Superfund Success, Superfast

by Patti Collins, Proj. Mgr.; EPA Region 9, San Francisco, CA,
Adam Ng, P.E., Proj. Mgr.; ICF Kaiser Engrs., Oakland, CA,
Ram Ramanujam, P.E., Hazardous Substances Engr.; California Environmental Protection Agency, Dept. of Toxic Substances Control, Sacramento, CA,

Serial Information: Civil Engineering—ASCE, 1998, Vol. 68, Issue 12, Pg. 42-45

Document Type: Feature article

Abstract: After 15 years of indecision, unprecedented cooperation among regulatory agencies, community action groups, and Potentially Responsible Parties (PRPs) resulted in the completion of remedial construction for the McColl Superfund Site in record time. The remedial design and construction of a multi-layered RCRA-equivalent cover system, subsurface slurry wall barriers, reinforced earth structures, a gas collection and treatment system, and surface water infiltration controls was accomplished in 27.5 months. Special challenges in maintaining the aggressive construction schedule included limited access for heavy construction equipment, installation of slurry walls up steep slopes, and unanticipated waste materials encountered outside the cap footprint. On August 27, 1998, with a ceremonial chip shot onto the 7th hole of the restored golf course, the 8.8 ha site was transformed from a National Priorities List hazardous waste disposal site into a valued community recreational facility and wildlife sanctuary.

Subject Headings: California | Hazardous wastes | Remediation | Waste sites |

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