The Rockaway Borough Well Field site is located in Rockaway Borough, Morris County, New Jersey, and consists of three municipal supply wells which are in a glacial aquifer designated by EPA as the sole source aquifer for Rockaway Borough and the surrounding communities. High concentrations of TCE and PCE have been detected in the aquifer since 1980, but no sources of contamination have been identified. In 1981, the Borough of Rockaway constructed a three-bed granular activated carbon adsorption system to treat contaminated well water. Treatment has effectively reduced volatile organic contaminant concentrations in finished water to less than 1 part per billion (ppb). Although thirteen VOCs have been detected in the well water, TCE and PCE are the primary contaminants of concern. The site was listed on the NPL in December of 1982, and the RI/FS was initiated in 1985. The remedial action for the Rockaway Borough site includes maintaining the existing filtration system and modifying operations to ensure compliance with Safe Drinking Water Act standards and EPA continuing the RI/FS in an attempt to identify the source and extent of contamination and evaluate alternatives to address source control. Estimated capital cost of remedial action is zero with annual O&M costs of $74,800.

"EPA/ROD/R02-86/034." Cover title: Superfund record of decision (EPA Region 2) Rockaway Borough Well Field, Rockaway Borough, New Jersey, September 1986. "PB87-189353." Final ROD report.