ML19321B333

Radiological Regional Environ Monitoring Program Rept 15, 1979

ML19321B333
Person / Time
Site:	Peach Bottom
Issue date:	05/31/1980
From:	RADIATION MANAGEMENT CORP. (RMC)
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ML19321B330	List: ML19321B329 ML19321B332 ML19321B333
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NUDOCS 8007310420
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{{#Wiki_filter:O 1 PEACH BOTTOM ATOMIC POWER STATION Radiological Regional Environmental Monitoring Program Report #15 January 1,1979 Through December 31,1979 Prepared For ] PHILADELPHIA ELECTRIC COMPANY By RADIATION MANAGEMENT CORPORATION University City Science Center 35C8 Market Street 4 Philadelphia, Pa.19104 May 1980 8007310@O }

PEACH BOTTOM AT0r4IC POWER STATI0ft Radiological Regional Environmental ikmitoring Program Report # 15 January 1,1979 Through December 31, 1979 Prepared For PHILAD_uPHIA ELECTRIC C0ftPAflY By RADIATI0ft f4Af1AGEf1EflT CORPORAT10ft University City Science Center 3508 ftarket Street Philadelphia, Pa.19104 thy 1980

TABLE OF CONTENTS PAGE I. INTRODUCTION A. Program Objectives 1 B. Program Implementation 2 II. PMC PROGRAM DESCRIPTION A. Sample Collection & TLD Placement Procedures 3 B. Program Changes 4 C. Analyses Performed 5 D. Exceptions to the Program 5 E. Program Changes in 1980 6 III. RESULTS AND DISCUSSION A. Data Interpretation & Statistical Analysi-7 B. Discussion of Results 8 1. Surface Water 8 2. Cischarge Water 9 3. Well Water 10 4. Preci pi tation 10 5. Air Particulates 11 6. Mil k 11 7. Soil 12 8. Ambient Gamna Radiation 13 IV. SijMMARY AND CONCLUSIONS 15 V. TABLES VI. FIGURES

LIST OF TABLES TABLES I. RMC Station Designation and Sample Identifis stion System II. RitC Sample Collection and Analysis Program III. Summary of Analysis Performed on Samples Collected During 1979 IV. Summary of Radioactivity Concentrations V. Summary of Gamna Spec rometry VI. Summary of Ambient Dor imetry Program 1-VII. Analytical Data for Surface Water Grab Samples j VIII. Analytical Data for Surface Water Composite Samples IX. Concentrations of Gama Emitters in Surface Water X. Analytical Data for Discharge Water Grab Samples 4 XI. Analytical Data for Discharge Water Composite Samples -XII. Concentrations of Gamma Emitters in Discharge Water XIII. Analytical Data for Well Water Samples 3 XIV. 1979 Mean Concentration of Aqueous Tritium in Well Water by Quarter XV. Analytical Data for Precipitation Samples XVI. Concentrations o# Gama Emitters in Precipitation (Total Sample) XVII. Analytical Data 'or Air Particulate Samples XVIII. Concentrations of Gama Emitters in Air Particulates XIX. Analytical Data for Milk Samples 4 XX. 1979 Mean Concentration of Iodine-131 in Milk by Week XXI. Concentrations of Gamma Emitters in Milk I XXII. Analytical Data' for Soil Samples XXIII. Concentrations of Gam.a Emitters in Soil XXIV. Monthly TLD Resul ts l l: ii ~

LIST OF TABLES (CONT.) TABLE XXV. Quarterly TLD Resul ts XXVI. Mean Monthly, and Quarterly TLD Results for the Site Boundary, Middle, and Outer Rings

XXVII, Gamma Spectrometry of All Media - Typical Minimum Detectable Levels of Nuclides Searched for but not Found.

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LIST OF FIGURES FIGURE .1 Environmental Sampling Stations on or near Peach Bottom lite 2 Environmental Sampling Stations at Intermediate Distances Fro *a Peach Bottom Site 3-TLD Stations on Peach Bottom Site 4-TLD. Stations at Intermediate Distances from Peach Bottom Site 5 TLD Stations at Remote Distances from Peach Bottom Site 6 A Comparison of Aqueous Tritium Concentrations in Surface Water at Conowingo and Holtwood Dams (Total Sample-Composite) 7 A Comparison of Aqueous Tritium Concentrations in Surface Water at Conowingo and Holtwood Dams (Total Sample-Composite) 8 A Comparison of Gross Beta Concentrations in Surface Water at Conowingo and Holtwood Dams (Solublu Fraction-Gra b) 9 A Comparison of Gross Beta Concentrations ir Surface Water at Conowingo and Hol twood Dams (Insoluble Frac; ion-Grab) 10 A Comparison of Aqueous Tritium Concentrations in We ter at Peach Bottom Units #2 and #3 Intake and Discharge (Total Sample-Composite) 11 A Comparison of Gross Eeta Concentrations in Water at Peach Bottom Units #2 and #3 Intake and Discharge (Soluble Fraction-Composite) 12 A Comparison of Gross Beta Concentrations in Water at Peach Bottom Units #2 and #3 Intake and Discharge (Insoluble Fraction-Composite) -13 _ A ' Comparison of Average Aqueous Tritium Concentrations in Well Water at On-Site Wells, Site Area Wells, and Distant Wells (Total Sample-Grab) 14 A Comparison of Average Iodine-131 Concentrations in Milk at Near, Intarmediate and Distant Farms (Total Sample) 15 A Comparison of Average Strontium-90 Concentrations in Top One' Inch at On-Site Soil and-Distant Soil Locations 16 A Comparison of. Average Strontium-90 Concentrations in Bottom Cut at On-Site Soil and Distant Soil Locations ~17 A Comparison of Average Cs-137 Concentrations in Top One Inch at On-Site Soil Locations and Distant Soil Locations 18 A Comparison of Average Cs-137 Concentrations in Bottom Cut at On-Site Soil Locations and Distant Soil Locations ~iv

LIST OF FIGURES (CONT.) FIGURE 19 A Comparison of Average Monthly TLD Results at the Site Boundary, Middle, and Outer Rings 20 A Comparison of Average Quarterly TLD Results at the Site Boundary, Middle, and Outer Rings l l 9

I t i l i e t i j J

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I i I. IllTRODUCTION i I l } I i l I 1 I

+ I. INTRODUCTION Radiation Management Corporation (RMC) began conducting a radiological environmental monitoring program in September 1970 for the Philadelphia Electric Company in connection with the Peach Bottom Atomic Power Station (PBAPS) located in Peach Bottom Township, York County, Pennsylvania. This RMC program compliments an existing program being conducted by others which has been carried out since March 1960 PBAPS is located along the Susquehanna River, between Holtwood and Concwingo Dams which are about 14 miles apart. The pond created by Conowingo Dam is called Conowingo Pond. The initial loading of fuel into Peach Bottom Unit #1, a 40 tGe (Net) high temperature gas-cooled reactor, was started on February 5,1966, and initial _ criticality was achieved March 3,1966. Final shutdown of Peach Bottom Unit #1 was on October 31, 1974 Peach Bottom Unit #2 and #3 are boiling water reactors each with a power output of approxi-mately 1050 MWe (Net). The first fuel was loaded into Unit e2 on August 9,1973, and criticality was first achieved on September 16, 1973. The fuel was loaded -into Unit #3 on July 5,1974 and criticality was first achieved on August 7, 1974 Peach Bottom Unit #2 first reached full power on June 16, 1974. Peach Bottom Unit #3 first reached full pcwer on December 21, 1974 j Results of the RMC portion of the overall regional radiological environmental monitoring program have been reported in semi-annual and annual reports. Semi-annual reports were discontinued after 1975. This report contains data for sam-ples representing the period January 1,1979 through December 31, 1979. A special preoperational report (I) for Peach Bottom Units *2 and #3 has been-issued previously which summarizes results of all analyses performed by RMC on samples collected from the start of the RMC portion of the overall program through August 8,1973, the day before fuel was first loaded into Peach Bottom Unit #2. A. PROGRAM OBJECTIVES 1. Identi fy, measure, and evaluate existing radionuclides in the environs of the Peach Bottom site and any fluctu-ations in radioactivity levels which may occur. 2. Monitor and evaluate ambient radiation levels. 3. Determine, witnir the scope of the program, any measurable quantity of radioactivity introduced to the environment by the operation of the Peach Bottom Atomic Power Station. 4 Compliment othar existing radiological environmental monitoring programs at Peach Bottom Atomic Power Station. 1 4 1~

B. PROGRAM IMPLEMENTATION In order to achieve these objectives, Radiation Management Corporation performed the following analyses on samples collected during the period of this report. 1. Measured and evaluated concentrations of aqueous tritium in surface water, discharge water, well uater, and milk. 2. Measured and evaluated concentrations of alpha emitters in surface water. 3. Measured and evaluated concentrations of beta emitters in surface water, discharge water, well water, precipitation and air particulates. 4 Identified, measured and evaluated gamma emitting radionuclides in surface water, discharge water, milk, precipitation, well water, air particulates and soil. 5. Measured and evaluated concentrations of I-131 in milk. 6. Measured and evaluated concentrations of Sr-89 and Sr-90 in soil and milk. 7. Measured ambient radiation levels in the environment and evaluated the variations with time and location with re-spect to the site. I t l l l I l 2

i t i E II. RMC PROGRAM DESCRIPTI0il L_' } I i

II. RMC PROGRAM DESCRIPTION A. SAMPLE COLLECTION AND TLD PLACEMEP - PROCEDURES The program being conducted by RMC is descri5ed in Tables I and II and Figures 1-5. 1. Sample Collection a. Water (except precipitation) All samples were collected in new polyethylene bottles. All persons involved in sample collection and handling were ad-vised not to wear tritium luminous dial watches in order to avoid possible cross contamination from that source. Sample containers were rinsed at least twice with the water to be sampled before collection. All water samples were grab samples except those collected at s tations 1LL,1Pf t, 61 and 4L. Weekly samples were taken from a tank which continually collects a sample at these four locations. The weekly samples were composited into a monthly sample for analysis. Collection methods are described in more detail in table II, Section V. b. Precipitation Precipitation was collected in an apparatus consisting of a new polyethylene bottle with a plastic funnel 8 inches in diameter. The bottle was replaced monthly and the sample bottle was shipped to RMC for analysis. The amount of precipitation was recorced continuously by a separate rain gauge at station 1 A. c. Air Particulates Air particulate samples were obtained using a vacuum sampler and glass fiber filters, approximately 2" in diameter. The filter was replaced weekly and sent to RMC for analysis. The vacuum sampler was run continuously at approximately 1 cubic foot per ninute. d. Mil k Pilk samples were collected in new polyethylene bottles from the bulk tank at each farm and shipped immediately. No preservative was added. e. Soil Soil samples consis ting af seven cores, 2" in diameter and 6" deep were collected from a 50 X 50 ft. area at each sampling location. Top soil (upper 1 inch) and bottom soil (lower 5 inches) were separated, then sealed in sep-arate plastic bags, and shipped to PMC. 3

2. TLD Placement A system using thermoluminescent dosimeters (TLDs) was usec to measure the direct radiation levels in the PBAPS environment. The TLD stations were placed on and around the Peach Bottom site using the "three ring concept". Three on-site stations were not included in any of the three rings and were called plant-complex stations. a. A site _Jundary ring near and within the site perimeter, representing fencepost doses, i.e., at locations where the doses are greater than maximum annual off-site doses from plant releases; b. A middle ring extending to approximately 10 miles from the site, designed to measure possible exposures to close-in popul a tion ; c. An outer ring extending from approximately 10 to about 60 miles from the site, and considered not to be affected by station releases; d. The specific location of each station was dete mined by the following criteria: (1) The presence of relatively densely populated areas; (2) Areas where estimated annual dose from the station, if any, would be more significant, calculated from site meteorological data taking into account distance and elevation for each of the 36 ten-degree sectors around the site; (3) On hills and (where practical) within sight of the stack, and free from local obs tructions ; (4) Near the closest house to the stack in the prevailing downwind direction. Each TLD set (4 TLDs per set) was placed in a sealed poly-I e. ethylene package to verify the integrity of the dosimeters l when collected, iwo packages were kept in a locked formica l " birdhouse" or poly 0thylene jar, about six feet above the ground or supporting arface at each location. At each sta-tion one package was exchanged for neasurement on a monthly schedule, and one on a quarterly schedule. B. PROGRAF 4 CHANGES Effective with samples cnllected in 1979, the following changes have been made. All of the changes are in accordance with cur-rent NRC guidelines for monitoring programs. None of these changes involve the PBAPS technical specification program. 1. Sanpl ing Discharge Water - Sampling at station IT (Peach Bottom Discharge Canal) a. was discontinued after the December 1978 sample because the new composite sampler at station Ifift is a better indicator of PBAPS discharge woter. 4

b. Well Water - The frequency of sampling at stations 10 and IV (Peach Bottom Site) was changed from monthly to quarterly beginning in January 1979 be-cause there has been no detectable short term variation on radioactivity levels from PB APS operation. 2. Analyses a. Tritium - Analysis of precipitation, fish and vegetation was discontinued beginning in 1979 because there has been no detectable effect on tritium activity in precipitation, fish or vegetation as a result of PBAPS opera-tion. Also analysis of milk was reduced from eleven to four farms quarterly, beginning in 1979. b. Gross Alpha - This analysis was discontinued at the end of 1978 on soil s a mpl es. Alpha activity has not changed since the pre-operational period and can all be att. ibuted to naturally occurring Ra and Th. C. Af1ALYSES PERFOR!!ED The schedule of analyses performed by Rf1C is listed by sample type in table II. This schedule was followed except where noted below. Table III lists the type and number of analyses performed during this period by sample type and station location. Methods used in performing these analyses can be found in Appendix A of PBAPS Radiological Environmental l'onitoring Program Report 212, January 1,1976 - December 31, 1976. D. EXCEPTI0flS TO THE PROGRAF 1 1. Surface water samples were not taken from station 61 from 2/8 - 2/16 due to a pump mai function. 2. Surface water samples were not taken from station 4L from 2/3 - 2/23 and 12/8 - 12/22 due to a pump nal function. 3. Surface water samples were not taken at station ILL from 1/19 - 1/29 and 3/9 - 3/16 due to a pump mal function. A sanple collected from 8/31 - 9/7 was los t. 4. Discharge water samples were not collected at station If<f1 from 1/12 - 1/22 and 2/2 - 5/3 due to a pump mal function. 5. f'o Sr-89 and Sr-90 results were available for milk samples taken at farm J on 8/6 and 11/12 due to analytical error. 6. I-131 esults were not available for milk samples taken at farm H on 7/23 and farm h on 12/17 due to analytical error. j l 7. TLDs were stolen from station 1H in flarch and 1st quarter; from station IJ in f4ay; from station 19 in the fourth quarter and from station 22 in April, August, 2nd and 3rd quarter. January TLDs at station IJ were buried in snow. 8. Weekly I-131 analysis of surface water stations 4L and 6I comrenced tne week of 10/21 to 10/28 and continued through 12/8. 5

E. PROGRAF 1 CHANGES IN 1980 1. Milk - Farm H went out of business. It has been replaced in the sampling program with a new dairy (Farm 0), located west of Conowingo Pond. 2. Air Iodine - Effective in March,1980, air iodine will be continuously sampled and analyzed weekly at eight locations. 3. Air Particulate - Effective in February,1980, analysis of samples from station 4A will be transferred from Interex Corporation to RMC. Gross beta and gamma spectrum analyses will be perforned on this sample. J. Surface Water - Stations 4L and 6I collected the last week of each nonth will be analyzed for I-131. 5. TLD - Additional TLD stations will be implemented in 1980. 6

A I III. RESULTS AND DISCUSSION r l 4 i

III. RESULTS Ah) DISCUSSION A. DATA INTERPRETATION AND STATISTICAL ANALYSIS Several factors are important in the interpretation of the data. In order to avoid undue repetition in the discussion which follows, these factors are described below. 1. Grab Sampling Grab sampling is a useful and acceptable procedure for taking envi-ronmental samples of a medium in which the concentration of radio-nuclides is expected to vary slowly with time or where iritermittent sampling is deemed sufficient to establish the radiological character-istics of the medium. This method, however, is only representative of the sampled medium for that specific location and instant of time. As a result, variation in the radionuclide concentrations of the samples will normally occur. Since these variations will tend to counterbalance one another, the extraction of averages based upon repetitive grab samples is valid. 2. Minimum Detectable Levels (MDL) It is characteristic of environmental nonitoring ddta that many results cccur at or below the specified detection level. Formal statistical error analysis of groups of such data is difficult. Pragnatic approaches to the problem include counting the detection level entries as zero, as hal f the detection level value, or as full detection level value. Fo r reporting and calculation of averages, any result occurring at or below the minimum detectable level is considered to be at that level. Averages obtained using this method are therefore biased high. 3. Standard Deviation of Analytical Results Within the data tables an approximate 955 (2 sigma) confidence interval is supplied for those data points at and above the minimum detectable l evel. These intervals represent the range of values into which 95% of repeated counts of the sample would fall. 4 Table Means and Standard Deviations Results for each type of sample were grouped according to the analysis per fo rmed. Peans and standard deviaticns of these resu'ts were calcu-lated. These standard deviations represent the variability of measured resul ts for di fferent sampl es rather than sini-ar alysis uncertainty. For these calculations, all results Lelow the MCL were considered to be at the MDL. As a result, the means are biased high, and the standard deviations are biased low. 7

i 4 B. DISCUSSION OF RESULTS Results are summarized in brief form in tables IV, V and Vi (Section V). Tables of results for individual sample types and analyses per-formed can be found in Section V, tables VII to XXVII. Graphical pre-sentations: of results can be found in Section VI. 1. Surface Water ' Samples were taken from eight stations on a monthly schedule. Three stations (1LL, 61 and 4L) were continuous composite sam-ples and five (1Q, 4F, 4G, 6A and 13A) were grab sanples. Station 13B was not sampled in 1979 because Chester Water Authority did not pump water from Connwingo Pond. Of these stations, six could be affected by-releases from Peach Bottom Atomic Power Station. The remaining stations (6A and 61) were above Holtwood Dam and, therefore, could not be affected by plant discharges. (Refer to figure 1 and 2 Section VI, for station locations). The following analyses were performed on surface water samples. 1 a. Tri tium ] l Total samples from seven stations were analyzed for concentrations of aqueous tritium. Samples from stations ILL,1Q, 4L and 6I were i analyzed on a monthly basis, while samples from stations 4F, 6A and 13A were composited monthly into a quarterly sample. Results of this analysis of surface water samples can be found in tables VII - 1 VIII, section V. The concentrations detected were well within the l range found during the Peach Bottom Units *2 and #3 preoperational period (1). Graphical comparisons of the unaffected stations (6A and 61) above Holtwood Dam with potentially affected stations (AF and 4L) at Conowingo Dam showed no difference in concentrations, j indicating no detectable addition of tritium to Conowingo Pond from j the operation of PSAPS (fig 6-7). b. Gross. Alpha Samples from four stations (4F, 4L, 6I and 6A) were analyzed for i gross alpha concentrations in the soluble and insoluble fractions. Results of gross alpha analysis in surface water samples can be found in tables VII-VIII, section V. Results at all locations were generally at or below the minimum detectable level in the soluble fraction. With a few exceptions, results of the insoluble fraction were below the MDL. Positive values observed at station 4F and 6I can be attributed to the presence of sediment, a reservoir of fall- - out and natural alpha emitters. c. Gross Beta i Samples from all eight stations, were analyzed for concentrations of gross beta in the soluble and insoluble fractions. Results of gross beta analysis in surface water samples can be found in tables VII-VIII, section V. The concentrations detected in the soluble fraction were well within the range observed during the preoperational period for Units 42 and #3. (1) Two of the twalve -l samples taken at station 4F showed significant activity in the in-soluble fraction. Since this station is taken near the bottom of 8

Conowingo Pond, sediment and debris should contribute to the gross beta activity in samples from this location. Similar levels were detected during the preoperational period at this station. l1) A graphical comparison of two Conowingo Dam stations (4F and 4G) with one Holtwood Dam station (6A) shows the results of the soluble fraction to be generally the same for all three locations. While in the insoluble fraction, the results differ significantly (figures 8 & 9, sec. VI). This difference can be attributed to the presence of varying amounts of sediment in samples taken at different depths. Samples from station 4F, with the highest concentrations of beta emit-ters in tne insoluble fraction, contains the highest amount of sediment. Samples from stations 6A and 4G indicated lesser concentrations of beta emitters and sediment. e. Gamma Spectrometry Samples from all eight stations, were analyzed for gama-emitting nuclides by gama spectrometry. Results of gama spectrometry on surface water sam-pies can be found in table IX, section V. The only nuclide detected was naturally-occurring K-40 in samples collected at five of the eight loca-tions. f. Iodine-131 Samples from two stations (4L and 61) were analyzed weekly for concentra-tions of I-131, commencing the week of 10/21 to 10/28. Results of I-131 analysis of surface water samples can be found in Table VIII, sec. V. All results were below the minimum detectable level. 2. Discharge Water Samples were taken from two stations (IM and IMft) on a monthly schedule (Refer to figure 1, section VI, for station locations). The following analyses were performed on discharge water samples, a. Tritium Total samples from both stations were analyzed for concentrations of aqueous tritium on a nonthly basis. Results of tritium analysis in discharge water samples can be found in tables X-XI, s ection V. The concentrations detected were well within the range found during the peach Bottom Units d2 and 43 preoperational period (1). A graphical comparison of results for composite surface water and discharge water samples showed no significant difference in concentrations of aquecus tritium (figure 10, sec. VI). b. Gross Beta Samples from both stations were analyzed for gross beta concentrations in the soluble and 'nsoluble fractions. Results of these analyses in discharge water samples '.an be found in tables X-XI, section 7. The concentrations de-tected wem well within the range found during the Peach Bottom Units 42 and =3 preoperational period (1). Graphical comparisons of results for composi te surfac.s and discharge water samples showed no significant di fferences in con-centration in either the soluble or the insoluble iractions (Figure 11 and 12, sec. VI). 9

c. Gamma Spectrometry Samples from both stations were analyzed for gamma-emitting nuclides by spectrometry. Results.of gama spectrometric analysis of samples from all stations are given in table XII, section V. The only nuclide detected was naturally-occurring K-40 in three of 24 samples. 3. Well Water Samples were taken from four stations on a quarterly schedule. Two stations (1U and IV) were located within the site area (for station location, see Figure 1, section VI). The other stations were located about one mile (station 40) and about 10 miles (station 7) from the pl a nt. These station locations are shown in figures 1 and 2, section VI. ' The following analyses were performed on well water samples, a. Tritium Total samples from all four stations were analyzed for aqueous tritium concentrations. Results of tritium analysis of well water samples can be found in tables XIII-XIV, section V. Results of all samples were well within the range found during i.he Peach Bottom Units a2 and e3 preoperational period (1). A graphical comparison of the distant, site-area, and on-site wells showed that tritium levels have been gradually decreasing with time due to the cessation of routine atmospheric nuclear weapons tes ting ( figure 13, sec. VI). b. Gross Beta Samples from all four stations were analyzed for gross beta concentrations in the soluble and insoluble fractions. Resul ts of gross beta analysis on well water samples can be found in table XIII, section V. The concentrations detected were well within the range found during the Peach Bottom Units #2 and d3 preoperational period (1). 4 Precipitation Precipitation was collected from two stations on a monthly schedule. Station 1A is located at the on-site Peach Botton Weather Station #1. Station 8, located in Colora, MD., is about 10 miles from the plant site (for station locations, see Figure 1, section VI). The following analyses were per-formed on precipitation samples. -a. Gross Beta Monthly samples were analyzed for gross beta concentrations in the total sampl e. Results of gross beta analysis in precipita-tion samples can be found in table XV, section V. Concentrations detected were well within the range found during the Peach Bottom . Units =2 and #3 preoperational period (1). b. Gamma Spectrometry Monthly samples were analyzed for gamma-emitting nuclides by spectrometry of the total sample. Results of gama ' spectro-10

metric analysis of samples from both stations are given in table XVI, section V. The only nuclides detected were naturally-occurring K-40 and Be-7. 5. Air Particulates Continuous air particulate samples were taken from one station (1Z) located at the on-site Peach Bottom Weather Statioil dl (for station location, see Figure 1, section VI). The following analyses were performed on air particulate samples. a. Gross Beta Weekly samples were analyzed for concentrations of gross beta activity. Results of gross beta analysis of air particulate samples can be found in table XVII, section V. Results observed were similar to levels observed in previous years. (2) b. Gamma Spectrometry Monthly composite samples were analyzed by spectrometry for gamma-emitting nucl ides. Results of gama spectrometric analysis are given in table XVIII, section V. Be-7 was de-tected in all 12 samples and is thi result of cosmic ray acti-vity. Other nuclides found (Cs-137, fib-95 and Ce-144) were similiar to those detected in previous years. Concentra tions observed can be attributed to world-wide fallout since similar concentrations have been detected throughout the Middle Atlantic Region. 6. Milk Milk was sampled at eleven farms; three (G, H, J) were desig-nated as "near farms" (within 2 miles of PB APS); four (D, L, M, ft) were designated as " intermediate farrs" (3-5 miles from PB APS); and four ( A, B, C, and E) were designated as " distant farms" (>5 miles from PBAPS). The following analyses were per-formed on milk samples. a. Tritium Milk from four farms was analyzed for tritium concentrations in the aqueous fraction on a quarterly basis. Results of tritium determinations in milk samples can be found in table XIX, section V. Concentrations detected were generally within the range found during the Peach Bottom Units #2 and a3 preoperational period (1). b. Iodine-131 Milk from eight farms ( A, B, C, D, G, H, J, it) near Peach Bottom was analyzed for concentrations of I-131, monthly in January and February. Weekly sampling was resumed during the second week of March and continued through the third week of December. Three 11

= ~ 4 additional farms (L, M, E) were sampled and analyzed quarterly for I-131. Results of I-131 analysis can be found in tables XIX-XX, 2 - section V and figure 14, section VI. Iodine-131 activity was detected in milk samples taken at all farms -except B, 0 and li on April 2; on April 9 at farms C and J; on April 23 at all farms except B E, L and fl; and on April 30 at farms A, B, C, H, and J. These concentrations were attributed to Three Mile Is-land, since near and distant farms showed similar levels. Samples taken June 18 at farms D, H, J and f1 showed concentrations of I-131 ranging from.09.65 pCi/1. Concentrations at all farms dropped to near or below the detection limit of.05 pCi/l the following week. Beginning September 24, trace amounts of I-131 were detected in sam- .ples taken at near farms G, H and J. All values dropped to below the detection limit by i;oventer 5. The concentrations detected ranged from.08 pCi/l to 0.5 pCi/l and averaged 0.2:0.3 pCi/l for the six week period at the three farms. The maximum hypothetical dose to an infant's thyroid from drinking 0.9 liter per day of this milk was calculated to be 0.11 mrem. This calculation was done using the assumptions of USilRC Regulatory Guide 1.109, Rev.1, Oct. 1977. c. Sr-89 5 Sr-90 i One milk sample collected at farm J in each quarter was analyzed for Sr-89 and Sr-90. Results can be found in table XIX, section V. Only samples taken in the first two quarters were reported due to analytical error, d. Gamma Spectrometry One_ milk sample collected at farm J in each quarter was analyzed by gama spectrometry. Results can be found in table XXI, section V. fluclides detected were naturally-occurring K-40, and Cs-137 which is cortronly found in milk from world-wide fallout. 7. Soil Samples were taken at three locations, one on-site station (2) (for station location, see figure 1, section VI) and two (3A . and 5) about four miles away from PBAPS (for station locations, see figure 2, section VI). The area at station 2 is heavily wooded with rock outcroppings. The soil at this location would be expected to contain substantial humus from the accumulation of natural vegetation debris. Station 3A is covered only with grass. Station 5 is a cocbination of grass and cultivated land. The following analyses were performed on soil samples. a. - Strontium-89 and Strontium-90 Samples from all stations were analyzed for Sr-89 and Sr-90 con- -~ entrations in the. top one inch and bottom five inches separately. c Results of Sr-90 ar d Sr-89 analysis in soil samples can be found in table XXII, section V. Concentrations of Sr-90 detected were well within the range found during the PBAPS Units d2 and 43 pre- _t. 12 l 1

operational period (1). Concentrations of Sr-89 were at or near the minimum detectable level in all samples. Graphical compari-sons of Sr-90 in the top one inch and bottom cut showed no signi-ficant differences between on-site and distant locations (figure 15 & 16, sec. VI). b. Gamma Spectrometry Samples from all stations were analyzed for gama-emitting nuclides I by Ge(Li) gamma spectrometry (table XXIII, section V). tJuclides 1 identified were generally the same as those found during the PBAPS Units #2 and 83 preoperational period with most at the same or lower concentrations (1). Some naturally-occurring nuclides were found ( K-40, Th-232, Ra-226). Small concentrations of Cs-137 were detected in eleven of twelve samples. The 30 year hal f-life and biological assimilation of Cs-137 accounts for the continued appearance of this nuclide in soil samples many years after atmospheric testing of nuclear wea po ns. Differences in concentration of Cs-137 in the top one-inch at one on-site location can be attributed to the accumulation of vege- { tative debris at this location (see Figures 17 and 18, sec. VI). Since no Cs-134 or other plant related nuclides were found in any of these sam-ples, the Cs-137 can be attributed to worldwide fallout. ,i ( 8. Ambient Gama Radiation Ambient gamma radiation levels were measured with calcium sul fate: Tm thermoluminescent dosimeters. Eleven stations 1B, IC, ID, IE, IF, IG,1H, IJ, IL, Ifl and 2) were located around the site boundary and designated as the site boundary ring for comparison purposes (for station locations, see figure 3, section VI). Fi fteen stations (3A, 4K, 5, 6B,14,15,17, 22, 23, j 26, 27, 31, 32, 33A and 38) were located within a 10-mile radius of the site +and designated as the middle ring (for station locations, see figure 4, section VI). Seven stations (12B,16,18,19, 20, 21B and

24) were located from 10 to 60 miles from the site and designated as the outer ring (for station locations, see figure 5, section "I).

Three stations (IA, II,1K) located within the plant complex constitute a fourth group called plant-complex stations since they could be more directly affected by plant activities and do not represent doses to the public (for station location, see Figure 3, section VI). Res ul ts of TLD measurements can be found in tables XXIV-XXVI, section V. The annual average of monthly, and quarterly, radiation levels were well [ within the range found during the Peach Bottom Units #2 and 43 preopera-i tional period (1). Graphical comparisons of the site-boundary, middle and outer rings on monthly and quarterly readings showed no differences in am-bient radiation levels with distan:e from PBAPS, indicating no measurable 4 station contribution (table XXVI, section V, figures 19-20, section VI). Station 1K, located about 100 feet from the turbine building, in a controlled area, indicated dose levels generally rising with power levels. Stations 1A and -1I, in the predominant downwind direction, did not show-any increased levels so that it is improbable that the values at 1K were due to effluent ~ e f fects. The increased dose levels measured at 1K are attributed to direct and scattered radiation from Peach Bottom Units d2 and 43. - A review of the September monthly results indicated that these data require i nves tiga tion. All dosimeters and the reader used to generate the September results _ will be recalibrated. The results of this investigation will be pub-lished in the 1980'PBAPS Radiological Environmental Monitoring-Program report. 13

l IV. 5uty,AgY AND CONCLUSIONS I 1 l I I y ~ > - - a----

IV. SLfV1ARY AND C0fiCLUSIONS This report on the radiological environnental nonitoring program conducted at the Peach Bottom Atomic Power Station for Philadel-phia Electric Company by Radiation itanagerent Corporation covers the period January 1,1979 to Decerber 31, 1979. During this per-iod 3409 analyses were perforred on 2800 sarples. Surface water and discharge water sarples were analyzed for con-centrations of tritium, gross beta, and gamma-emitting nuclides. Surface water was also analyzed for concentrations of gross alpha. Corparisons of unaffected stations wi th potentially affected sta-tions, in Conowingo Pond, showed no signi ficant di f fe rence in s on-centrations of the radionuclides s tudied. It was shown that no significant differences existed between the preoperational and operational periods; therefore, i t can be concluded that the levels of radioactivity in Conowingo Pond water have not been reasurably influenced by the operation of the Peach Bottom Atomic Power Station. High sensitivity I-131 analyses were perforred on weekly milk samples while cows were on pasture and on nonthly samples while cows were not grazing. Low concentrations reasured in the spring were attributed to releases from the incident at Three Mile Island. Trace concentra-tions of I-131 attributable to PBAPS operation were detected in samples collected in the summer and fall with no significant exposures to the population. Soil sarples were analyzed for concentrations of Sr-90, Sr-89 and ganna-emitting nuclides and levels observed were in agreerent with preoperational data. Environmental gamma radiation reasurements were made using therro-luminescent dosimeters. Resul ts f rom the si te-boundary, middle and outer rings were found to ce not significantly different, so it can be concluded that the operation of Peach Bottom Atomic Power Station did not produce measurable levels of arbient garna radiation at any off-site location. In assessing all the data gathered for this report and comparing the results with preoperational data, it is evident that the operation of the Peach Botton Atomic Power Station resulted in no significant radiological impact on environrent. 15

REFERENCES O (1) Radiation Management Corporation Publication, Peach Botton Atomic Power Station Preoperational RadiologicaT~iio ni to ri ng Report for Units #2 and =3, January 1974, Philadelphia, Pa. (2) Interex Corporation, Peach Botton Atomic Power Station Regional _ Ervirons Radiation Monitoring Progran Preoperational Summary Report, Units #2 and $3, February 5 1966 through 3 August 8 1973, June 1977 Natick, Mass, 2 i ( 16

a-m. + 4 a e 4 amm s___.4_ -__.-r ) i i i 4 V. TABLES 4 i I l f 1 I 2 -,e-_y

TABLE I RMC STATION DESIGNATION AND SAMPLE IDEt,TIFICATION SYSTEM VV-WWW-XXYZ General code for identification o f sarples, where: VV-Power Plant identification code PS - Peach Bottom Atomic Power Station WWW - Type o f Sampl e APT - Air Particulates IOM - Immersion Dose MLK - Mil k DWA - Discharge Water PWA - Rain Water SWA - Surface Water WWA - Well Water 50L - Soil XX-Angular Sector of Sampling Location Compass is divided into 36 sectors of 10 degrees each with center at Peach Bottom off-gas stack. Sector 36 is centered due North, and others are numbered in a clockwise direction. Sector 00 is used to designate an unidentified direction. Y - Radial Zone of Sampling Locatior (In this report, the Radial distance from the Peach Bottom off-gas stack for all regional stations). S: on-site location D: 3-4 mil es o ff-site A: 0-1 mile off-site E: 4-5 mil es o ff-si te B: 1-2 mil es o f f-site F: 5-10 miles o ff-si te C: 2-3 miles o f f-si te G: 10-20 mil es o f f-si te H: 20-1G0 miles o f f-si te Z - Station's Numerical Designation within sector and zone, using 1,2,3.... in each sector and zone.

.~ - --+. ~~ .. - -.~ TABLE II RMC SAf1PLE COLLECTION AND ANALYSIS PROGRAM ENV. STATION LOCATION STATION RMC STATION DIRECTinN & DISTANCE COLLECTION METHOD ANALYSIS AND FREQUENCY NO. STATION NAME DESIGNATION FROM PEACH BOTTOM & FREQUENCY PERFORMED ' A. SURFACF WATER i ILL Peach Bottom IS-SWA-654 Continuous sampler Water is continuously sampled Tritium - Monthly. Units 2&3 On site at Units 2&3 Intake from the Peach Bottom Units Gross Beta (S+1) - Monthly Intake - Composite 1200' ENE af Units 2 & 3 2&3 Intake and is collected . Gamma Spec - Monthly in a 190 gallon tank. Each . week 2 qts. are withdrawn f rom the tank prior to drain-ing the tank and placed in a 2 gallon polyethylene bottle to form a monthly composite sample. 1Q Peach Bottom it-SW A-653 On site at Unit #2 Intake Two gallon grab sample is Sgae as station ILL above Unit #2 about 1200' ENE of Units 213 collected in front of intake Intake structure monthly. 4F Conowingo Dam PB-SW A-14 F2 In the Conowingo Hydro-Two gallon grab sample is Tritium - quarterly comp. El. 33' clectric Station, 8.6 taken nonthly from the same Cross Alpha (S+1) - nonthly MSL miles SE of Units 2 & 3. header which is used for the Gross Beta (S+1) - monthly composite sample (4L). This Ganna Spec - monthly header continuously draws pond water from about elevation 33' MSL. This sample and PB-SWA-14F3 samples are collected at the sane time. 4G Conowingo Dam PB-SW A-14 F3 At Conowingo Dom in Two gallon grab sample is Gross Beta (So!) - monthly Surface Maryland, 8.5 miles SE collected near the surface Gamma Spec - monthly of Units 283. Water sample of the Dond on the upstream is taken from Conowingo side of the dam conthly. Pond on upstream side of dam. 4L Conowingo Dam PB-SW A-14 FS Continuous sampler in Water is continuously sampled Tritium - monthly E1. 33' MSL - Conowingo Hydroelectric from a header which draws Pond Gross Alpha (S+1) - nonthly Composite Station; about 8.6 iniles water from elevation 33' MSL Gross Beta (S+!) - monthly SE of Units 2 & 3. and is collected in a 175 gal. Ganma Spec - monthly tank. Each week 2 qts. are withdrawn from the tank prior to draining the tank and placed in a 2 gal. polyethylene bottle to form a monthly composite sample. GA Holtwood Dam PB-SWA-33F1 At Hol twood Dam, Pa., Two gallon grab sample is col-Same as station 4F above Hydroelectric S 8 miles NW of Units 2&3. lected from Holtwood Pond at Station Hydroelectric Station intake monthly.

TABLE II (cont.) RMC SAMPLE COLLECTION AND ANAL. SIS PROGRAM ENV. STATION LOCATION STAl!ON RMC STATION DIRECTION & DISTANCE COLLECTION METHOD ANALYSIS AND TREQUENCY NO. STATION NAME DESIGNATION FROM PEACH BOTTOM & FREQUENCY PERFORMED 61 Hcitwood Dam PG-SWA-33F4 Continuous sampler at Water is continuously Tritium - monthly Hy droel ec t ric Holtwood Dam, Pa., 5.8 sampled f rom the Holtwood Gross Alpha (S+1) - monthly S t a t io n-Compos i t e niiles NW of Units 2 & 3. Hydroelectric Station Gross Seta (S+1) - monthly Intake and is collected in Gamma Spec - nonthly a 175 qal. tank. Each week 2 qts. are withdrawn from the tank prior to draining the tank and placed in a 2 gal, polyethylene bottle to form a conthly composite sample. 13A Chester Water PB-SW A-l lC1 On east shore of Conowingo Two gallon grab sample Tritium - quarterly corp. Intake-Pond Pond at Chester Water is collected frvm Conowingo Gross Beta (S+1) - monthly Authority Intake 2.4 Pond near the shore monthly. (knina Spec - monthly miles ESE of Units 2 & 3. 13B Chester Water PB-SWA-llc 2 At Chester Water Authority T.<o gallon grab sample is Same as station ILL above Intake-pump intake. The same as collected from pump discharge (when samples are collected) Discharge PU-SW-llc 1 but the sample during any month that the is collected from the pump pump operates, discharge. B. DI5dlARGE WATER IM Peach Bottom PB-0WA-1352 Located at Canal Discharge Two gallon grab sample is Tritium - monthly Canal Disct.arge structure; 1.0 miles SE collected at the exit of Gross Beta (S+1) - nonthly of Units 2 & 3. the discharge canal monthly. Ganand Spec - monthly IMM Peach Bottom PB-DWA-13SS A continuous sampler Water is continuously sampled Same as station IM above Canal - on site at canal discharge f rom the Peach Bottom Unit Discharge - 1.0 miles SE of Units 2 & 3. 2&3 discharge canal and is col-Composite lected in a 190 gallon tank. Each week 2 4ts. are withdrawn from the tank prior to drain-ing tl.c tank and placed in a 2 gal, polyethylene bottle to form a monthly composite sample.

m_ _.._m _m. m. v .TAGLE !!(cont.) RMC SAMPLF COLLECTION AND ANALYSIS PROGRAM ENV. STATION LOCATION STATION. RML STATION . DIRECTION & DISTANCE COLLECTION METHOD . ANALYSIS AND FREQUENCY NO. STATION NAME DESI GNATION FROM PEACH BOTTOM & FREQUENCY PERFORMED' C. WELL WATIR 3 ^ 10 Peach Bottom. PB-WW A-1552. Well at plant site. 1400' Well pump is run fur . Tritium - quarterly Si t e-Ut il i ty - S of Units 2 & 3. several minutes prior to Gross Beta (Se!) - quarterly Building sampling in order to flush 4 the sample line. Then two gallon grab sample is taken from the building taucet quarterly. IV Peach Bottom FS-WWA-1252 Well at plant site, 1400' Same as station IU above Sane as station 10 above Site-Info. SSE of Units 2 & 3. t -Center 7 - Darlington, Md. PB-WWA-16F1' 9.6 miles SSE of Units 2 & 3 Same as station 10 above Same as station IU above Area in Ha r ford Co., Md. 40 Peach Bottom PB-WWA-2182 Well in site Area, Sane as station IV above Same as station 7 above Site Area 1.5 miles SW of Units 2 & 3. l D. AIR PARTICUt ATES 12 Peach Bottom PB-APT-1154 On site at Weather Station About 1-cfm continuous Gross Beta - weekly Weather

1. 1, 0.3 miles SE of Units 2&3.

flow through filter paper Cdr.ma Spec - monthly comp. Station #1 (approx. 2" diam.) is installed for a week and replaced. i - 1 E. PRECIPITATION 1A Peach Bottom PB-RW A-llS1 On site at Weather Station The sample from the rain Gross Beta - monthly Weather

1. 1, 0.3 miles SE of Units collector is shipped to Gamma Spec - monthly Station #1 2.8 3.

RMC conthly. The rain collector consists of an a I B-inch diameter plastic j funnel connected to a two-gallon polyethylene conta iner. '8 Colora, MJ. M3-RW A-12 fl 9.9 Niles ESE of Units 2 & 3 Same as Station IA above Same as station lA above in Cecil Co., Md.

~ ~ TABLE !! (cont.) RMC SAMPLE COLLECTION AND ANALYSIS PROGRAff .ENV. STATION LOCATION STATION RMC STATION DIRECTION & DISTANCE COLLECTION MFTi'0D ANALYSIS AND FREQIIENCY NO. STATION NAME~ DESIGNATION-FROM PEACH BOTTOM & FREQUENCY PERFORMED F. MILK Regional PB-ML K-24 F1 Distant regional farms Two gallon grab sample 1-131 - weekly Farm A surrounding the site, is collected at each Aq tritium - quarterly des ignated "A", "B" and form from a tank containing Regional PB-Mt K-19G1 "C" on the west side of milk from all cows weekly I-131 - weekly Farm B Conowingo Pond and "E" while cows are on pasture. on the east side of monthly otherwise. i Samples are shipped to RMC. Regional PB-ML K-31 F1 Conowingo Pond. Nea r-Sanie as station A above Fa rm C ' by regional farms surrounding the Peach Regional PB-ML K-S DI Bottom site on the west Same as station B above Fa rm D side of Cnnowingo Pond are designated "G"s "H" Regional PB-MLK-36F1 and "J". Regional farms Same as station A above 1-131 - quarterly Farm E at intermediate distances except quarterly from Peacn Bottom on the 1 Regional PB-MLK-20B1 east side are designated Same as station A above Fa rm G "D", "L", "M" and "N". Regional PB-MLK-18BI Same as station B above Fa rm H Regional PB-MLK-28Al 1-131 - weekly Farm J Aq tritium - quarterly Sr-39 & quarterly Gansina Spec - quarterly Regional PB-ML K-5Bl Same as station A above I-131 - quarterly Fa rm L except quarterly 1 Regional PB-ML K-7Cl Same as station A above Same as station L above Farm M except quarterly Regional PB-MLK-IIC3 Same as station B above Farm N 4

TABLE II (unt.) RMC_ SAJ1Ptf,.C01_t t CT10f( Af(0, Afif ty'i,1s PROGRAM E f4 V. STAlluti LOCATIOff S TAT lufi FMC STATION D!PICT10f4 & DISTAf1CE Cot t f C T10fl Mt THnO Af1ALYSIS AND FRIQUltiCY NO. STATION NAftf DESI6ri AT IOfl f kt41 PE Atlt BOTTOM & TRIQutNCY PERf0PMED G., _.5,01l 2 Peath Buttom it-SUL-13S t On s i te, 0 ') miles St Seven cores ( 2" i n d iainee t t r Goisaa 5 pert - st+a i-antiudl 130 ' Sec tor of Units 2 & 3. and 6" deep) are wllected Sr-89 & semi-annual Hill frnm a 50 X S0 f t. ar ea s emi-an nua l l y. T o p 1 i nc.h and bottom S inc hes are separated, sealed in plastic bags, and shipped to PJ1C. 3A Delta, Pa. PH-SOL - 230 [

3. 6 m i l es SW o f Un i ts 2 & 3 S a nn-as station 2 above Saine as station 2 above Substation a t Del t a Pa.

5 W4 etteld, Pa. Fli-50t. 8E l 4.6 miles E of Units 2 & 3 S a nn-as s ta tion 2 above same as station 2 above a t Walt e f iel d, Pa. .l. [ NVI R0f4MI N T Al IXbittl IRY - TI D At eac h of the falluuinq stat ion'. t here are 2 env ironmental dos iinet e r pat 6 ets wi th 4 TL Ds per pac karje. One par ket is replac.ed mont hl y, and one quart erly. The packets for e.tch time period are (olletted and repl.ited on the same day at all the stations. lA Peach Bottom it.lDit.IISI On s i t e, 0. 3 mil es SE o f Pim edure for (ollection TL D - monthly & quarterly Weather Units 2 & 3. is described in the Station el placement procedure in Sec. I I., A. IB Peach Bot tom PB-! Of1-3351 On site, 0.5 miles flW of TLD - monthly & quarterly Weather Units 2 & 3. Station 42 1C Pea c h Bo t tom it-IDM-1651 On s i te, 0.9 miles SSE o f TLD - monthly & quarterly South Units 2 & 3. Subs t a t ion Rd. ID Pea c h Bo t t om PB-I Df t-1451 On si te, 0.1 miles SE o f TLD - nunthly & quarterly 140' Sector Units 2 & 3. Si te Boundary ll Peac h Bottom PB-I DM-3SS I On site, 0.6 miles fifM o f TI D - monthly & quarterly 350" Sec tor hits 2 & 3. Site Boundary i l

T/J1LE II (cont.) RftC SAMPt I C0ltlCT10N AND ANALYSIS PROGRAM ENV. STATION LOCATION STATION RMC STATION DIRECTION & DISTANCE CutlECTION MrTHOD ANALYSIS AND FREQUf f4CY NO. STATION NAME DESIGNATION FROM PEACH BOTTOM & FREQUENCY PERFORMED . _ _. _ _. ~. J. [NVIRONMENTAt DOSIMETRY - Tto Jcant.1 If Peach Bottom PB-IDH-20S1 On si te, 0.6 miles SSW o f TL D - nuanthly & quarterly 200" Sector Units 2 & 3. Hill 1G l'eac h Bot tom Pil-IDM-30S 1 On site, 0.7 miles WNW of TLD - ng;nthly & quarterly fbrth Units 2 & 3. Subs ta tion lH Pr ach Ikittom PB-IDM-27St on site, 0.6 miles W of TLD - monthly & quarterly Site 270" Units 2 & 3. Sector Hill 11 Peach Bottom l'B-I Df t-ISSI On site, 0.6 miles SSE of TLD. nonthly & quarterly South Uni ts 2 & 3. Substa tion IJ l'each Bottom PD-IDM-18Si on sitt>, 0.7 miles 5 of TLD - nonthly & quarterly Site 180" Units 2 & 3. Sector Hill IK Peach liottom 0B-1 D!1-6S1 On si te, 0.1 i.iiles NE TLD - conthly & quarterly Units 2 & 3 of Uni ts 2 & 3. Administration Building IL teac h Bo t tom LB-IDH-652 t outed near Unit 3 TLD - monthly & quarterly Unit 3 Intake structure; 0.2 miles intair e LNl of Units 2 & 3. IM Peach Bottom PB-I Dil-1352 l oc ated near Canal Discharge 110 - niinthly & quar'terly Canal Discharge structure; 1.0 miles SE of Units 2 & 3. 2 Peach Bottom PB-IDM-13SI On site, 0.9 miles SL of TI D - mnthly & qu..rterly Site 130" Units 2 & 3. Sector Hill 3A Del ta, Pa. PB-Ifti-23D1 3.6 miles SW o f Un i ts 2 & 3 a t TLD - nonthly & quartt'rly Substation Delta Pa. 4K Conowingo Dam l'B-I DH-l4 l l On roof of Conowingo IlD - mnthly & quarterly Powerhouse Power hou'.e, 8.6 miles SE o f Roo f Units 2 & 3.

TABLL !! (cont.) Idic SAMPI f COLLECTION Af4D ANALYSIS PROGRAF 1 ENV. STATION LOCATION STATION RMC STATION DIRECTION & DIST*.NCE COLLECTION METHOD ANALYSIS AND FRfQUEf1CY NO. 5iATION F4AMF DE5 iGNAT 10N fROM PEACH BOITOM & TPEQUEftCY P[RFOPEE D _....... _.... ~.. _......

9... f NV!RONME NT_At Dos I Tff,T RY.. _T L D _( en t.]

5 Waketteld. Pa. It-I Df t-Hi l At Walefield, Pa. 4.6 miles TLD - moeith:y & quarterly E of Units 2 & 3. fB Hol twood Dam ib i bit-31f 2 On roo f o f Hyd roel e<. t r i c TL D - #:unthly & quarterly Hyd roel er t r n Station, 5.8 miles TM of St a t ion Units 2 & 3. 12B Phila., Pa. It-I DM-Pat l On roo f o f Radiation TLD - nonthly & quartert.v 3503 Ma rket St. Mana gement Corp., Philadel ph ia, Pa., 64 miles E o f Units 2 & 3. 14 Peters Cr et4 f t-! Dit-luc I 1.9 miles LSE of Units 2 & 3 near TLD - finnthly & quarterly t he mouth o f Peters Creek 15 Silver Spring It-I Df t-36DI 3.6 mile <. N of itni ts 2 & 3 near TLD - conthly & quarterly Road silver Spring Road. 16 Nottingham, Pa. PB-! Df t-9Gl 12.8 miles E o f Un i ts 2 & 3 a t TLD - sionthly & quarterly Substation flottingham Substatson. 17 Riverview PC-I Dit-l l L 1 4.0 miles E'a f o f Un i t s 2 & 3 TLD - monthly & quarterly Road near Riverview Road. 18 f awn Gro ve, Pa. Ib ibit-26fl 10 mi l es W o f Un i ts 2 & 3 a t TLD - riunthly & quarterly Fawn Grove, Pa. 19 Ped Lion, Pa. It-l u!1-30 G1 20.6 miles WfM of Units 2 & 3 TLD - monthey & quarterly dt Ned 1. ion, Pa. 20 Hel Air, Md. PD-IDM-20G1 15.1 mile

• S$W o f Uni ts 2 & 3 TL D - mnthly & quarterly Area near Bel Air, Maryland.

21B lanc. aster. Pa. It-I Df t-35GI 19 mil es NNW o f Uni t'. 2 & 3 iLD - conthly & quarterly A re-a nea r Lancas ter, Pa. 22 Eagle Road Ib lDit-3Cl 2.4 miles Nfif o f Uni ts 2 & 3 TLD - monthly & quarterly 1 nea r I a-J e Road. 23 Peach Bottom PH-!bM-ISBl Offaite Hill 1.0 miles TL D - monthly & quarterly 150" Sec tor Hill SSE of Units 2 & 3 of t site 24 Ha r risv ille. Md. PB-I Df t-l l61 10.9 miles ESE of Units 2 & 3 TLD - monthly & quarterly hies ta t ion at Harris Substation

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se l s ay 4 4 7 3 7 3 4 7 2 9 4 4 2 t l 2 2 4 4 4 4 1 4 4 5 1 1 4 oa T nA 0 9 -r 4 S 9 8 -r 4 S se 1 s 3 y 1 3 3 3 3 4 3 2 3 4 4 2 4 l 4 4 4 4 1 4 4 4 1 1 a 1 n A a f mc o me 2 2 ap 1 1 4 e G ;' p y T D. 1T sa sh t op n rl o GA C s I s a I ot 2 2 I r :e 1 1 G1 E, i 3 ll A 1 T 1 4 4 4 4 fose rl ep 2 2 3 3 3 3 4 3 2 3 4 4 2 b m 4 4 4 4 1 4 4 4 1 1 4 1 1 ma uS N 1 n A I C D E G 1 a I, M N 1 o m m m m m m m m m m m t n mt r r r r r r r i r r r a a a a a a a o a a a o oa i t t d F F F F F F F T F F F t t S M a o l l l l l l l l l l c H r a a a a a a a a a a o e a n n n n n n n n n n L hh r o o o o o o o o o o L ct o i i i i i i i i i i g g g g g g g g g g aa l ee o e e e e e e e e e e PW G R R R R R R R P. R R R R F TAW N K. n I l o A i R A M i. t o 1 8 aN t S E F

TAlli.E III ConL. Type of Analyses Station Number of Gross Gross Gamma Total No. 1,ocation Samples 11 - 3 Ileta Alpha T1.D Spec. 1-131 Sr-89 Sr-90 Analyses G. SO I I. 2 Peach flot tom 4 4 4 4 12 130* Sector liill 3A Delta, Pa. 4 4 4 4 12 Substatton S Wakefield, Pa. 4 4 4 4 12 li. ENVIRONilENTAI, DOSiflETRY 1A Peach Ilottom 64 64 64 Weather Station #1 1 15 Peach llottom 64 64 64 Weather Statton #2 1C Peach Ilottom 63 63 63 South Substation Roat! ID Peach Itottom 64 64 64 140* Sector Site lloundary 1E Peach !!ottom 64 64 64 350* Sector Site 13ounda ry 1F Peach liot tom 64 64 64 200* Sector 11111

se l s ay 4 6 4 0 4 4 4 4 4 3 t l 6 5 6 6 6 6 6 6 6 6 oa T nA 0 9 -r S 9 8 -r S se 1 s 3 y 1 l a I n A a f mc o me ap e GS p y T DL 4 6 4 0 4 4 4 4 4 3 T 6 5 6 6 6 6 6 6 6 6 sa sh t op n rl o GA C s t sa I ot I r e GB E L B 3 A 1 T 1 fose rl ep 4 6 4 0 4 4 4 4 4 3 b m 6 5 6 6 6 6 6 6 6 6 ma uS N no lg t i e t l k a n n 1 B a 1 t o o 1 t e 1 s f i l t 1 e n g 1 b o n ma m Il t 1 v I r 1 S aR 1 u mo t 1 m ma m m ma m I o ot or ot or o3 t o1 oh or D i t s t o t s t o t a t t c t o e t t b t t t b t t t & r t & t s t t a os a ou nc ou oc o t i ioi oc P gu o i l l c B S l S f S e l e li2 s l 2 l D i S ih e no I o. S i hh h hh h h s n h, hl h a wr I ct i ct ca c* t oe c 0 ct c* ct ar a au a0 aim ai an a0 l n w eo e7 eo e3 eni en ea e3 e oo t PN P2 PS P1 P UA PU PC P1 D CP n o t I 1 K M A K 0 i. I t o i 1 1 I I I 2 3 4 1 l aN t S

TABI.E III Gont. Type of Analyses Statton Number of Gross Gross Gamma Total No. l.ocation Samples 11 - 3 Beta Alpha TLD Spec. 1-131 Sr-89 Sr-90 Analyses 5 Wakerield, Pa. 64 64 64 6B 11o1 twood Dam 64 64 64 ilydroelectric Station 12B Phila., Pa. 64 64 64 3508 Market St. 14 Peters Creek 63 63 63 15 Silver Spring Rd. 64 64 64 16 Nottingham, Pa. 63 63 63 Sul.statton 17 Riverview Rd. 64 64 64 18 Fawn Grove, Pa. 64 64 64 19 Red I,lon, Pa. 59 59 59 20 Bel Air, Md. Area 64 64 64 2iB 1.a nca s t e r, Pa. 64 64 64 22 Eagle Road 48 48 4fl 23 Off-site 150' 63 63 63 Sector Ilill 24 lia r r i s v i l l e, tid. 61 63 63

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m m_. k f. TABLE IV SIN!!ARY OF RADIDACTIVITY CONCENTRATIONS No of Sample Type aut Samples Number Pe riod Period Period l're-op 1ovatton Analvsis Analyzed Detected Minimum' Maximum Mean Mean Units StJRFACE WAFER ] Potentially ' Aqueous Tri tium (Grah) 12 6 <60 160 t 80 91 1 58' 320 t 250 pct /l ' Affected Aqueous Tritium (Grab-Quarterly 8 2 <60 90 t 70' 70 t 19 pC1/1 Stattous Comp.) (IQ. 4F Aqueous Tritlum (Composite) 24 8 <60 150 1 60 78 ! 39 240 ! 30 pcl/1 4G 13A-Grah) Cross Meta (Soluble-Grah) 48 47 C.5 4.1 t .5 1.8 t 1.4 3.3 t 2 6 pC1/1 ( l l.L. Gross neta (Soluble-Composite) 24 23 <.5 2.7 2 .5 1.5 t 1.0 3.5 t 2 6 pC1/1 4-Composite) ' Gross Beta (Insoluble-Grah) 43 30 <.3 13.7 2 9 2.4 t 52 3.4 ! 31 -pCI/I (4F Gross neta ~24 17 <.3 1.3 t .4 63 .67 3.4 2 2.6 pC1/1 13A - Quarterly (Insoluble-Compostte) I Composite for Gross Alpha (Soluble-Grah) 12 0 <.2 <.9 <.46 pC1/1 Tritlum) Gross Alpha (Soluble-Composite) 12 <.2 <.9 .48 2 37 pC1/1 Gross Alpha (Insoluble-Grah) 12 12 .8 ! .5 3.0 t .5 2.7 1 4.0 pC1/1 + Gross Alpha (Insoluble-Composite) 12 4- <.1 2.1. t. .4 0.4 1.1 pct /l 5 Affected Aqueous Tritium (Grah-Quarterly 4 0 <60 <70 <60 pCi/l Stattous-Comp.) j (6A-Grah)- Aqueous Tritium (Composite) 12 8 <60 370 t 70 110 t 60 pC1/1 (61-Composite)' Gross Beta (Soluble-Grah) 12 11 <.5 2.5 t .5 1.6 t 1.0 3.5 1 0 4 pC1/1 i (6A-Quarterly Gross Beta (Soluble-Composite) 12 10 <.5 2.2 t .5 1.5 1 .4 pC1/1 1 Composite fo r Gross Beta (Insoluble-Grah) 12 8 <.3 5.6 t .6 1.3 2 3.1 3.7 2 4.5 pC1/1 Tritium) Gross Beta 12 11 <.3 1.8 i .4 .70 1 79 pC1/1 (Insoluble-Composite) Cross Alpha (Soluble-Crah) 12 2 <.2 1.4 ! 9 58 1 .81 pCi/l Gross Alpha (Soluble-Composite) 11 2 <.3 1.7 t .9 .61 2 .77 pC1/1 Cross Alpha (Insoluble-Grah) 12 8 <.2 2.2 i ,5 0.7 1 1.8 pC1/1 i Gross Alpha (Insoluble-Composite) 12 4 <.1 3.2 t .6 .52 2 .17 pC1/I 1 9 e

TABI.E IV (CONTINUED) No. of Sample Type and Samples Number Period Period Period l're-op Locatlou Analysis An g zed Detected Minimum Maximum Mean Mean Units DISCllARGE WATER Potentially Aqueous Tritium (Grah) 12 7 <60 140 ! 80 83 1 43 310 2 200 pCi/1 Affected Stations Aqueous Tritium (Composite) 9 3 <60 100 ! 70 72 ! 24 480 1 30 pC1/1 (IM - Grah) Gross Reta (Soluble-Grah) 12 12 1.1 t .4 2.4 2 .) 1.9 1 1.2 3.4 0.6 pC1/1 (IMM-Composite) Gross Beta (Soluble-Composite) 9 9 1.5 i .4 4.5 t .5 2.4 t 1.9 3.4 1 0.6 pC1/1 Gross Meta (Insoluble-Grah) 12 9 <.3 3.8 i .5 1.4 1 2.1 3.2 1 1.3 pCi/l Gross Beta ( I nso l ub l e-Coripos i t e) 9 7 <.4 1.1 1 4 .74 i .50 4.3 t 2.5 pC1/1 WEI.I. WATER Ou-Site Aqueous Tri t ium (Quarterly 8 3 <70 110 t 70 84 2 35 270 2 300 pC1/1 We11s (Composite) (lu + IV) Gross Heta (Soluble) 8 2 <.3 .6 t .4 .38 1 .21 3.1 2 0.8 pC1/1 Gross neta (Insoluble) 8 5 <.3 9t .4 .61 2 .53 3.2 t 1.2 pC1/1 Site Area Aqueous Tritium 4 1 <70 70 t 70 75 1 12 410 t 100 pCi/l (40) Gross Beta (Soluble) 4 2 <.3 8t .3 .55 1 .48 3.0 t 0.1 pC1/1 Gross Heta (Insoluble) 4 3 <.3 .9 t .4 .60 t .52 3.0 pC1/1 Distant Aqueous Tritium 4 0 <60 <70 <68 pC1/1 Well (7) Gross Beta (Soluble) 4 4 1.1 t .4 2.1 ! .4 1.4 1 1.0 pCi/l Gross Beta (Insoluble) 4 2 <.3 1.2 t .4 .60 t .82 pCi/l RAIN WATER On-Site (IA) Gross Beta (Total) 12 11 <1 14 t 2 5.8 1 7.9 4.8 1 6.4 pCi/l Gross Beta (Total-Surface y Deusity) 12 11 <50 1100 t 300 510 2 680 pC1/m

TABI.E IV (CONTINUED) No. of Sample Type auil Samples Number Period Period Period l're-op I.n ca t ion Ana lys is Analyzed Detected _ Minimum Maximum Mean Mean Units RAIN WATER (Cont.) Distant (8) Gross Beta (Total) 12 8 <1 16 t 2 6t 11 pC1/1 Cross lieta (Total-Surface 2 Density) 12 8 <40 1000 200 400 1 630 pCl/m AIR PARTICUl.ATES Weather Stat ton Gross Beta 52 52 003 +.002 .093 i.009 .035 !.031 pct /m

1. 1 ( 17.)

MII.K Near Farms Tritium (A.gueous Fraction) 9 3 50 1 20 110 t 70 74 1 3 pC1/1 (G. ll..I) (miIk) (G J only for Tritium (Aqueous Fract ion) 8 4 <70 130 1 70 93 t 14 140 1 248 pCi/l Tri t lum) (water) 1-131 128 28 <.03 .65 i 06 08 i .19 0.2 pC1/1 (milk) Sr-89 (Quarterly-Crah, Farm J) 2 1 < 2 2t 1 2.0 t 0.0 pC1/1 (milk) Sr-90 (Quarterly-Crah, Farm J) 2 2 1.8 t .9 4.1 i .8 3.0 3.3 pC1/1 (milk) In t ermed ia t e I-131 113 7 c.03 .28 ! 05 .054 !.058 0.2 pCi/l Farms (D,L,M N) (mi1k)

TABI.E IV (CONTINilED) L. of Sample Type and Samples Number Period Period Period l're-op Location Analysis _ Analyzed Detected Minimum Maximuis Mean Mean Units M II.K (cont.) Dintant Farms Tritium (Aqueous Fraction) IS 4 <70 110 t 80 85 1 14 pC1/1 (A,B,C,E) (milk) (A, C only for Tritium (Aqueous Fraction) 3 4 <50 110 2 70 72 2 9.9 103 2 73 pC1/1 T71tlum) (water) 1-111 143 9 <.03 .53 2 06 .053 2 .11 .02 pC1/1 (milk) so li. On-Site Sr-89 (top 1") 2 0 <.09 <.2 <.17 pC1/g Locatton (d ry) (2) (bottom) 2 1 <.1 .2 t .2 .15 2 .14 pC1/g (d ry) Sr-90 (top 1") 2 2 .18 .04 .45 t .09 .32 i .38 2.1 pct /g (dry) (bctrom) 2 2 .17 1 08 .23 ! .06 .20 ! .08 0.1 pct /g (d ry) Distant SR-89 (top 1") 4 0 <.06 <.2 <.12 pCl/g 1.ocatton (dry) (3A & 5) (bottom) 4 1 <.05 .2 t .1 .40 t .72 pcl/g (d ry) SR-90 (tep 1") 4 3 <.03 .25 t .07 .17 i .20 0.6 pC1/g (dry) (bottom) 4 2 c.03 .16 ! .05 .08 t 09 0.4 pct /g (d ry) Ai! results above the MDI. are quoted with a two sigma counting error. A two sigma deviation of the data is incl uded wi th each mean. No value is given when only one result appears. o** A two sigma deviation of the data is included with each mean. A dash Indicates that this analysis was not performed during the pre-opera t ional period, l>re-op mean was calculated using pre-operational data where the minimum detectable levels were the same as those in 1974. (1) Results repo rt ed in oC1/v (wet) ar.> calcolate.1 noing t i,o n eon a r a.=, an t o unsehe korn-a a.. e.,,.

. TABLE V SUltiARY OF GAlfiA SPECTROMETRY

1. OF
2. OF SAMPLES SAMPLES NUCLIDES

.WITil fluCLIDC PER'0D* PERIOD

• PERIOD **

PR E-0 P * *

• UNITS SAMPLE TYPE AtlALYZED F0VilD DETECTED Mlfi! MUM MAXIMU!!

MEAfl MEAN Surface Water - Potentially Affected Stations (1Q, 4F, 4G, '13A, - Grab) 48 K-40 3 7!6 1319 1018 pCi/l (1LL, 4L - Composite) 24 K-40. 3 1128 1517 1314 pCi/l Surface Water - Unaffected Stations (6A - Grab). 12 K-40 1 1419 14 pCi/l (61 - Composite) 12 flone Discharge Water - Potentially Affected Stat ons i ] (IM - Grab) 12 K-40 3 918 1318-1114 pCi/l (ITN - Composite) 9 flone Pmcipitation - On-site Station (IA - Composite) 12 Be-7 1 21 7 21 pCi/1 K-40 1 14110 14 pCi/l T Precipitation - Distant Station 18 - Composite) 12 Be-7 2 1514 37 23 26131 pCi/l Air Particulates - Weather Station #1 3 (12) 12 Be-7 12 43t8 150 15 87158 10~ pCi/m 3 fib-95 1 0.7t0.6 0.7 10~ pCi/m3 Cs-137 7 1.010.7 3t1 2t2 10~ pCi/m3 Ce-144 4 65 914 7i3 10~ pCi/m i Milk - flear Farm (J) 4 K-40 4 10001100 1400t140 12001300 pCi/l Cs-137 3 2.430.7 4.510.8 3.512.1 pCi/l

TABLE V (cont.) SUtf1ARY OF Gaff 4A SPECTROMETRY f

1. OF
2. OF SAllPLES SAMPLES fiUCLIDES WITH fiUCLIDE PERIOD

• PERIOD
• PERIOD **

PRE-0P*** UNITS SAMPLE TYPE Af1AI.YZED FOUfl0 DE'lECTED 111 rill 1UM MAXIMull 11EAtl MEAN i - Soil - On-site Locatior."- (2) (Top 1") 2 Be-7 1 0.6!0.2 0.6 pCi/g(dry) K-40 2 1011 2112 16 16 1917 pCi/g(dry) Sb-125 1 0.2130.08 .21 0.410.1 pCi/g(dry) Cs-137 1 7.3p0.7 7.3 2.315.6 pCi/g(dry) Ce-144 2 0.210.1 0.310.2 0.310.1 pCi/g(dry) Ra-226 2 0.87t0.09 1.110.1 1.010.3 1.010.2 pCi/g(dry) Th-232 2

1. 130. 1 1.210.1 1.210.1 1.210.4 pCi/g(dry)

(Bottom) 2 K-40 2 12 1 2112 17113 2315 pCi/g(dry) Cs-137 2 1.010.1 3.310.3 2.2t3.3 1.123.5 pCi/9(dry) Ra-226 2 1.310.1 1.310.1 1.3 1.410.5 PCi/g(dry) - Th-232 2 1.310.1 1.410.1 1.410.1 1.6 1.5 pCi/g(dry) Soil - Distant Locations T & 5)(Top 1") 4 Be-7 1 0.310.2 0.3 pCi/g(dry) K-40 4 1411 2523 1929 2114 pCi/g(dry) Cs-137 4 .3210.3 1.310.1 .8210.82 0.610.8 LCi/g(dry) Ra-226 4 .67+.0 7 1.010.1 .88t0.29 0.810.9 pCf /g(dry) - Th-232 4 .641.08 1.210.1 1.020.5 1.011.2 pCi/9(dry) Cc-144 1 0.1.07 0.1 pCi/g(dry) (Bottom) 4 K-40 4 11t1 2613 19 t12 21t26 pCi/g(dry) Cs-137 4 .1010.03 .63t0.06 0.44s0.47 0.210.2 pCl/9(dry) Ra-226 4 .841.08 1.310.1 1.110.2 0.111.0 pCi/g(dry) j Th-232 4 .52t.05

1. 3 ! 0.1 1.110.7 0.9t1.1 pCi/g(dry)

All results above the MDL am quoted with a two sigma counting error. MDL values am not included. Period mean was calculated using only positive values for.the nuclides listed. Pre-op mean was calculated using only positive pre-operational values and not itDLs for the nuclides listed.

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i TABLE XII CONCENTRATIONS OF GAMMA EMITTERS

• IN DISCllARGE WATER Results in Units of pC1/1 t 2 sigma CRAll SAltPLES Sampling Dates Lnv.

Sta t io n ib. 1-06-79 2-10-79 3-04-79 4 07-79 5-06-79 6-0 2-79 7-07-79 11-04-79 9-01-79 10-07-19 11-03-79 12-02-19 IM All<MDL K-40(9*8) All<ttDL A.1 <!!DL All < MDL All <ttDL A11(f0L All(f tDL F-40(10'8) All <!!DL All <ttDL K-40(13t8) Others(MDL Others dtDL Ottiers< MDL COMPOSITE SAMPLES Samplieq reriod I' nv. 1-0 5-79 5-03-79(II6-01-79 7 06-79 8-03-79 8-31-79 10-05-79 11-02-79 11-30-79 Station to to to to to to to to to No. 2-02-79 6-01-79 7-06-79 8-03-79 8-31-79 10-05-79 11-02-19 11-30-79 l-04-80 IMM Al1(ItDL Al1<MDL Al 1 < MDL A i 1 < th Al1 <itDL Al1<MDL Al1 < MDL Al1 <MDL AlI <!!DL .f or typical minimum de tec toble levels of nua lides searched for arid not found, see Table XXVII. (1) Sampler out of order from 2-02-79 to 5-03-7?*.

m ~~ ----____ __ 1 r 1 0 0 6 ,1, O C e ,I e~ f-h y o OMSg N" OCOO C Oee 8

• • N....

N si, A g rNon

• ** e e N 3

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l i TABLE XIV 1979 MEAN OJtKT2TfRATION OF AQUDOUS TRITIUM IN WELL WATER IN QUARTER RESUUIS IN UNITS OF pCi/1 + 2 SIO1A Fhv. Station Collection Date No. 1/6 4/7 7/4 10/7 ON-SITE WEIJS & IV 90+57 JU 90+57 <75 80+28

0 t I M 8 e M 4 fJ eJ et M fd f 4 fJ (J (4 M fJ N M fJ fJ (J fJ fJ fJ M M a.nd a e og e4 et ed M L 4 e es ee ee es es se.o es es ee.e ee .e a o es es se ee es es so I; >= 8 el taJ l V V V V V O we 9i O 2 Q4 4 @ M m 4 4 4 N M fJ fJ M lA o h M CO N M 4 O r M M es a c4 e4 >= laJ 8 Z g =.J m o tat.c o c c o + m o <t = s c o n o c o c o o o c% o coco t> g e e u o -t n & els e e o -a ei O s= L1 o tJ eJ M m M >=.J Me s .a E 8 M (J Q f J e 4 Q O C* 4 @ o o M C J Q f J -7 Q 53 o N M e L V. O-t en u e**ti$4o e NeJ- = 4 (J es a f4 $ J J Q f a e4 e4 4m 0 Ww O b 3.e e o. o+ N 4 rJ N # *e N

• e4 0

2 o

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• pe N Pi ( J Q o g* ts.$ E J N
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• • (J M *moNOeom(

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• • O o

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• N 4 eJ N 4 M N M eJ 4 Z

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• (
• OOooOOOOOoO
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3 o.

uoCOOOOOO ac. C 1 4 C .a U t d 0 J

TABLE XVI C0flCEflTRATI0f4S OF GAMMA EMITTERS If1 PRECIPITATI0fl (TOTAL SAMPLE) Resul ts in Uni ts of pCi/l s 2 sigma STATI0f( IA STATI0f1 8 DATE fiUCLIDES fluCLIDES 1-06-79 to 2-10-79 Be-7 21 7 Be-7 1524 Others* <MDL Others* <MDL 2-10-79 to 3-04-79 All *<MDL Al l *<MDL 3-04-79 b) 4-07-79 All *< MDL Al l * < f1DL 4-07-79 to 5-06-79 All *<MDL All*<MDL 5-06-79 to 6-0 2-79 K-40 14 10 All *<MDL Others* <f1DL 6-02-79 La 7-07-79 All * <ilDL Al l *<MDL 7-07-79 to 8-Ci-79 Al l *<MDL Al l *<MDL 8-04-79 to 9-01-79 All*<MDL All *<f1DL n-01-79 to 10-07-79 All *<f1DL All*<MDL 10-07-79 to 11-03-79 Al l '<MDL All *<MDL 11-03-79 to 12-0 2-79 All <MDL Be-7 37 23 Others* <MDL 12-02-79 to 1-06-80 All *<MDL All *<MDL For typical minimum detectable levels searched for and not found, see Table XXVII.

an e9h N >4 m L) J L. uJ w. Om M >= mm> uJ m H >*

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2 0 C m tJ t g O m ** (J p m es tJ e-s O== t o es O e44itJ O C entJ m o m tJtJ O =A m (J O O m en ve O m tJ 44 O m== (J O c ee to tJ M QQ C 8 N N N N %s cJ eg r J r J m'N N N 'N \\ \\ \\ \\ 'N *\\ 'N \\.t na m to t% -o 4 4.O e P* N N N O c3 Q O e & c :* tt \\ \\ \\ \\ S. \\ \\ \\ \\ \\ \\ \\*s N %. \\\\\\\\\\\\\\ N N \\ N. 'N*, N \\ \\ N 'N las O O O O m ee ."N ei m n ea 7 *.t m o e ce = e.e 4 4 - tJ t i c4 tJ eJ C

• J Z

>= CJ B COOOOOOOOOOOOOOOOOOO. OOOOOOOOOOOOOOO, O. OOO

• e m== ** e4 es e4 a4 ca ee ** *. m at Q U4 a.e e-*

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e e e e a e e e e e e e e e o e i e e e e e s J e fy f e.O.* e4 N#9O Q .*eeQ.*m8 P-if et D +O t J O f% Q.it rJ eJ Q O'.4 rJ e O

• e f J r+

PJ O f% qA e.e C (* r4 40.O pe C* y 84 O N P4 p.e Q 86 O N @ f4 (9 m f J

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re to c pe f 4 i J G== =* t J G, ee me c to C

• fJ (4 o m m

p. .J i. s e4 c J O ** = f J O O== 4 J m o e.e te f J G. a4 r 4 O O es tJ p e cJ.N \\ \\ \\.e \\ \\ \\ \\r J e. t J e a #a m *s ei e e J e.\\ \\ \\tm m m re 4.N s s % \\ s, s. , s s. N %. N \\ \\ s \\ s. s, \\. \\ \\ \\ \\, s s g N\\s S. NNN , NN .e J N . m c 3 a o ^.3 4 4 N N P-N O Q c c e C' e em e O C C O m== -e m (4 t e eJ rd J-Q f ee O O O O O O C C C O O O C O O O O O O Q O O O O O O O O O O O O O O O O O O O ce **== =* ** ** m== ee m ** c= C

• 5 E

~s p 6 N u o

9 9 7 7 2 2 o8 l 8 0 L 0t2 t D 4 0 l 6 M 2 2 9 1 1 9 9 7 7 8o2 8 6 8 L 2t0 s 0 0 5 M D 5 0 2 6 ( 1 9 9 7 7 5 7 1 7 L 0o3 t 0 0 4 1D 3t 9 G 4 ( 9 0 1 S 9 9 E 7 7 T 8 6 6 L A 1 o0 D l 3' 0 0 4 M L 0t3 i U 4 V C g 9 9 X X I T g R g e A s 9 9 6 l P 7 7 b p s 7 5 0 L a A d t o1 R I o at0 4' 0 D T 1 4 e 7 3 i 7 9 1 e r N m e s I / P i C e 9 9 8 d 5 p t 7 7 n R i 9 6 0 L u E 3 s 0o8 1 + D o l T o 3t2 4 0 6 f 3 t l T 0 p 8 m 6 7 1 t i I 1 V M o o X E f C n o E A y 9 9 d L 4 s l 7 7 L n U t B T G i h 9 5 + 2 t 2 o0 t + t a 1 A N n n 0t3 3 0 3 6 r U i 9 o l 6 6 f f f O n i d S e N s 9 9 7 h 0 t 7 7 c A s 2t0 4 0 2 L r l l 8 i u 8o2 9 + l e D a 1 0 9 6 l s R e 8 T R 4 6 1 4 f s L e C d f 9 9 i 4 0 7 7 4 l C l 5 t 5 L c l 1 o8 D t t 1 u 3t2 5 0 3 6 n 8 3 4 f o s 9 9 l 7 7 5 e 3 L v t 2 4 O D 4 o1 0t3 0 ? M le 1 ( 3 3 1 e l b a 9 9 7 t 7 7 5 c - + 6 o 4 L e 1 3 o4 t 1 D t 0t 0 0 0 0 9 M e 5 d 2 a 1 1 m u 8 9 m 6 7 i 7 7 n l 1 o3 i 0 0 L 3t0 t f 3 3 D i m 0 7 1 M 2 2 l 1 I 0 2 l a ic p y t r o o F .N 7 4 s vn 7 9 1 1 e 5 3 4 r no 2 Ei 1 h t e bi C C O s e t a B f t S

I = 1 3 t W 6 >= I 4 0 O 3 I N O M s f4 26 4 O O + C 4e Q t 4 N N 8 .J t V V V N i e C U. L t C O = 6 m

• t M

g 4 W e 8 J M 4 C. y= e O 4 i E M e 4 M I e4

• .eQ l

4 m 6 I O O O I O l 4 1 M J B V V V J N 8 M LJ l E C. 6 O O >'C

== t P 4 i M Ct XC 6 14& 9 =J *T

• 4 Q&

W G =( *T ." I >= O M : ~* b3 m 2 h E e O OO s-t O l .J e e e M ** 2 +? : 1mW4m*ms& 4 e t% 4 M.* M -t 4 m m.c 4 e w w m N ?D

• L*i w e

M 4 M6 6 O O O O O.. O O.... O O O. O O O. O O. O D C. O O O O C. C C M. QQO.OOO.OOOOOOOOe a O y eg e e M s e ' V V V V V V V V V V V V V V V v vV V V V V V V V V V V V V V V V V 8'* M.J 4 V V V V V N & m. J U e C* f e tJ 4 M

• t C.

t MM Q E = I

• a I.

M e M >= W 4 e4 O CJ ? O # J C* @ M C N 1 M C 4 M @ m f f & 4 M C 4 M.=s cJ rd O MO N 1 =* O m f J & m f J C* C M C N O 3 C P* #9 -O. 3 oeJM M ca O "3 m cJ r t C a f J c J G==* M rJ C C - (J M Ce M rJ Q Q M CJ f J %J M M fJCM M 4 d W4 4 % N N N N N. N N '. N N N N

• s N N,N N N N N N N N N N N N

%. N NNNNNNNNNNNNN W C6 cJMMM f t ? 4 1 tai M m m.c c c e N r-r= l-N es a c0 d S & C-PcoOOOm M M M f a rJ eJ C .J gg 6 - J 4 OOOCOOCCCCCOOOOOOOOOOOOOOOOOOOCM M Me -e M M MM M M M M C e J w w I at e-I & Q 4 . r, u n. P"* E l 4 O I l M4J 6 M l >* O I 4 i

• T C I

>= Q # l i l i t i I l I i I l I

an-4 e a 9 n w J t 2 .J M e M fJ 2 c. E s O O O E e t

• O M t s't

-t-f* + t -? ? -f -c + A e e1 ? 3 an + *** M M M f @ N O e

• so ? tA t*t is 4ed e9 O O. O O O O'? O u. O... O U u G O U O O O, O, v t> c O G O O O M. O r2 O O o u Q O. O O O % U. C D

= Ms i O mQ I e e O a f

• M M.J

1. V V V V V V v v v vvv v vv v v v v vv v v% v v v v v V v v v vvv V V V V V V Q

ra se d

• em U t 4

J m bO C. 9 O O. O v e C: C. XO Z G O i M e 9 n < > iaJ I C O f J S -d f J @ 4 '4 O h 4 m () a m c1 m f J ? 4 M O O M O " M C N

• M CO d f J P @ OJ O O 84 O N "l

s s. sssssssst sssss.sssssssssssss e D lJM yw 0 O tJ **

• tJ G O m (J M O e4 facd O - =g rd O O m fJ et omt4rJ G = m tJ C o - (Jrdv2 m m aJ Omm

.J e s s s s s s. s s s s s.) w w< o r. 8 m es m M

• i t - ? -? #.* LS a 6 d g 3 o fi N N N N N co + 3 t3 c3 & & & & O O O O O m m M M e. f 4 CJ E

QQ eQ eJ 9 OOOOOQOOOOOOOOUuoGOCOOOOOOOOOOOmmmmmmMmMM em W eJ O 8 .J i.J Q D ei o p e e& i F-g u 0 es M M fe Uui J e E MO 3 d a4 <( O 8 V 4 M f

e a l 6 1 I 4 ) = 1 ai A es s e-t l

• . 6 3 e O

O O m 1 m e o e, rm m Z4 8 O 1 -Q t f. es e* 4 4 .J 4 Y O j C. 6 M C f3 O - 1 M V e J 4 f a 3 d M 9 W J t .uf

1. "o 1

L C e O O C' I* e l tm em 4 st. =4 Iu 8 O 4 m e Q g en g e. em ee 1 4 I e g -J t V

• = a N 0 3

ZM O U. C I ee O O til QC U w I M Q 4 6 !I XG 1~ X = l he m 1< q g t*J >= Z t d of J I OO M i .? ? 4* CJ Z n cs oc wo ee a p. 4 a m m. m.= e e? e e e? ?m ss sa -*.? s ? ea m.+ e m m m --J s*.= 4 m m m.?.+ m ?.c.3

• 7 e

m p. 6 OObQh O O O O O Q O.Q.C. O O C O O C O O G O e.tO O O O O Q O Q O O O Q O Q W y wy a e e e se eo

• a ea e

e e e e e en M I 1 O >= >e J 6 Y V V V V V VV V V V V y v v V V V V V V V V V V vv v b V V y v v vv vv v ,"J \\ i J p6

• Q c in e-.

Z - e O = e -O eo e. M ET Z 8 O O e I (*3 e.o m W e c3 O f J CP 4 t J P e e9 O N ? s=4 O S e4 0 0 #J 7 4 m O 4 m O Ps M C f'= -? -4 C e.h f 4 O @ f 4 e O e' ON Z D U p= a o f 4

• es t4 o O m a J #9 t' eseJ(J O

.-4 = 4J O O e t J #9 C M f J f 4 O e-o M iJ O G m CJ f J O m e4 e J O ee * ** J .\\ e\\ \\ \\ \\ \\ w \\\\\\\\\\\\\\\\\\\\5 N N \\

• 4 \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\.ec\\ N N \\ \\ N.

hLa 4 0 C W J m e9 M ?< .* *.? m m h LT c + 9 @ N NN' Ac".Q(7c ee&&OOoOo. e a ce cJ (J f 4 L 6 oe o e O O O C C 9 G G G U G U U C C C G G C O O O O O G G G G O O O m et en ce m ee en re m m ee =e O e -J W Q \\ et e.= 0 i r-e; u I ed h Ei i M LJ f

1. 4

>= C3 5 U e' C 8 t= w 0 es 41 0 3 e

s I

• B M I W

w I N J M t 2 t N Z h us O O O O C M 5 P9 LO M PS # -t J st * @ @49 @ 4 O @ + +0 4 @ t 4 O t # M d O t d P* M M J @ A d 4 @-1LA @ C. 0 0 0 0 0 0 0. em 0 0 0 0 0 0 0..e O000000000.OM O O O O. O O. O. O O O 0 0 0 0 M Ms S q/) MQ t .a e e

• M MJ 8 V V V V V VV V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V Q

Ma % 8 W m ZM U f C O M U w a O O. C QC 4 I tJ R R XU Z e o M6 O e ,( M 1 O 4 mwe e as e4 & 4 c4 e o e O N t.4 c0 o es o Ltt eJ e o 99 O -O M C N M o N 4 m e @ ed e @ eJ & c M C N 2 3.J U >= 8 O e4 m ** ed O O M f 4 M C M e4 < 9 OM = ed O O M ed to o== e4 cJ O M M (JOOM e4 (J 4J M M te O M M +4 6 = WW 8 NNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNN*g NN W L d4 CQ JO I M f J M M M d 1 -t t t 2 t? @ L14 -0 O 4 N N N N N c) O O.o e e & e o o o o O M M M M (J tJ eJ L d 0 0000000000000000000000000000000M MM MM MMM M MMM MJ O 6 J w 4 U i 4 M U 8 @ p 4 eN g u I M M Q J B e M wi M Z MO B O 4 40 a MU I l l i

e TABLE XIX Cot 3T. AtlALYTICAL DATA 70R HILK sat 1Pt ES ST ATIOtt COLLECTI0tl I-131 COOL ' OATE (PC/L OF tlILK) E 79 02/01 <.07 04/00 .06 i.03 04/09 <.05 04/16 <.04 04/23 <.04 04/33 <.05 05/07 <.i 4 05/14 <. 0' 03/01 <.04 05/03 <.04 06/05 <.04 07/00 <.04 08/0o <.05 11/12 <.C5 Ala.'UAL t1E All .046 i.019 i litDICATES PLUS OR t1174US sigil

'* 9 3 8 w I >= 0 4 1 3 i O O M M t C N 4 Zk t O O Ce N N 4 I J B V V N I U I O O G 8 O M Q w 1 M M l

• • l M $

w a i d M i G. OI O O fJ C M N m M Z. & O O 4 A Q i es N N es se 4 e M J t V V kJ \\ I 5" M U l c see e O O m x8 = 1 O Q N W M-X 0 4

e W >

M I .s aC J I CQ M i M 4 4 M O @ 4 4 =4.J E1 Oe @4 e m44m44m4 e 4 m 4 4 -t 4 4 -? e 4 O e e e 4 O O O OMO M O ooW4NO44A M I ? 4 M -t 4 po M 4 M6 8 OOOOO OO OOOOOOOO OOOOOOOO oo O fd O O OOOOOOO O U MQ e e e e eo es e e se e e e e es ee es e se es e e e M 6 3 d M MJ G d V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V M s e .J U l 4 t 4 tJ f tJ f k M 4 L I O 4 e O O O M @ fJ M. M - = C 2 w I e e e e 3 I Q 5 i M i o M LJ B C O fJ @ 4 PJ & -C M O N 4 M C 4 M C L-i fJ P 4 M O 4 M C N M C N -t M O m e4 @ @fJ&OMCN 2 3 U r= I O ed M M fJ C O M fJMoM fJ f4 O M M f4OOM CJ M C M s J cJ C M M (J O O M f 4 cJ O M M (J O M M -J and 4 4 ',\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ N N N N \\ \\ \\ \\ \\ \\ \\ \\ N N N \\\\\\\\\\\\\\\\\\\\ 4.e Ek .J Q I ** eJ M M m '+.? 4 4

• m e m e 4 4 ( 4NANNNOOCC&&c&OOOOOMM M M fJ f4f4 E

.J G OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOM MM ** M F M M M M M M M Q l J e.J U t 4 >= 2

• i t-V o.

a M l Q 5 i Mwe M WQ f C 4O l >= U l M 8 e

l 1 i I I l i i l l l l r l l 6 I e I a. g l 6 t .X I W J 4 .J w e M em 4 @Cr4 M b" CL E 8 -. mm#ee O. e m OO.eeeeeN O. m r m 4 O O O. O. e m m., r o.r e.7 (J. .n .rmrrmm o .M t. Q O O. Q O... Q. O.... O O O. O. O. O.. O O O O. ^ O. O. O. u. o O.fJ. O ...... O O Q O O O O O. O M B p oa 4 O f f M M . V V V V V V V V V V V V V V V V V O Q 'J M.sl 8 V V VV V V V V V V V V V V V V V N e s D"* w U f M NM M eOON .J a. C CL 4 O. 4 M M Q (J. O. (J M

• t C

U - p e Z F 4 ft XO I O Pe hs, b 9 2 y, w s e. m 4

p. LJ I d O f J @ 4 (J e 4 M O N 7 s-e c0 0 M C 0 eJ e 4 M C 4 M O N #9 O N ? M M c f J C* O ca o c e O N

= 3 w 1 O (J e4 d fJ O C **f4ti o a f J re O ** M 1 O M CJ cd O e4 M (J O O ea (J (J O ** e9 Uw U.8 (J O O e-o e'J '\\ \\ \\ \\ tJ C e4 d 4 6* .J 4

• T 1 % \\ \\ \\ \\ \\ \\ \\ *N e - fJ M M M + + 4 4.\\ \\ N \\ \\.*3 @ -o o N N N N N O Q c

s % \\ Nc ? o &&'. N N N \\ \\ \\ \\.N p's N N N .NNN s.( \\\\\\\\ W 49 C. .* O ta m to O O O O c m ee ie eJ cd cJ L O .J Q 4 .J l OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOM**Mcedacemegeeemm w m

p..J C

s J w aC U e < w W t @ Q .J

• C M

I N CL U g >= C B" 4 Q J M -w i I > O 3 Z i 4 40 4"

• U I

M 9 i I i I l l t I l \\ ~ =,

) R. l. l. A. W. 0 0 5 3 7 7 5 F 0 0 H. C 8 7 A L. /. C. 0 0 P. 1 3 8 ( 1 1 9 ) K. L. I M._ 0 0 3 3 7 1 5 F _ 0 0 H. C 7 6 A L. /. C. 0 P. 1 0 3 ( 1 5 7 ) K. l. i. 9 8, 3 H. 0 3 9F - O ) ) R A A SL _ ( / _ ( C. 8 1 0 P. ( 1 4 3 ) K L _ I.H.. 9 1 8F. l l - O _ 0 R A A 0 SL _ t ( / _ 2 C _ P _ I 2 I S K. E L. P i 54 64 6 3 53565 8 S i L l l tt 1 . 45444 0 0.4 00.454466 0. 7 0.545444 555 5 0 0 0 0 0. 3 4 I G t e554 45 1 S I A 3F. 00000 0 000000 0.;00000000020

a. J 0 0 0 0 0 0 Y

S S 1O L t S A K IL. < < < < < s t U T L /. A t J Nl C. 23 87 0 6 55604 9 i i 0 1 1 1 0 H t Ot P. 21 41 2 31 t C I I R P XO H T C IF 0 S X 1 O 3 A TE _ S 0 *< 9629630741861 65296306307307418509529S307 t L U 3 00 1 0001 0301 0001 1 000123012001 100010001 1 O01 1 A L ET CT _ //" /////////// < / /////////////////////////// E LA EA _ P ED LD _ 1 2T 3344444555566661777783389999000001 1 11 000 N E A L . 00G 000000001 00000000000000000001 111 1 1 1 1 1 11 1 L S TL O L P E A C A T C . 9 A U I . 7 lt S C T l I ) t A 0 L O 3t lD t i A IE. l TD J I l tA AO A TC. i S I

_m-TABLE X'IX COtti. At1ALYTICAL DATA FCR ttILK sat 1PLES ST AT IGil COLLECTIO!I I-131 COOL DATE IPC/L Or itILV) L 79 02/01 <.05 0'+/00 .05

.03 04/09

<.05 04/16 <.05 04/23 <.04 04/33 .1 05/07 <.04 05/14 <.C5 0S/01 <.04 05/0S <.05 06/05 <.C6 07/00 <.05 05/06 <.04 11/10 <.04 Ata1UAL ttEAta .051

.031

IllDICATES PLtJS OR ttitAJS SIGli

= 80 M h 9 G.J 4 a 8 >* s M Li N

e. e. o.

.r r r e s e.r e o. G r. ri = , n ~ 4 M a. I C..a ooa o. C. O Q O Q Q o O. M m ye Q 3

• +

e em M a e

• M HJ B V V V V V V V V V V V V p

>.4 % 8 4 m 2M U $ 4 C b$ Q= 6 o. O. E s s y 7 C1 XO 2 Q e >e w o a X M 4 M 4 9w e w e4 & O M o N # m c d eJ 0 tJ = D W t= QF $ (J C 0 M (J M C m ed e 4 (J O Q e4 e4

==4 4 4 w4 6 %N NNNNN\\\\%NNNN 4 QQ 4Q 8 f4 ? 4 t v* P M b1 m W O P* O as E .4 8 O O C C C O O O O Q O O O ** M 4.d O 8 ed w >= 4 y 9 4 M U t @ p 4 im g u 4 Q >a 5 s 4 -w i i 08 : -u, M l

n O a l % 9 m a t O J = 9 -? d M Z a E l C O O O4 E M t 2 4 + c ? ? -O L9 49 L* t LA

• N
• m # itt t hh 4J -t M t e LA C A L%

-O e ? m.A e 6 f ** e m 4 ns t G00000000 C. O u. C C. O. O... O. G. U. D. O a O. U U O. O G. O O.. G U O. to. O. C O C. O O. a O o o mQ s e a m e og mJ evvvvvvvvvvv vvvvv vv vvvvvvvvvv vv vv v v vvvv vvw 0 g ss \\ s ed U t fJ 4 A w = B= aa m C O < = Z U w I e F M Q Xd 8 Q mw U e = X t O 4 >W 9 OM ed ? -3P4 & 4 M O N ?

• O D M C hhtJ & 4 M O 4 M C f* M O N f m t-3.tl fJ @ m eJ P O M Q N O

3d l.aJ >= U= 6 OfamMtJCOmtJKrJm(Je4oamedCOmtJMCesJ(JCmMt. O G M (J tJ C m m tJ O = m 4 H \\ \\ \\ %. \\, '% \\\\\\\\ N N\\\\\\\\ \\ \\ \\ 's \\\\ ' \\ \\ \\ %, N *. " 3 %\\ \\\\\\\\\\\\\\\\\\\\ w M 4 m tJ M M #9 ? J fs?

• e's

.e 4 had 4 1 m O A -3 4 0 4 N N N N f-s3t",d 4 e @ CeoooOOmM -= m to c J c J g Q OQ a C,, a 4 4 6 0000000000 OOGCOCCOOOOOOOOGGC000mmmmmmMmmmmm m W >d O J u 4 U 1 W = U 8 @ O m M m I N t. U M E C

• O 8

4 A p a a i n 2 4 mue m m Q 0 3 O 4 40 e HU t w O f I l l l l l i 1 1 i (

4 7 6 9 s 1 5 8 8 1 2 1 0 0 4 0 0 m 1 3 r 1 1 3 8 a 0 5 5 9 1 3 1 5 4 4 4 4 F 4 5 3 3 4 t ! 4 i 1 4 4 4 4 5 5 1 t 5 4 5 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6 6 8 8 2 9 l 5 7 1 5 4 l 0 2 A 0 0 0 0 s m K r) 6 8 7 E aE 6 3 2 6 E F 6 5 3 7 8 0 0 0 5 0 0 3 3 8 3 3 7 5 8 3 3 0 0 4 4 4 4 3 5 4 4 4 3 5 4 5 4 W C 3 5 3 3 4 t 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 n B, Y 1 i 1 R at A 8 3 6 7 K. s( 7 5 2 0 0 0 i l l A D M M G N I I S 1 i 3 1 l / E i N C 1 P s 1 m X 1 F r 0 O a X 1 F) 9 1 E F S N 1 9 4 L O T e M, 0 8 5 0 0 t 0 0 1 0 3 8 3 3 0 0 8 3 0 0 5 0 B I t 8 5 A N N a. 0 0 0 0 0 4 5 3 4 4 4 4 6 4 4 4 5 5 6 5 5 5 4 5 7 T O U I. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 i t 2 I ! t T N eD s 8 < < 4 < < < < < < < 1 A m( 4 1 1 I R r 0 f S te N T t E L n C l I i N S O E C R NAE M 9 7 9 7 1 3 1 s 9 8 0 2 3 3 2 m) 1 0 4 0 0 1 6 r I., a 3 3 4 0 0 3 0 3 7 0 8 0 0 0 5 0 FI 4 5 3 4 4 1 t 4 i 1 4 4 4 4 5 6 1 i 1 5 4 5 4 I, 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 rG l 0 8 2 0 8 8 a( < < < < < i 8 1 3 6 4 2 0 0 0 e N no 1 2 2 9 6 2 9 6 3 0 7 4 8 6 1 S 5 2 9 6 3 0 i 1 t e 8 / 1 1 2 0 0 1 2 3 0 1 2 2 0 1 I 2 0 0 1 2 3 ct / 2 / / / / / / / / / / / / / / / / / / / / / ea 1 3 3 3 4 4 4 4 4 5 5 5 5 6 6 - 6 7 7 7 7 7 D 0 l 2 l o / C 2

C N N T? N - f C 4 N N E. ' C. N. M. C. C. L C' 'C 4 C C T T M st N ts. I m m f*"5 +f M st +1 +t +1 +t +t +1 st -t st C 4

• t st t

-1 -? C. C. C. O. C. C. C. C. C. C. C. m e y; e st .=' V V v st v v v.* - C C 4 t/' v v v v v v v O C C. T M E W 6 e' W T Wl 3 Es. C N O C m m f% m C C N N m C M M N N N O, 4 m M -1 st C. st -t c st st st -t st e st c st 4 st g: C cc ' C. C C C. C C. C C C. C C C. C. C. C. C C. C. C.

• e c.'

v v v v v v v v v v v v v v v v v v v v M w <l Zv .y Y U C Z to N m +r 1 W N .a Z C O C C C T U C E ta. L C c X L. A ^, -1 C Z Zj W s .v C C - 2,l A = a C r f f f. f C f r c c C D e O C D C C C 2 9 st m m C JC -s e st st st -1 c vt N 4 ~t c <p p .l - C C C. C. C. C C +1 O C. C. C. C. C. C. C. C. C. C. C Z ", C. Y v v v v v v v c v v v v v v v v v v v Ev N 2: 5 L C. Z i W F. w U C

• C C

C '?x k rg Z< l N de 7 N: N t -1 N m oc e E ^' C. N. N - N. C L -I i i el C C m N N N C & C C C N l Es. =l c -t t +1 -t C e +t +t +i +e ,a +1 e st e N -1 st 4 I L c' C. C. C. C. C. C. C. C. C. C C. C. N C m e st N [ V V V Y v v y V V V V v v t.; vi N. C. C. \\ g l l l C, W b u wl %m ?S N C g g O - - N C .--e j

• a N N % % % % N % % % % % %

C =. N O O - N N C O! "JC

• J)

% Z 7 7 7 7 .C .C .C. C .C PJ N P J. ~- [ Jun i wU l l

TABLE XXI C0flCEllTRATIOT1S OF GAf11A ElIITTERS* Ifl f11LK Resul ts in Uni ts of pCi/1 t 2 sigma Env. Station Samplire fluclides Found flo. Date K-40 Cs-137 J 2-20-79 Il00fl10 3.5 0.7 4-02-79 10001100 4.St0.8 8-06-79 11001110 2.4 t 0.7 11-28-79 14001140 <0.8 For typical minimum detectable levels of nuclides searched for and not found, see Table XXVII.

I I ( l l I I l e a & -?

1. 9 eN

.? c O O. Q-M OO O O cJ F i +

• m t

e. O Ig -.....

.e.. O e 01 e V a oe tlY H e d@ fJ Nd f Pm O t 1 e=e M f4f4 Ea m m t - e o e e i 1 0 e 40 MM GO 9 O O. O. l 4M -f e e e 9 l O. O. O , g..... M @ >= 1 v V V r $J s > 0 .J q c e M ts O 44 = ts Ge C D NM 9J Q m. M. ya 4 e e % := @M 9 G S e t i i mO 8 O Q% 8 W 4 kJ l 6n ty 9 f4 O m te M. m. e O. O. pf *w l Xb O. i l V V V V V V V V V xm; oi w FM $ naJ 4 m o I J a= H I Q<4 e6 Q 1 M P= 1 =J 2.e 9 4 C O,

a. i I

fJ m e ce ce @Q Li +N l UU 1 e r 8 M.. C. O 4 .. O. O My Ca 4

• W

@ O 4 O -8 40 e-p V V V v V O I > I O l (%' O 1 st me i 4 M 1,J s (4 e m. f J. r* O h t 8 n & W D C' I* 2 8*' N f*- f = 2 3 l L'* C **. Gm .i a U. t o si es < 1 %% W \\% W \\\\ .aJ C. .d C D G ** G 4* L ~4 .J 0 Om Om on O 9 J J J W w a n er I @ Q g g aug i e-r- r-u I m e.,, m i 0 4 4 4 p 5 e 2 >= w a me >G t fJ .C s et G # to >U i D t I I

TABLE XXIII C0flCEllTRAT10fl5 0F GAMMA EMITTERS Ill 50ll Results in Uni ts of pCi/g(dry) Env. Station fio. STATI0fi 2 Average STATI0ft 3A STATI0fi 5 Average of RMC Designation Site Dis ta nt Date Loca tion tocations 6-09-79 11-17-79 6-09-79 11-17-79 6-09-79 11-17-79 fluclides Found Be-7 top 1" 0.6s0.2 <0.3 0.510.4 <0.1 <0.2 <0.1 0.3t0.2 0.20.2 to t ton < 0.1 <0.2 <0.2 <0.1 (0.2 <0.1 <0.2 <0.2 K-40 top 1" 2142 10t1 16 16 14t1 1712 25t3 1922 1919 bottan 21t2 12tl 17 13 1111 18t2 26t3 20t2 19112 Sb-125 top 1" <0.06 0.21 f 0.08 0.1410.21 <0.05 <0.06 <0.05 <0.05 <.05 bottan <0.05 <0.07 <0.06 <0.04 <0.06 <0.04 <0.05 <.05 Cs-137 top 1" <0.06 7.3!0.7 3.7210.2 1.3t0.1 1.0+0.1 0.65t0.07 0.32 t0.03 0.8210.82 to ttan 1.0!0.1 3.3!0.3 2. 22 3. 3 0.56t0.06 0.63 0.06 0.10t0.03 0.47!0.05 0.4420.47 Ce-144 top 1" 0.390.2 0.220.1 0.3t0.1 <0.1 <0.1 <0.1 0.10t0.07 0.1 bo ttom <0.08 <0.1 <.09 <0.07 <0.1 <0.1 <0.1 <0.09 Ra-226 top 1" 1.1t0.1 0.8720.09 1.010.3 0.6710.07 1.0!0.1 0.90!0.09 0.93t0.09 .88t.29 bo t trxn

1. 3 t 0.1 1.310.1

<1.3 0.84f0.08 1.3t0.1 1.120.1 1.0t0.1 1.130.2 Th-232 top 1"

1. 2 + 0.1 1.110.1 1.2!0.1 0.64t0.08

1. 2 t 0.1 1.110.1 1.2t0.1 1.0t0.5 bo t txan 1.490.1

1. 3 ! 0.1 1.4t0.1 0.5230.05 1.3t0.1 1.120.1 1.3t0.1 1.1 0.7 Others**

too 1" <llDL <MDL <MDL <l10L <MDL <MDL tot tom <MDL <MDL <f1DL (MDL <!!DL (MDL For typical mininun detectable levels of nuclides searched for and not found, see Table XXVII. 0 l

t I 4 e M t 4 N

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• . %.e I t

IABLE XXIV (00ttTB f10tliHtY TLD RESULTS RESULTS Ita 12811S OF F1 RAD 5/SID. F10t!THe ST ATIDr8 79 79 79 79 79 79 79 79 79 79 79 80 LODI f fr/.t13. AVG. 01/06-02/10 02/10-03/04 03/0,-04/07 04/07-05/06 05/06-06/02 06/02-06/24 C6/24-05/04 08/04-09/01 09/01-10/07 10/07-11/03 11/03-12/02 12/02-01/06 218 7.52 i 1.09 7.0181.06 6.8'30.29 7.62:0.27 8.27;0.41 6.8650.52 6.t630.30 6.81;0.54 8.05;1.90 6.91;1.26 7.*3;0.54 7.83;C.84 7.5J50.71 22 7.15. 1.12 7.14;1.03 6.7130.60 7.24;0.22 EAl 6.98;0.92 6.4430.66 7.00;1.04 dAt 6.44&l.62 7.5540.71 8.25 0.79 7.58;0.65 23 7.56 1.92 8.09so.41 6.3110.16 7.42;1.70 8.6881.52 7.1930.59 7.19;0.46 7.18;0.30 8.4831.92 5.79;0.22 7.1610.00 8.93;e.98 8.25&1.05 24 5.61. 1.50 6.18;0.50 5.2030.23 5.53;0.85 6.36:0.47 5.28;0.43 5.3350.3% 5.34;0.48 6.4350.72 4.02;0.32 5.\\ . 47 6.tS;1.42 5.0233.14 26 7.06 1.60 8.8430.64 7.1730.68 8.00:0.42 8.43;1.24 7.66;0.44 8.2851.33 7.40;0.78 8.1381.09 5.93&0.45 7.60;0.52 8.69&O.32 8.3230.88 27 7.7c. 1.54 7.65;o.34 7.2230.78 7.66;0.72 8.47;0.41 7.86;0.51 7.5750.66 7.6250.78 8.19;0.35 5.8940.31 7.4230.59 9.09 & C.57 8.04;1.32 11 7.34 1.10 7.4130.69 6.30&0.29 7.6130.45 8.13;0.66 6.6930.78 7.13;0.46 8.29;0.33 7.46;1.0 3 5.23;1.27 6.5810.49 8.3440.67 7.97;0.31 32 7.t3 2.64 8.57;0.61 6.25;0.72 7.54:0.29 8.56;0.09 7.7930.79 5.0730.40 9.1630.83 8.96;0.86 5.93;0.46 7.2*;0.97 8.8330.54 8.34so.5S 33% 5.61 1.57 5.5110.48 5.25;0.22 5.58;0.10 6.1160.36 5.24;0.45 5.55;0.75 6.14;0.67 6.45;0.60 3.75;0.21 5.10;0.95 6.8110.83 5.ES;0.31 38 7.71. 2.24 7.90;0.63 6.84;0.18 7.88;0.36 8.76;0.18 7.05;0.75 7.89&0.27 8.14;0.71 8.7950.68 4.91;0.81 809 8.3710.83 8.4130.78 S T A tic!8 79 79 79 79 79 79 79 79 79 79 79 83 ff" E TOV.Wr.A\\G. 01/03-02/12 02/12-03/05 03/05-04/09 0e/09-05/07 05/07-06/04 06/01-06/25 06/2*-08/06 08/06-09/04 09/03-10/03 10 /C 3-I I /05 11/0 s-12/0 3 11/29-61/0 7 1 211 6.11 1.26 6.16;0.59 6.4130.53 6.20:0.88 6.48.9.53 6.62;0.82 5.9230.55 5.28;0.84 5.6*;0.83 5.4550.52 e.5oLO.64 7.00;0.50 5.63;0.12 f.*. B fin STOLEll 8 0 3 TLD 5.'ttPLE 01r100 LJA5 FRutt 04/09-05/G6 fCD fl0 LP01 Iti 7t4At :015 (D 6 St rif t"'.I R WE SUL IS t.RE ti.TR Itr/ESTIG ATI0t4; SE E TEXT

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