ML17305A945

Rev 1 to Palo Verde Nuclear Generating Station Annual Radiological Environ Operating Rept for 1987.

ML17305A945
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Site:	Palo Verde
Issue date:	12/31/1987
From:	ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
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ARIZONA NUCLEAR POWER PROJECT PALO VERDE NUCLEAR GENERATING STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1987 (Rev. I)

~007240024 9007 1 7 POR AOOCK 0~i000~i~ ~

R PDC E: 1REPORTlRPANNUAL. 87

Abstract 1.0 Introduction 2.0 Description of the Monitoring Program 3.0 Analytical Procedures 4.0 Sample Preparation Methods 18 5.0 Nuclear Instrumentation 19 6.0 Isotopic Detection Limits and Activity Determinations 22 7.0 Quality Control Programs 25 8.0 Data Interpretation and Conclusions 32 9.0 Miscellaneous Information 143 References 143 Appendix A 1986 EPA Cross-check Results (CEP) 144 Appendix B 1987 EPA Cross-check Results (CEP) 155 Appendix C 1987 Cross-check Results (ASU) 166 Appendix D 1987 Land Use Census 176

Number Collection Locations TABLES Title ~Pa e I

1987 Collection Schedule Aliquot Scanned for Detection Limit Calculation and Actual Analysis 28 IV Sample Counting Times 29 Detection Limits by other than Gamma Spectrometry 30 VI Detection Limits by Gamma Spectrometry 31 VII Gross Beta in Air Particulate Data (First Quarter) 36 VIII Gross Beta in Air Particulate Data (Second Quarter) 38 IX Gross Beta in Air Particulate Data (Third Quarter) 40 Gross Beta in Air Particulate Data (Fourth Quarter) 42 XI Gross Beta in Air Particulate 'Data (Station Summary) 44 ZII Gross Alpha in Air Particulate Data (First Quarter) 45 XIII Gross Alpha in Air Particulate Data (Second Quarter) 47 XIV Gross Alpha in Air Particulate Data (Third Quarter) 49 Gross Alpha in Air Particulate Data (Fourth Quarter) 51 XVI Airborne Radioiodine Data (First Quarter) 67 XVII Airborne Radioiodine Data (Second Quarter) 69 XVIII Airborne Radioiodine Data (Third Quarter) 71 XIX Airborne Radioiodine Data (Fourth Quarter) 73 XX(deleted) Quarterly Thermoluminescent Dosimetry (First Quarter) 76 XXI(deleted) Quarterly Thermoluminescent Dosimetry (Second Quarter) 78 XXII(deleted) Quarterly Thermoluminescent Dosimetry (Third Quarter) 80 XXIII(deleted) Quarterly Thermoluminescent Dosimetry (Fourth Quarter) 82 XXIV Human Vegetation 90 Human Vegetation (Leafy), Gamma Spectrometry 92 XXVI Human Vegetation (Citrus Fruits), Gamma Spectrometry 93 XXVII Animal Vegetation 95 XXVIII Animal Vegetation, Gamma Spectrometry 98 XXIX Drinking Water 102

Drinking Water, Gamma Spectrometry 105 XXZI Groundwater 109 XXXII Groundwater, Gamma Spectrometry 110 XXZIII " Surface Water, PVNGS Reservoir 113 XXZIV Surface Water, PVNGS Evaporation Pond 116 Surface Water (Composite - CEP)

PVNGS Evaporation Pond and Reservoir 119 XXXVI Surface Water, Gamma Spectrometry PVNGS Evaporation Pond and Reservoir 120 XXXVII Milk (Fresh) '125 XXXVIII Milk (Fresh), Gamma Spectrometry 131 XXXIX Radiological Environmental Monitoring Program Annual Summary - 1987 138

REMP Sample Sites (Figure 1)

REMP Sample Sites (Figure 2)

Gross Beta in Air. Particulate (Station 1A) 53 Gross Beta in Air Particulate (Station 4A) 54 Gross Beta in Air Particulate (Station 6A) 55 Gross Beta in Air Particulate (Station 7A) 56 Gross Beta in Air Particulate (Station 14A) 57 Gross Beta in Air Particulate (Station 15A) 58 in Air. Particulate (Station I

Gross Beta 17A) 59 10 Gross Beta in Air. Particulate (Station 21A) 60 Gross Beta in Air Particulate (Station 29A) sz Gross Beta in Air Particulate (Station 35A) 62 13 Gross Beta in Air Particulate (Station 40A) 63 14 Gross Beta in Air. Particulate (Station 44A) 64 15 Gross Beta in Air Particulate (Mean Weekly Activity) 65 16 (deleted) Quarterly Thermoluminescent Dosimetry (First Quarter) 84 17 (deleted) Quarterly Thermoluminescent Dosimetry (Second Quarter) 85 18 (deleted) Quarterly Thermoluminescent Dosimetry (Third Quarter) 86 19 (deleted) Quarterly Thermoluminescent Dosimetry (Fourth Quarter) 87 20 (deleted) Mean Quarterly Thermoluminescent Dosimetry 88

This Annual Radiological Environmental Operating Report reports on the Radiological Environmental Program, comprised of (a) the Radiological Environmental Monitoring Program (REMP), (b) the Annual Land Use Census, and (c) the Interlaboratory Comparison Program. Activities in all 3 program elements are reported.

The REMP 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 ASU 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 ter, 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 July 1, 1987, Arizona State University assumed responsibi.lity for environmental analyses with the exception of vegetation, TLD, airborne particulate and airborne radioiodine samples. Results 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 the Tables in this report. TLD data are PVNGS'.

ARIZONA NUCLEAR POWER PROJECT PALO VERDE NUCLEAR GENERATING STATION OPERATIONAL RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM This report first presents results of the operational radiological environmental 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), followed by Interlaboratory Comparison Program results and Land Use Census results.

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 Position, 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 the environment, e.g., atmospheric nuclear detonation or abnormal plant releases.

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

1.1.2 August 30, 1987 - Baisley Dairy closed down. Samples from four other existing sample locations and one control location assure that Technical Specifications for milk sampling are met.

1.2.1 April 24, 1986 - Weekly samplings of PVNGS Reservoir (Sample Site ¹60) and Pond (Sample Site ¹59) now include collection of a sample in a glass container for Tritium analysis.

1.2.2 July 17, 1986 - Wedgeworth house (Sample Site ¹49) drinking water sample site changed name to Glover.

1.2.3 October 16, 1986 - Gavette Drinking Water sample (Sample Site

¹48) added to REMP, replacing Desert Farms.

In the spring of 1983, the Arizona State University (ASU) Radiation Measurements Facility (RMF) implemented a long-term independent radiological environmental assessment 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 PVNGS. 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 the 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 vegetation.

J I

Monthly milk samples were collected from six sites until September 198 when one dairy ceased operation. Five samples were collected thereafter.

All 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 ANPP has contracted with CEP and ASU to determine the ambient radiation level in the environment around PVNGS during its operation. I 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 1 and Figure 2.

The monitoring sites and the respective sample types collected are described in Table I. Table II describes the sample collection frequency. Information.

concerning new sample types, locations, and collection frequency is included in these tables where applicable.

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1 Radiologl,cal Environmental Monitoring Program Sample Sites

S Sample Rif~k 1A Air E30 APS Goodyear Office 4A Air E20 APS Buckeye Office 6A Air (Control) SSE35 APS Gila Bend Substation 7A Air SE8 Arlington School 14A Air NNE2 Buckeye-Salome Rd. & 371st Ave.

15A Air NE2 NE Site Boundary 17A Air E4 351st Ave., 1 mi. S of B-S Rd.

21A Air S3 S Site Boundary 29A Air Wl W Site Boundary 35A Air NNW9 Tonopah, Palo Verde Inn Fire Station 40A Air N3 Wintersburg, AZ 44A Air ENE35 APS El Mirage Office (Sun City) 46 Water, Veg. NNW9 McArthur's Farm, Tonopah 47 Vegetation ENE3 Adam's Residence, 355th Avenue &

Buckeye - Salome Road 48 Water SW5 Gavette residence, 39326 W. Elliot Rd 49 Water ESE4 Glover Residence, 351st Ave. & Dobbins Rd.

50 Milk NE7 Cordell Baisley Dairy, 331st Ave. &

Van Buren 51 Milk, Veg. Ell Butler Dairy, Palo Verde Rd. & Southern 52 Vegetation E15 Cambron Farm, Miller Rd. & Broadway 53 Milk E26 Kerr Dairy, Dean.& Buckeye Rds.

54 Milk E27 Skousen Dairy, Airport & Dobbins Rds.

55 Milk E28 Al Lueck Dairy Jr., Jackrabbit & Hazen Rds 56 Milk (Control) E75 Hamstra Dairy ¹2, McQueen & Ryan Rds.

57 Water Onsite Well 27ddc 58 Water Onsite Well 34abb 59 Surface Water Onsite PVNGS Evaporation Pond 60 Surface Water Onsite PVNGS Reservoir 61 Vegetation (Control) E80 Ray Rd. and Higley Rd., Higley, Arizona (a) Directions are based on 16 compass points; distances are from center1ine of Unit 2 containment, in miles. II Airborne Dcmestic Fresh Drinking Surface Emiiuimfiua ~nnha Zcsehahim QunmdBBhuz MBBBr Jh&K flA, APS Goodyear Office f4A, APS Buckeye Office f6A, APS Gila Bend Substation (Control) fyh, hrlinhton School g14A, Buckeye-Salome Rd.

& 371st hve.

$ 15A, BE Site Boundazy f17h, 351st hve., 1 mi.

S of B-S Rd.

02lh, S Site Boundary f29A, W Site Boundary 435A, Tonopah, Palo Verde Inn Fire Station f40A, Trailer Park at Wintersbur6 f44A, APS El Hira6e Office f46, HcArthur's Farm f47, Adam's Residence 048, Gavette Residence 849, Glover Residence 450, Cordell Baisley Dairy 451, Butler Dairy

$ 52, Cambron Farm f53, Kerr Daizy 454, Skousen Dairy 055, Al Lueck, Jr. Dairy

f56, Hamstra f2 Dairy (Control) hir Rart~hdm hirborne Badiaiadh16 Domestic

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$ 57, Well 27ddc t58, Well 34abb f59, PVNGS Evaporation Pond

$ 60, PVNGS Reservoir 461, Cooley Farm (Control)

W ~ Weekly H ~ Hontbly hh ~ hs available axmtbly during groeing season ~

Q Quarterly

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

3,1,1 3,1.1.1 Two liters of milk containing standardized Iodine carrier is stirred with Amberlite IRA-400 anion exchange resin for one hour. The Iodine is stripped from the resin with sodium perchlorate (NaC10~) and precipitated with silver nitrate (AgNO>). 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 efficiency, respectively, using Iodine-131 precipitated as silver iodide (AgI) ~

3.1.1.2 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.

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 resi with strong acid. After the ingrowth period has been established, the Yttrium-90 is extracted with five percent di-2-ethylhexyl phosphoric acid (DzEHPA) 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.

A suitable aliquot of sample is placed in a Marinelli beaker and counted with a multi-channel analyzer equipped with an intrinsic Germanium detector which is coupled to a 4096 channel, computer based, multi-channel analyzer (Northern Scientific TN4500). The resulting spectrum is analyzed by the computer, an specific nuclides, if present, identified and quantified.

Refer to Milk Subsection 3.1 1.4.

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Required on leafy vegetation only. After appropriate preparation of the sample, analysis is performed as discussed in Subsection 3.1.1.4.

A 1.0 liter aliquot of water is evaporated to dryness and transferred to a weighed planchet: The Gross Alpha and Gross Beta radioactivity is 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).

3.1.3.2 Refer to Milk Subsection 3.1.1.4.

3.1.3 '

A 1.0 liter aliquot of the sample containing standardized stable Strontium carrier is evaporated to dryness and wet ashed with concentrated nitric acid (HNO~) and hydrogen peroxide (HzOz). The Yttrium-90 is extracted with five percent Di-2-ethylhexyl phosphoric acid (DzEHPA) 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.

3.1.3.4 g~m Three milliliters of the water sample is mixed with Packard Opti-fluor 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.

3.1.4.1 One liter of water containing standardized Iodine carrier is acidified with nitric acid (HNO>), then extracted with carbon tetrachloride (CC1~) and sodium nitrite (NaNOz) to remove the Iodine. The Iodine is back extracted from the carbon tetrachloride (CC1,)

using a 0.2% hydrazine solution which supplies more purification and an aqueous media for. precipitation.

Iodine is precipitated with silver nitrate (AgNO~)

and filtered on a tared glass fiber filter as silve 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 (AgI).

3 '.4.2 An aliquot of the monthly composite is taken and analyzed according to Ground and Drinking Water Subsection 3.1.3.1.

3.1.4.3 An aliquot of the monthly composite is taken and analyzed according to Milk Subsection 3.1.1.4.

3.1.4.4 An aliquot of the monthly composite is taken and analyzed according to Milk Subsection 3.1.1.2.

3.1.4.5 An aliquot of the monthly composite is taken and analyzed according to Groundwater and Drinking Water.

Subsection 3.1.3.3.

3.1.4.6 ~~a An aliquot is taken and analyzed according to Ground and Drinking Water Subsection 3.1.3.4 ~

3.1.5.1 The Sartorius filter (cellulose nitrate filter with a 3 micron pore size), is 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).

9'14-

3.1.5.2 The air filters are sealed in small, plastic Marinelli beakers and counted utilizing the method described in

'Milk Subsection 3.1.1.4.

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 (8.04 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.

3.1.6.1 Radioiodine is removed from activated charcoal along with a standardized iodine carrier using concentrated ammonium hydroxide (NH~OH) and hydrogen peroxide (HzOz). The charcoal is filtered and the remaining solution is acidified with nitric acid (HNO~) and extracted with carbon t'etrachloride (CC1~). 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 (Agl). The dried precipitate is weighed for recovery and counted for Iodine-131 in'a thin window, gas flow, proportional counter (Beckman Low'eta II or Berthold LB770) having forty-one percent and forty-five percent efficiencies, respectively, for Iodine-131 precipitated as silver iodide (AgI).

3.1.6.2 Gamma S ectromet Method The direct gamma counting method for Iodine-131 consists of placing the 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. 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 loading. Both standards and samples are placed on the detector so that the load gradient is decreasing with distance from the detector.

3.2 Anal tical Procedures ASU 3.2.1 Gamma S ectrosco 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 sample is evaporated to 500 ml and counted in a Marinelli beaker.

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

Soil A imal Feeds 500 ml of these types of samples is counted in a Marinelli beaker. 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 an apparent density of 1.0 to 1.1.

9

3.2.2 Iodine is sorbed onto Dowex 1-X8 resin, stripped with hypochlorite, extracted into chloroform, stripped, precipitated as Pdl>, and counted in a low background gas-flow proportional counter.

QxaxmuQ, Charcoal cartridges are counted using a Ge(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.

3.2.3 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 subtracting Strontium-90.

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.

3.2.4 T~~

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

4.0 The following sample preparation methods are routinely used by CEP.

O 4.1

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

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

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

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

4.2 Iodine carrier (Potassium Iodide), formalin and sodium bisulfate are added when the milk is collected to stabilize the Iodine-131 during shipment of samples to CEP. The procedure for Fresh Milk is then followed as described in Section 3.1.1 of this report.

5.1 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.

The Beckman Wide Beta II Two-inch Detector Counting System has an average of 2.5 cpm Beta background and 0.1 cpm Alpha background. The system can also be set up for one-inch detector. The system capacity is one hundred samples'he detector has an efficiency of 60% for Strontium-90 and 40% for Plutonium-239.

The Beckman Wide Beta II Two-inch Planchet Counting System has an average of 2.5 cpm Beta background and O.l cpm Alpha background. The detector has a 60% efficiency for Strontium-90 and 40% for Plutonium-239. This system has been designed for simultaneous Alpha and Beta counting. The system sample capacity is one hundred samples.

The Beckman Low Beta II Gas Proportional One-inch Detector Counting System has an average of 1.5 cpm Beta background and 0.1 cpm Alpha background and detector efficiency of 60% for Strontium-90 and 40% for Plutonium-239. The system capacity is one hundred samples. The system can also be set up for.

iI two-inch detector having 2.5 cpm Beta background and 0.1 cp Alpha background.

The Beckman Low Beta II Gas Proportional Two-inch Detector Counting System has an average of 3.0 cpm Beta background and 0.2 cpm Alpha background and detector efficiency of 60% for Strontium-90 and 40% 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.

Beckman LS-5801 Liquid Scintillation Counter will be used for.

all Tritium determinations, as well as C-14, P-32, S-35 and other Beta emitters. The system has a tritium counting efficiency of sixty percent on an unquenched sample.

The Gross Alpha Counting Systems consist of two windowless gas flow detectors manufactured by Nuclear Measurements Corporatio with an Alpha efficiency of 55% with a background of less than O.l cpm.

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

The Tennelec LB 5100 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.

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 have 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 efficiencies of 45% for Strontium, Yttrium-90 and 43%

for Cesium-137.

5' 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), 14% efficiency, 2.08 keV FWHM

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

4. Canberra HPGe, 28% efficiency, 3.96 keV FWHM 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 6.1 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 to provide for accurate analysis or the entire process is invalid (Table III).

6.1.2 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 sampl counts per minute (cpm) to disintegrations per minute (dpm).

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

6.1.4 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).

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.

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:

4.66s~

LLD E ~ V ~ 2.22 ~ Y ~ exp(-Mt)

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).

E - Counting efficiency (as counts per disintegration).

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

2.22 Number of disintegrations per minute per picocurie.

Y Fractional radiochemical yield (when applicable).

Radioactive decay constant for the particular radioisotope.

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

The value of s> used in the calculation of the LLD for a particular measurement system is based on the actual observed variance of the background counting rate, or, of the counting rate of the blank sample (as appropriate), rather than on an unverified theoretically predicted 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 A

C-B l 96 (2.22) (V) (R) (E) (e- ) (2.22) (V) (R) (E) (e-~~)

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.

E Counter efficiency as cpm/dpm.

2.22 Numerical constant to convert disintegrations per minute to picocuries.

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

Counting time in minutes.

1.96 Statistical constant for the 95% confidence level.

Chemical recovery or photon yield.

6.2 Isoto ic Detection Limits and Activi Determinations ASU 6.2.1 Lower Levels of Detectio The Lower Limits of Detection (LLD) and the methods for calculation are specified in Table 4.12-1 of the PVNGS Technical Specifications.

6.2.2 Errors are reported as + 1 sigma (plus or minus one sigma).

Gamma isotopic errors are reported as % + 1 sigma (plus or minus one sigma expressed as a percentage) and are counting errors only. For all other data uncertainties expressed are the result of the propagation of all known sources of error.

7 0

~

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

1. 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 Appendices A and B for EPA Radiological Cross-check results.)

7.2 7.2.1 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, an additional intercomparison was provided by the U.S. Nuclear Regulatory Commission (USNRC).

'I EPA intercomparison results are listed in Appendix C. Gamm 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. Results are in Appendix C.

A charcoal canister was spiked with iodine (1-131) by Analyti.cs, Inc., Atlanta, Georgia and sent to the RMF for assay. Results are in Appendix C.

Cl '26-

THIS PAGE INTENTIONALLY BLANK TABLE III ALI UOT SCANNED FOR DETECTION LIMIT CALCULATION AND ACTUAL ANALYSIS S le e Air Particulates 265 m (a) 265 m (a) 265 m (a)

Airborne Radioiodine 265 m~(a)

Domestic Meats 500 g(a)

(Beef)

Fresh Milk 1000 mls(a) 2000 mls(a) 2000 mls(a) 2000 mls(a) 500 mls(b) 2000 mls(b)

I Vegetation (Citrus Fruits) 500 g(a)

I Vegetation (Leafy) 500 g(a) 100 g(a)

Groundwater 1000 mls(a) 1000 mls(a) 1000 mls(a) 1000 mls(a) 3 ml(a) 250 mls(b) 250 mls(b) 500 mls(b) 2000 mls(b) 10 ml(b)

Drinking Water 1000 mls(a) 1000 mls(a) 1000 mls(a) 1000 mls(a) 3 ml(a) 250 mls(b) 250 mls(b) 500 mls(b) 2000 mls(b) 10 ml(b)

Surface Water 1000 mls(a) 1000 mls(a) 1000 mls(a) 1000 mls(a) 1000 mls(a) 1000 mls(a) 3 ml(a) 250 mls(b) 250 mls(b) 500 mls(b) 2000 mls(b) 2000 mls(b) 2000 mls(b) 10 ml(b)

(a) CEP data (b) ASU data. Typical times between collection and counting are 2-4 days (milk) and 1-3 days (water).

TABLE IV SAMPLE COUNTING TIMES S le e Air Particulates 100 min(a) 100 min(a) 8 hrs(a)

Airborne Radioiodine 8 hrs*(a)

Domestic Meats 8 hrs(a)

(Beef)

Fresh Milk 8 hrs(a) 100 min(a) 100 min(a) 100 min(a) 8 hrs(b) 300 min(b)

Vegetation (Citrus Fruits) 8 hrs(a)

I Vegetation (Leafy) 8 hrs(a) 100 min(a)

Groundwater 100 min(a) 100 min(a) 8 hrs(a) 100 min(a) 50 min(a) 200 min(b) 8 hrs(b) 300 min(b) 100 min(b)

Drinking Water 100 min(a) 100 min(a) 8 hrs(a) 100 min(a) 50 min(a) 200 min(b) 8 hrs(b) 300 min(b) 100 min(b)

Surface Water 100 min(a) 100 min(a) 8 hrs(a) 100 min(a) 100 min(a) 100 min(a) 50 min(a) 200 min(b) 8 hrs(b) 300 min(b) 100 min(b) 300 min(b) 100 min(b)

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

DETECTION LIMITS BY OTHER THAN GAMMA SPECTROMETRY S le e Gross Al ha Gross Beta Iodine-131 Strontium-89 Strontium-90 Tritium Air Particulates 0,005 pCi/m (a) 0.002 pCi/m (a)

Airborne Radioiodine 0.007 pCi/m **(a)

Fresh Milk 0.5 pCi/L(a) 1.0 pCi/L(a) 0.5 pCi/L(a) 0.5 pCi/L(b)

Vegetation (Leafy) 20 pCi/kg*(a)

Vegetation (Animal feed) 100 pCi/kg(a) 50 pCi/kg(a)

Groundwater 1.0 pCi/L(a) 2. 0 pCi/L(a) 0.5 pCi/L(a) 1000 pCi/L(a)

I 4.0 pCi/L(b) 0.5 pCi/L(b) 1000 pCi/L(b)

Drinking Water 1.0 pCi/L(a) 2.0 pCi/L(a) 0.5 pCi/L(a) 1000 pCi/L(a) 4.0 pCi/L(b) 0.5 pCi/L(b) 1000 pCi/L(b)

Surface Water 1.0 pCi/L(a) 2.0 pCi/L(a) 0.5 pCi/L(a) 1.0 pCi/L(a) 0.5 pCi/L(a) 1000 pCi/L(a) 4.0 pCi/L(b) 0.5 pCi/L(b) 1.0 pCi/L(b) 0.5 pCi/L(b) 1000 pCi/L(b)

+As Wet Weight

~Alkaline Leach Method. I-131 Detection Limit by Gamma Spectrometry 0.020 pCi/m (a) CEP data (b) ASU data. Typical times between collection and counting are 2-4 days (milk) and 1-3 days (water).

TABLE DETECTION LIMITS BY GAMMA SPECTROMETRY Sensitivity pCi/1+ (a)

(a) Groundwater, Sensitivity Sensitivity Drinking Water Sensitivity pCi/m3* (b) nergy pCi/k+ and pCi/1+ Air Detector MeV Isoto e Surface Water Fresh Milk Particulate ~Efficiecc

.364 Iodine-131 1(a), -(a) 0.020 0.015 8 (b) 8(b)

.537 Barium-140 75 4(a) 4(a) 0.030 0.010 30(b) 34(b)

.605 Cesium-134 29 10(a) 10(a) 0.001 0.0091 8(b) 9(b)

.662 Cesium-137 56 2(a) 2(a) 0.001 0.0083 10(b) 10 (b)

.765 Zr, Nb-95 66 8 (a) 8(a) 0.026 0.0072 17,11(b) 17,11(b)

.81 Cobalt-58 20 5(a) 3(a) 0. 001 0.0068 8(b) 9(b)

.835 Manganese-54 21 2(a) .2(a) 0.001 0.0066 8(b) 9(b)

.095 Iron-59 21 3 (a) 3(a) 0.006 0.0051 17 (b) 22(b)

.115 Zinc-65 60 16 (a) 16 (a) 0.045 0.0050 19 (b) 24(b)

.173 Cobalt-60 63 5 (a) 5(a) 0.019 0.0047 9(b) 10 (b)

.596 Lanthanum-140 465 4(a) 4(a) 0.030 0.0036 10(b) 12(b)

See Table III for aliquots used in the calibration of these sensitivities.

a) CEP data.

) ASU data.

I 8.0 Data Inte retation and Conclusions Interpretations and conclusions regarding all types of samples analyzed during 1987 are 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. The twelve sites are 1A, 4A, 6A, 7A, 14A, 15A, 17A, 21A, 29A, 35A, 40A and 44A. 6A is the control site.

Air filters were analyzed for Gross Alpha and Gross Beta activities.

Gamma Spectral analysis of the air filters was done on the individual filters for Stations 14A, 15A, 17A, 21A, 29A and 40A due to the Salt Drift Monitoring Program. Gamma Spectral analysis for the other stations was performed on quarterly composites by station.

Thirty-four air particulate samples were invalid. The samples and the reason for the statuses are listed below:

First uarter 1987 Date Collected Site ¹ Reason 01/07/87 7A Redline exceeded 02/04/87 15A Low total flow 03/18/87 4A Excessive flow rate 03/25/87 6A(Control) Excessive flow rate Second uarter 1987 Date Collected Site ¹ Reason 04/15/87 6A(Control) Excessive flow rate 06/10/87 6A(Control) Excessive flow rate 06/17/87 1A,44A Redline exceeded Date

~les,~i 07/21/87 35A Sampler malfunction 07/28/87 14A,17A Loss of power 07/28/87 35A ETM malfunction 08/04/87 7A,17A Pump malfunction 09/01/87 lA, 17A, 44A Redline exceeded 09/08/87 40A Redline exceeded 09/15/87 1A,4A,17A,44A Redline exceeded 09/22/87 1A,17A,44A Redline exceeded Date 10/06/87 1A I 4A, 17A,44A Redline exceeded 10/27/87 1A Redline exceeded 10/27/87 21A ETM malfunction 11/24/87 35A Redline exceeded 12/15/87 .40A ETM malfunction 12/29/87 1A Redline exceeded Table VII presents first quarter Gross Beta results. Station 6A showed the highest activity during the quarter (0.047 i0.002 pCi/m~) collected 01/07/87. Station 6A showed the lowest activity (0.012 20.002 pCi/m~)

collected on 02/18/87. Weekly mean activities ranged from a low of 0.014 i0.002 pCi/m~ during the week of 02/ll/87-02/18/87 to a high of 0.043 i0.002 pCi/m~ in the week of 12/30/86-01/07/87. The range of results is comparable to previous quarterly data and does not indicate any anomalies.

Table VIII presents second quarter Gross Beta results. Several stations showed the highest activity during the quarter of 0.031 i0.002 pCi/m~.

The Station 6A sample collected 06/10/87-06/17/87 showed the lowest level at 0.017 20.002 pCi/m~. Weekly mean activities ranged from a low of 0.020 pCi/m~ during the periods of 04/Ol/87-04/08/87 and 06/10/87-06/17/87 to a high of 0.029 20.001 pCi/m~ in the weeks of 05/13/87-05/20/87 and 05/27/87-06/03/87. The range of results is comparable t previous quarterly data and does not indicate any anomalies.

Table IX presents the Gross Beta levels during the third quarter of 1987. The lowest value of 0.015 20.002 pCi/m~ was observed at station 44A collected during the week of 08/11/87-08/18/87. The hi,ghest level of activity was 0.040 20.002 pCi/m~ 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/m~ (08/ll/87-08/18/87), to a maximum of 0.037 20.002 pCi/m in the period of 09/15/87-09/22/87. The range of results is comparable to pervious quarterly data and does not indicate any anomalies.

Table X presents the Gross Beta activities seen in the fourth quarter.

Observed levels varied from 0.016 i0.002 pCi/m~ at Station 40A (collected ll/03/87-11/10/87), to 0.055 i0.003 pCi/ms at several stations collected on 11/24/87-12/Ol/87. Weekly mean activities ranged from 0.019 20.002 pCi/m~ during the collection period of 11/03/87-11/10/87 to 0.050 XO.OO collected 11/24/87-12/01/87. 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 0.024 i0.006 at several stations during the year, to a high of 0.038 20.009. pCi/m at Station 21A in the fourth quarter.

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

First Quarter 1987 0.028 +0.001 Second Quarter 1987 0.025 %0.001 Third Quarter 1987 0.026 20.001 Fourth Quarter 1987 0.034 t0.003 No man-made Gamma-emitting nuclides were detected in any of the air filter samples collected during 1987.

Tables XII thru XV show the Gross Alpha activity for each week during 1987. Gross Alpha activity was detected in five samples collected in 1987. These data are consistent with the activity seen during preoperational monitoring.

(Control) 6 12/30/86 - 01/07/87 0.044+0.002 0.044+0.002 0.047+0.002 0.039+0.002 0.041+0.002 0.043+0.002 01/07/87 - 01/14/87 0.029+0.002 0.030+0.002 0.032+0.002 0.037+0.002 0.034+0.002 0.032+0.002 0.034+0.002 01/14/87 - 01/21/87 0.039+0.002 0.042+0.002 0.043+0.002 0.041+0.002 0.039+0.002 0.044+0.002 0.041+0.002 01/21/87 - 01/28/87 0.038+0.002 0.037+0.002 0.039+0.002 0.041+0.002 0.035+0.002 0.035+0.002 0.033+0.002 Ol/28/87 - 02/04/87 0.033+0.002 0.032+0.002 0.035+0.002 0.036+0.002 0.036+0.002 0.034+0.002 0 02/04/87 - 02/11/87 0.024+0.002 0.026+0.002 0.023+0.002 0.025+0.002 0.024+0.002 0.027+0.002 0.024+0.002 02/11/87 - 02/18/87 0.013+0.002 0.014+0.002 0.012+0.002 0.015+0.002 0.014+0.002 0.013+0.002 0.013+0.002 02/18/87 - 02/25/87 0.018+0.002 0.019+0.002 0.018+0.002 0.018+0.002 0.019+0.002 0.018+0.002 0.018+0.002 02/25/87' 03/04/87 0.022+0.002 0.027+0.002 0.025+0.002 0.037+0.002 0.026+0.002 0.025+0.002 0.028+0.002 03/04/87 - 03/11/87 0.032+0.002 0.031+0.002 0.029+0.002 0.032+0.002 0.020+0.002 0.024+0.002 0.024+0.002 03/11/87 - 03/18/87 0.021+0.002 0.021+0.002 0.021+0.002 0.020+0.002 0.018+0.002 0.016+0.002 03/18/87 - 03/25/87 0.017+0.002 0.018+0.002 0.015+0.002 0.015+0.002 0.015+0.002 0.015+0.002 03/25/87 - 04/01/87 0.022+0.002 0.025+0.002 0.024+0.002 0.023+0.002 0.024+0.002 0.024+0.002 0.021+0.002 (a)CEP data

~Invalid Sample

XuGiZaM Weekly Mean Gross Beta Activities

+Standard Deviation 12/30/86 - 01/07/87 0.044+0.002 0.044+0.'002 0.039+0.002 0.042+0.002 0.041+0.002 0.043+0.002 01/07/87 - 01/14/87 0.034+0.002 0.033+0.002 0.032+0.002 0.033+0.002 0.026+0.002 0.032+0.003 01/14/87 - 01/21/87 0.042+0.002 0.042+0.002 0.040+0.002 0.044+0.002 0.043+0.002 0.042+0.002 01/21/87 - 01/28/87 0.040+0.002 0.039+0.002 0.035+0.002 0.037+0.002 0.032+0.002 0.037+0.003 01/28/87 - 02/04/87 0.036+0.002 0.037+0.002 0.036+0.002 0.035+0.002 0.027+0.002 0.034+0.003 02/04/87 - 02/11/87 0.027+0.002 0.028+0.002 0.023+0.002 0.025+0.002 0.026+0.002 0.025+0.002 02/11/87 - 02/18/87 0.014+0.002 0.014+0.002 0.014+0.002 0.017+0.002 0.018+0.002 0.014+0.002 02/18/87 - 02/25/87 0.019+0.002 0.019+0.002 0.016+0.002 0.021+0.002 0.018+0.002 0.018+0.001 02/25/87 - 03/04/87 0 '25+0.002 0.025+0.002 0.026+0.002 0.023+0.002 0.027+0.002 0.026+0.004 03/04/87 - 03/11/87 0.037+0.002 0.036+0.002 0.031+0.002 0.036+0.002 0.025+0.002 0.030+0.005 03/11/87 - 03/18/87 0.020+0.002 0.019+0.002 0.016+0.002 0.019+0.002 0.019+0.002 0.019+0.002 03/18/87 - 03/25/87 0.015+0.002 0.015+0.002 0.016+0.002 0.013+0.002 0.015+0.002 0.015+0.001 03/25/87 - 04/01/87 0.022+0.002 0.022+0.002 0.022+0.002 0.021+0.002 0.019+0.002 0.022+0.002 (a)CEP data

Q)~Cg~~

(Control) 04/01/87 - 04/08/87 0.020+0.002 0.020+0.002 0.018+0.002 0.019+0.002 0.020+0.002 0.019+0.002 0.018+0.002 04/08/87 - 04/15/87 0.025+0.002 0.030+0.002 0.026+0.002 0.028+0.002 0.028+0.002 0.025+0.002 04/15/87 - 04/22/87 0.024+0.002 0.026+0.002 0.023+0.002 0.026+0.002 0.026+0.002 0.027+0.002 0.021+0.002 04/22/87 - 04/29/87 0.026+0.002 0.024+0.002 0.023+0.002 0.024+0.002 0.024+0.002 0.027+0.002 0.025+0.002 04/29/87 - 05/06/87 0.023+0.002 0.026+0.002 0.024+0.002 0.026+0.002 0.023+0.002 0.025+0.002 0.023+0.002 I

00 05/06/87 - 05/13/87 0.024+0.002 0.026+0.002 0.024+0.002 0.025+0.002 0.026+0.002 0.023+0.002 0.024+0.002 I

05/13/87 - 05/20/87 0.029+0.002 0.031+0.002 0.031+0.002 0.030+0.002 0.028+0.002 0.028+0.002 0.029+0.002 05/20/87 - 05/27/87 0.027+0.002 0.028+0.002 0.030+0.002 0.025+0.002 0.025+0.002 0.024+0.002 0.026+0.002 05/27/87, - 06/03/87 0.026+0.002 0.029+0.002 0.029+0.002 0.029+0.002 0.030+0.002 0.031+0.002 0.030+0.002 06/03/87 - 06/10/87 0.024+0.002 0.022+0.002 0.028+0.002 0.024+0.002 0.023+0.002 0.023+0.002 06/10/87 - 06/17/87 0.019+0.002 0.017+0.002 0.020+0.002 0.019+0.002 0.020+0.002 0.020+0.002 06/17/87 - 06/24/87 0.026+0.002 0.023+0.002 0.023+0.002 0.027+0.002 0.021+0.002 0.024+0.002 0.026+0.002 06/24/87 - 07/01/87 0.022+0.002 0.022+0.002 0.022+0.002 0.026+0.002 0.026+0.002 0.021+0 002

~ 0.023+0.002

~Invalid Sample (a)CEP data

TAB I Cont.

GROSS BETA IN AIR PARTICULATE DATA a SECOND UARTER 1987 g)~Ci ~~m3 Weekly Mean Gross Beta Activities

+Standard Deviation Collection Period Station 21A Station 29A Station 35A Station 40A Station 44A of the Mean 04/01/87 - 04/08/87 0.023i0.002 0.019i0.002 0.021+0.002 0.019i0.002 0.018+0.002 0.020i0.001 04/08/87 - 04/15/87 0.026i0.002 0.027i0.002 0.023i0.002 0.027+0.002 0.025i0.002 0.026i0.002 s 04/15/87 - 04/22/87 0.025i0.002 0.025i0.002 0.02510.002 0.026i0.002 0.025+0.002 0.025+0.002 04/22/87 - 04/29/87 0.024i0.002 0.02410.002 0.026+0.002 0.024i0.002 0.024i0.002 0.025i0.001 04/29/87 - 05/06/87 0.025i0.002 0.026i0.002 0.025+0.002 0.025i0.002 0.024i0.002 0.025i0.001 05/06/87 - 05/13/87 0.024i0.002 0.024i0.002 0.025+0.002 0.027i0.002 0.022i0.002 0.025i0.001 05/13/87 - 05/20/87 0.031i0.002 0.030i0.002 0.027i0.002 0.029i0.002 0.029i0.002 0.029i0.001 05/20/87 - 05/27/87 0.025i0.002 0,028i0.002 0.023i0.002 0.025i0.002 0.030+0.002 0.026i0.002 05/27/87 - 06/03/87 0.028i0.002 0.030i0.002 0.031i0.002 0.028i0.002 0.028i0.002 0.029i0.001 06/03/87 - 06/10/87 0.023i0.002 0.023+0.002 0.027+0.002 0.024i0.002 0.025i0.002 0.024+0.002 06/10/87 - 06/17/87 0.020i0.002 0.023i0.002 0.018i0.002 0.019i0.002 0.020i0.002 06/17/87 - 06/24/87 0.024i0.002 0.024+0.002 0.023i0.002 0.024+0.002 0.024+0.002 0.024+0.002 06/24/87 - 07/01/87 0.023+0.002 0.021+0.002 0.024i0.002 0.024+0.002 0.022i0.002 0.023+0.002 (a)CEP data

~Invalid Sample

(Control) 07/01/87 - 07/07/87 0.027+0.002 0.028+0.002 0.028+0.002 0.028+0.002 0.028+0.002 0.031+0.002 0.033+0.002 07/07/87 - 07/14/87 0.023+0.002 0.021+0.002 0.021+0.002 0.022+0.002 0.022+0.002 0.023+0.002 0.025+0.002 07/14/87 - 07/21/87 0.021+0.002 0.020+0.002 0.019+0.002 0.020+0.002 0.020+0.002 0.024+0.002 0.020+0.002 07/21/87 - 07/28/87 0.019+0.002 0.020+0.002 0.017+0.002 0.022+0.002 0.023+0.002 07/28/87 - 08/04/87 0.020+0.002 0.018+0.002 0.021+0.002 0.020+0.002 0.025+0.002 o 08/04/87 - 08/11/87 0.026+0.002 0.025+0.002 0.026+0.002 0.024+0.002 0.025+0.002 0.026+0.002 0.026+0.002 08/11/87 - 08/18/87 0.018+0.002 0.018+0.002 0.024+0.002 0.016+0.002 0.019+0.002 0.017+0.002 0.021+0.002 08/18/87 - 08/25/87 0.026+0.002 0.025+0.002 0.028+0.002 0.026+0.002 0.029+0.002 0.024+0.002 0.027+0.002 08/25/87. - 09/01/87 0.032+0.002 0.032+0.002 0.033+0.002 0.031+0.002 0.032+0.002 09/01/87 - 09/08/87 0.034+0.002 0.035+0.002 0.033+0.002 0.029+0.002 0.033+0.002 0.036+0.002 0.035+0.002 09/08/87 - 09/15/87 0.026+0.002 0.027+0.002 0.024+0.002 0.027+0.002 09/15/87 - 09/22/87 0.037+0.002 0.038+0.002 0.037+0.002 0.037+0.002 0.035+0.002 09/22/87 - 09/29/87 0.026+0.002 0.025+0.002 0.033+0.002 0.027+0.002 0.028+0.002 0.031+0.002 0.030+0.002

~Invalid Sample (a)CEP data

TA Cont.

GROSS BETA IN AIR PARTICULATE DATA a 1987

~Comm~

Weekly Mean Gross Beta Activities XStandard Deviation Collection Period Station 21A Station 29A Station 35A Station 40A Station 44A of the Mean 07/01/87 - 07/07/87 0.027%0.002 0.02920.002 0.031+0.002 0.030i0.002 0.03120.002 0.029i0.002 07/07/87 - 07/14/87 0.023%0.002 0.02120.002 0.02910.002 0.02220.002 0.02220.002 0.02310.002 07/14/87 - 07/21/87 0.02210.002 0.02420.002 0.01620.002 0.01920.002 0.020i0.002 07/21/87 - 07/28/87 0.020i0.002 0.020i0.002 0.017i0.002 0.02520.002 0.020i0.003 07/28/87 - 08/04/87 0.020%0.002 0.023i0.002 0.02020.002 0.01910.002 0.01820.002 0.020i0.002 08/04/87 - 08/11/87 0.023i0.002 0.024i0.002 0.02620.002 0.02520.002 0.02810.002 0.02520.001 08/11/87 - 08/18/87 0.01810.002 0.016i0.002 0.01810.002 0.01820.002 0.01510.002 0.018%0.002 08/18/87 - 08/25/87 0.032%0.002 0.02720.002 0.02820.002 0.026%0.002 0.026%0.002 0.02720.002 08/25/87 - 09/01/87 0.031%0,002 0.034i0.002 0.030i0.002 0.027+0.002 0.03120.002 09/01/87 - 09/08/87 0.035i0.002 0.03410.002 0.03820.002 0.032%0.002 0.03420.002 09/08/87 - 09/15/87 0.02510.002 0.02920.002 0.026+0.002 0.02620.002 0.026+0.001 09/15/87 - 09/22/87 0.035i0.002 0.04020.002 0.03310.002 0.037+0.002 0.037%0.002 09/22/87 - 09/29/87 0.03120.002 0.03120.002 0.027i0.002 0.02420.002 0.022+0.002 0.02810.003

~Invalid Sample (a)CEP data

(Control) 09/29/87 - 10/06/87 ** 0.041+0.002 0.040+0.002 0.042+0.002 0.041+0.002 10/06/87 - 10/13/87 0.038+0.002 0.034+0.002 0.038+0.002 0.037+0.002 0.038+0.002 0.040+0.002 0.039+0.002 10/13/87 - 10/20/87 0.035+0.002 0.038+0.002 0.036+0.002 0.042+0.002 0.046+0.002 0.039+0.002 0.043+0.002 10/20/87 - 10/27/87 ** 0.024+0.002 0.025+0.002 0.024+0.002 0.026+0.002 0.029+0.002 0.026+0.002 I

10/27/87 - 11/03/87 0.021+0.002 0.024+0.002 0.020+0.002 0.021+0.002 0.020+0.002 0.034+0.002 0.025+0.002 I

11/03/87 - 11/10/87 0.021+0.002 0.018+0.002 0.018+0.002 0.019+0.002 0.019+0.002 0.018+0.002 0.018+0.002 11/10/87 - 11/17/87 (d) 0.033+0.002 0.034+0.002 0.037+0.002 0.038+0.002 0.036+0.002 0.042+0.002 11/17/87 - 11/24/87 (d) 0.026+0.002 0.032+0.002 0.031+0.002 0.029+0.002 0.025+0.002 0.027+0.002 11/24/87. - 12/01/87 (d) 0.041+0.002 0.050+0.002 0.055+0.003 0.052+0.003 0.042+0.002 0.052+0.002 12/01/87 - 12/08/87 (d) 0.042+0.002 0.047+0.002 0.047+0.003 0.043+0.002 0.044+0.002 0.042+0.002 12/08/87 - 12/15/87 (d) 0.031+0.002 0.039+0.002 0.035+0.002 0.028+0.002 0.029+0.002 0.032+0.002 12/15/87 - 12/22/87 (d) 0.033+0.002 0.030+0.002 0.037+0.002 0.035+0.002 0.030+0.002 0.032+0.002 12/22/87 - 12/29/87 0.028+0.002 0.035+0.002 0.036+0.002 0.034+0.002 0.038+0.002 0.032+0.002 (a)CEP data

~Invalid Sample (d)Sample not collected

TA Cont.

GROSS BETA IN AIR PARTICULATE DATA a 1987

~Ci~ms Weekly Mean Gross Beta Activities

%Standard Deviation Collection Period Station 21A Station 29A Station 35A Station 40A Station 44A of the Mean 09/29/87 - 10/06/87 0.041%0.002 0.041%0.002 0.041i0.002 0.03910.002 0.04110.001 10/06/87 - 10/13/87 0.04520.002 0.041%0.002 0.041~0.002 0.05320.002 0.03620.002 0.04010.005 4- 10/13/87 - 10/20/87 0.04220.002 0.04410.002 0.03820.002 0.04220.002 0.03610.002 0.04010.004 I

10/20/87 - 10/27/87 0.02910.002 0.02920.002 0.02610.002 0.03120.002 0.02710.002 10/27/87 - 11/03/87 0.02210.002 0.021%0.002 0.021%0.002 0.018i0.002 0.01810.002 0.02210.004 11/03/87 - 11/10/87 0.02110.002 0.01710.002 (d) 0.01620.002 (d) 0.01910.002 11/10/87 - 11/17/87 0.042%0.002 0.03920.002 0.03320.002 0.03810.002 (d) 0.03720.003 11/17/87 - 11/24/87 0.034%0.002 0.032i0.002 0.03120.002 (d) 0.030i0.003 11/24/87 - 12/01/87 0.05510.003 0.05520.003 0.048+0.003 0.05120.003 (d) 0.050%0.005 12/01/87 - 12/08/87 0.043%0.002 0.052i0.002 0.041+0.002 0.052+0.003 (d) 0.045i0.004 12/08/87 - 12/15/87 0.041%0.003 0.032i0.002 0.028f0.002 (d) 0.03320.005 12/15/87 - 12/22/87 0.036i0.002 0.038i0.002 0.035i0.002 0.03710.002 (d) 0.034%0.003 12/22/87 - 12/29/87 0.036%0.002 0.032i0.002 0.031+0.002 0.03420.002 (d) 0.03420.003 (a)CEP data

~Invalid Sample (d)Sample not collected

TABLE XI GROSS BETA IN AIR PARTICULATE DATA a STATION

SUMMARY

1987

~Ci~m3 Mean Activit First Second Third Fourth Station uarter uarter uarter uarter 0.027 20.010 0.025 20.002 0.024 20.005 0.029 20.009 4A 0.029 i0.009 0.025 R0.004 0.025 20.006 0.031 i0.007 6A(Control) 0.029 i0.011 0.024 +0.004 0.027 i0.006 0.034 +0.009 7A 0.028 +0.010 0.025 +0.003 0.026 i0.006 0.035 i0.011 14A 0.027 i0.009 0.025 20.003 0.026 i0.006 0.035 +0.010 15A 0.026 20.010 0.025 20.004 0.027 20.005 0.034 +0.008 17A 0.026 +0.010 0.024 20.003 0.027 i0.005 0.034 20.010 21A 0.029 20.011 0.025 20.003 0.026 20.006 0.038 +0.009 29A 0.029 20.010 0.025 20.003 0.027 20.007 0.036 i0.011 35A 0.027 20.009 0.024 20.003 0.028 20.006 0.035 +0.008 40A 0.028 X0.010 0.025 X0.003 0.024 20.006 0.036 20.012 44A 0.026 20.009 0.025 20.003 0.024 20.006 0.030 i0.009 (a) CEP data XII GROSS ALPHA IN AIR PARTICULATE DATA a 1987

~Cpm~

(Control)

Collection Period Station 1A Station 4A Station 6A 12/30/86 - 01/07/87 <LLD <LLD <LLD <LLD Ol/07/87 - Ol/14/87 <LLD 01/14/87 - 01/21/87 <LLD <LLD <LLD <LLD 01/21/87 - 01/28/87 01/28/87 - 02/04/87 <LLD <LLD 02/04/87 - 02/11/87 <LLD <LLD 02/11/87 - 02/18/87 <LLD <LLD <LLD <LLD 02/18/87 - 02/25/87 <LLD <LLD <LLD 02/25/87 - 03/04/87 <LLD <LLD <LLD <LLD <LLD 03/04/87 - 03/11/87 <LLD <LLD <LLD <LLD <LLD <LLD 03/11/87 - 03/18/87 <LLD <LLD <LLD 03/18/87 - 03/25/87 <LLD <LLD <LLD <LLD <LLD 03/25/87 - 04/01/87 <LLD <LLD <LLD <LLD <LLD

~Invalid Sample (a)CEP data

TABLE XII Cont.

GROSS ALPHA IN AIR PARTICULATE DATA a 1987 Q)~Ci <~ra~

Collection Period Station 21A Station 29A Station 35A Station 40A Station 44A 12/30/86 - 01/07/87 <LLD 0.005+0.001 01/07/87 - 01/14/87 <LLD <LLD <LLD 01/14/87 - 01/21/87 <LLD 01/21/87 - 01/28/87 <LLD <LLD <LLD <LLD <LLD 01/28/87 - 02/04/87 <LLD <LLD <LLD 02/04/87 - 02/11/87 <LLD <LLD <LLD <LLD 02/11/87 - 02/18/87 <LLD 02/18/87 - 02/25/87 <LLD 02/25/87 - 03/04/87 <LLD <LLD <LLD 03/04/87 - 03/11/87 0.005i0.001 <LLD 0.006i0.001 03/11/87 - 03/18/87 <LLD <LLD <LLD <LLD 03/18/87 - 03/25/87 <LLD <LLD <LLD <LLD 03/25/87 - 04/01/87 <LLD <LLD <LLD <LLD <LLD (a)CEP data

T III CROSS ALPHA IN AIR PARTICULATE DATA a 1987 Q~Ci ~m~

(Control)

Collection Period Station 1A Station 4A Station 6A 04/01/87 - 04/08/87 <LLD <LLD 04/08/87 - 04/15/87 <LLD <LLD <LLD 04/15/87 - 04/22/87 <LLD <LLD <LLD <LLD 04/22/87 - 04/29/87 <LLD <LLD <LLD <LLD <LLD 04/29/87 - 05/06/87 <LLD <LLD <LLD <LLD <LLD <LLD 05/06/87 - 05/13/87 <LLD <LLD <LLD <LLD 05/13/87 - 05/20/87 <LLD <LLD <LLD <LLD <LLD 05/20/87 - 05/27/87 <LLD <LLD <LLD 'LLD <LLD <LLD 05/27/87 - 06/03/87 <LLD <LLD <LLD <LLD 06/03/87 - 06/10/87 <LLD <LLD <LLD <LLD 06/10/87 - 06/17/87 <LLD 06/17/87 - 06/24/87 <LLD <LLD <LLD 06/24/87 - 07/01/87 <LLD <LLD <LLD

~Invalid Sample (a)CEP data

TABLE XIII Cont.

GROSS ALPHA IN AIR PARTICULATE DATA a 1987 Q)~Ci ~~m~

Collection Period Station 21A Station 29A Station 35A Station 40A Station 44A 04/01/87 - 04/08/87 <LLD <LLD <LLD 04/08/87 - 04/15/87 <LLD <LLD <LLD <LLD 04/15/87 - 04/22/87 <LLD <LLD <LLD <LLD <LLD 04/22/87 - 04/29/87 <LLD <LLD <LLD <LLD 04/29/87 - 05/06/87 <LLD <LLD <LLD <LLD <LLD 05/06/87 - 05/13/87 <LLD <LLD <LLD <LLD 05/13/87 - 05/20/87 <LLD <LLD <LLD <LLD 05/20/87 - 05/27/87 <LLD <LLD <LLD <LLD 05/27/87 - 06/03/87 <LLD <LLD <LLD 06/03/87 - 06/10/87 <LLD <LLD <LLD <LLD 06/10/87 - 06/17/87 <LLD <LLD 06/17/87 - 06/24/87 <LLD <LLD 06/24/87 - 07/01/87 <LLD <LLD <LLD

~Invalid Sample (a)CEP data

~XIV GROSS ALPHA IN AIR PARTICULATE DATA a 1987 Q)~Ci ~~m3 (Control)

Collection Period Station 1A Station 4A Station 6A 07/01/87 - 07/07/87 <LLD <LLD <LLD <LLD <LLD <LLD 07/07/87 - 07/14/87 <LLD <LLD <LLD <LLD <LLD <LLD 07/14/87 - 07/21/87 <LLD <LLD <LLD <LLD <LLD <LLD 07/21/87 - 07/28/87 <LLD <LLD <LLD 07/28/87 - 08/04/87 <LLD 08/04/87 - 08/11/87 <LLD <LLD 08/11/87 - 08/18/87 <LLD <LLD <LLD <LLD 08/18/87 - 08/25/87 <LLD <LLD <LLD <LLD 08/25/87 - 09/01/87 <LLD 09/01/87 - 09/08/87 <LLD <LLD <LLD <LLD <LLD <LLD 09/08/87 - 09/15/87 <LLD <LLD <LLD <LLD 09/15/87 - 09/22/87 <LLD <LLD <LLD 09/22/87 - 09/29/87 <LLD <LLD <LLD <LLD <LLD <LLD

~Invalid Sample (a)CEP data

TABLE XIV Cont GROSS ALPHA IN AIR PARTICULATE DATA a 1987

~Ci~m3 Collection Period Station 21A Station 29A Station 35A Station 40A Station 44A 07/01/87 - 07/07/87 <LLD <LLD 07/07/87 - 07/14/87 <LLD <LLD <LLD <LLD 07/14/87 - 07/21/87 <LLD <LLD 07/21/87 - 07/28/87 <LLD <LLD <LLD 07/28/87 - 08/04/87 <LLD <LLD 08/04/87 - 08/11/87 08/11/87 - 08/18/87 08/18/87 - 08/25/87 <LLD 08/25/87 - 09/01/87 09/01/87 - 09/08/87 <LLD 09/08/87 - 09/15/87 <LLD <LLD 09/15/87 - 09/22/87 <LLD <LLD 09/22/87 - 09/29/87 <LLD <LLD

~Invalid Sample (a)CEP data

GROSS ALPHA IN AIR PARTICULATE DATA a 1987 Q)~Ci ~~m3 Collection Period 09/29/87 - 10/06/87 Station 1A Station 4A (Control)

Station 6A

<LLD <LLD

<LLD

"'>> ~*

10/06/87 - 10/13/87 <LLD <LLD <LLD <LLD <LLD <LLD <LLD 10/13/87 - 10/20/87 <LLD <LLD <LLD <LLD <LLD 10/20/87 - 10/27/87 <LLD <LLD 10/27/87 - 11/03/87 <LLD <LLD 0.00810.002

<LLD 0.007i0.001 11/03/87 - 11/10/87 <LLD 11/10/87 - 11/17/87 (d) <LLD 11/17/87 - 11/24/87 (d) <LLD <LLD <LLD 11/24/87 - 12/01/87 (d) <LLD <LLD 12/01/87 - 12/08/87 (d) <LLD <LLD <LLD <LLD <LLD <LLD 12/08/87 - 12/15/87 (d) <LLD <LLD <LLD <LLD <LLD <LLD 12/15/87 - 12/22/87 (d) <LLD <LLD <LLD <LLD <LLD <LLD 12/22/87 - 12/29/87 <LLD <LLD <LLD <LLD <LLD

~Invalid Sample (a)CEP data (d)Sample not collected

TABLE XV Cont.

GROSS ALPHA IN AIR PARTICULATE DATA a 1987

~Comm~

Collection Period Station 21A Station 29A Station 35A Station 40A Station 44A 09/29/87 - 10/06/87 <LLD <LLD 10/06/87 - 10/13/87 <LLD 10/13/87 - 10/20/87 <LLD 10/20/87 - 10/27/87 <LLD 10/27/87 - 11/03/87 <LLD <LLD 11/03/87 - 11/10/87 <LLD <LLD (d) (d) 11/10/87 >> 11/17/87 <LLD <LLD <LLD. <LLD (d) 11/17/87 - 11/24/87 <LLD (d) 11/24/87 - 12/01/87 <LLD (d) 12/01/87 - 12/08/87 <LLD <LLD <LLD (d) 12/08/87 - 12/15/87 <LLD <LLD (d) 12/15/87 - 12/22/87 <LLD <LLD <LLD (d) 12/22/87 - 12/29/87 <LLD <LLD <LLD <LLD (d)

~lmralid Sample (a)CEP data (d)Sample not collected

C ~

c

~ ~

I Ak ~ t ~ vl -a Figure 3 GROSS BETA IN AIR PARTICULATES V/EEKLY ACTIVITY-) 987 STATION 1A

.100

.075

.025 26 52 SEEK

Figure 4 GROSS BETA IN AIR PARTICULATES V/EEKLY ACTIVITY-1987 STATION 4A

.075 4

0CL

.050

.025

Figure 5 GROSS BETA IN AIR PARTICULATES WEEKLY ACTIYITY-1 987 STATION BA

.100

.075 LA Ln C3 O

.050 I

I D

.025 0

52

Figure 6 GROSS HETA IN AIR PARTICULATES V/EEKLY ACTIVITY-) 987 STATION 7A

.100

.075 va Q O

CL

.050 0"

I (3

.025

Figure 7 GROSS BETA IN AIR PARTICULATES WEEKLY 'ACTIYITY-1987 STATION )4A

.100

.075 Ln CL

.050 0-I I

(3

.025 26 VfEEK

Figure 8 GROSS BETA IN AlR PARTICULATES V/MEEKLY ACTlVITY-1 987 STATION 15A

.100

.07S lJl OO C3 Q.

.050 0-I (3

.025 13 39 5

~ ~ NEEK

Figure 9 GROSS BETA IN AIR PARTICULATES V(EEKLY ACTIVITY-1 987 STATION $ 7A

.100

.075 v'lO U

CL

.050 0-I 1

C3

.025 26 52 WEEK

Figure IO GROSS BETA IN AIR PARTICULATES V/EEKLY ACTIVITY-) 987 STATION 21A

.100

.075 Ch O

Q.

.050 0-l C3

+ +

.025 + + ~ +~ +

+ ++

Figure 11 GROSS BETA IN AIR PARTICULATES MEEKLY ACTIVITY-1987 STATION 29A

.100

.075 Ch L

C3 CL

.OS0 0-I-

I D

.025 52

Figure 12 GROSS BETA IN AIR PARTICULATES

'IIII'EEKLY ACTIVITY-1987 STATION 55A

.100

.075 C3 CL

.050 0-I l

D

.025

Figure )5 GROSS BETA IN AIR PARTICULATES V/EEI(LY ACTIVITY-1987 STATION 40A

.100

.075 Q.

.050 0-I-

U

.025

Figure I4 GROSS BETA IN AIR PARTICULATES V/EEKLY ACTIVITY-1987 STATION 44A

.100

.075 Ch (3

Q.

.050 I

I D

.025

[*' i' Ve" ~

'i) V ~ ~ Wt I ~s. t f

Figure 15 GROSS BETA IN AIR PARTICULATES MEAN MEEKLY ACTIVITY 1982-198?

PreoperatIonal Operational Chernobyl 85 YEAR

8.2 Airborne Radioiodine I Samples for airborne radioiodine monitoring are collected concurrently with the air particulate samples. These samples are collected in charcoal cartridges and analyzed for Iodine-131. Station 6A is the control site.

As can be seen in Table XVI one radioiodine sample collected during the first quarter of 1987 indicated detectable Iodine-131 activity (at Sample Station 40A).

Theisecond quarter of 1987 (Table XVII) two samples indicated detectable Iodine-131 activity (Stations 6A and 35A).

Third quarter radioiodine data may be found in Table XVIII. One sample at Station 4A indicated Iodine-131 activity above the detection limit of 0.007 pCi/m~.

As can be seen in Table XIX six samples collected during the fourth quarter of 1987 indicated detectable Iodine-131 activity.

These samples were analyzed by chemical separation of iodine, followed by gross beta counting. Verification of the indicated iodine-131 activity was subsequently performed by additional gross beta counting for half-life analysis, rather than by gamma spectrometry.

INTENTIOMLLYLEFT BLANK SXEXIQ~<

43 N45, Vulture Mine Rd. School, Wickenburg 44 ENE 35, APS El Mirage Office, Sun City 45 ENE 20, REMP Lab, Buckeye, Arizona Litchfield Park School 47 Littleton School, Cashion 48 Perryville 49 Hopeville 50 Olinski Rd., 5 mile, WNW Sector ESE 2, ESE Site Boundary 19 SE 2, SE Site Boundary 20 SSE 2, SSE Site Boundary 21 S 3, S Site Boundary 22 SSW 3, SSW Site Boundary W 5, J.M.M. Parkway 6 Ward, 24 SW 5, Ward Rd. near. Desert Farms 25 WSW 5, Ward Rd. at Cattleguard 26 SSW 4.5, Shephard Farm 27 SW 2, SW Site Boundary 28 WSW 1, WSW Site Boundary 29 W 1, W Site Boundary 30 WNW 1, WNW Site Boundary NW 2, NW Site Boundary 'I 32 NNW 1, NNW Site Boundary 33 NW 5, Yuma Rd., 1/2 mile W of Belmont Rd.

34 NNW 5, Corner of Belmont Rd. and Van Buren Rd.

35 NNW 9, Tonopah, Palo Verde Inn Fire Station N 5, Corner of Wintersburg Rd. and Van Buren Rd.

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

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

39 ENE 5, 343rd Ave., 1/2 mile S of L. Buckeye 40 N 3, Trailer Park at Wintersburg 41 WNW 20, Harquahala Valley School 42 N 8, Ruth Fisher School 8.3 Thermoluminescent dosimeters were placed in fifty locations ranging from one to forty-five miles from the Palo Verde Nuclear Generating Station.

Beginning in 1984, 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.

The results of the quarterly TLD exposures for 1987 were corrected for.

transit exposure and republished in the 1988 Annual Report.

Accordingly, Tables XX through XXIIl and Figures 16 through 20 are deleted. TLD's were placed at the following locations:

LQQBXIQH E 30, APS Western Division Offices ENE 24 Scott-Libby School E 25, Liberty School E20, 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) 10 SE 5, Corner of 355th Ave. and Elliot Rd.

ESE 5, Corner of 339th Ave. and Dobbins Rd.

12 E5, Corner of 339th Ave., and Buckeye-Salome Rd.

N 1, N Site Boundary 14 NNE 2, NNE Site Boundary 15 NE 2, NE Site Boundary 16 ENE 2, ENE Site Boundary 17 E 2, E Site Boundary TABLE XIX Cont.

AIRBORNE RADIOIODINE DATA a 1987 pCi~m~

Collection Period Station 21A Station 29A Station 35A Station 40A Station 44A 09/29/87 - 10/06/87 <LLD <LLD <LLD <LLD 10/06/87 - 10/13/87 <LLD <LLD 10/13/87-- 10/20/87 <LLD <LLD <LLD <LLD <LLD 10/20/87 - 10/27/87 <LLD <LLD <LLD 10/27/87 - 11/03/87 <LLD <LLD <LLD <LLD 11/03/87 - 11/10/87 <LLD <LLD (d) (d) 11/10/87 - 11/17/87 <LLD <LLD (d) 11/17/87 - 11/24/87 <LLD 0.009+0.004(t) 0.01320.004(t) (d) 11/24/87 - 12/01/87 <LLD <LLD (d) 12/01/87 - 12/08/87 <LLD <LLD <LLD (d) 12/08/87 - 12/15/87 <LLD <LLD (d) 12/15/87 - 12/22/87 <LLD <LLD <LLD <LLD (d) 12/22/87 - 12/29/87 <LLD <LLD <LLD <LLD (d)

~Invalid Sample (a)CEP data (d)Sample not collected (t)Verified by tb analysis

~XIX AIRBORNE RADIOIODINE DATA a 1987 pCi/m3 (Control)

Collection Period Station 1A Station 4A Station 6A

• 09/29/87 - 10/06/87 10/06/87 - 10/13/87 <LLD <LLD <LLD 10/13/87 - 10/20/87 <LLD <LLD <LLD <LLD <LLD <LLD <LLD 10/20/87 - 10/27/87 <LLD <LLD <LLD <LLD <LLD <LLD 10/27/87 - 11/03/87 <LLD <LLD <LLD <LLD <LLD 11/03/87 - ll/10/87 <LLD <LLD <LLD <LLD <LLD 11/10/87 - 11/17/87 (d) <LLD <LLD 11/17/87 - 11/24/87 (d) <LLD 0.024f0.006(t) <LLD 0.01420.004(t) 11/24/87 - 12/01/87 (d) <LLD <LLD <LLD <LLD <LLD <LLD 12/01/87 - 12/08/87 (d) <LLD <LLD <LLD <LLD <LLD 12/08/87 - 12/15/87 (d) <LLD <LLD <LLD <LLD <LLD 12/15/87 - 12/22/87 (d) <LLD <LLD <LLD 12/22/87 - 12/29/87 <LLD 0.00820.005(t) <LLD 0.02420.006(t) <LLD

=~Invalid Sample (a)CEP data (d)Sample not collected (t)Verified by t4 analysis

TABLE XVIII Cont.

AIRBORNE RADIOIODINE DATA a 1987 g)Ci~m~

Collection Period Station 21A Station 29A Station 35A Station 40A Station 44A 07/01/87 - 07/07/87 <LLD <LLD <LLD 07/07/87 - 07/14/87 <LLD <LLD <LLD 07/14/87 - 07/21/87 <LLD <LLD 07/21/87 - 07/28/87 <LLD <LLD <LLD 07/28/87 - 08/04/87 <LLD <LLD <LLD <LLD 08/04/87 - 08/11/87 <LLD <LLD 08/11/87 - 08/18/87 <LLD <LLD <LLD 08/18/87 - 08/25/87 <LLD <LLD 08/25/87 - 09/01/87 <LLD <LLD <LLD 09/01/87 - 09/08/87 <LLD <LLD <LLD <LLD 09/08/87 - 09/15/87 <LLD <LLD <LLD 09/15/87 - 09/22/87 <LLD <LLD <LLD 09/22/87 - 09/29/87 <LLD <LLD <LLD <LLD <LLD

~Invalid Sample (a)CEP data

T III AIRBORNE RADIOIODINE DATA a 1987 (Control)

Collection Period Station lA Station 4A 07/01/87 - 07/07/87 <LLD <LLD <LLD <LLD 07/07/87 - 07/14/87 <LLD <LLD 07/14/87 - 07/21/87 0.013i0.003 <LLD <LLD <LLD 07/21/87 - 07/28/87 <LLD <LLD <LLD <LLD 07/28/87 - 08/04/87 <LLD <LLD <LLD <LLD <LLD 08/04/87 - 08/11/87 <LLD <LLD <LLD <LLD <LLD <LLD 08/11/87 - 08/18/87 <LLD <LLD <LLD <LLD <LLD 08/18/87 - 08/25/87 <LLD 08/25/87 - 09/01/87 <LLD 09/01/87 - 09/08/87 <LLD <LLD 09/08/87 - 09/15/87 <LLD 09/15/87 - 09/22/87 <LLD <LLD <LLD <LLD 09/22/87 - 09/29/87 <LLD <LLD <LLD <LLD <LLD

~Invalid Sample (a)CEP data

TABLE XVII Cont.

AIRBORNE RADIOIODINE DATA a 1987 pCi~m~

Collection Period Station 21A Station 29A Station 35A Station 40A Station 44A 04/01/87 - 04/08/87 <LLD <LLD <LLD <LLD 04/08/87 - 04/15/87 <LLD <LLD 0.01220.005 <LLD 04/15/87 - 04/22/87 <LLD <LLD 04/22/87 - 04/29/87 <LLD <LLD <LLD 04/29/87 - 05/06/87 <LLD <LLD <LLD 05/06/87 - 05/13/87 <LLD <LLD <LLD <LLD 05/13/87 - 05/20/87 05/20/87 - 05/27/87 05/27/87 - 06/03/87 <LLD 06/03/87 - 06/10/87 <LLD <LLD 06/10/87 - 06/17/87 <LLD <LLD 06/17/87 - 06/24/87 <LLD <LLD <LLD <LLD <LLD 06/24/87 - 07/01/87 <LLD <LLD <LLD <LLD

~Invalid Sample (a)CEP data

~TII AIRBORNE RADIOIODINE DATA a 1987 pCiJm~

(Control)

Collection Period Station 1A Station 4A Station 6A 04/01/87 - 04/08/87 <LLD 0.00820.005 <LLD <LLD <LLD <LLD 04/08/87 - 04/15/87 <LLD <LLD 04/15/87 - 04/22/87 <LLD <LLD <LLD <LLD <LLD 014/22/87 - 04/29/87 <LLD <LLD <LLD <LLD <LLD <LLD 04/29/87 - 05/06/87 <LLD <LLD <LLD <LLD <LLD <LLD <LLD 05/06/87 - 05/13/87 <LLD <LLD <LLD <LLD 05/13/87 - 05/20/87 <LLD <LLD 05/20/87 - 05/27/87 <LLD <LLD 05/27/87 - 06/03/87 <LLD 06/03/87 - 06/10/87 <LLD <LLD <LLD <LLD 06/10/87 - 06/17/87 <LLD <LLD <LLD <LLD <LLD <LLD 06/17/87 - 06/24/87 <LLD <LLD <LLD <LLD <LLD <LLD <LLD 06/24/87 - 07/01/87 <LLD <LLD <LLD <LLD

~Invalid Sample (a)CEP data

TABLE XVI Cont AIRBORNE RADIOIODINE DATA a 1987 Collection Period Station 21A Station 29A Station 35A Station 40A Station 44A 12/30/86 - 01/07/87 <LLD <LLD 01/07/87 - 01/14/87 <LLD <LLD <LLD.

01/14/87 - 01/21/87 <LLD <LLD <LLD 01/21/87 - 01/28/87 <LLD <LLD 01/28/87 - 02/04/87 <LLD 02/04/87 - 02/11/87 <LLD <LLD 02/11/87 - 02/18/87 <LLD <LLD-02/18/87 - 02/25/87 <LLD <LLD <LLD 02/25/87 - 03/04/87 <LLD 03/04/87 - 03/11/87 <LLD <LLD 0.01610.004 03/11/87 - 03/18/87 03/18/87 - 03/25/87 <LLD <LLD <LLD 03/25/87 - 04/01/87 <LLD (a)CEP data

AIRBORNE RADIOIODINE DATA a 1987

~Cpm~

(Control)

Collection Period Station 1A Station 4A Station 6A 12/30/86 - 01/07/87 <LLD <LLD <LLD <LLD <LLD <LLD 01/07/87 - 01/14/87 <LLD <LLD <LLD <LLD 01/14/87 - 01/21/87 <LLD <LLD <LLD <LLD 01/21/87 - 01/28/87 <LLD <LLD 01/28/87 - 02/04/87 <LLD <LLD <LLD 02/04/87 - 02/11/87 <LLD <LLD <LLD 02/11/87 - 02/18/87 <LLD <LLD <LLD <LLD <LLD 02/18/87 - 02/25/87 <LLD <LLD <LLD <LLD <LLD <LLD 02/25/87 - 03/04/87 <LLD <LLD <LLD 03/04/87 - 03/11/87 <LLD <LLD <LLD <LLD 03/ll/87 - 03/18/87 <LLD 03/18/87 - 03/25/87 <LLD 03/25/87 - 04/01/87 <LLD <LLD <LLD

~Invalid Sample (a)CEP data

8.4 Human vegetation samples were collected from four local farms since no commercial companies were 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.

The four sample locations were ¹47, 51, 52 and 61. Location 61 is the control. Samples were collected monthly during the growing season, as available.

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 Spectral analyses 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-89, Strontium-90 and Gamma emitting nuclides. The six sample locations were ¹50, 51, 53, 54, 55 and 56.

Table XXVII indicates no Strontium-89/90 was detected in 1987. One hay sample collected on 02/13/87 from the Skousen Dairy (sample location

¹54) indicated Cesium-137 activity of 199 +38 pCi/kg. No other Gamma emitting nuclides were detected (Table XXVIII).

ThlUMIUZ Date Iodine-131 Leafy:

(Site ¹52)

Lettuce 01/15/87 <LLD Mustard Greens 01/15/87 <LLD Citrus:

~~Grapefruit (Site ¹47) 01/15/87 <LLD Lemons 01/15/87 <LLD Oranges 01/15/87 <LLD Lemons 02/12/87 <LLD Oranges 02/12/87 <LLD Grapefruit 02/12/87 <LLD Grapefruit 03/12/87 <LLD Lemons 03/12/87 <LLD Tangerines 03/12/87 <LLD Grapefruit 04/16/87 <LLD Oranges 04/16/87 <LLD Oranges 01/15/87 <LLD Tangerines 01/15/87 <LLD Grapefruit 01/15/87 <LLD Grapefruit 02/12/87 <LLD Grapefruit 03/12/87 <LLD Oranges 03/12/87 <LLD Grapefruit 04/16/87 <LLD (a) CEP data Date Iodine-131 Citrus (Cont ~ ):

(Site 051)

Grapefruit 01/15/87 <LLD Grape fruit 02/13/87 <LLD Grapefruit 03/12/87 <LLD Grapefruit 04/16/87 <LLD Grapefruit 01/15/87 <LLD Tangerines 01/15/87 <LLD Oranges 01/15/87 <LLD Grapefruit 02/12/87 <LLD Tangerines 02/12/87 <LLD Oranges 02/12/87 <LLD Grapefruit 03/12/87 <LLD Tangerines 03/12/87 <LLD Oranges 03/12/87 <LLD Grapefruit 04/16/87 <LLD Tangerines 04/16/87 <LLD Oranges 04/16/87 <LLD (a) CEP data TABLE XXV VE6ETATION Leaf a GAHWL SPECTROHETRT 1987 i k wet Date Collection Location Collected Ba-140 Co-60 Co-58 Nn-54 Zn-65 Zr Hb-95 Cs-137 Cs-134 Fe-59 Cambron 6arden (Site 852)

Lettuce 01/15/87 <LLO <LLD <LLO <LLO <LLD <LLO <LLO <LLD <LLD Hustard Greens 01/15/87 <LLD <LLO <LLD <LLD <LLD <LLO <LLO <LLD <LLO (a)CEP data

TABLE XXVI HWAN VEGETATION Citrus a GAMMA SPECTROMETRY 1987 Date Collection Location Collected Ba-140 Co-60 Co-58 Mn-54 Zn-65 Zr Hb-95 Cs-137 Cs-134 Fe-59 Adams (Site f47)

Grapefruit 01/15/87 <LLD <LLD <LLD <LLO <LLD (LLO <LLO <LLO (LLD Lemons 01/15/87 <LLO <LLO <LLO <LLO <LLD <LLD <LLO <LLD <LLD Oranges 01/15/87 (LLD <LLD <LLO <LLO <LLD <LLD <LLO (LLO (LLD Lemons 02/12/87 <LLD <LLD <LLD <LLD <LLD <LLO <LLD <LLD <LLO Qranges 02/12/87 <LLO <LLO <LLO <LLO <LLD <LLO <LLD <LLD (LLD Grapefruit 02/12/87 <LLO <LLD <LLO <LLO <LLD (LLD <LLD <LLO <LLO Grapefruit 03/12/87 <LLO <LLO <LLO <LLD <LLD <LLD <LLO <LLO <LLO Lemons 03/12/87 <LLD <LLD <LLO <LLO <LLD <LLO <LLD <LLO <LLO Tangerines 03/12/87 <LLO <LLO <LLD <LLD <LLD <LLO <LLO <<LLO LLO Grapefruit 04/16/87 <LLO <LLO <LLO <LLO <LLO <LLO <LLO <LLO (LLO Oranges 04/16/87 <LLO <LLD <LLO <LLO (LLO (LLD <LLD <LLD <LLO

~Cool e (Site 061) (Control)

Oranges 01/15/87 <LLO <LLO <LLD <LLD (LLO <LLO <LLO <LLO <LLD Tangerines 01/15/87 <LLO <LLO <LLO <<LLO <LLD <<LLD <LLO <LLO <LLO Grapefruit 01/15/87 <LLO <LLO <LLO <LLD (LLO (LLO <LLD <LLO (LLD Grapefruit 02/12/87 (LLD <LLD <LLO <LLD <LLD <LLD <LLD <LLO <LLO Grapefruit 03/12/87 <LLD <LLD <LLO <LLD (LLO <LLO <LLD <LLO <<LLD Oranges 03/12/87 <LLD <LLD <LLO <LLD <LLO <LLD <LLO <LLO <LLO Grapefruit 04/16/87 <LLD <LLO <LLD <LLD <LLO (LLD <LLD <LLO <<LLO (a)CEP data

HWAN VEGETATION Citrus a GANVL SPECTRONETRY 1987 i k wet Date Co11ection Location Collected 04-440 Co-60 Co-56 Ilo-54 Zo-65 Zr 60-95 Ce-131 Ce-134 Fe-59 But1er (Site f51)

Grapefruit 01/15/87 cLLD cLLD cLLD <LLD <LLD cLLD cLLD <LLD <LLD Grapefruit 02/13/87 <LLO <LLO <LLO <LLD <LLO <LLO <LLO <LLO <LLO Grapefruit 03/12/87 <LLO <LLD <LLD <LLO <LLD <LLO <LLO <LLD (LLD Grapefruit 04/16/87 <LLD <LLO <LLD (LLO <LLO (LLD <LLO <LLD <LLD Cambron Garden (Site 852)

Oranges 01/15/87 <LLO <LLO <LLO <LLO <LLD <LLD <LLO <LLO <LLO Tangerines 01/15/87 <LLD <LLO <LLO <LLO <LLO <LLO <LLO <LLO <LLO Grapefruit 01/15/87 <LLD <LLO <LLD <LLD <LLD <LLD <LLD <LLD <LLO Grapefruit 02/12/87 <LLD <LLD <LLD (LLD <LLD <LLD <LLO (LLO <LLD Tangerines 02/12/87 <LLD <LLO <LLD <LLD <LLO <LLO <LLO <LLO <LLD Oranges 02/12/87 <LLO <LLO <LLO <LLQ <LLO <LLO <LLO <LLO <LLO Grapefruit 03/12/87 <LLO <LLD <LLO <LLO <LLO <LLD <LLD <LLD <LLO Tangerines 03/12/87 <LLD <LLD <LI.D <LLD <LLO <LLD <LLD <LLD <LLD Oranges 03/12/87 <LLD <LLO <LLD <LLO <LLD <LLD <LLD <LLD (LLD Grapefruit 04/16/87 <LLD <LLD <LLD <LLD <LLO <<LLD <LLO (LLD <LLO Tangerines 04/16/87 <LLD <LLD <LLD <LLO <LLO <<LLO <LLD <LLO <LLD Dranges 04/16/87 <LLD <LLD <LLD (LLD <LLO <LLD <LLO <LLD <LLD (a)CEP data

TABLE XXVII ANIMAL VEGETATION a 1987 Collection Date Location Collected Strontium-89 Strontium-90 Kerr'Site Grain 01/16/87

¹53) Hay 01/16/87 Grain 02/13/87 Hay 02/13/87 Grain 03/13/87 <LLD Hay 03/13/87 <LLD Grain 04/17/87 <LLD <LLD Hay 04/17/87 <LLD <LLD Grain 05/15/87 <LLD <LLD Hay 05/15/87 <LLD <LLD Butler Grain 01/16/87 <LLD (Site ¹51) Haylage 01/16/87 <LLD Hay 01/16/87 <LLD Grain 02/13/87 <LLD Haylage 02/13/87 <LLD Hay 02/13/87 <LLD Grain 03/13/87 <LLD Haylage 03/13/87 <LLD Hay 03/13/87 <LLD Grain 04/17/87 <LLD <LLD Haylage 04/17/87 <LLD <LLD Hay 04/17/87 <LLD <LLD Grain 05/15/87 <LLD <LLD Haylage 05/15/87 <LLD <LLD Hay '05/15/87 <LLD <LLD (a) CEP data TABLE XXVII Cont ANINAL VEGETATION a

~98 Collection Date Location Collected Strontium-89 Strontium-90 Lueck Grain 01/16/87 (Site ¹55) Hay 01/16/87 Haylage 01/16/87 Grain 02/13/87 <LLD <LLD Haylage 02/13/87 <LLD <LLD Beet Pulp 02/13/87 <LLD <LLD Hominy Corn 02/13/87 <LLD <LLD Grain 03/13/87 <LLD Hay 03/13/87 <LLD

'Haylage 03/13/87 <LLD Grain 04/17/87 <LLD <LLD Hay 04/17/87 <LLD <LLD Haylage 04/17/87 <LLD <LLD Grain 05/15/87 <LLD Hay 05/15/87 <LLD Haylage 05/15/87 <LLD Hamstra ¹2 Grain 01/16/87 <LLD (Site ¹56) Hay 01/16/87 <LLD Grain 02/13/87 Hay 02/13/87 Grain 03/13/87 Hay 03/13/87 Grain 04/17/87 Hay 04/17/87 Grain 05/15/87 <LLD Hay 05/15/87 <LLD (a) CEP data TABLE XXVII Cont ANIMAL VEGETATION a 1987 Collection Date Location Collected Strontium-89 Strontium-90 Baisley Grain 01/16/87 (Site ¹50) Hay 01/16/87 Grain 02/13/87 <LLD Hay 02/13/87 <LLD Grain 03/13/87 Hay 03/13/87 Grain 04/17/87 <LLD Hay 04/17/87 <LLD Grain 05/15/87 Hay 05/15/87 ousen Grain 01/16/87 <LLD <LLD ite ¹54) Hay 01/16/87 <LLD <LLD Silage 01/16/87 <LLD <LLD Grain 02/13/87 Hay 02/13/87 Silage 02/13/87 Grain 03/13/87 <LLD Hay 03/13/87 <LLD Silage 03/13/87 <LLD Grain 04/17/87 Hay 04/17/87 Silage 04/17/87 Grain 05/15/87 Hay 05/15/87 Silage 05/15/87 (a) CEP data TABLE XXVIII ANIMAL VEGETATION a GAMMA SPECTROMETRY 1987 i k Collect ion Date Location age Col lected Ba-140 Co-60 Co-58 Mn-54 Zn-65 Zr Nb-95 Cs-137 Cs-134 Fe-Sg

'Kerr (Site $ 53) Grain 01/16/87 <LLD <LLD <LLD <LLD <LLD <LLD <LLD (LLD <LLD Hay 01/16/87 <LLD <LLO <LLD <LLD <LLD <LLD <LLO <LLO <LLO Grain 02/13/87 <LLO <LLD <LLO <LLO <LLD <LLO <LLO (LLO <LLO Hay 02/13/87 <LLD <LLO <LLO <LLO <LLD <LLO <LLD <LLO <LLO Grain 03/13/87 <LLD <LLD <<LLD <LLD <LLO <LLD (LLD <LLO <LLO Hay 03/13/87 <LLD <LLD cLLD <LLD <LLD (LLD <LLD <LLD <LLD Grain 04/17/87 <LLO <LLO <LLO <LLO <LLD <LLD <LLO <LLD <<LLO Hay 04/17/87 <LLD <LLD <LLO <LLD <LLO <LLD <LLD <LLO <LLO Grain 05/15/87 <LLO <LLO <LLO <LLO <LLO <LLO <LLD <LLD <LLO Hay 05/15/87 <LLD <LLO <LLO <LLO <LLO <LLO (LLD <LLO <LLD Butler (Site 851) Grain 01/16/87 <LLD <LLD <LLD <LLO <LLD <LLD <LLO <LLD <LLD Haylage 01/16/87 <LLD <LLO <LLD <LLD <LLO <LLD <LLD <LLO <LLD Hay 01/16/87 <LLO <LLO <LLO <LLD <LLD <LLD <LLD <LLO (LLD Gr a in 02/13/87 <LLO <LLO <LLO <LLO <LLO <LLD <LLD cLLD cLLD Haylage 02/13/87 <LLD <LLD <LLO <LLO <LLD <LLO (LLD <LLO <LLO Hay 02/13/87 <LLO <LLD <LLO <LLO <LLD <LLD <LLO <LLO <LLO Grain 03/13/87 <<LLD <LLO <<LLO <LLO <LLD <LLO <LLD <LLD <LLO Haylage 03/13/87 <<LLD <LLO <LLO <LLO <LLD <LLD <LLO <LLO <LLO Hay 03/13/87 <LLO <LLO LLO <LLO <LLD <LLO <LLO <LLD cL'LO Grain 04/17/87 <LLO <LLD <LLD <LLO <LLD <LLO <LLD <LLO <LLD Haylage 04/17/87 <LLO <LLO <LLO <<LLD <LLO <LLD (LLD <LLO <LLD Hay 04/17/87 <LLD <LLD <LLO <LLD <LLD <LLO <LLO <LLD <LLD Grain 05/15/87 <LLO <LLD <LLD <LLO <LLO <LLD (LLD <LLO <LLO Haylage OSI15I87 <LLD <LLO cLLO <LLO <LLO <LLO <LLO <LLO <LLO Hay 05/15/87 <LLO <LLO <LLO <LLD <LLD <LLO <LLD (LLO <LLD (a)CEP data

TABLE XXVIII Cont.

ANIMAL VE6ETATION GAMMA SPECTROMETRY 1987 Collection Date Location ~Tie C441eeted Ba-140 Co-60 Co-58 Mn-54 Zn-65 Ze 33-33 Ce-131 Ce-134 Fe-59 Lueck (Site 855) Grain 01/16/87 'LLO <LLD <LLO <LLO <LLD <LLO <LLO <LLD <LLO Hay 01/16/87 <LLD <LLD <LLO <LLO <LLD <LLD <LLO (LLD <LLD Haylage 01/16/87 <LLD <LLO <LLO <LLD <LLO <LLD <LLD <LLO <LLO Grain 02/13/87 <LLO <<LLD (LLO <LLO <LLO <LLD (LLO <LLD <LLO Haylage 02/13/87 (LLO <LLO (LLD (LLO <LLO <LLO (LLD <LLD <LLO Beet Pulp 02/13/87 <LLD <LLO (LLO <LLD <LLD <LLO <LLD <LLD <LLD Hominy Corn 02/13/87 <LLO <LLO <LLO <LLD <LLD <LLO <LLO <LLO <LLD Grain 03/13/87 <LLD <LLO <LLO (LLD <LLO <LLD <LLD <LLD <LLO Kay 03/13/87 <<LLO <LLD <LLD <LLO <LLO <LLD (LLD <LLO <LLD Haylage 03/13/87 <LLD <LLD <LLO <LLD (LLO <LLO <LLD <LLD <LLD Grain 04/17/87 <LLD <LLD <LLO <LLO <LLO <LLD <LLD <LLO <LLO Hay 04/17/87 <LLD <LLD <LLO <LLO <LLO <LLD <LLD <LLO <LLO Haylage 04/17/87 <LLD <LLO <LLO <LLO <LLO <LLD <LLO <LLO <LLO Gr a in 05/15/87 <LLD <LLD <LLO <LLD <LLD <LLO <LLD <LLO <LLD Hay 05/15/87 <LLD <LLD <LLO <LLD <LLD <LLD <LLO <LLD <LLD Haylage 05/15/87 <LLD <LLD <LLO <LLD <LLD <LLO <LLO <LLO <LLD Hamstra f2 Grain 01/16/87 <LLO <LLO <LLD <<LLD <LLD <LLO <LLD <LLD <LLD Site f56 Kay 01/16/87 <LLO <LLO <LLD <LLD <LLO <LLO <LLO <LLO <LLD Grain 02/13/87 <LLO <LLO <LLD <LLO <LLO <LLD (LLD (LLD <LLO Hay 02/13/87 <<LLD <LLD <LLO <LLO <LLD <LLO <LLO (LLD <LLD Grain 03/13/87 (LLO <LLD <LLO <LLO <LLO (LLD <LLD <LLD <LLD Kay 03/13/87 <LLD <LLO <LLO <LLO (LLO <LLO <LLD <LLD <LLD Grain 04/17/87 <LLO <LLO <LLD <LLD <LLD (LLO <LLO <LLO <LLO Hay 04/17/87 <LLO <LLO <LLO <<LLO <LLD <LLO <LLO <LLD <LLD Grain 05/15/87 <LLD <LLO <LLD <LLO <LLD <LLD <LLD (LLO <LLD Hay 05/15/87 <LLD <LLD (LLO <LLO <LLO <LLD <LLO <LLO <LLO (a)CEP data

TABLE XXVIII Cont.

ANIMAL VEGETATION GAMMA SPECTROMETRY 1987 i k Col lection Date Location Ce1 1 ected Ba-140 Co-60 Co-58 Hn-54 Zn-65 Ze 53-95 Cs-137 Cs-134 Ce-59 Ba isle Grain 01/16/87 <LLD <LLD (LLD (LLD <LLO <LLD <LLO <LLO <LLD Site f50) Hay 01/16/87 <LLD <<LLO <LLO (LLO <LLO <LLD <LLO <LLD <LLD Grain 02/13/87 <LLD <LLO (LLD <LLD <LLO <<LLO <LLO <LLO <LLO Hay 02/13/87 <LLO <LLO <LLD (LLD <LLO <LLO <LLO <LLO <LLO Grain 03/13/87 <LLO <LLO <LLD <LLD <LLD <LLD <LLO <LLO <LLD Hay 03/13/87 <LLD <LLO <LLO (LLD <LLO <LLD <LLO <LLO <LLO Grain 04/17/87 <<LLO <LLD (LLO <LLO <LLD <LLD <LLD <LLD <LLD Hay 04/17/87 <LLO <LLO <LLD <LLD <LLD (LLO <LLO <LLD <LLD Grain 05/15/87 <LLO <LLD <LLO <LLD <LLD <LLO <LLD <LLD <LLO Hay 05/15/87 <LLD <LLD <LLD <LLD <LLO <LLO <LLD <LLD <LLO Skousen Grain 01/16/87 <LLO <LLD <LLD <LLO <LLO <LLD <LLO <LLD <LLO Teste 454) Hay 01/16/87 <LLO <LLD <LLD (LLD <LLD <LLD <LLD <LLO (LLD Silage 01/16/87 <LLD <LLD <LLD <LLD <LLD <LLO <LLD <LLO <LLO Grain 02/13/87 <LLD <LLD <LLO <LLO <LLO <LLO <LLO <LLO <LLO Silage 02/13/87 <LLO <LLO <LLO <LLD <LLO <LLD <LLO <LLO <LLO Hay 02/13/87 <LLD <LLO <LLD <LLD <LLO <LLD 199s38(t) <LLO <LLD Grain 03/13/87 <LLD <LLD <LLO <LLD <LLD <LLO <LLO <LLD <LLD May 03/13/87 <LLO <LLD <LLO <LLO <LLO <LLO <LLD <LLO <LLD Silage 03/13/87 <LLO <LLO (LLD <LLD <LLO <LLD <LLD <LLO <LLD Grain 04/17/87 <LLO <LLO <LLD <LLO <LLD <LLD <LLD <LLO <LLO Hay 04/17/87 <LLO <LLO <LLO <LLD <LLO <LLO <LLD <LLO (LLD Silage 04/17/87 <LLD <LLD <LLD <LLO <LLO <LLO <LLO (LLD <LLO Grain 05/15/87 <LLO (LLO <LLO <LLD <LLO <LLD <LLO <LLD <LLD Hay 05/15/87 <LLO <LLO <LLO <LLD <LLD <LLD <LLO <LLO (LLD Silage 05/15/87 <LLO <LLD <LLD <LLO <LLD <LLO <LLO <LLD <LLD (a)CEP data (t) Ver ifi ed by reanalysis

8.5 Drinkin Water Drinking water samples were taken monthly. 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. The sample locations were ¹46, 48 and 49.

Twenty-one (21) 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/1 to 7.6 pCi/1 (Glover Residence, Site ¹49, collected 07/14/87).

Gross Beta activity ranged from less than 2.0 pCi/1 to a high of 10.0 20.8 pCi/1 (McArthur Residence, Site ¹46, collected 03/12/87).

Strontium-90 was not detected above 0.8 pCi/1 in any of the drinking water samples collected during 1987.

Tritium results, for all drinking water samples collected during 1987, were less than 1340 pCi/l. In addition, no Gamma-emitting nuclides of man-made origin were detected in any of the samples.

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TABLE XXIX DRINKING WATER

~98 Ci 1 Date McArthui Residence <LLD <LLD (Site e46) 01/15/87'2/12/87e 03/12/87e 10.0 20.8 <LLD

<LLD 04/16/87'5/14/87'6/18/87e

<LLD 2.8 20.4 07/14/87b <6.9 6.6 il.3 <0.68 <1040 08/11/87" 3.7 25.0 4 9e <LLD 09/15/87b 5.7 l:4.8 7.7 21.3 <0.73 <LLD 10/13/87 <5.2 5.6 +1.4 <LLD <LLD 11/10/87 6.6 23.1 <LLD <1320

<5.2'.7 12/15/87b <2.4 fl.l <0.75 CEP data "ASU data

~Not sampled

'High TDS (Self-Absorption)

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TABLE XXIX Cont:

DRINKING WATER

~198 Ci 1 Date Collection Location Collected Glover Residence Ol/15/87e 1.4 X1.0 <LLD <LLD <LLD (Site ¹49)

<LLD 02/12/87'3/12/87e 2.0 20.5

<LLD <LLD 04/16/87'5/14/87 1.5 i1.1 1.1 il.O 2.0. l:0.4 06/18/87'7/14/87b 7.6 i4.6 2.7 i0.9 <0.81 <1030 08/11/87b 3.3 k4.4 4 7e <LLD 09/15/87b 4.4 R3.7 6.2 21.3 <0.75 <LLD 10/13/87 <1. 8 5.8 i1.6 <LLD 11/10/87b 1.7 k2,6 <1340

<4.6'.3 12/15/87b <1.4 21.0 <0.67 CEP data

~ASU data

~Not sampled

'High TDS (Self-Absorption)

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TABLE XXIX Cont DRINKING WATER

~98 Ci 1 Date Collection Location Collected Gavette Residence 01/15/87 (Site ¹48) 02/12/87~ 2.4 i0.5 <LLD <LLD 03/12/87~ 3.0 i0.5 <LLD 04/16/87~ <LLD <LLD <LLD 05/14/87'6/18/87 2.4 20.5 07/14/87" <4.4 4.0 i1.3 <0 '1 <1030 08/11/87b <1.3 <LLD <LLD

<4.8'.8 09/15/87b 4.0 i5.2 21.4 <0.75 (LLD 10/].3/87b <5.5 6.8 21.5 <LLD <LLD 11/10/87b <2.3 <LLD <1310

<5.0'.3 12/15/87" <2 5

~ il.3 <0.80

'CEP data "ASU data

~Not sampled

'Hi@ TDS (Self-Absorption)

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TABLE XXX DRINKING VATER GANA SPE CTROHETRY 19&7 Collection Date Location Col1ected Ba-140 Co-50 Co-59 Kn-54 Zn-55 Zs lib-95 Cs-131 Cs-154 Fa-59 1-151 La-140 HcArthur Residence 01/15/87 LLD LLO LLD LLO LLD LLO LLD LLO LLO LLO (Site f46) 02/12/87>> LLO LLO LLO LLO LLO LLO Li.O LLO LLD LLO 03/12/87 <LLO (LLD <LLD <<LLD <LLD <LLD <LLD <LLD (LLD (LLD 04/16/87 <LLD <LLD <LLO (LLD <LLD <LLD <LLO <LLD (LLD <LLD 05/14/87 <LLO <LLD <LLO <LLD <LLD (LLD <LLD <LLO <LLD <LLD 06/18/87>> <LLO <LLD <LLD <LLD <LLD <LLD <LLD <LLO <LLO <LLD 07/14/87" <LLO LLD <LLD LLD <LLO LLD <LLD <LLO LLD <9.1 LLO 08/11/87" C C C C C c d 09/15/87 <LLO <LLD <LLO <LLO <LLO <LLD LLD LLO LLD LLD <<LLD 10/13/87 <LLD <LLO <LLO <LLO <LLO <LLO <LLO (LLO <LLO <LLO <LLD 11/10/87 <lLD <lLO <LLD <i.LO <LLO <<LLD <LLO <<LLD <LLD <LLD <LLD 12/15/87 <LLD <LLD <LLD <<LLD <LLD <LLD <LLD <LLD <LLD <LLO <LLO CEP data ASU data Hot Determined Ho Sample Co11ected

>>Gam>>a spec decay corrected

TABLE XXX Cont.

ORIHKIHG MATER GAHHA SPECTROHETRY 1987 Collection Date Location Co 11ected Ba-140 Co-60 Co-58 Hn-54 Zn-65 Zr Hb-95 Cs-137 Cs-134 Fe-59 I-131 La-140 Glover Residence 01/15/87 LLD <LLO LLO <LLD <LLO LLD LLO <LLO <LLD LLO (Site f49) 02/12/87 LLO <LLO <LLO <LLO <LLO LLD <LLO <LLO LLO LLD 03/12/87 <LLO <LLO <LLD <LLO <LLO <LLO <LLD <LLO <LLD <LLO 04/16/87 <LLD <LLD <LLD <LLD <LLO <LLO <LLO <LLO <LLO <LLD 05/14/87 <LLO <LLO <LLO <LLO <LLO <LLD <LLD <LLO <LLD <LLD 06/18/87 <LLD <LLO <LLO <LLO <LLD <LLD <LLO <LLO <LLD <LLD 07/14/87 <LLO <LLD <LLO <LLD <LLO <LLO <LLD <LLD <LLD <LLO <LLO 08/11/87 <LLD <LLD <LLD <LLO <LLO 'LLD <LLO <LLO <LLD <LLO <LLD 09/15/87" <LLD <LLD <LLO <LLD <LLD <LLO <LLO <LLO <LLO <LLD <LLO 10/13/87 <LLO <LLO <LLD <LLO <LLO <LLO <LLO <LLO <LLD <LLO <LLO 11/10/87b <LLD <LLO <LLO <LLO <LLO <LLO <LLD <LLD <LLD <LLD <LLD 12/15/87 <LLO <LLO <LLD <LLD <LLO <LLO <LLD <LLO <LLD <LLD <LLO CEP data ASU data cHot Determined

TABLE XXX Cont DRINKING VATER GAHN SPECTROHETRT 1987 Col lection Date Location Collected 64-140 Co-60 Co-56 No-54 Zo-65 Zr 60-95 Cs-131 Cs-134 Fe-59 I-131 te-140 Gavette Residence 01/is/87 LLD <LLO LLD <LLD <LLO <LLO (LLD LLO LLD <LLO (Site f48) 02/12/87 <LLO <LLO <LLO <LLO <LLD <LLO <LLO <LLO <LLO <LLD 03/12/87 LLO LLO LLD LLO LLO LLO LLD LLD LLO LLD 04/16/87 <LLO LLO LLO <LLD <LLD LLO <LLD LLO LLO <LLO 05/14/87 <LLD <LLO <LLD <LLO <LLD <LLD <LLO <LLO <LLO <LLD 6

06/18/87 <LLO <LLO <LLD <LLO <LLO <LLD <LLO <LLD <LLO <LLO I

07/14/87 <LLO <LLD <LLD <LLO <LLO <LLD <LLD LLO <LLD 9.1 LLD 6

08/11/87 <LLO <LLO <LLD <LLD <LLO <LLO <LLO (LLD <LLD <LLO <LLO 08/IS/87 <LLO <LLO <LLO <LLD <LLO <LLO <LLD <LLD <LLO <LLO <LLO 10/13/Bjb (LLD (LLD <LLD <LLO <LLO <LLO <LLD <LLD <LLO <LLO <LLD 11/10/87 (LLO <LLO <LLD <LLO <LLD <LLD <LLO <LLD <LLD <LLD <LLD 12/15/87 <LLO <LLO <LLO <LLD <LLO <LLO (LLO <LLD <LLD <LLD (LLD CEP data bASU data Hot Determined Gamna spec decay corrected

8.6 Groundwater Quarterly groundwater samples were collected from the on-site wells (Well Ill 27ddc and Well 34abb, Sample Sites ¹57 and 58, respectively).

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 are presented in Tables XXXI and XXXII.

Both groundwater samples collected on 11/10/87 analyzed positive for Gross Alpha activity.

Gross Beta activity was detected in two of the groundwater samples collected during 1987: Well 27ddc, 4.6 i5.7 pCi/1 (08/11/87) and Well 34abb, 3.0 k7.7 pCi/1 (08/ll/87); these are sample sites ¹57 and 58, respectively.

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

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T LE XXX GROUNDWATER 198 Ci 1 Date Collection Location Collected 27ddc (Site ¹57) 02/12/87~ <LLD <LLD <LLD <LLD 05/14/87'8/11/87b 4.6 i5.7 11/10/87" 4.2 i3.1 5 3e <LLD <1320 34abb (Site ¹58) 02/12/87~ <LLD 05/14/87~ <LLD <LLD 5'LLD 08/11/87b 3.0 27.7 <LLD 11/10/87 4.1 f4.5 <5. <LLD <1320 CEP data

~ASU data

'Not determined

'Hips TDS (Self-Absorption)

-109-

TABLE XXXII GROUNDMATER GAHHA SPECTROHETRY 1987 Col Tect ion Date Location Collected 60-140 Co-60 Co-56 Nn-54 Zn-65 Zr 60-95 Cs-131 Cs-134 Fn-39 1-131 Ia-140 27ddc (Site f57) 02/12/87 <LLO (LLO <LLD (LLO <LLD <LLD <LLO <LLD <LLO <LLO 05/14/87 <LLO <LLD <LLO <LLD <LLO <LLD <LLO <LLO <LLO <LLO 08/11/87 <LLO <LLD <LLO <LLO <LLO <LLO <LLO <LLO <LLD <LLO <LLO 11/10/87 <LLO <LLD (LLD <LLO <LLO <LLD <LLO <LLD <LLO <LLD (LLD 34abb (Site f58) 02/12/87 <LLO <LLO <LLD <LLO <LLO <LLO <LLO (LLO (LLD <LLD C) 05/14/87 <LLD <LLD <LLO <<LLO <LLO <LLD <<LLD <LLD <<LLO <LLD 9

08/ll/87 <LLO <<LLO <LLD <LLD <LLO <LLD <<LLO <LLD <LLD <LLO <LLO 11/10/87 <LLO <LLD <LLO <LLD <LLD <LLD <LLD <LLD <LLO <LLD <LLO CEP data bASu data Hot Determined

8.7 Surface Water Surface water samples were introduced into the monitoring program during the third quarter of 1982. Samples from PVNGS Reservoir (Sample Site

¹60) and PVNGS Evaporation Pond (Sample Site ¹59) 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 XXXVI.

Iodine-131 was detected in forty-eight of the 1987 surface water samples collected, Activity ranged from less than 0.5 pCi/1 to a high of 25.0 i3.0 pCi/1 on 08/25/87 at the PVNGS Reservoir (Sample Site ¹60).

PVNGS Reservoir samples demonstrated Gross Beta activities ranging from 3.4 +0.5 pCi/1 (a monthly composite sample) to 21 +2 pCi/1 (12/29/87).

The samples from the PVNGS Evaporation Pond (Sample Site ¹59) showed Gross Beta activities ranging from 8.0 20.6 pCi/1 (a monthly composite sample) to 270 i10 pCi/1 (09/22/87).

PVNGS Reservoir and PVNGS Evaporation Pond samples demonstrated strontium

-90 activity ranging from less than 0.5 pCi/1 to 1.4 pCi/1. Strontium-89 results ranged from less than 1 pCi/1 to 3.1 pCi/l.

h Gamma Spectral analysis 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 PVNGS Reservoir (Sample Site ¹60) sample results were all less than LLD. The PVNGS Evaporation Pond (Sample Site ¹59) sample results demonstrated Tritium activity throughout most of 1987.

-112-

XXXIII SURFACE WATER PVNGS RESERVOIR (Sample Site ¹60) 1987 Radiochemical Anal sis Ci 1 Collection Date Beta Iodine-131 Tritium Strontium-89 Strontium-90 01/08/87>> <LLD <LLD 01/15/87>> <LLD <LLD

<LLD <LLD 01/22/8?'1/29/87>>

<LLD <LLD

<LLD <LLD 02/05/87'2/12/87>> C

<LLD 02/19/87>> <LLD 02/26/87>> <LLD 03/05/87>> <LLD 03/12/87>> <LLD 03/19/87>> <LLD 05/14/87'ross 03/26/87>>

04/02/87>>

04/09/87>>

<LLD

<LLD

<LLD 04/16/87>> <LLD 04/23/87>> <LLD 04/30/87>> <LLD 05/07/87>> 6.121.4

<LLD

'CEP data

'Not determined on individual samples. See Table XXXV for results on composite samples.

TABLE XXXIII Cont SURFACE WATER PVNGS RESERVOIR (Sample Site ¹60) 1987 Radiochemical Anal sis Ci 1 Collection Date Gross Beta Iodine-131 Tritium Strontium-89 Strontium-90

<LLD 05/21/87'5/28/87

<LLD 06/04/87~ 1.8+1.1 06/ll/87~ 2.3+1.7

<LLD 06/18/87'6/25/87~

3.0+1.6 07/01/87b <4.8 16+3 5.9+0.5 <LLD <LLD <LLD 07/07/87b <3.8 1713 4.5+0.4 <1020 <LLD <LLD 07/14/87b <3.4 18+3 10.6+0.5 <LLD <1.5 <0.58 07/21/87 <14 18i2 6.6+0.3 <1010 <3 ' <1.4 07/28/87b <10 2013 6.0+0.3 <1050 <1.3 <0.71 08/04/87b <7.8 1912 5.4+0.3 <LLD <1.2 <0.77 08/11/87b 4.2+10 1222 2.5i0.1 <LLD <LLD <0.65 08/18/87b 3.3+1.3 1512 11.0+1.0 <LLD <LLD <0.71 08/25/87b <8.8 1822 25.0+3.0 <LLD <LLD <LLD 09/01/87b <9.2 18+2 9.5+1.4 <LLD <LLD <0.63 09/08/87b <8.6 14+2 4.4+1.3 <LLD <LLD <0.66 09/15/87b <9.2 19+2 6.0+0.6 <LLD <LLD <0.79 09/22/87b <4.2 16+2 5.0+0.4 <LLD <LLD <LLD 09/29/87b <4.2 18+2 5.210.4 <LLD <LLD <LLD 10/06/87b <7.2 17+2 3.810.5 <LLD <LLD <LLD 10/13/87b <8.5 16+2 3.0+0.2 <LLD <LLD <LLD 10/20/87b <8.1 19+2 3.5+0.3 <LLD <LLD <LLD 10/27/87b <8.8 18+2 1.9+0.2 <LLD <LLD <LLD

'CEP data bASU data

'Not determined on individual samples. See Table XXXV for results on composite samples.

TABL II Cont.

SURFACE WATER PVNGS RESERVOIR (Sample Site ¹60) 1987 Radiochemical Anal sis Ci 1 Collection Date Tritium Strontium-89 Strontium-90 11/03/87 <7.5 19+2 <LLD <LLD <LLD <LLD 11/10/87" <8.1 18i2 8.7+0.6 <LLD <LLD <LLD 11/17/87b <11 20t2 5.020.3 <LLD <LLD <LLD 11/24/87b <10 2022 2.5+0.2 <LLD 0.52%0.05 <LLD 12/01/87b <5.8 20i2 1.8+0.1 <LLD <LLD <LLD 12/08/87" <5.6 19+2 4.7+0.4 <LLD <LLD <LLD 12/15/87b <2.9 18i2 4.8+0.3 C

<LLD <LLD 12/22/87b <2.9 1522 12.5+0.7 <LLD <LLD <0.83 12/29/87" <3 ' 21+2 7.5+0.6 <LLD <LLD <0.83

~ASU data Not determined on individual samples. See Table XXXV for results on composite samples.

TABLE XXXIV SURFACE WATER PVNGS EVAPORATION POND (Sample Site ¹59) 1987 Radiochemical Anal sis Ci 1 Collection Date Gross Beta Iodine-131 Tritium Strontium-89 Strontium-90 01/08/87>> <LLD 33492924 01/15/87>> <LLD 2459+1217

<LLD 3791i1297 Ol/22/87'l/29/87'2/05/87

<LLD 3091+1270

<LLD 3333i1313 02/12/87>> <LLD 02/19/87>> <LLD

<LLD 02/26/87'3/05/87'3/12/87>> <LLD

<LLD 03/19/87 <LLD 03/26/87>> <LLD 04/02/87'4/09/87>>

<LLD

<LLD 04/16/87>> 2.8i1.7 04/23/87>> <LLD 04/30/87>> <LLD 05/07/87>> <LLD 05/14/87 <LLD

+Not Determined

'CEP data

'Not determined on individual samples. See Table XXXV for results on composite samples.

TABL IU Cont.

S ACE WATER PVNGS EVAPORATION POND (Sample Site e59) 1987 Radiochemical Anal sis Ci 1 Collection Date Gross Beta Iodine-131 Tritium Strontium-89 Strontium-90

<LLD 05/21/87'5/28/87~

<LLD

<LLD 06/04/87'6/11/87

<LLD 1.6+1.4 06/18/87'6/25/87'7/01/87b <LLD

< 46 220220 <1.4 1590160 <LLD 0.59+0.04 07/07/87'7/14/87b

< 47 210i20 1,1+0.1 <LLD <LLD 0.33+0.02

<130 190ilO 0.73+0.04 1450+50 <1.3 <0.56 07/21/87" <140 21019 7.7i0.4 <1030 <1.4 <0.72 07/28/&jb <130 19017 1.2+0.1 1620+60 <1.4 <0.85 08/04/87b- < 55 190212 4.3i0.2 <LLD <1.2 <0.83 08/11/87b < 34 21028 1.08+0.06 1020+30 <LLD <0.58 08/18/87" < 33 220+9 3.8+0.4 1420+50 <LLD <0.65 08/25/87b < 88 21029 <1.4 1150+40 <LLD <0.55 09/01/87b < 91 230+9 1.8+0.3 <LLD <1.1 <0.65 09/08/87b < 95 220+9 2.1+0.4 1020+40 <LLD <0.69 09/15/87b <220 230K& 1.3+0.1 1000+40 <LLD <0.70 09/22/87b <110 270+10 1.2+0.1 <LLD <LLD 0.59+0.05 09/29/87b < 77 220+10 <1.0 1190+40 <LLD 0.66+0.05 10/06/87b <130 230+10 <1.1 1290+40 <LLD 0.67i0.05 10/13/&7b <140 220+10 <0.61 850130 <LLD 0.6720.05 10/20/87b <220 230110 2.6+0.2 780+30 <LLD 0.7110.05 10/27/87h <250 220ilO <0.6 <LLD <LLD 0.74+0.06 CEP data CASU data

'Not determined on individual samples. See Table XXXU for results on composite samples.

TABLE XXXIV Cont.

SURFACE WATER PVNGS EVAPORATION POND (Sample Site 059) 1987 Radiochemical Anal sis Ci 1 Collection Date Gross Beta Iodine-131 Tritium Strontium-89 Strontium-90 11/03/87b <170 250+10 1.0+0.08 660+20 <LLD <LLD 11/10/87b <260 240+10 <0.52 980+40 <LLD 0.97+0.06 11/17/87b <270 230+9 0.70+0.05 890+30 <LLD 0.7620.05 11/24/87b <230 220+8 <0.68 890+30 <LLD 0.50+0.03 12/Ol/87b < 74 260+10 <0.54 1090+40 <LLD 0.58+0.04 12/08/87b < 95 250110 <0.96 820+30 <LLD 0.59+0.04 12/15/87b < 27 220210 <0.68 C

<LLD 0.9710.06 12/22/87b < 26 210+10 0.99+0.6 820+30 <LLD <0.81 12/29/87b < 17 230i10 1.2+0.1 1140+40 <LLD <0.81 ASU data

'Not determined on individual samples. See Table XXXV for results on composite samples.

SURFACE WA COMPOSITE ~ i 1987 Ci 1 Composite Collection Location Period PVNGS Reservoir January <LLD 6.410.6 <LLD <LLD <LLD (Site ¹60)

February <LLD 6.7+0.6 <LLD <LLD <LLD March 2.021.0 6.6+0.7 <LLD <LLD <LLD April <LLD 3.4+0.5 <LLD <LLD May 6 '+0.6 <LLD <LLD <LLD June <LLD 3.9+0.5 <LLD <LLD <LLD PVNGS Evaporation Pond January 14.9+0.8 <LLD 2421+12&2 (Site ¹59)

February <LLD 14.0+0.8 <LLD 14822899 March 1.7+1.0 10.7+0.8 <LLD 3071%1194 April <LLD &.li0.7 27391908 May <LLD 8.0+0.6 <LLD <LLD June 1.510.9 16.7+0.7 <LLD <LLD <LLD CEP DATA

TABLE XXXVI SIRFACE MATER GAHHA SPECTROHETRY 1987 Collection Date Location Collected Ba-140 Co-60 Co-58 Hn-54 Zn-65 Zr Nb-95 Cs-137 Cs-134 Fe-59 1-131 La-140 PVHGS Reservoir Januarya <LLO <LLD <LLD <LLD <LLO <LLO <LLO <LLO <LLD <LLD (Site f60)

February <LLO <LLO <LLO <<LLO <LLD <LLD <LLO <LLD <<LLO <LLO Harch cLLD cLLD cLLD cLLO cLLD <LLD <LLO cLLO cLLO cLLO April <LLD <LLD <LLD <LLD <LLD <LLO <LLD <LLD <LLD <LLD Hay <LLD <LLD <LLD <LLO <LLO <LLO <LLO <LLO <LLO <LLO June <LLD <LLO <LLO <LLD <LLD <LLO <LLO <LLD <LLO <LLD 07/01/87b <LLO <LLD <LLO <LLD <LLO <LLO <LLO <LLO <LLD 7.5 <LLO 07/07/87b <<LLD <LLD <LLO <LLD <LLO <LLO <LLD <LLD <LLO 3.7 <LLO 07/14/87b <<LLO <LLO <LLO <LLO <LLO <LLO <LLD <LLO <LLD 8.9 <LLD 07/21/87b <<LLD <LLD <LLO <LLO <LLO <LLO <LLD <LLO <LLO 5.4 <LLD 07/28/87b <LLO <LLO <LLO <LLO <LLO <LLO <LLO <LLO <LLO 5.0 <LLD 08/04/87 <LLO <LLO cLLO cLLO cLLD <LLO <LLO <LLD cLLD 4.4 <LLD 08/ii/87b <LLO <LLO <LLO <LLO <LLO <LLO <LLO <LLO <LLO 4.6 <LLD CEP data (aonthly cacaos ite)

ASU data eliot Determined

TAB VI Cont.

SURFACE UATER GAMMA SPECTROMETRY 1987 Col1ecti on Date Location Col T ected Ba-140 Co-60 Co-58 Hn-54 Zn-65 Zr kb-95 Cs-137 Cs-134 Fe-59 1-131 La-140 PVNGS Reservoir 08/18/87b <LLO (LLD <LLO <LLO cllD <LLD <LLD <<LLD cllD 11 <LLO (Cont.) (Site f60) 08/25/87 <LLD <LLD <LLD <LLO <LLD <<LLD <LLO <LLD <LLO 13 <LLO 09/01/87b <LLO <LLO <LLO <LLO <LLO (LLO (LLO <LLO cLLO 7.1 <LLO 09/08/87 <LLO <LLD <LLD <LLD <LLO <LLO <LLO (LLO <LLD <LLD (LLO 09/15/87 <<LLQ <LLO <LLO <LLO <LLO <LLO <LLO <LLO <LLO 5.4 <LlO 09/22/87b <LLO <LLO <LLO <LLO <<LLO <LLD (LLD <LLD (LLD 4.9 <LLD 09/29/87b <LLD <LLD <LLO <LLO <LLD <LLO <LLD <LLO <LLO 7.0 <LLD 10/06/87 (LLD <LLO <LLD <LLD <LLO (LLO <LLO <LLO <LLO 5.8 <LLO 10/13/87 <LLO <LLO <LLO <LLD <LLO <LLD <LLD <LLO <LLO 3.7 <LLD 10/20/87b <LLO <LLD <LLO <LLO <LLO <LLO <LLD <LLD <LLD <LLO <LLO 10/27/87b <LLO <LLO <LLO <LLO <LLO <LLD <<LLO <LLO <LLO <LLD <LLD 11/03/87 <LLD <LLO <LLD <LLD <LLO <LLO <LLD <LLD <LLD (LLO <LLD 11/10/87 <LLD <LLO <LLO <LLD <LLD <LLD <LLO <LLO <LLO 8.3 <LLO 11/17/87b cLlD <<LLD <LLD <LLD <LLD <<LLD (LLD <LLD (LLD 4.2 <LLD 11/24/87b <<LLO <LLD <LLO <LLO <LLO <LLD <LLO (LLO <LLD <LLO <LLD 12/01/87b <LLO <LLO <LLD <LLO <LLO cllQ cllQ cLLQ <LLO <LLD <LLD 12/08/87b (LLO <LLD <LLO <LLO <LLO <LLD <LLD <LLD <LLD 4.3 <LLO 12/15/87 (LLO <LLO <LLO <LLD <LLO <LLO <LLO (LLO <LLO 4.8 <LLD 12/22/87b <<LLD <LLD <LLO <LLD <LLD (LLO <LLO <LLD <LLD 13 <LLO 12/29/87b <LLO <LLQ <LLO <LLQ <LLO <LLD <LLO <LLO <LLO 7.6 <LLD ASU data

TABLE XXXVI Cont.

SNFACE VATER 6AHHA SPECTROHETRY 1887 Co11ect i on Date Location Col tsntsd Na-140 Co-60 Co-56 Nn-54 Zn-65 Zr No-95 Cs-131 Cs-134 Fn-59 1-131 La-140 PVKGS Evaporation January <LLD <LLO <LLO <LLD <LLO <LLO <LLO <LLO (LLO <LLD Pond (Site f59)

Februarya <LLO <LLO <<LLD <<LLD LLD LLO <LLO LLD LLO <LLD Harch <LLO <LLO <LLO <LLO <LLO <LLO <LLD <LLD <LLO <LLO Apri1 <LLD <LLD <LLD <LLO <LLD <LLO <LLD <LLO <LLD <LLO Haya <<LLO <LLO <LLD <<LLO <LLD <<LLD <LLO <LLO <LLO <LLD June <LLD <LLO <LLO cLLO <LLD <LLO <LLO cLLQ <LLQ cLLQ 6 07/01/87 <LLO <LLD <LLO <LLO <LLO <LLO <LLO <LLO <LLD <LLO <LLO t

lO 07/07/87 <LLO <<LLO <LLO <LLD <LLO <LLO <LLO <LLD <LLO <LLO <LLO 6

07/14/87 cLLO cLLD <LLD <LLD cLLD cLLD cLLD <LLD <LLD <LLD <LLD 07/21/87" <LLO <LLO <LLO <LLO <LLD <LLO <LLD <LLO <LLO 8.5 <LLD 07/28/87 <LLD <LLO <LLO <LLD <LLD <LLO <LLD <LLD <LLD <LLD <LLO 08/04/87 <LLD (LLD <LLO <I.LD <LLO <LLD <LLD <LLD <LLD 5a3 <LLD 08/11/87" <LLD <LLO <LLO (LLD <LLO <LLO (LLD <LLD <LLD <LLO <LLD CEP data (monthTy composite)

ASU data cKot Determined

TABLE XXXVI Cont.

SURFACE llATER GAHHA SPECTROHETRY 1987 Collection Date Location Collected 54-140 Co-50 Co-55 54-54 Zo-SS Zr 53-95 Ce-131 Cs-134 Fe-Bt 1-131 te-140 PYHGS Evaporation 08/18/87 <LLO <LLO <LLO <LLO <LLD (LLO <LLD <LLO <LLD 4.0 <LLD Pond (Cont.) 08/25/87 <<Li.O <LLD <LLD <LLD <LLD <LLO <LLD <LLD <LLD <LLD <LLD (Site f59) 09/01/87 <LLD <LLD <LLD <LLD <LLO <<LLO <LLO <LLO <LLD <LLO <LLO 09/08/87 <LLO <LLD <LLO <LLD (LLD <LLO <<LLD <LLO <LLD <LLD <LLO 09/15/87 <LLD <LLD <LLD <LLO <LLO <LLO <LLD <LLO <LLO <LLO <LLO 09/22/87 <LLD <LLD <LLD <LLO <LLD <LLD <LLO <LLD <LLD <LLO <LLD 09/29/87 <LLO LLO <LLD LLD <LLO <LLO <LLD <LLO <LLO <LLD <LLO 10/06/87 <LLD <LLO <LLO <LLD <LLO <LLD <LLO <LLO <LLO <LLO <LLO 10/13/87 <LLO <LLO <LLD <LLD <LLO <LLD <LLO <LLD <LLO <LLD <LLO 10/20/87 <LLD <Ll.D cLLD cLLD <LLD <LLD <<LLD <LLD <LLD <LLD <LLO 10/27/87 <LLO <LLO <LLO <LLD <LLD <LLO <<LLD <LLO <LLO <LLD <LLD 11/03/87b (LLD <LLO <LLO <LLO <LLO <LLD <LLD <LLD <LLO <LLO <LLD 11/10/87 <LLO <LLO <LLD <LLD <LLO <LLD <LLO <LLO <LLD <LLO <LLO 11/17/87 <LLD <LLO <<LLO <LLO <LLO <LLO <LLD <LLD <LLD <LLD <LLO 11/24/87b <LLD <LLQ <LLD <LLD <LLD <LLO <LLO <LLO <LLO (LLO <LLO 12/01/87b <LLO <LLD <LLD <LLO <<LLO <LLO <LLO <LLD <LLD <LLD <LLD 12/08/87b <LLO <LLO <LLO <LLO <LLD <LLO <LLO <LLD <LLO <LLO <LLO 12/15/87b cLLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 12/22/87b <LLO <LLD <LLO <LLD <LLO <LLO (LLD <LLD <LLD <LLO <LLD 12/29/87b <LLO <LLO <LLO <LLD <LLD <LLD <LLO <LLO <LLO 7.3 <LLO bASU data

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

1. Al Lueck, Jr. Dairy (Sample Site ¹55)

2. Cordell Baisley Dairy (closed 08/30/87) (Sample Site ¹50)

3. Butler Dairy (Sample Site ¹51)

4. John Kerr Dairy (Sample Site ¹53)

5. Hamstra ¹2 (designated operational control location) (Sample Site

¹56)

6. Paul Skousen Dairy (Sample Site ¹54)

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 XXXVIII. Site ¹56 is the control. Analytic method involved radiochemical separation, followed by gas flow beta proportional counting.

Iodine-131 analyses of the milk samples showed positive results in two of the samples. Activity was detected on 05/15/87 samples from the Al Lueck, Jr. Dairy (2.6 +0.7 pCi/1) and the Cordell Baisley Dairy (2.4

+0.7 pCi/1) (Sample Sites ¹55 and 50, respectively). Sample Site ¹55 again yielded activity on 07/20/87, but below 1 pCi/liter.

None of the milk samples were positive for Strontium-89 or -90.

Milk samples gave no positive results for gamma-emitting nuclides, except that Iodine-131 was detected in a 09/21/87 sample from Hamstra ¹2 Dairy (Sample Site ¹56) via gamma spectral analysis. Radiochemical analysis of the same sample determined Iodine-131 to be (0.96 pCi/1, via gas flow beta proportional counting--the analytical method used to generate the data in Table XXXVII.

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TABLE XXXVI I

~198 Ci 1 Date Collection Location Collected Iodine-131 Strontium-89 Strontium-90 Al Lueck, Jr. Dairy 01/16/87~ <LLD (Site ¹55) 02/13/87~

03/13/87 <LLD <LLD j

04/17/87a <LLD <LLD 2.6 +0.7 <LLD <LLD 05/15/87'6/19/87~

<LLD 07/20/87" 0.69 20.04 08/17/87b <0.59 09/21/87b <0.97 10/19/87" <0.65 11/16/87b <0.57 12/21/87"

'CEP data bASU data

'Not determined

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TABLE XXXVII Cont:

MILK Fresh 198 Ci 1 Date Collection Location Collected Iodine-131 Strontium-89 Strontium-90 r,

Paul Skousen Dairy (Site 854)

<LLD 01/16/87'2/13/87'3/13/87'4/17/87'5/15/87

<LLD

<LLD 06/19/87~

I

<LLD 07/20/87b <0.57 08/17/87 <0.58 09/21/87 <0.97 10/19/87b <0.65 11/16/87" <0.56 12/21/87b <0.51

'CEP data bASU data Not determined

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TABLE XXXVII Cont MILK Fresh

~198 Ci 1 Date Collection Location Collected Iodine-131 Strontium-89 Strontium-90 John Kerr Dairy <LLD <LLD <LLD (Site ¹53)

Ol/16/87'2/13/87'3/13/87~

<LLD 04/17/87 <LLD <LLD

<LLD <LLD <LLD 05/15/87'6/19/87'7/20/87b <LLD <LLD

<LLD 08/17/87" <0.57 09/21/87" <0.96 10/19/87" <0.66 11/16/87" <0.55 12/21/87b

'CEP data bASU data

'Not determined

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TABLE XXXVII Cont MILK Fresh

~198 Ci 1 Date Collection Location Collected Iodine-131 Strontium-89 Strontium-90 Butler Dairy <LLD <LLD (Site ¹51) 01/16/87'2/13/87'3/13/87

<LLD

<LLD

<LLD 04/17/87'5/15/87a 06/19/87~ <LLD 07/20/87b <0.57 08/17/87b <0.59 09/21/87 <1.0 10/19/87b <0.64 11/16/87b <0.55 12/21/87b

~CEP data bASU data

'Not determined

-128-

TABLE XXXVII Cont:

MIIX Fresh 198 Ci 1 Date Collection Location Collected Iodine-131 Strontium-89 Strontium-90 Cordell Baisley 01/16/87~ <LLD Dairy (Site ¹50) 02/13/87~ <LLD 03/13/87a <LLD <LLD

<LLD <LLD 04/17/87'5/15/87 2.4"+0.7 <LLD <LLD 06/19/87~

07/20/87b <0.52 08/17/87b <0.59 09/21/87b 10/19/87" 11/16/87" 12/21/87b

~CEP data hASU data

'Not determined

~Not sampled (Dairy closed)

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TABLE XXXVI I LK Fresh Cont O

~198 Ci 1 Date Collection Location Collected Iodine-13 Strontium-89 Strontium-90 Hamstra ¹2 Dairy 01/16/87~

(Site ¹56)

(Control) 02/13/87'3/13/87'4/17/87

<LLD

<LLD <LLD 05/15/87'6/19/87~

<LLD <LLD 07/20/87~ <0.55 08/1787"

<2.1'0.96 09/21/87~

10/19/87~ <0.68 11/16/87 <0.59 12/21/87~

~CEP data "ASU data

'Not determined Due to background fluctuation

-130-

TABLE XXXVIII

~HECK FRESH GAHHA SPECTROHETRY 1987 Date Collection Location Collected Ba-140 Co-60 Co-58 Hn-54 Zn-65 Zr Hb-95 Cs-137 Cs-134 Fe-59 La-140 Al Lueck, Jr. Dairy 01/16/87 <LLO <LLO <LLD . <LLO <LLO <LLO <LLO <LLO <LLO (Site f55) 02/13/87 <LLD LLO LLO <LLD <LLD LLO LLO LLD LLD 03/13/87 <LLO <LLO <LLD <LLD <LLD <LLO <LLD <LLD <LLO 04/17/87 <LLO <LLO <LLO <LLO <LLD <LLO <LLO (LLO (LLD 05/IS/87 LLO LLO LLO LLO LLQ LLD LLO LLO LLO 06/19/87 <LLO <LLO <LLO <LLO <LLO <LLD <LLD <LLO (LLO 07/20/87 <LLD <11 <10 <11 <LLO <LLD <11 <9.5 <LLD <LLO 08/17/87 <36 <11 <9.8 <11 <LLD <LLO <11 <9.9 <LLD <13 09/21/87 <40 <11 <10'9.4 <LLO <18/LLD <LLD <I.LO <LLD <14 10/19/87 <38 <11 <11 <11 <LLO <18/LLD <LLD <LLO <LLO <13 11/16/87 <39 (11 (10 <10 <LLD <LLO <11 <LLO <LLO <16 12/21/87 (LLD <LLD <LLD <LLO <LLD <LLD <LLO <LLO <LLD <LLO CEP data bASU data Hot Determined

TABLE XXXVII I Cont.

~HILK FRESH 6ANKA SPECTROKETRY 1987 Date Collection Location Collected Ba-140 Co-60 lln-54 Zn-55 Zs 59-95 Cs-131 Cs-134 Fn-59 La-149 Paul Skousen Dairy 01/16/87 <LLO <LLD <LLD <LLO <LLO <LLO <LLD <LLO <LLD (Site f54) 02/13/87 LLO LLO LLD LLO LLO LLO LLO LLD LLD 03/13/87 LLO <LLO LLO LLD <LLO <LLO LLD LLO <LLO 04/17/87 <LLO <LLO <LLO <LLO <LLO <LLD <LLD <LLD <LLO 05/15/87 <LLD <LLD (LLD <LLD <LLD <LLO <LLD (LLD <LLO 06/19/87 <LLD <LLD <LLO <LLO <LLO <LLO <LLD <LLO <LLD 07/20/87 <40 <11 (10 (9.7 <26 <18/LLD <11 <9.6 <24 <16 08/17/87 <LLD <12 <9. 7 <9.8 <LLO <LLO <11 <LLO <24 <14 09/21/87 <38 <11 (9.2 <9.1 <26 <19/LLD <11 <9.5 <LLD <17 10/19/87b <40 <11 <12 <10 <LLO <19/LLD (12 <10 <25 <17 11/16/87 <45 <12 (11 <11 <LLO <18/(12 <12 <23 <<17 12/21/87 <LLO <LLD (LLD <LLD <LLD <LLD <LLD <LLO <LLD <LLD CEP data

~ASU data cKot Determined

TABLE XXXVIII Cont.

HILK FRESH 6AHHA SPECTROHETRY 1987 Date Collection Location Collected 64-140 Co-60 Co-5B Mn-54 Zn-65 Zr 60-95 Ce-131 Cn-134 Fo-59 14-140 John Kerr Dairy 01/16/87 <LLD <LLD <LLD <Li.o <LLD (LLD <LLO LLD <LLO (Site f53) 02/13/87 <LLO <LLO <LLD <LLO <LLO <LLO <LLO <LLO <LLD 03/13/87 LLO LLO LLO LLO LLO LLO LLO LLO LLO 04/17/87 LLD LLO LLD <LLO LLD <LLD LLO LLD <LLD 05/15/87 <LLO LLD <LLD <LLO <LLD <LLD <LLD <LLO <LLD 06/19/87 <LLO (LLO <LLD <LLD <LLD <LLO <LLO <LLO (LLD 07/20/87 <42 <12 <10 <9.7 <LLO <<18/LLD <LLO <9.1 <LLO <13 08/D/87b <LLD (11 <9.6 <9.5 <LLD <18/LLD <LLD <LLD <LLO <LLD 09/21/87 <36 c12 c9.8 <9.8 <LLO cLLO <LLO cLLO <LLO c13 10/19/87 <LLD <LLD <LLD <LLO <LLD <LLD <LLO <LLD <LLD <LLO 11/16/87 <LLO <LLD <LLD <LLD <LLO <LLO <LLO <LLD <LLD <LLD 12/21/87 <35 <11 <10 (10 <LLO <LLD <14 <95 <LLD (14 CEP data bASu data Rot Determined

TABLE XXXVII I Cont.

H ILK FRESH GAHHA SPECTROHETRY 1987 Date Collection Location Collected Ba-140 Co-60 Hn-54 Zn-65 Zr Rb-95 Cs-137 Cs-134 Fe-59 La-140 Butler Dairy 01/16/87 LLO LLD <LLD <LLO <LLD LLD LLD <LLD <LLO (Site f51) 02/13/87 <LLD <LLO <LLO <LLO <LLD <LLO <LLD <LLO <LLD 03/13/87 LLO <LLO LLO <LLO'LLO LLO LLO <LLO LLO 04/17/87 <LLO <LLD <LLO <LLD <LLD <LLD <LLO <LLO <LLO 05/15/87 <LLD <LLD <LLO <LLO <LLD <LLD <LLD <LLO <LLO 06/19/87 LLO LLO <LLO <<ILO <LLO <LLO LLO LLO <LLO 07/20/87 <LLD <12 <11 <9.9 <LLD (18/LLO (LLD <9.1 (LLD <LLO 08/17/87b <35 (12 <LLD <9.5 <LLO <LLD <11 <LLO <LLD <13 09/21/87 <41 <LLD <<11 <10 <LLO <18/LLO <11 <LLO <24 <16 10/19/87 <<37 <12 <9.1 (10 <LLD <LLD <11 <10 <24 <13 11/16/87 <40 <12 <11 <11 <LLO <18/LLD <12 <10 <26 <16 12/21/87 <35 <<11 <9.2 <10 <LLO <LLO <18 <11 <LLD <LLO CEP data ASU data Hot Determined

TABLE jtili Cont.

0~ILK FRESH GAHHA SPECTROHETRT 1987 Date Collection Location Col lasted 04-140 Co-60 Co-50 Kn-54 Zn-65 Zr Ifb-95 Cs-131 Cs-134 Fe-59 La-140 Cordel 1 Ba is ley Dairy 01/16/87 <LLD <LLO <LLD <LLO <LLD <LLO <LLO <LLO <LLO (Site t50) 02/13/87 <LLO LLO <LLO LLD LLO <LLD <LLD (LLD <LLD 03/13/87 <LLD <LLD <LLD <LLO <LLO <LLO <LLD <LLD <LLD 04/17/87 LLO <LLO LLD LLD LLD <LLD LLD (LLD LLO 05/15/87 <LLO LLD <LLD LLO <LLO LLD <LLO <LLO <LLO 06/19/87 <LLD <LLD <LLD <LLO <LLO <LLD <LLO <LLD <LLD 0

07/20/87 <41 <11 <11 <10 (LLO <19/LLO (11 <LLO <LLD <14 Vl 0 08/17/87 <39 <11 <10 <9.3 <LLO <LLD <11 <9.3 <LLD <15 09/21/87 d d d (I d d 10/19/87 cj d d Ej d d 11/16/87 d <I d d Ej d 12/21/87b d d d Ej d d d CEP data ASU data Not Determined Ijo sample taken (dairy closed)

TABLE XXXVII I Cont.

NIL@ FRESH GANNA SPECTRONETRY 1987 Date Collection Location Collected Ba-140 Co-60 Co-58 Nn-54 Zn-65 Zr Nb-95 Cs-137 Cs-134 Fe-59 La-140 Hamstra f2 Dairy 01/16/87 LLD <LLD LLD <LLD LLO <LLD <LLD LLD <LLD (Site f56)

(Control) 02/13/87 LLD LLD LLD LLO LLD LLD LLO LLO LLD 03/13/87 <LLD <LLO <LLD <LLD <LLD <LLD <LLO <LLD <LLD 04/17/87 <LLD <LLO <LLD <LLD <LLD <LLD <LLO <LLD <LLO 05/15/87 <LLO <LLO <LLO <LLO <LLD <LLD <LLO <LLD <LLO 06/19/87 <LLD <LLD <LLD <LLD <LLO <LLD <LLD <LLO <LLD 07/20/87 <LLD <13 <10 <9.6 <26 <LLD <11 <9.2 <LLO <14 08/17/87 <36 <12 <11 <9.3 <LLD <18/LLO <11 <9.5 <LLO <17 09/21/87 <38 <11 <10 <10 <LLD <LLD <11 <9.2 <24 <14 10/19/87 <LLD <LLD <LLO <LLO <LLD <LLD <LLO <LLD <LLD <LLO 11/16/87b <LLO <LLD <LLO <LLD <LLD <LLD <LLO <LLD <LLO <LLO 12/21/87 <39 <11 <10 <10 <LLD <18/LLD <13 <10 <LLD <13 CEP data ASU data Not Determined

8.9 Further Observations Gamma isotopic assays of 68 milk samples yielded only one, Hamstra ¹2 Dairy (Sample Site ¹56) (September 21), in which any gamma isotope exceeded the lower limit of detection. In this instance, the iodine-131 concentration (11.4 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.

Three of the 68 milk samples analyzed radiochemically contained iodine-131 above the lower limit of detection.

Mean values of Iodine-131 in the evaporation pond and the reservoir were 2.1 pCi/1 and 6.0 pCi/1, respectively.

Gross alpha and beta analyses were performed on 110 surface water, ground water and drinking water samples. All ground water and drinking water samples were within the natural backgrounds found in the area. The gross beta activity in the evaporation pond (Sample Site ¹59) was approximately ten times greater than that measured in the reservoir (Sample Site ¹60).

Strontium-90 analyses were performed on 110 surface water, ground water and drinking water samples. Except for certain indications of strontium-90 in drinking water and surface water, all results were less than the lower limits of detection for the specific measurements. The indications of strontium-90 were <1.4 pCi/1 in all instances.

Strontium-89 analyses were performed on 66 surface water samples. Except for one result of 0.52 pCi/liter, all results were less than the lower limits of detection for the specific measurements. The indications of strontium-89 were typically less than 1 pCi/liter; the maximum indication was <3.1 pCi/liter.

All of the 36 milk samples assayed for strontium-89 and strontium-90 were below the lower limits of detection.

-137-

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

1987

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XXXIX RADIOIOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

Name of Facility: Palo Verde Nuclear Generatin Station Reporting Period: 1987 Location of Facility: Marico a Count Arizona Location with Highest Medium or Type and All Indicator Annual Mean Control Number of Pathway Sampled Total Number Lower Limit Locations Name ~Mean f Locations Nonroutine (Unit of of Analyses of Detection Mean(f) Distance Range Mean(f) Reported Measurement Performed LLD a Ran e Direction Ran e Measurements Air Particulates Gross 'Beta(576) 0.002 0.028(527/527) 21A+ 0.029(51/51) 0.028(49/49) 0 (pCi/m3) 0.013-0.055 3 miles S 0.014-0.055 0 '12-0.050 Gross Alpha(576) 0.005 0.006(5/527) 15A 0.008(1/51) <LLD 0.005-0.008 2 miles NE 0.008 Gamma Spec(48) (b)

Iodine-131(576} 0.007 0.015(9/527) 14A 0.024(1/51} 0.00&(1/49) 0.008-0.024 2 miles NNE 0.024 0.008 Human Vegetation Iodine-131(36) 20 <LLD <LLD (pCi/kg - wet)

Gamma Spec(36) (b) <LLD <LLD <LLD Animal Vegetation Strontium-89(76) 100 <LLD N/A (pCi/kg)

Strontium-90(76) 50 <LLD <LLD <LLD N/A Gamma Spec(76) (b)

Cs-137 56 199(l/76) Skousen Dairy 199(1/15)'99 N/A 27 Miles E 199 (Site 854)

Drinking Water Gross Alpha(36) 1.0 4.3(21/36) McArthur 5.1(6/12) N/A (pCi/1) 1.1-18.0 Residence 2.4-6.9 9 miles NNW (Site 046)

TABLE XXXIX Cont.

RADIOMGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

Name of Facility: Palo Verde Nuclear Generatin Station Reporting Period: 1987 Location of Facility: Marico a Count Arizona Location with Highest Medium or Type and All Indicator Annual Mean Control Number of Pathway Sampled (Unit of Total Number of Analyses Lower Limit Locations Name ~Mean f Locations Nonroutine of Detection Mean(f) Distance Range Mean(f) Reported Measurement Performed LLD a Ran e Direction Ran e Measurements Drinking Water Gross Beta(36) 2.0 5.0(25/36) McArthur 6.4(8/12) N/A 0 (pCi/1) Cont. 2.0-10.0 Residence 2.8-10.0 9 miles NNW (Site e46)

Strontium-90(36) 0.5 0.7(9/36) N/A 0.7(3/12) N/A 0.7-0.8 0.7-0.8 Tritium(54) 1000 1180(6/33) N/A 1180(2/11) N/A 1030-1340 1030-1340 Gamma Spec(54) (b) <LLD <LLD <LLD N/A Groundwater Gross Alpha(6) 1.0 4.2(2/6) Well 27ddc 4.2(1/3) N/A (pCi/1) 4.1-4.2 Onsite 4.2 (Site e57)

Gross Beta(8) 2.0 4.6(4/8) Well 27ddc 5.0(2/4) N/A 3.0-5.5 Onsite 4.6-5.3 (Site e57)

Strontium-90(8) 0.5 <LLD <LLD <LLD N/A Tritium(8) 1000 1320(2/8) N/A 1320(1/4) N/A 1320-1320 1320-1320 Gamma Spec (b) <LLD <LLD <LLD N/A 0

TABL X Cont.

RADIOLOGICAL ENVIRONMENTAL NITORING PROGRAM ANNUAL

SUMMARY

Name of Facility: Palo Verde Nuclear Generatin Station Reporting Period: 1987 Location of Facility: Marico a Count Arizona Location with Highest Medium or Type and All Indicator Annual Mean Control Number of Pathway Sampled Total Number Lower Limit Locations Name ~Mean f Locations Nonroutine (Unit of of Analyses of Detection Mean(f) Distance Range Mean(f) Reported Measurement Performed LLD a Ran e Direction Ran e Measurements Surface Water Gross Alpha(66) 1.0 2.5(5/66) Reservoir 3.2(3/33) N/A (pCi/1) 1.5-4.2 Onsite 2.0-4.2 (Site ¹60)

Gross Beta(66) 2.0 100.2(66/66) Evap Pond 184.9(33/33) N/A 3.4-270 Onsite 8.0-270 (Site ¹59)

Iodine-131(104) 0.5 4.5(48/104) Reservoir 6.0(30/52) N/A 0.7-25.0 Onsite 1.8-25.0 (Site ¹60)

Tritium(74) 1000 1561(33/74) Evap Pond 1615(30/37} N/A 660-3791 Onsite 660-3791 (Site ¹59)

Strontium-89(66) 1.0 <LLD (LLD N/A Strontium-90(66) 0.5 0.69(13/66} Evap Pond 0.69(13/33) N/A 0.50-0.97 Onsite 0 '0-0.97 (Site ¹59)

Gamma Spec 6 '(25/66) Reservoir 6.6(21/33) N/A Iodine-131(66) 1.0 3.7-13.0 Onsite 3.7-13.0 (Site ¹60)

TABLE XXXIX Cont.

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

Name of Facility: Palo Verde Nuclear Generatin Station Reporting Period: 1987 Location of Facility: Marico a Count Arizona Location with Highest Medium or Type and All Indicator Annual Mean Control Number of Pathway Sampled (Unit of Total Number of Analyses Lower Limit of Detection Locations Name ~Mean f Locations Nonroutine Mean(f) Distance Range Mean(f) Reported Measurement Performed LLD a Ran e Direction Ran e Measurements Milk Iodine-131(68) 0.5 0.8(24/56) Cordell 1.2(3/8) 1.0(5/12)

(pCi/1) 0.5-2.6 Baisley 0.5-2.4 0.6-2.1 7 miles NE (Site ¹50)

Strontium-89(36) 1.0 <LLD <LLD <LLD <LLD Strontium-90(36) 0.5 <LLD <LLD <LLD Gamma Spec(68) (b) <LLD <LLD <LLD (a)CEP data (b) See Table VI Location 29A (1 mile west) has the same mean and range, with an (f) value of (52/52).

N/A Not Applicable Mean and Range are based on detectable measurements only. The fraction of detectable measurements at specified locations is indicated in parentheses (f). "<" data points are set equal to the value that the measurement is less than (except gamma spec and surface water).

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

10. 0 Q,~~~~

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.

4) 1984 Annual Report, Palo Verde Nuclear Generating Station's Pre-Operational Monitoring Program.

5) Palo 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.

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APPENDIX A 1986 EPA CROSS CHECK RESULTS (CEP)

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EPA CEP Known Value Reported Value

+

1/86 Gross Alpha 3 + l5 5+ 1 6+1 7+1 Gross Beta 7+5 7+1 9+1 10+ 1 3/86 Gross Alpha 15+5 13+3 15+3 16+3 Gross Beta* 8+5 15 + 3x*

+ 3>x

]7 + 3**

/86 Gross Alpha 8+5 No Data Reported Gross Beta 15+ 5 No Data Reported 7/86 Gross Alpha 6+5 5 + 1 6 + 1 6 + 1 Gross Beta 18+5 15+ 3 16+3 18+3 9/86, Gross Alpha 15+5 12+ 2 12+2 14+2 Gross Beta*** 8+5 17 + 4 18+ 3 20+ 3 11/86 Gross Alpha 20+ 5 No Data Reported Gross Beta 20+ 5 No Data Reported

• Spike sample was reanalyzed and a value of 6 + 2 pCi/1 was obtained.

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

<<Spike sample was reanalyzed and a value of 7 2 2 pCi/1 was obtained.

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EPA CROSS-CHECK PROGRAM

~86 EPA CEP Known Value Reported Value Date Parameter Ci 1 f2 0'9 2/86 Cesium-134 3015 t4 24+4 33i5 Cesium-137 22 2 5 1824 16 i 4 21+4 Chromium-51 38 i 5 55 2 10 53 + 10 52 2 10 Cobalt-60 18 2 5 25i2 29+4 2113 Zinc-65* 4025 57 t 15 56 + 12 56 2 12 6/86 Cesium-137 10k 5 922 12 f 2 10 2 2 Chromium-51 0 i 5 No Data Reported Zinc-65 8645 87 2 8 8428 90i8 Cobalt-60 66 i 5 51 2 5 53 2 5 58i5

• Spike sample was reanalyzed and a value of 41 114 pCi/1 was obtained.

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EPA CROSS-CHECK PROGIMM 986 Gamma In Water Continued EPA CEP Known Value Reported Value Date Parameter Ci 1 +1 6 Ci 1 +2 Cesium-134 49i5 0'725 38 2 5 39 i 5 10/86 Cesium-134 28i5 2222 26i2 28i2 Cesium-137 442 5 42 43 ii 4 1

48 i 3 Cobalt-60 31+ 5 28i4 2924 2924 Zinc-65 85i5 77k 7 78 2 7 79 2 7 Chromium-51 59 2 5 32 42 ii 10 10 45 2 10

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EPA CEP Known Value Reported Value

+

2/86 Tritium>> 5227 + 523 4100 + 410 4590 + 459 4190 i 419 6/86 Tritium>>* 3125 i 360 2290 + 230 2170 + 220 2050 + 210 10/86 Tritium 5973 + 597 5462 + 600 5257 + 600 5880 + 600

>>Spike sample was reanalyzed and a value of 5028 i 400 pCi/1 was obtained

>>>>Spike sample was reanalyzed with the LS-5801 and a value of 3533 + 565 pCi/1 was obtained.

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EPA CEP Known Value Reported Value

+ +

1/86 Strontium-89 31+ 5 35+1 37+1 40+ 1 Strontium-90* 15 + 1.5 19 + 3.1 18 + 3.4 22 + 2.6 5/86 Strontium-89 5 + 5 4 + 1 5 + 1 6 + 1 Strontium-90 5 + 1.5 2.+ 1 3+1 4+ 1

>'~Spike sample was reanalyzed and a mean value of 15 + 3 pCi/1 was obtained.

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EPA CEP Known Value Reported Value 4/86 Low Level 9 + 6 9 + 4 7 + 4 7 + 4 8/86 High Level>> 45+6 30+4 33+4 39+4

>>Spike sample was reanalyzed and a value of 40 + 4 pCi/l was obtained.

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EPA CEP Known Value Reported Value

+

6/86 Iodine-131 41+ 6 36+ 6 32+4 40+ 7 Cesium-137 31+ 5 34+5 26+4 28+4 Strontium-89~ 0+ 5 13+4 15+4 16+4 S trontium- 16 + 1.5 0 0

0 90'otassium 1600 + 80 mg/1 1568 mg/1 1577 mg/1 1633 mg/1 10/86 Iodine-131 49+6 43+ 3 33+ 9 37+4 Cesium-137* 39+5 53 + 25 58 + 22 48 + 20 Strontium-90 0 + 1.5 No Data Submitted Strontium-89 9 + 5 No Data Submitted Potassium 1565 + 78 mg/1 1470 mg/1 1490 mg/1 1505 mg/1

~cSpike sample was re'analyzed and a value of 34 2 5 pCi/1 was obtained.

'Reported 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.

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EPA CEP Known Value Reported Value

+

2/86 Low Level 9 + 6 9 + 1 9 + 1 10+ 1

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EPA CEP Known Value Reported Value 4/86 Gross Alpha 15+5 15+3 15+ 3 16+3 Gross Beta 47+5 56+ 6 57+6 58+ 6 Strontium-90* 18 + 1.5 26+4 27+4 28+4 Cesium-137 10+ 5 8+3 9 + 3 9+3

/86 Gross Alpha 22+5 23+

22+

2 2

26+2 Gross Beta 66+5 64+ 2 63+2 66+ 2 Strontium-90** 22 + 1.5 17+3 21+ 3 18+ 3 Cesium-137 22+5 23+ 3 25 + 3 22+3

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

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

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EPA CEP Known Value Reported Value

+

1/86 Iodine-131 20+ 6 20+ 5 21+ 7 22+7 Cesium-137 15+5 15+ 5 16+ 5 17+5 Potassium 950 + 143 mg/kg 910 mg/kg 950 mg/kg 940 mg/kg S trontium- 89 25+5 No Data Reported Strontium-90 10 + '1.5 No Data Reported 7/86 Strontium-89 30+ 5 23+5 25+5 27+5 Strontium-90 19, + 1.5 22+4 23+4 26+4 Iodine-131* 30+ 6 18+5 18+5 19+5 Cesium-137 20+ 5 15+ 6 16+ 6 16+6 Potassium 1150 + 58 mg/kg 1210 mg/kg 1235 mg/kg 1245 mg/kg

>'~No reason can be found for the discrepancy. Unable to reanalyze due to short half life.

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APPENDIX B 1987 EPA CROSS CHECK RESULTS (CEP)

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EPA CEP Known Value Reported Value

+

4/87 Gross Alpha 14+5 20+ 1 18+1 17+1 Gross Beta~'~ 43+5 63+2 64+2 66+2 Strontium-90 17 + 1.5 19 + 10 23 + 10 24 + 10 Cesium-137 8 + 5 17+5 19+5 20+ 5

>'~Calculation error. Reported values should have been 50 + 5, 51 + 5 and 53 + 5 pCi/filter (x 51).

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EPA CEP Known Value Reported Value 1/87 Gross Alpha 11+ 5 12+ 2 12+2 12+2 Gross Beta~ 10+ 5 22+6 25+6 27+7 3/87 Gross Alpha 3+5 4+ 2 4+ 2 4+ 2 Gross Beta 13+5 12+4 9+4 8+4 rsvp Gross Alpha 11+ 5 ll+ 2 11+ 2 12+2 Gross Beta+>> 7+5 17+6 18+6 19+ 6

• QA glassware contamination resulted in a high beta value. Sample was reanalyzed and results were within EPA range.

<o>Elevated activity due to beta contamination of QA reagents". Same reagents not used in the lab and therefore client samples were not affected.

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EPA CROSS-CHECK PROGIKN 198 Gamma in Water EPA CEP Known Value Reported Value Date Parameter Ci 1 i2 0'5 2/87 Cobalt-60 50 2 5 + 5 5525 56 i 5 Zinc-65 9125 102 114 ii 7 6

108 t 6 i

'1 Cesium-134 59 5 2 3 57k 2 60i3 Cesium-137 87 i 5 109 2 6 98i 6 102 i 5 sv Cobalt-60 64 2 5 69 i 69i5 5

71 2 5 Zinc-65 10k 5 12k 3 14+3 16 i 3 Cesium-134 40 t 5 4023 39i3 38i3 Cesium-137 80 2 5 82k 5 84k 5 8515 Chromium-51 41+5 4623 4423 40 t 3

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EPA CEP Known Value Reported Value

+

2/87 Tritium 4209 + 421 4600 + 500 4510 + 500 4330 + 500 6/87 Tritium 2895 + 357 2866 + 285 2831 + 288 2792 + 288

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EPA ~

CEP Known Value Reported Value 1/87 Strontium-89 25+5 15+5 17+ 6 20+ 5 Strontium-90 25 + 1.5 22+ 5 24+6 24+ 5 5/87 Strontium-89 41+ 5 26+5 34+5 34+ 5 Strontium-90 20 + 1.5 14+3 15+3 17+ 3

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EPA CEP Known Value Reported Value

+

3/87 Low Level>> 7.0 + 0.7 2+4 2+4 2+4

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

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EPA CEP Known Value Reported Value 6/87 Strontium-90 35 + 1.5 29+ 3 28+3 32+ 3 Cesium-137 74+5 75+2 77+2 70+ 2 Strontium-89>> 69+5 5+ 2 5+2 4+ 2 Iodine-131 59+6 63+ 2 64+2 64+2 Potassium 1525 + 76 mg/1 1617 + 150 mg/1 1648 + 150 mg/1 1648 + 150 mg/1

>'<Unable to reanalyze due to limited sample.

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EPA CEP Known Value Reported Value

+

2/87 Low Level 9.0 + 0.9 9.0 + 1.0 8' + 0.5 8.0 + 0.5

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APPENDIX C 1987 CROSS CHECK RESULTS (ASU)

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EPA INTERCOMPARISON RESULTS JANUARY 1987 THROUGH APRIL 198 THIS PAGE IS INTENTIONALLY BLANK.

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Ave. all labs 7-24-87 Water Gross Alpha 5 + 5 5.2 + 0.4 4.7 + 1.4 Gross Beta 5 + 5 7.8 + 1.6 6.1 + 1.8 8-7-87 Water Iodine-131 48 + 6 45.3 + 3.1 47.2 + 4.9 8-28-87 Air filter* Gross Alpha 10 + 5 11.4 + 0.7 10.5 + 2.2 Gross Beta 30+ 5 31.0 + 2.0 30.3 + 4.3 Cesium-137 10+ 5 8.7 + 1.7 10.7 + 1.9 Strontium-90 10+ 5 10.2 + 0.2 9.6 + 2'

>'~Results are pCi/filter

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EPA INTERCOMPARISON RESULTS OCTOBER 198 THROUGH DECEMBER 198 All values in Ci liter Ave. all labs Nuclide EPA Value RMF Value Partici atin 10-9-87 Water Chromium-51 70i5 66.4 i 3.5 68.8 + 8.9 Cobalt-60 15 2 5 16.8 i 1.8 16.4 2 2.0 Zinc-65 46 i 5 45.6 i 3.6 47 ' + 4.7 Cesium-134 25i5 23.0 i 0.4 24.4 i 2.5 Cesium-137 51 2 5 51.3 i 0.7 51.8 2 3.0 11-21-87 Blind Gross Alpha 28 i 7 25.0 2 2.5 28.0 + 7.5 Gross Beta 72 i 5 68.8 2 1.6 75.2 + 9.3 Cobalt-60 16 i 5 16.1 i 1.1 16.6 t 2.2 Cesium-134. 16 i 5 15.7 + 0.5 15.7 + 2.6 Strontium-89 16 2 5 19.2 i 1.0 15,2 i 3.6 Strontium-90 10.0 i 1.5 11.0 t 0.2 9.9 + 1.3 Radium-226 4.8 2 0.7 4.54 2 0.23 4.7 + 0.7 12-4-87 Water Iodine-131 26 i 6 27.1 i 1.1 26.6 + 3.1

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EML UALITY ASSURANCE PROGRAM INTERCOMPARISON RESULTS DECEMBER 198 Sample Reported Units Nuclide Value EML Value Air Filter pCi/filter Beryllium-7 920 i 60 896.

Air Filter pCi/filter Strontium-89 4513 38.3 Air Filter pCi/filter Strontium-90 47 2 3 36.9 Air Filter pCi/filter Zirconium-95 180 i 10 188 Air Filter Air Filter pCi/filter Antimony-125 820 i 10 963 pCi/filter Cesium-137 304 + 6 290 Soil pCi/kg Strontium-90 12300 i 600 12.7 Soil Soil pCi/kg Strontium-90 , 11800 i 600 12.7 pCi/kg Cesium-137 190 2 40 0.211 Soil pCi/kg Cesium-137 200 + 50 0.211 Soil

'i pCi/kg pCi/kg Radium-226 Radium-226 720 2 10 780 i 20 0.636 0.636 Tissue pCi/kg Strontium-90 11400 i 700 12.9 Tissue pCi/kg Cesium-137 190 i 40 0.190 Tissue pCi/kg Cesium-137 ,190 i 40 0.190 Vegetation Vegetation pCi/kg Cesium-137 1900 i 100 1.82 pCi/kg Cesium-137 2100 X 100 1.82 Water pCi/ml Tritium 17.1 0.5 19.1 Water pCi/ml Manganese-54. 2.26 2 0.02 2.28 Water pCi/ml Cobalt-57 0.14 i 0.01 0.142 Water pCi/ml Cobalt-60 2.27 i 0.02 2.27 Water pCi/ml Strontium-90 0 '46 i 0.016 0.252 Water pCi/ml Strontium-90 0.236 i 0.014 0.252 Water pCi/ml Cesium-137 2 '8 i 0.02 2.28

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Certificate Agreement Tritium 1.16 E-4 1 27

~ E-4 0.91 0.75 - 1.33 Strontium-89 1.50 E-4 1 74

~ E-4 0.86 0.75 - 1.33 Strontium-90 2.15 E-5 1.57 E-5 1.37 0.75 - 1.33 The USNRC sample was supplied in a plastic bottle. Tritium will undergo isotope exchange in plastics, 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 samples 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.

f

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Ge(Li)

RHFMa1m 0.0720 0.0771 1.071 0.0720 0.0783 1.088 0.0720 0.0773 1.074 The vendor supplied one face-loaded charcoal canister for analysis. The results are consistent and in excellent agreement with spiked canister.

The RMF calibrates the Ge(Li) detectors by averaging three spiked canisters. The canisters are spiked with Xodine-131 standards, traceable to the National Bureau of Standards, over the first 10% of the charcoal.

-174-

In accordance with PVNGS Technical Specification 3/4.12.2, 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 ft~ 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 the table, the radial direction and mileage from Unit 2 containment are presented for each location. The radial direction is one of the'6 different compass points. The mileage was estimated from the map position of each location.

2.0 2.1 Table 1 presents the location of the nearest resident to the PVNGS in each of the 16 meteorological sectors. There were two changes in the nearest resident status noted in the 1987 census. These changes were in the east northeast and the south sectors.

2.2 Milk goats were located within the five mile radius of Unit 2 during the 1986 Land Use Census. During the 1987 Land Use Census, three milk goats were located in the East Northeast Sector 4.75 miles from PVNGS Unit 2 Containment.

Milk was obtained for radiological analysis in February, 1987. Since the dose commitment was LLD, it was not 20% 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 No gardens greater than 500 square feet producing broad leaf vegetation were found during the 1987 Land Use Census.

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

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TABLE 1 LAND USE CENSUS December 1987 Miles to Miles to Nearest Milk Animal Meteorological Nearest N 1.50 NNE 1.50 NE 2.00 ENE 2.70 (NEW) 4.75 2.25 ESE 3.75 SE 4.00 SSE 4.50 2.80 (NEW)

SSW SW 2.90 WSW 1.75 4.00 NNW 2.50

~~None within a five mile radius of the midline of containment (reactor) building.

PVNGS'nit 2

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