The 60-acre GEMS Landfill site is located in Gloucester Township, New Jersey. Gloucester Township has owned the GEMS site from the late 1950's up to the present. During the time period the GEMS Landfill has been operated by various parties as a disposal site for solid, liquid and hazardous wastes and substances. Records indicate that a variety of industrial wastes including asbestos, solvents and other materials were disposed of at the GEMS site between 1970 and 1979. In 1980, sludge from the City of Philadelphia's northeast wastewater treatment facility was disposed of at GEMS. Analyses of the sludge revealed the presence of dichlorodiphenyl dichloroethane (DDD). The results of the RI show that ground water, surface water (Holly Run) and soil are severely contaminated with organic and inorganic hazardous substances. Also, volatile organic compounds are volatilizing into the atmosphere and significantly degrading air quality.