摘要: This decision document presents the selected remedy for the Montana Pole and Treating Plant site (the Site), in Butte, Montana. This is the final action for the only operable unit for the Site. The operable unit includes all known... 展开 This decision document presents the selected remedy for the Montana Pole and Treating Plant site (the Site), in Butte, Montana. This is the final action for the only operable unit for the Site. The operable unit includes all known sources and contaminated media at the Site. This action addresses the principal threat remaining and provides for treatment of contaminated soils and groundwater. Some treatment residuals and soils contaminated at lower levels will remain on-site, such that the Site will require long-term management. The principle contaminants of concern at the Site are pentachlorophenol (PCP), polynuclear aromatic hydrocarbons (PAHs), polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans. This Record of Decision establishes cleanup levels for these and all other contaminants of concern at the Site. 收起