The USA Letterkenny Southeast Area site is on a 19,500-acre active U.S. Army facility in Chambersburg, Franklin County, Pennsylvania. Land use in the area is primarily agricultural with scattered residences and military facilities. Ground water flowing beneath the Southeast site discharges into two nearby streams. Since 1942, the U.S. Army has used the Area to overhaul, rebuild, and test wheeled and tracked vehicles; distribute Class III chemicals and petroleum; and store, maintain, demilitarize, modify, and demolish ammunition. These activities past industrial have involved the use and disposal of TCE, solvents, hydrocarbons, and metals. The Record of Decision (ROD) addresses contaminated soil in the Southeast Area, and is the first operable unit for that area. The selected remedial action for the site includes excavating and treating onsite 8,000 cubic yards of VOC-contaminated soil using low temperature thermal treatment; controlling vaporized contaminants using a secondary high-temperature combustor, or collecting these vapors by adsorption onto activated carbon; and backfilling the residual ash onsite.

"08/02/91." "PB92-963911." "EPA/ROD/R03-91/119." "Office of Emergency and Remedial Response."