ML19256D361

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Radiological Environ Monitoring Semiannual Rept,Jan-June 1975. Prepared for Met Ed
ML19256D361
Person / Time
Site: Three Mile Island Constellation icon.png
Issue date: 08/31/1975
From:
RADIATION MANAGEMENT CORP. (RMC)
To:
Shared Package
ML19256D362 List:
References
RMC-TR-75-13, NUDOCS 7910170912
Download: ML19256D361 (56)
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50 339 RMC.TR 75-13 RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT For The THREE MILE ISLAND NUCLEAR STATION 1975 SEMIANNUAL REPORT

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RMC-TR-75-13 RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT For The THREE MILE ISLAND NUCLEAR STATION Prepared for METROPOLITAN EDISCN COMPANY BY RADIATION MANAGEMENT CORPOPATION AUGUST 1975 1448 024

.# B e TABLE OF CONTENTS PAGE LIST OF FIGURES . . . . . . . . . . . . . . . .... ii LIST OF TABLES . . . . . . . . . . . . . . . .... ii

SUMMARY

. . . . . . . . . . . . . . . . . . . .... 1 s INTRODUCTION . . . . . . . . . . . . . . . . .... 2 PROGRAM . . . . . . . . . . . . . . . . . . .... 2 Ob ject ives . . . . . . . . . . . . . . .... 3 Program Design . . . . . . . . . . . . .... 3 Program Exceptions . . . . . . . . . . .... 4 RESULTS AND DISCUSSION . . . . . . . . . . . .... 4 Aquatic Environment . . . . . . . . . .... 8

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Air Environment . . . . . . . . . . . .... 8 Terrestrial Environment . . . . . . . .... 12 Direct Radiation . . . . . . . . . . . .... 12

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ASS ESSMENT OF IMPACT . . . . . . . . . . . . .... 13 CONCLUSIONS . . . . . . . . . . . . . . . . . .... 17 REFERENC ES . . . . . . . . . . . . . . . . . .... 18 APPENDIX A Sampling Locations . . . . . . . .... 21 APP ENDIX 3 Data Tables . . . . . . . . . . .... 31 e

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LIST OF FIGURES PAGE 1.

MONTHLi AVERAGE TFITIUM CONCENTRATIONS IN THE SUSQUEHANNA 9 RIVER IN THE VICINITY OF TMINS

2. WEEKLY AVERAGE GROSS BETA CONCENTRATIONS IN AIR 3ORNE 11 PARTICULATES IN THE VICINITY OF TMINS
3. MONTHLY AVERAGE GAMMA DOSE RATES AT TMINS 14 LISTOFTABhjS 1.

SYNOPSIS OF THE OPERATIONAL RADIOLOGICAL ENVIRONMENTAL 5 MONITORING PROGRAM FOR TMINS 2.

QUARTERLY

SUMMARY

OF RADIONUCLIDE CONCENTRATIONS IN 6 ENVIRONMENTAL SAMPLES FROM TMINS 3.

SUMMARY

OF DIRECT RADIATION MEASUREMENTS AT TMINS 7 4.

ENVIRCNMENTAL SAMPLES SHOWING HIGHER THAN NOPMAL LEVELS 15 5.

COMPARISON OF TRITIUM CONCENTRATICNS IN SURFACE WATER '4ITH 16 STATION EFFLUENT DATA 1448 026 11 9

SUMMARX e

+ During the period January 1 to June 30, 1975, Ra dia t ion

Management Corporation participated in tne operational e radiological environmental monitoring program (REMP) conducted by i Metropoli*.an Ediscn Company at Tnree Mile Island Nuclear Station j (TMINS) .

i i The RMC portion cf this program was designed to aid in meeting i the obligations of the Environmental Technical Specifications for 1

i TMINS Unit #1 (TMI- 1 ) ( 1 ) .

i A total of 1033 analyses were performed on 936 samples during the

period covered by this report.

t i Surface water (3 locations, 18 samples) was analyzed for 3H and

! gamma emitting nuclides. Crinking water (2 locations, 9 samples)

I was analyzed for 3H, a 9Sr, '0Sr and gamma emitting nuclides.

I t Tne air environment sampliag program included air particulates, 4

air iodine, and precipitation. Air particulates (10 locations, t 259 samples) were analyzed for gross beta activity and gamma i emitting nuclides. Charcoal cartridges (4 locations, 103 samples) were analyzed for 131I. Precipitation, primarily rain 4

water, (4 locations, 24 samples) was analyzed for gross beta activity, 3H, **Sr and 'OSr, and gamma emitting nuclides.

= Milk (6 locations, 36 samples) was taken from the terrestrial i environment and analyzed for 131I, s'Sr and Sosr, and gamma emitting nuclides.

In addition, 488 analyses for immersion dose (21 locations) using TLDs were made during this period.

All radionuclide concentrations were similar to those normally r found in locally unaffected areas, except for 3H in surface water.

i The 3H concentrations in surface water at the downstream indicator locations showed elevated levels relative to the i upstream samples intermittently throughout the reporting period.

A small increase in the 3H levels at the 2 downstream locations where river water is used as a drinking water source was observed on 1 occasion. The maximum dose which coulo be attributed to

, this incremental increase was not significant.

i It is tharefore concluded that station operation did not cause any changer in the Obcerved environmental levels of radioactivity i or radiation levels, except for 3H, during this reporting period.

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INTRODUCTION A complete radiological environmental monitoring program (R EMP) for Three Mile Island Nuclear Station (TMINS ) has been conducted by Metropolitan Edison Company since June 1969. Radiation Management Corporation has participated in this program since February 21, 1974 Results of the preoperational phase of the REMP up to June 5, 1974, the date of initia.'. criticality of TMI-1, were reported in two previous RMC dccuments (z +3 ). The results of the REMP for the initial operational phase (June 5 to December 31, 1974) were reported in a previous RMC document (*). This report continues the operational series with coverage of the first six months of 1975. It presents in detail the type and number of samples analyzed, the analyses performed and the data generated by FMC during the period January 1 to June 30, 1975.

Interpretation of the data and conclusions are presented.

Three Mile Island is the site cf en operating nuclear power unit of the pressurized water reactor (PWR) type. When complete the station will consist of two reactor units. Unit 1, rated at 871 MWe, achieved criticality on June 5, 1974 This marked the beginning of the operational phase cf the REMP. Unit 2, rated at 959 MWe, is under construction and scheduled for commercial operation in 197G.

The station is located on Three Mile Island in the Susquehanna River, in Dauphin County, ten miles southeast of Harrisburg, Pennsylvania. The average flow of the river at this point is 34,000 cfs(5). The site consists of an 814 acre tract ou Three Mile Island and several smaller adjacent islands. General climatic conditions are characterized by a rild continental-type climate with little severe weather. Agriculture accounts for the majority of land usage in the area (4 8 %) , with the emphasis or.

poultry, dairy cattle and field crops ( 6).

A previously conducted census of milking animals (6) located within five miles of TMINS was updated during this report period.

A distribution of 1114 milk cows at 38 locations was determined.

The approximate locations of these animals are given in table 3-14 (appendix B) . This is a decrease of 292 cows since August 1974 More specific information on the demography, meteorology and land use characteristics of the local area may be found in the Environmental Report (7), Environmental Statement c a ), Final Safety Analysis Recort for TMI-2("), and the Environmental Report Supplement II(10).

PROG R.3M }kkh h In the operational phase of the REMP, radicanalytical data were collected f or comparison to that generated in the preoperational phase. Differences between these two periods were examined statistically to determine wnether any station e xi

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f based on the magnitude and fluctuations or radioactivity levels determined in the preoperaticnal phase.

9hd2CliveE The ob jectives of the operational radiological environmental program are:

1. To fulfill the obligaticns of the Radiological Surveillance-Envircnmental sections of the Environmental Technical Specificar. ions tor TMI-1

, 2. To determine whether any statistically significant l increase occurs in the concentration of radionuclides j in critical pathways.

t i 3. To detect any buildup of long-lived radionuclides in i the environment.

4. To detect any change in amcient gamma radiation

} 1evels.

{ 5. To verify that radioactive releases are within

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allowable limits and that TMI-1 ocerations have no i

detrimental ef fects on ene nealth and saf ety of the public or on the environment.

i This report provides information f or the Metropolitan Edison Company, regulatory agencies and the public record toward these objectives.

Procras gggi2G in order to meet the stated objectives, an appropriate

. operational REMP was developed by RMC in cooperation with Metropolitan Edison Company. samples for the operational REMP were taken frcm the aquatic, atmospheric, and terrestrial environments. Samples of varicus media were selected to obtain data for the evaluation of the radiation dose to man and important organisms. Sample types were based on ( 1) establisned critical pathways for the transfer of radionuclides through the

' environment to man, and (2) experience gained during the preoperational and initial operational phases. Sampling locations were determined from site meteorology, Susquenanna i River hydrology, local demograpny and land uses.

sampling locations were divided f.nto two classes--indicator and control. Indicator stations are enose whien are expected to manif e s t station effects, if any exist; control samoles were collected at locaticas which are believed to be unaf f ected by station ooerotions. Fluctuations in the levels of radionuclilcs and dir ct radiation at indicator sta ticns are e valua ted witn res pec t to analogous fluctuations at centrol stations, whien are clearly unrelated to sta tion operation. Indicator station data cm

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1 are also evaluated relative to background characteristics j established prior to station operation.

The analysis of samples and the analytical data generated during the program are routinely evaluated by the RMC project leader who is th? liaison with Metropclitan Edison Company personnel.

Further review of REMP design and analytical data is performed by RMC and Metropolitan Edison Company RS+EE professional staff in light of current regulatory trends and operating experience. The analytical prccedures and quality centrol methods utilized by RMC are presented in RMC-TM-75-03. Table 1 summarizes information on the Three Mile Island Nuclear Staticn operational REMP as performed by RMC. Appendix A explains tne RMC sample coding system which specifies sample type and relative locations at a gla nce . Table A-1 gives the pertinent inf crmation on individual sampling locations, while Maps A-1,-2 and -3 show their actual locations.

Procras E3ceotions ,

The cperational REMP was conducted in accordance with the Environmental Technical Specifications for TMI-1. Deviations from the orogram as described in table III of these specifications occurred. All of these deviations were tne result of mechanical failure or severe weather at air sampling locations. Two air particulate samples and one air iodine sample were lost due to severe weather. On three occasions leaks developed in sampling equipment resulting in very small sampling volumes. As a result the minimum sensitivity for gross beta emitter concentrations was above the required 5x10-3pci/m3 Steps have been taken to solve these problems. An additional air sampler was maintained throughcut the report period.

RESULTS AND DISCUSSION Quarterly averages of analytical results are summarized in tables 2 and 3. Table 2 is a summary of gross beta, 3H, 89Sr and SOSr, and 13tI and gamma spectrometric re ults for various samples.

Table 3 is a summary of ambient radiation levels as measured by the rmolumine scent dosimeters. Results for each type of sample were grouped according to the analysis performed. Maans and standard deviations of these results were calculated when applicable. These standard deviations represent sample population variability rather than analytical variability. For this calc'ulation, all results below the MDL were considered to be at tne MDL. The data for individual samples are presented in tabular form in apcendix 3, Taoles 3-1 tnrougn 3-13. Within the data tables a 955 (2 2 sigma) confidence interval is supplied for those data points above the minimum detectable level. All results occurring at or below the relevant minimum detectable level were reported as being "less than" the MDL va lue. These

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TABLE 1 SYNOPSIS OF TiiE OPERATIO!1AL RADIOLOGICAL E!JVIHotlMENTAL mot 41TORING Ph0GkAM FOR THINS i JANUAltY 1 TilHOUGr.1 JUNE 30, 1975 i SAMPLE SAMPLIt1G NUMBER ANALYSIS NUMDER TYPE FH EQt1ENCY IDCATIONS COLLECTED TYPE FREQUENCY PERFORMED -

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Surface Water W* 5 27 3 11 M 27

    • Sr Q 5
    • Sr O 5 Gamma M 27 Air Particulates W 1G 258 Deta W 258 Gamma M 12 Air Iotline W 4 10J isar u 10 3 n

Preci pi ta ti on M 4 24 3 11 O 8 Deta M 24 Ii

    • Sr S/A 4 I

'OSr S/A 4 Gamma Q 8 Milk M 6 36 :Jn1 M 36 e'Sr O 12

'oSr O 12 l A Dosimeters ** M 21 488 Gamma Dose M 4 4tiu OO roTAI, 50 936 1,033 O + At U three locations, more f recaent aliquots of water were obtained for a weekly composite

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TI.Ds on Ultelly's and Kohr Islatid are not excitatiged during winter morittis due to river condi tions.

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SUMMARY

OF RADIONUCLIDE COticENTRATIOt13 Ill ENVIRONMENTAL SAMPLES FROM THINS JANUARY 1 TilHOUGil JUNE 30, 1975 NO. 1st QUARTER AVERAGE 2nd QUARTER AVEHAGE Atl ALYSIS SAMPLES ADV.

  • 2 SIGMA + 2 SIGMA TYPE PE aWORM ED ANALYZED MDb I NDICATOl4 CONTROL IllDicATOR CONTHOL UNITS Surface Water J il 33 33 456*1027 228+b4 2114*0613 189*162 pci/1
    • Sr 5 0 <0.8 <0.9 <0.9 < 1. 2 pei/1
    • Sr 5 2 <0.6 0.6 10.4 <0.7 0.6*0.5 pci/1 Gauuna 33 0 - - - -

pci/1 Air Particulates Deta 251 251 56145 68163 61272 71173 10-3pci/m3 Gamma 12 - - - - -

10-3pci/m3 Fue 12 49*28 73*54 57*7 99124 10-Jpci/m3

$*Mn 5 <0.3 <0.5 <0.2 <0.6 10- J pci / m 8 v$Zr 12 '5.212.2 0.015.9 2.913.7 5.325.9 10-3pci/m3

' stab 12 1115 17110 6.bt8.1 11114 10-3 pet /m8 soJHu 11 1.410.3 2.411.6 0.420.5 1.210.7 10-3pci/m2 m 80+Ru 12 5.815.1 8.717.6 5. St 3. 8 9.2t7.5 10-8 pct /m3 sdSSb 6 <l.2 < 1. 0 0.910.8 3.110.8 10- J pci /m 8 asacs 12 1.311. 1 2.212.1 1.611.4 2.812.7 10- 3 pet /m 8 seice 3 0.710.2 <0.4 <0.4 <0.4 10-Jpci/m3 8 *

  • Ces 12 13 11 23121 13114 23123 10-Jpci/m8 l

Air Iodine 8381 103 0 - -

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l Pr eci pi ta ti on 3 11 8 9 156*S2 164*100 211662 158*220 pet /1 Beta 24 24 10112 12*10 12*5 1117 pet /1 42m **Sr 4 0 - -

<l.0 <1.0 pei/i 4t= SOSr 4 2 - -

<0.8 <1.0 pei/1 m Ga uuna 8 - - - - -

pci /1 Fre 8 26*25 31*3 2318 25*14 pei /1 l c_, '$Zr-Nb 3 1.6*3.0 1. 0

  • 0.1 <0.6 <0.6 pei/1

' Milk a881 30 1 <0.07 <0.15 <0.07 <0.07 pei/1 INJ avur 10 0 <1.2 <l.6 <2.0 <2.5 pei/l

'8Sr 10 9 1. 4

  • l . 4 2.2*0.7 3.71 5.2 3.011.7 pet /l

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i TABLE 3 EUUdO83_9E_AUDI.EUI R ADI ATI{,!N_d[bygtgME T O LIdlHg January 1 through Jurie 30, 1975 1st QUAltTEl4 AV ERAG E 2nd QUAhTER AVERAGE SAMPLE NO. OF TLDs SAH1'L ING 1 2 sagma a 2 sig m.n TYPE ANALYZED PERIOD I NDICA~ loft CONTh0L INDICATOR CONTIOL UNITS Mont hly TLDs 464 12-28-74* 5.011.1 6. 2s 1. 5 5.011.1 6.111.5 mrem /std month to 6-20-75 Shelly's and Kohr 70-26-74** 5.110.9 - - -

atem/utd month Island ouarterly TLDs 24 to 4-01-75 ,

Total TI.Ds analyzed 488

  • This au divided into six nampling perials of approximately one month eacts. Actual sampling dates are listed in tante u-12.
    • This i:; diviled into two udmg>1ing periods for the three sampling stations which are not acce:ssible during the wanter.

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intervals represent the range of values into which 95% of repeated analyses of the sample would fall.

Aqua tic Environment Surface Water Monthly surface water samples were collected at 5 locations on the dates shown in table B 'i. Weekly grab samples from stations 9A2 and 931 were taken and composited monthly. Samples from stations 8E1, 15F1 and 7G1 were taken on a semi-continous basis and composited to monthly sa nples. Each sample was analyzed for 3H and gamma emitting nuclides by RMC procedures HXH and TGC, respectively. Samoles from SE1, 15F1 and 7G1 (drinking water trea tment f acilities) .erra slso analyzed for s'Sr and 'OSr. A new station (SE1, 3 runner Island) was identified in mid-March as a user or the river water as a potable water supply. Sampling at this station was initiated on 29 March 1975.

Results of 3H analyses are presented in table B-2 and figure 1.

Concentrations of 3H were cbserved to increase in January at the two downstream indicator locations 9A2 and 931. No increase was observed at this time at station 7G1 (Cclumbia) . Concentrations returned to background levels in February at all downstream locations. During April, 3H concentrations again increased at stations 9A2 and 931 and also increased at staticas 7G1 and SE1.

As in January, this increase was observed for only one monthly composite. A third single acnth increase was observed in June at station 931 but at none of the other stations. The dose implications of thase 3H levels and a ecmparison with liquid ef fluent data are discussed under " Assessment of Impact".

Results of analyses of surface water for s'Sr and 'OS.! are presented in table 3-3. These analyses were made on untreated water from the Brunner Island water treatment facility (8E1), the Steelton municipal water works (15F1) and the Columbia water trea tment pla nt (7G1) . All a *Sr concentrations were below the MDLs (1 pCi/1) ; 90Sr concentrations were below MDL (0. 6 pCi/1) in 3 of 5 samples analyzed.

Gamma soectrometric analysis of surface water samples showed that no gamma-emitting nuclides were present at concentrations above their respective MDLs. Typical MDLs for gamma spectrometry of

. surface water are niven in table B-13.

Atmoscheric Environment Tne atmospheric environment arcund TMINS was examined by ana ly:ing samples of air particulates, filtered air (for 13 tI) and precipitation. Air particulate samples were collected at 10 locations with low volume air samplars using Hollingworth and Voss HV-70 gauze backed filters. At f our of these locations, air iodine samples were collected in Cesco "B" charcoal flow unrough cartridces connected in series f ollowino the air pa rticulate filters. Air volumes sampled were measured witn dry gas meters 8

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_O MONTHLY AVERAGE TRITIUM CONCENTRATIONS IN THE d SUSQUEHANNA RIVER IN THE VICINITY OF TMJel5 TMINS.1975 10,000 A Downstream Locations l -

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and recorded. Both air particulates and air iodine were sampled weekly. Precipitation was collected by using a 12 inch diameter funnel draining into a five gallon polyethylene bottle. Th accumulated samples were collected weekly and composited for monthly analysis. The amount of precipitation which fell during the sampling period was measured and recorded.

Air Particulates All air particulate samples were analyzed weekly for gross beta activity by RMC procedure TBD and monthly composites of all indicator and of all control samples were examined for gamma emitting nuclides by RMC procedure TGC.

Results of the gross beta analyses are listed in table B-4 Gross concentrations of beta emitters in air increased from February through April and was followed by a decreasing trend in May and June. This increase, although not as large as that observed prior to TMI-1 operation, was similar to the preoperational spring peak. The indica' tor and ccntrol weekly averages plotted in figure 2 demonstrate these annual trends and show similar behavior at both indicator and control locations.

Gross beta activity in all samples averaged 64 x10-3pci/m3 The gamma spectrcmetric results on monthly composites of air particulate filters are presented in table B-5. Prominent naturally occuring nuclides found in all san.ples were 7Be and the fallout nuclides, 1**Ce, 137Cs, S5Zr, S5Nb and 106Ru. In addition 12 samplesfallout s*Mn and 125Sb were detected in 5 of 12 and 6 of respectively. The short-lived fallout nuclides 103Ru and 1**Ce were detected in 11 cf 12 and 3 of 12 samples, respectively. No significant diiierences were observed between indicator and control composites. Typical MDLs for gamma spectrometric analysis of air particulate samples are listed in table B-13.

Air Iodine Gaseous iodine was collected on charcoal cartridges at 4 locations. The resulting samples were analyzed weekly for 131I by RMC procedure IXB. Results are listed in table B-6.

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All results were less than the respective MDLs which were of the order of 0.01 pCi/m3 Precipitation Each precipitation sample was analyzed for gross beta activity by RMC procedure TBA. Tha RMC analytical procedures HXH and TGC were utilized for the analysis of 3H and gamma emitting nuclides, respectively, in quarterly composites of precipitaticn from each station. Concentrations ~ of a9Sr and *0Sr (RMC procedures SRC, SRA) were determined in semi-annual composites from each station.

The results of gross beta activity measurements in precipitation samples are presented in tablu S-7. The data for this period ranged frem 3.5 to 19 pCi/l wb.le averaging 11 pCi/1. The wet 10 1448 036

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WEEKLY AVERAGE GROSS BETA CONCENTRATIONS IN AIRBORNE PARTICULATES IN THE VICINITY OF TMINS V.~ TMINS.1975 100

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deposition of beta activity averaged 1.2 nCi/m2, ranging from 0.3 to 2.4 nci/m2 No differences between indicator and control locations were observed.

The results of analyses of quarterly composites of precipitation for 3H and gamma emitting nuclides are presented in table B-8.

1.lt.um concentrc"4ons averaged 172 pCi/1; slightly lower than i

pre- 7erationa. <e',. The gamma emitting nuclides 7Be and esZr esNb w.re ene o.s / ones detected in precipitation. The observed i_ ;1s oi these nuclides were similar at both indicator and cont *31 locations. Typical MDLs for gamma spectrometric analyses of recipitation are listed in table B-13.

4 Semi-annual ecmposites of precipitation samples from each station were analyzed for a*Sr and 'OSr and the results are presented in

. table B-9. Of the four samples analyzed, afsr was below MDL in all and '0Sr was detectable in 2 samples.

Terrestrial Environment i

The terrestrial environment around TMINS was examined by i

analyzing samples of milk from six locations en a monthly basis.

Two gallon samples were collected and shipped f resh to RMC. Each a sample was analyzed for 131I using RMC procedure IXD. Quarterly composites from each station were analyzed for e9Sr (SRC) and l '0Sr (SRA)

. The results of 131I analyses are presented in table B-10. One of

the thirty-six milk samples analyzed sncwed detectable levels of 131I. This sample was the control station (1F2) from January and the result was 0.3 0.1 pCi/1. All other results were less than MDL ( 0.1 pCi/1). Concentration of e *Sr and .90Sr in quarterly composites of milk samples are listed in table B-11. Of the
twelve samples analyzed, seSr was detected in none, while '0Sr 3

was detected in 9. Results from~ indicator stations were similar i to those from the control location and all results were similar to preoperaticnal levels.

Direct Radiation j

The ambient radiation levels in the area of Three Mile Island 3

Nuclear Station were determined with energy compensated calcium sulfate (Tm) thermoluminescent dosimeters. A total of 122 monthly TLD packets (4 TLDs each) were placed at twenty-one 4 locations around TMINS. The results of the TLD measurements are

presented in table B-12. All TLD results presented in this repo rt have been normalized to a standard month (30.4 days) to eliminate the apparent differences in data from month to month caused by the differences in exposure periods. The resulting dose rate was similar to preoperaticnal levels averaging 5.38 mrad /standa rd month.

The projected annual dose computed from results for this reporting period is 6 5 meads, or 65 mrem assuming a quality factor of 1. An annual dose equivalent of the order of 62 mrem 12

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was computed for the Harrisburg area and published by the EPAC 11) . The difference between this calculated value and the measured RMC value are not considered significant because of the dif ferences in technique and the statistical variability of each.

The average monthly ambient radiation dose rates for each sampling ring are plotted in figure 3. No trends in ambient gamma radiation levels as a result of TMI-1 operations are apparent from this graph.

ASSESSMENT _OF IMPACT The ga seous and liquid ef fluent streams from TMI-1 were continously sampled and/or monitored for the presence of radioactive materials by Metropolitan Edison Company. The REMP was designed and conducted in a manner to permit identification of the radionuclides actually released from the station. As stated in section 5.6.1 of appendix B of the Technical

- Specifications f or TMI-1, the results of analyses of

' environmental samples showing significantly higher than normal levels should be noted in this report. The term "significantly

? higher" is defined as 25% above background for external dose or

' twice background for radionuclide content. These results are i listed in table 4

' Of the radioactive materials released from TMI-1 to the environs,

! only 3H in surface water showed a statistically significant contribution from TMI-1. Thus, the most important pathway for

! exposure of individuals or of a segment of the populatien to radioactive materials from station operation is from consumption of river water. Since no bio-accumulaticn of 3H occurs in fishC22) the consumption of fish will not significantly add to the dose received. Three locations downstream in the vicinity of

TMINS use treated river water continously f or human consumption.

They are:

+

MILES GAL.  % FOR DCWN- P EOPLE PROC./ HUMAN l STREAM SERVED DAY CONSUM PTION

  • l NAME BRUNNER ISLAND 4 170 3X10* 0. 18 COLUMBIA 16 12,000 2X106 0.20 LANCASTER 17 60,000 8X106 0.24
  • Asumming 1.2 1/cerson/ day consumed I

he Brunner Island and Columbia locations are monitored as part of the REMP. Only once during the reporting period (April) did the observed levels of 3H increase acove background at tnese two stations. This increase corresponded to the release of 3H in liquid effluent from TMI-1 as shown in table 5. The maximum concentration observed in drinking water (Columbia) during tne month of April was 470 pci/1. This average is 230 pCi/l above the preoperatien background level of 240 pci/1. A maximum

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'EBRUARY MAPCH AP RIT, MAY JUNE 14

i I 1e 1

J TABLE 4 ENVIRONNENTAL SAMPLES SIIOWING IIIGilER TIIAN NORMALLEVELS (25% for External Dose - Twice Background for Radionuclide Content)

SAMPLE ANALYSIS BACKGROUND Ol!S ERVED SAMPLING SAMPLING TYl'2 PERFORMED VALUE* VALUE STATION DATE UNITS SURFACE WATER Jil 240 1640 9A2 Janua ry pC1/1 922 9B1 January pCi/l 14500 9A2 April pCi/l 6440 9B1 April pC1/1 481 7G1 April pCi/l 2310 9B1 June pCi/l IT.

  • Background values determined by preoperational averages.

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TAllLE 5 Gi}dL%BIUON OF THITItJM_IN StJHFACE WSTER WITil STAT 10U EFFLilEUT DAIS JANUAl(Y PEllHUAHY MARCil Al'HIL MAY JUNE M'?.est Hiver Flow 44,000 72,000 70,000 46,000 52,000 38,000  :-

Ai ll.t a ri:llits ry (CV:i)

Tot .i t I.i epait! Tritium 0 16 10 140 18 54 f(e ? l e.i:le* s l'o r Monath (s:ias i s :;) e

'I E:stj m.il eil Ailcli tiosi 2.5 3.0 1. 9 41 4,7 39

.n Mont 1:1 y Average

( p(* i /1) p I

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f

r thirty day period involved could have received a dose of 1.7X10-3 mrem from this incremental addition of 3H to the water.

If all individucls drinking water from the three sites mentioned above drank this same water, at 1.2 1/ day, for the same period the population dose would be less than 0.1 person-rem (resulting from 3H discharges f rom TMI-1) .

CONCLUSIONS The preoperational Radiological Environmental Monitoring Program (REMP) conducted by RMC and Metropolitan Edison Company was continued as the operational program af ter TMI-1 initial criticality on June 5, 1974. The REMP (from January 1 through June 30, 1975) described in this report was conducted according to the Environmental Technical Specifications for TMINS which permitted the objectives of the program to be met. Additional sampling and analyses beycnd those required by the Technical Specifications were perf ormed. All results therefrom were reviewed by RMC and Metropolitan Edison to assess all possible environmental pathways. The results of some of these added analyses are reported herein.

Although other pocsible dose pathways to man were considered in the environs of the TMINS site, such as direct radiation, tritium was the only radionuclide of TMINS origin detectable above background levels. The radiation dose to people from ambient gamma radiation, es measured by thermoluminescent dosimeters, averaged 5.38 mrem / month and showed no evidence of a TMIMS I contribution during this operational period of TMI-1. The radiation dose to people in the TMINS environs is compared with the exposure from other artificial and natural sources in the following table:

Source of Excosure . Annual _ Dose in mrem Medical 72(13)

Ambient Gamma (TLD) 65 Radionuclides in body (primarily K-40) 18(13)

Global fallout 4(13?

TMINS (tritium in water) 0.002 I Even though the TMI-1 contribution to population exposure is very

s ma ll (approximately 10-3 % of that from other sources) , the TMINS has a continuing program to improve operating techniques and to i

maintain equipment directed toward reducing releases of j radioactive materials to the environment.

The ref o re , it can be concluded that operation of TMI-1 did not significantly alter the radiological cnaracteristics of the TMINS environs. The radionuclides and radiation levels observed were i

principally due to natural radioactivity and f allout.

17 1448 .343

I REFERENCES i

(1) '

Metropolitan Edison Company. "Three Mile Island Nuclear Station-Technical Specifications." Appendix S. DPR 30, 1972. *

(2) Radiation Management Corporation, "Three Mile Island Nuclear Station-Preoperational Radiological Environmental Monitoring Program, 1973." RMC-TR-75-05 (3) Radiation Management Corporation. "Three Mile Island Nuclear Generating 6tation-Preoperational Radiological Environmental Monitoring Program". RMC-TR-74-17, 1975.

(*) Radiation Management Corporation. "Three Mile Island Nuclear Station-Radiological Environmental Monitoring Program-First Oparational Period." RMC-TR-75-02.

(3) United States Department of the Interior-Geological Survey. " Water Resources Data for Pennsylvania, Part-1."

19'3 (6) Radiation Managerent Corporation. "Three Mile Island Nuclear Generating Station-Agricultural Land Use Survey".

RMC-TR-75-1, 1975.

(7) Metropolitan Edison Company. " Environmental Report, Operating License Stage-Three Mila Island Nuclear Station Unit 1 and Unit 2", 1971.

(8) United States Atomic Energy Commission. " Final Environmental Statement-Three Mile Island Nuclear Generating Station Units 1 and 2". Docket Nos. 50-289 and 50-320, 1972

(*) Metropolitan Edison Company, Jersey Central Power and Light Company, Pennsylvania Electric Company. " Final Safety Analysis Repcrt, Three Mile Island Nuclear Station-Unit 2". Cocket No. 50-320, 1974 (to) Metropolitan Edison Company, Jersey Central Power and Light Company, Pennsylvania Electric Company.

" Environmental Report Supplement II, Three Mile Island Nuclear Station." Docket No. 50-320, February 1975.

(11) Donald T. Oakley, " Natural Radiation Exposure in the United States," U.S. Environmental Protection Agency, ORP/SID 72-1, June 1972.

(12) 5. E. Thompson, C. A. Surton, D. J. Quinn and T, C. Ng,

" Concentration Factors of Chemical Elements in Aquatic Orcanisms." L'C F L-5 0 5 6 4 (Rev.1) , October, 1972.

t3 1448 044

=, . . . -

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3 (13) "The Effects on Populations of Exposure to Low Levels of Ionizing Radiation" (BEIR REPORT) . National Academy of Sciences 1972.

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7 bPPENDIX A Sameling Lccations sam1 2 e Identification RMC identifies samples by a three part code. The first two letters are the pcwer station identification code, in this case TM. The next one to three letters are for the media sampled.

AI = Air Iodine FPL = Green Leafy AP = Air Particulates Vegetables AQF = Fish ID = Immersion Dose (TLD)

AQP = Aquatic Plants M = Milk AQS = Sediment RW = Precipitation E = Soil SW = Surface Water The last four symbols are a location ecde based on direction and distance from the site. of the last four symbols, the first two represent each of the sixteen angular sectors of 22-1/2 degrees centered about the reactor site. Sector one is divided evenly by the north axis and other sectors are n' umbered in a clockwise direction; i.e., 2=NNE, 3=NE, 4=ENE, 5=E, etc. The next digit is a letter which represents the radial distance from the plant:

S = on-site location E = 4-5 miles off-site A = 0-1 miles off-site F= 5-10 miles off-site B= 1-2 miles off-site G= 10-20 miles of f-site C= 2-3 miles of f-site H = >20 miles off-site D = 3-4 miles off-site l

The last number is the station numerical designation within each sector and zone; e.g. 1, 2, . . .

The location portions of these codes (i.e. 1S1, 3A1, etc.) are shown in the attached table along with more detailed information and a map coordinate number used to indicate the sampling locations. This sample identification system is used to designate the individual samples in the analytical result tables, Appendix B.

i 1448 347 23

l -

3 TABLE A-1 EADIOLOGICAL ENVIFONMENTAL MONITORING PROGRAM SAMPLING LOCATIONS LOCATION MAP COEl. ITCT DE.SCRIPTION*

IS2 2 0.4 miles N of site 2S2 4 0.7 miles UNE of site on light pole in middle of North Bridge 2S3 5 0.7 miles NNE of site beside guard house at North Gate 4S2 7 0.3 miles ENE of site on top of dike, East Fence SS3 9 0.2 miles E of site on top of dike, East Fence USl 10 0.5 miles SSE of site at South Weather Station 9S2 12 0.4 miles S of site at South Beach of Three Mile Island llS1 14 0.1 miles SW of site, west of Mechanical Draft Towers on dike 1452 16 0.4 miles WNW of sito at Shelly's Island picnic area 16S1 17 0.2 miles NNW of site at gate in fence on west side of Three Mile Island

4A1 21 0.5 miles ENE of site on Laurel Ud., Met.Ed. Pole 6668-OL sal 22 0.4 miles E of site on north side of Observation Center Building SA2 23 0.9 miles E of site on Zion Rd.- Met.Ed. Pole 12005-LO

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I TABLE A-1 1

l RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM SAMPLING LOCATIONS (Cont'd)

{*

LOCATION MAP COI;E NO. DESCRIPTION *

[

SA3 28 0.9 miles E of site on floover Farm 9A2 27 0.5 miles S of site below Discharge Pipe 16Al 31 0.4 miles NNW of site on Kohr Island 4bl 33 1.1 miles ENE of site, west of Gringrich Road u

  • Sul 34 1.0 mile E of site on Peck Road 783 37 1.6 miles SE of site on east side of Conewago Creek 9B1 39 1.5 miles S of site, above York Ilaven Dam 1001 41 1.1 miles SSW of site on south beach of Shelly's Island 12H1 42 1.6 miles hSW of site adjacent to Fishing Creek 1

j IC1 43 2.6 miles N of site at Middletown Substation i

14C2 45 2.7 miles WNW of site near Intersection of Routes 262 and 392

  1. " 8El 45a 4.1 miles SSE of site at Brunner Island l J>

OO IFl 47 6 miles N of site at llummelstown Substation on Fiddler's Elbow Road l C>

x>

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TABLE A-1 RADIOt.OGICAL ENVIRONMENTAL MONITORING PROGRAM SAMPLING LOCATIONS (Cont'd)

_L.OCATI ON MAP CODE RDT DESCRIPTION

  • 11 2 48 9 miles N of site on Union Deposit Road, west of Iloernerstown SF1 49 9 miles E of site on East Ridge and Greentree Roads 7F1 51 9 miles SE of site at Drager Farm off Engle's Tollgate Road 15F1 53 8.7 miles NW of site at Steelton Municipal Water Works 4G1 54 10 miles ENE of site at Lawn - Met. Ed. Pole IJ1813 7G1 55 15 miles SE of site at Columbia Water Treatment Plant 9Gl 56 13 miles S of site in Met.Ed. York Load Dispatch Station 15':1 58 15 miles NW of site at West Fairview Substation Sill 60 80 miles E of site on HMC roof in Philadelphia Sil2 61 80 miles E of site on HMC roof in Philadelphia

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i 1448 053

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! APPENQIX B Data Tables Appendix B is a presentation of the results of the TMINS Radiological l Environmental Monitoring Program.

IABLE TITLE NUM B ER fv AQUATIC ENVIRONMENT

! B-1 Sampling period for Surface Water Samples t

f B-2 concentrations of Tritium in Surface Water B-3 Concentrations of e'Sr and SoSr in Untreated Drinking Water i

AIR ENVIRONMENT, B-4 Concentrations of Beta Emitters in Air Particulates B-5 Concentrations of Gamea Emitters in Air Particulates B-6 Concentraticns of Icdine-131 in Air B-7 Gross Concentrations and Deposition of Beta Emitters in Precipitation

?

} B-9 Gross Concentrations of Tritium and Gamma Emitters in Precipitation B-9 Concentrations of **Sr and 'OSr in Precipitation

[ TERRESTRIAL ENVIRONMENT I B-10 Concentratiens of Iodine-131 in Milk i

B-11 Concentrations of e'Sr and 'OSr in Milk DIRECT RADIATION B-12 Monthly TLD Dose Rate MINIMUM DETECTABLE LEVELS

- B-13 Typical MDLs for Gamma Spectrometry I

k COW CENSUS B-14 Locations and Numoers of Milk Animals Within 5 Miles of TMINS 6

t e

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33

. L.

TABLE B-1 SAMPLING PERIODS FOR SURFACE WATER SAMPLES STATION NO. JAN FEB MAh APR MAY JUN

'ni-SW- 9 A 2 1-04-75 2-01-75 3-01-75 4-05-75 5-03-75 6-07-75 to to to to to to 1-25-75 2-22-75 3-29-75 4-26-75 5-31-75 6-28-75 TM-SW-931 1-04-75 2-01-75 3-01-75 4-05-75 5-03-75 6-07-75 to to to to to to 1-25-75 2-22-75 3-29-75 4-26-75 5-31-75 6-28-75 TM-SW-8E1* - - -

3-29-75 4-26-75 5-31-75 to to to 4-26-75 5-31-75 6-28-75 TM-SW-ISF1 12-29-74 1-26-75 2-23-75 3-30-75 4-27-75 6-01-75 to to to to to to 1-25-75 2-22-75 3-29-75 4-26-75 5-31-75 6-28-75 TM-SW-7G1 12-28-75 1-25-75 2-22-75 3-29-75 4-26-75 5-31-75 to to to to to to

, 1-25-75 2-22-75 3-29-75 4-26-75 5-31-75 6-28-75

  • Siempling initiated 3-29-75 M

OD C.)

l 1

i

)

TABLE B-2 COtJCENTRATIONS OF TRITIUM IN SURFACE WATER .

Hesults in Units of pCi/l i 2 sigma HAR APR MAY JUN AV ERAGE STATION NO. JAN FEB 293t71 145001147 217176 194177 2850211470 TM-SW-9A2 1670t90 220.73 236171 64401111 214t76 2J06ta9 172014900 1H-SW-9B1 922185 204173

- 370174 162276 <80 204t299 (M-SW-8E1* - -

191173 244171 97172 218176 251177 208:118 TM-SW-ISF1 249t80 149t70 481175 - 214175 186177 239:246 TM-SW-7G1 163t00 243174 4378t12500 205t48 60311900 1137 5910 AV EH AG E 75121400 214145 230t120

  • Sa mpl i ng initiated 3-29-75 M

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TABLE B-3 CONCENTRATIONS OF STRONTIUM-89 AND-90 IN UltrREATED DRINKING WATER Results in Units of pCi/l i 2 sigma START STOP STATION NO. DATE DATE s'Sr 90Sr TM-SW-8E1 03/29/75 - 06/28/75 <1.0 <0. 7 TM-SW-15F1 12/29/75 - 03/29/75 <0.9 0.6t0.4 03/29/75 - 06/28/75 <0.8 < 0. 6 TM-SW-7G1 12/28/75 - 03/29/75 <0.8 <0.6 03/29/75 - 06/28/75 <1.2 0.6t0.5 1448 058 36 m . . . -

I L _ _

s TABLE u-4 CONCD4ThATIONS OF BETA EHITTEHS IN AIk PARTICULATk.S Hesults in Haits of 10-8 goi/m8 a 2 sigma STATION HO.

STAPT STOP TH-AP-1S2 TH-AP-233 TH-AP-8Si TH-AP-5AI TH-AP-12Bt TH-AP-1FI DATE DAT E 38t6 4216 35t6 3616 47t1 4716 12/28/74 - 01/04/75 2)t6 37 6 J116 4117 4117 J646 08/04/75 - 01/11/75

<5+ 62to 4717 7610 7110 6518 01/11/75 - 01/16/75 11:4* 5617 36:19 4216 57t7 8348 01/18/15 -01/25/75 5118 < 27

  • 49:46 2J15 6418 6818 08/15/75 - 02/01/75 2617 6138 6318 5829 8619 02/0l/15 - 02/08/15 3217 46 9 2416 <7* 80t10 44t8 02/0H/75 - 02/15/15 Site 4220 4818 4618 1916 5718 5819

,, 02/l5/15 - 02/22/15 w

9212 1018 5017 '2215 72t8 8419 02/22/15 - 09/0l/75 6 bad 7310 5111 5117 9519 58t7 03/09/75 - 01/06/75 7718 6218 3916 8019 4817 0 8/0H/ 75 - 08/15/75 76 8 4217 110t10 188t10 112:10 03/l5/75 - 01/22/75 90210 82t9 7418 3516 4616 93 9 8819 42" 03/22/75 - 03/29/75 8419 .

f CX3 8719 ** 7618 119:10 129111 128til g_) 08/29/75 - 04/05/75 bd 3016 5217 126111 184111 04/05/75 - 04/12/75 102 10 76t10

~43 170112 14 5 162212 160tt) 150:11 142111 04/11/75 - 04/e9/75 621 0 oSalo ioStii io15 94tio 8et 0 o4/i9/15 - 04/26,,5 j

U219 b5 8 50:n 6313 b419 7419 l 04/2e./75 - 05/0J/13 75 10 2(15 blad 55td 0$/o e/75 - 05/10/15 3 8tb Jd s e, t

TABLE D-4 (Cont ' d) i

.. CONCENTRATIONS OF DETA EMITTERS IN AIR PARTICULATES Results in Units of 10-3 pCi/m3 1 2 sigma START STOP STATIOtt NO.

DATE DATE TM-AP-132 TM-AP-2S3 TM-AP-8S1 TM-AP-5A1 TM-AP-12D1 TM-AP-1F1 05/10/75 - 05/17/75 8419 5819 65tB 7718 88110 5918 05/17/75 - 05/24/75 69t4 7719 2916 2415 4717 6919 05/24/75 - 05/31/75 64t8 6518 58t7 6718 4116 70t8 05/31/75 - 06/07/75 39t6 4117 4416 4616 5418 5427 06/07/75 - 06/14/75 1015 2215 1715 1714 4117 4016 06/14/75 - 06/21/75 24:5 36t5 33t6 3716 4117 35t6 06/21/75 - 06/28/75 1114 4115 3316

$ 18113 4017 3617 AVERAGE 56tS7 62256 50158 51169 74t60 72t63

  • Mechanical failure of sampling device-values not included in averages
    • Sample lost due to severe weather conditions Cs 03 Q

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. .4

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1 TABLE b-4 (Cont'd) cot 3CENTHATIONS OF DETA EMITTERS IN AIR PARTICULATES lieuults in Units of 10-3 pC t /in 8 1 2 s19ma s.

STATION NO.

START STOP TM-AP-15G1 AVERAGE DATE TM-AP-5Fl TM- AP-7 F l TM-AP-9G1 DAT E

~

6418 6017 2424 45125 12/28/74 - 01/04/75 64t8 2125 5017 13t4 33122 01/04/75 - 01/11/75 37 6 6818 5627 2616 58130 01/11/75 - 01/18/75 5317 8919 72 8 4t3* 62137 01/10/75 - 01/25/75 6518 5617 6:27 24t5 52136 01/25/75 - 02/01/75 7318 1815 5717 62 8 52t39 02/01/75 - 02/0u/75 5828 6519 6918 23t7 50139 02/08/75 - 02/15/75 6419 6318 5510 849127 02/15/15 - 02/22/75 5218 5118 10319 115:40 63t8 76t54 02/22/75 - 03/01/75 9019 8419 6517 6tS* 71231 03/01/75 - 03/08/75 8029 6318 7928 ** 64130 03/08/75 ,03/15/75 53t7 6918 169t18 181 17 111285 03/15/75 - 03/22/75 128111 107t10 104:10 4717 77tS2 j 03/22/75 - 03/29/75 97t10

& 122110 10518 3316 132t63 y 03/29/75 - 04/05/75 118t10 1415 120110 8119 83t79 04/05/75 - Ot4/12/75 115110 126113 113:10 177212 139197 O 04/12/75 - 04/19/75 172t14 i CB 34: 12 98t10 95e9 80150

" 04/19/75 - 04/26/75 91111 90211 7718 35st> 69133 0 4 / 2 #./ 7 5 - 05/03/75 7019 l 6017 6418 55 34 OS/0$/75 - 0'2/10/75 7719 6 ttu I

\.

TABLE B-4 (Cont'd)

CONCENTRATIONS OF DETA EMITTERS IN AIH PARTICULATES Results in Units of 10-3 pC1/m8 1 2 sigma STATION NO.

START S'IO P DATE DATE TM-AP-5FI TM-AP-7F1 TM- A P- 9G 1 TM-AP-15G1 AVERAGE 05/10/75 - 05/17/75 7819 6619 84t9 5218 71125 05/17/75 - 05/24/75 7319 <6* 6818 5418 57439 05/24/75 - 05/31/75 81tIO 4013 97t9 7018 65t34 e

05/J1/75 - 06/07/75 45t7 69111 5217 44t6 49110 06/07/75 - 06/14/75 4216 35t7 4816, 15t4 29 20 06/14/75 - 06/21/75 2816- 4817 4316 5117 38:17 06/21/75 - 06/28/75 48t9 2319 3716 40t6 33123 AV EH AGE 75t64 65t61 78t60 57186 64t66

  • tacchanical failure of sampling device-values not included in averages

++ Sample lost due to severe weather condations 4

4 CO C)

N

TABLE D-5 COliCEt3TRATIOt3S OF GAMMA EMITTEh3 Iti AIR PARTICULATES Results in Units of 10-8 pci/m3 1 2 uigma 5-31-75 3-01-75 3-29-75 5-03-75 12-28-74 2-01-75 to to to to to to 5-03-75 5-31-75 6-28-75 2-01-75 3-01-75 3-29-75 STATION tio. 14UCLIDE f

5425 6116 59t6 5616 3322 5614 TM-AP-ItJD* *Be <MDL 0.210.1 0.210.1

<MDL 0.3 0.1

  • Mr. <MDL 4.810.5 2.910.3 1.110.2 5.610.9 6.110.6
  • Szr 4.010.2 5.010.6 3.0to.3 1211 1111 7.840.3 1221 esub 0.210.1 1.410.2 0.710.2 0.410.1 1.240.2 't.510.2 sesau 3.521.0
8. 311.4 7. 31 f . 3 5.741.3 3.211.0 6.011.9 ,
    • Hu 0.410.3 1.210.3 1.0t0.3

<MDL 1.210.4 sa*Sb <MDL 0.920.2 1.320.3 1.910.2 2.3 0.2 1.6 0.2 ares 0.820.I

<MDL

<MDL <MDL 0.710.2 0.810.2 0.610.3 s*sce 8.110.8 2142 tori 1321 1922 s**Ce 8.110.9 <MDL (Mu!. <MDL (M DI, < MD t.

OTHERS <MDb b

4 CO I O CB

[ LM I

I - i .

.l TABLE U-5 (Cnnt 81)

Cot 4CEt4TRATIOtl3 OF GAMMA EM IT Tc.RS IN AIR pal <TICUfAL ES Results i ts Units at 10-8 pCl/m3 1 2 sigma 12-28-75 2-01-75 3-01-75 3-29-75 5-03-75 5-31-75 to to to to to to STATIote tio. t4HCLIDE 2-01-75 3-01-75 3-29-75 5-03-75 5-34-75 6-20-75 TM- A P- D KGD * * 'De 43:5 62 6 95 10 100 10 110 11 96t9

    • Mn <MDL 0.510.3 < Mu t. 0.610.3 <MUL <MDL
    • zr 5.420.9 9.910.9 Ilti 7.910.0 5.821.3 2.110.6

' lib 1111 Ida1 21:2 lasJ 1211 3.910.5

    • 8Ru 1.5t0.6 2.7t0.5 J.0to.9 1.5:0.4 1.010.5 <MDL su'Hu 5.714.7 7.413.4 IJat 1314 9.114.0 5.513.3 saSSb <MUL (MDL <MDL , 2. u 21. 0 3.4 1.1 <MDL a8'es 1.010.2 2.710.5 2.910.8 4 . 210. t> 2.610.5 1.5t0.4 8*8Ce <MDL <HDL < MD t. <MDL <MDL <MDL 8**Ce 1212 2515 3316 34:3 25:3 Ii13

.5>

l 5> urDEks < MDt. <MDL < MD t. < MDI. < Mbl. <Mul.

co p

  • Indicator stattons are I S 2, 232,8 s t , 5A 1, and 12L1 7
    • Background utat ions a re I r l ,7F 1,9 81,151s 1 and SF1 j

TAuLE n-6 .

IN FILTERED AIR SAMPLES I CONCENTRATIONS OF IODINE-131 l Results* in Units of 10-3 pCi/m3 1 2 uirjma

~ ~ ~ ~ ~ ~ ~

-________ STATION HO.

TM-AI-5A1 TM-AI-15G1

  • START STOP TM-AI-1S2 TM-AI-CSI __

DATE DATE -- _ _ __

-__.-___ <10

____ ---_- - __ <11 <11 )

<15 <9 12/2B/74 - 01/04/75 <9

<9 '

<15 01/04/75 - 01/11/75 <11

<8

<8 I'

<10 >

01/11/75 - 01/10/75 <9

<8

<1 ,

<10 01/18/75 - 01/25/75 <8

<8 .

<9 <25 01/25/75 - 02/01/75 <9 (8

<8

<10 02/01/75 - 02/08/75 <10 <10

<9

<10 02/08/75 - 02/15/75 <10

< 10

<11

<10 02/15/75 - 02/22/75 <9 <10 3 <10

<9 02/22/75 - 03/01/75 <14 (9

<11

<9 03/01/75 - 03/08/75 NS (9

<7

<ll

<17 03/06/75 - 03/15/75 <10

< 10

<10

<8 03/15/75 - 03/22/75 <8 <8 (9

~-* 03/22/75 - 03/29/75 <7 A <9

<9 4 <9

<9 CX) 03/29/75 - 04/05/75 <8

<9

<9

<10 c_s 04/05/75 - 04/12/75 <11

< 10

<11 Ch 04/12/75 - 04/19/75 <7 <7 (y, <9

<10

<9 04/19/75 - 04/26/75 <9

<8

<9 04/26/75 - 05/03/75 <10

<9 <9

<9 05/03/75 - 05/10/75 -

p bwS

(

, TABLE B-6 (Cont'd)

CONCENTRATIONS OF IODINE-131 IN FILTERED AIR SAMPLES Results in Unitu of 10-3 pC1/m3 1 2 sigma STATION NO.

START STOP DATE DATE TM-AI-132 TM-AI-8S1 TM-AI-SA1 ,

TM-AI-15G1 05/10/75 - 05/17/75 <9 <9 <9 <10 05/17/75 - 05/24/75 <10 <10 <8 <11 05/24/75 - 05/31/75 <8 <8 <8 <8 05/31/75 - 06/07/75 <8 <8 <9 <9 06/07/75 - 06/14/75 <7 <10 <6 <7 06/14/75 - 06/21/75 <S <S <6 <6

_. 06/21/75 - 06/28/75 <6 <6 <20 <6 4

4 Co Hesults corrected for decay to sampling st'op date 0

f.T Ch

I a

f I

h TABLE D-7 CONCEt:THATIONS OF Bt.TA EMITTERS lti PI(ECIPITATION Results in Units of pCi/1 a 2 sigma

?

3-29-75 4-26-75 5-31-75 1-25-75  ?-22-75

  • 12-28-74 to to to to AVEIL.GE to to 4-26-75 5-31-75 6-2e-M 1-25-75 2-22-75 3-29-75 STATIOl4 NO.

1114 1314 11:10 1914 1214 TM-I<w- U S1 6.713.2 5.613.3 9.313.9 1229 1724 1214 4.323.I 1114 TM-l<u- 5 A 1 1614 list 5.513.4 9.618.2 1344 1314 TM-ku-7P1 1214 3.523.0 1314 8.313.8 1326 1814 1414 1524 1314 TM-Itu- 15G I 9.016.2 1128 1414 1212 1228 6.628.7 1528 AVt24 AGE itETA EMITTER DEPOSITION 1 2 sigma Hesults in Units of nci/m2 r.

m 3-29-75 4-26-75 5-31-75 12-28-74 1-25-75 2-22-75 to to to to AVERAGE g to to 4-26-75 5-31-75 6-28-75 l 1- 25 ';5 2-22-75 3-29-75 STATION Ho. -

l 1.341.8 1.oto.4 2.2to.7 0.6to.3 0.410.2 2.410.6 1.0t0.3 CO TM-14u- tis t 1.J10.5 1.020.7 1.410.4 0.940.2 1.1: 0. 4 TM-Itu- 5 A 1 1.210.3 0.410.3 y 1.110.4 0.9t0.6 1.040.9 d q 0.340.2 1.6t0.4 1.110.3 TM-ku-7F1 0.7 t0. 2 1.640.9 y 1.t,to.5 1.710.6 1.410.6 0.9 0.3 2.Jto.5 TM- l<u- 15G t 1.510.4 1.221.1 1.210.6 1.210.6 1.411.1 0.510.5 1.911.0 AV Lit AGE 1.010.8 i

}

TABLE B-8 CONCENTRATIONS OF TRITIUM AND GAMMA EMITTERS IN PRECIPITATION Results in Units of pC1/1 i 2 sigma ,

I START STOP 7Be 9 5 Zr-N b STATION HO. DATE DATE 3 11 175170 1719 <MDL  !.

TM-Hu-8si 12/28/74 - 03/29/75 d 189177 2616 <MDL 03/29/75 - 06/28/75 138170 3518 2.710.6 (

TM-RW-5A1 12/20/74 - 03/29/75 1 233177 2017 <MDL .

a 03/29/75 - 06/28/75 '

m I

129170 3018 1. 11 0. 6 >

'IM- R W- 15G 1 12/29/75 - 03/29/75

<80 2016 <MDL 03/29/75 - 06/28/75 200170 32112 1.010.6 TM-HW-7F1 12/28/75 - 03/29/75 236177 3019 <MDL 03/29/75 - 06/28/75 4

4 CO O

3 CO f

1

TABLE B-9 IN PRECIPITATION CONCENTRATIONS OF STRONTIUM-89 AND-90 Results in Units of pCi/l i 2 sigma START STOP 90Sr DATE s'Sr STATION NO. DATE

<1.0 <0.8 TM-RW-851 12/28/74 - 06/28/75

<0.9 0.6t0.4 TM-RW-5A1 12/28/74 - 06/28/75

<0.7 0.410.4 TM-RW-7F1 12/28/74 - 06/28/75

<1.4 <1.0 TM-RW-15G1 12/28/75 - 06/28/75 l

i i

I 1

I i

47

.' \1 TABLE B- 10 CONCENTRATIONS OF IODINE-131 IN MILK Results** in Units of pCi/l i 2 sigma STATION NO. 1-25-75 2-22-75 3-29-75 4-26-75 5-31-75 6-28-75 TM-M-SA3 <0.07 <0.07 <0.07 <0.09 <0.05 <0.06 TM-M-4B1 <0.06 <0.07 <0.06 <0.08 <0.04 <0.07 TM-M-SBI <0.07 <0.07 <0.08 <0.1 <0.04 <0.09 TM-M-7B3 <0.06 <0.06 <0.07 <0.08 <0.05 <0.06 TM-M-14C1 <0.06* <0.07 <0.08 <0.1 <0.05 <0.06 TM-M-1F2 0.310.1 <0.06 <0.08 <0.08' <0.05 <0.06

  • Sasiiple collected on 2-01-75
    • AlI results corrected for decay to sampling date M

)

, co O

-J CD

,,,, ne_.

TABLE B-11 CONCENTRATIONS OF STRONTIUM-89 AND -90 IN MILK Results in Units of pCi/1 t 2 sigma START STOP DATE s'Sr SOSr STATION NO. DATE

<1.4 2.4 0.7 TM-M-5A3 01/25/75 - 03/29/75

<2.4 3.8t1.1 03/29/75 - 06/28/75 01/25/75 - 03/29/75 <1.3 1.710.6 TM-M-4B1

<2.1 3.9 1.0 03/29/75 - 06/28/75 01/25/75 - 03/29/75 <0.8 <0.6 TM-M-531

<2.8 1.7 1.3 03/29/75 - 06/28/75

<1.2 1.420.6 TM-M-7B3 01/25/75 - 03/29/75

<1.8 <1.3 03/29/75 - 06/28/75 5

<1.1 <0.8 TM-M-14C1 01/25/75 - 03/29/75

<2.8 7.921.4 03/29/75 - 06/28/75 01/25/75 - 03/29/75 <1.6 2.220.7 TM-M-1F2

<2.5 3.0 1. 2 03/29/75 - 06/28/75 i

y 1448 J71

s m-9 -W e -

. - r-t - , _. a. m _ __ _ m -- v -< .2m_

. .A i

e e a 4 4 A O N e e @ p q A

@ m mN N

  • ag @

O D D 3 4 D @

e e e e 4 N - O N 4 e e e e O - ,

4 A D & e e o e O O O O m a N @ e e e o O O O O O E.

  • * * * * = * * = * * * * * * * * * * =e e* e*

e e O M e e C

e O

o O O O O O O C O

  • D e a mm O I O C N N 7 m n D 4 0 4 &

c e 2 O & M g M 4 e e e 4 l M N N g 4 O e = 4 e e * *

  • e 1 N 4
  • M 4 M. . e e e 4 > D 4 M
  • 4 e e m D e 2 i >

< e e e e e a e e A

e c c a c e o @ i y 2 N M 3 4 # 3 M m m m O O g N D e 4 n ,

o M N N O 9 4 g A N  % e O e e e e e e

'l O e @

N N N 4 3 e e e e o O O O O O r 2 - R -

e e e e e O

e o O O

  • *e *o
  • O O - *N
  • e *.N *
  • * * * * * *
  • e* e* = =

e A e e e o O O O O O m - e

@ O O O N m

& N C C s - - 4 & M 7 2 4

  • 4 C S X 9 e e e e e t - 4 M o C 4 e o e t
  • 03 J 4 7, M 4 m @ e e e e e D O O e .i %

O & e~ O e e o A 3 3 4 I'-

mW N

  • e e e e e e M D e O 3 0 g O O @ @ f .

D Q O 3 I

1 e m 5 I

)

s S 3 4 m J e 2 w O = m O e N 3 N A O A 3 A D 3

  • e e C 1 e C
  • A A

% R w 2 M N 3 3 o e e e o e e O

O - -

I N @ g R e e o e O O C O = O. m e e o e O O O O C.

  • O. m 4 4 O

e e C

e O O m * * = = *

  • D* N *
  • O A N N e
  • 4

&  % m O. O. =

g m 2 3 P & M N 2 {

= U.

  • m N
  • 3 D  % O M e e e e s e e M
  • n
  • 2 a e A

M

  • O o e

[

T Ce s D T A e o e e e f A O D A I

%e m t g N O 4 e e e o e o d A 3 3 N w 1 i e e e a g D g A g f O l i e e D 3 3 Q

g  ? I B

  • I

, i

, m 4  ? A 4

  • O 9

A @

4 S

N 2

N X

2 N

C m

e a

4 e

(n M ,  ! f a e 4 N 4 m

3 M & 4 N 9 &

N. . N. e e e e

- O 9 c I 6 O a N 9 e e e e e e O. O. o. o. m .

< 1 O # f e e e e e e O

O. O. o. o. o.

  • O.

m c 4 e n3 a

  • g o. . O.
  • m z
e. O. o. o. O.

m . > N c - 4 C e 4 a ,i ~,

m, i, O. N 4

  • N 4 7 e N N s N e aN 9

= ceo a. e. e e e a e

f e

c e

- A E t

  • O*N 0s iI =M J 4 e O. N.

a e

e e

a e

e 4  %

e C 8 i . s e e a +

e e . .

4 s e A m c &.

g I

i e e e s l O M O l l J J a } )

a 5 3 e

+ *

  • 5 4 3
  • 3 4 5
  • e 2 N 3 A D  % w 3 I
  • m m
  • N P  %
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e J 6 >J

  • e N R
  • D 3 o e w I 1 3 J M A N
  • A  % D o e e e e e e

- 2 i I - t .% e O s

= w e  % 3 e o e e O O O O. C. .

k Z p

i 8 A # e e O

e e

C e

O.

e o

e

C O.

o= = O C. = =C3 =7 = P

  • 2
  • O' 4

N O.

- N P

O

?

1 D

  • N Q t N  % I C. o. m =

2 m

- - N P A N 4 R 4 N 4 3 e e e e 3 E  : I e i 4 i .1 3

  • O  % D 4 > 3 3 e e e e e e 4  %*
  • 1  ? 3*
  • T C
  • o e e e e e R 4 > b 4 D I N.O F C a e e e e e 3 0 O E w e e i e e e @ e a P 3 i 3 3 0 G

& f N O } ? >

M t i 3 I i 2 #

3 4 t

  • 2 &#

3 5 I

}

t M a P o a m4

  • 2 J N

M

= .* s

=

O sr 's I > O N 9 N 3 e e e 4

-

  • N O 9
  • m 4 e e e e e o N-l - a 4 om . e so 8

l 6 a

  • 9 4 e e e e e o

e O O. o. o. o. o. -s e e e m O. - =  :

5 # 9

  • i =

1 e

o. O. o. . o. o. - . .

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  • T 2 m e. o. C. N = N 3 3 N.

i e

% :o i e i e N

= a o3 =C 4 A N o

C e

N e P.

a e n c s e a r e

N. e e e e u e NwN i .

e e e e e : e %E t e e e e c o &

i i- e N

i e

e a

e a pes- Es o

i

s. w ee f -s4 e

f

. - e o e o - pers e --

t. I. .

e e o e e - 3

- - - N .- .-e -

t e s- = - .- e, N N e e e e i o o - e =- , - e e e -

, , .- i - = ., e N e e N. e e

. = =.

e e e e o c.

= c : o. o.

-c.

e i 3 - e e

o

= = - ,- .- - .- - .- - .- - -3 N e  :

3

  • * . = 1

- - - o. e. - .

= -  : .- n .0 3

, = : e r e : - = e

.-- ,- .- e N

e N ee e e. e. . . e e t

i, N.N - - - e e e e e e. - .- e e O

w e a n .- 4 C L .*

.- .- c e a .-

i i e e e

_~  :~ -

N - . - ..

s

- , e e .- e =

1 -. -

i - - - .- -  : : : :

- N -

< : - - - i- - .- -.' = -t -

s.  : _- .- w-e <- < - e L s

. 5 , N N

2 2 e -

e N

2 - e

- - - a .,

N

~, u, .-

.e 2 - 2 z-s  ; =, ,

. - a; i

- N , .

w-1, -

s - - - . . .

e r  : E r r H r b = H > <+ e

< r e rF r k; - ; ; .- r

rr s= rF er w S
  • s e H

1448 372 r

i - . . . . _

.- a e

e TABLE B-13 TYPICAL MDL8 s FOR GAMMA SPECTROMETRY PRECIPITATION SURFACE AIR WATER PARTICULATES (pci/1)

NUCLIDE (pci/1)

(10-3 pCi/m3) - - _ _ -_

_ _ _ _ _ _ _ 0.3

0. fs 0.3 9.0 22Na 9.0 10.0 84 . 0
  • 0K 's . 0 18 . 0 0.6 5ter 0.6 0.6 0.6
    • Mn 0.6 seCo 0.6 0.7 0.7 0.7 0.7
    • Fe 0.5 2.0 0.7 60Co 2.0 1.0 0.6 6$%n 0.3 5.0 0.6 3.0
u. S$2r'5Nb 5.0 3.0

~ 99Mo 3.0 1.5 0.6 806Ru-506Rh 0.6 0.6 9.0

  • 0'3 Ag 9.0

, 9.0 0.5 i 2 v'"Te 0.5 0.5 0, il J I 0,1

, 0.5 0.6

J2Te 0.6 0.6 0.6 1JJI 0.6 0.6 0.8 13*Cu 0.0 0.6 0.8 I

~~^

  • 36Cs 0.3 0.8 0.6 8J'es 0.8 1.0 fl . 0 a
  • 0 lia 8 4 0 La 2.0 1.0 g '4 . 0
    • Ce 1.0 1.0 2.0 2.0 2e6Ha 2.0 0

'J 232Th u

1

7

= 9 i

TABLE b-84 THINS DISTHlbOTION OF MIt.K COWS WITilIN FIVE MII.ES Of

~

Farm Farm tiumbe r s Farm Farm. Humtmr s of Anamals Di r ec t a osa Distance Direction Dlutance of Animals l 3.8 46 75 ESE u 3.5 ESE 4.3 2J 4.9 1 H

4.5 32 9 ESE h tit 4 E 2.3 SE 1.4 36 tlE 2.3 21 9

SE 4.0 45 HE 4.4 46 SE 4.1 83 HE 4.1 81 35 SS 4.7 46 (

EtJE 1.0 I' SE 4.0 25 >

Eta E 2.5 i l-35 S 3.3 1 f

Et4 E 4.2 SSW 4.9 28

  • Et1E 4.4 84 N g SW. 4.7 4.5 44 Et4E 4.0 1 59 Sbs EllE 4.8 1

1 WSW 4.4 E 0.8 W!aw 2.7 25 E 1.0 65 2.9 5 WrJW E 3.5 28

_. WIJW 3.1 5 ES E 2. 3 25 I

453 3.6 36 I utaw b ESE 3.1 CO 28 WtJW 4.2 3 ES E 3. 2 j

4.9 O ESE 3.6 30 utJW sj e 38 Total t3 umber of Farms 1814 Total taused,er or Milk Ani nt l 3 l

b

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