Abstract |
The Dover Municipal Well 4 (DMW-4) site is located within the 500-year floodplain of the Rockaway River, in the Town of Dover, Morris County, New Jersey. Surrounding land use is mixed residential and commercial/light industrial. In 1980, sampling and analysis of ground water from DMW-4 identified the presence of VOCs-specifically, chlorinated solvents-above federal and state drinking water standards. Subsequently, DMW-4 was voluntarily removed from service by the Town, and standby Well 3 was activated as a potable water production well. The sources of VOC contamination have been traced to the Howmet Turbine Components Corporation (Dover Casting Division) and the New Jersey Natural Gas Company, both of which are under state administrative consent orders to remediate their individual properties. The ROD addresses remediation of the contaminated ground water in the shallow, intermediate, and deep aquifers at the DMW-4 site, as OU1. The primary contaminants of concern affecting the ground water are VOCs, including benzene, PCE and TCE, and, metals including lead. The selected remedial action for this site includes onsite pumping and treatment of contaminated ground water from both the intermediate and deep aquifers using air stripping to remove VOCs; discharging the treated water offsite to the public water supply system to be used for potable water, with reinjection of surplus quantities. |