U.S. EPA Contaminated Site Cleanup Information (CLU-IN)


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COLUMBIA STEEL CASTING COMPANY LOWLANDS REMOVAL ACTION: REMEDIAL INVESTIGATION AND FEASIBILITY STUDY
Oregon Department of Environmental Quality, 329 pp, 2018

This feasibility study specifically addresses polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDDs/PCDFs) in soil in low-lying areas along the northern portion of the Columbia Steel Casting Company facility, referred to as the CCSC Lowlands. The proposed remedial action is to excavate soil in Sampling Unit-13 (SU-13) of the East Side Channel and treat residual contamination in additional SUs that contain elevated levels of PCDDs/PCDFs by application of activated carbon (e.g., SediMite™, Filtrasorb 400) to sequester the contaminants. Excavated soil will be transported off site to a Subtitle D landfill. The excavated area will be backfilled and restored to provide wetland functionality. https://www.deq.state.or.us/Webdocs/Controls/Output/PdfHandler.ashx?p=a68b6933-f59b-4561-b0ff-918bcfa139db.pdf



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