Results of the groundwater monitoring program performed at the former St. Louis Airport Storage Site for the period of January 1981 through January 1983

Technical Report · Thu Mar 01 00:00:00 EST 1984

DOI:https://doi.org/10.2172/5250384· OSTI ID:5250384

Clark, C.; Berven, B. A.

Results of a two-year groundwater monitoring program performed at the former St. Louis Airport Storage Site in January 1981 though January 1983 are presented. Data indicate that radionuclides stored onsite are leaching into the groundwater; however, the radionuclide concentrations are well below the maximum permissible concentration (MPC) for effluents to unrestricted areas. The only radionuclide detected in measurable amounts in the groundwater at these wells was /sup 238/U. One well averaged approximately 1860 pCi/L of /sup 238/U during the two-year period. The maximum concentration of /sup 238/U observed at this well was 2230 pCi/L. This well water sample exceeded the maximum background /sup 238/U concentration (45 pCi/L) measured in groundwater throughout the state of Missouri by a factor of 50. Based on the results of the /sup 238/U concentration measured (in well water) at the former St. Louis Airport Storage Site, leaching of radionuclides is occurring, resulting in concentrations of /sup 238/U in the groundwater above background levels. However, the concentration of the radionuclides analyzed did not exceed the MPC for effluents as given in Appendix B, Table II, Column 2 of 10 CRF 20. Although there appears to be some movement of the groundwater into Coldwater Creek, adjacent to the site, due to dilution of the creek water, the concentrations of radionuclides in Coldwater Creek are expected to be substantially below MPC. 7 references, 11 figures, 5 tables.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5250384
• Report Number(s): ORNL/TM-8879; ON: DE84008206
• Resource Relation: Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

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LEACHING
GROUND WATER
RADIATION MONITORING
RADIOACTIVITY
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PROTACTINIUM 231
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