ML091240287

Annual Radiological Environmental Operating Report 2008

ML091240287
Person / Time
Site:	Palo Verde
Issue date:	04/24/2009
From:	Weber T Arizona Public Service Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
102-05996-TNW/KAR
Download: ML091240287 (71)

Text

m_%ed A subsidiary of Pinnacle West Capital Corporation Palo Verde Nuclear Generating Station Thomas N. Weber Department Leader Regulatory Affairs Tel. 623-393-5764 Fax 623-393-5442 Mail Station 7636 PO Box 52034 Phoenix, Arizona 85072-2034 102-05996-TNW/KAR April 24, 2009 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Units 1, 2, and 3 Docket Nos. STN 50-528/5291530 Annual Radiological Environmental Operating Report 2008 In accordance with PVNGS Technical Specification (TS) 5.6.2, enclosed please find the Annual Radiological Environmental Operating Report for 2008.

No commitments are being made to the NRC in this letter. Should you need further information regarding this submittal, please contact Russell A. Stroud, Licensing Section Leader, at (623) 393-5111-.

Sincerely, TNW/RAS/KAR/gat Enclosure cc:

E. E. Collins Jr.

J. R. Hall R. I. Treadway A. V. Godwin T. Morales NRC Region IV Regional Administrator NRC NRR Project Manager NRC Senior Resident Inspector for PVNGS Arizona Radiation Regulatory Agency (ARRA)

Arizona Radiation Regulatory Agency (ARRA)

A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway - Comanche Peak - Diablo Canyon

• Palo Verde

• San Onofre

• South Texas

• Wolf Creek

ENCLOSURE Units 1, 2, and 3 Annual Radiological Environmental Operating Report 2008

/

NUCLEAR GENERATING STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 2008

(

Reference:

RCTSAI 1643, Legacy Item No. 036843.01)

Drinovsky, J(Z33699) s.Digitally signed by Drinovsky, LouiS Louis J(Z33699)

DN: cn=Drinovsky, Louis J j

(Z33699)

Date: 2009.03.25 13:22:40 -07'00' Prepared by:.

Gray, Thomas S(Z99610)

Digitally signed by Gray, Thomas S 1(Z99610)

. DN: cn=Gray, Thomas S(Z99610) 4 Reason: I have reviewed this document Date: 2009.03.25 13:38:59 -07'00' Reviewed by:

, Digitally signed by Gaffney, John P "DN: cn=Gaffney, John P(Z36459)

Reason: I am approving this document P(

36 59 Date: ;*009.04.10 10:57:44 -07'00' Approved by:

Director, Radiation Protection

TABLE OF CONTENTS

1.

IN TRO D U CTION..........................................................................................................................

2

2.

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

3 2.1.

2008 PVNGS RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM..................

... 3 2.2.

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM CHANGES FOR 2008..................

3 2.3.

REMP DEVIATIONS/ABNORMAL EVENTS

SUMMARY

........................................................... 4 2.4.

SIGNIFICANT INVESTIGATION REGARDING GROUND WATER PROTECTION........................... 4

3.

SA M PLE CO LLECTION PRO G RA M...................................................................................

12 3.1.

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

12 3.2.

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

12 3.3.

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

12 3.4.

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

12 3.5.

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

13

4.

AN A LY TICA L PRO CED U RES...............................................................................................

13 4.1.

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

13 4.2.

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

13 4.3.

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

13 4.4.

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

14 4.5.

SLUDGE/SEDIM ENT............................................................................................................. 14 4.6.

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

14 4.7.

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

15

5.

NUCLEAR INSTRUMENTATION 15 5.1.

G AM MA SPECTROM ETER..................................................................................................... 15 5.2.

LIQUID SCINTILLATION SPECTROM ETER.............................................................................

15 5.3.

G AS FLOW PROPORTIONAL COUNTER................................................................................. 15

6.

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

16 6.1.

LOW ER LIM ITS OF D ETECTION............................................................................................. 16 6.2.

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

16 6.3.

LLD AND REPORTING CRITERIA O VERVIEW........................................................................ 17

7.

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

22 7.1.

Q UALITY CONTROL PROGRA M................................................................................................ 22 7.2.

INTERCOM PARISON RESULTS.................................................................................................. 22

8.

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

25 8.1.

A IR PARTICULATES................................................................................................................. 25 8.2.

A IRBORNE RADIOIODINE......................................................................................................... 26 8.3.

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

26 8.4.

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

26 8.5.

D RINKING W ATER...................................................................................................................

26 8.6.

G ROUND W ATER..................................................................................................................... 26 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 ii

TABLE OF CONTENTS 8.7.

SURFACE W ATER.................................................................................................................... 26 8.8.

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

27 8.9.

D ATA TRENDS......................................................................................................................... 28

9.

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

51

10.

LA N D U SE CEN SU S..................................................................................................................

57 10.1.

INTRODUCTION.......................................................................................................................

57 10.2.

C ENSUS RESULTS.................................................................................................................... 57

11.

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

59

12.

RE FEREN CE S.............................................................................................................................

64 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 iii

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

6 TABLE 2.2 SAMPLE COLLECTION SCHEDULE.............................................................................

7 TABLE 2.3 SUMMARIES OF REMP DEVIATIONS/ABNORMAL EVENTS.................................. 8 TABLE 6.1 ODCM REQUIRED LOWER LIMITS OF DETECTION (A PRIORI)..........................

19 TABLE 6.2 ODCM REQUIRED REPORTING LEVELS..................................................................

20 TABLE 6.3 TYPICAL MDA VALUES...............................................................................................

21 TABLE 7.1 INTERLABORATORY COMPARISON RESULTS.....................................................

23 TABLE 8.1 PARTICULATE GROSS BETA IN AIR 1 ST - 2ND QUARTER..................................

29 TABLE 8.2 PARTICULATE GROSS BETA IN AIR 3RD - 4TH QUARTER.................................. 30 TABLE 8.3 GAMMA IN AIR FILTER COMPOSITES..........................................................................

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

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

33 T A B L E 8.6 V E G E T A T IO N......................................................................................................................

34 T A B L E 8.7 M IL K.....................................................................................................................................

3 5 TA B LE 8.8 D R IN K IN G W A TER.............................................................................................................

36 TA B LE 8.9 G R O U N D W A TER..............................................................................................................

38 TA B LE 8.10 SU R FA C E W A TER............................................................................................................

39 TA BLE 8.11 SLUD GE/SED IM EN T.............................................................................

...................... 43 TABLE 9.1 TLD SITE LOCATIONS.................................................................................................

52 TABLE 9.2 2008 ENVIRONMENTAL TLD RESULTS................................................................... 54 TABLE 10.1 2008 LAND USE CENSUS............................................................................................

58 TABLE 11.1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL

SUMMARY

... 60 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 iv

LIST OF FIGURES FIGURE 2.1 REMP SAMPLE SITES - MAP (0-10 miles)............................................................

10 FIGURE 2.2 REMP SAMPLE SITES - MAP (10-35 miles)..........................................................

11 FIGURE 8.1 HISTORICAL GROSS BETA IN AIR (WEEKLY SYSTEM AVERAGES)........... 46 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.....................................................................................................................

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

48 FIGURE 8.4 EVAPORATION POND TRITIUM ACTIVITY.......................................................

49 FIGURE 8.5 SEDIMENTATION BASIN #2 Cs-137.......................................................................

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

55 FIGURE 9.2 ENVIRONMENTAL TLD COMPARISON - PRE-OPERATIONAL VS 2008......

56 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 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 plant related radionuclide concentrations.

During 2008, the following categories of samples were collected by APS:

• Broad leaf vegetation

• Ground water

• Drinking water Surface water Airborne particulate and radioiodine

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

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 Reservoirs, Evaporation Ponds, and two (2) deep wells. Offsite samples analyzed by ARRA include two (2) local resident wells. ARRA also performs air sampling at seven (7) offsite locations identical to APS and maintains approximately fifty (50) environmental TLD monitoring locations, eighteen (18) of which are duplicates of APS locations.

A comparison of pre-operational and operational data indicates no changes to environmental radiation levels.

Low level tritium was discovered in subsurface water onsite (not considered potable) in February 2006 at Units 2 and 3. A significant investigation was initiated to determine the source of the water, the extent of the condition, and corrective actions to protect ground water. See Section 2.4 for further discussion.

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

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 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 CFR 50, Appendix I, PVNGS Technical Specifications, and with the guidance provided by the US Nuclear Regulatory Commission (USNRC) in their Radiological Assessment Branch Technical Position on Environmental Monitoring, Revision 1, November 1979 (incorporated into NUREG 1301).

This report contains the measurements and findings for 2008. 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 radiological exposure pathways to the public; 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 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 2

2.

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

2.1.

2008 PVNGS Radiological Environmental Monitoring Program The assessment program consists of routine measurements of environmental gamma radiation and of radionuclide concentrations in media such as air, ground water, drinking water, surface water, vegetation, milk, 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. This laboratory is licensed by the Arizona Department of Health Services (ADHS) to perform radiological analyses.

Environmental gamma radiation measurements were performed by APS using TLDs at fifty (50) locations near PVNGS. The PVNGS Dosimetry Department is accredited by the National Voluntary Laboratory Accreditation Program (NVLAP) to perform ionizing radiation dosimeter analyses.

In addition to monitoring environmental media, a land use census is performed annually to identify the nearest milk animals, residents, and gardens. 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 2008 NOTE: All changes listed below were implemented by ODCM Rev. 23, effective 7-11-08.

The vegetation sample location at Site #47 (Garden of Eatin', NNE3) became permanently unavailable and was replaced in July (Lahti residence, N3). This was documented in the Corrective Action Program by CRDR #3133845 and CRAI

1. 3136750.

> The goat milk sample location at Site #51 (Painter residence, NE4) became permanently unavailable and was deleted. No replacement location was identified. This was documented in the Corrective Action Program by CRDR #3161377 and CRAI

1. 3161378.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 3

> The sample and analysis frequencies for all Evaporation Ponds and Reservoirs were changed from weekly/monthly/quarterly to quarterly. This change was processed after a review of more than 20 years of historical data and implements ODCM Revision 23.

> Added new Evaporation Pond #3 to the REMP.

> Added sample Site #43, Winters Well School TLD, to the REMP (ACT #3119292).

Refer to Table 2.1 for a description of all current sample locations (except TLDs).

2.3.

REMP Deviations/Abnormal Events Summary.

During calendar year 2008, there were eight (8) deviations/abnormal events with regard to the monitoring program. Refer to Table 2.3 for more detail and any corrective actions taken.

" The vegetation sample location at Site #47 (Garden of Eatin', NNE3) became permanently unavailable

" The goat milk sample location at Site #51 (Painter residence, NE4) became permanently unavailable.

" The air samples at Site #15 were invalid from 8/20 through 9/2

• The air samples at Site #4 were invalid from 9/23 through 9/30

• The air samples at Site #35 were invalid from 10/21 through 10/28

• Evaporation Pond #2 was emptied for liner replacement

" TLDs at Site #2 were missing in the 4 th quarter

• TLDs at Site #36 were missing in the 1 st and 2nd quarter 2.4.

Significant Investigation Regarding Ground Water Protection (Follow-Up from 2007 AREOR)

NOTE:

Although not part of the REMP, this information is being provided due to the identification of low level tritium in the onsite environs (within the Radiological Controlled Area) and heightened sensitivity to communicate the potential to affect ground water.

On February 15, 2006 Palo Verde personnel observed water leakage into the Unit 2 Essential Pipe Density Tunnel through the 'B' Spray Pond (SP) supply line penetration seal (documented on Significant CRDR No. 2869959). Low level tritium was identified in this water. It has been determined that the water was not the result of leakage from a plant system, but more likely due to previous operating conditions combined with precipitation.

The investigation revealed that Unit 3 had a similar situation.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 4

Several monitoring wells have been installed to monitor the subsurface water and shallow aquifer at Units 1, 2, and 3. These wells are sampled monthly and quarterly for chemical and radiological parameters. The State of Arizona Area-Wide Aquifer Protection Permit No. P-100388 (APP) provides agreed upon monitoring parameters and reporting thresholds. Sample results are reported in the PVNGS Annual Radioactive Effluent Release Report (ARERR).

PVNGS has implemented a ground water protection program initiated by the Nuclear Energy Institute (NEI). This initiative, NEI 07-07 (Industry Ground Water Protection Initiative - Final Guidance Document, August 2007), provides added assurance that ground water will not be adversely affected by PVNGS operations. The State of Arizona APP provides specific regulatory criteria for ground water protection.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 5

Table 2.1 SAMPLE COLLECTION LOCATIONS m

SITE #

SAMPLE TYPE LOCA ITION:

LOCATION DESCRIPTION air air air air air air air air air air drinking water

• vegetation drinking water drinking water milk vegetation milk milk drinking water (supplemental) ground water ground water surface water surface water surface water vegetation surface water

.surface water

,SSE1i3 ESE3~

NI'2 4E

~E3#i

?

N 2j N3ý(b)

NIE4 (b)

ENE3ý

'NE36 NNE4 SW3 ONSITE ONSITE:

HONSJITF_

~ONSHTE r NSITE ENE26 ONSITE

~ONSITE ()L APS Office Old US 80 Arlington School 37 1" Ave. and Buckeye-Salome Rd.

NE Site Boundary 351" Ave.

S Site Boundary W Site Boundary Tonopah Transmission Rd Wirth residence Lahti residence (new, replaced Garden of Eatin' as of July)

Berryman residence Sandoval residence Deleted as of July Wright residence Martin residence-goats Hernandez residence-goats Gavette residence Well 27ddc Well 34abb Evaporation Pond #1 85 acre Reservoir 45 acre Reservoir Duncan Family Farms Evaporation Pond #2 Evaporation Pond #3 (new)

NOTES:

• Designates a control site (a) Distances and direction nearest mile are from the center-line of Unit 2 containment and rounded to the (b) Denotes a change in location or a new sample 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 ENVIRONMENTAL OPERATING REPORT - 2008 6

Table 2.2 SAMPLE COLLECTION SCHEDULE SAMPLE AIR AIRBORNE GROUND DRINKING SURFACE SITE #

PARTICULATE MILK RADIOIODINE VEGETATION WA TER WA TER WA TER 4

W W

6A W

W 7A W

W 14A W

W 15 W

W 17A W

W 21 W

W 29 W

W 35 W

W 40 W

W 46 W

47 M!AA 48 W

49 W

51 M/AA DELETED 7-08 52 M/AA 53 M/AA 54 M/AA 55 W

57 Q

58 Q

59 W/Q 60 W/Q 61 W/Q 62 M/AA 63 W/Q

• 64 NEW W = WEEKLY M/AA = MONTHLY AS AVAILABLE Q = QUARTERLY PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 7

TABLE 2.3 SUMMARIES OF REMP DEVIATIONS/ABNORMAL EVENTS Deviation/Abnormal Event

1. The vegetation sample location at Site #47 (Garden of Eatin', NNE3) became permanently unavailable.

2. The goat milk sample location at Site #51 (Painter residence, NE4) became permanently unavailable.

3. The air samples at Site #15 were invalid from 8/20/08 through 9/2/08.

4. The air samples at Site #4 were invalid from 9/23/08 through 9/30/08.

Actions taken

1. Site #47 became permanently unavailable and was replaced in July (Lahti residence, N3). This was documented in the Corrective Action Program by CRDR #3133845 and CRAI #3136750. No further actions are needed.

2. The goat milk sample location at Site #51 (Painter residence, NE4) became permanently unavailable and was deleted.

No replacement location was identified. The 30 day sample location replacement criterion from ODCM requirement 6.1, Action c., was not met since the Land Use Census was used to determine the best possible replacement sample location. The Land Use Census was completed beyond 30 days from the time the current sample location became unavailable.

This was documented in the Corrective Action Program by CRDRs #3133845 and

1. 3161377, and CRAIs #3136750, #3137782, and #3161378.

No further actions are needed.

3. Site #15 was not accessible for the two week period due to insect infestation. This was a one time situation at this one location. No further actions are needed.

4. Power was out at the sample location. The samples were invalidated as the sample volume was indeterminate.

Subsequent sample results the following week were acceptable. No further actions are needed.

5. The air sample pump was seized. The samples were invalidated as the sample volume was indeterminate.

Subsequent sample results the following week were acceptable. No further actions are needed.

6. The liner in Evaporation Pond #2 has deteriorated to the point that it needs repair/replacement.

Evaporation Pond #2 was pumped dry to allow for liner repair/replacement.

The normal sampling regimen will start after it is placed back in service.

5. The air samples at Site #35 were invalid from 10/21/08 through 10/28/08.

6. Evaporation Pond #2 was emptied for liner replacement.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 8

TABLE 2.3 SUMMARIES OF REMP DEVIATIONS/ABNORMAL EVENTS Deviation/Abnormal Event (continued)

7. The TLDs at Site #2 were missing in the 4 th quarter.

8. TLDs at Site #36 were missing in the 1st and 2 nd quarter.

Actions taken (continued)

7. Historically, there has not been a recurring issue with TLDs missing at this location.

TLDs were placed at Site #2 for monitoring the Ist quarter 2009 period. If TLDs are missing when they are changed out for the 1st quarter, consideration will be given to relocation. No other actions are needed.

8. Since these TLDs were missing in two consecutive quarters, they were relocated across the road from their original location.

The TLDs were retrievable in the 3rd and 4 th quarters. No further actions are needed at this time.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 9

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PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 11

3.

Sample Collection Program APS personnel using PVNGS procedures collected all samples.

3.1.

Water Weekly/Monthly/Quarterly samples were collected from the (45 and 85 acre) Reservoirs, Evaporation Pond #1, Evaporation Pond #2, and four (4) residence wells. Samples were collected in one-gallon containers and 500 ml glass bottles. The samples were analyzed for gamma emitting radionuclides and tritium. Resident wells were also analyzed for gross beta.

Quarterly grab samples were collected from onsite wells 34abb and 27ddc. Samples were collected in one-gallon containers and 500 ml glass bottles. Samples were analyzed for gamma emitting radionuclides 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 emitting radionuclides. A monthly composite was analyzed for tritium.

3.2.

Vegetation Vegetation samples were collected monthly, as available, and were analyzed for gamma emitting radionuclides.

3.3.

Milk Goat milk samples were collected monthly, as available, and were analyzed for gamma emitting radionuclides, including low level 1-131.

3.4.

Air 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 emitting radionuclides.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 12

3.5.

Sludge and Sediment Sludge samples were obtained weekly from the WRF waste centrifuge (whenever the plant was operational) and analyzed for gamma emitting radionuclides.

Cooling tower sludge was analyzed for gamma emitting radionuclides prior to disposal in the WRF sludge landfill.

Bottom sediment/sludge samples were obtained from Evaporation Pond #1 and Evaporation Pond #2 and analyzed for gamma emitting radionuclides.

Bottom sediment samples were obtained from Sedimentation Basin #2 and analyzed for gamma emitting radionuclides.

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 counted on a multichannel analyzer equipped with an HPGe detector. The resulting spectrum is analyzed by a computer for specific radionuclides.

4.2.

Airborne Radioiodine The charcoal cartridge is counted on a multichannel analyzer equipped with an HPGe detector. The resulting spectrum is analyzed by a computer for 1-131.

4.3.

Milk 4.3.1.

Gamma Spectroscopy The sample is placed in a plastic marinelli beaker and counted on a multichannel analyzer equipped with an HPGe detector. The resulting spectrum is analyzed by a computer for specific radionuclides.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 13

4.4.

Vegetation 4.4.1.

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 an HPGe detector. The resulting spectrum is analyzed by a computer for specific radionuclides.

4.5.

Sludge/Sediment 4.5.1.

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

4.6.

Water 4.6.1.

Gamma Spectroscopy The sample is placed in a one-liter plastic marinelli beaker and counted on a multichannel analyzer equipped with an HPGe detector. The resulting spectrum is analyzed by a computer for specific radionuclides.

4.6.2.

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 OPERATING REPORT - 2008 14

4.6.3.

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 transferred to a stainless steel planchet. The sample is heated to dryness and counted for gross beta in a gas flow proportional counter.

4.7.

Soil 4.7.1.

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 an HPGe detector. The resulting spectrum is analyzed by a computer for specific radionuclides.

5.

Nuclear Instrumentation 5.1.

Gamma Spectrometer The Canberra Gamma Spectrometer consists of a Canberra System equipped with HPGe 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 to search, identify, and quantify the peaks of interest.

5.2.

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 approximately 40% using a quenched standard.

5.3.

Gas Flow Proportional Counter The Tennelec S5E is a low background gas flow proportional counter for gross beta analysis. 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 approximately 30% for Cs-137.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 15

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 2a 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:

0 0

0 0

0 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 deviations/abnormal 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 RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 16

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 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 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 are 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.

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.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 17

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, an absolute measurement of the disintegration rate is seldom possible, 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 surrounding materials, 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 nuclides. The disintegration constant is one of the basic characteristics of a specific radionuclide and is readily determined, if the half-life is sufficiently short. To ensure the required LLDs are achieved, appropriate decay. correction values are used to account for radioactive decay during transit time and sample processing.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 18

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

AIRBORNE ANALYSIS/

WATER PARTICULATE or MILK VEGETATION NUCLIDE (pCi/liter)

GAS (pCi/m3 )

(pCi/liter)

(pCilkg, wet)

Gross Beta 4

0.01 H-3 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.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 19

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)

H-3 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.

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

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 20

Table 6.3 TYPICAL MDA VALUES ANALYSIS/

AIRBORNE VEGETATION NUCLIDE WATER MILK PARTICULATE or (pCi/kg, wet)

(pCi/liter)

(pCi/liter)

GAS (pCi/m 3)

Gross Beta 2.4 0.003 H-3 268 Mn-54 12 Fe-59 24 Co-58 11 Co-60 13 Zn-65 25 Zr-95 20 Nb-95 12 1-131 11 a 1

0.06 32 Cs-134 12 1

0.04 b 34 Cs-137 13 1

0.05 b 39 Ba-140 39 4

La-140 13 1

NOTES:

a - low level 1-131 is not required since there is no drinking water pathway b - Based on 433 m 3 volume PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 21

7.

Interlaboratory Comparison Program 7.1.

Quality Control Program APS maintains an extensive QA/QC Program to provide assurance 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 to verify analytical precision and sample methodology. Comprehensive data reviews are performed including trending of data where appropriate.

During 2008, APS analyzed the following sample types under the interlaboratory comparison program; S

S 0

0 S

0 Beta/Gamma/ in Air Filter 1-131 in Air Beta in Water Gamma in Water Tritium in Water Gamma in Milk 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.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 22

TABLE 7.1 INTERLABORATORY COMPARISON RESULTS r

1 Sample Analysis Nuclide Known PVNGS sigma Resolution Ratio Accept/Reject Type Type Value Value Error Mixed Water Gamma Ce-141 224 222 12 19 0.99 Accept E6372-111 Cr-51 288 334 44 8

1.16 Accept Cs-134 157 140 8

18 0.89 Accept Cs-137 140 135 8

17 0.96 Accept Co-58 122 115 8

14 0.94 Accept Mn-54 178 176 10 18 0.99 Accept Fe-59 117 127 12 11 1.08 Accept Zn-65 214 208 14 15 0.97 Accept Co-60 156 161 9

18 1.03 Accept 1-131 64.1 86 15 6

1.34 Accept Tritium H-3 11300 9277 140 66 0.82 Accept E6429-111 Gross Beta gbeta 130 137 2

69 1.05 Accept E6430-111 Air Gross Beta gbeta 182 218 2

109 1.20 Accept E6336-111 Iodine Cart 1-131 53.4 46 5

0.86 Accept E6373-111 Iodine Cart 1-131 93.8 95 6

16 1.01 Accept E6338-111 Mixed Gamma Ce-141 76.5 79 4

20 1.03 Accept E6339-111 Cr-51 200 200 17 12 1.00 Accept Cs-134 110 105 7

15 0.95 Accept Cs-137 76.9 85 6

14 1.11 Accept Co-58 84.7 92 6

15 1.09 Accept Mn-54 78.8 92 6

15 1.17 Accept Fe-59 68.5 76 7

11 1.11 Accept Zn-65 151 168 11 15 1.11 Accept Co-60 111 122 6

20 1.10 Accept PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 23

TABLE 7.1 INTERLABORATORY COMPARISON RESULTS r

1 Sample Analysis Nuclide Known PVNGS sigma Resolution Ratio Accept/Reject Type Type Value Value Error Mixed Milk Gamma 1-131 67.9 69 4

17 1.02 Accept E6337-111 Ce-141 161 165 8

21 1.02 Accept Cr-51 421 413 26 16 0.98 Accept Cs-134 232 218 12 18 0.94 Accept Cs-137 162 167 9

19 1.03 Accept Co-58 179 183 10 18 1.03 Accept Mn-54 166 178 10 18 1.07 Accept Fe-59 144 142 9

16 0.98 Accept Zn-65 319 321 17 19 1.01 Accept Co-60 234 233 11 21 0.99 Accept

• calculated from PVNGS value/ 1 sigma error value Acceptance Criteria **

Resolution Ratio

<4 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

• 'From NRC Inspection Manual, Inspection Procedure 84750, "Radioactive Waste Treatment, And Effluent And Environmental Monitoring" PT PVNGS Certified Acceptance Sample Type Analysis Type Nuclide Value Value 1 Limit 2 Results Water Gamma 1-131 25.5 28.1 23.4-33.0 Accept Tritium H-3 1938 2220 1830-2460 Accept Gross Beta 39.4 38.0 25:1-45.5 Accept ERA RAD-75 PT Study Results Filter Gross Beta 44.8 36.2 22.3-52.9 Accept Gamma Am-241 71.8 67.3 39.4-92.3 Accept Cs-134 633.5 623 406-771 Accept Cs-137 858.8 761 572-1000.

Accept Co-60 479.6 425 329-531 Accept Zn-65 538.6 452 313-626 Accept ERA MRAD-009 PT Study Results I The certified values are verified to meet criteria as established by NIST NVLAP in Handbooks 150 and 150-19 and the USEPA in National Standards for Water Proficiency Testing Studies Criteria Document (December 30, 1998).

2 "Acceptance Limits" have been calculated per the requirements of the USEPA in National Standards for Water Proficiency Testing Studies Criteria Document (December 30, 1998).

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 24

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, back scattering, and self-absorption. Random errors are beyond the control of the analyst.

Efforts are made to minimize both systematic and random errors in the data reported. Systematic errors are minimized 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 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 (2a) 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 radionuclides, 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 2008 are presented in the following sections. Assessment of pre-operational and operational data revealed no changes to environmental radiation levels. The only measurable impact on the environment in 2008 was the low level tritium discovered in subsurface water onsite in the RCA in 2006. See Section 2.4for specific information.

8.1.

Air Particulates Weekly gross beta results, in quarterly format, are presented in Tables 8.1 and 8.2. Gross beta activity at indicator locations ranged from 0.016 to 0.067 pCi/mi3. The associated counting error ranged from 0.001 to 0.004 pCi/m 3. Mean quarterly activity is normally calculated using weekly activity over a thirteen (13) week period. Also presented in the tables are the weekly mean values of all the sites as well as the percent relative standard deviation (RSD %) for the data. The findings are consistent with pre-operational baseline and previous operational results. The results are summarized in Table 11.1.

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

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 25

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 radionuclides were observed in any of the samples.

8.4.

Milk Table 8.7 presents gamma isotopic data for the goat milk samples. No gamma emitting radionuclides were observed in any of the samples.

8.5.

Drinking Water Samples were analyzed for gross beta, tritium, and gamma emitting radionuclides. Results of these analyses are presented in Table 8.8. No tritium or gamma emitting radionuclides were detected in any samples. Gross beta activity ranged from less than detectable to a high of 7.8 pCi/liter (Gavette residence, December composite).

8.6.

Ground Water Ground water samples were analyzed for tritium and gamma emitting radionuclides.

Results obtained from the analysis of the samples are presented in Table 8.9.

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

8.7.

Surface Water Surface water samples from the Reservoirs and Evaporation Ponds were analyzed for tritium and gamma emitting radionuclides. The two Reservoirs contain processed sewage water from the City of Phoenix and are approximately 45 and 85 acres in size. The three Evaporation Ponds receive mostly circulating water from main turbine condenser cooling and are about 200-250 acres each. Evaporation Pond #3 was constructed in 2008 to allow for re-lining of the older ponds. Evaporation Pond #2 is being pumped into Evaporation Pond #3 and will be relined first. Results are presented in Table 8.10. 1-131 was observed in the Evaporation Ponds in three (3) of the monthly composite samples (11-19 pCi/liter) and four (4) of the Reservoir monthly composite samples (13 to 31 pCi/liter). 1-131 is a result of radiopharmaceutical 1-131 in the Phoenix sewage effluent.

Tritium was routinely observed in the Evaporation Ponds. The highest concentration in Evaporation Pond #1 was 1111 pCi/liter and the highest concentration in Evaporation Pond #2 was 1028 pCi/liter. Tritium was not identified in the Reservoirs. The tritium PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 26

identified in the Evaporation Ponds has been attributed to permitted plant gaseous effluent releases and secondary plant liquid discharges.

WRF Influent (Phoenix sewage effluent containing radiopharmaceutical 1-131) samples collected by the WRF were analyzed for gamma emitting radionuclides and tritium. The results, presented in Table 8.10, demonstrate that 1-131 was observed routinely. The highest 1-131 concentration was 86 pCi/liter. None of the samples analyzed indicated the presence of tritium.

Table 8.10 also presents gamma spectroscopy and tritium measurements of samples collected from Sedimentation Basin #2. This basin collects rain water from site runoff and was dry for most of the year. No gamma emitting radionuclides were observed in any of the samples. Tritium was detected at very low concentrations in 3 of 7 samples, within the range of 319 to 577 pCi/liter. These values are consistent with historical tritium data and are attributed to plant vent releases during precipitation.

8.8.

Sludge and Sediment 8.8.1.

WRF Centrifuge waste sludge Sludge samples were obtained from the WRF centrifuge and analyzed by gamma spectroscopy. 1-131 activity in the 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-one (51) samples ranging from 180 to 2249 pCi/kg. The highest value corresponded to the dates associated with the highest weekly 1-131 activity in the source water supply (WRF Influent).

In-ill was also identified in the sludge in 12 of the 51 samples. The highest concentration was 91 pCi/kg. It was previously established that In-111 is also used in the Phoenix area as a radiopharmaceutical. The frequency of In-111 detection has increased from the 2007 calendar year, when only 4 samples indicated In-Ill activity.

Results for WRF centrifuge waste sludge can be found in Table 8.11.

8.8.2.

Evaporation Ponds #1 and #2 sediment A set of seven (7) Evaporation Pond sediment samples indicated low levels of Cs-137 ranging from <MDA to 79 pCi/kg. One sample from Evaporation Pond #1 indicated I-131 (non-licensed radioactive material) at a concentration of 18 pCi/kg. These results are consistent with previous samples. Sample results can be found in Table 8.11.

8.8.3.

Cooling Tower sludge Sludge/sediment originating from the Unit 3 Cooling Towers and/or Circulating Water canals was disposed of in the WRF sludge landfill during 2008. Sample results can be found in Table 8.11.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 27

8.8.4.

Sedimentation Basin #2 sediment Sedimentation Basin #2 receives storm runoff and provides an onsite collection area.

Two (2) bottom sediment samples were collected and analyzed for gamma emitting radionuclides. Cs-137 was detected in both samples at 45 and 47 pCi/kg. This is below the pre-operational onsite average soil Cs-137 concentration of 238 pCi/kg and consistent with historical data. Refer to Table 8.11.

8.9.

Data Trends Figures 8.1-8.5 present data in graphical format. Historical data are displayed for comparison where practical.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 28

TABLE 8.1 PARTICULATE GROSS BETA IN AIR 1st - 2nd QUARTER START Week #

DATE ODCM required samples denoted by

• units are pCi/m 3 1st Qarter

~.~

Site Site Site Site Site Site Site Site 4

6A*

7A 14A*

15*

17A 21 29*

STOP DATE Site Site 35 40*

Mean RSD

(%)

1 2

3 4

5 6

7 8

9 10 11 12 13 26-Dec-07 2-Jan-08 0.023 2-Jan-08 8-Jan-08 0.025 8-Jan-08 15-Jan-08 0.025 15-Jan-08 22-Jan-08 0.033 22-Jan-08 29-Jan-08 0.023 29-Jan-08 5-Feb-08 0.018 5-Feb-08 12-Feb-08 0.029 12-Feb-08 20-Feb-08 0.031 20-Feb-08 26-Feb-08 0.017 26-Feb-08 4-Mar-08 0.026 4-Mar-08 11-Mar-08 0.029 11-Mar-08 18-Mar-08 0.031 18-Mar-08 24-Mar-08 0.036 0.026 0.026 0.026 0.025 0.025 0.024 0.025 0.026 0.024 0.025 0.028 0.026 0.025 0.027 0.030 0.027 0.025 0.027 0.025 0.026 0.026 0.039 0.036 0.033 0.035 0.032 0.034 0.032 0.026 0.025 0.023 0.025 0.026 0.026 0.026 0.020 0.018 0.018 0.019 0.018 0.018 0.017 0.033 0.030 0.027 0.030 0.027 0.029 0.031 0.035 0.031 0.030 0.034 0.030 0.030 0.033 0.020 0.021 0.017 0.018 0.018 0.017 0.017 0.027 0.027 0.024 0.025 0.024 0.021 0.026 0.032 0.029 0.027 0.032 0.025 0.027 0.028 0.031 0.029 0.028 0.032 0.030 0.028 0.029 0.038 0.035 0.033 0.037 0.033 0.033 0.033 0.023 0.024 0.025 0.026 0.026 0.026 0.024 0.025 0.026 0.033 0.034 0.034 0.024 0.024 0.025 0.018 0.018 0.018 0.029 0.028 0.029 0.032 0.033 0.032 0.019 0.017 0.018 0.022 0.023 0.025 0.026 0.027 0.028 0.029 0.031 0.030 0.030 0.033 0.034 4.7 4.4 6.5 6.3 5.0 4.3 6.2 5.6 8.0 8.4 8.3 4.7 7.0 Mean START Week #

DATE 0.027 0.029 0.028 0.026 0.028 0.026 0.026 0.027 STOP Site Site Site Site Site Site Site Site DATE 4

6A*

7A 14A*

15*

17A 21 29*

0.026 0.026 0.027 4.5 Site Site RSD 35 40*

Mean

(%)

14 15 16 17 18 19 20 21 22 23 24 25 26 24-Mar-08 1 -Apr-08 0.025 1-Apr-08 8-Apr-08 0.026 8-Apr-08 15-Apr-08 0.027 15-Apr-08 22-Apr-08 0.036 22-Apr-08 29-Apr-08 0.038 29-Apr-08 6-May-08 0.030 6-May-08 13-May-08 0.037 13-May-08 20-May-08 0.028 20-May-08 27-May-08 0.025 27-May-08 4-Jun-08 0.032 4-Jun-08 10-Jun-08 0.031 10-Jun-08 17-Jun-08 0.037 17-Jun-08 24-Jun-08 0.037 0.030 0.026 0.027 0.028 0.029 0.026 0.027 0.028 0.030 0.028 0.030 0.028 0.029 0.030 0.028 0.028 0.027 0.027 0.027 0.025 0.028 0.038 0.037 0.037 0.037 0.037 0.035 0.036 0.038 0.039 0.036 0.039 0.038 0.036 0.041 0.034 0.034 0.032 0.032 0.029 0.030 0.032 0.039 0.040 0.037 0.040 0.037 0.040 0.036 0.032 0.029 0.025 0.028 0.028 0.029 0.027 0.028 0.021 0.023 0.024 0.022 0.021 0.022 0.039 0.036 0.032 0.034 0.034 0.034 0.034 0.029 0.030 0.030 0.033 0.032 0.031 0.029 0.040 0.040 0.037 0.039 0.037 0.037 0.039 0.042 0.039 0.038 0.041 0.039 0.041 0.039 0.028 0.028 0.027 0.030 0.028 0.029 0.029 0.026 0.027 0.038 0.038 0.037 0.040 0.036 0.038 0.032 0.031 0.032 0.037 0.038 0.038 0.028 0.026 0.028 0.025 0.023 0.023 0.033 0.035 0.034 0.030 0.031 0.031 0.040 0.039 0.039 0.042 0.039 0.040 5.5 4.7 4.2 2.7 4.5 5.2 4.0 6.7 9.3 6.0 4.1 3.5 4.3 Mean 0.031 0.034 0.033 0.031 0.033 0.032 0.032 0.032 0.033 0.032 0.033 2.8 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 29

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

• units are pCi/m3

-" )]:* -

3*

3,

iQuarte i";.:

Site Site Site Site Site Site Site Site Site RSD 35 40*

Mean

(%)

Week#

DATE DATE 4

6A*

7A 14A*

15*

17A 21 29*

27 28 29 30 31 32 33 34 35 36 37 38 39 24-Jun-08 1-Jul-08 8-Jul-08 16-Jul-08 22-Jul-08 29-Jul-08 5-Aug-08 12-Aug-08 20-Aug-08 26-Aug-08 2-Sep-08 9-Sep-08 17-Sep-08 1 -Jul-08 8-Jul-08 16-Jul-08 22-Jul-08 29-Jul-08 5-Aug-08 12-Aug-08 20-Aug-08 26-Aug-08 2-Sep-08 9-Sep-08 17-Sep-08 23-Sep-08 0.038 0.032 0.029 0.037 0.033 0.033 0.040 0.037 0.034 0.023 0.045 0.031 0.040 0.041 0.034 0.028 0.037 0.034 0.031 0.044 0.040 0.035 0.022 0.046 0.038 0.040 0.039 0.038 0.034 0.035 0.027 0.027 0.037 0.036 0.029 0.031 0.034 0.032 0.036 0.037 0.036 0.039 0.035 0.031 0.021 0.023 0.046 0.046 0.035 0.034 0.039 0.042 0.043 0.036 0.029 0.036 0.034 0.033 0.039 0.039 invalid a invalid a 0.046 0.031 0.041 0.038 0.039 0.039 0.035 0.034 0.033 0.027 0.027 0.025 0.038 0.033 0.037 0.035 0.031 0.035 0.034 0.032 0.033 0.037 0.036 0.035 0.035 0.037 0.036 0.034 0.035 0.035 0.020 0.018 0.021 0.046 0.043 0.041 0.035 0.031 0.030 0.040 0.039 0.041 0.039 0.036 0.029 0.039 0.038 0.036 0.042 0.042 0.034 0.024 0.046 0.033 0.041 0.037 0.039 4.4 0.036 0.035 3.9 0.031 0.028 6.0 0.037 0.037 4.3 0.034 0.033 7.6 0.033 0.033 4.1 0.041 0.039 7.7 0.035 0.038 6.2 0.035 0.034 3.8 0.023 0.022 8.6 0.043 0.045 4.0 0.036 0.033 7.9 0.042 0.041 2.7 Mean START STOP Week #

DATE DATE 0.035 0.036 0.034 0.0354 4th Quari Site Site Site Site 4

6A*

7A 14A*

).037 0.035 0.033 0.034 0.037 "er.

Site Site Site Site Site 15*

17A 21 29*

35 0.036 0.035 3.4 Site RSD 40*

Mean

(%)

40 41 42 43 44 45 46 47 48 49 50 51 52 53 23-Sep-08 30-Sep-08 30-Sep-08 7-Oct-08 7-Oct-08 14-Oct-08 14-Oct-08 21-Oct-08 21-Oct-08 28-Oct-08 28-Oct-08 4-Nov-08 4-Nov-08 12-Nov-08 12-Nov-08 18-Nov-08 18-Nov-08 24-Nov-08 24-Nov-08 2-Dec-08 2-Dec-08 10-Dec-08 10-Dec-08 16-Dec-08 16-Dec-08 22-Dec-08 22-Dec-08 29-Dec-08 invalid b 0.040 0.030 0.048 0.044 0.055 0.024 0.038 0.065 0.052 0.053 0.037 0.021 0.020 0.042 0.040 0.041 0.049 0.047 0.057 0.027 0.041 0.073 0.052 0.053 0.037 0.022 0.023 0.040 0.040 0.040 0.039 0.041 0.036 0.052 0.049 0.045 0.039 0.058 0.054 0.023 0.023 0.035 0.035 0.067 0.063 0.046 0.042 0.049 0.041 0.033 0.031 0.019 0.016 0.021 0.020 0.041 0.039 0.039 0.046 0.044 0.063 0.024 0.038 0.062 0.049 0.046 0.033 0.019 0.020 0.039 0.040 0.042 0.039 0.037 0.041 0.041 0.039 0.043 0.048 0.051 0.051 0.042 0.043 0.043 0.057 0.058 0.061 0.022 0.023 0.023 0.035 0.035 0.035 0.065 0.060 0.056 0.046 0.047 0.045 0.046 0.049 0.047 0.034 0.035 0.034 0.020 0.016 0.019 0.023 0.019 0.019 0.040 0.039 0.042 0.048 invalid 0.055 0.023 0.036 0.066 0.048 0.046 0.034 0.018 0.019 0.033 0.040 6.8 0.042 0.040 3.4 0.038 0.039 9.7 0.048 0.049 3.7 0.042 0.043 5.1 0.059 0.058 4.8 0.022 0.023 6.1 0.037 0.037 5.5 0.052 0.063 9.4 0.044 0.047 6.9 0.048 0.048 7.4 0.034 0.034 5.3 0.017 0.019 10.7 0.020 0.020 7.4 Mean Annual Average 0.041 0.043 0.041 0.038 0.040 0.040 0.039 0.040 0.040 0.038 0.040 3.7 0.034 0.033 0.034 2.9 0.033 0.036 0.034 0.033 0.035 0.033 0.033 0.033 a Sample not accessible due to insect infestation. b Power was out at sample location, sample invalid. C Sample pump was seized, sample invalid.

PYNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT -2008 30

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

• units are pCi/m3 QUARTER ENDPOINT Site 4

Site 6A*

Site Site 7A 14A*

Site 15*

Site 17A Site Site Site Site 21 29*

35 40*

NUCLIDE 24-Mar-08 24-Jun-08 30-Sep-08 29-Dec-08 Cs-134 Cs-137 Cs-134 Cs-137 Cs-134 Cs-137 Cs-134 Cs-137

<0.0009

<0.0037

<0.0039

<0.0029

<0.0042

<0.0048

<0.0046

<0.0011

<0.0029

<0.0052

<0.0035

<0.0011

<0.0023

<0.0045

<0.0042

<0.0039

<0.0009

<0.0051

<0.0029

<0.0042

<0.0032

<0.0036

<0.0029

<0.0036

<0.0034

<0.0041

<0.0030

<0.0042

<0.0038

<0.0037

<0.0034

<0.0029

<0.0038

<0.0043

<0.0024

<0.0048

<0.0024

<0.0044

<0.0015

<0.0011

<0.0045

<0.0039

<0.0041

<0.0036

<0.0035

<0.0034

<0.0030

<0.0043

<0.0042

<0.0047

<0.0040

<0.0041

<0.0035

<0.0031

<0.0024

<0.0042

<0.0029

<0.0044

<0.0035

<0.0037

<0.0022

<0.0039

<0.0038

<0.0038

<0.0029

<0.0044

<0.0038

<0.0053

<0.0032

<0.0039

<0.0050

<0.0040

<0.0029

<0.0049

<0.0029

<0.0042

<0.0022

<0.0039

<0.0038

<0.0053 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 31

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

• START Week #

DATE STOP DATE Site Site 4

6A*

units are pCirM 3

1st*arter~

Site Site Site Site 7A 14A*

15*

17A Site Site Site Site 21 29*

35 40*

1 2

3 4

5 6

7 8

9 10 11 12 13 26-Dec-07 2-Jan-08 8-Jan-08 15-Jan-08 22-Jan-08 29-Jan-08 5-Feb-08 12-Feb-08 20-Feb-08 26-Feb-08 4-Mar-08 11-Mar-08 18-Mar-08 2-Jan-08 8-Jan-08 15-Jan-08 22-Jan-08 29-Jan-08 5-Feb-08 12-Feb-08 20-Feb-08 26-Feb-08 4-Mar-08 11-Mar-08 18-Mar-08 24-Mar-08

<0.068

<0.050

<0.044

<0.054

<0.042

<0.049

<0.032

<0.052

<0.070

<0.037

<0.037

<0.068

<0.068

<0.065

<0.068

<0.038

<0.050

<0.069

<0.035

<0.038

<0.059

<0.068

<0.059

<0.066

<0.048

<0.039

<0.047

<0.060

<0.066

<0.048

<0.040

<0.042

<0.059

<0.050

<0.069

<0.039

<0.045

<0.038

<0.051

<0.042

<0.062

<0.040

<0.068

<0.069

<0.065

<0.045

<0.066

<0.035

<0.048

<0.056

<0.063

<0.057

<0.045

<0.052

<0.043

<0.014

<0.030

<0.047

<0.051

<0.056

<0.060

<0.041

<0.068

<0.047

<0.049

<0.040

<0.038

<0.035

<0.043

<0.042

<0.036

<0.047

<0.055

<0.040

<0.052

<0.052

<0.064

<0.054

<0.064

<0.047

<0.049

<0.042

<0.051

<0.048

<0.048

<0.042

<0.045

<0.046

<0.038

<0.047

<0.042

<0.042

<0.048

<0.052

<0.052

<0.052

<0.068

<0.051

<0.040

<0.061

<0.068

<0.069

<0.069

<0.068

<0.069

<0.069

<0.045

<0.034

<0.067

<0.053

<0.065

<0.041

<0.038

<0.039

<0.060

<0.035

<0.047

<0.043

<0.063

<0.068

<0.070

<0.063

<0.063

<0.048

<0.062

<0.066

<0.050

<0.052

<0.053

<0.053 START STOP Site Week #

DATE DATE 4

Site Site Site Site 6A*

7A 14A*

15*

Site 17A Site Site Site Site 21 29*

35 40*

14 15 16 17 18 19 20 21 22 23 24 25 26 24-Mar-08 1-Apr-08 8-Apr-08 15-Apr-08 22-Apr-08 29-Apr-08 6-May-08 13-May-08 20-May-08 27-May-08 4-Jun-08 10-Jun-08 17-Jun-08 1-Apr-08 8-Apr-08 15-Apr-08 22-Apr-08 29-Apr-08 6-May-08 13-May-08 20-May-08 27-May-08 4-Jun-08 10-Jun-08 17-Jun-08 24-Jun-08

<0.044

<0.062

<0.055

<0.047

<0.064

<0.049

<0.043

<0.066

<0.039

<0.058

<0.052

<0.048

<0.042

<0.049

<0.030

<0.038

<0.014

<0.053

<0.036

<0.062

<0.049

<0.034

<0.067

<0.047

<0.036

<0.056

<0.066

<0.055

<0.059

<0.049

<0.055

<0.059

<0.057

<0.062

<0.063

<0.069

<0.054

<0.063

<0.058

<0.063

<0.058

<0.030

<0.049

<0.054

<0.067

<0.064

<0.063

<0.065

<0.053

<0.058

<0.049

<0.015

<0.030

<0.047

<0.061

<0.040

<0.042

<0.057

<0.069

<0.046

<0.060

<0.046

<0.054

<0.054

<0.049

<0.034

<0.034

<0.056

<0.043

<0.054

<0.066

<0.047

<0.045

<0.055 <0.055

<0.048

<0.047

<0.055

<0.068

<0.068

<0.039

<0.070

<0.055

<0.060

<0.050

<0.034

<0.050

<0.052

<0.066

<0.060

<0.045

<0.045

<0.053

<0.066

<0.060

<0.047

<0.059

<0.037

<0.048

<0.055

<0.057

<0.039

<0.057

<0.057

<0.063

<0.057

<0.038

<0.053

<0.040

<0.062

<0.049

<0.054

<0.067

<0.065

<0.063

<0.044

<0.061

<0.066

<0.053

<0.067

<0.014

<0.047

<0.069

<0.047

<0.060

<0.066

<0.039

<0.059

<0.060

<0.067 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 32

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

• units are pCi/m3 3rd Quarter~

Site Site Site Site Site Site Site Site Site 6A*

7A 14A*

15*

17A 21 29*

35 40*

START Week #

DATE STOP DATE Site 4

27 28 29 30 31 32 33 34 35 36 37 38 39 24-Jun-08 1-Jul-08 8-Jul-08 16-Jul-08 22-Jul-08 29-Jul-08 5-Aug-08 12-Aug-08 20-Aug-08 26-Aug-08 2-Sep-08 9-Sep-08 17-Sep-08 1-Jul-08 8-Jul-08 16-Jul-08 22-Jul-08 29-Jul-08 5-Aug-08 12-Aug-08 20-Aug-08 26-Aug-08 2-Sep-08 9-Sep-08 17-Sep-08 23-Sep-08

<0.064

<0.050

<0.043

<0.068

<0.065

<0.064

<0.063

<0.046

<0.060

<0.037

<0.052

<0.053

<0.015

<0.063

<0.047

<0.037

<0.034

<0.043

<0.044

<0.048

<0.043

<0.036

<0.069

<0.069

<0.070

<0.065

<0.064

<0.050

<0.070

<0.014

<0.049

<0.069

<0.045

<0.054

<0.039

<0.049

<0.029

<0.066

<0.050

<0.069

<0.068

<0.036

<0.063

<0.034

<0.063

<0.060

<0.068

<0.032

<0.057

<0.062

<0.060

<0.053

<0.068

<0.055

<0.067

<0.055

<0.064

<0.066

<0.057

<0.035

<0.051

<0.044

<0.051

<0.063

<0.064

<0.049

<0.031

<0.065

<0.046

<0.068

<0.038

<0.064

<0.067

<0.060

<0.066

<0.059

<0.069

<0.065

<0.039

<0.058

<0.051

<0.040

<0.039

<0.050

<0.070

<0.065

<0.040

<0.052

<0.037

<0.054

<0.065

<0.068

<0.041

<0.057

<0.056

<0.053

<0.029

<0.030

<0.041

<0.047 invalid

<0.062

<0.069

<0.067

<0.067

<0.068 invalid

<0.060

<0.070

<0.065

<0.047

<0.061

<0.056

<0.043

<0.042

<0.043

<0.049

<0.013

<0.051

<0.054

<0.039

<0.047

<0.036

<0.048

<0.062

<0.063

<0.061

<0.070

<0.069

<0.068 START Week #

DATE STOP DATE Site 4

I 4th Quarter Site Site Site 6A*

7A 14A*

Site Site 15*

17A Site Site Site Site 21 29*

35 40*

40 41 42 43 44 45 46 47 48 49 50 51 52 53 23-Sep-08 30-Sep-08 7-Oct-08 14-Oct-08 21-Oct-08 28-Oct-08 4-Nov-08 12-Nov-08 18-Nov-08 24-Nov-08 2-Dec-08 10-Dec-08 16-Dec-08 22-Dec-08 30-Sep-08 7-Oct-08 14-Oct-08 21-Oct-08 28-Oct-08 4-Nov-08 12-Nov-08 18-Nov-08 24-Nov-08 2-Dec-08 10-Dec-08 16-Dec-08 22-Dec-08 29-Dec-08 invalid b

<0.038

<0.035

<0.070

<0.070

<0.048

<0.058

<0.043

<0.065

<0.0 11

<0.052

<0.067

<0.069

<0.052

<0.037

<0.060

<0.047

<0.038

<0.065

<0.038

<0.068

<0.045

<0.064

<0.064

<0.061

<0.058

<0.066

<0.065

<0.052

<0.066

<0.046

<0.066

<0.052

<0.046

<0.032

<0.066

<0.063

<0.066

<0.063

<0.067

<0.068

<0.064

<0.046

<0.055

<0.040

<0.051

<0.046

<0.066

<0.065

<0.065

<0.068

<0.051

<0.060

<0.034

<0.052

<0.043

<0.060

<0.037

<0.037

<0.063

<0.056

<0.037

<0.055

<0.062

<0.054

<0.054

<0.069

<0.065

<0.052

<0.045

<0.063

<0.053

<0.046

<0.070

<0.051

<0.049

<0.054

<0.055

<0.038

<0.056

<0.051

<0.050

<0.060

<0.061 invalid'

<0.063

<0.037

<0.038

<0.060

<0.065

<0.069

<0.067

<0.040

<0.052

<0.040

<0.032

<0.032

<0.047

<0.070

<0.043

<0.069

<0.016

<0.062

<0.067

<0.054

<0.065

<0.063

<0.068

<0.047

<0.067

<0.066

<0.039

<0.051

<0.061

<0.012

<0.052

<0.032

<0.061

<0.046

<0.039

<0.052

<0.039

<0.046

<0.046

<0.070

<0.060

<0.069

<0.060

<0.068

<0.066

<0.060

<0.062

<0.066

<0.041

<0.052

<0.034

<0.051

<0.029

<0.068

<0.033 a Sample not accessible due to insect infestation. b Power was out at sample location, sample invalid. ' Sample pump was seized, sample invalid.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 33

TABLE 8.6 VEGETATION ODCM required samples denoted by

• units are pCi/kg, wet

<60

<60

<80 1-131 Cs-134 Cs-137 LOCATION TYPE DATE COLLECTED WRIGHT RESIDENCE (Site #52)*

NO SAMPLES AVAILABLE DUNCAN FAMILY FARMS (Site #62)*

green cabbage red cabbage green cabbage red cabbage savoy cabbage green cabbage green cabbage green cabbage green cabbage green cabbage green cabbage red cabbage 11-Jan-08 11-Jan-08 15-Feb-08 15-Feb-08 15-Feb-08 14-Mar-08 11 -Apr-08 16-May-08 17-Oct-08 14-Nov-08 12-Dec-08 12-Dec-08

<58

<60

<53

<55

<54

<38

<37

<41

<30

<29

<33

<38

<56

<54

<47

<46

<57

<45

<49

<38

<30

<36

<43

<26

<79

<69

<63

<67

<57

<64

<60

<45

<44

<36

<30

<44 GARDEN OF EATIN' RESIDENCE (Site #47)*

LAHTI RESIDENCE NO SAMPLES AVAILABLE (Lahti replaced Garden of Eatin' in July)

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 34

TABLE 8.7 MILK ODCM required samples denoted by

• units are pCi/liter SAMPLE LOCATION DATE COLLECTED

<1

<15

<18

<60

<15 1-131 Cs-134 Cs-137 Ba-140 La-140 PAINTER GOATS (Site #51)*

NO SAMPLES AVAILABLE MARTIN GOATS (Site #53)*

26-Feb-08 21-Mar-08 18-Apr-08 23-May-08 20-Jun-08 25-Jul-08 22-Aug-08 26-Sep-08 24-Oct-08 21-Nov-08 18-Dec-08

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<3

<3

<3

<3

<3

<3

<3

<3

<3

<3

<3

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1 HERNANDEZ GOATS (Site #54) 11-Jan-08 15-Feb-08 14-Mar-08 11 -Apr-08 16-May-08 11-Jul-08 15-Aug-08 19-Sep-08 14-Nov-08 12-Dec-08

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1

<3

<3

<3

<3

<3

<3

<3

<3

<3

<3

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1 Site #51 was no longer available as of March. The Land Use replacement, so the location was deleted effective 7-11-08.

Census did not identify a PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 35

TABLE 8.8 DRINKING WATER ODCM required samples denoted by

• units are pCi/liter

<2000 SAMPLE MONTH

<15

<15

<30

<15

<30

<15

<30

<15

<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 H-3 Gross Beta BERRYMAN RESIDENCE (SITE #48)*

29-Jan-08

<13

<13

<24

<13

<30

<12

<23

<12

<12 26-Feb-08

<14

<14

<30

<14

<27

<15

<22

<13

<13 24-Mar-08

<12

<12

<20

<13

<28

<11

<21

<9

<10 29-Apr-08

<13

<11

<25

<14

<30

<11

<22

<11

<11 27-May-08

<13

<12

<27

<13

<29

<14

<21

<13

<12 24-Jun-08

<10

<9

<17

<10

<21

<9

<16

<8

<9 29-Jul-08

<13

<13

<25

<14

<27

<13

<22

<12

<11 26-Aug-08

<10

<12

<30

<15

<29

<13

<20

<12

<11 30-Sep-08

<9

<10

<21

<11

<26

<12

<21

<12

<9 28-Oct-08

<13

<15

<25

<15

<26

<10

<24

<13

<12 24-Nov-08

<11

<10

<17

<12

<23

<12

<18

<9

<9 29-Dec-08

<11

<9

<22

<11

<25

<9

<18

<9

<9

<14

<41

<13

<46

<11

<37

<10

<36

<14

<47

<10

<32

<14

<37

<13

<47

<11

<39

<14

<44

<10

<37

<11

<36

<13 4.5 +/- 1.7

<14 i

<3.3

<13

<275

<3.1

<12 4.04 1.9

<13 L 4.4 1.8

<15

<282

<3.0

<13

<2.9

<9 4.5 +/- 2.0

<13

<275 6.4 +/- 1.5

<15 3.0 +/- 1.8

<15 3.6 +/- 1.9

<14

<273 7.1 +/- 1.8 GAVETTE RESIDENCE (SITE #55) 29-Jan-08

<12

<14

<28

<15

<28

<13

<27

<11

<12 26-Feb-08

<13

<14

<27

<13

<29

<13

<23

<12

<12 24-Mar-08

<12

<9

<25

<12

<26

<11

<21

<10

<8 29-Apr-08

<13

<12

<23

<15

<27

<13

<24

<13

<11 27-May-08

<10

<11

<24

<15

<26

<12

<20

<12

<11 24-Jun-08

<13

<14

<22

<12

<27

<14

<21

<13

<13 29-Jul-08

<14

<15

<28

<15

<29

<13

<22

<14

<10 26-Aug-08

<10

<12

<16

<13

<25

<11

<17

<10

<10 30-Sep-08

<12

<13

<25

<12

<30

<13

<18

<12

<11 28-Oct-08

<12

<13

<25

<15

<29

<13

<25

<10

<10 24-Nov-08

<10

<10

<22

<10

<22

<10

<17

<9

<8 29-Dec-08

<13

<12

<21

<12

<23

<12

<22

<11

<12

<14

<42

<15

<45

<11

<32

<13

<37

<13

<41

<14

<50

<13

<43

<10

<34

<14

<47

<14

<45

<10

<37

<12

<41

<15 5.3 +/- 1.5

<15

<2.5

<15

<285

<2.5

<11 3.9 +/- 1.6

<12 L 3.8 +/- 1.5

<14

<279

<2.4

<13 7]

4.4 +/- 1.5

<14 L J

4.7 +/- 1.5

<12

<272 5.8 +/-- 1.2

<15 3.6 +/- 1.6

<15 3.5 +/- 1.6

<15

<273 7.8 +/- 1.6 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 36

TABLE 8.8 DRINKING WATER ODCM required samples denoted by

• units are pCi/liter SAMPLE LOCATION

<2000 MONTH

<15

<15

<30

<15

<30

<15

<30

<15

<15

<18

<60

<15 QTRLY

<4.0 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 H-3 Gross Beta 4.

WIRTH RESIDENCE (SITE #46)*

29-Jan-08

<12

<13

<28

<14

<30

<13

<24

<13

<12

<13

<46

<13 3.6+/- 1.4 26-Feb-08

<11

<11

<20

<12

<30

<14

<24

<13

<13

<13

<52

<14 2.6+/- 1.6 24-Mar-08

<13

<12

<25

<15

<30

<13

<25

<13

<10

<12

<40

<14

<285

<2.6 29-Apr-08

<11

<14

<21

<13

<30

<14

<16

<13

<12

<14

<44

<13 1,,

j2.5 +/-1.5 27-May-08

<13

<11

<25

<14

<29

<13

<24

<13

<10

<11

<45

<15 L3.0 0+/- 1.4 24-Jun-08

<12

<10

<25

<14

<30

<12

<22

<13

<10

<14

<40

<13

<281 3.4+/- 1.6 29-Jul-08

<12

<11

<24

<13

<27

<12

<21

<10

<11

<13

<38

<15 3.6+/- 1.5 26-Aug-08

<13

<13

<27

<12

<29

<15

<21

<12

<12

<15

<43

<12 L 4.7+/- 1.5 30-Sep-08

<11

<11

<23

<12

<23

<13

<21

<12

<9

<11

<42

<15

<274 5.6+/- 1.3 28-Oct-08

<13

<12

<22

<14

<29

<14

<23

<11

<13

<15

<47

<14 [7 4.6+/- 1.6 24-Nov-08

<13

<13

<24

<14

<27

<13

<21

<15

<13

<12

<58

<13

-1

<2.4 29-Dec-08

<15

<14

<23

<11

<28

<10

<20

<13

<13

<12

<43

<13

<274 4.8+/- 1.4 4.

SANDOVAL RESIDENCE (SITE #49)

• 29-Jan-08

<12

<11

<24

<14

<20

<11

<20

<11

<11

<12

<33

<15 v",

-"i

<1.9 26-Feb-08

<11

<10

<24

<11

<27

<12

<22

<12

<11

<12

<44

<15 L

<2.4 24-Mar-08

<12

<13

<27

<13

<30

<13

<19

<12

<11

<14

<49

<13

<284

<2.4 29-Apr-08

<9

<10

<19

<13

<20

<10

<19

<9

<9

<11

<29

<15

<2.1 27-May-08

<13

<14

<28

<13

<30

<15

<24

<15

<13

<14

<51

<14

<2.0 24-Jun-08

<11

<11

<22

<15

<22

<12

<19

<12

<9

<12

<40

<13

<279

<2.3 29-Jul-08

<14

<14

<30

<14

<25

<15

<23

<14

<12

<14

<48

<13

<2.1 26-Aug-08

<12

<11

<30

<13

<24

<12

<20

<13

<12

<13

<39

<12

<2.0 30-Sep-08

<10

<11

<17

<14

<21

<12

<16

<9

<8

<11

<39

<15

<271 4.7+/- 1.1 28-Oct-08

<13

<13

<29

<15

<29

<15

<26

<13

<11

<15

<44

<14

<2.2 24-Nov-08

<13

<13

<29

<15

<26

<14

<21

<15

<12

<14

<50

<12

<2.2 29-Dec-08

<11

<11

<21

<15

<26

<12

<19

<11

<9

<10

<35

<12

<272 3.6+/- 1.3 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 37

TABLE 8.9 GROUND WATER ODCM required samples denoted by

• units are pCi/liter SAMPLE DATE

<15

<15

<30

<15

<30

<15

<30

<15

<15

<18 LOCATION COLLECTED Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137

<60

<15

<2000 Ba-140 La-140 H-3 WELL 29-Jan-08

<12

<13

<25

<13

<29

<15

<20

<14

<12

<12

<45

<15

<230 27ddc 29-Apr-08

<14

<12

<26

<14

<27

<15

<22

<13

<11

<14

<43

<14

<277 (Site #57)*

30-Jul-08

<14

<15

<23

<14

<26

<13

<19

<11

<10

<14

<42

<11

<283 28-Oct-08

<9

<10

<25

<13

<28

<11

<19

<10

<10

<12

<51

<15

<282 WELL 34abb (Site #58)*

29-Jan-08

<10

<10

<19

<12

<26

<11

<16

<9

<9

<10 29-Apr-08

<11

<11

<26

<15

<29

<14

<22

<14

<11

<13 30-Jul-08

<13

<11

<23

<13

<28

<14

<25

<13

<12

<12 28-Oct-08

<9

<10

<21

<10

<28

<11

<18

<11

<10

<10

<36

<15

<281

<44

<13

<282

<42

<15

<283

<39

<15

<279 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 38

TABLE 8.10 SURFACE WATER ODCM required samples denoted by

• units are pCi/liter SAMPLE LOCATION MONTH

<15

<15

<30

<15

<30

<15

<30

<15

<15

<18

<60

<15 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

<3000 H-3 45 ACRE RESERVOIR (Site #61)

• 29-Jan-08

<8

<11

<20

<11

<21

<9

<16 26-Feb-08

<14

<12

<23

<14

<27

<13

<23 24-Mar-08

<15

<12

<26

<8

<30

<12

<24 29-Apr-08

<12

<11

<23

<13

<26

<12

<20 27-May-08

<13

<11

<23

<13

<25

<13

<23 24-Jun-08

<11

<10

<23

<11

<25

<11

<20 22-Jul-08

<12

<11

<27

<12

<26

<12

<18 28-Oct-08

<11

<12

<18

<13

<18

<9

<17 13 +/- 8 31 +/- 14 14 +/-10

<14 15 +/- 14

<14

<15

<10

<9

<13

<36

<11

<12

<41

<12

<15

<45

<11

<12

<33

<12

<15

<46

<9

<12

<38

<12

<12

<39

<10

<8

<33

<15

<13

<13

<15

<14

<15

<14

<15

<279 29-Apr-08

<8

<9

<17

<8

<15

<8

<13

<9

<7

<7

<27

<11 85ACRE 27-May-08

<14

<12

<24

<14

<30

<11

<24

<12

<11

<13

<42

<11 RESERVOIR 24-Jun-08

<12

<11

<22

<14

<23

<12

<17

<11

<11

<13

<33

<15 (Site #60)*

22-Jul-08 1<12

<11

<21

<12

<30

<10

<20

<12

<11

<12

<32

<10 28-Oct-08

<12

<10

<21

<12

<25

<10

<19

<12

<9

<12

<40

<15

<283

<279 EVAP POND 1 (Site #59)

• 29-Jan-08

<11

<11

<22

<11

<30

<10

<20 26-Feb-08

<14

<12

<29

<14

<30

<13

<22 24-Mar-08

<12

<12

<29

<15

<26

<12

<20 29-Apr-08

<12

<13

<26

<15

<28

<12

<22 27-May-08

<11

<13

<21

<15

<26

<11

<20 24-Jun-08

<12

<13

<25

<11

<30

<11

<21 29-Jul-08

<12

<11

<26

<14

<30

<11

<19 26-Aug-08

<11

<10

<29

<12

<29

<12

<22 30-Sep-08

<9

<10

<23

<14

<30

<11

<16 28-Oct-08

<9

<10

<24

<11

<29

<10

<21 24-Nov-08

<12

<11

<29

<11

<30

<12

<21 29-Dec-08

<13

<11

<26

<13

<28

<13

<21

<10 15 + 11 19 + 10

<15

<12

<13

<13

<10

<10

<9 11 + 11

<15

<9

<11

<34

<11

<15

<45

<8

<13

<38

<12

<15

<44

<10

<12

<39

<10

<14

<32

<11

<13

<40

<11

<14

<37

<10

<12

<31

<9

<12

<32

<12

<14

<36

<11

<14

<43

<12

<11

<13

)13 1 184

<13

<14

<14 10+186

< 13

<11 948+ 174

<10

<12 1111 + 168

.9 EVAP POND 2 (Site #63)

• 29-Jan-08

<14

<12

<30

<15

<30

<13

<24 26-Feb-08

<12

<12

<28

<12

<29

<12

<22 24-Mar-08

<11

<10

<24

<12

<30

<11

<21 29-Apr-08

<12

<11

<30

<14

<27

<12

<19 27-May-08

<13

<12

<28

<13

<30

<12

<23 24-Jun-08

<12

<10

<26

<14

<30

<11

<20 29-Jul-08

<12

<12

<27

<13

<30

<11

<21 26-Aug-08

<13

<10

<27

<12

<17

<12

<20 30-Sep-08

<12

<14

<30

<12

<30

<12

<18 28-Oct-08

<12

<11

<26

<13

<30

<11

<21 empty for re-lining

<13

<13

<11

<12

<12

<11

<12

<13

<12

<10

<12

<16

<47

<10

<13

<46

<10

<12

<45

<11

<15

<41

<11

<14

<48

<11

<14

<38

<11

<13

<41

<10

<13

<41

<10

<16

<43

<10

<14

<42

<11

<10 1028 +/-188

<14

<10 785 + I182

<12

<13 783 +/- 173

<8 903 + 179 The 85 acre Reservoir was out of service for re-lining from July 2007 to April 2008. Reservoir and Evap Pond sample frequency was changed to quarterly in August. Evap Ponds were still sampled and analyzed more frequently to meet Aquifer Protection Permit requirements.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 39

TABLE 8.10 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 T WRF INFLUENT 1-Jan-08 8-Jan-08 15-Jan-08 22-Jan-08 29-Jan-08 4-Feb-08 12-Feb-08 1-7-Feb-08 26-Feb-08 2-Mar-08 11-Mar-08 17-Mar-08 25-Mar-08 1-Apr-08 8-Apr-08 14-Apr-08 WRF down for ma 29-Apr-08 6-May-08 13-May-08 20-May-08 27-May-08 3-Jun-08 10-Jun-08 17-Jun-08 24-Jun-08 1-Jul-08 8-Jul-08 16-Jul-08

<11

<12

<22

<13

<25

<11

<20 43 +/- 12

<10

<11

<36

<13

<11

<12

<23

<13

<27

<11

<21 18 +/- 11

<12

<12

<37

<13

<13

<12

<24

<12

<30

<13

<22 38 +/- 13

<11

<14

<44

<13

<11

<11

<22

<13

<22

<12

<19 41 +/- 14

<11

<12

<38

<12

<11

<9

<23.

<14

<21

<11

<18 38 +/- 11

<10

<12

<33

<15

<12

<9.

<21

<14

<27

<12

<20 50 +/- 13

<10

<11

<37

<14

<13

<12

<25

<14

<27

<14

<23 11 +/- 11

<14

<14

<43

<15

<12

<9

<21

<12

<20

<12

<21 41 +/- 12

<10

<13

<47

<15

<13

<11

<28

<14

<30

<13

<20 37 +/- 13

<10

<13

<45

<12

<13

<10

<23

<13

<24

<11

<21 12 +/- 12

<8

<10

<38

<15

<13

<12

<25

<12

<30

<13

<22 6

15

<12

<14

<47

<14

<8

<9

<24

<9

<20

<9

<15 34+/- 11

<8

<10

<31

<12

<11

<10

<26

<13

<24

<11

<17 26+/- 10

<11

<10

<32

<11

<13

<13

<30

<13

<28

<13

<20 34 +/- 12

<9

<14

<41

<12

<13

<10

<29

<14

<28

<13

<23 20 +/- 14

<11

<15

<41

<15

<12

<12

<25

<12

<28

<10

<18 29 +/- 12

<10

<12

<39

<13 intenance 11.1

<15

<14

<29

<15

<29

<14

<25 75 +/- 20

<12

<15

<46

<12

<286

<11

<12

<27

<13

<30.

<13

<22 71 +/- 20

<13

<13

<44

<15

<12

<12

<25

<13

<27

<11

<20 68+/- 19

<11

<12

<42

<15

(

<10

<8

<19

<9

<19

<9

<19 33 +/- 11

<10

<10

<32

<15

<11

<10

<20

<11

<30

<11

<18 44 +/- 13

<10

<12

<39

<10

<291

<13

<11

<27

<15

<26

<13

<21 57 +/- 19

<11

<12

<41

<13

<11

<13

<26

<15

<26

<11

<19 23 +/- 12

<12

<14

<40

<13

<13

<13

<25

<15

<30

<14

<23 30 +/- 14

<11

<14

<46

<14

<11

<14

<27

<14

<30

<11

<25 35 +/- 13

<10

<11

<39

<9

<290

<12

<12

<25

<14

<28

<12

<21 23 +/- 13

<13

<14

<41

<12

<12

<11

<24

<13

<29

<11

<19 34 +/- 10

<10

<11

<35

<15

<13

<9

<22

<15

<25

<14

<21 17 +/-8

<11

<14

<44

<14 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 40

TABLE 8.10 SURFACE WATER ODCM required samples denoted by

• units are pCi/liter SAMPLE LOCATION DATE COLLECTED Mn-54 Co-51 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Tritium WRF INFLUENT 22-Jul-08

<10 29-Jul-08

<10 5-Aug-08

<11 12-Aug-08

<13 19-Aug-08

<12 26-Aug-08

<12 2-Sep-08

<10 9-Sep-08

<10 16-Sep-08

<13 23-Sep-08

<14 30-Sep-08

<13 7-Oct-08

<12 14-Oct-08

<15 WRF down for maintenance 4-Nov-08

<12 12-Nov-08

<12 18-Nov-08

<11 24-Nov-08

<14 2-Dec-08

<13 9-Dec-08

<11 16-Dec-08

<11 22-Dec-08

<13 29-Dec-08

<11

<11

<21

<12

<24

<10

<17

<13

<10

<9

<19

<12

<15

<8

<14

<10

<9

<11

<23

<13

<26

<11

<18 21 +/- 12

<11

<9

<20

<15

<22

<13

<21

<11

<10

<10

<20

<13

<24

<10

<19

<15

<10

<9

<28

<12

<27

<10

<22 26 +/- 10

<9

<14

<29

<12

<21

<15

<21

ý<13

<11

<11

<28

<15

<29

<13

<21

<15

<13

<12

<27

<14

<30

<13

<19 25 +/- 15

<10

<12

<24

<12

<29

<13

<28 23 +/- 12

<10

<14

<24

<12

<30

<12

<25 55 +/- 14

<13

<10

<27

<14

<30

<15

<22 25 +/- 15

<14

<12

<30

<13

<30

<13

<23 27 +/- 15

<15

<11

<23

<13

<25

<12

<21 22 +/- 10

<10

<13

<30

<11

<27

<15

<22 54 +/- 19

<13

<9

<28

<12

<25

<11

<15 86 +/- 16

<8

<12

<21

<14

<29

<12

<25 56 +/- 15

<11

<12

<25

<15

<26

<12

<21 29 +/- 12

<10

<12

<24

<13

<27

<12

<17 16 +/- 11

<8

<10

<16

<14

<23

<11

<19 23 +/- 10

<10

<13

<24

<15

<29

<13

<21 29 +/- 14

<12

<13

<25

<13

<29

<11

<20 75 +/- 21

<11

<10

<10

<11

<11

<13

<15

<16

<15

<12

<13

<15

<16

<15

<12

<13

<12

<13

<12

<12

<11

<15

<11

<35

<30

<44

<39

<41

<39

<44

<49

<43

<48

<34

<46

<47

<41

<48

<32

<37

<44

<41

<31

<44

<41

<11

<287

<15

<11

<12

<15

<281

<14

<13

<14

<15

<14

<268

<14

<12

<272

<13

<14

<11

<14

<280

<14

<15

<13

<13

<11

<280 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 41

TABLE 8.10 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 Tritium SEDIMENT.

BASIN #2 8-Jan-08

<10

<13

<22

<14

<25

<12

<19

<8

<11

<12

<42

<15 577 +/- 178 29-Jan-08

<14

<10

<23

<15

<27

<12

<22

<11

<12

<13

<43

<13 319 +/- 145 5-Feb-08

<14

<14

<26

<10

<28

<14

<25

<13

<10

<14

<42

<15

<237 12-Feb-08

<12

<11

<22

<11

<24

<10

<17

<10

<10

<13

<30

<13

<241 20-Feb-08

<12

<12

<26

<15

<29

<14

<21

<12

<13

<15

<44

<13 319 +/- 147 26-Feb-08

<11

<10

<17

<11

<24

<11

<19

<10

<10

<10

<34

<15

<283 26-Aug-08

<7

<11

<23

<13

<19

<10

<16

<9

<9

<11

<32

<14

<292 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 42

TABLE 8.11 SLUDGE/SEDIMENT ODCM required samples denoted by

• units are pCi/kg, wet SAMPLE LOCATION DATE COLLECTED 1-131 Cs-134 Cs-137 In-lll WRF CENTRIFUGE WASTE SLUDGE 1-Jan-08 1658 +/-231 8-Jan-08 1120 +/-144 15-Jan-08 686 +/- 117 22-Jan-08 930 +/- 124 29-Jan-08 1071 +/- 140 4-Feb-08 1098 163 12-Feb-08 905 +/- 139 18-Feb-08 683 +/-101 25-Feb-08 979+/- 155 3-Mar-08 863 +/- 134 10-Mar-08 602 +/- 94 17-Mar-08 578 +/- 92 25-Mar-08 701 +/- 103 1-Apr-08 471 +/-110 8-Apr-08 528+/- 110 15-Apr-08 428 +/-71 16-Apr-08 557 +/-114 WRF down for maintenance 29-Apr-08 180 +/-41 6-May-08 591 + 131 13-May-08 609 +/-92 20-May-08 907+/- 119 27-May-08 849 +/- 126 3-Jun-08 797 +/- 109 10-Jun-08 932 +/- 124 17-Jun-08 695 +/- 105 24-Jun-08 825 +/- 112 1-Jul-08 1054 +/- 221 8-Jul-08 1061 +/- 223 16-Jul-08 921 +/- 194 22-Jul-08 784 +/- 169 29-Jul-08 705 +/- 102 5-Aug-08 1288 +/- 270

<34

<17

<30

<26

<23

<33

<35

<22

<22

<22

<24

<17

<28

<26

<25

<29

<32

<24

<18

<20

<19

<17

<34

<22

<21

<15

<24

<19

<24

<22

<30

<23

<33

<33

<37

<33

<30

<31

<46

<35

<47

<35

<20

<26

<26

<22

<32

<25

<30

<20

<23

<36

<21

<32

<23

<28

<37

<38

<29

<26

<22

<21

<25

<19 40+/- 31 21 +/- 19 25 +/- 28 40 +/- 24 91 +/-44 37 +/- 22 71 +/-42 35 +/- 25 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 43

TABLE 8.11 SLUDGE/SEDIMENT ODCM required samples denoted by

• units are pCi/kg, wet SAMPLE DATE LOCATION COLLECTED 1-131 Cs-134 Cs-137 In-Ill 12-Aug-08 887 119

<30

<19 19-Aug-08 573 88

<26

<33 30 +/- 23 26-Aug-08 646 98

<29

<30 2-Sep-08 1057 221

<22

<21 35 +/- 19 9-Sep-08 693 +/- 97

<25

<11 WRF 16-Sep-08 760 165

<15

<29 CENTRIFUGE 23-Sep-08 968 + 128

<26

<20 WASTE SLUDGE 30-Sep-08 1378 +/- 168

<31

<31 7-Oct-08 1245 + 156

<29

<27 14-Oct-08 1321 +/- 165

<27

<33 WRF down for maintenance 4-Nov-08 314 +/- 75

<19

<22 12-Nov-08 661 +/- 145

<23

<25 18-Nov-08 2099 +/-244

<29

<31 60 + 34 24-Nov-08 2249 +/- 262

<29

<20 83 + 42 2-Dec-08 1490+E 186

<18

<21 9-Dec-08 1137 +240

<24

<29 16-Dec-08 864 186

<32

<30 22-Dec-08 1337 169

<24

<8 29-Dec-08 1758 351

<28

<31 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 44

TABLE 8.11 SLUDGE/SEDIMENT ODCM required samples denoted by

• Units are pCi/kg, wet SAMPLE DATE LOCATION COLLECTED 1-131 Cs-134 Cs-137 (N) 20-Nov-08 18+/-9

<10 13 +/- 8 (E) 20-Nov-08

<13

<11

<17 EVAP POND 1 (W) 20-Nov-08

<13

<13

<16 (N) 7-Nov-08

<9

<11 15 +/- 13 (E) 7-Nov-08

<11

<12 20:+/-:13 EVAP POND 2(W) 7-Nov-08

<12

<11 35 +/-:15 (S) 7-Nov-08

<10

<10 79 +/- 15 SED. BASIN #2 (N) 20-Nov-08

<12

<11 47 + 11 SED. BASIN #2 (S) 20-Nov-08

<11

<11 45 +/- 12 COOLING TOWER SLUDGE UNIT APPROXIMATE ISOTOPE ACTIVITY RANGE SAMPLE TYPE FRACTION OF SAMPLES CYCLE VOLUME (yd3)

(uCi/ml)

ABOVE MDA U3R13 290 Co-60

<MDA to 3.54E-07 26 of 32 Cs-137

<MDA to 1.49E-07 tower/canal sludge 16 of 32 U2R14 234 Co-60

<MDA to 1.60E-07 29 of 32 Cs-137

<MDA to 1.40E-07 tower/canal sludge 32 of 32 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 45

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

Gross Beta in Air 1999-2008 1.000 0.100 0.010 weekly average

(~1 Cl C

0 0

'.0 0

0 0

0 0

o o

U 0

0 U

U 0) 000:?

0o PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 46

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

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

-1998

-,>--1999

-2000 2001 m 2002

- 2003 2004 2005

-K--- 2006 2007

--+--2008 0.100 T 0.090 +

0.080 -

0.070 11 0.060 -

U 0.050 4-0.040 0.030 0.020 0.010 0.000 I

I I

I I

0) c/

c/

C/3 Sape oato c/I cj]

oo C0 Sample Location Site 7A is not included since the location changed since the pre-operational period A known high bias has occurred in gross beta data since the onsite laboratory began analysis in 1994 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 47

FIGURE 8.3 GROSS BETA IN DRINKING WATER 10 1..)

0.

5 N

~

N

/

N N

/

/

0 IIII I

I I

I I

I I

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec NOTES:

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

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 48

FIGURE 8.4 EVAPORATION POND TRITIUM ACTIVITY 4000 3000

". 2000 1000

'I IIIIIIII I

I I

I

ý,c 'o.0 -- -

w w W ON c a, C> )

k IC r--

w C C) ý;

14 "I W) 110 r-PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 49

FIGURE 8.5 SEDIMENTATION BASIN #2 Cs-137 250 238 209 200 150

-- 100

"*67 70 66 63 60 60 50 --

40 47 40 46 17 IlI

, U 1

<MDA

<MDA 0 --

---+---i I

Ht l--t 1976 1984 1990 1992 1993 1994 1995 1996 1997 1998 2001 2002 2003 2005 2008 onsite onsite soilavg. soilavg.

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

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 50

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.

TLDs were placed in forty-nine locations from one to thirty-five miles from the PVNGS. TLD locations are shown in Figures 2.1 and 2.2 and are described in Table 9.1. TLD results for 2008 are presented in Table 9.2. Historical environmental gamma radiation results for 1985 through 2008 are presented in graphical form on Figure 9.1 (excluding transit control TLD #45).

Figure 9.2 depicts the environmental TLD results from 2008 as compared to the pre-operational TLD results (excluding sites #41, #43, and #46-50 as they were deleted (and later assigned to a new location) or had no pre-op TLD at the location for comparison). 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 - 2008 51

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

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 3.6 37 38 39 40 41 42 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 N2 ESE3 N8 LOCATION DESCRIPTION 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.

355th Ave. and Elliot Rd.

339th Ave. and Dobbins Rd.

339th 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 S of Elliot Rd SW site boundary WSW site boundary W site boundary WNW site boundary NW site boundary NNW site boundary S of Buckeye Rd 39 5th Ave. and Van Buren St.

Tonopah Wintersburg Rd. and Van Buren St.

363ra Ave. and Van Buren St.

3 5 5th Ave. and Buckeye Rd.

343rd Ave. N of Broadway Rd.

Wintersburg Arlington School Ruth Fisher School PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 52

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

TLD SITE 43 44*

45**

46 47 48 49 50 LOCATION NE5 ENE35 Onsite ENE30 E35 E24 ENE 11 WNW5 LOCATION DESCRIPTION Winters Well School El Mirage 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 - 2008 53

TABLE 9.2 2008 ENVIRONMENTAL TLD RESULTS Units are mrem/std qtr

.TLD Site #

stQuqirter 2nd Quater-3rId Quarter= 4th Quarter Average>

1 19.9 25.3 18.0 21.9 21.3 2

18.4 22.6 16.6 missing 19.2 3

18.7 21.8 16.9 21.5 19.7 4

20.0 24.0 18.1 21.0 20.8 5

18.5 23.4 16.7 20.9 19.9 6(control) 22.8 27.5 20.7 25.1 24.0 7

22.0 25.8 20.0 23.3 22.8 8

20.2 25.0 18.3 22.7 21.6 9

24.6 28.9 22.4 25.7 25.4 10 20.9 24.8 19.0 2.2.3 21.8 11 21.4 26.1 19.4 23.4 22.6 12 19.3 24.2 17.5 22.6 20.9 13 21.8 26.4 19.9 24.3 23.1 14 21.8 26.3 19.8 23.9 23.0 15 20.3 24.7 18.4 22.2 21.4 16 18.5 23.2 16.7 21.0 19.9 17 21.4 26.1 19.5 23.9 22.7 18 20.8 24.4 18.9 21.8 21.5 19 21.3 26.5 19.4 24.3 22.9 20 21.7 25.6 19.7 23.3 22.6 21 22.0 27.1 20.0 23.6 23.2 22 22.8 27.3 20.8 24.4 23.8 23 19.8 23.8 17.9 21.4 20.7 24 19.3 22.6 17.5 21.3 20.2 25 20.1 24.9 18.2 22.6 21.5 26 23.4 26.9 21.3 27.7 24.8 27 24.0 27.2 21.9 27.5 25.2 28 23.4 25.4 21.3 25.4 23.9 29 21.2 23.9 19.3 24.1 22.1 30 22.0 25.3 20.0 24.6 23.0 31 20.7 23.4 18.8 22.5 21.4 32 22.1 24.9 20.1 24.4 22.9 33 22.1 25.2 20.1 24.7 23.0 34 24.2 27.7 22.1 26.3 25.1 35 27.2 29.9 24.9 29.1 27.8 36 missing missing 19.4 23.5 21.5 37 20.5 23.9 18.6 23.0 21.5 38 24.0 27.5 21.8 27.0 25.1 39 21.2 23.6 19.2 23.6 21.9 40 21.9 24.5 19.9 24.5 22.7 41 20.3 22.3 18.4 25.1 21.5 42 24.8 29.2 22.6 28.8 26.4 43 23.6 26.8 21.5 26.8 24.7 44(control) 17.4 19.7 15.7 19.8 18.2 45 (transit control) 5.2 6.1 4.4 5.3 5.3 46 22.4 26.1 20.4 25.4 23.6 47 19.9 21.8 18.0 22.4 20.5 48 20.2 23.8 18.3 22.5 21.2 49 19.9 21.9 18.1 20.4 20.1 50 17.0 19.2 15.9 23.8 19.0 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 54

FIGURE 9.1 NETWORK ENVIRONMENTAL TLD EXPOSURE RATES 30.0 -r mR/s td qtr

-BASELINE 0 YEAR MEAN 28.0 -

26.0 +/-

E" A-24.0 -

Ii 22.0 20.0 18.0 vKJU 18.0 00000=oo0000oo000 oN o

ON O. O' O

\\ON ON ON ON ON ON ON ON ON ON ONON ON ON ON C)

C00000 0000000 0000 4e 4

ý

L 4 L

a3 L 5

Las L 'L L c

L

. L, L,L L 'L L L 5

L 5

L 4, L ;L, L C4, &L L 6 4 6 ý L c

L c

L L L ca um 0N U~

0w

• rN w

~

mN*

~

mN*rN m

• ~

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 55

FIGURE 9.2 ENVIRONMENTAL TLD COMPARISON - PRE-OPERATIONAL VS 2008 35 30 25 20 15

-- Pre-op (1984-1985) 6 10 2008 Average 5

0 1

3 5

7 9

11 13 15 17 19 21 23 TLD Number 25 27 29 31 33 35 37 39 42 45 The following TLDs are not included on this graph; TLD #41 monitoring location was deleted in June, 2000 due to school closing (this TLD was placed at new school in 2004)

TLD #43 monitoring location was deleted in 1994 due to school closing (this TLD was placed at a new school in 2007)

TLDs #46-50 are not included since they were not included in the pre-op monitoring program PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 56

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 March-April 2008.

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 no changes in nearest resident status. Dose calculations indicated the highest dose to be 0.167 mrem.

Milk Animal There was one (1) change in milk animal status. Dose calculations indicated the highest dose to be 0.337 mrem.

Vegetable Gardens

• There were no changes in nearest garden status. Dose calculations indicated the highest dose to be 0.323 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 - 2008 57

TABLE 10.1 2008 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 2007 N

1.55 3.10 NONE Resident 4.50E-02 Garden 9.41E-02 NNE 1.52 3.30 3.85 Resident 7.13E-02 MILK Garden 1.77E-01 Milk 1.61E-01 NE 2.16 NONE 3.91 Resident 1.27E-01 Milk 3.37E-01 ENE 2.16 2.63 4.84 Resident 8.98E-02 Garden 3.23E-01 Milk 1.35E-01 E

2.81 NONE NONE Resident 6.84E-02 ESE 1.89 NONE NONE Resident 1.24E-01 SE 3.36 NONE NONE Resident 8.80E-02 SSE NONE NONE NONE NA S

NONE NONE NONE NA SSW NONE NONE NONE NA SW 1.39 NONE NONE Resident 1.67E-01 WSW 0.75 NONE NONE Resident 1.02E-01 W

0.70 NONE NONE Resident 6.56E-02 WNW 2.67 NONE NONE Resident 1.36E-02 NW 0.93 NONE NONE Resident 5.14E-02 NNW 1.30 NONE NONE Resident 4.57E-02 COMMENTS:

Dose calculations were performed using the GASPAR code and 2007 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 - 2008 58

11.

Summary and Conclusions The conclusions are based on a review of the radio assay results and environmental gamma radiation measurements for the 2008 calendar year. Where possible, the data were compared to pre-operational sample data.

All sample results for 2008 are presented in Tables 8.1-8.11 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 Reservoirs is the result of offsite sources and appears 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 permitted gaseous effluent releases and secondary plant releases. These concentrations are consistent with historical values.

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

The only measurable impact on the environment in 2008 was the low level tritium discovered in subsurface water onsite in the Radiological Controlled Area in 2006. See Section 2.4for specific information.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 59

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 2008 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)a Nonroutine (Unit of Analyses (from Table Mean (f)a Distance and Range Mean (f)a Reported Measurement)

Performed 6.1)

Range Direction Range Measurements Direct Radiation TLD - 197 NA 22.4 (185/185)

Site #35 27.8 (4/4) 21.1 (8/8) 0 (mrem/std. qtr.)

15.9-29.9 8 miles 3300 24.9-29.9 15.7-27.5 Air Particulates Gross Beta - 526 0.010 0.033 (473/473)

Site #15 0.035 (51/51) 0.036 (53/53) 0 (pCi/m3) 0.016 - 0.067 2 miles 550 0.018 - 0.063 0.020 - 0.073 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. - 526 (pCi/m3) 1-131 0.07

<LLD NA

<LLD

<LLD 0

Broadleaf Gamma Spec. - 12 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

Ground Water H 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

Zr-95 30

<LLD NA

<LLD NA 0

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 60

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 2008 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)a Nonroutine (Unit of Analyses (from Table Mean (f)a Distance and Range Mean (f)'

Reported Measurement)

Performed 6.1)

Range Direction Range Measurements Nb-95 15

<LLD NA

<LLD NA 0

Ground Water 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 4.4 (29/48)

Site #55 4.8 (9/12)

NA 0

2.5-7.8 3 miles 2100 3.5-7.8 H 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 - 2008 61

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 2008 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)a Nonroutine (Unit of Analyses (from Table Mean (f)a Distance and Range Mean (f)a Reported Measurement)

Performed 6.1)

Range Direction Range Measurements Gamma Spec. - 8 1-131 1.0

<LLD NA

<LLD

<LLD 0

Milk Cs-134 15

<LLD NA

<LLD

<LLD 0

(pCi/liter)

Cs-137 18

<LLD NA

<LLD

<LLD 0

Ba-140 60

<LLD NA

<LLD

<LLD 0

La-140 15

<LLD NA

<LLD

<LLD 0

Gamma Spec. - 35 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 17(7/35)

Site #61 18 (4/8)

NA 0

(pCi/liter) 11-3 1 Onsite 67' 14-31 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 - 2008 62

TABLE 11.1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL

SUMMARY

Palo Verde Nuclear Generating Station Maricopa County, Arizona Docket Nos. STN 50-528/529/530 Calendar Year 2008 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)a Nonroutine (Unit of Analyses (from Table Mean (f)a Distance and Range Mean (f)a Reported Measurement)

Performed 6.1)

Range Direction Range Measurements Surface Water H 15 3000 947 (8/15)

Site #59 1020 (4/4)

NA 0

(pCi/liter) 783-1111 Onsite 180' 913-1111

-continued-(a) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses. (f)

NOTE: Miscellaneous samples that 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 - 2008 63

12.

References

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

2. 1985-2007 Annual Radiological Environmental Operating Reports, Palo Verde Nuclear Generating Station

3. Palo Verde Nuclear Generating Station Technical Specifications and Technical Reference Manual

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

5. Regulatory Guide 4.1, Programs for Monitoring Radioactivity in the. Environs of Nuclear Power Plants

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

7. NRC Radiological Assessment Branch Technical Position on Environmental Monitoring, Revision 1, November 1979 (Incorporated into NUREG-1301)

8. NEI 07-07, Nuclear Energy Institute, Industry Ground Water Protection Initiative - Final Guidance Document, August 2007 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2008 64