The 15-acre Osborne Landfill site is located in Pine Township, Pennsylvania. The landfill accepted wastes, including industrial wastes, from the 1950s until 1978. Waste materials included spent paint, asbestos, solvents, waste coolants, waste sand, waste acid, scrap metal, cooling system sludge, slag and waste oils. Disposal activities contaminated soil, groundwater, surface water and residential well water with hazardous chemicals.
The site�s long-term remedy, selected in 1990, included installation of a slurry wall, a clay cap and a leachate treatment system, groundwater monitoring, and institutional controls. A slurry wall has been constructed around the perimeter of the fill area to a depth of 40 feet, and a clay cap has been installed over the fill to reduce leaching of contaminants. In addition, leachate is being extracted from the fill area, treated and reinjected into the on-site mine pool. Operation and maintenance activities are ongoing. The site is being addressed through federal, state and Potentially Responsible Parties (PRP) actions, with the PRP as the lead.