Wayne Interim Storage Site. Annual site environmental report, calendar year 1985. Formerly Utilized Sites Remedial Action Program (FUSRAP). [FUSRAP]

Technical Report · Fri Aug 01 04:00:00 EDT 1986

OSTI ID:5473967

The monitoring program at the Wayne Interim Storage Site (WISS) measures uranium, radium, and thorium concentrations in surface water, groundwater, and sediment; radon and thoron gas concentrations in air; and external gamma radiation dose rates. Potential radiation doses to the public are also calculated. During 1985, annual average thoron concentrations at the WISS ranged from 1 to 11% of the DOE guide. Annual average radon concentrations ranged from 13 to 39% of the DOE guide. The highest measured external dose rate at the WISS was 606 mrem/y, which is about six times the natural background rate and is in an area of known contamination. The highest average annual concentration of uranium in surface water monitored in the vicinity of the WISS was 3.2% of the Derived Concentration Guide; for /sup 232/Th it was 2.2%; for /sup 226/Ra it was 0.3%; and for radium-228 it was 3.0%. In groundwater, the highest annual average concentration of uranium was 2.4% of the Derived Concentration Guide; for /sup 232/Th it was 1.4%; for /sup 226/Ra it was 0.9%; and for /sup 228/Ra it was 2.7%. While there are no concentration guides for stream sediments, the highest annual average concentration of total uranium was 2.70 pCi/g, for /sup 232/Th it was 3.78 pCi/g, for /sup 226/Ra it was 5.10 pCi/g, and for /sup 228/Ra it was 6.90 pCi/g. These concentrations are below or approximately equal to the decontamination criteria. Radon concentrations and external gamma dose rates at the site were lower than those measured in 1984. Radionuclide concentrations in surface water were equal to background levels, and groundwater concentrations were similar to 1984 levels. For sediments, insufficient data are available to permit the establishment of trends. The calculated total radiation dose to the maximally exposed individual at the WISS, considering several exposure pathways, was 7 mrem, or 7% of the DOE radiation protection standard.

• Research Organization: Bechtel National, Inc., Oak Ridge, TN (USA). Advanced Technology Div.
• DOE Contract Number: AC05-81OR20722
• OSTI ID: 5473967
• Report Number(s): DOE/OR/20722-103; ON: DE86015215
• Country of Publication: United States
• Language: English

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