Abstract |
The 25-acre Lord-Shope Landfill site is an inactive hazardous waste landfill in Girard Township, Erie County, northwestern Pennsylvania. The site consists of a 4-acre landfill and adjacent areas of contaminated soil, surface water and ground water. The primary contaminants of concern affecting the landfill material, surrounding soil, and ground water are VOCs including benzene, PCE, and TCE; and metals including arsenic, chromium, and lead. The selected remedial action for the site includes in-situ vapor stripping using vacuum wells to volatize and remove VOCs from the landfill material and the surrounding soil; collection and treatment of gas emissions generated by the vapor stripping process using carbon filtration; ground water pumping and treatment including pretreatment for metal removal, followed by air stripping, to halt plume migration, with final discharge of treated ground water into the nearby surface tributaries; implementation of site access restrictions and institutional controls including ground water use restrictions. The estimated present worth cost for the remedial action is $5,760,000, which includes an annual O and M cost of $420,000 for years 1 - 2 and $310,000 for years 3 - 50. |