HW-80991 TABLE OF CONTENTS INTRODUCTION. II. ENVIRONMENTAL CONDITIONS. IT. 11 A. Radionuclides in the Columbia River 11 B. Radionuclides in Drinking Water 19 C. Radionuclides in Fish and Waterfowl 21 D. Radionuclides in Marine Organisms. 26 E. Radionuclides in the Atmosphere 28 F. Radionuclides in Milk and Agricultural Froduce 30 G. Concentrations of ysl in Cattle Thyroids . 38 H. Radioactive Particulates in the Atmosphere I. External Radiation. 40 J. Radioactive Wastes Released to Ground 43. RADIATION F XPOSURE A. The Maximum Individual . B. The Average Tri-City Resident . IV. CONCLUSIONS ACKNOWLEDGEMENTS Vi. Vil. Vill. REFERENCES APPENDIX A - RIVER AND RELATED SAMPLE RESULTS . AFlLENDIX B - ATMOSPHERIC AND BEEF THYROID SAMPLE RESULTS . IX. 116 APFENDIX C - FARM PRODUCE AND COMMERCIAL FOODSTUFF RESULTS . 132 XxX. APPENDIX D - EXTERNAL RADIATION EXPOSURE RESULTS APPENDIX LE - ANALYTICAL METHODS 181 188

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