On-Site Containment of PCB-Contaminated Soils

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by John Joseph Gushue, GHR Engineering Associates Inc, Environmental Div, New Bedford, MA, USA,
Robert Steven Cummings, GHR Engineering Associates Inc, Environmental Div, New Bedford, MA, USA,

Document Type: Proceeding Paper

Part of: Environmental Engineering:

Abstract: A remedial investigation/design project, with subsequent post-closure monitoring, was conducted for upland areas containing PCBs at an industrial site in New Bedford, Massachusetts. A sampling and analysis program was completed to define PCB levels in soil and groundwater, and evaluate subsurface migration potential. Since the subject property is located along the Acushnet River, tidal effects on groundwater flow and potential PCB transport were carefully examined. Based on the field investigation results, an evaluatiom of remedial options was prepared. After obtaining approvals, a steel sheet piling cutoff wall and hydraulic asphalt concrete cap system was installed to isolate contaminated soils in place, and eliminate tidal flushing of shoreline areas and erosion of surface soils. The steel sheet piling/asphalt cap system has been found to be highly effective and may be a model for cost-effective remedial action for the New Bedford Superfund Site. (Edited author abstract. )

Subject Headings: PCB | Soil pollution | Asphalt concrete | Tides | Remediation | Site investigation | Groundwater flow | Soil analysis | North America | Massachusetts | United States

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