| Abstract |
The 20-acre Western Sand & Gravel site is a former liquid waste disposal site on the boundary of Burrillville and North Smithfield, Rhode Island. Land use in the area is primarily semi-rural. From 1975 to 1979, approximately 12 acres of the site were used for the disposal of liquid wastes including hazardous substances and sewage. These wastes were dumped into 12 unlined lagoons and pits, and subsequently infiltrated through the porous soil and into the ground water. In 1980 at the request of the State, EPA removed approximately 60,000 gallons of VOC-contaminated liquid wastes from the lagoons. Remedial activities for the site have been divided into three operable units (OUs), addressed by three Records of Decision. The selected remedial action for the site includes natural attenuation of ground water; implementing a site monitoring program for sediment, ground water, and surface water; and implementing institutional controls to restrict consumption of ground water. However, if the cleanup is proceeding at an unacceptable rate, active restoration including pumping and treatment by sedimentation, filtration, air stripping, and carbon adsorption will be implemented. |
