Text

1991 Annual Radiological Environ Monitoring Rept
	ML20095C219
Person / Time
Site:	Clinton
Issue date:	12/31/1991
From:	Spangenberg F; ILLINOIS POWER CO.
To:	; NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
	U-601948, NUDOCS 9204230319
	Download: ML20095C219 (189)
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I,30 02(0 3-24 )! P 1A.120 March 24, 1902 Docket No. 50-461 Document Control Desk Nuclear Regulatory Commission Washington, D.C. 20555 Subj ec t : Clinton Power Station Annual Radiolorical Environmentil Monitorinr. Pror.rnm Report

Dear Sir:

Illinois Power Company is submitting the 1991 Annual R 'iological Environmental Monitoring Prograin Report for Clinton Pow r Station. This submittal is provided in accordance with the requirements of Section 6.9.1.6 of Clinton Power Station Technical Specifications.

Sincerely yours,

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F.. f}tnc/wi III SpaggenbeIg, Manager, Licens ng and a fe ty WSI/alh Attachment cc: NRC Clinton Licensing Project Manager "RC Resident Office j Regional Administrator, Region III, USNRC Illinois Department of Nuclear Safety l

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1991 RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT --

FOR THE CLINTON POWER STATION i

4 Prepared by Radiological Environmental Group Radiation Protection Departnent -

May 1, 1992 l

1

TABLE OF CONTENTE ITEM PAGg ,

LIST OF TABLES 111 LIST OF FIGURES iv-I. EXECUTIVE

SUMMARY

1 A. Radiological Environmental Monitoring Program 1 ,'

B. Non-Radiological Environmental Programs 3 II. INTRODUCTION 5 A. Characteristics of Radiation 5 B. Sources of Radiation Exposure 6 C. Description of the-Clinton Power Station 11 .

D. Nuclear Reactor Operations 12 E. Containment of Radioactivity 13 F. Sources of Radioactive Effluents 14 G. Radioactive Waste Processing 18 III. RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP) 21 A. Program Description 21 B. Direct Radiation Monitoring 42 C. Atmospheric Monitoring 47

- D. Aquatic Monitoring 55 Fish 55 Shoreline Sediments 56 Bottom Sediments 57 Aquatic Vegetation (Periphyton) 58 E. Terrestrial Monitoring 59 Milk 60 Grass 63 Vegetables 63-Meat 64 Soil 64 F. Water Monitoring 65. !

. Drinking-Water 66 i

Surface Water 69 Well Water 73-G. - Quality Assurance Program 79 H. Changes to the REMP During 1991 80 9

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TApyJ'OF CON 1EXTS (Cont'd1, ITEM PAGE IV. ANNUAL LAND USE CENSUS 83

, Summary of Changes Identiffed in 1991 Annual Land Use Consus 85 V. METEOROLOGICAL CHARACTERISTICS 89 A. Description 89 B. Climatological Summary - 1991 91 VI. NON-RADIOLOGICAL ENVIRONMENTAL PROGRAMS 107 VII. LIST OF REFERENCES 111 VIII. APPENDICES 115 A. Exceptions to the REMP During 1991 115 B. RF.MP Sample Collection and Analysis Methods 123 C. Glossary 149 D. . CPS Radiological Environmental Monitoring Results During 1991 153 E. CPS Radiological Environmental Monitoring Quality Control Check Results 1991 183 k

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LIST OF-TABLES TABLE SUBJECT PAGEl 1 Common Sources of Radiation 9 2 1991 Radionuclide Composition of CPS Effluents 17' 3 Clinton Power Station Sample Codes 35 4 REMP Sample Locations 36 5 1991 Annual TLD Results 43 '

6 Quarterly Average TLD Results 47 7 1991 Average Gross Beta Concentrations in Air Particulates 50 8 1991 Average Monthly Gross Beta Concentrations in Air Particulates 51 9 1991 Tritium Concentrations in Drinking, Surface and Well Water 77 10 1991 Average Gross Beta Concentrations in Drinking, Surface and Well Water 78 ,

11 Changes to the REMP During 1991 81 12 1991 Annual Land Use Census 86 13 Historical Climatological' Data from Weather Stations Surrounding the Clinton Power Station 92 14 Classification of Atmospheric Stability 95.

15 Annual Joint Frequency Distribution of Meteorological Parameters During 1991 96 16 Fish Stocking of Clinton Lake 109-iii

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LIST OF FIGURES FIGURE SUBJECT EAGE 1 Dose Contributions t o the U. S. Population from Principal Sources of Radiation Exposure 9 2 Clinton Power Station Basic Plant Schematic 15 3 Potential Exposure Pathways of Man Due to Releases of Radioactive Material to the Environment 25 4 REMP Sample Locations within 1 Mile 27 5 REMP Sample Locations from 1 - 2 Miles 29 6 REMP Sample Locations from 2 - 5 Miles 31 7 REMP Sample Locations Greater than 5 Miles 33 8 Direct Radiation Comparison 45 9 Air Particulate Gross Beta Activity Comparison 53 10 Strontium-90 Activity in Milk 61 1

11 Drinking Water Gross Beta Activity Comparison 67 I 12 Surface Water Gross Beta Activity Comparison 71 13 Well Water Gross Beta Activity Comparison 75 14 Annual Land Use Census, Nearest Residence (R), Garden (G), and Milk Animal (M) within 5 miles 87

15- 1991 Clinton Power Station 10 Meter Wind Rose 103 16 1991 Clinton Power Station 60 Meter Wind Rose 105 l

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CLINTON POWER STATION

OPERATIONAL RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT FOR 1991 I. EXECUTIVE

SUMMARY

A. B3dioloolcal Environmental Monitorina Proaram I i L This report describes the Operational Radiological

Environmental Monitoring Program (REMP) conducted E during 1991 in the vicinity of the Clinton Power Station (the fifth year'of the Clinton Power Station

Operational Radiological Environmental Monitoring i Program). The REMP was performed in 1991 as required t by the Clinton Power Sta'cion Operating License issued

! by the United States Nuclear Regulatory Commission.-

The purpose of the REMP is to assess any radiological impact upon the surrounding environment due to the operation of the Clinton Power Station.

Over 1760 environmental samples were collected during 1991. These samples represented direct radiation; i

atmospheric, terrestrial, and aquatic environments; and Clinton Lake surface water and public drinking water supplies. More than 2290 analyses were performed on these environmental samples. Results showed that radioactivity levels were similar to the preoperational levels. The Clinton Power Station Preoperational Radiological Environmental Monitoring Report documented natural background radionuclides in tue environment surrounding Clinton Power Station prior to plant operations.

Direct radiation measurements were taken at 86 locations using thermoluminescent dosimeters. The average annual dose was 67 mrem. This is consistent with the annual average dose documented in the Preoperational Radiological. Environmental lionitoring Report, 1980 - 1987.

Atmospheric monitoring results for 1991 were within the l- same range as environmental measurements made prior to L the. commercial operation of the Clinton Power Station (preoperational data). No radioactivity attributable to the operation of the Clinton Power Station was detected in any-atmospheric samples during 1991.

Terrestrial monitoring includes analyses of vegetation

( samples, grass samplas, milk sanples, and meat samples, j Results of the analyses showed natural radioactivity L and radicactivity attributed to other historical nuclear events (i.e., fallout from nuclear weapons testing and the 1986 Russian reactor accident at Chernobyl). The radiiactivity levels detected were 1

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consistent with the preoperational results.

Aquatic monitoring includes analyses of_ fish samples, lake bottom sediment samples, lake shoreline sediment samples and aquatic vegetations (periphyton) samples.

All-sampled media showed that radioactivity levels were consistent with the levels in the preoperational program.

Ground and surface water monitoring results were consistent with the results obtained during the preoperational program. None of the 1991 samples showed radioactive material due to the operation of the Clinton Power Station.

Releases of gaseous radioactive materials were accurately measured in plant effluents during 1991. No

-release exceeded or even approached the limits specified in the Clinton Power Station Offsite Done Calculation Manual (ODCM). A total of 5.94 curies of

gaseous radioactive effluents were released during 1991. This total includes 5.22 curies of tritium.

Releases of liquid radioactive materials were also accurately _ measured in plant effluents during 1991. As stated above for gaseous effluents, no release exceeded or approached the Clinton Power Station _ODCM. limits. A total of-4.49 curlos of liquid radioactive effluents were released during 1991 This total includes 4.41 curies of tritium.

The highest calculated total body dose received by a member _of the public due to the release of radioactive materials in gaseous and liquid effluents from Clinton power Station was 0.00978 mrem.

Radiological environmental measurements taken during 1991 demonstrated that operational-and engineered controls on the radioactive effluents released from the Clinton Power Station functioned as designed. Any radioactivity that was detected in the environment at indicator locations was appropriately compared against both the measurements'at control locations (sample locations not affected by station operations) and preoperational results.

All comparisons betwoon 1991 operational data and preoperational data showed that the operation 1of Clinton Power Station had no measurable-effect upon the

-environment.in 1991.

2

B. Non-Radioloaical Environmental Procrams Illinois Power's corporateLenv$ronmental goal ~ states:

" Illinois Power is to become a corporate leader on

-- environmental issues by demonstrating its commitment and-encouraging a partnership with its customers and i employees-to improve-the environment".

To achieve this goal and to comply with various permits ',

and licenses, Illinois Power Company is involved in the following environmental projects adjacent to the Clinton Power Station (CPS) site:

Environmental Monitoring Program Fish Reading Ponds i l Lake Temperature Monitoring l

l Management of Settling Pond for Waterfowl Habitat l and Nesting Structure Improvement Deer Management Turkey Stocking Program Prairie Restoration l -

Water Chemistry

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Outreach Programs Illinois Power Company designed and constructed the

, facilities for the recreational areas surrounding

~Clinton Lake. These areas were then leased to the Illinois Department of Conservation (IDOC) for recreation. Illinois Power works with the IDOC and some private enterprises in maintaining these '

L facilities and programs, e.g., the Marina, fish cleaning stations,-boat ramps, parking lots, picnic shelters,-canoe access areas, bank fishing areas, etc.

The cooperative agreement between Illinois Power and IDOC results in a maximum effort of environmental awareness and effective managerial decisions.

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II. IRIRQDUCTION The following background information regarding basic radiation characteristics, plant operations, radioactive effluent controls and environmental monitoring is provided to assist the reader in reviewing this document.

A. characteristics of Radiation Atoms whose nuclei contain an excess of energy are called radioactive atoms. They release this excess energy by expelling electromagnetic or particulate radiation from their atomic centers to become stable- (non-radioactive). This process is called " radioactive deccy". X-rays and gamma rays are examples of electromagnetic radiation and are 11milar in many ways to visible light, microwaves and radio-waves. Particulate radiation may be either electrically charged such as alpha and beta particles, or have no charge, like neutrons.

The term " half-life" refers to the time it takes for half of a given amount of a radionuclide to decay. Some radionuclides have a half-life as short as a fraction of a accond, while others have a half-life as long as a million years.

Radionuclides may decay directly into stable

, elcuents or may undergo a series of decays which ultimately end up reaching a stable element.

Radionuclides are found in nature (e.g.,

radioactive uranium, thorium, carbon and potassium), and may also be produced artificially

, in accelerators and nuclear reactors (e.g.,

radioactive iodine, cesium and cobalt).

The activity of a radioactive source in the number of nuclear disintegrations (decays) of the source per unit of time. The unit of activity is the curie, A one curie radioactive source undergoes 2.2 trillion disintegrations por minute, but in the realm of nuclear power plart effluents and environmental radioactivity, this is a large unit.

Therefore, two fractional units, the microcurie bnd the picocurie, are more commonly used. The microcurie (uci) is one millionth of a curie (ci) The and represents 2.2 million decays per minute.

picocurie (pci) is one millionth of a microcurie and represents 2.2 decays per minute. Another way ;

cf comparing the pCl and the ci is by analogy with i distances. A picoeurie would be the width of a pencil mark while a curie would be 100 trips '

, around the earth.

5

l i i Radioactivity is related to the half-life and the ,

atomic mass of a radionuclido. For example, i Uranium-235 (U-235) with a half-life of 704 ;

millien years requires about 462,400 grams to ;

obtain an activity of one curie. But iodine-131 ;

(I-131) with a half-life of 8.04 days only

, requires about 0.003 grams to produce an activity !

of one curie. ;

1 Any mechanism that can supply the energy necessary i

to ionize an atom, break a chemical bond, or alter

the chemistry of a living cell is capable of 4

producing biological damage. Electromagnetic and .

particulato radiation can produce cc11ular damage !

in any of these ways. In assessing the biological ,

effects of radiation, the type, energy, and amount of radiation must be considered. '

External total body radiation involves exposure of all organs. Most background exposures are of this i form. When radioactive elements enter the body -

through inhalation or ingestion, their distribution may not be uniform. For example, radiciodino selectively concentrates in the thyroid gland, whereas radioc sium collects in muscle and liver tissue, and .adiostrontium collects in mineralized bone. The total dose to organs by a given radionuclido is also influenced '

by the quantity and the duration of tim) that the radionuclido remains in the body. Owing to radioactive decay and human notabolism factors, some radionuclides stay in the body for very chort times while others remain for years.

The amount of radiation doso which an individual receives is expressed in rem. Since human exposure to radiation usually involves very cmall exposures, the millirem (mrom) is the unit most commonly used. One millirem is one thousandth of ,

a rom. t

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J B. Epurces of RadiatiRD ExppnnIg Many cources of radiation exposure exist. The most common and least controllable cource is background radiation from cosmic rays and terrestrial radioactivity which mankind has always j lived with-and always will. Every second of our lives, over seven-thousand atoms undergo radioactive decay in the body of the average adult, i

Radioactive elements have always been a part of cur pienet and everything which has ccme from the l

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carth including our own bodies is, therefore, >

naturally radioactive. Radioactive materials found in the earth's crust today consist of such radionuclides as potassium-40 (K-40), uranium-238 1 (U-238), thorium-232 (Th-232), radium-226 (Ra-226) and radon-222 (Rn-222). These radionuclides are !

introduced into the water, soil and air by such !

natural processes as volcanic activity, :

weathering, crosion and radioactivo decay. 5 Some of the naturally occurring radionuclides,

such as radon, are a significant source of <

radiation exposure to the general public. [

Radicactive radon is a chemically inert gas produced naturally in the ground as a part of t'.s uranium and thorium decay series. Eadon continues to undergo radioactive decay, producing new naturally radioactive materials called " radon daughters". .These new materials, which are solid particles, not gaces, can stick to surfaces such ;

as dust particles in the air. Concentrations of radon in air are variabic and are affected by concentrations of uranium and thorium in soil, l altitude, soil porosity, tenperature, pressure, soil moisture, rainfall, snow cover, atmospheric conditions, and season. It can move through cracks and openings into basements of buildings and become trapped in a small air volume indoors.

. Thus, indoor radon concentrations are usually ;

higher than those found outdoors. Building materials such as cinder blocks and concrete are radon sources. Radon can also be dissolved in well water and contribute to airborne radon in houses when released through showers or washing. l Dust containing radon daughter particles can be inhaled and deposited on the surface of an individual's lung. Radon daughters emit high ,

energy alpha radiation dose to the lung lining.

Table 1 shows the average annual effective dose ,

due to radon. ,

1 About three hundrad cosmic rays originating from outer space pass through each person every second.

The interaction of cosmic rays with atoms in the

, earth's atmosphere produces radionuclides such as Beryllium-7 (Bo-7), Beryllium-10 (Bo-10), i Carbon-14 (C-14), tritium (H-3), and Sodium-22 (Na-22).. Portions of these radionuclidos becomo deposited on lcnd or in water while the remainder stay suspended in the atmosphere.

Consequently, there are natural radioactive materials in the soil, water, air and building l

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u materials which contribute to radiation doses to

. the human body. Natural drinking water contains i trace amounts of uranium and radium; milk contains l

. measurable amounts of potassium-40. Sources of j :.atural rediation and their average contributing radiation doses are suumarized in Table 1. Figure 1 graphically shows the percent contribution from

radiation exposure to the general population of i the United States. Radiation exposure levels from ,

natural radiation fluctuate with time and also can vary widely from location to location. The :

average individual in the United States receives '

! approximately three hundred mrom per year from

natural sources. In some areas of the country,

' the done from natural radiation is significantly i higher. Hosidents of Colorado, five thousand feet above sea level, rece3ve additional dose due to !

the increase in cosmic and terrestrial radiation levels. In fact, for every one thousand feet in >

olevation above sea level, an individual will roccive an additional one mrom per year from cosmic radiation. In several areas of the world, ,

high concentrations of mineral deposits result in l natural background radiation levels of several thousand mrom per year.

I In addition to natural background radiation, the average individual is exposed to radiation from a number of man-made sources. The largest of these ,

sources comes from medical diagnosis: X-rays, CAT-scans, fluoroscopic examinations and radio-pharmaceuticals. Approximately 160 million people in the United States are exposed to medical or dental X-rays in any given year. The annual doce to an individual from such irradiation averages 53 mrom. Smaller doses from man-made sources come from consumer products (television, smoke detectors, f ertili zer) , fallout from prior nuclear weapons tests, and production of nuclear power and its associated fuel cycle.

Fallout commonly refers to the radioactive debris !

that settles to the surface of the earth following the detonation of nuclear weapons. Fallout is d

dispersed throughout the environment but can be washed down to the earth's surface by rain or snow, i

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Average Annual Ef f ective Dose Equivalent to the U.S. Population h .la Notural Sources mrem

c. Rodon 200

b. Cosmic, Terrestrial, Internal 100

2. Mon-Made Sources mrem

c. Medical l X-ray Diocnocis 39 !

i Nuclear Medicine 11 1

b. Consumer Products 10

c. Occupational 1

d. Miscellaneous Environmental <1 i

e. Nuclear f uel Cycle <1 1 Approximate Total 360 NCRP87a l

l PERCENTAGE Or CONTRIBUllON CON 0VutR PRODVC10 (5tj NUCLE AR UC 000C (4s)., 4 I'

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Fil;'!RC 1: DnNE roNTHIHl:TIONS TO THE U.S, POPUl.A TIUX FROAl PRINCHbtl. NOUR(ES OF HADIATION EXPUNt;HE '

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r There are approximately two hundred radionuclideo i produced in the nuclear weapon detonation process; i a number of these are detected in fallout. The '

radionucliden found in fallout which produce most l

of the fallout radiation exposures to man are iodine-131 (1-131), strontium-89 (Sr-89),

strontium-90 (Sr-90), and cesium-137 (Cs-137). r C. Descrintion of the Clinton Power Station

, The Clinton Power Station is_ located in Harp Township, DeWitt County, Illinois. It is !

approximately six miles cast of the city of Clinton, Illinois. '

The station, its V-shaped cooling lake, and the surrounding Illinois Power Company-owned land t enclose 14,182 acres. This includes the 4,895 acro man-made cooling lake and about 90 acres of

. privately-owned property. The Clinton power Station is sited on approximately 150 acres on the northern arm of the lake. The cooling water discharge flume, which discharges to the-castern !

arm of the lake, occupies an additional 130 acres.

Although the nuclear reactor, supporting !

equipment, and associated electrical generation ;

and distribution equipment lie in Harp Township, ,

portions of the 14,182 acres lie in Wilson,

Rutledge, DeWitt, Creek, Nixon and Santa Anna Townships.

The cooling lake was formed by constructing an !

earthen dam near the cor. fluence of Salt Creek and ,

, the North Fork of Salt Crock. The resulting lake ,

l has an average depth of 15.6 feet, and includes an ultimate heat sink-of-about 590 acre feet. The '

ultimate heat sink provides sufficient water volume and cooling capacity for approximately thirty days of operation without makeup water. j Through arrangements with the Illinois Department of Contservation, Clinton Lake and much of the area immediately adjacent to the lake are used for i

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public recreation activities, including swimming, boating, water-skiing, hunting and fishing.

Recreational facilities exist at Clinton Lake and ,

accommodate up to 11,460 people por day dur4ng peak usage periods. The outflow from Clintbn Lake falls into Calt Creek and ficwc in a westarly '

direction for about 56 miles before joining the Sangamon River. The Sangamon River drains into the Illinois River which enters the Mississippi hiver near Grafton, Illinois. The nearest use of downstream water for drinking purposes is 242 !

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river miles downstream of Clinton Lake at Alton, Illinois as verified in August 1991 by the Illinois Environmental Protection Agency Public '

Water Service. Although some farms in the Salt Creek drainage area downstream of Clinton Lake use irrigation, the irrigation water in drawn from -

wells, not from the waters of Salt Creek.

i An estimated 810,000 individuals live-within 50 '

miles of the Clinton Power Station. Over half of these are located in the major metropolitan centers of Bloomington-Normal (located about 23 miles north northwest), Champaign-Urbana (located ,

about 31 miles east), Decatur (located about 22 miles south couthwest) and Springfield (located about 48 miles west southwest). The nearest city is Clinton, the county seat of DeWitt County, located about 6 miles west of the station. The ,

estimated population of Clinton is about 8,000 people. Outside of the urban areas, most of the land within 50 miles of the Clinton Powet Station is used for farming. The principal crops are corn ,

and soybeans. 3 D. llu_glear Reactor Operations The fuel of a nuclear reactor is made of the element uranium in the form of uranium oxide. The

, fuel produces power by the process called t " fission". In fission, the uranium atom absorbs a neutron (an atomic particle found in nature and produced by the fissioning of uranium in the i reactor) and splits to produce fission products, !

heat, radiation and free neutrons. The free neutrons travel in the core; further absorption of

, neutrons by uranium permits the fission process to continue. As the fission process continues, more fission products, radiation, heat and neutrons are produced and a custained reaction occurs. The heat produced is extracted from the fuel to produce steam which drives a turbine generator to produce electricity. The fission products are predominantly radioactive; they are unstable

elements which emit radiation as they change from unstable to stable elements. Neutrons which are not absorbed by the uranium fuel may be absorbed r by stable atoms in the materials which make up the components and structures of the reactor. In such cases, stable atoms often-become radioact',ve.

This process is called " activation" and the radioactive atoms which result are called

" activation products".

12

- . _ , - _ _ , _ . . . _ .._ ._ _. _ ._ ._._. _ .-.- _ _._ ________._.___ _ _ ..~_.__.. _____ _ - - -

The reactor at the Clinton Power Station is a ;

boiling water reactor (DWR) . In this type of ',

reactor the fuel is formed into-amall ceramic pollets which are loaded into sealed fuel rods.

The fuel tcds are arranged in arrays called :

bundles which are supported within a massive steel ,

rcactor vessel. j The spaces betwoon the fuel rods are filled wJth water. The heat released during the fission of 4 fuel atoms is transferred to the water surrounding }

the fuel rods. A type of pump which contains no moving parts (a jot pump), and recirculation pumps i

are used to force the water to circulato through the fuel bundles to assure even cooling of the fuel rods. As the water absorbc heat from tho fuel rods some of it is changed to steam. The '

steam is used to drive a turbine which in coupled to a generator, thereby completing the conversion of the energy released during fission to l olectricity.

After the steam passes through the turbino it is condensed back to water and returned to the reactor vessel to repeat the procosa. As the water circulatos through the reactor pressure vessel, corrosion allows traco quantities of the component and structure surfaces to got into the <

water. The corroded material also contains radioactivo substances known as activated corrosion productr. Radioactive fission and activation produc are normally confined to the primary system als.iough small leaks from the !

. primary system may occur. Figure 2 providos a i basic plant schematic for the Clinton Power Station and shows the separation of the cooling water from plant systems.

E. Containm4Dt of Radioactivity Under normal operating' conditions, essentially all '

radioactivity is contained within the first of several barriers of the primary system which .

collectively prevent escape of radioactivity to the environment.

The fuel cladding (metal tubes) provides the first barrier. The ceramic fuel pollets are scaled 4 -withinizircaloy-metal tubos. There is_a small gap between the fuel and the cladding whero the noble gases and other volatilo nuclidos collect.

i I~

13

I i

The reactor presaure vesse] and the steel piping l of the primary coolant system provide the second l barrier. The reactor pressure vessol is a coventy-foot high vessel with steel walls ,

, approximately four to seven inches thick which '

encase the reactor core. The reactor pressure vessel and the steel piping provide containment fcr all radionuclides in the primary coolant.

i The Containment Building provides the third 1

barrier. The Containment Building has stocl-

- lined, four-foot thick reinforced concrete walla 'r l which completely enclose the reactor pressure vessel and vital auxiliary equipment. This

, structure provides a third line of defense agains" the uncontrolled release of radioactive materials :

to the environment. The massive concrete walls also serve to absorb much of the radiation emitted during reactor operation or from radioactive ;

materials created during reactor operations. i F. E2prees of Radioactive Effluents In a normal operating nuclear power plant, most of the fission products are retained within the fuel and fuel eladding. Ilowever, the fuel i manufacturing process leaves traces of uranium on j the_ exterior _of the fuel tubes, rission products from the eventual fission of these traces may be released to the primary coolant. Other small amounts of radioactive fission products are able to diffuse or migrate through the fuel cladding and into the primary coolant. Trace quantities of i

the corrosion products from component and structural surfaces which have been activated, also get into the primary coolant. Many soluble fission and activation products such as '

radioactive iodines, strontiums, cobalta and cosiums are rencved by domineralisers in the purification systems. The noble gas fission products, activated atmospheric gases introduced with reactor feedwater, and some of the volatile fission products such as iodine and brominc, are '

carried from tFe reactor pressure vessel to the condenser with the steam. The steam jet air ejectors or the condenser vacuam pump remove the gases from the condenser and transfer them to the off-gas treatment system. In the off-gas treatment ~ system the gases are held up by adsorptica on specially treated charcoal beds to allow the radioactive gases to decay before they are released through the main ventilation exhaust j stack.

i 14

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Small releases of radioactive liquida from valves, i piping, or equipment asscciated with the primary l coolant system may occur in the Containment, Auxiliary, Turbine, RadWaste and Fuel Buildings, t The noble gases become part of the gaseous wastes l while the remaining radioactive liquids are

, collected in sumps and processed prior to release.

Processed primary coolant water that does not meet chemical specifications for reuse may also become waste water. These represent the principal sources of liquid effluents.

Table 2 summarizes the-composition of radioactive effluents (gaseous and liquid) released from the .

Clinton Power Station during 1991. The highest t calculated total body dose received by a member of the public due to the release of those radioactive materials was 0.00978 mrem. This is compared to the 93 mrem per year received in Central Illinois due to natural background radiation.

i lABLE ?

l 1991 R AD10WCt f 0E CMOSITION OF CPS f f FLUENTS radionvelide Petf-life paseous Effluents (Cl) tiovid Efftvants(Cl)

Cross Alpha KA 0.0000015

Tritim (M 3) 12.Jy $.22 4.41 Sodim 24 14.97h 0.000208

Chrcelum*$1 27.7d 0.00874 0.0113 Manganese 54 312.7d 0.0000548 0.0052 fron 55 2.7y

0.0488 Cobalt 58 70.8d 0.0000314 0.0030 tron 59 44.5d

0.00115 Cobalt +60- 5.3y 0.000230 0.0128 5trontim 87 50.6d 0.00000434 *

~Technetim 99m- 6.0th 0.000745

Silver 110m 249.Ed

0.0000143 lodine-131 8.0d 0.0000292

lodine-133 20.8h 0.0000318

renon 135 9.1h 0.708

fotal 5.94 4.49 l

Isotopes not detected at the 95% confidence level in ef fluents rele sed f run the Clinton Power Station.

17

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

l l

G. Radioactive Wagte Processing !

In a normal operating nuclear power plant, radioactive liquid and gaseous vastes are collected, stored and processed through treatment !

systems to remove or reduce most of the l l radioactivity (excluding tritium) prior to reuse ;

within the plant or discharge to the environment. '

These processing systems are required by the Clinton Power Station Offsite Dose Calculation Manual to be installed and operable to help ensure ,

all releases of radioactive liquid and gaseous !

effluents are As Low Ss Beasonably Achievable

( ALARA) .

The liquid waste treatment systems consist of filters, domineralizers and evaporators. Liquid wastes are routed through the waste evaporators to ',

be degassed and distilled thereby reducing their volume and' concentrating their radioactivity. The :

distillates are further treated through demineralizers and filters and transferred to the-waste evaporator condensate storage tanks. Liquid wastes are processed through the appropriate portions of the liquid waste treatment system to r provide assurance that the releases of radioactive materials in liquid ef fluents will be kept ALAPA.

Liquid wastes are discharged into the plant cooling water stream which varies from approximately 5,000 gallons per minute, when the plant is~in shutdown, to 567,000 gallons per minute, when the plant is at full power. The liquid effluents are thoroughly mixed with and diluted by the plant cooling water as it travels the 3.4 miles of the discharge canal before it enters Clinton Lake east of DeWitt County Road 14.

The Clinton power Station offsite Doce Calculation Manual requires that liquid effluents shall not contain a higher concentration of any radioisotope '

than that set for continuous exposure to the general public. This condition is satisfied at the point the liquid offluent is-first introduced into the cooling water flow. The additional 4

dilution which occurs in the cooling water canal reduces-the concentrations of radioisotopes to between 1/73 (minimum flow) and 1/1890 of their original value before the water enters Clinton Lake.

-The concentrated radioactive solids captured-in the liquid waste treatment system are solidified and shipped off-site for disposal at licensed low-level waste disposal facilities. ;

T 18

Tho gaseous effluents from the main condenser are held up in i the off-gas charcoal beds for at least 46 hours5.324074e-4 days 0.0128 hours 7.60582e-5 weeks 1.7503e-5 months . This provides time for the decay of most of the radionuclides present sinto most have a half-life of less than 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .

If gaseous effluents in the ventilation exhaust system for the Containment Building and for the Secondary Containment structure exceed concervatively set levels, they are processed through charcoal beds and high officiency particulate air filters in the Standby Gas Treatment System before being discharged to the environment. This combination of filters and charcoal beds is rated to be 95%

efficient for removing iodines and greater than 991 efficient for removing particulate materia) larger than one micron (one millionth of an inch) in diameter.

19

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-l- . 3:

RADIO _0GICAL ENVIRONMENTAL MONITORING )ROGRAM

III. RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMPL

f. Procram Description The Clinton Power Station is required to maintain L cadiological environmental monitoring program in accordance with the Code of Federal Regulations (CFR) Title 10, Section 20.201 and Critorion 64 of CFR Title 10, Part 50, Appendix A. The program was developed using the following guidanco published by the United States Nuclear Regulatory Commission (USNRC):

Regulatory Guide 4.1, " Programs for l Monitoring Radioactivity in the Environs of ,

Nuc1 car Power Plants" l

)

USNRC Radiological Assessment Branch Technical Position on Radiological Environmental Monitoring (1979)

The Radiological Environmental Monitoring Program ,

is an extensive program of sampling, measuring and i analyzing that was instituted to monitor the radiological impact of reactor operation on the environment. Objectives of the program include:

identification, measurement and evaluation of existing radionuclides in the environs of the ,

Clinton Power Station and fluctuations in !

radioactivity levels whien may occur evaluation of the measurements to determine the impact of the Clinton Power Station operations on the local radiation environment collection of data needed to refine environmental radiation transport models used in offsite dose calculations F

verification that radioactive material containment systems are functioning to minimize environmental releases to levels that are ALARA demonstration of compliance with regulations and the Clinton Power Station Offsite Dose Calculation Manual.

Implicit in these objectives are the requirements to trend and assess radiation exposure rates and radioactivity concentrations in the environment that may contribute to radiation exposure to the public. The program consists of two phases, 21

i preoperational and operational. The preoperational portion of the program (the program was initiated in May, 1980 and was completed on ,

February 27, 1987) established the baseline for !

the local radiation environment. Assessment of 1 the operational-impact of the Clinton Power Station on the radiation environment is based on data collected since the beginning of reactor i operation. The operational phase implements confirmatory measurements to verify the in-station controls for the release of radioactive material

, are functioning as designed. Figure 3 shows the ,

basic pathways of gaseous and liquid radioactive effluents to man. .

Illinois Power Company maintains a contract with i Teledyne Isotopes Midwest Laboratory (TIML) for analysis of all radiological environmental !

samples. TIML is located in Northbrook,-Illinois.

Samples are collected by Illinois Power Company personnel and shipped to TIML for analysis. After analysis, environmental c.amples are caved at TIML for a specified period of time in case additional analysis is required. Analytical results aJe reported monthly to the Clinton Power Station and reviewed by company radiation protection personnel. ,

Current regulatory guidance recommends evaluating direct pathways, or the highest trophic level in a >

dietary pathway, that contribute to an individual's dose. The "important pathways" are selected based primarily on how radionuclides move through the environment and eventually expose individuals, as well as on man's use of the environment. The scope of the program includes the monitoring of five environmental compartments:

direct radiation

atmospheric

aquatic

<

terrestrial environments .

ground and surface water.

Each pathway is monitored at " indicator" and ;

" control" locations. Indicator locations ara '

generally within the 10-mile radius of the station.- Control locations are located at least ten miles from the plant, far enough to be unaffected by plant operations. An increase in ,

dose rate or radioactive material concentration at ,

an indicator location may be due to plant operations.

22 3

5 Locations of sampling stations are shown on maps (

in Figuros-4 through 7. Table 3 providos a list l of the camplo codes for each samplo medium and :

c Table 4 providos information on sample location, :

media sampled at each location, and a brief ,

description of each location where samples are taken. The location is listed according to _

distanco (in miles) and the compass sector ;

relative to the Station Heating, Vontilation and Air conditioning (HVAC) stack. .

An on-site meteorological tower collects i information such as vind spood, wind direction and ,

air temperature at various levels. Motocrological monitoring in further discuocod in Section V of this report.

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l FIGURE 4: REMP SAMPLE LOCATIONS WITIIIN 1 MILE M.02349A 27 3-8-91

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

I TABLE 3 !

f&TNTON POWER STATION SAMELI CODES Code Sample Medium AP Airborne Particulate ;

'AI Airborne Iodino TLD Direct Radiation (Thormoluminoscent Dosimeter)

M Milk DW Drinking Water SW Surface Water ,

WW Well Water VE Green Leafy Vegetables -

F Fish SL Periphyton, Slime, Botton organisms and Aquatic Vegetation

BS Bottom Sediments SS Shoreline sedimonts i

SO Soll ,

-ME Meat l

l l

l 35

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

j TABlf 4 ifMP $&MP([ [MAf]O4$8 [

Statt A Sanpls Code Etdha L ec et t0 ') f.tSrirtion CL 1 AP,A14 fLD,50,G 1.8 miles W near the gate to Carp Quest, $ of Bis hek i

CL 2 AP,Al,#LD,50,G 0.7 miles hhf Located on site's main access road.

Collocated with CL*TO and CL 71.

CL 3 AP,Al.fLD,50 0.7 mfles hE Located on site's secondary access road.

Collocated with CL 69 ,

CL 4 AP.A!,Tt'),$0 0.8 miles $W lx ated on farm SE of llLinois Power ter.reation Area. Collocated with CL 67.

i CL*5 TLD 0.7 miles hhE Located on site's main access road CL 6 AP,A1 tLD,$0 0.8 miles W3W Located near the Ittinois Power Recreation Area softbatt fleid. Collocated with CL 66.

CL*7 AP,Al,TLD,10 2.3 miles $E Located in the Mascoutin State Recreation Area CL TB' $$,SL 2.1 miles SE SE of site on Clinton Lake CL*7C B5,St,$5 1.3 miles st SE of .ite on Clinton take CL*7D W 2.3 miles ESE Located in Illinois Power Departnent of Conservation of fice at the Mascoutin >

State Recreation Arca b CL-8 AP,Al,TLD,50,0 2.2 miles E Located at DeWitt Cemetery CL 9 $V,$L 2.7 miles ESE tocated on hE side of DeWitt County Route 14 bridae CL 10c SW,BS,SS,st(1) 5.0 miles EhE Located on SE side of Illinois Route 48 bridge ;

CL-11e- AP,AI,TLD,to,C 16 miles S Located SV of Argenta at the Illinois Power Substation CL 12 W 1.6 miles E Located at the DeWitt ptrgeouse CL*13 SV 3.6 miles SV Located near t. e $att Creek bridge on Ittinois Route 10 CL 13A BS 5.0 Mies SV Located on Salt Creek at the Route 1300E bridge CL-14 LW Plant service Located in the Plant service Building Building 36

.-- a -- _ . - . -. . . - . - . - - , - - - . - , . , ,

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

fitt! 4 (Cont'd)

Station Sawle Qde Wed he Qcat im testriotion CL 15 AP.Al.TLD 0.9 miles k located north af Crs on Route 900W (a Med to program in .lan 1990)

CL 16 $0 0.t miles Ett Located ESE r,f CPS just north of dischstge fitre (nif40 to program in Oct IPPO)

CL*17 BS 3.5 miles sw located on the take side of Clinton take

! dam (aMed to progrem In oct 1990)

CL 19 f,8$,55,$L 3.4 miles ( Located E of site at the end of the discharge ftwe CL*20 TLD 9.1 miles thf Located at the Carrgrourd Cemetery W of i

Farner City l 1.

CL 21 TLD 0.9 miles Nht Located at the intersection of litinois Route 54 ard the site's seccedary access road CL-22 TLD 0.6 miles NE Located on the site's secordary access road CL 23 TLD 0.5 miles tut Located on the site's secordary access com >

CL 24 TLD 0.5 miles E Located on the site's secordary access road [

CL 25 TLD 0.4 miles ($E Located on the owner Controlled Area f ence 4

CL 26 TLD . 0.3 miles SE Located on the owner Controt ted Area fence t

CL+27 TLD 0.6 miles $$E Located on the owner Controtted Area f ence I- near the Meteorological fewer 's i

CL 28 -TLD 0.5 miles 5 Located on the 0 ner Controt ted Area f ence I

CL 29 TLD 0.6 miles $$V Located on the owner Controt ted Area fence CL-30 TLD 0.7 miles SW Located on the owner Controlled Area fence at .

the entrance to lltinois Power Recreation Area CL-31 TLD 0.8 miles vsw - Located on the owner Controt ted Area f ence near the IItinois Power Recrestion Area -

softball fletd ,

l.

CL 32 TLD 0.7 miles WSW Located on the owner controt ted Area f ence ,

riear Clinton Lake CL 33c TLD 11.7 miles sw Located in Marca at family residence 37 l- -

i 1881E 4 (Cont'd) >

Statico tanple !

Code Medita Lorstion S t e lt't id !

CL+34 TLD 0.8 miles VW L ocs 3 near cps visitors Center l CL 35 TLD D.T miles W Located ricar CPS Visitors Center ricar Ittinois toute A tiridge j

CL 36 TLD D.6 miles k Located on Illinois toute 54 near .

Intersection with site's main access rand CL 37 TLD 3.4 miles W toctted N of site .

CL 38 TLD 3.6 miles kht located tiear microwave tower N of site CL 37 TLD 3.8 miles ht Located 2 mile of DeWitt CL*40 TLD 3.5 miles ht Located 0.6 miten N of DeWit' CL 41 TLD 2.4 miles ! Located at S DeWitt city liett f CL 42 TLD 2.8 miles ESC 1.ocated 5 of DeWitt County toute 14 bridge CL 43 TLD 2.8 miles $t Located on Clinton Marina access ru M CL 44 fLD 2.3 miles $st Located near tilnton Marine Boat Sales ,

CL 45 TLD 2.8 miles 5 Located at 8 ane Day use Aree u

CL 46 TLD 2.8 milec $$W Located at Peninsula Day Use Area CL 47 TLD -3.3 ailles $W Located near Clinton take Dam Acevn 2 cad CL-43 TLD 2.3 miles V5W Located at residence on West Side ac;tss voac CL 49 TLD 3.5 miles W Located W of site atons Ittinois some na I

CL 50 ftD 3,7 miles VW Located WW of site

CL 51 TLD 4.4 mites WW L ocated W of site f CL 52 TLD 4.3 miles WW txated kW of site CL 53 TLD 4.3 miles E Located E of site CL 54 TLD 4.6 miles ESE tocated 2 miles W of Weldon CL 55 TLD 4.1 miles SE Located 1.5 miles W of Vetdan '

CL 56 TLD 4.1 miles $tE Located $0E ef site 38 I

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

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

18PLE 4 (Cont'd!]

Station sanple Code Meditn Location L;escrietion CL 57 TLD 4.6 miles S Located s of site CL 58 TLD 4.3 miles SSW Located in rural Lane CL-59 TLD 3.3 miles $5W Located near Lane city limit CL-60 TLD 4.5 miles SW t.ocated $V of Clinton Lake Dam near salt Creek ,

CL-61 -TLD 4.5 miles VSW Located WSW of site CL-62 TLD 1.9 miles NW Located NW of site CL-63 TLD 1.3 miten WWW Located at North Fork Boat Access CL-64 ftp 2.1 miles VNW Located 0.5 miles N of Birkbeck CL-65 TLD 2.6 miles ENE Located at residence in DeWitt CL-66 TLD 0.8 miles WSV Located near the It tinois Power Recreation

- Area softbatt field. Cottocated with CL-6. ,

CL-67 TLD 0.8 miles SW Located on farm SE of Illinois Power Recreation Area. Collocated with CL-4.

CL-68 TLD 4.6 miles N Located k of site. Cot tocated with CL "O.

, CL-69 TLD 0.7 miles NE Locateo on site 4 secondary access road.

~

Cot tocated witt, CL-3.

CL-70 TLD D,7 miles NNE Lecated on site's secondary access road.

Collocated with CL 2 and CL 71.

CL-71 TLD 0.7 miles NkE Located on site's secondary access road, Cot tocated with CL-2 and CL 70.

CL 72 TLD 4.5 miles whE Located NNE of site. Cottocated with CL 77 CL 73 TLD 5.1 miles ENE Located near the MidAmerica comodities ptart on Ittinois Route 43. Collocated with CL-113.

CL-74 TLD 1.9 miles W Located at Canp Quest CL-75 .TLD 0.9 miles N Located N of site CL-76 TLD 4.6 miles N Lecated N of site CL 77 TLD 4.5 miles NNE Located kNE of site. Collocated with CL 72.

39

. . .. . ~ - ~ . . . . . . ~ ~ - -- . ..~ - - ... - ~ . - s -- - . . >-,~t.-

t TARif 4 (Cont'd)

~ Station- S vpt e (pde EtGE tootton Description CL 78 TLD 4.8 miles NE Located ht of site ,

CL 79 TLD .4.5 mites thE tocated ENE of site CL 80 TLD 4.1 miles V Located V of site CL 81 TLD 4.5 miles WNV Located VNW of site CL-82 TLD . 0.9 miles W Located at Illinoll Power Recreation Area CL 03 TLD 0.5 miles kWW Located near lilinois Route 54 E of the bridge Ct P TLD 0.6 miles E *. ocated on Old Clinton Road between DeWitt and site. Collocated with CL 94 and CL-86.

CL 85 TLD 0.6 miles ESE Located ESE of site CL 86 TLD 0.6 miles E Loca*.ed on Old Clinton Road between OcWitt and site. Collocated with CL 84 and CL-94 CL 87 TLD 0.6 miles ESE Locited near discharge flme road CL-88 TLD 2.4 miles $E Located SE of site CL-89 B5,$t 3.6 miles khE Located hWE of site CL-90 $W 0.4 miles SE Located at start of discharge fit.rw CL-Y1 SV 6.1 miles ENE Located at Parnell Boat Access CL-92 -SV 0.1 miles WW Located at CPS Intake Screenhouse CL-93 SV.SS 0.4 miles SW Located at CPS Settling Pcnd k CL-94 AP,41,50 0.6 miles E Located on Old Clinton had between DeWitt and site. Collocated with CL-84 r.rd CL-84.

CL-95c TLD 10.5 miles W Located at a family residence west of Clinton

. CL 96c TLD 10.9 miles WSV Locat<d at a family reefdence SW of Clinton CL-97c TLD 10.3 miles SSW Located en Macon County Road 1400E Si of Maroa CL-105c f,ss,BS,st - 50 niles s Located at Lake shelbyville CL-106- NE 2.0 miles NNE Located NNE of site s

P 40

_ . . __...m._ . _ . . . - ...m. - - _ , , _ . . . . . . . . _ . , _ . . .-.._.._____....._.m.._

TABLE 4 (Cont'd)

Station Sanple Code Mim Leestion Deseriotinn CL 109 TLD 0.7 miles Wsw Located on the owner Controlled Area fence near Shooting Range CL 110 TLC 0.8 m!les SW Located on the owner Controlled Area fence CL 111 TLD 0.6 miles NE Located near site's secondary access road i

CL 112 TLD 4.6 miles N Located N of site. Collocated with CL 68. !

CL-113 TLD 5.1 miles Eh! Located near the MidAwrica Canedities plant on Illinois Route 48. Collocated with CL 73.

C'. 114c VE 12.5 miles SSE Located 5 of Cisco CL-115 VE 0.7 miles NE Located on site's secondary access road CL-116e M,G 14 miles Vsv Located in rural Kenney CL-117 %T 0.9 miles N Located N of site

. Sample location is listed by station code, location aM ruter. Statior Code is Clinton (CL) - Neber (site's nunter designator). Location is listed by distance in miles and directional sector from the station HVAC stack.

.c Control location; all other locations are indicaters.

L (1) Control location for surface water only.

l I

l l

r 41 .

l-

_ . . _ . _ _ _ _ _ _ . _ _ . . _ . . _ _ _ _ _ _ . . _ _ . _ . . _ m ...__ __. _ _ _._ .._

l l

B. J11 rect Radiation Monitorino Radionuclides present in the air, and those deposited in or on the ground cause human exposure ;

by immersion in the atmosphere or by deposition on '

the ground. TLDs (thermoluminescent dosimeters) are used to measure the ambient gamma radiation field at many locations around the Clinton Power Station. TLDs are crystalline devices that store energy when they are exposed to radiation. They .

can be processed months after exposure with !

minimal loss'of information. This makes them well suited for quarterly environmental radiation measurements. During processing, the stored energy is released as light and measured by a TLD reader. The light intensity is proportional to the radiation dose the TLD received. The TLDs used in monitoring around the Clinton Power Station are easily capable of measuring environmental levels of radiation, approximately 20 mrem per querter.

Monitoring stations are placed near the cite boundary and approximately five miles from the reactor, in locations representing the sixteen compass sectors. Other locations are chosen to measure the radiation field at places of special interest such as nearby residences, meeting places and population centers. Control sites are located farther than ten miles from the site, in areas that should not be affected by plant operations.

TLD measurements register the gamma ray exposure in milliroentgen (mR). For reporting purposes mR is numerically equivalent to mrem. Consequently the terms are used interchangeably.

Results of the annualized TLD dose measurements

, are summarized by location in Table 5. Figure 8 l compares operational program control and indicator location average quarterly gamma dose rates to I

preoperational program measurements. A total of 358 TLD measurements were made in 1991. The average quarterly dose at indicator locations,was 16.8 1 2.0 mrem. The quarterly measurements ranged from 10.3 to 24.7 mrem. At control-locations the average quarterly dose was 16.2 2.8 mrem. The quarterly control measurements ranged from 9.6 to 21.4 mrem.

(

l

?

42 N

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

TABLE 5 1991 ANNUAL TLD RESULTS Station Codo'(a) Annual Total (t 2 s.d.), mR(b)

CL-1 65.1 i 2.6 CL-2 67.4 1.6 CL-3 66.4 i 3.1 CL-4 67.2 1 1.7 CL-5 69.9 1.3 CL-6 58.6 1 2.5 CL-7 68.5 4.1 CL-8 69.3 1 2.3 CL-11(c) 62.6 i 1.9 CL-15 50.2 1.6 CL-20 67.3 i 3.2 CL-21 69.6 1 2.8 CL-22 68.7 2.6 CL-23 52.3 1.7 CL-24 69.2 2.2 CL-25 50.3 i 2.8 CL-26 59.6 2.0 CL-27' 64.1 2.2 CL-28 69.5 2.4 CL-29 68.9 i 4.0 l CL-30 74.9 5.4 CL-31 62.4 1 3.2 CL-32 66.3 i 3.5 CL-33(c) 75.7 5.1 CL-34 85.3 6.3 CL-35 65.7 1.7 CL-36 65.9 3.4 CL-37 66.8 3.9 CL-38 72.0 1 3.0 CL-39 60.6 1 2.8 l CL-40 65.7 2.2 l CL-41 67.1 2.8 CL-42 60.6 i 2.9 CL-43 67.4 3.3 CL-44 73.1 1 2.8 CL-45 71.9 t 4.2 CL-46 65.6 ! 3.8 CL-47 73.1 3.2 CL-48 67.9 4.4 i.

CL-49 73.4 3.8

- CL-50 72.0 4.6 CL-51 74.0 i 3.3 l CL-52 72.6 2.8 l

CL-53 63.5 i 4.1 CL-54 67.6 1 3.2 CL-55 64.7 2.1 CL-56 67.1 i 3.0 43

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

TABLE 5 (Cont'd)

Station Code (a) Annual Total ( 2 sd. ) , n1R ( b ).,

CL-57 66.7 2.6 CL 64.3 I 2.8 CL-59 65.3 1-1.4 CL-60 70.4 2.8 CL-61 70.6 i 2.9 CL-62 71.6 3.4.

CL-63 77.8 1 3.6 CL-64 74.9 i 2.9 CL-65 77.0 3.8 CL-66 61.3 i 4.0 CL-67 64.3 i 2.1 CL-68 70.2 i 3.4 CL-69 67.8 i 2.3 CL-70 59.5 1 5.2 CL-71 67.3 i 1.8 CL-72 61.3 2.5 CL-73. 74.3 i 3.4 ,

CL-74 64.9 i 3.0 CL-75 70.1 i 2.3 CL-76 66.5 1 2.5 CL-77 63.2 2.4 CL-78 64.6 3.3 CL-79 69.3 1 3.5 CL-80 68.7 i 2.4 CL-81 75.5 i 3.7 CL-82 68.6 3.9 CL-83 73.9 2.7 CL-84 66.6 1 2.2 CL-85 69.9 2.7 CL-86 69.0 1 1.9 CL-87 74.8 1 2.6 CL-95(c) 67.4 i 0.1 CL-96(c) 59. .. 1 0.4 CL-97(c) 50.8 2.5 CL-109 61.7 ! 2.8 CL-110 66.5 2.1 CL-111 53.5 i 6.9 CL-112 67.3 2.2 -

CL-113 69.3 1 3.2

-(a) For station location description refer to Tab]e 4 (b) Annual TLD results are the total-of the quarterly doses at the location (c) Control Station 44

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

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Average doses (12 standard deviations (s.d.)),

broken down by-calendar quarter, are shown in Table 6 for both indicator and control locations.

TABLE 6 OUARURLY AVERAGE TLD RESUIJJ Indicatqr Control First Quarter 15.0 i 2.6 14.9 2.0 Second Quarter 17.2 1 3.7 18.1 1 5.1 Third Quarter 17.2 i 3.2 16.6 2.9 ,

Fourth Q'2arter 18.1 3.7 15.7 ! 8.5 Site CL-34, located 0.8 miles WNW of the station, registered the highest annualized dose: 85.3 mrom during 1991. The elevated measurements are attributed to the proximity of CL-34 to a tile field constructed of ceramic pipe tile. This material is known to be rich in naturally occurring radionuclides. Preoperational data indicated that the dose at this location had been among the highest measured. Between 1980 and 1984 CL-34 registered, on the average, the highest annual dose. In 1985 and 1986 its dose was in the top 20% of all locations monitored.

From these observations, no increase in environmental gamma radiation levels resulted from operation of the Clinton Power Station during 1991.

C. Atmospheric Mqnitoring The inhalation and ingestion of radionuclides present in the atmosphere is a direct exposure pathway to man. A network of ten active air samplers around the Clinton Power Station monitors this pathway. Nine of the air sampling stations are strategically located in areas which are most likely to indicate effects due to the release of radioactive effluents from the Clinton Power Station. The control location is located approximately 16 miles south of the plant in an area which is likely to be independent of the effects of station operations. Historical meteorological data indicates this control location is normally upwind from the plant.

47

No contribution to the general level of airborno particulate radioactivity could be identified as a result of station operations during 1991. The radioactivity that was detected is norms 11y found in the environment and is_ consistent with expected concentrations of natural radioacti/ity and fallout from prior atmospheric nuclear weapons testing.

Mechanical air samplers are used to draw a continuous volume of air through two filters ,

designed to collect particulates and radiciodines present in the atmosphere. The samplers are equipped with a pressure-sensing flow regulator to uaintain a constant sampling flow rate of about one cubic foot per minute. The total volume is calculated based on the amount of time the air sampler ran and its flow rate. The air sampling equipment is maintained and calibrated by the Clinton Power Station personnel using reference standards traceable to the National Institute of Standards and Technology.

Air samples are collected weekly and analyzed for gross beta and I-131 activities. Quarterly all air particulate filters collected during that period are combined and counted for gamma isotopic activity. Since the intent of particulate sampling is to measure airborne radioactivity released from the plant, the counting of short-lived daughters produced by the decay of natural radon and thorcn may mask plant contributions.

Therefore, the filters are not analyzed for at least five days after their collection to allow for the decay of the short-lived daughters, thereby reducing their contribution to the gross beta activity.

Results of the gross beta airborne particulate analyses provided comparisons between indicator and control locations for the year, as well as comparisons between locations in relation to

_ spatial and temporal differencgs. The calculated i

annual average was 0.021 gCi/m for all indicator

-locations and 0.022 pCi/m for the control location. These results are consistent with the preoperational averages for both indicatgr and control locations which were 0.027 pCi/m . The l location with the highest annual average was indicator station CL-3 located 0.7 miles northeast of the Clinton Power Station. This locgtion had an average concentration of 0.023 pCi/m Individual location averages for the year are presented in Tab 2e 7.

48

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

d Minor-fluctuations in the gross beta concentrations were noted throughout the year.

The general' trend for average weekly gross beta concentrations in the indicator locations correlated to the trend-for control locations throughout the monitoring period. This correlation'is evidenced by the similarity of the trends in the average monthly gross beta concentrations displayed in Figure 9. No significant difference was indicated between individual locations. Monthly averages for indicator and control locations for the year are

. presented in Table 8.

All gross beta concentrations for 1991 were within normal background levels and no increases were noted as a result of the aperation of the Clinton Power Station.

Naturally occurring Be-7 was the only gamma-emitting radionuclide detected in analyses of particulate filters.

i r

-t -

49 T

. -- ., , ,.c- w . - - , .. -<-

TABLE 7-1991 AVERAGE GROSS BETA CONOENTRATIONS J.F AIR PARTICULATEE Average i 2 s.d.

Station Description (pCi/m 3)

CL-1 (I) Camp Quest (Birkbeck) 0.021 1 0.012 CL-2 (I) CPS Main Access Road 0.022 0.012 CL-3 (I) CPS Secondary Access Road- 0.023 0.011 CL-4 (I) 0.8 Miles SW 0.022 d 0.012 CL-6 (I) IP Recreation Area 0.020 ! 0.012 CL-7 .(I) Mascoutin State Recreation Area 0.020 1 0.012 CL-8 (I) DeWitt Cemetery 0.022 1 0.012 CL-11 (C) IP Substation (Argenta) 0.022 1 0.012 CL-15 (I) 0.9 Miles N 0.022 0.011 CL-94 (I) Old Clinton Road (0.6 miles E) 0.022 1 0.013 (I) Indicator Station (C) Control Station l

I l

50

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

TABLE 8 1991 AVERAGE MONTHLY GROSS._DETA

~

CONCENTRATI0ES IN AIR PARTICULATES Indicator, pC1/m 3 Control, pCi/m 3 M9 nth (Averace 2 s.d.) (Averace 2 s.d.)

Januacy C.028 i 0.011 0.028 1 0.012-February 0.023 i 0.008 0.023 1 0.007 March 0.021 1 0.009 0.021 t 0.011 April 0.015 0.006 0.016 i 0.006 May 0.015 0.006 0.017 0.006 June 0.018 0.007 0.019 i 0.007 July 0.021 1 0.009 0.023 0.009 August 0.025 0.010 0.026 0.012 i September 0.020 0.007 0.020 1 0.007 October 0.019 0.010 0.020 0.011 l

November 0.026 0.014 0.027 0.020 l

l December 0.025 1 0.009 0.026 i 0.009 f

l 1

51 I

l

e PREOP INDICATOR O PREOP CONTROL A "

O.040 - 1991 INDICATOR-x 1991 COtRROL 0

/

l 0.035 -

R c.

ll d 0.030 -a s

N ** *

/-

Q N E 0.025 -

"N / /

2 \ 'e M' '

\ /

o ,/ ~~ ,

l 0.020 -

's' <y N

\

0.015 -

0.010 - '- J 2- -J 1-JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC MOtRH FIGURE 9: AIR PARTICULATE GROSS BETA ACTIVITY COMPARISON

D. Acuatiq_Monitorina The Clinton Power Station utilizes an artificial lake as the source of cooling water and returns the used cooling water to the same lake while most nuclear power stations use once-through flow from a river, the ocean or a body of water ncach larger than Clinton Lake. When radioactive liquid effluents are discharged from the Clinton Power Station into the cooling water outfall, radioisotopes with long half-lives could build up as the same wate; is reused on successive trips through the plant. This water tra/cls from the plant, into the eastern arm of the lake, thnn into the northern arm of the lake and back into the plant. Although the only user of Clinton Lake as a source of drinking water is the Clinton Power Station, the lake is a major recreational facility, used for fishing, swimming, water skiing, boating and hunting.

Clinton Lake constitutes the primary environmental exposure pathway for radioactive materials in liquid effluents. Aquatic monitoring provides for the collection of fish, shoreline and bottom sediments, and periphyton samples to detect the presence or any radioisotopes related to operation of the Clinton Power Station. These samples are analyzed for naturally occurring and man-made radioactive materials. Both indicator and control locations were sampled during 1991. Indicator samples were taken from various locations on Clinton Lake and the control samples were taken at Lake Shelbyville which is approximately 50 miles south of Clinton Power Station. .

Aquatic monitoring samples are collected by the personnel from the Field Biology Laboratory of the Environmental Affairs Department of Illinois Power Company.

Fish Samples of fish are collected from Clinton Lake and Lake Shelbyville. In both lakes the samples include largemouth bass, crappie, carp and bluegill. These species are the fish most commonly harvested frem the lakes by sportsfishermen. Fish ingest sediments during bottom feeding, or prey on other organisms which ingest sediments or otherwise retain radionuclides. Radiological analyses of these fish samples provide infornation on the potential ingestion of radionuclides by humans via the 1

55

I aquatic pathway. These samples are collected semiannually and analyzed by gamma spectroscopy. -

The results of gamma isotopic analysis on the fish J samples showed the presence of naturally occurring K-40 in all 1991 samples ranging from 2.22 to 3.02 ,

pC1/g (Vet) . Preoperational K-40 concentrations ranged from 1,71 to 4.61 pCi/g (wet). All other analytical results were less than the lower limit of detection (LLD) for each radionuclide. I Shoreline Sediments Samples of shoreline sediments are collected at six locations from Clinton Lake, at one location from the Clinton power Station lower settling pond '

1 and at one location from Lake Shelbyville.

Radiological analyses of shoreline sediments 1 provide information on the potential shoreline exposure to humans and for determining long term 3 trends and accumulation of long-lived radionuclides in the environment. Samples are collected semiannually and analyzed for gross beta, gross alpha, Sr-90 and gamma isotopic f

activities.

Shoreline sediment samples are dried prior to analysis _and the results are reported in pCi/g dry weight. Naturally occurring radioisotopes, such as K-40, Ra-226 and Pb-212, were present in samples taken at both indicator and control locations. Two fission products, Sr-90 and Cs-137, were detected in samples from indicator locations. Sr-90 was detected in 2 samples and Cs-137 was detected in 5 samples. No fission ;

products were detected at the control location.

The activity detected was not substantially different from that measured during the preoperational program.

Preoperational Range 1991 Range (DCi/c drv) (pCi/c drvi i

Sr-90 0.009 to 0.087 0.007 to 0.043 Cs-137 0.015 to 0.045 0.016 to 0.048 l The presence of these fission products is attributed to previous nuclear weapons testing and l

atmospheric fallout from the accident at l

Chernobyl.

l L

l

~

56 l

L - - -

. . _ _ . . _ _ _ _ __ . , m. . _ _ . _ _ _ _ . _ . _ _ _ _ _ _ _ . _ __ _ _ . _

Gross alpha activity in samples of shoreline sediments collected from all locations ranged from 2.9 to 8.5 pCi/g (dry) during 1991. This activity was attributed to naturally occurring radium isotopes and decay products present in soil. These values compare closely with the activity detected in the preoperational program which ranged from 3.8 to 8.0 pCi/g (dry).

Gross beta activity in samples of shoreline sediments collected from all locations ranged from 5.9.to 9.6 pCi/g (dry) during 1991. The majority of this activity was attributed to naturally occurring K-40. These values are comparable with the activity detected in the preoperational program which ranged from 7.0 to 17.2 pCi/g (dry).

Bottom Sediments Samples of bottom sediments are collected from Clinton Lake at six locations and Lake Shelbyville at one location. Radiological analyses of bottom sediments primarily provide information about the amount of radionuclides available to predators who feed on the organisms found in bottom sediments.

Samples are collected semiannually and analyzed for gross beta, gross alpha, Sr-90 and gamma isotopic-activitie.a.

2 Bottom sediment samples are dried prior to analysis and the results are reported in pCi/g dry weight. Naturally occurring radioisotopes, such as K-40 and Pb-212, were present in all 1991 control and indicator sample locations. .

Fission products, Cs-137 and Sr-90 were detected in samples from indicator and control locations.

Preoperational Range 1991 Range (oCi/c drv) (DCi/c dry)

Sr-90 0.011 to 0.056 0.007 to 0.025

- Cs-137 0.008 to 1,39 0.017 to 0.590 The presence of these fission products is attributed to previous nuclear weapons testing and atmospheric fallout from the accident at Chernobyl.

Gross alpha activity in samples of bottom sediments collected from both lakes ranged from 5.0 to 14.7 pCi/g (dry) during 1991. This activity was attributed to naturally occurring radium isotopes and decay products present in 57

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

soil. The preoperational gross alpha activity >

ranged.from 4.4 to 14.7 pCi/g (dry).

Gross beta activity in samples of bottom sediments collected from both lakes ranged from 8.4 to 30.1 pCi/g (dry) during 1991. The majority of this activity was attributed to naturally occurring K-

40. The preoperational gross beta activity ranged from 8.3 to 27.7 pCi/g (dry).

Anuatic Vecetation (Eerinhvtoni Samples of periphyton are collected from five locations in Clinton Lake and one location in Lake Shelbyville. Periphyton (attached algae) are i collected from the submerged surface of the permanently anchored buoys. Periphyton absorb trace elements and radionuclides directly from 1

water, often concentrating them to levels much higher than the dilute concentrations that occur ,

in the aquatic environment. This is because most algae are coated with a carbohydrate jelly and have a large surface to volume ratio. Cell division usually occurs once every one or two days and, as a result, half of the cell wall is a new surface for sorption. Periphyton represent one of the earliest links in the food chain and provide I information about the amounts of radionuclides available to predators further up the food chain.

Samples of periphyton are collected every two months between April and October (during the colder months growth is limited) at the indicator locations and semiannually at the control location and analyzed by gamma spectroscopy, i The results of the gamma isotopic analyses on periphyton samples showed the following concentrations of naturally occurring radioisotopes:

Preoperational Range 1991 Range (nci/c wet) fpCi/a wet)

-Be-7 0.38 to 1.07 0.21 to 1.62 K-40 0.74 to 6.82 0.69 to 3.12 one fission product, Cs-137, was detected in several periphyton samples. Concentrations for Cs-137 in 1991' ranged from 0.022 to 0.079 pCi/g (wet). Preoperational results for Cs-137 showed- !

l concentrations ranging from 0.042 to 0.15 pCi/g (wet). The presence of Cs-137 is attributed to previous nuclear weapons testing and atmospheric fallout from the accident at Chernobyl.

58 1

j

s Periphyton analyses are. included in the Clinton Power Station Environmental Monitoring Program ,

because;of their sensitivity to the presence of radionuclides in the aquatic environment due to .

bio magnification. Periphyton provides good !

qualitative information, however,-there are

-quantitative limitations. " ming periphyton as biomonitors for radionuclidus in aquatic systems ;

can be a highly sensitive and qualitatively effective means of environmental monitoring around nuclear power plants that release radioactive effluents to aquatic systems. It enables the Radiological Environmental Monitoring Program to determine the relative presence of-radioactivity before it becomes a problem.

E. Terrestrial-Monitorinc In addition to the direct radiation, radionuclides

present in the atmosphere expoco individuals when these radionuclides deposit on surfaces (such as plants and soil) and are subsequently ingested directly by man or indirectly by consumption of animal products such as meat and milk. To monitor this food pathway, control and indicator samples of green leafy vegetables, grass, milk (control only) and meat (indicator only) are analyzed.

Surface soil samples are collected and. analyzed at three-year intervals (triennially) to monitor the potentialibuildup of atmospherically deposited radionuclides.

Surface vegetation samples are collected from a number of locations for the purpose of monitoring the potential buildup of atmospherically deposited radionuclides. Because the radionuclides of interest, with respect to the_Clinton Power Station operations,-are also present in the environment as a result of several decades of worldwide fallout or because they are naturally occurring, the presence of these radionuclides is expected in all of the samples collected.

The possible contributions of radionuclides from the operation of theLClinton Power Station are assessed by comparing the results-of samples collected in prevalent downwind locations (north to northeast of the plant) with control samples and samples collected in locations generally upwind of the' plant. In addition, the results of samples collected during 1991 were compared with the results of samples collected during the preoperational program.

59 ,

In addition to naturally occurring radioisotopes, a Sr-90 and Cs-137 were found in a number of 1991 samples. However, the concentrations of radionuclides in samples collected near the Clinton Power Station were comparable to the concentrations in samples collected at locations remote from the station. The presence of these fission products is attributable to previous nuclear weapons testing and fallout from the accident at Chernobyl. The operation of Clinton Power Station haa no measurable contribution to the radioactive concentration of the terrestrial environment.

Milk -

There is no known commer;ial production of milk for human consumption within a five-mile radius of the Clinton Power Station. iilk samples are collected from a dairy located about 14 miles west '

southwest of the station (twice a month during May through October and once a nonth during November through April). These samples are analyzed for I-131, Sr-90 and gamma isotopic activities.

The results of the analyses showed positive concentrations of K-40 and Sr-90 in all 1991 samples with a range of 1070 to 1440 pCi/l for K-40 and 1.0 to 4. 8 pCi/l for Sr-90.

Preoperational activity of K-40 in milk ranged from 706 to 1375 pCi/l. Strontium-90 (Sr-90) analysis in milk was added to the REMP in nctober of 1987. These results ranged from 2.3 tr 2.5 -

pCi/1. I-131 was not detected in any milk sample obtained during 1991. Figure 10 presents the Sr-90 results graphically.

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s x . ~. y 0 1-30 2-27 3-27 4-24 %8 S-22 6-3 6-19 7-3 7 - 17 7-31 8 - 14 8-29 9-11 9-25 10-4 % 23 '1-28 12 - 25 Date FIGURE 10: STRONTIUM-90 ACTIVITY IN MIIX t

l

1 i

Grass In addition to milk samples, grass samples are collected at four indicator locations and at one control location. These samples are collected twice a month during May through October and once '

a month during November through April. These '

samples are analyzed for gamma isotopic activity including I-131.

The results of the analyses showed naturally occurring Be-7 and K-40 in all 1991 samples. Two indicator samples showed the presence of Cs-137 in 1991.

Preoperational Range 1991 Range (oCi/a vet) (DCi/c wetl Be-7 0.22 to 14.0 0.12 to 9.81 K-40 0.22 to 14.5 0.84 to 9.52 Cs-137 0.017 to 0.085 0.023 to 0.029 ,

The presence of fission product Cs-137 is attributed to fallout from nuclear weapons testing and the Chernobyl accident.

I-131 was not detected in any grass sample ;

obtained during 1991.

Vecetables The Clinton Power Station obtains samples of cabbage, lettuce and swiss chard from two indicator locations and at one control location.

The indicator locations are located in the sectors with the highest potential for surface deposition and the control location is in a sector and at a distance which is considered to be unaffected by plant operations. Samples are collected once a month during the growing season (June through September) and analyzed for gross beta and gamma isotopic activities including I-131.

Fourteen out of thirty-six vegetable samples were not available for collection in 1991 due to consumption by wildlife and hot, dry weather during the growing season. The swiss chard potting plants which were planted at indicator location CL-115 were eaten by deer from the deer population which inhabits the areas around Clinton Lake. . Attempts to grow swiss chard from seed to replace the swiss chard that was eaten were unsuccessful. Lettuce and cabbage were not available for sampling in the late summer period 63

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

due to insufficient plant growth to accommodate l sampling throughout the growing season. The lack of growth was attributed to hot, dry weather during key portions of the growing season.

The results of the gamma isotopic analysis showed

naturally occurring K-40 and Be-7. K-40 was found in all 1991 samples ar.d Be-7 was fcund in eight samples, one indicator sampled showed the presence of Cs-137 in 1991.

Preoperational Range 1991 Range (DCi/c wot) (nCi/c wet)

Be-7 0.082 to 0.69 0.080 to 0.24

.K-40 1.45 to 7.00 1.91 to 5.60 Gross Beta 0.87 to 8.80 2.1 t a 7.1 Cs-137 0.006* 0.007*

Cs-137 was detected in on)f one preoperational sample and in only one sample in 1991.

The presence of fission product Cs-137 is attributed to fallout from nuclear weapons testing and the Chernobyl accident.

I-131 was not detected in any vegetation sample i during 1991.

Meat As an additional check on-the presence of radioactive materials in terrestrial exposure pathways, the Clinton Power Station environmental group collects annual samples of-beef liver, beef i thyroid and ground beef from an animal raised near '

the Clinton Power Station. -These samples are analyzed for. gamma isotopic activity including I-131.

The results of the gamma isotopic analysis showed only naturally occurring K-40 in the ground beef, liver and thyroid'at 2.02, 2.49 and 1.67 pCi/g )

(wet) respectively. Preoperational activity ranged from 1.95 to 2.78 pCi/g (wet). I-131 was not detected in the meat samples during 1991.

Soil l

l Soil samples adjacent to air sample stations are collected triennially from eight indicator locations and one contrrl location. The samples l

64 l

- - . _._.s

are collected to monitor 'he potential buildup of atmospherically-deposited radionuclides. One soil sample is collected annually from the area where Clinton Power Station land applies processed sewage sludge from the Clinton Power Station Sewage Treatment Plant. This sample is collected to ensure radionuclides attributed to the operation of.Clinton Power Station are not being

-land applied with the processed sewage sludge.

All soil samples are analyzed for gross beta, ,

gross alpha and gamma isotopic activities.

Soil samples are sifted to remove any stones or debris and then dried. The results of the gross beta activity ranged from 19.8 to 26.6 pCi/g (dry). Gross-alpha activity ranged from 7.8 to 16.8 pCi/g-(dry).- Gamma isotopic activity indicated several: naturally occurring isotopes, such as K-40,- Ra-226, Pb-212 and one fission product, Cs-137. Cs-137 concentrations ranged from 0.015 to 1.030 pCi/g (dry).

Preoperational Range 1991 Range (DCi/a drvi ( DC i./_c d rv)

Gross Beta 17.7 to 24.7 19.8 to 26.6 Gross Alpha '

6.2 to 10.4 7.8 to 16.8 Cs-137 O.14 to 0.40 0.015 to 1.030 The' presence of Cs-137 is attributed to previous nuclear weapons testing and atmospheric fallout from the accident at Chernobyl. ,

F. Water Monitori.DS Section 2.4 of the Updated Safety Analysis Report (USAR) for the Clinton Power Station provides a technical description of the-geologic and hydrologic conditions in the vicinity of the Clinton-Power Station, and the locations of public and private wells. Each year during the performance of the Annual Land Use Census, the Illinois State Water Survey of fice is contacted to -

-determine if any new wells have been drilled within 5.0 miles of the Clinton Power Station which are not referenced in Section 2.4 of the USAR. The most rapid vertical diffusion of surface water into the sub-surface aquifer supplying local wells is about 10.5 feet per year.

The only identified user of water from Clinton Lake for domestic purposes is the Clinton Power Station;-all others potentially exposed to any radioisotopes released into surface or ground water would not be affected for several years.

65

i Water monitoring provides for the collection of drinking water, surface water and ground water (well water), samples to detect the presence of.

any radioisotopes related to the operation of the Clinton Power Station. Both indicator and control locatione were sampled during 1991. These samples were analyzed'for naturally _ occurring _and man-made radioactive isotopes. Average tritium and gross J beta concentrations-in surface, drinking and well ;

water are presented in Table 9 and Table 10.

Drinkina Water

-The Clinton Power Station domestic water system is the only known direct user of water from Clinton Lake for human consumption. A composite water sampler located in the Service Building collects a small, fixed volume sample at hourly intervals.

The sampler discharges each sample into a common sample collection bottle. Therefore, the monthly sample analyzed by the contracted laboratory service is a composite of the individual samples collected throughout the month. The monthly composite sample is analyzed for gross alpha, gross beta and gamma isotopic activitien. A portion of each monthly sample is mixed with the other monthly samples collected during each calendar quarter. The quarterly composite sample is analyzed for tritium.

Gross alpha-activity was detected in two samples

and ranged from 0.3 to 0.4 pCi/1. This activity is attributed to naturally occurring radioisotopes, such as U-238 and Ra-226, suspended as fine sediment particles in water.

I Gross beta activity ranged from 1.3 to 2.6 pCi/1.

These levels are attributed to very fine particles of sediment containing K-40 which are not removed during the chlorination and filtration process.

Monthly-drinking water _ gross beta concentrations are presented in Figure 11.

66

10

-m- 1991 ACTMTY

-+- PREOP ACTMTY 8

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FIGURE 11: DRINKING WATER GROSS BETA ACTIVITY COMPARISON

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

Specific gamma-emitting radioisotopes were all below the lower limits of detection. Specific searches were made for activated corrosion '

products (manganese-54, iron-59, cobalt-58, cobalt-60 and zinc-65) and fission products (niobium-95, Zirconium-95, cesium-134, cesium-137, barium-140 and lanthanum-140).

The results of all analyses for tritium were less than the lower limit of detection.

These results show no measurable effects on drinking water resulting from operation of the Clinton Power Station during 1991.

Surface Water Composite water samplers are installed in three locations to_ sample surface water from Clinton Lake. There samplers collect a small volume of water at regular intervals and discharge it to a large sample collection bottle These bottles are collected monthly. One of the composite samplers is located upstream from Clinton Power Station and is unaffected by_ plant ' quid releases downstream.

The two other composite samplers are positioned at the locations most likely to be affected by plant operations (one samples the intake water to the Circulating Water Intake S*ructure and the other samples the water at tt.s start of tae plant discharge flume). Monthly grab samples are collected from two indicator locations and one control location on Clinton Lake. One additional indicator sample is obtained from the Clinton Power Station lower settling pond.

Surface water samples are analyzed for gross beta,

. gamma isotopic and tritium activities. Additional analyses for gross alpha activity are-performed on the upstream water samples, Additional analyses for gross alp'.a activity and I-131 actielty are performed on water samples taken from the discharge flume. Tritium analyses are performed monthly on samples from the lower settling pond, the intake structure water samples and the upstream composite water samples, and quarterly from composites of monthly samples at the other locations.

The 1991 results of the gross beta analyses ranged from 1.0 to 6.0 pCi/l at the indicator locations and 1.3 to 3.9 pCi/l at the control location.

Preoperational gross beta uctivity ranged from 1.1 to 7.6 pCi/1. Thele results are attributed to 69

naturally occurring K-40 suspended as fine sediment particles in water. Other types of samples have confirmed the presence of K-40 in Cllnton Lake " 'ine and bottom sediments.

Monthly surface water gross beta activity for the control and indicator locations are presented graphically in Figure 12.

Tritium analyses performed on samples indicated one sample with a concentration of 216 pCi/1. All other concentrations were less than the lower limit of detection. The preoperational tritium concentrations ranged from 220 to 330 pCi/1. As noted in reference (EI87), previous nuclear weapons testing increased the pre-1960 levels of tritium (6-24 pCi/1) by a factor of approximately fifty (300-1200 pCi/l). Since the level of tritium reported in the one positive sample fell in the low end of the existing, non-reactor-related, natural inventory of tritium, it is considered this positive result is not associated with operation of the Clinton Power Station.

Specific gamma-emitting radioisotopes were all below the lower limits of detection. Specific searches were made for activated corrosion products (manganese-54, iron-59, cobalt-58, cobalt-60 and zinc-65) and fission products (niobium-95, zirconium-95, cesium-134, cesium-137, barium-140 and lanthanum-140). No I-131 was detected in any surface water sample during 1991.

Gross alpha activity was detected in approximately half the surface water samples analyzed for gross alpha. The 1991 results ranged from 0.6 to 1.8 pCi/1. Preoperational gross alpha activity ranged from 1.3 to 1.9 pCi/1. These results were attributed to naturally occurring radioisotopes, such as U-238 and Ra-226, suspended as fine sediment particles in water.

These results show no measurable change in radioactive material concentration in surface water due to operation of the Clinton Power Station during 1991.

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Every two wooks samples are collected from tho ;

well serving the Villago of DeWitt (both treated i and untreated samplos are obtained) and frem a l l Voll serving the Illinois Dopartment of Conservation at the Mascoutin Stato Rocreational j Area. Each sample is analyzed for I-13;, All j samples drawn from the same well during a particular month are combined and analyzed for gross alpha, gross beta and garcma isotopic j activition. In addition, a portion of each !

monthly composito is added to the quarterly T composito samplo and is analyzed for tritium.

I The 1991 results of the gross bota analysos ranged from 0.9 to 4.0 pCi/1. Prooperational gross beta ;

activity ranged from 1.1 to 5.1 pCi/1. The gross

, beta activity was attributed to naturally occurring K-40 suspended as fine sediment particloa in water. Monthly well water gross bota activity is presented graphically in Figure 13. ;

Gross alpha activity was detectoi in two well water samplos in 1991 and ranged from 0.3-to 0.9 pCi/1. Preoperational gross alpha activity ranged from 0.9 to 1.8 pCi/1. These resultu were attributed to naturally occurring radioisotopos, such as U-238 and Ra-226, sucponded as fine sediment particles in water.

Specific gamma-omitting radioisotopes were all 4 below the lower limits of datoction. Specific ,

cearches were made for activated corrosion products (manganeco-54, iron-59, cobalt-58, .

I cobalt-60 and zine-65) and fission products (niobium-95, zirconium-95, cosium-134, cosilm-137, ,

" barium-140 and lanthanum-140). Tritium and I-131 were not detected in any well water samples taken

during 1991.

These results show no measurable change in :

radioactive material concentration in well water +

resulting from operation of the Clinton Power Station during 1991. ,

i I

73

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1991 TPJTIlfli_QQ1{p111IB&IlgNNJ ;

IN DRIFIIRGe Fl!BEACl lND WE R _MTIE t

fttation DescrintiQn DCi/1 )

Drinkinc Water CL-14 (I) CPS Service Building <LLD l Su r f a cg.,_W_p t e r J'L e- (I) DeWitt Road Bridge <LLD CL-10 (C) Ill. 48 Bridge <LLD CL-13 (I) Salt Creek (below dam) <LLD

- CL-90 (I) CPS Discharge Flume 216a CL-91 (I) Parnell Boat Access <LLD l CL-92 (I) CPS Intake Screenhouse <LLD CL-93 (I) CPS Settling Ponds <LLD Well WateI CL-7D (1) Mascoutin State Recreation <LLD Area >

CL-12 (I) DeWitt Pump Station <LLD Treated .

CL-12 (I) DeWitt Pump Station <LLD Untreated

Based on detectable activities only 3

(C) Control l (I) Indicator a Comp'osite Sample L

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2 991 AVERhGE GROJ_gl _DhCONCIN_T1%T10_RQ

.ULDRI) MING , SURFAqp_hFD WJlJ4L WATER ;

Average i 2 s.d. !

E10 tion Descrintion JDCi/11*

Drinkina Watgr CL-14 (I) CPS (Service Building) 2.1 i 0.8 Surface Water CL-9 (I) DeWitt Road Bridge 2.6 i 1.4 CL-10 (C) Ill. 48 Bridge 2.5 1 1.3 CL-13 (I) Salt Creek (below dam) 2.6 i 1.1 CL-90 (I) CPS Discharge Flume 2.8 i 0.8 CL-91 (I) Parnell Boat Access 2.6 1 2.4 CL-92 (I) CPS Intake Screenhouse 2.8 1 2.1 CL-93 (I) CPS Settling Ponds 3.0 I 1.9 ,

, Well Water i

l CL-7D (I) Mascoutin State Recreation 1.3 0.8 Area CL-12 (I) DeWitt Pump Station 2.8 i 1.2 Treated I

CL-12 (I) DeWitt Pump Station 2.3 i 1.4 Untreated

Based on detectable activities only (C) Control

.(I) Indicator 78

l C.- Quali__ty Asnurance Proar_03 To establinh confidence that data developed and reported are accurate and precise, all REMP activities are incorporated into the Illinois Power Company Quality Assurance (CA) program of audits and surveillances. The Quality Assurance

program requirest i

Participation in intercomparison programs, such as the EPA crosscheck program.

I An annual audit of the analysis laboratory functions and facilitics, i i :

Biennial review of the Clinton Power Station l

procedures specifying sampling techniques.

I Duplicate analysis of every tenth sample This i assayed (not including TLDs).

requirement is to check laboratory precision.

t The routino counting of quality control I samples. Approximately ten percent of the I total number of counto performed are to be quality control counts.

The analytical results provided by the laboratory .

were routinely reviewed by the Radiological Environmental Group of the Radiation Drotection Department to ensure the required minimum !

sensitivities have toen achieved and the proper analyses have been performed.

Toledyne Isotopes Midwest Laboratory (TIML) participates in the Environmental Protection i

Agency crosscheck program. The TIML participant code-in the crosscheck progran is CA.

Participation in this program provides assurance that the laboratory is capable of meeting widely-accepted criteria for radioactivity analysis.

TIML correctly analyzed 96% of the U.S. EPA crosscheck sampics and 97% of in-house spiked sampics. These results indicate that TIML is capable of routinely performing high quality -

analysis on environmental samples.

t Results of the 1991 crosscheer. program and other in-house quality programs are shown in Appendix E.

i l 79 I

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H. C.blingos to the REMP Durinet 1991 Occasionally changes to the Radiological l Environmental Monitoring Program are necessary to 1 improve the monitoring of the environmental :

exposure pathways. Those changes may result from items identified during the perforuance of the Annual Land Use census, revised or new regulatory requirements, Qu611ty Assurance audits or supplemental periodic and long-term sampling and analysos. l During 1991, the Annual Land Use Consus identified goats being milked for human consumption. Efforts are being made to establish a milk samplo location with the owner of the goats. This location Van n't established prior to the end of 1991. Thero ?

were no changes due to Quality Assuranco audits or regulatory requirements.

Three environmental TLD control samplo locations were added as improvements by the Padiological Environmental staff in 1991.

Changes that woro made and the reasons for the changes are listed in Table 11.

9 80 i-

l TAlM&_11 ,

CHANGES TO THE RERP DURING 2991 ,

1. June, 1991 Environmental TLD control samplo locations were

established at CL-95, CL-96 and CL-97. CL-95 is located 10.5 miles from CPS in the West sector. CL-96 is located 10.9 miles from CPS in the Southwest sector. CL-97 is

located 10.3 miles from CPS in the South-Southwest sector. !

These locations were added as I a program improvement to provido additional background ~

radiation information.

2. October, 1991 A milk samplo location was ;

identified but has not boon established as yet. The sample location will be 3.4 miles from CPS in the South- .

Southwest sector. This sample will bo established to satisfy the CPS Offsite Doso calculation Manual requirements which requires a ,'

milk sample be taken within 8 km of CPS when an animal ;

providing milk for human '

consumption is identified.

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f ANNL AL LAND USE CENSUS

1 IV. MIM M _ LAND USE CENSUS 2

A land use censur. is performed to ensuro that changes in the use of areas at and beyond the oito boundary are i identified and that modifications to the REMP are made, if required, by evaluation of the land uso concus, j r

The land uso census is performed to identity within a :

! distance of 5 miles, the locations in nach of the 16 3 meteorological sectors of the nearent milk animals, the nearest residence and the nearest gardon of greater than 500 square feet producing broad leaf vegetation.

i Also, the consus shall identify within a distance of 3 miles, the location in each of the 16 meteorological L sectors of all milk animals and all gardens of greater than 500 square feet producing broadleaf vegetation.

The 1991 Land I?se Consus was conducted during the growing season from July 29, 1991, through October 3, 1991, satisfying the CPS Offsite Doso Calculation Manual requirements. Over 210 residences were surveyed

.by either mail survey, telephone follow up, or direct

contact. Data for this report was obtained using the

, following means:

Performing door-to-door solicitation of one-half l nf the residences / land owners identified in the 1990 Annual Land Use Census and the 1991 plat of DeWitt County.

Soliciting the remaining half of the ,

I residences / land owners identified in the 1990 Annual Land Uso Consus by mail survey and telephone follow-up.

Driving along all ror.do within a five-mile radius and performing door-to-door solicitation of residences / land owners not identified by the 1990 report.

Contacting several state and local agencies.

The results of tha 1991 Annual Land Use Census were examined to ensure that the REMP will provide I representative measurements of radiation and radioactive materials in thosn exposure pathways and for those radionuclidos that lead to the highest potential radiation exposures to the general public resulting from the operation of the C]inton Power Station. Table 12 provides the nearest residence, garden and livestock / dairy animal in each of the 16 meteorological sectors within a 5-mile radius of the Clinton Power Station. Figure 14 graphically shows the information listed in Tablo 12.

83

U i

Based on the examination of the results from the 1991 Annual Land Use concus, one change is required to be made to the REMP.

Goats were found being milked for human consumption by a family within 5 miles of clinton Power Station.

Continued effort is being made to obtain milk sampics 4 for the PEMP from the family. As of the issuance dato of this report, sampling had not been initiated.

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Summary of Changes Identified in 1991 Annual Land Use Census Nearest Residence Three changes were identified for the nearest residence. The changes were attributed to new :

residence and ownership change. Changes in nearest ,

residence are shown below: l NNE Sector - Change in residence ownership at 0.9 '

, miles.

SSE Sector - Change in residence ownership at 1.7 miles.

WNW Sector - New residence established at-1.9 miles.

Jtearest Garden A total of 133 gardens were identified in the 16 sectors within a 5-mile radius of Clinton Power Station of which 31 produced broad leaf vegetation (spinach, lettuce, cabbage and chard) and were greater than 50m 2, In most cases, tomatoes, sweet corn and beans were grown in gardens identified.

Changes in census locations for the nearest garden were identified in 13 of the 16 sectors and are shown below:

1990 Census Location 1991 Census Location 2.0 miles NE 3.2 miles NE 2.5 miles ENE 2.7 miles ENE ,

1.5 miles E 2.4 miles E .

None identified 4.8 miles ESE None identified 4.9 miles SE !

None identified 2.6 miles SSE None identified 3.8 miles S 3.2 miles SSW 3.5 miles SSW 2.7 miles SW 4.0 miles SW 3.4 miles WSW 3.3 miles WSW 0.8 miles WNW 4.8 miles WNW t 2.2 miles NW 2.8 miles NW 2.3 miles NNW 4.4 miles UNW i Nearest Livestock / Dairy over 440 head of cattle were counted in the 16 sectors within a 5-mile radius of Clinton Power Station. The cattle were used for nursing (nursing of calves) and were being used for meat production. No milk cattle (for human consumption) were identified.

7 goats were identified during the land use census. Of these, 4 are being milked for human consumption, 85

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1 2

Negotiations with the owner are underway to provide milk samples for environmental monitoring.

Over 31,000 other farm animals in addition to the cattle identified were counted. Of these, 30,000 are i turkeys raised +'or commercial use. Of the remainder, i

the predominant species were chickens, hogs and sheep, changes in the census locations for the nearcst livestock / dairy were identified in 9 of the 16 sectors and are shown below:

1990 Census Location 1991 Censis Locatign 1.3 miles NNE 1.8 miles NNE 2.0 miles SSE 2.6 miles SSE l 3.0 miles S(T. Shinneman) 3.0 miles S(L. Disney) 3.2 miles SSU 3.5 miles SSW 3.7 miles SW 3.3 miles SW None identified 3.3 miles W 2.8 miles WNW 4.8 miles WNW 1.7 miles NW None identified 2.3 miles NNW 3.9 miles NNU

,TAEkE_l2

_1991 Al{NUALJAJ!D UPE CEESJE NEAREST NEAREST NEAREST DAIRY RESIDENCE GARDEN OR LIVESTOCK (in mitos) Lin_nflesl. _(in miles)

, DIPECTION N 0.9 0.9 0.9 NNE 0.9 2.0 1.8 NE 1.2 3.2 3.5 ENE 2.5 2.7 4.6 E 1.1 2.1 3.1 ESE 3.2 4.8 a SE 2.9 4.9 2.9 SSE 1.7 2.6 2.6 S 3.0 3.8 3.0 SSW 3.0 3.5 3.5 SW 0.8 4.0 :4 . 3 WSW 1.5 3.3 3.4 W 1.5 2.3 3.3 WNW 1.9 4.8 4.8 i NW 1.6 2.8 a l NNW 1.6 4.4 3.9

! a No dairy or livestock within 5 miles of CPS in this

meteorological sector.

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GARDEN (G), AND MILK ANIMAL (M) WITIIIN 5 MILES 87 M ,02349C 3-8-91

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METEOROLOGICAL MONITORING

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

4

v. M RIEREQLQ G IC AL_cJlhBACIERIAJ_LCA A. DesgIlption The climate of central Illinois is typical of the Midwest, with cold winters, warm summers and frequent short-period fluctuations in temperature, il humidity, cloudiness and wind direction. The variability in central Illinois climate is due to its location in a confluence zone (particularly during the cooler months) between different air masses. The specific air masses which affect central Illinois include maritime tropical air which originates in the Gulf of Mexico; continental tropical air which originates in Moxico and the southern Rockies; Pacific air which originates in the eastern North Pacific Ocean; and continental polar and continental arctic air which originates in Canada.

Monthly streamline analyses of resultant surface winds suggest that air reaching central Illinois most frequently originates over the Gulf of Mexico '

from April through August, ever the southeastern United States from September through November, and over both the Pacific Ocean and the Gulf of Mexico from December through March.

The major factors controlling the frequency and variation of weather types are determined by the movement of storm systems which commonly follow paths along a major confluence zone between air masses. The confluence zone is usually oriented ,

from southwest to northeast through the region and normally shifts ir latitude during this period, ranging in position from the central states to the i United States - Canadian border. The average frequency of passage of storm systems along this zone is about once Every 5 to 8 days. These storm systems are most frequent during the winter and spring months, causing a maximum of cloudiness i during these seasons. Winter is characterized by alternating periods of steady precipitation and periods of clear, crisp and cold weather.

i Springtime _ precipitation is prinarily showery in nature. The frequent passage of storm systems,

- presence of high winds, and frequent occurrence of unstable conditions caused by-the close proximity-between varm, moist air masses and cold, dry air masser., result in this season's thunderstorms and i

1 89

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

on occasion, are the source of hail, damaging winds and tornados. Although storm systems also occur during the fall months, the frequency of !

occurrence during these months is less than that of the winter or spring months. Periods of dry ;

weather characterine the fall season which ends rather abruptly with increasing storminess that usually begins in November.

In contrast, weather during the summer months is ,

characterized by weaker storm systems which tend '

to pass to the north of Illinois. A major confluence zone is not present in this region, and the region's weather is characterized by much sunshine interspersed with thunderstorms. Showers t and thunderstorms are usually of the air mass type, although occasional outbreaks of cold air bring precipitation and weather typical.of that 4 associated with the fronts and storm systems of the spring months.

t When southeasterly and easterly winds are present in central Illinois, they usually. bring mild and wet weather. Southerly winds are warm and ;

showery, westerly winds are dry with moderate <

, temperatures, and winds from the northwest and north are cool and dry.

The prevailing wind is southerly at the Clinton Power Station. The frequency of winds from other directions is relatively well distributed. The monthly average wind speed is lowest during late summer and highest during late winter and early spring.

Table 13 presents a summary of climatological data at meteorological stations surrounding the Clinton Power Station site from 1939 through 1990.- The i annual average temperature at the Clinton Power Station is about 52*F. Monthly average temperatures in the region range from the low to middle twenties in January to the middle seventies in July. Maximum temperatures in the Clinton Power Station region equal or exceed 90*F on an average between 20 and 30 times per year. Minimum temperatures in this region are less than or equal L to 32*F on an average between 117 and 129 times per year. -

l l

Ilumidity varies with wind direction, lower with westerly or northwesterly winds and higher with easterly or southerly winds. The early morning '

relative humidity is highest during the late summer, with an average of 83% at both Peoria and 90 /

<a l

Springfield. The relative humidity is highcot throughcut the day during December, ranging from 83% in early morning ta 71% ac noon at both Peoria and Springfield. Heavy fog with visibility less than 1/4 mile occurs an average of 21 times per year at Peoria and 17 times per year at Springfield. Heavy fog occurs most frequently during the winter months.

Annual precipitation in the Clinton Power Station area averages about 34 inches per year. On the average, about 53% of the annual precipitation in the Clinton Power Station region occurs in the 5-month period from April through August.

However, in this region no month averages less than 4% of the annual total. Monthly precipitation totals have ranged from 0.03 to 13.09 inches (Peoria). Snowfall commonly occurs from November through March, with an annual average of 24.7 inches at Peoria, and 22.7 inches at Springfield.

The monthly maximum snowfall at Peoria was 24.7 inches in January of 1979 while in Springfield 22.7 inches was received in December of 1973. The 24-hour maximum snowfall occurred in January of 1979 in Peoria which received 12.2 inches. In ,

December of 1973 Springfield received its maximum 24-hour snowfall with a snowfall of 10.9 inches.

The terrain in contral Illinois is relatively flat and differences in elevation have no sigt.ificant impact on the general climate. However, the low hills and river valleys that exist cause a small effect upon nocturnal wind drainage patterns and fog frequency.

D. ClimatqJoqical Summarv - 1991 Temperatures in Springfield for the months of January, July, September, October and November averaged below normal while February, March, April, May, June, August and December averaged above normal. Over the year, the average monthly temperature ranged from 24.0*F in January to 75.6'F in June. The lowest hourly temperature of the year occurred on January 31 and November 8 when it dropped to l'F. On August 2, 96*F was recorded, narking the year's highest hourly temperature. (IPC91) 91

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

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

t 1AEld !

' Plt 10elfAL CLl>A10 LOGICAL DATA FPt*8 41AfMER !

11Afl0NS $Uet0VNDING fFf ClINTON POW [t 5fAfION I

,,1147104 $

PatAMETf4 Ptte t A $P91NcrittD i

Tevereture (*F) ,

i Annual avera;e $0,4 $2.6 I Maxleun 105 (Jme 1988) 112 (Jul 1956)

Minipun *25 (Jan 1977) +22 (feb 1963) :

Pelative Htridity (%) .

Annual average at:

6 a.m. 83 83 12 noon 61 61 i hI51 l

Annual average speed (n@) 10,.0 11.2 Prevailing direction $ $sw r Maxie.m Winds f astest obs.1 Min (pph) 45 (Nov 1938) 46 ( Apr, Nov 1988)

Direction 11W WSW Peak Gust (eph) 69 (Apr 1989) 69 (Aug 1987)

Direction N W Pre:foltation (In.)

Annual' average 34.89 33.78 Monthly maxinun 13.09 ($ep 1961) 10,76 (Jul 1981)

Monthly mininun 0.03 (Sep 1979) Trace (Sep 1979) 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months maxinua 5.06 (Apr 1950) 6.12 (Dec 1982)

inewfall (in.)

r Annual average 25.1 23.9 Monthly maxinun 24.7 (Jan 1979) 22.7 (Dec 1973) 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months maxinun 12.2 (Jan 1979) 10.9 (Dec 1973) mean Annual (no. of dov11 Precipitation 1 0.01 in. 113 113

_ Snow, sleet, hait 1 1.0 in.. 8 -- 8 i

Thunderstorms 48 48

! Heavy fog (visibility 1/4 m. or less) 21 17 b l- Maxinua tenperature 190'F 20 30 Minipun tenperature 5 32'T 129 117 l

l >

1 c

! 92 y

_ _ . . . _ _ . _ __._. . - . _ . . _ _ . . . .._..~..____________._~_.._.._.m.-_....m._ , . _._ m _ _

t, J

t Taptt 13 (continued) ,

i i

The date presented in this table are taased upon references (DOC 90a) aruf (Dor 6 0t.2, 1bese !

statistics are based on periods of record ranging f rom 7 to 51 years in length. The ranges span the '

years 1937 to 1990, ,

I i

i i

r t

e i:

6 A

b I

I I

93

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

- ~ - _ . - _ . _ - -

4

{

s In Springfield a total of 37.91 (water _ equivalent)

inches of precipitation fell during 1991, which ,

amounts to approximately 4.13 inches above the annual average. Monthly precipitation totals i

ranged from a low of 0.71 inches in February to a r i high of 6.41 inches in October. The largest '

precipitation event came on October 4 when 3.24 inches of rain fell. 1. 4 inches of snowfall van received in Springfield in 1991 with the year's heaviest snowfall occurring on January 25 when 3.2 inches fell. (IPC91) ,

o The onsite meteorological tower obtains information that is valuable in determining plume dispersion by providing differential tenperature, ;

wind speed and direction. Table 14 summarizes the seven stability classes, with unstable conditions dispersing a plume more than stable conditions.

Table 15 compiles the total hours for different wind speeds for each stability class during 1991, at 10 meters and 60 meters. Figures 15 and 16 arc wind rose graphs which show predominant wind ,

i direction at 10 and 60 meterc for the Clinton Power Station. i During 1991, an error was discovered in the data provided by the onsite meteorological tower. -

Indications were that for days when solar radiation was at a maximum, i.e., sunny, the "A" Pasquil Gifford stability class was present a higher than normal percentage of the time. Upon investigation, the cause of the problem was determined to be inadequate aspiration of the 10 meter temperature indicator. Atmospheric stability class at CPS is deternined by the temperature difference between the 60 meter and the 10 meter instrumentation. This error resulted in a skewing of the data towards the "A" stability class end of the range. The problem has been corrected and the meteorological tower now yields accurato data for atmospheric stability class determination. The information provided in Table 14 has not been corrected and will be biased I

towards the "A" stability class.

'l 94 I

l' Ell M CLA$$1FICAT]CN Of A1MO$Pu(QjC $fApl({TT Stability Pasquill Defining ClessiNestion Catecerles C ondi t i on1 Extremely unstable A 0.900(415-0.019 Maderately unstable B 0.019<ats-0.017 Slightly unstable C 0.017<a15-0.015 heutral D -0.015<61s-0.005 Slightly stable t -0.005<Afso.015 Moderately stable F 0. 0 t S <at s 0. D40 Extremely stable G 0.040<Afs0,900 95

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

I e

IA.g(L,11 f 3 AWJAL J0thi HEDUENEY 0!$1Rj.90fl0W OF t'UEORot001EAL Pa# Auf f tet DuatWC 1991 >

$fa9fttfY CLAff A WIND SPEED twow) AT 10 stito LEVEt DIRECfl0N 13 47 8 12 iti8 19 % >?4 TOTAL 7.00E 00 5.30E 01 '

N 5.90E 01 2.00E 01 0.00E 01 0.00E 01 1.39E 02 kkE 9.00E 00 4.80E 01 4.40E 01 1.50E 01 0.00E 01 0.00E 01 1.16E 02

SE 1.10E 01 3.70E 01 5.30E 01 2.20E 01 2.00E 00 0.00E 01 1.25E 02

{

EnE 1.20E 01 4.30E 01 T.80E 01 3.60E 01 1.00E 00 0.00E 01 1.70E 02 E 7.00E 00 4.90E 01 5.60E 01 4.00E 01 9.00E 00 0.00E 01 1.61E 02 ,

ESE 9.00E 00 5.10E 01 5.00E 01 1.10E 01 0.00E 01 0.00E 01 1.21E 02

$E 1.00E 01 6.80E 01 4.90E 01 3.00E 00 1.00E 00 0.00E 01 1.31E 02 y $tt 1.40E 01 7.10E 01 5.40E 01 2.20E 01 0.00E 01 0.00E 01 1.61E 02 i S 1.10E 01 6.50E 01 8.70E 01 6.70E 01 1.00E 01 0.00E 01 2.40E 02

ssW 7.00E 00 6.80E 01 1.2BE 02 7.30E 01 0.00E 01 0.00E 01 2.76E 02

$W 7.00E 00 6.90E 01 1.29E 02 6.10E 01 3.00E 00 5.00E 00 2.74E 02 WSW 6.00E 00 2.40E 01 7.40E 01 4.50E 01 -3.20E 01 1.70E 01 1.9BE 02 W 1.10E 01 1.90E 01 5.60E 01 3.80E 01 1.80E 01 8.00E 00 1.50E 02 VNW 6.00E 00 2.40E 01 3.40E 01 4.00E 01 3.40E 01 1.90E 01 1.57E 02 hV '.00E 00 3.80E 01 $.40E 01 2.30E 01 1.80E 01 3.00E 00 1.43E 02 hvJ 6.00E 00 3.10E 01 5.40E 01 2.00E 01 0.00E 01 0.00E 01 1.11E 02 101At 1.40E 02 7.58t 02 1.06E 03 5.36E 02 1.28E 02- 5.20E 01 2.67E 03 ;

PERIOOS of CALM (l% R$): 5.00E 00 ylk0 $0EED (WPM) At 60 wf fER LEVEL j DIRECf!CN 13 47 8 12 13 18 19 ?4 324 10?At N 4.00E 00 3.50E 01 6.30E 01 3.60E 01 9.00E 00 0.00E 01 1.47E 02 hht 5.00E 00 2.40E 01 4.60E 01 1.70E 01 1.10E 01 0.00E-01 1.03E 02 hi 4.00E 00 2.30E 01 3.40E 01 4.80E 01 1.80E 01 8.00E 00 1.35E 02 thE 9.00E 00 -1.80E 01 4.60E 01 3.90E 01 3.10E 01 1.40E 01 1.5?E 02 E 6.00E 00 2.40E 01 3.70E 01 4.80E 01 3.10E 01 3.50E 01 1.81f 9 i ESE 9.00E 00 3.10E 01 3.20E 01 3.10E 01 6.00E 00 0.00E 01 1.09E ;t sE 1.20E 01 5.1DE 01 4.10E 01 1.40E 01 1.00E 00 1.00E 00 1.20E <

$$E 9.00E 00 4.80E 01 3.90E 01 3.60E 01 1.40E 01 2.00E 00 1.4DE 02

$ 1.30E 01 4.40E 01 5.60E 01 6.30E 01 2.60E 01 3.20E 01 2.34E 02

$$W 7.00E 00 4.30E 01 8.80E 01 1.15E 02 3.10E 01 3.00E 00 2.87E 02

$W- 3.00E 00 4.10E 01 1.0CE 02 9 40E 01 2.30E 01 1.40E 01 2.83E 02 i vsw 5.00E 00 2.10E 01 6.40E 01 5.40t 01 3.30E 01 3.70E 01 2.14E 02 i

^

W 6.00E 00 1.90E 01 4.20E 01 2.10E 01 2.00E 01 1.60E 01 1.24E 02 VW 6.00E 00 1.70E 01 2.50E 01 2.50E 01 1.60E 01 3.50E 01 1.24E 02 NW 6.00E 00 2.40E 01 4.90E 01 3.40E 01 1.60E 01 3.10E 01 1.60E 02

- wJ 5.00E 00 1.POE 01 5.?Of 01 3.40E 01 2.00E 00 2.00E 00 1.13E 02

- 10 fat 1.09E 02 4.81E 02 8.22E 02 7.09E 02 2.88E 02 2.30E 02 2.64E 03 i

PERIOD $ OF CALM (HOURS): 5.00E 00 96

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

I Mit 15 (C et'd)

STABill?Y ftA$5 B VIND $PfED (uPN) At 10 MiffR LEVEL 4

Diff0ftpv i3 47 B.12 13 1B 19 24 >24 10 fat N 0.00E 01 2.00E 00 4.00E 00 3.00E 00 0.00E 01 0.00t 01 9.00E 00 hht 0.00E 01 3.00E 00 2.00E 00 3.00E 00 3.00E 00 0.00E 01 1.10E 01 ht 1.00E 00 3.00E 00 7.00E 00 3.00E 00 2.00E 00 0.00E 01 1.60E 01 Ekt 0.00E 01 1.00E 00 1.20E 01 1.00E 00 0.00E 01 0.00E 01 1.40E 01 E 0.00E 01 6.00E 00 3.00E 00 0.00E 01 0.00E 01 0.00E 01 9.00E 00 l ESE 0.00E*01 7.00E 00 6.00E 00 1.00E 00 0.00E 01 0.00E 01 1.40E 01

$E 1.00E 00 4.00E 00 3.00E 00 0.00E 01 0.00E 01 0.00E 01 8.00E 00 SLE 2.00E 00 4.00E 00 5.00E 00 1.00E 00 0.00E 01 0.00E 01 1.20E 01 !

$ 1.00E 00 4.00E 00 6.00E 00 7.00E 00 '. 00E 00 0.00E 01 1.90E 01

$5W 0.00E 01 2.00E 00 6.00E 00 7.00t 00 0.00E 01 2.00E 00 1.70E 01 !

$W 0.00E 01 2.00E 00 1.00E 00 1.00E 00 1.00E 00 1.00E 00 6.00E 00 V5W 0.00E 01 1.00E 00 3.00E 00 3.00E 00 1.00E 00 0.00E 01 8.00E 00 V 0.00E 01 0.00E 01 1.00E 01 1.00E 01 3.00E 00 4.00E 00 2.70E 01 VWW 0.00E 01 3.00E 00 1.00E 00 $.00E 00 7.00E 00 1.00E 00 1.70E 01 hw 0.00E 01 2.00E 00 6.00E 00 4.00E 00 0.00E 01 0.00E 01 1.20E 01 I kWW 0.00E 01 2.00E 00 2.00E 00 8.00f 00 0.00t-01 OJ2E-01 1.20t 01 ;

total 5.00E 00 4.60t 01 7.70E 01 5.7CE 01 1.80E 01 8.00E 00 2.11E 02 PERICOS of CALM (HOURS): 0.00E 01 VIND SPf fD (MFN) AT 60 M[T[R (fVf L i DiffCTION 13 47 8 12 13 18 19 24 *24 total

) N 0.00E 01 1.00E 00 4.00E 00 6.00E 00 2.00E 00 0.00E 01 1.30E 01 !

kht 0.00E 01 1.00E 00 1.00E 00 3.00E 00 0.00E 01 6.005 00 1.10E 01 kE 1.00E 00 0.00E 01 2.00E 00 5.00E 00 2.00E 00 3.00, 00 1.30E 01 thE 0,00E 01 0.00E 01 3.00E 00 1.10E 01 1.00E 00 0.00E 01 1.50E 01 i E 0.00E 01 3.00E 00 4.00E 00 2.00E 00 2.00E 00 0.00E 01 1.10E 01 E$E 0.00E 01 1.00E 00 7.00E 00 3.00E 00 0.00E 01 0.00E 01 1.10E 01 t

$f 0.00E 01 1.00E 00 3.00E 00 2.00E 00 1.00E 00 0.00E 01 7.00E 00

$5E 0.00E 01 2.00E 00- 2.00E 00 3.00E 00 1.00E 00 0.00E 01 8.00E 00 s 1.00E 00 5.00E 00 3.00E 00 5.00E 00 5.00E 00 4.00E 00 2.30E 01 Ssw 0.00E 01 1.00E 00 3.00E 00 8.00E 00 5.00E C0 2.00E 00 1.90E 01 SV 0.00E 01 1.00E 00 2.CCE 00 0.00E 01 1.00E 00 2.00C 00 6.00E 00 Wsv 0.00E 01 2.00E 00 2.00E 00 3.00E 00 1.00E 00 1.00E 00 9.00E 00 V 0.00E 01 0.00E 01 1.00E 01 3.00E 00 6.00E 00 7.00E 00 . 2.60E 01 V%V 0.00E 01 1.00E 00 0.00E 01 4.00E 00 2.00E 00 7.00E 00 1.40E 01 kW 0.00E 01 1.00E 00 2.00E 00 1.006 00 3.00E 00 0.00E 01 7.00E 00 WWV 0.00E-Oi 3.00f 00 5.00E 00 1.00E 00 4.00E 00 0.00E-01 1.30F 0,1 TOTAL 2.00E 00 2.30E 01 5.30E 01 6.00E 01 3.60E 01 3.20E 01 2.06E 02 PER100$ OF CALM (H3)R$): 1.00E 00 S i

1 1

97

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

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

+

J

, i lifl[ 15 (Cont t STAfl!LlM CLa$$ C VIND S0f ED (MPN) AT 10 ktf ER LEiTL Di#ECT104 13 47 6 12 13 18 19 24 >24 .31 A t N 0.00E 01 4.00E 00 6.00E 00 3.00E 00 0.00E 01 0.00E 01 1.30E 01 ;

hWE 2.00E 00 1.00E 00 3.00E 00 5.00E 00 1.00E 00 0.00E 01 1.20E 01 4E 0.00E 01 1.00E 00 7.00E 00 5.00E 00 0.00E 01 0.00E 01 1.30E 01 eke 0.00E 01 5.00E 00 1.20E 01 2.00E 00 0.00E 01 0.00E 01 1.90E 01 E 0.00E 01 1.30E 01 3.00E 00 0.00E 01 0.00E 01 0.00E 01 1.60E 01 ESE 2.00E 00 2.00E 00 5.00E 00 2.00E 00 0.00E 01 0.00E 01 1.10E 01 SE 3.00E 00 3.00E 00 9.00E 00 1.00E 00 0.00E 01 0.00E 01 1.60E 01 i SSE 0.00E 01 1.00E 00 2.00E 00 0.00E 01 0.00E 01 0.00E 01 3.00E 00 5 0.00E 01 2.00E 00 t00E 00 6.COE 00 0.00E 01 0.00E 01 1.f.0E 01 SSW 0.00E*01 4.00E 00 1.00E 01 5.0DE 00 0.00E-01 0.00E 01 1.90E 01 SW 1.00E 00 2.00E 00 7.00E 00 2, Qt 00 0.00E 01 0.00E 01 1.20E 01 WSW 0.00E 01 2.00E 00 4.00E 00 4.00E 00 2.00E 00 0.00E 01 1.20E 01 W 0.00E 01 3.00E 00 6.00E 00 1.70E 01 5.00E 00 1.00E 00 .3.20E 01 VWW 0.00E 01 1.00E 00 3.00E 00 9.00E 00 2.00E 00 3.00E 00 1.60E 01 NW 0.00E 01 4.00E 00 6.00E 00 6.00E 00 1.00E 00 0.00E-01 1.0E 01 ,

WWW 0.00E 01 4.00F 00 6.00E 00 3.00E 00 0.00E 01 0.00E 01 1.30t 01 >

' TOTAL 8.00E 00 5.20E 01 9.70E 01 7.00E 01 1.10E 01 4.00E 00 2.42E 02 PER!00$ OF CALM (HOURS)i 0.00! 01 ,

i WIND SPEED (804) Af 60 METI# LEVEL DI#ECT10N 13 47 8 12 13 18 19 2 Q4 TOTAL N 0.00E-01 2.00E 00 4.00E 00 6.00E 00 4.00E 00 0.00E 01 1.60E 01 i hkE 1.00E 00 3.00E 00 4.00E 00 4.00E 00 3.00E 00 1.00E 00 1.60E 01 ;

kt V.00E-01 0.00E 01 1.00E 00 2.00E 00 6.00E 00 3,00E UO 1.20E 01 ENE 0.00E 01 1.00E 00 2.00E 00 8.00E 00 5.00E 00 E.00E 01 1.60E 01 E 0.00E 01 2.00E 00 7 00E 00 7.00E 00 0.00E 01 0.00~ 01 1.60E 01 ESE 2.00E 00 1.00E 00 2.00E 00 5.00E 00 0.00E 01 0.00E-01 1.00E 01 SE $.00E 00 - 1.00E 00 5.00E 00 5.00E 00 1.00E 00 0.00E 01 1.40E 01 SSE 'E 00 1.00E 00 1.00E 00 3.00E 00 1.00E 00 0.00E 01 7.00E 00

$ b.vuE 01 3.00E 00 0.00E-01 8.00E 00 4.00E 00 1.00E 00 1.60E 01 SS, 0.00E 01 1.00E 00 1.00E 00 1.00E 01 2.00E 00 1.00E 00 1.50E 01 SW 0.00E 01 2.00E 00 5.00E 00 7.00E 00 2.00E 00 0.00E 01 1.60E 01 0.00E 01 2.00E 00 !

WSW 1.00E 00 5.00E 00 3.00E 00 4.00E 00 1.50E 01 W 0.00E+01 1.00E 00 5.00E 00 6.00E 00 1.00E 01 2.00E 00 2.40E 01 i

- WW 0.00E 01 1.00E 00 1.00E 00 7.00E 00 4.00E 00 4.00E 00 1.70E 01 NW 0.00E 01 2.00E 00 6.00E 00 6.00E 00 6.00E 00 1.00E 00 2.10E 01 i WW 0.00E 01 1.00E 00 4.00F 00 3.00E 00 1.00E 00 0.00E-01 9. 00LO_Q TOTAL 6.00E 00 2.30E 01 5.00E 01 9.20E 01 5.20E 01 1.70E 01 .2.40E 02 PER100$ OF CALM (HCURS): 0.00E 01 l

98 l

l' , _ _ . _ . _ _ , _ . _ , _ , _ , _ . . _ _ _ . . - _ . _ _ _ _ _ . , _ , - - _ _ _ _ . _ - , , _ . _ _ , _ . . . _ _ , -

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

a l.

I J LABLE 15 (Contt Ligjt11Y ftA$$ g Vf ND SPEED (HON) AT 10 WE1ER LEVEL Ditt0110W 13 47 8 12. 13 18 19 24 324 total W 0.00E 01 3.30E 01 1.08E 02 6.60E 01 2.00E 00 0.00E 01 2.09E 02 hht 5.00E 00 1.40E 01 5.00E 01 2.70E 01 0.00E 01 0.00E-01 9.60E 01 l kt 7.00E 00 3.00E 01 6.50E 01 8.00E 00 0.00E 01 0.00E 01 1.10E 02 l Eh! 7.00E 00 2.70E 01 3.00E 01 0.00E 01 0.00E 01 0.00E 01 6.40E 01

E 8.00E 00 4.70E 01 1.00E 01 0.00E 01 0.00E+01 0.00t 01 6.50E 01 Ett 6.00E 00 4.60E 01 1.70E 01 0.00E 01 0.00E 01 0.00E 01 6.90E 01 ;

SE 3.00E 00 5.10E 01 4.90t 01 8.00E 00 0.00E 01 0.00E 01 1.11E 02 ,

$$E 4.00E 00 3.40E 01 5.50E 01 2.60E 01 0.00E-01 0.00E 01 1.19E 02

$ 3.00E 00 1.80E 01 4.70E 01 4.90E 01 1.70E 01 1.00E 00 1.35E 02 1

$$W 0.00E 01 4.00E 01 9.v0E 01 4.10E 01 4.00E 00 0.00E 01 1.84E C2 SW 8.00E 00 1.20E 01 3.50E 01 8.00E 00 0.00E=01 1.0DE 00 6.40E 01 ,

y V5W 4.00E 00 2.20E 01 3.10E 01 1.40E 01 1.00E 00 0.00E 01 7.20E 01 W 2.00E 00 1.90E 01 5.60E 01 4.60E 01 1.40E 01 2.00E 00 1.39E 02 WW 2.00E 00 1.80E 01 5.60E 01 4.80E 01 2.00E 00 3.00E 00 1.29E 02 W 4.01E 00 2.50E 01 5.50E 01 1.40E 01 0.00E 01 0.00E 01 9.80E 01 NW 7.00E 00 4.00E 01 6.30E 01 1.$0E 01 0.ONE 01 0.00E*01 1.?$E 22 total. 7.00E 01 4.76E 02 8.26E 02 3.70E 02 4.00E 01 7.00E 00 1.79E C3 l PERICOS OF CALM (HOUR 5}t 8.00E 00 Vf WD $PEfD (MPW) AT 60 WETER LEVf L Di#f0ff0W 1-3 4-7 6 12 13-18 19-24 $24 TOTAL i

N 1.00E 00 2.30E 01 6.90E 01 1.15E 02 2.40E 01 1.00E 00 2.33E 02 ;

hht 1.00E 00 1.00E 01 2.70E 01 3.200 01 2.10E 01 4.000 00 9.50E 01 (

AE 1.00E 00 8.00E 00 1.40E 01 6.60E 01 1.70E 01 9.00E 01 1.06E 02 ENE 4.00E 00 1.30E 01 1.50E 01 2.30E 01 3.00E 00 0.00E 01 5.60E 01 E 3.00E 00 1.70E 01 2.70E 01 2.10E 01 2.00E 00 0.00E 01 7.00E 01 I E5E 5.00E 00 2.50E 01 2.601 01 7.00E 00 0.00E 01 0.00E 01 6.30E 01 ft . 3.00E 00 2.60E 01 .t.50E 01 1.90E 01 . 1.10E 01 2.00E 00 9.60! 01

~

SSE 3.00E 00 1.00E 01 3.40E 01 5.80E P1 2.20E 01 1.20E 01 1.39E 02

, S 2.00E 00 6.00E 00 2.30E 01 3.60E 01 4.20E 01 3.50E 01 1.44E 02 l

$5W . 1.00:: 00 4.00: 00 4.80E 01 8.50t 01 2.70E 01 1.30E 0* 1.78E 02 SW 1.00E 00 6.00E 00 2.70E 01 2.60E 01 $.00E 00 1.00E C0 6.60C 01 kW 2.00E 00 1.30E 01 2.7CE 01 2.50E 01 6.00E 00 i.00E 00 7.40E 01 i W 0.00E-01 6.00E 00 3.30E 01 5.40E 01 2.70E 01 1.10E 01 1.31E 02 WV 2.00E 00 6.00E 00 1.70E 01 4.=0E 01 2.00E /J1 5.00E 00 9.40E 01 '

W 0.00E-01 1.50E 01 3.00E 01 3.80E 01 1.00E 01 0.00E 01 9.30E 01 WW 1.00f 00 _ _ 1.50E 01 4.30E 01 3.00E 01 2.00E 00 0. 00L,qi 1.LOLjl j' TOTAL 3.00E . 01_ _ 2.03E 02 4,95E 02 6.88E 02 2,37E 02 8.50E 01 1.74E 03 l

pet tto: OF CALM (Hours): 2.00E 01 i

L 99 4

c,-,,..-ww. ,.m.wwi.<--p~.p,,.m.m....rg ,,m..y..-%.,,.g_ ,._n_rme...-m_,, ...y ,y_ , . . -r -w we v. w r .ww.s -+ +--s+c,ri-me=-- --v-.- - - , . w -e w-v*=.-'- ---ir='

TABit 15 (fpnt'd) f,tagttity ttass t W V SPEED ju."W) At 10 wffit (EVEL DIRE 01'Oh 13 47 B 12 13 18 19-[4 32t 1014L h 5.00E 00 3.50E 01 2.40E 01 5.00E 00 0.00E 01 0.00E 01 6.90E 01 hkE 1.70 01 2.7DE 01 1.70E 01 6.00E 00 0.00E 01 0.00E 01 6.70E 01 kE 1.10E 01 5.10E 01 2.30E 01 1.00E 00 1.00E 00 0.0bE 01 8.70E 01 EEE 8.00E 00 4.70E 01 8.00E 00 0.00E 01 0.00E 01 0.00E 01 6.30E 01 E 1.50E 01 5.5CE 01 0.00E 01 0.00E 01 0.00E 01 0.00E 01 7.00E 01 ESE 1.60E 01 4.50E 01 0.00~ 01 0.00E 01 0.00E 01 0.00E 01 6.10E 01 SE 1.40E 01 7.70E 01 2.20E 01 0.00E 01 0.00E 01 0.00E 01 1.13E 02 SSE 1.70E 01 8.90E 01 3.60E 01 6.00E 00 1.00E 00 0.00E-01 1.49E 02

$ 1.30E 01 9.60E 01 1.62E 02 5.70E 01 5.00E 00 1.00E 00 3.34E 02 SSW 1.10E 01 1.24E 02 1.48E 02 3.60E 01 1.00E 00 0.00E 01 3.20E 02 SW 1.20E 01 5.30E 01 3.20E 01 9.00E 00 0.00t-01 0.00E 01 1.064 02 WsV 7.00E 00 2.40E 01 3.60E 01 1.00E 01 0.00E 01 0.00E 01 7.70( 01 W 6.00E 00 3.90E 01 3.30t 01 6.00E 00 2.00E 00 0.00E 01 8.60E 01 WNJ 6.00E 00 4.90E 01 3.20E 01 1.40'. 01 v.00E 01 0.00E 01 1.n1E 02 WW 7.00t 00 4.00E 01 2.70E 01 2.00E 00 0.00E 01 0.00E 01 7.60E 01 hw 6.00E 00 2.50E 01 __2.00E 01 2.00i. 00 0.00E 91 0.02L 01 5.30E 91 TOTAL 1.71E 02 8.7EE C2 6.20E 02 1.54E 02 1.00E 01 1.001 00 1.83t 03 FERin05 0F CALM (HOURS); 2.00E 00 6

VLC E*f EEp (wt w) 41 60 ut1te IL h O!PECT1W 13 47 8 12 _ 13-18 19 24 >24 totX_

N 2.00E 00 7.00E 00 3.30E 01 2.7EE 01 6.00E 00 0.00E 01 7.50E 01 kNE 2.00E 00 1.30E 01 1.8t1 01 1.60E 01 4.00E 00 0.00E On 5.30E 01 NE 2.00E 00 5.00E 00 2.10E 01 4.40E 01 3.00E 00 2.00E 00 7.70E 01 thE 1.00E 00 3.00E 00 2.70E 01 2.702 01 0.00E 01 0.00E 01 5.80E 01

~

E 2.000 00 6.00E 00 3.60E 01 2.4CE 01 0.00E 01 0.00E 01 6.8;E 01 ESE 2.00E 00 2.90E 01 2.5SE 01 1.00E 00 0.00E 01 0..JE 01 5. 70E 01 SE 4.00E 00 1.50E 01 4.20E 01 1.10E 01 5.00E 00 0.00E 01 7.70E 01

$$E 3.00E 00 1.50E 01 6.40E 01 ' 'OE 01 7.00E 00 6.00E 00 1.48E 02 5 3.00E 00 1.20E 01 7.80E 01 1.40E 02 7.40E 01 2.50E C1 3.32E 02

$5V 5.00E 00 1.50E 01 7.900 01 1.82E 02 5.70E 01 5.00E 00 3.41E 02 SW 2.00E CO 1.00E 01 4.80E 01 5.20E 01 1.00E 01 2.0CE 00 1.24E 02 VSW 1.00E 00 3.00E 00 4.00E 01 2.90E 01 7.00E 00 1.00E 00 8.30E 01 W 2.00E 00 6.00E 00 2.40t 01 2.40E 01 7.00E OF 0.00E 01 6.30E 01

'A s 3.00E 00 8.00E 00 3.10E 01 2.60E 01 1.00E 01 0.00E 01 7.80E 01 WW 3,00E 00 1.50E 01 5.30E 01 3.?CE 01 0.00E-21 0.00E 01 1.03E C2 WW 0.0PE-01 130E 01 3.]OE 01 1.6;E 01 1.00L(0 0.00E 01 6.50t 01 total 3.70E 01 1.75E 02 6.521 02 7.04E C2 1.93E 02 4.10E 01 1.80E 03 PER Mts Of CALM (HOURS): 1.00E 00 100

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

f 1ABLE 15 (Eret' Q r U AB t L iTL.CL RJ l' WIND SPEED (uPQ,At 10 NE1E(.LfYtt DitEffl0N 13 47 6 12 13 18,,,, _ Q 24 324 TOTAL l W 5.00E 00 1.30E 01 1.007 00 0.00E 01 'O.00E 01 0.00E 01 1.90E 01 but 1.30E 01 2.50E 01 1.00E 00 0.00E-01 0.00E 01 0.00E 01 3.90E 01 l

ht 1.20E 01 4.90E 01 0.00E 01 0.00E 01 0.00E 01 0.00E 01 6.10E 01 l

Est 1.10E 01 2.30E 01 0.00E 01 0.00E 01 0.00E 01 0.00E 01 3.40E 01 E 2.00E 01 8.00E 00 0.00E 01 0.00g 01 0.0L! 01 0.00E 01 2.80E 01 ESE 1.30E 01 1.20E 01 0.00E-01 0.00E 01 0.00E 01 0.00E 01 2.50E 01 SE 1.80E 01 2.40E 01 3.NE 00 0.00E 01 0.00E 01 0.00E C1 4.50E 01 SSE 1.40! 01 $.20E 01 4.00! 00 0.00E 01 0.00E 01 0.00E 01 7.00E 01 S 1.40E 01 3.60E 01 2.90E 01 0.00E 01 0.00E*01 0.00E 01 7.90E 01 SSV 1.10E 01 5.50E 01 2.30E 0. 1.00E 00 0.00E 01 0.00E 01 9.00E 01 SW 9.00! 00 2.90E 01 6.00t 00 1.00E $0 0.00E 01 0.00E 01 4.50E 01 WSW 9.00E 00 2.40[ 01 1.wt 01 4.00E 00 3.00E 00 0.00E 01 5.00E 01 W 1.00t 01 2.70E 01 5.00E 00 1.00E 00 2.00E 00 0.00E 01 4.50E 01 i WWW 4.00E 00 2.10E 01 0.00E C1 0.00E 01 0.00E 01 0.00E-01 2.50E 01 hW 5.00E 00 1.60r 01 1.00E 00 0.00E 01 0.00E 01 0.00E 01 2.20E 01 [

kWW 2.00E 00 5.00E 00 3 500E 00 0.00E 01 0.00E 01 0.001 01 1.00E 01 ;

TOTAL 1.70E 02 4.19E 02 8.60E 01 7.00E 00 5.00E 00 0.00E 01 6.*7E 02 PERIC05 0F CALM (MOUkS): 1.00E DO y_tWO SPf.LD, JupH1 At 60 WFTER LEVEL gjpfp. flow 13 t. 7 ,,,$, 12 13 18 19-24 *24 TOTAL h 1.00E 00 1.00E 00 1.10E 01 4.00E 00 0.00E 01 0.00E 01 1.70E 01 khE 3.00E 00 4.00E 00 1.30! 01 5.00E 00 1.00E 00 0.00E 01 2.60E 0: ,

ht 1.00E 00 3.00E 00 1.80E 01 2.20E 01 0.00E Oi 0.00E 01 4.40E 01 i eke 0.00E 01 2.00E 00 1.80E 01 1.40E 01 0.00E 01 0.00E-01 3.40E 01 3 E 2.00E 00 3.00E 00 2.00E 01 1.10E 01

00E 00

. 0.00E-01 3.70E 01 ESE 3.00* 00 1.30E 01 5.00E 00 0.00E 01 0.00E 01 0.00E-01 2.10E 01 SE 4.0W 00 8.00E 00 1.60E 01 6.00E 00 0.00E 01 0.00E s1 3.40E 01 .

StE 2.00E 00 1.40E 01 2.30E 01 1.20E 01 2.00E 00 0.00E 01 5.30E 01 l 5 2.00E 00 9.00E 00 4.70E 01 2.30E 01 1.50E 01 0.00E 01 9.605 01 SSW 1.00E 00 7.00E 00 2.70E 01 4.20E 01 1.20E 01 1.00E 00 9.00E 01 SW 2.00E 00 4.00E 00 2.80E 01 3.30E 01 2.00E 00 0.00E 01 6.99E 01 WSV 0.00E 01 6.00E 00 1.30E 01 2.50E 01 3.00E 00 6.00E 00 5.30E 01 i

W 2.00." 00 3.003 00 1.00E 01 1.20E 01 1.00E CO 1,00E 00 3.40E 01 VNW 0.00E 01 5.00E C0 1.50E 01 5.00E 00 0.00E 01 0.00E-01 2.50E 01 2.90E 01 '

WW 2.00E 01 7.00E 00 1.80E 01 2.00E 00 0.00E 01 0.00E 01 i WW 2.00E 00 6.00E 00 BJfE 00 9.00E 00 0.00E-01 0.00E 01 2.50E 01 -i' TOTAL 2.70E 01 1.00E 02 2.90E 02 2.25E 02 3.70E 01 8.00E 00 6.87E 02 PER100S OF CALM (HOURS): 0.00E 01 ;

.}

101 I

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

T Aet t 15 (Eont'd) t ST491Ll1T CLASS 0 WIND SPEED (MPN) AT 10 METER LEVEL DIRECTION b3 47 8 12 13-18 19-24 >24 707Al N 2.10E 01 1.90E 01 0.00E 01- 0.00E 01 0.00E-01 0.00E 01 4.00E 01 kWE 2.60E 01 4.70E 01 0,00E 01 0.00E-01 0.00E 01 0.00E 01 7.30E 01 ,

NE 3.10E 01 3.60E 01 0.00E 01 0.00E-01 0.00E 01 0.00E 01 6.70E 01 ,

ENE 2.20E 01 7.00E 00 0.00E 01 0.00E 01 0.00E-01 0.00E 01 2.90E 01 E 2.30E 01 4.00E 00 0.00E 01 0.00E-01 0.00E 01 0.00E 01 2.70E 01 ESE 1.70E 01 4.00E 00 0.00E 01 0.00E 01 0.00E*01 0.00E 01 2.10E 01 SE 4.00E 00 1.00E 01 0.00E-01 0.00E L1 0.00E 01 0.00E*01 1.40E 01 SSE 6.00E 00 9.00E 00 1.00E 00 0.00E-01 0.00E 01 0.00E 01 1.60E 01 5 7.00E 00 1,20E 01 2.00E 00 0.00E-01 0.00E 01 0.00E-01 2.10E 01 SSW 1.000 01 9.00E 00 6.00E 00 2.00E 00 0.00E 01 0.00E 01 2.70E 01 sw 1.40E 01 1.70E 01 1.00E 00 1.00E 00 1.00F, 00 0.00E 01 3.40E 01 WSW 1,40E 01 1.40E 01 2.00E 00 1.00E 00 1.00E 00 0.00E 01 3.20E 01 W 1.30E 01 4.00E 00 1.00f 00 0.00E-01 0.00E-01 0.00E 01 1.80E 01 WNW 1.10E 01 9.00E 00 0.00E 01 0.00E 01 0.00E 01 0.00E 01 2.00E 01 NW 1.40E 01 3.00E 00 0.00E 01 0.00E-01 0.00E-01 0.00E 01 1.70E 01 hww 1.20E 01 0.00E 01 0.00E 01 0.00E-01 0.00E 01 0.00E 01 1.70E 01 TOTAL 2.45E 02 2.04E 02 1.30E 01 4.00E 00 2.00E 00 0.00E 01 4.68E 02 i

PER1005 of CALM (HOURS): 3.ME 00 VIND SPEED At 60 WETER LEVEt i

qJeftT!04 1-3 47 8 12 13 18 19 24 >24 TOTAL N 4.00E 00 8.00E 00 7.00E 00 3.00E 00 0.00E-01 0.00E 01 2.20E 01 WWE 6.00E 00 7.00E 00 9.'00E 00 1.30E 01 0.00E-01 0.00E 01 3.50E 01 -

NE 2.00E 00 6.00E 00 1.30E 01 3.70E 01 0.00E 01 0.00E-01 5.80E 01 j EhE 3.00E 00 0.00E 00 1.50E 01 2.50E 01 0.00E 01 0.00E 01 5.10E 01 E 5.00E 00 8.00E 00 3.00t 01 5,00E 00 0.00E-01 0.00E 01 4.80E 01 ESE 6.00E 00 1.30E 01 2.00E 00 0.00E-01 0.00E 01 0.00E 01 2.30E 01 l SE 4.00E N 1.10E 01 1.20E 01 0.00E-01 0.00E-01 0.00E-01 -2.70E 01 l SSE 1.00E.00 1.60* 01 6.00E C0 0.00E 01 1.00E 00 0.00E 01 2.40E 01 l

S 2.00E 00 7, 7.00E 00 6.00E 00 1.00E 00 0.00E 01 2.30E 0?

l SSW 2.00E 00 L:M F 1.00E 01 1.40E 01 4.00E 00 3.00E 00 3.40E 01 SW 1.00E 00 6.0 c 0 00E 00 8.00E 00 2.00E 00 2.00E 00 2.7CE 01 WSW 3.005 00 7.00E 00 1.80f 01 1.40E 01 0,00E 01 0.00E-01 0.20E 01 W 2.00E 00 6.00E 00 d 00E 00 3.0CE 00 0.00E 01 0.00E-01 1.50F 01 VNV 2.00E 00 2.00E 00 6.00E 00 1.00E 00 0.00E-01 0.00E-01 1.10E D1 WW 3.00E 00 3.00E 00 9.00E 00 0.00E 01 0.00E-01 0.00E 01 1.50E 01

!: WW 3.00E 00- 9.00E 00 1.00E 00 2.00E 00 0.00E 01 0.00E-01 1.50E 01 TOTAL 5.1GE 01 1.18E 02 1.57E 02 1.31E 02 a.00E 00 5.00E 00 4,70E 02 PERIOD OF CALM (HOURS): 1.COE 00 102 '

L

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

N NWN 6.3%

4.3% NNE

- 5.2%

NW ,~.

4.9% y NE WNW q ,

5.9!g '

ENE x .

~

N '

f 5.0%

x- 'm -

,y pb.

s,4 +

W 3

{lNbMbhN/ l y k[~" lNb! 4 gg

/( k l 4 %

w i-SE I .

5.5%

7W .

5.8% us i

h $r. SSE 6.7%

ggw WIND SPEED KEY 11.8% S

' >24 MPH 10.77.

2w 19-24 MPH a_1s uns l [ B-12 MPH 4-7 MPH E 1 3 MPH l

l FIGURE 15: 1991 CLINTON POWER STATION 10 METER WIND ROSE 103

N NWN 6.7%

4.4% NNE

~

Y 4.4 %

NW 5.5% NE 5.7%

WiM ENE 4.7% gN l * ( .

s

[4g l (s$i bfM- '

4g < NN{f_jh 55%

N

~

ESE WSW ' [, ' U 3.8%

6.3% @ \'

s db >

SE

Nj 4.8%

4 ' ~~

sw 7.6% Yy

s

- SSE 6.8%

ggw WIND SPEED KEY 12.4.Y S >24 MPH I I'

] '

19-24 MPH 13-1B MPti

[ B-12 MPH o.7 urH 2 1-3 MPH FIGURE 16: 1991 CLINTON POWER STATION

! 60 METER WIND ROSE 105 i

a el y

5

! B I a a

]

el In 3

a

. .,c g + , . n. ,

y ,. ,ggg 7

. ryg , ,g ,g , 7 7

y .;; y yn , ]ag w.,

3 j g

[

' # ~~"

k ~

. g .. , fL .wl f Q J v, l ~ i QR . .

g;... p * . >

\'. .

p gd/ 7'~;. j,r

/

~. ,. 1 - .... ..

,N

.c -

, % .- E

-l -

.f -'c a} z o

,s.

% a .

V 9 3

. T .g *K ,,

+e'>

,c i t i ,

i a '

o e ,.,

1 - 3,.} '

g,

'ig- l h'., -.g

~

1 L

' ;. 3 tr

. ,~ ~, ,

~ .

NON-RADIOLOGICAL ENVIRONMENTAL PROGRAMS

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

I VI. NON-RADIOLOG1 CAL _ENVIRONMF.NTAL PROG 1MMfi - 7 The Biological Programs Section (BPS) of Environmental Affairs is in charge of the Environmental Monitoring

- Program .- Through this program, the biological aspects of Clinton Lake are monitored on a routine basis. This is done in an effort to evaluate any changes which might take place within the lake due to'the construction and operation of CPS. A number of areas are monitored, including phytoplankton (microscopic free-floating plants - algae),

periphyton (microscopic attached algae), zooplankton (microscopic free-floating. animals), benthos (larval insects which live in the mud at the bottom of the lake), and fish.

The results of several years of monitoring indicate no -

detrimental effects from the operation of CPS. Several biological organisms,-including-fish, are attracted to, and benefit from extended growing seasons in the warm water areas of Clinton Lake..

In addition to this required sampling, BPS is also involved in several other. environmental projects around the site. In addition to the fish stocking which IDOC does each year in Clinton Lake, BPS conducts supplemental fish stocking by using fish. rearing ponds and the purchase of fish. There-are seven rearing ponds near Clinton Lake which are annually stocked with fish fry (approximately 1/4 inch long). These fish eat insect larva and are fed minnows from May through October each yeer, and the resultant large size fingerlings (8-10 inches in length) are released into Clinton Lake.

Stocking larger sized fish helps ensure their survival.

Table 16 provides data on the numbers and species of fish released to Clinton Lake.

Illinois Power contacted IDOC during the fall of 1990 regarding the possible stocking of wild turkeys on the inner peninsula. EIn the winter of 1991, the IDOC successfull3 trapped.and relocated several wild turkeys to the inner peninsula. Six more have already been stocked in 1992.

These turkeys, along with a stocking at an adjacent state park (Weldon Springs) should help _ establish a resident population of birds in DeWitt County.

- -One-environmental project which began while the CPS was being constructed involved the restoration of a natural prairie. An 80 acre natural prairie was planted and

, -fertilized to help establish a-prairie that has a wide variety and diversity of plants. This area had been severely degraded due to over-grazing-by cattle before

-Illinois Power's successful prairie restoration project.

It now looks and ecologically functions as a real prairie.

The prairie is located on the North Fork of Clinton Lake.

I Within the last two years, Illinois Power has become involved in several wildlife management projects at CPS.

107

i One project involves management of a pond used for cettling I silt when tle nr. sin near the plant intake was dredged

! (summer ad idl 1990). This pond is now being put into a l secondary use for fish rearing and for waterfowl management.

Numerous goose nesting structures have been placed within the pond to provide proper goose nesting habitat. Thousands of ducks also frequent the pond, and some have also nested there.

1 Illinois Powcr has also been involved in a deer Panagement i program on the inner peninsula and in the Mascoutin State l park. Data was collected cancerning forest and vegetation

damage, and f agricultural crop damage in the area. This data, along with population estimates, verified that there was a

, definite l overpopulation of i ,

deer in the area.

In an effort to J reduce the number Yb 3 h 5AN i

'of deer in the 3,T#'"4N, D / a.w( g.U.._.7~ ,1g4 area, a speciay

. IM'%%-r /db~ . , .

s i

.m . - . . . ., - . . .

6T." " Q archery only deer

4. -

hunt was m , ,; ; M.fr . conducted in nr * ' 1991 This hunt

p " gh,wasc. ondacted

" over an eight

- ; ; ss ,

y ..

- A ', -TL~ 1; ,,_j^.; week period beginning MW W ~

fw ,g?M #*d November 1, 1991.

l j, .

Hunters were

, g. -. . .p %... _.

,-* ., successful in

~- -

reducing the herd I motosrarbe r : Tom wiison) by approximately 27%. Successive hunts will be conducted until the herd is reduced to the desired level.

l The Central Laboratory of the Power Generation Department i monitors the water quality of Clinton Lake. This involves a quarterly assessment of various nutrients and chemical parameters which affect the biological community of Clinton Lake. Results of water quality mmsurements of Clinton Lake indicates the water quality of Clinton Lake is similar to several other central Illinois reservoirs. Influences of CPS operations are primarily associated with increased water temperatures and concomitant decreased dissolved oxygen 108

1 concentrations.--These effects are predominantly restricted to-the area near the CPS cooling water discharge flume.

Several areas around the lake are continually monitored for i changes in water temperature. The warm water plume from the- i discharge canal-usually only_ extends about one-half way_ l around the cooling loop-(the area between the warm water '

discharge and the CPS intake). Thermal discharges (warm water) to the lake are typically 18"F higher than plant intake temperatures. Lake-temperatures are typically influenced more by meteorological conditions than by plant operations at all sites, except in the immediate area of the-discharge canal.

One other-area in which Environmental Affairs is involved relates to an Environmental Outreach section. To increase public environmental awareness, several of the above-mentioned programs and some new programs are currently being publicized.

TABLE 16 PISH STOCKING OF CLINTON LAKE On-Site Illinois Pond Power leur Species Number Size llaised Purchased 1988 Hybrid striped bass 75,000 3" X Largemouth bass 1,000 8" X Walleye 5,000 7" X 1989 Largemouth bass 8,000 7" X Walleye 8,200 7" X 1990 Hybrid striped bass 50,000 3" X Walleye 2,300 7" X Largemouth bass 5,900 5" X 1991 -Striped bass 25,000 3" X Striped bass 45,000 -2" X Striped bass 1,400 8" X Walleye 400 8" X Largemouth bass 300 7" X Totals Striped bass 71,400 1988- Hybrid striped bass 125,000 1991 Largemouth bass 15,200 Walleye 15.90H Total of all fish released 227,500 109

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

l I

l Illinois Power has a CPS Visitor's Center, located approximately five miles east of Clinton on Route 54. The use of this facility promotes environmental awareness when 1 the Biological Programs and Environmental Outreach sectiona staff make public presentations to students from grade school to college level. Partnerships have also been g ...z_ . - - - -

developed with Millikin m,' University to provide i' summer workshops in I lake ecology for high M school students.

'2 Another environmental g_._..__ g education program a-u,

' involves field trips

' #jbms M g % % @2d for grade school j children to one of the J

1 h fish rearing pond l sites. This has become ;

,; very popular with local i teachers and seems to be nn excellent " hands on" type of field trip, during which the children are taught t.s* SD4 some basic biological ,

principles. l l

An an extension of this 37 , ..

outreach philosophy, CPS volunteers

'4

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constructed a wildlife

.f ,

83 viewing platform 1 adjacent to the settling pond in the fall of 1991. This platform is very popular for the viewing of wildlife, including k adk. waterfowl, migratory birds, and deer.

(Photographer: Mike Monahan) l It is hoped that these types of environnental programs will ensure the accomplishment of our goal of becoming a corporate leader on environmental issues by demonstrating our commitment and encouraging a partnership with our customers and employees to improve the environment.

110

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I LIST OF REFERENCES o

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e.._ . _. _._ -. _.m. . . _ _ _ _ .___ _.._ ._._._ ___~._ - _ _.. _ _ _ _ . .

VII. LIST OF REFERREqE.E ANS175 American National Standards Institute, Inc., " Performance, Testing and Procedural Specifications for Thermoluminescent Dosimetry," ANSI N545-1975.

ASTM 75 American Society for Testing and-Materials, " Standard Recommended Practice for. Dealing with Outlying Observations," ASTM E178-75. ,

BR66 "Airmass, Streamlines and the Borea Forest," A. Bryson, Technical Report No.

24, University of Wisconsin; Department of Meteorology: Madison, Wisconsin, 1966.

CFR Code of Federa Regulations, Title 10, Part 20 (Nuclear Regulatory Commission).

CL91a CPS Semiannual Radioactive Effluent Release Report January 1, 1991 - June 30, 1991.

CL91b CPS Semiannual Radioactive Effluent Release Report July 1, 1991 - December 31, 1991.

DOC 90a " Local Climatological Data, Annual Summary with Comparative Data, Peoria, Illinois, 1990," U.S. Department of Commerce, NOAA, Asheville, North Carolina.

DOC 90b " Local Climatological Data, Annual Summary with Comparative Data, Springfield, Illinois, 1990," U.S.

Department of Commerce, NOAA, Asheville, North Carolina.

EI67 " Environmental Radioactivity," M.

Eisenbud, 1987.

EPA 72 " Natural Radon Exposure in the-United States," Donald T. Oakley, U.S.

Environmental Protection Agency.

ORP/SID 72-1, June 1972.

[

l L

111

. . . _ . _ _ . . . . _ _ _ . _ _ _ . _ _ _ _ _ . . ~ _

FRC60 Federal Radiation Council Report No. 1, "Dackground Material for the Development of Radiation Protection Standards," May

-13, 1960. '

-ICRP77 International Commission on Radiological Protect."n, Publication 2, _" Report of ,

Commit',es II on Permissible Dose for Internal Radiation," (1959) with 1962 Supplement issued in ICRP Publication 6; Publication 9, " Recommendations on

Radiation Exposure," (1965); ICRP Publication 7 (1965), amplifying specific recommendations of Publication 26 (1977).

ICRP84 International Commission on Radiation Protection, Publication No. 39 (1984),

4 " Principles of Limiting Exposure to the Public to Natural Sources of Radiation."

IPC91 Illinois Power Company, North Decatur Dispatch Office, 1991.

KA84 " Radioactivity in-the Environment:

Sources, Distribution and Surveillance,"

Ronald L. Kathren, 1984.

NCRP59 National Council on Radiation Protection and Measurements, Report No. 22,

" Maximum Permissible Body Burdens and Maximum Permissible Concentrations of Radionuclides in Air and Water for occupational Exposure," (Published as

, National Bureau of Standards Handbook

69, issued June 1959, superseding Handbook 52).

NCRP71 National Council-on Radiation Protection

" :- and Measurements, Report No. 39, " Basic Radiation Protection Criteria," January 1971.

NCRP75 National Council on Radiation Protection and Measurements, Report No. 44,

" Krypton-85 in the Atmosphere -

Accumulation, Biological Significance, and Control Technology," July 1975.

112

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

NCRP87a . National Council on Radiation Protection and Measurements, Report No. 91,

" Recommendations on Limits for Exposure to Ionizing Radiation," June 1987. -

NCRP87b National Council on Radiation Protection and Measurements, Report No. 93,

" Ionizing Radiation Exposure of the Population of the United States,"

September 1987.

NR90 National Research Council, 1990, Committee on Biological Effects of Ionizing Radiations (BEIR V), Board on Radiation Effects Research on Life Sciences, "The Effects of Exposure to Low Levels of Ionizing Radiation".

j NRC74 United States Nuclear Regulatory ;

i Commission, Regulatory Guide 5.36,

" Recommended Practice for Dealing with Outlying Observations," June 1974.

NRC75 United States Nuclear Regulatory Commission, Regulatory Guide 4.1,

" Programs for Monitoring Radioactivity in the Environs of Nuclear Power Plants," Revision 1, April 1975.

NRC77a United States Nuclear Regulatory Commission, Regulatory Guide 4.13,

" Performance, Testing and Procedural Specifications for Thermoluminescence 00simetry: Environmental Applications,"

Revision 1, July 1977.

l NRC77b United States Nuclear Regulatory l

Commission, Regulatory Guide 1.109,

" Calculation of Annual Dose to Man from Routine Releases of Reactor Effluents j for the Purpose of Evaluating Compliance with 10CFR Part 50, Appendix I,"

Revision 1, October 1977.

NRC79a United States Nuclear Regulatory Commission Branch Technical Position, '

"An_ Acceptable Radiological Environmental Monitoring Program,"

Revision 1, November 1979.

113

l NRC79b United States Nuclear Regulatory g Commission , Regulatory Guide 4.15,

" Quality Assurance for Radiological -.

Monitoring Programs (Norm Operations) - '

Effluent Streams and the Environment,"

Revision 1, February 1979.

KUREG86 Technical Specification, Clinton Power Station, Unit Nc. 1, Occket No. 50-461,

l Office of Nuclear Reactor Regulation, 1986. l NWS87- Nat Aonal Weather Service, Springfield, Illinois, 1987. ]

l PERI 88 "The Use of Diatoms (Periphyton) in Monitoring Light-Water Reactor I Radioactive Liquid Effluence in the Susquehanna River," Ruth Patrick and John M. Palms, 1988.

TEPM Analytical Procedures Manual, Teledyne Isotopes Midwest Laboratoyy (Northbrook, Illinois). 60062-4197.

USAR Illinois Pcwer, Clinton Power Station, Updated Safety Analyuit Report, Revision 2, September 1990.

114

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-APPENDIX A Exceptions to the REMP During 1991 I

115

d Data from the radiological analysis of environmental samples are routinely reviewed and evaluated by the clinton Power Station Radiological Environmental Group. This data is ;

checked for LLD compliance, anomalous values, quality control sample agreement, and any positive results which are inconsistent with expected results or which exceed any Offsite Dose Calculation-Manual reporting levels. Tablo A-1 lists the reporting levels for positive radioactivity concentrations in environmental samples required by the Clinton Power Station Offsite Dose Calculation Manual.

If an inconsistent result occurs, an investigation is initiated which may consist of some of the following actions:

Examine the collection data sheets for any indication of collection or delivery errors, tampering, vandalism arid equipment calibration or malfunctions due to electrical power failure, weather conditions, etc.

Perform statistical tests Examine previous data for trends Review other results from same sample media and different sample media Review control station data Review quality control or duplicate sample data Review CPS effluent reports Recount and/or reanalyze the sample Collect additional samples as necessary During 1991, no investigations were performed as a result of reaching any offsite Dose calculation Manual reporting level. Two LLD exceptions occurred during 1991 and are i

documented in Table A-2 of this appendix. Table D-19 lists

_the LLDs required by the Clinton Power Station Offsite Dose calculation Manual. Other sampling and analysis exceptions

.are listed in Table A-3 of this appendix.

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! TABLE A-1 I CPS REMP REPORilwG LEVEts toe PostflvE RAD 10ArilVITY COWCENTRATIDNS IN ENVIRONMENTAL SAM *tESa Water Airborne Particulate fish Milk food Products Analysis (pCi/l) or Ganes (pCl/ad) (pCl/kg, wet) (pCi/l) (pCl/kg, wet) }

h3 20,000* -- -- -- ---

i Mn 54 1,000 - 30,000 -- ---

Fe 59 400 - 10,000 --- -- .

I Co 58 1,000 -- 30,000 --- --

Co-60 300 ---

10,000 --- --

l 2n-65 300 --

20,000 - ---

Zrikb-95 400# --- - --* --

t 1 131 2** 0.9 --

3 100 l I

Cs-134 30 10 1,000 60 1,000 ;

?

ts 137 50 20 ?,000 70- 2,000 t

Ba/ta-140 200# --- --- 300 -

i i

For drinking water samples. This is the 40 CFR Part 141 value, if no drinking water ,

pathway exists, a value of 30,000 pci/l rey be used. j

{

(

- If no drinking water patnway evists, a value of 20 pci/l may be used. .

t l '

I l # Total f or parent and daughter.

I a inis list does not mean these nuclides are the only anes considered. Other nuelldes identified are also analyted and reported when applicable.

I 117

TABtf A 2 ANALYilCAL DESUt.TS Wf CM FAILED TO MEff THE RE0V!9ED ttD DV9tWG 1991 pate Samt.e Medits* AnatY$15 ,ReQUIPM tlD Obtained LtD tocatione 2/20/91 Al I-131 0.07 pcl/m3 0.12 pcl/m3 CL-3b 2/20/91 At 1 131 0.07 pCi/m 3 0.082 pCl/m3 CL 6 5 8

Refer to Table 4 for location description.

b LLD not reached due to low synple voltre.

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118 I

TABLE A-3 t

BAMPLING AND ANALYSIS EXCEPTIONS FOR 1991

1. January 2, 1991, to February 13, 1991 l

Two-liter grab sample obtained on a weekly basis at i

CL-91. Grab sample initiated because of a) ice formation in the vicinity, b) clogged / frozen line.

2. January 16, 1991 I

CL-1 elapsed timer was off 1.3 hours3.472222e-5 days 8.333333e-4 hours 4.960317e-6 weeks 1.1415e-6 months . Cause is suspected to be loss of power during an ice storm.

Indicated elapsed time was used for sample volume

calculation.

l 3. January 30, 1991 Grass samples were not collected due to snow cover.

l

4. February 6, 1991 Elapsed time at CL-6 did not function during the previous week. Apparently the timer gears did not engage. Since the air sample pump was running and the color of the particulate air filter appeared normal, a continuous run time of 163.9 hours1.041667e-4 days 0.0025 hours 1.488095e-5 weeks 3.4245e-6 months was assumed for sample volume calculation.

5. February 2 0, 1991 Electrical power was out to the air sample pumps at CL-3 and CL-6. Elapsed timers indicated 44.1 hours1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months at CL-3 and 66.2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for CL-6. CL-( had a blown fuse which was replaced. CL-3 had a broken electrical power wire from the breaker box. New wire was pulled to CL-3.

6. February 27, 1991 CL-6 air sample pump was found doenergized with the elapsed timer showing 0.2' hours. CL-6 had a blown

-fuse. The suspected fuse problem was actually due to a short circuit in the electrical wiring in the conduit i from the breaker box to the air sample station.

Station was rewired and placed back in service.

119 l

TABLP_A-3 (Cont'd)

7. February 27, November 26 and December 25, 1991 Grass samples not fresh green grass.

8. March 27, 1991 CL-15 air sampler elapsed timer was off by 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months .

Reason is suspected to be a loss of power during thunderstorms. The indicated elapsed time was used for sample volume calculations.

9. April 3, 1991 Air sampler elapsed timers for CL-4, CL-6 and CL-8 were off >0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months . Times were off by 2.3, 2.4 ur.d ?.0 hours0 days 0 hours 0 weeks 0 months respectively. Tae reason for the discrepancies is unknown. The indicati.d elapsed time was used for sample volume calculations.

10. Hay 15, 1991 CL-15 air sampler elapsed timer was off by 4.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months .

Reason is suspected to be a loss of power during thunderstorns. The indicated elapsed time was used for sample volume calculations.

11. June _26, 1991 No swiss chard was collected at Cl-115 due to deer eating plants to the ground. New seeds were planted on June 20, 1991 to replace the swiss chard eaten by deer.

12. July 3, 1991 The air sample pump at CL-7 was found seized. Elapsed timer was functioning properly and indicated the correct time. The total sample volume was calculated using the "as left" sample flow rate as the "as found" sample flow rate and the indicated elapsed time. The air sample pump was replaced.

Grass samples are normally analyzed wet. During winter months and-drought conditions, the grass will dry _up and die. Dry, dead grass has a i

moisture content much lower than that of fresh green grass. Analysis of dry dead grass may be biased.

l l

E l 120 l

TABLE A-3 (Cont'd)

13. July.31, 1991 No swiss chard collected at CL-115 and no lettuce was collected at CL-117. No lettuce remains at CL-117 for collection and swiss chard seeds planted at CL-:15 on June 20, 1991 did not grow.

14. August 6, 1991 TLD cage at CL-62 was found to be destroyed. Damage i appears to be from gunfire. The TLD suffered no

( apparent damage. The TLD cage was replaced and the TLD re-hung. Third quarter TLD results indicated no abnormalities for the CL-62 TLD.

15. August 28, 1991 No swiss chard collected at CL-115, no lettuce collected at CL-114, CL-115 or CL-117 and no cabbage collected at CL-117. Lettuce and cabbage samples not available due to being the end of the growing season. '

l Swiss chard not available as discussed in exceptier.

l' #12.

16. September 11, 1991 CL-1 air sampler elapsed timer was off by 3.0 hours0 days 0 hours 0 weeks 0 months .

Reason is suspected to be a loss of power during thunderstorms on September 9, 1991. The indicated elapsed time was used for sample volume calculations.

17. September 25, 1991 No swiss chard collected at CL-115, no lettuce collected-at CL-114, CL-115 or CL-117 and no cabbage collected at CL-115 or CL-117. Lettuce and cabbage samples not available due to being the end of the growing season. Swiss chard not available as discussed in exception #12.

18. September 26, 1991 The TLD pole for CL-48 was broken off at the ground and was found laying on the ground. Tne TLD was inside the locked cage but out of its plastic bag. There was no .

apparent damage to the TLD and 3rd quarter TLD results for CL-48 appeared to be normal. The suspected cause of the pole being broken was a farmer accidently hitting the pole during harvesting. New pole was installed on October 10, 1991 and the 4th quarter TLD was hung on the same date.

121

l TABLE'A-3 (Cont'd)

19. October 2, 1991 Air sampler elapsed timers for CL-2 and CL-3 were off

>0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months . Times were off by 2.0 and 2.2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months respectively. Reason is suspected to be a loss of electrical power. The indicated elapsed time was used !

for sample volume calculations.

20. November 13, 1991 Air sampler elapsed timers for CL-2 and CL-3 were off !

>0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months . Both times were off by 3.6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . Reason i is due to loss of electrical power while maintenance was performed on the 12 KV loop. The indicated elapsed time was used for sample volume calculations.

21. December 4, 1991 lio power was found at air sampler CL-11. Power was suspected to be lost due to snow blowing inal.de the breaker / fuse box during snowstorm. Power was restored to CL-11 on December 6, 1991 by drying out the breaker box and replacing the fuse. The elapsed timer reading and the "as left" flow rate used for the "as found" flow rate were used for sample volume calculations.

22. December 4, 1991 Air sampler elapsed timers for CL-1, CL-15 and CL-94 were off >0.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months . Times were off by 2.1, 7.6 and 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months respectively. Reason is a loss of power due to ice storm. The indicated elapsed time was used for sample volume calculations.

23. December 11, 1991 Air sampler elapsed time for CL-15 reading 000.0 hours0 days 0 hours 0 weeks 0 months .

Timer was replaced on December 12, 1991. Actual elapsed time was used for sample volume calculations.

24. January 2, 1992 CL-8 air sampler elapsed timer was off by 37.4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

Reason is due to a loss of electrical power for unknown reasons. The elapsed timer reading was used for sample volume calculations.

122

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

APPENDIX B REMP Bample Collection and Analysis Methods l __

1.

I i-123

1 TABLE B-1 Ct1NTON POWER STATION RADf0 LOGICAL ENVfRONMENTAL MONITORINO PROCliAM

SUMMARY

OF SAMPLE COttECTION AND ANALYSIS METMODS Approximate Teledyne Sa mte Sayle Size Procedure Procedure Analysis Medita samplino Nethod Collected Nu+er Atrstract t

Cross Beta '

AP Continuous air 280m3 T!ML-AP-02 samte comted on a low levet gas flow samling through proportiormt counter. '

4 filter media 1 p W Grab 7.61 T!PA-W(DS)-01 sr.mte evaporated on a etsintess steel i M 3 planchette for low-levet gas flow proportionat counting SV Crab 3.8L TIML-W(DS)-C1 sagte evaporated on a stainless steet planchette for low-level gas flow proportional comting SW Comosite 3.8l itML-WCDS)-01 samte evaporated on a stainless steel L

i l

planchette for low-levet gas flow proportfemat counting I

VE Grab 2.5kg T!ML-As-01 samte ashed for low-tevet gas flow proporticriat counting i BS Grab 1.5 2.0kg TIML-AB-01 sagte pulverized and dried for low-levet

gas flow proportierwet counting e

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EBt.E B-1 (Cont'd)

Approximate Teledyne sample Sacple size Procedure Procedure Analysis Medita sary;ing Methr<f collected ya,ber _ Abstract cross Beta SS Grab 1.5-2.0kg TIML-AB-01 Sanple puiverized and dried for tow-level (cont *d) ges fIow proportione1 counting DW Goeposite 3.81 TIML-k(Os)-01 samte evaporated on a stainless steel planchette for low-level gas flow pecportioneL counting g 50 Grab 1.Okg TIML-AB-01 samte pulverited and dried for low-Levet gas flow proportionat counting 4

Gama AP Corposi te 3640d TIML-Gs-01 Germaniun gance isotopic enstysis sp+ctroscopy i G Grab 1.0kg TIML-GS-01 Germantun game isotopic analysis W Grab 7.6L TIML-GT-01 Germeniun game isotopic analysis su Gomposite 3.8l TIML-GS-01 Germanius garas .'sotopic analysis VE Grab 2.%g TIML-GS-01 Germaniun gamn isotopic analysis BS Grab 1.5-2.Okg TIML-Gs 01 Germanius game isotopic analysis SS Greb 1.5-2.Ckg TIML-GS-01 Getmantun sama isotopic analysis i

TABtr B 1 (Cont'd)

Approximate Teled,m Sample Sartpte Sire'. Procedure Procedure Analysis Medita sancting Method Cottected Ntrber Atn t ree t Gama st crab 0.5kg !!ML-GS-Oi Germaniurs gaema isotopic anetysis Spectroscopy (cont'd) F Grab' 2.5kg TIML-GS-01 Germanium gama isotopic analysis i

ME Grab 3.Okg t'!ML-Gs-01 Gera:anlura gansna Isotopic analysis Du - Cwiraite 3.81 T!ML-GS-01 Germanitas gama isotop.: analysis H

SV Grab 3.81 TIML-CS-01 Germanius game isotopic analysis SO Grab 1.Okg TIML-CS-01 Germanitsa sama isotopic analysis M Grab 3.81 i!ML-GS-01 Germantus game isotopic analysis Oirect Radiation TLD Contir' w WA TIML-TLb-01 Integration of t'ne matty'stleuteted '

Exposure visitte photons Gross Alpha SW . Coeposite 3.81 TIML-WDS)-01 Sample evaporated on a stainless steet planct.ette for low-tevel gas flow proportienal comting W Grab 7.61 TIML-W(DS)-01 Sanple evaporated on a stainless steet

. pienchette fer low-tevet gas flow gwtlonat counting 1

- _ _ _ _ _ . _ _ _ - - - ~ _ _ - =. w

i TABLE 9-1 (Cmt'd) .j Approxirmate Teledyne Sarple $e@te Sire ProcedJre Procedure Analysis Meditn Sampling Method Cottected Wirtwr Abstract Gross Alpha as Oreb 1.5-2.0kg TIML-A8-01 saepte pulvertred ard driec for tow-levet ;

(cont'd! gas flow proportional counting ;

DU Coeposite 3.81 TIML-u(DS)-01 sapple evaporated en stainless steet ptanchette for iow-levet gas flow proportioneI counting i

g so Grab 1.0kg TIML-AS-01 Samte pulverized erd dried for tow-levet

M gas flow proportional counting 4 i Ss Crab 1.5-2.0kg TIML-Aa-01 sample putvertred and dried for low-tevet gas flow proportional ec4Jntir*1 i

Sr-90 BS crab 1.5-2.0kg TIML-sa-06 Nydrochloric acid teach atd low-level '

gas flow proportional counting ss Grab 1.5-2.0kg TIML-sR-06 Hydrochloric acid teach and low-level-gas flow proportional comting M Grab 3.81 TIMt-SR-07 sacote chemically seperated and erled for low-level gas flow proportional comting Tritim SW Corposi t e 3.81 TIML-T-92 Distillation followed by comting in a liquid ce!ntillation counter i

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Approximate leiedyne Sayte Sanple Sire Procedure Procedure Analysis Nedita Sampling Method Cottecte) Ntrter Abstract Tri t itsn OW Corpos i te 3.81 TIML-T-02 Olstittation followed tv comting in a (cont'd) tiquid se'ntittation comtee I

SW Crab 11.4l TIML-T-02 Distillation followd by comting in a liquid scintittetion counter

?

W Crab 22.81 TIML-T 02 Distit tation fottowed t / counting in a '

H tigaid scintit tation center

, N co SW Grab 3.81 TIML-T-02 Distillatien foltm.ed by counting in a ,

liq 2id scintillation counte' I-131 ME Grab 3kg TIML-CS-01 German!tse sama isotopic enalysis Al Continuous air 280m3 TIML-I-131-02 Germanium game isotopic analysis sampling through filter media'

$w Grab 3.81 T IML- I- 131-03 ton ev.hange and proportional beta counting W Crab 7.6L TIML-1-131-03 fon exc h nee and precortional beta counting G Grab 1.Okg TIML-GS-Oi Germanitse gama isotopic analysis !

M Grob 3.Bt TIML-t-131-01 ton exchange and proportional be o comting k

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J f f Mediun or . Type of Lower Limit att truficator' Location with Control hwter of

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i Bottom Sediments84-212 -

1.25(1/12) CL-89 1.25(1/2) LLD 0 (cont'd) -

3.6 mites kuE -

i 84-214 -

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0.62) u na-226 -

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] (0.51 - 2.83) 3.0 altes E4E (2.51 - 2.E3) (3.94 - 2.02) j 11-208 -

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(0.12 - 0.50) 3.6 rites sue (0.36 - 0.47) (0.11 - 0.16)

(cont'd) 0.21(14/14) CL-93 0.39(2/2) 0.16(2/2) 0 Pb-214 -

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4 Medlun or Type of Lower Limit Att Indicator Location with C mtrol Nuter of Pathway servied Analysis of locatims: Nichest Annual Meen ly sti m : Nonroutine j (Unit of fotaL Nutr* Detection Mean(f) Name Meantf) Mean(f) aeported Measurement) Performed (LLD) (Range) Distance ard Direction (Range) (Range) Meesurements i

{ soit 81-212 -

1.44(4/9) CL-1 1.69(1/1) LLD 0 3 (cont'd) (1.29 - 1.64) 1.8 miles W - I

+

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C.66(9/9) CL-1 1.13(1/1) 0.53(1/1) 0 I (0.51 - 1.13) 1.8 miles u -

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1.25(9/9) CL-1 1.61(1/t) 0.92(1/1) 0 H (0.80 - 1.61) 1.8 mites W - -

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Pb-214 -

1.02(9/C) Ct-1 1.36(1/1) 'J.66(1/1) 0 i (0.65 - 1.36) 1.8 miles W - -

I Ra-226 -

2.56(9/9) CL-1 3.40(1/1) 2.08(1/1) 0 l (1.45 - 3.40) 1.8 miles W - -

TL-208 i 1.16(9/9) CL-1 1.53(1/1) 0.86(1/1) 0 +

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f i

q (e) Mighest quarterly mean a

j (b) Values escluded due to insuf ficient sacpte volume cettected (c) (T) Treated well water sanple or (t!) Ur. treated wet t water sarple 4 (d) No indicator sapple location exists, no milk producing animals within 10 sites of CPS l (d) No control sanple. tocation exists

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-- - , --,. , . - - . . I

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TA9LE 8-3 (Cont'd) i 4

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, Meditsn or Type of Lowr Limit Att Indicator tocation with Control Atater of ,

j Pathway Sorried Analysis , of locat ons:

i Highest a m ist Mean tocati ms: 4cnroutine (Unit of Totat krter Cetection Mean(f) tame Mean(f) Mean(f) Reported Measurement) Performed (LLD) (Range) Distance end Direction (Range) (Range) easurements Ia f cottrn 1 totten 2 totum 3 Coltrn & Coturn 5 Cottrn 6 Cohsn 7 I

j TA9tf FwPLANAff0NS:

i

) Coltrn 1: The unit of Measurement describes eit the ntsnerical values for LLD, mean at:1 Range reported for a gx 'ticular sarple meditse. Essepte: i the Cross Beta LLD in AIR PARTICULATES is 0.01D 3pCi/m . Athreviations used are: %f/m3 = picoeurie per ciMc meter of septed air; g nR/ quarter = exposure measured for calendar quarter period; K i/t = picoeurie per titer of sapple; pCi/g a picocurie per !

A gram of sarple.

i 4 Cotten 2: The Types of Analyses are described as follows: Cama Spec = measurement of each radioisotope in a sanple u=ing Gama Spectros opy; a 1 Gross Seta = measurement of the radioactivity in a sarole by measuremmt of emitted betas - no determination cf trufiwident radioisotcpes is possible; Tritium = measurement of trititas (M-3) in sample by liquid scintittation counting method: TLD = direct

} measurement of gama esposure using thertncluminescent dosimeters. !

4 ,

f 4

Cottrn 3: LLD reported is the highest of those reported for each type of analysis during the year; if att analyses reported positive valt.:es, no t

l LLD is reported. j

)'

Coltsm 4: Sarples taken at Indicator Locations during an operational radiological envircrvnentet monitoring pregree (REMP) reliably measure the f quantities of any radioisotopes cycling through the patbueys to man from the nuclear station. The reported values are the mean or average for the year of ett serples of that type which had values greater than the LLD. *f" is the fraction af att the serples taken at all indicator locations for the meditsn which reported values greater than the LLD. Enerple: T results greater then tr_D out of 15 .

serples taken uould be repcried 7/15. The Range is the watues of the towest to highest samte results greater than LLD reported at j j att the indicator locations for thit mec tss.

i

Cottrn 5: The Mean, f-fraction and Range along with the name of the location, distance f rori the CPS gaseous ef f tuent stack in mites, and the i

tetter (s) rmme of the corpass sector in the direction of the sarple location f rora the CPS gaseous ef f tuent stack. The location with j l the highest annual mean is comared to both indicator and control tocations of the medias saaptes.

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_ ~ . . . _ . .

t f TAPtE 9-3 (Cont'd)

I I I

TABtf EVPL ANATIONS (Cont *d)

I i

t j Colum 6: Control tocations are sited in areas with tou ralstive deposition and/or disperstori f actors. Samte results are taed es reference }

i for the control location. !

Coltsm 7: WRC Regulations Cranch TechOcal Position, Rev.1, Noveeber 17M) include a table of radioisotope concentrations that, if esteeded 5

by confirmed samte ineasureeweits. Jcate that a honroutine Reported measurement exists. Such snessurenents regaire further ,

investigation to vatidate'th. 5;urces I>

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A,4 .-A44.h mm-" '" - WM -

Jaen.L.E AA W 4+a'e. M,-h -" - d mLAA &a W- J6_ yA& & , D A amM ,M LAM hM A_ A_m ,,,hAd6 4.h A.s e M , M A h ja a hwM J Ada._da, d, d A m_,

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APPENDIX C :

4 Glossary ,

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- i 149

GLOM hRY activation - the process in which stable atoms becomo radioactive atoms by absorbing noutrons.

ALARA - acronym for "As Low As Reasonably Achievablo" which ;

applies to many facets of nuclear power, i.e., radiation ,

exposure for personnel kept low, minimizes numbor/ activity of effluent dischargos.

alpha particle - a charged particle omitted from the nuclous ,

of an atom having a mass and chargo equal in magnitudo of a holium nuclous (2 proton and 2 noutrons),

atom - the smallest component of an olomont having all the proportion of an clomont. Comprised of protons, neutrons ,

and electrons such that the number of protons datorminen the olomont.

background radiation - source of radiation that mankind has no control of, such as cosmic (from the sun) and torrestrial (naturally occurring radioactivo c1cmonts).

beta particle - a charged particle cquivalent to an electron if negative or a positron if positivo, originating near the nuclous of an atom during radioactivo decay or fission.

control location - a sample collection location considered to be far enough away from Clinton power Station so as not i to be affected by station operations.

cosmic radiation - ponotrating ionizing radiation originating in outor space, curie (ci) - the unit of radioactivity equal to 2.2 r trillion disintegrations por minuto. >

dead water - water that contains no tritium.

dose - a quantity (total or accumulated) of ionizing radiation received, dose equivalent - a quantity used in radiation protection which expresses all radiations on a common scale for i calculating the offective absorbed doso (the unit of dose equivalent is the rem).

ecology - a branch of biology dealing with the relations between organisms and their environment.

150 i

i electromagnetic radiation - a travelling wave motion resulting from changing electric or magnetic fields. i Familiar sources of electromagnetic radiation range from ;

x-rays (and gammt rays) of short wavelength, througi the l ultraviolet, visible and infrared regions, to radar and ,

radiowaves of relatively long wavelength. All l electromagnetic radiation travels in a vacuum at the speed of light, element - one of 103 known chemical substances that cannot i be broken down further without changing its chemical properties.

environment - the aggregate of surrounding things, i conditions, or influtances. '

exposure - a measure of the ionization produced in air by '

x-ray or gamma radiation. Acute exposure is generally i

accepted to be large exposure received over a short period of time. Chronic exposure is exposure received over a long period of time, fission - process by which an atomic nur.aus splits into two smaller nuclei and teleases neutrons and energy.

fission products - the nuclei formed as part of the fissioning of an atomic nucleus. ,

gamma rays - high energy, short wavelength electromagnetic '

radiation emitted from the nucleus.

half-life - the time required for half of a given amount of a radionuclide to decay.

indicator location - a sample collection strategically placed to monitor cose rate or radioactive material that may i be the result of Clinton Power Station operations.

l lonization - the process by which a neutral atom or molecule acquires a positive or negative charge.

irradiation - exposure to radiation.

1 Lower Limit of Detection (LLD) - the smallest amount of sample activity that will give a net count for which there '

is a confidence at a predetermined level that the activity is present.

i microcurie - one millionth of a curic and represents 2.2 million decays per minute. ,

I neutron - one of the three basic parts of an atom which has no charge and is normally found in the nucleus (center) of an atom.

151

_ _ _ _ . . m._ _._ _._. __.____ . . _ _ _ . . -

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I nucleus - the conter of an atom containing protons and neutrons, that determines the atomic weight and contributes )

to the not positive charge of an atom. nuclei (plural) nuclides - atoms which all have the same atomic number and l mass number, i

periphyton - water plant life (i.e., algae). l radiation - the process by which energy is emitted from a nucleus as particles (alpha, beta, neutron) or waves (gamma),

l radionuclide - a radioactive species of an atom characterized by the constitution of its nucleus. The nuclear constitution is specified by the number of protons, number of neutrons, and energy content. )

rem - the unit of dose of any ionizing radiation that ;

, produces the same biological effects as a unit of absorbed ,

dose of ordinary x-rays. Acronym for Roentgen Equivalent l Man.

~

roentgen - a measure of ionization produced in air by x-ray or gamma radiation.

statistics - the science that deals with the collection, classification, analysis and interpretation of numerical data by use of mathematical theories of probabilities. ,

terrestrial radiation - source of radiation portaining to the ground (Earth's crust). ;

wind rose - a graphic representation indicating from which direction and speed the wind blew.

x-rays - high energy, short wavelength electromagnetic radiation, emitted from the electron shells of an atom.

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

. . - - . _ - - .- _ . - . . _ . . _ _ . _ _ . _ _ _____ _ _ _ ._ _ _.=_ _ . _._ _ _ _ _ __ _ .__ . _ . .

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APPENDIX D CPS Radiological Environmental Monitoring ,

Results During 1991 I

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, - , , , , . . . , , - - . - . . . . . . + . - - , , , . . ~ - , , . , , , . . . _ - .m.,-.._,,- .- ~ ..-_.. .,, - . ,. -- . - . . ,-. .~m. , , . - .-- - - - .

m.. _ . . _ _ _ _ _ . _ _ . _ _ _ ._. _ ...- _ _ __.. _ _ _ _ ~ . . . . . _ _ - - -

i i

t TABLt D i CR0ff BETA AND ltt1wt 131 A01[y.[U, l 16 AIN PAfficutAftt W 19j9 a 3 2a) '

(pCl/sr Cottection Period CL 1 CL 2 CL.3 CL*4 CL 6 01/02/91 01/09/91 0.022:0.004 0.021:0.004 0.023 0.004 0.021 0,004 0.02510.004 01/09-01/16 0.03410.003 0.034:0.003 0.034+0.003 0.035:0,003 0.0340.003 1 01/16 01/23 0.031 0.604 0.032+0.004 0.032 0.004 0.021 0.004 0.035+0.004 ;

01/23 01/30 0.022:0.004 0.026:0.004 0.027 0.004 0.026 0.004 0.028:0.004 01/30 02/06 0.027 0.004 0.027:0,004 0.026:0,004 0.02510.004 0.029:0.004 ;

02/06 02/13 0.0250,004 0 025 0.004 0.026:0,004 0.026 0.004 0.029:0.004 ;

0.029 0.010 b 0.034+0.007 b

=

C2/13-02/20 0.018:0.003 0.01810.003 0.01810.003 02/20 02/27 0.02310.004 0.023:0.0f'. 0 n19 0.004 0.020+0.004 NDe 07/27 03/06 0.021:0.003 0.02510 0"4 0.024+0.004 0.02610.004 0.0260.004 03/06 03/13 0.024;,0,004 0.027+0.004 0.024 0.004 0.025:0,004 0.021:0,004 -

03/13 03/20 0.011 0,003 0.016:0,003 0.01410.003 0.01510.003 0.013:0.003 03/20 03/27 0.02010 003 0.021 0.003 0.021:0.003 0.021:0.003 0.022:0.003 03/27 04/03 0.01810.003 0.02010.003 0.020:0.003 0.019 0.0GJ 0.01810.003 04/03 04/10 0.01810.003 0.t1910.003 0.01910 003 0.018:0.003 0.01910.003 ,

04/10 04/17 0.01130.002 0.01310.002 0.012,0.002 f 0.01410.002 0.012+0.002 04/17 04/24 0.018+0.004 Dal17:0.004 0.017:0.004 0.01610.004 0.013 0.003 04/24 05/01 0.01410,003 0.015+0.004 0.01310.003 0.012+0.J03 0.012+0.003 05/01 05/08 0.0140,003 0.018:0.003 0.016 0.003 0.016:0.003 0.012:0,003 -

05/08 05/15 0.01710.003 0.01910 004 0.02010 004 0.02010 004 0.01610 003 ;

05/15 05/22 0.01610 002 0.017:0.002 0.01810 002 0.016 0,002 0.014:0.002 05/22 05/29 0.012:0,003 0.012 0,003 0.017:0.003 0.013:0,003 0,0140.003 05/29-06/05 0.012:0.003 0.012:0,003 0.01710.003 0.012 0.003 0.014:0.003 06/05 06/12 0.016 0.002 0.0.7:0,002 0.02010.002 0.021*0.002 0.01410 002 .'

06/12-06/19 0.01610.003 0.018:0,003 0.022:0.004 0.02010.003 0.01610 003 06/19 06/26 0.022:0.003 0.0240,004 0.023+0.003 0.022:0,003 0.018 0,00?

06/26-07/03 0.018:0,002 0.021:0,003 0.021+0.003 0.021 0,003 0.02010 003 07/03-07/10 0.019:0.003 0.024:0.003 0.020:0,003 0.022:0.003 0.01810.002 07/10 07/17 0.018:0.003 0.023+0.003 0.024:0.003 0.01910.003 0.0160,003 07/17 07/24 0.0240,004 0.032 0.004 0.026 0,004 0.029:0,004 0.026 0.004 i 07/24 07/31 0.014:0,002 0.017:0.002 0.01810 002 0.01610 002 0.01410.002 07/31 08/07 0.0240.004 0.026:0,004 0.027:0.004 0.024+0.004 0.023+0.004

'. 08/07 08/14 0.019:0,003 0.020 7 003 0,021:0,003 0.01810.003 0.01610.003 08/14 08/21 0,023:0,003 0.027+0.004 0.02610 004' O.024:0.004 0.021 0.003

l. 08/21 08/28 0.0340.004 0.03610.004 0,035 0,004 0.031 0.004 0.025:0.003 08/28-09/04 0.01810.003 0.01810.003 0.01810.003 0.020:0,003 0.01810.003 09/04 09/11 0.021+0.003 0.024,0,004 f 0.023:0.003 0.022:0.003 0.016+0.003 09/11-09/18- 0.01810.003 0.021:0.004 0 021:0.004 0.022:0.004 0.01910.004

,. 09/15 09/23 0.01610.003 0.017:0,003 0.018:0.003 0.016 0.003 0.01610.003 l 09/25 10/02 0.0240.003 0.027+0.003 0.028:0.003 0.023:0.003 0.024:0.003 10/02 10/09 0.01910.003 0.01910.003 0.0190.003 0.01810.003 0.016+0.003 l1 l-l ll 154 p

'i___ _-~_.-_._ _._ _ _ _ . _ . _ . _ _ . . _ . - _ _ _ - m.

e

}JMJ 1 (Cent'<O Cottection Period f.7 CL 8 CL li d g.g5 g 94 01/02/,1 01'09/91 0.023:0.004 0.022:0.004 ).022:0.004 0.024:0.004 0.022:0,004 01/09 01/16 0.0350.003 0.035:0.003 0.034:0.0J3 0.036:0.003 0.036 0.003 01/16 01/23 0.031:0,003 0.029 0.003 0.032:0.004 0.032:0.004 0.035:0.004 01/23 01/30 0.021:0.004 0.023:0,004 0.024:0.004 0.024 0.004 0.025:0.004 01/30 02/06 0.023:0.004 0.021:0.004 0.021:0.004 0.024 0.004 0.030:0.004 02/06 02/13 0.02210 004 0.025:0.003 0.029 0,004 0.026:0.004 0.026:0.003 02/13 02/20 0.01910.003 0.01910.003 0.021:0,003 0.02010 003 0.014:0.003 -

02/20 02/27 0.01910.004 0.022:0.004 0.020:0.004 0.024:0.004 0.02410.004 02/27 03/06 0.023:0.004 0.024:0.004 0.027:0.004 0.025 0.004 0.027 0,004 03/06-03/13 0.018 0.004 0.027 0,004 0.025:0.004 0.026:0.004 0.025:0.004 03/13 03/20 e '*1:0.003 0.013 0.003 0.01410.003 0.014:0.00s 0.014:0,003 03C0 03/27 0 " t0.003 0.0250.003 0.02010,003 0.0210.003 0.022:0.003 03/27 04/03 0.9 10.003 0.021:0,003 0.017 0.003 0.022:0.003 0.021:0.003 04/03 04/10 0.016:0.003 0.015 0.003 0.02010.003 0.01910.003 0.01910 003 04/10 04/17 0.010:0,002 0.010:0.002 0.013:0.002 0.013 0.002 0.013:0.002 04/'7 04/24 0.01410 003 0.013:0,003 0.01410.003 0.015 0.003 0.015 0.003 04/24 05/01 0.011:0,003 0,014:0.003 0.016:0.004 0.012 0.003 0.01510 004 05/01 05/03 0.013:0.003 0.016 0,003 0.01710.J03 0.01710 003 0.015:0.003 05/03 05/15 0.0140.003 0.019 0.004 0.0.9 0.004 0.020:0.004 0.01910 004 05/15-05/22 0.012 0,002 0.01710.002 0.019 0.002 0.0150.002 ').015:0.002 05/22 05/29 0.007:0,003 0.006:0.003 0.013 0.003 0.014:0.003 0.012 0.003 05/29 06/05 0.012:0,003 0.015 0.003 0.01710.003 0.014 0.003 0.015:0,003 06/05 06/12 0.015:0.002 0.015 0,002 0.01610.002 0.01910.002 0.01610.002 06/12 06/19 0.012:0,003 0.019:0.003 0.018:0.003 0.01610 003 0.019:0.003 06/19 06/26 0,021 0,003 0.021:0.003 0.025 0.004 0.021:0.003 0.022:0.003 06/26-07/03 0.016 0.002 b 0.021 0.003 0 01910.002 0.01910.002 0.023:0.003 07/03 07/10 0.021 0.003 n.02010.003 0.0100.002 0.022:0.003 0.022:0.003 07/10-07/17 0.020 0,003 0.023:0.003 0.024:0.004 0.02010.003 0.024:0.004 07/17 07/24 0.025 0,004 0.0290.004 0.029:0.004 0.028:0.004 0.028:0.004 07/24-07/31 0.01910.002 0.017:0.002 0.021:0.002 0.017:0,002 0.018 0.002 07/31 08/07 0.028:0,004 0.02S10 004 0,0490,004 0.025:0,004 0.023:0,004 OS/07 OS/14 0.019 0.003 0.021:0.004 0.018:0.003 0.02010.003 0.01910,003 08/14 0E/21 0.025 0.004 0.025:0.004 0.024:0.004 0.026:0.004 0.024:0.004 08/21 08/25 0.031 0.004 0.031:0.004 0.n32 0.004 0.030:0,004 0.025 0.004 08/28 09/04 0.019:0.003 0.020:0.003 0.017 0.003 0.015 0.003 0.01610 003 09/04 09/11 0.022:0.003 0.023:0.004 0.022:0.003 0.021:0.v03 0.019 0.003 i

09/11 09/16 0.01810.003 0.01910.004 0.021:0,004 0.019:0.004 0.020:0.004 09/1B-09/25 0,020:0,000 0.015:0.003 0.017:0.003 0.01710.003 0.016 0.003 07/25 10/02 0.024:0.003 0.026:0,003 0.025:0.003 0.025:0,003 0.024:0.003 10/02-10/09 0.01810 003 0.019:0,003 0.017 b.003 0.021:0,003 0.01910.003 155

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

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it]Q_01 (Cont'et)

Cottection Feriod CL 1 CL*2 CL 3 CL 4 CL 6 i 10/09 10/16 0.01810.003 0.02010.003 0.022 0.004 0.02110.00a 0.01710.003 10/16 10/23 0.02910.003 0.02610.003 0.02810 003 0.02610.003 0.02410.003 '

10/23 10/30 0.01310.003 0.01310.003 0.01310.003 0.015+0.003 0.013*0.003 I 10/30 11/06 0.028+0.004

, 0.03110.004 0.03010.004 0.03110.004 0.029+0.004 ,

11/06 11/13 0.02610.004 0.02510.004 0.02610.004 0.030+0.004

, 0.02310.003 11/13 11/20 0.03310.004 0.037+0.004 0.03710.004 0.037+0.004 0.034+0.004 11/20 11/26 0.01810.004 0.015+0.003 0.01610.004 0.01810 004 0.017+0.004 11/26 12/04' O.02610.003 0.02610 004 0.02410 004 0.02010.003 0.02310.003 12/04 12/11f 0.02710.004 0.028+0.004 0.03110.004 0.03210.004 0.02810.004 ;

12/11 12/18 0.02410.004 0.02710.004 0.026+0.004 0.02410.004 0.02210.003 12/18 12/25 0.01810.003 0.01810.003 0.01910.004 0.019+0.004 0.01810.003 ;

12/2$/91+01/02/92 0.02810.003 0.027+0.003 0.02710.003 0.02610.003 0.02710.003 ,

Collection Period CL 7 CL M CL 11d CL 15 C.-94 10/09 10/16 0.022:0.004 0.02210.004 0.02210.004 0.018+0.003 0.01910.003 10/16*10/23 0.02210.003 0.027*0_003, 0.026*0.003 0.026+0.003 0.02710.003 10/23 10/30 0.01010 003 0.01410.003 0.01310 003 0.01210 003 0.01410.003 ,

10/30 11/06 0.02310.004 0.02810.004 0.02610.004 0.02810.004 0.03010 004

, 11/06 11/13 0.02110 003 0.02910.004 0.02510.004 0.02510 004 0.026+0.004 11/13 11/20 0.033*0.004 0.03510.004 0.04110.004 0.03510.004 0.036+0.004 11/20 11/26 0.01410.003 0.016+0.004 0.01740.004 0.01810.004 0.015+0.003 l 11/26 12/04' O.02510.003 0.024+0.003 0.02610.004 0.02310.004 0.0294,0.003 12/04 12/11f 0.03 10.004 0.02810.004 0,02710.005 0.02810 004 0.03410.004 12/11 12/18 0.024 0.004 - 0.02510.004 0.07:10.004 0.01810.003 0.02710.004 12/18 12/25 0.01810.003 0.0211,0.004 0.0d10004 0.017*0.003 0,02010.004 4

12/25/91 01/02/92 0.027+0.003 0.03410 004 0.032+0.004 0.028+0.003 0.03010 004 a at t 1 131 activity is +0.07 pcl/m untess 3 otherwise noted in Table A 2 l

b unreliable result, escluded f rom the rean (see Tabte A.3 for explanation) i

( c n data. Clectriest supply prettt:n d control locat .;ther locations are indicators i

l e CL-4. CL-6 ard CL 8 collection period was 81/26 12/05

('-

f CL 4. CL 6 and Ct. 8 cettection period was 12/05 12/11 f

156 '

, .. -. - ~ . _ . - . . . - . _ _ . - - -. ~ - .- ~ . - ~. ~..--a~.n.u.~--- .

i TABLE D 2

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CAMWA 1$0thPIC ACflVITT IN COMPOSITED AIR PARilCULAff FilifRy (pCl/m3 :2a). -

1!Lt Collection Datt Be 7

- CL 1 01/02/91 to 04/03/91 0.052 0.013 '

CL 2 01/02/91 to 0/3/91 0.066+0.014 CL 3 01/02/91 to 1 J O /91 0.06310.009 CL 4 01/02/91 to 04/61/91 0.053 0,012 CL-6 01/02/91 to 04/03/91 0.05210.012 CL 7- 01/02/91 ta 04/M/91 0.059:0.016 CL-8 01/02/91 to 04/03/91 0.047 0.012 CL 11 01/02/91 to 04/03/91 _0.059:0,012 CL-15 01/02/91 to 04/03/91 0.06010 009 CL 94 01/02/91 to 04/03/91 0.058:0,007 CL 1 04/03/91 to 07/03/91 0.055:0.011 CL 2 04/03/91.to 07/03/91 0.055:0.014 CL 3 04/03/91 to 07/03/91 0.067:0.016 CL 4 04/03/91 to c7/03/91 0.062:0.0?8 CL-6 04/03/91 to 07/03/91 0.053:0.016 Ct-7 04/03/91 to 07/03/91 0.041 0.012 CL-8 04/03/91 to 07/03/91 0.061:0.015 >

CL 11 04/03/91 to 07/03/91 0.050 0,018 CL-15 04/03/91 to 07/03/91 0.059 0.020 CL 94 04/03/91 to 07/03/91 0.077:0.015 CL-1 07/03/91 to 10/02/91 0.057 0.013 CL-2 07/03/91 to 10/02/91 0.058:0.009 CL 3 07/03/91 to 10/02/91 0.067:0,013 CL-4 07/03/91 to 10/02/91 0.c,3:0.008 CL 6 07/03/91 to 10/02/91 0.030+0.004 CL-7 07/03/91 to 10/02/91 0.040+0.008 CL-8 07/03/91 to 10/02/91 0.061+0.012 CL-11 07/03/91 to 10/02/91 0.07010.014 CL-15 07/03/91 to 10/02/91 0.045:0.015 CL-94 07/03/91 to 10/02/91 0.049:0.016 CL 1 10/02/91 to 01/02/92 0.038 0.007 CL 2 10/02/91 to 01/02/92 0.044:0.009

, CL ' 10/02/91 to 01/02/92 0.044:0.009 CL-4 10/CD 91 to 01/02/92 0.043+0.008 CL 6 10 6 /91 to 01/02/92 0.030:0.009 CL-7 10/02/o1 to 01/02/92 0.040:0.008 CL 8 10/02/91 to 01/02/92 0.04210.010 CL-11 10/02/91 to 01/02/92 0.067 0.018 CL 15 10/02/91 to 01/02/02 0.04d:0.009 ,

CL 94 10/02/91 to 01/02/92 0.04610.010 l

Only ganria emitters detected tre reported; typical LLD values are found in Table 0-20.

157

,_.mmm.._ _ .__ -_~ ~ _ . _ . . ... _ . _ - _-- .. . -. .- _ .__... ~ . _.

TARtt D-3 t 1991 CPS REMP 00ARTFRLY'110 RESUtt$

t@/91 Days (ht-t Ernosure)

Location ist Otr 2nd otr 3rd Otr 4th Otr CL-1 14.5:0.4 17.0 0.6 16.210.4 17.4+p CL 2 15.7+0.8 17.0:0.4 17 YJ.9 17.' 'l CL 3 14.4:0.6 17.6 0.8 16.o;0.6 17. - :0 CL 4 -15.810.8 16.4 0,4 17.7+0.8 17.3; .-

CL 5~ 16.710.9 16.2 0,5 19.7 1.3 17.3 0.6 CL'6 13.110.5 14.8+0.3 14.6 0.6 16.110 4 CL 7 14.6+0.4 18.310.6 16.410.7 19.210,5 CL 8 15.811.0 17.2:1.1 18.6:0.5 17.710 4 CL 11e 14.3 0.3 16.3:0.4 15.8:0.5 16.210.2 CL 15 11.6:0.3 12.2+0.3. 13.4:0.3 13.010 7 CL 20 14.510.5 18.0:0.7 17.110.3 17.7 0.9 CL 21 15.6 0.5 17.0+0.3 18.61 0.8 18.4+0.9 CL 22 15.310.7 17.3+0.6 17.411 1 18.2+0.4 CL 23 12.0:0.7 12.810.4 13.5:0.8 14.010.4 C'. 24 15.810.4 17.; 0.7 18.210.7 18.0f.0.7 CL 25 10.910.3 13.1 0.4 12.1+0.5 14.210 7 CL-26 13.6:0.4 15.4 0.5 14.7:0.9 15.9:0.3 CL 27 14.510.3 16.7:0.5 15.9:0.4 17.0:0.4 CL 28 15.7 0.9 17.3:0.4 18.011.0 18.510.6 CL 29 14.6:0.5 18.010.6 17.0:0.6 19.3+0.3 CL-30 15.6:0.4 20.810.8 17.310.5 21.210.5 +

CL 31 1.5 0.7 16.4:0.5 15.3+0.7 17.2:0,2 CL 32 . 2 10.4 17.70.6 16.5:0.3 18.4 0,4 CL-33e 15.4 0.4 19.910.7 19.010.7 21.410.4 CL-34 17.2f,0.5 24.7:1.1 21.0:0.7 22.410.3 CL 35 15.310.6 16.910.9 17.210 8 16.30.4

.CL-36 14.010.4 17.310.7 16.7:0.3 17.9:0.4 CL 37 14.0 0.3 18.010.6 16.6 0,5 18.211 2 CL+33 15.8+0.4 13 6+0.8

. 18.411.0 19.210.8 CL 39 13.410.3- 16.210.4 14.7,0.5 3 16.3:0.3 CL 40 14.9:0.7 17.5,0.7 3 16.510.9 16.8 0.5 CL 41 14.7:0.4 17.710.4 17.3:0.9 17.4 0.4 CL-42 13.0:0.6 15.610 3 15.9,0.6 f 16.110.4 CL 43 14.5 0.4 17.9 + 1.1 17.010.7 18.0 0.5 CL 44 16.4:0.8 18.1 0.6 19.510.7 19.110.4 CL-45 15.0:0.5 18.810.5 18.210.8 19.9:1.1 CL 46 13.6:0.4 16.7+0.3 17.6:1.1 17.710 3 CL-47 15.9:1.0 19.0:0,9 19.1+0.7- 19.1:0.7

. CL-48 14.2+0.3 17.210.5 16.9 0.6 19.611.1 CL 49 15.70.5 19.3 0.4 18.30,4 20.110.7

-CL 50 15.0:0.2 19.8:1.2 17.410.5 19.810.3 CL-51 16.2 0.6 19.5+0.8 18.4 0,5 19.9:1.1 CL-52 16.210.6 18.110.7 18.810.6 19.5:1.2 CL 53 13.010,3. 16.510 3 16.120.6 17.9.0.4 3

CL-54 14.810.5 17.4 0.4 16.8:0.7 18.6:0.4 CL-55 14.7 0.4 16.210 4 16.820.7 17.0 1.1 158

.-. - - - . . - - ~ . _ , . . - ~ , - - - . - - . . = ...--.=..-~~....-~.-_-..---a_.

1AstE D 3 (Cont'd) nd/91 Days (Net Entv>sure)

Loestion 1st otr 2rwt otr 3rd otr 4th ctr CL 56 14.610.5 17.7:0.8 16.9:0.6 17.9:0 4

~CL 57 14.B 0.7 17.0:0.4 17.20.8 17.7 0.6 CL 58 14.2;,0.4 17.0 0.6 15.810.6 17.310 6 CL 59 15.3 0.3 16.5:0.5 16.9 0.5 16.610.4 CL-60 15.9 1.1 18.0;,0.6 17.3 0.9 19.2t1.0 CL 61 15.9 1.0 17.2:0.5 18.211.2 19.3:1.2 CL 62 15.8:0.6 18.4:0.7 17.5 0.5 19.9:0.7 CL-63 17.1:0.5 20.110.9 19.210.3 21.4:0.6

, CL 64 16.911.1 18.7,0.7 18.9:1.2 20.4 1.4 CL 65 16.710.8 20.4 1.5 19.010.8 20.9:0.7 CL 66 13.4 0.4 16.2,0.9 14.0:0,5 17.7 0.5 CL 67 14.B:0.7 15.9:0.4 16.31 0.7 17.310.4 CL 68 15.6;,0.8 17.410 6 17.5 0.9 19.7 1.0 CL 49 - 15.4:0.9 17.3;,1.0 to.C:0.6 18.2:0.6 CL 70 12.0:0.5 16.2:0.5 13.5:0.7 17.8:0.3 CL 71 15.9:1,0 16.210.9 17.8 1.2 17.410.5 CL-72 13.7:0.3 15.010.6 16.0 0.6 16.6:0.6 CL 73 16.4;,1.2 15.5 1.1 18.9:0.9 20.5:1.1 CL-74 14.310.4 16.43.3 16.310 5 17.9;,0.6 CL 75 . 16.3:0.8 17.0:0.4 17.9 0.7 18.910.4 C'. 76 15.40.7 16.210.3 16.510.8 18.4 0.6 CL 77 14.6 0.6 15.0:0.5 17.1:0.6 16.5 0.5 i CL 78 13.7 0.5 16,810.4 16.8:0,5 17.310.4 CL-79 15.0:0.5 17.210.7 17.9:0.6 19.2:0.5 '

CL-80 15.7:0.6 16.7:0.7 18.10.8 18.210.7 CL 81 16.5:0.9 18.9:0.5 19.1:1.1 21.0 0.8 CL 82 14.7 0,3 17.8 0.9 16.7:0.6 19.4:1.4 CL 83 1 6.6:0.6 18.6 0,5 19.0;,0,6 19.7:0.9 C? S4 15.210.5 17.1:0.5 16.510.5 17.8:0,4 C1 85 15.510.5 17.6 0.6 18.410.4 18.4;,0.3 CL*B6 16 3t1.0 16.6:0.7 18.1 0.9 18.0 0.4 a CL 87 ' ' 1:1.2 - 18.2:1.3 19.81.2 19.7:0.9 CL.95a ga b WD D 16.9:,0.7 16.810.5 CL-96a we b yo b 15.4;0.5 14.410.5

' b CL-97a hD b hD 15.8 0.8 9.6 0.2 CL 109 13.6:0.5 16.110 7 15.210.8 16.8 0,5 CL 110 15.4 0.6 16.2:0.5 17.7:0.6 _17.2 0,5 CL 111 15.110.5 10.7:0.3 17.410.8 10.3;0.2 CL 112 16.210.6 16.0;,0.6 18.4:0.8 .16.7:0.6 CL-113 15.410.8 16.8 0.7 19.1 0.8 18.0:0.8-Mean ,s.d. 15.0;'.3 17.211.8 17.1:1.6 17.9:2.1 a control location b ND = No data. New location, TLD not placed until beginning of 3rd Ctr.

159

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

TABLE 0-4 SURFACE WATER 090S$ BETA AND GAMMA

ISof0Plc AcilvitY (pCl/L12a)

Collection Gross L 0cet f ori Date Bete.

CL 9 01/30/91 4.4:0.4 CL-10 01/30/91 3.910.3 CL 13 01/30/91 2.910.4 CL 9 02/27/91 1.6+0.3 CL 10 02/27/91 1.3:0.5 CL-13 02/27/91 2.6:0.6 CL-9 03/27/91 1.810.4 CL-10 03/27/91 2.510.4 CL-13 03/27/91 2.1:0.2 -[

CL-v 04/24/91 2.6:0.4 CL 10 04/24/91 2.3:0.6 ,

CL 13 04/24/91. 1.710.6 CL 9 05/29/91 2.4:0.7 ,

CL 10 05/29/91 2.510.3 CL 13 05/29/91 2.6:0.7 CL 9 06/26/91 2.610 4 CL 10 06/26/91 2.4 0.3 CL 13 06/26/91 2.4:0.2 CL-9 07/31/91 2.9:0.4 CL 10 07/31/91- 2.1 0.4 CL 13 07/31/91 3.210.4 CL 9 C1,/28/91 3.010 6 CL 10' 08/28/91 2.210.6 CL-13 05/28/91 2.3 0.6 CL-9 09/25/91 2,4+0.7 C2. 10 09/25/91 3.210.3 CL-13 09/25/91 3.8 0.8 CL-9 10/30/91 2.710.4 -

CL-10 10/3D/91 2.4:0,4 CL 13- 10/30/91 2.7 0.6 CL 9 11/26/91 2.4 0.6 CL-10 11/26/91 2.510.6 CL-13 11/26/91 2.00.6-CL-9 12/25/91 2.7 0.4 CL-10 12/25/91 2.) 0.4

- CL-13 12/25/91 2.510 2 Only gama emitters detected are reported; typical LLO values are found in Table 0-20.

j CL 10 is a control location.

l 160

, ,. a ~ ,< -, ,..,c - n , ,,, _. . < - . nw, -- ,vr ~

. x. __ _ . . . _ . _ _ _ .. . . . . _ _ . . . , _ , _ - . - . . . - . . - . _ _ ~ _ . . . _ . . _ . . . _ . _ , . _ - . . _ ~ . _ _ _ _ . . _ _ . . _ - . .

ji TABLE 0 5 4

SUDFACE WATER CROS$ BETA. CROSS ALPHA. 1 111 HD CAMMA* ISOTOPlc AttIVITY-(pCl/l*2a)

Cottection Gross e Gross L0cetfoq Date A t rhe Beta 1,Q1 b CL-90 12/26/90 to 01/30/91 0.71').4 2.8+0.4

> CL-90 01/30/91 to 02/27/91 3.0+0.6,, 5 CL 90_ 02/27/91 to 03/27/91 2.3+0.4 CL 90 03/27/91 to 04/24/91 1.410.5 3.310 4

, CL 90 04/24/91 to 05/29/91 2.2+0.3 CL 90 05/29/91 to 06/26/91 1.110.5 2.9:0.4 CL 90 f4/26/91 to 07/31/91 1.110.5 3.410.4

=ct-90 07/31/91 to 08/2S/91 2.610.6 '

CL 90 08/28/91 to 09/25/91 3.110 4 CL*90 09/25/91 to 10/30/91 2.B+0.4 CL 90 10/30/91 to 11/26/91 0.710.4 2.410 4 CL-90 11/26/91 t. 12/25/91 3.3:0.4 i 1

i d

I.

L t

Only gama emitters detected are reported; typical LLD values are foud in Table 0-20.

- e only gross alpha detected is reported; typical LLD values are fourd in (able D 2C-b only 1-131 detected is reported; typical LLD values are found in Table D-20.

161

TABLE D 6 5

SURF ACE WATElt CROSS BET A. CDOSS ALPHA. TRititM AWD CAMMA* 150f 0Plc ACTIVITY (pC1/L20 Cottection Crossa ,b grogge Location Date Alpha Beta Tritiuma CL-91 12/26/90 to 01/30/91 ?.5:0.3 CL-92 12/26/90 to 01/30/91 3.310.4 ,

CL 93' 01/30/91 3.7 0.9 CL 91- 01/30/91 to 02/27/91 1.0:0.3 ]

CL 92 01/30/91 to 02/27/91 2.110.3 j CL 93 02/27/91 4.211 7 CL 91 02/27/91 to 03/27/91 0.8:0.5 1.3:0.3 -

CL 02/27/91 to 03/27/91 2.1 0.3 CL 93 03/27/91 3.5 1.2 CL-91 03/27/91 to 04/24/91 1.6:0.3 CL 92l 03/27/91 to 04/24/91 2.210.4 CL-93 04/24/91 4.8 1.2 CL 91 04/24/91_to 05/29/91 2.4 0.4 CL 92 04/24/91 to 05/29/91 2.6:0.6 CL-93 05/29/91 2.4 1.8 i CL-91 05/29/91 to 06/26/91 2.4:0.4 CL 92 05/29/91 to 06/26/91 2.6:0.4 CL-93 06/26/91 2.6:1.9 CL41 06/26/91 to 07/31/91 1.8:0.4 3.2:0.4 tt 92 06/26/91 to 07/31/91 2.6:0.4 CL 93 07/31/91 CL 91 07/31/91 to 08/28/91 2.4:0.4 CL 92 07/31/91 to 08/28/91 2.310.6 CL 93 08/28/91 CL 91- 08/28/91 to 09/25/91 1.3 0.4 4.8:0,4 CL-92 08/23/91 to 09/25/91 6.010.6

~

CL 93 09/25/91 2.611.2 Cl-91 09/25/91 to 10/30/91 0.90.4 4o8:0.4 CL-92 09/25/91 to 10/30/91 2.9:0.6 CL-93 10/30/91 2.211.2 CL 91 10/30/91 to 11/26/91 0.610.4 2.4:0.4 CL 92 10/30/91 to 11/26/91 2.310.4 CL 93 -11/26/91 2.2 1.2 CL 91 11/26/91 o 12/25/91 1.1:0.6 2.6:0.4 CL-92 11/26/91 to 12/25/91 2.710.7 CL 93 12/25/91 2.0 1.2 only sarmia emitters detected are reported; typical LLO values are fourd in Table D 20.

. Only gross alpha, gross beta and tritium detected are reported; typicot LLD values are found in l-Table 0-20.

b Cross alph a analysis only required for CL-91.

162

l I

i l

TAILLE D-7 j l

SURFACE WATER OUARTERLY TRITIUM

COMPOSITE '

(pCi/112,)

J_9j!1 CL-9 CL-10." CL-13 CL-90 1 1st Qtr <LLD <LLD <LLD 216 102 2nd Qtr <LLD <LLD <LLD <LLD 3rd Qtr <LLD <LLD <LLD <LLD 4th Qtr <LLD <LLD <LLD <LLD i a control location l

t l

TABLE D-8 WELL WATER OUARTERLY TRITIUM

COMPOSITE (pCi/li2,)

1991 CL-7 CL-12 Untreated CL-12 Treated 1st Qtr <LLD <LLD <LLD 2nd Qtr <LLD <LLD <LLD 3rd Qtr <LLD <LLD <LLD l 4th Qtr <LLD <LLD <LLD l

Only tritium detected is reported; typical LLD values are found in Table D-20.

163 I

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

b TABLE D 9 WEtt VATER GROSS BETA. CRO$$ ALPHA, I 131C-AND CAuMA* Isotopic ACflV17Y (pCl/l:2a)

Collection crossb Cross b a

tocattog cate Alpha Beta 'l 131 b ,C CL 7D 01/02/91 CL 12u' 01/02/91 CL 12t 01/02/91 CL TD 01/16/91 CL 12u 01/16/91 CL 12t 01/16/91 CL 7D 01/30/91 CL 12u 01/30/91 CL 12t 01/30/91 CL 7D 01/02/91, 01/16/91 and 01/30/91 0.9:0.6 1.1:0,4 CL-12u 01/02/91, 01/16/91 and 01/30/91 2.310.9 CL 12t 01/02/91, 01/16/91 and 01/30/91 4.010.9 CL 7D ~ 02/13/91 CL 12u. 02/13/91 CL 12t 02/13/91 i CL-7D 02/27/91 CL 12u -02/27/91 CL 12t 02/27/91 -

Ct-7D 02/13/91 and 02/27/91 1.2 0.6 CL-12u 02/13/91 and 02/27/91 CL 12t 02/13/91 and 02/27/91 3.21.2

. CL-7D 03/13/91

~CL 12u '03/13/91 CL 12t 03/13/91 .

CL 7D 03/27/91 CL-12u 03/27/91 CL 12t 03/27/91 CL-70 -03/13/91 and 03/27/91 1.20.4 CL 12u 03/13/91 and 03/27/91 1.40.8 CL-12t 03/13/91 and 03/27/91 - 2.6:0.9 i

i

Only gamma emitters detected are reported; typical LLD values are found in Table D 20.

a The "u" and "t" found after CL 12 denote " untreated" and " treated".

b only gross alpha, gross beta, and 1-131 detected are reported; typical LLD values are found in Table 0-20.

e only 1-131 analysis is perf ormed on semi-mor .hly samples. l 164

1 ABtt 0 9 (cont'd)

VELL VatEt C#0SS BET A, CROSS ALPHA. 1-131C AND CAMMA* ISOTOPIC AtitVITY (pci/ t t2a )

Collection Gross b Cross b Location a Date Atcha Bete 1-131b ,e Ct 7D D4/10/91 CL-12a 04/10/91 CL 12t 04/10/91 CL- 7D 04/24/91 CL-12u 04/24/91 CL-12t D4/24/91 __

CL 7D 04/10/91 and 04/24/91 0.910.3 CL-12u 04/10/91 and D4/24/91 2.110.9 CL-12t 04/10/91 and 04/24/91 3.010 9 CL 7D 05/D8/91 CL-12u 05/08/91 CL-12t 05/08/91 CL- 7D 05/22/91 CL 12u 05/22/91 CL 12t 05/22/91 CL 7D 05/08/91 and 05/22/91 0.910.4 CL 12u 05/08/91 and 05/22/91 3.110.9 CL-12t 05/08/91 and 05/22/91 1.710.8 CL 70 06/05/91 CL-12u 06/C5/91 CL-12t 06/05/91 CL-7D 06/19/91 CL-12u 06/19/91 CL-12t 06/19/91 CL - 7D 06/05/91 and 06/19/91 1.410.4 -

CL-12u 06/05/91 and 06/19/91 2.910.9 Ct 12t 06/05/91 and 06/19/91 2.11u.9 CL-7D 07/03/91 CL-12u 07/03/91 CL-12t 07/03/91 CL-7D 07/17/91 CL-12u 07/17/91 CL-12t 07/17/91 CL-7D 07/31/91 CL-12a 07/31/91 CL-12t 07/31/91

Only gamna emitters detected are reported; typical LLD values are found in Table 0 20.

a the "u" and "t" found after CL-12 denote " untreated" and " treated".

b Only gross alpha, gross beta, and 1 131 detected are reported; typical LLD values are f ound in Table 0 20.

c only I-131 analysis is perf ormed on semi-monthly samples.

165

.- - - ~ . ~ . . ~ _ . . . . . . ..- __~. .~ .-._.---~...-..~---n 14BLE 0 9 (cont'd) 1-W!1L WATER GROSS BETA. C#0SS ALPHA. 1-131c AND CAMMA' !$0topft Activity (pCl/t:2a) .

Cottection Gross b Cross b Location

Date Alnha Beta 1 ill b CL 7D 07/03/91, 07/17/91, 07/31/91 1.0:0.4 CL 12u 07/03/91, 07/17/91, 07/31/91 CL-12t 07/03/91, 07/17/91, 07/31/91 2.710.9 CL 7D 08/14/91 ,

CL 12u 08/14/91 CL 12t 08/14/91 CL 7D DS/28/91 CL 12u 08/28/91 CL 12t 08/25/91 CL 7D 08/14/91, D8/28/91 1.1 0.7 CL 12u 08/14/91, 08/28/91 2.5:0.9 CL-12t 08/14/91, 08/23/91 3.6+1.5 CL-7D 09/12/91 CL ic_. 09/12/91 CL 12t 09/12/91 CL 7D 09/25/91 CL 12u 09/25/91 CL'12t 09/25/91 1 CL 7D 09/12/91 and 09/25/91 1.5 0.4 CL 12u 09/12/91 and 09/25/91 1.5 0.8 CL-12t 09/12/91 and 09/25/91 2.9:0.9 CL 70. 10/09/91 CL-12u 10/09/91 CL 12t 10/09/91 CL-7D 10/23/91 CL 12u- 10/23/91 CL-12t 10/23/91 CL 7D 10/09/91 and 10/23/91 0.3 0.2 2.210.5 CL 12u 10/09/91 and 10/23/91 3.210.9 CL 12t 10/09/91 and 10/23/91 2.8 0.9 l'

l I

Only gamma emitters detected are reported; typical LLD values are found in Table 0-20.

. a The "u" and ."t" found af ter CL 12 denote " untreated" and " treated".

b only gross alpha, gross beta, and 1 131 detected are reported; typical LtD values are found in Table D 20.

c Only 1-131 analysis is perforned on sem! unthly samples.

166

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

l TABLE D 9 feont'd)

W tt W4tER GROS $ BETA ' CROSS ALPHA, 1 131C AND CAMMA' !$0f0Plc ACTIVITY l (pct /112a) l Collection Grossb Gross b

[oc a t i on' Date A l rea _ jfit_ 1-131b CL 7D 11/06/91 CL 12u 11/06/91

_ CL 12t 11/06/91 CL 7D 11/20/91 CL 12u 11/20/91 CL 12t 11/20/91 Ct TD 11/06/91 and 11/20/91 1.810 5 l CL 12u 11/06/91 and 11/20/91 1.410.8

! CL 12t 11/06/91 and 11/20/91 2.4:0.9

(. CL-?D 12/04/91 CL 12u 12/04/91 CL 12t 12/04/91 CL B 12/18/91

/ CL 12u 12/18/91 l

CL 12t 12/18/91 CL-7D 12/04/91 and 12/18/91 CL 12u 12/04/91 and 12/18/91 1.410.8 CL 12t 12/04/91 and 12/18/91 2.6:0.6 l

.

Only gama enitters detected are reported; typical LLD values are found in Table 0-20.

a The "u" and "t" found after CL-12 denote a untreated" and " treated".

l b Only gross alpha, gross beta, and 1 131 detected are reported; typical LLD values are found in Table D 20.

c Only 1-131 analysis is performed on semi rcnthly sareptes.

167

. . . . . . - ~ . - - . ~ . . . ..,--.---~,...~..___.-....._~.~~~_,,-..,n.. . . . -- ~ .

ut 1A.E1E_Ed h0lNKIN0 WATER C#0$$ BETA. C#0t$ ALPHA. TRITitMa AWD CAMMA* ISOTDPlc ACTIVITY (pcl/112a)

Date- Cross b Gross b locetion Coll ected A t r6a . Beta Tritiumb CL 14 01/30/91 2.0:0.2 CL 14- 02/27/91 1.5 0.1 ,

CL 14 03/27/91 1.5 0.2 CL 14 CornposI te CL 14 04/24/91 1.310.1 CL-14 05/29/91 2.3:0,1 CL 14. 06/26/91 2.1:0,2 CL Compostte CL 14 07/31/91 0.3 0.2 2.1:0.2 CL 14 08/28/91 2.1 0.2 CL 14 09/25/91 2.410.2 CL 14 Composite CL 14 10/30/91 0.4:0.2 2.6:0.2 CL 14- 11/26/91 2.510.1 i CL 14 12/25/91 2.6 0.2 CL 14 t,omposite l

l a Tritium analysis is performed once a quarter on a composite of rnonthly samples.

Only gxina emitters detected are reported; typical LLD values are found in Table 0-20. j b Only gross alpha, gross beta, and tritfun detected are reported; typical LLD values are fourd in l Table D-20. !

168

i. l

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

TABLE 0 11 u!LK.!;131;-$r-90 AWD CAuMA* ISOTDPic ACTIVITY (PC(/L12al Date .

Location Cot t ect ed $r-90a 3 33ga g;gg CL 116 01/30/91 1.810.4 1330:50 CL 116 -02/27/91 1.510.4 1200:40 CL 116 03/27/91 1.1+0.3 1220;60 CL 116 04/24/91 2.610.4 1120150 ,

CL 116 '05/08/91 3.010.4 1160140 CL-116 05/22/91 2.910.6 (A70?50 CL 116 06/05/91 2.610.5 1150:60 l -CL 116 06/19/91 3.6:0.6 re40 80

l. ?

CL 116 07/03/91 2.910.6 1190:50 CL 116 07/17/91 3.210.5 1440150 CL 116 07/31/91 2.510.5 1260:50 LCL-116 08/14/91 2.510,6 1250 50 CL 116 08/29/91 4.8:0.8 1180150 j CL 116 09/11/91 1.7+0.4 li".0 150 CI 116 -09/25/91 4.010 6 1390 30 CL-116 10/09/91 1.310.4 1260170 CL 116- .10/23/91 1 '150 1250150 CL 116 11/26/91 1.110.4 1200160 CL 116 12/25/91 1.010.4 1200:50 4

Only gamma emitters detecteo are reported; typical LLD values are f ound in Table 0-20.

a only Sr 90 and 1 131 detected are reported; typical LLD values are found in Table D-20.

169

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

TABLE D 12 GRASS CAMWA* ISOTOPIC ACIIVlff (pCl/g wet:24 Date LocetIma Collected Be-? K-40 Cs 137 CL 1 02/27/91 6.50+0.19 4.81+0.31 ,

CL 2 02/27/91 9.09:0,22 4.64:0,30 Ct 6 02/27/91 5.70 0.19 4.52:0.29 CL 11 02/27/91 7.3910.16 2.7210.16 CL-116 02/27/91 7.25:0.19 3.47:0.25 CL 1 03/27/91 8.09:0.11_ 5.46:0,14 CL 2 03/27/91 7.4410.19 2.88 0.19 CL 8 03/27/91 3.32:0.11 5.69 0.25 CL 11 03/27/91 3.65+0.13 $ 02:0.20 CL 116 03/27/91 4.27:0,12 2.86:0.16 CL 1 04/24/91 1.07:0.06 6.00:0.20 CL 2 04/24/91 3.81,0.16 1 9.52 0,29 CL-8 04/24/91 0.86+0.07 6.93 0,23 CL 11 04/24/91 1.26:0.08 7.25:0.20 CL 116 04/24/91 1.1910.06 6.17:0.25 CL 1 05/08/91 0.73:0,07 4.78 0,27 CL 2 05/08/91 1.02+0.09 6.22:0,22 CL 8 05/08/91 . 27:0,04 4.51:0.21 CL 11 05/08/91_ 0.40 0.07 6.06:0,19 CL 116 05/08/91 0.451,0.07 4.2010.18 CL-1 05/22/91 2.74+0.11 .4.84:0,25 CL 2 05/22/91 0.82:0,06 4.50 0,23 CL 8 05/22/91 1.41:0,09 4.47,0.18 CL 11 05/22/51 1.66 0.10 4.14+0.18 CL-116 05/22/91- 0.53:0,03 4.42+0.11 CL 1 06/05/91 0.87 0.08 5.14:3.21 CL-2 06/05/91 0.57 0.07 5.98,0.23 1

CL1 8 06/05/91 0.87 0.06 5.15:0.23 CL 11 06/05/91 1.46 0.08 7.88:0.22 CL.116 06/05/91 0.77:0.04 4.41 0,13 CL-1 06/19/91 0.93:0.08 6.720.31 CL 2 0'/19/91 0.88 0,12 6.93:0,29 CL-8 06/19/91 1.00:0,07 6.43:0,28 CL 11 06f 19/91 0.5410,0) 4.61 0.20 CL 116 Q4/19/91 0.99:0,11 5.74:0.27

-* Only garrma emitters detected are reported; typical LLD values are found in Table D-20.

a CL 11 and CL 116 are control lccations.

170

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

t TABLE D 12 (cont'd)

CRASS CA WA* IS0?OPlc ACilVltY ,

(ptl/s wet:2a)

Date Locat1908 Collected Oc.7 0 40 to 137 CL-1 07/03/91 1.30:0.15 6.78:0.28 CL 2 07/03/91 0.92 0.07 5.56:0.20 CL 8 07/03/91 0.8910.12 6.40:0.27 CL 11 07/03/91 0.78:0.13 4.1610.27 CL-116 07/03/91 1.44:0,12 5.56:0.26 CL 1' 07/17/91 0.28:0.06 5.45:0.30 t

CL 2 07/17/91 2.33:0,14 5.07:0.26 CL-8 07/17/91 0.78:0.11 6.33:0.27 ,

CL 11 07/17/91 0.4210.07 4.64:0.28 {

CL 116 -07/17/91 2.85 0,11 4.25:0.22 CL 1 07/31/91 0.78 0.09 4.95:0,21 CL-2 07/31/91 0.9510.09 7.14 0.23 5 CL 8 -07/31/91 0.38 0.03 5.891 21 0

CL 11 07/31/91 0.28:0.03 4.03:0.12 CL 116 07/31/91 0.5510.04 5.87:0,15 CL 1 05/14/91 0.82:0.07 4.38 0.24 CL 2 08/14/91 1.24:0.07 6.01:0.22 CL 8 08/14/91 0.69:0.07 6.98:0.20 l CL-11 08/14/91 0.49:0.06 3.56:0.22 CL 116 Cef %/91 - C.940,07 4.52 0.23 CL-1 08/2S/91 0.58:0.07 4.52 0.16 CL 2 08/28/91 0.8010.06 6.2010.23 CL 6 08/28/91 0.65 0.07 8.28 0.35 CL 11 08/28/91 0.12:0.06 5.3010.22 CL 116 08/28/91 0.6620.08 4.00:0.20 CL-1 09/11/91- 1.4210.07 4.50:0.17 CD2 09/11/91 1.45:0.08 3.38 0.18 CL-8 09/11/91 1.10 0.08 7.05:0.31 CL-11_ 09/11/91 1.82:0,11 7.81 0.25 CL-116 09/11/91 1.38:0.09 5.08:0.27

) CL 1 09/25/91 1,55:3.10 5.67:0.19 CL-2 09/25/91 1.91 0.07 6.52:0.16 Cl -8 09/25/91 1.15 0.09 6.46:0.32 CL 11 09/25/91 1.22:0.10 7.14:0.28 ;

CL 116 09/25/91 1.33 0.07 4.90:0.20

CrJy gama emitters detected are reported; typical LLO values are fourd in Table D-20.

a CL 11 and CL 116 are control locations.

171

. .- - . . .- . . .m...... m-~ 4_.- _ . . .. _ _ - _ . m_m m . _ _ _ _ _ . . _ . . _ . _ .

TABtf 0 12 (cont 8d)

$RASS CAMMA+ ISOf0 pit ACTIVITY (pCl/g het*2a)

' Date i locatleqa Cottected Be-7 r 40 Cs 137 CL 1 10/09/91 2.70:0.09 4.27:0,15 CL 2 10/09/91 2.54:0.09 6.23+0.21 CL 8 10/09/91 2.01:0,10 7.01:0.30 CL 11 10/09/91 1.82:0.10 5.20:0.24 CL 116 10/09/91 2,75 0,13 5.96:0,31 CL 1 10/23/91 3.11 0.13 5.59:0.22 CL-2 10/23/91_ l 8:0,11 6.70:0.20 CL 8 10/23/91 1.4v:0.08 6.55:0.29 >

CL 11 10/23/91 1.08:0.07 6.70:0.29 CL 116 10/23/91 3.00:0.09 6.18 0.19 CL 1 11/26/91 9.81:0.26 2.4310.23 CL 2 11/26/91 9.21*0.25 2.69+0.38 0,029 0.010 CL-8 11/26/91 6.43:0.19 3.04:0.23 CL-11 11/26/91 9.52+0.24 3 . 75 : 0,2 8 CL 116 11/26/91 9.14:0.26 3.5310.28 0.023:0.010 CL-1 12/25/91 6.36 0.19 0.B4:0.15 CL 2 12/25/91 6.56 0,18 1.29:0.14 CL 8 12/25/91 5.12:0.16 0.96 0.13 CL 11 12/25/91 5.58 0.14 1.4610 12 CL 116 12/25/91 7.28:0.20 1.15:0.16

Only Camna emitters detected are reported; typical LLO values are f ound in Table 0 20.

a CL-11 and CL-116 are control locations.

172

. .~_s-. ._ ._ - .__y_..___.m._ . _ . - . m._.__.____ _.._m. .- _

TASLEDill C#EEN LEAFY VECETABLE CROSS BETA AND !

CAMMA* 150f0Plc ACTIVITY (pcl/g wet:24 l

i Cate Cross 12cetton' Collected Beta Be 7 K-40 Cs-137 CL-114 Lettuce 06/26/91 3.6 0.1 0.082 0.021 2.60:0.13 CL 114 Cabbage 06/26/91 3.010.1 0.084:0.053- 3.16:0.14 CL 114 Swiss Chard 06/26/91 5.710.2 5.60:0.22 CL-115 Lettuce 06/26/91 4.7:0,2 0.24:0.05 4.46 0.15 i CL 115 Cabbage 06/2$/91 2.9 0,1 0.080:0.041 2.4810.19

.CL 117 Lettuce 06/X.@ 4.0:0,1 0.1510.01 3.4510.76 0.007:0.002 l CL 117 Cabbage 06/20/91 3.0:0,1 2.63:0.10 l CL 117 Swiss Chard 06/26/91 4.210.2 3.79:0.17 CL 114 Lettuce 07/31/91 5.3:0.2 5.4110.17 CL 114 Cabbage 07/31/91 2.510.1 1.91 0,10 CL 114 Swiss Chard 07/31/91 3.5:0,1 4.32:0.16 CL 115 Lettuce 07/31/91 4.5:0.2 4.37:0,22 CL-115 Cabbage 07/31/91 2.9:0.1 2.16:0.12 CL 117 Cabbage 07/31/91 2.110.1 CL*117 Swls Chard 07/31/91 7.1:0,2 4.62:0.14 CL 114 Cabbage 08/28/91 2,5110.08 2.31:0.14 CL 114 swiss chard 08/25/91 3.67 0,08 3.42:0.12 CL+115 Cabbage 08/28/91 2.5010.08 1.92:0.11 CL-117 Swiss Chard 08/28/91 2.52 0.09 0.12:0,06 2.4610.13 CL 114 Cabbage 09/25/91 2.3010.05 2.15:0.10 CL 114 Swiss Chard 09/25/91 3.42 0.08 0.12:0.04 3.23:0.10 CL-117 Swiss Chard 09/25/91 3.31:0.08 0.13:0.03 2.83 0.16

Only ganvr.a emitters detected are reporte d typical LLD values are fourd in Table D 20.

a CL 114 is a control location.-

l 173

-TABLE D-14 MEAT GAMMA

ISOTOPIC ACTIVITY (pCi/g weti2a)

Date Location Collected K CL-106 Bovine Thyroid 01/17/91 1.6710.11 CL-106 Hamburger 01/17/91 2.0210.13 CL-106 Bovine Liver 01/17/91 2.4910.13

Only gamma emitters detected are reported; typical LLD-values are found in Table D-20.

)

o !

l i

j i

174

. . - _ . _ _ _ - - _ . . _ . _ _ _ _ . _ . . _ _ . _ m , .

_ ._. _ s TABLE D-15' FISH GAMMA

ISOTOPIC ACTIVITY (pCi/g weti2,)

Date Location a. Collected K-40 CL-19 Blue Gill 04/15/91 2.2410.13 CL-19 Crappie 04/15/91 2.8910.17 CL-19 Carp 04/15/91 3.0210.14 CL-19 Largemouth Bass 04/15/91 3.0110.15 i CL-105 Blue Gill 04/16/91 2.5810.12 CL-105 Crappie 04/16/91 2.3410.14 CL-105 Carp 04/16/91 2.2210.18 CL-105 Largemouth Bass 04/16/91 2.9810.14 CL-19 Blue Gill 10/21/91 2.4610.16 CL-19 Crappie 10/21/91 2.7210.13 CL-19 Carp 10/21/91 2.6310.19 CL-19 Largemouth Bass 10/21/91 2.9610.16 CL-105 Blue Gill 10/22/91 2.4610.15 CL-105 Crappie 10/22/91 2.9610.11 CL-105 Carp 10/22/91 2.4410.12 CL-105 Largemouth Bass 10/22/91 2.7620.13

Only gamma emitters detected are reported; typical LLD values are found in Table D-;0.

a CL-105 is a_ control location.

l l

175

. , . __.m . _ , . _ _ _ -__ .. -. - _ . _ _ . _ _ _ _ _ - . _ _ . . , _ _ _ _ _ _ _ . _ _

. LABtt 0 16 A30ATIC VECETATION CAMMA* ISOTOPIC ACTIVITY (pcl/g wet 2a)

Date tocatione (gitt a d Be-7 r-40 Cs 137 CL 78 .04/15/91 - 0.45 (l.072 1.89+0.21 CL 7C 04/15/91 0.8110.047 2.08:0.12 0.036:0.005 CL-9 04/15/91 0.76 0.045 1.95:0,13 0.03610 005 CL 10 04/15/91 1.6210.20 2.87+0.42 0.079 0.018 1 Ct 19 04/15/91 0.5810.089 3.05:0,15 l

CL 105 04/16/91 0.8210.12 3.12 0.29 0.07810.014 CL 78 06/13/91 0.5210.15 1.92 0.44 0.045:0,016 CL-7C 06/13/91 0.32 0.05 1.42:0.17 0.034 0.006 CL-9 06/13/91 0.31+0.05 1.6210.18 0.027:0.007 CL-10 06/13/91 0.45 0.09 1.30:0,18 0.035+0.009 CL 19 06/13/91 0.49 0,09 2.57:0,36 0.058+0.014 CL 78 08/13/91 0.5210.16 1.44 0,48 0.040+ 0.019 ,

~ CL*7C 08/13/91 0.4210.18 2.10:0.54 .0.032:0,020 CL-9 08/13/91 0.49:0.22 2.35 0.61 0.068:0,027 CL-10 08/13/91 2.26+0.33 CL 19 08/13/91 0.62:0,17 2.61 0.54 0.058 0,018 CL 78 10/21/91 1.49+0.55 0.037:0.020

.CL 7C 10/21/91 0.21: 0,17 0.98 0.22 0.022+0.009 CL-9 10/21/91 0.69:0,20 CL 10 10/21/91 1.16:0.22 CL 19 10/21/91 1.82:0.24 CL 105 10/22/91 1.5010,25 l

l 1

i i

Only gartma emitters detected are reported; typical LLD values ai e fourd in Table D-20. l l a CL-105 is a control location. '

i I

l l

l 176 l-l

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

TABLE D 2 SuDRELINE SEDIMENT CROSS ALPMA, CROSS BETA, Sr-90 AWD CAMMA+ ISOTOPlc ACTIVITT ,

(pcl/g dryt2a)

Dats Cross b Cross b Locationa Collected A t Dh a Beta Sr 90b g,,7 K 40 CL ?B 04/15/91 7.1 1.8 0.25:0.056 6.48:0.16 CL 7C- 04/i5/91 5.012 7 9-.212.0 6.6110.25 CL 10 04/15/91 7.4+0.8 8.09:0.18 CL-19 04/15/91 9.0 2.0 0.19:0.060 7.860,20 CL 88 04/15/91 7.5+1.9 4.98:0.15 CL 89 04/15/91" 2.9+1.5 10.111.3 0.15 0.055 9.46 0.24 CL 93 04/15/91 8.5:2.1 11.6:1.3 0.940,088 4.51+0.24 CL 105 04/16/91 9.012.0 0.16:0.070 10.12 0.30 Date L ocat ione Cotteeted Cs 137_ , Ac 228 Bi 214 Pb 212 Pb-214._

CL- 78 04/15/91 0.15 0.021 0.15+0.016 0.1910.010 0.1610.018 CL-7C 04/'5/91 0.1610.027 0.13 0,014 0.21+0.016 0.14+0.023 CL 04/15/91 0.016 0.005 0.3210 032 .0.25:0.017 0.32:0.014 0.28:0.017

CL 19 04/15/v1 0.19:0.038 0.16:0.017 0.20+0.010 0.16:0.017 CL-B8 04/15/91 0.15 0.023 0.1120.011 0.150.008 0.12 0.012 CL 89 04/15/91 0.032:0,008 0.36 0,044 0.23:0.020 0,36:0,014 0.24+0.021 CL 93 04/15/91 0.04810.011 0.3110.039 0.44:0,029 0.5010.023 0.47:0.034 -

CL 105 04/16/91 0.20:0,045 - 0.1610.024 0.16 0.019 0.1810.022 ,

Date tocation a Cettected Ra 226 TI-208 CL 78 04/15/91 0.4810.13 0.1610 022 CL 7C 04/15/01 0.54 0.14 0.15 0,020 CL-10 04/15/91 0.5910.17 0.33 0.027 CL-19 04/15/91 0.4410.52 0.2010.024 CL-88 04/15/91 0.29:0.096 0.1610.020 CL-89 04/15/91 0.6710.14 0.32 0.033 CL-93 04/15/91 2.18 0.21 0.28 0.028 CL-105 04/16/91 0.240.24 0.2010.034

Only. gama emitters detected are reported; typical Lt0 values are found in Table 0 20.

a CL-105 is a control location, b Only detected values are reported; typical LLO values are found in Table 0-20, 177

,-.,r - , .

-m e , . r-, ,. y --, ,

. .- . - _ . _ . .. _ .. . ...m. ..____.-._.s -_m.. .__._..____._.m_m._-_._____.

TABLE D 17 (cont'd)

Swoeflid SEDIMENT CROSS AgA 0ROSS 2 SETA,_

Sr-90 AND CAMMa* 1$0f0PIC ACTIVI E (pC1/g drys 2e)

Date Crossb Grou b s Aires Lesotion Collected Bet t Sr 90b g,.7 g.49 CL 78 '

10/21/91 5.912.1 5.4610.24 CL 7C 10/21/91 LO:1.6 8.59 0.1d CL 10 . 10/21/91 7.411.5 6.99 0.26 CL 19. 10/21/91 11.9 2.9- 0.007:0.004 6.76+0.33 CL-88' 10/21/91 9.911.9 6.61 0.15 CL 89 ~ 10/21/91 8.014.2 16.3:2.5 0.15 0.07 9.65 0.18 ,

CL 93 10/21/91 6.714.4 14.113.0 0.0431 0.011 0.3810.16 5.21:0.27 CL 105 10/22/91 5.1:3.9 9.212.5- 5.92 0.38 Date Locationa Collected Cs 137 Ae ?23 gh,214 _Pb-712 Pb-214 CL 78 10/21/91 0.1920.02 0.11:0,02 CL-7C 10/21/91 0.16 C.L 0.12:3.51 0.18 0,01 0.16:0.01 CL 10 10/21/91 0.2010.01 0.13f.0.02 CL 19 10/21/91 0.12 0.02 0.14:0.02 CL 88 10/21/91 1.14 0 fd 0.1t:0.01 0.16:0.01 0.13:0.01 CL-89 10/21/91 0.035:0,006 0.M1043 0.27:0.02 0.49:0,01 0.340,02 CL-93 10/21/91 0.034:0.017 0.2%D.05 0.21:0.04 0.25 0,04 0.30:0,04 CL 105 - 10/22/91 .1pf 01 0.096:0.033 0.11 0,03 0.14:0,02 Date Lpfcation a coliceted JeJg , J,p8 ,

I CL-78 10/21/01 0.11+0,04 CL 7C 10/21/91 0.4110.14 0 13:0,02 CL 10 10/21/91 0.4310.11 G.13:0,02 CL-19 10/2'/91 0.22:0.12 0.13:0,03

'CL-83 10/21/?1 0.34 0.11 0.14 0.02 CL 89 10/21/01 0.83 0.15 0.4110,03 ,

CL-93 10/21/91 0.55:0.46 0.18 0.06 C). 105 10/22/91. 0.2S:0.23 0.12:0,05 l

l l- e l

.

Only gama emitters detected are reported; typical LLD values are found in Table D 20. l e CL-105 is a control location.

b only detected values are reported; typical LLD values era found in Table D-20.

178

. - - ._ .. __ - - --. -- l

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

i TABLE D 15 BOT 10M SED! MINT CROSS ALPHA. GROSS BET A.

Sr-90 AND GAMMA

ISOTOPIC ACitVITY (pCl/g dry 24 Date Gross b grogg b locatione Collected A t t+ e _ Beta Sr-90b ge 7 g.40 CL 7C 04/15/91 14.5:2.4 27.4:1.8 0.022:0.005 14.80+0.52 CL 10 04/15/91 14.7:2.2 27.5:1.5 13.04+0.53 CL 13A 04/15/91 7.1*3.2 19.7:2.6 0.007:0,004 12.55+0.17 CL-17.- 04/15/91 8.6+3.3 18.92.5 0.012:0.006 0.20:0,047 13.00:0,46 CL 19 04/15/91 5.0 3.0 14.1:2.0 0,008:0.004 12.30:0.41 CL 89 04/15/91 12.5:2.'. 23.8+' O 010:0.005 14.80:0.51 Ut 105 04/16/91 1=.6:2.4 30.1+).. 0.013:0,006 0.34:0,17 13.1510.55 Date Locations Cotteeted CS 137 Ac ??S 84 212 BI-214 Pb 212 CL 7C 04/15/91 0.25:0.017 1.28:0,066 0.80:0.042 1.59:0.051 CL 10 04/15/91 0.38:0.027- 1.27:0.11 0.68 0.070 1.34:0.064 CL 13A 04/15/91 0.59:0.007 0.6010 031 0.41:0.019 0.71:0,015 CL 17 04/15/91' O.053:0.009 0.54+0.032- 0.41+0.023 0.78:0.025 CL 19_ 04/15/91 0.088:0.009 0.59:0.038 0.47:0,024 0.84+0.024 CL 89 04/15/91 0.20:0.017 1.12:0,058 0.7710.038 1.26 0.042 CL 103. 04/16/91 0.30:0,031 1.10:0.12 0.56+0.058

. 1.19:0.044 Date Locatien" . Collected Pb-214 _R a q26 Tt 208 CL 7C 04/15/91 1.29:0,099 2.70:0,30 1.03:0.065 CL 10 04/15/91 0.88:0.075 2.51:0.86 1.15:0.10 CL 13A 04/15/91 0.50 0,021 1.38:0.19 0.60:0.032 CL 17 04/15/91 0.44:0.031 1.08:0.12 0.58 0.032 CL 19 .04/15/91 0.49+0,030 1.1610.14 0.58:0.033 CL 89 04/15/91 1.11:0,086 2.1410.26 0.86:0.050 CL 105 04/16/91 0.62:0,063 2.02:0,50 0.97:0.073

Only gansna emitters detected are reported; typical LLD values are found in Table 0 20.

a CL 105 (s a centrol tocation.

I b Only detected values are reoorted; typical LLD values are found in Table 0-20.

179 I

TAglE D-18 (cont 8d)

$0Tf0N SEDiwENT CROSS ALPHA CROSS BETA.

Sr-90 AND GAMMA * !$0f0p!C Act!VITY (pcl/g dryt2a)

_ Date Cross b g7,,,b Loeptien a Cottected Al ohe Beta Sr-00b g,.7 _, K-40 CL 7C 10/21/91 9.213.4 27.0 2.6 0.0181 0.008 0.37:0.08 15.5010.42 CL-10 10/21/91 14.113.0 26.5+1.9 0.022:0.011 14.10 0.67 CL 13A 10/21/91 8.42.5 5.56 0.26-CL-17 10/21/91 16.4 3.1 13.30 0.43 CL 19 10/21/91 13.912.2 10.20 0,27 CL 89 10/21/91 8.114.6 22.713.4 0.5'10 16 17.7310.42 i

CL 105 10/22/91 8.615.2 23.0:3.7 0.025:0.008 8.2010.31 Date locatione Cottected Cs 137 Ac 2?S 81 212 B4 214 Pb 212 1

CL-7C 10/21/91 0.36 0.01 1.10 0.04 0.8710.03 1.72:0,04 CL 10 10/21/91 0.43:0.03 1.10 0.14 0.94+0.07 1.36+0.07 CL 13A 10/21/91 0.16 0.05 0.15:0.03 0.23:0.03 CL-17 10/21/91 0.0731 0.009 0.68 0.05 0.440,03 0.96 0.03 i CL-19 10/21/91 0.1710 003 0.24+0.02 0.20:0.01 0.38:0.01 CL-89 10/21/91 0.14 0,02 1.07:0.08 1.25 0,24 0.79:0.05 1.22:0.04 CL 105 10/22/91 0.22+0.02 0.5510.09 0.27 0.04 0.62+0.04 Date tocationa Cot t eet ed Pb-214 Ra-226 TI-208 CL 7C 10/21/91 0.96:0.05 2.4210.15 1.11:0.04 CL-10 10/21/91 1.06:0.07 2.83 0,58 1.21:0.11 CL-13A. 10/21/91 0.1710.04 0.61 0.24 0.1710.04 CL 17 10/21/91 0.48 0.03 1.33:0,16 0.61:0.04 CL-19 10/21/91- 0.22:0.01 0.51+0.07 0.23+0.02

-CL-89 10/21/91 1.00:0.05 2.58 0.39 1.1710 07 CL-105 10/22/91 0.32 0.05 0.94 0.46 0.43 0.06 L

l

Only gamma emitters detected are reported; typical LLO values are found in Table D 20.

a CL-105 is a control location.

b only detected values are reported; typical LLD values are f ound in Table D 20.

f 6

i 180

. . . . . . . . . _ , . _ _ _ _ . . . ___ .... _ m .__-.._.m__ _ _ . _ - - _ . _ . - _ . . - _ . - , . -

i TA9 d D 19 Soft CROSS ALPHA. CROSS BETA AND CA88M A* ISOTOPIC ACflVITY (pCl/g dryt2a)

Date Gross b gregg b Location

Cottectej Alrhe_ Beta K 40 CS-137 Ac=228 CL 1 10/17/91 11.714.1 26.4 2.7 17.8410.60 0.4710.04 1.2710.13 CL 2 10/17/91 13.215.6 23.7 3.8 15.1310 34 0.27+0.02 1.1810,07 CL 3 10/17/91 12.213.6 21.9:2.3 14.10:0.33 0.24:0.01 0.95 0.04 CL 4 10/18/91 10.11 3.7 19.812 5 16.1810.44 0.062+0.016 1.14 0.10-CL 6 10/18/91 10.615.1 23.813.6 16.0710.38 0.015+0.012 0.6710.06 CL-7 10/16/91 12.8:3.9 22.1; 5 17.04:0.42 0.14+0.02 0.91:0.08 CL 8 10/16/91 7.813.3 24.6 i.* 14.7510.35 0.35 0 R 1.05 0,08 CL 11 10/16 91 9,7:3.7 24.812.8 9.79 0.50 0.32:0.02 0,71+0.11 ,

CL-16 10/17/91 10.213.7 23.812.7 18.24:0.43 0.097:0,016 1.00:0,09 CL-94. 10/16/91 16.816.4 26.6:1.8 16.09:0.43 0.56:0,03 1.03:0,09 Date

' Locationa Collected _9 b 212 81 214 Pb 21{ Pb-216 Ra-226 CL-1 10/17/91 1.690.36 1.1310.07 1.6110.05 1.36+0.08 3.40:0.61 CL-2 10/17/91 1.3910 19 0.99:0.04 1.4120.03 1.17:0.04 2.8810.29 CL 3 10/17/91 0.84fe.13 1.4410.03 0.8810 04 2.3110.11 CL 4 10/18/91 0.9810.05 1.36 0,04 1.20 0,05 3.01:0.42 CL-6 10/18/91 0.51:0.04 0.80 0,03 0.65 0,03 1.4510.32 CL 7 10/16/91 1.29:0.20 0.75:0.20 1.03:0,04 0.91:0.04 2.18:0,34 CL 8 10/16/91 1.38 0.21 0.8310.04 1.26:0,03 0.9810.04 2.43+0.29 CL 11 10/16/91 0.53:0.05 0.9210.04 0.66:0.04 2.08 0.49 CL 16 10/17/91 0,81:0.05 1.15+0.03 0.98:0.04 2.520.32 CL-94 10/16/91 0.89:0.05 1.2010.04 1.06:0.06 2,62:0,42 Date

- Locations Cottected 71-208 CL-1 10/17/91 1.5310.11 f

. CL 2 10/17/91 1 kS10.07

- CL-3 10/17/91 0.9910.04

- CL 10/18/91 1.3010.08 CL-6 10/18/91 0.7310.06 CL 7 10/16/91 '1.08+0.06

'CL 8 10/16/91 1.1910.06 CL 11 10/16/91 0.86:0.08 CL-16 10/17/91- 1.1410.07 CL 94-~ 10/16/91 1.2010.08

'

Only ganna emitters detected are reported; typical LLD values are found in Table D 20.

a CL-11 is a control location, b Cnly detected values are reported; typical LLO values are found in Table D 20.

R 181

~ , , . , -.

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

a 1AEll. D.*22 ,

DETECTION REQUIREMENTS FOR ENVIROWENT AL SAMPLE ANALY$t $a,b L%'ER LIMli 0F DETECTION (tto)

Airborne Water Particulate Fish Milk Food Products Sediment Analysis (pCl/l) orGas(pCl/M) (pCi/kg, wet) (pCl/l) (pC(/kg, wet) (pCl/kg, dry) t Cross Beta 4 0.01 ~ --- -- ---

N.3 2,000 C _

-~ -- "-

C Mn 54 15 "-

130 -- ~~ ~

Fe-59 -30 -.-

260 - --- ~ t Co 58,60 15 ~

130 " -~ --

2n-65 30 --- 260 -- --- ---

i Zr-95 30 - -- - -- ---

kb-95 15 --- --- -- - --

.1 131 1d 0.07 -~

1 60 --

cs-134 15 0.05 130 15 60 150 l-cs-137 15 0.06 150 18 80 180 Ba 140 60 -- --- 60 -- ---

La-140 15 --- --

15 --- ---

Table Notatfons 1

a This List does not mean that only these nuclides are to be considered. Other peaks that are' identified, together with those of the above nuclides, shall also be analyzed and reported,

~

b- Required detection capabilities for TLDs used for envi twental measurementa shall be In

. accordance with the recormendations of Regulatery Guide 4.13, Revision 1, July 1977.

-c if no drinking water pathway exists, a value of 3,000 pCi/l ma>> be used, l

l l d If no drinking water pathway exists, a value of 15 pCf /l may be used.

l l

182

APPEP7IX E CPS Radiological Environmental Monitoring Quality Control Check Results 1991 183

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

TABLE (.1 U. S. EPA CROSSCHECK PROGRAM a concentration in pci/lb TIML Result EPA Resultd Lab Sample Cate ----

Code Type Collected Analysis 22 s.d.c 31 s.d., Wat Control Limits i STW 618 Water Jan 1991 Sr-89 4.3tt.2 5.0 5.0 0.0-13.7 Sr-90 4.721.2 5.025.0 0.0 13.7

]

STV-619 Water Jan 1991 Pu 239 3.610.2 3.3:0.3 2.8 3.8 STW 620 Water Jan 1991 Cr.atpha 6.723.0 5.025.0 0.0 13.7 Gr. beta 6.311.2 5.0 5.0 U.0 13.7 STW 621 Water Feb 1991 Co-60 41.318.4 40.025.0 . 31.3-48.7 2n 65 166.7:19.7 149.0115.0 123.0 175.0 Ru-106 209.7 18.6 156.0219.0 153.0 219.0 Cs-134- 9.022.0 8.0 5.0 0.0 16.7 Cs 137 9.7 1.2 8.025.0 0.0-16.7 Ba 133 85.729.2 75,028.0 61.1 83.9 STV 622 Water Feb 1991 1 131 81.326.1 75.028.0 61.1 83.9 STW-623 Water Feb 1991 H-3 4310.0:144.2 4418.02442.0 3651.2 5184.8 STW 624 Vater Mar 1991 Ra 226 31.423.2 31.824.8 23.5-40.1 Ra 228 WD' 21.115.3 11.9 30.3 STW 625 Water Mat 1991 U 6.7t0.4 7.623.0 2.4-12.8 i

STAF 626 Filter Mar 1991 Cr.atpha 38.711.2f 25.026.0 14.6 35.4 f- --

Cr. beta 130.024.0 124.026.0 113.6 134.4 Sr 90 35.711.2 40.025.0 31.3 48.7 Cs 137 33.724.2 40.025.0 31.3 48.7 STW 627 Water Apr 1991

. 628 Sample A Cr. a t pha $1.026.0 54.0.14.0 29.7 78.3

! Ra 226 7.020.8 8.021.2 5.9101 Ra 228 9.7:1.9 15.223.8 8.6 21.8.

U 27.722.4 29.823.0 24.6 35.0 Sample B Gr. beta 93.316.4 115.0217.0 85.5 144.5 Sr 89 21.0 3.5 28.025.0 19.3-36.7 Sr 90 23.020.0 26.0:5.0 17.3 34.7 Cs-134 27.321.2 24.025.0 15.3432.7 Cs-137 29.022.0 25.025.0 16.3 33.7 184

l!bl L*.l.lLE1.' dj l

(cn entration in pal /lb 11% tesult (PA tesultd leb $ avt e Date Code t yte Cottected batysis s2 s.d.C 11 s.d., hel C te r et limits stN 62? milk Apr 1991 $r 89 24.0:8.7 32.0:5.0 23.3 40.7 tr 90 28.0:2.0 32.0 5.0 23.3 40.7 l 131 65.3:14.7 60.036.0 49.0 70.4 Cs 137 54.7s11.0 49.0:5.0 40.3 57.7 K 1591.7:180.1 1650.0 83.0 1506.0 17,4.0

$fW 630 Water May 1 # tr B9 40.7:2.3 J9.0:5.0 30.3 47.7 tr 90 23.7:1.2 24.0:5.0 15.3 32.7

$1W 631 Water May 1991 Cr.atphe Gr teta 27.7:5.8 46.0 0.0 24.0:6.0 46.0 5.0 13.6 34.4 37.3 54.7 g

51W 632 Water . tun iW1 Co 60 11.3:1.2 10.0:5.0 1.5 18.7 Zn-65 119.3:16.3 108.0:1. 0 M . 9 12 7.1 R r 106 162.3:19.0 149.0115.0 123.0 175.0 ts 134 15.3:1.2 15.015.0 6.3 23.7 Cs 137 16.3:1.2 14.0:5.0 5.3 22.7 S& 133 74.0 6.99 62.016.0 51.6 72.4 STW 633 Water JuniW1 It 3 13470.0:3E5.8 12480.0:124R.0 10314.8 14645.2

$TV 634 Jul 1991 Re 226 14.9:0.4 15.9:2.4 11.7 20.1 Ra 228 17.6:1.8 16.7:4.2 9.4 24.0 51W 635 Water Jul 1971 U 12.820.1 14.2:3.0 9.0 19.4 SfW 636 Water Aug 1791 1-131 19.3:1,2 20.0:6.0 9.6 30.4 s1W 637 Wate- Aug 1W1 Pu 239 21.4:0.5 19.4:1.9 16.1 22.7 tiAF-633 Filter Aug 1991 Cr.stp a 33.0:2.0 25.0 6.0 14.6+35.4 Cr.teta 88.7 'i.2 92.0:10.0 80.4 103.6 tr 90 27.0:4.0 30.0:5.0 21.3 38.7 Cs 137 26,3:1.2 30.0.+5.0 21.3 38.7 STW 639 Water sep 1991 $r 89 47.0t10.4 49.045.0 40.3 57.7 Sr 90 24.0:2.0 25.0:5.0 16.3 33.7

$1V 640 Vater sep 1W1 Cr.alpa 12.0:4.0 10.0 5.0 1.3 16.7 Cr.teta 20.5:1.2 20.0:5.0 11.3 25,7 185

T atf' f t i (I nrit ' d)

Conc entration in r< t/lb 11ML Result [FA Resultd L s.h Swole Date Cade frpe Collected Armlysis 12 s.d.C si s.d., Wai Control limits stM 641 Milk eep 1991 sr 89 20.3:5.0 25.0:5.0 16.3 33.7 ti 90 19.7s3.1 25.0:5.0 16.3 33.7 1 131 130.7416.8 h 108.0:11.0 L8.9-127.1 Co 137 33.7:3.2 30.0:5.0 21.3 38.7 K 1743.3:340.8 1740.0s87.0 1569.1 1890.9 SfW 642 Vater Oct 1791 Co 60 29.7:1.2 29.0:5.0 20.3 3f.7 Zn 65 75 .7 8.3 73.0:7.0 60.9 85.1 tu 106 196.3:15.1 199.0 20.0 164.3 233.7 Cs 134 9.7:1.2 10.0 5.0 1.3 18.7 Cs 137 11.0:2.0 10.0:5.0 1.3 18.7 Be 133 94.7:3.1 98.0:10.0 80.7 115.3 STW f43 Water Det 1991 H3 2640.0:156.2 2454.0:35s.0 1843.3 3064.7

$1W 644 Water Oct 1991 645 Sample A Cr. n iha T3.0:13.1 82.C 21.0 45.6 118.4 Re ii6 20.9s2.0 ??.0:3.3 16.3 27.7 Ra 228 19.6 2.3 22.2:5.6 12.5 31.9 U 13.5:0.6 13.5:3.0 8.3 18.7 Samt>te B Cr .t4 t o $5.1s3 1 65.0:10.0 47.7 82.3

$r 89 9.7 3.1 10.0:5.0 1.3 18.7 tr 90 8.7:1.2 10.0:5.0 1.3 18.7 Co 60 i .3:1.2 20.0 5.0 11.3 28.7 Cs 134 9.0:5.3 10.0:5.J 1.3 18.7 Cs 137 14.7:5.0 11.0:5.0 2.3 19.7

$1W t46 Water hav 1791 Ra 226 5.6:1.2 6.5:1.0 4.8 8.2 Ra 228 9.6:0.5 8.12.0 4.6 11.6 STW-647 Water hov 1991 U 24.7s2.3 24.9:3.0 19.7 30.1 a Results cbtained by Tetedrne isoter+e Midwest Laboratory as a participant in the t nvironnental septe crosscheck program operated by the tr'tercocparison ard Calibration Section, Quality Assurance Branch, invirorrental Manitoring and Support Laboratory, U.S.

Invirorrental Protectici A2ency (IF A), las Vegas, hevada, b At t results are in the t<f /l, except f or elemental ;ctassium (K) data in milk, which are in as/L; air filter sanoles, which are in t<l/ fitter; and food, which is in mg/kg.

c Unless otherwist indicated. the TIML results are given as the nean #2 standard deviations for three determinations, d LiFCA results are presented as the incun values and espested leboratory precision (1 s.d.,

1 determination) and contrcl limits as defined by [PA.

186

!!!) L L1 itn' t ' di Correntr at ion in (Cl/lb ilut fesult 16A tesultd Lab lanet e Date Ccede ine C ollec t ed Analysis s2 s.d.( si s.d., bei Control lin+its e ho dets; sanote lost daririg analyses, f Cause of high results is the dif ference in gecretty Letween startiard used in the 11ML lab ard the (l' A f i l t e r .

g tarple was teenalyred. R esul t s of reena'.,ses 63.!!t 6.9 pC i/L . ho f ur ther ac t ion t ak en, b Cause of high result i s unk nown. In house strik e trote was prepared with activity of 1 131 63.3s s.8 g< t/L . Result of the analysis was 69.1t9.7 pCi/L.

187

1 Bit E 2 LW3E f 5 P O Q, lAMll.L1 C ?oc cat e s1J on in t{ l/ l ,

Lab $ ample Date 11ML Result Known farected Code type lected Analysis n=3 Activity Precision 1 S,d. r*3 QC ul 33 Milk son 1791 tr 8? 20.7:3.3 21.6:5.0 5.0

$r 90 19.0:1.4 23.0:3.0 3.0 Cs 134 22.2:1.7 19.6:5.0 5.0 Cs 137 26.1:1.6 22.3:5.0 $.0 CC MI 34 Milk feb 1991 1 131 4?.7:1.8 40.1:6.0 6.0 c; N 75 W' uter Mar 1991 sr t9 18.8:1.5 23.3:5.0 5.0 sr 90 16.0:0.8 17.2:3.0 3.0 cc W 76 Water Apr 1991 l'i31 56.5:1.7 59.0:5.9 5.9 CC W 77 Water Apr 1991 Co 60 16.4:2.? 15.7:5,0 5.0 Cs 134 23.B 2.5 22.6:5.0 5.0 Cs 137 25.0 2.4 21.115.0 5.0 QC-W 78 Water Apr 1791 H3 4027:1B3 4080:408 408 00 M1 35 Milk Apr 1791 1 131 48.0:0.8 49.236.0 6.0 Cs 134 29.2:2.0 22.6:5.0 5.0 Cs 137 22.8:2.2 22.1:5.0 5.0 00 W 79 Water sun 1991 Ct . el st e 7.4:0.7 7.B 5.0 5.0 Cr.teta 11.0:0.7 11.0:5.0 5.0 00 MI 36 Milk Jul 1791 sr 89 28.12.1 34.0:10.0 10.0 Sr 90 11.620.7 11.5:3.0 3.0 1 131 14.4:1.9 18.3 5.0 5.0 Cs 137 34.3:3.0 35.1:5.0 5.0 CO-W 80 Water Oct 1791 Si 6Y 27.4:6.9 24.4:5.0 5.0 50 90 11.7:1.4 14.1:5.0 5.0 c W-81 Water 0<t 1991 1 131 19.1:0.7 20.6:4.2 4.2 c W 82 Water Oct 1991 Co 60 22.6:2.7 22.1:5.0 5.0 Cs 134 15.5:1.8 17.6:5.0 5.0 Cs 137 17.5:2.1 17. 6 t 5.0 5.0 C* V 83 Water Oct 1V91 H3 4639:137 4352:438 438 CC-MI 37 Milk Cet 1791 1-131 23.63.2 25.B 5.0 5.0 Cs 134 22.7:2.8 22.1 5.0 5.0 Cs 137 38.3:3.0 35.1 5.0 5.0 188

11EL 1 M 2P1 Il Lhd'31LP H ID t A*L!j C meert ret t on in gQf t .

Lab $wole Cote TIML te$ ult known t agec t ed Ccde T yle Collected Analys i s n=3 Activity F'r ec i s het 11 S . d u h=3 CC W % Water tec 1701 Gr. algas 6.2:0.6 7.B 5.0 5.0 Cr . te t a 11.0:0.7 11.0:5.0 5.0

, 189

l!Sif I'}

Jh njit(gu tsugg

.IfT".1.fl.lhD 10.lO / L Ac c ept anc e Lab $ arple Cate kesults Criteria L<e 1yt* (.p1LL*Jfd A9h< i s 14, M s .1d (4.M s ,d. )

5Ps 406 Milk Jan 1971 $r 29 <0.4 <5 tr 90 1.B 0.4a og Cs 134 <3.7 <5 Cs 137 <5.2 <5

$PS 421 Milk Feb 1??1 l*131 <0.3 <1 SFW 451 Water feb 1991 Re 226 *0.1 si Ra 229 <0.6 si Srw 5?4 Water Mar 1??) tr t? <1.1 <5

$r 93 <0.9 <1

$fW 555 Water Apr 1991 1 131 <0.2 <1 CL 134 <2.4 <5 Cs 137 42.2 <5 SPS 557 Milk Apr 1991 1 131 <0.2 *1 Cs 134 <1.7 <5 Cs 137 <1.9 <5 srW 037 Water Jun 1991 Cr.el tAs <0.6 <1 Cr. te t a <1.1 <4 SIM 953 Milk Jul 1791 $r t? <0.7 <5 3t 90 0.4 0.3a ,j 1 '.31 <0.2 <1 ts 137 <4.9 <5 ftM 1236 Milk Oct 1791 1 131 *0.2 <1 Cs 134 <3.7 <5 Cs 137 <4.6 <5 LEW 1254 Vater Oct 1991 Sr t? <2.8 <5 tr-90 <0.7 <1 SPW 1256 ' Water oct 1771 1 131 <0.4 <1 Co 60 <3.6 <5 Cs 134 <4.0 <5 Cs-137 <3.6 <5 SPW 1259 Water Oct 1971 H3 <160 <300 190

1Lhl t 3 nr.U.41 Dd2$LIL": *"'LLS

_E n t s fil?" in MJD Accepterte L t.b torple Cote Results Criterie E?di_. IM E.EllfLlt1_8.lfl19Ii l'_dt_1 1 ) Whf:._idh.2

$N 1444 Water Dec 1W1 Cr . e l gir a <0.4 <1 C*. tete <0.8 <4 8

t cw l e v e l ( 1 5 pt t / t ) o f ir - 90 c onc ent r a t i on i n nii l k i s no t unusua l .

191

(.

$dh, teets twrer :epzw_engul, 7NttaStUm1q$(thi DOS 1*f Tit _L1,1J2D e#

1 e l edy1',e Lab TLD Rtsult Known Ccdc T y;4 Me a sur enent s2 s.d.a y gypb T el edra Testing 91 1C teledyne Lab 33.4s2.0 32.0 Cato4 :Dy 55.2:4.7 $8.8 Cards 67.Es6.2 B5.5 a Lab result given is the rnean 12 standard deviations of three determinations, b Value determined by sponsor of the interccoporison using continuously operated pressurized ion chanter.

c Irradiated cards were provided by Teledrne lsetepes, Ikt., Westwood, NJ. radiated on oc tober 8,1991.

192

1 aptt f 5 KCIPTANCE C#til#1A_ F2R TPl QD lauf R 1 16 Bot A10cv PRQ1LONLqk{ $f aktat0 Of vt A11M val %i For vanttvis Awalvttg*

fre Starderd Deviation Amstysis levet fer tinale Determinntlen Canra Emitters 5 to 100 pCi/ titer or kg 5 pCi/ Liter

>100 pCI/ liter or kg $% of krewn volve StrontiumEE 5 to 50 pCl/ liter or kg 5 pCl/ liter

>50 pCl/ liter or kg 10% of known value Stronti m 9Cb 2 to 30 pCl/ liter or kg 3.0 pCl/ liter

>30 K l/ liter of kg 10% of known value Potassim >0.1 g/ liter or kg 5% of known value Cross Alrea <20 pCI/ titer 5 pcl/ titer

>20 pcl/ liter 25% of known value Cross Seta <100 pcl/ liter 5 pCi/ titer 3100 FCi/ liter 5% of known value Tritium <4,000 pCl/ liter 1 s.d. = (pC1/ liter)

169.85 x (k nown)'C'33

>4,000 FCl/ liter 10% of known volte R adi un- 226 <0.1 FCi/ liter 15% of known value R adl un-228 Plutonim 0.1 rCi/ titer, gram 10% of known value or samte lodine 131, <55 rCl/ liter 6 pCl/ titer Iodine 129 b >55 FCl/ liter iC% of known vitue Uranho 238, <35 pCi/ Liter 6 pci/ Liter Wicket 63b , >35 pCi/ Liter 15% of known vatte iechnetim-9@

tron 55b 50 to 100 pCi/ titer 10 pcl/ liter 10% of known vetue 8 Frca EPA publication, "tnvirornental Radioactivity Laboratory Intereccparison Studies Program", fiscal Year 1981-1982, EPA-600/4-B1-004.

b TIML timit.

193

FOR MORE INFORMATION, CALL OR WRITE The Radiation Protection Department Clinton Power Station LLINOES C i ton 11 nois 61727 (217) 935-8881

_ _ _ _ _ _ _ - _ - _ _ _ . - - - -

U-601948, 1991 Annual Radiological Environ Monitoring Rept

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