Weldon Spring site: Annual environmental monitoring report, Calendar year 1986

Technical Report · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6563279

This report represents a summary of the environmental monitoring activities conducted during 1986 in and around the Weldon Spring Site (WSS), a US Department of Energy surplus facility located in St. Charles County, Missouri. The WSS is part of the Surplus Facilities Management Program, a DOE program to plan and manage the final disposition of retired DOE-owned facilities. The WSS comprises two (2) physically separate areas: the 89.5-hectare (221-acre) Weldon Spring Chemical Plant (WSCP) and Weldon Spring Raffinate Pits (WSRP) area, and the 3.6-hectare (9-acre) Weldon Spring Quarry (WSQ) area. The WSRP and WSQ areas are presently used for the interim storage of radioactively contaminated waste materials. The WSS was formerly used for the processing of radioactive materials. Radioactivity, above current applicable limits for areas of unrestricted use, exists at the site, and elevated levels of radiation will be present until remedial action is completed. The monitoring program at the WSS during 1986 measured uranium, radium-226, and thorium-230 concentrations in surface water, groundwater, and sediment; radon gas concentrations in air; and external gamma radiation exposure rates. Potential radiation doses to the public were also calculated, based on assumed exposure periods and the above measurements. Radon concentrations, external gamma exposure rates, and radionuclide concentrations in groundwater and surface water at the site were generally equivalent to previous years' levels. The maximum calculated annual radiation dose to a hypothetically exposed individual at the WSRP and WSCP area was 3 mrem, or 3% of the DOE radiation protection standard. The calculated annual maximum radiation dose to a hypothetically exposed individual at the WSQ was 0.5 mrem, or less than 1% of the DOE radiation protection standard of 100 mrem. Therefore, based on the data and dose calculations, the site currently complies with DOE Offsite Dose Standards. 14 refs., 18 figs., 10 tabs.

• Research Organization: MK-Ferguson Co., St. Charles, MO (USA); Jacobs Engineering Group, Inc., St. Charles, MO (USA)
• DOE Contract Number: AC05-86OR21548
• OSTI ID: 6563279
• Report Number(s): DOE/OR/21548-T1; ON: DE87009219
• Country of Publication: United States
• Language: English

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54 ENVIRONMENTAL SCIENCES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
AIR QUALITY
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
DATA
DOSES
ECOLOGICAL CONCENTRATION
ELEMENTS
ENVIRONMENTAL QUALITY
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FEDERAL REGION VII
FLUIDS
GASES
GROUND WATER
HEAVY NUCLEI
HYDROGEN COMPOUNDS
INFORMATION
ISOTOPES
MANAGEMENT
METALS
MISSOURI
MONITORING
NONMETALS
NORTH AMERICA
NUCLEI
NUMERICAL DATA
OXYGEN COMPOUNDS
RADIATION DOSES
RADIATION MONITORING
RADIOACTIVE WASTE STORAGE
RADIOECOLOGICAL CONCENTRATION
RADIOISOTOPES
RADIUM 226
RADIUM ISOTOPES
RADON
RARE GASES
SEDIMENTS
STORAGE
SURFACE WATERS
THORIUM 230
THORIUM ISOTOPES
URANIUM
USA
WASTE MANAGEMENT
WASTE STORAGE
WATER
YEARS LIVING RADIOISOTOPES