ML17320B029

Radiological Environ Monitoring Annual Rept,1983.

ML17320B029
Person / Time
Site:	Cook
Issue date:	12/31/1983
From:	EBERLINE INSTRUMENT CORP.
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ML17320B028	List: ML17320B027 ML17320B029
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NUDOCS 8405080204
Download: ML17320B029 (58)

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TABLE OF CONTENTS

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SECTION 1 Preface SECTION 2 Sampling Program SECTION 3 Analysis Program 14 SECTION 4 Results and Discussion SECTION 5 Data Tables 31 Introduction to Data Tables 32 Airborne I-131 and Particulate Filters 33 Radionuclides in ~H.lk Samples 39 Gamma Emitters in Precipitation Samples 43 Gamma Emitters in Lake Water Samples 44 Radionuclides in Well Water Samples 45 Radionuclides in Sediment Samples,. 46 Radionuclides in Fish Samples 46 Radionuclides in Food Crops 46 Gamma Radiation (TLD) 47 List of Missed Samples 48 SECTION 6 - Quality Assurance Data 49

ABSTRACT This report presents the data obtained from the analyses of environmental samples collected for the American Electric Power Service Corporation Donald C. Cook Nuclear Station Environmental Radiological Surveillance Program for the period 01 January 1983 through 31 December 1983.

The activity present above the detection limits in the routinely collected sample media was obser'ved to be of natural A

and atomospheric origin. In no case did radioactivity from the Cook Nuclear Plant exceed the design objectives of the Cook Radiological Environmental Technical specifications.

INTRODUCTION The Donald C. Cook Nuclear Station of American Electric Power Service Corporation consists of two >lestinghouse PNR units (Unit 1 and Unit 2). Each unit consists of a presurized water reactor (PllR) which generates about 3250 megawatts (K0) of heat to generate about 1100 ~iW of electricity. The station is located in Benton Harbor, Michigan.

The D.C. Cook Plant utilizes a pressurized water reactor with a radwaste hold-up and treatment system that has been designed to keep radioactive releases to" as low as is practible levels. However, small quantities of noble gases and radioiodine may be released to the surrounding environment. The quantities of radionuclides released to the environment are expected to be minisule and insignificant as a source of potential exposure to flora and fauna in the area. However, direct radiation exposure to man and radionuclide accumulations in various components of food chains to man are carefully monitored.

The environmental radiological monitoring program is intended to serve the following purposes:

a) To yield average values of radiation levels and concentrations of radioactive material in various media of the environment.

b) To identify sample locations and/or types of samples that deviate from the averages.

c) To document seasonal variations that could be erroneously interpreted when the power station is operating.

d) To indicate the range of values that should be considered "background" for various types of samples.

The basic approach for the Donald C. Cook Nuclear Plant is to con-trol the release of radioactive material at levels far below that which would be expected to cause detrimental impact on the environment. The environmental radioactivity surveillance program will be closely coord-inated with conditions of plant operation and subject to periodic review.

Levels of environmental radioactivity are subject to change for reasons in no way related to the operation of the D.C. Cook Nuclear Plant. Therefore, the radioactivity surveillance program has been de-signed to include reference or "background" stations as well as "indicator" stations. The program is summarized in Table I.

This report contains a compilation of the results of analyses of various types of samples collected during the period January 1983 through December 1983.

SECTION 2 SAPLING PROGRAM

All samples are collected by Eberline personnel and shipped to Eberline, Albuquerque Laboratory in New Mexico. The sample collection procedures remained the same as those detailed in the semi-annual report for the period 01 January through 30 June ]973.

Upon receipt of the samples, the Laboratory staff enters the samples in a log book identifying them as to sample type, collec-tion date, and sample code number of location, then v'erifies the specific analyses to be performed on each sample. The samples are then stored, awaiting analysis, on shelves expressly for this pur-pose to assure accountabili.ty through the Laboratory processes.

Table 1 lists the sample analysis program sampIe type, frequency, and the type of analysis required.

Table 2 lists the LLD's (Lower Limits of Detection) for the analy-tical program. These LLD's are based on the Regulatory Guide 4.8. For analyses not listed in Regulatory Guide 4.8, Federal EPA, former require- ~

ments for similar programs or other appropriate guides are used. The LLD's are calculated at the 3a (99% confidence) level.

The Guide specifically states that the LLD's are priori, not a posteriori (after the fa'ct) limit for a particular measurement. When however, RG 4.8 or other LLD's have not been achieved, a footnote giving a brief explanation has been inserted.

Maps of sampling locations are shown on pages ll- 13. Figure I gives the air sampling locations, Figure II shows other .sampling locations and TLD monitoring locations.

TABLE 1 ENVIRONHENTAL MONITORING PROGRAH DONALD C. COOK NUCLEAR PLANT Sample No. Station Collection Analysis Type T Ind. Bk Fre uenc Fre uenc Anal sis Remarks Air Particulate 6 4 Meekly Meekly Gross Beta 6 4 Honthly Gamma Isotopic (a)

Composite of weekly collections Airborne 1-131 Meekly Meekly Gamma Isotopic Precipitation Monthly Honthly Gamma Isotopic By indicator and Composite, 2 background samples.

Samples Lake Mater Monthly Honthly Gamma Isotopic By indicator and Composite, 2 background samples.

Samples Well Water Every 18 wks. Every 18 wks. Gaaxna Isotopic Tritium Fish Semi-annual Semi-annual Gamma Isotopic Edible portion only.

TABLE l (Cont'd)

L'HVIRONHENTAL MONITORING PROGRAM DONALD C. COOK NUCLPAR PLANT Sample Ho ~ Stations Collection Analysis Type

~TJ>e Ind. Bk

~FeP. uhaCy Analysis Rclnn 1 ks Milk 3 2 Monthly Monthly Gamma Isotopic I-131 Sediment 2 2 Semi-annual Semi-annual Gamma Isotopic TLD (c) (c) Quarterly quarterly Total Dose Food Crops 1 1 Annualy ~

Annualy Gamma Isotopic (a) January-March the monthly composites of indicator and Background were analyzed for gamma emmitters as as 2 samples. Beginning April 1983 composites of individual stations were analyzed for gamma emitters.

(b) Deleted from the program beginning April 1983.

(c) Back up TLD badge for each location was placed and analyzed during 1983.

Table 2 LOMER LIMITS OF DETECTIOV (LLD's)

LLD Sample C'lass Analvs's 'Jns Air Particulates Gross Beta 0.01 pci/ms Gamma Isotopic 0.01 pCi/ms Airborne Iodine I-131 0.1 pci/m3 I-131 0.5 pCi./m3 Gamma Isotopic 10 pCi./1 Milk'ell Sr-89 5 pCi/1 Sr-90 1 pCi/1 Mater LS Tritium 1000 pCi./1 Gamma Isotopic 10 pCi/1 Precipitation Gamma Isotopic 10 pCi/1 Lake Mater Garhma Isotopic 10 pCi/1 Sediment Gamma Isotopic 0. 15 pCi/g dry Fish Gamma Isotopic 0. 13 pCi/g wet Food Crops Gamma Isotopic 0.06 pCi/g wet Background Gamma Dose mR/week Radiation(TLD) 10

TRUE PLANT NORTH NORTH METEOROLOGICAL T R Wl PROPERTY LINE TO7 ROADS T2 L3 W2 +o ~

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~E-W SHORE LINE PLANT Q 765 KV YARD CHESAPEAKE

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W7 T 6 2,000 FOOT RADIUS INTERSTATE 94 SCALE FIGURE I 0 l,000 2,000 3,000 4,000 FEET LOCATIONS OF INDICATOR AIR SAMPLING STATIONS A 'ir, Precipitation T TLO Station W Well Water L Lake Water (taken at shoreline)

A - A1r, Prec1p1tat1on, TLD Stat1ons L - Lake Ater Sample Stat1ons H - HIlk Sample Stat1ons 20 HILES ~ 1196 Mate Col 194 BENTON HARBOR L ST. JOSEPH M51 H140 Stevensv11 e 33 D. C. COON PLANT Eau la1re Br1dgma Berr1en Spr1ngs M51 PM New Buffalo'94 NIles MICHIGAN IEKViA HICNIGAN CITY New Carl1sle US20 M

US20 AIITII BBID Scale of Hlles 10 20 PICURE OFF SITE II LOCATIONS OF SAMPLING STATIONS 12

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2. Stevensvil le Sub Station.

3. Washington Avenue midway between Brentwood Drive and Kingman Drive.

4. Washington Avenue and Linco Road. FIGURE III

5. Cleveland Avenue and Shawnee Road. TLD MONITOR LOCATIONS 6: Holden'Road and Snow Road. LOCATED ON THE FIVE MILE RADIUS FROM THE PLANT

?. Bridgman Sub Station.

'8. California Road between Browntown and Snow Roads.

9. Ruggles Road between Hinchman and Lemon Creek Roads.

10. At intersection of Hildebrant Road and Red Arrow Highway.

13

SECTION 3 ANALYSES PROGRAM 14

ANALYTICAL PROCEDURES Samples received at the laboratory are analyzed for the various rad'o-active components by standard rad'ochemcal methods. These methods are equal to, and in most cases, identical with, those of the U.S.D.O.E.1 or those of the Federal E.P.A.2 Br'ef descript"'ons of analytical procedures are available in the Lab-oratory Procedures manual available at the Cook Nuclear Plant and the radioanalytical contractor's laboratory.

AIR PARTICULATE FILTERS Gross Beta Exposed air particulate filters are counted in low back-ground Geiger or proportional flow'eta counters using anti-conc"'dence background suppress'on after the short-lived naturally occurring radon and thoron daughters have decayed. Filters are counted long enough to ensure that the required sensitivity (LLD) is met.

Gamma Isotopic ~!onthly composites of air particulate filters grouped by 'nd'cator and background stations into two samples are counted in high resolution (GeLi) gamma soectrometers for periods of time 'ong enough to ensure that the required program sensitivity (LLD) is met.

1HASL Procedures Manual, edited by John H. Harley, Health and Safety Laboratory, US Atomic Energy Commission, 1972 edition, revised annually.

'Aational Environ..ental Research Center, Environmental Protection Agency; Handbook of Radiochemical Analyticamethods. Program Element IHA 325. Office of Research and Development, Las Vegas, Nevada 89114.

CHARCOAL CARTRIDGE SAMPLES IODINE I-131 The 'od'ne is extracted from the charcoal, chemica>>y separated us'ng "'od'ne carr'er, precipitated as Ag I, and counted n a low level beta counter. The chemical recovery of iodine is measu ed grav'met "'c-ally.

VATES SA~~LES (Includes Lake, Veil, Precipitation)

Gare~a..Isotoo"'c A measured aliquot of the sample is'evaporated to a small contro'led volume and counted in a standard geometry in a h"gh reso'ution (GeLi). gamma spectrometer long enough to ensure meeting the sensit'v ty.-requiiements of the program. See also the Introduct" o..

to Data Tables.

I Trit'm T t'um as tritiated water is analyzed by liquid sc'nt. 11-aton count"..g after distillation. If high sensitiv'ty is not requ"red (ie. LLD "500 pCi/1) the sample is distilled, mixed with the aporoo-r'ate count"ng phosphors and counted with no further":treatment. If higher sensitivity 's required (ie. <"300 pCi/1) the samp'e 's 'so-topically enr'ched in tritium concentration orior to liquid scintill-at'on count'ng. Isotopic enrichment is done by the class'cal methoc of Ostlund which involves alkaline electrolysis of a purif'ed al cuot of samo' under contro" led condit'ons of temoerature and electrode current density.

16

vTT ~( SAlfPL~S I-131 Measured amounts of carrier iodide are added to a known volume of mil!c and the 'oc"ne extracted on anion exchange resin. The iodine is recovered and pur fied by classical iodine chemistry methocs wÃich are .sim lar to those given in former Regulatory Guide 4.3. The yield or recovery of iod'ne is measured gravimetrically and the precipitated sample is mounted and counted in a low level beta detector for a long enough period to ensure that the required LLD is met.

Gamma Isotonic A measured aliquot of sample is. evaporated and oven-dr'ed to a standard volume and counted in a fixed geometry 'n a h gh resolution (GeL') gamma spectrometer for a long enough period to ensure that the required LLDs are reached (see also 'Introduction to Data Tables) ~

Strontium-89 and Strontium-90 - Stable strontium carrier is added to an aliquot of the sample which is then dried and ashed at hig'n tem-perature {>700 c). The ash is dissolved and the solution treated from this point on in the same manner as are air particulate samples.

4 ORGA'NIC SAMPLES (Aquat"'c Organisms, Food Crops, Fish)

Gamma sotooic A measured aliquot of sample is oven-dr.'ed cr ashed as appropriate, p'aced in a controlled geometry and counted in a h"'gh resolution (GeLi) gamma spectrometer for a period long enough to en-sure that the LLDs of the proc,ram will be set (see also Introduction to Date Tables).

17

SEDINEÃZ SANPLES Gamma Isoto ic The sample is oven-dried to facilitate handling and then sieved to removed pieces of stone and/or other large pieces of material. An appropriate sized, weighed aliquot of the sample is then transferred into a standard geometry container and counted for a period long enough to ensure that the LLDs of the program will be met (See also Introduction to Data Tables.)

THEBNOLUNINISCEHT DOSINETERS Environmental radiation doses are measured using badges comprizing five chips sealed in plastic protective holders having a density of 50 mg/cm2. The TLD chips are 1/8" x 1/32 LiF (thallium activated) known commercially as Harshaw-100. The chips are all selected to pro-vide uniform response to within five percent of the mean for the batch.

Prior to installation, the chips are annealed by a standard cycle of 60 minutes at 400 c and immediate cooling to ambient temperature by plac-ing the tray containing the annealed chips on an aluminum block 12"x12"x After exposure the chips are read on an Eberline Instrument Corp-oration Nodel TLR-6 reader. The system employs a preheat cycle which removes low temperature peaks and integrates and digitizes only the light output in a selected temperature range.

The dose is calculated from the average light output for the five

'chips and the statistical uncertainty is the standard deviation of the five readings. Control badges are used to detect any unusual exposure to the badge which might occur during shipment.

18

QUALX"Y ASSURANCE PROGRA~

Quaty o product or, servce has always been a primary key to "n-crease n sa's customer satisfaction, and prof"t. The management of Eber'"'ne Instr .ent Corporation recogn'zes the ever increas'ng de...and P

fo higher oua" ty and reliability for services related to protect"on o" wor'.cers and the environment. Xt is our firm belief that in order to

~udge the worth of a support service, one must know the ph'losophy behind

"'t. 'ber>>ne w.'"" provide only those services for wh'ch t is qualified anc these will oe orovided 'n a manner that is reliable, with a quality assurance program that ma'nta"'ns a hgh degree of client confidence. This .quality assurance program has been prepaxed cons"'stent with the following spec"'f'ca-t'ons per the Techn"ca" and,Quality Assurance Requirements for Special Purposes.

-EST-345.2, American National Standard Institute NRC Branch Techn cal Position of November 1979 FRC"Regulatory Gu.'de 4,15, Revision 1 of February 1979.

3. Tntercompaxison Program Results of Eberline Albuquerque Laboratory's participation in the USEPA's Crosscheck Program are included in the monthly and annual reports prov'ded to the client. Other intercomparisons in which we routinely participate nclude:

Environmental Protection Agency Environmental Measurement Lab DOE Quality Assessment Program Battelle Northwest Laboratories IAEA Analytical Quality Contxol Service US Vat'onal Bureau of Standards Each of, the laboratory managers is responsible for preparing spikes and blanks to be run routinely. Every tenth samples is a spike, a blank, or a split sample.

Regualar QC reports are prepared by a laboratory manager on a monthly 19

schedule and forwarded to each client. Each rep'ort routinely includes:

results from EIC interlaboratory comparison, results from EPA Crosscheck program, and results from other intercomparison programs.

Results- are rev'ewed by the laboratory manager. If a problem "'s .'n-dicated by the data, the nature of the problem is investigated and correct've steps taken immediately. A copy of each report is also provided to the Quality Assurance Yunager of the Nuclear Services Division.

C. Quality Assurance Plan The Quality Assurance Program follows the requirments of Company and Division Manuals. The discussion below outlines Quality Assurance Programs as conducted in the laboratory and as required in our QA Nanual.

Procedure Approval Each procedure goes through a vigorous evaluation and review process before it is incorporated into the 'EIC Procedures 'Ymnual. Established pro-cedures of. the. Env'ironmexital.Protects'on. Agency. (FPA)-:or the Environmental Measurements Laboratory of, Che US Department of Energy'E5K) are used unless thorough testing has demonstrated. that analternate procedure is equal to or better than the EPA'r ENL procedure.'. Uniform procedures are used at both laboratories to the fullest extent'ossible, except when deviations are necessary to meet the specific requirements of the client. The manager of each laboratory and the quality assurance manager review and approve signif-icant procedural changes before they are implemented.

E ui ment Calibiation and Maintenance Equipment used for quhlitative or quantitative measurements is care-fu'ly calibrated and'maintained with records of each calibration or main-tenance action kept in appropriate logbooks. To the extent possible, certified standards are used for all primary calibrations. The following standards are used for the application indicated:

20

~measurement Calibration Standard 137 Gross Beta Solution, of Standard Cs certified by NBS or Amersham Searle 3

Tritium Solution standard of H certified by NBS I

Gamma Solution standards of various gamma emitters Spectrometry certified by NBS or Amersham Searle. Standards are used to calibrate each counting geometry used.

90 certified Strontium-89 Solution standards of Sr by Amersham and 90, Searle or NBS 239 Gross Alpha Solution standards of Pu certified by NBS or Amersham Searle.

137 with NBS using Radiation Dose Cs gamma source cross-referenced R-meters. Ra is used for some special application.

hhen suitable standards are not available for a specific gamma emitter, quantitative gamma isotopic analysis'is based on an energy calibration of the gamma spectrometer and the gamma energy and abundance information provided in Table of Xsotopes, Sixth Mition by Ledrer, Hollander, and Perlman.

The results of the Quality Control Programs are .summarized in Section 6.

21

SECTION 4 RESULTS AND DISCUSSION 22

Table 3 Iragc 1 of' Name of Facility: Donald C. Cook Nuclear Station Docket Number: 50-3.15 and 50-315 Location of Facility: Berrien Count Hichi an State Reporting Period: Januar December 1983 Hedium or Pathr"ay Type and Lover Li.mit All Indicator Location with Control Number of Sampled Total Number of Locatiol1s Hi~hest Hean Locations Norr-routine (Unit of Heasu remen t) of Analyses Performed Detection (LLD)

Hean'ame 1

Hean (Range)

Heanl (Rani')

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Air Particulates Gross B 526 0.01 0.03 (284/317) On Site 5 & 0. 03 0. 03 (200/209) 0 (pCi/m3) 0.01-0.09 6 0. 01-0. 07 0.01-0.08 Ce-144 36 0.01 ALL LLD Not Applicable ALI. LI,D 0 Zr-95 36 0.01 ALL LLD Not Applicable ALL LLD 0 Nb-95 36 0. Ol ~ ALL LLD Not Applicable ALI. LLD 0 Ce-141 36 0.01 ALI. LLD Not Applicable ALL LLD 0 RU-103 36 0.01 ALL rLD Not Applicable All LLD 0 Other Gamnra 36 0.01 ALL I.LD Not Applicable ALL LLD 0 Sr-89 2. - 0.002 ALL LLD Not Applicable ALL LLD 0 Sr-90 2 0.001 ALL LLD Not Applicable ALL 'LI.D 0 Airborne Iodine I-131 528 0. Ol ALL LLD Not Applicable ALL LLD 0 (p Ci./rn3)

Mell Mater Tritium 28 1000 2930 (10/'5) On Site 4 4730 (3/4) 700 (1/12)

(nCi/1) 600/8400 2600-8400 (a)

Gamma Spec. 28 10 AI.L LLD Not Applicable AI.I, LLD lqrfcarr arrd range based on detectable measurcmcnts only Fractions indicated in parenthesc:s.

(a) Range: is not reported as only one detectable mcasuremcnt vas rvai3able.

Table 3 (Continued) Page 2 of 3 Facility: Donald C. Cook Nuclear Station Medium or Pathway Type and Lower Limit All Indicator Location. with Control Number of Sampled Total Number of Locations Locations Non-routine (Unit of of Analyses Detection Mean1 Mean Meanl Reported Measurement) Performed (LLD) (Ran e) Name. ~(Ran e) ~(Ran e) Measurements Milk 1-131 109 0.5 ALL LLD Not Applicable ALL LLD 0 (pCi/1)

S1-89 20 ALL LLD Not Applicable ALL LLD 0 Sr-90 20 2.0 (12/12) Stevensville 2.5 4.0 (12/12) 0 1/5 (4/4) 1-5 1-7 Gamma Spec. 109 10 ALL LLD Not Applicable ALL LLD 0 Precipitation Gamma Spec. 8 10 ALL LI.D Not Applicable ALL LLD 0 (pCi/1)

Lake Hater Gamma Spec. 8 10 ALL I.LD Not Applicable ALL LLD 0 (pCi/1) 1 Mean and range based on dtectable measurements only. Franctions indicated in parentheses.

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0 Table 3 (Continued) Page 3 of 3 1'acility: Donald C. Cook Nuclear Station hfedium or Pathway Type and Lower Limit All Xndicato'r Location with Control Number of Sampled Total Number of Locations I(~i best Hean Locations Non-routine (Unit of of Analyses Detection Nean '-

Hean Heanl Reported Measurement) Performed (LLD) Name ~(Ran e) . (R~an e) 1'feasll'Cell)eats Sediment Gamma Spec. 8 0.05 ALL LLD Not Applicable ALL LLD 0 (pci/g dry)

Food Crops Gamma Spec. 2 0.06 ALL LLD Not Applicable ALL LLD 0 (pCi/g wet)

Fish Gamma Spec. 8 0. 13 ALL LLD Not Applicable ALL LLD 0 (pCi/g wet)f Background Gamma Dose 92 0.1 1. 1 (36/36) On Site 1 1.2 (4/4) 1.2 (56/56) 0 Radiation (TLD) 0.9+1.5 ~ 1.0-1.5 0.9-1.6 (mR/week) 1 Mean and range based on detectable measurements only. Fractions indicated in parentheses.

Results of all the analyses for January through December 1983 are presented in full in section 5, Data Tables pages 33 through 48.

Table 3 summarizes the range and average concentrations for meas- .

urements at the indicator and .control locations with the highest annual mean.

Specific finding for the various environmental media are discussed below.

AIR PARTICULATE SAMPLES Atmospheric particulate matter at a fi.eld location is accumulated for a one-week on a glass fiber filter using a low-volume air sampler at a collection rate of one'cubic foot per!minute. This particulate matter contained on the filter is counted for beta activity in a low background counting system after the short-lived naturally-occurring radon and thoron daughters have decayed.

The average gross beta concentration for the yea" for all indicator tations was.0.03 pCi/m , and wars 0.03:pCijm.3 for. the background station .

Data for anayses of individual filters are given on pages 33 through 36 l

in Section 5.

The following table summarizes the average gross beta concentrations for both indicator and background stations for each year from 1973 through 1983. The preoperational data were collected in 1973 and 1974; operational data were collected from 1975 through the present.

TABLE 3 Indicator ~Back round 3

pCi/m Preoperational 1973 0.04 0.04 1974 0. 16 0. 16 Operational 1975 0. 08 0. 09 1976 0.09 0.08 1977 0.22 0. 22 26

Indicator ~Back ccuud Ci/m3 0 erational 1978 0.12 0. 11 1979 0.04 0.04 1980 0.04 0.04 1981 0. 12 0. 11 1982 0.03 0.03 1983 0.03 0.03 The elevated levels of gross beta activity at both indicator and background locations during preoperational and operational phases from 1974 through 1982 were mainly the result of nuclear test explosions in the atmosphere by the people's republic of China. Such tests took place on 27 June 1973, 17 June 1974, 23 January 1976, 26 September 1976, 17 November 1976, 17 September 1977, 13 birch 1978, 14 December 1978 and October 1980.

The data indicate that there is significantly no difference between the levels of gross. beta activity measured at the indicator aud back" ground locations for the operational and preoperarional phases of the progran..l The activity detected are not attributable to the operation of the Cook Plant.

Airborne I-131 concentration was. less than 0.1 pCilm3 for all samples received.

The gamma spectrometry data for monthly composites of air particulate files begins on page 37 . Be-7, a naturally occurring nuclide formed by tne cosmic ray interaction with nuclei in the upper atmosphere, was detected in the composites. These were generally in the range to be expected from measurement of this nuclide, in this medium. No other gamma emitters were detected.

1 See Annual Environmental Ãonitoring Reports for D.C.Cook Plant from previous years for details.

27

Quarterly composites of air particulate filters were analyzed for Sr-89 and Sr-90. Sr-89 concentrations were below the detection limit of 0.002 pCi/m3, and Sr-90 were also below the detection limit of 0.001 pCi/m3 for both indica-tor and background locations. Data are presented on page 37. The Sr-89 and Sr-90 analyses were deleted from the program beginning second quarter, 1983.

MILK SAMPLES Milk samples were collected monthly and were analyzed for I-131, Sr-89, Sr- 90 and gamma emitters. Sr-89 and Sr-90 analyses were deleted from the program beginning April 1983.

Sr-89 concentrations measured below the detection limit of 5 pCi/l in all samples collected during the year. Sr-90 concentrations continued to display considerable variation, which is typical for thip type of sample. This nu-elide is attributable to worldwide fallout from both recent and older nuclear thes programs. Data are given on page 39 I-131 concentrations were below the detection limi.ts of the program.

Data are presented on pages 39 and 41.

Gamma emitters other than those which occur in nature were not detected in all smaples at a measurement sensitivity of 10 pCi/1. Data age given on pages 40 and 42.

PRECIPITATION SAMPLES Gamma isotopic analyses of monthly precipitation samples from indicator and background locations indicate the presence of no gamma emitters in concen-trations exceeding 10 pCi/l (<3000 pCi/m 2 ). This;sample type was deleted from the program beginning May 1983. Data are presented on page 43

'ELL WATER SAMPLES Well water is collected from seven locations at 18 week intervals during the year and analyzed for tritium and gamma emitters.

28

Concentrations of tritium in the range of 600 to 8400 pCi/1 were detected in samples from all the indicator stations during the year. Some of the samples contained small amounts of hydrocarbons and these may have inter-fered with the measurement and contributed to the activity to some extent.

It is possible that the tritium found in these samples is a result of plant operations. Gamma emitters were below the detection limit in all samples analyzed. Data are presented on page 45.

LAKE MATER S34%'LES Samples of water from Lake Michigan are composited by indicator and background locations and analyzed for gamma emitters on a monthly basis.

This sample type was deleted from the program beginning May 1983.

The gamma emitters in the monthly composites were measured to be less than the detection limit of 10 pCi/1 per nuclide for all samples. Data are given on page 44.

SEDIMENT SAMPLES Sediment samples were collected twice during the year from areas north and south of the plant, at the on-site and off-site locations. The sample were analyzed for gamma emitters.

The gamma emitters were below the detection limit of 0.15 pCi/g (dry) 1 in all samples. Data are given on page 46.

FISH S&fPLES Fish samples collected from areas north and south of the plant, both on-site and off-site locations, were analyzed for gamma emitters.

For.all samples, gamma emitters were below the detection limit of 0.13 pCi/g (wet). Data are given on page 46.

29

FOOD'CROP SA"PLES Broad leaf vegetables were collected during the fall harvest period from on-site and off-site locations and were analyzed for gamma emitters.

They were found to be below the detection limit of 0.06 pCi/g (wet) at both on-site and off-site locations. Data are given on page 46.

GAMMA DOSE Gamma radiation dose was measured with Thermoluminiscent Dosimeters (TLDs) on a quarterly schedule. A total of.23 locations (9 indicator and 14 background) were monitored during the year.

Throughout the year, there was no statistically significant difference in dose rates between indicator and background locations, nor do they differ significantly from dose rates measured in precious years. Data are presented on page 4/.

30

SECTION 5 DATA TABLES 31

INTRODUCTION TO THE. DATA TABLES The following information wiX1 be helpful in understanding the presentation of the data in the tables in this section.

Wet Weight a reporting unit used with organic tissue samples such as vegetation and animal samples in which the amount of sample is taken to be the weight as received from the field with no moisture removed.

Dry Weight a reporting unit used for soil and sediment in which the amount of sample is taken to be the weight of the sample after removal of moisture by drying in an oven at about 110 for about 15 hours.

pCi/ms a reporting unit used with air particulate and radioiodine data which refers to the radioactivity content expressed in picocuries of the volume of air expressed in cubic meters passed through the filter and/or the charcoal trap. Note that the volumes are not corrected to standard conditions.

Gamma Emitters samples were analyzed by high resolution (GeLi) gamma or spectrometry. The resulting spectrum is analyzed by a Gamma Isotopic computer program which scans from about 50 to 2000 kev and lists the energy peak of any nuclides present in concentra-tions exceeding, the sepsitivity limits set for that particular experiment.

NA, NS, NR used in place of a concentration when a sample was not available (NS), or when a sample was not analyzed for some specific measurement (NA), or when an analysis is not required (NR).

Error Terms figures following "+" are error. terms based on counting uncertainties at the 2a (95% confidence) level. Values pre-ceded by the "<" symbol were below the stated concentration at the 3a (99% confidence) level.

Exponents Exponents necessary to prevent data tables from being cumbersome are handled in the conventional manner of including them in the column headings.

Sensitivity In general, all analyses meet the sensitivity requirements of the program as given in Table 2. For the few samples that do not (because of inadequate sample quantities, analytical interferences, etc.) the sensitivity actually obtained in 'the analysis is given.

Comment when all analyses of a particular type during the period resulted in concentrations below the sensitivity limits, a statement is made on the appropriate table rather than presenting a whole page of "<" data. If all but one or two data points are below the sensitivity limits, the previously mentioned convention is followed and the finite data are given as footnotes.

32

DONALD C. COOK AIRBORNE IODINE-131* and GROSS BETA in AIR PARTICULATE FILTERS (Meekly Collections)

Gross Beta 10 ~ Ci/ms ON-SITE 1 ON-SITE 2 3'N-SITE ON-SITE 4 ON-SITE Collection Volume Volume Volume Volume Volume Date ~m~ ~Gra ss ~ms Gross ~m~ Gross G ~ms Gross 8 Gross 01/04/83 285 <1 400 1+1 250 5+1 325 3+1 215 4+2 01/11/83 270 <1 390 1+1 250 4+1 320 3+1 210 4+1 01/18/83 295 <1 335 <1 250 1+1 315 2+1 210 4+1 01/25/83 310 1+1 295 250 2+1 315 2+1 265 3+1 02/01/83 445 2+1 250 1+1 250 1+1 365 2+1" 580 1+1

- ~

02/08/83 435 1+1 200 5+1 250 4+] 370 6+1 485 2+1 02/15'/83 435 <1 275 1+1 250 4+1 430 3+1 400 3+1 02/22/83 430 1+1 290 1+1 215 3+1 395 3+1 395 3+1 03/01/83 435 1+1 285 2+1 210 2+1 365 2+1 400 3+1 03/08/83 445 1+1 315 4+1 215 4+1 370 5+1 395 4+1 03/15/83 440 1+1 395 2+1 210 3+1 365 3+1 395 4+1 03/22/83 300 <1 310 <1 265 3+1 300 1+1 300 3+1 03/29/83 305 1+1 305 1+1 300 3+1 295 2+1 280 2+1 04/05/83 340 <1 325 <1 (a) (a) 280 1+1 325 2+1 04/15/83 340 1+1 270 2il 600 3+1 215 2+1 315 1+1 04/19/83 320 1+1 300 2+1 300 3+] 230 3+1 . 320 2+1 04/26/83 340 1+1 330 2+1 300 3+1 235 3+1 315 4+1 05/03/83 380 1+1 360 1+1 295 2+1 230 2+1 330 3+1 05/10/83 365 1+1 395 1+1 295 2+1 265 3+1 325 2+1 05/17/83 390 1+1 410 2+1 295 3+1 330 3+] 375 4+1 05/24/83 430 1+1 410 2+1 290 4+1: 320 3+1 475 3+1 05/31/83 445 1+1 425 1+1 315 2+1 320 2+1 480 2+1 06/07/83 435 1+1 455 <l 320 2+1 320 )+I 475 1+1 06/14/83 405 1+1 435 1+1 345 3+1 325 4+1 450 4+1 06/21/83 360 1+1 375 1+1 325 2+1 310 2+1 400 ~ 2+1 06/28/83 350 (1 385 (1 325 2+1 335 3+1 400 3+1

• Iodine cartidges are sampled weekly. Concentrat'cns a e (O.l0 pCi/ms unless otherwise noted.

• • - No power data in pCi/sample (a) see list of missed samples.

DONALD C. COOK AIRBORNE IODINE-131* and GROSS BETA in AIR PARTICULATE FILTERS (h'eekly Collections)

Gross Beta 10 Ci/ma ON-SITE 1 ON-SITE 2 ON-SITE 3 ON-SITE 4 ON-SITE 5 Collection- Volume Volume Volume Volume Volume Date ~ms ~Gross ~ms Gross ~ms Gross ~ms Gross g Gross 8 07/05/83 335 1+1 345 2+1 330 2+1 330 2+1 390 . 2+1 07/12/83 335 1+1 375 <1 330 3+1 335 2+1 - 335 3+1 07/19/83 315 3+1 365 4+1 335 3+1 350 3+1 385 4+1 07/26/83 305 2+1 355 1+1 335 2+1 345 2+1 400 3+1 08/02/83 285 <1 255 <1 330, 4+1 355 3+1 395 3+1 08/09/83 285 270 335 3+1 355 3+1 405 3+ 1 295 <1 255 <1 330 2+1 335 3+1 405 1+1 08/16/83 08/23/83 275 <1 215 <1 325 3+1 350 3+1 235 3+1 08/30/83 285 1+1 210 <1 360 4+1 390 4+1 455 4+1 09/06/83 340 <1 185 340 3+1 380 <1 420 4+1 09/13/83 330 290 340 3+1 345 1+1 350 3+1 09/20/83 325 <1 290 1+1 345 3+1 335 1+1 330 3+1 09/27/83 315 1+1 280 340 1+1 330 1+1 330 3+1 10/04/83 310 1+1 270 1+1 345 6+1 350 4+1 330 7+1 10/11/83 520 2+1 515 2+1 550 2+1 585 2+1 370 2+1 10/18/83 520 3+1 545 1+1 505 510- 3+1 385 3+1 10/25/83 340 1+1 290 2+1 235 2+1 265 2+1 285 2+1 11/01/83 240 2+1 315 1+1 235 2+1 250 3+1 340 3+1 11/08/83 240 4+1 300 <1 235 3+1 250 4'+1 340 4+1 11/15/83 230 9+1 290 1+1 235 4+1 250 4+1 270 4+1 11/22/83 200 3+1 240 4+1 245 4+1 340 3+1 260 3+]

11/29/83 210 3+1 270 3+1 345 2+1 260 2+1 275 2+1 12/06/83 250 2+1 80 1+1 270 5+2 265 2+1 260 3+1 12/13/83 255'50 4+1 300(a) 5+1 275 3+1 250 5+1 260 5~1 12/20/83 3+1 80 1 270 4+1 265 4+1 260 3+1 12/27/83 245 6+1 455 2+1 270 5+1 275 4+1 265 5+1 01/03/84 290 3+I 415 2+1 265 5+I 265 4+1

'55 4+1

<Iodine cartridges are sampled weekly.

( 'stimated average volume

e

~

' ~

1983

~ ~

DONALD C. COOK

'IRBORNE IODINE-131+ and GROSS BETA in AIR PARTICULATE FILTERS (Weekly Collections)

Gross Beta 10 2 Ci/m~ Voltage ON-SITE 6 SOUTH BEND DOWAGIAC COLOMA Collection Volume Gross Collection Volume Gross Volume Gross Volume Gross Date (m~) 'eta Date (m~) Beta (m~) Beta (m~)

Gros'eta (ma) Beta 01/04/83 380 3+1 01/01/83 355 1+1 355 1+1 345 3+1 315 3+1 01/11/83 90 2+1 01/08/83 320 6+1 250 <1 345 <l 310 3+1 01/18/83 360 3+1 01/15/83 295 3+1 425 (a) 300 4+1 335 2+1 01/25/83 255 2+1 01/22/83 300 2+1 400 <1 300 2+1 340 02/01/83 255 5il 01/29/83 300 2+1 405 2+1 305 3+1 325 3+1 02/08/83 250 4+1 02/05/83 295 1+1 355 3+1 290 3+1 320 3+1 02/15/83 255 3+1 02/12/83 270 3+1 320 3+ 1 300 3+1 310 2+1 02/22/83 315 3+1 02/19/83 275 3+1 320 1+1 325 2+1 280 2+1 03/01/83 295 3+1 02/26/83 300 3+1 285 2+1 335 2+1 290 2+1 03/08/83 320 4+1 03/05/83 285 5+1 280 5+1 340 5+1 280 5+1 03/15/83 380 2+1 03/12/83 285 3+1 275 3i'1 345 3+1 280 2+1 03/22/83 280 3+1 03/19/83 290 4+1 265 1+1 360 1+1 265 1+1 03/29/83 280 3+1 03/26/83 280 4+1 265 2+1 355 3+1 285 1+1 04/05/83 325 1+1 04/02/83 275 2+1 225 2+1

'30 2+1 295 2+1 04/12/83 290 2+l 04/09/83 290 3+1 245 3+1 285 4+1 285 4+1 04/19/83 280 2+1 04/16/83 215 2+1 280 l+l 295 l+l 260 1+1 04/26/&3 270 3+1 04/23/83 310 2+1 265 (a) 2&5 2+1 325 l+l 05/03/83 335 (b) 2+1 04/30/83 285 2+1 250'. 3+1 295 3+1 325 4+1 05/10/83 265 3+1 05/07/83 290 l+l 270 2+1 285 2+1 320 l+l 05/17/83 345 3+1 05/14/83 305 4+l 295 2+1 300 3+1 315 4+1 05/24/83 385 3+1 05/21/83 315 l+l 290 3+l 310 3+1 335 2+1 05/31/83 390 2+l 05/28/83 300 1+1 310 1+1 320 2+1'+1 335 l+l 06/07/83 385 l+l 06/04/83 330 l+l -

315 l+l 325 320 06/14/83 380 4+1 06/ll/83 340 2+1 310 2+1 330 2+1 330 l+l 380 2+1 06/18/83 320 3+1 295 3+1 335 3+1 325 2+1 06/21/83 06/28/83 390 1+1 06/25/83 325 2+1 310 2+ l 335 2+ 1 335 3+1

" Iodine cartridges are sampled weekly. Concentrations are <0,10 pCi/m~ unless otherwise noted, (a) Missing filter. See list of missed samples.

(b) Estimated average weekly volume.

DONALD C. COOK AIRBORNE IODINE-131% and GROSS BETA in AIR PARTICULATE FILTERS (Meekly Collections)

Gross Beta 10 Ci/m ON-SITE 6 NEM BUFFALO SOUTH BEND DOMAGIAC COLOI&

Collection Volume Gross Collection Volume Gross Volume Gross Volume Gross Volume Gross Date (m3) Beta Date (me) Beta (m3) Beta (eP ) Beta (mt) Beta 07/05/83 380 I+I 07/02/83 335 3+ I 305 2+1 330 2+I 320 2+ I 07/12/83 335 3+1 07/09/83 350 2+I 300 2+I 330 1+1 325 I+I 07/19/83 380 4+1 07/16/83 325 4+I 315 3+1 315 3+I 320 3+ I 07/26/83 380 2+1 07/23/83 355 3+1 295 4+1 320 3+1 315 3+I 08/02/83 375 3+1 07/30/83 350 3+I 315 3+I 325 3+I 300 5+I 08/09/83 390 2+1 08/06/83 350 3+1 310 2+I 325 2+I 320 I+I 08/16/83 375 2+1 08/13/83 365 3+1 315 1+1 320 2+1 325 2+1 08/23/83 370 3+ I 08/20/83 370

'+1 340 1+1 320 3+1 310 3+I 08/30/83 400 4+1 08/27/83 380 3+1 325 4+1 335 3+1 320 <I 09/06/83 385 2+1 09/03/83 350 4+1 330 4+1 320 4+1 305 5+1 09/13/83 375 3+I 09/10/83 410 2+1 345 2+1 315 2+1 300 1+I 09/20/83 380 2+1 09/17/83 430 3+1 345 3+1 345 1+1 330 1+I 09/27/83 325 3+1 09/24/83 395 1+1 330 I+1 320 2+1 325 1+I 10/04/83 265 9+1 10/01/83 *395 8+1 340 5+1 320 5+1 330 2+1 10/11/83 735 2+1 10/08/83 425 2+1 335 1+1 430 4+1 510 2+1 10/18/83 590 2+1 10/15/83 440 4+1 325 2+1'+1 595 2+1 635 1+1 10/25/83 260 1+1 10/22/83 505 2+1 365 365 3+1 750 1+1 11/01/83 300 2+1 10/29/83 445 3+1 215 3+1 200 520 1+1 11/08/83 280 4+1 11/05/83 345 5+1 300 3+1 255 3+1 265 2+I 11/15/83 305 4+I 11/12/83 415 4+I 310 3+I 255 3+I 245 I+ I 11/22/83 315 4+I 11/19/83 420 4+I 305 2+I 250 I+I 400 11/29/83 11/26/83 I+ I 345 <I 320 6+I 310 2+I 240 5+I 570 12/06/83 275 4+I 12/03/83 525 2+I 255 3+I 2+I 250 300 2+1 12/13/83 310 6+I 12/10/83 575 4+I 275 2+I 250 4+I 260 I+ I 12/20/83 275 4+I 12/17/83 525 2+1 255 3+2 I+I 5+I

~

250 300 2+I 12/27/83 275 12/24/83 430 4+1 270 4+A 255 I+1 01/03/84 5+I (n) (a) 250 12/31/83 470 <1 250 <I 240 1+I 60n 2+1

• Iodine cartridges are sampled weekly. Concentrations are <0.10 unless otherwise noted.

Sample was not available. See list oF missed . es.

1983 DONALD C. COOK GAMA ISOTOPIC. ANALYSIS OF MONTHLY AIR PARTICULATE COMPOSITES Indicator Stat'ions Back round Stations Ci/ms Ci/ms Month Be-7 ~Other O~ther January 0.22+0.07 <0.01 0.17+0.06 <0.01

'February '.23+0.05 <0.01 0.28+0.06 <0.01 March 0.34+0.04 <0.01 0.42+0.06 <0.01 (See following page for gamma isotopic analysis quarterly air particulate composites.)

STRONTIUM 89 AND STRONTIUM 90 ANALYSIS OF QUARTERLY AIR PARTICULATE COMPOSITES Indicator Stations Back round Stations Collection Ci/ms Ci/mo r Period Sr-89 Sr-90 Sr-89 Sr-90 1st Quarter <0.002 <0.001 <0.002 <0.001

+ Analysis frequency changed to quarterly for gamma isotopic analysis by individual stations. Strontium-89 & 90 analysis was deleted. These changes were made effective April 1983.

37

• ~

P

1983 D.C. Cook Plant Gamma Isotopic Analysis of Quarterly Air Particulate Filter Composites Collection PCi/m3 Location Date Be-7 Other Gamma OilS-1 2nd Quarter 0.22+0.09 <0.01 II ONS-2 0.43+0.12 <0.01 ONS-3 0.58+0.16 <0.01 ONS-4 0.70+0.18 <0.01 ONS-5 0.52+0.12 <0.01 ONS-6 0.46+0.13 <0.01 NBF 0.53+0.14 <0.01 SBN 0.51+0.17 <0.01 DON 0.36~0.13 <0.01 COL 0.43+0.14 <0.01 ONS-1 3rd Quarter <0..1 <O.O1 ONS-2 <0. 1 <0.01 ONS-3 0.4+0.1 <0.01 ONS-4 0. 3+0. 1 <0.01 ONS-5 0.4+0. 1 <0.01 ONS-6 0. 3+0. 1 <O.O1 NBF 0. 3+0. 1 <0.01 SBN 0. 2+0. 1 <0. 01 DOW 0. 3+0. 1 <0. 01 COL 0. 1+0. 1 <0. 01 ONS-1 4th Quarter 0.5+0.1 <O.O1 ONS-2 0.3+0.1 <0.01 ONS-3 0.6+0.1 <0.01 ONS-4 0.6+0.1 <0 01 F

ONS-5 0.4+0.1 <0.01 ONS-6 0.4+0.1 <0.01 NBF 0.5+0.1 <0.01 SBN 0.2+0.1 <0.01 DOI t 0.2+0.1 <0.01 COL 0.2+0.1 <0.01 38

DONALD C. COOK Sr-89*/90 and 1-131 CONCENTRATIONS in MILK SAMPLES (Monthly Collection)

Indicator Stations Back round Stations Collection Site: ra. man tevensvz e K Ga ien Dowa iac Kl South Bend Kl Collection Date I-131 Ci/1 01/08/83 <0.5 <0.5 <0.5 <0.5 <0. 5 02/05/83 <0.5 <0.5 <0.5 <0.5 <0.5 03/05/83 <0.5 <0.5 <0.5 <0.5 <0.5 03/26/83 <0.5 <0,'5 . <0.5 <0.5 <0.5 04/16/83 <0.5 <0.5 <0.5 <0.5 <0.5 04/30/83 <0.5 <0.5 <0.5 <0.5 <0.5 05/14/83 <0. 5 <0.5 <0.5 <0.5 <0.5 05/28/83 <.0.5 (0.5 (0.5 (0.5 (0.5 06/11/83 (0.5 (0.5 <0.5 (0.5 (a) 06/25/83 (0.5 (0.5 . (0.5 (0.5 (0.5 Sr-90 Ci/1 Ol/08/83 2+1 2+1 3+1 7+1 3+1 02/05/83 1+1 5+1 3+1'+1 7+1 2+1 03/05/83 1+1 2+1 4+1 2+1 03/26/83 1+1 1+1 2+1 3+1 2+1 (Strontium-89 and 90 analyses were delet d :-rom the program beginning were deleted from the program beginning April 1983.)

+ Sr-89 was determined on each sample and was ( pCi/I unless otherwise noted.

{a) Sample not available see listing of missed samples.

1983 DONALD CD COOK RADIONUCLIDES in MILK S&PLES (Monthly Collections)

Indicator Stations Back round Stations Collection Site: Brid man K2 Stevensville Kl Galien Dora iac Kl South Bend Kl Collection Date Cs-137 Ci/1 01/08/83 <10 <10 <10 <lo <10

<10 <10 <10 <10 02/05/83 <10 03/05/83 <10 <10 <lo <lo <10 03/26/83 <10 <lo <10 <lo <10

<10 .<10 <10 <10 <10 04/16/83 <10 04/30/83 <10 <10 <10 <10

<10 <10 <10 <10 <10 05/14/83 <10 <io 05/28/83 <10 <10 <10 06/11/83 <io <10 <so <10 06/25/83 <10 <10 <10 <10 Other Gamma Emitters Ci l 01/O8/83 <10 <10 <10 <lo <10 02/05/83 <10 <10 <10 <10 <10 03/05/83 <10 <10 <10 <lo <lo 03/26/83 <10 <10 <lo <10 <lo

<10 <10 <10 <10 <10 04/l6/83 <10 04/30/83 <10 <10 <10 <10 05/14/83 <10 <10 <10 <10 <10

<10 <10 <10 <10 <10 05/28/83 <10 06/11/83 <10 <10 <10 (a)

<10 <10 <10 <10 <10 P6/25/83 (a) Sample not available, see listing of missed samp..es.

CONCENTRATIONS in MILK SJQiPLES (Collection every two weeks)

Indicator Stations Ci/'-131 Back round Stations Collection Site: r man tevensv e K Ga ien Dowa iac K1 South Bend Kl Collection Date I-131 07/09/83 <0.5 <o.s (0.5 ~

.0. 5 <o.s 07/23/83 <0.5 <0.5 <0.5 <0.5 <0.5

<o.s <0.5 <o. s <0.5 <0 ~ 5 08/13/83 <0.5 <o.s 08/27/83 <0.5 <0. 5 <o.s 09/10/83 <o. s <0. 5 <o.s <o.s <o.s 09/24/83 <o.s <o.s <o.s <o.5 <o.s 10/08/83 <o.s <o. 5 <0. 5 <0.5 <o.s 10/22/83 <o. s <o.s <0. 5 <0.5 <o.s

<o.s <0. 5 <o.s <0. 5 <o. s 11/05/83 <o.s

~

11/19/83 <o. 5 <0. 5 <o.s <0.5 12/03/83 (o.s <0. 5 (a) c'n. 5 (A. 5 12/17/83 (0. 5 <0.5 (0.5 <0.5 (0.5 (a) See list of missed samples.

DONALD C. COOK RADION'JCLIDES in YI"K SPPfPi.ES.

(Honthly Collec "ons)

Xndice or 8 taticns Back round Stations Collection Site: Brid man K2 Stevensviile Xl Gal en Dowa iac Kl SoutiI Bend Kl Collection Date Cs-137 Ci/1 07/09/83 <10 (10 <10

<10 <10 <10 ~50 07/23/83 08/13/83 <10 <10 <10 <io <10

<10 <10 <10 <10 <10 08/27/83 <10 09/10/83 <10 <10 <10 <10 09/2EI /83 <10 (10 ( ~

0 <10 <10 10/08/83 <10 <io <'0 <10 <1O 10/22I83 <10 <0 <10 <10 <10

<10 (1P <10 <10 <10 11/05/83 11/19/83 (10 (1 0 <10 <io <io 12/03/83 <io <io (a; <10 <io 12/17/83 <50 <10 <io (ip (50 3"nsr Gamma Bmitters Ci l 07/09/83 <10 <10 <10 <~10 07/23/83 <10 (10 <19 I

08 13/83 <10 <~o <ln <10 <10

<10 <10 (10 <10 <10 08/27/83 (10 <10

<'0 <5.0 <10 09/10/83 (1P <10 09/2C/83 <10 <lO

<io <1C <10 <1O 10/08/83 <1G

<10 lpl22I83 <io <0 <10 <10

<'0 <10 11/05/83 <10 <10 (1C 11/19/83 <50 <io (io <10 <io 12/03/83 <ip (io (a) <10 <10 12/17/83 <50 ('. 0 <io <in <in a) See l.'is" o"- missedd samp e s.

1983

'ONALD C. COOK GAKfA ISOTOPIC ANALYSIS OF PRECIPITATION S&PLES (Monthly Collections)

Collection Sites: Indicator BBackBround 2 2 Collection Period ~Ci/1 nCi/m ~Ci/1 nCi/m January <10 <0.20 <10 <0.20 February <10 <0. 60 <10 <0.30 March <10 <0. 60 <10 <0.60 April <10 <0. 60 <10 <0.40 (Precipitation samples were deleted from the program beginning May 1983.)

43

~ ~

0

~,r II t p f

0 e

1983 DONALD C. COOK GA%Q, EMTTERS IN LAKE WATER SAMPLES (Monthly Composites of Indicator and Background Stations)

Gamma Emitters Ci/1/nuclide Month Indicator Com osite Back round Com osite January <10 <10 February <10 <10 March <10 <10 April <10 <10 (Lake water collection has been deleted from the program beginning May 1983.)

44

1983 DONALD C. COOK RADIONUCLIDES IN WELL WATER SAMPLES (18-week Interval Collections)

Back round Stations Indicator Stations Collection Site: ONS 1 ONS 2 ONS 3 ONS 4 ONS 5 ONS 6 ONS 7 Collection Date Tritium Ci/1 02/10/83 <1000 <1000 <1000 3200+900 <1000 2200+900 <1000 05/10/83 <1000 <.1000 <1000 <1000 <1000 <1000 <1000 08/11/83 (b) <1000 <1000 <1000 2600+600 1500+600 4100+600 600+600 ll/10/83 (c) <1000 700+500 <1000 8400+600 3300+500 2800+500 600+500 Gamma Emitters Ci/1 02/10/83 <10 <10 <10 <10 <10 '10 <10 05/10/83(a) <20 <20 <20 <20 <20 <20 <20 08/11/83 (b) <10 <10 <10 <10 <10 <10 <10 ll/10/83 (c) <10 <10 <10 <10 <10 <10 <10 (a) Insufficient sample for more sensitive analysis.

(b) Sample from ONS-1 was collected only on 08/24/83 due to loss- of power.

(c) Sample from ONS-3 was collected on 11/17/83 and from ONS-5 on ll/21/83.

0

~ ~

DONALD C. COOK RADIONUCLIDES IN SEDIMENT SAMPLES (Semiannual Collections)

Collection Collection C'/ (dr )

Site Date Gamma Emitters Cs-134 Cs-137 ONSN 05/24/83 <0.15 ONSS 05/24/83 'O.15 OFSN 05/24/83 <0.15 OFSS OS/24/83 <0.15 ONSN 10/18/83 <0. 15 ONSS 10/18/83 <0. 15 OFSN 10/18/83 <0. 15 OFSS 10/18/83 <0. 15 RADIONUCLIDES IN FISH SAMPLES (Semiannual Collections)

~Cii (wee)

Collection Collection Gamma Emitters Cs-134, Cs-137 Site Date Co-58 Co-60 Nn-54 Fe, En-65 North on site 05/06/83 <0.13 <0. 26 North off site 05/06/83 <0.13 <0. 26 South on site 05/06/83 <0.13 <0.26 South off site 05/06/83 <0.13 <0.26 North on site 09/28/83 <0.13 <0.26 North off site 09/28/83 <0.13 <o.26 South on site South off site 09/28/83 <0 '3 <0.26 09/28/83 <0. 13 <0.26 RADIONUCLIDES IN FOOD CROPS (Annual Fall Harvest Collection)

Collection Site: ON Site OFF Site Collection Sample Ci/ wet)

Gamma Emitters 09/19/83 Broad Leaf <o.o6 <0.06 Vegetable (grapes) 46 P

DONALD C. COOK GAMA. RADIATION (Quar ter ly)

(Measured using Thermoluminiscent Dosimeters)

Date Annealed: 12/13/82 03/21/83 06/22/83 09/23/83 Date Read: 04/05/83 07/18/83 10/21/83 01/16/84 1st 2nd Otr. 3rd Otr. 4th Main Backup Main Backup Main Backup Main Backup TLD TLD TLD TLD TLD TLD TLD TLD Location Measured mR/week Indicator Stations On-Site 1 1.1+0.3 1.0+O.l 1.0+0.

On-Site 2 1.0+O.l 1.1+0.1 l. 1+0.

1 1.1+0. 1 1.0+0.1 1.1+0 1 l. 0+0. 1 1.5+0.2 1.4+0.2 On-Site 3 1

1.1+0.1 1.0+0.2 1.4+0.2 1.4+0.1 1.0+0.1 1.0+0.1 1.0+0.1 1.0+O.l 1.1+0.1 1.0+0.1 1.4+0.1 1.3+0.1 On-Site 4 On-Site 5 1.0+0.2 1.0+0 I 1.0+0.1 1.0+O.l l. 0+0. 2 1.0+0.1 1-.4+0.2 1.4+0.1 1.1+O.l 1.0+O.l 0.9+0.1 1.0+0.1 1.0+0.2 1.1+0.1 1.5+0.2 1.4+0.1 On-Site 6 0.9+0.2 0.9+O.l. 1.0+0.1 1.0+O.l On-Site 7 1.0+0.1 1.0+0.1 1.2+0.2 1.4+0.2 1.1+0.1 0.9+O.l 1.1+0.1 1.0+0.1 1.1+0.1 1.1+0.1 Missing 1.4+0.2 On-Site 8 1.0+0.2 1.0+0.2 1.0+0.1 0.9+0.1 1.0+0.2 1.1+0.1 On-Site 9 1.4+0.1 1.3+0.1 1.1+0.1 1.0+0.2 1.0+0.1 1.1+0.1 1.1+0.2 1.1+O.l 1.4+0.1 1.4+0.1 Background Stations Coloma 1.0+O.l 0.9+0.2 1.0+0. 1 1.0+0.1 l. 0+0. 0. 9+0. 1 1 1..4+0. 2 1.4+0.2 Dowagiac 1.0+O.l 0.9+0.1 1.0+0.1 '.0+0.1 l. 0+0. l. 0+0.

1 1 1.4+0.1 1.4+0.2 New Buffalo 1.1+0.2 1.2+0.1 1.1+0.1 1.1+0.1 l. 1+0. 2 l. 0+0. 1 1.5+0.2 1.4+0.1 South Bend 1 2+0 1 1.1+0.3 1.1+0.1 1.0+0. 1 1. 0+0. 1 0. 9+0. 1 1.6+0. 2 1.3+0.1 Off-Site- 1 1.0+0.1 1.0+0.2 1.1+0.1 0. 9+0. 1 1. 2+0. 2 l. 0+0. 3 1.4+0.2 1.3+0.1 Off-Site- 2 1.0+0.1 1.0+0.1 1.1+0.1 1.0+0. 1 1. 0+0. 1 1.1+0.1 1 4+0.2

~ 1.3+0.1 Off-Site- 3 l.1+0.2 0.9+0.1 1.0+0.1 0.9+0.1 1.1+0.2 1.0+0.1 1.3+0.2 1.4+0. 1 Off-Site- 4 1.1+0.2 1.1+0.1 1.1+0.1 1.1+0.1 1.1+0.2 1.1+0.1 1.6+0 2~ 1.4+0..2 Off-Site- 5 1.0+0.3 1.1+0.2 .1+G.l 1.0+0.1 1.1+0.1 1.0+0.1 1.6+0.2 1.4+0.1 Off-Site- 6 1.1+0 l.1+0.2 1.0+O.l F 0+0.1 1.1+0.1 1.1+0.1 1.5+0 2~ 1.5+0.1 Off-Site- 7 1.0+O.l 1.0+0.2 0.9+0.1 1.0+0.1 1.0+0.2 0.9+0.1 1.3+0.1 1.4+0.1 off-Site- 8 1.2+O.l 1.2+0.3 1.0+0.1 1.1+0.1 1.1+0.1 1.2+0.1 1.3+0.2 1.6+0.2 Off-Site- 9 1.2+0.2 1.2+0.3 1.1+0.1 1.2+0.1 1.2+0.2 1.1+0.1 1.3+0.2 1.5+0.1 Off-Site-10 1.0+0.2 1.0+0.2 0.9+0.1 1.1+0.1 1.1+0.2 l. 1+0. 2 1.4+0.2 1.4+0.2

COOK LISTING OF MISSED S82PLES 1983 Expected Collection Samole T e Location Date Reason SBN 01/15/83 Filter was lost in the wind+

AP/CC ONS-3 04/05/83 Sample was lost SBN 04/23/83. Filter was last.

Milk SBN .- . 06/11/83 Not Available Ap/CC Coloma 12/24/83 Not Available Milk GAL 12/03/83 Not Available

• r 48

SECTION 6 QUALITY ASSURANCE DATA 49

0 '

a

~

1983 gualit Control Anal ses Summar The table below summarizes results of samples xun fox process quality control purposes during the subject year. These listings are in addition to such measurements as detector backgrounds, check source values, radiometric-gravimetric comparisons, system calibrations etc.

Detailed listing of each measurement are maintained at the laboxatoxy and are available for inspection if required.

Blank Sam les lbclide Number of Number of Analyses Exceeding

~Anal zad Determinations the LLD for'hat Anal sis Gross Alpha 49 0 Gross Beta 101 0 H-3 90 0 U-234 17 0 Th-230 19 0 Ra-226 37 0 Pb-210 29 0 I-131 Sr-89,90 81 0 Pu-239 32 0 Am-241 3 0 Blank E-131 analyses are performed with each batch of samples processed all blank data were below the detection limit.

50

4 Nuclide -Number of within-2. s'igma 3 sigma "

Differing from

~final sed Det'ns of known. of known knownb >3s'

'-3 Gross Alpha Gross Beta U-234 49

'$01 90 17

.3'ithin 49 101 90

'7,

.'h-230 19 19 4~

Ra-226 37 37 .'.

.-Pb 210 29 29 -'.

Sr-90 ,81 81*,

Pu-239 '32 32 Am-241 3 e

Nuclide Number of No, Ajreeing No. Agreeing No. Differing

~final sed Det'ns Within 3 ~si ma ~h' ~3si ma Gross Alpha 47 47 Gross Beta 142 142 H-3 151 151

"'-23I4 12 12 Th-230 io 10 Ra-'226 21 20 Pb-210 19 19 Sr-89 47 47'2 Sr-90 54 Pu-239 12 Am-241 3 2 Gamma 13 "13

'- 51

1983 USEPA EBERLIiME INTERCONPARISON PROGRAM Sam le T e Analss{s ,Value (EPA). ,Value {ETC) . ~ Un'ts Air -Filter ~ ='lpha Z6+'1-S. 2-:-- '19+2- 'Ci/Filter Air Filter Beta 68 8,.7 72+7 pCi/Filter Air Filter Sr-90 20+2'.6, 26+8 pci/Filter Air Fi'ter Cs-137 42+6 pCi/Filter Air Filter Alpha 27+8,7'3+8.*7

'+1 pCi/Filter Air Filter Beta 36+8.7 41+4 ~ pCj./Filter Air Filter Sr-90 10+2,h 12+5 . pC'/F'lter Air Filter Cs-137 15+8.7 10+2  ; pCj JFilter Food Sr-89 35+8.7 31i19 pCj /kg Food Sr-90 28+8.$ 42+9 .pc j./kg Foog I-131 37+16.4 (27 pQQ/krs Food Cs-137 31+8.7 52+23 pCi/kg Sr-89 37+8.7 19+9 pCi/1 Pilk Sr-90 18~2.6 11+4 pCi/1 Milk I-131 55+10.4 66+7 .

pCi/'Ci-/1 Kilk Cs-137 26+8.7 28+3-Milk 1512+131 , 18,50+190 pC'/1 Milk Sr-89 1)+8~'7 $ 4+6 pci/1 Sr-90 " l4i2-. 6-'" - 16+3 pCi/1

'Ailk'lilk I-131 40+10.4 ,54+4 pCi/1 Milk Cs-137 33+8.7, 36+20 pC>/1

~a.ilk 1550+135 '550+210 mc./1.

Water Alpha 29i13 I7i2 pCi/1 Mater Beta 31+8.7 '44+6 pCi/1 Water Alpha 11i8;"7 17+3 pC'"/1 Water Beta 57i8.' ,46+5 pci'/1 Water Alpha 7+5.0 7+2 pCi /1 Water Beta 22+5.0 24+2 pCi/1 Water Alpha 14+8 7{ 13+2 pCi/1 t

Water Beta U

16+8.,7 31~10. 4 33i2 27+5 pC" pCi/1 jl Mater Sr-89 29.2+8.7 12+8 pc'/1.

Water Sr-90 17.2+2.6 22+4 pci/1 Mater Sr-89 15+8.7 7+5 pCi/1 Water Sr-90 10~2.6 5+2 pCi/1 Mater H-3 2560i612 3090+510 pCi/1 Mater H-3 1529+337 1600+600 pCi/'Ci/1 Water H-3 1210+570 1370+600 Mater Pu-239 8.6i1.5 9.0+0.5 pCi/1 Mater I-131 27+10.4 19+4 pCi/1 Water I-131 14+6 16+2 pCi/1 Mater Cr-5 1 45+9 102+70 pCi/1 52

Samnle T e Analvsis Value (EPA) Value (EIC) Units Mater Co-60 22+9 23+3 pCi/1 Ma ter Zn-65. 21+9 20 3 pCi /1 Mater Ru-106 ,48+9 49+13 pC'/l Water Cs-134 20+9 21+3 pCi/1 Mater Cs-137-, ( 19+9 20+3 PCi/

Mater Cr-51 51+8.7 42+37 pCi/1 Mater Co-60 19+8 21+3 pC'/l Mater Zn-'6'5 '4'0+8. 7 28+5 pCi/1 Water Ru-106 .52~8.7 46 pCi/1 Mater Cs-134 15+8.7 13+3 pCi/I Mater Cs-137'a-226 22+8.7 22~3 pCi/1 Water 12;7+3.3 6.6~2.0 pci/1 Hater Ra 228 0 <6.0 pCi/'Ci/1 Mater Ra-226 4.8+0.7 4.4+1.3 Water, ='"Ra-228 0 '2 p Ci/l Water Ra-226 3. 1+0. 81 2. 5+0. 8 pCi/1 Water Ra-228 2.0+0.52 <5. 3 pCi/l Water Alpha- 46~19.9 . 87+39 pCi/1 Water 'eta 143+12.4 138+54 pCi/1 Mater Sr-89 24+8.7 '5+4 pCi/1 Water 'Sr-90 13~2;6 20+4 pCi/l Water Ra-22'6 8.5+2.25 6.8~2.0 pCi./l Mater Ra-228" 4.7+1.21 pCi/:

Water Co-60 30+8.7 29+2 pCi/1 Water Cs-134 33+8.7 29+4 pC'1 Mater Cs-137 27+8.7 25+4 pCi/1 Water U 25+10.4 19il pCi/1 NOTE: Includes all data received for 1983 samples up to 02/10/84.

53

TLD INTERCOMPARISON'0C DATA (Eberline-Battelle Pacific Northwest Labs) c 1983 Total MR+2 Si ma'"

1st Quarter 2nd'Quarter '-"'rd and 4th Quarter Actual Measured Actual'0'-

Measured Actual Measured-'

N rH 27: 24+6 80+14 3+4 36 32+3

'0 85+11 .'515 14+3-40 37+4 "84 90+13 28 30+4 ',"

45 41~7 -

68- 70+13 ~ 28 34+7 58 53+5 50( 47.~5 ,<<.40 37+4 69 62+6 Sp 50+7 40 40+7 ..

69 64+6 68-:.-.. 59+7 "57 52+5 " ~

69 64+9 84 81 '8 - -"57 '8+6 97 85+15 99., 97'16 !88 75+10 97 85~15 99 102+10 *

~,88 77+8

~ I 54

F 4

I ~

4 FI