ML19341A124

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Environ Radioactivity Levels,Sequoyah Nuclear Plant,Annual Rept 1979
ML19341A124
Person / Time
Site: Sequoyah  
Issue date: 08/31/1980
From:
TENNESSEE VALLEY AUTHORITY
To:
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ML19341A120 List:
References
RH-80-7-SQ2, NUDOCS 8101220164
Download: ML19341A124 (53)
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Text

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TENNESSEE VALLEY AUTHORITY l

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l DIVISION OF OCCUPATIONAL HEALTH AND SAFETY sioiseo N

RH-80-7-SQ2

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ENVIRONMENTAL RADIOACTIVITY LEVELS SEQUOYAH NUCLEAR PLANT ANNUAL REPORT 1979 4

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August 1980

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' CONTENTS 4

' Introduction.

1 Figure 1 - Tennessee Valley Region 3

Table 1 - Environmental Radioactivity Sampling Schedule.

4

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Table 2 - Atmospheric and Terrestrial Monitoring Station Locations.

5

' Table 3 - Detection Capabilities for Environmental

Sample Analysis.

6 Table 4 - Radioactivity in Air Filter.

8 Table 5 - Maximum Permissible Concentrations for Nonoccupational Exposure 11 Atmospheric Monitoring.

13 f

Figure 2 - Atmospheric and Terrestrial Monitoring Network 15 Figure 3 - Local Monitoring Stations 16 Figure 4 - Site Monitoring Stations 17 Table 6 - Radioactivity in Air Filter.

18 i

Table 7 - Radioactivity in Rainwater 19 i

Table 8 - Radioactivity in lleavy Particle Fallout 20 i

Table 9 - Radioactivity in Charcoal Filters 21 Table 10 - Radioactivity in Atmospheric Moisture 22-Terrestrial Monitoring.

23 Table 11 - Radioactivity in Milk 25 Table 12 - Radioactivity in Vegetation 26 i

Table 13 - Radioactivity ir. Soil 27 Table 14 - Radioactivity in Well Water 28 Table _15 - Radioactivity in Public Water Supply.

29 Table 16 - Environmental Gamma Radiation Levels 30 Table 17 - Radioactivity in Food Crops 31 i

Table 18 - Radioactivity in Poultry.

33 j

Reservoir Monitoring 35 l

Table 19 - Sampling Schedule - Reservoir Monitoring.

37 1

_ Figure 5 - Reservoir Monitoring Network.

38 Table 20 - Radioactivity in Surface Water Total 39 Table 21 - Radioactivity in Channel Catfish (Flesh).

40 Table 22 - Radioactivity in White Crappie (Flesh) 41 Table 23 - Radioactivity in Smallmouth Buffalo (Flesh).

42 i

Table 24 - Radioactivity in Smallmouth Buffalo ( Whole) 43 Table 25 - Radioactivity in Plankton.

44 j.

Table 26 - Radioactivity in Sediment 45 I ?

Table 27 - Radioactivity in Clam Flesh.

46 Table 28 - Radioactivity in Clam Shell.

47 Quality Control.

49 Conclusions.

49 I

l

ENVIRONMENTAL RADIOACTIVITY LEVELS SEQUOYAH NUCLEAR PLANT s

l 1979 i

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Introduction The Sequoyah Nuclear Plant (SQN), being constructed by the Tennessee Valley Authority, is located on a site owned by TVA containing 525 acres of land in Hamilton County, Tennessee, bounded on the east by Chickamauga Rese rvoir. See figure 1.

The site is 12 miles (19.3 kilometers) northeast of Chattanooga, Tennessee and 11 miles (17.7 kilometers) west-northwest of Cleveland, Tennessee. The plant will consist of two pressurized water reactors; each unit is rated at 3,423 MWt and 1,171 MWe. Fuel was loaded in unit 1 on March 1, 1980.

The preoperational environmental monitoring program has the objective of establishing a baseline of data on the distribution of natural and manmade radioactivity in the environment near the plant site.

i TVA has collected data in this preoperational environmental 4

monitoring program since 1971. Since the operation of the plant has been delayed, the program was reduced as of November 1, 1973. All continuous collections (air and charcoal filters) were discontinued as were milk and monthly river water samples. Only quarterly samples of soil, vegetation, well water, public water, river water, plankton, Asiatic clams, sediment, and fish, and annual samples of food products were collected. The full sampling program was reinstated in February 1976. The program outlined 1

herein describes the sampling program as conducted in 1979.

Field staffs in the Division of Occupational Health and Safety, j

the Division of Water Resources, and the Division of Natural Resources j

Services carried out the sampling program outlined in Tables 1 and 19.

Sampling locations are shown in figures 2, 3, 4, and 5, and Table 2 describes the locations of the atmospheric and terrestrial monitoring stations. All the radiochemical and instrumental analyses were conducted in a central laboratory at Muscle Shoals, Alabama. Alpha and beta analyses were performed on Beckman Low Beta II and Beckman Wide Beta II low-background proportional counters. Two Nuclear Data Model 100 multichannel analyzer 7

systems employing sodium iodide, NaI (TE) detectors and one Nuclear Data Model 4420 in conjunction with germanium, Ge(Li) detection systems, were i

used to analyze the samples for specific gamma-emitting radionuclides.

Samples of water, vegetation, air particulates, food crops, and charcoal (specific analysis for 131 1) are routinely counted with NaI (TE) detection systems.

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2 If significant concentrations of radioisotopes are identified, or if there is a reasonable expectation of increased radioactivity levels (such as during periods of increased fallout), these samples are counted on the 3

Ge(Li) system.

Identification of gamma-emitting radionuclides in all other types of samples is routinely performed by analysis on the Ge(Li) system.

TVA fabricated beta gamma coincidence counting systems are utilized for the determination of 131I concentrations in milk.

Data were entered in computer storage for processing specific to the analysis conducted. A computer, employing an ALPilA-M least-squares code, was used to solve multimatrix problems associated with estimating the activities of the gamma-emitting nuclides analyzed by NaI(TE). The data obtained by Ge(Li) detectors were resolved by the ND-4420 software.

The detection capabilities for environmental sample analyses given as the nominal lower limits of detection (LLD) are listed in Table 3.

Samples processed by NaI(TE) gamma spectroscopy were analyzed for 13 specific gamma-emitting radionuclides and radionuclide combinations *. For these analyses, radionuclide combinations such as 103,100Ru and 05Zr-Nb are analyzed as one radionuclide. All photopeaks found in Ge(Li) spectra were identified and quantified. Many of the isotopes identified by Ge(Li) spectral analysis are naturally occurring or naturally produced radio-isotopes, such as Be, K, 212Bi, 214Bi, 212Pb, 214Pb, 22sRa, etc.

LLD's 7

40 for the analysis of the radionuclides listed below* are given in Table 3B.

LLD's for additional radionuclides identified by Ge(Li) analysis were calculated for each analysis and nominal values are listed in the appro-priate data tables.

In the instance where an LLD has not been established, an LLD value of zero was assumed. A notation in a table of "

values

<LLD" for an isotope with no established LLD does not imply a value less than 0; rather it indicates that the isotope was not identified in that specific group of samples.

For each sample type, only the radionuclides for which values greater than the LLD were reported are listed in the data tables.

TVA's Radioanalytical Laboratory participates in the Environmental Radioactivity Laboratory Intercomparison Studies Program conducted by EPA-Las Vegas. This program provides pe: iodic cross-check samples of the type and radionuclide composition normally analyzed in an environmental monitoring program. Routine sample handling and analysis procedures were employed in the evaluation of these samples. Gamma spectral analyses were performed on NaI detectors. The results received during calendar year 1979 are shown in Table 4.

The 130 limits are corrected for triplicate deter-minations.

  • The following radionuclides and radionuclide combinations are quantified bg4the ALPHA-M least-squares computer code:

Ce; Cr; 131I; 103,100Ru; 141 144 51 Co; 4b ; and 137 05Zr-Nb; 58Co; Mn; Zn; 60 K

140Ba-La.

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Table 1 ENVIRONMENTAL RADIOACTIVITY SAMPLING SCHEDULE Heavy Air Charcoal Rain-Particle Atmospheric River Well Public Aquatic Life Station Location Filter Filter water Fallout Moisture Soil Vegetation Milk Water Water Water and Sediment Chattanooga W

W M

M A

M Dayton W

W M

M BW A

M Sale Creek W

W M

M A

Daisy W

W M

M A

M Red Back W

W M

M A

Volunteer Ce :u:ance Works (Harrison)

W W

M M

A Harrison Bay W

W M

M A

Georgetown W

W M

M A

l Hamilton County Park W

W M

M A

j Work W

W M

M A

Site N W

W M

M BW A

Site S W

W M

M BW A

Farm L Q

M Farm J*

Q W

Farm M Q

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Chickamauga Reservoir M

Q/S

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E. I. Dupont M

i Cleveland, TN M

i C. F. Industries M

On Site Well M

Farm Ma M

Farm S (control)

Q M

M Farm B (control)*

Q M

Farm C (control)*

Q M

W - Weekly BW - Biweekly M - Monthly (every 4 weeks)

Q - Quarterly S - Semiannually A - Annually

  • Sampling began: Farm J, 5/30/79; Farm B, 6/7/79; and Farm C, 6/14/79.

5 Table 2 e

ATMOSPHERIC AND TERRESTRIAL MONITORING STATION LOCATIONS SEQUOYAH NUCLEAR PLANT Approximate Distance and Sample Station Direction from Plant LM-1 SQ, Southwest 0.75 miles SW (1.2 kilometers)

LM-2 SQ, Northeast 0.75 miles N (1.2 kilometers)

PM-1 SQ, Northwoods, TN 10.5 miles WSW (16.9 kilometers)

"M-2 SQ, County Park, TN 3.75 miles SW (6.0 kilometers)

PM-3 SQ, Daisy, TN 5.5 miles W (8.8 kilometers)

PM-4 SQ, Sale Creek, TN 10.5 miles N (16.9 kilometers) i PM-5 SQ, Georgetown, TN 9.0 miles ENE (14.5 kilometers)

PM-6 SQ, Work, TN 4.5 miles NNE (7.2 kilometers)

PM-7 SQ, Harrison Bay, TN 3.5 miles SE (5.6 kilometers)

PM-8 SQ, Harrison, TN 8.75 miles SSW (14.1 kilometers)

RM-1 SQ, Chattanooga, TN (Control) 16.73 miles SW (27.0 kilometers)

RM-2 SQ, Dayton, TN (Control) 17.75 miles NNE (28.6 kilometers)

Farm J 1.25 miles W (2.0 kilometers) i, Farm L 2.75 miles NNE (4.4 kilometers) i Farm M 3.5 miles NNE (5.6 kilometers) 1 Farm Ma 0.75 miles W (1.2 kilometers)

Farm B (Control) 43.0 miles NE (69.2 kilometers)

Farm C (Control) 16.0 miles NE (25.7 kilometers)

Farm S (Control) 12.0 miles NNE (19.3 kilometers) e e

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Table 3 DETECTION CAPABILITIES FOR ElfVIROIDE3ffAL SAMLE ANALYSIS A.

Specific Analyses NOMINAL IDWER LIMIT OF DETECTION (LLD)*

Fi.h.

Air Vegetation Soil and clan flesh.

Foods, seat.

Particulates Charcoal Fallout Water and grain Sed iment

plankton, Clam shells poultry.

Milk pC1/m' pCi/m' aC1/km 901/1 pC1/a. dry pC1/a, dry pC1/g, dry PC1/a. dry pC1/kr wet pC1/1 2

Total a 0.4 0.01 1.5 Cross a 0.005 2.0 0.05 0.35 0.1 0.7 Cross S 0.01 0.05 2.4 0.20 0.70 0.1 0.7 25

'N 330 0.5 a:a1 0.01

Sr 0.005 10 0.25 1.5 0.5 5.0 40 10 s Sr 0.001 2

0.05 0.3 0.1 1.0 8

2

  • All Lib values for isotopic separations are calculated by the method developed by Pasternack and Harley as der;tibed in HASL-300.

Factors such as sample size. decay time, chemical yield, and counting ef ficiency may vary for a given sample; these variations may change the LLD value for the gi*ren sample. The assumption is made that all samples are analyzed within one week of the collection date. Conversion factors: 1 pCi = 3.7 x 10

  • Bq; I aci = 3.7 x 10' Bq.

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Table 3 b

DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALYSIS B.

Canssa Analyses NOMINAL LO'=*ER LIMIT OF DETECTION (LLD)

  • ater Vegetation Soil and Clas flesh Foods, tomatoes Heat and Air particulates and milk and grain sediment Fish and plankton Clam she1xs potatoes. etc.)

poultry pC1/m' pCi/1 pC1/a. dry _

PC1/a. dry pC1/a. dry pC1/a. dry _

pC1/a dry pC1/kt vet pC1/ ke, w:

N_a l Ce(L1)

M Ce(Lin M

  • Ce(Li)**

Nat Ge(L1)

Nat Ce(L1)

Nat Ge(L1)

Nat Ce(L1)

NaI Ce(L1)

NaJ_ Ge(L1) a 8'Ce 0.03 38 0.55 0.35 0.35 0.35 38 90 8Ce 0.02 33 0.22 0.06 0.06 0.35 0.06 33-40 I

    • Cr 0.07 0.03 60 44 1.10 0.47 0.60 0.10 0.60 0.10 0.56 0.60 0.10 60 44 200 90 1

0.01 0.01 15 8

0.35 0.09 0.20 0.02 0.20 0.02 0.07 0.20 0.02 15 8

50 20 883

' ' ' ' 8 "Ru 0.04 40 0.65 0.45 0.45 0.45 40 150

Ru 0.03 40 0.51 0.11 0.11 0.74 0.11 40 90

Cs 0.01 0.02 10 26 0.20 0.33 0.12 0.08 0.12 0.08 0.48 0.12 0.08 10 26 40 50

" "Cs 0.01 0.01 10 5

0.20 0.06 0.12 0.02 0.12 0.02 0.08 0.12 0.02 10 5

40 15

Zr-Nb 0.01 10 0.20 0.12 0.12 0.12 10 40 i

"Zr 0.01 10 0.11 0.03 0.03 0.15 0.03 10 20 "Nb 0.01 5

0.05 0.01 0.01 0.07 0.01 5

15

" Co 0.02 0.01 15 5

0.23 0.05 0.20 0.01 0.20 0.01 0.07 0.20 0.01 15 5

55 15

Mn 0.02 0.01 10 5

0.20 0.05 0.15 0.01 0.15 0.01 0.08 0.15 0.01 10 5

40 25 ssZn 0.02 0.01 15 9

0.25 0.11 0.23 0.02 0.23 0.02 0.17 0.23 0.02 15 9

70 20 Co 0.01 0.01 10 5

0.17 0.06 0.11 0.01 0.11 0.01 0.08 0.11 0.01 10 5

30 15 se

K 0.10 150 2.50 0.90 0.90 0.90 150 400 8Ba-La 0.02 15 0.68 0.15 0.15 0.15 15 50 lBa 0.02 25 0.34 0.07 0.07 0.30 0.07 25 50 lLa 0.01 7

0.08 0.02 0.02 0.10 0.02 7

15

  • The NaI(TI) LLD values are calculated by the method developed by Pasternack and Harley as described in HASL-300 and Nucl. Instr. Methode 91, 533-40 (1971). These LLD values are expected to vary depending on the activities of the components in the samples. These figures do not-I represent the LLD values achievable on a given sample. Water is counted in a 3.5-L Marinelli beaker. Vegetation, fish, soil, and sediment are counted in a 1-pint container as dry weight. The average dry weight is 120 grams for vegetation and 400-500 grams for soil sediment and fish. Meat and poultry are counted in a 1-pint container as dry weight, then corrected to wet weight using an average moisture content of 70%. Average dry weight is 250 grams. Air particulates are counted in a well crystal. The counting system consists of a multichannel analyzer and either a 4" x 4" solid or 4" x 5" well Nal(TI) crystal. The cou ting time is 4000 seconds. All calculations are performed by the least-squares computer program ALPHA-M.

Ths assumption is made that all samples are analyzed within one ween of the collection date.

    • The Ce(Li) LLD values are calculated by the method developed by Pasternack and Harley as described & MASL-300. These LLD values are expected to vary depending on the activities of the components in the samples. These figures do not represent the LLD values achievable on given samples.

Water is counted in either a 0.5-L or 3.5-L Harinelli beaker. Solid samples such as soil, sediment, and clan snells are counted in a 0.5-L Marinelli beaker as dry weight. The average dry weight is 400-500 grams. Air filters and very small volume samples are counted in petrie dishes centered on the detector endcap. The counting system consists of a ND-4420 multichannel analyzer and either a 25g,143,16Z or 29% Ge(L1)

I detector. The counting time is normally 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />. All spectral analysis is performed using the software provided with the ND-4420.

The assumption is made that all samples are analyzed within one week of the collection date.

y Conversion factor:

1 pCi - 3.7 x 10-z Bq.

I

Table 4

n Results Obtained in Interlaboratory Comparison Program A.

Air Filter (pCi/ filter)

Gross Alpha Gross Beta Strontium-90 Cesium-137 EPA value TVA EPA value TVA EPA value TVA EPA value TVA Date

( 30)

Avg.

( 30)

Avg.

( 30)

Avg.

'( 30)

Avg.

1/79 51 9 4

18 1 9 20 6

2.7 6

6 9

7 3/79 14 9

14 63 ! 9 64 21 ! 2.7 17 21 9

18 6/79 9

9 9

30 9

31 10 2.7 9

10 9

9 10/79 10 9

10 31 9

33 10 2.7 10 12 ! 9 11 B.

Water (pCi/1)

Gross Alpha Gross Beta Strontium-89 Strontium-90 Tritium Iodine-131*

EPA value TVA EPA value TVA EPA value TVA EPA value TVA EPA value TVA EPA value TVA Date

(!3c)

Avg.

( 30)

Avg.

( 30)

Avg.

(!30)

Avg.

_$t30)

Avg.

( 30)

Am 11/78 11 ! 9 12 26 9

27 12/78 2030 400 2100 1/79 6! 9 7

16 2 9 17 14 9

14 6

2.7 6

2/79 1280!570 1260 3/79 10 9

10 16 ! 9 18 4/79 2270 400 2270 40 ! 7 40 5/79 18 9

15 22 ! 9 22 23 ! 9 24 30 2.7 26 6/79 1540 580 1590 7/79 9

9 11 12 9

13 8/79 1480!580 1300 26 9

26 9/79 5

9 8

40 ! 9 43 3

9 4

23 2.7 25 10/79 1560 640 1400 131 I'l OSpecific analysis for 1 to test the procedures used for the analysis of l in milk.

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Table 4 (Contd)

Results Obtained in Interlaboratory Comparison Program C.

Gamma-Emitting Radionuclides in Water (pCi/1) 51 Cr

Co

'5 186Ru' 13"Cs 137 Zn Cs EPA value TVA EPA value TVA EPA value TVA EPA value IVA EPA value IVA EPA value TVA Date

( 30)

Avg.

( 30)

Avg.

( 30)

Avg.

( 30)

Avg.

(i30) h

( 30)

Ag i

10/78 117 10 150 23 9

24 82 9

78 46 9

42 25 9

29 125 10 120 2/79 0

9 0

9 9

9 21 9

25 0

9 0

6 9

6 12 9

12 6/79 0

9 0

47 i 9 48 0

9 0

0 9

0 71 9

72 0

9 0

l 10/79 113 10 108 6

9 7

019 0

0 9

0 7

9 9

11 9

11 i

D.

Tritium in Urine (pCi/1)

Date EPA value ( 30)

TVA avg.

12/78 2,150 400 2330 3/79 3,300 600 2350 6/79 1,610 580 1590 9/79 13,200 710 13350 i

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Table 4 (Contd) 5 a

i Results Obtained in Interlaboratory Comparison Program E.

Milk (pCi/1) asSr

Sr I'l 137 l

Cs I"'Be

"'K EPA value TVA EPA value TVA EPA value TVA EPA value TVA EPA value TVA EPA value TVA Date

( 30)

Avg.

( 30)

Avg, (i30)

Avg.

(13c)

Avg.

( 30)

Avg.

( 30)

Avg.

1 1/79 33 i 9 33 19 i 2.7 21 105 i 10 110 49 i 9 48 019 2

1560 135 1520 4/79 38 9

38 54 i 5.2 61 96 2 9 95 154 i 14 150 019 0

15601135 1450 I

7/79 5 i 9 5

11 2.7 13 17 9

21 12 i 9 11 019 0

1630 145 1570 1

10/79 25 i 9 25 17 1 3.5 22 637 1 55 636 49 i 9 45 0i9 0

14701125 1490 F.

Food (pCi/kg wet weight) 3/79 48 i 9 53 22 i 2.7 27 90 1 9 91 74 i 9 73 019 0

27001235 2810 7/79 819 12 3 1 1.1 7

18 i 9 16 33 1 9 35 019 0

2650 225 3000 11/79 Results not received at this time t

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Table 5 MAXIMUM PERMISSIBLE CONCENTRATIONS FOR NONOCCUPATIONAL EXPOSURE MPC In Water In Air pCi/l*

pCi/d *

{

Alpha 30 Nonvolatile beta 3,000 100 Tritium 3,000,000 200,000 337 Cs 20,000 500 losetosRu 10,000 200 3""Ce 10,000 200

'5Zr '5Nb 60,000 1,000 I"'Ba 3"'La 20,000 1,000 13'I i*

300 100 85 Zn 100,000 2,000 5"Mn 100,000 1,000 5

5'Co 30,000 300 es Sr 3,000 300

Sr 300 30 5'Cr 2,000,000 80,000 13"Cs 9,000 400 saco 90,000 2,000

]

  • 1 pCi = 3.7 x 10-2 Bq.

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--.--,---c.-

13 Atmospheric Monitoring i

l The atmospheric monitoring network is divided into three subgroups.

Two local air monitors are located within the plant boundary.

Eight perimeter air monitors are located at distances out to 10.5 miles (16.9 kilometers) from the plant in the towns of Sale Creek, Daisy, Red Bank (Northwoods),

Harrison, and four other densely populated areas.

The remote air monitors used as control or baseline stations, are located at distances out to 17.75 miles (28.6 kilometers) from the plant in the town of Dayton and the city of Chattanooga. See figures 2, 3, and 4.

At each monitor, air is continuously pulled through a Follingsworth 3

and Voss HV-70 particulate filter at a regulated flow of 3 ft / min (0.035 3

m / min).

In series with, but downstream of, the particulate filter, is a charcoal filter used to collect iodine. Each monitor has a collection tray and storage container to collect rainwater on a continuous basis, and a horizontal platform covered with gummed acetate to catch and hold heavy particle fellout. Moisture is collected from the atmosphere at each local monitor and at one remote monitor and analyzed for tritium. Thermolumi-nescent dosimeters are used to record gamma radiation levels at each remote and perimeter station and at 8 onsite stations.

Each of the local and perimeter air monitors is fitted with a GM tube that continuously scans the particulate filter. The disintegration rate of the atmospheric radioactivity is continuously recorded at each station. These stations will detect any significant airborne release from SQN.

Air filters are collected weekly and analyzed for gross beta activity. During this period ten samples were not obtained because of equipment malfunction and two samples were not analyzed because of the loss of sample flow data. Two samples were lost during the strontium analysis.

No analyses are performed until three days after sample collection. The samples are composited monthly for anal sis of specific gamma-cmitting Sr, 9f radionuclides and quarterly for 89 Sr analysis. The results are 1

presented in Table 6.

With reference to Table 5, which contains the maximum permissible concentrations (MPC) recommended by 10 CFR 20 for nonoccupational exposure, it is seen that the maximum beta concentration is 0.40 percent MPC.

Rainwater is collected and analyzed for gross beta activity, specific gamma-emitting isotopes, radiostrontium, and tritium. During this period two samples were not obtained because of insufficient rainfall. For the gross beta analysis, a maximum of 500 ml of the sample is boiled to dryness and counted. A gamma scan is performed on a 3.5-liter monthly sample. The strentium isotopes are separated chemically and counted in a i

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h' 14 low background system. The results are shown in Table 7.

The highest value reported for beta activity is 0.56 percent of the MPC for drinking water.

The gummed acetate that is used to collect heavy particle fallout is changed monthly. The sample is ashed and counted for gross beta activity.

The results are given in Table 8.

Charcoal filters are collected and analyzed for radioiodine.

During this period three samples were lost, ten were not obtained because of equipment malfunction, and two were not analyzed because of the loss of sample flow data. The filter is counted in a single channel analyzer system. The data are shown in Table 9, where the highest value reported is 131I.

0.08 percent MPC for An atmospheric moisture collection device containing molecular sieve is located at each local monitor and at one remote monitor.

Samples are taken every other week, the moisture driven off the molecular sieve, collected in a cold trap, distilled, and counted for tritium content. The results are shown in Table 10, where the highest value reported is 0.004 8

percent MPC for H in air.

In this reporting period, insufficient material for analysis was available in four samples, and five samples were not collected because of equipment malfunction.

O o

4

Figure 2 15 ATMOSPHERIC AND TERRESTRIAL MONITORING NETWORK ATMOSPHERIC AND TERRESTRIAL SAMPLES COLLECTED AT EACH STATION O LOCAL MONITOR

@ PERIMETER MONITOR

$ REMOTE MONITOR g

N RM-2S SALE CREEKg PM-4 S PM 59 SG0Y M-6S 8 EORGETOWN e

FM 3S WORK OAISYi LM 25

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SNP l

LM-lS PM-7S PM-l PM-2 SIG L RED BAN LEVELAND hN (8.0 ilometers)

SPM 8S CHICKAMAUGA DAM l

l 10 MILES (16.1 kilometers)

I CHAT TANOOGA N

LOOKOUT 15 MILES MOUNTAIN (24.1 kilometers) 20 MILES (32.2 kilometers) e

16 Figure 3 SE OA N CLEA PLA 1

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TABLE 7 RADIOACTIVITY IN RAINmATER PCI/L - 0.037 BG/L NAME OF FACILITY SEQUoVAN DOCKET No. Ra-80-7-502 LOCATION OF FACILITY HAMILTON TENNESSEE REPORTING PER100 1979 TYPE AND lower LlwIT ALL CONTROL NUM8FA 0F TOTAL NUMBER CF INDICATOR LOCATIONS LOCATf0N wfTH HIGHFST ANNUAL MFAN LOCATIONS NONROUTlNE OF CNALYSIS DETECTION MEAN (

NAME RANGE {l R&hGE{l RANGU )

MEAN (

MEAN (F REPORTED PEREDBMED (LLO) a DISTANCF AND OfPECTION 3EASUREMENTS_?

GROSS BETA 2.400 4.19(

62/ 1281 LM1 SOUTHWEST 4.90(

9/

131 5.99(

16/ 261 154 2.49-8.20 0.75 MILES Sw 2.69-8.02 2.63-16.73 GLMM) (NAll 135 BA-140 LA-140 15.000 19.76(

5/ 1131 DAISY, TN 23.e0(

1/ 12) 22 VALUES <LLO 15.80-23.80 5.5 MILES W 23.80-23.80 I-131 15.000 3e.88(

5/ 113)

HARRISON. TN 50.10(

1/ Ill 16.40(

3/ 221 24.90-50.10 8.15 MILES 55=

50.10-50.10 15.50-17.20 BE-7 kJT ESTA8 44.78(

44/ 113)

HARRISON, TN 62.96f 5/ III 36.381 10/ 22) 7.30-100.90 8.75 MILES Ssw 12.20-106.90 14.40-60.30 GAMMA (GELI) 21 K-40 NOT ESTAB 106.74(

2/ 17)

HARRISON, TN 126.00E 1/

23 124.33(

3/

41 87.47-126.00 8.75 MILES SSw 126.00-126.00 67.10-156.00 PI-214 NOT ESTA8 29.22(

8/ 17)

DAISY, TN 40.73E 1/

13 10.72(

1/

43 13.95-40.73 5.5 MILES w 40.73-40.73 10.72-10.72 PB-214 NOT ESTAB 22 08(

6/ I?)

LM1 SOUTHWEST 35.13t 1/

23 4 VALUES <LLD 13.26-35.13 0.75 MILES SW 35.13-35.13 PB-212 NOT ESTAB 21 94(

S/ 17)

DAISY, TN 35.42(

1/

1) 4 VALUES <LLD 9.41-35.42 5.5 MILES W 35.42-35.42 bE-7 NOT ESTAB 55.00(

1/ 17)

SALE CREEK, TN 55.00(

1/

Il 113.01(

2/

el 55.00-55.00 10.5 MILES N 55.00-55.00 49.01-177.00 SR C9 10.000 130 VALUES <LLO 26 VALUES <LLD 156 ANALYSIS PEHFORMED SR 50 2.000 130 VALUES <LLD 26 VALUES (LtD 156 ANALYSIS PERFORMED TRITIUM 330.000 398.16(

11/ 122)

HARRISON BAY. TN 511 00(

1/ 12) 367.50(

2/ 25) 147 332.00-511.00 3.5 MILES SE 511.00-511.00 364.00-3 71.f. 0 a.

Nominal Lower Limit of Detection (LLD) as described in Table 3.

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

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TABLE 8 RADI0 ACTIVITY IN heavy PARTICLE FALLOUT b

MCI /Km(2) - 37000000.00 RQ/Mp(2)

NAME OF FACILITY SEQUOYAH DOCKET NO. RM-80-7-so2 LOCATION OF FACILITY Haw 1LTON TENNESSEE RERORTING PERIOD 1979 TYPE AND LOWER LIMIT ALL CONTROL h0M8ER of TOTAL NUMBER OF INDICATOR LOCATIONS LOcaff0N WITH HIGNEST AANUAl MEAN LOC 4T!0NS h0NROUTINE OF ANALYSIS DETECTION MEAN (F)

NAME MEAN (F)

MEAN (Fl REPORTED PE"EDEMED t t i 1'18 RANGEb OfSTANCF AND DIRECTION RANGEb pawarb wpgsygggggyg 3 GROSS BETA 0.050 0.20( 130/ 130)

SALE CREEFe TN 0.28(

13/ 133 0.20(

26/ 26) 156 0.06-0.54 10.5 MILES N 0.11-0.49 0.07-0.46 a.

Nominal Lower Limit of Detection (11D) as described in Table 3.

b.

Mean and range based upon detectable wasurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

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=

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RADI0 ACTIVITY IN CHARC0AL FILTERS PCI/M(3) 0.037 SQ/Pt3) hAME OF FACILITY SEQUOYAH 00CKET No. Re-80-7-SQ2 LOCATION OF FACILITY HANILTON TENNESSEE REPORTING PERIOD 1979 TYPE AND lower LIMIT ALL CONTROL NUMBER OF TOTAL NUMBER OF INDICATOR LOCATIONS LocAffok w r T>' MIGPFS T AANUAt > FAN LOCATIONS NONROUTINE 0F CNALYSIS OETECTION NEAN (

hAME RANGF{l RANGF{}

RANGE {l MEAN (

WEAN (

REPORTED i

_REDat'ED f I t I'l*

DISTANcF AND DIRFCTION E MBEMENTS_j IUDINE IN AIR 0.010 0.02( 143/ 509)

COUNTY PARK. TN 0.02(

15/ 52s 0.02(

25/ 100) 8 609 0.01-0.05 3.75 MILES Sw 0.01-0.05 0.01-0.08 t

a.

Nominal Lower Limit of Detection (LLD) as described in Table 3.

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parentheris (F).

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T 48LE 10 RADI0 ACTIVITY IN ATMOSPHEAIC N0!STURE PCI/Mt3) 0.037 BG/> t 3)

NAME OF FACILITY SEGUOYAH 00CMET No. HH-80-7-Sc2 LOCATION OF FACILITY MAMILTON T E NNESSE E REPOETING PERIOD 1979 TYPE AND lower LIMIT ALL CONTROL NUW9ER OF TOTAL NUMBER OF INDICATOR LOCATIONS LOCAT10N hTTH HIGPFST ANNUAL WFAh LOCATIONS NONROUTINE OF ANALYSIS DETECTION MEAN (

NAME WEAN (

MEAN (FI REPORTED PERGM

__ ILL n t

  • RANGE {l DAhGE{n D

DISTANCF AND DIPECTIO*.

pahGF uEasupEgENTS ;

TkITIUM NOT ESTa8 2.761 40/ 47)

LM2 NokTNEAST 3.006 20/ 243 2.004 21/ 228 69 C.00-8.00 0.75 MILES N 0.00-8.00 0.00-5.00 s.

Nominal Lower Limit of Detection (LLD) as described in Table 3.

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

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23 Terrestrial Monitoring Milk Milk was collected from two farms within a 5-mile radius of the plant (see figure 3), and from one control farm.

In addition, sampling was initiated in May at a farm within 2 miles of the plant and in June at 2 additional control farms. Samples from the farm nearest the plant were collected weekly while all other samples were collected monthly. Raw milk 131 is analyzed for 1, gamma-emitting isotopes, and for radiostrontium. The results are shown in Table 11.

Five samples were unaeailable during this reporting period and insufficient sample was available for 131 I analysis in nine samples and for strontium analysis in ten samples.

4 V.E_e_ta tion

?

Vegetation samples were collected quarterly from the farms from which milk was collected and analyzed for gross beta activity, gamma-emitting radionuclides, and strontium-89,90 content. Approximately 1-2 kilograms of grass was broken or cut at ground level and returned for analysis. Efforts were made to sample vegetation that was representative of the pasturage where cattle graze. Table 12 gives the results obtained from the laboratory analyses.

l Soil i

Soil samples were collected annually near each monitoring station i

  • to provide an indication of any long-term buildup of radioactivity in the environment. An auger or " cookie cutter" type sampler was used to obtain samples of the top two inches (5 cm) of soil. These samples were analyzed for gross beta activity, gamma-emitting radionuclides, and for strontium-89 and -90.

The results are given in Table 13.

I Ground Water An automatic sequential-type sampling device has been installed on a well down gradient from Sequoyah Nuclear Plant. A composite sad.ple from this well is analyzed for gross beta activity and gamma-emitting radionuclides monthly and composited quarterly for determination of tritium.

A grab sample is also taken from a farm near the plant and a control well across the river from the plant. The results of the analysis of well water are shown in Table 14 and indicate the maximum beta concentration with reference to Table 5 is 0.17 percent MPC. A gross beta analysis was not performed on one sample during this period.

4 3

4 1

4

24 Public Water l

Potable water supplies taken from the Tennessee Fiver in the vicinity of Sequoyah Nuclear Plant are sampled and analyzed for gross beta, gamma-emitting radionuclides, 89'98Sr, and tritium. The first potable water supply downstream from ths plant is equipped with an automatic templer with composite samples analyzed monthly.

Five additional water supplies are sampled monthly by the collection of grab samples. One of the l

grab samples was not taken during this period. The results, shown in Table 15, indicate that the maximum beta concentration is 0.23 percent MPC.

Environmental Gamma Radiation Levels Thermoluminescent dosimeters (TLD's) were placed at eight stations around the plant near the site boundary (see figures 3 and 4) and at the perimeter and remote monitors to determine the gamma exposure rates at these locations. The TLD's were changed approximately every three months. The quarterly gamma radiation levels determined from these TLD's are given in Table 16.

It should be noted that, even though the plant has not achieved criticality, the average radiation levels onsite are generally 2-5 mR/ quarter higher than the levels offsite. This may be attributable to natural variations in environmental radiation levels, earth moving activities onsite, the mass of concrete employed in the construction of the plant, or other influences.

Poultry and Food Crops Food crops and poultry raised in the vicinity of Sequoyah Nuclear Plant are sampled annually as they become available during the growing season.

During this sampling period, samples of corn, green beans, turnip greens, tomatoes, and poultry were collected and analyzed for gross beta and specific gamma-emitting radionuclides. The results are given in Tables 17 and 18.

No sample of corn was taken from a control location.

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T ABLE 11 RADIOACTIv!TY IN MILK PCI/L - 0.037 BQ/L NAME OF FACILITY SEQUOYAH 00CMET No. R4-80-7-502 LOCATION OF FACILITY HAMILTON TENNESSEE REPORTING PERIOD 1979 TYPE AND lower LIMIT ALL CONTROL NUMBER OF TOT &L NUMBER OF INDICATOR LOCATIONS LOfATION WITH HIGMFSY ANNUAL WFAN LOCATIONS NONROUTINE OF ANALYSIS DETECTION MEAN (F)

NAME MEAN (F)

MEAN (F)

REPORTED PERfjREED (LLD) a RANGEb DISTANCF A Nt) DIRECTION JAbGE pANGFb b

gyggggg3,7 GLMM3 (NAI) 78 CS-137 10.000 12.094 14/ SI)

JONES FARM 12.378 12/ 268 27 VALUES <LLD 10.20-16.70 1.25 MILES w 10.20-16.70 K-40 150.000 1243.691 51/ 51)

LOVELL FARM 1306.52t 12/ 12) 1269.08f 27/ 273 1034.30- 1541.90 2.75 MILES NNE 1165.00- 1541.90 1052.10- 1467.60 IODINE IN MILK 0 500 45 VALUES <LLD 27 VALUES <LLD 72 ANALYSIS PERFORMED CIMMA (GELII 3

CS-137 5 000 13.351 1/

31 JONES FARM 13.358 1/

23 13.35-13.35 1.25 MILES W 13.35-13.35 M-40 NOT ESTA0 1400.678 3/

3)

JONES FARM 1422.50t 2/

21 1225.00- 1620.00 1.25 MILES w 1225.00- 1620.00 BI-214 NOT ESTAB 33.101 2/

3)

LOVELL FARM 36.531 1/

11 29.67-36.53 2.75 MILES NNE 36.53-36.53 i

PB-214 NOT ESTAB 20.52(

2/

3)

LOVELL FARM 20.631 1/

ll 20.41-20.63 2.75 MILES NNE 20.63-20.63 P!-212 NOT ESTAB 10.598 2/

31 JONES FARM 10.59t 2/

2) 9.98-11.20 1.25 MILES W 9.98-11.20 SR 89 10.000 44 VALUES <LLD 27 VALUES <LLD 71 ANALYSIS PERFORMED SE 90 2 000 12.56t 44/ 44)

JONES FARM 22.998 18/ 181 4.45t 27/ 27) 71 3.19-32.56 1.25 MILES W 4.06-32.56 2.69-8.32 a.

Nominal Lower Limit of Detection (LLD) as described in Table 3.

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TABLE 12 RADI0 ACTIVITY IN VEGETATION b$

PCI/G - 0.037 P0/G (DAY bEIGMT)

NAME OF FACILITY SEQUOYAH DOCKET NO. RH-80-7-SQ2 LOCATION OF FACILITY HA"ILTON TENNESSEE REPORTING PERIOD 1979 TYPE AND LOWER LIMIT ALL CONTROL NUM9ER OF TOTAL NUMBER OF INDICATOR LOCATIONS LocATYoh w1TM MIGMFST ANNuat MFAN LOCATIONS NONROUTINE

(

OF ANALYSIS DETECTION MEAN (

NAME MEAN (F)

RANGE {l RANGF()

MEAN (

REPORTED PFRESRMED ti t n) a DISTANfr AND ntRECTION RahGF MEASUREMENI5_?

GHOSS ALPHA 0.050 0.43t 11/ Ill JONES FARM 0.794 3/

39 0.47(

8/

91

(

20 0.12-1.59 1.25 MILES =

0.15-1.59 0.05-1.09 GROSS BETA 0 200 40.62(

11/ 11)

MALONE FARM 43.204 4/

45 42.04(

9/

93 20 17.30-65.74 3.5 MILES NNE 32.38-56.09 15.36-62.76 f

CiMMA (GELII 20 CE-144 0 220 0.35(

1/ 113 MALONE FARM 0.354 1/

41 9 VALUES <LLD i

0.35-0.35 3.5 MILES NNE 0.35-0.35 CS-137 0.060 0.12(

2/ Ill MALONE FARM 0.18(

1/

48 0.10(

1/

9) 0.07-0 18 3.5 MILES NNE 0.18-0 18 0.10-0.10 i

K-40 NOT ESTAB 22.96(

11/ 113 LOVELL FARM 23.76(

4/

el 24.818 9/

98 14.36-39 18 2.75 MILES NNE 17.00-39 18 6.42-36.11 C1-214 0 100 0.39(

7/ 11)

JONES FARM 0.514 3/

31 0.42(

8/

99 1

0.13-0.92 1.25 MILES W 0.19-0.92 0.12-0.89 PI-214 NOT ESTAB 0.28(

7/ Ill JONES FARM 0.39(

3/

33 0.28(

8/

91 0.11-0.67 1.25 MILES W 0.14-0.67 0.12-0.50 PB-212 NOT ESTA8 0.15(

8/ 111 JONES FARM 0.27(

3/

31 0.16f 8/

93 0.05-0.36 1.25 MILES w 0.16-0.36 0.02-0.31 HE-7 NOT ESTA8 6.754 11/ 11)

LOVELL FARM 8.71t 4/

43 6.88(

9/

31 2.33-11.78 2.75 MILES NNE 6.09-11 78 1.98-15.31 TL-2S3 NOT ESTA8 0.10(

3/ 113 JONES FARM 0.12(

2/

38 0.12(

1/

93 0.03-0.21 1.25 MILES W 0.03-0.21 0.12-0.12 i

AC-228 NOT ESTAB 0.44(

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1/

38 0.54(

1/

98 0.36-0.52 1.25 MILES u 0.52-0.52 0.54-0.54 SR C9 0.250 11 VALUES <LLD 9 VALUES <LLD 20 ANALYSIS PERFORMED SR 90 0.050 0.29(

11/ 11)

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3/

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(

a.

Nominal Lower Limit of Detection (LLD) art described in Table 3.

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

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TAHLE le RADICACTIVITY IN wELL WATER PCI/L - 0.037 PQ/L NA*E CF FACILITY _SEQuoVAH DOCKET No. RM-80-7-SQ2 LOCATION OF FACILITY HAMILTON TENNESSEE REPORTING PERIOD.1979 TYPE AND LOWER LIMIT ALL CONTROL NUm8FR OF TOTAL NJ"BER OF INDICATOR LOCATIONS LOCAT10N wfTH MfGMFST ANgMAt NFAN LOCATIONS NON#0UTINE OF CNALYSIS DETECTION MEAN (

NAME RANGE {l RahGE[3 MEAN (

MEAN (Ft REPopTED b

__EE EDPMED n t nia DISTANCE ANG DlHECTION DANGE M[ASM#EMENTS ?

GROSS RETA 2 400 2.684 2/ 25)

SGN WELL #6 2.e84 2/ 12) 3.468 10/ 133

(

38 2.49-2.86 ONSITE NNE 2.49-2.86 2.41-5.00 GIMMA (NAll 37 24 VALUES <LLD 13 VALUES <LLD ANALYSIS PERFORMED GAMMA (GELII 2

e n-40 NOT ESTAR 178.70(

1/

23 MAYS FANw 178.70f 1/

13 178.70-178.70 0.75 MILES w 178.70-178.70 THITIuu 330.000 8 VALUES <LLD 4 VALUES <LLD 12 ANALYSIS PERFORMED a.

Nominal Lower Limit of Detection (1.LD) as described in Table 3.

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

s k

t t

t t

t t

(

s

i e

TABLE 15 RA010ACTI'JITY IN PUBLIC WATER SUPPLY PCI/L - 0.037 BQ/L NAME CF FACILITY _jEQUOYAH 00CnET NO. RM-80-7-so2 LOCATION OF FeCILITY HAMILTON TENNESSEE REPORTING PERIOD 1979 i

TYPE AND LOWER LIMIT ALL CONTROL NUMBER OF TOTfL NUMBER OF INDICATOR LOCATIONS LOCAff0N mffM HIGNEST ANNUAL uEAN LOCATIONS NONROUTINE OF ANALYSIS DETECTION MEAN (

NAME MEAN (F)

MEAN (F)

REPORTED RANGE ()

PEREggg[p ntnl a Of5TANCF AND DIRECTION QANGEb b

ogggg urasuREMENTS_;

GRLSS BETA 2.400 3.518 18/ 518 CF INDUSTRIES 4.00t 11/ 131 3.858 7/ 26) 77 2.42-6.84 TAM 473.0 2.42-6.84 2.48-5.95 CCMMA (NAll 70 46 VALUES <LLD 24 VALUES <LLD l

ANALYSIS PERFORMED CIMMA (GELII 7

5 n-40 NOT ESTA8 70.688 1/

El CHICnAMAUGA DAM 70.688 1/

28 2 VALUES <LLD 70.68-70.68 TRM 465 3 70.68-70.69 CI-214 NOT ESTAB 9.59E 3/

58 CF INDUSTRIES 10.968 1/

23 2 VALUES <LLD f

7.28-10.96 TRM 473.0 10.96-10.96 P8-212 NOT ESTA8 2 078 1/

5)

DAISY, TN 2.078 1/

Il 6.548 2/

23 2.07-2.07 5.5 MILES W 2.07-2.07 S.68-7.40 4

SH E9 10 000 16 VALUES <LLD 8 VALUES <LLD 24 ANALYSIS PERFORMED SR 90 2 000 16 VALUES <LLD 8 VALUES <LLD t

24 ANALYSIS PERFORMED TRITIUM 330.000 542 60s 5/ 16)

E.I. DUPONT 762.008 1/

el 8 VALUES <LLD 24 365.00-762.00 TRM 470.5 762.00-762.00

(

a.

Nominal Lower Limit of Detection (LLD) as described in Table 3.

(

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

i

\\

k l

(8 i

(

j 30 Table 16 ENVIRONMENTAL GAMMA RADIATION LEVELS Environmental Gamma Radiation Levels Quarter Location pR/ Hour mR/ Quarter November 1978 -

On-Site (8)*

January 1979 Maximum 11.0 24.1 Minimum 9.7 21.2 Average **

10.3 1 0.9 22.6 1 2.0 Off-Site (10)

Maximum 10.8 23.6 Minimum 6.8 15.0 Average 8.5 1 2.5 18.7 1 5.4 February-May 1979 On-Site (8)

Maximum 10.1 22.2 Minimum 7.6 16.6 Average 8.9 1 1.8 19.5 1 4.0 Off-Site (10)

Max *. mum 9.0 19.6 Minimum 6.8 14.8 Average 8.0 1 1.3 17.4 1 2.8 June-July 1979 On-Site (7)

Maximum 8.6 18.8 Minimum 6.8 15.0 Average 7.9 + 1.5 17.3 + 3.2 Off-Site (10)

Maximum 7.8 17.0 Minimum 5.4 11.8 Average 6.4 1 1.4 13.9 1 3.0 August-October 1979 On-Site (8)

Maximum 10.4 22.7 Minimum 5.2 11.3 Ave rage 9.3 1 3.6 20.4 1 7.8 Off-Site (10)

Maximum 8.2 17.9 Minimum 5.8 12.6 Average 6.9 1 1.5 15.2 1 3.2

  • Number of stations (normally three TLD's at each station)
    • All. averages reported 120 r

{

r-

=

m-

e a

o e

o e

i T ABLE 17

+

RADIOACTIVITY IN FOOD CROPS PCI/KG - 0.037 BQ/KG (NET WEIGHT)

NAME OF FACILITY _SEQUOYAH DOCKET NO. RH-80-7-502 LOCATION OF FACILITY h4WILTON TENNESSEE RERORTING PEkIOD 1979 TYPE AND LOWER LIMIT ALL CONTROL NUMBER OF TOTAL NUM8ER OF INDICATOR LOCATIONS LOCATION wfTH HIGMFST ANNUAt NFAN LOCATIONS NONROUTINE OF ANALYSIS DETECTIch MEAN (F)

NAME MEAh (

MEAN (F)

REPoltTED RahGE{}

D PERFo g a t i_ n )

  • RANGE DISTANCF AND DIRFCTION RANGF MEASUREMFNTS f RADIOACTIVITY IN CORN 650SS SETA 25.000 4175.06(

1/

1)

JONES FARM 4175.06(

1/

1) 1 4175.06-4175.06 1 25 MILES w 4175.06-4175.06 GCMMA (GELI)

I i

K-00 NOT ESTAG 1685.00t 1/

13 JONES FARM 16 8 5. a.0 (

1/

Il 1685.00- 1685.00 1.25 MILES w 1685.00- 1685.00 TL-208 NOT ESTA8 5.41(

1/

13 JONES FARM 5.41t 1/

13 5.41-5.41 1.25 MILES W 5.41-5.41 RADIDACTIVITY IN GREEh BEANS GRESS BETA 25.000 6393.81(

1/

1)

JONES FARM 6393.81(

1/

13 4536.39(

1/

1) 2 6393.81-6393.81 1.25 MILES w 6393.81-6393.81 4536.39-4536.39 GAMMA (GELI) 2 K-00 NOT ESTA8 2327.00(

1/

1)

JONES FARM 2327.00(

1/

13 2344.00(

1/

13 2327.00- 2327.00 1.25 MILES W 2327.00- 2327.00 2344.00- 2344.00 P8-212 NOT ESTAB 1 VALUES <LLD 5.76(

1/

1) 5.76-5.76 4

a.

Nominal Lower Limit of Detection (LLD) as described in Table 3.

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

(

(

(

d(

(

T ABLE 17 (Conto)

RADICACTIVITY IN FOOD CROPS bb PCI/KG - 0.037 OQ/KG (WET WEI6MT)

NAME OF FACILITY SEQUOYAH DOCKET No. RH-80-7-SQ2 LOCATION OF FACILITY HAMILTON TENhESSEE REPORTING PERIOD 1979 TYPE AND LOWER LIMIT ALL CONTROL NUMBER OF 10TAL NUMBER OF INDICATOR LOCATIONS LOCAT10N hfTH HIGHEST ANNUAt MFAN LOCATIONS NONROUTINE OF ANALYSIS DETECTION MEAN IF)

NAME MEAN (F)

MEAN (F)

REPORTED PEREDEBEQ (LLD) a Raucgb DISTakCF AND DIRECTIQN RANGE b RANGE BEASUREmENTS_9 RADIDACTIVITY IN T0wATCES GRLSS 8 ETA 25.000 4606.08(

1/

11 JONES FARM 4606.08(

1/

Il 5814.02(

1/

Il 2

4606.08-4606.08 1.25 MILES W 4606.08-4606.08 5814.02-5814.02 CLMMA (GELII 2

K-40 NOT ESTAB 2821.00(

1/

II JONES FAHM 2821.00(

1/

Il 2994.00(

1/

II 2821 00- 2821.00 1.25 MILES W 2821.00- 2821.00 2906.00- 2904.00 FB-212 NOT ESTAB 5.63(

1/

18 JONES FARM 5.63(

1/

Il 1 VALUES <LLO 5.63-5.63 1.25 MILES W 5.63-5.63 RADI0 ACTIVITY IN TURNIP 6REENS GRSSS' BETA 25.000 3718.92(

1/

18 JONES FARM 3718.926 1/

11 9413.37(

1/

Il 2

3718.92-3718 92 1.25 MILES W 3718.92-3718.92 9413.37-9413.37 EAMMA (GELII 2

CS-137 5.000 15.69(

1/

II JONES FARM 15.69(

1/

13 1 VALUES <LLD 15.69-15.69 1.25 MILES W 15.69-15.69 K-40 NOT ESTA8 1781 00(

1/

13 JONES FARM 1701.00(

1/

Il 2178.00(

1/

13 1701.00- 1701.00 1.25 MILES W 1701.00- 1701.00 2178.00- 2178.00 BI-214 NOT EST49 18.18(

1/

13 JONES FARM 18.18f 1/

11 1 VALUES <LLD 18.18-18.18 1.25 MILES W 18.10-18.19 PB-214 NOT ESTAe 1 VALUES <LLD 7.41(

1/

Il 7.41-7.41 PB-212

, NOT ESTAB 18.02(

1/

13 JONES FARM 18.02(

1/

19 1 VALUES <LLD 18.02-18.02 1.25 MILES W 18.02-18.02 UE-7 NOT ESTAB 138.506 1/

19 JONES FARM 138.50(

1/

11 1 VALUES <LLD 138.50-138.50 1.25 MILES W 138.50-138.50 a.

Nominal la.r. Limit of Detection (LLD) as described in Table 3.

b.

Mean and range based upon detectable measurements only. Traction of detectable measurements of specified locations is indicated in parenthesis (I).

t t

a 4

i e

e e

T ABLE 18 RADI0 ACTIVITY IN POULTRY PCI/MG - 0.037 90/MG (MET hEIGHTl NA*E OF FACILITY SEQUOYAH DOCKET No. RN-80-7-SQ2 LOCATION OF FACILITY HAMILTON TENNESSEE REPORTING DERIOD 1979 TYPE AND LOWER LIMIT ALL CONTROL NUMBER OF TOTfL NUMBER OF INDICATOR LOCATIONS LOCAff0N wfTH NfGMEST ANNUAL MFAN LOCATIONS NONROUTINE 0F ANALYSIS DETECTION PEAN (

NAME MEAN (F)

MEAN (F)

REPORTED RANGF{l a

b DISTANCF AND DIRECTION RANGE pANGEb PFRfjM (LLnt MEASUREMENTS :

G2MMA (GELII 2

K-40 NOT ESTAR 7.30(

1/

18 JONES FARM 7.30(

1/

11 1 VALUES <LLD 7.30-7.30 1 25 MILES W 7.30-7.30 81-214 NOT ESTae 0.05(

1/

In JONES FARM 0.0St 1/

13 1 VALUES <LLO 0.05-0.05 1.25 MILES e 0.n5-0.05 P8-214 NOT ESTAR 0.064 1/

II JONES FARM 0.064 1/

11 1 VALUES <LLD I

0.06-0.06 1.25 MILES w 0.06-0.06 P8-212 NOT ESTAB 0.03(

1/

In JONES FARM 0.03(

1/

13 1 VALUES <LLO 0.03-0.03 1.25 MILES w 0.03-0.03 O.03-0.03 1.25 MILES W 0.03-0.03 a.

Nominal Lower Limit of Detection (LLD) as described in Table 3.

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

t

(

(

a

\\

(

(

(

t

(

35 i

Reservoir Monitoring I

Samples are collected from the Tennessee River as detailed in Table 19.

Samples collected for radiological analysis include water, plankton, and Asiatic clams from three of these cross sections, sediment from four cross sections, and fish from three contiguous reservoirs. The locations of these cross sections are shown on the accompanying map (figure 5) and 1

conform to sediment ranges established and surveyed by the Data Services Branch, TVA.

Water Water samples are collected automatically by sequential type sampling devices at three cross sections and composite samples analyzed monthly for gross alpha and beta activity and gamma-emitting radionuclides.

Further composites are made quarterly for strontium and tritium analyses.

Sampling locations are shown in Table 19.

During this reporting period, three samples were not collected because of the malfunction of automatic sampling equipment. Results are displayed in Table 20 and indicate the

+

maximum beta concentration with reference to Table 5 is 0.34 percent MPC.

Fish Radiological monitoring for fish was accomplished by analyses of i

composite samples of adult fish taken semiannually from each of three contiguous reservoirs--Watts Bar, Chickamauga, and Nickajack. No permanent sampling stations have been established within each reservoir; this reflects the movement of fish species within reservoirs as determined by TVA data from the Browns Ferry Nuclear Plant preoperational monitoring program.

Three species, white crappie, channel catfish, and smallmouth buffalo, are collected representing both commercial and game species.

Sufficient fish are collected in each reservoir to yield 250 or 300 grams oven-dry weight for analytical purposes. All samples were analyzed for gamma, gross alpha, 89 90 gross beta Sr, and Sr activity. The composite samples contained approximately the same quantity of flesh from each fish.

For each composite a subsample of material was drawn for counting. Results are given in Tables 21, 22, 23, and 24.

Plankton As indicated in Table 19, net plankton was collected for radio-logical analyses at three stations by vertical tows with a one-half meter, 100 micro-mesh net.

For analytical accuracy, at least 50 grams (wet weight) r of material is required; and collection of such amounts is usually practical only during the period April to September because of seasonal variability

36 in plankton abund Ice.

Samples were analyzed for gross beta activity.

Sample quantities were not sufficient for the analysis of specific gamma-emitting radionuclides, 89Sr and 80Sr, and three samples yielded insuf ficient quantities for gross beta analyses.

Sample results are given in Table 25.

Sediment Sediment samples were collected from dredge hauls made for bottom 89Sr and 80Sr fauna. Gamma, gross alpha, and gross beta activity and content were determined in samples collected from points in four cross sections.

Each sample was a composite obtained by combining equal volumes of sediment from each of three dredge hauls at a point in the cross section.

Results are given in Table 26.

Asiatic Clams Samples of Asiatic clams were collected with a Ponar dredge from three stations and analyzed for gamma, gross alpha, and gross beta activity.

The 89Sr and 90Sr content was determined in the shells. Results are given in Tables 27 and 28.

6 e

a Y

~ > -, -

e

e e

Table 19 SAMPLING SCHEDULE - RESERVOIR MONITORING Biological Samples Zooplankton, Tennessee River Chlorophyll, Benthic (Mile)

Phytoplankton*

Fauna

  • Sediment
  • Fish **

Water Samples 472.8 2

473.2 Automatic sampler ***

480.8 2

1 2

483.4 2

1 2

Automatic sampler ***

483.6 Grab sample 496.5 2

1 2

497.0 Automatic sampler ***

  • Replicate samples.
    • Fish samples are taken from Watts Bar, Chickamauga, and Nickajack Reservoirs.
      • Composite sample analyzed monthly.
        • Samples taken during one sampling period only.

d

Figure 5 i

R ESER VOIR MONITORING NETWORK j

SEQUOYAH NUCLE AR PL ANT j

DAYTON 1

I i

l l

MILE 497 MILE 496.5 i

i SODDY l

.l f

DAISY l

SEQUOYAH NUCLEAR PLANT MIL E 4 8 3.4 MILE 480Bi SHOW HILL CHICKAMAUGA DAM MIL E 4 73.2 I

MIL E 4 7 2.8 l

l I

CHATTANOOGA I

8.0 kilometers

')

0 5

MILES

a e

e e

(

T ABLE 20 t

RADIOACTIVITY IN SURFACE MATER TOTAL PCI/L - 0.037 80/L NAME OF FACILITY SEGUOYAH DOCKET No. RH-60-7-902 LOCATION OF FACILITY MAMILTON TENNESSEE REPORTING PERIOD 1979 I

TYPE AND LOWER LIMIT ALL CONTROL NUMBER OF TOTAL NUMBER OF INDICATOR LOCATIONS LOCATION WITH HIGMEST ANNUAt MEAN LOCATIONS NONROUTINE 0F ANALYSIS DETECTION MEAN (F)

NAME MEAN (F)

MEAN (F)

REPORTED PEREgRMED (LLni' RANGEb DISTANCF AND DIRECTION RANGFb pANGFb MEASUREMENTS

  • GROSS ALPHA 2 000 26 VALUES <LLD 3.60(

1/ 10) 36 3.60-3.60 GHOSS BETA 2 400 4.56(

16/ 26)

TRM 483 4 5.67(

9/ 131 5.38(

5/ 10) 36 2.46-10.26 2.47-10.26 2.60-9.22 8

GAMMA (NAI) 33 RN-222 NOT ESTAA 14.968 13/ 24)

TRM 473.2 17.31(

7/ 13) 18.65(

4/

9) 2.70-24.20 11.60-24.20 12.40-31.80 GAMMA (GELI) 3 R-40 NOT ESTAB 100.10(

1/

2)

TAM 483.4 100.10(

1/

2) 73.82(

1/

1) 100.10-100.10 100.10-100.10 73.82-73.82 81-214 NOT ESTAB 23.65(

2/

2)

TRM 483.4 23.65(

2/

2) 52 32(

1/

1) 12.41-34.88 12.41-34.88 52.32-52.32 PB-214 NOT ESTAB 23.634 1/

2)

TRM 483.4 23.63(

1/

2) 24.89(

1/

1) 23.63-23.63 23.63-23.63 24.89-24.89 t

P8-212 NOT CSTA8 15.04(

2/

2)

TRM 483.4 15.04(

2/

2) 12.44(

1/

1) 11.33-18.75 11.33-18.75 12.44-12.44 SR 89 10.000 8 VALUES <LLD 4 VALUES <LLD L

12 ANALYSIS PERFORMED Sk 90 2.000 8 VALUES <LLD 4 VALUES <LLD 12 ANALYSIS PERFORMED

(

THITIUM 330 000 475.33(

3/

8)

TRM 473 2 481.50(

2/

el 534.90(

1/

4) 12 454.00-509.00 454.00-509.00 534.00-534.00 t

a.

Nominal Lower Limit of Detection (LLD) as described in Table 3.

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

k

(

i k

t d

(

(

TABLE 21 RADIOACTIVITY IN CMANNEL CATFISM (FLESH)

PCI/G - 0 037 PQ/G (CRY bEIGMT)

NAME CF FACILITY SEQUOYAH DOCKET NO. RH-80-7-SQ2 LOCATION OF FACILITY HAMILTON TENNESSEE _

REPORTING PERIOD 1979 TYPE AND LOWER LIMIT ALL CONTROL NUMBER OF TOTAL NUMBER OF INDICATOR LOCATIONS LOCAff0N hffH MfGMFST ANNUAt MFAN LOCATIONS NONROUTINE OF ANALYSIS DETECTION MEAN IF)

NAME MEAN IF MEAN (FI REPORTED R AhGN )

PFFEDRg[g (LLet a RANGFb DISTANCF AND DIRECTION RANGF MEASUBFMENTS_f GwCSS ALPHA 0 100 4 VALUES <LLD 2 VALUES <LLD 6

ANALYSIS PERFORME0 GRLSS RETA 0 100 25.54t 4/

48 CHICKAMAUGA RES 30.30t 2/

23 28.684 2/

21 6

15.72-33.44 TRM 471-530 27.15-33.44 26.46-30.**

GAMMA (GELII 6

CS-137 0.020 0.09t 4/

4)

CHICKAMAUGA RES 0.131 2/

23 0.164 2/

2)

O.03-0.16 TRM 471-530 0.09-0.16 0.12-0.20 n-40 NOT ESTAB 15.33t 4/

43 CHICFAMAUGA RES 19.01t 2/

28 15.964 2/

23 9.68-22.01 TRM 471-530 16.00-22.01 12.87-19.04 8

CI-214 0.020 0.254 4/

el CHICKAMAue4 RES 0.30t 2/

2) 0.3St 2/

23 0.06-0.53 TRM 471-530 0.06-0.53 0.32-0.38 PB-214 NOT ESTAB 0 178 4/

43 CHICKAMAUGA RES 0 191 2/

23 0.164 1/

23 O.07-0.31 TRM 471-530 0.07-0.31 0.16-0.16 P;-212 NOT ESTAB 0.03t 1/

48 CHICKAMAUGA RES 0.034 1/

21 0.12(

1/

21 0.03-0.03 TAM 471-530 0.03-0.03 0.12-0.12

(

SR 89 0.500 4 VALUES <LLD 2 V4 LUES <LLD 6

ANALYSIS PERFORMED SR TO 0 100 4 VALUES <LLO 2 VALUES <LLD 6

ANALYSIS PERFORMED t

a.

Nominal Imer Limit of Detection (LLD) as described in Table 3.

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

t

(

(

L

(

(

(

.1

TABLE 22 RADIOACTIVITY IN WHITE CRAPPIE (FLESH)

PCI/G - 0.037 BQ/G (DRY WEIGrT)

NAME OF FACILITY SEQUOYAH DOCKET NO. RH-80-7-S02 LOCATION OF FACILITY HANILTOP TENNESSEE REPORTING PERIOD 1979 TYPE AND L0 DER LIMIT ALL CONTROL NUMBER OF TOTAL NUMBER OF INDICATOR LOCATIONS LOCATION WITH HIGHEST ANNUAL MFAN LOCATIONS NONROUTINE OF ANALYSIS DETECTION MEAN (F)

NAME MEAN (F)

MEAN (F)

REPORTED PFRF0EMED (LLDia RANGE I DISTANCF AND DIRFCTION MEASUREMENTS 1 GROSS ALPHA 0 100 4 VALUES.LLO

_ RANGED RANGFD 2 VALUES (LLO 6

ANALYSIS PERF0FMEO GHOSS BETA 0 100 33.81(

4/

4)

CHICKAMAUGA RES 39.6St 2/

23 34.671 2/

28 6

24.10-45.91 TRM 471-530 33 38-45.91 34.39-34.94 GAMMA (GELII 6

CS-137 0.020 0.12(

4/

4)

CHICKAMAUGA RES 0.15(

2/

23 0.2St 2/

2)

O.05-0.15 TRM 471-530 0.14-0 15 0.22-0.29 K-40 NOT ESTAB 17.59(

4/

41 CHICKAMAUGA RES 19.65(

2/

23 20.38(

2/

23 12.10-cu.a; TRM 471-530 18.41-20.89 19.81-20.94 i

BI-214 3.020 0.29(

2/

el CHICKAMAUGA RES 0.30(

1/

2) 0.39(

2/

23 0.28-0.30 TRM 471-530 0.30-0.30 0.38-0.43 P8-214 NOT ESTAB 0 10(

3/

41 NICKAJACK RES 0.13(

1/

23 0.29(

2/

23 0.01-0.16 TRM 425-471 0.13-0.13 0.25-0.32 PB-212 NOT ESTAB 0.05.

2r el NICKAJACK RES 0.06(

1/

23 0.17(

1/

al 0.04-0.06 TRM 425-471 0.36-0.06 0.17-0.17 SR C9 0.500 4 VALVES <LLO 0.69(

1/

23 6

0.69-0.69 54 90 0 100 4 VALUES <LLO 2 VALUES <LLO 6

ANALYSIS PERFORMED

(

a.

Nominal Lower Limit of Detection (LLD) as described in Table 3.

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

(

(

s k

f Y.- (

L

T ABLE 23 RADI0 ACTIVITY IN SMALLMOUTH RUFFALO (FLESH)

PCI/G - 0 037 BQ/G (ORY =EIGHT)

NAME OF FACILITY SEQUOYAH DOCKET NO. RH-80-7-SQ2 LOCATION OF FACILITY HAMILTON TENNESSEE REPORTING. PERIOD 1979 TYPE AND LOWER LIMIT ALL CONTROL NUMBER OF TOTAL NUMBER OF INDICATOR LOCATIONS LOCATION WITH HIGHEST A A NU AL MFAN LOCATIONS NONROUTINE OF ANALYSIS DETECTICA MEAN (

NAME MEAN (F)

MEAN (F)

REPORTED RANGE {}

PERF0PMFD titfila b

DISTANCF AND DIRECTION J hGE RANG @

gggEPREJ GROSS ALPHA 0 100 4 VALUES <LLO 2 VALUES <LLD 6

ANALYSIS PERFORMED GRESS BETA 0 100 24.80(

4/

4)

CHICKAMAUGA RES 30.58(

2/

2) 27.91(

2/

23 6

12.86-34.06 TRM 4TI-530 27.90-34.06 26.10-29.72 1AMMA (GELI) 6 CS-137 0.020 0.03(

1/

4)

NICKAJACK RES 0.03(

1/

23 0.12(

2/

2)

O.03-0.03 TRM 425-471 0.03-0.03 0.11-0.13 K-60 NOT ESTAR 12.57(

4/

4)

CHICKAMAUGA RES 15.80(

2/

2) 14.02(

2/

23 8.64-16.37 TRM 471-530 15.23-16.37 12.19-15.84 Hi-214 0.020 0.29(

3/

4)

NICKAJACK RES 0 38(

1/

2) 0.19(

2/

21 0.23-0.38 TRM 425-471 0.38-0.38 0.12-0.26 P8-214 NOT ESTAB 0.13(

3/

4)

NICKAJACK RES 0.17(

1/

2) 0.17(

1/

2) 0.07-0.17 TRM 425-471 0.17-0.17 0.17-0.17 PB-212 NOT ESTAB 0.11(

3/

4)

NICKAJACK RES 0.23(

1/

2) 0.07(

1/

2) 0.02-0.23 TRM 425-471 0.23-0.23 0.07-0.07 TL-208 0.020 0.07(

1/

4)

NICKAJACK RES 0.07(

1/

2) 2 YALUES <LLO 0.07-0.07 TRM 425-471 0.07-0.07 SR C9 0.500 4 VALUES <LLD 2 VALUES <LLO 6

ANALYSIS PERFORMED SR 90 0 100 4 VALUES <LLD 2 VALUES <LLD 6

ANALYSIS PERFORMED t

t a.

Nominal Lower I.f mit of Detection (LLD) as described in Table 3.

b.

Mew and range based upon detectable measurements only. Fraction of detectat le measurements of specified locations is indicated in parenthesis (F).

(

t

(

i i

(

d

s e

e 3

e l

TABLE 24 NAD10 ACTIVITY IN SMALLMOUTH BUFFALO (WHOLE)

PCI/G - 0 037 80/G (ORf WEIGHT)

NAME OF FACILITY SEQUOYAH 00CKET No. RH-80-7-502 LOCATION OF FACILITY HAMILTON TENNESSEE REPORTING PERICD 1979 TYPE AND loser LIMIT ALL CONTROL NUMBER OF TOTAL NUMBER OF INDICATOR LOCATIONS LOCATION WITH HIGHFST ANNUAL NFAN LOCATIONS NONROUTINE 0F INALYSIS DETECTION MEAN (F) hAME MEAN (F)

MEAN (F)

REPORTED PEREggggg

_ _ (LLnla BANGEb DISTANrF AND DIRECJJON RANGEb RANGEb MEASMBEMENTS_f GROSS ALPHA 0 100 0.13t 2/

4)

CHICKAMAUGA RES 0 14(

1/

23 2 V4 LUES <LLD 6

0.11-0.14 TRM 471-530 0.14-0.14 GROSS BETA 0 100 20 101 4/

4)

CHICKAMAUGA RES 21.52(

2/

2) 19.04(

2/

21 6

17.94-22.83 TRM 471-530 20.21-22.83 14.66-23.42 i

CiMMA (GELI) 6 CS-137 0.020 0.05(

4/

4)

CHICKAMAUGA RES 0.06(

2/

2) 0.044 1/

2)

(

0.04-0.06 TRM 471-530 0.06-0.06 0.04-0.04 K-40 NOT ESTAB e.51(

4/

4)

CHICKAMAUGA RES 8.93(

2/

21 8.30(

2/

23 6.78-9.42 TRM 471-530 8.44-9.42 6.23-10.37 BI-214 0.020 0 19(

4/

4)

NICKAJACK RES 0.20(

2/

2) 0.16(

2/

2) 0.07-0.26 TRM 425-471 0.15-0.26 0.05-0.28 PB-214 NOT ESTA8 0.12(

4)

NICKAJACK RES 0.14(

2/

2) 0.11(

2/

23 0.05-0.19 TAM 425-471 0.10-0.19 0.08-0.15 PB-212 NOT ESTA8 0.05(

2/

4)

NICKAJACK RES 0.074 1/

23 0.02(

1/

2) 0.04-0.07 TRM 425-471 0.07-0.07 0.02-0.02 TL-208 0.020 0.03t 2/

4)

NICKAJACK RES 0.03(

2/

21 2 VALUES <tLD 0.02-0.03 TRM 425-471 0.02-0.03 SR 89 0.500 1 18(

2/

4)

CHICKAMAUGA RES 1 18(

2/

2) 2 VALUES <LLO l

6 0.85-1.50 TRM 471-530 0.25-1.50 SR CO 0.100 0.18(

4/

4)

NICKAJACK RES 0.26(

2/

2) 0.24(

2/

23 6

0.11-0.40 TRM 425-471 0.11-0.40 0.14-0.33 a.

Nominal Lower Limit of Detection (LLD) as described in Table 3.

t b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

t t

(

TABLE 25 i

RADI0 ACTIVITY IN PLANNTON PCI/G - 0.037 BQ/G (DRY WEIGHT)

NAME OF FACILITY SEQUOYAH DOCKET NO. PH-80-7-SQ2 LOCATION OF FACILITY HAMILTON TENhESSEE REPORTING PERIOD 1979 TYPE AND LOWER LIMIT ALL CONTROL NUMBER OF TOTAL NUMBER OF INDICATOR LOCATIONS LOCaff0N WITH HIGHFST ANNUAL ktAN LOCATIONS NONR00 TINE OF LNALYSIS DETECTION MEAN (F)

NAME MEAN (Fl NEAN (F)

REPORTED PERFCEj$[Q (I L fila RANGEb Q15]jNCF AND DIRECJJON RANGEb RANGEb MEASUREMENTS _f GROSS BETA 0 100 28.62(

7/

73 THM 483 4 32.12(

3/

3) _

50.03t 2/

2) 9 9.40-69.77 14.55-58.55 49.96-50.09 a.

Nominal Lower Limit of Detection (LLD) as described in Table 3.

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

i a

4 f

(

e 1

4 t

e e

s

(

I e

a w

e l

l I

TABLE 26

(

RADICACTIVITY IN SECIMENT PCI/G - 0.037 OG/G (ORY WEIGHT) i NAME OF FACILITY SEQUOYAH 00CKET NO. 4H-80-7-SQ2 LOCATION OF FACILITV HAMILTON TENNESSEE REPORTING PERIOD 1979

(

TYPE AND LUwER LIMIT ALL CONTROL NUMBER OF total NUMBER OF INDICATOR LOCATIONS LOCaff0N wfTH HIGMEST AhNUAL MFAN LOCATIONS NONROUTINE f

0F ANALYSIS DETECTION MEAN (

NAME RANGE {}

RANGE {}

RANG-[3 MEAN (

MEAN REPORTED

__ peg [ppgEQ

__ (LLOla DISTANCF AND DIRECTION MEASugEMENIS_1 GROSS ALPMA 0.350 11 92( 12/ 12)

TRM 480.82 14.P2(

4/

4) 11.15(

4/

4)

I 16 6.93-16.79 13.36-16.79 8.60-13.95 CROSS BETA 0.700 52.898 12/ 12)

TRM 480 82 60.27(

4/

41 44.881 4/

4) 16 31.30-63.82 54.74-63.82 36.08-55.28 GAMMA (GELI) 16 CE-144 0.060 0.15(

1/ 12)

TRM 472 80 0.15f 1/

  • )

0.40(

1/

4)

O.15-0.15 0.15-0.15 0.40-0.40 CO-60 0.010 0.22(

9/ 12)

TRM 480.82 0.26(

4/

41 0.16(

4/

43 0.07-0.33 0.20-0.33 0.13-0.21

(

CS-137 0.020 2.65(

12/ 12)

TRM 472 80 4.16(

4/

4) 1.65(

4/

41 0.18-6.37 1.08-6.37 1.17-2.31 n-40 NOT ESTAB 16.05(

12/ 12)

TRM 480.82 18.13(

4/

4) 13.94(

4/

4) 10.40-21.39 16.58-21.39 11.22-15.91 BI-214 0.020 1.32(

12/ 12)

TRM 480 82 1.48(

4/

41 0.97(

4/

41 0.66-1.71 1.28-1.71 0.77-1.20

(

BI-212 0 100 1 05( 12/ 12)

TRM 480.82 1.09(

4/

4) 0.80(

4/

41 0.54-1.29 0.93-1.29 0.51-1.14 90-214 NOT ESTA8 1.38(

12/ 12)

TRM 480.82 1.57(

4/

4) 0.99(

4/

4) i 0.66-1.83 1.32-1.83 0.77-1.21 PB-212 NOT ESTAB 1.67(

12/ 12)

TAM 480.82 1.86(

4/

4) 1.17(

4/

41 0.81-2.21 1.66-2.21 0.95-1.55

(

RA-226 NOT ESTAB 1.32(

11/ 12)

TRM 480.82 1.48(

4/

43 0.97(

4/

43 0.66-1.71 1.28-1.71 0.77-1.20 kA-223 NOT ESTA8 0.40(

3/ 12)

TRM 483.4 0.58(

1/

41 4 VALUES <LLD t

0.23-0.58 0.58-0.58 sE-7 NOT ESTA8 12 ' ALUES <LLD 0.94(

1/

41 0.94-0.94

(

TL-208 0 020

0. ;1t 12/ 12)

TRM 480.82 0.60(

4/

el 0.41t 4/

4) 0.27-0.75 0.51-0.70 0.33-0.50 AC-228 0.060 1.71t 12/ 12)

TRM 480.82 1.88(

4/

4) 1.26(

4/

4) t 0.82-2.32 1.58-2.32 1.00-1.70 PA-228 NOT ESTAB 0.07(

1/ 12)

THM 483.4 0.07(

1/

41 4 VALUES <LLD 0.07-0.07 0.07-0.07 i

SR 89 1 500 12 VALUES <LLD 4 VALUES <LLD 16 ANALYSIS PERFORMED SH CD 0.300 0.45(

2/ 12)

TAM 472.80 0.45(

2/

41 4 VALUES (LLD

(

16 0.37-0.52 0.37-0.52 a.

N:cinal Lower Limit of Detection O.LD) as described in Table 3.

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

g(

(

1 TABLE 27 RADI0 ACTIVITY IN CLAM FLESH

$5 PCI/G - 0.037 80/G (CRY WEIGHT)

NAME CF FACILITY SEQUOYtH 00CKET NO. RH-80-7-SQ2 LOCATION OF FACILITY HAMILTON TENNESSEE RERORTING PERIOD 1979 TYPE AND loner LIMIT ALL CONTROL NUMBER OF TOTAL NUM8ER OF INDICATOR LOCATIONS LOCATION wtTH HIGHFST AANUAt WFAN LOCATIONS NONROUTINE OF ANALYSIS DETECTION MEAN f NAME RANGE ()

RANGE {l MEAN (

MEAN ([I REPORTED PEREDRMEQ (LLnla DISTANCE AND DIRFCTION RANGF MEASUREMENTS h GHOSS ALPHA 0 100 0.73(

8/

81 TRM 480 62 0.e i 4/

43 0.77(

4/

4) 12 0.29-1 24 0.6*-

1.24 0.63-0.95 GHOSS BETA 0 100 6.63t 8/

81 TRM 480.82 6.95(

4/

4) 8.41(

4/

4) 12 0.15-11 93 0.15-11.93 3.79-11.75 GIMMA (GELI) 12 A-40 NOT ESTAB 7.33(

S/

8)

TRM 483 4 7.76(

2/

4) 10.9't 3/

4) 5.20-9.42 6 10-9.42 9.~7-12.61 61-214 NOT ESTAB 0.83t 6/

al TRM 483.4 0.91t 3/

4) 4.09(

2/

41 0.43-1.38 0.43-1.38 2.05-2.14 PB-214 NOT ESTA8 0.98(

4/

8)

TRM 483.4 1.04(

2/

4) 1.23(

4/

43 0.58-1.51 0.58-1.51 0.47-2.35 PB-212 NOT ESTA8 0.43(

6/

8)

TRM 483.4 0.45(

2/

43 0.98(

2/

41 0.23-0.58 0.32-0.58 0.70-1.25 TL-208 NOT ESTA8 0.14f 1/

8)

TRM 480.82 0 14(

1/

43 0.41t 2/

41 0.14-0.14 0.14-0.14 0.32-0.50 AC-228 NOT ESTAB 1 02(

1/

8)

TRM 480 82 1.02(

1/

41 4 VALUES <LLD 1.02-1 02 1.02-1.02 t

a.

Nominal Lower Limit of Detection (LLD) as described in Table 3.

b.

Mean and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

r i

t k

(

k

l

.~

o i

l i

TABLE 28 RADICACTIVITY IN CLAW SHELL PC1/6 - 0.037 90/G (CRY mEIGHT)

NAMF OF FACILITY SEGUOYAH DOCKET NO. NH-80-7-502 LOCATION OF FACILITY HAMILTON TENNESSEE REPORTING PERIOD 1979 8

TYPE AND LouER LIMIT ALL CONTROL NUM8ER OF TOTAL NUMBER OF INDICATOR LOCATIONS Locaff0N mfTH HIGHFST ANNUAt MEAN LOCATIONS NONROUTINE 0F ANALYSIS DETECTION MEAN (F)

NAME MEAN IF)

MEAN (F)

REPORTED

__fEDEDRMFD tttnia RANGEb DISTANcF AND DIRFCTION RANGrb RANGFb MFASUPEMENTS.*

GHOSS ALPHA 0.700 1.85(

3/

81 TRM 480 82 1.e51 3/

4) 1.30(

3/

4) 12 0.90-2.86 0.90-2.86 0.94-1.93 CROSS 8 ETA 0.700 7.15(

8/

8)

TRM 480.82 8.14(

4/

41 7.50(

4/

4) 12 4.95-9.07 7.17-9.07 5.76-8.41 GAMMA (GELI) 12 CO-60 0.010 8 VALUES <LLD 0.02(

1/

4)

O.02-0.02 CS-137 0.020 0.04(

3/

8)

TRM 480.82 0.04(

3/

43 0.03(

2/

41 0.03-0.05 0.03-0.05 0.03-0.03 I

n-40 0 250 0.51(

5/

8)

TRM 480 82 0.54(

4/

41 0.42(

3/

41 0.36-0.72 0.36-0.72 0.30-0.48 81-214 0.050 0 171 8/

8)

TRM 480.82 0.18(

4/

43 0.151 4/

4)

O.06-0.33 0.06-0.30 0.11-0.18 PO-214 0.050 0.14(

8/

8)

TRM 480.82 0.17(

4/

43 0 14(

4/

41 0.06-0.25 0.06-0.25 0.11-0.18 PB-212 NOT ESTAB 0.10(

8/

88 TAM 480.82 0.13(

4/

41 0.13(

4/

4)

C.04-0.19 0.06-0.19 0.05-0.27 RA-226 0.050 0.15(

4/

8)

TRM 480.82 0.17(

2/

el 0.12(

2/

4)

(

0.10-0 19 0.15-0 19 0.11-0.12 TL-208 0.020 0.06(

6/

8)

TRM 480.82 0.06f 3/

43 0.04(

3/

4) 0.03-0.08 0.05-0.08 0.02-0.05

(

AC-228 0.060 0.171 6/

8)

TRM 480.82 0.20(

4/

41 0.20(

3/

41 0.00-0.29 0.10-0.29 0.14-0.27 SR 89 5.000 8 VALUES <LLD 4 VALUES <LLD t

12 ANALYSIS FERFORMED SR to 1.000 1.88(

8/

8)

TRM 480 82 1.94(

4/

4) 1 67(

4/

4) 12 1 48-2 19 1.65-2.12 1.19-2.09 I

a.

Nominal Lower Limit of Detection (LLD) as described in Table 3.

t b.

MeEn and range based upon detectable measurements only. Fraction of detectable measurements of specified locations is indicated in parenthesis (F).

(

(

(

(

49 Quality Control o

A quality control program has been established with the Tennessee Department of Public Health Radiological Laboratory and the Eastern Environmental Radiation Facility, Environmental Protection Agency, Montgomery, Alabama.

Samples of air, water, milk, fish, and soil collected around nuclear plants 7

are forwarded to these laboratories for analysis, and results are exchanged for comparison.

Conclusions Since Sequoyah Nuclear Plant has not achieved criticalit y, there has been no contribution of radioactivity from the plant to the environment.

The levels of radioactivity being reported in this document are due to natural background radiation, nuclear weapons testing, or other nuclear operations in the area.

k u

o G

O

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