cinnaminson township (block 702) ground water contamination

1017 UNION LANDING ROAD

The Cinnaminson Groundwater Contamination site is an area-wide site that covers approximately 400 acres in Cinnaminson and Delran Townships in Burlington County, New Jersey. The site includes properties bounded by Union Landing Road, U.S. Route 130, River Road, and Taylors Lane. The Delaware River is located approximately 5,000 feet to the northwest, and U.S. Route 130 passes about 2,000 feet southwest of the site. The site consists of a landfill, residential properties, and light to heavy industrial properties. A number of the industrial facilities have petroleum underground storage tanks. Unlined slurry pits and cooling ponds are located on one industrial property. The landfill portion of the site originally began as a sand and gravel mining pit. During the late 1950s, municipal solid wastes were deposited in the completed unlined mining pits, while mining operations continued in other parts of the property until the late 1960s. After the mines were closed, large amounts of refuse and solid waste were deposited in the pits. Municipal and institutional wastes, bulky wastes, vegetable and food processing wastes, and industrial wastes, including hazardous substances, were deposited in two areas of the landfill. In 1980, operations ceased. A clay cap was installed over the landfill to restrict rain and surface water from infiltrating into the wastes, thus reducing the amount of contaminated liquid flowing from the site from entering the groundwater. The underlying aquifer is a source of drinking water for people living around the site. There are both public and private water supply wells within one mile of the site; however, the private wells are not being used for drinking water. Approximately 55,000 people live within a 3 mile radius of the site.