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 J CONTROLS FOR ENVIRONMENTAL POLLUTION, INC.
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880SP30Sp4 PDR~DOCK 88042S R 0S000S28@CD ARIZONA NUCLEAR POWER PRO3ECT PALO VERDE NUCLEAR GENERATING STATION OPERATIONAL RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM REPORT FOR 1987 SUBMITTED BY CONTROLS FOR ENVIRONMENTAL POLLUTION, 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 1.0 2.0 3.0 0.0 5.0 6.0 7.0 8.0 9.0 10.0 Title Abstract Introduction Description of the Monitoring Program Analytical Procedures rN Sample Preparation Methods Nuclear Instrumentation Isotopic Detection Limits and Activity Determinations Quality Control Program Data Interpretation and Conclusions Miscellaneous Information References

~Pa e 19 22 25 32 103 Appendix A EPA Cross-check Results (1986 Ammended}Appendix B EPA Crass-check Results (1987}155 Appendix C ASU Cross-check Results Appendix D 1987 Land Use Census 166 176 i

TABLES Number Collection Locations Collection Schedule Title~Pa e IV V VI VII Vill IX X XI XII XIII,xrv XV XVI XVII XVIII XIX XX XXI XXII XXIII XXIV XXV XXVI XXVII X XVIII XXIX 28 29 30 3I 36 38 00 02 05 07 arter)5l 67 69 71 73 Quarter)76 d Quarter)78 Quarter)80 h Quarter)82 90 y 92 rometry 93 95 98 I02 Aliquot Scanned for Detection Limit Calculation and Actual Analysis (CEP)Sample Counting Times (CEP)Detection Limits by other than Gamma Spectrometry (CEP)Detection Limits by Gamma Spectrometry (CEP)Gross Beta in Air Particulate Data (First Quarter)Gross Beta in Air Particulate Data (Second Quarter)Gross Beta in Air Particulate Data (Third Quarter)Gross Beta in Air Particulate Data (Fourth Quarter)Gross Beta in Air Particulate Data (Station Summary)Gross Alpha in Air Particulate Data (First Quarter)Gross Alpha in Air Particulate Data (Second Quarter)Gross Alpha in Air Particulate Data (Third Quarter)Gross Alpha in Air Particulate Data (Fourth Qu Airborne Radioiodine Data (First Quarter)Airborne Radioiodine Data (Second Quarter)Airborne Radioiodine Data (Third Quarter)Airborne Radioiodine Data (Fourth Quarter)Quarterly Thermoluminescent Dosimetry (First Quarterly Thermoluminescent Dosimetry (Secon Quarterly Thermoluminescent Dosimetry (Third Quarterly Thermoluminescent Dosimetry (Fourt Human Vegetation Human Vegetation (Leafy), Gamma Spectrometr Human Vegetation (Citrus Fruits), Gamma Spect Animal Vegetation Animal Vegetation, Gamma Spectrometry Drinking IVater 0

TABLES (Cont.)Number XXX XXXI XXXII XXXIII XXXIV XXXV XXXVI XXXVII XXXVIII XXXIX Title Drinking Water, Gamma Spectrometry Groundwater Groundwater, Gamma Spectrometry Surface Water, PVNGS Reservoir Surface Water, PVNGS Evaporation Pond Surface Water (Composite

-CEP), PVNGS Evaporation Pond and Reservoir Surface Water, Gamma Spectrometry PVNGS Evaporation Pond and Reservoir Milk (Fresh)Milk (Fresh), Gamma Spectrometry Environmental Radiological Monitoring Program Annual Summary-1987~Pa e 105 109 110 113 116 119 120 125 131 133 I

FIGURES Number 7 8 9 10 11 12 13 1016 17 18 19 20 Title Area Collection Locations-Map Site Collection Locations-Map Gross Beta in Air Particulate (Station IA)Gross Beta in Air Particulate (Station OA)Cross Beta in Air Particulate (Station 6A)Gross Beta in Air Particulate (Station 7A)Cross Beta in Air Particulate (Station IOA)-Cross Beta in Air Particulate (Station 15A)Gross Beta in Air Particulate (Station 17A)Gross Beta in'Air Particulate (Station 2IA)Gross Beta in Air Particulate (Station 29A)Gross Beta in Air Particulate (Station 35A)Cross Beta in Air Particulate (Station 00A)Gross Beta in Air Particulate (Station 00A)Gross Beta in Air Particulate (Mean Weekly Activity)Quarterly Thermoluminescent Dosimetry (First Quarter)Quarterly Thermoluminescent Dosimetry (Second Quarter)Quarterly Thermoluminescent Dosimetry (Third Quarter)Quarterly Thermoluminescent Dosimetry (Fourth Quarter)Mean Quarterly Thermoluminescent Dosimetry~Pa e 6 7 53 50 55 56 57 58 59 60 61 62 63 60 65 80 85 86 87 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 RADIOLOGICAL MONITORING 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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TABLE II 19$7 COLLECTION SCHEDULE Collection Site//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 Air Particulates Airborne Radioiodine Domestic Fresh Drinking Meats Milk~Ve etation Groundwater Water Surface Water//00A, Trailer Park at Wintersburg

//00A, APS El Mirage Office~//46, McArthur's Farm 807, Adam's Residence 808, Gavette residence 809, Glover residence//50, Cordell Baisley Dairy//5l, Butler Dairy//52, Cambron Farm//53, Kerr Dairy u>0, SI ousen Dairy P)5, Al Lueck, 3r.Dairy sM AA AA AA TABLE ll (Cont.)1987 COLl.ECTlON SCHEDULE Collection Site 856, Hamstra 82 Dairy ll57, Well 27ddc ll53, Well 30abb 859, PVNGS Evaporation Pond ll60, P VNGS Reservoir 861, Cooley Farm 862, 3.A.Wood Co.Air Particulates Airborne Radioiodine Domestic Meats Fresh Drinking Milk~Ve etation Croondwater Water AA AA Surface Water W=Weekly M=Monthly AA=As available during growing season Q=Quarterly 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 Milk and 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 f ects 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 aration1.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 e 55%with a background of less than 0.1 cpm.5.8 Low Back round Scintillation Counter 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 fifty samples.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).V Counting efficiency (as counts per disintegration).

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 (e Xt)Numerical constant to convert disintegrations per minute to picocuries.

Decay factor to correct the activity to time of collection.

1.96 Counting time in minutes.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 LIMIT CALCULATION AND ACTUAL ANALYSIS (a)Sam le T Air Particulates Airborne Radioiodine Domestic Meats (Beef)265 m3 265 m3 265 m3 500 g 265 m3 Fresh Milk Vegetation (Citrus Fruits)Vegetation (Leafy)Groundwater Drinking Water Surface Water 1000 mls 1000 mls 1000 mls 1000 mls 1000 mls 1000 mls 1000 mls 500 g 500 g 1000 mls 1000 mls 1000 mls 2000 mls 100 g 1000 mls 2000 mls 1000 mls 2000 mls 1000 mls 1000 mls 1000 mls 3 ml 3 ml 3 ml (a)CEP data TABLE IV SAMPLE COUNTING TIMES (a)Sam le T Gamma~*'ir Particulates Airborne Radioiodine Domestic Meats (aeef)Fresh Milk Vegetation (Citrus Fruits)I Vegetation (Leafy)Groundwater Drinking Water Surface Water 100 min 100 min 100 min 100 min 100 min 100 min 100 min 100 min 8 hrs 8 hrs 8 hrs 8 hrs 8 hrs 8 hrs 8 hrs 8 hrs 8 hrs+100 min 100 min 100 min 100 min 100 min 100 min 100 min 100 min 100 min 50 min 50 min 50 min+Alkaline Leach Method Counted for 100 mins (a)CEP data TABLE V DETECTION LIMITS BY OTHER THAN GAMMA SPECTROMETRY (a)Sam le T Air Particulates Airborne Radioiodine, Fresh Milk Vegetation (Leafy)Groundwater Drinking Water C>I Surface Water 1.0 pCi/1 1.0 pCi/1 1.0 pCi/1 2.0 pCi/1 2.0 pCi/1 2.0 pCi/1 0.005 pCi/m3 0.002 pCi/m3 0.007 pCi/m3"+0.5 pCi/1 0.02 pCi/g+0.5 pCi/1 1.0 pCi/1 1.0 pCi/1 Strontium-90 0.5 pCi/1 0.5 pCi/1 0.5 pCi/1 0.5 pCi/1 Tritium 1000 pCi/1 1000 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)Energy MeV 0.130 0.537 0.605 0.622 0.662 0.765 0.811 Isoto Cerium-100 Barium-100 Cesium-130 Ru, Rh-106 Cesium-137 Zr, Nb-95 Cobalt-58 Sensitivity pCI/gm+Ve etation 0.121 0.075 0.029 0.103 0.056 0.066 0.020 Sensitivity pCI/I+Groundwater, Drinking Water and Surface Water 17 10 Sensitivity pCI/I+Fresh Milk 10 10 2 Sensitivity pci/m3+Air Particulate 0.005 0.030 0.001 0.001 0.001 0.026 0.001 0.835 1.095 1.115 1.173 1.596 Manganese-50 Iron-59 Zinc-65 Cobalt-60 0.021 0.021 0.060 0.063 Lanthanum-100 0.065 3 16 5 3 16 5 0.001 0.006 0.005 0.019 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 02/00/87 03/18/R7 03/25/87 7A 15A 6A Redline exceeded Low total flow Excessive flow rate Excessive flow rate Second uarter 1987 Date Collected Site$$Reason oe/IS/87 06/10/87 06/17/87 6A 6A IA,OOA Excessive flow rate Flow rate Redline exceeded Third uarter 1987 Date Collected 07/21/87 07/28/87 07/28/87 08/00/87 09/01/87 09/08/87 09/15/87 09/22/87 Site/E 35A IOA, 17A 35A 17A IA,17A)00A 00A IA,OA, 17A,OOA IA, 17A,OOA Reason Sampler malfunction-Loss of power ETM malfunction P um p mal f unction Redline exceeded Redline exceeded Redline exceeded Redline exceeded Fourth uarter 1987 Date Collected IO/06/87 10/27/87 10/27/87 II/ZO/87 12/29/87 Site/f IA,OA~17A~OOA IA 21A 35A IA Redline exceeded Redline exceeded ETM malfunction Redline exceeded Redline exceeded Reason 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 Second Quarter 1987 Third Quarter 1987 Fourth Quarter 1987 0.028+0.008 0.025+0.002 0.026+0.000 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 01/07/87-01/10/87 OI/IO/87-01/21/87 01/21/87-Ol/28/87 01/28/87-02/00/87 02/00/87-02/11/87 o 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/OI/87 0.000+0.002 0.029+0.002 0.039+0.002 0.038+0.002 0.033+0.002 0."020+0.002 0.013+0.002 0.018+0.002 0.022+0.002 0.032+0.002 0.021+0.002 0.017+0.002 0.022+0.002 0.000+0.002 0.030+0.002 0.002+0.002 0.037+0.002 0.032+0.002,.

0.026+0.002 0.010+0.002 0.019+0.002 0.027+0.002 0.031+0.002 0.018+0.002 0.018+0.002 0.025+0.002 0.007+0.002 0.032+0.002 0.003+0.002 0.039+0.002 0.035+0.002 0.023+0.002 0.012+0.002 0.018+0.002 0.025+0.002 0.029+0.002 0.021+0.002 0.017+0.002 0.020+0.002 0.000+0.002 0.037+0.002 0.001+0.002 0.001+0.002 0.036+0.002 0.025+0.002 0.015+0.002 0.018+0.002 0.037+0.002 0.032+0.002 0.021+0.002 0.015+0.002 0.023+0.002 0.039+0.002 0.030+0.002 0.039+0.002 0.035+0.002 0.036+0.002 0.020+0.002 0.010+0.002 0.019+0.002 0.026+0.002 0.020+0.002 0.020+0.002 0.015+0.002 0.020+0.002 0.001+0.002 0.032+0.002 0.000+0.002 0.035+0.002 0.036+0.002 0.027+0.002 0.013+0.002 0.018+0.002 0.025+0.002 0.020+0.002 0.018+0.002 0.015+0.002 0.020+0.002 0.003+0.002 0.030+0.002 0.001+0.002 0.033+0.002 0.030+0.002 0.020+0.002 0.013+0.002 0.018+0.002 0.028+0.002 0.020+0.002 0.016+0.002 0.015+0.002 0.021+0.002 TA E VII (Cont.)GROSS BETA IN AIR PARTICULATE DATA (Ci/m3 FIRST UARTER 1987 Collection Period Station 21A Station 29A Station 35A-Station.OOA Station 00A Vfeekly Mean Gross Beta Activities

+Standard Deviation of the Mean 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-'2/25/87 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 0.000+0.002 0.030+0.002 0.002+0.002 0.000+0.002 0.036+0.002 0.027+0.002 0.0 I 0+0.002 0.019+0.002 0.025+0.002 0.037+0.002 0.020+0.002 0.015+0.002 0.022+0.002 0.000+0.002 0.033+0.002 0.002+0.002 0.039+0;002 0.037+0.002 0.028+0.002 0.010+0.002 0.019+0.002 0.025+0.002 0.036+0.002 0.019+0.002 0.015+0.002 0.022+0.002 0.039+0.002 0.032+0.002 0.000+0.002 0.035+0.002 0.036+0.002 0.023+0.002 0.010+0.002 0.016+0.002 0.026+0.002 0.031+0.002 0.016+0.002 0.016+0.002 0.022+0.002 0.002+0.002 0.033+0.002 0.000+0.002 0.037+0.002 0.035+0.002 0.025+0.002 0.017+0.002 0.021+0.002 0.023+0.002 0.036+0.002 0.019+0.002 0.013+0.002 0.021+0.002 0.001+0.002 0.026+0.002 0.003+0.002 0.032+0.002 0.027+0.002 0.026+0.002 0.018+0.002 0.018+0.002 0.027+0.002 0.025+0.002 0.019+0.002 0.015+0.002 0.019+0.002 0.003+0.002 0.032+0.003 0.002+0.002 0.037+0.003 0.030+0.003 0.025+0.002 0.010+0.002 0.018+0.001 0.026+0.000 0.030+0.005 0.019+0.002 0.016+0.001 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 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 06/10/87-06/17/87 06/17/87-06/20/87 06/20/87-07/01/87 0.020+0.002 0.025+0.002 0.020+0.002 0.026+0.002 0.023+0.002 0.020+0.002 0.029+0.002 0.027+0.002 0.026+0.002 0.020+0.002 0.022+0.002 0.026+0.002 0.022+0.002 0.020+0.002 0.030+0.002 0.026+0.002 0.020+0.002 0.026+0.002 0.026+0.002 0.031+0.002 0.028+0.002 0.029+0.002 0.022+0.002 0.019+0.002 0.023+0.002 0.022+0.002 0.018+0.002 0.030+0.002 0.023+0.002 0.023+0.002 0.020+0.002 0.020+0.002 0.031+0.002 0.030+0.002 0.029+0.002 0.017+0.002 0.023+0.002 0.022+0.002 0.019+0.002 0.026+0.002 0.026+0.002 0.020+0.002 0.026+0.002 0.025+0.002 0.030+0.002 0.025+0.002 0.029+0.002 0.028+0.002 0.020+0.002 0.027+0.002 0.026+0.002 0.020+0.002 0.028+0.002 0.026+0.002 0.020+0.002 0.023+0.002 0.026+0.002 0.028+0.002 0.025+0.002 0.030+0.002 0.020+0.002 0.019+0.002 0.021+0.002 0.026+0.002 0.019+0.002 0.028+0.002 0.027+0.002 0.027+0.002 0.025+0.002 0.023+0.002 0.028+0.002 0.020+0.002 0.031+0.002 0.023+0.002 0.020+0.002 0.020+0.002 0.021+0.002 0.018+0.002 0.025+0.002 0.021+0.002 0.025+0.002 0.023+0.002 0.020+0.002 0.029+0.002 0.026+0.002 0.030+0.002 0.023+0.002 0.020+0.002 0.026+0.002 0.023+0.002

++Invalid sample T VIII (Cont.)GROSS BETA IN AIR PARTICULATE DATA (Ci/m>3 SECOND UARTER1987 Collection Period Station 21A Station 29A Station 35A Station 00A Station 00A Weekly Mean Gross Beta Activities

+Standard Deviation of the Mean 00/01/87-'00/08/87 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 06/10/87-06/17/87 06/17/87-06/20/87 06/20/87-07/01/87 0.023+0.002 0.026+0.002 0.025+0.002 0.020+0.002

'0.025+0.002 0.020+0.002 0.031+0.002 0.025+0.002 0.028+0.002 0.023+0.002 0.020+0.002 0.020+0.002 0.023+0.002 0.019+0.002 0.027+0.002 0.025+0.002 0.020+0.002 0.026+0.002 0.020+0.002 0.030+0.002 0.028+0.002 0.030+0.002 0.023+0.002 0.023+0.002 0.020+0.002 0.021+0.002 0.021+0.002 0.023+0.002 0.025+0.002 0.026+0.002 0.025+0.002 0.025+0.002 0.027+0.002 0.023+0.002 0.031+0.002 0.027+0.002 0.018+0.002 0.023+0.002 0.020+0.002 0.019+0.002 0.027+0.002 0.026+0.002 0.020+0.002 0.025+0.002 0.027+0.002 0.029+0.002 0.025+0.002 0.028+0.002 0.020+0.002 0.019+0.002 0.020+0.002 0.020+0.002 0.018+0.002 0.025+0.002 0.025+0.002 0.020+0.002 0.020+0.002 0.022+0.002 0.029+0.002 0.030+0.002 0.028+0.002 0.025+0.002 0.023+0.002 0.020+0.002 0.022+0.002 0.020+0.001 0.027+0.002 0.025+0.002 0.025+0.001 0.025+0.001 0.025+0.001 0.029+0.001 0.026+0.002 0.029+0.001 0.020+0.002 0.020+0.002 0.020+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 07/07/87-07/10/87 07/10/87-07/21/87 07/21/87-07/28/87 07/28/8?-08/00/87 08/00/87-08/II/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 0.027+0.002 0.023+0.002 0.021+0.002 0.019+0.002 0.020+0.002 0.026+0.002 0.018+0.002 0.026+0.002 0.030+0.'002'.026+0.002 0.028+0.002 0.021+0.002 0.020+0.002 0.020+0.002 0.018+0.002 0.025+0.002 0.018+0.002 0.025+0.002 0.032+0.002 0.035+0.002 0.037+0.002 0.025+0.002 0.028+0.002 0.021+0.002 0.019+0.002 0.017+0.002 0.021+0.002 0.026+0.002 0.020+0.002 0.028+0.002 0.032+0.002 0.033+0.002 0.026+0.002 0.038+0.002 0.033+0.002 0.028+0.002 0.022+0.002 0.020+0.002 0.022+0.002 0.020+0.002 0.020+0.002 0.016+0.002 0.026+0.002 0.033+0.002 0.029+0.002 0.027+0.002 0.037+0.002 0.027+0.002 0.028+0.002 0.022+0.002 0.020+0.002 0.020+0.002 0.025+0.002 0.019+0.002 0.029+0.002 0.031+0.002 0.033+0.002 0.020+0.002 0.037+0.002 0.028+0.002 0.031+0.002 0.023+0.002 0.020+0.002 0.023+0.002 0.025+0.002 0.026+0.002 0.017+0.002 0.020+0.002 0.032+0.002 0.036+0.002 0.027+0.002 0.035+0.002 0.031+0.002 0.033+0.002 0.025+0.002 0.020+0.002 0.026+0.002 0.021+0.002 0.027+0.002 0.035+0.002 0.030+0.002

++Invalid sample.

T IX (Cont.)CROSS BETA IN AIR PARTICULATE DATA (Ci/m+3 Il"*1987Collection Period Station 21A Station 29A Station 35A Station 00A-Station 00A Weekly Mean Gross Beta Activities

+Standard Deviation of the Mean 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 08/00/87-08/11/87 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 0.027+0.002 0.023+0.002

-0.022+0.002 0.020+0.002 0.020+0.002 0.023+0.002 0.018+0.002 0.032+0.002 0.031+0.002 0.035+0.002 0.025+0.002 0.035+0.002 0.031+0.002 0.029+0.002 0.021+0.002 0.020+0.002 0.020+0.002 0.023+0.002 0.020+0.002 0.016+0.002 0.027+0.002 0.030+0.002 0.030+0.002 0.029+0.002 0.000+0.002 0.031+0.002 0.031+0.002 0.029+0.002 0.020+0.002 0.026+0.002 0.018+0.002 0.028+0.002 0.030+0.002 0.038+0.002 0.026+0.002 0.033+0.002 0.027+0.002 0.030+0.002 0.022+0.002 0.016+0.002 0.017+0.002 0.019+0.002 0.025+0.002 0.018+0.002 0.026+0.002 0.027+0.002 0.026+0.002 0.037+0.002 0.020+0.002 0.031+0.002 0.022+0.002 0.019+0.002 0.025+0.002 0.018+0.002 0.028+0.002 0.015+0.002 0.026+0.002 0.032+0.002 0.022+0.002 0.029+0.002 0.023+0.002 0.020+0.002 0.020+0.003 0.020+0.002 0.025+0.001 0.018+0.002 0.027+0.002 0.031+0.002 0.030+0.002 0.026+0.001 0.037+0.002 0.028+0.003

++Invalid sample TABLE X GROSS BETA IN AIR PARTICULATE DATA (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 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/10/87-11/17/87 I I/17/87-I I/20/87 II/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 0.038+0.002 0.035+0.002 0.021+0.002 0.021+0.002 0.028+0.002 0.030+0.002 0.038+0.002 0.020+0.002 0.020+0.002 0.018+0.002 0.033+0.002 0.026+0.002 0.001+0.002 0.002+0.002 0.031+0.002 0.033+0.002 0.028+0.002 0.001+0.002 0.038+0.002 0.036+0.002 0.025+0.002 0.020+0.002 0.018+0.002 0.030+0.002 0.032+0.002 0.050+0.002 0.007+0.002 0.039+0.002 0.030+0.002 0.035+0.002 0.000+0.002 0.037+0.002 0.002+0.002 0.020+0.002 0.021+0.002 0.019+0.002 0.037+0.002 0.031+0.002 0.055+0.003 0.007+0.003 0.035+0.002 0.037+0.002 0.036+0.002 0.002+0.002 0.038+0.002 0.006+0.002 0.026+0.002 0.020+0.002 0.019+0.002 0.038+0.002 0.029+0.002 0.052+0.003 0.003+0.002 0.028+0.002 0.035+0.002 0.030+0.002 0.001+0.002 O.OOQ+0.002 0.039+0.002 0.029+0.002 0.030+0.000 0.018+0.002 0.036+0.002 0.025+0.002 0.002+0.002 0.000+0.002 0.029+0.002 0.030+0.002 0.038+0.002 0.039+0.002 0.003+Q.002 0.026+0.002

,0.025+0.Q02 0.018+0.Q02 0.002+0.002 0.027+0.002 0.052+0.002 0.002+0.002 0.032+0.002 0.032+0.002 0.032+0.002

++Invalid sample aSample not collected X (Cont.)GROSS BETA IN AIR PARTICULATE DATA (Ci/m3 FOURTH UARTER 1987 Collection Period Station 21A Station 29A Station 35A Station 00A Station 00A Weekly Mean Gross Beta Activities

+Standard Deviation of the Mean , 09/29/87 10/06/87 10/13/87 10/20/87 10/27/87 11/03/87 ll/10/87 II/17/87 II/20/87 12/01/87 12/08/87 12/15/87 12/22/87-10/06/87-10/13/87-10/20/87-10/27/87-11/03/87-11/10/87-11/17/87-II/20/87-12/01/87-12/08/87-12/15/87-12/22/87-12/29/87 0.00 1+0.002 0.005+0.002 0.002+0.002 0.022+0.002 0.021+0.002 0.002+0.002 0.030+0.002 0.055+0.003 0.003+0.002 0.001+0.003 0.036+0.002 0.036+0.002 0.001+0.002 0.001+0.002 0.000+0.002 0.029+0.002 0.021+0.002 0.017+0.002 0.039+0.002 0.032+0.002

.0.055+0.003 0.052+0.002 0.032+0.002

'.038+0.002 0.032+0.002-0.001+0.002 0.001+0.002 0.038+0.002 0.029+0.002 0.021+0.002 0.033+0.002 0.029+0.002++

0.008+0.003 0.001+0.002 0.028+0.002

'.035+0.002 0.031+0.002 0.039+0.002 0.053+0.002 0.002+0.002 0.026+0.002 0.018+0.002 0.016+0.002 0.038+0.002 0.031+0.002 0.051+0.003 0.052+0.003 0.037+0.002 0.030+0.002 0.036+0.002 0.036+0.002 0.031+0.002 0.018+0.002 a 0.001+0.001 0.000+0.005 0.000+0.000 0.027+0.002

-0.022+0.000 0.019+0.002.

0.037+0.003 0.030+0.003 0.050+0.005 0.005+0.000 0.030+0.000 0.030+0.003 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 Station IA 6A 7A lOA 15A 17A 21A 29A 35A 00A 00A First uarter 0.027+0.010 0.028+0.009 0.028+0.011 0.030+0.011 0.027+0.009 0.027+0.010 0.026+0.010 0.029+0.011 0.029'+0.010 0.027+0.009 0.028+0.010 0.026+0.009 Second uarter 0.020+0.002 0.025+0.000 0.025+0.005 0.025+0.003 0.025+0.003 0.025+0.000 0.020+0.003 0.025+0.003 0.025+0.003 0.020+0.003 0.025+0.003 0.025+0.003 Third uar,ter 0.020+0.005 0.025+0.006 0.027+0.006 0.026+0.006 0.026+0.006 0.027+0.005 0.027+0.005 0.026+0.006 0.027+0.007 0.028+0.006 0.020+0.006 0.020+0.006 Fourth uarter 0.029+0.008 0.031+0.007 0.030+0.009 0.035+0.010 0.035+0.010 0.035+0.007 0.030+0.010 0.038+0.009 0.037+0.011 0.035+0.008 0.036+0.012 0.030+0.009 LE XII GROSS ALPHA IN AIR PARTICULATE DATA (Ci/m>3"*1987 Collection Period 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 Station 1A Station OA Station 6A Station 7A Station 10A Station 15A Station 17A+Less than lower limit of detection (0.005 pCi/m3)

TABLE Xll (Cont.)GROSS ALPHA IN AIR PARTICULATE DATA (Ci/m3)r!" 1987 12/30/86 01/07/87 OI/Io/87 01/21/87 01/28/87 02/00/87 02/Il/87 02/18/87 02/25/87 03/oe/87 03/11/87 03/18/87 03/25/87-ol/o7/s7-OI/Io/87-01/21/87-01/28/87-02/00/87-02/I I/87-02/18/87-O2/25/87-03/00/87-03/11/87-03/18/87-O3/25/S7-oo/oi/87 Collection Period Station 2IA 0.005+0.001 Station 29A Station 35A Station OOA 0.006+0.001.Station 00A 0.005+0.001

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

BLE XIII GROSS ALPHA IN AIR PARTICULATE DATA (Ci/m3 E 1987 Collection Period 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 Station 1A Station OA Station 6A Station 7A Station 10A Station 15A Station 17A+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 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 Station 21A Station 29A Station 35A Station OOA Station 00A+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-o7/le/87-07/21/87-07/28/87-08/oo/87-os/11/87-08/18/87-08/25/87-09/01/87-09/08/87-09/15/87-09/22/87-07/07/87 07/10/87 07/21/87 07/28/87 08/oo/87 08/1 1/87 08/18/87 08/25/87 09/01/87 09/08/87 09/15/87 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 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 c 08/11/87-08/18/87 I 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 Station 2IA Station 29A Station 35A Station OOA Station 00A+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 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 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 Station IA Station OA Station 6A Station 7A Station 10A Station 15A 0.008+0.002 Station 17A 0.007+0.001

+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 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 Station 21A Station 29A Station 35A Station 00A Station 00A<<Less than lower limit of detection (0.005 pCi/m3)<<<<Invalid sample Sample not collected

.100 Figure 3 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIVITY-1987 STATION 1A.075 C3 Q..050 I-I-(3.025 13 26 V/EEK 52

.100 Figure 4 GROSS BETA IN AIR PARTICULATES NEEKLY ACTIVITY-1987 STATION 4A.075 a C3 Q..050.025 26

.100 Figure 5 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIVITY-1987 STATION BA.075 Va Vl IU CL.050 I-I-.025 26 WEEK 52

.100 Figure 6 GROSS BETA IN AIR PARTICULATES V/EEKLY ACTIVITY-1987 STATION 7A.075 LA C3 O..050 0-I-I-D.025 0 100 Figure 7 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIVITY-1987 STATION 14A.075.025 26 WEEK

.100 Figure 8 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIYITY-1987

-STATION 15A.075 00 (3 CL.OS0 0-I-I-C3.025 0 26 52

.100 Figure 9 GROSS BETA IN AIR PARTICULATES V/EEKLY ACTIVITY-1987 STATION 17A.075 C3 Q..050 0-I-C3.025 26 V/EEK 52

.100 Figure 10 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIVITY-1987 STATION 21A.075 Ch O CL.050 0-I-.I-(3.025

.100 Figure I'I GROSS BETA IN AIR PARTICULATES WEEKLY ACTIVITY-1987 STATION 29A.075 w CL.QSQ 0-I-C3.025 26 V/EEK 52

.100 Figure)2 GROSS BETA IN.AIR PARTICULATES

'IlIlEEKLY ACTIVITY-1987 STATIQN 35A.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 V/EEK 52

.100 Figure 14 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIVITY-1987 STATION 44A.075 o W C3 CL.050 0-I-I-C3.025 52 Figure 15 GROSS BETA IN AIR PARTICULATES MEAN IIEEKLY ACTIVITY 1982-1987.6 Preoperational Operational u-C3 CL.4 I-C3 Chernobyl.2 82 85 YEAR 86

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 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 Station 1A Station OA Station 6A Station 7A Station 10A Station 15A Station 17A+Less than lower limit of detection (0.007 pCi/m3)

TABLE XVI (Cont.)AIRBORNE RADIOIODINE FIRST UARTER 1987 Collection Period 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?03/11/87-03/18/87 03/18/87-03/25/87 03/25/87-00/01/87 Station 21A Station 29A Station 35A Station 00A 0.016+0.000 Station 00A+Less than lower limit of detection (0.007 pCi/m3)

LE XVH AIRBORNE-RADIOIODINE 1987 Collection Period 00/01/87-00/08/87 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 Station 1A Station OA Station 6A Station 7A Station 10A Station 15A 0.008+0.005 Station 17A+Less than lower limit of detection (0.007 pCi/m3)++Invalid sample TABLE XVH (Cont.)AIRBORNE RADIOIODINE SECOND UARTER 1987 Collection Period 00/01/87-00/08/87 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 06/10/87-06/17/87 06/17/87-06/20/87 06/20/87-07/01/87 Station 21A Station 29A Station 35A 0.012+0.005 Station 00A Station 00A+Less than lower limit of detection (0.007 pCi/m3)

LE XVIII AIRBORNE RADIOIODINE THIRD UARTER 1987 Collection Period 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 08/00/87-08/11/87 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 Station 1A Station OA Station 6A Station 7A Station 10A Station 15A 0.013+0.003 Station 17A+Less than lower limit of detection (0.007 pCi/m3)++Invalid sample TABLE XVIII (Cont.)AIRBORNE RADIOIODINE THIRD UARTER 1987 Collection Period 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 Station 21A Station 29A Station 35A Station 00A Station 00A+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 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 0.020+0.006b 0.010+0.000b

+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 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 11/20/87-12/01/87 12/01/87-12/08/87'2/08/87

-12/15/87 12/15/87-12/22/87 12/22/87-12/29/87 Station 21A Station 29A 0 009+0 000b Station 35A 0.010+0.000b Station 00A 0.013~0 00qb Station 00A+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 12/31/86-03/31/87Map Location 5 6 7 8 9 10 11 12 13 16'7 18 19 20 21 22 23 20 25 26+Missing TLD Collection Location E 30, APS Western Division Offices ENE 20 Scott-Libby School E 25, Liberty School E 20, APS Buckeye Offices ESE 15, Palo Verde SSE 35, APS Gila Bend Sub-station SE 8, Arlington School SSE 5, Gladden Residence S5, SPRR (West of Gladden)SE 5, Corner of 355th Ave.and Elliot Rd.ESE 5, Corner of 339th Ave.and Dobbins Rd.'5, Corner of 339th Ave., and B-S Rd.N 1, N Site Boundary NNE 2, NNE Site Boundary NE 2, Site Boundary ENE 2, ENE Site Boundary E 2, E Site Boundary ESE 2, ESE Site Boundary SE 2, SE Site Boundary SSE 2, SSE Site Boundary S 3, S Site Boundary SSW 3, SSW Site Boundary W 5, 3.M.M.Parkway 4 Ward SW 5, Ward Rd.near Desert Farms WSW 5, Ward Rd.at Cattleguard SSW 0.5, Shephard farm-76-Total Exposure (mrem)21.7 22.0 19.7 22.8 19.5 26.9 26.0 23.8=29.7 29.9 I 25.2 25.1 21.9 22.0 25.5 20.0 25.9 20.0 258 25.0 23.2 22.0 23.2 27 2 TABLE XX (Cont.)UARTERL Y THERMOLUMINESCENT DOSIMETRY.12/31/86-03/31/87 Map Location 27 28 29 30 31 32 33 30 35" 38 39 00 05 06 08 09 50 Collection Location SW 2, SW Site Boundary WSW I, WSW Site Boundary W I, W Site Boundary WNW I, WNW Site Boundary NW 2, NW Site Boundary NNW I, NNW Site Boundary NW 5, Yuma Rd., Yi mile W of Belmont Rd.NNW 5, Corner of Belmont Rd.and Van Buren Rd.NNW 9, Tonopah, Palo Verde Inn Fire Station 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.ENE 5, 303rd Ave., Yi mile S of L.Buckeye N 3, Trailer Park at Wintersburg WNW 20, Harquahala Valley School N 8, Ruth Fisher School N 05, Vulture Mine Rd.School,*Wickenburg ENE 35, APS El Mirage Office, Sun City ENE 20, REMP Lab, Buckeye, Arizona Litchfield Park School Littleton School, Cashion Perr yville Hopeville Olinski Rd., 5 mile, WNW Sector Total Exposure (mrem)27.0 26.8 25.3 26.8 23.6 26.5 28.5 29.1 30.6 25.0'23.7 26.9 20.5 26.7 25.6 27.8 21.2 7.5 22.0 27.0 23.5 23.0 20.0<<Missing TLD TABLE XXI UARTERLY THERMOLUMINESCENT DOSIMETR Y SECOND UARTER 03/31/87-06/30/37Map Location I 2'10 11 12 13 IO 15 16 17 13 19 20 21 22 23 20 25 26 Collection Location E 30, APS Western Division Offices ENE 20 Scott-Libby School E 25, Liberty School E 20, APS Buckeye Offices ESE 15, Palo Verde SSE 35, APS Gila Bend Sub-station SE 3, Arlington School SSE 5, Gladden Residence S5, SPRR (West of Gladden)SE 5, Corner of 355th Ave.and Elliot Rd.ESE 5, Corner of 339th Ave.and Dobbins Rd.E5, Corner of 339th Ave., and B-S Rd.N I, N Site Boundary v NNE 2, NNE Site Boundary NE 2, Site Boundary ENE 2, ENE Site Boundary E 2, E Site Boundary ESE 2, ESE Site Boundary SE 2, SE Site Boundary SSE 2, SSE Site Boundary S 3, S Site Boundary SSW 3, SSW Site Boundary W 5, J.M.M.Parkway 4 Ward SW 5, Ward Rd.near Desert Farms WSW 5, Ward Rd.at Cattleguard SSW 0.5, Shephard farm Total Exposure (mrem)21.5 21.5 20.0 23.5 19.5 27.0 26.5 23.0 29.5 23.5 20.0 25.5 25.0 20.0 23.0 25.0 23.0 25.0 20.0 25.5 26 5 22.5 22.0 20.0 26.0 TABLE XXI (Cont.)UA RTERL Y T HER MOLUMINESCENT DOSIMETR Y SECOND UARTER 03/31/87-06/30/87 Map Location 27'29 30 31 32 33 30 35" 38 39 00 Ol 02 03 05 06 07 09 50 Collection Location SW 2, SW Site Boundary WSW 1, WSW Site Boundary W 1, W Site Boundary WNW 1, WNW Site Boundary NW 2, NW Site Boundary NNW 1, NNW Site Boundary NW 5, Yuma Rd., Yi mile W of Belmont Rd.NNW 5, Corner of Belmont Rd.and Van Buren Rd.NNW 9, Tonopah, Palo Verde Inn Fire Station 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.ENE 5, 303rd Ave., Yi mile S of L.Buckeye N 3, Trailer Park at Wintersburg WNW 20, Harquahala Valley School N 8, Ruth Fisher School N 05, Vulture Mine Rd.School, Wickenburg ENE 35, APS El Mirage Office, Sun City ENE 20, REMP Lab, Buckeye, Arizona Litchfield Park School Littleton School, Cashion Perr yville Hopevi lie Olinski Rd., 5 mile, WNW Sector Total Exposure (mrem)27.0 26.0 20.5 26.0 23.5 26.0 28.5 27.5 30.0 20.5 20.5 27.5 20.0 25.5 27.5 25.5 27.0 22.0 8.0 20.5 28.5 23.0 22.0 19.5 TABLE XXII UARTERLY.THERMOLUMINESCENT DOSIMETRY THIRD UARTER 06/30/87-09/30/87 0'ap Location 5 6 7 8 9 10 ll 12 13 10 15 16 17 18 19 20 21 22 23 20 25 26 Collection Location E 30, APS Western Division Offices ENE 20 Scott-Libby School E 25, Liberty School E 20, APS Buckeye Offices ESE 15, Palo Verde SSE 35, APS Gila Bend Sub-station SE 8, Arlington School SSE 5, Gladden Residence S5, SPRR (West of Gladden)SE 5, Corner of 355th Ave.and Elliot Rd.ESE 5, Corner of 339th Ave.and Dobbins Rd.E5, Corner of 339th Ave., and B-S Rd.N 1, N Site Boundary NNE 2, NNE Site Boundary NE 2, Site Boundary.ENE 2, ENE Site Boundary E 2, E Site Boundary ESE 2, ESE Site Boundary SE 2, SE Site Boundary-SSE 2, SSE Site Boundary S 3, S Site Boundary SSW 3, SSW Site Boundary W 5, 3.M.M.Parkway dc Ward SW 5, Ward Rd.near Desert Farms WSW 5, Ward Rd.at Cattleguard SSW 0.5, Shephard farm Total Exposure (mrem)19.5 20.0 18.5 22.0 17.5 25.0 20.0 21.5 26.5 22.5 22.5 23.5 23.5 21.5 20.5 25.0 22.0 23.5 22.5 23.5 20.5 21.5 21.0 21.0 20.5 TABLE XXII (Cont.)UARTERLY THERMOLUMINESCENT DOSIMETRY THIRD UARTER 06/30/87-09/30/87 Map Location 27 28 29 30 31 32.33 30 39 00 ,.Ol 02 03 05 06 07 08 09 50 Collection Location SW 2, SW Site Boundary WSW 1, WSW Site Boundary W 1, W Site Boundary WNW 1, WNW Site Boundary NW 2, NW Site Boundary NNW 1, NNW Site Boundary NW 5, Yuma Rd., Yi mile W of Belmont Rd.NNW 5, Corner of Belmont Rd.and Van Buren Rd.NNW 9, Tonopah, Palo Verde lnn Fire Station 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.ENE 5, 303rd Ave., Yi mile S of L.Buckeye N 3, Trailer Park at Wintersburg WNW 20, Harquahala Valley School N 8, Ruth Fisher School N 05, Vulture Mine Rd.School, Wickenburg ENE 35, APS El Mirage Office, Sun City ENE 20, REMP Lab, Buckeye, Arizona Litchfield Park School Lit tleton School, Cashion Perryville Hopeville Olinski Rd., 5 mile, WNW Sector Total Exposure (mrem)26.5 20.5 20.0 20.5 21.5 23.0 27.0 25.5 28.0 23.5 21.5 25.5 22.5 22.5 25.5 23.0 25.0 20.5 7.0 21.0 25.5 22.0 19.0+Missing TLD TABLE XXIH UARTERLY THERMOLUMINESCENT DOSIMETRY"*09/30/87-12/31/87 0 Map Location 8 9 10 12 13 15'6 17 18 19 20 21 22 23 25 26 Collection Location E 30, APS Western Division Offices ENE 20 Scott-Libby School E 25, Liberty School E 20, APS Buckeye Offices ESE 15, Palo Verde SSE 35, APS Gila Bend Sub-station SE 8, Arlington School SSE 5,'Gladden Residence S5, SPRR (West of Gladden)SE 5, Corner of 355th Ave.and Elliot Rd.ESE 5, Corner of 339th Ave.and Dobbins Rd.E5, Corner of 339th Ave., and B-S Rd.N 1, N Site Boundary NNE 2, NNE Site Boundary NE 2, Site Boundary ENE 2, ENE Site Boundary E 2, E Site Boundary ESE 2, ESE Site Boundary SE 2, SE Site Boundary SSE 2, SSE Site Boundary S 3, S Site Boundary SSW 3, SSW Site Boundary W 5, 3.M.M.Parkway R Ward SW 5, Ward Rd.near Desert Farms WSW 5, Ward Rd.at Cattleguard SSW 0.5, Shephard farm Total Exposure (m rem)19.5 20.5 19.0 21.5 18.0 25.5 20.0 21.5 27.0 22.0 22.5 23.5 23.0 22.5 20.5 23.0 21.0 23.0 21.5 23.0 20.0 21.0 20.5 22.0 20.0 TABLE XXIII (Cont.)UARTERL Y THERMOLUMINESCENT DOSIMETR Y FOURTH UARTER 09/30/87-12/31/87 Map Location 27-~,28 29 30 31 32 33 30 35" 38 39 00 01 02 03 05 06 07 09 50 Collection Location SW 2, SW Site Boundary WSW 1, WSW Site Boundary W 1, W Site Boundary WNW 1, WNW Site Boundary NW 2, NW Site Boundary NNW 1, NNW Site Boundary NW 5, Yuma Rd., Yi mile W of Belmont Rd.NNW 5, Corner of Belmont Rd.and Van Buren Rd.NNW 9, Tonopah, Palo Verde Inn Fire Station 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.ENE 5, 303rd Ave., Y~mile S of L.Buckeye N 3, Trailer Park at Wintersburg WNW 20, Harquahala Valley School N 8, Ruth Fisher School N 05, Vulture Mine Rd.School, Wickenburg ENE 35, APS El Mirage Office, Sun City ENE 20, REMP Lab, Buckeye, Arizona Litchfield Park School Littleton School, Cashion Perryville Hope ville Olinski Rd., 5 mile, WNW Sector Total Exposure (mrem)25.0 23.5 23.0 20.5 21.5 23.5 20.5 26.5 22.5 22.5 26.0 22.5 23.0 25.0 20.0 25.0 20.0 6.5 21.0 27.0 23.5 20.0 18.0+Missing TLD f Figure I6 QUARTERLY THERMOLUMINESCENT DOSIMETRY FIRST QUARTER 1987 40 p 30 a 20 25$0 T M 45 50 Figure 17 QUARTERLY THERMOLUMINESGENT DOSIMETRY SECOND QUARTER 1987Lad Pn 3P LJJ a 20'0.25$0 STATION 40 45 Figure 18 QUARTERLY THERMOLUMINESCENT DOSIMETRY THIRD QUARTER 198?50 E IJJ o 20 LLI 15 20 25 45 50 Figure 19 QUARTERLY THERMOLUMINESGENT DOSIMETRY FOURTH QUARTER 1987 40 Ld p 30 LLI~20 LLI 10 15 20 25 STATION 30 35 Figure 20 MEAN QUARTERLY THERMOLUMINESGENT DOSIMETRY 1981-1987 preoperational I operational

~25~ro OC)5 81 82 8$84 85 YC 86 L4~Ve etation Human vegetation samples were collected from four local farms since no commercial companies are located in the area.The leafy vegetation samples collected during 1987 included: mustard greens and lettuce.The citrus samples included grapefruits, oranges, tangerines and lemons.Table XXIV presents Iodine-131,data for the human vegetation samples collected during 1987.No observable activity was detected in any of the samples.The results of the Gamma Spectralanalyses for all human vegetation samples is presented in Tables XXV and XXVI.No man-made Gamma emitting nuclides were detected in any of the samples.Animal vegetation samples were collected from six local farms participating in the milk survey.Types of vegetation collected included: grain, hay, haylage and silage.These samples were analyzed for Strontium-$

9, Strontium-90 and Gamma emitting nuclides.Table XXVII indicates 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 Collection Location Leafy: Cambron Garden Lettuce Mustard Greens Date Collected 01/15/87 oi/15/s7 Iodine-131 Ci/m (Wet)<0.02<O.O2 Citrus: Adams Grapefruit Lemons Oranges Lemons Oranges Grapefruit Grapefruit Lemons Tangerines Grapefruit Oranges Coole Farms Oranges Tangerines Grapefruit Grapefruit Grapefruit Oranges Grapefruit 01/15/87 01/15/87 oi/>>/s7 02/12/87 02/12/87 02/12/87 03/12/87 03/12/87 03/12/87 00/16/87 oe/16/87 Oi/15/87 01/15/87 01/15/87 02/12/87 03/12/87 03/12/87 00/16/87<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02 TABLE XXIV (Cont.)HUMAN VEGETATION 1987 Collection Location Citrus (Cont.): Butler Grapefruit Grapefruit Grapefruit Grapefruit Cambron Garden Grapefruit Tangerines Oranges Grapefruit Tangerines Oranges Grapefruit Tangerines Oranges Grapefruit Tangerines Oranges Date Collected 01/15/87 02/13/87 03/12/87 00/16/87 01/IS/87 01/15/87 01/i~/87 02/12/87 02/12/87 02/12/87 03/12/87 03/12/87 03/12/87 00/16/87 00/16/87 0O/16/87 Iodine-131 Ci/m (Wet)<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02<0.02 TABLE XXV VEGETATION (Leaf)GAMMA SPECTROMETRY 1987 Collection Location Date Collected Ba-100 Co-60 0.073 0.063 i/m (wet)Co-58 Mn-50 Ru,Rh-106 Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-100 Fe-59 0.017>>0.021>>0.103>>0.060>>0.066>>0.056>>0.029>>0.121>>0.021>>Cambron Garden Lettuce Mustard Greens oi/i5/87 01/15/87"Lower limit of detection I->><<Less than lower limit of detection I TABLE XXVI VEGETATION Citrus)GAMMA SPECTROMETRY 1987 Collection Location Adams Grapefruit Lemons Oranges Lemons Oranges Grapefruit Grapefruit Lemons Tangerines Grapefruit Oranges Date Collected oi/is/s 7 01/15/87 oi/i5/87 02/12/87 o2/i2/sj o2/i2/87 03/12/87 03/12/87 o3/i2/8 7 o4/i6/sj o4/i6/sj Ba-140 0.075>>i/m (wet)Co-60 Co-58 Mn-54 Ru,Rh-106 2n-65 Zr,Nb-95 Cs'-137 Cs-134 Ce-144 Fe-59 0.063>>0.017>>0.021>>0.143>>0.060>>0.066>>0.056>>0.029>>0.121" 0.021>>>>>>~Coole Oranges Tangerines Grapefruit Grapefruit Grapefruit Oranges Grapefruit ol/i5/sj oi/is/sj 01/15/87 02/12/87 03/12/87 03/12/87 o4/i6/sj'Lower limit of detection'Less than lower limit of detection TABLE XXVI (Cont.)VEGETATION (Citrus)GAMMA SPECTROMETRY 1987 Collection Location Butler Grapefruit Crapefruit Grapefruit Grapefruit I I Cambron Carden Oranges Tangerines Grapefruit Crapefruit Tangerines Oranges Grapefruit Tangerines Oranges Grapefruit Tangerines Oranges Date Collected 0 II 15I87 02/13/87 03/12/87 o4/i6/s7 01/15/87 oi/is/s7 OI/15/87 02/12/87 02/12/87 02/12/87 03/12/87 03/12/87 03/12/87 04/16/87 o4/i6/s7 04/16/87 Ba-140 0.075" Ci/m (wet)Co-6Q Co-58 Mn-54 Ru,Rh-106 Zn-65 Zr,Nb-95 Cs-137 Cs-134 Ce-144 Fe-59 0.063>>0.017>>0.021>>0.143>>0.060>>0.066>>0.056" 0.029>>0.121>>0.021>>kk kk>>Lower limit of detection~~Less than lower limit of detection TABLE XXVII ANIMAL VEGETATION 1987 Collection Location Kerr T e Grain Hay Grain Hay Grain Hay Grain Hay Grain Hay Date Collected 01/16/87 01/16/87 02/13/87 02/13/87 03/13/87 03/13/87 00/17/87 00/17/87 os/15/87 os/15/87 Strontium-89 (o.i ci/)+Strontium-90 (o.os ci/)+Butler Grain Haylage Hay Grain Haylage Hay Grain Haylage Hay Grain Haylage Hay Grain Haylage Hay 01/16/87 01/16/87 Oi/16/87 02/13/87 02/13/87 02/13/87 03/13/87 03/13/87 03/13/87 00/17/87 00/17/87 00/17/87 05/15/87 05/15/87 os/ls/87+Lower limit of detection++Less than lower limit of detection TABLE XXVII (Cont.)ANIMAL VEGETATION 1987 e Collection Location Lueck Grain Hay Haylage Grain Haylage Beet Pulp Hominy Corn Grain Hay Haylage Grain Hay Hayiage Grain Hay Hayiage Date Collected 01/16/87 01/16/87 01/16/87 02/13/87 02/13/87 02/13/87 02/13/87 03/13/87 03/13/87 03/13/87 00/17/87 Oe/17/87 oo/17/87 05/is/87 05/la/87.05/15/87 Strontium-89 (o.i ci/)>>Strontium-90 (0.05 Ci/)>>Hamstra II2 Grain Hay Grain Hay Grain Hay Grain Hay Grain Hay Oi/i6/87 01/16/87 02/13/87 02/13/87 03/13/87 03/13/87 00/17/87 00/17/87 os/is/87 os/15/87>>Lower limit of detection>>>>Less than lower limit of detection ,

TABLE XXVII (Cont.)ANIMAL VEGETATION 1987 Collection Location Baisiey Grain Hay Grain Hay Grain Hay Grain Hay Grain Hay Date Collected 01/16/87 oi/i6/s7 02/13/87 02/13/87 03/13/87 03/13/87 00/17/87 00/17/87 O5/i5/S7 o5/i5/s7 Strontium-89 (o.i ci/)+Strontium-90 (o.o5 ci/)Skousen Hay Silage Grain Hay Silage Grain Hay Silage Grain Hay Silage Grain Hay Silage 01/16/87 oi/16/87 02/1,3/87 02/13/87 02/13/87 03/13/87'3/13/87 03/13/87 00/17/87 00/17/87 00/17/87 o5/i5/s7 05/15/87 05/15/87+Lower limit of detection++Less than lower limit of detection TABLE XXVIII ANIMAL VEGETATION GAMMA SFECTROMETRY 1987 Ci/(wet)Collection Location Date Collected Oi/16/87 01/16/87 02/13/87 02/13/87 03/13/87 03/13/87 00/I7/87 oo/17/87 05/15/87 os/is/87 Grain Hay Grain Hay Grain Hay Grain Hay Grain Hay Kerr I I Butler 01/16/87 OI/16/87 oi/i6/87 02/13/87 02/13/87 02/13/87 03/13/87 03/13/87 03/13/87 OO/I7/87 OO/17/87 00/17/87 os/is/87 os/ls/87 05/15/87 Grain Haylage Hay Grain Haylage Hay Grain Haylage Hay Grain Haylage Hay Grain Haylage Hay<<Lower limit of detection k>>Less than lower limit of detection Ba-100 Co-60 Co-58 Mn-5O Ru,Rh-1 06 Zn-65 Zr,Nb-95 0.075>>0.063>>0.017>>0.021>>0.103>>0.060>>0.066>>kk kk Cs-137 Cs-130 Ce-100 Fe-59 0.056>>0.029>>0.121>>0.021>>kk kk TABLE XXVlll (Cont.)ANIMAL VEGETATION GAMMA SPECTROMETRY 1987 Collection Location Lueck Grain Hay Haylage Grain Haylage Beet Pulp Hominy Corn Grain Hay Haylage Grain Hay Haylage Grain Hay Haylage Date Collected oi/i6/s7 oi/i6/87 oi/i6/s7 02/13/87 02/13/87 02/13/87 02/13/87 03/13/87 03/13/87 03/13/87 oo/17/87 00/I7/87 oo/I7/87 05/15/87 05/15/87 05/IS/87 Ba-100 0.075>>Co-60 Co-58 0.063>>0.017>>Ci/(wet)Mn-50 Ru,Rh-1 06 Zn-65 0.021>>0.103>>0.060>>Zr,Nb-95 Cs-137 0.066>>0.056>>Cs-130 0.029" Ce-140 Fe-59 0.121>>0.021>>Hamstra S2 Grain Hay Grain Hay Grain Hay Grain Hay Grain Hay 01/16/87 OI/16/87 02/13/87 02/13/87 03/13/87 03/13/87 00/I7/87 00/17/87 os/is/s7 05/15/87~Lower limit of detection~~Le>>than lower limit of detection TABLE XXVIII (Cont.)ANIMAL VEGETATION GAMMA SPECTROMETRY 1987 I C)Ql l Collection Location~Baisle Grain Hay Grain Hay Grain Hay Grain Hay Grain Hay Date Collected Ol/16/87 01/16/87 02/13/87 02/13/87 03/13/87 03/13/87 oo/17/87 oo/17/87 o5/i5/s7 05/15/87 i/(wet)Ba-IOQ Co-60 Co-58 Mn-50 Ru,Rh-106 Zn-65 Zr,Nb-95 0.075>>0.063>>0.017>>0.021>>0.143>>Q.060>>0.066>>kk Cs-137 Cs-130 Ce-100 Fe-59 0.056>>0.029>>0.121>>0.021>>Skousen Hay Silage Grain Silage Hay Grain Hay Silage Grain Hay Silage Grain Hay Silage oi/i6/s7 01/16/87 02/13/87 02/13/87 02/13/87 03/13/87 03/13/87 03/13/87 00/17/87 OO/17/87 00/17/87 05/15/87 O5/15/S7 05/15/87 Ik 0.199+0.038a kk>>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.

TABLE XXIX DRINKING WATER 1987 0 Collection Location McArthur Residence Date Collected Oi/i5/S7a 02/12/87a 03/12/87a 00/16/87a 05/10/87a 06/18/87a 07/IO/87b 08/ll/87b O9/i5/S7b 10/13/87b ll/10/87b 12/15/87b 10.0+0.8<6.9 3.7+5.0 5.7+0.8<5.2 6.6+3.1<2.0 2.8+0.0 6.6+1.3<0.9 7.7+1.3 5.6+1A<5.2 8.7+1.1<0.68<0.39<0.73<0.38<0.28<0.75<IOOO 0<390 060<1320 Ci/1 Gross Alpha Gross Beta Strontium-90 Tritium 1.0+2.0+0 5%1000++Lower limit of detection (CEP)"+Less than lower limit of detection aCEP data bASU data Not determined

-102-TABLE XXIX (Cont.)DRINKING WATER 1987 Collection Location Glover Residence Date Collected 01/15/87 a 02/12/87a Ci/I Gross Alpha Gross Beta Strontium-90 Tritium 1.0+2.0+0.5+1000+IA+1.0 03/12/87a oe/16/87a 05/10/87a 06/18/87a 07/10/87b 08/11/87b 09/15/87b 10/13/Sjb ll/10/87b 12/15/87b 1.5+I.I I.I+1.0 7.6+0.6 3.3+0.0 0.0+3.7 1.7+2.6 2.0+0.5 2.0+OA 2.7+0.9<0.7 6.2+1.3 5.8+1.6<0.6 5.3+1.0<0.81<0.36<0.75<0.31<0.28 0.67<1030<300<390<050<1300+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 Collection Location Gavette Residence Date Collected Oi/i5/S7a 02/12/87a 03/12/87a 00/16/87a 05/ie/87a 06/18/87a 07/10/87b 08/11/87b 09/15/87b io/i3/s7b ii/io/s7b 12/15/87b Gross Alpha 1.0+<1.3 0.0+5.2<5.5<2.3<2.5 Ci/1 Gross Beta 2.0+2.0+0.5 3.0+0.5 2.0+0.5 0.0+1.3<0.8 0.8+1.0 6.8+1.5<5.0 7.3+1.3 Strontium-90 0 5+<0.81<0.36 0.75 0.31 0.28 0.80 Tritium 1000%<103 390<060<1310+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 Collection Location McArthur Residence Date Collected Ol/15/87a 02/12/87a 03/12/87a O4/i6/87a 05/14/87a O6/iS/87a O7/i4/87b os/11/s7b O9/i5/S7b 10/13/87b ii/io/s7b 12/i5/87b<17<2 4<2.6<2 4 d d<5.5<4.6/<2.9<2.7 d d<2.4<20 d<6.2<9.1<I I<2.5<2.3<2.2<I I<2.7<2.5<13<26<24<2.2<2.4<8.7<2.6<2.6<2.5<20<20<23<22<5.3<4.9<5.0<4.6<4.0/<2.6<3.9/<2.5<4.8/<2.7<4.0/<2.8<2.5<2.4<2.4<2.1<2.2<2.5<2.6<2.3<19<18<20<20<5.1<5.1<4.8<4.9<4,4<3.5<4.2<3.0 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 4>>5>>3>>2>>IO>>16>>IO>>2>>10>>I 8>>3>>I>>>>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 Collection Location Date Collected Ba-100 Co-60 Co-58 Mn-50 Qk 5>>3>>Ru,Rh-106 IO>>Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-IN Fe-59 1-131 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 08/II/87b O9/i5/S7b IO/i3/S7b ll/10/87b I2/15/87b<16<2.5<2.7<2.6<10<2.8<2.2<2.3<11<2A<2.6<2.3<13<2.6<2.3<2.5<8.2<2.0<1.9<1.9<10<2.5<2.3<2.5<22<22<19<23<5.9<0.8<0.9<5.1<0.2<5.6<0.2/<3.1<1.2/<2.5<0.2/<2.5<O.l/<2.0<3.6/<2.1<0.6/<2.0<2.5<2.5<2.5<2.5<2.1<2.8<2.1<2.3<2.2<2A<2.0<2.6<20<6.7<8.0<19<0.9<3.8<19<51<OA<21<5.1<0.9<20<3.9<2.7<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 Collection Location Date Collected Ba-100 Co-60 Co-58 Mn-50 Ru,Rh-1 06 0" 5>>3>>2<<lo>>Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-100 Fe-59 1-131 16>>10<<-2>>IQ<<18" 3>>I>>I 0 I Gavotte Residence Oi/iS/87a O2/i2/S7a 03/12/87a O0/i6/S7a 05/10/87a O6/iS/87a O7/i0/S7b os/il/s7b o9/is/87b 10/13/87b 11/io/s7b iz/is/s7b<11<22<2.2<1.8<7.8<1.9<I.s"<1.9<17<2.5<2.6<20<10-<2.7<2.0<2.2<2.3<2.3<2.1<I I<2.6<2.0<2.6<20<21<2Q<17<0.8<0.7/<2.8<0.9<0.5/<2.0<0.0<0.2/<2.6<6.7<0.8/<3.0<4.0<3.6/<2.0<0.5<3.1/<2.0<2.2<2.7<20<2.5<2.3<2.1<2.1<20<2.2<2.0<2.1<1.8<19.<18<19<5.1<5.1<0.8<21<19<0.0<0.Q<20<5.0<9.1<30<5.0<3.5<0.2<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 Collection Location 27ddc Date Collected 02/12/87a 05/li/87a 08/11/87b 11/1O/S7b Gross Alpha 1.0+0.2+3.1 Ci/I Gross Beta 2.0+0.6+5.7<5.3 Strontium-90 0 5+<OA9<0.31 Tritium 1000%300<1320 30abb 02/12/87a 05/ie/87a 08/II/87b 11/1O/S7b O.l+0.5 3.0+7.7<5.5<OA6<0.32<300<1320+Lower limit of detection (CEP)<<+Less than lower limit of detection (CEP)aCEP data bASU data cNot determined

-109-TABLE XXXII GROUNDWATER GAMMA SPECTROMETRY 1987 Collection Location Date Collected Ba-100 Co-60 Co-58 Mn-50 0>>5>>3>>2>>Ru,Rh-l 06.Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-100 Fe-59 1-131 10>>16" lo>>2>>10>>18>>3>>I>>27ddc O2/12/S?a osliuls?a os/ii/s?b ii/io/s?b<10<13<2.5<2.3<2.3<2.8<3.0<2.9<25<0.1<5.9<0.1/<2.7<0.9/<3.0<2.3<2.9<2.3<2.2<19<21<5.5<4.1<6.1<0.9 30abb I O2/i2/S?a 05/10/8?a os/Ii/s?b ii/io/s?b<12<2.2<2.3<2.0<2 0<2.3<2.3<21<5.1<5.2<0.0/<2.0<0.2/<2.5<2.7<20<2.2<2.2<19<22<5.5<5.0<0.0<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 XXXIII through 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 Oi/OS/S7a Oi/15/S7a oi/i5/s7b 01/22/87a Ol/29/87a O2/O5/S7a 02/12/87a 02/12/87b 02/19/87a 02/26/87a O3/O5/S7a 03/12/87a 03/12/87b 03/19/87a 03/26/87a 00/02/87a 00/09/87a OO/16/87a 00/16/87b 00/23/87a 00/30/87a O5/O7/S7a 05/IO/87a O5/ie/87b Gross Al ha 26+5<5.7<3.1 3.9+9.1<0.2 Gross Beta 23+1 16+2 15+2 20+2 19+2 Iodine-131

<0.5<0.5 2.2+0.1<0.5<Q.5<o.5<Q.5<1.8<Q,5<o.5<0.5-<0.5, 0.96+0.05<Q.5<0.5<p.5<p.5<0.5 0.1+0.2<0.5<0.5 6.1+1.0<0.5 8.0+0.5 Tritium<1000<1000<560 ,<1000<1000<1000<560<<50<570<570 Strontium-89

<0.39<0.20<0.39<0.00<0.08 Strontium-90

<0.35<0.18<0.27<0.35<0.36+Not Determined aCEP data bASU data TABLE XXXIII (Cont.)SURFACE WATER 1987 PVNGS RESERVOIR Radiochemical Anal sis (Ci/I)Collection

.Date O5/21/S7a 05/28/87a O6/OO/87a.O6/li/S7a 06/18/87a 06/18/87b O6/25/S7a 07/01/87b.07/07/87b 07/10/87b 07/21/87b 07/28/87b os/oc/87b os/ii/s7b 08/18/87b os/25/s7b o9/oi/s7b 09/08/87b o9/15/s7b 09/22/87 09/29/87b 10/06/87b io/i3/s7b 10/20/87b 10/27/87b Gross Al ha<5.9<0.8<3.8<3A<10<10<7.8 0.2+10 3.3+1.3<8.8<9.2<8.6<9.2<0.2<0.2<7.2<8.5<8.1<8.8 Gross Beta 18+2 16+3 17+3 18+3 18+2 20+3 19+2 12+2 15+2 18+2 18+2 10+2 19+2 16+2 18+2 17+2 16+2 19+2 18+2 Iodine-131

<0.5<0.5 1.8+1.1 2.3+1.7<0.5 3.1+0.3 3.0+1.6 5.9+0.5 0.5+0.0 10.6+0 5 6.6+0.3 6.0+0.3 5.0+0.3 2.5+0.1 11.0+1.0 25.0+3.0 9.5+1.0 0.0'+1.3 6.0+0.6 5.0+OA 5.2+0.0 3.8+0.5 3.0+0.2 3.5+0.3 1.9+0.2 Tritium<520<800<300<690<690 Strontium-89

<0.07<0.23<0.27 1.5<3.1<1.3 I:2<0.87<0.75<0.70 I.O<0.93<0.89<0.5o<0.50<0.00<0.00<0.00<0.55 Strontium-90 0.35+0.02<0.23<0.27<0.58<IA<0.71<0.77<0.65<0.71<0.07<0.63<0.66<0.79<OAO<0.08<0.30<0.35<0.38<0.03+Not Determined aCEP ta bA a TAB XXXIII (Cont.)S CE WATER 1987 PVNGS RESERVOIR Radiochemical Anal sis (Ci/I), Collection Date 11/03/87b 11/10/87b 11/17/87b 11/20/87b 12/01/87b 12/08/87b 12/15/87b 12/22/87b 12/29/87b Gross Al ha<7+5<8.1 II-<10<5.8<5.6<2.9<2.9.<3.8 Gross Beta 19+2 18+2 20+2 20+2 20+2 19+2 18+2 15+2 21+2 Iodine-131

<0.55 8.7+0.6 5.0+0.3 2.5+0.2 1.8+0.1 0.7+0.0 0.8+0.3 12.5+0.7 7.5+0.6 Tritium<1300<790 Strontium-89

<0.51<0.50<0.06 0.52+0.05<0.00<0.30<0.37<0.92<0.81 Strontium-90

<0.07<0.38<0.39<0.37<0.39<0.25<0.31<0.83<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 Oi/i5/S7a oi/i5/s7b 01/22/87a 01/29/87a O2/O5/87a 02/12/87a 02/12/87b 02/19/87a 02/26/87a O3/O5/S7a 03/12/87a 03/12/87b 03/19/87a 03/26/87a 00/02/87a OO/09/87a 00/16/87a 00/I6/87b 00/23/87a OO/30/87a OS/O7/S7a 05/IO/87a 05/IO/87b 52+07<36<18<28<52 120+3 130+6 IIO+10 160+7 170+7<0.5<0.5<0.52<0.5<0.5<0.5<0.5<2.0 p.5 p.5 p.5 Q.5 0.$5 p,5 0.5<0.5<0.5 2.8+1.7 0.58+0.03~<0.5<0.5 Q.5 0.5 0.90+0.06 3309+920 2059+1217 1570+220 3791+1297 3091+1270 3333+1313 1610+230 2710+380 1800+290 1080+210<0.39 0.20 OA2<0.03 0.55 0.92+0.06 0.38+0.02 0.32 0.51+0.03 0.51+0.00+Not Determined aCEP data bAa TABL XXXIV (Cont.)S CE WATER 1987PVNGS EVAPORATION POND Radiochemical Anal sis (Ci/I)Collection Date O5/2i/S?a 05/28/87a 06/00/8?a 06/11/8?a 06/ls/87a 06/18/87b 06/25/87a o?/oi/8?b 07/07/87b 07/ie/8?b 07/21/87b o?/28/8?b 08/00/8?b~os/ii/8?b os/is/s?b 08/25/8?b o9/oi/s?b 09/08/87b O9/i5/S?b 09/22/8?b 09/29/87b io/o6/s?b Io/13/87b lo/2o/s?b 10/27/87b Gross Al ha<53<06<07<130<100<130<55<30<33<88<91<95<220<110<77<130<100<220<250 Gross Beta 200+8 220+20 210+20 190+Io 210+9 190+7 190+12 210+8 220+9 210+9 230+9 220+9 230+8 270+10 220+10 230+10 220+10 230+10 220+10 Iodine-131

<0.5<0.5<0.5<0.5 1.6+I.O 1.1+0.01<0.5<1.0 I.I+0.1 0.73+0.00 7.7+0.0 1.2+0.1 0.3+0.2 1.08+0.06 3.8+0.0<1.0 1.8+0.3 2.1+0.0 1.3+0.1 1.2+O.l<1.0<1.1<0.61 2.6+0.2<0.6 Tritium 1320+190 1590+60<1020 1050+50<1030 1620+60<900 1020+30 1020+50 1150+00<810 1020+00 1000+00<920 1190+00 1290+00 850+30 780+30 990 Strontium-89

<OA3<0.36<0.35 1.3 1.0<1.0 1.2<0.85<0.77 0.76<1.1<0.95<0.80 0.58 0.60<0.55<OA9<0.00 0.59 Strontium-90 0.50+0.03 0.59+0.00 0.33+0.02<0.56<0.72<0.85<0.83<0.58<0.65<0.55<0.65<0.69<0.70 0.59+0.05 0.66+0.05 0.67+0.05 0.67+0.05 0.71+0.05 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 11/03/87b 11/10/87b II/17/87b II/20/87b 12/01/87b 12/08/87b 12/15/87b 12/22/87b 12/29/87b Gross Al ha<170<260<270<230<70<95<27<26<17 Gross Beta250+10 200+10 230+9 220+8 260+10 250+10 220+10 210+10 230+10 Iodine-131 1.0+0.08<0.52 0.70+0.05<0.68<0.50<0.96<0.68 0.99+0.6 1.2+0.1 Tritium 660+20 980+00 890+30 890+30 1090+00 820+30 820+30 1100+00 Strontium-89

<0.59<0.50<0.08<0.05<0.02<0.02<0.02<1.0<0.88 Strontium-90

<0.00 0.97+0.06 0.76+0.05 0.50+0.03 0.58+0.00 0.59+0.00 0.97+0.06<0.81<0.81+Not Determined aCEP data bASU data E XXXV SURFACE WATER (COMPOSITE) 1987 Collection Location PVNGS Reservoir Composite Period 3anuary February March April May 3une Gross Alpha 1.0+<1.0<1.0 2.0+1.0<1.0<1.0<1.0 Gross Beta 2.0+6.0+0.6 6.7+0.6 6.6+0.7 3.0+0.5 6.6+0.6 3.9+0.5 Ci/I Strontium-89 1.0+1.0 1.0 1.0<1.0 I.O 1.0 Strontium-90 0 5%<0.5<0.5<0.5<0.5<0.5<0.5 Tritium 1000+<1000<1000<1000<1000<1000<1000 PVNGS Evaporation Pond 3anuary February March April May 3une<1.0<1.0 1.7+1.0<1.0<1.0 1.5+0.9 10.9+0.8 10.0+0.8 10.7+0.8 8.1+0.7 8.0+0.6 16.?+0.7 1.0 I.O 1.0<1.0 1.0 1.0<0.5<0.5<0.5<0.5<05<0.5 2021+1282 1082+899 3071+1190 2739+908<1000<1000+Detection Limit NOTE: All data contained on this table was supplied by CEP.

TABLE XXXVI SURFACE RATER GAMMA SPECTROMETRY 1987 Collection Location Date Collected Ba-100 Co-60 Co-58 Mn-50 0>>5>>3>>Ru,Rh-106 Io" Zn-65 Zr,Nb-95 16>>10>>Cs-137 Cs-130 Ce-100 Fe-59 1-131 2>>Io>>I 8>>3>>I k I C)I PVNGS Reservoir oi/is/s7b 3anuary ozliz/s7b Februarya 03/12/87b Marcha 00/16/87b Aprila Q5/10/87b Maya o6/Is/87b 3unea o7/oi/s7b 07/07/87b o7li0/s7b 07/21/87b 07/28/87b os/o4/s7b 08/ll/87b<10<9.4<12<10<8.3<9.7<B.l<6.7<8.3<10<11<9.0<10<3.3<2.7<2.6<3.6<2.8<2.7<3.1<3A<2 7<26<2A<21<1.8<1.7<2.0 kk<2.5<2.1<2.0<2.7<2;I<2.2<1.9<2.1<1.8<2A<2.0<2.1<25<22<2A<3.0<2.6<2.0<2.7<2.2<2.2<2.5<2.2<2.2 c c c c c c c<6.8<6.0<6.0<5.8<3.8<3.8<0.8<0.1<4.8<5.1<5.7<0.9<6.7/<0.2<6.3/<3.0<6.9/<2.6<0.3/<2.9<2.9/<2.0<0.0/<2.0<0.1/<2A<3.3/<2.2<3.7/<1.9<0.1/<Z.0<0.1/<2.7<0.o/<z.s<0.0/<2.3<2.6<3.5<2.7<2A kk<2.1<2.0 kk<2.6<2.2<2.9<2.7<2.7<2.9<2.7<27<3.1<25<2.0<20<2A<20<1.9<20<2.5<19<2A<19<I.B<19<2A<19<2.3<19<2.1<20<2.0<21<23<19<7.5<0.5<6.2<0.3<5.5<3.8<5A<7.3<4.0 6.3<0.8<3.7<5.3 7.5<0.0 3.7<0.7 8.9<0,8 5A<5.0 5.0<0.8 0A<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 GAMMA SPECTROMETRY 1987 Collection Location Date Collected Ba-100 Co-60 5>>Ci/I Co-58 Mn-50 Ru,Rh-lo6 Zn-65 Zr,Nb-95 3>>2>>10" 16" 10>>Cs-137 Cs-130 10>>Ce-100 Is>>Fe-59 1-131 3>>PVNGS Reservoir (Cont.)08/18/87 08/25/87b o9/oi/s7b 09/08/87b o9/is/s7b 09/22/87b 09/29/87b io/o6/s7b 10/13/87b IO/20/87b io/27/87b 11/03/87b il/io/s7b ii/i7/S7b II/20/87b 12/Ol/87b i2/os/s7b i2/i5/S7b 12/22/87b 12/29/87b<9.7<2.6<15<34<8.9<2.6<17<0.0<9.8<2.2<9.4<2.6<9.6<2.3<9A<2 6<9.0<2.0<12<20<12<2.3<7.0<1.9<13<3.7<8.1<2.1<13<2.6<7A<2.1<9.7<2.6<9.1<2.4<II<20<12<2.2<2.3<2.2 c<3.1<3.1<25<2.3<2.5<20<3.5<3.3<30<2.5<2.5<21<2.5<2A<18<2.0<2.2<20<2.0<2.2<21<2.6<2.4<22<2.5<2.2<20<2.5<2A<22<I.s<2.0<18<3.3<0.1<31<2.0<1.8<17<2.6<2.6<22<1.6<1.9<Is<2.0<2.5<20<2.4<2.3<22<2.6<2A<29<2.3<2.5<21<0A<6A<0.7<7.8<5.0<5.0<0.6<0.8<5.6<0.6<0.8<0.0<6.6<3.3<5.3<0.2<5.2<5.0<4.6<4.9<0.1/<2.3<6.2/<3.8<0.0/<2A<6.2/<3.9<0.1/<2.0<3.7/<2.5<0.2/<2.0<0.3/<2.3<3.7/<2.3<0.7/<2.5<0.1/<2.6<3.3/<1.9<6.1/<3.7<3.3/<2.1<0.O/<2.7<3.0/<1.9<0.2/<2.1<0.5/<2.7<0.2/<2.6<0.6/<2.7<2.3<3.3<2.7<3.6<2A<2.7<2.5<2.3<2.5<2.6<2.5<2.2<3.9<2.0<2.6<2.0<2.6<2.6<3.8<2.8<2.2<2.9~<2.2<3.2<2.5<2.0<2.3<2.2<2A<2.2<2.3=<2.0<3.0<2.0<2.0<1.8<2.5<2A<2.2<2.2<19<29<18<30<21<18<19<19<20<20<19<19<29<19<22<19<20<20<19<20<5.2<6.2<0.6<6A~<5.5<5.2<0,5<4.9<5.1<5.2<0.7<3.8<6.3<3.9<5.1<0.2<5.2<5.1<5.5<0.8 II 13 7.1<5A 5A 4.9 7.0 5.8 3.7<0.6<0.8<2.5 8.3 4.2<2.7 0.3 0.8 13 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 Collection Location Date Collected Ba-100 Co-60 0>>5>>Co-58 Mn-50 Ru,Rh-106 Zn-65 Zr,Nb-95 Cs-137 Cs-130 Ce-100 Fe-59 1-131 3>>2>>10>>16>>10>>2>>Io>>ls>>3>>i>>PVNCS Evaporation Pond Ol/15/87b 3anuarya oz/12/87b Februarya 03/12/87b Marcha o0/16/s7b Apriia Os/i0/87b Maya 06/18/87b 3une o7/oi/s7b o7lo7ls7b O7/i0/S7b o7/zi/s7b o7/zs/s7b os/o0/s7b os/ii/s7b<12<I I<8.3<12 kk<9.1<7.0<7.2<8.5<8.9<11<I I<12<7.9<3.3<3.5<2.9<1.9<2.7 kk<2.2<2.2<2.7<2.5<2.6<3.0<2.7<2.9<3.0<3.0 c<2.0<2.7 c<2.0<3.0 c kk<2.0<2.0 c<2.2<2.3 c<2.0<2.1 c<2.1<2.5 c<2A<2A c<2.4<2.1 c<2.6<2.0 c<2A<2.0 c<2.6<2.3 c<2.7<2.0 c<7.6<6.0<5.0<0.0<0.5<0.2<0A<6.5<5.6<5.0<6.1<5.5<5.2<8.1/<0.2<7.3/<2.6<5.3/<2.8<3.6/<2.3<0.3/<2.5<3.5/<1.9<0.1/<z.z<0.6/<Z.7<3.8/<2A<0.0/<2.5<0.5/<2.7<0.5/<z.7<0.1/<2A<2.7<2.3<2.8<2.0<2.6<2.1<2.7<2.8<2.5<2.7<2.8<2.7<2.7<2A<2.3<2.5<1.8<2.6<1.9<ZA<2.5<2.2<2.5<2.5<2.6<2.5<20<25<23<19<21<22<20<20<19<20<20<22<19<6.0<5.8<5.8<0.1<5.1<3.9<0,5<5.5<0.9<0,5<5.8<5.8<5.1<4.9<3.9<2.0<5.8<3.3<2.7<2.6<3.0<3.2 8.5<0.1 5.3<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 Collection Location Date Collected Ba-140 Co-60 Co-58 Mn-54 5%3%Ru,Rh-106 Zn-65.Zr,Nb-95 Cs-137 10" 16<<10%2>>Cs-134 10%Ce-144 Fe-59 1-131 IS>>3<>PVNGS Evaporation Pond 08/IS/87 (Cont.)os/z5/87b 09/Ol/87 09/OS/87b 09/15/87b 09/22/87b 09/29/87b io/o6/87b io/i3/s7b-io/zo/s7b io/27/87b 11/O3/S7b ii/io/s7b ll/17/87b ll/24/87b 12/01/87b 12/08/87b iz/i5/s7b iz/2z/87b 12/29/87b<9.1<8.9<13<12<S.9<10<12<8.6<8.2<13<13<8.8<8.9<I I<15<9.7<7.6<8.6<12<10<2.6<2 4<2.7<3.0<2.5<2.2<2.9<2.5<2.5<2.4<2.7<2.5<2.8<2.8<3,7<2.9<2.3<3.0<2.7<2.1<2.5<2 4<2.5<2.3<2.2<2.5<2 4<2.5<2.2<2 4<2.8<2 4<2.3<2.4<2.9<2.6<1.8<2.7<2.3<2.0<2.3<2.3<2.4<2.1<2.3<2.5<2.6-<2.5<2.1<2.6<2.6<2.5<2.1<2.3<3 4<2.5<1.9<2.7<2.5<2.0 c<23<21<22<20<22<25<23<22<23<22<24<22<22<29<22<19<23<23<19<4.6<4.S<5.4<6.0<5.0<5.6<6.0<5.3<5.0<5.4<6.0<5.9<5.0<5.5<6.6<5.5<4.6<6.2<5.0<4.6<4.2/<2.4<4.O/<Z.6<4.6/<2.8<4.0/<2.7<4.2/<2.5<4.4/<2.8<4.7/<2.7<3.5/<2.6<4.i/<Z.4<4.4/<2.9<5.0/<2.9<4.7/<26.<4.3/<2.3<4.2/<2.5<5.8/<3.6<3.8/<2.7<3.2/<2.0<4.4/<Z.6<4.4/<2.9<3.8/<2.3<2.7<2.8<2.6<2.9<2.5<2.7<2.7<2.8<2.5<2.7<2.8<2.9<2.6<2.8<3.6<2.6<2.2<2.7<2.8<2.2<2.5<2.5<2.4<2.5<2.2<2.3<2.5<2.7<2.2<2.5<2.5<2.5<2.2<2.5<2.6<2.7<1.9<2.4<2.3<1.9<20<5.1<19<5.7<20<5.6<20<5.3<21<4.8<20<5.2<20<5.7<19<5.0<ls<4.9<20<5.9<20<5.7<20'4.9<IS<5.1<20<5.2<22<8.5<20<56<19<4.5<21<5.6<20<5.5<20<4.9 4.0<2.8<4.9<4.5<3.3<4.2<4.9<3.1<3.3<4.9<4.5<2.9<2.7<5.0<5.9<3.0<2.3<3.0<4.8 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 XXXVII and 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)1987Collection Location Al Lueck, 3r.Dairy Date Collected 01/16/87a 01/16/87b 02/13/87a 02/13/87b 03/13/87a 03/13/87b 00/17/87a 00/17/87b 05/15/87a 05/i5/87b 06/19/87a 06/19/87b 07/20/87b 08/17/87b 09/21/87b 10/19/87b ll/16/87b*12/21/87b Iodine-131 p 5%<0.73<1.0<0.68<0.06 2.6+0.7<0.96<1.3 0.69+0.00<0.59<0.97<0.65<0.57<OA9 Ci/1 Strontium-89 1.0+<0.26<0.37<0.02<0.31<0.01 Strontium-90 p 5+2.2+0.3 0.63+0.00 0.05+0.03<0.30 0.30+0.02<0.30+Lower limit of detection (CEP)++Less than lower limit of detection aCEP data bASU data cNot determined

-125-TABLE XXXVII (Cont.)MILK (Fresh)1987Collection Location Paul Skousen Dairy Date Collected 01/16/87a oi/i6/s7b 02/13/87a 02/13/87b 03/13/87a 03/13/87b 00/17/87a 00/17/87b O5/>>/87a O5/i5/87b 06/19/87a 06/19/87b 07/20/87b 08/17/87b 09/21/87b10/19/87b Il/16/87b 12/21/87b iodine-131, 0.5+<0.67<0.53<0.08<0.91<1.3<0.57<0.58<0.97<0.65<0.56<0.51 Ci/I Strontium-89 1.0+<0.25 0.07+0.00<0.37<0.30<0.38 Strontium-90 0.5+<0.89 0.59+0.03 0.52+0.03 0.39+0.03<0.25<0.23 c+Lower limit of detection (CEP)++Less than lower limit of detection aCEP data bASU data cNot determined

-126-TABLE XXXVII (Cont.)MILK (Fresh)1987Collection Location 3ohn Kerr Dairy Date Collected 01/16/87a 01/16/87b 02/13/87a 02/13/87b 03/13/87a 03/13/87b OO/17/87a 00/17/87b O5/i5/S7a O5/i5/S7b 06/19/87a 06/19/87b 07/20/87b 08/17/87b 09/21/87b 10/19/87b 11/16/87b 12/21/87b Iodine-131 p 5%<0.66<0.98<0.66<0.50<0.87<0.50<0.57<0.96'0.66<055<0.08 Ci/1 Strontium-89 1.0+<0.20<0.37<0.37<0.31<0.39 Strontium-90 p 5%<1.2 0.05+0.03<0.27<0.35 0.26+0.02<0.28+Lower limit of detection (CEP)+~Less than lower limit of detection aCEP data bASU data cNot determined

-127-TABLE XXXVII (Cont.)MILK (Fresh)1987 Collection Location Butler Dairy Date Collected Ol/i6/S7a 01/16/87b 02/13/87a 02/13/87b 03/13/87a 03/13/87b Oe/17/87a 00/17/87b O5/i5/S7a O5/i5/S7b 06/19/87a 06/19/87b 07/20/87b 08/17/87b 09/21/87b io/19/87b 11/16/87b 12/21/87b Iodine-131 0 5+<0.70<1.0<0.73<0.09<0.98<1.2<0.57<0.59<1.0<0.60<0.55<0.08 Ci/1 Strontium-89 1.0+<0.23<0.38<0.02<0.32<0.38 Strontium-90 0.5+<0.88<0.26 0.33+0.02<0.30<0.25<0.28+Lower limit of detection (CEP)"+Less than lower limit of.detection aCEP data bASU data cNot determined

-128-TABLE XXXVH (Cont.)MILK (Fresh)1987 Collection Location Date Collected Iodine-131 0 5+Ci/1 Strontium-89 1.0+Strontium-90 0.5+Cordell Baisley Dairy 01/16/87a 01/16/87b 02/13/87a 02/13/87b 03/13/87a 03/13/87b 00/17/87a 00/17/87b 05/15/87a 05/15/87b 06/19/87a 06/19/87b 07/20/87b 08/17/87b 09/21/87b 10/19/87b ll/16/87b 12/21/87b<0.67<1.0<0.63<OA5 2.0+0.7<0.87<1.2<0.52<0.59<0.25<0.37.<0.36<0.30<0.03<1.0 0.79+0.00 0.77+0.05 0.58+0.00 0.50+0.03 0.66+0.00+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)1987Collection Location Hamstra f/2 Dairy Date Collected Oi/i6/S7a 01/16/87b 02/13/87a 02/13/87b 03/13/87a 03/13/87b 00/17/87a OO/17/87b 05/15/87a O5/i5/87b 06/19/87a 06/19/87b 07/20/87b 08/17/87b 09/21/87b 10/19/87b ll/16/87b 12/21/87b Iodine-131 0 5%<0.71<0.93<0.61<0.07<0.91<0.55<2.1<0.96<0.68<0.59<OA9 Ci/1 Strontium-89 1.0>><0.25<0.37<0.37<0.31<0.39 Strontium-90 0.5+<0.89 0.53+0.03 0.65+0.00<0.7 0.57+0.03 0.32+0.02+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 Collection Location Date Collected Ba-14O 4<<Co-60 5<<Co-58 3>>Mn-54 Ru,Rh-106 10>>Zn-65'r,Nb-95 16>>10<<Cs-137 Cs-134 10" Ce-144 18~Fe-59 3<<4s I Al Lueck, 3r.Dairy Oi/i6/S7a ol/i6/87b.

OZ/13/87a 02/13l87b O3/13/87a 03/13/87b O4/i7/87a O4/i7/S7b Os/iS/S7a Os/iS/87b O6/i9/S7a 06/19/87b 07/20/87b os/i7/s7b 09/21/87b Io/19/87b ii/i6/87b iz/>>/87b<69<54<78<74 II<34<36<40<38<39<32<16<16<13<I I<11<lo<I I<11<I I<I I<I I<8.4<16<16<ll<11<8.9<ll<10<98<10<I I<10<7.9<15<13<14<I I<9.1<9.8 11 II<94 Il lo<7.9 c c<84<86<87<76<31<26<30<24<23<25<21<24<21<22<22<19<27/<15<29/<15<32/<15<19/<12<16/<I I<19/<I I<17/<9.4<17/10<iS/IO<isl ii<17/9.8<i4/7.6<17<13<17<11<9.9<I I<ll<11<10<10<I I<9.0<12<11<ll<Io<9.6<9.5<9.5<9.9<8.7<8.9<s.6<7.7<120<77 II<85<82<77<79<81<83<79<75<sz<73<33<26<25<29<22<21<21<20<20<20<zi<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 Collection Location Paul Skousen Dairy Date Collected Ol/16/87a Oi/16/S7b 02/13/87a 02/13/87b 03/13/87a 03/13/87b O4/i7/S7a 04/17/87b 05/15/87a Os/15/87b 06/19/87a 06/19/87b 07/20/87b OS/17/87b O9/21/S7b IO/i9/87b ii/16/87b i2/21/S7b Ba-140 0<67<65<50<69<42<36<40<34<38<40<45<31 Co-60 5>><14<ls<Is<11<7.5<11<I I<12<I I<I I<12<9.0 Co-58 3>>kk<12<13<14<10<7.8<10<lo<9.7<9.2<12<I I<8.0 Mn-54<12<12<14<10<8.3<9.7<9.7<9.8<9.1<10<I I<7.7 Ru,Rh-106 10>>c c c c c<95<100<100<72 Zn-65 16>><30<29<33<22<17<22<26<24<26<24<24<19 Zr,Nb-95 10>><33/14<33/i3<26/17<18/13<14/8.8<IS/9.7<18/10<i4/IO<19/ll<19/ll<ls/12<14/8.0 Cs-137<13<12<10<9.7<9.5<I I<12<i2<8.6 Cs-134 IO<11<12<8.5<7.6<9.6<s.4<9,5<lo<7.9 Ce-144 IS>><I 10<110<74<75<80<7S<78<S3<81 Fe-59 3>><32<34<28<24<IS<22<24<24<21<25<23>>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 Collection Location 3ohn Kerr Dairy Date Collected Ol/i6/S7a oi/i6/87b O2/i3/S7a O2/13/S7b O3/i3/S7a o3/13/s7b O4/i7/87a 04/17/87b OS/i5/S7a Os/i5/S7b O6/i9/S7a O6/i9/S7b 07/20/87b 08/17/87b 09/21/87b 10/19/87b il/i6/87b 12/21/87b Ba-140 4>><230 76<44 78'k 44.<38<42 33 36 32 31<35 Co-60 5>><17<18<12<8.9<12<9.4<12<I I<12<9.1<S.S>k k<16<13<14<10<9.4 kk<8.8<lo<9.6<9.8<8.6<7+7<Io Mn-54<13<12'<10<7.7<10<8.6<9.7<9.5<9.8<74<7.7<10 Ru,Rh-106 10>>C c c<93 77<70<110 Ci/I Zn-65 16>><28<29<31<19<20<, 17<22<23<24<19<19<24 ZrsNb-95 10>><40/<23<26/<15<29/<11<15/<I I<16/<11<16/<8.2<18/<9.6<ls/<10<15/<9 4<14/<8.1<14/<8.3<15/<9.5 Cs-137<12<12<II<10<11<9.4<lo<10<9.6<8.9<8.1<14 Cs-134 lo>><10<11<8.5<8.7<9.6<?.5<9.1<8.6<8.5<7.S<8.3<9.5 Ce-144 IS>><98<120,<69<84<78<75<76<77<82<80<77<78 Fe-59 3>><38<34<27<22<20<IS<21<22<22<ls<18<22<<Lower limit of detection (CEP)>>>>Less than lower limit of detection aCEP data bhSU data cNot Determined TABLE XXXVI Cont.)MILK (FRESH)CAMMA SPECTROMETRY 1987 I I EA I Collection Location Butler Dairy Date Collected Oi/16/S?a Ql/16/8?b 02/13/87a o2/i3/8?b 03/13/87a 03/13/87b O4/i?/S?a o4/i?/s?b Os/iS/S?a 05/15/87b 06/19/87a 06/19/87b 07/20/87b os/17/s?b O9/2O/8?b io/i9/s?b>>/i6/s?b 12/21/87b Ba-140 240 70 48 53<48 38 34 35 41 37 40 35 Co-60 5%16 Is<15<S.l 12<8.5 12 12<lo 12 12<ll Co-58 3%IS 12 11<9.0 IO<8.3 11<9.0 11<9.1 11<9.2 Mn-54 12<ll 14<8.6 lo<6,9<9.9<9.5<10 lo 11 10 Ru,Rh-106 10" c c c<93<94<96<130 2n-65 16%35<31<29 19 26 19 23<22 24 24 22<21 Zr,Nb-95 IQ>><32/(26<30/<15<29/<13<15/<9.2<IS/<il<13/<8.5<iS/<Ii<16/<9.8<IS/<I I<i?/<ii<18/<11<17/<10 Cs-137 2%<13<14<14<8.3<12<8.7<9.8<11<I I<I I<12<18 Cs-134 10%<12<9.8<9.8<7.Q<9.8<7.9<9.1<9.0<8.6<10<lo<11 Ce-144 18>><87<75<91 kk<68<79<79<77<76<?8<79<82<74 Fe-59 3%/k%<46<30<30<20%k<24<17<21<22<24<24<26<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 Collection Location Cordell Baisley Dairy Date Collected Oi/i6/S7a 01/16/87b O2/i3/S7a 02/13/87b O3/i3/S7a 03/13/87b O4/i7/S7a O4/i7/S7b O5/iS/87a O5/i5/S7b 06/19/87a 06/19/87b o7/2o/87b os/i7/s7b 09/21/87b io/i9/s7b ll/16/87b 12/21/87b Ba-140 4%.<62<69<57<79<41<43<41<39 d d d d Co-60 5k<14<16<13<9.0 11 12 ll<Il d d d d Co-58 3k<15 11 J2~<Jo 10<9.9 11 10 d d d d Mn-54 2k 13 13 12<lo Io<9.1 lo<9.3 d d d d Ru,Rh-106 10" c Zn-65 16"<34<28<30<21<25<25<23<22 d d d d Zr,Nb-95 10"<21/<11<26/<13<28/<I I<19/<13<19/<12<17/<9.5<19/<10<17/<9.5 d d d d Cs-137 2k<16<I IO<13<10 kk<II<II<I I<Il d d d d Cs-134 lo>><8.8<9.5<8.7<9.4<9.4<9.9<8.8<9.3 d d d d Ce-144 lsk<76<100<83<76<79<80<78<81 d d d d Fe-59 3k<24<28 kk<24<24 k k<24 kk<24<22<21 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 CAMMA SPECTROMETRY 1987 Collection Location Hamstra II2 Dairy Date Collected Oi/i6/S7a oi/i6/s7b O2/i3/87a 02/13/87b 03/13/87a 03/13/87b O4/17/S7a O4/i7/S7b 05/15/87a os/is/s7b 06/19/87a 06/19/87b 07/20/87b os/i7/s7b 09/21/87b IO/i9/S7b ii/i6/S7b 12/21/87b Ba-140<76<47<46<88<39<38<34<36<38<34 33<39 Co-60 5>><16<16<12<12<8.7<II<13<12<11<9.0<8.9<11 Co-58 3>><13<12<13<lo<S.l<9.2<IO<I I<10<8.2<7.9<lo Mn-54 2>><12<13<10<9.9<8.9<9.7<9.6<9.3<10<8.3<8.4<10 Ru,Rh-106 10>>c c c<86<75<73<98 Zn-65 16>><25<30<25<24<17<22<26<24<22<19<20<24 Zr,Nb-95 Io>><24/<17<31/<14<23/<14<20/<14<14/<9.3<Is/<9.3<is/<io<iS/<I i<17/<10<14/<8.4<14/<8.0<18/<11 Cs-137<13<17<11<11<8.9<ll<ll<II<11<9.3<9.1<13 Cs-134 10>><12<10<9.9<10<7.3<8.2<9.2<9.5<9.2<7.9<7.9<10 Ce-144 18>><84<76<94<80<75<70<79<78<78<80<80<78 Fe-59 3>><31<31<26<30<18<21<21<22<24<IS<17<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-ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL

SUMMARY

1987-'.38-T TE XXXIXENVIRONMENTAL RADIOLOGICAL ITORING PROGRAM ANNUAL

SUMMARY

Name of Facility: Palo Verde Nuclear Generatin Station Location of Facility: Marico a Count Arizona Reporting Period: 1987 Medium or Pathway Sampled (Unit of Measurement Type and Total Number of Analyses Performed Lower Limit of Detection (LLD)All Indicator Locations Mean (f)Range Distance Direction Range Location with Highest Annual Mean Name Mean (f)Control Number of Locations Nonroutine Mean (f)Reported Range Measurements Air Particulates Gross Beta (609)(pCi/m3)0.002 0.028 (557)0.013-0.055 21A 0.029(52/52) 0.028(52/52) 3 miles 180o 0.010-0.055 0.012-0.050 Gross Alpha (609)Gamma Spec (08)Iodine-131 (609)0.005 0.007 0.006(5/557) 0.005-0.008 15A 0.008(1/52) 2 miles 05o 0.008 0.020(1/52) 0.008(1/52) 0.020 0.008 0.01'(io/557) lOA 0.008-0.020 2 miles 22.5o Human Vegetation Iodine-131 (36)(pCi/g-wet)Gamma Spec (36)0.02 a+Less than lower limit of detection No activity detected TABLE XXXIX (Cont.)ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL

SUMMARY

Name of Facility: Palo Verde Nuclear Generatin Station Location of Facility: Marico a Count Arizona Reporting Period: 1987 Medium or Pathway Sampled (Unit of Measurement Type and Total Number of Analyses Performed Lower Limit of Detection (LLD)All Indicator Locations Mean (f)Range Location with Highest Annual Mean Name Mean (f).Distance Range Direction Control Locations Mean (f}Range Number of Nonroutine Reported Measurements Animal Vegetation Strontium-89 (75)(pCi/g)Strontium-90 (75)Gamma Spec (75)0.1 0.05 Drinking IVater Gross Alpha (50)(pCi/1)Gross Beta (50)Strontium-90 (05)Tritium (50)Gamma Spec (50)1.0 2.0 0.5 1000 5.5(26/50) 1.1-20.0 5.0(36/50) 2.0-15.0 Gavette Residence 5 miles 225o McArthur Residence 9 miles 337.5o S.7(5/1S)'0.0-20.0 5.9(12/18) 2.8-10.0 N/A N/A N/A N/A N/A+Less than lower limit of detection aNo activity detected TABL ENVIRONMENTAL RADIOLOGICAL XXIX (Cont.)ITORING PROGRAM ANNUAL

SUMMARY

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

N/A 8.0-270.0 Iodine-131 (116)0.5 1.7(56/1 16)0.58-25.0 Reservoir Onsite 5.7(35/58) 0.96-25.0 N/A"Less than lower limit of detection aNo activity detected TABLE XXXIX (Cont.)ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL

SUMMARY

Name of Facility: Palo Verde Nuclear Generatin Station Location of Facility: Marico a Count Arizona Reporting Period: 1987 Medium or Pathway Sampled (Unit of Measurement Type and Total Number of Analyses Performed Lower Limit of Detection (LLD)All Indicator Locations Mean (f)Range Distance Direction Range Location with Highest Annual Mean Name Mean f)Control Locations Mean (f)Range Number of Nonroutine Reported Measurements Surface IVater Tritium (66)(pCi/1)Cont.Strontium-89 (78)Strontium-90 (78)Gamma Spec Iodine-131 (78)1000 1.0 0.5 0.5 1556(31/66) 660-3791 0.52(l/78) 0.52 0.63(20/78) 0.33-0.97 6.6(26/78) 3.7-13.0 Evap Pond Onsite Reservoir Onsite Evap Pond Onsite Reservoir Onsite 1556(31/03) 660-3791 0.52(l/39) 0.52 0.60(19/39) 0.33-0.97 6.6(22/39) 3.7-13.0 N/A N/A N/A N/A Milk (pCi/1)Iodine-131 (100)0.5 1.9(3/86)0.69-2.6 Cor dell Baisley 7 miles 05o 2.0(l/10)2.0 Strontium-89 (72)1.0 0.07(l/60) 0.07 Paul Skousen 0.07(l/12) 27 miles 90 OA7 Strontium-90 (72)0.5 0.63(15/60) 0.26-2.2 Al Lueck 28 miles 90o 0.90(0/12) 0.30-2.2 0.52(0/12) 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 Date I/86 3/86 Parameter Gross Alpha Gross Beta Gross Alpha EPA Known Value Ci/I+I cr 3+5 15+5 CEP-'eported Value Ci/I+2o 5+I 6+I 7+I 7+I 9+I 10+I 13+3 15+3 16+3 Gross Beta<<8+5 15+3<<<<16+3<<<<17+3<<<<5/86 7/86 9/86 Gross Alpha Gross Beta Gross Alpha Gross Beta Gross Alpha 8+5 15+5 6+5 18+5 15+5 No Data Reported.No Data Reported 5+I 6+I 6+I 15+3 16+3 18+3 12+2 12+2 IO+2 11/86 Gross Beta"<<" Gross Alpha Gross Beta 8+5 20+5 20+5 17+0 18+3 20+3 No Data Reported 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 WaterDate 2/86 Parameter Cesium-130 EPA Known Value Ci/I+I o'0+5 CEP Reported Value Ci/I+2a 29+0 20+0 33+5 Cesium-137 Chromium-51 22+5 38+5 18+0 16+0 21+0 55+10 53+10 52+10 6/86 Cobal t-60 Ruthenium-106 Zinc-65+Cesium-137 Chromium-51 Zinc-65 Cobalt-60 18+5 0+5 00+5 10+5 0+5 86+5 66+5 25+2 29+0 21+3 59+20 60+20 60+20 57+15 56+12 56+12 9+2 12+2 10+2 No Data Reported 87+8 80+8 90+8 51+5 53+5 58+5 I+Spike sample was reanalyzed and a value of 01+10 pCI/I was obtained-146-EPA CROSS-CHECK PROGRAM 1986 Gamma In Water (Continued)

Date 10/86 Parameter Ruthenium-106

'Cesium-130a Ruthenium-106 Cesium-130 Cesium-137 Cobalt-60 Zinc-65 Chromium-51++

EPA Known Value Ci/I+la 50+5 09+5 70+5 28+5 31+5 85+5 59+5 CEP Reported Value Ci/I+2o No Data Reported 37+5 38+5 39+5 65+21 67+6 71+23 22+2 26+2 28+2 02+0 03+I 08+3 28+0 29+0 29+0 77+7 78+7 79+7 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 1986Date 2/86 6/86 10/86 Parameter Tritium+Tritium++Tritium Tritium in Water EPA Known Value Ci/I+I o 5227+523 3125+360 5973+597 CEP Reported Value Ci/I+2 (y 0100+010 0590+059 0190+019 2290+230 2170+220 2050+210 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 Date I/86 5/86 Parameter Strontium-89 Strontium-90" Strontium-89 Strontium-90 Strontium In Water EPA Known Value Ci/I+I cF 31+5 15+1.5 5+5 5+1.5 CEP Reported Value Ci/I+2o'5+I 37+I 00+I 19+3.1 18+3.0 22+2.6 0+I 5+I 6+I 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 Date O/86 8/86 Parameter Low Level High Level+Iodine-131 In Water EPA Known Value Ci/1+1 G 9+6 05+6 CEP Reported Value Ci/1+2 o'+0 7+0 7+0 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 Date 6/86 Parameter Iodine-131 Cesium-137 Strontium-89a S trontium-90a EPA Known Value Ci/1+1 o'1+6 31+5 0+5 16+1.5 CEP Reported Value Ci/I+2 o 36+6 32+0 00+7 30+5 26+0 28+0 13+0 15+0 16+0 10/86 Potassium Iodine-131 Cesium-137+

1600+80 mg/1 09+6 39+5 1568 mg/1 1577 mg/1 1633 mg/1 03+3 33+9 37+0 53+25 58+22 08+20 Strontium-90 Strontium-89 Potassium 0+1.5 9+5 1565+78 mg/1 No Data Submitted No Data Submitted 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 Date 2/86 Parameter Low Level Iodine-131 In Milk EPA Known Value Ci/I+1 a 9+6 CEP Reported Value Ci/I+2 a 9+I 9+1 10+1-152-EPA CROSS-CHECK PROGRAM 1986 Radionuclides in Air Filters Date O/86 9/86 Parameter Gross Alpha Gross Beta I Strontium-90+

Cesium-137 Gross Alpha Gross Beta Strontium-90++

Cesium-137 EPA Known Value~l<<*-15+5 07+5 18+1.5 10+5 22+5 66+5 22+1.5 22+5 CEP Reported Value Ci/filter+2 a 15+3 15+3 16+3 56+6 57+6 58+6 26+0 27+0 28+0 8+3 9+3 9+3 23+2 22+2 26+2 60+2 63+2 66+2 17+3 21+3 18+3 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 1986Radionuclides In Food Date 1/86 Parameter iodine-131 Cesium-137 EPA Known Value Ci/k+le 20+6 15+5 CEP Reported Value Ci k+2a 20+5 21+7 22+7 15+5 16+5 17+5 7/86 Potassium Strontium-89 Strontium-90 Strontium-89 Strontium-90 Iodine-131 Cesium-137 Potassium 950+103 mg/kg 25+5 10+1.5 30+5 19+1.5 30+6 20+5 1150+58 mg/kg 910 mg/kg 950 mg/kg 900 mg/kg No Data Reported No Data Reported 23+5 25+5 27+5 22+0 23+0 26+0 18+5 18+5 19+5 15+6 16+6 16+6 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 Date O/87 Parameter Gross Alpha Gross Beta Strontium-90 EPA Known Value~l'-" 10+5 03+5 17+1.5 CEP Reported Value Ci/filter+2 cr 20+I 18+I 17+I 63+2 60+2 66+2 19+10 23+10 20+10 8/87 Cesium-137 Gross Alpha Gross Beta Strontium-90 10+5 30+5 10+1.5 17+5 19+5 20+5 10+I 12+I 13+I 29+2 31+2 33+2 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 Date i/87 Parameter Cross Alpha EPA Known Value~l-li+5 CEP Reported Value Ci/I+2<12+2 12+2 12+23/87 5/87 7/87 9/87 Gross Beta Gross Alpha Gross Beta Cross Alpha Cross Beta Cross Alpha Gross Beta Gross Alpha Gross Beta 10+5 3+5 13+5 II+5 7+5 5+5 5+5 12+5 22+6 25+6 27+7 0+2 0+2 0+2 12+0 9+0 8+0 ll+2 II+2 12+2 17+6 18+6 19+6 0+2 5+2 6+2 6+3 7+3 9+3 3+I 3+I 3+I 13+I 13+I 15+I-157-EPA CROSS-CHECK PROGRAM 19S7 Gross Al ha and Gross Beta in V/ater (Cont.)Date 11/87 Parameter Gross Alpha Gross Beta EPA Known Value Ci/1+16 7+5 19+5 CEP Repor ted Value Ci/1+2a 6+2 7+2 8+2 16+3 18+3 20+3-158-EPA CROSS-CHECK PROGRAM 1987 Date 2/87 Parameter Cobalt-60 Zinc-65 Ruthenium-106 Gamma in Water EPA Known Value Ci/I+I a 50+5 91+5 100+5 CEP Reported Value Ci/I+2 cr 55+5 55+5 56+5 102+7 110+6 108+6 93+5 105+5 108+5 Cesium-130 59+5 61+3 57+2 60+3 6/87 Cesium-137 Cobalt-60 Zinc-65 Ruthenium-106 Cesium-130.

87+5 60+5 10+5 75+5 00+5 109+6 98+6 102+5 69+5 69+5 71+5 12+3 IO+3 16+3 80+5 75+5 71+5 00+3 39+3 38+3 Cesium-137 Chromium-51

-159-80+5 Ol+5 82+5 80+5.85+5 06+3 00+3 00+3 EPA CROSS-CHECK PROGRAM 1987 Gamma in Water (Cont.)Date 10/87 Parameter Chromium-51 Cobalt-60 Zinc-65 Ruthenium-106 Cesium-l30 Cesium-137 EPA Known Value Ci/I+I e 70+5 15+5 06+5 61+5 25+5 51+5 CEP Reported Value Ci/I+20'6+8 67+8 73+8 17+2 18+2 19+2 55+15 57+15 61+15 71+10 75+10 79+10 26+3 26+3 27+3 56+5 56+5 58+5-160-EPA CROSS-CHECK PROGRAM 1987 Date 2/87 6/87 10/87 Parameter Tritium Tritium Tritium Tritium in Water EPA Known Value Ci/I+1 0'209+021 2895+357 0092+009 CEP Reported Value Ci/1+2 a 0600+500 0510+500 0330+500 2866+285 2831+288 2792+288 3867+300 3925+300 0211+300-161-EPA CROSS-CHECK PROGRAM 1987 Strontium In Water Date I/87 5/87 Parameter Strontium-89 Strontium-90 Strontium-89 Strontium-90 EPA Known Value Ci/I+I 6 25+5 25+1.5 01+5 20+1.5 CEP Reported Value Ci/I+2e 15+5 17+6 20+5 22+5 20+6 20+5 26+5 30+5 30+5 10+3 15+3 17+3-162-EPA CROSS-CHECK PROGRAM 1987 Iodine-131 in Water Date 3/87 8/87 10/87 Parameter Low Level+High Level Mid Level EPA Known Value Ci/1+1 a'.0+0.7 08+6 26+6 CEP Reported Value Ci/1+2 o'+0 2+0 2+0 03+5 01+0 39+3 19+0 20+0 22+0<<Unable to reanalyze due to half-life decay.-163-EPA CROSS-CHECK PROGRAM 1987 Radionuclides in Milk Date 6/87 Parameter Strontium-90 Cesium-1-37 Strontium-89+

Iodine-131 Potassium EPA Known Value Ci/I+I 6 35+1.5 70+5 69+5 59+6 1525+76 mg/I t CEP Reported Value Ci/I+2 rJ 29+3 28+3 32+3 75+2 77+2 70+2 5+2 5+2 0+2 63+2 60+2 60+2 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 Date 2/87 Parameter Low Level EPA Known Value Ci/1+1 0'.0+0.9 CEP Reported Value Ci/1+2a 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 Date Sam le Nuclide All values in Ci/liter EPA Value RMF Value Ave.all labs*I 1-9-87 Water Strontium-89 Strontium-90 25+5 20.0+0.8 25+1.5 29.6+2.8 23.3+6.3 23.3+2.8 1.002 0.805 1-23-87 Water Gross Alpha Gross Beta ll+5 10+5 10.2+0.5 11.6+1.1 10.2+2.6 11.2+2.3 0.775 0.862 2-6-87 Water Chromium-51 Cobalt-60 Zinc-65 Ruthenium-106 Cesium-130 Cesium-137 50+5 91+5 100+5 59+5 87+5 71 08.7+5.6 92.6+1.9 92.9+7.6 53.2+1.5 88.2,+2.5 50.0+0.0 93.9+8.1 95.0+15.5 50.8+3.5 87.3+5.0 1.027 0.983 1.076 1.109 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 Gross Beta Strontium-90 Cesium-137 IO+5 03+5 17+1.5 8+5 13.5+1.9 05.0+0.9 18.5+0.8 9.3+O.l 15.5+3.0 05.3+5.0 17.5+1.8 9.3+2.1 1.037 0.956 0.919 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 0-17-87 Blind Nuclide Cobalt-60 Cesium-130 Cesium-137 Gross Alpha Gross Beta Strontium-90 Strontium-89 Radium-226 8+5 20+5 15+5'0+8 66+5 10+1.5 19+5 3.9+0.6 7.9+0.1 18A+1.6 13.9+0.9 52+10 101+8 10.5+0.0 19.8+0.3 3.7+0.5 9.0+2.0 18.2+2.6 15.7+2.2 28.0+8.3 60.5+7.3 9.98+1.56 17.0+OA 3.75+0.02 EPA/RMF I 1.013 1.086 1.079,.0.577 0.653 0.952 0.960 1.050 5-8-87 Water 6-26-87 Milk Strontium-89 Strontium-90 Iodine-131 Strontium-89 Strontium-90 Cesium-137 Ol+5 20+5 59+6.69+5 35+5 70+5 02.1+1.5 23.1+0.7 60+3 88.6+3A 38.3+1.5 76.9+0.5 39.0+7.1 19.6+2.9 62.0+5.9 63.7+10 30.3+5.1 75.2+5.70.983 0.779 0.910 0.962 7-20-87 Water Gross Alpha Gross Beta 5+5 5+5 5.2+0.0 7.8+1.6 0.7+1.0 6.1+1.8 0.962 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 Gross Beta Cesium-137 Strontium-90

<Results are pCi/filter 10+5 30+5 10+5 10+5 11.0+.0.7 31.0+2.0 8.7+1.7 10.2+0.2 10.5+2.2 30.3+0.3 10.7+1.9 9.6+2.0 0.877 0.968 1.109;168-EPA INTERCOMPARISON RESULTS OCTOBER 1987 THROUGH DECEMBER 1987 Date Sam le Nuclide All values in Ci/liter Ave.all labs EPA/RMF 10-9-87)Vater Chromium-51 Cobalt-60 Zinc-65 Ruthenium-106 Cesium-130 Cesium-137 70+5 15+5 06+5 61+5 25+5 51+5 66.0+35 16.8+1.8 05.6+3.6 53.0+0.2 23.0+OA 51.3+0.7 68.8+8.9 168+2.0 07.2+0.7 60.2+9.7 , 20.0+.2.5 51.8+3.0 I.050 0.893 1.009 1.102 1.087 0.990 11-21-87 Blind Cross Alpha Gross Beta Cobalt-60 Cesium-130 Strontium-89 Strontium-90 Radium-226 25.0+2.5 68.8+1.6 16.1+1.1 15.7+0.5 19.2+1.0 I I.O+0.2 0.50+0.23 12-0-87 IVater iodine-131 27.1+I.I+Data not received from EPA in time for inclusion.

-169-EML UALITY ASSURANCE PROGRAM INTERCOMPARISON RESULTS MAY 1987Sample T Air Filter Air Filter Air Filter Air Filter Air Filter Units pCi/filter pCi/filter pCi/filter pCi/f ilter pCi/filter Nuclide Ber yllium-7 Manganese-50 Cobalt-60 Strontium-90 Cesium-137 Reported Value 0000+100 060+10 050+10 930+1.0 070+10 EML Value 0600.055.9.55 070.EML/RMF 1.053 0.990 0.990 1.027 1.000 Soil Soil Soil Tissue Tissue Tissue pCi/g pci/g PCi/8 pCi/g pCi/g pCi/5 Strontium-90 Cesium-137 Radium-226 Strontium-90 Cesium-137 Radium-226 0.53+0.06 0.00+0.05 0.20+0.01 1.7+0.2 1.2 0.35+0.02 0.180 0.08 0.79 2.87 0.002 0.0 0.307 1.087 0.000 1.6+1.136a Vegetation pCi/g Vegetation pCi/g Vegetation pCi/g Cobalt-60 Strontium-90 Cesium-137 0.68 23+3 10+1 2.10 20.6 10.5 0.893 1.031 Water Water Water Water Water pCi/ml pCi/ml pCi/ml pCi/ml pCi/ml Tritium Manganese-50 Cobalt-60 Strontium-90 Cesium-137 29.7+2.1 5.1+0.1 0.7+O.l 0.11+0.01 2.0+0.1 33.7 0.72 0.59 1.33 2.30 1.136 0.926 0.980 12.5OOb 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.-170-"

EML UALITY ASSURANCE PROGRAM INTERCOMPARISON RESULTS DECEMBER 1987 Sample Units Nuclide Reported Value EML Value EML/RMF Air Filter Air Filter Air Filter Air Filter Air Filter Air Filter Air Filter pCi/filter pCi/filter pCi/filter pCi/filter pCi/filter pCi/filter pCi/filter Beryllium-7 Strontium-89 Strontium-90 Zirconium-95 Antimony-125

-Cesium-137 Cerium-100 920+60 05+3 07+3 180+10 820+IO 300+6 010+20 896.38.3 36.9 188 963 290 006 0.970 0.851 0.787 1.00 1.18 0.952 0.990 Soil Soil SoilSoil pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g Strontium-90 Strontium-90 Cesium-137 Cesium-137 Radium-226 Radium-226 12.3+0.6 11.8+0.6 0.19+0.00 0.20+0.05 0.72+0.01 0.78+0.02 12.7 12.7 0.211 0.211 0.636 0.636 1.03 1.08 1.05 0.885 0.813 Tissue Tissue Tissue pCi/g pCi/g pCi/g Strontium-90 Cesium-137 Cesium-137 11.0+0.7 0.19+0.00 0.19+0.00 12.9 0.190 0.190 1.00 1.00 Vegetation pCi/g Vegetation pCi/g Cesium-137 Cesium-137 1.9+0.1 2.1+0.1 1.82 1.82 0.962 0.870 Water Water Water Water Water Water ter pCi/ml pCi/ml pCi/ml pCi/ml pCi/ml pCi/ml pCi/ml Tritium Manganese-50 Cobalt-57 Cobalt-60 Strontium-90 Strontium-90 Cesium-137 17.1+0.5 2.26+0.02 0.10+0.01 2.27+0.02 0.206+0.016 0.236+0.010 2.28+0.02 19.1 2.28 0.102 2.27 0.252 0.252 2.28 1.01 1.01 1.00 1.02 1.06 1.00-171-USNRC TEST SAMPLE RESULTS A11 values in uCi/mlNuclide Trtium Strontium-S9 Strontium-90 RMF 1.16 E-0 1.50 E-0 2.15 E-5 Certificate Value 1.27 E-0 1.70 E-0 1.57 E-5 Ratio 0.91 0.86 1.37.Agreement Ran e 0.75-1.33=0.75-1.33 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.

-172-IODINE-131 CHARCOAL CANNISTER INTERCOMPARISON RESULTS All values in uCi Ge(Li)Detector 8 Known Value RMF Value RMF/Known 2 3 0.0720 0'.0720 0.0720 0.0771 0.0783 0.0773 1.071 1.088 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.-174-TRITIUM IN URINE INTERCOMPARISON RESULTS AUGUST 19S7 All values in Ci/liter~Sam le 3 Known Yalue 3.73 E+5 1.21 E+7 7.00 E+7 RMF Yalue++3.23 E+5+0.8%1.09 E+7+1.0%6.30 E+7+0.0%BRMD+/RMF 1.15 1.11 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.-173-1987 ASU/PVNGS TLD INTERCOMPARISONS Month January February March April May June July August September'ctober November December Performance Plus Bias 0.156 0.222'.055 0.302 0.000 0.290 0.180 0.267 0.060 0.127 0.002 Values are considered passing if less than 0.5 (ANSI NI3.11)+Test not conducted.

-175-APPENDIX D 1987 LAND USE CENSUS-176-

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 ResidentTable 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.-177-Table 1 NEAREST RESIDENCE WITHIN FIVE i4!ILES OF PVNGS December 1987 meteorological Sector N NNE NE ENE ESE SE SSE SSW SW WSW NNW Radial~Hllea e 1.50 1.50 2.00 2.70 (NEW)2.25 3.75 4.00 4.50 2.80 (NEW)No Residents 2.90 1.75 No Residents No Residents 4.00 2.50-178-