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Environ Radioactivity Levels,Sequoyah Nuclear Plant Annual Rept - 1983
	ML20100H917
Person / Time
Site:	Sequoyah
Issue date:	12/31/1983
From:	; TENNESSEE VALLEY AUTHORITY
To:	;
References
	NUDOCS 8504100217
	Download: ML20100H917 (64)
	v • d • e

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CONTENTS Page . List of Tables. iii List of Figures iv Introduction 1 Atmospheric Monitoring. 11- - Terrestrial Monitoring. 25 Reservoir Monitoring 45 Quality Control 59 Data Analysis-59 Conclusions 59 j I l e 11-i -n, ,,~,,-~c , - ~~, - ~ - -- ~ - - - ~ - --~

e ~ 1 0 0 g List of Tables Page Table 1 - Environmental Radioactivity Sampling Schedule. 3 Table '2 - Atmospheric and Terrestrial Monitoring Station ) Locations - Sequoyah Nuclear! Plant 4 Table 3 - Detection Capabilities for Environmental Sample Analysis. 5 Table '4 - Results Obtained in Interlaboratory Comparison Program. 7 . Table 5 - Maximum Permissible Concentrations for Nonoccupational Exposure. . 13 Table 6 - Radioactivity in Air Filter. . 14 Table 7 - Radioactivi.ty in Rainwater.

. 15 Table 8 - Radioactivity in Heavy Particle Fallout.

. 16 Table 9 - Radioactivity in Charcoal Filters. 17 Table 10 - Radioactivity in Atmospheric Moisture. . 18 Table 11 - Radioactivity in Milk. . 28 Table 12 - Radioactivity in-Vegetation. Table 13 - Radioactivity in Soil................. 29 . 30 Table 14.- Radioactivity in Well Water._. . 31 Table 15 - Radioactivity in Public Water Supply. . 32 Table 16 - Environmental Gamma Radiation Levels. . 33 Table 17 - Radioactivity in Apples. . 34 Table 18 - Radioactivity in Cabbage . 35 Table 19 - Radioactivity in Corn.. . 36 Table 20 - Radioactivity in Green Beans . 37 Table 21 - Radioactivity in Potatoes . 38 Table 22 - Radioactivity in Tomatoes . 39 Table 23 - Radioactivity in Poultry. . 40 Table 24 - Radioactivity in Beef. . 41 Table 25 - Sampling Schedule - Reservoir Monitoring. . 47 Table 26 - Radioactivity in Surface Water, Total......... 48 Table 27 - Radioactivity in White Crappie (Flesh)......... 49 Table 28 - Radioactivity'in Channel Catfish (Flesh)... . 50 Table 29 - Radioactivity in Smallmouth Buffalo (Flesh)...... 51 Table 30 - Radioactivity in Smallmouth Buffalo (Whole)...... 52 Table 31 - Radioactivity in Sediment. . 53 Table 32 - Radioactivity in Shoreline Sediment . 54 Table 33 - Radioactivity in Clam Flesh.............. 55 Table 34 - Radioactivity in Clam Shell... . 56 iii

i l List of Figures Page Figure 1 - Tennessee Valley Region. 10 Figure 2 - Atmospheric and Terrestrial Monitoring Network..... 19 l Figure 3 - Local Monitoring Stat ions - S2quoyah Nuclear Plant. 20 Figure 4 - Sequoyah Nuclear Plant - Site Monitoring Stations. 21 1 Figure 5 - TLD Locations - Sequoyah Nuclear Plant. 22 Figure 6 - Annual Average Gross Beta Activity in Air Filters, Sequoyah Nuclear Plant 23 Figure 7 - Annual Average Gross Beta Activity in Drinking Water, Sequoyah Nuclear Plant 42 Figure 8 - Direct Radiation Levels, Sequoyah Nuclear Plant. ; 43 Figure 9 - Direct Radiation Levels, Sequoyah Nuclear Plant, i 4-Quarter Moving Average. 43 Figure 10 - Reservoir Monitoring Network - Sequoyah Nuclear Plant 57 Figure 11 - Annual Average Gross Beta Activity in Surface' Water, Sequoyah Nuclear Plant 58 4 j i f i l l-iv l i ~

1 a ENVIRONMENTAL RADIOACTIVITY LEVELS I. SEQUOYAH NUCLEAR PLANT ANNUAL REPORT 1983 i Introduction 4 1 The Sequoyah Nuclear Plant (SQN), operated by the Tennessee Valley t Authority, is located on a site owned by TVA containing 525 acres of land in Hamilton County,_ Tennessee, bounded on the east by Chickamauga Reservoir (see figure 1). The site is 12 miles (19.3 kilometers) northeast of Chattanooga, i l Tennessee, and 11 miles (17.7 kilometers) west-northwest of Cleveland, Tennessee. 1 The plant consists of two pressurized water reactors; each unit is rated at i 3,423 MWt and 1,171 MWe. Fuel was loaded in unit 1 on March 1, 1980, and the unit achieved criticality on July 5, 1980. Fuel was loaded in unit 2 in July 1 i. 1981 and the unit achieved initial criticality on November 5,1981. This-report describes the' environmental radiological monitoring conducted in 1983. - The preoperational environmental radiological monitoring program ] established a baseline of data on the distribution cf natural and manmade radioactivity in the environment near the plant site. However, seasonal, yearly, and random variations in the data were observed. In order to deter-mine the potential increases in environmental radioactivity levels caused by 4 the plant, comparisons were made between data for indicator stations (those near the plant) and control stations (those remote from the plant) in con-junction with comparisons with preoperational data. The Radiological Health Staff (Office of Power) and the Office of + Natural Resources and Economic Development carried out the sampling program outlined in tables 1 and 25. Sampling locations are shown in figures 2, 3,- 4, and 10, and table 2 describes the locations of the atmospheric and terres-trial monitoring stations.. All the radiochemical and instrumental analyses were conducted in TVA's Western Area Radiological Laboratory (WARL) located at Muscle Shoals, Alabama, and until its closing in October 1983, Eastern Area Radiological Laboratory (EARL) at Vonore, Tennessee, with the EARL being the primary laboratory for samples from SQN. Alpha and beta analyses were per-formed on Beckman Low Beta II, Beckman Wide Beta II, and Tennelec LB 5100 low i background proportional counters. Nuclear Data (ND) Model 100 multichannel analyzer systems employing sodium iodide, NaI(TI) detectors and ND Model 6620 Systems in conjunction with germanium detection systems were used to analyze l the samples for specific gamma-emitting radionuclides. At EARL, a ND Model 6620 system was used with both types of detectors. Samples of water, vege-tation, air particulates, food crops, and charcoal (specific analysis for }31 ) are routinely counted with NaI(TI) detection systems. If significant I 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 germanium system. Identification of gamma-emitting radionuclides'in all other types of 5~ L 6 g -n-..,-n.~+--.g ..,-n, - -, - -. g --,,,.w.,,,,._,w- ,n,.,+.,,,,,,.y .-.n -,, - - = -., ,.---wg

2 samples is. routinely performed by analysis on the germanium system. TVA-fabricated and Tennelec beta gamma coincidence counting systems are utilized for the determination of 131I concentrations in milk. Tritium determinations are made with Beckman LS150, Beckman LS100C, and Packard Model 3250 liquid scintillation counting systems. Data were entered in computer storage for processing specific to the analysis conducted. A computer, employing the ALPHA-M least-squares code, a multimatrix technique, was used to estimate the activities of the gamma-emitting nuclides analyzed by NaI(Tl). The data obtained by germanium detectors were resolved by the appropriate analyzer software and the software program HYPERMET. The detection capabilities for environmental sample analysis given as the nominal lower limito of detection (LLD) are listed in table 3. Samples processed by NaI(TI) gamma spectroscopy were analyzed for 14 specific gamma-emitting radionuclides and radionuclide combinations". For these analyses, radionuclide combinations'such as 103,10sRu and 05Zr-Nb are analyzed as one radionuclide. All 5.Lotopeaks found in germanium spectra were identified and quantified. Many of the isotopes identified by germanium spectral analysis are naturally occurring 4or naturally produced radioisotopes, such as 7Be, 40K, 212Bi, 2: Bi, 212Pb, a Pb, 22sRa, etc. LLDs for the analysis of the radio-4 2 nuclides listed below are given in table 3B. LLDs for additional radio-nuclides identified by germanium analysis were calculated for each analysis and nominal values are listed in the appropriate 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 WARL, as did EARL until its closing, participates in the Environmental Radioactivity Laboratory Intercomparison Studies Program conducted by EPA-Las Vegas. This program provides periodic cross-checks on samples of the type and radionuclide composition normally analyzed in an environmental radiological monitoring program. Routine sample handling and analysis procedures were employed in the evaluation of these samples. The results received during calendar year 1983 are shown in table 4. The 130 limits based on one measurement were divided by the square root of 3 to correct for triplicate determinations. "The following radionuclides and radionuclide combinations are quantified by theALPHA-Mleast-squarescomgutercode: 141'144Ce: 51Cr; 1311 103,106Ru; 4 II0 134Cs; ta7Cs; 95Zr-Nb; 58Co; Mn; 052n; 50Fe; 00Co; 40K; and Ba-La.

a b 3 e Table 1 ENVIROMENTAL RADIDACTIVITY SAMPLING ScalEDULE Neavy Air Charcoal Rain-Particle Atmospheric River Well Public Aqsattehie % Location Filter Filter water Fallout Motsture Soft Vegetation Milk Water Water Watee ed h Cheetanooga W W M M A M Deyton W W M M BW A M ~ Sale Creek - W W M M A Deity W W M M A M . heettumoods, W W M M A l Voltateer Ordinance l. Weths (Harrisoa) W W 'N M A Serrison Bay W W M' N A Ceersetown W W M M A Chester Frost Park (formerly Namilton County Park) W W M M A %lerk V W H M A Site N W W H M BW A Site SW W W M N BW A Form L Q W M Pam J Q W Fase NW Q W 4 Fem M Q W F;ns La* M W F re se+ M W F;te Su* M W Fire EM M FIra Br M Fire C M Chichamauga 4 Q/$ 8eservoir E. 1. Dupont M Cleveland. TN N C. F. Industries M On $4te Wall (1) N Fire Ma M F re S (Control) M W F:rs 8 (Control) M V - Fans C (Control) M W ' O. Weekly 9W. hlweekly' M. Monthly (overy 4 wechs) Q = Quarterly 8. $watannually A. Annually' fAdded to collection schedule in November 198). Fare f.e provided only two weekly milk samples. Farms Se and Su did ,not provide any milk samples. m s

4 Table 2 ATMOSPHERIC AND TERRESTRIAL MONITORING STATION LOCATIONS SEQUOYAH NUCLEAR PLANT Sample Station Approximate Distance and Direction from Plant LM-1 SQ, Southwest 0.75 miles (1.2 kilometers) SW LM-2 SQ, Northeast 0.75 miles (1.2 kilometers) N PM-1 SQ, Northwoods 10.5 miles (16.9 kilometers) WSW PM-2 SQ, Chester Frost Park, TN (formerly 3.75 miles (6.0 kilometers) SW Hamilton County Park) PM-3 SQ, Daisy, TN 5.5 miles (8.8 kilometers) W PM-4 SQ, Sale Creek, TN 10.5 miles (16.9 kilometers) N PM-5 SQ, Georgetown, TN 9.5 miles (15.3 kilometers) ENE PM-6 SQ, Work, TN 4.5 miles (7.2 kilometers) NNE PM-7 SQ, Harrison Bay, TN 3.5 miles (5.6 kilometers) SE PM-8 SQ, Harrison, TN 8.75 miles (14.1 kilometers) SSW RM-1 SQ, Chattanooga, TN (Control) 16.75 miles (27.0 kilometers) SW RM-2 SQ, Dayton, TN (Control) 17.75 miles (28.6 kilometers) NNE Farm J 1.25 miles (2.0 kilometers) W Farm HW 1.25 miles (2.0 kilometers) NW Farm L 2.75 miles (4.4 kilometers) NNE Farm M 3.5 miles (5.6 kilometers) NNE Farm Ma 0.75 miles (1.2 kilometers) W Farm Le 3.5 miles (5.6 kilometers) S Farm Sm 1.75 miles (2.8 kilometers) SE Farm Su 3.25 miles (5.2 kilometers) SSE Fa rm EM 2.5 miles (4.0 kilometers) N Fa rm Br 2.25 miles (3.6 kilometers) SSW Farm G 1.5 miles (2.4 kilometers) NNW Farm B (Control) 43.0 miles (69.2 kilometers) NE Farm C (Control) 16.0 miles (25.7 kilometers) NE Farm S (Control) 12.0 miles (19.3 kilometers) NNE 4 n

_ _. _ _. _. _ _ _ _ _ _ _ _. ~. _ _ _ _... _ m.. m. ..m__, .m_ P 1 Table 3 - DETECTTott CAPABILITIES FOR ENVTRONMENTAL SAMPLE ANALYSIS - A. Specific Analyses NOMINAL IDWER LIMIT OF DETECTION (LLD)* s Fish.. i Air .' Water and grain Sediment

plankton, Clas shells _ Toods,' meat,' -.

' Vegetation Soil and clan flesh, Particulates Charcoal Fallout

poultry,

' Milk i pCi/m3 pC1/m3 mC1/Km2 pC1/1' pCi/s. dry pC1/g, dry. pC1/a, dry - pCi/g. dry pC1/Kam. wet pC1/1 Total a 0,4 0.01 1.5 i Gross s 0.005 2.0 0.05

0.35 0.1

. 0.7 Gross S 0.01 0.05 2.4 0.20 0.70 0.1 0.7 25 3H 330 133I. 0.02 0.5 i 59Sr 0.005 10 ..- 0. 2 5 1.5 0.5 5.0 40 10 'USr 0.001 2 0.05 0.3 0.1 - 1.0 8 .2 P - *All LLD values for isotopic separations are calculated by the method developed by Pasternack and Harley as described in HASL-300. Factors such as sample size, decay time, chemical yield, and counting efficiency may vary for a given sample; these variations may change the LLD value for the given sample. The assun tion is made that all samples are analyzed within one week of the 2 7 collection date. Conversion factors: 1 pCi = 3.7.x 10 Bq; I aci = 3.7 x 10 Bq. a e I 1 1 4 .m 4 ..m. ,.m ,, A c.,_, mey.,4 ww. m

A O Table 3 DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALTSIS B. Camma Analyses NOMINAL IIE'ER LIMIT OF DETECTION (LLD) Air Water Vegetation Soil and Clam flesh Foods (tomatoes Meat and particulates and milk and grain sediment Fish and plankton Clam shells potatoes, etc.) poultry on pC1/m3 pct /1 pC1/g. dr7 pCi/g dry pC1/g. dry pC1/g dry pCi/g dry pCi/Kg wet pCi/Kg, wet NaI* Ce(L1)** NaI Ge(L1) NaI Ce(Li) Nal Ge(L1) Nat Ce(Li) NaI Ce(L1) NaI Ge(L1) NaI Ce(L1) Nat Ge(L1) 141.t""ce 0.03 38 0.55 0.35 0.35 0.35 38 90 144Ce 0.02 33 0.22 0.06 0.06 0.35 0.06 33 40 51Cr 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 1311 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 20 103 106Ru 0.04 40 0.65 0.45 0.45 0.45 40 150 losRu 0.03 40 0.51 0.11 0.11 0.74 0.11 40 90 134Cs 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 137Cs 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 952r-Nb 0.01 10 0.20 0.12 0.12 0.12 10 40 95Zr 0.01 10 0.11 0.03 0.03 0.15 0.03 10 20 95Nb 0.01 5 0.05 0.01 0.01 0.07 0.01 5 15 saco 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 5"Mn 0.02 0.01 10 5 0.20 0.05 0.15 0.01 f.15 0.01 0.08 0.15 0.01 10 5 40 15 E5Zn 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 2. "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 "CK 0.10 150 2.50 0.90 0.90 0.90 150 400 140Ba-La 0.02 15 0.68 0.15 0.15 0.15 15 50 140Ba 0.02 25 0.34 0.07 0.07 0.30 0.07 25 50 3"DLa 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. Methods 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 represent the LLD values achievable on a given sample. Water is counted in a 3.5-1 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 NaI(TI) crystal. The counting time is 4000 seconds. All calculations are performed by the least-squares computer program ALPHA-M. The assumption is made that all samples are analyzed within one week of the collection date.
- The Ge(L1) LLD values are calculated by the method developed by Pasternack and Harley as described in HASL-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 Marinelli beaker. Solid samples such as soil, sediment, and clam shells 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 petri dishes centered on the detector endcap. The counting system consists of a ND-6620 multichannel analyzer and germanium detector having an efficiency of at least 20 percent. The counting time is normally 4-8 hours. All spectral analysis is performed using the software program HYPERMET. The assumption is made that all samples are analyzed within one week of the collection date. Conversion factor: 1 pCi = 3.7 x 10 z Bq.

k Table 4 Results Obtained in Interlaboratory Comparison Program A. Air Filter (pCi/ filter) Gross Alpha Gross Beta Strontium-90 Cesium-137 EPA value TVA AVG. EPA value TVA AVG. EPA value TVA AVG. EPA value TVA AVG. a Date ( 30) WARL EARL (130) WARL EARL ( 30) WARL EARL ( 30) WARL EARL 3/83 26 11 ' 25 ' 25 68 9 69 ' 63 e' 20 3 - 21' 17 29 9 30* 25 8/83 13 9 ' 14 3619 < 38' 10 3 7 11' 15i9 - 17 ' B. Tritium in Urine (pCi/L) Date EPA Value ( 30) TVA AVERAGE WARL EARL 4 ~ 3/83 2470 610 2420 2540 '1650c, 5/83 1330 575 1793 6/83 1589 585 1753 1580

11/83 10081585 1053 '

Western Area Radiological Laboratory, Muscle Shoals, Alabama b Eastern Area Radiological Laboratory, Vonore, Tennessee, closed 10/83 c Equipment failure, values determined after report date m

-. 7 Table 4 (continued) 'E Results Obtained in Interlaboratory Comparison Program C. Radiochemical Analysis of Water (pCi/L) Gross Alpha' Gross Beta-Strontium - 89 Strontium - 90 Tritium Iodine -131 . EPA value TVA AVG. EPA value TVA-AVG. EPA value TVA . AVG. EPA value TVA AVG. EPA value TVA AVC. EPA value TVA AVG. Data (23c)- WARL EARL (230) WARL EARL (130) WARL EARL (t30) .WARL. EARL: (230) WARL EARL (133)' WARL EARL C' -1/83 29t13 27 ~ 25. 3129 29. 28 29.2t8.7 33.0 16t10.6*I 17.222.6 17.7 15.9t3.2*.

2/83 25601611 2510 2627-3/83-31 14 27 35 28t9 28 32 4/83 33301627 3733 3373 26.8t10.4 28.0 25.3' g

g 5/83 1129 10 11 5729 53 43 57.128.7 63.7 71.3 37.723.3 38.3 29.3 d 8

5/83 64t28 47 60 149213 133 136 24t9 29 31 13t3 13 10 6/83 15291584 1573 1577 I7/83 729 7

6 2229 22 20 2 8/83 1836 592 1930 1807 14110 14 14 9/83 St9 5 919 - 10 1519 13 1013 12 ~10/83 12102570 720 11/83 14 9 13 16t9 18 d 11/83 2229 -19 63t9 -61 1719 - 14 823 6 12/83 23891608 2390 20110 18 D. f - -Spectral Analysis of Water (pCi/L) Chramium - 51 Cobalt - 60 Zine - 65 Ruthenium - 106 Cesium - 134 Cesium - 137 EPA value TVA AVG.. EPA value TVA AVG. EPA value TVA AVG. EPA value TVA AVG. EPA value TVA. AVG. EPA value TVA AVG. Data' (t30) WARL EARL (23c) WARL EARL (t3c) WARL EARL (230) WARL. EARL (130) WARL EARL (t33) WARL EARL-I 2219 24 24 2119 '. 2 2 25 4819 55 50 20t9 20 20 1919 18 18 2/83 - 4529 ~45 35 d 3019 33 33 3319 32 33 27:9 27' 28 5/83 6/83 6029' 67 <72 .1319 14 c 16 3619 38 -36 40t9 42 <36 4729 46 47 2619 27 27 10/83 5129 47 1919 20 4029 41 5219 53 1519 17 2219 25 '

~

d _11/83 1129 11 15t9 15 1519 15 -d Laboratory Performance Evaluation Study Only 2. values reported, calculated error terms increase Previous and subsequent results satisfactory. No known explanation. 8 Calibration of beta detectors is ldone with Cs-137.. Nine isotopes and their daughters were present -in this sample. Average < value reported nationwide was 136 pCi/L. t .l

i Table 4 (continued) . Results Obtained in Interlaboratory comparison Drogram E. Foods (pci/kg, Wet Weight) Strontium - 89 Strontium - 90 Todine - 131 Cesium - 137 Barium - 140' Potassium - 40 EPA value TVA AVG. EPA value TVA-AVG. EPA value TVA AVG. EPA value TVA AVG. EPA value TVA AVG. EPA value TVA AVG. Dat1 (230) WARL EARL (23a) WARL EARL (230) WARL EARL (230) WARL EARL (t30) WARL EARL (230) WARL EARL 3/83-34.628.7 40.0 31.7 27.822.6 '28.3 31.3 36.9210.4 33.3 37.7 31.328.7 29.7.30.0 0 ' <25 <15 25922225 2533 2887 h h-F. Milk (pci/L) R, ~- - Strontium - 89 Strontium - 90 Todine - 131 Cesium - 137 Barium - 140 Potassium 40' EPA value TVA AVG. EPA value TVA AVG. EPA value TVA AVG. EPA value TVA AVG. EPA value TVA AVG.' EPA value TVA AVG. Datt (230) , WARL-EARL ~ (230) WARL EARL (230) WARL EARL ( 30) WARL EARL (230) WARL EARL (230) WARL EARL A i 2/83 37.4t8.7 42.3 17.8t2.6 18 54.5210.4 52.7 56.0 25.628.7 22.3 26.7 0 <25. <20 '6/83 2529 . 27 29 16t3 17 18' 30110 30 38 4729 48 47 15122132 1497 1613 1486t128 1520 1480 10/83 15t9 16 1423 13 40t10 39 3329 34 1550t135 1563 A history of sporadic difficulty with this sample type for all participants nationwide is probably due to sa=ple inhomogeneity. A Sample spoiled before analysis e 't A. f a

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I 11 Atmospheric Monitoring The atmospheric monitoring network is divided into three subgroups. Two local air monitors are located within the plant boundary. Eight perimeter 1 cir monitors are located at distances out to 10.5 miles (16.9 kilometers) from the plant in the towns of Sale Creek, Daisy, Northwoods, Harrison, and four other 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, 4, and 5. Ateachmonitor,airiscontinuouslypulledthroughaHollingsworth and Voss LB 5211 glass fiber particulate filter at a flow rate of 3 ft / min 3 (0.085 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 hori-zontal platform covered with gummed acetate to catch and hold heavy particle fallout. Moisture is collected from the atmosphere at each local monitor and at one remote monitor and analyzed for tritium. 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. The data from the two local monitors and the four perimeter monitors located within approximately five miles of the plant are radiotelemetered into the plant control room. Air filters are collected weekly and analyzed for gross beta activity. Analyses are not performed until three days after sample collection. The samples are composited monthly-for analysis of specific gamma-emitting radionuclides and 89 quarterly for Sr and 90Sr analysis. The results are presented in table 6. During this reporting period eleven weekly air filters were not collected because of equipment malfunction, three weekly air filters were damaged during processing and were unusable. One quarterly composite for strontium analysis was destroyed during analysis and unusable. The annual averages of the gross beta activity in the air particulate filters at the indicator stations (local and perimeter monitors) and at the control stations (remote monitors) for the years 1971-1983 are presented in figure 6. Increased levels due to fallout from atmospheric nuclear weapons testing are evident, especially in 1971, 1977,~1978, and 1981. These fluctua-tions are consistent with data from radiological monitoring programs conducted by TVA at nonoperating nuclear power plant construction sites. Table 5 presents the maximum permissible concentrations (MPC) specified in 10 CFR 20 for nonoccupational exposure. Rainwater is collected and analyzed for gross beta activity, specific. l gimma-emitting isotopes, strontium, and tritium. During this period one sample l was not available for any analyses because of equipment malfunction. One beta i cctivity and two strontium analyses were not completed because the samples were inadvertently destroyed during processing. For the gross beta analysis, a maxi-tum of 500 ml of the sample is boiled to dryness and counted. A gamma scan is

12 performed on'a-3.5-liter monthly sample. The strontium isotopes are. separated chemically and counted in a low background system. The results are shown in s table 7. The gummed acetate that is,used to collect heavy particle fallout is. Echanged monthly. -The samples are 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 eleven samples were not obtained because of equipment malfunction. and six samples were inadvertently lost or destroyed during processing and were unusable. The filter is counted in a single channel analyzer system. The data are shown in table 9. 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. During this reporting period six samples were not collected because of equipment malfunction, two samples collected were not usable because of insufficient volume, and two samples were lost or damaged during processing. i t f i

13 0 Table 5 MAXIMUM PERMISSIBLE CONCENTRATIONS FOR NONOCCUPATIONAL EXPOSURE MFC In Water In Air pCi/l* pCi/n?* Alpha 30 Nonvolatile beta 3,000 100 Trit iuin 3,000,000 200,000 337 Cs 20,000 500 883'3'6Ru 10,000 200 Ce 10,000 200 '52r ' 5Nb 60,000 1,000 3"'Ba 3"'La 20,000 1,000 I3*I 300 100 '5 Zn 100,000 2,000 5'Mn 100,000 1,000 Co 30,000 300 Sr 3,000 300 Sr 300 30 5'Cr 2,000,000 80,000 Cs 9,000 400 58Co 90,000 2,000

1 pCI = 3. 7 x 10- 2 3q, e a (~ ~ h w #(

ptC WA dr ~ e c a Ga3 2 999 x e = \\

TABLE 6 RADIDACTIVITY IN AIR FILTER PCI/M(3) - 0.037 8Q/M(3) NAME OF FACILITY _3E9991Ad._..______.......___._______........... DOCKET NO. 30-32Z4328.........__. E LOCATION OF FACILITY..gABILION.....___........._Igggg33gg_............ REPORTING PERIOD.I233...__........... TYPE AND, LOWER LIMIT 'ALL CONTROL NUMBER 08 TOTAL NUMBER'

- 0F INDICATOR LOCA{ IONS. LQGAIION.WIId.dIGUESI. ANNUAL _ DEAN

~#.-- ' LOC ATIO1) S ' NONROUTINE MEAN (F NAME MEAN ( 5 MEAN (g RE80eTED 0F ANALYSIS DETECTION a - ___.. 8 AUGE.b) QIIIANGE.AND.018EGIION..__.845GE.{.__. 8ANGE......... BEASURE5ENIS._ . 2E8f985ED __1LL91.... - GROSS 8 ETA 0.010 0.02( 476/ 519) NORTHWOODS, TN 0.02( 51/ 53) 0.02( 92/ 103) 622 0.01-- 0.04 10.5 MILES WSW 0.01-0.04 0.01- .0.03 ) GAMZA (GELI) .166 K-40 NOT ESTA8 0.02( 97/-139) LM2 NORTHEAST 0.02( 9/ 14) 0.02( 21/ 27) 0.00-0.06 0.75 MILES N 0 01-0.04 0.00-0.04 ,81-212 NOT ESTAB 0.02( 1/ 139) SALE CREEK, TN 0.02( 1/ 14) 27 VALUES <LLD 0.02-0.02 10.5 MILES N 0.02-0.02 r8-214 0.020 0.02( 1/ 139) LM2 NORTHEAST 0.02( 1/ 14) 27 VALUES <LLD 0.02-0.02 0.75 MILES N 0.02-0.02 F8-212' NOT ESTAB 0.00( 62/ 139) LM2 NORTHEAST 0.0 0 (. 7/ 14) 0.00( 12/ 27) 0.00-0.00 0.75 MILES N 0.00-0.00 0.00-0.00 RA-226 ' NOT ESTA8 139 VALUES <LLD 0.01C 2/ 27) O.01-0.01 -SE-7 0.050 0.06( 80/ 139) NORTHWOODS, TN 0.07( 9/ 14) 0.07( 14/ 27) 0.05-0.10 10.5 MILES WSW 0 05-0.09 0.05-0.09 TL-208 NOT ESTA8' O.00( 27/ 139) LM2 NORTHEAST 0.00( 2/ 14) 0.00( 4/ 27) 0.00-0.00 0.75 MILES N 0.00-0.00 0.00-0.00 AC-228 NOT ESTA8 0.00( 19/ 139) HARRISON, TN 0.00( 4/ 13) 27 VALUES (LLD 0.00-0.01 8.75 MILES SSW 0.00-0.01 SR 89-0.005 0.01(' 1/ 39) DAISY, TN 0.01( 1/ 4) 8 VALUES <LLD e 47 0.01-0.01 5.5 MILES W 0.01-0.01 SR 90 0.001 39 VALUES <LLD 8 VALUES <LLD 47 ANALYSIS PERFORMED Nominal Lower Limit of Detection (LLD) as described in Table 3. a. b. Mean and range based upon detectable measurements only. Fraction of detectable measurements at soecified locations is indicated in parentheses (F). w \\

TABLE 7 RADICACTIVITY IN RAINWATER PCI/L - 0.037 BQ/L NAME OF FACILITY.3g9UDIAU..........____.....___..__............. DOCKET N0. 30-32Zg323............ LO ATION 0F.FACILITT..g&BILIQN................. 13b313313............. REPORTING PERIOD.1283................. TYPE AND LOWER LIMIT ALL CONTROL NUMBER OF TOTAL NUM8ER OF INDICATOR LOCA{ IONS LQC&IIgg.WIIU.dIGdg3I. ANNUAL.gg&W DETECTION, MEAN (F NAME MEAN ( i.. LOCATI0g}5 NONROUTINE OF ANALYSIS __ILL D1____ ......._8 45 GE_b) 213IANGE_A50.DIREGIIQN.____B45GE{.___. ...BANGE{........ MEAN ( REPORTED ._RE8EGRBED BEASUREMENIS_. GROSS 8 ETA 2.400 4.84C 27/ 134) GEORGETOWN, TN 6.52( 3/ 13) 6.90( 12/ 28) 162 2.68-9.66 9.0 MILES ENE 5.39-8.58 2.51-~ 35.60 GAZZA (GELI) 163 K-40 NOT ESTAS 19.31( 44/ 135) LM1 SOUTHWEST 25.32( 9/ 14) 26.14( 7/ 28) 0.16-57.47 0.75 MILES SW 4.33- '57.47 4.00-56.19 51-214 NOT ESTAS 3.29( 27/ 135) LM2 NORTHEAST 7.50( 1/ 13) 4.48( 4/ 28) 0.40-7.50 0.75 MILES N 7.50-7.50 1.02-11.23 PS-214 NOT ESTA8 3.14( 8/ 135) HARRISON BAY, TN 9.22( 1/ 13) 1.93( 3/ 28) 0.06-9.22 3.5 MILES SE 9.22-9.22 0.20-3.61 F8-212 NOT ESTAS 1.75(. 46/ 135) HARRIS 0N BAY, TN 4.32( 2/ 13) 1.51C 8/ 28) 0.04-6.54 3.5 MILES SE 2.86-5.77 0.01-3.07 BE-7' NOT ESTAS 48.49( 48/ 135) WORr, TN 56.75( 5/ 13) 45.15( 14/ 28) 25.11-107.48 4.5 MILES NNE 38.71-76.33 29.04-62.49 SR 89 10.000 13.73( 5/ 133) HARRISON, TN 22.02( 1/ 12) 11.15C 1/ 28) 161 10.03-22.02 8.75 MILES SSW 22.02-22.02 11.15-11.15 SR 90 2.000 133 VALUES <LLD 28 VALUES <LLD 161 ANALYSIS PERFORMED TRITIUM 330.000 364.03( 4/ 135) WORKS TN 438.08C 1/ 13) 367.61( 1/ 28) 163 332.44-438.08 4.5 MILES NNE 438.03-438.08 367.61-367.61 s. Nominal Lower Limit of Detection (LLD) as ' described in Table 3. 'b. Mean and ranste based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in carentheses (F). U

e i TABLE 8 RADIOACTIVITY IN HEAVY PARTICLE FALLOUT ' MCI /KM(2) - 37000000.00 BQ/KM(2)_ .NAME OF FACILITY.1ggyQI&N...................____.............. LOCATION OF FACILITY._U451LIGN.................IEgggj$E1............. '0OCKET NO. 59-32Ze328....________ REPORTING PERIOD.1283................. ' TYPE AND LOWER LIMIT ALL CONTROL' NUMBER OF TOTAL NUMBER OF INDICATORLOCA(IONS.LQGAIION.WIIU_!flGdE3I. ANNUAL.5EaN... . LOCATIONS NONROUTINE '0F ANALYSIS. OETECTION* MEAN (F NAME MEAN (Ph MEAN (F) REPORTED ._ecatossen _.1LL01.... ._____s&ust_g DI3Isact_ ann.nIsacIInv.____sauss b____ ___s:sst.6.____.__ measuste:sI3._ GROSS BETA 0.050 0.13( 127/ 130) LM2 NORTHEAST 0.18( 13/ 13) 0.14( 25/ 26) 156 0.05-0.35 0.75 MILES N 0.07-0.29 0.07-0.31 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 at specified locations is indicated in parentheses (F). 1

1 TABLE 9 RADI0 ACTIVITY IN CHARC0AL FILTERS PCI/M(3) - 0.037 53/M(3) NA*E OF FACILITT_3 gugIst __............__________........._____ DOCKET N0. 50-32Zs32f_........... LOCATION 7F FACILITY..da$1 LIQ 3.____..........__.113S53311......___.... R E P O R T I% P E RIOD.12 5 3........._ __..... TYPE AND L3WI4 LIMIT 'ALL ' CONTROL. NUMBEE-OF ' TOTAL NUMSER OF. INDICATOR LOCATIONS OF ANALYSIS 3ETECTION" MEAN:(F)b LOCI!IQ3.WIId.$1Ggg3I_183y1L.g!!3[ _ LOCATI0ti$ NONROUTINE NAME MEAN (g 'MEAN (gr

EPORTED

_.2212235 2 - ._16L3.... _ _ _ _ E A S gip _ _ _ _ _ _ _ DIIIA3CE AUD. ISECII93..___3A335._... ...EAN35... ____. !!!$UEE:13IS.. rIODINE-131 0.02] .3.02( 76/ 517)- SALE CREEK, TN. 3.03( 6/ 52) 0.02( 17/-102) $17 .0.C2 - 0.03 10.5 MILES N 0.32-C.03 0.02-0.03 a. Nominal Lower Limit of Detection (LLD) as' described in Table 3. b. Mean and range based upon detectable measurements only. Traction of detectable measurements at specified locations is indicated in parentheses (F). T t m -+w

table 10 RADICACTIVITY IN ATMOSPHERIC MOISTURE PCI/M(3) - 0.037 SQ/M(3) NAME OF FACILITY 159y01&d............;.........__............... DOCKET N0. 29-32Za]23............ L OC A TION O F F A C TLIT T..g4 5ILION................._Ig ggg 3 311............. REPORTING PERIOD.123]..............._, ,a TYPE AND LOWER LIMIT. ALL CONTROL. NUMBER OF TOTAL NUMBER OF INDICATOR LOCA{ IONS LQGAIIQM.WIIN.UIGUgjI.jggy&L.MEAN.E_. LOCATION { NONROUTINE s a OF ANALYSIS DETECTION MEAN (F ..etse9sete ..ILLol. __ ..._.._s a u st _b) MEAN (F) NAME MEAN (F REPORTED DIsIasst au0.oInscIIgu.....Bassst.... .._saust.)........ stasuggunsIs.. TRITIUM NOT ESTAB 2.93( 43/ 45) LM2 NORTMEAST 3.91( 22/ 23)- 2.73( 22/ 23) 68 0.18-16.06 0.75 MILES N 0.42-16.06 0.17-12.95 a. Nominal Iower Limit of Detection (LLD) as described in Table 3. b. Mean and range based upon detectable measurements only. Traction of detectable measurements at snecified locations is indicated in carentheses (F).

19 Figure 2 l ATMOSPHERIC AND TERRESTRIAL MONITORING NETWORK ATMOSPHERIC AND TERRESTRIAL SAMPLES COLLECTED AT EACH STATION O LOCAL MONITOR @ PERIMETER MONITOR e REMOTE MONITOR DAYTON N RW2SQ Y l I I SALE CREEK ] 430 PM-SQ SOODY 68 0 8 ORGETOWN e PM 360 WORK DAISYi Ly.2 5Q LMISO PM 750 pp. igg PM 23Q L RED SA MOUNT N SPM 8SQ RMi$ CHICKAMAUGA DAM 10 MILES HAT TAN 00GA IS MILES LOOKOUT s MOUNTAIN ) ) 20 MILES i

'20 FIGURE 3 S O N CLEA A r g V / ./ .\\ f ~ f A W SGN ?n ^ tN ^ ^ O Air Monitor / Scale of Mitos 0 TLD Station Milk Sampling Station l 0 O

W.I G S WSw-g,gg,, ggy,, p N. $,\\. e - N N W., (',f c ,.. j A s... = ,,\\ C v .d ~~ / ,f fra) / ,h 3 y e.q ch a q%g" y [f J ~ 00 f w..T -\\ t_. R ss W., ./ / j. (D A -l N / L-r- h .8 /7 T ./ N. g,, I %:;_[ g/

TLo sv.vicas

^ " ' ~ m s_ / _.__ n$r - SEQUOYAH NUCLEAR PLANT SITE MONITORING STATIONS S

Figure 5 22 m fey 7lY . T%;*- - - ~ z: - ng. -[:.$ -?-- f- ' -:g?-~~@A.AS%;f %.. Je h % ,Y ,. g. _,, c ; y vah,y,. - g ~; t.3 -c.. +- u .,' s' '1 y/C.R.9g j* 9 vi, f,*>. ...,,s. 't g ~, wQs mty mw_yny m w;..y,e{^5 ,w ^ ,g, s ~ .. a w.c .gugx%% s[w ?g: N y$ Q f f 'p %s g mg gA ?lW: hth l t h .wa, n,!',. ? m'Kbh f4 iy f '^b' %g.h..>,g jc Mi s, T.,. Ac. 4.; h :lq_ u ye 4'j fg.sql %... e

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Figure 6 i I I I I I I I I I l l l l l l l l [ I l AfM1ALAVERAGE S BETA ACTIVITY I .30 sa SEQL AH Puwr %M% i M u .25 o b* 3$ i f g .0 ~ Preoperational Phase Operational Phase I ~ 4 G.15 l .10 l AveraSe-Preoperational Phase .05 U 197 1972 1973 19 4"197 197f 197 1978 1979 1 1980 198 1 1 P O

a. Data not collected in 1974.

25 Terrestrial Monitoring Milk' Milk is_ collected weekly from two dairy farms and three other farms (one fa m provided only two weekly samples) within a 5-mile radius of the plant (see figure 3), and from one or more of the three control dairy farms. Raw 181 milk is analyzed weekly for 1, and monthly for gamma-emitting isotopes and strontium. The results are shown in table 11. Two sarples were not available for pickup during this reporting period. 80 As has been noted in previous reports, the levels of Sr in milk i l - samples from farms producing milk for private consumption only are up to six times the levels found in milk from commercial dairy farms. Samples of feed and water. supplied to the animals were analyzed in 1979 in an effort to deter-eine the source of the strontium. Analysis-of dried hay samples indicated levels of 80Sr slightly higher than those encountered in. routine vegetation samples. Analysis of pond water indicated no significant strontium activity. This phenomenon was observed during preoperational radiological monitoring near Sequoyah and Bellefonte Nuclear Plants at farms where only one or two cows were being milked for private consumption of the milk. It [ is postulated that the feeding practices of these small farmers differ from those of the larger dairy farmers to the extent that fallout from atmospheric nuclear weapons testing may be more concentrated in these instances. ~ Similarly, i ~Hansen, et al., reported an inverse relationship between the levels of 80Sr in milk and the quality of fertilization and land management." ) Land Use Survey The routine land use survey was conducted in the summer of 1983. ResuIts of the survey identified three additional farms which'should be included = in the sampling program. These farms were added to the sampling schedule in . November 1983. One farm provided two weekly milk samples and two monthly s i vegetation samples. The other farms provided two monthly vegetation. samples (milk' samples are expected to be available in the spring of 1984)' It was concluded from evaluations of the survey results that the small changes in i land use have not increased the projected doses to individuals in the area .and that appropriate sampling is being conducted. 4 Vegetation Vegetation samples are collected quarterly from four farms.from which t, . milk is' collected and are analyzed for gamma-emitting radionuclides and strontium. Monthly vegetation sampling'is conducted at six additional locations (three of these were added to the sampling program in November 1983) and at three control l f' 'Hansen, W.G., et al., Farming Practices and Concentrations of Emission Products l in Milk, U.S. Department of Health, Education, and Welfare; Public Health Service Publication No. 999-R-6, May 1964. l

m. V e y L .26L t. e) faren.>The monthly-samples are analyzed'for gamma-emitting radionuclides with -quarterly analyses for: strontium. Approximately~1-2 kg of grass was broken or. U~ cut at. ground. level and'. returned for analysis. Efforts were made to sample - vegetation that was representative of _ the pasturage where animals graze. Table 12' s gives the results ohtained from the laboratory analynes. 1 CSoil' - 2 1 Soil. samples were collected-annually near each monitoring station to ~ _ provide'an indication of any long-term buildup-of radioactivity-in the environ-ment. Two additional 1 samples were taken at one of the control stations'in' E conjuncti'on with the1 Watts.Bar Nuclear Plant ~ radiological monitoring program. An F auger or " cookie cutter" type sampler was used to obtain samples of the top two inches (5 cm) of soil. These samples were analyzed forJgross beta activity,i_ . gamma-emitting radionuclides,.89Sr,.and Sri The results are given in table 13. 90 i-Ground Water + ~ An automatic sequential-type sampling device has been installed on a well-downgradient from Sequoyah Nuclear Plant. A composite sample from this. ~ -well is analyzed for gross betaLactivity and-gamma-emitting radionuclides', 3 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 l14. During this reporting period four samples for gross. beta activity: l-and gamma-emitting radionuclide analysis were not available:for collection. ( Public Water: f.' Potable water supplies taken-from-the Tennessee River-in. the vicinity-of.Sequoyah Nuclear Plant are sampled and analyzed monthly for gross. beta and. gamma-emitting radionuclides. Tritium, asSr, and 80Sr concentrations 1 are. determined in quarterly composite samples.- "The first potable, water supply. downstream from the plant.is equipped with.an' automatic sampler.with composite. samples analyzed monthly. LThe results are shown in-table'15. ' Figure 7fshows'the trends in gross beta activity i. n drinking water $ p -from 1971 through 1983. The annual' averages reported ~in 1983 are' consistent

with the! patterns established in th'e preoperational phase of the monitoring program and are:slightly. lower. than levels reported in surface: water samples.

(figure 11). i 'I j;

Environmental' Gamma Radiation Levels

f Bulb-type Victoree'n manganese-activated calcium fluoride (Ca:F: Mn): thermoluminescent dosimeters (TLDs) are placed at._16 stations aroundithe~ plant

near the site boundary,- ~atithe perimeter and remote air monitors,:and at 22 s additionalLatations approximately 5 miles from the site. to. determine the samma

exposure rates at.these.. locations'.1 The dosimeters, located within energy cop L pensating shields ' to correct for energy dependence, 'arelplaced.at:approximately

~. F g a. [

27 one meter above the ' ground, with three TLDs at each station. They are annealed and read with a Victoreen model 2810 TLD reader. The values are corrected for gamma res'ponse, self-irradiation, and fading, with individual gamma response calibrations and self-irradiation factors determined for each TLD. The TLDs are exchanged every three months. The quarterly gamma radiation levels deter-mined from these TLDs are given in table 16, which indicates that average levels at onsite stations are approximately 2-3 mR/ quarter higher than levels at offsite stations. This is consistent with levels reported at TVA's nonoperating nuclear power plant construction sites where the average radiation levels onsite are generally 2-6 mR/ quarter higher than levels offsite. The causes of these differences have not been completely isolated; however, it is postulated that the differences are probably attributable to combinations of influences, such as natural variations in environmental radiation levels, earth moving activities onsite, the mass of concrete employed in the construction of the plant, and l other undetermined influences. I Figure 8 compares plots of the data from the onsite or site boundary stations with those from the offsite stations over the period frca 1976 through 1-1983. To reduce the variations present in the data sets, a four-quarter moving ave' rage was constructed for each set. Figure 9 presents a trend plot of the direct radiation levels as defined by the moving averages. The data ' follow the same general trend as the raw data, but the curves are smoothed considerably. .{ Prior to 1976 measurements were made with less sensitive dosimeters, l and consequently the levels reported in this phase of the preoperational moni-l toring program are 1-2 times the levels reported herein. Those data are not l included in this report. Foo_d Crops, Poultry, and Beef Food crops, poultry, and beef raised in the vicinity of SQN are-sampled annually as they become available during the growing season. During this sampling period, samples of apples, cabbage, corn, green beans, potatoes, i and tomatoes were collected and analyzed for gross beta and specific gamma-emitting radionuclides. Two samples were lost during processing and analyses for gross beta unobtainable. Poultry and beef samples were collected and i l analyzed for gross beta activity and gamma-emitting radionuclides. The results are given in tables 17 through 24. o I 1 1 -1 I

TA8LE 11 RADI0 ACTIVITY IN MILK PCI/L - 0.037 SQ/L NAME OF FACILITY _3E990140_.............._.__..____..____........ DOCKET NO. 30-J2Zg]23........... LOCATION OF PACILITT..U481LI95..................Igggg33EE............ REPORTING PER100,128}............,.... g TYPE AND LOWER LIMIT . ALL CONTROL NUMBER OF-TOTAL NUM8ER OF INDICATORLOCAgIONS L DC & IIQM.MIId.UI GUE 11. Ag gy 4 L.Bg45 LOCATIONS NONR00 TINE (F ANALYSIS D ETECTION a MEAN ( } NAME MEAN (FMI _ MEAN (F) b ' REPORTED _ ____.samst{._.... ..eastoasto _.1LLol.... b ozsIasst_aup_ozaccIIos. _.saust.... .._naust_b........ stasuststgIs.. 'IODIRE-131 0.500 211 VALUES <LLD 160 VALUES (LLD 371 ANALYSIS PERFORMED GAMMA (GELI) 91 'CS-137 5.000 5.85C 3/ 52) H WALKER' FARM 5.85( 3/- 13)

39. VALUES <LLD 5.01-6.54 1.25 MILES NW 5.01-6.54.

K-40 NOT ESTAS 1269.74( 52/- 52) LOVELL FARM 1348.93( 13/ 13) 1334.27( 39/ 39) 1006.99-1544.67 2.75 MILES NNE 1160.60- 1501.29 1101.09-1513.09-BI-214 NOT ESTAS 6.43( 23/ 52) JONES FARM 10.24( 5/ 13) 10.21( 23/ 39) 0.65-22.01 1.25 MILES W-1 17-22.01 0.34-32.68 P8-214 NOT ESTAB 4.16C .8/ 52) JONES FARM 6.68( 4/ 13) 11.34( 12/ 39) 0.76-12.46 1.25 MILT $ W 4.02-12.46 0.07-30.83 r8-212 NOT ESTAS 1.92( 21/ 52) JONES FARM 2 22( 5/ 13) 1.92( 13/ 39) 0.18-4.69 1.25 MILES W 0.18-4.69 0.05-5.07 TL-208 NOT ESTAS 1.67( 7/ 52) JONES FARM 1.86( 4/ 13) 2.32( 7/ 39) 0.68-2.79-1.25 MILES W 0.68-2.79 . 0.24-5.87 SR.89 10.000 52 VALUES <LLO 39 VALU!S <LLD 91 ANALYSIS PERFORMED SR 90 2.000 7.59( 47/ 52) H. WALKER FARM 12.75( 12/ 13) 3.08( 26/ 39) 91 2.02-18.21 1.25 MILES NW 8.75-18.21 2.08. 5.37 1 e. Nominal Lower Limit of Detection (LLD) as described in Table 3. b. Mean and ranste based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (F). L

TABLE 12 RADI0 ACTIVITY ID VEGETATIOM PCI/G - 0.037 SQ/G (ORY WEIGHT) { NAME OF FACILITY _3E9Ug!43................... 00C(ET NO. 30-]ZZg328............ LOCATION OF FACILITY..NANILION................._IENNE33EE_............ REPORTING PERIOD.1283................. 'l TYPE AND LOWED LIMIT ALL

CONTROL, NUMBER OF I

TOTAL NUM8ER OF INDICATORLOCA{ IONS.LOCAIION.VIIU.NIGNESI. ANNUAL.NEAN.y._ LOCATION ( NONROUTINE OF ANALYSIS DETECTION a MEAN (F NAME MEAN ( MEAN (Fg REPORTED ...... 8 &NGE.b) DZ1IANGE.4N9.DIREGIION.... 8ANGE.g) ...SANGE......... NE41URENENIS.. ..EEEEDSNED ..ILLD1... GA;44 (GELI) 100 CS-137 0.060 .0.26(. 11/ 55) GOINS FARM 0.32( 7/ 13) 0.09( 2/ 45) 'O.08-0.97 1.5 MILES NNW-0.09-0.97' O.06-0.12 K-40 NOT ESTA8 17.43( 55/ 55) LOVELL PARM 29.69( 4/ 4) 19.04( 45/ 45) 1.57-46.67 2.75 MILES NNE 19.92-37.67 '2.50-37.12 8I-214 0.100 0.19C 11/ 55) GOINS FARM 0.22( 6/. 13) 0.13C 5/ 45) 0.11-0.33 1.5 MILES NNW 0.11-0.33 0.11-0.15 81-212-NOT ESTAB 55 VALUES <LLD 0.70( 1/ '45) 0.70-0.70 58-214 NOT ESTA8 0.10( 34/ 55) G0 INS FARM 0.16C 11/ 13) 0.0/( 23/ 45) 0.00-0.36 1.5 MILES NNW 0.01-0.36 0.00-0.20 P8-212 NOT ESTAS 0.06C 40/ 55) GOINS FARM 0.10( 11/ 13) 0.07C 38/ 45) 0.00-0.24 1.5 MILES NNW 0.01-0.24 0.00-0.37 l RA-226 NOT ESTAS 0.04( 3/ 55) J0NES FARM O.09( 1/ 4) 0.09( 4/ 45) 0.01-0.09 .1.25 MILES W 0.09-0.09 0.01-0.12 SE-7 NOT ESTAS 7.62( 55/ 55) H WALKER FARM 9.13( 4/ 4) 6.84( 45/ 45) 1.34-25.04 1.25 MILES NW 3.27-15.00 0.51-14.17 I .TL-208' NOT ESTAB 0.03( 28/- 55) JONES FARM 0.06( 21 4) 0.04( 25/ 45) 0.00-0.11 1.25 MILES W 0.05-0.07 0.00-0.17 CC-228 NOT ESTA8 0.18( 17/ 55) G0 INS FARM 0.27( 8/ 13) 0.15( 11/ 45) 0.06-0.65 1.5 MILES NNW 0.08-0.65 0.00-0.20 SR 89 0.250 0.26( 1/ 28) LOVELL FARM 0.26( 11 4) 0.40( 21 18) 46 0.26-0.26 2.75 MILES NNE 0.26-0.26 0.32-0.48 0.050 0.29( 28/ 28) EDGAR MALONE FAR 0.44( 4/ 4) 0.27C 17/ 18) SR 90 ~ 46 'O.06-0.75 2.5 MILES N 0.13-0.74 0.06-0.77 a. Nominal Imer Limit of Detection (11D) as described in Table 3. b. Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in carentheses (F). U l l

~- ~. ...... ~ - TABLE 13 RADI0 ACTIVITY IN S0IL PCI/G - 0.037 80/G (DRY WEIGHT) NAME OF PACILITY.3s9991&M.......... DOCKET'NO. 50-32ZA328....... ' LOCATION OP FACILITY..ga51 Ling....................................... REPORTING PERIOD.128}........... 8 ......It##tssti............. TYPE AND LOWER LIMIT ALL CONTROL. NUMBER OF TOTAL NUMSER OF INDICATOR LOCA{ IONS LeC&IIng.WIIg.gIGug3I.4NNU4L.gg&g.E.. LOCATIONS NONROUTINE OF ANALYSIS DETECTION a .MEAN (F) NAME .MEAN (F) MEAN (F)b: REPORTED _.essessato ..ILLoz.... .......samst.6...... DIsIasst.aso.ozancIIos.....sauss b.... ...saust 6....... measungsters.. GROSS BETA 0.700 19.34( 10/ 10) GEORGETOWN, TN 33.80( 14 12.06-33.80 9.0 ' MILES ENE 33.80-. 1/ 1) 14.31(- 4/ 4) 33.80 9.95- .19.28 GA%MA (GELI) 14-CS-137 0.020 0.36( 10/ 10) COUNTY PARK, TN 0.97( 1/ 1) 0.27C 4/ 4) 0.10-0.97 3.75 MILES SW 0.97. 0.97' O.19-0.37 K-40 0.250 7.54( 10/ 10) GEORGETOWN, TN .19.00(t 1/ 1) 3.91( 4/. 4) 2.08-19.00 9.0 MILES ENE 19.00-19.00 2.32-7.46 BI-214 0.050 0.81( 10/ 10) LMis SOUTHWEST 1.05( 11 1). 0.70( 4/ 4) 0.56-1.05 0.75 MILES SW 1.05-1.05-0.64-0.78 BI-212 0.100 ' 1.28C-10/ 10) -LM1 SOUTHWEST 1.93( 1/ 1) 0.71( 4/ 41 4 O.88-1.93 0.75 MILES SW 1.93-1.93 0.56-0.94 P8-214. 0.050 0.91C '10/ '10) HARRISON, TN-1.16( 1/ 13 0.77( 4/ 4) 0.65-1.16 8.75. MILES SSW 1.16-- 1.16 0.70-0.86 F8-212-NOT ESTA8 .1.14( 10/ 10) LM1 SOUTHWEST. 1.68(- 1/ 1) 0.65( 4/ 43 0.71-1.68 0.75 MILES SW 1.68-1.63 0.51-0.95 RA-226 0.050 0.81C. 10/ 10). LM1 SOUTHWEST-1.05C 1/- 1) 0.70( 4/ 43 0.56-1.05 0.75 MILES SW 1.05-1.05 0.64-0.78 QA-224 NOT ESTAS 1.30( 9/ 10) LM1-SOUTHWEST-1.69C 1/ 1) 0.74(- 4/ 4) 0.83- - 1.69 0.75 MILES SW 1.69-1.69 0.54-0.91 TL-208 0.020 0.40( 10/ 10) 'LM1 SOUTHWEST' O.60( 1/ 1) 0.23C 4/ 4) 0.25-- 0.60 0.75 MILES SW 0.60-0.60 0.17-0.35 l AC-228 0.060 1.19( 10/ 10) LM1 SOUTHWEST 1.78( 1/ 13 0.71C 4/ 4) 0.74-1.78 0.75 MILES SW 1.78-1.78 0.55-1.03 PA-234M NOT ESTAS 2.93( 5/ 10) HARRISON, TN 3.54( 1/ 1). .2.09( 1/ 4) 4 2.26-3.54 8.75 MILES SSW 3.54-3.54 2.09-- 2.09 i SR.89 1.500 -2.50(- '8/ 10) NORTHWOODS, TN 4.36( 1/- 13: 3.07( 2/ 4) 14 '1.59-4.36 10.5 MILES WSW 4.36-4.36 1.75, 4.38 i .SR 90 0.300

10. VALUES (LLO.

4' VALUES <LLD 7 14 ANALYSIS PERFORMED 1 L o.' Nominal-Lower Limit of Detection (LLD) as described in Table 3. b. Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (F). i

TABLE 14 - RIDICACTIVITY Im WELL CATER PCI/L - 0.037 8Q/L NAME OF PACILITY.119UDIAU....................................... DOCKET NO..}D-32Zg]28............ LO C A TION OF F A C IL IT Y..b e51LIGN..................IE NNE 33 E E............. REPORTING PERIOD.1283................. TYPE AND ' LOWER LIMIT ALL CONTROL NUMBER 0F TOTAL NUMSER OF INDICATORLOCA{ IONS LQGAIION.WIIM.UIGUE3I. ANNUAL.gEAN LOCATION { NONROUTINE- -MEAN (() NAME MEAN (F)I.. MEAN (F) REPORTED' 0F ANALYSIS DETECTION * . 2152985E0 ILL92.... ...... 845GE....... DI3IANGE.AND.DIREGII95.... 845GEI.... .. 845G5.1....... BEASUREBENIS.. GROSS BETA 2.400 2.81C 6/ 24) SQN WELL 86 2.97C 4/ 14) 3.4S( 11/ 12) 36 2.48-3.36 ONSITE NNE 2.61-3.36 2.60-4.24 GAMMA (GELI) 36 E NOT ESTAS 20.77( 7/ 24) SQN WELL 86 21.64( 5/ 14) 32.49(- 3/ 12) 3.32-40.83 ONSITE NNE 3.32-40.83-12.44-42.61 B1-214 NOT ESTAS 13.75( 13/ 24) MATS FARM 21.07( 6/ 10) 11.67( 8/ 12) 0.08-51.71 0.75 MILES W 0.08-51.71 0.48-32.48 PS-214 NOT ESTAB-20.69C 9/ 24) MAYS FARM 35.08C 4/ 10) 17.04C 4/ 12) 4.12-53.08 0.75 MILES W 16.96-53.08 2.48-37.68 P8-212 NOT ESTAB 1.35( 8/ 24) MAYS PARM 2.46( 3/ 10) 4.73C 1/ 12) 0.02-4.24 0.75 MILES W 1.23-4.24 4.73-4.73 .TL-208 NOT ESTAB 1.36C 4/ 24) MAYS FARM 3.54( 1/ 10) 12 VALUES <LLD 0.14-3.54 0.75 MILES W 3.54-3.54 AC-228 NOT ESTAB 4.41 ( 2/ 24) SQN WELL #6 4.41( 2/ 14) 12 VALUES <LLD 3.65-5.14 ONSITE NNE 3.65-5.14 TRITIUM 330.000 9 VALUES <LLD 4 VALUES <LLD 13 ANALYSIS PERFORMED a. Nominal lower Limit of Detection (U.D) as described in Table 3. b. Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in carentheses '(F). U

7 3.. ~ - .*c.%. ~... ?n,ytemppnemuremywm1w.. ,.,......s, g r., c .s.,-.. ? -. :,qq," ,,u.:, r. ~. ~. _ e: 4 ;.:. v, ,.,....y. n n y., ~... _....r: :. k.,, s,.; u. .,s

9..

v.; TABLE 15 RADI0 ACTIVITY IN PUBLIC WATER SUPPLY PCI/L - 0.037 BQ/L NAME OF FACILITY.3EgygIAU...................__.................. DOCKET N0._3D-32Z4323......__ __. w" LOCATION OF FACILITY._UAgILIQ3..................IENNE33EE............ REPORTING PERIOD.1233_......__........ e TYDE AND LOWER LIMIT ALL CONTROL NUM8ER OF TOTAL' NUMBER OF INDICATOR LOCAgIONS LDCAIIQH.WIIM.dIGUESI. ANNUAL.5EAN LOCATIONg NONROUTINE OP ANALYSIS DETECTION" MEAN (g) NAME MEAN ( MEAN (F). REPORTED ._2EREQREED . 1LLD1.... ......_ RANGE _...... DI3IANCE.AND.DIREGIIQM.____8ANGE...._ ...BANGE........_ 5183UEEEENIs.. GROSS SETA 2.400 3.36( 14/ 52) E.I. DUPONT 3.72( 3/ 13) 4.89( 12/ 27) 79 2.45-6.15 TRM 470.5 2.64-4.87 2.41-12.63 6AMMA (GELI) 79 K-40 NOT ESTAS 16.26( 19/ 52) DAISY, TN 20.01( 5/ 13) 9.15( 6/ 27) 0.79-46.37 5.5 MILES W 7.68-33.90 0.92-31.89 81-294 NOT ESTA8 14.67( 20/ 52) DAISY, TN 39.36( 6/ 13) 3.08C 12/ 27) 1.32-138.29 5.5 MILES W 9.33-138.29 0.45-9.13 P8-214 NOT ESTAS 20.27( 13/ 52) DAISY, TN 35.53( 7/ 13) 1.19( 6/ 27) 0.93-137.19 5.5 MILES W 3.32-137.19 0.45-3.28 PB-312 NOT ESTA8 1.60( 17/ 52) CHICKAMAUGA DAM 2.44C 6/ 13) 1.87( 13/ 27) 0.18-4.48 TRM 465.3 0.51-4.48 0.22-4.36 TL-208 NOT ESTAS 1.27( 9/ 52) CHICKAMAUGA DAM 2.14C 3/ 13) 1.69C 3/ 27) 0.20-3.87 TRM 465.3 0.98-3.87 1.01-3.01 AC-228 NOT ESTAS 5.07( 5/ 52) CHICKAMAUGA DAM 5.77C 3/ 13) 1.53( 1/ 27) 1.68-10.23 TRM 465.3 2.31-10.23 1.53-1.53 SR 09 10.000 16 VALUES <LLD 9 VALUES <LLD 25 ANALYSIS PERFORMED SR 90 2.000 16 VALUES <LLD 9 VALUES <LLD 25 ANALYSIS PERFORMED TRITIUM 330.000 359.06( 1/ 16) CF INDUSTRIES 359.06( 1/ 4) 9 VALUES <LLD 25 359.06-359.06 TRM 473.0 359.06-359.06 e Nominal Imer Limit of Detection (LLD) as described in Table 3. b. Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentleses (F). ' ',{-,.]; p;.'..s y,r -[, ,;,. ;..., ;,y -- ;, J., 7. 7 ;, ;y .,..y ., 7.f

l

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a.,. n. - %;p,-ey;

-,a - - T,. ' z. f

7..

m. aNo _ y ; b. .1 c s w_ a ,x _,~.u. ,c 2 ,.7'. .. ? +,, , N 5

y y.,

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33 a . Table 16-ENVIRONMENTAL GAMMA RADIATION LEVELS Average External Gamma Radiation Levels at Various Distances from Sequoyah' Nuclear Plant for Each Quarter - 1983 mR/ Quarter

b Dirtance Average External-Gamma Radiation Levels miles 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter (Feb-Apr 83)

(May-Jul 83) (Aug-Oct 83) (Nov 83-Jan 84) 0-1 18.0 1 3.7 19.4 i 1.9 20.4 1 4.5 21.0 i 2.1 1-2 15.0 1 5.1 16.9 i 3.3 17.5 i 5.1. 17.5 1 3.8 2-4 12.9 1 2.6 15.2 1 3.0 16.4 1 5.1 16.4 i 3.0 4-6 13.4 1.4 15.9 i 2.6 16.8 i 3.6 16.3 1 2.7 >6 13.2 1.6 l'.8 i 1.5 17.1 1 2.9 16.3 1 1.9

Average, 0-2 miles (Onsite) 16.6 i 4.5 18.4 i 2.8 19.4 1 4.9 19.6 1 3.3

Average,

>2 miles (Offsite) 13.2 1 1.7 15.7 1 2.4 16.8 i 3.7 16.3 1 2.5 [

a. Data normalized to one quarter (2190 hours),

b. All averages reported 10 (68 percent confidence level).

TABLE 17 RADI0 ACTIVITY IN APPLES PCI/KG - 0.037 80/KG (WET WT). NAME OF FACILITY 3gSUSI4g....................................... DOCKET NO..$Q-32Zg}2)............ LCCATION OF FACILITY..g&gILI95..................IEggE33Eg............. REPORTING PER100,123}................ .y. TYPE AND LOWER LIMIT ALL CONTROL' NUwSER OF LOCATIONS NONROUTINE TOTCL NUMBER OF INDICATOR LOCATIONS LQGAIIQM gIIg UIGug3I 4Ngy&L.Ug43.I'. MEAN ( }b NAME MEAN (F) MEAN (F)b REPORTED ~ OF ANALYSIS DETECTIONa......8&gGE{...... DISIANGE.AND.DIREGIION.... 845GE.b,,,, __,ggggg,b,,,,,,,, gggggggggyg3,, ..EEEE98350 . 1LLDA.... GR SS SETA NOT ESTAS 2686.64( 1/ 1) HARRISON BAY,.TN.2686.64( 1/ 1) 2298.00( 1/ 1)' 2 2686.64-2684.64. 3.5 MILES SE 2686.64-2686.64 2298.00- 2298.00 GANNA (GELI) 2-K-40 NOT ESTA8 1421.00( 1/ 1) HARRISON BAY, TN 1421.00( 1/ 1) 1812.76(. 1/ 1) 1421.00- 1421.00 3.5 MILES SE 1421.00- 1421.00 1812.76-.1812.76 i Nominal lower Limit of Detection (LLD) as described in Table 3. a. b. Mean and ranAe based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in carentheses (F). s.m

TASLE 18 RADIDACTIVITT 13 CASSAGE PCI/KG - 0.037 80/KG (WET' WEIGHT) NAME OF FACILITT.319y9Iag........................................ D0CKET NO. 19-32Zg328............ LOCATION OF FACILITT..ua51LI93............._....IEbst33tt............. REPORTING PERIOD.1283................. - TTPE AND LOWER LIMIT ALL-CONTROL NUM8ER OF TOTAL Nuel 8ER OF IMOICATOR LOCATIONS OF ANALYSIS DETECTION

MEAN (F)b LocaIIQM.WIIU.HIGut1I.aWNUsk.BlaM.E..

LOCATIONg NONROUTINE NAME MEAN (g) MEAN (Fg REPORTED -..esaressan ..s6Ln2.... .......sasse6...... nIsrance.aun.oInscIInv.....mause..... ...mavan......... szasummanurs.. .GR05$ SETA 25.000 3441.34( 1/ 13 1 MILES NW 3441.34( 1/ 1) 3612.76( 1/ 1) 2 3441.34-3441.34 3441.34-3441.34 3612.76-3612.76 GanMA (GELI) 2 E-40 NOT ESTAB 1435.73(- 1/ 1) 1 MILES NW 1435.73( 1/ 1) '1941.94( 1/ 1) 1435.73-1435.73 1435.73-1435.73 1941.94-1941.94 81-214' NOT ESTAB. 9.52C 1/- 1) 1 MILES NW 9.52C 1/ 1) 1 VALUES <LLD 9.52-9.52 9.52-9.52 PB-214 NOT ESTAB 7.31( 1/ 1) 1 MILES NW 7.31( 1/ 1) 1 VALUES <LLD 7.31-7.31 7.31-7.31 ?B-212 NOT ESTA8 1 VALUES (LLD '1.94( 1/ 1) 1.94-1.94 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 at specified locations is indicated in carentheses (F). m r

( l ~,. .~ ... ~. _. ~- l TABLE 19 RADI0 ACTIVITY IN CORN PCI/KG - 0.037 SQ/KG'(WET WEIGHT) .... NAME.0F FACILITY.3 QUQInd........_..__ DOCKET NO._39::32Ig]28_.........,,. $l LOCATION OF FACILITY..WABILIoM..._..............I 55833:1............. REPORTING PERIOD.Is33....__..'......... TYPE ANO LOWER LIMIT ALL CONTROL NUMSER OF TOTAL NUMBER OF INDICATOR LOCATIONS LQCAIIQg.MIId.UIGdc3I.jppy&L.Nc4N.... LOCATION {. NONROUTINE 0F ANALYSIS 'OETECTIONa MEAN (F)b NAME-MEAN (FW MEAN (F) REPORTED ..testossen . 1Lini......_...saust!...... oIsIasst.aun.oIstcIzou.....saustk.... ...saust.b._..... sensustnesIs.. GROSS BETA-25.000 4539.01( 1/: 1) 1 MILES NW 4539.01(. 1/ 1) 3062.59(- 1/ 1) 2 4539.01-4539.01 4539.01-4539.01 3062.59-3062.59 GAIMA (GELI) 2 K-40 NOT ESTAS -2156.11C 1/ 1) 1 MILES NW 2156.11( 1/ 13 3103.18( 1/ 1) 2156.11-2156.11 2156.11-2156.11 3103.18-3103.18 .P8-212 NOT ESTA8 1 VALUES <LLO 1.75C 1/ 1) 1.75-1.75 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 at specified locations is indicated in carentheses (F).

TA8LE~20 RADI07.CTIVITY IN' GREE 3 8EANS PCI/KG - 0.037 80/KG (WET WEIGHT) 'NAME OF FACILITY.3g9y0IAU............................. D0C K ET NO..]Q::]2Zg]2$............ -

LOCATION OF FACILITY..g&gILIgg..................Igggg33EE.............

REPORTING PERI 00.Itj]................. TYPE ANO LOWER LIMIT ALL CONTROL NUM8ER OF' . TOTAL'NUM8ER. OF INDICATOR LOCAgIONS LQC&IIQM gIIU.tjlgggil.jggy&L.g[3N . LOC ATIONg ' NONROUTINE OF ANALYSIS DETECTIONa MEAN ( NAME MEAN (FE.. MEAN (F) REPORTED .. 255208559 ..iLL01.... ....... RANGE.g) DI3IANCE.AND.DIREGIION.... 54NGEh.... ...HANGE......... 5t&3URESENI3.. GROSS SETA 25.000 3118.30( 1/ 1) 1 MILES NW 3118.30( 1/ 1) 5238.54C 1/ Il 2 3118.30- 3118.30 3118.30- 3118.30 5238.54-5238.54. GAIMA'(GELI) 2 'K NOT ESTAS 1631.93( 1/ 1) 1 MILES NW 1631.93( 1/ 1) 2601.57C 1/ 1). 1631.93-1631.93 1631.93-1631.93 2601.57-2601.57 PS-214 NOT ESTAS 2.38( 1/ 1) 1 MILES NW 2.38( 1/ 1) 1 VALUES <LLO 2.38-2.38 2.38-2.38 4 . a. ' Nominal Lower Limit of Detection (LLD). as described in Table 3.

b. 'Nean and range based upon detectable measurements only. Fraction of detectable measurements at snecified locations f a indicated in parentheses (F).

d

~ ---s .~$- L 1 f TABLE 21 l RADI0ACTIVITT IN POTAT0ES 'PCI/KG ,0.037 80/KG (WET. WEIGHT) ,. NAME OP.FACILITT.119UDIAU....................................... D0CKET N0. 50-32Z4325............ M -. _LOCATION OF FACILITT..UA51LI05..................IENNf33EE............. REPORTING PER100,12$}................. TTPE AND' LOWER ' LIMIT ALL. CONTROL NUMBER OF TOTAL NUM8ER OF INDICATORLOCA{ IONS. L O G &I] Q N.M IId.tf 1 Glf g 31.& N NU A L.BE A M.... LOCATIONS NONROUTINE (b ) NAME MEAN (F)b MEAN (F) b REPORTED. OFLANALTSIS .. DETECTION a MEAN F . 8E81988E0 ..ILL01.... .......B&5SE....... 011IANCE.AND.018EGIION.....EANGE.b... ...ggggg.g..... gggggggggggs,, Gross SETA - 25.000 6154.37(- 1/ 1) 1 MILES NW. 6154.37C 1/ 1) 1 6154.37-6154.37 6154.47-6154.37 G A=4. (GELI) ' 2 E-40 NOT ESTAB 3452.66( 1/ .1) 1 MILES NW 3452.66( 1/ 1) 3118.61( 1/ 1) 3452.66 -3452.66 3452.66-3452.66 3118.61-3118.61

e. ' Nominal Lcwer Limit of Detection (LLD) as. described in Table 3.

b. Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in carentheses (F). m.

. TABLE 22, ( RADI0 ACTIVITY I:3,TOIATOES PCI/KG.- 0.037 80/KG (WET WEIGHT) NAME OF FACILITY.$t9UQI48............. DOCKET NO. 50-12Z4325............ LOCATION OF FACILITY..gagILIgg........................................ REPORTING. PERIOD.128s................. ....Iggggssgg............. TYPE AND LOWER LIMIT-ALL~ CONTROL' NUMBER OF TOTAL NUMBER-OF ' INDICATOR LOCATIONS LQC&IIQg.gIId.disuisI.aNNyaL.3 GAM 0F AWALYSIS . DETECTION a MEAN (F)b NAME MEAN (5F.. LOCATION {~ NONROUTINE' nEAN (r) REPORTED ..etstossin . 1LLol.... b .......saust....... DIsIsact aso.nzaccIIon.....sausz..... ...saust.b....... stasustersIs.. GROSS BETA-25.000 3564.41( 1/. -1) 1 MILES NW 3564.41( 1/ 1) 1 3564.41-3564.41 3564.41-3564.41 GAMMA (GELI)- 2 K-40 NOT ESTAS 1876.07( 1/ 1) 1 MILES-NW 1876.07( 1/ 13 1834.11C 1/ 1) 1876.07 -1876.07 1875.07-1876.07 1834.11-1834.11 PB-214 NOT ESTAB 1 VALUES <LLO 4.06( 1/ 1) '4.06-4.06

s. ~ Nominal lower Limit of Detection (LLD) as described in Table 3.

b. Mean and range based upon detee' table measurements only.. Fraction of detectable measurements at specified locations is indicated in carentheses (F). e M_ 9 9, g

4 .l l + -... -. ~.. - - - _ - -... _.,,. _ _. ._.a ; TABLE 23 l t .RADI0 ACTIVITY IN POULTRY PCI/KG - 0.037 80/KG (WET WEIGHT) NAME OF_ FACILITY.339Unlag......................___....__......._ DOCKET.N0._30:32Ze}28._.......__. LOCATION OF FACILITY..g&gILIng..........._______.1155133:1............. REPORTING PERIOD.I23}............._... ,o TYPE AND ' LOWER LIMIT ALL CONTROL NUM8ER OF TOTAL NUMBER OF INDICATORLOCA{ IONS.LocaIIng.MIIU.UIGUg3I.aNNWaL.BlaN.5__ . LOCATIONS NONROUTINE OF ANALYSIS DETECTION a MEAN (F) NAME MEAN (F) MEAN (F) b REPORTED __etacosato- ..ILLol.... .__.. _taust_i_..__ oI 3Is sc a.a u o. oI s tc II os.....a a ns t.P___. ___samGt.b_.____ sta3ustetuIS.. ~OR.S$ 8 ETA 25.000 6219.24( 1/ 1) H WALKER FARM 6219.24(. 1/ 1) 3939.51( 1/ 1) .2 6219.24-6219.24 1.25 MILES NW 6219.24-6219.24 3939.51-3939.51 GAMMA (GELI) 2 K-40 NOT ESTAS 2281.30( 1/ 1) H WALKER FARM 2281.30( 1/ 1) 1530.64C 1/ 1) 2281.30- 2281.30 1.25 MILES NW 2281.30- 2281.30 1530.64-1530.64 TL-208 NOT ESTA8 0.12( 1/ 1) H WALKER FARM 0.12( 1/ 13 1 VALUES <LLD. 0.12-0.12 1.25 MILES NW 0.12-0.12 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 at specified locations is indicated in parentheses (F). - - - - - - - - ^ - - - - - ' - ' " - -

TABLE 24 -RADI0 ACTIVITY IN SEEP PCI/KG - 0.037 SQ/KG (WET WEIGHT) NAME OF FACILITT 3EQUDI4U....................................... 00CKET NO. 30-32Z4328............ LOCATION OF FACILITY. 5451 LION............... .IEbut33EE............. REPORTING PERIOD 2233................. TTPE AND LOWER LIMIT ALL CONTROL . NUMBER OF -TOTAL NUMSER OF INDICATOR LOCATIONS OF ANALYSIS -DETECTION

MEAN (F) b LQG4IIQ3.WIIU.UIGUg31.4MMUAL.3g&M.I..

LOCATIONS NONROUTINE (P{ b NAME MEAN (F) MEAN REPORTED ..EEEE985ED ..ILLD2.... ...... 343GE b..... DI$IAMGE.AND.DIStGIZON.... 8ANGE..... .. 84NG1......... BE43USEstNIS.. GROSS BETA 25.000 4972.13( 1/ 13 JONES FARM 4972.13(- 1/ 1) 3885.57C 1/ 1) 2 4972.13-4972.13 -1.25 MILES W 4972.13-4972.13 3885.57-3885.57 G AML' A (GELI) 2 K-40 NOT ESTAB 1797.00( 1/ 1) JONES FARM 1797.00( 1/ 1) 1624.53( 1/ 1) 1797.00- 1797.00 1.25 MILES W 1797.00- 1797.00 1624.53-1624.53 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 at snecified locations is indicated in parentheses (F). O empo. ,4 m.

_._.m,, .._m ,_u I I E l l 5 l l k l l l l l l l l B IVITY &8ME'L"Hi"Pum 4 5 E Preoperational Phase Operational Phase i i5 E

i I

I I i

i 41 t y e .I

ieure 3 4

-) s 4 24 Direct Rodsotion Levels Sequoyoh Nuclear Plant

c 22 a

i i vi

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2e s b. On.,ve ? 9 i k 18 / I g o / i.. S A ~l !.s t / -\\ i\\ a 9 f . S,"' ' ',9'h \\ / % .\\ v % -o' i / i, l{i 'g., !\\ j V.i / ) is \\ d i i t \\ ! h-d \\. ' l!' s/ i ,P 'l \\i e

i. i

\\!'\\i i \\ l! I 8 !BoginPlant k/ i y iOperation M q l I t i I I I I 12 1976 1977 1978 1979 1988 1981 1982 1983 t.. Figure 9 4 i Sequoyoh Nuclear Plant ~ -) 29 Direct Rodtetton Levels i 4-Quarter Moving Average i 22 l ..] i I l a I l I 28 Onsste 1 l 1 h is l 4 R e g /g \\. e,n".$ .h, lF.A' \\ k. . A 16 e -o, Af \\ s e ( ,. { ,,'*-o g 'g, T,4..e Oftette b /I j a 'e i p 1 d 14 j Began Plant . Operetson 8 I g g g i f f I I I2 ig76 1977 1978 1979 1988 1981 1982 1983

45 l Reservoir Monitoring Samples are collected from the Tennessee River as detailed-in table 25. Samples collected frr radiological analysis include water and Asiatic class 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 10) and conform to sediment ranges established and surveyed by TVA. Water Water samples are collected automatically 'tgr sequential type sampling devices at.three cross sections and composite samples analyzed monthly for- ' gross' alpha and beta activity and gamma-emitting radionuclides. Further com-posites are made quarterly for strontium and tritium analyses. Results are displayed in table 26. Figure 11 presents a plot of the gross beta activity i in surface water from 1971 through 1983. Indicator stations are those located downstream from the plant and controls are located upstream. The levels reported are consistent with gross beta levels measured in surface water samples taken from the Tennessee River in preoperational monitoring programs conducted by TVA i at other sites. During this reporting period one station had intermittent } power supply problems and three monthly samples were not collected. I j Fish Radiological monitoring for fish was accomplished by analyses of j composite samples of adult fish taken semiannually from each of three contigu-ous 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 are analyzed.for gross alpha and gross beta activity, for gamma-emitting radionuclides, and for strontium content. Results are given in tables 27 through 30. During this reporting period one : sample was of 'insuffi-cient size to permit analysis. 4 i Sediment Sediment samples were collected semiannually from dredge hauls made f or bottom fauna. Gamma, gross alpha, and gross heta activity and Sr and 89 SUSr 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'31. 1 , - - - ~,. -.,w.,..

46 In addition to the. sampling described'above, shoreline sediment samples were collected at three recreation-use areas.(twondownstream from'the plant-and one upstream) in the vicinity of SQN. Samples were'taken in'May and November 'and 'analgzed for gross alpha, gross ' beta, gamma-emitting ' radio-nuclides, 89Sr, and Sr. Results are given in table 32. 8 Asiatic Class Samples of Asiatic clams were collected semiannually with'a Ponar ' dredge from three stations and analyzed for gamma,' gross alpha,'and' gross' beta l activity. The asSr and 80 Sr content was determined in the shells. Resdits are given in tables 33'and 34. w -

b 47 Table 25 SAMPLING SCHEDULE - RESERVOIR MONITORING 4 Biological Samples Tannessee River-Benthic Shoreline (Mile)' Fauna-Sediment Sediment Fish" Water Samples -472.8 X j 473.2' Automatic' sampler 477.5. X J i 478.3 X -480.8. X X 483.4 X X Automatic sampler 485.2 (Control) X 496.5 (Control) X X 497.0 (Control) Automatic sampler 4 s. Fish samples are taken from Watts Bar, Chickamauga, and Nickajack Reservoirs. . b. Composite sample analyzed monthly. i t i e b ( t + s 1 + I

TABLE 26 RADI0 ACTIVITY IN SURFACE WATER TOTAL PCI/L - 0.037.80/L N NAME OF FACILITY _3EQyQIgd..__...._____..___ ______..___....... DOCKET N0. 50-32Zg323............ LOCATION OF FACILITY _.ggg1LIQg_ __....__...__...Ig3bg}}gg___.......__. REPORTING PERIOO_I23}.g..... __...... g TY?E AND LOWER LIMIT ALL CONTROL vuw3ER OF TOTAL NUM8ER-0F INDICATOR LOCA{ IONS LQGAIIQN.WIId.UIGUE3I.ABMW4L_gE&N.'.. LOCATIONS N 0 '. R OUT IN E OF ASCLYSIS DETECTION MEAN (F) NAME MEAN (F)b MEAN (F) b

go02TED a

..!!Bf985ED ..ILLDl____ .....__BANGE....... DIII A5GE. AND.DIREGIIQN.....EANG! _,, ,,_g g y g g,b _ _,,,,, gggsygggg3rg,, b G;.55 ALPHA 2.000

23 VALUES <LLO 2.51(=

1/ 13) 36 2.51-2.51 GROSS SETA-2.400 3.17( 11/ 23) TRM 483.4 3.25( 7/ 13) 3.75( 9/ 13) 36~ .2.52-4.43. 2.52-4.43 2.45- -7.57 GAMMA'(GELI) 36 K-40 .NOT ESTAS 13.09( 7/ 23) TRM 483.4 15.23( 5/ 13) 14.87( 4/ 13) 2.84-30.88 2.84-30.88 0.25-51.33 SI-214 NOT ESTAs 3.81( 10/ 23) TRM 473.2 5.55C 4/ 10) 3.53( 6/ 13) 0.43-15.29 0.43-15.29 0.55-6.17 PS-214 NOT ESTA8 4.77C 3/ 23) TRM 473.2 8.67( 1/ 10) 2.02( 2/ 13) 2.64-8.67. 8.67-8.67 0.02-4.01 08-212 NOT ESTAB 2.23( 11/ 23) TRM 473.2 2.32( 5/ 10) 3.67( 3/ 13) 0.33-5.14 0.33-5.14 0.99-8.80 SR 89 10.000 8 VALUES <LLD 4 VALUES <LLO 12 ANALYSIS PERFORME0 SR TO 2.000 8 VALUES <LLD 4 VALUES <LLD 12 ANALYSIS PERFORMED TRIT 1U7 .330.000 565.40( 21 8) TRM 483.4 711.87( 1/ 4) 350.63C 21 4) 12 418.92 ' 711.87 711.87-711.87. 362.88-398.39 a. Nominal Lower Limit of Detection (LLD) as described in Table 3. b. Mern and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in carentheses (F). ~ -

TA8LE 27 RADI0 ACTIVITY IN NHITE CRAPPIE (FLESH) ~ ~ ' PCI/G - 0.037 BQ/G (ORY NEIGHT) NAME OF FACILITT.3tggggag....................................... DOCKET NO. 10-32Za328............ LOC A TI ON 0e F ACI LI T Y..Ba51LI9N..................IE Nut s3 tt............. REPORTING PERI 00.1283................. TYPE AND LONER LIMIT ALL CONTROL NUMBER OF LcCATIONS NONROUTIME TOTAL NuMsER OF INCICATOR LOCATIONS L9saIZON.WIIU.UIGUE3I.a59UaL.5 tam.E.. OF CNALYSIS DETECTION

MEAN (p)b NAME MEAN (F)

MEAN (F) b REPORTED . 25s20:559 . 16La1.... .......saust.6...... DI sis uc t.a so.oI t scII em.....as ust }..._ ...sasse t....... neasuscetsIs.. -GR.55 ALPHA. 3.100 0.34( 1/ 4) CHICKAMAUGA RES 0.34( 1/ 23 2 VALUE5 <LLO -6 0.34- 'O.34 TRM.471-530 0.3.- 0.34 G0555 SETA 0.100 - 34.69( 41 4) NICKAJACK RES 35.10( 2/ 2) 18.38C 21 2) 6 31.76-38.45 TRM 425-471 31.76-38.45 16.43-20.33 GAMMA (GELI) 6 C5-137 0.020 0.11( 41 4) CHICKAMAUGA RES 0.11C 2/ 23 0.07C 2/ 2) 0.06-0.13 TRM 471-530 0.11-0.12 0.06-0.08 K-40 NOT ESTAs 16.72( 4/ 4) CHICKAMAUGA RES 17.32( 2/ 2) 7.74( 2/ 2) 15.72-17.51 TRM 471-530 17.13-17.51 7.19-3.23 PS-214 NOT ESTAS 0.01C 1/ 4) CHICKAMAUGA RES 0.01( 1/ 2) 2 VALUES <LLO O.01-0.01 TRM 471-530 0.01-0.01 F8-212 NOT ESTAB 0.00( 2/ 4) CHICKAMAUGA RES 0.00( 1/ 2) 2 VALufs (LLO O.00-0.00 TRM 471-530 0.00-0.00 SR 89 0.500 0.68( 1/ 4) CHICKAMAUGA RES 0.68( 1/ 2) 2 VALUES <LLO 6 -0.68-0.68 TRM 471-530 0.68-0.68 SR 93 0.100 4 VALUES CLLO 2 VALUES (LLO 6 ANALYSIS'PERFORMEO e. Nominal".14wer Limit of Detection (LLD) as described in Table L , 4esa and range based upon detectable measurements only. Fraction of detectable measurements at soecified locations is indicated in parentheses (F). b. 4

TABLE 28 RADICACTIVITY IN CHANNEL CATFISM (FLESH) PCI/G - 0.037 SQ/G (ORY WEIGHT) NAME-OF FACILITY _3tgyGI33.____............__.................... DOCKET No. 30-32Ig328............ wO LOCATION OF FACILITY._U481LI95..........__...._.I15913311.....__..... REPORTING PERIOD.123}_..,______....... TYPE AND LOWER LIMIT ALL CONTROL NUMBER OF LOCATIONS NONROUTINE TOTAL NUMBER OF INDICATOR LOCA{ IONS LQCAIIQ3_yJIg_gjGgg11_abMUAL.St45 E_. NAME MEAN (F) MEAN (5) b ggs0RTED OF ANALYSIS DEYECTION* MEAN (F) ..etsentato 1,,01.... ______ saust....... alsIauct_auo.oIstcIIos.....sassc6.... ___taust.t_______ sessustersIs.. G,_55 ALPHA 3.100 4 VALUE5 <LLD 2 VALUES (LLO 6 ANALYSIS PERFORMED GROSS SETA 0.100 20.54C 4/ 4) CHICKAMAUGA RES 22.28C 2/ 2) 17.53( 2/ 2) 6 14.39-23.19 TRM 471-530 '21.97-22.60 11.91-23.15 G2M;A (GELI) 6 C5-137 0.020 0.04( 2/ 4) NICKAJACK RES 0.05C 1/ ~2) 0.0$( 1/ 2) 0.04-0.05 TRM 425-471 0.05-0.05 0.08-0.08 t-40 NOT ESTAB 9.37( 4/ 4) CHICKAMAUGA RES 10.43( 2/ 23 8.31( 2/ 2) 4.49-11.48 TR4 471-530 9.38-11.48-5.53-11.09 P8-212 NOT ESTAS 0.00( 1/ 4) CHICKAMAUGA RES 0.00( 1/ 2) 'O.00( 1/ 2) 0.00-0.00 TRM 471-530 0.00-0.00 0.00-0.00 50 89 0.500 4 v4 LUES (LLD 2 VALUE5 <LLO S. ANALYSIS PERFORMED SR 90 0.100 4 VALUES <LLO 2 VALUES <tLO 4 ANALYSIS PERFORME0 c. Nominal Lower Limit of Detection (LLD) as described in Table 3. b. Mean and ranse based upon detectable measurements only. Traction of detectable measurements at snecified locations is indicated in narentheses (F). A e

TA8LE 29 R2DI@CCTIVITT IU SOILLMOUTH SUF7ALO (FLESH) PCI/G - 0.037 80/G (ORT MEIGHT) NAME OF FACILITT.119UQIAU....... DOCKETNO.52-3[Zg]23............ LOCATION OF FACILITT. 3431LI93..................I13333311............. REPORTING PE5I'3.123}................. TYPE A40 LOWER LIMIT ALL CONTROL-NUMBER OF TCTCL NUMeER OF INDICATOR LOCATIONS LQGAIION.WIIU.UIGdE3I. ANNUAL 5EAN LO;4TIONg NONROUTINE MEAN ( } NAME MEAN (FMI.. MEAN (F) REPORTED OF CNALYSIS DETECTION"...... 845GE{...... QIIIANGE.459.DISEGI195.....R&BGEI.... ...!; 5 G 1.b,,,,,,,,.yggggggggggg,, . EEREGIE12 . 1LLD1.... -GR.55 ALPHA 0.100 4 VALUES <LLD 0.14C 11 2) 6 0.14-0.14 ~CR155 SETA 0.100 20.63( 4/ 4) NICKAJACK RES 21.19( 21 2) '20.37( 2/ 21 6 13.61-26.52 TRM 425-471 18.94-23.44 19.07-21.67 GAM 4A (GELI) 6 C5-137 0.020 0.07( 2/. 4) CHICKAMAUGA RES 0.07C 1/ 2) 0.04(- 1/ 2) 0.07-0.07 TRM 471-530 0.07-0.07 0.04-0.04 E-C 0 NOT ESTA8 9.97( 4/ 4) NICKAJACK RES 10.82C 2/ 2) 5.37( 21 2) 6.61-11.64 TRM 425-471 10.27-11.37 7.40-9.33 C8-214 NOT ESTA8 0.00( .1/ 4) CHICKAMAUGA RES 0.00( 1/ 2) 2 VALUES <LLD 0.00-0.00 TRM 471-530 0.00-0.00 08-212 NOT ESTAB 0.00C 2/ .4) NICKAJACK RES 0.00( 1/ 2) 2 v&Lufs <LLO 0.00-0.00 TRM 425-471 0.00-0.00 SR 83 .0.500 4 VALUES (LLD 2 VALUES <LLO 6 ANALYSIS PERFORMED SR C0 0.100 4 VALUES <LLD 2 VALUES <LLD 6 ANALYSIS PERFORMED E Nominal lower Limit of Detection (LLD) as described in Table 3. c. b. Mean and range based upon detectable measurements only. Fraction of detectable measurements at soecified locations is indicated in parentheses (F). U ~

e e TABLE 30 RADI0 ACTIVITY IN SMALLMOUTH BUFFALO (dMOLE) PCI/G - 0.037 50/G (DRT WEIGnT) wAnt or FACILITV.sggggrau_........_........_____._..._.... DOCKET No..jQ-32Zg}23.......... LOCATIOw 0F FACILITY. 5AtILISB... _.... ....Itt31111E. REPORTING PERIOD.128].............. TYPE AMD' LOWER LIMIT ALL CONTRCL-NUMBER OF TOTAL NUMSER -0F -INDICATOR LOCA{ IONS LQGAIIQM.MIId.UIGUg}I.jy3UAL_ggag.... LOCATIONS NONROUTINE OF ANALYSIS-DETECTION

MEAN (F)

NAME MEAN (F)b PEAN (F) b REPORTED __rtseesssa ..Iv.a1. _____.aasas_... __ oIszance_ama_nInscIlos._...maasst_.__ .__nasse t_. __. sessussensz's._ GROSS ALPMA 0.103 0.20( 11 3) CHICKAMAUGA RES 0.20s 1/ 2) 0.18( 1/ 2) 3 0.20-0.20 TRM 471-530 0.20-0.20 0.10-0.18 - CCC55 BET A 0.100 14.6S( 31 3) CHICKAMAUGA RES 15.29( 2/ 2) 12.54C 2/ 2) 5 12.60-17.97 TRM 471-530 12.60-17.97 11.71-13.36 GAMMA (GELI) 5 C5-137 0.020 0.03C 11 3) CMICK&MAUGA RES 0.03( 11 2) 2 VALUES <tLD 0.03-0.03 TRM 471-530 0.03-0.03 Q ~O NOT ESTA8 5.65( 31 3) CMICKAMAUGA RES 6.06( 2/ 2) 5.38( 2/ 2) 4.49-7.62 TRM 471-530 4.49-7.62 4.98-5.77 PS-214 NOT ESTAB 3 VALUES <LLD 0.02( 1/ 2) 0.02-0.02 C5-212 NOT ESTA5 0.01C 31 3) CHICKAMAUGA RES 0.02( 2/ 2) 0.00C 1/ 2) 0.00-0.02 TRM 471-530 0.01-0.02 0.00-0.00 57 33 0.500 1.17C 1/ 3) CHICKAMAUGA RES 1.17( 1/ 2) 2 VALUES (LLD 5 1.17- -1.17 TRM 471-530 1.17-1.17 53 90 0.100 0.14( 2/ 3) CMICKAMAUGA RES 0.16( 1/ 2) 0.11( 11 2) 5 0.12-0.16 TRM 471-530 0.16-0.16 0.11-0.11 . o. Nominal Lower Limit of Detection (LLD) as described in Table 1, b. Mean and range based unon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (F), .~

TABLE 31 RIDIO CTIVITY I3 SEDIMELT PCI/G - 0.037 80/G (DRY WEIGHT) NAME OF FACILITY.11999I&g........... DOCKET NO. 39:32Zg323............ LOCATION OF FACILITY. 3&g1LIGE.......... ..... 1E3311111............. REPORTING PERIOD 128}................. TYPE A40 L0 DER LIMIT ALL CONTROL NUMBER OF T;TAL NUMSER OF INDICATORLOCA{ IONS'LgG4IIQg.MIIg.31Gug3I.333UAL.31ag.I.. LOCATION ( NONROUTINE OF AWALYSIS DETECT!0g a MEAN (F) NAME 4EAN (F) MEAN (Fg REPORTED easeasssa 166at.... ....ianse....... nzszansa ame.nzas:Ixas.....sasse6.... ...samsn......... esasumisemis.. G4J55 ALPMA 0.353 11.29( 6/ 6) TRN 472.80 13.17( 2/ 23 9.74( 2/ 2) S 7.63-15.21 11.14-15.21 8.06-11.42 GaI55 SETA 0.700 48.43( 6/ 6) TRM 472.80 55.06C 2/ 2) 44.34( 2/ 2) 8 31.70-64.56 45.56-64.56 43.43-45.26 GAMea (GELI) 8 C3-60 0.010 0.27( 61 6) TRM 480.82 0.43( 2/ 2) 0.10( 2/ 2) 0.02-0.60 0.27-0.60 0.06-0.14 C5-137 0.020 1.33( 61 6) TRM 472.80 2.49( 2/ 2) 0.91( 2/ 2) 0.15-3.16 1.83-3.16 0.47-1.36 C0-58 0.010 0.09( 1/ 6) TRM 472.80 0.09C 1/ 2) 2 VALUES (LLD 0.09-0.09 0.09-0.39 E-10 NOT ESTAS 13.56( 6/ 6) TAM 480.82 15.07C 21 2) 13.22( 2/ 2) 10.92-13.23 11.92-18.23 12.45-13.98 94-54 0.013 0.06( 1/ 6) TRM 472.80 0.0$( 1/ 2) 2 VALUES <LLO 0.06-0.06 0.06-0.06 SI-214 0.020 0.95( 61 6) TRM 472.80 1.17( 2/ 23 0.76( 2/ 2) 0.45-1.43 0.91-1.43 0.72-0.80 SI-212 0.100 1.72( 5/ 6) TRM 472.80 2.G4C 2/ 2) 1.11( 2/ 2) 0.70-2.57 1.50-2.57 1.02-1.23 ES-214 NOT ESTAS 1.02( 6/ 6) TRM 472.80 1.20( 21 23 0.85( 2/ 2) 0.48-1.39 1.02-1.39 0.84-0.85 98-212 NOT ESTAS 1.22( 6/ 6) TRM 472.80 1.29C 2/ 2) 1.06( 2/ 2) 0.54-1.83 1.20-1.37 0.95-1.15 R3-226 NOT ESTA8 0.79( 4/ 6) TRM 472.80 0.91( 1/ 2) 0.76C 2/ 2) 0.45-1.27 0.91-0.91 0.72-0.80 40-223 NOT ESTAS 6 VALUES <LLO 0.39C 1/ 2) 0.39-0.39 CO-224 NOT ESTA8 -1.26( 31 6) TRM 472.80 1.33C 1/ 2) 1.12( 2/ 2) 0.65-1.78 1.33-1.33 1.01-1.22 TL-208 0.020 0.47C 6/ 6) TRM 472.80 0.53( 21 2) 0.36C 2/ 2) 0.20-0.66 0.40-0.66 0.32-0.40 AC-228 0.060 1.37C 6/- 6) TRN 472.80 1.55( 2/ 2) 1.10C 2/ 2) 0.64-1.58 1.22-1.88 0.98-1.21 SR 49 1.500 1.96( 2/ 4) TRM 483.4 2.31( 11 2) 3.93( 1/ 2) 8 1.61-2.31 2.31-2.31 3.93-3.93 53 90 0.300 6 VALUES <LLD 2 VALUES <LLD 8 ANALYSIS PERFORMED a. Nominal Iower Limit of Detection (LLD) as described in Table 3. b. Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (F).

TABLE 32 RADI0 ACTIVITY IN SHORE LINE SEDIMENT PCI/G - 0.037 SQ/G (DRY WEIGHT) NAME OF FACILITT 3 QUQIjg.................. ___........... DOCKET NO._30-32Z4328............ LOCATION OF FACILITY..UA51LI95..................I18913311--- --- -..-- REPORTING PERIOD _1283................. g TTPE AND LOWER LIMIT ALL CONTROL NU*SER OF TOTAL NdMSER OF INDICATOR LOCAgIONS LQcAIIQN.WIIU.MIsdg3I.AggU4L.NEAN.g.. LOCATIONS NONROUTINE a NAME MEAN ( } "EAN (F)

EPORTED nIslance_ano.olaccIInv..__.sasse.{. _....sasset.......

esasusts: sis.. 07 ANALYSIS D!TECTION MEAN (F) ..ernroseca __ILLo2_... ......_samst.....__ L% 55 ALPHA NOT ESTAs 8.01( 4/ 4) GCLD POINT 10.62( 2/ 2) 4.34( 2/ 2) ~ 6 4.96-14.22 TRM 478 7.03-14.22 2.86-5.83 CCI55 SETA 0.700 23.30( 4/ 4) GCLD POINT 27.79( 2/ 2) 17.50( 2/ 2) 6 18.05-35.66 TRM 478 19.92-35.66 14.07-20.92 GAnMA (GELI) 6 C0-60 0.010 0.01( 2/ 4) HARRISON FLATS 0.02( 1/ 2) 2 VALUES <LLD 0.01-0.02 TRM 477 0.02-0.02 C5-137 0.020 0.10( 3/ 4) GOLD POINT 0.10( 1/ 2) 0.15( 2/ 2) 0.07-0.11 TRM 478 0.10-0.10 0.03-0.26 K-00 NOT ESTAB 3.96C 41 4) GOLD POINT 3.50( 2/ 23 4.48C 2/ 2) 2.32-7.68 TRM 478 3.32-7.68 3.69-5.26 SI-214 0.020 0.54C 4/ 4) GOLD POINT 0.93( 2/ 2) 0.51( 2/ 2) 0.72-1.15 TRM 478 0.72-1.15 0.36-0.67 BI-212 0.100 0.80( 3/ 43 GCLD POINT 1.00( 1/ 2) 0.66( 2/ 2) 0.66-1.00 TRM 478 1.00-1.00 0.51-0.80 PS-214 NOT ESTAB 0.92( 4/ 4) GCLD POINT 1.02C 2/ 2) 0.57( 2/ 2) 0.81-1.21 TRM 478 0.83-1.21 0.41-0.73 FS-212 0.020 0.96( 4/ 4) GOLO POINT 1.32( 2/ 23 0.58( 2/ 2) 0.58-1.77 - TRM 478 0.88-1.77 0.42-0.74 RA-226 NOT ESTAs 0.74( 3/ 4) HARRIS 0M FLATS 0.74( 2/ 2) 0.51( 2/ 2) 0.72-0.76 TRM 477 0.73-0.76 0.36-0.67 40-223 ucT ESTAS 0.27( 11 4) GOLD POINT 0.27( 1/ 2) 0.12( 1/ 2) 0.27-0.27 TRM 478 0.27-0.27 0.12-0.12 CA-224 NOT ESTAS 0.87( 3/ 43 GOLD POINT 1.05( 1/ 2) 0.62( 2/ 2) 0.64-1.05 TRM'478 1.05-1.05 0.47-0.77 TL-208 0.020 0.32C 4/ 4) GOLD POINT 0.42( 2/ 2) 0.19C 2/ 2) 0.21-0.55 TRM 478 0.30-0.55 0.14-0.25 cc-228 0.060 0.97( 4/ 4) GOLD POINT 1.34( 2/ 2) 0.62( 2/ 2) 0.58-1.80 TRM 478 0.88-1.80 0.44-0.80 PO-234M NOT ESTAB 2.42( 1/ 4) HARRISON PLATS 2.42( 1/ 2) 2 VALUES <LLD 2.42-2.42 Tem 477 2.42-2.42 SR 89 1.500 4 VALUES (LLD 2 VALUES <LLD 6 ANALYS!$ PERFORMED SR 90 0.300-4 VALUES <LLD 2 VALUES <LLD 6 ANALYSIS PERFORMED 6 ANALYSIS PERFORMED

T*BLE 33 RADIOACTIVITT IN CLAM FLESM PCI/G - 0.037 SQ/G (DRY WEIGHT) NAME 05 PACILITT.stSy9Iag....................................... 00C K ET NO. 5 0::32 ZA 323............ L0 CATI 04 0F FACILITT. 3aBIL19B..................I15g:33 e............. R E P O R 7 I 4G P E R I O D.I2j }................. TTPE Amo LodER LIMIT ALL CONTROL NUMBER OF TOTAL WJm8ER OF INDICATORLOCA{ IONS LaGaIIng.WIIU.UIGutsI. ANNUAL.Baa5 LOCATIONS' NONROUTINE OF ANALYSIS DETECTION MEAN (F) NAME MEAN (FE.. ME AN - (5) b REPORTED 8 ..etstossen ILLol.... .......aa m st.b oIsIanst.ang.oIstsnes.....sasset.... ...aamat t....... nessuatermIs.. GROSS ALPHA 0.100 0.23( 4/ 4) TRM 480.82 0.29( 2/ 2) 0.35( 2/ 2) 6 0.15-0.32 0.26-0.32 0.22-0.49 04155 SETA 0.100 5.11C 4/ 4) TRM 480.82 6.26( 2/ 2). 4.77( 2/ 23 6 2.13-6.96 5.56-6.96 3.69-5.$4 Gim44 (GELI) 6 Co-63 0.080 0.20( II 4) .TRM 480.82 0.20( 1/ 2) 2 VALUES <LLD 0.20-0.20 0.20-0.20 (-40 NOT ESTA5 2.30( 3/ 4) TRM 480.82 3.06( 1/ 2) 0.52( 1/ 2). 1.83-3.06 3.06-3.06 0.52-0.52 SI-214 NOT ESTAB 0.80( 3/ 4) TAM 480.82 1.38( II 2) 0.32( 2/ 2) 0.45-1.35 1.38-1.38 0.13-0.51 88-214 MOT ESTA5 0.76( 3/ 4) TRM 480.82 1.52( 1/ 2) 0.34( 2/ 2) 0.35-1.52 1.52-1.52 0.17-0.51 95-212 NOT ESTAS 0.09( 2/ 4) TRM 480.82 0.11C 1/ 2) 0.00( 1/ 2) 0.07-0.11 0.11-0.11 0.00-0.00 4A-220 NOT ESTA5 0.57C 1/ 4) TRM 483.4 0.57C 1/ 2) 2 VALUES <LL3 0.57 ' O.57 0.57-0.57 TL-205 NOT ESTAB 0.34( 1/ 4) TRM 480.82 0.04C 1/ 2) 0.02( 1/. 2) 0.04-0.04 0.04-3.04 0.02-0.02 AC-228 NOT ESTAB 0.07( 1/ 4) TRM 483.4 0.07( 1/ 2) 0.10( 2/ 2) O.07-0.07 0.07-0.07 0.06-0.14 e. Nominal Lower Limit of Detection (LLD) as described in Table 3. b. Nan and range based upon detectable measurements only. Fraction of detectable measurements at sucified locations is indicated in parentheses (F). U

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ese s at 4e o e e o e o e o e o e e o e e e o e e o e en o e . t#4. O t e* O 4 4 ' O O O O D O O O O O O O O O O O O O 4 > c= ea 0 8 1 23 M t. .J gt . 3 O 4 ,= 0 x e = e. H> 'H l

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O. at M se 30 O O to O O O en n O O O O wD~ IL E .J IL M e40 O e* 4 en O en at trl N e O-O O :9 O OOON P* O .O e= O >= 0 0 O O O .,,e I y tL. W. eu a e e o ut e e o e#t e o e e e WO tu >=.J O O O us O .O O us O-O O in== ag

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3 ua in4 M as R O O 4 H H yh' 30 J 9 O. O H E 2 g 4 9= . 4 e 50 ' @ l* at er 40 u tu evt a s2 O OeMQW H .J FE Mta4E as .J ag g g at 3 > 3 86 eu. C 3.n m.J w O tu at G 4 m w 4 N 4 N ,0 ao en f e6 8 2 GL4 O e= e-

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N O N > as as Mt3 en as e-O N N N N N-N N 06 O t= to useo M. Y S 4 -t I e 0 0 0 g art om O4L&40 0 E O 9 H ee en. an as .J u >+ 0 9W W as u - at ap en n O tr 6-as fr 9A en en SG O

Figure 10 57 R ESER VOIR MONITORING NETWORK SEQUOYAH NUCLE AR PL ANT DAYTON j (MILE SO3.0,OAYTON) ) i MILE 497 MILE 496.5 l l SODDY (LITTLE SOD 0Y CREEK MILE 0.5* S000Y-DAISV) DAISY SEQUOYAH MILE 485 NUCLEAR PLANT MILE 483 4 MILE 480B MILE 478 CHICKAMAUGA MILE 477 (MILE 470.5, E. I. DUPONT) l NILE 4 73.2 l MILE 472.8 1 I (MILE 465.3, CHATTANOOGA) h SHORELINE SEDIMENT

. AUTOMATIC WATER SAMPLER (MILE).DRINMINC WATER SOURCE O

5 H H MILES

58 t i I l I l t l 1 l I m t 2 I cb ~n uno U <,.a l $)$$ e ~ DUEx E l O 42Es 3 Bama : r-l <owm o g E' .i l I o ~ n. ~ a We W-Ieuoiae2adoaad awe l Me C I ~ suoiavas Io22uo3 ~ suoT3U3S acanaTPuy 1/T3d

~. 59 I Quality Control A' quality' control program has been established with the Tennessee i Department of Public Health Radiological Laboratory and the Eastern Environ-mental Radiation Facility, Environmental Protection Agency, Montgomery, Alabama. Samples. of air, water, milk, fish, and soil collected around nuclear plants are forwarded to these laboratories for analysis, and results are exchanged for comparison. Data Analysis i Data measured at'the control stations for each medium were averaged for each sampling period. In order to describe the distribution of' control i station data, a mean, standard deviation, and 3-sigma limits were calculated. t We can expect that background concentrations would be distributed within these limits. This provides the basis for comparing control and indicator data. If the indicator data fall within the 3-sigma limits defined for control data, we conclude that the indicator' data were not significantly affected by the nuclear plant. If the data do not fall within the limits, we will perform further L analyses to determine if the difference is attributable to the nuclear plant. Conclusions 14 vast majority of the indicator station data was found to be within j the distribution defined by the control station data. The data' analysis ~ software identified concentrations slightly exceeding the limits of the control station data for.a small number of radionuclides in samples for indicator stations. Many of these values may be discounted because the error reported by the analysis program'was greater than the calculated concentration..The i remaining isolated, elevated concentrations may be the result of fallout, fluctuations in the existing environment, computer program artifacts, or analytical errors. The same type of isolated high values occurred in the l [ control station' data and may be attributed to the same sources. i t Dose estimates were made from concentrations of-radioactivity found. i l in samples of environmental media'such as air, milk, drinking water, and fish. Doses-estimated for persons at the indicator locations were essentially identical to those determined for persons at control locations. Greater than 99 percent of those' doses were contributed by the naturally occurring'radionuclide potassium-40, l .E 'and by strontium-90 and cesium-137 which are.long-lived radioisotopes.found in 1 fallout from nuclear weapons testing conducted ~over the last several years. i

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60 From the above analysis of the_ data and from the trend plots pre-sented earlier, it is concluded that there were no significant increases in the exposure to members.of the general public attributable to the operation of SQN. Indications of the presence of small quantities of fission products have been seen in aquatic media _such as Asiatic class and shoreline sediment. The levels measured were extremely low, for example near the nominal lower limits of detection, and were well below the reporting levels required by the NRC. No increases of radioactivity have been seen in water samples. These media will be monitored closely for indications of increases. 1 7 e -...}}

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