Text

2003 Annual Radiological Environmental Operating Report
	ML041270108
Person / Time
Site:	Clinton
Issue date:	04/27/2004
From:	Mcdowell M; AmerGen Energy Co, Exelon Generation Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	U-603660
	Download: ML041270108 (127)
	v • d • e

Amergen.

An Exelon Company Clinton Power Station R. R. 3, Box 228 Clinton, IL 61727 U-603660 April 27, 2004 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Clinton Power Station Facility Operating License No. NPF-62 NRC Docket No. 50-461

Subject:

Annual Radiological Environmental Operating Report AmerGen Energy Company, LLC (AmerGen) is submitting the 2003 Annual Radiological Environmental Operating Report for Clinton Power Station. This submittal is provided in accordance with the requirements of section 5.6.2 of the Clinton Power Station Technical Specifications. This report covers the period from January 1, 2003 through December 31, 2003.

Respectfully, M.D.McDowell Plant Manager Clinton Power Station EET/blf Attachment cc: Regional Administrator - NRC Region IlIl NRC Senior Resident Inspector - Clinton Power Station Office of Nuclear Facility Safety - Illinois Emergency Management Agency

Clinton Power Station 2003 Annual Radiological Environmental Operating Report

Exelmon Nuclear 01 January 2003 - 31 December 2003 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT CLINTON POWER STATION - DOCKET NUMBER 50-461 Prepared by:

Clinton Power Station

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TABLE OF CONTENTS ITEM PAGE LIST OF TABLES 4 LIST OF FIGURES 5 I. EXECUTIVE

SUMMARY

6 II. INTRODUCTION 7 A. Characteristics of Radiation 7 B. Sources of Radiation Exposure 8 C. Description of the Clinton Power Station 12 D. Nuclear Reactor Operations 13 E. Containment of Radioactivity 16 F. Sources of Radioactive Effluents 17 G. Radioactive Waste Processing 17 III. RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 19 A. Program Description 19 B. Direct Radiation Monitoring 31 C. Atmospheric Monitoring 33 D. Aquatic Monitoring 37

Fish 37

Shoreline Sediments 38 E. Terrestrial Monitoring 38

Milk 38

Grass 39

Vegetables 39 F. Water Monitoring 39

Drinking Water 40

Surface Water 40

Well Water 41 G. Quality Assurance Program 43 H. Changes to the REMP During 2003 43 IV. 2003 ANNUAL LAND USE CENSUS 44 Summary of Changes 47 V. LIST OF REFERENCES 49

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TABLE OF CONTENTS (continued)

ITEM PAGE VI. APPENDICES A. 2003 Interlabatory Comparison Program Results 51 B. REMP Annual Summary 69

1. Sampling and Analysis Frequency Summary 70

2. Radiological Environmental Monitoring Program Annual Summary 73 C. Glossary 81 D. Exceptions to the REMP during 2003 84 E. CPS Radiological Environmental Monitoring Results during 2003 88

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LIST OF TABLES TABLE SUBJECT PAGE 1 Common Sources of Radiation 11 2-A CPS Radiological Environmental Monitoring Program Sampling Locations 27 2-B CPS Radiological Monitoring Program Sampling Locations 28 3-A CPS REMP Reporting Levels for Radioactivity Concentrations in Environmental Samples 29 3-B Detection Capabilities for Environmental Sample Analysis Lower Limit of Detection [LLD] 29 4 Average Quarterly TLD Results 32 5 Annual Average Gross Beta Concentrations in Air Particulates 35 6 Average Monthly Gross Beta Concentrations in Air Particulates 35 7 Average Gross Beta Concentrations in Drinking, Surface and Well Water 42 8 Annual Land Use Census Summary Results 46

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LIST OF FIGURES FIGURE SUBJECT PAGE 1 Dose Contributions to the U. S. Population from Principal Sources of Radiation Exposure 11 2 Clinton Power Station Basic Plant Schematic 15 3 Potential Exposure Pathways of Man Due to Releases of Radioactive Material to the Environment 21 4 REMP Sample Locations within 1 Mile 23 5 REMP Sample Locations from 1 - 2 Miles 24 6 REMP Sample Locations from 2 - 5 Miles 25 7 REMP Sample Locations Greater than 5 Miles 26 8 Direct Radiation Comparison 32 9 Air Particulate Gross Beta Activity Comparison 36

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EXECUTIVE

SUMMARY

I. EXECUTIVE

SUMMARY

This report describes the Annual Radiological Environmental Monitoring Program [REMP] conducted around the Clinton Power Station [CPS] during the 2003 calendar year. The REMP was performed as required by the CPS Operating License issued by the United States Nuclear Regulatory Commission [NRC]. The objective of the REMP is to assess the radiological impact upon the surrounding environment due to the operation of the Clinton Power Station.

During 2003, 1,443 environmental samples were collected and 1,686 analyses were performed on these samples. Environmental samples included measurements of air, land and water. Water samples included Clinton Lake surface water and public drinking water.

Analytical results from these environmental samples revealed the presence of natural radioactivity and radioactivity attributed to historical man-made events not associated with Clinton Power Station operation. The radioactivity levels detected were similar to the Pre-Operational levels found prior to the operation of CPS. The CPS Pre-Operational REMP Report documented natural background radionuclides and man-made radioactivity in the environment surrounding CPS.

Radiological environmental measurements taken during 2003 demonstrated that both operational and engineered controls on the radioactive effluents released from the plant functioned as they were designed. Any radioactivity that was detected in the environment at Indicator Locations was appropriately compared with both the measurements at Control Locations and Pre-Operational results.

There were zero (0) radioactive liquid releases from CPS during 2003.

Releases of gaseous radioactive materials were accurately measured in plant effluents; There was no gaseous effluent releases that approached the limits specified in the CPS Offsite Dose Calculation Manual [ODCM]. The highest calculated offsite dose received by a member of the public due to the release of gaseous effluents from Clinton Power Station was less than 0.0036 mR [milli-Roentgen].

All comparisons among Operational Data and Pre-Operational Data showed that during 2003, the operation of Clinton Power Station had no measurable effects upon the surrounding environment.

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¶i I

4. ~. INTRO bUCTION

[1;

11. INTRODUCTION The Radiological Environmental Monitoring Program [REMP] at Clinton Power Station [CPS] is designed to monitor the environment surrounding the plant for any radioactive material that may be released by CPS as a result of plant operations. The primary concern is what impact - if any - radioactive materials released from CPS may have on the general public.

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 decay". Gamma rays and X-rays are examples of electromagnetic radiation and are similar in many ways to visible light, microwaves, and radio waves. Particulate radiation may be either electrically charged such as an alpha or beta particle, or has no charge, like a neutron.

The term 'half-life' refers to the time required for half of a given amount of a radionuclide to decay. Some radionuclides have a half-life as short as a fraction of a second, while others have a half-life as long as millions of years. Radionuclides may decay directly into stable elements or may undergo a series of decays until they ultimately reach a stable element.

Radionuclides are found in nature such as radioactive uranium, thorium, carbon, and potassium, and may also be produced artificially in accelerators and nuclear reactors such as radioactive iodine, cesium, and cobalt.

TYPICAL NATURALLY TYPICAL MAN-MADE OCCURRING RADIONUCLIDES RADIONUCLIDES Uranium Iodine Thorium Cesium Carbon Cobalt Potassium Strontium Lead Barium The activity of a radioactive source is the average number of nuclear disintegrations [decay] of the source per unit of time. The unit of activity is called the curie. For example, a one-curie radioactive source undergoes 2.2 trillion disintegrations per minute. When compared against nuclear power plant effluents and environmental radioactivity however, this is a very large unit of measure. Therefore, two sub-fractional units - the microcurie and the picocurie - are more commonly used terms.

1 curie (Ci) = 2,220,000,000,000 disintegrations I minute 1 millicurie (mCi) = 2,220,000,000 disintegrations / minute 1 microcurie (piCi) = 2,220,000 disintegrations I minute 1 nanocurie (nCi) = 2,220 disintegrations / minute 1 picocurie (pCi) = 2.22 disintegrations / minute

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The microcurie [pCi] is one millionth of a curie [Ci] and represents 2.2 million decays per minute. The picocurie [pCi] is one millionth of a microcurie and represents 2.2 decays per minute. Another way of comparing the pCi and the Ci is by using an analogy with distances. A picocurie would be the width of a pencil mark while a curie would be the equivalent of 100 trips around the earth.

Radioactivity is related to the half-life and the atomic mass of a radionuclide. For example, Uranium-235 (U2" 5) with a half-life of 704 million years requires over a half ton - 1,019 pounds - to equate to an activity of one curie. Whereas lodine-131 (11") with a half-life of 8.04 days requires 0.0000000176 pounds to equate to an activity of one curie.

Any mechanism that can supply the energy necessary to ionize an atom, break a chemical bond or alter the chemistry of a living cell are capable of producing biological damage. Electromagnetic and particulate radiation can produce cellular 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 form. When radioactive elements enter the body through inhalation or ingestion, their distribution may not be uniform.

TARGET TISSUE NUCLIDE Bone Strontium-90 (Sr90)

Kidney Uranium-235 (U")

Thyroid lodine-131 (113) -

Muscle and Liver Tissue Cesium-137 (Cs"")

Gastrointestinal Tract Cobalt-60 (Co60 )

For example, radio-iodine selectively concentrates in the thyroid gland, whereas radio-cesium collects in muscle and liver tissue and radio-strontium collect in mineralized bone. The quantity and the duration of time that the radionuclide remains in the body also influence the total dose to organs by a given radionuclide. When factoring radioactive decay and human metabolism factors, some radionuclides stay in the body for very short periods of time while others remain for years.

The amount of radiation dose that an individual receives is expressed in Rem. Since human exposure to radiation typically involves very small exposures, the millirem [mRem] is the unit most commonly used. One millirem is equal to one thousandth of a Rem.

B. SOURCES OF RADIATION EXPOSURE Many sources of radiation exposure exist. The most common and least controllable source is natural background radiation from cosmic rays and the earth which mankind has always lived with and always will. Every

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second of our lives, over seven thousand atoms undergo radioactive decay in the body of the average adult.

Radioactive elements have always been a part of our planet and everything that has come from the earth - including our own body - is therefore, naturally radioactive.

Natural Radionuclides in the Earth's Crust Potassium-40 (K40) Radium-226 (Ra 226)

Uranium-238 (U238) Radon-222 (Rn222)

Thorium-232 (Th232) Lead-204 (Pb204)

Examples of radioactive materials found in the Earth's crust today consists of radionuclides such as Potassium-40, Uranium-238, Thorium-232, Radium-226 and Radon-222. These radionuclides are introduced into the water, soil and air by such natural processes as volcanic activity, weathering, erosion and radioactive decay.

Some of the naturally occurring radionuclides - such as radon - are a significant source of radiation exposure to the general public.

Radioactive radon is a chemically inert gas produced naturally in the ground as a part of the uranium and thorium decay series. Radon continues to undergo radioactive decay, producing new naturally radioactive materials called 'radon daughter products'. These new products - which are solid particles not gases - can adhere to surfaces such as dust particles contained in the air.

Concentrations of radon in the air vary and are affected by concentrations of uranium and thorium in the soil as well as altitude, soil porosity, temperature, pressure, soil moisture, rainfall, snow cover, atmospheric conditions and the time of the season. Radon can move through cracks and openings into basements of buildings and become trapped in small air volumes 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.

Dust containing radon daughter particles can be inhaled and deposited on the surface of an individual's lung. Radon daughters emit a high-energy alpha radiation dose to the inner lung lining. Table 1 illustrates the average annual effective dose due to radon radiation exposure.

About 300 cosmic rays originating from outer space pass through each person every second.

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Cosmic-Ray-Activated Radionuclides Beryllium-7 (Be") Tritium (H3)

Beryllium-10 (Be"0) Sodium-22 (Na22)

Carbon-14 (C 14 ) Phosphorus-32 (P3 2)

The interaction of cosmic rays with atoms in the earth's atmosphere produces radionuclides such as Beryllium-7, Beryllium-10, Carbon-14, Tritium-3, and Sodium-22. Portions of these radionuclides become deposited on land or in water while the remainder stays suspended in the atmosphere.

Consequently, there are natural radioactive materials in the soil, water, air and building materials that contribute to radiation doses to the human body. Natural drinking water contains trace amounts of uranium and radium while milk contains measurable amounts of Potassium-40.

Sources of natural radiation and their average contributing radiation doses are also summarized in Table 1. Figure 1 graphically shows the percentage contribution from principal sources of radiation exposure to the general population of the United States. Radiation exposure levels from natural radiation fluctuate with time and can also vary widely from location to location. The average individual in the United States receives approximately 300 mRem per year, just from naturally occurring background radiation sources.

In some areas of the United States, the dose from natural radiation is significantly higher. Residents of Colorado - 5,000 feet above sea level

- will receive additional dose due to the increase of cosmic and terrestrial radiation levels. In fact, for every 1,000 feet in elevation above sea level, an individual will receive an additional one (1) mRem per year from cosmic radiation. In several areas of the world, high concentrations of mineral deposits result in natural background radiation levels of several thousand mRem per year.

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 come 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 dose to an individual from such irradiation averages approximately 53 mRem.

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TABLE 1 COMMON SOURCES OF RADIATION A. Average Annual Effective Dose Equivalent to the U.S. Population

1. Natural Sources mRem

a. Radon 200

b. Cosmic, Terrestrial, Internal 100

2. Man-Made Sources mRem

a. Medical X-ray Diagnosis 39 Nuclear Medicine 14

b. Consumer Products 10

c. Occupational 1

d. Miscellaneous Environmental <1

e. Nuclear Fuel Cycle <1 Approximate Total 364 PERCENTAGE OF CONTRIBUTION Consumer Products (3%)

Nuclear Medicine (4%)

Radon (55%)

DE X-ray Diagnosis (11%)

_ OTHER (1%)

Misc. Environmental Sources

' Nuclear Fuel Cyde

Occupational Cosmic, Terrestrial Internal (27%h)

FIGURE 1: DOSE CONTRIBUTIONS TO THE U.S. POPULATION FROM PRINCIPAL SOURCES OF RADIATION EXPOSURE

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Smaller doses from man-made sources come from consumer products - such as televisions, smoke detectors, and fertilizers - as well as fallout from prior nuclear weapons testing, the 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 a nuclear weapon. Fallout is dispersed throughout the environment but can be washed down to the Earth's surface by rain or snow.

Radionuclides Found in Fallout lodine-131 (I131) Strontium-90 (Sr90s Strontium-89 (Sr89 ) Cesium-137 (Cs")

There are approximately 200 radionuclides produced in the nuclear weapon detonation process with a number of these detected as fallout.

The radionuclides found in fallout that produce the majority of the fallout radiation exposures to man are lodine-131, Strontium-89, Strontium-90, and Cesium-137.

C. DESCRIPTION OF THE CLINTON POWER STATION The Clinton Power Station [CPS] is located in Harp Township, DeWitt County, Illinois. It is approximately six (6) miles east of Clinton, Illinois.

The station - including the V-shaped cooling lake - coupled with the surrounding AmerGen Energy Company, LLC owned land encloses approximately 13,730 acres. This includes the 4,895 acre, man-made cooling lake and about 452 acres of property not owned by AmerGen. The plant is situated on approximately 150 acres on the northern arm of the lake. The cooling water discharge flume - which discharges to the eastern 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 aforementioned 13,730 acre plot reside within Wilson, Rutledge, DeWitt, Creek, Nixon and Santa Anna Township[s].

The cooling lake was formed by constructing an earthen dam near the confluence of Salt Creek and at the North Fork of Salt Creek. The resulting lake has an average depth of 15.6 feet which includes an ultimate heat sink of approximately 590 acre-feet. The ultimate heat sink provides for a sufficient water volume and cooling capacity for approximately 30 days of operation without any makeup water.

Through arrangements made with the Illinois Department of Conservation, Clinton Lake and much of the area immediately adjacent to the lake are used for public recreation activities including swimming,

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Clinton Lake and accommodate up to 11,000 people per day during peak usage periods. The outflow from Clinton Lake falls into Salt Creek and then flows in a westerly direction for about 56 miles before joining in with the Sangamon River. The Sangamon River drains into the Illinois River that enters the Mississippi River near Grafton, Illinois. The closest use of downstream water for drinking purposes is approximately 242 river miles downstream from Clinton Lake at Alton, Illinois as verified from the Illinois Environmental Protection Agency Public Water Service. Although some farms throughout the Salt Creek drainage area use irrigation water downstream of Clinton Lake, this irrigation water is drawn from wells and not directly from the waters of Salt Creek.

Approximately 810,000 individuals live within 50 miles of the Clinton Power Station. Over half are located in the major metropolitan centers of Bloomington - Normal which is located approximately 23 miles to the north-northwest, Champaign - Urbana which is located approximately 31 miles towards the east, Decatur which is located approximately 22 miles to the south-southwest and Springfield which is located approximately 48 miles to the west-southwest. The nearest city is Clinton, the county seat of DeWitt County. The estimated population of Clinton is approximately 8,000 residents. Outside of the urban areas, most of the land within 50 miles of the Clinton Power Station is used for farming. The principal crops grown are corn and soybeans.

D. NUCLEAR 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

'fission'. During fission, the uranium atom absorbs a neutron and splits to produce fission products, heat, radiation and free neutrons. The free neutrons travel in the reactor core and further absorption of neutrons by uranium permits the fission process to continue. As the fission process continues, more fission products, more radiation, more heat and more neutrons are produced and a sustained reaction occurs. The heat produced is extracted from the fuel to produce steam, which subsequently drives a turbine generator to produce electricity.

The fission products are predominantly radioactive. They are unstable elements that emit radiation as they change from unstable to stable elements. Stable atoms in the materials that make up the components and structures of the reactor may absorb neutrons that are not absorbed by the uranium fuel. In such cases, stable atoms often become radioactive. This process is called activation and the radioactive atoms, which result, are called activation products.

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Fission Products Activation Products Cesium-137 (Cs13') Cobalt-60 (Co60)

Barium-140 (Ba"') Manganese-54 (Mn54)

Cerium-144 (Ce144 ) Iron-59 (Fe59)

Strontium-90 (Sr"0 ) Zinc-65 (Zn 65)

The reactor at the Clinton Power Station is a Boiling Water Reactor

[BWR]. Figure 2 provides a basic plant schematic for the Clinton Power Station and shows the separation of the cooling water from plant water systems. In this type of reactor, the fuel is formed into small ceramic pellets that are loaded into sealed fuel rods.

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I i I I I mII 0

0 en 0o FIGURE 2: CLINTON POWER STATION BASIC PLANT SCHEMATIC

The fuel rods are arranged in arrays, called bundles, which are supported within the massive steel reactor vessel.

The voids between the fuel rods are filled with water. The heat released during the fission of fuel atoms is transferred to the water surrounding the fuel rods. A type of pump that has no moving parts - a jet pump - and recirculation water pumps are used to force the water to circulate through the fuel bundles to assure even cooling and heat removal from the fuel rods. Some of the water that absorbs heat from the fuel rods is changed to steam. The steam is used to drive a turbine that is coupled to a generator, thereby completing the conversion of nuclear energy released during fission into electricity.

After the steam passes through the turbine, it is condensed back into water and returned to the reactor vessel to repeat the cycle. As the water circulates through the reactor pressure vessel, corrosion allows trace quantities of the component and structure surfaces to mix into the water.

The corroded material also contains radioactive substances known 'as activated corrosion products. Radioactive fission and activation products are normally confined to the primary coolant system although small leaks from the primary system may occur.

E. CONTAINMENT OF RADIOACTIVITY During normal operating conditions, essentially all of the radioactivity is contained within the first of several barriers - that collectively - prevent radioactivity from escaping into our environment.

The fuel cladding - metal tubes - provides the first barrier. The ceramic fuel pellets are sealed within zircaloy metal tubes. There is a small gap between the fuel and the cladding where noble gases and volatile nuclides collect.

The reactor pressure vessel and the steel piping of the primary coolant system provide the second barrier. The reactor pressure vessel is a 70 foot high vessel with steel walls ranging from four (4) to seven (7) inches thick that encases the reactor core. The reactor pressure vessel and the steel piping provide containment for all radionuclides in the primary coolant.

The Containment Building provides the third barrier. The Containment Building has a steel-lined, four (4) foot thick reinforced concrete wall which completely enclose the reactor pressure vessel and vital auxiliary equipment. This structure provides a third line of defense against the uncontrolled release of radioactive materials to the environment. The massive concrete walls also serve to absorb much of the radiation emitted during reactor operations or from radioactive materials created during reactor operations.

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F. SOURCES OF RADIOACTIVE EFFLUENTS In an operating nuclear power plant, most of the fission products are retained within the fuel and fuel cladding. However, the fuel manufacturing process leaves traces of uranium on the exterior of the fuel tubes. Fission 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 the corrosion products from component and structural surfaces that have been activated, also get into the primary coolant.

Demineralizers from the water purification systems remove many soluble fission and activation products such as radioactive iodines, strontiums, cobalts and cesiums. Noble gas fission products, activated atmospheric gases introduced with reactor feedwater and some of the volatile fission products such as iodine and bromine, carry over from the reactor pressure vessel to the condenser.

The steam jet air ejectors remove the gases from the condenser and transfer them to the off-gas treatment system. Within the off-gas treatment system, these gases are held up by adsorption on specially treated charcoal beds to allow radioactive gases to decay before they are released through the main ventilation exhaust stack.

Small releases of radioactive liquids from valves, piping, or equipment associated with the primary coolant system may occur in the Containment, Auxiliary, Turbine, Rad Waste and Fuel Buildings. Noble gases become part of the gaseous wastes while the remaining radioactive liquids are collected in sumps and processed for reuse. Processed primary coolant water that does not meet chemical specifications for reuse may also become wastewater. These represent the principal sources of liquid effluents.

Information about radioactive effluents can be found in the Annual Radioactive Effluent Release Report. This report contains a detailed description of all radioactive releases from CPS and the resulting radiation doses for the reporting period.

G. RADIOACTIVE WASTE PROCESSING In a normal operating nuclear power plant, radioactive liquid and gaseous wastes are collected, stored and then processed through treatment systems to remove or reduce most of their radioactivity (excluding tritium) prior to reuse within the plant or discharged to the environment. These processing systems are required by the Clinton Power Station [CPS] Offsite Dose Calculation Manual [ODCM] to be installed and operable to help ensure all releases of radioactive liquid and gaseous effluents are As Low As Reasonably Achievable [ALARA]. As a matter of Station Policy, CPS strives to be a zero (0) liquid release plant and was able to accomplish that commitment throughout 2003.

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The liquid waste treatment systems consist of filters, demineralizers 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 provide assurance that the releases of radioactive materials in liquid effluents will be kept ALARA.

Liquid wastes may be discharged into the plant cooling water stream that varies from approximately 5,000 gallons per minute - when the unit is shutdown - to 567,000 gallons per minute when the unit is at full power. If a planned release were to occur, liquid effluents would be thoroughly mixed with - and diluted by - the plant cooling water as it traverses down a 3.4 mile discharge canal before entering Clinton Lake east of DeWitt County Road 14.

The Clinton Power Station Offsite Dose Calculation Manual requires that liquid effluents will not have a higher concentration of any radioisotope than which is established for continuous exposure to the general public.

This requirement is satisfied at the point in which the liquid effluent is first introduced to the cooling water flow. Thus, this additional dilution - which occurs along the 3.4 mile cooling water canal - further reduces the original concentration[s] of radioisotopes by 1/73 [at minimum flow during unit shutdown] and by 1/1890 [at maximum flow during unit operation] prior to the water entering Clinton Lake.

The concentrated radioactive solids captured from the liquid waste treatment system are processed and temporarily stored on-site until scheduled for shipment off-site for disposal at a licensed low-level waste disposal facility.

The gaseous effluents from the main condenser are held up in the off-gas charcoal beds for a minimum of 46 hours5.324074e-4 days <br />0.0128 hours <br />7.60582e-5 weeks <br />1.7503e-5 months <br />. With most of the radionuclides present having a radioactive half-life of less than eight (8) hours, this hold up process allows for their radioactive decay. If the gaseous effluents from the ventilation exhaust system for the Containment Building and Secondary Containment structure exceed conservatively established set points, these effluents are processed through charcoal beds and High Efficiency Particulate Air [HEPA] filters within the Standby Gas Treatment System before being released to the environment.

The combination of HEPA filters and charcoal bed filtration is rated to be 95% efficient for removing iodines and greater than 99% efficient for removing any particulate material that is larger than one micron [one millionth of one inch] in diameter.

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L.

L L.. ,

L RAIbIOLOGICAL ENVIRONMENTAL

.MONITORING PROGRAM Li

Ill. RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM A. Program Description The Clinton Power Station is required to maintain a Radiological Environmental Monitoring Program [REMP] in accordance with the Code of Federal Regulations (CFR) Title 10, Section 20.1501 and Criterion 64 of CFR Title 10, Part 50, Appendix A. The program was developed using the following guidance published by the United States Nuclear Regulatory Commission [USNRC]:

Regulatory Guide 4.1, "Programs for Monitoring Radioactivity in the Environs of Nuclear Power Plants"

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

The REMP is an extensive program of sampling, measuring and analyzing that was instituted to monitor the radiological impact of reactor operationis] on the surrounding environment. Objectives of the program include the following:

identification, measurement and evaluation of existing radionuclides in the. environment of the Clinton Power Station and fluctuations in radioactivity levels that may occur

evaluation of the measurements to determine the impact of Clinton Power Station operations relative to the local radiation environment

collection of data needed to refine environmental radiation transport models used in offsite dose calculations

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 (2) phases, Pre-Operational [Pre-Op] and Operational.

The Pre-Operational portion of the program was initiated in May 1980 and was completed on 27 February 1987 to establish the baseline for the local radiation environment. Assessment of the operational impact of the Clinton Power Station on the radiation environment is based on data collected since the beginning of reactor operation[s]. The operational phase implements confirmatory measurements to verify that the in-station controls for the release of radioactive material are functioning as designed.

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AmerGen Energy Company, LLC currently maintains a contract with Environmental Inc. Midwest Laboratory, for the analysis of all radiological environmental samples. Environmental Inc. is located in Northbrook, Illinois. Samples are currently collected by AmerGen Energy Company personnel and then shipped to the Environmental, Inc. laboratory for analysis. After analysis, environmental samples are saved at the laboratory for a specified period of time in case any additional follow up analysis is required. Analytical results are then reported back monthly to CPS for review by the ODCM Program Manager.

Current regulatory guidance recommends evaluating direct pathways, or the highest trophic level in a dietary pathway, that contribute to an individual's dose. Figure 3 shows the basic pathways of gaseous and liquid radioactive effluents to the public. The "important pathways" selected are based primarily on how radionuclides move through the environment that will eventually expose the public - taking into consideration - man's use of the environment. The scope of the program includes the monitoring of five (5) environmental elements:

direct radiation

atmospheric

aquatic

terrestrial environments

ground and surface water Each pathway is monitored at "Indicator" and "Control" Locations.

Indicator Locations are generally within a ten (10) mile radius of the station that is expected to mimic station effects, if any exist. Control Locations are located greater than ten (10) miles from the plant - far enough away - so as not to be influenced by station operations. These Control Location samples provide the basis by which to measure any fluctuations in radioactivity from Indicator Locations relative to natural phenomena and fallout. Thus any increase in radioactive material concentration from an Indicator Location may be - due in part - to station operations.

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& RELEASES DILUTED BY AT ANIMALS (MILK, MEAl )

IAI to PLUME AND EXPOSURE INHALATION 4&

AIRBORNE RELEASES CLINTON POWER STATION I

CONSUMED BY PEOPLE LIOUID I

RELEASES PEOPLE RELEASES SUMED CON DILUTED CONSUMED BY PEOPLE BY LAKE BY ANIMALS CONSUMED K DRINKING WATERS q*!D BY PEOPLE FISH SHORELINE A :

EXPOSURE FIGURE 3: POTENTIAL EXPOSURE PATHWAYS OF MAN DUE TO RELEASES OF FU :RADIOACTIVE MATERIAL TO THE ENVIRONMENT

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coQI

Sampling locations were established by considering site meteorology, area population distribution, site hydrology, and land use characteristics of the local area. These locations were selected primarily on the basis of where the highest predicted environmental concentrations would occur.

Locations of sampling stations are shown on maps in Figures 4 through 7. Table[s] 2-A and 2-B provide information on sample location, media sampled at each of these location[s], and a brief description of each location where samples were taken. The location is listed according to distance (in miles) and the meteorological compass sector in relationship to the Station Heating, Ventilation, and Air Conditioning [HVAC] Vent.

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N FIGURE 4.- RE/P SAMPLE L OCA TIONS WI THIN i HIL E

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FIGURE 5. REMP SAMPLE LOCA TIONS FROM I - 2 MILES

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FIGURE 6: REMP SAMPLE L OCA TIONS FROM 2 - 5 MILES A-page 25 of 119 --

FTGURE 7: REMP SAMPLE L OCA TIONS GREATER THAN 5 MILES

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TABLE 2-A CPS RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM SAMPLING LOCATIONS TLD Sites Station -1 .D-. .S 1Distance Station:',.";'

Station - ..

Description - ,

Sector

.: Dista'nce~

Ditnce

________I, Code __

Description -

ector m iles) -C ode __ _ _ _ __ _ _ -( ilIes)j Supplemental CL-15 Control N 0.9 CL-44 Inner Ring SSE 2.3 CL-36 Inner Ring N 0.6 CL-56 Outer Ring SSE 4.1 Supplemental CL-37 Special Interest N 3.4 CL-114 Control SSE 12.5 CL-75 Special Interest N 0.9 CL-11 Control S 16 CL-76 Outer Ring N 4.6 CL-45 Inner Ring S 2.8 Supplemental CL-3 Control NE 0.7 CL-57 Outer Ring S 4.6 CL-22 Inner Ring NE 0.6 CL-46 Inner Ring SSW 2.8 CL-78 Outer Ring NE 4.8 CL-58 Outer Ring SSW 4.3 Supplemental Supplemental CL-2 Control NNE 0.7 CL-97 Control SSW 10.3 Supplemental CL-5 Inner Ring NNE 0.7 CL-4 Control SW 0.8 Supplemental CL-77 Outer Ring NNE 4.5 CL-33 Control SW 11.7 Supplemental CL-99 Control NNE 3.5 CL-47 Inner Ring SW 3.3 CL-23 Inner Ring ENE 0.5 CL-60 Outer Ring SW 4.5 Supplemental CL-65 Special Interest ENE 2.6 CL-6 Control WSW 0.8 CL-79 Outer Ring ENE 4.5 CL-48 Inner Ring WSW 2.3 Supplemental CL-91 Control ENE 6.1 CL-61 Outer Ring WSW 4.5 Supplemental CL-8 Control E 2.2 CL-1 Inner ring W 1.8 CL-24 Inner Ring E 0.5 CL-49 Special Interest W 3.5 CL-41 Special Interest E 2.4 CL-74 Special Interest W 1.9 CL-53 Outer Ring E 4.3 CL-80 Outer Ring W 4.1 Supplemental CL-84 Control E 0.6 CL-34 Inner Ring WNW 0.8 CL-42 Inner Ring ESE 2.8 CL-64 Special Interest WNW 2.1 CL-54 Outer Ring ESE 4.6 CL-81 Outer Ring WNW 4.5 Supplemental CL-7 Control SE 2.3 CL-35 Inner Ring NW 0.7 CL-43 Inner Ring SE 2.8 CL-51 Outer Ring NW 4.4 CL-55 Outer Ring SE 4.1 CL-52 Outer Ring NNW 4.3 Supplemental CL-90 Control SE 0.4 CL-63 Inner Ring NNW 1.3

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TABLE 2-B CPS RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM SAMPLING LOCATIONS Station D.:cription pt

- Air Surface-. 'Drinking~' Food Ml Ground Co e

__ __ __ _ __ __ _.-W ater W ater .Prod ucts W te CL-1 Camp Quest (1.8 miles W) .

CL-2 Site's main access road (0.7 miles NNE) 4 CL-3 CL_ ___

Site's NE)_ secondary access road (0.7 miles _ _ _

CL-4 Residence near recreation area (0.8 .

_ __ miles SW )_ _ _ _

CL-6 CPS recreation area (0.7 miles WSW) _

CL-7 Mascoutin Recreation Area (2.3 miles l SE)

CL-7D Mascoutin Recreation Area (2.3 miles

__ _ _ ESE)

CL-8 DeWitt Cemetery (2.2 miles E) 4 CL-11* Illinois Power substation (16 miles S) 4 CL-12 DeWitt Pumphouse (1.6 miles E) .4 CL-13 Salt Creek bridge on Rt.10 (3.6 miles

__ _ _ SW ) _ _ _

CL-14 Station Plant Service Building _ 4 CL-15 Near residence on Rt. 900N (0.9 miles C L_____ N) _ _ _ _ _ _ _

CL-90 Start of discharge flume (0.4 miles SE) 4 CL-91 Parnell Boat Access (6.1 miles ENE) 4 .

CL-94 Old Clinton Road (0.6 miles E) ._.

CL-99 North Fork canoe access area (3.5 miles NNE)

CL-114* Residence in Cisco (12.5 miles SSE) J CL- 115 Sites secondary access road (0.7 miles CL-116 Pasture in rural Kenney (14 miles WSW) 4 CL-117 Resident north of site (0.9 miles N)

CL-118 Site's main access road (0.7 miles NNE) _

Station , ,:. Grass..

-. I Shoreli ne SCode I . Description . . .: - Fish Sediment CL-1 Camp Quest (1.8 miles W) .

CL-2 Site's main access road (0.7 miles NNE) _

CL-7B SE of site on Clinton Lake (2.1 miles 4

__ _ _ SE ) _ _ _ _ _ _

CL-8 DeWitt Cemetery (2.2 miles E) . _

CL-19 End of the discharge flume (3.4 miles E) 4J CL-105* Lake Shelbyville (50 miles S) J CL-116 Pasture in rural Kenney (14 miles WSW) I

Control Location a/ ODCM required samples a Supplemental non-ODCM required samples Note: Location[s] are listed by distance [in miles] along with meteorological sector from the Station's HVAC Vent.

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TABLE 3-A CPS REMP REPORTING LEVELS FOR RADIOACTIVITY CONCENTRATIONS IN ENVIRONMENTAL SAMPLES Analysis Water Airborne or Particulate Fish (pCi/kg-.(CI)Milk -Food Products:,

pclg-wt Gases (pqijM3): wet)

H3 20,boo , --- _ --- _---

Mn5 4 1,000 --- 30,000 --- ---

Fe59 400 --- 10,000 --- ---

Co55 1,000 --- 30,000 --- ---

Co60 300 10,000 Zn65 300 --- 20,000 ---

Zr/Nbb" 400c --- --- ---

1131 2b 0.9 --- 3 100 Cs' 34 30 10 1,000 60 1,000 Cs1 37 50 20 2,000 70 2,000 Ba/La... 200c --- 1 300 ---

a If no drinking water pathway exists, a value of 30,000 pCi/I may be used.

b If no drinking water pathway exists, a value of 20 pCi/I may be used.

c Total for parent and daughter.

TABLE 3-B DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALYSISd LOWER LIMIT OF DETECTION (LLD)

Wat C.Airborne Fish Food rdct Sedimenti pik.

Analysis Particulate or (p:ilkg:Ml Gs (pi/rn)

(p~iI) - et)(pC ill): -(pCi/kg - dy

__ _ _ _ G _ a 's_____--_e

_ __ _ _ _ _w t) t Gross Beta 4 0.01 H3 2,000_

Mn 54 15 130 Fer 30 260 Co58 Co 0 15 130 5

Zn6 30 260 Zr95 30 Nb"s 15 .

113l 1f 0.07 1 60 Cs1 4 15 0.05 130 15 60 150 Cs 137 18 0.06 150 18 80 180 Ba 140 60 60 La"°4 15 . 15 d This list does not mean these nuclides are the only ones considered. Other nuclides are identified and reported when applicable.

e If no drinking water pathway exists, a value of 3,000 pCi/I may be used.

f If no drinking water pathway exists, a value of 15 pCi/I may be used.

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Sample Analysis Concentrations of radioactivity present in the environment.will vary due to factors such as weather conditions, variations in the sampling collection technique and during sample analysis.

Several types of measurements may be performed to provide information about the types of radiation and radionuclides present.

Analyses that are performed on environmental samples collected for the CPS REMP include the following:

Gross beta analysis

Gamma spectroscopy analysis

Tritium analysis

Strontium analysis

Gamma dose (TLDs only)

A gross alpha and beta analysis measures the total amount of alpha and beta emitting radioactivity present in a sample. Both radiations may be released by many different radionuclides. Gross activity measurements

- while useful as a general trend indicator - are not used to establish specific radionuclide concentrations. Therefore, gross activity analysis will only indicate whether the sample contains normal or abnormal concentrations of alpha or beta emitting radioactivity and serves as a precursor in which to identify samples that may require additional follow up analysis.

Samples are primarily analyzed for plant-contributed radionuclides released to the environment. Irrespective of station operations and since naturally occurring radionuclides are abundant in all environmental samples, any positive result for a certain radionuclide, including gross alpha / beta measurements, will be discussed further in this section of the report.

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B. Direct Radiation Monitoring Radionuclides present in the air - in addition to those deposited in or on top of the ground - cause human exposure by immersion in the atmosphere or by deposition on the ground. TLDs [Thermo-Luminescent Dosimeters] are used to measure the ambient gamma radiation levels at 54 locations surrounding Clinton Power Station.

TLDs are crystalline devices that store energy when they are exposed to radiation. They can be processed months after their exposure with a minimal loss of this collected information. This makes them well suited for quarterly environmental radiation measurements.

During TLD processing, stored energy is released as light and measured by a TLD reader. The light intensity is proportional to the radiation dose the TLD was exposed to. The TLDs used for environmental monitoring around the Clinton Power Station are capable of measuring environmental levels of radiation as low as approximately 20 mRem per quarter.

Monitoring stations are placed near the site boundary and approximately five (5) miles from the reactor, in locations representing the 16 meteorological compass sectors. Other locations are chosen to measure the radiation levels at places of special interest such as nearby residences, meeting places and population centers.

Control Locations are located further than ten (10) miles from the station so that they will not be influenced by station operations.

TLD measurements register the gamma ray exposure in milli-Roentgen [mR]. For reporting purposes mR is numerically equivalent to that of mRem. Consequently, these terms are used interchangeably throughout this Annual Report.

A total of 213 TLD measurements were made throughout 2003. The average quarterly dose from our Indicator Location[s] was 20.7 mrem. At our Control Locations, the average quarterly dose was 20.7 mRem. These quarterly measurements ranged from 18.0 to 22.9 mRem for Indicator TLDs and 20.1 to 21.8 mRem for Control TLDs.

Figure 8 compares the 2003 quarterly TLD results with our Pre-Operational TLD quarterly averages.

Average doses (+/-2 standard deviations) - broken down by calendar quarter - are shown in Table 4 for both Indicator and Control Locations.

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TABLE 4 AVERAGE QUARTERLY TLD RESULTS Average +/- 2o (mRem/quarter) 2na 21.9 +/- 3.8 20.9 +/- 3.6 18.8 +/- 3.2 13ra I[see below] A 20.8 +/- 2.6 i19.1 +/- 4.7 4i 24.3 +/- 3.1 119.9 +/- 3.5 117.8 +/- 2.2 iSt 16.5 +/- 1.0 21.2 +/- 2.5 16.4 +/- 2.9 2na 21.3 +/- 3.0 19.9 +/- 4.1 18.8 +/- 3.2 3r [see below] A 22.3 +/- 3.7 19.1 +/- 4.7 4W 24.6 +/- 4.5 19.5 +/- 5.0 17.8 +/- 2.2 A Clinton's 2002 3rd Quarter ODCM REMP TLD results - both Indicator and Control -

were determined to be inconclusive from our Vendor. ODCM REMP TLD results were irradiated from an external source of radiation most likely due to security package scanning during air transportation from California to Illinois prior to placement in the environment. This resulted in inconclusive readings after adding this unknown exposure to their quarterly environmental exposure.

FIGURE 8: DIRECT RADIATION COMPARISON 50 i_

45 40 0EPRE-01 E35 30 z a2003 E 25 INDICA TOR 205 2003 C0 15 DNTROL 10 __ __ _

1st 2nd 3rd 4th QUARTER Given the above observations - and after factoring statistical variances - there were no significant increases in environmental gamma radiation levels resulting from station operations of the Clinton Power Station.

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COL

C. Atmospheric Monitoring The inhalation and ingestion of radionuclides in the air is a direct exposure pathway to man. A network of ten (10) active Air Sampling Stations around the Clinton Power Station monitor this pathway. There are nine (9) 'Indicator' Air Sampling Station locations strategically placed in areas that are most likely to reveal any measurable effects due to the release of radioactive effluents from the Clinton Power Station. The

'Control' Air Sampling Station location is located approximately 16 miles south of the station in an area that is totally independent from any of the effects from station operations. Historical meteorological data further supports that this 'Control' Air Sampling Station location is upwind from the station.

Mechanical air samplers are used to draw a continuous volume of air through a filter and charcoal cartridge collecting any particulates and radioiodines that may be present in the atmosphere. These samplers are equipped with a pressure-sensing flow regulator to maintain a constant sampling rate of air flow of about one (1) cubic foot per minute (CFM). The total volume is then calculated based upon the amount of time the air sampler was in operation coupled with this flow rate. The air sampling equipment is maintained and calibrated by Clinton Power Station personnel using reference standards that are traceable back to the National'Institute of Standards and Technology (NIST).

Air samples are collected every week and analyzed for gross beta and I1"3 activities. Quarterly, all air particulate filters collected throughout this period are combined and counted for gamma isotopic activity. Since the intent of particulate sampling is to measure airborne radioactivity released from the station, the counting of short-lived daughter products -

produced by the decay of naturally occurring radon and thoron - may otherwise mask any station contributions. Therefore, particulate filters are not analyzed for at least five (5) days after their collection. This allows for the radioactive decay of naturally occurring short-lived daughter products, thus reducing any contribution interference to the overall gross beta activity.

Results from the gross beta airborne particulate analysis provides for comparisons between both Indicator and Control Locations - including those locations relative to spatial and temporal differences - throughout the year. These results are reported in units of pico-curies per cubic meter

[pCi/i 3]. The calculated annual average was 0.026 pCi/m 3 for all Indicator Locations and 0.027 pCi/M 3 for the Control Location. These results are consistent with our Pre-Operational annual averages for both Indicator and Control Locations that were 0.027 pCi/i 3 .

The location with the highest calculated annual average was measured at Indicator Location CL-3 that is located 0.7 miles northeast of Clinton Power Station. This location had a monthly average concentration of 0.027 pCi/m3 . Individual location averages for 2003 are presented in Table 5

-- page 33 of 119 --

Minor fluctuations in the gross beta concentrations were noted throughout 2003. The general trend for average weekly gross beta concentrations from the Indicator Locations correlated to the trend for the Control Locations throughout the monitoring period. This correlation is evidenced by the similarity of the trends in the average monthly gross beta concentrations contained within Figure 9. There were no significant differences observed between these individual locations. Monthly averages for both Indicator and Control Locations for the 2003 year are presented in Table 6.

Fluctuations observed in the gross beta activity over the year can be attributed to changes in the environment, specifically during seasonal changes.

All gross beta concentrations for 2003 were found to be within normal background levels and no significant increases were noted as a result of station operations.

Naturally occurring Be7 [Beryllium] was the only gamma-emitting radionuclide detected in the analysis of particulate filters.

No measurable contribution to the overall level of airborne particulate radioactivity was identified as a result of station operations. The radioactivity that was detected - naturally occurring Be' - is normally found in the environment and is consistent with the expected concentrations of natural radioactivity and fallout from prior atmospheric nuclear weapons testing.

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ANNUAL AVERAGE GROSS BETA CONCENTRATIONS IN AIR PARTICULATES Average +/- 2a (pCi/m 3 )

Station Description 2002 2003 CL-1 Camp Quest 0.025 +/- 0.010 0.026 +/- 0.009 CL-2 Site's Main Access Road 0.026 +/- 0.010 0.026 +/- 0.009 CL-3 Site's Secondary Access Road 0.026 +/- 0.011 0.027 +/- 0.009 CL-4 Residence near Recreation Area 0.025 +/- 0.010 0.025 +/- 0.009 CL-6 CPS Recreation Area 0.025 +/- 0.010 0.025 +/- 0.009 CL-7 Mascoutin Recreation Area 0.025 +/- 0.010 0.025 +/- 0.009 CL-8 DeWitt Cemetery 0.026 +/- 0.011 0.027 +/- 0.010 CL-11* Illinois Power Substation 0.026 +/- 0.012 0.027 +/- 0.008 CL-15 Near Residence on Route 900N 0.025 +/- 0.011 0.025 +/- 0.008 CL-94 Old Clinton Road 0.025 +/- 0.010 0.026 +/- 0.008

Control Station TABLE 6 AVERAGE MONTHLY GROSS BETA CONCENTRATIONS IN AIR PARTICULATES Average +/- 2a (pCi/m 3 )

MONTH 2002 Indicator 2003 Indicator 2002 Control 2003 Control January 0.032 +/-0.003 0.031 +/-0.002 0.032 +/-0.013 0.032 +/-0.009 February 0.023 +/-0.001 0.025 +/-0.003 0.022 +/-0.014 0.025 +/-0.011 March 0.023 +/-0.003 0.027 +/-0.002 0.022 +/-0.013 0.027 +/-0.016 April 0.020 +/-0.002 0.019 +/-0.002 0.018 +/-0.009 0.020 +/-0.010 May 0.017 +/-0.002 0.018 +/-0.002 0.018 +/-0.007 0.020 +/-0.011 June 0.021 +/-0.002 0.022 +/-0.003 0.023 +/-0.010 0.027 +/-0.007 July 0.027 +/-0.004 0.023 +/-0.003 0.030 +/-0.016 0.027 +/-0.007 August 0.022 +/-0.002 0.027 +/-0.002 0.022 +/-0.013 0.027 +/-0.017 September 0.029 +/-0.004 0.030 +/-0.004 0.031 +/-0.017 0.031 +/-0.015 October 0.027 +/-0.003 0.027 +/-0.001 0.030 +/-0.015 0.029 +/-0.015 November 0.030 +/-0.003 0.030 +/-0.001 0.031 +/-0.023 0.033 +/-0.015 December 0.032 +/-0.003 0.030 +/-0.003 0.034 +/-0.017 0.028 +/-0.006

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PRE-OP (ALL SITES)

-_-2003 CONTROL 0.052 --- 2003 INDICATOR 0.047 0.042 -

0.037 -

0.032 G.

0.0227>

P0.007 to.0 I ,- ba ~ 0 t 0 &+

MONTH FIGURE 9: AIR PARTICULATE GROSS BETAiACTIVIT COMPARISON

-- page 36 of 119--

CMAI5

D. Aquatic Monitoring The Clinton Power Station utilizes a man-made lake as the source of cooling water and returns this cooling water back to the same lake while most nuclear power stations use once-through flow methods from a river, an ocean or body of water much larger than Clinton Lake. If regulated radioactive liquid effluents were to be discharged from the Clinton Power Station into the cooling water outfall, long-lived radioisotopes could build up over a period time as the same water is reused on recurring trips through the station. Cooling water that exits from the plant will travel back into the eastern arm of Clinton Lake and then into the northern arm of the lake before returning back into the plant. Although the only user of Clinton Lake as a source of drinking water is CPS itself, Clinton 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 from liquid effluents. Aquatic monitoring provides for the collection of fish and shoreline sediments to detect the presence of any radioisotopes related to the operation of the Clinton Power Station. These samples are analyzed for naturally occurring and man-made radioactive materials. Indicator samples were taken from various locations throughout Clinton Lake whereas the Control samples are obtained from Lake Shelbyville - approximately 50 miles south of Clinton Power Station - thus serving as an excellent data comparison to our station operations.

The overall concentration[s] of naturally occurring radioisotopes in samples collected near the Clinton Power Station were comparable to the concentrations in samples collected from the Control Location at Lake Shelbyville. The operation of Clinton Power Station had no measurable contribution to the radioactive inventory towards the aquatic environment.

Fish Various samples of fish are collected from Clinton Lake and Lake Shelbyville. From both lakes; our primary interest consists of largemouth bass, crappie, carp, and bluegill. The selections of these species are the fish most commonly harvested from the lakes by sporting fishermen. Fish will ingest both floating sediments and during feeding - prey on other organisms - that will also ingest sediments that may otherwise retain radionuclides. A radiological analysis from fish samples provides key information on the potential ingestion of radionuclides by humans via the aquatic pathway. These samples are collected semi-annually and analyzed by gamma spectroscopy.

The gamma spectroscopy analysis revealed that fish samples - from Clinton Lake and Lake Shelbeyville from 50 miles away - both identified the presence of naturally occurring K"0 [Potassium] in all species. All other

-- page 37 of 119 --

analytical results were less than the Lower Limit of Detection (LLD) for each radionuclide of interest.

Shoreline Sediments Samples of shoreline sediments are collected at Clinton Lake.

Radiological analyses of shoreline sediments provide information on any potential shoreline exposure to humans, determining long-term trends, and the accumulation of long-lived radionuclides from our environment.

Samples are collected semi-annually and then analyzed for gamma isotopic activities.

Shoreline sediment samples are dried prior to analysis and the results are reported in pCi/g [pico-curies per gram] dry weight. Only naturally occurring radioisotopes were present in samples taken at Clinton Lake.

E. Terrestrial Monitoring In addition to direct radiation, radionuclides that are present in our atmosphere expose individuals when they are deposited on plant and soil surfaces. Consuming animal products - such as meat and milk -

subsequently ingest them either directly by man or indirectly. To monitor this food ingestion pathway, samples of green leafy vegetables, grass and milk are analyzed.

Surface vegetation samples are collected monthly during the growing season from a number of locations for the purpose of monitoring the potential buildup of atmospherically deposited radionuclides. Because the radionuclides of interest - relative to Clinton Power Station operations -

are already present within our environment as a result of several decades of worldwide fallout or because they are naturally occurring, the presence of these radionuclides is anticipated from all of the samples that are collected. These samples are analyzed by gamma spectroscopy.

The gamma spectroscopy analysis revealed the presence of naturally occurring K0 [Potassium] and Be7 [Beryllium] in several samples.

All other analytical results were less than the Lower Limit of Detection (LLD) for each radionuclide. The operation of Clinton Power Station had no measurable contribution to the radioactive concentration of the terrestrial environment.

Milk There is no known commercial production of milk for human consumption within a five (5) mile radius of the Clinton Power Station.

However, milk samples are collected from a dairy located approximately 14 miles west-southwest of the station (twice a month during May through October and once a month during November through April to coincide with the grazing seasons). These samples are analyzed for 13" and gamma isotopic activities.

-- page 38 of 119 --

The results from the analyses showed only naturally occurring K" and there was no 1131 detected in any of the milk samples collected.

Grass In addition to milk samples, grass samples are also collected at three (3) Indicator Locations and at one (1) Control Location. These samples are collected twice a month during May through October and once a month during November through April (when available). Grass samples are analyzed for gamma isotopic activity including I"'.

The results from the analyses showed only naturally occurring Be7 and K" in these samples. There was no V'" detected in any of the grass samples collected.

Vegetables The Clinton Power Station obtains broadleaf vegetable samples from three (3) Indicator Locations and at one (1) Control Location. The Indicator Locations are located in the meteorological sectors with the highest potential for surface deposition and the Control Location is in a meteorological sector and distance - approximately 13 miles upwind -

which is considered to be unaffected by station operations. Samples are collected once a month during the growing season (June through September) and then are analyzed for gross beta and gamma isotopic activities including 1'3'.

The results from the analyses identified only naturally occurring Be7 and K0 from these samples. There was no 1I3' detected in any of the vegetable samples collected.

F. Water Monitoring Water monitoring provides for the collection of' drinking water, surface water, and ground water (well water) samples to detect the presence of any radioisotopes relative to station operations at the Clinton Power Station.

The only identified user of water from Clinton Lake for domestic purposes is the Clinton Power Station. Samples taken are analyzed for naturally occurring and man-made radioactive isotopes. Average gross beta concentrations in surface, drinking and well water[s] are presented within Table 7 at the end of this section.

Water monitoring results show no measurable effects resulting from the operation of the Clinton Power Station.

- page 39 of 119 --

Drinking Water A composite water sampler is located at the Station Service Building that 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 our independent laboratory service represents a composite of the individual samples that are collected throughout the month. This monthly composite sample is then analyzed for gross beta and gamma isotopic activities. A portion of each of these monthly samples is further mixed with the other monthly samples collected during each calendar quarter. This quarterly composite sample is then analyzed for H3 [Tritium].

Gross beta activity ranged from 0.9 to 2.6 pCi/I. These levels are attributed to very fine particles of sediment containing K0 that are not removed during the chlorination and filtration process.

The results from the H3 and gamma-emitting radioisotope analysis were all less than the Lower Limit of Detection (LLD).

Surface Water Composite Water Samplers are installed at three (3) locations sampling surface water from Clinton Lake. These Composite Water Samplers collect a small volume of surface water at regular intervals and discharge the sample into a large sample collection bottle. Monthly, this water is then collected.

Two (2) of the Composite Water Samplers are located upstream from Clinton Power Station and are therefore unaffected by any plant liquid releases occurring downstream. The third Composite Water Sampler is positioned to sample water being released from the plant at the start of the plant discharge flume. Grab samples are also collected from one (1)

Indicator Location on Clinton Lake.

Surface water samples are analyzed for gamma isotopic and H3

[Tritium] activities. Additional analyses for 13' activity are performed on water samples taken from the discharge flume. Tritium analyses are performed quarterly from all of the monthly composites from all Water Composite Sample locations.

These results are attributed to naturally occurring K4 suspended as fine sediment particles in the water. Other types of samples - such as Shoreline Sediments - have further validated the presence of K" in Clinton Lake All samples analyzed for H3 [Tritium] were all less than the Minimum Detectable Activity (MDA). Pre-Operational H3 [Tritium] concentrations ranged from 220 to 330 pCi/I. As noted in Reference E187, previous nuclear weapons testing have increased the pre-1960 levels of Tritium (6 -

24 pCi/I) by a factor of approximately 50 to 300 - 1,200 pCi/I.

-- page 40 of 119 --

nuclear weapons testing have increased the pre-1960 levels of Tritium (6 -

24 pCi/I) by a factor of approximately 50 to 300 - 1,200 pCi/l.

Gamma-emitting radioisotopes were all below the Lower Limits of Detection (LLD) and there was no 13' detected in any of the surface water samples that were collected.

Well Water Every quarter - both treated and untreated well water samples - are collected from the well serving the Village of DeWitt and from a well serving the Illinois Department of Conservation at the Mascoutin State Recreational Area. Samples are analyzed for H3 [Tritium] and gamma isotopic activities as required.

Gamma-emitting radioisotopes were all below the lower limits of detection (LLD) and there was no H3 detected in any of the well water samples that were collected.

-- page 41 of 119 --

TABLE 7 AVERAGE GROSS BETA CONCENTRATIONS IN DRINKING, SURFACE AND WELL WATER Average +/-2a (pCi/I)

STATION DESCRIPTION 2002 2003 Drinking Water CL-14 Station Service Building 1.2 +/- 0.7 1.4 +/- 1.0 Fluctuations observed in the gross beta activity over the year can be attributed to changes in the environment, specifically during seasonal changes.

-- page 42 of 119-

G. Quality Assurance Program To establish confidence and credibility that both the data collected and reported are accurate and precise, REMP activities are incorporated into the Quality Assurance (QA) program, which includes assessments, audits, and surveillances. The Quality Assurance program requires the following:

Participation in inter-comparison programs, such as the Environmental Resource Associates (ERA) crosscheck program.

Audits of analysis laboratory functions and their facilities.

Periodic review of the Clinton Power Station procedures specifying sampling techniques.

Duplicate analysis of all samples received (excluding TLDs).

This requirement is to validate laboratory precision.

The routine counting of quality control samples.

The analytical results provided by the laboratory were reviewed monthly to ensure the required minimum sensitivities have been achieved and the proper analyses have been performed.

The station's Vendor - Environmental Inc., Mid-West Laboratory - has participated in interlaboratory comparison (crosscheck) programs since the formulation of their quality control program in December 1971. These programs are operated by agencies that supply environmental type samples - such as milk and water - containing concentrations of radionuclides that are only known by the issuing agency and not the participating laboratory. The purpose of such a program is to provide an independent check on the laboratory's analytical procedures and alert them to any possible problems.

Results from the 2003 Environmental Inc., Mid-West Laboratory cross-check program are shown in Appendix A of this report. CPS personnel have reviewed the 2003 results concluding the interlaboratory program utilized by Environmental Inc. effectively supports the 2003 REMP Program at CPS.

H. Changes to the REMP During 2003 Periodic revisions to the Radiological Environmental Monitoring Program [REMP] are necessary so as to maintain the monitoring of the environmental exposure pathways at the highest level of quality. Revisions may result from items identified during the performance of the Annual Land Use Census, incorporation of any revised or new regulatory requirements or from Quality Assurance Audits.

During the course of 2003, there were no changes made to the REMP program as delineated within the Off-Site Dose Calculation Manual.

-- page 43 of 119 --

2003 ANNUAL LANb

-USE CENSUS

IV. 2003 ANNUAL LAND USE CENSUS Each year an Annual Land Use Census is conducted to ensure that changes in the use of areas - at and beyond the site boundary - are identified and that any necessary modifications to the Radiological Environmental Monitoring Program [REMP] are made. The information gathered during the Annual Land Use Census is used for Radioactive Effluent Technical Specifications [RETS] dose assessments that feeds into the REMP ensuring that these programs accurately reflect the environment surrounding CPS.

The Annual Land Use Census is conducted during the growing season satisfying the CPS Offsite Dose Calculation Manual (ODCM) requirements. The Annual Land Use Census is conducted to identify the nearest milk animals, the nearest residence and the nearest garden of greater than 538 square feet that produce broadleaf vegetation - all within a distance of five (5).miles - in each of the sixteen (16) meteorological sectors.

The Annual Land Use Census shall also identify - within a distance of three (3) miles - the location in each of the 16 meteorological sectors all milk animals and all gardens of greater than 538 square feet that produce broadleaf vegetation.

A detailed summary of the Annual Land Use Census results is provided in a separate document that is permanently archived at CPS.

In order to assemble as much information as possible, the location of area residences, their critical age groups, milking animals, the size and vegetable content of gardens and along with livestock, were all recorded from each sector within five (5) miles, as stated above.

These land use. parameters are then used in the assessment of potential radiological doses to individuals for the stated sectors. This information provides the most restrictive parameters used for dose assessments that will result in the highest calculated dose within each sector. Additional information regarding dose assessments to members of the public is provided within the 2003 CPS Annual Radioactive Effluent Release Report.

Area residents were surveyed who reside within a five (5) mile radius of the station by either direct contact, via a mail-in questionnaire, a telephone interview or direct observation within the 16 geographical sectors surrounding CPS. The' information provided within this section of the report is a summary of the 2003 results from that census. The nearest residence, garden, and milk animal for each meteorological sector - out to a distance of five (5) miles - are illustrated in Table 8.

Data from the 2003 Annual Land Use Census was obtained using the following procedure:

When mail-in response[s] were unresponsive, door-to-door canvassing of residences / land owners identified from the 2002 Annual Land Use Census was performed with a DeWitt County plat book available if needed.

Telephone solicitations of persons who were unavailable during the 'door-to-door' survey or who did not mail back their questionnaire.

-- page 44 of II9 --

By direct observation of land when the aforementioned methods proved to be unsuccessful. If an individual was unable to be contacted, data from the previous year was used.

State and local agencies were solicited for information.

-- page 45 of 119 --

TABLE 8 ANNUAL LAND USE CENSUS

SUMMARY

RESULTS Nearest Milk Sector Nearest Residence Nearest Garden Animal [miles] -

[miles] [miles] (See Note)

N 0.9 0.9 0.9 NNE 1.0 2.9 2.3 NE 1.3 2.1 3.4 ENE 1.8 2.6 4.1 E 1.0 1.0 1.0 ESE 3.2 3.3 N/A SE 2.8 4.4 4.4 SSE 2.4 2.8 N/A S 3.0 4.1 N/A SSW 2.9 N/A 3.4 SW 0.7 N/A 3.6 WSW 1.6 2.2 3.4 W 1.6 2.0 2.1 WNW 1.6 2.0 N/A NW 1.6 3.7 2.4 NNW 1.7 2.3 1.3 N/A None identified within five (5) miles of CPS within this meteorological sector.

Note - Not used for human consumption The Annual Land Use Census results were validated to ensure that the REMP will provide representative measurements of radiation and radioactive materials from exposure pathways and for radionuclides that lead to the highest potential radiation exposure to the general public resulting from station operations.

After carefully reviewing the Annual Land Use Census results - coupled with station effluent release data provided by the CPS Chemistry Department - an evaluation is conducted to ensure current ODCM sampling location requirements are adequate. As a result of that evaluation, no changes in REMP sampling locations were required.

-- page 46 of 119 --

Summary of Changes Identified in 2003 Annual Land Use Census Nearest Residence There were no changes in census locations for the nearest resident[s] identified within the sixteen (16) geographical sectors and is indicated below:

2002 Census Location 2003 Census Location No Changes No Changes There were no changes or additions to the REMP as a result of the Nearest Resident Census.

Garden Census Changes in census locations for the nearest garden were identified in seven (7) of the sixteen (16) geographical sectors and are indicated below:

2002 Census Location 2003 Census Location 1.8 miles ENE 2.6 miles ENE 2.7 miles SSE 2.8 miles SSE 2.3 miles WSW 2.2 miles WSW 2.1 miles W

2.0 miles W 1.6 miles WNW 2.0 miles WNW

> 5.0 miles NW 3.7 miles NW 1.3 miles NNW 2.3 miles NNW There were no changes or additions to the REMP garden sampling locations as a result of the Garden Census.

Milk Animal Census Milk animals within five (5) miles were identified in the sixteen (16) geographical sectors surrounding CPS. Ten (10) locations were identified within this five (5) mile radius. Only milk animals were specifically identified for this report. Of the livestock identified, milk animals were being raised primarily for nursing [nursing of their calves] and were being used for meat production [for both their own use and sold commercially]. There were no residents that milked their animals for any human consumption. Other livestock raised in the area were identified, but will not be addressed within this report.

Changes in the census locations for the nearest livestock / dairy were identified in three (3) of the sixteen (16) geographical sectors and are indicated below:

2002 Census Location 2003 Census Location 1.3 miles NNE 2.3 miles ENE

> 5 miles ENE 4.1 miles ENE

> 5 miles NW 2.4 miles NW

- page 47 of 119--

No changes or additions to REMP milk sampling locations were made as a result of the Milk Animal Census.

-- page 48 of 119 --

U.3 LI L 7 Li U

U ITO

V. LIST OF REFERENCES

American National Standards Institute, Inc., "Performance, Testing and Procedural Specifications for Thermoluminescent Dosimetry," ANSI N545-1975.

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

CPS 2001 Annual Radioactive Effluent Release Report.

"Environmental Radioactivity," M. Eisenbud, 1987 (EI87).

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

Environmental Protection Agency. ORP/SID 72-1, June 1972.

Federal Radiation Council Report No. 1, "Background Material for the Development of Radiation Protection Standards," May 13, 1960.

International Commission on Radiological Protection, Publication 2, "Report of Committee 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).

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

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

"Radioactivity in the Environment: Sources, Distribution and Surveillance,"

Ronald L. Kathren, 1984.

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).

National Council on Radiation Protection and Measurements, Report No. 39, "Basic Radiation Protection Criteria," January 1971.

National Council on Radiation Protection and Measurements, Report No. 44, "Krypton-85 in the Atmosphere - Accumulation, Biological Significance, and Control Technology," July 1975.

National Council on Radiation Protection and Measurements, Report No. 91, "Recommendations on Limits for Exposure to Ionizing Radiation," June 1987.

National Council on Radiation Protection and Measurements, Report No. 93, "Ionizing Radiation Exposure of the Population of the United States,"

September 1987.

-- page 49 of 119 --

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

United States Nuclear Regulatory Commission, Regulatory Guide 4.1, "Programs for Monitoring Radioactivity in the Environs of Nuclear Power Plants," Revision 1, April 1975.

United States Nuclear Regulatory Commission, Regulatory Guide 4.13, "Performance, Testing and Procedural Specifications for Thermoluminescence Dosimetry: Environmental Applications," Revision 1, July 1977.

United States Nuclear Regulatory Commission, Regulatory Guide 1.109, "Calculation of Annual Dose to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10CFR Part 50, Appendix I," Revision 1, October 1977.

United States Nuclear Regulatory Commission Branch Technical Position, "An Acceptable Radiological Environmental Monitoring . Program," Revision 1, November 1979.

United States Nuclear. Regulatory..Commission , Regulatory Guide 4.15, "Quality Assurance for Radiological -Monitoring Programs (Norm Operations) -

Effluent Streams and the Environment," Revision 1, February 1979.

Technical Specification, Clinton Power Station, Unit No. 1, Docket No. 50-461, Office of Nuclear Reactor Regulation, 1986.

Clinton Power Station, Updated Safety Analysis Report.

Clinton Power Station, Unit 1, Off-Site Dose Calculation Manual.

-- page 50 of 119--

3 APPENbICES-IJ ri L}i

.43.

L3a . . , -

Environmental hc.

Mdw est Laboratory an NJbgheny Technoldoges Co.

700LandweItRd *Noatlhbmok.IL 6c42 (847 55440700 fax (847] 854-4517 APPENDIX A INTERLABORATORY COMPARISON PROGRAM RESULTS NOTE: Environmental Inc., Midwest Laboratory participates Inintercomparison studies administered by Environmental Resources Associates, and serves as a replacement for studies conducted previously by the U.S. EPA Environmental Monitoring Systems Laboratory, Las Vegas, Nevada. Results are reported in Appendix A. TLD Intercomparison results, in-house spikes, blanks, duplicates and mixed analyte performance evaluation program results are also reported. Appendix A Is updated four times a year; the complete Appendix is included in March, June, September and December monthly progress reports only.

January, 2003 through December, 2003

-- page 51 of 119 -

Appendix A Interlaboratorv Comparison Program Results Environmental, Inc., Midwest Laboratory, formerly Teledyne Brown Engineering Environmental Services Midwest Laboratory has participated in interlaboratory comparison (crosscheck) programs since the formulation of it's quality control program in December 1971. These programs are operated by agencies which supply environmental type samples containing concentrations of radionuclides known to the issuing agency but not to participant laboratories. The purpose of such a program is to provide an independent check on a laboratory's analytical procedures and to alert it of any possible problems.

Participant laboratories measure the concentration of specified radionuclides and report them to the issuing agency. Several months later, the agency reports the known values to the participant laboratories and specifies control limits. Results consistently higher or lower than the known values or outside the control limits indicate a need to check the instruments or procedures used.

Results in Table A-1 were obtained through participation in the environmental sample crosscheck program administered by Environmental Resources Associates, serving as a replacement for studies conducted previously by the U.S. EPA Environmental Monitoring Systems Laboratory, Las Vegas, Nevada.

The results in Table A-2 were obtained for Thermoluminescent Dosimeters (TLDs), via International Intercomparison of Environmental Dosimeters under the sponsorships listed in Table A-2. Results of internal laboratory testing is also listed.

Table A-3 lists results of the analyses on in-house 'spiked" samples for the past twelve months. All samples are prepared using NIST traceable sources. Data for previous years available upon request.

Table A-4 lists results of the analyses on in-house 'blank' samples for the past twelve months. Data for previous years available upon request. request.

Table A-5 list results of the in-house "duplicate' program for the past twelve months. Acceptance is based on the difference of the results being less than the sum of the errors. Data for previous years available upon request.

The results in Table A-6 were obtained through participation in the Mixed Analyte Performance Evaluation Program.

The results in Table A-7 were obtained through participation in the Environmental Measurement Laboratory Quality Assessment Program.

Attachment A lists acceptance criteria for 'spiked" samples.

Out-of-limit results are explained directly below the result.

Al

-- page 52 of 119 -

Attachment A W ACCEPTANCE CRITERIA FOR 'SPIKED' SAMPLES LABORATORY PRECISION: ONE STANDARD DEVIATION VALUES FOR VARIOUS ANALYSES 2 One standard deviation Analysis Level for single determination Gamma Emitters 5 to 100 pCi/liter or kg 5.0 pCifliter

> 100 pCi/liter or kg 5%of known value Strontium_89b 5 to 50 pCi/liter or kg 5.0 pCilliter

> 50 pCi/liter or kg 10% of known value Strontium-90b 2 to 30 pCilliter or kg 5.0 pCi/liter

> 30 pCi/liter or kg 10% of known value Potassium-40 > 0.1 g/liter or kg 5%of known value Gross alpha 20 pCiAiter 5.0 pCi/liter

> 20 pCi/liter 25% of known value Gross beta 100 pCiAiter 5.0 pCiAiter

> 100 pCVliter 5%of known value At Tritium 4,000 pCi/liter Is = (pCiAiter) =

169.85 x (known)0 0933

> 4,000 pCi/liter 10% of known value Radium-226,-228 0.1 pCi/liter 15% of known value

Plutonium 0.1 pCi/liter, gram, or sample 10% of known value lodine-131, 55 pCi/liter 6.0 pCi/liter Iodine-129b > 55 pCiAiter 10% of known value Uranium-238, 35 pCi/liter 6.0 pCi/liter Nickel-63b > 35 pCiAiter 15% of known value Technetium-99b Iron-55b 50 to 100 pCi/liter 10 pCi/liter

> 100 pCi/liter 10% of known value Othersb 20% of known value

' From EPA publication, Environmental Radioactivity Laboratory Intercomparison Studies Program, Fiscal Year, 1981-1982, EPA-600/4-81-004.

b Laboratory limit.

A2

-- page 53 of 119 --

TABLE A-1. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA)'.

Concentration (pCiIL)

Lab Code Date Analysis Laboratory ERA Control Resultb Resultc Limits STW-973 02/17/03 Sr-89 17.0 +/- 0.5 15.9 +/- 5.0 7.2 - 24.6 STW-973 02/17/03 Sr-90 8.9 I 0.3 9.0 +/- 5.0 0.4 - 17.7 STW-974 02/17/03 Ba-133 14.5

0.9 19.5 +/- 5.0 10.8 - 28.2 STW-974 02/17/03 Co-60 37.5 + 0.9 37.4 +/- 5.0 28.7 - 46.1 STW-974 02/17/03 Cs-134 18.2 +/- 0.6 17.8 + 5.0 9.1 - 26.5 STW-974 02/17/03 Cs-1 37 42.7 +/- 1.0 44.2 +/-5.0 35.5 - 52.9 STW-974 02/17/03 Zn-65 56.8 +/- 2.2 60.3 +/- 6.0 49.9 - 70.7 STW-975d 02/17/03 Gr. Alpha 18.4 +/-0.3 37.6 +/- 9.4 21.3 - 53.9 STW-975 02/17/03 Gr. Beta 11.7 +/- 0.5 8.6 +/- 5.0 0.0 - 17.2 STW-976 02/17/03 Ra-226 4.1 +/- 0.1 4.7 +/- 0.7 3.5 - 6.0 S1W-976 02/17/03 Ra-228 7.6 +/- 0.5 6.5 +/- 1.6 3.7 - 9.3 S1W-976 02/17/03 Uranium 52.9 +/- 1.9 53.7 +/- 5.4 44.4 - 63.0 S1W-983 05/19/03 H-3 1290.0 +/-25.0 1250.0 +/- 331.0 678.0 - 1820.0 STW-984 05/19/03 1-131 19.7 +/- 1.3 20.8 +/- 3.0 15.6 - 26.0 STW-985 05/19/03 Gr. Alpha 54.4 +/-3.0 70.3 i 17.6 39.9 - 101.0 STW-985 05/19/03 Ra-226 14.9 +/-0.2 16.5 +/-2.5 12.2 - 20.8 STW-985 05/19/03 Ra-228 13.1 +0.6 10.3 +/-2.6 5.8 - 14.8 STW-985 05/19/03 Uranium 14.5 +/- 0.4 15.1 +/-3.0 9.9 - 20.3 STW-986 05/19/03 Co-60 56.9 +/- 8.6 63.8 +/- 5.0 55.1 - 72.5 STW-986 e 05/19/03 Cs-I 34 61.6 +/-6.6 75.7 +/- 5.0 67.0 - 84.4 STW-986 05/19/03 Cs-1 37 143.0 +/- 1.2 150.0 i 7.5 137.0 - 163.0 STW-986 05/19/03 Gr. Beta 309.0 +/- 2.7 363.0 +/-54.5 269.0 - 457.0 STW-986 05/19/03 Sr-89 33.1 +/- 0.2 31.3 +/-5.0 22.6 - 40.0 STW-986 05/19/03 Sr-90 28.8 +/- 1.3 27.4 +/-5.0 18.7 - 36.1 STW-988 08/18/03 Ra-226 13.3 +/- 1.1 13.4 +/-2.0 9.9 - 16.9 STW-988 08/18/03 Ra-228 11.5 +/- 1.0 12.5 +/-3.1 7.1 - 17.9 STW-988 08/18/03 Uranium 12.3 +/- 0.4 11.4 +/-3.0 6.2 - 16.6 STW-989 08/18/03 Ba-133 18.1 +/- 1.9 20.7 +/-5.0 12.0 - 29.4 STW-989 08/18/03 Co-60 35.9 +/- 1.3 37.4 +/-5.0 28.7 - 46.1 STW-989 08/18/03 Cs-1 34 32.6 +/- 1.8 32.6 +/- 5.0 23.9 - 41.3 STW-989 08/18/03 Cs-1 37 48.3 +/-0.6 44.3 +/-5.0 35.6 - 53.0 STW-989 08/18/03 Zn-65 58.9 +/-2.1 60.2 +/- 6.0 49.8 - 70.6 STW-990 08/18/03 Gr. Alpha 41.8 +/-3.4 56.2 +/- 16.3 36.9 - 93.3 STW-990' 08/18/03 Gr. Beta 51.3 +/-3.0 31.6 5.0 22.9 - 40.3 STW-991 08/18/03 Sr-89 57.2 +/-4.3 58.8 +/- 5.0 50.1 - 67.5 STW-991 08/18/03 Sr-90 21.2 +/-0.9 20.6 +/- 5.0 11.9 - 29.3 A1-i

-- page 54 of 119 --

TABLE A-1. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA)".

Concentration (pCIL)

Lab Code Date Analysis Laboratory ERA Control Resultb Resultc Limits STW-997 11/18/03 Gr. Alpha 37.0 +/-2.0 29.5 +/-7.4 16.7 -42.3 STW-997 11/18/03 Gr. Beta 26.5 +/-0.8 26.3 +/-5.0 17.6 -35.0 STW-998 11/18/03 1-131 14.8 +/-0.3 16.5 +/-3.0 11.3 -21.7 STW-999 11/18/03 Ra-226 17.2 +/- 1.1 17.8 +/- 2.7 13.2 - 22.4 STW-999 11/18/03 Ra-228 6.6 +/- 0.3 6.8 +/- 1.7 3.8 - 9.7 STW-999 11/18/03 Uranium 11.7 +/-0.3 11.7 +/-3.0 6.5 -16.9 STW-1000 11/18/03 H-3 15900.0 +/- 174.0 14300.0 + 1430.0 11800.0 - 16800.0 STW-1001 11/18/03 Gr. Alpha 32.9 +/-0.3 54.2 +/-3.0 30.7 -77.7 STW-1001 11/18/03 Ra-226 16.5 +/-0.9 16.1 +/-2.4 11.9 -20.3 STW-1001 11/18/03 Ra-228 6.2 +/- 0.5 5.5 +/- 1.4 3.1 - 7.9 STW-1001 11/18/03 Uranium 9.7 +/- 1.5 9.3 +/- 13.6 4.1 - 14.5 STW-1002 11/18/03 Co-60 27.7 +/- 1.9 27.7 +/- 5.0 19.0 - 36.4 STW-1002 11/18/03 Cs-134 21.5 +/- 1.1 23.4 +/-5.0 17.6 -29.2 STW-1002 11/18/03 Cs-1 37 66.3 +/-2.8 64.2 +/- 5.0 55.5 - 72.9 STW-1002 11/18/03 Gr. Beta 159.0 +/-2.5 168.0 +/-5.0 124.0 -212.0 STW-1002 11/18/03 Sr-89 48.5 +/-0.4 50.4 +/-5.0 41.7 -59.1 STW-1002 11/18/03 Sr-90 10.1 +/-3.0 10.2 +/- 25.2 1.5 -18.9 Results obtained by Environmental, Inc., Midwest Laboratory as a participant Inthe environmental samples crosscheck program operated by Environmental Resources Associates (ERA).

b Unless otherwise Indicated, the laboratory result Isgiven as the mean +/- standard deviation for three determinations.

cResults are presented as the known values, expected laboratory precision (1sigma, I determination) and control limits as provided by ERA.

d Recount of the original sample still low. The ERA blank was spiked In the lab; known value of 20.1 pCUL, measured 21.5 +/- 1.1 pCi/L. No explanation for ERA test failure.

Lower bias observed for gamma spectroscopic analysis. The undiluted sample was reanalyzed; Results of reanalysis, Co-60: 62.3 pCi/L., Cs-134: 69.2 pCIUL., Cs-137: 152.3 pCVL.

'Reason for deviation unknown. A recount of the original planchets averaged 43.4 pCUL.

Cs-137activity by gamma spectroscopy-,28.3 pCilL. Result of reanalysis; 29.3 pCVL.

A1-2

-- page 55 of 119 --

TABLE A-2. Crosscheck program results; Thermoluminescent Dosimetry, (TLDs).

mR Lab Code TLD Type Date Known Lab Result Control Description Value +/- 2 sigma Limits Environmental. Inc.

2003-1 CaSO4: Dy Cards 8/8/2003 Reader 1,120 4.69 4.74 +/- 0.54 3.28 - 6.10 2003-1 CaSO4: Dy Cards 8/8/2003 Reader 1,150 3.00 3.02 +/- 0.20 2.10 - 3.90 2003-1 CaSO4: Dy Cards 8/8/2003 Reader 1,180 2.08 1.89 i 0.45 1.46 - 2.70 2003-1 CaSO4: Dy Cards 8/8/2003 Reader 1, 180 2.08 2.11 +0.22 1.46 - 2.70 2003-1 CaSO4: Dy Cards 8/8/2003 Reader 1,30 75.00 84.40 +/- 4.87 52.50 - 97.50 2003-1 CaSO4: Dy Cards 8/8/2003 Reader 1,60 18.75 19.11 + 1.86 13.13 - 24.38 2003-1 CaSO4: Dy Cards 8/8/2003 Reader 1, 60 18.75 22.82 i 5.41 13.13 - 24.38 2003-1 CaSO4: Dy Cards 8/8/2003 Reader 1,90 8.33 9.05 +/- 1.17 5.83 - 10.83 2003-1 CaSO4: Dy Cards 8/8/2003 Reader 1,90 8.33 7.60 +/- 1.08 5.83 - 10.83 Environmental. Inc.

2003-2 CaSO4: Dy Cards 1/12/2004 Reader 1, 30 61.96 73.50 +/- 2.58 43.37 - 80.55 2003-2 CaSO4: Dy Cards 1/12/2004 Reader 1,60 15.49 19.70 +/- 0.51 10.84 - 20.14 2003-2 CaSO4: Dy Cards 1/1212004 Reader 1,60 15.49 16.93 +/- 1.37 10.84 - 20.14 2003-2 CaSO4: Dy Cards 1/12t2004 Reader 1, 90 6.88 8.06 +/- 0.60 4.82 - 8.94 2003-2 CaSO4: Dy Cards 1/12/2004 Reader 1,90 6.88 6.64 +/- 0.58 4.82 - 8.94 2003-2 CaSO4: Dy Cards 1/12/2004 Reader 1,120 3.87 4.39 +/- 0.17 2.71 - 5.03 2003-2 CaSO4: Dy Cards 1/12/2004 Reader 1, 150 2.48 2.34 +/- 0.18 1.74 - 3.22 2003-2 CaSO4: Dy Cards 1/12t2004 Reader 1,150 2.48 2.51 +/- 0.16 1.74 - 3.22 2003-2 CaSO4: Dy Cards 1/12/2004 Reader 1, 180 1.72 2.01 +/- 0.13 1.20 - 2.24 A2-1 -- page 56 of 119 --

TABLE A-3. In-House "Spike" Samples Concentration (pCUL)a Lab Code Sample Date Analysis Laboratory results Known Control Type 2s, n=1 b Activity Limitsc SPW-356 water 1/2/2003 Sr-90 34.04 + 1.57 30.93 24.74 - 37.12 W-10303 water 1/3/2003 Gr. Beta 63.24 +/- 1.20 63.90 53.90 - 73.90 W-11303 water 1113/2003 Gr. Beta 59.75 i 1.10 63.90 53.90 - 73.90 W-12103 water 1/21/2003 Gr. Beta 61.56 + 1.59 63.99 53.99 - 73.99 SPAP-446 Air Filter 1/31/2003 Gr. Beta 1.49 +/-0.02 1.52 -8.48 - 11.52 SPW-468 water 1/31/2003 H-3 95982.00 +/- 865.00 89607.00 71685.60 - 107528.40 W-20703 water 2/7/2003 Fe-55 9095.00 i 114.00 10587.00 8469.60 - 12704.40 SPU-1 347 Urine 3/1/2003 H-3 1724.00 + 412.00 1784.33 1101.27 - 2467.39 DW-30303 water 3/3/2003 Gr. Beta 65.44 +/-0.59 63.90 53.90 - 73.90 SPCH-964 Charcoal 3/8/2003 1-131 (G) 73.37 +/-0.28 69.45 59.45 - 79.45 SPMI-1086 Milk 3/13/2003 Cs-137 57.18 +8.03 49.50 39.50 - 59.50 SPMI-1086 Milk 3/13/2003 1-131 75.13 +/- 12.01 67.60 54.08 - 81.12 SPMI-1086 Milk 3/13/2003 1-131(G) 65.81 +/-1.06 67.56 57.56 - 77.56 SPW-1088 water 3/13/2003 Co-60 27.16 i4.79 28.20 18.20 - 38.20 SPW-1088 water 3/13/2003 Cs-I 37 51.74 +/-9.15 49.50 39.50 - 59.50 SPW-1088 water 3/13/2003 1-131 (G) 68.14 + 12.92 67.60 57.60 - 77.60 SPW-1088 water 3/13/2003 1-131 76.94 i 1.13 67.56 54.05 - 81.07 SPVE-1110 Vegetation 3/14/2003 1-131 (G) 122.80 +/-16.80 124.00 111.60 - 136.40 SPW-1194 water 3/21/2003 Co-60 31.09 +/- 6.28 28.15 18.15 - 38.15 SPW-1194 water 3/21/2003 Cs-137 55.11 +/-0.13 49.50 39.50 - 59.50 SPW-1194 water 3/21/2003 1-131 (G) 66.17 +/- 9.15 67.60 57.60 - 77.60 W-32103 water 3/21/2003 C-14 5201.00 +/- 16.60 4966.00 2979.60 - 6952.40 SPCH-1429 Charcoal 4/1/2003 1-131 (G) 8.83 +/- 0.11 9.18 -0.82 - 19.18 W-40103 water 4/1/2003 Gr. Beta 67.74 +/- 0.52 63.39 53.39 - 73.39 SPF-1407 Fish 4/2/2003 Cs-134 0.58 +/-0.03 0.59 0.35 - 0.83 SPF-1407 Fish 4/2/2003 Cs-137 1.29 +/-0.06 1.32 0.79 - 1.85 SPAP-1409 Air Filter 4/2/2003 Gr. Beta 1.44 +/-0.02 1.51 -8.49 - 11.51 SPU-41203 Urine 4/12/2003 H-3 1798.50 +/-409.30 1784.33 1101.27 - 2467.39 SPU-41703 Urine 4/17/2003 H-3 1625.10 i401.30 1784.33 1101.27 - 2467.39 SPW-2022 water 4/25/2003 H-3 89007.00 +/-798.00 88463.00 70770.40 - 106155.60 SPW-2053 water 4/28/2003 Cs-137 45.70 +/-9.44 49.35 39.35 - 59.35 SPW-2053 water 4/28/2003 Sr-90 47.51 +/-1.87 44.47 35.58 - 53.36 SPMI-2055 Milk 4/28/2003 Cs-137 61.65 +/-7.17 65.80 55.80 - 75.80 SPMI-2055 Milk 4/28/2003 Sr-90 38.45 +/- 1.59 44.74 35.79 - 53.69 W-50603 water 5/6/2003 Gr. Beta 70.95 +/- 0.53 63.39 53.39 - 73.39 W-60303 water 6/3/2003 Gr. Beta 63.00 +/- 0.51 65.73 55.73 - 75.73 SPW-3960 water 7/15/2003 H-3 88700.00 +/- 822.00 87369.00 69895.20 - 104842.80 SPMI-4019 Milk 7/18/2003 Cs-137 47.17 +/- 7.22 49.11 39.11 - 59.11 SPMI-4019 Milk 7/18/2003 Sr-89 40.95 +/-4.88 49.49 39.49 - 59.49 SPMI-4019 Milk 7/18/2003 Sr-90 45.30 +/-1.73 44.24 35.39 - 53.09 SPW-4023 water 7/18/2003 Cs-137 51.92 +/-6.24 49.11 39.11 - 59.11 SPW-4023 water 7/18/2003 Sr-89 42.49 +/-10.23 49.49 39.49 - 59.49 SPW-4023 water 7/18/2003 Sr-90 49.69 +/- 3.04 44.24 35.39 - 53.09 SPW-4518 water 8/8/2003 Fe-55 8176.00 +/-107.00 9330.00 7464.00 - 11196.00 A3-1 -- page 57 of 119 --

TABLE A-3. In-House "Spike" Samples Concentration (pCVL)

Lab Code Sample Date Analysis Laboratory results Known Control Type 2s, n=1b Activity Limits' SPW-6197 water 10/16/2003 Tc-99 540.14 +54.00 539.73 377.81 -701.65 SPAP-3958 Air Filter 10/28/2003 Gr. Beta 1.45 +/- 0.02 1.50 -8.50 - 11.50 SPW-6401 water 10/28/2003 H-3 84867.00 +/- 826.00 85984.00 68787.20 - 103180.80 SPAP-6403 Air Filter 10/28/2003 Gr. Beta 1.71 +/- 0.02 1.49 -8.51 - 11.49 SPF-6418 Fish 10/28/2003 Cs-1 34 0.50 +/- 0.02 0.49 0.29 - 0.69 SPF-6418 Fish 10128/2003 Cs-137 1.37 +/- 0.05 1.30 0.78 - 1.82 SPW-6421 water 10/28/2003 Fe-55 104.18 +/- 1.26 88.18 68.18 - 108.18 SPMI-7459 Milk 12/12/2003 Cs-134 41.06 +/-2.45 41.88 31.88 -51.88 SPMI-7459 Milk 12/1212003 Cs-137 48.48 +/- 4.99 48.64 38.64 -58.64 SPMI-7459 Milk 12/12/2003 Sr-89 55.94 +/- 4.12 65.80 52.64 -78.96 SPMI-7459 Milk 12/12/2003 Sr-90 41.86 +/- 1.57 43.80 35.04 - 52.56 SPW-7461 water 12/1212003 Cs-1 34 44.07 +/- 1.49 41.88 31.88 - 51.88 SPW-7461 water 12/12/2003 Cs-137 50.26 +/- 2.67 48.64 38.64 - 58.64 SPW-7461 water 12/12/2003 Sr-89 56.41 +/- 4.87 65.80 52.64 -78.96 SPW-7461 water 12/12/2003 Sr-90 48.44 +/- 1.84 43.80 35.04 - 52.56 cControl limits are based on Attachment A, Page A2 of this report.

NOTE: For fish, Jello is used for the Spike matrix. For Vegetation, cabbage is used for the Spike matrix.

A3-2 -- page 58 of 119 --

TABLEA-4. In-House'Blank"Samples Concentration (pCVL)a Lab Code Sample Date Analysis Laboratory results (4.66o) Acceptance Type LLD Activityb Criteria (4.66 a)

SPW-357 water 1/2/2003 Sr-90 0.50 0.12 +/- 0.25 3 W-1 0303 water 1/3/2003 Gr. Beta 0.12 0.022 +/- 0.10 3.2 W-11303 water 1/13/2003 Gr. Beta 0.14 0.035 +/-0.10 3.2 W-12103 water 1/21/2003 Gr. Beta 0.12 0.029 +/- 0.09 3.2 SPAP-447 Air Filter 1/31/2003 Gr. Beta 0.00 -0.0034 +/- 0.00 3.2 SPW-469 water 1/31/2003 H-3 160.20 19.3 +/- 80.30 200 W-20103 water 2/1/2003 Gr. Beta 0.17 0.0 +/-0.12 3.2 W-20703 water 2/7/2003 Fe-55 802.00 149 +/-498.00 1000 DW-30303 3/3/2003 Gr. Beta 0.15 0.007 +/- 0.11 3.2 SPCH-965 Charcoal Cani: 3/8/2003 1-131 (G) 0.01 .9.6 SPMI-1087 Milk 3/13/2003 Cs-I 34 7.49 10 SPMI-1087 Milk 3/13/2003 Cs-137 7.90 10 SPMI-1087 Milk 3/13/2003 1-131 0.33 -0.013 +/- 0.18 0.5 SPMI-1087 Milk 3/13/2003 1-131(G) 7.76 20 SPW-1089 water 3/13/2003 Co-60 4.48 10 SPW-1089 water 3113/2003 Cs-134 5.60 10 SPW-1089 water 3/13/2003 Cs-137 4.32 10 SPW-1089 water 3/13/2003 1-131 0.29 -0.050 +/- 0.16 0.5 SPVE-1111 Vegetation 3/14/2003 1-131(G) 7.53 20 W-32103 water 3121/2003 C-14 17.50 -0.4 +/- 9.200 200 SPCH-1430 Charcoal Cani: 4/1/2003 1-131(G)* 0.01 9.6 W-40103 water 4/1/2003 Gr. Beta 0.14 -0.11 +/- 0.100 3.2 SPF-1408 Fish 4/2/2003 Cs-I 34 0.01 100 SPF-1408 Fish 4/2/2003 Cs-137 0.01 100 SPAP-1410 Air Filter 412/2003 Gr. Beta 0.00 -0.0029 +/- 0.002 3.2 SPU-41203 Urine 4/12/2003 H-3 653.99 542.28 +/- 364.780 200 SPU-41703 Urine 4/17/2003 H-3 648.35 100.1 +/- 344.800 200 SPW-2054 water 4/28/2003 Cs-1 37 3.16 10 SPW-2054 water 4/28/2003 Sr-89 0.55 0.45 +/- 0.50 5 SPW-2054 water 4/2812003 Sr-90 0.55 0.072 +/- 0.260 1 SPMI-2056 Milk 4/28/2003 Sr-90 0.77 0.66 +/- 0.430 SPMI-2056 Milk 4/28/2003 Cs-I 37 2.74 10 SPMI-2056 Milk 4/28/2003 1-131 (G) 3.54 20 W-50603 water 5/6/2003 Gr. Beta 0.12 0 +/- 0.090 3.2 W-60303 water 6/3/2003 Gr. Beta 0.14 -0.035 +/-0.095 3.2 SPW-3960 water 7/15/2003 H-3. 156.60 53.4 +/- 80.200 200 SPMI-4018 Milk 7/18/2003 Cs-i 37 4.10 10 SPMI-4018 Milk 7/18/2003 Sr-89 0.73 0.39 +/- 0.880 5 SPMI-4018 ' Milk 7/18/2003 Sr-90 0.51 0.93 +/- 0.340 1 SPW-4024 water 7/18/2003 Sr-89 0.83 0.21 +/- 0.730 5 SPW-4024 water 7/1812003 Sr-90 0.62 0.09 +/- 0.300 I SPW-4519 water 8/8/2003 Fe-55 527.00 87 +/- 369.000 1000 SPW-6401 water 10/28/2003 H-3 163.80 -23.8 +/- 85.000 200 A4-1 -- page 59of119--

TABLE A-4. In-House "Blank" Samples Concentration (pCYL)a Lab Code Sample Date Analysis Laboratory'results (4.66a) Acceptance Type LLD Activityb Criteria (4.66 a)

SPAP-6404 Air Filter 10/28/2003 Gr. Beta 0.87 -0.99 i 0.440 3.2 SPF-6419 Fish 10/28/2003 Cs-134 0.01 100 SPF-6419 Fish 10/2812003 Cs-137 0.01 100 SPMI-7460 Milk 12/12/2003 Cs-1 34 4.52 10 SPMI-7460 Milk 12/12/2003 Cs-137 5.77 10 SPMI-7460V Milk 12112/2003 Sr-90 0.50 1.26 +/- 0.370 1

' Liquid sample results are reported In pCiLliter, air filters( pC/filter), charcoal (pCilcharcoal canister), and solid samples (pCIkg).

b The activity reported is the net activity result.

c Low levels of Sr-90 are still detected In the environment. A concentration of (1-5 pCiL) in milk Isnot unusual.

A4-2 -- page 60 of 119 --

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)3 Averaged Lab Code Date Analysis First Result Second Result Result MI-24, 25 1/2/2003 K-40 1362.00 i 117.00 1377.00 +/- 188.00 1369.50 +/- 110.72 MI-24, 25 1/212003 Sr-90 1.45 i 0.40 2.21 +/- 0.50 1.83 +/- 0.32 CF-47,48 1/2/2003 Gr. Beta 2.72 i 0.10 2.84 +/- 0.10 2.78 +/- 0.07 CF-47,48 1/2/2003 K-40 2.61 +/-0.31 2.32 +/- 0.12 2.47 +/- 0.17 AP-8827, 8828 1/2/2003 Be-7 0.06 +/- 0.01 0.05 +/- 0.02 0.05 +/- 0.01 AP-8869, 8870 1/2/2003 Be-7 0.04 +/- 0.02 0.05 +/- 0.02 0.05 +/- 0.01 MI-119,120 1/8/2003 K-40 1351.90 +/- 116.10 1234.70 +/- 108.70 1293.30 +/- 79.52 MI-119,120 1/8/2003 Sr-90 2.22 +/- 0.43 1.88 +/- 0.40 2.05 +/- 0.30 MI-213, 214 1/14/2003 K-40 1372.30 +/- 104.80 1303.80 +/- 109.10 1338.05 +/- 75.64 MI-213, 214 1/14/2003 Sr-90 1.81 +/- 0.41 2.29 +/- 0.45 2.05 +/- 0.31 MI-262, 263 1/15/2003 K-40 1399.20 +/- 200.70 1347.70 +/- 126.40 1373.45 +/- 118.59 S-696, 697 1/29/2003 Gr. Alpha 24.70 +/- 4.89 23.23 +/- 4.64 23.97 +/- 3.37 S-696, 697 1/29/2003 Gr. Beta 22.89 +/- 2.67 22.71 +/- 2.73 22.80 +/- 1.91 MI-448,449 2/312003 K-40 1159.70 +/- 157.90 1396.40 +/- 106.20 1278.05 +/- 95.15 SW-470,471 2/3/2003 Gr. Beta 13.62 +/- 1.23 15.21 +/- 1.21 14.42 +/- 0.86 SW-470, 471 2/3/2003 K-40 (ICP) 5.10 +/- 0.51 5.20 +/- 0.52 5.15 +/- 0.36 SW-470, 471 2/3/2003 K-40 5.80 +/- 0.51 5.90 +/- 0.52 5.85 +/- 0.36 MI-517, 518 2/4/2003 K-40 1437.70 +/- 125.50 1357.70 +/- 188.00 1397.70 +/- 113.02 MI-541, 542 2/5/2003 K-40 1443.00 +/- 194.80 1385.20 +/- 190.10 1414.10 +/- 136.09 Ml-620, 621 2/11/2003 K-40 1294.70 +/- 115.10 1234.10 +/- 165.10 1264.40 +/- 100.63 DW-922, 923 3/4/2003 1-131 0.67 +/- 0.16 0.79 +/- 0.16 0.73 +/- 0.11 CF-1048, 1049 b 3/10/2003 K-40 3.09 +/- 0.12 2.67 +/- 0.07 2.88 +/- 0.07 LW-1152,1153 3/13/2003 H-3 1147.26 i 122.56 1094.42 +/- 120.92 1120.84 +/- 86.09 F-1120,1121 3/14/2003 Cs-1 37 0.04 i 0.02 0.05 +/- 0.01 0.05 +/- 0.01 F-1120,1121 3/14/2003 Gr. Beta 2.04 i 0.06 2.11 +/- 0.06 2.08 +/- 0.04 F-1120, 1121 3114/2003 K-40 1.93 i 0.38 1.89 +/- 0.25 1.91 +/- 0.23 DW-1278,1279 3/25/2003 1-131 0.37 i 0.22 0.34 +/- 0.29 0.36 +/- 0.18 SO-1380,1381 3/25/2003 Gr. Beta 18.60 +/- 2.68 20.53 +/- 2.83 19.57 +/- 1.95 LW-1299, 1300 3/27/2003 Gr. Beta 2.35 i 0.55 2.48 +/- 0.56 2.42 +/- 0.39 LW-1320,1321 3/27/2003 H-3 487.12 i 104.43 422.00 +/- 102.00 454.56 +/- 72.99 W-1403,1404 3/31/2003 Sr-90 0.96 i 0.32 1.10 +/- 0.42 1.03 +/- 0.26 AP-2019, 2020 3/31/2003 Be-7 0.07 i 0.01 0.08 +/- 0.01 0.07 +/- 0.01 MI-1422,1423 4/1/2003 K-40 1410.00 i 176.00 1340.00 +/- 114.00 1375.00 +/- 104.85 MI-2170, 2171 4/1/2003 K-40 1452.30 i 129.10 1472.50 +/- 191.00 1462.40 +/- 115.27 MI-1422,1423 4/212003 Sr-90 1.84 i 0.42 1.15 +/- 0.39 1.50 +/- 0.29 AP-1633,1634 4/2/2003 Be-7 0.05 i 0.01 0.06 +/- 0.01 0.06 +/- 0.01 AP-1871, 1872 4/2/2003 Be-7 0.07 +/- 0.01 0.07 +/- 0.01 0.07 +/- 0.01 AP-1974,1975 4/212003 Be-7 0.08 +/- 0.02 0.07 +/- 0.02 0.08 +/- 0.01 LW-1828,1829 4/11/2003 Gr. Beta 2.49 +/- 0.58 3.42 +/- 0.63 2.96 +/- 0.43 S-1544, 1545 4/15/2003 K-40 15.84 +/- 2.36 15.41 +/-2.02 15.63 +/- 1.55 DW-1913,1914 4/15/2003 1-131 0.29 +/- 0.21 0.42 +/- 0.19 0.36 +/- 0.14 MI-1996,1997 4/21/2003 Sr-90 2.05 +/- 0.74 3.25 +/- 0.91 2.65 +/- 0.58 MI-1996, 1997 4/22/2003 K-40 1580.20 +/- 118.90 1602.10 +/- 120.40 1591.15 +/- 84.61 A5-1 -- page 61 of 119 --

TABLE A-5. In-House "Duplicate" Samples Concentration (pCVL)a Averaged Lab Code Date Analysis First Result Second Result Result LW-2063, 2064 4/28/2003 Gr. Beta 2.33 +/- 0.66 2.68 +/- 0.60 2.51 +/- 0.45 SWU-2275, 2276 4/28/2003 Gr. Beta 3.62 i 0.67 4.60 +/- 0.71 4.11 +/- 0.49 G-2149, 2150 4/30/2003 Be-7 0.71 +/-0.19 0.69 +/- 0.20 0.70 +/- 0.14 TD-2339, 2340 5/1/2003 H-3 221.00 i91.00 161.00 +/- 88.00 191.00 +/- 63.29 SO-2381, 2382 5/1/2003 Cs-137 0.11 0.03 0.10 +/- 0.02 0.10 +/- 0.02 SO-2381, 2382 5/1/2003 Gr. Alpha 11.14 i 5.15 10.39 +/- 5.60 10.77 +/- 3.80 SO-2381, 2382 5/1/2003 Gr. Beta 35.18 +/-4.69 39.66 +/- 5.24 37.42 +/- 3.52 SO-2381, 2382 5/1/2003 K-40 18.29 +/- 0.84 17.83 +/- 0.84 18.06 +/- 0.59 SO-2381, 2382 511/2003 Sr-90 0.06 +/- 0.02 0.10 +/- 0.02 0.08 +/- 0.01 DW-2317, 2318 516/2003 1-131 1.77 +/- 0.27 1.47 +/- 0.26 1.62 +/- 0.19 BS-2595, 2596 516/2003 Cs-1 37 0.06 +/- 0.02 0.06 +/- 0.02 0.06 +/- 0.02 BS-2595, 2596 5/6/2003 K-40 13.74 i 0.62 14.10 +/- 0.73 13.92 + 0.48 U-2484, 2485 5/9/2003 H-3 512.00 i 100.00 370.00 +/- 95.00 441.00 +/- 68.97 SO-2645, 2646 5/14/2003 Be-7 1.18 i0.42 1.21 +/- 0.35 1.19 +/- 0.27 SO-2645, 2646 5114/2003 Cs-1 37 0.11 +/-0.04 0.09 +/- 0.05 0.10 +/- 0.03 SO-2645, 2646 5/14/2003 K-40 16.50 +/- 1.13 15.33 +/- 1.09 15.91 +/- 0.79 MI-2696, 2697 5/19/2003 K-40 1320.40 +/- 124.50 1394.10 +/- 113.00 1357.25 +/- 84.07 MI-2696, 2697 5119/2003 Sr-90 1.49 0.47 2.01 +/-0.45 1.75 +/- 0.32 SO-2787. 2788 5/28/2003 Cs-1 37 0.27 +/- 0.04 0.23 +/- 0.04 0.25 +/- 0.03 SO-2787, 2788 5/28/2003 Gr. Beta 19.62 +/- 1.73 20.81 +/- 1.72 20.21 +/- 1.22 SO-2787, 2788 5/28/2003 K-40 i4.77 1.02 14.41 +/- 1.00 14.59 +/- 0.71 MI-2840, 2841 5/2812003 K-40 1179.50 i 167.80 1401.70 +/- 120.20 1290.60 +/- 103.20 SWU-2864, 2865 5128/2003 Gr. Beta 3.39 +/- 0.59 3.41 i 0.64 3.40 +/- 0.43 BS-2888, 2889 5/29/2003 Cs-137 0.05 +/- 0.02 0.07 i 0.04 0.06 +/- 0.02 BS-2888, 2889 5129/2003 K-40 9.70 +/- 0.83 10.17 +/- 0.87 9.93 +/- 0.60 W-3230, 3231 5/3012003 Gr. Beta 4.33 +/- 1.00 3.28 +/- 1.22 3.81 +/- 0.79 TD-3036, 3037 6/2/2003 H-3 529.50 +/- 100.00 585.50 +/- 102.00 557.50 +/- 71.42 SL-2909, 2910 b 613/2003 Gr. Beta 7.10 +/- 0.15 7.60 +/- 0.16 7.35 +/- 0.11 SL-2909, 2910 6/3/2003 K-40 3.90 +/- 0.67 3.49 +/- 0.52 3.70 +/- 0.42 SW-3080, 3081 6/10/2003 Gr. Alpha 4.63 +/- 1.90 4.47 +/- 1.71 4.55 +/- 1.28 SW-3080, 3081 6/10/2003 Gr. Beta 9.07 +/- 1.29 8.98 i 1.28 9.02 +/- 0.91 VE-3172, 3173 6/11/2003 K-40 2.62 i 0.35 3.17 i 0.58 2.90 +/- 0.34 F-3742, 3743 6/11/2003 Gr. Beta 3.47 +/-0.13 3.71 i0.14 3.59 +/- 0.10 F-3742, 3743 6111/2003 K-40 2.94 i 0.39 2.70 +/- 0.40 2.82 +/- 0.28 SO-3325, 3326 6/13/2003 Gr. Beta 20.95 +/- 1.88 19.97 i 2.01 20.46 +/- 1.38 MI-3253, 3254 6117/2003 K-40 1329.40 +/- 121.80 1417.60 +/- 130.90 1373.50 +/- 89.40 MI-3297, 3298 6/17/2003 Sr-90 2.14 i 0.57 2.27 i 0.50 2.21 +/- 0.38 WW-3380, 3381 6/23/2003 Gr. Beta 5.58 i 0.69 5.03 i 0.69 5.31 +/- 0.49 SWT-3403, 3404 6/24/2003 Gr. Beta 2.80 +/- 0.56 2.63 i 0.55 2.72 +/- 0.39 MI-3424, 3425 6/24/2003 K-40 1422.80 +/- 185.40 1216.20 +/- 170.10 1319.50 +/- 125.80 SW-3862, 3863 6/24/2003 Gr. Beta 3.66 +/- 1.18 3.70 i 1.22 3.68 +/- 0.85 G-3479,3480 612512003 Be-7 1.52 i 0.25 1.43 +/- 0.28 1.47 +/- 0.19 G-3479, 3480 6/25/2003 K-40 5.02 +/-0.45 5.10 i 0.48 5.06 +/- 0.33 LW-3809, 3810 6/30/2003 Gr. Beta 2.12 i 0.76 2.39 i 0.72 2.25 +/- 0.52 A5-2 -- page 62 of 119 --

TABLE A-5. In-House 'Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result LW-3809,3810 6/30/2003 H-3 2814.09 +/- 167.99 2812.17 +/- 167.94 2813.13 +/-118.77 AP-4105, 4106 6/30/2003 Be-7 0.07 +/- 0.01 0.07 +/- 0.01 0.07 +/- 0.01 G-3572, 3573 7/1/2003 Be-7 0.91 +/- 0.24 0.81 +/- 0.28 0.86 +/- 0.18 G-3572, 3573 7/1/2003 Gr. Beta 6.35 +/- 0.15 6.35 +/- 0.15 6.35 +/- 0.11 G-3572, 3573 7/1/2003 K-40 5.44 +/- 0.55 5.68 +/- 0.28 5.56 +/- 0.31 G-3572, 3573 7/1/2003 Sr-90 0.01 +/- 0.00 0.02 +/- 0.00 0.01 +/-0.00 MI-3601, 3602 7/1/2003 K-40 1318.60 i 117.40 1435.10 +/- 117.80 1376.85 +/- 83.16 MI-3601, 3602 7/11/2003 Sr-90 0.86 +/- 0.51 1.74 +/- 0.60 1.30 +/- 0.39 AP-3933, 3934 7/1/2003 Be-7 0.07 +/- 0.01 0.07 +/- 0.01 0.07 +/- 0.01 AP-4061, 4062 7/2/2003 Be-7 0.07 +/- 0.01 0.08 +/- 0.01 0.08 +/- 0.01 AP-4147, 4148 7/2/2003 Be-7 0.08 +/- 0.01 0.07 +/- 0.01 0.07 +/- 0.01 AP-4084,4085 7/3/2003 Be-7 0.09 +/- 0.02 0.08 +/- 0.02 0.08 +/- 0.01 LW-3786, 3787 7/9/2003 Gr. Beta 2.13 +/- 0.56 2.93 +/- 0.62 2.53 +/- 0.42 WW-4168,4169 7/111/2003 Gr. Beta 3.79 +/- 1.87 4.48 +/- 1.98 4.14 +/- 1.36 CF-3975, 3976 7/14/2003 Be-7 1.64 +/-0.81 1.66 +/- 0.57 1.65 +/- 0.50 CF-3975, 3976 7/14/2003 K-40 6.54 +/- 0.75 6.19 +/- 0.50 6.36 +/- 0.45 MI-4020, 4021 7/16/2003 K-40 1350.90 +/- 174.90 1199.80 +/- 153.20 1275.35 +/- 116.25 DW-4272, 4273 7/29/2003 Gr. Beta 2.35 +/- 0.92 2.29 +/- 0.89 2.32 +/- 0.64 SWU-4461, 4462 7/30/2003 Gr. Beta 2.28 +/- 0.44 1.93 +/- 0.43 2.10 +/- 0.31 SL-4398, 4399 8/4/2003 Be-7 4.55 +/- 1.05 4.50 +/- 1.10 4.53 i 0.76 SL-4398,4399 b 8/4/2003 Gr. Beta 3.41 +/- 0.12 3.12 +/- 0.11 3.27 +/- 0.08 SL-4398,4399 8/4/2003 K-40 2.47 +/- 0.67 2.44 +/- 0.87 2.46 +/- 0.55 G-4419,4420 8/4/2003 Be-7 3.98 +/- 0.63 3.93 +/- 0.57 3.96 +/- 0.42 G-4419,4420 8/4/2003 Gr. Beta 5.38 +/- 0.14 5.35 +/- 0.16 5.37 +/- 0.11 G4419,4420 8/4/2003 K-40 4.42 +/- 0.66 4.32 +/- 0.74 4.37 +/- 0.50 TD-4550, 4551 814/2003 H-3 327.30 +/- 95.10 390.20 +/- 92.10 358.75 +/- 66.19 Ml-4482,4483 8/612003 K-40 1301.40 +/- 115.20 1370.30 +/- 116.80 1335.85 +/- 82.03 MI-4482,4483 8/6/2003 Sr-90 0.81 +/- 0.30 0.85 +/- 0.31 0.83 +/- 0.21 G-4526,4527 8/6/2003 Be-7 1.47 +/- 0.29 1.42 +/- 0.28 1.45 +/- 0.20 G-4526,4527 8/6/2003 K-40 5.42 +/- 0.56 5.21 +/- 0.63 5.31 +/-0.42 SWU-4609,4610 816/2003 Gr. Beta 3.22 +/- 0.63 2.67 i 0.64 2.95 +/- 0.45 CW-4694,4695 8/6/2003 Gr. Beta 1.48 +/- 0.34 1.09 +/- 0.34 1.29 +/- 0.24 CW-4694,4695 8/6/2003 H-3 22776A1 +/- 428.73 21831.75 i420.10 22304.08 +/- 300.12 LW-4673,4674 8/13/2003 Gr. Beta 2.86 +/- 0.65 3.75 i0.71 3.30 +/- 0.48 MI-4735,4736 8/19/2003 K-40 1396.30 +/- 127.90 1410.10 +/- 120.20 1403.20 +/- 87.76 MI-4756,4757 8/19/2003 Sr-90 1.66 +/- 0.47 1.53 i 0.44 1.60 +/- 0.32 VE-4832,4833 8/20/2003 K-40 1.96 +/- 0.50 1.43 +/- 0.47 1.70 +/- 0.34 Ml-4860,4861 8/26/2003 K-40 1312.10 +/- 191.80 1307.80 +/- 109.30 1309.95 +/- 110.38 SO-5082, 5083 8/28/2003 Cs-1 37 0.01 +/- 0.00 0.01 iO0.00 0.01 +/- 0.00 S0-5082, 5083 8/28/2003 Gr. Beta 20.02 +/- 1.84 20.92 +/- 2.03 20.47 +/- 1.37 CW-5349, 5350 8/31/2003 Gr. Beta 1.45 +/- 0.39 1.55 +/- 0.45 1.50 +/- 0.30 CW-5349, 5350 8/31/2003 H-3 24429.50 +/- 444.42 24744.25 +/- 447.18 24586.88 +/- 315.23 ME-4968,4969 9/2/2003 Gr. Beta 4.90 +/- 0.23 5.18 +/- 0.24 5.04 +/- 0.17 ME-4968,4969 9/2/2003 K-40 2.46 +/- 0.41 2.68 +/- 0.37 2.57 +/- 0.28 A5-3 -- page 63 of 119 --

TABLE A-5. In-House "Duplicate" Samples Concentration (pCVL) 3 Averaged Lab Code Date Analysis First Result Second Result Result DW-4989, 4990 9/2/2003 Gr. Beta 2.20 +/- 1.04 3.19 f 1.14 2.70 +/- 0.77 MI-5154, 5155 9/8/2003 K-40 1365.50 +/- 116.70 1456.70 +/- 119.10 1411.10 +/- 83.37 MI-5154, 5155 9/8/2003 Sr-90 1.19'+/- 0.39 1.39 f 0.39 1.29 +/- 0.28 AP-6177, 6178 9/29/2003 Be-7 0.07 +/- 0.01 0.06 +/- 0.01 0.06 +/- 0.01 SWU-5773, 5774 9/30/2003 Gr. Beta 2.55 +/- 0.63 2.83 i 0.60 2.69 +/- 0.44 AP-6102, 6103 9/30/2003 Be-7 0.07 +/- 0.01 0.05 i 0.01 0.06 +/- 0.01 G-5631, 5632 10/11/2003 Be-7 1.88 +/- 0.48 2.21 +/- 0.40 2.05 +/-0.31 G-5631, 5632 10/1/2003 Gr. Beta 5.87 +/- 0.09 5.85

0.08 5.86 +/- 0.06 G-5631, 5632 10/1/2003 K-40 5.24 +/- 0.77 5.26 i 0.58 5.25 +/- 0.48 SO-5660. 5661 10/1/2003 Cs-1 37 0.15 +/- 0.04 0.16 +/- 0.05 0.16 +/- 0.03 S0-5660, 5661 10/1/2003 Gr. Alpha 12.72 +/- 3.72 14.86 i 3.88 13.79 +/- 2.69 SO-5660, 5661 10/1/2003 Gr. Beta 32.42-+/- 3.09 33.60 +/- 3.04 33.01 +/- 2.17 S0-5660, 5661 10/112003 K-40 18.93 +/- 0.87 18.25 +/- 1.19 18.59 +/- 0.74 SO-5660, 5661 10/1/2003 Sr-90 0.03 +/- 0.01 0.03 +/- 0.01 0.03 +/- 0.01 AP-6334, 6335 10/1/2003 Be-7 0.06 +/- 0.01 0.06 +/- 0.01 0.06 +/- 0.01 AP-6363, 6364 10/2/2003 Be-7 0.07 +/- 0.02 0.07 i 0.02 0.07 +/- 0.01 MI-5794, 5795 10/6/2003 Sr-90 1.37 i0.37 1.02 +/- 0.37 1.19 +/- 0.26 MI-5838, 5839 10/8/2003 K-40 1364.30 i 124.10 1414.40 +/- 110.40 1389.35 +/- 83.05 MI-5838, 5839 10/8/2003 Sr-90 0.76 i 0.30 1.00 +/- 0.34 0.88 +/- 0.23 BS-5938, 5939 10/8/2003 Cs-I 37 0.18 i 0.03 0.20 +/- 0.05 0.19 +/- 0.03 BS-5938, 5939 10/8/2003 K-40 15.59 i 0.70 16.69 +/- 0.80 16.14 +/- 0.53 SS-5959, 5960 10/13/2003 K-40 -7.49 i 0.42 7.29 +/- 0.63 7.39 +/- 0.38 MI-6011, 6012 10/13/2003 K-40 1165.20 i 118.70 1191.20 +/- 99.50 1178.20 +/- 77.44 MI-6034, 6035 10/14/2003 Sr-90 0.86 i 0.33 0.90 +/- 0.34 0.88 +/- 0.24 VE-6055, 6056 10/15/2003 Gr. Beta 5.18 +/-0.18 5.33 +/- 0.18 5.25 +/- 0.13 VE-6055, 6056 10/15/2003 K-40 5.31 i0.57 4.52 +/- 0.51 4.92 +/- 0.38 MI-6291, 6292 10/21/2003 K-40 1935.60 +/- 147.70 1936.10 +/- 116.50 1935.85 +/- 94.06 MI-6291, 6292 10/21/2003 Sr-90 1.22 +/- 0.39 1.41 +/-0.37 1.31 +/- 0.27 SS-6435, 6436 10/21/2003 Cs-I 37 0.05 +/- 0.02 0.05 +/- 0.03 0.05 +/- 0.02 SS-6435, 6436 10/21/2003 K-40 14.08 +/- 0.54 .14.28 i 0.80 14.18 +/- 0.48 CF-6313, 6314 10/22/2003 K-40 14.56 +/- 0.45 14.70 i 0.95 14.63 +/- 0.53 SO-6528, 6529 10/22/2003 Cs-137 0.15 +/- 0.03 0.16 +/- 0.05 0.16 +/- 0.03 S0-6528, 6529 10/22/2003 K-40 17.46 +/- 0.69 17.90 +/- 1.05 17.68 +/- 0.63 S0-6393, 6394 10/25/2003 Cs-137 0.09 +/- 0.03 0.10 +/- 0.04 0.10 +/- 0.03 S0-6393, 6394 10/25/2003 Gr. Beta 23.21 +/- 1.98 21.76 +/- 1.91 22.48 +/- 1.38 S0-6393, 6394 10/25/2003 K-40 13.98 +/- 0.80 14.57 +/- 0.86 14.27 +/- 0.59 SWT-6507, 6508 10/28/2003 Gr. Beta 2.64 +/- 0.52 2.63 +/- 0.53 2.63 +/- 0.37 DW-6647, 6648 10/31/2003 1-131 0.46 +/- 0.27 0.61 +/-0.31 0.53 +/- 0.21 BS-6603, 6604 11/3/2003 Cs-I 37 9.03 +/- 0.82 8.60 +/- 1.13 8.82 +/- 0.70 BS-6603, 6604 11/3/2003 Gr. Beta 26.83 +/- 1.94 27.18 i 1.95 27.01 +/- 1.38 SO-6670, 6671 11/5/2003 Cs-137 0.15 +/- 0.04 0.13 +/- 0.04 0.14 +/- 0.03 S0-6670, 6671 11/5/2003 K-40 12.96 +/- 0.66 12.95 i 0.72 12.96 +/- 0.49 S-7067, 7068 11/10/2003 Cs-137 0.21 +/- 0.05 0.19 +/- 0.08 0.20 +/- 0.05 MI-6818, 6819 11/11/2003 K-40 1695.50 +/- 129.80 1709.40 +/- 143.00 1702.45 +/- 96.56 A5-4 -- page 64of119--

TABLE A-5. In-House 'Duplicate" Samples Concentration (pCiL)a Averaged Lab Code Date Analysis First Result Second Result Result MI-6818, 6819 11/11/2003 Sr-90 2.01 +/- 0.41 1.59 i 0.39 1.80 +/- 0.28 WL-6987, 6988 11/17/2003 Fe-55 603.49 +/- 53.32 619.65 +/-53.97 611.57 +/- 37.93 SO-7156, 7157 11/21/2003 Cs-137 0.74 +/- 0.08 0.77 +/- 0.07 0.76 +/- 0.06 SO-7156, 7157 11/21/2003 Gr. Alpha 14.90 +/-4.24 19.25 i 4.45 17.07 +/- 3.07 SO-7156, 7157 11/21/2003 Gr. Beta 22.97 +/- 3.12 25.51 +/- 2.98 24.24 +/- 2.16 S0-7156, 7157 11/21/2003 K-40 12.51 +/- 1.06 12.94 +/- 1.07 12.73 +/- 0.75 S-7281, 7282 11/24/2003 Cs-1 37 0.82 +/- 0.15 1.16 +/- 0.20 0.99 +/- 0.12 SWU-7198, 7199 11/25/2003 Gr. Beta 2.60 +/- 0.53 2.54 +/- 0.55 2.57 +/- 0.38 DW-7221, 7222 11/25/2003 Gr. Beta 12.32 i 1.40 12.38 i 1.43 12.35 +/- 1.00 SW-7133, 7134 12/1/2003 Gr. Beta .2.10 +/- 0.23 2.46 0.23 2.28 +/- 0.16 SW-7133, 7134 12/1/2003 K-40 1.50 +/- 0.15 1.40 +/- 0.14 1.45 +/- 0.10 W-7519, 7520 12/1/2003 Fe-55 3.03 +/- 0.65 3.12 i 0.64 3.08 +/- 0.46 SW-7805, 7806 12/1/2003 Sr-90 0.59 +/- 0.32 0.56 i 0.33 0.58 +/- 0.23 VE-7399, 7400 12/9/2003 Gr. Beta 4.99 +/- 0.15 5.24 +/- 0.15 5.11 +/- 0.11 VE-7399, 7400 12/9/2003 K-40 5.04 +/- 0.46 5.34 +/- 0.74 5.19 +/- 0.43 SW-7540, 7541 12/9/2003 Gr. Alpha 2.64 +/- 1.36 2.10 +/- 1.19 2.37 +/- 0.91 SW-7540, 7541 12/9/2003 Gr. Beta 6.62 +/- 1.22 5.89 +/- 1.35 6.25 +/- 0.91 LW-7736, 7737 12/26/2003 Gr. Beta 2.62 +/- 0.54 2.83 +/- 0.56 2.73 +/- 0.39 AP-7868, 7869 12/3012003 Be-7 0.05 +/- 0.01 0.04 i 0.01 0.04 +/- 0.01 AP-7952, 7953 12/30/2003 Be-7 0.04 +/- 0.01 0.04 +/- 0.01 0.04 +/- 0.01 AP-7994, 7995 12/31/2003 Be-7 0.05 +/- 0.02 0.05 + 0.01 0.05 +/- 0.01 Note: Duplicate analyses are performed on every twentieth sample received in-house. Results are not listed for those analyses with activities that measure below the LLD.

a Results are reported in units of pCi/L, except for air filters (pCi/Filter), food products, vegetation, soil, sediment (pCi/g).

b 200 minute count time or longer, resulting In lower error.

A5-5 -- page 65 of 119 --

TABLE A-6. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP)a.

Concentrationt Known Control Lab Code Type Date Analysis Laboratory result Activity Limitsc STW-972 water 12101/02 Am-241 0.56 i 0.06 0.58 +/- 0.09 0.40 - 0.75 STW-972 water 12/01/02 Co-57 57.10 +/- 1.90 57.00 +/- 5.70 39.90 - 74.10 STW-972 water 12101/02 Co-60 38.30 +/-0.60 38.20 +/-3.82 26.74 -49.66 STW-972 water 12/01/02 Cs-134 395.30 +/- 10.10 421.00 +/- 42.10 294.70 - 547.30 STW-972 water 12/01/02 Cs-137 316.40 +/- 5.30 329.00 +/- 32.90 230.30 -427.70 STW-972 water 12/01/02 Fe-55 94.90 +/- 24.50 96.00 +/- 9.60 67.20 - 124.80 STW-972 water 12/01/02 Mn-54 33.40 +/- 0.10 32.90 +/- 3.29 23.03 - 42.77 STW-972 water 12/01/02 Ni-63 123.80 +/- 5.50 136.50 +/- 13.70 95.55 - 177.45 STW-972 water 12/01/02 Pu-238 0.66 +/- 0.06 0.83 +/- 0.08 0.58 - 1.08 STW-972 water 12/01/02 Pu-239/40 0.001 +/- 0.001 0.000 +/- 0.000 0.000 - 0.005 STW-972 water 12/01/02 Sr-90 13.80 +/- 1.00 12.31 +/- 1.23 8.62 - 16.00 STW-972 water 12/01/02 Tc-99 128.10 +/- 3.80 132.00 +/- 13.20 92.40 - 171.60 STW-972 water 12/01/02 U-233/4 1.60+/- 0.09 1.54 i0.15 1.08 -2.00 STW-972 water 12/01/02 U-238 1.64 +/- 0.09 1.60 i0.16 1.12 -2.08 STW-972 water 12/01/02 Zn-65 540.40 +/- 9.90 516.00 +/-51.60 361.20 - 670.80 STSO-987 soil 01/01/03 Co-57 534.36 +/- 2.61 530.00 +/- 53.00 371.00 - 689.00 STSO-987 soil 01/01/03 Co-60 442.16 i2.31 420.00 +/- 42.00 294.00 -546.00 STSO-987 soil 01/01/03 Cs-134 211.00 i2.30 238.00 +/- 23.80 166.60 -309.40 STSO-987 soil 01/01/03 Cs-1 37 849.50 i 3.30 832.00 +/- 83.20 582.40 - 1081.60 STSO-987 soil 01/01/03 K-40 716.50 i 12.80 652.00 +/- 65.20 456.40 - 847.60 STSO-987 soil 01/01/03 Mn-54 148.76 i 2.84 137.00 +/- 13.70 95.90 - 178.10 STSO-987 soil 01/01/03 Ni-63 597.10 +/- 23.50 770.00 +/- 77.00 539.00 - 1001.00 STSO-987 soil 01/01/03 Pu-238 67.05 i 3.10 66.90 i 6.70 46.83 - 86.97 STSO-987 soil 01/01/03 Pu-239/40 52.80 i 3.60 52.70 +/- 5.30 36.90 - 68.50 STSO-987 soil 01/01/03 Sr-90 609.50 i 9.80 714.00 +/- 71.40 499.80 - 928.20 STSO-987 soil 01/01/03 U-233/4 99.50 7.60 89.00 +/- 8.90 62.30-115.70 STSO-987 soil 01/01/03 U-238 508.60 i42.20 421.00 +/-42.10 294.70 - 547.30 STSO-987 soil 01/01/03 Zn-65 492.70 i28.10 490.00 +/- 49.00 343.00 - 637.00 a Results obtained by Environmental, Inc. ,Midwest Laboratory as a participant in the Department of Energy's Mixed Analyte Performance Evaluation Program, Idaho Operations office, Idaho Falls, Idaho bAll results are In Bq/kg or Bq/L as requested by the Department of Energy.

' MAPEP results are presented as the known values and expected laboratory precision (1 sigma, I determination) and control limits as defined by the MAPEP.

A6-1 -- page 66 of 119 --

TABLE A-7. Environmental Measurements Laboratory Quality Assessment Program (EML)

Concentration" EML Control Lab Code Type Date Analysis Laboratory results Result" Limits' STW-977 water 03/01/03 Gr. Alpha 304.30 +/- 53.10 377.50 0.58 - 1.29 STW-977 water 03/01/03 Gr. Beta 615.80 +/- 14.70 627.50 0.61 - 1.43 STW-978 water 03/01/03 Am-241 2.00 +/- 0.10 2.13 0.79 - 1.41 STW-978 water 03/01/03 Co-60 221.30 +/- 1.20 234.00 0.80 - 1.20 STW-978 a water 03/01/03 Cs-134 23.30 +/- 1.10 30.50 0.80 - 1.30 STW-978 water 03/01/03. Cs-137 61.40 +/- 0.60 63.80 0.80 - 1.22 STW-978 e water 03/01/03 H-3 341.90 +/- 22.70 390.00 0.78 - 2.45 STW-978 water 03/01/03 Pu-238 3.70 +/- 0.20 3.33 0.74 - 1.20 STW-978 water 03/01/03 Pu-239/40 4.40 +/- 0.10 3.92 0.79 - 1.20 STW-978 water 03/01/03 Sr-90 4.60 +/- 0.30 4.34 0.69 - 1.34 STW-978 water 03/01/03 Uranium 5.10 +/- 0.60 4.29 0.75 - 1.33 STSO-979 soil 03/01/03 Ac-228 55.60 +/- 2.50 57.60 0.80 - 1.38 STSO-979 soil 03/01/03 Am-241 12.42 +/- 0.90 15.60 0.65 - 2.28 STSO-979 soil 03/01/03 Bi-212 57.70 +/- 3.20 60.60 0.50 - 1.34 STSO-979 soil 03/01/03 Bi-214 60.40 +/- 3.20 67.00 0.78 - 1.42 STSO-979 soil 03/01/03 Cs-137 1416.80 +/- 70.00 1450.00 0.80 - 1.25 STSO-979 soil 03/01/03 K-40 653.80 +/- 11.90 636.00 0.80 - 1.32 STSO-979 soil 03/01/03 Pb-212 51.10 +/- 5.20 57.90 0.78 - 1.32 STSO-979 soil 03/01/03 Pb-214 64.70 +/- 5.10 71.10 0.76 - 1.46 STSO-979 soil 03/01/03 Pu-239/40 24.40 +/- 0.30 23.40 0.71 - 1.30 STSO-979 soil 03/01/03 Sr-90 54.50 +/- 2.60 64.40 0.67 - 2.90 STSO-979 soil 03/01/03 Uranium 245.00 +/- 1.50 249.00 0.71 - 1.32 STVE-980 Vegetation 03/01/03 Am-241 3.10 +/- 0.20 3.51 0.73 - 2.02 STVE-980 Vegetation 03/01/03 Cm-244 1.40 +/- 0.50 2.01 0.61 - 1.59 STVE-980 Vegetation 03/01/03 Co-60 12.60 +/- 0.40 12.10 0.80 - 1.44 STVE-980 Vegetation 03/01/03 Cs-137 449.70 +/- 6.20 444.00 0.80 - 1.31 STVE-980 Vegetation 03/01/03 K.40 1159.00 +/-38.60 1120.00 0.79 -1.39 STVE-980 Vegetation 03/01/03 Pu-239/40 4.80 +/- 0.40 5.17 0.69 - 1.31 STVE-980 Vegetation 03/01/03 Sr-90 659.70 +/- 50.40 650.00 0.55 - 1.21 STAP-981 Air Filter 03/01/03 Am-241 0.27 +/- 0.10 0.34 0.70 - 2.34 STAP-981 Air Filter 03/01/03 Co-60 30.20 +/- 0.30 33.50 0.80 - 1.26 STAP-981 Air Filter 03/01/03 Cs-1 37 90.30 +/- 1.30 99.70 0.80 - 1.32 STAP-981 Air Filter 03/01/03 Mn-54 41.80 +/- 0.60 43.80 0.80 - 1.35 STAP-981 Air Filter 03/01/03 Pu-238 0.52 +/- 0.10 0.52 0.67 -1.33 STAP-981 Air Filter 03/01/03 Pu-239/40 0.35 +/- 0.10 0.33 0.73 - 1.26 STAP-981 Air Filter 03/01/03 Sr-90 2.50 +/- 0.10 2.80 0.53 - 1.84 STAP-981 Air Filter 03/01/03 Uranium 0.51 +/- 0.10 0.50 0.79 - 2.10 STAP-982 Air Filter 03/01/03 Gr. Alpha 0.90 +/- 0.10 1.17 0.73 - 1.43 STAP-982 Air Filter 03/01/03 Gr. Beta 1.50 +/- 0.10 1.50 0.76 - 1.36 A7-1 -- page 67 of 119 --

TABLE A-7. Environmental Measurements Laboratory Quality Assessment Program (EML)-

Concentration" EML Control Lab Code Type Date Analysis Laboratory results Resultb Limits' STW-992 water 09/02/03 Am-241 9.78 i 0.32 8.76 0.79 - 1.41 The September, 2003 results are preliminary. Control limits used were taken from the March, 2003 data.

Control limits may vary slightly when the final study is published.

STW-992 water 09/02/03 Co-60. 468.30 +/-4.10 513.00 0.80 - 1.20 STW-992 water 09/02/03 Cs-134 53.90 +/- 0.80 63.00 0.80 - 1.30 STW-992 water 09/02/03 Cs-1 37 76.10 +/- 1.40 80.30 0.80 - 1.22 STW-992 water 09/02/03 H-3 355.20 +/- 12.80 446.30 0.78 - 2.45 STW-992 water 09/02/03 Pu-238 1.71 +/-0.07 2.07 0.74 - 1.20 STW-992 water 09/02/03 Pu-239140 4.24 +/- 0.01 4.99 0.79 - 1.20 STW-992 water 09/02/03 Sr-90 6.70 +/- 0.50 7.04 0.69 - 1.34 STW-992 water 09/02103 Uranium 5.10 +/- 0.60 5.69 0.75 - 1.33 STW-993 water 09/02/03 Gr. Alpha 688.00 +/- 7.60 622.00 0.58 - 1.29 STW-993 water 09/02/03 Gr. Beta 1985.00 +/- 111.00 1948.00 0.61 - 1.43 STSO-994 soil 09/02/03 Am-241 19.70 +/- 1.50 18.40 0.65 - 2.28 STSO-994 soil 09/02/03 Cs-137 1928.00 +/- 19.00 1973.00 0.80 - 1.25 STSO-994 soil 09/02/03 K-40 533.00 +/- 79.00 488.00 0.80 - 1.32 STSO-994 soil 09/02103 Pu-238 15.30 +/- 0.80 14.60 0.59 - 2.88 STSO-994 soil 09/02103 Pu-239/40 32.50 +/- 2.30 30.40 0.71 - 1.30 STSO-994 soil 09/02103 Sr-90 69.80 +/- 2.30 80.30 0.67 - 2.90 STSO-994 soil 09/02/03 Uranium 228.30 +/- 17.10 259.30 0.71 - 1.32 STAP-995 Air Filter 09/02/03 Am-241 0.64 +/- 0.05 0.44 0.70 - 2.34 STAP-995 Air Filter 09/02/03 Co-60 48.50 +/- 0.40 55.10 0.80 - 1.26 STAP-995 Air Filter 09/02/03 Cs-137 51.20 +/- 1.10 54.80 0.80 - 1.32 STAP-995 Air Filter 09/02103 Mn-54 53.70 +/- 1.10 58.00 0.80 - 1.35 STAP-995 Air Filter 09/02103 Pu-238 0.24 +/- 0.05 0.23 0.67 - 1.33 STAP-995 Air Filter 09/02/03 Pu-239/40 0.41 +/- 0.10 0.40 0.73 - 1.26 STAP-995 Air Filter 09/02/03 Sr-90 1.90 +/- 0.10 2.06 0.53 - 1.84 STAP-995 Air Filter 09/02/03 Uranium 0.80 +/- 0.06 0.82 0.79 - 2.10 STAP-996 Air Filter 09/02/03 Gr. Alpha 3.23 t 0.07 3.11 0.73 - 1.43 STAP-996 Air Filter 09/02/03 Gr. Beta 4.18 +/- 0.03 3.89 0.76 - 1.36

' Results are reported In Bq/L with the following exceptions: Air Filters (Bq/Filter), Soil and Vegetation (Bq/kg).

b The EML result listed Is the mean of replicate determinations for each nuclide f the standard error of the mean.

c Control limits are reported by EML as the ratio of Reported Value I EML value.

c A low bias for Cs-1 34 activity has been observed in the past. No errors have been found Inthe library or efficiency.

Additional spike analyses will be performed and a correction factored Into the calculation.

Reporting error.

A7-2 -- page 68 of 119--

APPENDIX B REMP ANNUAL

SUMMARY

-- page 69 of 119 --

TABLE B-1 SAMPLING AND ANALYSIS FREQUENCY

SUMMARY

Number Number Number Sample of Collection of Type of Analysis of Type Sampling Frequency Samples Analysis Frequency Samples Locations Collected _____Analyzed*

Gross Weekly 515 Air PAricuat 10 Weekly 515 Beta Particulate Gamma Quarterly 40 Isotopic Composite Air Iodine 10 Weekly 515 Iodine 1 l Weekly [ 515 Direct Quarterly Exposur Radiation 54 (continuous) 213 Exposure Quarterly 213 (T L D ) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Surface Gamma Monthly 12 Water 1 Monthly 12 Isotopic (Grab) Tritium Quarterly 4 Composite Gamma Monthly 12 Surface Isotopic Water 1Mnhy1 (Effluent 1 Monthly 12 Tritium Quarterly 4 Composite) Composite Iodine"' Monthly 12

Number of samples analyzed does not include duplicate analysis, recounts, or reanalysis.

-- page 70 of 119 --

TABLE B-1 (continued)

Number Number Number Sample of Collection of Type of Analysis of Type Sampling Frequency Samples Analysis Frequency Samples

- Locations LI_l_Collected _ Analyzed*

Surface Gamma Monthly 23 Water Iooi (Upstream 2 Monthly 23 Isotopic Composite) Tritium Quarterly 8 Composite Gamma Quarterly 12 Well Water 2** Quarterly 12 Isotopic Tritium Quarterly 12 Gross Beta Monthly 12 Drinking Mthl 12 Gamma Monthly 12 Water onthy 12Isotopic Tritium Quarterly 4 Composite

Number of samples analyzed does not include duplicate analysis, recounts, or reanalysis.

- Samples collected at CL-12 are taken prior to water treatment and after water treatment.

-- page 71 of 119 --

TABLE B-1 (continued)

Number Number Number Sample of Collection of Type of Analysis of Type Sampling Frequency Samples Analysis Frequency Samples

. Locations Collected Analyzed*

Shoreline Semi- 2 Gamma Semi- 2 Sediment Annually Isotopic I Annually

[IMonthly 4 Sm IGamma lIsotopic l Monthly/ 112 Grass 4 Semi- 56 (including l Semi-Monthly 112 Gross Monthly 36 Monthly Beta Vegetables 4 (during the 36 Gamma Monthly 72 growing Iooi season) (including Fish 2 SeAni- 16 Gamma Semi- 16 I ih l 2 lAnnually l 6 lIsotopic lAnnually ll Gamma Monthly I 19 Monthly / Isotopic Semi-Monthly Milk 1 Semi- 19 Iodine" Monthly / 19 Monthly** Semi-Monthly

Number of samples analyzed does not include duplicate analysis, recounts, or reanalysis.

- Samples are collected Monthly from November through April (as delineated within the Station ODCM) and Semi-Monthly during May through October.

- page 72 of 119 -

IN.

TABLE B-2 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

Name of Facility: Clinton Power Station Docket No. 50-461 Location of Facility: DeWitt, Illinois Reporting Period: 01 January - 31 December 2003 (county, state)

Medium or Type of All Location Control Pathway Analysis Indicator with Highest Locations:

Sampled Locations: Annual (UniTotal Lower ---Mean Mean Mean (f) Number of (Unit of Number Limit of Mean (f) ------- Non-routine Measurement) Performed Detecton (Range) Name (Range) Reported (LLD) Distance- Measurements Mean (f) -

(Range) 20.7 CL-49 20.7 Radiation Gamma (197/197) 3.5 miles W (16/16)

(mRem/qtr) 213 (18.0 - 22.9 (4/4) (20.1 -

__ __ _ __ _ __ _ _ 22.9) (20.1 - 26.4) 21.8) _ _ _ _ _ _

Gross 0.026 CL-3 0.027 0 Beta (462/462) 0.7 miles NE (52/52)

- (.017 -

Air 514 .033) .027 (51/51) (0.020 -

Particulates Gamma (.018- .033) 0.033)

(pCi/M 3) Spec 40 Cs 134 0.05 <0.0012 LLD 0 13 7 cs 0.06 <0.0009 LLD 0 Air Iodine l 1131 I ---

3

-I 0.07 <MDA LLD 0 (pCi/M ) 514 Note: Column explanations are at the end of Table B-2.

-- page 73 of 119 --

TABLE B-2 (continued)

Medium or Type of Lower All Location Control Number of Pathway Analysis Limit of Indicator with Highest Locations: Non-routine Sampled -Detection Locations: Annual Reported Total (LLD) Mean Mean (f) - Measurements (Unit of Number Mean (f)

Measurement) Performed (Range) Name (Range)

Distance -

. Direction Mean (f) -

(Range) _

Tritium 3,000 <162 NA 0 4

Gamma Spec 12 Surface Water Mn54 15.0 <3.9 NA 0 Grab Fe" 30.0 <5.8 - NA 0 (pCi/) Co0 5

15.0 <4.9 . NA 0 C0°° 15.0 <3.6 . NA 0 Zn65 30.0 <4.8 - NA 0 Nbs 15.0 <4.3 - NA 0 ZrVs 30.0 <11.2 - NA 0 Cs" 4 15.0 <3.4 - NA 0 7

Cs" 18.0 <4.7 . NA 0 140 Ba 60.0 <26.0 . NA 0 La1 40 15.0 <6.7 . NA 0 Ce144 <36.9 . NA 0 Note: Column explanations are at the end of Table B-2.

-- page74of119--

TABLE B-2 (continued)

Medium or Type of Lower All Location Control Number of Pathway Analysis Limit of Indicator with Highest Locations: Non-routine Sampled - -Detection Locations: Annual Reported Total (LLD) Mean Mean (f) - Measurements (Unit of Number Mean (f) .

Measurement) Performed (Range) Name (Range)

Distance -

Direction Mean (f) -

.__ _ __ I (Range) I Tritium 3,000 <162 NA 0 12

.131 1.0 <0.5 NA 0 12 Gamma Spec Surface Water 35 Composite Mn 15.0 <5.5 NA (pCi/) Fe" 30.0 <12.7 . NA 0 co 15.0 <5.3 . NA 0 COGo 15.0 <6.5 . NA 0 Zn 30.0 <10.3 . NA 0 NbWs 15.0 <6.9 . NA 0 Zr95 30.0 <13.5 . NA 0 Cs 1 3 4 15.0 <7.0 . NA 0 Cs 1 3 7 18.0 <6.8 . NA 0 Ba"40 60.0 <37.0 . NA 0 La140 15.0 <10.9 . NA 0

. Ce"1 . <53.8 . NA 0 Note: Column explanations are at the end of Table B-2.

-- page 75 of 119 --

TABLE B-2 (continued)

Medium or Type of Lower All Location Control Number of Pathway Analysis Limit of Indicator with Highest Locations: Non-routine Sampled -Detection Locations: Annual Reported Total (LLD) Mean Mean (f) - Measurements (Unit of Number Mean (f)

Measurement) Performed (Range) Name (Range)

Distance -

Direction Mean (f) -

(Range) _

Gross Beta 4 1.4 (0/12) CL-14 NA 0 12 (0.9 - 2.6) 0 Miles 2.6 (0/12)

(0.9 - 2.6)

Tritium 3,000 <162 NA 0 4

Gamma Drinking Spec Water 12 (pCi/I)

Mns4 15.0 <6.1 . NA Fe59 30.0 <10.8 . NA 0 Co's 15.0 <6.1 . NA 0 Co5o 15.0 <6.5 . NA 0 Zn65 30.0 <9.4 . NA 0 Nb95 15.0 <5.7 . NA 0 Zr95 30.0 <11.6 . NA 0 Cs"4 15.0 <5.6 . NA 0 Cs13 7

18.0 <5.5 . NA 0 14 Ba 0 60.0 <31.0 . NA 0 La140 15.0 <7.3 . NA 0 14 4 .Ce <56.7 . NA 0 Note: Column explanations are at the end of Table B-2.

-- page 76 of 119 --

TABLE B-2 (continued)

Medium or Type of Lower All Location Control Number of Pathway Analysis Limit of Indicator with Highest Locations: Non-routine Sampled - -Detection Locations: Annual Reported Total (LLD) Mean Mean (f) - Measurements (Unit of Number Mean (f)

Measurement) Performed (Range) Name (Range)

Distance -

Direction Mean (f) -

(Range) II Tritium 3,000 <162 . NA 0 12 Gamma Spec 12 Mn'4 15.0 <4.2 . NA 0 Well Water Fe"' 30.0 <8.2 . NA 0 (pCi/I) Cos5 15.0 <3.9 . NA 0 COS° 15.0 <4.8 . NA 0 Zn65 30.0 <6.1 . NA 0 Nbs 15.0 <5.2 . NA 0 Zr95 30.0 <12.9 - NA 0 Cs 134 15.0 <4.5 - NA 0 Cs'37 18.0 <6.2 - NA 0 Ba140 60.0 <23.5 - NA 0 La140 15.0 <7.3 . NA 0 Ce' 4 - <48.4 . NA 0 1.0 <0.6 l NA 0 19 Gamma Milk (pCi/l) Spec Cs'3 4 15.0 <8.6 l NA 0 Cs'37 18.0 <7.3 - NA 0 Ba140' 60.0 <30.8 - NA 0 La"40' 15.0 <12.5 - NA 0 (U) Untreated well water sample Note: Column explanations at the end of Table B-2.

-- page 77 of 119 --

TABLE B-2 (continued)

Location with Highest Medium or Type of All Annual Control Pathway Analysis Lower Indicator Mean Locations: Number of Sampled Limit of Locations: Name Non-routine Tot Detectione . Dit Mean (f) - Reported (Unit of Totl (LLD) Mean (f) Dise n -- -- Measurements Measurement) Number (Range)

Performed (Range)----- Direction (Range)

Mean (f) -

(Range)

Gamma Spec Vegetables 40 (pCi/g wet) "131 .060 <0.046 . <.035 0 Cs"' .060 <0.022 <.025 0 1 3 CS 7 .080 <0.022 <.019 0 Gamma Spec Grass 56 (pCi/g wet) "131 .060 0.058 NA 0 Cs"4 .060 0.034 NA 0 1 3 CS 7 .080 0.033 NA 0 Gamma Spec 16 F Mn54 0.130 <0.017 NA 0 Fish Fe"' 0.260 <0.058 NA 0 (pCi/g wet) Cos 5 0.130 <0.019 NA 0 COGO 0.130 <0.016 NA 0 Zn6s 0.260 <0.040 NA 0 Cs"4 0.130 <0.015 NA 0 Cs13' 0.150 <0.018 NA 0 Gamma Shoreline Spec Sediments 2 (pCi/g dry) Cs134 0.150 <0.016 l NA 0 13 Cs 7 0.180 <0.012 - NA 0 Note: Column explanations at the end of Table B-2.

-- page 78 of 119 --

TABLE B-2 (continued) q q q q Location with Highest Type of Medium or All Annual Control Analysis Pathway Lower Indicator Mean Locations: Number of Sampled Limit of Locations:

Non-routine Total Detection Name Mean (f) - Reported (Unit of (LLD) Mean (f) Distance - Measurements Measurement) Number (Range) Direction (Range)

Performed Mean (f) -

(Ranqe)

I Column 1 l Column 2 l Column 3 l Column 4 l Column 5 l Column 6 l Column 7 l TABLE EXPLANATIONS:

Column 1: The Unit of Measurement describes all the numerical values for LLD, Mean and Range reported for a particular sample medium. For example: the Gross Beta LLD in AIR PARTICULATES is 0.010 pCi/m3 . Abbreviations used are: pCi/m 3 = pico-curie per cubic meter of sampled air; mRemlquarter = exposure measured for calendar quarter period; pCi/l = pico-curie per liter of sample; pCi/g = pico-curie per gram of sample.

Column 2: The Types of Analyses are described as follows: Gamma Spec.=

measurement of each radioisotope in a sample using Gamma Spectroscopy; Gross Betas and Gross Alphas = measurement of the radioactivity in a sample by measurement of emitted betas and alphas - no determination of individual radioisotopes is possible; Tritium = measurement of tritium (H3) in sample by liquid scintillation counting method; TLD = direct measurement of gamma exposure using thermoluminescent dosimeters. Total number of analyses does not include duplicate analyses; recounts, or reanalysis. Only ODCM required LLDs and detectable activity (excluding some naturally occurring activity such as Bi212 ) results are reported in this table. All sample results can be found in Appendix E of this report.

Column 3: The ODCM required LLD is given when applicable. LLD reported is the highest of those reported for each of the analyses during the year; if all analyses reported positive values, no LLD-is reported. It should be noted that - in most cases - the CPS REMP uses lower detection limits than required.

-- page 79 of 119 --

TABLE B-2 (continued)

Location with Type ofHighest Medium or Type of All Annual Mean Control Pathway Analysis Lower Indicator Locations: Number of Sampled Limit of Locations: Name Non-routine Total Detection - -Distance - Mean (f) - Reported (Unit of Number (LLD) Mean (f) Direction - -Measurements Measurement) Performed (Range) -(Range)

Mean (f) -

(Range)

Column 1 Column 2 l Column 3 l Column 4 l Column 5 l Column 6 Column 7 TABLE EXPLANATIONS (continued):

Column 4: Samples taken at Indicator Locations during an operational Radiological Environmental Monitoring Program (REMP) reliably measure the quantities of any radioisotopes cycling through the pathways to man from a nuclear station. *The reported values are the mean or average for the year of all samples of that type which had values greater than the LLD. (f) is the fraction of all the samples taken at all indicator locations for the medium, which reported values greater than the-LLD. Example: Seven (7) results greater than LLD out of fifteen (15) samples taken would be reported as 7/15. The Range is the values of the lowest to highest sample results greater than LLD reported at all the indictor locations for that medium.

Column 5: The Mean, f-fraction and Range along with the name of the location, distance from the CPS gaseous effluent stack in miles, and the letter name corresponding to the compass sector in the direction of the sample location from the CPS HVAC gaseous effluent stack. Th'e .

location with the highest annual mean is compared to both Indicator and Control Locations of the medium samples.

Column 6: Control locations are sited in areas with low relative deposition and /

or dispersion factors. Sample results are used as reference for the control location.

Column 7: NRC Regulations [Branch Technical Position, Revision. 1, November 1979] include a table of radioisotope concentrations that, if exceeded by confirmed sample measurements, indicate'that a Non-routine Reported Measurement exists. Such measurements require further investigation to validate the source.

-- page 80 of 119 --

APPENDIX C Glossary Activation - the process in which stable atoms become radioactive atoms by absorbing neutrons.

ALARA - acronym for "As Low As Reasonably Achievable" which applies to many facets of nuclear power (i.e., radiation exposure for personnel kept low, minimizes number / activity of effluent releases).

Alpha particle - a charged particle emitted from the nucleus of an atom having a mass and charge equal in magnitude to a helium nucleus which has two protons and two neutrons.

Atom - the smallest component of an element having all the properties of that element. Comprised of protons, neutrons and electrons such that the number of protons determines the element.

Background radiation - source of radiation that mankind has no control over, such as cosmic (from the sun) and terrestrial (naturally occurring radioactive elements).

Beta particle - a charged particle equivalent to an electron if negative or a positron if positive, originating near the nucleus of an atom during radioactive decay or fission.

Control Location - a sample collection location considered to be far enough away from the Clinton Power Station so as not to be influenced by station operations.

Cosmic radiation - penetrating ionizing radiation originating from the sun and from outer space varying from altitude and latitude.

Curie (Ci) - the unit of radioactivity equal to 2.2 trillion disintegrations per minute..

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 that expresses all radiations on a common scale for calculating the effective-absorbed dose (the unit of dose equivalent is the rem).

Ecology - a branch of biology dealing with the relations between organisms and their environment.

Electromagnetic radiation - a traveling wave motion resulting from changing electric or magnetic fields. Familiar sources of electromagnetic radiation range from x-rays (and gamma rays) of short wavelength, through the ultraviolet, visible and infrared regions, to radar and radio waves of relatively long wavelength. All electromagnetic radiation travels in a vacuum at the speed of light.

-- page 81 of 119 --

Element - one of 103 known chemical substances that cannot be broken down further without changing its chemical properties.

Environment - the aggregate of surrounding things, conditions, or influences.

Exposure - a measure of the ionization produced in air by x-ray or gamma radiation. Acute exposure is generally accepted to be a 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 nucleus splits into two smaller nuclei and releases 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 dose rate or radioactive material that may be the result of Clinton Power Station operations.

Ionization - the process by which a neutral atom or molecule acquires a positive or negative charge.

Irradiation - exposure to radiation.

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 actually present.

Microcurie (pCi) - one millionth of a curie and represents 2.2 million decays per minute.

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.

Nucleus - the center of an atom containing protons and neutrons; determines the atomic weight and contributes to the net positive charge of an atom. Nuclei (plural).

Nuclides - atoms which all have the same atomic number and mass number.

Periphyton - water plant life (i.e., algae).

Radiation - the process by which energy is emitted from a nucleus as particles (alpha, beta, and neutron) or waves (gamma).

Radionuclide - a radioactive species of an atom characterized by the constitution of its nucleus. The number of protons, number of neutrons, and energy content specify the nuclear constitution.

- page 82 of 119 --

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 Man.

Roentgen - a measure of ionization produced in air by x-ray or gamma radiation.

Site boundary - the site boundary is the line beyond which the land is neither owned, nor leased, nor otherwise controlled by the licensee.

Statistics - the science that deals with the collection, classification, analysis and interpretation of numerical data by use of mathematical theories of probabilities.

Target tissue - any tissue or organ of the body in which radiation is absorbed.

Terrestrial radiation - source of radiation pertaining to the ground (Earth's crust).

X-rays - high energy, short wavelength electromagnetic radiation, emitted from the electron shells of an atom.

-- page83of119--

APPENDIX D Exceptions to the REMP During 2003 Data from the radiological analysis of environmental samples are routinely reviewed and evaluated by the ODCM Program Owner at the Clinton Power Station (CPS). 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 (ODCM) reporting levels. Reporting levels for radioactivity concentrations from environmental samples are required by the Station's ODCM and are listed in Table 3-A of this report.

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

Examine the collection data sheets for any indication of collection or delivery errors, tampering, vandalism, equipment calibration or any malfunctionis] as a result of electrical power failure[s], weather conditions, blown fuses, 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 Radiological Effluent Release Reports

If possible, recount and / or reanalyze the sample

Collect additional follow-up samples as warranted During 2003, no investigations were performed as a result of reaching any ODCM reporting levels. All sample analysis required by the ODCM achieved the LLDs specified by the Station's ODCM (refer to Table 3-B of this report).

Sampling and analysis exceptions are listed in this appendix.

-- page 84 of 119 --

SAMPLING AND ANALYSIS EXCEPTIONS FOR 2003 The exceptions described below are those that are considered 'deviations' from the Radiological Environmental Monitoring Program as required by the Station's ODCM. By definition, 'deviations' are permitted as delineated within NUREG-0133, 'Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants," October 1978, and within Radiological Assessment Brach Technical Position, Revision 1, November 1979 which states.... "Deviations are permitted from the required sampling schedule if specimens are unobtainable due to hazardous conditions, seasonal unavailability, malfunction of automatic sampling equipment and other legitimate reasons".... The below section addresses the reporting requirements found within Section 7.1 of the Station's ODCM.

08 January 2003 During the performance of the Weekly Air Sample Collection Surveillance, the air sampler at CL-03 was found not to be running. Subsequent maintenance revealed that the motor had become seized. This prevented the minimum collection criteria of 200 mi 3 as only 188 m3 was achieved.

The air sampler was replaced at the time of discovery with a spare unit.

19 February 2003

During the performance of the Weekly Air Sample Collection Surveillance, the air sampler at CL-08 was found to be running, but there were no flow indications. Subsequent maintenance revealed that the motor shaft was rotating without any rotational vane movement creating zero flow. The air sampler was replaced at the time of discovery with a spare unit.

26 February 2003

During the performance of the February Monthly Water Composite Collection Surveillance, CL-99 was found inoperable. Upon closer evaluation, the North Fork Creek had frozen due to extremely frigid weather conditions. When coupled with a lower than normal creek level, the CL-99 Compositor was unable to obtain the February Monthly Composite Sample. As a result of early spring thawing conditions, the March Monthly Water Composite Collection Sample resumed.

19 March 2003

During the performance of the Weekly Air Sample Collection Surveillance, the air sampler at CL-08 was found not to be running. Subsequent maintenance revealed that the motor had become seized. This prevented the minimum collection criteria of 200 m3 being collected. The air sampler was replaced at the time of discovery with a spare unit.

-- page 85 of 119 --

SAMPLING AND ANALYSIS EXCEPTIONS FOR 2003 (continued) 26 March 2003

During the performance of the Weekly Air Sample Collection Surveillance, the air sampler at CL a non-ODCM required air sample - was found to be running, but there were no flow indications. Subsequent maintenance revealed that the motor shaft was rotating without any rotational vane movement creating zero flow. The air sampler was replaced at the time of discovery with a spare unit.

14 May 2003

During the performance of the Weekly Air Sample Collection Surveillance, the air sampler at CL a non-ODCM required air sampler - was found not to be running. Subsequent maintenance revealed that the motor had become seized. This prevented the minimum collection criteria of 200 m3 from being collected. The air sampler was replaced at the time of discovery with a spare unit.

18 June 2003

During the performance of the Weekly Air Sample Collection Surveillance, the air sampler at CL a non-ODCM required air sampler - was found not to be running. Subsequent maintenance revealed that the motor had become seized. This prevented.the minimum collection criteria of 200 m3 from being collected. The air sampler was replaced at the time of discovery with a spare unit.

27 June 2003

During the performance of the Second Quarter Environmental TLD Changeout, REMP TLDs CL-74 and CL-37 were found to be missing from their respective TLD Sample Holders. A subsequent investigation concluded that unauthorized personnel who frequent public access areas most likely removed these REMP TLDs from their Sample Holders.

27 August 2003

During the performance of the August Monthly Vegetation Collection Surveillance, CL-1 14 was able to produce two (2) of the three (3) broadleaf vegetables, CL-115 was able to produce one (1) of the three (3) broadleaf vegetables and CL-118 was able to produce one (1) of the three (3) broadleaf vegetables. A subsequent investigation revealed that due to wildlife consumption, rotting and weed growth, the collection of the remaining broadleaf vegetables did not meet the minimum weight criteria.

--page 86 of i9 --

SAMPLING AND ANALYSIS EXCEPTIONS FOR 2003 (continued) 22 September 2003

During the performance of the September Monthly Vegetation Collection Surveillance, CL-114 was able to produce two (2) of the three (3) broadleaf vegetables, CL-115 was able to produce one (1) of the three (3) broadleaf vegetables and CL-118 was able to produce two (2) of the three (3) broadleaf vegetables. A subsequent investigation revealed that due to wildlife consumption, rotting and weed growth, the collection of the remaining broadleaf vegetables did not meet the minimum weight criteria.

31 December 2003

During the performance of the December Monthly Water Composite Collection Surveillance, CL-90 was found approximately one t1) gallon low of meeting the minimum two (2) gallon collection criteria. A grab sample was obtained to augment this minimum criterion for analysis. Upon a closer evaluation, the sampling hose had 'slipped' causing previously collected lake water to be siphoned back into the lake. After a field adjustment of the sampling hose and re-calibration of the Water Compositor, the sample collection resumed for the January Monthly Water Composite Collection.

27 January 2004

Note that although this exception was not known until January 2004, this impacted the 2003 4t1h Quarter results and therefore appears as an exception in 2003. During the performance of the Fourth Quarter Environmental TLD Changeout, REMP TLD CL although installed with data collected throughout the 41h Quarter and routed to the Vendor for analysis - the Vendor reported back that TLD CL-3 was damaged and was otherwise unable to yield any results. A subsequent investigation concluded that this TLD was either damaged prior to receipt at Clinton Power Station or during the return flight back to the Vendor.

-- page 87 of 119 --

APPENDIX E CPS Radiological Environmental Monitoring Results During 2003

-- page 88 of 119 --

GROSS BETA ACTIVITY IN AIR PARTICULATES FOR 2003 (pCI/m 3)

DATE COLLECTED CL-1 CL-2 CL-3 CL-4 CL-6 08-Jan-2003 0.027 +/- 0.005 0.029 +/- 0.005 0.028 +/- 0.005 0.025 +/- 0.004 0.026 +/- 0.004 15-Jan-2003 0.027 +/- 0.003 0.032 +/- 0.004 0.029 +/- 0.004 0.030 +/- 0.004 0.028 +/- 0.003 22-Jan-2003 0.030 +/- 0.004 0.030 +/- 0.004 0.035 +/- 0.004 0.031 +/- 0.004 0.031 :+/- 0.004 29-Jan-2003 0.031 +/- 0.004 0.034 +/- 0.004 0.036 +/- 0.004 0.033 +/- 0.004 0.033 +/- 0.004 05-Feb-2003 0.032 +/- 0.004 0.033 +/- 0.004 0.034 +/- 0.004 0.031 +/- 0.004 0.034 +/- 0.004 12-Feb-2003 0.023 +/- 0.004 0.025 +/- 0.004 0.033 +/- 0.004 0.025 +/- 0.004 0.029 +/- 0.004 19-Feb-2003 0.016 +/- 0.004 0.019 +/- 0.004 0.019 +/- 0.004 0.016 +/- 0.004 0.017 +/- 0.004 26-Feb-2003 0.024 +/- 0.004 0.023 +/- 0.004 0.026 +/- 0.004 0.025 +/- 0.004 0.025 +/- 0.004 05-Mar-2003 0.035 +/- 0.004 0.031 +/- 0.004 0.038 +/- 0.004 0.034 +/- 0.004 0.042 +/- 0.005 12-Mar-2003 0.033 +/- 0.004 0.033 t 0.004 0.036 +/- 0.004 0.032 +/- 0.004 0.033 +/- 0.004 19-Mar-2003 0.025 +/- 0.004 0.025 t 0.004 0.024 +/- 0.004 0.025 +/- 0.004 0.022 +/- 0.004 26-Mar-2003 A 0.020 t 0.003 0.018 +/- 0.003 0.020 +/- 0.003 0.019 +/- 0.003 02-Apr-2003 0.018 +/- 0.003 0.015 +/- 0.003 0.017 +/- 0.003 0.020 +/- 0.003 0.020 +/- 0.003 09-Apr-2003 0.012 +/- 0.003 0.014 +/- 0.003 0.015 +/- 0.003 0.014 +/- 0.003 0.013 +/- 0.003 16-Apr-2003 0.023 +/- 0.004 0.023 +/- 0.004 0.022 +/- 0.004 0.021 +/- 0.004 0.022 +/- 0.004 23-Apr-2003 0.017 +/- 0.003 0.018 +/- 0.004 0.021 +/- 0.004 0.018 +/- 0.004 0.017 +/- 0.004 30-Apr-2003 0.020 +/- 0.003 0.026 +/- 0.004 0.023 +/- 0.004 0.017 +/- 0.003 0.022 +/- 0.003 07-May-2003 0.024 +/- 0.004 0.022 +/- 0.004 0.025 +/- 0.004 0.021 +/- 0.004 0.027 +/- 0.004 14-May-2003 0.017 +/- 0.003 0.015 +/- 0.003 0.018 +/- 0.003 0.017 +/- 0.003 0.019 +/- 0.003 21 -May-2003 0.015 +/- 0.003 0.018 +/- 0.004 0.018 +/- 0.003 0.017 t 0.003 0.018 +/- 0.003 28-May-2003 0.013 +/- 0.003 0.015 +/- 0.003 0.012 +/- 0.003 0.014 +/- 0.003 0.012 +/- 0.003 04-Jun-2003 0.031 +/- 0.004 0.029 +/- 0.004 0.031 +/- 0.004 0.025 +/- 0.004 0.022 +/- 0.004 11-Jun-2003 0.018 +/- 0.003 0.021 +/- 0.003 0.022 +/- 0.003 0.018 +/- 0.003 0.021 +/- 0.003 18-Jun-2003 0.025 +/- 0.004 0.021 +/- 0.004 0.025 +/- 0.004 0.019 +/- 0.003 A 25-Jun-2003 0.019 +/- 0.004 0.018 +/- 0.004 0.022 +/- 0.004 0.019 +/- 0.004 0.019 +/- 0.004 02-JuI-2003 0.025 +/- 0.004 0.025 +/- 0.004 0.024 +/- 0.004 0.022 +/- 0.004 0.023 +/- 0.004 09-Jul-2003 0.028 +/- 0.004 0.025 +/- 0.004 0.024 +/- 0.004 0.023 :t 0.004 0.022 :t 0.004 16-Jul-2003 0.024 +/- 0.004 0.022 +/- 0.004 0.022 +/- 0.004 0.021 +/- 0.004 0.017 +/- 0.004 23-Jul-2003 0.018 +/- 0.004 0.024 +/- 0.004 0.024 +/- 0.004 0.020 +/- 0.004 0.019 +/- 0.003 30-Jul-2003 0.021 +/- 0.004 0.021 +/- 0.004 0.024 +/- 0.004 0.022 +/- 0.004 0.023 +/- 0.004 06-Aug-2003 0.025 +/- 0.004 0.024 +/- 0.004 0.027 +/- 0.004 0.025 +/- 0.003 0.025 +/- 0.004 13-Aug-2003 0.022 t 0.004 0.019 +/- 0.004 0.022 +/- 0.004 0.019 +/- 0.004 0.020 :+/- 0.004 20-Aug-2003 0.031 +/- 0.004 0.033 +/- 0.004 0.038 +/- 0.004 0.036 +/- 0.004 0.033 :t 0.004 27-Aug-2003 0.039 +/- 0.004 0.034 + 0.004 0.038 +/- 0.004 0.039 +/- 0.005 0.037 +/- 0.004 03-Sep-2003 0.021 :t 0.003 0.018 t 0.003 0.021 +/- 0.003 0.016 +/- 0.003 0.020 :+/- 0.003 10-Sep-2003 0.028 +/- 0.003 0.031 + 0.004 0.037 +/- 0.004 0.027 +/- 0.004 0.032 +/- 0.004 17-Sep-2003 0.034 +/- 0.004 0.036 + 0.004 0.038 +/- 0.004 0.038 +/- 0.004 0.036 +/- 0.004 24-Sep-2003 0.030 +/- 0.004 0.032 +/- 0.004 0.032 +/- 0.004 0.025 +/- 0.004 0.032 t 0.004 01-Oct-2003 0.021

0.004 0.020 t 0.004 0.023 +/- 0.004 0.022 +/- 0.004 0.019 +/- 0.004 08-Oct-2003 0.021 +/- 0.004 0.025 +/- 0.004 0.021 +/- 0.004 0.024 +/- 0.003 0.025 +/- 0.004 15-Oct-2003 0.034 +/- 0.004 0.033 +/- 0.005 0.034 +/- 0.004 0.029 +/- 0.004 0.032 +/- 0.004 22-Oct-2003 0.038 +/- 0.004 0.036 +/- 0.004 0.035 +/- 0.004 0.038 +/- 0.004 0.035 : 0.004 29-Oct-2003 0.016 +/- 0.003 0.017 + 0.004 0.018 +/- 0.004 0.015 +/- 0.004 0.017 +/- 0.004 05-Nov-2003 0.034 +/- 0.004 0.030 +/- 0.004 0.028 +/- 0.004 0.031 +/- 0.004 0.031 +/- 0.004 12-Nov-2003 0.040 +/- 0.005 0.000 +/- 0.005 0.038 +/- 0.005 0.042 +/- 0.005 0.039 +/- 0.005 19-Nov-2003 0.023 +/- 0.004 0.023 + 0.004 0.024 +/- 0.004 0.022 +/- 0.004 0.026 +/- 0.004 25-Nov-2003 0.023 +/- 0.004 0.023 + 0.004 0.022 +/- 0.004 0.023 t 0.003 0.025 : 0.004 03-Dec-2003 0.032 +/- 0.003 0.033 +/- 0.003 0.033 +/- 0.003 0.036 +/- 0.003 0.032 +/- 0,003 10-Dec-2003 0.027 +/- 0.004 0.033 +/- 0.004 0.031 +/- 0.004 0.030 +/- 0.004 0.032 : 0.004 17-Dec-2003 0.033 +/- 0.004 0.034 +/- 0.004 0.028 +/- 0.004 0.029 +/- 0.004 0.032 +/- 0.004 24-Dec-2003 0.033 +/- 0.005 0.027 +/- 0.005 0.025 +/- 0.005 0.023 +/- 0.005 0.019 +/- 0.005 31-Dec-2003 0.033

0.003 0.031 +/- 0.003 0.030 +/- 0.003 0.029 +/- 0.003 0.027 +/- 0.003

- page 89 of 119 -

GROSS BETA ACTIVITY IN AIR PARTICULATES FOR 2003 (continued)

DATE COLLECTED CL-7 CL-8 CL-11 CL-15 CL-94 08-Jan-2003 0.032 +/- 0.005 0.030 +/- 0.005 0.028 +/- 0.005 0.028 +/- 0.005 0.029 +/- 0.005 15-Jan-2003 0.030 t 0.003 0.031 :t 0.004 0.030 +/- 0.004 0.027 t 0.003 0.027 +/- 0.003 22-Jan-2003 0.034 +/- 0.004 0.032 +/- 0.004 0.033 +/- 0.004 0.032 +/- 0.004 0.032 +/- 0.004 29-Jan-2003 0.030 t 0.004 0.034 t 0.004 0.038 +/- 0.005 0.032 +/- 0.004 0.033 +/- 0.004 05-Feb-2003 0.033 +/- 0.004 0.033 +/- 0.004 0.031 +/- 0.004 0.035 +/- 0.004 0.031 +/- 0.004 12-Feb-2003 0.024 +/- 0.004 0.022 +/- 0.004 0.024 +/- 0.004 0.022 +/- 0.004 0.024 +/- 0.004 19-Feb-2003 0.016 +/- 0.004 A 0.018 +/- 0.004 0.011 +/- 0.003 0.016 +/- 0.004 26-Feb-2003 0.025 +/- 0.004 0.026

0.004 0.025 +/- 0.004 0.023 +/- 0.004 0.029 +/- 0.004 05-Mar-2003 0.034 +/- 0.004 0.038 +/- 0.004 0.035 +/- 0.004 0.035 +/- 0.004 0.035 +/- 0.004 12-Mar-2003 0.031 +/- 0.004 0.037 +/- 0.004 0.035 +/-t0.004 0.034 +/- 0.004 0.038 +/- 0.004 1 9-Mar-2003 0.027 +/- 0.004 A 0.028 t 0.004 0.026 +/- 0.004 0.032 +/- 0.004 26-Mar-2003 0.019 +/- 0.003 0.016 +/- 0.003 0.020 +/- 0.003 0.020 +/- 0.003 0.020 +/- 0.003 02-Apr-2003 0.019 +/- 0.003 0.018 +/-t0.003 0.018 +/- 0.003 0.018 +/- 0.003 0.019 +/- 0.003 09-Apr-2003 0.014 +/- 0.003 0.013 +/- 0.003 0.013 +/- 0.003 0.013 +/- 0.003 0.011 0.003 16-Apr-2003 0.026 +/- 0.004 0.022 :t 0.004 0.024 +/- 0.004 0.024 : 0.004 0.021 +/- 0.004 23-Apr-2003 0.020 +/- 0.004 0.020 +/- 0.004 0.019 +/- 0.003 0.020 t 0.004 0.019 +/- 0.004 30-Apr-2003 0.023 +/- 0.004 0.022 +/- 0.004 0.022 :t 0.004 0.019 +/- 0.003 0.023 +/- 0.004 07-May-2003 0.024 +/- 0.004 0.027 t 0.004 0.028 +/- 0.004 0.022 +/- 0.004 0.025 +/- 0.004 14-May-2003 0.018 +/- 0.003 0.015 +/- 0.003 0.018 +/- 0.003 0.018 +/- 0.003 A 21-May-2003 0.015 +/- 0.003 0.013 +/- 0.003 0.016 +/- 0.003 0.016 +/- 0.003 0.019 +/- 0.003 28-May-2003 0.016 +/- 0.003 0.017 +/- 0.003 0.017 +/- 0.003 0.018 +/- 0.003 0.016 +/- 0.003 04-Jun-2003 0.024 t 0.004 0.023 +/- 0.004 0.028 +/- 0.004 0.029 +/- 0.004 0.024 :t 0.004 11-Jun-2003 0.021 +/- 0.003 0.021 +/- 0.004 0.022 +/- 0.003 0.016 +/- 0.003 0.018 +/- 0.003 18-Jun-2003 0.020 +/- 0.004 0.024 +/- 0.004 0.027 +/- 0.004 0.018 +/- 0.003 0.022 +/- 0.004 25-Jun-2003 0.017 +/- 0.004 0.021 +/- 0.004 0.019 +/- 0.004 0.019 +/- 0.004 0.022 +/- 0.004 02-Jul-2003 0.022 +/- 0.004 0.024 +/- 0.004 0.023 +/- 0.004 0.023 :t 0.004 0.026 +/- 0.004 09-Jul-2003 0.026 +/- 0.004 0.025 +/- 0.004 0.029 +/- 0.004 0.028 +/- 0.004 0.033 +/- 0.005 16-Jul-2003 0.017 +/- 0.004 0.024 +/- 0.004 0.030 +/- 0.004 0.018 +/- 0.004 0.017 +/- 0.004 23-Jul-2003 0.020 +/- 0.004 0.022 +/- 0.004 0.025 +/- 0.004 0.020 +/- 0.004 0.024 +/- 0.004 30-Jul-2003 0.022 +/- 0.004 0.024 +/- 0.004 0.022 +/- 0.004 0.021 +/- 0.004 0.025 +/- 0.004 06-Aug-2003 0.023 +/- 0.003 0.029 +/- 0.004 0.026 +/- 0.003 0.021 +/- 0.003 0.026 +/- 0.004 13-Aug-2003 0.019 +/- 0.004 0.023 +/- 0.004 0.019 +/- 0.004 0.019 +/- 0.004 0.018

0.003 20-Aug-2003 0.032 +/- 0.004 0.037 +/- 0.004 0.033 +/- 0.004 0.033 +/- 0.004 0.035 +/- 0.004 27-Aug-2003 0.035 +/- 0.004 0.035 +/- 0.004 0.039 +/- 0.004 0.037 +/- 0.004 0.042 +/- 0.005 03-Sep-2003 0.019 +/- 0.003 0.022 +/- 0.003 0.020 +/- 0.003 0.018 +/- 0.003 0.019 +/- 0.003 10-Sep-2003 0.032 +/- 0.004 0.038 +/- 0.004 0.032 +/- 0.004 0.031 +/- 0.004 0.031 +/- 0.004 17-Sep-2003 0.032 +/- 0.004 0.040 +/- 0.004 0.039 +/- 0.004 0.034 +/- 0.004 0.040 +/- 0.004 24-Sep-2003 0.030 +/- 0.004 0.032:t 0.004 0.032 +/- 0.004 0.031 +/- 0.004 0.029 +/- 0.004 01-Oct-2003 0.021 +/- 0.004 0.022 +/- 0.004 0.021 +/- 0.004 0.018 +/- 0.004 0.021 :t 0.004 08-Oct-2003 0.023 +/- 0.004 0.024 +/- 0.004 0.028 t 0.004 0.022 +/- 0.003 0.025 +/- 0.004 15-Oct-2003 0.029 +/- 0.004 0.030 +/- 0.004 0.032 +/- 0.004 0.030 +/- 0.004 0.031 +/- 0.004 22-Oct-2003 0.038 +/- 0.004 0.039 +/- 0.004 0.037 +/- 0.004 0.036 +/- 0.004 0.034 +/- 0.004 29-Oct-2003 0.019 +/- 0.004 0.017 +/- 0.004 0.019 +/- 0.004 0.017 +/- 0.004 0.017 +/- 0.003 05-Nov-2003 0.033 +/- 0.004 0.026 +/- 0.004 0.035 +/- 0.004 0.031 +/- 0.004 0.027 +/- 0.004 12-Nov-2003 0.041 +/- 0.004 0.040 +/- 0.005 0.043 +/- 0.005 0.041 +/- 0.005 0.045 +/- 0.005 19-Nov-2003 0.020 +/- 0.004 0.027 +/- 0.004 0.026 +/- 0.004 0.024 +/- 0.004 0.026 +/- 0.004 25-Nov-2003 0.024 +/- 0.004 0.021 +/- 0.004 0.025 t 0.004 0.023 +/- 0.004 0.021 +/- 0.004 03-Dec-2003 0.034 +/- 0.003 0.033 +/- 0.003 0.034 +/- 0.003 0.030 +/- 0.003 0.033 t 0.003 10-Dec-2003 0.027 +/- 0.004 0.031 +/- 0.004 0.030 +/- 0.004 0.029 +/- 0.004 0.028 +/- 0.004 17-Dec-2003 0.035 +/- 0.004 0.035 +/- 0.004 0.030 +/- 0.004 0.032 +/- 0.004 0.029 +/- 0.004 24-Dec-2003 0.029 +/- 0.005 0.027 +/- 0.005 0.024 +/- 0.005 0.024 +/- 0.005 0.029 t 0.005 31 -Dec-2003 0.026 +/- 0.003 0.029 +/- 0.003 0.029 +/- 0.003 0.035 +/- 0.004 0.026 +/- 0.003

Control Location, all other locations are Indicator Locations.

A No data due to a mechanical failure of the air sample pump.

- page 90 of 119-

GAMMA ISOTOPIC ACTIVITY IN AIR PARTICULATES FOR 20030 (pCI/m')

SITE ISOTOPE 1ST QTR 2ND QTR 3RD QTR 4TH QTR CL-1 Be7 0.059 +/- 0.015 0.072 i 0.016 0.074 +/- 0.013 0.045 +/- 0.012 K40 < 0.0230 < 0.0210 < 0.0240 < 0.0240 Co'6 < 0.0011 < 0.0011 < 0.0007 < 0.0006 NbWs < 0.0012 < 0.0012 < 0.0014 < 0.0006 Zr"5 < 0.0014 < 0.0014 < 0.0015 < 0.0013 Ru103 < 0.0005 .< 0.0010 < 0.0009 < 0.0006 Ru 0's < 0.0106 < 0.0095 < 0.0044

0.0035 Cs"'4 < 0.0008 < 0.0007 c 0.0005 < 0.0008 Cs137 < 0.0004 < 0.0005

0.0008 < 0.0008 Ce14 1 < 0.0018 < 0.0019 < 0.0011 < 0.0018 14 Ce 4 < 0.0042 < 0.0041 c 0.0037 < 0.0054 CL-2 Be7 0.070 i 0.012 0.068 i 0.015 0.072 +/- 0.021 0.050 +/- 0.020 K40 < 0.0210 < 0.0220 < 0.0250 < 0.0240 Co"° < 0.0010 < 0.0010 < 0.0008 < 0.0006 Nb95 < 0.0012 < 0.0013 < 0.0011 < 0.0005 Zr95 < 0.0015 < 0.0015 < 0.0019 < 0.0012 Ru'°' < 0.0004 < 0.0008 < 0.0006 < 0.0009 Ru 10' < 0.0099 < 0.0088 < 0.0081 < 0.0064 Cs"4 < 0.0007 < 0.0005 < 0.0006 < 0.0009 Cs1 37 < 0.0004 < 0.0006 < 0.0007 < 0.0005 Ce 14 1 < 0.0019 < 0.0022 < 0.0012 < 0.0017 Ce 1 44 < 0.0042 < 0.0051 < 0.0048 < 0.0048 CL-3 Be7 0.064 +/- 0.013 0.078 +/- 0.016 0.065 +/- 0.014 0.065 +/- 0.013 K40 < 0.0250 < 0.0210 < 0.0250 < 0.0240 Co"6 < 0.0011 < 0.0010 < 0.0007 < 0.0006 Nb"5 < 0.0014 < 0.0013 < 0.0017 < 0.0006 Zr"5 < 0.0012 < 0.0019 < 0.0013 < 0.0013 103 Ru < 0.0008 < 0.0003 < 0.0011 < 0.0007 Ru10 s < 0.0071 < 0.0065 < 0.0053 < 0.0066 Cs1 34 < 0.0007 < 0.0007 < 0.0005 < 0.0010 37 Cs1 < 0.0004 < 0.0005 < 0.0008 < 0.0004 14 Ce ' < 0.0018 < 0.0015 < 0.0021 < 0.0009 Ce 144 < 0.0042 < 0.0053 < 0.0045 < 0.0035

All I"' results were < 0.07 pCi/m3

-- page 91 of 119 --

GAMMA ISOTOPIC ACTIVITY IN AIR PARTICULATES FOR 2003' (continued)

SITE ISOTOPE 15T QTR 2NO QTR 3RD QTR 4TH QTR CL-4 Be' 0.068 +/- 0.014 0.075 i 0.022 0.069 +/- 0.018 0.038 +/- 0.013 K40 < 0.0210 < 0.0260 < 0.0240 < 0.0230 Co"6 < 0.0010 < 0.0012 < 0.0007 < 0.0007 Nb's < 0.0011 < 0.0012 < 0.0012 < 0.0009

< 0.0013 < 0.0025 < 0.0009 < 0.0013 Ru'03 < 0.0006 < 0.0010 < 0.0011 < 0.0010 Ru'06 < 0.0073 < 0.0067 < 0.0046 < 0.0037 Cs"' < 0.0006 < 0.0005 < 0.0006 < 0.0008 Cs137

< 0.0009 < 0.0004 < 0.0006 < 0.0008 Ce"' < 0.0019 < 0.0015 < 0.0017 < 0.0015 Ce 1" < 0.0058 < 0.0042 < 0.0051 < 0.0031 CL-6 Be' 0.075 +/- 0.016 0.083 +/- 0.017 0.070 +/- 0.020 0.054 +/- 0.016 K'° < 0.0210 < 0.0230 < 0.0250 < 0.0240 Co'° < 0.0012 < 0.0012 < 0.0007 0.0007.

Nb' 0 < 0.0011 < 0.0012 < 0.0012 < 0.0007 Zr's < 0.0016 < 0.0014 < 0.0007 < 0.0009 Ru"'° < 0.0004 < 0.0007 < 0.0008 < 0.0006 Ru"os < 0.0070 < 0.0079 < 0.0069 < 0.0057 Cs"'3 < 0.0008 < 0.0005 < 0.0008 < 0.0008 Cs13

" < 0.0006 < 0.0004 < 0.0007 < 0.0008 Ce"4' < 0.0019 < 0.0011 < 0.0011 < 0.0021 Ce"' < 0.0045 < 0.0048 < 0.0047 < 0.0027 CL-7 Be' 0.055 +/- 0.014 0.074 +/- 0.015 0.052 +/- 0.014 0.041 +/- 0.013 K4° < 0.0210 < 0.0210 < 0.0260 < 0.0310 Co' 0 < 0.0010 < 0.0011 < 0.0007 < 0.0007 Nb95 < 0.0010 < 0.0012 < 0.0012 < 0.0004 Zr' 5 < 0.0013 < 0.0015 < 0.0013 < 0.0013 Ru'°' < 0.0007 < 0.0008 < 0.0009 < 0.0012 Ru"'s < 0.0077 < 0.0068 < 0.0052 < 0.0057 13 Cs ' < 0.0011 < 0.0006 < 0.0011 < 0.0009 Cs137 < 0.0005 < 0.0008 < 0.0006 < 0.0007 Ce14' < 0.0016 < 0.0011 < 0.0010 < 0.0017 Ce"' < 0.0055 < 0.0049 < 0.0045 < 0.0054 CL-8 Be7 0.076 +/- 0.013 0.074 +/- 0.014 0.083 +/- 0.017 0.047 +/- 0.014 K'° < 0.0240 < 0.0220 < 0.0240 < 0.0240 Co"° < 0.0012 < 0.0012 < 0.0008 < 0.0006 Nb' 5 < 0.0013 < 0.0011 < 0.0011 < 0.0006 Zr' 5 < 0.0015 < 0.0012 < 0.0007 < 0.0013 Ru"10 < 0.0006 < 0.0013 < 0.0010 < 0.0006 Ru"'0 < 0.0086 < 0.0081 < 0.0054 < 0.0035 Cs"' < 0.0007 < 0.0005 < 0.0005 < 0.0008 Cs"7 < 0.0006 < 0.0004 < 0.0005 < 0.0006 Ce"1 < 0.0015 < 0.0015 < 0.0009 < 0.0016 Ce"' < 0.0049 < 0.0038 < 0.0048 < 0.0051 All I"' results were < 0.07 pCi/m'

-- page 92 of 119 --

GAMMA ISOTOPIC ACTIVITY IN AIR PARTICULATES FOR 2003" (continued)

SITE ISOTOPE 1ST QTR 2ND QTR 3"D QTR 4TH QTR CL-11 Be' 0.075 + 0.015 0.088 +/- 0.017 0.070 +/- 0.021 0.050 +/- 0.013 K40 < 0.0210 < 0.0220 < 0.0240 < 0.0250

< 0.0010 < 0.0010 < 0.0007 < 0.0006 Nbs < 0.0011 < 0.0012 < 0.0011 < 0.0010 Zr"s < 0.0017 < 0.0016 < 0.0015 < 0.0017 Ru103 < 0.0007 < 0.0008

< 0.0007 < 0.0011 Ru"'0 < 0.0070 < 0.0076 < 0.0059 < 0.0051 Cs"37

< 0.0005 < 0.0005 < 0.0006 < 0.0012 Cs'

< 0.0004 < 0.0004 < 0.0007 < 0.0005 Ce141 < 0.0020 < 0.0021 < 0.0017 < 0.0017 Ce 14' < 0.0027 < 0.0050 < 0.0046 < 0.0047 CL-15 Be7 0.078 +/- 0.015 0.067 +/- 0.015 0.059 +/- 0.015 0.070 +/- 0.019 K'° < 0.0230 < 0.0210 < 0.0250 < 0.0230 Go"° < 0.0012 < 0.0012 < 0.0008 < 0.0008 Nb"s < 0.0011 < 0.0014 < 0.0012 < 0.0006 Zr' 5 < 0.0022 < 0.0013 < 0.0011 < 0.0010 10 3 Ru

< 0.0008 < 0.0005 < 0.0006 < 0.0010 Ru10' < 0.0065 < 0.0073 < 0.0065 < 0.0063 13 Cs 37

' < 0.0006 < 0.0005 < 0.0006 < 0.0009 Cs'

< 0.0004 < 0.0004 < 0.0006 < 0.0006 Ce14' < 0.0021 < 0.0020 < 0.0016 < 0.0018 Ce14' < 0.0034 < 0.0024 < 0.0053 < 0.0059 CL-94 Be7 0.065 +/- 0.014 0.089 +/- 0.022 0.047 +/- 011 0.053 +/- 0.015 K'° < 0.0210 < 0.0230 < 0.0240 < 0.0240 Co06 < 0.0010 < 0.0012 < 0.0008 < 0.0006 Nb"s < 0.0014 < 0.0013 < 0.0012 < 0.0004 Zrs < 0.0013 < 0.0014 < 0.0013 < 0.0021 Ru103 < 0.0005 < 0.0013 < 0.0010 < 0.0005 Ru10s < 0.0072 < 0.0076 < 0.0062 < 0.0053 Cs"' < 0.0009 < 0.0005 < 0.0007 < 0.0008 Cs137 < 0.0007 < 0.0004 < 0.0005 < 0.0006 Ce"4' < 0.0017 < 0.0021 < 0.0013 < 0.0019 Ce"4 ' < 0.0047 < 0.0032 < 0.0059 < 0.0030

Control Location, all other locations are Indicator Locations.

All I... results were < 0.07 pCi/m'

-- page 93 of 119 -

2003 QUARTERLY TLD RESULTS (mRem I quarter net exposure)

LocatIon 1 ST QTR 2 ND QTR 3 RD QTR 4 TH QTR CL-1 22.1

0.5 17.7 +/- 0.9 20.4

2.2 18.0 +/- 2.1 CL-2 20.3+/-0.7 20.3+/-1.0 20.4+/-fi0.5 17.2+/-1.1 CL-3 19.8+/-0.7 19.3+/-0.6 21.8+/-fi4.9 A CL-4 21.1 +/- 1.3 18.6t +/-1.0 20.0t +/-1.1 19.3 +/- 1.0 CL-5 23.6+/-0.5 20.6+/-1.4 21.0+/-0.9 20.3 +/- 1.4 CL-6 20.6+/-fi0.4 18.4+/-0.6 18.4+/-1.8 17.4+/-0.3 CL-7 20.2 +/- 0.8 17.5t +/-1.2 18.8t +/-0.7 18.9s 0.9 CL-8* 20.5+/-1.3 21.8+/-1.1 19.9+/-0.4 19.3+/-2.0 CL-11I 19.8+/-1.6 18.9 +/- 0.8 20.4+/-0.4 22.5+/-0.1 CL-15 19.4+/-0.3 17.6+/-0.9 17.0+/-0.5 17.9*0.9 CL-22 21.1 +/-0.2 20.7 +/- 0.2 21.2 +/-0.5 20.6 *4.1 CL-23 20.4+/-t 1.5 22.8 +/- 2.3 20.0+/-1.8 19.7+/-2.4 CL-24 22.5+/-1.6 21.0+/-2.7 21.5+/-*0.7 20.2+/-0.5 CL-33 22.8+/-1.7 22.8+/-0.7 21.2+/-1.6 20.2+/-0.7 CL-34 22.2+/-1.1 21.0+/-2.1 21.4 +/- 1.1 20.3+/-1.3 CL-35 21.7 +/- 0.9 18.3t+/-0.5 19.2 +/- 1.1 18.4t+/-1.8 CL-36 21.6 +/- 1.5 20.4 +/- 0.8 20.6 +/- 1.2 19.9 +/- 1.5 CL-37 23.1 +/-2.2 AA 19.6+/-0.3 19.2+/- 1.6 CL-41 22.4 +/- 1.7 21.5 +/- 2.8 20.9 +/- 0.7 22.9 +/- 3.8 CL-42 21.3+/-1.6 19.7+/-1.0 21.4+/-1.4 19.2t+/-1.5 CL-43 24.0+/-0.7 21.9+/-1.2 21.8+/-1.7 20.9+/-2.8 CL-44 22.1 +/-1.1 20.7 +/- 0.8 22.0+/-1.5 19.4+/-1.7 CL-45 22.7+/-0.8 22.0+/-0.8 21.6+/-0.4 22.5+/-2.8 CL-46 19.4+/-1.2 19.4+/-0.4 19.7+/-1.6 20.4+/-1.9 CL-47 22.1 +/-2.0 20.8+/-1.0 21.0+/-1.7 21.6+/-0.9 CL-48 19.3+/-1.1 23.6+/-1.8 22.0+/-2.2 19.6+/-1.0 CL-49 22.4 +/- 1.0 26.4 3.0 22.5 +/- 1.3 20.1 2.9 CL-51 21.9+/-fi1.2 21.8+/-1.7 23.4 AAA 19.4 0.5 CL-52 23.0+/-1.1 24.1 +/-2.5 22.6*2.4 21.3+/-1.2 CL-53 20.2 +/- 0.3 19.9+/-1.3 20.8 +/- 1.8 19.8+/-2.1 CL-54 21.3+/-fi1.7 22.1 +/-t1.3 22.1 +/-1.2 19.5*1.6 CL-55 21.8t+/-0.5 24.3t+/-0.2 20.5 +/- 0.7 19.3

0.6 CL-56 22.1 +/-2.1 21.6 +/-2.3 21.8 +/- 2.5 25.0 +/-4.5 CL-57 21.8 1.5 23.7 +/- 2.0 20.4 +/- 0.4 22.9 +/- 2.7 CL-58 21.1 +/-0.9 21.8+/-0.4 21.0+/-0.9 22.2+/-1.5 CL-60 21.6+/-2.7 20.2+/-1.5 21.8+/-1.6 19.0+/-1.1 CL-61 22.3 +/- 0.6 21.2 +/- 2.1 20.1 +/- 2.0 22.9 +/- 2.8 CL-63 21.0+/-0.6 21.6+/-0.8 21.7+/-0.2 20.6 +/- 3.3 CL-64 22.1 +/-t0.7 20.3+/- 1.4 20.6 +/- 0.8 19.9+/- 1.0 CL-65 21.7+/-0.7 21.4+/-1.0 21.7+/-0.9 21.4*1.2 CL-74 20.1 +/-0.8 AA 18.9 +/-1.7 17.8 +/-2.0 CL-75 21.8+/-1.1 20.8*0.8 19.9 +/-0.9 20.1 +/-1.1 CL-76 21.9+/-1.9 20.6+/-0.9 22.5+/-0.7 19.0+/-0.4 CL-77 21.2+/-1.9 19.4+/-0.9 19.7+/-2.7 18.9+/-2.7 CL-78 20.4 +/- 0.4 22.1 +/- 0.3 20.6 +/- 1.1 20.6* 1.9

ODCM Control Location

^^ Supplemental Control Locations A No data to report from this location as the TLD was damaged.

A A Although a TLD was placed into the environment, upon retrieval at the end of the Quarter, the TLD was missing due to unauthorized personnel who frequent public access areas removing these REMP TLDs from their Sample Holders.

A A A There was no standard deviation reported by the vendor as only one (1) element of the TLD was read.

The other elements were damaged.

- page 94 of 119 -

2003 QUARTERLY TLD RESULTS (continued)

(mRem I quarter net exposure Location 1ST QTR 2ND QTR 3RD QTR 4TH QTR CL-79 22.1 +/-E1.8 20.9 +/- 1.8 20.5 :+/-0.9 22.3 +/- 3.0 CL-80 22.2 +/- 1.0 20.6 +/- 1.6 19.1 +/- 2.2 19.8 +/- 0.9 CL-81 21.3 +/- 1.3 20.9 +/- 1.4 20.8 +/- 0.6 18.6 +/- 0.6 CL-84 22.6 +/- 1.3 20.7 +/- 1.1 19.7 +/- 0.8 18.4 +/- 1.3 CL-90 19.3 +/- 1.4 20.2 +/- 1.1 21.9 +/- 2.2 15.7 +/- 0.8 CL-91 20.9 +/- 0.9 21.5 +/- 0.5 23.8 +/- 3.6 18.8 +/- 5.0 CL-97" 21.5 +/- 0.7 18.2 +/- 1.0 24.4 i 2.3 18.6 +/- 1.8 CL-99 19.3 +/- 0.6 17.6 +/- 0.8 20.6 +/- 1.2 16.7 +/- 1.4 CL-114" 20.8 +/- 1.1 19.8 +/- 1.9 23.3 i 4.9. 16.6 +/- 1.2

- Supplemental Control Locations

-- page 95 of 119

CL-13 SURFACE WATER ACTIVITY (pClIl)

Date 29 Jan 03 26 Feb 03 26 Mar 03 30 Apr 03 28 May 03 25 Jun 03 Collected Be 7 <24.8 < 23.9 < 26.3 < 22.0 < 28.5 < 21.1 K'4 < 77.3 < 76.8 < 57.7 <57.2 < 54.1 < 58.7 Mn54 < 3.1 < 1.7 < 1.4 < 3.1 <2.3 <2.0 Fesg <3.4 <5.5 <4.0 <5.0 <2.6 <2.7 Coss <2.4 <3.5 <2.3 <2.7 < 1.3 <2.7 Co60 <2.5 <4.2 < 1.5 < 1.8 <2.3 <2.3 Zn55 <6.4 <3.3. <3.8 <2.0 <3.2 <2.5 N b'5 <2.6 < 5.1 <2.3 <2.9 < 1.7 < 1.6 Zr"5 <5.5 <4.6 <3.9 <4.0 < 6.1 <2.2 Cs13 ' <4.0 <3.5 <2.2 <2.8 <2.6 < 1.9 Cs 137 <4.1 <5.3 <2.7 < 3.1 < 3.1 <2.3 Ba 140 < 12.6 < 24.5 < 12.8 < 18.4 < 10.0 < 12.8 La140 <2.6 <5.7 <2.8 < 1.7 < 1.9 <2.7 Ce1 4 ' < 24.7 < 30.5 < 31.5 < 31.4 < 24.4 < 28.0 Date 30 Jul 03 27 Aug 03 22 Sep 03 29 Oct 03 25 Nov 03 31 Dec 03 Collected Be7 < 17.5 <29.8 < 16.4 < 37.8 < 33.5 < 26.3 K'4 < 71.4 < 72.0 < 42.5 < 83.9 <110.6 <80.4 Mn54 <3.3 <2.8 <2.2 <3.9 <3.9 <2.8 Fe" <2.1 <4.0 <2.9 <5.6 <5.6 <5.8 Coss < 1.4 <2.4 < 1.9 <2.5 <4.9 <2.6 Co'0 <2.5 <3.3 <2.3 <3.2 <3.6 < 1.9 Zn" <3.5 <4.0 <3.3 <4.8 <3.6 <4.5 N b" <2.8 <4.0 <2.2 <4.3 <2.0 <4.3 Zr"s <4.4 <7.3 <4.4 <6.6 < 11.2 <5.7 Cs13' <2.5 <2.8 <2.0 < 3.1 <2.7 <3.4 cS137

<2.9 <3.8 <2.5 <4.3 <4.7 < 3.1 Ba 14' <9.7 < 11.3 < 12.8 < 20.5 < 26.0 < 17.1 La140 <4.0 <2.1 <3.0 <5.0 <6.7 <2.9 Ce 14 ' < 24.2 < 33.0 < 20.0 < 36.7 < 31.4 < 36.9

-- page 96 of 119 --

CL-90 SURFACE WATER ACTIVITY (pcil)

Date 29 Jan 03 26 Feb 03 26 Mar 03 30 Apr 03 28 May 03 25 Jun 03 Collected 1131 < 0.3 < 0.3 < 0.3 < 0.3 < 0.5 < 0.3 Be" < 53.4 < 18.3 < 34.0 < 47.6 < 37.5 < 18.6 0

K4 < 119.7 < 88.3 < 69.3 < 102.9 < 75.4 < 51.3 Mn54 <3.7 <4.0 < 1.7 <4.5 <2.7 <2.2 Fe'9 <5.4 <5.8 <5.3 <6.3 <3.8 <5.6 Coss <4.1 <2.3 <2.8 <3.5 <2.8 <2.4 Co"6

<6.5 <2.9 <3.6 <3.5 <4.3 <2.0 Zn"s < 10.3 < 5.1 <6.6 <5.4 <4.0 < 3.1 Nb"s <6.9 <4.2 <3.4 <4.4 <4.9 <2.5 Zr's <8.4 <8.6 <6.9 < 11.2 <4.7 <4.4 Cs137 <6.3 <3.4 <2.4 <3.6 <4.3 <3.2 Cs"7 < 5.1 <4.3 <5.0 <2.5 <3.6 <2.7 Ba 14 0 < 19.2 <9.9 < 18.5 < 13.8 < 16.4 < 14.7 La 140 <4.2 <2.5 <5.2 <3.3 <3.7 < 1.7 Ce 144 < 29.2 < 53.6 < 23.8 < 36.8 < 25.5 < 30.5 Date 30 Jul 03 27 Aug 03 22 Sep 03 29 Oct 03 25 Nov 03 31 Dec 03 Collected 1131 < 0.3 < 0.4 < 0.4 < 0.3 < 0.3 < 0.3 Be7 < 20.3 < 16.2 < 49.5 <32.8 < 32.7 < 26.2 K40 < 58.4 < 52.2 < 105.8 < 117.8 < 73.9 < 118.0 Mn54 <2.5 <2.0 <3.6 <3.5 < 1.8 <3.8 Feso <3.3 <2.3 <5.4 <5.6 <4.0 < 7.1 Coss <2.4 <2.2 <3.3 <3.2 <3.3 <3.2 Co'0 < 1.7 < 1.5 <3.8 <3.4 <2.5 <4.4 Zn"5 <3.0 <2.0 <4.5 <3.2 < 3.1 < 3.5 Nb9" <2.3 <2.1 <3.3 <3.8 <2.6 <5.2 Zr"s <4.8 < 3.1 < 10.6 <5.3 <4.7 < 11.1 Cs134 <2.6 <2.3 <6.0 <4.9 <3.7 <4.7 Cs 1 37 <2.8 <2.6 <4.8 <3.5 < 2.1 <5.0 Ba 140 < 12.0 < 13.3 < 37.0 < 21.3 < 11.0 <24.0 La"40 <3.6 <2.0 <7.7 <8.0 <3.4 <6.8 Ce 144 < 16.0 < 22.2 < 34.7 <45.4 < 27.5 < 51.6

- page97of119--

CL-91 SURFACE WATER ACTIVITY (pCIl)

Date 29 Jan 03 26 Feb 03 26 Mar 03 30 Apr 03 28 May 03 25 Jun 03 Collected Be 7 < 42.0 < 28.9 < 17.9 < 36.8 < 16.0 < 18.9 K40 < 87.7 < 59.4 < 44.7 <108.6 < 73.0 < 73.3 Mn"4 <2.4 <2.3 < 1.9 <5.5 <3.3 <3.0 Fe" <7.4 <4.2 <4.5 <5.0 <4.7 <4.4 Co"5

<2.5 <2.8 < 1.6 <2.6 <2.1 <2.8 Co06 <5.3 <3.5 < 1.6 <4.0 <2.7 < 1.5 Znes <4.0 <2.6 < 3.1 <5.7 <2.0 <4.6 Nb9s <4.0 <2.8 <2.6 < 5.1 <2.9 <3.0 zr" < 9.1 <7.0 <4.0 < 5.1 <5.4 <7.6 Cs'3 ' <4.4 <4.1 <2.2 <4.3 <2.2 <3.3 cs137

<5.7 < 1.9 <2.4 <4.9 < 3.1 <3.6 Ba"40 < 16.4 < 12.2 <6.8 < 18. <8.9 < 13.4 La140 <3.2 <3.5 <3.8 <7.6 <2.6 <2.8 Ce'44 < 21.9 < 26.3 < 20.8 < 40.6 < 22.9 < 20.2 Date 30 Jul 03 27 Aug 03 22 Sep 03 29 Oct 03 25 Nov 03 31 Dec 03 Collected Be" < 22.5 <26.1 < 30.2 <41.0 < 27.0 < 23.4 K40 < 51.2 < 84.9 < 67.0 <109.9 < 64.4 < 60.5 Mn"4 <2.4 <3.0 < 1.7 <5.3 <3.3 < 1.6 Fe" <4.0 < 6.1 < 1.9 <6.7 <3.0 <4.8 Cost

<2.8 <3.2 <2.8 <5.3 <2.9 <2.8 Co' 0 <2.7 <2.4 < 1.7 <4.1 <2.9 < 2.1 Zn" <4.6 <7.1 <2.8 < 5.1 < 3.1 <3.0 Nbs <3.0 <3.3 <2.4 <3.4 <2.2 <2.2 Zr" <3.5 <5.5 <6.5 < 10.6 <3.8 <3.2 Cs134 <2.7 <2.7 < 1.3 <3.8 <2.7 <2.0 Cs 1" < 1.8 <4.6 < 3.1 <4.8 <2.4 <2.3 Ba 14 0 < 10.4 < 18.9 < 13.3 < 17.7 <8.2 < 12.6 La 14 0 <2.7 <5.4 <2.6 < 10.9 < 2.1 < 20.0 Ce'44 < 26.8 < 25.3 < 20.7 <48.9 < 31.5 < 33.1

-- page98of119--

CL-99 SURFACE WATER ACTIVITY (pCl/l)

Date 29 Jan 03 26 Feb 03 26 Mar 03 30 Apr 03 28 May 03 25 Jun 03 Collected Be" < 40.4 -[a]- < 50.4 < 30.2 < 38.6 < 43.2 K40 < 82.0 -[a]- <110.4 <101.2 < 64.8 < 82.6 Mn 54 <3.0 -[a]- <4.6 <5.0 <2.1 < 3.1 Fes' <4.6 -[a]- < 11.6 < 12.7 < 3.5 <5.8 Cos <3.4 -[a]- <3.5 <2.7 <2.0 <2.2 Co'6 <5.7 -[a]- <5.3 <3.3 <2.1 <5.6 Zn'5 <5.9 -[a]- <7.2 <5.3 <3.0 <4.0 Nb"5 <3.6 -[a]- <4.9 <3.0 <2.9 <2.7 Zr'5 <8.5 -[a]- < 13.2 <13.5 <6.1 <5.3 Cs"'

cs134 <3.6 -[a]- <3.5 <3.4 <2.3 <2.4

<5.0 -[a]- <4.2 <5.5 <2.6 < 1.7 Ba'40 < 19.9 -[a]- < 31.2 <15.1 <12.8 < 18.4 La140 <4.5 -[a]- <7.9 <3.7 <2.6 <4.0 Ce144 < 21.7 -[a]- < 50.4 < 49.0 < 23.0 < 27.2 Date 30 Jul 03 27 Aug 03 22 Sep 03 29 Oct 03 25 Nov 03 31 Dec 03 Collected Be 7 < 28.9 <26.1 < 39.2 < 39.5 <41.4 < 62.1 K 40 < 68.1 < 60.6 < 72.5 < 70.9 <100.7 < 110.4 Mn 54 <2.5 <2.4 <2.7 <3.3 <4.9 <5.5 Fe" <5.0 <2.7 <3.9 <5.7 <8.5 <7.8 Co"s < 3.1 <2.5 <3.4 <2.5 <2.7 <3.7 Co06 < 1.6 <2.5 < 1.8 < 2.1 <4.7 <5.5 Zn'3 <2.6 <3.4 < 1.9 <6.4 <4.0 <6.4 Nbs <3.8 <2.1 <4.6 <4.8 <4.5 < 5.1 Zr"5 <6.0 <6.0 <4.8 <7.6 <9.2 <8.9 cS134 <2.9 < 1.5 <3.5 <4.2 < 7.0 < 6.0 cs13? <4.2 <2.2 <4.1 <2.8 <6.8 <5.6 Ba140 <8.7 <8.6 <8.2* < 25.7 < 28.8 < 17.2 La140 <3.7 <2.5 <3.0 <8.5 <3.5 <6.9 Ce144 < 27.7 < 22.5 < 28.1 < 32.7 < 44.0 < 51.0

[a] Due to the frozen conditions found at the North Fork Creek, a composite water sample from CL-99 was unavailable for February.

-- page 99 of 119 --

SURFACE WATER and DRINKING WATER QUARTERLY TRITIUM COMPOSITE (pCIII)

Quarter CI-13 CI-14 CI-90 CI-91 CI-99 it < 151 - < 151 < 151 < 151 < 151 2nd < 162 < 162 < 162 < 162 < 162 3rd < 161 < 161 < 161 < 161 < 161 4th < 161 < 161 < 161 < 161 < 161 CL-7D WELL WATER ACTIVITY (pCIII)

Date 26 Mar 03 25 Jun 03 22 Sep 03 31 Dec 03 Collected H3 < 133 < 162 < 165 < 161 Be7 < 37.2 < 36.7 < 19.4 < 25.7 K40 < 69.3 <119.2 < 70.8 < 63.3 Mn54 <3.2 <4.1 <2.3 <2.7 Fe" <3.5 <8.2 <6.7 <5.6

<2.6 <3.9 < 1.6 < 1.6 Coso

<3.5 <4.8 <2.6 < 1.8 Zn"5 < 5.1 <4.9 < 1.8 <3.3 Nbss < 3.1 <3.9 <3.0 <2.3 Zr"5 <6.0 <5.7 < 10.4 <4.1

<3.9 <4.5 <3.9 < 3.1 Cs137

<3.5 <6.2 <2.7 <2.8 Ba"'

Ba 140 < 20.2 < 13.2 < 18.8 < 15.9 La 140 <5.8 <7.3 <2.5 <3.8 Ce 144 < 32.4 < 35.5 < 31.0 < 27.3

-- page 100 of 119 --

CL-12 UNTREATED WELL WATER ACTIVITY (pCIII)

Date 26 Mar 03 25 Jun 03 22 Sep 03 31 Dec 03 Collected H3 < 133 < 162 < 165 < 161 Be" < 20.4 <29.4 <21.3 < 36.9 K'4 < 58.2. < 89.4 < 60.5 < 79.1 Mn 54 <2.0 <2.3 <2.2 <3.3 Fe" <4.4 <3.8 <3.0 <4.6 Coss <2.0

<2.2 <2.5 < 1.7 Coso <2.7 < 1.4 <2.4 < 1.8 Zn' 5 <4.1 <3.7 <2.3 <5.5 Nb's <4.5 *<3.5 <2.6 <2.6 Zr"5 <9.0 <3.3 <5.5 <7.2 Cs"' <2.5 < 3.1 <2.5 <2.5 cs137

<4.0 <3.4 < 1.7 <2.9 Ba 1 40 < 11.4 < 16.5 < 23.5 < 17.9 La140 <3.9 <2.5 < 3.1 <2.2 Ce'44 < 22.6 < 38.5 < 25.4 <33.4 CL-12 TREATED WELL WATER ACTIVITY (pcIII)

Date 26 Mar 03 25 Jun 03 22 Sep 03 31 Dec 03 Collected H3 < 133 < 162 < 165 < 161 Be' < 41.3 < 31.2 <34.3 < 23.4 K40 < 87.1 < 102.3 < 76.6 < 60.6 Mn54 <4.0 <4.2 <2.9 <2.3 Fe59 <2.3 <7.4 <2.6 <5.0 Cost <3.5 <3.0 <2.7 < 1.2 Co0° <3.9 <2.9 <2.3 < 1.9 Zn65 <4.8 < 6.1 <3.5 < 1.8 Nb's <4.5 <5.2 <2.2 <2.9 Zr' 5 < 11.0 < 12.9 < 6.1 <2.8 Cs"' <4.1 <4.5 <3.9 <2.5 Cs"' <2.8 <4.8 <2. <2.1 Ba140 < 19.9 < 21.8 < 22.7 < 14.7 La140 <6.4 <3.5 <2.0 <2.4 Ce'44 < 32.9 <48.4 < 35.5 < 20.1

-- page 101 of 119 -

CL-14 DRINKING WATER ACTIVITY (pcIII)

ClDate 29 Jan 03 26 Feb 03 26 Mar 03 30 Apr 03 28 May 03 25 Jun 03 Collected Gross Beta 1.0 i 0.5 1.4 i 0.5 < 0.9 1.4 i 0.5 1.1 +/- 0.5 1.4 +/- 0.5 Be7 < 48.8 < 44.5 < 46.5 < 44.7 < 35.0 < 36.6 K'0 <99.1 <83.8 <118.1 <85.7 <75.4 <78.1 Mn54 < 4.6 < 2.1 < 5.0 < 4.2 < 3.6 < 2.3 Fest < 3.2 < 4.6 < 4.3 < 4.3 < 3.8 < 4.6 Coss < 5.0 < 1.3 <4.5 <4.2 <2.4 < 1.6 Co'° < 3.1 < 2.2 < 3.9 < 3.6 < 3.8 < 2.6 Zn"5 < 9.2 < 7.3 < 6.9 < 9.4 < 6.5 < 2.1 NbW5 <3.7 <3.5 <4.1 <3.2 <2.7 <3.1 Zr95 < 8.2 < 8.6 < 10.1 < 7.6 < 7.4 < 7.4 Cs134 < 5.0 < 4.1 < 5.6 < 3.5 < 1.7 < 4.1 Cs" 7

< 5.2 < 3.9 < 4.9 < 3.4 < 4.0 < 3.9 1

Ba 40 < 25.1 < 13.0 < 27.8 < 22.6 < 15.7 < 15.2 La 140 < 4.5 < 1.7 < 6.7 < 2.9 < 3.8 < 3.2 Ce144 < 45.5 < 37.2 < 44.0 < 38.5 < 29.9 < 21.6 Date 30 Jul 03 27 Aug 03 22 Sep 03 29 Oct 03 25 Nov 03 31 Dec 03 Collected Gross Beta 0.9 +/- 0.5 1.2 +/- 0.5 1.4 i 0.5 1.1 i 0.4 2.6 i 0.5 2.1 +/- 0.6 Be7 < 37.8 < 29.5 < 31.9 < 51.3 < 43.3 < 32.9 K40 < 77.4 < 75.6 < 111.4 < 106.5 < 110.3 < 112.3 Mn54 < 2.3 < 3.2 < 6.1 < 4.0 < 3.8 <5.8 Fe" < 2.3 < 4.2 < 7.3 < 4.4 < 10.8 < 6.5

Cos < 1.7 < 1.8 < 3.8 < 3.8 < 4.7 < 6.1 Co"° < 1.7 <3.0 <4.1 < 3.8 <4.0 <6.5 Zn"5 < 1.9 < 2.5 < 6.3 < 4.9 < 7.4 < 9.0 Nb" < 2.1 < 3.2 < 5.7 < 4.9 < 5.5 < 4.5 Zrs < 7.2 < 4.2 < 7.7 < 6.7 < 11.6 < 8.9 Cs" 3 < 3.5 < 3.2 < 4.5 < 5.3 < 5.3 < 4.3 Cs" 7

< 1.8 < 1.8 < 4.3 < 5.5 < 4.3 < 4.1 1

Ba 40 < 10.4 < 11.1 < 31.0 < 16.1 < 19.3 < 30.4 La14' < 2.5 < 1.4 < 3.6 < 6.9 < 6.4 < 7.3 Ce144 < 21.3 < 35.0 < 45.2 < 45.9 < 56.7 < 43.0

-- page 102 of 119 --

CL-116 MILK ACTIVITY - (Control)

(pCIII)

Date 29 Jan 03 26 Feb 03 26 Mar 03 30 Apr 03 14 May 03 Collected "31 < 0.3 < 0.6 < 0.4 < 0.4 < 0.4 Be" < 17.9 < 26.6 < 34.7 < 32.5 < 38.6 40 1,183 +/- 151 K 1,331 i 111 1,310+/- 106 1,217+/- 167 1,109+/- 160 Mn 5 4 <3.7 <3.5 <5.9 <4.5 <5.5 Fe" <3.8 <8.4 < 13.0 <5.5 <5.2 cost <2.3 < 1.9' < 5.1 <3.7 <3.3 Co'° < 3.1 < 3.1 < 5.1 <4.1 < 3.1 Zn's < 6.1 <7.3 < 10.9 <5.8 <6.6 Nb's <3.7 < 1.8 <4.5 <5.4 <2.6 7Zr' <5.9 <4.9 <9.6 <8.3 <9.4 13 Cs ' <2.9 <3.8 <4.8 <5.3 <2.8 Cs"' <4.4 <3.3 <6.7 < 5.1 < 5.1 Ba 1 4 0 <6.4 < 12.9 < 30.8 < 14.0 < 17.6 La14 0 <2.4 <3.6 <6.9 < 3.1 <3.4 Ce1 4 ' < 25.8 < 31.3 < 53.8 < 28.5 < 26.5 Date 28 May 03 11 Jun 03 25 Jun 03 09 Jul 03 23 Jul 03 Collected 1131

< 0.4 < 0.4 < 0.4 < 0.3 < 0.3 Be' < 23.0 < 63.1 < 48.7 < 39.9 < 52.2 K4" 1,210 +/- 122 1,251 +/- 167 1,332 +/- 169 1,203 +/- 165 1,559 +/- 193 5

Mn ' <3.9 <5.3 <3.9 <6.6 <5.4

-Fess9 <8.8 < 10.6 <8.9 < 10.1 < 12.2 Coss <3.4 <2.6 <3.6 <4.7

<5.5 Co'0 <3.4 <4.1 <6.6 <6.5 <4.4 Zn"s < 11.2 < 10.7 < 12.1 < 11.9 < 14.3 Nb's <4.0 <2.7 <4.2 <4.9 <3.3 Zr", <7.6 < 10.8 < 11.2 < 11.8 < 15.6 Cs"' <4.4 <3.7 <4.2 < 5.1 <6.2 13 Cs ' <4.5 <5.8 <6.7 <4.3 <5.8 Ba"1 < 14.0 < 11.7 <24.9 < 14.7 < 27.1 La140 <3.0 <2.9 <3.5 <6.0 <3.8 Ce 14' < 27.4 <41.2 < 48.1 < 48.3 < 39.4

-- page 103 of 119 --

CL-116 MILK ACTIVITY - (Control) (continued)

Date 17 Sep 03 01 Oct 03 06 Aug 03 20 Aug 03 03 Sep 03 Collected i131

< 0.3 < 0.5 < 0.2 < 0.3 < 0.4 Be" < 25.5 < 35.8 < 27.3 < 38.2 < 62.0 K40 1,434 +/- 124 1,434+/- 117 1,235+/- 111 1,155+/- 117 1,349+/- 178 Mn 5 4 <2.0 <4.1 <2.9 <3.6 <6.8 Fe 5" <4.1 < 8.1 <8.0 <8.7 < 10.4 cost < 2.1 <4.0 <2.2 <4.3 <3.6 Co"° <4.3 <3.2 <3.8 < 1.3 <5.8 Zn's <5.7 <5.1 <9.4 <6.0 < 14.1 Nbs <3.5 <4.9 <3.7 <3.0 <4.9 Zr"5 <4.8 <7.4 <6.7 <5.6 <8.4 cs 1

34 <2.5 <2.2 <3.6 <4.6 <8.2 cs 1 37

<2.7 <3.0 <3.2 <3.7 <4.2 Ba 1 4 0 < 11.0 < 12.4 < 14.6 < 12.4 < 28.0 La"1 < 1.4 <4.3 < 12.5 <2.0 < 7.1 Ce1 4 ' < 36.0 < 33.9 < 25.0 < 32.0 < 43.5 Date 15 Oct 03 29 Oct 03 25 Nov 03 31 Dec 03 Collected 1131

< 0.3 < 0.2 < 0.5 < 0.3 Be 7 < 16.0 < 27.6 < 57.1 < 53.6 K4° 1,196+/- 104 1,282 +/- 162 1,233 +/- 166 1,220 +/- 163 M n5" <3.4 <5.7 <6.7 <7.6 Fe" <7.5 < 13.7 < 11.7 < 15.9 Cosa <2.0 <3.4 <4.8 <4.4 Co0° < 1.5 <4.8 <3.7 <6.8 Zn"s <3.7 < 11.6 <7.7 < 12.7 Nbs" <3.9 <3.6 <5.0 <4.4 Zr"s <4.7 <7.7 <9.9 < 12.5 13 Cs ' <3.0 <4.7 <5.5 <8.6 Cs137 <3.8 <5.2 <7.3 <6.5 Ba 140 <9.2 < 16.4 < 27.4 < 17.9 La140 <2.1 <4.1 <4.2 < 7.1 Ce14' < 27.1 <46.7 <40.4 < 47.6

-- page 104 of 119 --

CL-I GRASS ACTIVITY (pCI/g wet)

Date 30 Apr 03 14 May 03 28 May 03 11 Jun 03 25 Jun 03 Collected Be7 3.32 +/- 0.38 1.30 +/- 0.28 1.04 +/- 0.30 0.87 +/- 0.28 0.86 +/- 0.17 K'° 2.78 +/- 0.46 5.9 +/- 0.53 14.24 +/- 0.88 4.91 +/- 0.64 < 6.76 +/- 0.52 Mn 54 <.017 <.014 < .026 <.013 <.010 Fe 59 < .040 <,.036 < .031 < .025 <.018 Co9 ' <.014 <..015 <.019 <.015 <.016 Co'° <.017 <.014 <.015 <.017 <.014 Zn65 < .024 <.021 < .046 < .032 <.017-Nb95 <.007 <.012 <.015 <.018 <.017 Zr' 5 <.012 < .028 < .040 < .044 <.011 1131 < .029 < .029 < .029 < .034 < .026 Cs"'

Cs134

< .020 < .021 < .028 <.011 <.015 cs137

<.019 <.010 < .029 <.017 <.015 Ba 140 < .059 < .054 < .057 < .099 < .096 La" 0 <.016 < .009 <.011 <.013 <.013 Ce14 ' < .099 <.118 < .225 < .080 < .093 Date 09 Jul 03 23 Jul 03 06 Aug 03 20 Aug 03 03 Sep 03 Collected Be7 0.84 +/- 0.25 1.37 +/- 0.35 1.45 +/- 0.20 0.76 +/- 0.18 0.69 +/- 0.15 K' 0 3.92 +/- 0.67 5.42 +/- 0.66 5.31 +/- 0.42 4.88 +/- 0.41 4.53 +/- 0.39 Mn 54 < .021 <.017 < .021 <.010 <.010 Fe"9 < .048 < .064 < .045 < .032 < .029

<.016 <.016 <.011 <.011 < .009 Co'° <.019 < .020 <.013 <.014 < .008 Zn's < .033 < .044 < .026 < .021 <.017 Nb's <.014 <.014 <.015 <.012 <.013 Zr's < .023 < .036 < .030 < .031 < .021 131

< .031 < .041 < .032 <.015 < .020 13 Cs ' < .023 < .027 <.015 <.014 <.013 Cs1 37 < .027 < .022 <.019 <.017 <.013 Ba"14 < .085 <.127 < .056 < .054 < .048 La140 < .027 < .026 <.011 < .006 < .007 Ce 14' <.190 <.153 < .095 < .090 < .078

-- page 105 of 119 --

CL-1 GRASS ACTIVITY (continued)

Date 17 Sep 03 01 Oct 03 15 Oct 03 29 Oct 03 Collected Be? 0.57 +/- 0.27 1.39 +/- 0.26 2.03 +/- 0.28 2.14 i 0.27 K4 0 5.41 i 0.73 4.91 +/- 0.44 3.98 +/- 0.49 5.80 +/- 0.52 Mn64 <.012 <.012 <.013 <.019 Fe59 < .032 < .034 < .031 < .024 Co58 <.014 <.015 <.017 < .007 Co'0 < .021 <.014 < .009 <.015 Znes < .058 <.029 < .040 < .028 Nb9" <.019 <.017 <.014 <.015 Zr'5 < .036 < .025 < .032 < .041 1131 < .029 < .027 < .024 < .026 Cs 1 3 4 <.014 <.016 <.015 <.014 1 37 Cs

<.017 <.016 <.016 <.016 Ba140 <.110 < .063 < .087 < .084 La 1 40 <.016 < .007 <.013 < .008 Ce 14 4 <.103 <.118 <.121 <.149

-- page 106 of 119 --

CL-2 GRASS ACTIVITY (pCI/g wet Date 30 Apr 03 14 May 03 28 May 03 11 Jun 03 25 Jun 03 Collected Be" 0.70 +/- 0.14 1.96 +/- 0.40. 0.48 +/- 0.20 1.46 +/- 0.23 1.27 +/- 0.24 K40 6.17 +/- 0.38 8.07 +/- 0.78 5.97 +/- 0.66 6.61 +/- 0.53 6.56 +/- 0.54 Mn"4 <.013 < .026 <.015 <.014 <.013 Fe" < .025 < .059 < .020 <.018 < .037 Coss <.011

<.013 < .021 <.012 <.019 Cot"

< .008 < .030 <.015 ' .015. <.015 Zn65 < .032 < .030 < .042 < .033 < .022 Nb' 5 <.010 < .029 <.012 <.018 <.015 Zr"s < .020 < .037 < .035 < .039 < .022 131

< .031 < .033 < .024 < .025 <.019 Cs 134 <.016 < .030 < .026 <.014 < .022 Cs137 <.017 < .031 < .020 <.013 <.011 1

Ba 40 < .059 <.120 < .077 < .061 < .074 La 1 40 < .006 <.012 <.018 < .009 < .008 Ce'44 < .091 <.176 <.111 <.134 . <.103 Date 09 Jul 03 23 Jul 03 06 Aug 03 20 Aug 03 03 Sep 03 Collected Be7 0.60 +/- 0.24 2.58 +/- 0.50 1.62 +/- 0.22 0.53 +/- 0.25 1.37 +/- 0.30 K40 4.38 +/- 0.63 6.26 +/- 0.81 8.49 +/- 0.56 7.39 +/- 0.54 4.69 +/- 0.66 Mn"S <.018 < .031 .<.015 <.011 <.014 Fe" <.045 < .057 < .035 < .033 < .030 Co"8 co so < .021 < .022 < .009 <.015 <.013 Co'0 <.016 < .024 <.013 <.012 <.012 Zn " < .023 < .068 < .032 < .042 < .046 Nbs < .024 < .030 <.011 <.017 < .020 Zr"5 < .038 < .066 < .029 < .034 < .030 1131

< .031 < .058 < .021 < .030 < .028 Cs134 < .025 < .034 <.015 <.017 < .021 Cs13 ' <.019 < .033 <.016 <.017 <.019 Ba140 < .071 <.166 < .065 < .062 < .064 1

La 40 < .020 < .025 < .006 <.010 <.014 Ce 144 <.140 < .213 <.102 <.106 < .084

-- page 107 of 119 --

CL-2 GRASS ACTIVITY (continued)

Date 17 Sep 03 01 Oct 03 15 Oct 03 29 Oct 03 Collected Be" 1.72 +/- 0.25 0.51 +/- 0.22 1.25 +/- 0.26 2.52 +/- 0.28 K40 14.10 +/- 0.71 4.99 +/- 0.68 5.32 +/- 0.50 5.86 +/- 0.50 Mn54 < .020 <.017 <.017 <.012 Fe" < .039 < .049 < .030 < .036 Co05 <.015 <.013 <.017 <.010 0

Co6 <.015 < .024 < .021 <.012 Znes < .034 < .046 < .043 < .024 Nb95 <.015 <.015 <.017 <.012 Zr's <.030 < .029 < .036 < .042 "131 <.030 <.019 < .022 < .026 Cs1134 3

< .022 < .026 < .023 <.018 Cs 7

< .029 <.014 <.016 <.019 Ba140 < .078 <.106 < .083 < .044 La 14 0 <.012 <.011 < .007 <.011 Ce144 <.100 <.140 <.105 <.126

-- page108of119--

CL-8 GRASS ACTIVITY (pCiIg wet)

Date 30 Apr 03 14 May 03 28 May 03 11 Jun 03 25 Jun 03 Collected Be7 0.71 +/- 0.30 1.43 +/- 0.26 0.57 +/- 0.17 0.68 +/- 0.16 0.66 +/- 0.22 K40 6.20 +/- 0.72 11.73 +/- 0.68 5.94 +/- 0.47 5.29 +/- 0.49 7.23 +/- 0.73 Mn 54 <.017 <.015 <.012 <.012 <.017 Fess < .043 < .023 < .026 < .030 < .036 co"b

< .025 <.015 < .009 <;014 <.014 Coto

< .022 <.019 *< .008 <.015 <.018 Zn65 < .039 < .035 < .036 < .033 < .032 Nb' 5 <.014 < .018 <.019 <.015 < .022 Zr' 5 < .058 < .020 <.013 < .035 < .036 i131

< .025 <.016 <.011 < .020 < .031 Cs13 1 4 < .030 < .021 <.013 <.014 < .020 Cs 3T

< .020 <.016 < .009 <.015 < .022 Ba"40 < .086 < .076 < .065 < .065 < .079 La1 4 0 < .021 <.011 < .007 <.012 <.014 Ce'44 <.139 <.121 < .095 <.121 < .096 Date 09 Jul 03 23 Jul 03 06 Aug 03 20 Aug 03 03 Sep 03 Collected Be 7 1.33 +/- 0.29 2.51 +/- 0.48 1.84 +/- 0.21 < 0.25 2.68 +/- 0.38 0

K4 5.00 +/- 0.71 6.95 +/- 0.84 7.11 +/- 0.53 7.45 +/- 0.68 6.27 +/- 0.76 Mn"4 <.015 <.016 <.016 < .020 <.018 Fes9 < .036 < .064 < .027 < .055 < .027 Co"8 cost <.012 < .026 <.011 <.018 < .028

< .009 < .024 <.010 < .022 < .022 Znes < .025 < .053 < .034 < .053 < .058 Nb's <.014 < .024 <.017 <.017 <.019 Zr"s < .032 <.046 < .021 < .039 < .036 1131

< .025 <.048 <.015 < .041 < .035 Cs 134 <.016 < .025 <.014 < .027 < .028 Cs 137 <.019 < .027 <.018 < .025 < .024 14 0 Ba <.118 < .095 <.090 < .092 <.121 1

La 40 <.017 < .029 <.014 < .024 < .029 1

Ce 44 < .088 <.139 <.128 <.193 < .217

-- page 109 of 119--

CL-8 GRASS ACTIVITY (continued)

Date 17 Sep 03 01 Oct 03 15 Oct 03 29 Oct 03 Collected Be" 0.72 +/- 0.26 1.17 +/- 0.25 3.39 +/- 0.41 0.57 +/- 0.23 K40 7.54 +/- 0.76 6.00 +/- 0.65 5.44 +/- 0.70 4.75 +/- 0.63 Mns4 < .022 < .021 <.019 < .027 Fe" < .031 < .026 < .033 < .030 C058 cost * <.019 <.017 <.017 <.017

< .024 <.019 < .021 <.018 Zns < .064 < .050 < .035 < .022 Nb' 5 < .022 <.019 < .023 < .025 Zrs < .035 < .044 < .040 < .039 I 131 < .025 < .029 < .031 < .031 Cs"' < .028 < .024 <.012 <.019 Cs"7 < .023 <.015 < .026 < .022 Ba14 ' <.124 < .093 <.129 < .072 1ar40 < .025 <.014 <.017 <.016 Ce14 ' <.120 <.159 <.127 <.114

-- page 110 of 119 --

CL-116 GRASS ACTIVITY (Control)

(pClIg wet)

Date 30 Apr 03 14 May 03 28 May 03 11 Jun 03 25 Jun 03 Collected Be' 0.63 i 0.16 0.75 +/- 0.28 <0 .27 0.97 +/- 0.21 1.47 +/- 0.19 K40 5.5 0 +/- 0.42 5.54 +/- 0.67 4.79 +/- 0.61 3.85 +/- 0.48 5.06 +/- 0.33 Mn 54 < .009 <.014 <.013 <.011 <.011 Fe" < .022 < .044 <.018 < .025 < .027 Cos < .009 <.016 <.017 <.013 < .005 Co"° <.014 < .025 < .020 <.018 <.011 Zn"s < .022 < .055 < .031 <.018 < .023 Nbs <.012 < .020 <.015 <.015 <.013 Zr"s < .022 < .047 <.018 < .034 < .020 1131

<.013 < .030 < .026 <.016 < .021 Cs'34 <.011 < .024 <.019 <.018 <.010 Cs 13 ' <.011 <.019 <.018 <.015 <.011 Ba 1 40 < .050 < .085 < .062 <.049 < .064 La 1 40 < .005 <.019 <.013 <.016 < .009 Ce 144 < .087 <.137 <.150 <.109 < .088 Date 09 Jul 03 23 Jul 03 06 Aug 03 20 Aug 03 03 Sep 03 Collected Be" < 0.20 4.67 +/- 0.36 2.00 +/- 0.29 0.63 +/- 0.21 0.56 +/- 0.19 K40 3.37 +/- 0.51 4.49 +/- 0.45 5.09 +/- 0.59 7.51 +/- 0.59 4.81 +/- 0.49 Mn"4 <.013 <.012 <.015 <.010 <.015 Fes9 < .038 < .021 < .028 < .027 <.018 Coss <.010 <.009 < .007 <.010 < .009 CoG° <.013 <.012 < .020 <.013 < .009 Zn"s <.012 < .025 < .021 < .031 < .022 Nb9s <.013 <.018 *< .011 <.017 <.014 zr" < .047 <.018 < .031 < .035 < .023 I131 < .020 < .025 < .029 < .026 < .022 Cs 134 <.018 < .016 <.013 <.012 <.017 Cs137 < .021 <.014 <.015 <.017 <.010 BaI40 < .066 <.046 <.092 < .044 < .058 La 140 <.014 < .008 <.012 <.013 <.015 Ce 144 < .091 <.136 < .073 < .097 <.120

-- page 111 of 119 --

CL-116 GRASS ACTIVITY (Control) (continued)

Date 17 Sep 03 01 Oct 03 15 Oct 03 29 Oct 03 Collected Be" 0.64 +/- 0.32 1.16 +/- 0.22 4.19 +/- 0.36 3.57 +/- 0.40 K40 9.95 +/- 0.87 6.30 +/- 0.50 5.39 +/- 0.55 5.28 +/- 0.60 Mn54 < .023 <.015 <.014 <.025 Fese < .035 < .033 <.025 <.040 Coss

< .020 <.011 <.012 <.017 Co'° < .026 <.010 <.014 <.012 Zn85 < .075 < .027 <.017 <.020 Nbss < .023 <.017 <;017 < .023 Zr"s < .046 < .020 <.042 <.023 1131 < .034 < .023 <.028 <.022

<.018 <.013 <.014 <.026 Cs13 ' <.016 <.017 <.012 <.017 Ba 140 <.090 < .068 <.075 <.048 La 1 40 <.014 < .009 <.013 <.017 Ce 144 <.171 < .081 <.155 <.133

-- page 112 of 119 --

CL-114 GREEN LEAFY VEGETABLE ACTIVITY (Control)

(pCitg wet)

Date 25 Jun 03 25 Jun 03 25 Jun 03 30 Jul 03 30 Jul 03 Collected Sample Type Lettuce Swiss Chard Cabbage Lettuce Swiss Chard Gross Beta 2.63 +/- 0.08 7.18 +/- 0.18 2.32 +/- 0.07 6.16 +/- 0.14 4.24 +/- 0.10 7

Be <.15 < .17 <.14 < .22 <.16 K40 3.10 +/- 0.46 7.57 +/- 0.64 - 2.85 +/- 0.45 5.08 +/- 0.61 5.17 +/- 0.46 Mn54 <.010 <.016 <.010 <.016 <.013 Fe" < .033 < .024 < .024 <.017 < .032 Coss <.016 < .021 < .067 .< .014 <.014 Co'° < .009 <.014 < .009 <.012 < .008 Zn " < .038 < .036 < .028 < .045 < .036 Nb'5 <.011 <.017 <.014 <.019 <.019 Zr "

Nb"' < .033 < .039 < .027 < .047 < .022 1131 < .021 < .035 < .020 < .032 < .022 Cs" 34 <.015 <.013 <.016- < .025 <.016 Cs' <.011 <.018 <.010 <.019 <.010 Ba140 < .080 < .089 < .074 < .095 < .083 La"140 <.014 <.012 <.018 <.011 <.011 Ce"' < .058 <.131 < .098 < .132 < .087 Date 30 Jul 03 27 Aug 03 27 Aug 03 22 Sep 03 22 Sep 03 Collected Sample Type Cabbage Swiss Chard Cabbage Swiss Chard Cabbage Gross Beta 3.18 +/- 0.07 2.89 +/- 0.07 2.43+ +/- 0.05 3.40 +/- 0.07 3.63 +/- 0.09 Be7 <.11 < 0.11 < 0.07 < .22 <.13 K40 3.35 +/- 0.42 3.95 +/- 0.31 2.99 +/- 0.23 3.73 +/- 0.56 3.63 +/- 0.41 Mn 4 5

<.012 < .009 < .005 < .020 <.012 Fe" < .021 < .021 < .007 < .023 < .030 CoU < .009 <.011 <.007 <.011 <.012 CoG° < .008 <.010 <.006 <.016 < .009 Zns < .020 < .021 < .009 < .031 < .020 5

Nb9 <.016 <.010 < .006 <.014 <.012 Zr's -< .023 <.011 < .009 < .023 < .030 1131

<.015 <.016 < .007 < .020 < .028 Cs'"' < .008 < .006 < .004 <.013 <.015 Cs'3 7 <.012 < .008 < .006 <.016 <.015 Ba'40 < .058 < .032 < .024 < .077 < .099 1

La 40 < .009 <.010 < .006 <.019 <.010 Ce'44 < .046 < .050 < .047 <.117 < .063

-- page 113 of 119 --

CL-115 GREEN LEAFY VEGETABLE ACTIVITY (pCI/g wet)

Date Collected 25 Jun 03 25 Jun 03 25 Jun 03 30 Jul 03 Sample Type Lettuce Swiss Chard Cabbage Lettuce Gross Beta 4.80 i 0.14 8.37 +/- 0.23 4.41 +/- 0.14 4.54 +/- 0.11 Be" <.14 < 0.22 < 0.10 0.40 +/- 0.20 K40 4.80 i 0.46 6.97 +/- 0.78 4.67 +/- 0.41 3.29 +/- 0.50 Mn 54 <.012 <.018 < .009 <.012 Fe'9 <.018 < .042 <.013 <.017 Cosa <.012

< .009 <.019 < .006 Co"O <.010 <.015 < .007 < .009

< .029 < .030 < .027 < .028 Nb' 5 <.014 <.017 <.014 <.017 Zr's < .030 <'.023 < .032 <.015 1131 <.017 < .026 <.019 < .024 Cs"4 <.010 <.018 <.014 <.010 Cs"7 <.015 <.017 <.011 <.015 Ba 140 < .054 < .081 < .069 < .067 La1 40 < .007 <.017 < .007 <.014 Ce 144 < .081 <.105 < .050 < .073 Date Collected 30 Jul 03 30 Jul 03 27 Aug 03 22 Sep 03 Sample Type Swiss Chard Cabbage Cabbage Cabbage Gross Beta 6.49 +/- 0.14 2.41 +/- 0.05 3.22 +/- 0.07 3.45 +/- 0.07 Be' 0.51 +/- 0.21 < 0.10 < 0.10 <0.13 K40 5.70 +/- 0.66 1.85 +/- 0.26 2.50 +/- 0.33 3.48 +/- 0.57 Mn"4 <.012 < .007 <.015 <.016 Fe" < .047 <.012 < .031 < .034

< .008 < .006 <.012 <.016 Co'° <.019 < .009 <.013 < .024 Znes < .041 <.018 < .022 < .022 N b'5 <.018 <.010 <.010 < .008 Zr's < .032 <.018 < .020 < .038 1131 < .023 <.016 <.014 < .046 Cs"4 <.015 <.011 <.011 <.011 Cs"' <.015 <.013 <.009 < .022 1

Ba 40 <.102 < .042 < .053 <.116 La 1 40 <.013 < .005 < .009 <.016 Ce 144 <.104 < .051 < .087 < .092

-- page114 of119 --

CL-117 GREEN LEAFY VEGETABLE ACTIVITY (pCI/g wet)

Date 25 Jun 03 25 Jun 03 25 Jun 03 30 Jul 03 30 Jul 03 Collected Sample Swiss Swiss Lettuce Cabbage Lettuce Type Chard Chard Gross Beta 2.62 i 0.07 8.23 +/- 0.22 2.69 +/- 0.07 6.16 +/- 0.12 5.16 +/- 0.10 Be' < 0.18 < 0.36 < 0.20 0.29 +/- 0.14 < 0.22 K' 0 2.72 +/- 0.43 8.66 +/- 0.61 2.08 +/- 0.49 5.12 +/- 0.48 5.53 +/- 0.61 Mn 54 < .007 <.012 <.017 <.010 <.016 Fess < .020 < .033 < .027 < .035 <.019 Coss

< .015 <.012 <.010 < .008 <.016

<.014 <.014 <.013 <.011 < .022 Zn 5 <.018 <.015 < .024 < .027 < .035 Nb's <.013 <.010 <.015 <.012 < .008 Zr95 < .029 < .026 < .034 < .024 < .040 1131 < .030 <.019 < .030 <.017 < .027

<.019 < .020 < .020 <.015 <.018 Cs"3' <.016 <.014 <.015 <.011 <.018 Ba1 4 0 < .088 < .056 < .079 <.043 < .065 La14 0 <.010 <.013 <.012 < .007 <.011 Ce"' < .092 < .072 < .070 < .087 <.125 Date 30 Jul 03 27 Aug 03 27 Aug 03 27 Aug 03 Collected Sample Swiss Cabbage Lettuce Cabbage Type Chard Gross Beta 2.37 +/- 0.05 6.66 +/- 0.14 11.58 +/- 0.29 3.18 +/- 0.06 Be7 < 0.11 < 0.08 < 0.15 < 0.08 K' 0 2.43 +/- 0.32 5.93 +/- 0.30 9.51 +/- 0.42 2.77 +/- 0.26 Mn 5 ' <.012 < .007 <.011 < .006 Fes9 < .023 <.011 < .033 <.014 Cos8 <.010 < .006 <.011 < .005

< .008 <.011 < .007 < .007 Zn'5 < .024 < .022 < .033 <.012 Nb'5 < .006 <.010 < .009 < .005 Zr'5 <.012 < .020 < .022 <.019 1131 < .022 <.012 <.019 < .008 Cs' 3 ' <.008 < .007 <.013 < .007 Cs 13 ' < .006 < .009 <.012 < .009 Ba 140 < .054 < .033 < .047 < .027 La 140 <.013 < .004 < .006 < .008 Ce 14' < .070 < .060 < .086 < .044

-- page 115 of 119 --

CL-118 GREEN LEAFY VEGETABLE ACTIVITY (pCi/g wet)

Date 25 Jun 03 25 Jun 03 25 Jun 03 30 Jul 03 30 Jul 03 Collected Sample Swiss Swiss Lettuce Cabbage Lettuce Type Chard Chard Gross Beta 4.07 i 0.12 6.90 +/- 0.19 3.87 +/- 0.11 5.73 +/- 0.12 7.18 +/- 0.16 Be7 < 0.16 <0 .15 < 0.18 0.38 +/- 0.21 0.27 +/- 0.11 K40 4.40 i 0.50 7.43 i 0.53 3.65 +/- 0.58 4.32 +/- 0.59 6.65 +/- 0.43 Mn 54 < .013 <.016 <.019 <.018 <.010 Fe 5g < .035 < .030 <.038 < .026 < .022 Cosa < .007 <.010 <.011 <.017 < .005

<.013 <.010 <.014 <.013 <.012 Zns5 < .023 < .030 <.032 < .025 <.015 NbWs <.016 < .009 <.010 < .022 <.011 Zr's < .027 <.017 <.044 < .038 < .021 1131 < .027 < .020 <.025 < .033 <.019 Cs"'

< .022 <.010 <.018 < .020 <.011 Cs 137

<.016 <.015 <.015 <.015 < .006 Ba 1 40 < .079 < .045 <.086 < .056 < .038 La1 4 0 <.011 < .007 <.013 <.013 < .005 Ce 144 < .087 <.107 <.127 <.105 < .061 Date 30 Jul 03 27 Aug 03 22 Sep 03 22 Sep 03 Collected Sample Swiss Cabbage Cabbage Cabbage Type Chard Gross Beta 3.35 +/- 0.09 3.34 +/- 0.07 5.93 +/- 0.12 4.07 +/- 0.09 Be7 < 0.20 < 0.14 < 0.15 < 0.20 K40 3.99 +/- 0.58 3.03 +/- 0.43 7.25 +/- 0.71 4.11 +/- 0.45 Mns4 <.016 <.019 < .020 <.011 Fess <.038 <.027 < .036 <.018 Cosa

<.009 <.014 < .008 <.009 Co50

<.008 <.017 < .023 <.010 Znes <.035 <.022 < .035 <.015 Nb's <.016 <.011 < .021 <.017 zr'5 <.032 <.027 < .024 <.027 i1131 <.021 <.014 < .031 <.024 Cs 134 <.011 <.010 < .022 <.017 1 37 Cs <.020 <.016 <.015 <.010 Ba 140 < .104 <.051 < .131 <.064 La1 40 <.014 <.008 <.019 <.021 Ce 144 <.085 <.071 < .079 * '<.090

-- page 116 of 119 --

CL-19 FISH ACTIVITY (pCIg wet)

Date 14 Apr 03 14 Apr 03 14 Apr 03 14 Apr 03 Collected Largemouth Type Carp Bluegill White Bass Bass Be7 < 0.11 < 0.06 < 0.15 < 0.11 K'4 2.99 +/- 0.44 3.20 +/- 0.32 3.04 +/- 0.41 3.18 +/- 0.32 Mn 54 <.015 < .009 <.012 <.010 Fe"s5

< .048 <.018 -< .033 <.018 co 8

<.012 < .005 .< .016 < .004 Co'6

<.016 *< .008 <.010 <.010 Zn"s <.017 <.012 < .028 <.010 Nb"5 <.019 <.010 < .023 <.013 Zr"5 < .039 <.013 < .037 <.016 13 Cs ' < .009 < .007 <.015 <.010 Cs"' <.015 < .004 <.018 < .005 Ba"° <.126 < .087 < .206 < .071 La"' < .033 <.014 < .026 <.017 Ce 14 ' < .064 < .038 <.102 < .070 Date 13 Oct 03 13 Oct 03 13 Oct 03 13 Oct 03 Collected Largemouth Black & White Type Carp Bluegill Bass Crappie Be 7 < 0.17 < 0.16 <0.19 < 0.21 K'° 2.69 +/- 0.34 3.06 +/- 0.39 2.00 +/- 0.39 3.05 +/- 0.32 Mn 54 <.017 <.011 <.012 < .008 Fe 5" < .058 < .051 < .041 < .032 Co58 <.015 <.016 <.019 < .009 Co06 <.012 <.013 <.013 <.011 Zn"s < .030 < .040 <.013 < .025 Nb"s <.017 <.016 < .029 <.017 Zr"5 <.043 < .029 <.018 < .028 13 Cs ' <.012 <.013 <.013 <.014 137 Cs <.011 <.017 <.015 < .012 Ba 1" <.510 < .350 < .591 < .334 La"14 < .064 <.082. <.148 <.135 Ce" 4' <.065 < .071 < .060 < .085

--. page 117 of 119 --

CL-105 FISH ACTIVITY (Control)

(pCi/g wet)

Date 14 Apr 03 14 Apr 03 14 Apr 03 14 Apr 03 Collected Type Carp Largemouth Bass Bluegill White Crappie Be7 < 0.05 < 0.11 < 0.18 < 0.10 K40 2.99 +/- 0.32 3.51 +/- 0.47 2.08 +/- 0.37 2.95 +/- 0.36 Mn54 < .009 <.013 < .007 <.016 Fe$9 <.016 < .050 < .033 < .021 Coss

< .005 <.017 <.010 < .008 Co'° <.010 <.014 <.011 <.015 Znes < .006 <.016 <.012 <.013 Nb' 5 <.011 <.012 <.010 <.016 Zr"5 < .021 < .032 < .034 < .027 Cs 134 < .005 <.017 <.014 < .007 Cs" 7 < .006 <.011 <.011 <.012 Ba 140 < .087 < .159 <.157 <.130 La 140 <.014 < .023 < .034 < .020 Ce 144 < .029 < .079 < .062 < .044 Date 13 Oct 03 13 Oct 03 13 Oct 03 13 Oct 03 Collected Largemouth & Black & White Type Carp Bluegill White Bass Crappie Be7 < 0.12 < 0.18 <0.18 < 0.13 K40 2.75 +/- 0.38 2.77 +/- 0.37 2.39 +/- 0.41 2.77 +/- 0.35 Mns4 <.015 <.017 <.015 <.013 Fe59 <.039 < .023 < .043 < .049 Coss <.012 < .020 < .023 < .008 Co"6 < .009 < .009 <.014 <.012 Zn65 < .021 <.015 < .028 < .021 Nb"s <.019 < .023 < .020 < .023 Zr"5 <.033 < .048 < .044 < .026 Cs"4' <.015 <.015 <.015 <.010 Cs 137 <.016 <.013 <.019 <.011 Ba'40 < .394 < .457 < .576 < .253 La 1 40 < .063 < .057 <.148 <.126 Ce 144 < .066 <.121 < .090 < .051

-- page 118 of 119 --

CL-7B SHORELINE SEDIMENT ACTIVITY (pCI/g dry)

Date 14 Apr 03 13 Oct 03 Collected Be' < 0.14 < 0.15 K40 4.71 i 0.48 7.39 +/- 0.38 Mn 54 <.014 <.010 Fe 59 < .041 < .045 Coss <.015 <.016 co 60 <.012 <.012 Zn"5 < .025 < .028 Nb"s <.011 <.019 Zr"5 < .024 < .032 Cs134 <.016 <.016 Cs"' <.011 <.012 Ba 140 < .057 < .303 La140 <.015 < .082 Ce 144 < .070 < .080

-- page 119 of 119 -

U-603660, 2003 Annual Radiological Environmental Operating Report

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