Text

Annual Radiological Environmental Operating Report for 2001
	ML021210532
Person / Time
Site:	Palo Verde
Issue date:	04/18/2002
From:	Bauer S; Arizona Public Service Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	102-04693-SAB/TNW/CJJ
	Download: ML021210532 (66)
	v • d • e

Scott A. BIauer TOl. 623-393-5978 Mail Station 76;6 Palo Vecrde Nuclear l)cpartmcnt I,eadcr, Fax 623-393-5442 P1) Bo\\ 512034

('orcratimng Statiim RClgulatory Afiblirs c-mail: sbaucr a apsc.corm P1h1 i.."

`,rizo 85072-2034 102-04693-SAB/TNW/CJJ April 18, 2002 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station P1-37 Washington, DC 20555-0001

Dear Sirs:

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Units 1, 2, & 3 Docket Nos. STN 50-52815291530 Annual Radiological Environmental Operating Report 2001 In accordance with PVNGS Technical Specification (TS) 5.6.2, enclosed please find the Annual Radiological Environmental Operating Report for 2001.

No commitments are being made to the NRC in this letter. If you have any questions, please contact Thomas N. Weber at (623) 393-5764.

Sincerely, SAB/TNW/CJJ/kg Enclosure cc:

E. W. Merschoff J. N. Donohew J. M. Moorman A. V. Godwin A member of the STARS (strategic Teaming and Resource sharing) Alliance Callaway a Comanche Peak

Diablo Canyon

Palo Verde 9 South Texas Project

wolf Creek

ENCLOSURE Annual Radiological Environmental Operating Report for 2001

NUCLEAR GENERATING STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 2001 Digitally signed by 33699 cn=33699, ou=8960, o=Site, Chemistry Support, c=US Date: 2002.03.29 10:00:34-07'00' Reason: I am the author of this document Louis Drinovsky Prepared by:

Digitally signed by 54251, cn=54251, c=US Date: 2002.03.29 12:06:59'-07'00' Reason: I have reviewed this document Reviewed by.

Digitally signed by: Scott, John A(Z83963)

Date: 03/29/2002 12:46:59 Reason: I am approving this document Approved by: Location: PVNGS

TABLE OF CONTENTS

1. IN T R O D U CTIO N............................................................................................................................

2

2. DESCRIPTION OF THE MONITORING PROGRAM.......................................................

3 2.1.

2001 PVNGS RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM.............................. 3 2.2.

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM CHANGES FOR 2001......................

3 2.3.

REM P D EVIATIONS/A BNORM AL EVENTS SUMM ARY................................................................... 4

3. SAMPLE COLLECTION PROGRAM...................................................................................

11 3.1.

W ATER.......................................................................................................................................

11 3.2.

V EGETATION..............................................................................................................................

11 3.3.

M ILK..........................................................................................................................................

11 3.4.

A IR.............................................................................................................................................

12 3.5.

SLUDGE AND SEDIM ENT..........................................................................................................

12

4.

A N A LY TICA L PR O C ED U R ES.............................................................................................

12 4.1.

A IR PARTICULATE...................................................................................................................... 12

4. 1. 1.

G ross Beta..........................................................................................................................

12 4.1.2.

Gam m a Spectroscopy.........................................................................................................

12 4.2.

A IRBORNERADIOIODINE........................................................................................................

13 4.3.

V EGETATION..............................................................................................................................

13 4.3.1.

G am m a Spectroscopy.........................................................................................................

13 4.4.

SLUDGE/SEDIM ENT..................................................................................................................... 13 4.4.1.

Gam m a Spectroscopy.........................................................................................................

13 4.5.

W ATER.......................................................................................................................................

13 4.5.1.

G am m a Spectroscopy.........................................................................................................

13 4.5.2.

Tritium................................................................................................................................

13 4.5.3.

Gross Beta..........................................................................................................................

14 4.6.

SOIL............................................................................................................................................

14 4.6.1.

Gam m a Spectroscopy.........................................................................................................

14

5. N U C LEA R IN STR U M EN TA TIO N.........................................................................................

14 5.1.

CANBERRA GAM M A SPECTROMETER....................................................................................... 14 5.2.

BECKM AN LIQUID SCINTILLATION SPECTROMETER.................................................................... 14 5.3.

TENNELEC LB5100 Low BACKGROUND COUNTING SYSTEM.................................................. 14

6. ISOTOPIC DETECTION LIMITS AND REPORTING CRITERIA..................................

15 6.1.

LOW ER LIMITS OF D ETECTION................................................................................................. 15 6.2.

D ATA REPORTING CRITERIA..................................................................................................

15 6.3.

LLD AND REPORTING CRITERIA O VERVIEW............................................................................. 16

7. INTERLABORATORY COMPARISON PROGRAM..........................................................

21 7.1.

Q UALITY CONTROL PROGRAM...............................................................................................

21 7.2.

INTERCOM PARISON RESULTS...................................................................................................... 21 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT-2001 ii

TABLE OF CONTENTS

8. DATA INTERPRETATIONS AND CONCLUSIONS..........................................................

24 8.1.

A IR PARTICULATES..................................................................................................................... 24 8.2.

A IRBORNE RADIOIODINE........................................................................................................

25 8.3.

V EGETATION..............................................................................................................................

25 8.4.

D RINKING W ATER...................................................................................................................... 25 8.5.

G ROUNDW ATER.......................................................................................................................... 25 8.6.

SURFACE W ATER........................................................................................................................ 25 8.7.

SLUDGE AND SEDIM ENT.......................................................................................................... 26

8. 7. 1.

W RF Centrifuge waste sludge........................................................................................

26 8.7.2.

Evaporation Ponds #1 and #2 sedim ent........................................................................

26 8.7.3.

Cooling Tower sludge.........................................................................................................

27 8.8.

D ATA TRENDS............................................................................................................................ 27

9. THERMOLUMINESCENT DOSIMETER (TLD) RESULTS AND DATA.......................

47

10.

LA ND U SE CEN SU S.................................................................................................................

53 10.1.

INTRODUCTION........................................................................................................................ 53 10.2.

CENSUS RESULTS................................................................................................................. 53

11.

SU M M A R Y A N D C O N CLU SIO N S....................................................................................

55

12.

R EFER EN C ES...........................................................................................................................

59 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 iii

LIST OF TABLES TABLE 2.1 SAMPLE COLLECTION LOCATIONS...........................................................................

5 TABLE 2.2 SAMPLE COLLECTION SCHEDULE..........................................................................

6 TABLE 2.3

SUMMARY

OF REMP DEVIATIONS/ABNORMAL EVENTS...................................

7 TABLE 6.1 ODCM REQUIRED LOWER LIMITS OF DETECTION (A PRIORI)......................... 18 TABLE 6.2 ODCM REQUIRED REPORTING LEVELS...............................................................

19 TABLE 6.3 TYPICAL MDA VALUES..............................................................................................

20 TABLE 7.1 INTERLABORATORY COMPARISON RESULTS.................................................... 22 TABLE 8.1 PARTICULATE GROSS BETA IN AIR 1ST - 2ND QUARTER................................

28 TABLE 8.2 PARTICULATE GROSS BETA IN AIR 3RD - 4TH QUARTER...............................

29 TABLE 8.3 GAMMA IN AIR FILTER COMPOSITES....................................................................

30 TABLE 8.4 RADIOIODINE IN AIR 1ST - 2ND QUARTER...........................................................

31 TABLE 8.5 RADIOIODINE IN AIR 3RD - 4TH QUARTER.........................................................

32 T A B LE 8.6 V E G E T A T IO N...................................................................................................................

33 TA BLE 8.7 D R IN KIN G W A TER..........................................................................................................

34 TA BLE 8.8 G R O U N D W A TER.............................................................................................................

36 TA B LE 8.9 SU RFA C E W A TER...........................................................................................................

37 TABLE 8.10 SLUDGE/SEDIMENT..................................................................................................

40 TABLE 9.1 TLD SITE LOCATIONS................................................................................................

48 TABLE 9.2 2001 ENVIRONMENTAL TLD RESULTS.................................................................

50 TABLE 10.1 2001 LAND USE CENSUS..........................................................................................

54 TABLE 11.1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL S U M M A R Y............................................................................................................................................

5 6 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 iv

LIST OF FIGURES FIGURE 2.1 PVNGS REMP SAMPLE SITES - MAP (0-10 MILES)................................................... 9 FIGURE 2.2 PVNGS REMP SAMPLE SITES - MAP (0-35 MILES).................................................. 10 FIGURE 8.1 HISTORICAL GROSS BETA IN AIR (WEEKLY SYSTEM AVERAGES)............ 42 FIGURE 8.2 HISTORICAL GROSS BETA IN AIR (ANNUAL SITE TO SITE COMPARISONS)

C O M PA R E D T O PR E -O P.....................................................................................................................

43 FIGURE 8.3 GROSS BETA IN DRINKING WATER....................................................................

44 FIGURE 8.4 SOIL Cs-137 COMPARED TO ONSITE SEDIMENT BASIN #2............................. 45 FIGURE 8.5 EVAPORATION POND TRITIUM ACTIVITY.......................................................

46 FIGURE 9.1 NETWORK ENVIRONMENTAL TLD EXPOSURE RATES..................................

51 FIGURE 9.2 ENVIRONMENTAL TLD COMPARISON - PRE-OPERATIONAL VS 2001......

52 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 v

ABSTRACT The Radiological Environmental Monitoring Program (REMP) is an ongoing program conducted by Arizona Public Service Company (APS) for the Palo Verde Nuclear Generating Station (PVNGS).

Various types of environmental samples are collected near PVNGS and analyzed for radionuclide concentrations.

During 2001, the following categories of samples were collected by APS:

"* Broad leaf vegetation

"* Groundwater

"* Drinking water

"* Surface water

"* Airborne particulate and radioiodine

"* Sludge and sediment Thermoluminescent dosimeters (TLDs) were used to measure environmental gamma radiation. The Environmental TLD program is also conducted by APS.

APS reviews analysis results for trends and anomalies for inclusion in this report.

The Arizona Radiation Regulatory Agency (ARRA) performs radiochemistry analyses on various duplicate samples provided to them by APS. Samples analyzed by ARRA include onsite samples from the Reservoir, two (2) Evaporation Ponds, and two (2) deep wells. Offsite samples analyzed by ARRA includes two (2) local resident wells. ARRA also performs air sampling at seven (7) offsite locations identical to APS and maintains fifty (50) environmental TLD monitoring locations, eighteen (18) of which are duplicates of APS locations.

Assessment of pre-operational and operational data revealed no changes to environmental radiation levels. There were no radiological impacts on the environment due to PVNGS operations in 2001.

(NOTE: Reference to APS throughout this report refers to PVNGS personnel)

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 1

OPERATIONAL RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

1.

Introduction This report presents the results of the operational radiological environmental monitoring program conducted by Arizona Public Service Company (APS).

The Radiological Environmental Monitoring Program (REMP) was established for the Palo Verde Nuclear Generating Station (PVNGS) by APS in 1979. The REMP is performed in accordance with the federal requirements to provide a complete environmental monitoring program for nuclear reactors, and with concern for maintaining the quality of the local environment. The program complies with the requirements of 10 CFR50, Appendix I, PVNGS Technical Specifications, and with the guidance provided by the US Nuclear Regulatory Commission (USNRC) in their Radiological Assessment Branch Technical Position, Revision 1, November 1979.

This report contains the measurements and findings for 2001. All references are specifically identified in Section 12.

The objectives of the REMP are as follows: 1) to determine baseline radiation levels in the environs prior to plant operation and to compare the findings with measurements obtained during reactor operations; 2) to monitor potential critical pathways of radio-effluent to man; and 3) to determine radiological impacts on the environment caused by the operation of PVNGS.

Results from the REMP help to evaluate sources of elevated levels of radioactivity in the environment, (e.g., atmospheric nuclear detonations or abnormal plant releases).

Results of the PVNGS pre-operational environmental monitoring program are presented in Reference 1.

The initial criticality of Unit 1 occurred May 25, 1985. Initial criticality for Units 2 and 3 were April 18, 1986, and October 25, 1987, respectively. PVNGS operational findings (historical) are presented in Reference 2.

PVNGS ANNUA' RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 2

2.

Description of the Monitoring Program The pre-operational radiological environmental monitoring program, which began in 1979, was performed by APS and vendor organizations. APS and vendors continued the program into the operational phase.

2.1.

2001 PVNGS Radiological Environmental Monitoring Program The assessment program consists of routine measurements of background gamma radiation and of radionuclide concentrations in media such as air, groundwater, drinking water, surface water, vegetation, sludge, and sediment.

Samples were collected by APS at the monitoring sites shown in Figures 2.1 and 2.2.

The specific sample types, sampling locations, and sampling frequencies, as set forth in the PVNGS Offsite Dose Calculation Manual (ODCM), Reference 4, are presented in Tables 2.1, 2.2 and 9.1. Additional onsite sampling (outside the scope of the ODCM) is performed to supplement the REMP. All results are included in this report. Sample analyses were performed by APS at the PVNGS Central Chemistry Laboratory.

Background gamma radiation measurements were performed by APS using TLDs at forty-eight (48) locations near PVNGS.

In addition to the monitoring of environmental media, a land use census is performed annually to identify the nearest milk animals, residents, gardens, and/or changes thereto, near PVNGS. This information is used to evaluate the potential dose to members of the public for those exposure pathways that are indicated.

2.2.

Radiological Environmental Monitoring Program Changes for 2001 Two (2) vegetation sample locations were changed in 2001. Refer to Table 2.1 for a description of all current sample locations, including changes in vegetation sample locations.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPOP'

- 2001 3

2.3.

REMP Deviations/Abnormal Events Summary During calendar year 2001, there were eleven (11) deviations/abnormal events with regard to ODCM and/or implementing procedure requirements. Refer to Table 2.3 for more detail and any corrective actions taken.

"* Air sample (gross beta and radioiodine) from Site #6A, Jan. 2-8, was invalid.

"* Air sample (gross beta and radioiodine) from Site #35, March 12-19, was invalid.

"* Air sample (gross beta and radioiodine) from Site #6A, Sept. 4-10, was invalid.

"* Air sample (gross beta and radioiodine) from Site #21, Oct. 8-15, was invalid

"* Air sample (gross beta and radioiodine) from Site #17A, Nov. 19-26, was invalid.

"* Sedimentation Basin #2 samples indicated abnormally high levels of tritium on 1-16-01.

"* Sedimentation Basin #2 samples indicated abnormally high levels of 1-131 on 4-2-01.

"* Due to a circulating water blowdown line leak at Unit 1, circulating water was pumped to the Reservoir to facilitate line repair. This created the potential to exceed Reservoir action levels for 1-131.

"* Mass flowmeter #EG-4219, used to verify flow rates for REMP air samples, was out of tolerance for the period 7-9-01 through 1-2-02.

"* Supplemental well water sample from Site #55 was unavailable during the week of April 30.

"* TLD #3 was missing in the 2nd Quarter.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERA I ING REPORT - 2001 4

Table 2.1 SAMPLE COLLECTION LOCATIONS SAMIPLE SITE, #

LOCATION 4

6A*

7A 14A 15 17A 21 i29 35 40 46 47 LOCATION DESCRIPTION SAMPLE TYPE air air air air air air air air air air drinking water vegetation (b) drinking water drinking water vegetation drinking water (supplemental) groundwater groundwater surface water surface water vegetation (b) surface water vegetation (b),

supplemental NOTES:

Designates a control site (a) Distances and direction are from the center-line of Unit 2 containment and rounded to the nearest mile (b) Denotes a change in location Air sample sites designated with the letter 'A' are sites that have the same site number as a TLD location, but are not in the same location (e.g. site #6 TLD location is different from site #6A air sample location; site #4 TLD location is the same as site #4 air sample location)

PVNGS ANNUAL RADIOLOGICAL ENVIRONMI-NTAL OPERATING REPORT - 2001 5

E16 SSE13 SE8 NNE2 E3 S3 Wi N 2 NW9 NNE2 SW1 N 2 ESE4 sw3 ONS1TE ONSlTE ONSlTE ONSITE oNSITE E35 ONSITE N NE2`

APS Office Old US 80 Arlington School 371st Ave. and Buckeye-Salome Rd.

NE Site Boundary 351st Ave.

S Site Boundary W Site Boundary Tonopah Transmission Rd McArthur Residence Steagall Residence (changed to Branch Residence, same distance and sector, as of August, 2001)

Berryman residence Chowanec Residence Hallman Residence Gavette Residence Well 27ddc Well 34abb Evaporation Pond #1 Reservoir Rousseau Farming Co. (changed to Duncan Family Farms, ENE26, as of August, 2001)

Evaporation Pond #2 This location was changed to a 'required' sample as of August, 2001 (see site #47).

48 49 52

-55 57 58 59 60 62*

63 64

Table 2.2 SAMPLE COLLECTION SCHEDULE AIR PARTICULATE W

AIRBORNE RADIOIODINE W

SAMPLE SITE #

4 6A 7A 14A 15 17A 21 29 35 40 46 47 48 49 52 55 57 58 59 60 62 63 64 VEGETATION Wv W

w w

w W

W W

w w

W W

W = WEEKLY MIAA = MONTHLY AS AVAILABLE Q = QUARTERLY PVNGS ANNUAl w.A DIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 6

WATER SURFACE

ýVWATER M/AA M/AA M/AA M/AA (DELETED AS OF 8/2001) w W

xv xv Q

Q W

W W

i i

TABLE 2.3

SUMMARY

OF REMP DEVIATIONS/ABNORMAL EVENTS Deviation/Abnormal Event

1. Air sample (gross beta and radioiodine) from Site

6A, Jan 2-8, was invalid due to sample pump seizing.

2. Air sample (gross beta and radiolodine) from Site #35, March 12-19, was invalid due to sample pump seizing.

3. Air sample (gross beta and radioiodine) Site

6A, Sept 4-10, was invalid due to malfunction of the elapsed time meter (ETM).

4. Air sample (gross beta and radioiodine) Site

21, Oct 8-15, was invalid due to loss of power sometime during the sample period.

5. Air sample (gross beta and radioiodine) Site

17A, November 19-26, was invalid due to the sample head breaking off.

6. Sedimentation Basin#2 samples indicated abnormally high levels of tritium on 1-16-01.

7. Sedimentation Basin#2 samples indicated abnormally high levels of 1-131 on 4-2-01.

Actions taken

1. The pump was replaced and samples were valid the following week. No further actions necessary.

2. The pump was replaced and samples were valid the following week. No further actions necessary.

3. The ETM was replaced and samples were valid the following week. No further actions necessary.

4. There was no power to the sample station upon arrival. This outage was attributed to construction in the area. Power was restored and the samples were valid the following week. No further action necessary.

5. The tubing connecting the sample head to the pump was replaced and samples were valid the following week. No further actions necessary.

6. The elevated tritium concentration (7064 pCi/liter) was the result of Boric Acid Concentrator operation during periods of rainfall (see CRDR # 2355136).

7. The elevated 1-131 concentration (104 pCi/liter) was the result of spillover of the Unit 1 cooling towers. The water entered the site drainage ditches and was transported to Sedimentation Basin #2. 1-131 concentrations were consistent with circulating water 1-131 concentrations. This event was determined to be reportable to the State of Arizona as a violation of Palo Verde's Groundwater Quality Protection Permit. The Corrective Action Program (CRDR #

2375410) addressed corrective actions to prevent recurrence.

(continued on next page)

PVN<ý S ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 7

TABLE 2.3

SUMMARY

OF REMP DEVIATIONS/ABNORMAL EVENTS Deviation/Abnormal Event (continued)

8. Due to a circulating water blowdown line leak at Unit 1, circulating water was pumped to the Reservoir to facilitate line repair. This created the potential to exceed Reservoir action levels for 1-131.

9. Mass flowmeter #EG-4219, used to verify flow rates for REMP air samples, was out of tolerance for the period 7-9-01 through 1-2-02.

10. Supplemental well water sample from Site

55 (resident well) was unavailable the week of April 30.

11. TLD #3 was missing in the 2nd Quarter and the field holder had been vandalized. This TLD site is near an elementary school.

Actions taken (continued)

8. Procedure action levels were not exceeded. No further actions were necessary.

9. An evaluation was performed to determine the impact on REMP air sample data for this period.

All data reported were in the conservative direction as evaluated by CRDR # 2453917. One additional corrective action is to replace the mass flowmeter.

10. The well was returned to service the following week. No further actions are required.

11. The TLDs were replaced and the holders were not vandalized in the subsequent two quarters.

TLD results for the three quarters monitored were in the range of historical data. No further actions are required.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 8

FIGURE 2.1 REMP SAMPLE SITES (0-10 MILES)

Graphic Scale in Miles 0

I 2

3 4

5 aeRo NNE

-+--l-i--

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KEY TO MAP Palo Verde Nuclear Generating Station RADIOLOGICAL ENVIRONMENTAL MONITORING Railroad Palo Verde Nuclear PROGRAM SAMPLE SITES 4

r o:

Generating Station Airstripi'Airport B u dr

Boundary Schools Located T

Thermoluaminescent

(

Sarple Sites 0-35 Miles Near Sample Sites Dosimeters (TLD)

V Vegetation

Municipal Buildings A Air Sample

"(JA m0

> em

'z C3 z

z C

o I

0 z

01 0

z 01 z

-4 j

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1 11 1

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3.

Sample Collection Program All samples were collected by APS personnel using PVNGS procedures.

3.1.

Water Weekly samples were collected from the Reservoir, Evaporation Pond #1, Evaporation Pond #2, and four (4) residence wells. Samples were collected in one-gallon cubitainers and 500 ml glass bottles. One liter of each weekly one-gallon sample was added to a monthly composite, which is preserved with nitric acid (HNO 3 ). The composite samples were then analyzed for gamma-emitters. Residence wells were also analyzed for gross beta activity. Weekly grab samples in glass bottles were composited quarterly and analyzed for tritium.

Quarterly grab samples were collected from onsite wells 34abb and 27ddc. Samples were collected in one-gallon cubitainers and 500 ml glass bottles. Samples were analyzed for gamma-emitters and tritium.

Treated sewage effluent from the City of Phoenix was sampled as a weekly composite at the onsite Water Reclamation Facility (WRF), and analyzed for gamma-emitters. A monthly composite was analyzed for tritium.

3.2.

Vegetation Vegetation samples were collected by APS using PVNGS procedures.

Vegetation samples were scheduled to be collected monthly, as available, and were analyzed for gamma-emitters.

3.3.

Milk Milk sampling was performed from 1979-1995 and discontinued in 1995. This was justified since there were no sample locations identified within 5 miles of PVNGS. The control location sample is also not taken since there would be no valid 'indicator' locations with which to compare results. If milk animals are located within 5 miles during the annual land use census, an evaluation is initiated to consider re-establishing a milk sample program. Refer to Section 10 for specific information regarding milk animals located during the performance of the 2001 Land Use Census.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 11

3.4.

Air Air samples were collected by APS using PVNGS procedures.

Air particulate filters and charcoal cartridges were collected at ten (10) sites on a weekly basis. Particulate filters were analyzed for gross beta. Charcoal cartridges were analyzed for 1-131. Particulate filters were composited quarterly, by location, and analyzed for gamma-emitters.

3.5.

Sludge and Sediment Sludge and sediment samples were collected by APS using PVNGS procedures.

Sludge samples were obtained weekly from the WRF waste centrifuge (whenever the plant was operational) and analyzed for gamma-emitters. Samples were collected using 1000 ml plastic bottles.

Cooling tower sludge from Unit 3 was disposed of in the WRF Landfill in 2001.

Samples were analyzed for gamma-emitters.

Bottom sediment/sludge samples were obtained from Evaporation Pond #1 and #2 and analyzed for gamma-emitters. Samples were collected from a boat at various locations using a bucket to preserve the integrity of the pond liners.

4.

Analytical Procedures The procedures described in this report are those used by APS to routinely analyze samples.

4.1.

Air Particulate 4.1.1.

Gross Beta A glass fiber filter sample is placed in a stainless steel planchet and counted for gross beta activity utilizing a low-background gas flow, proportional counter.

4.1.2.

Gamma Spectroscopy The glass fiber filters are placed in a standard geometry container and counted on a multichannel analyzer equipped with a HPGe detector. The resulting spectrum is analyzed by computer and specific radionuclides, if present, are identified and quantified.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPnF{T - 2001 12

4.2.

Airborne Radioiodine The charcoal cartridge is counted on a multichannel analyzer equipped with an HPGe detector. The resulting spectrum is analyzed by computer and 1-131, if present, is identified and quantified.

4.3.

Vegetation 4.3.1.

Gamma Spectroscopy The sample is pureed in a food processor, placed in a one liter plastic marinelli beaker, weighed, and counted on a multichannel analyzer equipped with a HPGe detector. The resulting spectrum is analyzed by computer and specific radionuclides, if present, are identified and quantified.

4.4.

Sludge/Sediment 4.4.1.

Gamma Spectroscopy The wetldry sample is placed in a one-liter plastic marinelli beaker, weighed, and counted on a multichannel analyzer equipped with a HPGe detector. The resulting spectrum is analyzed by computer and specific radionuclides, if present, are identified and quantified.

4.5.

Water 4.5.1.

Gamma Spectroscopy The sample is placed in a one-liter plastic marinelli beaker, weighed, and counted on a multichannel analyzer equipped with a HPGe detector. The resulting spectrum is analyzed by computer and specific radionuclides if present, are identified and quantified.

4.5.2.

Tritium The sample is evaluated to determine the appropriate method of preparation prior to counting. If the sample contains suspended solids or is turbid, it may be filtered, distilled, and/or de-ionized, as appropriate. Eight (8) milliliters of sample are mixed with fifteen (15) milliliters of liquid scintillation cocktail.

The mixture is dark adapted and counted for tritium activity using a liquid scintillation counting system.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERA. FING REPORT - 2001 13

4.5.3.

Gross Beta A 200-250 milliliter sample is placed in a beaker. Five (5) milliliters of concentrated nitric (HNO 3) acid is added and the sample is evaporated down to about twenty (20) milliliters. The remaining sample is quantitatively transferred to a stainless steel planchet. The sample is heated to dryness and counted for gross beta in a gas flow, proportional counter.

4.6.

Soil 4.6.1.

Gamma Spectroscopy The samples are sieved, placed in a one-liter plastic marinelli beaker, and weighed. The samples are then counted on a multichannel analyzer equipped with a HPGe detector. The resulting spectrum is analyzed by computer and specific radionuclides if present, are identified and quantified.

5.

Nuclear Instrumentation 5.1.

Canberra Gamma Spectrometer The Gamma Spectrometer consists of a Canberra System equipped with two intrinsic detectors having resolutions of 1.73 keV and 1.88 keV (as determined by full width half max with an energy of 0.5 keV per channel) and respective efficiencies of 21.5%

and 38.4% (as determined by the manufacturer with Co-60). The Canberra System is used for all gamma counting. The system uses Canberra developed software (automatic radionuclide analysis) to search and identify, as well as quantify, the peaks of interest.

5.2.

Beckman Liquid Scintillation Spectrometer A Beckman LS-6500 Liquid Scintillation Counter is used for tritium determinations.

The system background averages approximately 15-17 cpm with a counting efficiency of about 40% using a quenched standard.

5.3.

Tennelec LB5100 Low Background Counting System The LB5 100 is a low background, gas flow proportional counter. The system contains an automatic sample changer capable of counting 50 samples in succession. Average beta background count rate is about 1-2 cpm with a beta efficiency of about 30% (Cs 137).

PVNGS ANNUAL RADIOLOGICAL ENVIRONMk ýNNTAL OPERATING REPORT - 2001 14

6.

Isotopic Detection Limits and Reporting Criteria 6.1.

Lower Limits of Detection The lower limits of detection (LLD) and the method for calculation are specified in the PVNGS ODCM, Reference 4. The ODCM required a priori LLDs are presented in Table 6.1. For reference, a priori LLDs are indicated at the top of data tables for samples having required LLD values.

6.2.

Data Reporting Criteria All results that are greater than the Minimum Detectable Activity (MDA) (a posteriori LLD) are reported as positive activity with its associated 2(5 counting error. All results that are less than the MDA are reported as less than values at the associated MDA. For example, if the MDA is 12 pCi/liter, the value is reported as <12.

Typical MDA values are presented in Table 6.3.

Occasionally the PVNGS ODCM a priori LLDs may not be achieved as a result of:

"* Background fluctuations

"* Unavoidably small sample sizes

"* The presence of interfering radionuclides

"* Self absorption corrections

"* Decay corrections for short half-life radionuclides

"* Other uncontrollable circumstances In these instances, the contributing factors will be noted in the table where the data are presented. A summary of discrepancies/events is presented in Table 2.3 and includes a description of any sample results that did not meet a priori LLD requirements.

PVNGS ANNUAL RADIOLOGICA' LNVIRONMENTAL OPERATING REPORT - 2001 15

6.3.

LLD and Reporting Criteria Overview Making a reasonable estimate of the limits of detection for a counting procedure or a radiochemical method is usually complicated by the presence of significant background. It must be considered that the background or blank is not a fixed value but that a series of replicates would be normally distributed. The desired net activity is thus the difference between the gross and background activity distributions.

The interpretation of this difference becomes a problem if the two distributions intersect as indicated in the diagram.

BACKGROUND GROSS

/

\\

If a sufficient number of replicate analyses are run, it is to be expected that the results would fall in a normal Gaussian Distribution. Standard statistics allow an estimate of the probability of any particular deviation from the mean value. It is common practice to report the mean +/- one or two standard deviations as the result. In routine analysis, such replication is not carried out, and it is not possible to report a Gaussian standard deviation. With counting procedures, however, it is possible to estimate a Poisson standard deviation directly from the count. Data is commonly reported as the measured value +/-+ one or two Poisson standard deviations. The reported values are then considered to give some indication of the range in which the true value might be expected to occur.

The simplest possible case to consider would be one where the background is negligible and the sample activity is zero. It is sometimes not realized that if a series of counts is taken on such a system, half of the net values should be less than zero.

Negative counts are not possible, of course. However, when there is an appreciable background, the entire scale is raised. The resulting situation: half of the sample counts on a zero activity sample would be less than background. The negative net counts occur frequently in low-level measurements, causing considerable concern. Actually, such results are to be expected.

PVNGS ANNUAL P A DIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 16

A LLD is the smallest amount of sample activity that will yield a net count for which there is confidence at a predetermined level that activity is present. LLDs are calculated values for individual radionuclides based on a number of different factors including sample size, counting efficiency and background count rate of the instrument, the background and sample counting time, the decay time, and the chemical recovery of the analytical procedures. A minimum detectable activity value (MDA) is the smallest amount of activity that can be detected in an actual sample and uses the values obtained from the instrument and outcome of the analytical process.

Therefore, the MDA values may differ from the calculated LLD values if the sample size and chemical recovery, decay values, or the instrument efficiency, background, or count time differed from those used in the LLD calculation.

The factors governing the calculation of the LLD and MDA values are discussed below:

1. Sample Size

2. Counting Efficiency The fundamental quantity in the measurement of a radioactive substance is the number of disintegrations per unit time. As with most physical measurements in analytical chemistry, it is seldom possible to make an absolute measurement of the disintegration rate, but rather it is necessary to compare the sample with one or more standards. The standards determine the counter efficiency that may then be used to convert sample counts per minute (cpm) to disintegrations per minute (dpm).

3. Background Count Rate Any counter will show a certain counting rate without a sample in position. This background counting rate comes from several sources: 1) natural environmental radiation from the surroundings, 2) cosmic radiation, and 3) the natural radioactivity in the counter material itself. The background counting rate will depend on the amounts of these types of radiation and the sensitivity of the counter to the radiation.

4. Background and Sample Counting Time The amount of time devoted to the counting of the background depends on the level of activity being measured. In general, with low-level samples, this time should be about equal to that devoted to counting a sample.

5. Time Interval between Sample Collection and Counting Decay measurements are useful in identifying certain short-lived isotopes. The disintegration constant is one of the basic characteristics of a specific radionuclide and is readily determined, if the half-life is sufficiently short. In order to ensure the required LLDs are achieved, appropriate values are used in decay correction to allow for transit time and sample processing.

PV>.- ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 17

Table 6.1 ODCM REQUIRED LOWER LIMITS OF DETECTION (a priori)

AIRBORNE ANALYSIS/

WATER PARTICULATE or MILK VEGETATION NUCLIDE (pCi/liter)

GAS (pCi/m 3 )

(pCi/liter)

(pCi/kg, wet) gross beta 4

0.01 tritium 2000*

Mn-54 15 Fe-59 30 Co-58, 60 15 Zn-65 30 Zr-95 30 Nb-95 15 1-131 1**

0.07 1

60 Cs-134 15 0.05 15 60 Cs-137 18 0.06 18 80 Ba-140 60 60 La-140 15 15 NOTES:

If no drinking water pathway exists, a value of 3000 pCi/liter may be used.

- If no drinking water pathway exists, a value of 15 pCi/liter may be used.

This list does not mean that only these nuclides are to be detected and reported. Other peaks that are measurable and identifiable, together with the above nuclides, shall also be identified and reported.

Milk sampling was not required as noted in the land use census (see section 10).

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 i8

Table 6.2 ODCM REQUIRED REPORTING LEVELS AIRBORNE ANALYSIS/

WATER PARTICULATE MILK VEGETATION NUCLIDE (pCi/liter) or GAS (pCi/m3 )

(pCi/liter)

(pCi/kg, wet) tritium 20,000*

Mn-54 1,000 Fe-59 400 Co-58 1,000 Co-60 300 Zn-65 300 Zr/Nb-95 400 1-131 2**

0.9 3

100 Cs-134 30 10 60 1,000 Cs-137 50 20 70 2,000 Ba/La-140 200 300 NOTES:

For drinking water samples. This is a 40CFRI41 value. If no drinking water pathway exists, a value of 30,000 pCi/liter may be used.

If no drinking water pathway exists, a reporting level of 20 pCi/liter may be used.

Milk sampling was not required as noted in the land use census (see section 10).

The values in this table are (calendar) quarterly average values, as stated in the ODCM.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERAT.NG REPORT - 2001 19

Table 6.3 TYPICAL MDA VALUES ANALYSIS/

AIRBORNE PARTICULATE or VEGETATION NUCLIDE WATER (pCi/liter)

GAS (pCi/m3)

(pCi/kg, wet) gross beta 3

0.007 tritium 300 Mn-54 9

Fe-59 20 Co-58 9

Co-60 11 Zn-65 22 Zr-95 17 Nb-95 10 1-131 10a 0.028 20 Cs-134 11 0.02 b 30 Cs-I37 10 0.02 b 22 Ba-140 30 La-140 10 NOTES:

a - low level 1-131 is not required since there is no drinking water pathway b - based on 433 m3 volume Milk sampling was not required as noted in the land use census (see section 10).

PVNGS ANNUAL RADIOLOGI 4,.L ENVIRONMENTAL OPERATING REPORT - 2001 20

7.

Interlaboratory Comparison Program 7.1.

Quality Control Program APS maintains an extensive QA/QC Program that provides certainty that samples are collected, handled, tracked, and analyzed to specified requirements. This program includes appropriate elements of USNRC Regulatory Guide 4.15, Quality Assurance for Radiological Monitoring Programs (Normal Operations) - Effluent Streams and the Environment, Rev. 1. Included in the program are procedures for sample collection, preparation and tracking, sample analysis, equipment calibration and checks, and ongoing participation in an interlaboratory comparison program. Duplicate/replicate samples are analyzed routinely to verify analytical precision and sample methodology.

Comprehensive data reviews are performed including trending of data where appropriate.

During 2001, APS analyzed the following sample types under the interlaboratory comparison program;

Beta/Gamma/ in Air Filter 1-131 in Air

Beta in Water

Gamma in Water

Tritium in Water 7.2.

Intercomparison Results APS participates in a crosscheck program using vendor supplied blind radionuclide samples. Results for the interlaboratory comparison program are presented in Table 7. 1.

PW /\\5S ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 21

TABLE 7.1 INTERLABORATORY COMPARISON RESULTS 2`1 Quarter Sample Analysis Known PVNGS 1 sigma Resolution Type Type Units Nuclide Value Value Error Ratio Mixed Gamma pCi/liter Ce-141 234 229 14.0 16 0.98 ACCEPT Cr-51 322 352 45.5 8

1.09 ACCEPT Cs-134 193 166 11.0 15 0.86 ACCEPT Cs-137 174 181 11.5 16 1.04 ACCEPT Co-58 139 141 9.5 15 1.01 ACCEPT Mn-54 216 228 13.5 17 1.05 ACCEPT Water Fe-59 126 130 16.5 8

1.03 ACCEPT Zn-65 261 278 21.5 13 1.07 ACCEPT Co-60 194 217 13.0 17 1.12 ACCEPT 1-131 74 83 14.0 6

1.12 ACCEPT Tritium pCi/liter H-3 7494 6085 121.5 50 0.81 ACCEPT Gross Beta pCi/liter 123 151 3.5 43 1.23 ACCEPT Iodine pCi/cartridge 1-131 81 84 14.5 6

1.04 ACCEPT Gross Beta pCi/filter 85 102 1.5 68 1.20 ACCEPT Air Mixed Gamma pCi/filter Cr-51 176 204 43.5 5

1.16 ACCEPT Mn-54 118 137 7.0 20 1.16 ACCEPT Fe-59 69 110 11.5 10 1.59 ACCEPT Co-58 76 81 5.5 15 1.07 ACCEPT Co-60 106 116 7.0 17 1.09 ACCEPT Zn-65 142 173 11.0 16 1.22 ACCEPT Cs-134 105 96 6.0 16 0.91 ACCEPT Cs-137 95 109 6.5 17 1.15 ACCEPT Ce-141 128 143 9.5 15 1.12 ACCEPT

calculated from PVNGS value/i sigma error value NRC Acceptance Criteria (a)

Resolution Ratio 4-7 0.5-2.0 8-15 0.6-1.66 16-50 0.75-1.33 51-200 0.80-1.25

>200 0.85-1.18 (a) From NRC Inspection Manual, procedure #84750, "Radioactive Waste Systems; Water Chemistry. Confirmatory Measurements PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 22

TABLE 7.1 INTERLABORATORY COMPARISON RESULTS 3rd Quarter Sample Analysis Known PVNGS 1 sigma Resolution AR Type Type Units Value Value Error R

ACCEPT/REJECT Mixed Gamma pCi/liter Ce-141 88 99 6

17 1.13 ACCEPT Cr-51 265 262 26 10 0.99 ACCEPT Cs-134 116 107 6

18 0.92 ACCEPT Cs-137 232 234 12 20 1.01 ACCEPT Co-58 128 133 7

19 1.04 ACCEPT Mn-54 149 157 8

20 1.05 ACCEPT Water Fe-59 62 81 8

10 1.31 ACCEPT Zn-65 184 210 12 18 1.14 ACCEPT Co-60 193 201 10 20 1.04 ACCEPT 1-131 60 69 9

8 1.15 ACCEPT Tritium pCi/liter H-3 4582 3961 220 18 0.86 ACCEPT Gross Beta pCi/liter 232 275 6

46 1.19 ACCEPT Iodine pCi/cartridge 1-131 66 83 5

17 1.26 ACCEPT Gross Beta PCi/filter 89 102 1

102 1.15 ACCEPT Air Mixed Gamma pCi/filter Cr-51 174 167 21 8

0.96 ACCEPT Mn-54 97 109 5

22 1.12 ACCEPT Fe-59 41 53 6

9 1.29 ACCEPT Co-58 84 88 5

18 1.05 ACCEPT Co-60 126 129 7

18 1.02 ACCEPT Zn-65 121 134 9

15 1.11 ACCEPT Cs-134 76 69 4

17 0.91 ACCEPT Cs-137 152 155 8

19 1.02 ACCEPT Ce-141 57 62 4

16 1.09 ACCEPT

calculated from PVNGS value/I sigma error value NRC Acceptance Criteria (a)

Resolution Ratio 4-7 0.5-2.0 8-15 16-50 51-200

>200 0.6-1.66 0.75-1.33 0.80-1.25 0.85-1.18 (a) From NRC Inspection Manual, procedure #84750, "Radioactive Waste Systems; Water Chemistry; Confirmatory Measurements PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPOR 2001 23

8.

Data Interpretations and Conclusions Associated with the analytical process are potential random and systematic errors. Systematic errors can be caused by instrument malfunctions, incomplete precipitation, and back scattering and self-absorption. Random errors are beyond the control of the analyst and are caused by the random nature of radioactive decay.

Efforts are made to eliminate both systematic and random errors in the data reported.

Systematic errors are eliminated by performing reviews throughout the analysis. For example, instruments are checked routinely with radioactive sources and recovery and self-absorption factors based on individual sample analyses are incorporated into the calculation equations where necessary. Random errors are reduced by comparing all data to historical data for the same site and performing cross comparisons between analytical results when available. In addition, when data do not appear to match historical results, analyses may be rerun on a separate aliquot of the sample to verify the presence of the activity. The acceptance of data is dependent upon the results of quality control samples and is part of the data review process for all analytical results.

The "plus or minus value" reported with each analytical result represents the counting error associated with the result and gives the 95% confidence (2G) interval around the data.

Most samples contain radioactivity associated with natural background/cosmic radioactivity (e.g. K-40, Th-234, and Be-7). Gross beta results for drinking water and air are due to natural background. Gamma-emitting nuclides, which can be attributed to natural background sources, are not indicated in this report.

Results and interpretation of the data for all of the samples analyzed during 2001 are presented in the following sections. Assessment of pre-operational and operational data revealed no changes to environmental radiation levels. There were no radiological impacts on the environment due to PVNGS operations in 2001.

8.1.

Air Particulates Weekly gross beta results, in quarterly format, are presented in Tables 8.1 and 8.2.

Historical trend graphs are depicted in Figures 8.1 and 8.2. Gross beta activity ranged from 0.014 to 0.084 pCi/mi3. The associated counting error ranged from 0.001 to 0.003 pCi/m3. Mean quarterly activity is calculated using weekly activity over a thirteen (13) week period, except for those samples marked invalid. Also presented in the tables are the weekly mean values of all the sites as well as the percent relative standard deviation (RSD %) of the data. The findings are consistent with pre-operational baseline and previous operational results. Figure 8.2 shows the results of the gross beta in air from the pre-operational phase compared to the 1991-2001 gross beta in air results. As can be seen, the indicator sites trend consistently with the control site. The results are summarized in Table 11.1.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPEP - :'.NG REPORT - 2001 24

Table 8.3 displays the results of gamma spectroscopy on the quarterly composites. No Cs-134 or Cs-137 was observed.

8.2.

Airborne Radioiodine Tables 8.4 and 8.5 present the quarterly radioiodine results. No airborne radioiodine was observed in any of the samples.

8.3.

Vegetation Table 8.6 presents gamma isotopic data for the vegetation samples. No gamma emitting nuclides were observed in any of the samples.

8.4.

Drinking Water Samples were analyzed for gross beta, tritium, and gamma-emitting nuclides. Results of these analyses are presented in Table 8.7. No tritium or gamma-emitting nuclides were detected in any samples. Gross beta activity ranged from less than detectable, to a high of 11.3 pCi/liter (Chowanec residence, February composite).

8.5.

Groundwater Groundwater samples were analyzed for tritium and gamma-emitting nuclides. Results obtained from the analysis of the samples are presented in Table 8.8.

No tritium or gamma-emitting nuclides were observed in any of the samples.

8.6.

Surface Water Surface water samples from the Reservoir and Evaporation Ponds were analyzed for tritium and gamma-emitting nuclides. The Reservoir contains processed sewage water from the City of Phoenix and is approximately 80 acres in size. The two Evaporation Ponds receive mostly circulating water from main turbine condenser cooling and are about 250 acres each. Results are presented in Table 8.9. 1-131 was observed in Evaporation Pond # 1 in three (3) of the monthly composite samples (8-17 pCi/liter) and four (4) of the Reservoir monthly composite samples (10-20 pCi/liter). The 1-131 is a result of radiopharmaceutical 1-131 in the Phoenix sewage effluent. Low levels of Cs-137 (11-19 pCi/liter) were observed in Evaporation Pond #2 in four (4) of the monthly composite samples. These concentrations were consistent with previous results.

Tritium was routinely observed in Evaporation Ponds I and 2. The highest concentration in Evaporation Pond #1 was 1563 pCi/liter and the highest concentration in Evaporation Pond #2 was 2414 pCi/liter. Tritium was not identified in the Reservoir. The tritium identified in the Evaporation Ponds has been attributed to plant gaseous effluent releases.

PVNGS ANNUAL RADIOLOGICAL ENVIRON*MENTAL OPERATING REPORT - 2001 25

WRF influent (Phoenix sewage effluent) samples collected by the WRF were analyzed for gamma-emitting nuclides and tritium. The results, presented in Table 8.9, demonstrate that 1-131 was observed routinely. The highest 1-131 concentration was 87 pCi/liter (week of December 24th). The results are consistent with assays from the previous years. None of the samples analyzed indicated the presence of tritium.

Table 8.9 also presents gamma spectroscopy and tritium measurements of samples collected from Sedimentation Basin #2. This basin collects rain waters from site runoff and was dry for most of the year. 1-131 was detected at a concentration of 104 pCi/liter in one sample and was due to Cooling Tower overflow. Tritium was detected in five (5) samples ranging from 378 to 7064 pCi/liter. The tritium in this basin has been attributed to plant gaseous effluent releases. Refer to Table 2.3 for additional information.

8.7.

Sludge and Sediment 8.7.1.

WRF Centrifuge waste sludge Sludge samples were obtained from the WRF centrifuge and analyzed by gamma spectroscopy. The 1-131 in the WRF waste centrifuge sludge is consistent with historical values and, as previously discussed, is due to radiopharmaceuticals in the WRF influent. 1-131 was present in all fifty-two samples ranging from 319 to 3154 pCi/kg.

In-I was also identified in the sludge in twenty-six (26) samples. The highest concentration was 75 pCi/kg. It was previously established that In 111 is in use in the Phoenix area as a radiopharrnaceutical. Results for WRF centrifuge waste sludge can be found in Table 8.10.

8.7.2.

Evaporation Ponds #1 and #2 sediment A set of ten (10) Evaporation Pond samples, five (5) from each pond, indicated no gamma-emitters. Sample results can be found in Table 8.10.

PVNGS ANNUAL RADIOLO' <AL ENVIRONMENTAL OPERATING REPORT - 2001 26

8.7.3.

Cooling Tower sludge Sludge originating from Unit 3 was disposed of in the WRF landfill during 2001. The following table presents a summary of the gamma spectroscopy results from the sludge samples.

DATE UNIT APPROXIMATE ISOTOPE ACTIVITY RANGE (pCi/kg) and VOLUME (yd 3) fraction of samples above the MDA Mn-54

<MDA-27 (1 of 30 samples)

Co-60

<MDA-357 (25 of 30 samples) 9-18-01 3

247 Cs-134

<MDA-63 (2 of 30 samples)

Cs-137

<MDA-206 (19 of 30 samples) 8.8.

Data Trends Figures 8.1-8.5 present data in graphical format. Where practical, historical data are displayed for comparison.

PVNGS AN' I ibL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 27

TABLE 8.1 PARTICULATE GROSS BETA IN AIR 1st - 2nd QUARTER ODCM required samples denoted by units are pCi/m3 1st Quarter (control)

START STOP Site Site Site Site Site Site Site Site Site Site RSD Week#

DATE DATE 4

6A*

7A 14A*

15*

17A 21 29*

35 40*

Mean

(%)

I 26-Dec-00 2-Jan-01 0.070 0.069 0.073 0.060 0.062 0.061 0.054 0.062 0.060 0.061 0.063 9.0 2

2-Jan-01 8-Jan-01 0.080 invalid (a) 0.074 0.074 0.084 0.071 0.065 0.068 0.075 0.072 0.074 7.8 3

8-Jan-01 16-Jan-01 0.025 0.021 0.029 0.026 0.026 0.025 0.025 0.029 0.030 0.029 0.027 10.4 4

16-Jan-01 22-Jan-01 0.052 0.052 0.054 0.042 0.056 0.048 0.051 0.054 0.050 0.045 0.050 8.6 5

22-Jan-01 29-Jan-01 0.035 0.036 0.039 0.031 0.039 0.034 0.034 0.039 0.037 0.032 0.036 8.2 6

29-Jan-01 5-Feb-01 0.027 0.029 0.030 0.025 0.030 0.031 0.029 0.026 0.029 0.023 0.028 9.2 7

5-Feb-01 12-Feb-01 0.037 0,033 0.034 0.034 0.033 0.032 0.032 0.031 0.031 0.032 0.033 5.4 8

12-Feb-01 19-Feb-01 0.023 0.023 0.021 0.020 0.028 0.023 0.025 0.019 0.027 0.021 0.023 12.8 9

19-Feb-01 26-Feb-01 0.024 0.018 0.023 0.019 0.019 0.022 0.021 0.021 0.018 0.020 0.021 10.1 10 26-Feb-01 5-Mar-01 0.027 0.023 0.025 0.018 0.025 0.027 0.024 0.023 0.023 0.022 0.024 11.1 11 5-Mar-01 12-.Mar-01 0.014 0.018 0.020 0.020 0.022 0.018 0.018 0.019 0.019 0.018 0.019 11.1 12 12-Mar-01 19-Mar-01 0.029 0.030 0.029 0.030 0.031 0.024 0.029 0.029 invalid (a) 0.027 0.029 7.2 13 19-Mar-01 26-Mar-01 0.029 0.029 0.031 0.032 0.031 0.029 0.029 0.031 0.030 0.030 0.030 3.7 Mean 0.036 0.032 0.037 0.033 0.037 0.034 0.034 0.035 0.036 0.033 0.035 5.4 2nd Quarter (control)

START STOP Site Site Site Site Site Site Site Site Site Site RSD Week #

DATE DATE 4

6A*

7A 14A*

15*

17A 21 29*

35 40*

Mean

(%)

14 26-Mar-Ol 2-Apt-01 0.027 0.030 0.028 0.027 0.027 0.030 0.028 0.025 0.028 0.029 0.028 5.5 15 2-Apr- 01 9-Apr-01 0.020 0.021 0.020 0.021 0.024 0.023 0.020 0.021 0.022 0.021 0.021 6.3 16 9-Apr- 01 16-Apr-01 0.020 0.027 0.025 0.024 0.026 0.024 0.023 0.028 0.027 0.024 0.025 9.5 17 16-Apr- 01 23-Apr-01 0.025 0.020 0.027 0.025 0.026 0.022 0.026 0.024 0.028 0.026 0.025 9.6 18 23-Apr-01 30-Apr-01 0.029 0.029 0.032 0.031 0.034 0.032 0.031 0.032 0.032 0.030 0.031 5.0 19 30-Apr-01 7-May-01 0.020 0.027 0,029 0.029 0.030 0.028 0.028 0.033 0.032 0.031 0.029 12.5 20 7-May-01 14-May-01 0.040 0,044 0.044 0.039 0.042 0.041 0.041 0.041 0.043 0.039 0.041 4.4 21 14-May-01 21-May-01 0.027 0.027 0.027 0.023 0.029 0.026 0.026 0.026 0.031 0.026 0.027 7.8 22 21-May-01 29-May-01 0.035 0.037 0.036 0.025 0.038 0.036 0.032 0.035 0.038 0.030 0.034 12.0 23 29-May- 01 5-Jun-01 0.030 0.033 0.034 0.035 0.036 0.033 0.027 0.031 0.041 0.031 0.033 11.5 24 5-Jun-01 11-Jun-01 0.032 0.032 0.033 0.028 0.034 0.033 0.031 0.033 0.039 0.032 0.033 8.4 25 11-Jun-01 18-Jun-01 0.029 0.029 0.028 0.025 0.028 0.029 0.027 0.027 0.026 0.027 0.028 4.9 26 18-Jun-01 25-Jun-01 0.033 0.036 0.035 0.034 0.038 0.037 0.032 0.036 0.036 0.033 0.035 5.6 Mean 0.028 0.030 0.031 0.028 0.032 0.030 0.029 0.030 0.033 0.029 0.030 4.8 (a) Sample results invalidated as it was not possible to determine actual sample pump run times.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001

TABLE 8.2 PARTICULATE GROSS BETA IN AIR 3rd - 4th QUARTER ODCM required samples denoted by

units are pCi/m3 3rd Quarter START STOP DATE DATE (control)

Site Site Site Site Site Site 4

6A*

7A 14A*

15:;

17A 25-Jun-01 2-Jul-01 0.032 0.037 0.034 0.035 0.034 2-Jul-01 9-JulI-01 0.029 0.030 0.026 0.028 0.032 9-Jul-01 16-JulI-01 0.029 0.030 0.030 0.029 0.028 16-Jul-01 23-Jul-01 0.028 0.027 0.028 0.027 0.028 23-Jul-01 30-Jul-01 0.023 0.025 0.022 0.021 0.023 30-Jul-01 6-Aug-01 0.025 0.025 0.023 0.021 0.025 6-Aug-01 13-Aug-01 0.030 (b) 0.029 (b) 0.031 (b) 0.032 0.029 13-Aug-01 20-Aug-01 0.033 0.036 0.030 0.032 0.030 20-Aug-01 27-Aug-01 0.029 0.037 0.035 0.033 0.032 27-Aug)-01 4-Sep-01 0.026 0.1)26 0.023 0.028 0.027 4-Sep-01 10-Sep-01 0.030 invalid (c) 0.028 0.035 0.036 10-Sep-01 17-Sep-01 0.024 0.026 0.024 0.025 0.027 17-Sep-01 24-Sep-01 0.033 0.031 0.030 0.030 0.030 Mean START STOP DATE DATE 24-Sep-01 1-Oct-01 0.046 1-Oct-01 8-Oct-01 0.037 8-Oct-01 15-Oct-01 0.038 15-Oct-01 23-Oct-01 0.044 23-Oct-01 29-Oct-01 0.044 29-Oct-01 6-Nov-01 0.039 6-Nov-01 13-Nov-01 0.048 13-Nov-01 19-Nov-01 0.041 19-Nov-01 26-Nov-01 0.044 26-Nov-01 3-Dec-01 0.035 3-Dec-01 11-Dec-01 0.024 11 -Dec-01 18-Dec-01 0.034 18-Dee-01 26-Dec-01 0.037 0.028 0.030 0.028 0.029 0.029 4th Quarter Site Site Site Site Site 4

6A*

7A 14A*

15*

0.049 0.039 0.040 0.058 0.049 0.036 0.048 0.036 0.041 0.039 0.023 0.033 0.036 0.048 0.034 0.039 0.055 0.047 0.038 0.051 0.039 0.044 0.041 0.026 0.033 0.040 0.041 0.047 0.037 0.035 0.037 0.035 0.055 0.052 0.045 0.044 0.036 0.035 0.045 0.049 0.033 0.038 0.034 0.033 0.029 0.028 0.021 0.020 0.028 0.031 0.030 0.025 0.032 0.024 0.031 Site 21 0.031 0.030 0.025 0.029 (a) 0.026 0.025 0.028 0.030 0.029 0.025 0.032 0.028 0.030 Site Site Site 29*

35 40*

Mean 0.035 0.032 0.032 0.027 0.022 0.026 0.034 0.031 0.031 0.025 0.031 0.028 0.032 0.036 0.033 0.034 0.033 0.028 0.030 0.030 0.031 0.029 0.028 0.027 0.028 0.022 0.024 0.023 0.027 0.026 0.024 0.033 0.034 0.031 0.035 0.032 0.032 0.035 0.030 0.032 0.027 0.026 0.026 0.035 0.036 0.033 0.026 0.028 0.026 0.030 0.032 0.031 RSD

(%)

5.3 7.9 6.4 2.4 7.3 9.3 7.6 6.6 8.7 5.4 8.7 6.5 3.6 0.028 0.030 0.031 0.030 0.029 0.028 Site 17A 0.049 0.039 0.036 0.054 0.045 0.035 0.050 0.034 0.039 0.043 invalid (e) 0.032 0.035 0.039 0.022 0.023 0.023 0.030 0.031 0.028 0.032 0.031 0.031 0.039 0.041 0.041 0.037 0.038 0.039 0.033 0.033 0.034 0.032 0.034 0.033 Site 21 0.039 0.038 invalid (d) 0.062 0.033 0.035 0.045 0.038 0.042 0.032 0.028 0.033 0.037 Site 29*

0.051 0.037 0.035 0.057 0.036 Site Site 35 40*

Mean 0.047 0.043 0.046 0.039 0.038 0.037 0.034 0.035 0.037 0.059 0.054 0.055 0.051 0.045 0.044 3.2 RSD

(%)

8.3 4.6 5.7 8.8 12.5 0.035 (t) 0.039 (f) 0.037 (f) 0.035 (1) 4.5 0.051 0.050 0.043 0.048 5.8 0.037 0.041 0.033 0.037 8.1 0.042 0.043 0.039 0.042 4.5 0.030 0.037 0.035 0.036 10.0 0.023 0.025 0.020 0.024 9.3 0.033 0.027 0.029 0.031 7.9 0.031 0.032 0.033 0.034 9.5 0.039 0.039 0.040 0.037 0.039 0.032 0.033 0.035 0.032 0.033 3.5 2.9 (a) Site #21 samples were collected on 7-24-01.

(b) Site #4, 6A, and 7A samples were collected on 8-14-01.

(c) Sample results invalidated due to ETM malfunction.

(d) No power ait sample location upon anrival.

(e) Sample head was broken off some time during sample period.

(f) Site #21, 29, 35 and 40 samples were collected on 11-5-(01.

PYNGS ANNUAL RADIOLOGICAL ENVIRONME'NIAL OPERATING REPORT -2001 29 Week #

27 28 29 30 31 32 33

-4 34 35 36 37 38 39 Week #

40 41 42 43 44 45 46 47 48 49 50 51 52 Mean Annual Average

TABLE 8.3 GAMMA IN AIR FILTER COMPOSITES ODCM required samples denoted by

units are pCi/m 3 QUARTER ENDPOINT 26-Mar-01 25-Jun-01 24-Sep-01 26-Dec-01 NUCLIDE Cs-134 Cs-137 Cs-134 Cs-137 Cs-134 Cs-137 Cs-134 Cs-t 37 Site 4

<0.0021

<0.0013

<0.0016

<0.0017

<0.0021

<0.00 18

<0.0013

<0.0012 (control)

Site 6A*

<0.0033

<0.0021

<0.0014

<0.0011

<0.0037

<0.0017

<0.0018

<0.0011 Site Site Site Site 7A 14A*

15*

17A

<0.0018

<0.0017

<0.00 18

<0.0020

<0.0013

<0.00 15

<0.0032

<0.0022

<0.0027

<0.0026

<0.0014

<0.0012

<0.0020

<0.0017

<0.0021

<0.0014

<0.0019

<0.0021

<0.0016

<0.0015

<0.0016

<0.0030

<0.0018

<0.0028

<0.0026

<0.0025

<0.0014

<0.00 13

<0.0024

<0.0017

<0.0023

<0.0016 Site Site 21 29*

<0.0019

<0.0018

<0.0016

<0.0026

<0.0017

<0.0027

<0.0041

<0.0020

<0.0030

<0.00 14

<0.0012

<0.00 19

<0.0018

<0.0023

<0.00 19 Site Site 35 40*

<0.0021

<0.0020

<0.0018

<0.0017

<0.0032

<0.0024

<0.0023

<0.0021

<0.0014

<0.0012

<0.0013

<0.0025

<0.00 19

<0.0029

<0.0026 Quarterly sample results include all samples except those determined to be invalid.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 30

TABLE 8.4 RADIOTODINE IN AIR 1st - 2nd QUARTER ODCM required samples denoted by

units are pCi/m 3 1st Quarter (control)

STOP Site Site DATE 4

6A*

2-Jan-01 8-Jan-01 16-Jan-01 22-Jan-0 1 29-Jan-01 5-Feb-01 12-Feb-01 19-Feb-0 1 26-Feb-01 5-Mar-01 12-Mar-01 19-Mar- 01 26-Mar-1

<0.033

<0.024

<0.025

<0.029

<0.028

<0.023

<0.025

<0.023

<0.029

<0.019

<0.025

<0.023 invalid (a)

<0.027

<0.043

<0.026

<0.029

<0.028

<0.029

<0.040

<0.025

<0.027

<0.023 required LLD <0.070 Site Site Site Site Site Site 7A 14A*

15*

17A 21 29*

<0.021 <0.028

<0.030 <0.026

<0.026 <0.015

<0.025 <0.035

<0.028 <0.030

<0.028 <0.037

<0.025 <0.032

<0.026 <0.021

<0.025 <0.029

<0.031

<0.024

<0.027 <0.021

<0.020 <0.025

<0.027 <0.024

<0.029

<0.022

<0.032

<0.028

<0.031

<0.026

<0.021

<0.024

<0.039 <0.029

<0.038 <.0029

<0.021

<0.029

<0.027

<0.025

<0.023

<0.029

<0.026

<0.017

<0.026

<0.030

<0.020

<0.043

<0.032

<0.033

<0.027

<0.026

<0.032

<0.025

<0.022

<0.020

<0.030

<0.029

<0.032

<0.025

<0.035

<0.034

<0.030

<0.032

<0.030

<0.032

<0.022

<0.025

<0.032

<0.021 Site Site 35 40:

<0.030

<0.038

<0.025

<0.037

<0.032

<0.025

<0.031

<0.024

<0.031

<0.025

<0.028 invalid (a)

<0.033

<0.031

<0.039

<0.025

<0.034

<0.032

<0.024

<0.034

<0.021

<0.028

<0.027

<0.023

<0.026 (control)

STOP Site Site DATE 4

6A*

2-Apr-01 9-Apr-01 16-Apr-01 23-Apr-01 30-Apr-01 7-May-0 1 14-May-01 21-May-01 29-May-01 5-Jun-01 11 -Jun-0 1 18-Jun-0 1 25-Jun-01

<0.023

<0.024

<0.028

<0.024

<0.023

<0.029

<0.025

<0.023

<0.021

<0.029

<0.028

<0.030

<0.034

<0.024

<0.028

<0.023

<0.026

<0.029

<0.026

<0.024

<0.023

<0.025

<0.029

<0.028

<0.024 2nd Quarter required LLD <0.070 Site Site Site Site Site Site 7A 14A*

15" 17A 21 29*

<0.021

<0.022

<0.025

<0.032

<0.029

<0.022

<0.026

<0.019

<0.025

<0.032

<0,025

<0.024

<0.026

<0.032

<0.025

<0.031

<0.027

<0.024

<0.022

<0.026

<0.029

<0.026

<0.023

<0.024

<0.028

<0.022

<0.027

<0.0 19

<0.030

<0.028

<0.021

<0.025

<0.032

<0.029

<0.024

<0.032 <0.025

<0.031 <0.023

<0.026 <0.023

<0.027 <0.021

<0.029 <0.023

<0.029 <0.020

<0.028 <0.035

<0.025 <0.020

<0.024 <0.024

<0.024 <0.023

<0.032 <0.033

<0.031 <0.028

<0.024 <0.026

<0.028

<0.023

<0.024

<0.025

<0.033

<0.025

<0.023

<0.030

<0.025

<0.024

<0.030

<0.024

<0.025 Site Site 35 40*

<0.027

<0.024

<0.031

<0.023

<0.024

<0.026

<0.017

<0.027

<0.023

<0.025

<0.031

<0.029

<0.028

<0.023

<0.025

<0.031

<0.023

<0.029

<0.024

<0.027

<0.029

<0.034

<0.026

<0.021 (a) Sample results invalidated as it was not possible to determine actual sample pump run times.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPE*RATING REPORT - 2001 31 Week #

I 2

3 4

5 6

7 8

9 10 11 12 13 START DATE 26-Dcc-00 2-Jan-01 8-Jan-01 16-Jan-01 22-Jan-0 0 29-Jan-01 5-Feb-01 12-Feb-01 19-Feb-01 26-Feb-0 5-Mar-01 12-Mar-01 19-Mar-01 Week #

14 15 16 17 18 19 20 21 22 23 24 25 26 START DATE 26-Mar-01 2-Api-01 9-Apr- 01 16-Apr-011 23-Apr-01 30-Apr-01 7-May- 01 14-May-01 21-May-0C 29-May-01 5-Jun-01 11 -Jun-01 18-Jun-01 Week #

TABLE 8.5 RADIOIODINE IN AIR 3rd - 4th QUARTER ODCM required samples denoted by

3 units are pCi/rM 3rd Quarter Site 4

(control)

Site 6A*

Site 7A required LLD <0.070 Site Site 14A*

15*

Site 17A Site 21 Site 29*

Site Site 35 40'*

25-Jun-01 2-Jul-01

<0.030

<0.024

<0.021

<0.027

<0.024

<0.023

<0.026

<0.021

<0.024 2-Jul-01 9-Jul-01

<0.022

<0.021

<0.026

<0.021

<0.025

<0.022

<0.021

<0.022

<0.026

<0.024 9-Jul-01 16-Jul-01

<0.019

<0.028

<0.021

<0.024

<0.023

<0.027

<0.022

<0.024

<0.028 16-Jul-01 23-Jul-01

<0.019

<0.031

<0.026

<0.024

<0.032

<0.026

<0.025 (a)

<0.022

<0.024

<0.022 23-Jul-01 30-Jul-01

<0.023

<0.020

<0.024

<0.023

<0.020

<0.027

<0.033

<0.022

<0.023

<0.024 30-Jul-01 6-Aug-01

<0.027

<0.031

<0.029

<0.031

<0.030

<0.021

<0.031

<0.030

<0.031

<0.030 6-Aug-01 13-Aug-01

<0.024 (b)

<0.021 (b) <0.027 (b)

<0.023

<0.027

<0.025

<0.030

<0.029

<0.031 13-Aug-01 20-Aug-01

<0.029

<0.028

<0.025

<0.022

<0.031

<0.022

<0.028

<0.024

<0.031

<0.028 20-Aug-01 27-Aug-01

<0.019

<0.028

<0.022

<0,026

<0.025

<0.022

<0.025

<0.021

<0.018 27-Aug-01 4-Sep-01

<0.022

<0.021

<0.019

<0.024

<0.023

<0.017

<0.022

<0.024

<0.020

<0.022 4-Sep-01 10-Sep-01

<0.038 invalid (c)

<0.033

<0.035

<0.033

<0.032

<0.031

<0.038

<0.031

<0.035 10-Sep-01 17-Sep-01

<0.026

<0.030

<0.026

<0.024

<0.020

<0.030

<0.024

<0.023

<0.027 17-Sep-0I 24-Sep-01

<0.022

<0.028

<0.021

<0.034

<0.026

<0.027

<0.028

<0.026

<0.029

<0.031 Site (control)

Site 4

6A*

Site 4th Quarter required LLD <0,070 Site Site Site Site 7A 14A*

15*

17A Site 21 29*

Site Site 35 40$

24-Sep-01 1-Oct-01

<0.034 1-Oct-01 8-Oct-01

<0.025 8-Oct-01 15-Oct-01

<0.026 15-Oct-0(I 23-Oct-01

<0.020 23-Oct-01 29-Oct-01

<0.028 29-Oct-01 6-Nov-01

<0.025 6-Nov-01 13-Nov-01

<0.031 13-Nov-01 19-Nov-01

<0.024 19-Nov-01 26-Nov-01

<0.025 26-Nov-01 3-Dec-01

<0.019 3-Dec-0 1 11-Dec-01

<0.024 11 -Dec-01 18-Dec-01

<0.028 18-Dec-01 26-Dec-01

<0.020 (a) Site #21 samples were collectcd on 7-24-01.

(b) Site #4, 6A, and 7A samples were collected on 8-14-01.

(c) Sample results invalidated due to ETM malfunction.

<0.0 19

<0.030

<0.027

<0.024

<0.033

<0.026

<0.027

<0.030

<0.023

<0.029

<0.022

<0.024

<0.029

<0.026

<0.029

<0.031

<0.027

<0.029

<0.025

<0.023

<0.024 invalid (d)

<0.025

<0.027

<0.026

<0.021

<0.019

<0.017

<0.028

<0.024

<0.035

<0.023

<0.022

<0.023

<0.030

<0.026

<0.030

<0.027

<0.030

<0.038

<0.031

<0.029

<0.030

<0.0 19

<0.024

<0.021

<0.018

<0.021

<0.032 (f) <0.022 (1) <0.022 (f) <0.030 (J)

<0.023

<0.028

<0.025

<0.033

<0.030

<0.024

<0.020

<0.029

<0.020

<0.028

<0.024

<0.035

<0.039

<0.026

<0.029

<0.021

<0.025

<0.027

<0.025

<0.033

<0.037 invalid (e)

<0.035

<0.025

<0.028

<0.025

<0.022

<0.025

<0.026

<0.029

<0.021

<0.026

<0.020

<0.031

<0.017

<0.019

<0.022

<0.018

<0.023

<0.019

<0.024

<0.020

<0.022

<0.021

<0.027

<0.029

<0.027

<0.023

<0.027

<0.025

<0.020

<0.019

<0.023

<0.015

<0.027

<0.014

<0.029

<0.017 (d) No power at sample location upon arrival.

(c) Sample head was broken off some time during sample period.

(f) Site #21, 29, 35 and 40 samples were collected on 11-5-01.

PVNGS ANNUAL RADIOLOG;ICAL ENVIRONME'N AL OPERATING REPORT -2001 32 Week #

START STOP DATE DATE 27 28 29 30 31 32 33 34 35 36 37 38 39 Week #

START STOP DATE DATE 40 41 42 43 44 45 46 47 48 49 50 51 52

TABLE 8.6 VEGETATION ODCM required samples denoted by

units are pCi/kg, wet

<60

<80 LOCATION TYPE DATE 1-131 Cs-134 Cs-137 COLLECTED STEAGALL RESIDENCE NO SAMPLES AVAILABLE (SITE #47)*

BRANCH kale 18-May-01

<25

<26 RESIDENCE collards 13-Jul-01

<21

<22

<26 (SITE #64) purple cabbage 11-Jan-01

<17

<20

<18 mustard greens 11-Jan-01

<18

<26

<20 ROUSSEAU turnip greens 11-Jan-01

<28

<25

<33 FARMS mustard greens 16-Feb-01

<16

<25

<17 (SITE #62)*

green cabbage 16-Feb-01

<17

<24

<20 turnip greens 16-Feb-01

<23

<33

<29 collards 16-Mar-01

<18

<26

<21 mustard greens 16-Mar-01

<18

<25

<24 cabbage 16-Mar-01

<17

<16

<17 green cabbage 20-Apr-01

<18

<21

<22 DUNCAN green cabbage 19-Oct-01

<19

<23

<22 FAMILY green cabbage 15-Nov-01

<18

<26

<23 FARMS red cabbage 15-Nov-01

<19

<23

<21 endive 15-Nov-01

<19

<21

<18 red cabbage 13-Dec-01

<15

<24

<22 green cabbage 13-Dec-01

<20

<22

<21 escarole (endive) 13-Dec-01

<18

<23

<21 HALLMAN spinach 18-May-0 1

<25

<34

<35 RESIDENCE green lettuce 18-May-01

<19

<27

<21 (SITE #52)*

curly lettuce 18-May-01

<23

<41

<26 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 33

TABLE 8.7 DRINKING WATER ODCM required samples denoted by

units are pCi/liter

<2000 SAMPLE MONTH

<15

<30

<15

<30

<15

<30

<15

<18

<60

<15 QTRLY

<4.0 LOCATION ENDPOINT Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Tritium Gross Beta 29-Jan-01

<11

<23

<9

<25

<11

<18

<11

<10

<36

<14 26-Feb-01

<10

<8

<21

<10

<24

<12

<17

<10

<13

<10

<33

<14 26-Mar-01

<14

<9

<22

<13

<27

<11

<20

<10

<14

<10

<38

<12 30-Apr-01

<11

<10

<21

<12

<25

<10

<19

<9

<10

<12

<37

<11 29-May-01

<8

<17

<9

<20

<10

<15

<7

<10

<9

<24

<9 25-Jun-01

<10

<20

<9

<23

<11

<16

<11

<10

<35

<11 30-Jul-01

<10

<20

<11

<22

<11

<18

<11

<10

<11

<37

<11 27-Aug-01

<10

<9

<16

<10

<25

<10

<18

<10

<11

<39

<9 25-Sep-01

<8

<10 <21

<12

<21

<12

<19

<10

<12

<10

<36

<9 29-Oct-01

<11

<10

<22

<10

<21

<11

<19

<10

<11

<9

<43

<11 26-Nov-01

<7

<6

<16

<8

<17

<8

<11

<8

<9

<7

<27

<9 26-Dec-01

<9

<16

<9

<18

<9

<15

<8

<10

<9

<28

<8

<3.1 3.6 +/- 1.7

<282 3.3 +/- 1.7

<2.9 4.2 +/- 1.7

<280

<2.7 3.1 +/- 1.8

<2.9

<264

<2.9 2.8 +/- 1.7

<2.9

<277 5.3 + 1.7 GAVETTE RESIDENCE (SITE #55) 29-Jan-01

<6

<7

<14

<8

<22

<8

<11

<7

<9

<8

<27

<7

<3.1 26-Feb-01

<11

<10

<21

<10

<21

<10

<18

<10

<II

<10

<38

<13 3.8_+1.8 26-Mar-01

<10

<11

<18

<12

<24

<10

<20

<10

<12

<10

<35

<12

<284 2.8_+1.7 30-Apr-01 (a)

<7

<16

<8

<17

<8

<12

<13

<8

<37

<10

<2.9 29-May-01

<9

<10

<21

<11

<23

<11

<18

<10

<12

<11

<34

<9 2.8+/-1.6 25-Jun-01

<9

<8

<16

<10

<16

<9

<15

<8

<10

<8

<24

<9

<277(a) 3.6_+1.7 30-Jul-01

<8

<7

<19

<7

<21

<7

<14

<9

<8

<28

<11 3.1_+/-1.8 27-Aug-01

<9

<8

<17

<9

<16

<9

<15

<7

<10

<27

<10

<2.9 25-Sep-01

<9

<18

<9

<18

<9

<16

<7

<10

<9

<28

<10

<264

<3.0 29-Oct-01

<7

<8

<16

<10

<18

<8

<13

<7

<9

<26

<11 3.3+1.7 26-Nov-01

<8

<17

<8

<19

<8

<13

<7

<9

<8

<27

<10

<2.9 26-Dec-01

<7

<8

<15

<8

<16

<8

<13

<8

<9

<7

<27

<8

<275 4.8 + 1.7 (a) Weekly well sample not taken on 4-30-01 as it was out of service. Comnposite did not include a sample fromn this date.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENNTAL OPERATING REPORT-2001 34 McARTHUR RESIDENCE (SITE #46)

TABLE 8.7 DRINKING WATER ODCM required samples denoted by

units are pCi/liter

<2000 SAMPLE MONTH

<15

<30

<15

<30

<15

<30

<15

<18

<60

<15 QTRLY

<4.0 LOCATION ENDPOINT Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Tritium Gross Beta BERRYMAN RESIDENCE (SITE #48)*

29-Jan-01 26-Feb-01 26-Mar-01 30-Apr-01 29-May-01 25-Jun-01 30-Jul-01 27-Aug-01 25-Sep-01 29-Oct-01 26-Nov-01 26-Dec-01

<10

<11

<19

<10

<22

<12

<17

<11

<13

<10

<33

<8

<9

<7

<17

<8

<18

<9

<16

<7

<9

<27

<9

<12

<13

<27

<13

<26

<14

<18

<10

<13

<11

<39

<15

<11

<9

<22

<9

<21

<11

<17

<10

<11

<10

<36

<11

<10

<21

<13

<26

<12

<18

<10

<13

<11

<40

<11

<10

<11

<19

<10

<22

<10

<16

<10

<13

<11

<32

<11

<9

<10

<19

<11

<23

<10

<15

<9

<13

<11

<34

<8

<10

<9

<20

<12

<21

<11

<20

<10

<12

<11

<35

<10

<11

<8

<20

<9

<25

<11

<18

<9

<11

<12

<33

<10

<8

<10

<21

<10

<20

<10

<17

<11

<12

<10

<32

<11

<9

<8

<15

<9

<21

<9

<14

<8

<10

<8

<29

<9

<7

<8

<16

<9

<17

<9

<14

<6

<9

<28

<12 3.8 + 1.6

<3.4

<282

<3.3 6.3 + 2.5 3.7 +/- 2.1

<277

<3.4

<3.7

<261

<3.7

<3.3

<3.6

<277 4.5 +/- 2.0 CHOWANEC RESIDENCE (SITE #49)

29-Jan-01 26-Feb-01 26-Mar-01 30-Apr-01 29-May- 01 25-Jun-01 30-Jul-01 27-Aug-01 25-Sep-01 29-Oct-01 26-Nov-01 26-Dec-0I

<7

<8

<14

<7

<18

<8

<14

<8

<7

<30

<8

<9

<8

<15

<9

<18

<9

<14

<7

<9

<8

<29

<10

<11

<10

<19

<10

<22

<11

<19

<10

<12

<10

<35

<12

<9

<11

<21

<10

<19

<10

<18

<9

<11

<34

<12

<9

<10

<22

<12

<21

<12

<17

<11

<12

<11

<32

<13

<9

<8

<20

<10

<25

<10

<17

<11

<33

<8

<11

<10

<19

<10

<22

<11

<18

<10

<11

<10

<39

<12

<8

<6

<16

<7

<15

<8

<13

<7

<9

<7

<27

<12

<6

<17

<9

<18

<8

<12

<7

<10

<8

<26

<10

<7

<8

<17

<9

<16

<8

<15

<7

<8

<23

<8

<10

<21

<10

<22

<11

<16

<10

<12

<11

<34

<13

<8

<7

<15

<8

<18

<7

<14

<8

<27

<8 PVNGS ANNUAL RADIOLOGICAL EN VIRONMENTAL OPERATING REPORT - 2001 35

<3.0 11.3 +/- 2.0

<2.5

<2.8

<2.3

<2.6

<2.8

<2.5

<2.8

<2.3

<279

<281

<262

<277

TABLE 8.8 GROUNDWATER ODCM required samples denoted by

units are pCi/liter SAMPLE DATE

<15

<30

<15

<30

<15

<30

<15

<18

<60

<15

<2000 LOCATION COLLECTED Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Tritium WELL 27ddc (Site #57)*

WELL 34abb (Site #58)*

29-Jan-01

<11

<10

<20

<12

<22

<13

<18

<11

<12

<10

<36

<14

<292 30-Apr-01

<7

<8

<16

<10

<18

<8

<11

<8

<9

<27

<11

<266 30-Jul-01

<10

<22

<10

<21

<13

<19

<10

<12

<9

<35

<12

<266 29-Oct-01

<12

<11

<21

<11

<26

<13

<18

<12

<13

<12

<38

<15

<269 29-Jan-01

<10

<21

<10

<21

<12

<18

<11

<10

<34

<14

<280 30-Apr-01

<11

<12

<24

<13

<25

<13

<16

<12

<11

<35

<14

<265 30-Jul-01

<8

<9

<20

<8

<24

<11

<16

<8

<10

<32

<13

<263 29-Oct-01

<8

<20

<12

<16

<12

<15

<9

<10

<9

<34

<12

<269 PVNGS ANNUAL RAI)IOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 36

TABLE 8.9 SURFACE WATER ODCM required samples denoted by

units are pCi/liter SAMPLE MONTH

<15

<30

<15

<30

<15

<30

<15

<18

<60

<15

<3000 LOCATION ENDPOINT Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Tritium 29-Jan-01

<7

<8

<16

<7

<20

<8

<14 10 + 6

<8

<23

<9 26-Feb-01

<7

<19

<9

<21

<8

<14 14 +/- 8

<8

<25

<12 26-Mar-01

<10

<25

<9

<29

<11

<19 20 +/- 8

<13

<11

<37

<13

<284 30-Apr-01

<9

<7

<13

<8

<16

<9

<11

<7

<8

<29

<11 RESERVOIR 29-May-01

<8

<16

<9

<18

<8

<15 12 +/- 8

<10

<9

<25

<10 (Site #60)

25-Jun-01

<8

<7

<15

<9

<17

<8

<13

<9

<8

<28

<9

<262 30-Jul-01

<7

<9

<15

<10

<18

<9

<15

<9

<8

<29

<11 27-Aug-01

<10

<20

<10

<20

<11

<16

<11

<13

<10

<34

<10 24-Sep-01

<10

<9

<19

<12

<24

<10

<16

<11

<12

<9

<34

<12

<264 29-Oct-01

<10

<9

<20

<10

<24

<10

<18

<11

<12

< 11

<35

<11 26-Nov-01

<10

<19

<12

<24

<10

<20

<11

<12

<11

<36

<8 26-Dec-01

<8

<7

<16

<8

<16

<7

<13

<9

<8

<26

<8

<277 29-Jan-01

<9

<8

<15

<10

<20

<8

<15 9 +/- 7

<8

<7

<29

<10 26-Feb-01

<9

<10

<25

<10

<28

<10

<20 17+ 13

<13

< 11

<36

<11 26-Mar-01

<10

<22

<10

<26

<12

<18

<12

<11

<12

<35

<8 1105 160 30-Apr-01

<9

<8

<21

<12

<18

<9

<14

<8

<10

<29

<10 EVAPPOND1 29-May-01

<11

<21

<12

<23

<11

<20 8_+/-9

<10

<13

<37

<7 (Site #59)*

25-Jun-01

<9

<10

<24

<10

<24

<11

<17

<12

<11

<37

<9 1464+ 182 30-Jul-01

<9

<7

<23

<11

<21

<10

<13

<9

<10

<26

<11 27-Aug-01

<9

<8

<22

<10

<19

<9

<15

<9

<10

<9

<31

<9 25-Sep-01

<11

<10

<22

<13

<23

<11

<17

<10

<12

<32

<10 1563+/-

+ 159 29-Oct-01

<9

<19

<8

<23

<8

<14

<7

<10

<29

<9 26-Nov-01

<9

<19

<12

<22

<9

<13

<8

<11

<8

<27

<12 26-Dec-01

<8

<17

<8

<20

<8

<14

<8

<10

<9

<29

<8 1102+/-180 EVAP POND 2 (Site #63)

29-Jan-01

<8

<18

<9

<18

<8

<13

<8 26-Feb-01

<11

<10

<27

<13

<28

<11

<17

<11 26-Mar-01

<12

<10

<25

<13

<26

<12

<20

<11 30-Apr-01

<8

<21

<10

<22

<9

<17

<8 29-May-01

<8

<20

<12

<22

<9

<15

<8 25-Jun-01

<8

<9

<20

<11

<23

<10

<14

<8 30-Jul-01

<9

<21

<10

<23

<10

<15

<10 27-Aug-01

<11

<22

<11

<29

<11

<20

<11 25-Sep-01

<9

<7

<23

<11

<21

<9

<16

<8 29-Oct-01

<11

<25

<13

<25

<11

<19

<9 26-Nov-01

<9

<10

<22

<11

<27

<11

<17

<11 26-Dec-01

<9

<23

<13

<26

<10

<15

<8

<9 17+8

<13 11 +/- 10

<14

<11

<12

<11

<12

<11

<13

<10

<12

<14

<9 19 +/- 9

<12

<14

<12 19 +/- 9

<12

<14

<27

<6

<37

<8

<42

<12

<27

<11

<30

<9

<25

<13

<30

<11

<37

<10

<30

<11

<39

<10

<35

<9

<34

<12 PVNGS ANNUAl RAI)IOLOGICAL ENVIRONMENTAL OPLRATING REPORT - 2001 37 1579+/-£ 159 126I 179 2414+ 163 1193 +/- 179

TABLE 8.9 SURFACE WATER SAMPLE LOCATION WRF INFLUENT

-I-ODCM required samples denoted by

units are pCilliter DATE COLLECTED Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 2 -Jan-01 9-Jan-01 16-Jan-01 23-Jan-01 30-Jan-01 6-Feb-01 13-Feb-01 20-Feb-0 1 27-Feb-01 6-Mar- 01 13-Mar-01 20-Mar-01 27-Mar- 01 2-Apr-01 10-Apr- 01 16-Apr-01 30-Apr- 01 8-May-01 15-May-(11 22-May-01 29-May-01 5-Jun-01 12-Jun-01 19-Jun-01 26-Jun-01 2-Jul-01 10-Jul-01 17-Jul-01 24-Jul-01 31-Jul-01

<11

<21

<11

<22

<11

<20 28+/- 10

<11

<42

<10

<11

<18

<11

<25

<12

<22 35+/-11

<13

<11

<39

<7

<8

<16

<8

<20

<8

<12 24 +/-8

<8

<27

<8

<7

<14

<10

<19

<9

<11 48+ 10

<7

<8

<27

<11

<21

<15

<20

<12

<22 50+/- 12

<12

<10

<40

<8

<14

<8

<16

<9

<14 61 + 10

<9

<27

<7

<8

<17

<9

<16

<8

<15 24 +/-9

<9

<7

<25

<11

<10

<17

<11

<21

<11

<16 18+/- 10

<10

<33

<10

<17

<11

<24

<9

<17 32 +/-13

<11

<37

<8

<7

<15

<8

<18

<7

<15 53 10

<9

<23

<9

<11

<17

<10

<23

<11

<17 55 11

<12

<10

<34

<10

<9

<19

<11

<20

<10

<19 50 +/-12

<12

<10

<40

<11

<10

<23

<10

<21

<11

<16 28 +/-13

<10

<35

<11

<20

<9

<21

<11

<18 17 +/-12

<12

<39

<8

<9

<20

<9

<21

<10

<17 26+/- 14

<13

<11

<36

<8

<16

<8

<17

<8

<15 13+ 10

<9

<8

<31

<10

<20

<11

<24

<10

<17 33 + 13

<11

<38

<10

<9

<19

<10

<23

<10

<16 16+9

<11

<32

<10

<9

<16

<11

<26

<9

<17 18 +/- 10

<11

<10

<34

<10

<17

<9

<23

<10

<16 24+/- 10

<12

<10

<35

<10

<21

<11

<20

<10

<16 24 +/- 10

<12

<37

<11

<10

<21

<12

<23

<10

<18 14 +/-8

<11

<33

<11

<20

<8

<21

<10

<18 38 +/-11

<10

<33

<10

<20

<10

<21

<9

<16 41 9

<10

<11

<29

<11

<10

<21

<12

<19

<10

<19 41+14

<13

<11

<39

<9

<20

<11

<21

<10

<16 27 +/-10

<13

<11

<34

<10

<20

<12

<22

<10

<17 25 9

<11

<9

<30

<9

<18

<10

<21

<9

<18 23 9

<12

<10

<38

<8

<15

<9

<19

<8

<12 20(+7

<9

<8

<25

<9

<10

<22

<11

<22

<11

<17 18 +/- 9

<11

<40

- Monthly composite PVNGS ANNUAL RADIOILOGICAL ENVIRONMEFNTAL OPERATING REPORT-2001 38

<14

<11

<10

<11

<8

<9

<10

<I0

<10

<11

<10

<13

<11

<10

<11

<8

<9

<12

<8

<9

<8

<10

<9

<11

<10

<11

<11 Tritium

<298**

<291

<273

<276

<279**

TABLE 8.9 SURFACE WATER ODCM required samples denoted by

units are pCi/liter SAMPLE LOCATION DATE COLLECTED Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 WRF INFLUENT (continued) 7-Aug-01 14-Aug-01 21 -Aug-01 28-Aug-01 4-Sep-01 11-Sep-01 18-Sep-01 25-Sep-01 2-Oct-01 9-Oct-01 16-Oct-01 30-Oct-01 6-Nov-01 13-Nov-01 19-Nov-01 27-Nov-01 4-Dec-01 11 -Dec-01 18-Dec-01 24-Dec-01 31-Dec-01

<10

<9

<18

<8

<22

<9

<17

<10

<11

<17

<11

<22

<10

<16

<8

<16

<10

<17

<8

<11

<10

<9

<18

<11

<22

<10

<18

<10

<21

<9

<22

<10

<17

<9

<8

<20

<10

<20

<9

<15

<10

<9

<21

<9

<26

<10

<17

<9

<10

<18

<11

<20

<9

<15

<7

<8

<17

<9

<13

<8

<15

<8

<12

<9

<16

<9

<13

<8

<7

<16

<7

<15

<8

<13

<11

<10

<19

<9

<24

<11

<17

<10

<20

<11

<24

<10

<17

<9

<11

<21

<10

<22

<10

<16

<11

<9

<18

<11

<20

<9

<16

<8

<7

<14

<8

<17

<8

<12

<8

<19

<11

<23

<9

<15

<8

<17

<10

<15

<8

<16

<10

<9

<20

<12

<23

<12

<17

<8

<14

<7

<16

<8

<13

<7

<15

<8

<17

<8

<14

- Monthly composite 13 + 7 20 +/- 9 18++/-6

<12

<10 12 +/- 6 17 +/- 8

<12 28 + 8 24 + 7 31+9 36 11 20 +/- 9 22+ 9 35+/-11 10C) 8 15+ 11

<9 16+ 9 87+ 13 35_+ 11

<12

<11

<37

<10

<12

<11

<36

<12

<8

<7

<28

<8

<12

<11

<35

<10

<11

<37

<10

<9

<28

<11

<32

<11

< 12

<10

<33

<11

<9

<26

<9

<8

<28

<8

<9

<8

<25

<8

<9

<11

<37

<10

<13

<11

<36

<10

<12

<11

<35

<10

<11

<12

<32

<11

<8

<7

<29

<10

<12

<11

<33

<12

<9

<7

<26

<9

<11

<10

<38

<11

<8

<26

<6

<8

<25

<9 16-Jan-01

<9

<24

<12

<20

<10

<17

<10

<14

<11

<3 12-Mar-01

<11

<10

<20

<13

<21

<11

<16

<10

<11

<10

<3 SEDIMENT.

19-Mar-01

<10

<19

<11

<21

<10

<17

<11

<I0

<3 BASIN #2 26-Mar-01

<10

<9

<20

<10

<21

<11

<18

<1 1

<12

<11

<3 2-Apr-01

<10

<21

<11

<23

<10

<17 104 +/- 17 (a)

<12

<9

<3 9-Jul-01

<10

<9

<20

<10

<23

<i0

<19

<10

<11

<3 16-Jul-01

<9

<19

<11

<23

<10

<18

<10

<11

<3 23-Jul-01

<10

<17

<11

<23

<10

<17

<10

<12

<10

<3 30-Jul-01

<8

<15

<10

<20

<8

<12

<6

<10

<7

<2 13-Aug-01

<11

<10

<18

<11

<27

<9

<17

<10

<11

<10

<3 20-Aug-01

<10

<9

<22

<10

<23

<10

<17

<11

<12

<i0

<3 (a) 1-131 concentration was elevated due to U-I cooling tower spill-over to site drainage ditches (see CRDR #2375410).

(b) Tritiuni concentration was clevated and was detcrmined to be due to Unit BAC releases dtring periods of rainfall. (see CRDR #2355136).

4

<10 3

<10 6

<8 9

<10 7

<13 4

<11 4

<9 7

<10 2

<9 5

<13 3

<10 7064 +/- 250 (b)

<314

<294 378 + 181 1095 180

<269

<304

<284

<280 3625 +/- 226 1174 +/- 185 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT-2001 39 Tritium

<270**

<277**

<279**

I LOCATION

TABLE 8.10 SLUDGE/SEDIMENT ODCM required samples denoted by

units are pCi/kg, wet SAMPLE LOCATION WRF CENTRIFUGE WASTE SLUDGE DATE COLLECTED 2-Jan-01 9-Jan-01 16-Jan-01 23-Jan-01 30-Jan-01 6-Feb-01 13-Feb-01 20-Feb-01 27-Feb-0C 6-Mar-01 13-Mar-01 20-Mar-01 27-Mar-Cl 3-Apr-01 IC-Apr-I 16-Apr-0l 24-Apr-0 30-Apr-01 8-May-01 15-May-0 22-May-Cl 29-May-Cl 5-Jun-01 12-Jun-01 19-Jun-01 26-Jun-0C 2-Jul-01 10-Jul-01 17-Jul-01 24-Jul-01 31 -Jul01 7-Aug-01 14-Aug-01 21-Aug-01 28-Aug-01 4-Sep-01 11 -Sep-01 18-Sep-01 25-Sep-01 2-Oct-01 9-Oct-01 16-Oct-0C 30-Oct-01 6-Nov-01 13-Nov-01 19-Nov-01 27-Nov-01 4-Dec-01 11-Dec-0C 18-Dec-01 24-Dec-0C 31-Dec-01 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING K:- PORT - 2001 40 1-131 663 + 61 648 +/- 62 510 + 59 810 +70 707 + 87 1551 +/- 189 1444 + 158 1098 + 140 727 + 97 928 +/- 123 1167 +/- 146 1417 + 171 1760 + 211 1078 +/- 137 880-+ 122 753 + 100 489 + 72 686 + 99 831 + 121 319 +49 868 + Ill 569 + 80 506 +/- 71 525 +/- 73 942 + 120 1029+/- 131 1267 + 154 1435 + 160 1051 + 119 1001 + 114 1243 +/- 139 913 + 115 884 +/- 102 659 +/- 89 568 +/- 77 523 +/- 66 523 +/- 73 463 +/- 67 352 + 54 685 +/- 82 710 +/- 92 793 +/- 93 457 +/- 66 893 + 105 724 + 86 1158+ 141 1430 +/- 177 825 + 106 839 +/- 98 662 - 89 1144+/-141 3154 +/- 362 Cs-134

<36

<25

<19

<26

<18

<22

<20

<29

<22

<18

<23

<24

<28

<25

<24

<12

<23

<24

<29

<28

<20

<29

<28

<20

<27

<16

<25

<21

<18

<17

<20

<10

<17

<10

<22

<17

<19

<22

<20

<19

<15

<20

<18

<17

<22

<18

<23

<19

<24

<25 Cs-137 In-Ill

<16

<28

<13

<27

<13

<21

<17

<22

<11

<22

<24

<20

<17

<16

<20

<18

<26

<18

<37

<18

<20

<24

<22

<20

<10

<22

<21

<19

<21

<15

<21

<17

<16

<20

<14

<24

<20

<17

<14

<18

<13

<16

<15

<16

<18

<20

<14

<23

<15

<17 72 +/- 24 44+31 28 + 21 63 + 18 43 - 23 36 -'18 36+/- 15 31 + 18 30+/- 18 70_+ 19 5 +/- 14 26+ 14 21 + 12 52 + 21 24 +/- 15 44 +/- 15 20 +/- 15 23 +/- 14 24 +/- 17 44 + 34 49 +/- 21 67 +/- 28 70 + 48 75 +/- 27 65 +/- 22 30 +/- 20

TABLE 8.10 SLUDGE/SEDIMENT ODCM required samples denoted by

Units are pCi/kg, wet DATE COLLECTED Mn-54 Co-58 Fc-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 (N)

(E)

EVAP POND 1 (S)

(W)

(C)

(N)

(E)

EVAP POND 2 (S)

(W)

(SW) 14-Dec-01 14-Dec-01

<14

<12

<29

<24

<33

<16

<25

<13

<16

<15

<18

<34

<25

<40

<15

<31

<12

<15

<20

<13

<27

<17

<27

<12

<21

<12

<16

<14

<17

<38

<24

<30

<17

<24

<9

<14

<18

<17

<30

<20

<38

<18

<29

<14

<19

<13

<9

<12

<26

<11

<26

<13

<18

<12

<13

<15

<14

<27

<17

<37

<14

<29

<12

<21

<18

<9

<11

<23

<10

<24

<10

<19

<10

<14

<16

<12

<27

<11

<35

<12

<27

<10

<15

<18

<13

<9

<24

<16

<31

<11

<22

<11

<13

<15

<42

<10

<45

<21

<47

<14

<40

<19

<46

<17

<36

<12

<40

<15

<37

<11

<38

<13

<42

<13 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 41 SAMPLE LOCATION (c)

FIGURE 8.1 HISTORICAL GROSS BETA IN AIR (WEEKLY SYSTEM AVERAGES)

Gross Beta in Air 1991-2001 1.000 weekly average 0.100 0.010 0.001 ON 0o C) c'q C)

( C)

UI C)

O-N 0

C)

IVNGS ANNUAL RAI)IOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 42

.Q-I

--- I 0

C)

FIGURE 8.2 HISTORICAL GROSS BETA IN AIR (ANNUAL SITE TO SITE COMPARISONS) COMPARED TO PRE-OP control location

-+-

Gross Beta in Air Particulates-pre-operational (1981-1985)

-1991 1 AlnC' 0.090 1993

-*K 1994

-o 1995 0.080 19 i 1996 0.070

- 1997

.....1998 0.060 1999 2000 05 2001 0.040 0.030 tL*

Z

<I r.)

C)

U)

Sample Location PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL 01ERATING REPORT - 2001 43 0.100 Q*

0.020 0.010 0.000 all N'

C'-,

U)3 0

FIGURE 8.3 GROSS BETA IN DRINKING WATER M cA rthur (site #46)

---uGavcttc (site #55)

)K Berryman (site #48)

Chowanec (site #49)

Action Level Jan Feb Mar Apr May Jun Jul Aug Sample Date (monthly composite)

Sep Oct Nov NOTES:

MDA values plotted as activity (e.g. <2.3 is plotted as 2.3)

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL Ot1ERATING REPORT - 2001 44 35 30 25 u

20

t 15 5

D Dec lk/

FIGURE 8.4 SOIL Cs-137 COMPARED TO ONSITE SEDIMENT BASIN #2 250 209 238 200 S150 r-100 50 0

(Sedimentation Basin #2 accepts site storm runoff, no other gamma emitters present)

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 45 mE7 1976onsite 1984onsite 1990 soil avg.

soil avg.

70 63 67 1

1993 40 1994 1995 60 2001 1996

<MDA 1998 1997 40 1992

FIGURE 8.5 EVAPORATION POND TRITIUM ACTIVITY EVAP FOND 1 EVAP F(OND2 in srice Evap Pond 1 empty 6U 4U nt cs 31XJ) 0 -

C7

>0000 0'\\

C7NI Cý\\

c7 CD CD I

I I

U 0 U 0

0 U 0

U Ul U

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 46 Evap Pond

9.

Thermoluminescent Dosimeter (TLD) Results and Data The environmental TLD used at PVNGS is the Panasonic Model 812 Dosimeter. The Model 812 is a multi-element dosimeter combining two elements of lithium borate and two elements of calcium sulfate under various filters.

Thermoluminescent dosimeters were placed in forty-eight locations from one to thirty-five miles from the PVNGS. TLD locations are shown in Figures 2.1 and 2.2. TLD locations are described in Table 9.1. TLD results for 2001 are presented in Table 9.2. TLD results for 1985 through 2001 are presented in graphical form on Figure 9.1 (excluding transit control TLD

45).

Figure 9.2 depicts the environmental TLD results from 2001 as compared to the pre operational TLD results (excluding indicator location #41 and 43 that were deleted and #46 50 due to no pre-op TLD at these locations for comparison). As can be seen, the site to site comparisons indicate a direct correlation with respect to pre-operational results. It is evident that the offsite dose, as measured by TLDs, has not changed since Palo Verde became operational.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 47

TABLE 9.1 TLD SITE LOCATIONS (distances and directions are relative to Unit 2 in miles)

LOCATION DESCRIPTION TLD SITE 1

2 3

4 5

6*

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 42 44*

LOCATION E30 ENE24 E21 E16 ESE11 SSE31 SE7 SSE4 S5 SE5 ESE5 E5 NI NNE2 NE2 ENE2 E2 ESE2 SE2 SSE2 S3 SSW3 W5 SW4 WSW5 SSW4 SW1 WSW1 W1 WNW1 NW1 NNW1 NW4 NNW5 NNW8 N5 NNE5 NE5 ENE5 N3 N8 ENE35 Goodyear Scott-Libby School Liberty School Buckeye Palo Verde School APS Gila Bend substation Old US 80 and Arlington School Rd Southern Pacific Pipeline Rd.

Southern Pacific Pipeline Rd.

3 5 5 th Ave. and Elliot Rd.

339th Ave. and Dobbins Rd.

3 3 9th Ave. and Buckeye-Salome Rd.

N site boundary NNE site boundary NE site boundary, WRF access road ENE site boundary E site boundary ESE site boundary SE site boundary SSE site boundary S site boundary SSW site boundary "N of Elliot Rd "N of Elliot Rd "N of Elliot Rd local farm SW site boundary WSW site boundary W site boundary WNW site boundary NW site boundary NNW site boundary S of Buckeye Rd 3 9 5 th Ave. and Van Buren St.

Tonopah Wintersburg Rd. and Van Buren St.

3 6 3rd Ave. and Van Buren St.

355 h Ave. and Buckeye Rd.

34 3rd Ave. N of Broadway Rd.

Wintersburg Ruth Fisher School El Mirage PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 48

TABLE 9.1 TLD SITE LOCATIONS (distances and directions are relative to Unit 2 in miles)

LOCATION Onsite ENE30 E35 E24 ENE 1I WNW5 LOCATION DESCRIPTION Central Laboratory (lead pig)

Litchfield Park School Littleton School Jackrabbit Trail Palo Verde Rd.

S of Buckeye-Salome Rd.

Site #6 and site #44 are the control locations.

- Site #45 is the transit control TLD (stored in lead pig).

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 49 TLD SITE 45**

46 47 48 49 50 LOCATION DESCRIPTION

TABLE 9.2 2001 ENVIRONMENTAL TLD RESULTS units are mren/std qtr TLD Site #

1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Average 1

21.7 21.9 23.0 23.7 22.6 2

20.3 19.3 20.8 22.1 20.6 3

23.7 MISSING 23.0 22.7 23.1 4

21.8 22.2 21.8 22.4 22.1 5

21.2 20.8 21.4 22.1 21.4 6 (control) 25.0 23.6 25.3 26.0 25.0 7

24.0 23.2 23.8 24.9 24.0 8

22.4 21.0 22.4 22.1 22.0 9

27.8 26.2 27.7 29.5 27.8 10 21.9 21.6 21.7 23.9 22.3 11 23.0 23.2 22.9 24.2 23.3 12 22.5 21.0 21.4 22.5 21.9 13 22.3 23.1 23.6 25.1 23.5 14 24.2 22.5 22.5 25.5 23.7 15 21.5 21.8 22.1 23.3 22.2 16 21.3 19.8 20.6 21.6 20.8 17 22.2 22.4 23.5 25.0 23.3 18 21.9 21.6 21.8 23.2 22.1 19 23.3 23.1 23.3 25.0 23.7 20 21.4 22.0 22.6 23.0 22.3 21 23.8 22.7 23.7 24.5 23.7 22 24.5 23.3 24.8 27.2 25.0 23 20.3 21.1 21.2 22.7 21.3 24 20.6 20.1 20.6 21.7 20.8 25 20.9 21.7 22.3 21.6 21.6 26 24.3 23.6 24.7 26.4 24.8 27 26.3 25.0 25.6 27.0 26.0 28 25.0 23.6 23.5 25.2 24.3 29 22.8 23.5 22.7 23.8 23.2 30 25.7 24.9 24.4 25.0 25.0 31 21.2 21.6 21.5 22.1 21.6 32 22.3 24.2 23.9 24.3 23.7 33 24.5 24.2 24.4 25.2 24.6 34 26.4 25.5 25.9 25.6 25.9 35 29.2 27.5 29.0 29.2 28.7 36 23.1 23.3 23.3 23.6 23.3 37 20.1 22.5 22.3 22.1 21.8 38 26.4 25.2 25.5 26.1 25.8 39 21.7 22.4 22.1 21.5 21.9 40 22.8 22.8 23.6 22.6

23. 0 42 26.1 24.9 24.6 25.4 25.3 44 (control) 18.2 18.2 20.3 17.1 18.5 45 (transit control) 5.1 5.4 5.2 3.7 4.9 46 25.3 24.8 24.9 24.7 24.9 47 20.5 22.0 22.0 21.3 21.5 48 22.5 21.4 23.0 21.4 22.1 49 20.6 20.2 21.4 20.3 20.6 50 17.9 17.5 18.2 18.1 17.9 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 50

FIGURE 9.1 NETWORK ENVIRONMENTAL TLD EXPOSURE RATES SmR/std qtr SBASELINE

-10YEAR MEAN t-00 00OcNOC N

ýCý r

00 00 00 00 00 ON ON1 ON ONO U

u cd 1)cd

)

z ON CC)

C/)

i re)

ONýON O"N 6.-

ON, 0.

In, ON oll ON CON C\\

ONl Ct V)2

ý:Ln c

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 51 30.0 28.0 26.0 24.0 C

t S

22.0 20.0 18.0 kn 00 00 00 L5 L

N 0 0 ON ON C ON, C

o a

Cl

FIGURE 9.2 ENVIRONMENTAL TLD COMPARISON - PRE-OPERATIONAL VS 2001 35 1 INII4I

_D

-R-APn(l Av4-1 E

Annual Averag ELD

.. I i i 1 _ 1 i I I I

1 3

5 7

9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 t2 45 TEDNUvUBR TLD #41 monitoring location was deleted in June, 2000.

TLD #43 monitoring location was deleted in 1994.

TLDs #46-50 are not included since they were not included in the pre-op monitoring program.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 52

~30 S257 20 15

[ 10 c*5

10.

Land Use Census 10.1.

Introduction In accordance with the PVNGS ODCM, Section 6.2, the annual Land Use Census was performed within five miles of Unit 2 containment in June-July, 2001.

Observations were made in each of the 16 meteorological sectors to determine the nearest milking animals, residences, and gardens of greater than 500 square feet. This census was completed by driving the roads and speaking with residents.

The results of the Land Use Census are presented in Table 10.1 and discussed below.

The directions and distances listed are in sectors and miles from the Unit 2 containment.

10.2.

Census Results Nearest Resident There were seven (7) changes in nearest resident status. Refer to Table 10.1 for specific location changes.

Milking Animal Goats were located in the ENE, NNE and NE sectors. Dose calculations indicated the highest dose to be 0.703 mrem (milk animals with garden). Since the locations were all between 3 and 5 miles distant, and calculated doses were <1 mrem, milk sampling was not added to the REMP, as allowed by the ODCM.

Vegetable Gardens There were seven (7) changes in nearest garden status. Dose calculations indicated the highest dose to be 0.482 mrem.

See Table 10.1 for a summary of the specific results and Table 2.1 for current sample locations.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 53

TABLE 10.1 2001 LAND USE CENSUS (Distances and directions are relative to Unit 2 in miles)

NEAREST NEAREST NEAREST CALCULATED DOSE SECTOR RESIDENT GARDEN MILK ANIMAL (mrem)

CHANGE (COW/GOAT)

FROM 2000 N

1.55 2.87 NONE 7.OOE-02 (RESIDENT)

RESIDENT 1.42E-01 (GARDEN)

GARDEN NNE 1.66 2.05 3.78 (goats) 1.32E-01 (RESIDENT) 4.19E-01 (GARDEN)

GARDEN 2.24E-01 (MILK)

NE 2.16 3.14 3.91 (goats) 1.79E-01 (RESIDENT) 4.81E-01 (GARDEN)

GARDEN 7.03E-01 (GARDEN/MILK)

ENE 2.87 4.67 4.84 (goats) 9.83E-02 (RESIDENT)

GARDEN 1.92E-01 (GARDEN)

MILK 2.94E-01 (MILK)

E 2.81 4.87 NONE 1.16E-01 (RESIDENT)

GARDEN 1.78E-01 (GARDEN)

ESE 3.18 3.78 NONE 1.48E-01 (RESIDENT) 4.82E-01 (GARDEN)

RESIDENT SE 4.18 NONE NONE 1.41E-01 NONE SSE NONE NONE NONE RESIDENT S

4.67 NONE NONE 3.69E-01 NONE SSW NONE NONE NONE RESIDENT SW 1.40 NONE NONE 2.48E-01 GARDEN WSW 0.75 NONE NONE 1.64E-01 NONE W

0.70 NONE NONE 1.05E-01 RESIDENT WNW 2.67 NONE NONE 2.40E-02 RESIDENT NW 1.12 NONE NONE 6.01E-02 RESIDENT NNW 2.64 3.49 NONE 3.27E-02 (RESIDENT)

GARDEN 1.06E-01 (GARDEN)

COMMENTS:

Dose calculations were performed using the GASPAR code and 2000 meteorological data and source term. Dose reported for each location is the total for all three PVNGS Units and is the highest individual dose identified (organ, bone, total body, or skin).

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT-2001 54

11.

Summary and Conclusions The conclusions are based on a review of the radioassay results and background gamma radiation measurements for the 2001 calendar year. Where possible, the data were compared to pre-operational sample data.

All sample results for 2001 are presented in Tables 8.1-8.10 and do not include observations of naturally occurring radionuclides, with the exception of gross beta in air and gross beta in drinking water. Table 11.1 summarizes the ODCM required samples and is in the format required by the NRC BTP on Environmental Monitoring.

1-131 concentrations identified on occasion in the Evaporation Ponds, WRF Influent, WRF Centrifuge sludge, and Reservoir are the result of offsite sources and appear in the effluent sewage from Phoenix. The levels of 1-131 detected in these locations are consistent with levels identified in previous years.

Tritium concentrations identified in surface water onsite have been attributed to PVNGS gaseous effluent releases. These concentrations are consistent with historical values. The Radioactive Gaseous Effluent Release program accounts for tritium released via this pathway.

There were no observed radiological impacts on the environment due to PVNGS operations in 2001.

Natural background radiation levels are consistent with measurements reported in previous Pre-operational and Operational Radiological Environmental annual reports, References 1 and 2.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 55

TABLE 11.1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL

SUMMARY

Palo Verde Nuclear Generating Station Docket Nos. STN 50-528/529/530 Maricopa County, Arizona Calendar Year 2001 Medium or Lower Limit of All Indicator Location with Highest Annual Mean Control Pathway Type and Total Detection Locations Locations Number of Sampled Number of (LLD)

Name Mean (t)a Nonroutine (Unit of Analyses (from Table Mean (f)a Distance and Range Mean (f)'

Reported Measurement)

Performed 6.1)

Range Direction Range Measurements Direct Radiation TLD - 191 NA 23.1 (178/178)

Site #35 28.7 (4/4) 21.8 (8/8) 0 (mrem/std. qtr.)

17.5 -29.5 8 miles 3350 27.5 - 29.2 17.1 - 26.0 Air Particulates Gross Beta - 515 0.010 0.033 (465/465)

Site #35 0.035 (51/51) 0.033 (50/50) 0 (pCi/m 3) 0.014 - 0.084 8 miles 3350 0.018 - 0.075 0.018 - 0.069 Gamma Spec.

Composite-40 Cs-134 0.05

<LLD NA

<LLD

<LLD 0

Cs-137 0.06

<LLD NA

<LLD

<LLD 0

Air Radioiodine Gamma Spec. - 515 (pCi/m3 )

1-131 0.07

<LLD NA

<LLD

<LLD 0

Broadleaf Gamma Spec. - 22 Vegetation 1-131 60

<LLD NA

<LLD

<LLD 0

(pCi/Kg-wet)

Cs-134 60

<LLD NA

<LLD

<LLD 0

Cs-137 80

<LLD NA

<LLD

<LLD 0

Groundwater Tritium - 8 2000

<LLD NA

<LLD NA 0

(pCi/liter)

Gamma Spec. - 8 Mn-54 15

<LLD NA

<LLD NA 0

Fe-59 30

<LLD NA

<LLD NA 0

Co-58 15

<LLD NA

<LLD NA 0

Co-60 15

<LLD NA

<LLD NA 0

Zn-65 30

<LLD NA

<LLD NA 0

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 56

TABLE 11.1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL

SUMMARY

Palo Verde Nuclear Generating Station Docket Nos. STN 50-528/5291530 Maricopa County, Arizona Calendar Year 2001 Medium or Lower Limit of All Indicator Location with Highest Annual Mean Control Pathway Type and Total Detection Locations Locations Number of Sampled Number of (LLD)

Name Mean (f)'

Nonroutine (Unit of Analyses (from Table Mean (f)a Distance and Range Mean (f)a Reported Measurement)

Performed 6.1)

Range Direction Range Measurements Zr-95 30

<LLD NA

<LLD NA 0

Nb-95 15

<LLD NA

<LLD NA 0

Groundwater 1-131 15

<LLD NA

<LLD NA 0

(pCi/liter)

Cs-134 15

<LLD NA

<LLD NA 0

-continued-Cs-137 18

<LLD NA

<LLD NA 0

Ba-140 60

<LLD NA

<LLD NA 0

La-140 15

<LLD NA

<LLD NA 0

Gross Beta - 48 4.0 5.8 (18/48)

Site #49 11.3 (1/12)

NA 0

2.8-11.3 2 miles 00 11.3-11.3 Tritium - 16 2000

<LLD NA

<LLD NA 0

Gamma Spec. - 48 Drinking Water Mn-54 15

<LLD NA

<LLD NA 0

(pCi/liter)

Fe-59 30

<LLD NA

<LLD NA 0

Co-58 15

<LLD NA

<LLD NA 0

Co-60 15

<LLD NA

<LLD NA 0

Zn-65 30

<LLD NA

<LLD NA 0

Zr-95 30

<LLD NA

<LLD NA 0

Nb-95 15

<LLD NA

<LLD NA 0

1-131 15

<LLD NA

<LLD NA 0

Cs-134 15

<LLD NA

<LLD NA 0

Cs-137 18

<LLD NA

<LLD NA 0

Ba-140 60

<LLD NA

<LLD NA 0

La-140 15

<LLD NA

<LLD NA 0

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 57

TABLE 11.1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL

SUMMARY

Palo Verde Nuclear Generating Station Docket Nos. STN 50-528/529/530 Maricopa County, Arizona Calendar Year 2001 Medium or Lower Limit of All Indicator Location with Highest Annual Mean Control Pathway Type and Total Detection Locations Locations Number of Sampled Number of (LLD)

Name Mean (fla Nonroutine (Unit of Analyses (from Table Mean (t)a Distance and Range Mean (f)a Reported Measurement)

Performed 6.1)

Range Direction Range Measurements Gamma Spec. - 36 Mn-54 15

<LLD NA

<LLD NA 0

Fe-59 30

<LLD NA

<LLD NA 0

Co-58 15

<LLD NA

<LLD NA 0

Co-60 15

<LLD NA

<LLD NA 0

Zn-65 30

<LLD NA

<LLD NA 0

Zr-95 30

<LLD NA

<LLD NA 0

Nb-95 15

<LLD NA

<LLD NA 0

Surface Water 1-131 15 13 (7/36)

Site #60 14 (4/12)

NA 0

(pCi/liter) 8 - 20 Onsite 67' 10 - 20 Cs-134 15

<LLD NA

<LLD NA 0

Cs-137 18 17 (4/36)

Site #63 17 (4/12)

NA 0

11-19 Onsite 1800 11-19 Ba-140 60

<LLD NA

<LLD NA 0

La-140 15

<LLD NA

<LLD NA 0

Tritium - 12 3000 1460 (8/12)

Site #63 1612 (4/4)

NA 0

1102-2414 Onsite 180' 1193 -2414 (a) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses. (f)

NOTE: Miscellaneous samples which are not listed on Tables 2.1 and 9.1 (not ODCM required) are not included on this table.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT-2001 58

12.

References

1. Pre-Operational Radiological Monitoring Program, Summary Report 1979-1985.

2. 1985-2000 Annual Radiological Environmental Operating Reports, Palo Verde Nuclear Generating Station.

3. Palo Verde Nuclear Generating Station Technical Specifications and the Technical Reference Manual (TRM).

4. Offsite Dose Calculation Manual, PVNGS Units 1, 2, and 3.

5. Regulatory Guide 4.8, Environmental Technical Specifications for Nuclear Power Plants.

6. Branch Technical Position, Revision 1, November 1979.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2001 59

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