Text

Annual Radiological Environ Operating Rept,Environ Radiation Monitoring Program,Jan-Dec 1985
	ML20199E090
Person / Time
Site:	Cooper
Issue date:	12/31/1985
From:	Norton J; TELEDYNE ISOTOPES
To:	;
Shared Package
ML20199E088	List: ML20199E090; NLS8600093, Forwards Annual Radiological Environ Operating Rept,Environ Radiation Monitoring Program,Jan-Dec 1985, Per Rev 4 to Reg Guide 10.1;
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	Download: ML20199E090 (67)
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Nebraska Public Power District Cooper Nuclear Station L

i Annual Radiological Environmental L Operating Report r

Environmental Radiation Monitoring Program January 1,1985 - December 31,1985 L

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USNRC Docket Number 50-298

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m Prepared by TELEDYNE ISOTOPES l06032405238 FDR ADOCK 0500 8

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GENERAL OFFICE

" S Nebraska Public Power District " "7EFE%sen"^ea^ **]'}*

NLS8600093 March 14, 1986 Mr. Robert D. Martin Regional Administrator U.S. Nuclear Regulatory Cc= mission Region IV 611 Ryan Plaza Drive Suite 1000 Arlington, Texas 76011

Dear Mr. Martin:

Subject:

Annual Radiological Environmental Operating Report Cooper Nuclear Station NRC Docket No. 50-298, DPR-46 in accordance with paragraph 5.4.la(2) of the Cooper Nuclear Station Environ = ental Technical Specifications, the Nebraska Public Power District submits the Cooper Nuclear Station Annual Radiological Environmental Operating Report for the period January 1, 1985, through December 31, 1985.

We are enclosing one signed original of the report for your use and are transmitting 18 copies to the Document Control Desk in accordance with Regulatory Guide 10.1, Revision 4.

Should you have any questions or co=ments regarding this report, please contact my office.

Sincerely, tu Jay .. P11 ant Technical Staff Manager Nuclear Power Group JMP/dgl:cl Enclosure cc:L'6ocument Control Desk w/18 copies U.S. Nuclear Regulatory Commission Washington, D.C. 20555 i

NEBRASKA PUBLIC POWER DISTRICT COOPER NUCLEAR STATION ANNUAL

SUMMARY

REPORT 1985

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ENVIRONMENTAL RAOIATION MONITORING PROGRAM PREPARED BY TELEDYNE ISOTOPES 50 VAN BUREN AVENUE WESTWOOD, NEW JERSEY 07675 r , -l REPORT APPROVED BY: -,

.t i MANAGER)

ENVIRONMENTAL ANALYSIS DEPARTMENT

TABLE OF CONTENTS PAGE INTRODUCTION 1 LOCATION MAPS ~2 SAMPLING SCHEDULE AND ANALYSES 3 STATIONS AND RELATIVE POSITION TO ERP 6 LAND USE SURVEY 8 PART I REMPS TABLE - ANNUAL

SUMMARY

OF ALL STATIONS OF THE ISOTOPES 9 0F INTEREST WITH YEARLY AVERAGE ACTIVITY, NUMBER OF DETECTIONS, STATION WITH HIGHEST AVERAGE, AVERAGE OF CONTROL STATION AND INCLUSIVE DATES OF ANALYSES PART II DISCUSSION, IMPACT ON THE ENVIRONMENT AND STATISTICAL TABLES 32 FOR EACH QUARTER A and 8. AIR PARTICULATES - GROSS BETA - GROSS ALPHA 33 C. CHARC0AL FILTER, I-131 42

0. COMPOSITE OF AIR PARTICULATE FILTERS - GAMMA 47 E. FISH 50 F. MILK - NEAREST PRODUCER 53 G. MILK - OTHER PRODUCERS 56 H. F000 - BROAOLEAF VEGETATION 61

1. GROUND WATER 66 J. RIVER WATER 70 K. SHORELINE SEDIMENT 73 l L. THERM 0 LUMINESCENT 00SIMETERS 11

I. ' INTRODUCTION This report contains a complete tabulation of data collected during the period January to December 1985, for the operational Radiological Environ-mental Monitoring Program performed for the Cooper Nuclear Station (CNS) of the Nebraska Public Power District (NPPD) by Teledyne Isotopes. Samples were collected in the environs of CNS by NPPD and analyzed by the Teledyne Isotopes Laboratories in compliance with the Environmental Technical Specifi-cations, Appendix B of the Cooper Nuclear Station Operating License.

Cooper Nuclear St ation is located in Nemaha County in the southeast corner of Nebraska on the Missouri River. A portion of the site extends into Missouri. The reactor is a 778 megawatt boiling water reactor. Initial criticality was attained on February 21, 1974. The reactor reached 50% power on June 25, 1974 and 100% power on November 20, 1974 The reactor was shut down from September 15, 1984 to August 20, 1985 for replacement of the piping system. The unit was not in operation from October 5,1985 to November 22, 1985 because of difficulty with the turbine generators.

Radiological environmental monitoring began in 1971 before the plant became operational and has continued to the present. The program monitors radiation levels in air, terrestrial and aquatic environments. Samples are i collected by NPPD personnel. All are shipped for analysis to the con-tractor's laboratory where there exists special facilities required for measurements of extremely low levels of radioactivity. From 1971 through 1976 the contractor was Teledyne Isotopes, Westwood, New Jersey. NALCO Environmental Sciences assumed responsibility for the analyses January 1, 1977. On November 1,1978 Hazelton Environmental Sciences Corporation assumed responsibility for the program. Prior to November 1, 1978 Hazelton Environmental Sciences operated as NALCO Environmental Sciences. Teledyne Isotopes again assumed responsibility for the analyses effective January 1, 1979 through the present period, December 31, 1985.

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TABLE I NEBRASKA PUBLIC POWER DISTRICT COOPER NUCLEAR STATION ENVIRONMENTAL RADIATION SURVEILLANCE PROGRAM SAMPLING SCilEDULE AND ANALYSES Sample Description Frequency Station Radioanalyses and Comments Airborne 'Particulates Once per 1-10 (Continuous samples) 7 days Cross alpha Cross beta Gamma spectrum analysis on:

1. Quarterly composite each station

2. Elevated beta levels (>300 dpm/ sample)

Airborne - Ila11de once per 1-10 (Continuous samples) 7 daya I-131 Hilk (Nearest Producers) Once per 61 1-131 (Low level) 15 days

Sr-90 Sr Monthly Composite and once Camma Spectrum - Monthly Composite per 31 Elemental Calcium - Monthly Composite days

River Water once per 12, 28 (Four (4) liter grab sample) 31 days Suspended - gross alpha Suspended - gross beta Dissolved - gross alpha Dissolved - gross beta Sr-90 Sr-89 Camma Spectrum - Quarterly Tritium (H-3) - Quarterly Bcckground Radiation once per 1-10, 20, 44 Thermoluminescent Dosimeters (TLD) exchanged and read 92 days 51, 56, 58, 59, out 66, 67, 71, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 94

TABLE 1 NEBRASKA PUBLIC POWER DISTRICT COOPER NUCLEAR STATION ENVIRONMENTAL RADIATI6N SURVEILLANCE PROGRAM SAMPLING SCHEDUI.E AND ANALYSES Sample Description Frequency Station Radioanalyses and Comments Cround Water once per !! and 47 (Four (4) liter grab sample) 92 days Cross alpha Cross beta Camma Spectrum Tritium (H-3)

Hilk - Other Producers once per 42, 75, 78 I-131 (Low level) 92 days Sr-90, Sr-89 Camma Spectrum Elemental Calcium on Aquatic Blota - Fish 2 times / year 28 and 35 (Summer and Fall)

Cross beta Sr-90, Sr-89 Camma Spectrum Shoreline Sediment 2 times / year 28 Camma Spectrum Food Products Monthly When 35, 92 I-131 Radioactive Analysis f Available and 93 Camma Spectrum -

l Conce per !$ days, peak pasture period, once per 31 days - rest of year 1

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TABLE 2 NE3RASKA PUBLIC POWER DISTRICT COOPER NUCLEAR STATION 3ROWNVILLE, NEBRASKA DISTANCE AND DIRECTION FROM THE ELEVATED RELEASE POINT (ERP) TO THE SAMPLE STATION LOCATIONS STATION DISTANCE DIRECTION NUMBER- (MILES) (DEGREES) CLASSIFICATION (*}

l .1 225 IND.

2 .75 225 IND 3 2.5 338 IND 4 3.0 43 IND 5 3.5 102 IND 6 3.0 165 IND 7 2.5 230 IND 8 2.5 260 IND 9 7.25 335 IND 10 10.0 160 IND

-11 .15 225 IND 12 .1 360 CON 13 .25 120 NA 14 .5 140 PO 15 .3 180 NA 16 .75 202 NA 17 1.5 235 PO 18 .8 270 NA 19 1.0 300 PO 20 .96 315 IND 21 .6 46 LPO 22 .7 95 NA 23 1.9 80 PO 24 3.0 97 PO 25 3.75 105 PO

~26 3.0 130 TO 27 3.0 143 NA 28 1.8 150 IND 29 3.0 170 NA 30 5.0 178 PO 31 2.75 222 NA 32 3.4 268 PO 33 2.8 302 PO 34 2.5 333 NA 35 2.0 350 IND and CON 36 3.6 335 PO 37 3.9 330 NA 38 4.0 360 NA 39 2.75 25 PO 40 3.9 37 PO 41 8.4 11 NA 42 12.85 156 IND 43 11.75 217 NA 44 10.25 270 CON 45 4.0 325 tfA 6

-TABLE 2 STATION DISTANCE DIRECTION NUMBER (MILES) (DECREES) CLASSIFICATION (*

46 24.75 153 NA 47 25.75 154 IND 48 5.6 332 NA 49 11.4 222 NA 50 1.1 270 NA 51 4.2 125 IND 52 7.4 79 NA 53 2.0 216 NA 54 5.2 320 NA 55 1.75 270 NA 56 1.9 118 IND 57 6.6 208 NA 58 1.1 219 IND 59 1.0 189 IND 60 8.4 42 NA 61 3.5 326 IND 62 1.5 225 NA 63 5.0 56 NA 64 2.25 99 ~ NA 65 1.1 305 NA 66 4.5 200 IND 67 4.75 325 IND 68 3.4 270 NA 69 3.5 31 NA 70 3.5 36 NA 71 4.25 71 IND 72 3.75 39 NA 73 10.0 ~35 NA 74 2.4 270 NA 75 9.0 180 IND 76 5.3 212 NA 77 2.25 223 NA 78 8.2 74 IND 79 0.85 299 IND 80 0.75 284 IND al 0.80 265 IND 82 0.80 176 IND 83 4.4 tag I30 84 4.4 297 IND SS 3.1 3 IND 86 4.6 16 IND 87 1.75 20 IND 88 1.75 63 IND 89 2.0 86 IND 90 2.25 134 IND 91 6.9 5'4 IND 92 10.5 90 CCN 93 1.25 189 IND 94 3.5 108 IND

(*) Classification Codes: IND = indicator; CON = control; P0 = pre-operational samoling site not used in 1981-82 sampling program; NA = not active as of January 1,1985.

7

Survey Conducted: 07/02/85 By: D. G. Luce and D. K. Saktnhus Land Use Survey 0-3 Miles Sector Nearest Resident Nearest Garden Nearest Milk Animal A 3.0 Miles 5.00- None None 3 2.4 Miles 14.00- 2.7 Miles' 13.00 None C .

None None None D' 1.7 Miles 62.00 None None E 1.8 Miles 92.5 1.8 Miles 92.50 None F 2.0 Miles 116.0 2.0 Miles 116.0 None G 2.2 Miles 133.5 2.2 Miles 133.50 None H 'None None None J None None None K 1.8 Miles 210.00 None. None L~ 1.3 Miles 219.00 1.3 Miles 219.00 None M 1.3 Miles 251.0 1.3 Miles 251.00 None N 1.0 Mile 266.50 1.0 Mile 266.50 None P 1.6 Miles 293.50 1.6 Miles 293.50 None Q 0.9 Mile 307.0 2.7 Miles 316.0 None R 1.9 Miles 335.0 1.9 Miles 335.00- None 8

PART I Annual Summary ~ of All Stations of the Isotopes of Interest with Average

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Activity, Number of Detections per total, the Station with the Highest Average Activity, the Activity of the Control Station and the Inclusive Dates of Analyses.

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RAD'0 LOGICAL ENVIRONMENIAL MONITORING PROGRAM

SUMMARY

PAIHWAY - AIR 8ORNE COMPIL ATION . ANNUAL

SUMMARY

SAMPLE - AIR PARilCULATE FILIERS NEBHASKA PUBLIC POWER DISINICT CONTR01 . COOPER NUCLEAR stall 0N UNITS - PCl/CU. M ANALVSIS NO LIMIT OF ALL INDICAICR SAMPLES LOCAil0N WITH HIGHESI MEAN CONIROL LOCAi!ON NON. REPORilNG PERIOD DETECTION MEAN X E.00 MEAN X E.00 MFAN X E.00 R0uilNE MEAN X E.00 RANGE stall 0N FRACil0N RANGE RANGE FRACTION stall 0N DESCRIPTION FNACTION GR.A 513 0.00200 0.00200 0.00244 0.00113 - 0 01/02/e5-12/31/85 0.00244 01 043/052 0.00100 0.0090 381/513 stall 0N 01 - 0.1 Mi, 225 DEG. IND.

GR.8 513 0.00300 0.0266 0.0382 0.0222 - 0.0382 01 0 01/02/85-12/31/85 052/052 0.0100 0.2500 512/513 STATION 01 0.1 MI. 225 OfG. IND.

SAMPLE 7 LI 0.00000 LT 0.00000 0.00000 y3 000/006 0 01/02/85-10/15/85 Station 03 10/08-10/15 AP Station not operating, pump failure.

St at ion 05 07/02-07/09 Av vsbrated off s am p l e r .

St ation 05 08/06 08/13 Pump failure 08/13 08/20, 08/20 08/27, 08/21 09/03 .- No AP. Station out of service.

St at ion 08 08/13 08/20 AP lost in the field.

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RADIOLOGICAL,fP.VIRONMENTAL MONITORING PROGRAM

SUMMARY

PATHWAT . AIRBORNE SAMPLE CHARC0AL' FILTERS COMPILAIION . ANNUAL

SUMMARY

NEBRASKA PUBLIC POWER OISINICI CON 1ROL .

UNITS . PCl/CU. M COOPER NUCLEAR stall 0N ANALYSIS NO LIMIT OF ALL INDICATOR SAMPLES LOCATION WITH HIGHEST MEAN CONTROL LOCATION DETECTION MEAN X E.00 NON. REPORilNG PERIGO MEAN X E.00 MEAN X E-00 MEAN X E-00 ROUTINE RANGE STATION FRACTION -RANGE FRACTION RANGE STA110N D FRACTION

......................... ..................... ..................ESCRIPTION 1 131 513 0.03000 LT 0.0500 LT 0.04000.LT 0.0500 0 01/02/85 12/31/85 000/513 SAMPLE 7 0.00000 LT 0.00000.LT 0.00000 0 02/19/85 10/15/85 000/007 Station 01 02/19 02/26, 03/12 03/19 Charcoal Filters lost in transit.

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Station 03 10/08 10/15 Charcoal Filter missing due to pump failure.

c$ Station 05 08/06 08/13 Pump failure 08/13 08/20, 08/20 08/27, 08/27-09/03 .- No Charcoal. Station out of service.

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RADIOLOGICAL ENVIRCNMENIAL MONITORING PROGRAM SUMMARv FATHb41- INGEST 10N COMPIL ATION - ANhUAL SUMMAPV SAPFLE - f 85H NE8RAssA PUBLIC POWER DI 5IR EC T CON 1ROL - CouPER NUCLEAR STATION tkIIS - PCI/CM WET AkALYSIS NO limit Of ALL IND IC ATOR SAMPLES L tC A T ICN blIH HIGHEST PEAh DETECTION CONiMOL 10CAIION NON- REPORIING PERICD~

MFAN X E-00 MEAN N E-00 ME A N N E-00 800TthE MEAN X E-00 RANGE 51 ATIDN f p ACTICh FAhGE FANGE FRACTION ST A TI ON CESCRIPIICN FR ACil0N GR-e 10 0.250 4.8 4.9 4.E 0 05/21/85-10/09/85 4.9 28 OC6/006 3.9 -

6.2 j 010/010 SIATION 28 - 1.8 Pl. 150 CEG. IND.

i 58-89 10 0.0300 11 C.0200 Li 0.0100 -ti 0.0200 0 05/21/85-10/08/85 CCGt010 SR-90 10 0.0300 C.0126 0.0135 O.Oll i - 0.0135 0 05/21/u5-10/08/85

,. 35 002/004 0.0130 - 0.0140 PO 00e/010 SIAtl0N 35 - 2.0 Pl. 350 DEG. CCN.

E-40 to 0.4700 3.03 3.32 2.T4 -

3.32 35 0 05/28 /85-10/08/e5 004/004 2.15 -

4.5l CIC/CIO SIATIch 35 - 2.0 Pl.-150 [t G . (ON .

1-135 10 0.03100 Li C.05000 LT 0.05000- t 1 0.05000 0 05/28/85-10/08/85 000/010

( 5-13 F 10 -0.03100 LI C.01000 Li 0. 01000- L i 0.01000 0 05/21/85-10/Os#85 000/0I0 T F-228 10 0.09300 0.04960 0.04940 0.04960- 0.04960 35 005/004 0.04960-0 05/21/85-10/08/85 0.04560 00l/030 SIATION 35 - 2.0 Pl. 350 OtG. (CN.

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RADIOLOGICAL ENVIROOMENTAL COMITORING PROGRAM

SUMMARY

PATHWAY . INGESTION COMPILAllON - ANNUAL

SUMMARY

SAMPLE - MILK. NEAREST PRODUCER CONTROL . NE8RASKA PUBLIC POWER DISTRICT UNITS - PCl/ LITER COOPER NUCLEAR STATION ANALY$l$ NO LIMIT OF ALL INDICATOR SAMPLES LOCATION WITH HIGHEST MEAN CONTROL LOCAll0N NON. REPORTING PERICO DETECil0N MEAN X E-00 MEAN K E.00 MEAN X E-00 RANGE MEAN X E.00 .ROUilNE STATION FRACTION RANGE RANGE FRACil0N STATION DESCRIPil0N

......................... ..................... ..................................... .RACil0N F CA MG/l 14 2.3

.l.9 3.6 0 01/09/85 12/03/85 014/014 I.131 14 0.780 Li 0.400- BY CHEMICAL SEPARAil0N Li 0.200 .L1 0.400 O 01/09/85 12/03/85' 000/021 SR-89 14 2.0 LI 2.0 1.0 -Li 2.0 0 01/09/84 12/03/85 000/014 SR.90 14 1.4 1.8 0.96 -

2.9 0 01/09/85 12/03/85 011/011 U

K.40 14 140.0 1270. '

1050 .

1490. O 01/09/85 12/03/85 014/014 2

1 131 14 80.0 LT 80.00 8Y GAMMA SPECTROSCOPY Li 7.00 -Li 80.00 0 01/09/85 12/03/85 000/014 i .

Cs-137 14 9.00 LT F.00 LT 3.00 .Li 7.00 0 01/09/85-12/03/85 000/014 i

' RADIOL'0GICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

PATHWAY . INGEST 10N COMPILATION - ANNUAL

SUMMARY

--SAMPLE . MILK.0INER PRODUCERS NE8RASKA PUBLIC POWER DISTRICI CONTROL - COOPER NUCLEAR STATION UNIIS - PCI/ LITER AN AL YSI S NO LIMIT OF ALL INDICATOR SAMPLES. LOCATION WilH HIGHEST MEAN CONTROL LOCATION NON- REPORilNG PERIOD DETECTION MEAN N E.00 MEAN I E.00 MEAN x E.00 MEAN K E-00 ROUTINE RANGE stall 0N FRACTION RANGE RANGE FRACil0N STATION DESCRIPTION

......................... ..................... ..................................... FRACTION ..................... .............. .......

CA MG/l 11 2.2 2.6 . 0 01/15/85 10/15/85

. 2. 0 2.6 78 003/003 2.5 2.7 011/011 STAil0N 18 8.2 MI. 75 DEG. IND l-131 11 0.780 LT 0.400 BY CHEMICAL $[PARATION ti 0.300 .LT 0.400 .

0 01/15/85-10/15/85 000/011 SAMPLE I LT 0.00000 STATION 18 8.2 MI. 74 DEG. 0 04/16/85 l LT 0.00000 .LT 0.00000 NO . SAMPLE AVAIL ABL E SR-89 11 2.0 LT 2.G.

0 01/17/84-10/16/84 l.0 -Li 2.0 000/011 5

SR-90 11 1.4 2.1 . 2. 6 0 01/15/85 10/15/85 1.8 .

2.6 18 003/003 1.1 3.8 011/011 STATION 78 8.2 Mt. 74 OEG. IND 1

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011/011 stall 0N 75 9.0 MI 180 DEG. INO.

l I-131 11' 30.0 LT 30.0 BY GAMMA SPECTROSCOPY LT 10.0 .LT 30.0 0 01/15/85 10/15/85 000/011 Cs.137 11 9.00 Li 7.00

.LT '7.00 .LT 7.00 0 01/15/85 10/15/85 000/011

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i R A010 LOGIC AL ENVIRONMENI AL MONITORING PROGR AM SUMPARY FAIHbaV- INGEST 10N COMPILAil0N - AN6UAL

SUMMARY

NEBR ASE A PUBLIC POWER Ot 51R LC 1 SCMPL E -

VEGET AT ION - TERRESIRI AL -BROADLE AF CONTROL - COOPER NUCLEAM 51ATION hhlis - PCI/GM WEI AN AL YS IS NO LIMll 0F AL L INCICAICR SAPPLES L CC Ai t ch kITb. HIGHEST MEAN CCNTRCL LOC Ail 0N NON- RF PORilNG PE RICG OE TEC T ION MEAN x E-00 MEAh n E-00 MEAN N E-00 8001tNE MEAN x E-00 RANGE STATION FRACil( A FAhCE SANGE FRACTION ST ATI CN CESCRIPilCN FRACilON 1-133 62 LI C.200 '

LT 0.00 F00- t 1 0.200 HY CHLMICAl. SliPARATION '

000/062 EE-7 62 2.40 3.07 1.18 0 05/21/85-10/08/85 3.0F 92 019/019 0.3420 - 17.30 061/062 p-40 62 1.63 8.68 0 05/21/85-10/08/85 po 5.58 - 8.68 35 020/020 4.75 - 18.20 Un 062/062 514110N 35 - 2.0 Pl. 350 DEG. (CN.

I-131 62 Li 0.3000 ey t;AMMA splCTRoscopy Li 0.04000-11 0 05/21/85-10/08/85 0.3000 GCC/062 CS-13F 62 C.0!443 0.07310 0.026S0- -0.07310 53 C03/021 0 05/21/85-10/08/85 0.01680- 0.1590 006/062 88-226 62 C.4S30 0.4930 0.4530 - 0.4930 93 0 05/21/85-10/08/85 001/001 0.4930 - 0.4930 005/0e2 Th-228 62 0.le87 0.2436 0.03370- 0.2436 92 003/0t9 0.05780-0 05/28/85-10/08/85 0.5500 C01/Ce2

RADICLCGICAL ENVIRGNMEhiAt PONIICpthG PRCCRAM

SUMMARY

PATHb4V- HATER 80RNE COMPIL ATICN - ANhUAL SUNNARY 5 AMPLE - h&iER - GROUND NEBR A5K A PUBL IC POWER DI SIR IC I CONTROL -- CCOPER NUCLEAR STAi!ON

, Lhil5 - PCI/L ITER AhALV585 NO LIN!! Of ALL INDICAIOR 5A MPLE S LOC Ail 0h blIH HIGHE ST NE AN CCNip0L LOC All0N NON- SE P GR il hG PE R I Du DE TECT ION ME AN

E-00 NEAh N E-00 MEAN N E-00 ROUTENE NEAN N E-00 RANGE SIAil0N FRACilCN MANGE RANCF fpACTION

.......... ..- =_ --

STATIEN CE5CRIPilCN TRACIION G R- A 8 0.800 4.1 4.I O 01/22/85-10/22/85 4.T -

4.T 11 001/004 4.I -

4.T CGI/C08 SI AilCh II - 0.15 Pl. 225 CE G. INC.

(R-E 8 1.4 T.2 8.2 0 01/22/85-10/22/85 6.2 -

8.2 11 004/004 6.5 -

9.6 006/006 SIAll0N 11 - 0.15 Pl. 225 DEG. INC.

1-131 8 9.00 LT 20.00 LI 10.00 -11 20.00 0 01/22/85-10/22/85 000/008 i

C5-13T 8 9.00 LT E.CC Li T.00 -ti 8.00 0 01/22/85-10/22/85 l 000/008 p-3 8 140. 205.

i 263. 0 01/22/85-10/22/85 155. -

2E3. 47 003/004 180. - 110.

00!v00E SI Ail 0h 47 - 25.75 MI.154 CEC. INE.

RADIOLOGICAL ENVIRONMENIAL PChitCRING PRCCRAF SUP N ARY COMPIL ATION - ANAUAL

SUMMARY

NE8R A5K A PU6LIC POWER DI 51R IC I PAIHWAV- hATERBCRNE SAMP1E - W AT ER - R IVER CCNIROL - ST Ailoh 12 - 0.1 Pl. 340 CEG. CC (00PER NUCLEAR SIAll0N Latis - FCl/ LITER CCNTRCL LOCAll0N NCN- PEPORT ING PE RICD AhALYSIS h0 L I Mi l 0F ALL INCICAIOR SARPLES LCCATIOh bilH HIGHEST MEAh MEAN N E-00 ME Ah N E-00 MEAN N E-00 R00ilNE DETECil0N RANGE RANGE SIATION FRAC TICN RANGE MEAN X E-00 FRACil0N FRACTION STAil(N DESCRIPTICN

-=.................. .... ............... .... .................

3.9 3.9 39 0 01/08/85-12/17/85 CR-A 015 24 0.800

3. 2 4.7 3.2 - 4.7 3.5 - 3.9 12 004/012 -

006/024 51AII0h 12 - 0.1 Pl. 360 CEG. CCN. 004/082 3.9 28 002/012 3.2 - 4.7 SIAT10h 28 - 1.8 Pl. 150 CEG. IhC.

2.9 2.9 0 01/08/85-12/17/85 GR.A SUS 24 0.800 2.4 .

8.8 1.9 -

2.9 12 00F/012 0.F20 - 8.8 0. F 20 -

013/024 51 AII ON 12 - 0.1 Pl . 360 DEG. CCh. 007/012 N

8.5 8.5 0 01/08/85-12/17/85 CR-8 085 24 1.4 E.3 8.5 12 012/012 5.6 - 14.0 5.6 -

14.0 8.2 -

024/024 51ATION 12 - 0.1 Pl. 360 DEG. (CN. 012/012 6.6 6.2 0 01/08/85-12 /1 F/85 ER-8 $US 24 1.4 a.4 6.2 - 6.6 28 010/012 0.F50 -

31 0 0.990 - 26.0 020/024 STATION 28 - 1.8 Pl. 150 CEG. INC. 010/012 LT 2.0 0 Ot/08/85-12/ti/85 SR-u9 24 1.8 LT 2.0

-LI 2.0 LI 0.500 -LI 2.0 LI 2.0 000/024 000/012 C.900 LI 0.900 0 01/08/85-12/li/85 5R-90 24 0.930 Li LI 0.900 -Li 0.900 LI 0.200 -Li 'O.900 000/024 000/012 i

i e

l l

R ADI OL OGIC AL I NVIRONMENI AL HONil0 RING PROGRAH SUHMARY PAlHWAY . WAIERfl0RNE. COMPIL All0N . ANNUAL SUHHARY SAMPLE . RIVFR WAIER NIONASKA PullLIC POWIH DISINICI UNilS . PCI/CU..H CONIROL . SIAIION 12 - 0.1 Hl. 360 D(G. COOPER NUEL E AR SI AIION .

ANALYSIS NO LlHil Of ALL INDICAIOR SAMPLES L OCAIION WilH HIGHESI Mf AN CONIROL LOCAIION NON. RLPORIING PfH100 DEIECIION HEAN X E.00 NEAN X E-00 HEAN X E-00 NEAN X E.00 R0utlNE RANGE SIAIION FRACIION. RANGE FRAC 110N RANGE SIAll0N DESCHIPIION FRAC

......___.....___........ ...........______.... ..................................... .....IION ..............__ ............ .........

I-131 8 9 . 11 0 LI 300.0 LI 300.0 _LI 300.0 L1 300.0 0 01/08/85-12/17/85 LI 50.00 -Li 300.0 000/000 000/004

'Cs-137 8 9.00 L1 4.00 L1 4.00 0 01/08/05 12/17/85 L1 4.00 -L1 4.00 LI 3.00 -LI 4.00 000/008 000/004 i

H-3 8 140 225.' 250. 230. 0 01/08/85-12/17/85 220. .

230. 12 003/004 100. . 330. 100'. .

350.

005/008 SIAIION 12 _ 0.1 HI. 360 DEG. CON, s-a l

-m..-

m R ADIOLOGIC AL ENVIRChMENI AL MGNiiORING PROGRAM

SUMMARY

PAlbhAV- AQUATIC COMPIL ATICA - AhhuAL

SUMMARY

hE8R A5M A PLSL IC P0hER DI STRIC I SAMP1E - SHORELINE SLDIMENT CChip0L -

COOPER HuCLEAR.5 Tall 0N thlTS - PCl/GM DRY AhALV585 h0- LIMIT OF ALL lhCIC AICR SAMPLES LCC ATIch blIH HIGHESI MfAh CENIRGL LOCAllON NON- REPORilNG PERIGO DEIECilON MEAN x E-00 MEAh x E-00 ME Ah X E-00 ROUIINE MEAh a f-00 RahCE SI ATION FR AC it C A EAAGE SAhGE (RACil0N SI All LN DESCRIPil6N FRACilON eE-T 4 0.2 0.2340 0.2360 0 05/21/85-10/08/85 0.2 3t0 - 0.2360 28 GC1/004 0.2360 - 0.2340 001/004 SIATION 28 - 1.8 Mt. 150 DEG. IND.

0-40 4 0.4 14.52 16.52 16.52 -

16.52 28 004/004 0 05/21/85-10/08/85 16.50 -

16.50 p.

m 004/004 SIAil0N 28 - 1.8 Mt. 150 DEG. IhC.

P A- 5 4 4 0.08820 0.01820

"*02 0.01820- 0 05/21/85-10/08/85 0.01820 28 001/004 0.01820- 0.01820 005/004 SIATIOh 28 - 1.8 Pl.150 DEG. IhC.

CC-60 4 0.02 0.0'045 0.05045 0.05045- 0 05/21/85-10/08/85 0.05045 28 002/004 0.03600- 0.06490 CO2/004' S T All ch 28 - 1.8 Pl. 150 CEG. IhC.

1-131 4 0.1 LT 0.1000 0 05/21/85-10/08/85 LT 0.1000 -L I 0.1000 000/004 (5-134 4 0.03 C.00500 .

0.08500 0 05/21/85-10/0s/e5 0.08500- 0.08500 28 002/004 0.0F000- 0.10 00 002/004 SIAilch 28 - 1.8 Mt. 150 DEG. IND.

(5-13I 4 0.03 C.1065 0.1065 0 05/21/85-10/08/85 0.8065 - 0.1065 28 004/004 0.04600- 0.1850 004/004 SIAllah 28 - 1.8 Pl. 150 CEG. Iht.

i RA0lutCGICAL ENVIECNMENIAL PCNIICEING PROCRAM SUMMAEV FAlbhAV- AQUATIC COMPIL ATICA - AN6U AL SUMM AFV NEBR ASKA PUBLIC PuhER DI STRICI SAMP&E - Sil0 RELINE SEDINENT CChiROL - COOPIB NUCLEAR SIATION unli$ - PCI/GM DRV AhAL YS I S No LINIT Of ALL INDICATOR SAMPLES LCC All0h mlTH HIGHE 51 ME AN CONI ACL LOC All0N NON- REPORilNG PERICD DE TECi l0N MEAN N 0-00 MEAN N E-00 MEAh X E-00 ROUTINE MEAh X E-00 RANGf SIATION FRACIIEN BANGE RANGE FRACil0N STATICN CESCRIPflCh (SACil0N 94-226 4 0.1 2.22 2.22 0 05/21/d5-10/08/85 l 2.22 -

2.22 28 004/004 1.94 -

2.45 4

004/004 SIAllot 28 - 1.8 Pl. 150 CEG. Iho.

Ib-22e 4 0.02 1.12 1.12 0 05/21/65-10/08/n5 1.52 -

1.12 28 004/004 0.96F0 - 1.23 ro 004/004 SIATION 28 - 1.8 Pl. 150 CEG. IhC.

O i

1 I

e

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

PATHWAY - GAMMA EXPOSURE COMPILATION ANNUAI

SUMMARY

NE8RASKA PUBLIC POWER DISTRICT

' SAMPLE - ENVIRONMENTAL TLD CONTROL . COOPER NUCLEAR STATION UNITS - mR/ YEAR ANALYSIS NO LIMIT OF ALL INDICATOR SAMPLES LOCATION WITH HIGHEST MEAN CONTROL' LOCATION NON. : REPORTING PERIOD -

DETECTION MEAN X E-00 MEAN X E.00 MEAN X E.00 ROUTINE' MEAN X E 00 RANGE STATION FRACTION RANGE RANGE FRACTION STATION DESCRIPTION FRACTION TLD 125 2mR 0 01/04/85 01/03/86 Total 19.5 mR 169.2 mR 81.4 Exposure / year 70.5 169.2 . 01 004/004 44 004/004 125/128 STATION 01 0.1 MI 225 DEG. IND STAil0N 44 - 10.25 MI. 270 DEG. CON.

42.3 mR 20.4 Average 20.3 mR 27.5 66.2 .18.7 - 21.7 Exposure / 18.2- 21.9 01 004/004 44 004/004 quarter 031/032 STATION 01 0.1 MI 225 DEG. IND ro STATION 44 - 10.25 MI. 270 DEG. CON.

I

I l

i i

i PART II Discussion of Results, Impact on the Environment and Statistical Summary Arranged Quarterly for All Types of Samples Collected.

22

A and B. AIR PARTICULATE SAMPLES - GROSS BETA AND GROSS ALPHA (See Tables A A-4. B B-4)

STATIONS 01 to 10 Air particulates were collected continuously on membrane filters which were changed weekly at Stations 01 through 10. The filters were shipped to Teledyne Isotopes and analyzed fc gross beta and gross alpha activity. They were composited for each station quarterly and monitored for gamma activity (See Tables D-1 and D-2).

The average gross beta activity of all stations for-each quarter of 1984 and 1985 is sunmarized below:

1984 First Quarter 0.027 pCi/Cu. M.

Second Quarter 0.016 pCi/Cu..M.

Third Quarter 0.028 pCi/Cu. M.

Fourth Quarter 0.031 pCi/Cu. M.

Average 1984 0.0253 pCi/Cu. M.

1985 First Quarter 0.028 pCi/Cu. M.

Second Quarter 0.019 pCi/Cu. M.

Third Quarter 0.023 pCi/Cu. M.

Fourth Quarter 0.036 pCi/Cu. M.

Average 1985 0.0266 pCi/Cu. M.

The level of gross beta activity was at normal environmental levels in 1985 anc showed a common pattern of seasonal variation. There was an in-crease in gross beta levels of activity in November and December of the year shown on Table A-4. This same increase was noted in other areas of western United States and was probably due to natural phenomena.

The gross alpha activity (Tables B-1 through B-4) continues low and close to the limits of detection with a slight increase in November and December. This low gross alpha activity is probably due to alpha emitters found in soil and to cosmogenic radiation. The gross beta particulate levels in all of the stations are similar to other areas of the United States and i indicate no influence from the operations of the Cooper Nuclear Station (CNS) of the Nebraska Public Power District.

l 23

TTELEENNE ISOTOPES TABLE A-1 WEEKL Y COLLECTIONS FIRST QUARTER 1985 NEBRASKA PUBLIC POWER DISTRICT (JANUARV-MARCH)

COOPER NUCLEAR STATION EXPOSURE PA(HWAY - AIR 80RNE AIR PARilCULATE FILTERS

] pCl/Cu. M.

SAMPLE STATION MONTHLY

SUMMARY

MONTHLY

SUMMARY

NUCLIDE MONTHLY

SUMMARY

QUARTERLY

SUMMARY

NUMBER 01/02/85-01/29/85 01/29/85-02/26/85 02/26/05-04/02/85 01/02/85-04/02/85 AIR PARTICULATE 01 3.2 1 0.6 E-02 4.7 1 2.5'E-02 FILTERS 2.5 t 0.5 E-02 3.4 1 1.6 E-02 GROSS BE T A 02 2.8 1 0.7 E-02 3.5 1 2.1 E-02 1.8 1 0.3 E-02 2.6 t 1.3 E-02 03 2.6 1 0.6 E-02 3.5 t 1.9 E-02 1.1 1 0.6 E-02 2.5 t 1. 3 E-02 4

04 3.0 1 0.8 E-02 4.1 1 2.2 E-02 1.9 1 0.3 E-02 2.9 1 1.5 E-02

05 2.9 1 0.8 E-02 3.8 1 2.2 E-02 1.8 1 0.5 E-02 2.8 1 1.5 E-02 06 3.1,2 1.9 E-02 3.8 t 2.0 E-02 2.1 t 0.5 E-02 2.9 t 1.6 E-02 93 07 2.8 t 0.6 E-02 3.8 t 2.2 E-02 1.8't 0.5 E-02 2.7 1 1.4 E 08 2.7 1 0.7 E-02 3.5 1 2.0 E-02 1.6 1 0.3 E-02 2.5 1 1.4 E-02 09 2.7 1 0.6 E-02 4.0 1 2.3 E-02 1.8 1 0.4 E-02 2.7 1 1.5 E-02 10 2.7 1 0.7 E-02 3.6 1 1.9 E-02 1.7 2 0.2 E-02 2.6 1 1.3 E-02 AVERAGE' 01-10 2.8.1 0.8 E-02 3.8 1 1.9 E-02 1.9 1 0.5 E-02 2,8 t 1.4 E-02 ALL stall 0NS l x and s l

Grand x and s l

l I

WTELEDVMilSOTOPES TABLE A-2 WEEKLY COLLECil0NS SECONO QUARTER 1985 NE8RASKA PUBLIC POWER OISTRICT (APRIL -JUNE)

' COOPER NUCLEAR STATION EXPOSURE PATHWAY - AIR 80RNE AIR PARTICULATE FILTERS pCi/Cu. M..

SAMPLE STATION MONTHLY

SUMMARY

MONTHL Y

SUMMARY

MONTHLY

SUMMARY

-QUARTERLY

SUMMARY

NUCLIDE NUMBER 04/02/85 04/30/85 04/30/85-05/28/85 _ 05/28/85-07/02/85 04/02/85-07/02/85.

AIR PARTICULATE 01 2.4 t 0.3 E-02 2.0 2 0.7 E-02 FILTERS 1.8 i 0.4 E-02 2.1 1 0.5 E-02 GROSS BETA 02 2.0 t 0.2 E-02 2.2 1 0.3 E-02 1.9 1 0.4 E-02 2.0 t 0.3 E-02 03 l'.9 t 0.5 E-02 2.0 t 0.5 E-02 1.7 1 0.4 E-02 1.9 1 0.4 E-02 04 1.9 i 0.4 E-02 2.0 1 0.5 E-02 2.0 1 0.4 E-02 1.9 1 0.4 E-02 05 1.8 t 0.3 E-02 2.2 1 0.5 E-02 2.0 1 0.2 E-02 2.0 t 0. 3 E -02 06 1.9 1 0.4 E-02 1.9 i-0.5 E-02 2.0 t 0.4 E-02 1.9 1 0.4 E-02 07 1.8 1 0.2 E-02 1.5 t 0.5 E-02 1.9 1 0.4 E-02 1.7 1 0.4 E-02 08 1.6 1 0.3 E-02 2.0 t 0.5 E-02 2.0 1 0.3 E-02 1.9 2 0.4 E-02 09~ 1.9 1 0.3 E-02 2.3 1 0.8 E-02 2.0 1 0.2 E-02 2.0 t 0.5 E -02 to 1.7 t 0.3 E-02 2.0 1 0.5 E-02 1.9 1 0.4 E-02 1.8 1 0.4 E-02 AVERAGE 01-10 1.9.t 0.3 E-02 2.0 t 0.5 E-02 1.9 t 0.3 E -02 ALL STATIONS 1.9 i 0.4 E-02 I and S Grand I and s

c w

i TABLE A-3

' -WEEKLY COLLECTIONS NEBRASKA PUBLIC POWER DISTRICT THIRD QUARTER 1985 (JULY -- SEPTEMBER)

COOPER NUCLEAR STATION EXPOSURE PATHWAY - AIRBORNE l

AIR PARTICULATE FILTERS pCl/Cu. M.

SAMPLE stall 0N MONTHLY

SUMMARY

MONTHLY

SUMMARY

NUCLIOE NUMBER MONTHLY

SUMMARY

07/02/85-07/30/85 07/30/85-09/03/85 09/03/85-10/01/85 QUARIERLY

SUMMARY

01/02/85-10/01/85 AIR PARTICUL ATE 01 2.2 1 0.9 E-02 FILTERS 2.5 1 0.9 E-02 2.2 t 0.7 E-02 2.3 2 0.8 E-02 GROSS BEIA 02 2.7 1 0.a E-02 2.2 1 0.6'E-02 14 t 0.3 E-02 2.1 2 0.7 E-02 03 2.4 1 0.2 E-02 2.2 1 0.1 E-02 1.7 2 0.2 E-02 2.1 2 0.5 E-02 04 2.9 1 0.2 E-02 2.6 t 1.1 E-02 1.9 1 0.4 E-02 - 2.5 1 0.8 E-02

@$ 05 3.0 1 0.2 E-02 2.2 1 0.3 E-02 1.7 1 0.4 E-02 2.2 1 0.7 E-02 06 (a) (b) 2.8 1 0.2 E-02 2.5 t 0.9 E-02 1.1 1 0.3 E-02 2.3 1 0.7 E-02 07 2.7 1 0.3 E-02 2.6 1 0.7 E-02 1.9 2 0.6 E-02 2.4 1 0.6 E-02 08 3.0 t 0.3 E-02 3.2 1 0.7 E-02 2.0 t 0.6 E-02 2.7 1 0.7 E-02 09 2.7 t 0.2 E-02 -(c)-

3.3 1 1.9 E-02 1.9 2 0.6 E-02 2.7 1 1. 3 E-02 10 2.6 1 0.2 E-02 2.1 1 0.6 E-02 1.3.1 0.5 E-02 2.0 1 0.7 E-02 AVERAGE 01-10 2.7 t 0.4 E-02 2.5 t 1.0 E'-02 ALL STATIONS 1.8 1 0.5 E-02 2.3 1 0.8 E-02 x and s Grand i and s (a) No sample at station 05. 07/02-07/09 AP vibrated off pump.

(b) St ation 05 Pump f ailure 08/06-08/13; 08/13-08/20, 08/20-08/27, 08/27-08/09/03, no AP Station out of-service.

(c) St at ion 08. 08/13-08/20, AP lost in field.

I TABLE A-4 WEEKLY COLLECil0NS FOUNIH QUARTER 1985 NEBRASKA PUBLIC POWER DISTRICT (OCTOBER -- DECEMBER)

COOPER NUCLEAR STAil0N LXPOSURE PATHWAY - AIRBORNE AIR PARTICULATE FILTERS pCl/Cu. M.

SAMPLE STATION MONTHLY

SUMMARY

MONTHLY

SUMMARY

MONTHLY

SUMMARY

QUARTERLY

SUMMARY

NUCLIDE NUMBER 10/01/85-10/29/85 10/29/85-12/03/85 12/03/85-12/31/85

10/01/85-12/31/85 AIR PARTICUL ATE 01 4.8 1 2.6 E-02 1.2 1 0.9 E-01 FILIERS 5.2 t 3.1 E-02 7.5 t 6.2 E-02 GROSS BETA 02 1.8 1 0.1 E-02 3.0 1 0.8 E-02 1.6 t 1.1 E-02 2.2 t 1.0 E-02 03 1.9 1 0.6 E-02 3.6 t 1.6 E-02 4.1 1 2.6 [-02 3.3 1 1.9 E-02 i

(a) 04 2.1 t 0.5 E-02 3.9 t 1.9 E-02 4.1 1 2.2 E-02 3.4 t 1.8 E-02 na 05 N 1.9 t 0.6 E-02 3.4 2 1.7 E-02 3.9 1 2.1 E-02 3.1 1 1.7 E-02 06 2.0.1 0.5 E-02 4.5 t 1.7 E-02 5.0 1 2.9 E-02 18 t 2 2 E-02 07 2.0 1 0.5 E-02 4.0 t 1.7 E-02 4.7 1 2.7 E-02 3.6 1 2.0 E-02

] 08 2.4 1 0.6 E-02 3.5 1.1.5 E-02 3.5 t 2.3 E-02 3.1 1 1.6 E-02 09 2.0 t 0.5 E-02 3.6 t 1.7 E-02 4.0 1 2.3 E-02 3.2 t 1.8 E-02 10 1.3 1 0.4 E-02 3.3 2 1.5 E-02 3.5 t 2.0 E-02 2.7 t 1.7 E-02 AVERAGE 01-10 2.2 t 1.2 E-02 4.4 1 3.7 E-02 ALL STAil0NS 4.0 t 2.3 E-02 3.6 1 2.9 E-02 X and $

Grand i and S (a) The pumpair particulate filter for 10/08-10/15 for Station 03 was not collected; the station was out of service hecause of failure.

I 1

WTELEDVNE ISOTOPES TABL E 8-1 WEEKLV COLLECil'ONS flRST QUARTER 1985 NE8RASKA PUBLIC POWER DISTRICT (JANUARY-MARCH)

COOPER NUCLEAR STATION EXPOSURE PATHWAY - AIRBORNE AIR PARTICULATE FILIERS pCi/Cu. M.

SAMPLE STAil0N MONTHLV

SUMMARY

MONTHLY

SUMMARY

MONTHLY

SUMMARY

NUELIOE QUARTERLY

SUMMARY

a NUMBER 01/02/85-01/29/85 01/29/85-02/26/85 02/26/85 04/02/85 01/02/85-04/02/85 AIR PARTICULATE 01 2.5 t 0.4 E-03 3.3 1.1.6 E-03 FILTERS 2.3 1 1.2 E-03 2.7 1 1.2 E-03 GROSS ALPHA 02 1.7 1 0.4 E-03 2.7 1 1.7 E-03 1.3 1 0.3 E-03 1.9 1 1.1 E-03 03 1.4 t 0.5 E-03 2.5 1 2.1 E-03 1.7 t 0.7 E-03 1.8 i 1.2 E-03 04 1.8 1 0.3 E-03 3.1 1 2.3 E-03 1.7 t 0.6 E-03 2.2 1 1.4 E-03 05 2.0 1 0.6 E-03 2.8 i 1.5 E-03 1.6 1 0.5 E-03 2.1 t 1.0 E-03 06 2.0 t.l.3 E-03 2.9 1 2.0 E-03 1.6 1 0.3 E-03 2.1 1 1.3 E-03 n, 07 2.1 1 0.9 E-03 3.0 t 2.4 E-03 1.2 1 0.3 E-03 2.0 t 1.5 E-03 os 08 1.3 1 0.5 E-03 2.9 t 2.0 E-03 1.1 1 0.3 E-03 1.7 1 1.3 E-03 09 1.6 1 0.7 E-03 3.1 1 1.5 E-03 1.2 t 0.3 E-03 1.9 1 1.2 E-03 to 1.8 t 0.5 E-03 3.2 1 2.3 E-03 1.3 1 0.4 E-03 2.0 t 1.5 E-03

.I AVERAGE 01-10 1.8 1 0.7 E-03 ALL STATIONS 2.9 1 1.7 E 1.5 1 0.6 E-03 2.0 t ~ 1.3 E-03 I and s Grand I and s l'

i l

= - - - - - - . - . _ . - - - , - - - - - - - - --

WTELEDVpE ISOTOPES TABLE 8-2* ' WEEKLY COLLECil005 SECOND QUARTER 1985 NE8HASKA PUBLIC POWER DISTRICT (APRIL - JUNE)

COOPER NUCLEAR STATION EXPOSURE PATHWAY - AIR 8ORNE AIR PARTICULATE FILTERS pCl/Cu. M.

SAMPLE STATION MONTHLY

SUMMARY

MONTHLY

SUMMARY

MONIHLY

SUMMARY

QUARTERLY

SUMMARY

NUCLIDE NUMBER 04/02/85-04/30/85 04/30/85-05/28/85 05/28/85-01/02/85 04/02/85-07/02/85 AIR PARilCULATE 01 2.4 1 1.2 E-03 2.0 1 0.7 E-03 2.5 t 0.8 E-03 FILTERS .2.3

0.9 E-03 GROSS ALPHA 02 2.5 t 2.3 E-03 1.7 1 0.9 E-03 1.5 1 0.5 E-03 1.9 1 1.4 E-03 03 1.5 t 0.4 E-03 1.4 1 0.2 E-03 1.8 1 0.9 E-03 1.6 1 0.6 E-03 04 1.9 1 0.6 E-03 1.6 t 0.5 E-03 1.8 1 0.4 E-03 1.8 1 0.5 E-03 l 05 2.8 t 2.2 E-03 1.8 1 0.G E-03 2.1 1 0.6 E-03 l

2.2 1 1.3 E -03 06 1.6 t'0,5 E-03 1.1 1 0.9 E-03 l 2.0 t 1.0 E-03 1.8 t 0.8 E-03 p, 07 1.6 t 0.5 E-03 1.2 1 0.3 E-03 2.1 1 0.5 E-03 1.7 t 0.6 E-03 08 1.3 t 0.3 E-03 1.7 1 0.6 E-03 1.9 1 0.6 E-03 1.6 1 0.5 E-03 09 2.0 t 0.8 E-03 2.0 t 0.8 E-03 1.9 t 1.0 E-03 2.0 t 0.8 E-03 10 1.3 1 0.7 E-03 1.9 1 0.4 E-03 2.0 1 0.8 E-03 1.7 1 0.1 E-03 AVERAGE 01-10 1.9 t ' 1.1 E-03 1.7 1 0.6 E-03 ALL STATIONS 2.0 t 0.7 E-03 1.9 1 0.8 E-03 I and s Grand I and s

TABLE 8-3 WEEKLY COLLECil0NS THIRD QUARTER 1985 NE8RASKA PUBLIC POWER OISTRICT (JULY - SEPIEMBER)

COOPER NUCLEAR STATION EXPOSURE PATHWAY - AIRBORNE AIR PARTICULATE FILTERS

.pC1/Cu. M.

SAMPLE STAil0N MONTHLY

SUMMARY

MONTHLY

SUMMARY

NUCLIDE MONTHLY

SUMMARY

QUARIERLY

SUMMARY

NUMBER _ 07/02/85-07/30/85 07/30/85-09/03/85 09/03/85-10/01/85 07/02/85-10/01/85 AIR PARTICULATE 01 1.9 t 0.7 E-03 1.8 1 0.6 E-03 FILTERS 1.4 1 0.4 E-03 1.7 1 0.6 E-03 GROSS ALPHA 02 2.0 t 0.7 E-03 1.5 t 0.7 E-03 1,2 1 0.5 E-03 1.5 1 0.6 E-03 1 03 1.8 t 0.6 E-03 1

'l.9 1 0.3 E-03 1.3 1 0. 3 E-03 1.7

0.5 E-03 'l

04. 2.2 t 0.8 E-03 1.7 t 0.3 E-03 1.4 1 0.4 E-03 1.8.1 0.6 E-03 L) 05 ca 2.0 t 0.9 E-03 1.2 1 0.9 E-03 1.5 t 0.6 E-03 1.7 t 0.7 E-03 (a) (b) 06 2.4 t 1.5 E-03 1.8 2 0.4 E-03 1.5 2 0.6 E-03 1.9 t 0.9 E-03 07 1.9 1 0.1 E-03 2.0 1 0.7 E-03 1.7 1 0.8 E-03 1.9 i d.6 E-03 08 2.0 t 0.5 E-03 2.8 t 1.2 E-03 1.8 1 0.6 E-03 2.2 1 0.9 E-03 09 (c) 2.3 t 0.3 E-02 1.1 1 0.6 E 1.3 1 0.5 E-03 1.8 1 0.6 E-03 10 2.3 t 0.7 E-02 2.0 t 0.4 E-03 1.3 2 0.4 E-03 1.8 t 0.6 E-03 AVERAGE 01-10 2.1 1 0.7 E-02 1.9 t 0.6 E-03 1.4 1 0.5 E-03 ALL STATIONS 1.8 1 0.7-E-03 i and s Grand i and.s (a) No Air Particulate. Filter at Station 05, 07/02-01/09, AP vibrated off sampling device.

(b) Station 05, timp failure; 08/06-08/13; no air filter 08/13-08/20, 08/20-08/27, 08/27 09/23, Station out of service.

(c) <No Air Particulate filter Station 08 for 08/13-08/20, AP lost in field.

. m - , . - - -

TABLE'8-4 WEEKLY COLLEdil0NS ,

FOURIH QUARTER 1985 NE8RASKA PUBLIC POWER DISTRICT (OCTOBER-0ECEMBER)

COOPER NUCLEAR STATION EXPOSURE PATHWAY - AIRBORNE i AIR PARTICULATE FILTERS pCl/Cu. M.

SAMPLE STATION MONIHLY

SUMMARY

NUCLIDE MONTHLY

SUMMARY

MONIHLY

SUMMARY

QUARTERLY

SUMMARY

NUMBER 10/01/85-10/29/85 10/29/85-12/03/85 12/03/85-12/31/85 10/01/85-12/31/85 AIR PARTICULATE 01 1.6 1 0.5 E-03 4.5 1 3.0 E-03 FILTERS. (a) 2.8 t 1.3 E-03 3.1 1 2.3 E-03 GROSS ALPHA 02 1.2 2 0.5 E-03 2.3 1 1.2 E-03 1.2 2 0.2 E-03 1.6 1 0.9 E-03 03 1.5 1 0.5 E-03 3.6 2 2.5 E-03 2.5 1 1.0 E-03 2.6 t 1.8 E-03 04 1.2 2 0.3 E-03 3.4 i 3.2 E-03 2.4 1 1.1 E-03 2.5 1 2.2 E-03 og 05 1.5 t 0.5.E-03 3.6 t 2.5 E-03 2.5 t 1.0 E-03 2.6 t 1.8 E-03 06 1.9 1 1.1 E-03 4.2 1 4.0 E-03 2.6 2 1.1 E-03 3.0 1 2.6 E-03 07 1.6 1 0.9 E-03 2.9 t 2.3 E-03 2.7 1 1.2 E-03 2.4 t l.6 E-01 08 1.5 1 0.5 E-03 2.4 1 1.1 E-03 2.1 t 0.8 E-03 2.0 t 0.9 E-01 09 1.5 1 0.1 E-03 2.0 t 1.0 E-03 2.6

l.0 E-03

. 2.0 t 1.0 E-03 10 1.3 1 0.1 E-03 2.0

1.0 E-03 2.2 1 0.9 E-03 1. :4 t 0.9 E-03 4

AVERAGE 01-10 1.4 t 0.6 E-03 3.1 t 2.4 E-03 ALL STATIONS 2.3 1 1.0 E-03 2.3 1 1.8 E-03 I and s Grand i and 5 (a) No Air Particulate Filter for Station 03 10/08-10/15, Station not operating, pump failure.

C. AIR RADI0 IODINE - CHARCOAL FILTERS (See T. ables C-1 through C-4)

STATIONS 01 to 10 Charcoal filters used in series with air particulate filters were col-lected weekly during _1985 at stations 01 through 10 and monitored for radio-iodine,

~

Tables C-1 through C-4 show the average monthly and quarterly results for each station and the average for all.10 stations. No airborne I-131 was detected; all results were at or below the normal level of detection.

This indicated that no airborne releases of I-131 to the atmosphere occurred at the Cooper Nuclear Station.

i 32

._ _ .~ ._, _. . ._ . -

./

TABLE C-1 WEEKL Y COLLECTIONS FIRST QUARTER 1985 NEBRASKA PUBLIC POWER DISTRICT (JANUARY-MARCH)

COOPER NUCLEAR STAil0N EXPOSURE PATHWAY - AIRBORNE CHARC0AL FILTERS pct /Cu, M.

SAMPLE STATION MONTHLY

SUMMARY

MONTHLY

SUMMARY

MONIHLY $UMMARY QUARTERLT

SUMMARY

NUEllDE NUMBER 01/02/85-01/29/85 01/29/85-02/26/85 DET./

02/26/85-04/02/85 01/02/85-04/02/85 TOTAL RANGE CHARC0AL 01 L.I. 4 E-02 L.T. '5. E-02 L.I. 4. E-02 5. E-02 0/11 FILTERS (a) (a)

L.T. (L.T.2.-L.T.5.)E-02 1-111 02 L.T. 4. E-02 L.T. 5. E-02 L.T. . 4. E-02 L.T. 5. .E-02 0/13 (L.T.2.-L.I.5.)E-02 03 L.T. 4. E-02 5. E-02 L.I. L.T. 4. E-02 L.T. 5. E-02 0/13 (L.T.2.-L.T.5.)E-02 04 L.T. 4. E-02 5. E-02 1

L.T. L.T. 4. E-02 L.T. 5. E-02 0/13 (L.T.2.-L.T.5.)E-02 05 L.T. 2. E-02 L.T. 4. E-02 L.T. 4. E-02 L.T. 4. E-02 0/13 (L.T.I.-L.I.4.)E-02

[j 06 L.T. 3 E-02 L.T. 4. E-02 L.T. E-02 L.T.

4. 4. E-02 0/13' ( L . T . 2. -L . T . 4 .- ) E-02 07 L.T. 3. E-02 L.T. 4. E-02 L.T. 4. E-02 L.T. E-02 0/13 4.

(L.T.2.-L.T.4.)E-02 08 L.T. 3. E-02 L.T. 4. E-02 L.T. 4. E-02 L.T. 4. E-02 0/13 (L.T.2.-L.T.4.)E-02 09 L.T. 3. E-02 L.T. E-02 L.T. 4.

4. E-02 L.T. 4. E-02 0/13 (L.T.2.-L.T.4.)E-02 10 L.T. 3. E-02 L.T. 4. E-02 L.T. 3. E-02 3.

L.T. E-02 0/13 (L.I.l.-L.T.4.)E-02 01-10 L.T. 4. E-02 L.T. 5. E-02 4. E-02 L.T. L.T. 5. E-02 --

DET./ TOTAL' 0/40 0/39 0/49 0/128 0/128 --

RANGE (L.T.2.-L.T.4.)E-02 (L.T.4.-L.T.5.)E-02 (L.T.3.-L.T.4.)E-02 (L.T.3.-L.T.5.)[-02 -- --

(a) The Charcoal filters for Station 01 for the weeks of 02/19-02/26 and 03/12-03/19 were lost in transit.

1 I

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c c

1 TABLE C-3 WE EKL Y COL L E CT IONS THIR0 QUARTER 1985 NE8RASKA PUBLIC POWER OISTRICT (JutY-SEPTEMBER)

COOPER NUCLEAR stall 0N EXPOSURE PATHWAY - AIRBORNE CHARC0AL FILIERS pCl/Cu. M.

SAMPLE STATION MON THL Y

SUMMARY

MONTHLY

SUMMARY

MONTHLY

SUMMARY

Qtl AR I E RL Y

SUMMARY

DLI./

NUCLIDE NUMBER 07/02/85-07/30/85 07/10/85-09/03/85 09/03/85-10/01/85 07/02/85-10/01/85 10TAL RANGE CHARCOAL 01 L.T. 5. E-02 L.I. 5. E-02 4. E-02 5. E-02 0/13 FILTERS L.I. L.I. (L.I.2 -L.T.S.)E-02 I-131 02 L.T. 5. E-02 L.T. 5. E-02 L.I. 4. E-02 L.I. 5. E-02 0/13 (L.I.2.-L.1.5.)E-02 03 L.T. 5. E-02 L.I. 5. E-02 L.T. 4. E-02 L.T. 5. E-02 0/13 (L.I.2.-L.T.S.)[-02 04 L.T. 5. E-02 L.T. 5. E-02 L.T. 4. E-02 L.T. 5. E-02 0/13 (L.I.2.-L.T.5.)E-02 05 L.T. 3. E-02 2. E-02 3. E-02 L.I.

(a)

L.T. L.I. 3. E-02 0/9 (L.I.l.-L.I.3.)E-02 g 06 L.T. 4. E-02 L.I. 4. E-02 L.I. 4. E-02 L.I. 4. E-02 0/13 (L.I.2.-L.I.4.)E-02 07 L.T. 4. E-02 L.T. 4. E-02 4. E-02 4.

L.T. L.T. E-02 0/13 (L.I.2.-L.T.4.)E-02 08 L.T. 4. t-02 L.I. 4. E-02 L.T. 4. E-02 L.T. 4. E-02 0/13 (L.T.2.-L.I.4.)[-02 09 L.T. E-02 4. E-02 4. E-02

4. L.T. L.T. L.I. 4. E-02 0/13 (L.I.2.-L.I.4.)[-02 10 L.I. 3. E-02 4. E-02 3. E-02 4. E-Ol L.T. L.I. L.T. 0/13 (L.I.I.-L.I.4.)L-02 01-10 L.T. 5. E-02 L.T. 5. E-02 L.I. 4. E-02 L.T. 5. E-02 -- --

DET./10iAL 0/40 0/46 0/40 0/126 0/126 --

RANGE (L.T.3.-L.T.5.)E-02 (L.I.4.-L.I.5.)E-02 (L.T.3.-L.I.4.)E-02 (L.I.3.-L.T.5.)E-02 -- --

l (a) St at ion 05 Pump failure 08/06-08/13; no charcoal filter 08/13-08/20, 08/20 08/27, 08/27-09/03, Station out of service.

TABLE C-4 WEEKLY CutlECi!0Ns FOURTH QUARIEH 1915 NE8RASKA PdBLIC PbWtR OISTRICT (OCTOBEH-DECEMBER-COOPER NUCLEAR STAi 0N EXPOSURE PATHWAY - '4Il 20RN E CHARC0AL FILTERS pC1/Cu. M. 6 SAMPLE stall 0N MONTHLY

SUMMARY

MONTHLY

SUMMARY

MONTHLY

SUMMARY

QUARTERLY

SUMMARY

OET./

NUCLIDE NUMBER 10/01/85-10/29/85 10/29/85-12/03/85 12/03/85-12/31/85 10/01/85-12/11/85 TOTAL RANGE CHARC0AL 01 L.I. 4. E-02 L.I. 4. E-02 L.T. 4. E-02 L.I. 4. E-02 0/13 ( L . I . 3.-L . I .4. )E -02 flLTERS I-131 02 L.I. 4. E-02 L.T. 5. E-02 L.I. 4. E-02 L.T. 5. E-02 0/13 ( L . T . 3.-l . T . S . ) E -02 03 L.T. 4. E-02 L.T. 4. E-02 L.I. 4. E-02 L.T. 4. E-02 0/12 (L.I.3.-L.I.4.)E-02 (a) 04 1.1. 4. E-02 L.T. 4. E-02 L.T. 4. E-02 L.T. 4. E-02 0/13 ( L . I . 3. -l . i .4. ) f -02 03 05 L.T. 3. E-02 L.I. 2. E-02 L.T. 2. E-02 L.I. 3. E-02 0/13 (L.1.1.-L.I.3.)[-02 cn 06 L.T. 4. E-02 L.T. 4. E-02 L.T. 4. E-02 L.T. 4. E-02 0/13 (L.I.2.-L.T.4.)E-02 07 L.T. 4. E-02 L.T. 4. E-02 L.T. 4. E-02 L.T. 4. E-02 0/13 (L.I 2.-L.I.4.)E-02 08 L.T. 4. E-02 L.T. 4. E-02 L.T. 4. E-02 1.i. 4. E-02 0/13 (L.I.2.-L.I.4.)E-02 09 L.T. 4. E-02 L.T. 4. E-02 f.I. 4. E-02 L.T. 4. E-02 0/13 (L.I.2.-L.I.4.)E-02 10 L.T. 3. E-02 L.I. 3. E-92 L.I. 3. E-02 L.I. 3. E-02 0/13 (L.I.l.-L.I.3.)E-02 01-10 L.T. 4. E-02 L.I. 5. E-02 L.T. 4. E-02 L.T. 5. E-02 0/129 (L.T.I.-L.I.5.)[-02 DE T . /iOT AL 0/39 0/50 0/40 0/129 -- --

RANGE (L.T.3.-L.I.4.)E-02 (L.T.2.-L.T.S.)E-02 (L.T.2.-L.T.4.)E-02 (L.T.3.-L.T.5.)E-02 -- --

(a) No Ch arcoal f ilter f roe St at ion 03, 10/08-10/15, pump failure at station.

D. COMPOSITE OF AIR PARTICULATE FILTERS - GAMMA (See Tables 0-1 and 0-2)

STATIONS 01 to 10 Air Particulate Filters, which were collected weekly, were composited -

for each station for a quarterly gamma spectral analysis during the fou" quarters of 1985. '

Berylliun-7, a naturally occurring cosmogenic nuclide, was detected in 40 of 40 samples at a level of 0.1160 pCi per cubic meter which is similar to the levels of past years. Potassium-40, also a naturally occurring nuclide, was detected in four of 40 samples at a level near the rormal level of detection.

There was one detection of Cs-137, a fission product which occurs fre-quently and is believed to be f allout from previous atomic weapc:is testing.

This detection occurred at St ation 09, 7.25 miles from the reactor, 335 degrees and was at a level below the normal detection level. In the fourth quarter of the year there was one detection of Co-60 at 0.0077 pCi per cubic meter at Station 01, 0.1 miles, 225 degrees. This is an activation product.

Antimony-125 was also detected at Station 01 at a level of 0.0404 pCi cubic f meter.

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.J w

. P%.

e%

>=.

J

. >=. . . e. . . >=. >=. >=. . .

J .J .J e J .J .J .J .J - .J J r b o

w

= C a

O = a a m .=. -=. ,=. . m a a a e m m -

a

== O C C C O O N . =e .C= .= .Oe .O. . .* = ..O O. .O. .Oe .O

= ' .O .O .O C

% % % % % % 'N N % % % % % % % % % as e .O. O O O C C C O . O O O O == O O O C cc

w w w w = w w w w w w

Q w w w w w , d

.% me

= N N er m m m m m m m 'N m m m m M N m b c Q O O O O O O O O O O O C. O C C C C O

% e e e e e. e e o e e e e- e e e e a e CL had 6ad w ned nad w Las sad had nad tad w taa Lad w tea w ned e as .O Lad =*

e= b e -Q c0 M in . . . . . . . . . . . . . . . ., e e es aC CO .e N @ .=* M .e N N N CO .* .=e O P==- N sn == .* 8 "'

3%

to ON es es cm C . . . . . . . . . . . . . . . .

ned MN >= >= >= >= >= >= @

>=. >=. >=.. .>.J = . . TC3 N. e. >=

t= b em . . . . e. >=. n=. .e. . . . .

=J MC Q .J J -d .J .J .J .J ' .J .,J J .J *e d .4 .d ~ .4

==

6 0 t= nn.s -==

W >= w

==

0 e=n e-m a== == .== .== .== m a.= == a= m e.= m e== em . a== G Lad aC O O O O O O O O O N ac 3 a N .= .O= .O=e . .= .O. .O. .O. .Oe .O = - . = .* .O

>= 2 M 3

. . .= =e *

% % % % % % N % % %' === % % % % =% % ==

to O< O W W .O *- O-C O O O C C O C C

= == an == .O, .C., O O C C u O >= >

CD w w w w w w ==. w = ==, w ==e w ==, w .o 3' I*

g og aC .Cm.e gg e- - 4 aC N

C N mm M' . m m M M . M .= m ar ed M M N 88e O O C O O O O O O O O O O O O C O O h ned to .m N e o e e e e e e o e e e a e C N 2 e -

M 8% LaJ Lad e led . Lad Lad LaJ 6ed ' Led had LaJ Led e e e s O M M . E LaJ C 6i aJ Lad LaJ had had ned . naJ 9 C:3 4 aC > == * >= e

,- 6.d aC aC 3 cg gn N. *

. . . . . . . . ., a . . . . . . . e .a e ned = U .J 2 U aC G3 O M == N @ .* M N M G3 43 == W 'N A .= u 'I > % 3% CD CD P=. N e b e4 CER - .J 3 >= .J

ON et O me aC CD E aC M U C . * * * *

Ch C

>=

* * = * * * * * *

WD '

3 & tas CL U% e >= >= >

A GC Led C er = *

e-e=

>= >= >=

>= >* >=* >= >= >=* >=

a= >= b3 Lad had 2 NO a=* .J .J .J .J d .J .J J .J .J aC CL og d .4 .J .J .4 -J .J V ta=

-M C.3 6 c ta=

M C to O 9e aC W Q .=6 gg & 6ad C *== a== *== === am ** .== a.== m eb

.=== .== === a== a=== a== e=. GJ O G3 M > m O O i.aa w =. % .O. .O* .O.e .C. .O - O. .O. .O. .O. .O.e .O= .O= . .O V *e E to

= . == .O= .O* * ,J

% % % % % % N N N N N % % % %

O .e .O= .% e O C C C C C O C C Q O O O C O O

-9 u9 c6 G3 aa %.* ==a w me ==* ==e ==* ==* ==> w === *i.e ==. ==p =e w w 36.

E %

Q N e N m m C

, ese M M M M M -e m as> N m m N m b W O C O C C O O O O O O O O O O C C i % e e e i e e a e C C sn 9 e e M ar LaJ tad led nad LaJ had had nad Lad k8 naJ o

Lad e e had had e

naJ o

had e e had LaJ e ' me =

Lad Q

, >= o .e bu cm We N. e = . . * * * * . * * *

O3

. * . e h C" aC c0 C .= Pm N @ == N N m cp r=. .=. CO CO 4 @ .* e e 3%

)

ON et 44 *C 4

o . . . .

W a=

. . . . . . . . . . . . g as % @ > >= >= >= >= >= >= > u es i

c .= ar. . e.=. . . >=. . >=. . . >=. . . >=. >=. . e=. e=. 6m

.= Q e N -d .4 .J. .4 -J a J .J .J .J " .4 .J .J .J .J .J 9e eb ee e

bC W*

me l- Gh Eb O9

.E 6E O cc -

o- -

== nas ub

>= cu .O .C - .C. .C.e .O .Oe .O= = .O C C e CL

= .C .C= .C.e .C = = ..C .C. .C = == .O. ch aC E e- e e

>.=3 .= e. e.e .= e. .ee .a e. ==

e

.=

e e e

.= .=

e

.a. .= ==

e e

.a.

We h O

ME O O O C C C C O O s

O O O O O O O O O as Ed E9 als T 09 8=

.=

sae WU M

C3 haJ J .Q=

@ ar 8% O .= w @ q) en >= C ar G3 p O gn iJi .=e m er ey er N N N

& .J P O nn en to @ @ S .C

e .c.e m .mmo .=e .= .e .=e N N .mo Eu e er e o e e e e e e e e a e e a e e e .=

aC 3 4 e C O e O C b 3 3 e w w me e e aC E .g3 9 to 3 cD M E U 6 U N N CC CC == U- U CQ W e.J cr >= M =e 39

- , - -- , -- e .

E. FISH (See Tables E-1, E-2)

STATIONS 28. 35 Fish samples were collected during the summer and f all .at the above stations and analyzed for gross beta, .Sr-89, Sr-90 and gamma emitting isotopes. The gross beta and Sr-90 activities were similar to the levels of previous years. Strontium-90 was detected in six of ten samples at a level of 0.013 pCi/ gram, wet, which is below the normal level of detection. There were no detections of Sr-89.

Naturally occurring K-40 was detected in ten of ten samples at an average level of 3.03 pCi/gm, wet. There was one detection of Th-228, also a 4

natural isotope, at a level of 0.050 pCi/gm, wet.

There were no detections of activit ation products such as Co-60 or fission products such as Cs-134 and Cs-137. There was no appreciable dif-ference between Station 28 downstream of the plant as compared with Station 35 upstream of the plant. There sas no indication of an effect on fish sanples from the operations of CNS.

40

/

TABLE E-1

. NEBRASKA PUBLIC POWER DISTRICT COOPER NUCLEAR STATION EXPOSURE PATHWAY - INGESTION FISH - pC1/ge, wet SAMPLE STATION NUCL10E ist QUAR 1ER 2nd QUARTER 3rd QUARTER NUMBER 4th QUARTER 05/21/85 10/08/85 Gross Beta 28,35 Meantstd.dev. 4.5 t 0.8 E 00 5.3 1 0.6 E 00 det./ total 5/5 range 5/5 (3.1-5.2)E 00 (4.7-6.2)E 00

$r-89 28,35 Meantstd.dev. L.T. 8. E-03 L.T. 2. E-02 det./ total 0/5 range --

0/5 Sr-90 28,35 Meantstd.dev.

det ./ tot al 1.5 t 0.2 E-02 9.3 1 0.4 E-03 range 3/5 3/5 on (1.4-1.8)E-02 (0.'5-1.3)E-02 K-40 28,35 Meantstd.dev. 2.8 1 0.7 E 00 3.2 t 0.8 E 00 det./ tot al 5/5 range 5/5 (2.2-4.0)E 00 (2.7-4.5)E 00 Co-60 28,35 Meantstd.dev. L.T. 1. E-02 L.T. 1. E-02 det./ total 0/5 range --

0/5 I-131 28,35 Meantstd.dev. L.T. 5. E-02 L.T. 5 '. E-02 det./ total 0/5 range --

0/5 Cs-134 28,35 Meentstd.dev. L.T. 1. E-02 L.T. 1. E-02 det./ total 0/5 range --

0/5 Cs-137 28.35 Meantstd.dev. L.T. 1. E-02 L.T. 1. E-02 det./ total 0/5 range --

0/5 Th-228 28,35 Meantstd.dev. '

L.1. 3. E-02 5.0 t 1.1 E-02 det./ total 0/5 range --

1/5.

i t J- 4 -k & 4-4-e TABLE E-2 NEBRASKA PUBLIC POWER DISTRICT COOPER NUCLEAR STATION EXPOSURE PATHWAY - INGESTION FISH - pCl/ge,' wet SAMPLE STATION ist QUARTER ~

NUCLIOE 2nd QUARTER 3rd QUARTER 4th QUARTER

NUMBER 05/21/85 10/08/85 Be-7 23,35 1.

L.T. E-01 (0/5) L.T. 1. E-02 (0/5)

K-40 28,35 2.8 1 0.7 E 00 (5/5) . 3.2 1 0.8 E 00 (5/5)

Mn-54 28,35 1.

L.T. E-02 (0/5) L.T. 1. E-02 (0/5)

Co-58 28,35 L.T. 1. E-02 (0/5) L.T. 1. E-02'(0/5)

Fe-59 28,35 L.T. 3. E-02 (0/5) L.T. 3. E-02 (0/5)

Co-60 28,35 1.

L.T. E-02 (0/5) L.T. ~ 1. E-02 (U/5)

Zn-65 28,35 3.

L.T. E-02 (h/5) L.T. 3. E-02 (0/5)

Zr-95 28,35 1.

L.T. E-02 (0/5) L.T. 1. E-02 (0/5)

Ru-103 28,35 L.T. 2. E-02 (0/5) L.T. 1. E-02 (0/5)

Ru-106 28,35 .L.T. l. E-01 (0/5) L.T. 1. E-01 (0/5) 1-131 28,35 5.

L.T. E-02 (0/5) L.T. 5. E-02 (0/5)

Cs-134 28,35 L.T. .1. E-02 (0/5) L.T. 1. E-02'(0/5)

Cs-137 28,35 1.

L.T. E-02 (0/5) L.T. 1. E-02 (0/5) j Ba-140 28,35 L.T. 3. E-02 (0/5) L.1. 2. E-02 (0/5)

Ce-141 28,35 .L.T. 3. 'E-02 (0/5) L.T. 3. E-02-(0/5)

Ce-144 28,35 L.T. 1.

' E-01 (0/5) L.T. 1. E-01 (0/5)'

RA-226 28,35 3.

L.T. E-01 (0/5) L.T. 3. E-01 (0/5)-

Th-228 28,35 L.T. 3. E-02 (0/5) 5.0 t 1.1 E-02 (1/5)

F. MILK (See Tables F-1, F-2 STATION 61 (NEAREST PRODUCER)

I 1

Milk samples from the nearest producer Station 61, 3.5 miles, 326 degrees from the elevated release point of CNS were collected once every 15 days in peak pasture season and once every 31 days the rest of the year. The monthly sanples collected January through May and October through December were analyzed for I-131 by chenical separation for elemental calcium and strontium 89 and 90. In addition they were analyzed for gamma emitting isotopes on a high resolution gamma spectrometer. The samples collected every 15 days during peak pasture season were analyzed. upon receipt for I-131 and a monthly composite prepared and analyzed as described above.

There were no detections of I-131 in the twenty-one samples analyzed by chenical separation. There were no detections of Sr-89 in the sanples analyzed. Strontium 90 was detected at an average level of 1.8 pCi/ liter, which is a normal environmental level. Elemental calcium was found at an average level of 2.3 mg/ liter. Potassium-40, a naturally occurring isotope, was detected at an average level of 1270. pCi/ liter.

There were no det'ections of the fission product Cs-137. There was no indication of an effect on the milk of the producer nearest the plant from the operations of CNS.

l 43

TABLEFk NEBR ASK A PUBL IC POWER O! STRICT COOPER NUCLEAR STATION EXPOSURE PATHWAY - INGESTION MILK - NEAREST PRODUCER - pCl/ liter SAMPLE STATION lst QUARTER NUCLIDE 2nd QUARTER 3rd QUARTER 4th QUARTER NUMBER 01/09/85-03/12/85 04/09/85-06/18/85 07/02/85-09/17/85 10/01/85-12/03/85 Sr-89 61 Meanistd.dev. 2. E 00 2. E 00 L.T. L.T. L.T. 2. E 00 L.T. 1. E 00 det./ total 0/4 0/4 0/3 0/3 range -- -- -- --

Sr-90 61 Heantstd.dev. 1.9 1 0.7 E 00 4/4 1.4 1 0.4 E 00 2.2 1 0.6 E 00 1.6 1 0.6 E 00 det./ total 4/4 3/3 3/3

. range (1.5-2.9)E 00 (1.0 1.8)E 00 (1.8-2.9)E 00 (1.2-2.3)E 00 I-131 61 Meanistd.dev. L.T. 3. E-01 3. E-01 3.

by chemical de t . / tot al L.T. L.T. E-01 L.T. 4. E-01 0/4 0/5 0/9 0/3 separation range. --

i Ca 61 Meantstd.dev.

mg/Ilter 2.4 2 0.5 E 00 2.1 1 0.2 E 00 2.1 1 0.7 E 00 2.4 1 0.3 E 00 det./ total 4/4 4/4 3/3 3/3 range 4s (2.0-3.0)E 00 -(1.9-2.3)E 00 (1.3-2.6)E 00- (2.1-2.6)E 00

- K-40 61 Meantstd.dev. 1.27 0.1 E 03 1.272 0.1 E 03 1.39+-0.1 E 03 1.151 0.1 E 03 det./ total 4/4 -4/4 3/3 3/3 range (1.1-1.4)E 03 (1.2-1.3)E 03 (1.3-1.5)E 03 (1.1-1.3)E 03 I-131 61 Meantstd.dev. L.T. 1. E 01 L.T. 3. E 01 by gamma L.T. 8. C 01 L.T. 2. E 01 det./ total 0/4 0/4 0/3 0/3 spectroscopy range -- -- -- --

Cs-137 61 Mcantstd.dev. L.T' 7. E 00 L.T. 7. E 00 L.T. 6. E 00 L.T. 7. E 00 det./ total 0/4 0/4 0/3 0/1 range -- -- -- --

l l

- - e ,.= ,== m - - ,== ,= ,== ,=m

- = ,== == = -s m m m m 4 m m m m m% m% m %m m %

m% m% m %m m % % % % % % %

C C C m O C C C C C C C C C C nth C w w w w w w w w .C, w w w w w .C . w c0 w ,

C == = c C C ad N e m M C C == - C .* O C C 'C C EC C - O C C C C C C C C C C C C tad %

w hJ 6ad had 6.4 knJ w had w naa w 4.nJ w w w taJ

>N had nad M en aC 8 c* e

e e o e . . e e e e . . e

j 3 sn e N N r== @ N N N >

C2 00 C N N e.* N N CO @ 8**

. N n M o e . e e ,

R., oC . . . o * , e e e w% >=

e se.s >=

.e em e

>= >- >=

s=

e.

>= ~ >= >= >= == >= >= >= >

e e e e e C e e e

. J. .J .J J a .J a en a > J .a .e - d .J =J d .J .,J a== ,== . mum mm ,== ,=

.s saum ,== m== m

,==

m m.m am sm m

a ,a=

m m m m m.==

eaum

,.=

m m% m m m m % m %m m m m% % % % % % %

% % % % C C m C m C C o O C C C C .C, .

C C .C, .C, C, w w w w w w w w w w .

c w w - w

% N e.=

m O C =* C ** O O -* == C C == == ==

N -e C C C C C C C C C C C M *= C C C C C C C sad % w w ts.s w J w w s.nJ - w em @ w s.J tad sad w taa naJ i.ed 6ad mO aC a == e e . . . e o e

. e e . e e 3m e . .

N c0 @ . CD @ @ N s.* W we ==

C CC N O @ @ .=e @ em UN **

. . e e e . e e e sc . O e e

>= >= >= >= >=e tm >= >= > >= >= >= >= >=

b m% >= m t=~

e e . e . . . >=. . e e W N .

a =J .J .J J J J J .J =* J J =d .J e.s C J e .J a

==

>=

u 2 u ' *== ,=* === ^ ,.* ,== a = *** .am a= ,== a ,.= m a= =

C CL e

w w w w% air w w w w e w w w w% w %w w% -w% %

E == . % % % %- % % % % %

>= 2 >= e % % %

C C C C C C C C C to M m C w C C .C, .C.e w .C., w w .C w .Ce w w w =., w w w w

== .O.e w cc CO -.,

C >= L3 w % a'a O C ** ==* == N **

& CD -= m O C .= c == O O =* C C C O C aC E : u C O C C C C C C C C m >= == 3 w == c C C

. w m O >= %

tad led led I.ha ned had heJ kne nJ ted ned tad kna had had Led N 3 I C 6d @ nad ha.s a C CE CE .aC C

> m 3 a .e e

ta= m et e * - = . *

a . . . m o *

N N **

i,a.s eC C LA N N f" @ N M CO N ** N

>= CD N O N CD N w W .J 2

n= u Z 44 at5 %

e3 J 3 > haJ C@ +4 e o e e e e o e e e . . e e e et go E at g NC e oms

>= >= >=- >=e w >= > >= t- pm >= >=o >=e >=. t=

>= 3 & aC % >

N. a e . . >=. . e .

m cg ned w e

e e a a .J a a a .J .J .J a .J .J E C a -a J J .J .J taJ tad aC A E hs C 3 8 m C m aC U C & m ,==

b J ,== sm ,= ,= ,== a.= a== a===

C e== a== ,== ,== ,=== m e e T 53 ms .e T T W W T @ T T T . T E T T w T T T T

% % % % % % *== % %

Oa8 %48 E

C C C C C C C .C, C C m C w C C .C, .C, w w as w w C,

. w w

.C, w w =., w . w w w O O == e O C C C ==

C cm N -a m O C C7 C s*

C C C C C C C had == C C C C C8 C C C C C C

>= % had LaJ w haJ had heJ &nd LaJ &aJ &ad w tJ had had ned had CK M hsJ LaJ aC C 3 e == e e e . *

e e e e e s . a Ogn * *

e

@ w- ce @ N w @ ** *ir @

CD eir C w w @ T we e es %

@@ M e = e o e e e

>= >= >= >= >= >= >= >= >=

N e e e . .

g=

we C e

% >8* N e

> >= > >= e>= e e ba=

* * . e e e e o e en o o o d J J A J J J. M J C J =.8 =0 .J e.J ed .J # A l

IE sad C.e ot e

>= E > e=e ese e.e e' e s.e ce me em we em em c.e aC 3 e.e em e .=e

>= E @ @ @ @ @ @ @ @ @

so ind M @ elP N O e.* eir @ CO naJC m M W W W N N W CD @ C @ LA C a=e N N

.J ==

W @ @ @ O.*

s em m em s.* pe se one Ad .fo* C @ nD 0 8 a=8 7 p t 9 9 0 0 9 8 EU e er e t e s 3 3

e 88 e & aC J::

elt3 9 C O W O C k #

W W >=

e W W N N CE CE == W W ED CE ME ED M E La=

45

,e .- r - , . - _

I G. MILK (See Tables G-1, G-2)

STATIONS 42, 75, 78 (OTHER PRODUCERS)

Milk samples were collected quarterly from other producers within a ten mile radius of the plant. No sample was available in April from Station 78.

The samples were analyzed for I-131 by chemical separation for elemental calcium, for Sr-89 and 90 and for . gamma emitting ' isotopes. There were no detections of I-131 in the eleven samples monitored.

There were no detections of Sr-89. Strontium-90 was found at an average level of 2.1 pCi/ liter. There were 2.2 mg of calcium per liter of milk. Potassium-40 was detected at an average level of 1239. pCi/ liter. The strontium-90, K-40 and elemental calcium were at normal environmental levels and were similar to the results obtained from analyses of milk from .the nearest producer. -It can be concluded that the operations of CNS had no effect on milk samples and thus no dose impact on the population.

1 46

TABLE G-1 NE8RASKA PUBLIC POWER OISTRICT COOPER NUCLEAR STATION EXPOSURE PATHWAY - INGESTION Milk -- Other Producers - pC1/ liter SAMPLE STATION NUCLIDE lst QUARTER 2nd QUARTER 3rd QUARTER NUMBER - 01/15/85 4th QUARTER 04/16/85 07/16/85 '10/15/85 Sr-89 42,75,78 Meantstd.dev. L.T. 9. E-01 L.T. 1. E 00 E 00 det./ total 0/3

.L.T. 2 L.T. 1. E 00 range --

0/2 (a) 0/3 0/3 Sr-90 42,75,78 Meantstd.dev. 1.5 t 0.7 E 00 2.0 t 0.1 E 00 2.5 t 1.2 E 00 2.3 2 0.6 E 00 det./ total 3/3 2/2 3/3 range (1.1-2.3)E 00 3/3 (1.9-2.0)E 00 (1.6-3.8)E 00 (1.7-2.8)E 00 1-131 42.75.78 Meantstd.dev. 4.

by chemical L.T. E-01 L.T. 2. E-01 L.T. 3. E-01 det ./ tot al 0/3 0/2 L.T. 4 E-01 separation range --

0/3 0/3 Ca 42,75,78 aq/Ilter Heantstd.dev. 2.1 t 0.5 E 00 2.2 t 0.2 E 00 det./ total 3/3 2/2 2.4 t 0.4 E 00 2.1 1 0.4 E 00 range 3/3 3/3 (1.6-2.6)E 00 (2.0-2.3)E 00 (1.9-2.7)E 00 K-40 (1.8-2.5)E 00 d) 42,75,78 Meantstd.dev. 1.27t 0.1 E 03 1. 30 t 0.1 E 0 3 .l.3010.1 E 03 1.13: 0.2 E 03 det./ total 3/3 2/2 3/3 range (1.23-1.31)E 03 3/3 (1.24-1.35)E 03 (1.26-1.34)E 03 (.85-1.30)E 03 Cs-137 42,75,78 Meantstd.dev. L.T. 5. E 00 det./ tot al L.T. 4. E 00 L.T. 7. E 00 L.T. 7. E 00 0/3 0/2 0/3 '

range -- -- --

0/3 1-131 42,75,78 Meantstd.dev. L.T. 9. E 00 L.T. 8. E 00 L.T. 1. E 01 Jet./ total 0/3 L.T. 3. E 01 range --

0/2 0/3 0/3

( a) There was no sample avaliable from Station 78 on April 16, 1985.

l

O m m m O N m m O m M M O O m

.M M M M M M M M M M M N

N % M M M M M' 'M M N- N% N % % % % N % % % % N N O m wO C O O O N w w w w w C C O C C C w O Ow O O O w w w w w w w w w w m M 'O O W C m M C O m m O C m m m N m C C C C O O C 0 O C C WW 'O C C C C C C

>@ W W W W W W W W W W M% W W W W W W W W CW N De e e e . = e o . . . . e CN O N-N . . e e N @ N C N @ @ @ M N N m e.N W N m zm

a e n e e e o e o e e w p '

W W M >e > > >

. . . e e e e . e e e e

M W > > > > > > W

. a e e o e o e a m a 4 4 d e a a a e . e e 4 a d a d d a d e

m m o e m m o m e o e m mm O

mm

%N M

N m N mN mN mN mN m%- m% m % m %m m%m e m m

.m m

m m

w m C C C w

C O O O C C C O O' C O . C C w w w w w w w w w -w w w w w w w m m O O m C

O O m m E C O 'O O C ~ ~ m N

WW C Q O O o C. O o O C C 3 C C C

>@ W W W W W W W W W W W m% W W W W W W W

<@ m mm e e o e e o e e o e e o e e ON N O N N N N N @ @ =

e . o A @ N N = m @ N =

CC m 6 -

O e e e e o e a e . . e e e

> o L

M a

e m

m. >

a e > > > > > > > > > > > > > > w e e o e e e e e . . , .

e e

G d a a a a a a 4 a- 4 a a a a d

a m m

> e= m u E % w m o m m es . m o e e m m M m u N N N N N N N N o

N m

N m o e e m m'- m m

> E W & N' N % N N N N N N N N W % % % % % % % N N

! O C N - C$ C S N N % % N %

W.

m m W e w w w w w w C C wC Cw w w C C C O C O O O O O > Q w w w w w w w w

< E e E m m C C C C m O O m m > m b W C C C O O C 'm m N O e W W e WW C O C C C C C C C Q C C C W N 3 U E@ W

'C O C O

+ W W W W W W W W W W W W W W e E 3 (N W W W @

Q E' 4 > - V 3@ W m-W < O Cm * * * * .

W u. d 3 6 % @ C w w @ w

* *

e * * *

e * *

e d m u = A Tw m W W w @ W W W m T * @ @

M J 3 > CC m - a

( m E < 6 N e Q e e e . e e o e

> 3 & W > m W e e e e e e e W e =

s g W W a

a e o e e M

e > > > > > > > > > > > >

e e o e e e e e o e e e k =

s a

a a d a a 4 d a e

-4 & mQ a a a e d a d a 6 M C 3 4 m C W e 4 W C e C

, m & o

@ u a m m m m m e e e w W m m m m m E

m m m

% m% m% m% m% m % m %m %m m %

mN %

M m mN m o m m m% m m mm @

N E O M C C O O C' O C

' N % N w w w w w w w w C C C C C O C C O C w -w w w w w w a

w w o M m m O O O O m O C m O O W C C C C C C C C O m N m

>W O C C C C C C C C C C C 9 E@ W W W W W W W W W W W W W W a

(% W W W W M

~3W m om e o e e e o e e . . e e e e W

N v C w w @ w m W W w @ W W

e e o am @ @ w m m b

C e h m o N e - e o e e o e e e e e e e

> N e e e e e e e m e e e e e e e e a m J d d 4 a a e a m a e d o

a e

a e e e n d a e m

m D

9 G

=

O N N N N N N

@ @ @ @ @ @ @ t Eg o N- N N N N N N N N N N N e e e e e e e e a e o e e CW W W o e e o e e W W W W W W W W W W W W W W mm N N N N N N N N N N W W

>E e N N N N N O 43 N N e e e o e o e o e N. N. N. o e e e o C N N N N N N N N N N WE M

w w '

w w w - w w w w w w w Nw Nw Nw Nw Nw w N e

9

' 3 G

b W &

WC M @ w m E

am e @ @ O W W N O W @ @ >

& C C m M m w w w N N La N O W W W @ @ @ m m m m m m Eu e w e e e e e e o e =

M H N N 43 @ C O a e e e e e a m a @ O C b S 3 8 e

9 9 4 4 A WE @ w E u W u N N m E m u u @ u u E > w 9

48

1

.1 H. VEGETATION, BROADLEAF (SEE TABLES H-1 and H-2)

STATIONS 35, 92, 93 Broadleaf vegetation was collected each month during the growing season, May through October. Three samples were collected each month from each station plus a quality control samole. The samples were tested for I-131 by chemical separation and for gamma emitting isotopes by high resolution spectrometry.

No I-131 was detected in any of the 62 samples. The naturally occurring isotopes Be-7, K-40, Ra-226 and Th-228 were detected at normal environmental levels. There were six detections of the fission product Cs-137 at an average level of 0.054 pCi/gm, wet. The highest results were at Station 93, 1.5 MI., 230 degrees at 0.073 pCi/gm, wet. This is not significant since Cs-137 was found in vegetation in other areas of the United States and is "

believed to be fallout from previous atomic weapons testing. There was no difference between stations close to the plant and those more distant and no indication of an effect on vegetation from the operations of Cooper Nuclear Station.

i 49

. . . = .- . - .. - -, . - . . . . , _ . _ - . - _ - , . _. - - . . . ~ . . ~ , . +. . . ~ . - , .. _

TABLE H-1 NE8RASKA PUBLIC POWER DISTRICT -

i COOPER NUCLEAR STATION EXPOSURE PATHWAY - INGESTION i

BROADLEAF TERRESTRIAL VEGETATION - pCl/ge, wet SAMPLE STAtl0N ist QUARTER

NUCLIDE NUMBER 2nd QUARTER . 3rd QUARTER ~4th QUARTER 05/21, 06/11/85 -07/09.08/13,09/10/85- 10/08/85 I-131 35,92,93 Meantstd.dev.

j by chemical L.T. 1. E-02 L.T. 2. 'E-02 L.T. I '. E-02 det./ total 0/22 i separation range 0/30 0/10 Be-7 35.92,93 ele an t s t d . de v . 1.6 t 1.1 E 00 1.8 t 1.6 E 00 - 5.3 t 5.3 E 00

' det . / t ot al 21/22 30/30 range- 10/10 (0.33-4.6)E 00 (0.28-7.0)E 00 (1.1-17.3)E 00~

, K-4'O 35,92,93 Meantstd.dev. '9.6 i 3.4 E 00 ~

~6.8 1 2.1 E 00 9.9 i 4.5 E 00 det./ total 22/22 range 30/30 10/10

{ (5.5-20.3)E 00 (3.6-13.2) E 00 (3.1-18.2)E 00 l I-131 35,92,93 Meantstd.dev. L.T. 3. E-01 by gamma det./ total L . T .' 2. E-01 L.I. 2. E spectroscopy range 0/22 0/30 0/10 l c$ Cs-137' 35,92,93 Meantstd.dev. L.T. 6 '. E-02 3.5 t 2.0 E-02 1.6 2 0.3 E-01 det ./ t e t al 0/22 5/30 ran9e 1/10 (1.5-6.3)E-02 --

I ,Ra-226 35,92,93 Meantstd.dev. L.T. 1. E 00 L.T. 1. E 00 4.9 +-2.8 E-01 det./ total 0/22 0/30 1/10 range -- -- --

! Th-228 35,92,93 Meantstd.dev.

l 2.2 2 0.9 E-02 1.1 1 0.7 E-01 3.0 1 2.6 E-01 det./ total range I/22 2/30 4/10 i

(0.6-1.6)E-01 (0.3-5.5)E-01 o

h f

i I

i i

- - .- - - . ~ . - - _ - - . - . - . - - -

- . .- - ._ - . ~ . . - . . ., -. -. .

i t

! TABLE H-2 '

i NEBRASKA PUBLIC POWER DISTRICT COOPER NUCLEAR STATION 4

EXPOSURE PATHWAV - INGESTION BROAOLEAF TERRESTRIAL VEGETATION - pCl/ge, wet i

SAMPLE STATION lst QUARTER NUCLIDE NUMBER 2nd QUARTER 3rd QUARTER 4th QUARTER 05/21,06/11/85 07/09,08/13,09/10/85 10/08/85 Be-7 35,92,93 1.6 1 1.1 E 00 (21/22) 1.8 1 1.6 E 00 (30/30)~ 5.3 2 5.3 E 00 (10/10) ;

I K-40 35,92,93 9.6 t 3.4 E 00 (22/22) 6.8 t 2.1 E 00 (30/30) 9.9 t 4.5 E 00 (10/10)

Mn-54 35,92,93 6.

L.T. E-02 (0/22) L.T. 5. E-02 (0/30) L.T. 4. E-02 (0/10)

Co-58 35,92,93 L.T. 7. E-02 (0/22) L.T. 5. E-02 (0/30) L.T. 4. E-02 (0/10)

Fe-59 35,92,93 L.T. 2 E-01 (0/22) L.T. 1. E-01 (0/30) L.T. 1. -E-01 (0/10)

Co-60 35,92,93 6 L.T. E-02 (0/22) L.T. 5. E-02 (0/30) L.T. 4. E-02 (0/10)

Zn-65 35,92.91 2.

L.T. E-01 (0/22) L.T. 1. E-01 (0/30) L.T. 9. E-02 (0/10)

Zr-95 35,92,93 L.T. 7 E-02 (0/22) .L.T. 6. E-02 (0/30) L.T. 5. E-02 (0/10).

Ru-103 35,92,93 L.T. ,7. E-02 (0/22) L.T. 7. E-02 '(0/30) L.T. 5. E-02 (0/10) gg Ru-106 35,92,93 L.T. 5. E-01 (0/22) 5.

I L.T. E-01 (0/30) L.T. 4 E-01 (0/10) l-131 35,92,93 3.

L.T. E-01 (0/22) L.T. 2. E-01 (0/30) L.T. 2. .f-01 (0/10)

Cs-134 35,92,93 6.

L.T. E-02 (0/22) L.T. 6. E-02 (0/30) L.T. 5. E-02 (0/10)

Cs-131 35,92,93 6.

L.T. E-02 (0/22) 3.5 1 2.0 E-02 (5/30) 1.6 1 0.3 E-01 (1/10)

Ba-140 35,92,93 E 01 (0/22) L.T. 8. E-02'(0/30)

L . T .' l.

L.T. 8. E-02.(0/10)

Ce-141 35,92,93 1.

L.T. E-01 (0/22) L.T. 1. E-01 (0/30) L.T. 1. E-01 (0/10) j Ce-144 35,92,93 5.

L.T. E-01 (0/22) L.T. 5. E-01 (0/30) L.T. 4. E-01 (0/10)

RA-226 35,92,93 1.

L.T. E 00 (0/22) L.T. 1. E 00 (0/30) ~ 4.9

2.8 E-01 (1/10).

Th-228 35,92,93 2.2 t 0.9 E-02 (1/22) 1.1 2 0.7 E-01 (2/30) 3.0 2 2.6 E-01 (4/10) i b

l

-)i I. GROUNDWATER (See Tables I-1 and I-2)

-STATIONS 11, 47 Groundwater was collected from two stations quarterly and analyzed for gross beta and gross alpha activity, for tritium and for gamma emitting radionuclides. Station 11 is 0.15 miles from the plant and station 47 is 25.75 miles from the plant.

The gross beta activity averaged 7.2 pCi/ liter which is statistically There was one detection of alpha activity at . Station

~

similar to past years.

11 at a level of 4.7 pCi/ liter which frequently occurs from natural ground sources. There were no detections of gamma emitters above the normal level of detection. The tritium level averaged 209 pCi/ liter for the year which is the normal environmental level.

There was no difference in levels of beta activity or tritium for the station close to the plant as compared with the more distant station. It may be concluded that there was no impact from the operations of CNS on the environment as shown by measurements of radionuclides in groundwater, i

I 6

4 52 1

TTELEDVNE ISOTOPES TABLE I-1 NE8RASKA PU8LIC POWER DISTRICT COOPER NUCLEAR' STATION EXPOSURE PATHWAY - WATERBORNE GROUNDWATER' pCl/ liter SAMPLE STATION lst QUARTER 2nd QUARTER 3rd QUARTER 4th QUARTER NUCLIDE NUM8ER 01/23/85 04/23/85 07/23/85 10/22/85 Gross 11,47 Meantstd.dev. L.T. 3. E 00 4.7 +-4.0 E 00 L.T. 5. E 00 L.T. 1. E 00 Alpha det./ total 0/2 1/2 0/2 0/2 range -- -- -- --

Gross 11,47 Meanistd.dev. 7.4 +-0.8 E 00 9.1 +-0.8 E 00 7.9 +-1.6 E 00 4.8 i 2.4 E 00 i

Beta det./ total 2/2 2/2 2/2 2/2 range (6.8 +-8.0)E 00 (8.5-9.6)E 00 (6.7-9.0)E 00 (3.1-6.5)E 00 i

+

1-131 11,47 Meantstd.dev. L.T. 1. E 01 L.T. 7. E 00 L.T. 1. E 01 L.T. 2. E 01 det ./ tot al O/2 0/2 0/2 0/2 range -- -- -- --

Cs-137 11,47 Meantstd.dev. L.T. 6. E 00 L.T. 4. E 00 L.T. 7. E 00 L.T. 8. E 00' det./ total 0/2 0/2 0/2 0/2 range -- -- -- --

[S H-3 11,47 Meanistd.dev. 2.7 t 1.5 E 02 2.0 1 0.6 E 02 L.T. 1.3 E 02 1.8 1 1.1 E 02 det./ total 2/2 2/2 0/2 1/2 range (1.6-3.7)E 02 (1.5-2.4)E 02 -- --

a I

1

-I l

I e m m m m ~ m m e n' n m m m m m m m N N N N N N N N N N N N N N, N N N N N N N N % % % % % % % % % % % %

O O O O N N w

O C C O O O O O O O O C C O w w w w w w w w w w w w .w w w w w m N O O

O

O O m O

m O O m m m N m O O O O O O O O O O O O O O C O O

^

m w w w w w w w w w w w w w w w w w w W -

We mm . . . . . . . . . . . . . . . . . ..

(N DN N N N N m N m Wm N N W W m N N N =

ON

% e e e e e , e e e . . e e e

. e . e 20 > > > > > > > > > > > > > > > > >

wm . . . . m. . . . . . . . . . . . . .

T J J J J J J J J J J J J J J J J J J m o o m m m m m o o m m m m o a m m N N N N N N N N N N N N . N N N N % % % % % %

N N N

% % N % .% % N N N N %-

O O O O O C O O O O C O O O O O O O w w- w w w w w w w w w w w w w w w w m N O O m O m O O. m m C O C m m N m C C C O C O O O O O- C O O O C C C O-w g.

am w w w w w w w w w w w w w w w w w w gg . e . . . . . . . . . . . .

. . e a 4% @ N @ @ m @ m N @ @ m N N @ N @ N m 3m

, ON N . . . . . . . . . . . . . . .

s CN so > > > > > > > > > > > > > > > > > >

q m J J J, 4 J J J J J J .J J. J J J J J J

> w U E

= g - e m a m e a m e m m a m e a m m .m M O N N. N N N N N N N N N N N N N

> E e %* % % % N N N m O E O C O' C O O C C'O O'% O O O O O

= = w w w w w w w w w w w O O O i O > > w. w w w w w w w

( ( m ~ O O C O 'O O O ~ C C C C C

M > 2 m O O C C O N O w w w k O O O O C C O C O O O C O W 3 9 > W M w w W w w W W W W W w W w W W W W . w e C E 4 d w a a 4 > 3 m >m w ( m ge . . . . . . . . .. . . . . e . .

+ w U J 3 O P (N M @ W M N T W W W M N J = U Z E % 3M T T @ W M m e m J 3 > 3 = ON 4 m E < O v % e . . . . . . . . . . . e e

> 3 ' & w 6 DT > > > W > > > > > > > > > >* > > > >

g g O CC e s * * . * * * *

w w N a J J J J J J J J J J J

( & 5 J J J J J J M C D mO @

( W C E &

3 M = m e a m m a m -m m m m e m m m m m w w N N N N N N N N N N N N N N N E % % % % N N N C C O O C C O C C C C O O O C C C C w w w w w w w w w w w w w w w w w w m m C C m O m O O m m O O O C C C m m N m O C C O O O O C C C O O O O O m w w w w w w w w w W . w w w w w w w w w

wm gm . . . . . . . e . . . . . . e . . .

4%

3M

@ m m m m @ m @ N m m @ @ N m m m m CN

% . . . . . . e e e . . e . . . e . .

dm eO > > > > > > > > > > > > > > > > > >

. e e . . . . . . e . . . . . . . .

J J J J J J J J J J J J J J J J J J u

1 E

Om ww N N N N N N N N N N N N N N N N N N WS T T T T T T T T T T T T T T T T (E e e o e o e o e e o e T T' e o e e o e e W3 m m m m m m m m m m m m m m m m m m mm m m m m m m m m m m m m m m m m m m W

WO M @ N O 60 m O m e T N T @ W i

Ja T O O m M M T T T N N

' Ed N O m m m @ @ m m a M = m a = = N N EW 6 T 8 + t t I e I f 9 m 0 t t t t t

, MS W e C O W O C b 3 3 e

W 4 9 W 4 m t

e mE M E W 6 U N N E m a u u e U U M M 54-4

., , - -- -, -, , -- , . , ~ ~ - - . . . . - - . . . .

J. RIVER WATER (See Table J-1 and J-2)

' STATIONS 12,28 River water was collected monthly and monitored for gross beta and gross i alpha, suspended and dissolved, Sr-89 and Sr-90. - A quarterly composite was measured'for gamma emitters and tritium.

There were no detections of gamma emitters above the normal . level of detection. Neither strontium-89 nor strontium-90 was detected.

The' average gross alpha and gross beta readings were similar to previous years as indicated in the summary of 1984 and 1985 averages below:

1985 1984 Average pCi/ liter Average per/ liter.

Gross Alpha 3.9 3.7 (dissolved)

Gross Alpha 2.4 4.2 (suspended)

Gross Beta 8.3 11.6 (dissolved)

Gross Beta 6.4 8.7 (suspended)

These gross alpha and gross beta results show seasonal variations with a rise in suspended particles with weather and flooding that stirs up the river bed and any naturally occurring activity.

These measurements indicated that water samples monitored during 1985 contained no detectable CNS plant radionuclides. Additional verification that no detectable releases occurred was that the tritium activity was at- a normal environmental level of 225 pCi/ liter and there was no difference between the station upstream of the release point and the station down-stream.

55

. ~ .

TABLE J-l NEBRASKA PUBLIC POWER DISTRICT COOPER NUCLEAR STATION EXPOSURE PATHWAY - WATERBORNE RIVER WATER pCl/ liter SAMPLE STATION NUCLIDE lst QUARTER 2nd QUARTER 3rd QUARTER 4th QUARTER NUMBER 01/08/85-03/12/85 04/09/85-06/19/85 07/10/85-09/03/85 10/08/85-12/17/85 _

Gross 12.28 Meantstd.dev.

Alpha 4.5 t 0.3 E C0 3.2 1 0.0 E 00 L.T. 3. E 00 3 8 i 2.7 E 00

' det./ total 3/6 2/6 0/6 1/6 (dissolved) range (4.1-4.7)E 04 (3.2-3.2)E 00 --

Gross 12,28 Meantstd.dev. 3.5 t 3.0 E 00 Alpha 3.6 t 3.6 E 00 8.4 t 0.2 E-01 L.T. 9. E-01 (suspended) det./ total 3/6- 5/6 5/6 0/6 range (1.7-7.0)E (0 (0.72-5.8)E 00 (0.8-1.1)E 00 --

Gross 12,28 Meantstd.dev. 10.51 1.9 E 00 Beta det ./ tot al 8.2 t 1.7 E 00 7.1 1 1.2 E 00 7.7 i 1.8 E 00 6/6 6/6 6/6 6/6 (dissolved)- range (9.1-14.01E 00 (5.6-10.0)E 00 (6.4-8.9)E 00 (6.3-ll.0)E 00 Gross 12.28 Meantstd.dev. 17.It 13.4E 00 B

6.9 t 5.2 E 00 2.1 1 0.5 E 00 1.9 1 1.4'E 00 det./ total 4/6 6/6 6/6 4/6

[$ (eta suspended) range (5.2-31.0)E 00 (3.2-13.0)E 00 (1.4-2.7)E 00 (0.1-3.7)E 00 4

Sr-89 12.28 Meantstd.dev. L.T. 1. E 00 L.T. 1. E 00 L.T. 1. E 00 L.T. 2. E 00 l det./ tot al 0/6 0/6 0/6 range -- -- --

0/6 Sr-90 12.28 Meantstd.dev. 5. E-01 L.T. L.T. 9. E-01 L.T. 9. E-01 L.T. 6. E-01 det./ total C/6 O/6 0/6 i range -- --

O/6 1

H-3 12.28 Meantstd.dev. 2.5 t 1.0 E 02 l

(a) 2.6 t 0.8 E 02 1.0 2 0.6 E 02 2.7 1 0.7 E 02 i

det./ total 2/2 1/2 1/2 1/2 range (1.7-3.3)E 02' --

i

- . m. .

TTELEmpME ISOTOPES TA8LE J-1 NE8RASKA PUBLIC POWER DISfRICT COOPER NUCLEAR STAil0N EXPOSURE PATHWAY - WATER 80RNE RIVER WATER pct / liter I

SAMPLE STATION lst QUARTER 2nd QUARTER 3rd QUARTER NUCLIDE NUMBER 4th QUARTER 01/08/85 03/12/85 04/09/85-06/19/85 07/10/85-09/03/85 10/08/85-12/17/85 K-40 12.28 Meantstd.dev. 6. E 01 L.T. L.T. 4. E 01 L.T. 6. E 01 L.T. 4. E 01 det./ total 0/2 0/2 0/2 0/2 range -- -- -- --

I-131 - 12.28 Meantstd.dev. 1. E 02 2.

L.T. L.T. E 02 L.T. 6. E 01 L.T. 3. E 02 det./ total O/2 0/2 0/2 range --

0/ 2 '

, Cs-137 12,28 Meanistd.dev. 4. E 00

' L.T. L.T. 3. E 00 L.T. 4. E 00 L.T. 3. E100 det./ total 0/2 0/2 0/2 0/2 range -- -- -- ..

(a) A tritium analysis and gamma scan is performed on the. quarterly composite of each station orly.

?

1 1

4 4

{

- - . = _ - - - _ . . _ - _ _ _ _ - . - - _ _ _ _ _ _ - _ _ _ _ .

WTELEDmE ISOTOPES TA8LE J'2 NE8RASKA PUBLIC POWER DISTRICT COOPER' NUCLEAR STATION EXPOSURE PATHWAY - WATER 8ORNE RIVER WATER pCl/ liter SAMPLE STATION lst QUARTER 2nd QUARTER 3rd QUARTER 4th QUARTER NUCLIDE NUMBER 01/08/85-03/12/85 04/09/85 06/16/85 07/10/85-09/03/85- 10/08/85-12/11/85 8e-1 12,28 L.T. 6. E 01 (0/2) L.T. 5. E 01 (0/2) L.T. 5. E 01 (0/2) .L.T. 5. E 01 (0/2)

K-40 12,28 L.T. 6. E 01 (0/2) L.T. 4. E 01 (0/2) L.T. 6. E 01 (0/2) L.T. 4. E 01 (0/2)

Mn-54 12,28 L.T. 4. E 00 (0/2) L.T. 3. E 00 (0/2) L.T. 4. E 00 (0/2) L.T. 3. E 00 (0/2)

Co-58 12,28 L.T. 5. E 00 (0/2) L.T. 4 E 00 (0/2) L.T. 5. E 00 (0/2) L.T. 5. E 00 (0/2)

Fe-59 12,28 L.T. 1. E 01 (0/2) L.T. 1. E 01 (0/2) L.T. 1. E 01 (0/2) L.T. 1. E.01 (0/2)

Co-60 12,28 L.T. 4. E 00 (0/2) L.T. 3. E 00 (0/2) L.T. 4. E 00 (0/2) L.T. 3. E 00 (0/2) 2n-65 12.28 L.T. 9. E 00 (0/2) L.T. 8. -E 00 (0/2) L.T. 8. E 00 (0/2) L.T. 7. E 00 (0/2) gn Zr-95 !?,28 L.T. 5. E 00 (0/2) L.T. 5. E 00 (0/2) L.T. 5. E 00 (0/2) L.T. 5. E 00 (0/2) co Ru-103 12,28 L.T. 8. E 00 (0/2) L.T. 7. E 00 (0/2) L.T. 7. E 00 (0/2) L.T. 8. E 00 (0/2)

Ru-106 12,28 L.T. 4. E 01 (0/2) L.T. 3. E 01 (0/2) L.T. 4. E 01 (0/2) L.T. 3 .- E 01 (0/2) 1-131 12, 28 L.T. 1. E 02 (0/21 L.T. 2. E 02 (0/2) L.T. 6. E 01 (0/2) L.T. 3. E 02 (0/2)

Cs-134 12.28 L.T. 4. E 00 (0/2) L.T. 3. E 00 (0/2) L.T. 4. E 00 (0/2) L.T. 3. E 00 (0/2)

Cs-137 12.28 L.T. 4. E,00 (0/2) L.T. 3. E 00 (0/2) L.T. 4. E 00 (0/2) L.T. 3. E 00 (0/2) 8a-140 12.28 L.T. 3. E 01 (0/2) L.T. 4. E 01 (0/2) L.T. 2. E 01 (0/2) L.T. 5. E 01 (0/2)

Ce-141 12,28 L.T. 2. E 01'(0/2) L.T. 1. E 01 (0/2) L.T. 1. E 01 (0/2) L.T. 2. E 01 (0/2)

Ce-144 12,28 L.T. 4 E 01 (0/2) L.T. 2. E 01 (0/2) L.T. 3 E 01 (0/2) L.T. 3. E 01 (0/2)

Ra-226 12.28 L.T. 1. E 02 (0/2) L.T. 6. E 01 (0/2) L.T. 9. E O! (0/2) L.T. 8. E 01 (0/2)

Th-228 12,28 L.T. 9. E 00 (0/2) L.T. 6. E 00 (0/2) L.T. 8. E 00 (0/2) L.T. 7. E 00 (0/7)

~~

~ ~ - - - - - - - - - - - - - -

K. SHORELINE SEDIMENT STATIONS 28 Shoreline sediment s'amples were collected in the spring and f all from Station 28,1.8 miles,150 degrees downstream of the release point of CNS.

They were analyzed for gamma emitters by means of a high resolution gamma spectrometer. 'In the samples collected in the spring the naturally occurring isotopes K-40, Ra-226 and Th-228 were detected at normal environmental l evels. Cesium-137, a fission ' product, was detected at an average level of 0.059 pCi/gm, dry.

For'the samples collected in the fall the naturally occurring isotopes were detected at about the same level as in the spring. Cesium-137 was found at a level of 0.155 pCi/gm dry. Cesium-134, an isotope with a relatively short half-life, produced in conjunction with Cs-137, was detected at a level of 0.090 pCi/gm, dry. In addition the activation product Mn-54 was detected at a level of 0.018 pCi/gm, dry and Co-60, also an activation product, at a level of 0.050 pCi/gm, dry.

59 1

TTELEDypE ISOIOPES TABLE K-1 NE8RASKA PUBLIC POWER DISTRICT COOPER NUCLEAR STATION

( EXPOSURE PATHWAY - AQUATIC i

SHORELINE SEDIMENT - PCl/ge, dry l

SAMPLE STATION MUCLIOE ist QUARTER 2nd QUARTER 3rd QUARTER NUMBER 4th' QUARTER 05/21/85 10/08/85 8e-7 28 Meanistd.dev. L.T. 2. E-01 2.1 1 0.7 E-01 det./ total 0/2 range --

1/2 4

K-40 28 Meantstd.dev.

det./ total 1.7 2 0.01E 01 1.6 2 0.02E 01 range 2/2 2/2

.(1.67-1.69)E 01 Mn-54 (1.61-1.64)E 01 28 Meantstd.dev. L.T. 2. 'E-02 .l.8 1 0.96E-02 det./ total 0/2 1/2 range --

'~

Co-60 28 Heantstd.dev. L.T. 2. E-02 5.0 t 2.0 E-02 det./ total 0/2 range --

2/2 C4 1-131 (3.6-6.5)E-02 C3 28 Meantstd.dev. L.T. 1. E-01 L.T. 9. E-02 det./ total 0/2 0/2 range --

' Cs-134 28 Meanistd.dev. L.T. 3. E-02 9.0 t 0.2.E-02 3 det./ total range O/2 2/2 (0,7-1.0)E-01

' Cs-137 28 Meantstd.dev.

det./ total 5.9 1 1.8 E-02 1.5 t.0.4 E-01 range 2/2- 2/2 ~

(4.6-7.1)E-02 (l;2-1.9)E-01 i

Ra-226 28 Meantstd.dev.

det./ total 2.4 2 0.09E 00 2.1 t 0.2 E 00 range 2/2 2/2 (2.3-2.5)E 00 (1.9-2.2)E 00 Th-228 28 Meantstd.dev.

det./ total 1.2 1 0.04E 00- 1.0 2 0.1 E 00 range 2/2 2/2 (1.17-1.23)E 00 (0.97-1.1)E 00

__ _ < _ _ . _ . . _m - . .

TABLE K-a NE8RASKA PUBLIC POWER DISTRICT COOPER NUCLEAR STATION EXPOSURE PATHWAY - AQUATIC SHORELINE SEDIMENT - pC1/ge, dry SAMPLE STATION ist QUARTER 2nd QUARTER

!' NUCLIDE NUMBER 3rd QUARTER 4th QUARTER 05/21/85 10/08/85 8e-7 28 2.

L.T. E-01 (0/2) 2.1 1 0.7 E-01 (1/2)

K-40 28 1.7 2 0.01E 01 (2/2) 1.6 2 0.02E 01 (2/2)

Mn-54 28 L.T. 2. E-02 (0/2) 1.8 2 0.96E-02 (1/2)

Co-58 28 L.T. 3. E-02 (0/2) L.T. 2. E-02 (0/2)

Fe-59 28 L.T. 7 E-02 (0/2) L.T. 4. E-02.(0/2)~

Co-60 28 2.

i L.T. E-02 (0/2) 5.0 t 2.0 E-02 (2/2)

Zn-65 28 6.

L.T. E-02 (0/2) L.T. 4. E-02 (0/2)

Zr-95 28 3.

L.T. E-02 (u/2)' L.T. 2. E-02 (0/2) cn Ru-103 28 L.T. 3. E-02 (0/2) L.T. 2. (-02 (0/2)

Ru-106 28 2.

L.T. E-01 (0/2) L.T. 1. E-01 (0/2)

I-131 28 L.T. 1. E-01 (0/2) L.T. 9. E-02 (0/2)

Cs-134 28 3.

L.T. E-02 (0/2)- 9.0 t 0.2 E-02 (2/2)

Cs-137 28 5.9 t.1.8 E-02 (2/2) 1.5 t O.'4-E-01 (2/2)

Ba-140 28 8.

L.T. E-02 (0/2) L.T. 3. E-02 (0/2)

Ce-141 28 L.T. 5. E-02 (0/2) L.T. 4 E-02 (0/2)

Ce-144 28 1.

L.T. E-01 (0/2) L.T. 1. E-01 (0/2)

RA-226 28 2.4 1 0.09E 00 (2/2) 2.1 t 0.2 E 00 (2/2)

Th-228 28 1.2 1 0.04E 00 (2/2) 1.0 1 0.1 E 00 (2/2) l 1

l 1

L. -AMBIENT RADIATION - THERM 0 LUMINESCENT 00SIMETERS (TLDs - SEE TABLES L-1 AND L-2) i STATIONS 01-10,20,44,51,56,58,59,66,67,71,79-91.94 i

Ambient radiation was monitored at 32 locations within a 10 mile radius of CNS and collected quarterly. The TLD at Station 51 disappeared during each of the first 3 quarters of 1985. It was apparently removed by vandals.

Station 94 was .added at the beginning of the fourth quarter of 1985 to replace Station 51. The quarterly averages for.all stations of ambient net gamma radiation ranged from 18.2 milliroentgen / quarter to 21.9 milli. Roentgen /

quarter. The highest exposure during each of:the four quarters was at Station 01 (0.1 mile, 225 degrees) and averaged 42.3 mR/ quarter. The lowest exposure was at Station 03 (2.5 miles, 338 degrees) and Station 09 (7.25 miles, 335 degrees) and averaged 18.2 and 17.6 mR/ quarter respectively.

The radiation at station 44, .which is the control station, was an average of 20.4 mR/ quarter. This was similar -to other stations ano to the average of all stations which was 20.7 mR/ quarter.

The average' total exposure for the year was 79.5 mR which is consider-ably below the 125 millirems per quarter specified in 10 CFR 20.105 for an unrestricted area. The relationship between milliroentgen (mR) and millirems (mr) is approximately one for the exposure conditions encountered. No plant effect from CNS was indicated.

i i

1 I

h 62

TABLE L-I NE6RASKA PUBLIC POWER DISTRICT COOPER NUCLEAR STATION EXPOSURE PATHWAY - AM8IENT GAMMA RADIATI0h:TLD milllRoent9en/ quarter SAMPLE STATION lst QUARTER 2nd QdARIER- 3rd QUARIER 4th QUARTER NUEL 10E NUMBER ____ 01/04/85-04/03/85 04/03/85-07/01/85 07/01/85-10/03/85 10/03/85-01/03/86 TLD 01 66.2 1 16.3 48.0 t 9.9 27.5 2 3.7 27.5 1 3.6 Gamma 02 21.3 t 1.0 19.0 1 0.5 18.9 1 1.1 17.6 2 0.9 03 20.6 2 0.5 18.2 1 0.6 18.0 1 1.1 15.8 1.9 04 i

21.2 1 0.8 19.2 t 0.8 18.7 t 0.9 16.6 1 1.2-05 17.5 t 0.8 18.8 1 0.7 cn 21.0 a 0.8 11.1 1 1.0 ca 06 21.8 t 0.5 19.1 2 0.6 18.9 t 1.1 16.9 1 0.9 07 18.1 2 0.9 19.4 t 0.8 19.3 1 0.6 17.!

0.9 08 18.4 1 0.8 19.7

0.5 i

20.0 t 1.2 17.9 1 0.9 09 17.2 t 0.8 18.2 1 0.7 18.2 1 0.9 16.9 1 0.8 10 21.7 t 0.6 18.4 1 1.2 19.1 1 1.0 11.6

0.6 20 19.4 1 0.8 19.0 1 0.7 20.1 1 1.2 18.2 1 1.1 44 19.8 1 0.8 21.2 1 1.2 21.7 1 1.4 18.7 1 1.2 51 --

(a) --

56 20.8 t 1.0 22.5 1 0.5 20.3 1 1.4 17.6 1 0.8 58 22.5 2 1.0 19.6 1 0.8 21.0 2 1.2 18.9

1.1 59 22.0 1 0.9 -19.8 2 0.6 2U.6 t 1.0 17.9 1 0.6 66 24.3 1 0.8 22.4 2 0.9 25.9 t 1.2 19.2 1 0.9 (a) The TLD f rom St ation 51 was missin9 due to vandailsa during the first three quarters of 1985. It was replaced by a TLD at Station 94 during the fourth quarter of 1985.

l

TABLE L-1 NE8HASKA PUBLIC POWER DISTRICT COOPER NUCLEAR stall 0N EXPOSURE PATHWAY - AMBIENT GAMMA RA01ATION: TLD milllRoentgen/ Quarter SAMPLE STAil0N lst QUARTER 2nd QUAR (ER 3rd QUARTER 4th QUARTER-NUCL10E NUMBER 01/04/85-04/03/85 04/03/85-07/01/85(b) 07/01/85-10/03/85 10/03/8(-01/03/86 TLD 67 21.3 1 0.9 21.5 2 0.5 25.3 t 1.3 18.1 2 0.6 Gamma 71 21.3 1 0.7 22.4 0.5 25.3 1 1.2 17.1 1 0.9 79 19.4 1 0.9 20.4 2 0.5 2,3.1 t 0.5 18.1 1 0.9 80 21.0 t 1.6 20.5 t 0.6 23.8

1.2 17.7 2 1.0 81 21.9 1 1.6 20.7 2 0.7 24.4

1.3 17.9 1 1.1

- en 82 16.7 t 1.0 21.1 2 0.6 22.4 t 0.8 17.1 t 0.8 4=

83 23.9

1.5 20.7 e 1.0 22.4 1 1.0 18.3

l'.1 84 18.7 1 1.0 20.5 s 1.1 23.1 1 1.1 18.9

1.0 85 17.5 1 0.3 19.6 2 0.9 18.7 t 1.1 17.8 t 0.6 86 19.4

0.8 21.3 1 0.8 24.2 1 0.9 18.5 t 0.6 87 18.9 1 0.8 19.4 t 1.0 23.8 1 1.1 17.1 1 0.9 88 17.6 1 0.5 19.4 2 0.9 23.3 1 1.0 .16.8

0.7 89 18.2 t 0.9 19.7 t-1.1 23.9

1.0 18.2 1 0.4 e'

90 17.9 2 0.8 19.8 1 0.8 24.0 t 1.5 17.7 t 0.6 91 18.8 1 0.9 20.4 2 0.5 21.0 t 1.2 19.5 1 0.8 94 22.5 t 1.1 Average / Quarter -20.0 t 2.0 mR/89 Days (c) 21.0 t 5.2 mR/89 days 21.9 t 2.6 mR/94 days 18.2 1 2.1 mR/92 days Average / Day 0.22 2 0.02 mR/ day 0.24 1 0.06 mR/ day 0.23 1 0.03 mR/ day 0.20 1 0.02 mR/ day Range (16.7-24.3) mR/89 days (18.2-48.0) mR/89 days (18.0-27.5) mR/94 days (15.8-27.5) mR/92 d ays Det./ Total 31/32 31/32 31/32 32/32 (b) No controls were subtracted from the results of 04/03-07/01, they were not annealed.

(c) The average gamma radiation for the first quarter does not include the reading from Station 01 since it was higher than the others and is close to the release point.

TABLE L-2 NEBRASKA PUBLIC POWER OISTRICT COOPER NUCLEAR STATION v

EXPOSURE PATHWAV - AMBIfNT GAMMA RADIATION: IL O I milliroentgen SAMPLE STAil0N AVER / QUARTER TOTAL mR/ year NUCL IDE NUM3fR 01/04/85-01/03/86 01/04/85-01/03/86 TLO 01 Gamma 42.3 1 18.6 169.2 02 '

19.2 1.5 16.8 03 18.2 2 2.0 72.6 04 18.9 1 1.9 75.7 05 18.6 t 1.8 14.4 cn on 06 19.2 1 2.0 76.7 07 18.5 t 1.1 73.9 08 19.0 t 1.0 16.0 09 17.6 1 0.7 70.5 10 19.2 t 1.8 76.8 20 19.2 t 0.8 76.7 Sl(a) -- --

44 20.4 1 1.4 81.4 56 20.3 1 2.0 81.2 58 20.5 t 1.6 82.0 59 20.1 1 1.7 80.3 66 23.0 t 2.9 91.8 i

(a) The TLDquarter fourth at Station 51 was missing during the first three quarters of 1985, it was replaced by a ILD at Station 94 during the of 1985.

. . . - . . - _A..

TA8tE L-2 NEBRASKA PUBLIC POWER OISTRICT COOPER NUCL E AR ST ATION EXPOSURE PATHWAY - AMBl[Ni GAMMA RA01All0N: ILO milliroentgen l SAMPLE STAil0N AVER / QUARTER TOTAL mR/ year NUCLIDE NUMBER 01/04/85-01/03/86 01/04/85-01/03/86 l

TLD 67 21.6 t 2.9 86.2 Gamma

, 11 21.1 2 3.1 86.7 19 20.4 1 2.4 81.6 80 20.8 1 2.5 83.0 81 21.2 t 2.7 84.9 82 19.3 1 2.9 17.3 83 21.3 1 2.4 85.3 84 20.3 2 2.0 81.2 m

cm 85 18.4 t 1.0 13.6 86 20.9 t 2.5 83.4 87 19.8 t 2.8 79.2 88 19.3 t 2.9 11.1 89 20.0 t 2.7 80.0 90 19.9

2.9 19.4 91 19.3 t 1.0 19.7 94 22.5 1.1 (c) --

All St at ions Aver age / Quarter 1985 20.7 1 4.1 mR/ quarter 19.5 1 4.1 Average total mR/ year Range (11.6 a?.31 (70.5-169.2)

(c) Station 94 was in use only during the 4th quarter of 1985.

ML20199E090

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