U-603551, Annual Radiological Environmental Operating Report

From kanterella
Jump to navigation Jump to search
Annual Radiological Environmental Operating Report
ML021290197
Person / Time
Site: Clinton Constellation icon.png
Issue date: 04/29/2002
From: Pacilio M
AmerGen Energy Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
U-603551
Download: ML021290197 (131)


Text

AmerGen An Exelon/British Energy Company Clinton Power Station R.R. 3 Box 228 Clinton, IL 61727-9351 Phone: 217 935-8881 U-603551 1A.120 April 29, 2002 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 2001 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 of January 1, 2001 through December 31, 2001.

Respeully, Michael J. Pacilio "Zý-

Plant Manager Clinton Power Station RSF/

Attachment cc: Regional Administrator - NRC Region III NRC Senior Resident Inspector - Clinton Power Station Office of Nuclear Facility Safety - Illinois Department of Nuclear Safety 5

U-603551

SUBJECT:

Annual Radiological Environmental Operating Report bcc: J. M. Heffley, V-275 M. J. Pacilio, T-31A J. J. Madden, T-31Q J. D. Willams, T-31A Clinton Power Station Project Manager - NRR Director - Licensing, Mid-West Regional Operating Group Manager - Licensing, Clinton Power Station (MWROG)

Document Control Desk Licensing (Hard Copy)

Document Control Desk Licensing (Electronic Copy)

NSRB Coordinator, T-31J

AmerGen An Exelon / British Energy Company Clinton Power Station 2001 Annual Radiological Environmental Operating Report

01 January 2001 - 31 December 2001 ANNUAL RADIOACTIVE ENVIRONMENTAL OPERATING REPORT FOR THE CLINTON POWER STATION Prepared by:

Robert J. Campbell Chemistry Department

-- page 1 of 122 --

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

SUMMARY

6 II. INTRODUCTION 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 II1. RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 19 A. Program Description 19 B. Direct Radiation Monitoring 31 C. Atmospheric Monitoring 33 D. Aquatic Monitoring 37 o Fish 37 o Shoreline Sediments 38 E. Terrestrial Monitoring 38 0 Milk 38 o Grass 39 0 Vegetables 39 F. Water Monitoring 39 o Drinking Water 40 o Surface Water 40 o Well Water 41 G. Quality Assurance Program 43 H. Changes to the REMP During 2001 43 IV. 2001 ANNUAL LAND USE CENSUS 44 Summary of Changes 47 V. LIST OF REFERENCES 48

-- page 2 of 122 --

TABLE OF CONTENTS (continued)

ITEM PAGE VI. APPENDICES A. 2001 Radiological Environmental Monitoring Program Quality Control Check Results 50 B. REMP Annual Summary 72

1. Sampling and Analysis Frequency Summary 73
2. Radiological Environmental Monitoring Program Annual Summary 76 C. Glossary 85 D. Exceptions to the REMP during 2001 88 E. CPS Radiological Environmental Monitoring Results during 2001 90

-- page 3 of 122 --

LIST OF TABLES TABLE SUBJECT PAGE 1 Common Sources of Radiation 11 2-A CPS Radiological Monitoring Program Sampling Locations (TLD Sites) 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

-- page 4 of 122 --

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

-- page 5 of 122 --

EXECUTIVE

SUMMARY

I. EXECUTIVE

SUMMARY

This report describes the Annual Radiological Environmental Monitoring Program (REMP) conducted near the Clinton Power Station (CPS) during the 2001 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 any radiological impact upon the surrounding environment due to the operation of the Clinton Power Station.

During 2001, one-thousand-four-hundred-sixty-seven (1,467) environmental samples were collected. These samples represented direct radiation; atmospheric, terrestrial, and aquatic environments along with Clinton Lake surface water and public drinking water samples. Subsequently, one-thousand-eight hundred-nine (1,809) analyses were performed on these environmental samples.

Results of the analyses showed natural radioactivity and radioactivity attributed to other historical nuclear events. The radioactivity levels detected were similar to the Pre-Operational levels found prior to unit start-up. The CPS Pre Operational REMP Report documented natural background radionuclides and man-made radioactivity in the environment surrounding CPS.

Radiological environmental measurements taken during 2001 demonstrated that 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 2001.

Releases of gaseous radioactive materials were accurately measured in plant effluents. There were no gaseous releases that even 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 0.003 mRem.

All comparisons among Operational Data and Pre-Operational Data showed that during 2001, the operation of Clinton Power Station had no measurable effects upon the surrounding environment.

-- page 6 of 122 --

INTRODUCTION II. 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 - the radioactive materials released from CPS will 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 / minute 1 millicurie (mCi) = 2,220,000,000 disintegrations / minute 1 microcurie (ptCi) = 2,220,000 disintegrations / minute 1 nanocurie (nCi) = 2,220 disintegrations / minute 1 picocurie (pCi) = 2.22 disintegrations / minute

-- page 7 of 122 --

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 an analogy with distances. A picocurie would be the width of a pencil mark while a curie would be the equivalent of one-hundred (100) trips around the earth.

Radioactivity is related to the half-life and the atomic mass of a radionuclide. For example, Uranium-235 (U.3 .) 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 Iodine-131 (I131) 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 (Sr9 Kidney Uranium-235 (U235)

Thyroid Iodine-131 (1I13)

Muscle and Liver Tissue Cesium-137 (Cs 13 )

Gastrointestinal Tract Cobalt-60 (Co°)

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. Owing to 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

-- page 8 of 122 --

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 22 6)

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

Thorium-232 (Th 21 2 ) Lead-204 (Pb 20 4 )

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 lung lining. Table 1 shows the average annual effective dose due to radon.

About three-hundred (300) cosmic rays originating from outer space pass through each person every second.

-- page 9 of 122 --

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

Beryllium-10 (Be 1l) Sodium-22 (Na 22)

Carbon-14 (C1 4 ) Phosphorus-32 (p 32)

The interaction of cosmic rays with atoms in the earth's atmosphere produces radionuclides such as Beryllium-7, Beryllium-10, Carbon-14, Tritium, 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 three-hundred (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 - five-thousand (5,000) feet above sea level - will receive additional dose due to the increase of cosmic and terrestrial radiation levels. In fact, for every one-thousand (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 fifty-three (53) mRem.

-- page10 of122 --

I U TABLE 1 U A.

COMMON SOURCES OF RADIATION Average Annual Effective Dose Equivalent to the U.S. Population U 1. Natural Sources mRem

a. Radon 200 I b. Cosmic, Terrestrial, Internal
2. Man-Made Sources 100 mRem I a. Medical X-ray Diagnosis 39 Nuclear Medicine 14 I b. Consumer Products
c. Occupational
d. Miscellaneous Environmental 10

<1 1

e. Nuclear Fuel Cycle I Approximate Total

<1 364 PERCENTAGE OF CONTRIBUTION

  • os'rne P d (nut 3%)

Nucý Medcine (4%)

Radn (55%)

PMAN MADE X.. D'§n. (ll%)

  • MISC. Env~onnentla
  • Nuclear Fuel Cycle
  • OccupatiaraI Ctnic, Tcrostial FIGURE 1: DOSE CONTRIBUTIONS TW TME U.S. POPULA TON FROM PRINCIPAL SOURCES OFRA DIA RON EXPOSURE

-- page 11 of 122 -

C01

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 Iodine-131 (I"'s) Strontium-90 (Sr")

Strontium-89 (Sr 89) Cesium-137 (Cs 137 )

There are approximately two-hundred (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 Iodine-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 acres lie 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 thirty (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,

-- page 12 of 122 --

boating, water-skiing, hunting and fishing. Recreational facilities exist at 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 fifty-six (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 fifty (50) miles of the Clinton Power Station. Over half are located in the major metropolitan centers of Bloomington - Normal which is located about twenty-three (23) miles to the north northwest, Champaign - Urbana which is located about thirty-one (31) miles to the east, Decatur which is located about twenty-two (22) miles to the south southwest and Springfield which is located about forty-eight (48) miles to the west southwest. The nearest city is Clinton, the county seat of DeWitt County. The estimated population of Clinton is about 8,000 residents. Outside of the urban areas, most of the land within fifty (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'.

-- page 13 of 122 --

Fission Products Activation Products Cesium-137 (Cs 137 ) Cobalt-60 (Co 6")

Barium-140 (Ba 140 ) Manganese-54 (Mn 54)

Cerium-144 (Ce 1 4 4 ) Iron-59 (Fe 51)

Strontium-90 (Sr90 ) Zinc-65 (Zn85 )

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.

-- page 14 of 122 --

IL U)

ILl 0)

F z

IC pae1Jo 2 CD%7

The fuel rods are arranged in arrays called bundles that 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 contains 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 process. 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 the 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 the 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 seventy (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 walls 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.

-- page 16 of 122 --

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. The 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. The 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 commitment, CPS strives to be a zero (0) liquid release plant and was able to accomplish that commitment throughout 2001.

-- page 17 of 122 --

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 shipped 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 forty-six (46) hours. 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 Treat-ment 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.

-- page 18 of 122 --

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

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 operation[s] on the environment. Objectives of the program include the following:

"* identification, measurement and evaluation of existing radionuclides in the environs 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 they were designed to.

AmerGen Energy Company, LLC currently maintains a contract with Environmental Inc. Midwest Laboratory, for the analysis of all radiological

-- page 19 of 122--

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 an additional follow up analysis is required. Analytical results are then reported back monthly to the ODCM Program Owner.

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:

0 direct radiation 0 atmospheric 0 aquatic 0 terrestrial environments 0 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 unit operations. These control 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 unit operations.

-- page 20 of 122 --

or RELEASES DILUTED By ATMOSPHER I

I ANIMALS (MILK, MEAT ) *PLUME EXPOSURE AIRBORNE RELEASES CLINTON POWER STATION t

II AND INHALATION CONSUMED BY PEOPIE V LIQUID RELEASES t

PEOPLE CONSUMED

  • 1 *COSUMED BY PEOPLE RELEASES DILUTED BY LAKE I

BY ANIMAL CONSUMED ttDRINKING WATER_

BY PEOPLE FISH SHORELINE

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

-- page 21 of 122 --

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) Stack.

-- page 22 of 122--

N 84 CLINTON LAKE 16 4

Figure 4 REMP Sample Locations within 1 Mile

-- page 23 of 122 --

Figure 5 REMP Sample Locations within 1 - 2 Miles

-- page 24 of 122 --

Figure 6 REMP Sample Locations within 2 - 5 Miles

-- page 25 of 122 --

Figure 7 REMP Sample Locations greater than 5 Miles

-- page 26 of 122--

TABLE 2-A CPS RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM SAMPLING LOCATIONS TLD Sites Station Distance Station 1.1. . .. . .. Distance Code IDescription Sector j(mi les) LIý Code I____ Decito Secto I (miles)

CL-1 Inner ring W 1.8 CL-51 Outer Ring NW 4.4 CL-2 Supplemental NNE 0.7 CL-52 Outer Ring NNW 4.3 Control CL-3 Supplemental NE 0.7 CL-53 Outer Ring E 4.3 Control CL-4 Supplemental SW 0.8 CL-54 Outer Ring ESE 4.6 Control CL-5 Inner Ring NNE 0.7 CL-55 Outer Ring SE 4.1 CL-6 Supplemental WSW 0.8 CL-56 Outer Ring SSE 4.1 Control CL-7 Supplemental SE 2.3 CL-57 Outer Ring S 4.6 Control CL-8 Supplemental E 2.2 CL-58 Outer Ring SSW 4.3 Control CL-11 Control S 16 CL-60 Outer Ring SW 4.5 CL-15 Supplemental N 0.9 CL-61 Outer Ring WSW 4.5 Control CL-22 Inner Ring NE 0.6 CL-63 Inner Ring NNW 1.3 CL-23 Inner Ring ENE 0.5 CL-64 Special Interest WNW 2.1 CL-24 Inner Ring E 0.5 CL-65 Special Interest ENE 2.6 CL-33 Supplemental SW 11.7 CL-74 Special Interest W 1.9 Control CL-34 Inner Ring WNW 0.8 CL-75 Special Interest N 0.9 CL-35 Inner Ring NW 0.7 CL-76 Outer Ring N 4.6 CL-36 Inner Ring N 0.6 CL-77 Outer Ring NNE 4.5 CL-37 Special Interest N 3.4 CL-78 Outer Ring NE 4.8 CL-41 Special Interest E 2.4 CL-79 Outer Ring ENE 4.5 CL-42 Inner Ring ESE 2.8 CL-80 Outer Ring W 4.1 CL-43 Inner Ring SE 2.8 CL-81 Outer Ring WNW 4.5 CL-44 Inner Ring SSE 2.3 CL-84 Supplemental E 0.6 Control CL-45 Inner Ring S 2.8 CL-90 Supplemental SE 0.4 Control CL-46 Inner Ring SSW 2.8 CL-91 Supplemental ENE 6.1 Control CL-47 Inner Ring SW 3.3 CL-97 Supplemental SSW 10.3 Control CL-48 Inner Ring WSW 2.3 CL-99 Supplemental NNE 3.5 Control CL-49 Special Interest W 3.5 CL-1 14 Supplemental SSE 12.5 Control

-- page 27 of 122 --

TABLE 2-B CPS RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM SAMPLING LOCATIONS Station Cttode Description Air Surface 'ii*

Drinking Fo Food .i Milk Ground Grater Code__ Water Water ProductsWae CL-1 Camp Quest (1.8 miles W) S CL-2 Site's main access road (0.7 miles NNE) 4 CL-3 Site's secondary access road (0.7 miles NE)

CL-4 Residence near recreation area (0.8

CL-6 CPS recreation area (0.8 miles WSW) _

CL-7 Mascoutin Recreation Area (2.3 miles SE)

CL-7D Mascoutin EE Recreation Area (2.3 miles ESE)

CL-8 DeWitt Cemetery (2.2 miles E) 4 CL-i 1* 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 Service Building 4 CL-i 5 Near residence on Rt. 900N (0.9 miles 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) S CL-99 North Fork canoe access area (3.5 miles NNE)

CL-106 Pasture (2.0 miles NNE) S CL-114* Residence in Cisco (12.5 miles SSE) _/

Site's secondary access road (0.7 miles CL-115 NE)

CL-1 16 Pasture in rural Kenney (14 miles WSW)

CL-1 17 Resident north of site (0.9 miles N) __

CL-1 18 Site's main access road (0.7 miles NNE) ,_

Station Shoreline Code Description Grass Fish Sediment CL-1 Camp Quest (1.8 miles W) 0 CL-2 Site's main access road (0.7 miles NNE) 0 CL-7B SE of site on Clinton Lake (2.1 miles SE)

Mascoutin Recreation Area (1.3 miles CL-7C SE SE)

CL-8 DeWitt Cemetery (2.2 miles E) _

CL-10 Illinois Rt.48 bridge (5.0 miles ENE)

CL-19 End of the discharge flume (3.4 miles E) 4 _

CL-88 Located SE of site (2.4 miles SE)

CL-89 Located NNE of site (3.6 miles NNE)

CL-105* Lake Shelbyville (50 miles S) .,4 CL-116 Pasture in rural Kenney (14 miles WSW) 0

  • Control Location 4 ODCM required samples
  • Supplemental samples Note: Location is listed by distance in miles and directional sector from the Station HVAC stack.

-- page 28 of 122 --

TABLE 3-A CPS REMP REPORTING LEVELS FOR RADIOACTIVITY CONCENTRATIONS IN ENVIRONMENTAL SAMPLESd Anyis Water Airborne Fish Milk Food Products (pCi/I) Particulate or3 (pCilkg - (p*=ig) (pCilkg - wet)

Gases (pCi/m ) wet)

H3 2 0 ,0 00 ......... ----

Mn 5 4 1,000 --- 30,000 ......

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

Co 5 8 1,000 --- 30,000 --

Co 60 300 --- 10,000 ......

Zn 65 300 --- 20,000 ---....

Zr/Nb 95 400c .........

1131 2b 0.9 --- 3 100 Cs, 3 4 30 10 1,000 60 1,000 Cs 1 37 50 20 2,000 70 2,000 Ba/La 14 0 200c ..... - 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/l may be used.

c Total for parent and daughter.

d This list does not mean these nuclides are the only ones considered. Other nuclides are identified and reported when applicable.

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

AnlyisWaer Airborne Fpishg Food Sediment Anailsi Pariclaeerr Gas (pCi/g or ) (pC Milkill) Products (pCi/kg - (pCi/kg (PC')

(~im3 Ga wt)wet) dry)

Gross Beta 4 0.01 H3 2,000*

Mn54 15 130 Fe69 30 260 Co, Co60 58 15 130 Zn 65 30 260 Zr95 30 Nb95 15 1131 1** 0.07 1 60 134 0.05 130 15 60 150 Cs 15 Cs 13 7 18 0.06 150 18 80 180 Ba 140 60 60 La`4° 15 15 ii nlU UiingIIIy w!Le.I pLathIway eXilst, d Va 01 3,000 UU L.,Ill may Ue useU.

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

-- page 29 of 122 --

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 alpha and 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 radiation[s] may be released by many different radionuclides. Gross activity measurements

- while useful as general trend indicators - 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. Since naturally occurring radionuclides are abundant in environmental samples - irrespective of CPS Operations positive results for certain radionuclides and gross alpha / beta measurements are discussed further in this section of the report.

-- page 30 of 122 --

B. Direct Radiation Monitoring Radionuclides present in the air - in addition to those deposited in or on the ground - will 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 many 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 minimal loss of this 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 to approximately twenty (20) mRem per quarter.

Monitoring stations are placed near the site boundary and approximately five (5) miles from the reactor, in locations representing the sixteen (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 site, in areas that will not be influenced by plant 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 two-hundred-sixteen (216) TLD measurements were made throughout 2001. The average quarterly dose from our Indicator Location[s]

was 18.1 mrem. At our Control Locations, the average quarterly dose was 16.9 mRem. These quarterly measurements ranged from 13.1 to 21.9 mRem for Indicator TLDs and 15.0 to 19.5 mRem for Control TLDs.

Figure 8 compares the 2001 quarterly TLD results with 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.

-- page 31 of 122 --

TABLE 4 AVERAGE QUARTERLY TLD RESULTS Average +/- 2a (mRem/quarter) 1- 1.2 +/-Z./ 1b.4 +/-2.9 23 3[W z*AK 18.0 +/-2.8 18.8+/-3.2 qA q -- ý 18.4 +/-2.9 19.3 +/- 3.5 4$9S n 18.8 +/- 3.2 19.1 +/- 4.7 47 a ý n- I, I "0o.4 I 34 17.3 +/- 2.4 17.4 +/- 2,8 17.5 +/- 2.6 17.1 +/- 2.8 17.3+/-3.3 17.6+/-3.7 18.8 +/-32 19,1 +/-4.7 17.8 +2.2 From the above observations - when factoring in the statiscial variances - there was no increase in environmental gamma radiation levels resulted from unit operations at of the Clinton Power Station.

-- page 32 of 121 --

co4-

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 samplers around the Clinton Power Station monitors this pathway. There are nine (9)

Indicator Location air sampling stations strategically located 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 Location is located approximately sixteen (16) miles south of the plant in an area that is totally independent from any of the effects from unit operation[s].

Historical meteorological data indicates that this Control Location is normally upwind from the plant.

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 and the flow rate. This 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 1131 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 plant, the counting of short-lived daughters - produced by the decay of natural radon and thoron - may otherwise mask any plant contributions. Therefore, these filters are not analyzed for at least five (5) days after their collection. This allows for the radioactive decay of short lived daughters, thus reducing their contribution 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. The calculated annual average was 0.025 pCi/in 3 for all Indicator Locations and 0.026 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/m3 .

The location with the highest calculated annual average was measured at Indicator Location CL-8 that is located 2.2 miles east of the Clinton Power Station. This location had an average concentration of 0.027 pCi/m 3. Individual location averages for the year are presented in Table 5.

Minor fluctuations in the gross beta concentrations were noted throughout 2001. 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

-- page 33 of 122 --

concentrations displayed in Figure 9. There were no significant differences observed between these individual locations. Monthly averages for Indicator and Control Locations for the 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 2001 were within normal background levels and no increases were noted as a result of the operation of the Clinton Power Station.

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

No measurable contribution to the overall level of airborne particulate radioactivity was identified as a result of unit operations. The radioactivity that was detected - naturally occurring Be 7 - is normally found in the environment and is consistent with the expected concentrations of natural radioactivity and fallout from prior atmospheric nuclear weapons testing.

-- page 34 of 122 --

TABLE 5 ANNUAL AVERAGE GROSS BETA CONCENTRATIONS IN AIR PARTICULATES Average +/- 2a (pCi/m 3 )

Station Description 2000 2001 CL-1 Camp Quest @ Birkbeck 0.027 +/- 0.021 0.025 +/- 0.009 CL-2 CPS Main Access Road 0.027 +/- 0.021 0.026 +/- 0.008 CL-3 CPS Secondary Access Road 0.028 +/- 0.022 0.026 +/- 0.010 CL-4 0.8 miles SW 0.027 +/- 0.022 0.025 +/- 0.009 CL-6 CPS Recreation Area 0.027 +/- 0.026 0.026 +/- 0.009 CL-7 Mascoutin State Recreation Area 0.025 +/- 0.019 0.024 +/- 0.010 CL-8 DeWitt Cemetery 0.026 +/- 0.021 0.027 +/- 0.008 CL-11a IP Substation @ Argenta 0.027 +/- 0.019 0.026 +/- 0.009 CL-15 0.9 miles N 0.026 +/- 0.021 0.025 +/- 0.013 CL-94 Old Clinton Road - 0.6 miles E 0.027 +/- 0.023 0.026 +/- 0.009 (a) Control Station TABLE 6 AVERAGE MONTHLY GROSS BETA CONCENTRATIONS IN AIR PARTICULATES Average +/- 2a (pCi/mi)

MONTH 2000 Indicator 2001 Indicator 2000 Control 2001 Control January 0.034 +/-0.002 0.033 +/-0.004 0.035 +/-0.016 0.033 +/-0.014 February 0.030 +/-0.002 0.029 +/-0.003 0.030 +/-0.018 0.027 +/-0.007 March 0.020 +/-0.001 0.021 +/-0.003 0.020 +/-0.011 0.022 +/-0.009 April 0.018 +/-0.003 0.022 +/-0.004 0.019 +/-0.005 0.023 +/-0.008 May 0.021 +/-0.002 0.019 +/-0.004 0.022 +/-0.005 0.019 +/-0.013 June 0.019 +/-0.002 0.021 +/-0.003 0.020 +/-0.009 0.021 +/-0.009 July 0.022 +/-0.004 0.025 +/-0.004 0.023 +/-0.005 0.026 +/-0.004 August 0.027 +/-0.002 0.026'+/-0.003 0.029 +/-0.020 0.027 +/-0.007 September 0.022 +/-0.002 0.026 +/-0.002 0.021 +/-0.011 0.026 +/-0.006 October 0.034 +/-0.004 0.022 +/-0.003 0.033 +/-0.022 0.021 +/-0.011 November 0.034 +/-0.004 0.033 +/-0.004 0.033 +/-0.030 0.033 +/-0.036 December 0.038 +/-0.005 0.029 +/-0.002 0.036 +/-0.024 0.028 +/-0.011

-- page 35 of 122 --

t

-- page36of122--

D. Aquatic Monitoring The Clinton Power Station utilizes a man-made lake as the source of cooling water and returns this used cooling water to the same lake while most nuclear power stations use once-through flow from a river, an ocean or body of water much larger than Clinton Lake. If 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 successive trips through the plant.

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, the lake is a major recreational facility used for fishing, swimming, water skiing, boating and hunting.

Clinton Lake constitutes the primary environmental exposure pathway for radioactive materials 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. Both Indicator and Control Location[s] are sampled.

Indicator samples were taken from various locations throughout Clinton Lake whereas Control samples are obtained from Lake Shelbyville approximately fifty (50) miles south of Clinton Power Station - thus serving as an excellent comparison to unit operations.

In addition to naturally occurring radioisotopes, Sr° was found in one sample. However, the overall concentrations of radionuclides in samples collected near the Clinton Power Station were comparable to the concentrations in samples collected from the Control Location at Lake Shelbyville. The presence of this fission product is attributable to previous nuclear weapons testing and fallout from the accident occurring at Chernobyl. The operation of Clinton Power Station had no measurable contribution to the radioactive inventory of the aquatic environment.

Fish Various samples of fish are collected from Clinton Lake and Lake Shelbyville. From both lakes; these samples consists of largemouth bass, crappie, carp, and bluegill. The selections of these species are the fish most commonly harvested from the lakes by sport fishermen. Fish will ingest sediments during bottom feeding - or prey on other organisms which 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 this aquatic pathway.

These samples are collected semi-annually and analyzed by gamma spectroscopy.

The gamma spectroscopy analysis revealed that fish samples showed the presence of naturally occurring K4 ° [Potassium] in all samples.

All other analytical results were less than the lower limit of detection (LLD) for each radionuclide.

-- page 37 of 122 --

Shoreline Sediments Samples of shoreline sediments were collected at both Clinton Lake and at Lake Shelbeyville. 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 the environment. Samples are collected semi-annually and analyzed for gross beta, gross alpha, Sr9' and gamma isotopic activities.

Shoreline sediment samples are dried prior to analysis and the results are reported in pCi/g dry weight. Naturally occurring radioisotopes were present in samples taken at both Indicator and Control Locations.

There was only one fission product - Sr9 ° - that was detected from the Control Location. The activity detected was well within the range from that measured during the Pre-Operational period.

Isotope Pre-Op Range 2000 Range 2001 Range (pCi/g dry) (pCi/g dry) (pCi/g dry)

Sr 90 0.011 - 0.056 0.014 - 0.044 0.011 - 0.027 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 ingests them either directly by man or indirectly. To monitor this food 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 collected. These samples are analyzed by gamma spectroscopy.

The gamma spectroscopy analysis revealed the presence of naturally occurring K40 [Potassium] and Be 7 [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. Milk samples are collected from a dairy located about fourteen (14) miles west

-- page 38 of 122 --

southwest of the station (twice a month during May through October and once a month during November through April). These samples are analyzed for 131, Sr90 , and gamma isotopic activities.

Results from these analyses showed Sr9 ° concentrations ranging from 0.5 to 3.1 pCi/I [pico-curies per liter of milk]. The analysis of SPO on milk samples was added to the REMP during the operational phase of the program and as such, no Pre-Operational data for this isotope is available

[see below*]. There was no 113 detected in any of the milk samples collected.

Isotope Pre-Op Range 2000 Range 2001 Range (pCi/I) (pCi/I) (pCi/I)

Sr9° *Not Available 0.2-3.2 0.5-3.1 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 r131.

The results from the analyses showed only naturally occurring Be 7 and K4° in these samples. There was no 1131 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 thirteen (13) miles downwind - which is considered to be unaffected by unit operations.

Samples are collected once a month during the growing season (June through September) and are analyzed for gross beta and gamma isotopic activities including 1131.

The results from the analyses showed only naturally occurring Be 7 and K40 from these samples. There was no I1`3 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 unit operations at the Clinton Power Station.

-- page 39 of 122 --

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 in Table 7 at the end of this section.

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

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 contracted laboratory service represents a composite of the individual samples that are collected throughout the month. This monthly composite sample is then analyzed for gross alpha, 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 2.1 pCi/I. These levels are attributed to very fine particles of sediment containing I<' which 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 other Composite Water Sampler is positioned to sample water being released from the plant at the start of the plant discharge flume. Grab samples are collected from one (1) Indicator Location on Clinton Lake.

Surface water samples are analyzed for gross beta, gamma isotopic, and H3 [Tritium] activities. Additional analyses for gross alpha activity are performed on the upstream water samples. Additional analyses for gross alpha activity and 1131 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.

-- page 40 of 122 --

Results of all gross beta analyses ranged from 1.1 to 7.4 pCi/I for the composite water samples and 2.3 to 3.2 pCi/I for the grab samples. Pre Operational gross beta activity ranged from 1.1 to 7.6 pCi/I. These results are attributed to naturally occurring K40 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 lower limits of detection (LLD). Pre-Operational 1-1f [Tritium] concentrations ranged from 220 to 330 pCi/I. As noted in Reference E187, previous nuclear weapons testing has increased the pre-1960 levels of Tritium (6-24 pCi/I) by a factor of approximately fifty (50) to 300-1,200 pCi/I.

Gamma-emitting radioisotopes were all below the lower limits of detection (LLD) and there wasn't any 1131 detected from any surface water sample 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. Each sample is analyzed for 1131, gross alpha, gross beta, H3 [Tritium]

and gamma isotopic activities.

Results of the gross beta analyses ranged from 1.9 to 2.4 pCi/l.

Pre-Operational gross beta activity ranged from 1.1 to 5.1 pCi/I. The gross beta activity was attributed to naturally occurring K'4 suspended as fine sediment particles in water.

Gamma-emitting radioisotopes were all below the lower limits of detection (LLD) and there wasn't any 1131 or H3 detected from any well water sample collected.

-- page 41 of 122 --

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

STATION DESCRIPTION 2000 2001 Drinking Water CL-14 CPS (Service Building) 1.2 +/- 0.5 1.4 +/- 0.6 Surface Water CL-13 Salt Creek (below dam) 2.5 +/- 0.9 2.9 +/- 0.8 CL-90 CPS Discharge Flume 2.6 +/- 1.1 2.9 +/- 1.5 CL-91 Parnell Boat Access 2.3 +/- 1.4 2.7 +/- 0.9 CL-99 North Fork Canoe Access 3.1 +/- 2.1 3.4 +/- 4.2 Well Water Mascoutin State Recreation 2,0 0,8 2.3 0,8*

CL-7D Area CL-12(T) DeWitt Pump Station 2.9 +/- 0.9 2.4 +/- 0.0 CL-12(U) DeWitt Pump Station 2.1 +/- 1.4 1.9 +/- 1.3 (U) Untreated (T) Treated *only one positive result

-- page 42 of 122 --

G. Quality Assurance Program To establish confidence and credibility that the data collected and reported is 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:

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

0 Audits of analysis laboratory functions and their facilities.

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

0 Duplicate analysis of all samples received (excluding TLDs). This requirement is to check laboratory precision.

o 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.

Our Vendor - Environmental Inc. - has participated in interlaboratory comparison (crosscheck) programs since the formulation of their quality control program back in December 1971. These programs are operated by agencies which supply environmental type samples - such as milk and water - containing concentrations of radionuclides that are only known to 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 2001 Environmental Inc. cross-check program are shown in Appendix A.

H. Changes to the REMP During 2001 On occasion, revisions to the Radiological Environmental Monitoring Program are necessary so as to improve the monitoring of the environmental exposure pathways. These changes may result from items identified during the performance of the Annual Land Use Census, to incorporate revised or new regulatory requirements or Quality Assurance audits.

During the course of 2001, there were no changes to the REMP program as delineated within the Off-Site Dose Calculation Manual.

-- page 43 of 122 --

2001 ANNUAL LAND USE CENSUS

IV. 2001 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 and feeds into the REMP ensuring that these programs are as current as possible.

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 five-hundred (500) 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 sixteen (16) meteorological sectors all milk animals and all gardens of greater than five-hundred (500) square feet that produce broadleaf vegetation. A detailed summary of the Annual Land Use Census is provided in a separate document and permanently archived at CPS.

In order to assemble as much information as possible, the locations of residences, critical age groups, milk animals, vegetable garden contents, and livestock were recorded for 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 2001 CPS Annual Radioactive Effluent Release Report.

Direct contact, a mail-in questionnaire, telephone, or direct observation surveyed two-hundred forty (240) area residents. The information provided in this section of the report is a summary of the results of the census. The nearest residence, garden, and milk animal in each sector out to five (5) miles are given in Table 8.

Data for this census was obtained using the following means:

o Performed door-to-door solicitation of residences / land owners identified from the previous year's Annual Land Use Census and the most current DeWitt County plat book. If a resident was unavailable for this questioning, a questionnaire was placed on their door requesting them to answer the questions and mailing back to the Station.

o Performed telephone solicitation of person[s] who were unavailable during the door-to-door survey and who did not mail back their questionnaire.

-- page 44 of 122 --

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

O Contacted several state and local agencies.

-- page 45 of 122--

TABLE 8 ANNUAL LAND USE CENSUS

SUMMARY

RESULTS Sector Nearest Residence Nearest Garden Nearest Milk (miles) (miles) Animal (miles)

N 0.9 0.9 0.9 NNE 1.0 2.9 1.3 NE 1.3 2.1 3.4 ENE 1.8 2.6 4.8 E 1.0 1.0 1.0 ESE 3.2 3.3

  • SE 2.8 4.4 4.4 SSE 1.8 2.8
  • S 3.0 3.0
  • 3.4 SW 0.7 3.6 3.6 WSW 1.6 2.2 3.4 W 1.6 2.1 2.1 WNW 1.6 1.6
  • NW 1.6 2.9 2.4 NNW 1.7
  • 1.3

(*) None identified within five (5) miles of CPS in this meteorological sector.

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 unit operations.

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

-- page 46 of 122 --

Summary of Changes Identified in 2001 Annual Land Use Census Nearest Residence No changes were identified for the nearest residence in the sixteen (16) meteorological sectors.

Garden Census One-hundred-ten (110) gardens within a five (5) mile radius were located in the sixteen (16) geographical sectors surrounding CPS that contained broad leaf vegetation - such as lettuce and cabbage - and were greater than five-hundred (500) square feet.

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

2000 Census Location 2001 Census Location

> 5 miles SE 4.4 miles SE 1.6 miles W 2.1 miles W 2.3 miles NNW > 5 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 located in the sixteen (16) geographical sectors surrounding CPS. Twelve (12) 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 one (1) of the sixteen (16) geographical sectors and are indicated below:

2000 Census Location 2001 Census Location

> 5 miles SE 4.4 miles SE No changes or additions to REMP milk sampling locations were made as a result of the Milk Animal Census.

-- page 47 of 122 --

LIST OF REFERENCES 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 2000 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 48 of 122 --

"* 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.

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

"* Clinton Power Station, Updated Safety Analysis Report.

"* Clinton Power Station, Unit 1, OFFSITE DOSE CALCULATION MANUAL.

-- page 49 of 122 --

APPENDICIES

. . . v.

- "-:... Environmental, Inc.

Midwest Laboratory an Allegheny Technologies Co.

700 Landwehr Road - Northbrook, IL 60062-2310 (847) 564-0700 fax (847) 564-4517 APPENDIX A INTERLABORATORY COMPARISON PROGRAM RESULTS NOTE: Environmental, Inc., Midwest Laboratory participates in intercomparison 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, 2001 through December, 2001

-- page 50 of 122--

Appendix A Interlaboratory Comparison Pro-gram 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 (e.g., milk or water) 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.

The results in-Table A-1 were obtained through participation in the environmental sample crosscheck program for milk, water and air filters during the past twelve months. Data for previous years is available upon request.

This program was conducted by the U.S. Environmental Protection Agency Office of Research and Development National Exposure Research Laboratory Characterization Research Division-Las Vegas, Nevada.

The results in Table A-2 were obtained for Thermoluminescent Dosimeters (TLDs), via various International Intercomparisons of Environmental Dosimeters under the sponsorships listed in Table A-2. Results of crosscheck testing with Teledyne Brown Engineering are 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.

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.

-- page 51 of 122 -

Al

12-31-01 ATTACHMENT A ACCEPTANCE CRITERIA FOR "SPIKED" SAMPLES LABORATORY PRECISION: ONE STANDARD DEVIATION VALUES FOR VARIOUS ANALYSES.

One Standard Deviation for single determinations n alysis*,

Gamma Emitters 5 to 100 pCi/liter or kg 5.0 pCi/liter

> 100 pCi/liter or kg 5% of known value Strontium-89b 5 to 50 pCi/liter or kg 5.0 pCi/liter

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

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

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

> 100 pCi/liter 5% of known value Tritium 4,000 pCi/liter Is = (pCi/liter) = 0 933 169.85 x (known)°

> 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 Iodine-131, 55 pCi/liter 6.0 pCi/liter Iodine-1 29b > 55 pCi/liter 10% of known value Uranium-238, 35 pCi/liter 6.0 pCi/liter Nickel-63b > 35 pCi/liter 15% of known value Technetium-99b Iron-55b 50 to 100 pCi/liter 10 pCi/liter

> 100 pCi/liter 10% of known value Others' 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 52 of 122 --

Table A-1. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA)a.

Concentration in pCi/Lb Lab Sample Date Control Code Type Collected Analysis Laboratory resultc ERA Resultd Limits STW -897 WATER Jan, 2001 Gr. Alpha 31.9+/-2.1 45.7 +/- 11.4 25.9 - 65.5 25.3+/- 2.7 16.7+/- 5.0 8.0 - 25.4 STW-897 WATER Jan, 2001 Gr. Beta 1-131 27.2+/-0.8 28.3 +/- 3.0 23.1 - 33.5 STW-900 WATER Feb, 2001 4.0+/- 0.1 4.7 +/- 0.7 3.4 - 5.9 STW'-902 WATER Feb, 2001 Ra-226 13.8+/- 0.4 14.4 +/- 3.6 8.2 - 20.6 STW'-902 WATER Feb, 2001 Ra-228 17.0+/- 0.3 20.4 +/- 3.0 15.2 - 25.6 STW'-902 WATER Feb, 2001 Uranium 17,400.0 +/- 69.7 17,800.0 +/- 1,780.0 14,700. - 20,900.0 STW'-903 WATER Mar, 2001 H-3 57.4+/-3.5 56.0 +/-14.0 31.8 - 80.2 STW -917 WATER Apr, 2001 Gr. Alpha 13.5+/-0.4 17.7+/- 2.7 13.1 -22.3 STW -917 WATER Apr, 2001 Ra-226 8.1 +/-2.0 4.6-11.6 STW*-917 WATER Apr, 2001 Ra-228 10.1 +/-0.6 14.2+/- 0.2 15.6 +/- 3.0 10.4-20.8 STW*-917 WATER Apr, 2001 Uranium 27.9+/- 1.4 26.4 +/- 5.0 17.7-35.1 STW'-918 WATER Apr, 2001 Co-60 16.0+/-0.4 16.9 +/- 5.0 8.2 - 25.6 STW'-918 WATER Apr, 2001 Cs-134

'-918 WATER Apr, 2001 Cs-1 37 195.4+/- 1.5 186.0 +/-9.3 170.0 - 202.0 STW 340.0+/- 51.0 343.0 +/-1.7 252.0 - 428.0 STW\'-918 WATER Apr, 2001 Gr. Beta 62.8+/- 5.7 64.1 +/- 5.0 55.5 - 72.8 ST" (-918 WATER Apr, 2001 Sr-89 33.8 +/- 5.0 25.1 - 42.5 STW(-918 WATER Apr, 2001 Sr-90 34.2 +/- 1.6 37.8+/- 1.2 36.0 +/- 5.0 27.3 - 44.7 STVW(-919 WATER Jun, 2001 Ba-133 46.8 +/- 5.0 38.1 - 55.5 STW(-919 WATER Jun, 2001 Co-60 49.9+/- 0.7 15.9 +/- 5.0 7.2 - 24.6 STW/-919 WATER Jun, 2001 Cs-134 16.0+/- 1.4 208.0 +/-11.7 197.0 +/- 9.9 180.0 - 214.0 STW(-919 WATER Jun, 2001 Cs-1 37 36.2 +/- 5.0 27.5 - 44.9 STA (-919 WATER Jun, 2001 Zn-65 37.8+/- 0.7 14.6+/- 0.4 15.4 +/- 2.3 11.4- 19.4 STWA V-920 WATER Jun, 2001 Ra-226 6.2 +/- 0.2 4.5+/-1.1 2.6 - 6.5 STWV-920 WATER Jun, 2001 Ra-228 49.0 +/- 1.0 55.7 +/- 5.6 46.1 - 65.3 STWV-920 WATER Jun, 2001 Uranium 19.8+/- 1.5 31.2 +/- 5.0 22.5 - 39.9 STWV-921 WATER Jul, 2001 Sr-89 Delay in processing may have attributed to deviation.

Result of reanalysis; Sr-89, 35.3 +/- 4.4 pCi/L. Sr-90, 25.0 +/- 2.8 pCi/L.

25.9 +/- 5.0 ,17.2-34.6 STY /-921 WATER Jul, 2001 Sr-90 26.3+/- 1.1 17.8 +/- 5.0 9.1 - 26.5 STY/-922 WATER Jul, 2001 Gr. Alpha 23.3 +/- 1.9 53.0 +/- 10.0 35.7 - 70.3 STY/-922 WATER Jul, 2001 Gr. Beta 48.5+/-4.6 2,680.0+/-41.9 2,730.0 +/- 356.0 2,110.0 - 3,350.0 STY/-924 WATER Aug, 2001 H-3 10.8 +/- 1.6 8.0 - 13.6 STY/-931 WATER Sep, 2001 Ra-226 10.9+/-0.2 9.0 +/- 2.2 5.1 - 12.8 STY1-931 WATER Sep, 2001 Ra-228 9.7+/- 1.1 13.1 +/-3.0 7.9 - 18.3 STY1-931 WATER Sep, 2001 Uranium 11.2+/- 0.1 7.7 +/- 2.0 4.2-11.2 STY /-932 WATER Oct, 2001 1-131 7.7 +/- 0.3 82.2 +/- 4.0 97.5 +/- 24.4 55.3- 140.0 STY"1-933 WATER Oct, 2001 Gr. Alpha Ra-226 9.5 +/- 1.2 10.8++/-1.6 8.0- 13.6 STV /-933 WATER Oct. 2001 A1-1 -- page 53 of 122 --

Table A-1. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA)a.

Concentration in pCi/Lb Lab Sample Date Control Code Type Collected Analysis Laboratory resultc ERA Resultd Limits STW-933 WATER Oct, 2001 Ra-228 17.0+/-0.8 15.6+/-3.9 8.9-22.4 STW-933 WATER Oct, 2001 Uranium 32.2+/- 1.4 37.2+/- 3.7 30.7-43.6 STW-934 WATER Oct, 2001 Co-60 82.4 +/- 0.9 78.4 +/- 5.0 69.7 - 87.1 STW-934 WATER Oct, 2001 Cs-1 34 52.2+/- 1.3 54.1 +/- 5.0 45.4-62.8 STW-934 WATER Oct. 2001 Cs-1 37 39.4 +/- 0.6 37.9 +/- 5.0 26.3 - 43.7 STW-934 WATER Oct, 2001 Gr. Beta 166.0+/-7.1 192.0+/-28.8 142.0 - 242.0 STW-934 WATER Oct, 2001 Sr-89 12.8+/- 0.8 16.7+/-5.0 8.0-25.4 STW-934 WATER Oct, 2001 Sr-90 6.8+/-0.7 7.7 +/-5.0 -1.0- 16.4 STW-935 WATER Oct, 2001 Gr. Alpha 63.5+/-2.5 64.0+/- 16.0 36.5- 91.5 STW-935 WATER Oct, 2001 Gr. Beta 26.0+/- 1.2 21.5+/- 5.0 12.8-30.2 STW-938 WATER Nov 2001 Ba-133 66.7+/- 1.2 69.3+/- 6.9 57.5-81.1 STW-938 WATER Nov, 2001 Co-60 59.3+/- 0.6 59.7+/- 5.0 51.0-68.4 STW-938 WATER Nov, 2001 Cs-1 34 86.7+/- 1.5 93.9+/- 5.0 85.2- 103.0 STW-938 WATER Nov, 2001 Cs-1 37 45.0 +/- 1.0 42.0 +/- 5.0 33.3 - 50.7 STW-938 WATER Nov, 2001 Zn-65 80.7 +/- 0.6 77.3 +/- 7.7 63.9-90.7 a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the environmental samples crosscheck program operated by Environmental Resources Associates (ERA).

b All results are in pCi/L, except for elemental potassium (K) data in milk, which are in mg/L; air filter samples, which are in pCi/Filter.

c Unless otherwise indicated, the laboratory result is given as the mean +/- standard deviation for three determinations.

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

Al1-2 -- page 54 of 122--

Table A-2. Crosscheck program results; Thermoluminescent Dosimeters. (TLDs).

mR Lab Known Lab result Code TLD Type Date Measurement Value +/- 2 Sigma Control Limits Teledyne Brown Engineering 2000-1 LiF-100 Chips Mar, 2000 Reader 1, #1 17.8 14.4 +/-0.2 12.46 - 23.14 LiF-100 Chips Mar, 2000 Reader 1, #2 35.5 32.4 +/-0.1 24.85 - 46.15 2000-1 Mar, 2000 Reader 1, #3 62.2 61.8 +/- 0.9 43.54 - 80.86 2000-1 LiF-100 Chips Teledyne Brown Engineering 2000-2 CaSO,: Dy Cards Mar, 2000 Reader 1, #1 17.8 21.3 +/- 0.3 12.46 - 23.14 2000-2 CaSO4 : Dy Cards Mar, 2000 Reader 1, #2 35.5 40.1 +/- 1.9 24.85 - 46.15 2000-2 CaSO,: Dy-Cards Mar, 2000 Reader 1, #3 62.2 69.9 +/-3.5 43.54 - 80.86 Chips and cards irradiated by Teledyne Brown Engineering, Westwood, New Jersey, in March of 2000.

12th International Intercomparison 022-1 CaSO4: Dy Cards Jun, 2000 Field 161.0 184.9 +/-1.9 112.70- 209.30 CaSO,: Dy Cards Jun, 2000 Field 1 548.0 502.2 +/- 1.7 383.60 - 712.40 022-1 Jun, 2000 Field 2 391.0 412.0 +/- 2.9 273.70 - 508.30 022-1 CaSO4 : Dy Cards Jun, 2000 Field 3 623.0 643.2 +/- 2.9 436.10 - 809.90 022-1 CaSO,: Dy Cards Jun, 2000 Lab, 1 391.0 442.8 +/- 2.5 273.70 - 508.30 022-1 CaSO4 : Dy Cards Environmental, Inc.

2001-1 CaSO4 : Dy Cards Dec, 2001 Reader 1, #1 4.0 3.7 +/- 0.1 2.79- 5.17 Dec, 2001 Reader 1,#1 4.0 3.4 +/- 0.1 2.79-5.17 2001-1 CaSO4 : Dy Cards Dec, 2001 Reader 1,#2 7.1 7.9 +/- 0.2 4.95-9.19 2001-1 CaSO4 : Dy Cards Dec, 2001 Reader 1, #2 7.1 7.6 +/- 0.3 4.95-9.19 2001-1 CaSO,: Dy Cards Dec, 2001 Reader 1, #3 15.9 18.6 +/-0.4 11.13- 20.67 2001-1 CaSO,: Dy Cards Dec, 2001 Reader 1,#3 15.9 19.6+/- 0.1 11.13- 20.67 2001-1 CaSO,: Dy Cards Dec, 2001 Reader 1, #4 63.6 78.2 +/- 1.2 44.53 - 82.69 2001-1 CaSO4 : Dy Cards Dec, 2001 Reader 1, #4 63.6 79.9 +/- 2.5 44.53 - 82.69 2001-1 CaSO,: Dy Cards A2-1 -- page 55 of 122 --

Table A-3. In-house "spike" samples.

Concentration in pCi/L3 Lab Sample Date Laboratory results Known Controlo Code Type Collected Analysis 2s, n=lb Activity Limits SPAP-477 Air Filte r Jan, 2001 Cs-137 1.76+/- 0.02 1.68 1.01 -2.35 SPW-479 Water Jan, 2001 H-3 54702.00+/-644.00 54549.00 43639.20 - 65458.80 SPW-481 Water Jan, 2001 Gr. AlphE 58.08 +/- 2.79 69.14 34.57 - 103.71 SPW-481 Water Jan, 2001 Gr. Beta 213.83 +/- 3.07 220.26 198.23 - 242.29 SPW-482 Water Jan, 2001 Gr. Alpha 51.77+/-2.18 69.14 34.57 - 103.71 SPW-482 Water Jan, 2001 Gr. Beta 202.48 +/-2.98 220.26 198.23 - 242.29 Water Jan, 2001 Ra-226 20.11 +/- 0.34 20.86 14.60 - 27.12 SPW-483 SPW-483 Water Jan, 2001 Ra-228 10.55 +/- 2.02 19.43 13.60 - 25.26 Sample was lost durirng analysis. Insufficient samplle available to perform reanalysis.

Water Jan, 2001 Co-60 33.53+/-3.40 31.13 21.13 -41.13 SPW-485 Water Jan, 2001 Cs-134 32.80+/-2.54 30.81 20.81 - 40.81 SPW-485 Water Jan, 2001 Cs-1 37 42.10+/- 5.60 36.00 26.00 - 46.00 SPW-485 SPW-485 Water Jan, 2001 Sr-90 154.34+/-3.49 137.66 110.13 - 165.19 SPAP-754 Air Filte r Jan, 2001 Gr. Beta 8.53 +/- 0.02 7.88 -2.12 - 17.88 Water Feb, 2001 U-233/4 3.74 +/- 0.10 4.17 2.50-5.84 SPW-1037 Water Feb, 2001 U-238 3.81 +/-0.10 4.17 -7.83 - 16.17 SPW-1 037 SPW-1224 Water Feb, 2001 Ra-226 21.25+/- 0.50 20.68 14.48 - 26.88 Water Feb, 2001 Ra-228 21.76+/-2.65 19.27 13.49 - 25.05 SPW-1 224 Water Feb, 2001 Gr. Alph a 71.87 +/- 3.07 69.14 34.57 - 103.71 SPW-1 225 SPW-1 225 Water Feb, 2001 Gr. Beta 36.30 +/-1.47 28.75 18.75 - 38.75 Feb,2001 1-131 56.82 +/-0.71 63.05 50.44 - 75.66 SPW-1272 Water Feb, 2001 1-131 (g) 65.69 +/-10.21 63.05 53.05 - 73.05 SPW-1 272 Water SPVE-1 274 Vegetation Feb,2001 1-131(g) 0.78 +/- 0.05 0.76 0.45 - 1.06 Charco al Feb, 2001 1-131(g) 1.57 +/- 0.05 1.58 0.95-2.21 SPCH-1276 Milk Mar, 2001 Cs-134 31.89 +/- 4.71 29.77 19.77 - 39.77 SPM1-1270 Milk Mar, 2001 Cs-1 37 46.61 +/- 8.81 35.90 25.90 - 45.90 SPM1-1270 The Cs-1 37 spike is suspect; A new cesium spike has been prepared. Reference to SPMI-3232.

Milk Mar, 2001 1-131(g) 81.92+/-10.80 81.95 71.95 - 91.95 SPM1-1270 Urine Mar, 2001 H-3 51512.00+/- 1369.00 50189.00 40151.20 - 60226.80 SPU-2901 Waterr Mar, 2001 Ra-228 29.92+/-5.13 31.75 22.23 -41.28 SPW-2161 Urine Apr, 2001 H-3 2065.00 +/- 408.00 2008.00 1317.37 - 2698.63 SPU-3128 SPW-3129 Water Apr, 2001 Gr. Alpha 37.94 +/- 2.42 34.57 17.29 - 51.86

-- page 56 of 122 --

A3-1

Table A-3. In-house "spike" samples.

Concentration in pCi/La Lab Sample Date Laboratory results Known Controlc Code Type Collected Analysis 2s, n=lb Activity Limits SPW-3129 Water Apr, 2001 Gr. Beta 117.83 +/- 2.37 109.46 98.51 - 120.41 Air Filter Apr, 2001 Gr. Beta 0.80 +/- 0.01 0.78 -9.22 - 10.78 SPAP-3508 Milk Apr, 2001 Cs-1 34 32.69 +/- 6.50 33.96 23.96 - 43.96 SPMI-3232 Milk Apr, 2001 Cs-1 37 44.20 +/- 9.08 35.79 25.79 - 45.79 SPMI-3232 SPMI-3232 Milk Apr, 2001 1-131 48.05 +/- 0.90 56.68 45.34 - 68.02 Milk Apr, 2001 1-131(g) 55.64 +/- 11.39 56.68 46.68 - 66.68 SPMI-3232 Milk Apr, 2001 Sr-90 143.77 +/- 3.04 136.82 109.46 - 164.18 SPMI-3232 Soil Apr, 2001 Co-60 18.49 +/- 0.21 19.57 9.57 - 29.57 SPSO-3356 Apr, 2001 Cs-1 37 18.71 +/- 0.24 16.61 6.61 - 26.61 SPSO-3356 Soil Air Filter Apr, 2001 Cs-1 37 1.80 +/- 0.01 1.67 1.00 - 2.34 SPAP-3359 Water Apr, 2001 Co-60 48.17 +/-4.85 45.19 35.19 - 55.19 SPW-3376 Water Apr, 2001 Cs-134 37.14 +/- 3.90 33.96 23.96 - 43.96 SPW-3376 Water Apr, 2001 Sr-90 159.84 +/- 3.42 136.82 109.46 - 164.18 SPW-3376 Water Apr, 2001 1-131 68.60 +/- 2.63 85.02 68.02 - 102.02 SPW-3377 Water May, 2001 Gr. Alpha 37.94 +/- 2.42 34.57 17.29 - 51.86 SPW-3129/1 Water May, 2001 Gr. Beta 117.83 +/- 2.37 109.46 98.51 - 120.41 SPW-3129/1 Water Jun, 2001 Gr. Alpha 34.42+/-2.14 34.57 17.29 - 51.86 SPW-3129/2 Water Jun, 2001 Gr. Beta 119.99 +/- 2.45 109.46 98.51 - 120.41 SPW-3129/2 Vegetation Jun, 2001 1-131(g) 0.81 +/- 0.03 0.86 0.51 -1.20 SPVE-3303 Soil Jul, 2001 Co-60 17.42 +/-0.19 19.05 9.05 - 29.05 SPSO-5701 Soil Jul, 2001 Cs-1 37 16.03 +/- 0.22 16.52 6.52 - 26.52 SPSO-5701 Water Jul, 2001 Co-60 250.05 +/-18.63 233.26 209.93 - 256.59 SPW-5779 Water Jul, 2001 Cs-1 37 178.68 +/- 19.89 175.91 158.32 - 193.50 SPW-5779 Water Jul, 2001 Sr-90 72.12+/- 2.24 68.12 54.50 - 81.74 SPW-5779 Fish Jul, 2001 Co-60 1.87 +/- 0.08 1.79 1.07-2.51 SPF-5781 Fish Jul, 2001 Cs-1 37 1.43 +/- 0.07 1.39 0.83-1.95 SPF-5781 Water Jul, 2001 H-3 51177.00 +/- 631.00 50189.00 40151.20 - 60226.80 SPW-5937 Water Jul, 2001 Ra-226 36.62 +/- 1.74 34.46 24.12 - 44.80 SPW-59441 Water Jul, 2001 Ra-228 41.46 +/- 6.44 36.06 25.24 - 46.88 SPW-59441 Air Filter Jul, 2001 Cs-1 37 1.81 +/- 0.02 1.67 1.00 -2.34 SPAP-5703 Water Jul, 2001 Gr. Alpha 35.31 +/- 3.04 34.75 17.38 - 52.13 SPW-3129/3

-- page 57 of 122 --

A3-2

Table A-3. In-house "spike" samples.

Concentration in pCi/La Lab Sample Date Laboratory results Known Controlc Code Type Collected Analysis 2s, n=lb Activity Limits SPW-3129/3 Water Jul, 2001 Gr. Beta 113.28 +/-3.65 109.46 98.51 - 120.41 SPMI-6145 Milk Jul, 2001 Cs-137 188.45+/- 19.10 175.91 158.32 - 193.50 SPW-6604 Water Jul, 2001 Gr. Alpha 35.36 +/-11.94 34.57 17.29 - 51.86 SPW-6604 Water Jul, 2001 Gr. Beta 112.56 +/-2.46 108.82 97.94- 119.70 SPW-9008 Water Oct, 2001 H-3 48285.00+/-606.10 50189.00 40151.20- 60226.80 SPAP-901 0 Air Filter Oct, 2001 Cs-1 37 1.91 +/- 0.01 1.67 1.00 - 2.34 SPW-1 0723 Water Dec, 2001 U-233/4 40.12+/- 1.09 41.73 25.04 - 58.42 SPW-1 0723 Water Dec, 2001 U-238 40.16 +/- 1.09 41.73 29.21 - 54.25 SPAP-1 1550 Air Filter Dec, 2001 Gr. Beta 1.58 +/- 0.02 1.56 -8.44 - 11.56 SPW-11757 Water Dec, 2001 Co-60 43.82 +/-3.14 41.36 31.36- 51.36 SPW-1 1757 Water Dec, 2001 Cs-134 24.11 +/-2.42 22.59 12.59 - 32.59 SPW-11757 Water Dec, 2001 Cs-137 52.11 +/-4.40 50.89 40.89 - 60.89 SPMI-11759 Milk Dec, 2001 Cs-134 28.03+/-+2.64 27.10 17.10 - 37.10 SPMI-11759 Milk Dec, 2001 Cs-137 54.59+/- 5.08 50.89 40.89- 60.89 SPF-11761 Fish Dec, 2001 Cs-134 0.94 +/-0.02 0.90 0.54- 1.26 SPF-11761 Fish Dec, 2001 Cs-137 1.43 +/- 0.04 1.43 0.86-2.00 "aAll results are in pCi/L, except for elemental potassium (K) in milk, which are in mg/L.; air filter samples, which are in pCi/Filter; and food products, which are in pCi/kg.

bResults are based on single determinations.

c Control limits are based on Attachment A, Page A2 of this report.

NOTE: For fish, Jello is used for the spike matrix. For vegetation, coleslaw is used for the spike matrix.

-- page 58 of 122--

A3-3

Tabie A-4. In-house "blank" samples.

Concentration pCi/L'.

Laboratory results Acceptance Sample (4.66 Sigma) Criteria Lab Sample Code Type Date Analysis LLD Activity' (4.66 Sigma)

SPAP-478 AIR FILTER Jan 2001 Co-60 <1. 12 <100.0 SPAP-478 AIR FILTER Jan 2001 Cs-1 34 <1. 66 <100.0 SPAP-478 AIR FILTER Jan 2001 Cs-1 37 <2.46 <100.0 SPW-480 WATER Jan 2001 H-3 < 162. 00 -1.86 +/- 80.40 <200.0 SPW-484 WATER Jan 2001 Gr. Alpha <0. 68 <1.0 SPW-484 WATER Jan 2001 Gr. Beta <1. 35 <3.2 SPW-484 WATER Jan 2001 Ra-226 <0. 02 0.03 +/- 0.01 <1.0 SPW-484 WATER Jan 2001 Ra-228 <0. 97 0.43 +/- 0.50 <2.0 SPW-486 WATER Jan 2001 Co-60 <2. 68 <10.0 SPW-486 WATER Jan 2001 Cs-1 34 <3. 46 <10.0 SPW-486 WATER Jan 2001 Cs-1 37 <5,.43 <10.0 SPW-486 WATER Jan 2001 Sr-90 <0..65 0.06 +/-0.31 <1.0 SPAP-755 AIR FILTER Jan 2001 Gr. Beta <1. .60 0.16 +/- 0.90 <3.2 SPW-1 038 WATER Feb 2001 U-238 <0..03 <1.0 SPW-1038 WATER Feb 2001 U-238 <0..00 <1.0 SPW-1223 WATER Feb 2001 Gr. Alpha <0..46 <1.0 SPW-1 223 WATER Feb 2001 Gr. Beta <1 .50 <3.2 SPW-1 223 WATER Feb 2001 Ra-226 <0 .02 0.03 +/-0.01 <1.0 SPW-1 223 WATER Feb 2001 Ra-228 <0 .95 0.45 +/- 0.49 <2.0 SPMI-1268 MILK Feb 2001 Cs-1 34 <5 .86 <10.0 SPM1-1268 MILK Feb 2001 Cs-1 37 <3 .02 <10.0 SPM1-1268 MILK Feb 2001 1-131 (g) <7 .46 <20.0 SPW-1271 WATER Feb 2001 Co-60 <1 .06 <10.0 SPW-1271 WATER Feb 2001 Cs-134 <2 .61 <10.0 SPW-1271 WATER Feb 2001 Cs-137 <2 .37 <10.0 SPVE-1273 VEGETATION Feb 2001 Cs-134 <10 .04 <100.0 SPVE-1273 VEGETATION Feb 2001 Cs-1 37 <6 .00 <100.0 SPCH-1 275 CHARCOAL Feb 2001 1-131(g) <0 .01 <9.6 CANISTER SPW-2164 WATER Mar 2001 Ra-226 < 0.02 0.05 +/- 0.01 <1.0 SPU-3126 URINE Apr2001 H-3 < 642.00 -66.00 +/- 335.00 <200.0 2.0 ml. sample volume.

A4-1 -- page 59 of 122 --

Table A-4. In-house "blank" samples.

Concentration pCi/La.

Laboratory results Acceptance Lab Criteria Sample Sample (4.66 Sigma)

Code Type Date Analysis LLD Activity' (4.66 Sigma)

SPDW-3130 WATER Apr2001 Gr. Alpha < 0.54 0.04 +/- 0.38 <1.0 SPDW-3130 WATER Apr2001 Gr. Beta < 1.46 0.67 +/- 1.04 <3.2 SPMI-3233 MILK Apr2001 Cs-1 37 < 2.66 <10.0 SPMI-3233 MILK Apr2001 1-131 < 0.26 -0.06 +/-0.14 <0.5 SPMI-3233 MILK Apr2001 1-131(g) < 3.91 <20.0 SPMI-3233 MILK Apr2001 Sr-89 < 0.79 -0.32 +/- 0.79 <5.0 SPMI-3233 MILK Apr2001 Sr-90 1.18 +/-0.35 <1.0 Low levels of Sr-90 are still detected in the environment. A concentration of (1-5 pCi/L) in milk is not unusual.

SPSO-3357 SOIL Apr 2001 Cs-134 < 14.77 <100.0 SPSO-3357 SOIL Apr 2001 Cs-1 37 < 11.72 <100.0 SPAP-3358 AIR FILTER Apr 2001 Cs-1 37 < 0.55 <100.0 SPW-3375 WATER Apr 2001 Co-60 < 2.90 <10.0 SPW-3375 WATER Apr 2001 Cs-1 34 < 3.71 <10.0 SPW-3375 WATER Apr 2001 1-131(g) < 0.39 0.02 +/- 0.22 <20.0 SPW-3375 WATER Apr 2001 Sr-90 < 0.56 0.05 +/- 0.27 <1.0 SPDW-3130 WATER May 2001 Gr. Alpha < 0.45 0.15 +/-0.34 <1.0 SPDW-3130 WATER May 2001 Gr. Beta < 1.26 0.34 +/- 0.95 <3.2 SPDW-3130 WATER Jun 2001 Gr. Alpha < 0.44 0.09 +/- 0.32 <1.0 SPDW-3130 WATER Jun 2001 Gr. Beta < 1.46 0.66 +/- 1.04 <3.2 SPVE-3304 VEGETATION Jun 2001 Co-60 < 7.06 <100.0 SPVE-3304 VEGETATION Jun 2001 Cs-1 34 < 11.56 <100.0 SPVE-3304 VEGETATION Jun 2001 Cs-1 37 < 8.30 <100.0 SPSO-5702 SOIL Jul 2001 Co-60 < 12.80 <100.0 SPSO-5702 SOIL Jul 2001 Cs-134 < 13.96 <100.0 SPSO-5702 SOIL Jul 2001 Cs-1 37 <8.10 <100.0 AIR FILTER Jul 2001 Co-60 < 0.79 <100.0 SPAP-5704 AIR FILTER Jul 2001 Cs-1 34 < 0.84 <100.0 SPAP-5704 AIR FILTER Jul 2001 Cs-1 37 < 0.60 <100.0 SPAP-5704 WATER Jul 2001 Co-60 < 1.86 <10.0 SPW-5780 WATER Jul 2001 Cs-1 34 < 2.46 <10.0 SPW-5780 WATER Jul 2001 Cs-1 37 < 3.77 <10.0 SPW-5780 A4-2 -- page 60 of 122 --

Table A-4. In-house "blank" samples.

Concentration pCi/La.

Laboratory results Acceptance Lab Sample Sample (4.66 Sigma) Criteria Code Type Date Analysis LLD Activity? (4.66 Sigma)

SPF-5782 FISH Jul 2001 Co-60 < 5.64 <100.0 SPF-5782 FISH Jul 2001 Cs-1 34 <7.51 <100.0 SPW-5938 WATER Jul 2001 H-3 < 163.22 -16.21 +/-85.07 <200.0 SPW-59451 WATER Jul 2001 Ra-226 < 0.01 0.04 +/-0.01 <1.0 SPW-59451 WATER Jul 2001 Ra-228 < 0.77 0.70 +/- 0.44 <2.0 SPDW-3130 WATER Jul 2001 Gr. Alpha < 0.54 0.36 +/- 0.40 <1.0 SPDW-3130 WATER Jul 2001 Gr. Beta < 2.27 -0.78 +/- 1.35 <3.2 SPMI-6146 MILK Jul 2001 Sr-90 < 0.50 1.09 +/- 0.36 <1.0 Low levels of Sr-90 are still detected in the environment. A concentration of (1-5 pCi/L) in milk is not unusual.

SPW-6605 WATER Jul 2001 Gr. Beta < 1.34 0.55 +/- 1.01 <3.2 SPW-9009 WATER Oct 2001 H-3 < 160.00 -56.70 +/- 76.50 <200.0 SPAP-9011 AIR FILTER Oct 2001 Co-60 < 0.76 <100.0 SPAP-9011 AIR FILTER Oct 2001 Cs-137 < 0.58 <100.0 SPW-5780 WATER Oct 2001 Sr-90 < 0.54 0.36 +/- 0.30 <1.0 SPW-10724 WATER Dec 2001 U-238 <0.13 0.04 +/- 0.10 <1.0 SPAP-1 1549 AIR FILTER Dec 2001 Gr. Beta < 0.00 0.01 +/- 0.00 <3.2 SPW-1 1756 WATER Dec 2001 Cs-1 37 < 2.62 <10.0 SPMI-11758 MILK Dec 2001 Cs-1 37 < 4.00 <10.0 SPMI-1 1758 MILK Dec 2001 1-131(g) < 16.57 <20.0 SPF-11760 FISH Dec 2001 Cs-1 37 < 7.96 <100.0 "aLiquid sample results are reported in pCi/Liter, air filter sample results are in pCi/filter, charcoal sample results are in pCi/charcoal, and solid sample results are in pCi/kilogram.

b The activity reported is the net activity result.

A4-3 -- page 61 of 122 --

Table A-5. In-house "duplicate" samples.

Concentration in pCi/La Lab Sample First Second Averaged Codes DLat Analysis ResUI.L Result ResuIl AP-10675, 10676 Jan, 2001 Be-7 0.06 +/- 0.02 0.06 +/- 0.02 0.06 +/- 0.01 AP-10803, 10804 Jan, 2001 Be-7 0.04 +/- 0.01 0.04 +/- 0.01 0.04 +/- 0.01 AP-10833, 10834 Jan, 2001 Be-7 0.04 +/- 0.01 0.04 +/- 0.01 0.04 +/- 0.01 WW-51, 52 Jan, 2001 H-3 362.60 +/- 94.70 417.20 +/- 96.80 389.90 +/- 67.71 MI-72, 73 Jan, 2001 K-40 1,566.90 +/- 196.80 1,372.40 +/- 152.50 1,469.65 +/- 124.49 MI-96, 97 Jan, 2001 K-40 1,418.30 +/- 117.80 1,545.70 +/- 162.50 1,482.00 +/-100.35 U-858, 859 Jan, 2001 Gr. Beta 2.17 +/-2.47 4.23 +/- 2.74 3.20 +/- 1.84 MI-389, 390 Jan, 2001 K-40 1,489.20+/- 141.10 1,463.30 +/- 168.20 1,476.25 +/- 109.77 DW-879, 880 Jan, 2001 Gr. Beta 2.63 +/- 0.52 2.37 +/- 0.50 2.50 +/- 0.36 SWU-813, 814 -. Jan, 2001 Gr. Beta 2.48 +/- 0.58 2.46 +/- 0.63 2.47 +/- 0.43 MI-708,709 Feb, 2001 K-40 1,179.40+/- 103.00 1,280.40 +/- 90.26 1,229.90 +/- 68.48 MI-740, 741 Feb, 2001 1-131 0.01 +/- 0.26 -0.12 +/-0.26 -0.05 +/- 0.18 MI-740, 741 Feb, 2001 K-40 1,434.00 +/- 156.50 1,435.00 +/- 126.10 1,434.50 +100.49 MI-789, 790 Feb, 2001 K-40 1,584.30 +/- 158.80 1,390.70 +/- 136.50 1,487.50 +104.70 DW-901, 902 Feb, 2001 Gr. Beta 4.67 +/- 1.08 5.54+/- 1.13 5.11 +/-0.78 SWU-1544, 1545 Feb, 2001 Gr. Beta 3.13+/- 0.63 2.33 +/- 0.52 2.73 +/- 0.41 DW-1426, 1427 Feb, 2001 Gr. Beta 2.05 +/- 0.92 2.34 +/- 0.93 2.20 +/- 0.65 DW-1426, 1427 Feb, 2001 H-3 42.60 +/- 94.23 131.31 +/- 95.34 86.96 +/- 67.02 WW-1476, 1477 Feb, 2001 H-3 53.06 +/- 65.79 53.06 +/- 93.03 53.06 +/- 56.97 MI-1523, 1524 Mar, 2001 1-131 -0.01 +/-0.20 -0.10 +/-0.37 -0.06 +/- 0.21 MI-1523, 1524 Mar, 2001 K-40 1,396.00 +/- 184.80 1,576.00 +/- 184.90 1,486.00 +/-130.71 MI-1572, 1573 Mar, 2001 K-40 1,499.20 +/- 113.30 1,326.00 +/- 118.80 1,412.60 +/- 82.08 MI-1572, 1573 Mar, 2001 Sr-90 1.65 +/- 0.44 1.51 +/- 0.52 1.58 +/- 0.34 SW-1648, 1649 Mar, 2001 K-40 297.80 +/- 67.20 344.80 +/- 82.30 321.30 +/- 53.13 MI-1800, 1801 Mar, 2001 K-40 1,425.80 +/-183.30 1,372.20+/-119.70 1,399.00 +/- 109.46 SW-1 779, 1780 Mar, 2001 Gr. Alpha 2.22 +/- 0.73 2.14 +/- 0.69 2.18+/- 0.50 SW-1 779, 1780 Mar, 2001 Gr. Beta 6.28 +/- 0.74 6.62 +/- 0.70 6.45 +/- 0.51 MI-1447, 1448 Mar, 2001 1-131 -0.65 +/- 0.27 0.13 +/- 0.55 -0.26 +/- 0.31 MI-1447, 1448 Mar, 2001 K-40 1,496.20 +/-155.40 1,413.40 +/- 169.60 1,454.80 +/- 115.01 WW-2115, 2116 Mar, 2001 H-3 540.04 +/- 111.84 500.85 +/-110.46 520.44 +/- 78.59 SW-1698, 1699 Mar, 2001 Gr. Beta 6.07 +/- 1.75 5.57 +/- 1.85 5.82 +/- 1.27 DW-2272, 2273 Mar, 2001 Gr. Beta 2.10 +/- 0.86 1.63 +/- 0.83 1.87 +/- 0.60 WW-2356, 2357 Mar, 2001 Gr. Beta 1.22 +/- 0.50 1.32+/- 0.47 1.27 +/- 0.35 AP-2812, 2813 Mar, 2001 Be-7 0.07 +/- 0.02 0.05 +/- 0.01 0.06 +/- 0.01 AP-2812, 2813 Mar, 2001 Be-7 0.07 +/- 0.02 0.05 +/- 0.01 0.06 +/- 0.01 LW-2217, 2218 Mar, 2001 Gr. Beta 1.85 +/- 0.51 2.23 +/- 0.55 2.04 +/- 0.37

-- page 62 of122 --

A5-1

Table A-5. In-house "duplicate" samples.

Concentration in pCi/L" Lab Sample First Second Averaged n + 0 VO;Ul1+ M 4 ItL Codes Mar,20 Analysis r U )Ul rFXUZ)

AP-2833, 2834 Mar, 2001 Be-7 0.04 +/- 0.01 0.06 +/- 0.02 0.05 +/- 0.01 AP-3038, 3039 Mar, 2001 Be-7 0.07 +/- 0.02 0.07 +/- 0.02 0.07 +/- 0.01 AP-3038, 3039 Mar, 2001 Be-7 0.06 +/- 0.02 0.07 +/- 0.01 0.07 +/- 0.01 DW-2398, 2399 Mar, 2001 Gr. Beta 1.58 +/- 0.89 1.81 +/- 0.88 1.69 +/- 0.63 LW-2467, 2468 Mar, 2001 Gr. Beta 2.52 +/- 0.53 2.42 +/- 0.53 2.47 +/- 0.37 MI-2446, 2447 Apr, 2001 K-40 1,285.40+/-177.10 1,376.00 + 175.90 1,330.70+/- 124.81 AP-3017, 3018 Apr, 2001 Be-7 0.05 +/- 0.01 0.05+/-0.01 0.05 +/- 0.00 SW-2423, 2424 Apr, 2001 K-40 255.60 +/- 59.80 268.40 +/- 65.40 262.00 +/- 44.31 BS-3103, 3104 Apr, 2001 Gr. Beta 7.99 +/- 1.80 8.17+/-1.73 8.08 +/-1.25 SWU-3239, 3240 Apr, 2001 Gr. Beta 3.30 +/- 0.60 4.30 +/- 0.74 3.80 +/- 0.48 SS-3322, 3323 Apr, 2001 K-40 15.99 +/- 1.08 15.59+/-1.01 15.79 +/- 0.74 W-3990, 3991 Apr, 2001 Sr-89 91.35 +/- 18.94 85.29 +/- 23.99 88.32 +/-15.28 BS-4347, 4348 Apr, 2001 K-40 3,982.40 +/- 489.60 3,255.80 +/- 450.10 3,619.10+/- 332.53 BS-4347, 4348 Apr, 2001 K-40 3.26 +/- 0.45 3.98 +/- 0.49 3.62 +/- 0.33 MI-3364, 3365 May, 2001 K-40 1,325.90+/- 160.20 1,453.20 +163.00 1,389.55 +/- 114.27 SO-3385, 3386 May, 2001 Gr. Alpha 6.51 +/- 3.09 9.01 +/- 3.44 7.76 +/- 2.31 SO-3385, 3386 May, 2001 Gr. Beta 24.63 +/- 3.15 28.17+/- 3.12 26.40 +/- 2.22 SO-3385, 3386 May, 2001 K-40 19.17+ 1.08 17.94 +/- 0.76 18.56 +/- 0.66 CL-4068, 4069 May, 2001 K-40 1.09 +/- 0.27 1.13+/- 0.23 1.11 +/-0.18 MI-3475, 3476 May, 2001 Gr. Beta 1,297.10+/- 114.60 1,433.60 +/- 156.60 1,365.35 + 97.03 WW-3545, 3546 May, 2001 Gr. Beta 1.57 +/- 0.55 1.36 +/- 0.53 1.47 +/- 0.38 MI-3681, 3682 May, 2001 K-40 1,417.20 +/- 125.70 1,496.20 +/-124.50 1,456.70 +/- 88.46 SW-3702, 3703 May, 2001 Gr. Alpha 4.51 +/- 1.66 3.22 +/- 1.55 3.87 +/- 1.13 SW-3702, 3703 May, 2001 Gr. Beta 8.74+/- 1.36 7.11 +/- 1.38 7.93 +/- 0.97 BS-4021, 4022 May, 2001 Cs-1 37 224.30 +/- 30.20 205.90 +/- 43.00 215.10 +/-26.27 BS-4021, 4022 May, 2001 H-3 842.00 +/- 47.00 860.00 +/- 48.00 851.00 +/- 33.59 BS-4021, 4022 May, 2001 K-40 21,117.00 +/-953.00 21,629.00 +/- 1,357.00 21,373.00+/- 829.10 BS-4021, 4022 May, 2001 Pu-238 80.30 +/- 36.50 59.50 +/- 22.00 69.90 +/- 21.31 BS-4021, 4022 May, 2001 Pu-239/40 49.40 +/- 31.80 41.10+/-19.60 45.25+/- 18.68 BS-4021, 4022 May, 2001 Ra-226 7,436.00 +/- 577.90 9,126.00 +/-751.90 8,281.00 +/- 474.16 BS-4021, 4022 May, 2001 Sr-90 10.60 +/- 2.71 16.80 +/- 3.22 13.70 +/-2.10 F-3813, 3814 May, 2001 K-40 2.10+/- 0.17 2.30 +/- 0.26 2.20 +/-0.16 G-4158, 4159 May, 2001 Be-7 0.37 +/- 0.13 0.41 +/- 0.14 0.39+/- 0.10 Ac-228 0.45 +/- 0.13 0.52+/- 0.14 0.49 +/- 0.10 SO-4179, 4180 May, 2001 Bi-214 0.31 +/- 0.06 0.41 +/- 0.06 0.36 +/- 0.04 SO-4179, 4180 May, 2001 SO-4179, 4180 May, 2001 Cs-137 0.46 +/- 0.05 0.47 +/- 0.04 0.47 +/- 0.03

--page 63of122 --

A5-2

Table A-5. In-house "duplicate" samples.

Concentration in pCi/L8 Lab Sample First Second Averaged Codes 0 tv Analysis rh.uI Ult ' UILtesUIL SO-4179, 4180 May, 2001 Gr. Beta 26.65 +/- 2.63 24.68 +/- 2.52 25.67 +/-1.82 SO-4179, 4180 May, 2001 K-40 16.35 +/- 0.86 16.05+/- 0.82 16.20 +/- 0.59 SO-4179, 4180 May, 2001 Pb-212 0.35 +/- 0.04 0.43 +/- 0.05 0.39 +/- 0.03 SO-4179, 4180 May, 2001 Ra-226 0.56 +/- 0.98 1.03 +/- 0.31 0.79+/- 0.51 SO-4179, 4180 May, 2001 TI-208 0.14 +/-0.03 0.17+/- 0.03 0.15+/- 0.02 BS-4233, 4234 May, 2001 Cs-137 0.03 +/- 0.01 0.03 +/- 0.02 0.03 +/- 0.01 BS-4233, 4234 May, 2001 K-40 8.18+/- 0.48 7.80 +/- 0.58 7.99 +/- 0.38 SWU-4376, 4377 May, 2001 Gr. Beta 2.58 +/- 0.55 2.94 +/- 0.58 2.76 +/- 0.40 DW-4449,4450 May, 2001 Gr. Beta 2.83 +/- 0.55 3.74 +/- 0.65 3.29 +/- 0.43 DW-4397,4398 May, 2001 Gr. Beta 9.13+/- 1.26 10.20 +/- 1.34 9.66 +/- 0.92 MI-4114, 4115 May, 2001 K-40 1,325.90 +/- 118.80 1,394.70 +/- 133.10 1,360.30 +/- 89.20 F-4284, 4285 May, 2001 K-40 2.23 +/- 0.32 2.12+/- 0.35 2.18+/- 0.24 DW-4326, 4327 Jun, 2001 Gr. Beta 2.60 +/- 0.97 1.47 +/- 0.83 2.04 +/- 0.64 MI-4470,4471 Jun, 2001 K-40 1,514.50 +/- 116.60 1,456.80 +/- 130.90 1,485.65 +/- 87.65 SW-4493,4494 Jun, 2001 Gr. Beta 4.05+/-1.23 4.64 +/-1.32 4.35 +/- 0.90 BS-4725, 4726 Jun, 2001 Co-60 112.00+/-24.30 84.50 +/- 8.70 98.25 +/-12.91 BS-4725,4726 Jun, 2001 Cs-1 37 3,083.10+/- 100.10 3,094.80 +/- 35.30 3,088.95 +/- 53.07 BS-4725,4726 Jun, 2001 K-40 8,143.70 +/- 640.40 8,083.80 +/- 225.10 8,113.75 +/- 339.40 MI-4775, 4776 Jun, 2001 K-40 1,362.20 +/- 71.80 1,363.90 +/-73.40 1,363.05+ 51.34 WW-5110, 5111 Jun, 2001 H-3 1,173.50 +/-129.10 1,046.80 +/-125.20 1,110.15+89.92 G-5085,5086 Jun, 2001 Be-7 0.89 +/- 0.17 1.14+/- 0.39 1.02 +/- 0.21 G-5085,5086 Jun, 2001 K-40 5.13+/- 0.39 5.22 +/- 0.70 5.17+/- 0.40 MI-5259, 5260 Jun, 2001 K-40 1,529.70 +/- 122.70 1,406.20+/-123.80 1,467.95 +/- 87.15 MI-5259, 5260 Jun, 2001 Sr-90 1.69 +/- 0.42 1.71 +/- 0.44 1.70 +/- 0.30 SWU-5422,5423 Jun, 2001 Gr. Beta 2.59 +/- 0.54 1.91 +/- 0.52 2.25 +/- 0.37 VE-5401, 5402 Jun, 2001 Gr. Beta 8.12 +/-0.24 8.88 +/- 0.26 8.50 +/-0.18 VE-5401, 5402 Jun, 2001 K-40 6.55 +/- 0.52 6.26 +/- 0.65 6.40 +/- 0.42 AP-5830, 5831 Jun, 2001 Be-7 0.08 +/- 0.01 0.08 +/- 0.01 0.08 +/- 0.01 SW-5557, 5558 Jun, 2001 Gr. Beta 5.43 +/- 1.70 5.96 +/- 1.56 5.70+/- 1.15 AP-5851, 5852 Jun, 2001 Be-7 0.07 +/- 0.02 0.07 +/- 0.02 0.07 +/- 0.01 SW-5636, 5637 Jun, 2001 Gr. Beta 4.75 +/- 1.38 4.18++/-1.34 4.47 +/- 0.96 LW-5681, 5682 Jun, 2001 Gr. Beta 2.42 +/- 0.37 2.18+/- 0.34 2.30 +/- 0.25 G-5535,5536 Jul, 2001 Be-7 0.99 +/- 0.29 0.97 +/- 0.54 0.98 +/- 0.31 G-5535,5536 Jul, 2001 Gr. Beta 7.62 +/- 0.12 7.72+/- 0.12 7.67 +/- 0.08 G-5535,5536 Jul, 2001 K-40 7.26 +/- 1.03 7.64 +/- 0.93 7.45 +/- 0.69 AP-5788, 5789 Jul, 2001 Be-7 0.08 +/- 0.02 0.07 +/- 0.02 0.08 +/- 0.01

-- page 64of 122 --

A5-3

Table A-5. In-house "duplicate" samples.

Concentration in pCi/La Lab Sample First Second Averaged L . 13 . 1 Codes Analysis VOU Kesuit KesUIL Jul 2001 AP-5872, 5873 Be-7 0.07 +/- 0.02 0.08 +/- 0.02 0.07 +/- 0.01 Jul, 2001 AP-5893, 5894 Be-7 0.08 +/- 0.02 0.08 +/- 0.01 0.08 +/- 0.01 Jul, 2001 AP-5809, 5810 Be-7 0.07 +/- 0.02 0.06 +/- 0.01 0.06 +/- 0.01 Jul, 2001 SW-5724, 5725 Gr. Alpha 2.95 +/- 0.70 2.89 +/- 0.60 2.92 +/- 0.46 Jul, 2001 SW-5724, 5725 Gr. Beta 8.79 +/- 0.71 8.21 +/- 0.65 8.50 +/- 0.48 Jul, 2001 SW-5767, 5768 1-131 0.79 +/- 0.31 0.61 +/- 0.26 0.70 +/- 0.20 Jul, 2001 LW-5920, 5921 Gr. Beta 3.06 +/- 0.64 3.15+/- 0.58 3.11 +/-0.43 Jul, 2001 SO-6172, 6173 Cs-1 37 0.30 +/- 0.05 0.32 +/- 0.04 0.31 +/- 0.03 Jul, 2001 SO-6172, 6173 K-40 18.20+/-1.08 17.55 +/- 0.82 17.88 +/- 0.68 Jul, 2001 SO-6172, 6173 Sr-90 0.03 +/- 0.01 0.05 +/- 0.02 0.04 +/- 0.01 Jul, 2001 MI-6353, 6354 K-40 966.35 +/- 82.28 986.31 +/- 91.91 976.33 +/- 61.68 Jul, 2001 SW-6376, 6377 1-131 0.58 +/- 0.16 0.81 +/- 0.17 0.70+/- 0.12 Jul, 2001 VE-6424, 6425 Gr. Beta 2.52 +/- 0.05 2.49 +/- 0.05 2.51 +/- 0.03 Jul, 2001 VE-6424, 6425 K-40 3.04 +/- 0.26 3.12 +/-0.37 3.08 +/- 0.23 Jul, 2001 MI-6445,6446 K-40 1,407.40 +/- 97.10 1,442.20 +/-189.60 1,424.80 +/- 106.51 Jul, 2001 LW-6489, 6490 Gr. Beta 2.61 +/- 0.57 2.79 +/- 0.54 2.70 +/- 0.39 Jul, 2001 MI-6533, 6534 K-40 1,498.60+/-113.90 1,375.50 +/- 129.60 1,437.05 +/- 86.27 Jul, 2001 DW-6835, 6836 Gr. Beta 2.01 +/-0.59 2.36 +/- 0.63 2.19+/-0.43 Aug, 2001 MI-6693, 6694 K-40 1,294.30 +/- 118.70 1,417.30+/-176.50 1,355.80 +/- 106.35 Aug, 2001 MI-6693, 6694 Sr-90 1.47 +/- 0.42 1.23 +/- 0.41 1.35 +/- 0.29 Aug, 2001 WW-6952, 6953 Gr. Beta 5.49 +/- 0.69 5.80 +/- 0.69 5.64 +/- 0.49 Aug, 2001 MI-6906,6907 K-40 1,613.80 +/- 218.50 1,532.70 +/- 135.80 1,573.25 +/-128.63 Aug, 2001 VE-6973, 6974 K-40 4.21 +/- 0.24 4.29 +/- 0.64 4.25 +/- 0.34 Aug, 2001 LW-7851, 7852 Gr. Beta 2.20 +/- 0.48 2.12+/-0.42 2.16+/- 0.32 Aug, 2001 MI-7001, 7002 K-40 1,453.80 +/-148.10 1,285.30 +/- 190.50 1,369.55+/-120.65 Aug, 2001 MI-7073, 7074 K-40 1,217.30 +/- 80.83 1,218.30 +/- 99.13 1,217.80 +/- 63.95 Aug, 2001 LW-7145, 7146 Gr. Beta 2.77 +/- 0.53 3.60 +/- 0.59 3.19+/- 0.39 Aug, 2001 MI-7221, 7222 K-40 1,192.90 +/- 95.40 1,388.90+/- 132.70 1,290.90+/- 81.72 Aug, 2001 MI-7221, 7222 Sr-90 2.10+/- 0.48 1.72 +/- 0.47 1.91 +/- 0.34 Aug, 2001 SWU-7527,7528 Gr. Beta 17.51 +/- 3.06 20.36 +/- 3.31 18.93 +/- 2.25 Aug, 2001 VE-7485, 7486 K-40 2.12 +/-0.47 2.47 +/- 0.34 2.30 +/- 0.29 Aug, 2001 DW-7506, 7507 Gr. Beta 4.25+/- 1.18 4.132+/-1.12 4.19 +/- 0.81 Sep, 2001 MI-7622, 7623 K-40 1,340.10+/- 111.10 1,290.80 +/- 116.50 1,315.45 +/- 80.49 Sep, 2001 MI-7664, 7665 K-40 1,408.10 +/- 102.70 1,396.90 +/- 114.30 1,402.50 + 76.83 Sep, 2001 MI-7876, 7877 K-40 1,416.40 +/- 192.30 1,318.00 +/- 155.50 1,367.20 +/- 123.65 Sep, 2001 G-7960,7961 Be-7 1.27 +/- 0.21 1.25 +/- 0.25 1.26 +/-0.16

-- page 65of122 --

A5-4

Table A-5. In-house "duplicate" samples.

Concentration in pCi/LU Lab Sample First Second Averaged Codes UaLe Analysis R'.tsulL R'esuIt ResuIl G-7960, 7961 Sep, 2001 K-40 5.21 +/-0.57 5.70 +/- 0.63 5.45 +/- 0.43 F-8011, 8012 Sep, 2001 Cs-137 0.06 +/- 0.02 0.04 +/- 0.02 0.05 +/- 0.01 F-8011, 8012 Sep, 2001 Gr. Beta 3.68 +/- 0.12 3.50+/- 0.11 3.59 +/- 0.08 F-8011, 8012 Sep, 2001 K-40 3.47 +/- 0.49 3.38 +/- 0.47 3.43 +/- 0.34 MI-8149, 8150 Sep, 2001 K-40 1,551.70 +/- 118.00 1,489.90 +/-123.60 1,520.80 +/- 85.44 MI-8343, 8344 Sep, 2001 K-40 1,550.30 +/- 170.60 1,368.10+/- 126.70 1,459.20 +/- 106.25 VE-8319, 8320 Sep, 2001 Gr. Beta 3.37+/- 0.10 3.42 +/- 0.11 3.39 +/- 0.07 VE-8319, 8320 Sep, 2001 K-40 2.14+/- 0.46 2.24 +/- 0.37 2.19 +/- 0.29 AP-9069, 9070 Sep, 2001 Be-7 0.07 +/- 0.02 0.07 +/- 0.01 0.07 +/- 0.01 AP-9566, 9567 -. Sep, 2001 Be-7 0.08 +/- 0.02 0.09 +/- 0.03 0.09 +/- 0.02 VE-8700, 8701 Oct, 2001 Be-7 0.24 +/- 0.10 0.19 +/- 0.10 0.22 +/- 0.07 VE-8700, 8701 Oct, 2001 K-40 2.03 +/- 0.24 2.03 +/- 0.21 2.03+/- 0.16 VE-8700, 8701 Oct, 2001 Sr-90 0.01 +/- 0.00 0.01 +/-0.00 0.01 +/- 0.00 AP-9048, 9049 Oct, 2001 Be-7 0.07 +/-0.01 0.07 +/- 0.00 0.07 +/- 0.01 DW-8636, 8637 Oct, 2001 Gr. Beta 4.74 +/- 1.06 5.08 +/-1.21 4.91 +/- 0.80 DW-8615, 8616 Oct, 2001 Gr. Beta 4.65 +/- 0.58 4.28 +/- 0.54 4.47 +/- 0.40 AP-9090, 9091 Oct, 2001 Be-7 0.07 +/- 0.01 0.07 +/- 0.01 0.07 +/- 0.01 AP-9166, 9167 Oct, 2001 Be-7 0.08 +/- 0.02 0.08 +/- 0.02 0.08 +/- 0.01 AP-9187, 9188 Oct, 2001 Be-7 0.07 +/- 0.01 0.05 +/- 0.01 0.06 +/- 0.01 VE-10562,10563 Oct, 2001 Be-7 309.90 +/-158.80 348.30+/- 168.10 329.10 +/-115.62 VE-10562, 10563 Oct, 2001 K-40 6,407.10 +/- 620.70 6,057.50 +/- 660.40 6,232.30 +/- 453.15 WW-8636,8637 Oct, 2001 Gr. Beta 5.08 +/- 1.20 4.74 +/- 1.06 4.91 +/- 0.80 DW-8894, 8895 Oct, 2001 Gr. Beta 4.28 +/- 0.89 3.40 +/- 0.90 3.84 +/- 0.63 MI-9232, 9233 Oct, 2001 K-40 1,440.70 +/- 46.60 1,424.80 +/- 76.40 1,432.75+44.75 VE-9518, 9519 Oct, 2001 K-40 1.91 +/- 0.22 1.97 +/- 0.39 1.94 +/- 0.22 WW-10257,10258 Nov, 2001 H-3 755.90 +/- 102.50 684.70 +/- 99.90 720.30 +/- 71.57 VE-10333, 10334 Nov, 2001 Be-7 0.68 +/- 0.26 0.99 +/- 0.26 0.84 +/- 0.18 VE-10333, 10334 Nov, 2001 K-40 6.10 +/-0.72 5.83 +/- 0.72 5.97 +/- 0.51 MI-10588, 10589 Nov, 2001 K-40 1,428.40 +/- 114.70 1,445.50 +129.40 1,436.95 +/- 86.46 DW-10688,10689 Nov, 2001 Gr. Beta 3.49 +/- 0.91 2.36 +/- 0.76 2.93 +/- 0.60 WW-10905,10906 Dec, 2001 H-3 233.90 +/- 90.60 226.30 +/- 90.20 230.10 +/- 63.92 SS-1 0953, 10954 Dec, 2001 Ac-228 1.10+/- 0.25 0.91 +/- 0.16 1.00 +/- 0.15 SS-10953, 10954 Dec, 2001 Bi-214 0.69 +/- 0.08 0.75 +/- 0.08 0.72 +/- 0.06 SS-10953, 10954 Dec, 2001 Co-58 0.21 +/- 0.05 0.18+/- 0.04 0.19+/- 0.03 SS-10953, 10954 Dec, 2001 Co-60 0.93 +/- 0.06 0.94 +/- 0.06 0.93 +/- 0.04 SS-10953, 10954 Dec, 2001 Cs-1 37 0.13+/- 0.03 0.16 +/- 0.03 0.14+/- 0.02

--page 66of122 --

A5-5

Table A-5. In-house "duplicate" samples.

Concentration in pCi/L3 Lab Sample First Second Averaged Codes Date Analysis Result Result Result SS-10953,10954 Dec, 2001 K-40 9.91 +/- 0.83 8.36 +/- 0.80 9.13 +/- 0.57 SS-1 0953, 10954 Dec, 2001 Pb-212 0.94 +/- 0.05 0.91 +/- 0.06 0.92 +/- 0.04 SS-1 0953, 10954 Dec, 2001 Pb-214 0.83 +/- 0.08 0.82+/- 0.07 0.83+/- 0.05 SS-10953, 10954 Dec, 2001 Ra-226 1.76 +/- 0.37 1.67 +/- 0.37 1.72 +/- 0.26 SS-10953,10954 Dec, 2001 TI-208 0.34 +/- 0.05 0.31 +/- 0.05 0.32 +/- 0.04 MI-11033, 11034 Dec, 2001 K-40 1,339.80+/-128.70 1,435.80 +/- 117.30 1,387.80 +/- 87.07 MI-11033, 11034 Dec, 2001 Sr-90 1.31 +/- 0.41 1.38 +/- 0.37 1.35 +/- 0.28 AP-11888, 11889 Dec, 2001 Be-7 0.06 +/- 0.02 0.06 +/- 0.02 0.06 +/- 0.01 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 elemental potassium (K) in milk (mg/L), air filters (pCi/Filter), food products and vegetation (pCi/g), soil and sediments (pCi/kg).

-- page 67of122 --

A5-6

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

Concentrationb Lab Sample Date MAPEP Result8 Control Code Type Collected Analysis Laboratory resultc Is, N=1 Limits STSO-923 SOIL Jan, 2001 Am-241 0.0 - 2.6 Included in the testing series as a "false positive". No activity expected. Result of analysis; < 0.8 Bq/L.

STSO-923 SOIL Jan, 2001 Co-57 100.2 3.5 103.0+/- 10.3 72.1 -133.9 STSO-923 SOIL Jan, 2001 Co-60 1,285.1 +/- 5.3 1,270.0+/- 127.0 889.0- 1,651.0 SOIL Jan, 2001 Cs-1 34 81.1 +/-1.8 91.1 +/- 9.1 63.8 - 118.4 STSO-923 STSO-923 SOIL Jan, 2001 Cs-1 37 1,210.6 +/- 6.6 1,240.0+/- 124.0 868.0 - 1,612.0 SOIL Jan, 2001 K-40 732.6 +/- 21.2 652.0+/- 65.2 456.4 - 847.6 STSO-923 SOIL Jan, 2001 Mn-54 212.6 +/- 6.7 203.0+/- 20.3 142.1 - 263.9 STSO-923 SOIL Jan, 2001 Pu-238 110.7 +/- 7.2 115.0+/- 11.5 80.5- 149.5 STSO-923 SOIL Jan, 2001 Pu-239/40 79.6+/- 5.9 83.4+/- 8.3 58.4- 108.4 STSO-923 SOIL Jan, 2001 Sr-90 159.8+/- 9.5 209.0+/- 20.9 146.3 - 271.7 STSO-923 SOIL Jan, 2001 U-233/4 45.0 +/- 3.9 60.0+/- 6.0 42.0 - 78.0 STSO-923 SOIL Jan, 2001 U-238 165.6 +/- 7.4 191.0+/- 19.1 133.7 - 248.3 STSO-923 SOIL Jan, 2001 Zn-65 428.5+/-10.9 382.0+/- 38.2 267.4 - 496.6 STSO-923 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.

b All 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, 1 determination) and control limits as defined by the MAPEP.

A6-1 -- page 68 of 122 --

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

Concentration Lab Sample Date Control Code Type Collected Analysis Laboratory result EML Resultc Limitsd STSO-904 SOIL Mar, 2001 Ac-228 45.60 +/- 4.0 42.70 0.80- 1.50 SOIL Mar, 2001 Am-241 14.40 +/-0.5 14.80 0.63 - 2.64 STSO-904 Bi-212 53.20 +/- 3.1 42.00 0.45- 1.23 STSO-904 SOIL Mar, 2001 a probable cause Naturally-occurring radium and thorium daughters are present in the shield background, and of the higher bias seen for isotopes of lead and bismuth.

Bi-214 42.10+/-7.7 32.60 0.78- 1.50 STSO-904 SOIL Mar, 2001 Cs-1 37 1,772.60 +/- 79.8 1,740.00 0.80- 1.29 STSO-904 SOIL Mar, 2001 K-40 583.80 +/- 52.6 468.00 0.80 - 1.37 STSO-904 SOIL Mar, 2001 Pb-212 46.60 +/-8.5 41.50 0.74-1.36 STSO-904 SOIL Mar, 2001 Pb-214 45.30+/-8.6 34.30 0.76- 1.53 STSO-904 SOIL Mar, 2001 Pu-239/40 26.00 +/- 0.8 25.60 0.71 - 1.33 STSO-904 SOIL Mar, 2001 55.60+/-2.2 69.00 0.61 - 3.91 STSO-904 SOIL Mar, 2001 Sr-90 Am-241 2.15 +/- 0.1 1.67 0.76-1.48 STW-905 WATER Mar, 2001 97.00 +/- 0.8 98.20 0.80 - 1.20 STW-905 WATER Mar, 2001 Co-60 Cs-137 70.10+/-4.0 73.00 0.80-1.20 STW-905 WATER Mar, 2001 H-3 76.50 +/- 5.5 79.30 0.74 - 2.29 STW-905 WATER Mar, 2001 Pu-238 1.69+/- 0.1 1.58 0.74- 1.22 STW-905 WATER Mar, 2001 Pu-239/40 1.69+/- 0.1 1.64 0.75- 1.26 STW-905 WATER Mar, 2001 3.85+/- 0.1 4.40 0.64- 1.50 STW-905 WATER Mar, 2001 Sr-90 0.90+/- 0.1 1.04 0.80- 1.40 STW-905 WATER Mar, 2001 U-233/4 U-238 0.88 +/-0.1 1.04 0.80 - 1.29 STW-905 WATER Mar, 2001 1,724.60+/-141.7 1,900.00 0.58-1.26 STW-906 WATER Mar, 2001 Gr. Alpha 1,246.40 +/-31.1 1,297.00 0.56-1.50 STW-906 WATER Mar, 2001 Gr. Beta 0.47+/- 0.0 0.49 0.69 - 2.40 STAP-907 AIR FILTER Mar, 2001 Am-241 20.11 +/- 0.2 19.44 0.79 - 1.30 STAP-907 AIR FILTER Mar, 2001 Co-60 2.71 +/-0.2 2.83 0.74-1.21 STAP-907 AIR FILTER Mar, 2001 Cs-1 34 9.86+/-0.2 8.76 0.78- 1.35 STAP-907 AIR FILTER Mar, 2001 Cs-1 37 7.25 +/- 0.2 6.52 0.80- 1.36 STAP-907 AIR FILTER Mar, 2001 Mn-54 0.23 +/-0.0 0.22 0.66-1.35 STAP-907 AIR FILTER Mar, 2001 Pu-238 0.12+/-0.0 0.14 0.69 - 1.29 STAP-907 AIR FILTER Mar, 2001 Pu-239/40 A7-1 -- page 69 of 122 --

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

Concentration b Lab Sample Date Control Code Type Collected Analysis Laboratory result EML Result' Limits" STAP-907 AIR FILTER Mar, 2001 Sr-90 7.41+/-0.2 7.10 0.55 - 2.05 STAP-907 AIR FILTER Mar, 2001 U-233/4 0.05 +/- 0.0 0.05 0.80-1.92 STAP-907 AIR FILTER Mar, 2001 U-238 0.05 +/- 0.0 0.05 0.80- 1.59 STAP-908 AIR FILTER Mar, 2001 Gr. Alpha 2.66 +/- 0.0 3.97 0.57-1.47 STAP-908 AIR FILTER Mar, 2001 Gr. Beta 2.30 +/- 0.0 2.58 0.76-1.52 STVE-909 VEGETATION Mar, 2001 Am-241 6.10+/-0.2 6.17 0.72 - 2.34 STVE-909 VEGET,'ATION Mar, 2001 Cm-244 3.50+/- 0.5 3.69 0.61 - 1.61 STVE-909 VEGETATION Mar, 2001 Co-60 28.50+/-2.1 30.40 0.75- 1.51 STVE-909 VEGETATION Mar, 2001 Cs-1 37 795.50 +/- 76.4 842.00 0.80- 1.37 STVE-909 VEGETATION Mar, 2001 K-40 592.60 +/- 42.5 603.00 0.78- 1.43 STVE-909 VEGETATION Mar, 2001 Pu-239/40 8.50 +/- 0.6 9.58 0.67-1.49 STVE-909 VEGETATION Mar, 2001 Sr-90 1,239.60 +/- 130.0 1,330.00 0.52- 1.23 STW-925 WATER Sep, 2001 Am-241 0.70+/-0.1 0.76 0.76 - 1.48 STW-925 WATER Sep, 2001 Co-60 206.70 +/- 4.7 209.00 0.80- 1.20 STW-925 WATER Sep, 2001 Cs-1 37 46.60 +/- 0.8 45.13 0.80 - 1.24 STW-925 WATER Sep, 2001 H-3 254.10+/- 3.6 207.00 0.74 - 2.29 STW-925 WATER Sep, 2001 Ni-63 50.90 +/- 3.0 45.25 0.70- 1.30 STW-925 WATER Sep, 2001 Pu-238 1.10+/-0.1 1.09 0.74-1.22 STW-925 WATER Sep, 2001 Pu-239/40 1.60+/-0.1 1.63 0.75- 1.26 STW-925 WATER Sep, 2001 Sr-90 4.10+/-0.3 3.73 0.64-1.50 STW-925 WATER Sep, 2001 Uranium 2.20 +/- 0.2 2.37 0.73- 1.37 STW-926 WATER Sep, 2001 Gr. Alpha 1,220.00 +/- 32.0 1,150.00 0.58- 1.26 STW-926 WATER Sep, 2001 Gr. Beta 8,461.00 +/- 206.0 7,970.00 0.56-1.50 STSO-927 SOIL Sep, 2001 Ac-228 68.10+/-1.4 59.57 0.80-1.50 STSO-927 SOIL Sep, 2001 Am-241 5.20 +/- 1.3 4.43 0.63 - 2.64 STSO-927 SOIL Sep, 2001 Bi-212 65.10+/-1.6 62.07 0.45- 1.23 STSO-927 SOIL Sep, 2001 Bi-214 47.30 +/- 4.7 36.90 0.78- 1.50 STSO-927 SOIL Sep, 2001 Cs-1 37 659.20 +/- 10.8 612.33 0.80-1.29 STSO-927 SOIL Sep, 2001 K-40 737.70 +/- 16.6 623.33 0.80-1.37 A7 -2 -- page 70 of 122 --

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

Concentration b Lab Sample Date Control Code Type Collected Analysis Laboratory result EML Resultc Limits' STSO-927 SOIL Sep, 2001 Pb-212 64.70 +/- 3.8 58.33 0.74-1.36 STSO-927 SOIL Sep, 2001 Pb-214 53.70 +/- 7.7 39.67 0.76- 1.53 STSO-927 SOIL Sep, 2001 Pu-239/40 9.30 +/- 2.9 8.95 0.71 -1.33 STSO-927 SOIL Sep, 2001 Sr-90 27.40 +/- 6.3 30.60 0.61 - 3.91 STSO-927 SOIL Sep, 2001 Uranium 155.60 +/- 7.8 194.23 0.62-1.35 STVE-928 VEGETATION Sep, 2001 Am-241 7.00 +/- 0.3 6.92 0.72 - 2.34 STVE-928 VEGETATION Sep, 2001 Cm-244 4.30 +/- 0.8 4.31 0.61 -1.61 STVE-928 VEGETATION Sep, 2001 Co-60 40.20 +/- 0.9 35.30 0.75- 1.51 STVE-928 VEGETATION Sep, 2001 Cs-137 1,184.00 +/- 2.8 1,030.00 0.80- 1.37 STVE-928 VEGETATION Sep, 2001 K-40 1,023.00 +/- 44.1 898.67 0.78- 1.43 STVE-928 VEGETATION Sep, 2001 Pu-239/40 8.90 +/-1.4 11.02 0.67-1.49 STVE-928 VEGETATION Sep, 2001 Sr-90 1,364.00 +/- 18.4 1,612.80 0.52-1.23 STAP-929 AIR FILTER Sep, 2001 Am-241 0.09 +/- 30.0 0.09 0.69 - 2.40 STAP-929 AIR FILTER Sep, 2001 Co-60 16.90 +/- 0.3 17.50 0.79- 1.30 STAP-929 AIR FILTER Sep, 2001 Cs-1 34 11.80 +/- 0.2 12.95 0.74-1.21 STAP-929 AIR FILTER Sep, 2001 Cs-1 37 18.30 +/- 0.3 17.10 0.78-1.35 STAP-929 AIR FILTER Sep, 2001 Mn-54 85.40 +/- 1.3 81.15 0.80- 1.36 STAP-929 AIR FILTER Sep, 2001 Pu-238 0.05 +/- 0.0 0.07 0.66- 1.35 STAP-929 AIR FILTER Sep, 2001 Pu-239/40 0.22 +/- 0.0 0.23 0.69- 1.29 STAP-929 AIR FILTER Sep, 2001 Sr-90 3.11 +/-0.1 3.48 0.55 - 2.05 STAP-929 AIR FILTER Sep, 2001 Uranium 0.24 +/-0.1 0.22 0.80 - 2.54 STAP-930 AIR FILTER Sep, 2001 Gr. Alpha 6.30 +/-0.1 5.36 0.57 - 1.47 STAP-930 AIR FILTER Sep, 2001 Gr. Beta 13.80 +/-0.1 12.77 0.76-1.52 "aThe Environmental Measurements Laboratory provides the following nuclear species : Air Filters, Soil, Vegetation and Water.

b Results are reported in Bq/L with the following exceptions: Air Filter results are reported in Bq/Filter, Soil results are reported in Bq/Kg, Vegetation results are reported in Bq/Kg.

CThe EML result listed is the mean of replicate determinations for each nuclide+/-the standard error of the mean.

"dControllimits are reported by EML as the ratio of Reported Value / EML value.

A7-3 -- page 71 of 122 --

APPENDIX B REMP ANNUAL

SUMMARY

-- page 72 of 122 --

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 529 Air 10 Weekly 519 Beta Bt PAirtcle Particulate Gamma Quarterly 40 Isotopic Composite Air Iodine 10 Weekly 519 Iodine"' Weekly 529 Direct Quarterly Gamma Radiation 54 Quarterlyt216yGamm (TLD) (continuous) Exposure Quarterly 216 Gamma Monthly 12 Isotopic Surface Water 1 Monthly 12 Tritium Quarterly 4 (Grab) Composite Gross Monthly 12 Beta Gamma Monthly 12 Isotopic Gross Monthly 12 Surface Beta Water (Effluent Monthly 12 Gross Monthly 12 Composite) Alpha Tritium Quarterly 4 Composite Iodine 131 Monthly 12 Number of samples analyzed does not include duplicate analysis, recounts, or reanalysis.

-- page 73 of 122 --

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*

Gamma Monthly 22 Isotopic Surface Gross Beta Monthly 22 Water 2 Monthly 22 (Upstream Gross Monthly Composite) Alpha 22 Quarterly Tritium Composite 8 Iodine 1 31 Quarterly 12 Gross Quarterly 12 Alpha Well Water 2a Quarterly 12 Gross Beta Quarterly 12 Gamma Quarterly 12 Isotopic Tritium Quarterly 12 Gross Monthly 12 Alpha Drinking 1 Monthly 12 Gross Beta Monthly 12 Water Gamma Monthly 12 Isotopic Tritium Quarterly 4 Composite Number of samples analyzed does not include duplicate analysis, recounts, or reanalysis.

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

-- page 74 of 122 --

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*

Gross Semi- 4 Alpha Annually Gross Semi- 4 ShorelineSei Srediment 2 Semi- 4Beta Annually Sediment Annually Gamma Semi Isotopic Annually Sr 90 Semi- 4 Annually Monthly Gamma Grass 4 Semi- 56 Isotopic Monthly I 56 Monthllyb (including Semi-Monthly 1131)

Gross Monthly 48 Monthly Beta Vegetables 4 (during 48 Gamma Monthly 48 growing Isotopic season) (including 1131)

Fish 2 Semi- 1 Gamma Semi- 16 Annually 16 Isotopic Annually Gamma Monthly / 19 Isotopic Semi-Monthly Monthly / Iodine 13 1 Monthly / 19 Milk 1 Semi- 19 Monthlyb Semi-Monthly Sr90 Monthly / 19 Semi-Monthly

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

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

-- page 75 of 122 --

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 2001 (county, state)

Medium or Type of All Location Control Pathway Analysis Indicator with Highest Locations Sampled Locations: Annual Total Mean Numberof (Unit of Number Limit of Mean (f) Mean (f)

Measurem ent) P erform ed D t ci n (R ange) Nam e- Non-routine Detection (Rne aeReported - -- --- R p r e (LLD) Distance - (Range) Measurements Direction Mean (f)

(Range)_

18.1 CL-81 16.9 Direct Gamma 4.5 miles (16/16)

Radiation dose (00 WNW 0 (mRem/qtr) 216 (13.1 19.9 (4/4) (15.05 a Hha21.9) (17.6- 21.0) 19.5) a Highest quarterly mean Gross - 0.025 CL-8 0.026 0 Beta (467/467)b 2.2 miles E (52/52)

(.006 Air 519 .060) .027 (52/52) (0.010 Particulates (.008 - .060) 0.055)

Gamma 3

(pCi/m ) Spec 40 Cs 1 34 0.0012 LLD LLD 0 Cs 1 37 0.0013 LLD LLD 0 b Values excluded due to insufficient volume collected. Refer to Appendix D for exceptions.

Air Iodine 1131 0.07 LLD LLD 0 3

(pCi/Im ) 519 Note: Column explanations are at the end of Table B-2.

-- page 76 of 122 --

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 2.9 (12/12) CL-13 3.6 NA 0 12 (2.3 - 3.7) miles SW 2.9 (12/12)

(2.3-3.7)

Tritium 184 LLD - NA 0 4

Gamma Surface Water Spec Surface12 Grab (pCi/I)

Mn54 6.3 LLD - NA 0 FeS9 12.7 LLD - NA 0 Coss 6.9 LLD - NA 0 Co 6 6.7 LLD - NA 0 Zn6 5 12.3 LLD - NA 0 N b95 9.1 LLD - NA 0 Zr95 15.5 LLD - NA 0 Cs 1,3 4 7.0 LLD - NA 0 137 Cs 6.4 LLD - NA 0 Ba 140 55.6 LLD - NA 0 La 140 14.8 LLD NA 0 Note: Column explanations are at the end of Table B-2.

-- page 77 of 122 --

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 3.0 (34/34) CL-99 3.5 NA 0 34 (1.1 -7.8) Miles NNE 3.4(11/11)

(1.1 -7.8)

Tritium 184 LLD - NA 0 4

1131 0.5 LLD - NA 0 12 Surface Water Composite Gamma (pCi/I) Spec 34 Mn54 5.9 LLD - NA 0 Fe59 13.4 LLD - NA 0 Co58 5.6 LLD - NA 0 Co60 7.0 LLD - NA 0 Zn65 14.3 LLD - NA 0 Nb 95 7.2 LLD - NA 0 Zr9s 13.9 LLD - NA 0 Cs 1 34 6.5 LLD - NA 0 137 Cs 7.0 LLD - NA 0 Ba140 59.7 LLD - NA 0 La14 0 13.8 LLD - NA 0 Note: Column explanations are at the end of Table B-2.

-- page 78 of 122 --

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 (12/12) CL-14 NA 0 12 (0.9-2.1) 0 Miles 1.4 (12/12)

(0.9-2.1)

Tritium 184 LLD NA 0 4

Gamma Drinking Spec Water (pCi/I) 12 Mn54 5.3 LLD - NA 0 Fe 59 11.5 LLD - NA 0 Co 5 8 5.4 LLD - NA 0 Co 60 6.6 LLD - NA 0 Zn65 10.4 LLD - NA 0 Nb 95 6.0 LLD - NA 0 Zr 95 12.6 LLD - NA 0 Cs"34 6.2 LLD - NA 0 Cs 1 37 5.9 LLD - NA 0 Ba1 40 59.7 LLD - NA 0 La1 40 13.0 LLD - NA 0 Note: Column explanations are at the end of Table B-2.

-- page 79 of 122 --

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 2.2 2.3 (4/12) CL-12T* NA 0 12 (1.9-2.4) 1.6 Miles E 2.4 (2/4)

(2.4 - 2.4) 1131 0.4 LLD NA 0 12 Tritium 182 LLD NA 0 4

Gamma Well Water Spec (pCi/I) Spec 12 Mn54 6.0 LLD - NA 0 Fe59 13.4 LLD - NA 0 Co 5 8 5.2 LLD - NA 0 Co 6 ° 5.4 LLD - NA 0 Zn65 8.0 LLD - NA 0 Nb 95 9.7 LLD - NA 0 Zr95 9.9 LLD - NA 0 Cs134 5.0 LLD - NA 0 Cs 1 37 6.2 LLD - NA 0 Ba140 57.7 LLD - NA 0 La 140 12.4 LLD - NA 0

  • (T) treated well water sample Note: Column explanations are at the end of Table B-2.

-- page 80 of 122 --

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

Mean (f) g _ _ I _ _ I __ (Range) 11 1 1101 0.5 LLD NA 0 19 Gamma Spec Milk (pCi/I) 19 Cs 134 8.6 LLD - NA 0 Cs 1 37 8.7 LLD - NA 0 Ba140 32.7 LLD - NA 0 La140 9.44 LLD - NA 0 Gamma Spec 16 Mn54 0.051 LLD - NA 0 Fish (pCi/g Fe 59 0.123 LLD - NA 0 wet) Co58 0.062 LLD - NA 0 Co60 0.029 LLD - NA 0 Zn65 0.075 LLD - NA 0 Cs 1' 34 0.051 LLD NA 0 Cs1 37 0.029 LLD NA 0 Gamma Shoreline Spec Sediments (pCi/g dry) Cs134 0.032 LLD NA 0 Cs137 0.018 LLD NA 0 Note: Column explanations at the end of Table B-2.

-- page 81 of 122--

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

Mean (f)

(Range)

Gamma Spec Vegetables 48 (pCi/g wet) 1131 0.050 LLD NA 0 Cs 1 34 0.041 LLD NA 0 Cs1 37 0.035 LLD NA 0 Gamma Spec Grass (pCi/g 56 dry) 1131 0.050 LLD NA 0 34 Cs' 0.036 LLD NA 0 Cs 1 37 0.030 LLD NA 0 Note: Column explanations at the end of Table B-2.

-- page 82 of 122 --

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

Performed Mean (f)

(Range)

Column 1 Column 21 Column 31 Column 41 Column 51 Column 6 Column 7 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/m 3 . Abbreviations used are: pCi/mn 3 = pico-curie per cubic meter of sampled air; mRem/quarter = exposure measured for calendar quarter period; pCi/I = 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 (H-) 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 83 of 122 --

TABLE B-2 (continued)

Location with Highest 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 1I Column 2 Column 3 Column 4 Column 5 Column 6 Column 77I 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 gaseous effluent stack. The 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 84 of 122 --

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 which 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 85 of 122 --

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 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 86 of 122 --

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.

-- page 87 of 122 --

APPENDIX D Exceptions to the REMP During 2001 Data from the radiological analysis of environmental samples are routinely reviewed and evaluated by the Chemistry Department 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 CPS-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 malfunction[s] 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 2001, 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 CPS ODCM (refer to Table 3-B of this report). Sampling and analysis exceptions are listed in this appendix.

-- page 88 of 122 --

SAMPLING AND ANALYSIS EXCEPTIONS FOR 2001 The exceptions described in this section are those that are considered deviations from the Radiological Environmental Monitoring Program as required by the ODCM. This section addresses the reporting requirements of Section 7.1 of the ODCM.

[1] 28 March 2001 Although Surface Water Sample[s] CL-91 and CL-99 were properly collected, packaged and shipped to our Laboratory for analysis, both of these Water Samples were damaged during transit. Upon arrival at the Laboratory Facility, said samples arrived damaged [leaking] such that an adequate volume for analysis was not possible. CPS captured this event as part of their Corrective Actions Program under Condition Report Number 2-01-04-046.

[2] 28 November 2001

  • Upon the weekly Air Sample / Filter Cartridge change-out at Air Sample Station CL-15, there was no electrical power. Additional testing at the station revealed that all electrical power was de-energized. After further troubleshooting, it was subsequently determined that a fuse had blown and was replaced. Because the minimum air volume was not obtained from this Air Sampling Station as a result of the blown fuse, this sample was not included in the 2001 Annual Report. CPS captured this event as part of their Corrective Actions Program under Condition Report Number 84348.

-- page 89 of 122 --

APPENDIX E CPS Radiological Environmental Monitoring Results During 2001

-- page 90 of 122 --

TABLE 1 GROSS BETA ACTIVITY IN AIR PARTICULATES FOR 2001 (pCilm 3 )

DATE COLLECTED CL-1 CL-2 CL-3 CL-4 CL-6 10-Jan-01 0.035 +/- 0.004 0.035 +/- 0.004 0.036 +/- 0.004 0.032 +/- 0.004 0.033 +/- 0.004 17-Jan-01 0.030 +/- 0.004 0.029 +/- 0.004 0.039 +/- 0.004 0.027 +/- 0.004 0.030 +/- 0.004 24-Jan-01 0.041 +/- 0.004 0.039 +/- 0.004 0.043 +/- 0.005 0.039 +/- 0.005 0.039 +/- 0.004 31-Jan-01 0.026 +/- 0.004 0.023 +/- 0.003 0.028 +/- 0.004 0.026 +/- 0.004 0.029 +/- 0.004 07-Feb-01 0.032 +/- 0.004 0.031 +/- 0.004 0.029 +/- 0.004 0.034 +/- 0.004 0.032 +/- 0.004 14-Feb-01 0.024 +/- 0.003 0.022 +/- 0.002 0.022 +/- 0.003 0.025 +/- 0.003 0.027 +/- 0.004 21-Feb-01 0.033 +/- 0.004 0.032 +/- 0.003 0.033 +/- 0.004 0.033 +/- 0.004 0.040 +/- 0.004 28-Feb-01 0.024 +/- 0.004 0.026 +/- 0.004 0.025 +/- 0.004 0.029 +/- 0.004 0.029 +/- 0.004 07-Mar-01 0.028 +/- 0.004 0.026 +/- 0.004 0.026 +/- 0.004 0.027 +/- 0.004 0.027 +/- 0.004 14-Mar-01 0.020 +/- 0.003 0.021 +/- 0.003 0.021 +/- 0.003 0.021 +/- 0.003 0.022 +/- 0.003 22-Mar-01 0.017 +/- 0.003 0.018 +/- 0.003 0.017 +/- 0.003 0.017 +/- 0.003 0.015 +/- 0.003 28-Mar-01 0.020 +/- 0.004 0.025 +/- 0.004 0.019 +/- 0.004 0.021 +/- 0.004 0.025 +/- 0.004 04-Apr-01 0.023 +/- 0.003 0.026 +/- 0.003 0.023 +/- 0.003 0.025 +/- 0.003 0.025 +/- 0.003 11-Apr-01 0.025 +/- 0.004 0.021 +/- 0.003 0.018 +/- 0.003 0.019 +/- 0.003 0.024 +/- 0.003 18-Apr-01 0.019 +/- 0.003 0.018 +/- 0.003 0.017 +/- 0.003 0.019 +/- 0.004 0.018 +/- 0.003 25-Apr-01 0.026 +/- 0.003 0.027 +/- 0.003 0.026 +/- 0.003 0.022 +/- 0.003 0.025 +/- 0.003 02-May-01 0.026 +/- 0.004 0.030 +/- 0.004 0.027 +/- 0.004 0.019 +/- 0.004 0.027 +/- 0.004 09-May-01 0.022 +/- 0.003 0.024 +/- 0.003 0.026 +/- 0.004 0.021 +/- 0.003 0.027 +/- 0.004 16-May-01 0.021 +/- 0.004 0.027 +/- 0.004 0.024 +/- 0.004 0.026 +/- 0.004 0.026 +/- 0.003 23-May-01 0.021 +/- 0.003 0.019 +/- 0.003 0.022 +/- 0.004 0.025 +/- 0.004 0.018 +/- 0.003 30-May-01 0.009 +/- 0.003 0.011 +/- 0.003 0.010 +/- 0.003 0.010 +/- 0.003 0.007 +/- 0.003 06-Jun-01 0.011 +/- 0.003 0.011 +/- 0.003 0.011 +/- 0.003 0.013 +/- 0.003 0.011 +/- 0.003 13-Jun-01 0.026 +/- 0.004 0.026 +/- 0.004 0.026 +/- 0.004 0.024 +/- 0.004 0.025 +/- 0.004 20-Jun-01 0.024 +/- 0.003 0.025 +/- 0.003 0.025 +/- 0.004 0.025 +/- 0.004 0.026 +/- 0.004 27-Jun-01 0.022 +/- 0.003 0.025 +/- 0.003 0.022 +/- 0.003 0.019 +/- 0.003 0.020 +/- 0.003 03-Jul-01 0.022 +/- 0.004 0.026 +/- 0.004 0.022 +/- 0.004 0.019 +/- 0.004 0.022 +/- 0.004 11-Jul-01 0.023 +/- 0.004 0.021 +/- 0.003 0.018 +/- 0.003 0.018 +/- 0.003 0.023 +/- 0.004 18-Jul-01 0.023 +/- 0.004 0.025 +/- 0.004 0.022 +/- 0.004 0.017 +/- 0.003 0.021 +/- 0.004 25-Jul-01 0.026 +/- 0.004 0.032 +/- 0.004 0.029 +/- 0.004 0.023 +/- 0.003 0.026 +/- 0.003 01-Aug-01 0.027 +/- 0.004 0.027 +/- 0.004 0.026 +/- 0.004 0.026 +/- 0.004 0.026 +/- 0.004 08-Aug-01 0.031 +/- 0.004 0.033 +/- 0.004 0.031 +/- 0.004 0.033 +/- 0.004 0.030 +/- 0.004 15-Aug-01 0.025 +/- 0.004 0.022 +/- 0.004 0.020 +/- 0.004 0.021 +/- 0.004 0.022 +/- 0.004 22-Aug-01 0.022 +/- 0.004 0.026 +/- 0.004 0.028 +/- 0.004 0.023 +/- 0.004 0.023 +/- 0.003 29-Aug-01 0.023 +/- 0.004 0.026 + 0.004 0.026 +/- 0.004 0.025 +/- 0.004 0.025 +/- 0.004 04-Sep-01 0.023 +/- 0.004 0.020 +/- 0.004 0.026 +/- 0.005 0.033 +/- 0.005 0.029 +/- 0.005 12-Sep-01 0.021 +/- 0.003 0.020 + 0.003 0.022 +/- 0.003 0.020 +/- 0.003 0.021 +/- 0.003 19-Sep-01 0.031 +/- 0.004 0.028 + 0.004 0.027 +/- 0.004 0.027 +/- 0.004 0.029 +/- 0.004 26-Sep-01 0.027 +/- 0.003 0.030 +/- 0.003 0.028 +/- 0.004 0.027 +/- 0.003 0.028 +/- 0.003 03-Oct-01 0.026 +/- 0.004 0.028 +/- 0.004 0.025 +/- 0.004 0.025 +/- 0.004 0.024 +/- 0.004 11-Oct-01 0.028 +/- 0.003 0.030 +/- 0.003 0.027 +/- 0.003 0.033 +/- 0.003 0.030 +/- 0.003 17-Oct-01 0.011 +/- 0.004 0.012 +/- 0.004 0.013 +/- 0.004 0.013 +/- 0.004 0.015 +/- 0.004 24-Oct-01 0.025 +/- 0.004 0.027 +/- 0.004 0.026 +/- 0.004 0.027 +/- 0.004 0.030 +/- 0.004 31-Oct-01 0.020 +/- 0.004 0.020 + 0.003 0.020 +/- 0.004 0.017 +/- 0.003 0.018 +/- 0.004 07-Nov-01 0.018 +/- 0.004 0.019 +/- 0.004 0.021 +/- 0.004 0.015 +/- 0.003 0.018 +/- 0.004 14-Nov-01 0.030 +/- 0.004 0.033 +/- 0.004 0.034 +/- 0.004 0.030 +/- 0.004 0.031 +/- 0.004 20-Nov-01 0.053 +/- 0.005 0.055 + 0.005 0.056 +/- 0.005 0.056 +/- 0.005 0.055 +/- 0.005 28-Nov-01 0.023 +/- 0.003 0.022 + 0.003 0.021 +/- 0.003 0.023 +/- 0.003 0.023 +/- 0.003 05-Dec-01 0.021 +/- 0.003 0.022 +/- 0.003 0.028 +/- 0.004 0.025 +/- 0.004 0.028 +/- 0.004 12-Dec-01 0.033 +/- 0.004 0.033 +/- 0.004 0.031 +/- 0.004 0.040 +/- 0.004 0.037 +/- 0.004 19-Dec-01 0.029 +/- 0.004 0.028 +/- 0.004 0.028 +/- 0.004 0.029 +/- 0.004 0.030 +/- 0.004 26-Dec-01 0.030 +/- 0.004 0.031 +/- 0.004 0.033 +/- 0.004 0.033 +/- 0.004 0.033 +/- 0.004 02-Jan-02 0.027 +/- 0.004 0.031 +/- 0.004 0.025 +/- 0.004 0.024 +/- 0.004 0.024 +/- 0.004

-- page 91 of 122 --

TABLE 1 (continued)

DATE COLLECTED CL-7 CL-8 CL-11a CL-15 CL-94 10-Jan-01 0.032 +/- 0.004 0.035 +/- 0.004 0.036 +/- 0.004 0.036 +/- 0.004 0.032 +/- 0.004 17-Jan-01 0.029 +/- 0.004 0.030 +/- 0.004 0.026 +/- 0.004 0.031 +/- 0.004 0.025 +/- 0.003 24-Jan-01 0.035 +/- 0.004 0.037 +/- 0.004 0.041 +/- 0.005 0.045 +/- 0.005 0.044 +/- 0.005 31-Jan-01 0.026 +/- 0.003 0.026 +/- 0.004 0.029 +/- 0.004 0.026 +/- 0.003 0.030 +/- 0.004 07-Feb-01 0.029 +/- 0.003 0.034 +/- 0.004 0.029 +/- 0.003 0.029 +/- 0.003 0.031 +/- 0.004 14-Feb-01 0.023 +/- 0.003 0.027 +/- 0.004 0.023 +/- 0.003 0.027 +/- 0.004 0.027 +/- 0.004 21-Feb-01 0.030 +/- 0.004 0.031 +/- 0.004 0.031 +/- 0.004 0.035 +/- 0.004 0.033 +/- 0.004 28-Feb-01 0.024 +/- 0.004 0.028 +/- 0.004 0.026 +/- 0.004 0.026 +/- 0.004 0.024 +/- 0.004 07-Mar-01 0.025 +/- 0.004 0.029 +/- 0.004 0.027 +/- 0.004 0.024 +/- 0.004 0.026 +/- 0.004 14-Mar-01 0.020 +/- 0.003 0.021 +/- 0.003 0.022 +/- 0.003 0.018 +/- 0.003 0.022 +/- 0.003 22-Mar-01 0.015 +/- 0.003 0.020 +/- 0.003 0.016 +/- 0.003 0.012 +/- 0.003 0.019 +/- 0.003 28-Mar-01 0.018 +/- 0.003 0.021 +/- 0.004 0.021 +/- 0.004 0.020 +/- 0.004 0.021 +/- 0.004 04-Apr-01 0.022 +/- 0.003 0.024 +/- 0.003 0.024 +/- 0.003 0.019 +/- 0.003 0.025 +/- 0.003 11-Apr-01 0.021 +/- 0.003 0.021 +/- 0.003 0.018 +/- 0.003 0.019 +/- 0.004 0.020 +/- 0.003 18-Apr-01 0.015 +/- 0.003 0.022 +/- 0.004 0.021 +/- 0.004 0.016 +/- 0.003 0.019 +/- 0.003 25-Apr-01 0.020 +/- 0.003 0.026 +/- 0.003 0.027 +/- 0.003 0.020 +/- 0.003 0.025 +/- 0.003 02-May-01 0.024 +/- 0.004 0.028 +/- 0.004 0.027 +/- 0.004 0.020 +/- 0.004 0.026 +/- 0.004 09-May-01 0.019 +/- 0.003 0.026 +/- 0.004 0.024 +/- 0.003 0.017 +/- 0.003 0.024 +/- 0.003 16-May-01 0.021 +/- 0.004 0.024 +/- 0.004 0.022 +/- 0.004 0.020 +/- 0.004 0.024 +/- 0.004 23-May-01 0.018 +/- 0.003 0.021 +/- 0.004 0.021 +/- 0.003 0.021 +/- 0.003 0.020 +/- 0.003 30-May-01 0.008 +/- 0.003 0.010 +/- 0.003 0.010 +/- 0.003 0.006 +/- 0.003 0.011 +/- 0.003 06-Jun-01 0.009 +/- 0.003 0.009 +/- 0.003 0.013 +/- 0.003 0.009 +/- 0.003 0.013 +/- 0.003 13-Jun-01 0.025 +/- 0.004 0.025 +/- 0.004 0.021 +/- 0.004 0.024 +/- 0.004 0.026 +/- 0.004 20-Jun-01 0.023 +/- 0.003 0.027 +/- 0.003 0.023 +/- 0.003 0.025 +/- 0.004 0.028 +/- 0.004 27-Jun-01 0.017 +/- 0.003 0.027 +/- 0.004 0.023 +/- 0.003 0.019 +/- 0.003 0.023 +/- 0.003 03-Jul-01 0.021 +/- 0.004 0.026 +/- 0.004 0.025 +/- 0.004 0.022 +/- 0.004 0.024 +/- 0.004 11-Jul-01 0.022 +/- 0.003 0.022 +/- 0.003 0.023 +/- 0.004 0.021 +/- 0.004 0.021 +/- 0.003 18-Jul-01 0.020 +/- 0.004 0.027 +/- 0.004 0.026 +/- 0.004 0.021 +/- 0M004 0.024 +/- 0.004 25-Jul-01 0.027 +/- 0.004 0.034 +/- 0.004 0.027 +/- 0.004 0.027 +/- 0.004 0.030 +/- 0.004 01-Aug-01 0.026 +/- 0.004 0.031 +/- 0.004 0.028 +/- 0.004 0.026 +/- 0.004 0.030 +/- 0.004 08-Aug-01 0.029 +/- 0.004 0.036 +/- 0.004 0.031 +/- 0.004 0.034 +/- 0.004 0.033 +/- 0.004 15-Aug-01 0.021 +/- 0.004 0.023 +/- 0.004 0.024 +/- 0.004 0.018 +/- 0.004 0.026 +/- 0.004 22-Aug-01 0.021 +/- 0.003 0.029 +/- 0.004 0.028 +/- 0.004 0.024 +/- 0.004 0.026 +/- 0.004 29-Aug-01 0.020 +/- 0.004 0.020 +/- 0.004 0.024 +/- 0.004 0.022 +/- 0.004 0.026 +/- 0.004 04-Sep-01 0.020 +/- 0.004 0.025 +/- 0.004 0.028 +/- 0.005 0.028 +/- 0.005 0.030 +/- 0.005 12-Sep-01 0.018 +/- 0.003 0.022 +/- 0.003 0.021 +/- 0.003 0.025 +/- 0.003 0.022 +/- 0.003 19-Sep-01 0.027 +/- 0.004 0.032 +/- 0.004 0.029 +/- 0.004 0.032 +/- 0.004 0.028 +/- 0.004 26-Sep-01 0.029 +/- 0.003 0.027 +/- 0.003 0.026 +/- 0.003 0.027 +/- 0.004 0.027 +/- 0.003 03-Oct-01 0.026 +/- 0.004 0.023 +/- 0.004 0.024 +/- 0.004 0.023 +/- 0.004 0.023 +/- 0.004 11-Oct-01 0.027 +/- 0.003 0.031 +/- 0.003 0.019 +/- 0.003 0.026 +/- 0.003 0.031 +/- 0.003 17-Oct-01 0.014 +/- 0.004 0.013 +/- 0.004 0.016 +/- 0.004 0.011 +/- 0.003 0.010 +/- 0.004 24-Oct-01 0.025 +/- 0.004 0.030 +/- 0.004 0.029 +/- 0.004 0.016 +/- 0.004 0.027 +/- 0.004 31-Oct-01 0.019 +/- 0.003 0.021 +/- 0.004 0.019 +/- 0.004 0.019 +/- 0.004 0.018 +/- 0.003 07-Nov-01 0.017 +/- 0.004 0.019 +/- 0.004 0.017 +/- 0.004 0.020 +/- 0.004 0.019 +/- 0.004 14-Nov-01 0.031 +/- 0.004 0.034 +/- 0.004 0.041 +/- 0.005 0.035 +/- 0.004 0.031 +/- 0.004 20-Nov-01 0.060 +/- 0.005 0.057 +/- 0.005 0.055 +/- 0.005 0.056 +/- 0.005 0.052 +/- 0.005 28-Nov-01 0.019 +/- 0.003 0.022 +/- 0.003 0.020 +/- 0.003 0.039 +/- 0.008b 0.026 +/- 0.003 05-Dec-01 0.028 +/- 0.004 0.026 +/- 0.004 0.024 +/- 0.003 0.024 +/- 0.004 0.025 +/- 0.003 12-Dec-01 0.038 +/- 0.004 0.037 +/- 0.004 0.037 +/- 0.004 0.034 +/- 0.004 0.037 +/- 0.004 19-Dec-01 0.026 +/- 0.004 0.030 +/- 0.004 0.030 +/- 0.004 0.024 +/- 0.003 0.031 +/- 0.004 26-Dec-01 0.030 +/- 0.004 0.036 +/- 0.004 0.027 +/- 0.004 0.029 +/- 0.004 0.033 +/- 0.004 02-Jan-02 0.030 +/- 0.004 0.025 +/- 0.004 0.024 +/- 0.004 0.023 +/- 0.004 0.022 +/- 0.004 a Control Location, all other locations are Indicator Locations.

b Volume low due to blown fuse. Result not included.

-- page 92 of 122 --

TABLE 2 GAMMA ISOTOPIC ACTIVITY IN AIR PARTICULATES FOR 2001 c (pCi/ms)

SITE ISOTOPE IST QTR 2ND QTR 3 RD QTR 4 TH QTR CL-I Be7 0.059 +/- 0.017 0.074 +/- 0.017 0.094 +/- 0.018 0.064 +/- 0.017 40 K < 0.033 < 0.023 < 0.027 < 0.024 60 Co < 0.0007 < 0.0008 < 0.0008

  • 0.0005 Nb 95 < 0.0006 < 0.0013 < 0.0008 < 0.0010 95 Zr < 0.0008 < 0.0010 < 0.0008 < 0.0009 10 3 RU < 0.0011 < 0.0008 < 0.0012 < 0.0013 Rulos < 0.0080 < 0.0063 < 0.0039 < 0.0072 34 Cs' < 0.0006 < 0.0006 < 0.0009 < 0.0010 Cs137 < 0.0007 < 0.0005 < 0.0003 < 0.0009 Ce'414 < 0.0021 < 0.0022 < 0.0009 < 0.0016 4

Ce' < 0.0055 < 0.0061 < 0.0044 < 0.0049 7

CL-2 Be 0.069 +/- 0.022 0.067 +/- 0.014 0.067 +/- 0.017 0.055 +/- 0.014 40 K < 0.028 < 0.023 < 0.027 < 0.034 Co60 < 0.0007 < 0.0008 < 0.0008 < 0.0010 Nb95 < 0.0014 < 0.0014 < 0.0010 < 0.0008 Zr 95 < 0.0008 < 0.0011 < 0.0021 < 0.0017 Ru'103 < 0.0007 < 0.0007 < 0.0014 < 0.0013 Ru' 06 < 0.0091 < 0.0045 < 0.0041 < 0.0066 34 Cs1 < 0.0004 < 0.0004 < 0.0012 < 0.0005

< 0.0005 < 0.0005 < 0.0007 < 0.0007 41 Ce' < 0.0022 < 0.0015 < 0.0022 < 0.0007 44 Ce1 < 0.0059 < 0.0054 < 0.0058 < 0.0024 CL-3 Be 7 0.063 +/- 0.021 0.069 +/- 0.015 0.083 +/- 0.019 0.057+/- 0.014 40 K < 0.029 < 0.024 < 0.028 < 0.019 60 Co < 0.0009 < 0.0008 < 0.0008 < 0.0011 Nb96 < 0.0013 < 0.0016 < 0.0010 < 0.0008 9

Zrm < 0.0014 < 0.0015 < 0.0009 < 0.0012 RU'03 < 0.0004 < 0.0008 < 0.0013 < 0.0010 Ru' 06 < 0.0081 < 0.0050 < 0.0081 < 0.0068 34 Cs' < 0.0006 < 0.0004 < 0.0011 < 0.0008 7

Cs13 < 0.0008 < 0.0003 < 0.0006 < 0.0008 Ce'41 < 0.0023 < 0.0024 < 0.0021 < 0.0019 44 Ce1 < 0.0044 < 0.0043 < 0.0023 < 0.0022 c All 1131 results were < 0.07 pCi/m 3

-- page 93 of 122 --

TABLE 2 (continued)c SITE ISOTOPE 1 ST QTR 2 ND QTR 3 RD QTR 4 TH QTR 7

CL-4 Be 0.069 +/- 0.021 0.084 +/- 0.016 0.087 +/- 0.018 0.066+/- 0.016 40 K < 0.030 < 0.024 < 0.028 < 0.023 Co so < 0.0009 < 0.0009 < 0.0008 < 0.0011 Nb955 < 0.0006 < 0.0014 < 0.0008 < 0.0016 9

Zr 3 < 0.0019 < 0.0011 < 0.0014 < 0.0015 10 Ru 6 < 0.0006 < 0.0009 < 0.0006 < 0.0011 0

Rul < 0.0068 < 0.0071 < 0.0068 < 0.0100 Cs, 34

< 0.0004 < 0.0004 < 0.0009 < 0.0007 37 Cs' < 0.0006 < 0.0005 < 0.0004 < 0.0013 14 Ce 14 < 0.0019 < 0.0018 < 0.0019 < 0.0029 14 Ce < 0.0064 < 0.0030 < 0.0050 < 0.0048 7

CL-6 Be 0.079 +/- 0.016 0.075 +/- 0.015 0.075 +/- 0.020 0.047+/- 0.019 0

K4 < 0.028 < 0.023 < 0.027 < 0.031 60 Co < 0.0007 < 0.0008 < 0.0009 < 0.0013 Nb 95 < 0.0006 < 0.0014 < 0.0011 < 0.0008 Zr 95 < 0.0008 < 0.0016 < 0.0008 < 0.0019 03 Ru1 < 0.0006 < 0.0007 < 0.0008 < 0.0012 06 Ru1 < 0.0061 < 0.0055 < 0.0039 < 0.0045 34 Cs' < 0.0006 < 0.0004 < 0.0010 < 0.0005 1 37 Cs < 0.0007 < 0.0004 < 0.0006 < 0.0008 Ce141 < 0.0013 < 0.0024 < 0.0019 < 0.0012 44 Ce' < 0.0047 < 0.0052 < 0.0054 < 0.0054 7

CL-7 Be 0.070 +/- 0.014 0.076 +/- 0.018 0.084 +/- 0.018 0.046+/- 0.016 40 K < 0.028 < 0.023 < 0.027 < 0.024 Co60 < 0.0007 < 0.0008 < 0.0008 < 0.0012 Nb9 5 < 0.0008 < 0.0012 < 0.0010 < 0.0012 95 Zr < 0.0015 < 0.0014 < 0.0013 < 0.0021 Rul0036 < 0.0013 < 0.0010 < 0.0008 < 0.0017 Rul < 0.0073 < 0.0068 < 0.0054 < 0.0111 34 Cs1 < 0.0006 < 0.0004 < 0.0009 < 0.0012 37 Cs' < 0.0013 < 0.0003 < 0.0007 < 0.0006 Ce141 < 0.0025 < 0.0025 < 0.0014 < 0.0023 44 Ce1 < 0.0060 < 0.0045 < 0.0052 < 0.0049 CL-8 Be 7 0.063 +/- 0.021 0.080 +/- 0.018 0.076 +/- 0.013 0.050+/- 0.014 40 K < 0.031 < 0.024 < 0.027 < 0.022 Co 6o < 0.0007 < 0.0008 < 0.0008 < 0.0008 Nb95 < 0.0010 < 0.0014 < 0.0007 < 0.0006 Zr 95 < 0.0009 < 0.0011 < 0.0009 < 0.0010 10 3 Ru < 0.0018 < 0.0015 < 0.0007 < 0.0010 106 Ru < 0.0068 < 0.0051 < 0.0044 < 0.0082 34 Cs' < 0.0005 < 0.0006 < 0.0008 < 0.0005 1 37 Cs < 0.0005 < 0.0010 < 0.0007 < 0.0005 Ce141 < 0.0013 < 0.0020 < 0.0008 < 0.0015 44 Ce1 < 0.0059 < 0.0047 < 0.0024 < 0.0038 3

c All 1131 results were < 0.07 pCi/m

-- page 94 of 122 --

TABLE 2 (continued)

SITE ISOTOPE 1 ST QTR 2 ND QTR 3 RD QTR 4 TH QTR CL-11d Be 07 0.075 0.016 0.079 0.019 0.072+/- 0.020 0.050+/- 0.013 4

K < 0.036 < 0.025 < 0.027 < 0.031 Co60 < 0.0007 < 0.0008 < 0.0009 < 0.0012 95 N b5 < 0.0009 < 0.0013 < 0.0008 < 0.0011 9

Zr 3 < 0.0015 < 0.0009 < 0.0008 < 0.0015 10 Ru 6 < 0.0010 < 0.0013 < 0.0010 < 0.0007 10 Ru < 0.0063 < 0.0055 < 0.0062 < 0.0036 CS1 34 37

< 0.0007 < 0.0007 < 0.0009 < 0.0010 Cs, < 0.0011 < 0.0004 < 0.0007 < 0.0004 141 Ce 44

< 0.0016 < 0.0017 < 0.0010 < 0.0011 Ce1 < 0.0052 < 0.0053 < 0.0061 < 0.0030 7

CL-15 Be 0.066+/- 0.018 0.065 0.016 0.074+/- 0.018 0.051 0.012 40 K < 0.028 < 0.025 < 0.028 < 0.027 Co60 < 0.0007 < 0.0009 < 0.0008 < 0.0005 95 Nb 5 < 0.0007 < 0.0020 < 0.0010 < 0.0008 9

Zr < 0.0008 < 0.0028 < 0.0020 < 0.0017 03 Ru1 6 < 0.0009 < 0.0008 < 0.0009 < 0.0010 0

Ru1 < 0.0080 < 0.0087 < 0.0089 < 0.0047 Cs, 34 37

< 0.0005 < 0.0004 < 0.0010 < 0.0010 Cs1 < 0.0009 < 0.0005 < 0.0006 < 0.0005 Ce1414 < 0.0021 < 0.0019 < 0.0008 < 0.0017 4

Ce1 < 0.0039 < 0.0029 < 0.0065 < 0.0036 7

CL-94 Be 0.067+/- 0.018 0.069 0.015 0.084 0.017 0.058 0.018 40 K < 0.029 < 0.023 < 0.027 < 0.023 Co60 < 0.0007 < 0.0008 < 0.0008 < 0.0005 Nb 95 < 0.0012 < 0.0016 < 0.0008 < 0.0007 95 Zr < 0.0008 < 0.0013 < 0.0011 < 0.0021 03 Ru1 6 < 0.0008 < 0.0012 < 0.0011 < 0.0011 0

Ru1 < 0.0066 < 0.0066 < 0.0094 < 0.0048 Cs,134

< 0.0008 < 0.0005 < 0.0009 < 0.0004 Cs1 37

< 0.0008 < 0.0004 < 0.0005 < 0.0008 Ce141 < 0.0015 < 0.0032 < 0.0019 < 0.0017 44 Ce' < 0.0063 < 0.0052 < 0.0052 < 0.0057 3

c All 1131 results were < 0.07 pCi/m d Control Location, all other locations are Indicator Locations.

-- page 95 of 122 --

TABLE 3 2001 QUARTERLY TLD RESULTS (mRem / quarter net exposure)

Location 1 ST QTR 2 ND QTR 3 RD QTR 4 TH QTR CL-1 15.2 +/- 0.2 18.3 +/- 0.3 17.9 +/- 0.2 18.2 +/- 0.7 CL-2 17.8 +/- 0.2 19.9 +/- 0.2 20.4 +/- 0.4 19.4 +/- 0.3 CL-3 17.0 +/- 0.2 19.1 +/- 0.2 20.1 +/- 0.2 19.0 +/- 0.5 CL-4 17.0 +/- 0.2 16.8 +/- 0.2 19.5 +/- 0.2 18.5 +/- 0.2 CL-5 17.6 +/- 0.3 19.2 +/- 0.2 19.7 +/- 0.2 18.5 +/- 0.2 CL-6 14.6 +/- 0.2 15.7 +/- 0.2 16.9 +/- 0.4 15.8 +/- 0.4 CL-7 15.9 +/- 0.2 16.5 +/- 0.2 18.8 +/- 0.2 17.4 +/- 0.2 CL-8 16.7 +/- 0.2 18.2 +/- 0.3 18.8 +/- 0.3 18.0 +/- 0.3 CL-11e 15.2 +/- 0.2 16.0 +/- 0.2 17.1 +/- 0.2 16.2 +/- 0.3 CL-15 13.4 +/- 0.2 15.6 +/- 0.2 16.5 +/- 0.2 15.8 +/- 0.3 CL-22 15.3 +/- 0.2 16.9 +/- 0.2 16.9 +/- 0.4 17.6 +/- 0.3 CL-23 13.9 +/- 0.2 16.8 +/- 0.2 15.4 +/- 0.2 17.1 +/- 0.2 CL-24 15.2 +/- 0.2 17.2 +/- 0.2 18.9 +/- 0.2 17.2 +/- 0.2 CL-33f 16.3 +/- 0.3 18.3 +/- 0.4 18.5 +/- 0.3 18.7 +/- 0.3 CL-34 17.5 +/- 0.3 19.5 +/- 0.2 20.8 +/- 0.3 19.5 +/- 0.4 CL-35 16.3 +/- 0.2 17.2 +/- 0.2 17.1 +/- 0.2 17.4 +/- 0.2 CL-36 17.0 +/- 0.2 18.3 +/- 0.3 20.8 +/- 0.5 19.0 +/- 0.3 CL-37 17.6 +/- 0.3 18.3 +/- 0.4 20.7 +/- 0.3 19.3 +/- 0.5 CL-41 17.6 +/- 0.3 18.7 +/- 0.3 20.6 +/- 0.3 19.4 +/- 0.3 CL-42 16.7 +/- 0.2 17.2 +/- 0.2 19.9 +/- 0.2 17.9 +/- 0.2 CL-43 17.7 +/- 0.4 19.5 +/- 0.2 21.9 +/- 0.2 19.5 +/- 0.4 CL-44 17.6 +/- 0.4 18.3 +/- 0.4 20.8 +/- 0.4 19.3 +/- 0.3 CL-45 17.8 +/- 0.2 19.9 +/- 0.2 21.2 +/- 0.2 19.7 +/- 0.2 CL-46 17.0 +/- 0.2 18.0 +/- 0.4 19.5 +/- 0.3 18.1 +/- 0.2 CL-47 17.4 +/- 0.2 18.3 +/- 0.2 19.6 +/- 0.2 18.8 +/- 0.3 CL-48 20.7 +/- 0.2 18.3 +/- 0.2 18.6 +/- 0.2 19.5 +/- 0.5 CL-49 15.6 +/- 0.2 19.8 +/- 0.2 20.1 +/- 0.2 19.6 +/- 0.2 CL-51 16.0 +/- 0.2 18.4 +/- 0.2 20.3 +/- 0.6 19.3 +/- 0.3 CL-52 17.0 +/- 0.2 19.5 +/- 0.2 21.0 +/- 0.4 19.5 +/- 0.4 CL-53 15.6 +/- 0.2 19.0 +/- 0.2 19.0 +/- 0.3 17.6 +/- 0.2 CL-54 15.5 +/- 0.2 19.0 +/- 0.2 20.7 +/- 0.3 19.5 +/- 0.4 CL-55 17.6 +/- 0.3 19.1 +/- 0.2 20.9 +/- 0.5 19.5 +/- 0.2 CL-56 17.0 +/- 0.2 19.9 +/- 0.2 21.0 +/- 0.2 21.0 +/- 0.2 CL-57 15.6 +/- 0.2 19.1 +/- 0.2 21.5 +/- 0.2 18.8 +/- 0.2 CL-58 16.3 +/- 0.2 18.4 +/- 0.2 20.9 +/- 0.2 19.4 +/- 0.3 CL-60 17.0 +/- 0.2 19.1 +/- 0.2 20.7 +/- 0.3 19.6 +/- 0.4 CL-61 16.3 +/- 0.2 19.4 +/- 0.2 19.6 +/- 0.2 20.5 +/- 0.2 CL-63 16.3 +/- 0.2 19.5 +/- 0.2 20.2 +/- 0.2 19.5 +/- 0.3 CL-64 14.8 +/- 0.2 19.5 +/- 0.3 19.4 +/- 0.2 19.3 +/- 0.3 CL-65 17.8 +/- 0.2 19.2 +/- 0.2 20.6 +/- 0.3 19.4 +/- 0.3 CL-74 14.8 +/- 0.2 15.2 +/- 0.2 16.5 +/- 0.3 16.7 +/- 0.2 CL-75 15.9 +/- 0.2 19.2 +/- 0.2 19.2 +/- 0.2 19.1 +/- 0.3 CL-76 16.6 +/- 0.2 19.8 +/- 0.2 19.7 +/- 0.2 19.5 +/- 0.2 CL-77 16.0 +/- 0.2 19.1 +/- 0.2 18.8 +/- 0.2 19.0 +/- 0.4 CL-78 15.9 +/- 0.2 19.5 +/- 0.2 19.3 +/- 0.2 19.7 +/- 0.2 e ODCM Control Location f Supplemental Control Locations

-- page 96 of 122 --

TABLE 3 (continued)

Location 1 ST QTR 2 ND QTR 3 RD QTR 4 TH QTR CL-79 16.1 +/- 0.2 19.8 +/- 0.2 20.7 +/- 0.4 18.6 +/- 0.3 CL-80 17.0 +/- 0.2 19.1 +/- 0.2 20.8 +/- 0.3 18.9 +/- 0.2 CL-81 17.6 +/- 0.3 21.0 +/- 0.2 20.0 +/- 0.2 20.9 +/- 0.3 CL-84 16.3 +/- 0.2 18.2 +/- 0.3 18.2 +/- 0.2 18.1 +/- 0.2 CL-90 13.1 +/- 0.2 15.1 +/- 0.4 13.9 +/- 0.2 14.6 +/- 0.3 CL-91 14.8 +/- 0.2 17.2 +/- 0.2 17.0 +/- 0.4 17.8 +/- 0.3 CL-971 16.3 +/- 0.2 18.2 +/- 0.2 18.5 +/- 0.2 19.5 +/- 0.3 CL-99 14.1 +/- 0.2 14.7 +/- 0.4 15.9 +/- 0.2 15.9 +/- 0.5 CL-114' 15.2 +/- 0.2 15.7 +/- 0.2 15.0 +/- 0.3 15.8 +/- 0.3 f Supplemental control locations

-- page 97 of 122 --

TABLE 4 CL-13 SURFACE WATER ACTIVITY (pCi/I)

Date 30 Jan 01 28 Feb 01 28 Mar 01 25 Apr 01 30 May 01 27 Jun 01 Collected Gross 3.2 +/- 0.6 2.4 +/- 0.5 2.3 +/- 0.5 3.0 +/- 0.7 3.7 +/- 0.3 2.6 +/- 0.4 Beta Be 7 < 44.3 < 29.0 < 48.2 < 50.0 < 73.6 < 15.2 40 K 4 < 48.8 < 54.0 < 91.8 < 103.3 < 106.1 < 25.3 5

Mn 9 < 6.3 < 1.6 < 2.2 <4.1 <3.6 <1.3 5

Fe <5.2 <5.7 <4.3 < 10.7 < 12.1 < 4.2 5

Co 8 <5.6 <2.8 <2.7 <5.7 <6.9 < 1.4 Co60 <4.6 <1.7 <1.5 <5.0 < 4.5 < 1.4 Zn 65 <9.5 <3.2 <4.2 < 3.4 < 4.6 < 1.7 N b95

<3.7 < 3.4 <4.3 < 9.1 <6.7 <2.0 9

Zr 64 <8.0 <4.1 <7.9 < 10.5 < 12.3 <3.1 13 Cs <4.0 <2.5 <3.1 < 7.0 <5.1 < 1.3 CS137 <4.9 <2.3 <2.7 < 5.5 <2.7 <0.9 140 Ba < 29.1 < 26.8 < 55.4 < 48.9 < 55.6 < 19.1 1 40 La <9.9 <3.3 < 12.4 <7.0 < 14.8 <7.0 1 44 Ce < 35.2 < 14.0 < 27.2 < 51.0 < 32.4 < 13.0 Date 25 Jul 01 29 Aug 01 26 Sep 01 24 Oct 01 28 Nov 01 26 Dec 01 Collected Gross 3.2 +/- 0.6 3.0 +/- 0.4 2.9 +/- 0.5 3.1 +/- 0.5 3.0 +/- 0.6 2.6 +/- 0.3 Beta 7

Be < 19.7 < 30.4 < 20.4 < 31.1 < 29.2 < 44.8 40 K < 68.7 < 82.6 < 38.8 < 106.5 < 66.7 < 104.6 54 Mn <2.9 <3.6 <2.0 < 2.8 <3.7 <6.0 59 Fe <5.9 <9.1 <3.8 < 12.7 < 4.4 < 8.2 Co58 <3.3 <3.2 < 1.2 < 4.9 < 3.3 <5.3 Co60 <3.0 <3.3 <2.0 < 6.7 < 3.5 <3.5 6

Zn <4.8 <6.7 <4.2 < 7.6 < 5.7 < 12.3 Nb95 <2.3 <3.8 <1.9 < 3.8 <1.3 < 6.4 9 5 Zr <5.9 <4.7 <4.2 <6.0 <4.9 < 15.5 1 34 Cs <2.5 < 3.4 < 1.2 <4.9 <4.8 <4.8 1 37 Cs <2.7 <2.5 < 1.4 <5.0 <4.1 < 6.4 1 40 Ba < 31.2 < 23.3 < 13.0 < 44.2 < 16.6 < 33.8 40 La' 4 < 5.4 <4.7 <3.8 <9.5 <4.2 <3.9 14 Ce < 25.9 < 17.9 < 18.2 < 38.0 < 33.9 < 45.7

-- page 98 of 122 --

TABLE 5 CL-90 SURFACE WATER ACTIVITY (pCi/I)

Date 30 Jan 01 28 Feb 01 28 Mar 01 25 Apr 01 30 May 01 27 Jun 01 Collected Gross 0.6 +/- 0.3 <0.9 < 0.4 <0.5 2.4+/-0.5 0.8+/-0.5 Alpha Gross 1.9 +/- 0.4 2.9 +/- 0.4 2.6 +/- 0.4 2.6 +/- 0.5 4.5 +/- 0.4 2.7 +/- 0.5 Beta 1131

<0.3 < 0.4 <0.3 <0.3 < 0.4 < 0.4 Be' < 37.0 < 52.1 < 41.7 < 38.3 < 42.2 < 33.1 40 K < 20.8 < 38.6 < 100.9 < 103.6 < 70.1 < 88.8 Mn54 <2.6 <5.1 <4.5 < 2.0 < 2.8 <2.5 Fe 5 9 < 10.2 <4.4 <6.9 < 4.5 < 5.2 <6.5 Co"o <3.0 <3.8 < 4.8 <2.0 <3.3 <2.5 00 60 <2.1 <2.7 < 3.3

  • 1.6 <2.0 <2.0 Zn 6 <6.1 <9.9 < 9.4 < 5.7 < 5.1 <5.0 Nb95 <3.0 <3.5 < 4.5 <3.7 <2.7 <2.2 Zr95 <7.9 <7.3 < 6.6 <5.1 <7.7 <5.9 Cs134 < 3.4 <4.8 <4.7 <3.5 < 2.6 <2.3 Cs, 37 < 3.4 <3.6 <5.5 <3.4 < 3.4 <4.3 0

Ba140 4

< 11.9 < 19.0 < 13.0 < 14.9 < 16.2 < 21.6 La1 4 4

<4.7 <2.8 < 5.6 <4.4 < 3.6 <3.4 Ce1 < 26.0 < 55.1 < 44.2 < 36.9 < 27.0 < 31.1 Date 25 Jul 01 29 Aug 01 26 Sep 01 24 Oct 01 28 Nov 01 26 Dec 01 Collected Gross 1.0+/-0.4 0.9+/-0.4 1.0+/-0.4 <0.4 1.1 +/-0.5 <0.5 Alpha Gross 2.3 +/- 0.4 2.7 +/- 0.4 3.0 +/- 0.5 2.6 +/- 0.5 2.6 +/- 0.5 4.3 +/- 0.5 Beta 0131

<0.2 < 0.4 <0.2 <0.5 <0.3 <0.5 7

Be < 17.7 < 58.0 <48.1 < 31.3 < 24.9 < 53.2 40 K < 48.3 < 91.6 <138.8 < 75.8 < 83.7 < 137.6 Mn 54 <2.1 <5.0 <4.6 <2.1 <3.8 <4.4 Fe"9 <3.2 < 3.2 <9.9 < 3.4 <6.9 < 10.2 Co58 <2.5 <5.0 <5.3 <1.9 <3.4 <2.2 Co60 < 1.4 < 2.4 <6.0 <1.7 <4.5 <6.4 Zn65 <3.5 < 8.1 <6.2 <3.0 <8.4 <6.7 NbW < 2.4 <2.7 <4.3 <3.0 <2.2 <5.7 95 Zr <4.7 < 13.0 < 10.9 < 6.4 <4.2 < 12.9 34 Cs' <2.1 <5.5 <4.8 <2.0 <3.8 <4.2 37 Cs1 <2.0 < 4.9 <5.0 <2.3 <4.8 <4.1 0

Ba14 < 17.8 < 28.9 <22.3 < 12.7 < 17.4 < 27.8 1 40 La < 1.8 <2.5 <3.1 <2.3 <3.8 <6.6 44 Ce' < 16.8 < 41.2 <51.6 < 40.5 < 31.4 < 40.1

-- page 99 of 122 --

TABLE 6 CL-91 SURFACE WATER ACTIVITY (pCill)

Date 30 Jan 01 28 Feb 01 28 Mar 019 25 Apr 01 30 May 01 27 Jun 01 Collected Gross 0.7 +/- 0.3 <0.9 +/- 0.6 - 0.8+/-0.5 0.7+/-0.4 0.9+/-0.5 Alpha Gross 2.6 +/- 0.3 2.1 +/- 0.6 2.0+/-0.6 2.7+/-0.5 2.4+/-0.6 Beta Be' < 35.7 < 44.8 < 57.0 < 26.0 <33.9 40 K < 30.2 < 98.9 < 105.4 < 66.1 <52.2 54 Mn < 2.4 < 4.4 < 5.4 <2.2 <3.2 Fe 598 <9.6 < 12.4 < 13.4 <4.3 <3.9 5

Co < 2.4 <3.7 <4.9 <4.0 <2.1 Coso <2.5 <4.3 <4.7 <1.7 <2.6 65 Zn <3.0 <3.8 <3.3 < 6.0 <4.1 Nb9 5 <3.1 <7.2 <5.8 <4.5 <5.6 95 Zr <7.3 < 13.9 < 12.1 <7.8 <7.1 Cs 134

<5.5 < 3.6 <4.0 <2.5 <2.4 37 Cs1 0 <3.3 <4.9 <4.7 < 2.6 <2.8 Ba14 < 11.8 < 34.0 < 36.4 < 35.1 <59.7 14 0 La 4 < 4.4 <6.5 < 13.8 <4.7 <7.0 4

Ce' < 27.4 < 51.1 < 50.5 < 16.8 <24.6 Date 25 Jul 01 29 Aug 01 26 Sep 01 24 Oct 01 28 Nov 01 26 Dec 01 Collected Gross 1.3 +/- 0.5 1.7 +/- 0.5 3.0 +/-0.7h 1.0 +/- 0.5 <1.0 0.7 +/- 0.5 Alpha Gross 2.8 +/- 0.6 3.3 +/- 0.6 3.4 +/-0.7 2.7 +/- 0.6 2.8 +/- 0.6 2.9 +/- 0.6 Beta 7

Be < 38.9 < 35.2 < 39.9 < 44.3 < 43.4 <50.1 40 K < 73.8 < 69.1 < 72.9 < 128.7 < 110.3 <108.6 54 Mn <2.4 < 2.6 <4.0 <3.9 <3.3 <5.6 Fe 59 < 6.6 <4.2 <7.2 <4.8 <9.9 <8.9 58 Co <2.2 < 1.5 <2.0 <4.8 <5.6 <3.7 Co60 <1.9 <2.4 <3.3 < 2.4 <6.1 <7.0 65 Zn 5 < 2.6 <2.9 < 2.6 < 9.4 < 14.3 <7.2 9

Nb <4.8 <2.9 <5.1 <5.9 <4.1 <5.5 95 Zr <7.0 <5.0 <6.5 < 12.4 <5.9 <9.1 1 34 Cs < 1.6 < 3.4 < 2.4 < 6.4 <4.8 <6.4 1 37 Cs <2.7 <3.7 <3.9 <4.1 <6.2 <6.8 14 0 Ba < 41.9 < 24.1 < 27.6 < 50.9 < 14.6 <33.5 140 La <8.2 < 7.4 < 10.1 < 5.4 <5.0 <5.2 44 Ce1 < 34.0 < 26.7 < 32.6 < 48.0 < 35.3 <39.9 g No sample; refer to Appendix D, Exceptions to REMP during 2001.

h Gross Alpha was repeated with a result of 2.8 +/- 0.6 pCi/L.

-- page 100 of 122 --

TABLE 7 CL-99 SURFACE WATER ACTIVITY (pCill)

Date 30 Jan 01 28 Feb 01 28 Mar 01g 25 Apr 01 30 May 01 27 Jun 01 Collected Gross Alpha

<0.9 <1.0 <0.8 <0.7 <0.9 Gross 1.3 +/- 0.8 2.5 +/- 0.8 1.8+/-0.8 1.5+/-0.6 1.1+/-0.8 Beta Be 7 <22.1 < 51.7 < 41.0 < 59.5 < 44.0 40 K 54 <26.2 < 98.3 < 108.1 < 88.2 < 73.3 Mn <1.6 <4.7 <5.9 < 4.4 <3.1 Fe5 98 <3.7 <5.5 <9.5 <8.1 <8.9 5

Co 0 < 1.2 <5.0 <5.5 <4.3 <2.8 6

Co 5 < 1.9 <4.6 <4.5 <1.6 < 2.4 Zn <2.4 <8.0 <6.7 <5.5 < 2.4 N b9s <2.1 <4.7 < 5.4 <4.6 <3.5 Zr 954 <4.0 < 11.9 <9.1 <7.1 <4.3 3

Cs1 7 <2.6 <6.5 <6.1 <3.2 <4.2 3

Cs, 0 <1.4 <4.5 <6.5 <3.3 < 1.3 Ba140 < 10.0 < 48.6 < 49.1 < 50.1 < 46.1 14 La <4.5 <9.6 <9.2 <8.5 <8.9 1 44 Ce <26.7 < 45.3 < 50.7 < 41.9 < 31.5 Date 25 Jul 01 29 Aug 01 26 Sep 01 24 Oct 01 28 Nov 01 26 Dec 01 Collected Gross 1.4 +/- 0.7 2.8 +/- 0.8 1.2 +/- 0.8 <1.1 <1.5 <1.1 Alpha Gross 3.3 +/- 0.7 4.5 +/- 0.9 7.4 +/- 0.9i 6.4 +/- 0.9 4.5 +/- 0.9 2.7 +/- 0.8 Beta 7

Be < 39.1 < 30.1 < 27.3 <50.9 < 18.3 < 41.9 40 K < 85.3 < 66.7 < 41.4 <99.2 <79.3 < 115.4 54 Mn <3.7 <1.8 <1.8 <5.7 <4.1 <5.9 59 Fe < 6.6 <8.5 <3.2 <7.2 <6.2 <9.8 58 Co < 3.6 <3.3 < 1.4 <5.4 <4.8 <4.0 60 Co <2.5 <1.6 <1.7 <3.9 <3.6 <4.5 65 Zn < 8.2 <5.0 <3.0 <4.9 <4.3 <6.2 Nb95 <3.3 <2.5 <2.5 <5.6 <2.7 <6.3 Zr 95 < 4.5 < 5.4 <3.8 <9.9 <6.5 <6.8 34 Cs1 7 <3.0 <3.3 <2.2 <5.0 <4.4 <2.9 3

Cs1 0 < 3.1 <2.8 <2.0 <5.1 <5.7 <7.0 Ba14 < 32.6 < 22.7 < 26.1 <44.2 <20.9 < 24.2 0

La14 < 10.0 < 10.6 < 1.9 <4.8 <5.1 <4.1 1 44 Ce < 42.1 < 31.0 < 14.5 <52.4 <27.2 < 44.0 g No sample; refer to Appendix D, Exceptions to REMP during 2001.

i Gross Beta was repeated with a result of 7.8 +/- 0.9 pCi/L.

-- page 101 of 122 --

TABLE 8 SURFACE WATER and DRINKING WATER QUARTERLY TRITIUM COMPOSITE (pCiII)

Quarter CL-13 CL-14 CL-90 CL-91 CL-99 Ist < 184 < 184 < 184 < 184 < 184 2 nd < 150 < 150 < 150 < 150 < 150 3rd < 160 < 160 < 160 < 160 < 160 4 th < 164 < 164 < 164 < 164 < 164 TABLE E 9 CL-7D WELL WATER ACTIVITY (pCi/I)

Date Collected 28 Mar 01 27 Jun 01 26 Sep 01 26 Dec 01 Gross

< 0.8 < 0.8 1.1 +/- 0.7 0.8 +/- 0.6 Alpha Gross

<0.9 <1.2 2.3 +/- 0.8 < 1.2 Beta 3

H < 182 < 168 < 153 < 164 1131

<0.3 < 0.4 < 0.2 < 0.4 Be 7 < 37.7 < 29.2 < 59.4 < 23.0 40 K < 71.9 < 47.1 < 94.8 < 46.8 54 Mn 9 <6.0 <2.2 <3.9 <1.8 5

Fe <3.5 <4.1 < 5.6 <4.7 58 Co < 4.4 <3.3 <5.2 <1.5 Co60 <2.0 <2.6 <2.7 <2.0 Zn 65 <6.7 <3.8 <8.0 < 3.2 Nb 955 <4.1 <4.5 <5.3 <3.0 9

Zr <9.9 <6.2 <8.6 <3.7 1 34 Cs <5.0 <2.3 <3.6 <2.5 1 37 Cs 0 <3.2 <2.4 <3.7 <2.1 14 Ba < 13.9 < 30.7 < 29.5 < 13.8 1 40 La <2.8 <5.7 <2.9 <2.9 1 44 Ce < 21.3 < 16.5 < 49.2 < 21.7

-- page 102 of 122 --

TABLE 10

(;L-12 UNTREATED WELL WATER ACTIVITY (pCiIl)

Date 28 Mar 01 27 Jun 01 26 Sep 01 26 Dec 01 Collected Gross Alpha

<1.8 <1.9 <1.8 <2.4 Gross 1.9 +/- 1.3 <2.2 <2.1 <2.1 Beta 3

H < 182 < 168 < 153 < 164 P131 < 0.4

< 0.4 < 0.4 <0.2 Be 7 < 45.5 < 30.4 < 20.4 < 35.5 40 K < 120.0 < 41.8 < 41.2 < 73.2 54 Mn <5.1 < 2.4 < 1.7 <2.9 Fe 59 < 13.4 <6.5 <3.7 < 5.4 58 Co <5.1 < 1.5 < 1.6 < 3.2 CON < 5.4 < 1.7 < 1.6 < 3.6 65 Zn <5.1 <2.3 < 2.4 <3.3 Nb 9s <9.7 < 3.4 <2.6 <4.3 Zr95 <6.9 <7.2 <2.7 <7.9 1 34 Cs <3.2 <2.6 < 1.0 <4.0 1 37 Cs <6.2 <2.1 < 1.7 <3.6 140 Ba < 57.7 < 53.9 < 10.1 < 22.7 14 La 0 <9.1 < 12.4 <2.6 <4.6 Ce144 < 36.7 < 22.8 < 16.8 < 48.7

-- page 103 of 122 --

TABLE 11 CL-12 TREATED WELL WATER ACTIVITY (pCi/I)

Date 28 Mar 01 27 Jun 01 26 Sep 01 26 Dec 01 Collected Gross

<2.0 < 1.6 < 1.7 <2.3 Alpha Gross

<1.8 <2.1 2.4+/-1.5 2.4+/-1.7 Beta 3

H < 182 < 168 < 153 < 164 1131 <0.3 < 0.4 < 0.2 <0.4 7

Be < 32.5 < 43.5 < 11.9 < 30.0 40 K < 77.5 < 68.9 < 31.4 < 61.9 54 Mn < 2.6 < 1.6 <1.1 <2.6 Fe 59 <3.0 < 5.7 <3.1 <4.9 Co58 < 3.2 < 1.9 <1.3 <2.7 Co605 <1.5 < 1.5 < 1.0 < 2.4 6

Zn <4.5 <3.7 <3.1 <2.7 95 Nb <5.3 <4.1 < 2.2 <3.5 95 Zr <7.1 <4.1 <3.6 <4.0 134 Cs 7 <2.0 <2.3 < 1.9 <2.8 3

Cs1 <2.0 < 3.7 < 1.3 <3.2 0

Ba14 0

< 42.5 < 52.2 <8.0 < 22.6 La14 < 11.7 <7.4 <1.5 <2.2 44 Ce' < 36.0 < 27.8 < 12.5 < 20.9

-- page 104 of 122 --

TABLE 12 CL-14 DRINKING WATER ACTIVITY (pCi/I)

Date 30 Jan 01 28 Feb 01 28 Mar 01 25 Apr 01 30 May 01 27 Jun 01 Collected Gross 0.6 +/- 0.4 < 0.4 0.7 +/- 0.5 <0.5 1.1 +/- 0.3 <0.5 Alpha Gross 0.9 +/- 0.3 1.3 +/- 0.3 1.4 +/- 0.3 1.4 +/- 0.3 2.1 +/- 0.3 1.4 +/- 0.3 Beta 7

Be < 53.3 <38.0 < 77.7 < 41.6 < 26.5 < 31.6 40 K < 75.2 <76.9 < 125.9 < 79.4 < 69.6 < 72.4 54 Mn <5.3 <3.1 <5.2 < 2.4 <3.6 < 3.4 59 Fe <4.9 <6.4 <4.5 <5.6 <6.9 <7.3 Co08 < 3.6 <2.6 <5.4 <5.1 <3.9 <3.7 Co60 <2.3 <4.4 <4.0 < 1.9 <3.7 < 2.6 65 Zn <2.8 <4.7 <6.1 <6.0 <4.9 <5.1 N b9s <3.8 <5.0 <5.7 < 5.4 <4.0 <5.3 95 Zr 34

<7.8 <7.9 < 12.6 <6.8 <5.0 < 6.2 Cs, 7 <3.3 <2.2 <6.2 <2.2 <3.3 <3.5 13 Cs 0 < 4.4 <3.1 <3.7 <5.9 <3.2 <2.8 14 Ba < 28.5 <36.5 < 33.3 < 38.5 < 25.8 < 59.7 140 La <4.5 <5.8 <7.5 <5.6 <3.0 < 13.0 44 Ce1 < 46.7 <24.4 < 56.0 < 34.9 < 32.7 < 34.4 Date 25 Jul 01 29 Aug 01 26 Sep 01 24 Oct 01 28 Nov 01 26 Dec 01 Collected Gross

< 0.6 0.7 +/- 0.4 <0.5 0.7 +/- 0.4 0.8 +/- 0.5 0.8 +/- 0.4 Alpha Gross 1.6 +/- 0.3 1.2 +/- 0.3 1.0 +/- 0.3 1.1 +/- 0.3 1.4 +/- 0.3 1.5 +/- 0.3 Beta 7

Be < 28.4 <25.7 < 33.7 <41.3 <44.6 <52.9 40 K < 47.5 <74.7 < 58.2 < 111.4 <95.3 < 110.4 54 Mn <2.5 <2.2 < 2.9 < 2.6 <3.4 <3.1 59 Fe <6.9 <4.8 <4.5 < 11.5 <4.5 <7.4 Co 6 <2.3 <3.1 <2.1 <5.1 <3.1 <2.6 Co60 <2.0 <3.7 < 2.6 < 6.6 <2.1 <5.8 65 Zn <2.5 <3.1 < 5.2 <5.8 <5.5 < 10.4 Nb 95 < 3.4 <3.9 < 3.2 < 5.6 <4.5 <6.0 95 Zr <4.3 <6.0 < 4.2 <6.8 <5.6 <8.8 134 Cs <3.1 <2.6 < 2.4 <4.1 <5.1 <4.2 1 37 Cs <3.1 <2.9 < 2.4 <5.6 <5.1 <5.2 140 Ba < 53.4 <23.5 < 28.1 < 33.0 <34.2 <29.2 140 La < 12.2 <5.4 <5.9 < 10.4 <3.3 <7.6 1 44 Ce < 16.5 < 12.7 < 24.4 < 47.8 <49.6 <28.9

-- page 105 of 122 --

TABLE 13 CL-116 MILK ACTIVITY - (Control)

(pCi/I)

Date 31 Jan 01 01 Mar 01 28 Mar 01 25 Apr 01 09 May 01 Collected 1131 <0.3 < 0.4 <0.3 <0.3 <0.4 90 Sr 1.5 +/- 0.4 2.1 +/- 0.8 1.6 +/- 0.4 1.1 +/-0.4 1.1 +/- 0.3 7

Be0 < 28.6 < 22.0 < 38.6 < 22.6 < 40.9 4

K 1271 +/- 159 1291 +/- 164 1074 +/- 179 1147 +/- 134 1251 +/- 163 Mn54 <5.0 <3.5 <6.6 <3.8 < 4.6 59 Fe 8 < 10.2 < 11.4 < 11.2 <3.9 < 10.6 Cos 0 <2.5 <2.0 <3.9 <3.6 <3.4 6

Co65 <3.7 <4.3 <5.8 <2.7 <7.0 Zn < 11.2 < 6.6 < 15.9 <5.6 <8.3 Nb 95 <4.0 <3.3 <6.8 <3.7 <4.9 95 Zr <5.8 < 11.3 <7.5 <7.7 <7.0 13 4 Cs 7 <4.2 < 4.2 <3.1 < 5.4 <8.6 13 Cs 0 <4.5 <5.0 < 5.6 <3.7 <4.3 14 Ba 0 < 15.5 < 17.3 < 26.8 < 19.6 < 21.7 14 La <4.5 <3.3 <2.8 <3.6 <2.8 1 44 Ce < 33.9 < 37.8 < 53.2 < 32.8 < 36.4 Date 23 May 01 06 Jun 01 20 Jun 01 03 Jul 01 18 Jul 01 Collected 1131 <0.5 <0.4 <0.3 <0.5 <0.4 90 Sr 1.0 +/- 0.4 1.2 +/- 0.4 0.9 +/- 0.4 1.2 +/- 0.3 0.5 +/- 0.3 7

Be < 51.8 <39.6 < 44.2 < 55.7 < 51.6 40 K 1351 +/- 185 1320 +/- 148 1289 +/- 149 1342 +/- 170 1482 +/- 166 54 Mn 9 <7.0 <4.3 <5.0 <3.8 <4.2 5

Fe 8 < 10.5 <11.7 < 13.6 <8.7 <6.0 5

Co 0 < 4.8 <5.0 <2.8 <3.7 <5.8 6

Co < 5.4 <4.5 <3.4 <3.9 <6.7 65 Zn < 8.4 < 10.4 <9.5 <8.3 <9.0 Nb 95 < 9.4 <4.0 <5.1 <4.3 <5.1 Zr 954 < 13.3 <7.2 <9.5 <7.1 < 10.2 13 Cs 7 <8.0 <6.1 <4.1 < 4.2 <4.7 1 3 Cs < 7.5 <6.6 <5.6 <7.2 <7.1 1 40 Ba < 27.6 < 19.4 < 12.0 < 23.7 < 23.6 1 40 La <3.5 <6.1 < 1.6 <4.9 < 9.4 144 Ce < 51.4 <43.0 < 29.2 < 50.8 < 46.4

-- page 106 of 122 --

TABLE 13 (continued)

Date 01 Aug 01 15 Aug 01 29 Aug 01 12 Sep 01 26 Sep 01 Collected 1131

<0.5 <0.4 < 0.4 < 0.3 < 0.2 90 Sr 0.7 +/- 0.3 0.5 +/- 0.2 2.5 +/- 0.5 3.1 +/- 1.0 <0.5 7

Be < 42.9 < 31.0 < 51.1 < 24.4 < 51.1 40 K 4 1390 +/- 154 1384 +/- 126 1299 +/- 165 1353 +/- 106 1295 +/- 168 5

Mn 9 < 3.4 <3.7 <3.2 < 2.4 < 5.6 5

Fe 8 < 11.7 <5.0 < 11.1 < 7.2 < 10.5 5

Co <5.0 <2.0 <7.0 < 1.8 <5.9 Co60 <2.1 <3.6 <6.0 < 3.2 <4.2 65 Zn <7.1 <9.5 < 9.4 < 6.8 < 12.2 Nb 9s <5.1 < 4.2 <6.2 < 2.9 <3.5 95 Zr 4 < 11.0 <5.8 <8.6 <7.1 < 14.5 13 Cs <7.4 <2.3 <6.0 <5.1 <5.5 1 37 Cs 40 < 6.2 < 4.2 < 5.4 <3.8 <8.7 1

Ba < 29.0 < 13.0 < 17.8 < 10.8 < 18.9 1 40 La 4 <3.7 < 4.4 <2.9 < 2.4 <2.7 14 Ce < 37.7 < 33.4 < 48.3 < 29.9 < 36.3 Date 11 Oct 01 24 Oct 01 28 Nov 01 26 Dec 01 Collected 1131 <0.4 <0.5 < 0.4 < 0.4 90 Sr 0.7 +/- 0.3 0.9 +/- 0.3 0.7 +/- 0.3 0.7 +/- 0.3 Be7 < 21.8 < 54.5 < 24.5 <43.6 40 K 1093 +/- 98 1253 +/- 155 1319 +/- 113 1280 +/- 168 54 Mn 9 < 2.4 <4.3 <4.5 <6.7 5

Fe <6.0 <9.2 < 4.4 < 15.6 Co55 <3.3 <6.0 <3.0 <5.0 60 Co <2.8 <3.9 <3.3 <6.7 65 Zn <6.8 < 10.5 <6.0 <9.4 Nb 9s <3.5 <5.2 <2.7 <6.9 95 Zr <6.1 < 14.2 < 4.4 <10.0 1 34 Cs <3.1 <4.3 <4.3 <4.5 1 37 Cs <2.3 <4.3 <4.1 <6.9 1 40 Ba < 11.8 < 26.3 < 12.9 <32.7 1 40 La <3.8 <2.3 <2.7 <3.7 14 4 Ce < 23.3 < 47.6 < 28.3 <42.6

-- page 107 of 122 --

TABLE 14 CL-I GRASS ACTIVITY (pCi/g wet)

Date 25 Apr 01 09 May 01 23 May 01 06 Jun 01 20 Jun 01 Collected Be 7 1.01 +/- 0.23 0.76 +/- 0.20 0.61 +/- 0.18 1.58 +/- 0.22 1.02 +/- 0.21 40 K 5.36 +/- 0.57 9.44 +/- 0.67 5.48 +/- 0.46 4.30 +/- 0.41 5.17 +/- 0.40 Mn 54 9

< 0.015 < 0.012 < 0.015 < 0.014 < 0.012 5

Fe < 0.020 < 0.038 < 0.023 < 0.019 < 0.022 Co58 < 0.025 < 0.017 < 0.010 < 0.007 < 0.010 00 60 < 0.019 < 0.019 < 0.013 < 0.016 < 0.008 6

Zn s < 0.035 < 0.035 < 0.027 < 0.020 < 0.026 N b95 < 0.011 < 0.012 < 0.008 < 0.008 < 0.009 Zr95 < 0.035 < 0.024 < 0.032 < 0.025 < 0.032 1131 < 0.038 < 0.039 < 0.020 < 0.018 < 0.018 1 34 Cs 7 < 0.025 < 0.022 < 0.018 < 0.010 < 0.014 13 Cs 0 < 0.017 < 0.017 < 0.012 < 0.010 < 0.012 14 Ba 0 < 0.108 < 0.077 < 0.046 < 0.050 < 0.053 14 La 4 < 0.018 < 0.014 < 0.006 < 0.012 < 0.011 14 Ce < 0.141 < 0.103 <0.113 <0.110 < 0.095 Date 03 Jul 01 18 Jul 01 01 Aug 01 15 Aug 01 29 Aug 01 Collected 7

Be 0.60 +/- 0.22 0.19 +/- 0.11 2.23 +/- 0.30 1.02 +/- 0.30 1.29 +/- 0.24 40 K 4.77 +/- 0.48 3.34 +/- 0.42 5.67 +/- 0.58 5.54 +/- 0.72 4.93 +/- 0.46 54 Mn < 0.012 < 0.014 < 0.018 < 0.016 < 0.014 Fe698 < 0.031 < 0.021 < 0.035 < 0.062 < 0.028 5

Co < 0.015 < 0.013 < 0.018 < 0.016 < 0.013 00 60 < 0.012 < 0.010 < 0.018 < 0.027 < 0.014 65 Zn < 0.025 < 0.022 < 0.021 < 0.034 < 0.039 Nb95 < 0.016 < 0.007 < 0.012 < 0.015 < 0.007 Zr95 < 0.022 < 0.022 < 0.038 < 0.052 < 0.036 1131 134

< 0.018 < 0.012 < 0.022 < 0.028 < 0.027 Cs < 0.014 < 0.013 < 0.019 < 0.025 < 0.013 1 37 Cs < 0.016 < 0.013 < 0.017 < 0.028 < 0.019 140 Ba < 0.051 < 0.052 < 0.099 < 0.098 < 0.033 140 La < 0.010 < 0.014 < 0.015 < 0.018 < 0.013 44 Ce1 < 0.100 < 0.039 <0.114 < 0.188 < 0.151

-- page 108 of 122 --

TABLE 14 (continued)

Date 12 Sep 01 26 Sep 01 11 Oct 01 24 Oct 01 Collected Be 7 1.26 +/- 0.16 2.02 +/- 0.27 1.61 +/- 0.28 2.30 +/- 0.22 40 K

54 5.45 +/- 0.43 5.72 +/- 0.49 5.10 +/- 0.60 5.21 +/- 0.43 Mn < 0.016 < 0.016 < 0.022 < 0.016 Fe 5 98 < 0.021 < 0.026 < 0.037 < 0.015 5

Co 0 < 0.014 < 0.017 < 0.019 < 0.012 6

Co 5 < 0.006 < 0.011 < 0.012 < 0.012 6

Zn < 0.019 < 0.025 < 0.038 < 0.033 N b95 < 0.013 < 0.021 < 0.024 < 0.010 9 5 Zr < 0.024 < 0.038 < 0.036 < 0.030 1131 < 0.018 < 0.018 < 0.020 < 0.021 1 34 Cs < 0.016 < 0.014 < 0.018 < 0.012 Cs137 < 0.014 < 0.020 < 0.014 < 0.014 140 Ba 0 < 0.078 < 0.068 < 0.081 < 0.060 14 La 4 < 0.010 < 0.015 < 0.011 < 0.013 14 Ce < 0.045 < 0.153 < 0.093 < 0.066

-- page 109 of 122 --

TABLE 15 CL-2 GRASS ACTIVITY (pCiig wet)

Date 25 Apr 01 09 May 01 23 May 01 06 Jun 01 20 Jun 01 Collected 7 1.32 +/- 0.22 0.25 +/- 0.13 Be 6.96 +/- 0.44 0.42 +/- 0.13 0.39 +/- 0.10 40 K 3.47 +/- 0.46 5.61 +/- 0.42 4.82 +/- 0.30 5.33 +/- 0.44 5.16 +/- 0.37 54 Mn < 0.018 < 0.010 < 0.008 < 0.017 < 0.014 59 Fe < 0.022 < 0.019 < 0.027 < 0.030 < 0.026 Co0 8 < 0.010 < 0.007 < 0.005 < 0.008 < 0.013 Co60 < 0.015 < 0.012 < 0.008 < 0.017 < 0.010 Zn 6s < 0.030 < 0.031 < 0.018 < 0.033 < 0.023 95 Nb < 0.021 < 0.013 < 0.011 < 0.012 < 0.013 Zr9 s < 0.037 < 0.015 < 0.015 < 0.037 < 0.027 1131

< 0.039 < 0.015 < 0.017 < 0.023 < 0.012 1 34 Cs < 0.014 < 0.013 < 0.013 < 0.010 < 0.009 1 37 Cs < 0.016 < 0.007 < 0.007 < 0.017 < 0.009 1 40 Ba 0 < 0.081 < 0.039 < 0.039 < 0.070 < 0.052 14 La < 0.016 < 0.005 < 0.008 < 0.013 < 0.009 14 4 Ce < 0.120 < 0.109 < 0.055 < 0.064 < 0.063 Date 03 Jul 01 18 Jul 01 01 Aug 01 15 Aug 01 29 Aug 01 Collected 7

Be 0.19 +/- 0.16 0.46 +/- 0.27 1.07 +/- 0.34 0.63 +/- 0.32 0.98 +/- 0.24 40 K 3.88 +/- 0.60 4.13 +/- 0.62 8.67 +/- 0.96 6.39 +/- 0.74 5.90 +/- 0.51 54 Mn < 0.018 < 0.023 < 0.027 < 0.027 < 0.014 59 Fe < 0.024 < 0.034 < 0.042 < 0.035 < 0.026 58 Co < 0.019 < 0.022 < 0.023 < 0.024 < 0.014 60 Co < 0.023 < 0.017 < 0.038 < 0.025 < 0.017 Zn 6 < 0.032 < 0.053 < 0.076 < 0.045 < 0.019 95 Nb < 0.021 < 0.022 < 0.027 < 0.018 < 0.011 95 Zr < 0.017 < 0.026 < 0.047 < 0.044 < 0.017 1131 < 0.030 < 0.032 < 0.032 < 0.042 < 0.017 1 34 Cs < 0.019 < 0.017 < 0.036 < 0.032 < 0.012 1 37 Cs 0 < 0.020 < 0.020 < 0.014 < 0.026 < 0.017 14 Ba < 0.091 <0.113 < 0.082 < 0.112 < 0.062 140 La < 0.013 < 0.011 < 0.015 < 0.012 < 0.008 1 44 Ce < 0.126 <0.111 < 0.212 < 0.219 < 0.079

-- page 110 of 122 --

TABLE 15 (continued)

Date 24 Oct 01 12 Sep 01 26 Sep 01 11 Oct 01 Collected Be 7 1.18 +/- 0.35 1.61 +/- 0.23 0.69 +/- 0.20 1.54 +/- 0.26 40 K 5.03 +/- 0.72 7.61 +/- 0.55 4.80 +/- 0.53 5.15 +/- 0.43 54 Mn < 0.018 < 0.014 < 0.017 < 0.010 59 Fe < 0.046 < 0.027 < 0.038 < 0.025 58 Co < 0.019 < 0.010 < 0.011 < 0.009 60 Co < 0.033 < 0.010 < 0.023 < 0.013 6

Zn S < 0.055 < 0.021 < 0.021 < 0.040 Nb95 < 0.026 < 0.015 < 0.017 < 0.013 95 Zr < 0.043 < 0.019 < 0.030 < 0.037 1131 < 0.048 < 0.020 < 0.024 < 0.025 34 Cs' < 0.028 < 0.018 < 0.020 < 0.011 Cs 137 < 0.022 < 0.013 < 0.027 < 0.015 140 Ba < 0.079 < 0.056 < 0.103 < 0.066 140 La < 0.020 < 0.006 < 0.013 < 0.014 44 Ce' < 0.181 < 0.138 < 0.140 < 0.117

-- page 111 of 122 --

TABLE 16 CL-8 GRASS ACTIVITY (pCi/g wet)

Date 23 May 01 06 Jun 01 20 Jun 01 25 Apr 01 09 May 01 Collected 7

Be 0.69 +/- 0.21 0.57 + 0.18 0.61 +/- 0.17 2.12 +/- 0.30 1.02 +/- 0.29 40 K 7.78 +/- 0.69 10.55 + 0.63 7.39 +/- 0.55 6.02 +/- 0.60 7.32 +/- 0.75 54 Mn < 0.016 < 0.014 < 0.011 < 0.024 < 0.032 59 < 0.023 < 0.058 Fe < 0.061 < 0.038 < 0.038 Co58 < 0.013 < 0.010 < 0.017 < 0.023 < 0.023 60 Co < 0.016 < 0.014 < 0.013 < 0.019 < 0.023 65 Zn < 0.042 < 0.033 < 0.035 < 0.017 < 0.035 N b9s < 0.023 < 0.015 < 0.015 < 0.018 < 0.020 Zr 95 < 0.032 < 0.021 < 0.033 < 0.059 < 0.044 1131 < 0.034 < 0.023 < 0.027 < 0.029 < 0.041 34 Cs' < 0.013 < 0.018 < 0.015 < 0.021 < 0.029 13 7 Cs < 0.024 < 0.017 < 0.018 < 0.022 < 0.026 1 40 < 0.083 Ba < 0.087 < 0.087 < 0.103 < 0.078 0

La14 < 0.012 < 0.011 < 0.012 < 0.023 < 0.016 144 Ce < 0.123 < 0.115 < 0.139 < 0.177 < 0.130 Date 03 Jul 01 18 Jul 01 01 Aug 01 15 Aug 01 29 Aug 01 Collected 7 0.98 +/- 0.22 0.73 +/- 0.14 1.69 +/- 0.33 2.62 +/- 0.36 1.58 +/- 0.25 Be 40 K 6.42 +/- 0.61 6.02 +/- 0.21 6.57 +/- 0.71 5.78 +/- 0.56 5.84 +/- 0.55 54 Mn < 0.012 < 0.016 < 0.024 < 0.022 < 0.013 Fe 5 9 < 0.022 < 0.037 < 0.068 < 0.052 < 0.035 58 Co < 0.009 < 0.017 < 0.013 < 0.015 < 0.010 60 Co < 0.009 < 0.015 < 0.018 < 0.021 < 0.016 65 Zn < 0.047 < 0.031 < 0.033 < 0.032 < 0.025 95 Nb < 0.018 < 0.007 < 0.023 < 0.024 < 0.018 95 Zr < 0.030 < 0.020 < 0.038 < 0.033 < 0.030 1131 < 0.017 < 0.017 < 0.035 < 0.030 < 0.023 34 Cs1 < 0.018 < 0.010 < 0.031 < 0.016 < 0.018 37 Cs1 < 0.021 < 0.008 < 0.017 < 0.020 < 0.013 0

Ba14 < 0.061 < 0.046 < 0.088 < 0.088 < 0.063 40 La' < 0.010 < 0.007 < 0.027 < 0.014 < 0.015 1 44 Ce < 0.087 < 0.079 < 0.192 < 0.213 < 0.114

-- page 112 of 122 --

TABLE 16 (continued)

Date 12 Sep 01 26 Sep 01 11 Oct 01 24 Oct 01 Collected 7

Be 2.91 +/- 0.42 2.18 +/- 0.24 4.46 +/- 0.44 3.15 +/- 0.34 40 K 9.19 +/- 0.81 8.26 +/- 0.58 5.57 +/- 0.67 6.41 +/- 0.52 54 Mn < 0.025 < 0.010 < 0.027 < 0.017 Fe 59 < 0.033 < 0.030 < 0.047 < 0.029 Co086 0 < 0.030 < 0.013 < 0.022 < 0.014 Co < 0.023 < 0.014 < 0.034 < 0.019 65 Zn < 0.051 < 0.027 < 0.045 < 0.026 95 Nb < 0.026 < 0.012 < 0.024 < 0.017 Zr 95

< 0.035 < 0.019 < 0.054 < 0.042 1131 < 0.050 < 0.023 < 0.042 < 0.026 13 4 Cs < 0.027 < 0.019 < 0.031 < 0.013 13 7 Cs < 0.026 < 0.016 < 0.030 < 0.018 14 0 Ba < 0.156 < 0.055 < 0.134 < 0.071 1 40 La < 0.018 < 0.010 < 0.025 < 0.011 1 44 Ce < 0.153 < 0.073 < 0.188 < 0.106

-- page 113 of 122--

TABLE 17 CL-116 GRASS ACTIVITY (control)

(pCilg wet)

Date 25 Apr 01 09 May 01 23 May 01 06 Jun 01 20 Jun 01 Collected 7 0.47 +/- 0.24 Be 1.56 +/- 0.27 0.17 +/- 0.10 0.51 +/- 0.20 0.51 +/- 0.17 40 K 4 3.56 +/- 0.50 5.56 +/- 0.43 4.89 +/- 0.57 5.21 +/- 0.38 5.36 +/- 0.59 5

Mn < 0.009 < 0.010 < 0.019 < 0.012 < 0.012 59 < 0.025 < 0.029 < 0.052 < 0.029 < 0.024 Fe Cos8 < 0.012 < 0.007 < 0.011 < 0.008 < 0.015 00 60 < 0.008 < 0.011 < 0.020 < 0.013 < 0.015 65 Zn < 0.027 < 0.016 < 0.027 < 0.022 < 0.051 N b9s < 0.011 < 0.009 < 0.019 < 0.013 < 0.018 Zr95 < 0.043 < 0.031 < 0.d47 < 0.021 < 0.039 1131 < 0.025 < 0.016 < 0.027 < 0.016 < 0.028 134 Cs < 0.015 < 0.009 < 0.015 < 0.008 < 0.017 1 37 Cs 0 < 0.011 < 0.009 < 0.026 < 0.013 < 0.019 14 Ba < 0.054 < 0.049 < 0.091 < 0.063 < 0.068 14 0 La < 0.021 < 0.010 < 0.014 < 0.008 < 0.022 Ce144 < 0.089 < 0.076 < 0.131 < 0.127 <0.118 Date 18 Jul 01 01 Aug 01 15 Aug 01 29 Aug 01 03 Jul 01 Collected Be7 < 0.21 0.49 +/- 0.12 2.69 +/- 0.30 1.07 +/- 0.26 1.41 +/- 0.23 40 K 6.04 +/- 0.75 5.28 +/- 0.38 7.67 +/- 0.58 8.19 +/- 0.66 4.91 +/- 0.50 5 4 Mn < 0.020 < 0.012 < 0.018 < 0.017 < 0.016 59 Fe < 0.027 < 0.017 < 0.035 < 0.029 < 0.014 Co58 < 0.018 < 0.015 < 0.014 < 0.014 < 0.017 0060 < 0.015 < 0.015 < 0.011 < 0.021 < 0.021 65 Zn < 0.049 < 0.030 < 0.029 < 0.026 < 0.045 95 Nb < 0.024 < 0.011 < 0.016 < 0.020 < 0.011 Zr 95 < 0.041 < 0.027 < 0.019 < 0.043 < 0.024 1131 < 0.022 < 0.022 < 0.027 < 0.031 < 0.027 1 34 Cs < 0.025 < 0.016 < 0.014 < 0.021 < 0.014 Cs137 < 0.027 < 0.010 < 0.019 < 0.020 < 0.021 40 Ba' < 0.089 < 0.041 < 0.085 < 0.062 < 0.061 14 0 La < 0.016 < 0.015 < 0.011 < 0.008 < 0.007 14 4 Ce < 0.185 < 0.065 < 0.120 < 0.134 < 0.130

-- page 114 of 122 --

TABLE 17 (continued)

Date 12 Sep 01 26 Sep 01 11 Oct 01 24 Oct 01 Collected 7

Be 0.97 +/- 0.26 0.96 +/- 0.16 0.79 +/- 0.16 1.48 +/- 0.25 40 K 4.74 +/- 0.60 7.08 +/- 0.52 4.13 +/- 0.48 6.08 +/- 0.49 54 Mn < 0.022 < 0.012 < 0.011 < 0.012 Fe 5 9 < 0.023 < 0.016 < 0.041 < 0.040 Co58 < 0.018 < 0.015 < 0.012 < 0.013 Co60 < 0.026 < 0.014 < 0.015 < 0.032 65 Zn < 0.048 < 0.040 < 0.030 < 0.033 Nb 9s < 0.025 < 0.012 < 0.020 < 0.025 95 Zr < 0.060 < 0.034 < 0.029 < 0.038 1131 < 0.034 < 0.024 < 0.014 < 0.023 1 34 Cs < 0.031 < 0.010 < 0.011 < 0.025 1 37 Cs < 0.022 < 0.012 < 0.011 < 0.019 140 Ba < 0.107 < 0.064 < 0.082 < 0.057 140 La < 0.012 < 0.012 < 0.013 < 0.015 14 4 Ce < 0.219 < 0.102 < 0.060 < 0.172

-- page 115 of 122 --

TABLE 18 CL-114 GREEN LEAFY VEGETABLE ACTIVITY (Control)

(pCilg wet)

Date 27 Jun 01 27 Jun 01 27 Jun 01 25 Jul 01 25 Jul 01 25 Jul 01 Collected Sample Swiss Swiss Lettuce Cabbage Cabbage Kale Type Chard Chard Gross 5.63 +/- 0.16 2.67 +/- 0.07 5.63 +/- 0.16 2.51 +/- 0.03 4.18 +/- 0.08 4.20 +/- 0.09 Beta 7

Be < 0.24 < 0.05 <0.13 < 0.08 <0.11 < 0.20 40 K 5.56 +/- 0.66 2.53 +/- 0.23 6.40 +/- 0.42 3.08 +/- 0.23 3.84 +/- 0.36 3.54 +/- 0.44 54 Mn < 0.023 < 0.007 < 0.009 < 0.007 < 0.010 < 0.022 Fe 59 < 0.050 < 0.009 < 0.031 < 0.017 < 0.019 < 0.029 58 Co < 0.015 < 0.006 < 0.016 < 0.007 < 0.012 < 0.011 0

Co65 < 0.017 < 0.005 < 0.009 < 0.005 < 0.016 < 0.017 6

Zn < 0.027 < 0.005 < 0.018 < 0.021 < 0.012 < 0.033 95 Nb < 0.018 < 0.007 < 0.014 < 0.008 < 0.007 < 0.020 Zr 96 < 0.024 < 0.006 < 0.030 < 0.020 < 0.023 < 0.027 1131 < 0.034 < 0.010 < 0.021 < 0.009 < 0.016 < 0.017 1 34 Cs < 0.013 < 0.003 < 0.014 < 0.006 < 0.009 < 0.012 1 37 Cs < 0.028 < 0.004 < 0.020 < 0.007 < 0.011 < 0.018 140 Ba < 0.110 < 0.030 < 0.074 < 0.036 < 0.056 < 0.071 140 La < 0.019 < 0.003 < 0.008 < 0.010 < 0.006 < 0.015 1 44 Ce < 0.165 < 0.039 < 0.121 < 0.023 < 0.089 < 0.135 Date 29 Aug 01 29 Aug 01 29 Aug 01 26 Sep 01 26 Sep 01 26 Sep 01 Collected Sample Swiss Swiss Cabbage Kale Cabbage Kale Type Chard Chard Gross 2.91 +/- 0.06 4.42 +/- 0.09 4.58 +/- 0.10 2.38 +/- 0.07 4.26 +/- 0.12 6.55 +/- 0.19 Beta 7

Be <0.11 0.31 +/- 0.14 0.29 +/- 0.09 0.38 +/- 0.16 0.32 +/- 0.17 0.16 +/- 0.07 40 K 2.55 +/- 0.37 3.13 +/- 0.30 3.50 +/- 0.31 3.03 +/- 0.46 3.75 +/- 0.55 5.61 +/- 0.32 54 Mn < 0.008 < 0.009 < 0.007 < 0.013 < 0.027 < 0.008 Fe 5 9 < 0.014 < 0.021 < 0.012 < 0.024 < 0.055 < 0.010 58 Co < 0.005 < 0.007 < 0.006 < 0.009 < 0.016 < 0.006 60 Co < 0.012 < 0.007 < 0.009 < 0.024 < 0.015 < 0.006 6

Zn < 0.025 < 0.010 < 0.020 < 0.037 < 0.046 < 0.011 Nb 95 < 0.013 < 0.009 < 0.007 < 0.014 < 0.022 < 0.007 Zr 95 < 0.017 < 0.023 < 0.016 < 0.032 < 0.036 < 0.013 1131

< 0.013 < 0.014 < 0.014 < 0.018 < 0.034 < 0.014 Cs 134 < 0.010 < 0.007 < 0.008 < 0.016 < 0.024 < 0.010 Cs 137 < 0.006 < 0.006 < 0.008 < 0.008 < 0.023 < 0.010 40 Ba1 < 0.040 < 0.034 < 0.045 < 0.062 < 0.110 < 0.039 140 La < 0.013 < 0.007 < 0.004 < 0.013 < 0.021 < 0.008 14 4 Ce < 0.038 < 0.065 < 0.071 < 0.067 < 0.078 < 0.047

-- page 116 of 122 --

TABLE 19 CL-115 GREEN LEAFY VEGETABLE ACTIVITY (pCi/g wet)

Date 25 Jul 01 27 Jun 01 27 Jun 01 27 Jun 01 25 Jul 01 25 Jul 01 Collected Sample Swiss Swiss Lettuce Collards Cabbage Lettuce Chard Type Chard Gross 4.68 +/- 0.16 6.46 +/- 0.20 2.35 +/- 0.05 3.67 +/- 0.09 5.89 +/- 0.13 3.78 +/- 0.13 Beta 7

Be <0.17 < 0.17 < 0.12 <0.16 < 0.42 < 0.17 40 K 3.84 +/- 0.62 3.95 +/- 0.41 6.05 +/- 0.45 1.73 +/- 0.44 3.62 +/- 0.84 6.13 +/- 0.51 54 Mn < 0.017 < 0.013 < 0.017 < 0.013 < 0.043 < 0.016 Fe 59 < 0.051 < 0.020 < 0.022 < 0.024 < 0.044 < 0.041 8

Co0 < 0.016 < 0.008 < 0.010 < 0.014 < 0.041 < 0.012 60 Co < 0.020 < 0.013 < 0.013 < 0.009 < 0.029 < 0.020 65 Zn < 0.052 < 0.016 < 0.026 < 0.020 < 0.064 < 0.040 95 Nb < 0.012 < 0.011 < 0.013 < 0.015 < 0.037 < 0.019 Zr 95 < 0.013 < 0.031 < 0.021 < 0.029 < 0.065 < 0.031 1131 < 0.026 < 0.022 < 0.014 < 0.017 < 0.047 < 0.022 1 34 Cs < 0.011 < 0.016 < 0.013 < 0.011 < 0.031 < 0.015 1 37 < 0.020 Cs < 0.016 < 0.015 < 0.013 < 0.015 < 0.028 140 < 0.070 Ba < 0.091 < 0.069 < 0.042 < 0.062 < 0.127 1 40 < 0.057 < 0.018 La < 0.028 < 0.012 < 0.006 < 0.016 1 44 < 0.064 Ce < 0.103 < 0.101 < 0.066 < 0.064 < 0.179 Date 29 Aug 01 29 Aug 01 29 Aug 01 26 Sep 01 26 Sep 01 26 Sep 01 Collected Sample Swiss Mustard Cabbage Kale Cabbage Greens Kale Type Chard Gross 4.67 +/- 0.10 5.66 +/- 0.16 3.39 +/- 0.07 3.80 +/- 0.13 5.25 +/- 0.16 2.93 +/- 0.06 Beta Be7 <0.11 <0.17 0.22 +/- 0.12 < 0.14 < 0.22 < 0.34 40 K 2.10 +/- 0.30 4.11 +/- 0.50 5.07 +/- 0.54 2.19 +/- 0.30 3.81 +/- 0.58 4.88 +/- 0.88 54 Mn < 0.012 < 0.015 < 0.012 < 0.015 < 0.024 < 0.028 Fe 59 < 0.022 < 0.015 < 0.014 < 0.030 < 0.035 < 0.040 58 Co 60 < 0.011 < 0.011 < 0.010 < 0.016 < 0.023 < 0.027 Co < 0.010 < 0.012 < 0.013 < 0.010 < 0.025 < 0.027 65 Zn < 0.022 < 0.013 < 0.032 < 0.017 < 0.037 < 0.058 Nb 95 < 0.010 < 0.017 < 0.010 < 0.015 < 0.026 < 0.031 95 Zr < 0.016 < 0.015 < 0.011 < 0.028 < 0.039 < 0.029 1131 < 0.016 < 0.015 < 0.015 < 0.018 < 0.038 < 0.050 1 34 Cs < 0.009 < 0.018 < 0.015 < 0.016 < 0.016 < 0.020 1 37 Cs < 0.014 < 0.007 < 0.011 < 0.015 < 0.026 < 0.013 140 Ba < 0.045 < 0.062 < 0.028 < 0.073 <0.110 < 0.142 140 La < 0.008 < 0.012 < 0.008 < 0.009 < 0.022 < 0.030 1 44 Ce < 0.088 < 0.059 < 0.058 < 0.074 < 0.107 < 0.109

-- page 117 of 122 --

TABLE 20 CL-117 GREEN LEAFY VEGETABLE ACTIVITY (pCiig wet)

Date 27 Jun 01 27 Jun 01 27 Jun 01 25 Jul 01 25 Jul 01 25 Jul 01 Collected Sample Swiss Swiss Lettuce Cabbage Cabbage Lettuce Type Chard Chard Gross 3.75 +/- 0.12 4.44 +/- 0.16 9.06 +/- 0.29 2.22 +/- 0.04 6.56 +/- 0.13 4.70 +/- 0.09 Beta 7

Be 0 < 0.20 <0.10 < 0.22 < 0.07 < 0.17 0.26 +/- 0.14 4

K 3.47 +/- 0.52 4.44 +/- 0.40 6.90 +/- 0.70 2.27 +/- 0.29 6.51 +/- 0.66 5.98 +/- 0.39 54 Mn < 0.020 < 0.015 < 0.020 < 0.006 < 0.020 < 0.013 59 Fe < 0.028 < 0.028 < 0.054 < 0.025 < 0.027 < 0.026 Co58 < 0.015 < 0.009 < 0.020 < 0.010 < 0.019 < 0.010 00 60 5

< 0.015 < 0.012 < 0.026 < 0.005 < 0.014 < 0.067 6

Zn < 0.020 < 0.012 < 0.036 < 0.019 < 0.046 < 0.025 Nb95 < 0.017 < 0.009 < 0.028 < 0.010 < 0.022 < 0.006 Zr95 < 0.014 < 0.017 < 0.034 < 0.010 < 0.034 < 0.011 1131 < 0.018 < 0.021 < 0.028 < 0.014 < 0.036 < 0.018 13 Cs 4 < 0.015 < 0.010 < 0.015 < 0.006 < 0.022 < 0.011 Cs1 37 < 0.014 0

< 0.007 < 0.027 < 0.011 < 0.024 < 0.014 Ba14 < 0.092 < 0.053 <0.119 < 0.038 < 0.070 < 0.060 40 La1 < 0.014 < 0.007 < 0.018 < 0.008 < 0.018 < 0.006 14 4 Ce < 0.122 < 0.095 < 0.138 < 0.036 < 0.142 < 0.091 Date 29 Aug 01 29 Aug 01 29 Aug 01 26 Sep 01 26 Sep 01 26 Sep 01 Collected Sample Swiss Turnip Swiss Cabbage Kale Kale Type Chard Greens Chard Gross 5.03 +/- 0.13 3.37 +/- 0.08 5.58 +/- 0.11 3.61 +/- 0.11 6.51 +/- 0.20 5.89 +/- 0.17 Beta 7

Be 0.26 +/- 0.15 < 0.22 0.41 +/- 0.23 0.55 +/- 0.31 0.50 +/- 0.18 0.16 +/- 0.12 40 K 4.39 +/- 0.54 3.46 +/- 0.49 4.92 +/- 0.56 3.24 +/- 0.58 5.66 +/- 0.46 5.11 +/- 0.39 54 Mn < 0.022 < 0.017 < 0.013 < 0.017 < 0.014 < 0.007 59 Fe < 0.044 < 0.040 < 0.050 < 0.056 < 0.027 < 0.026 0058 < 0.018 < 0.016 < 0.017 < 0.020 < 0.009 < 0.012 Co60 < 0.023 < 0.018 < 0.017 < 0.025 < 0.009 < 0.010 65 Zn 5 < 0.046 < 0.020 < 0.042 < 0.040 < 0.028 < 0.015 9

Nb < 0.015 < 0.020 < 0.017 < 0.018 < 0.008 < 0.011 95 Zr < 0.021 < 0.022 < 0.015 < 0.052 < 0.030 < 0.018 1131 < 0.038 < 0.035 < 0.026 < 0.038 < 0.012 < 0.020 34 Cs1 < 0.016 < 0.026 < 0.016 < 0.025 < 0.016 < 0.008 37 Cs' < 0.022 < 0.019 < 0.013 < 0.020 < 0.017 < 0.009 0

Ba140 < 0.111 < 0.107 < 0.079 < 0.115 < 0.078 < 0.058 La14 < 0.024 < 0.011 < 0.014 < 0.031 < 0.010 < 0.006 44 Ce1 < 0.142 < 0.122 < 0.159 < 0.227 < 0.118 < 0.076

-- page 118 of 122 --

TABLE 21 CL-118 GREEN LEAFY VEGETABLE ACTIVITY (pCilg wet)

Date 27 Jun 01 27 Jun 01 27 Jun 01 25 Jul 01 25 Jul 01 25 Jul 01 Collected Sample Turnip Turnip Collards Kale Cabbage Greens Kale Type Greens Gross 5.93 +/- 0.18 5.35 +/- 0.17 4.94 +/- 0.16 2.87 +/- 0.06 4.64 +/- 0.11 4.47 +/- 0.10 Beta 7

Be <0.10 < 0.18 < 0.09 < 0.10 0.57 +/- 0.23 < 0.17 40 K 5.89 +/- 0.43 5.15 +/- 0.73 3.87 +/- 0.35 2.48 +/- 0.37 4.50 +/- 0.58 5.01 +/- 0.71 54 Mn < 0.008 < 0.021 < 0.009 < 0.008 < 0.015 < 0.021 59 Fe < 0.027 < 0.031 < 0.020 < 0.015 < 0.023 < 0.038 Co58 < 0.007 < 0.025 < 0.008 < 0.012 < 0.016 < 0.022 Co60 < 0.009 < 0.019 < 0.007 < 0.010 < 0.012 < 0.011 Zn 6s < 0.013 < 0.031 < 0.013 < 0.030 < 0.033 < 0.062 Nb95 < 0.011 < 0.024 < 0.011 < 0.013 < 0.021 < 0.025 Zr95 < 0.014 < 0.024 < 0.015 < 0.019 < 0.041 < 0.039 1131 < 0.014 < 0.035 < 0.017 < 0.012 < 0.022 < 0.021 Cs1347 < 0.006 < 0.016 < 0.006 < 0.009 < 0.011 < 0.026 1 3 Cs < 0.011 < 0.026 < 0.011 < 0.007 < 0.017 < 0.015 14 0 Ba < 0.052 < 0.138 < 0.038 < 0.048 < 0.075 < 0.090 1 40 La < 0.005 < 0.031 < 0.005 < 0.016 < 0.017 < 0.021 1 44 Ce < 0.057 < 0.081 < 0.038 < 0.066 < 0.073 < 0.080 Date 29 Aug 01 29 Aug 01 29 Aug 01 26 Sep 01 26 Sep 01 26 Sep 01 Collected Sample Golden Turnip Collard Turnip Cabbage Cabbage Greens Type Cross Greens Greens Gross 3.43 +/- 0.07 4.20 t 0.14 3.20 +/- 0.14 4.33 +/- 0.13 7.25 +/- 0.21 6.23 +/- 0.17 Beta 7

Be < 0.085 <0.17 0.37 +/- 0.20 <0.12 0.68 +/- 0.34 < 0.34 40 K 1.92 +/- 0.28 4.24 +/- 0.63 4.55 +/- 0.56 2.80 +/- 0.32 5.46 +/- 0.81 4.40 +/- 0.84 54 Mn < 0.008 < 0.026 < 0.014 < 0.010 < 0.020 < 0.036 Fe59 < 0.011 < 0.025 < 0.026 < 0.018 < 0.063 < 0.030 Co58 < 0.013 < 0.018 < 0.013 < 0.005 < 0.027 < 0.015 Co6o < 0.008 < 0.019 < 0.015 < 0.010 < 0.052 < 0.014 Zn"6 < 0.015 < 0.029 < 0.015 < 0.018 < 0.031 < 0.077 Nb 95 < 0.008 < 0.027 < 0.016 < 0.009 < 0.038 < 0.032 Zr 95 < 0.015 < 0.050 < 0.008 < 0.011 < 0.053 < 0.083 1131 < 0.013 < 0.030 < 0.020 < 0.011 < 0.049 < 0.046 Cs134 < 0.012 < 0.022 < 0.017 < 0.013 < 0.034 < 0.041 Cs137 < 0.005 < 0.026 < 0.011 < 0.008 < 0.032 < 0.035 140 Ba < 0.027 < 0.122 < 0.076 < 0.036 < 0.093 < 0.129 1 40 La < 0.006 < 0.018 < 0.009 < 0.006 < 0.026 < 0.021 14 4 Ce < 0.041 <0.111 <0.113 < 0.074 < 0.210 < 0.131

-- page 119 of 122 --

TABLE 22 CL-19 FISH ACTIVITY (pCi/g wet)

Date 19 Apr 01 19 Apr 01 19 Apr 01 19 Apr 01 Collected Type Bluegill Bass Carp Crappie 7

Be < 0.10 <0.15 < 0.16 < 0.011 40 K 2.70 +/- 0.40 3.22 +/- 0.40 3.06 +/- 0.43 2.92 +/- 0.34 54 Mn 9 < 0.011 < 0.014 < 0.011 < 0.011 5

Fe 8 < 0.033 < 0.021 < 0.043 < 0.027 5

Co 0 < 0.012 < 0.017 < 0.015 < 0.014 6

Co 5 < 0.009 < 0.009 < 0.012 < 0.010 6

Zn 5 < 0.023 < 0.035 < 0.015 < 0.024 9

Nb 5 < 0.013 < 0.018 < 0.031 < 0.018 9

Zr < 0.027 < 0.027 < 0.046 < 0.025 1 34 CS < 0.012 < 0.013 < 0.011 < 0.011 37 CS < 0.013 < 0.015 < 0.012 < 0.013 1 40 Ba < 0.130 < 0.121 < 0.313 < 0.317 140 La < 0.026 < 0.034 < 0.040 < 0.033 Ce144 < 0.026 < 0.041 < 0.056 < 0.095 Date 04 Oct 01 04 Oct 01 04 Oct 01 04 Oct 01 Collected White Type Bass Bluegill Bass Carp 7

Be <0.15 <0.18 <0.13 <0.16 40 K 2.74 +/- 0.48 2.23 +/- 0.62 2.66 +/- 0.35 2.46 +/- 0.39 54 Mn < 0.016 < 0.016 < 0.007 < 0.012 Fe5 9 < 0.034 < 0.040 < 0.017 < 0.046 58 Co < 0.018 < 0.025 < 0.014 < 0.012 60 Co < 0.023 < 0.020

  • 0.009
  • 0.011 65 Zn < 0.018 < 0.025 < 0.023 < 0.020 Nb95 < 0.033 < 0.027 < 0.019 < 0.022 95 Zr < 0.048 < 0.062 < 0.028 < 0.027 13 4 Cs < 0.023 < 0.025 < 0.014 < 0.013 1 37 Cs 0 < 0.017 < 0.012 < 0.012 < 0.009 14 Ba 0 < 0.269 < 0.258 < 0.120 < 0.152 14 La < 0.063 < 0.046 < 0.042 < 0.042 14 4 Ce < 0.141 < 0.161 < 0.032 < 0.039

-- page 120 of 122 --

TABLE 23 CL-105 FISH ACTIVITY (Control)

(pCilg wet)

Date 19 Apr 01 19 Apr 01 19 Apr 01 19 Apr 01 Collected Type Bluegill Bass Carp Crappie Be 7 <0.10 < 0.15 <0.12 < 0.55 40 K 2.40 +/- 0.28 2.97 +/- 0.36 2.82 +/- 0.39 3.38 +/- 0.76 54 Mn 9 < 0.006 < 0.014 < 0.014 < 0.051 5

Fe 8 < 0.027 < 0.028 < 0.022 < 0.123 5

Co < 0.010 < 0.009 < 0.018 < 0.062 60 Co < 0.008 < 0.008 < 0.009 < 0.029 65 Zn 5 < 0.018 < 0.021 < 0.017 < 0.075 9

Nb < 0.010 < 0.018 < 0.020 < 0.084 95 Zr < 0.028 < 0.022 < 0.036 < 0.078 1 34 Cs 7 < 0.011 < 0.015 < 0.010 < 0.051 13 Cs < 0.011 < 0.010 < 0.011 < 0.029 140 Ba < 0.133 < 0.201 < 0.225 < 0.148 140 La < 0.026 < 0.042 < 0.059 < 0.348 Ce"44 < 0.054 < 0.075 < 0.044 < 0.189 Date 04 Oct 01 04 Oct 01 04 Oct 01 04 Oct 01 Collected Type Bass Bluegill Crappie Carp Be 7 < 0.13 < 0.20 <0.16 <0.11 40 K 2.95 +/- 0.43 2.17 +/- 0.54 2.17 +/- 0.51 2.25 +/- 0.26 54 Mn < 0.011 < 0.023 < 0.017 < 0.010 59 Fe < 0.024 < 0.040 < 0.042 < 0.027 58 Co < 0.008 < 0.016 < 0.021 < 0.009 Co060 < 0.010 < 0.022 < 0.017 < 0.012 65 Zn < 0.013 < 0.046 < 0.031 < 0.022 95 Nb < 0.017 < 0.029 < 0.025 < 0.010 95 Zr < 0.021 < 0.072 < 0.031 < 0.022 34 Cs1 < 0.008 < 0.022 < 0.011 < 0.008 37 Cs1 < 0.014 < 0.021 < 0.007 < 0.008 40 Ba1 < 0.230 < 0.323 < 0.295 < 0.077 1 40 La < 0.053 < 0.045 < 0.113 < 0.023 44 Ce' < 0.054 < 0.143 < 0.077 < 0.042

-- page 121 of 122 --

TABLE 24 SHORELINE SEDIMENT ACTIVITY (pCi/g dry)

Location CL-71B CL-7B CL-1 05 CL-105 Date 19 Apr 01 04 Oct 01 19 Apr 01 04 Oct 01 Collected Gross Alpha <3.5 3.0 +/-1.3 <3.1 1.4 +/- 1.0 Gross Beta 5.5 +/- 2.3 12.1 +/-1.3 12.9 +/- 2.4 8.7 +/- 1.2 90 Sr < 0.027 < 0.017 0.11 +/- 0.023 < 0.017 Be 7 <0.17 < 0.30 < 0.24 < 0.22 40 K 7.85 +/- 0.63 8.55 +/- 0.73 8.81 +/- 0.70 7.12 +/- 0.65 Mn 54 < 0.018 < 0.011 < 0.012 < 0.020 59 Fe < 0.069 < 0.010 < 0.034 < 0.070 Co58 < 0.026 < 0.033 < 0.021 < 0.027 Co60 < 0.015 < 0.022 < 0.017 < 0.015 Zn65 < 0.065 < 0.056 < 0.055 < 0.065 N b95 < 0.034 < 0.055 < 0.036 < 0.037 95 Zr < 0.035 < 0.055 < 0.045 < 0.049 1 34 Cs < 0.026 < 0.032 < 0.028 < 0.024 Cs137 < 0.014 < 0.018 < 0.015 < 0.018 1 40 Ba 0 < 0.269 < 0.648 < 0.440 < 0.985 4

La1 < 0.104 < 0.167 < 0.070 <0.116 44 Ce' < 0.056 < 0.137 < 0.057 < 0.068

-- page 122 of 122 --