St. Louis Airport Site. Annual site environmental report, calendar year 1985. Formerly Utilized Sites Remedial Action Program (FUSRAP). Revision 1

Technical Report · Mon Sep 01 04:00:00 EDT 1986

OSTI ID:5297059

During 1985, the environmental monitoring program was continued at the St. Louis Airport Site (SLAPS) in St. Louis County, Missouri. The ditches north and south of the site have been designated for cleanup as part of the Formerly Utilized Sites Remedial Action Program (FUSRAP). The monitoring program at the SLAPS measures radon gas concentrations in air; external gamma radiation dose rates; and uranium, thorium, and radium concentrations in surface water, groundwater, and sediment. Potential radiation doses to the public are also calculated. Because the site is not controlled or regulated by the DOE, the DOE Derived Concentration Guides (DCGs) are not applicable to SLAPS, but are included only as a basis for comparison. The DOE DCGs and the DOE radiation protection standard have been revised. (Appendix B). During 1985, annual average radon levels in air at the SLAPS were below the DCG for uncontrolled areas. External gamma monitoring in 1985 showed measured annual gamma dose rates ranging from 3 to 2087 mrem/y, with the highest value occurring in an area known to be contaminated. The calculated maximum dose at the site boundary, assuming limited occupancy, would be 6 mrem/y. Average annual concentrations of /sup 230/Th, /sup 226/Ra, and total uranium in surface waters remained below the DOE DCG. The on-site groundwater measurements showed that average annual concentrations of /sup 230/Th, /sup 226/Ra and total uranium were within the DOE DCGs. Although there are no DCGs for sediments, all concentrations of total uraniu, /sup 230/Th, and /sup 226/Ra were below the FUSRAP Guidelines.

• Research Organization: Bechtel National, Inc., Oak Ridge, TN (USA). Advanced Technology Div.
• DOE Contract Number: AC05-81OR20722
• OSTI ID: 5297059
• Report Number(s): DOE/OR/20722-100-Rev.1; ON: DE87000850
• Country of Publication: United States
• Language: English

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54 ENVIRONMENTAL SCIENCES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
AIR
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
DATA
DOSE RATES
ELECTROMAGNETIC RADIATION
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FEDERAL REGION VII
FLUIDS
GAMMA RADIATION
GASES
GROUND WATER
HEAVY NUCLEI
HYDROGEN COMPOUNDS
INFORMATION
IONIZING RADIATIONS
ISOTOPES
LOW-LEVEL RADIOACTIVE WASTES
MATERIALS
MISSOURI
MONITORING
NORTH AMERICA
NUCLEI
NUMERICAL DATA
OXYGEN COMPOUNDS
RADIATION MONITORING
RADIATIONS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIOACTIVITY
RADIOISOTOPES
RADIUM 226
RADIUM ISOTOPES
REMEDIAL ACTION
SEDIMENTS
SURFACE WATERS
THORIUM 230
THORIUM ISOTOPES
USA
WASTES
WATER
YEARS LIVING RADIOISOTOPES