ML20141C566
| ML20141C566 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 12/31/1985 |
| From: | Maine Yankee |
| To: | |
| Shared Package | |
| ML20141C559 | List: |
| References | |
| NUDOCS 8604070268 | |
| Download: ML20141C566 (65) | |
Text
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MAINE YANKEE ATOMIC POWER COMPANY ANNUAL RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT January - December 1985 March 1986 p.
Prepared By:
Yankee Atomic Electric Company Environmental Engineering Department 1671 Worcester Road 1- Framingham, Massachusetts 01701 I '
0604070268 960401 PDR ADOCK 05000309 R PDR
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TABLE OF CONTENTS Pago LIST OF TABLES.................................................... iii LIST OF FIGURES................................................... IV 1.0 INTROOUCTI0N...................................................... I 2.0 ENVIRONMENTAL SURVEILLANCE PROGRAM................................ 2 3.0
SUMMARY
OF 1905 ENVIRONMENTAL DATA................................ 13 3.1 Air Particulate............................................. 15 3.2 Charcoal Filter................................... ......... 19 3.3 Milk........................................................ 20 3.4 Mixed Vegetation............................................ 25 3.5 F o od C ro p . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 3.6 Fresh Water................................................. 31 3.7 Precipitation................ ....................... ...... 34 3.8 Estuary Water...................,... ....................... 35 3.9 Marine Algae............................................. .. 38 3.10 Sediment.. .. ...... . ... ... .... .. .. ... ... . . . . 41 3.11 Finfish........... ................. .. .. . .... ...... . . 44 3.12 Mussels.. ............. ............. .............. ... ... 47 3.13 Crustaceans.. ....... .. ... . ... .... ... .. ... .. 50 3.14 Direct Radiation.. .... ... .. . . .. . .... ........ . 53 4.0 QUALITY ASSURANCE PROGRAM......... .... .............. ........ . 55 5.0 MILK COW CENSUS.. ........ ..... .... .......... .. .. . ... . 58 -
6.0
SUMMARY
............. ... . ... ....... ..................... ..... 59 REFERENCES....... .. ....... .............................. ...... 60
LIST OF TABLES Title Pago Number 2.1 Radiological Environmental Surveillance Program............. 3 2.2 Radiological Environmental Surveillance Locations........... 4 3.1 Summary of Direct Radiation Measurements.................... 54 4.1 EPA Interlaboratory and Intralaboratory Results............. 56 5.1 1985 Milk Cow Census Results................................ 58 l
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LIST OF FIGURES Number Title Page
. 2.1 Environmental Radiological Sampling Locations Within One Kilometer of Maine Yankee............................... 7 2.2 Environmental Radiological Sampling Locations Within 12 Kilometers of Maine Yankee............................... 8 2.3 Environmental Radiological Sampling Locations Outside 12 Kilometers of Maine Yankee............................... 9 2.4 Direct Radiation Monitoring Locations Within 1 Kilometer of Maine Yankee............................................. 10 2.5 Direct Radiation Monitoring Locations Within 12 Kilometers of Maine Yankee............................................. 11 2.6 Direct Radiation Monitoring Locations Outside 12 Kilometers of Maine Yankee..................... ........ .............. 12 3.1 Gross Beta Measurements of Air Particulate Filters at Maine Yankee. .. .. .......... ............................ 16 3.2 Cesium-137 in Cow Milk at Maine Yankee...................... 21 3.3 Strontium-90 in Cow Milk at Maine Yankee. ...... .... ..... 22
-iv-
1.0 INTRODUCTION
The Radiological Environmental Surveillance program at Maine Yankee has been designed and carried out with specific objectives in mind. They are as follows:
- To provide an early indication of the appearance or accumulation of any radioactive material in the environment caused by the operation of the nuclear power station.
- To provide assurance to regulatory agencies and the public that the station's environmental impact is known and within anticipated limits.
- To verify the adequacy and proper functioning of station effluent controls and monitoring systems.
- To provide standby monitoring capability for rapid assessment of risk to the general public in the event of unanticipated or accidental releases of radioactive material.
During 1985, as in the past, the Environmental Studies Laboratory (ESL) staff collected the bulk of the environmental samples and processed all environmental thermoluminescent dosimeters (TLDs) for direct radiation measurements. Af ter the initial processing, all non-TLD samples were sent to the Yankee Atomic Environmental Laboratory in Westboro, Massachusetts for further processing and radionuclide analysis.
This report is a summary of the findings of the Radiological Environmental Surveillance Program for 1985. It is being provided in compliance with plant Technical Specification 5.9.1.
_1_
2.0 .EW140NMENTAL SURVEILLANCE PROGRAM In this section, Table 2.1 outlines the surveillance program as required by the plant Technical Specifications. Table 2.2 lists the sampling stations and their specific locations (distances are measured from the center cf the Containment Building). The sampling locations are shown on maps in Figures 2.1 through 2.6.
Below are listed the two-letter media codes and what they represent:
AP Air Particulate CF Charcoal Filter TM Milk WF Fresh Water WP Precipitation, WE Estuary Water TG Mixed Vegetation TF Food Crop SE Sediment FH Finfish MU Mussels CA Crabs (Crustaceans)
HA Lobsters (Crustaceans)
AL Marir,e Algae TL Direct Radiation (TLD) l
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1 Tablo.221 Maine Yankee Radiological Environmental Surveillance Program Media Sampling Frequency Required Analyses Air Particulate (AP) - Weekly Gross beta
- Quarterly Composite Gamma spectroscopy Charcoal Filter (CF) - Weekly Gamma spectroscopy Milk (TM) - Monthly Gamma spectroscopy, I-131, Sr-89/90
- Monthly Composite
- Gamma spectroscopy, S r-8 9/ 90**
- WeeklyM I-131 Mixed Vegetation (TG) - Twice During Gamma spectroscopy, Growing Season Sr-8?/90MM Food Crop (TF) - Annually (Harvest) Gamma spectroscopy, Sr-89/90MW I-131 on green leafy portions of vegetables Fresh Water (WF) - Quarterly H-3, gon+.e spectroscopy
- Once Per 3 Years Ra-720 Precipitation (WP) - Monthly Composite H-3 Estuary Water (WE) - Monthly Composite Gamma spectroscopy
- Quarterly Composite H-3 Marine Algae (AL) - Quarterly Gamma spectroscopy, Sr-89/90MM Sediment (SE) - Semiannually Gamma spectroscopy, Sr-89/90MM Marine Biological - Quarterly Gamma spectroscopy, Media (FH, MU, CA, HA) S r-89/90* M Direct Radiation (TL) - Monthly Integrated gamma dose
- performed whenever plant I-131 releases exceed quarterly limit (Technical Specification 3.17)
Tacio 2.2 Maine Yankee Radiological Environmental Surveillance Locations Distance Station Code Zonew or From Plant Direction Station Description TLD Ring ** (km) From Plant
{ Media - Sta. No.)
Montsweag Brook 2.7 NW AP/CF-11 1 AP/CF-12 Eaton Farm 1 0.5 W Bailey Farm (ESL) 0.6 NE AP/CF-13 1 Mason Steam Station 1 4.8 NNE AP/CF-14 Edgecomb Firehouse 1 5.6 ENE AP/CF-15 AP/CF-16 Westport Firehouse 1 1.8 S AP/CF-17 Harrison's Trailer 1 6.4 SSW AP/OF-28 Bath Substation 2 10.9 SW AP/CF-29 Dresden Substation 2 19.8 N TM-16 Baker Farm 1 7.2 W TM-24 Knight's Dairy 2 9.8 WNW TG-11 Bailey Farm (ESL) 1 0.6 NE TG-12 Eaton Farm 1 0.5 W TG-23 Morse Farm 2 9.8 W TG-24 Dresden Substation 2 19.0 N TF-12 Bailey Farm (ESL) 1 0.6 NE TF-24 Dresden Farm 2 15.6, 14.5 NB'W WF-11 Montsweag Brook 1 2.7 NW WF-12 Wiscasset Reservoir 1 4.6 NNE WF-13 Bailey Farm (ESL) 1 0.6 NE WF-24 Morse Well 2 9.8 W WP-11 Eaton Farm 1 0.5 W WP-24 Dresden Substation 7 19.8 N Plant Intake 1 0.2 E WE-11 WE-12 Plant Outfall 1 0.3 SW WE-20 Kennebec River 2 9.8 SW AL-11 Long Ledge 1 0.8 S AL-12 Westport Bridge, Cowseagan 1 3.2 NNE Narrows AL-23 Boothbay Harbor 2 12.6 SSE SE-12 Area 2 1 0.3 ENL SE-16 Area 6 1 0.4 SW SE-18 Area 8 1 0.7 S SE-29 Doothbay Harbor 2 12.6 SSE
_ e. _
Trblo 2.2 (continued)
Maine Yankee Radiological Environmental Surveillance Locations Distance Station Code Zone
- or From Plant Direction (Media - Sta. No.) Station Description TLD Ring ** (km) From Plant FH-11 Long Ledge 1 1.1 3 FH-12 Plant Intake 1 0.5 ESE FH-23 Edgecomb Bridge 2 6.4 NNE MU-11 Long Ledge 1 0.8 S MU-12 Seal Rock 1 5.0 NNE MU-23 Boothbay Harbor 2 12.6 SSE CA/HA-11 Ferry Crossing 1 1.3 NE CA/HA-12 Cromwell's Dock 1 0.8 SSL CA/HA-13 Harrison's Dock 1 6.4 SSW CA/H A-24 Sheepscot River 2 11.2 S TL-1 Old Ferry Rd. I 1.0 N TL-2 Old Ferry Rd. I O.8 NN, TL-3 Bailey House (ESL) I O.6 NE TL-4 Westport Island, Rt. 144 I 1.2 EN!
TL-5 MY Information Center I O.2 E TL-6 Rt. 144 and Greenleaf Rd. I O.9 E TL-7 Westport Island, Rt. 144 I O.8 ESE TL-8 MY Screenhouse I O.2 SE TL-9 Westport Island, Rt. 144 I O.9 SE TL-10 Bailey Point I O.4 SSE TL-11 Mason Steam Station O 4.8 NNE TL-12 Westport Firehouse I 1.8 S TL-13 Foxbird Island I O.4 SSW TL-14 Eaton 'Fa rm I O.8 SW TL-15 Eaton Farm I O.8 WSW TL-16 Eaton Farm I O.7 W TL-17 Eaton Farm Rd. I O.6 WNW TL-18 Eaton Farm Rd. I O.8 NW TL-19 Eaton Farm Rd. I O.9 NNW TL-20 Bradford Rd., Wiscasset O 6.5 N TL-21 Federal St., Wiscasset O 7.2 NNE TL-22 Cochran Rd., Edgecomb O 8.3 NE TL-23 Middle Rd., Edgecomb O 7.0 ENE TL-24 River Rd., Edgecomb O 7.8 E TL-25 River Rd. and Rt. 27 0 7.5 ESE TL-26 Rt. 27 and Boothbay RR O 7.8 SE Museum TL-27 Barters Island O 7.0 SSE TL-28 Westport Island, Rt. 144, O 7.7 S and East Shore Rd.
TL-29 Harrison's Trailer O 6.3 SSW Table 2.2 (continued)
Maine Yankco Radiological Environmental Surveillance Locations Distance Station Code ZoneM or From Plant Direction (Media - Sta. No.) Station Description TLD Rinq## (km) From Plant TL-30 Leeman Farm, Woolwich O 7.6 SW TL-31 Barley Neck Rd., Woolwich O 6.7 WSW TL-32 Baker Farm, Woolwich O 7.2 W TL-33 Rt. 127, Woolwich O 7.3 WNW TL-34 Rt. 127, Woolwich O 7.9 WW TL-35 Rt. 127, Dresden O 9.1 NYJ TL-36 Boothbay Harbor Fire C 11.4 SSE Staticn TL-37 Bath Fire Station C 10.4 WSW TL-38 Dresden Substation C 19.8 N TL-39 Restricted Cita Boundary **M I 2.2 NNE MZone 1 = Indicator Stations; Zone 2 = Control Stations
- I = Inner Ring; O = Outer Ring; C = Control Station
- Formerly Station TL-(8)
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Figure 2.1 Environrr.cntal Radiological Sampling Locations hithin 1 Kilometer of Maine Yankee l -7 l
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3.0. SUreARY OF 1985 ENVIRONMENTAL DATA The following pages summarize the analytical results of all the snvironmental samples which were collected during 1985. Each environmental media category is presented as a separate subsection. A discussion of the sampling program and results is followed by a table which summarizes the year's data for each category. The tables were generated by the computer program, ERMAP. At the top of each table, ERMAP lists the units of measurement for each medium. The lef t hand column contains the radionuclide which is being reported, total number of analyses of that radionuclide, vnd the number of measurements which exceeds ten times the yearly average background value. The latter are classified as "non-routine" measurements.
The next column lists the Lower Limit of Detection (LLD) for those radionuclides which have detection capability requirements as specified in the USNRC's Branch Technical Position (Rev. 1, 1979) or plant Technical Specifications. (Guidance is not given for many of the radionuclides routinely measured and reported herein.) LLDs equal to or less than these values are achieved greater than 95 percent of the time.
Those sampling stations which are adjacent to the plant and which could conceivably be affected by the operation of Maine Yankee are call.d
" Indicator" or " Zone I" stations. Distant stations, which are beyond plant influence are called " Control" or " Zone II" stations.
ERMr.P calculates a set of statistical parameters for each radionuclide. This set of statistical parameters includes separate analyses for (1) the indicator stations, (2) the control stations, and (3) the station having the highest annual mean concentration. For each of these three grotys of data, ERMAP calculates:
o The mean value of all concentrations including negative values and values below LLD.
o The standard error of the mean.
o The lowest and highest calculated concentration.
o The number of positiva mensurcments (cetivity which is threo times greater than the standard deviation) divided by the total number of measurements.
Each sir.gle radioactivity measurement datum in this report is based on a single measurement and is reported as a concentration plus or minus a one standard deviation uncertainty. The quoted uncertainty term represents only the randoe uncertainty associated with the radioactive decay process (counting statistics), and not the propagation of all possible uncertainties in the cnalytical procedure. Radioectivity is considered to be present in a sample when the concentration exceeds three times its associated standard deviation.
Expressed in another way, the measurement is considered to be statistically different than nornal instrument background when the plus or minus three standard deviation range surrounding the measurement does not include zero.
3.1 Air particulate Air monitoring stations are established at a total of nine locations. Seven of these locations are indicators, while the remaining two are control stations. The air pumps at these locations operate continuously at a flow rate of approximately ono cubic foot per minute. Airborne particulates are collected by passing the air through a fiber filter. These filters are collected weekly and held for at least 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> before being analyzed for gross beta activity (indicated as GR-B in tables) to allow for the decay of radon and thoron daughter products. Weekly composite air filters from each location are analyzed quarterly for gamma emitting radionuclides.
Cross-beta counts (Figure 3.1) show rsndom fluctuations at all sampling locations including controls, thereby indicating that any plant contribution is negligible. For the gamma analyses, no activity was detected at either the indicator or control locations other than naturally occurring Be-7.
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ENVIRONENTAL RAD 10LO3! CAL PROGRAM SLN%W MIE V4EEE ATOMIC POER STATION. h!SCA5tET. T JANJARY - MCEMBER 1985 EDIUM: AIR PARTICLt. ATE LNITS: PC!/CU. M ICICATC6 STATIONS STATICN WITH HIGE ST E AN CLWTROL STATIOG
( 0) ( 6.0 - 35.61E -3 ( 7.8 - 34.4)E -3 ( 7.7 - 36.1)E-3
- (362/3621e *( 52/ 521e *(104/104)*
BE-7 ( 36) ( 5.3t .11E -2 28 ( S.S t .6)E -2 ( 5.2 t 4)E -2
( 0) ( 3.9 - 6.9)E -2 ( 4.3 - 6.9)E -2 ( 3.5 - 6.9)E -2 et 2S/ 26)* *( 4/ 4)* *( 6/ 81*
F-40 ( 36) ( !.ft 4)E -3 17 ( 3.4 * .3)E -3 ( !.! t .9)E -?
( On (-2.1 - 4.9)E -3 ( 2.6 - 4.1)E -3 (-3.4 - 4.21E -3
- ( 0/ 28)* *( 0/ 4)* *( 0/ 6)*
U-fi (29 { -3.2- 1.6tE -4 24 ( 1.s : .51E -3 ( 9.! : 5.4,E -4
( 0) (-2.6 - 1.5)E -3 (-2.4 - 34.0)E -4 (-1.e - 3.4)E -3
- ( 0/ 2?l- C 0/ 4)* *( 0/ S)*
MN-5 (F ( -8.!: 20.!!E -6 M f 7.2 t 2.7)E -5 i 2.4 t 5.0:E -!
( 0) (-3.2 - 2.0)E -4 ( 1.3 - 13.9)E -5 (-2.5 - 2.2)E -4
- ( 0/ 28)* et 0/ 4)* *( 0/ 6)+
CO-55 ( 36) ( -1.52 2.9)E -5 15 ( 1.0 .5)E -4 ( 4.2 t 50.2iE -L
( 0) (-3.t - 4.0)E -4 (-6.6 - 2?!.01E -6 (-2.6 - 2.0)E -4
- ( 0/ 28)* *( 0/ 4)* et 0/ E)*
FE-50 ( 36) ( -2.02 4.3)E -5 2? ( 1.7 t .7)E -4 ( 1.2 t 4)E -4
( 0) (-3.9 - 5.3)E -4 5 1.3 - 36.3lE -5 ( 1.3 - 36.3)E -5 et 0/ 28)e et 0/ 4ls *( 0/ 8)+
CC-60 ( 34) ( -6.33 25.61E -t 25 ( S.5 t 5.9)E -5 ( 2.8 2 4.S!E -!
( 0) (-2.9 - 1.8)E -4 (-3.0 - 257.0)E -6 (-1.7 - 2.61E -4
- ( 0/ 28)* *( 0/ 4)* *( 0/ 6)+
IN-65 ( 36) ( -8.6t 4.8)E -5 12 ( 1.5 t 14.4)E -5 (-1.9 t 1.5)E -4
( 0) (-6.6 - 3.8)E -4 (-2.9 - 3.0)E -4 (-1.0 - .2)E -3
- ( 0/ 28)* *( 0/ 4)* et 0/ 8)*
- MN-ROUTINE REFER 5 TO THE RJMBEF OF SEPEATE MEASLFOENTS WICH WEPE GAEAEF THE TEN (10) TIMES THE A'KW;E BFJOR'JLPC FOR THE PEPIOD OC THE REPORT.
n THE FRACTICt; 0F EMtE MUSES YIELDING DETECIAh.E MEGPEC.%
(I.E. >3 STD DEVIATIOG IS IN2TCMED CH H le.
EWIROMOTAL RADIOLt0ICAL PROGRAM SLMtMY MAINE YAWEE ATOP.IC POWER STATION. WISCASSET. E jap 0ARY - DECDE E 1985 EDILP,: AIP * @TICtLATE LNITS: PCl/C'). M INDICATOR STATICW3 STATION WITH HIGEST EAN CONTROL STATICNS mu+ne***mu* m a te m m *** m u ute m e*++me +e e n RADIONJCt!IES EAN EAN EAN (NO. ANALYSES) RE0JIRED RATE STA. Am0E REE i
(N0 H OUTIE)* LLD NO. DETECTEDu NO. NO. DETECTEDu NO. DETECTED *+
M-95 ( 36) ( 4.8t 4.8)E -5 14 ( 2.3 1 1.8)E -4 (-7.4 t 5.0)E -5
( 0) (-3.5 - 5.3)E -4 (-2.4 - 5.3)E -4 (-2.9 - 1.6)E -4 at 0/ 28)* et 0/ 4)* et 0/ 8)*
RU-103 ( 36) ( -7.62 200.3)E -7 12 ( 3.6 t 8.0)E -5 (-2.8 t 5.5)E -5
( 01 (-2.5 - 1.9)E -4 (-1.8 - 1.9)E -4 (-2.7 - 2.61E-4
- ( 0/ 28)* *( 0/ 4)+ *( 0/ 8)*
RU-106 ( 36) ( 7.5 13.4)E -5 29 ( 4.7 t 5.7)E -4 (-2.9 t 34.9)E -5
( 0) (-1.2 - 1.6)E -3 (-1.2 - 1.2)E -3 (-1.2 - 1.2)E -3
- ( 0/ 28)* *( 0/ 4)e *( 0/ 8)+
C5-15; ( 34; .05 ( !.h 4.7)E -6 17 ( 7.1 t 5. lie -5 (-1.3 2 4;E -4
( 0) (-!.9 - 2.1)E -4 (-1.9 - 2.1)E -4 (-2.1 - 1.8)E -4
- ( J/ 2sie et O! 4ls *( 0/ 8)*
C1-13' ( 50 .0i ( 2.5 1.7:E -5 16 ( S.7 2 3.61E -5 (-2.8 i 3.!!E -5
( 0) (-1.3 - 2.7)E -4 (-1.4 - 14.5)E -5 (-1.6 - 1.5)E -4
- ( 0/ 25)+ *( 0/ 4)+ *( 0/ 8)+
M-10 ( 30 ( 1.41 6.1)E -5 17 ( 3.2 i .5)E -4 (-2.2 i 1.7)E -4
( 0) (-5.1 - 6.7)E -4 ( t.0 - 4.1)E -4 (-1.1 - .3)E -3
- ( 0/ 28)* *( 0/ 4)* *( 0/ 8)*
CE-141 ( 36) ( -8.6t 31.8)E -6 14 ( 9.4 i 15.9)E -5 ( 3.3 t 8.11E -5
( 01 (-2.6 - 5.7)E -4 (-9.0 - 57.0)E -5 (-2.5 - 4.7)E -4 el 0/ 28)* *( 0/ 4)* *( 0/ 8)*
CE-144 ( 34) ( 3.02 73.3)E -6 15 ( 3.9 t .9)E -4 (-5.4 11.8)E -5
( 0) (-1.1 - .6)E -3 ( 2.3 - 6.3)E -4 (-5.5 - 4.3)E -4
- ( 0/ 2S)* +( 0/ 4)* *( 0/ 8,*
TH-232 ( 36) ( 2.6t 1.1)E -4 12 ( 5.9 i 2.9)E -4 ( 2.4 t 2.5)E -4
( 0) (-7.1 - 16.1)E -4 (-2.5 - 10.8)E -4 (-8.2 - 11.3)E -4
- ( 0/ 28)+ *( 0/ 4)* et 0/ Sie e N3N-R7] TINE REFERS TO THE PO9ED Or SEFARATE EASLFEMENTS 6HICH WEPE GREATER TMN TEN (10) TIMES THE A','ELWsE BCC#JL90 FOR THE PERIOD OF THE REPOPT.
++ T4 FRACTION Of SWLE 4A.Y5Ei Y!ELDINO DETECTABLE MEA 3!EEMENii (I.E. >3 ST0 IC!Ai!?O IS ItCICA*ED W!?w o >+.
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3.2 Charcoal Filt rs Charcoal filter cartridges are situated in series with the air particulate fiber filters. Monitoring stations are located at a total of nine stations, seven of which are indicators and two of which are controls. The air pumps at these locations opor<ste continuously at a flow rate of approximately one cubic foot per minute.
Charcoal filters from the nine air sampling stations were collected and analyzed weekly for I-131 activity. No radioactivo I-131 was detected at either indicator or control stations during 1905.
ENVIRONME\7A;. FCIO;.CGICA'. PRMA*, S.Wi MAINE YAWEE ATOMIC POWER STATION. WISCASSET. ME JAN.pf - ICCEFSER IMS PiDilr.: C$R74L FILTER LPilTS: PCl/Ct'. F INDICATM STATICNS STATION WITH HIC 4EST EAN CONTR2. STATI0'G
( 0) (-1.6 - 1.3)E -2 (-1.1 - 1.01E 2 (-1.1 - 1.0iE -2
- ( 0/363)e et 0/ 52)e e( 0/104),
e NON-P1' TINE REFERS TO TE NUP9ER OF SEPARATE htCREMENTS WIO4 EFE REATER T*N TEN (10) TIES TE ,WERAGE BACKC80AD FOR TE PERIOD OF TE REPORT.
ee TE FRACTION CF SMFLE ANALYSES f!ELDING [CTECTABLE NAstREr'4NTS (1.E. >3 STD DEVIATIONS) 15 INDICATED WITH e( le.
3.3 Milk Milk samples were collected and analyzed monthly for Sr-89, Sr-90, low level I-131 and gamma-emitting radionuclides.
Detectable concentrations of Cs-137 and Sr-90 were measured in milk samples submitted from the indicator and control locations.
The mean concentration of Cs-137 and Sr-90 in milk samples from the indicator location was greater by a factor of 4.8 and 4.2, respectively, than the control location (see Figures 3.2 and 3.3). The higher concentration in indicator station samples has been noted for several years and was determined not to be related to Maine Yankee gaseous releases. Maine Yankee measures Cs-137 and Sr-90 in gaseous releases from the plant. Based on these measurements and models used from USNRC Regulatory Guide 1.109 (Reference 1), the expected concentration of these radionuclides in milk from plant releases would be undetectable. This, along with the lack of other plant-related radionuclides, indicates that the measured radioactivity is from nuclear weapons fallout.
It has been shown in previous reports that farming practices (amount of vegetation and type of vegetation that the cows are allowed to feed on) were the cause for the large variations of Cs-137 and Sr-90 concentrations in milk.
Mean concentrations and ranges for the control station and indicator station, for Cs-137 and Sr-90, were similar to those measured for 1984 (Reference 2). Figures 3.2 and 3.3 show that, in general, the concentrations have not changed over the past six years, except for seasonal variations.
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ENVIROMNTAL RADIOLOGICAL PROCM SlW%R7 1%INE YA4'EE ATOMIC POWER STATION WISCASSET. E JANY - DECEMBER 1985 EDI'#: 191LK LMITS: PCI/r0 INDICATOR STATIONS STATION WITH HIG E ST E AN CONTROL STATIONS unnen++n++ne eneenune+nnennne nonun++enn RADIONUCLIIES EAN EAN EAN (NO. ANALY5ES) REQUIRED RANJE STA. RANGE RAWE (N0HOUTIEle LLD NO. DETECTED ++ NO. NO. DETECTED +e NO. DETECTED **
SR-89 ( 24) ( 4.4i 2.4)E -1 16 ( 4.4 i 2.4)E -1 ( 1.6 t 2.6)E -1
( 0) (-9.5 - 17.7)E -1 (-9.5 - 17.7)E -1 (-1.9 - 1.5)E 0
- ( 0/ 12)e *( 0/ 12)* *( 0/ 12)*
SR-90 ( 24) ( 1,32 .1)E 1 16 ( 1.3 i .1)E 1 ( 3.1 i .2)E 0
( 0) ( 8.3 - 17.0)E O ( S.3 - 17.0)E O ( 2.2 - 5.0)E O
+( 12/ 12), *( 12/ 121e et 12! 12)e K-4' ( 24) ( 1.3t .1)E 3 24 ( 1.4 t .01E 3 ( 1.4 t .01E 3
( 0) ( 6.6 - 15.2)E 2 ( 1.3 - 1.6)E 3 ( !.3 - 1.61E 3
- ( 12/ 12)* *( 12/ 121e *( 12/ 12)*
CE-51 ( 24) ( S.12 2E.91E -! 24 ( 2.1 2 2.3)E O ( 2.1 t 2.3)E 0
( 01 (-1.3 - 1.BlE 1 (-1. 5 - 1.2)E I (-1.5 - 1.2)E 1
- ( 0/ 12)+ *( 0/ 121* *( 0/ 12)*
f%-54 ( 24) ( -9.4: 36.4;E -2 16 (-9.4 34.4)E -2 (-1.6 2.4:E -1
( 0) (-3.0 - 1.4)E O (-3.0 - 1.4)E O (-1.3 - 1.4)E O
- ( 0/ 12)* *( 0/ 12)e *( 0/ 12)+
CO-53 ( 24) ( 2.7t 31.0)E -2 16 ( 2.7 1 31.0)E -2 (-1.7 t 3.1)E -1
( 0) (-1.5 - 1.6)E O (-1.5 - 1.6)E O (-2.5 - 1.01E O
- ( 0/ 12)e a( 0/ 12)e *( 0/ 12)e FE-59 ( 24) ( 4.62 4.2)E -1 24 ( !.1 i 9)E O ( 1.1 i 9)E O
( 01 (-2.0 - 2.6)E O (-4.3 - 5.5)E O (-4.3 - 5.5)E O
- ( 0/ 12)* *( 0/ 12)* et 0/ 12)+
CO-60 ( 24) ( -4.12 1.5)E -1 24 (-3.5 t 5.3)E -1 (-3.5 t 5.3)E -1 l ( 0) (-1.5 - .2)E O (-3.0 - 2.5)E 0 (-3.0 - 2.5)E O
( *( 0/ 12)e et 0/ 12)* *( 0/ 12)e ZN-65 ( 24) ( 2.7t 8.8)E -1 16 ( 2.7 t 8.8)E -1 (-1.3 t 1.2)E O
( 0) (-5.3 - 7.4)E 0 (-5.3 - 7.4)E O (-8.7 - 7.5)E O
+( 0/ 12)e *( 0/ 12)+ *( 0/ 12)e
- NON-ROUTINE RErEES TO THE MP3EE Or SEPARATE EA9EEMENTS WIP WERE GREATER THAN TEN (10) TIMES THE AVEDA0E EACKGD?f0 FCA THE PERIOD Or T E REPORT.
n THE FRACTICA CF St.M:_E N' YSES Y!ELCIO DETECTAKE MEA?AEMEt;*:
(I.E. )3 5"c CEVIA'Irrp 15 IN;;tA*ED WITH et le.
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EWIRGm7AL RADIOLOGICAL PROGRAM Slft%RY MAINE LREE ATONIC POWER STATICN, WISCASSET. E JANLGY - KCEMBER 1905 EDILP: MILK LN!TS: PCI/KG INDICATOR STATIONS STATION WITH HIGEST EM CChTROL STATICt;5 unun+ nun +n neuunnennunune +nu++nu++ue RADICNUCl! DES EM EM EM (NO. ANALYSES) REQUIRED RA G STA. RANGE RA E (NON-ROUTINE)+ LLD NO. DETECTED ++ NO. NO. DETECTED ++ NO. DETECTED ++
IR-95 ( 24) ( 9.2t 4.1)E -1 16 ( 9.2 i 4.1)E -1 ( 3.9 t 9.0)E -1
( 0) (-1.4 - 3.7)E O (-1.4 - 3.7)E 0 (-5.1 - 4.8)E O
- ( 0/ 12)* *( 0/ 12)* *( 0/ 12)*
R'J-103 ( 24) ( -1.01 .2)E 0 24 (-3.5 t 3.6)E -1 (-3.5 t 3.6)E -1
( 0) (-2.5 - .1)E O (-2.3 - 2.3)E O (-2.3 - 2.3)E O
+( 0/ 12)+ *t 0/ 12n* *( 0/ 12)*
R'J-106 ( 24) ( -4.92 19.4)E -1 16 (-4.S t 19.4)E -1 (-3.7 t 3.0)E O
( O! (-1.5 - 1.1)E 1 (-1.5 - 1.1)E 1 (-1.9 - 1.5)E 1
+( 0/ 12)* +( 0/ 12)* *( 0/ 12)*
l I-1^: ( 24' O! ( 6.!: 3.2iE -2 li ( d.S 3.2 E -3 ( 3.5 t 4.5)E -5
! 0) (-1.1 - 2.4)E -2 (-1.1 - 2.4)E -2 (-2.4 - 2.9)E -2
- ( 0/ 12)+ *( 0/ 12)* el C/ 12)*
C?-!34 ' 22 '- 15. ( -T 7: 2.1)E -1 24 (-4.2 : 2.61E -1 (-4.2 2.9 E -1
( 0) (-3,0 - .5)E O (-2.1 - 1.2)E O (-2.1 - 1.2)E O
+' 0/ 12)+ *( 0/ 12)* *( 0/ 12)+
C5-137 ( 24) 16. ( 1.2 .1)E 1 16 ( !.3 i .1)E 1 ( 2.7 i .3)E O
( 01 ( 7.? - 15.S)E O ( 7.S - 18.8)E O ( !.3 - 4.7)E O
- ( 12/ 12)+ el 12/ 12)+ *( 6/ 12)+
Ec-14:' ( 24) 60. ( -S.6: 5.S!E -1 24 (-7.5 6.01E -1 (-7.5 6.4)E -!
( Oi (-3.6 - 2.5 E O (-4.1 - 5.2)E O (-4.1 - 5.2)E O
+( 0/ 12)* +( 0/ 12)* *( 0/ 12)*
CE-14: ( 24) ( 4.2: 4.3:E -1 16 ( 4.2 i 4.3)E -1 (-5.5 2 7.61E -!
( 0) (-1.8 - 3.9)E O (-1.8 - 3.9)E O (-5.1 - 3.0)E O
- ( 0/ 12)* *( 0/ 12)* *( 0/ 12)+
CE-144 ( 24) ( 4.3 14.9)E -1 24 ( 5.8 t 15.3)E -1 ( 5.8 t 15.3)E -1
( 0) (-9.5 - 8.7)E O (-6.7 - 11.3)E O (-6.7 - 11.3)E O
- ( 0/ 12)* *( 0/ 12)* *( 0/ 12)+
+ NON-ROUTINE REFERS TO TE N'tTED CF SEPARATE EASUREMENTS WHICH WERE GREATER THAN TEN (10) TIME 5 THE A? ERASE BACK0R1rc FOR THE PERIOD Cr THE REPORT.
er TW FRET!?: ',7 SA9.E W_YIE'. Y: ELD!N) DETECTAB;E EA9FE",E','E
(!.E. S3 STD dei'IA?:0Mi 15 ICICATED W'Tw +t )*.
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3.4 Mixed Veent* tion l
Mixed vegetation samples were collected twice during the growing. j season from four sampling locations. The vegetation consisted of various types of grasses and were analyzed for gamma emitting radionuclides. None were detected other than naturally occurrinij Be-7 and K-40.
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ENY!R0 RENTAL RADIOLOGICAL PROGRAM SLM%RY MAINE YATIE ATOMIC P0WER STATION. WISCASSET. E JANJARY - DECEMBER 1985 EDILr!: MITED WGETATION UNITS: PCl/kt. WET INDICATCR STATIONS STATION WITH HICE ST E AN CONTROL STATICN3 m+mememut n+n+ennun+ee+mm m m ee m ** m RADIONUCLIDES EAN EAN EAN
( W. ANALYSES) REQUIPID RANI STA. RANCE RAWE (NON-ROUTIE)* LLD NO. DETECTED +e NO. W. ETECTEDee W. DETECTED **
BE-7 ( 8) ( 1.7t .9)E 3 23 ( 2.8
- 2.3)E 3 ( 2.3 t 1.1)E 3
( 0) ( 2.7 - 39.8)E 2 ( 5.4 - 51.3)E 2 ( 4.5 - 51.3)E 2 et 4/ 4)* et 2/ 2)* e( 4/ 4)*
K-40 ( 6) ( 5.71 .5)E 3 12 ( 6.4 2 .6)E 3 ( 4.6
- 4)E 3
( 0) ( 4.6 - 7.0)E 3 ( 5.8 - 7.0)E 3 ( 4.0 - 5.7)E 5
- ( 4/ 4)* *( 2/ 2)* t( 4/ 4)+
CF-51 ( 8) ( 1.4 1.9ef a 24 ( 8.4 t 4.9)E 1 ( 3.5 t 4.2)E 1
( 0) (-3.8 - 4.3)E 1 ( 3.5 - 13.3)E 1 (-7.3 - 13.31E 1
- ( 0/ 4)* *( 0/ 2)* *I O! 416 ft* -5; i 8) i 2.?: 0.5;E O 23 ( 1.1 s 4)E I ( 1.E : 5.2!E C
( 0) (-7.1 - 8.0)E O ( 7.4 - 15.2)E O (-2.2 - 1.!:E !
5( 0/ 4)+ *( 0/ 2)+ *( 0/ 4)+
C'-Si ( Si ( 6.3: 1.3)E O 11 ( 7. 4 i 1.11E O t -4. 3 2 4. M E '
( 0) ( 2.6 - 9.0)E O ( 6.8 - 9.0)E O (-1.2 - .31E !
- ( 0/ 4)+ *( 0/ 2)* *( Oi 4)*
FE-52 ( S1 ( -1.1: .8)E 1 23 ( 2.0 t 2.8)E 1 ( 5.1 t 15.1)E O
( 0) (-2.1 - 1.3)E 1 (-7.9 - 48.1)E O (-2.2 - 4.6)E 1
- ( 0/ 4)+ *( 0/ 2)* *( 0/ 41' C0-60 -( 5) ( -2.7 2.1)E 0 24 ( 5.7 t 2.7)E 0 ( 2.5 t 2.21E O
( Oi (-8,5 - 1.4)E O ( 3.1 - S.4)E O (-2.2 - 8.4EO
- ( 0/ 4)* *( 0/ 2)* *( 0/ Al+
ZN-65 ( 6) ( -4.52 15.2)E O 12 ( 9.0 t 9.8)E O ( 7.4 i 9.1)E 0
( 0) (-4.3 - 1.9)E 1 (-7.5 - 188.0)E -1 (-9.2 - 23.2)E O
+( 0/ 4)* *( 0/ 21e *( 0/ 4)+
ZR-95 ( 8) ( 1.7t .7)E 1 23 ( 2.0 t .5)E 1 ( 5.8 t 8.6)E O
( 0) ( 3.8 - 35.9)E O ( 1.5 - 2.5)E 1 (-1.2 - 2.5)E 1
- ( 0/ 4)* *( 0/ 216 *( 0/ 4)*
- WN-ROUTINE RErERS TO THE W.MBER OF SEPARATE EA9.EETNTS WHICH WEPI GREATR TW.N TEN (10) TIMES THE AVEUGE IMGROLND FOR THE PERIOD OF THE PIPORT.
e THE FRACTICt; Or SAM:LE /!&.YSE? YIELDING DE!ECTABLE ME G 5I T Nis (I.E. N STD 0E'.'! !ICt:56 15 INDICATED WITH *t )*.
EWIR04 ENTAL RADIOLOGICAL PROGRM SLM%RY 1%IE YAWEE ATOMIC PGER STATION. WISCASSET, E JANUAliY - DECEMBER 19ES EDilM: MIKED VEGETATION (MITS: PCI/KG ET INDICATOR STATIONS STATION WITH HIGEST EAN CONTROL STATION 5 nunannuun nennuenn*+nnune unenunn**
- RADIOWCLIDES EAN EAN EAN (NO. ANALYSES) REPJIRED RAN3E STA. RAKE RANGE (NON-ROVIIE)* LLD NO. DETECTED ** NO. NO. DETECTED ** NO. DETECTED **
l W-103 ( 8) ( -2.0* 6.1)E O 24 (-9.3 i 16.8)E -1 (-1.2 i 1.3)E 1
( 0) (-1.5 - 1.2)E 1 (-2.6 - .7)E O (-5.1 - .51E 1
- ( 0/ 4)* *( 0/ 2)* *( 0/ 4)*
RU-106 ( 8) ( -1.lt 3.6)E 1 12 ( 4.1 2 3.7)E 1 (-1.1 i 1.7)E 1
( 0) (-!.1 - .8)E 2 ( 3.6 - 78.2)E O (-5.1 - 3.01E 1
- ( O! 41* *( 0/ 2)* *( 0/ 4)*
I-1?! ( 8) ( 1.22 1.0)E 1 23 ( 1.e 4.41E 1 ( 3.5 t 22.6)E O
( O! (-7.5 - 35.8)E O (-2.6 - 4.3)E 1 (-3.8 - 6.3)E 1
- ( 0/ 4)* *( 0/ 2)* *t 0/ 4)*
CS-!?2 f 5: ( -7.0: 4.2:E O 2 ( !.0 2 1.0)E 1 ( 7.4 E.t E :
( 0) (-1.4 - .5)E 1 ( 5.7 - 193.0)E -1 (-5.3 - 19.8)E O
- i 0/ 41+ *! O! 2)+ *( 0/ Al*
C5-137 ( E: ( 7.82 3.4'E 0 12 ( G.' i 3.OE O (-1.0 t 1.I'E 1
( C) (-1.6 - 13.3)E O ( 6.0 - 13.3)E O (-4.0 - 1.1)E 1
- ( 0/ 4)* *( 0/ 2)* *( 0/ 4)*
BA-140 ( 8) ( -9.22 1.9)E O 24 (-4.8 1 39.3)E O (-3.6 i 2.5)E 1
( 0) (-1.4 - .5)E I (-4.4 - 3.5)E 1 (-7.3 - 3.5)E 1
- ( 0/ 4)* *( 0/ 2)* *( 0/ die CE-141 ( 8) ( -2.02 596.41E -2 24 ( !.6 t 4)E 1 ( !.3 t .4)E I
( 0) (-1.0 - 1.6)E 1 ( 1.2 - 2.1)E 1 ( !.9 - 20.9)E O
- ( 0/ 4)* *( 0/ 2)* *( 0/ Al*
CE-144 ( 8) ( 7.62 11.2)E O 24 ( 5.6 2 1.6)E 1 ( 2.6 2 2.3'E 1
( 0) (-1.5 - 3.7)E 1 ( 4.0 - 7.2)E 1 (-3.8 - 7.2)E 1
- ( 0/ 4)* *( 0/ 2)* *( 0/ 4)*
TH-232 ( 8) ( 4.0* 1.6)E 1 23 ( 8.0 t 5.7)E 1 ( 7.6 t 2.61E 1
( 0) ( 1.2 - 8.2)E 1 ( 2.2 - 13.7)E 1 ( 2.2 - 13.7)E 1
- ( 0/ 4)* *( 0/ 2)* *( 0/ 4)*
- NON-ROUTINE REFERS TO THE NUMBER Cf SEFARATE MEAS 1AETNTS Wd!CH ERE GREATER THAN TEN (10) TIMES THE A'XPRE E#1GRCs.PC FOR THE PERIOD OF THE REPORT.
- THE FR / TION OF SAFP.E k.A.YSES Y! ELD:0 DETECTAR E MEAS!?EME'Ti (I.E. >3 STD DEVIATIONT' IS I C ICATED WITH *f )*.
3.5 Food Crop i
Samples of cabbage and potatoes were collected at harvest time and l analyzed for gamma emitting radionuclides. These crops were both sampled from one indicator and one control station. Low level I-131 analyses were also performed on the leafy portion of the cabbage. Other than naturally occurring K-40, no other radionuclides were detected in the samples.
Samples from Station TF-24 (Dresden Fare) were collected from two separate locations in 1985. The potato sample was taken at the Gorenson Farm in Dresden (15.6 km, NNW) and the cabbage sample was taken at the Wilkinson Farm in Dresden (14.5 km, NNW). For simplicity in recordkeeping and reporting, both samples have been listed as TF-24, Dresden Farm (15.6 and 14.5 km, NNW).
1 e
ENVIR0lfENTAL RADIOLOGICAL PROGRAM SUPMARY PAINE YANKEE ATOMIC PGER STATION. WISCASSET. E JANJARY - DEC0 9ER 1995 EDRM: FOOD CRf IHITS' PCI/KG WET ICICATOP STATICNS STATION WITH HIGHEST EAN CONT O L STt.*ICfI n++n u n** m u m unteenuneennen puenennene RADION A IDES EAN EAN EAN (NO. ANALYSES) RE M RfD RANGE STA. RANrE RANCE (N0HOUTIE)* LLD NO. DETECTED ++ NO. NO. DETECTED *e N0. DETECTED ++
BE-7 ( 4) ( 2.01 2.0:E 2 12 ( 2.0 1 2.0)E 2 (3.32 f.3)E 1
( 0) ( 3.4 - 399.0)E O ( 3.4 - 399.0)E 0 (-2.9 - 9.6)E 1
- ( 0/ 2)* e( 0/ 2)* *( 0/ 2)*
K-40 ( 4) ( 3.7t 1.3)E 3 12 ( 3.7 t 1.3)E 3 ( 2.8 t 7)E 3
( 0) ( 2.4 - 5.0)E 3 ( 2.4 - 5.0)E 3 ( 2.1 - 3.6)t 3
- ( 2/ 2)* *( 2/ 2)* *( 2/ 2)*
CR-51 ( 4) ( -3.11 2.1)E 1 24 ( 1.7 t 6.4)E 1 ( !.7 i 6.4)E 1
( 0) (-5.2 - -1.0)E 1 (-4.7 - 8.2)E 1 (-4.7 - 8.21E 1
- ( 0/ 2)* *( 0/ 2)* *( 0/ 2)*
Iti-54 ( 4) ( -3.5 5.4)E O 24 ( 2.1 t 10.1)E 0 ( 3.1 10.11E C 0' (-!.C - 1.C'E O (-6.? - 12.DE C (-1.9 - !?.DE 0
- ( 0/ 2)+ ef 0/ 2)* *( 0/ 2)*
CO-55 ( 41 ( -2.1! 17.2)E O 12 ( ~.1 t 17.2'E O i-4.5 2 5.7)E O
( 0; (-1.C - 1.51E 1 (-1.C - 1.5]E 1 t-1.0 - .!)E 1
- ( 0/ 2)* *( 0/ 21* *( O! 2)*
FE-5? ( 4) ( -2.2t 2.5)E 1 24 ( !.0 t .0)E 1 ( 1.0 t .01E 1
( 0) (-4.7 - .3)E 1 ( 9.5 - 10.2)E O ( 9.0 - 10.2)E O
- ( 0/ 2)* et 0/ 21e *( 0/ 2)*
CO-60 ( 21 ( -1.0: .51E 1 24 ( 4.2 t 3.9)E o ( 4.3 t 3.51E O
( 0) (-1.5 - .5)E 1 ( 4.0 - 61.5)E -1 ( 4.0 - E!.9)E -1
- 0/ 2)* *( 0/ 2)e *( 0/ 2)e ZN-65 ( 41 ( -4.li 3.5)E 1 24 (-5.4 t 11.1)E O (-5.4 t !!.1)E O
(-1.6 -
( 0) (-7.5 - .6)E 1 (-1. f - .6?E 1 .6)E
- ( 0/ 2)* *( 0/ 2)* *( 0/ 2)*
ZR-95 ( 4) ( -2.72 .6)E 1 24 (-1.2 t 3.0)E O (-1.2 t 3.0)E O
-( 0) (-3.3 - -2.0)E 1 (-4.2 - 1.8)E O (-4.2 - 1.8)E O
- ( 0/ 2)* *( 0/ 2)* *( 0/ 2)*
- MON-ROUTIE REFERS TO THE NJMBER OF SEPfeATE EAStJRDENTS WICH WERE GREATER THAN TEN (10) TIE! TE AVEFXA BACKGROUC FOR TE PERIOD OF THE REPJT.
- TE FRACTION (f SAMPLE ANALYSES Y!ELDING DETECTABLE EASURETNTS (I.E. >3 STD DEVIATIOC !! ICICATED WITH H !*.
ENVIRMENTAL RADICl(CICAL PRTRA9 SlffGRY MIE YAWEE ATOMIC POWER STATION, WISCASSET. E JANUARY - DECEMBEL 10E5 EDILrt. FOOD CROF UNITS: PCI/KG WEi INDICATOR STATIONS STATICW WITH HIOE ST E AN CONTR9L STATICf3 num**mem mmmemmenume mmmump RADIONUCLIES EAN EAN Eid.
(NO. AMLYSES) RE7JIRED RANI STA. RAEE RACE
( O H UJTINE)* LLD NO. DETECTEI4e f(). NO. DETECTEI4+ NO. ETECTED++
RU-103 ( 4) ( 1.42 1.7)E 1 12 ( 1.4 2 1.7)E 1 ( 1.2 2 .11E 1
( 0) (-3.1 - 31.8)E 0 (-3.1 - 31.8)E 0 ( 1.1 - 1.3)E 1
- ( 0/ 2)e *( 0/ 2)* *( 0/ 2)*
RS106 ( 4) ( -1.4t 3.0)E 1 24 ( 8.2 t 66.6)E O ( 8. 2 t 66.6)E 0
( 0) (-4.4 - 1.6)E 1 (-5.6 - 7.5)E ) (-5.8 - 7.5)E 1
- ( 0/ 2)* *( 0/ 21e of 0/ 2H 1-131 ( 4) 60. ( 2.2: 2.3)E 1 12 ( 2.2 t 2.3)E 1 (-1.2 2 1.2)E
( 0) (-9.6 - 444.0)E -1 (-9.6 - 444.01E -1 (-2.4 - .0)E 1
- ( 0/ 2H *( 0/ .2)e *( 0/ 2)e CS-134 ( 41 60- ( -3.et 7.6)E O 24 ( ?.6 t 4.5)E O ( 3. A t 4.5)E 0 i Gi (-1.1 - .5:E ! (-5.4 - 8'.:)E -1 t-i.c - E , .' . E -1
- ( O! 21e *( 0/ 2H et 0/ 2)e C3-137 ( 41 BC .- ( -1.22 6.2)E O 24 ( 1.4 i 7.0)E O ( 1.4 t 7.0'E C E
( Oi (-4.5 - 7.01E 0 (-5.e - S.4:EO (-5.6 - i.4]E C et 0/ 2)e *( 0/ 2n *( 0/ 21e BA-145 ( 4) ( 2.St 3.3)E 1 12 8 2.9 i 3.3)E 1 (10.0 t 1450.0)E -2
( 0) (-4.3 - 61.6)E O (-4.3 - 61.6)E O (-1.4 - 1.5 E 1
- ( 0/ 2H ef 0/ 2)* et 0/ 2H CE-141 ( 4: ( 6.1 4.5lE O 24 (S.72 16.0!E O ( 9.7 t It.0)E 0
( 01 ( 3.6 - 12.6)E O (-6.3 - 25.7)E O (-6.3 - 25.7)E O
- ( 0/ Ile *( Oi Ole et 0/ 2ie CE-144 ( 4) ( -1.et 2.2)E 1 24 (-9.5 t 2.3)E O (-9.5 1 2.3)E O
( 0) (-4.6 - 1.0)E 1 (-1.2 - .7)E 1 (-1.2 - .7;E 1
- ( 0/ 2)* st 0/ 2H et 0/ 2)*
Tu-232 ( 4) ( !.7t .1)E 1 24 ( 3.4 i 1.9)E 1 ( 3.4 t 1.f)E 1
( 0) ( 1.6 - 1.8)E 1 ( 1.7 - 5.2)E 1 ( 1.7 - 5.2)E 1
- ( 0/ 21e et 0/ 2H et 0/ 21e
- NON-ROUTINE REFERS TO TE NLP!BER OF SEPARATE TASUREENTS lAICH 60f CREATER TAN TEN (10) TIMES TE A'KrGE BAOCMtX FCF THE PERIOD CF THE FiP09T.
n TE FRACTION Cr SAMPLE ELYSES VIELDIO DETECTABLE EASLFEMD'TS (I.E. )3 STC. CCVIAT!OW ) li IC :CATED W:Ts *' )*.
3.6 Fresh Water Fresh water grab samples were collected from three indicator and one control station on a quarterly batis. These samples were analyzed for H-3 and gamma emitting radionuclides. The results show that there were no radionuclides detacted in fresh water
, samples during 1985.
0 I
e ENVIR0pMENTAL RADIOLOGICAL PROGRAM SIM9RY MAINE YAKEE ATOMIC PWER STATICW, WISCA? SET. E JANUARY - DECEMiG 1985 EDIUM: FRESH WATER UNITS: PC!/KG INDICATOR STATIONS STATION WITH HIOEST EAN CCNTROL STATIOE ennenannuu ee new ++ wen e+e ne n en enunu++uen RADINLCLIES EAN EAN EM (NO. AfMLYSES) REQUIRED RANE STA. RANGE RANGE (NDHOUTIE)* LLD NO. DETECTEDee W. W. ETECTEDee NO. DETECTER +e E-7 ( 16) ( 1.it 2.4)E 0 12 ( 7.7 i 5.8)E 0 ( 2.1 t 2.4)E O
( 0) (-7.8 - 22.4)E 0 (-5.4 - 22.4)E 0 (-3.1 - 8.4)E 0
- ( 0/ 12)* *( 0/ 4)* et 0/ 4)e K-43 ( 16) ( -5.2t 30.5)E -1 12 ( 6.0 t 6.3)E 0 ( !.0 t 6.1)E O
( 01 (-1.6 - 2.2)E 1 (-7.6 - 22.01E O (-1.4 - 1.6)E 1
- ( 0/ 12), *( 0/ Ale *( 0/ Ale Cc-5! ( 16) ( -3.6t 3.1)E 0 24 ( 4.0 t 24.2)E -1 ( 4.0 t 24.2)E -1
( 0) (-2.1 - .8)E 1
(-4.2 - 7.1)E O (-4.2 - 7.1)E O
- ( 0/ 12)* *( 0/ 4)* *( 0/ 4)e F.'.- ! ( lt) 15. 8 -1.12 2.5)E -1 11 ( t.6 2 53.7:E -2 M. 2 1.c E -;
( 0) (-1.5 - 1.5)E O (-6.4 - 15.3)E -1 (-7.0 - 2.1)E -1
- ( 0/ 12)* et 0/ 4)e et 0/ Ale CO-!d ( 161 15. ( -3.72 2.2)E -1 12 ( 2.5 t 24.0)E -2 (-4.? 2 3.3)I -1
( 0) (-2.6 - .6)E O (-4.2 - 6.2)E -1 (-1.2 - .4)E 0
- ( 0/ 12)e *( O! Als *( 0/ Als FE-5c ( 16) 30. ( 2.02 7.1)E -1 12 ( !.0 i 1.3)E O (-1.4 2 1.t'E O
( 01 (-4.7 - 3.7)E O (-2.9 - 2.9)E O (-4.5 - 2.7)E O e( 0/ 12), *( 0/ 4)e *( 0/ 4),
C0-60 ( 16' 15. ( -5.32 3.6)E -1 !! ( 8.9 i 62.9)E -2 (-3.3 t 5.1)E -i
( 01 (-3.2 - 1.9)E O (-1.1 - 1.9;E 0 (-1.2 - 9)E O
- ( 0/ 12)e et 0/ 4)* et 0/ 4)*
IN-65 ( 16) 30. ( -7.41 7.0)E -1 24 ( 1.0 t 7.5)E -1 ( 1.0 t 7.51E -1
( 0) (-6.5 - 2.5)E 0 (-9.9 - 21.7)E -1 (-9.9 - 21.7)E -1
- ( 0/ 12)* *( 0/ 4)* *( 0/ 41e IR-95 ( 16) 30. ( 1.7t 3.9)E -1 11 ( !.2 g .8)E O (-1.1 i .8)E 0
( 0) (-1.5 - 3.3)E O (-2.4 - 33.1)E -1 (-3.1 - .3)E O
- ( 0/ 12)* H 0/ 4)e *( 0/ 4)e e NON-ROUTINE REFER 5 TO THE ffMER (F SEPMATE MEA 9JREENTS WK!CH WERE GREATEF THM TEN (10) TIMES THE AVERAGE BACr0ROUND F0F. TK PERIOD OF TE REMFi.
++ THE FG?!0N 07 SA%E M.YSES VIELDIP6 DETECTAR.E MEAS'FE" ENTE (I.E. >3 STD DEV!ATIC*G) IS IN5!CATED WITH H )*.
ENVIR010 ENTAL RADIOLOGICAL PROGRAM SLPPAR)
MA!E YAftIE ATOMIC P(WER STAT!CN. WISCASSET. ME JAf0ARY - DECD9ER 1985 EDilm FRESH WATER LNITS: PC:/r0 INDICATOR STATIONS STATION WITH HIGEST EAN CONTROL STAT!@6 m e w++ w m u m n u +e n u m *++ w m m e umm+num Rp*.ONllCLIKS S G H A0. ANALYSES) M IRED RAf0E STA. R40E RAPCE 00H10UTIE)* LLD NO. DETECTED ** NO. NO. DETECTED ** NO. ETECTEDe*
lill-103 ( 16) ( -1.lt .4)E 0 12 (-7.3 1 9.6)E -1 (-1.1 i .41E O
( 0) (-3.1 - 2.0)E 0 (-2.5 - 2.0)E O (-1.7 - .1)E O
- ( 0/ 12)* *( 0/ 4)* *( 0/ 4)*
Rlkl06 ( 16) ( 2.02 15.7)E -1 12 ( 3.7 t .7)E O ( !.2 .9)E O
( 0) (-1.3 - .6)E 1 ( 1.5 - 4.6)E 0 (-7.4 - 34.5)E -1
- ( 0/ 12)* *( 0/ 4)* C 01 4)*
I-131 ( 16) 1. ( 5.22 5.3)E -1 13 ( !.2 t 1.2)E O (3.12 16.1)E -1
( 0) (-1.9 - 3.1)E O (-1.9 - 3.1)E O (-3.5 - 4.4)E O
- ( 0/ 12)* *( 0/ 4)* *( 0/ 4)*
C5-132 ( !!! 15. ( -2.7f 2.S)E -1 13 ( 7.1 2 3.4)E -1 ( !.2 2 4.1:E -:
( 0) (-1.5 - 1.4)E O (-1.7 - 14.2)E -1 (-5.9 - 12.7)E -1 et 0/ 12)* *( 0/ 4)* *( 0/ 4)*
C5-IS7 ( 161 !!. ( -3.h 4.0)E -1 12 ( 6.2 t 6.11E -1 (-2.0 t e.7)E -1
( 0) (-3,0 - 2.2)E O (-7.9 - 21.0)E -1 (-2.0 - .9)E O
- ( 0/ 12)* *( 0/ 4)* *( 0/ 41' 5A-140 ( 16) 60. ( -3.St 4.1)E -1 11 ( 6.1 2 2.4)E -1 (-2.0 t 6.9)E -1
( 0) (-3.0 - 1.1)E O ( 1. 8 - 11.2)E -1 (-2.0 - 1.31E 0 e; 0/ 12)e *( 0/ die of 0/ 4)*
CE-141 ( 16) ( 2.2! 40.6)E -2 24 ( !.2 * .6fE C ( !.2 t .6tE C
( 0) (-2.5 - 2. die O ( 2.2 - 29.1)E -1 ( 2.2 - ??.1)E -1
- ( 0/ 12)e *( 0/ die *( 0/ 4)*
CE-144 ( 16) ( 6.52 16.6)E -1 12 ( 5.0 t 3.4)E o ( 2.6 1 3.21E O
( 0) (-7.9 - 14.6)E O ( !.6 - 146.0)E -1 (-2.9 - !!.4)E O
- ( 0/ 12)* *( 0/ 4)* *( 0/ 4)*
H-3 ( 16) 2000. ( 1.2t 3.3)E 1 11 ( 5.3 t 6.9)E 1 (-6.8 t 10.9)E 1
( 0) (-2.1 - 2.0'E 2 (-1.2 - 2.01E 2 (-3,0 - 1.5)E 2
- ( 0/ 12)* *( 0/ 4)* *( 0/ 4)e e NON-ROUTINE REFERS TO THE PfrBER OF SEPAU.TE EASLREMENTS WICH WEPI CAEATU T%N TEN (10) TIMER THE A'.'ER4*{ FCOROLND FOP THE PER!OD Or THE REPC(T.
- THE FFA2710N OF SEE A% LYSES Y!ELDIO DETECIABLE MEA?4EME'N (1.E. >3 STD KVIATI0H) IS INDICT.*ED W'TH e f it.
3.7 Precipit-ti'n Precipitation samples were collected and analyzed for H-3 monthly during 1985. No H-3 was detected in any of the indicator or control stations.
EWIROMENTAL RADIOLOGICAL PRO @AM SLPM*Y MA!E YAIREE ATOMIC POER STATION. WISCASSET. E JANUARY - DECD9ER 1%4 ED!Let: PRECIPATION UNITS: PCI/KG INDICATOR STAT!0N3 STATION WITH HIGl(ST E AN CalTROL STAT!043 e***enunemm um unnennennun nonunmuu RADIONJCLIIES EAN -
EE eta
( W. ANALYSES) RE@)! RED RANGE STA. RANGE RAKE (NON-RTTINEle LLD O. DETECTEDie K. Kr. DETECTED n N'. DETECTECH H-3 ( 24) 2000. ( -6.1 4.3)E 1 24 (-4.0 t 4.11E 1 (-4.0 t 4.1)E 1
( 0) (-2.9 - 1.8)E 2 (-2.1 - 2.8)E 2 (-2.1 - 2.f)E 2
- ( 0/ 12)* et 0/ 121e *( 0/ 121e e NON-R0lfT!NE PEFERS TO TE TUGER OF SEFreATE EASLREENTS IMICH WERE GREATEP TMN TEN (10) TIMES THE AWRA0E BAtrCRy.N? FOR THE PERIOD OF TE REP 0FT.
- THE FFET!0N OF SAMPLE (4FiYSES Y!ELDIO CETECTABLE EASLREENTS (f E. >3 STD CEVIAT!ES) IS INDICATED W'ni *( 18
.34_
3.8 Estuary Water Estuary water is analyzed monthly for gamma emitting radionuclides and quarterly for H-3. The two indicator stations have composite samplers from which samples are collected on a monthly basis.
Weekly grab samples are taken from the control location. All of the weekly samples are composited at the laboratory and analyzed monthly. All monthly samples are composited for quarterly H-3 analyses. No gamma-emitting radionuclides were detected in the estuary water samples for 1985, other than naturally occurring K-40.
H-3 was detected at Station 12 (plant outfall) in the first and fourth quarter composite samples at 570 i 150 pCi/kg and 5601 150 pCi/kg, respectively. These samples are collected in the discharge forebay and do not represent actual environmental levels. When a dilution factor of 10 is applied to estimate environmental levels after passing through the diffusers in the Back River, the concer trations would be one tenth of the above values. These levels would not be detected when analyzed to currently required LLDs. No direct correlation was noted (with respect to time) between these measured levels and the H-3 levols measured in the plant liquid effluents.
There is no likelihood that the calculated levels of H-3 in the environment would lead to public intakes in excess of one percent of those that could result from continuous exposure to the concentration values listed in Appendix B, Table II of 10CFR20.
EWIROMENTAL RADIOLOGICAL PR00RM SlMtEY MAIE YAftIE ATOMIC POWER STATION. WISCASSET. E JANUARY - DECEMBER 1985 EDRP: ESTUARY bATER LMITS: PC1/KG Il01CATOR STATION 5 STATION WITH HIGEST EM CONTROL STATIONS
BE-7 ( 36) ( 2.2i 1.5)E 0 12 ( 2.7 t 2.7)E 0 (-3.2t 2.01E 0
( 0) (-1.1 - 1.7)E 1 (-1.1 - 1.7)E 1 (-1.5 - .8)E 1
- ( 0/ 24)* *( 0/ 121e *( 0/ 12)*
K-40 ( 36) ( 2.41 .1)E 2 11 ( 2.4 t .2)E 2 ( 3.6 t .8)E 1
( 0) ( 1.0 - 3.3)E 2 ( 1.0 - 3.31E 2 (-1.6 - 9.21E 1
- ( 24/ 24)* et 12/ 12)e et 5/ 12)e CR-51 ( 36) ( 2.S: 16.6)E -1 11 ( 2.5 t 2.2)E O (-1.2 t 2.1)E 0
( 0) (-1.1 - 1.9)E 1 (-8,5 - 14.6)E O (-1.4 - 1.2)E 1
- ( 0/ 24)e *( 0/ 12)* et 0/ 12)e m-54 ( 36) 15. t -6.0: 15.7)E -2 !! ( 1.5 t 1.3)E -! ( !.T 2.2iE -1
( 0) (-2.0 - 1.1)E 0 (-6.2 - 10.4)E -1 (-9.9 - 13.61E -1
- ( 0/ 24)* *( 0/ 121e et 0/ 12)e CD-F ( 36) 15. ( -4.22 1.7)E -1 . (-1.6 t 3.5)E -1 (-1.6 2 2.PE -!
( 01 (-2.3 - 1.3sE O (-2.3 - 1.2)E O (-2.3 - 1.2)E O e( 0/ 24)* e( 0/ 12)* *( 0/ 12)*
FE-59 ( 36) 30. ( 1.St 3.2)E -1 20 ( 7.0 t 5.S:E -1 ( 7.c 5.E:E -i
( 01 (-2.6 - 3.51E C (-2.2 - 4.8)E O (-2.2 - 4.5 E C et 0/ 24)* e( 0/ 12)e et Or 12),
CM0 ( 36) 15. ( -!.42 1.8)E -1 11 (-5.2 1 26.0)E -2 (-5.1 t 2.3)E -1
( 0) (-1.9 - 1.4)E 0 (-1.9 - 1.4)E 0 (-1.8 - 1.0)E O et 0/ 24)* e( 0/ 12)e *( 0/ 12)*
IN-65 ( 34) 30. ( -1.!* 4.4)E -1 11 (-8.9 t 72.3)E -2 (-4.7 i 4.0)E -1
( 0) (-3.8 - 4.7)E O (-3.8 - 4.7)E 0 (-2.6 - 1.9)E O
- ( 0/ 24)* *( 0/ 12)e et 0/ 121e IR-95 ( 36) 30. ( -5.42 3.9)E -1 12 (-1.2 t 5.6)E -1 (-4.7 3.5)E -1
( 0) (-4.2 - 2.3)E O (-4.2 - 2.3)E 0 (-2.6 - 1.5)E O
- ( 0/ 24)* *( 0/ 12)e et 0/ 12)e
- N%-ROUTINE REFEPs TO TE WYstR OF SEPARATE EAstFEMENTS lei!CH GE MTATER THA*J TEN (10) TIMES THE AVERE{ BFJCWJJN3 F0F THE FERIOD Or THE REP 0FT.
+t THE FRA'. TION OF SAa'.~tE ANA.YSES Y!ELDING DETECTABLE EA9AEMENT5
(!.E. >3 STD DEVIAT!0ft?) IS !NDICATED WITH *( le.
EWIROENTAL RADIOLOGICAL PROGRAM SUPT %RY
! WINE YA E EE ATOMIC POWER STATION. WISCASSET. E JANUMY - DECEMEER 1985 EDitet: ESTUARY WATER UNITS: PCl/KG IICICATOR STATIONS STATION WITH HIGEST EAN CDN'ROL STATION 3 enumunmue menenmuemmtae m m m *****e RADILM E ! DES EAN EAN EAN (ND. MALYSES) REQUIRED RANGE STA. RANGE RANGE (NON-ROUTIE)* LLD NO. DETECTED +* NO. NO. DETECTED ** NO DETECTED **
R)-103 ( 36) ( -9.2t 1.5)E -1 20 (-5.6 t 2.6)E -1 (-5.6 t 2.6)E -1
( 0) (-2.1 - .2)E 0 (-2.0 - 1.3)E O (-2.0 - 1.3)E 0
- ( 0/ 24)e *( 0/ 12)* *( 0/ 121e RU-106 ( 36) ( -1.62 1.6)E O 12 (-7.9 2 27.4)E -1 (-2.6 t 2.5)E 0
( 0) (-1.4 - 2.0)E 1 (-1.4 - 2.0)E 1 (-1.2 - 1.9)E 1
- ( 0/ 24)e *( 0/ 12)e *( 0/ 12)*
I-131 ( 36) ( -6.52 6.0;E -! 12 (-1.5 t 9.3)E -1 (-7.2 t 14.3)E -1
( 0) (-5.7 - 5.5)E O (-5.1 - 5.5)E O (-1.3 - .7)E 1
- ( 0/ 24)* *( 0/ 12)e *( O! 12)*
CS-ISA ( k i 15. ( -2.22 1.5iE -! 11 (-1.6 t 2.2)E -1 (-7.0 t 2.54E -1
( 0) (-2.1 - 1.1)E O (-2.1 - 1.1)E O (-2.8 - .31E O
- ( 0/ 24)* *( 0/ 12)e *( 0/ 12)e CS-137 ( 34) 1E. ( -S.42 13.8)E -2 20 ( 3.: i 2.1)E -1 ( 3.2 2 2.!!E -1
( 0) (-1. 7 - 1.3)E O (-1.0 - 1.2)E 0 (-1.0 - 1.2)E O
- ( 0/ 24)* *( 0/ 12)e *( 0/ 12)e BA-140 ( 36) 60. ( -4.4t 3.7)E -1 12 (-3.5 t 5.4)E -1 (-7.0 t 6.4:E -!
( 0) (-3.3 - 2.5)E O (-3.3 - 2.5)E O (-5.6 - 3.4)E O
- ( 0/ 24)* et 0/ 12)* *( 0/ 121e CE-141 ( 36) ( -1.6t 2.4)E -1 11 (-1.3 t 3.1)E -! (-3.2 t 4.1)E -1
( 0) (-2.9 - 2.0lE O (-1.5 - 1.8)E O (-3.5 - 1.7)E O
- ( 0/ 24)e et 0/ 12)* *( 0/ 12)*
CE-144 ( 36) ( -5.it 10.7)E -1 20 ( 5.7 t 12.4)E -1 ( 5.7 t 12.4)E -!
( 0) (-8.4 - 10,5)E O (-7.2 - 7.1)E O (-7.2 - 7.1)E O
+( 0/ 24)* *( 0/ 12)* *( 0/ 12)*
H-3 ( 12) 2000. ( 1.62 1.1)E 2 12 ( 4.0 t 1.0)E 2 ( l.0 t 1.2)E 2
( 2) (-3.5 - 5.7)E 2 ( !.7 - 5.7)E 2 (-1.3 - 4.1)E 2
- ( 2/ 6)* *( 2/ 4)* *( 0/ 4)e
- NON-ROUTINE REFERS TO TE ff.rGER OF SEFAPATE EA9fEMENTS WICH WERE GREATER THAN TEN (10) T!ME5 TtE AVERME BACrCE<0VC F3R THE PER102 CF THE RESOU.
- THE FR/4T!04 0F SA'9LE ANALYSE 5 YIELD! 0 DETECTAF.E MEAIM ENE W (1.E. >3 STD CEVIATION5) 15 I K:CATED WITH *: H.
3.9 Marine Algae Samples of mixed Fucus and Ascophyllum marine algae are collected from three locations on a quarterly schedule. Each sample is analyzed for gamma emitting radionuclides.
f The only gamma-emitting radionuclide detected, other than naturally occurring K-40 and Be-7, was I-131 at control station AL-23 in Boothbay Harbor. A routine collection of marine algae showed 96 i 16 pCi/kg on June 11, 1985. No I-131 was detected at stations located in the plant vicinity. Neither was I-131 detected in the composite water sample from the plant outfall. A subsequent sample taken at the sewage treatment plant outfall en July 8, 1985 in Boothbay Harbor showed 5.6 1 1.2 pCi/kg I-131. This, along with further investigation of the subject indicated that I-131 was not due to plant effluents but entered the harbor from the sewage treatment plant.
ENVIROWENTAL RADIOLOGICAL PROGRAM StM9RY IMIE YAEEE ATOMIC POWER STATION. WISCASSET E JAKIARY - DECEMBER 1985 EDIVM: MARIE ALGAE LMITS: PCI/r0 WET INDICATOR STATIONS STATION WITH HIGE ST E AN CCNTROL STATICtG
- ++********u www+e ******++n w e+* ueouneon**
RADIONUCLIDES EAN EAN EAN (NO. ANALYSES) REQUIRED RANGE STA. PANCE RAN3E (N0H0tlT!E)* LLD NO. DETECTED ** NO. NO. E TECTED+e NO. DETECTED ++
K-7 ( 14) ( 1.Se .5)E 2 12 ( 2.5 t .9)E 2 ( 1.1 1 .1)E 2
( 0) ( 2.4 - 45.2)E 1 ( 3.9 - 45.2)E 1 ( 5.9 - 14.2)E 1
- ( 5/ 8)* et 3/ 4)e et 5/ 6)*
F-40 ( 14) ( 6.lt .5)E 3 11 ( 6.2 i .8)E 3 ( 5.5 t .7)E 3
( 0) ( 4.3 - 8.0)E 3 ( 4.3 - 8.0)E 3 ( 3.2 - 7.4)E 3 et 8/ 8)* *( 4/ 4)* e( 6/ 6)*
CR-51 ( 141 ( 3.02 10.8)E 0 12 ( 8.1 t 22.9)E O ( 5.3 t e.9)E 0
( 0) (-2.2 - 7.6)E 1 (-2.2 - 7.6)E 1 (-1.8 - 4.4)E 1
- ( 0/ 8)* *( 0/ 4)* *( 0/ 6)*
E-9 ( 142 ( -2.31 1.11E 0 2: ( 4.$ t 12.3)E -1 ( 4.5 1 12.9 E '.
( 0) i-9.2 - 1.5)E O (-4.4 - 4.1)E O (-4.4 - 4.1)E O
- ( 0/ Sie *( 0/ 6)* et 0/ 6)*
CO-5 ( !?) ( -3.s t 17.5!E -: 12 ( 1.4
- 3.2)E O ( !.0 t 19.2'E -1
( 0> (-5.9 - 7.7)E O (-5.9 - 7.7)E O (-4.8 - 8.9)E O
- ( 0/ 8)* *( 0/ 4)* *( 0/ 6)*
FE-Si ( 14) ( 3.32 3.01E O 11 ( 9.1 t 2.2)E O ( 6.7 t 34.1)E -1
( 0) (-S.8 - 13.C)E 0 ( 2.7 - 13.0)E O (-8.1 - 12.3)E O
- ( C/ 8)* *( 0/ 4}e *( 0/ 6)*
CP-60 ( 14) ( 1.6r 1.7)E O !! ( 2.3 t .?)E O (-1.6 t 1.01E O
( 0) (-8.1 - 8.1)E 0 ( 8.1 - 47.4)E -1 (-4.2 - 2.61E O el 0/ 8)* *( 0/ 4)* *( 0/ 6)*
IN-65 ( 14) ( -1.31 2,6)E O !! (-5.0 t 44.8)E -! (-9.0 t 27.9)E -1
( 0) (-1.2 - 1.0)E 1 (-1.2 - 1.0)E I (-l.3 - .6)E 1 et 0/ 8)* *( 0/ Als *( 0/ 6)e ZR-95 ( 14) ( 1.7t 3.0)E 0 23 ( 2.3 1 1.9)E 0 (.2.3 t 1.9)E O
( 0) (-9.2 - 15.7)E 0 (-6.8 - 6.4)E 0 (-6.8 - 6.4)E O
- ( 0/ 8)* *( 0/ 6)* *( 0/ 6)*
- h7<-R0t'i!NE FFEc1 TO THE MMER OF SEFAFATE EA9.REENTS lei!CH WERE GREATEF MA TEN (10) TIP'.ES ThI AVEUGE EWJWJJiD F05 THE PERIOC 0F THE PE00FT.
e+ Th* FF/.:TIO*: Or SA9.E #.'4Y5ES i!ELC '.' sCOECTAILE !".EtG.5EO.i!
(f.E. >? 57t- [C.'!A*!N li IN*!CATEC WIT" E H.
.39
ENVIROPfENTAL RAD 10L001 Cat PROMAM SLMY MINE YANKEE ATOMIC Pte sii.fiC6. W!SCAS!ET, E JANUARY - DECEMBER 1985 EDIUM: MRIE ALGAE LNITS: PCI/KG WET INDICATOR STATIONS STATION WITH HIGEST MAN CDNTRJ. STATIONS mw+++we+m en n++*+ n + m n++ n n e m ++ m ** m **n **
RADIONLCLICES EAN EA*! EAN (NO. ANALYSES) REQUIRED RANGE STA. RANGE RAN3E (IDHE)UTIEl+ LLD NO. DETECTED ++ M). NO. IETECTED** NO. DETECTED **
R)-102 ( 14) ( -1.!t 8.3)E -1 12 ( 9.6 1 ll.0)E -1 ( 9.8 1 144.5)E -2
( 0) (-3.5 - 3.8)E 0 (-1.4 - 3.8)E 0 (-5.1 - 4.6)E O
- ( 0/ 8)* *( 0/ 4)* *( 0/ 6)*
RU-106 ( 14) ( -1.12 .7)E 1 11 (-8.7 2.0)E O (-2,3 t 1.3)E 1
( 0) (-4.5 - 3.1)E 1 (-1.4 - .5)E 1 (-7.5 - 1.2)E I
- ( 0/ 8)+ *( 0/ 4)* *( 0/ 6)*
I-131 ( 14) ( -2.6 3.7)E O 2? ( !.9 1 1.6)E 1 ( 1.9 : 1.6)E 1
( 0) (-2.1 - 1.3)E 1 ,
(-6.6 - 96.3)E 0 (-6.6 - 96.3)E O
- ( 0/ 8)* *( 1/ 6)* *( 1/ A)*
C5-134 ( 14) ( -1.72 1.91E O 11 t-1.t i 3.4;E O (-2.7 2 1.4)E 0
( 0) (-8.6 - 8.3)E O (-t.3 - 8.3)E O (-5.7 - .6)E O
- ( 0/ 8)* *( 0/ 49 of 0/ 64 CS-137 ( 14) ( 4.7: 2.0)E O !! ( 6.8 4)E O ( 1.1 i . ele :
( !) (-8.4 - 9.5)E O ( 6.2 - 7.9)E O (-7.4 - 41.8)E -1
- ( 0/ 8)* *( 0/ 4)* *( 0/ ele T4-140 ( 14) ( -1.62 3.112 0 12 ( 3.0 t 5.0)E O (-2.1 1 3.2)E O
( 0) (-1.4 - 1.4)E 1 (-6.8 - 13.7)E 0 (-1.6 - .6)E 1
- ( 0/ 8)* *( 0/ 4)* *( 0/ ()*
CE-141 ( 141 ( 2.!t 1.7)E 0 11 ( 3.7 t 3.3)E 0 ( 9.7 2 25.1)E -!
( 0) (-3.5 - 12.6)E O (-3.5 - 12.6)E O (-1.0 - .7lE 1
- ( 0/ 8)* *( 0/ 4)* *( 0/ 6)*
CE-144 ( 14) ( -7.42 7.7)E O 23 ( !.0 t .7)E ( 1.0 t .7)E 1
( 0) (-4.4 - 2.0)E 1 f-1.0 - 2.9)E i (-1.0 - 2.9)E 1
- ( 0/ 8)* *( 0/ 6)* *( 0/ 6)*
TH-232 ( 14) ( 3.1t .5)E 1 12 ( 3.2 t 1.0)E 1 ( !.9 i .6)E i
( 0) ( 1.2 - 5.8)E 1 ( !.2 - 5.8)E I ( 3.6 - 327.0)E -1
- ( 0/ 8)* *( 0/ 4)* *( 2/ 6)*.
- N7i-80JTINE REFEet TO TE N?LTR Or SEPAPATE EASLREENTS INICH lF<E GREA'Er THAN TEN (10) TIMES THE AVERAGE BACrCRXPO FCA THE PEFIOD OF Ti6 REEVT.
H THE FRACTION OF Str? .E IM'.YSES Y!ELDIN:. CITECTABLE EARS??E'ei!
(!.E. >7 STC DEV!AT!0N1) !$ IND!f.W ED WITH *' )*,
3.10 Sediment Sediment core samples were collected from four locations during May and November. The Cs-137 detected in sediment is partly (4ue to early plant operation, when routine liquid effluents from the plant were discharged in this area. Due to poor diffusion, a discharge diffuser was installed and liquid effluents are now discharged into the Back River. Some of the Cs-137 is due to nuclear weapons testing fallout, as can be seen from the control station measurements. No significant increases in Cs-137 were noted at any sampling location.
The 10-15 cm section of the cores taken on May 8, 1985 at Station 16 showed 31 1 5 pCi/kg of Cs-134. The depth of this activity in the core indicates deposition during a previous year.
The same is true for the Co-60 identified in the 5-10 cm and the 10-15 cm sections of the same cores. The measured concentrati ms were 82 1 16 and E6 1 10 pCi/kg, respectively.
In addition to Cs-137, Cs-134, and Co-60, naturally occurring Be-7, K-40, and AcTh-228 were detected in sediment samples.
Doses have been measured and calculated in previous years and h.vo been shown not to exceed any regulatory limits. Neither is there any likelihood of a resulting public intake in excess of one percent of what could result from continuous exposure to the concentration values in Appendix B, Table II of 10CFI?70.
EWIR0lfeilti MDIOLOGICAL PROGMM SLOWM MIE YetIE AT1MIC POER STATION h!!OSSET. E Jut)ARY - DECDOEF 1985 EDitP: SEDIENT LNITS: PC!/W ERY INDICATOR STATION 3 STATION WITH HIRE?T E AN (D(TRCt. STATIOP6 ee****+nenwu eeee neweenwan.eeeeee w w+n ne****e RADIOECLIDES EAN EAN EAN (NO. ANALYSES) EQUIRED RANGE STA. ANCE MICE (NDHOUTIEle LLD NO. DETECTEDee NO. NO. ETECTEDee 10. DETECTEDn E-7 ( 321 ( 1.4 .5)E 2 16 ( 2.2 i 1.01E 2 ( !.2 t 6.1)E 1
( 2) (-3.5 - 8.0)E 2 (-1.4 - S.01E 2 (-2.4 - 3.1)E 2 et 2/ 24)e et 1/ Ble et of 8)e A-40 ( 32) ( 1.8t .0)E 4 18 ( 1.8 t .01E 4 ( 1.6 i .1)E 4
( 0) ( 1.0 - 2.01E 4 ( 1.0 - 2.0)E 4 ( 1.0 - 1.9)E 4 et 24/ 241' et 8! 8)* *( 8/ 6te G-5! ( 321 ( 4.?: 4.2)E 1 le ( 1.2 1.01E : 'O.7e 4.7+E 1
( 0) ( ~;. 0 - 5.3)E 2 (-2.8 - 5.3)E : (-1.3 - 2.6)E 2
- ( 0/ 24)* *( 0/ Ble et 0/ 8).
Pt.-!4 3b ( -2.12 .;iE 1 li (-1.6 t .2)E 1 (-1.e t 4E : ,
( 0) (-3.9 - .5)E 1 (-2.2 - .5)E 1 (-3.3 - .1)E 1 et 0/ 24)e et 0/ Sie of 0' 81.
CC-53 3D ( -7.92 4.7)E 0 12 (-3.4 t 7.7)E O (-1.) .5;E : ;
I 0) (-5.1 - 3.5)E I (-3.3 - 2.9)E 1 44.2 - 4)E 1 et 0/ 24'e *( 0/ Ble *( 0/ 6)*
FE-5: ( 327 ( 8.62 9.9)E O 16 ( 2.0 t 1.2)E 1 (-4.2 t 12.6)E O
( 0) (-1.1 - 1.2)E 2 (-1.9 - 9.2)E 1 (-3.3 - 7.7'E 1 et 0/ 241 *( 0/ 8)* el C/ $!*
C0-60 ( 321 ( 2.4r .51E 1 16 ( 3.8 t 1.0l! 1 f 5.5 2 3.2)E O
( 21 (-1.4 - 8.2)E 1 ( 1.4 - 6.2)E 1 (-1.! - 1.6)E 1
- ( 2/ 24)e *( 2/ Sie of 0/ 8)*
ItN.5 ( 32) ( 9.42 79.4)E -1 12 ( 1.3 t 1.6)E 1 (-1.5 .9)E 1
( 01 (-7.4 - 11.3)E 1 (-2.7 - 11.3)E 1 (-4.6 - 3.01E 1
- ( 0/ 24)e *( 0/ 8)* et Or E)*
ZF-95 ( 32) ( 1.42 5.8)E 0 18 ( 6.9 s 13.8)E 0 ( 4.1 t 11.7)E O
( 0) (-5.7 - 5.8)E 1 (-5.7 - 5.8)E 1 (-4.6 - 5.5)E 1
- ( 0/ 24)* *( 0/ 8)* *( 0/ 8)*
- N7. c?JT!'E REFER? TO THE KPPER OF SEPAC. ATE MEA 9ffeTS WICH WERE ffEA'Er TH#: TEN (10) TIP'E! THE A'EP/4E BACFC#Atc FOR TW PERIOD 7 TT REfffT.
- T4 F54'.T!0f. 0: SARE AM.V!Et YIELDI0 DETECTI.P E MEtOfEGT!
(i.E. '3 ST0 DEVIATIO'm !! ItGICATEf WITH ef )*.
EN/IR0 MENTAL RADIOLOGICAL PROGRAM 9.M%RY MAINC VATEE ATOMIC PMR STATION WISCASSEi, E JAMJARY - DECE!9ER 1985 EDile: SEDl"EN' (N!TS: PCl/KO DRY INDICATOR STATICN3 STATION WITH HIGEtf Em CChTROL STATIONS eu+eee++w u +++ee w+wne***+++wwwwe enuwwewun RADICNJCLIIES Em EAN EAN (NO. ANALYSES) REQUIRED RANGE STA. R40E A#CE (NON-AOUTIEle LLD NO. DETECTEDH NO. NO. DETECTED ** NO. DETECTEDee RU-103 ( 32) ( -5.4t 5.6)E 0 18 ( 3.0 t 10.1)E 0 (-4.9 i 4.2)E 0
( 0) (-4.6 - 6.1)E 1 (-2.7 - 6.1)E 1 (-2.4 - 1.3)E 1 et 0/ 24)e et 0/ Sie *( 0/ 8)*
RU-106 ( 32) ( l.92 2.8)E 1 16 (7.62 4.81E 1 (-4.9 t 3.4)E 1
( 0) (-2.7 - 3.1)E 2 (-7.4 - 30.51E 1 (-1.5 - 1.5)E 2 e( 0/ 24)* *t 01 ele of Of 81e I I-!?: ( 32) ( -5.52 3.4)E 1 If (-4.0 t 4.91E 1 (-l.9 4.5tt !
( 0) (-4.6 - 2.9)E 2 (-3.3 - 1.3:E 2 (-1.9 - 1.3)E 2
- ( 0/ 24)e *( 0/ 8)* et 0/ S)*
U-134 ( 3D 15;. ( e.t: 3.7)E O ;2 i E.c r 7.5:E C (-4.' : 2.74 (
( 1) (-2.7 - 5.4)E 1 (-1.4 - 5.4)E 1 (-1.7 - .T>E 1 et 1/24)e *( 0/ 8)* et 0/ 8)*
G-!*7 ( 32) 1&:. ( 3.71 .8)E 2 It i t.' t 2,(:E 2 ( 2.0 1.:'E *
( 15) (-2.9 - 1560.0)E O ( 2.3 - 15.6)E 2 (-8,5 - 85.0 E O et 22/ 24)e et 8/ 6)e *( 2/ 8).
I BA .A'e ( 32) ( -9.72 1.4)E 1 12 4-5.9 t 2.3)E 1 (-7.2 t 2.3)E I
( 0) (-4.1 - .5)E 2 (-1.4 - .5)E 2 (-1.4 - 0.0)E 2 of 0/ 241e ei 0/ SN af !! Sie CE-141 ( 32) ( 3.22 .7)E 1 18 ( 4.* t 1.4E1 ( 3.0 t .61E 1
( 0) (-3.1 - 10.6)E 1 '-2.6 - 10.6)E 1 ( 3.3 - 74.7)E O l st 0/24)* *( 0/ 8)* *( 0/ 8)*
i CE-144 ( 32) ( -5.62 1.9)E 1 29 (-4.0 t 3.4)E 1 4-4.0 t 3.4)E 1
( 0) (-1.9 - 1.2)E 2 (-2.0 - 1.3)E 2 ( 2.0 - 1.3)E 2
- ( 0/ 24)* *( 0/ Sie et 0/ 09 i TH-232 ( 32) ( 7.8t .3)E 2 16 ( 8.1 2 4)E 2 ( 6.3 t .3)E 2
( 0) ( 4.9 - !!.4)E 2 ( 6.8 - 10.7)E 2 ( 5.2 - 7.8)E 2 et 24/ 241e #( 8/ ele et 8/ 818 e NON-FT/JTINE REFERS TO THE NMED Or SEPAGATE EAREEMENT5 WHICH WERE @IA!E:
THA' TEN 1101 TI'G M A'/E840E BC0&?X F05 Tf PERICI rr M FEey*,
j H THE FRA'.ilff. Of SA"/iE ANS.V!U Y!E1[IN: DETECTABLE TAREE"ENT!
(!.E. M $Te (CVIA?!0t'.a !! !O! RAT' W!Td *( H.
3.11 Finf,if Eight finfish samples were collected during 1985. Each sample was analyzed for gamma-emitting radionuclides. Except for naturally !
occurring M-40, no radioactivity was detected in the fish samples
- during 1985.
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EWIRONENTAL RADICLOGICAL PROMAM SURRY MAINE YAREE ATCMIC POWER STATION. li1SCASSET. E JMARY - DECDOER 1985 EDitP: FIFISH teitTS: PCl/r0 ET IE! CAT @ STAT!3fS STATION WITH HIGEST EAN CONTROL STATIONS w e+++++ w w + we+e +wew+n m*+wwwwwe newe+ennene RADI(REllIES EAN EAN EAN (NO. ANALYSES) REQUIRED RANCE STA. RME RANCE (NDHOUTIEle LLD NO. DETECTEDei NO. NO. DETECTEDH 10. ETECTEDH BE-7 ( 8) ( 1.8t 2.5)E 1 12 ( 4.7 1 2.2)E I (-6.3 i 3.0)E 1
( 0) (-7.3 - 10.7)E 1 ( 3.9 - 107.01E 0 (-9.5 - -3.4)E 1
- ( 0/ 6)* *( 0/ 4)e *( 0/ 21e K-40 ( 8) i 2.3t .2)E 3 23 ( 3.2 g .2)E 3 ( 3.2 t .2iE 3
( 0) ( !.7 - 2.9)E 3 ( 3.0 - 3.4)E 3 ( 3.0 - 3.4)E 3 et 6/ 6)* *( 2/ 2)* *( 2/ 21e CF-!! ( 9) ( !.it 37.2)E C 12 ( !.5 t 5.7)E 1 (-3.4 2 47.1)E O
( 0) (-1.5 - .9)E 2 (-1.5 - .9)E 2 (-5.2 - 4.6)E 1
- ( 0/ 6)* e( 0/ 4le of 0/ 21e t>$4 ( O IL. ( e.fr 10.2,E-1 21 ( 1.E t .71E 1 ( 1.5 .7)E !
( 01 (-2.6 - 3.9)E O ( 1.0 - 2.5)E 1 ( l.0 - 2.51E t et 0/ 6)e of 0/ 2)* *( 0/ 2)*
CO-!d i 6 !!'. I 5.!? 27.2)E -! 1: ( l.4 1 1.SIE O f-2.1 1 . ':E '
( 0) (-1.0 - .OE 1 (-2.1 - 5.6)E O (-2.6 - -1.6)E 1
- ( 0/ 6)e e( 0/ 4)* et 0/ 2)*
FE-!? ( 81 260. ( -1.5 !!.2)E O 23 ( 4.2 t 1.2)E 1 ( 4.2 t 1.2:E I
( 0) (-5.3 - 2.7)E 1 ( 3.0 - 5.4)E 1 ( 3.0 - 5.4)L 1 ei 0/ 6)* *( 0/ 2)e *( 0/ 2)*
CD-60 ( 0) 130. ( -1.32 36.9)E -! 12 ( 3.0 t 4.31E 0 (-9.2 t 2.1)E O
( 0 (-1.2 - 1.3)E I (-6.9 - 13.2)E O (-1.1 - .5)E 1
- ( 0/ 6)* et 0/ 4)e et 0/ 2)*
Ih-65 ( 81 260. ( l.It .7)E 1 11 ( 2.7 i .2)E 1 (-2.1 t 3't.21E O
( 0) (-1.3 - 2.8)E 1 ( 2.5 - 2.8)E I (-4.1 - 3.7)E 1
- ( 0/ 6)* *( 0/ 2)* e( 0/ 2)*
ZR-95 ( 8) ( -1.3t .5)E 1 23 ( l.4 t 1.8)E I ( l.4 t 1.8)E I
( 0) (-3.8 - .1)E 1 (-3.7 - 32.6)E 0 (-3.7 - 32.6)E 0 et 0/ 6)* et 0/ 21e et 0/ 21e
- EMOUT!'E REFESS TO THE NMCP Or SEPARATE EA9JREENTS WHICH WERE GREATES TWA TEN (10) T!"ES THE As#E BO3 ROM FOA THE PERIOD OF THE REUT.
- THE FRA* TION Or SA*(E ts_Y!E: Y!ELO!K. CETECTAP.E EA9AE" irs (1.E. >3 ST0 CEV!ATICen! IS INDICATED WITH *( )*.
ElW!ROWOTAL RADIOLCICAL PROGRAM SLMMRY MA!E YAREE ATOMIC PONER STATION. WISCASSET. E JANJARY - KCEMBER 1985 EDILM: FlWISH (MITS: PCI/r0 WET ICICATCA STATIONS STATION WITH HIGEST EAN Ct)NTROL STATIONS neeneeenunne nunnunenunenne eenenneeenee RADICWUCLIDES EAN EAN EAN (NO. ANALYSES) EQUIRED RAN3E STA. RAEE RAME (NOHOUTIE)* LLD NO. DETECTEDee NO. NO. ETECTEDee NO. DETECTEDee Re-103 ( 8) ( 6.4t 1.0)E 0 11 ( 6.5 t .6)E 0 ( 8.0 t 123.0)E -1
( 0) ( !.7 - 8.6)E o ( 5.9 - 7.2)E 0 (-l.1 - 1.3)E 1 e( 0/ 6), et 0/ 2)e *( 0/ 2H RJ-106 ( 8) ( -4.02 2.1)E I 23 ( l.2 t .2)E 2 ( !.2 2 .2)E 2
( 0) (-1.1 - .1)E 2 ( l.0 - 1.41E 2 ( l.0 - 1.4)E 2
- ( 0/ 69 *( 0/ 2H *( 0/ 21e I-131 ( 8) ( 4.52 7.1)E O ?? ( 1.6 1 1.!!E I ( !.! t 1.1)E 1
( 0) (-2.7 - 2.3)E I ( 5.6 - 2e.7)E O ( 5.6 - 26.7)E O et 0/ 6H <
et 0/ 2)* *( 0/ 2H CT-134 f 9' l Yi. ( -4.(! 2.3)E O !! (-!.8 t ?.3'E (- f e.5 t 7.4 E ^
t 0) (-1.5 - .2)E 1 (-4.7 - 1.9)E 0 ( 1.E - DE 1 et 0/ 69 e! 0/ 2H *( 0/ 21e Ci-!P f fi 150. ( 9.!: 1.UE O 2? I 9.5 e .OE O ( 5.5 t .!!E .
( 0) ( 4.0 - 14.9)E O ( 5.3 - 10.4)E O ( 5.3 - IC.8)E O
- ( 0/ 6)e e( 0/ 2)e et 0/ 2H I A-!O ( O ( -8.42 2.3)E O 23 ( 7.1 t 22.9)E O ( 7.1 1 22.OE O
( 01 (-1.5 - .2)E I (-1.6 - 3.01E I (-!.6 - ?.0iE !
I #( 0/ 6)e et 0/ 2)* *! 0/ 21e i
l CE-141 ( 61 ( -2.7t 6.4)E O 23 ( l.6 t 6.1)E O ( l.6 e.11E O I ( 0; (-1.9 - 1.9)E I (-6.5 - 9.7)E O (-6.5 - 9.hE O et 0/ 6), el 0/ 21e #I 0/ 2H CE-144 ( 6) ( !.92 2.0)E I 12 ( 3.6 t 2.3)E 1 (-4.1 t 2.C E 1
( 0) (-5.1 - 9.2)E I (-l.8 - 9.2)E I (-6.2 - -2.1)E I l.
et 0/ 6)* of 0/ 4)e *( 0/ 29 TH-272( 6) ( l.22 2.1)E I 12 ( 2.9 f 2.3)E I ( 2.0 t 1.9)E I
( 01 (-6.0 - 9.3)E 1 (-l.1 - 9.3)E I ( 5.1 - 305.01E -l
- ( 0/ 6)e *( 0/ 4H et 0/ 2H e KN-ROUT!NE REFERS TO THE M.PGER Or SEFARATE EA9AE!OT? Wi!CH WERE CFEATEF Tm'i TEN (l(d TIMES THE AVERT *E E#SCEfR FOR THE PEF 100 Cr THE FtP0cT.
" M FFA?!CN CF SIMIE A?.;'.v!E5 Y!E' .DIO K*ECTA!'_E *EA9?EMDF'
(!.E. >? STD KVIATIONI) !! !N!!CATE2 WITd C le.
1-
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x l 3.12 !!ussels ,
, 1 Mussel body samples ars' collected from three locations on a w
quarterly schedule. Each sample is analyzed for gamma-eeltting radionuclides. Except for naturaily occurring N-40, no radionuclides were detected in any sample, s
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EWIROWENTAL RA2!Ct.00! CAL PROC 34M Stef%RY i MAINE YAWEE ATOMIC K1WER STATION. WISCA? SET. ME JANLARY - KCEMBER 1985 EDILM: litSSEL UNITS: PCI/KG WET INDICATOR STATICNS STATION WITH HIG E ST T AN CONTROL STATIONS ununwoneau nuneunnenneeenn eneeenenune RADIOWCLIDES EAN EAN EAN
( W. ANALYSES) REQUIRED RANCE STA. RAKE RWE (N0 H OUTI E le LLD NO. DETECTEDet NO. NO. ETECTEDH NO. ETECTEDee K-7 ( 12) ( 3.li 4.8)E 1 23 ( 4.7 t 2.7)E I ( 4.7 t 2.7)E 1
( 0) (-2.0 - 2.21E 2 (-2.1 - 10.9)E I (-2.1 - 10.?:E 1
- ( 0/ 8). *( 0/ 4)* *( 0/ 4)*
K-40 ( 12) ( 9.22 1.2)E 2 12 ( 1.1 i .1)E 3 ( !.! t .2)E 3
( 0) ( 4.6 - 12.SIE 2 ( 6.7 - 12.8)E 2 ( 6.4 - 14.7)E 2
- ( 7/ 6)* et 4/ Ale e( 4/ Ale CR-51 ( 121 ( 2.1t 2.41E 1 11 ( 2.9 t 4.1)E I (-7.4 t 4.2nE 1
( 0) (-6.1 - 13.1)E 1 (-4.9 - 13.1)E 1 (-1.5 - 4)E 2
- ( 0/ Gle *( 0/ 4)e et 0/ 4)*
l M'. *
- i 12' ( -3.1t 5'.('E -: !! ( .: 10.5 E 0 (-7.5 : 4.*:E^
( 0) (-1.6 - 3.3)E 1 (-1.6 - 3.3)E ! t-2.0 - .11E !
l
- ( 0/ Ble et 0/ Ale et 0/ 41' CD-SS ( 12) ( -5.62 3.2)E O !! (-6.e t 50.8)E -1 (-4.0 2 6. t. . ! (
( 01 (-1.6 - .6)E 1 (-1.6 - .6)E 1 (-3.0 - 9)E 1 e( 0/ Sie ei 0/ 4)* *( 0/ 4)*
FE-54 ( 12) ( 6.3 3.31E 0 12 ( 7.7 t 3.8)E o (-4.2 t 15.SiE 0
( 0) (-1.1 - 1.8)E 1 ( 6.6 - 174.0)E -1 (-3.2 - 2.9'E 1 e' 0/ Ele et 0/ 4)* e' 0/ Ale CO-60 ( 121 ( -5.22 4.0)E 0 22 (-1.7 t 3.5)E o (-1.7 t 3.5'E C
( 0) (-2.3 - 1.3)E 1 (-1.1 - .6)E 1 (-1.1 - .6)E 1 et 0/ 8)e et 0/ 4)e et 0/ 4)e i
LN-65 ( 12) ( -2.0: .41E 1 23 (-1.2 1 1.2)E 1 (-1.2 t 1.2)E 1
( 0) (-3.9 - .1)E 1 (-3.7 - 2.1)E 1 (-3.7 - 2.1)E I
- ( 0/ 6)e *( 0/ 4)e e( 0/ 4)*
ZR-95 ( 12) ( l.11 .6)E 1 11 ( 1.9 t 1.0)E I (-1.1 t 1.7)E 1
( 0) (-5.0 - 43.1)E O (-1.1 - 43.1)E 0 (-4.3 - 3.3)E 1
- ( 0/ Sie *( 0/ 4)* *( 0/ 4)e e NON-ROUTINE REFERS TO THE NUMPER OF SEPARATE EAidEENTS WHICH WEFI GREATER THIA HN (10) TIMES THE AVERAGE B00rops r(p Tf, cERIOD (F THE REWJ5i.
n THE FRF. TION Cr StrPLE A'ALYiES YIELD!% KTECTABLE MEASURE" INT!
(1.E. >3 STD DEVIATIDG IS INDICATED WITH et le.
EWIROPMNTAL RADIOLOGICAL PROGRAM StWORY m!NE YAEEE ATCMIC POWER STATION. WISCASSET. ME JAKIARY - DECOGER 1985 EDILM: EtSSEL LMITS: PCI/KG WE1 3
ICICATOR STATION 3 STATION WITH HIGEST EM CONTROL STATION 5 e++++eeet++e++eeee ++++++++eee+++eeeeeeeeeen eee+ee+eee++eeen RAD 10YJC1.! DES EAN EAN EAN (NO. AMLYSES) RE9) LED PW3E STA. RANCE RAr0E (NON-R0VIIE)* LLD NO. DETECTEDie 10. NO DETECTED +, NO. DETECTED *e R&-103 ( 12) ( -2.91 6.1)E 0 23 ( 3.3 t 3.8)E O ( 3.3 t 3.8)E O
( 0) (-3.4 - 1.7)E 1 (-3.2 - 13.5)E 0 (-3.2 - 13.5)E O
- ( 0/ 8)* *( 0/ 4)* *( 0/ 4)e R'-106 ( 12) ( -3.32 3.2)E 1 12 ( 1.4 1.6)E 1 (-1.6
- 5.4)E 1
( 0) (-2.1 - .5)E 2 (-3.4 - 3.9)E 1 (-1.3 - 1.1)E 2
+( 0/ 8)* *( 0/ 4)* *( 0/ 4)*
I-12' ( 12) ( -1.6 1.11E 1 !? ( 6.* i 6?.2)E -1 (-2.3 t 23.?'E o
( 0) (-7.7 - 1.1)E 1 (-1.9 - 1.1)E 1 (-4.1 - t.7)E 1
- ( 0/ 8)* et 0/ Ale *( 0/ 4)*
C?-:?? i 12) ( -d.!: 5.0 E C 12 (-2.: : t!.C'E -: :( '.c : : 'E
( 0) (-2.9 - 1.7)E 1 (-1.2 - 1.7)E I t-:.4 - .1 )E 1
+( 0/ 6)+ *t 0/ 4), *( 0/ 4)*
C5-13' ( !? ( 2.2: 2.6'E O 12 ( 4.0 2 2.41E O ( 3.5 : 3.1:E C
( 0) (-1.4 - 1.0)E 1 (-6.1 - 95.7)E -1 (-5.1 - 9.3rE 0
- ( 0/ 8)* *( 0/ 4)* *( 0/ 4)+
Ea-140 ( 12) ( -8.6 81.6)E -1 12 ( 2.2 i 15.2)E O (-1.3 t 1.6)E 1
( 0) (-4.1 - 2.8)E 1 (-4.1 - 2.8)E 1 (-6.4 - 1.5)E 1
- ( 0/ 8)* *( 0/ 4)* et 0/ die CE-141 ( 12) ( -2.0: 7.5)E O 11 ( 7.4 t 13.8)E O (-1.3 t 4.0)E O
( O' (-2.0 - 4.4)E 1 (-2.0 - 4.4)E 1 (-1.5 - .6'E 1
- ( 0/ 8)e *( 0/ 4)* *( 0/ 4)+
CE-144 ( 12) ( 3.2: 14.0)E O 23 ( 1.4 i 1.3)E 1 ( 1.4 t 1.3)E 1
( 0) (-6.9 - 4.2)E 1 (-1.2 - 4.9)E 1 (-1.2 - 4.9)E 1
- ( 0/ 8)* et 0/ 4)* *( 0/ Ale TH-232 ( 12) ( 2.2t .8)E 1 23 ( 2.7 t 1.7)E 1 ( 2.7 t 1.7)E 1
( 0)' (-2.0 - 4.8)E 1 (-5.9 - 74.6)E O (-5.9 - 74.6)E O
- ( 0/ 8)* *( 0/ 4)e *( 0/ 4)e
- NW900 TINE REFERS TO THE MBER OF SEPARATE EASLREMENTS WICN ERE GREATE5 T M N TEN (10) TIMES THE AVERAGE BACKGRCt)O FOR THE PERIOD Or THE REPORT.
H THE FWTICN OF SA"?LE ANALYSE 5 YIELDIN3 DETECTABLE MEA 9 MFD?T5 (I.E. >3 STD DEVIAT10N5) IS INDICATED WITH *( le.
3.13 Crustaceans Crustacean samples consisted of crabs collected from four locations on a quarterly schedule and five lobstor samples collected from three locations over the course of 1985. Each sample was analyzed for gamma-emitting radionuclides. Other than the naturally occurring X-40, no radionuclides were detected in any of the samples.
EWIR0ft:NTAL RADIOLOGICA. FROL' RAM SLfWEY MAINE VANEE ATCPIC POER STATION, WISCAs3ET, ME JAMJARY - DECD E{R 1985 ED!ltt: CRUSTACEANS LNITS: PCI/KG WET IC!CATOR STAT!0r6 STATION WITN HIGEST EAN CONTM. STAT!CNi eeteneeeeene,+<een eeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeee, RADIONJCLIIES EAN EAN mew (NO. ANALYSES) RE0JIRED RA0E STA. RANGE RAKE (N]N-ROUTIEle 1.LD NO. IETECTEDet NO. W. DETECTEDet NO. DE!ECTEEu EE-7 ( 21) ( 6.61 15.8)E 0 13 ( !.4 t 4.8)E 1 (-1.3 t 1.1)E I
( 0) (-9.5 - 13.8)E 1 (-9.5 - 13.8)E 1 (-4.2 - 1.8)E 1
- ( 0/ 16)* *( 0/ 4)e *( 0/ 5)e K-40 ( 21) ( 1.92 .1)E 3 11 ( 2.2 t .2)E 3 ( 1.7 t .1)E 3
( 0) ( 1.1 - 3.1)E 3 ( 1.7 - 3.1)E 3 ( 1.4 - 1.9)E 3
- ( 16/ 16)* *( 6/ 6)* *( 5/ Sie l CS-51 ( 21) ( 9.2t 23.1)E O 12 ( 2.7 t 5.5)E 1 (-4.9 i 3.21E 1
( 0) (-1.3 - 1.9)E 2 (-1.3 - 1.9)E 2 (-1.1 - .4)E 2
- ( 0/ 16)* *( 0/ 6), ei 0/ 5)*
M':-fi ( 2D i 2. 5 2.0'E O 12 ( !.3 t 3.O E O (-!.5 : !.?'E O
( 0) (-7.3 - 15.9)E O (-4.8 - 15.9)E O (-2.5 - 5)E 1 e( 0/ 16), *( 0/ 6)* et 0/ 5),
C0-5 ( 2D ( -2.0: 2. U E O 24 ( 5.5 t 1.5)E O ( 5.5 1.5?E C
( 0) (-1.7 - 1.1)E 1 (-1.0 - 9.6)E O (-1.0 - 9.8)E C
- ( 0/ 16)* et 0/ 5), et 0/ 5).
FE-5; ( 2D ( 3.0: 5.7)E O 11 ( 7.1 i 12.0)E O (-7.6 t 7.8:E 0
( Of (-4.2 - 4.7)E 1 (-4.2 - 4.0)E 1 (-2.4 - 1.7)E 1
- ( 0/ 16). *( 0/ 6), et 0/ 5),
00-60 ( 21) ( -1.St 3.11E O 11 ( 2.9 t 5.4)E O ( 8.5 t 47.0!E -1
( 0) (-2.0 - 2.7#E 1 (-8.2 - 26.5)E O (-1.4 - 1.5)E 1
- ( 0/ 16)e et 0/ 6)* e( 0/ 5),
ZN-i! ( 21) ( E. 22 4.1)E O 13 ( 1.6 i .7)E 1 (-8.4 11.3)E O
( 0) (-2.1 - 3.7)E 1 ( 7.0 - 37.2)E O (-2.6 - 3.6)E 1 ef 0/ 16), et 0/ 4), e( 0/ 5).
IR-95 ( 21) ( -3.9t 4.7)E O 24 ( 1.0 t .8)E 1 ( !.0 t .8)E 1
( 0) (-3.1 - 4.1)E 1 (-1.7 - 2.8)E 1 (-1.7 - 2.8)E 1 e( 0/ 16), *( 0/ 5), *( 0/ 5),
e NON-R31 TINE REFERS TO TE M.PGED OF SEPARATE EA9JPEMENTS WilCli WERE CREATEP THAN 'EN (10) TIMES T E AVERA3E ENJCFJLt;D FCA THE PEh:02 Or THE PEPCAT.
ee THE FRACTION OF SA*LE ANA_YSES YIELDIO IETECTA? E MEAS'JREMENTE (1.E. >3 STL DEVIATIONS) IS IN21CATED w:TH ef le.
1 1
l l
EWIR09 ENTAL RA21(LOGIC /L MCM SLPWAY f91NE Yt& EE AT0"!C POWER STAi!Cri. WI!CASSET. E JMARY - DECOGER 1955 EDitP: CRt!STACEE lei!TS: PCl/r0 ET 1
!@!CATOR STATIONS STATION WITH HIGiEST EAN CONTROL STATICN5 uutunu+unet en u+n++++++n++ne**u euentuentese RADION.CLIDES MEAN M G
( W. ANeiYSES) REWIRED REE STA. REE REE (N0k4tCUTIE)* LLD NO. DETECTED ++ NO. NO. DETECTED ** NO. DETECTELu RU-103 ( 211 ( -9.4t 27.3)E -1 12 ( 1.4 i 36.2)E -1 (-7.5 i 55.8)E -1 i ( 0) (-1.9 - 2.1)E 1 (-1.6 - .7)E 1 (-1.6 - 1.3)E 1
( *( 0/ 16)* *( 0/ 6)* *( 0/ 5)*
i l RU-106 ( 21) ( 2.41 2.0)E 1 13 ( 4.2 2 5.4)E 1 (-2.0 t 2.5)E 1
( 0) (-1.1 - 1.9)E 2 (-6.3 - 19.1)E 1 (-9.1 - 5.5)E 1 et 0/ 16)+ e( 0/ 4)e *f 0/ Su I-131 ( 21) ( 9.6 9.3)E Cx 12 ( 2.2 t 1.6)E 1 (-1.1 ! 2.2iE 1
( 0) (-7.4 - 9.3)E 1 . (-6.5 - 93.4)E O (-7.1 - 5.5)E 1 et 0/ 16)+ *( 0/ 6)# *( 0/ 5)*
C5-124 ( 21) ( -4.7: 2.1:E O 24 (-S.; i 42.0!E -1 (-5.2 2 42.0;E -1
( 0) (-2.3 - .7)E 1 (-1.6 - .9)E 1 (-1.6 - 9)E 1
- ( 0/ 16)e +( 0/ Sie *( O! 5)*
C5-137 ( 21) ( 2.22 17.5)E -1 24 ( 7.4 2 3.6)E O ( 7.4 t 2.6'E O
( 0) (-1.0 - .8)E 1 (-2.5 - 20.2)E O (-2.5 - 20.21E O
- ! O/ 16)+ *( 0/ 5)* #( 0/ 5)*
BA-140 ( 21) ( -5.92 3.0)E O 13 (-2.0 t 359.9)E -2 (-5.8 t 8.BiE O
( 0) (-2.3 - .8)E 1 (-6.E - 7.8)E O (-2,2 - 2.5'E 1
+( 0/ 16)* *( 0/ 4)* *( 0/ 5)*
CE-141 ( 21' ( 2.1t 2.9)E 0 13 ( 5.2 t 5.3)E 0 ( 3.6 t 5.0)E C
( 0) (-1.2 - 3.01E 1 (-3.8 - 20.6)E O (-1.3 - 1.6:E 1
- ( 0/ 16)+ *( 0/ 4)* *( 0/ 5)*
CE-144 ( 21) ( -1.22 1.2)E 1 24 ( 2.4 i 1.7)E 1 ( 2.4 t 1.7)E 1
( 0) (-9.3 - 6.9)E 1 (-3.1 - 6.1)E 1 (-3.1 - 6.1)E 1 i *( 0/ 16)+ *( 0/ 5)* *( 0/ 5)*
TH-232 ( 21) ( 1.5t 1.0)E 1 24 ( 2.2 t 1.2)E 1 ( 2.2 t 1.2)E 1
( 0) (-5.1 - 11.1)E 1 (-1.7 - 4.1)E 1 (-1.7 - 4.1)E 1 e( 0/ 16)* *( 0/ 5)* *( 0/ 5)*
l
- ON-ROUTINE REFER 5 TO THE N'.*GER Or SEPARATE MEAStFfMENTS WHICH WERE CREATER TIMN TEN (10) TIMES THE A'ERAGE BOTR1'O FOR THE PERIOD OF THE REP 00T,
- THE FR/0 TION OF SAMPLE ANA'. YSES YIELDIO DETECTALE MEAIGEMEN'S (I.E. >3 STD E IATION?) 15 INDICATED WITH #( lt.
3.14 Direct Radiation Direct gamma radiation exposure was determined from the use of thermoluminescent dosimeters (TLDs). Six calcium sulfate TLD dosimeters were placed at each of the monitoring stations. The sixteen outer ring TLDs were collected and read out on a quarterly schedule while the remainder were done monthly. The location and frequency of environmental TLD monitoring is consistent with the NRC Branch Technical Position (Reference 3).
One TLD badge set was lost over the course of 1985 due to vandalism (TL-35, Dresden) .
Summaries of the results can be seen in the table below. The mean exposure rates at the inner ring and outer ring stations are similar. Additionally, the station with the highest mean is a control location. The mean exposure rate for each category also did not increuse from 1984 to 1985. The above indicates that there were no detectable increases in direct gamma radiation to off-site locations due to the operation of Maine Yankee.
Annual average exposure rates are given for each station in Table 3.1.
Environmental Radiological Program Summary Maine Yankee Atomic Power Station, Wiscasset, Maine January - December 1985 Medium: Direct Radiation Measurements (TLD) Units: Micro-R per Hour v Station With Control '
Inner Ring Outer Ring Highest Mean Stations Mean Mean Mean Mean Range Range Station Range Range (No. Meas.)M (No. Meas.)* No. (No. Meas.)M (No. Meas.)*
8.5 8.1 11.6 9.7 6.0 - 14.0 6;l - 10.4 37 10.3 - 13.2 7.7 - 13.2 (228) (67) (12) (36)
- Most measurements based on readings from six TLD chips.
Table 3,1 Summary of Direct Radiation Moasursments, 1985 Micro-R Mic ro-R Station Per Hour Station Per Hour _
1 8.8 21 7.7 2 8.6 22 8.1 3 e.5 23 10.0 4 ,
7.3 24 8.2 5 10.3 25 8.4 6 8.9 26 8.3 7 8.4 27 7.7 8 8.5 28 6.8 9 9.5 29 7.4 10 8.2 30 9.2 11 9.0 31 9.2 12 8.2 32 8.3 13 10.3 33 7.9 14 7.8 34 7.4 15 7.4 35 6.4 16 8.5 36 8.9 17 9.3 37 11.6 18 8.5 38 8.8 19 8.1 39 7.4 20 7.4
r .
.5 y
' 5 M x5 "- e
~
40 QUAL.ITY ASSURANCE PROGRAM -
4- 4 ,
Three separate Quality Assurance programs were performed during 1985 to .' - y 1 demonstrate the validity of laboratory analyses by the Yankee Environmental
+ # '
Laboratory (YEL)
YEL par ti c i pate s in the EPA Interlaboratory Comparison (cross-check) }{ * . ; , .
program for those species and matrices routinely analyzed by the laboratory l~,"I'I This provides an independent check of accuracy and precision of the labora tory ..'l~.5 analysis. When the results of the cross-check analysis fall outside of the q' control limit, an investigation is made to determine the cause of the problem and corrective measures are taken e
YEL maintains an intralaboratory quality control progrem to assure t h( y"
.~
validity and reliability of the data. This program includes quality control ,. i .
of laboratory equipment, use of reference standards for calibration, deternination of c ount ing of fic iem ies ar-d analysis o br l a r3 and 41 Lo" . . ^ i' samples The records of the quality control progran, are reviewed by the responsible cognl/ ant individmal and corrective measures are t.i- whr-o
- e. .
applicable sf . .
A blind dup!)cate/ replicate program is also used Samples fror five . ,
nuclear plants, including Maine Yankee, are prepared from split or homogenous media and sent to the laboratory for analysis The results from this blind
- duplicate prog-am are used to check for precision in laboratory analyses r
., f.
EPA Interlaboratory and Intralaboratory Results
- t
.. , -/ The Quality Assurance program implemented at the analytical laboratory .-
F e.
g'-' indicated good prec i s ion and accuracy in reported values Table 4 1 shows t h6 4
. sults of accuracy and precision for laboratory analy ses in 1985 for EPA .
.,1 les, intralaboratory analyses, and interlaboratory cross-check analyses I s accuracy, 60.4 and 84.3 percent of the results were within 5 a nd 10 ,
~
1 Nht of the known values, respectively, with 90 t percent of all result-
.I e s 3 within the laboratory criteria of 15 percent For precision, 82 3 and , ,
" ' ' cent of the results were within 5 and 10 percent of the mean ,
r- .
5
' , - stely, with 100 percent of all results mooting the laboratm y criteria
\ent.
,f: , ;
1 .
a- ,
y -
t
- + 3 e- -
NA h
Table 4.1 EPA Interlaboratory and Intralaboratory Results - 1985 Accuracy Total Number 0 to 5% 0 to 10% 0 to 15%*
of Samples 743 449 626 718 5
(60.4%) '(84.3%) (96.6%)
i Precision Total Number 0 to 5% 0 to 10% 0 to 15%M of Samples ;
682 561 654 682 (82.3%) (95.9%) (100%)
OThis category also contair.s thosc samples having a verified zero concentration which were analyzed and found not to contain the isotope of interest.
- 5 6-
4.0 QUALITY ASSURANCE PPOGRAM Three separate Quality Assurance programs were performed during 1985 to demonstrate the validity of laboratory analyses by the Yankee Environmental Laboratory (YEL).
YEL participates in the epa Interlaboratory Comparison (cross-check) program for those species and matrices routinely analyzed by the laboratory.
This provides an independent check of accuracy and precision of the laboratory enalysis. When the results of the cross-check analysis fall outside of the control limit, an investigation is made to determine the cause o* the problem and corrective measures are taken.
YEL maintains an intralaboratory quality control program to assure the validity and reliability of the data. This program includes quality control of laboratory equipment, uss ef reference standards for calibration, determination of counting efficiencies and analysis of blank and spiked samples. The records of the quality control program are reviewed by the responsible cognizant individual, and corrective measures are taken whenever applicable.
A blind duplicate / replicate program is also used. Samples from five nuclear plants, including Maine Yankee, are prepared from split or homogenous media and sent to the laboratory for analysis. The results from this blind duplicate program are used to check for precision in laboratory analyses.
EPA Interlaboratory and Intralaboratory Results The Quality Assurance program implemented at the analytical laboratory F indicated good precision and accuracy in reported values. Table 4.1 shows the results of accuracy and precision for laboratory analyses in 1985 for EPA samples, intralaboratory analyses, and interlaboratory cross-check analyses.
For accuracy, 60.4 and 84.3 percent of the results were within 5 and 10 percent of the known values, respectively, with 96.6 percent of all results falling within the laboratory criteria of 15 percent. For precision, 82.3 and 95.9 percent of the results were within 5 and 10 percent of the mean, respectively, with 100 percent of all results meeting the laboratory criteria of 15 percent.
Table 4.1 EPA Interlaboratory and Intralaboratory Results - 1985 Accuracy Total Number 0 to 5% 0 to 10% 0 to 15%N of Samples 743 449 626 718 (60.4%) (84.3%) (96.6%)
Precision Total Number O to 5% 'O to 10% 0 to 15%*
of Samples 682 561 654 682 (82.3%) (95.9%) (100%)
OThis category also contains those samples having a verified zero concentration which were analyzed and found not to contain the isotope of interest.
- 5 6-
Blind Duplicate-Replicate Program A total of 57 paired samples were submitted for analysis during 1985.
The data base used for the duplicate analyses consisted of paired measurements of 26 gamma emitting radionuclides, H-3, Sr-89, Sr-90, low level I-131 and gross beta. A dual level crite-ia for agreement was established. If the paired measurements fall within i 15 percent of their average value, then agreemont between the measurerr.ents has been met. If the value falls outside of the i 15 percent, then a two standard deviation range (95 percent confidence level) is established .or each of the analyses. If the ranges oeerlap, agreement is obtained.
One thousand four hundred and forty-four paired duplicate measurements were analyzed for 1985. A total of 99.7 percent of all measurements fell within the established criteria discussed above. The five measurements that did not neet the criteria were measurements of Np-239 in groundwater, Sb-124 in groundwater, Se-75 in seawater, Be-7 in marine algae, and Sr-90 in milk.
All but the Sr-90 were single measurements in a 26-radionuclide gamma spectrometry analysis. The five duplicate measurements represent 0.3 percent of all the blind duplicate paired measurements made during 1985. In the first three cases, the radionuclide in question was not present at a detectable level in the sample, and in the last two cases it was. In all cases, a three standard deviation acceptance criteria was met. With respect to the Sr-90 analysis, a reanalysis met the acceptance criteria. The reason for the initial failing is currently under investigation. No trend was evident with respect to repeated failings of measurements for the above radionuclides.
k Q__ .
5.0 MILCt COW CESBSUS A census of all milk cows within at 5-mile radius of the plant was
' carried out in May 1985 and November 1985. Table 5.1 indicates the results of this survey. Only those farms having cows in 1985 are listed. There were no changes in milk sampling locations during 1985.
Taole 5.1 1985 Milk Ccw Census Results Number of Milking Cows May November Farm Location 1,985 1985 Sherwood Baker Woolwich 3 3 1.2 Km, 2680 Lester Holbrook Woolwich , 1 1 7.1 Km, 2690 Wayne Leeman Woolwich 8 5 7.9 Km, 2280 David Hodgd - Woolwich 1 0 7.4 Km, 2740 Leigh Straw Newesstle 3 3 9.0 Km, 41 0 Ronald Hodgdon Wiscasset 0 1 2.1 Km, 3560
)
6.0
SUMMARY
During 1985, the radiological environmental monitoring program at Maine Yankee showed detectable levels of man-made radionuclides in samples of row milk, sediment, estuary water, and marine algae from the Maine Yankee off-site l
environment. Each of these is summarized below. In no case were the levels of those radionuclides possibly related to plant emissions high enough to result in public intake in excess of one percent of those that could result from continuous eFposure to the Concentration values listed in Appendix 0, Table II, part 20, Title 10 of the Code of Federal Regulations.
The Cs-137 and Cs-134 levels detected in sediment were determined to be the result of a combination of nuclear weapons testing fallout and early piant operation (prior to the installation of a diffuser for liquid effluents), and have been discussed in previous reports. H-3 was detected in two estuary water samples at the plant discharge outfall and is apparently due to plant operations. Marine algae samples collected during June and July from t he control location showed detectable levels of I-131. An investigation showed that the I-131 entered the area from the sewage treatment plant outfall in Boothbay Harbor, and was not related to plant operations.
Strontium-90 and Cs-137 were detected in all milk samples. These levels were similar to those found in the past and have previously been shown to originate from nuclear weapons testing fallout and to vary from farm to farm primarily as a result of differences in the animals' diets.
k
\ _
OEFERENCES
- 1. USNRC Regulatory Guide 1.109, " Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluatienj Compliance with 10CFR50, Appendix 1", 1977.
- 2. Annual Radiological Environmental Monitoring Report, 1984. Maine Yankee Atomic Power Company.
- 3. USNRC Radiological Assessment Branch Technical Position, Revision 1, November 1979.
_ _ . - _ ..