ML13128A006

Submittal of Annual Radiological Environmental Operating Report 2012

ML13128A006
Person / Time
Site:	Palo Verde
Issue date:	04/26/2013
From:	Weber T Arizona Public Service Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
102-06695-TNW/RKR/KAR
Download: ML13128A006 (75)

Text

raps Technical Specification 5.6.2 Palo Verde Nuclear Generating Station PO Box 52034 Phoenix, Arizona 85072-2034 Mail Station 7636 102-06695-TNW/RKR/KAR April 26, 2013 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 50-528/529/530 Annual Radiological Environmental Operating Report 2012 In accordance with PVNGS Technical Specification (TS) 5.6.2, enclosed please find the Annual Radiological Environmental Operating Report for 2012.

No new commitments are being made to the NRC by this letter. Should you need further information regarding this submittal, please contact Robert Roehler, Licensing Section Leader, at (623) 393-5241.

Sincerely, Thomas N. Weber Department Leader, TNW/RKR/KAR/hsc Enclosure cc:

A.T. Howell III J. K. Rankin M. A. Brown A. V. Godwin T. Morales Regulatory Affairs NRC Region IV Regional Administrator NRC NRR Project Manager for PVNGS 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

4 I

NUCLEAR GENERATING STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 2012

(

Reference:

RCTSAI 1643, Legacy Item No. 036843.01)

Poparad, Adam Prepared by: J(Z07376)

Digitally signed by Poparad. Adam J(Z07376)

DN: cn=Poparad, Adam J(Z07376)

Reason: I am the author of this document Date: 2013.04.17 09:32:38 -0700' Adam J. Po Gray, Thomas Reviewed by:S(Z9961 0)

Thomas S.

Moeller, Carl Approved by: (Z091 19) parad Digitally signed by Gray, Thomas S(Z99610)

DN: cn=Gray, Thomas S(Z99610)

Reason: I have reviewed this document Date: 2013.04.17 09:47:27 -07'00' Gray Digitally signed by Moeller, Carl (Z09 119)

DN: cn=Moeller, Carl (Z09119)

Date: 2013.04.17 22:08:13 -07'00' Manager, Radiation Protection

TABLE OF CONTENTS

1.

IN TRO D U CTIO N..........................................................................................................................

2

2.

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

3 2.1.

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM....................................................

3 2.2.

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM CHANGES FOR 2012.....................

3 2.3.

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

4 2.4.

G ROUND W ATER PROTECTION..............................................................................................

4

3.

SA M PLE CO LLECTIO N 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.............................................................................................................

12

4.

AN A LY TICA L PRO CED UR ES..............................................................................................

13 4.1.

AIR PARTICULATE......................................................................................................................

13 4.2.

A IRBORNE RADIOIODIN E............................................................................................................

13 4.3.

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

13 4.4.

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

13 4.5.

SLUD GE/SEDIM ENT....................................................................................................................

14 4.6.

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

14 4.7.

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

14

5.

N U CLEA R IN STRUM EN TA TION.........................................................................................

15 5.1.

G AMM A SPECTROM ETER............................................................................................................

15 5.2.

LIQUID SCINTILLATION SPECTROMETER.................................................................................. 15 5.3.

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

15

6.

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

16 6.1.

LOWER LIM ITS OF D ETECTION...............................................................................................

16 6.2.

D ATA REPORTIN G CRITERIA....................................................................................................... 16 6.3.

LLD AND REPORTIN G CRITERIA O VERVIEW..........................................................................

17

7.

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

22 7.1.

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

22 7.2.

INTERCOMPARISON RESULTS...................................................................................................... 22

8.

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

26 8.1.

A IR PAR TICULATES....................................................................................................................

26 8.2.

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

27 8.3.

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

27 8.4.

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

27 8.5.

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

27 8.6.

G ROUND W ATER........................................................................................................................

27 8.7.

SURFACE W ATER.......................................................................................................................

27 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 ii

TABLE OF CONTENTS 8.8.

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

28 8.9.

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

28

9.

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

54

10.

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

60 10.1.

INTRODUCTION....................................................................................................................... 60 10.2.

CENSUS RESULTS....................................................................................................................

60

11.

SU M M A RY A N D CO N CLU SIO N S......................................................................................

65

12.

RE FERE N CES.............................................................................................................................

69 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 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 1sT - 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 - 2' QUARTER...............................................................

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

33 TA B LE 8.6 V EG ETA TIO N......................................................................................................................

34 T AB L E 8.7 M IL K.....................................................................................................................................

35 TABLE 8.8 DRINKING WATER.......................................................................................................

36 TABLE 8.9 GROUND WATER.........................................................................................................

38 TABLE 8.10 SURFACE WATER.......................................................................................................

39 TABLE 8.11 SLUDGE/SEDIMENT..................................................................................................

43 TABLE 8.12 HARD-TO-DETECT RADIONUCLIDES RESULTS...................................................

46 TABLE 9.1 TLD SITE LOCATIONS...................................................................................................

55 TABLE 9.2 ENVIRONMENTAL TLD RESULTS.............................................................................

57 TABLE 10.1 LAND USE CENSUS....................................................................................................

61 TABLE 11.1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL SU M M AR Y...............................................................................................................................................

66 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 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 GROSS BETA IN AIR, 1St-2nd Quarter......................................................................

47 FIGURE 8.2 GROSS BETA IN AIR, 3

-4 4 th Quarter......................................................................

48 FIGURE 8.3 HISTORICAL GROSS BETA IN AIR (WEEKLY SYSTEM AVERAGES)........... 49 FIGURE 8.4 HISTORICAL GROSS BETA IN AIR (ANNUAL SITE TO SITE COMPARISONS)

C O M PA R ED TO PRE -O P.............................................................................................

........................ 50 FIGURE 8.5 GROSS BETA IN DRINKING WATER...................................................................

51 FIGURE 8.6 EVAPORATION POND TRITIUM ACTIVITY........................................................

52 FIGURE 8.7 SEDIMENTATION BASIN 2 Cs-137.........................................................................

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

58 FIGURE 9.2 ENVIRONMENTAL TLD COMPARISON - PRE-OPERATIONAL VS 2012........ 59 FIGURE 10.1 HISTORICAL COMPARISON OF NEAREST RESIDENT DOSE.........................

62 FIGURE 10.2 HISTORICAL COMPARISON OF NEAREST MILK ANIMAL DOSE.................

63 FIGURE 10.3 HISTORICAL COMPARISON OF NEAREST GARDEN DOSE............................

64 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 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 2012, the following categories of samples were collected by APS:

0 0

0 0

0 0

0 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.

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

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 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.

This report contains the measurements and findings for 2012. All references are specifically identified in Section 12.

The Radiological Environmental Monitoring Program provides representative measurements of radiation and of radioactive materials in those exposure pathways and for those radionuclides that lead to the highest potential radiation exposures of members of the public resulting from the station operation. This monitoring program implementsSection IV.B.2 of Appendix I to 10 CFR Part 50 and thereby supplements the radiological effluent monitoring program by verifying that the measurable concentrations of radioactive materials and levels of radiation are not higher than expected on the basis of the effluent measurements and the modeling of the environmental exposure pathways. Guidance for this monitoring program is 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).

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).

The Land Use Census ensures that changes in the use of areas at and beyond the site boundary are identified and that modifications to the REMP are made if required by the results of this census.

This census satisfies the requirements of Section IV.B.3 of Appendix I to 10 CFR Part 50.

The Interlaboratory Comparison Program is provided to ensure that independent checks on the precision and accuracy of the measurements of radioactive material in environmental sample matrices are performed as part of the quality assurance program for environmental monitoring in order to demonstrate that the results are valid for the purposes of Section IV.B.2 of Appendix I to 10 CFR Part 50.

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 - 2012 2

2.

Description of the Monitoring Program APS and vendor organizations performed the pre-operational radiological environmental monitoring program between 1979 and 1985. APS and vendors continued the program into the operational phase.

2.1.

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. Routine sample analyses were performed at the onsite Central Chemistry Laboratory and Operating Unit laboratories. Analyses for hard-to-detect radionuclides were performed by Eberline Analytical Services.

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 2012 There were no changes to the Radiological Environmental Monitoring Program that impacted the Off-site Dose Calculation Manual (ODCM) Revision 26.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 3

2.3.

REMP Deviations/Abnormal Events Summary During calendar year 2012, there were seven (7) deviations/abnormal events with regard to the monitoring program. Refer to Table 2.3 for more detail and any corrective actions taken.

1. The 45 acre Reservoir exceeded the 1St quarter 1-131 reporting level of 20 pCi/liter.

2. The 45 acre Reservoir exceeded the 2 nd quarter 1-131 reporting level of 20 pCi/liter.

3. The 85 acre Reservoir exceeded the 2nd quarter 1-131 reporting level of 20 pCi/liter.

4. Air sample site #21 data was invalid

5. Resident well water Site #55 was out of service for a week in April.

6. Milk sample from Site #51 not available for December 2012.

7. Missing TLDs at location 22 for 4 th quarter.

2.4.

Ground Water Protection 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.

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 Aquifer Protection Permit (Area-Wide)

No. P-100388 (APP) provides agreed upon monitoring parameters and reporting thresholds. Sample results for the shallow aquifer wells are reported in the PVNGS Annual Radioactive Effluent Release Report (ARERR). The State of Arizona APP provides specific regulatory criteria for ground water protection. PVNGS is working with the Arizona Department of Environmental Quality (ADEQ) to prevent this tritiated water from affecting the local aquifer.

PVNGS has implemented a ground water protection initiative developed by the Nuclear Energy Institute (NEI). The implementation of 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.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT-2012 4

Three subsurface samples were obtained, one each from Units 2 and 3 tritium monitoring wells, and one from the shallow aquifer outside of the Unit 1 radiological controlled area (RCA). These samples were analyzed for hard-to-detect radionuclides (e.g. C-14, Fe-55, Ni-63, Sr-90) as a verification that there are no underground leaks from plant systems that may affect ground water. All results were <MDA. Refer to Table 8.12 for sample results.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 5

Table 2.1 SAMPLE COLLECTION LOCATIONS SAMPLE TYPE LOCATION DESCRIPTION air air air air air air air air air air drinking water vegetation drinking water drinking water milk milk milk (supplemental) drinking water (supplemental) ground water ground water surface water surface water surface water vegetation surface water surface water APS Office Old US 80 Arlington School 371 Ave. and Buckeye-Salome Rd.

NE Site Boundary 351 tAve.

S Site Boundary W Site Boundary Tonopah Transmission Rd local resident local resident local resident Local resident local resident-goats local resident-goats local resident-goats local resident Well 27ddc Well 34abb Evaporation Pond 1 85 acre Reservoir 45 acre Reservoir Commercial farm Evaporation Pond 2 Evaporation Pond 3 NOTES:

• Designates a control site (a) Distances and direction are from the center-line of Unit 2 containment and rounded to the nearest mile (b) Denotes a change in location 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 - 2012 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 53 M/AA 54 M/AA 55 W

57 Q

58 Q

59 Q

60 Q

61 Q

62 M/AA 63 Q

64 Q

W = WEEKLY M/AA = MONTHLY AS AVAILABLE Q = QUARTERLY PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 7

TABLE 2.3 SUMMARIES OF REMP DEVIATIONS/ABNORMAL EVENTS 1.

Deviation/Abnormal Event The 45 acre Reservoir exceeded the 1 st quarter 1-131 reporting level of 20 pCi/liter.

2. The 45 acre reservoir exceeded the 2"d quarter 1-131 reporting level of 20pCi/liter.

3. The 85 acre Reservoir exceeded the 2nd quarter 1-131 reporting level of 20pCi/liter.

4. Air sample site #21 data was invalid.

5. Resident well water Site #55 was out of service.

Actions taken

1. The initial sample result was 20 +/- 10 pCi/liter. The verification analysis result was 21 +/- 11 pCi/liter. The elevated 1-131 concentration is due to radiopharmaceutical 1-131 that is present in the reclaimed sewage water that supplies Circulating Water and is not the result of plant effluents. Refer to Corrective Action Program document CRDR 4051062 for the evaluation of exceeding the ODCM Reporting Level.

2. The initial sample result was 50 +/- 14 pCi/liter.

The verification analysis result was 38 +/- 12 pCi/liter. The elevated 1-131 concentration is due to the radiopharmaceutical 1-131 that is present in the reclaimed sewage water that supplies the Circulating Water and is not the result of the plant effluents.

Refer to Corrective Action Program document CRDR 4051062 for the evaluation of exceeding the ODCM Reporting Level

3. The initial sample result was 32 +/- 15 pCi/liter.

The verification analysis result was 34 +/- 10 pCi/liter. The elevated 1-131 concentration is due to the radiopharmaceutical 1-131 that is present in the reclaimed sewage water that supplies the Circulating Water and is not the result of the plant effluents.

Refer to Corrective Action Program document CRDR 4051062 for the evaluation of exceeding the ODCM Reporting Level

4. The results for the weekly air filter gross beta Radiological Environmental Monitoring Program (REMP) air sample taken at Site 21 on 5-15-12 was much lower than expected. The gross beta counts per minute (cpm) are 9.4 for Site 21 in comparison to a range of 13.3 to 14.8 cpm for the other 9 samples. The calculated Relative Standard Deviation (RSD) for the sample set with Site 21 included is 15.6; with Site 21 excluded the RSD is 8.5.

Corrective Action Program CRDR 4172123 initiated for evaluation but cause was indeterminate.

Meteorology data indicated that there were winds in excess of 45 mph on 5/9/12.

5. The resident well at Site #55 was out of service from 4/3/12 to 4/10/12.

The monthly composite sample only includes weeks 4/17/12 and 4/24/12.

.1.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 8

6. Milk sample from Site #51 not

6. The resident at Site #51 was not available to provide a available monthly goat milk sample on 12/14/2012.

7. Missing TLDs at location 22 for

7. The TLDs used for monitoring location 22 (SSW site 4th quarter boundary - comer of Wintersburg and Elliott) were missing at the time of exchange. This was most likely due to road grading in this area. All TLD results appear normal.

This is reflected in Table 9.2 ENVINRONMENTAL TLD RESULTS.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 9

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REMP SAMPLE SITES 10-35 MILES

3.

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

3.1.

Water Weekly samples were collected from four (4) residence wells for monthly and quarterly composites. Samples were collected in one-gallon containers and 500 ml glass bottles. The samples were analyzed for gross beta, gamma emitting radionuclides and tritium.

Quarterly grab samples were collected from the 45 and 85 acre Reservoirs, Evaporation Ponds 1/2A/2B/3A/3B, and 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.

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.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 12

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.

4.3.2.

Radiochemical 1-131 Separation Iodine in milk sample is reduced with sodium bisulfite and iodine is absorbed by the anion exchange resin. The iodine is eluted with NaOCL. Iodine is extracted from the sample with carbon tetrachloride. The iodine is back extracted from the organic with water containing sodium bisulfate and then precipitated as CuI. The precipitate is mounted in a planchet and counted for gross beta 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.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 13

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.

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.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 14

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 12-16 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 - 2012 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 2y 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:

S 0

S 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 - 2012 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.

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 - 2012 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 - 2012 18

Table 6.1 ODCM REQUIRED LOWER LIMITS OF DETECTION (aprior)

AIRBORNE ANALYSIS/

WATER PARTICULATE or MILK VEGETATION NUCLIDE (pCi/liter)

GAS (pCi/m3)

(pCi/liter)

(pCi/kg, wet)

Gross Beta 4

[

0.01 I

H-3 2000*

I Mn-54 15 I

Fe-59 30 1

Co-58, 60 f

15 r___

Zn-65 30 Zr-95

[

30

[

I Nb-95

.[

15 F

1-131

[

I**

I 0.07 1

60 Cs-134

[

15 1

0.05 15 1

60 Cs-137

[

18

[

0.06 1

18 80 Ba-140

[

60 60 La-140 15 15 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 NOTES:

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 - 2012 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*

I I

Mn-54 1,000 f

I Fe-59 j

400 Co-58 I

1,000 5II I

C o-60 300 I

-I__

Zn-65

[

300

[

Zr/Nb-95 I

400 I

1-131 2**

0.9 3

I 100 Cs-134 I

30 I

10 60

[

1,000 Cs-137 1

50 20 70

[

2,000 Ba/La-140-200 1

300 The values in this table are quarterly average values, as stated in the ODCM.

NOTES:

• For drinking water samples. This is a 40CFR141 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 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 20

Table 6.3 TYPICAL MDA VALUES ANALYSIS/

WATER MILK AIRBORNE VEGETATION NUCLIDE (pCi/liter)

(pCi/liter)

PARTICULATE or (pCi/kg, wet)

___________________]

GAS (pCi/m3)__________

Gross Beta 1.9 0.003 H-3 289 Mn-54 I I I

I Fe-59 18

[1 IF I

Co-58 10 11 F7 F

I Co-60 I 11

]F 1

-IF Zn-65 25 IF Zr-95 18 JJ IF Nb-95 10 F

1-131 9

1 0.05 43 Cs-134 10 1

0.02 56 Cs-137 1

11 1

I0.02 I

49 Ba-140 34 4

I I

La-140 13 1

NOTES:

a - low level 1-131 is not required since there is no drinking water pathway b - Based on 433 in3, the normal weekly sample volume PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 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 2012, APS analyzed the following sample types under the interlaboratory comparison program;

" Beta/Gamma/ in Air Filter

" 1-131 in Air

• Beta in Water

• Gamma in Water

" Tritium in Water

" 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 - 2012 22

TABLE 7.1 INTERLABORATORY COMPARISON RESULTS Sample Analysis Nuclide Known PVNGS 1 sigma Resolution*

Ratio Acceptable?

Type Type Value**

Value Error I

Mixed Gamma Milk E10008 1-131 Ce-141 Cr-51 Cs-134 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 1.72E+01 4.65E+01 7.80E+01 2.67E+01 2.84E+01 2.36E+01 3.49E+01 3.OOE+01 5.95E+01 4.98E+01 1.74E+01 4.84E+01 8.22E+01 2.57E+01 3.08E+01 2.42E+01 3.85E+01 3.28E+01 6.39E+01 5.46E+01 1.02E+00 2.17E+00 5.35E+00 1.25E+00 1.46E+00 1.34E+00 2.06E+00 1.97E+00 3.11E+00 2.42E+00 17 22 15 21 21 18 19 17 21 23 1.01 1.04 1.05 0.96 1.08 1.03 1.10 1.09 1.07 1.10 YES YES YES YES YES YES YES YES YES YES Mixed Gamma Air E10007 Ce-141 Cr-51 Cs-134 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 1.83E+02 3.06E+02 1.05E+02 1.12E+02 9.27E+01 1.37E+02

1. 18E+02 2.34E+02 1.96E+02 1.85E+02 3.38E+02 9.43E+01 1.19E+02 9.95E+01 1.56E+02 1.36E+02 2.58E+02 2.10E+02 8.OOE+00 2.22E+01 4.97E+00 6.10E+00 5.37E+00 7.70E+00 9.OOE+00 1.28E+01 9.30E+00 23 15 19 20 19 20 15 20 23 1.01 1.10 0.90 1.06 1.07 1.14 1.15 1.10 1.07 YES YES YES YES YES YES YES YES YES Mixed Gamma Water E10005 1-131 Ce-141 Cr-51 Cs-134 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 9.38E+01 1.84E+02 3.09E+02 1.06E+02 1.13E+02 9.34E+01 1.38E+02 1.19E+02 2.35E+02 1.97E+02 9.58E+01 1.95E+02 2.78E+02 9.69E+01 1.19E+02 9.67E+01 1.47E+02 1.45E+02 2.52E+02 2.08E+02 5.38E+00 7.70E+00 2.73E+01 4.60E+00 5.20E+00 4.68E+00 6.40E+00 9.50E+00 1.15E+01 8.OOE+00 18 25 10 21 23 21 23 15 22 26 1.02 1.06 0.90 0.91 1.05 1.04 1.07 1.22 1.07 1.06 YES YES YES YES YES YES YES YES YES YES Mixed Gamma Water E10226 1-131 Ce-141 Cr-51 Cs-134 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 9.99E+01 2.51E+02 3.80E+02 1.66E+02 2.67E+02 1.54E+02 3.OOE+02 2.33E+02 2.95E+02 2.33E+02 9.70E+01 2.32E+02 3.82E+02 1.60E+02 2.61E+02 1.53E+02 3.12E+02 2.50E+02 2.73E+02 2.46E+02 8.26E+00 1.15E+01 3.60E+01 9.50E+00 1.46E+01 9.40E+00 1.61E+01 1.64E+01 1.81E+01 1.26E+01 12 20 11 17 18 16 19 15 15 20 0.97 0.92 1.01 0.96 0.98 0.99 1.04 1.07 0.93 1.06 YES YES YES YES YES YES YES YES YES YES PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 23

TABLE 7.1 INTERLABORATORY COMPARISON RESULTS Sample Analysis Nuclide Known PVNGS 1 sigma Resolution*

Ratio Acceptable?

Type Type Value**

Value Error Air Gamma Filter Ce-141 1.33E+02 1.40E+02 6.00E+00 23 1.05 YES E10229 Cr-51 2.02E+02 2.12E+02 1.69E+01 13 1.05 YES Cs-134 8.81E+01 7.87E+01 4.45E+00 18 0.89 YES Cs-137 1.42E+02 1.49E+02 7.70E+00 19 1.05 YES Co-58 8.18E+01 8.88E+01 5.14E+00 17 1.09 YES Mn-54 1.59E+02 1.78E+02 9.30E+00 19 1.12 YES Fe-59 1.24E+02 1.56E+02 9.40E+00 17 1.26 YES Zn-65 1.57E+02 1.82E+02 1.00E+01 18 1.16 YES Co-60 1.24E+02 1.33E+02 6.40E+00 21 1.07 YES Air Cartridge 1-131 9.26E+01 9.95E+01 3.34E+00 30 1.07 YES E10006 G.

Water Gross Beta Beta 2.51E+02 3.04E+02 6.35E+00 48 1.21 YES E10224 Water Tritium H-3 1.30E+04 1.24E+04 3.45E+02 36 0.95 YES E10225 G.

Air Gross Beta Beta 8.87E+01 1.08E+02 2.47E+00 44 1.22 YES E10227 Air Cartridge 1-131 9.68E+01 9.74E+01 3.91E+00 25 1.01 YES E10228

• calculated from PVNGS value/1 sigma error value

• • Eckert & Ziegler Analytics, Inc. NIST-traceable known value NRC Acceptance Criteria 1 Resolution 4-7 8-15 16-50 51-200

>200 Ratio 0.5-2.0 0.6-1.66 0.75-1.33 0.80-1.25 0.85-1.18 1 From NRC Inspection Manual, procedure #84750, "Radioactive Waste Systems; Water Chemistry; Confirmatory Measurements" PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 24

TABLE 7.1 INTERLABORATORY COMPARISON RESULTS Sample Analysis PVNGS Assigned Acceptance Type Type Value Value 1 Limit 2 Results]

Water Tritium H-3 16,5003 19,200 16,800 - 21,100 Acceptable RAD-88 ERA STUDY Gross Water Beta g beta 35.1 36.8 24.2 - 44.4 Acceptable RAD-90 ERA STUDY Gross Filter Beta g beta 67.3 52.5 33.2 - 76.5 Acceptable MRAD-16 ERA STUDY 1The ERA assigned values are established per the guidelines contained in the National Environmental Laboratory Accreditation Conference (NELAC) program criteria as applicable.

2 "Acceptance Limits" have been calculated per ERA's Standard Operating Procedure for the Generation of Performance Acceptance Limits.

3 PVNGS failed the RAD-88 ERA STUDY (outside of range). This was documented in PVAR 4111670 and the subsequent corrective actions were taken to recalibrate the liquid scintillation counter.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 25

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 reepo0Irat.

Results and interpretation of the data for all of the samples analyzed during 2012 are presented in the following sections.

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 0.019 to 0.069 pCi/m 3. The associated counting error ranged from 0.001 to 0.004 pCi/m3. 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.

Tables 8.3 display the results of gamma spectroscopy on the quarterly composite samples.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 26

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 7.6 pCi/liter. The gross beta activity is attributable to natural (background) radioactive materials.

8.6.

Ground Water Ground water samples were analyzed from two onsite wells (regional aquifer) 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.

Sample results are presented in Table 8.11. 1-131 was observed in Evaporation Pond 2B in one (1) sample (34 pCi/liter). The 45 acre Reservoir observed two (2) 1-131 samples (21 pCi/liter and 50 pCi/liter). The 85 acre reservoir observed one (1) 1-131 sample (32 pCi/liter).

1-131 in these surface water locations is a result of radiopharmaceutical 1-131 in the Phoenix sewage effluent and is not attributable to plant effluents.

Tritium was routinely observed in the Evaporation Ponds. The highest concentration was 1350 pCi/liter. Tritium was not detected in the Reservoirs. The tritium identified in the Evaporation Ponds has been attributed to permitted plant gaseous effluent releases and secondary plant liquid discharges (e.g. condensate overboard discharge, secondary side steam generator drains, secondary plant sumps, demineralizer regeneration waste). The tritium concentrations were compared to historical values and are considered typical for the Evaporation Ponds.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT-2012 27

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 1-131 concentration ranged from 10 to 50 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.

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. I-131 activity in the sludge is consistent with historical values and, as previously discussed, is due to radiopharmaceuticals in the WRF Influent. The concentration of 1-131 ranged from 162 to 2013 pCi/kg.

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

8.8.2.

Cooling Tower sludge Sludge/sediment originating from the Unit 1 and Unit 3 Cooling Towers and Circulating Water canals was disposed of in the WRF sludge landfill during 2012. Sample results can be found in Table 8.11.

8.9.

Data Trends Figures 8.1-8.7 present data in graphical format. Historical data are displayed for comparison where practical.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 28

TABLE 8.1 PARTICULATE GROSS BETA IN AIR 1st - 2 nd QUARTER ODCM required samples denoted by

• units are pCi/m3 1st Quarter (control)

START DATE STOP DATE Site Site 4

6A*

Site Site Site Site 7A 14A*

15*

17A Site Site Site 21 29*

35 Site 40*

RSD Mean

(%)

Week #

1 2

3 4

5 6

7 8

9 10 11 12 13 Week #

27-Dec-11 3-Jan-12 10-Jan-12 17-Jan-12 24-Jan-12 31-Jan-12 7-Feb-12 13-Feb-12 21-Feb-12 28-Feb-12 6-Mar-12 13-Mar-12 20-Mar-12 3-Jan-12 10-Jan-12 17-Jan-12 24-Jan-12 31-Jan-12 7-Feb-12 13-Feb-12 21-Feb-12 28-Feb-12 6-Mar-12 13-Mar-12 20-Mar-12 27-Mar-12 0.059 0.047 0.044 0.028 0.035 0.048 0.050 0.025 0.031 0.024 0.035 0.027 0.028 0.063 0.053 0.046 0.034 0.039 0.054 0.052 0.026 0.033 0.026 0.034 0.026 0.028 0.058 0.047 0.047 0.032 0.035 0.050 0.047 0.025 0.035 0.025 0.037 0.029 0.027 0.054 0.043 0.044 0.028 0.035 0.051 0.051 0.027 0.034 0.024 0.037 0.027 0.028 0.059 0.054 0.045 0.046 0.045 0.042 0.032 0.026 0.036 0.031 0.056 0.054 0.049 0.050 0.028 0.026 0.032 0.035 0.025 0.024 0.040 0.038 0.028 0.028 0.029 0.026 0.054 0.042 0.039 0.026 0.031 0.048 0.047 0.025 0.032 0.023 0.034 0.024 0.026 0.057 0.051 0.043 0.043 0.044 0.042 0.030 0.030 0.033 0.032 0.053 0.052 0.049 0.048 0.026 0.025 0.033 0.031 0.023 0.025 0.034 0.037 0.027 0.025 0.026 0.024 0.055 0.043 0.042 0.029 0.031 0.051 0.049 0.028 0.031 0.023 0.034 0.025 0.024 0.056 0.045 0.043 0.029 0.034 0.052 0.049 0.026 0.033 0.024 0.036 0.027 0.027 6.3 7.0 5.4 9.2 7.9 5.1 3.3 4.6 4.8 4.3 5.9 5.9 6.4 Mean 0.037 0.040 0.038 0.037 2nd Quarter 0.039 0.037 START DATE STOP DATE (control)

Site Site 4

6A*

0.035 0.037 0.036 Site Site Site 21 29*

35 0.036 0.037 3.9 Site Site Site Site 7A 14A*

15*

17A Site 40*

RSD Mean

(%)

14 15 16 17 18 19 20 21 22 23 24 25 26 27-Mar-12 3-Apr-12 10-Apr-12 17-Apr-12 24-Apr-12 1-May-12 8-May-12 15-May-12 22-May-12 29-May-12 5-Jun-12 12-Jun-12 19-Jun-12 3-Apr-12 10-Apr-12 17-Apr-12 24-Apr-12 1 -May-12 8-May-12 15-May-12 22-May-12 29-May-12 5-Jun-12 12-Jun-12 19-Jun-12 26-Jun-12 0.027 0.043 0.023 0.040 0.030 0.038 0.045 0.043 0.026 0.040 0.025 0.028 0.034 0.029 0.042 0.021 0.040 0.030 0.042 0.051 0.044 0.023 0.038 0.027 0.029 0.036 0.027 0.045 0.020 0.034 0.029 0.039 0.043 0.042 0.026 0.043 0.031 0.027 0.033 0.027 0.039 0.022 0.035 0.029 0.036 0.039 0.042 0.025 0.040 0.027 0.029 0.031 0.026 0.029 0.042 0.040 0.021 0.022 0.041 0.039 0.030 0.030 0.040 0.040 0.045 0.043 0.045 0.043 0.025 0.026 0.044 0.045 0.031 0.027 0.031 0.031 0.033 0.034 0.026 0.037 0.021 0.036 0.026 0.036 invalid a 0.039 0.024 0.038 0.026 0.023 0.028 0.025 0.023 0.038 0.039 0.019 0.019 0.037 0.035 0.028 0.029 0.037 0.040 0.041 0.044 0.041 0.041 0.025 0.023 0.039 0.038 0.025 0.026 0.027 0.029 0.031 0.033 0.025 0.040 0.023 0.037 0.028 0.036 0.039 0.039 0.025 0.036 0.027 0.026 0.030 0.026 0.041 0.021 0.037 0.029 0.038 0.043 0.042 0.025 0.040 0.027 0.028 0.032 7.0 6.1 6.9 6.6 4.5 5.5 8.5 4.7 4.6 7.4 7.9 8.6 7.2 Mean 0.034 0.035 0.034 0.032 0.035 0.035 (a) Site 21 results were invalidated due to anomalous result (0.026 pCi/m3).

Corrective Action Program CRDR 4171246 initiated for evaluation but cause was indeterminate.

0.030 0.032 0.032 0.032 0.033 5.0 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 29

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

• units are pCi/m3 3rd Quarter START Week #

DATE (control)

STOP Site Site DATE 4

6A*

Site Site Site 7A 14A*

15*

Site Site Site Site Site 17A 21 29*

35 40*

Mean RSD

(%)

27 28 29 30 31 32 33 34 35 36 37 38 39 26-Jun-12 2-Jul-12 10-Jul-12 17-Jul-12 24-Jul-12 30-Jul-12 7-Aug-12 14-Aug-12 21-Aug-12 28-Aug-12 4-Sep-12 1 1-Sep-1 2 18-Sep-12 2-Jul-12 10-Jul-12 17-Jul-12 24-Jul-12 30-Jul-12 7-Aug-12 14-Aug-12 21-Aug-12 28-Aug-12 4-Sep-12 1 1-Sep-12 18-Sep-12 25-Sep-12 0.033 0.038 0.029 0.038 0.033 0.041 0.044 0.027 0.025 0.037 0.031 0.042 0.066 0.033 0.034 0.033 0.036 0.029 0.033 0.046 0.025 0.026 0.036 0.035 0.045 0.069 0.037 0.035 0.031 0.034 0.034 0.041 0.045 0.027 0.027 0.038 0.034 0.040 0.067 0.033 0.036 0.035 0.033 0.036 0.036 0.039 0.029 0.030 0.031 0.034 0.027 0.036 0.037 0.039 0.033 0.031 0.034 0.032 0.031 0.042 0.045 0.045 0.037 0.044 0.045 0.044 0.037 0.028 0.030 0.028 0.026 0.025 0.025 0.025 0.024 0.038 0.038 0.038 0.033 0.033 0.034 0.036 0.029 0.043 0.044 0.043 0.035 0.062 0.069 0.067 0.064 0.033 0.035 0.031 0.034 0.033 0.036 0.044 0.027 0.023 0.039 0.034 0.041 0.067 0.033 0.034 0.035 0.034 0.034 0.043 0.042 0.029 0.025 0.040 0.033 0.040 0.064 0.032 0.034 0.033 0.035 0.031 0.031 0.035 0.036 0.032 0.032 0.040 0.040 0.042 0.043 0.028 0.028 0.025 0.025 0.039 0.038 0.032 0.033 0.043 0.042 0.067 0.066 4.8 7.9 7.5 5.5 5.1 9.7 5.9 5.2 4.2 5.2 6.1 6.8 3.4 lean 0.037 0.037 0.038 0.037 0.039 0.039 0.034 4th Quarter 0.037 0.037 0.037 0.037 3.8 START Week#

DATE STOP DATE (control)

Site Site 4

6A*

Site Site Site Site Site Site Site Site RSD 7A 14A*

15*

17A 21 29*

35 40*

Mean

(%)

40 41 42 43 44 45 46 47 48 49 50 51 52 25-Sep-1 2 2-Oct-12 9-Oct-12 16-Oct-12 25-Oct-12 30-Oct-12 6-Nov-12 13-Nov-12 19-Nov-12 27-Nov-12 4-Dec-12 11-Dec-12 18-Dec-12 2-Oct-12 9-Oct-12 16-Oct-12 25-Oct-12 30-Oct-12 6-Nov-12 13-Nov-12 19-Nov-12 27-Nov-12 4-Dec-12 11-Dec-12 18-Dec-12 25-Dec-12 0.057 0.064 0.030 0.042 0.045 0.066 0.034 0.061 0.050 0.050 0.047 0.023 0.045 0.059 0.053 0.034 0.041 0.045 0.067 0.037 0.063 0.061 0.047 0.051 0.021 0.047 0.051 0.058 0.064 0.052 0.052 0.064 0.051 0.067 0.067 0.056 0.039 0.038 0.039 0.037 0.035 0.040 0.043 0.045 0.046 0.038 0.048 0.045 0.044 0.044 0.042 0.062 0.062 0.064 0.061 0.052 0.036 0.034 0.034 0.040 0.032 0.061 0.055 0.058 0.055 0.045 0.056 0.051 0.051 0.054 0.047 0.048 0.050 0.050 0.511 0.045 0.044 0.041 0.042 0.043 0.037 0.023 0.022 0.022 0.024 0.020 0.046 0.042 0.044 0.045 0.038 0.064 0.059 0.034 0.046 0.047 0.059 0.036 0.058 0.055 0.045 0.038 0.023 0.042 0.060 0.057 0.038 0.041 0.043 0.064 0.033 0.054 0.049 0.046 0.040 0.021 0.040 0.060 0.058 7.8 0.058 0.060 9.8 0.035 0.036 7.9 0.043 0.043 6.2 0.041 0.044 4.9 0.045 0.060 11.3 0.034 0.035 6.2 0.059 0.057 9.0 0.054 0.053 7.7 0.045 0.094 156.5 0.040 0.042 10.4 0.022 0.022 4.9 0.039 0.043 7.0 Mean Annual Average 0.047 0.048 0.0389 0.0398 0.048 0.046 0.048 0.083 0.041 0.047 0.045 0.044 0.050 23.9 0.03 93 0.0380 0.0401 0.0483 0.0351 0.03 79 0.03 76 0.03 71 0.039 9.0 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 30

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

• units are pCi/m 3 (control)

QUARTER Site Site Site Site Site Site Site Site Site Site ENDPOINT NUCLIDE 4

6A*

7A 14A*

15*

17A 21 29*

35 40*

27-Mar-12 Cs-134

<0.0013

<0.0030

<0.0039

<0.0013

<0.0034

<0.0023

<0.0037

<0.0019

<0.0024

<0.0018 Cs-137

<0.0027

<0.0037

<0.0046

<0.0023

<0.001 1

<0.0033

<0.0059

<0.0016

<0.0053

<0.0026 26-Jun-12 Cs-134

<0.0025

<0.0025

<0.0042

<0.0017

<0.0040

<0.0021

<0.0038

<0.0025

<0.0036

<0.0016 Cs-137

<0.0030

<0.0011

<0.0036

<0.0020

<0.0050

<0.0008

<0.0051

<0.0020

<0.0022

<0.0009 25-Sep-12 Cs-134

<0.0090

<0.0030

<0.0018

<0.0016

<0.0037

<0.0017

<0.0008

<0.0018

<0.0042

<0.0019 Cs-137

<0.0030

<0.0020

<0.0036

<0.0023

<0.0011

<0.0016

<0.0028

<0.0026

<0.0037

<0.0029 31-Dec-12 Cs-134

<0.0026

<0.0034

<0.0035

<0.0020

<0.0021

<0.0021

<0.0027

<0.0020

<0.0028

<0.0016 Cs-137

<0.0024

<0.0045

<0.0023

<0.0020

<0.0035

<0.0019

<0.0045

<0.0015

<0.0030

<0.0022 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 31

TABLE 8.4 RADIOIODINE IN AIR ls - 2 nd QUARTER ODCM required samples denoted by

• units are pCi/m3 1st Quarter required LLD <0.070 START Week #

DATE STOP DATE Site 4

(control)

Site 6A*

Site 7A Site 14A*

Site 15*

Site 17A Site 21 Site 29*

Site 35 Site 40*

1 2

3 4

5 6

7 8

9 10 11 12 13 27-Dec-Il 3-Jan-12

<0.027 3-Jan-12 10-Jan-12

<0.032 10-Jan-12 17-Jan-12

<0.047 17-Jan-12 24-Jan-12

<0.025 24-Jan-12 31-Jan-12

<0.040 31-Jan-12 7-Feb-12

<0.057 7-Feb-12 13-Feb-12

<0.050 13-Feb-12 21-Feb-12

<0.064 21-Feb-12 28-Feb-12

<0.042 28-Feb-12 6-Mar-12

<0.031 6-Mar-12 13-Mar-12

<0.029 13-Mar-12 20-Mar-12

<0.053 20-Mar-12 27-Mar-12

<0.025

<0.024

<0.045

<0.036

<0.064

<0.055

<0.026

<0.040

<0.020

<0.023

<0.051

<0.060

<0.052

<0.054

<0.026

<0.063

<0.032

<0.048

<0.060

<0.055

<0.063

<0.056

<0.065

<0.048

<0.066

<0.024

<0.063

<0.038

<0.027

<0.030

<0.060

<0.053

<0.034

<0.029

<0.067

<0.021

<0.048

<0.031

<0.051

<0.051

<0.039

<0.058

<0.053

<0.035

<0.049

<0.031

<0.046

<0.020

<0.048

<0.052

<0.033

<0.035

<0.047

<0.026

<0.037

<0.035

<0.020

<0.033

<0.027

<0.064

<0.034

<0.034

<0.029

<0.047

<0.047

<0.020

<0.029

<0.028

<0.024

<0.046

<0.037

<0.043

<0.064

<0.043

<0.042

<0.061

<0.038

<0.019

<0.062

<0.031

<0.057

<0.059

<0.024

<0.033

<0.034

<0.059

<0.026

<0.034

<0.026

<0.038

<0.060

<0.035

<0.021

<0.045

<0.025

<0.062

<0.048

<0.013

<0.065

<0.048

<0.049

<0.070

<0.056

<0.032

<0.046

<0.029

<0.029

<0.052

<0.032

<0.035

<0.032

<0.063

<0.028

<0.045

<0.027

<0.020

<0.039

<0.029 2nd Quarter START Week#

DATE STOP DATE Site 4

(control)

Site 6A*

Site 7A Site 14A*

required LLD

<0.070 Site 15*

Site 17A Site 21 Site 29*

Site 35 Site 40*

14 15 16 17 18 19 20 21 22 23 24 25 26 27-Mar-12 3-Apr-12

<0.046 3-Apr-12 10-Apr-12

<0.036 10-Apr-12 17-Apr-12

<0.062 17-Apr-12 24-Apr-12

<0.061 24-Apr-12 1-May-12

<0.029 1 -May-12 8-May-12

<0.031 8-May-12 15-May-12

<0.048 15-May-12 22-May-12

<0.062 22-May-12 29-May-12

<0.042 29-May-12 5-Jun-12

<0.028 5-Jun-12 12-Jun-12

<0.025 12-Jun-12 19-Jun-12

<0.030 19-Jun-12 26-Jun-12

<0.032

<0.033

<0.048

<0.025

<0.063

<0.035

<0.048

<0.059

<0.028

<0.043

<0.052

<0.018

<0.057

<0.045

<0.065

<0.066

<0.053

<0.040

<0.027

<0.041

<0.047

<0.032

<0.062

<0.058

<0.066

<0.058

<0.052

<0.031

<0.032

<0.031

<0.041

<0.042

<0.025

<0.062

<0.062

<0.034

<0.029

<0.035

<0.035

<0.028

<0.053

<0.049

<0.061

<0.043

<0.025

<0.058

<0.044

<0.030

<0.068

<0.044

<0.036

<0.059

<0.054

<0.029

<0.033

<0.029

<0.050

<0.034

<0.034

<0.060

<0.039

<0.028

<0.026

<0.030

<0.024

<0.033

<0.041

<0.037

<0.045

<0.043

<0.069

<0.052

<0.034

<0.030

<0.042

<0.035

<0.049

<0.055

<0.043

<0.026

<0.029

<0.028

<0.052

<0.031

<0.022

<0.040

<0.044

<0.023

<0.020

<0.032

<0.032

<0.034

<0.049

<0.062

<0.059

<0.008

<0.047

<0.043

<0.029

<0.036

<0.065

<0.064

<0.056

<0.047

<0.052

<0.026

<0.033

<0.033

<0.031

<0.032

<0.025

<0.066

<0.057

<0.027

<0.007

<0.031

<0.019

<0.033 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 32

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

• units are pCi/m3 3rd Quarter START Week #

DATE STOP DATE Site 4

(control)

Site 6A*

Site 7A Site 14A*

required LLD <0.070 Site 15*

Site 17A Site 21 Site 29*

Site 35 Site 40*

27 28 29 30 31 32 33 34 35 36 37 38 39 26-Jun-12 2-Jul-12

<0.029 2-Jul-12 10-Jul-12

<0.034 10-Jul-12 17-Jul-12

<0.049 17-Jul-12 24-Jul-12

<0.019 24-Jul-12 30-Jul-12

<0.034 30-Jul-12 7-Aug-12

<0.052 7-Aug-12 14-Aug-12

<0.039 14-Aug-12 21-Aug-12

<0.064 21-Aug-12 28-Aug-12

<0.055 28-Aug-12 4-Sep-12

<0.045 4-Sep-1 2 11-Sep-12

<0.037 11-Sep-12 18-Sep-12

<0.046 18-Sep-12 25-Sep-12

<0.042

<0.059

<0.039

<0.055

<0.051

<0.049

<0.049

<0.066

<0.024

<0.030

<0.056

<0.033

<0.069

<0.038

<0.057

<0.044

<0.050

<0.064

<0.041

<0.038

<0.046

<0.065

<0.036

<0.055

<0.048

<0.057

<0.069

<0.031

<0.052

<0.023

<0.048

<0.056

<0.051

<0.036

<0.061

<0.034

<0.050

<0.044

<0.052

<0.029

<0.057

<0.027

<0.056

<0.032

<0.049

<0.018

<0.058

<0.020

<0.069

<0.036

<0.051

<0.023

<0.070

<0.031

<0.028

<0.033

<0.028

<0.021

<0.037

<0.029

<0.033

<0.026

<0.044

<0.026

<0.062

<0.030

<0.064

<0.032

<0.055

<0.055

<0.057

<0.037

<0.057

<0.070

<0.045

<0.032

<0.060

<0.056

<0.057

<0.038

<0.027

<0.047

<0.025

<0.031

<0.023

<0.035

<0.024

<0.024

<0.043

<0.029

<0.052

<0.021

<0.068

<0.051

<0.031

<0.064

<0.039

<0.056

<0.070

<0.064

<0.070

<0.021

<0.069

<0.021

<0.050

<0.023

<0.022

<0.066

<0.032

<0.026

<0.035

<0.027

<0.049

<0.021

<0.043

<0.041

<0.046

<0.033 4th Quarter START Week#

DATE STOP DATE Site 4

(control)

Site 6A*

required LLD

<0.070 Site 15*

Site 7A Site 14A*

Site 17A Site 21 Site 29*

Site 35 Site 40*

40 41 42 43 44 45 46 47 48 49 50 51 52 25-Sep-12 2-Oct-12

<0.026 2-Oct-12 9-Oct-12

<0.037 9-Oct-12 16-Oct-12

<0.030 16-Oct-12 25-Oct-12

<0.022 25-Oct-12 30-Oct-12

<0.032 30-Oct-12 6-Nov-12

<0.031 6-Nov-12 13-Nov-12

<0.014 13-Nov-12 19-Nov-12

<0.038 19-Nov-12 27-Nov-12

<0.031 27-Nov-12 4-Dec-12

<0.037 4-Dec-12 11 -Dec-12

<0.034 1 1-Dec-12 18-Dec-12

<0.034 18-Dec-12 25-Dec-12

<0.043

<0.054

<0.053

<0.054

<0.061

<0.036

<0.048

<0.046

<0.036

<0.046

<0.052

<0.058

<0.047

<0.068

<0.053

<0.066

<0.045

<0.030

<0.052

<0.066

<0.025

<0.037

<0.047

<0.070

<0.052

<0.020

<0.058

<0.027

<0.020

<0.040

<0.037

<0.040

<0.019

<0.061

<0.029

<0.065

<0.020

<0.025

<0.025

<0.067

<0.022

<0.068

<0.062

<0.021

<0.036

<0.061

<0.025

<0.036

<0.059

<0.061

<0.033

<0.062

<0.042

<0.032

<0.008

<0.027

<0.067

<0.040

<0.027

<0.025

<0.028

<0.012

<0.040

<0.065

<0.037

<0.063

<0.047

<0.062

<0.068

<0.034

<0.044

<0.043

<0.019

<0.037

<0.052

<0.036

<0.056

<0.066

<0.045

<0.025

<0.043

<0.030

<0.058

<0.037

<0.031

<0.069

<0.038

<0.064

<0.025

<0.026

<0.036

<0.060

<0.064

<0.055

<0.061

<0.029

<0.046

<0.055

<0.028

<0.036

<0.049

<0.060

<0.064

<0.069

<0.058

<0.026

<0.030

<0.033

<0.067

<0.030

<0.024

<0.054

<0.039

<0.026

<0.026

<0.028

<0.037

<0.009 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 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 LOCAL RESIDENCE (Site #47)*

NONE AVAILABLE red cabbage 20-Jan-12

<46

<41

<45 green cabbage 20-Jan-12

<60

<53

<65 green cabbage 10-Feb-12

<51

<48

<75 red cabbage 10-Feb-12

<60

<55

<39 COMMERCIAL green cabbage 15-Mar-12

<47

<45

<41 FARM green cabbage 13-Apr-12

<42

<58

<49 (Site #62)*

green cabbage 14-Nov-12

<46

<35

<57 green cabbage 20-Dec-12

<43

<45

<17 savoy cabbage 20-Dec-12

<49

<51

<72 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 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 Local Resident Goats (Site #51)*

29-Mar-12 26-Apr-12 24-May-12 22-Jun-12 26-Jul-12 24-Aug-12 20-Sep-12 25-Oct-12 15-Nov-12 14-Dec-12

<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

<1

<1

<1

<1

<1

<1

<1

<1

<1 Local Resident Goats (Site #53)*

15-Mar-12 20-Apr-12 17-May-12 14-Jun-12 19-Jul-12 16-Aug-12 13-Sep-12 19-Oct-12 14-Nov-12 14-Dec-12

<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

<I

<1

<1

<1

<3

<3

<3

<3

<3

<3

<3

<3

<3

<3

<1

<1

<1

<1

<1

<1

<1

<1

<1

<1 Local Resident Goats (Site #54) 13-Jan-12 10-Feb-12 23-Mar-12 13-Apr-12 I 1 -May-12 07-Jun-12 12-Jul-12 06-Sep-12 11-Oct-12 09-Nov-12 07-Dec-12

<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

• Site #51 did not have an available sample on land owner 12-14-2012 due to not being able to contact the PVNGS. ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 35

TABLE 8.8 DRINKING WATER ODCM required samples denoted by

• units are pCi/liter

<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 Tritium Gross Beta SAMPLE LOCATION I.

LOCAL RESIDENCE (Site #48)

• 31-Jan-12

<13

<15

<26

<14

<23

<13

<19

<12

<9

<13

<43

<15 28-Feb-12

<13

<9

<20

<12

<29

<10

<19

<10

<10

<12

<30

<15 27-Mar-12

<12

<9

<19

<10

<21

<11

<18

<9

<9

<11

<33

<13 24-Apr-12

<10

<11

<26

<12

<23

<12

<19

<9

<10

<10

<36

<15 29-May-12

<11

<13

<26

<14

<25

<13

<26

<10

<12

<13

<33

<13 26-Jun-12

<13

<12

<19

<13

<26

<12

<19

<10

<10

<11

<35

<13 30-Jul-12

<11

<9

<26

<14

<26

<13

<21

<11

<9

<14

<33

<15 28-Aug-12

<10

<10

<23

<15

<26

<11

<18

<9

<11

<12

<35

<10 25-Sep-12

<11

<10

<25

<9

<21

<10

<19

<11

<10

<11

<35

<15 30-Oct-12

<13

<11

<21

<15

<25

<13

<23

<12

<12

<10

<44

<15 27-Nov-12

<12

<10

<22

<14

<30

<13

<20

<8

<11

<11

<26

<12 31-Dec-12

<8

<11

<21

<11

<30

<11

<22

<10

<10

<11

<37

<13

<3.0

<3.7

<259

<3.8

<3.0

<3.2

<258

<3.2

<3.3 3.6 _ 2.2

<305 4.4 -2.1 5.1 -2.1 5.9 -2.1

<300 4.2 + 2.0 LOCAL RESIDENCE (Site #55) 31-Jan-12

<15

<10

<22

<11

<24

<11

<18

<10

<11

<12

<36

<12 28-Feb-12

<10

<10

<23

<8

<30

<11

<18

<9

<9

<11

<34

<9 27-Mar-12

<7

<7

<16

<8

<15

<9

<13

<7

<8

<8

<24

<11 24-Apr-12 8

<11

<11

<24

<14

<23

<12

<19

<12

<11

<12

<41

<12 29-May-12

<12

<10

<27

<13

<28

<12

<15

<12

<10

<11

<40

<11 26-Jun-12

<11

<10

<19

<10

<30

<9

<16

<10

<9

<13

<34

<11 30-Jul-12

<13

<9

<24

<15

<25

<12

<22

<11

<12

<15

<43

<15 28-Aug-12

<12

<10

<19

<12

<23

<10

<17

<11

<10

<13

<37

<15 25-Sep-12

<15

<14

<30

<11

<30

<13

<23

<12

<13

<14

<50

<15 30-Oct-12

<10

<10

<21

<10

<22

<12

<20

<11

<11

<12

<36

<15 27-Nov-12

<11

<12

<22

<13

<24

<12

<20

<11

<10

<11

<39

<15 31-Dec-12

<14

<11

<25

<13

<26

<12

<24

<12

<12

<12

<49

<15 5.0 +/- 1.5

<2.5

<259

<3.2 2.3 +/- 1.3 5.2 +/- 1.5

<259 3.0 +/- 1.4 2.8 +/- 1.4 3.0 +/- 1.4

<304 5.1 +/- 1.6 5.2 +/- 1.4 7.6 +/- 1.6

<298 6.5 +/- 1.6 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 36

TABLE 8.8 DRINKING WATER ODCM required samples denoted by

• units are pCi/liter

<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 Tritium Gross Beta SAMPLE LOCATION LOCAL RESIDENCE (Site #46)

• 31-Jan-12

<15

<12

<22

<15

<28

<13

<23

<13

<10

<15 28-Feb-12

<14

<11

<21

<15

<30

<14

<15

<11

<10

<12 27-Mar-12

<14

<13

<26

<14

<30

<13

<21

<13

<9

<12 24-Apr-12

<13

<12

<24

<13

<25

<9

<16

<10

<11

<12 29-May-12

<9

<11

<22

<15

<27

<11

<18

<12

<12

<12 26-Jun-12

<10

<10

<28

<15

<27

<12

<17

<12

<11

<11 30-Jul-12

<12

<10

<22

<11

<22

<12

<18

<9

<9

<11 28-Aug-12

<15

<13

<21

<13

<26

<12

<18

<11

<11

<12 25-Sep-12

<11

<12

<23

<15

<24

<11

<20

<10

<10

<11 30-Oct-12

<13

<11

<26

<12

<30

<12

<21

<11

<9

<14 27-Nov-12

<14

<13

<29

<13

<26

<14

<22

<10

<11

<13 31-Dec-12

<7

<10

<19

<8

<23

<8

<17

<10

<9

<8

<42

<11

<41

<14

<38

<15

<37

<15

<42

<15

<43

<15

<34

<15

<48

<13

<38

<10

<42

<14

<39

<14

<35

<15 3.1 +/- 1.4

<2.4

<258

<3.0 3.0 +/- 1.4

<2.0

<257 3.8 +/- 1.4 2.2 +/- 1.3

<2.0

<307 2.34+/- 1.3 3.3 +/- 1.3 4.5 1.3

<299 3.3 +/-1.3 LOCAL RESIDENCE (Site #49)

• 31-Jan-12

<10

<13

<18

<14

<30

<12

<19

<13

<11

<11 28-Feb-12

<13

<13

<30

<15

<28

<14

<19

<11

<11

<11 27-Mar-12

<12

<11

<25

<15

<25

<13

<24

<11

<12

<12 24-Apr-12

<12

<13

<21

<14

<29

<14

<22

<11

<11

<13 29-May-12

<10

<9

<15

<10

<19

<10

<18

<10

<9

<10 26-Jun-12

<11

<12

<29

<10

<26

<11

<21

<11

<10

<13 30-Jul-12

<13

<9

<27

<13

<29

<13

<23

<11

<13

<14 28-Aug-12

<11

<11

<24

<15

<30

<10

<18

<10

<11

<11 25-Sep-12

<11

<11

<24

<12

<18

<10

<21

<12

<10

<12 30-Oct-12

<13

<13

<21

<9

<29

<14

<23

<12

<11

<15 27-Nov-12

<10

<10

<20

<15

<23

<12

<18

<10

<10

<10 31-Dec-12

<11

<11

<22

<15

<25

<10

<17

<11

<10

<11

<46

<15

<45

<13

<41

<15

<47

<15

<33

<14

<34

<15

<46

<10

<38

<13

<33

<15

<43

<11

<44

<13

<36

<13

<2.1

<2.4

<257

<3.0

<1.9

<2.0

<257 2.6 +/- 1.4

<2.0

<2.0

<304 2.1 1.3 2.41 + 1.3 3.0 1.2

<299 2.3 1.3 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 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

<60

<15

<2000 LOCATION COLLECTED Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Tritium 31-Jan-12

<10

<11

<26

<13

<24

<13

<19

<11

<11

<13

<35

<15

<256 WELL 27ddc 24-Apr-12

<9

<9

<20

<11

<21

<12

<17

<10

<9

<10

<36

<15

<255 (Site #57)*

31-Jul-12

<12

<13

<23

<15

<24

<12

<21

<12

<11

<11

<37

<14

<302 30-Oct-12

<12

<12

<23

<11

<28

<13

<19

<11

<11

<12

<43

<15

<297 31-Jan-12

<13

<8

<27

<14

<30

<15

<21

<13

<11

<13

<44

<15

<258 WELL 34abb 24-Apr-12

<10

<11

<24

<11

<25

<12

<18

<10

<10

<11

<32

<15

<256 (Site #58)*

31-Jul-12

<11

<11

<24

<12

<22

<12

<17

<11

<10

<11

<35

<15

<303 30-Oct-12

<9

<9

<17

<9

<22

<11

<16

<9

<9

<9

<31

<15

<297 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 38

TABLE 8.10 SURFACE WATER ODCM required samples denoted by

• units are pCi/liter DATE

<15

<15

<30

<15

<30

<15

<30

<15

<15

<18

<60

<15

<3000 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 SAMPLE LOCATION 45ACRE 31-Jan-12

<11

<10

<23

<14

<30

<14

<21 21 +/-_

Ia

<12

<14

<45

<13

<258 RESERVOIR 24-Apr-12

<15

<10

<24

<13

<29

<13

<19 50 +/- 14a

<11

<12

<46

<15

<257 (Site #61)*

31-Jul-12

<15

<11

<23

<14

<25

<12

<19 12 +/- 10

<12

<12

<38

<13

<306 30-Oct-12

<13

<11

<18

<10

<27

<13

<19

<13

<11

<15

<37

<13

<301 85 ACRE 31-Jan-12

<10

<9

<18

<15

<24

<9

<18

<10

<10

<10

<30

<12

<258 RESERVOIR 24-Apr-12

<15

<11

<19

<14

<29

<14

<20 32 +/-15a

<13

<15

<46

<13

<258 (Site #60)*

31-Jul-12

<12

<12

<18

<14

<29

<11

<18 10+/- 10

<10

<12

<46

<15

<305 30-Oct-12

<11

<12

<23

<13

<21

<10

<14

<13

<9

<10

<35

<10

<300 EVAP POND 1 (Site #59)

• Empty for Refurbishment EVAPPOND2 31-Jan-12

<12

<10

<18

<8

<30

<12

<17

<12

<10

<12

<42

<15 966 172 (Site #63)

• 24-Apr-12

<11

<9

<21

<12

<24

<10

<19

<13

<10

<12

<34

<15 1015 172 CELL2A 31-Jul-12

<13

<13

<23

<14

<27

<15

<25

<13

<10

<14

<41

<8 928 190 30-Oct-12

<14

<12

<26

<10

<30

<13

<21

<12

<10

<12

<37

<12 1038 201 CELL2B 31-Jan-12

<12

<10

<25

<10

<25

<11

<19 34 +/- I1a

<10

<12

<39

<10 1055 +/-173 24-Apr-12

<13

<12

<25

<13

<30

<12

<21

<12

<10

<12

<40

<14 1038 +/- 171 31-Jul-12

<10

<10

<27

<11

<30

<13

<15 16+/- 11

<10

<11

<38

<13 1350+/- 198 30-Oct-12

<10

<12

<28

<13

<23

<12

<22

<14

<11

<14

<32

<15 1041 +/- 199 EVAP POND 3 (Site #64)

• CELL 3A CELL 3B 31-Jan-12 24-Apr-12 31-Jul-12 30-Oct-12

<9

<10

<25

<12

<29

<10

<18

<10

<9

<11

<9

<27

<12

<25

<11

<18

<9

<9

<12

<11

<30

<14

<28

<11

<21

<10

<10

<13

<12

<22

<13

<23

<13

<16

<10

<9

<14

<12

<13

<11

<33

<37

<35

<41

<15 738 +/- 168

<11 874 +/- 169

<13 931 +/- 191

<14 900 +/- 199 31-Jan-12

<11

<11

<29

<15

<30

<12

<20

<10

<11

<14

<41

<13 867 +/- 170 24-Apr-12

<13

<11

<27

<14

<27

<13

<22

<12

<12

<14

<44

<12 773 +/- 168 31-Jul-12

<12

<11

<25

<15

<29

<13

<20

<10

<9

<14

<42

<11 959 +/- 191 30-Oct-12

<12

<11

<28

<14

<30

<12

<18

<12

<10

<12

<41

<12 562 +/- 192 (a) The sample was recounted and indicated >20 pCi/liter. The 1-131 reporting level was exceeded but is not a result of plant effluents. Refer to Corrective Action Program CRDR 4051062 for the evaluation.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 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 Tritium**

LOCATIO WRF INFLUENT grab sample 3-Jan-12 10-Jan-12 17-Jan-12 24-Jan-12 31-Jan-12 7-Feb-12 13-Feb-12 21-Feb-12 28-Feb-12 6-Mar-12 13-Mar-12 19-Mar-12 26-Mar-12 2-Apr-12 10-Apr-12 17-Apr-12 24-Apr-12 1-May-12 8-May-12 15-May-12 22-May-12 29-May-12 5-Jun-12 12-Jun-12 19-Jun-12 26-Jun-12 02-Jul-12 10-Jul-12 17-Jul-12

<13

<12

<12

<13

<11

<14

<14

<11

<15

<12

<10

<12

<12

<20

<11

<29

<13

<24 14 +/- 9

<11

<11

<20

<12

<24

<11

<18

<11

<10

<12

<24

<12

<30

<12

<23 44 +/- 14

<11

<9

<27

<11

<30

<11

<19 8 +/- 7

<10

<13

<28

<15

<25

<13

<20 22 +/- 11

<11

<11

<27

<14

<30

<12

<19 19 +/- 11

<11

<13

<27

<15

<28

<13

<25 41 +/- 17

<14

<12

<26

<15

<24

<11

<19 32 +/- 10

<10

<12

<23

<12

<18

<13

<20 36 +/- 13

<11

<11

<22

<8

<20

<11

<17 49 +/- 11

<10

<12

<22

<13

<22

<10

<17 53 +/- 13

<9

<8

<20

<12

<29

<10

<19 93 +/- 17

<10 WRF OOS WRF OOS

<14

<14

<12

<12

<10

<13

<9

<15

<9

<15

<11

<10

<12

<11

<11

<13

<21

<15

<22

<11

<22 18 +/- 10

<11

<11

<29

<15

<23

<12

<18 40 +/- 13

<11

<14

<29

<15

<26

<13

<22 21 +/- 15

<13

<11

<24

<15

<26

<15

<20 54 +/- 14

<12

<12

<28

<13

<28

<10

<23 27 +/- 12

<13

<13

<25

<14

<27

<10

<24 11 +/- 10

<12

<10

<21

<13

<20

<9

<17 13 +/- 9

<10

<13

<21

<14

<27

<11

<19 9 +/- 10

<11

<10

<19

<15

<20

<11

<19

<11

<9

<15

<26

<11

<21

<12

<19 22 +/- 12

<14

<11

<25

<14

<30

<14

<20 13 +/- 10

<12

<10

<18

<12

<26

<11

<17

<11

<10

<12

<19

<15

<29

<12

<20

<13

<11

<9

<20

<11

<28

<11

<20

<11

<9

<10

<20

<15

<26

<11

<21 14 +/- 12

<10

<11

<46

<15

<9

<36

<15

<13

<41

<14

<12

<35

<14

<14

<40

<12

<13

<41

<10

<15

<43

<14

<13

<40

<12

<10

<49

<15

<12

<29

<15

<13

<38

<14

<10

<41

<15

<11

<37

<14

<11

<44

<14

<15

<43

<13

<14

<41

<15

<12

<46

<13

<12

<46

<13

<11

<35

<15

<15

<35

<15

<12

<32

<12

<12

<41

<13

<13

<37

<13

<10

<28

<14

<14

<40

<8

<9

<36

<9

<11

<39

<12

<264

<266

<284

<264

<273

<264

• • monthly composite PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 40

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**

WRF INFLUENT 24-Jul-12 3 1-Jul-12 7-Aug-12 14-Aug-12 21-Aug-12 28-Aug-12 4-Sep-i 2 1 1-Sep-12 18-Sep-i 2 25-Sep-12 2-Oct-i 2 9-Oct-12 16-Oct-12 23-Oct-12 30-Oct-12 6-Nov-12 13-Nov-12 19-Nov-12 27-Nov-12 4-Dec-12 11-Dec-12 18-Dec-12 24-Dec-12 31-Dec-12

<12

<8

<26

<9

<25

<10

<18 14 +/-9

<10

<10

<11

<23

<12

<25

<10

<17 11 +/-10

<9

<10

<10

<20

<9

<29

<10

<20 22 +/-12

<12

<10

<13

<22

<12

<24

<12

<21 21 +/-10

<10

<9

<11

<23

<14

<20

<11

<15 32 +/-10

<9

<11

<10

<25

<13

<25

<11

<17 27 +/-8

<10

<10

<12

<28

<14

<23

<15

<17

<14

<9

<11

<10

<20

<10

<28

<11

<20 23 +/- 9

<10

<8

<10

<20

<9

<21

<10

<14 39 +/- 9

<8

<9

<10

<28

<13

<29

<12

<18 17 +/- 10

<9

<11

<13

<21

<12

<27

<13

<17 11 +/- 10

<12

<11

<11

<21

<12

<26

<12

<18 17 +/- 12

<11 WRF OOS

<10

<11

<24

<15

<22

<11

<17 18 +/-9

<10

<8

<9

<21

<11

<24

<11

<15 21 +/-10

<10

<12

<12

<27

<12

<30

<12

<22 23+/- 14

<13

<12

<13

<23

<13

<26

<14

<19 15+/- 10

<10

<14

<11

<20

<13

<25

<14

<24 21 +/-10

<13

<12

<11

<26

<15

<28

<12

<17 20 9

<11

<10

<12

<22

<15

<28

<11

<17 16+/- 10

<9

<14

<12

<30

<14

<30

<12

<24 24+/- 10

<12

<14

<10

<29

<12

<30

<11

<21 29+/- 12

<13

<11

<9

<17

<9

<26

<11

<18 46+/- 11

<9

<11

<13

<28

<11

<25

<10

<20 44 13

<13

<11

<10

<14

<13

<9

<9

<14

<13

<11

<12

<11

<9

<13

<11

<11

<13

<15

<16

<13

<13

<14

<10

<10

<32

<32

<35

<32

<33

<40

<41

<32

<28

<38

<37

<43

<33

<28

<41

<37

<55

<37

<39

<31

<51

<32

<40

<12

<15

<15

<15

<15

<10

<11

<15

<15

<13

<15

<15

<13

<13

<38

<13

<15

<13

<14

<12

<13

<13

<15

<306

<329

<314

<307

<308

<312

• • monthly composite PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 41

TABLE 8.10 SURFACE WATER ODCM required samples denoted by

• units are pCi/liter 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 SAMPLE LOCATION SEDIMENTATION BASIN 2 20-Mar-12 17-Jul-12 31-Jul-12 28-Aug-12 11-Sep-12 18-Sep-12 25-Sep-12

<10

<10

<22

<14

<23

<11

<15

<9

<11

<11

<38

<15

<10

<10

<21

<14

<19

<8

<19

<8

<12

<14

<37

<13

<11

<10

<26

<15

<27

<10

<22

<10

<10

<12

<41

<12

<13

<11

<24

<15

<29

<12

<21

<11

<10

<14

<42

<15

<13

<11

<22

<15

<25

<12

<20

<11

<11

<13

<43

<14

<11

<10

<20

<12

<18

<10

<19

<11

<11

<11

<40

<15

<10

<10

<26

<15

<20

<11

<18

<11

<12

<16

<41

<14

<275

<348

<311

<347

<325

<327

<321 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 42

TABLE 8.11 SLUDGE/SEDIMENT ODCM required samples denoted by

• units are pCi/kg, wet SAMPLE LOCATION DATE COLLECTED

<150

<180 1-131 Cs-134 Cs-137 In-lll WRF CENTRIFUGE WASTE SLUDGE 3-Jan-12 10-Jan-12 17-Jan-12 24-Jan-12 31 -Jan-12 6-Feb-12 13-Feb-12 20-Feb-12 27-Feb-12 5-Mar-12 12-Mar-12 19-Mar-12 26-Mar-12 2-Apr-12 10-Apr-12 17-Apr-12 23-Apr-12 1-May-12 7-May-12 15-May-12 21-May-12 29-May-12 5-Jun-12 12-Jun-12 19-Jun-12 26-Jun-12 2-Jul-12 10-Jul-12 17-Jul-12 24-Jul-12 31-Jul-12 7-Aug-12 601 +/- 201 524 +/- 182 408 - 49 547+/- 147 438+/- 162 926 +/- 203 673 - 192 1116: -237 629 +/- 230 543 +/- 142 768 +/- 216 1741 : 341 OOS OOS 311 +/- 105 400 +/- 148 1673 +/- 366 1686 +/- 278 2013 +/- 364 1191 +/- 263 870 +/- 236 587 +/- 247 593 +/- 184 461 +/- 172 762 +/- 159 808 +/- 200 791 +/- 175 476 +/- 170 479 +/- 175 321 +/- 175 290 +/- 135 455 +/- 142

<111

<109

<139

<81

<149

<69

<142

<123

<142

<114

<138

<149

<174

<170

<174

<39

<143

<150

<140

<171

<133

<86

<114

<168

<85

<124

<149

<47

<139

<145

<141

<147

<145

<130

<122

<82

<118

<138

<119

<139

<146

<116

<160

<180

<142

<81

<96

<180

<170

<124

<164

<164

<126

<176

<174

<171

<48

<167

<161

<166 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 43

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-Ill 4

WRF CENTRIFUGE WASTE SLUDGE 14-Aug-12 21-Aug-12 28-Aug-12 4-Sep-12 11-Sep-12 18-Sep-12 25-Sep-12 2-Oct-12 9-Oct-12 16-Oct-12 23-Oct-12 30-Oct-12 6-Nov-12 13-Nov-12 19-Nov-12 27-Nov-12 4-Dec-12 24-Dec-12 31-Dec-12 322 +/- 182 568 +/- 172 893 +/- 208 832 +/- 192 920 +/- 229 725 +/- 191 655 +/- 164 810 +/- 236 593 +/- 151 OOS 162 +/- 147 246 +/- 148 536 +/- 197 450 +/- 190 630 +/- 162 531 +/- 200 6521 +/- 171 1244 +/- 241 1079 +/- 232

<143

<108

<148

<121

<147

<141

<129

<113

<131

<40

<148

<149

<123

<119

<140

<138

<117

<101

<153

<168

<165

<171

<107

<167

<99

<176

<170

<18

<130

<30

<162

<80

<178

<130

<86

<47 SEDIMENTATION BASIN 2 No samples taken in 2012

• 3 day composite due to the outage PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 44

TABLE 8.11 SLUDGE/SEDIMENT COOLING TOWER SLUDGE UNIT APPROXIMATE ISOTOPE ACTIVITY RANGE SAMPLE TYPE CYCLE VOLUME (yd3)

(pCi/g)

U1R16 314 Cs-134 314 Cs-137

<MDA Towers/canal sludge Cs-137 U3R16 316 Cs-134 316 Cs-134

<MDA Towers/canal sludge Cs-137 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 45

TABLE 8.12 HARD-TO-DETECT RADIONUCLIDES RESULTS Units are pCi/liter Sample Location Unit 1 (outside RCA)

Unit 2 (inside RCA)

Unit 3 (inside RCA)

Well number APP-12 HOB H1l Sample Date 10/23/2012 10/23/2012 10/23/2012 C-14

<51

<51

< 49 Fe-55

< 12

< 13

< 16 Ni-63

< 3.9

<4.0

< 3.5 Sr-90

< 0.4

< 0.4

< 0.4 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 46

FIGURE 8.1 GROSS BETA IN AIR, 1st-2nd Quarter 0.070 0.060 0.050

-0 4Site 4 Site 6A*

0.040Site 7A

-'-Site 14A*

U

-- Site 15*

l0.030

• Site 17A

- Site 21 0.020

-"+Site 29*

-Site 35 0.010

• Site 40*

This data point of zero (0) is due to invalid data Mean 0.000

ý÷Me r'

~ ~

~

~

~

~

~

~

~

~

~

0 e'

WeI e

si e

)e~ei

~

c c

i c

i c

i cq c7N 1.

I rS~.4 cq N

N PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 47

FIGURE 8.2 GROSS BETA IN AIR, 3 rd-4 th Quarter 0.080 0.070 0.060 0.050 0.040 0.030 0.020

- Site 4

--w Site 6A*

Site 7A Site 14A*

---

Site 15*

Site 17A Site 21 Site 29*

-Site 35

-Site 40*

Mean 0.010 0.000 0 0 0

0

~~C C4 r2 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 48

FIGURE 8.3 HISTORICAL GROSS BETA IN AIR (WEEKLY SYSTEM AVERAGES)

Gross Beta in Air 2002-2012 (weekly average) 1.000 Elevated due to Fukushima-Daiichi releases 0.355 0.100 0.010 00 01, 0

0 z 0 0

z a 0 z 0 z

0 z

0 0

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 49

FIGURE 8.4 HISTORICAL GROSS BETA IN AIR (ANNUAL SITE TO SITE COMPARISONS) COMPARED TO PRE-OP 0.050 0.040

-- 0.030 0.020 0.010

-Site 4

Site 6A Site 14A

-Site 15

-Site 17A

-Site 21

-Site 29 Site 35

-Site 40 mr'J

-4

-4 00

-4 U*

r.8 r,4 CD

-4 0r4

-4

-4 0

-4 0

a)

I?

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. This was a stepwise increase that has carried forward since 1994.

The 2011 annual average values are higher due to the Fukushima-Daiichi releases.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 50

FIGURE 8.5 GROSS BETA IN DRINKING WATER I-.a' Ua.

8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 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)

The action level is 30 pCi/liter PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 51

FIGURE 8.6 EVAPORATION POND TRITIUM ACTIVITY 4000 3000

.* 2000 1000 0

• Evaporation Pond #2 underwent refurbishment starting in December 2008 and was subsequently split into Ponds 2A and 2B. This accounts for the gap in sampling.

• • Evaporation Pond #1 underwent refurbishment in 2012 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 52

FIGURE 8.7 SEDIMENTATION BASIN 2 Cs-137 250 200 0150 100 50 0

238 67 70 63 60 60 66 70 40 47 640 4

17 1976 1984 1990 1992 1993 1994 1995 1996 1997 1998 2001 2002 2003 2005 2008 2011 onsite onsite soil avg. soil avg.

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

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 53

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 fifty 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 2012 are presented in Table 9.2. Historical environmental gamma radiation results for 1985 through 2012 are presented in graphical form on Figure 9.1 (excluding transit control TLD #45).

Figure 9.2 depicts the environmental TLD results from 2012 as compared to the pre-operational TLD results (excluding sites #41 and #43, as they were deleted and later assigned to a new location, and #46-50, as they 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 - 2012 54

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 36 37 38 39 40 41 42 43 44*

LOCATION E30 ENE24 E21 E16 ESE11 SSE31 SE7 SSE4 S5 SE5 ESE5 E5 NI NNE2 NE2 ENE2 E2 ESE2 SE2 SSE2 S3 SSW3 W5 SW4 WSW5 SSW4 SW1 WSW1 Wi WNW1 NW1 NNWl NW4 NNW5 NNW8 N5 NNE5 NE5 ENE5 N2 ESE3 N8 NE5 ENE35 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.

3 5 5th Ave. and Elliot Rd.

33 9th Ave. and Dobbins Rd.

33 9th Ave. and Buckeye-Salome Rd.

N site boundary NNE site boundary NE site boundary, WRF access road ENE site boundary E site boundary ESE site boundary SE site boundary SSE site boundary S site boundary SSW site boundary N of Elliot Rd N of Elliot Rd N of Elliot Rd 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 395'h Ave. and Van Buren St.

Tonopah Wintersburg Rd. and Van Buren St.

3 63 rd Ave. and Van Buren St.

3 5 5th Ave. and Buckeye Rd.

34 3 rd Ave. N of Broadway Rd.

Wintersburg Arlington School Ruth Fisher School Winters Well School El Mirage PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 55

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

TLD SITE 45**

46 47 48 49 50 LOCATION Onsite ENE30 E35 E24 ENE 11 WNW5 LOCATION DESCRIPTION Central Laboratory (lead pig)

Litchfield Park School Littleton School Jackrabbit Trail Palo Verde Rd.

S of Buckeye-Salome Rd.

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

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

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 56

TABLE 9.2 ENVIRONMENTAL TLD RESULTS Units are mirem/std qtr TLD NO 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Average 1

22.2 25.3 24.8 26.4 24.7 2

19.4 23.1 22.7 23.1 22.1 3

23.1 24.6 23.4 24.7 24.0 4

22.0 25.1 24.7 24.1 24.0 5

20.2 23.0 22.5 22.1 22.0 6 (control) 24.0 27.7 26.6 27.0 26.3 7

22.9 24.4 25.0 27.2 24.9 8

21.9 23.9 23.3 25.3 23.6 9

26.1 27.4 27.6 28.9 27.5 10 21.3 23.4 23.8 24.1 23.2 11 22.5 24.9 23.8 26.6 24.5 12 21.4 22.9 22.6 24.4 22.8 13 23.9 25.3 26.0 27.6 25.7 14 23.2 24.1 24.7 26.5 24.6 15 20.8 24.0 22.8 24.9 23.1 16 20.2 23.7 23.5 22.1 22.4 17 22.4 24.3 25.0 26.5 24.6 18 21.5 23.1 23.9 24.1 23.2 19 22.8 26.1 26.3 27.4 25.7 20 22.5 24.5 24.3 25.2 24.1 21 23.2 27.9 25.7 26.2 25.8 22 25.1 26.6 26.1

• 25.9 23 21.4 23.2 23.4 25.8 23.5 24 20.3 21.7 23.2 23.4 22.2 25 22.4 23.4 23.1 25.3 23.6 26 26.3 30.2 25.7 27.8 27.5 27 23.4 28.6 27.0 29.6 27.2 28 24.0 26.6 25.3 27.5 25.9 29 23.8 24.6 24.0 24.7 24.3 30 22.3 24.7 26.1 26.7 25.0 31 21.5 25.1 23.7 23.9 23.6 32 23.2 27.4 27.0 26.5 26.0 33 24.3 27.0 26.0 24.8 25.5 34 26.4 28.1 25.9 26.7 26.8 35 27.9 30.4 30.3 32.9 30.4 36 24.5 27.1 26.1 26.0 25.9 37 22.6 23.8 24.0 24.4 23.7 38 25.9 26.2 27.2 28.6 27.0 39 23.5 23.6 24.6 24.1 24.0 40 22.7 24.8 24.7 25.3 24.4 41 24.4 28.3 27.0 26.7 26.6 42 26.6 27.4 28.8 27.7 27.6 43 25.7 27.8 26.7 27.5 26.9 44 (control) 17.7 19.9 20.7 25.9 21.1 45 (transit control) 4.8 5.5 5.9 6.3 5.6 46 25.1 28.2 23.9 24.7 25.5 47 22.6 25.8 24.7 23.9 24.3 48 21.3 24.9 25.4 24.8 24.1 49 20.4 23.3 22.9 23.7 22.6 50 16.7 20.4 18.6 21.2 19.2 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 57

FIGURE 9.1 NETWORK ENVIRONMENTAL TLD EXPOSURE RATES 30.0 28.0 26.0 I..

24.0 22.0 20.0 18.0

%n~

%c r-00 0S 0

m w

a-0 m>

cT 0%

0 o

r-wc 0%

0D C

op cc cc cc cc T~

0?

0%,

91 1?

1?

91 1?0 0

0 0

0

• The 10-year mean value is for the date range 2003-2012.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 58

FIGURE 9.2 ENVIRONMENTAL TLD COMPARISON - PRE-OPERATIONAL VS 2012 35 -T Control TLD 0

90, 30 25 20 15 10 5

0 1

3 5

7 9

11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 42 45 TLD Number 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 - 2012 59

10.

Land Use Census 10.1.

Introduction In accordance with the PVNGS ODCM, Section 6.2, the annual Land Use Census was performed in April 2012.

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 zero (0) changes in nearest resident status from the previous year. Dose calculations indicated the highest dose to be 0.186 mrem.

Milk Animal There was one (1) change in milk animal status from the previous year. Dose calculations indicated the highest dose to be 0.388 mrem.

Vegetable Gardens There was one (1) change in nearest garden status from the previous year. Dose calculations indicated the highest dose to be 0.779 mrem.

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

Figures 10.1 through 10.3 provide graphs depicting historical calculated doses for nearest residents, nearest milk receptor, and nearest garden receptor locations in each sector.

Differences in calculated doses are the result of many variables, including;

" Changes in receptor locations from year to year (proximity to the power plant)

" Changes in local meteorology (wind direction, wind speed, precipitation, temperature)

" Concurrent meteorology at the time of effluent releases

" Exposure pathways PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 60

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

NEAREST NEAREST RESIDENT GARDEN MILK ANIMAL CHANGE FROM CALCULATED DOSE (COW/GOAT)

(mrem) 2011 N

1.55 3.10 3.66 Resi Gard Milk NNE 1.52 3.30 3.05

[Resic Gard I _

Milk NE I

2.16 NONE I

NONE IResi dent en 3.84E-02 1.89E-01 1.47E-01 Garden lent 7.37E-02 f en 3.72E-01 3.88E-01 lent 1.07E-01 ENE 2.16 2.63 4.84

[ Resident 1.00E-01 Garden 7.79E-01 Milk 2.70E-01 E

2.81 j

NONE NONE rpResident 8.OOE-02 [

ESE 1.89 NONE

[

NONE r Resident 1.86E-01 SE

[

3.36 1 NONE NONE flResident 1.15E-01 SSE NONE fNONE NONE I NA S

NONE _I NONE__

NONE jNA ISSW_[

NONE _[NONE NONE INA I

SW

[

1.39

[ NONE

[

NONE Resident 1.40E-01 WSW 1 0.75 4.82 NONE Resident 7.62E-02 Garden SIGarden 1.63E-01 W

[

0.70

[ NONE

[

-NONE Resident 4.80E-02 WNW

[_NONE

[NONE NONE NA I

NW

[

0.93

[ NONE NONE Resident 4.1OE-02 NNW

[

1.30

[ NONE

[

NONE Resident 3.01E-02 COMMENTS:

Dose calculations were performed using the GASPAR code and 2012 meteorological data and source term. Dose reported for each location is the total for all three PVNGS Units and is the highest individual organ dose identified.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 61

FIGURE 10.1 HISTORICAL COMPARISON OF NEAREST RESIDENT DOSE 4.00E-01 3.50E-01 3.00E-01 0 2012 2.50E-01 0 2011 M

02010

-2 2.00E-01 N 2009 I

02008 E 1.50E-01 E2007 1.OOE-01 0 2006

• 2005 5.00E-02 0 2004 O.OOE+00 02003 Sector Historical annual average most prevalent wind direction is from the SW, next highest is from the N.

This is one reason for the higher doses assigned to residents in the S sector.

Historical annual average least prevalent wind direction is from the SE, next highest is from the ESE.

This is one reason for the lower doses assigned to residents in the WNW, NW, and NNW sectors.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 62

FIGURE 10.2 HISTORICAL COMPARISON OF NEAREST MILK ANIMAL DOSE 1.20E+00 1.00E-O0 E

2.OOE-01 0.OOE+00 1.OOE+OO 4

-~

U 2012 8.OOE-01

.2010 0 2012 0 2011

• 2010

• 2009

• 2008 t

-I-

-~

3-6.00E-01

• 2008 N 2007 02006 no milk animals identified in these sectors* 2 0 0 5 M2004 E 2003

+

liiý Sector Milk animals include goats and/or cows. Several new milk animals were identified in 2009 that were closer to the power plant than in the past, resulting in generally higher calculated doses in that calendar year.

In 2004 the combination of meteorology, milk animal proximity to the plant, and gaseous effluent releases resulted in higher calculated doses in the NNE and NE sectors.

No milk samples have indicated any plant related radionuclides. Additionally, milk animals in the desert environment are normally fed stored feed and are not on pasture. The calculated doses are conservative since they include pastured feed as part of the calculation.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 63

FIGURE 10.3 HISTORICAL COMPARISON OF NEAREST GARDEN DOSE 9.OOE-01 8.OOE-01 0 2012 7.OOE-01 E 2011 6.00E-01 E 2010 0 2009 5.00E-01 02008 4.OOE-0 02008

• 4.OOE-01 N 2007 E.*

2006 1.00E-01 02003 0.SeE+00 Gardens are sporadically identified from year to year. Gardening is not prevalent in the desert environment.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 64

11.

Summary and Conclusions The conclusions are based on a review of the radio assay results and environmental gamma radiation measurements for the 2012 calendar year. Where possible, the data were compared to pre-operational sample data.

All sample results for 2012 are presented in Tables 8.1-8.13 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 identified 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.

There was no measurable radiological impact on the environment in 2012 resulting from the operation of PVNGS.

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 65

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 2012 Medium or Lower Limit of All Indicator Location with Highest Annual Mean Control Locations Pathway Sampled Type and Total Detection (LLD)

Locations Number of (Unit of Number of (from Table 6.1)

Name Mean (f)a Mean (f)a Nonroutine Measurement)

Analyses Mean (f)0 Distance and Range Range Reported Performed Range Direction Measurements Direct Radiation TLD - 199 NA 24.7 (188/188)

Site #35 30.4 (4/4) 23.7 (8/8) 0 (mrem/std. qtr.)

16.7-32.9 8 miles 3300 27.9-32.9 17.7-27.7 Air Particulates Gross Beta - 529 0.010 0.040 (476/476)

Site #6A 0.039 (53/53) 0.039 (53/53) 0 (pCi/m3) 0.019 - 0.069 13 miles 1580 0.021 - 0.069 0.021 - 0.069 Gamma Spec Composite - 40 Cs-134 0.05

<LLD NA

<LLD

<LLD 0

Cs-137 0.06

<LLD NA

<LLD

<LLD 0

Air Radioiodine Gamma Spec. - 530 (pCi/m3) 1-131 0.07

<LLD NA

<LLD NA 0

Broadleaf Gamma Spec. - 9 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

Nb-95 15

<LLD NA

<LLD NA 0

1-131 15

<LLD NA

<LLD NA 0

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 66

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 2012 Medium or Lower Limit of All Indicator Location with Highest Annual Mean Control Locations Pathway Sampled Type and Total Detection (LLD)

Locations Number of (Unit of Number of (from Table 6.1)

Name Mean (f)a Mean (f)'

Nonroutine Measurement)

Analyses Mean (f)a Distance and Range Range Reported Performed Range Direction Measurements 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

Gross Beta - 48 4.0 3.8 (28/48)

Site #48 4.7 (5/12)

NA 0

2.1 -7.6 1 mile 236' 3.6-5.9 H 16 2000

<LLD NA

<LLD NA 0

Gamma Spec. - 46 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

Gamma Spec. - 22 Milk 1-131 1.0

<LLD NA

<LLD

<LLD 0

(pCi/liter)

Cs-134 15

<LLD NA

<LLD

<LLD 0

Cs-137 18

<LLD NA

<LLD

<LLD 0

Ba-140 60

<LLD NA

<LLD

<LLD 0

PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2012 67

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 2012 Medium or Lower Limit of All Indicator Location with Highest Annual Mean Control Locations Pathway Sampled Type and Total Detection (LLD)

Locations Number of (Unit of Number of (from Table 6.1)

Name Mean (f)a Mean (f)a Nonroutine Measurement)

Analyses Mean (f)a Distance and Range Range Reported Performed Range Direction Measurements La-140 15

<LLD NA

<LLD

<LLD 0

Gamma Spec. - 20 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 31(5/24)

Site #61 35 (2/4)

NA 0

(pCi/liter) 16 - 50 Onsite 67' 21 - 50 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

H 20 3000 940 (16/24)

Site #63 1054 (8/8)

NA 0

562-1350 Onsite 1800 966-1350 (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 2012 68

12.

References

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

2. 1985-2011 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 - 2012 69