Superfund Record of Decision (EPA Region 7): Times Beach, St. Louis County, Missouri. Minker/Stout/Romaine Creek, Jefferson County, Missouri (Third Remedial Action), September 1988

摘要

The Minker/Stout/Romaine Creek (M/S/RC) site is located in the city of Imperial, Jefferson County, Missouri, 25 miles southwest of St. Louis. The site is an unincorporated, wooded residential area and is comprised of four noncontiguous areas: Minker, Stout, Cashel, and Sullins. It is within a distance of approximately 0.8 miles and includes the upper 6000 feet of Romaine Creek. Contamination at the site resulted from the use of dioxin-contaminated soil as fill material, and has spread as a result of erosion from these areas. Contaminated soil in all areas except the Stout area and Romaine Creek has been excavated and currently is stored in interim onsite storage. The total volume of contaminated soil at this site including the amount in temporary storage is estimated to be 12,000 cubic yards. The primary contaminant of concern affecting the soil at this site is 2,3,7,8-TCDD (dioxin).