Superfund Record of Decision (EPA Region 6): Tenth Street Dump/Junkyard, OklahomaCity, OK. (First Remedial Action), September 1990

摘要

The 3.5-acre Tenth Street Dump/Junkyard site is an inactive landfill in OklahomaCity, Oklahoma, within the North Canadian River's 100-year floodplain. From 1951 to 1979, the site was used, in succession, as a municipal landfill, a privately owned and operated salvage yard, and an automobile salvage yard. Waste materials accepted by the first salvage yard included paint thinners, old transformers, and tires. Dielectric fluid that contained PCBs was drained from old transformers, stored in barrels, and sold. In 1983, EPA site inspections located 20 drums, some of which were corroded and leaking contaminated material into the soil. In 1985, EPA completed removal actions. The Record of Decision addresses soil contamination at the site. It is estimated that 8,500 cubic yards of soil are contaminated by PCBs, with 7,500 cubic yards of the total having PCBs levels above the TSCA PCB spill cleanup policy level of 25 mg/kg. The primary contaminants of concern affecting the soil are organics including PCBs.