ML17303B089

Operational Radiological Environ Monitoring Program Rept for 1987.

ML17303B089
Person / Time
Site:	Palo Verde
Issue date:	04/25/1988
From:	Bates B, Mueller J CONTROLS FOR ENVIRONMENTAL POLLUTION, INC.
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@CD ARIZONA NUCLEAR POWER PRO3ECT PALO VERDE NUCLEAR GENERATING STATION OPERATIONAL RADIOLOGICALENVIRONMENTALMONITORING PROGRAM REPORT FOR 1987 SUBMITTED BY CONTROLS FOR ENVIRONMENTALPOLLUTION, INC.

1925 ROSINA STREET SANTA FE, NEW MEXICO 87502 COPY NO. O5 Prepared By:

Bob Bates, Contract Manager Approved By:

ames J. Mueller, President goal

CONTENTS Number Title ~Pa e Abstract 1.0 Introduction 2.0 Description of the Monitoring Program 3.0 Analytical Procedures rN 0.0 Sample Preparation Methods 5.0 Nuclear Instrumentation 19 6.0 Isotopic Detection Limits and Activity Determinations 22 7.0 Quality Control Program 25 8.0 Data Interpretation and Conclusions 32 9.0 Miscellaneous Information 10.0 References 103 Appendix A EPA Cross-check Results (1986 Ammended}

Appendix B EPA Crass-check Results (1987} 155 Appendix C ASU Cross-check Results 166 Appendix D 1987 Land Use Census 176

i TABLES Number Title ~Pa e Collection Locations Collection Schedule Aliquot Scanned for Detection Limit Calculation and Actual Analysis (CEP) 28 IV Sample Counting Times (CEP) 29 V Detection Limits by other than Gamma Spectrometry (CEP) 30 VI Detection Limits by Gamma Spectrometry (CEP) 3I VII Gross Beta in Air Particulate Data (First Quarter) 36 Vill Gross Beta in Air Particulate Data (Second Quarter) 38 IX Gross Beta in Air Particulate Data (Third Quarter) 00 X Gross Beta in Air Particulate Data (Fourth Quarter) 02 XI Gross Beta in Air Particulate Data (Station Summary)

XII Gross Alpha in Air Particulate Data (First Quarter) 05 XIII, Gross Alpha in Air Particulate Data (Second Quarter) 07 xrv Gross Alpha in Air Particulate Data (Third Quarter)

XV Gross Alpha in Air Particulate Data (Fourth Qu arter) 5l XVI Airborne Radioiodine Data (First Quarter) 67 XVII Airborne Radioiodine Data (Second Quarter) 69 XVIII Airborne Radioiodine Data (Third Quarter) 71 XIX Airborne Radioiodine Data (Fourth Quarter) 73 XX Quarterly Thermoluminescent Dosimetry (First Quarter) 76 XXI Quarterly Thermoluminescent Dosimetry (Secon d Quarter) 78 XXII Quarterly Thermoluminescent Dosimetry (Third Quarter) 80 XXIII Quarterly Thermoluminescent Dosimetry (Fourt h Quarter) 82 XXIV Human Vegetation 90 XXV Human Vegetation (Leafy), Gamma Spectrometr y 92 XXVI Human Vegetation (Citrus Fruits), Gamma Spect rometry 93 XXVII Animal Vegetation 95 X XVIII Animal Vegetation, Gamma Spectrometry 98 XXIX Drinking IVater I02

0 TABLES (Cont.)

Number Title ~Pa e XXX Drinking Water, Gamma Spectrometry 105 XXXI Groundwater 109 XXXII Groundwater, Gamma Spectrometry 110 XXXIII Surface Water, PVNGS Reservoir 113 XXXIV Surface Water, PVNGS Evaporation Pond 116 XXXV Surface Water (Composite - CEP),

PVNGS Evaporation Pond and Reservoir 119 XXXVI Surface Water, Gamma Spectrometry PVNGS Evaporation Pond and Reservoir 120 XXXVII Milk (Fresh) 125 XXXVIII Milk (Fresh), Gamma Spectrometry 131 XXXIX Environmental Radiological Monitoring Program Annual Summary - 1987 133

I FIGURES Number Title ~Pa e Area Collection Locations - Map 6 Site Collection Locations - Map 7 Gross Beta in Air Particulate (Station IA) 53 Gross Beta in Air Particulate (Station OA) 50 Cross Beta in Air Particulate (Station 6A) 55 Gross Beta in Air Particulate (Station 7A) 56 7 Cross Beta in Air Particulate (Station IOA)- 57 8 Cross Beta in Air Particulate (Station 15A) 58 9 Gross Beta in Air Particulate (Station 17A) 59 10 Gross Beta in'Air Particulate (Station 2IA) 60 11 Gross Beta in Air Particulate (Station 29A) 61 12 Gross Beta in Air Particulate (Station 35A) 62 13 Cross Beta in Air Particulate (Station 00A) 63 10 Gross Beta in Air Particulate (Station 00A) 60 Gross Beta in Air Particulate (Mean Weekly Activity) 65 16 Quarterly Thermoluminescent Dosimetry (First Quarter) 80 17 Quarterly Thermoluminescent Dosimetry (Second Quarter) 85 18 Quarterly Thermoluminescent Dosimetry (Third Quarter) 86 19 Quarterly Thermoluminescent Dosimetry (Fourth Quarter) 87 20 Mean Quarterly Thermoluminescent Dosimetry 88

Abstract This operational environmental radiological monitoring program is an ongoing study conducted by Controls for Environmental Pollution, Inc. (CEP) and Arizona State University (ASU) for Arizona Nuclear Power Project (ANPP), Palo Verde Nuclear Generating Station (PVNGS). The data presented in this report were obtained from samples collected by APS

)

and ASU personnel and analyzed'by CEP and ASV during 1987.

In order to determine radiation levels in the environment around the PVNGS, the following types of samples were collected: animal vegetation, human vegetation (including fruits and vegetables), fresh milk, groundwater, drinking water, surface water, airborne particulate and radioiodine. TLD's are utilized for determining environmental direct radiation levels.

Analytical results are presented and discussed along with other pertinent information.

Possible trends and anomalous results, as interpreted by CEP are also discussed.

On 3uly 1, 1987, Arizona State University assumed responsibility for all environmental analyses with the exception of airborne particulate and radioiodine samples. Results P

presented are a compilation of CEP and ASU data for the year. CEP data will be indicated by the letter (a) and ASU data will be indicated by the letter (b) throughout this report.

ARIZONA NUCLEAR POWER PROJECT PALO VERDE NUCLEAR GENERATING STATION OPERATIONAL RADIOLOGICALMONITORING PROGRAM 0

1.0 Introduction (CEP)

This report presents results of the operational environmental radiological monitoring program conducted during 1987 by Controls for Environmental Pollution, Inc. (CEP) and Arizona State University (ASU) for Arizona Nuclear Power Project (ANPP), Palo Verde Nuclear Generating Station (PVNGS).

In compliance with federal requirements to provide a complete environmental monitoring program for nuclear reactors, and in its concern for maintaining the quality of the local environment, ANPP began its pre-operational environmental monitoring program in 1979. The program complies with the requirements of the U.S. Nuclear Regulatory Commission in their Reactor Assessment Branch Technical Positi Revision 1, November, 1979. On May 25, 1985 PVNGS Unit One became operational.

The objectives of the operational radiological environmental monitoring program are as follows: 1) to determine radiation levels in the environs during reactor operations;

2) to monitor potential critical pathways of radioeffluent to man; 3) to determine radiological impact on the environment caused by the operation of PVNGS.

A number of techniques are used to distinguish power plant effects from other sources during the operational phase, including application of established background levels.

Operational radiation levels measured in the vicinity of ANPP are compared with the pre-operational measurements 'at each of the sampling locations. Results of the monitoring program help to evaluate sources of elevated levels of radiation in tl environment, e.g., atmospheric nuclear detonation or abnormal plant releases.-

1.1 0 rational Radiolo ical Monitorin Pro ram Chan es (1987)

, 1.1.1 July 1, 1987 - ASU assumes responsibility for analysis of REMP samples with the exception that CEP continues analysis of airborne particulate and radioiodine.

1.2 0 rational Radiolo ical Monitorin Pro ram Chan es 1986 1.2.1 April 20, 1986 - Weekly samplings of PVNGS Reservoir and Pond now include collection of a sample in a glass container for Tritium analysis.

1.2.2 July 17, 1986 - Wedgeworth house drinking water sample site changed name to Glover.

1.2.3 October 16, 1986 - Gavette Drinking Water sample added to REMP, replacing Desert Farms.

1.3 Introduction (ASU)

In the spring of 1983, the Arizona State University (ASU) Radiation Measurements Facility (RMF) implemented a long-term independent radiological environmental assesment program for the Palo Verde Nuclear Generating Station (PVNGS).

In July, 1987 the RMF was certified as a vendor by the PVNGS Quality Assurance Department and assumed responsibility for many of the environmental assessments performed in support of the nuclear power station. The data presented in this report were obtained from samples collected by, PVNGS.or RMF personnel during the calendar year 1987 and analyzed by RMF personnel in RMF complex.

The assessment program consists of routine measurements of background gamma radiation and of radionuclide concentrations in media such as air, ground water, drinking water, surface water, fresh milk and soil.

Monthly milk samples were collected from six sites until September 1987 when one dairy ceased operation. Five samples were collected thereafter.

samples are assayed for iodine and gamma isotopic.

Weekly water samples are collected routinely from three sites. Monthly samples are collected from three residence wells and quarterly samples are obtained from two on-site wells. Samples are assayed for iodine-131, strontium-89, strontium-90, gross alpha, gross beta, tritium and/or gamma isotopic.

Four RMF staff members are trained and certified by PVNGS to perform routine sampling of air, surface and ground water, and milk. Three staff members are certified by PVNGS for collection of thermoluminescent dosimeters.

2.0 Descri tionof the Monitorin Pro ram 0

ANPP has contracted with CEP and ASU to determine the ambient radiation levels in the environment around PVNGS during its operation.

The types. of environmental samples collected include: animal vegetation, human vegetation (produce and citrus fruits), groundwater, drinking water, surface .water, fresh milk, airborne particulates, and radioiodine. The TLD network is managed by ANPP personnel. TLD evaluations are conducted by the PVNGS Dosimetry Group.

The locations of the monitoring sites are shown in Figure I. The monitoring sites and the respective sample types collec'ted are described in Table I. Table II describes the sample collection frequency. Information concerning new sample types, locations, and collection frequency are included in these tables where applicable.

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I Radiological Environmental Monitoring Program Sample Sites

TABLE I COLLECTION LOCATIONS Sample Sitet Sam leT e Location (a) Location Descri tion lA Air E30 APS Goodyear Office OA Air E20 APS Buckeye Office 6A Air (Control) SSE35 APS Gila Bend Substation 7A Air SE8 Arlington School ISA Air NNE2 Buckeye-Salome Rd. 8c 371st Ave.

15A Air NE2 NE Site Boundary 17A Air EO 351st Ave., 1 mi. S of B-S Rd.

21A Air S3 S Site Boundary 35A Air NNW9 Tonopah, Palo Verde Inn Fire Station 00A Air N3 Trailer Park at Wintersburg 00A Air ENE35 APS El Mirage Office (Sun City) 06 Water, Veg. NNW9 McArthur's Farm, Tonopah 07 Vegetation ENE3 Adam's Residence, 355th Avenue Bc Buckeye - Salome Road Water SW5 Gavette residence, 39326 W. Elliot Rd.

Water ESEO Glover Residence, 351st A ve Dobbins Rd.

50 Milk NE7 Cordell Baisley Dairy, 331st A . 8c Van Buren 51 Milk, Veg. El 1 Butler Dairy, Palo Verde Rd.

Southern 52 Vegetation E15 Cambron Farm, Miller Rd. 8c Broadway 53 Milk E26 Kerr Dairy, Dean R Buckeye Rds.

50 Milk E27 Skousen

• Dairy, Airport Dobbins Rds.

55 Milk E28 Al Lueck Dairy 3r., 3ackrabbit 8c Hazen Rds.

Milk (Control) E75 Hamstra Dairy 1/2, McQueen

• Ryan Rds.

57 Water Onsite Well 27ddc 58 Water Onsite Well 30abb 59 Surface Water Onsite PVNGS Evaporation Pond 60 Surface Water Onsite PVNGS Reservoir 61 Vegetation (Control) E80 Ray Rd. and Higley Rd., Higley Arizona, 62 Vegetation (Control) E60 J.A. Wood Co., North Alma Schoo d.,

Scottsdale, Arizona (a) Based on Table 3-1, NUREG-0650; distances are from centerline of Unit 2 containment in miles.

TABLE II 19$ 7 COLLECTION SCHEDULE Air Airborne Domestic Fresh Drinking Surface Collection Site Particulates Radioiodine Meats Milk ~Ve etation Groundwater Water Water

//IA, APS Goodyear Office

//0A, APS Buckeye Office

//6A, APS Gila Bend Substation

//7A, Arlington School

//I 4A, Buckeye-Salome Rd.

ik 37lst Ave.

/i I5A, NE Site Boundary 8I7A, 351st. Ave., I mi.

S of B-S Rd.

82IA, S Site Boundary

//29A, W Site Boundary

//35A, Tonopah, Palo Verde Inn Fire Station

//00A, Trailer Park at Wintersburg

//00A, APS El Mirage Office

~ //46, McArthur's Farm AA 807, Adam's Residence AA 808, Gavette residence 809, Glover residence

//50, Cordell Baisley Dairy sM

//5l, Butler Dairy AA

//52, Cambron Farm

//53, Kerr Dairy u >0, SI ousen Dairy P)5, Al Lueck, 3r. Dairy

TABLE ll (Cont.)

1987 COLl.ECTlON SCHEDULE Air Airborne Domestic Fresh Drinking Surface Collection Site Particulates Radioiodine Meats Milk ~Ve etation Croondwater Water Water 856, Hamstra 82 Dairy ll57, Well 27ddc ll53, Well 30abb 859, PVNGS Evaporation Pond ll60, P VNGS Reservoir 861, Cooley Farm AA 862, 3.A. Wood Co. AA W = Weekly M = Monthly AA = As available during growing season Q = Quarterly

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3.0

~ Anal tical Procedures (CEP)

The analytical procedures discussed in this report are those routinely used by CEP to analyze samples.

3.1 Fresh Milk 3.1.1 Iodine-131 Two liters of milk containing standardized Iodine carrier are stirred with Amberlite IRA-000 anion exchange resin for one hour. The Iodine is stripped from the resin with sodium perchlorate (NaC IO<) and precipitated with silver nitrate (AgNO3). The precipitate is filtered on a tared glass fiber filter. The dried precipitate is weighed for percent recovery and counted for Iodine-131 in a thin window, gas flow, proportional counter (Beckman Low Beta II or Berthold LB770). These instruments have a forty-one percent efficiency and a forty-five percent, respectively using Iodine-131 precipitated as silver iodide (AgI).

3.1.2 Strontium-89 The Strontium is precipitated with concentrated fuming nitric acid, redissolved in water, made basic with dilute ammonium hydroxide and precipitated as the oxalate. The dried oxalate precipitate is counted in a low background proportional counter (Beckman Low Beta II or Berthold LB770) having sixty percent and forty-five percent Strontium-Yttrium-90 efficiencies, respectively. The Strontium-89 activity is determined by subtracting the previously measured Strontium-90 activity and its corresponding Yttrium-90 ingrowth from the measured gross Strontium activity.

3.1.3 Strontium-90 An aliquot of milk containing standardized Strontium and Yttrium carriers, is stirred with Dowex 50WX8 cation exchange resin at a pH of six for thirty minutes. All nuclides are stripped from the resin wit strong acid. After the ingrowth period has been established, tl Yttrium-90 is extracted with five percent di-2-ethylhexyl phosphoric acid (D2EHPA) in toluene, back extracted into an aqueous phase, precipitated as the oxalate and counted in a low background internal gas flow proportional counter (Beckman Low Beta II or Berthold LB770) to determine the Strontium-90 content of the sample. These systems have Strontium-Yttrium-90 efficiency of sixty percent and forty-five percent, respectively.

3.1.0 Gamma S ctrometr A suitable aliquot of sample is placed in a Marinelli beaker and counted with a multi-channel analyzer equipped with an intrinsic Cermanium detector which is coupled to a 0096 channel, computer based, multi-,

channel analyzer (Northern Scientific TN0500). The resulting spectru is analyzed by the computer, and specific nuclides, if present, identified and quantified.

3.2, ~Ve etation 3.2.1 Gamma S ectrometr Refer to Milk Subsection 3.18.

3.2.2 Iodine-131 Required on leafy vegetation only. After appropriate preparation of the sample, analysis is performed as discussed in Subsection 3.1.0.

3.3 Groundwater and Drinkin Water 3.3.1 Gross Al ha and Beta A 1.0 liter aliquot of water is evaporated to dryness and transferred to a weighed planchet. The Gross Alpha and Cross Beta radioactivity i measured by counting the planchet in an internal gas flow, simultaneous proportional, low background counter (Beckman Wide Beta II or Berthold LB770), or by counting the planchet in a low background simultaneous counter (Tennelec LB5100).

3.3.2 Gamma S ctrometr Refer to Milk Subsection 3.1.0.

3.3.3 Strontium-90 A 1.0 liter aliquot of the sample containing standardized stable Strontium carrier is evaporated to dryness and wet ashed with concentrated nitric acid (HNO3) and hydrogen peroxide (H202). The Yttrium-90 is extracted with five percent Di-2-ethylhexyl phosphoric acid (D2EHPA) in toluene after the ingrowth period has been established, back extracted into an aqueous phase, precipitated as the oxalate and counted with an integral gas flow proportional counter (Beckman Low Beta II or Berthold LB770) having a Strontium, Yttrium-90 efficiencies of sixty percent and forty-five percent, respectively. The counting results are back calculated to give Strontium-90 activity.

3.3A Tritium Three milliliters of the water sample are mixed with Packard Opti-flour cocktail. The mixture used is nineteen percent sample in a non-organic cocktail. This gives a Tritium counting efficiency of approximately thirty percent. The counting system used is a Beckman LS-5801 Liquid Scintillation Counter.

3.0 Surface Water 3A.I Iodine-131 One liter of water containing standardized Iodine carrier is acidified with nitric acid (HNO3), then extracted with carbon tetrachloride (CClq) and sodium nitrite (NaNO2) to remove the Iodine. The Iodine is back extracted from the carbon tetrachloride (CClq) using a 0.2% hydrazin solution which supplies more purification and an aqueous media f precipitation. Iodine is precipitated with silver nitrate (AgNO3) and filtered on a tared glass fiber filter as silver iodide (Agl). The dried precipitate is weighed for recovery and counted for Iodine-131 in a thin window, gas flow, proportional counter (Beckman Low Beta II or Berthold LB770) having forty-one percent and forty-five percent efficienies, respectively for Iodine-131 precipitated as silver iodide (Agl).

3A.2 Gross Al ha and Beta An aliquot of the monthly composite is taken and analyzed according to Ground and Drinking IVater Subsection 3.3.

3.0.3 Gamma S ctrometr An aliquot of the monthly Milk Subsection 3.1.0.

3.0.0 Strontium-89 An aliquot of the monthly composite is taken and analyzed according to Milk Subsection 3.1.2.

3.0.5 Strontium-90 An aliquot of the monthly composite is taken and analyzed according to Groundwater and Drinking 'iVater Subsection 3.3.3.

3.0.6 Tritium An aliquot is taken and analyzed according to Ground and Drinking 5Vater Subsection 3.3A.

3.5 Air Particulate 3.5.1 Gross Al ha and Beta The Sartorius filter (cellulose nitrate filter with a 3 micron pore size), i placed in a 50 mm stainless steel planchet and counted for Gross Alpha and Gross Beta radioactivity using a low background internal gas flow, simultaneous proportional counter (Beckman Wide Beta II), or by using a low background. simultaneous counter (Tennelec LB5100).

3.5.2 Gamma S ctrometr The air filters are sealed in small, plastic Marinelli beakers and counted utilizing the method described in Milk Subsection 3.1.0.

3.6 Airborne Radioiodine Two analytical methods for airborne radioiodine are used by CEP depending upon the length of time between the sample collection date and the date of sample receipt at CEP. The sensitivity of the Gamma Spectrometry Method decreases significantly after an Iodine-131 decay of greater than one half-life (8.00 days).

Therefore, if more than one week has elapsed between sample collection and analysis of the sample the Alkaline Leach Method provides a greater sensitivity and is thus the analytical method of choice.

3.6.1 Alkaline Leach Method Radioiodine is removed frorrl activated charcoal along with a standardized iodine carrier using concentrated ammonium hydroxide (NHqOH) and hydrogen peroxide (H202). The charcoal is filtered and the remaining solution is acidified with nitric acid (HNO3) and extracted with carbon tetrachloride (CClq). A 0.2% hydrazine solution supplies further purification and an aqueous media for precipitation. Iodine is precipitated with silver nitrate and filtered on a tared glass fiber filter as silver iodide (AgI). The dried precipitate is weighed for recovery and counted for Iodine-131 in a thin window, gas flow, proportional counter (Beckman Low Beta II or Berthold LB770) having forty-one percent and forty-five percent efficiencies, respectively for Iodine-131 precipitated as silver iodide (Agl).

3.6e2 Gamma S ectrometr Method The direct gamma counting method for Iodine-131 consists of placing charcoal canister directly on an intrinsic germanium detector and analyzing the resulting spectrum for Iodine-131 using the computer based Nuclear Data Model ND9900 System. The system is calibrated using charcoal filters which have been uniformly loaded (in the first 5 mm) with standardized isotopes traceable to NBS and calibration verification is performed by analyzing a charcoal filter which has been uniformly loaded (in the first 5 mm) with standardized Iodine-131 traceable to NBS.

Deposition of activity in the first 5 mm of the filters is done to simulate actual sample loading and both standards and samples are placed on the detector so that the load gradient is decreasing with distance from the detector.

3.7 Anal tical Procedures (ASU) 3.7.1 Gamma S ectrosco 0 All gamma detectors are energy calibrated weekly. Efficiency calibrations are done annually using triplicate aliquots of mixed gamma emitting solution whose activity is explicitly traceable to the National Bureau of Standards (NBS).

Water Two liters of samples is evaporated to 500 ml and counted in a Marinelli beaker.

Milk Milk cannot be concentrated conveniently and is counted, as received, in a Marinelli beaker.

Urine Urine is diluted to either 60 ml or 500 ml, depending on the amount o sample available, and is counted in the appropriate geometry.

Soil Animal Feeds "Five hundred milliliters" of these samples are counted in Marinelli beakers. The Marinelli beaker geometry is volume, but the sample size is grams or kilograms. Therefore sufficient material is uniformly packed into a volume of 500 ml to give and apparent density of 1.0 to 1.1.

3.7e2 Iodine-131 Milkand Water Iodine is sorbed onto Dowex 1-X8 resin, stripped with hypochlorite, extracted into chloroform, stripped, precipitated as Pdl2, and counted in a low background gas-flow proportional counter.

Charcoal Charcoal cartridges are counted an a Ce(Li) detector whose efficiency is determined by a standard cartridge spiked with NBS traceable mixed gamma emitter. The activity is loaded onto the first 10% of the charcoal, and the cartridge is turned over halfway. through the count.

3.7.3 Strontium-89 and 90 Milk Radiostrontium and added carrier are sorbed onto Dowex 50W-X8 and stripped with nitric acid. Calcium is separated by repeated extractions with fuming nitric acid. The Yttrium-90 daughter is separated and counted to determine Strontium-90. Strontium-89 is determined by counting Strontium-89 and Strontium-90 before Yttrium-90 ingrowth and sub tracting S trontium-90.

Water Radiostrontium and added carrier are precipitated from the sample as the carbonate. The remainder of the procedure follows that for milk, beginning with nitric acid separations.

IVater samples are distilled from alkaline permanganate and counted in a liquid scintillation counter.

Urine Urine is not distilled. A 3 ml aliquot is added to the scintillant and counted in the liquid scintillation counter. Quench correction factors are made automatically by the instrument so that the correct counting efficiency is determined. A new method, developed by the RMF for determining the ef fects of quenching on the background, will be implemented in 3anuary 1988. Since the background changes the quench, this technique permits the "true" background to be calculated.

0.0 Sam le Pre aration Methods The following sample preparation methods are routinely used by CEP.

0.1 Ve etation Sam le Pre aration

1. The plastic bags are opened and the sample weighed immediately to obtain the wet weight.

3. After weighing, the sample is transferred to a drying pan and placed in an oven at 110 C.

0. The dry sample is ground to a fine powder and homogenized.

5. The sample is then dissolved or ashed, whichever is required for further isotopic analysis.

0.2 Milk Iodine carrier (Potassium Iodide), formalin and sodium bisulfate are added when the milk is collected to stabilize the Iodine-131 during shipment of samples t CEP. The procedure for Fresh Milk is then followed as described in Section 3.l, of this report.

5.0 Nuclear Instrumentation (CEP) 5.1 Nuclear Data Genie Model ND9900 Gamma S ectrometer The Nuclear Data Gamma Spectrometer Model ND9900 is a fully integrated multiple user, data acquisition, display and processing system equipped with a DEC Micro VAX II computer, along with an auxiliary power battery pack to ensure no loss of data. This system has complete spectral display manipulation, including ROI selection and applications interface. Other features include linear and logarithmic, spectral data display, display of two spectra for comparison, intensified regions of interest and display of experiment status parameters. This system is expandable to 32 ADC's with a live time resolution of 0.01 sec.

5.2 Beckman Wide Beta II Low Back round Gas Pro rtional S stem The Beckman Wide Beta II Two-inch Detector Counting System has an average of 2.5 cpm Beta background and O.l cpm Alpha background. The system can also be set up for one-inch detector. The system capacity is one hundred samples. The detector has an efficiency, of 60% for Strontium-90 and 00% for Plutonium-239.

5.3 Beckman Wide Beta II Low Back round Gas Pro rtional S stem (Simultaneous)

The Beckman Wide Beta II Two-inch Planchet Counting System has an average of 2.5 cpm Beta background and 0.1 cpm Alpha background. The detector has a 60% efficiency for Strontium-90 and 00% for Plutonium-239. This system has been designed for simultaneous Alpha and Beta counting. The system sample capacity is one hundred samples.

5A Beckman Low Beta II Low Back round Beta S stem The Beckman Low Beta II Gas Proportional One-inch Detector Counting System has an average of 1.5 cpm Beta background and O.l cpm Alpha background and detector efficiency of 60% for Strontium-90 and 00% for Plutonium-239. The system capacity is one hundred samples. The system can also be set up for two-inch detector having-2.5 cpm Beta background and O.l cpm Alpha background.

5.5 Beckman Low Beta II Low Back round Beta S stem The Beckman Low Beta II Gas Proportional Two-inch Detector Counting Syste has an average of 3.0 cpm Beta background and 0.2 cpm Alpha background and detector efficiency of 60Fo for Strontium-90 and 00% for Plutonium-239. The system capacity is one hundred samples. This system can also be set up for one-inch detector having 1.5 cpm Beta background and O.l cpm Alpha background.

5.6 Beckman Li uid Scintillation Countin S stems Beckman LS-5801 Liquid Scintillation Counter will be used for all Tritium determinations, as well as C-IO, P-32, S-35 and other Beta emitters. The system has a tritium counting efficiency of sixty percent on an unquenched sample.

5.7 Low Back round Al ha Gas Flow S stems The Gross Alpha Counting Systems consist of two windowless gas flow detectors manufactured by Nuclear Measurements Corporation with an Alpha efficiency of 5.8 55% with a background of less than 0.1 cpm.

Low Back round Scintillation Counter e

The Low Background Scintillation Counter consists of a Zinc Sulfide screen. The system has an average Alpha of 0.1 cpm.

5.9 Tennelec LB5100 S stem The Tennelec LB5100 System has a Two-inch Planchet Counting System and has an average of 2 cpm Beta background and 0.1 cpm Alpha background. This system has been designed for simultaneous Alpha and Beta counting. The sample capacity is fiftysamples.

5.10 Low Level Planchet Countin S stems (2)

Each Berthold 10-Channel Low Level Planchet Counting System (Model LB700) is capable of simultaneously counting 10 planchets for Gross Alpha and Gross Beta activities alternately with Proportional Gas Flow Detectors. The systems hav an average background count rate of less than 1 count per minute. The instruments have an Alpha efficiency of 33% for Plutonium-239 and Beta efficiences of 05% for Strontium, Yttrium-90 and 03% for Cesium-137.

5.11 Detectors and E ui ment (ASU)

Gamma spectra are analyzed by a Canberra Series 95 Multichannel Analyzer (MCA) using a microVax computer. Four detectors are available:

1. PGT Ge(Li), 26% efficiency, 1.90 keV FWHM Q 1332.5 keV

2. Canberra Ge(Li), 10% efficiency, 2.08 keV FWHM

3. ORTEC HPGe, 13% efficiency, 1.98 keV FWHM

0. Canberra HPGe, 28% efficiency, 3.96 keV FWHM t

Two Tennelec LB-5100 low background proportional counters are used for alpha and beta counting. One of the systems has been interfaced to a personal computer and is completely automatic. Sample results and background counts are stored on disk. In addition, the computer is able to automatically produce control charts for background or check source counts and averages background data. Plateaus are automatically determined also. The second Tennelec system will be interfaced to a personal computer as soon as the computer and RMF designed electronics are available.

Alpha spectroscopy is available from either of two solid state silicon surface barrier detectors which are-interfaced to the Series 95 MCA.

Liquid scintillation counting is done on one of two Beckman LS-1801 Liquid scintillation spectrometers. The RMF has improved the automatic quench compensation feature through a modification which adds a quench correction for background.

6.0 Isoto ic Detection Limits and Activit Determinations (CEP)

Analytical detection limits are governed by a number of factors including:

The sample size taken is based on the numerical data one wishes to obtain which can describe a particular situation and can be interpreted as a basis for possible action. The sample size has to be representative and provide for accurate analysis or the entire process is invalid (Table III).

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

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

6.0 Back round and Sam le Countin Time The amount of time devoted to counting 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 (Table IV).

6.5 Time Interval Between Sam le Collection and Countin Decay measurements are useful in identifying certain short-lived isotopes. The disintegration constant, or its related quantity, the half-life, is one of the basic characteristics of a specific radionuclide and is readily determined if the half-life is sufficiently short.

6.6 Chemical Recover of the Anal cal Procedures Most radiochemical analyses are carried out in such a way that losses occur during the separations. These losses occur due to a large number of contaminants that may be present and interfere during chemical separations.

Thus it is necessary to include a technique for estimating these losses in the development of the analytical procedure.

The Lower Limits of detection are calculated using the following formula:

LLD = 0.66 sb E ~

V 2.22 Y ~

exp (- >~ t)

WHERE:

LLD "A priori" lower limit of detection as defined above (as pCi per unit mass or volume).

sb Standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate (as counts per minute).

Counting efficiency (as counts per disintegration).

V Sample size (in units of mass or volume).

2.22 = Number of disintegrations per minute per picocurie.

Fractional radiochemical yield (when applicable).

Radioactive decay constant for the particular radioisotope.

bt Elapsed time between sample collection (or end of the sample collection period) and time of counting.

The value of sb*used in the calculation of the LLD for a particular measureme system is based on the actual observed variance of the background counting ra or, of the counting rate of the blank sample, {as appropriate), rather than on an unverified theoretically predicated variance.

In calculating the LLD for a radionuclide determined by gamma-ray spectrometry, the background included the typical contributions of other nuclides normally present in the samples.

The activities per. unit sample mass or volume are determined using the following formula:

C+B T2 C-B 1.96 (2,22) (V) (R) (E) (e- X t) (2 22) (V) (R) (E) (e- X t)

WHERE:

Activity as pCi per units sample mass or volume.

Sample count rate in counts per minute.

Background counts per minute.

Sample volume or mass analyzed.

Counter efficiency as cpm/dpm.

2.22 Numerical constant to convert disintegrations per minute to picocuries.

(e Xt) Decay factor to correct the activity to time of collection.

Counting time in minutes.

1.96 Statistical constant for the 95% confidence level.

Chemical recovery or photon yield.

6.7 Lower Levels of Detection (ASU)

The lower limits of detection (LLD) and the methods for calculation are specified in Table 2 of Section 7.2, Appendix B, of the agreement between th Palo Verde Nuclear Generating Station and the ASU Radiation Measurements Facility (RMF) (PV80-10153 revised 2/2/87).

The actual value of an LLD is dependent on many factors including, l) sample size and concentration, 2) counting time, 3) detector efficiency and inherent backgrounds, 0) chemical recovery, 5) self absorption, 6) quenching, and 7) the time delay between sample collection and counting. Therefore, it is very difficult to present specific, meaningful LLD values.

The RMF meets or exceeds all the LLDs specified in the agreement. In many instances, the actual LLDs are considerably lower than required.

7.0 ualit Control Pro ram (CEP)

CEP employs a multi-faceted Quality Control Program designed to maintain high performance of its laboratory. The overall objectives of the program are to:

l. Verify that work procedures are adequate to meet specifications of ANPP.

2. Coordinate an in-house quality control program independent of external programs, to assure that CEP is operating at maximum efficiency.

Objectives are met by a variety of procedures that oversee areas of sample receipt and handling, analysis and data review. These procedures include standard operating procedures, known and unknown spike analysis, blank analysis, reagent, carrier and nuclide standardization as well as participation in the U.S. Environmental Protection Agency's Interlaboratory Cross-check Program. (See Appendix A for EPA Radiological Cross-check results).

7.1 ualit Assurance Intercom arison Results (ASU) 7.1.1 Intercom arisons The Radiation Measurements Facility (RMF) routinely participates in intercomparisons sponsored by U.S. Environmental Protection Agency (EPA), U.S. Department of Energy Environmental Measurements Laboratory (DOE EML) and Canada's Department of National Health and Welfare. In 1987, on additional "inter'comparison was provided by the U.

Nuclear Regulatory Commission (USNRC). Thermoluminesce dosimetry (TLD) intercomparisons are conducted with Palo Verde Nuclear Generating Station and Oak Ridge National Laboratory.

EPA intercomparison results are listed in Appendix C. Gamma spectrometry results on samples with low levels of activity were improved, over the 1986 intercomparisons, by concentrating the sample prior to counting. Milk samples cannot be concentrated by evaporation, at least not in a practical way. Therefore, MDA's for milk are generally a factor of four higher.

The DOE EML Quality Assurance Program restarted in 1987. Results can be found in Appendix C.

In addition the RMF analyzed one USNRC sample which was supplied by PVNGS.

The RMF participated in a tritium spiked urine intercomparison with the Canadian Bureau of Radiological and Medical Devices. The results of the intercomparison are presented in Appendix C.

A charcoal cannister was spiked with iodine (I-131) by Analytics, Inc.,

Atlanta, Georgia and sent to the RMF for assay.

PVNGS and the RMF have been involved in a interlaboratory compariso program since 3uly 1983. On a quarterly basis the PVNGS Dosimetry

Section sends 20 Panasonic UD-812 AS5 TLD badges to the RMF. Upon receipt of the PVNGS badges the RMF randomly separates the badges into several groups. A known exposure to gamma radiation is given to each group of badges. After all groups have been exposed, they are returned to PVNGS for processing. The PVNGS Dosimetry Section then process the badges and returns the results to the RMF. The RMF calculates the performance (P) value for each badge. The "P" value is the difference between the read value and the actual exposure. The "P" values of all badges are averaged and the standard deviation calculated.

The value reported to PVNGS is the absolute value of the averaged "P" values plus the standard deviation. A value of 0.5 is considered passing (ANSI N13.ll). A similar procedure is performed on the RMF badges'by the PVNGS Dosimetry Section. The RMF sends badges on a monthly basis, and the RMF results are presented in Appendix C.

TABLE Hl ALI UOT SCANNED FOR DETECTION LIMITCALCULATION AND ACTUALANALYSIS (a)

Sam le T Air Particulates 265 m3 265 m3 265 m3 Airborne Radioiodine 265 m3 Domestic Meats (Beef) 500 g Fresh Milk 1000 mls 2000 mls 2000 mls 2000 mls Vegetation (Citrus Fruits) 500 g Vegetation (Leafy) 500 g 100 g Groundwater 1000 mls 1000 mls 1000 mls 1000 mls 3 ml Drinking Water 1000 mls 1000 mls 1000 mls 1000 mls 3 ml Surface Water 1000 mls 1000 mls 1000 mls 1000 mls 1000 mls 1000 mls 3 ml (a) CEP data

TABLE IV SAMPLE COUNTING TIMES (a)

Gamma Sam le T

~*'ir Particulates 100 min 100 min 8 hrs Airborne Radioiodine 8 hrs+

Domestic Meats (aeef) 8 hrs Fresh Milk 8 hrs 100 min 100 min 100 min Vegetation (Citrus Fruits) 8 hrs I

Vegetation (Leafy) 8 hrs 100 min Groundwater 100 min 100 min 8 hrs 100 min 50 min Drinking Water 100 min 100 min 8 hrs 100 min 50 min Surface Water 100 min 100 min 8 hrs 100 min 100 min 100 min 50 min

+Alkaline Leach Method Counted for 100 mins (a) CEP data

TABLE V DETECTION LIMITS BY OTHER THAN GAMMASPECTROMETRY (a)

Sam le T Strontium-90 Tritium Air Particulates 0.005 pCi/m3 0.002 pCi/m3 Airborne Radioiodine, 0.007 pCi/m3" +

Fresh Milk 0.5 pCi/1 1.0 pCi/1 0.5 pCi/1 Vegetation (Leafy) 0.02 pCi/g+

Groundwater 1.0 pCi/1 2.0 pCi/1 0.5 pCi/1 1000 pCi/1 Drinking Water 1.0 pCi/1 2.0 pCi/1 0.5 pCi/1 1000 pCi/1 C>

I Surface Water 1.0 pCi/1 2.0 pCi/1 0.5 pCi/1 1.0 pCi/1 0.5 pCi/1 1000 pCi/1

+As Wet Weight

++Alkaline Leach Method. I-131 Detection Limit by Gamma Spectrometry 0.020 pCi/m3 (a) CEP data

TABLE VI DETECTION LIMITS BY GAMMA SPECTROMETRY (a)

Sensitivity pCI/I+

Groundwater, Sensitivity Sensitivity Drinking Water Sensitivity pci/m3+

Energy pCI/gm+ and pCI/I+ Air MeV Isoto Ve etation Surface Water Fresh Milk Particulate 0.130 Cerium-100 0.121 17 10 0.005 0.537 Barium-100 0.075 0.030 0.605 Cesium-130 0.029 10 10 0.001 0.622 Ru, Rh-106 0.103 2 0.001 0.662 Cesium-137 0.056 0.001 0.765 Zr, Nb-95 0.066 0.026 0.811 Cobalt-58 0.020 0.001

0. 835 Manganese-50 0.021 0.001 1.095 Iron-59 0.021 3 3 0.006 1.115 Zinc-65 0.060 16 16 0.005 1.173 Cobalt-60 0.063 5 5 0.019 1.596 Lanthanum-100 0.065 0.030

+See Table GI for aliquots used in the calculation of these sensitivities.

(a) CEP data.

8.0 Data Inter retation and Conclusions Interpretations and conclusions regarding all types of samples analyzed during 1987 ar~

discussed in the following sections. Assessment of pre-operational and operational data revealed no significant changes to environmental radiation levels. There was no observed impact on the environment due to PVNGS operations.

8.1 Air Particulates Air particulate samples were collected from each of the twelve monitoring sites on a weekly basis during 1987.

Air filters were analyzed for Gross Alpha and Gross Beta activities. Gamma Spectralanalysis of the air filters was done on the individual filters for Stations IOA, 15A, 17A, 2IA, 29A and 00A due to the Salt Drift Monitoring Program.

Gamma Spectral analysis for the other stations was performed on quarterly composites by station.

Twenty five air particulate samples were marked as invalid upon arrival at CEP The samples and the reason for the statuses are listed below:

First uarter 1987 Date Collected Site 8 Reason 01/07/87 7A Redline exceeded 02/00/87 15A Low total flow 03/18/R7 Excessive flow rate 03/25/87 6A Excessive flow rate Second uarter 1987 Date Collected Site $$ Reason oe/IS/87 6A Excessive flow rate 06/10/87 6A Flow rate 06/17/87 IA,OOA Redline exceeded Third uarter 1987 Date Collected Site /E Reason 07/21/87 35A Sampler malfunction-07/28/87 IOA, 17A Loss of power 07/28/87 35A ETM malfunction 08/00/87 17A P um p mal function 09/01/87 IA,17A)00A Redline exceeded 09/08/87 00A Redline exceeded 09/15/87 IA,OA,17A,OOA Redline exceeded 09/22/87 IA,17A,OOA Redline exceeded Fourth uarter 1987 Date Collected Site /f Reason IO/06/87 IA,OA~17A~OOA Redline exceeded 10/27/87 IA Redline exceeded 10/27/87 21A ETM malfunction II/ZO/87 35A Redline exceeded 12/29/87 IA Redline exceeded Table Vll presents first quarter Gross Beta results. Station 6A showed the highest activity during the quarter (0.007+0.002 -pCi/m3) collected Ol/07/87.

Station 6A showed the lowest activity (0.012+0.002 pCi/m3) collected on 02/18/87. IVeekly mean activities ranged from a low of 0.010+0.002 pCi/m3 during the week of 02/ll/87-02/18/87 to a high of 0.003+0.002 pCi/m3 in the week of 12/30/86-01/07/87. The range of results are comparable to previous quarterly data and do not indicate any anomalies.

Table VIII presents second quarter Gross Beta results. Several stations showed the highest activity during the quarter of 0.031+0.002 pCi/m3. The Station 6A sample collected 06/10/87-06/17/87 showed the lowest level at 0.017+0.002

-pCi/m3. Weekly mean activities ranged from a low of 0.020 pCi/m3 during the periods of 00/Ol/87-00/08/87 and 06/10/87-06/17/87 to a high of 0.029+0.00.

pCi/m3 in the weeks of 05/13/87-05/20/87 and 05/27/87-06/03/87; Table IX presents the Gross Beta levels during the third quarter of 1987. The lowest value of 0.015+0.002 pCi/m3 was observed at station 00A collected during the week of 08/II/87-08/18/87. The highest level of activity was 0.000+0.002 pCi/m3 at Station 29A during the collection period of 09/15/87-09/22/87.

Weekly mean activities ranged from a minimum of 0.018+0.002 pCi/m3 (08/ll/87-08/18/87), to a maximum of 0.037+0.002 pCi/m3 in the period of 09/15/87-09/22/87. The range of results are comparable to previous quarterly data and do not indicate any anomalies.

Table X presents the Gross Beta activities seen in the fourth quarter. Observe levels varied from 0.016+0.002 pCi/m3 at Station 00A (collected II/03/87-ll/IO/87), to 0.055+0.003 pCi/m3 at several stations collected on II/20/87-12/Ol/87. Weekly mean activities ranged from 0.019+0.002 pCi/m3 during the collection period of I I/03/87-11/10/87 to 0.050+0.005 pCi/m3 collected Il/20/87-12/01/87. Based on data from other nuclear reactor environmental monitoring programs, the trend for Gross Beta in air particulates for the PVNGS during the fourth quarter of 1987 is similar to those for other reactor sites located west of the Mississippi River.

Table XI contains the mean Gross Beta activities by station. Mean quarterly activities are calculated using all weekly activities except those marked invalid.

Mean activities for each quarter ranged from a low of 0.020+0.000 at several stations during the year, to a high of 0.038+0.009 pCi/m at Station 21A in the fourth quarter.

The average Cross Beta activity for each quarter is as follows:

Ci/m3 First Quarter 1987 0.028 + 0.008 Second Quarter 1987 0.025 + 0.002 Third Quarter 1987 0.026 + 0.000 Fourth Quarter 1987 0.030 + 0.006 No man-made Gamma-emitting nuclides were detected in any of the air filter samples collected during 1987.

Tables XII thru XV show the Cross Alpha activity for each week during 1987.

Gross Alpha activity was detected in five samples collected in 1987. This data is consistent with the activity seen during preoperational monitoring.

TABLE Vll GROSS BETA IN AIR PARTICULATE DATA ( Ci/m+3 FIRST UARTER 1987 Collection Period Station IA Station OA Station 6A Station 7A Station IOA Station 15A Station 17A 12/30/86 - 01/07/87 0.000+0.002 0.000+0.002 0.007+0.002 0.000+0.002 0.039+0.002 0.001+0.002 0.003+0.002 01/07/87 - 01/10/87 0.029+0.002 0.030+0.002 0.032+0.002 0.037+0.002 0.030+0.002 0.032+0.002 0.030+0.002 OI/IO/87 - 01/21/87 0.039+0.002 0.002+0.002 0.003+0.002 0.001+0.002 0.039+0.002 0.000+0.002 0.001+0.002 01/21/87 - Ol/28/87 0.038+0.002 0.037+0.002 0.039+0.002 0.001+0.002 0.035+0.002 0.035+0.002 0.033+0.002 01/28/87 - 02/00/87 0.033+0.002 0.032+0.002,. 0.035+0.002 0.036+0.002 0.036+0.002 0.036+0.002 0.030+0.002 02/00/87 - 02/11/87 0."020+0.002 0.026+0.002 0.023+0.002 0.025+0.002 0.020+0.002 0.027+0.002 0.020+0.002 o 02/11/87 - 02/18/87 0.013+0.002 0.010+0.002 0.012+0.002 0.015+0.002 0.010+0.002 0.013+0.002 0.013+0.002 02/18/87 - 02/25/87 0.018+0.002 0.019+0.002 0.018+0.002 0.018+0.002 0.019+0.002 0.018+0.002 0.018+0.002 02/25/87 - 03/00/87 0.022+0.002 0.027+0.002 0.025+0.002 0.037+0.002 0.026+0.002 0.025+0.002 0.028+0.002 03/00/87 - 03/11/87 0.032+0.002 0.031+0.002 0.029+0.002 0.032+0.002 0.020+0.002 0.020+0.002 0.020+0.002 03/11/87 - 03/18/87 0.021+0.002 0.018+0.002 0.021+0.002 0.021+0.002 0.020+0.002 0.018+0.002 0.016+0.002 03/18/87 - 03/25/87 0.017+0.002 0.018+0.002 0.017+0.002 0.015+0.002 0.015+0.002 0.015+0.002 0.015+0.002 03/25/87 - 00/OI/87 0.022+0.002 0.025+0.002 0.020+0.002 0.023+0.002 0.020+0.002 0.020+0.002 0.021+0.002

TA E VII (Cont.)

GROSS BETA IN AIR PARTICULATE DATA ( Ci/m3 FIRST UARTER 1987 Vfeekly Mean Gross Beta Activities

+ Standard Deviation Collection Period Station 21A Station 29A Station 35A -

Station.OOA Station 00A of the Mean 12/30/86 01/07/87 0.000+0.002 0.000+0.002 0.039+0.002 0.002+0.002 0.001+0.002 0.003+0.002 01/07/87 - 01/10/87 0.030+0.002 0.033+0.002 0.032+0.002 0.033+0.002 0.026+0.002 0.032+0.003 01/10/87 01/21/87 0.002+0.002 0.002+0.002 0.000+0.002 0.000+0.002 0.003+0.002 0.002+0.002 01/21/87 01/28/87 0.000+0.002 0.039+0;002 0.035+0.002 0.037+0.002 0.032+0.002 0.037+0.003 01/28/87 - 02/00/87 0.036+0.002 0.037+0.002 0.036+0.002 0.035+0.002 0.027+0.002 0.030+0.003 02/00/87 - 02/11/87 0.027+0.002 0.028+0.002 0.023+0.002 0.025+0.002 0.026+0.002 0.025+0.002 02/11/87 - 02/18/87 0.0 I 0+0.002 0.010+0.002 0.010+0.002 0.017+0.002 0.018+0.002 0.010+0.002 02/18/87 -'2/25/87 0.019+0.002 0.019+0.002 0.016+0.002 0.021+0.002 0.018+0.002 0.018+0.001 02/25/87 - 03/00/87 0.025+0.002 0.025+0.002 0.026+0.002 0.023+0.002 0.027+0.002 0.026+0.000 03/00/87 - 03/11/87 0.037+0.002 0.036+0.002 0.031+0.002 0.036+0.002 0.025+0.002 0.030+0.005 03/11/87 - 03/18/87 0.020+0.002 0.019+0.002 0.016+0.002 0.019+0.002 0.019+0.002 0.019+0.002 03/18/87 03/25/87 0.015+0.002 0.015+0.002 0.016+0.002 0.013+0.002 0.015+0.002 0.016+0.001 03/25/87 00/01/87 0.022+0.002 0.022+0.002 0.022+0.002 0.021+0.002 0.019+0.002 0.022+0.002

TABLE VIII GROSS BETA IN AIR PARTICULATE DATA ( Ci/m3 SECOND UARTER 1987 Collection Period Station 1A Station OA Station 6A Station 7A Station 10A Station 15A Station 17A 00/01/87 00/08/87 0.020+0.002 0.020+0.002 0.018+0.002 0.019+0.002 0.020+0.002 0.019+0.002 0.018+0.002 00/08/87 - 00/15/87 0.025+0.002 0.030+0.002 0.030+0.002 0.026+0.002 0.028+0.002 0.028+0.002 0.025+0.002 00/15/87 - 00/22/87 0.020+0.002 0.026+0.002 0.023+0.002 0.026+0.002 0.026+0.002 0.027+0.002 0.021+0.002 00/22/87 - 00/29/87 0.026+0.002 0.020+0.002 0.023+0.002 0.020+0.002 0.020+0.002 0.027+0.002 0.025+0.002 00/29/87 - 05/06/87 0.023+0.002 0.026+0.002 0.020+0.002 0.026+0.002 0.023+0.002 0.025+0.002 0.023+0.002 05/06/87 - 05/13/87 0.020+0.002 0.026+0.002 0.020+0.002 0.025+0.002 0.026+0.002 0.023+0.002 0.020+0.002 05/13/87 - 05/20/87 0.029+0.002 0.031+0.002 0.031+0.002 0.030+0.002 0.028+0.002 0.028+0.002 0.029+0.002 05/20/87 05/27/87 0.027+0.002 0.028+0.002 0.030+0.002 0.025+0.002 0.025+0.002 0.020+0.002 0.026+0.002 05/27/87 06/03/87 0.026+0.002 0.029+0.002 0.029+0.002 0.029+0.002 0.030+0.002 0.031+0.002 0.030+0.002 06/03/87 06/10/87 0.020+0.002 0.022+0.002 0.028+0.002 0.020+0.002 0.023+0.002 0.023+0.002 06/10/87 - 06/17/87 0.022+0.002 0.019+0.002 0.017+0.002 0.020+0.002 0.019+0.002 0.020+0.002 0.020+0.002 06/17/87 - 06/20/87 0.026+0.002 0.023+0.002 0.023+0.002 0.027+0.002 0.021+0.002 0.020+0.002 0.026+0.002 06/20/87 - 07/01/87 0.022+0.002 0.022+0.002 0.022+0.002 0.026+0.002 0.026+0.002 0.021+0.002 0.023+0.002

++Invalid sample

T VIII (Cont.)

GROSS BETA IN AIR PARTICULATE DATA ( Ci/m>3 SECOND UARTER 1987 Weekly Mean Gross Beta Activities

+ Standard Deviation Collection Period Station 21A Station 29A Station 35A Station 00A Station 00A of the Mean 00/01/87 -'00/08/87 0.023+0.002 0.019+0.002 0.021+0.002 0.019+0.002 0.018+0.002 0.020+0.001 00/08/87 - 00/15/87 0.026+0.002 0.027+0.002 0.023+0.002 0.027+0.002 0.025+0.002 0.027+0.002 00/15/87 - 00/22/87 0.025+0.002 0.025+0.002 0.025+0.002 0.026+0.002 0.025+0.002 0.025+0.002 00/22/87 00/29/87 0.020+0.002 0.020+0.002 0.026+0.002 0.020+0.002 0.020+0.002 0.025+0.001 00/29/87 05/06/87 '0.025+0.002 0.026+0.002 0.025+0.002 0.025+0.002 0.020+0.002 0.025+0.001 05/06/87 - 05/13/87 0.020+0.002 0.020+0.002 0.025+0.002 0.027+0.002 0.022+0.002 0.025+0.001 05/13/87 - 05/20/87 0.031+0.002 0.030+0.002 0.027+0.002 0.029+0.002 0.029+0.002 0.029+0.001 05/20/87 - 05/27/87 0.025+0.002 0.028+0.002 0.023+0.002 0.025+0.002 0.030+0.002 0.026+0.002 05/27/87 - 06/03/87 0.028+0.002 0.030+0.002 0.031+0.002 0.028+0.002 0.028+0.002 0.029+0.001 06/03/87 - 06/10/87 0.023+0.002 0.023+0.002 0.027+0.002 0.020+0.002 0.025+0.002 0.020+0.002 06/10/87 - 06/17/87 0.020+0.002 0.023+0.002 0.018+0.002 0.019+0.002 0.023+0.002 0.020+0.002 06/17/87 - 06/20/87 0.020+0.002 0.020+0.002 0.023+0.002 0.020+0.002 0.020+0.002 0.020+0.002 06/20/87 - 07/01/87 0.023+0.002 0.021+0.002 0.020+0.002 0.020+0.002 0.022+0.002 0.023+0.002

TABLEX IX GROSS BETA IN AIR PARTICULATE DATA ( Ci/m3 1987 Collection Period Station lA Station OA Station 6A Station 7A Station IOA Station 15A Station 17A 07/01/87 - 07/07/87 0.027+0.002 0.028+0.002 0.028+0.002 0.028+0.002 0.028+0.002 0.031+0.002 0.033+0.002 07/07/87 - 07/10/87 0.023+0.002 0.021+0.002 0.021+0.002 0.022+0.002 0.022+0.002 0.023+0.002 0.025+0.002 07/10/87 - 07/21/87 0.021+0.002 0.020+0.002 0.019+0.002 0.020+0.002 0.020+0.002 0.020+0.002 0.020+0.002 07/21/87 - 07/28/87 0.019+0.002 0.020+0.002 0.017+0.002 0.022+0.002 0.023+0.002 07/28/8? - 08/00/87 0.020+0.002 0.018+0.002 0.021+0.002 0.020+0.002 0.020+0.002 0.025+0.002 08/00/87 - 08/II/87 0.026+0.002 0.025+0.002 0.026+0.002 0.020+0.002 0.025+0.002 0.026+0.002 0.026+0.002 08/11/87 08/18/87 0.018+0.002 0.018+0.002 0.020+0.002 0.016+0.002 0.019+0.002 0.017+0.002 0.021+0.002 08/18/87 - 08/25/87 0.026+0.002 0.025+0.002 0.028+0.002 0.026+0.002 0.029+0.002 0.020+0.002 0.027+0.002 08/25/87 - 09/01/87 0.032+0.002 0.032+0.002 0.033+0.002 0.031+0.002 0.032+0.002 09/01/87 - 09/08/87 0.035+0.002 0.033+0.002 0.029+0.002 0.033+0.002 0.036+0.002 0.035+0.002 09/08/87 - 09/15/87 0.030+0.'002'.026+0.002 0.026+0.002 0.027+0.002 0.020+0.002 0.027+0.002 09/15/87 - 09/22/87 0.037+0.002 0.038+0.002 0.037+0.002 0.037+0.002 0.035+0.002 09/22/87 09/29/87 0.025+0.002 0.033+0.002 0.027+0.002 0.028+0.002 0.031+0.002 0.030+0.002

++Invalid sample.

T IX (Cont.)

CROSS BETA IN AIR PARTICULATE DATA ( Ci/m+3 Il"*

1987 Weekly Mean Gross Beta Activities

+ Standard Deviation Collection Period Station 21A Station 29A Station 35A Station 00A - Station 00A of the Mean 07/01/87 - 07/07/87 0.027+0.002 0.029+0.002 0.031+0.002 0.030+0.002 0.031+0.002 0.029+0.002 07/07/87 - 07/10/87 0.023+0.002 0.021+0.002 0.029+0.002 0.022+0.002 0.022+0.002 0.023+0.002 07/10/87 - 07/21/87 -

0.022+0.002 0.020+0.002 0.016+0.002 0.019+0.002 0.020+0.002 07/21/87 - 07/28/87 0.020+0.002 0.020+0.002 0.017+0.002 0.025+0.002 0.020+0.003 07/28/87 - 08/00/87 0.020+0.002 0.023+0.002 0.020+0.002 0.019+0.002 0.018+0.002 0.020+0.002 08/00/87 - 08/11/87 0.023+0.002 0.020+0.002 0.026+0.002 0.025+0.002 0.028+0.002 0.025+0.001 08/11/87 - 08/18/87 0.018+0.002 0.016+0.002 0.018+0.002 0.018+0.002 0.015+0.002 0.018+0.002 08/18/87 - 08/25/87 0.032+0.002 0.027+0.002 0.028+0.002 0.026+0.002 0.026+0.002 0.027+0.002 08/25/87 - 09/01/87 0.031+0.002 0.030+0.002 0.030+0.002 0.027+0.002 0.031+0.002 09/01/87 - 09/08/87 0.035+0.002 0.030+0.002 0.038+0.002 0.032+0.002 0.030+0.002 09/08/87 - 09/15/87 0.025+0.002 0.029+0.002 0.026+0.002 0.026+0.002 0.026+0.001 09/15/87 - 09/22/87 0.035+0.002 0.000+0.002 0.033+0.002 0.037+0.002 0.037+0.002 09/22/87 09/29/87 0.031+0.002 0.031+0.002 0.027+0.002 0.020+0.002 0.022+0.002 0.028+0.003

++Invalid sample

TABLE X GROSS BETA IN AIR PARTICULATEDATA ( Ci/m3)

FOURTH UARTER 1987 Collection Period Station IA Station OA Station 6A Station 7A Station 10A Station 15A Station 17A 09/29/87 - 10/06/87 0.001+0.002 0.000+0.002 0.002+0.002 0.001+0.002 10/06/87 - 10/13/87 0.038+0.002 0.030+0.002 0.038+0.002 0.037+0.002 0.038+0.002 O.OOQ+0.002 0.039+0.002 10/13/87 - 10/20/87 0.035+0.002 0.038+0.002 0.036+0.002 0.002+0.002 0.006+0.002 0.039+0.002 0.003+ Q.002 10/20/87 - 10/27/87 0.020+0.002 0.025+0.002 0.020+0.002 0.026+0.002 0.029+0.002 0.026+0.002 10/27/87 - 11/03/87 0.021+0.002 0.020+0.002 0.020+0.002 0.021+0.002 0.020+0.002 0.030+0.000 ,0.025+0.Q02 11/03/87 - 11/10/87 0.021+0.002 0.018+0.002 0.018+0.002 0.019+0.002 0.019+0.002 0.018+0.002 0.018+0.Q02 I I/10/87 - 11/17/87 0.033+0.002 0.030+0.002 0.037+0.002 0.038+0.002 0.036+0.002 0.002+0.002 I I/17/87 - I I/20/87 0.026+0.002 0.032+0.002 0.031+0.002 0.029+0.002 0.025+0.002 0.027+0.002 II/20/87 - 12/01/87 0.001+0.002 0.050+0.002 0.055+0.003 0.052+0.003 0.002+0.002 0.052+0.002 12/01/87 - 12/08/87 0.002+0.002 0.007+0.002 0.007+0.003 0.003+0.002 0.000+0.002 0.002+0.002 12/08/87 - 12/15/87 0.031+0.002 0.039+0.002 0.035+0.002 0.028+0.002 0.029+0.002 0.032+0.002 12/15/87 - 12/22/87 0.033+0.002 0.030+0.002 0.037+0.002 0.035+0.002 0.030+0.002 0.032+0.002 12/22/87 - 12/29/87 0.028+0.002 0.028+0.002 0.035+0.002 0.036+0.002 0.030+0.002 0.038+0.002 0.032+0.002

++Invalid sample aSample not collected

X (Cont.)

GROSS BETA IN AIR PARTICULATE DATA ( Ci/m3 FOURTH UARTER 1987 Weekly Mean Gross Beta Activities

+ Standard Deviation Collection Period Station 21A Station 29A Station 35A Station 00A Station 00A of the Mean 09/29/87 - 10/06/87 0.00 1+0.002 0.001+0.002 0.001+0.002 0.039+0.002 0.001+0.001 10/06/87 10/13/87 0.005+0.002 0.001+0.002 0.001+0.002 0.053+0.002 0.036+0.002 0.000+0.005 10/13/87 - 10/20/87 0.002+0.002 0.000+0.002 0.038+0.002 0.002+0.002 0.036+0.002 0.000+0.000 10/20/87 - 10/27/87 0.029+0.002 0.029+0.002 0.026+0.002 0.031+0.002 0.027+0.002 10/27/87 - 11/03/87 0.022+0.002 0.021+0.002 0.021+0.002 0.018+0.002 0.018+0.002 -

0.022+0.000 11/03/87 - 11/10/87 0.021+0.002 0.017+0.002 0.016+0.002 0.019+0.002.

ll/10/87 - 11/17/87 0.002+0.002 0.039+0.002 0.033+0.002 0.038+0.002 0.037+0.003 II/17/87 - II/20/87 0.030+0.002 0.032+0.002 0.029+0.002++ 0.031+0.002 a 0.030+0.003 II/20/87 12/01/87 0.055+0.003 . 0.055+0.003 0.008+0.003 0.051+0.003 0.050+0.005 12/01/87 - 12/08/87 0.003+0.002 0.052+0.002 0.001+0.002 0.052+0.003 0.005+0.000 12/08/87 - 12/15/87 0.001+0.003 0.032+0.002 0.028+0.002 0.030+0.000 12/15/87 - 12/22/87 0.036+0.002 '.038+0.002 '.035+0.002 0.037+0.002 0.030+0.003 12/22/87 - 12/29/87 0.036+0.002 0.032+0.002- 0.031+0.002 0.030+0.002 0.033+0.003

+Less than lower limit of detection (0.002 pCi/m3)

++Invalid sample aSample not collected

TABLE XI GROSS BETA IN AIR PARTICULATE ( Ci/m3)

STATION

SUMMARY

1987 Mean Activit First Second Third Fourth Station uarter uarter uar,ter uarter IA 0.027+0.010 0.020+0.002 0.020+0.005 0.029+0.008 0.028+0.009 0.025+0.000 0.025+0.006 0.031+0.007 6A 0.028+0.011 0.025+0.005 0.027+0.006 0.030+0.009 7A 0.030+0.011 0.025+0.003 0.026+0.006 0.035+0.010 lOA 0.027+0.009 0.025+0.003 0.026+0.006 0.035+0.010 15A 0.027+0.010 0.025+0.000 0.027+0.005 0.035+0.007 17A 0.026+0.010 0.020+0.003 0.027+0.005 0.030+0.010 21A 0.029+0.011 0.025+0.003 0.026+0.006 0.038+0.009 29A 0.029'+0.010 0.025+0.003 0.027+0.007 0.037+0.011 35A 0.027+0.009 0.020+0.003 0.028+0.006 0.035+0.008 00A 0.028+0.010 0.025+0.003 0.020+0.006 0.036+0.012 00A 0.026+0.009 0.025+0.003 0.020+0.006 0.030+0.009

LE XII GROSS ALPHA IN AIR PARTICULATE DATA ( Ci/m>3 1987 Collection Period Station 1A Station OA Station 6A Station 7A Station 10A Station 15A Station 17A 12/30/86 01/07/87 01/07/87 01/10/87 01/10/87 - 01/21/87 01/21/87 01/28/87 01/28/87 02/00/87 02/00/87 - 02/11/87 v .

02/11/87 - 02/18/87 02/18/87 - 02/25/87 02/25/87 - 03/00/87 03/00/87 - 03/11/87 03/11/87 - 03/18/87 03/18/87 - 03/25/87 03/25/87 - 00/Ol/87

+Less than lower limit of detection (0.005 pCi/m3)

TABLE Xll (Cont.)

GROSS ALPHA IN AIR PARTICULATE DATA ( Ci/m3) r!"

1987 Collection Period Station 2IA Station 29A Station 35A Station OOA .Station 00A 12/30/86 - ol/o7/s7 0.005+0.001 01/07/87 OI/Io/87 OI/Io/87 01/21/87 01/21/87 - 01/28/87 01/28/87 - 02/00/87 02/00/87 - 02/I I/87 02/Il/87 02/18/87 02/18/87 - O2/25/87 02/25/87 - 03/00/87 03/oe/87 - 03/11/87 0.005+0.001 0.006+0.001 03/11/87 - 03/18/87 03/18/87 - O3/25/S7 03/25/87 - oo/oi/87

+Less than lower limit of detection (0.005 pCi/m3)

BLE XIII GROSS ALPHA IN AIR PARTICULATE DATA ( Ci/m3 E

1987 Collection Period Station 1A Station OA Station 6A Station 7A Station 10A Station 15A Station 17A 00/01/87 00/08/87 00/08/87 - 00/15/87 00/15/87 00/22/87 00/22/8? - 00/29/87 00/29/87 - 05/06/87 05/06/87 - 05/13/87 05/13/87 - 05/20/87 05/20/87 - 05/27/87 05/27/87 - 06/03/87 06/03/87 - 06/10/87 06/10/87 - 06/17/87 06/17/87 - 06/20/87 06/20/87 07/01/87

+Less than lower limit of detection (0.005 pCi/m3)

++Invalid sample

TABLE XIII (Cont.)

GROSS ALPHA IN AIR PARTICULATE DATA ( Ci/m3)

SECOND UARTER 1987 Collection Period Station 21A Station 29A Station 35A Station OOA Station 00A 00/OI/87 - 00/08/87 oe/08/87 - 0O/15/87 00/15/87 - 00/22/87 00/22/87 - 00/29/87 00/29/87 - 05/06/87 05/06/87 - 05/13/87 05/13/87 - 05/20/87 05/20/87 - 05/27/87 05/27/87 - 06/03/87 06/03/87 06/10/87 06/10/87 - 06/17/87 06/17/87 - 06/20/87 06/20/87 07/01/87

+Less than lower limit of detection (0.005 pCi/m3)

LE XIV GROSS ALPHA IN AIR PARTICULATE DATA ( Ci/m3 1987 Collection Period Station lA Station OA Station 6A Station 7A Station 10A Station 15A Station 17A o7/ol/87- 07/07/87 07/07/87 07/10/87 o7/le/8707/21/87 07/21/87- 07/28/87 07/28/87- 08/oo/87 08/oo/87 08/1 1/87 os/11/87- 08/18/87 08/18/87 08/25/87 08/25/87- 09/01/87 09/01/87- 09/08/87 09/08/87 09/15/87 09/15/87 09/22/87 09/22/87- 09/29/87

+Less than lower limit of detection (0.005 pCi/m3)

++Invalid sample

TABLE XIV (Cont.)

GROSS ALPHA IN AIR PARTICULATE DATA ( Ci/m+3 THIRD VARTER 198?

Collection Period Station 2IA Station 29A Station 35A Station OOA Station 00A 07/01/87 - 07/07/87 07/07/87 - 07/10/87 07/10/87 - 07/21/87 07/21/87 07/28/87 07/28/87 - 08/00/87 08/00/87 - 08/ll/87 cI 08/11/87 - 08/18/87 08/18/87 - 08/25/87 08/25/87 09/01/87 09/Ol/87 09/08/87 09/08/87 - 09/15/87 09/15/87 09/22/87 09/22/87 - 09/29/87

+Less than lower limit of detection (0.005 pCi/m3)

++Invalid sample

LE XV GROSS ALPHA IN AIR PARTICULATE DATA ( Ci/m3 1987 Collection Period Station IA Station OA Station 6A Station 7A Station 10A Station 15A Station 17A 09/29/87 - 10/06/87 10/06/87 - 10/13/87 10/13/87 - 10/20/87 10/20/87 - 10/27/87 10/27/87 - 11/03/87 0.008+0.002 0.007+0.001 11/03/87 11/10/87 11/10/87 - 11/17/87 I I/17/87 - 11/20/87 I I/20/87 - 12/01/87 12/01/87 - 12/08/87 12/08/87 - 12/15/87 12/15/87 - 12/22/87 12/22/87 - 12/29/87

+Less than lower limit of detection (0.005 pCi/m3)

++Invalid sample Sample not collected

TABLE XV (Cont.)

GROSS ALPHA IN AIR PARTICULATE DATA ( Ci/m+3 FOURTH UARTER 1987 Collection Period Station 21A Station 29A Station 35A Station 00A Station 00A 09/29/87 - 10/06/87 10/06/87 - 10/13/87 10/13/87 10/20/87 10/20/87 - 10/27/87 10/27/87 - 11/03/87 11/03/87 - 11/10/87 I I/10/87 - II/17/87 I I/17/87 I I/20/87 I I/20/87 - 12/01/87 12/01/87 - 12/08/87 12/08/87 - 12/15/87 12/15/87 12/22/87 12/22/87 - 12/29/87

<<Less than lower limit of detection (0.005 pCi/m3)

<<<<Invalid sample Sample not collected

Figure 3 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIVITY-1987 STATION 1A

.100

.075 C3 Q.

.050 I

I (3

.025 13 26 52 V/EEK

Figure 4 GROSS BETA IN AIR PARTICULATES NEEKLY ACTIVITY-1987 STATION 4A

.100

.075 a

C3 Q.

.050

.025 26

Figure 5 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIVITY-1987 STATION BA

.100

.075 Va Vl IU CL

.050 I

I

.025 26 52 WEEK

Figure 6 GROSS BETA IN AIR PARTICULATES V/EEKLY ACTIVITY-1987 STATION 7A

.100

.075 LA C3 O.

.050 0-I I

D

.025

0 Figure 7 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIVITY-1987 STATION 14A 100

.075

.025 26 WEEK

Figure 8 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIYITY-1987 STATION 15A

.100

.075 00 (3

CL

.OS0 0-I I

C3

.025 0 26 52

Figure 9 GROSS BETA IN AIR PARTICULATES V/EEKLY ACTIVITY-1987 STATION 17A

.100

.075 C3 Q.

.050 0-I C3

.025 26 52 V/EEK

Figure 10 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIVITY-1987 STATION 21A

.100

.075 Ch O

CL

.050 0-I.

I (3

.025

Figure I

'I GROSS BETA IN AIR PARTICULATES WEEKLY ACTIVITY-1987 STATION 29A

.100

.075 w

CL

.QSQ 0-I C3

.025 26 52 V/EEK

Figure )2 GROSS BETA IN.AIR PARTICULATES

'IlIlEEKLY ACTIVITY-1987 STATIQN 35A

.100

.075 Ch U

Q.

.050 0-I D

.025 26 52

Figure f3 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIVITY-1987 STATION 40A

.075 C3 O.

.050 0-

)

I D

.025 26 52 V/EEK

Figure 14 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIVITY-1987 STATION 44A

.100

.075 o W C3 CL

.050 0-I I

C3

.025 52

Figure 15 GROSS BETA IN AIR PARTICULATES MEAN IIEEKLY ACTIVITY 1982-1987 Preoperational Operational

.6 u-C3 CL

.4 I

Chernobyl C3

.2 82 85 86 YEAR

8.2 Airborne Radioiodine Samples for airborne radioiodine monitoring are collected concurrently with th air particulate samples. These samples are collected in charcoal cartridges and analyzed for Iodine-131.

As can be seen in Table XVI one radioiodine sample collected during the first quarter of 1987 showed observable Iodine-131 activity.

The second quarter of 1987 indicated two samples with observable Iodine-131 activity (Table XVII).

Third quarter radioiodine data may be found in Table XVII. One sample indicated Iodine-131 activity above the detection limit of 0.007 pCi/m3.

As can be seen in Table XIX seven samples collected during the fourth quarter of 1987 showed observable Iodine-131 acitivty.

LE XVI AIRBORNE RADIOIODINE FIRST UARTER 1987 Collection Period Station 1A Station OA Station 6A Station 7A Station 10A Station 15A Station 17A 12/30/86 - 01/07/87 01/07/87 - 0 1/10/87 01/10/87 - 01/21/87 01/21/87 01/28/87-01/28/87 - 02/00/87 02/00/87 - 02/11/87 02/11/87 - 02/18/87 02/18/87 - 02/25/87 02/25/87 - 03/00/87 03/00/87 03/11/87 03/11/87 03/18/87 03/18/87 03/25/87 03/25/87 - 00/01/87

+Less than lower limit of detection (0.007 pCi/m3)

TABLE XVI (Cont.)

AIRBORNE RADIOIODINE FIRST UARTER 1987 Collection Period Station 21A Station 29A Station 35A Station 00A Station 00A 12/30/86 01/07/87 01/07/87 - 01/10/87 01/10/87 - 01/21/87 01/21/87 - 01/28/87 01/28/87 - 02/00/87 02/00/87 - 02/11/87 02/11/87 - 02/18/87 02/18/87 - 02/25/87 02/25/87 - 03/00/87 03/00/87 - 03/11/8? 0.016+0.000 03/11/87 - 03/18/87 03/18/87 - 03/25/87 03/25/87 - 00/01/87

+Less than lower limit of detection (0.007 pCi/m3)

LE XVH AIRBORNE- RADIOIODINE 1987 Collection Period Station 1A Station OA Station 6A Station 7A Station 10A Station 15A Station 17A 00/01/87 00/08/87 0.008+0.005 00/08/87 - 00/15/87 00/15/87 - 00/22/87 00/22/87 - 00/29/87 00/29/87 - 05/06/87 05/06/87 - 05/13/87 05/13/87 - 05/20/87 05/20/87 05/27/87

. 05/27/87 06/03/87 06/03/87 - 06/10/87 06/10/87 06/1?/87 06/17/87 06/20/87 06/20/87 - 07/01/87

+Less than lower limit of detection (0.007 pCi/m3)

++Invalid sample

TABLE XVH (Cont.)

AIRBORNE RADIOIODINE SECOND UARTER 1987 Collection Period Station 21A Station 29A Station 35A Station 00A Station 00A 00/01/87 - 00/08/87 00/08/87 - 00/15/87 0.012+0.005 00/15/87 - 00/22/87

. 00/22/87 - 00/29/87 00/29/87 - 05/06/87 05/06/87 - 05/13/87 05/13/87 - 05/20/87 05/20/87 - 05/27/87 05/27/87 - 06/03/87 06/03/87 - 06/10/87 06/10/87 06/17/87 06/17/87 - 06/20/87 06/20/87 07/01/87

+Less than lower limit of detection (0.007 pCi/m3)

LE XVIII AIRBORNE RADIOIODINE THIRD UARTER 1987 Collection Period Station 1A Station OA Station 6A Station 7A Station 10A Station 15A Station 17A 07/01/87 - 07/07/87 07/07/87 - 07/10/87 07/10/87 - 07/21/87 0.013+0.003 07/21/87 - 07/28/87 07/28/87 - 08/00/87 08/00/87 08/11/87 08/11/87 - 08/18/87 08/18/87 08/25/87 08/25/87 09/01/87 09/01/87 - 09/08/87 09/08/87 - 09/15/87 09/15/87 - 09/22/87 09/22/87 - 09/29/87

+Less than lower limit of detection (0.007 pCi/m3)

++Invalid sample

TABLE XVIII(Cont.)

AIRBORNE RADIOIODINE THIRD UARTER 1987 Collection Period Station 21A Station 29A Station 35A Station 00A Station 00A 07/Ol/87 07/07/87 07/07/87 07/10/87 07/IO/87 07/21/87 07/21/87 - 07/28/87 07/28/87 - 08/00/87 08/00/87 08/II/8?

08/I I/87 - 08/18/87 08/18/87 08/25/87 08/25/87 - 09/01/87 09/01/87 09/08/87 09/08/87 - 09/15/87 09/15/87 - 09/22/87 09/22/87 09/29/87

+Less than lower limit of detection (0.007 pCi/m3)

++Invalid sample

LE XIX AIRBORNE RADIOIODINE T

1987 Collection Period Station 1A Station OA Station 6A Station 7A Station IOA Station 15A Station 17A 09/29/87 - 10/06/87 10/06/87 - 10/13/87 10/13/87 - 10/20/87 10/20/87 - 10/27/87 10/27/87 - 11/03/87 11/03/87 - 11/10/87 11/10/87 - 11/17/87 1 1/17/87 - I 1/20/87 0.020+0.006b 0.010+0.000b 11/20/87 - 12/01/87 12/01/87 - 12/08/87 12/08/87 - 12/15/87 12/15/87 - 12/22/87 12/22/87 - 12/29/87 0 008+0 oosb 0.020+0.006b

+Less than lower limit of detection (0.007 pCi/m3)

++Invalid sample bVerified by tS analysis

TABLE XIX (Cont )

AIRBORNE RADIOIODINE FOURTH UARTER 1987 Collection Period Station 21A Station 29A Station 35A Station 00A Station 00A 09/29/87 - 10/06/87 10/06/87 - 10/13/87 10/13/87 - 10/20/87 10/20/87 - 10/27/87 10/27/87 - 11/03/87 11/03/87 - 11/10/87 11/10/87 - 11/17/87 1 1/17/87 1 I/20/87 0 009+0 000b 0.010+0.000b 0.013~0 00qb 11/20/87 - 12/01/87 12/01/87

- 12/15/87 12/08/87'2/08/87 12/15/87 - 12/22/87 12/22/87 - 12/29/87

+Less than lower limit of detection (0.007 pCi/m )

++Invalid sample aSample not collected bVerified by tYi analysis

8.3 Thermoluminescent Dosimetr Thermoluminescent dosimeters were placed in fifty locations ranging from one to forty-five miles from the Palo Verde Nuclear Generating Station. Beginning in 1980 the Panasonic Model 812 Dosimeter replaced all other TLD's in use. The 812 is a multi-element dosimeter combining 2 elements of Lithium Borate and 2 Calcium Sulfate elements.

Tables XX to XXIII present the results of the Quarterly exposures for 1987.

Quarterly data obtained from TLD's are graphically presented in Figures 16 to 18.

Differences in individual station mean values represent statistical variation more so than actual fluctuations in the background radiation around the Palo Verde Nuclear Generating Station and tend to vary about an approximate mean of 20 mRem/quarter. Operational data for 1987 compare very closely with pre-operational data.

Figure 20 illustrates the mean TLD activity from 1981 through 1987. These values were obtained by averaging all TLD's in the field, during the quarter. (The control TLD was not included).

TABLE XX UARTERLY THERMOLUMINESCENT DOSIMETR Y 12/31/86 - 03/31/87 Total Map Exposure Location Collection Location (mrem)

E 30, APS Western Division Offices 21.7 ENE 20 Scott-Libby School 22.0 E 25, Liberty School 19.7 E 20, APS Buckeye Offices 22.8 5 ESE 15, Palo Verde 19.5 6 SSE 35, APS Gila Bend Sub-station 26.9 7 SE 8, Arlington School 26.0 I

8 SSE 5, Gladden Residence 23.8 9 S5, SPRR (West of Gladden) =

29.7 10 SE 5, Corner of 355th Ave. and Elliot Rd.

11 ESE 5, Corner of 339th Ave. and Dobbins Rd. 29.9 12 Corner of 339th Ave., and B-S Rd.

'5, 13 N 1, N Site Boundary 25.2 NNE 2, NNE Site Boundary 25.1 NE 2, Site Boundary 21.9 16 ENE 2, ENE Site Boundary 22.0

'7 E 2, E Site Boundary 25.5 18 ESE 2, ESE Site Boundary 20.0 19 SE 2, SE Site Boundary 25.9 20 SSE 2, SSE Site Boundary 20.0 21 S 3, S Site Boundary 258 22 SSW 3, SSW Site Boundary 25.0 23 W 5, 3.M.M. Parkway 4 Ward 23.2 20 SW 5, Ward Rd. near Desert Farms 22.0 25 WSW 5, Ward Rd. at Cattleguard 23.2 26 SSW 0.5, Shephard farm 27 2

+Missing TLD TABLE XX (Cont.)

UARTERLY THERMOLUMINESCENT DOSIMETRY

.12/31/86 03/31/87 Total Map Exposure Location Collection Location (mrem) 27 SW 2, SW Site Boundary 27.0 28 WSW I, WSW Site Boundary 26.8 29 W I, W Site Boundary 25.3 30 WNW I, WNW Site Boundary 26.8 31 NW 2, NW Site Boundary 23.6 32 NNW I, NNW Site Boundary 26.5 33 NW 5, Yuma Rd., Yi mile W of Belmont Rd. 28.5 30 NNW 5, Corner of Belmont Rd. and Van Buren Rd. 29.1 35 NNW 9, Tonopah, Palo Verde Inn Fire Station 30.6

" 38 N 5, Corner of Wintersburg Rd. and Van Buren Rd.

NNE 5, Corner of 363rd Ave. and Van Buren Rd.

NE 5, Corner of 355th Ave. and Yuma Rd.

25.0

'23.7 26.9 39 ENE 5, 303rd Ave., Yi mile S of L. Buckeye 20.5 00 N 3, Trailer Park at Wintersburg WNW 20, Harquahala Valley School 26.7 N 8, Ruth Fisher School 25.6 N 05, Vulture Mine Rd. School,*Wickenburg 27.8 ENE 35, APS El Mirage Office, Sun City 21.2 05 ENE 20, REMP Lab, Buckeye, Arizona 7.5 06 Litchfield Park School 22.0 Littleton School, Cashion 27.0 08 Perr yville 23.5 09 Hopeville 23.0 50 Olinski Rd., 5 mile, WNW Sector 20.0

<<Missing TLD TABLE XXI UARTERLY THERMOLUMINESCENT DOSIMETR Y SECOND UARTER 03/31/87 - 06/30/37 Total Map Exposure Location Collection Location (mrem)

I E 30, APS Western Division Offices 21.5 2 ENE 20 Scott-Libby School 21.5 E 25, Liberty School 20.0 E 20, APS Buckeye Offices 23.5 ESE 15, Palo Verde 19.5 SSE 35, APS Gila Bend Sub-station 27.0 SE 3, Arlington School 26.5 SSE 5, Gladden Residence 23.0 S5, SPRR (West of Gladden) 29.5 10 SE 5, Corner of 355th Ave. and Elliot Rd. 23.5 11 ESE 5, Corner of 339th Ave. and Dobbins Rd.

12 E5, Corner of 339th Ave., and B-S Rd. 20.0 13 N I, N Site Boundary 25.5 v

IO NNE 2, NNE Site Boundary 25.0 15 NE 2, Site Boundary 20.0 16 ENE 2, ENE Site Boundary 23.0 17 E 2, E Site Boundary 25.0 13 ESE 2, ESE Site Boundary 23.0 19 SE 2, SE Site Boundary 25.0 20 SSE 2, SSE Site Boundary 20.0 21 S 3, S Site Boundary 25.5 22 SSW 3, SSW Site Boundary 26 5 23 W 5, J.M.M. Parkway 4 Ward 22.5 20 SW 5, Ward Rd. near Desert Farms 22.0 25 WSW 5, Ward Rd. at Cattleguard 20.0 26 SSW 0.5, Shephard farm 26.0 TABLE XXI (Cont.)

UARTERL Y T HER MOLUMINESCENT DOSIMETR Y SECOND UARTER 03/31/87 06/30/87 Total Map Exposure Location Collection Location (mrem) 27 SW 2, SW Site Boundary 27.0 WSW 1, WSW Site Boundary 26.0

'29 W 1, W Site Boundary 20.5 30 WNW 1, WNW Site Boundary 26.0 31 NW 2, NW Site Boundary 23.5 32 NNW 1, NNW Site Boundary 26.0 33 NW 5, Yuma Rd., Yi mile W of Belmont Rd. 28.5 30 NNW 5, Corner of Belmont Rd. and Van Buren Rd. 27.5 35 NNW 9, Tonopah, Palo Verde Inn Fire Station 30.0 N 5, Corner of Wintersburg Rd. and Van Buren Rd. 20.5 NNE 5, Corner of 363rd Ave. and Van Buren Rd. 20.5 38 NE 5, Corner of 355th Ave. and Yuma Rd. 27.5 39 ENE 5, 303rd Ave., Yi mile S of L. Buckeye 20.0 00 N 3, Trailer Park at Wintersburg 25.5 Ol WNW 20, Harquahala Valley School 27.5 02 N 8, Ruth Fisher School 25.5 03 N 05, Vulture Mine Rd. School, Wickenburg 27.0 ENE 35, APS El Mirage Office, Sun City 22.0 05 ENE 20, REMP Lab, Buckeye, Arizona 8.0 06 Litchfield Park School 20.5 07 Littleton School, Cashion 28.5 Perr yville 23.0 09 Hopevi lie 22.0 50 Olinski Rd., 5 mile, WNW Sector 19.5 TABLE XXII UARTERLY.THERMOLUMINESCENTDOSIMETRY THIRD UARTER 06/30/87 - 09/30/87 0'ap Total Exposure Location Collection Location (mrem)

E 30, APS Western Division Offices 19.5 ENE 20 Scott-Libby School 20.0 E 25, Liberty School 18.5 E 20, APS Buckeye Offices 22.0 5 ESE 15, Palo Verde 17.5 6 SSE 35, APS Gila Bend Sub-station 25.0 7 SE 8, Arlington School 20.0 8 SSE 5, Gladden Residence 21.5 9 S5, SPRR (West of Gladden) 26.5 10 SE 5, Corner of 355th Ave. and Elliot Rd. 22.5 ll ESE 5, Corner of 339th Ave. and Dobbins Rd.

12 E5, Corner of 339th Ave., and B-S Rd. 22.5 13 N 1, N Site Boundary 23.5 10 NNE 2, NNE Site Boundary 23.5 15 NE 2, Site Boundary . 21.5 16 ENE 2, ENE Site Boundary 20.5 17 E 2, E Site Boundary 25.0 18 ESE 2, ESE Site Boundary 22.0 19 SE 2, SE Site Boundary- 23.5 20 SSE 2, SSE Site Boundary 22.5 21 S 3, S Site Boundary 23.5 22 SSW 3, SSW Site Boundary 20.5 23 W 5, 3.M.M. Parkway dc Ward 21.5 20 SW 5, Ward Rd. near Desert Farms 21.0 25 WSW 5, Ward Rd. at Cattleguard 21.0 26 SSW 0.5, Shephard farm 20.5

TABLE XXII (Cont.)

UARTERLY THERMOLUMINESCENT DOSIMETRY THIRD UARTER 06/30/87 - 09/30/87 Total Map Exposure Location Collection Location (mrem) 27 SW 2, SW Site Boundary 26.5 28 WSW 1, WSW Site Boundary 20.5 29 W 1, W Site Boundary 20.0 30 WNW 1, WNW Site Boundary 20.5 31 NW 2, NW Site Boundary 21.5

32. NNW 1, NNW Site Boundary 23.0 33 NW 5, Yuma Rd., Yi mile W of Belmont Rd. 27.0 30 NNW 5, Corner of Belmont Rd. and Van Buren Rd. 25.5 NNW 9, Tonopah, Palo Verde lnn Fire Station 28.0 N 5, Corner of Wintersburg Rd. and Van Buren Rd. 23.5 NNE 5, Corner of 363rd Ave. and Van Buren Rd. 21.5 NE 5, Corner of 355th Ave. and Yuma Rd. 25.5 39 ENE 5, 303rd Ave., Yi mile S of L. Buckeye 22.5 00 N 3, Trailer Park at Wintersburg 22.5

,. Ol WNW 20, Harquahala Valley School 25.5 02 N 8, Ruth Fisher School 23.0 03 N 05, Vulture Mine Rd. School, Wickenburg 25.0 ENE 35, APS El Mirage Office, Sun City 20.5 05 ENE 20, REMP Lab, Buckeye, Arizona 7.0 06 Litchfield Park School 21.0 07 Littleton School, Cashion 25.5 08 Perryville 22.0 09 Hopeville 50 Olinski Rd., 5 mile, WNW Sector 19.0

+Missing TLD TABLE XXIH UARTERLY THERMOLUMINESCENT DOSIMETRY 09/30/87

- 12/31/87 0

Total Map Exposure Location Collection Location (m rem)

E 30, APS Western Division Offices 19.5 ENE 20 Scott-Libby School 20.5 E 25, Liberty School 19.0 E 20, APS Buckeye Offices 21.5 ESE 15, Palo Verde 18.0 SSE 35, APS Gila Bend Sub-station 25.5 SE 8, Arlington School 20.0 8 SSE 5, 'Gladden Residence 21.5 9 S5, SPRR (West of Gladden) 27.0 10 SE 5, Corner of 355th Ave. and Elliot Rd. 22.0 ESE 5, Corner of 339th Ave. and Dobbins Rd.

12 E5, Corner of 339th Ave., and B-S Rd. 22.5 13 N 1, N Site Boundary 23.5 NNE 2, NNE Site Boundary 23.0 15'6 NE 2, Site Boundary 22.5 ENE 2, ENE Site Boundary 20.5 17 E 2, E Site Boundary 23.0 18 ESE 2, ESE Site Boundary 21.0 19 SE 2, SE Site Boundary 23.0 20 SSE 2, SSE Site Boundary 21.5 21 S 3, S Site Boundary 23.0 22 SSW 3, SSW Site Boundary 20.0 23 W 5, 3.M.M. Parkway R Ward 21.0 SW 5, Ward Rd. near Desert Farms 20.5 25 WSW 5, Ward Rd. at Cattleguard 22.0 26 SSW 0.5, Shephard farm 20.0 TABLE XXIII(Cont.)

UARTERLY THERMOLUMINESCENT DOSIMETR Y FOURTH UARTER 09/30/87 12/31/87 Total Map Exposure Location Collection Location (mrem) 27 SW 2, SW Site Boundary 25.0

- ~,28 WSW 1, WSW Site Boundary 23.5 29 W 1, W Site Boundary 23.0 30 WNW 1, WNW Site Boundary 20.5 31 NW 2, NW Site Boundary 21.5 32 NNW 1, NNW Site Boundary 23.5 33 NW 5, Yuma Rd., Yi mile W of Belmont Rd.

30 NNW 5, Corner of Belmont Rd. and Van Buren Rd. 20.5 35 NNW 9, Tonopah, Palo Verde Inn Fire Station 26.5

" 38 N 5, Corner of Wintersburg Rd. and Van Buren Rd.

NNE 5, Corner of 363rd Ave. and Van Buren Rd.

NE 5, Corner of 355th Ave. and Yuma Rd.

22.5 22.5 26.0 39 ENE 5, 303rd Ave., Y~ mile S of L. Buckeye 22.5 00 N 3, Trailer Park at Wintersburg 23.0 01 WNW 20, Harquahala Valley School 25.0 02 N 8, Ruth Fisher School 20.0 03 N 05, Vulture Mine Rd. School, Wickenburg 25.0 ENE 35, APS El Mirage Office, Sun City 20.0 05 ENE 20, REMP Lab, Buckeye, Arizona 6.5 06 Litchfield Park School 21.0 07 Littleton School, Cashion 27.0 Perryville 23.5 09 Hope ville 20.0 50 Olinski Rd., 5 mile, WNW Sector 18.0

+Missing TLD f

Figure I6 QUARTERLY THERMOLUMINESCENT DOSIMETRY FIRST QUARTER 1987 40 p

30 a 20 25 $0 45 T

Figure 17 QUARTERLY THERMOLUMINESGENT DOSIMETRY SECOND QUARTER 1987 50 Lad Pn 3P LJJ a 20

'0. 25 $0 40 45 STATION

Figure 18 QUARTERLY THERMOLUMINESCENT DOSIMETRY THIRD QUARTER 198?

E 50 IJJ o 20 LLI 15 20 25 45

Figure 19 QUARTERLY THERMOLUMINESGENT DOSIMETRY FOURTH QUARTER 1987 50 40 Ld p

30 LLI

~ 20 LLI 10 15 20 25 30 35 STATION

Figure 20 MEAN QUARTERLY THERMOLUMINESGENT DOSIMETRY 1981-1987 preoperational operational I

~ 25

~ ro OC

)5 81 82 8$ 84 85 86 YC

L4 ~Ve etation Human vegetation samples were collected from four local farms since no commercial companies are located in the area. The leafy vegetation samples collected during 1987 included: mustard greens and lettuce. The citrus samples included grapefruits, oranges, tangerines and lemons.

Table XXIV presents Iodine-131,data for the human vegetation samples collected during 1987. No observable activity was detected in any of the samples. The results of the Gamma Spectralanalyses for all human vegetation samples is presented in Tables XXV and XXVI. No man-made Gamma emitting nuclides were detected in any of the samples.

Animal vegetation samples were collected from six local farms participating in the milk survey. Types of vegetation collected included: grain, hay, haylage and silage. These samples were analyzed for Strontium-$ 9, Strontium-90 and Gamma emitting nuclides.

Table XXVIIindicates no Strontium-89/90 was detected in 1987. One hay sample collected on 02/13/87 from the Skousen Dairy indicated Cesium-137 activity of 0.199+0.038 pCi/g. No other Gamma emitting nuclides were detected (Table XXVIII).

TABLE XXIV HUMAN VEGETATION 1987 Date Iodine-131 Collection Location Collected Ci/ m (Wet)

Leafy:

Cambron Garden Lettuce 01/15/87 < 0.02 Mustard Greens oi/15/s7 < O.O2 Citrus:

Adams Grapefruit 01/15/87 < 0.02 Lemons 01/15/87 < 0.02 Oranges oi/>>/s7 < 0.02 Lemons 02/12/87 < 0.02 Oranges 02/12/87 < 0.02 Grapefruit 02/12/87 < 0.02 Grapefruit 03/12/87 < 0.02 Lemons 03/12/87 < 0.02 Tangerines 03/12/87 < 0.02 Grapefruit 00/16/87 < 0.02 Oranges oe/16/87 < 0.02 Coole Farms Oranges Oi/15/87 < 0.02 Tangerines 01/15/87 < 0.02 Grapefruit 01/15/87 < 0.02 Grapefruit 02/12/87 < 0.02 Grapefruit 03/12/87 < 0.02 Oranges 03/12/87 < 0.02 Grapefruit 00/16/87 < 0.02 TABLE XXIV (Cont.)

HUMAN VEGETATION 1987 Date Iodine-131 Collection Location Collected Ci/ m (Wet)

Citrus (Cont.):

Butler Grapefruit 01/15/87 < 0.02 Grapefruit 02/13/87 < 0.02 Grapefruit 03/12/87 < 0.02 Grapefruit 00/16/87 < 0.02 Cambron Garden Grapefruit 01/IS/87 < 0.02 Tangerines 01/15/87 < 0.02 Oranges 01/i~/87 < 0.02 Grapefruit 02/12/87 < 0.02 Tangerines 02/12/87 < 0.02 Oranges 02/12/87 < 0.02 Grapefruit 03/12/87 < 0.02 Tangerines 03/12/87 < 0.02 Oranges 03/12/87 < 0.02 Grapefruit 00/16/87 < 0.02 Tangerines 00/16/87 < 0.02 Oranges 0O/16/87 < 0.02 TABLE XXV VEGETATION (Leaf )

GAMMA SPECTROMETRY 1987 i/ m (wet)

Date Ba-100 Co-60 Co-58 Mn-50 Ru,Rh-106 Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-100 Fe-59 Collection Location Collected 0.073 0.063 0.017>> 0.021>> 0.103>> 0.060>> 0.066>> 0.056>> 0.029>> 0.121>> 0.021>>

Cambron Garden Lettuce oi/i5/87 Mustard Greens 01/15/87 "Lower limit of detection I-

>><<Less than lower limit of detection I

TABLE XXVI VEGETATION Citrus)

GAMMASPECTROMETRY 1987 i/ m (wet)

Date Ba-140 Co-60 Co-58 Mn-54 Ru,Rh-106 2n-65 Zr,Nb-95 Cs'-137 Cs-134 Ce-144 Fe-59 Collection Location Collected 0.075>> 0.063>> 0.017>> 0.021>> 0.143>> 0.060>> 0.066>> 0.056>> 0.029>> 0.121" 0.021>>

Adams Grapefruit oi/is/s 7 Lemons 01/15/87 >>>>

Oranges oi/i5/87 Lemons 02/12/87 Oranges o2/i2/sj Grapefruit o2/i2/87 Grapefruit 03/12/87 Lemons 03/12/87 Tangerines o3/i2/8 7 Grapefruit o4/i6/sj Oranges o4/i6/sj

~Coole Oranges ol/i5/sj Tangerines oi/is/sj Grapefruit 01/15/87 Grapefruit 02/12/87 Grapefruit 03/12/87 Oranges 03/12/87 Grapefruit o4/i6/sj

'Lower limit of detection

'Less than lower limit of detection

TABLE XXVI(Cont.)

VEGETATION (Citrus)

GAMMASPECTROMETRY 1987 Ci/ m (wet)

Date Ba-140 Co-6Q Co-58 Mn-54 Ru,Rh-106 Zn-65 Zr,Nb-95 Cs-137 Cs-134 Ce-144 Fe-59 Collection Location Collected 0.075" 0.063>> 0.017>> 0.021>> 0.143>> 0.060>> 0.066>> 0.056" 0.029>> 0.121>> 0.021>>

Butler Grapefruit 0 II15I87 kk Crapefruit 02/13/87 Grapefruit 03/12/87 Grapefruit o4/i6/s7 I

I Cambron Carden Oranges 01/15/87 Tangerines oi/is/s7 Grapefruit OI/15/87 Crapefruit 02/12/87 Tangerines 02/12/87 Oranges 02/12/87 Grapefruit 03/12/87 Tangerines 03/12/87 Oranges 03/12/87 Grapefruit 04/16/87 Tangerines o4/i6/s7 kk Oranges 04/16/87

>>Lower limit of detection

~ ~ Less than lower limit of detection

TABLE XXVII ANIMALVEGETATION 1987 Collection Date Strontium-89 Strontium-90 Location T e Collected (o.i ci/)+ (o.os ci/ )+

Kerr Grain 01/16/87 Hay 01/16/87 Grain 02/13/87 Hay 02/13/87 Grain 03/13/87 Hay 03/13/87 Grain 00/17/87 Hay 00/17/87 Grain os/15/87 Hay os/15/87 Butler Grain 01/16/87 Haylage 01/16/87 Hay Oi/16/87 Grain 02/13/87 Haylage 02/13/87 Hay 02/13/87 Grain 03/13/87 Haylage 03/13/87 Hay 03/13/87 Grain 00/17/87 Haylage 00/17/87 Hay 00/17/87 Grain 05/15/87 Haylage 05/15/87 Hay os/ls/87

+Lower limit of detection

++Less than lower limit of detection TABLE XXVII(Cont.)

ANIMALVEGETATION 1987 e

Collection Date Strontium-89 Strontium-90 Location Collected (o.i ci/)>> (0.05 Ci/ )>>

Lueck Grain 01/16/87 Hay 01/16/87 Haylage 01/16/87 Grain 02/13/87 Haylage 02/13/87 Beet Pulp 02/13/87 Hominy Corn 02/13/87 Grain 03/13/87 Hay 03/13/87 Haylage 03/13/87 Grain 00/17/87 Hay Oe/17/87 Hayiage oo/17/87 Grain 05/is/87 Hay 05/la/87.

Hayiage 05/15/87 Hamstra II2 Grain Oi/i6/87 Hay 01/16/87 Grain 02/13/87 Hay 02/13/87 Grain 03/13/87 Hay 03/13/87 Grain 00/17/87 Hay 00/17/87 Grain os/is/87 Hay os/15/87

>>Lower limit of detection

>>>>Less than lower limit of detection TABLE XXVII(Cont.)

ANIMALVEGETATION 1987 Collection Date Strontium-89 Strontium-90 Location Collected (o.i ci/)+ (o.o5 ci/ )

Baisiey Grain 01/16/87 Hay oi/i6/s7 Grain 02/13/87 Hay 02/13/87 Grain 03/13/87 Hay 03/13/87 Grain 00/17/87 Hay 00/17/87 Grain O5/i5/S7 Hay o5/i5/s7 Skousen Hay 01/16/87 Silage oi/16/87 Grain 02/1,3/87 Hay 02/13/87 Silage 02/13/87 Grain 03/13/87 Hay '3/13/87 Silage 03/13/87 Grain 00/17/87 Hay 00/17/87 Silage 00/17/87 Grain o5/i5/s7 Hay 05/15/87 Silage 05/15/87

+Lower limit of detection

++Less than lower limit of detection TABLE XXVIII ANIMALVEGETATION GAMMASFECTROMETRY 1987 Ci/ (wet)

Collection Date Ba-100 Co-60 Co-58 Mn-5O Ru,Rh-1 06 Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-100 Fe-59 Location Collected 0.075>> 0.063>> 0.017>> 0.021>> 0.103>> 0.060>> 0.066>> 0.056>> 0.029>> 0.121>> 0.021>>

Kerr Grain Oi/16/87 Hay 01/16/87 Grain 02/13/87 Hay 02/13/87 Grain 03/13/87 Hay 03/13/87 kk Grain 00/I7/87 Hay oo/17/87 kk Grain 05/15/87 I

Hay os/is/87 I

Butler Grain 01/16/87 Haylage OI/16/87 kk kk Hay oi/i6/87 Grain 02/13/87 Haylage 02/13/87 Hay 02/13/87 Grain 03/13/87 Haylage 03/13/87 Hay 03/13/87 Grain OO/I7/87 Haylage OO/17/87 Hay 00/17/87 Grain os/is/87 Haylage os/ls/87 Hay 05/15/87

<<Lower limit of detection k >>Less than lower limit of detection

TABLE XXVlll(Cont.)

ANIMALVEGETATION GAMMA SPECTROMETRY 1987 Ci/ (wet)

Collection Date Ba-100 Co-60 Co-58 Mn-50 Ru,Rh-1 06 Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-140 Fe-59 Location Collected 0.075>> 0.063>> 0.017>> 0.021>> 0.103>> 0.060>> 0.066>> 0.056>> 0.029" 0.121>> 0.021>>

Lueck Grain oi/i6/s7 Hay oi/i6/87 Haylage oi/i6/s7 Grain 02/13/87 Haylage 02/13/87 Beet Pulp 02/13/87 Hominy Corn 02/13/87 Grain 03/13/87 Hay 03/13/87 Haylage 03/13/87 Grain oo/17/87 Hay 00/I7/87 Haylage oo/I7/87 Grain 05/15/87 Hay 05/15/87 Haylage 05/IS/87 Hamstra S2 Grain 01/16/87 Hay OI/16/87 Grain 02/13/87 Hay 02/13/87 Grain 03/13/87 Hay 03/13/87 Grain 00/I7/87 Hay 00/17/87 Grain os/is/s7 Hay 05/15/87

~ Lower limit of detection

~ ~

Le>> than lower limit of detection

TABLE XXVIII(Cont.)

ANIMALVEGETATION GAMMASPECTROMETRY 1987 i/ (wet)

Collection Date Ba-IOQ Co-60 Co-58 Mn-50 Ru,Rh-106 Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-100 Fe-59 Location Collected 0.075>> 0.063>> 0.017>> 0.021>> 0.143>> Q.060>> 0.066>> 0.056>> 0.029>> 0.121>> 0.021>>

~Baisle Grain Ol/16/87 Hay 01/16/87 Grain 02/13/87 kk Hay 02/13/87 Grain 03/13/87 Hay 03/13/87 Grain oo/17/87 Hay oo/17/87 I

Grain o5/i5/s7 C) Hay 05/15/87 Ql l

Skousen Hay oi/i6/s7 0.199+0.038a kk Silage 01/16/87 Ik Grain 02/13/87 Silage 02/13/87 Hay 02/13/87 Grain 03/13/87 Hay 03/13/87 Silage 03/13/87 Grain 00/17/87 Hay OO/17/87 Silage 00/17/87 Grain 05/15/87 Hay O5/15/S7 Silage 05/15/87

>>Lower limit of detection

~ >>Less than lower limit of detection aVerified by reanalysis

Drinking water samples were taken monthly. AII of the samples were analyzed for Gross Alpha, Gross Beta, Strontium-90, Tritium and for Gamma-emitting nuclides. Results of these analyses are summarized in Tables XXIX and XXX.

Eleven (I I) of the samples showed Gross Alpha activity above the detection limit of 1.0 pCi/1. The range of Gross Alpha activity in drinking water samples collected during 1987 was from less than 1.0 pCi/I to 7.6+0.6 pCi/I (Glover Residence collected 07/10/87).

Gross Beta activity ranged from less than 2.0 pCi/I to a high of 10.0+0.8 pCi/I (McArthur Residence collected 03/12/87).

Strontium-90 was detected in none of the drinking water samples collected during 1987.

Tritium results, for all drinking water samples collected during 1986, were less than 1000 pCi/l. In addition, no Gamma-emitting nuclides of man-made origin were detected in any of the samples.

0 TABLE XXIX DRINKING WATER 1987 Ci/1 Date Gross Alpha Gross Beta Strontium-90 Tritium Collection Location Collected 1.0+ 2.0+ 0 5% 1000+

McArthur Residence Oi/i5/S7a 02/12/87a 03/12/87a 10.0 + 0.8 00/16/87a 05/10/87a 06/18/87a 2.8 + 0.0 07/IO/87b < 6.9 6.6 + 1.3 < 0.68 < IOOO 08/ll/87b O9/i5/S7b 3.7+ 5.0 5.7 + 0.8

< 0.9 7.7 + 1.3 0.39 0.73 <

0 390 10/13/87b < 5.2 5.6+ 1A < 0.38 060 ll/10/87b 6.6+ 3.1 < 5.2 < 0.28 < 1320 12/15/87b < 2.0 8.7+ 1.1 < 0.75

+Lower limit of detection (CEP)

"+Less than lower limit of detection aCEP data bASU data Not determined

-102-

TABLE XXIX (Cont.)

DRINKING WATER 1987 Ci/I Date Gross Alpha Gross Beta Strontium-90 Tritium Collection Location Collected 1.0+ 2.0+ 0.5+ 1000+

Glover Residence 01/15/87 a IA+ 1.0 02/12/87a 03/12/87a 2.0 + 0.5 oe/16/87a 05/10/87a 1.5 + I.I 06/18/87a I.I + 1.0 2.0+ OA 07/10/87b 7.6 + 0.6 2.7 + 0.9 < 0.81 < 1030 08/11/87b 3.3 + 0.0 < 0.7 < 0.36 < 300 09/15/87b 0.0 + 3.7 6.2 + 1.3 < 0.75 < 390 10/13/Sjb 5.8 + 1.6 < 0.31 < 050 ll/10/87b 1.7 + 2.6 < 0.6 < 0.28 < 1300 12/15/87b 5.3 + 1.0 0.67

+Lower limit of detection (CEP)

+~Less than lower limit of detection aCEP data bASU data Not determined

-103-

TABLE XXIX (Cont.)

DRINKING WATER 1987 I

Ci/1 Date Gross Alpha Gross Beta Strontium-90 Tritium Collection Location Collected 1.0+ 2.0+ 0 5+ 1000%

Gavette Residence Oi/i5/S7a 02/12/87a 2.0 + 0.5 03/12/87a 3.0 + 0.5 00/16/87a 05/ie/87a 06/18/87a 2.0 + 0.5 07/10/87b 0.0 + 1.3 < 0.81 < 103 08/11/87b < 1.3 < 0.8 < 0.36 09/15/87b 0.0 + 5.2 0.8 + 1.0 0.75 390 io/i3/s7b < 5.5 6.8 + 1.5 0.31 < 060 ii/io/s7b < 2.3 < 5.0 0.28 < 1310 12/15/87b < 2.5 7.3+ 1.3 0.80

+Lower limit of detection (CEP)

+~Less than lower limit of detection aCEP data bASU data Not determined

-104-

TABLE XXX DRINKING WATER GAMMA SPECTROMETRY 1987 Date Ba-140 Co-60 Co-58 Mn-54 Ru,Rh-106 Zn-65 Zr,Nb-95 Cs-137 Cs-134 Ce-144 Fe-59 1-131 Collection Location Collected 4>> 5>> 3>> 2>> IO>> 16>> IO>> 2>> 10>> I 8>> 3>> I>>

McArthur Residence Ol/15/87a 02/12/87a 03/12/87a O4/i6/87a 05/14/87a O6/iS/87a O7/i4/87b < 17 <2 4 < 2.6 < 2 4 < 5.5 < 4.6/< 2.9 < 2.7 < 2.4 < 20 < 6.2 < 9.1 os/11/s7b d d d d d O9/i5/S7b < II < 2.5 < 2.3 < 2.2 <20 < 5.3 < 4.0/< 2.6 < 2.5 < 2.1 <19 < 5.1 < 4,4 10/13/87b < II < 2.7 < 2.5 < 2.2 <20 < 4.9 < 3.9/< 2.5 < 2.4 < 2.2 <18 < 5.1 < 3.5 ii/io/s7b <13 <26 <24 < 2.4 <23 < 5.0 < 4.8/< 2.7 < 2.4 < 2.5 <20 < 4.8 < 4.2 12/i5/87b < 8.7 < 2.6 < 2.6 < 2.5 <22 < 4.6 < 4.0/< 2.8 < 2.6 < 2.3 <20 < 4.9 < 3.0

>>Lower limit of detection (CEP)

>>>>Less than lower limit of detection aCEP data bASU data cNot Determined dNo Sample Collected

TABLE XXX (Cont.)

DRINKING WATER GAMMA SPECTROMETRY 1987 Date Ba-100 Co-60 Co-58 Mn-50 Ru,Rh-106 Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-IN Fe-59 1-131 Collection Location Collected Qk 5>> 3>> IO>> 16>> 10>> 2>> 10>> 18>> 3>> I>>

Glover Residence Ol/15/87a 02/12/87a o3/i2/s>>

00/16/87a 05/IO/87a o6/is/s>>

07/io/87b <16 < 2.5 < 2.7 < 2.6 < 5.9 < 0.2/< 3.1 < 2.5 < 2.1 < 20 < 6.7 <8.0 08/II/87b <10 < 2.8 < 2.2 < 2.3 < 0.8 < 1.2/< 2.5 < 2.5 < 2.3 <19 < 0.9 < 3.8 O9/i5/S7b <11 < 2A < 2.6 < 2.3 <22 < 0.9 < 0.2/< 2.5 < 2.5 < 2.2 <19 < 51 <OA IO/i3/S7b <13 < 2.6 < 2.3 < 2.5 <22 < 5.1 < O.l /< 2.0 < 2.5 < 2A < 21 < 5.1 <0.9 ll/10/87b < 8.2 < 2.0 < 1.9 < 1.9 <19 < 0.2 < 3.6/< 2.1 < 2.1 < 2.0 <20 <3.9 < 2.7 I2/15/87b < 10 < 2.5 < 2.3 < 2.5 <23 < 5.6 < 0.6/< 2.0 < 2.8 < 2.6 <20 <5.2 <3.5

<<Lower limit of detection (CEP)

>>>>Less than lower limit of detection aCEP data bASU data cNot Determined

TABLE XXX (Cont.)

DRINKING WATER GAMMA SPECTROMETRY 1987 Date Ba-100 Co-60 Co-58 Mn-50 Ru,Rh-1 06 Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-100 Fe-59 1-131 Collection Location Collected 0" 5>> 3>> 2<< lo>> 16>> 10<< - 2>> IQ<< 18" 3>> I>>

Gavotte Residence Oi/iS/87a O2/i2/S7a 03/12/87a O0/i6/S7a I

05/10/87a 0 O6/iS/87a I

O7/i0/S7b <17 < 2.5 < 2.6 < 20 < 0.8 <0.7/< 2.8 < 2.2 < 2.1 <19 < 5.1 < 9.1 os/il/s7b < 10- <2.7 < 2.0 < 2.2 < 0.9 < 0.5/< 2.0 < 2.7 <20 . <18 < 5.1 <30 o9/is/87b < 2.3 < 2.3 < 2.1 < 20 < 0.0 <0.2/< 2.6 <20 < 2.2 <19 < 0.8 < 5.0 10/13/87b < II < 2.6 < 2.0 < 2.6 < 21 < 6.7 < 0.8/< 3.0 < 2.5 < 2.0 <20 <5.0 < 3.5 11/io/s7b <11 <22 < 2.2 < 1.8 < 2Q < 4.0 < 3.6/< 2.0 < 2.3 < 2.1 < 21 < 0.0 < 0.2 iz/is/s7b < 7.8 < 1.9 < I.s "< 1.9 < 17 < 0.5 < 3.1/< 2.0 < 2.1 < 1.8 < 19 < 0.Q < 2.9

<<Lower limit of detection (CEP)

<<<<Less than lower limit of detection aCEP data

. bASU data cNot Determined

8.6 Groundwater Quarterly groundwater samples were collected from the on-site wells (W~

27ddc and Well 30abb). All groundwater samples were analyzed for Gross Alpha, Gross Beta, Strontium-90, Tritium and for Gamma-emitting nuclides. Results obtained from the analysis of the samples is presented in Tables XXXI and XXXII.

Both groundwater sample collected on 11/10/87 exhibited Gross Alpha activity.

Gross Beta activity was detected in two of the groundwater samples collected during 1987. Well 27ddc, 0.6+5.7 pCi/1 (08/11/87) and Well 30 abb, 3.0+7.7 pCi/I (08/11/87).

No groundwater sample collected during 1987 had detectable levels of Tritium Strontium-90. In addition, no isotopes of interest were detected by Gamma Spectralanalysis of the groundwater samples.

-108-

TABLE XXXI GROUND%'ATER 1987 Ci/I Date Gross Alpha Gross Beta Strontium-90 Tritium Collection Location Collected 1.0+ 2.0+ 0 5+ 1000%

27ddc 02/12/87a 05/li/87a 08/11/87b 0.6 + 5.7 < OA9 300 11/1O/S7b 0.2+ 3.1 < 5.3 < 0.31 < 1320 30abb 02/12/87a 05/ie/87a 08/II/87b 3.0 + 7.7 <OA6 < 300 11/1O/S7b O.l + 0.5 <5.5 < 0.32 < 1320

+Lower limit of detection (CEP)

<<+Less than lower limit of detection (CEP) aCEP data bASU data cNot determined

-109-

TABLE XXXII GROUNDWATER GAMMASPECTROMETRY 1987 Date Ba-100 Co-60 Co-58 Mn-50 Ru,Rh-l 06 . Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-100 Fe-59 1-131 Collection Location Collected 0>> 5>> 3>> 2>> 10>> 16" lo>> 2>> 10>> 18>> 3>> I>>

27ddc O2/12/S?a osliuls?a os/ii/s?b < 10 < 2.5 < 2.3 < 2.3 < 0.1 < 0.1/<2.7 < 2.3 < 2.3 < 19 < 5.5 <4.1 ii/io/s?b < 13 < 2.8 < 3.0 < 2.9 < 25 < 5.9 < 0.9/< 3.0 < 2.9 < 2.2 < 21 < 6.1 < 0.9 30abb O2/i2/S?a 05/10/8?a I

os/Ii/s?b < 2.2 < 2.3 < 2.0 < 5.1 < 0.0/< 2.0 < 2.7 < 2.2 < 19 < 5.5 < 0.0 ii/io/s?b < 12 <2 0 < 2.3 < 2.3 < 21 < 5.2 < 0.2/< 2.5 <20 < 2.2 < 22 < 5.0 < 0.8

>>Lower limit of detection (CEP)

>>>>Less than lower limit of detection aCEP data bASU data cNot Determined

8.7 Surface Water Surface water samples were introduced into the monitoring program during the third quarter of 1982. Samples from PVNGS Reservoir and PVNGS Evaporation Pond were collected weekly throughout 1987.

These samples were analyzed for Iodine-131, Gross Alpha, Gross Beta, Strontium-89, Strontium-90, Tritium and Gamma-emitting nuclides. Results of these analyses are presented in Tables XXXIIIthrough XXXYI.

Iodine-131 was detected in fifty-six of the 1987 surface water samples collected.

Activity ranged from less than 0.5 pCi/1 to a high of 12.5+0.7 pCi/1 on 12/22/87 at PVNGS Reservoir.

PVNGS Reservoir samples demonstrated Gross Beta activities ranging from N

3.0+0.5 pCi/1 to 23+1 pCi/I (Ol/15/87). The samples from the PVNGS Evaporation Pond showed Gross Beta activities ranging from 8.0+0.6 pCi/1 to 270+10 pCi/I (09/22/87).

As can be seen from Table XXXIII,"twenty (20) surface water samples exhibited observable activity for Strontium-90 above the detection limit of 0.5 pCi/I and one sample indicated Strontium-89 activity above the lower limit of detection (i.o pCi/i).

Gamma Spectralanalysis of the samples showed no detectable activity for Gamma emitting nuclides of interest except Iodine-131 (Table XXXVI).

-111-

The surface water samples were analyzed for Tritium activity. The PVNC~

Reservoir samples indicated no Tritium activity above the lower limit detection (1000 pCi/I) for 1987. The PVNGS Pond samples indicated Tritium activity throughout most of 1987.

-112-

E XXXIII CE WATER 1987 PVNCS RESERVOIR Radiochemical Anal sis ( Ci/0 Collection Date Gross Al ha Gross Beta Iodine-131 Tritium Strontium-89 Strontium-90 Oi/OS/S7a < 0.5 < 1000 Oi/15/S7a < 0.5 < 1000 oi/i5/s7b 26+ 5 23+ 1 2.2 + 0.1 < 560 < 0.39 < 0.35 01/22/87a < 0.5 ,

< 1000 Ol/29/87a < Q.5 < 1000 O2/O5/S7a <o.5 < 1000 02/12/87a < Q.5 02/12/87b < 5.7 16+ 2 < 1.8 < 560 < 0.20 < 0.18 02/19/87a <Q,5 02/26/87a <o.5 O3/O5/S7a <0.5-03/12/87a <0.5, 03/12/87b < 3.1 15+ 2 0.96 + 0.05 <<50 < 0.39 < 0.27 03/19/87a < Q.5 03/26/87a <0.5 00/02/87a < p.5 00/09/87a < p.5 OO/16/87a <0.5 00/16/87b 3.9 + 9.1 20+ 2 0.1 + 0.2 < 570 < 0.00 < 0.35 00/23/87a <0.5 00/30/87a <0.5 O5/O7/S7a 6.1 + 1.0 05/IO/87a <0.5 O5/ie/87b < 0.2 19+ 2 8.0 + 0.5 <570 < 0.08 < 0.36

+Not Determined aCEP data bASU data

TABLE XXXIII(Cont.)

SURFACE WATER 1987 PVNGS RESERVOIR Radiochemical Anal sis ( Ci/I)

Collection .

Date Gross Al ha Gross Beta Iodine-131 Tritium Strontium-89 Strontium-90 O5/21/S7a < 0.5 05/28/87a < 0.5 O6/OO/87a 1.8 + 1.1

.O6/li/S7a 2.3 + 1.7 06/18/87a < 0.5 06/18/87b <5.9 18+ 2 3.1 + 0.3 < 520 < 0.07 0.35 + 0.02 O6/25/S7a 3.0 + 1.6 07/01/87b <0.8 16+ 3 5.9 + 0.5 < 0.23 < 0.23

. 07/07/87b <3.8 17+ 3 0.5 + 0.0 < 0.27 < 0.27 07/10/87b <3A 18+ 3 10.6+ 0 5 <800 1.5 < 0.58 07/21/87b <10 18+ 2 6.6 + 0.3 < 3.1 < IA 07/28/87b <10 20+ 3 6.0 + 0.3 < 1.3 < 0.71 os/oc/87b < 7.8 19+ 2 5.0 + 0.3 I:2 < 0.77 os/ii/s7b 0.2+ 10 12+ 2 2.5 + 0.1 <300 < 0.87 < 0.65 08/18/87b 3.3 + 1.3 15+ 2 11.0+ 1.0 < 0.75 < 0.71 os/25/s7b < 8.8 18+ 2 25.0 + 3.0 < 0.70 < 0.07 o9/oi/s7b < 9.2 18+ 2 9.5+ 1.0 I.O < 0.63 09/08/87b < 8.6 10+ 2 0.0'+ 1.3 < 0.93 < 0.66 o9/15/s7b < 9.2 19+ 2 6.0 + 0.6 <690 < 0.89 < 0.79 09/22/87 < 0.2 16+ 2 5.0+ OA < 0.5o <OAO 09/29/87b < 0.2 18+ 2 5.2 + 0.0 < 0.50 < 0.08 10/06/87b < 7.2 17+ 2 3.8 + 0.5 < 0.00 <0.30 io/i3/s7b < 8.5 16+ 2 3.0 + 0.2 <690 < 0.00 < 0.35 10/20/87b <8.1 19+ 2 3.5 + 0.3 < 0.00 <0.38 10/27/87b < 8.8 18+ 2 1.9 + 0.2 < 0.55 <0.03

+Not Determined aCEP ta bA a

TAB XXXIII(Cont.)

S CE WATER 1987 PVNGS RESERVOIR Radiochemical Anal sis ( Ci/I)

, Collection Date Gross Al ha Gross Beta Iodine-131 Tritium Strontium-89 Strontium-90 11/03/87b < 7+5 19+ 2 < 0.55 < 0.51 < 0.07 11/10/87b < 8.1 18+ 2 8.7 + 0.6 <1300 < 0.50 < 0.38 11/17/87b II- 20+ 2 5.0 + 0.3 < 0.06 < 0.39 11/20/87b < 10 20+ 2 2.5 + 0.2 0.52 + 0.05 < 0.37 12/01/87b < 5.8 20+ 2 1.8 + 0.1 < 0.00 < 0.39 12/08/87b < 5.6 19+ 2 0.7 + 0.0 < 0.30 < 0.25 12/15/87b < 2.9 18+ 2 0.8 + 0.3 < 0.37 < 0.31 12/22/87b < 2.9. 15+ 2 12.5 + 0.7 < 790 < 0.92 < 0.83 12/29/87b < 3.8 21+ 2 7.5 + 0.6 < 0.81 < 0.83

+Not Determined aCEP data bASU data

TABLE XXXIV SURFACE WATER 1987 PVNGS EVAPORATION POND Radiochemical Anal sis ( Ci/I)

Collection Date Gross Al ha Gross Beta Iodine-131 Tritium Strontium-89 Strontium-90 Ol/OS/S7a < 0.5 3309 + 920 Oi/i5/S7a < 0.5 2059 + 1217 oi/i5/s7b 52+ 07 120 + 3 < 0.52 1570 + 220 < 0.39 0.92 + 0.06 01/22/87a < 0.5 3791 + 1297 01/29/87a < 0.5 3091 + 1270 O2/O5/87a < 0.5 3333 + 1313 02/12/87a < 0.5 02/12/87b < 36 130 + 6 < 2.0 1610 + 230 0.20 0.38 + 0.02 02/19/87a p.5 02/26/87a p.5 O3/O5/S7a p.5 03/12/87a Q.5 03/12/87b < 18 IIO+ 10 0.$ 5 2710 + 380 OA2 0.32 03/19/87a p,5 03/26/87a 0.5 00/02/87a < 0.5 OO/09/87a < 0.5 00/16/87a 2.8 + 1.7 00/I6/87b < 28 160+ 7 0.58 + 0.03 1800 + 290 < 0.03 0.51 + 0.03 00/23/87a ~ < 0.5 OO/30/87a < 0.5 OS/O7/S7a Q.5 05/IO/87a 0.5 05/IO/87b <52 170+ 7 0.90 + 0.06 1080 + 210 0.55 0.51 + 0.00

+Not Determined aCEP data bAa

TABL XXXIV(Cont.)

S CE WATER 1987 PVNGS EVAPORATION POND Radiochemical Anal sis ( Ci/I)

Collection Date Gross Al ha Gross Beta Iodine-131 Tritium Strontium-89 Strontium-90 O5/2i/S?a < 0.5 05/28/87a < 0.5 06/00/8?a < 0.5 06/11/8?a < 0.5 06/ls/87a 1.6 + I.O 06/18/87b < 53 200+ 8 1.1 + 0.01 1320 + 190 < OA3 0.50 + 0.03 06/25/87a < 0.5 o?/oi/8?b < 06 220 + 20 < 1.0 1590 + 60 < 0.36 0.59 + 0.00 07/07/87b < 07 210 + 20 I.I + 0.1 < 1020 < 0.35 0.33 + 0.02 07/ie/8?b < 130 190 + Io 0.73 + 0.00 1050 + 50 1.3 < 0.56 07/21/87b < 100 210 + 9 7.7 + 0.0 < 1030 1.0 < 0.72 o?/28/8?b < 130 190+ 7 1.2 + 0.1 1620 + 60 < 1.0 < 0.85 08/00/8?b < 55 190 + 12 0.3 + 0.2 < 900 1.2 < 0.83

~

os/ii/8?b < 30 210 + 8 1.08 + 0.06 1020 + 30 < 0.85 < 0.58 os/is/s?b < 33 220 + 9 3.8+ 0.0 1020 + 50 < 0.77 < 0.65 08/25/8?b < 88 210 + 9 < 1.0 1150 + 00 0.76 < 0.55 o9/oi/s?b < 91 230 + 9 1.8 + 0.3 < 810 < 1.1 < 0.65 09/08/87b < 95 220+ 9 2.1 + 0.0 1020 + 00 < 0.95 < 0.69 O9/i5/S?b < 220 230+ 8 1.3 + 0.1 1000 + 00 < 0.80 < 0.70 09/22/8?b < 110 270+ 10 1.2 + O.l < 920 0.58 0.59 + 0.05 09/29/87b < 77 220 + 10 < 1.0 1190 + 00 0.60 0.66 + 0.05 io/o6/s?b < 130 230 + 10 < 1.1 1290 + 00 < 0.55 0.67 + 0.05 Io/13/87b < 100 220 + 10 < 0.61 850 + 30 < OA9 0.67 + 0.05 lo/2o/s?b < 220 230 + 10 2.6 + 0.2 780 + 30 < 0.00 0.71 + 0.05 10/27/87b < 250 220 + 10 < 0.6 990 0.59 0.70 + 0.06

+Not Determined aCEP data bASU data

TABLE XXXIV(Cont.)

SURFACE WATER 1987 PYNGS EVAPORATION POND Radiochemical Anal sis ( Ci/I)

Collection Date Gross Al ha Gross Beta Iodine-131 Tritium Strontium-89 Strontium-90 11/03/87b < 170 250 + 10 1.0 + 0.08 660 + 20 < 0.59 < 0.00 11/10/87b <260 200 + 10 < 0.52 980 + 00 < 0.50 0.97 + 0.06 II/17/87b < 270 230 + 9 0.70 + 0.05 890 + 30 < 0.08 0.76 + 0.05 II/20/87b <230 220 + 8 < 0.68 890 + 30 < 0.05 0.50 + 0.03 12/01/87b < 70 260 + 10 < 0.50 1090 + 00 < 0.02 0.58 + 0.00 12/08/87b < 95 250 + 10 < 0.96 820+ 30 < 0.02 0.59 + 0.00 12/15/87b < 27 220 + 10 < 0.68 < 0.02 0.97 + 0.06 12/22/87b < 26 210 + 10 0.99 + 0.6 820 + 30 < 1.0 < 0.81 12/29/87b < 17 230 + 10 1.2 + 0.1 1100 + 00 < 0.88 < 0.81

+Not Determined aCEP data bASU data

E XXXV SURFACE WATER (COMPOSITE) 1987 Ci/I Composite Gross Alpha Gross Beta Strontium-89 Strontium-90 Tritium Collection Location Period 1.0+ 2.0+ 1.0+ 0 5% 1000+

PVNGS Reservoir 3anuary < 1.0 6.0+ 0.6 1.0 < 0.5 < 1000 February < 1.0 6.7 + 0.6 1.0 < 0.5 < 1000 March 2.0 + 1.0 6.6 + 0.7 1.0 < 0.5 < 1000 April < 1.0 3.0 + 0.5 < 1.0 < 0.5 < 1000 May < 1.0 6.6 + 0.6 I.O < 0.5 < 1000 3une < 1.0 3.9 + 0.5 1.0 < 0.5 < 1000 PVNGS Evaporation Pond 3anuary < 1.0 10.9 + 0.8 1.0 < 0.5 2021 + 1282 February < 1.0 10.0 + 0.8 I.O < 0.5 1082 + 899 March 1.7 + 1.0 10.7 + 0.8 1.0 < 0.5 3071 + 1190 April < 1.0 8.1 + 0.7 < 1.0 < 0.5 2739 + 908 May < 1.0 8.0 + 0.6 1.0 < 05 < 1000 3une 1.5 + 0.9 16.? + 0.7 1.0 < 0.5 < 1000

+Detection Limit NOTE: All data contained on this table was supplied by CEP.

TABLE XXXVI SURFACE RATER GAMMASPECTROMETRY 1987 Date Ba-100 Co-60 Co-58 Mn-50 Ru,Rh-106 Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-100 Fe-59 1-131 Collection Location Collected 0>> 5>> 3>> Io" 16>> 10>> 2>> Io>> I 8>> 3>> Ik PVNGS Reservoir oi/is/s7b < 10 <3.3 <2.7 <2.6 <6.8 < 6.7/< 0.2 < 2.6 <2.7 < 27 < 7.5 < 0.5 3anuary ozliz/s7b < 9.4 <3.6 <2.8 <2.7 <6.0 <6.3/< 3.0 < 3.5 <3.1 < 25 < 6.2 < 0.3 Februarya 03/12/87b < 12 <3.1 <3A <2 7 < 6.0 < 6.9/< 2.6 < 2.7 <2.0 < 20 < 5.5 < 3.8 Marcha 00/16/87b < 10 <26 <2A <21 < 5.8 < 0.3/< 2.9 <2A <2A < 20 <5A < 7.3 I Aprila kk Q5/10/87b < 8.3 < 1.8 < 1.7 <2.0 < 3.8 <2.9/<2.0 < 2.1 <1.9 < 20 < 4.0 6.3 C)

I Maya kk o6/Is/87b < 9.7 < 2.5 < 2.1 < 2.0 < 3.8 < 0.0/< 2.0 < 2.0 <2.5 < 19 < 0.8 < 3.7 3unea kk o7/oi/s7b < B.l < 2.7 < 2;I < 2.2 c < 0.8 <0.1/<2A < 2.6 <2A < 19 < 5.3 7.5 07/07/87b < 6.7 < 1.9 < 2.1 < 1.8 c < 0.1 < 3.3/< 2.2 < 2.2 < I.B < 19 < 0.0 3.7 o7li0/s7b < 8.3 <2A <2.0 <2.1 c < 4.8 < 3.7/< 1.9 <2A < 19 < 0.7 8.9 07/21/87b < 10 <25 <22 <2A c < 5.1 <0.1/<Z.0 < 2.9 <2.3 < 19 <0,8 5A 07/28/87b < 11 < 3.0 < 2.6 < 2.0 c < 5.7 < 0.1/< 2.7 < 2.7 <2.1 < 20 < 5.0 5.0 os/o4/s7b < 9.0 < 2.7 < 2.2 < 2.2 c < 0.9 <0.o/<z.s < 2.7 <2.0 < 21 < 0.8 0A 08/ll/87b < 10 < 2.5 < 2.2 < 2.2 c <0.0/< 2.3 < 2.9 <23 < 19 < 0.4 0.6

>>CEP lower limits of detection

>>>>Less than lower limit of detection aCEP data (monthly composite) b/iSU data cNot Determined

TABLE XXXVI(Cont.)

SURFACE WATER GAMMASPECTROMETRY 1987 Ci/I Date Ba-100 Co-60 Co-58 Mn-50 Ru,Rh-lo6 Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-100 Fe-59 1-131 Collection Location Collected 5>> 3>> 2>> 10" 16" 10>> 10>> Is>> 3>>

PVNGS Reservoir (Cont.) 08/18/87 < 9.7 < 2.6 < 2.3 < 2.2 c <0A < 0.1/< 2.3 < 2.3 < 2.2 < 19 < 5.2 II 08/25/87b <15 <34 <3.1 <3.1 <25 <6A < 6.2/< 3.8 < 3.3 < 2.9 ~ < 29 < 6.2 13 o9/oi/s7b < 8.9 < 2.6 <2.3 <2.5 < 20 < 0.7 <0.0/<2A < 2.7 < 2.2 < 18 < 0.6 7.1 09/08/87b < 17 <0.0 < 3.5 < 3.3 < 30 <7.8 <6.2/<3.9 < 3.6 < 3.2 < 30 <6A <5A o9/is/s7b < 9.8 < 2.2 < 2.5 < 2.5 < 21 < 5.0 < 0.1/< 2.0 <2A < 2.5 < 21 ~ <5.5 5A 09/22/87b <9.4 <2.6 <2.5 <2A < 18 < 5.0 <3.7/<2.5 < 2.7 < 2.0 < 18 < 5.2 4.9 09/29/87b <9.6 < 2.3 <2.0 <2.2 < 20 < 0.6 <0.2/<2.0 < 2.5 < 2.3 < 19 < 0,5 7.0 io/o6/s7b <9A <2 6 <2.0 <2.2 < 21 < 0.8 <0.3/<2.3 < 2.3 < 2.2 < 19 < 4.9 5.8 10/13/87b <9.0 <2.0 <2.6 <2.4 < 22 < 5.6 < 3.7/< 2.3 < 2.5 <2A < 20 < 5.1 3.7 IO/20/87b <12 <20 <2.5 <2.2 < 20 < 0.6 <0.7/<2.5 < 2.6 < 2.2 < 20 < 5.2 < 0.6 io/27/87b < 12 <2.3 <2.5 <2A < 22 < 0.8 <0.1/<2.6 < 2.5 <2.3 = < 19 < 0.7 < 0.8 11/03/87b <7.0 <1.9 <I.s <2.0 < 18 <0.0 <3.3/ < 1.9 <2.2 <2.0 < 19 <3.8 <2.5 il/io/s7b < 13 <3.7 < 3.3 <0.1 < 31 < 6.6 < 6.1/<3.7 < 3.9 < 3.0 < 29 < 6.3 8.3 ii/i7/S7b < 8.1 < 2.1 < 2.0 < 1.8 < 17 < 3.3 <3.3/< 2.1 < 2.0 < 2.0 < 19 < 3.9 4.2 II/20/87b < 13 <2.6 <2.6 <2.6 < 22 < 5.3 <0.O/<2.7 < 2.6 < 2.0 < 22 < 5.1 12/Ol/87b <7A <2.1 < 1.6 <1.9 < Is < 0.2 < 3.0/<1.9 < 2.0 < 1.8 < 19 < 0.2 < 2.7 i2/os/s7b < 9.7 < 2.6 <2.0 <2.5 < 20 < 5.2 <0.2/<2.1 < 2.6 < 2.5 < 20 < 5.2 0.3 i2/i5/S7b < 9.1 < 2.4 <2.4 <2.3 < 22 < 5.0 <0.5/<2.7 < 2.6 <2A < 20 < 5.1 0.8 12/22/87b < II <20 <2.6 <2A < 29 < 4.6 <0.2/<2.6 < 3.8 < 2.2 < 19 < 5.5 13 12/29/87b < 12 <2.2 <2.3 <2.5 < 21 < 4.9 <0.6/<2.7 < 2.8 < 2.2 < 20 < 0.8 7.6

>>CEP lower limits of detection

>>>>Less than lower limit of detection aCEP data (monthly composite) bASU data.

cNot Determined

TABLE XXXVI(Cont.)

SURFACE WATER CAMMA SPECTROMETRY 1987 Date Ba-100 Co-60 Co-58 Mn-50 Ru,Rh-106 Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-100 Fe-59 1-131 Collection Location Collected 0>> 5>> 3>> 2>> 10>> 16>> 10>> 2>> Io>> ls>> 3>> i>>

PVNCS Evaporation Pond Ol/15/87b <12 <3.3 <3.0 <3.0 c < 7.6 <8.1/< 0.2 <2.7 <2A <20 < 6.0 < 4.9 3anuarya oz/12/87b < II < 3.5 < 2.0 < 2.7 c < 6.0 < 7.3/< 2.6 < 2.3 < 2.3 <25 < 5.8 < 3.9 Februarya 03/12/87b <8.3 < 2.9 <2.0 <3.0 c < 5.0 <5.3/< 2.8 < 2.8 < 2.5 <23 <5.8 < 2.0 Marcha kk o0/16/s7b <12 < 1.9 <2.0 <2.0 c < 0.0 <3.6/ <2.3 < 2.0 < 1.8 <19 < 0.1 < 5.8 Apriia kk Os/i0/87b < 9.1 < 2.7 <2.2 < 2.3 c < 0.5 <0.3/<2.5 < 2.6 < 2.6 <21 <5.1 <3.3 Maya kk 06/18/87b < 7.0 < 2.2 < 2.0 < 2.1 c < 0.2 <3.5/<1.9 < 2.1 < 1.9 <22 <3.9 < 2.7 3une o7/oi/s7b < 7.2 < 2.2 < 2.1 < 2.5 c <0A <0.1/<z.z < 2.7 <ZA <20 <0,5 <2.6 o7lo7ls7b < 8.5 < 2.7 <2A <2A c < 6.5 <0.6/<Z.7 < 2.8 < 2.5 <20 <5.5 <3.0 O7/i0/S7b < 8.9 < 2.5 < 2.4 < 2.1 c < 5.6 < 3.8/< 2A < 2.5 < 2.2 <19 <0.9 < 3.2 o7/zi/s7b <11 < 2.6 <2.6 <2.0 c < 5.0 < 0.0/< 2.5 < 2.7 < 2.5 <20 <0,5 8.5 o7/zs/s7b < II < 3.0 <2A <2.0 c <6.1 < 0.5/< 2.7 < 2.8 < 2.5 <20 < 5.8 < 0.1 os/o0/s7b <12 <2.7 < 2.6 <2.3 c <5.5 < 0.5/< z.7 < 2.7 < 2.6 <22 <5.8 5.3 os/ii/s7b < 7.9 <2.9 <2.7 <2.0 c <5.2 <0.1/< 2A < 2.7 < 2.5 <19 < 5.1 < 3.6

>>CEP lower limits of detection

>>>>Less than lower limit of detection aCEP data (monthly composite) bASU data Not Determined

TABLE XXXVI(Cont.)

SURFACE WATER CAMMA SPECTROMETRY 1987 Date Ba-140 Co-60 Co-58 Mn-54 Ru,Rh-106 Zn-65. Zr,Nb-95 Cs-137 Cs-134 Ce-144 Fe-59 1-131 Collection Location Collected 5% 3% 10" 16<< 10% 2>> 10% IS>> 3<< I>>

PVNGS Evaporation Pond 08/IS/87 < 9.1 < 2.6 < 2.5 < 2.3 c < 4.6 < 4.2/< 2.4 < 2.7 < 2.5 < 20 <5.1 4.0 (Cont.) os/z5/87b < 8.9 < 2 4 < 2 4 < 2.3 < 23 < 4.S < 4.O/< Z.6 < 2.8 < 2.5 < 19 <5.7 < 2.8 09/Ol/87 < 13 < 2.7 < 2.5 < 2.4 < 21 < 5.4 < 4.6/< 2.8 < 2.6 < 2.4 < 20 <5.6 < 4.9 09/OS/87b < 12 < 3.0 < 2.3 < 2.1 < 22 < 6.0 < 4.0/< 2.7 < 2.9 < 2.5 < 20 <5.3 < 4.5 09/15/87b < S.9 < 2.5 < 2.2 < 2.3 < 20 < 5.0 < 4.2/< 2.5 < 2.5 < 2.2 < 21 <4.8 < 3.3 09/22/87b < 10 < 2.2 < 2.5 < 2.5 < 22 < 5.6 < 4.4/< 2.8 < 2.7 < 2.3 < 20 <5.2 < 4.2 09/29/87b < 12 < 2.9 <2 4 < 2.6- < 25 < 6.0 < 4.7/< 2.7 < 2.7 < 2.5 < 20 <5.7 < 4.9 io/o6/87b < 8.6 < 2.5 < 2.5 < 2.5 < 23 < 5.3 < 3.5/< 2.6 < 2.8 < 2.7 < 19 <5.0 < 3.1 io/i3/s7b- < 8.2 < 2.5 < 2.2 < 2.1 < 22 < 5.0 <4.i/< Z.4 < 2.5 < 2.2 < ls <4.9 < 3.3 io/zo/s7b < 13 < 2.4 <2 4 < 2.6 < 23 < 5.4 < 4.4/< 2.9 < 2.7 < 2.5 < 20 <5.9 < 4.9 io/27/87b < 13 < 2.7 < 2.8 < 2.6 < 22 < 6.0 < 5.0/< 2.9 < 2.8 < 2.5 < 20 <5.7 < 4.5 11/O3/S7b < 8.8 < 2.5 < 2 4 < 2.5 < 24 < 5.9 < 4.7/< 26. < 2.9 < 2.5 < 20 '4.9 < 2.9 ii/io/s7b < 8.9 < 2.8 < 2.3 < 2.1 < 22 < 5.0 < 4.3/< 2.3 < 2.6 < 2.2 < IS <5.1 < 2.7 ll/17/87b < II < 2.8 < 2.4 < 2.3 < 22 < 5.5 < 4.2/< 2.5 < 2.8 < 2.5 < 20 <5.2 < 5.0 ll/24/87b < 15 < 3,7 < 2.9 < 3 4 < 29 < 6.6 < 5.8/< 3.6 < 3.6 < 2.6 < 22 <8.5 < 5.9 12/01/87b < 9.7 < 2.9 < 2.6 < 2.5 < 22 < 5.5 < 3.8/< 2.7 < 2.6 < 2.7 < 20 <56 < 3.0 12/08/87b < 7.6 < 2.3 < 1.8 < 1.9 < 19 < 4.6 < 3.2/< 2.0 < 2.2 < 1.9 < 19 <4.5 < 2.3 iz/i5/s7b < 8.6 < 3.0 < 2.7 < 2.7 < 23 < 6.2 < 4.4/< Z.6 < 2.7 < 2.4 < 21 <5.6 < 3.0 iz/2z/87b < 12 < 2.7 < 2.3 < 2.5 < 23 < 5.0 < 4.4/< 2.9 < 2.8 < 2.3 < 20 <5.5 < 4.8 12/29/87b < 10 < 2.1 < 2.0 < 2.0 < 19 < 4.6 < 3.8/< 2.3 < 2.2 < 1.9 < 20 <4.9 7.3

<<CEP lower limits of detection

%>>Less than lower limit of detection aCEP data (monthly composite) bASU data cNot Determined

8.8 Milk (Fresh)

Fresh milk samples were collected on a monthly basis during 1987 from t following locations:

1. Al Lueck, 3r. Dairy

2. Cordell Baisley Dairy

3. Butler Dairy

0. 3ohn Kerr Dairy

5. Hamstra //2 (designated operational control location)

6. Paul Skousen Dairy All milk samples were analyzed for iodine-131, Strontium-89, Strontium-90 and Gamma-emitting nuclides. Results of these analyses are presented in Tables XXXVIIand XXXYIII.

iodine-13l analyses of the milk samples showed the presence of the isotope in two of the samples. Activity was detected on 05/15/87 at the Al Lueck, 3r.

Dairy (2.6+0.7 pCi/1) and the Cordell Baisley Dairy (2.0+0.7 pCi/1).

Strontium-90 analyses of the milk samples revealed nineteen positive results above the detection limit of 0.5 pCi/l. Results for all but one of the milk samples for Strontium-89 analyses were less than the lower limit of detection (1.0 pCi/1).

Gamma-emitting nuclides of interest remain below the level of detection for all milk samples analyzed in 1987.

-124-

TABLE XXXVII MILK (Fresh) 1987 Ci/1 Date Iodine-131 Strontium-89 Strontium-90 Collection Location Collected p 5% 1.0+ p 5+

Al Lueck, 3r. Dairy 01/16/87a 01/16/87b < 0.73 2.2+ 0.3 02/13/87a 02/13/87b < 1.0 < 0.26 0.63 + 0.00 03/13/87a 03/13/87b < 0.68 < 0.37 0.05 + 0.03 00/17/87a 00/17/87b < 0.06 < 0.02 < 0.30 05/15/87a 2.6 + 0.7 05/i5/87b < 0.96 < 0.31 0.30 + 0.02 06/19/87a 06/19/87b < 1.3 < 0.01 < 0.30 07/20/87b 0.69 + 0.00 08/17/87b < 0.59 09/21/87b < 0.97 10/19/87b < 0.65 ll/16/87b < 0.57

• 12/21/87b < OA9

+Lower limit of detection (CEP)

++Less than lower limit of detection aCEP data bASU data cNot determined

-125-

TABLE XXXVII(Cont.)

MILK (Fresh) 1987 Ci/I Date iodine-131, Strontium-89 Strontium-90 Collection Location Collected 0.5+ 1.0+ 0.5+

Paul Skousen Dairy 01/16/87a oi/i6/s7b < 0.67 < 0.89 02/13/87a 02/13/87b < 0.25 0.59 + 0.03 03/13/87a 03/13/87b < 0.53 0.07 + 0.00 0.52 + 0.03 00/17/87a 00/17/87b < 0.08 < 0.37 0.39 + 0.03 O5/>>/87a O5/i5/87b < 0.91 < 0.30 < 0.25 06/19/87a 06/19/87b < 1.3 < 0.38 < 0.23 07/20/87b < 0.57 c 08/17/87b < 0.58 09/21/87b < 0.97 10/19/87b < 0.65 Il/16/87b < 0.56 12/21/87b < 0.51

+Lower limit of detection (CEP)

++Less than lower limit of detection aCEP data bASU data cNot determined

-126-

TABLE XXXVII(Cont.)

MILK (Fresh) 1987 Ci/1 Date Iodine-131 Strontium-89 Strontium-90 Collection Location Collected p 5% 1.0+ p 5%

3ohn Kerr Dairy 01/16/87a 01/16/87b < 0.66 < 1.2 02/13/87a 02/13/87b < 0.98 < 0.20 0.05 + 0.03 03/13/87a 03/13/87b < 0.66 < 0.37 < 0.27 OO/17/87a 00/17/87b < 0.50 < 0.37 < 0.35 O5/i5/S7a O5/i5/S7b < 0.87 < 0.31 0.26 + 0.02 06/19/87a 06/19/87b < 0.39 < 0.28 07/20/87b < 0.50 08/17/87b < 0.57 09/21/87b < 0.96 '

10/19/87b 0.66 11/16/87b <055 12/21/87b < 0.08

+Lower limit of detection (CEP)

+~Less than lower limit of detection aCEP data bASU data cNot determined

-127-

TABLE XXXVII(Cont.)

MILK (Fresh) 1987 Ci/1 Date Iodine-131 Strontium-89 Strontium-90 Collection Location Collected 0 5+ 1.0+ 0.5+

Butler Dairy Ol/i6/S7a 01/16/87b < 0.70 < 0.88 02/13/87a 02/13/87b < 1.0 < 0.23 < 0.26 03/13/87a 03/13/87b < 0.73 < 0.38 0.33 + 0.02 Oe/17/87a 00/17/87b < 0.09 < 0.02 < 0.30 O5/i5/S7a O5/i5/S7b < 0.98 < 0.32 < 0.25 06/19/87a 06/19/87b < 1.2 < 0.38 < 0.28 07/20/87b < 0.57 08/17/87b < 0.59 09/21/87b < 1.0 io/19/87b < 0.60 11/16/87b < 0.55 12/21/87b < 0.08

+Lower limit of detection (CEP)

"+Less than lower limit of .detection aCEP data bASU data cNot determined

-128-

TABLE XXXVH(Cont.)

MILK (Fresh) 1987 Ci/1 Date Iodine-131 Strontium-89 Strontium-90 Collection Location Collected 0 5+ 1.0+ 0.5+

Cordell Baisley Dairy 01/16/87a 01/16/87b < 0.67 < 1.0 02/13/87a 02/13/87b < 1.0 < 0.25 0.79 + 0.00 03/13/87a 03/13/87b < 0.63 < 0.37 0.77 + 0.05 00/17/87a 00/17/87b < OA5 .< 0.36 0.58 + 0.00 05/15/87a 2.0 + 0.7 05/15/87b < 0.87 < 0.30 0.50 + 0.03 06/19/87a 06/19/87b < 1.2 < 0.03 0.66 + 0.00 07/20/87b < 0.52 08/17/87b < 0.59 09/21/87b 10/19/87b ll/16/87b 12/21/87b

+Lower limit of detection (CEP)

++Less than lower limit of detection aCEP data bASU data Not determined dNot sampled

-129-

TABLE XXXVII(Cont.)

MILK (Fresh) 1987 Ci/1 Date Iodine-131 Strontium-89 Strontium-90 Collection Location Collected 0 5% 1.0>> 0.5+

Hamstra f/2 Dairy Oi/i6/S7a 01/16/87b < 0.71 < 0.89 02/13/87a 02/13/87b < 0.93 < 0.25 0.53 + 0.03 03/13/87a 03/13/87b < 0.61 < 0.37 0.65 + 0.00 00/17/87a OO/17/87b < 0.07 < 0.37 < 0.7 05/15/87a O5/i5/87b < 0.91 < 0.31 0.57 + 0.03 06/19/87a 06/19/87b < 0.39 0.32+ 0.02 07/20/87b < 0.55 08/17/87b < 2.1 09/21/87b < 0.96 10/19/87b < 0.68 ll/16/87b < 0.59 12/21/87b < OA9

+Lower limit of detection (CEP)

++Less than lower limit of detection aCEP data bASU data Not determined

-130-

TABLE XXXVJII MILK (FRESH)

GAMMA SPECTROMETRY 1987 Date Ba-14O Co-60 Co-58 Mn-54 Ru,Rh-106 Zn-65 'r,Nb-95 Cs-137 Cs-134 Ce-144 Fe-59 Collection Location Collected 4<< 5<< 3>> 10>> 16>> 10<< 10" 18 ~ 3<<

Al Lueck, 3r. Dairy Oi/i6/S7a ol/i6/87b. < 69 < 16 <16 <15 <31 < 27/<15 < 17 <12 < 120 < 33 OZ/13/87a 02/13l87b < 54 < 16 < 16 < 13 <26 < 29/< 15 < 13 <11 < 77 < 26 O3/13/87a II 03/13/87b <78 < 13 < ll < 14 < 30 < 32/<15 < 17 < ll < 85 < 25 O4/i7/87a 4s O4/i7/S7b < 74 < II <11 < II < 24 < 19/<12 < 11 < Io < 82 < 29 I Os/iS/S7a Os/iS/87b < 11 < 8.9 < 9.1 < 23 < 16/< I I < 9.9 < 9.6 < 77 < 22 O6/i9/S7a II 06/19/87b < lo < ll < 9.8 < 25 < 19/< I I < II < 9.5 < 79 < 21 07/20/87b < 34 < II < 10 11 c < 21 < 17/< 9.4 < ll < 9.5 < 81 < 21 os/i7/s7b < 36 < 11 <98 II c < 24 < 17/ 10 < 11 < 9.9 < 83 < 20 09/21/87b < 40 < II < 10 < 94 < 84 < 21 < iS/ IO < 10 < 8.7 <79 <20 Io/19/87b <38 < II < II Il < 86 < 22 <isl ii < 10 < 8.9 <75 <20 ii/i6/87b < 39 < II < 10 lo < 87 < 22 <17/ 9.8 < II < s.6 <sz <zi iz/>>/87b < 32 < 8.4 < 7.9 < 7.9 < 76 < 19 <i4/ 7.6 <9.0 < 7.7 <73 <17

>>Lower limit of detection (CEP)

<<<<Less than lower limit of detection aCEP data bASU data cNot Determined

TABLE XXXVIII(Cont.)

MILK (FRESH)

GAMMA SPECTROMETRY 1987 Date Ba-140 Co-60 Co-58 Mn-54 Ru,Rh-106 Zn-65 Zr,Nb-95 Cs-137 Cs-134 Ce-144 Fe-59 Collection Location Collected 0 5>> 3>> 10>> 16>> 10>> IO IS>> 3>>

Paul Skousen Dairy Ol/16/87a kk Oi/16/S7b <67 <14 <12 <12 <30 <33/ 14 < 13 < 11 < I 10 < 32 02/13/87a 02/13/87b < 65 < ls <13 <12 <29 <33/ i3 <110 <34 03/13/87a 03/13/87b <50 < Is <14 <14 <33 <26/ 17 < 12 <12 <74 <28 O4/i7/S7a 04/17/87b <69 <11 <10 <10 c <22 < 18/ 13 < 10 <8.5 <75 <24 05/15/87a Os/15/87b <42 < 7.5 < 7.8 < 8.3 c <17 <14/ 8.8 <9.7 <7.6 <80 < IS 06/19/87a 06/19/87b < 36 < 11 < 10 < 9.7 c <22 <IS/ 9.7 <9.5 <7S <22 07/20/87b <40 < II < lo <9.7 c <26 < 18/ 10 <9.6 <24 OS/17/87b <34 < 12 < 9.7 <9.8 c <24 < i4/ IO <s.4 <24 O9/21/S7b <38 < II < 9.2 < 9.1 < 95 <26 < 19/ ll < II <9,5 <78 <21 IO/i9/87b <40 < II < 12 < 10 < 100 <24 < 19/ ll <12 < lo <S3 <25 ii/16/87b <45 < 12 < II < II < 100 <24 < ls/ 12 <i2 <81 <23 i2/21/S7b <31 < 9.0 < 8.0 <7.7 < 72 <19 <14/ 8.0 <8.6 <7.9

>>Lower limit of detection (CEP)

>>>>Less than lower limit of detection aCEP data bASU data cNot Determined

TABLE XXXVIII(Cont.)

MILK (FRESH)

CAMMA SPECTROMETRY 1987 Ci/I Date Ba-140 Co-60 Co-58 Mn-54 Ru,Rh-106 Zn-65 ZrsNb-95 Cs-137 Cs-134 Ce-144 Fe-59 Collection Location Collected 4>> 5>> 3>> 10>> 16>> 10>> lo>> IS>> 3>>

3ohn Kerr Dairy Ol/i6/S7a k k oi/i6/87b < 230 < 17 < 16 < 13 < 28 < 40/< 23 <12 <10 <98 <38 O2/i3/S7a O2/13/S7b 76 < 18 < 13 < 12 < 29 < 26/< 15 <12 <11 < 120, <34 O3/i3/S7a o3/13/s7b < 44 < 12 < 14 '< 10 < 31 < 29/< 11 < II < 8.5 <69 <27 O4/i7/87a 04/17/87b 78'k < 8.9 < 10 < 7.7 < 19 < 15/< I I <10 < 8.7 <84 <22 OS/i5/S7a Os/i5/S7b 44. < 12 < 9.4 < 10 < 20 < 16/< 11 <11 < 9.6 <78 <20 O6/i9/S7a kk O6/i9/S7b < 38 < 9.4 < 8.8 < 8.6 C <, 17 <16/< 8.2 < 9.4 <?.5 <75 < IS 07/20/87b < 42 < 12 < lo < 9.7 c < 22 <18/< 9.6 < lo < 9.1 <76 <21 08/17/87b 33 < II < 9.6 < 9.5 c < 23 < ls/< 10 <10 < 8.6 <77 <22 09/21/87b 36 < 12 < 9.8 < 9.8 < 93 < 24 <15/< 9 4 < 9.6 < 8.5 <82 <22 10/19/87b 32 < 9.1 < 8.6 <74 77 < 19 <14/< 8.1 < 8.9 < 7.S <80 < ls il/i6/87b 31 < S.S < 7+7 < 7.7 < 70 < 19 <14/< 8.3 < 8.1 < 8.3 <77 <18 12/21/87b < 35 < II < Io < 10 < 110 < 24 <15/< 9.5 <14 < 9.5 <78 <22

<<Lower limit of detection (CEP)

>>>>Less than lower limit of detection aCEP data bhSU data cNot Determined

TABLE XXXVI Cont.)

MILK (FRESH)

CAMMASPECTROMETRY 1987 Date Ba-140 Co-60 Co-58 Mn-54 Ru,Rh-106 2n-65 Zr,Nb-95 Cs-137 Cs-134 Ce-144 Fe-59 Collection Location Collected 5% 3% 10" 16% IQ>> 2% 10% 18>> 3%

/

Butler Dairy Oi/16/S?a k%

Ql/16/8?b 240 16 IS 12 35 < 32/(26 < 13 < 12 < 87 < 46 02/13/87a o2/i3/8?b 70 Is 12 < ll < 31 < 30/<15 < 14 < 9.8 < 75 < 30 03/13/87a 03/13/87b 48 < 15 11 14 < 29 < 29/<13 < 14 < 9.8 < 91 < 30 I

I O4/i?/S?a kk EA o4/i?/s?b 53 < S.l < 9.0 < 8.6 19 < 15/< 9.2 < 8.3 < 7.Q < 68 < 20

% k I Os/iS/S?a 05/15/87b < 48 12 IO lo 26 < IS/< il < 12 < 9.8 < 79 < 24 06/19/87a 06/19/87b 38 < 8.5 < 8.3 < 6,9 c 19 < 13/< 8.5 < 8.7 < 7.9 < 79 < 17 07/20/87b 34 12 11 < 9.9 c 23 < iS/< Ii < 9.8 < 9.1 < 77 < 21 os/17/s?b 35 12 < 9.0 < 9.5 c < 22 < 16/< 9.8 < 11 < 9.0 < 76 < 22 O9/2O/8?b 41 < lo 11 < 10 < 93 24 < IS/< I I < II < 8.6 <?8 < 24 io/i9/s?b 37 12 < 9.1 lo < 94 24 <i?/< ii < II < 10 < 79 < 24

>>/i6/s?b 40 12 11 11 < 96 22 < 18/<11 < 12 < lo < 82 < 26 12/21/87b 35 < ll < 9.2 10 <130 < 21 < 17/<10 < 18 < 11 < 74 < 20

>>Lower limit of detection (CEP)

%>>Less than lower limit of detection aCEP data bASVd ta cNot Determined

TABLE XXXVIII(Cont.)

MILK (FRESH)

CAMMA SPECTROMETRY 1987 Date Ba-140 Co-60 Co-58 Mn-54 Ru,Rh-106 Zn-65 Zr,Nb-95 Cs-137 Cs-134 Ce-144 Fe-59 Collection Location Collected 4% 5k 3k 2k 10" 16" 10" 2k lo>> lsk 3k Cordell Baisley Dairy Oi/i6/S7a 01/16/87b .< 62 < 14 < 15 13 < 34 < 21/< 11 < 16 < 8.8 <76 < 24 O2/i3/S7a 02/13/87b < 69 < 16 11 13 < 28 < 26/< 13 < I IO < 9.5 < 100 < 28 O3/i3/S7a kk 03/13/87b < 57 < 13 J2 ~ 12 < 30 < 28/< I I < 13 < 8.7 <83 <24 O4/i7/S7a O4/i7/S7b < 79 < 9.0 < Jo < lo c < 21 < 19/< 13 <10 < 9.4 < 76 < 24 O5/iS/87a kk kk O5/i5/S7b < 41 11 10 Io < 25 < 19/< 12 < II < 9.4 < 79 < 24 06/19/87a kk 06/19/87b < 43 12 < 9.9 < 9.1 < 25 <17/< 9.5 < II < 9.9 < 80 < 24 o7/2o/87b < 41 ll 11 lo < 23 < 19/< 10 < I I < 8.8 <78 < 22 os/i7/s7b < 39 < Il 10 < 9.3 < 22 < 17/<9.5 < Il < 9.3 <81 <21 09/21/87b d d d d d d d d d d io/i9/s7b d d d d d d d d d d ll/16/87b d d d d d d d d d d 12/21/87b d d d d d d d d d d "Lower limit of detection (CEP}

kkLess than lower limit of detection aCEP data bASU data cNot Determined "No sample taken

TABLE XXXVIII(Cont.)

MILK (FRESH CAMMASPECTROMETRY 1987 Date Ba-140 Co-60 Co-58 Mn-54 Ru,Rh-106 Zn-65 Zr,Nb-95 Cs-137 Cs-134 Ce-144 Fe-59 Collection Location Collected 5>> 3>> 2>> 10>> 16>> Io>> 10>> 18>> 3>>

Hamstra II2 Dairy Oi/i6/S7a oi/i6/s7b < 76 < 16 < 13 < 12 < 25 < 24/< 17 <13 <12 <84 <31 O2/i3/87a 02/13/87b < 47 < 16 < 12 < 13 < 30 < 31/< 14 <17 <10 <76 <31 03/13/87a 03/13/87b < 46 < 12 < 13 < 10 < 25 < 23/< 14 <11 < 9.9 <94 <26 O4/17/S7a O4/i7/S7b < 88 < 12 < lo < 9.9 < 24 < 20/< 14 <11 <10 <80 <30 05/15/87a os/is/s7b < 39 < 8.7 < S.l < 8.9 < 17 <14/< 9.3 < 8.9 < 7.3 <75 < 18 06/19/87a 06/19/87b < 38 < II < 9.2 < 9.7 c < 22 < Is/< 9.3 < ll < 8.2 < 70 < 21 07/20/87b < 34 < 13 < IO < 9.6 c < 26 < is/<io < ll < 9.2 < 79 < 21 os/i7/s7b < 36 < 12 < II < 9.3 c < 24 < iS/< I i < II < 9.5 < 78 < 22 09/21/87b < 38 < 11 < 10 < 10 <86 < 22 <17/<10 < 11 < 9.2 < 78 < 24 IO/i9/S7b < 34 < 9.0 < 8.2 < 8.3 <75 < 19 <14/< 8.4 < 9.3 < 7.9 < 80 < IS ii/i6/S7b 33 < 8.9 < 7.9 < 8.4 <73 < 20 <14/< 8.0 < 9.1 < 7.9 < 80 < 17 12/21/87b < 39 < 11 < lo < 10 <98 < 24 < 18/< 11 <13 <10 < 78 < 20

<<Lower limit of detection (CEP)

>>>>Less than lower limit of detection aCEP data bASU data cNot Determined

8.9 ASU Conclusions The conclusions are based on a review of the radioassay results and background gamma radiation measurements for the 1987 calendar year. The radioassay conclusions are based on observations of fission products radionuclides and do not include observations of naturally occurring radionuclides such as potassium-00.

Gamma isotopic assays of 70 milk samples yielded only one, Hamstra I/2 Dairy (September 21), in which any gamma isotope exceeded the lower limit of detection. In this instance, the iodine-131 concentration (11.0 pCi/1) was extremely close to the lower limit of detection. Radiochemical analysis of the same sample determined iodine-131 to be < 0.96 pCi/l.

None of the 70 milk samples analyzed, radiochemically contained iodine-131 above the lower limit of detection (typically<1 pCi/1).

Gross alpha and beta analyses were performed on 103 surface and ground water samples. All ground water samples were within the natural backgrounds found in the area. The gross beta activity in the evaporation pond was approximately ten times greater than that measured in the reservoir.

Strontium-89 and strontium-90 analyses were performed on 185 surface and ground water samples. Except for an occasional occurrence of strontium-90 in the evaporation pond, all results were at the lower limits of detection for the respective isotopes. The occurrences of strontium-90 in the evaporation pond were < 1 pCi/1 in all instances. Of the 70 milk samples assayed for these radioisotopes, the Lueck Dairy (3anuary 16) sample had the highest strontium-90 concentration, which was approximately twice the lower level of detection.

-137-

ENVIRONMENTALRADIOLOGICALMONITORING PROGRAM ANNUAL

SUMMARY

1987

-'.38-

T TE XXXIX ENVIRONMENTALRADIOLOGICAL ITORING PROGRAM ANNUAL

SUMMARY

Name of Facility: Palo Verde Nuclear Generatin Station Reporting Period: 1987 Location of Facility: Marico a Count Arizona Location with Highest Medium or Type and All Indicator Annual Mean Control Number of Pathway Sampled Total Number Lower Limit Locations Name Mean (f) Locations Nonroutine (Unit of of Analyses of Detection Mean (f) Distance Range Mean (f) Reported Measurement Performed (LLD) Range Direction Range Measurements Air Particulates Gross Beta (609) 0.002 0.028 (557) 21A 0.029(52/52) 0.028(52/52)

(pCi/m3) 0.013-0.055 3 miles 180o 0.010-0.055 0.012-0.050 Gross Alpha (609) 0.005 0.006(5/557) 15A 0.008(1/52) 0.005-0.008 2 miles 05o 0.008 Gamma Spec (08)

Iodine-131 (609) 0.007 0.01'(io/557) lOA 0.020(1/52) 0.008(1/52) 0.008-0.020 2 miles 22.5o 0.020 0.008 Human Vegetation Iodine-131 (36) 0.02 (pCi/g - wet)

Gamma Spec (36) a

+Less than lower limit of detection No activity detected

TABLE XXXIX(Cont.)

ENVIRONMENTALRADIOLOGICALMONITORING PROGRAM ANNUAL

SUMMARY

Name of Facility: Palo Verde Nuclear Generatin Station Reporting Period: 1987 Location of Facility: Marico a Count Arizona Location with Highest Medium or Type and All Indicator Annual Mean Control Number of Pathway Sampled Total Number Lower Limit Locations Name Mean (f) Locations Nonroutine (Unit of of Analyses of Detection Mean (f) . Distance Range Mean (f} Reported Measurement Performed (LLD) Range Direction Range Measurements Animal Vegetation Strontium-89 (75) 0.1 (pCi/g)

Strontium-90 (75) 0.05 Gamma Spec (75)

Drinking IVater Gross Alpha (50) 1.0 5.5(26/50) Gavette S.7(5/1S) N/A (pCi/1) 1.1-20.0 Residence '0.0-20.0 5 miles 225o Gross Beta (50) 2.0 5.0(36/50) McArthur 5.9(12/18) N/A 2.0-15.0 Residence 2.8-10.0 9 miles 337.5o Strontium-90 (05) 0.5 N/A Tritium (50) 1000 N/A Gamma Spec (50) N/A

+Less than lower limit of detection aNo activity detected

TABL XXIX (Cont.)

ENVIRONMENTALRADIOLOGICAL ITORING PROGRAM ANNUAL

SUMMARY

Name of Facility: Palo Verde Nuclear Generatin Station Reporting Period: 1987 Location of Facility: Marico a Count Arizona Location with Highest Medium or Pathway Sampled Type and All Indicator Annual Mean Control 'umber of Total Number Lower Limit Locations Name Mean (f) Locations Nonroutine (Unit of of Analyses of Detection Mean (f) Distance Range Mean (f) Reported Measurement Performed (LLD)" Range Direction Range Measurements Groundwater Gross Alpha (6) 1.0 0.2(2/6) 27ddc 0.2(1/3) N/A 0 (pCi/1) 0.1-0.2 Onsite 0.2 Gross Beta (8) 2.0 3.8(2/8) 27ddc O.6(i/O) N/A 3.0-0.6 Onsite 0.6-Strontium-90 (8) 0.5 N/A Tritium (8) 1000 N/A 0 Gamma Spec N/A Surface Water Gross Alpha (78) 1.0 11.8(8/78) Evap Pond 18.0(3/39) N/A (pCi/1) 1.5-52.0 Onsite 1.5-52.0 Gross Beta (78) 2.0 97.6(78/78) Evap Pond 180.0(39/39) N/A 3.0-270.0, Onsite 8.0-270.0 Iodine-131 (116) 0.5 1.7(56/1 16) Reservoir 5.7(35/58) N/A 0.58-25.0 Onsite 0.96-25.0 "Less than lower limit of detection aNo activity detected

TABLE XXXIX(Cont.)

ENVIRONMENTALRADIOLOGICALMONITORING PROGRAM ANNUAL

SUMMARY

Name of Facility: Palo Verde Nuclear Generatin Station Reporting Period: 1987 Location of Facility: Marico a Count Arizona Location with Highest Medium or Type and All Indicator Annual Mean Control Number of Pathway Sampled Total Number Lower Limit Locations Name Mean f) Locations Nonroutine (Unit of of Analyses of Detection Mean (f) Distance Range Mean (f) Reported Measurement Performed (LLD) Range Direction Range Measurements Surface IVater Tritium (66) 1000 1556(31/66) Evap Pond 1556(31/03) N/A (pCi/1) Cont. 660-3791 Onsite 660-3791 Strontium-89 (78) 1.0 0.52(l/78) Reservoir 0.52(l/39) N/A 0.52 Onsite 0.52 Strontium-90 (78) 0.5 0.63(20/78) Evap Pond 0.60(19/39) N/A 0.33-0.97 Onsite 0.33-0.97 Gamma Spec 6.6(26/78) Reservoir 6.6(22/39) N/A Iodine-131 (78) 0.5 3.7-13.0 Onsite 3.7-13.0 Milk Iodine-131 (100) 0.5 1.9(3/86) Cor dell 2.0(l/10)

(pCi/1) 0.69-2.6 Baisley 2.0 7 miles 05o Strontium-89 (72) 1.0 0.07(l/60) Paul Skousen 0.07(l/12) 0.07 27 miles 90 OA7 Strontium-90 (72) 0.5 0.63(15/60) Al Lueck 0.90(0/12) 0.52(0/12) 0.26-2.2 28 miles 90o 0.30-2.2 0.32-0.65 "Less t lower limit of detection aNo a detected

9.0 Miscellaneous Information No miscellaneous information was obtained for the 1987 Annual Report.

10.0 References

1) 1981 Annual Report, Palo Verde Nuclear Generating Station's Pre-Operational Radiological Monitoring Program.

2) 1982 Annual Report, Palo Verde Nuclear Generating Station's Pre-Operational Radiological Monitoring Program.

3) 1983 Annual Report, Palo Verde Nuclear Generating Station's Pre-Operational Monitoring Program.

0) 1980 Annual Report, Palo Verde Nuclear Generating Station's Pre-Operational Monitroing Program.

5) 'alo Verde Nuclear Generating Station's Pre-Operational Radiological Monitoring Program, Summary Report 1979-1985.

6) 1985 Annual Report, Arizona Nuclear Power Project, Operational Radiological Environmental Monitoring Program.

7) 1986 Annual Report, Arizona Nuclear Power Project, Operational Radiological Environmental Monitoring Program.

8) Operational Radiological Environmental Monitoring Program Report for 1987; Arizona State University, Radiation Measurements Facility.

9) Nuclear Regulatory Commission, "Quality Assurance Criteria for Nuclear Power Plants and Fuel Processing Plant", 10 CFR 50, Appendix B (1985).

10) Environmental Radiation Data, Quarterly Reports, U.S. Environmental Protection Agency, Office of Radiation Programs.

11) Nuclear Regulatory Commission, Branch Technical Position, Revision 1, 1979.

-143-

APPENDIX A 1986 EPA CROSS CHECK RESULTS (CEP)

-144-

EPA CROSS-CHECK PROGRAM 1986 Gross Al ha/Beta In Water EPA CEP Known Value Value

-'eported Date Parameter Ci/I+ I cr Ci/I+ 2o I/86 Gross Alpha 3+5 5+I 6+I 7+I Gross Beta 7+I 9+I 10+ I 3/86 Gross Alpha 15+ 5 13+ 3 15+ 3 16+ 3 Gross Beta<< 8+5 15+ 3<<<<

16+ 3<<<<

17+ 3<<<<

5/86 Gross Alpha 8+5 No Data Reported .

Gross Beta 15+ 5 No Data Reported 7/86 Gross Alpha 6+5 5+I 6+I 6+I Gross Beta 18+ 5 15+ 3 16+ 3 18+ 3 9/86 Gross Alpha 15+ 5 12+ 2 12+ 2 IO+ 2 Gross Beta" <<" 8+5 17+ 0 18+ 3 20+ 3 11/86 Gross Alpha 20+ 5 No Data Reported Gross Beta 20+ 5 No Data Reported

<<Spike sample was reanalyzed and a value of 6 + 2 pCi/I was obtained

<<<<Based on EPA Criteria CEP hit this spike Cross-Check

<<<<<<Spike sample was reanalyzed and a value of 7. + 2 pCi/I was obtained

-145-

EPA CROSS-CHECK PROGRAM 1986 Gamma In Water EPA CEP Known Value Reported Value Date Parameter Ci/I+ I Ci/I+ 2a o'0+

2/86 Cesium-130 5 29+0 20+ 0 33+ 5 Cesium-137 22+ 5 18+ 0 16+ 0 21+ 0 Chromium-51 38+5 55 + 10 53 + 10 52 + 10 Cobal t-60 18+ 5 25+ 2 29+ 0 21+3 I Ruthenium-106 0+5 59 + 20 60 + 20 60 + 20 Zinc-65+ 00+ 5 57 + 15 56 + 12 56 + 12 6/86 Cesium-137 10+ 5 9+2 12+ 2 10+ 2 Chromium-51 0+5 No Data Reported Zinc-65 86+ 5 87+ 8 80+ 8 90+ 8 Cobalt-60 66+ 5 51+ 5 53+ 5 58+ 5

+Spike sample was reanalyzed and a value of 01 +10 pCI/I was obtained

-146-

EPA CROSS-CHECK PROGRAM 1986 Gamma In Water (Continued)

EPA CEP Known Value Reported Value Date Parameter Ci/I+ la Ci/I + 2o Ruthenium-106 50+ 5 No Data Reported Cesium-130a 09+ 5 37+ 5 38+ 5 39+ 5 10/86 Ruthenium-106 70+ 5 65 + 21 67+ 6 71 + 23 Cesium-130 28+ 5 22+ 2 26+ 2 28+ 2 Cesium-137 02+ 0 03+ I 08+ 3 Cobalt-60 31+ 5 28+ 0 29+ 0 29+ 0 Zinc-65 85+ 5 77+ 7 78+ 7 79+ 7 Chromium-51++ 59+ 5 32 + 10 02 + 10 05 + 10

++Gamma analysis indicated a value of 62 + 30 pCi/I, which was not reported aDuring analysis a value of 03.2+ 5 pCi/I was obtained, but'not reported

-147-

EPA CROSS-CHECK PROGRAM 1986 Tritium in Water EPA CEP Known Value Reported Value Date Parameter Ci/I+ I o Ci/I+ 2 (y 2/86 Tritium+ 5227 + 523 0100 + 010 0590 + 059 0190 + 019 6/86 Tritium++ 3125 + 360 2290 + 230 2170 + 220 2050 + 210 10/86 Tritium 5973 + 597 5062+ 600 5257 + 600 5880 + 600

+Spike sample was reanalyzed and a value of 5028 + 000 pci/I was obtained

++Spike sample was reanalyzed with the LS-5801 and a value of 3533 + 565 pCi/I was obtained

-148-

EPA CROSS-CHECK PROGRAM 1986 Strontium In Water EPA CEP Known Value Reported Value Date Parameter Ci/I + I cF Ci/I+

2o'5+

I/86 Strontium-89 31+ 5 I 37+ I 00+ I Strontium-90" 15+ 1.5 19+ 3.1 18+ 3.0 22+ 2.6 5/86 Strontium-89 5+ 5 0+I 5+I 6+I Strontium-90 5+ 1.5 2+ I 3+I 0+I

+Spike sample was reanalyzed and a mean value of 15 + 3 pCi/I was obtained

-149-

EPA CROSS-CHECK PROGRAM 1986 Iodine-131 In Water EPA CEP Known Value Reported Value Date Parameter Ci/1+ 1 G Ci/1+ 2 o'+0 O/86 Low Level 9+6 7+0 7+0 8/86 High Level+ 05+ 6 30+ 0 33+ 0 39+ 0

+Spike sample was reanalyzed and a value of 00 + 0 pCi/1 was obtained

-150-

EPA CROSS-CHECK PROGRAM 1986 Radionuclides In Milk EPA CEP Known Value Reported Value Date Parameter Ci/1+ 1 Ci/I+ 2 o o'1+

6/86 Iodine-131 6 36+ 6 32+ 0 00+ 7 Cesium-137 31+ 5 30+ 5 26+ 0 28+ 0 Strontium-89a 0+5 13+ 0 15+ 0 16+ 0 S trontium-90a 16+ 1.5 Potassium 1600 + 80 mg/1 1568 mg/1 1577 mg/1 1633 mg/1 10/86 Iodine-131 09+ 6 03+ 3 33+ 9 37+ 0 Cesium-137+ 39+ 5 53+ 25 58 + 22 08 + 20 Strontium-90 0+ 1.5 No Data Submitted Strontium-89 9+5 No Data Submitted Potassium 1565+ 78 mg/1 1070 mg/1 1090 mg/1 1505 mg/1

+Spike sample was reanalyzed and a value of 30 + 5 pCi/1 was obtained aReported values were switched when reported. CEP reported values for Sr-89 should have been 0, 0 and 0; values for Sr-90 should have been 13, 15 and 16.

-151-

EPA CROSS-CHECK PROGRAM 1986 Iodine-131 In Milk EPA CEP Known Value Reported Value Date Parameter Ci/I+ 1 a Ci/I+ 2 a 2/86 Low Level 9+6 9+I 9+1 10+ 1

-152-

EPA CROSS-CHECK PROGRAM 1986 Radionuclides in Air Filters EPA CEP Known Value Reported Value Date Parameter ~l<<

• Ci/filter + 2 a O/86 Gross Alpha 15+ 5 15+ 3 15+ 3 16+ 3 Gross Beta 07+ 5 56+ 6 57+ 6 58+ 6 I

Strontium-90+ 18+ 1.5 26+ 0 27+ 0 28+0 Cesium-137 10+ 5 8+3 9+3 9+3 9/86 Gross Alpha 22+ 5 23+ 2 22 + 2 26+ 2 Gross Beta 66+ 5 60+ 2 63+ 2 66+ 2 Strontium-90++ 22+ 1.5 17+ 3 21+ 3 18+ 3 Cesium-137 22+ 5 23+ 3 25+ 3 22+ 3

+Spike sample data was reviewed and indicated that a value of 17 + 2 pCi/filter was obtained

++Spike sample data was reviewed and indicated that a value of 22+ 3 pCi/filter was obtained

-153-

EPA CROSS-CHECK PROGRAM 1986 Radionuclides In Food EPA CEP Known Value Reported Value Date Parameter Ci/k +le Ci k +2a 1/86 iodine-131 20+ 6 20+ 5 21+ 7 22+ 7 Cesium-137 15+ 5 15+ 5 16+ 5 17+ 5 Potassium 950 + 103 mg/kg 910 mg/kg 950 mg/kg 900 mg/kg Strontium-89 25+ 5 No Data Reported Strontium-90 10+ 1.5 No Data Reported 7/86 Strontium-89 30+5 23 +5 25+ 5 27+ 5 Strontium-90 19+ 1.5 22+ 0 23+ 0 26+ 0 Iodine-131 30+ 6 18+ 5 18+ 5 19+ 5 Cesium-137 20+ 5 15+ 6 16+ 6 16+ 6 Potassium 1150 + 58 mg/kg 1210 mg/kg 1235 mg/kg 1205 mg/kg

-154-

APPENDIX B 1987 EPA CROSS CHECK RESULTS (CEP)

-155-.

EPA CROSS-CHECK PROGRAM 1987 Radionuclides in Air Filters EPA CEP Date Parameter ~l' Known Value Reported Value Ci/filter + 2 cr O/87 Gross Alpha 10+ 5 20+ I 18+ I 17+ I Gross Beta 03+ 5 63+ 2 60+ 2 66+ 2 Strontium-90 17+ 1.5 19 + 10 23 + 10 20 + 10 Cesium-137 17+ 5 19+ 5 20+ 5 8/87 Gross Alpha 10+ 5 10+ I 12+ I 13+ I Gross Beta 30+ 5 29+2 31+ 2 33+ 2 Strontium-90 10+ 1.5 8+ 1 9+ I 9+I Cesium-137 10+ 5 8+5 10+ 5 10+ 5

-156-

EPA CROSS-CHECK PROGRAM 1987 Gross Al ha and Gross Beta in Water EPA CEP Date Parameter ~l Known Value Reported Value Ci/I+ 2<

i/87 Cross Alpha li + 5 12+ 2 12+ 2 12+ 2 Gross Beta 10+ 5 22+ 6 25+ 6 27+ 7 3/87 Gross Alpha 3+5 0+2 0+2 0+2 Gross Beta 13+ 5 12+ 0 9+0 8+0 5/87 Cross Alpha II + 5 ll + 2 II + 2 12+ 2 Cross Beta 7+5 17+ 6 18+ 6 19+ 6 7/87 Cross Alpha 5+5 0+2 5+2 6+2 Gross Beta 5+5 6+3 7+3 9+3 9/87 Gross Alpha 3+I 3+I 3+I Gross Beta 12+ 5 13+ I 13+ I 15+ I

-157-

EPA CROSS-CHECK PROGRAM 19S7 Gross Al ha and Gross Beta in V/ater (Cont.)

EPA CEP Known Value Repor ted Value Date Parameter Ci/1+ 16 Ci/1+ 2a 11/87 Gross Alpha 7+5 6+2 7+2 8+2 Gross Beta 19+ 5 16+ 3 18+ 3 20+ 3

-158-

EPA CROSS-CHECK PROGRAM 1987 Gamma in Water EPA CEP Known Value Reported Value Date Parameter Ci/I+ I a Ci/I+ 2 cr 2/87 Cobalt-60 50+ 5 55+ 5 55+5 56+ 5 Zinc-65 91+ 5 102 + 7 110 + 6 108 + 6 Ruthenium-106 100 + 5 93+ 5 105 + 5 108 + 5 Cesium-130 59+ 5 61+ 3 57+2 60+ 3 Cesium-137 87+ 5 109 + 6 98+ 6 102+ 5 6/87 Cobalt-60 60+ 5 69+ 5 69+ 5 71+ 5 Zinc-65 10+5 12+3 IO+ 3 16+ 3 Ruthenium-106 75+ 5 80+ 5 75+ 5 71+ 5 Cesium-130. 00+ 5 00+ 3 39+ 3 38+ 3 Cesium-137 80+ 5 82+ 5 80+ 5

.85+ 5 Chromium-51 Ol + 5 06+ 3 00+ 3 00+ 3

-159-

EPA CROSS-CHECK PROGRAM 1987 Gamma in Water (Cont.)

EPA CEP Known Value Reported Value Date Parameter Ci/I+ I e Ci/I+

20'6+8 10/87 Chromium-51 70+5 67+ 8 73+ 8 Cobalt-60 15+ 5 17+ 2 18+ 2 19+ 2 Zinc-65 06 +5 55 + 15 57+ 15 61 + 15 Ruthenium-106 61+ 5 71 + 10 75 + 10 79 + 10 Cesium-l30 25+ 5 26+ 3 26+ 3 27+ 3 Cesium-137 51+ 5 56+ 5 56+ 5 58+ 5

-160-

EPA CROSS-CHECK PROGRAM 1987 Tritium in Water EPA CEP Known Value Reported Value Date Parameter Ci/I+ 1 Ci/1+ 2 a 0'209 2/87 Tritium + 021 0600 + 500 0510 + 500 0330 + 500 6/87 Tritium 2895 + 357 2866 + 285 2831 + 288 2792 + 288 10/87 Tritium 0092+ 009 3867 + 300 3925 + 300 0211 + 300

-161-

EPA CROSS-CHECK PROGRAM 1987 Strontium In Water EPA CEP Known Value Reported Value Date Parameter Ci/I+ I 6 Ci/I+ 2e I/87 Strontium-89 25+ 5 15+ 5 17+ 6 20+ 5 Strontium-90 25+ 1.5 22+ 5 20+ 6 20+ 5 5/87 Strontium-89 01+ 5 26+ 5 30+ 5 30+ 5 Strontium-90 20+ 1.5 10+ 3 15+ 3 17+ 3

-162-

EPA CROSS-CHECK PROGRAM 1987 Iodine-131 in Water EPA CEP Known Value Reported Value Date Parameter Ci/1+ 1 Ci/1+ 2 o'+

a'.0 3/87 Low Level + + 0.7 0 2+0 2+0 8/87 High Level 08+ 6 03+ 5 01+ 0 39+ 3 10/87 Mid Level 26+ 6 19+ 0 20+ 0 22+ 0

<<Unable to reanalyze due to half-life decay.

-163-

EPA CROSS-CHECK PROGRAM 1987 Radionuclides in Milk t

EPA CEP Known Value Reported Value Date Parameter Ci/I+ I 6 Ci/I+ 2 rJ 6/87 Strontium-90 35+ 1.5 29+ 3 28+ 3 32+ 3 Cesium-1-37 70+ 5 75+ 2 77+2 70+ 2 Strontium-89+ 69+ 5 5+2 5+2 0+2 Iodine-131 59+ 6 63+ 2 60+ 2 60+ 2 Potassium 1525 + 76 mg/I 1617 + 150 mg/I 1608+ 150 mg/1 1608 + 150 mg/I 10/87 EPA cancelled Milk Study due to EPA facility being reroofed.

+Unable to reanalyze due to limited sample.

-164-

EPA CROSS-CHECK PROGRAM 1987 Iodine-131 In Milk EPA CEP Known Value Reported Value Date Parameter Ci/1+ 1 Ci/1+ 2a 0'.0 2/87 Low Level + 0.9 9.0+ 1.0 8.0 + 0.5 8.0+ 0.5

-165-

APPENDIX C 1987 CROSS CHECK RESULTS (ASU)

-166-

EPA INTERCOMPARISON RESULTS JANUARY 1987 THROUGH APRIL 1987 All values in Ci/liter Ave. all labs Date Sam le Nuclide EPA Value RMF Value *I 1-9-87 Water Strontium-89 25+ 5 20.0+ 0.8 23.3+ 6.3 1.002 Strontium-90 25+ 1.5 29.6+ 2.8 23.3 + 2.8 0.805 1-23-87 Water Gross Alpha ll + 5 10.2 + 0.5 10.2+ 2.6 0.775 Gross Beta 10+ 5 11.6 + 1.1 11.2 + 2.3 0.862 2-6-87 Water Chromium-51 71 Cobalt-60 50+ 5 08.7 + 5.6 50.0 + 0.0 1.027 Zinc-65 91+ 5 92.6 + 1.9 93.9 + 8.1 0.983 Ruthenium-106 100 + 5 92.9 + 7.6 95.0 + 15.5 1.076 Cesium-130 59+ 5 53.2 + 1.5 50.8 + 3.5 1.109 Cesium-137 87+ 5 88.2,+ 2.5 87.3 + 5.0 0.997 2-13-87 Water Tritium 0210 + 020 3800 + 250 0160 + 020 1.108 2-27-87 Milk Iodine-131 9.0 + 0.9 9.07 +0.83 8.58 + 1.5 1.000 3-13-87 Water Radium-226 7.3 + 1.1 6.7 + 0.2 6.96 + 0.92 1.090 0-3-87 Water Iodine-131 7.0 + 0.7 7.3 + 0.8 7.26 + 1.08 0.959 0-10-87 Air Filter+ Gross Alpha IO+ 5 13.5 + 1.9 15.5 + 3.0 1.037 Gross Beta 03+ 5 05.0 + 0.9 05.3 + 5.0 0.956 Strontium-90 17 + 1.5 18.5 + 0.8 17.5 + 1.8 0.919 Cesium-137 8+5 9.3+ O.l 9.3+ 2.1 0.860 esults are pCi/filter

-167-

EPA INTERCOMPARISON RESULTS APRIL 1987 THROUGH SEPTEMBER 1987 All values in Ci/liter Ave. all labs Date Sam le Nuclide EPA/RMF I 0-17-87 Blind Cobalt-60 8+5 7.9 + 0.1 9.0+ 2.0 1.013 Cesium-130 20+ 5 18A + 1.6 18.2+ 2.6 1.086 Cesium-137 15+5 13.9 + 0.9 15.7 + 2.2 1.079,.

'0+

Gross Alpha 8 52 + 10 28.0 + 8.3 0.577 Gross Beta 66+ 5 101 + 8 60.5 + 7.3 0.653 Strontium-90 10+ 1.5 10.5 + 0.0 9.98 + 1.56 0.952 Strontium-89 19+ 5 19.8 + 0.3 17.0+ OA 0.960 Radium-226 3.9 + 0.6 3.7 + 0.5 3.75 + 0.02 1.050 5-8-87 Water Strontium-89 Ol + 5 02.1 + 1.5 39.0 + 7.1 Strontium-90 20+ 5 23.1 + 0.7 19.6 + 2.9 6-26-87 Milk Iodine-131 59+ 6. 60+ 3 62.0 + 5.9 0.983 Strontium-89 69+ 5 88.6+ 3A 63.7+ 10 0.779 Strontium-90 35+ 5 38.3+ 1.5 30.3 + 5.1 0.910 Cesium-137 70+ 5 76.9 + 0.5 75.2 + 5.7 0.962 7-20-87 Water Gross Alpha 5+5 5.2+ 0.0 0.7 + 1.0 0.962 Gross Beta 5+5 7.8+ 1.6 6.1 + 1.8 0.601 8-7-87 Water Iodine-131 08+ 6 05.3 + 3.1 07.2+ 0.9 1.060 8-28-87 Air Filter+ Gross Alpha 10+ 5 11.0 + .0.7 10.5 + 2.2 0.877 Gross Beta 30+ 5 31.0+ 2.0 30.3 + 0.3 0.968 Cesium-137 10+ 5 8.7 + 1.7 10.7 + 1.9 1.109 Strontium-90 10+ 5 10.2 + 0.2 9.6 + 2.0

<Results are pCi/filter

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EPA INTERCOMPARISON RESULTS OCTOBER 1987 THROUGH DECEMBER 1987 All values in Ci/liter Ave. all labs Date Sam le Nuclide EPA/RMF 10-9-87 )Vater Chromium-51 70+ 5 66.0+ 35 68.8 + 8.9 I.050 Cobalt-60 15+ 5 16.8 + 1.8 168 + 2.0 0.893 Zinc-65 06+ 5 05.6 + 3.6 07.2 + 0.7 1.009 Ruthenium-106 61+ 5 53.0 + 0.2 60.2+ 9.7 1.102 Cesium-130 25+ 5 23.0+ OA , 20.0 +.2.5 1.087 Cesium-137 51+ 5 51.3 + 0.7 51.8 + 3.0 0.990 11-21-87 Blind Cross Alpha 25.0 + 2.5 Gross Beta 68.8 + 1.6 Cobalt-60 16.1 + 1.1 Cesium-130 15.7 + 0.5 Strontium-89 19.2 + 1.0 Strontium-90 I I.O + 0.2 Radium-226 0.50 + 0.23 12-0-87 IVater iodine-131 27.1 + I.I

+Data not received from EPA in time for inclusion.

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EML UALITYASSURANCE PROGRAM INTERCOMPARISON RESULTS MAY 1987 Sample Reported T Units Nuclide Value EML Value EML/RMF Air Filter pCi/filter Ber yllium-7 0000 + 100 0600. 1.053 Air Filter pCi/filter Manganese-50 060 + 10 055. 0.990 Air Filter pCi/filter Cobalt-60 050 + 10 0.990 Air Filter pCi/filter Strontium-90 930+ 1.0 9.55 1.027 Air Filter pCi/filter Cesium-137 070 + 10 070. 1.000 Soil pCi/g Strontium-90 0.53 + 0.06 0.180 0.307 Soil pci/g Cesium-137 0.00 + 0.05 0.08 1.087 Soil PCi/8 Radium-226 0.20 + 0.01 0.79 0.000 Tissue pCi/g Strontium-90 1.7+ 0.2 2.87 1.6+

Tissue pCi/g Cesium-137 1.2 0.002 Tissue pCi/5 Radium-226 0.35 + 0.02 0.0 1.136a Vegetation pCi/g Cobalt-60 0.68 2.10 Vegetation pCi/g Strontium-90 23+ 3 20.6 0.893 Vegetation pCi/g Cesium-137 10+ 1 10.5 1.031 Water pCi/ml Tritium 29.7+ 2.1 33.7 1.136 Water pCi/ml Manganese-50 5.1 + 0.1 0.72 0.926 Water pCi/ml Cobalt-60 0.7 + O.l 0.59 0.980 Water pCi/ml Strontium-90 0.11 + 0.01 1.33 12.5OOb Water pCi/ml Cesium-137 2.0 + 0.1 2.30 0.971 Two errors were found on the basis of these results:

aRadium-226 The wrong counting efficiencies were used. Corrected results are Tissue 0.01+0.02 pCi/g; Soil 0.73 + 0.02 pCi/g.

Strontium-90 The water result was not reported in pCi/ml as EML requested. Corrected i is 1.05+0.01 pCi/ml.

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EML UALITYASSURANCE PROGRAM INTERCOMPARISON RESULTS DECEMBER 1987 Sample Reported Units Nuclide Value EML Value EML/RMF Air Filter pCi/filter Beryllium-7 920+ 60 896. 0.970 Air Filter pCi/filter Strontium-89 05+ 3 38.3 0.851 Air Filter pCi/filter Strontium-90 07+ 3 36.9 0.787 Air Filter pCi/filter Zirconium-95 180 + 10 188 1.00 Air Filter pCi/filter Antimony-125 820 + IO 963 1.18 Air Filter pCi/filter - Cesium-137 300 + 6 290 0.952 Air Filter pCi/filter Cerium-100 010 + 20 006 0.990 Soil pCi/g Strontium-90 12.3 + 0.6 12.7 1.03 Soil pCi/g Strontium-90 11.8 + 0.6 12.7 1.08 Soil pCi/g Cesium-137 0.19 + 0.00 0.211 pCi/g Cesium-137 0.20 + 0.05 0.211 1.05 pCi/g Radium-226 0.72 + 0.01 0.636 0.885 Soil pCi/g Radium-226 0.78 + 0.02 0.636 0.813 Tissue pCi/g Strontium-90 11.0 + 0.7 12.9 Tissue pCi/g Cesium-137 0.19 + 0.00 0.190 1.00 Tissue pCi/g Cesium-137 0.19 + 0.00 0.190 1.00 Vegetation pCi/g Cesium-137 1.9 + 0.1 1.82 0.962 Vegetation pCi/g Cesium-137 2.1 + 0.1 1.82 0.870 Water pCi/ml Tritium 17.1 + 0.5 19.1 Water pCi/ml Manganese-50 2.26 + 0.02 2.28 1.01 Water pCi/ml Cobalt-57 0.10 + 0.01 0.102 1.01 Water pCi/ml Cobalt-60 2.27 + 0.02 2.27 1.00 Water pCi/ml Strontium-90 0.206 + 0.016 0.252 1.02 Water pCi/ml Strontium-90 0.236 + 0.010 0.252 1.06 ter pCi/ml Cesium-137 2.28 + 0.02 2.28 1.00

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USNRC TEST SAMPLE RESULTS A11 values in uCi/ml Certificate Agreement Nuclide RMF Value Ratio Ran e Trtium 1.16 E-0 1.27 E-0 0.91 0.75 - 1.33=

Strontium-S9 1.50 E-0 1.70 E-0 0.86 0.75 - 1.33 Strontium-90 2.15 E-5 1.57 E-5 1.37. 0.75 - '1.33 The USNRC sample was supplied in a plastic bottle. Tritium will undergo isotope exchange in platies, resulting in low results. The sample was over five months old when received by the RMF.

The strontium calculations were repeated and no computational errors were found. The sample results which were originally reported by the RMF were averages of duplicate measurements. Therefore, precision is not a factor. The RMF has reviewed the sample procedures and analysis and can find no explanation for the discrepancy.

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IODINE-131 CHARCOAL CANNISTER INTERCOMPARISON RESULTS All values in uCi Ge(Li)

Detector 8 Known Value RMF Value RMF/Known 2 0.0720 0.0771 1.071 3 0'.0720 0.0783 1.088 0.0720 0.0773 1.070 The vendor supplied one face-loaded charcoal cannister for analysis.

The reuslts are consistent and in excellent agreement with spiked cannister. =

The RMF calibrates the Ge(Li) detectors by averaging three spiked cannisters. The cannisters are spiked with Iodine-131 standards, traceable to the National Burau of Standards, over the first 1096 of the charcoal.

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TRITIUM IN URINE INTERCOMPARISON RESULTS AUGUST 19S7 All values in Ci/liter

~Sam le Known Yalue RMF Yalue++ BRMD+/RMF 3.73 E+5 3.23 E+5 + 0.8% 1.15 1.21 E+7 1.09 E+7 + 1.0% 1.11 3 7.00 E+7 6.30 E+7 + 0.0% 1.10

+Bureau of Radiological and Medical Devices, Canada.

++Averge of 5 replicates are required by BRMD.

Although this intercomparison shows a systematic error of 10 to 15%,

no other participating laboratory demonstrated precision as good as the RMF. The improvements made through our quench correction techniques and re-calibration should improve accuracy.

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1987 ASU/PVNGS TLD INTERCOMPARISONS Month Performance Plus Bias January 0.156 February 0.222 March '.055 April 0.302 May 0.000 June 0.290 July 0.180 August 0.267 September 0.060 0.127

'ctober November 0.002 December Values are considered passing if less than 0.5 (ANSI NI3.11)

+Test not conducted.

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APPENDIX D 1987 LAND USE CENSUS

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1.0 INTRODUCTION

In accordance with PVNGS Technical Specification 12.2, the annual Land Use Census within a five mile radius of mid line PVNGS Unit 2 containment was performed during, December 1987 by Ralph B. Ochoa and Carolyn Persson.

Observations were made in each of the 16 meteorological sectors of the nearest milking 'animals (cows and goats), nearest residence, and the nearest garden of greater than 500 ft2 producing broad leaf vegetation. This census was completed by driving the roads within a five mile radius of PVNGS noting the location of the above mentioned items.

The results of the Land Use Census are presented in Table 1 and discussed below. In 'he table, the radial direction and mileage from Unit 2 containment are presented for each location. The radial direction is one of the 16 different compass points. The mileage was estimated from mao position from each location.

2.0 CENSUS RESULTS 2.1 Nearest Resident Table 1 presents the location of the nearest resident to the PVNGS

.in each of the 16 meteorological sectors. There were two changes in the nearest resident status noted in the 1987 census. These changes were in the east northeast and the south sectors.

2.2 Hilkin Animals Hilk goats were located within the five mile radius of Unit 2 during the 1986 Land Use Census.

Hilk was obtained for radiological analysis in February, 1987. Since the dose commitment was LLD, it was not 20X greater than at a location from which samples are currently being obtained in accordance with Specification 3.12.1. Therefore, the new location identified in the 1986 Land Use Census was not added to the radiological environmental monitoring program for 1987.

2.3 Ve etable Gardens No gardens greater than 500 square feet producing broad leaf vegetation were found during the 1987 Land Use Census.

2.4 Conclusion No changes were made to the REHP as a result of the 1987 Land Use Census.

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Table 1 NEAREST RESIDENCE WITHIN FIVE i4!ILES OF PVNGS December 1987 meteorological Radial Sector ~Hllea e N 1.50 NNE 1.50 NE 2.00 ENE 2.70 (NEW) 2.25 ESE 3.75 SE 4.00 SSE 4.50 2.80 (NEW)

SSW No Residents SW 2.90 WSW 1.75 No Residents No Residents 4.00 NNW 2.50

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