ML20238A430

Regional Environs Radiation Monitoring Program,Rept 32, Jan-June 1975

ML20238A430
Person / Time
Site:	Peach Bottom
Issue date:	06/30/1975
From:	INTEREX CORP.
To:
References
3237, NUDOCS 8708310075
Download: ML20238A430 (153)

Text

{{#Wiki_filter:'# QETS MASTER FILEJ 9 _, ri l (gi>v-Rijg Q w. M6 e 4 ') (maaow[g gel 0l b So - 463 %4 e " gp 3/ GTfN/ ' ~ ~ ~ ) PEACH BOTTOM ATOMIC POWER STATION FULTON GENERATING STATION REGIONAL ENVIRONS RADIATION MONITORING PROGRAM January 1, 1975 through June 30, 1975 1 .i i REPORT!Ndi 32 i For The Philadelphia Electric Company i January 1976 l ) I INTEREX CORPORATION 3237 3 Strathmore Road Natick, Mass. 01760 8708310075 750630 i PDR ADOCK 05000171 l R PDR l L i

i PEACH BOTTOM-ATOMIC POWER STATION 1 FULTON GENERATING STATION l REGIONAL ENVIRONS RADIATION MONITORING PROGRAM 1 January 1, 1975 through June 30, 1975 J l l l 1 i REPORT NO. 32 f For The Philadelphia Electric Company i January 1976 INTEREX CORPORATION 3 Strathmore Hood Natick, Mass. 01760 i

i'i TABLE CF CONTENTS .- l Page .I. INTRODUCTION 1 II. PROGRAM DESCRIPTION 5 I i A. Environmental Monitoring Stations 5 l and Media Collected l J B. Sampling and Analysis Program 5 III. PROCEDURES 26 IV. DISCUSSION OF RESULTS 30 i i A. Air Particulate 33 B. Precipitation 33 C. Surface Water and Discharge Water 35 i D. Well Water 37 E,- Soil 39 F. Silt 40 G. Fish 43 H. Shellfish 44 l I. Vegetation 46 J. Milk 47 K. Rabbits 49 L. External Gamma Radiation 49 i V. SUMMAE 50

I \\ l d LIST OF TABLES II.1 Environmental Monitoring Stations January through June 1975 II.2 Environmental Radiation Monitoring Program Period January through June 1975 l II.3 Summary of Analysis performed on Samples Collected January 1,197 5 through June 30, 1975 III.1 Analytical Sensitivities IV.1.1 Analytical Data for Air-Particulate Samples 3 Concentration of Gross Beta Radioactivity (pCi/m ) Group I - Peach Bottom Site IV.1.2 Analytical Data for Air-Particulate Samples 3 i Concentration of Gross Beta Radioactivity (pC1/m ) d Group II - Intermediate Distance Locations IV.1.3 Analytical Data for Air-Particulate Samples 3 Concentration of Gross Beta Radioactivity (pCi/m ) Group III - Distant Locations IV.1.4 Monthly Mean Values of Weekly Air-Particulate Samgles Concentrations of Gross Beta Radioactivity (pCi/m ) IV.1.5 Analytical Data for Air-Particulate Samples i 3 J Concentration of Gross Beta Radioactivity (pCi/m ) Comparative EPA Data - Harrisburg, Pa. IV.1.6 Analytical Data for Monthly Composite Air-Particulate ] Samples 3 Gamma Spectrum Analysis - Nuclide Concentration (pCi/m ) IV.1. 7 Monthly Mesa Values of Weekly Air-Particulate Samples 3 Concentration of Zr(Nb)-95 and Ru(Rh)-106 (pci/m ) IV.2.1 Analytical Data for Precipitation Samples Concentration (PC1/1) IV. 2. 2 Analytical Data for Precipitation Samples Surface Density (pCi/m ) IV.2.3 Semi-Annual Mean Radioactivity Concentration in Precipitation IV.2.4 Analytical Data for Precipitation Samples Comparative EPA Data - Harrisburg, Pa. Concentration (pCi/1) j

I LIST OF TABLES (con _t) J IV.3.1 Analytical Data for Surface Water Grab Samples Concentrations in (pCi/ liter) IV.3.2 Analytical Data for Discharge Water Grab Samples Concentrations in (pCi/ liter) IV.3.3 Analytical Data for Surface Water Composite Samples Concentrations in (pCi/ liter) IV.3.4 Semi-Annual Mean Radioactivity Concentration in Surface Water IV.3.5 Semi-Annual Mean Radioactivity Concentration in Discharge j Water IV.3.6 Mean Radioactivity Concentration in Surface Water and Discharge Water by Date IV.4.1 Analytical Data for Well Water Samples Concentration (pCi/1) IV.4,2 Semi-Annual Mean Radioactivity Concentration in Well Water Mean Radioactivity Concentration in Well Water by Quarter IV.5.1 Analytical Data for Soil Samples Concentration (pCi/g) IV.5.2 Semi-Annual Mean Radioactivity Concentration $n Soil (pCi/g dry) Mean Radioactivity Concentration in Soil by Date (pCi/g dry) IV.6.1 Analytical Data for Silt Samples Concentration (pCi/g) IV.6.2 Analytical Data for Silt Gamma Spectrum Analysis IV.7.1 Analytical Data for Fish Samples Concentration (pCi/g ash) IV.7.2 Analytical Data for Fish Gamma Spectrum Analysis IV.7.3 Mesa Radioactivity Concentration in Shad and White Sucker IV.7.4 Semi-annual Mean Radioactivity Concentrations in Fish Samples

LIST OF TABLES (cont) IV.8.1 Analytical Data for Shellfish Samples Concentration (pCi/g' ash) IV.9.1 Analytical Data for Vegetation Samples Concentration (pCi/g ash) IV.9 2 Semi-annual Mean Radioactivity Concer.tration in Vegetation (pCi/g ash) i l IV.10,1 Analytical Data for Milk Samples Concentration (pCi/1) IV.10.2 Mean Radioactivity Concentration in Milk Samples (pCi/1) IV.11.1 Analytical Data for Rabbit Samples Collected from Peach Bottom Site - Station 1 Concentration (pCi/g ash) IV.11.2 Mean Radioactivity Concentration in Rabbit Samples IV.12.1 Gamma Radiation Monitoring Readings I l l 1

l i I l LIST OF FIGURES 1 II.1 Environmental Sampling Stations On or Near Peach Bottom Site II.2 Environmental Sampling Stations at Intermediate Distances from Peach Bottom Site 11.3 Environmental Sampling Stations at Remote Distances from Peach Bottom Site i IV.1.1 Gross Beta Radioactivity in Air Particulate Samples for Group I - Stations lA, 1B & 2 and Group III - Stations 12A & 12D IV.1.2 Gross Beta Radioactivity in Air Particulate Samples for Group II - Stations 3A, 4A, 4B, 5, 6B,14,15, 17, 31, 32, 33A & 38 and Group III - Stations 12A & 12D IV.1.3 Gross Beta Radioactivity in Air Particulate Samples for Group I - Stations LA, 1B & 2 and Harrisburg, Pa. IV.1.4 Gross Beta Radioactivity in Air Particulate Samples l for Group II - Stations 3A, 4A, 4B, 5, 6B,14,15,17, I 31, 32, 33A and 38 and Harrisburg, Pa. IV.1.5 Gross Beta Radioactivity in Air Particulate Samples for Group III - Stations 12A and 12D and Harrisburg, Pa. IV.2.1 Monthly Mean Concentration of Gross Beta Radioactivity in Precipitation Samples IV.2.2 Monthly Mean Surf ace Density of Gross Beta Radioactivity in Precipitation Samples IV.2.3 Annual Mean Concentration of Gross Beta Radioactivity in Precipitation Samples IV.2.4 Annual Mean Surf ace Density of Gross Beta Radioactivity in Precipitation Samples IV.2.5 Surface Density of Sr-90 in Precipitation Samples IV.2.6 Surf ace Density of Cs-137 in Precipitation Samples IV.3.1 Monthly Mean Concentration of Gross Alpha Radioactivity in Surface and Discharge Water Samples - Soluble Fraction IV.3.2 Monthly Mean Concentration of Gross Alpha Radioactivity in Surface and Discharge Water Samples - Insoluble Fraction IV.3.3 Monthly Mean Concentration of Gross Alpha Radioactivity in Composite Surface Water Samples - Conowingo Dam Station 4L and Holtwood Dam Station 6I - Soluble Fraction i i i

LIST OF FIGURES (cont) IV.3.4 Monthly Mean Concentration of Gross Alpha Radioactivity in Composite Surface Water Samples - Conowingo Dam Station 4L and Holtwood Dcm Station 6I - Insoluble Fraction IV.3.5 Annual Mean Concentration of Gross Alpha Radioactivity in Surface Water Samples - Soluble Fraction I IV.3.6 Annual Mean Concentration of Gross Alpha Radioactivity in Surf ace Water Samples - Insoluble Fraction l IV.3.7 Monthly Mean Concentration of Gross Beta Radioactivity l in Surface and Discharge Water Samples - Soluble Fraction IV.3.8 Monthly Mean Concentration of Gross Beta Radioactivity in Surf ace and Discharge Water Samples - Insoluble Fraction IV.3.9 Monthly Mean Concentration of Gross Beta Radioactivity in Surf ace and Discharge Water Samples - Soluble Fraction IV.3.10 Monthly Mean Concentration of Gross Beta Radioactivity in Surf ace and Discharge Water Samples - Insoluble Fraction IV.3.11 Monthly Mean Concentration of Cross Beta Radioactivity in Surface Water Samples - Soluble Fraction IV.3.12 Monthly Mean Concentration of Gross Beta Radioactivity in Surface Water Samples - Insoluble Fraction IV.3.13 Monthly Mean Concentration of Gross Beta Radioactivity in Composite Surface Water Samples - Conowingo Dam Station 4L and Holtwood Dem Station 6I - Soluble Fraction IV.3.14 Monthly Mean Concentration of Gross Beta Radioactivity in Composite Surface Water Samples - Conowingo Dam Station 4L and Holtwood Dam Station 6I - Insoluble Fraction IV.3.15 Annual Mean Concentration of Gross Beta Radioactivity in Surface Water Samples - Soluble Fraction IV.3.16 Annual Mean Concentration of Gross Beta Radioactivity in Surface Water Samples - Insoluble Fraction IV.4.1 Quarterly Mean Concentration of Gross Beta Radioactivity in Well Water Samples - Total Sample IV.5.1 Quarterly Mean Gross Alpha Concentration in Soil Samples 17.5.2 Quarterly Net Beta Concentration in Soil Samples IV. S. 3 Semi-Annual Mean Sr-90 Concentration in Soil Samples IV.5.4 Semi-Annual Mean Sr-89 Concentration in Soil Samples IV.S.5 Semi-Annual Mean Cs-137 Concentration in Soil Samples

LIST OF FIGURES (cont) IV.6.1 Quarterly Gross Beta Radioactivity Concentration in Silt Samples IV.6.2 Quarterly Sr-90 Radioactivity Concentration in Silt Samples IV.6.3 Quarterly Cs-137 Radioactivity Concentration in Silt Samples IV.6.4 Semi-Annual Gross Beta Radioactivity Concentration in Silt Samples IV.6.5 Sr-90 Radioactivity Concentration in Silt Samples IV.6.6 Semi-Annual Cs-137 Radioactivity Concentration in Silt Samples IV.7.1 Q2arterly Mean Concentration of Net Beta Radioactivity in Fish Samples IV.7.2 Quarterly Hban Concentration of Sr-90 Radioactivity in Fish Samples IV.7.3 Quarterly Mean Concentration of Cs-137 Radioactivity in Fish Samples IV.7.4 Quarterly Mean Concentration of Net Beta Radioactivity in Fish Samples IV.7.5 Quarterly Mean Concentration of Sr-90 Radioactivity in Fish Samples IV.7.6 Quarterly Mean Concentration of Cs-137 Radioactivity in Fish Samples IV.8.1 Annual Mean Concentration of Net Beta Radioactivity in Shellfish Tissue Samples IV. 9.1 Annual Mean Concentration of Net Beta Radioactivity in Vegetation Samples IV.9.2 Annual Mean Concentration of Sr-90 Radioactivity in Vegetation Samples IV.9.3 Annual Mean Concentration of Cs-137 Radioactivity in Vegetation Samples IV.10.1 Quarterly Mean Concentration of Sr-90 Radioactivity in Milk Samples IV.10.2 Quarterly Mean Concentration of Cs-137 Radioactivity in Milk Samples IV.10.3 Quarterly Mean Concentrat*on of I-131 Radioactivity in Milk Samples

l l l l LIST OF FIGURES (cont) { ? IV.11.1 Quarterly Mean Concentration of Net Beta Radioactivity in Rabbit Muscle Samples IV.11.2 Quarterly Mean Concentration of Sr-90 Radioactivity in 2 Rabbit Bone Samples f i i i 1 1 I 1 5 Q l ____--______ _ _ _ d

I. INTRODUCTION A pre-operational environmental radioactivity survey, initiated in March 1960, was conducted by Nuclear Science & Engineering Corporation for the Philadelphia Electric Company in connection with Peach Bottom Atomic ' Power Station located in Peach Bottom Township, York County, Pennsylvania. The initial loading of fuel into Unit 1, a 40 We (net) high temperature, gas-cooled reactor, was started on February 5, 1966, and initial criticality was achieved on March 3, 1966. The final shut-I down of Peach Bottom Unit 1 for decomissNning was on October 31, 1974. For the purposes of this monitoring program, the beginning of the operational period for Unit 1 is February 5, 1966. A sumary of the Unit 1 pre-operational monitoring program is presented in a previous ) 1 l report. (1) l l ( i Peach Bottom Units 2 and 3 are boiling water reactors each with a power output of 1050 We (net). First fuel was loaded into Peach Bottom I Unit 2 on August 9, 1973; criticality was achieved on September 16, 1973, l and full power was first reached on June 16, 1974. The first fuel was j l loaded into Peach Bottom Unit 3 on July 5, 1974; criticality was achieved on August 7, 1974 and full power was first reached on December 21, 1974. A pre-operational sumary report (2) for Units 2 and 3 has been issued f 1 previously and summarizes the result.s of all analyses performed on ] l samples collected from February 5, 1966 through August 8, 1973. Detailed I program description, station designations, reporting units, abbreviations, etc., are given in that report reflecting the program status at that time. 1 I Where changes had been made from the original program, they are indicated in the appropriate sections of that report. i

) l In gennral, any such chengas have bssn made to inersass tha scope and i specificity of the program to fulfill the program objective. j Since the Philadelphia Electric Company's proposed Fulton Generating ] l 4 Station is located across Conowingo Pond from the Peach Bottom Atomic i I Power Station, its pre-operational-radiological monitoring program has been combined with the Peach Bottom Program to form a joint Peach Bottom-f Fulton Regional Environmental Radiation Monitoring Program. Only a few 1 Fulton oriented monitoring Stations have been included up to this time. In 1967 site preparation for Units 2 and 3 at the Peach Bottom site was undertaken; this has resulted in certain physical changes which required moving to some degree some of the original sampling stations. Also, beginning in 1971, several sampling stations of significance to Units 2 and 3 were added to the program. In 1973, some additions and changes were made in the analytical requirements to reflect the latest recommendations of various government agencies. These changes are detailed in a previous report. (2) This report summarizes the results of analyses performed by Interex on samples collected during the period January 1 through June 30, 1975 in the Interex portion of the overall j Philadelphia Electric Co. regional program. The responsibility for performance of the environmental radiation monitoring program has been modified several times since the Peach Bottom Unit 1 pu-operational program was first undertaken in 1960. From the start of the program until the first quarter of 1969, a sir.gle laboratory located in Pittsburgh, Pa., was used. This was initially called Nuclear Science and Engineering Corporation and later became Nuclear Science Division, International Chemical and Nuclear Corporation j as the result of a change of ownership. During the first quarter of 1969, l i _ _ _ _a

i the program was transferred to ICN/Tracerlab, also part of International 1 Chemical and Nuclear Corporation and was performed by ICN in the Waltham, J Mass., laboratory until the end of the first quarter of 1972. At this l l time the program was transferred to Interex Corporation laboratories in 1 Waltham, which is presently carrying out sample collection, analysis and report preparation. The Interex Corporation laboratory was moved to Natick, Mass. in May 1974. During the various change-overs and moves, extreme care was taken to insure that continuity in all aspects of the l overall program were maintained. For exemple, samples were collected by the same individual throughout the entire period. The objective of this program is to acquire quantitative data for the concentrations of radioactivity in environmental media in the vicinity j of the reactor site prior to and during operation of the reactor plant. These data are then examined to determine the extent of the impact of the plant or plants on the environment as reflected by any changes in the radioactivity levels from those observed during the pre-operational survey. Generally, this is done by corrparing the observed levels at those sampling stations which would be expected from various considerations to show mar,imum effects of plant operation to levels at stations remote from the site. When possible, comparison is also made to data obtained by various government agencies. Since there are both natural and man-made radioactivity present in the environment which are not related to plant operation, it is important to understand and adequately measure these contributions. A number of radioactive elements occur in nature. The most importar.t of these are urautum and thorium, along with their respective radioactive _ ______

i decay products, and potassium-40 (K-40). The concentration of natural radioactivities vary with geographical location and with time and are j primarily dependent on the concentration of the respective elements in the constituents of the lithosphere. Therefore, environmental radioactivity measurements must be performed at a number of locations representative of l the general geographical area of interest. j 1 Other radionuclides have been introduced into the biosphere as a result of the detonation of nuclear devices in the atmosphere. A significant fraction of these nuclides is generally disseminated through-out the upper atmosphere with the fine particulate debris from the 1 l detonation, Varying fractions of the nuclear debris eventually are deposited at ground level, principally.in conjunction with precipitation, After their arrival at ground level, the radionuclides enter soil or j bodies of water, and varying fractions may enter drinking water supplies or be assimilated by edible plants or animals and thus enter the human food chain. Natural radioactivities are also introduced into the human diet by analogous ecological processes. The deposition patterns of nuclear debris depend on many factors, including latitude, proximity to detonation sites, annual accumulation of precipitation, and the frequency, magnitude, location, and altitude of the detonations. In the absence of detonations, seasonal variations have been noted for several years, including maximum deposition rates in the spring and summer months and minimura rates in the late fall or early winter. Distinct variations have also been noted in individual precipitations. These latter variations have been attributed to variations of meteorological condit-lons prevailing during the respective _ _ _ _ _ - - _

precipitation events. Since significant geographical and temporal variations are expected in the concentrations of both natural and artificial radioactivities in environmental media, it was necessary to acquire experimental values for their concentrations over a period of several years to achieve statistically-significant data. Such an approach also provides data for seasonal or annual trends in the temporal behavior of these concentrations and permits correlations of these trends with meteorological or climatological factors i or with known injections of artificial radionuclides into the atmosphere. II. PROGRAM DESCRIPTION The program as it existed at the end of the report period is described below. Since its inception, several changes have been made which expan.ted the program to better accomplish the program goals. A. Environmental Monitoring Stations and Media Collectg The environmental monitoring stations are described in Table II.1 and are shown in Figure II.1 through II.3. In general, stations have not been moved significantly since the start of the program. i Beginning in 1971, several new stations were added based on the changes in water flow pattarns, etc.,' caused by construction of i Peach Bottom Units 2 and 3. Also sampling stations were given more specific numbers and descriptions to define more precisely each location. Several sampling stations related to the proposed Fulton Generating Station were added to the program during 1974 as described in section II.B. B. Sampling and Analysis Program The types of analyses performed, the frequency of sampling and

v i l l ~ analysis, the locations of simples, and - the number of semples per

station scheduled for each' location as of the end of the report s

period, are given in Table II.2. l Station 6I, a continuous water sampler operated to sample 1 water flowing through Holtwood Dany, was added.on January 5,1975. This provides a comparison with Station 4L, sampling water flowing through Conowingo Dam. In this report period the regional f arms were regrouped with respect to PBAPS into a near group - Farms G, H, and J, an intermediate ' distance group - Farms D, K, L, M, and N, and a distant group - Ferms i A, B, and C, for presentation of results. Previously Farm D was included in the distant group because it was believed that Farm D was of sufficient distance that it could not be affected by PBAPS releases. This was found not to be true under all conditions. Fish Station 60 was replaced by Station 6H to provide a more reliable source of fish. White crappie were difficult to obtain at 1 station 6C. Station 6H was first sampled on May 21, 1975. Both stations represent fish from Holtwood Pond and are unaffected by PBAPS operation. Also fish Station 30C was established as an alternate to Station 30A and 30B. Fish were first collected at that station on January 16, 1975. All of these stations are in Peters Creek. No first quarter shellfish samples were collected. These samples are normally collected by a ship from the Chesapeak Bay Institute, however the Institute did not have a vessel in the area of the oyster beds during this period and were unable to schedule a special trip. In anticipation of receiving a makeup sample in the second quarter, the April 22, 1975 were radiochemically analyzed before the tissue was measured for gross gamma and gamma spectrum. --___ _ _ -

3 As a result, these analyses were not performed during the first half of 1975.. Ship scheduling' difficulties' prevented the collection j . of a second sample during the second quarter. Since a11 ' farms are sampled and analyzed extensively. for I-131 i under another portion of the Peach Bottom-Fulton' program, analysis at l Interei for I-131 in milk was discontinued at Farms E, D, H, K, L, .-j M, and W because duplication at all eleven farms is not necessary l 1 for a backup analysis. Two distant farms A and C and two nearby; Farms G and J were retained. I-131 analysis in milk from Farms A, C, G, and J was performed only during the second, third and fourth quarters. The first quarter analyt.es were eliminated ) because there is.very little grazing during that peried._ Decreasing the number of samples analyzed in this portion -reduces duplication, while maintaining quality control. All other milk analyses _were - performed as previously scheduled. A special milk sampling was made from all' farms on Nay-12, 1975 for I-131 analysis in an attempt to corroborate results' obtained on an earlier sample analyzed under another portion of the program. All other analyses normally' performed on milk samples were also done on these samples. Beginning in 1972, Philadelphia Electric Company modified the ] i numbering system for sampling locations to more clearly define the j areas of collection. In this process, several. large areas previously designated by a single station number were broken up into an A, B, l l C, etc. station. Therefore the locations now listed in Table 11.1 l 1 as, for examples, Station 4N is the same location called Station 4 in previous reports. In this respect those fish sampling locations i __._____-_-_________m_. ___________:..a.mn.

near the Peach Bottom site are now designated IW, IX, IT, etc. These were previously called Station 4.which formerly was used to )' designate the entire conowingo Pond. }. A susunary of the analyses performed on samples collected January 1, 1975 through June 30, 1975 is gian in Table II.3, t i I

l i TABLE II.1 i ENVIRONMENTAL MONITORING STATIONS January through June 1975 Station Station Location, Direction & Environmental No. Station Name Distance from Peach Bottom Site Media Collection 1 Peach Bottom Located in Site Area Vegetation, Small Came Site Area LA Peach Bottom - On Site at Weather Station Ambient Radiation, Weather Station #1

1. 1, 0.1 Miles ESE of Unit #1 Air Particulate, Precipitation IB Peach Bottom -

On Site at Weather Station Ambient hadiation, Weather Station #2

1. 2, 0.6 miles NNW of Unit #1 Air Particulate, Precipitation i

1M Peach Bottom - On Site at Canal Discharge Discharge Water l Canc1 Discharge 0.9 miles SE of Unit #1 IP Peach Bottom - On Site at Unit #1 Intake, Surface Water Unit #1 Intake 1350' ENE of Unit #1 On Site at U it #2 Intake, Surface Water 1Q Peach Bottom Unit #2 n Intake 1500' NNE of Unit #1 1R Peach Bottom Unit #1 Unit #1 Screen Well from Discharge Water Discharge which discharge pipe exits, j ebout 350 ft. ENE of Unit #1 j 1 IT Peach Bottom Dis-On Site in the Station Dis-Discharge Water (a), charge Canal-2200 charge Canal, 0.4 miles S.E. Fish (Channel Catfish Ft. of Unit #1, 2200 ft. from and White Crappie) Unit #1 Intake 1U Peach Bottom Site - Well at Plant Site, 450' SW Well Water Utility Building of Unit #1 IV Peach Bottom Site - Well at Plant Site, 450' SE Well Water Information Center of Unit #1 IW Peach Bottom Unit #1 About 800 ft. ENE of Unit Silt and Fish (b) Discharge Pond A-1

1. 1 Channel Catfish &

White Crappie) IX Peach Bottom Site - About 1100 ft. ENE of Unit Silt and Fish (b) Cooling Tower Pond

1. 1 (Channel Catfish &

B-1 White Crappie) 1AA Peach Bottom - Located about 1400' SE of Soil Discharge Canal Bank Unit #1 on the Discharge Canal Bank 1BB Peach Bottom - On Site in the Station Silt (a) Discharge Canal Discharge Canal, 2250' SE of Unit #1 _ _ _ - _ _ _ _ _ _ - _ - _ _ - _ _ - _ _ - _ _ - _ _ _ - _ _ _ _ _

TABLE II.1 (cont'd) Station Location, Direction & Environmental Station Distence from Peach Bottom Site Media Collection No. ', Station Name 1EE Peach Bottom - In the Discharge Canal anywhere Fish (Channel Catfish Discharge Canal between the Peach Bottom Unit and White Crappie) 2 and 3 Liquid Radvaste Dis-charge and Canal Exit (between 2200 & 4600 Ft. SE of Unit #1) 2 Peach Bottom Site - On bite, 0.7 miles SE of Air' Particulate f 0 130 Sector Hil?. Unit #1 i 3A Delta, Pa. - 3.6 miles SW of Unit #1 Air Particulate Substation 0.5 miles U of Maryland-Vegetacion,' Soil border 4A Conowingo Dam - 8.4 miles SE of Unit #1 Air Particulate Powerhouse Roof on Power House roof in Cecil County, Md. 4B-Conowingo Dam - 8.4 miles SE of Unit #1 Air Particulate Powerhouse Roof on Power House roof in Cecil County, Md. r 4C Conowingo Pond, 1,000 ft. downstream from Silt Pa. the Peach Bottum Station Discharge j 4D Conowingo Pond, 500 ft, downstream from.the Silt. Pa. Peach Bottom Station Discharge 4F Conowingo Dam - In the Conowingo Hydro-Elec-Surface Water E1. 33' MSL Grab tric Station about 8c4 miles SE of Unit #1. Water is-sampled from a header which continuously draws pond water from about elevation 33' MSL. 4H Conowingo Dam - Tailrace on west side of Fish (American Shad) Ta11 race river 8.5 miles SE of Unit'#1 4I Conowingo Pond - Located in Conowingo Pond Fish (Channel Catfish Net Trap #8 about 1450 ft. E of Unit #1 and White. Crappie)' 4J Conowingo Pond Located in Conowingo Pond Fish (Channel Catfish Net Trap #15 about 6400 ft. SE of Unit #1 and White Crappie 1 4 TABLE II.1 (cont'd) Station Station Location, Direction & Environmental No. Station Name Distance from Peach Bottom Site Media Collection i 4L Conowingo Dam - Continuous sampler in the Surface Water E1. 33 (Pt.) Com-Conowingo Hydro-Electric posite Station, about 8.4 miles SE of Unit #1. Water is continuously sampled from a header which draws pond water from about elevation l 33' MSL. 4M Conowingo Dam - West bank downstream of Precipitation Downstream E1. Conowingo Hydro-Electric 40 (Pt.) MSL Station 8.5 miles SE of 4 Unit #1 4N Conowingo Dam - Environmental Monitoring Sta-Vegetation, Soil Environmental Sta-tion on west shore upstream tion of Conowingo Hydro-Electric Station about 8.4 miles SE of Unit #1 4T Conowingo Pond -Near Near middle of Conowingo Pond, Silt Conowingo Dam about 8 mi. SE of Unit #1 5 Wakefield, Pa. 4.5 miles E of Unit #1 Air Particulate, Soil l and Vegetation 6A Holtwood Dam - 5.9 miles NW of Unit #1 Surface Water (through Hydro-Electric Hydro Plant) Station 6B Holtwood Dam - 5.9 miles NW of Unit #1 Air Particulate Hydro-Electric (Hydro Power House Station Roof) 6D Holtwood, Pa. 6.0 miles NW of Unit #1 Vegetation near Holtwood Dam in Lancaster County 6F Holtwood Dam - 5.9 miles NW of Unit #1 Silt (above dam) East Shore Upstream in Lancaster County 6G Holtwood, Pa. 6.0 miles NW of Unit #1 Soil near Holtwood Dam in Lancaster County TABLE II.1 (cont'd) Station Station Location, Direction & Environmental No. Station Name Distance from Peach Bottom Site Media Collection 6H Holewood Pond Located in Holtwood Pond abotte Fish 6.6 miles NW of Unit #1 6I Holtwood Dam - Continuous sempler at Holtwood Surface Water i Hydro-Electric Hydro-Electric Station intake Station - composite about 5.9 miles NW of Unit #1. Water is continuously sampled and collected in a 175 gallon tank. 7 Darlington, 9.4 miles SSE of Unit #1 Well Water j Maryland Area in Hartford County 8

Colora, 9.9 miles ESE of Unit #1 Well Water Maryland in Cecil County l

l 9 To1chester, 38 miles south of Unit #1 Shellfish (Oysters) l Maryland on the east side of the l l Chesapeake Bay l l 10 Hacketts Point, 56 miles S of Unit #1 on Shellfish (Oysters) l Maryland the west side of the Chesapeake Bay 1 1 1 11 Swan Point Bar, 44 miles S of Unit #1 on Shellfish (Oysters) l Maryland east side of the Chesapeake Bay 3 12A Philadelphia, Pa. 63 miles Er:3 of Unit #1 on Air Particulate 900 Sansom St. the roof of 900 Sansom Street i 12D Philadelphia, Pa. 62 miles ENE of Unit #1 on Air Particulate 2301 Market Street the roof of 2301 Market Street i l 13A Chester Water Intake On the east shore of Conowingo Surface Water l Pond Pond at Chester Water Authority Intake, 2.3 miles SE of Unit #1 i i 13B Chester Water Intake At Chester Water Authority Surface Water Pump Discharge Intake 2.8 miles SE of Unit #1 l i l l i i ) - _ ----

1 TABLE II.1 (cont'd) i S?.ation Station Location, Direction & Environmental No. Station Name _D,1 stance from Peach Bottom Site Media Collection 14 Peters Creek 2.3 miles W of Unit #1 Air Particulate 15 Silver Spring Road 3.8 miles N of Unit #1 Air Particulate 17 Riverview Road 4.4 miles dE of Unit #1 Air Particulate 25A Pequea Creek In Pequen Creek, 10.8 miles Fish (White Sucker) NNW of Unit #1 near PP&L recreational area 25B Peques Creek In Pequea Creek, 12.4 miles Fish (White Sucker) N of Unit #1 near Creek and School Roads l 250 Pequea Creek In Pequea Creek, 12.2 miles Fish (White Sucker) N of Unit #1 near Byerland Church Road 25D Peques Creek In Pequea Creek,13.3 miles Fish (White Sucker) N of Unit #1 near Radcliff Rd. 28 Peach Bottom Site Well in Site Area about Well Water 1.2 miles SW of Unit #1 30A Peters Creek In. Peters Creek, 2.7 miles Fish (White Sucker) ENE of Unit #1 30B Peters Creek In Peters Creek about 2.2 miles Fish (White Sucker) ENE of Unit #1 500 Peters Creek In Peters Creek about 2.5 miles Fish ENE of Unit #1 31 Pilottown Road 4.8 miles SE of Unit #1 Air Particulate near Pilottown Road 32 Slate Hill Road 2.8 miles NE of Unit #1 Air Particulate near Slate Hill Road 33A Fulton Weather Fulton Main Weather Station Air Particulate Station 1.8 miles ENE of Unit #1 38 Peach Bottom Road 2.9 miles E of Unit #1 near Air Particulate Peach Bottom Road _

7 1 l TABLE II.1- (cont'd) Station Station Location, Direction &- Environmental- 'No. Station Name . Distance from Peach Bottom Site : Media Collection Peach Bottom Nearby Regional Farms Milk Regional Farms surrounding the Peach Bottom site on the west side of Conowingo Pond are designated G, H, and J. Intermediate distance farms on the. east side of the pond are designated D, K, L, M, 1 I and N. Distant regional farms on the west side of l Conowingo Pond are desig-l nated A, B,.and C. (c) I (a) These stations were exposed to Unit #1 discharge wat'er after 12/6/72.. Prior to thie date only surface water was present.. (b) These stations were exposed to Unit #1 discharge' water until 12/6/72. (c) The precise farms involved in the program have changed in some' cases due to circumstances beyond control of the program. The replacement farms are-in the same general locations' distributed so as to encircle the site close to and further avsy from the Peach Bottom site. m :

c S M F ,BA ,BA 24252 24252 4 4 ) 113 113 3 n( B QA BAB BAB o i r B I46418 146418 1 13 1 t e I 133 133 1 6 ab t m S u A AA ,D ,A AA ,D ,A A PABL N 1 I35273 135273 1 I634 113 113 1 s n n n e e r o e e M e i t t A bf t n n e R moa e e e e G u c o v v r v eo O5 N o w e e h i nw R7 L T S S T F OT P9 1 G~ N e I n R u OJ T - x I h sas s

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1 I l II

I. PROCEDURE

S 1 Detailed sample collection and handling procedures and reporting procedures are given in a previous report (2). Sample preparation l and analytical procedures es well as equipment specification and calculation procedures are given in the 1974 annual report (3). q During this period, the procedures were modified to require measuring the total unprepared and prepared aliquot weights when the composition of the sample is changed during preparation prior to counting. These weights had been obtained during previous periods but were not formally required by the procedures. For samples analyzed af ter August 6,1975 potassium was measured using a Perkin Elmer Model 360 atomic absorption spectrophotometer in the emmission mode replacing a Coleman flame photometer. l I l -

S ch pr nt( U 2222 mmmm t //// i iii1 n CCCC ttttttt U pppp vwwwwww g n rrrr rr rrr rr rrrr yyyyyyy i eeee ee eee eereeee rrrrrrr t tttt tt ttt t tet t tt ddddddd r 3 iiii ii iii iitiiii o m llll ll lll llillll ggggggg p / //// // /// //l//// /////// e i iiii ii iii ii/iiii iiiiiii R C CCCC CC CCC CCgCCCC CCCCCCC p pppp pp ppp ppupppp ppppppp ) a ( .tt tt ww S E t ww ) I b w. yy T t yyrr ( I f rr rr r r r rr ywrrdd V on 3 ee ee e e e e ( r dd I o m rrtt t t rt t rt rt t d y gg ti / eeii ii ai i eieii rgg// T I i t i ttl l ll tl ltltll gd//ii S mc C ii// / / i/ /i/i// / iiCC I. N i e p llii i i li i l glii i gCC pp E Lt //CC CC /C C/u/CC C/pp I I e 8 ii pp pp i p pi ipp pi 68 S I D 0 CC C C3 C C4500 0 pp35 61 p 3 5. )c 8 p 0 0 0 0. )c L p5) 5 p0 A .c E L C 0 2500 00 20( 020200( 010000( I B A T T Y L A N A .t e ...ttt w L zd ttt www A ie www y C S z yyyr I y P el r llll l l lll l llllll yyyrrrd Y l a e mmmm mm mmm mmmmmmm rrrddd T pn t ddd g mA l 0000 00 000 0000000 ggg a i 0000 00 000 0000000 ggg 0 S F 5000 00 000 0000000 5550 111 1 4 144 1111114 2217770 1 0 0 3 s i m m m s u u u y r r r l a t a t a t a a a h ea ec h a c ha c n t t p l t l e pt e pt e A e e l eb eeb p l e p l e p B B Al uBl uS AB m S AB S f 7 bl bl u 7 7 o s s903 suosuoa s si903 a ss 903 a s s891 sl ssl sm ssn891 m ss0891 m e o o-oonoonm ooa - - - m oo4 - - - m p r rrrs rSI rsI a rrrrrsa rr-rrs a y G GSS C G G G GGUSSCG GGKSSCG T e m t u a r i l e d u n t e c o a r t W e l M i i t t i ta e a S e r t l a i c w p P p a i f l l m c r l i a r e u e o S i r A P S W S

t i n U g n hhhhhh hhhhhhhh hhhhhh i ssssss ssss ssss ssssss t aaaaaa aaaaaaaa aaaaaa r o ggggggg gggggggg g gggggg p /////// //////// / ////// e iiiiiii i1iiiiii i iiiiii R CCCCCCC CCCCCCCC C CcCCCC PppppPp ppppppPp p pppPpP ) b h hsh hh ( ) d f hhh sas hh hss e on h sss h a a ss h saa u o h shaaa sh g h aa hsha n ti sas a s g/ g s sas gg i it a aggg a/i/agg a ag// t mc g /// g iCi // g /ii g/giCC n ie g/giii) / g C p C gii ) o Lt /i/CCCc i/p p/CC c /i/Cpp ( iCip c e i C i p p p( Ci 3 i pp ( D CpC pC 01C CpC 58 p P311 p4 00 p35 p p500 0 0 0 I. 311000 11000200 311000 I I t I w t E l w L a B n l A e h i a T zd s g n i e hha i h i hh S s ss r sh g ssh y aag o ashhh i aashhh el mhhh assshhh r asss l a gg sss. g aaasss o gg aaa pn mm0 aaag mg-aaa mmg mA 2 mggg g mggg a 00 - ggg0 0 ggg 00 S 000 0 00000 0 000000 2215555 22111111 0 222111 1 1 0 0 0 e 5 2 eeu l, e uus s l e u sss i m eu s ssim s u hs s iiTu y r S s i lTT r l a t i Tlll tt a a ha c at y ll ettf ce ha n pt e t l t eehff oeu pt A l e p et efhhS ooS ps l e AB S Bf t oSS SS S s AB f 7 oaS 7 7 i 7 o ss 903 a ssr 903903 aT ss 903 ss0891 m s a0891891 m ss0891 e oo4 - - - m o d p4 - - - - - mf oo4 - - - p rr-rrsa rne - rrsrrsao rr-rrs y GGKSSCG GasKSSCSSCG CGKSSC T mu i d e n M h o s i e i t l f a p l t m h l e a s e g S i h e F S v

i! !.l! ~ lJ f o s ) c i f d d i y s o ( t t y e e t d a n l t ) s a i m i e n t ) e a n e l 0 0 e s 0 0 0 50o0 e t l t t A c u 1 1 ( l 1 1 1 11l1 m sy c s r r s a 8 8 8 a 2 i r u t sa n y e e e e ev S c h p r t u c n t ( n ll i U u al f o vi i c w c e e l h. p a Tc s c t e .e i h p t y y, t t tt i in h n g ve t U d n it i g i i tn w n h h o h h r r rrrr m io i s s r s s e e eeee u~ sc t a a y a a t t tttt s n ) r h i i iiii s e', n o g g t g g l l llll a ss o t p / / / / / / / //// d i n e i i i i i i i iiii e ti t a R C C C C C C C CCCC t nl p n p p P P P p p pppp a eo r i r ms o m u s o g r, b d n ts a i sd t t nl l o n ie a n u i n r o dy r s o a c n e i r al t r ) n r e ,a t b c i o r o ( d f d h h rre n si r g ) e o n h i s s h eet dm d r n 92 u o s h o a a s h rtti e oe n e i n t i a s r a s eiil h hh a t i i t a y g g a' tll/ t tC g n t m c g h / / gl i//i e y n u r i o n i e / g t i i //gl liiC n m. t t c o Lt i / / C C ii// /CCp i c e C i i p p CCii 1 pp ld e n D p C C ppCC C 8 s ae m u e ( p P 6 1 pp p320 n cs o o h d 05 o iu e c t n 0 I. 1 I 2 0 0 1718 5000 i t g u t ys e o o I a l e h t f I t i ar e. I v nu d y e ad

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EL d d e ( t r r l B e i ,c n e a a A z d o d eoe ee h p m T i e h r h r mrg ps w m r S z s h y s h a upn ye o o y a s h h h a s d l a t r s c n e l a T s s a llll n oeh p l l a g a a g mmmm a vhc d e r s p n m g l m g t t ns v o n m A m a g g m 0000 s e o ae e r o a 0 t 0 0000 l rt d l r i S 0 0 o 0 0 0 0 0000 o pe ei e t 2 2 T 1 1 2 2 1141 w mdy sl t a t ant i c a c r sui mu i t o v n t t n t f ei e n a e ol t lf e m c g bi po m e n e t n nas m e t o s ldy f i onn ae r s c i cnl oe d iie sr u y s sae sn n t as u s s w o d o ct ht a o y u,t p nbe tx e r l M a ,b i l a er e o s uoh ii m e n aua ld r e e a e f t wm h e A t sp cn y n n t r e r t h ese sa h o o e r ase se o o t f bis u t b b B o os eh o T me 7 c ehu it r t o s u 1 9 0 s 9013 rta r o n t e ste 0s 3 8 9 s 0 8931 t a c ah r a p of n 4 s 1 o 4 1 - l f vt r c e y roo i r r r rr s u nod i e i u T GSB Kt I S S c K SSIC s o n nw f d e il a o l i r t a id l n r ccs t n a g e e eie ca r i t h t pl e e s i t. eyp t, v l c dt m en o o / st a do n g m ae f es i d u or ft e s u d, an os t i 3 i es s e e a _ 0 d nd t ee tu m e e il i vw iq i r 1 M f e mot m t e ei ibe in s h e l t Dy Lab Li E T C p i m b k a b l ) ) ) ) ) ) S a i a b c d e f ( ( ( ( ( ( R M f (llil

J IV. DISCUSSION OF RESULTS The results obtained from the program are presented in the data tables and figures following this section and are discussed below according to i sample type. All results are given with an error corresponding to two I standard deviations in the net count rate except for K-40 which is generally 107. when significantly above the detection limit. Results which are not greater than the calculated error are reported as less than (4.) the value corresponding to the error. In calculating averages results reported as "less than" a value are included as that value; The average of a series of numbers which contains at least one number not a "less than" number is given as a real number. If all of the numbers is a series to be averaged are "less than" numbers, i the average value is given as a "less than" value. The deviation listed ) with means is equal to two standard deviations of the data comprising the i mean. Data from new locations added to the program during 1975 have been included in averages, figures and tables as they became available. In the discussion of data, general trends in the data are stressed as are comparisons of results from stations which would most likely be affected by Peach Bottom Atomic Power Station (PBAPS) operation, with data from those which are more remote from the site. Because of the presence of generally lower levels of radioactivity in the enviromnent compared to earlier periods of major atmospheric nuclear testing, precise trends tend to become obscured in the normal variability of data. {

A. AIR PARTICULATE 4 The values of the concentrations of gross beta radioactivity observed in air particulate samples are listed in Tables IV.1.1 through IV.1.4 and and are presented graphically in Figures IV.1.1 through IV.1.5. Comparative available EPA data are given in Table IV.1.5. Gauma spectral analyses i are given in Tables IV.1.6 and IV.1.7. j I For comparative purposes, stations have been divided into three groups. Group I, which is on the Peach Bottom site and closest to the ] plant release points, consists of Stations LA,1B, and 2. Group II rings 1 the site at further distances and consists of stations 3A, 4A, 4B, 5, 6B, 14, 15, 17, 31, 32, 33A and 38. Group III, which is in Philadelphia, Pennsylvania serves as a reference group and consists of Stations 12A i and 12D. Fbasurable concentration of gross beta radioactivity was measured in n11 but one of the air-particulate samples. The measurable values ranged from a minimum of 0.022 pCi/m3 at Station 31 near the end of June to a maximum value of 0.38 pCi/m3 in the sample collected at Station 2 on the week ending April 13. The minimum concentration observed in 1975 is slightly higher than the minimum concentration observed during the first 6 months of 1974, but was not significant. The maximum concen-3 tration seen thus f ar in 1975 is lower than the maximum value of 0.54 pci/m seen in "wy 1974. Although a test by the Peoples' Republic of China in June, 1974 did result in the presence of I-131 in milk (3), this test did not seem to significantly increase the inventory of the stratospheric l l radioactivity over the eastern United States. _ _ _ _ - - - _ - _ - _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ - _ _ _ _ _ _

1 i As can be seen from Figures IV.1.1 and IV.1.2, there was no significant difference between the values obtained for the three groups of stations l indicating no effects due to PBAPS operation. Similar to previous years, 1 \\ with the exception of 1973, the levels found showed a rise in spring. The decline which generally started in June in other years started somewhat ] 1 earlier in 1975. In 1973 the levels were essentially constant. ) l For comparison, data from the Environmental Health and Protection Agency (EPA) (4) are presented in Table IV.1.5 and shown on the long term plots in Figures IV.1.3, IV.1.4, and IV.1.5. The trends observed in the Peach Bottom-Fulton program are similar to those seen at the EPA station in Harrisburg, Pennsylvania. The small difference in results is apparently due to differences in laboratory techniques and is not attribu-table to PBAPS operation because it exists for all three groups. The EPA j values listed in Table IV.1.5 are based on laboratory measurements in contrast to only the less sensitive field estimates available for some i periods before 1974. The EPA Trenton, New Jersey sampling station was i put on standby after July 1973 and is therefore no longer available for comparison. Figures IV.1.3 through IV.1.5 show comparable trends and values j over the period 1966-1975 for all three groups of stations even though the composition of the groups has been changed, by adding more sampling { l

stations, This would indicate that the distribution of activity over the entire area is relatively uniform and is not affected by PBAPS.

Results of gamma spectrum analysis of all weekly samples taken l l l ) l

together as a monthly air particulate composite sample from each station 95 r-Nb and 106 u-Rh have been are given in Tables IV.1.6 and IV.1.7. Only Z R found as has been the case in previous' samples in this program and other comparable programs, Concentrations were a few hundrethe and a few tenths of a pCi/m3 respectively and were similar between groups of stations. All of these nuclides are attributed to previous nuclear device testing since they are seen with wide geographical distribution. No contribution from the operation of PBAPS is indicated. l B. PRECIPITATION j 1 The concentrations and surface densities of gross beta, Sr-89, Sr-90, ) and Cs-137 radioactivity in precipitation samples collected at Stations 1A, IB, and 4M are presented in Tables IV.2.1, IV.2.2, and IV.2.3 and plotted in Figures IV.2.1 through IV.2.6. Results from the EPA station 1 in Harrisburg are given in Table IV.2.4. Most of the radioactivity in precipitation samples is in the form of particulate which are washed out of the air by rainfall and collected in sample containers. Since most of the particulate material is washed out in the initial part of a rainfall, the surface density, i.e., pCi/m2, is used in addition to concentration (pCi/1), because it tends to minimize the effect of sample volume. Lack of complete correlation with air particulate values comes about because rainfall generally does not occur at frequent I intervals. The dependence of the activity levels on the precise conditions l I occurring at the start of each rainfall can cause wide variability between samples even taken over limited geographical areas. i The values for gross beta radioactivity monthly concentrations observed in samples collected during 1975 at stations 1A and 1B vary from 5 pCi/1 in May at Stat.on lA to 64 pCi/1 in the January samples _ _ _ _ _._.

from both stations. The maximum concentration observed in 1975 compares favorably to the maximum values of 72 and 73 pC1/1 observed in 1974 and is in the range of preoperational data. The surface densitites 2 range from 300 pCi/m at Station 1A in April to 4700 pCi/m at Station 1A in January. This compares to 1974 six-month values ranging from 2 5200 pC1/m at Station IB to 140 pCi/m at Station 4M. These are well within the range of preoperational data. The values of the monthly gross beta concentrations observed in the precipitation samples collected at Station 4M during 1975 ranges from 2 in May to 44 pci/1 in January. The maximum value observed in saeples collected in 1975, 44 pC1/1, is somewnat higher than the maximum value of 25 pCi/1 observed in August 1974, but is in the range of preoperational data. The surface density values range from 300 in May to 3100 pci/m in January, j Sr-89 radioactivity was found in very low concentration of 4+3 pCi/1 at Station 4M during April, While this number is statistically significant, the result is based on a very low count rate. The amount of activity was too low to permit decay measurement and to thereby confirm the presence of Sr-89. No measurable Sr-89 was found at Stations 1A or 1B. Sr-90 radioactivity concentrations ranging from a few tenths of a pCi/1 to 5,8 pCi/1 were found at Stations IA, 1B, and 4M in all but two of the samples. The high value was found at Sation 1A in April and is j similar to results obtained in earlier periods at the same loc ation. The absence of Sr-89 in the sample would indicate that the Sr-90 is not of recent origin and is not from PBAPS operation. Corresponding measurable 2 surf ace densities range f rom a low of 40 pC1/m at Station 4M in January 2 l to a high cf 330 pC1/m at Station 1A in April. The majority of values 2 were between 40 and 180 pC1/m. 1 '

1 - Cs-137 radioactivity concentrations and surface densities at Stations 1A,1B, and 4M averaged 1.1 and 75,1.0 and 75, and 0.6 pCi/1 and 70 pCi/m2 I' respectively as given in Table IV.2.3. These are similar to the values i seen in 1974. j It is uncertain that the higher concentrations measured in samples from onsite stations 1A & IB as compared to those at Conowingo Station - i ( 4M for gross beta, Sr-90 and Cs-137 are the result of plant operation I since normal variability has shown differences of the same magnitude in previous years, f The long term plots which are continued in this report show generally [ i scattered data which is consnon with this type of sample. The observed radioactivity concentrations at Stations 1A, 1B, and 4M l l show the extreme variability typical of precipitation and collectively do not indicate any contribution from the operation of PBAPS. EPA data from Harrisburg, PA presented in Table IV.2.4 shows concentrations and surface densities of gross beta radioactivity. The values are generally lower than the values seen in this program. Prior to July 1973, the published EPA values were the result of field measurements. Since then laboratory measurements have been reported. This changeover had the effect of decreasing the reported monthly mean values due to an increased analytical sensitivity. The reason for the l 1 1 difference between data from this program and the EPA's is probably due to a difference in analytical procedure and is being investigated. C. SURFACE WATER AND DISCHARGE WATER The concentrations of gross alpha and gross beta radioactivity in tue soluble and insoluble fractions of surface water and discharge water grab samples are given in Tables IV.3.1 and IV.3.2. Similar values for the composite samples from Stations 4L and 6I are given in Table IV.3.3. Mean radioactivity concentrations are given in Tables IV.3.4 through IV.3,6. Comparative monthly and annual values are presented in Figures IV.3.1 ' 35~-

through IV.3.16. Figures IV.3.1, IV.3.2, IV.3.9 and IV.3.10 present a comparison of Station IQ, which is unit 2 intake and Station IM, which is at the canal discharge. Any radioactivity introduced by unit 2 would be reflected as a difference in radioactivity measured at the two stations. The concentrations of gross alpha radioactivity in the soluble fraction are shown in Figure IV.3.1, No measurable alpha radioactivity I was found in any of the samples. The gross alpha concentrations in the- ) insoluble fractions as plotted in Figure IV.3.2 are similar between both ] locations. Most values are below 0.5 pC1/1 and all of the valres,are ? below 0.9 pCi/1. Gross beta radioactivity concentrations as shown in Figures IV.3.9 and IV.3.10 for the two stations are essentially the same. The observed range is 2 to 5 pCi/1 for the soluble faction and 0.5 to 2.0 pCi/1 for the insoluble fraction. Figures IV.3.3, IV.3.4, IV.3.13 and IV.3.14 compare data from analysis of composite water samples from Station 6I, which is unaffected by PLAPS operation, tand Station 4L which is potentially affected. No gross alpha radioactivity was found in any of the solubla fractions. Gross alpha radioactivity concentrr". ions in the insoluble fractions ranged fran 0.1 to 0.6 pCi/1 and were similar between both locations. Gross beta radioactivity concentrations in the soluble fractions in the composite samples from Station 6I and 4L ranged from 2 to 4 poi /1 and in the insolubic fractions were between 0.4 and 1.2 pCill. Again j l there was no signif'. cant difference between locations, j Figures IV.3.7 and IV.3.8 compare the gross beta radioactivity concen-l trations for the soluble and insoluble fractions respectively of the water samples from Unit 1 Intake (Station 1P) and Unit 1 Discharge (Station 1R). _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ i

i The valuas are the same between stations within the limits of the error. G re.< 1 beta radioactivity concentrations in samples from Stations 6A and 4F (grab samples) are shown in Figures IV.3.11 and IV.3.12. l 1 Concentrations in the soluble fraction range from 2 to 4 pC1/1, with i no significant difference between locations. The insoluble fractions range from 0.5 to 9.7 pCi/1, again with variations similar to those found in preoperational data. The higher value of 9.7 pC1/1 for the insoluble fraction of the January sample f rom Station 4F is not reflected j l in the composite sample for the same period from Station 4L. This is l l probably the result of the presence of a somewhat more radioactive particle in the grab sample, which was not representative of the average radio-l activity level, during the period of the composite sample. l Mean values as given in Tables IV.3.4 and IV.3.5 indicate that l l gross alpha and gross beta concentrations in the saluble fractions of all I of the samples and in the insoluble fraction of all except possibly the l composite sampics were similar within the limits of normal variability at l l all stations. From the 1974 data from Station 4L and the available 1975 i data from Stations 4L and 61, there may be an indication of loss of l insolubles in the composite samplers. This is also suggested by the l generally lighter weights of the insoluble fractions in the composite samples as compared to the grab samples. Figures IV.3.15 and IV.3.16 compare annual mean gross beta radioactivity concentrations in the soluble and insoluble fractions f of surface water samples from Stations 6A, 4F, and 13A. There is no indication of any measurable radioactivity in surface and discharge water due to the operation of PBAPS during the period of this report. D. WELL WATER l Results of the analysis of well water samples for gross alpha, gross 1 beta, Sr-89, Sr-90 and Cs-137 radioactivity and uranium are given in Tables IV.4.1 through IV.4.2. Gross beta radioactivity of grouped wells are plotted in Figure IV.4.1. \\

}' Radioactivity in wall water sampico gensrolly arisas from the l l 1eaching of naturally occurring nuclides from the rocks and soil past which the water flows. As levels of the water table change, variations l can be encountered in the flow pattern followed by water which appears l in a given well. This can cause changes in the radioactivity content of the water since the teachability of the ;adicactivity varies as the permeability of the soil and rock encountered by the water differs. An additional factor which can change radioactivity concentration is the well usage. A well which is used at a constant rate tends to maintain a more constant radioactivia level. Lack of usage can cause buildup of radio- ) l activity concentration if conditions very close to the well are amenable to leaching, or it can cause concentrations to decrease if water from the major sources of the radioactivity does not reach the well when samples are taken. Gross alpha radioactivity concentrations were found to be generally below the detectioc limits of several tenths of a pCi/1. The May sample from Station 28 yielded a slightly positive value of 0.7 pC1/1. This range of concentrations is consistent with data from earlier time periods. Gross beta values randed from 2 to 4 poi /1 with all but two values 2 pCi/1. The January samples from Stations IV and 7 had values of 4 and 3 pCi/1 respectively. These values were within the normal variability seen in previous years. Uranium was also measured in the January samples from Station 28 and 7 at levels of.04 and.05 ug/1. Other samples ranged from 40.3 to <0.0S ug/1, These levels are similar to those seen in previout periods. Uranium is naturally occurring in most rocks. No Sr-90 or Sr-89 radioactivity was detected in any of the samples. The January samples from Stations 1U and IV showed Cs-137 radioactivity E___________

l, l of 0.7 and 1.1 pCi/1 respectively. Measureble Cs-137 valuas have besn seen l \\ periodically in previous samples during Units 2 and 3 preoperational periods at higher concentrations. Therc5 ore the January values do not represent increased Cs-137 concentration in these wells. When compared to preoperational variations, mean values as given in Table IV.4.2 show no significant differences between wells close to or on site and those at distant locations indicating no radioactivity input from the operation of PBAPS. E. SO4 j i The results obtained for concentrations of acid-leachable gross alpha, gross beta, K-40, net beta, Sr-90, Sr-89, and Cs-137 radioactivity in j i soil samples are given in Tables IV.5.1 and IV.5.2. Mean values for gross alpha, net beta, Sr-90, Sr-89 and Cs-137 are plotted in Figures IV.5.1 through IV.5.5. Alpha and beta radioactivity are found in soil samples because of the presence of naturally occurring nuclides in the uranium and thorium series and K-40, and fron nuclides present in fallout from weapons testing. Specific analysis for Sr-89, Sr-90, and Cs-137 which are normally present i i in fallout are done to measure these nuclides in the presence of the larger quantities of naturally-occurring radioactivity. The gross alpha radioactivity concentration has a range from <0.8 l to 8 pCi/g dry weight, with the majority of the values between 1 and ( 5 pCi/g dry weight. As has been the case in the past, the values from Station 4N average lower than the average values for other stations. This is most often the result of different soil composition at the various j f locations. Net beta radioactivity, which was detectable in all samples, was in the range of 2 to 5 pCi/g dry weight with the majority of the samples j l l between 2 and 4 pC1/g dry weight. These values are within the range of l t normal variability. l - - - - - l

l l Strontium-90 concentrations were grouped in a f airly narrow range between 0.21 and 0.50 pCi/g. The highest value was again in the sample from Holewood. All of these values are consistent with previous annual averages, q As shown in Figure IV.5.0, the value for Station 1AA tended to be lower 1 than the mean for the other stations as a group. Sr-89 was not detected at any station. The concentration of Cs-137 ranged from 0.048 to 1.02 pC1/g and was measurable in all samples. The values seen in all January samples were about the same indicating wide spread deposition, not resulting from FBAPS operation. The value for Station 1AA was again lower than that for the grouped distant st:ations as shown in Figure IV.5.5, and all values were within the range of preoperational data. Bottom site are comparable to or lower than the average values from the surrounding sampling stations indicating no measurable radioactivity in soil from PBAPS operation. F. SILT Table IV.6.1 gives the analytical results for concentrations of acid-leachable gross alpha, gross beta, gross gamma, Sr-89, I Sr-90, and Cs-137 radioactivity for silt samples. Gamma spectrum analysis results are given in Table IV.6.2. Gross beta and specific nuclide activities observed at several sations are presented in Figures IV.6.1 through IV.6.6. Silt samples are expected to contain naturally-occurring radio-activity, as discussed above for soil samples, in addition to any other activity introduced into the aquatic environment which would settle onto or be absorbed by the silt. As can be seen by comparison of the data in Tables IV.5.1 and IV.6.1, the activity levels in silt generally are.--

l l I similar to those found in soil. Soil may tend to have somewhat higher i levels due to the presence of fallout from nuclear testing. The concentrations of gross alpha radioactivity at all campling stations ranging from 1.8 to 7 pCi/g are well within the range of variability observed in the PBAPS Unit 2 and 3 preoperational survey. i Gross beta radioactivity concentration ranges from 1 pCi/g at Stations 6F to 6 pCi/g at Station IX. These results and variations between stations are consistent with PBAPS Units 2 and 3 preoperational l period. t l Sr-90 concentration ranged from 0.020 pCi/g in a sample from Station 6F to a high of 0.083 pCi/g in a sample from Station 4D. A concentration of 0.05 pCi/g was observed at Station 4T near Conowingo Dam. All results are within the range of variability observed during the PBAPS Units 2 1 and 3 preoperational period. Sr-89 was barely measurable at Stations i i 1BB and 6F. All samples analyzed showed Cs-137 generally at low levels of a few hundredths to a few tenths of a pCi/g. The apparent discrepancy between the radiochemistry values and gamma spectrum values occurs because the values given in Table 6.2 assume that no interfering nuclides are present which is generally not the case with silt. Figures IV.6.1 through IV.6.3 compare Stations 4D, 40, and 4T which are at increasing distances from the PBAPS discharge. There does not appear to be any correlation of the observed levels with particular locations when normal variability is taken into account. The available preoperational data from 1971 and 1972 show approximately the same spread in values and values of similar magnitude to those _ _ _ - _ _ _ _ - _

i i sean during the first half of 1975. .1 A comparison of Stations 1BB, in the discharge canal down-flow the liquid rad-waste discharge, and Station 6F, above Holtwood Dam, in Figures IV.6.4 through IV.6.6 indicates no addition of radioactivity j. by PBAPS operation. l Gross beta values measured during this period are the approximate range of 1-10 pCi/g observed during the preoperational period. Sr-90 and Cs-137 concentrations were also similar to the preoperational data indicating no addition to the radioactivity concentration of silt due to the operation of PBAPS. Gamma specteam analysis showed the presence of K-40 and the U, Th series, all of which are naturally occurring and Zr-95 which is commonly present from fallout. The MDL values in Table IV.6.2 are based on the presence of a single gamma ray energy. When other gamma rays are present, as is always the case in silt samples, the actual MDL value may be significantly above that given in Table - rV.:6.2. This can cause an apparent discrepancy between gamma spectrum and radiochemistry results. l l l l I l l l

G. FISH The results of the analysis of fish samples for concentrations of gross alpha, gross beta, K-40, net beta, Sr-90, Sr-90, Cs-137 and gross gamma radioactivity are given in Table IV.7.1, Mean values are presented in Tables IV.7.3 and IV.7.4. Net beta and Sr-90 data are plotted in Figures IV.7.2 through IV.7.4. As can be seen from Figure IV.7.1, the quarterly mean net beta radiogetivity in fish collected at Stations 30A and 300 from Peters Creek which runs into Conowingo Pond is not significantly different from that fish collected from Peters Creek 'during previous periods. No comparable values are available for Stations 25A, 25B, 250, or 25D during this period due to the scarcity of fish resulting from very high creek flow in the Spring. Individual net beta values range between approximately (10 and 40 pCi/g ash with quarterly averages 25 pCi/g ash or lower. Quarterly mean concentration of Sr-90 radioactivity as shown in Figure IV.7.2 indicates similar values at Stations 30A and 300 as compared to the last two quarters of 1974. Stations LEE and 4J, as a group of stations which could be affected by PBAPS operation, and Station 6H, which is above Holtwood Dam and therefore unaffected, are compared in Figures IV.7.4 and IV.725. No fish were available at Station 6H during the first quarter due to high river flow. There is essentially no difference in the range of concentrations for net beta and Sr-90 radioactivity in fish at the two locations. As indicated in Section 11.B, Station IEE has been replaced by Station 1Y and Station - 60 by Station 6H. This does not effect the comparability of data. Gross alpha radioactivity was undetectable in samples at all stations at levels <1 to 44 poi /g ash. - _ _ _ _ _ _ _ _ _

Sr-89 was not found in any samples. The concentration of Cs-137 radioactivity measured in samples from all stations was between 0.1 and 0.95 pCi/g ash with the majority of values in the region between <0.2 pCi/g ash and a few tenths of a pC1/g ash. This is consistent with values observed during the PBAPS Units 2 and 3 preoperational period. Figures IV.7.3 and IV.7.6 indicate no difference between potentially effected stations and unaffected stations. Gross gama radioactivity concentrations were generally between 0.02 cpm /g and 0.22 cpm /s, similar to those measured previously. Gama spectrum analyses as shown in Table IV.7.2 indicate the presence of only naturally occurring K-40 and Ru-106 occuring from fallout in a few samples and no contribution dw to PBAPS operation. Examination of the mean values given in Tables IV.7.3 and IV.7.4 indicates no apparent difference in radioactivity concentration between species. A comparison of all data from all stations indicates no difference other than normal variability between stations and no measurable radio-activity due to the operation of PBAPS. H. SHELLFISH The results of the measurement of concentrations of gross beta, K-40, net beta, Sr-90, and Os-137 radioactivity in oyster shells and sof t tissue and gross gama in shells are given in Table IV.8.1 for Stations 9, 10, and 11. Annual mean net beta radioactivity concentration in shellfish tissue samples are given in Figure IV,8.1. Since the oyster shells contain primarily calcium, there is little if any K-40 or other naturally-occurring nuclides present. As a result K-40 analyses and net beta determination were discontinued on shells in 1974. Cs-137 radioactivity concentration in shells in the April sample 7 from Station 11 was barely detectable at 0.08 pCi/g ash. All other samples had Cs-137 levels below the limit of detection of 0.01 pCi/g ash. Sr-90 radioactivity was measured in all shellfish shell samples at levels of a few tenths of a pCi/g ash. Since only approximately 12*/. of the weight is lost in ashing the sample, this is essentially the concentration in the original shell. Because Sr-90 would tend to concentrate in the shell due to its chemical similarity to calcium and the ready availability of large quantities of shell, this analysis should detect any significant changes in radioactivity level which would be below the level detectabic in tissue. No Sr-89 radioactivity was detected in any sample. Special chemical analyses, not required by the program scheduta, were performed to measure concentrations of various elements in shelism For each of the three stations, representative pieces of shells from the April samples were combined for analysis. The following results were obtained: Mean Concentration Etage Elements ppm ppm Sr 960 920-980 s K 70 38-100 Cs 43 <.3-43 Na 750 700-820 Ca 4.2E5 4.2E5-4.2E5 Ba 140 120-150 The net beta radioactivity concentrations in oyster soft tissue as presented in Table IV.8.1 were a11 410 pCi/g ash. These results are similar to values seen previously during the PBAPS Units.2 c.nd 3 pre-operational period. The concentrations of Sr-89, Sr-90 and Cs-137 radioactivities for soft tissue are also given in Table IV.8.1. No Sr-90 was found above the detection limit. The high limits for the April sample from Station 9 - - _ _ _._.-__ _ _ _ _ _ _ _._............

1 .rasulted from tha small sample size available. Sr-89 was found barely above the detection limit at t? e sample from Station 11. Cs-137 concen-tration was 0.6 pCi/g ash in the sample from Station 11, consistent with Unit 2 and 3 preoperational data. No gamma spectrum analysis was performed as discussed in Section II.3. The overall abailarity between locations even though they are at different distances from the Peach Bottom site and the relative constancy of radioactivity levels would indicate that the concentrations seen are due to general environmental conditions and are not the result of operation PBAPS. I. VEGETATION i i The concentrations of gross alpha, gross beta, net beta, K-40, Sr-89, Sr-90, and Cs-137 radioactivity are given in Table IV.9.1 for vegetation samples.

• ban values are in Table IV.9.2.

Figures IV.9.1 through IV.9.3 show annual macn values. 1 The detectable concentrations of gross alpha radioactivity were generally between 6 and 15 pCi/g ash. One sample from Station 6D showed a value of 23 pCi/g asa. The concentrations of net beca radioactivity are similar for all stations and appear to have approximately the same spread. Values ranged from 30 to 70 pCi/g ash. All results are in the range measured during the PBAPS Units 2 and ! preoperational period. Sr-90 radioactivity concentrations range from 0.88 to 9.1 pCi/g ash. The lowest value was obtained on a cantaloupe vine sample from Station 6D and the highest on wild vegetation from the more remote Station 1 3A. Most individual values were a few pCi/g, and all were within the range of Units 2 and 3 preoperational data. i No Sr-89 measurable in any of the samples analyzed. _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ -

a i Cs-137 radioactivity was measured at concentrations averaging 1.2 pC1/g l ash for all stations. Individual values ranged from a low of 0.51 pCi/e, j ash to 4 pCi/g ash and are well within the range of PBAPS Units 2 and 3 preoperational data. There is nc, indication of a contribution to the radioactivity in ( vegetation from the operation of PBAPS as can readily be seen in Table IV.9.2 comparing potentially affected stations with unaffected s':ations. Figures l IV.9.1 through IV.9.3 compare annual mean radioactivity concentrations from potentially affected stations with unaffected stations, Wide variability is to be expected between sample types because of difference in growing season and conditions. J. MILK The concentrations of gross beta, K-40, net beta, Sr-89, Sr-90, Cs-137, and I-131 radioactivity are given in Table IV.10.1 Mean values are presented in Table IT.*.10.2. Quarterly mean concentrations of Sr-90, Cs-137 and I-131 are plotted in Figures IV.10.1 through IV.10.3. For purposes of data comparison, farms have been divided into three groups, one containing Farms G, H, and J, which are regional farms near the Peach Bottom cite, a second consisting of Farms A, B, and C, which encircle the Peach Bottom site at remote discances, and a third consisting of Farms D, K, L, M, and N which are at intermediate distances frem the Peach Bottom site. Farm D has been grouped with the intermediate f arms in this report as described in Section II.B. Farms L, M, and N also represent the farms in the vicinity of the Fulton Site. In Figures IV.10.1 through IV.10.3 Farm D was included in the distant group for 1974. The concentration of net beta radioactivity is generally in the range of 100 to 300 pCi/1 as has been the case during the preoperational period. _ _ _ _ _ _ _ _

i l The major beta activity in milk is due to the presence of naturally-occurring K-40 at concentrations of approximately 1100 pCi/1. The residual net beta values are most probably the result of the difference between two I types.of measurements and are not real.. The gross beta radioactivity 1 is measured'directly on milk ash while the K-4J value is calculated from J chemical measurement of potassium. ~From the known metabolic process of cows, it is unlikely that any nuclides other than those of Strontium, Cesium, Barium-Lanthanum, Tritium, or. Iodine would be present in milk. 1 The presence of only low levels of Sr-90 and Os-137 makes it unlikely I that the net beta radioactivity concentrations are real. The Sr-90 radioactivity concentration for all farms was in the range of 1.2 to 14 pCi/1. This range is somewhat lower than the range for 1974. Tho highest value of 14 pC1/1 was found at Farm J in May. Farm M in the intermediate farm group had a value of 11.8 for the April sample. None of the samples had meaourable concentration of Sr-89 indicating that Sr-90 was not of recent origin and not related to PBAPS operation. The quarterly mean values for each farm group as shown in Figure IV.10.1 Iss. between j 8.6 and 3.8 and do not show any consistent. difference between groups.- The overall numbers are similar to those,btained during the PBAPS Units 2 and 3 preoperatios.a1 period. Values for Cs-137 radioactivity concentration range from 5 to 14.7 pC1/1. No significant difference was observed among the three farm groups as can be seen from Figure IV.10.2. The results are similar to those measured during Units 2 and 3 reoperation periods. I I-131 radioactivity concentration results presented in Table IV.10.1 are corrected for decay to the date of sampling. None of the samples indicate the presence of I-131. As discussed in Section II.B, the frequency of I-131 analysis was decreased during this period. J Results from milk analyses do not indicate any concentrations of radioactivity attributable to operation of PBAPS. 1 .48-

t i K. RABBrrS Tables IV.11.1 and IV.11.2 present the analytical data and mean values obtained from the analysis for gross beta, K-40, and net beta radioactivity in rabbit bone, soft tissue, and muscle, and Sr-89 and Sr-90 in bone. Iodira-131 concentrations in rabbit thyroids are also given. Quarterly mean concentrations of net beta and Sr-90 radioactivity concentration i are shown in Figures IV.11.1 and IV.11.2. Net beta radioactivity concentration in muscle ranged f' rom 40 to 80 pCi/g ash and in soft tissue from 20 to 50 pCi/g ash indicating again that the majority of the activity is due to K-40. For bone, values range j from 10 to 20 pCi/g. These values are consistent with the values seen during PBAPS Units 2 and 3 preoperational period. Sr-90 radioactivity values in bone ranged from 2.1 to 6.2 pCi/g ash. The only available previous data from two quarters in 1974 had a greater spread, but would have an annual average similar to the values found in this period, No Sr-89 radioactivity was found _ in any sample. I-131 was not found in any of the thyroids measured. There is no indication of radioactivity in rabbits which can be attributed to operation of PBAPS. L. EXTERNAL GAMMA RADIATION The dose rate readings and ranges from the Nuclear Measurement Corporation gamma radiation monitors at Station LA and IB are given in Table IV.12.1. The ranges for a period are obtained by scanning the. entire chart for that period at a later time. Station 1A showed readings and ranges between 0.029 mR/hr and 0.036 mR/hr with the majority of the values between 0.030 and 0.034 mR/hr. One 'l high value 0.054 mR/hr is attributed to ele previously observed response 1.

to high building temperature. Measurad building temperature excaadad j 110 F during this period due to f aulty heating equipment. All of the readings and ranges from Station 1B were between j 0.024 mR/hr and 0.029 mR/hr. The difference in the readings and ranges between Stations 1A and 1B are due to difference in individua1' instruments at these locations. The dose rate reading and ranges agree with preoperational data l and show no addition to the ambient gamma levels at these locations due to operation of PBAPS. V. _S_UMMARY ) g No increases in environmental radioactivity were observed which could be attributed to PBAPS operation. Values for gross beta radio-l activity in air particulate samples are consistent with the general trend of an increase in activity in spring followed by a decrease fo these sample types as has been observed for several years. Precipitation samples showed similar trends in radioactivity concentrations among stations. Surf ace water was relatively constant ?ver the period. The activity seen in these media is due to natural radioactivity or deposition of material from earlier nuclear tests. Samples such as soil, fish etc. showed gross and/or net activities which are consistent with the known presence of naturally occurring nuclides or which are most probably attributable to fallout from weapons testing. l l 1 l _ _ _ _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - = _

1 Referances l 1. . a-Operational Environs Radioactivity Survey Summary Report, L darch.1960 through January 1966. (September 1967) 2. Peach Bottom Atomic Power Station Environs Radiation Monitoring l Program Pre-Operational Summary Report, Units 2 and 3, February 5, 1966 through August 8, 1973. (January 1974) 3. Peach Bottom Atomic Power Station, Fulton Generating Station Regional Environs Radiation Monitoring Program, January 1,1974 through December 31, 1974. (October 1975) 4. Environmental Radiation Data, U.S. Environmental Protection Agency. l 1 4 l . l

Table IV.1.1 ANALYTICAL DATA FOR AIR - PARTICULATE SAMPLES CONCENTRATION OF GROSS BETA RADI0 ACTIVITY (PCI/M3) Group I - Peach Bottom Site 5TATION j lA 18 P COLLECTION PER100 j 1/ 5 (a) .093 #.007 .0A9 e.008 74 12/29 75 1/ 5 - 1/12 .108 #.009 .100 #.008 .099 #.008 1/12 - 1/18 .17

• .01

.19

1. .01

.14

1. .01 1/18 -

1/26 .114 #.008 .lPl #.007 .128 W.008 1/26 - 2/ 2 .109 #.008 .113 #.008 .123 #.009 2/ 2 - 2/ 9 .111 #.008 .128 #.008 .136 #.008 2/ 9 - 2/16 .115 #.008 .133 #.008 .139 *.008 2/16 - 2/23 .123 #.009 .131 #.008 .132 #.009 2/23 - 3/ 2 .157 #.009 .170 #.009 .162 #.009 3/ 2 - 3/ 9 .158 #.009 .174 #.009 .lA e.01 3/ 9 - 3/16 .141 #.009 .135 #.008 .154 #.009 3/16 - 3/23 .21

1. .01

.221 #.009 .P3 d.01 3/23 - 3/30 .187 #.009 .190 #.009 .P09 #.009 3/30 - 4/ 6 .21

1. .01

.205 #.009 .31

• . 02 (b) 02 (b) 4/ 6-4/13

.25

1. .01

.28

1. .01

.38 4/13 - 4/20 .26

1. .01

.28

1. .01

.29

• .01 4/20 -

4/26 18

1. .01 18
2. .01

.lR

1. .01 4/26 -

5/ 4 .137 #.008 .133 #.007 .147 *.008 5/11 .14

1. .01

.146 #.009 .14

• .01 5/ 4 5/11 -

5/18 .158 #.009 .160 #.008 .168 #.009 5/18 - 5/24 .121 #.009 .128 #.009 .19

• .nl 6/ 1

.101 #.007 .106 #.007 .106 *.007 5/24 L 6/ 1-6/ 7 .109 #.009 .113 #.008 .118 *.009 6/ 7-6/15 .077 #.007 .079 #.007 .078 d.007 6/15 - 6/22 .065 #.007 .068 #.007 .065 #.007 6/22 - 6/29 l.081#.008 .088 #.007 .083 *.007 Semi-annual Mean.144 i.102 .149 i.110 158 i 148 (a) No sample collected due to pump breakdown. (b) Small sample volume due to loss of power to sample pump. Represents plus or minus l l

r Table IV.1.2 ANALYTICAL DATA FOR AIR - PARTICULATE SAMPLES CONCENTRATION OF GROSS BETA RADIOACTIVITY (pCI/M3) l Group II - Intermediate Distance Locations %TATION 1A 4A 4A 5 6' COLLEC1 ION PFR100

---

o-----.--------

74 1//P9 - 1/ i .nA9 a.0nx .096 a.008 00P a.00H .InA a.008 .091 8.007 75 1/ 5 - 1/12 .098 a.008 .045 a.008 .10% a.00H .091 # 008 .094 a.007 1/17 - 1/lH .)^ a 01 .15 01 .14 a.01 .15 a 01 .140 #.009 1/26 .1/8 *.00H (a) .117 *.008 .161 *. r' 0 9 .125 a.007 1/1H l 1/?6 - 2/ 2 308 a.009 (a) .lP6 a.009 .113 a.009 .10A #.006 i a.008 .107 a.008 .10A *.006 .134 a.009 .121 a.006 l 2/ 2 - P/ 9 131 2/16 114 a.00R .lPR a.008 .117 a.008 .134 #.009 .lPl a.008 ?/ 9 7/P3 16 a 01 .11A 4.009 .11a .009 .151 *.009 .110 m.008 ?/16 3/ P .lH

1. .01

.171 # 009 .1^4 *.009 .lA a.nl .161 a.008 P/21 3/ ? - 3/ 9 .166 a.009 .163 a.009 .154 a.009 .165 a 009 .160 m.008 1/16 .140 m.009 '.117 #.009 .147 *.009 .141 a.f09 .136 *.008 3/ 9 3/16 - 3/P1 .P1 a.01 .PP a.01 .?O

1. .01

.23

1. .01

.P0h #.009 3/P3 - 3/30 .1x7 a.009 19 m 01 .142 a.009 .?! a 01 .197 *.009 1/10 - 4/ 6 ./4 a.01 .PP s.01 .P0

• .01

.23 01 .P05 a.009 4/11 .P8 a.01 .73

• .01

.P4

• .01

.26

1. .01

.?S

• .01 4/ 6 4/13 - 4/20

.Pa a.01 .27 a.01 .30

• .01

.?A W 91 .P6 a.01 4/P6 .P3 a.01 .19 a.01 .17 a.01 .lA a.ol .19 a.01 4/P0 5/ a .171 a.008 141 #.008 .118 *.008 .139 a 008 .13A a.007 4/?6 5/ 4 - 5/11 .17 =.01 13

1. .01

.11

• 01

.14 a.11 .126 m.009 5/11 - 5/17 .lA a ."1 .147 a.009 5/11 - 4/id .144 0.009 169 8.009 .15) a.009 5/17 - 5/P4 .lPI a.008 .02A a.006 5/la - 5/P4 120 a.009 11 a.nl 114 #.009 5/74 - 6/ 1 .105 d.007 106 a.007 .101 *.007 .10E a.007 . 01 (b) 5/PR - h/ 1 6/ 7 .100 m.009 .111 a.009 .170 = 009 .111 m.009 .10A #.008 6/ 1 6/ 7-6/15 .046 *.007 .079 a.007 .071 m.007 .075 a.007 .08P a.006 6/15 - 6/PP .nsk a.008 .069 #.008 .069 a.007 .06% a.007 .071 a.007 5/PP - 6/P9 .n76 a.007 .088 #.00R .0RI a.009 .094 m.008 .087 a.007 Semi-annual Mean .149 i.117 .147 i.105 .141 i.104 151 i.110 134 i.119 i ) (a) No sample due to pump breakdown. Pump was replaced on 2/2/75. 1 (b) Short sampling period because pump failed af ter a severe electrical storm f and was out of service f rom 5/24/75 to 5/28/75 i l l l Represents plus or minus i

Table IV.1.2 (Cont.) ANALYTICAL DATA FOR AIR. PARTICULATE SAMP!E8 CONCEICRATION T CROS8 BETA RA10 ACTIVITY (PCI/M3) Oroup 11 Intermediate Distence Locations i l l (7A7f0N [t6 1E I7 31 37 33A 3A COLLFC7 ION PFRI00 ..............~......................................... 76 12/79 1/ 5 .016 s.007 .106 s.00/ .oA6 m.008 .080 *.007 .047 s.008 .081 e.007 .093 s.004 7; l/ %. 1/12 .666 s.007 .0A9 s.007 .09% s.006 .117 s 00A .09' s.00s .090 m.007 .112 s.00e 1/17 1/lH .11 s.01 .1'13 s.009 .35 m.01 .!E 01 .1% 8 01 .13? s.009 el" a.01 1/18 1/?6 .ith 8.004 .376 8.007 .161 *.00s .177 8 60A .137 s.008 .320 m.008 .l?? s.00n 2/ ? .477 s.004 .108 s.008 .117 8 009 .10A e.006 .116 s.009 .10? m.008 .117 e.009 ] 1/PA 7/ 7 P/ 9 .117 m.009 .l?6 8 007 .17% e.008 .113 s.c0A .l73 8.00R .113 m.008 .131 s.00A P/ 9 ?/16 .31H e.00w . 3 31 s. 0 0 R .16? e.009 .13% e.008 .318 m.006 .177 s.008 .139 s.00A ?/le. 7/73 .IW e.009 .137 m.00H .163 s.009 .131 m 609 .169 8.009 .120 m.00M .179 s.009 ?/?1 3/ 7 .14 s.01 .l71 e.008 .19 s.01 .47% *.009 .19 m.01 .166 s.009 .19 m.0) 1/ 7 1/ 9 .17 e 61 .16A e.004 .17 m.01 .161 m 009 .16A 8.009 .151 s.009 .lba #.000 3/16 .166 a.009 .116 s.003 .669 a.009 .160 m 009 .156 s.009 .l?9 s.008 .167 8.009 3/ 9 3/la. 3/73 .77 s.01 .199 s.009 7) 8.04 .?? a.41 .72 e.01 .196 s.009 .?? s.01 1/73 3/30 70 s.01 .149 s.004 16 s.01 .Pl e.ol .76 8.01 .19 s.01 .?! s.01 3/30 6/ 6 .71 s.01 .713 m 609 73 a.01 .?3 s.nl .?? 8.01 .181 s.009 .?? 8.01 ) 6/ 6 6/11 .?A a.01 .746 o.009 7A e.01 .25 s 61 .?A s.01 .23 s.01 .26

• .01 l

6/11 4/70 77 m.01 ./A s 41 .77

• .01

.??

• .Al

.27

1. .01

.26 s.01 .?A 8.01 4/20 - 6/26 .19 s.01 .1x s.01 70 m.01 .14

• .01

.19 8.01 .16 s.01 .?0 m.0) 5/ 6 .lba.00M .1/1 s.007 .135 e 60H .176 s.00H .137 e.00H .l?! s.007 .139 e.008 6/76 5/ 6. 5/11 .11 s.01 13? m.009 .16

• .01

.11 s.al el6 a.01 .32? e.009 (c) 5/11 9/17 .16 e.01 .lE6 a.009 .l*

• .01

.15 s."1 .36 e.01 .160 m.009 .18 e. '01 %/17 %/7a .171 8.00v .II? m.u04 173 *.00M .!?? e.00A .137 e.009 .16 m. 01 (d).330 m.00A %/76. A/ 1 .in? s.0?? .107 s.007 .097 8 007 .300 8.007 .111 a.007 .01 (b) 6/ 1 e %/P4 6/ I .11 s .0 ? (d)

/74 6/ 1 6/ 7

.118 s.009 .071 s.007 .lla s.009 .11% a 609 .16 s.01 .108 m.009 .113 s.000 6/ 7 6/15 .076 s.007 .069 s.006 478 m.007 .066

• 007(e).07A e.001

.066 s.006' .07H e.007 6/l%. 6/77 .o*4 e.008 .069 s.00A 077 s.007 .0?? *.006 .071 m.007 .068 s.007 .071 m.007 oM3 m.00d .076 s.006 .096 s.008 .085 s.007 .097 e.004 A/77 A/?Q .ome s.00M 0A6 s.006 e $ami-annual Mean .144 1 120 .137 i,113 155 +.130 140 t.125 .152 1.110 .134 1.090 ,152 1 .110 (b) Short sampling period because pump failed af ter a severe electrical stors and was out of service f rom 5/24/75 to 5/28/75. (c) No sample due to loss of power to sampling pump. (d) Short sampling period because pump f ailed after a severe electrical storm and was out of service from 5/21/75 to 5/29/73. 1 l (,) Short sampling per1M because pump f ailed and was out of service from 6/9/75 to 6/10/75. d Represents plus or minus i 1 ) 1 _J

-~- Table IV.1.3 ANALYTICAL DATA FOR AIR - PARTICULATE SAMPLES CONCENTRATION OF GROSS BETA RADIOACTIVITY (PCI/M3) Group III - Distant Locations STATION 12A 120 COLLECTION PERIOD 75 1/ 3 - 1/10 .109 8.008 .088 #.008 1/10 - 1/17 .138 #.009 .128 #.008 1/17 - 1/27 .106 007 .094 #.006 1/27 - 1/31 .14

1. .01

.16

1. .01 1/31 -

2/ 7 .103 #.008 .097 #.008 2/ 7 - 2/14 .171 #.009 .132 #.008 2/14 - 2/21 .07

1. .0)

.070 #.009 2/21 - 2/28 .16

1. .01

.168 #.009 l 2/28 - 3/ 7 .17

1. .01

.158 #.009 I 3/ 7 - 3/17 .154 #.007 .15 0 ' #.007 3/17 - 3/21 .22

1. .02

.19

1. .01 3/21 -

3/27 .20

1. .01 18
2. .01 3/27 -

4/ 4 .P07 #.009 .204 #.009 4/ 4-4/11 14

1. .01

._69 #.009 4/11 - 4/18 .27 01 .28

1. .01 l

4/18 - 4/25 .21

1. .01

.20

1. .01 4/25 -

5/.2 117 #.009 .123 #.008 j S/. 2 - 5/ 9 .12

1. .01

.105 #.009 l 5/ 9 - 5/16 15

1. .01

.134 #.008 5/16 - 5/23 .153 #.009 .136 #.008 5/23 - 5/30 .129 #.009 .117 #.008 5/30 - 6/ 6 .109 #.008 .102 #.008 6/ 6 - 6/13 .079 #.008 .057 #.007 6/13 - 6/20 .059 #.008 .072 #.007 6/20 - 6/27 .089 #.008 .085 #.008 Semi-annual Mean .146 i.104 136 i 103

1. Represents plus or minus

b ~ 0 1 9 7 0 7' 3 5 9 4 7 3 3 0 0 0 0 0 0 0 1 = + i 1 i i i 1 ) c n 0 4 8 6 0 1 1 ( a 2 2 7 1 2 8 4 e 1 1 1 2 1 0 1 S M N = O I T 3 9 e AT x 6 8 2 8 5 0 8 1 1 2 2 1 1 2 S a M I I I 8 0 0 9 5 7 7 8 7 5 6 0 5 5 P n 0 0 1 1 1 0 0 U i ~ O M RG 5 7 / 5 5 5 5 5 1 7 7 7 7 7 3 / / / / / / 8 7 5 0 7 n 1 2 2 2 3 2 o / / / / / id 5 2 3 4 5 6 l t o 7 l ci / 1 8 7 5 0 a S er 3 3 2 2 2 3 r E) l e / / / / / / e L3 lP 1 1 2 3 4 5 v 8 PM o o 3 M/ C AI SC 2 5 8 0 5 7 2 P 5 4 7 7 5 4 1 E( 0 0 0 0 0 0 1 A 3 TAY ) 3 LT b + i i i i i UI ( CV n 3 2 2 2 7 1 5 2 II S a 1 4 8 3 2 8 4 3 TT N e 1 1 1 2 1 0 1 RC O M AA I 1 PO T 3 4 I A = /. R D T IA S 7

1. A R 1

V I 3 IYA I x 6 9 4 0 8 4 4 l EB U ~ 3 5 LT a 1 1 3 3 1 1 = EKE P M 1 bE O aWS R 4 4 7 9 2 1 T S G 1 1 FO n 3 0 2 6 2 0 1 1 1 0 0 0 OR i = B G M S 6 EF UO L 5 AS 7 6 3 4 0 7 1 2 VN 5 3 6 2 4 3 2 D 0 0 1 0 0 1 n 4 1 O 0 d B 2 NI AT a EA ) + i i i i i i A MR a I ( n 1 6 2 0 5 5 0 B 4 YN a 2 3 8 5 3 8 5 I A LE S e 1 1 1 2 1 0 1 2 A 1 HC N M TN O A 3 NO I 1 s OC T s n M A s n o T n o i S o i t 0 8 8 i t a I x 9 7 3 8 6 1 8 t a t 1 a t S a 1 1 2 3 1 3 P M t S U S f O f o R f o 9 1 5 1 5 5 o s G n 8 1 3 8 0 6 6 s t 0 1 1 1 1 0 0 s t s i t s i M s i s i s n s n o n o c o c 5 c I 7 I I / I I I 2 5 5 5 / 7 7 7 5 5 p p p n 2 / / / 7 7 u u u o 2 0 6 / / o o o id 4 3 2 1 9 r r r t o 7 / / / / 2 l G G G ci / 3 3 4 6 / l er 9 6 a l e 2 2 2 0 6 r ) ) ) l P / 0 0 3 2 1 e a b c o 2 / / / / / v ( ( ( C 1 2 3 3 4 6 O l 1ll. l; il1

l TABLE IV.1.5. ANALYTICAL DATA FOR AIR PARTICULATE SAMPLES 1 3 Concentration of Gross Beta Radioactivity (pCi/m ) Comparative EPA. DATA 1 Harrisburg, Pa. Period M_in. Max._ Mean. January 0.04 0.08 0.06 February. 0.02 0.09 -0.06 March 0.04 0.14 0.09 = 1 April (a) (a) (a) May 0.03 0.09 0.07 l June 0.02 0.06 0.04 (a) no sample i 4

I 'i M 4 4 4 4 f. M nnnnnne4mennnnn n 4MN44M OCOOO O 00COCOOCOOO0000 O O OOOOCO '4 e.4 e4 e e e e e e4 e e e e e a e e e e e e e e e e o e e e e i O O O f 4 N e H +1 M N +1 +1 e +1+t+1+1+t+l e M +1 M N +4 H +4 +6 +1 N N +1 HNNH j I cui V V V a c0 @ N m c0 @ c0 m n 5 m e48 N @ c0 @ CD c0 m CO cPt.4 m o e-4 90 m OOOOOO O O C O e4 C O OOOCOOOOOe404 MOO O. 5 gui e e e e e e e e e e e e e e e e e e e e e e e e e e e MMMN MMN MMM MN MMMMMMMMMMMMMMM OOOO OOO O00 OO 00OC00000000000 n C O. O. O O 0 0 0 O C 0 0. C. 0 0 0 O COOCnOOOMNOOOMO eoo n e e e eC e e eOO e e e e e e e e e e e m O CO O e H +6 +1 +1 +1 +1 M +t +1 N N +4 +1 H N v + 1 +1 +t j I +1 N N H e H +1 +1

• H +1 H o

v vv 1 m c444 c4e 4ce nM4 e4NeneONNN4e4cn 0000 000 000 C QC C 0 0 0 0 0 *.e O 0 0 0 0 0 0 0 k OOOO OCO OOO OOO OCOC00OCOOOC000 M N

• e e e e *
• e e *
• W eJ 0.E i

l M O N co N c0 co N c0 N c0 co co N c0 c0 @ m c0 m m m ll e4OOOe4OOOOOOOOOQCO ed o ed e-1 O e4 ed o .e o e4 e4 ed O e=E c N I C0000000000000000 0COOCOGCOOOC00O H C

• * * * *
• e e * * * * *
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• U vvvvvvvvvvvvvvVvv vvvvvvvvvvvvvvv 4

D t' U N H e4 gus m o co m c0 vi e c0 m c0 m e e c0 e e N m all M i ed O O O N O O O O O O O O O O O O ed e4 e4 et O e4 e4 e-4 e4 e4 ed e4 *.4 e4 e4 gy g h e e e e e e e e o e e o e e e e e e e e e e e e e e e o e e o e l (A % O VVVVVVVVVVVVVVVVV ', VV VVVVVVVVVVVV l Ad *8 v4 J V4 M U b ei! H gn. O mNN@ NN@N@NNNNNNe6 m c0 cP6 m to m m CD c0 m m m m m e 4w 4 O D O O,4 0 0 0 0 0 0 0 0 0 0 o f.' OC'OCOOOOc40000OO V V V V V V V V V V V V V V ',' V V ad.gl 3 e e e e e e e e e e e e e e e e e e e e e e e e e e e e e o e e i W H22 W VVVVVVVVVVVVVVV e H eit O > to N MQ%H A. :34 N E cd ad m a 4oHH m N c0 m c0 co N to N c0 cJ c0 h to c0 @ m c0 m m m ] s00om i e4 O O O ed O O O O O O O O O O O O e4 O e4 e4 o e-4 e4 O e4 O e4 e4 4 O e4 1 ag; tes saa o e e e e e e e e e e e e e e o e e e e e e e e e e e e e e e e e H ke De U VVVVVVVVVVVVVVVVV VVVVVVVVVVVVvvV e.3 M Z j m O H ay U il Z% k O x sea 0 z<O 4 m c0 m m co m c0 QN ed M C e4 O N O e4 O ed O ed e-4 M Q e e4 0 4 ed e4 e=4 e4 e4,=4 e4 e4 e4 e4 d ed e4 e 4 ed el 1 00000000000000000 0 0 0 0 0 0 0 0 0 0 O. 0 0 0 0 o U se e e e e e e e e e e o e e e e e e e e ra. o s0 vvvvvvvvvvvvvvyvv vvvvvvvvvvvvvvv m H i <st i gs c4 m m m e m c0 M

• =0 C ed O N ed e4 O e4 O e4 e4 e4 O,,, e.4 O e4 e4e4 e4 le4 e4 e4 e a e4 e4 4 4 c4 eJ ed OOQCOOO 00000000 CO C00000OOvC00000 es:

1 e e a e e e e e e e e e e e e e e e e e e e e e e e e e i U N VVVVVVVVVVVVVV\\/vv VVVVVVVVVVVVVVV { M I H keel t as: N i z M e e c0 e e c0 c0 e e m mN 1 O e4 O O O N O O O ed O O O ed O ed e.e c=4 et ed e4 e4 e4 e4 c.4 rei e4 e4 e4 c.4 i .i C0000000000000h,OO .ql e4 00 000000000000000 e e e e e e e e e e e e e e

• e e e e e e e e U

V V *J VVVVVVVVVVVVVV VVVVVVVVVVVVVVV 1 \\ n n c as .O 1 O w w 1 et 's: as: O att .I M es so as: <a! so so 4 n N ** N Men N N .s: so er: <s: re so e n 5 e4 N M c0 1 4 c1 e4 N f9 4 4 n @ M M e4 M M MM

• =4 e4 e4 e4 N M 4 ur n @ e4 e4 e4 M M M M M

a l D N N ) e4 n N M N I Ql N H N O I 4 5 3 M "O 4 4 M O N N I l j u - n G k N e=4 G N N f e.4 n. N O N N O ed e4 N F Y l

9 519118537560483 60 8582299861 110110111101101 11 1222211122 0 u R 43 333333333333333 43 3354434343 00 000000000000000 00 0000000000 00 000000000000000 00 0000000000 5 9 i i i2 2!2 1222i 22 22 2ii2i t2 b N 56 781008899979989 21 4433114404 00 001110000000000 11 1111111111 r 00 000000000000000 00 0000000000 Z S E L P MA 0 9 9 9 9 - 9 9 S 6 11 10.1111101011101 11 1111111010 00 000000000000000 00 0000000000 E o T C A L U C I ) 1 T 3 5 R m 11 1 111111 11111 111 1 1 112 111111 1 ) AS/ t t PI 1 C n SC oRY p c IL( ( AANN 0 9 9 899999 8 899 999 9 99 9 8 8 6 EAO 4 10 0 000000 01000 000 1 0 001 110101 0 .T' I l IMT K I<<<<< .SUA V ORR I PTT MCN E OEE 9 9 9 L CPC 9 9 9 9 9 B SN 11 1 011111 01011 101 1 1 111 111101 0 A Y O o T LAC M <<<<< <( < < HM TME NAD OGI M L 0 C 4 R U 1 11 1 111111 11111 111 1 1 112 111111 1 O N 00 0 000000 00000 000 0 0 000 000000 0 F a B A T A D 1 L 3 11 1 111111 11111 111 1 1 112 111111 1 A 1 00 0000000 00000 000 0 0 000 000000 0 C I I <<<<( (< < <<<<<< T L l Y A NA 7 3 1 1 11 1 111111 11111 111 1 1 112 111111 00 0000000 00000 000 0 0 000 000000 0 s C (< ( (<<< <4<<< <(< < < <<< <( <<<< n o i AD A AD t 22 AB AAB B4571238 22 AB AAB B45 a 11 112344561113333 11 1I234A5611 t S 5 5 5 7 5 7 7 / 7 / / 8 / 7 6 2 0 2 2 n / 3 / / o 2 / 3 4 id 3 5 5 t o 5 ci 7 5 7 7 er / 7 / / l e 1 / 8 0 lP 3 2 2 3 o / / / / C 1 3 2 3 l li

s 6 55555 55 434444444444455 44 00 0 00000 00 000090000000000 1 i2 h 22t2 tt i2222222t2ii2 R 12 71074 55 813891290100732 11 u 12212 11 011001101111011 R 33433 33 323333333333333 33 00000 00 000000000000000 00 00000 00 000000000000000 00 5 9 i1i1 ti t1121i21 t 1i2! t2 b N 51315 00 544454444443664 55 11111 11 000000000000000 00 r 00000 00 000000000000000 00 Z S E L P M 0 9 87888888888889 88 A 6 11111 10 000000000000001 00 S 00000 00 000000000000000 00 o E C T AL ) U C m 1 I / 5 9899999999999 99 T i 11111 11 000000000000011 00 ) R C r t A p C <(<<<<<<<<<<<<< nP ( o 3 cR1N ( ISO AYI 0 9 99 99 7 c7777777777789 87 LT 4 10100 00 000000000000000 00

6. E A A TNR K

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1. I A T VS N

IOME PUC EMRN 9 LOTO 9 9 87888888888889 88 00 0 0 0 0 0 0. C. 0 0 0 0 0 0 0 1 BCCC 11111 10 A E o TYPE M LSD H 1 TAL NMC OMU 0 MAN 4 9 9 C 1 11111 11 101111111110111 11 R 00000 00 000000000000000 00 O a F B <( A TAD 1 9 3 11111 11 101111111111111 11 L 1 00000 00 000000000000000 00 A C I <<<<<(<<<<<<<<< I TTLA N 7 A 3 9899999999999 9 1 11111 11 000000000000011 10 00000 00 000000000000000 00 s C <(<(< (( <<<<<<<<(<<<<<< n ) o c i A AD A( AD t 71238 22 AB AAB B4571238 22 a 13333 11 1I2344561113333 11 t S 5 5 7 7 5 5 / / 7 7 6 5 / / 2 2 1 0 n / / / 3 o 4 4 6 / i d 5 t o 5 5 5 c i )7 7 7 5 e r t/ / / 7 l e n0 7 6 / l P o3 2 2 5 o c/ / / 2 C (3 3 4 / 4 lll! I

l

11 0 1 1 1 0 1 0 0 1 0 0 0 0 0. <. u R 3 5 0 0 9 b 3333 3333333333 33 N 000020000000000 00 0000000000 00 0 0 0 0.4 r Z <<<<0<<<<<<<<<< 0 S E L P M A 9 9 9 9 9 S 6 101111101011101 11 000000000000000 00 E o T C A L U C I 1 T ) 5 R 3 1111 111111 11111 11 A m r P / C <<<<( Si RIc 9 0 ) IS p tAY( n L 0 98999998 8 99 89 99 oEAN 4 0000000010 00 00 00 cTNO ( IAI K <<9<< p m S T 0 u OMA

6. P U R p

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l. OTN 9

n t VCCE 9 9 9 9 9 w I EC 1011 111010 11101 11 o r d e YPN o k w ELSO M a o LH C e m p BTA r ANME b o f TOMD d o p k MAI 0 m a s CL 4 u e s R C 1 1111 1 11111 11111 11 p r o O U 0000 000000 00000 00 b l F N a o t p o B m t A e u T u p e A d u o d D 5 t 1 7 5 L 3 111111111111111 11 / a 7 A 1 000000000000000 00 5 u / C / d 1 I I 1 1 5 / T o 7 5 Y t / L 2 o A 5 / t 7 2 N / 5 A 7 9 o 7 3 2 t / 1 111111111111111 11 / 4 000000000000000 00 2 5 / s 1 7 5 / C ( <<<<<<<<<<<<<< m 8 m o 1 o r / r f 1 f d d d n e e e o t t t i A AD c c c t AB AAB B4571238 22 e e e a 112344561113333 11 l l l l l l t o o o S c c c e e e l l l p p p m m m a a a s s s 5 5 7 o o o N N N n 7 / o / 7 i d 9 2 ) ) ) t o 2 / a b c ( ( ( ci / 6 er 6 l e 0 l P 1 3 o / / C 6 5 i

6 111 0 0 I5 000 3 I9 000' 0 0 0 I - 11 + - ) 4 Pb 55500< 6 UN 35100 0 O( 00113 R r 00000 0 GZ 8 5 3 755555 /77777 d S 1///// n E n 387507 a L) o /22232 P3 id 1///// A t o - 23456 3 M m A/ ci 4 - - - - - 3 Si er 755555 c l e /77777 E p lP 6///// 2 T( o 218750 3 A C /32223 L6 2///// U0 112345 1 C1 3 I - ) 6 0 T) b0 9 87551 0 Rh ( 1 3 26536 7 1 AR 0 00000 1 P( S) 1 u Nh 1 1+ 1+ 1 2 RR OR 5 88529 5 1 I I( 7 81007 1 1 7 AD T u 0 01210 N AR 1YA T 4 L S 1 VK5 5 77686 0 IE9 I5 2 31310 7 E - I9 0 00000 B 0 eW) 000000 6 0 l b P) bFN Ub 1 +. + 5 + 1 aO( ON 338731 5 6 T R R( 4 68243 2 D 6 SZ G r 000100 2 0 E Z 000000 d B 1 0 n 4 UF LO a dn A 6 0 A a VN 0 001309 3 O 1 4 26059 B 4 1 NI ) - 000100 1 A 2 AT a) EA ( h 11+ 1+1 A 1 1 MR R 007773 A 3 2 T S( 6 81302 1 s 1 YN Nu 001211 s n s n o LE OR HC I n o i TN T o i t NO A i t a OC T 21222 t a t 6 M S 134110 a t S 7 5 000003 t S 0 I9 000000 S f 0 0 f o P) 11+ 1+- f o Ub 37773( o s 6 ON 45834 s t 6 R( 00010 s t s 0 G r 00000 t s i 0 s i s Z i s n s n o n o c 5 5 o c 7 5755 c I /57/77 1 I n 2//6// I 1 I a //0219 e n 223//2 p p p M o - //46/ u u u i 433 - - 6 o s o 1 t 7 - r e r 1 cd /55775 G G G s eo 977//7 r li 2//06/ ) ) ) e l r /22321 a b c v oe 2///// ( ( ( O CP 123346

3 1 S 2 3 C 9 7 9 1 1 SE 5 6 L 5 5 P M 4 4 A S 0 8 9 NO I) R T1 S 8 2 6 5 A/ Ti 5 2 IC P p 1.I ( C 2.E N VRO 3 I PI T ERA 5 3 5 9 6 l OR 9 bFT 8 a N TAE R TC S AN DO 4 C LAC I T Y L 3234 22 33232 2 2322 2 A A 2 N T A E 3 G 491 3 4785 2 40 61 36 51 62128 1 4277 4 ) ES _ MR _ 2457 90 4755 0 310390 UE - 4968 93 16266 4 396988 LT OI 21 21 35 21325 3 213343 VL ( 226413 226813 226413 1 2 1 1 ////// ///// / ////// h 234567 234467 234567 C I T CD - EO - 522641 522681 5226A1 LI - 2 LR - ////// // //// ///// / GE - 1 23456 123446 1 23456 CP - 5 5 5 7 7 7 N - O - I - T - A - T - A B M S - l I 4

3 8 1 S C 0 0 0 0 0 0 0 1 1 5 5 1 1 SE 0 0 0 0 L 0 3 0 4 4 7 P 3 3 i M 0 5 W S 9 N) g R I m S 0 0 T/ 3 8 0 0 Ai 3 1 4 7 TC I p P(

2. I CY 0

2. E T 0

0 0 0 G 0 VRI 0 0 0 0 0 4 IPS N 4 2 3 7 4 eRE 9 l OD 8 bF a E R TAC S 0 TA AF 0 DR 5 U LS A C I 0000 00 000000 0000 0 T 0000 00 000000 000000 Y 2122 23 212232 212302 L A 3 AN T E A B 000 0 00C000 00 G 0000 00 00O000 0000 0 71 50 01 14E042 1200 0 4123 62 411211 3188 5 ) ES _ MR _ 2457 9C 47550 3103S0 UE _ 4968 93 162664 396988 LT _ OI _ 2121 35 213253 213343 VL ( 226413 226813 226413 1 2 1 1 ////// ////// ////// N 234567 234467 234567 O I T CC EC 522641 522681 522641 LI 2 LR _ ////// ////// ////// OE _ 123456 123446 123456 CP _ 5 5 5 7 7 7 h _ O _ I. T A _ T _ A 3 M S _ l 1 4 i

1 l i ' Table IV.I.3 MEAN RADIOACTIVITY CONCENTRATION IN PRECIPITATION f (PCI/L) i l Environmental j S t a t i o n ___N o. G. BETA Sr-89 Sr-90 Cs-137 J 1A 23 1 44 <4 3.1 7.6 1.1 2 .6 1B 26 2 40 <7 1.3 2 2.5 1.0 2 .7 4M 14 32 5.0

• 2.8

.62 .1 .6 2 .7 overall Mena 21 2 38 5.3 1 4.1 1.6 1 4.3 .9 2.6 MEAN RADIOACTIVITY SURFACE gENSITY IN PRECIPITATION (PCI/M ) l Environmental Station No. G. BETA Sr-89 Sr-90 Cs-137 i 1A 188Qt3240 <300 180 424 75 t 71 l 1B 198Qt2160 <500 105 2 212 75 1 71' 4M 112Q:2040 450 1 141 55 1 42 70 ! 113 Overall Mean 166Qt2510 417 2 344 113 1 241 73 68

1 TABLE IV 2.4 ANALYTICAL DATA.FOR PRECIPITATION SAMPLES Comparative EPA DATA Harrisburg, Pa. j i Period Gross Beta Gross Beta-pCi/l pCi/m2 January 2 50 February 2 80 March 8 50 April (a) (a) I May 4.7 170 f June 2.1 180 (a) no sample l t I i i ________________________m______._.____________.._________m_ __m- ___...m_m. ____.__-2_ ._m_ _ _ _ _ _ ___ _ _. _ _ _ _____a

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3. C B. C 111 I

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i Table IV.7.4 MEAN RADIOACTIVITY CONCENTRATIONS IN FISH SAMPLES 1 White Crappie Environment C. ALPHA C. BETA L-40 N. BETA C. GAMMA St-89 Sr-90 Cs-137 Station No, pCi/R sah pCi/R ash pCi/R ash pCi/R ash egm/t pC1/R ash pCi/R ash pC1/R ash IEE(a) (3 38222 29211 <10 .032.05 <.6 .62.2 422.37 IW (a) (4 292 3 252 4 9.321.2 052.08 <5 .72.6 .651.84 l 1X (a) <4 282 9 25210 <10 .032.06 (10 2.124.2 .182.44 41 (a) <2 44226 37224 9.92.7 .042.06 (10 1.512.0 .34212 4J (a) <3 42210 312 8 (10 02 <.8 .72 .39 Maan (Stations 1EE. 1W. 1Y, 41, 4J <3 38222 30217 1021 .042.05 (6 1.222.1 .391.47 6H (b) <3 50216 412 5 12210 .08 <2 .8 <.2 overall Mean <3 39223 32218 1024 .042.05 <6 1.122.0 .372.46 Channel Catfish Environment C. ALPHA C. BETA K-40 N. BETA C. CAMMA Sr-89 Sr-90 Cs-137 ftation No, pC1.R ash pCi/R ash pCi/R ash pC1/R sah cpm /t pCi/R esh. pCi/R ash pC1/R ash IEE (a) <3 47216 39210 lit? .022.05 <.9 .901.30 .361.16 IW (a) <3 60 45 (10 .22 (2 2.2 <.6 IK (a) (3 14i5 45128 1125 .062.16 <2 .482.51 1.222.3 41 (a) (* 34115 34221 1021 <.02 <8 <.8 <.2 4J (a) <3 40213 36115 1022 032.05 <.7 .272.64 .142.13 Hean Stations IEE. 1W, 1Y. 41, 4J <3 43219 39118 1125 .062.15 (2 .821.3 .6tl.2 6H (b) (3 25t26 282 5 1021 <.02 <5 6 <.6 overall Mean <3 41123 37219 1024 .062.14 <2 .821.2 .521.2 Mean Radioactivity Concentrations in Channel Catfish and W:aite Crappie Environment Collect C. ALPHA C. BETA K-40 N. BETA C. CAMMA Sr-89 Sr-90 Co-137 Station No. Period Data pC1/g ash pCi/R ash pC1/g ash pCi/R ash cpm /t PCi/R ash pC1/R ash pCi/R ash <3 41t16 33213 1012 .052.01 <.7 .502.81 .352.37 Quart. I 16 3/17

---

No fish could be obtained from this station due to high river flow-------

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1 0 80 '2 7 111 7 4 t 0 0.0 8 3 3 3 4 1 1 1 52. 0 3 <C s <<6 4 s C C 331 000 50 0 0 111 t-9 34 6 9 262 3 111 1 4. r 1 r S S 1 e l 1 p 9 9 4 4.2 2 m 8 0 2 8 3 1 a 322 1 r 3 s r 1 S 2 1 S dnoc d e e s b M i d r e A ))9 bb c t S G ((0 s a E e p L P G d i M c A ) ) s i S h h a t s s n H a a r a S A e I g T g t e F / E / r s L i B i a u 1L E c 000 0 C u a .E U p 111 1 p q c ( e H S ( N

8. S S

S t b V I n L n s IR T i L i r d O E i e eF T n H n f m l F o 0 321 7 S o r bA O i 4 1 l i e o. aT S t 912 i t h fd 1 TA a K 221 2 a t re D r r et t t g pc L n n n e A e e i el C c A c r rl I n T n u eo T o E 000 o A d wc Y C B 111 C T L 11 0 E d ct 2 B 000 0 e eo A 000 N G 222 111 1 t sn A < << < c y G e l s l aa .nw l a o c B. a o d n ))) n ))) o aaa o aaa n i ((( n sI mi i ((( a a aI mr t e 555 t e 555 e e ct 777 M ct 777 M w ae ea /// ea /// ngp lD 222 l lD 222 l ao l 222 l l 222 i liss a a pt si o /// o /// r r C 444 e C 444 mcoh e v v aert O O sS g r n n onoo o o NiNf i i t 901 t 901 a 11 a 11 ) ) t t a b S S ( ( 1: t

s. 9

5. s.

74 1 4 9 0 37 4 1 3

0. 3 00 0

e m

• 6 em 9

7 R 9 3 8 5 8 1 3 1 85 1 S 5 2 2 1 8.1 1 + + 7 Q 3 9 s C 2 2 1 1 4 6

0. 3 1 3 0

1 1 4 0 1 4 M 9 8 6 7 + + W r 2 0 8 S S 4 3 0 0 0 n0 00 9 2 2 1 I 1 1 1 8 A T e s e* mm r 1 5 5 E S ( C N R. O N I 0 0 0 00 00 T 4 7 4 34 43 A T E S G A 9 7 E E T 2 2 LF 0 0 V E 0 M 7 2 6 38 67 B. 4 2 2 A m m m =

• e=

I N 2 1 N S) h 4 4 0 N N s O a 4 I O T g k 0 0 I A/ 9 9 4 25 62

2. T )

T1 1.E C 1 1 6 37 57 Ah G p R s 1 0 9.E (

9. T a 1

3 VV 7N 0 0 1 1 I n 1 E g 4 9 Ro 0 0 0 00 00 C/ 1 2 2 EC i 1 1 1 11 1 1 eNi K LFt B a A l OC 2 7 AA r T 6 m* ee bC p 8 9 tit F a ( A n 8 TY D ec T L n G 0 0 0 0 00 I A o 3 7 1 01 00 V CC 2 7 1 61 1 1 I 7 1 I T 4 5 TY C A 1 1 L A T 0 A 0 E 3 2 2 N I 3 2 A 5 7 67 P7 D 5 0 4 A C 2 4 D = *

• e e =

R 1 1 L N A. A G E 2 5 8. 12 35 M 6 1 11 71 A 1 2 H 1 1 P L 4 t 2 A. S 5 1 N N O O E C I I N 3 2 E 5 T T l 1 1 P 5 A A v Y a T T Ps E E T R C G UE s G E E E ON n E. V V CS LI n oD L. O UN A V l o i6 P. L D O TO T a. i t n M. E L L T I NA t o yt a& a EN AE nN l a t e A I I I S F W W LO CP e l t S5 M s mn aS u n no i d, l N i oi td1 eN l O m rt ne t4 a I i a et c r r vt t c e, e TE - o CT nS oe f A v EA - 7 7 7 7 7 s E Pf f3 o LO - u f a L / / / 1 / l A n O 6 6 6 6 6 p U C s tn 5 5 e 7 7 7 7 7 serp N e O R I T A T 4 M 0 S 1 3 4 5 6

Table IV.10.1 ANALYTICAL DATA FOR MILK ftAMPIES Concentration in pct /1) G.8 ETA k 40 h.tETA SR 89 SR SC CS 137 1 131 (CLLECT10N 5IAllCh CATE Nearby Farms F ARM G 75 2/17 1210 # 50 1200 # 100 < 100 < 3 4 4 1

9. 6 s.9 4/21 1100 a 100 1200 4 100

< 1CC < 7

8. 3 s.9 6

s2 <.1 5/12 1200 e ICC 14CC 8 10C < 100 <4 7.1

1. 6 7

a1 <.08 F ADM H 75 2/17 1300 s 1CC 12CC W 10C < 100 < 2

4. 6 s.5 10 5 e.8 4/21 12C0

1. ICC 1000 8 100 100 8 100

< 3 4.4 a.5 8 8 2 5/12 1200 4 100 1400 e 100 < ICC < 5

4. 6 s.8 6

e 1 <.09 FakM J 75 2/17 1400 4 100 12CC # ACC 20C 8 10C <4 4 e1 10 s1 4/21 1070 s Sc 1000 4 1CC < 100 < 10 9.3 8 7 13 2 e.5 (.1 5/12 1210

• SC 1300 e 100

< 100 <4 14 e1 14.7 s.6 <.2 i l Intermediate Distance Farms FARM 0 75 2/17 1410 e 90 1100 a 100 30C

1. 1CC

<1 4.1

1. .4 16 4 2 4/21 1200 e 40 10C0 e ICC 20C
2. ICC

<3 1.2 a.6 7.3 s .4 5/12 1400 s 100 11C0 s 10C 300

1. 100

< 10 11 a2 6 8 1 <.1 FAHM k 75 2/17 1200 8 100 1200 e 100 < 1CC <2 4.6 a.4

8. 7 4.8 l

4/21 1100 s ICC 11CC e ICC < 100 < 10

4. 8 e.8 5

a2 5/12 1200 s 100 13CC e ICC < 100 <6 8 e1 8 s1 <.3 FApe L 75 2/17 1300 e 100 1100 # ICC 20C a ICC <2 3.2

1. .5

7. 0 m.8 4/21 1300 s ICC 12CC e ICC 2CC

1. 1CC

<8 6.2 a.6 9.0 s.5 5/12 1300 # ICC 1100 # 1CC < 100 <4

5. 9 e.7 10.4 e.e

<.3 FARM N 75 2/17 14CC 4 1CC 1200 a 100 200 8 100 <3 11

1. 1

6. 3 s.7 4/21 1000 4 100 1000 # 100

< ICC <6 11.8 s.e 8 e1 5/12 1110 4 SC 1000 4 1CC < 100 < 10

1. 2 9
2. 1

<.2 FAWM N 15 2/17 1030 s SC 88C s GC 100 8 100 < 2

7. 7 e.5 to a1 4/21 1200 m 100 1100 s 100 200

1. 100

< 9 6

1. 1 AC e 1 5/12 1300 e 100 1100 s 100 200 a 1CC

< 10

9. 0 s.8 10.1 e

.6 .2 Distant Farms FARM A 15 2/17 18C e 60 73C 4 70 150

• SO

< 1 3.5 e.4 6.8 s.7 4/21 107C a 90 1200 # 100 < 1CC < 3 14 e.5

6. 7

1. .5

<.1 5/12 1200 m ICC 110C # ICC < 100

3 3.2

1. .5 14 s1

<.2 FARM P 75 2/17 1100 e SC 11CC 4 1CC < 100 < 2 5.5 8.7 10.9 4 9 4/21 120C 8 100 1100 e 10C < 100 < 4 2.5 4 4

5. 8 s.9 5/12 1130 4 90 110C 4 100

< 1CC < 4

6. 4 8.7 5

e1 <.1 FAR* C 7 ') 2/17 940 e 60 41C e SC < 10C < 3 6 8 1 13 4 1 4/21 12CC 8 1CC 100C 4 1CC < 100 < 20 7 s3 6 8 2 <.1 5/12 1C90 s 50 1100 a 100 < 100 < 8 5 a1 5 e 1 <.3 Represents plus or minus

4 786 2 0 9 447 9. 39 7 945 1 7 0 3 0. 3 5 6 1 7 5 1 7 3+ 3+ 1 f+0 1 1 1 111 %_ 79 2 2_8 18 1 f 697 7 2 2 0 8 012 4 0852 s s 099 9 978 8 0 68 8 8 C 9789782 C 1 1

1.

2 682 8 9 360.0 27 8 4 68 7 0 253 3 5 23214 _7 M f+1 f 1 9 9 111 %_ 0 59 +- 111f111 7904551 8 1 08 6 089 5 1 2 36 7 S r E r 4 78 6 6 67 6 534 4 6 S 2465649 5 L S P MA S K L 9 I 9 8 M 8 0 3 74 3 278 6 295 5 5 r 2315536 65 N r S I S N 2O .I 0T 1A) 0 000 0 0 .R1 A 2 0 718 4 000 0 2 A 0 VT/ T 1 00 7 111 1 600 3 1 T 0002002 INi E ! 00 ! 1 1 11 E 6001001 EC B 0 11 0 000 0 C<< 0 0 B 111111 2 0<<0< eC p 3 1 866 7 2 0 3 lN( N 1 1 111 1 1 1 1 1 2 7 1 2 bO aC T 0 0000 Y T 00 0 000 0 00 0 0 0092300 0 5011243 I 0 0 32 9 672 0 700 8 8 V 4 0 21 2 212 2 320 2 2 4 1! I 2 !1 1 21 1 111 i 0100000 T K 1 00 0 000 0 001 0 0 K 1 07707 C 77 1 082 0 10 4 1 0 00221 A 03 2 101 1 91 0 1 1 1111 O 11 1 111 1 1 1 1 I DA 0 0 0 000 0 00 0 0 0000000 R A 9 40 0 232 6 356 3 6 A 2064223 T 1 11 2 322 2 211 2 2 T 3122113 N E

2 1

! 1 11 E 1 1 A B 0 00 0 000 0 000 0 0 B 0000000 5484733 0 20 1 766 3 764 9 9 E M G 3 12 2 212 2 9 11 0 1 G 0103122 1 11 1 111 1 11 1 1 1111111 no i t e 7 12 712 712 ct 1 21 121 121 ea / // /// /// lD 2 45 245 245 na l e M o C ) l N a u ) e ) M ) n n lC a n lJ t N l, mp a& a aL a& e lA M ai u u ru u i ao ) nH d M nK ) nB um l d e n, t C n F r J n e G y AG m L AD n AA l iS ABCDGH ( a v ( as b s, ( rs rmH in emK in t mB i n r i m m ma e d r r ma sr, ma t r, ar, eaG ee naD ee i aA ee v na a NF( SM IF( SM DF( SM O IF F

4 ll l li EIti I I 4 a5, l NNmNN M i y yvvv

== 8 9 m 8 4 0 t I I 1 N m e t\\ m e e e e e C I ea aa e Q l t ~ 4 N f N. e e e e l NPD4D I i I l 44444 i e e e e e 9 1 6 Y Y Y Yv 1 2 8 / ti I' M 5 l Mg I ococo ococe occco sg i mmmNm NNNNm mmmmm Nmn ~ e a n anvu a e ap n a aer n 4r a:: 0 1.> s m m I W g dud I oco o cocco occoo Hmmm I t% N N m 1 4<>4 W N t* 44 Eh*S -ab- &aywe a Mo a Nm i NT4 oCOCO o oo 34,g e e e-e NNNNm mee-~ $kU* 1, auma. ..u.a .amma c u ea a 4 l W f h, M t I a o tf ft CCCoo o Co C l e e eC e < <J Cf O1hMo wg$ NE@mE

==mma m>@mm HN d 8 9 Ybg f 4:; i 1 ooCoo ocooo oocoo .h3 .l 4 l mmmN= m an m.= m mmmmm W W I g a Ts i e t C 4 ocooo oocoo m i CCCCC $mNM7 Dom >D l l MNMMN NNNNm mmmmm + B i 1 7omNM 7omNM 7omNM @ omNM k i fDeDC @ZDCD fC@@C DDDCD O C1 7 O' @ O @ 7 0.i -.=== @ &.O.= & O @@O&7 m @@7 = 4 =m-mm

== m.= = .=m-== p 1 TTtST TT21E se m.= m m m 9 DWftf fDDC@,DTDWf D@Dff 3 0 o e I k u 9 14 N c 4 D .C 0 e m +3 m 8 ) b i m e o c. 0 W W h. o i .J C k 8 w G H Q g t Z m L I o D o I v 4 T I w I i 2 4 9 C.= e 4 kW I UN 8 W4 8 m .J C t N .J l N O 1 4 V i e i e 4 N

diory h 1t 3/ 2 1i C I p hsa 2 0g 3 9/ 1 i rC 3 S p 4 h s a 9 g 4 8/ i S rC E S p L PM AS T h I s B Aa B T A Eg 9 6 3 R B. / f 1 1 3 2

2. N NC 8

8 6 1 1I p 1 5 3

1. N VO II T

eA h lR s bI a aN 0 3 1 9 TE 4g 1 3 C / 1 1 f N Ki 8 6 9 O C 5 9 C p 1 YTIV IT h C s A Aa O T 1 8 9 I Eg 1 3 5 D B. / 1 f 1 A i 6 8 6 R GC 2 1 3 p 2 1 N AE M no 1 1 1 1 i 2 2 2 2 t e / / / / ct 4 4 4 4 ea lD lo C EU SSI D T TE TT TI I IL I ID BE BC BT BR BN BS BF BE AO AU AO AI RB RM RS RT 1( !llll

R e / t 51122912391236122411218122 h t a ////////////////////////// D 11112222333334444555566666 e g h n t i oud 5 t d 1 N ed O s I nri T or A pup T s S ec ro 55555 6555564577666777 rh n )))22222))2222222222222222 ocf ccc00000.(dd0000000000000000 ti i M ((( ( ch ew .t eeev vd rr i u t ot 77777 8 988887889988899 at a x )))22222))2 22222222222 2222 r r a cc c 0 0 0 0 0. (d d 0 u.0000000000 0000 eeeo ( ( pup M (( od mt n e i et o E C u N rl grr A eane R 5 d vidd 7 S / 96 63 6 30 07 8 29 r d G 52 122 12321 236322411 1 522 ohl o N /1 ///9///1////1///1/5/ 81// cgi cc I 1/112/223/3 334/445/526 //66 D 1 2 3 4 5 / 66 eiuee A d RHbRR E o R i / 307 074 3 741 418 296 63 r 16 122311241 12371225112 2912 )) G e ////////////////////////// ab N P 11 111222233 33344445555 6666 ((

1. I R

2OT) 1.I R VNH IO/ MR E M LN( g BO n AI i 11 001102011 11111224222 2355 TT d 33 333333333 33333333333 3333 A a 00 000000000 00000000000 0000 I e D R A R A M S M G A N G I D A 5 E 7 R e. /2 96 63 6 30 307 185 529 t 51 122912391 23612241121 8122 a ////////////////////////// D 11 112222333 33444455556 6666 A 1 NO I TAT S n. 0 000900090119112002222233

3) 333233323332333333333333 0.(a000000000000000000000000 i

M )b( 1 222112233363344544454666 x.

3) 333333333333333333335333

0. (a 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 a

M EGN AR 57 96 63 630 07 85 29 /2122 123 123632241121 522 51///9///9////1///1///81// //112/223/3334/445/556//66 11 2 3 4 5 66 d o i 307 074 0741 418 296 63 r 16122311241123712251122912 e ////////////////////////// P 11111222233333444455556666

1 1 FIGURE IV.1.1 4 GROSS BETA RADI0 ACTIVITY IN AIR PARTICULATE SAMPLES -l FOR GROUP I - STATIONS 1A, 1B & 2 I AND GROUP III STATIONS 12A & 12D } ] i 1 -1

t. o '

n i .NO u Q-u z O w< cc --- q z 3 w y-- v \\ ~ O U 0.1 ---h l l l MAXIMUM WEEKLY VALUE O MONTHLY MEAN VALUE MINIMUM WEEKLY VALUE -O-- GROUP I -O-GROUP III MEAN VALUE - GROUP'I MEAN VALUE - GROUP III-l opi l l I I 3roup I 12/29 2/2 3/2 3/30 4/26 6/1 6/29 Droup III _1/3 - 1/31' 2/28 3/27 4/25 5/30 6/27 R@F5 MW{bG 9808@@ -

FIGURE IV.1.2 GROSS BETA RADI0ACTIVlTY IN AIR PARTICULATE SAMPLES FOR GROUP II - STATIONS 3A, 4A, 4B, 5, 6B,14, i 15, 17, 31, 32, 33A & 38 and GROUP III - -l STATIONS 12A and 12D q 1.0 n M 2 .h U Q. v Z O H< W / \\ g = _..- /./_ _ _ _ w g i Z EP' O 0.1 U i i l MAXIMUM WEEKLY VALUE O MONTHLY MEAN VALUE MINIMUM WEEKLY VALUE GROUP II --D - GROUP III MEAN VALUE - GROUP II MEAN VALUE - GROUP III-l LESS THAN VALUE ooI c + Group II 12/29 2/2 3/2 3/30 4/26 '6/1 6/29, Group III 1/3 1/31 2/28 3/27 4/25 5/30 6/27 1975 SAMPLE PERIOD

w e..s r w. I N 4. p O ad 4 i Fe ) 4 4 4 4 De U W = W W e a. A D m 3 W eJ e4 W p3 D4W4 0 he 4 W>PP .J W i J 4 sJ 4 e W u >M4e p eJ P W 6. ,J 13 I EW W m as O 4WMM 4 e .J s WW4W WO W N. '1 K3MP KM N N E A 4 g ME re a 10 K e4 4 WM N >> d HHpM be M m M H b.. MNER MM m 2 C4mN 04, W w 6 / p 0.m KE4E Em W g i C--- W A.E ]

1. k o '-

04* 4 o u s l -.._m ~ I 'N l I Q ,,\\) m j .h p lL ,j. 4 et lCE

=2 f

A es S. l

l 4.

De 4 in l g m q 4m. +, 2' l" w. m. O4 g s E N De d ,.s D be i MN p. a N O g o sm. g A h 4

d. M e

b* N M H G >* De M y u. U p a4 b >s o D "'Y w ~ gn 4OM OM4 w -um ,o a 4Wa v n Km mom m ii W O De 4 g i ~ 90 e 4 ~.

s. m WW m;

w a.J +, ,g i I =4 i om 4, e O o' H i - - -. - ~.., _. .() m = I * ) i. "m 9 I! a 80 a .o d o J .d Wx. 4 >n A~ 0 J_ ' r- ~ >, ~a %A w, A I. : o4 i 4 ax lI l lll l l l l l lll l l l l l O q d O' (tN/!3 ) g o:11VWIN 3 3N O 3 d

P U Og Rg AT C A D E L A A P C E S E E U U S H EL L EH P UAEA UP A LVUV L R A L A. E C VTAY VA U LVL P L W NK K N A O AENE A. V L EEAE EC E MVEW MR N B M U A TM M YB H M LULU LS T U HMAM HI M TI UI TR S I NXNN NR S N OANI OA E I 5 MMAM MH L M [ 7 t 9 1 yn ~ o gv reg om t e ar ru os tl b a L ^ 4 7 ae LM 9 1 ( 4 ]U T, E 3 A8 7 r" L4 9 U U 8 1 1 C ,3 _1 _T IA _T." f T4d R n _] A ,a PA 3A 1 R 3 _~ 4 IS3 2 d _I' AN 7 V ._ m*' p e O ,A 9 d 6 NI2P 1 n IT3 _Y' I ur 1 - 1 A i oe _1" YT ,G \\ l a r R g _1v V TS1R e e ___._.3 I I 3U e t t Y VI B nn E II ,S 1 A eI R T 7I 7 P m U CP1R _7. 9 E et G AU R rs 1 I 0O ,A ,7 ue I F IR5E 1 sr DC1 _3 aa A ,D ee RR N c Mh O4A S AF1 T H d o 0 P l t m ES, 7 i .y e BEB 9 L6 _3m 1 SP F 1 fM, _7 RS OA5 C 9 l 6 f, 9 1 l 4 b 4_ lp1 p V 4 e j r+ 3 r ~ u Q

• nn T

st [) ee m 7 m -v6 9 t 1 yn 4 re om E i t e m. sr ru b a oL os { - 6 - v6 ae LM 'b 9 ^ 1 1 ^ 5 4 _ ~ - _ - p l 0' I OC _ n 2 ).uo v zo s ~z 0z0U i. lI,llll

- ~ - - - - - i e - - n~.. i M M" A D O N U ,j 4N4 4 4 b u W W D D M Of MM J M ng k A4W4 DA d>D> A N 4 A 4

• M w

> P8 4e >4 4

• 3 > el b

4 3 EM ad 35 4 o 4W2W 4 e > a y MM4M Mu M pM K3W3 EM M m 3 E D NE E Nm m g y I u

• 3D4D AM 6*

b ha* BIE4E mM x q ke H ** D M N et M M l H g OS MHRE EW M ,m, y ue ogzw og w e O - eh EE4E E si >3 E 1 W h h "* oe MW %N + 1 l u M i HA ll v P= i n 4N e t AH \\>-> >I - C e ua is. um H4 l ~. i W i On m i.-> i H i w up m 4m. 04 IC l e awm a y l ~ W) MN p6 ha - HHu .o e. ,M I L 4

• u HMN g

\\\\ f. e4 > e n M iD uu h w >HM ag i m MMM ,4 ]; y = M g pq ) W HMM b .a m o a M y D 4 Os 8 O k a ' ~> -g CD4 ,,g, w MOM he AW em a aw g WUA eg ,i W M 5, W4 f=I 6 ~ ga O ^ N 40 On e4 u i MM i b i F* l .===. yn a i Mb g L-i a, OE ud U" jl h I m i a, <4 l + c .e

• e
  • 'am. p 7 : ".

c:' ! 3 ha E g h > >e m g m J e. Os 9'$ >Q u. oa .k 31 4 wH> t e .oa e an "{

• ~~ ~ -

.. _., _.pp g g aE 1111 I I I I lill I I I I lill i l l l 0 d g-(tW/od) NOl1VBIN3DNO3 1

i i i i i I i ~~~ FIGURE IV,2.1 MONTHLY MEAN CONCENTRATION OF GROSS BETA RADIOACTIVITY IN PRECIPITATION SAMPLES MONTHLY VALUE - STATION 1A -C)- MONTHLY MEAN VALUE - STATIONS 1A & IB

---

MONTHLY VALUE - STATION 1B

- + - MONTHLY VALUE - STATION 4M l00 ..... INDIVIDUAL VALUE. HARRISBURG,PA. - EPA LESS THAN VALUE MEAN VALUE - STATIONS 1A & IB --- MEAN VALUE - STATION 4M MEAN,VALUE - II ARRTMBURG, PA - EPA m S \\ N \\ 4 U T -~ I O \\" K \\ i __ _ y o lo 7 l r i / 1 4 f -7 1 CC j" ~~R j is g Z / \\ u.1 i ---\\--s - -P- - v 2 l \\ / i { O v l g f g j e---..4 N 1 I l.O j I 3 ~~ \\ l i ) I l 0.I l Stations 1A & 4M 1/5 2/2 3/2 4/6 5/4 6/1 7/13 l ! Station IP, 1/5 2/2 3/2 4/6 4/28 6/1 7/13 1975 SAMPLE PERIOD l 4 i J

i i i i i t i FIGURE IV.2.2 MONTHLY MEAN SURFACE DENSITY OF GROSS BETA RADI0 ACTIVITY IN PRECIPITATION SAMPLES I \\ l \\ l A A \\ f~N _( _ J l g. ~l000 N -l N N 1 b.. _. n7 .ua- \\ ~ \\ p \\ / \\ / + / \\ ~ W Z W O W .u p-

• C u.

CC D m 100' A ,a' 's, o W e MONTHLY VALUE - STATION 1A --Cr-MONTELY MEAN VALUE - STATIONS 1A & 1B MONTHLY VALUE - STATION 1B - O-- MONTHLY VALUE - STATION 4M 1 l +- INDIVIDUAL VALUE. HARRISBURG,PA. . EPA h L2SS THAN VALUE-NEAN VALUE - STATIONS 1A & 1B MEAN VALUE - STATION 4M MEAN VALUE - HARRISBURG, PA - EPA 10 1 1 I I I I I I Stations 1A & 4M 1/5 2/2 3/2 4/6 5/4 6/1 7/13 Station IB 1/5 2/2 3/2 4/6 4/28-6/1 7/13 1975 SAMPLE PERIOD

~ FIGURE IV.2.3 ANNUAL MEAN CONCENTRATION OF GROSS ' BETA ~ RADIOACTIVITY IN PRECIPITATION SAMPLES MAXIMUM HONTHLY VALUE O ANNUAL MEAN VALUE MINIMUM HONTHLY VALUE -O-ST ATION 1A-1B -O-- STATION 4M II ARRISBURG, PA. PHS-EPA DATA I y LESS THAN VALUE l ( I 100 i l n R._ e t.)o. a Z o O W< K 1 l Z us VZ n o 10 U pas as i 1.0 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year

FIGURE IV.2.4 ANNUAL MEAN SURFACE DENSITY OF GROSS BETA RADI0 ACTIVITY IN PRECIPITATION SAMPLES I 1000 0 W W Z ^ wN O 2 .5 W u U Q. u. CE D W 100 -~~ - MAXIMUM MONTHLY VALUE O ANNUAL MEAN VALUE MINIMUM HONTHLY VALUE --O-- S T AT IO N 1A-1B -O-- STATION 4M S'* HARRISBURG, PA. PHS-EPA DATA y LESS THAN VALUE 10 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year

i e i i FIGURE IV.2.5. SURFACE DENSITY OF SR-90 IN PRECIPITATION SAMPLES l ~ l l -- QUARTERLY VALUE - STATION 1A -o-- QUARTERLY MEAN VALUE - STATIONS 1A & IB -- - - QUARTERLY.VALUE - STATION 1B -o-QUARIERLY VALUE - STATION 4M LESS THAN VALUE l ANNUAL MEAN VALUE - STATIONS 1A & IB --- ANNUAL MEAN VALUE - STATION 4M i 000 N .h 0 Uh } H W Z uJ o O u. p Il D m100' d )ih 5i . i \\ 1 bd i i \\ 9 \\ } Tk 10 1966.1967[1O8 1969 1970 1971 1972 1973 1974 1975 YEAR _________.__u___.-

l i FIGURE IV.2.6 SURFACE DENSITY OF Cs-137 IN PRECIPITATION SAMPLES I 1 QUARTERLY VALUE - STATION 1A 1 O QUARTERLY MEAN VALUE - STATIONS 1A & IB QUARTERLY VALUE - STAT.10N 1B f - O- - QUARTERLY VALUE - STATION 4M 1 LESS THAN VALUE I ANNUAL MEAN VALUE - STATIONS 1A & IB ANNUAL MEAN VALUE - STATION 4M i N &1000 .o (1. w l i \\ 1 l l >-w mz wa w U<u. a: O E L.P. m 100 m I . {h I ..L i l 0 6 l 10 l 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 l Yt.AR l l

I i i i l I i FIGURE IV.3.1 MONTHLY MEAN CONCENTRATION OF GROSS ALPHA RADIOACTIVITY IN SURFACE AND DISCHARGE WATER SAMPLES SOLUBLE FRACTION l l l l.0 0 NU / f G., j s / / I / Z \\ O. g [ \\ /k / s CC 0 Zw U Z l O l u o.l l + 2 r ERROR OF ANALYSIS O MONTHLY VALUE - 2 rERROR OF ANALYSIS h LESS THAN VALUE --O-STATION lQ (PB #2 INTAKE) -O-STATION 1M (PB CANAL DISCHARGE) 0,01 1/5 2/2 3/2 4/6 5/4 6/1 1975 SAMPLE DATE

i E I i l I I FIGURE IV.3.2 l MONTHLY MEAN CONCENTRATION OF GROSS ALPHA i RADIOACTIVITY IN SURFACE AND DISCHARGE WATER SAMPLES INSOLUBLE FRACTION + 2 o-ERROR OF ANALYSIS O MONTHLY VALUE - 2 c-ERROR OF ANALYSIS h LESS THAN VALUE l 0 MINIMUM BELOW GRAPH SCALE --o-- STATION lQ (PB #2 INTAKE) j --c-- STATION 1M (PB CANAL DISCHARGE) l.0 x 5 u i a. \\ v _// _. \\ \\ o, s Z / O s' H / _ o._ __.g F / CI' i s -. / Z / w U / Zo / v 0.1 p L 4 7 -~ 0,0i A 1/5 2/2 3/2 4/6 5/4 6/1 1975 SAMPLE DATE

t i i a i I i FIGURE IV.3.3 MONTHLY MEAN CONCENTRATION OF GROSS ALPHA RADI0ACIIVITY IN COMPOSITE SURFACE WATER SAMPLES - CONOWINGO DAM STATION 4L AND HOLTWOOD DAM STATION 61 - SOLUBLE FRACTION i.0 ^ 5 4\\ f\\ \\ v / o. \\ /{ / / l \\ / l , \\ / s / ~ z O F- <C CC H Z w U Z Ov

0. l.

+ 2 a-ERROR OF ANALYSIS O MONIHLY VALUE 2 o-ERROR OF ANALYSIS h LESS THAN VALUE STATION 4L (CONOWINGO DAM) -D-STATION 61 (HOLTWOOD DAM) i 1 i i I I (a) Automatic sampler at Station 61 did not operate from 2/2/75 to 2/8/75 because of a power discontinuity 0.01 i I i i i i i i i i i i 1/5 2/2(,),3/2 4/6 5/4 6/1 7/13 1975 SAMPLE PERIOD

1 I I i 6 l } g FIGURE IV.3.4 MONIEY MEAN CONCENTRATION OF GROSS ALPHA ] RADIOACTIVITY IN COMPOSITE SURFACE WATER SAMPLES - CONOWINGO DAM STATION 4L AND HOLTWOOD DAM STATION 6I - INSOLUBLE FRACTION ERROR OF ANnLYSIS + 2 o-o MONIEY VALUE i 2 r ERROR OF ANALYSIS h LESS TinN VALUE C MINIMUM BELOW CRAPH SCALE --0-- STATION 4L (CONOWINGO DAM) -O-STATION 6I (HOLTWOOD' DAM) l l C 1.0 .5 u l Q. \\ / \\ - - \\. / i z /, \\ ? O 1 \\ T \\ ]~~~ W< / / + s j z i \\ l w / f uz l \\ / ov o,l 1 ~ 1 g p p 1 ) I (a) Automatic sampler at Station 6I did not operate from 2/2/75 to 2/8/75 I because of a power discontinuity __d__ 0.01 _h L 1/5 2/2

• 3/2 4/6 5/4 6/1 7'/13 1975 SAMPLE PERIOD

6 i. i e i FIGURE IV.3.5 ANNUAL MEAN CONCENTRATION OF . GROSS ALPHA RADI0 ACTIVITY IN SURFACE WATER SAMPLES SOLUBLE FRACTION l l , l. 0 U s U Q. v Z O Z W U Z O U 0.1 ~ MAXIMUM MONTHLY VALUE C ANNUAL MEAN VALUE MINIMUM MONTHLY VALUE -O-- STATION 4F - STATION 6A LESS THAN VALUE 0.01 1966 1967 1968 1969 1970 1971 1972 1973. 1974 1975 Year

i l i i i e a FIGURE IV.3.6 ANNUAL MEAN CONCENTRATION OF GROSS ALPHA RADI0 ACTIVITY IN SURFACE WATER SAMPLES INSOLUBLE FRACTION 1 j q l l0 ~ i. 5 { l l l ^ 5 U O I j O_ l v l 1.0 z O O H <C \\ F-Z uJ ) U Z O U 0.1 ~b~5 ' MAXIMUM' MONTHLY VALUE o ANNUAL MEAN VALUE MINIMUM MONTHLY VALUE ~"~ -o-STATION 4F -- STATION 6A LESS THAN VALUE 0.01 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year

1 l l 1 1 I i i i I l FIGURE IV.3.7 MONTHLY MEAN CONCENTRATION OF GROSS BETA ) RADIOACTIVITY Ib SURFACE AND DISCHARGE 1 l WATER SAMPLES SOLUBLE FRACTION + 2 e-ERROR OF ANALYSIS o MONTHLY VALUE l - 2 a-ERROR OF ANALYSIS h LESS THAN VALUE - + STATION IF (FB #1 INTAKE) 1 - -O- - STATION 1R (FB #1 DISCHARGE) l O l0 l h i I u h-1 l l j l z I O / \\ / \\ Cf 7 l W uz Ou l.0 i 1 l l I 1 I 1 0.l ~ l 1/5 2/2 3/2 4/6 S/4 6/1 l 1975 SAMPLE DATE

i I i i l i l l FIGURE IV.3.8 l MONTHLY MEAN CONCENTRATION OF GROSS BETA RADIOACTIVITY IN SURFACE AND DISCHARGE ] WATER SAMPLES INSOLUBLE FRACTION l + 2 rERROR OF ANALYSIS o MONTHLY VALUE - 2 rERROR OF ANALYSIS h LESS THAN VALUE j ---o--. STATION 1P (PB #1 INIAKE) -G-STATION 1R (PB #1 DISCHARGE) ] 10 =5 U Q. w l Z O ~ F-ct A = +z ~ U Z 'l N o / \\ Sy v.

l. o

/e 1 t / g \\ ~ / A / \\ s O.I 1/5 2/2 3/2 4/6 5/4 6/1 1975 SAMPLE DATE

I l I l-1 I I FIGURE IV.3.9 MONIHLY MEAN CONCENTRATION OF GROSS BETA I RADIOACTIVITY IN SURFACE AND DISCHARGE WATER SAMPLES SOLUBLE FRACTION j l + 2 rERROR OF A1ALYSIS O MONTHLY VALUE - 2 r ERROR OF ANALYSIS h LESS THAN VALUE MINIMUM BELOW GRAPH SCALE I -O-STATION IQ (PB #2 INTAKE) -O-STATION IM (PB CANAL DISCHARGE) 10 C 5u Q. v p / / O / e i / 1 h -g-- = w Uaou I, o i I o.1 1 f 1/5 2/2 3/2 4/6 5/4 6/1 1975 SAMPLE DATE

l l l l I 1 i 1 i i i I i i FIGURE IV.3.10 MONTHLY MEAN CONCENTRATION OF GROSS BETA RADI0 ACTIVITY IN SURFACE AND DISCHARGE WATER SAMPLES INSOLUBLE FRACTION i p_ _.g _. s / N ~~ -~ 4 1,0 // r l C / \\ h / v / \\ a. j v ~ Z O H <C H Z tu v. Z Ov 0.1 + 2 o-ERROR OF ANALYSIS o MONTHLY VALUE - 2 cr-ERROR OF ANALYSIS h LESS THAN VALUE f. MINIMUM BELOW GRAPH SCALE -c-STATION 1Q (PB #2 INTAKE) -o - STATION IM (PB CANAL DISCHARGE) 0.01 k l 1/5' 2/2 3/2' 4/6 5/4 6/1 1975 SAMPLE DATE i 3

i 1 i i e i I FIGURE IV.3.11 MONTHLY MEAN CONCENTRATION OF GROSS BETA RADIOACTIVITY IN SU't& ACE WATER SAMFLES SOLUBLE FRACTION I I l + 2 cr-ERROR OF ANALYSIS l o MONTELY VALUE - 2 cr-ERROR OF ANALYSIS h LESS THAN VALUE --c-STATION 4F (CONOWINGO DAM) -O-STATION 6A (HOLTWOOD DAM) 10' C h I vo. v 1 l l 8 z / \\ O l \\ F W / H - T~ ~ 9 zw Uz Ou l.0 0.l 1/5 2/2 3/2 4/6 5/4 6/1 1975 SAMPLE DATE

i i i I i i l i FIGURE IV.3.12 ) l MONTHLY LEAN CONCENTRATION OF GROSS BETA i RADI0 ACTIVITY IN SURFACE WATER SAMPLES I INSOLUBLE FRACTION l j + 2 a-ERROR OF ANALYSIS o MONTHLY VALUE - 2 a-ERROR OF ANALYSIS h LESS THAN VALUE -o-STATION 4F (CON 0WINGO DAM) -O-STATION 6A (HOLTWOOD DAM) l _ 31 0 U Q. ~~ l Z O ~~ <C W Z / \\ j

== / -- \\ ,K Z / S b O / \\ [ \\ U i.0 s___c / / f l l

0. l.

'1/ 5 2/2 3[2 '4/6' 5/4 6/1 I 1975 SAMPLE DATE l 2

i i ,i e a i i FIGURE IV.3.13 MONIHLY MEAN CONCENTRATION OF GROSS BETA RADI0ACIIVITY IN COMPOSITE SURFACE WATER SAMPLES - CONOWINGO DAM STATION 4L AND HOLTWOOD DAM STATION 6I - SOLUBLE FRACTION + 2 cr ERROR OF ANA YSIS o MONTHLY VALUE 2 o-ERROR OF ANALYSIS h LESS THAN VALUE D MINIMUM BELOW GRAPH SCALE - O-- STATION 4L (CON 0WINGO DAM) -O-STATION 61 (HOLTWOOD DAM) 2._ 10 i V 0. v i c z O \\ / A H / / g x g / / / s Z 6 4 i W l U j Z O u 1.O (a) Automatic sampler at Station 61 did not operate from 2/2/75 to 2/8/75 because of a power discontinuity 0.1 -_d_. 1/5 2/2 (a)3/2 4/6 5/4 6/1 7/13 1975 SAMPLE PERIOD

l l I I I I I l FIGURE IV.3.14 MONTHLY MEAN CONCENTRATION OF GROSS BETA RADIOACTIVITY IN COMPOSITE SURFACE WATER SAMPLES - CONOWINGO DAM STATION 4L AND HOLTWOOD DAM STATION 6I - INSOLUBLE FRACTION i +2 a-ERROR OF ANALYSIS o MONTHLY VALUE 2 o-ERROR OF ANALYSIS I O LESS THAN VALUE I I + MINIMUM BELOW GRAPH SCALE -- 0-- STATION 4L (CONOWINGO DAM) -C-STATION 6I (HOLTWOOD DAM) i ) O IO 1 N_ U CL v i w< l d l l H l Z i W l U Z l Ov l.0 \\ / P A / __ _a / / (a) Automatic sampler at Station 61 did not operate from 2/2/75 to 2/8/75 because of a power discontinuity 0.1 k. 1/5 2/ 2'( t) 3/ 2 4/6 5/4 6/1 7/13 1975 SAMPLE PERIOD

m ~ l I I I I FIGURE IV.3.15 ANNUAL MEAN CONCENTRATION OF GROSS BETA RADIOACTIVITY IN SURFACE WATER SAMPLES' FOLUBLE FRACTION ~"~~ i i ) MAXIMUM MONTHLY VALUE O ANNUAL MEAN VALUE MINIMUM MONTHLY VALUE A BELOW GRAPH SCALE --o-STATION 6A -O-STATION.4F "O-STATION 13A l d**% I l ~ U l L a I i Z l0 u O ~ H ~~ 2: W Z uJ u i Z O U OO ~ o i l,0

• ohs.1 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 j

l YEAR l

l l I l 4 0 I l FIGURE IV.3.16 l ANNUAL MEAN CONCENTRATION OF l GROSS BETA RADIOACTIVITY IN SURFACE WATER SAMPLES INSOLUBLE FRACTION MAXIMUM MONTHLY VALUE c ANNUAL MEA.i VALUE MINIMUM MONTHLY VALUE --E BELOR GRAFR SCAII --o-- STATION 6A - o-- STATION 4F -O-STATIch 13A l0 .5 u g, v z O cC CC e-00 Z uJ U O Z o 1. 0 U y' .===.- 0.1 u f..._ 1966 1967 1968 1969 1970 1971,- 1972 1973 1974 1975 Year

e l I ( l 1 i i l FIGURE IV.4.1 QUARTERLY MEAN CONCENTRATION OF GROSS BETA RADIOACTIVITY IN WELL WATER SAMPLES TOTAL SAMPLE f - MAXIMUM INDIVIDUAL VALUE - QUARTERLY MEAN VALUE STATIONS 1U & IV MINIMUM INDIVIDUAL VALUE I MAXIMUM INDIVIDUAL VALUE -O-QUARTERLY MEAN VALUE STATIONS 7 & 8 100 MINIMUM INDIVIDUAL VALUE f -O-STATION 28 ANNUAL MEAN VALUE - STATIONS 1U and IV i --- ANNUAL MEAN VALUE - STATION 28 .i

---

ANNUAL MEAN VALUE - STAfIONS 7& 8 i

h LESS THAN VALUE I e l 5 3 u O. ] s v 1 l ? Z O s < l0 a-H Z O l w i Vz i c O l v 'A W WW . >e a., y J &v vv V l.0 ~" c 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 l Year I v a-__________

l i 1 i i i i FIGURE IV.5.1 ~~~~ QUARTEELY MEAN GROSS ALPHA-CONCENTRATION IN SOIL SAMPLES + 2 STANDARD DEVIATIONS OF DATA o QUARTERLY MEAN VALUE - 2 STANDARD DEVIATIONS OF DATA --o-STATION-1 AA - O - STATIONS 3 A s

• N, 5 & 6C ANNUAL MEAN VALUE'- STATION 1AA

~~~~ ANNUAL MEAN VALUE-STATIONS 3A, 4N, 5& 60 b MINIMUM BELOW GRAPH SCALE 10 n >-a' o 4 Q o l U l l a. j z g O 5 l ,0 2 I Vf"' li W l l U l Z I l { l 1.0 j u l I 1 r U ~~~ l I A 4-A o.1 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 f Year

i e i. I s I FIGURE IV.S.2 QUARTERLY NET BETA CONCENTRATION IN SOIL SAMPLES i

u. -

l 10 0-E j a k 9 -\\... Q I O I ,I Z 0 W t l s 1. 0 i z l w Ov - + 2 STANDARD DEVIATIONS OF DATA o QUARTERLY MEAN VALUE - - 2 STANDARD DEVIATIONS OF DATA --o-S T ATIO N 1 A A - O - STATIONS 3 A, 4N, 5& 60 ANNUAL MEAN VALUE - STATION 1AA

---

ANNU AL MEAN VALUE-STATIONS 3A, 4N, 5& 60 b

MINIMUM BELOW GRAPH SCALE t 0.1 I l 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year r

---

_--,--,----_c

] ~~ SEMI-ANNUAL MEAN SR-90 CONCENTRATION IN SOIL SAMPLES + 2 STANDARD DEVIATIONS OF DATA ~~ o SEMI-ANNUAL MEAN VALUE - 2 STANDARD DEVIATIONS OF DATA -o-STATION-1AA - {} - STATIONS 3A, 4N, 5& 60 ANNUAL MEAN VALUE - STATION 1AA ANNUAL MEAN VALUE-STATIONS 3A, 4N, 5& 60 b MINIMUM BELOW GRAPH SCALE m>- 1.0 1 ~ c ) e N ) U a v \\ O O - 7.. O 4 d l 1 x l H z tu ) Vz i O I U O.1 q ,I ~~~ N m B. ION.. 1 l l l 1 m l l 1 I a,oi j 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 l Year l

-t - c-~~~~~~~~ ~ FIGURE IV.5.4 ~~ SEMI-ANNUAL MEAN SR-89 CONCENTRATION l IN SOIL SAMPLES .m + 2 STANDARD DEVIATIONS OF DATA ~~ o SEMI-ANNUAL MEAN VALUE - 2 STANDARD DEVIATIONS OF DATA --o-- S T AT IO N 1 A A - O - STATIONS 3A, 4N, 5& 60 ANNUAL MEAN VALUE - STATION 1AA ANNUAL MEAN VALUE-STATIONS 3A, 4N, S& 6C __ MINIMUM BELOW GRAPH SCALE C 1.o l 0 7 m v l z l O F-t d F-z tu v I z O I v ol 1 l.y, g ~ b meemmes >dminuuuum QOl -~ 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year

l i i i i i l ~} ~' FICURE IV.5.5 l SEMI-ANNUAL MEAN CS-137 CONCENTRATION 1 IN SOIL SAMPLES i + 2" STANDARD DEVIATIONS OF DATA o SEMI-ANNUAL MEAN VALUE - 2 STANDARD DEVIATIONS OF DATA -o--- S T AT I O N 1 A A - O - STATIONS 3 A, 4N, 5& 60 ANNUAL MEAN VALUE - STATION 1AA ..,- ANNUAL MEAN VALU E - f STATIONS 3A, 4N, 5& 60 l f MINIMUM BELOW GRAPE SCALE v 10 9 CC R e n a It l o. \\ --4 b 1 i\\ I l z i; 1 1 I ~ p Io I} ~ ccr 1. 0 I z l l / uJ u I l Z o l l u f 6 I b '**8"uS8 i 0.1 j $. 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year 1

l 1: l l l l 1 FIGURE IV.6.1 ~ GROSS BETA' RADIOACTIVITY ~~~ ' CONCENTRATION IN SILT SAMPLES. A 6.. e 10 p \\ x . 'i Q 1 Q . o s,.. ---a \\. \\ Q -{O b.1. - Q i i m f*J \\ "I ? l n N s t-s' z g o o .b...,3 b, s \\ ', :.:.: l 1 i s \\ l il ff,d, M ---\\...... -z g i Ld \\ i u A, ' z g o 1.0 iJ L v s_y .\\I --f + 2 o-ERROR OF ANALYSIS l o QUAIGERLY VALUE - 2 e-ERROR OF ANALYSIS i MINIMUM BELOW GRAPH SCALE - STATION 4T 0-- STATION 4C . O STATION 4D - ANNUAL MEAN VALUE - STATION 4T -- - ANNUAL MEAN VALUE - STATION 4C --- - ANNUAL MEAN VALUE - STATION 4D A o.t 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year

l l l l 1 l FIGURE IV.6.2 SR-90 1ADI0 ACTIVITY CONCENTRATION IN SILT SAMPLES + 2 r ERROR OF ANALYSIS O QUARTERLY VALUE - 2 r ERROR OF ANALYSIS k. MINIMUM BELOW CRAPH SCALE --O-STATION 4T -O - STATION 4C - O STATION 4D ANNUAL MEAN VALUE - STATION 4T .) - -.. ANNUAL MEAN VALUE - STATION 4C -..-- ANNUAL MEAN VALUE - STATION 4D 1 >- I. O 1 cc Q R I a l a. v O... z o b b M H p Z Ki I\\' ~h' \\- 6.. o v O.1 I -3 k O \\ \\ '.

f. #

j s. \\', _;y- \\'. ;gti 2 .t,/ .{ 3276 \\ 1.,gg jbu .I .f. GOI ^ 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year

i e i i e i ~~ FIGURE 17.6.3 CS-137 RADI0 ACTIVITY CONCENTRATION IN SILT SAMPLES + 2 o-ERROR OF ANALYSIS O QUARTERLY VALUE A - 2 r ERROR OF ANALYSIS -O-- STl6 TION 4T -O - STATION 4C - - O STATION 4D ANNUAL MEAN VALUE - STATION.4T- --- ANNUAL' MEAN VALUE - ST ATION 4C F - --- ANNUAL MEAN VALUE - STATION 4D I I p I.O cr Q O g N y 7T Q. _ _]- F" l' Z -bz\\Q.-etEQ4,,- l, O \\ .].... I Q.p.., l1 w 1 g x s g l Z b I W ,l al;l t-U t, z g ,e f.

7. s u o,l p

,l' o '~2 "i -f- .s, D i

. /

i r ..s l' I ,s ) 0,01 1966 1967 1968' 1969 1970 1971 1972 1973.1974 1975 Year

i FIGURE IV.6.4 lSEMI-ANNUAL GROSS BETA RADI0 ACTIVITY CONCENTRATION IN SILT SAMPLES I ~ l i 1 j I i0 k li Q \\ -? l l y. P a ~~~ I \\... - - \\ p cc-g \\\\A \\ =a-g .. L. j ~ \\ t z .l l .m .f_ \\ o \\ ]I \\ l W p d il s 1. 0 'i/ 1/ 9 z m U z O V '~ i .. + 2 o-ERROR OF ANALYSIS O SEMI-ANNUAL VALUE 2 o-ERROR OF ANALYSIS -o-- STATION 6F - o-- STATION 1BB ~~~ ANNUAL MEAN - STATION 6F - - - ANNUAL MEAN - STATION 1BB d_ MINIMUM BELOR GRAPH SCALE I 1 1 E 0.1- \\ 1963 1967 1968 1969 1970 1971 1972 1973 1974 ' 197.5 Year i,c. S

i l J i i e i FIGURE IV.6.5 1 SR-90 KAD10 ACTIVITY CONCENTRATION 'I IN SILT SAMPLES ] i i + 2 o-ERROR OF ANALYSIS O INDIV10UAL VALUE 3 - 2 r IRROR OF ANALYSIS - .3t. MINIMUM BELOW GRAPR SCALE --O-S T AT IO N 6 F - O-STATION 1BB ANNUAL MEAN VALUE - STATION 6F .... ANNUAL MEAN VALUE - STATION 1BB p I.O l T O l II i g N U Q. Z O d H Z w u 7 o vO1 \\ b-S, /\\ \\ i ] \\ 8 / \\ / \\ l T k / "i \\ P g / --8-- s / \\ / \\l \\ P ~ h ~ 8 ~~ '~ .e v l l s j \\g g... 0,0I Y1 1966 1967 1968 1969 1970 1971 1972 1973 1974 1 l'97 5 Year

l a i s a i FIGURE IV.6.6 SEMI-ANNUAL CS-137 RADIOACTIVITY CONCENTRATION IN SILT SAMPLES i I i l + 2 rERROR OF ANALYSIS l 0 SEMI. ANNUAL VALUE - 2 o-ERROR OF ANALYSIS MINIMUM BELOW GRAPli SCALE - o-- STATION 6F 1.0 -o-STATION 1BB ANNUAL MEAN VALUE - STATION 6F ANNUAL MEAN VALUE - STATION 1BB j i O L C' O i l C k N U 1 o. 1 1 v z ~,5 h i o t i-n ~ CC l - 0.1 - SE&'~ -o z g-yg W _M v I z o N I a y... f Y...\\L. 'y.. \\, \\ t-y; D 'd N l l 0.0l 1966 1967 1968 1969 1970 1971 1972 1973 1974,1975' Year 1

4 i e d I i h I i FIGURE IV.7.1 QUARTERLY MEAN CONCENTRATION OF NET BETA RADI0 ACTIVITY IN FISH SAMFLES 1 4 ...m.. m i t/)< 9~ ll o N I i O b b I \\ ~ l

\\

i l 1 1 gg 3-i

• L-lo 6%W j

y r 5 Z O N I cf l z LAJ V Z O U l b l MA11 MUM INDIVIDUAL VALUE O QUARTERLY MEAN VALUE MINIMUM INDIVIDUAL VALUE T LESS TRAN VALUE --o-ST ATIONS 25 A, 258, 25C 25D (PEQUEA CREEK)

• Q
• STATIONS 30A, 305, 30C (PETERS CREEK)

ANNUAL MEAN VALUE - STAT 10NS 25A, 233, 25C. 250 (PEQUEA CREEK) = = = ANNUAL MEAN VALUE - STATIONS 30A, 308, 30C (PETERS' CREEK) I 1.0 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 l Year ---__a

6 i i l l l l FIGURE IV.7.2 QUARTERLY MEAN CONCENTRATION OF SR-90 RADIOACTIVITY IN FISU SAMPLES l 1 i 1 1vs l h ( o g 1 V CL w l 2 0 g _ _\\_ (f b z \\ E \\ l Ls1 U \\D f i 2 1 I l o 1. 0 1 --o-ST AT I ON S 25A, 258, 25C, 25D (FEQUEA CREEK) -O - STATIONS 30A, 30s, 30C (PETERS CREEK) ANNUAL MEAN VALUE = STATIONS 25A, 258, 25c, 25D (FEQUEA CREEK) = = = ANNUAL MEAN V ALUE = STATIONS 30A, 308, 30C (PETERS CREEK) I I 0.1 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year

i l i i a FIGURE IV.7.3 QUARTERLY MEAN CONCENTRATION OF Cs-137 RADI0 ACTIVITY IN FISH SAMPLES i l 1 --o-- S T ATIoW 5 2 5 A, 2SB, 25C, 25D (PEQUEA CREEK) - O

• STATIONS 30A, 303, 30C (PETERS CREEK)

ANNUAL MEAN TALUE - STATIONS 25A, 255, 25C, 25D (PEQUEA CREEK) = -- ANNU AL MEAN T ALUE - STATIONS 30A, 305, 30C (PETER 5' CREEK) 2, f. o v< O N ll t u I n. _ _I _ L. l t O I b OO 1 t H I <C I tr H Z uJ U Z O v 0.1 1 j \\ l l IL 0.01 i 1966 1967 1968 1969 1970 1971 1972 1973 1974 19'f 5 l Year

100 FIGURE IV.7.4 QUARTERLY MEAN CONCENTRATION OF NET BETA RADIOACTIVITY IN FISH SAMPLES t j -l "I-i tn< .3 U 4 n. ~ -W I 10 N_ z O (f w Z us u Z O U MAXIMUM INDIVIDUAL VALUE O QUARTERLY MEAN VALUE MINIMUM INDIVIDUAL VALUE T tass THAN VALUE + STATIONS lY, IEE & 4J - O " STATIONS 6C,6B l ANNUAL MEAN VALUE-STATIONS 1Y, IEE & 4J ANNUAL MEAN VALUE - STATION 6C, 6H t l

1. 0 1966.1967 1968 1969 1970 1971 1972 1973 1974 1975 Year

l i i I i I i i I FIGURE IV.7.5 QUARTERLY MEAN CONCENTRATION OF 3 SR-90 RADI0 ACTIVITY IN FISH SAMPLES ) MAXIMUM INDIVIDUAL VALUE o QUARTERLY MEAN VALUE MINIMUM INKIVIDUAL VALUE MINIMUM BT. LOW GRAPH SCALE --o-- STATIONS 1Y, IEE & 4J --o-- STATIONS 6C,6H ANNUAL MEAN VALUE - STATIONS lY, IEE & 4J ANNUAL MEAN VALUE - STATION 6C, 6H t Im l0 r i 0 .5 v (1. [ I w l i 1 1 O ~ W< a: l wz i as 0 v -,-i z I*O O o a \\ \\ 1 l l ~ 1 1 \\ &it i o.t 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year

l ( l i I I J FIGURE IV.7.6 QUARTERLY MEAN CONCENTRATION OF Cs-137 RADIOACTIVITY IN FISH SAMPLES _~ 1.0 n I m< O h h i u < _a i .0t. l t / / d l Z i O F-< Ct: F-z ol w U Z O l v l l + 2 STANDARD DEVIATIONS OF DATA O QUARTERLY MEAN VALUE - 2 STANDARD DEVIATIONS OF DATA i - STATIONS lY, IEE & 4J l -o-- STATIONS 6C,6H LESS THAN VALUE h MINIMUM BELOW GRAPH SCALE ANNUAL MEAN VALUE STATIONS lY, IEE 6 4J ANNUAL MEAN VALUE - STATION 6C, 6H AAA E I o.o l 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year i i

4 i a e i FIGURE IV.8.1 ANNUAL MEAN CONCENTRATION OF NET BETA RADIOACTIVITY ~~ IN SHELLFISH TISSUE SAMPLES O i I lo I w< 0 h h Un V l Z O l l cc Z l w U Z o 1. 0 U l l l l MAXIMUM INDIVIDUAL VALUE O ANNUAL MEAN VALUE MINIMUM INDIVIDUAL VALUE ,F LESS THAN VALUE - O -- STATIONS 9,10 & 11 l l 0.l l 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1 Year

1 l l l l FIGURE IV.9.1 ANNUAL MEAN CONCENTRATION OF NET BETA RADIOACTIVITY ~ IN VEGETATION SAMPLES l t 100 "E j to o I LD .5 't o l 1 Z O .H< 10 cc H Z to V Z Ou MAXIMUM INDIVIDUAL VALUE O ANNUAL MEAN VALUE MINIMUM INDIVIDUAL VALUE --O-S T AT I O N 1 - O-- STATIONS 3A, 4N. 5& 6D d _ MINIMUM BELOW GRAPH SCALE L h-I.o 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year

1 i i l i I I I FIGURE IV.9.2 ANNUAL MEAN CONCENTRATION OF SR-90 RADIOACTIVITY IN VEGETATION SAMPLES i n <n l 0 I l ~ O N G O a. J l ~ Z O O H< Cf. Z to V Z o I. O u l t I '~ MAXIMUM INDIVIDUAL VALUE O ANNUAL MEAN VALUE MINIMUM INDIVIDUAL VALUE T LESS THAN VALUE -O-STATION 1 _ )_ _ -O-STATIONS 3 A, 4N, 5& 6D 0.1 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year l

i i i i i i i i i FIGURE IV.9.3 ANNUAL MEAN CONCENTRATION OF CS-137 RADI0 ACTIVITY IN VEGETATION SAMPLES \\ d 1 I l ~ I l0 W i O .5 U O Z O ~~~- F-i <a' Z L1J V O z o 1. 0 v O MAXIMUM INDIVIDUAL VALUE O ANNUAL MEAN VALUE - MIN 1 HUM INDIVIDUAL VALUE --O-- S TAT IO N 1 -O-STATIONS 3A, 4N, 5& 6D 0.l I I I I I 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 Year

i FIGURE IV.10,1 MEAN CONCENTRATION OF SR-90 RADIOACTIVITY IN MILK SAMPLES + 2 STANDARD DEVI ATIONS OF DATA ~ O QUARTERLY MEAN TALUE - 2 STANDARD DEVIATIONS OF DATA i .k. MINIMUM BELOW CEAFE SCALE I -O-NEARBY FARMS (s) l -O= INTERMEDIATE DISTANCE FARMS (b) a 4

• DISTANT FARMS (c)

ANNUAL MEAN VALUE NEARRY FARMS

=== ANNUAL MEAN VALUE INTERMEDIATE DISTANCE FARMS

===== ANNUAL MEAN VALUE DISTANT FARM 5 I00 l i m .N l U 1 v 9 = i 7 s ~~ O e ^ ~. _ g I 1o tc r t-e. g 5 '9~~ w li l o V i [ c7. 8O 1 O e U 9 s'o \\ (a) Farms F C, B and J (1st sad 2nd Quarters 1974) ~ l Farms C, 8 and J (All later periods) (b) Farme E. L, M, and N (1974) Farms D, K. L, M, and W (All later periods) (c) Forma A, 5, C and D (1974) ~ Farms A, B and C (All later periode) 9 99. IR$hd I i.o 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 YEAR

1 1 I I l i l l l ^ FICURE IV.10.2 MEAN CONCENTRATION 0F CS-137 RADI0 ACTIVITY IN MILK SAMPLES - + 2 STANDARD DEVIATIONS OF DATA O QUARTERLT MEAN VALUE - 2 STANDARD DEVI ATIONS OF D ATA 1 MINIMUM BELOW CRAFB SCALE -O-NEARST FARMS (a) -{}- INTERMEDIATE DISTANCE FARMS (b) -] 1 -4. DISTANT F ARMS (c) ~ ANNU AL MEAN VALUE NEARST F AEMS --- ANNU AL MEAN VAIUE INTERMEDI ATE DISTAisCE FARMS ---. ANNUAL MEAN VALUE DISTANT FARMS _ ~, - 1 = .m r i 10 m y. o u I Q.,

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t ~~U ~ z O CC g Z. La V Z o 1. 0 v ~. (a) Faroe F G, E and J (1st and 2nd Quartere 1974) Faroe C E and J (All later perleds) (b) Farme E, L. H, and N (1974) Farew D E, L. M, and N (All 'ister periode) (c) 7 arms A, 3, C and D (1974) Fares A, 3 and C (All later periods) EE 0.1 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 YEAR

1 1 I 3 I I l l FICURE IV.10.3 MEAN CONCENTRATION 0F I-131 RADI0 ACTIVITY IN MILK SAMPLES 1 10 __y 1 4 j a l O + 2 e ERROR OF ANALYSIS N O QUARTERLT MEAN VALUE 2 r stROR OF ANALYSIS U MINIMUN BELOW CRAFE SCALE (1. LESS TRAN VALUE NEARBY FARMS (a) C). INTERMEDIATE DISTANCE FARMS (b) ..&- DISTANT FARNS (c) 1.0 '"""'t "*A" ""^**' ' a"'

== = ANNUAL MEAN VALUE INTE5 MEDIATE DISTANCE FARMS - -** ANNUAL NBAN VALUE DISTANT FARMS Z ~ ~- SINGLE MEASUREMENT REFORTING LEVEL Q =*=* QUARTEktf AVERACE REFORTINC LEVEL gg 2: LAJ U O / U \\ r,\\ f. '".M u ', %(Vh. O.I ) 1 7 (a) Ferr,s F, G, E and J (1st and '2nd Quarters, 1974) Parar C. E and J (3rd and och Quetters 1974) Fares C eni J (April 1975) Faroe C, 5, and J (Mar 1975) _ (b) !'arma K, L, H, ant! If (1974) j Forma B, E, L, H, and N (May 1975) (c) Farma A. B, C, and D (1974) Farma A and C (April 1975) Farma A, 3, and C (May 1975) I I I I I I l L 1 0.0l 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 YEAR i .1

I I l l I I FICURE IV.11.1 l SEMI ANNUAL MEAN CONCENTRATION ~ OF NET BETA RADI0 ACTIVITY IN RABBIT MUSCLE SAMPLES 1 I loc l n I b W y o ~ .h U l O b l Z O H< lo T Z uJ U Z Ov MAXIMUM INDIVIDUAL VALUE O MEAN VALUE MINIMUM INDIVIDUAL VALUE T LESS THAN VALUE I / --O-S T AT IO N 1 ANNUAL MEAN VALUE - STATION 1 1.0 1966 1967 1968 1969 1970 1971 1972 1973 1974 ' 1975' Year

1 l l I 7 r i i i i i FIGURE IV.11.2 SEMI ANNUAL MEAN CONCENTRATION ~~ f OF SR-90 RADI0 ACTIVITY IN RABBIT BONE SAMPLES l [ J l l t t I ? e Itn l 0 0 .5 l Y 1 l ( j i j \\1 Z O H 4 1 ) l-- Z w U l o I. O l U i ) i ~ \\ I l MAXIMUM INDIVIDUAL VALUE l O MEAN VALUF MINIMUM INDIVIDUAL 7ALUE 1 MINIMUM BELOW CRAPH SCALE --O-ST ATION 1 ANNUAL MEAN VALUE - STATION I 0.1 i 1966 1967 1968 1969 1970 1971 1972 1973 1976 1975 Year j l}}