ML20238A394

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Environ Radiation Monitoring Program,Semiannual Rept 8, Jan-June 1976
ML20238A394
Person / Time
Site: Pilgrim
Issue date: 06/30/1976
From: Andognini G, Cehn J, Gina Davis
BOSTON EDISON CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
76-68, NUDOCS 8708310056
Download: ML20238A394 (57)
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BOSTON EDISON' COMPANY i

PILGRIM NUCLEAR GENERATING STATION' l

Environmental Radiation Monitoring Program '

SEMIANNUAL REPORT NO. 8 JANUARY 1, 1976 THROUGH-JUNE' 30, 1976 Prepared By Joel I. Cehn Environmental Sciences Group Nuclear Engineering Department August 1976 Approved By: ,

G. Ja 's Davi.s, Man'ager Envi nmental Sciences Group ...

8708310056 760630 PDR ADOCK 05000293 R PDR j

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tcW BECo. Ltr. #76-68 BOSTON EDISDN COMPANY Gamsaw Drricts eco Bonerow Stattt ' .

BOSTON. MABEACMUSETTs 02199 August 31, 1976 Director Region I, Inspection and Enforcement U.S. Nuclear Regulatory Commission 631 Park Avenue-King of Prussia, Pennsylvania 19406

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4 Docket No. 50-293' I '

License No. DPR < '

Semi-Annual' Report No. 8 Environmental Radiation Monitoring Program '

Dear Sir:

In accordance with Pilgrim Station Technical Specification 6.9.C.2, we are hereby submitting our eighth Semi-Annual Report. A. separate report i covering Technical Specification 6.9.C.1 and entitled, " Pilgrim l Station  :

Radioactive Effluent Release Report" has been sent under separate cover.

Very truly yours,- i (Original signed by)

G. Carl Andognini Mans.ger 1sk Nuclear Operations' Department Enclosures (2) cc: Director i Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 (20 copies)

Director Office of Management Information and Program Control U.S. Nuclear Regulatory Commission Washington, D.C. 20555 (2 copies)

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I TABLE OF CONTENTS Page Section

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I .. INTRODUCTION AND

SUMMARY

2 II. DESCRIPTION OF MONITORING PROGRAM..............

3 III. MONITORING DATA AND RESULTS....................

3 A. Air Surveillance...........................

4 B. Enternal Gamma Exposure....................

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5 C. Milk.......................................

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'D. Crops......................................

Water............ 5.

E. Domestic and Recreational 5

F. Seawater...................................

6 G. Marine Life................................

6 H. Bottom Sediment............................. ,

8 IV . . SEAFOOD INGESTION DOSES........................

A-1 APPENDIX A

SUMMARY

'OF RADIOACTIVE EFFLUENTS.............

APPENDIX B ANALYSIS OF ENVIRONMENTAL PROTECTION B-1 AGENCY SAMPLES..............................

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I. INTRODUCTION AND

SUMMARY

This report discusses the data accumulated 'by the Environmental Radiation Monitoring Program during the period January 1, through June 30, 1976.

Pilgrim Station operated at 19% of capacity during January and 53% of capacity during June. The unit was shut down for refueling and maintenance from January 29 to June 4.

The Environmental Radiation Monitoring Program was implemented during the reporting period as required by the Nuclear Regulatory Commission. Plant-related radioactivity levels in marine life and sedimento increased from 1975 levels, as did liquid effluent releases to Cape Cod Day. The predominant plant-related radio-nuclides detected in these media were Cs-137 7 Co-60 and Mn-54.

Activity levels of theco.nuclides did not exceed 1 picoeurie per f

gram of sample. The dose equivalent associdted with the maximum activity concentrations detected was calcubated to be less than l 1 millirem per year.for the seafood ingestion pathway. l The only plant-related activity detected in terrestrial media was gaseous radiciodine.

Thiswasdetectedonsiteatlevelslessthanf y I-picocurie,per cubic meter,, Thibradiciodinewasattributedto

., short-term releases which followed the uncovering of the reactor c for refueling.

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DESCRIPTION OF MONITORING PROGRAM II.

The Environmental Radiation Monitoring Program is being per-formed in accordance with the requirements specified in the i l

Pilgrim Facility Operating License (DPR-35). Summaries of the sampled media, sampling locations, frequences of collection, analyses and detection sensitivities are given in Tables 1 through 5A. Sampling locations are shown in Figures 1, 2, 3 and 3A. A more detailed program description is contained in a separate report i i

entitled, " Environmental Radiation Monitoring Program, Program Description and Procedures, January, 1976." The only significant changes to the program during the reporting period were the ,

implementation of sediment coring, as discussed in Section III H, a and the transferral of TLD readout responsibilities from a contractor '

to Boston Edison Company.

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. , i III. MONITORING DATA AND RESULTS 4

This section presents the results of radiological analyses of  ;

samples taken during the reporting period. Counting errors are calculated at the 95% confidence level, that is, two times the standard deviation of the count. Reported "less than" values are generally three times the standard deviation of the background count. The exceptions are nominal "less than" values reported.for milk (Ba/La-140), freshwater (gross beta, gross gamma, I-131), and seawater.

A. Air Surveillance Weekly Air surveillance samples were analyzed for gross beta activity and radiciodine activity. The results are presented in Tables 6, 8 .

i and 8A. The radiciodine levels measured at the " warehouse" onsite location were due to the radiciodine releases resulting from the January 29 shutdown (shutdown spike). Radioiodine detected at various locations in March and May are considered to be statistical fluctuations I

(false positives). Reporting at the 95% confidence level can produce about five false positives in a hundred analyses.

Monthly gross gamma results, and quarterly gamma spectra (composites 1 1

of weekly samples), are presented in Tables 7 and 7A respectively.

These data show lower levels of airborne fallout than reported for the previous reporting periods. This relects the reduction in atmospheric nuclear weapons testing. Long term variations in air-borne radioactivity are shown in Figures 4 and 5.

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B. External Gamma Exposure - . ,

External gamma exposure rates, measured with CaSo4 (Dy) Radiguard 1

dosimeters, are reported in Table 9. The combined exposure for j January and February was the result of replacement dosimeters not being available during January. Beginning in March, responsibility for the readout and calibration of the TLD's was transferred from. 1 Teledyne's Westwood N.J. facility to Boston Edison's General Test' l l

Division. A Teledyne 8300 reader and a uranium-238 calibration source is used for this work. Also beginning in March, errors (+26) were calculated for all results. The average offsite exposure rate measured for April is out of the expected range associated with normal fluctuations. The reason for these higher than expected values has J 4

been traced to calibration drift in the reader. This problem has been I

corrected.

In the previous report, unusually high gamma exposures were reported l for the combined Noveqber and December results at certain on-site locations, particularly OA and WS. The source of these high exposures i

was investigated. A review of plant records showed unusually high radiation levels in the turbine building on the south side of the turbine deck attributable to the temporary storage there of radwaste l casks.' After these casks had been shipped off-site, radiation levels dropped sharply. The elevated on-site exposure levels measured during i

the refueling outage were also ca'/. sed by on-site storage of radwaste t

casks prior to shipment.

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. O C. Milk Milk was sampled from two dairy locations and from a store in Plymouth.

The samples were analyzed monthly for Cs-137, Sr-90, Ba/La-140 and I-131. The results obtained during the reporting period are presented in Table 10. The levels of strontium and cesium measured in Plymouth milk do not exceed the levels measured prior to station operation, )

as shown in Figure 6. Radiobarium and radiciodine levels were below detection limits in all cases.

D. Crops No commercial produce was sampled during the reporting period. The annually-required samples will be collected and analyzed prior to the next report.

E. Domestic and Recreational Water Monthly composites of weekly water samples were analyzed for gross radioactivity and the isotopes H-3, Sr-90 and I-131. The results are shown in Table 12. The results of gamma spectral analyses,'re-quired quarterly, are presented in Table 13. The April South Plymouth sample is being checked for Cs-137 activity by radiochemical separation.

The result of this reanalysis will be reported in a later report.

F. Seawater Monthly samples were taken from the intake channel, discharge canal, and a control location 7.5 miles NNW of the station. These were analyzed for fractional gross beta (explained in Table 14), gross gamma, tritium, and iodine-131. The results of these analyses and of quarterly analyses of intake and discharge seawater for specific radioisotopes are presented in Table 14. The elevated Cs-137 activity i

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detected in the first quarter discharge canal sample is attributable to plant discharges. The detected level of Cs-137 is less than 1/20,000 of the federal regulatory limit for drinking water.

G. Marine Life Finfish, shellfish and algae were sampled during the reporting period.

The results of radiostrontium and gamma spectral analyses are pre-sented in Table 15. The results of analyses of samples from the previous reporting period, not reported in Semi-annual Report #7, are included in Table 15. Trace amounts of plant-related radionuclides ,

(Co-60, Cs-137, Mn-54) were detected in fish, shellfish, and algae during the reporting period. No plant-related activity was detected beyond two miles from the plant. Potential radiation doses to humans resulting from these levels of radioactivity were calculated using NRC Regulatory Guide 1.109. The calculations showed that the doses that could result from the ingestion of seafood containing the highest detected levels of radioactivity, were less than one millirem per year (see Section IV).

l H. Bottom Sediment )

1 Results of analyses of ocean bottom sediments in the vicinity of the l plant are' presented in Table 16. Sediment is sampled at the shoreline 1

with a coring device to approximately 10 in. depth.* Trace amounts of plant-related radionuclides were detected in the vicinity of the discharge canal. Cesium-137 was detected at two locations in Plymouth

  • This revised sampling technique was implemented March, 1976.

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'N l Harbor. This is attributed to weapons testing fallout since (a) the activity, in one case, was five or more inches below the surface,and (b) no other radionuclides which could be attributable to the station were detected. Further coring at these locations is planned.

The sensitivity associated with the earlier sempling (in March) was insufficient to detect Cs-137 at the levels found in the June samples.

Sampling locations not shown in Figure 3A are described as follows:

1) Stage Point, 0.5 mi. SE of Manomet Point, 2) Goose Point, 1 mi.

NE of Kingston Harbor, 3) Plymouth Beach, 1 mi. West of Warren Cove,

4) White Horse Beach, 2 mi. SE of Rocky Point, and 5) Back River, 1 mi . NW of Duxbury Bay.

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IV. SEAFOOD INGESTION DOSES )

Samples of potential seafood taken during the reporting period, and ]

found to contain plant-related radionuclides, were assumed to have been ingested by consumers, and estimations of dose were made. The l l

activities detected in these samples were averaged within each of the three groups: finfish, shellfish and algae. These average activities are shown in Table 17.

Dose calculations were based on NRC Regulatory Guide 1.109 (Issued for comment March 1976). Consumption rates and ingestion doses are presented in Table 17. The computedr. ingestion doses were much less thsn 1 mrem / year to an adult. Liquid releases during the period totaled about 1.7 curies.

i By comparison, the internal dose rate from natural radioactivity ingested and contained in the body is about 25 mrem / year. The radionuclides contributing to this dose are potassium-40, rubidium-87, carbon-14, radium and tritium. The total dose rate from natural sources (internal and external) is about 100 mrem / year.

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Figure 1. Location of Offsite Monitoring Stations O

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I e TABLE 1 TERRESTRIAL SAMPLING SCHEDULE-Number of Medium Frequency Sample Size Locations

  • Domestic Monthly Composites ( liters 4 Water of Weekly Samples Recreation Monthly Composite 4 liters 1 Water of-Weekly Samples All Particulate Weekly 10,000 ft 3 11 and Gaseous Iodine air Gamma Radiation Monthly 4 TLD read- 39 outs per location Precipitation Monthly as collected 1 Lettuce Annually 1,000 grams 3 and Cabbage (June or July)

Corn, Potatoes Annually 1,000 grams 2 and Hay (Aug. or Sept. )

Milk Monthly 2 liters 2 Cranberries Annually 1,000 grams 6 (Sept. or Oct.)

  • Locations are given in Tables 2, 3 and 4.

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TABLE lA MARINE SAMPLING SCHEDULE +

Medium Frequency Sample Size Quantity 1 Irish Moss Alternate months 1 liter dried -1 from each (Chondrus crispus)- location * ,

Blue Mussel Monthly 1 liter 1 from each (Mytulis edulis) April-September location

  • Softshell clam _ Quarterly, . 1 liter 1 from each (Mya arenaria) October-March location *  ;

Quahog Monthly - as 1 liter 1 from each (Mercenaria) available location

  • Lobster Monthly,-

May-October 450 grams 2 from each )

(Homarus americanus) location *  ;

Sediment Quarterly Vertical core 1 from each to 25 cm location

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Groups I & II** Monthly 400 grams 3.from each group .l Groups III & IV Quarterly 400 grams' 5 from each group-Seawater Monthly 4 liters 3 (IC,0C,PP)***

Quarterly 15 liters 2 (IC,0C)

June, July, August 4 liters 2 (beaches)

  • Sampling locations are shown in Figure 3A. Finfish are from station vicinity.
    • Groupings are shown below:

I. Bottom Oriented II. Near Bottom III. Anadromous IV. Coastal Migratory i Distribution j Winter flounder Tautog Alewife Bluefish Yellowtail flounder Cunner Rainbow smelt Atlantic herring Atlantic cod Striped bass Atlantic menhaden Pollock Atlantic mackerel Hakes  ;

      • IC = intake canal. DC = discharge canal. PP m Powder Point, Duxbury.
  • This schedule partially implemented in 1975, to be fully implemented in 1976.

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$ S TABLE 4 TERRESTRIAL SAMPLING LOCATIONS

~l Direction & Distance Refer to Figure 3 ~~

j Medium Location from Unit 1 Reactor Item'a Domestic Water South Pond 4.75 miles WSW 14 Manomet Well 2.75 miles SSE 11 .

Lout Pond 4.75 miles. W. 12 Great Pond

  • 25 miles- WNW 17 .'

Recreation Water College Pond 6.5 miles SW 15 Air Particulate Table 2-3 Table 2-3 ' Figures l'and 2, l, Camma Radiation Table 2-4 Table.2-4 . Figures 1 and 2 .

Precipitation South Pond 4.75 miles WSW- .14 1

'l Lettuce & Cabbage Plymouth County Farm 3.5 miles 'W 13 .

Bridgewater State Farm, 20 miles W 16 Karbott Farm 2.0 miles SSE 9 W'

Hay & Potatoes Plymouth County Farm Bridgewater State Farm, 3.5 miles 20 miles W 13 16

') 1 Corn Plymouth County Farm 3.5 miles. W 13 Robbins Farm. 2.0 miles SSE 9 Milk Plymouth County Farm 3.5 miles W 13 l Peaceful Meadows Farm

  • 21 miles NW 19- l Cranberries Long Pond Road Bog . 4.25 miles SW 8 Beaver Dam Road Bog 2.0 miles S '7 '

I Manomet Pt. Rd. Bog 2.6 miles SE 8 (Figure 1)

Bartlett Rd. Bog 2.75 miles .SSE-S 10 Hall's Bog 0.6 miles SE , '12 (Figure 2)

Pine St. Bog

  • 17 miles ,WNW 18 1

'l.-

j

  • Control locations.

a f

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+1

TABLE 5 ENVIRONMENTAL SAMPLE ANALYSIS PARAMETERS Sample Type IU )

and Number Analysis Frequency Detection Limit Aliquot Air Particulate (7) Gross beta Weekly 4 x 10 ~3 pCi/m 3 10,(180 f t 3 Gross gamma Monthly 2 x 10~3 epm /m 3I*I 10,080 ft 3 131 I weekly 2 x 10 -2 pegj,3 10,080 ft 3 Gaseous Iodine (7) 131 7 Weekly 4 x 10 -2 pegj,3 10,080 ft 3 ,

Nonsaline Water (4) Gross beta Monthly 1 pCi/ liter 1,000 ml l Gross gamma Monthly 5 epm / liter (c) 4,000 ml l Gamma spectrum (e) (d) 4,000 ml 90 1,000 ml Sr Monthly 0.5 pCi/ liter 3

H Monthly 2.5 pCi/mi 4 ml Crops and Gross beta Each Sample 0.2 pCi/g 20 g Marine Life Gross gamma Each Sample 0.01 epm /g ICI 1,000 g I Gamma spectrum Each Sample (d) 1,000 g 90 Sr Each Sample 0.005 pCi/g 100 g Seawater (3) Fractional gross beta Monthly 5 pCi/ liter 500 ml Gross gamma Monthly 5 epm /11ter ICI 4,000 ml Gamma spectrum (e) (d) 4,000 m1 1 3

H Quarterly 2.5 pCi/ml 4 m1 1 90 Sr Quarterly 0.5 pCi/ liter 15,000 ml 137 Cs Quarterly 0.05 pCi/ liter 15,000 ml i 54 Mn Quarterly 5 pCi/ liter 1,000 ml 58 Co Quarterly 5 pCi/ liter 1,000 ml k 60 Co Quarterly 5 pCi/ liter 1,000 ml l 65 2n Quarterly 5 pCi/ liter 1,000 ml 131 I Quarterly 5 pCi/ liter 1,000 ml Milk (2) 90 Sr Monthly 2 pCi/ liter 1,000 ml 137 Cs Monthly 1 pCi/ liter 1,000 mi 140 Ba

)

Monthly 5 pCi/ liter 1,000 ml 131 I l Monthly 2 pC1/ liter 2,000 ml  !

1 Bottom Sediment (1) Gross beta semiannually 2 pCi/g 1g i Gamma Spectrum Semiannually (d) 1,000 g 90 Sr Semiannually 0.005 pC1/g 100 y l Background Gamma exposure Monthly 1 pR/hr 1-month Radiation (19) rate (a) exposure NOTE: Provided by Interex Corp., Natick, Massachusetts  !

l (a) Moasured with thermoluminescent dosimeter.  !

i (b)

(c) In Inthecounterused,1epmcorrespondsto2.2pCio{3 the counter used, 1 cpm corresponds to 9 pCi of

s. "

Cs. j (d) Ge(Li) detection sensitivities are given in Table 5A.  !

(e) Selective gamma analyses are performed based on gross gamma results, with at least j one gamma spectrum analysis each quarter. 1 (f) Numbers in parenthesis are technical specification requirements; actual number of j samples is usually greater than the minimum. j 4

i 21 l

1

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TABLE 5A TYPICAL DETECTION SENSITIVITIES ACHIEVABLE BY HIGH RESOLUTION Ge (Li) GAMMA SPECTROSCOPIC ANALYSIS OF ENVIRONMENTAL SAMPLES Water (1 liter) Solids Filters Nuclide pCi/I (400'gm) pCi/gm pCi/ total filter

]

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?

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La-140 2E+01 4E-02 2E+01 q l

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.. l T7d3LE 9 l EXTERNAL GAMMA EXPOSURE RATES, JANUARY - JUNE 1976 (pR/hr) (a) i l

Onsite Monitoring Jan/

Locations Feb(C) March April Mag June Overlook Area (OA) 23.8 31.6 +4.1 36.6 +5.1 40.8 +4.0 34.2 +2.8 East Breakwater (EB) 9.7 8.2 71.3 7.4 70.9 9.2 74.6 6.4 ~0.7 Emerson Road'(EM) (b) 5.9 70.8 4.9 70.9 8.5 76.0 4.6 70.7 Microwave Tower (MT) 9.1 6.9 70.4 6.1 70.7 10.7 76.2 5.8 70.7 Public Parking Area (PA) 10.6 10.2 71.4 7.9 70.6 9.1 ~6.1 15.6 72.2 Pedestrian Bridge (PB) 22.4 27.2 73.0 19.7 73.1 16.4 72.5 9.9 ~1.7 White Horse Road (WH) 9.1 6.9 70.7 5.7 ~0.7 7.0 70.5 5.3 70.9 Rocky Hill Road (A) 10.4 9.1 70.8 7.7 70.6 11.6 71.8 7.9 70.9 j Property Line (B) 9.8 9.3 71.5 6.7 70.6 10.2 72.2 8.3 ~1.0  ;

Property Line (C) 9.0 8.8 71.1 10.1 ~1.5 8.4 71.3 6.3 70.5 1 Property Line (D) 9.5 8.1 71.5 11.1 71.1 8.7 71.9 8.3 71.0 l Property Line (E) 8.3 6.9 71.5 11.2 72.0 7.6 71.5 5.3 71.1 l Property Line (F) 9.1 6.9 70.6 13.1 71.6 9.0 ~0.8 7.9 71.3 '

Property Line (G) 9.1 8.9 71.2 11.1 71.2 9.3 71.1 8.2 70.8 Property Line (H) 10.5 8.0 70.6 13.0 71.4 9.0 70.8 9.3 71.1 Property Line (I) 8.7 8.3 ~2,1 12.9 71.3 9.1 71.6 8.0 ~1.1 Property Line (J) 7.9 6.7 70.0 11.7 71.5 7.7 ~1.4 5.4 70.7 Property Line (K) 7.7 6.1 71.0 10.4 ~1.1 6.9 72.2 5.2 70.6 )

Property Line (L) 8.7 8.1 71.0 11.9 71.5 10.1 71.0 7.7 70.6 Property Line (PL) 8.8 8.1 71.1 11.5 71.7 7.5 70.8 7.6 ~0.8 Warehouse (WS) 21.5 37.6 75.9 22.7 75.1 24.9 74.6 21.3 ~2.8 )

Property Line (HB) 9.3 7.3 [0.6 12.0 {1.1 7.8 ~10.6 7.1 [0.6 j Average Onsite 11.0 11.1 10.8 12.0 10.9 11.3 11.2 9.4 10.6 Offsite Monitoring )

Locations l College Pond (CP) 10.9 6.3 +1.1 12.1 +1.8 5.3 +0.8 8.6 +0.9 Clef t Rock Area (CR) 8.9 6.2 71.1 11.8 ~0.8 5.1 70.6 9.9 ~0.7 Sagamore (CS) 10.7 7.4 70.8 11.8 71.6 6.4 70.6 12.5 71.5 Rocky Hill Rd East (ER) 9.9 6.7 70.9 13.0 71.4 6.'2 71.3 11.2 71.3 East Weymouth (EW) 9.5 6.7 ~0.7 13.0 71.9 6.1 70.8 10.8 71.2 Kingston (KS) 8.0 5.5 70.5 12.0 71.6 5.0 ~0.8 10.9 71.6 Manomet (MB) 9.5 6.1 70.7 13.0 71.3 (5) 4.9 ~0.6 Manomet (ME) 11.1 8.5 ~0.8 16.4 73.3 7.5 +1.2 6.6 70.7 Manomet (MP) 10.0 6.2 70.8 14.8 72.5 5.9 70.5 4.5 70.7 Manomet Substation (MS) 10.6 7.3 70.8 13.6 71.8 7.6 71.6 5.9 ~0.8 North Plymouth (NP) 10.0 7.3 71.0 13.9 ~1.6 6.3 70.8 5.5 ~0.7 Plymouth Center (PC) 7.7 5.4 70.7 10.3 71.5 5.0 70.8 4.1 70.4 Plymouth Airport (SA) 6.9 5.4 70.9 7.7 70.7 (5) 3.9 70.3 South Plymouth (SP) 8.0 6.6 70.9 8.2 70.8 7.8 +2. 9 4.8 ~0.5 Duxbury (SS) 7.1 6.1 71.3 6.8 70.9 5.9 70.8 4.0 70.4 Rocky Hill Rd West (WR) 10.2 8.5 70.9

~

5.8 70.4 8.5 ~0.9 6.2 71.0 Bayshore Drive (BD) 9.5 6.9 10.8 5.8 {0.9 8.6{2.9 6.4 [0.5 Average Offsite 9.4 6.7 10.4 11.3 10.8 6.5 10.7 7 1 10.4 Las neasurec witn CaSo4 (Dy) Radi-guard dosimeters.

(b) Desimeter stolen.

(c) Lack of error terms discussed in test.

28

- _ _ - _ - _ _ - _ _ _ _ _ __ ._ _ i

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TABLE ld l

PADIONUCT.IDE CONCENTRATIONS IN MILK

  • 1p,Ci/1)  ;

/ , , .

.,- j 1

Collection

/ '

Per19d Plymouth l Analysis _

(1976) (County Farm) Whitman Local Store l Cs-137 January 20 ' w 2 7l+ 1 '

14 + 1 February 11JT 1 12'I 1 15 7 1 i Mar ch 10'T 1 8 G1 12 7 1  !

April 771 "871 971  !

Mav 8 I 1" 8T1 5T1 1 I

Ju'ne 10 T 1 _

2T1 10 T 1

i. ,

Sr-90 January

7+1 5+1 7+1 Embruary 5T1 571 7I1 l March 8T1 8I1 7 I1

, April 571 6[l 4[l May 9+1 _

6+1 4+1 j June (a) (a) 6+1 - l

)

1-131 January <0.3 <0.5 <0.3 February <0 3 <0.4 <0.3 i' March <0.4 <0.5 <0.4 April <0.4 <0.6 <0.3 May <0.4 <0.5 <0.4 June <0 2 <0.5 <0.4  ;

Ba/La-140 January <5 <5 <5 February <5 <5 <5 March <5 <5 <5  !

April <5 <5 <5 l May <5 <5 <5 l

! June <5 <5 <5 i I

l l

l l

(a) Analysis was not completed a+. time report was made.

I l

29

J i .

t TABLE 11 l

RADIOACTIVITY IN CROPS i

(No data was obtained during this reporting period.)

l l

l J

I l

i 30 i

1 i'

4 S .

8 4

TABLE 12 RADIOACTIVITY IN DOMESTIC AND RECREATIONAL WATER Collection- Great Little College Lout Pond Manomet Analysis Date (1976) Pond (a) South Pond Pond Well- Well Gross Beta January. 3.8 +l.0 <l.0 9.7 +1.0 <1.0 <l.0 (pCi/1) February 3.8 T1.0 1.6 +1.0 1.9 T1.0 <1.0 <l.0 March 2.2 T1.0 2.0 T1.0 2.0 T1.0 <1.0 <1.0 April 2.6 T1.0 2.0 T1.0 1.5 T1.0' <1.0 <1.0 May 3.3 T1.0 <170 1.8 T1.0 <1.0 (b)

June 3.6 T1.0 4.6 11.0 <170 1.6 11.0 2.5 11.'O Gross Gamma January <5 <5 6 +5 5 +5 7 +5 (cpm /l) February <5 6 +5 <Y 15 T5 16 T5 March <5 <5 <5 <5 6 T5

  • April <5 <5 <5 15 +5 10 T5 May <5 <5 <5 <5 <F June <5 <5 <5 <5 <5 Strontium-90 January 0.8 +0.5 <0.5 1.0 +0.5 <0,5 <0.5 (pCi/1) February 0.6 70.5 0.6 +0.5 <075 <0.5 <0.5 March 0.5 70.5 '<0. 5 0.9 +0.5 <0.5 <0.5 April 0.9 70.5 <0.5 <075 <0.5 <0.5 May <0.5 <0.5 .

<0.5 <0.5 (b)

June 0.6 10.'5 <0.5 1.4 1 5 <0.5 <0.5 Iodine-131 January <5 <5 <5 <5 <5 (pCi/1) February <5 <5 <5 <5 <5 March <5 <5 <5 <5 <5 April <5 <5 <5 <5 <5 May <5 <5 <5 <5 <5 June <5 <5 <5 <5 <5 Tritium January <60 170 +60 <60 170 +60 130 +60 (pCi/1) February <60 230 T60 <60 190 T60 180 760 March 90 +60 <60 <60 <60 760

' April 260 T60 270 +60 250 +60 125 +60 _ .<60 i May 180 760 200 T60 240 T60 350 760 230 T60 June 220{60 160{50 200 {50- 220 [60 160 {60 l

l (a) Control location.

(b) Aliquot lost. Location was resampled the following month, i

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APPENDIX A

SUMMARY

OF RADIOACTIVE EFFLUENTS This data will be submitted to the Commission in a separate report entitled,

" Pilgrim Station Radioactive Effluent Release Report, January 1, 1976 through June 30, 1976."

1 A-1

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e or

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APPENDIX B RESULTS OF INIERE:X ANALYSES OF DNIRONMENTE Piols. nON j AGENCY SAbPLES l I

i

'lhis appendix reports the results of Interex Corporations's participation in the Environmental Protection Agency's Radionuclides Crosscheck Program.

1 1

'Ihese data are presented in Table B-1. Included in the table is sample I type, analyses perforned, results of each analysis and the average, and the grand average of all participating laboratories. Where the grand average is not available, the EPA value is given. '

i f

i l

l l

l I

I I

H I

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B-1 f

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)

c, a

( 9 9 1

i e) 7 67 17 +_

S d1 38997 4061 E _.

i /

l 1 1

==

877 6 1111 L . cC u p -

P N(

xA C

==

M xA A C s C S

Y C

N )

E b, ) 0 '

1 G a 9 c 1

( ( ) u A e) i c

( ._

d1 72127 07 2726 N i /

l 1 39997 1

481 8 68 35444 08824t O cC up == 111 11 9 911 911 9 9t, I - -

_ T N(

s i A C K == + ,

C C xA r _x, C S c E

T O

R P

1

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B A c.

T ) (

a E N e) d1 b, 8 3 0 9 L E i/ a 6 1 7 1 B (

M l 1 i a 1 a A 1 A N cC up 9444 1 1 39284 t

e995 17 t

e07370 7 9 1 T O N( 81 g 1 3 4c <

3 00100 I 1 111 1 b001 1 9 111 1 b2 2320 55555 3 5 1 1 6

R r == ' s s -

1 I S

s = s ==

_ xA I o o V C _xA r _ =x A r _xA xA

_ N C C C C C G G E

F )

c )

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0 2

(

a 9 4 1 S e) 1 a 9 E d1

) 1 2 h p

a +_ 1 S i / b,6 3 5 1 0 0 0 0 o+ l 455 52 1 h p 0 31 14 31 l 1 a7777 4 7 4 300 a222 22 Y cC up

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==

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1 5

4

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up u /

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s "= = s ==

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==

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- N( - 44444 1 55454 - == - 54345 s

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c

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_xA I

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C C G _

e t

ea l D 5 5 5 5 p 7 7 5 5 7 7 m& r / r / 7 7 r / r /

a e 8 e 8 k / k / e 0 e 3 _

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== s

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up 8687 1 11

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a 7 k / e 5 e 5 9 e 6 S e p

r 2 l 4 t 2 t 1 r 1 t 2 y

i / i / a / a / i / a /

A 6 M 7 W 7 W 8 A 9 M 9 T

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u p N(

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s _ =xC A C s xA C

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)

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c 8 7 (

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xk B

a xk C

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e t

ea 5 5 5 5 l D 7 5 5 7 7 7 p 7 7 / / /

m& / / r / r 7 r 4 r 4 a k 2 k 2 e 2 e 1 e 2 e 2 S e l 1 l 1 t 2 t / t / t /

p i / i / a / a G a 0 a 0 y M 9 M 9 W 8 W W T

1 1 W 1 I

f t*

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l 1 1 1 cC 1 83074 51 4771 up 3 09997 609990 N( 1 1 2111 2

= -

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b c c C (

7 6 ( 0 1

(

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- N( -

xk

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( b 3 ) ( 0

( 2 c 1 e) 7 1 8 (

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RETS MASEB FILA L

BECo. Ltr. #76-68 a B OSTON ColSON COMPANY g / { f I O s.,r es a 6 Orrects B00 Govtstow Swasr?

BOSTON, M AGBACHUGETTE o2199

. I August 31, 1976 -

,Qhll.j co

,Kv ~ (,

Director REC llb%

3gp0 e

Region I, Inspection a'nd Enforcement pk IS/6, j, U.S. Nuclear Regulatory Commission y'#' Q'An na ~

631 Park Avenue N %D h

\

King of Prussia, Pennsylvania 19406 D -

~

Docket No. 50-293 License No. DPR-35 Semi-Annual Report No. 8 Environmental Radiation Lnitoring Progr=

Dear Sir:

In accordance with Pilgrim Station, Technical Specification 6.9.C.2, we are hereby submitting our eighth Semi-Annual Report. A separate report f

.I covering Technical Specification 6.9.C.1 and entitled, " Pilgrim Station Radioactive Effluent Release Report" has been sent under separate cover. l Very truly yours, f f";tstb f xts E

. Carl Andogtrini .

Manager lek Nuclear Operations Department Enclosures (2) cc: Director ,

Office of Inspection and Enforcement U.S. Nuc1 car Regulatory Commission Washington, D.C. 20555 (20 copics)

Director Office of Management Information and Program Control U.S. Nacicar Regulatory Commiosion Washington, D.C. 20555 (2 copien) 8fjd1

~ _ .._..____m

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