI/GM DRY AhALYSIS NO LIMIT OF ALL INDICATOR SAMPLES LOCATIDN WITH HIGHEST MEAN CONTROL LOCATION NON- REPORTING PERIOD DETECTION ME AN X E-CC MEAN X E-00 MEAN X E-00 RCUTIhE MEAN X E-C0 RANGE STATION FRACTIch- R A hGE R AN CE FRACTION STATich DESCRIPTICN FRACTION E-40 3 0.500 9.21 19.7 4.23 C C3/15/23-C3/15/83 3.70 -

19.7 11 001/001 19.7 -

19.7 4.23 -

4.23 003/C03 NORTH ANNA R,00bHS-5.8 MI.128 DEG. OC1/001 CC-10 3 0.0200 0.024C 0.107 LT C.C200 C C3/15/83-C3/15/83 0.0611 - 0.107 11 001/001 0.107 - 0.107 LT 0.0200 -L T 0.C2C0 002/CC3 NORTH ANNA R,0ChNS-5.8 MI.128 CEG. 000/001 I-131 3 0.0300 LT 0.200 LT 0.0700 0 03/15/83-C3/15/83 LT 0.0700 -LT C.200 LT 0.07C0 -LT 0.0TC0 000/CC3 000/001 CS-137 3 0.0200 0.199 0.232 LT C.0200 0 03/15/83-C3/15/83

, 0.167 -

C.232 11 001/001 0.232 - 0.232 LT 0.02C0 -LT 0.0200 002/003 NORTH ANNA R,00hhS-5.3 MI.128 DEG. 000/001 RL-226 3 0.10C C.922 1 10 C.788 0 03/15/ 83-C3/15/83 0.788 - 1 10 11 001/001 1.10 -

1 10 0.788 - 0.788 C03/003 NORTH ANNA R,00hNS-5.8 MI.128 OEG. 001/001 TH-228 3 0.0200 C.861 1.27 LT C.c400 0 03/15/83-03/15/83 0.452 - 1.21 11 001/001 1.27 -

1.27 LT 0.C4C0 -LT 0.04CC 002/C03 NOR1H ANNA R,0ChNS-5.8 MI .128 CEG. 000/001 O

TABLE 6 RADIOLOGICAL ENVIRONMEhTAL PCh!TORIhG PRCGRAM SUMM ARY PATHWAY- AQUNTIC COMPILATION - CUARTERLY SUPMARY VIRGINI A ELECTRIC C POWER COPPAhY S A!PLE - soiwLIFE SOIL CON TROL - NORTH AhhA PChER STATI0h UNITS - PCI/GM DRY AhALYSIS ha LIMIT OF ALL INDICATOR SAMPLES LOCATION blTH HIGHEST NEAh CONTROL LOCATION hDN- REPORTIhG PERIOD C E T ECT ION MEAh X E-CC PEAA X E-00 MEAN X E-CC RCUTINE MEAN X E-C0 RANGE STATION FRACTION RAhGE RANGE l FRAC T ION STATI0h DESCRIPTICN FRACTION l

i l E-40 1 4.51 4.51 0 C3/15/83-C3/15/83 1 4.51 -

4.51 C9 001/001 4.51 -

4.51 001/C01 LAKE ANNA, UPS-2.2 MI. 320 OEG. ICCN I-131 1 LT . 0.0800 0 03/15/83-C3/15/83 LT 0.C8C0 -LT C.C8CC 000/001 CS-137 1 C.c491 0.0491 C 03/15/83-C3/15/83 0.C491 - 0.0491 09 001/001 0.0491 - C.0491 C01/C01 LAKE ANNA, UPS-2.2 MI. 320 DEG. ICCN '

l RA-226 1 C.522 0.522 C C3/15/E3-C3/15/83 0.522 - C.522 C9 001/001 0.522 - 0.522 001/C01 LAKE ANNA, UPS-2.2 MI. 320 DEG. ICCN TH-228 1 0.243 0.243 C C3/15/83-C3/15/83 0.243 - C.243 09 001/001 0.243 - 0.243 001/C01 LANE ANNA, LPS-2.2 MI. 320 OEG. ICCN

W TELB W M ISOTOPES

~s -INGESTION PATHWAY (J

. (JANUARY 0 983 -- MARCH 17, 1983)

MILK (STATIONS 12,13,14A)

Milk samples collected monthly from the three stations indicated above contained the usual radionuclides K-40 and Sr-90. The average Sr-90 activity was 2.6 pCi/ liter compared to an average of 2.85 pCi/ liter for the year 1982. See Figure 6 for a graph of the quarterly level of Sr-90 activity since 1977.

A gamma analysis of the milk samples showed no gamma emitters above the minimum levels of detection except K-40, which is a naturally occurring, terrestrial nuclide.

Iodine-131 was below the limits of detection of 0.5 pCi/ liter. These results indicate that no detectable NAPS releases occurred that adversely affected milk samples.

FISH (STATIONS 08,09)

No fish samples were collected during the first quarter. Fish is O collected annually at the beginning of the season from two stations.

TERRESTRIAL VEGETATION (STATION 21,-23)

Vegetation is collected annually during harvest and analyzed for gamma emitting isotopes.

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O O O TABLE 7 RACIOLOGICAL ENVIRONMENTAL MONITCRIhG PROGRAM SUMM ARY PATHNAY- INGESTION COMPIL ATION - CUARTERLY SUPPARY VIRGINI A ELECTRIC & PCWER COMPANY SAPPLE - M ILK CONTRCL - NDRTH ANNA P0bER STATION Uh!TS - PCI/ LITER AhALYSIS NO LIMIT OF ALL IN0!CATOR SAMPLES LOCATION WITH HIGHEST MEAN CONTROL LOCATION NON- REPORTING PERIOD CETECTION MEAN X E-CC PEAN X E-00 MEAN X E-00 ROUTIhE MEAN X E-00 R A NGE STATICN FR ACTIch RAhGE R AN GE FRACTION STATICh OESCRIPTICN FRACTIDN i

I-131 9 0.50 LT C.5C BY CHEMICAL SEPARATION O 01/20/83-C3/17/83 LT 0.50 -LT C.50 000/C09 K-40 9 200. 1270. 1320. C 01/20/83-03/17/83 1180. -

132C. 14A 003/003 1180. -1500.

009/COS COLVIN DAIRY -- 8.0 MI. 310 NW I-131 9 0.500 LT 20.0 BY GAMMA SPECTROSCOPY 0 01/20/83-03/17/83 LT 20.0 -LT 2C.C 000/009 CS-137 9 3.C0 LT 7.CC C 01/20/83-C3/17/83 LT 7.C0 -LT 7.CC 000/009 SR-89 3 LT 8. LT 8. ! ! ~ ! !

000/003 SR-90 3 0.80 2.6 4.1 1.3 4.1 13 4.1 0 01/20/83-03/17/83 4.1 003/003 Fredericks Hall -- S.6 MI. 205 DEG SSW 001/001 0

e

? _

CONCLUSIONS (DECEMBER 28, 1982 -- MARCH 29, 1983)

The results of the radiological environmental monitoring program conduct-ed in the vicinity of the North Anna Power Station show that no measurable releases attributable to the operations of Units One and Two were detected which could be considered detrimental to the environment.

Increasing levels of tritium in the water pathway have been monitored since the start of operations in 1978. These levels show signs of lessening in the past six months. The tritium activity at the discharge lagoon (Station 08)duringthefirstquarterwas2400pCi/literwhichisslightlybelowthe average level of 2545 pCi/ liter for 1982. The tritium level at Lake Anna,

' 2.2 miles upstream-(Station 09) was 1870 pCi/ liter down somewhat from the level of 2055 in 1982. The level of tritium in the North Anna River, 5.8 miles downstream (Station 11) was 2120 pCi/ liter. One detection of C0-60, an activated corrosion product,-occurred on an air particulate filter at station SA, 3.2 miles from the release point, 11 degrees SSE, at slightly above the minimum level of detection.

It may be concluded the operations of the North Anna Power Station have

- had no detrimental impact on the environment in the vicinity of the plant.

O O

e 24A

l',

t T TELEDYNE ISOTOPES :!

- APPENDIX A !

-..; )

'FIRST QUARTER 1983 I

i f

m DATA TABLES i i

by SAMPLE TYPE, STATION AND COLLECTION DATE i i

l A 6 -

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9; A-1 M _ _ - ____ --, _ . . _ N gunWW N 9 #

1 LO O O VIRGINIA ELECTRIC C P0hER COMPANY NORTH ANNA P0hER STATIch ENPOSURE PATHWAY - AIR 8CRNE AIR PARTICLLATE & CHARCOAL FILTERS STATICN NLMBER 01 ChSITE-C.2 MI.42 DEG COLL. T IME AP FILTER MI D-Co uN T CFARCOAL FILTER START STOP GROSS BETA TIME I-131 CATE- DATE VOLUME UhlTS (PCI/CU. M l CATE TIME IPCI/CL. M i 12/28 01/04 1.29E 02 CU. M 2.1 +-0. 6 E-C2 01/12 L.T. 1. E-C2

01/C4 01/11 1.31E 02 CU. M 1. 9 + - 0. 6 E- C2 01/19 L.T. 1. E-C2 C1/11 01/18 1.31E 02 CU. M 1. 7 +-0.5 E-02 01/26 L.T. 1. E-C2 01/18 01/25 1.31E 02 CU. M 2.1 +-0 5 E-C2 02/01 L.T. 1. E-C2 01/25 02/01 1.31E 02 CU. M 2. 5 +-0. 6 E- C2 02/10 L.T. 1. E-C2 i

02/C1 02/08 1.32E 02 CU. M 2.0 +-0.6 E-C2 02/19. L.T. 9. E-C3 02/08 02/15 1.26E 02 CU. M 1.9 +-0.5 E-02 02/25 L.T. 9. E-C3 02/15 02/22 1.30E 02 CU. M 2.3 +-0.6 E-C2 03/02 L.T. 1. E-C2 02/22 03/01 1.29E 02 CU. M 1. 9 +-0. 6 E- C2 03/09 L.T. 1. E-C2 03/01 03/08 1.31E 02 CU. M 2. 0 + -0. 5 E-C2 03/17 L.T. 1. E-02 03/08 03/15 1.32E 02 CU. M 1.7 +-0.7 E-C2 03/24 L.T. 8. E-C3 03/15 03/22 1 30E 02 CU. M 2. 2 +-C. 6 E- C2 03/31 L.T. 1. E- C 2

! 03/22 03/29 1 32E C2 CU. M 1 9 + -0. 6 E- C2 04/08 L.T. 1. E-02 4

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O O VIRGINIA ELECTRIC C P0hER COMPANY NORTH ANNA POWER STATICh EMPOSURE PATHkAY - AIRBCRNE AIR PARTICLLATE & CHARCGAL FILTERS STATION NUMBER 02 FREDERICKS HALL-5.3 MI. 225 DEG.

COLL. TIME AP FILTER MI D-COUN T CFARCOAL FILTER START STOP GROSS 8 ETA TIME I-131 CATE DATE WOLUME UNITS (PCI/CU. M I DATE TIME IPCI/CL. M i 12/28 01/04 1.37E C2 CU. M 2.2 +-0.6 E-C2 01/12. L.T. 2. E-C2 01/C4 01/11 1.38E 02 CU. M 1. 7 +-0. 6 E-C2 01/19 L.T. 2. E-C2 I 01/11 01/18 1.37E 02 CU. M 1. 6 + -0. 5 E-02 01/25 L.T. 1. E-C2 01/18 01/25 1.37E 02 CU. M 1.9 +-0 5 E-C2 02/01 L.T. 6. E-C3 01/25 02/01 1.37E C2 CU. M 2. 2 + - 0. 6 E- C2 02/10 L.T. 9. E-C3 02/C1 02/08 1.38E 02 CU. M 1.4 +-0.5 E-C2 02/18 L.T. 7. E-C3 02/08 02/15 1.39E 02 CU. M 2.5 +-0.5 E-02 02/25 L.T. 2. E-C2 02/15 02/22 1.37E 02 CU. M 2 4 +-0. 5 E-C2 03/02 L.T. 1. E- C 2 02/22 03/01 1.37E 02 CU. M 1. 5 + -0. 5 E- C2 03/09 L.T. 1. E-C2 03/01 03/08 1 37E 02 CU. M 1.4 +-0.5 E-02 03/17 L.T. 1. E-02 03/08 03/15 1.37E 02 CU. M 1.4 +-0.6 E-02 03/24 L.T. 6. E-C3 03/15 03/22 1.36E 02 CU. M 1.5 +-0.6 E-C2 03/31 L.T. 2. E-C 2 03/22 03/29 1.38E C2 CU. M 2. 3 +-0. 6 E- C2 04/08 L.T. 2. E-C2 se

O O O VIRGINIA ELECTRIC C PubER COMPANY NCRTH ANNA poker STATICA EXPOSURE PA1HbAY - AIR 8CRNE

?

AIR PARTICULATE E. CHARCOAL FILTERS STATICN NLMBER 03 PIhER A L-7.1 MI.243 CEG.

COLL. TIME AP FILTER MI D-COUN T CFARCOAL FILTER START STOP GROSS BETA TIME I-131 CATE DATE VOLUME Uh1L IPCI/CU. M I CATE TIME IPCI/CL. P I 12/28 01/04 1.37E C2 CU. M 3 7 +-0. 7 E- C2 01/12 L.T. 2. E-C2 01/C4 01/11 1.34E 02 CU. M 3.C +-0.6 E-C2 01/19 L.T. 1. E-C2. .'

01/11 01/18 1.34E 02 CL. M 1.9 +-0.5 E-02 01/25 L.T. 1. E-C2 01/18 01/25 1 37E 02 CU. M 2.4 +-C.5 E-C2- 02/01 L.T. 1. E-C2 01/25 02/01 1.15C 02 CU. M 4.2 +-0.8 E-C2 '02/10 L.T. 1. E-C2

, 02/C1 02/08 1.34E 02 CU. M 2. 4 + -0. 6 E-C2 02/18 L.T. 1. E-C2 i

02/08 02/15 1.38E 02 CU. M 3.9 +-0.6 E-02 02/25 L.T. 1. E-C2

, 02/15 02/22 1.37E 02 CU. M 3.3 +-0.6 E-C2 03/02 L.T. 1. E-C2 02/22 03/01 1.37E C2 CL. M 1. 8 + -0. 5 E- C2 03/09 L.T. 1. E-C2 1

03 / C1 03 /08 1.37E 02 CU. M 2. 3 + -0. 5 E-C2 03/17 L.T. 1. E-02 03/08 03/15 1.37E 02 CU. M 1.6 +-0.6 E-C2 03/24 L.T. 1. E-C2

, 03/15 03/22 1.36E 02 CU. M 1.7 +-C.6 E-C2 03/31 L.T. 1. E-C2 i 03/22 03/29 1 38E C2 CU. M 5. 7 + -0. 8 E-C2 04/08 L.T. 1. E-C2 t

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O O O VIRGINIA ELECTRIC C P0bER COMPANY NCRTH ANNA P0hER STATICh EXPOSURE PATHbAY - AIR 8 CANE i AIR PARTICULATE C CHARCOAL FILTERS STATICN NUMBER 04 WARES CROSSROADS-5.1 FI.287 DEC.

$ COLL. TIME AP FILTER MID-COUNT CFARCOAL FILTER START- STOP GROSS BETA TIME I-131 I

CATE CATE VOLUME UNITS IPCI/CU. M i CATE TIME (PCI/CL. M i i

12/28 01/04 1.36E C2 CU. M 2. 2 + -0. 6 E-C2 01/12 L.T. 1. E-C2 '

01/C4 01/11 1.38E 02 CU. M 1. 9 + -0. 6 E-C2 01/19 L.T. 9. E-03 CU. M 1. 6 + -0. 5 E- 02 01/11 01/18 1.37E 02 01/25 L.T. 8. E-C3 a 01/18 01/25 1.37E 02 CU. M 9.0 +-4.3 E-C3 02/04 L.T. 1. E-C2

{; 01/25 02/01 1.37E C2 CU. M 3 4 +-0. 6 E- C2 02/10 L.T. 1. E-C2 02/01 02/08 1.37E 02 CU. M 1. 0 +-0. 5 E-02 02/20 L.T. 2. E-C2 02/08 02/15 1.39E 02 CU. M 1.9 +-0.5 E-02 02/25 L.T. 1. E-C2 02/15 02/22 1.35E 02 CU. M 2.2 +-0.5 E-C2 03/02 L.T. 2. E-C2 02/22 03/01 1.37E C2 CU. M 1.4 +-0.5 E-C2 03/09 L.T. 1. E-C2 03/01 03/08 1.33E 02 CC. M 1. 9 + -0. 5 E-r2 03/17 L.T. 1. E-C2

03/08 03/15 1.38E 02 CU. M 1.0 +-0.6 E 'J2 03/24 L.T. 1. E-C2

! 03/15 03/22 1.36E 02 CU. M 1.6 +-C.6 E *2 03/31 L.T. 1. E-C2 03/22 03/29 1 37E 02 CU. M 2.1 +-0.6 E-C2 04/08 L.T. 2. E-C2 i

i 2

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J 1

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1 1

v 1

O O O VIRGINIA ELECTRIC C P0hER COPPANY NCRTH ANNA PahER STATICA EXPOSURE PATHbAY - AIRBCANE AIR PARTICULATE & CHARC0AL FILT ERS STATICN NUMBER 05 GC00 HCPE CHURCH-4.2 PI .20 DEG.

CCLL. TIME AP FILTER M ID-CO UN T CFARCOAL FILTER START STOP GROSS BE TA TIME I-131 CATE DATE VOLUME UNITS IPCI/CU. M i DATE TIME IPCI/CL. M I 12/28 01/04 1 14E C2 CU. M 3. 7 + -0. 8 E-C2 01/12 L.T. 2. E-C2 01/C4 01/11 1 15E 02 CU. M 3. 5 + -0. 7 E-C2 01/19 L.T. 1. E-02 -'

01/11 01/18 1.15E 02 CL. M 2.4 +-C.6 E-C2 01/25 L.T. 1. E-C2 01/18 01/25 1.14E 02 CU. M 2. 9 +-0. 6 E- C2 02/01 L.T. 1. E-C2 CU. M '

01/25 02/01 1.15E C2 3. 8 +-0. 7 E- C2 02/10 L.T. 1. E-C2 02/C1 02/08 1.15E 02 C U. M 1. 9 + -0. 7 E-02 02/20 L.T. 2. E-02 C2/08 02/15 1.3TE 02 CU. M 3.1 +-0.6 E-02 03/02 L.T. 2. E-Ce 02/15 02/22 1.13E 02 CU. M 3.1 +-C.7 E-C2 03/02 L.T. 2. E-C2 02/22 03/01 1.13E 02 CU. M 2. 7 +-0. 7 E- C2 03/10 L.T. 2. E-C 2 03/C1 03/08 1.15E C2 CU. M 2. 8 + -0. 6 E- C2 03/17 L.T. 1. E-C2 03/08 03/15 1.13E 02 CU. M 1 9 +-0.8 E-02 03/24 L.T. 1. E-C2 03/15 03/22- 1.14E 02 CU. M 1.8.+-C.7 E-C2 03/31 L.T. 2. E-C2 03/22 03/29 1.15E C2 CU. M 2. 3 +-0. 7 E- C2 04/08 L.T. 1. E-C2 a

I

O O O VIRGINIA ELECTRIC C P0bER COPPANY NCRTH ANNA PohER STATICh E3P05URE PATHbAY - AIR 8CRNE AIR PARTICOLATE & CHARCOAL FILTERS STATICN NLM8ER 05A SlORGECN'S CREER-3.2 Pt. 11 OEG.

CCLL. TIME AP FILTER. M ID-CO UN T CFARCOAL FILTER START STOP GROSS 8 ETA TIME I-131 CATE CATE VOLUME UNITS IPCI/CU. M I CATE TIME (PCI/CL. M i 12/28 01/04 1.33E C2 CU. M 2 6 +-0. 6 E-C2 01/12 L.T. 1. E-C2 01/C4 01/11 1.34E C2 Co. M 2.4 +-0.6 E-C2 01/19 L.T. 1. E-C2 '

01/11 01/18 1.33E 02 CO. M 1.5 +-0.5 E-02 01/26 L.T. 1. E-C2 01/18 01/25 1.33E 02 CU. M 1.9 +-C.5 E-C2 02/01 L.T. 8. E-C3 01/25 02/01 1.34E 02 CU. M 2. 5 + -0. 6 E- C2 02/10 L.T. 1. E-C2 02/C1 02/08 1.34E 02 Co. M S. 7 + -5.2 E-03 02/20 L.T. 1. E-C2-02/08 02/15 1.35E 02 CL. M 2. 6 + -0.5 E-02 02/25 L.T. 2. E-C2 02/15 02/22 1.33E 02 CU. M 2.7 +-0.6 E-C2 03/02 L.T. 2. E-C2 02/22 03/01 1.33E C2 CU. M 1.9 +-C.6 E-C2- 03/09 L.T. 2. E-C2 03/C1 03/08 1.33E 02 CL. M 2. C + -0. 5 E-C2 03/18 L.T. 1. E-C2 03/08 03/15 1.34E 02 CO. M 2.9 +-0.7 E-02 03/24 L.T. 1. E-C2 03/15 03/22 1.33E 02 CU. M 1.7 +-0.6 E-C2 03/31 L.T. 1. E-C2 03/22 03/29 1 34E 02 CU. M 3.C +-0.6 E-C2 04/08 L.T. 1. E-C2 b

e

O O O VIRGINIA ELECTRIC C P0hER COPPANY NCRTH ANNA PohER STATICh EXPOSURE PATHbAY - AIRBCRNE AIR PARTICOLATE & CHARCOAL FILTERS STATION NUMBER 06 LEWY-4.7 MI.115 DEG.

COLL. TIME AP FILTER M ID-CO UN T CFARCOAL FILTER START STOP GROSS BETA TIME I-131 CATE DATE VOLUME UNITS IPCI/CU. M i DATE TIME IPCI/CL. P l 12/28 01/04 1.37E C2 CU. M 3.1 +-0. 7 E-C2 01/12 L.T. 1. E-C2 01/C4 01/11 1.38E 02 CU. M 1. 9 +-0. 6 E-02 01/19 L.T. 2. E-C2 '

C1/11 01/18 1.37E 02 CL. M 2. 7 + -0. 6 E-92 01/26 L.T. 1. E-C2 01/18 01/25 1.38E 02 CU. M 2.3 +-0.5 E-C2 02/01 L.T. 8. E-C3 01/25 02/01 1.37E 02 CU. M 3. C +-0. 6 E- C2 02/10 L.T. 1. E-C2 02/C1 02/08 1.37E 02 CO. M 1. 4 + -0. 5 E- C2 02/18 L.T. 8. E-C3 02/C8 02/15 1.37E 02 CU. M 2.5 +-0.5 E-02 02/25 L.T. 1. E-C2 02/15 02/22 1.37E 02 CU. M 2.2 +-0.5 E-C2 03/02 L.T. 1. E-C2 02/22 03/01 1.37E 02 CU. M 2. 7 + - 0. 6 E- C2 03/09 L.T. 2. E-C2 03/C1 03/08 1.37E 02 CO. M 2. 0 + -0. 5 E-C2 03/17 L.T. 1. E-C2 C3/08 03/15 1.37E 02 CL. M 1.4 +-0.6 E-02 03/24 L.T. 7. E-C3 03/15 03/22 1.36E 02 CU. M 1.4 +-0.5 E-C2 03/31 L.T. 1. E-C2 03/22 03/29 1.38E 02 CU. M 1. 8 +-0. 5 E- C2 04/10 L.T. 1. E-C2 b

~

O O O VIRGINIA ELECTRIC C POWER COPPANY NCRTH ANNA PohER STATIch EXPOSURE PATHbAY - AIR 8CRNE AIR PARTICLLATE & CHARCOAL FILTERS STATICN NLM8ER OT BLMPASS-7.3 MI.167 DEG.

CCLL. TIME AP FILTER P I D-COUN T CFARCOAL FILTER START STOP GROSS BETA TIME I-131 CATE CATE VOLUME UNITS (PCI/CU. M I CATE TIME (PCI/CL. M i 12/28 01/04 1.33E 02 CU. M 2. 0 +-C. 7 E-C2 01/12 L.T. 1. E-C2 01/C4 01/11 1 33E 02 CU. M 2. 4 +-0. 6 E-C2 41/19 L.T. 1. E-C2 '

01/11 01/18 1.32E 02 CU. M 1 7 +-C.5 E-02 01/26 L.T. 1. E-C2 01/18 01/25 1.32E 02 CU. M 2.3 +-C.5 E-C2 02/01 L.T. 8. E-C3 01/25 02/01 1.32E 02 CU. M 2. 3 +-C. 6 E- C2 02/10 L.T. 1. E-C2 02/C1 02/08 132E C2 CU. M 1. 7 + - 0. 6 E- C2 02/20 L.T. 1. E-C2 02/C8 02/15 1.33E 02 CU. M 2. 9 + -0.6 E-02 02/25 L.T. 1. E-C2 02/15 02/22 1.31E 02 CU. M 2.3 +-0.6 E-C2 03/03 L.T. 2. E-C2 02/22 03/01 1.32E 02 CU. M 2.0 +-C.6 E-C2 03/09 L.T. 1. E-C2 03/C1 03/08 1.32E C2 CU. M 1. 8 + -0. 5 E-C2 03/17 L.T. 6. E-C3 03/C8 03/15 1.33E 02 CL. M 1.3 +-0.7 E-02 03/24 L.T. 7. E-C3 03/15 03/22 1 30E 02 CU. M 1.3 +-0.6 E-C2 03/31 L.T. 1. E-C2 03/22 03/29 1.33E C2 CU. M 2. 7 + -C. 6 E-C2 04/10 L.T. 2. E-C2 b

j

O O O VIRGINIA ELECTRIC C POWER COPPANY NCRTH ANNA P0hER STATIch E3POSURE PA THbAY - AIR 80RNE AIR PARTICLLATE C CHARCCAL FILTERS STATION NLM8ER 21 RCUTE 685-1.0 MI.3 01 CEG.

CCLL. ~!ME AP FILTER M IO-CO UN T CFARCOAL FILTER START STOP GROSS BETA TIME l-131 CATE DATE VOLUME UNITS (PCl/CU. M I DATE TIME (PCI/CL. M i 12/28 01/04 1.38E 02 CU. M 1.9 +-C.6 E-C2 01/12 L.T. 1. E-C2 01/C4 01/11 1.41E C2 CU. M 1. 6 +-0. 5 E-C2 01/19 L.T. 1. E-C2 '

01/11 01/18 1.41E 02 CU. M 1.9 +-0.5 E-02 01/26 L.T. 1. E-C2 01/18 01/25 1.39E 02 CU. M 2.3 +-0.5 E-C2 02/01 L.T. 5. E-C3 01/25 02/01 1.26E 02 CU. M 2 6 + -0. 6 E- C2 02/11 L.T. 6. E-C3 02/C1 02/08 1 18E 02 CU. M 1.6 +-0.6 E-C2 02/18 L.T. 1. E-C2 02/08 02/15 1.40E 02 CU. M 2.1 +-0.5 E-02 02/25 L.T. 6. E-C3 02/15 02/22 1.40E 02 CU. M 2.2 +-C.5 E- C2 - 03/03 L.T. 2. E-C2 02/22 03/01 1.40E 02 CU. M 1 7 +-C. 5 E-C2 03/09 L.T. 2. E-C2 03/C1 03/08 1.41E 02 CU. M

. 2. 4 + -0. 5 E-C2 03/17 L.T. 8. E-C3 01/08 03/15 1.40E 02 CU. M 1. 5 + -C. 6 E-C2 0?./24 L.T. 7. E-C3 03/15 03/22 1.40 E 02 CU. M 1 6 +-0.6 E-C2 03/31 L.T. 1. E-C2 03/22 03/29 1 41E 02 CU. M 1. 3 + -0. 5 E- C2 04/10 L.T. 2. E-C2

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VIRGINIA ELECTRIC E P0bER COPPANY NCRTH ANNA PohER STATICA ENPOSURE PATHbAY - AIRBCRNE AIR PARTICLLATE & CHARCOAL FILTERS STATION NLM8ER 22 RCOTE 100-1.0 MI.242 CEC.

CCLL. TIM E AP FILTER M I O-CO UN T CFARCOAL FILTER START STOP GROSS BETA TIME I-131 CATE CATE WOLUME UNITS IPCI/CU. M I CATE TIME IPCI/CL. M i 12/28 01/04 1.38E C2 CU. M 1.6 +-C.6 E-C2 01/12 L.T. 1. E-C2 01/C4 01/11 1.38E C2 CU. M 2. 0 +-0. 6 E- C2 01/19 L.T. 1. E-C2 01/11 01/18 1.38E 02 CU. M 1 1 +-C.5 E-02 C1/26 L.T. 1. E-C2 j 01/18 01/25 1.38E 02 CU. M 2.0 +-0.5 E-C2 02/01 L.T. 6. E-C3 01/25 02/01 1.38E C2 CU. M 1. 8 + - C. 5 E- C2 02/10 L.T. 1. E-C2 02/ c1 02 /08 138E 02 CU. M 1.5 +-0.5 E-C2 02/20 L.T. 1. E-C2 4 02/08 02/15 1.38E 02 CU. M 2. 8 + - 0. 6 E-02 02/25 L.T. 1. E-C2 02/15 02/22 1.38E 02 CU. M 2.7 +-0.6 E-C2 03/03 L.T. 1. E-C2 02/22 03/01 1.38E 02 CU. M 2.4 +-0.6 E-C2 03/09 L.T. 1. E-C2 1 03/C1 03/08 1.36E 02 CU. M 1.9 +-0.5 E-C2 03/17 L.T. 1. E-C2 03/08 03/15 1.38E 02 CO. M L. T. 6. E-03 03/24 L.T. 9. E-C3

. 03/15 03/22 1.38E 02 CU. M 2.8 +-C.6 E- C2 04/01 L.T. 1. E-C2 03/22 03/29 1 44E 02 CU. M 1. 6 +-C. 5 E-C2 04/10 L.T. 1. E-C2 l

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O O O VIRGINI A ELECTRIC C P0hER COPPANY NCRTH ANNA PabER STATICh EXPOSURE PATHbAY - AIRBCRNE AIR PARTICLLATE C CHARCCAL FILTERS STATICN NLM8ER 23 ASPEN HILLS-0.9 MI.158 CEG.

CCLL. TIME AP FILTER MID-COUNT CFARCOAL FILTER START STOP GROSS 8 ETA TIME I-131 CATE CATE VOLUME UNITS IPCI/CU. M I CATE TIME (PCI/CL. M i 12/28 01/04 1.37E C2 CU. M 2.7 +-0.6 E-C2 01/12 L.T. 1. E-C2 '

01/C4 01/11 1.37E 02 CU. M 1.4 +-0.5 E-C2 01/19 L.T. 1. E-C2 01/11 01/18 1.37E 02 CL. M 2.6 +-0.6 E-02 C1/26 L.T. 8. E-C3 01/18 01/25 1.31E 02 CU. M 1.6 +-0.5 E-C2 02/01 L.T. 8. E-C3 01/25 02/01 1.37E C2 CU. M 3.2 +-C.6 E-C2 02/10 L.1. 1. E-C2 02/C1 02/08 1.37E 02 CL. M 1.1 +-0.5 E-C2 02/19 L.T. 7. E-C3 02/08 02/15 1.38E 02 CL. M 2.3 +-C.5 E-02 C2/25 L.T. 5. E-C3 02/15 02/22 1.35E 02 CU. M 1 8 +-C.5 E-C2 03/03 L.T. 2. E-C2 02/22 03/C1 1 36E 02 CU. M 2. 8 + - 0. 6 E- C2 03/09 L.T. 1. E-C2 03/C1 03/08 1.37E C2 CL. M 2. 3 +-0. 5 E-02 03/17 L.T. 9. E-C3 03/08 03/15 1.29E 02 CL. M 1.4 +-0.7 E-02 03/24 L.T. 7. E-C3 03/15 03/22 1.36E 02 CU. M 4.4 +-0.7 E-C2 03/31 L.T. 1. E-C2 03/22 03/29 1.37E C2 CU. M 1. 4 +-0. 5 E- C2 04/10 L.T. 9. E-C3

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O O O VIRGINIA ELECTRIC C PCWER COPPAhY.

hCRTH ANNA P0bER STATI0h EXPOSURE PATHbAY - AIRBCRNE AIR PARTICULATE C CHARCCAL FILTERS STATICN NLP8ER 24 CRANGE-22.C MI.325 DEG. ICONTRCL )

COLL. TIME AP FILTER M I C-CO UN T CbARCOAL FILTER STANT STOP GROSS BEIA TIME I-131 CATE CATE VOLUME UNITS IPCI/CU. M I DATE TIME IPCI/CU. M i 12/28 01/04 1.33E 02 CL. M 2.4 +-0.6 E-C2 01/12 L.T. 1. E-C2 I

01/04 01/11 1.29E 02 CU. M 2.0 +-C.6 E-C2 C1/19 L.T. 1. E-C2 01/11 01/18 1.30E C2 CU. M 2 1 +-C. 6 E-C2 01/26 L.1. 9. E-C3 01/14 01/25 1.31E C2 CU. M 1.4 +-0.5 E-C2 02/01 L.T. 8. E-03 01/25 02/01 1.47E 02 CL. M 2.C +-0.5 E-C2 02/10 L.T. 2. E-C2 02/01 02/08 9.48E 01 CU. M 2.7 +-C.8 E-C2 02/18 L.T. 1. E-C2 02/08 02/15 1.30E C2 CU. M 1.8 +-0.5 E-C2 C2/25 L.T. 9. E-C3 02/15 02/22 1.33E 02 CU. M 2.2 +-0.5 E-C2 03/03 L.T. 1. E-C2 02/22 03/01 1.27E 02 CU. M 1.9 +-0.6 E-02 03/09 L.T. 2. E-C2 C3/01 03/08 1.37E 02 C0. M 1.6 +-0.5 E-C2 03/17 L.T. 1. E-C2 03/08 03/15 1.26E 02 CU. M 1.2 +-C.7 E-C2 03/24 L.T. 8. E-C3 03/15 03/22 1.21E 02 CU. M 3.6 +-0.7 E-C2 03/31 L.T. 1. E-02 03/22 03/29 1.26E 02 CU. M 1 6 +-C.6 E-C2 04/10 L.T. 1. E-C2

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O O O WIRGINIA ELECTRIC E PCWER COPPAhY hCRTH ANNA PabER STATIOh EXPOSURE PATHbAY - AIRBCRNE COMPOSITE AIR PARTICULATE FILTERS IPCI/CL. P I STATION NUMBER 01 ChSITE-C.2 Pl.42 DEG CATE CCLLECTEC 12/2E-C3/29 GAPPA SPECTRLM AN ALY S IS I

EE-7 5 . 5 5 +- 1. 2 2 E- C 2 K-4C L.T. 4. E-C2 MM-54 L.T. 1. E-C3 '

CC-58 L.T. 1. E- C 3 FE-59 L .T . 3. E-C3 CC-6C L.T. 3. E-C3 Zh-65 L.T. 3. E-C3 25-95 L.T. 1. E-C3 80-103 L.T. 2. E-C3 RU-1C6 L.T. 1. E-C2 I-131 L.T. 4. E-C3 CS-134 L.T. 1. E- C 3 CS-137 L.T. 1. E-C3 BA-14C L.T. 1. E-C3 CE-141 L.T.- 2. E-C3 CE-144 L .T . 7. E-C3 RA-226 L.T. 2. E- C 2 TF-228 L.T. 2. E-C3 .

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VIRGINIA ELECTRIC C P0hER CCPPANY j NCATH ANNA PChER STATICA EXPOSURE PATHbAY - AIR 8CRNE CCPPCSITE AIR PARTICOLATE FILTERS l

IPCI/CU. M I STATICN NLM8ER 02

FREDERICKS HALL-5.3 Pl. 225 DEG.

i^

CATE CCLLECTEC 12/20-03/29

. GAPPA SPECTPUM AN ALYS IS

'I BE-7 4 .14 +- 1.24 E- C 2 l

K-4C L.T. 4. E-C2 l Mh-54 L.T. 1. E-C3

! CC-58 L.T. 1. E-C3 i FE-59 L .T . 4. E-C3 i CC-6C L.T. 1. E-C3 i ZN-65 L.T. 3. E- C 3 ZP-95 L .T . 2. E-C3 i RU-!C3 L .T . 2. . E-C3

, RU-1C6 L.T. 1. E-C2 I-131 L.T. 5. E-C3 l CS-134 L .T . 2. E-C3

, CS-137 L.T. 1. E-C3

, BA-140 L .T . 4. E-C3 CE-141 L.T. 2. E- C 3

, CE-144 L.T. 7. E- C 3 j PA-226 L .T . 2. E-02 l TF-228 L.T. 2. E-C3 i

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O O 'Oi VIRGINIA ELECTRIC & PChER COMPANY NCRTH AhNA PubER STATICh EXPOSURE PATHbAY - AIRBCRNE CCMPOSITE AIR PARTICULATE FILTERS (PCI/CL. M I STATICN NLM8ER 03 FIhERAL-7 1 MI.243 CEG.

DATE CCLLECTEC 12/28-C3/29-GAPPA SPECTSUM AN ALYS IS i

! BE-7 4.45+-1.00E-C2 K-4C L.T. 3. E-C2 Ph-54 L .T . 1. E-03 CC-58 L .T . 1. E-C3 4 FE-59 L .T . 3. E-C3 j CC-60 L .T . 1. E- C 3 Zh-65 L .T . 3. E-C3

! Z8-95 L.T. 1. E-03 RU-1C3 L .T . 1. E-C3 j RU-106 L.T. 1. E- C 2 1 I-131 L .T . 4. E-C3

! CS-134 L .T . 1. E-C3 j CS-137 L .T . 1. E-C3 8A-140 L.T. 3. E-C3 CE-141 L.T. 2. E-C3 I CE-144 L .T . 5. E-C3 4

RA-226 L .T . 1. E-C2 j TH-228 L.T. 1. E-C3 1

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O O O VIRGINIA ELECTRIC & P0hER COMPANY NCRTH ANNA P0hER STATICh EMPOSunE PATHbAY - AIR 50RNE CCMPOSITE AIR PARTICULATE FILTERS I P CI /C L'. M i STATION NLM8ER 04 h ARES CROSSRO ADS-5.1 MI.287 DEG.

DATE CCLLECTEC 12/28-C3/29 GAPPA SPECTRUM AN ALYSIS EE-7 3. 30 *- 1. 2 0 E- C 2 R-40 L.T. 4. E-02 Ph-54 L .T . 1. E-03 CC-58 L .T . 1. E- C3 FE-59 L.T. 3. E- C 3 CC-60 L.T. 1. E- C 3 Zh-65 L .T . 3. E-03 IR-95 L.T. 1. E-C3 RU-103 L.T. 2. E- C 3 RU-106 L.T. 1. E- C 2 I-131 L.T. T. E-C3 CS-134 L.T. I. E-C3 CS-137 L.T. 1. E-C3 BA-140 L.T. 4. E-C3 CE-141 L .T. 2. E-03 CE-144 L .T . 5. E-03 RA-226 L .T . 1. E-C2 TH-228 L.T. 2. E-C3

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O O VIRGINIA ELECTRIC C PCWER COPPANY NCRTH ANNA P0bER STATI0h EXPOSURE PATHbAY - AIR 8CRNE j CCMPOSITE AIR PARTICLLATE FILTERS

. I PC I /C L'. P I l

. STATION NUMBER 05 GC00 HCPE CHURCH-4.2 MI.20 DEG.

j D*TE CCLLECTEC 12/2 E-C 3/ 29 GAPPA SPECTRUM AN ALYSIS EE-7 7.49 +- 3.12E- C 2 I

] K-40 L.T. 5. E- C 2

, Mh-54 L .T . 2. E-03 i CC-58 L.T. 2. E-03 l FE-59 L.T. 4. E-C3 l CC-60 L .T . 2. E- C 3 Zh-65 L.T. 4. E-03 ZR-15 L.T. 2. E-C3 90-103 L.T. 2. E-C3 i RU-106 L.T. 1. E- 02 I-131 L .T . E. E-C3 I. CS-134 L .T . 2. E-C3 i

! CS-137 L.T. 2. E-C3 EA-140 L.T. 4. E-C3 CE-141 L.T. 3. E-C3 CE-144 L.T. 9. E-03

RA-226 L .T. 2. E-C2 TM-228 L.T. 2. E-C3 d

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VIRGINI A ELEC TRIC & PCWER COPPAhY j NCRTH ANNA PobER STATICA EXPOSURE PATHbAY - AIRECRNE CCMPOSITE AIR PARTICLLATE FILTERS IPCI/CL. P l STATION NUMBER 05A SIURGECN'S CREEK-3.2 Pl. 11 CEG.

DATE CCLLECTEC 12/2e-C3/29 GAPPA SPECTRUM ANALYSIS BE-7 . 3. 49 *- 1. 2 6 E- C 2 l

K-40 L.T. 4. E-C2 Ph-54 L .T . 1. E-C3 CC-58 L .T . 2. E-03 FE-59 L.T. 4 E-C3 CC-60 ' 3.2 4 0- 1.30E- C 3 Zh-65 L .T . 3. E-C3 ZR-95 L.T. 2. E-C3 RU-103 L.T. 2. E-C3 J 20-106 L.T. 1. E-C2 !

i I-131 L.T. 6. E-C3 i

CS-134 L.T. 2. E-C3 i

C5-137 L.T. 1. E-C3

!84-140 L.T. 4. E-C3 l

CE-141 L.T. 2. E-C3 CE-144 L.T. 7. E-C3 <

RA-226 L.T. 2. E-C2 l Th-228 L .T . 2. E-C3 '

l l

l Note: This composite of filters from Station 05A was counted a second time on a different detector. The filters were put in a new envelope prior to l

counting. The second analysis had a Co-60 result of 3.86 +-1.53 C-03 pCi/Cu.M.

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VIRGINIA ELECTRIC C PChER COPPANY hCRTH ANNA PubER STATI0t.

. EXPOSURE PATHbAY - AIR 8CRNE COMPOSITE AIR PARTICLLATE FILTERS IPCI/CU. P 1 STATICh h0M8ER 06 LEVY-4.7 MI .115 DE G.

CITE CCLLECTEC 12/ 28-C3/ 29

G*P2A SPECTRUM AN ALYS IS

! BE-7 4.13 +- 1.3 2 E- C 2

K-40 L.T. 4. E-02 Ph-54 L .T . 1. E-C3 i CC-58 L .T . 2. E-C3 <

FE-59 L.T. 4. E-C3 CC-60 L .T . 2. E-C3 4

Zh-65 L.T. 4. E-C3 ZR-95 L.T. 2. E-C3 i RU-103 L.T. 2. E- C 3

! RU-106 L.T. 1. E-C2 i I-131 L.T. 7. E-C3 CS-134 L.T. 2. E-C3 l CS-13T L.T. 2. E- C 3 i 8A-140 L.T. 5. E-C3 4 CE-141 L .T . 2. E-C3 4

CE-144 L.T. 7. E-C3 I RA-226 L.T. 2. E-C2 TP-228 L .T. 2. E- C 3 1

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%IRGINIA ELECTRIC E POWER COPPAhY hCRTH ANNA P0bER STATIOh i EXPOSLRE PATHWAV - AIR 8CRNE i

COMPOSITE AIR PARTICULATE FILTERS

IPCI/CU. P l STATION NUMBER 07 SLMPASS-T.3 MI.167 DEG.

DATE CCLLECTEC 12/22-C3/29 i GAPPA SPECTRUM AN ALYS IS EE-7 3. l e +- 1.C 8 E- C 2 I

! K-40 L .T . 4. E-C2 1

Ph-54 L .T . 1. E-C3 CC-58 L.T. 1. E-C3

FE-59 L.T. 4. E- C 3

, CC-60 L.T. 1. E-C3

Zh-65 L.T. 3. E-C3 1 28-95 L.T. 2. E-C3

} BU-103 L.T. 2. E-C3 90-106 L.T. 1. E-C2 l I-131 L.T. 6. E-C3 i

CS-134 L.T. 1. E-C3 CS-137 L.T. 1. E-C3

) BA-140 L.T. 6. E-C3 j CE-141 L.T. 2. E-C3 CE-144 L.T. f. E-C3

) RA-226 L.T. 1. E-C2 1 TF-228 L.T. 1. E-C3 e i

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VIRGINI A ELECTRIC C P0hER COPPAhY 1 NCRTH. ANNA P0hER STATI0h -

li EMPOSURE PATHWAY - AIRBCRhE CCMPOSITE AIR PARTICULATE FILTERS

IPC1/CU. M i

$TATICN NUMBER. 21 j ROUTE 485-1.C MI.3 01 CEG.

i l

l DATE CCLLECTEC 12/28-C3/29 I

j GAPPA SPECTRUM AN ALYS IS

) 8E-7 3. 61 +- 2. 8 2 E- C 2 f K-4C L .T . 4. E-C2 i Mk-54 L.T. 1. E-C3 I

CC-58 L.T. 1. E- C 3 1 FE-59 L.T. 4. E-C3 CC-6C L.T. 2. E-C3 Zh-65 L.T. 4. E-C3 i ZR-95 L.T. 2. E-C3

} pu-103 L.T. 2. E-C3

RU-106 L.T. 1. . E-02 i I-131 L .T . 8. E-C3 i CS-134 L.T. 2. E- C 3 j CS-137 L.T. 1. E-C3 i BA-14C L.T. 6. E-C3 l CE-141 L.T. 3. E-C3 i CE-144 L .T . E. E- C 3 i RA-226 L .T. 2. E-C2 i

TF-228 L.T. 2. E-C3 I

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O O O VIRGINIA ELECTRIC $ P0hER COMPANY NCRTH ANNA P0hER STATI0h

EXPOSURE PATHbAY - AIRBCRNE CCMPOSITE AIR PARTICULATE FILTERS IPCI/CU. N- I STATICN NLMBER 22 RCUTE 100-1.C MI.242 DEG.

i DATE CCLLECTEC 12/28-03/29 i

GAPP A SPECTpuM AN ALYSIS BE-7 3.14+-1.8CE-C2

. K-4C L.T. 3. E-C2 l MN-54 L.T. 1. E- C 3 CC-58 L.T. 1. E-C3 FE-59 L .T . 3. E-C3

, CC-6C L.T. 1. E-C3

, ZN-65 L .T. 3. E-C3 29-95 L.T. 3. E-C3 i RU-1C3 L.T. 1. E-03

2U-1C6 L .T . 8. E-C3 J I-131 L .T . 5. E- C 3 1 CS-134 L .T . 1. E-C3 i CS-137 L.T. 9. E-04 !

) EA-140 L.T. 4. E-C3 4 CE-141 L .T. 2. E- C 3 I CE-144 L .T . 6. E-C3 4 RA-226 L .T . 3. E-C2 1 Tb-228 L .T . 1. E-C3 2

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4 VIRGINIA ELECTRIC E POWER COMPANY NORTH ANNA P0hER STATICA EXPOSURE PATHbAY - AIRBCRNE CCMPOSITE AIR PARTICULATE FILTERS IPCI/CU. M i STATICN NLM8ER 23 ASPEN HILLS-0.9 MI.158 CEG.

CATE CCLLECTEC 12/28-03/29 GAPPA SPEC'auM AN ALYS!$

EE-7 l'

4. C 7 *- 1.4 0 E- C 2 K-4C 3.03*-1.31E-C2

'. Ph-54 L.T. 1. E- C 3 l CC-58 L .T . 1. E-C3 FE-59 L .T . 3. E-C3

, C0-60 L .T . 1. E- C 3

Zh-65 L.T. 3. E-C3 ZR-95 L .T . 2. E-03

! RU-1C3 L .T . 2. E-C3

? RU-106 L.T. 1. E- C 2 I-131 L.T. E. E- C 3 1 CS-134 L.T. 1. E-C3 l CS-137 L.T. 2. E-C3

EA-140 L.T. 5. E-C3

! CE-141 L .T. 2. E-C3 i CE-144 L.T. e. E-03 1 RA-226 L.T. 2. E-C2 l TH-228 L.T. 2. E-C3 i

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O O O VIRGINIA ELECTRIC & PChER COMPANY hCRTH ANNA P0hER STATI0h EXPOSURE PA1HbAY - AIR 8CRNE CCMPOSITE AIR PARTICL' LATE FILTERS I PCI /CL'. P I STATIDN NLM8ER 24 CRANGE-22.C MI.325 DEG. ICONTROLI CATE CCLLECTEC 12/28-C3/29 GAPPA SPECTRUM AN AL YS IS I'

BE-7 L .T . 2. E-C2

K-40 L.T. 5. E- C 2 Ph-54 L .T . 2. E-C3 CC-58 L .T . 2. E-C3 FE-59 L.T. 5. E-C3 CC-60 L .T . 2. E- C 3 Zh-65 L.T. 4. E-C3 ZR-95 L .T . 2. E-C3 Ru-103 L.T. 2. E-C3 RU-106 L.T. 1. E-C2 I-131 L .T . S. E-C3 CS-134 L.T. 2. E-C3 CS-137 L.T. 1. E-C3 8A-140 L.T. f. E-C3 CE-141 L.T. 3. E-C3 CE-144 L.T. 9. E-C3 RA-226 L.T. 2. E-C2 TH-228 L.T. 2. E-C3 U

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' WM N : VIRGINIA ELECTRIC and POWER COMPANY' NORTH ANNA' POWER STATION EXPOSURE PATHWAY--' AIRBORNE' WATER - PRECIPITATION (PCI/ LITER)'

. . STATION NUMBER 01 DNSITE-0.2 MI.42 DEG

-DATE COLLECTED 01/01/-01/31 02/01-02/28 03/01-03/31 RDI0 CHEMICAL ANALYSIS GR-B 1.6 +-0.6 E 00 6.3 +-1.0 E 00 1.5 +-0.9 E 00 GR-B 7.5 +-0.7 E-02 5.6 +-0.6 E-01 2.0 +-0.2 E-Oli Deposition

.nci/Sq.M.

Rainfall 1.85 '3.71 5.34 in inches P

W

t O O O W1BENDE N . VIRGINIA ELECTRIC AND POWER COMPANY

! NORTH ANNA POWER STATION 4

EXPOSURE PATHWAY-AMBIENT GAPMA RADIATION TLD L'

.millirens/

( quarter) .

,l I .

SAMPLE STATION FIRST QUARTER SECOND QUARTER THIRD QUARTER FOURTH QUARTER mR/ year NUCLIDE NUMBER 12/30/82-03/31/83 i TLD 01 17.7t0.4

GAMA l~ RADIATION 02 ll.8t0.6 1

. 03 11.710.3 I

{

04 13.920.3 l 05 15.820.7 l

1 05A 15.4t0.2

! 06 18.4t0.1 07 14.3t0.2 .

. 21 14.3t0.2 22 20.4.10.2 H

! 23 20.0t0.4 CONTROL 24 10.3t0.2 L TLD ALL 15.3t3.3 mR/91 days GAMA MEAN i .0.17t0.04 mR/ day f, RADIATION 1 SIGMA H = HIGHEST l L = LOWEST i

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O .O O VIRGINIA ELECTRIC C PChER COMPANY hCRTH AhNA P0hER STATIch EMPCSURE PATHbAY - HATER 80RNE WALER - SLRFACE I PCI /LI TE R I STATICN NLPBER 08 DISCHAPGE LAGCONS-1.1 MI.148 DEG.

CaTE CCLLECTEC 01/14 02/16 03/15 RADICCHEPICAL ANALYSIS I

I-131 L .T . 3. E-C1 L.T. 2. E-01 L.T. 3. E-01 GLPPA SPECTSUM AN ALYS IS BE-7 L.T. 4. E C1 L.T. 6. E 01 L.T. 5. E C1 K-4C L.T. 9. E C1 L.T. 2. E 02 L.T. 9. E 01 Mh-54 L.T. 4. E CC L.T. 6. E 00 L.T. 5. E CC CC-58 L.T. 5. E CC L.T. 7. E 00 L.T. 5. E CC FE-59 L.T. S. E CC L.I. 1. E 01 L.T. 1. E C1 CC-6C L.T. 4. E CC L.T. 6. E C0 L.T. 5. E CC ZN-65 L.T. 9. E CC L.T. 1. E 01 L.T. 9. E CC 29-95 L.T. 5. E CC L.T. 7. E 00 L.T. 5. E CC 90-103 L .T . f. E CC L.T. 7. E 00 L.T. 6. E CC RU-1C6 L .T . 4. E C1 L.T. 6. E 01 L.T. 5. E 01 1-131 L.T. 2. E C1 L.T. 2. E 01 L.T. 2. E 01 CS-134 L.T. 5. E CC L.T. 7. E C0 L.T. 5. E CC CS-137 L .T . 5. E CC L.T. 7. E 00 L.T. 5. E CC BA-14C L .T . 1. E C1 L.T. 1. E 01 L.T. 1. E 01 CE-141 L.T. 1. E C1 L.T. 2. E 01 L.T. 1. E 01 CE-144 L.T. 4. E C1 L.T. 6. E 01 L.T. 4. E 01 BA-226 L.T. S. E C1 L.T. 2. E 02 .L.T. 1. E C2 TF-228 L .T . 8. E CC L.T. 1. E 01 L.T. 1. E 01 TDITIUP AAALYSIS QUARTERLY COMPOSITE (01/14 03/15)

F-3 2.43+-C.20E 03 b

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. VIRGINIA ELECTRIC E POWER COPPAhY NCRTH ANNA PChER STATIch EEPOSLRE PATHbAY - bATER8CRNE bATER - SLRFACE IPCI/ LITER I STATION NUMBER 09 LAKE AhNA. - UPS-2.2 MI . 320 DEG. ICCNTRCLI CATE CCLLECTEC C1/14 02/16 03/15 BADICCHEMICAL AN ALYSIS T

I-131 L.T. 2. E-C1 L.T. 3. E-01 L.T. 4.' E-C1 GAPPA SPECTRUP AN ALYS IS EE-7 L.T. 6. E C1 L.T. 6. E 01 L.T. 6. E 01 K-40 L .T . 1. E C2 L.T. 1. E 02 L.T. 2. E C2 Mh-54 L.T. 6. E CC L.T. 6. E C0 L.T. 6. E OC CC-58 L.T. 7. E CC L.T. 6. E 00 L.T. 7. E 00 FE-59 L .T . 1. E C1 L.T. 1. E 01 L.T. 2. E 01 CC-60 L.T. d. E CC L.T. 6. E 00 L.T. 6. E CC Zh-65 L.T. 1. E 01 L.T. 1. E 01 L.T. 1. E 01 ZR-95 L.T. 7. E CC L.T. 7. E 00 L.T. 7. E OC 30-103 L .T . 8. E CC L.T. 8. E 00 L.T. 7. E OC 3U-106 L.T. 5. E C1 L.T. 5. E 01 L.T. 6. E C1 I-131 L .T . 2. E C1 L.T. 2. E 01 L.T. 2. E 01 CS-134 L .T . 7. E CC L.T. 7. E 00 L.T.- 7. E 00 CS-137 L .T . 4. E CC L.T. 6. E 00 L.T. 7. E OC

, BA-140 L.T. 1. E C1 L.T. 1. E 01 L.T. 1. E 01

. CE-141 L .T . 2. E C1 L.T. 1. E 01 L.T. 2. E C1

! CE-144 L .T . 6. E C1 L.T. 5. E C1 L.T. 6. E 01 RA-226 L.T. 1. E C2 L.T. 1. E 02 L.T. 2. E 02 TH-228 L.T. 3. E C1 L.T. 1. E 01 L.T. 1. E 01 j TRITIUP ANALYSIS QUARTERLY COMPOSITE (01/14-03/15) i l H-3 1.87+-C.18E 03 1

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O O O VIRGINIA ELECTRIC E P0hER COPPAhY NCRTH ANNA P0bER STATIOh STATE OF VIRGINIA EXPOSLRE PATHhAY - bATERBCRNE DEPT OF HEALTH / SPLIT VEPCU HATER - SLRFACE (PCI/ LITER I STATICN NUM8ER CATE CCLLECTEC 01/21 01/21 02/18 02/18 RADICCEEMICAL ANALYSIS GR-E 2.8 +- C . 9 E C C 3.0 +-0.9 E 00 2.8 +-0.7 E 00 4. 0 + -0. 8 E C C 3

GAPPA SPECTRUM AN ALYS IS BE-7 L .T . 4. E C1 L.T. 5. E 01 L.T. 4. E 01 L.T. 6. E 01 K-4C L.T. 1. E C2 L.T. 9. E 01 L.T. 7. E 01 L.T. 2. E 02 MN-54 L .T. 5. E CC L.T. 4. E 00 L.T. 4. E 00 L.T. 6. E CC CC-58 L.T. 6. E CC L.T. 5. E 00 L.T. 4. E CO L.T. 6. E CC FE-59 L.T. 1. E C1 L.T. 1. E 01 L.T. 9. E 00 L.T. 1. E 01 CD-6C L .T . 6. E CC L.T. 5. E 00 L.T. 5. E 00 L.T. 6. E CC ZN-65 L.T. 1. E C1 L.T. 1. E 01 L.T. 9. E 00 L.T. 1. E C1 ZR-95 L .T . 6. E CC L.T. 5. E 00 L.T. 5. E CO L.T. 7. E OC RD-1C3 L.T. 7. E CC L. T. 6. E 00 L.T. 5. E 00 L.T. 7. E 00 RU-106 L.T. 5. E C1 L.T. 4. E 01 L.T. 4. E 01 L.T. 6. E 01 I-131 L.T. 2. E C1 L.T. -2. E 01 L.T. 1. E 01 L.T. 2. E C1 CS-134 L .T . 6. E CC L.T. 5. E 00 L.T. 4. E 00 L.T. 7. E OC CS-137 L.T. 4. E CC L. T. 5. E 00 L.T. 5. E 00 L.T. 7. E OC BA-140 L.T. 1. E C1 L.T. 1. E 01 L.T. 8. E 00 L.T. 1. E C1 CE-141 L.T. 1. E C1 L.T. 1. E 01 L.T. 8. E CO L.T. 1. E C1 CE-144 L .T . 5. E Cl L.T. 4. E 01 L.T. 3. E 01 L.T. 5. E 01 RA-226 L.T. 1. E C2 L.T. 1. E 02 L.T. 8. E 01 L.T. 1. - E 0 2 TM-228 L.T. 1. E C1 L.T. 1. E 01 L .T . 7. E 00 L.T. 1. E C1 TRITIUP AhALYSIS H-3 2.1S+-C.18E C3 2.62+-C.24E 03 1 88 +-0.17 E 03 2.32+-0.20E 03 W-26 W-33 W-26 W-33 7

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-VIRGINIA ELECTRIC-and. POWER COMPANY- STATE OF VIRGINIA i

NORTH ANNA: POWER' STATION . DEPT OF HEALTH / SPLIT VEPCO. ~-3

' EXPOSURE PATHWAY - WATERBORNE WATER - SURFACE.

(PCI/ LITER)

STATION NUMBER DATE COLLECTED' 03/0R 03/0R RADI0 CHEMICAL ANALYSIS GR-8 2.6 +-1.4 E 00 L.T. 1. E 00

.; GAMMA SPECTRUM ANALYSIS BE-7 L.T. 6. E 01 L.T. 8. E 01

K-40 L.T. 6. E:01 L.T. 9. E 01- l MN-54 L.T. 4. E-00 L.T. 5. - E 00 i CO L.T. -5. E 00 L.T. -7. E 00 ;

.FE-59 L.T. fl. E 01 L.T. 2. E 01 l CO-60 L.T. 4. E 00 L.T. 5. E 00 l ZN-65 L.T. 8. E 00. L.T. 1. E 01 j ZR-95 L.T. 6. E 00- L.T. 7. E 00 RU-103 L.T. 8. E 00 L.T. 1. E 01 RU-106 L.T. 4. E 01 L.T. 5. E 01 1-131 L.T. 3. E 02 L.T. 4 E 02 I L.T. 5. E 00 CS-134 L.T. 4. E 00

, CS-137 L.T. 4. E 00 L.T. 5. E 00 l BA-140 L.T. '5. E 01 L.T. 8. E 01 CE-141 L.T. 2. E Ol' L.T. 3. E 01

, CE-144 L.T. 3. E 01 L.T. 5. E 01

-RA-226 L.T. '8. E 01 L.T. 1. E 02 ,

TH-228 L.T. 9. E 00 L.T. 1. E 01 i TRITIUM ANALYSIS ,

H-3 2.'36+-0.14 E 03 1.45+-0.10E 03 .

1 W-33 W-26 l

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4' VIRGINI A ELECTRIC C P0btR CCPPANY NCRTH ANNA POWER STATICh i E3P05URE PATHbAY - WATERBORNE

} WATER - RIVER (PCI/ LITER I

! $TATICN NLMBER 11

. hCR TH AhNA R,00hMS-5.8 Pl.128 DEG.

l I

CATE CCLLECTEC 03/15 GAPPA SPECTPUM AN ALYS IS

BE-7 L.T. 6. E C1

K-4C L.T. 1. E C2 MN-54 L.T. f. E CC CC-58 L.T. E. E CC FE-59 L .T . 1. E C1 CC-6C L.T. 4. E CC

] ZN-65 L.T. 1. E C1

28-95 L.T. 7. E CC B0-1C3 L .T .

7. E CC l Ru-1C6 L .T . 5. E C1 j I-131 L .T . 2. E C1 j CS-134 L .T . 7. E CC i CS-137 L.T. 6. E CC

? BA-14C L .T . 1. E C1 CE-141 L.T. 1. E C1 CE-144 L.T. 5. E C1 DA-226 L .T . 1. E C2

,' Tb-228 L.T. 1. E C1 1

! TRITIUM ANALYSIS i

{ h-3 2 .12 +- C .17 E C 2 i

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. NORTH ANNA POWER.. STATION j

. EXPOSURE PATHWAY.- WATERBORNE-'

WATER - GROUND '

(PCI/NUMBER

' STATION LITER) .. OlA i

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! DATE COLLECTE0-- 03/31 i

GAMMA SPECTRUM ANALYSIS i

i

'8E-7 L.T. 9. E 01-K-40 L.T. 2. E 02 l MN-54 ~ L.T. 8. E 00

! CO-58 L.T. 9. E 00 FE-59 L.T. 2. E:01

CO-60 L.T. 9. E o00

. ZN-65 L.T. 2. E 01 l 2R-95 L.T. 1. E 01 RU-103. L.T. l.. E 01 RU-106 L.T. 8. .E 01 1-131 L.T. 2. E 01 CS-134 L.T. 1. E 01

CS-137 L.T. 1. E 01 8A-140 L.T. 2. E 01 i CE-141 L.T. 2. E 01

? CE-144 L.T. 8. E 01 RA-226 L.T. 2. E 02 TM-228 L.T. 2. E-01 j.. TRITIUM ANALYSIS l H-3 L.T. 9.0 .E 01 a

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O (::) O WIRGINIA ELECTRIC $ PChER COMPAhY ACRTH ANNA P0bER STATich EXPOSURE PATHbAY.- AQLATIC SEDI PE N T / 5IL T IPCI/GP DRY I STATION NLMBER 08 DISCHARGE L AGC0h5-1.1 M I.148 DEG.

CATE CCLLECTEC 03/15 GAPPA SPECTRUM AN AL Y S IS EE-7 L.T. 3. E-C1 '

K-4C 3.7C +- C .4 4 E C C Ph-54 L .T . 2. E-C2 CC-58 L.T. 3. E-C2 FE-59 L.T. d. E-C2 CC-60 6 11+-2.2CE-C2 Zh-65 L .T . 6. E-C2 28-95 L .T . 3. E-C2 pu-IC3 L.T. 3. E-C2 8u-1C6 L.T. 2. E- C 1 1-131 L.T. 1. E-C1 CS-134 L .T . 3. E-C2 C5-137 1. 6 7 +-C .3 3 E- C 1 EA-140 L.T. 1. E-C2 CE-141 L.T. 4. E-C2 CE-144 L .T . 1. E-C1 '

RA-226 8.00+-3.96E-C1 TH-228 4. 5 2 +- C .4 5 E- C 1 t

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o O O VIRGINIA ELECTRIC C PCWER COPPAhY hCRTH ANNA P0bER STATIOk EXPOSLRE PATHbAY - AQLATIC SEDIMENT / SILT (PCI/GP DRV I STATION NUMBER 09 LAKE AhMA, LPS-2.2 MI. 320 DEG. (C ONTRCL I CATE CCLLECTEC 03/15 GAPPA SPECTRUM AN ALYSIS BE-7 L.T. 2. E-C1 l K-40 4.23 +-C.42E C C Ph-54 L .T . 2. E-C2 CC-58 L .T . 2. E-C2 FE-59 L.T. 4. E-C2 CC-60 L.T. 2. E-C2 Zh-65 L.T. 4. E-C2 2p-S5 L.T. 2. E-C2 90-103 L.T. 2. E-C2 RU-106 L .T . 2. E-C1 I-131 L.T. 7. E-C2 CS-134 L.T. 2. E-C2 CS-137 L.T. 2. E-C2 BA-140 L.T. 6. E-C2 C5-14' L.T. 3. E-C2 Cf-144 L.T. 1. E-C1 SA-226 7. 8 8 *- 2. 9 9 E- C 1 TH-228 L.T. 4. E- C2 ue i

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O' O O WIRGINI A ELECTRIC C PChER COPPAhY NCRTH ANNA P0hER STATI0h EXPOSURE PATHWAY - AQUATIC SEDIMENT / SILT IPCI/GP DRY I STA TION NUMBER 11 NCRTH ANNA R,DCbNS-5.8 Pl.128 DEG.

DATE CCLLECTEC 03/15 GtPPA SPECTRUM AN ALY S IS EE-T L .T . 4. E- C 1 K-4C 1.97+-C.2CE C1 Ph-54 L .T . 3. E-C2 CC-58 L .T . 4. E-C2 FE-59 L.T. 9. E-C2 CC-60 1.C 1 +- C . 2 9 E- C 1 Zh-65 L.T. 8. E-C2 ZR-95 L.T. 4. E-C2 8U-103 L.T. 4. E- C 2 .80-106 L.T. 3. E-C1 1-131 L.T. 2. E-C1 CS-134 L .T . 4. E-C2 CS-13T 2. 3 2 +-0.2 7 E- C 1 EA-140 L.T. E. E- C 2 CE-141 L .T . 8. E-C2 CE-144 L.T. 2. E-CI RA-226 1.10+-0.14E CC TM-228 1.21 +-C.13E C C 1

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DATE CCLLECTEC 03/15-C3/15 GAPPA SPECTRLM AN ALYSIS EE-7 L.T. 2. E-C1 g K-4C 4.51+-C.45E CC MM-54 L.T. 2. E-C2 CC-58 L .T . 2. E-C2 FE-59 L.T. 4. E-C2 CG-60 L.T. 2. E- C 2 ZN-65 L.T. 4. E-C2 Zs-95 L .T . 2. E-C2 pu-1C3 L .T . 2. E-C2 pu-106 L.T. 1. E- C1 1-131 L.T. E. E-C2 CS-134 L.T. 2. E-C2 CS-137 4.91+-1.33E-C2 EA-140 L.T. 5. E-C2 CE-141 L .T . 3. E-C2 CE-144 L.T. I. E-C1 RA-226 5.22+-C.64E-C1 TH-228 .2.43+-0.24E-C1 O

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vlRGINIA ELECTRIC E PChfR COPPAhY hCRTH ANNA P0hER STATICA EaP050pE PATHbAY - INGESTICN N ILR I PCI /L I TE R I STATION NLMBER 12 HCLLADAY DAIRY-8.3 MI.310 DEG.

DCTE CCLLECTEC 01/2C C2 /17 03/17 CACICCHEPICAL ANALYSIS E-C1 E-01

I-131 L.T. 4. L.T. 3. L.T. 5. E-01 GAPPA SPECTRUM AN ALYS IS BE-7 L .T . 5. E C1 L. T. 5. E 01 L.T. 5. E 01 R-4C 1.49+-0 15E C2 1.2 0*-C.12E 03 1.26+-0.13E 03 MN-54 L.T. e. E CC L.T. 5. E 00 L.T. 5. E 00 CC-58 L.T. 4. E CC L.T. 5. E 00 L.T. 5. E CD FE-59 L .T . 1. E C1 L. T. 1. E 01 L.T. 1. E 01 CC-6C L.T. 7. E CC L.T. 5. E 00 L.T. 6. E 00 #

Zh-65 L.T. 2. E C1 L.T. 1. E 01 L .T . 1. E 01 25-95 L.T. 7. E CC L.T. 6. E 00 L.T. 5. E C0 90-1C3 L .T . 7. E CC L.T. 6. E CO L.T. 6. E C0 Ru-1C6 L.T. e. E C1 L.T. 5. E 01 L.T. 5. E 01 I-131 L .T . 1. E C1 L.T. 1. E 01 L.T. 2. E 01 C5-134 L.T. 7. E CC L.T. 6. E 00 L.T. 5. E CO '

CS-137 L.T. 7. E CC L.T. 6. E CO L.T. 5. E CD EA-14C L.T. 2. E C1 L.T. 7. E 00 L.T. 9. E 00 CE-141 L.T. 1. E C1 L.T. 1. E 01 L.T. 1. E 01 CE-144 -L.T. I. E C1 L.T. 5. E 01 L.T. 4. E 01 RA-226 L.T. 5. E C1 L.T. 1. E C2 L.T. 1. E 02 TM-228 L.T. 1. E C2 L.T. 1. E 01 L.T. 9. E 00

RADIOCHEMICAL ANALYS' QUARTERLY COMPOSITE (01/20-03/I7) ,

SR-89 L.T. 6. E 00 SR-90 2.4 +-0.5 E 00 0

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DaTE CCLLECTEC 01/20 02/17 03/ 17 i RADICCbEMICAL AN ALYSIS I

1-131 L .T. 5. E-C1 L.T. 4. E-01 L.T. 5. E-01 j GAPP A SPECTauM AN ALYSIS i EE-7 L.T. 4. E C1 L.T. 4. E 01 L.T. 6. E 01 K-40 1.14+-C.11E C3 1.2 6+-0.13E 03 1 15+-0.12E 03 MN-54 L.T. 5. E CC L.T. 4. E 00 L.T. 6. E 00 i CC-58 L.T. 5. E CC. L.T. 5. E 00 L.T. 7. E 00

) FE-59 L .T . 1. E C1 L.T. 1. E 01 L.T. 2. E 01 1 CC-60 L.T. 5. E CC L.T. 5. E 00 L.T. 7. E 00 i ZN-65 L.T. 1. E C1 L.T. 1. E 01 L.T. 1. E 01 1

Z8-95 L.T. 5. E CC L.T. 5. E 00 L.T. 7. E 00 i 90-103 L .T . 5. E CC L.T. 6. E 00 L.T. 7. E 00

! RU-1C6 L.T. 4. E C1 L. T. 4. E 01 L.T. 6. E 01

, I-131 L.T. 1. E C1 L.T. 9. E 00 L.T. 2. E 01 l

C5-134 L.T. 5. E CC L.T. 5. E 00 L.T. 7. E 00 CS-137 L.T. 5. E CC L.T. 6. E 00 L.T. 7. E 00 BA-14C L .T . T. E CC L. T. 7. E 00 L.T. 1. E 01 CE-141 L.T. 1. E C1 L.T. 7. E 00 L.T. 2. E 01 CE-144 L .T. 4. E C1 L.T. 3. E 01 L.T. 6. E 01 1 RA-226 L.T. 1. E C2 L.T. 9. E 01 L.T. 2. E 02 TF-228 L.T. 9. E CC L. T. 8. E 00 L.T. 1. E 01 RADIOCliEMICAL ANALYSIS QUARTERLY COMPOSITE (01/20-03/17) i SR-89 L.T. 8. E 00 SR-90 4.1 +-0.6 E 00 I.

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O O O VIRGINI A ELECTRIC C P0bER CCMPAhY NCRTH AhNA P0bER STATICA l EEPCSURE PATHbAY - INGESTION

, M ILK i IPCI/ LITER 3 STATICN NLM8ER 14A i COTE CCLLECTEC C1/2C C2 /17 03/17

! SADICCNEMICAL AN ALY S IS I-131 L.T. 3. E-C1 L.T. 3. E-01 L.T. 5. E-01 g, GfPPA SPEC 1RLM AN ALYS IS EE-7 L.T. 4. E C1 L.T. 6. E 01 L .Y . 6. E 01

} K-4C 1.12 +-C.12E C 3 1 5C+-0.15E 03 1-,49+-0.13E 03 Mh-54 L.T. 5. E CC L.T. 6. E 00 L.T. 6. E 00 CC-58 L .T . 5. E CC L.T. 6. E C0 L.T. 6. E 00 j FE-59 L .T . 1. E C1 L.T. 1. E 01 L.T. 2. E 01

CC-6C L .T . 5. E CC L.T. 6. E 00 L.T. 7. E 00 l Zh-65 L.T. 1. E C1 L.T. 1. E 01 L.T. 1. E 01 ZR-55 L .T . 5. E CC L.T. 6. E CO L.T. 7. E 00 SU-IC3 L.T. 5. E CC L.T. 7. E 00 L .T . 7. E 00 BU-1C6 L.T. 4. E C1 L.T. 5. E 01 L.T. 6. E 01 I-131 L .T . 9. E CC L.T. 1. E 01 L.T. 2. E 01 l CS-134 L .T . 5. E CC L.T. 7. E 00 L.T. 7. E 00

CS-137 L .T . 5. E CC L.T. 7. E 00 L.T. F. E 00 i EA-140 L .T . 7. E CC L.T. 1. E 01 L.T. 1. E 01 i

CE-141 L .T . 1. E C1 L.T. 1. E 01 L.T. 2. E 01 CE-144 L .T . 4 E C1 L.T. 5. E 01 L.T. 5. E 01 I RA-226 L.T. I. E C2 L.T. 1. E 02 L.T. 1. E 02

! TF-228 L .T . E. E CC -L.T. 1. E 01 L.T. 1 E 01 i

l RADIOCHEMICAL ANALYSIS QUARTERLY COMPOSITE (01/20-03/17) 4 SR-89 L.T. 8. E 00 1 SR-90 1.3 +-0.6 E 00 i.

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.SECOND QUARTER 1983 1

MARCH 29, 1983 - ' JUNE 30, 1983 i

i DISCUSSION OF RESULTS

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WM TABLE OF CONTENTS SECOND QUARTER 1983 PAGE

SUMMARY

AND DISCUSSION OF RESULTS LIST OF TABLES 111 LIST OF FIGURES iii EXCEPTIONS AND SPECIAL EVENTS 18 AIRBORNE EXPOSURE PATHWAY 2B DIRECT EXPOSURE PATHWAY 8B WATERBORNE EXPOSURE PATHWAY 11B AQUATIC EXPOSURE PATHWAY 18B INGESTION EXPOSURE PATHWAY 198 CONCLUSIONS 238 APPENDIX A A-1 Complete Data by Sample Type, Station and Collection Dates APPENDIX B B-1 Complete Data by Sample Type, Station and Collection Dates O

11

T ISOTOPES LIST OF FIGURES

-O PAGE FIGURE 3 Air Exposure - Gross Bela and Ce-144 (1977- ) 3B FIGURE 4 Direct Exposure - Environmentai TLD (1977- ) 98 FIGURE 5 Water Exposure - Tritium (1977 ) 13B FIGURE 6 Ingestion Exposure - Sr-90 (1977 ) 208 LIST OF TABLES TABLE 4 Remp Summary - Airborne Exposure AB

_ O TAeLE 5 Rem, Semmerv - oirect Expeeer. 20B TABLE 6 Remp Summary - Waterborne Exposure 14B TABLE 7 Remp Summary - Ingestion Exposure 218 O

111

T TELEENPE

] EXCEPTIONS AND SPECIAL EVENTS SECOND QUARTER 198A (MARCH 30, 1983 -- JUNE 30, 1983)

EXCEPTIONS All required samples were collected and analyzed in accordance with the VEPC0 radiological environmental monitoring program (REMP) for the second quarter 1983.

. SPECIAL EVENTS During the second quarter of 1983 no unusual events occurred that could

! be interpreted as effecting the environment in the vicinity of the North Anna Power Station.

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T TELEDV9F.

C AIRBORNE EXPOSURE PATHWAY (MARCH 29, 1983 -- JUNE 28, 1983)

AIR PARTICULATE FILTERS (STATIONS 1, 2, 3, 4, 5, 5A, 6, 7, 21, 22, 23, 24)

Air particulate filters were collected weekly in the second quarter of 1983 and measured for gross beta activity. The average gross beta activity for the month of April was 0.019 pC1/Cu.M.;.in May it was 0.021 pC1/Cu.

M. and in June it was 0.025 pCi/Cu. M. The gross beta activity is shown on the graph in Figure 3 on the following page. The activity has returned to i normal environmental levels from the average'high of 0.30 pCi/Cu. M. in April of 1981 following the Chinese atmospheric nuclear tests of October 1980. Concurrent with the low gross beta activity the Ce-144 activity is below the limits of detection. The average gross beta activity of all stations is not significantly different from the control station number 24, Orange, 22 miles, 325 degrees NW of the reactor.

The air particulate filters were composited for the second quarter for each station and analyzed on the gamma spectrometer. The naturally occurring cosmogen9 nuclide Be-7 was detected in 12 of 12 samples at normal environmental leve's. There was one detection of K-40 at control station 24.

Since 'these are naturally occurring nuclides there is no indication of an effect on the air pathway from the operations of the North Anna Power Station.

n The air particulate composites for the second quarter were analyzed for the U fission products strontium-89 and -90. There was one detection of Sr-90 at 0.024 pC1/Cu.M. at Station 21, Route 685,1.0 miles 301 degrees WNW. This was a very low level of activity and was probably due to fall out from previous atom bomb testing.

AIR RADI0 IODINE (STATIONS 1,2,3,4,5,5A,6,7,21,22,23,24)

No.1-131 was detected in the weekly charcoal cartridges collected in the second quarter in the vicinity of NAPS indicating that no detectable airborne releases of I-131 occurred.

PRECIPITATION (STATION 01)

Rain water was collected monthly at station 01, on site, 0.2 miles, 42 degrees NE and analyzed for gross beta activity. The average beta activity for the second quarter of 1983 was 4.1 pCi/ liter. The resulting deposition was 0.46 nanoCi/Sq. M. This is the nominal environmental level for rain water and shows no indication of an effect due to the operations of NAPS. A com-posite of the samples for the first six months was prepared and analyzed for gamma emitting isotopes and tritium. There were no detections of gamma emitting isotopes and tritium was at a normal environmental level.

S0lt(STATIONS 1,2,3,4,5,5A,6,7,21,22,23,24)

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Soil samples were collected in 1980 and are scheduled to be collected in the third quarter of 1983.

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i AIRBORNE EXPOSURE PATHWAY -

AIR PARTICULATE FILTERS i MONTHLY AVERAGE OF GROSS BETA -

QUARTERLY AVERAGE OF CE-144 i

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TABLE 4 RADIOLOGICAL ENVIRONMENIAL MCNI TC9t NG PRCGRAM SUPPARY

- PATHb4Y- AIRBORhE COMP IL ATION - QUAR TERLY

SUMMARY

VIRGINI A ELECTRIC C POWER CONPANY 54 COLE - AIR PARTICULATE FILTERS C3NTROL - ORANGE-22.C MI.325 DEG.Ah~ NORTH ANNA POWER ST AT ION LNIIS - PCI /CU. M ANA LYSI S NO LIMIT CF ALL INCICATOR S AMPLES L3 CATION WI TH HIGHE ST PE AN CONTROL LOCAT ION NON REPORTING PERIDO DET ECT ION MEAN X E-00 .

PE AN N E-00 MEAN X E-03 R OUT IN E PEAN X E-03 RANGE STATI31 FRAC TION R A NGE RANGE FR ACT I CN STATIGN DE SCRIPTI Ch FRACTION

==- -____=- -- --

GR-8 168 0.0075 0.021 0.024 0.019 0 03/29/83-06/28/83 0.018 -

0.024 03 012/012 C.Cli - 0.041 0.011 - 0.029 7 156/156 MINER AL-T.1 MI .243 CEG. 012/012 54-89 12 0.0033 LT 0.0060 LT 0.0030 0 03/29/83-C6/28/83 LT 0.0030 -LT 0.0060 LT 0.00 30 -LT 0.0030 000/012 000/001 SR-90 12 0.00050 0.00024 0.00024 LT 0.00040 0 03/29/83-06/28/83 0.00024- 0.00024 21 OC1/CC1 C.CCO24- 0.00024 LT 0.00040-LT 0.00040 001/012 R3 UTE 685-1.0 MI.3Cl OEG. 000/001 5

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RADIOLOGICAL ENVIRONMEN TAL PCNI TCHI NG PRCGRAM SUPPARY PATHbAY- AIRBCRAE COMP ILATION - QUAR TERLY SOPMARY VIRGINI A ' ELECT R IC C POWER CONP ANY 5AMILE - CCMPOSITE AIR PARTICJL ATE FILTERS C3NTROL - ORANGE-22.C MI.325 DEG.Nb NORT H ANNA PodE9 STATION Lh! T S - PCI /CU. M chA LYSI S NO LIMIT CF ALL INCICATOR S AMPLES LDCA TION WI TH HIGHE ST FE AN CCNTROL LCCAT ION NON- R EP3RT I4G PER IOD DETECTICN MEAN E E-00 PE AN x E-00 PEAN X E-03 ROUT IN E PEAh X E-03 R AN GE STA TION FRAC TION R A h3E RANGE FR ACT ION STA TION DE!CRIPTI ON FRACTICN

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CE-7 12 0.0120 0.0760 C.111- 0.0567 0 03/29/83-06/28/83 3.0563 - 0.111 03 CC1/001 C.111 -

0.111 0.0567 - 0.0567 012/012 MINER AL-7.1 MI.2 4 3 DEG. 001/001-E-4C 12 0.0310 0.0435 0.0435 0.0435 0 03/29/83-06/28/83 0.0435 - 0.0435 24 CC1/C01 C.C435 - 0.0435 3.3435 - 0.0435 001/012 ORANGE-22.0 MI.325 DEG.ICCNTRCLI 001/001 I-131 12 0.00120 LT 0.0 300 LT 0.0300 0 03/29/83-06/28/83 LT 0.0100 -LT 0.0300 LT 0.3303 -LT 0.0300 000/012 000/001 C5-137 12 0.00120 LT 0.00300 LT 0.00300 0 03/29/83-06/28/83 '

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TABLE 4 RADIOL 3GICAL ENVIRONMEN TAL PCNI TCRING PMCGRAF SUPMARY POTHbAY- AI RBOR AE - COMP IL A TION - QUAR TERLY SLPMARY. VIRGINI A ELECTRIC C POWER COMPANY SAEPLE - kATER - PRECIPIT ATION CONTROL - NORTH ANN 4 P0d ER ST AT ION ,

Lh! TS - PCI/ LITER AhA LYSI S NO LIPIT CF ALL INDICATOR S AMPLES LOCATION hl TH HIGHE ST PE AN CONTRCL LDCAT ION NON- REP 3RTING PERIOD DET ECT ION MEAN K E-00 MEAN x E-00 MEAN X E-03 ROUT INE PEAN X E-03 RANGE STATION FRAC TION R A NGE RANGE FRACTION STA TION DE SCRIP TIch FRACTICN

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Composite 290. 290.

H-3 1 290. - 290. 01 290 - 290 ONSITE-0.2 MI.42.DEG. 0 01/01/83-06/30/83 Canos 1 ALL NUCLIDES Spectrum LESS THAN MINIMUM LEVEL OF DETECTION O 01/01/83-06/30/83 Analysis

MM DIRECT EXPOSURE PATHWAY

(]

V (MARCH 31, 1983 -- JUNE 30, 1983)

ENVIRONMENTAL GAMMA DOSE - THERM 0 LUMINESCENT 00SIMETERS (STATIONS 1, 2, 3, 4, 5, 5A, 6, 7, 21, 22, 23, 24)

The average gamma environmental dose as measured by thermoluminescent dosimeters at twelve stations in the vicinity of the North Anna Power Station during the second quarter of 1983 was 0.19 mr/ day. The range of the environ-mental dose was 0.15 to 0.24 mr/ day. The highest dose was 0.24 mr/ day at station 22, Route 700,1.0 miles 242 degrees WSW. The lowest dose was 0.15 mr/ day at station 24, which is the control station, Orange at 22 miles, 325 degrees, NW.

Figure 4 shows the plot of the average dose levels monitored, which indicates no significant change in the level of the direct exposure pathway since 1977 due to the operation of the North Anna Power Station. This is less than the estimated whole body dose per quarter due to natural terrestrial and cosmic radiation and internal dosage from natural radionuclides. Table 5 summarizes the average activity of all indicator stations, the location with the highest mean and the activity of the control station 24.

Following Table 5 is a tabulation of the gamma dose as measured by n thermoluminescent dosimeters exposed at all twelve stations for the year V from June 30, 1982 to June 30, 1983. The average total dose of all stations was 70.3 i 13.4 mR per year. The highest dose was 90.6 mR at station 22, Route 700, 0.1 mile, 242 degrees. The lowest dose was 52.3 mR at station 24, Orange, 22 miles, 325 degrees. The average dose was 0.19 i 0.04 mR/ day which is similar to the average dose per day as determined on a quarterly basis.

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, RADIOLOGICAL ENVIRONENTAL MONITORING PROGRAM

SUMMARY

PATHWAY - DIRECT EXPOSURE COMPILATION - QUARTERLY

SUMMARY

VIRGINIA ELECTRIC and POWER COMPANY i' . SAMPLE - TLD ENVIRONMENTAL BADGES CONTROL - ORANGE-22.0 MI.325 DEG. NW NORTH ANNA POWER STATION UNITS . ar/ day STATION 24 ANALYSIS NO LIMIT OF ALL INDICATOR SAMLES LOCATION WITH HIGHEST MEAN CONTROL LOCATION NON- REPORTING PERIOD a DETECTION MAN X E-00 E AN X E-00 E AN X E-00 ROUTINE M AN X E-00 RANGE STATION FRACTION RANGE RANGE FRACTION STATION DESCRIPTION FRACTION GAMA 12 0.05 0.19 0.24 0.15 0 03/3'l/83-06/30/83 DOSE 0.15 - 0.24 22 012/012 Route 700 - 1.0 MI. 242 DEG WSW 001/001.

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O WATERBORNE EXPOSURE PATHWAY (MARCH 30, 1983 -- JUNE 30, 1983)

SURFACEWATER(STATIONS 08,09)

Surface water was collected monthly at two stations and analyzed for radioiodine and gansna emitting nuclides. At station 08, the discharge lagoon, I-131 was detected at a level of 0.65 pCi/ liter in samples collected April

14. Samples collected on May 9 at the same location showed I-131 levels of 0.7 pC1/ liter and a sample collected May 18 showed a level of 4.7 pCi/ liter. On June 14 the level was again below the minimum level of detection of 0.5 pCi/ liter. No I-131 was detected at station 09 Lake Anna, 2.2 miles upstream, 32 degrees NW. The quarterly composite of surface water at station 08 showed a strontium 90 level of 1.4 pCi/ liter. The minimum detection level is 1.0 pC1/ liter. This may be due to f allout from previous nuclear testing which is found in v,egetation and soil under certain meteorological conditions.

The level of tritium activity at station 08, the discharge lagoon, was 2770 pCi/ liter as compared with 2430 pCi/ liter during the first quarter.

Figure 5 illustrates the trend of tritium activity at station 08 from 1977 through the second quarter of 1983. The tritium activity at station 09 at Lake Anna, 2.2 miles upstream, 320 degrees NW, was 1720 pCi/ liter. This level of tritium is significant since it is upstream of the plant; however, it appears to be decreasing.

RIVERWATER(STATION 11)

A quarterly sample of river water was analyzed for strontium 89 and 90, for tritium and gamma emitting nuclides. There were no detections of the fission products strontium 89 and 90. Tritium activity at Station 11, North Anna River, 5.8 miles down stream, was 1920 pCi/ liter. This compares' with 2430 pCi/ liter in the first quarter and is below the maximum allowable concen-tration for tritium. No iodine-131 nor gamma emitters were detected sug-gesting that the effluent releases consisted primarily of tritium.

GROUNDWATER (STATION 01A)

Ground water from the environmental well on site, collected and analyzed quarterly, contained no gamma emitters and the tritium activity was at a normal environmental level. The second quarter sample was analyzed for the fission products strontium 89 and 90, which were below the levels of detec- J tion. This indicates no adverse effects due to the operations of NAPS.

SAMPLES FROM THE VIRGINIA STATE DEPARTMENT OF HEALTH SURFACEWATER(STATIONSW-26,W-33) i l

Surface water samples were received monthly from the Virginia State Department of Health, Bureau of Radiation Safety. Three samples were received from station W-26, the 208 Bridge and three from W-33 NAPS Discharge. They Q'v were analyzed for gross beta, gamma emitters and tritium. There were no 11B

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gamma emitters above the minimum level of detection. The gross beta results ]

were at a nominal environmental level. The average tritium activity level at W-26, the 208 Bridge, was 1942 pCi/ liter. The average level at W-33 was 2760 -

pCi/ liter. These averages are based on the analyses of'four samples from each location. A monthly composite sample for June from Station W-19 showed a tritium level'of 530 pCi/ liter and a composite sample for June from station 4 W-79 showed a level of 330 pCi/ liter, j O

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TABLE 6-RADIOLOGICAL ENVIRONMEN TAL PONI TORI NG PROGRAP SUPPARY PATHNAY- WATERBCRNE COMP IL ATION - QLAR TERLY SLPMARY- VIRGINI A ELECTRIC C POWER COMP ANY SAPFLE - WATER - SURFACE CONTROL - LAKE ANNA LPS-2.2 MI .12 0 DE G. NW NORTH AhNA PDdER STATIDN UNIIS - PCI/ LITER 4

AN A LYSI S NC LIMIT CF ALL INDICATOR S AMPLES LOC A TION WI TH HIGHE ST PE AN CONTROL LOCAT ION NON- REPORTING PERIOD DETECT ION MEAN X E-00. MEAN N E-00 MEAN X E-00 ROUTINE PEAN X E-00 RANGE STATION FRAC TION RANGE RANGE

FRACTION STATION DE SCRIPTI ON _FRACTICN I

T BY RADI0 CHEMICAL SEPARATION I-131 8 1.6 1.6 LT 0.30 0 04/14/83-06/14/83

{ 1.6 -

1.6 08 004/005 C. 6 5 -

4.7 LT 0.20 -LT 0.30 304/008 DI SC HAR GE L A GOON S- 1.1 M I .14 8 DE G. 000/003 l

1 SR-89 2 LT 10. LT 10. 0 04/14/83-06/14/83 LT 7.0 -LT 10. LT 10. -LT 10 .

000/002 000/001 i

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1.4 08 001/C01 1.4 -

1.4 LT 0.90 -LT 0.90 001/002 DISCHARGE L AG00NS-1.1 Pl .148 DEG. 000/001 1

] I-131 8 LT 20. LT 40.0 BY GAMMA SPECTROSCOPY 0 04/14/83-06/14/83 i 'LT 10. -LT 20, LT 10.0 -LT 40.0 j 000/008 000/003 I

1 CS-137 8 LT 8.00 LT 8.00 0 04/14/83-06/14/83 LT 7.00 -LT 8.00 LT 4.00 -LT 8.00 i j 000/008 000/003

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' TABLE 6 R AD IOLO G I CAL ENVIRONMEN T AL MONI TORI N3 PREGRAM SUPPARY s

, PATHkAY- WATERBCRNE COMP IL ATION - QUAR TERLY SLPFARY' VIRGINI A ELECTRIC C POWER COMPANY SAMPLE - WATER - RIVER CONTROL - L AKE ANNA,LPS-2.2 Mt. 320 DEG. NW NORTH ANNA P0d ER ST AT ION LNITS - PCI/ LITER ANA L YSI S NO LIMIT CF ALL INCICATOR S AMPLES LOCATION hiiH HIGHE ST FE AN . CCNTROL LOC AT ION NON- REPORTING PERIOD DETECTION MEAN E E-00 PE A N X E-00 MEAN X E-03 ROUT INE .

PEAN X E-03 RANGE STATION FRAC TION RANGE RANGE FRACTION STA TION DE SCRIPTI ON F R ACT I CN

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000/001 1-131 1 LT 20.0 0 06/14/83-06/14/83 LT 20.0 20.0 000/001 i

CS-137 1 LT 5.00 0 06/14/83-06/14/83 LT 5 00 -LT 5.00 300/001 4

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_ _ _ _ ____ __----- ____= =- =- - --

I-1 31 1 10.0 LT 30.0 . STATION 1A, ONSITE O 06/30/83-06/30/83 LT 30.0 -LT 30.0 .0.2 MI. 42 DEC. NE 000/001 .

C S-13T - 1 9.00 LT 6.0 0 06/30/83-06/30/83 LT 6.0 -LT 6.0 000/001 H-3 1 100. LT 220.0 0 06/30/83-06/30/83

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000/001

- SR-89 1 S.0 LT 3.00 0 06/30/83-06/30/83 LT 3.00 -LT 3.00 000/001 i

l SR-90 1 1.0 LT 0.8 0 06/30/83-06/30/83 i LT 0.8 -LT 0.8

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TABLE 6 STATE'0F VIRGINIA DEPARTMENT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

OF HEALTH / SPLIT VEPC0 PATHWAY - WATERBORNE COMPILATION - QUARTERLY

SUMMARY

SAMPLE - WATER - SURFACE. VIRGINIA ELECTRIC'and' POWER COMPANY

' CONTROL - LAKE ANNA,UPS-2.2 MI. 320_0EG. NW NORTH ANNA POWER STATION UNITS . PCI/ LITER.

ANALYSIS. NO LIMIT-OF ALL INDICATORESAMPLES LOCATION WITH. HIGHEST MEAN CONTROL LOCATION NON- REPORTING PERIOD DETECTION MEAN X E-00 '_ MEAN X E-00 MEAN X E-00 ROUTINE MEAN X E-00 RANGE STATION FRACTION- RANGE' -RANGE FRACTION STATION 0ESCRIPTION FRACTION GR-B' 8 3.1 3.1.

3.1 3.1 W-26 1.6 0 04/01/83-06/04/83 4.6 006/008 208 Bridge 003/004 3.1 0 04/01/83-06/04/83 W-33 1.7 .

4.0 NAPS Discharge 003/004 I-131 8 500.0 LT 20.0 -LT 500 0 04/01/83-06/04/83 000/008 CS-137 8 LT 6.0 LT 3.00 -LT 6.0 0 04/01/83-06/04/83 000/006 H-3 8 2350. 2800, 1940. -

2800. W-33 004/004 2340. 3980 0 04/01/83-06/04/83 004/004 NAPS Discharge G

=

T TELEDVNE AQUATIC EXPOSURE PATHWAY (March 30, 1983 -- June 30, 1983)

SEDIMENT / SILT (STATION 08,09,11)

Sediment and silt samples are collected semiannually and analyzed for gamma emitting nuclides. They are analyzed for strontium-89 and strontium-90 annually. Sediment / silt samples were collected in the first quarter; there-fore none were collected for the second quarter.

SH0 RELINE S0Il (STATION 09)

Shoreline soil is also collected semiannually and analyzed for gamma emitting nuclides. A sample was collected during the first quarter and it was not necessary to collect a sample in the second quarter.

O 1

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l 0

18B

T TELEDYNE ISOTOPES INGESTION PATHWAY

() (APRIL 14, 1983 -- JUNE 13, 1983)

MILK (STATIONS 12,13,14A)

Milk samples were collected monthly from the above stations. They were analyzed by radiochemical separation for I-131 and all results were below the minimum level of detection of 0.5 pCi/ liter. A gamma analysis showed no gamma emitters above the minimum level of detection except K-40, the natural ter-restrial nuclide which was at the normal environmental level.

A quarterly composite was prepared for the three stations and the average Sr-90 activity level was 3.3 pCi/A as compared with 2.6 pCi/A for the first quarter of 1983. These results indicate that no detectable NAPS releases occurred that adversely affected milk samples.

FISH (STATIONS 08, 09)

Fish samples were collected from 08 and 09 and analyzed for gamma

-emitting nuclides on the spectrometer. Both samples contained the naturally occurring nuclide K-40. Both samples contained also the fission product Cs-137. Cs-134, also a fission product, was detected in the sample collected O at station 08, the discharge lagoon,1.1 miles,148 degrees SSE, at slightly above the minimum level.of detection.

TERRESTRIAL VEGETATION (STATION 21, 23)

There were no collections of vegetation in the second quarter of 1983.

Samples will be collected from stations 21 and 23 in the third quarter at harvest time. .

O 19B

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Q' TABLE 7 RADIOLOGICAL ENVIRONMENTAL MCNI TORING PRCGRAM SUPMARY

$ PA THhAY- I NGESTI ON COMP IL ATION - QUAR TERLY SUPMA RY VIRGINI A ELECTRIC E POWER COMPANY SAMPLE - M I LK CONTROL.- NORTH ANN A PodER ST AT ION LNI TS ' - PCI/ LITER I ANA LYSI S NO LI MI T CF ALL INCICATOR S AMPLES LOCATION hlIH HIGHE ST PEAN CCNTRCL LOCAT ION NON- REPORTING PERIOD DETECT ION MEAN X E-00 MEAN X E-00 MEAN X E-00 ROUT INE PEAN X E-00 R AN G E STATION FRAC TION R A NGE . RANGE FRACTICN STA TION DE SCRIP TI ON . FRACTION 1

l I I-131 9 0.50 LT 0.50- 0 04/14/83-06/13/83 l LT 0.30 -LT 0.50 BY RADIOCllEMICAL SEPARATION i 000/009 i S3-89 3 LT 7.0 0 05/12/83-06/13/83

LT 6.0 -LT 7.0 q 000/003 I SR-90 3 0.80 3.3 4.4 0 05/12/83-06/13/83 2.7- -

4.4 14A OC1/CC1 4.4 -

4.4 003/003 COLVIN DAIRY-8.0 MI.310 DEG. NW i

K-40 9 200. 1250. 1350. 0 04/14/83-06/13/83 1170. -

1350. 14A 003/CC3 125C. -1440.

l 009/009 COLVIN DAIRY-8.0 MI. 310 DEG. NW I-131 9 0.500 LT 20.0 LT 10.0 -LT 20.0 0 04/14/83-06/13/83 BY GAMMA SPECTROSCOPY 000/009 C S-13 7 9 3.00 LT 60.0 0 04/14/83-06/13/83 LT 7.00 -LT 60.0 000/009 1

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TABLE 7 RADIOLOGICAL E1VIRONMEN TAL PONI ICRI NG PRCGRAM SUPPARY

- PATHWAY- I NGESTI ON COMP IL ATION - QUAR TERLY SLPMARY VIRGINI A ELECTRIC C POWER COMPAMY SAMPLE - F I SH CONTROL - L AKE ANNA LPS-2.2MI NORT H ANNA POWER ST AT IO1 LNI TS ' - PCI/GP WET ANA LYSI S NO LIMIT CF ALL INDICATOR S AMPLES LOCATION WI TH HIGHEST ME AN CONTROL LOCAT ION NON- REPORTING PERIOD DETECTION NEAN X E-00 NEAN X E-00 MEAN X E-00 ROUTINE PEAN X E-03 RANGE STA TION FRAC TION R A NGE RANGE FR ACT I ON . STA TION DE SCRIPTI ON FRACTION

=............... .............. . .. .. . ...... -

K-4C 2 0.500 1.87 1.87 1.87 0 05/10/83-05/10/83 1.87 -

1.87 08 001/C01 1.87 -

1. 8 7 -- 1.87 -

1.87 002/002 DISCHARGE L AG00NS-1.1 Pl .14 8 DEG. 001/001 1.87 09 CC1/CCI 1.87 -

1.87 LAKE ANNA, UP S-2.2 Pl . 320 DEG. ICON I-131 2 0.0300 LT 0.0400 LT 0.0200 0 05/10/83-05/10/83 LT 0.0200 -LT 0.0400 LT 0.0203 -LT 0.0200 000/002' 000/001 s

, CS-134 2 0.0200 0.0403 0.0403 LT 0.00803 0 05/10/83-CS/10/83 O.0403 - 0.0403 08 001/CC1 C.0403 - 0.0403 LT 0.00800-LT 0.00800 l' 001/002 OI SCHARGE L A G00NS-1 1 FI .148 CEG. 000/001 i

i l CS-137 2 0.0200 0.0972 0.142 0.0524 0 05/10/83-05/10/83

0.0524 - 0.142 06 0C1/CC1 C.142 - 0.142 0.0524 - 0.0524 1 002/002 OI SCHARGE L AG00N S-1.1 MI .148 DE G. 001/031 i

=

4

Y C0N 29 983 . UNE 30, 1982)

The results of the radiological environmental monitoring program conduct-ed in the vicinity of the North Anna Power Station show that r.o measurable releases from the operations of the nuclear reactor were detected above the prescribed limits of detection.

Increasing levels of tritium activity have been monitored since the start of operations in 1978 of unit 1 of NAPS. The tritium activity at the discharge cooling (station 08) is now 2770 pC1/ liter compared to 100-200 pCi/

liter during the preoperational period.

In addition the tritium activity at Lake Anna, upstream 2.2 miles (station 09) has increased from 160 pCi/ liter in the first quarter of 1980 to 1720 pCi/ liter during the second quarter of 1983.

The tritium activity in the North Anna Power River downstream 5.8 miles (station 11) increased from 310 pCi/ liter in the first quarter 1980 to 1920 pCi/ liter during the second quarter of 1983.

O O

23B

' TTELEDGE.

-Q s' APPENDIX B SECOND QUARTER 1983 DATA TABLES by SAMPLE. TYPE, STATION AND COLLECTION DATE G

B-1

m - _ - _ - - - - - - - - - -

O -O O VIRGIN I A ELECTR IC C P0wER COPPANY NORTH ANNA POWER STATION EXPOSURE PATHWAY - AIRBORNE AIR PARTICULATE C CHARCOAL FILTERS STAT ION NUMBER 01 ONS ITE-0.2 M I.42 DEG COLL. TIME AP F IL TER PI D-C CU NT CHARCOAL FILT ER -

START STOP GR3 5S BETA TIME I-131 DATE DATE VOLUME UNITS IPCI/CU. M ) DATE TIME IPCI/ CU. M 1 03/29 04/05 . 1.35E 02 CU. M 1.4 +-0.5 E-02' 04/13 L.T. 2. E-02 04/05 04/12 1.32E 02 CU . M 1.5 +-0.5 E-02 04/20 L.T. 1. E-02 04/12 04/19 . 1.31E 02 CU. M 1.4 +-0.6 E-02 04/27 L.T. 1. E-02 1 04/19 04/26 1.33E 02 CU. M 1.9 +-0 6 E- 02 05/04 L.T. 8. E-03 04/26 05/03 1.32E 02 CU. M 2. 2 +-0.6 E- 02 05/11 L.T. 1. E-02 05/03 05/10 1.32E 02 CU. M 2.3 +-0.6 E-02 05/18 L.T. 2. E-02 05/10 05/17 1.33E 02 CU. M 2. 2 +-0.6 E- 02 05/26 L.T. 1. E-02 05/17 05/24 1.32E 02 CU. M 2.3 +-0.5 E-02 06/03 L.T. 2. E-02 05/24 05/31 1.33E 02 CU. 4 3.0 +-0.6 E-02 06/08 L.T. 7. E-03 05/31 06/07 1.32E 02 CU. M 2.0 +-0.6 E- 02 06/14 L.T. 1. E-02 06/07 06/14 1.37E 02 CU. M 3.0 +-0.6 E-02 06/23- L.T. 1. E-02 06/14 06/21 1.33E 02 CU . M 4.1 +-0.7 E- 02 07/01 L.T. 8. E-03 06/21 06/28 1 34E 02 CU. M 2. 7 +-0.6 E-02 07/12 L.T. 2. E-02

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VIRGIM I A ELECTR IC C POhER COPPANY

' NORTH' ANNA POWER STATION EXPOSURE PATHWAY - AIRBORNE COMPOS ITE AIR P AR TICLLA TE F ILTERS

-(PCI/CU. M i-STATIDM NUMBER C1 OMS I TE-0.2 M t.42 DEG DATE CCLLECTED . 0 3/ 29-06/ 2tl GAPPA SPECTRUP ANALYS IS BE-F 8.0 3 +-2.06 E-0 2 K-40 L.T. 5. E-02 PN-54 L.T. 2. E-03 CO-58 L.T. 2. E-03 F E -59 L.T. 5. E 00-60 L .T . 2. E-03 ZN-65 L.T. 4. E-03 ZR-95 L.T.. 2. E-03 RU-103 L.T . . 2. E-03 RU-106 L.T. 2. E-02 I-131 L.T. 2. E-02 CS-134 L.T. 2. E-03 CS-13T L.T. 2. E-03 BA-140 L.T. 8. E-03 CE-141 L.T. 3. E-03 CE-144 L.T. 9. E-03 RA-226 L.T. 2. E TH-2 2 8 L.T. 2. E -0 3 RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (03/29-06/28)

SR-89 L.T. 4 E-03 SR-90 L.T. 3. E-04

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O b O V IRGIN I A ELECTR IC C POWER COMPANY NORTH. ANNA POWER STATION EXPOSURE PATHWAY - AIRBORNE AIR PARTICUL ATE C CHARCOAL' FI L TERS STAT IO4 NUMBER 02 FREDER ICKS HALL-5.3 M t . 225 DEG.

COLL. TIME A7 F IL TER FID-CCUNT CH ARCO AL FILT ER START STOP GROSS BETA TIPE l-131 DATE D AT E VOLUME. UNITS (PCI/CU. M I DATE TIME (PCI/ CU. M i 03/29 04/05 1.38E 02 Cal . M 1.6 +-0.6 E-C2 04/13 L.T. 1. E 04/05 04/12 1.36E 02 CU. M 1.8 +-0.5 E-02 04/20 L.T. 1. E-02.

04/12 04/19 1.38E 02 CU. M 1.1 +-0.6 E- 02 04/2 7 L.T. 1. E-02 4 04/19 04/26 1.39E 02 CU. M 1.8 +-0.5 E-02 05/04 L.T. 6. E-03 04/26 05/03 1.38E 02 CU . M 2.3 +-0.6 E-02 05/11 L.T. 1. E-02 05/03 05/10 1.38E 02 CU . M 2.2 +-0.6 E-02 05/18 L.T. 2. E-02 05/10 05/17 1.38E 02 CU. H 1.6 +-0.5 E- 02 05/26 L.T. 1. E-02 05/17 05/24 1.36E 02 CU. M 2.2 +-1.5 E-02 06/03 L.T. 2. E-02 05/24 05/31 1.38E 02 CU . M 1.6 +-0.5 E-02 06/08 L.T. 1. E-02 05/31 06/07 1.37E 02 CU. M 2.3 +-0.6 E-02 06/14 L.T. 9. E-03 06/07 06/14 1.37E 02 CU. M 1.6 +-0.5 E-02 06/23 L.T.' 1. E-02 06/14 06/21 1.3BE 02 CU . M 3.2 +-0.6 E-02 07/01 L.T. 8. E-03 06/21 06/28 1.37E 02 CU . M 2.8 +-0.6 E-02 07/12 L.T. 2. E-02 m

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~ V IRGIN I A ELECTR IC C P0hER COMPANY 43RTH ANNA POWER ST A TION i' ~ EXPO SUR E P A TbWA Y :- AIRHORNE

' COMPOS ITE AIR P ARTICUL A TE F ILTERS IPCI/CU. M i STAT ION NUMBER C2-T FREDER ICKS . HALL-5.3 MI . 225 DEG.

3 DATE COLLECTED 33/29-06/28

- GAPPA S PEC T RU P ANALYSIS

] BE-T 7.I9+-2.02E-02 K-40 L.T. 5. E-02 i MN-54 L .T . 2. E-03

CO-58' .L.T. 2. E '

FE-59 L.T. 5. E-03 C D-60 L .T . 2. E-0 3 1 ZN-65 L .T . 4. E-03

, ZR-95 L.T. 2.' E-03 l RU-103 L.T. 2. E-03

. RU-106 L.T. 1. E-02 1 I-131 L.T. 2.- E-02 i CS-134 L.T. 2. E-03

CS-13 7 L.T. 2. E-03 l BA-140 L.T. 9. E-03 4

i CE-141 L.T.. 3. E-03 C E -144 L.T. 8. E-0 3 4

RA-226 L.T . 2. E-02 i d

TH-228 L.T. 3. E-03 i i r RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (03'?9-06/28)

SR-89 L.T. 4 E-03 I j SR-90 L.T. 4. -E-04 i

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a ~O O VIRGIM IA ELECTR IC C PohER COMPANY NORTH ANNA POWER S TA TI ON EXPOSURE PATHWAY - AIRBORNE AIR PARTICUL ATE C CHARCOAL FIL TERS STAT ION NUMBER 03 MINER AL-7.1 M I .24 3 DEG.

COLL. TIME AP FIL TER FID-COUNT CHARCO AL FILT ER START STOP GROSS RETA TIPE I-1 31 DATE DATE- VOLUME UNITS IPCI/CU. M I DATE TIME I PCI/ CU. M 1 03/29 04/05 1.40E 02 CU . M 2.1 +-0.6 E-02 04/13 L.T. 1. E-02 04/05 04/12 1.36E 02 CU. M 2.1 +-0.5 E-02 04/21 L.T. 1. E-02 04/12 04/19 1.37E 02 CU . M 2.2 +-0.6 E-02 04/27 L.T. 1. E-02

04/19 04/26 1.36E 02 CU. M 2.1 +-0.6 E- 02 05/04 L.T. 7. E-03 04/26 05/03 1.34E 02 CU . M 2.4. +-0.7 E-02 05/11 L.T. 1. E-02 05/03 05/10 1 38E 02 CU . M 2.0 +-0.6 E-02 05/18 L.T.- 2. E-02 05/10 05/17 1.41E 02 CU. M 2.7 +-0.6 E-02 05/26 L.T. 1. E-02 05/17 35/24 1.42E 02 CU. M 3.0 +-0.5 E-02 06/03 L.T. 1. E-02 05/24 05/31 1.39E 02 CU . M 1.1 +-0.5 E-02 06/08 L.T. 9. E-03 05/31 06/07 1.43E 02 CU. M 2.3 +-0.5 E-02 06/14 L.T. 8. E-02 06/07 06/14 1.44E 02 CU. M 3.0 +-0.6 E- 02 06/23 L.T. 7. E-03 06/14 06/21 1.44E 02 CU . M 4.1 +-0.6 E-02 07/01 L.T. 9. E-03 06/21 06/28 1.38E 02 CU. M 2.6 +-0.6 E-02 07/12 L.T. 1. E-02 Y

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4-4 VIRGINI A ELECTR IC E PDhER COPPANY

' . NORTH ANNA POWER STA TION

, EXPOSURE P ATHWAY - AIRBCKNE COMPOS ITE AIR PAR TICUL A TE FILIER S -

(PCI/CU. M : 1 STAT ION NUMBER C3 MIN ER AL-7.1 M I .243 DEG.

l . DATE COLLECTED 03/29-06/28 GAPPA SPECTRUP AN ALYS IS RE-7 1.11+-0.23E-01

{ K-40 L.T. 6. E-02 i MN-54 L.T. 2. E-03 j CO-58 L .T . . 2. E-03 i FE-59 L.T. 6. E-03 l CD-60 L.T. 2. E-03 l ZN-65 L.T. 4. E 2R-95 E-03 L.T. 2.

RU-103 L.T. 3. E-03 l RU-106 L.T. 1.- E-02

l-131 L.T. 2. E-02 i CS-134 L.T. 2. E-03 I

CS-137 L.T. 2. E-03 84-140 L .T . 9 E-03 f

CE-141 L.T. 4. E-03 CE-144 L.T. 1. E-02 4

R A-2 2 6 L .T . 3. E-02 TH-228 L.T. 3. E-03 4 RAD!0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (03/29-06/28) i

, SR-89 L.T. 3. E-03 i SR-90 L.T. 3. E-04 i

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AIR P ART ICUL ATE C CHARCOAL FI L TE RS ST AT ION NUMBER C4 W ARES CROSSROADS-5.1 MI .28 7 DEG.

COLL. TIME AP FIL TER FI D-COU NT CHARCOAL FILT ER START STOP GROSS RETA TI PE I-131 DATE. DATE VOLUME UNIT S IPCI/CU. M 1 DATE TIME (PCI/ CU. M )

, 03/29 04/05 1.38E 02 CU. M 1.8 +-0.6 E-02 04/13 L.T. 1. E-0 2 04/05 04/12 1.36E 02 CU . M 1. 5 +- 0.5 E- 0 2 04/20 L.T. 1. E-02 04/12 04/19 1.3FE 02 CU . M 1.5 +-0.6 E-02 04/27 L.T. 2. E-02 04/19 04/26 1.37E 02 CU. M 1.1 +-0.5 E-02 05/04. L.T. 2. E-02 04/26 05/03 1.37E 02 CU. M 2.0 +-0.6 E- 02 05/11 .L.T. 1. E-02

05/03 05/10 1.38E 02 CU. M 1.6 +-0.5 E-02 05/19 L.T. 1. E-02 l 05/10 05/17 1.39E 02 CU. M 1.4 +-0.5 E-02 05/26 L.T.- 1. E-02 05/17 05/24 1.36E 02 CU. M 2.2 +-0 5 E-02 06/03 L.T. 2. E-02 05/24 05/31 1.38E 02 CU. M- 2.0 +-0.5 E- 02 06/08 L.T. 1. E-02 05/31 06/07 1.33E 02 CU. M 1.7 +-0.5 E-02 06/14 L.T. 8. E-03

, 06/07 06/14 1.38E 02 CU. M 2.6 +-0.6 E-02 06/23 L.T. 9. E-03 06/14 06/21 1.34E 02 CU. M 3.7 +-0.6 E-02 07/01 L.T. 8. E-03

! 06/21 06/28 1.38E 02 CU. M 2.3 +-0.5 E-02 07/12 L.T. 2. E-0 2 1

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4 VIRGINIA EL ECTR IC & P0hER COMPANY NORTH ANNA POWER STATION, i EXPOSURE P ATHWAY - 4IRBORNE

. COMPOS ITE AIR P ARTICLLATE FIL TER S.

( PC I /C U. M -)

j . STAT 104 NUMBER C4 W ARES CROSSROADS-5.1 MI .28 7 DEG.

j DATE COLLECTED ~ 03/29-06/28 4

GAPMA SPECTRUM ANALYS IS j BE-7 6.43 +- 1.59 E-0 2 K-40 L .T . 2. E-02 i MN-54 L .T . 1. E-03

, C0-58 L.T. 2. E-03 FE-59 L.T. 4. E-03 CO-60 L.T. 2. E-03

ZN-65 L.T. 3. E-03 1

ZR-95 L .T . 2. E-0 3 A

RU-103 L .T . 2. E-03

, RU-106 L.T. 1. E-02 l I-131 L.T. 1. E-02 CS-134 L .T . 1. E-03 j CS-137 L.T. 2. E-03 J B A -140 L.T. 5. E-03 i CE-141 L.T. 3. E-03 CE-144 L.T. 7. E-03 '

RA-226 L.T. 2. E-02 4 TH-228 L.T. 2. E-03 2

l- RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (03/29-06/28) i SR-89 L.T. 4. E-03 l SR-90 L.T. 3. E-04 1

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V IRGIN I A ELECTRIC C PubER COMPANY NORTH ANNA POWER ST A TI ON EXPOSURE P ATHWAY - AIRBORNE AIR P ART ICUL A TE C CHARCOAL FIL TE RS .

STAT ION NUMBER C5 GOOD HOP E CHURCH-4.2 MI.20 OEG.

COLL. TIME AP FIL TER PI D-C OU NT CHARCO AL FILT ER START STOP GROSS BETA TI ME I-131 DATE DATE VOLUME UNITS (PCI/CU. M 3 DATE TIME IPCI/CU. M i 03/29 04/05 1.14E 02 Cu . M 2.2 +-0.7 E-02 04/13 L.T. 1. E-02 04/05 04/12 1.13E 02 CU . M 1.5 +-0.6 E-02 04/21 L.T. 2. E-02 04/12 04/19 1.13E 02 CU . M 2.1 +-0.8 E-02 04/27 L.T. 1. E-02

04/19 04/26 1.39E 02 CU. M 1.9 +-0.5 E-02 05/04 L.T. 1. E-02 04/26 05/03 1.38E 02 CU . M 3.0 +-0.7 E- 02 05/I1 L.T. 1. E-02 05/03 05/10 1.39E 02 CU . M 2.4 +-0.6 E-02 05/18 L.T. 2. E-02 05/10 05/17 1.40E 02 CU. M 2.0 +-0.6 E-02 05/26 L.T. 1. E-02 05/17 35/24 1.37E 02 CU. M 2.9 +-0.5 E- 02 06/03 L.T. 2. E-02 05/24 05/31 1.40E 02 CU . M 2.0 +-0.5 E-02 06/08 L.T. 9. E-03 05/31 06/07 1.38E 02 CU . M 2.0 +-0.5 E-02 06/14 L.T. 7. E-0 3 06/07 06/14 1.38E 02 CU. M 2.8 +-0.6 E-02 06/23 L.T. 1. E-02 06/14 06/21 1.39E 02 CU. M 3.4 +-0.6 E-02 07/01 L.T. 7. E-03 06/21 06/28 1.38E 02 CU. M 2.3 +-0.5 E-02 07/13 L.T. 2. E-02 Y

5

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'VIRGI4IA ELECTRIC C POWER COMPANY -

43RTH ANNA POWER STA TION EXPOSURE PATHWAY - AIRBORNE COMPOSITE AIR PAR TICULA TE F IL R S IPCI/CU. M 1 ST AT ION NUMBER C5 GOO D HOP E C HUR C H- 4. 2 M I . 20 DE G .

DA1E COLLECTED 03/29-06/28 GAPRA S PE CT RU P AN ALYS IS BE-7 9.09+-2.37E-02 K-40 L.T. 5. E-02 MN-54 L.T. 2.' E-03

CO-58 L.T. 3.' E-03 FE-59 L.T. 9. E-03 CO-60 L.T. 3. E-03 ZN-65 L .T . 6. E-03 2R-95 L.T. 3. E-03 RU-103 L .T . . 3. E-03 RU-106 L .T . 2. E-02 I-131 L.T.- 2. 'E-02 CS-134 L.T. 2. E-03 CS-13T L.T. 2. E-03 BA-140 'L.T. 2. E-02 CE-141 L.T. 4. E-03 C E -14 4 L.T. 1. E-02 RA-226 L .T . - 3. E-02 TH-2 2 8 L.T. 2. E-03 RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (03/29-06/28)

SR-89 L.T. 6. E-03 SR-90 L.T. 5. E 04 I

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O O O VIRGINIA ELECTRIC C P0hER COMPANY NORTH ANNA POWER STA TION EXPOSURE P ATHWAY - AIRBORNE 4

AIR PARTICULATE & CHARCOAL FILTERS STAT ION NUMBER CSA

STURGE 0N 'S CREEK- 3.2 MI . 11 DEG.

CCLL. TIME AP F IL TER PI D-C OU NT CHARCOAL FILT ER START STOP GROSS BETA TI PE - I-131 DATE DATE VOLUME UNITS IPCI/CU. M I DATE TIME IPCI/ CU. M i 4

03/29 04/05 1.35E 02 CU. M 1.5 +-0.6 E-02 04/13 L.T. 1.' E-02 04/05 04/12 1.32E 02 CU. M 1. 5 +-0.5 E- 0 2 04/21 L.T. 2. E-02 04/12 04/19 1.33E 0? CU . M 1.8 +-0.6 E-02 04/27 L.T. 1. E-02 '

04/19 04/26 1.35E 02 CU. M 1. 5 +- 0. 5 E- 02 05/04 L.T. 1. E-02

04/26 05/03 1.32E 32 CU. M 1.9 +-0.6 E-02 05/11 L.T.' 9. E-03 j 05/03 05/10 1.33E 02 CU. M 2.3 +-0.6 E-02 05/18 L.T. 2. E-02

} 05/10 05/17 1.35E 02 CU . ' M . 1.7 +-0.6 E-02 05/26 L.T. 1. E-02 05/17 05/24 1.32E 02 CU. M 2.4 +-0. 5 E- 02 06/03 L.T. 2. E-02 05/24 05/31 1.34E 02 CU . M 1.5 +-0.5 E-02 06/08 L.T. 1. E-02 05/31 06/07 1.33E 02 CU . M 2.1 +-0.6 E-02 06/14 L.T. 9. E-03 06/07 06/14 1.34E 32 CU. M 2.7 +-0.6 E-02 06/23 L.T. 1. E-02 06/14 06/21 1.34E 02 CU. M 2.3 +-0.6 E-02 07/03 L.T. 2. E-02 06/21 06/29 1.34E 02 CU. M 2.6 +-0.6 E-02 07/13 L.T. 2. E-02 1

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ST AT ION NUMBER . CSA STURGEUN'S CREEK-3.2 NI. 11 DEG.

DA TE COLLECTED 03/29-06/28 GAPPA SPECTRUP AN ALYS IS BE-7 6.23+-1.97E-02 K-40 L.T. 3. E-02 PN-54 L.T. 2. E-03. 1 CO-5 8 ' L.T. 2. E-03 ,

FE-59 L.T. 5. E-03 CD-60 L.T. 2. E-03 ZN-65 L.T. 3. E -0 3 2R-95 L .T . 2. E-03 RU-103 L.T. 2. E-03 RU-106 L.T. 1. E-02 I-131 L .T . 2. E-02 CS-134 L.T. 2. E-03 CS-137 L.T. 2. E-03 BA-140 L.T. '7. E-03 CE-141 L.T . 3. E-03 CE-144 L.T. 7. E-03 ,

R A-2 2 6 L.T. 2. E-02 TH-2 2 8 L .T . 2. E-03 RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (03/29-06/28) ,

SR-89 L.T. 4. E-03 SR-90 L.T. 4. E-04

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CCLL. TIME AP F IL TER PID-COUNT CHARCOAL FILT ER -

START STOP GROSS BETA ~

TIME I-131 DATE D4TE VOLUME UNITS IPCI/CU. M 3 DATE TIME I PC I/ CJ. M I 03/29 04/05 1.38E 02 CU . M 2.7 +-0.6 C-02 04/13 L.T. 2. E-02 04/05 04/12 1.36E 02 CU. M 1.8 +-0.5 E-02. 04 /2 1 L.T. 1. E-02 04/12 04/19 1.21E 02 CU. M 1.3 +-0.7 E-n2 04/27 L.T. 1. E-02 7' 04/19 04/26 1.10E 02 CU. M 2.5 +-0.7 E-02 05/04 L.T. 2. E-02 04/26 05/03 1.11 E 0 2 CU. M 2.4 +-0.8 E-02 05/12 L.T. 3. E-03 05/03 05/10 1. 38 E 0 2 CU. M 2.3 +-0.6 E-02 05/18 L.T. 2. E-02 05/10 05/17 1.38E 02 CU . M 2.4 +-0.6 E-02 05/26 L.T. 1. E-02 05/17 05/24 1.32E 02 CU. M 3.1 +-0.6 E-02 06/03 L.T. 1. E-02 05/24 05/31 1.36E 02 CU . M 1.8 +-0.5 E-02 06/08 L.T. 6. E-03 05/31 06/07 1.37E 02 CU . M 1.9 +-0.5 E- 02 06/14 L.T. 7. E 06/07 06/14 1.36E 02 CU. 4 2.1 +-0.6 E-02 06/23 L.T. 1. E-02 06/14 06/21 1.37E 02 CU. M 2.5 +-0.6 E- 02 07/03 L.T. 2. E-02 06/21 06/28 1.36E 02 CU. M 2.7 +-0.7 E-02 07/14 L.T. 2. E-0 2 Y

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- I PCI/CU. M i

' STATIO4 4 UMBER C6-L EVY-4.7 M I .115 DEG.

DATE CCLLECTED 03/29-06/28

! GAPFA SPECTRUP AN ALYS IS BE-7 5.77+-1.80E-02 K-40 L.T. 4. E-02 MN-54 L.T. 2. E-03 T'l '

CO-58 L.T. 2. E-03 .

I F E -59 L.T. 5. E-0 3 j CO-60 L .T . 2. E-03 1 ZN-65 L.T. 3. E-03 ZR-95 L.T. 2. E-03

. RU-103 L.T . 2. E-03 i' RU-106 L.T. 1. E-02 I-131 L.T. 2. E-02

, C S-134 L.T. 2. E-0 3 1 CS-137 L .T . 1. E-03 BA-140 L.T. 7. E-03 i

C E -141 L.T. 3. E-0 3 CE-144 L.T. 8. E-03 i RA-226 L.T. 2. E-02 i

TH-22 8 L .T . . 2. E-03 I

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, BUMP AS S- 7. 3 M I .167 DEG.

COLL. TIME AP F IL TER PID-COUNT CHARCOAL FILT ER START STOP GROSS BETA TIPE I-131 DATE DATE VOLUME UNIT S ' IPCI/CU. M 1 OATE TIME (PCI/ CU. M l 03/29 04/05 1.33E 02 01. M 1.9 +-0.6 E-02 04/13 L.T. 2. E-02 04/05 04/12 1.31E 02 CU. M 1.9 < +-0.5 E- 0 2 04/21 L.T. 1. E-02

, 04/12 04/19 1.31E 02 CU. M 2.2'+-0.7 E-02 04/27 L.T. 2. E-02 ,

1-4 04/19 04/26 1.34E 02 CU. M 2.4 +-0.6 E-02 05/04 L.T. 1. E-02 04/26 35/03 1.31E 02 CU. M 3.1 +-0.7 E-02 05/12 L.T. 9. E-03 05/03 05/10 1.32E 02 CU. M 1.6 +-0.6 E-02 05/19 L.T. 2. E-02 05/10 05/17 1.33E 02 CU. M 1.8 +-0.6 E-02 05/26 L.T. 1. E-02 05/17 05/24 1.30E 02 CU. M 2.7 +-0.5 E-02 06/03 L.T. 1. E-02 05/24 05/31 133E 02 CU. M' 2.0 +-0.5 E-02 06/09 L.T. 1. E-02 05/31 06/07 1.32E 02 CU. M 2.1 +-0.6 E-02 06/14 L.T. 5. E-03

06/07 06/14 1.32E 02 CU. M 2.9 +-0.6 E-02 06/23 L.T. 6. E-03 06/14 06/21 1.32E 02 CU. M 2.2 +-0.6 E-02 07/03 L.T. 1. E-02 06/21 06/28 1.32E 02 CU. M 2.4 +-0.6 E-02 07/13 L.T. 2. E-02 l

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.N3RTH ANNA POWER STATION EXPOSURE PATHWAY - AIRBORNE COMPOSITE AIR PAR TICULA TE FILTER S IPCI/CU. M 't ST AT ION NUMBER . C 7 BUMP AS S-7. 3 M I .167 DEG.

D ATE CCLLECTED 03/29-06/28 GAPPA S PEC T RU P ANALYSIS BE-7 1.08+-0.22E-01 K-40 L.T. 5. E-02 MN-54 L.T. 2. E-03 "5 C0-58 L.T. 2. E-03 -

FE-59 L.T. 6. E-03 C O-60 L.T. 2. E-03 ZN-65 L.T . 4. E-03 2R-95 L.T. 2. E-03 RU-103 L.T. 3. E-03 RU-106 L.T. 2. E-02 I-131 L.T. 2. E-02 CS-134 L.T. 2. E-03 CS-137 L .T . 2. E-03 8A-140 L.T. 1. E-02 CE-141 L.T. 4. E-03 CE-144 L.T. 9. E-03 RA-226 L.T . .3. E-02 TH-2 2 8 L.T. 3. -E-03 RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (03/29-06/28)

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COLL. TIME AP F IL TER PI D-COUNT CHARCOAL FILT ER START STOP GROSS BETA TIPE I-131 OATE DATE VOLUME UNITS IPCI/CU. 1 1 DATE TIME IPCI/ CJ. M I 03/29 04/05 1.42E 02 CU . 1 1.7 +-0.5 E-02 04/14 L.T. 2. E-02 04/05 04/12 1.39E 02 CU. M 1. 7 + - 0 . 5 E- 0 2 04/21 L.T. 1. E-02 04/12 04/19 1.40E 02 CU . M 1.9 +-0.6 E-02 04/27 L.T. 1. E-02 3 04/19 04/26 1.38E 02 CU. M 1.6 +-0.5 E-02 05/04 L.T. 2. E-02 04/26 05/03 1.37E 02 CU. M 2.6 +-0.6 E-02 05/12 t.T. 8. E-03 05/03 05/10 1.41E 02 CU. M 2.1 +-0.6 E-02 05/19 L.T. 2. E-02 05/10 05/1T 1.41E 02 CU. M 1.8 +-0.5 E-02 05/26 L.T. 1. E-02 05/17 05/24 1.40E 02 CU. M 2.0 +-0.5 E- 02 06/03 L.T. 1. E-02 05/24 05/31 1.41 E 0 2 CU . M 1.8 +-0.5 E-02 06/08 L.T. 6. E-03 05/31 06/0F 1.40E 02 CU. M 1.6 +-0.5 E-02 06/14 L.T. 7. E-03 06/07 06/14 1.41E 02 CU. M 2.1 +-0.5 E-02 06/23 L.T. 8. E-03 06/14 06/21 1.41E 02 CU. M 2.4 +-0.6 E- 02 07/03 L.T. 1. E-02 06/21 06/28 1.32E 02 CU . 4 1.6 +-0.5 E- 02 07/13 L.T. 2. E-0 2

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DATE COLLECTED 03/29-06/28 GAPPA S PECT RU P AN ALYS IS BE-T 5.63+-1.83E-02 K-40 L.T. 6. E-02 PN-54 L.T. 2. E-03 ).

C O-5 8 L.T. 2. E-03 FE-59 L.T. 6. E-03 C D-60 L.T. 2. E-03 ZN-65 L.T. 5. E-0 3 ZR-95 L .T . 2. E-03 RU-103 L.T. ' 2. E-03 RU-106 L.T . 1. :-u I-131 L.T. '2. k' CS-134 L.T. 2. F-03 CS-137 L.T. 2. E-03 BA-140 L .T . 1. E-02 CE-141 L.T. 3. E-03 CE-144 L.T. 9.- E-03 R A-22 6 L.T. 2. E-02 TH-22 8 L.T. 2. E-03 RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (03/29-06/28)

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ST AT IO4 NUMBER 22 ROUT E 700- 1.0 MI.242 DEG.

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< START STOP GROSS BETA TIPE I-131 DATE DATE V OLU M E UNITS IPCI/CU. M ) DATE TIME (PCI/ CJ. ' M )

03/29 04/05 1.38E 02 CU. M 2.3 +-0.6 E-02 04/13 L.T. 2 .' E-02 1

04/05 04/12 1.37E 02 CU. M 1.0.+-0.5 E-02 04/21 L.T. 1. E-02 04/12 04/19 1.37E 02 CU. M 2.0 +-0.6 E-02 04/27 L.T. 1. E-02 l' l 04/19 04/26 1.38E 02 CU. M 1.1 +-0.5 E-02 05/04 L.T. 1. E-02 04/26 05/03 1.37E 02 CU. M 2.4 +-0.6 E-02' 05/11 L.T. 7. E-03 05/03 05/10 1.39E 02 CU. 4 2.2 +-0.6 E-02 05/19 L.T. 2. E-02 05/10 05/1T 1.38 E 02 CU . M 2.1 +-0.6 E-02 05/26 L.T. 1. E-02 2

05/17 05/24~ 1.37E 02 CU. M 2.3 +-0.5 E-02 06/03 L.T. 1. E-02 I

05/24 05/31 1.39E 02 CU. M 1.9 +-0.5 E- 02 06/09 L.T. 1. E-02

] 05/31 06/0T 1.37E 02 CU . M -2.1 +-0.5 E-02 06/14 L.T. 5. E-03 .}

i 06/07 06/14 1.38E 02 CU. M 2.6 +-0.6 E- 02 06/23 L.T. 8. E-03 1 06/14 06/21 1.38E 02 CU. M 3.0 +-0.6 E- 02 07/03 L.T. 2. E-02 06/21 06/28 1.38E 02 CU . M 2.3 +-0.5 E-02 07/12 L.T. 2. E-02 5

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IPCI/CU. M i

.STATIDM NUMBER 22 ROUTE 700- 1.0 N I.242 DEG. .

DATE CCLLECTED 03/29-06/28 GAPMA SPECTRUP. ANALYS IS -

BE-7 7.34+-2.25E-02 K-40 L.T. 6. E-02 MN-54 L.T. 2. E-03 T C0-58 L.T. 2. 'E-03 F E -5 9 L.T. 6. E-03 C0-60 L .T . 2. E-03 ZN-65 L.T. 4.. F-03 ZR-95 L.T. 2. -E-03 RU-103 L .T . 3. E-03 RU-106 L.T. 2. E-02 I-131 L.T.. 2. E-02 C S-134 L .T . 2. E-03 CS-137 L.T. 2. E-03 BA-140 L.T. 9. ;E-03 CE-141 L.T. 4. E-03 CE-144 L.T. 1. E-02 RA-226 L.T. 3. E-02 TH-228 L.T. 3. E-03 RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (03/29-06/28)

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EXPOSURE P ATHWAY - AIRBORNE AIR P AR T ICUL ATE C CHARCOAL FI L TE RS -

STAT IOM NUMBER 23 ASPEN HILL S-0.9 MI .158 OEG.

C CL L. TIPE AP F IL TER >IO-CDUNT CHARCOAL FILT ER START STCP GROSS RETA TIPE I-131 DATE DATE WOLJME UNITS IPCI/CU. M i DATE TIME I PCI/ CJ. M ' l 03/29 04/05 1.37E 02 CH . M 2. I +-0.6 E 04/13 L.T. 2. E-02 04/05 04/12 1.35E 02 CU. M 1.4 +-0.5 E-02 04/21 L.T. 2.- E-02 04/12 04/19 1.25E 02 CU. M 1. 6 +-0. 7 E-02 04/27 L.T. 1. E-02 11 04/19 04/26 1. 38 E 02 CU . M 1.5 +-0.5 E-02 05/04 L.T. 2. E-02 04/26 05/03 1.37E 02 CU. M 2.5 +-0.6 E-02 05/11 L.T. 8. E-03 05/03 05/10 1.37E 02 CU. M 2.4 +-0.t E- 02 05/19 L.T. 2. E-02 05/10 05/17 1.38E 02 CU . M 1.2 +-0.5 E-02 05/26 L.T. 1. E-02 05/17 05/24 1.35E 02 CU. M 2.4 +-0.5 E-02 06/03 L.T. 1. E-02 05/24 05/31 1.37E 32 CU. M 2.6 +-0.6 E- 02 06/09 'L.T. 1. E-02 05/31 06/07 1.37E 02 CU. M 2.0 +-0.5 E- 02 06/14 L.T. 4. E-03 06/07 06/14 1.37E 02 CU. M 1.0 +-0.6 E-02 06/23 L.T.' 1. E-02 06/14 06/21 1.37E 02 CU. M 3.4 +-0.6 E-02 07/03 L.T. 2. E-02 06/21 06/28 1.37E 32 CU . 4 2.2 +-0.5 E-02 07/12 L.T. 1. E-02

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DA TE COLLECTED 03/29-06/28 GA>MA S PEC T RUM AN ALYS IS BE-7 8.00+-1.62E-02 K-40 L.T. 2. E-02 MN-5 4 L.T. 1. E-0 3 1 C0-58 L.T . 1. E-03 FE-59 L.T. 3. E-03 C O-60 L.T. 2. E-03 ZN-65 L.T. 3. E-03 ZR-95 L.T. 2. E-03 RU-103 L.T. 2. E-03 RU-106 L.T. 1. E-02 I-131 L.T. 2. E-02 CS-134 L.T. 1. E-03 CS-137 L.T. 2. E-03 '

8A-140 L.T . 7. E-03 CE-141 L.T. 3. E-03 CE-144 . L.T. 8. E-03 RA-226 L.T. 2. E-02

, TH-228 L.T. 2. E-03 1

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OR A4GE-22.0 MI.325 DEG. ICON TROLI CCLL. TIME AP . F IL TER - PID-COUNT CHARCOAL FILTER START STOP GROSS BETA TIPE 'I-131 OATE~ DATE vr UME UNITS (PCI/CU. M i DATE TIME (PCI/ CJ. M. )

03/29 04/05 1.28E 02 CU . M 1.4 +-0.6 E-C2 04/14 L.T. 2. E-02 04/05 04/12 1.27E 02 CU. M 1.1 +-0.5 E- 02 04/21 L.T. 2. E-02 04/12 04/19 1.30 E 02 CU. M 1. 2 +-0.6 E- 02 04/27 L.T. 1. E-02 9' 04/19 04/26 1.14E 02 CU . M 2.1 +-0.6 E-02 05/04 L.T.- 9. E-03 04/26 05/03 1.23E 02 CU. M 2.6 +-0.7 E-02 05/11 L.T. 9. E-03 05/03 05/13 1.27E 02 CU . M 1.8 +-0.6 - E- 02 05/19 L.T. 2. E-02 05/10 05/17 1.23E 02 CU . M -- 2.5 +-0.6 E-02 05/26 -L.T. 1. E-02 05/17 05/24 1.27E 02 CU . M 2. 4 +-0.5 E- 02 06/03 L.T. 1. 'E-02 05/24 05/31 1.36E 02 CU. M 1. 7 +-0.5 E- 02 06/08 L.T. 1. E-02 05/31 06/07 1.24E 02 CU . M 1.4 +-0.5 E-02 06/14 L.T. 8. E-03 06/07 06/14 1.32E 02. CU. M 2.9 +-0.6 E-02 06/23 L.T. 8. E-03 06/14 06/21 1 45E 02 CU. M 1.5 +-0.5 E-02 07/04 L.T. 2. E-02 06/21 06/28 1.36E 02 CU . M 2.5 +-0.6 E-02 07/12 L.T. 2. E-02

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. COMPOS ITE AIR PAR TICLLATE FIL TER S 4

IPCI/CU. M i j STAT ION NUMRER 24 OR AN GE-22.0 MI.325 DEG. ICONTROL) i I

{ DATE COLLECTED 03/29-06/28 GAPMA SPE CTRUM AN ALYS IS i BE-T 5.67 +-2.9 F E-0 2 i

! K-40 4.35+-2.38E-02 i MN-54 L.T. 2. E-03 7~

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FE-59 L.T. 7. E-03

, .C0-60 L.T. 2. E-03 i 2N-65 L.T. 5. E-03

2 R -95 L.T. 3. E-0 3 i

RU-103 L.T. 4. E-03 j RU-106 L.T. 2. E-02 I I-131 L.T. 3. E-02

! CS-134 L.T. 2. E-03 i C S-13 7 L.T. 3. E-03 BA-140 L.T. 1. E-02 i CE-141 L.T . T. E-03

! CE-144 L.T. 2. E-02 l RA-226 L.T. 5. E-02 '

i TH-228 L.T. 4. E-03 i

RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (03/29 06/28) i SR-89 L.T. 3. E-03

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j WATER.- PRECIPITATION

! ( PC I /L ITER I i i ST AT ION NUMBER C1 015 ITE-0.7 M t .42 DEG - '

. DA TE COLLECTED 04/01-04/30 05/01-05/31 'C6/01-06/30 RADICCHEMICAL ANALYSIS GR-B L.T. 1. E 00 3.3 +-0.8 E 00' 4.9'+-0.8 E 00 GR-B L.T. 2. .E-01 3.7 + 0.4 E-01 5.4 +-0.5 E-01 nCi/Sq.M.

DEPOSITION.

.' RAINFALL 6.62 inches -4.41 inches. 4.30 inches ,

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NORTH ANNA POWER. STATION 4

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1-WATER - PRECIPITATION i'

(PCI/ LITER) t STATION.NUNBER .01.

DATE COLLECTED 01/01/83-06/30/83 GAMMA SPECTRUM ANALYSIS BE-7 L.T. 6. E 01 K-40 L.T. 6. E 01

. MN-54 L.T. 4 E 00 l CO-58 L.T. 5. E 00

', FE-59 L.T. 1. E 01 CO-60 L.T. 4 E 00 1

ZN-65 L.T. 8 E 00 I

ZR-95 L.T. 6. E 00 i RU-103 L.T. 8. E 00 RU-106 L.T. 4. E 01

1-131 L.T. 1. E 02 1 CS-134 L.T. 4 E 00

) CS-137 L.T. 4. E 00 l BA-140 L.T. 3. E 01

[ CE-141 L.T. 2. - E 01 i CE-144 L.T. 4. E 01 d

RA-226 L.T. 9. E 01

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! TRITIUM ANALYSIS 1

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VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION ,

EXPOSURE PATHWAY-AMBIENT GAMA RADIATION i ..

TLD.

(allitrems/ quarter) 1 SApFLE STATION FIRST QUARTER SECOND QUARTER THIRD QUARTER mR/ year FOURTH QUARTER

, NUCLIDE NUMBER 12/30/82-03/31/83 03/31/83-06/30/83 TLD 01 17.720.4 ~21.9t0.7-GAMA RADIATION 02 11.8t0.6 15.820.6 03 11.720.3 16.lt0.4 4

04 13.9t0.3 16.4t0.2 05 15.8t0.7 20.4t0.3

05A 15.4t0.2 19.It0.4 j 06 18.410.1 23.820.3 1 07 14.3t0.2 18.St0.5 i 21 14.320.2 18.810.6 22 20.41t0.2 H 24.120.3 H E3 20.0t0.4 23.4t0.4 CONTROL 24 10.3t0.2 L 14.521.0 L i

) TLD ALL 15.313.3 mR/91 days .19.4t3.3mR/92 days (a)

GAMA E AN

0.17t0.04 sit / day 0.2120.04 mR/ day

. RADIATION 1 SIGMA H = HIGHEST

, L L = LOWEST f (a) These results were obtained with no control dosimeters for subtracting transit dose and system background.

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, VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION EXPOSURE PATHWAY-AMBIENT GAMA RADIATION s

TLD.

(mR/ YEARLY)

I 06/30/82 - 06/30/83 1

SAMPLE STATION

! NUCLIDE NUISER l TLD 01 75.912.2 N

j RADIATION 02 56.211.0

! 03 54.6t0.7 4

l 04 58.St0.6 4

j 05 75.4t0.2 t

OSA 73.511.4 06 88.823.5 l 07 66.212.1 1

21 67.0t1.5 I

22 90.6tl.4 H ,

1 23 85.0tl.6

{ CONTROL 24 52.3t2.8 L 1

1 TLD AVERAGE ALL STATIONS i I sigma 70.3 i 13.4 mR/ yearly i GAMA 0.1910.04 mR/ day-

RADIATION H = HIGHEST

{ L = LOWEST i .

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( PC I /L I TER I STAT ION NUMBER Ce DISCHARGE L AG33NS-1 1 M!.14e DEG.

DATE COLLECTED 04/ 14 05/C9 05/09 05/18 06/14 RADI CCHEMICAL ANALYSIS I-131 6.5 +-2.0 E-01 7. 3 +- 1. 7 E- 01 6. 6 +- 1. 9 E-01 4.7 +-0.2 E 00 L.T. 2. E-01 LT -

GAPPA SPECTRUP ANALYSIS BE-7 L.T . 4. E 01 L.T. 6. E 01 L. T. 5. E 01 L. T. 6. E 01 L.T. 6. E 01 K-43 L.T. 7. E 01 L.T. 2. E 02 L. T. 2. E 02 L. T. 1. E 02 L.T. 1. E 02 MN-54 L.T. 3. E 00 L.T. 7. E 00 L. T. 5. E 00 L. T. 5. E 00 L.T. 6. E 00 C0-58 L.T. 4. E 00 L.T. 6. E CO L. T. 5. E 00 L. T. 6. E 00 L.T. 6 E 00 FE-59 L.T. 9. E 00 L.T. 2. E 01 L. T. 1. E 01 L. T. 1. E 01 L.T. 1. E 01 00-60 L.T. 4. E 00 L.T. 6. E 00 L.T. 6. E 00 L. T. 5. E 00 L.T. 5. E 00 iN-65 L.T. 9. E 00 L.T. 1. E 01 L.T. 1. .E.01 L. T. 1. E 01 L.T. 1. E 01 ZR-95 L.T. 4. E 00 L.T. 7. E 00 L. T. 6. E 00 L. T. 6. E 00 L.T. 7. E 00 RU-103 L.T. 5. E 00 L.T. 7. E 00 L.T. 6. E 00 L.T. 7. E 00 L.T. 8. E 00 RU-106 L.T. 4. E 01 L.T. 6. E C1 L. T. 4. E 01 L.T. 5. E 01 L.T. 5. E 01 I-131 L.T. 1. E 01 L.I. 2. E C1 L.T. 1. E 01 L. T. 2. E 01 L.T. 2. E 01 CS-134 L.T. 4. E 00 L.T. 7. E 00 L.T. .6. E 00 L. T. 6. E 00 L.T. 6. E 00 C S-13 7 L.T. 5. E 00 L.T. 7. E 00 L.T. 6. E 00 L.T. 6. E 00 L.T. 6. E 00 BA-140 L.T. 7. E 00 L . T .. 1. E 01 L.T. 9. E 00 L. T. 1. E 01 L.T. 1. E 01 CE-141 L.T. 7. E 00 L.T. 2. E 01 L. T. -1. E 01 L. T. 1. E 01 L.T. 1. E 01 CE-144 L.T. 3. E 01 L.T. 6. E 01 L. T. 5. E 01 L. T. 5. E 01 L.T. 4 E 01 RA-226 L.T. 8. E 01 L.T. 2. E 02 L. T. 1. E 02 L. T. 1. E 02 L.T. 1. E 02 T9-228 L.T. 7. E 00 L.T. 1. E 01 L. T. 1. E 01 L. T. 1. E 01 L.T. 1. E 01 RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (05/18-06/14)

SR-89 L.T. 7. E 01 SR-90 1.4 +-0.5 E 00 TRITIUM ANALYSIS H-3 2.77+-0.18E 03 s

- _ _ _ _ _ - - . _ ~ -- - -

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O O VIRGIN I A ELECTRIC & POWER COMPANY 13RTH ANNA POWER STATION EXPOSURE PATHWAY - WATERBORNE WATER - SURFACE I PC I /L I TER 1 ST AT 104 N tJM BER 'CS L AK E ANN A, UPS-2.2 MI. 320 DEG. ICONTROLI DATE COLLECTED 04/14 CS/18 06/14 CAOIECHEPICAL ANALYSIS .

/

I-131 L.T. 3. E-01 L.T. 2. E-01 L. T. 2. E-01 GAPPA SPECTRUP AN ALYS IS BE-7 L.T. 5. E 01 L. T. 8. E 01 L. T. 4. E 01 K-40 L .T . 2. E 02 L. T. 2. E 02 L. T. 6. E 01 PN-54 L.T. 6. E 00 L.T. T. E 00 L. T. 3. E 00 CO-58 L.T. 6. E 00 L.T. 8. E 00 L. T. 4. E 00 FE-59 L .T . 1. E 01 L. T. 2. E 01 L. T. 7. E 00 C0-60 L.T. 6. E 00 L. T. 7. E 00 L. T. 4. E 00 ZN-65 L.T. 1. F 01 L. T. 2. E 01 L. T. T. E 00 ZR-95 L.T. 6. E 00 L. T. 8. E 00 L. T. 4. E 00 RU-103 L.T. T. E 00 L.T. 1. E 01 L. T. 5. E 00 RU-106 L.T. 5. E 01 L. T. T. E 01 L. T. 3. E 01 I-131 L .T . 1. E 01 L.T. 4. E 01 L.T. 2. E 01 ,

L CS-134 L.T. 6. E 00 L.T. 2. E 00 L. T. 4. E 00 CS-137 L.T. T. F 00 L. T. 8. E 00 L. T. 4. E 00 BA-140 L.T. 1. E 01 L. T. 2. E 01 L. T. 9. E 00 CE-141 L .T . 1. E 01 L. T. 2. E 01 L.T. 1. E 01 CE-144 L.T. 5. E 01

.T. 6. E 01 L. T. 3. E 01 RA-226 L.T. 1. E 02 L.T. 1. E 02 L. T. 8. E 01 TH-228 L .T . 1. E 01 L.T. I. E 01 L.T. 9. E 00 RAD 10 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (04/14-06/14)

SR-89 L.T. 1. E 01 SR-90 L.T. 9. E-01 TRITIUM ANALYSIS H-3 1.72+-0.17E 03 i

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VIRGIM I A ELECTRIC C POWER CCMPANY

, MORTH ANNA POWER S TA TI ON EEPOSURE P ATHWAY - hA TERBORNE WATER - RIVER I PC I /L I TER I

, ST AT ION N UM8ER 11 NORT H ANNA R.DOWN S-5.8 MI.128 DEG.

i 1

7 DATE CCLLECTED 06/14

', RADICCHEMICAL ANALYSIS I SR-89 L.T. 3. E 00 l SR-90 L.T. 9. E-01 n

GAPPA S PE CT RU P ANALYS IS BE-T L.T. S. E 01 K-40 L.T. 1. E 02 MN-54 L .T . 4. E 00

! CD-58 L.T. 5. E 00 1 FE-59 L.T. 1. E 01 ,

I CD-60 E 00 L.T. 4.

ZN-65 L.T. 1. E 01 4 Z R-95 L.T. 5. E 00

. RU-103 L.T. 6. E 00 -

i RU-106 L .T . 4. E 01 j I-131 L.T. 2. E 01 i CS-13 4 L.T. S. E 00.

] CS-137 L.T. 5. E 00 4 BA-140 L.T. 1. E 01 l CE-141 L.T . 1. E 01 l CE-144 L.T. 4. E 01 i RA-226 .L.T. 9. E 01 l TH-22 8 L.T. 9. E 00 1

TRITIUP ANALYSIS H-3 1.92+-0.12E 03 4

1 .

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-NORTH ANNA POWER STATION EXPOSURE PATHWAY - AIRBORNE WATER - GROUND (PCI/ LITER)-

' STATION NUMBER OlA ON SITE 0.2 MI. 42 DEG. NW DATE COLLECTED 06/30 6AMMA SPECTRUM ANALYSIS

~BE-7 L.T. 6. E 01 K-40 L.T. 9. E 01 MN-54 L.T.- 5. E 00 ;

CO-58 L.T. 6. E 00 FE-59 L.T. 1. E 01 CO-60 L.T. 6. E 00 ZN-65 L.T. 1. E 01 ZR-95 L.T. 6. E 00 RU-103

L.T. 8. E 00 RU-106 L.T. 5. E 01 1-131 L.T. 3. E 01 CS-134 L.T. 7. E 00 CS-137 L.T. 6. E 00 BA-140 L.T. 1. E 01 CE-141 L.T. 1. E 01 CE-144 L.T. 5. E 01 RA-226 L.T. 1. - E 02 TH-228 L.T. 1. E 01 RADI0 CHEMICAL ANALYSIS SR-89 L.T. 3. E 00 SR-90 L.T. 8. E-01 TRITIUM ANALYSIS H-3 2.2 +-0.6 E 02

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(f V IRGIN I A EL EC TR IC E P0hER' CCMPANY ' VIRGINIA STATE DEPARTMENT NORTH ANNA POWER STA TION OF HEALTH / SPLIT VEPCO E(POSURE P A THWAY - WA TERBORNE W ATER - SURFACE

( PC I /L I TER I ST AT ION NUMBER DA1E CCLLECTED 04/01 04/01 C 4 / 01-04 / 3 0 04/01-04/30 RADICCHEMIC AL ANALYSIS GR-B 16 +-1.0 E 00 1. 7 +- 1. 0 E 00 L. T. 1. E 00 ~ L. T. 1. E 00 G APPA SPECTRUM ANALYSIS

,)

BE-7 L.T. 7. E 01 L.T. 6. E 01 L .1. 9. E 01 L. T. 6. E 01 K-40 L.T. 2. E 02 L.T. 2. E 02 L.T. 1. E 02 L. T. 6. E 01 MN-54 L.T. 6. E 00 L.T. 6. . E CO L. T. 6. E 00 L. T. 4 E 00 C0-58 L.T. 6. E 00 L.T. 6. E 10 0 L.T. S. E 00 '. . T . 5. E 00 FE-59 L.T. 2. E 01 L.T. 2.- E 01 L.T. 2. E 01 L. T. 1. E 01 C D-60 L.T. 7. E 00 L.T. 7. E 00 L.T. 5. E 00 L. T. 4. E 00 ZN-65 L.T. 2. E 01 L . T. 2. E 01 L.T. 1. E 01 L.T. 7. E 00 ZR-95 L.T. 7. E 00 L.T. 7. E 00 L. T. 9. E 00 L. T. 6. E 00 RU-10 3 L.T. 8. E 00 L.T. 8. E 00 L. T. 1. E 01 L. T. 8. E 00 RU-106 L .T . 6. E 01 L.T. 6. E 01 L. T. 5. E 01 L.T. 3. E 01 I-131 L.T. 1. E 01 L.T. 2. E 01 L. T. 4. E 02 L. T. 3. E 02 C S-13 4 L.T. 8. E 00 L.T. 7. E 00 L. T. 7. E 00 L. T. 4. E 00 CS-137 L.T. 8. E 00 L.T. 7. E CO L. T. 6. E 00 L. T. 4. E 00 BA-140 L.T. 1. E 01 L.T. 1. E 01 L. T. 7. E 01 L. T. 6. E 01 CE-141 L.T. 2. E 01 L .T . 2. E 01 L. T. 3. E 01 L. T. 2. E 01 CE-144 L .T . 6. E 01 L .T . 6. E C1 L.T. 5. E 01 L.T. 3. E 01 RA-226 L.T. 2. E O2 L.T. 2. E 02 L.1. 1. E 02 L. T. 9. E 01 TH-228 L.T. 1. E 01 L.T. 1. E 01 L. T. 1. E 01 L. T. 9. E 00 TRITIUM ANALYSIS H-3 1.63 +-0.12 E 0 3 2. 34 +-0.14E 0 3 1.22+-C.100 03- 2.38+-0.14E 03 W-26 W-33 W-26 W-33 208 BRIDGE NAPS 208 NAPS DISCHARGE BRIDGE DISCHARGE

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O O O VIRGIN I A EL ECTRIC C PohER COPPANY VIRGINIA STATE DEPARTMENT 1 NORTH ANNA POWER STATION OF HEALTH / SPLIT VEPCO EXPOSURE P ATHWAY - WATERBORNE WATER - SURFACE I P C I /L ITER I ST AT ION NUMBER DATE CCLLECTED 06/10 06/10 06/01-06/30 06/01-06/30 RADICCHEPICAL ANALYSIS GR-B 4.6 +- 1. 0 E C O 4.0 +-1.0 E 00 3.0 +-0.7 E 00 3.7 +-0.8 E 00 GAPPA SPEC TRUP ANALYSIS TRITIUM ANALY' SIS BE-T L.T. 5. E C1 L.T. 4. E 01 L.T. 6. E 01 L.T. 8. E 01 K-40 w_39 L.T. 9. E 01 L.T. 6. E 01 L.T. 5. E 01 L.T. 1. E 02 MN-54 L.T. 4. E CC L.T. 4 E 00 L.T. 3. E 00 L .T . 6. E 00 CO-58 L . T. 5. E CC L.T. 4. E 00 L.T. 5. E 00 L.T. 8. E 00 06/01-06/30 FE-59 L.T. 1. E 01 L.T. 8. E 00 L .T . 1. E 01 L.T. 2. E 01 CD-60 L.T. L.T. H-3 S.3 +-0.7 E 02

5. E 00 3. E 00 L.T. 4. E 00 L.T. 6. E 00 ZN-65 L.T. 1. E Cl L.T. 7. E 00 L.T. 8. E 00 L .T . 1. E 01 ZR-95 L.T. 5. E 00 L.T. 4. E 00 L.T. 6. E 00 L.T. 1. E Ol '

RU-103 L.T. 7. E CC L.T. 5. E 00 L.T. 8. E 00 L.T. 1. E 01 RU-106 L.T. 5. E C1 L.T. 3. E 01 L.T. 3. E 01 L .T . 5. E 01 1-131 L.T. 3. E 01 L.T. 2. E 01 L.T. 3. E 02 L.T. 5. E 02 CS-134 L.T. 5. E 00 L.T. 4. E 00 L.T. 4. E 00 L.T. 6. E 00 W-79 CS-137 L.T. 5. E CC L.T. 6. E 00 L.T. 3. E 00 L .T . 6. E 00 BA-140 L.T. 1 5 E 01 L.T. 1. E 01 L.T. 5. E 01 L.T. 9. E 01 06/01-06/30 6 CE-141 L.T. 1. E 01 L.T. 1. E 01 L.T . 2. E 01 L.T. 3. E 01 CE-144 L.T. 4. E 01 L.T. 3. E 01 L.T. 3. E 01 L.T. 5. E 01 H-3 '3.3 +-0.8 E 02 RA-226 L.T. 1. E 02 L.T. 8. E 01 L.T. 8. E 01 L.T. 1. E 02 TH-228 L.T. 1. E 01 L.T. 8. E 00' L.T. 7. E 00 L.T. 1. E 01 TRITIUP ANALYSIS H-3 2.98 +-0.19 E 0 3 3.98+-0.24E 03 W-26(208 Bridge) W-33 (NAPS Disc) W-26 (208 Bridge) W-33 (NAPS Disc)

ADDITIONAL TRITIUM ANALYSIS 06/01-06/30 06/01-06/30 H-3 1.95+-0.20E 03 2.45+-0.25E 03

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V o VIRGINI A ELECTRIC C P0hER COMPANY '!

NORTH ANNA POWER STATION EEPOSURE P ATHWAY - INGE S TION M ILK

( PC I /L I TER I ST AT ION NUMBER ' 12 H3LL AD AY DA IRY-8.3 M I . 310 BEG.

DATE CCLLECTED 04/14 05/12 Ce/13.(a)

RADI CCHEMIC AL ANALYSIS I-131 L.T. 3. E-01 L.T. 4. E- 01' L. T. 2. E-01 GA>FA S PEC T RU P AN ALYS IS BE-7 L.T. 5. E 01 L.T. 5. E C1. L. T. .5. E 01 K-40 1.18 +-0.12E 0 3 1. C9 +- 0.11E 0 3 1. 4 C+ - C.14 E 03 MN-54 L.T. 4. E 00 L.T. 5. E 00 L.T. 6. E 00 C0-5 8 L.T. 5. E 00 L.T. 5. E CO L. T. 6. E 00 FE-59 L.T.' 1. E 01 L.T. 1. E 01 L.T. 1. E 01 C O-60 L.T. 5. E 00 L.T. 6. E 00 L. T. 6. E 00 2N-65 L .T . 1. E 01 L .T. 1. E 01 L.T. 1. E 01 2R-95 L.T. 5. E 00 L.T. 6. E C0 L. T. 6. E 00 RU-10 3 L .T . 6. E 00 L.T. 6. E 00 L. T. 7. E 00 RU-106 L.T. 4. E 01 L.T. 5. E C1 L . T. 5. E 01 I-131 L.T. 1. E 01 L.T. 2. E 01 L.T. 1. E 01 CS-134 L.T. 5. E 00 L.T. 5.- E CO L. T. 6. E 00 CS-137 L.T. 5. E 00 L.T. 6. E Cl L. T. 6. E 00 84-140 L.T. 8. E 00 L.T. 1. E 01 L. T. 8. F 00 CE-141 L.T. 1. E 01 L.T. 1. E 01 L. T. 1. E 01 C E -144 L.T. 4. E 01 L .T . 4. E Cl . L . T. 4. E 01 RA-226 L.T. 1. E 02 L.T. 1. E C2 L.T. 1. E 02 TH-22 8 L.T. 1. E 01 L.T. 1. E 01 L. T. 1. E 01 RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (06/13)

SR-89 L.T. 7 E 00 SR-90 3.0 +-0.5 E 00 (a) This is a test of a one-month sample. There was insufficient sample from 4/14 and 5/12 to make a quarterly composite.

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' VIRGINI A ELECTRIC E PohER COPPAhY NORTH ANNA POWER STA TION

' EEPOSUH E P ATHWAY - INGE STION M ILK l IPCt/ LITER- 3:

ST AT ION NUMBER - 13 FREDER ICKS HALL-5.6 MI .205 DEG.

1 05/12 06/13

DA TE COLLECTED 04/14 (a) 4

, RADICCHEPICAL ANALYSIS i

E-01 L.T. 3. E-Og L.T.' I. E-01 .7 1-131 L.T. 2.

l GAPMA SPE CT RUP A N ALYS IS

?

BE-7 L.T. '5. -

.E 01 L.T. 4. E 01 L. T. - 3. E 01 i

1.18 +-0.12E 03 1. 3 7 + -0.14 E 0 3 1 K-40 9.87+-0.99E 02 L.T. 4. E 00 MN-54 L .T . 6. E 00 L.T. 4. E CO

{

C 0-5 8 L .T . 6. E 00 L.T. 5. E 00 L. T. 4. E 00 L. T.

FE-59 L.T. 1. E 01 L.T. 1. 'E 01 9. E 00 f L.T. 5.. E 00 CD-60 L.T. 6. E 00 L.T.. 5. E OC ZN-65 L.T. 2. E 01 L .T. 1. E Ct L. T. 9. E 00 1

ZR-95 L .T . . 7. E 00 L.T. 5. E CO L. T. 4. E 00 l RU-103 L .T . 6. E 00 L.T. 6. E 00 L. T. 4. E 00 4

RU-106 L .T . 6. E 01 L.T. 4. E 01 L. T. 4. E 01

} 1. E 01 L. T. , 8. E 00 I-131 L.T. 1. E 01 L.T.

! CS-134 L.T. 7. E 00 L.T. 5. E 00 L. T. 4. E 00

? CS-137 L .T . 7. E 00 L.T. 6. E CO L.T. 5. E 00 84-140 L.T. 1. E 01 L.T. 9. E 00 L. T. 6. E 00 i' L. T. 8. E 00 CE-141 L.T. 1. E 01 L .T . 8. E 00 CE-144 L.T. 5. E 01 L .T . 3. E Cl L.T. 3. E 01 RA-226 L.T. 1. E 02 L.T. 9. 'E 01 L. T. 8. E 01 TH-228 L .T . 1. E 01 L.T. 8. .E 00 L. T. 9. E 00

}

RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (05/12-06/13) (a) j SR-89 L.T. 6. E 00 1

SR-90 2.7 +-0.5 E 00 l

i l

(a) There was insufficient sample from 4/14 to include this sample in the j quarterly composite.

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.- (%.)\ i V IRGIN I A ELECTR IC C ' POWER COMP ANY NORTH ANNA POWER ST A TION EX POSURE P ATHWAY - INGE S TI ON M ILK j (PCI/ LITER I STAT ION NUMBER 14A COLIN DAIRY 8.0 MI. 310 DEG. NW i DATE COLLECTED 04/14 (a) 05/12 06/13 J

CAOI CCHE MIC AL ANALYSIS 1_

J I-131 L.T. 2. E-01 L.T. 5. E-01 L. T. 2. E-01

]

^

GAPPA SPECTRUP AN ALYS IS j BE-T L.T. 6. E 01 L . T. 6. E C1 L.T. 4. E 01

K-40 1.25+-0.13E 03 1. 3 8 +- 0.14E 03 1.44+-0.14E 03 MN-54 L.T. 6. E 00 L.T. 6. E 00 L. T. 5. E 00 4

C0-58 L .T . 6. E 00 L.T. 7. E 00 L.T. 5. E 00

) FE-59 L.T. 1. E 01 L.I. 1. E 01 L.T. 1. E 01 1 C O-60 L.T. 7. E 00 L .T . 6. E 00 L. T. 5. E 00 j ZN-65 L.T. 1.- E 01 L.T. 1. E 01 L. T. 1. E 01 4 ZR-95 L.T. 6. E 00 L . T. 7. E 00 L. T. 5. E 00 RU-103 L.T. 6. E 00 L.T. 7. E 00 L. T. 5. E 00 i RU-106 L .T . 6. E 01 L.T. 6. E 01 L.T. 4. E 01 4

I-131 L.T. 1. E 01 L.T. 2. E 01 L. T. 9. E 00 i

} CS-134 L.T. 7. E 00 L .T . 7. E 00 L. T. 5. E 00 :L

?6 C S-13 T L.T. F. E 00 L.T. 7. E CO L.T. 6. E 00 I BA-140 L.T. 1. E 01 L.T. 1. E 01 L. T. 6. E 00

! CE-141- L.T. 1. E 01 L.T. ~ 2. E 01 L. T. -9. E 00 1 C E -144 L.T. 5 E 01 L.T. 6. E 01 L. T. 4. E 01 i RA-226 L .T . 1. E 02 L.T. 1. E 02 L. T. 9. E 01 i TH-228 L.T. 1. E 01 L.T. 1. E 01 L. T. 9. E 00

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RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (05/12-06/13) (a) l SR-89 L.T. 6. E 00 ll SR-90 4.4 +-0.6 E.00 (a) There was insuffictent sample from 4/14 to include this sample in the quarterly composite, l.;

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Q O .O VIRGIM I A ELECTRIC E PohER COMPANY 43RTH ANNA POWER ST A TI ON EXPOSURE P ATHWAY - INGE S TION F I$H I PC I /GM hE T I STAT 104 4 UMBER Ce ,

DISCHARGE L AG00NS-1.1 MI.14e DEG.

DA TE CCLLECTED 05/ 10, GAPPA SPECTRUP ANALYS IS .

8E-7 L.T. 9. E-02 K-40 1.8 T +-0.19 E 00 MN-54 L.T. 9. E-0 3 (T CO-58 L.T. 9. E-03 .

FE-59 L.T. 2. E-02 CD-60 L.T. 9. E-03 ZN-65 L.T. 2. E-02 2R-95 L.T. 1. E-02 RU-103 L.T. 1. E-02 RU-106 L.T. 7. E-02 1-131 L.T. 4. E-02 CS-134 4.03*-0.86E-02 CS-137 1.42+-0.14E-01 BA-140 L.T. 2. E-02 C E-141 L.T. 2. E-0 2 CE-144 L.T. 7. E-02 RA-226 L.T. 2. E-01 TH-228 L.T. 2. E-02 P

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o o o VIRGIN I A ELECTR IC C POWER COMP ANY N3RTH ANNA POWER STATION.

EXPOSURE P ATHWAY - INGE 5110N F ISH IPCI/GM WET I ST AT ION NUN 8ER CS LAKE ANNA, UP S-2.2 M I . 3 20 DE G. (CCNTHCL)

DATE COLLECTED 05/10 GAPPA SPECTRUP AN A LYS IS BE-7 L.T. 6. E-02 K-40 1.8 7 +-0.19 E 00 MN-54 L.T. 6. E-0 3 N' CD-58 L .T . 6. E-03 ,

FE-59 L.T. 2. E-02 C D-60 L.T. 6. E-0 3 ZN-65 L .T . 1. E-02 ZR-95 L.T. 7. E-03 RU-103 L.T. 8. E-03 RU-106 L.T . 6. E-02 I-131 L.T. 2. E-02 CS-134 L.T . - 8. E-03 CS-137 5.24+-0.66E-02 BA-140 L.T. 1. E-02 CE-141 L.T. 1. E-02 CE-144 L.T. 4 .E-02 RA-226 L .T . 1. E-01 TH-228 L.T. 1. E-02' on L -

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THIRD QUARTER-1983 JUNE 28, 1983 -- SEPTEMBER 30, 1983 DISCUSSION OF RESULTS ,

r AND REMP TABLES t

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T TELEDVNE TABLE OF CONTENTS THIRD QUARTER 1983 PAGE

SUMMARY

AND DISCUSSION OF RESULTS ,

I LIST. 0F TABLES iii j LIST OF FIGURES iii EXCEPTIONS AND SPECIAL EVENTS 1C AIRBORNE EXPOSURE PATHWAY 2C DIRECT, EXPOSURE PATHWAY llc WATERBORNE EXPOSURE PATHWAY 14C AQUATIC EXPOSURE PATHWAY 20C INGESTION EXPOSURE PATHWAY 23C O CONCtOSIONS . 28C l l

- l APPENDIX A - A-1 l Complete Data by Sample Type, Station and Collection Dates First Quarter APPENDIX B 8-1

. Complete Data by Sample Type,- Station and Collection Dates Seccnd Quarter APPENDIX C C-1 Complete Data by Sample Type, Station and Collection Dates Third Quarter 11

WW ISOTOPES LIST OF FIGURES O

PAGE FIGURE 3 Air Exposure - Gross Beta and Ce-144 (1977- ) 4C FIGURE 4 Direct Exposure - Environmental TLD (1977- ) 12C

' FIGURE 5 Water Exposure - Tritium (1977 ) 15C FIGURE 6 Ingestion Exposure - Sr-90 (1977 ) 24C LIST OF TABLES

TABLE 4 Remp Summary - Airborne Exposure SC

-O T m E 5 Rem, S - ary Direct Exposure uC

-TAPLE 6 Remp Summary - Waterborne Exposure 16C+

TABLE 7 Remp Summary - Ingestion Exposure 25C iii 1

WTELEDfDE EXCEPTIONS AND SPECIAL EVENTS THIRD QUARTER 1983 (JUNE 28, 1983 -- SEPTEMBER 30,1983)

EXCEPTIONS All required samples were collected and analyzed in accordance with the VEPC0 radiological environmental monitoring program (REMP) for the third quarter 1983 except as follows:

COLLECTION SAMdLE STATION PERIOD REASON AP Filter 22 08/23-08/30 Malfunction of sampling device.

AP Filter 23 08/09-08/16 Malfunction of sampling device.

Charcoal Filter 22 08/23-08/30 Malfunction of sampling device.

O Charcoal Filter 23 08/09-08/16 Malfunction of V sampling device.

Charcoal Filter 02 08/16-08/23 Sample lost in analysis for I-131 Charcoal Filter 03 08/16-08/23 Sample lost in analysis for I-131 SPECIAL EVENTS During the third quarter of 1983 no unusual events occurred that could be interpreted as effecting the radiological environment.in the vicinity of the North Anna Power Station.

1C

T TELEDVNE

^

AIRBORNE EXPOSURE PATHWAY L (June 28, 1983 -- September 27,1983)

AIR PARTICULATE FILTERS (STATIONS 1,2,3,4,5,5A,6,7,21,22,23,24)

Air particulate filters were collected weekly in the third quarter of 1983 and measured for gross beta activity. The average gross beta activity for the month of July was 0.026 pCi/Cu.M.; in August it was 0.029 pCi/Cu. M.

and in September it was 0.028 pC1/Cu. M. The gross beta activity since 1977 is shown on the graph in Figure 3 on the following page. The activity has returned to normal environmental levels from the average high of 0.30 pCi/Cu.

M. in April of 1981 following the Chinese atmospheric nuclear tests of October 1980. Concurrent with the low gross beta activity the Ce-144 activity is below the limits of detection. The average gross beta activity of all stations is not significantly different from the control station number 24, Orange at 22 miles, 325 degrees NW of the reactors.

The air particulate filters were composited for the third quarter for each station and analyzed on the gamma spectrometer. There were no detections of I-131 nor Cs-137, which are fission products. The naturally occurring cosmogenic nuclide Be-7 was detected in 12 of 12 samples at normal environ-mental levels. Since this is a naturally occurring nuclide, there is no indication of an effect on the air pathway from the operations of the North Anna Power Station.

AIR RADI0 IODINE (STATIONS 1,2,3,4,5,5A,6,7,21,22,23,24)

No I-131 was detected in the weekly charcoal cartridges collected in the

' vicinity of NAPS indicating that no detectable airborne releases of I-131 oc-curred.

PRECIPITATION (STATION 01)

Rain water was collected monthly at station 01, on site, 0.2 miles, 42 degrees NE and analyzed for gross beta activity. The average beta activity for the third quarter of 1983 was 6.6 pCi/ liter. The resulting deposition was 0.24 nanoCi/Sq. M. This is the nominal environmental level for rain water

. and shows no indication of an effect due to the operations of NAPS.

S0ll (STATIONS 1, 2, 3, 4, 5, SA, 6, 7, 21, 22, 23, 24)

Soil samples were collected from twelve stations during the third quarter of 1983. .The samples were analyzed for 18 nuclides on the gamma spectrometer.

The results are sunmarized on pages 9C and 10C. Potassium-40, Ra-226 and Th-228 were detected at all 12 stations. Be-7 was detected at one of the 12 stations (05A Sturgeon's Creek 3.2 miles, 11 degrees SSE). All of these are naturally occurring nuclides that occur everywhere . Cesium-137 was detected at all 12 stations at an average level of 0.579 pCi/ gram, dry. The highest activity was 1.29 pCi/ gram, dry at station 02, Fredericks Hall, 5.3 miles, 225 O degrees f.SW. The level at the control station 24, Orange, 22 miles, 325 degrees NW was 0.409 pCi/gm, dry which is not significantly different from the 2C

TTELEDf>E ISOTOPES

.O average of all stations. Five of the samples from stations 01, 21, 22, 23 and 24 were analyzed for strontium 89 and -90. There were no detections of the short lived isotope Sr-89. There were three detections of Sr-90 at Stations 21, 22 ani 23 at an average level of 1.0 pCi/ gram, dry. This is a low normal environmental level and there was no detection at station 01, on site. Both Cs-137 and Sr-90 are found in soil in many areas and is believed to be from f allout from previous nuclear weapons testing. There is no effect indicated on soil in the vicinity of NAPS from operations of the reactors.

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j. RADIOLOGICAL ENVIRONMENT AL PCNITORING PdCGRAF SUPMARY PATHbAY- AIRBOREE COMP IL A TION - QUAR TERLY SLPMARY VIRGI AI A ELECTRIC C POWER COMPANY .

SAPPLE - AIR PARTICULATE FILTERS CONTROL.- ORANGE-22.C MI.325 DEG.Nb NORTH AANA P0 DER STATION 0%I TS ' - PCI/CU. M AN A LY SI S NO LIMIT CF ALL INCICATOR S AMPLES LOCATION h! TH HIGHE ST PE A A CCATRCL LCCAT ION NON- R EPORT ING PER IOD OET ECT ICN MEAN X E-00 MEAN X E -C C PEAN X E-03 R DUT INE PEAN X E-03 RANGE STATION FRAC TION RA NGE RANGE FRACTION STA TION DE SCRIPTI CA FRACTICN

__=- - - - - - - - - - - - = = _ ---

==- _---.=_. __= .-. ==-

G3-8 154 0.0076 0.028 0.032 0.028 0.026 - 0.029 0 06/28/83-09/27/83 03 013/013 ~0.023 0,046 0.01T -

0.039 '

154/154 MINERAL - 7.1 MI. 243 DEG. 013/013 SAMPLE 2 0.0CC00 0.C00C0 0 08/09/83-C8/30/83 3.00000- 0.00000 22 OCC/CC1 C.CCCCO- 0.00000(a)

ROUTE 7CC-1.C MI.242 DEG.

0.CCCCO 23 OCC/CC1 C.CCCCO- 0.00000(b)

ASPEN HILLS-C.9 MI .15e 05G.

t (a) Sample not collected 08/23-08/30; malfunction of sampling device.

(5) Sample not collected 08/09-08/16; malfunction of sampling device 4

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.s TABLE 4 RADIOL 3GICAL ENV IRONME N T AL PCNI TORI NG- PR CGRAP SUPMARY PATHbAY- AIRBORhE LOMP IL A T ION - QLARIERLY SLPPARY VIRGINI A ' ELECTRIC C . POWER COMPANY SAMPLE - CH ARCC AL FILT ERS CONTROL ORANGE-2/.C MI.325 DEG.Ah NORTH ANNA P04ER STATION UNITS - PCI /CU. M Ah3 LYSI S NO . LIMIT CF ALL INDICATOR SAMPLES LOCATION h! TH HIGHE ST PE A A CCNTRCL LOCAT ION NON- R EPORT ING PER I3D DETECTICN MEAN X E-00 PEAN X E-00 MEAN X E-03 ROUT INE PEAN X E-03 NANGE STATION FR AC TION RA NCE RANGE FRACTICN STA TION DE SCRIP TI CA FRACTICN

..... .--.--..-.== .-- ..-...-----.-... ---... ........... -_ _-........... _ -.--.---...--.... - - - . . _ _ _ _---...

1-131 152. 0.026 LT 2.0 LT 0.020 0 06/28/83939/27/83 LT 0.020 -LT 2.0 LT- 0.0070 -LT O.020 . 's 000/152 000 A013 SA P P LE 4(a) LT 0.0CC00 0 08/09/83-C8/3C/83 LT 0.00000-LT 0.0C000 (a) 08/16-08/23 Station 02 and Station 03 -- Charcoal filter for I-131 lost in analysis.

-08/09-08/16 Station 23 -- Charcoal not collected; malfunction of sampling device. , ,

08/23-08/30 Station 22 - Charcoal not collected; malfunction of sampling device.

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RADIOLOGICAL ENVIRONMENTAL PCNI TCRING PRCGRAM SUPPARY PATHbAY .AIRBORAE COMP IL ATION - QUARTERLY SLPPARY VIRe:NI A ELECT RIC & POWER COMPANY

, SA"PLE - COMPOSITE AIR P ART I CUL AT E FIL T FRS ' CONTROL - ORANGE-22.C MI.325 DEG.Nh NF '.f H ANNA POWER ST AT ION LNI TS - PCI /CU. M 3'

A!!A L YSI S NO LIMIT CF ALL INCICATOR S AMPLES LUCATION hl TH HIGHE ST PEAA CCATRCL LOC AT ION NON- REPORTING PERI 3D OETECTION MEAN X E-00 . FE A N X E-00 MEAN X E R OUT IN E i PEAN X E-00 RANGE STATION FR AC TION RANGE RANGE FRACTICN STA TION DL ICRIP TI CA F R ACT I CN l

4

. BE-7 12 0.0120 0.0724 .

0.0920 0.0794 0 06/20/83-C9/27/83 0.0537 - 0.0920 05 CC1/CC1 C.C920 - 0.0920 0.0794 - 0.0794 012/012 GOOO HOPE CHURCH-4.2 MI.20 DEG.. 001/001

't I-131 12 0.00120 LT 0.0200 LT 0 0100 0 06/28/ 83-C9/27/83 -

LT 0.0100 -LT 0.02C0 LT 0.0100 -LT 0.0100 000/012 000/001 C S-13 7 12 0.00120 LT 0.00200 LT 0.00103 0 06/28/83-C9/27/83

, LT 0.00100-LT 0.0020C LT 0.00100-LT 0.00100 000/012 000/001 2

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TABLE 4 RADIOLOGICAL ENVIRONMEN TAL PCNI TCAING PRCGR AP SUPPARY

. PATHWAY- AIR 80RhE COMP IL ATION' - QUAR TERLY SL*PARY VIRGIhl A ELnCTRIC C POWER COMPANY SAMPLE - WATER - PRECI PIT ATION CONTROL -' NORTH AhNA pod ER ST AT ION UNI 15 , - PCI / LITER t A NA L YSI S . NO LIMIT CF ALL INCICATOR S AMPLES LOC A T ION h! TH HIGHE ST PE Ah CC AT REL LOC AT ION 'NON- 'R EPORTING PERI 3D 4

DETECTION MEAN X E-00 PEAN x E-00 MEAN X E-00 ROUT IN E PEAN X E-00 .

RANGE STATION FRAC TION RANGE. RANGE FRACTION STATION DE SCRIPTION FRACTICN

=_ ---- .---.

6.6 13.1 GR-B 3 1.8 -

13.1 01 003/003 13.1 13.1 0 07/01/83-09/30/83 003/003 ONSITE-0.2 MI.42 DEG.NE )

.34 O.24 01 003/003 .34 .34 GR-B 3 0.19 .34 ONSITE-0.2 MI. 42 DEG.NE O 07/01/83-09/30/83 Deposition 003/003 nC1/Sq.M.

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2.8 LT 0.10 0 07/19/83-07/19/83 0.094 - 2.8 21 CC1/CCI 2. 8 -

2.8 LT 0.10 -LT 0.10 003/005 ROUTE 685-1.0 MI.3C1 DEG. 000/001 BE-7 12 0.200 1.22 1.22 LT 0.400 0 07/19/83-07/19/83 1.22 -

1.22 OSA CC1/CC1 1.22 -

1.22 LT 0.400 -LT 0.400 001/012 STURGE 0N ' S CREE K-3.2 MI . 11 DEG. 000/001 K-4C 12 0.500 11.2 29.3 4.23 0 07/19/83-07/19/83 4.23 -

29.3 23 CCl/CC1 29.3 -

29.3 4.23 -

4.23 012/012 ASPEN HILL S-0.S MI .158 DEG. 001/001 I-131 12 0.0300 LT 0.800 LT 0.500 0 07/19/83-07/19/83 LT 0.300 -LT 0.800 LT 0.500 -LT 0.500 000/012 000/001 CS-137 12 0.0200 0.579 1.29 0.409 0 07/19/83-07/19/83 0.168 - 1.29 02 CC1/CCI 1.29 -

1.29 0.409 -

0.409 012/012 FR EDER ICK S HALL- 5. 3 MI . 225 DEG. 001/001 RA-226 12 0.100 1.86 3.63 1.90 0 07/19/ 83-C7/19/83 -

0.949 -

3.63 22 'CC1/CCI 3.63 -

3.63 1.90 -

1 90 312/012 ROUTE 7CO- 1.C MI .242 DEG. 001/001

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$ APPLE - S O I L- CONTROL - ORANGE-22.C MI.325 DEG.hh NORTH ANNA PodER STATION LNI15 - PCI/GP DRY AhALV$15 NO LIMIT CF ALL INCICATOR S AMPL ES LOCA TION L w!1H HIGHE ST PE AN - CCNTRCL LOCATION NON- R EP3RTING PERIOD DE T ECT ICN ME AN X E PEAN X E-00 PEAN X E-00 R CUT IN E PEAN X E-03 R ANG E -'- STAT 101 FRACTION RAAGE RANGE FR ACT ICN STA TICN DE ECRIPTI CA FRACTICN

_______ - = _ _ _ _ _ - . ____

=- ____ _________________

TH-228 12 0.0200 1.31 2.85 0.907 0 07/19/ 83-C7/19/83 0.379 '- 2.85 06 CC1/CC1 2.e5 -

2.85 .

0.907 - 0.907 012/012 LEVY-4.7 MI.115 DEG. 001/001 n.

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NE WOTOPES DIRECT EXPOSURE PATHWAY (JUNE 30, 1983 -- SEPTEMBER 30,1983

' ENVIRONMENTAL CAMA DOSE - THERM 0 LUMINESCENT DOSIMETERS (STATIONS 1, 2, 3, 4, 5, 5A, 6, 7, 21, 22, 23, 24)

The average gamma environmental dose as measured on thermoluminescent dosimeters at twelve stations in the vicinity of the North Anna Power Station during the third quarter of 1983 was 0.19 mR/ day. The range of the environ-mental dose was 0.12 to 0.25 mR/ day. The highest dose was 0.25 mR/ day at station 23, Aspen Hills, 0.9 miles 158 degrees SSE. The lowest dose was 0.12 mR/ day at station 24, which is the control station, Orange at 22 miles, 325 degrees, NW.

Figure 4 shows the plot of the average dose levels monitored, which indicates no significant change in the level of the direct exposure pathway since 1977 due to the operation of the North Anna Power Station. This is less than the estimated whole body dose per quarter due to natural terrestrial and cosmic radiation and internal dosage from natural radionuclides. Table 5 summarizes the average activity of all indicator stations, the location with the highest mean and the activity c.f the control station 24.

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' SAMPLE TLD ENVIRONMENTAL BADTES CONTROL - ORANGE-22.C Mt.325 DEG.hk NORTH AANA P0 DER STATION LOI T S ar/ day STATION 24 A NA LY SI S NO LIMIT CF ALL INCICATOR S AMPLES LOCA TION . bl TH HIGHE ST PEAh CChTRCL LOCAT ION NON- REPORTING PER IOD DETECT ICN MEAN X E-00 .

PEAN X E -0 0 MEAN x E-03 RDUTINE PEAN X E-00 RANGE STATION FRAC TION HANGE RANGE FRACTICN STA TION DE SCRIP TION F R ACT I CN

_= - -

GAMMA 12 0.05 0.19 0.25 0.12 0 06/30/83-09/30/83 DOSE 0.12 0.2S 06- 001/001 001/001 012/012 LEVY.-- 4.7 -- MI. 115 DEG. ESE s

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T TELEDG E ISOTOPES O WATERBORNE EXPOSURE PATHWAY (JULY 1, 1983 -- SEPTEMBER 30,1983)

SURFACEWATER(STATIONS 08,09)

Surface water was collected monthly at two stations and analyzed for radiciodine by the ion exchange method and gamma enitting nuclides. These nuclides and iodine-131 remained below the limits of detection. There were no positive detections of I-131 at Station 08, the discharge lagoon, as occurred in the second quarter. The quarterly composite was analyzed for tritium. The level of tritium activity at Station 08, the discharge lagoon, was 2600 pCi/ liter as compared with 2700 pCi/ liter during the second quarter.

Figure 5 illustrates the trend of tritium activity at Station 08 from 1977 through the third quarter of 1983.

The trititan activity at Station 09 at Lake Anna, 2.2 miles upstream, 320 degrees NW, was 2100 pCi/ liter as compared with 1720 pCi/ liter during the second quarter. This level of trititsn activity is significant since it is upstream of the plant.

RIVER WATER (STATION 11)

A quarterly sample of river water was analyzed for gamma enitting nuclides

.j and trititsn. Tritium activity at Station 11, North Anna River, 5.8 miles down stream, was 2850 pCi/ liter. This compares with 1920 pCi/ liter in the second quarter and is below the maximum allowable concentration for tritium. No iodine-131 nor gawna enitters were detected suggesting that the effluent releases consisted primarily of tritium.

GROUND WATER (STATION 01A)

Ground water from the environmental well on site, collected and analyzed quarterly, contained no gamma enitters and the trititsn activity was at a low environmental level. This indicates no adverse effects via the waterborne pathway due to the operations of NAPS.

SAMPLES FROM THE VIRGINIA STATE DEPARTMENT OF HEALTH SURFACE WATER (STATIONS W-26, W-33) l A sample of surface water was collected monthly from Station W-26, the 208 Bridge and W-33, the NAPS Discharge Lagoon and analyzed for gross beta activity and a gamma scan. The average gross beta activity level for the six samples was 3.2 pCi/ liter which is a low environmental level. There were no gamma emitters detected. The monthly samples of July and Septenber were analyzed for tritium; also a monthly composite for Septenber. The average trititsn level for W-26, the 208 8 ridge, was 2000 pCi/ liter. The average level for W-33, the NAPS Discharge Lagoon was 2320 pCi/ liter. The tritium level for 1

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the monthly composite from Station W-19 was 550 pCi/ liter and from Station W-79 was 260 pCi/ liter.

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=_____________ -- -=_- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _

.m I-131 6 LT 0.40 By Radiochemical LT 0.40 0 07/14/83-09/13/83 LT 0.40 -LT 0.40 Separation LT 0.30 -LT 0.40 000/006 000/003 I-131 6 LT 30.0 By Gamma Spectroscopy LT 30.0 0 07/14/83-09/13/83 LT 9.0 -LT 30.0 LT 10.0 -LT 30.0 000/006 000/003 CS-137 6 LT 8.00 LT 6.00 0 07/14/83-09/13/83 LT 4.00 -LT 8.00 LT 4.00 -LT 6.00 000/006 000/003 H-3 2 2350. 26co. 2100. 0 07/14/83-09/13/83 2100. - 2600. De cct/ col 26CC. -2600. 2100. - 2100.

002/002 c!SCHARGE L AG00NS-1.1 FI.148 UEG. 001/001

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TABLE 6 STATE OF VIRGINIA DEPARTMENT'

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RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Or HEALTH / SPLIT VEPCO PATHWAY - WATERBORNE COMPILATION _ QUARTERLY

SUMMARY

. VIRGINIA-ELECTRIC and POWER COMPANY

SAMPLE - WATER - SURFACE CONTROL - LAKE ANNA.UPS-2.2 MI. 320 DEG. NW MORTH ANNA POWER STATION UNITS - PCI/ LITER ANALYSIS NO- LIMIT OF ALL INDICATOR SAMPLES LOCATION WITH HIGHEST MEAN CONTROL LOCATION NON- REPORTING PERIOD DETECTION MEAN X E-00 MEAN X E-00 MEAN X E-00 ROUTINC 1 MEAN X E-00 RANGE STATION FRACTION RANGE RANGE FRACTION STATION. DESCRIPTION FRACTION GR-B 6 3.2 3.3 0 07/01/83-09/30/83 Ob6/006 Discharge Ob/003 I-131 6 500.0 LT 20.0 -LT 500 0 07/01/83-09/30/83 000/006

. CS-137 6 LT 7.0 LT 4.00 -LT 7.0 0 07/01/83-09/30/83 000/006 H-3 6 2160. 2320. 0 07/01/83-09/30/83 5

1780. -

2410. W-33 003/003 2040. 2410 006/006 NAPS Discharge H-3 2 W-19 550. 0 09/01/83-09/30/83 W-79 260.

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. TABLE 6 RADIOLOGICAL ENVIRONMENTAL-MONITORING PROGRAM

SUMMARY

PATHWAY'- WATERBORNE COMPILATION QUARTERLY

SUMMARY

VIRGINTA ELECTRIC and POWER COMPANY SAMPLE - WATER - RIVER CONTROL - PREVIOUS 3 QUARTERS NORTH ANNA POWER STATION UNITS . pC1/11ter ANALYSIS N0' LIMIT OF ALL INDICATOR SAMPLES LOCATION WITH HIGHEST.MEAN CONTROL LOCATION NON. REPORTING PERIOD DETECTION MEAN X E-00 MEAN X E-00 MEAN X E 00 ROUTI;1E MEAN X E-00. RANGES STATION FRACTION RANGE RANGE FRACTION STATION DESCRIPTION FRACTION 1-131 1 LT 10.0 LT 10.0 . _LT 10.0 0 09/13/83-09/13/83 000/001 CS-137 1 LT 5.00 LT 5.00 _LT 5.00 O 09/13/83 09/13/83 000/001 2850.

H-3 1 2850. 11 001/001 2850. 2850.

2850. -

2850. NORTH ANN A R ,00WNS-5.8 MI .128 DEG.

0 09/13/83 09/13/83 001/001 n

w- . _ _

A

'1

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TABLE 6 RADIOLOGICAL. ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

PATHWAY - WATERBORNE COMPILATION . QUARTERLY

SUMMARY

' SAMPLE - WATER . GROUND . VIRGINIA ELECTRIC and POWER COMPANY.

CONTROL - PREVIOUS 3 QUARTERS MORTH ANNA POWER STATION.

UNITS - pCi/ liter ANALYSIS NO LIMIT OF ALL INDICATOR SAMPLES LOCATION WITH HIGHEST MEAN ' CONTROL LOCATION NON- REPORTING PERIOD DETECTION MEAN X E-00 . .

MEAN X E-00 MEAN X E.00- ROUTINE

'MEAN X E-00 RANGE STATION FRACTION RANGE RANGE

. FRACTION STATION DESCRIPTION FRACTION I.131 1 10.0 LT 20.0 STATION 1A LT 20.0 ' -LT 20.0 0.2 MI. 42 DEG NE 0 09/30/83 09/30/83 000/001 i

CS-137 1 9.00 LT 7.0 LT 7.0 .LT 7.0 0 09/30/83.C9/30/83 ,

000/001 H-3 1 100. 200.0 200.0 -

'200.0 0 09/30/83 09/30/83 i 001/001 l l

l

!o l

l Y

7 T TELEDVNE ISOTOPES AQUATIC EXPOSURE PATHWAY (March 15,1983 -- September 13,1983)

Q-SEDIMENT / SILT (STATION 08,09,11)

Sediment and silt samples are collected semiannually and analyzed for gama emitting nuclides and strontium 89 and 90 annually. The gama isotopic analysis showed the presence of the cosmogenic and terrestrial nuclides Be-7, K-40, Ra-226 and Th-228 at normal environmental levels.

In addition Cs-137, which is a fission product, was found at all three stations. The average level of activity was 0.128 pCi per gram, dry with the highest reading of 0.250 pC1 per gram, dry at the control station, 09, 2.2 miles upstream, 320 degrees NW. Cesium-134, which is a fission product with a relatively low half-life was also detected at slightly above the minimum detection level of 0.02 pCi/ gram, dry. The annual analysis for strontium 89 and 90 showed none present above the lower limits of detection.

SHORELINE S0IL (STATION 09)

Shoreline soil is collected semiannually and analyzed for gamma emitting isotopes. A composite is prepared annually and analyzed for strontium 89 and 90.

p The gamma spectrum analysis showed the presence of the naturally occurring V nuclides K-40, Ra-226 and Ra-228. The fission product Cesium-137 was present at station 09, Lake Anna, 2.2 miles upstream, 320 degrees, NW at a level of 0.193 pCi per gram, dry. Detections of Cs-137 at this level is fcund fre-quently and is believed to be f allout from previous weapons testing. No neutron activation products were detected in these samples. The annual analysis for strontium-89 and -90 showed no activity above the minimum level of detection.

O 20C

?\w/ Y[ O TABLE 6 R ADIOLOGICAL ENVIRONMEN TAL PCNI TORING PRCG#AP SUPPARY PATHbAY- AQUATIC' COMP ILATION - QUAR TERLY St> MARY VIRGINI A ELECTRIC C POWER COMPANY SAMPLE - SEDIMENT / SILT CON TROL - L AKE ANNA ,LP S-2. 2 MI . 32 0 DEG. NW . NORTH ANNA POW ER ST AT ION UNITS - PCI/GP DRY ANA LYSI S NO LIMIT CF ALL INCICATOR S AMPL ES LOCATION WI TH HIGHEST PE AN CCNT90L LOC AT ION NON- R EPORTING PCR IOD DETECTICN MEAN X E-00 PEAN X E-00 PEAN X E -00 ROUTINE PEAN X E-00 RANGE STATION FRAC TION RA NGE RANGE

FRACTION STA TION DE SCRIPTI CA FRACTICN i

BE-7 3 0.200 0.367 0.367 0.367 0 09/13/83-C9/13/83 0.367 - 0.367 09 CCl/CC1 C.367 - 0.367 0.367 - 0.367 001/003 LAKE ANNA, UFS-2.2 Pl. 320 DEG. ICON 001/001 N-4C 3 0.500 8.21 16.6 6.13 0 09/13/ 8 3-C9/13/83 1.91 -

16.6 11 CC1/CCI 14.6 -

16.6 6.13 -

6.13 003/003 N3R TH ANN A R ,00hN S-5. 8 FI .12 8 OCG. 001/001 I-131 3 0.0300 LT 0.400 LT 0.200 0 09/13/ 83-C9/13/83 LT 0.200 -LT 0.400 LT 0.200 -LT 0.200 000/003 000/001 4

CS-137 3 0.0200 0.171 0.250 0.250 0 09/11/ a 3-C9/13/R3 0.0937 - 0.250 09 CC1/CCI C.25C - 0.250 0.250 - 0.250 002/003 LAKE ANNA, UPS-2.2 FI. 120 DEG. ICON 001/001 RA-226 3 0.100 1.97 ?.74 1.20 0 09/13/ 8 3-C9/13/83 1.20 -

2.74 11 CC1/CCI 2.74 -

2.74 1.20 -

1.20 002/003 NORTH ANNA R,00hNS-5.8 FI.128 DEG. 001/001 TH-228 3 0.0200 1.0R 1.60 1.18 0 09/13/ 83-C9/13/83 3.473 - 1.60 11 Oct/CC1 1.6C -

1.60 1.18 -

1.18 003/003 N3RTH ANNA R,00hNS-5 8 FI.128 DEG. 001/001 LT 0.40 LT 0.30 0 03/15/83-09/13/83 SR-89 3 LT 0.30 LT 0.50 LT 0.30 LT 0.30 000/003 000/001 2

n LT 0.070 LT 0.050 0 03/15/83-09/13/83 SR-90 3 LT 0.050 LT 0.080 LT 0.050 LT 0.050 000/003 000/001 t -

Cr O O TABLE 6 R AD IOLO GI CAL ENVIRONMEN TAL PCNI'TCRI NG PROG #i> SUPPARY PATHkaY. AQUATIC COMP IL AT ION - QLAR TERLY SLWPARY VIRGIh!A ELECTRIC C POWER C3MPANY 5 APPLE - SHORELINE SOIL CONTROL - NCRTH ANNA POWER ST AT ION n UNI 15 - PCI/GP DRY ANALYSIS NO LIMIT CF ALL INCICATOR S AMPLES LOCATION WI TH HIGHE ST PEAN CCNTROL LOC AT ION NON- REP 3RTING PERIOD DET ECT ICN MEAN X E-00 FEAN X E-00 PEAN X E-00 ROUTINE PEAN X E-00 RANGE ST A T ION FR AC TION - RANGE RANGE FR ACT ION STA TION DE SCRIP TI CN FRACTION

________ ___= -

_==. _____________________________________ _______________ == ____ _________________

K-4 C 1 5 12 5.12 0 09/13/83-09/13/83 5.12 -

5.12 09 CC1/001 5.12 -

5.12

001/001 LAKE ANNA, UP S-2. 2 Pl . 320 DEG. ICCN I-131 1 LT 0.200 0 09/13/8 3-C9/11/03 LT 0.200 -LT 0.200 000/001 '

CS-134 1 0.0718 0.0718 0 09/13/ 8 3-C9/13/03 0.0718 - 0.0718 09 CCl/CCI C.C718 - 0.0710 i 001/001 L AKE ANNA , UP S-2. 2 Pl . 320 DEG. (CCN

, CS-137 1 0.193 0.193* O 09/13/ 83-C9/13/e3 0.193 - 0.193 09 CC1/CC1 C.193 - 0.193 001/001 L AKE ANNA . UP S-2.2 Pl. 320 DEG. (CCN r RA-226 1 1.47 1.47 0 09/11/e3-C9/13/83 1.47 -

1.47 09 CC1/CCI 1.47 -

1.47 001/001 LAKE ANNA, UP5-2.2 Pl. 320 DEG. (CCN TH-228 1 1.14 1.14 0 09/13/ 83-C9/13/83 1.14 -

1.14 09 CC1/CCI 1.14 -

1.14 001/001 LAKE ANNA , UPS-2.2 FI. 320 DEG. ICON LT 0.4 SR-89 1 LT 0.4 -LT 0.4 0 03/15/83-09/13/83

, 000/001 LT 0.08 LT 0.08 SR-90 1 LT 0.08 -LT 0.08 09 000/001 LT 0.08 -LT 0.08

.i 000/001 LAKE ANNA, UPS-2.2 MI. 320 OEG. 0 03/15/83-09/13/83 (CONTROL)

TTELEDVNE O INGESTION PATHWAY (JULY 11, 1983 -- SEPTEMBER 8, 1983)

MILK (STATIONS 12,13,14A)

Milk samples were collected monthly from the above stations. They we're analyzed by radiochenical separation for I-131 and all results were below the minimtsn level of detection of 0.5 pCi/ liter. A gamma analysis showed no gamma emitters above the minimisn level of detection except K-40, the natural ter-restrial nuclide which was at the normal environmental level.

A quarterly ccmposite was prepared for the three stations and the average Sr-90 activity level was 1.8 pCi/A as compared with 3.3 pCi/E for the second quarter of 1983. There were no detections of Sr-89. There was one detection of Cs-137 in the collection of August 11 at station 12, Holladay Dairy, 8.3 miles, 310 degrees NW at slightly above the detection limit. This is not uncommon since it is also found in vegetation which cows feed upon and which is due to fallout from previous nuclear weapons testing. These results indicate that no detectable NAPS releases occurred that adversely affected milk samples.

FISH (STATIONS 08, 09)

No fish samples were scheduled to be collected during the third quarter.

Fish is collected annually at the beginning of the season from two stations.

See page 198.

TERRESTRIALVEGETATION(STATION 21,23)

Two samples of terrestrial vegetation (a green leafy vegetable) were collected during the third quarter from stations 21 and 23. They were tested for gamma emitting isotopes on the gamma spectrometer and only the naturally occurring isotopes K-40 and Be-7 were detected at normal environ-mental levels.

SAMPLES FROM THE VIRGINIA STATE DEPARTMENT OF HEALTH !

One sample of terrestrial vegetation (cabbage, a green leafy vegetable) was collected from station V-92 by the State of Virginia and analyzed on the gamma spectrometer. No nuclides except naturally occurring K-40 were detected ,

indicating no effect on terrestrial vegetation from the operations of the l North Anna Nuclear Power Station.

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O O TABLE 7 l

RADIOLOGICAL ENVIRONMEN TAL PCNI T04I NG PRCGRAM SUPPARY PATHhAY- I NGESTICN COMP IL A TION - QUAR TERLY SL* MARY - VIRGINI A ELECTRIC C POWER COMPANY SIM*LE - M I LM ' CONTROL ~ NORTH ANNA P0 DER ST AT ION LNI TS -' PCI /LI TE R i

thA L1SI S NO LIMIT CF ALL INDICATOR S AMPLES ' LOCATION NITH HIGHEST PEAh CCNT ACL LCCAT ION NON- ' REPORTING PER IOD !

DETECT ION MEAN X E-00 PEAN X E-00 PE AN X E-00 ROUT IN E l PEAN x E-00 RANGE STATICN FRAC TION RANGE. . RANCE FR ACT ION STA TION DE SCRIP TI CA FRACTICN I'

I I-131 9 0.50 LT 0.40 0 07/II/ 83-C9/08/8 3 '

LT. 0.40 -LT 0.40 1 000/009 SR '-

3 LT 5.0 LT 5.0 QUARTERLY COMPOSITE o 07/II/83-C9/08/83 LT 4.0~ -LT 5.0 LT 4.0 -LT 5.0 000/003 SR-90 3 0.80 1.8 2.3 QUARTERLY COPPOSITE O 07/11/83-C9/08/83 1.2 .

2.3 12 OC1/CCI 2. 3 -

2.3 003/003 HOLLADAY D41RY-P.3 FI.3tc DEG.

T M-4C 9 200. 1300. 1320. 0 07/11/83-09/08/83 1270. -

1320. 14A 003/CC3 12cC. -1350.

009/009 COLVIN DAIRY-8.0 MI.310 DEG. NW I-131 9 0.500 -

. LT 70.0 0 07/11/83-09/08/83 LT P10.0 -LT 70.0 0?0/009 CS-IIT 's 9- 3.00 6.51 6.51 0 07/11/83-09/08/83 0 6.51 -

6.51 12 001/C03 e.51 -

6.51 001/009 HOLL ADAY 04 tRV-E. 3 Pl . 310 DEG.

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.c , -3 PA THW AY- I hr,E5'T10k ' (OMPILATION - QUARTERLY $1l* MARY VIRGINI A ELECTRIC C POWER COMPANY e taELE 2V EGETAflCN - TERRESTRI AL CONTROL -

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TABLE 7 VIRGINIA STATE 3EPARTMENT OF HEALTH / SPLIT VEPCO R ADIOL3 GICAL ' ENVIRONMEN TAL PCNI TORI NG PRCGRAP SUPPARY-PA THWAY- I NGE S TI CN COMP IL ATION - QUAR TERLY SLPMARY VI RGINI A ELECTRIC' C POWER COMPANY .

. SAMPLE - FCCD/ GARDEN CROPS CONTROL - f40RT H AANA PDdER ST AT ION L%I15 . . PCI /GP WET l AnaLYSI S NO LIPIT CF ALL INCICATOR S AMPLES LOCATION hI TH HIGHE ST PEAA CCATRCL LCC AT ION . NON- REPORTINC PERIOD

. DETECT ICN - MEAN X E-00 ME A N X E -C 0 PEAN X E -0 3 . ROUT INE PEAN X E-00 RANGE STATION FR AC TION RANGE RANGE FRACTICN STAi!ON DE SCRIPTI CA F R ACT I CN

--- . = _ -- .....- -----...... --- _- -= --- _-----. ..._ _------ -- - .. ----_ _ _------

K-4 C 1 0.500 6.09 . 6.09 0 07/29/83-07/29/83 6.00 -

6.09 CC1/CC1 6.C9 -

6.09 s 001/001 .

l I-131 1 0.0300 LT 0.300 .0 07/29/ 83-C7/29/83 LT 0.300 -LT 0.300 000/001 CS-137 1 0.0200 LT 0.0 100 0 07/29/ 83-C7/29/83 LT 0.0100 -LT 0.0100 000/001 0

n

y 0

O (JUNE 28 g83 .. SEPTEMBER 30,1983)

The results of the radiological environmental monitoring program conducted in the vicinity of the North Anna Power Station indicate that there is no detrimental effect on the environment from the operations of the North na Nuclear Reactors, Units One and Two.

Increasing levels of tritium activity have been monitored since the start of operations in 1978 of unit 1 of NAPS. The tritium activity at the discharge cooling (Station 08) is now 2600 pCi/ liter compared to 100-200 pCi/ liter during the preoperational period.

In addition the tritiun activity at Laks Anna, upstream 2.2 miles (Station

09) has increased from 160 pCi/ liter in the first quarter 1980 to 2100 pCi/

liter during the third quarter of 1983.

The tritiun activity in the North Anna River downstream 5.8 miles (Station

11) increased from 310 pCi/ liter in the first quarter 1980 to 2850 pCi/ liter during the third quarter of 1983.

O 1

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; ISOTOPES APPENDIX C l

THIRD QUARTER 1983 F

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DATA TABLES' i

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!. SAMPLE TYPE, STATION AND COLLECTION DATE I

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s VIRGIN I A EL ECTR IC C P0hER CCMPANY NORTH ANNA POWER ST A TI ON EXPOSURE PATHWAY - AIRBORNE

_ AIR PARTICULATE C CHARCOAL FILTERS ST AT ION NUMBER C1-ONSITE-0.2 MI.42 DEG CCLL. T I ME - AP FIL TER PID-COUNT CH A RCO AL FILTER r START STOP CROSS RETA TIME I-131 i DATE- DATE VOLUME UNITS (PCI/CU. M ) DATE TIME ( PC I/ CJ . M I 06/28 07/05 1.35E 02 CU . M 1.8 +- 0.5 E- C2 07/15 L.T. 7. E-03 07/05 07/12 1.34E 02- CU. M 2.8 +-0.6 E-02 07/24 L.T. 2. E-02 07/12 07/19 1.35E 02 CU. M 3.8 +-0.6 E-02 07/27 L.T. 1. E-02 07/19 07/26 1.33E 02 CU. M .2.8 +-0.6 E- 02 09/09 -L.T. 2. E-02 T 07/26 08/02 1.33E 02 CU . M 3.4 +-0.6 E-02 08/13 L.T. 9. E 08/02 08/09 1.32E 02 CU. M 3.0 +-0.6 E-02 08/22 L.T. 2. E-02 08/09 08/16 1.34E 02 CU. M 2.7 +-0.6 E-02 08/23 L.T. 2. E-02 08/16 08/23 1.34E 02 CU. M 3.9 +-0.7 E 09/02 L.T. 1. E-02 08/23 08/30 1.34E 02 CU. M 3.3 +-0.6 E-02 09/08 L.T. 1. E-02 08/30 09/06 1.32E 02 CU. M 3.1 - +-0.6 E- 02 09/16 L.T. 1. E-02 09/06 09/13 1.36E 02 CU. M 1.6 +-0.5 E-02 09/21 L.T. 1. E-02 09/13 09/20 1.33E 02 CU. M 3.2 +-0.6 E-02 09/26 L.T. 8. E-03 09/20 09/27 1.29E 02 CU. M 2.7 +-0. 7 E-02 10/05 L.T. 2. F-02 4

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V IRGIN I A' ELECT 41C C. P0h5R COMPANY NORTH ANN A POWER STATION EXPOSURE PATHWAY - AIRBORNE l AIR- PARTICUL ATE C CHARCOAL FILTEPS STATION NUMBER e C2 FREDER ICKS . HALL-5.3- MI . 225 DEG.

COLL. TIME AP FIL TER WI D-C CU NT CH ARCO AL FILT ER START STOP CR3SS BETA TI FE . 1-131 DATE DATE -VOLUME UNITS (PCl/CU. M l. DATE TIME ( PC I/ CJ . M i 06/28 07/05 1.39F 02 CU. M 1.3 +-0.5 E-02 07/15. L.T. 6. F-03 07/05 07/12 1.38E 02 CU . M . . 2. 3 +-0.6 E 07/24- L.T. 7. E-03

07/12 07/19 1.39E 02 CU. M 3.3 +-0.6 E-02 07/2T L.I. 1. E-02 07/19 07/26 -1.37E 02 CU. M 2.1 +-0.5 E-02 04/09 L.T. 2. 'E-02 07/26 08/02 1.37E 02 CU. M 1.2 +-0.6 E- 02 04/13 L.T. 8. E-03 08/02 08/0? 1.36E 02 CU. M .2.6 +-0.6 E-02 08/22 L.T. 2. E-02 08/09 08/16 -1.38E 02 CU . M 2.1 +-n.5 E-02 08/24 L.T. 1. E-02 08/16 08/23 1.3BE 02 CU. M 4.0 +-0.6 E-02 (a) 08/23 08/30 1.37E 02 CU . M 2.9 +-0.6 E- 02 09/07 L.T. 1. E-02 08/30 09/06 1.37E 02 CU. M -2.7 +-0.6 E-02 09/17 L.T.- 1. E-02 09/06 09/13 1.38E 02 CU. M 3. 3 +-0.6 E-02 09/21 L.T. 1. E-02 09/13 09/20 1.39E 02 CU . M .3.1 +-0.6 E-02 09/26 L.T. 6. E-03 09/20 09/27 1.38E 02 CU. M 2.1 +-0.6 E-02 10/05 L.T. 1. .E-02 (a) Charcoal -- 08/16-08/23 -- I-131 -- Sample lost in analysis.

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V IRG IN I A FLECTRIC & P0hER CCMPANY N3RTH ANNA POWER ST A TI ON EXPOSUR E P ATHWAY - AIRBORNE AIR P ARTICUL ATE & CHARCCAL FI L TE RS STATION NUMBER C3 M IN ER AL-7.1 M I .24 3 DEG. .

~

CCLL. TIME AP F IL TER PIO-COUNT CHARCO AL F ILT ER START .STOP GROSS BETA TIPE- I-131 OATE DATE V OLUM E UNIT S IPCI/CU. M'l DATE TIME ( PCI/ CJ. M I 06/28 07/05 1.38E 02' CU . M 2.3 +-0.6 E-02 07/15 L.T.. 7. E-03' 07/05 07/12 1.38E 02 CU.'M 2. 5 +-0.6 E- C2 07/24 L.T. 1. F-02 07/12 07/19 138E 02 CU . M 3.7 +-0.6 E 07/28 L.T. 2. E-02 07/19 07/25 1.38E 02. CU. M 3.2 +-0.6 E-02 08/09 L.T. 2. E-02 07/26 08/02 1.38E 02 CU. M 2.9 +-0.5 E-02 OR/13 L.T. 8. E-03 08/02 08/09 138E 02 CU. M 3. 3 +-0.6 E- 02 09/22 L.T. 2. E-02

.08/09 08/15 1.38E 02 CU . M 2.6 +-0.6 E-02 08/24 L.T.- 1. E-02 08/16 08/23 1.38E 02 CU. M 4.6 +-0. 7 - E-02 (a) 08/23 08/33 1.39E 32 CU. M 3.5 +-0.6 E-02 09/07 L.T. 1. E-02 08/30 09/05 1 36E 02. CU . M 2.9 +-0.6 E-02 09/17 L.T. 8. E-03 09/06 09/13 1.38E 02 CU. M 3.7 +-0.6 E-02 09/21 L.T. .l. E-02 09/13 09/23 1.38E 02 CU. M 4.1 +-0.6 E-02 09/28 L.T. 1. E-0?

09/20.09/27 1.38E 02 CU . M 2.7 +-0.6 E-02 10/05 L.T. 2. E-02 Charcoal 08/16-08/23 -- I-131 -- Sample lost in analysis.

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V IRGIN I A ELECTR IC ; C P0 kER CCMPANY NORTH ANNA POWER STATION EXPOSURE P ATHWAY - AIRHORNE AIR P ART ICUL ATE C CHARCOAL - FI L TER S STAT ION NUMBER C4 W ARES CROSSR3 ADS-5.1 MI.2e 7 DEG.

CCLL. T I ME AP F IL TFR PI O-C CU NT CHARCOAL FILT ER START STCP GROSS BETA TIME I-131 DATE DATE V OLU ME UNIT S IPC1/CU. M 1 DATE TIME IPCI/ CJ. ' M )

06/28 07/05 1.38 E 02 CU. M 2.0 +- 0.5 E- 02 07/15 L.T. 9. E-03 07/05 07/12 1.39E 92 CU . M 2.4 +-0.6 E- 02 07/24 L.T. 1. E-02 07/12 07/19 1.38E 02 CU . M 2.8 +-0.6 E-02 07/27 L.T. 1. E-02 07/19 07/26 1.37E 02 CU. M- 2. 3 +-0.5 E- 02 08/11 L.T. 2. E-02 07/26 08/02 1.36E 02 CU . M 2.9 +-0.6 E-02 08/13 L.T. 9. E-03 08/02 00/09 1.38E 02 CU. M 2.4 +-0.6 E-02 09/22 L.T. 2. E-02 08/09 08/16 1.38E 02 CU. M 2.1 +-0.5 E- 02 08/24 L.T. 1. E-02 08/16 08/23 1.38E 02 CU . M 3.5 +-0.6 E-02 09/02 L.T. 2. E-02 08/23 08/30 1.38E 02 CU . M 2.6 +-0.5 E-02 09/07 L.T. 1. E-02 08/30 09/06 1.35E 02 CU. M 2.8 +-0.6 E-02 09/18 L.T. 2. E-02 09/06 09/13 1.38E 02 CU. M 2.3 +-0.5 E-02 09/21 L.T. 1. C-02 09/13 09/20 1.39E 02 CU . M 3.1 +-0.6 E-02 09/27 L.T. 1. E-02 09/20 09/27 1.64E 02 CU . M 2. 3 +-0.5 E- 02 10/05 L.T. 2. E-02

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o o o V IRGIN I A EL ECTR IC C P0hER CCMPANY NORT H ANNA POWER STATION EXPO SUR E P ATHWAY - A IRBORNE AIR P ARTICUL ATE C CHARCO4L FILTERS ST AT ION NUMBER C5 GOOD HOP E . CFURC H-4.2 MI .2C DEG.

C OL L. .. T I ME AP F IL TER FI D-C CU NT CHARCOAL FILTER START STOP CR3SS RCTA TIFF I-131 1 DATE D ATE . VOLUME UNIT S iPCt/CU. M i DATE TIPE (PCI/CJ. M i

.06/28 07/05 1.38E 02 CU. M 1.7 +-).5 E-02 07/15 L.T. 7. E-03 07/05 07/12 1.40E 02 CU . M 1.T +-0.5 E 07/24 L.T. 1. E-02 07/12 07/19 1.39E 02 CU . M 4.3 +-0.7 E-02 07/27 L.T. 1. E-02 07/19 07/26 1.39E 02 CU. M 2.8 +-0.6 E-02 09/11 L.T. 2. E-02' 07/26 08/02 1.39E 02 CO. M 3.3 +-0.6 E-02 08/13 L.T. 8. E-03 08/02 08/09 1.36E 02 CU. M 3.1 +-0.6 E-02 08/22 L.T. 2. E-02 08/09 08/16 1.33E 02 CU . M 2.5 +-0.6 E-02 08/24 L.T. 1. E-02 08/16 08/23 1.39E 02 CU. M 4.6 +-0.7 F-02 09/02 L.T. 2. E-02 08/23 08/30 1. 39 E 3 2 - CU. M 3.7 +-0.6 E-02 09/07 L.T. 1. E-02 08/30 09/06 1.38E 02 CU. M 2.9 +-0.6 E-02 09/18 L.T. 1. E-02 09/06 09/13 1.41E 02 - CU. M 3.0 +-0.6 E-02 09/21 L.T. 2. E-02 09/13 09/20 1.38E 02 CU. M 3,A.+-0.6 E-02 09/26 L.T. 7. E-03 09/20 09/27 1.39E 02 CU. M 3.! +-0.6..E-02 10/05 L.T. 1. 'E-02 n

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. AIR PARTICULATE 0 CHARCOAL FILTERS ST AT ION NUMBER CSA STURGE 0N'S CdEEK-3.2 MI . 11 DEG.

CCLL. TI ME AP F IL TER PI D-C CU NT CFARCOAL FILT ER START .STOP GR3SS BETA TIPE .

1-131 DATE D AT E V OLU ME UNIT S (PCI/CU. M 3 DATE TIME - ( PC I/ CU . M-1 06/28 07/05 1.34E 02 CU . M . 2.0 +-0.6 E-02 07/15' L.T. 8. E-03 07/05 07/12 1.35E 02 Cu. M .2.2 +-0.6 E-02 07/24 L.T. 1. E-02 07/12 37/19 1.35E 02 CU . M 3.7 +-0.6 E-02 07/27 L.T. 1. E-02 07/19 07/26 1.33E 02 CU. M 2.7.+-0.6 E-02 08/10 L.T. 2. E-02 i 07/26 08/02 1.34E 02 CU. M 3.1 +-0.6 C- 02 08/13 L.T. 8. E-03 08/02 08/09 1.32 E .0 2 CU. M 2.1 +-0.6 E- 02 08/22. L.T. 2.' E-02 08/09 08/16 1.40E 02 CU . M 2.5 +-0.6 E-02 08/24 L.T. 1. E-02 08/16 08/23 1.34E 02 CU..M 3.1 +-0.6 E-02 09/02' L.T. 1. E-02 08/23 08/30 1.34E 02 CU . M I.9 +-0.5 E-02 09/07 L.T. 1. E-02 08/30 09/05 1.34E 02 CU . M 2.9 +-0.6 E-02 09/18 L.T. 1. E-02 09/06 09/13 1.36E 02 CU. M 3.0 +-0.6 E-02 09/21 L.T. 1. E-02 09/13 09/20 1.32E 02 CU. M 3.0 +-0.6 E-02 09/27 L.T. 1. E-02 09/20 09/27 1.33E 02 CU. M 2.1 +-0.6 E-02 10/05 L.T. 1. E-02

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VIRGINI A ELECTRIC C P0hER COMPANY NORTH ANNA POWER STATION EXPOSURE P ATHWAY - AIRBORNE AIR P ARTICUL ATE C CHARCOAL FIL TERS ST AT ION NUMBER Ce L EVY-4.7 M I .115 DEG.

- C CLL. T I ME AP . F IL TER FI D-C CUNT CHARCOAL FILTER START STOP GROSS HETA TIME I-131 DATE DATE VOLUME UNIT S (PCI/CU. M 1 DATE TIME (PCI/ CJ. M )

06/28 07/05 1.36E 02 CU . M ' l.4 +-0.5 E- 02 07/15 L'. T . 6.- E-03 07/05 07/12 1.37E 02 CU . M 2.1 +-0.6 E-02 07/24 'L.T. 7. E-03 07/12 07/19- 1.38E 02 CU. M 2.3 +-0.5 E-02 07/27 L.T. 2. E-02

, 07/19 07/26 1.34E 02 CU . M 2.6 +-0.6 E- 02 08/11 L.T. 1. E-02 07/26 08/02 1.37E 02 CU . 4 2.3 +-0.5 E-02 08/13 L.T. 7. C-03 08/02 08/09 1.36E 02 CU. M 2.2 +-0.6 E-C2 OR/22 L.T. 2. E-02 08/09 08/16- 1.38 E 02 CU. M 2. 3 +-0.5 E- 02 OR/ 24 . L.T. 1. E-02 08/16 08/23 1.38E 02 CU. M 3.0 +-0.6 E-02 09/02 L.T. 1. E-02 08/23 08/30 1.37E 02 CU. M 2.8 +-0.6 E-02 09/07 L.T. 1. E-02

, 08/30 09/06 1.37E 02 CU . M 1.9 +-0.5 E-02 09/18 L.T. 2. E-02 09/06 09/13 1 38E 02 CU . M 2.3 +-0.5 E-02 .09/21 L.T. 2. E-02 09/13 09/20 1.37E 02 CU . M 6.1 +-0.7 E-02 09/27 L.T. 1. E-02 1 09/20 09/27 1.37E 02 CU. M 1.7 +-0.6 E-C2 10/05 L.T. 1. E-02 3

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VIRGINIA EL ECTR IC C . POWER CCFPANY NORTH ANNA POWER STATION EXPOSUME P ATHWAY - AIRBORNE AIR PAMT ICUL ATE C CHARCOAL FILTERS STATIGN NUMBER C7 BUMP ASS-7. 3 M I .167 DEG.

CCLL. TIME' AP F IL TER FI D-C CU NT C H ARCO AL FILTER START STOP GROSS BETA . TI PE I-131 OATE DATE V OLU ME UNIT S (PCI/CU. M 3 -DATE TIME ( PC I/ CO . . M I 06/28 07/05 1.33E 02 CU . M 2.6 +-0.6 E-02 07/15 L.T. 7. E-03 07/05 07/12 1.32E 02 CU. M 1. 7 +-0.6 E- C2 07/24 L.T. 8. E-03 07/12 07/19 1.32E 02 CU. M 3.7 +-0.6 E-02 07/27 L.T. 1. E-02 07/19 07/26 '1.33E 02 CU . M 3.3 +-0.6 E-02 OR/11 L.T. 2. E-02 '

07/26 08/02 1.32E 02. 00. H 2.8 +-0.6 E-02 08/13 L.T. 7. E-03 08/02 08/09 1.31E 02 CU. M 2.8 +-0.6 E-02 08/22 L.T. 2. E-02 08/09 08/16- 1.33E 02 CU . M 2.2 +-0.6 E-02 OR/24 L.T. 1.. E-02 08/16 08/23 1.33E 02 CU. M 3. 3 +-0.6 E-02 09/02 L.T. 2. E-02 08/23 08/30 1.30E 02 CU. M 3.3 +-0.6 E-02 09/07 L.T. 2. E-02 08/30 09/05 1.32E 02 CU. M 2.1 +-0.5 E-02 09/18. L.T. 2. E-02 09/06 09/13 1.34E 02 CU. M 3.0 +-0.6 E-02 09/21 L.T. 2. E-02 09/13 09/20 1.33E 02 CU . M 3.6 +-0.6 E-02 09/27 L.T. 1. E-02 09/20 09/27 1.32E 02 CU . M 2.1 +-0.6 E- 02 10/05 L.T. 1. E-02

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VIRGIN I A ELECTRIC C PohER CCMPANY NDRT H ANNA POWER STA TIGN EXPOSURE P ATHWAY - AIRBORNC AIR P ARTICUL ATE C CHARCOAL FIL TERS STAT ION NUMBER 21 ROUT E 68 5- 1.0. M I. 301 UEG.

CCLL. TIME AP FIL TER P10-C00NT CHARCOAL FILT ER START STOP GROSS BETA TIPE I-131 .

DATE DATF VCLUME UNITS .(PCI/Cu. M IL DATE TIM- E PCI/ CJ. M I 06/28 07/05 1.34E 02 CU . M : 1. 2 +- 4. 7 E- 0 3 07/15 L.T. 8. E-03 07/05 07/12 1.41E 02 CU. M 1.6 +-0.5 E-02 07/24 L.T. 1. E-02 07/12 37/19 1.41E 02 CU. M 1.8 +-0.5 E- 02 07/27 L.T. 1. E-02 07/19 07/25 (a) 3.3 +-0.7 E 00 08/10' L.T. 2. E s0 1.

07/26 08/02 1.40E 02 CU. M 2.1 +-0.5 E-02 08/13 L.T. 1. E-02 08/02 08/09 1 41E 02 CU. M 3.0 +-n .5 E- 02 . 08/22 L.T. 2. E 08/09 08/15 141E 02 CU. M 2.1 +-0.6 E-02 08/24- L.T. -1. E-02 08/16 08/23 1.41E 02 .CU. M 2.4 +-0.5 E-02 09/02 L.T. '2. E-02 08/23 08/33 1.42E 02 CU. M 2.0 +-0.5 E- 02 09/08 L.T. 2. E-02 08/30 09/06 1.41E 3 2 CU . M 2.3 +-0.5 E-02 09/18 L.T. 1. E-02 09/06 09/13 1.41E 02 CU . M 1.8 +-0.5 E-02 09/21 L.T. 2. E-02 09/13 09/23 1.40E 02 CU. M 3.0 +-0.6 F- 02 09/27 L.T. 't. E-02 09/20 09/27 1.41E 02 CU . M 1.5 +-0.5 E-02 10/05 L.T. 1. E-02 (a) 07/19-07/26 Malfunction of flowmeter. No volume recorded Gross B and I-131 units Total PCI.

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l V IRGIN I A ELECTRIC C POhER COPPANY NORTH ANNA F0WER STA TION

/ EXPOSURE P ATHWAY - AIRBCRNE '

AIR PARTICUL ATE C CHARCOAL FILTERS A

STATION NUMBER- 22 ROUT E 700- 1.0 M I .24 2 DEG.

-CCLL.-TIME AP FIL IER ' FI D-C CUNT CHARCOAL F I LT ER START STCP CR355 BETA TIPE I-131-DATE .DATE VOLUME UNITS. .IPCI/CU. M I DATE TIPE I PC I/ CJ . . M l.

06/28 07/05 138E 32 CU. M' 2.6 +-0.6 E-02 07/15 L.T. 7. E-03 07/05 07/12 1.38E 02 CU. M 2.9 +-0.6 E-02 07/24 L.T. 2. ~E-02 07/12 07/19 1.38E 02 CU. M 3.3 +-0.6 E-02 07/27 L.T. 1. E-02 i 07/19 07/26 1.38E 02 CU. M 2.1 +-0.5 E-02 08/10 L.T. 2. E-02 i-3

-07/26 08/02 1.38E 02 CU . M 2.7 +-0.5 (-02. 08/13 L.T. 7. E-03 01/02 08/09 1.38E 02 CU . M 2.6 +-0.6 E-02 08/22 L.T. 2. E-02 08/09 08/16 1.39E 02 CU. M 2.9 +-0.6 E- 02 08/24 L.T. 1. E-02 08/16 08/23 1.3SE 02 CU . M 1.5 +-0.5 E-02 09/02 L.T. 2.- E-02 08/23 08/33 NOT C OLLECT EC j

08/30 09/06 1 38E 02 CU. M - 3. 2 +-0.6 E-(02a) 09/18

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L.T. 1. E-02 09/06 09/13 1.39E 02 CU. M 3.9.+-0.6 E-02 09/21 L.T. 1. E-02 09/13 09/20 1.38E 02' CU . M 3.3 +-0.6 E-02 09/27 L.T. 1. E-02 j 09/20 09/27 1.25E 02. CU. M 2.5 +-0.6 E-02 10/05 L.T.- 1. E-02 1-1 i

l 1 (a) 08/23-08/30 3 Air Particulate Filter and Charcoal Filter not collected 1 malfunction of sampling device.

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V IRGIN I A ELECTR IC C P0bER CCPPANY N3RTh ANNA POWER STATION EXPOSURE P ATHWAY - A198CRNE AIR P AR T ICUL ATE E CHARCOAL F I L TF HS ST AT ION NUMBER 23 ASPEN FILL S-0.9 N I .15e OEG.

COLL. TIME AP FIL TER WID-CCUNT CHARCOAL FILT ER START STOP GR3SS BETA TIFF I-131 4 DATE . D ATE VOLUME UNITS IPCI/CU. M i DATE'TIPE I PC I/ CU . . M )

06/28 07/05 1.37E 02 CU . M 2.1 +-0.6 E-C2 07/16 L.T. 7. E 07/05 3F/12. 1.37E 02 CU. M 2.6 +-0.6 E- 02 07/24 L.T. 1. E-02 07/12 37/19 1.38 E 02 CU . M 1.6 +-0.6 E-02 07/27 L.T. 1. E-02 07/19 07/26 1.36E 02 LU. M 2.8 +-0.6-E-02 08/10 L.T. 1. E-02 d

07/26 08/32 136E 02 CU . M 2.9 +-0.6 E-02 OR/16 L.T. 7. E-03 08/02 08/09 1.36E 32 CU. M 2.9 +-0.6 E-02 OR/22 L.T. 2. E-02 4 08/09 08/15 1.34E 02 CU . M -(a) ADT C OLLECT EC 08/16 08/23 1.02E 02 CU. M 4.9 +-0.8 E-02 09/03 L.T. 2. E-02 08/23 08/30 1.38 E 3 2 CU . M 2.6 +-0.5 E-02 09/08 L.T. 1. E-02 08/30 09/06 1. 39 E 0 2 - CU . M 2.8 +-0.6 E-02 09/18 L.T. 1. E-02 09/06 09/13 1.37E 02 CU. M 1.2 +-0.5 E-02 09/21 L.T. 1. E-02 09/13 09/23 1.40 E 02 CU . M 3.9 +-0.6 E- 02 09/28 L.T. 1. E-02 09/20 09/27 1.38E 02 CU. M 3.0 +-0.6 E-02 10/05 L.T. 1.' E-02 i

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EXPOSURE P ATHWAY - AIRBORNE AIR P ANT v3tL ATE C CHARCOAL FIL TE45 ST AT IO4 NUMBER 24

'OT ANGE-22.0 MI .325 DEG. ICON TROL)

CCLL.- TI ME AP F IL TER Plu-CCUNT CHARCOAL FILT ER START STCP GROSS RETA TIPE I-131 DATE DATE VOLJME UNITS IPCI/CU. M I D ATE TIME ~ I P C I / CJ . M i 06/28 07/05 1.48 E 02 CU. M 1.7 +-0.5.E-02 07/15 L.T. T. E-03 07/06 07/12 1 15E 02 CU. M 2.4 +-0.7 E-02 07/24 L.T. 1. E-02 07/12 07/19 .1.31E 02 CU. M 3.9 +-0.7 E- 02 07/27 L.T. 1.' E-02 07/19 07/26 1.77E 02 CU . M 2.7 +-0.5 E- 02 '08/10 L.T. 9. E-03 07/26 08/02 1.48E 02 Cu . M 2.9 +-0.5 E-02 08/13 L.T. .2. E-02 08/02 08/09 1.42E 02 -CU. M 2.4 +-0.5 E- 02 OR/22 L.T. 2. E-02 08/09 08/15 1.38E 02 CU. M 2.5 +-0.6 E-02 08/24 L.T. 9. F-03 08/16 08/23 1.3FE 02 CU . M 3.0 +-0.6 E- 02 09/02 L.T. 2. E-0 2 08/23 08/33 1.26E 02 CU. M 2.1 +-0.6 E-02 09/08 L.T. 2. E-02 08/30 09/06 1 12E 02 CU. M 1.9 +- 0.6 E- 0 2 09/18 L.T. 1. E-02 09/06 09/13 1.02E 02 CU . M 2.F.+-0.7 E-02 09/21 L.T. 2. E-02 09/13 09/23 1.32E 02 CU. M 3. 2 +-0.6 E- 02 09/27 L.T. 7. E-03 09/20 09/27 1.39 E 02 CU . M . 2.5 +-0.6 E- 02 10/05 L.T. .2. E-02

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O O O VIRGIM I A ELECTR IC C P0hER CCMPANY NORTH ANNA POWER STA TION EXPOSURE P ATHWAY - AIRBORNE COMPOS ITE . AIR P AR TICULA TE FILTERS IPCI/CU. M )

ST AT ION NUMBER C1 01 SITE-0.2 MI.42 DEG D ATE CCLLECTED 06/28-09/27 GAPPA S PEC TRUP AN ALYS IS BE-T 6.60+-1.91F-02 E-40 L.T. 5. E MN-54 L .T . 2. E-03 $

CC-58 L.T. .2. E-03 FE-59 L.T. 6. E-03 C O-60 L.T. 2. E-03 ZN-65 L.T. S. E-03 2R-95 L.T. 3. E-03 RU-103 L.T. .3. E-03 RU-106 L .T . 2. E-02 1-131 L.T. 2. E-02 CS-134 L.T. 2. E-03 CS-137 L .T . 2. E-03 BA-140 L.T. 9. E-03 CE-141 L.T. 4. E-03 C E -144 L.T. 1. E-02 RA-226 L .T . 3. E-02 TH-228 -L.T. 3. E-03 n

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VIRGIN I A ELEC TR IC C P0bER CCPP ANY NORTH ANN 4 POWER STA TION EX PO SUR E . P AT HW A Y - AIRBORNE-COMPOS ITE AIR PAR TICUL A TE FIL TER S IPCI/CU. M i STATION NUMBER C2 FREDER ICKS HALL-5.3 MI. 225 OEG.

DATE, COLLECTED 06/28-09/27 GAPPA SPECTRUP AN ALYS IS BE-7 T.15+-1.19E-02 K-40 L.T. 2. E-02 PN-54 L.T. 1. .E-03 C O-5 8 L.T. 1. E-0 3 FE L.T. 3. E-03 C0-60 L.T. 1. E-03 Z N-65 _L.T. 3. E-03 ZR-95 L .T . 1. E-03 RU-103 L.T. 1. E-03 RU-106 L.T. 9. E-03 I-131 L .T . 1. E-02 CS-134 L.T. 9. E-04 CS-137 L.T. 1. E-03 BA-140 L.T. 6. E-03 CE-141 L.T. 3. E-03 CE-144 L.T. 7. E-03 RA-226 L.T. 2.. E-02 TH-228 L .T . 2. E-03 7

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. VIRGIN I A ELECTRIC E PubER CCFPANY N3RTH ANNA POWER 5TATION EXPOSURE P ATHWAY - AIRBORNE COMPOS ITE AIR PAR TICLLATE FILTER $

IPCI/CU. M i STATIO4 NUMBER C3 MIN ER AL-T.1 MI .24 3 DEG.

CATE CCLLECTED 06/ 28-09/ 2 F GAPPA SPECTRUP AN ALYS IS BE-T 8.35+-1.55E-02 E-40 L.T. 3. E-02 PN-54 L.T. 1. E-03 ' ' '-'

CC-58 L.T. 2. E-03 FE-59 L.T. 4. E-03 C0-60 L.T. .- i-03 2N-65 L.T. 3. E-03 ZR-95 L.T. 1. E-03 RU-103 L.T. 2. E-03 RU-106 L.T. I. E-02 I-131 L.T. 1. E -0 2 CS-134 L .T . 1. E-03 CS-13T L.T. 1. E-03

-SA-140 L.T. 6. E-03 CE-141 L.T. 2. E-0 3 CE-144 L .I . 6.- E-03 RA-226 L.T. 2. E-02 TH-2 2 8 L.T. 2. E-03

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13RTP A*4t4A POWER STATION EXPOSURE PATHWAY - AIRBURNL COMPOSITE All P AR TICLLATE FILTER S IPCI/CU. M 1 STATION NLMBER C4 W ARES CROSSRDADS-5.1 M t.2P1 DEG.

DATE COLLECTED 06/28-09/27 GAPPA SPECTRuP ANALYSIS BE-7 6. 50 +- 1.91 E-0 2 K-40 L.T. 5. E-02 MN-54 L.T. 2. E-03 5; CO-58 L.T. 2. E-33 FE-59 L.T. 5. E-03 C0-60 L.T. 2. E-03 2h-65 L.T . 5. E-03 2R-95 L.T. 2. E-03 RU-103 L.T. 2. E-03 RU-106- L .T . 1. E-02 I-131 L.T. 2. E-02 CS-134 L.T. 2. E-03 CS-13T L.T. 2. E-03 BA-140 L.T. P. E-03 CE-141 L.T. 3. E-03 CE-144 L.T. 8. E-0 3 RA-226 L.T. '2. E-02 TH-228 L.T. 3. E-03 7

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r-O- .O Oi' VIRGINIA ELEC)RIC C PubER COMPAhi-NORTH ANNA POWER STATION EXPOSURE P ATHWAY - AI480ANE COMPOS ITE AIR PAR TICLLATE F IL TER S (PCI/CU.'M )

ST AT ION NUMBER C5 GOOD HOPE CHURCH-4.2 MI .2C UEG.

DA TE COLLECTED 06/28-09/27 GAPPA SPECTRUM ANALYS IS BE-7 9.20+-1.38E-02 K-40 L.T. '2. F PN-54 L.T. .9. E-04 :- )

C O-5 8 L.T. 1. ' E-0 3 .

FE-59 L.T. 3. E-03 C0-60 L.T. 1. E-03 ZN-65 L.T. 3. E-0 3 ZR-95 L.T. 1. E-03 RU-103 L.T. 1. E-03 j

RU-106 L.T. 9. E-0 3 I-131 L .T . 1. E-02 l CS-134 L.T. 1. - E-03 CS-137 L.T. I. E-03 i BA-140 L.T. 5. E-03 l CE-141 L .T . 2. E-03

} CE-144 L.T. 6. E-03

R A-22 6 L.T. 2. E-0 2 TH-228 L .T . 2. E-03 i

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(PCI/CU. M )

l STATION NUMBER C'A

1 S TURGE0N 'S CR EEK- 3.2 MI . 11 DEG.

i j DATE CCLLECTED 0 6/ 28-09/ 2 T i

l' GAPMA SPECTRUP ANALYS IS

} BE-T 8.26+-1.34F-02 j E-40 L.T. 2. E-02 i PN-54 L.T. 1. E-03 1 i C C-5 8 L.T. 1. E-03 i F E-59 L.T. 4. E -0 3 i C C-60 L .T . 2. E-03 ZN-65 L.T. 3. E-03 t ZR-95 L.T. 2. -E-03

j. RU-103 L.T . 2. E-03 i RU-106 L.T. 1. F-02 i

I-131 L.T. 1. E-02 CE-134 L.T. 1. E-03 CS-137 L.T. 1. E-03

. BA-140 L.T. 5. E-03 i CE-141 L .T . 3. E-0 3 CE-144 L.T. 7. E-03

{ RA-226 L.T. 2. E-02 TM-22 8 L.T. 2. E-03 i

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~ EXPO 5URE PATHWAY - AIRBORNE COMPOS ITE AIR P AR TICLLA TE .FILTE R S (PCI/CU. M i STAT ION NLMBER E6 L EVY-4.7 M I .115 DEG.

-DATE COLLECTED -36/28-09/27 GAPPA SPECTRUP AN ALYS IS BE-7 6.02+-1.84E-02 E-40 L.T. 5. E-02 MM-54 L.T. 2. E-03 C0-58 L .T . 3. E-03 FE-59 L.T. 6. E-03 C D-60 L.T. 2. E -0 3 .

ZN-65 L.T . 6. E-03 ZR-95 L.T. 3. E-03 RU-103 L.T. 3. E-03 RU-106 L .T . ' , 2. E-02 1-131 L.T. 2.- E-02 CS-134 L.T. 2. E-03 C S-137 L.T. 2. - E-0 3 8A-140 L.T. 8. E-01 CE-141 L.T. 4. E-05 CE-144 L.T. 1. E-02 RA-226 L.T. 3. E-02 TH-228 L.T. .3. E-03 n

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VIRGINIA ELECTRIC E PohER CCPPANY 43RT H ANN A POWER STATION EXPOSURE PATHWAY - AIRBORNE

. COMPOS ITE AIR PARTICLLATE FILTER S IPCI/CU. M i STATION NUMBER C7 BUMP ASS-7.3 M t.167 DEG.

DATE CCLLECTED 06/28-09/27 GAPPA SPECTRUP ANALYS !$

BE-T 7.42+-1.33E-02 K-40 L.T. 2. E-02 PN-54 L.T. -1. E-03 't CO-5 8 L.T. 1. E-03 .

FE-59 L .T . 3. E-03 C D-60 L.T. 2. E-03 ZN-65 L.T. 3. E-03 2R-95 L.T. 1. E- 01 RU-103 L.T. 2. E-03 RU-106 L.T. 1. E-02 1-131 L.T. 1. E-02 CS-134 L.T. 1. E-93 CS-137 L.T. 1. E-03 BA-140 L.T. 5. E-03 CE-141 L .T . 3. E-03 CE-144 L.T. 8. r-03 RA-226 L.T. 2. f-02 TH-228 L .T . 3. E-03 n

t VIRGINIA ELECTRIC E PohER COPPANY 43RTH ANNA P0hER STATION ,

EXPOSURE P ATHWAY - AIRBORNE -'

COMPOS ITC AIR P AR TICOLA TE FILTER S

-IPCI/CU. M l.

STATION NUMBER 21- !

ROUTE 685-1.0 MI.3C1 DEG. lp

- DATE CCLLECTED 06/28-09/27 GAP;A SPECTRUP ANALYS IS

~

RE-7 5.3T+-1.41E-02 K-40 L.T. 3. E -0 2 MM-54. L.T. 1. E-03 i CC-58 L.T. 2. F-03 FE-59 L.T. 5. E-03 CD-60 L.T. 2. E-03 ZN-65 L.T. 4. E-03 ZR-95 L.T. 2. E-03 RU-103 L.T. 2. E-03 RO-106 L.T. 1. E-02 I-131 L.T. 1. E-02 CS-134 L.T. 2. E-03 CS-137 L .T . 1. E-03 84-140 L.T. 7. F-03 CE-141 L.T. 3. E-03 CE-144 L.T. 7. E-0 3 RA-226 L.T. 2. E-02 TH-228 L.T. 2. E-03

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DATE COLLECTED 06/28-09/27 GAPPA SPECTRUP AN ALYS IS BE-7 5.78+-2.0ME-02 K-40 L.T. 6. E-02 PN-54 L.T. 2. E-03 C0-58 L.T. 2. E-03 FE-59 L.T. 6. E-03 C C-60 L.T. 2. E-03 ZN-65 L .T . 5. E-03 2R-95 L .T . 2 E-03 RU-103 L.T. 3. E-03 RU-10 6 L.T. 2. E-02 1-131 L.T. 2. E-02 CS-134 L.T. 2. E-03 CS-137 L.T. 2. E-03 84-140 L.T. 6. E-03 CE-141 L.T. 4. E-03 CE-144 L.T. 9. E-03 R A-22 6 L.T. 3. E-02 TH-228 L .T . 3. E-03 l

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w.J VIRGIN I A ELECTRIC L P0 bed CCMPANY N3RTH ANNA POWER STATION EX POSUR E P ATHh AY - AIRBORNE COMPOS ITE A IR PAR TICLL A TE F I L TE R S IPCI/CU. M i STAT ION NUMBER 23 ASPEN F ILL S-C.9 M I .156 DEG.

DATE CCLLECTED 06/28-09/27 GAPTA SPECTRUP AN ALYS IS BE-7 8.35+-l.51F-02 k-40 L.T. 2. E-02 MN-54 L.T. 1. E-03 CC-58 L.T. 1. E-03 FF-59 L.T. 3. E-03 CC-60 L.T. 1. E-03 Z h-6 5 L.T. 3. E-03 Z R-9 5 L.T. 1. E-0 3 RU-103 L .T . 2. E-03 RU-106 L.T. 9. E-03 I-131 L.T. 1. F-02 CS-134 L .T . 1. E-01 CS-137 L.T. 1. E-03 BA-140 L.T. 5. E-03 C E -141 L.T. 3. E-03 CE-144 L.T. 7. E-03 RA-226 L.T. 2. E-02 TH-2 2 8 L.T. 2. E -0 3

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(PCl/CU. M 1 ST AT ION NLMBER 24 OR ANGE-22.0 MI .325 DEG. tCON TRCL)

D A TE CCLLECTED 06/28-09/27 GA>>A SPECTRUP ANALYSIS BE-7 7.94+-l.57E-02 K-40 L.T. 2. E-02 MN-54 L .T . 1. E-03 7l C0-58 L.T. 1. E-03 FE-59 L.T. 3. E-03 C D-60 L.T. 2. f-01 IN-65 L .T . 3. E-03 ZR-95 L.T. 2. E-02 RU-103 L.T. 2. E-0 3 RU-106 L .T . I. E-02 I-131 L.T. 1. E-02 CS-134 L.T. 1. E-0 3 CS-13 7 L .T . 1. E-03 BA-140 L.T. 4. E-03 CE-141 L.T. 3. f-03 CE-144 L.T. 7. E-03 RA-226 L .T . 2. E-02 TH-228 L.T. 2. r-03 l

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VIRGIN I A ELECTR IC C P0hER CCPPANY N3RTH ANNA POWER STATION EXPOSURE DATHWAY - AIRBORNE WATER - PRECIPIIA TION

( PC I/L I TER I STAT ION NUMBER DATE COLLECTED 07/01-07/31 08/01-08/31 09/01-09/30 RADICCHEMICAL ANALYSIS GR-B 4.9 +-1.2 E 00 1.3 +-0.7 E 01 1.8 +-0.7 E 00 GR-B 2.0 +-0.2 E-01 3.4 +-0.3 E-01 1.9 +-0.1 E-01 Deposition nCi/Sq.M.

Rainfall 1.58 inches 1.04 inches 4.05 inches l

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V IR G IN I A EL EC TR IC L P0hER CCMPANY 43RTH ANNA POWER ST A TION EXPOSURE PATHWAY - AIRBORNE 50 i L IPCI/GM DRY )

STATION NUMBER C1 ONSITE-0.2 MI.42 DEG DATE CCLLECTED 0 1/ 19 RADI CCHEMIC AL ANALYSIS SR-89 L.T. 4. E-01 SR-90 L .T . 1. E-01 i

GAPPA SPECTRUP ANALYS!$

BE-7 L.T. 5. E-01 K-40 1.79+-0.18E 01 PN-54 L .T . 4. E-02 CC-58 L.T. 5. E-02 FE-59 L.T. 1. E-01 CO-oO L.T. 4. E-02 F N-6 5 L.T. 1. E-01 ZR-95 L .T . 7. E-02 RU-103 L.T. 6. E-02 RU-106 L.T. 4 E-01 1-131 L.T. 4. E-01 CS-134 L .T . 6. E-02 CS-137 1.68+-0.46E-01 BA-140 L.T. 2. E-01 CE-141 L .T . 1. E-01 CE-144 L.T. 4. E-01 RA-226 2. 33 +-0.75 E 00 TH-2 2 8 2.05 +-0.21 E 00 7

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STATION NLM8ER C2 FREDER ICK S HALL-5.3 MI . 225 DEG.

DA TE CCLLECTED 07/19 GAPPA SPECTRUP ANALYSIS BE-7 L.T. 5. E-01 K-40 8.15 +-0.8 2 E 0 0 MN-54 L.T. 4. E-02 '

CC-58 L.T. 4. E-02 FE-59 L.T. 1. F-01 C0-60 L.T. 4. E-02 ZN-65 L.T. 9. E-02 2R-95 L.T. 5. F-02 RU-103 L.T. 6. E-02 RU-106 L .T . 3. F-01 I-131 L.T. 4. F-Ol CS-134 L.T. 4. E-02 C5-137 1.29+-0 13E 00 BA-140 L.T. 1. E-01 CE-141 L.T. 1. E-01 CE-144 L.T. 3. E-01 RA-226 1.00+-0.56E 00 TH-228 3.79+-0.42E-01

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ST AT ION NUMBER C3 M INER AL-7.1 M I .24 3 DEG.

DA TE COLLECTED 07/19 GAPPA SPECTRUP AN A LYS IS RE-7 L.T. 4. E-01 K-40 4.71+-0.50E 00 MN-54 L.T. 3. E-02 .

00-58 L.T. 4 E-02 FE-59 L.T. 9. E-02 C0-60 L.T. 4. E-02 ZN-65 L .T . 1. E-02 2R-95 L.T. 5. E-02 RU-103 L.T. 5. E-02 RU-106 L.T. 3. E-01 1-131 L.T. 4. E-01 C5-134 L.T. 4. E-02 CS-137 5. 32 +-0.5 3 E-01 BA-140 L.T. 2. E-01 CE-141 L.T. 8. E-02 CE-144 L.T. 2. E-01 RA-226 9.4 8 +-4.20 E-01 TH-228 5.11+-0.51F-01

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STATION N UMB ER C4 W AR E S CROS SR OADS-5.1 MI .28 7 DEG.

DATE CCLLECTED 07/ 19 J

GAPPA SPECTRUM AN ALYS IS BE-7 L.T. 4. E-01 K-4 0 4.95+-0.50E 00 PN-54 L.T. 3. E-02 i C C-5 8 L.T. 4. E-07 FE-59 L .T . 1. E-01 CC-60 L.T. 3. F-02 2N-65 L.T. 9. E-0?

ZR-95 L.T. 5. E-02 RU-103 L.T. 5. E-02 RU-106 L.T. 3. E-01 1-131 L.T. 4. E-01 CS-134 L .T . 4. E-02 CS-137 5.91+-0.59E-01 84-140 L.T. 2. E-01 CE-141 L .T . 8. E-02 CE-144 L.T. 2. E-01 RA-226 1. 3 t +-0.4 5 E 00 TH-2 2 8 7.76+-0.78E-01

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DATE CCLLECTED 01/ 19 GAPPA S PE C T RU P AN A LYS IS BE-7 L.T. 4. E-01 K-40 1.19+-0.12E 01 PN-54 L.T. 4. E-02 CC-58 L.T. 4. E-02 FE-59 L.T. 9. E-07 C0-60 L .T . 3. F-02 Zh-65 L.T. 7. E-02 2R-95 L.T. 5. E-02 RU-103 L .T . 5. E-02 RU-106 L.T. 3. E-01 __-<.

1-131 L.T. 4. E-01 C S-13 4 L.T. 4. E-02 CS-137 3.33+-0.39E-01 -

BA-140 L.T. 2. E-01 _

CE-141 L .T . 9 E-02 CE-144 L.T. 2. E-01 RA-226 3.32+-0.63E 00 TH-228 1. 37 +-0.14 E 00

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ST AT ION N UMBER CSA STORGE DN 'S CREEK- 3.2 M I . 11 DEG.

DA1E COLLECTED 07/ 19 GAP ~A SPECTRUM AN ALYS IS BE-7 1.22+-0.29E 00 K-40 1.21+-0.12E 01 MN-54 L.T. 3. E-02 7 CC-58 L.T. 3. E-02 .

FE-59 L.T. 8. E-02 C C-60 L.T. 3. E-02 ZN-65 L .T . 7. E-02 2R-95 L.T. 4. E-02 RU-103 L.T. 4. E-02 RU-106 L .T . 2. E-01 1-131 L.T. 3. E-01 CS-134 L.T. 3. E-02 CS-137 3.42 +-0. 3 F E-01 BA-140 L .T . 1. E-01 CE-141 L.T. 8. E-02 CE-144 L.T. 2. E-01 RA-226 1.08 +-0.39 E 00 TH-228 5.67+-0.57F-01 0

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]' NORTH ANNA POWER STA TION EXPOSURE P ATHWAY - AIRBORNE 5 0 -I L

, (PCI/GM DRV I . ,

1 ST ATION NUMBER Ce i L EVY-4.7 M I .115 DEG.

1 i

! DATE COLLECTED 07/ 19

GAPMA SPECTRUP ANALYS IS

'f l SE-7 L.T. 4. E-01 i K-4 0 8.47 +-0.8 5 E 00 Ph-54 L.T. 4.- E-02 )

C C-58 L.T. 4. E-02 -

I FE-59 L.T. 9 E-02 C C-60 L.T. 3. E-02 2N-65 L.T. 7. E-02 2R-95 L .T . 5. E-02 RU-103 L.T. 5. E-02 i RU-106 L.T. 3. E-01 i I-131 L.T. 4. E-01 j C5-134 L.T. 4. E-02 i C5-137 3.25+-0.40E-01 j S A-14 0 L.T. 2. E-01 2

CE-141 L.T. 9 E-02 I

CE-144 L.T. 2. E-01 RA-226 1.88+-0.48E 00 TH-22 8 2.85+-0.29E 00 4

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CATE CCLLECTED 0 7/ 19 GAP?A SPECTRur ANALYSIS BE-7 L.T. 6. E-01 K-40 5.1 F +-0.58 E 00 PN-54 L.T. 6. E-02 JT.

CO-58 L.T. 6. E-02 .

FE-59 L.T. 1. E-01 C0-60 L.T. 5. E-02 Zh-65 L.T. I. E-01 2R-95 L.T . 8. E-02 RU-103 L .T . F. E-02 RU-106 L.T. 4. E-01 I-131 L.T. 6. E-01 C5-134 L.T. 6. E-02 C5-137 9.67+-0.97E-01 BA-140 L.T. 3. E-01 CE-141 L.T. 1. E-01 CE-144 L.T . 4. E-01 RA-226 1.62+-0.83E 00 TH-228 1.57 +-0.16 E 00

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IPCI/GM DRV I STATION NUMBER 21 RDUTE - 685-1 0 MI.3C1 DEG.

041E COLLECTED 07/19 RACI ECHE MIC AL AN ALYS I S 5R-89 L.T. 6. E-01 Sa-90 2.s *-0.1 E 00 1

GSPPA SPECTRup ANALYSIS SE-7 -L.T. 4. E-01 l K-40 9.42 +-0.94 E 00 84e-54 L.T. -3. E-02 Co-58 L.T. 3. E-02 FE-59 L.T. 8. E-02 CC-60 L .T . 3. E -0 2 ZN-65 L .T . 7. E-02 2R-95 L.T. 4. E-02 RU-103 L.T. 5. E-0 2 RU-106 L .T . 3. E-01 I-131 L.T. 4. E-01 C5-134 L.T. 3. E-02 C5-137 1.26*-0.13E 00 84-140 L.T . 1. .E-01 CE-141 .L.T. 1. E-01 CE-144 L.T . 3. E-01 RA-226 1.09*-0.56E 00 TM-228 7.05+-0.71E-01 7

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WIRGIN I A ELECTRIC C PahER CCMPANY 43RTH ANNA PodR S TA TI ON EEPOSURE P ATHWAY - AIRBONNE 50IL IPCI/GM DR V l ST AT IO80 NtMBER 22 ROUTE FCC-I.0 MI.242 UEG.

l 94TE CCLLECTE0 07/19 l

CCICCMEPICAL ANALYSIS Sa-49 L.T. 3. E-01 5R-90 1.6 +-0.5 E-01 3

G*Ples SPECTaup ANALYS15 SE-F L .T .. 5. E-01 K-40 1.91+-0.19E 01 8Me-54 L.T. 5. E-02 CO-5 8 .L.T. 5. E-02 FE-59 L .T . 1. E-01 CO-60 L.T. 5. E-02 298-6 5 L.T. 1. E-Ol 2R-95 L .T . 6. E-02 RU-103 L.T. T. F-02 au-106 L.T. 4. E-01 I-131 L.T. 5. E-01 C5-134 L.T. 5. E-02 C5-137 2.05+-0.52E-01 8A-140 L.T. 2. E-01 CE-141 L .T . 1. E-01 CE-144 L.T. 3. E-01 RA-226 3.63 +-0.8 2 E 00 TM-228 2.4T+-0.25E 00

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WIRGIM I A ELECTR IC . E P0bE R CCPPANY

' 13RTH ANNA power S T A TI ON EEP05UNE P ATHWAY - AIRB09NL 50 IL IPCI/G4 ORY'l STATIO4 NLM8ER 23 ASPEN FILL S-C.9 M t.158 DEG.

CSTE CCLLECTED O F/19 CACIECHENICAL AAALYSIS SR-49 L.T. 3. E-01 SR-90 9.4 +-4.6 E-02

~4 GAPP4 SPECTRUP AN ALYS IS SE-F L.T. 8. E-01 K-40 2.9 3 +-0.29 E 01 MM-54 L.T. 7. E-02 CC-58 L.T. 7. E-0 2 F E-59 L .T . 2. E-01 CD-60 L .T . 6. E-02 Z h-65 L.T. 1. E-01 l 2R-95 L.T. 9. E -02 t

Ru-103 L .T . 1. E-01 Ru-106 L.T. 6. E-01 I-131 L.T. 8. E-01 l C5-134 L.T. 8. E-02 C5-137 5. 31 +-0. 7 3 E-01 94-140 L.T. 3. E-01 CE-141 L.T. 1. E -01 CE-144 L.T . 3. E-01 R A-226 2. 36 *-0.72 E 00 TM-228 1.67 +-0.1F E 00 7

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CG E CCLLECTED S T/19 Cf*.DICCHEMICAL AseALYSIS Sa-49 L.T. 4 E-01 g SA-90 L.T. 1. E-01

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l GaMA SPECTour A4ALYSIS SE-T L.T. 4 E-01 E-40 4.23 +-0.58 E 00 te4-54 L.T. 4. E-0 2 CO-58 L.T . 4 E-02 FE-59 L.T. 1. F-02 CC-40 L.T. 3. E-02 2t>-65 L.T. a. E-02 2R-95 L.T. 5. E-02 RU-103 L.T. 5. E-0 2 l

20-106 L .T . 3. E-01

! I-131 L.T. 5. E-01 l C5-134 L.T. 5. E-02 CS-137 4.09*-0.45E-01 84-140 L.T. 2. E-01 l CE-141 L.T. 1. E-Ot

, CE-144 L.T. 3. E-01 l RA-226 1.90*-0.55E 00 TM-228 e9.3T*-0.91E-01 I

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( NM VIRGINIA ELECTRIC AND POWER C0prANY NORTH ANNA POE R STATION EXPOSURE PATHMAY-Af8IENT GApem RADIATION TLD (ellliress/ quarter)

SApFLE STATION FIRST QUARTER SECD4D QU4tTER THIRD QUARTER FOURTH QUARTER 2/ year i muCLIDE atseER 12/30/82-03/31/83 03/31/53-06/30/83 06/30/83-09/30/83 l

! TLD 01 17.7t0.4 21.9t0.7 18.8t0.6 Geum l RADIATION 02 11.8t0.6 15.8t0.6 13.3tl.2 .

i 03 11.720.3 16.110.4 14.3t0.4 1

04 13.9t0.3 16.4t0.2 16.0t0.2 i 05 15.8t0.7 20.4t0.3 17.7t0.2 05A 15.4t0.2 19.It0.4 16.3t0.2 06 18.410.1 23.8t0.3 23.3tl.3 H 07 14.320.2 18.St0.5 16.5t0.2 21 14.3t0.2 18.8to.6 16.St0.2 l 22 20.4110.2 H 24.120.3 H 21.110.3 23 20.0t0.4 23.4t0.4 22.3tl.1 CD4 TROL 24 10.3t0.2 L 14.511.0 L ll.2t0.1 L TLD ALL 15.323.3 d/91 days 19.4t3.3 d/92 days (a) 17.3t3.6 d /

GApen sEAfi 2 0.1720.04 mR/ day 0.21t0.04 d / day 0.1910.04 mR/ day RADIATION 1 SIGfm H = HIGHEST L = LOWEST (a) These results were obtained with no control dosimeters for subtracting transit dose and system background.

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O O O W IRGIN I A ELECTit IC C PomEt CCM*ANY 40miH AMNA POWER 5YATIOM EE P050et E P ATHwAY - WA TEPP.0dE WATER - SURFACE I PC I/L I TER I ST AT 104 4tMBEa CS LARE Av84 UPS-2.2 MI. 22c DEG. ICCNTRCLI l

DaTE CCLLECTED O T/14 CE/15 09/11 mAetCCHEPtCAL A4Atys15 t-131 L.T . 4 E-01 L.T. 3. E-Ot L.T. 4 E-01 GaroA SPECTaum AhALYSIS 1 BE-7 L.T. 6. E 01 L. T. 7. E 01 L. T. - 3. E 31 E-40 L .T . 9 E 01 L.T. 2. E 02 L.T. 5. E 01 l . Wee-54 L.T. 6. E 00 L.T. 6. E 00 L.T. 3. E 00 l CC-58 L.T. 6. E 00 L.T. 7. F OC L. T. 3. E 00 l FE-59 L .T . 1. E 01 L.T. 1. E 01 L. T. 6 E 00 l CD-60 L.T. 6. E 03 L.T. 7. F 03 L. T. 3. E 00

( 2h-65 L.T. 1. E 01 L.T. 1. E 01 L. T. 7. E 00 l

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L. T. S. E 00 L.T. 4. E 00 l 20-106 L.T. 5. E 01 L.T. 7. E 01 L. T. 3. E 01 i I-131 L.T. 3. E 01 L.T. 2. E 01 L. T. 9 E 00 l C5-134 L.T . 6. E 00 L. f. 7. F 00 L. T. 4. E 00 l 05-137 L.T. 6. E 00 L. T. P. E On L. T. 4 E 00 l BA-140 L.T. 1. E 01 L . T. 2. E 01 L. T. 5. -E 00 l CE-141 L .T . 1. E 01 L.T. 2. E 01 L.T. 9. E 00 CE-144 L.T. -5. E 01 L.I. 5. E of L. T. 3. E 01 l RA-226 L.T. 1. F 02 L.T. 2. E 02 L. T. 8. E 01

( TH-228 L .T . 1. E 01 L. T. 1. E 01 L. T. 8. E 00 1

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wtTFa - SU4 FACE 1 PC 1/L I TER 1 STAT 134 Mum 8F#

Da3E CCLLECTED 07/01-07/31 C 7/ C 1-O F/ 31 CE/C1-02/31 09/31-08/31 RaetCCMEMICAL AAALYS15

( GR-S 2.5 +-0.8 E 07 f.4 +-C.9 E CC 4. C + - C.1 E 0 3 3. 0 + -0. 7 E 00 l

GAPPA SPECTaur AssLv515 3l BE-/ L.T. 8. E 01 L .T . 1. E C2 L.T. 6.' E 01 L.T. 4 E 01 E-40 L.T. 2. E 02 L.T. 2. E C2 L. T. 1.- E 02 L. T. 5. E 01 P4-54 L.T. 6. E 03 L.f. 7. E Co L.T. 5. E OC L. T. 3. E 03 CO-58 L.T . 8. E 00 L.f. 9. E CC L.I. 7. E CC L.T. 4. E 00 EE-59 L.T. 2. E 01 L.T. 3. E C1 L.T. 2. E 01 L. T. 1. E il CO-60 L.T. 6. E 00 L.T. 7. E C0 L.T. 5. E OC L.T. 3. E 00 Z4-65 L.T. 1. E 01 L.T. 1. E C1 L. T. 1. E 01 L. f. 7. E 00 2R-95 L.T. 1. E 01 L.T. 1. E C1 L.T. P. E 00 L. T. 4 E 00

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! au-106 L.T. 5. E 01 L.T.' 6. E 01 L.T. 4. E 01 L.T. 3. E 01 1-131 L.T. 5. E 02 L.T. 5. E C2 L.T. 2. E C2 L. T. 1. E 02 CS-134 L.T. 6. E 00 L .T. 7. E CO L. I. 5. 'E 00 L. T. 3. E 00 CS-13F L.T. 6. F 00 L.T. T. E Co L.T. 5. E Oc L. T. 4 E 00 84-140 L.T . 1. E 02 L.T. 2. E C2 L.T. 6. E 01 L.T. 4. E 01 CE-141 L.T. 3. E 01 L.T. 3. E C1 L.I. 2. E 01 L.T. 2. E 01 CE-144 L.T. 5. E 01 L.T. 6. E 01 L.T. 4. E 01 L.T. 3. E 01 RA-226 L.T . 1. E O2 L.T. 1. E C2 L.T. 1. E 02 L.T. R. E 01 TM-228 L.T. 1. E 01 L.T. 1. E C1 L.T. 1. E 01 L.T. 7. E 00 TalituP Ah4LYS15 H-3 1.78+-0.11E 01 2. C4 +- 0.21E C3 W-26 W-33 W-26 W-33 208 Bridge NAP 5 Discharge 7

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! SEDIMENT /$ILT fPCI/GM DRY I

( STATIO4 NUMBER 11 43R T H AMM A R . DO W4 5-5. 8 F I .128 DE G.

DATE CCLLECTED 09/13-09113 l

Gappe SPECIAUP AhALYS IS BE-T L.T. 4. E -01 R-40 1.66 +-0. t T E 01 pt-54 L.T. 4. E-02 T C D-SS L.T. 5. E-02 .

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C5-134 L.T . 5. E-02 C5-137 L.T. 4. F-02 -

BA-140 L.T. 2. E-01 ' ' '

CE-141 L.T. 9. E-02 '

CE-144 L.T. 2. E-01 RA-226 2.74*-0.59E 00 TM-22 8 1.60 +-0.16 E 00 RADI0 CHEMICAL ANALYSIS ANNUAL COMPOSITE (03/15-09/13)

SR-89 L.T. 5. E-01 SR-90 L.T. 7. E-02 7

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VIRGINIA EL ECTR IC C P0 bot CCPPAN Y NORTH AM'4A POWER STATION SHORELINE SOIL - EXPOSURE PATHWAY - AGUATIC (PCI/GM 04Y I STATION NUMSER ES L AK E ANN A, UPS-2.2 Mt. ?20 DEO. ICONTROLI COTE CCLLECTED 09/13-09/13 CAPCA SPECTRUP ANALYS IS BE-T L.T. 2. E-01 K-40 5.12 +-0.29 E 00 PW-54 L.T. 2. E-02 CD-Se L.T. 2.. E-02 i FE-59 L.T. 5. E-02 C0-60 L.T. 2. E-02 Z N-65 L.T. 6. E-02 2R-95 L.T. 3. E-02 Ru-103 L .T . 3. E-02 l RU-106 L.T. 2. E-01 1-131 L.T. 2. E-01 C5-134 7.18*-1.14E-02 CS-137 1.93+-0.22E-01 BA-140 L.T. 8. E-02 CE-141 L.T. 6. E-02 CE-144 L .T . I. E-01 l RA-226 1.47*-0.36E 00 TM-228 1.14+-0 14E 00 RADI0 CHEMICAL ANALYSIS ANNUAL CONPOSITE (03/15-09/13)

SR-89 L.T. 4 E-01 SR-90 L.T. 8. E-02 2

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)

3 CSTE CCLLECTED 07/11 06/11 09/08 i

l RADICCHEMICAL AhALYSIS l

1-131 L.T . 2. E-01 L. I. 2. F-01 L. T. 4 E-01 '

j GAPMA SPECTRUM ANALYS15 i

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BE-T L.T. 5. E 01 L. T. 4. E 01 L. T. 3. E 01 K-4 0 1 30+-0.13E 03 1.2 T+-C.13E 03 1. 3 7 + -0.14 E 0 3 Mh-54 L.T. 6. E 00 L. T. 3. E 00 L. T. 4. E 00 C O-5 8 L.T. 6. E 00 L.T. 4. E 00 L.T. 4. E 00

< FE-59 L .T . 1. E Oi L.T. 2. E 00 L.T. 9. E 00 l C0-60 L.T. 7. E 00 L. I. 4. E 00 L. T. 4. E 00

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RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE-(07/11 09/08) 1

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( PC I /L I TER 1 STAT ION NUMBER . 13 FR ECER ICK S NALL-5.6 MI.205 DEG.

DATE CCLLECTED 07/11 CE /Il 09/08 2*DICCHEPICAL ANALYSIS I-131 L.T. 2. E-01 L.T. 2. E-01 L. T. 4. E-01 i G APPA SPECTRUP AN A LYS IS f

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NORTH ANNA POWER STA TION EXPOSURE P ATHWAY - INGE S TI CP.

.M ILK IPCI/ LITER ,1 ST AT ION NUMBER 14A COLVIN DAIRY.8.0 MI.310 DEG. NW CSTE CCLLECTED 07/11 C6/II 09/08 RASICCHEPICAL AAALYSIS 1-131 L.T . 2. E-01 L . T. 4. E-01 L. T. 3. E -01 S;

G* PP A SPECTRUP ANALYSIS BE-7 L.T. 4. E 01 L. T. 5. E 01 L.T. 6. E 01 K-4 0 1.33+-0.13F 03 1 2E+-C.t3F Os 1.35+-0.14E 03 PN-54 L.T. 4 E 00 L. T. 5. E 00 L. T. 6. E 00 CC-58 L.T. 4. E 00 L.T. 4. E C0 L. T. 7. E 00 FE-59 L.T . 9 E 00 L.T. 1. E 01 L. T. 1. E 01 CD-60 L.T. 5. F 00 L.T. 5. E 00 L. T. 7. E 00 ZN-65 L.T. 1. E 01 L.T. 1. E 01 L. T. I. E 01 2R-95 L.T. 5. . E 00 L.T. S. E 00 L.T. 7 E 00 RU-103 L.T. 5. F 00 L . T. 6. E 00 L.T. 7. E 00 au-106 L.T. 4. E 01 L . T. 4. F 01 L. T. 6. E 01 1-131 L.T . - 7. E 00 L.I. 1. E 04 L.T. 1. E 01 CS-134 L.T. 5. E 00 L . T. 5. E 00 L. T. 7. E 00 CS-137 L.T. 5. E 00 L.T. 6. E 00 L. T. 8. E 00 B A-140 L.T. 6. E 00 L.T. 9. E 00 L.T. 1. E 01 CE-141 L.T. 7. E 00 L . T. 8. F 00 L.T. 1. E 01 CE-144 L.T. 3. E 01 L.T. 3. E 01 L. T. 6. E 01 R A-226 L.T. 8. E 01 L.T. 9. E 01 L.T. 1. E 02 TH-228 L.T. 8. E 00 L.T. e. E 00 L.T. 1. E 01 RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (07/11-09/08) i SR-89 L .T . 4. E 00 SR-90 1.2 +-0.5 E 00 7

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V IRG IN I A EL EC TR IC & POWER CCPPANY NORTH ANNA POWER S T A TION EXPOSURE PATHWAY - INGE S TION -

VECETAT131 - TERRE S TRI AL (PCI/GM hE T . I

' ST AT ION N UMBER 21 ROUTE 685-1.0 M t.3C1 DEG.

DATE COLLECTED 08/12 GAPPA SPECTRUP AN ALYS IS GREEN LEAFY VEGETABLE BE-7 5.31+-1.74E-01 K-40 4.72+-0.47E 00' PN-54~ L.T. 2. E-02 i CO-58 L .T . 2. E-02 FE-59 L.T. 5. F-02 C0-60 L.T. 2. E-02 ZN-65 L.T . 4.- E-02 ZR-95 L.T. 2. E-02 RU-10 3 L.T. 2. E-02 RU-106 L .T . 2. E-01 I-131 L.T. 8. E-02 CS-134 L.T. 2. E-02 CS-13T L.T. 2. E-02 BA-140 L.T. 4. E-02 CE-141 L.T. 4. E-02 CE-144 L.T. I. E-01 RA-226 L.T. 3. E-01 TH-228 L.T. 3. E-02 i

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VIRGIN I A ELECTRIC C PubER COPPANY .

NORTH ANNA POWER STATION EXPOSURE P ATHWAY - INGE S TIch VEGETATION - TERRESTRI AL IPCI/GM hET )

ST AT ION NUMBER 23 l ASP EN b!LL S-0.9 M I .158 DE G.

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DATE CCLLECTED 08/12 i

GAPMA SPECTRUP ANALYS IS GREEN LEAFY VEGETABLE l

8E-7 4.44+-1.22E-01 K-40 6.22+-0.26E 00 l MN-54 L.T. 1. E-02 )

CO-5 8 L.T. 2. E-02 .

FE-59 ' L .T . 4. E-02 CD-60 L.T. 1. E-02 ZN-65 L.T. 3. E -0 2 ZR-95 L .T . 2. E-02 l

RU-103 L.T. 2. E-02 l RU-106 L.T. 1. E-01 I-131 L.T . 1. E-01 CS-134 L.T. 1. E-02 CS-137 L.T. 1. E-02 BA-140 L.T. 3. 'E-07 CE-141 L.T. 3. E-02 CE-144 L.T. 1. E-01 R A-22 6 L.T. 3.- E-01 I TH-228 L.T. 3.. E-02 7

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.i VIRGIN I A ELEC TR IC C PObER COPPANY VIRGINIA STATE DEPARTMENT OF HEALTH NORTH ANNA POWER STA TION SPLIT /VEPCO EXPOSURE P ATHWAY - INGE S TI ON F000/ GARDEN CROPS (PCI/GM WET I STAT ION NUMBER V-92 DATE CCLLECTED -07/29 GAPMA SPECTRUP ANALYS IS CABBAGE ,

r BE-7 L.T. 2. E-01 M-40 6.09+-0.61E 00 i PN-54 L.T. 2. E-02 CO-58 L.T. 2. E-0 2 - .)

FE-59 L.T., 5. E-02 .

CD-60 L.T. 2. E-02 ZN-6 5 L.T. 3. E-02 ZR-95 L.T. 2. E-02 RU-103 L.T. 2. E-02 RU-106 L.T. 1. E-01 1-131 L.T. 3. E-01 CS-134 L.T . 1. E-02 CS-137 L.T. 1. E-02 84-140 L.T. 6. E-02 CE-141 L.T. 4. E-02 CE-144 L.T. 1. -E-01 RA-226 L.T. 3. E-01 TH-2 2 8 L.T. 3. E-02 7

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MTEEDYNE .

ISOTOPES )

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! FOURTH QUARTER 1983 OCTOBER 1, 1983 -- DECEMBER 31, 1983 l

. DISCUSSION OF RESULTS 4-AND REMP. TABLES l

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g%) g BLE OF COMTEMTS FOURTH QUARTER 1983 PAGE SUNRY AND DISCUSSION OF RESULTS LIST OF TABLES iii LIST OF FIGURES iii EXCEPTIONS AND SPECIAL EVENTS 10 AIRBORNE EXPOSURE PATHWAY 2D DIRECT EXPOSURE PATHWAY 90 WATERBORNE EXPOSURE PATHWAY 120 AQUATIC EXPOSURE PATHWAY 18D INGESTION EXPOSURE PATHWAY 19D CONCLUSIONS 230 APPENDIX A FIRST QUARTER A-1 Complete Data by Sample Type, Station and Collection Dates APPENDIX B SECOND QUARTER B-1 Complete Data by Sample Type, Station and Collection Dates APPENDIX C THIRD QUARTER Complete Data by Sample Type, Station and Collection Dates C-1 APPENDIX D FOURTH QUARTER Complete Data by Sample Type, Station and Collection Dates D-1 O

11

TTELEDfNE ISOTOPES f LIST OF FIGURES PAGE FIGURE 3 Air Exposure - Gross Beta and Ce-144 (1977- ) 4D FIGURE 4 Direct Exposure - Environmental TLD (1977- ) 100 FIGURE 5 Water Exposure - Tritium (1977 ) 13D FIGURE 6 Ingestion Exposure - Sr-90 (1977 ) 200 l l

l LIST OF TABLES TABLE 4 Remp Summary - Airborne Exposure I 5D TABLE 5 Remp Summary - Direct Exposure llD TABLE 6 Remp Sumary - Waterborne Exposure 14D TABLE 7 Remp Sumary - Ingestion Exposure 21C O

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T TELEDVNE ISOTOPES EXCEPTIONS AND SPECIAL EVENTS

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THIRD (UARTER 1983 (SEPTEMBER 28,19E 3 -- DECEMBER 31,1983)

EXCEPTIONS All required samples were dollected and analyzed in accordance with the VEPC0 rafiological environmental monitoring program (REMP) for the fourth quarter 1983 except as follows:

COLLECTION PATHWAY SAMPLE STATION PERIOD REASON Ingestion Milk 14A 10/12/-12/13 Farm closed.

No samples available.

SPECIAL EVENTS During the year of 1983 no unusual events occurred that could be inter-preted as effecting environnent in the vicinity of the North Anna Power Station. There appear to be no further detectable effects of nuclear f allout

'N from the nuclear atmospheric tests by the People's Republic of China in October of 1980.

1D

TTELEDYNE ISOTOPES

^ta8oa"e Ex,0SURe eA1swAv O' (SEPTEMBER 27, 1983 -- DECEMBER 27,1983)

AIR PARTICULATE FILTERS (STATIONS 1, 2, 3, 4, 5, SA, 6, 7, 21, 22, 23, 24)

Air particulate filters were collected weekly in the fourth quarter of 1983 and measured for gross beta activity. The average gross beta activity for the month of October was 0.029 pCi/Cu.M.; in November it was 0.022 pCi/Cu.

M. and in December it was 0.027 pCi/Cu. M. The gross beta activity is shown on the graph in Figure 3 on the following page. The activity has returned to normal environmental levels from the average high of 0.30 pCi/Cu.

M. in April of 1981 following the Chinese atmospheric nuclear tests of October 1980. Concurrent with the low gross beta activity the Ce-144 activity is below the lower limit of detection. The average gross beta activity of all stations is not significantly different from the control station number 24, 22 miles, 325 degrees NW of the reactors.

The air particulate filters were composited for the fourth quarter for each station and analyzed on the gamma spectrometer. The naturally occurring cosmogenic nuclide Be-7 was detected in 12 of 12 samples at normal environ-mental levels. The terrestrial isotope K-40 was detected at 6 of 12 stations at slightly below the minimum level of detection. There were two detections of Cs-137 at an average level of 0.005 pCi/Cu.M. The detections were at stations SA, 3.2 miles,11 degrees and 22,1.0 miles 242 degrees. Similar

(~') low-level detections of fission radioisotopes occurred in other areas of the United States and are believed to be residual f allout from previous atmos-pheric nuclear testing. It can be concluded that there is no indication of an effect on the air pathway from the operations of the North Anna Power Station.

AIR RADI0 IODINE (STATIONS 1,2,3,4,5,SA,6,7,21,22,23,24)

No I-131 was detected in the weekly charcoal cartridges collected in the vicinity of NAPS indicating that no detectable airborne releases of I-131 occurred.

PRECIPITATION (STATION 01)

Rain water was collected monthly at station 01, on site, 0.2 miles, l

42 degrees NE and analyzed for gross beta activity. Average beta activity for l the fourth quarter of 1983 was 3.1 pCi/ liter. The resulting deposition was 0.420 nanoCi/Sq. M. This is the nominal environmental level for rain water and shows no indication of.an effect due to the operations of NAPS.

A semiannual composite was prepared and analyzed for gamma emitters and tritium. The gamma spectrometer showed that no gamma emitters above the minimum level of detection were present. Tritium was present at a level of 220. pCi/ liter which is a nominal environmental level.

lO 2D

- T TELEDYNE ISOTOPES Q AIRBORNE EXPOSURE PATHWAY (SEPTEMBER 27, 1983 -- DECEMBER 27,1983)

S0IL (STATIONS 1,2,3,4,5,5A,6,7,21,22,23,24)

No soil samples were scheduled to be collected in the fourth quarter of 1983. Soil samples were collected on July 19, 1983 and the results are discussed on pages 2C and 3C.

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O O O TABLE 4 RADIOLOSICAL ENVI RONMENT AL MCNITOR11G PROGR AN

SUMMARY

P ATHW Af- AIRBOR1E COMPILATION - QU ART ERLY

SUMMARY

VIRGINI A ELECTRIC E POWER COPPAhY S AMPLE - AIR P ARTICULATE FILTERS CONTROL - ORANGE-22 0 MI.325 OEG.NW WORTH ANNA POWER STA TI ON UNITS - PCI/CU. N AN ALYS IS N3 LIMIT OF ALL INDICATOR SAMPLE S LOC ATION WITH HIGHEST ME AN CONTROL LOC ATION NON- REPORTI hG PERIOD DETECTIO1 MEAN X E-00 MEAN X E-00 MEAN X E-CC ROUTINE NEAN X E-00 RAN3E STATION FRACTION R AN GE RANGE FR AC TION ST ATION DESCRIPT 10N FRACTIDH CR-B 156 0.00760 0.0263 0.0357 .

0.0249 0 C9/2 7/83-12/27/93 '

0.0189 - 0.0357 05A 013/013 0.0210 - 0.0720 0.00980- C.C420 156/156 STURGE 0N'S CREEK-3.2 MI . 11 DEG. 013/013 E

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O O O TABLE 4 RADIOLO3I CAL ENVIRONMENT AL MONITORING PROGRA4

SUMMARY

PATHsRY- AIRBORNE COMPILATIOk - CUARTERLY

SUMMARY

YIRGIN TA ELECTRIC & P0bER COMPANY SAMPLE - CHARCOAL FILTERS CONTROL - ORANGE-22.0 MI .325 DEG.NW NORTH ANNA POWER STATI ON UNITS - PCI/CU. M ANAL YSIS NO LIMIT OF ALL INDICA T34 SAMPLES LOC ATI CN WITH HIGHEST MEAM CONTROL LJC ATION NON- REPORTING PERIOD DETECTION ME AN X E-00 MEAN ( E-0 0 ME AN X E-00 RO UTI NE ME AN X E-00 RANGE STATION FRACTICN AMGE RANGE FR ACTION ST ATION DESCRIPT ION F4 ACTION I-13 1 156 0.0240 LT 0.0200 LT 0.0200 0 09/27/83-12/27/S3 LT 0.00500 -LT 0.0200

LT 0. 00 50 C- L T 0.0200 000/156 000/013

O O O TABLE 4 RADIOLOGICAL ENVIRCNMENTAL MONITORING PROGRAM

SUMMARY

PATHWAF- AIRBOR4E COMPILATION - CUARTERLY SJMMARf VIRGINI A ELECTRIC f. POWER COMPANY S AMPLE - COMPOSITE AIR PARTICULATE FILTERS CONTROL - ORANGE-22 0 MI.325 DEG.NW NORTH AN4A POWER STA TI ON UZITS - PCI/CU. M ANALf S IS NO LI9IT OF ALL IND IC A T04 SA MPLE S LOCATICN WITH HIGHEST MEAN C34 TROL LOCATION N3 N- REPORTING PERI OD DETECTION ME AN X E-00 MEA 4 E E-00 MEAN X E-00 ROUTINE 4EAN X E-00 RANGE STATION FRACTI ON RANGE RANGE FL AC TION ST ATION DES CRIPT ION FRACTIO 1 BE-T 12 0.01200 0.05005 0.07210 0.045CC 0 C9/27/83-12/27/S3 0.03830- 0.07210 02 001/031 0.0T210- 0.07210 0. 045 C C- 0.0450C 012/012 FREDERICKS HALL-5 3 MI. 225 DEG. 001/001 K-40 12 0.03100 0.02865 0.04600 LT 0.070CC 0 C9/27/83-12/27/83 0.01030- 0.04600 04 001/031 0.04600- 0.04600 LT 0.0 70 0 0-L T 0.07000 006/012 WARES CROSSROA05-5.1 MI.287 DEG. 000/001 1-131 12 0.00120 LT 0.02000 LT 0.020CC 0 C9/27/83-12/27/83 LT 0. 002 00-L T 0.02000 'LT 0. 0200 0- L T 0.02000 000/012 000/001 CS-13T 12 0.00120 0.00495 0.00808 LT 0.00200 0 C9/27/83-12/27/83 0.00182- 0.00806 05A 001/001 0.00808- 0.00808 LT 0. 002 0 C-L T 0.00200 002/012 STURGECN'S CREEK-3.2 MI.11 DEG. 000/001 5

O O O TABLE 4 R ADI OLOGIC AL ENVI RCNM2NT AL MONIT ORIM G PROGR AM SU14 ARY PATHWAf- AIR 83R4E COMPILATION - QUART ERLY SJMMARY VIRGINI A ELECTRIC & POWER ".0PPAhY j S AMPLE - W ATER - PRECIPITATION CONTROL - NORTH ANMA P0hER STA TION

JNITS - PCI/ LITER i

t AN ALf S IS NO LIMIT OF 4LL IMOICATOR SA MPLE S LOCATION WITH HIGHEST MEAN C3NT40L LOCA TION NO N- REPORTIhG PERIDO DETECTIDN MEAN x E-03 MEAN X E-00 MEAN X E-00 ROUTINE MEAN X E-00 RANGE STATION FRACTI ON RAMGE RANGE FRAC TION STATION DESCRIPTION FR AC T ION

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GR-8 3 3.100 0 10/01/83-12/31/83 1.600 - 4.000 1 003/003 l' 0.420 GR-B 3 0.220 - 0.550 DEPOSITION 003/003 0 10/01/83-12/31/83 nCi/Sq.M.

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) I-131 1 LT 40.0000 40.0000 I 0 07/01/83-12/31/83 i

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T TELEDVNE ISOTOPES DIRECT EXPOSURE PATHWAY s (SEPTEMBER 30, 1983 -- DECEMBER 30, 1983 ENVIRONMENTAL GAMMA DOSE - THERM 0 LUMINESCENT 00SIMETERS (STATION 5 1, 2, 3, 4, 5, 5A, 6, 7, 21, 22, 23, 24)

The average gamma environmental dose as measured on thermoluminescent dosimeters at twelve stations in the vicinity of the North Anna Power Station during the fourth quarter of 1983 was 0.17 mR/ day. The range of the environ-mental dose was 0.13 to 0.22 mR/ day. The highest dose was 0.22 mR/ day at station 23, Aspen Hills, 0.9 miles 158 degrees SSE. The lowest dose was 0.13 mR/ day at station 24, which is the control station, Orange at 22 miles, 325 degrees, NW.

Figure 4 shows the plot of the average dose levels monitored, which indicates no significant change in the level of the direct exposure pathway since 1977 due to the operation of the North Anna Power Station. The dosage monitored is less than the estimated whole body dose per quarter due to natural terrestrial and cosmic radiation and internal dosage from natural radionuclides. Table 5 summarizes the average activity of all indicator stations, the location with the highest mean and the activity of the control station 24.

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TABLE 5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

PATtWAY - DIRECT EXPOSURE COMPILATION . QUARTERLY

SUMMARY

VIRGINIA ELECTRIC and POWER COMPANY SAMPLE . TLD ENVIRONMENTAL BADGES CONTROL - ORANGE-22.0 MI.325 OEG. NW NORTH ANNA POWER STATION UNITS - ar/ day STATION 24 ANALYSIS NO LIMIT OF ALL INDICATOR SAMPLES LOCATION WITH HIGHEST MEAN CONTROL LOCATION NON- REPORTING PERIOD DETECTION MEAN X E-00 MEAN X E.00 MEAN X E-00 ROUTINE MEAN X E-00 RANGE STATION FRACTION RANGE RANGE FRACTION STATION DESCRIPTION FRACTION GAMMA 12 0.05 0.17 0.22 0.12 0 09/30/83 12/30/83 00SE 0.13 -

0.22 23 001/001 0.22 0.22 0.12 0.12 012/012 Aspen Hills - 0.9 MI. 168 DEG SES 004/004 TOTAL mR/ year 88.0 48.7 0 12/30/82-12/30/83 69.2 23 004/004 88.0 - 88.0 48.7 -

48.7 48 0.05 48.7 - 88.0 Aspen Hills . 0.9 MI. 168 DEG SES- 004/004 048/048 O

T TELEUVNE ISOTOPES

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WATERBORNE EXPOSURE PATHWAY (OCTOBER 01, 1983 -- DECEMBER 71,1983)

SURFACEWATER(STATIONS 08,09)

Surf ace water was collected monthly at two stations and analyzed for radioiodine by the ion exchange method and gamma emitting nuclides. These nuclides and iodine-131 remained below the limits of detection. The samples were composited quarterly and analyzed for tritium. The level of tritium activity at Station 08, the discharge lagoon, was 3960 pCi/ liter as compared with 2600 pCi/ liter during the third quarter.

Figure 5 illustrates the trend of tritium activity at Station 08 from 1977 through the end of 1983.

The tritium activity at Station 09 at Lake Anna, 2.2 miles upstream, 320 degrees NW, was 2900 pCi/ liter as compared with 2100 pC1/ liter in the third quarter. This level of tritium activity is significant since it is upstream of the plant.

SURFACE WATER (STATIONS W-26, W-33)

STATE OF VIRGINIA / SPLIT VEPC0 A sample of surface water was collected monthly from Station W-26, the 208 bridge, and Station W-33, the discharge canal. A total of 6 samples were bq collected and analyzed for gross beta, for gamma emitting nuclides and for tritium. The gross beta activity was monitored at an average of 3.9 pCi/ liter which is a low environmental level. There were no gamma emitting nuclides detected except for one detection at Station W-33 of K-40 at a low environ-mental level. This is a naturally occurring nuclide and is not related to fission products. The average level of tritium activity at station W-26, the 208 bridge was 2597 pCi/ liter. The average level of tritium activity at Station W-33, the discharge lagoon was 3317 pCi/ liter. This is similar to the tritium results for the samples from the North Anna Power Station.

RIVER WATER (STATION 11)

A quarterly sample of river water was analyzed for gamma emitting nuclides and tritium. Tritium activity at Station 11, North Anna River, 5.8 miles down stream, was 3420 pCi/ liter. This compares with 2850 pCi/ liter in the third quarter and is below the maximum allowable concentration for tritium. No iodine-131 nor gamma emitters were detected suggesting that the effluent releases consisted primarily of tritium.

GROUND WATER (STATION OlA)

Ground water from the environmental well, collected and analyzed quarter-ly, contained no gamma emitters and the tritium activity was below the minimum level of detection. This indicates no adverse effects via the waterborne pathway due to the operations of NAPS.

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O 4 O O 7 TABLE 6 RA010 LOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

PATHWAY . WATER 8ORNE COMPILATION . QUARTERLY

SUMMARY

VIRGINIA ELECTRIC and POWER COMPANY SAMPLE - SURFACE WATER CONTROL . LAKE ANNA, UPS-2.2 MI.320 OEG.NM NORTH ANNA POWER STATION UNITS . pC1/11ter i

ANALYSIS NO LIMIT OF ALL INDICATOR SAMPLES LOCATION WITH HIGHEST MEAN CONTROL LOCATION NON. REPORTING PERIOD OETECTION MEAN X E-00 MEAN X E.00 MEAN X E-00 ROUTINE MEAN X E-00 RANGE STATION FRACTION RANGE RANGE FRACTION- STATION DESCRIPTION FRACTION 4

I-131 6 LT 0.500 LT 0.500 0 10/14/83-12/15/83

< LT 0.300 . LT 0.500 BY CHEMICAL SEPARATION LT 0.300 .LT 0.500

) 000/006 000/003 1

i 1-131 6 LT 30.00 LT 30.00 0 10/14/83-12/15/83 LT 7.00 -LT 30.00 BY GAMMA SPECTROSCnPY LT 10.00 -LT 30.00 d

000/008 000/003 CS-137 6 LT 7.00 LT 4.00 0 10/14/83-12/15/83 LT 4.00 -LT 7.00 LT 4.00 -LT 4.00.

000/008 000/003 H-3 2 (a) 3430. 3960. 0 10/14/83-12/15/83 1

2900. - 3960. 08 001/001 3960. -3960.

! 002/002 DISCHARGE LAGOONS 1.1 MI. 148 OEG.

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(a) Tritium analysis is done on the quarterly composite of monthly samples from each station (Station 08 and station 09).

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O O O-TABLE 6 RADIOLOGICA L ENVI RONMENT AL MONIT OR14G PROGR AM SU4 MARY STATE OF VIRGINTA DEPARTMENT OF HEALTH / SPLIT VEPCO P

T HW 4f- WATE R BORN E COMPILATION - QU ART ERLY

SUMMARY

S AMPLE -SURFACE WATER CONTROL -

JOITS - PCI/ LITER AN ALYS IS 40 LIMIT OF LLL INDICATOR SAMP LE S LOC ATION WITH HIGHEST MEAN CONTR OL L3CA TI3N NON- REPORTIh; PE RI OD DETECTIO1 MEAN x E-00 MEAN X E-00 MEAN X E-CC ROLTINE 1EA1 X E-00 RAN3E STATION FRACTION RANGE RANGE FR AC TION ST ATION DESCRIPTI3N FR AC TION 3.9 GR-8 6 3.0 4.7 4.7 0 10/01/83-12/31/83 s' 006/006- V-33 003/ 003 4.6 -

4.8 DISCHARGE CANAL K-40 6 70.2 0 70.20 0 10/01/83-12/31/83 70.20 -

70.20 W-33 001/00 70.20 -

70.20 001/006 DISCHARGE CANAL I-131 6 LT 100.0 0 10/01/83-12/31/83 LT 100.0 -LT 100. 0 000/006 CS-137 6 LT 5 00 0 10/01/83-12/31/83 LT 5.00 -LT 5 00 000/006 H-3 6 2957. 3317 0 10/01/83-12/31/83 2587. - 3317. W-33 003/003 2830. -3980.

006/006 DISCHARGE CANAL 2597.

W-26 00 003 2030. -3200.

-J

O O O TABLE 6

RADIOLOGI CAL EWI PONPENT AL MONITORING PROGRAM SLMM AR Y I i

L 4

PATHdtf- W ATERBORNE COMPILATION - QU ARTERLY

SUMMARY

VIRGIN I A ELECTRIC E POWER COMPANf

] S ANPLE - WAT ER - river CONTRO L - LAKE ANN A,UPS-2.2 41.320 DEG.NW 43RTH ANNA POWER STATION j UN ITS - PCI /L ITER i

ANALYSIS 98 0 LIMIT OF ALL IN01C& TOR SAMPLES LOC ATION WITH HIGHEST MEAN CONTROL LDCATION NON- REPORTI hG PERIOD DETECTI34 MEAN x E-00 MEAN E E-00 M E A4 X E- C0 ROUTINE

! MEAN X E-00 R AN3 E STATION FRACTION RAN GE RANGE FR AC TION ST ATION DESCRIPT ION FRACTION ;

I I ,

j ,i j n

! I-131 1 L T 100. 0 0 12/15/83 1

LT 10.00 -LT 100.0 l 000/001 ,

CS-13T 1 LT 4.00 0 12/15/93 -

LT 4.00 -LT 4.00

! 000/001 f

l l H-3 1 3420. 3420. 0 12/15/83 ;

3420.

3420. -

11 001/001 3420. -3420. j 001/001 NORTH AhhA R,DQdNS-5.8 MI.128 DEG. >

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s i

i i I

+ ,

1 1

O OJ O v TABLE 6 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGR AM

SUMMARY

CATHWAt- WATERBORNE COMPILATION - QUARTERLY

SUMMARY

WI4GINIA ELEC TRIC E POWER COMPAhY S AMPLE - WATER - GROU4D CONTROL - PREVIOJS 3 QUARTER 5 N3RTH ANIA POWER STA TION CCITS - PCI/ LITER ANALYSIS 40 LIMIT OF LLL IN3ICATO4 SAMPLES LCCATION WITH HIGHEST MEAN C3NTIOL LOCA TION NON- REPORTING PERI O0 DETECTION MEAN A E-00 MEAN X E-00 MEAN X E-00 R OUTI NE NEAN X E-00 RA155 STATION FRACTION R ANG E RANGE F% AC TION STATION DESCRIPT I34 FR AC T IJ N I-131 1 10.00 LT 10.00 0 12/27/83-12/27/83 LT 10.00 -LT 10.00 000/CC2 CS-13T 1 9.00 LT 5.00 0 12/27/83-12/27/83 LT 5.00 -LT 5.00 000/0C2 H-3 1 100. LT 110. LT 110. 0 12/27/83-12/27/83 LT 110. -LT 110. 01A 000/001. L.T 110. . LT 110.

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TMIE N

AQUATIC EXPOSURE PATHWAY (October, 1983 -- September, 1983)

SEDIMENT / SILT (STATION 08,09,11)

Sediment and silt samples, which are collected semiannually, were col-lected and analyzed in March and September 1983. Results are discussed on pages 18A and 20C.

SHORELINE S0IL (STATION 09)

Shoreline soil, which is collected semiannually, was collected and analyz-ed in March and September 1983. Results are discussed on pages 18A and 20C.

O O . .

180

T TELEDVNE ISOTOPES t; INGESTION PATHWAY V (OCTOBER 12, 1983 -- DECEMBER 13,1983)

MILK (STATIONS 12,13,14A)

Milk samples were collected monthly from stations 12 and 13. The farm at station 14A was closed and no milk samples were available. The monthly samples (6) were analyzed for gamma emitting isotopes. Potassium-40, which is a naturally occurring terrestrial nuclide, occurred at normal levels. There was one detection of Cs-137, a fission product, at station 12, 8.3 miles, 310 degrees. This radioisotope was monitored in other areas of the United States and is probably caused by fallout from previous atmospheric nuclear weapons testing.

The monthly samples from each station were composited and analyzed for Sr-89 and 90. The average Sr-90 activity was 3.1 pCi/ liter. Figure 6 shows the level of Sr-90 in pCi/ liter for each quarter since 1977. The level has remained stable with a slight decline. This same decline in the level of Sr-90 has occurred worldwide. There were no detections of Sr-89.

Iodine-131, which was analyzed in the monthly samples (6), was below the x limits of detection of 0.5 pC1/ liter. These results indicate that no detect-N able NAPS releases occurred that adversely affected milk samples.

FISH (STATIONS 08,09)

No fish samples were collected during the fourth quarter. Fish is collected annually at the beginning of the season from two stations. Fish samples were collected and analyzed on May 10. The results are described on pages 198 and 228.

TERRESTRIAL VEGETATION (STATION 21, 23)

Samples of terrestrial vegetation were collected and analyzed during the third quarter on August 12. Vegetation is collected once annually. The results are described on page 23C and 26C.

I V

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S g 9 1 U S

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! i !: i ij ;< ,1 I4 ;, ,,.; i 1 1iI'I .';aIii,I;.41-!j4i1;l 1i1j ,

l TABLE 7 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

PAT HW A(- INGESTI31 COMPI LATI ON - CUARTERLY SJMMARY VIRGINIA ELEC TRIC & POWER COMP ANY I S AMPL E - M ILK CONTROL - N04TH ANMA P0 bER STA TION UNITS - PCI/ LITER A1AlfSIS NO L IM IT 3F ALL INDICATO% SAMPLES LOCATION WITH HIGHEST MEAN CD1 TROL LOCA TION N3 N- R E PORTI NG . PE RI OD DETECTION MEAN x E-00 MEAN X E-00 MEAN X E-00 R OUTI NE MEAN X E-00 RANGE STATION FRACTION R ANGE RAN GE FtACTION STATION DESCRIPTION FR AC TI3N l

l I-131 6 0.500 LT 0.500 0 10/12/83-12/13/83 I LT 0.300 -LT 0.500 BY CHEMICAL SEPARATION t l 000/006 i

1 S AMPL E 3 LT 0.00000 0 10/12/83-12/13/83 LT 0. 0000 0-L T 0.00000 (a) 000/004 SR-89 2 LT 1. 0 0 10/12/83-12/13/83 LT 1.0 -LT 1. 0 ,

000/002 I l

SR-90 2 0.800 3.1 3.5 0 10/12/83-12/13/83 2.7 -

3.5 12 001/001 3 .5 -

3.5 002/002 HOLLADAY DA I RY-8.3 MI . 310 DE G.

K-40 6 200.0 1396. 1410. 0 10/12/83-12/13/S3 1370. -

1410. 002/002 1340. -1480.

006/006 1410.

12 002/002 1410. - 1410.

HOLLADAY DAI RY-8.3 MI.310 DEG.

1 I-131 6 0.5000 LT 50.00 0 10/12/83-12/13/93 LT 20.00 -LT 50.00 BY GAMMA SPECTROMETRY 000/006

-(a) No samples of milk collected from Statior. 14A in October, November or December; farm closed.

5 o

O O O TABLE 7 !

RADIOLO3I CAL ENVI RONMENT AL MONITORING PROGRAM SLMMARY PATHWA(- INGESTION COMPI LATION - Ql ARTERLY.

SUMMARY

VIRGINIA ELECTRIC E P0hER COPPAhY SAMPLE - M ILK CONTRO L - NORTH ANNA POWER STATI ON U4ITS - PCI/L ITER AN ALYSI S NO LIMIT OF ALL INDIC4 TOR SA MP LE S LOC ATIOh WITH HIGHEST MEAN - CONTROL L3 CATION NON .REPORTIhG PERIOD DETECTION MEAN X E-C0 MEAN E E-00 M E AN X E- CC RO UTI NE MEAN X E-00 RAtGE ST ATION FRACTION RANGE RANGE FR AC TI ON ST ATION DESCRIPTION FRACTION CS-137 6 3.00 8.56 8.56 0 10/12/83-12/13/83 8.56 -

8.56 12 001/002 8.56 -

8.56 001/006 HO LL AD AY DAI RY-8 3 MI .310 DEC.

l l

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______..n.___._.

MMfW. .

ISOTOPES CONCLUSIONS

~

(SEPTEMBER 28, 1983 -- DECEMBER 31,1983) l The results of the radiological environmental monitoring program conduct-ed in the vicinity of the North Anna Power Station show that no measurable

, releases attributable to the operations of Units One and Two were detected j above the prescribed limits of detection.

' Increasing levels of tritium activity have been nonitored since the start of operations in 1978. The tritium activity at the discharge lagoon

-during the fourth quarter was 3960 pCi/ liter. In addition, the tritium level

! at Lake Anna, 2.2 miles Upstream (Station 09) has increased to 2900 pCi/ liter.

l The level of tritium in the North Anna River downstream 5.8 miles (Station 11) l- was 3420 pCi/ liter.

It may be concluded the operations of the North Anna Power Station have had no detrimental impact on the environment in the vicinity of the plant.

l

!O i

O -

23D r - -- -

MM ISOTOPES APPENDIX D FOURTH QUARTER 1983

. l i

DATA TABLES by SAMPLE TYPE, STATION AND COLLECTION DATE D-1

'l

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O O O VIRGINI A E LECTRI C E POWER COMPANY NORTH ANNA PCWER STATION EXPOSLAE PATHW AY . AIRBORNE AIR PARTICULATE E CHARCOAL FILTERS ST ATI ON NUMBER 01 ONSITE-0.2 MI.42 DEG COLL. TIME AP FILTER M I D-C0J1 T CHARCOAL FILTER START STOP GROSS BET A TIME I-131 DATE DATE V3 L UME UNITS (PCI/CU. Mi DATE TIME (PCI/CU. M i 09/27 10/04 1.38E 02 CU. M 3.3 +-3.6 E-02 10/14 L.T. 2. E- 02 10/04 10/11 1.375 02 CU. M 2.1 + -0. 5 E -0 2 10/21 L . T. 2. E-02 10/11 10/18 1.3 7E C2 C U. M 2.6 + -0. 6 E -02 10/26 L.T. 1. E-02 10/18 10/25 1. 26E 02- C U. M 1.9 +-3.6 E-02 11/04 L.T. 2. E-02 OL 10/25 11/01 1.38E 02 C U. M 2 8 +-0.5 E-02 11/10 L . T. 2. E- 02 11/01 11/08 1.31E 02 C U. M 1.7 +-0. 5 E -3 2 11/22 L.T. 2. E-02 11/08 11/15 1 35E 02 CU. M 2.5 +-0.6 E-02 11/29 L . T. 1. E-02 11/15 11/22 1.33E 02 C U. M 2.4 + -0. 6 E -32 12/04 L.T. 2. E-02 11/22 11/29 1.24E 02 C U. M 1. 4 + -0. 6 E -02 12/ 10 L.T. 2. E-02 11/29 12/06 1. 34E 02 CU. M 2. 8 +-0.6 E-02 12/21 L.T. 2. E-02 12/06 12/13 6.21E 01 CU. M 3.6 +-1.1 E-32 12/22 L . T. 3. E 02 12/13 12/20 1.35E 02 C U. M 3.3 +-0.6 E-02 01/06 L.T. 2. E-02 12/20 12/27 1 31E 02 C U. M 3.0 +-0.6 E-02 01/04 L.T. 1. E-02

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( l v s (D VIRGINIA ELECTRIC E POWER COMP ANY NORTH ANNA PCWER STATION EXPOSURE PATHW AY - AIRBORNE A!4 PARTICUL ATE E CHARCOAL FILTERS

. ST ATI ON NUMBER 02 FREDERICKS HALL-5.3 #1. 225 DEG.

COLL . T IME AP FILTER M I D- C0J NT CHARCOAL FIL TER START STOP GROSS SETA TIME I-131 DATE DATE V3L UME UNITS (PCI/CU. Mi DATE TIME ( PC I /C U. Mi 09/27 10/04 1.38E 02 C U. M 4. 2 + -3. 7 E -02 10/ 14 L.T. 2. E-02 10/04 10/11 1.37E 02 CU. M 2.0 +-0.5 E-02 10/21 L . T. 1. E-C2 10/11 10/18 1 .3 85 02 C U. M 2. 6 + - 0. 6 E -0 2 10/25 L.T. 1. E-02 10/18 10/25 1.36E 02 C U. M 2. 3 + -0.5 E -02 11/ 04 L.T. 2. E-02 '

10/25 11/01 1. 35E 02 CU. M 3.0 +-0.6 E-02 11/10 L . T. 9. E-C3 11/01 11/08 1.385 02 C U. M 1. 6 + - 0. 5 E -0 2 11/22 L.T. 2. E-02 11/08 11/15 1.3BE 02 C U. M 2.2 +-0.6 E-02 11/29 L.T. 1. E-02 11/15 11/22 1.37E 02 CU. M 2. 3 +- 0.6 E -02 12/04 L . T. 2. E-02 11/22 11/29 1.37E 02- CU. M 2. 7 + -0. 6 E -02 12/07 L.T. 2. E-02 11/29 12/06 1.39E 02 CU. M 2.1 +-3.6 E-02 12/21 L.T. 2. E- 02 12/06 12/13 .1. 3 6E 02 C U. M 2. 8 +-0.5 E-02 12/23 L . T. 1. E-02 12/13 12/20 1.405 02 C U. M 2. 7 + -0. 6 E -3 2 01/08 L.T. 2. E-02 12/20 12/27 1 34E 02 CU. M 2. 3 + -3. 6 E -02 01/04 L.T. 2. E-02

O O O VIR31NI A ELECTRIC & POWER COMP ANY

'h0RTH ANNA POWER STATION EXPOSURE P ATHWAY - AIRBORNE AIR PARTICULATE & CH ARCOAL FILTERS STATIch NUMBER 33 MINERAL-7.1 MI .2 43 DEG.

COLL. TIME AP FILTER MID-CDUNT CHARC3 AL FIL TER START ST3P GROSS BETA TIME . 1-131 DATE DATE V3L UME UNITS (PCI/CU. M1 DATE TIME IPC I/C U. M I 09/27 10/04 1.36E 02 C U. M 4. 0 + -0. 7 E -02 10/ 14 L.T. 2. E-02 10/04 10/11 1.38E . 02 C U. M 2.9 +-3.6 E-02 10/21 L.T. 2. E-02 10/11 10/18 1 38E 02 CU. M 3.0 +-0.5 E -02 10/27 L . T. 2. E-02 10/18 10/25 1 36E 02 C U. M 2. 5 * -3. 6 E -02 11/04 L.T. 1. E-02 '~

10/25 11/01 1.38E 02 C U. M 2.6 +-3.5 E-02 11/10 L.T. 8. E-03 11/01 11/08 1.375 02 CU. M 2.5 +-0.5 E-02 11/22 L.T. 2. E-02 11/08 11/15 1 38E 02 C U. M 2. 0 t -3. 5 E -02 11/29 L.T. 2. E-02 11/15 11/22 7.97E 01 CU. M 1. 8 +-0.8 E-02 12/08 L . T. 2. E-02 11/22 11/29 1.29E 02 C U. M 3. 7 + -0. 7 E -3 2 12/09 L.T. 2. E- 02 11/29 12/06 1.38E 02 C U. M 3. 0 * -3. 6 E -02 12/21 L.T. 2. E-02 12/06 12/13 1 37E 02 C U. M 2.5 +-0.6 E-02 12/23 L.T. 2. E- 02 12/13 12/20 1 39E-02 CU. M 2. 9 + - 0. 5 E -02 01/06 L . T. 2. E-02 12/20 12/27 1.36E 02 C U. M 2.4 t-3.6 E-02 01/04 L.T. 1. E-02

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O O O VIRGileI A ELECTRIC C POWER COMP ANY NORTH ANIM POWER ST ATION EXPOSURE PATHWAY - AIR 80RhE AIR PARTICULATE C CHARCOAL FILTERS STATION huPBER 04 HARE S

ROSSRCADS-5.1 MI.287 DEG.

CDLL. TIME AP FILTER MID-C3UMT CHARCDAL FILTER START STOP 3ROSS SETA TIME I-131 DATE DATE V3.U4E UNITS ( PC I /C U. MI DATE TIME I PCI /C U. M i 09/2T 10/04 1.395 02 C U. M 3 .1 + -0. 6 E -0 2 10/14 L.T. 1. E- 02 10/04 10/11 1.3BE 02 C U. M 2. 4 + -3. 5 E -02 10/22 L.T. 8. E-03 10/11 10/18 1. 38E 02 CU. M 2.0 +-0.5 E-02 10/27 L.T. 1. E-02 10/18 10/25 1 365 02 CU. M 2 .1 + -0. 5 E -3 2 11/04 L . T. 1. E- 02 10/25 11/01 1.38E 02 C U. M 2. 3 + -0. 5 E -02 11/10 L.T. 1. E-02 11/01 11/08 1 38E 02 CU. M 2.4 +-0.5 E-02 11/22 L.T. 2. E-02 11/08 11/15 1.40E 02 CU. M 1.8 +-0.5 E-02 ,11/29 L.T. 2. E-02 11/15 11/22 1.36E 02 CU. M 2.5 +-3.6 E-02 12/05 L.T. 2. E- 02 11/22 11/29 1.25E 02 CU. M 1.6 +-0.6 E-02 12/07 L . T. 1. E-02 11/29 12/06 1.38E 02 C U. M 3. 0 + -0. 6 E-02 12/21 L.T. 2. E-02 12/06 12/13 1.38E 02 CU. M 2. 3 + -3.6 E -02 12/ 23 L.T. 2. E-02 12/13 12/20 1.22E 02 CU. M 3 7 +-0.7 E-02 01/08 L . T. 2. E- 02 12/20 12/27 1.385 02 C U. M 2.7 + -0. 6 E-32 01/04 L.T. 1. E-02 O

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VIRGINI A E LECTRI C C POWER COMPAW NORTH ANNA PCWER ST ATION EXPOSURE PATHWAY - AIR 80RNE AIR PARTICULATE C CHARCOAL FILTERS ST ATION NUMBER 05 G000 HOPE CHURC4-4.2 MI.20 CEG.

COLL. TIME AP FILTER MID-C3UNT CH4RCDAL F ILTER STA4T STOP 3ROSS BETA TIME I-131-DATE DATE V3L UME UNI TS I PC I /C U. MI DATE TIME IPCI /CU. M i 09/27 10/04 1 392 02 CU. M 3. 8 + - 0. 7 E -0 2 10/14 L . T. 2. E-02 10/04 10/11 1.36E 02 CU.M 3.1 *-0.6 E-02 10/22 L.T. 9. E-03 10/11 10/18 1.39E 02 C U. M 2. 6 + -3. 6 E -0 2 10/ 26 L.T. 1. E-02 10/18 10/25 1.38E 02 CU. 4 2.1 + -0.5 E -0 2 11/04 L . T. 2. E-02 10/25 11/01 1.36E 02 CU. M 2. 0 t -0. 5 E -02 11/10 L.T. 1. E-02 11/01 11/08 1.39E 02 C u. M 2.3 +-3.5 E-02 11/22 L.T. 2. E-02 11/08 11/15 1 405 02 C U. M 1. 9 + -0. 5 E -3 2 11/29 L.T. 2. E-02 11/ 15 11/22 1.38E 02 C U. M 2. 2 t -3. 5 E -02 12/05 L.T. 2. E-02 11/22 11/29 1.38E 02 CU. M 3.2 +-0.7 E-02 12/09 L . T. 2. E-C2 11/29 12/06 1.405 02 C U. M 2.7 t-0.6 E-02 12/21 L . T. ' 2. E-02 12/ 06 12/13 1.37E 02 C U. M 2.6 *-0.6 E-02 12/23 L.T. 1. E-02 12/13 12/20 1. 40E 02 CU. M 3.1 +-0.6 E -02 01/09 L . T. 2. E-02 12/20 12/27 a. 375 02 C U. M 2.6 + -0. 6 E-3 2 01/04 L . T. 1. E-02

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O. O LO VIRGINI A E LECTRI C C POWER COMPANY NORTH ANNA PCWER ST ATION EXPOSURE PATHWAY - AIRBORNE AIR PARTICULATE & CHARCO AL FILT ERS ST ATION NUPBER 05A STURGE 0N' S C RE E K-3.2 MI. 11 DEG.

COLL. TIME AP FILTER MID-COU4T CHARCOAL FILTER START STOP 3ROSS BETA TIME I-131 DATE DATE V3L UME UNI TS IPCI/CU. Mi DATE TIME IPCI /CU. M i 09/27 10/04 1 335 02 C U. M 7.2 +-0.6 E-02 10/14 L . T. 2. E- 02 10/ 04 10/11 1 273 02 C U. M 4. 9 + -0. 7 E -3 2 10/22 L.T. 9. E- 03 10/11 10/18 1.34E 02 C U. M 6. F + -3. 8 E -02 10/26 L.T. 1. E-02

10/18 10/25 1.33E 02 C U. M 3.2 +-0.6 E-02 11/04 L . T. .1. E-02 10/25 11/01 1.295 02 C U. M 2.5 +-0.6 E -32 11/10 L . T. 1. E- 02 11/01 11/08 1.28E 02 C U. M 2.1 6 -3.5 E -02 11/22 L.T. 2. E-02 11/08 11/ 15 1.325 02 CU. M 2. 5 + -0. 6 E -3 2 11/29 L . T. 1. E-02 11/15 11/22 1.13E 02 CU. M 2. 7 + -0. 7 E -02 12/07 L.T. 2. E-02 11/22 11/29 1.21E 02 C U. M 3.2 +-0.7 E-02 12/09 L.T. 2. E-02 11/29 12/06 1.375 02 CU. M 3.3 +-0.7 E-02 12/22 L . T. 2. E-02 12/06 12/13 1.34E 02 CU. M 2.5 e -0. 6 E -02 12/23 L.T. 2. E-02 12/13 12/20 1.31E 02 C U. M 3.2 +-3.7 E-02 01/06 L.T. 1. E- 02 12/20 12/27 1 35E 02 CU. M 2.5 +-0.5 E-02 01/04 L . T. 1. E-C2

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VI RGINI4 E LE CTRI C C POWER ~ COMPANY NORTH ANNA PCWER ST ATION EXPOSURE PATHWAY - AIR 80RNE AIR P4RTICULATE C CHARCOAL FILT ERS ST ATION NUMBER 06 LEVY-4.T MI.115 OEG.

COLL. T!9E AP FILTER MI O- C0J1 T CHARCOAL FILTER START STOP GROSS BETA TIME I-131 D AT E DATE V3 L UM E UNITS IPCI/CU. MI OATE TIME IPCI/CU. M i 09/27 10/04 1 38E 02 CU. M 3.7 +-0.7 E-02 10/14 L . T. 2. E-C2 10/04 10/11 1 37I 02 CU. M 2.1 + -0. 5 E-3 2 10/21 L . T. 1. E-02 10/11 10/18 1.37E 02 C U. M 4. 3 + -3. 7 E -02 10/26 L.T. 8. E-03 '

10/18 10/25 1.35E 02 C U. M 2.5 +-0.6 E-02 11/04 L.T. 2. E-02 10/25 11/01 1.37E 02 CU. M 2.4 +-0.5 E -02 11/10 L . T. 2. E-02 11/01 11/08 1 38E 02 CU. M 2 1 + -0. 5 E -02 11/22 L.T. 2. E-02 11/08 11/15 1.385 02 C U. M 2 2 +-0.5 E-02 11/29 L . T. 2. E-C2 11/15 11/22 1 375 02 C U. M 2.4 +-0.5 E -0 2 12/05 L . T. - 2. E- 02 11/22 11/29 1.36E 02 C U. M 2. 2 + -3. 6 E -02 12/09 L.T. 2. E-02 11/29 12/06 1.38E 02 CU. M 3.0 +-0.6 E-02 12/21 L . T. 1. E- 02 12/06 12/13 1.365 02 CU. M 3. 0 + -0. 6 E-0 2 12/23 L.T. 2. E-02 12/13 12/20 1 40E 02 C U. M 3. 2 + -3.6 - E -02 01/ 06 L.T. 1. E-02 12/20 12/27 1 36E 02 C U. M 2. 9 +-0.6 E-02 01/04 L.T. 1. E- 02 o

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I VI RGI NI 4 E LECTRI C & POWER COMP ANY NORTH ANNA PCWER STATION EXPOSURE PATHWAY - AIR 8ORNE AIR PARTICULATE & CH ARCOAL FILTERS ST ATION NUMBER OT BUMPA55-7.3 MI.167 DEG.

CDLL. TIM E AP FILTE R M I D- C0J 4 T CHARCOAL FILTER START STDP GROSS BETA TIME I-131 DATE DATE V3 L UME UNITS IPCI/CU. MI DATE TIME IPC I/CU. M 1 09/27 10/04 1 33E 02 C U. M 4.0 *-3.7 E-02 10/ 14 L.T. 2. E-02 10/04 10/11 1.375 02 CU. M 2. 6 +-0.5 E-02 10/23 L . T. 8. E-03 10/11 10/18 1.325 02 C U. M 2.4 +-0. 6 E-32 10/25 L . T. 7. E-03 10/ 18 10/25 1 32E 02 C U. M 2. 6 + -3. 6 E -02 11/04 L.T. 1. E-02 3 10/25 11/01 1. 32E 02 C U. M 2.1 +-0.5 E-02 11/10 L . T. 1. E- 02 11/01 11/08 1.321 02 CU. M 2.6 +-0. 6 E-3 2 11/22 L.T. 2. E-02 11/08 11/15 1. 33E 02 C U. M 1. 7 . + -0. 5 E -0 2 11/29 L.f. 2. E-C2 11/15 11/22 1.31E 02 CU. M 2. 3 + -0. 6 E -3 2 12/04 L . T. 2. E-02 11/22 11/29 1 31E 02 C U. M 2. 0 + -0. 6 E -02 12/09 L.T. 2. E-02 11/29 12/06 1.32E 02 CU. M 2. 8 +-0.6 E-02 12/21 L.T. 2. E-02 12/06 12/13 1.29E 02 CU. M 2. 9 + -0.6 E-02 12/23 L . T. 1. E-02 12/13 12/20 1.23E 02 CU. M 3. 0 * -0. 7 E -02 01/06 L.T. 2. E-02 12/20 12/27 1.23E 02 C U. M 2. 7 + -3. 7 E-02 01/04 L.T. 2. E- 02

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l WIR3INI4 ELECTRIC E POWER COMP ANY NORTH ANNA POWER STAIION EXPOSURE PATHWAY - AIRBORNE AIR PARTICULATE & CHARCOAL FILTERS STATI0h NUMBER 21 ROUTE 685-1 0 MI.331 DEG.

COL L . T I9 E AP FILTER M ID- C0J'4 T CHARCOAL FILTER START ST3P GROSS BETA TIME I-131 DATE DATE W3L UME UNI T S IPCI/CO. Mi DATE TIME IPC I/CU. M i 09/2T 10/04 1.41E 02 C U. M 3. 0 * -0. 6 E -02 10/ 14 L.T. 1. E-02 10/04 10/11 1.38E 02 C U. M 2. 6 +-0.6 E-02 10/21 L.T. 2. E-02 10/11 10/18 1.405 02 C U. M 3 . T + - 0. 6 E -0 2 10/26 L . T. 1. E- 02 '

10/18 10/25 1.4OE 02 C U. M 2.5 +-3.6 E-02 11/ 04 L.T. 1. E-02 10/25 11/01 1.40E 02 C U. M 2.3 +-0.5 E-02 11/10 L.T. 2. E-02 11/01 11/08 1.39E 02 CU. M 2. 9 +-0.5 E-02 11/22 L.T. 2. E-02 11/08 11/15 1.41E 02 C U. M 1.8 t-3.5 E-02 11/29 L.T. 2. E- 02 11/15 11/22 1.395 02 CU. M 2.4 +-0.5 E-02 12/04 L . T. 2. E-02 11/22 11/29 1.053 02 C U. M 3.4 *-0.8 E -32 12/08 L.T. 2. E-02 11/29 12/06 1 40E 02 C U. M 2. T * -3. 6 E -02 12/ 21 L.T. 2. E-02 12/06 12/13 1 39- 02 C U. M 3.0 +-0.6 E-02 12/23 L . T. 1. E-C2 12/13 12/20 1.445 02 C U. M 2.T +-0.6 E-3 2 01/06 L.T. I.. E-02 12/20 12/2T 1.68E 02 C U. M 2. 3 * -3. 5 E -02 01/04 L.T. 6.- E-03

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O O O VIR3INI A ELECTsiIC C POWER COMPANY NORTi4 ANNA POWER ST ATION E XPO SURE . P ATHW AY - AIR 80RNE AIR PARTICULATE C CHASCOAL FILTERS STATIOk WMBER 22 ROUTE 700-1 0 MI.242 DEG.

CDLL. TIME AP FILTER MID-CDUNT CHARC3 AL FIL TER START ST3P GROSS SETA TIME I-131 OATE DATE V3L UME UNI T S IPC I/ CU. Mi DATE T IME (PC I/C U. M I 09/2T 10/04 1.39E 02 C U. M 3. 3 * -3. 6 E -02 10/ 14 L.T. 1. E-02 10/04 10/11 1.36E 02 CU. M 2.3 *-3.6 E-02 10/21 L.T. 1. E-G2 10/11 10/18 1 39E 02 CU. M 3.0 +-0.5 E-02 10/26 L . T. 6. E-03 10/18 10/25 1.38E 02 C U. M 2. 8 * -3. 6 E -0 2 11/04 L.T. 1. E-02 10/25 11/01 1.39E 02 C U. M 2.0 *-3.5 E-02 11/10 L.T. 7. E- 03 11/01 11/08 1.36E 02 CU. M 2.1 *-0.5 E-02 11/22 L.T. 2. E-02 11/06 11/15 1.4 0E 02 C U. M 1. 2 * -3. 5 E -02 11/29 L.T. 2. E-02 11/15 11/22 1.38E 02 CU. M 2.7 +-0.6 E-02 12/04 L . T. 2. E-C2 11/22 11/29 1.395 02 CU. M 3.6 *-0. T E -3 2 12/09 L . T. 2. E- 02 11/29 12/06 1.39E 02 C U. M 2.7 + -3. 6 E -02 12/21 L.T. 2. E-02 12/06 12/13 1.35E 02 C U. M 2. 8 +-0.6 E-02 12/26 L.T. 2. E-02 12/13 12/20 1.45E 02 CU. M 2.2 *-0.5 E -02 01/06 L . T. 2. E-02 12/20 12/27 1.34E 02 C U. M 3. T * -3. 7 E -02 01/04 L.T. 8. E-03

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VIRGINI A ELECTRIC & POWER COMPANir h04T4 ANNA power ST ATION EXPOSURI P ATHWAY - AIR 8ORNE AIR PARTICULATE & CHAACOAL FILTEAS STATION NJP8ER 23 ASPEN HI LLS-0.9 PI.158 DEG.

COLL. TIME AP FILTER 410-COUNT CH4R;0AL FILTER ST ART ST3P SROSS SETA TIME I- 131 OATE DATE 40L umE UNITS (PC I / CU. PI DAT E T11E ( PCI /C W. Ml l 09/27 10/04 1.41E 02 C U. M 2. 0 + -0. 5 E -32 10/14 L.T. 1. E-02 l 10/04 10/11 1.39E 02 C U. M 2. 3 + -3. 5 E -02 10/22 L.T. 8. E-03 10/11 10/18 1. 38E 02 C U. M 2.0 +-0.5 E-02 10/26 L . T. 5. E-C3 10/18 10/25 1.385 02 C U. M 1.5 +-0.5 E-32 11/04 L.T. 1. E-02 '

10/25 11/01 1.40E 02 C U. M 2. 8 * -3. 7 E -02 11/10 L.T. 9. E-03

! 11/01 11/08 1.33E 02 CU. M 1.9 +-0.5 E-02 11/22 L.T. 2. E-02 l

11/08 11/15 1 32E 02 CU. M 1. 5 + -3. 5 E -r 2 11/29 L.T. 2. E-02 l 11/15 11/22 1.34E 02 C U. M 1.7 +-3.5 E-02 12/04 L.T. 2. E- 02 l 11/22 11/29 1. 32E 02 CU. M 8.6 +-2.3 E-03 12/09 L . T. 2. E-02 l 11/29 12/06 1 41E 02 C U. M 2.2 + -0. 6 E-02 12/21 L.T. 2. E-02 12/06 12/13 1.31E 02 C U. M 1. 7 + -3. 5 E -02 12/ 26 L.T. 1. E-02 12/13 12/20 1.27E 02 C U. M 2.1 +-0.5 E-02 01/08 L . T. 2. E- C2 12/20 12/27 1.3 7E C2 C U. M 2.1 +-0.6 E-32 01/04 L.T. 7. E- 03

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(~s (d d VIRGINI A E LECTRI C & POWER COMPANf NORTH ANNA POWER ST ATICN EXPOSURE PATHWAY - AIRBORNE AIR PARTICULATE & CHARCOAL FILTERS STATION NUPSER 24 OR ANGE-2 2.0 MI .325 DEG. ICONTROL I COLL. TIME AP FILTER M I O-C3 UNT CHARCOAL FILTER ST44T STOP 3R055 BETA TIME I-131 DATE DATE V3L tME tMITS I PC I/C U. Mi DATE TIME IPCI /CU. M 1 09/27 10/04 1. 39E 02 CU. M 4.2 +-0. 7 E-02 10/17 L . T. 7. E-03 10/ 04 10/11 1.40E 02 C U. M 2.3 *-3.5 E-02 10/21 L.T. 1. E-02 10/11 10/18 1.41E 02 C U. M 2 4 * -3 5 E -02 10/26 L.T. S. E- 03 10/18 10/25 1.39E 02 CU. M 2.2 +-0.5 E-02 11/04 L . T. 1. E-C2 '

10/25 11/01 1.415 02 C U. M 3.3 + -0. 5 E-32 11/10 L.T. 2. E-02 11/01 11/08 1.34E 02 CU. M 2. 3 *-3.5 E -02 11/22 L.T. 2. E-02 11/08 11/15 1.343 02 CU. M 2.3 +-0.6 E-32 11/29 L . T. 2. E-02 11/15 11/22 1.35E 02 C U. M 2.1 * -0.5 E -02 12/05 L.T. 2. E-02 11/22 11/29 1 40E 02 C U. M 9. 8 +-2.3 E-0 3 12/09 L.T. 2. E- 02 11/29 12/ 06 1 415 02 CU. M 2 . 7 + -0. 6 E -3 2 12/21 L . T. 1. E- 02 12/ 06 12/13 1.39E 02 CU.M 2.4 *-3.6 E-02 12/26 L.T. 2. E-02 12/13 12/20 1.41E 02 C U. M 2.5 +-0.6 E-02 01/06 L.T. 2. E-02 12/20 12/27 1.41E 02 CU. M 2.3 +-0.6 E-02 01/04 L . T. 5. E-03

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VIRGINI A ELECTRIC t. POWER COMPANY peDRTH ANNA P0teER ST ATION EXPOSURE PATHWAY - AIR 60RNE COMPOSITE AIR PARTICULATE FILTERS IPCI/Cu. M i STATION NUMBEA 01 ONSI TE-3.2 MI.42 DEG OM E C3LLECTED 09/2T-12 /2 7 GAMMA SPECT AJ1 444 LYSIS SE-7 4.55+-1 76E-02 K-40 3 10+-1.705-02 fus-54 L . T. 2. E-03 CO-54 L.T. 2. E-03 FE-59 L.T. 6. E-03 CD-60 L. T. 2. E-03 Z1-65 L.T. 5. E-03 2R-95 L.T. 3. E-03 RJ-103 L . T. 3. E-C3 RJ-106 L. T. 2. E-02 I-131 L.T. 2. E CS-134 L . T. 2. E-C3 CS-137 L . T. 2. E-03 SA-140 L.T. 1. E-02 CE-141 L.T. 3. E-03 CE-144 L . T. 9. E-03 RA-226 L.T. 3. E-02 TM-228 L.T. 3. E-03

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O O O WI RGINI A E LE CTRI C & PONER CCMPANY NORTH ANNA PQdER ST ATION EXPOSURE PATHWAv - AlR60RME COMPOSITE AIR PARTICULATE FILT ERS IPCI/CU. M I ST ATI ON NUM8E R 02 FREDERI;KS H ALL-5.3 MI. 225 DEG.

EAT E CDLL ECTED 09/27-12/27 GAMMA SPECTRJ4 A4ALYSIS BE-7 7.21 +-1. 94E-02 K-40 L . T. 5. E-02 MN-54 L . T. 2. E- 03 CD-58 L . T. 2. E-03 FE-59 L.T. 5. E-03 CD-60 L.T. 2. E *3 2N-65 L . T. 4. E-03 ZR-95 L. T. .. E-03 RU-103 L.T. 2. E-05 RJ-106 L . T. 1. E-02 I-131 L. T. 2. E-03 C5-134 L. T. 2. E-03 C5-137 L . T. 2. 5-03 84-143 L.T. 1. E-02 CE-141 L.T. 3. E-03 CE-144 L . T. 8. E- 03 RA-226 L . T. 2. E-02 TM-228 L.T. 3. E-03

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O O O VIRGINIL E LECTRI C C POWER COMPANY NORTH ANh4 PCWER ST ATICN EXPO 5uRE PATHWAY - AIRBORNE COMPOSITE AIR PARTICULATE FILT ERS IPCI/CU. M I STATION Mup0ER 03 PIhER4L-7.1 PI .243 DEG.

DAT E COLL ECTED 09/ 2T-12 /2 7 GAMMA SPECTRJ% ANALY SI S BE-T 5.33+-1 1TE-02 K-40 L.T. 2. E-02 '

MN-54 L . T. 9. E-04 CD-58 L . T. 1. E-03 FE-59 L.T. 2. E-03 CD-60 L.T. 1. E-C3 2N-65 L . T. 3. E-03 ZR-95 L.T. 1. E-03 Au-103 L.T. 1. E-03 R3-106 L . T. 9. E-03 1-131 L.T. 1. E-02 CS-134 L.T. 1. E-03 CS- 13T L . T. 1. E-C3 84-140 L . T. 6. E-03 CE-141 L.T. 2. E-03 CE-144 L.T. 6. E- C3 RA-226 L . T. 2. E-02 TM-228 L.T. 2. E-03 l

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O O O VIRGIN!4 E LECTRI C & POWER COMPANY NORTH ANNA PGdER ST ATION EXPOSURE PATHW AY - AIRBORNE COMPOSITE AIR PARTICULATE FILTERS (PC1/ C' J . M i ST ATI 0h NUMBER 04 HARES CROSSROADS-5.1 MI.2BT DEG.

Of.TE COLL ECTED 09/2 T-12 /2T 6AMMA SPECTRUM ANALYSI S BE-T 4. 99 +- 1. 83 E - 02 E-40 4.60+-1.T8E-02 ,'

M1-54 L.T. 2. E-03 CO-58 L. T. 2. E-03 FE-59 L.T. 5. E-03 C3-60 L.T. 2. E-03 ZN-65 L . T. 5. E- 03 ZR-95 L . T. 2. E-03 RU-103 L.T. 3. E-03 RU-106 L . T. 2. E- 02 I-131 L.T. 2. E- 02 CS-134 L.T. 2. E-03 CS-13T L.T. 2. E - 03 8A-140 L . T. 9. E-03 CE-141 L . T. ' 4. E-03 CE-144 L.T. 1. E-02 RA-226 L . T. 3. E- 02 TH-228 L.T. 3. E-03

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O O O-VIRGINI4 E LECTRIC E POWER COMPANY NORTH ANNA PCWER STATION EXPOSURE PATHWAf - AIRBORNE COMPOSITE AIR PARTICULATE FILTERS IPCI/CJ. M i ST ATI Oh NUMBER 05 G000 10PE CHURCH-4.2 MI.23 DEG.

D ATE COLL ECTED 09/2 7-12 /2 T G AMMA SPECTRUM ANALYSI S B E-7 4.10 + -1. 75 E - 02 K-40 L.T. 5. E-02 MN-54 L.T. 2. E-03 '

CO-58 L . T. 3. E-03 FE-59 L.T. 6. E-03 C3-60 L . T. 2. E-03 ZN-65 L . T. 5. E- 03 ZR-95 L . T. 3. E-03 RU-103 L.T. 2. E-03 RU-106 L.T. 2. E- 02 I-131 L . T. 2. E- 02 CS-134 L . T. 2. E-03 CS-137 L.T. 2. E- 03 8A-140 L. T. 1. E-02 CE-141 L.T. 3. E-03 CE-144 L.T. 8. E -03 RA-226 L . T. 2. E- 02 TH-228 L . T. 2. E-03

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O O O WI AGI NI A ELECTRIC E POWER COMP ANY NOR TH ANNA PCWER STATION EXPDSURE . PATHWAY - AIRBORNE COMPOSI TE AI R.PARTICUL ATE FILTERS

( PC I/ CU. M i STATIGA NUMBER 05A STURGE 0N'S C REEK-3.2 MI.11 DEG.

DATE COLLECTED 09/27-12/27 GAMMA SPECTRUM ANALYS! S BE-7 5. 8 5+ -1.4 05 - 02 E-40 3.91+-1.32E-02 MM-54 L.T. 1. E-03 '

CO-58 L . T. 1. E-C3 FE-59 L . T. 4. E-03 CD-60 L.T. 2. 6-03 ZN-65 L.T. 3. E-03 ZR-95 L . T. 2. E-03 RU-103 L.T. 2. E-03 PU-106 L.T. 1. E-02 I-131 L. T. 1. E-02 CS-134 L.T. 2. E-03 CS-137 8.08+-1.445-03 BA-140 L . T. 7. E - C3 CE-141 L . T. 3. E-03 CE-144 L.T. 6. E-03 RA-226 L.T. 2. E- 02 TH-228 L . T. 2. E-03

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I VIR3INI A ELECTRIC & POWER COMP ANY NORTH ANNA POWER STATION EXPOSURE PATHWAY - AIR 8ORNE r C3MPOSITE AIR PARTICULATE FILTERS

( PC I/ CU. N I STATIch NUMBER 06 LE VY-4.7 MI.115 DEG.

DAT E COLL ECT ED 09/2 7-12/2T i

GAMMA SPECTRUM ANALYSI 5 SE-7 5.15+-1.18E- 02

l K-40 2. 07+-1.12 E- 02 l 44-54 L.T. ' 9. E-04 l

CD-58 L . T. 1. E-C3 FE-59 L . T. 3. E-03 CD-60 L.T. 1. E-03 ZN-65 L.T. 2. E-03 ZR-95 L . T. 1. E-03 RU-103 L.T. 1. E-03 l RU-106 L.T. 8. E-03 I-131 L . T. 1. E- C2 CS-134 L.T. 1. E-03 CS-137 L.T. 1. E-03 8A-140 L . T. 4. E-C3 CE-141 L.T. 2. E-03 CE-144 L.T. 6. E-03 RA-226 L.T. 2. E- 02 TH-228 L . T. 2. E-03 I

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O O O WIR31NI A ELECTRIC E POWER COMP ANY NORTH AMMA POWER STATION EXPOSURE PATHWAY - AIR 8CRNE C3MPOSITE AIR PARTICULATE FILTERS I PC I/ CO. M 3 ST ATIOh NUMSER 07 SUMPASS-T.3 MI.167 DEG.

DATE COLLECTED 09/2 T-12/2 T i

sanMA SPECTRUM ANALYSIS l

l SE-7 5.17+-1.935-C2

(-40 L.T. 7. E-02 44-54 L.T. 2. E-03 C3-54 L.T. 2. E-03 FE-59 L . T. 6. E-03 C3-60 L.T. 2. E-03 Z4-65 L.T. 5. E-03 2R-95 L. T. 2. E-03 AU-103 L.T. 3. E-03 RU-106 L.T. 2. E-02 1-131 L . T. 2. E- C2 C5-134 L . T. 2. E-03 C5-137 L.T. 2. E-03 SA-140 L.T. 1. E-C2 l CE-141 L . T. 3. E-03 t CE-144 L.T. 8. E-03 I RA-226 L.T. 3. E-02 TM-228 L. T. 3. E-03

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WIR3IluS4 ELECTEIC E PesER C(BOPAf8V -

notTM A8 eses PouER STATIDs EXP054mE PATestear - AIAGORIuE CDsIPOSITE AIR P4BTICULATE FILTERS IPCI/CU. N 3 STATION appeEm 21 ADUTE 645-1.0 III.331 DEG.

DaTE C3LLECTED 09/2T-12 /27 GAsesta SPECTAJ4 AtsALYSIS DE-7 4.46+-1. T SE-02 E-40 L. T. 6. E-C2 s put-54 L.T. 2. E-03 C3-54 L.T. 2. E-05 -

FE-59 L . T. 6. E- C3 C3-60 L . T. 2. E-03 Z1-45 L.T. 4. E-03 24-95 L.T. 3. E-C3 RJ-103 L. T. 3. E-03 80-104 L.T. 2. E-02 1-131 L.T. 2. E-02

C5-134 L . T. 2. E-03 l C5-13T L.T. 2. E-03 BA-140 L.T. 1. E-02 CE-141 L . T. 4. E-03 CE-144 L. T. 1. E-02 RA-226 L.T. 3. E-02 Tse-228 L.T. 3. E-C3 i'

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VIRGlasIA ELECTRIC E PoesEA ComPA4f asDRT4 Asesen PoesEA 5TAtI04 EEPO5pa! PATHeeAY - AImeGeseE CosePOSITE AI A MBTICULATE FILT ERS I PC I/CU. Se I 5T4 tides sasPeER 22 AGUTE 730-1.0 PI .242 DEG.

Set E C3LLECTED 09/2T-12/2i Eastea SPECTage 444 LYSIS SE-7 4.S2+-1.2TE-02 K-40 2.40+-1 00E-C2 T

fee-54 L. T. 1. E-03 C3-54 L.T. 1. E-03 FE-59 L.T. 3. E-03 C3-60 L . T. 1. E-03 24-65 L.T. 2. E-03 ZA-95 L.T. 1. E-05 AJ-103 L.T. 1. E - C3 AJ-106 L.T. 1. E-02 I-131 L.T. 1. E-02 CS-134 L.T. 1. E-C3 C5-13T 1.82+-0.97E-03 SA-140 L.T. 5. E-03 CE-141 L.f. 2. E- C3 CE-144 L . T. T. E-03 AA-226 L.T. 2. E-02 Tse-228 L.T. 2. E-03 l

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O O O VIRGINI A E LECTRI C & POWER COMPANY NOATM ANNA POWER ST ATION EXPOSURE PATHWAY - AIRSORNE CDNPOSITE AIR PARTICULATE FILTERS IPCI/CU. M l STATION lalPBER 23 ,

ASPEN HI LLS-0.9 MI.156 DEG. -

DAT E C3LLECTED 09/2T-12 /2 T GAMOS SPECTRJ1 41ALYSIS SE-7 3. 83 +- 0. 90E-02 E-40 1.C3+-0.50E-C2 r M4-54 L . T. 8. E-04 T!

C3-Se L.T. 1. E-03 .

I FE-59 L.T. 2. E-03 CD-60 L. T. 9. E-04 Z4-65 L.T. 2. E-03 ZR-95 L.T. 9. E-04 i RJ-103 L . T. 1. E-03 l RJ-106 L.T. T. E-03 3 r I-131 L.T. 8. E-03 !

C5-134 L . T. 8. E-04 CS-137 L . T. 9. E-04 BA-140 L.T. 4. E-03 i CE-141 L.T. 2. E-03 :

CE-144 L. T. 4. E-03 RA-226 L.T. 1. E-02 TM-228 L.T. 1. E-03 i

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O O 0 VIRGINI A E LECTRI C C POWER COMPAW NORTH ANNA POWER ST ATION EXPOSURE PATHWAY - AIR 80RNE CDMPOSITE AIR PARTICUL ATE FILTERS I PCI /CU. M I STATION hup 8ER 24 OR A NGE -2 2. 0 Pl . 3 25 DEG. I CONT ROL )

DAT E COLLECTED 09/2T-12 /2 T GANIA SPECTRJ4 AMALYSIS BE-7 4.50+-2.21E-02 K-40 L . T. 7. E-C2 MN-54 L . T. 2. E-03 '.

CD-58 L.T. 2. E-03 FE-59 L.T. 6. E-03 CD-60 L . T. 2. E-03 24-65 L.T. 5. E-03 ZR-95 L.T. 2. E-03 RU-103 L . T. 3. E-03 RJ-106 L . T. 2. E-02 I-131 L.T. 2. E-02 CS-134 L.T. 2. E- 03 CS-137 L . T. 2. E- 03 BA-140 L.T. 9. E-03 CE-141 L.T. 3. E-03 CE-144 L . T. 8. E-03 RA-226 L.T. 3. E-02 TH-228 L.T. 3. E-03

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O' O O VIRGINI A ELECTRI C E POWER COMPANY NORTH ANNA PCWER STATION EXPOSURE PATHWAY - AIRBORNE W4 TER - PRECI PITATION (PCI/ LI T ER I STATION NUM8ER 01 ONSITE-0.2 MI. 42 DEG.

DATE C3LLECTED 10/01-10/31 11/01-11/30 12/01-12/31 RADI3CHENICAL A1ALYSIS GR-B 1. 6 +-0. 7 E 00 4.0 +-0.7 E 00 3.6 +-0.8 E 00 GR-B' 2.2 +-0.2 E-01 5.5 +-0.5 E-01 5.0 +-1.1 E-01 '

Deposition -

nCi/Sq. M.

Rainfall 5.37 5.38 6.18 in inches i'

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d O VIRGINIA' ELECTRIC'and POWER COMPANY-NORTH ANNA POWER-STATION EXPOSURE PATHWAY - AIRBORNE' ,

WATER - PRECIPITATION '

(PCI/ LITER)

STATION NUMBER 01 DATE COLLECTED 07/01/83-12/31/83 GAMMA SPECTRUM ANALYSIS BE-7 L.T. 5. E 01 K-40 L.T. 5. E 01 MN-54 L.T. 4 E 00 CO-58 L.T. 4. E 00 FE-59 L.T. 1. E 01 CO-60 L.T. 4 E 00 ZN-65 L.T. 9. E 00 ZR-95 L.T. 5. E 00 RU-103 L.T. 6. E 00 RU-106 L.T. 3. E 01 I-131 L.T. 4. E 01-CS-134 L.T. 4 E 00 CS-137 L.T. 4. E 00 BA-140 L.T. 2. E 01 CE-141 L.T. 1. E 01 CE-144 L.T. 3. E 01 RA-226 L.T. 8. E 01 TH-228 L.T. 8. .E 00 .

TRITIUM ANALYSIS H-3 2.2 +-0.9 E 02 O

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VIRGINIA ELECTRIC M0 POWER COMPANY NORTH ANNA POWER STATION EXPOSURE PATHWAY-AMBIENT GA MA RA0!ATION TLO, (milliress/ quarter)

. SAMPLE STATION FIRST QUARTER SECONO QUARTER THIRO QUARTER- FOURTH QUARTER sit / year NUCLIDE NUMBER 12/30/82-03/31/83 03/31/83-06/30/83 06/30/83-09/30/83 09/30/83-12/30/83 12/30/82-12/30/83 TLD 01 17.7i0.4 21.920.7 18.810.6 19.310.6 77.712.3 GAMMA RAOIATION 02 II.8t0.6 15.820.6 13.3tl.2 13.6t0.3 54.512.7 03 11.7i0.3 16.110.4 14.3t0.4 13.110.7 55.211.8 04 13.9t0.3 IG.4t0.2 16.0t0.2 14.3t0.3 60.611.0 i

l 05 15.810.7. 20.410.3 17.7t0.2 18.2 0.3 72.1tl.5 OSA 15.4t0.2 19.110.4 16.3t0.2 16.6t0.3 67.4tl.1 06 18.4t0.1 23.8t0.3 23.3tl.3 H 22.0t0.3 87.St2.0 07 14.3t0.2 18.510.5 16.5t0.2 16.7t0.2 66.011.1 21 14.3t0.2 18.8t0.6 16.520.2 16.810.9 66.4t1.9 22 20.4120.2 H 24.110.3 H 21.110.3 20.910.3 86.611.1 23 20.0t0.4 23.410.4 22.3tl.1 22.3t0.3 H 88.0t2.2 H CONTROL 24 10.310.2 L 14.5tl'.0 L 11.220.1 L 12.8t0.1 L 48.7tl.4 L TLD ALL 15.313.3 mR/91 days 19.4t3.3 mR/92 days (a) 17.3t3.6 mR/91 days 17.213.4 mR 91 days 69.2i13.5 mR/365 days GAMMA MAN i 0.17t0.04 mR/ day 0.21t0.04 mR/ day 0.19t0.04 mR/ day 0.1910.04 mR day 17.3t3.4 mR/ quarter RA01ATION 1 SIGMA H = HIGHEST 0.1910.04 mR/ day p L = LOWEST Si (a) These results were obtained with no control dosimeters for subtracting transit dose and system background.

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VIRGINI A ELECTRIC E POWER COMP ANY NORTH ANNA POWER STATION EXPOSURE PATHWAY - WATERBORNE WATER - SURF ACE (PC I/ LI T ER I STATION NUMBER 08 DI S;HAR3E LAG 00NS-1.1 MI.148 DEG.

DATE C3LLECTED 10/14 11/14 12/ 15 R ADIOCHEMICAL A1 ALYSIS I-131 L . T. 3. E - 01 L.T. 5. E-01 L .T . 4. E-01 l GAMMA SPECTRJ1 AN ALYSIS BE-7 L.T. 3. E 01 L.T. 3. E 01 L .T . 6. E 01 K-40 L. T. ' 5. ! 01 L.T. 5. E 01 L .T . 9. E 01 MN-54 L.T. 3. E 00 L.T . 3. E 00 L.T. 6. E 00 CJ-58 L.T. 3. E 00 L.T. 3. E 00 L.T. 1. E 01 FE-59 L . T. 7. E 00 L.T. 7. E 03 L .T . 7. E 00 j C3-60 L . T. 4. E GO L.T . 3. E 00 L.T. 1. E C1 Z1-65' L.T. 7. E 00 L.T. 7. E 00 L.T. 1. E 01 .

ZR-95 L . T. 4. E 00 L.T. 4. E 00 L .T . 6. E 00 '

RU-103 L . T. 4. 'E 00 L.T. - 4. E 00 L.T. 8. E C0 AU-106 L.T. 3. E 01 L.T. 3. E 01 L.T. 6. E 01 1-131 L.T. 7. 2 00 L.T. 2. E 01 L .T . 3. E 01 CS-134 L . T. 3. E 00 L.T . 3. E 00 L .T . 7. E 00 CS-137 L.T. 4. E 00 L.T. 4. E 00 L.T. 7. E 00 BA-140 L.T. 5. E 00 L.T. 1. E 01 L.T. 1. E 01 CE-141 L . T. 7. E 00 L.T . 8. E 00 L .T . 1. E 01 I CE-144 L . T. 3. E 01 L.T . 2. E 01 L.T. 5. E C1 RA-226 L.T. 7. E 01 L.T. 7. E 01 L.T. 1. E 02 TH-228 L.T. 7. E 00 L.T. 6. E 00 L .T . 1. E 01 TRITIJM ANALYSIS QUARTERLY COMPOSITE (10/14-12/15)

H-3 3.96+-0.47E 03

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O O O VIRGINI A E LE CTRI C T. POWcR COMP ANY ~

NORTH ANNA POWER ST ATI ON EXPOSURE PATHWAY - WATERBORNE WA TIR - SURF ACE

( PCI /LI TER I STATION NUMBER 09 LAKE ANNA, UPS-2.2 MI. 320 DEG. ICONTROLI DAT E COLL ECTED 10/14 11/14 12/15 RAD 10 CHEMICAL ANALYSIS I-131 L.T. 4. E-01 L.T. 5.. E-01 L.T. 3. E- 01 GAMMA SPECTRUM ANALYSIS BE-7 L.T. 4. E 01 L.T. 4. E 01 L.T. 3. E 01 K-40 L.T. 5. E 01 L.T. 6. E 01 L.T. 5. E 01 MN-54 L . T. 4. E 00 L.T . 3. E 00 L .T . 3. E 00 CO-58 L . T. 4. E 00 L.T . 4. E 00 L.T. 3. E C0 FE-59 L.T. 8. E 00 L.T. 8. E 00 L.T. 8. E 00 CD-60 L.T. 4. E 00 L.T. 3. E 00 L .T . 4. E 00 ZN-65 L . T. 8. E 00 L.T . T. E 00 L.T. 7. E 00 ZR-95 L.T. 4. E 00 L.T. 4. E 00 L.T. 4. E CO.

RU-103 L.T. 4. E 00 L.T. 5. E 00 L .T . 4. E 00 RU-106 L . T. 4. E 01 L.T . 3. E 01 L .T . 3. E 01 1-131 L.T. 1. E 01 L.T. 2. E 01 L.T. 1. E 01 CS-134 L.T. 4. E 00 L.T. 4. E 00 L.T. 4. E 00 CS-137 L . T. 4. E 00 L.T . 4. E 00 L .T . 4. E 00 BA-140 L . T. 6. E 00 L.T . 1. E 01 L.T. 6. E CO CE-141 L . T. 8. E 00 .L.T. 1. E 01 L.T. 9. E 00 CE-144 L . T. 3. E 01 L.T. 3. E 01 L .T . 3. E 01 RA-226 L . T. 9. E 01 L.T . 8. E 01 L .T . 8. E 01 T H-22 8 L.T. 8. E 00 L.T. 8. E 00 L.T. 7. E 00 TRITIUM ANALYSIS OUARTERLY COMPOSITE (10/14-12/15)

H-3 2. 90+-0. 42 E 03

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VIRGINI A E LECTRI C & POWER CCMPANy STATE OF VIRGINIA DEPARTMEMT.

NORTH ANNA POWER ST ATICN OF HEALTH /5PLIT VEPCO.

E XPOSURE PATHWAY - WAT ERBORNE WATE R - SURF ACE (PCI/ LITER)

DATE COLL ECTED 10/01-10/31 10/01-10/31 11/01-11/30 11/01-11/30

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R ADI0 CHEM IC AL AN ALYSI S GR-B 4. 8 +-1. 0 E 00 2. 9 +-0.9 E 00 4.6 +-0.9 E 00 2. 9 +- 0.8 E 00 GAMMA SPECTRUM ANALYSIS BE-7 L . T. 5. E C1 L. T. 5. E 01 L . T. 5. E 01 L . T. 5. E 01 3 K-40 L . T. 4. E 01 L. T . '4. E 01 7.02 +-3.66 E 01 L.T. 5. E 01 MN-54 L.T. 3. E 00 L. T. 4. E 00 L.T. 3. E 00 L.T. 3. E 00 CO-58 L . T. 4. E CO L. T. 4. E 00 L.T. 4. E 00 L. T. 4. E 00 FE-59 L . T. 1. E 01 L.T. 1. E 01 L . T. 1. E 01 L.T. 1. E 01 CD-60 L.T. 3. E 00 L.T. 4. E 00 L. T. 4. E 00 L.T. 4. E 00 ZN-65 L.T. 7. E CO L. T. 7. E 00 L.T. 8. E 00 L . T. 7. E 00 ZR-95 L . T. 4. E 00 L. T. 5. E 00 L . T. 5. E 00 L . T. 5. E 00 RU-103 L.T. 6. E 00 L.T. 6. E 00 L.T. 7. E 00 L.T. 7. E 00 RU-106 L.T. 3. E 01 L. T. 3. E 01 L . T. 3. E 01 L.T. 3. E 01 1- 131 L.T. 1. E 02 L. T. 1. E 02 L . T. 1. E 02 L . T. 1. E 02 CS-134 L.T. 3. E 00 L. T . 4. E 00 L . T. 4. E 00 L.T. 4. E 00 CS-137 L.T. 4. E 00 L. T. 3. E 00 L.T. 4. E 00 L.T. 4. E 00 BA-140 L . T. 3. E C1 L. T. 3. E 01 L.T. 3. E 01 L . T. 3. E 01 CE-141 L.T. 1. E 01 L.T. 1. E 01 L . T. 1. E 01 L.T. 1. E 01 CE-144 L.T. 3. E 01 L.T. 3. E 01 L . T. 3. E 01 L . T. 3. E 01 RA-226 L.T. 8. E C1 L. T. 8. E 01 L.T. 8. E 01 L . T. 7. E 01 TH-228 L . T. 7. E CO L. T. 7. E 00 L . T. 7. E 00 L . T. 7. E 00 TR1 TIUM ANALYSIS H- 3 2.83+-0.285 03 2. 53 +-0.26 E 03 3. 98 +-0. 4 0E 03 3. 20+-0.3 9E. 03 W-33 DISCHARGE CANAL W-26 208 BRIDGE

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O VIRGINIA ELECTRIC and POWER COMPANY- VIRGINIA STATE DEPARTMENT'0F NORTH ANNA POWER STATION- - HEALTH /5PLIT VEPCO EXPOSURE PATHWAY - WATERBORNE.

WATER - SURFACE (PCI/ LITER)-

STATION NUMBER DATE COLLECTED 12/01-12/31 12/01-12/31 RADI0 CHEMICAL ANALYSIS GR-B 4.6 +-0.9 E 00 3.3 +-0.8 E 00 GAMMA SPECTRUM ANALYSIS BE-7 L.T. 4. E 01 L.T. 3. E 01 K-40 L.T. 5. E 01 .L.T. 6. E 01 MN-54 L.T. 4 E 00 L.T. 4 E 00 CO-58 L.T. 4. E 00 L.T. 4. E 00 FE-9 L.T. 7. E 00 L.T. ~7. E 00 C0-60 L.T. 4 E 00 L.T. 4. E 00 ZN-65 L.T. 9. E 00 L.T. 7. E 00 ZR-95 L.T. 4 .- E 00 L.T. 4. E 00 RU-103 L.T. 4. E 00 L.T. 5. E 00 RU-106 L.T. 3. E 01 L.T. 4 E 01 1-131 , L.T. 7. E 01 L.T. 7. E 01 CS-134 L.T. 5. E 00 L.T. 4. E 00 CS-137 L.T. 5. E 00 L.T. 4 E 00 BA-140 L.T. 1. E 00 L.T. 5. E 01 CE-141 L.T. 6. E 00 L.T. 8. E 00 CE-144 L.T. 3. E 01 L.T. 3. E 01 RA-226 L.T. 1. E 02 L.T. 9. E 01 TH-228 L.T. 8. E 00 L.T. 8. E 00 TRITIUM ANALYSIS H-3 3.14+-0.29E 03 2.03+-0.24E 03

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VIR31NI A ELECTRIC E PDWER COMPANY NORTH ANNA POWER. ST ATION EXPOSURE P ATHW AY - WATERBORNE WATE R - RIVER IPC I/ LI T ER I STATION NUMBER - 11 NORTH ANNA R ,00WNS-5.8 MI .128 DEG.

DATE C3Lt.ECTED 12/15 G AMMA SPECTRU1 AN ALYSIS ,

BE-7 L.T. 3. E 01 K-40 L . T. 6. E 01 MM-54 E 00 '

L.T. 4.

CD-58 L.T. 4. E 00 FE-59 L.T. 7. ! 00 CD-60 L . T. 4. E 00 Z1-65 L . T. 7. E 00 ZR-95 L . T. 4. E 00 RJ-103 L . T. 4. E 00 RU-106 L.T. 3. E 01 1-131 'L.T. 1. E 01 CS-134 L . T. 4. E 00 CS-137 L.T. 4. E 00 BA-140 L.T. 9. E 00 CE- 141 L. T. 1. ! 01 CE-144 L. T. 3. E 01 RA-226 L . T. 9. E 01 TH-228 L . T. 8. E 00 TRITIJM ANALYSIS H-3 3.42+-0.44E 03 O

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O O O-VIRGINI A E LECTRIC & POWER COMPA4f NORTH ANNA POWER ST ATI ON EXPOSURE PATHWAY - W ATERBORNE WATER - GROUNO

( PC I/ LI TER 1 STATION NUMBER 01A D AT E COLL ECTED 12/27 G AMMA SPECTR31 ANALYSIS BE-7 L. T. 4. E 31 K-40 L. T. 1. E 02 MN-54 L . T. 4 E 00 CD-58 L.T. 5. E 30 -

FE-59 L.T. 9. E 00 CD-60 L. T. 4. E 00 ZN-65 L. T. 1. E 01 ZR-95 L. T . 6. E 00 RU-103 L. T. 5. E 00 RJ-106 L. T. 4. E 01 1-131 L. T. 1. E 01 CS-134 L. T. 5. E 00 CS- 13T L. T. 5. E 00 84-140 L.T. 6. E 00 CE-141 L.T. 9. E.00 CE-144 L. T. 3. E 01 -

RA-226 L. T. 9. E 01 TH-228 L.T. 1. E 01 TRITIJ1 ANALYSIS H- 3 L. T. 1.1 E 32

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O O O VIRGINI4 ' E LE CTRI C C POWER COMPANY NORTH ANNA PCWER ST ATION EXPOSURE PATHWAY - IhGESTION MI LK IPCI/LI TER 1 ST ATION NUMBER 12

. HOLLADAY D AI RY-8.3 NI .310 DEG.

D ATE COLL ECTED 10/12 11/10 12/13 R ADI0CHEMIC AL ANALYSIS I-131 L.T. 5. E-01 L. T. 3. E-01 L.T. 2. E-01 '

GAMMA SPECTRUM AN ALYSIS BE-7 L . T. 7. E 01 L. T. 4. E 01 L.T. 4. E 01 K-40 1.34+-0.13E 03 1.41+-0.14E 03 1 41+-0.14E 0 3 MM-54 L . T. 6. E 00 L. T. 4. E 00 L.I. 4. E 00 CO-58 L . T. 7. E 00 L. T. 5. E 00 L.T. 5. E 00 FE-59 L.T. 1. E 01 L. T. 1. E 01 L.T. 1. E 01 CD-60 L.T. 7. E 00 L.T. 5. E 00 L.T . 5. E 00 ZN-65 L . T. 1. E 01 L. T. 1. E 01 L.T. 1. E 01 ER-95 L.T. 7. E 00 L. T. 5. E 00 L. T . 5. E 00 RU-103 L.T. 9. E 00 L. T. 5. E 00 L .T . S. E 00 RU-106 L . T. 6. E C1 L.T. 4. E 01 L.T. 4. E 01 I-131 L.T. 5. E 01 L . T. 8. E 00 L.T. 2. E 01 CS- 134 L.T. 6. E 00 L. T. 5. E 00 L.T . 4. E 00 CS-137 L . T. 7. E 00 8. 56 +-4. 43 E 00 L.I. 5. E 00 BA-140 L . T. 2. E 01 L. T. 6. E 00 L.T. 9. E 00 CE-141 L.T. 2. E 01 L. T. 9. E 00 L.T. 1. E 01 CE-144 L.T. 5. 5 01 L.T. 4. E 01 L.I. 4. E 01 RA *L' L . T. 1. E 02 L.T. 1. E 02 L.I. 9. E 01 TH-228 L.T. 1. E 01 L. T. 1. E 01 L.T. 9. E 00 RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (10/12-12/13)

SR-89 L.T. 1. E 00 SR-90 3.5 +-0.6 E 00

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% k VIRGINI A ELECT RIC E POWER COMPANY NORTH ANNA POWER STATION EXPOSURE PATHWAY - IhGESTION MILM I PCI/LI TER I STATION NUMBER 13 FREDERI", KS H ALL-5.6 MI.205 CEG.

DAT E C3LLECTED 10/12 11/10 12/13-12/13 RADI3C HEM IC AL AMALYSIS I- 131 L.T. 5. E-01 L. T. 3., E-01 L.T. 4. E-01 i GAMMA SPECTRUM ANALYSIS B E-7 L.T. 4. E 01 L. T. 7. E 01 L.T. 5. E 01 K-40 1. 4 8 + -0.15 E 0 3 1. 2 6 +- 0.13 E 0 3 1 48+-0.15E 03 MN-54 L. T. 5. E 00 L. T. 7. E 00 L.T. 6. E 00 CO-58 L. T. 5. E 00 L. T. 7. E 00 L.T . 6. E 00 FE-59 L.T. 1. E 01 L. T . 2. E 01 L.T . 1. E 01 C3-60 L. T. 5. E 00 L. T. 8. E 00 L.T. 5. E 00 ZN-65 L. T. 1. E 01 L. T. 2. E 01 L. T . 1. E 01 ZR-95 L.T. 5. E 00 L. T. 8. E 00 L.T . 6. E 00 RU-103 L. T. 6. E 00 L.T. 8. E 00 L.T. 7. E 00 RU-106 L. T. 4. E 01 L. T. 7. E 01 L.T. 5. E 01 1-131 L. T. 3. E 01 L. T. 1. E 01 L.T . 2. E 01 CS-134 L. T. 4. E 00 L. T. 9. E 00 L.T. 6. E 00 CS-137 L. T. 5. E 00 L. T. 9. E 00 L.T. 6. E 00 BA-140 L.T. 1. E 01 L. T. 1. E 01 L.T . 1. E 01 CE-141 L.T. 1. E 01 L. T. 1. E 01 L.T. 1. E 01 CE-144 L. T. 3. E 01 L. T. 5. E 01 L.T. 4. E 01 R A- 226 L.T. 1. E 02 L. T. 2. E 02 L.T . 1. E 02 TH-228 L.T. 9. E 00 L. T. 1. E 31 L.T . 1. E 01 RADI0 CHEMICAL ANALYSIS QUARTERLY COMPOSITE (10/12-12/13)

SR-89 L.T. 1, E 00 SR-90 2.7 +-0.6 E 00

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VI RGI NI 4 ELECTRIC & POWER COMP ANY NOR TH ANNA PCWER STATION EXPOSURE PATHWAY - INGES T I ON N ILK STATION NUMBER 14A DATE C3LLECTED 10/12-12/13 11/10 12/13-12/13 RADI0 CHEMICAL AN ALYSIS SAMPLE (a) NOT C OLLEC TED NOT C OLLECTED NOT C OLLECT ED s

(a) Samples not collected for fourth quarter; farm closed.

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L-8343-486, Vepco,North Anna Power Station,Radiological Environ Monitoring Program for 1983

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