Wednesday, August 13, 2014

EPA: Caps working at Cinnaminson, NJ Superfund site

                                                      Photo: Moorestown Patch 
No further action is needed to address the capping of two closed landfills at the Cinnaminson Groundwater Contamination Superfund site in the New Jersey
townships of Cinnaminson and Delran, the EPA has determined.

In a news release, the agency reported:

"The site, which covers approximately 400 acres, includes residential and industrial properties and the two landfills. As a result of historic operations throughout the site, the groundwater and soil were contaminated with volatile organic compounds and heavy metals, which can have serious health effects.

"To date, the landfills have been covered with protective caps to prevent water from flowing through them and a system has been constructed to collect gas generated from the landfills. In addition, contaminated groundwater in the area had been pumped and then treated to prevent contaminants from spreading.

"The EPA determined that no further actions with respect to the capping of the landfills are needed because the actions already taken are effective. The EPA reviewed conditions at the site and has determined that the threat of further release of contaminants from the landfills to the groundwater has been addressed. Groundwater monitoring conducted over the past 26 years confirms the effectiveness of the previous capping of the landfills.

"An assessment regarding the continued operation of the groundwater extraction and treatment system is ongoing. The local drinking water supply is monitored regularly to ensure that water meets drinking water standards and is safe to consume, which it currently is.

"The EPA held a public meeting in Cinnaminson on May 12, 2014 to explain its plan. The EPA took public comment for 30 days and considered public input before finalizing its decision.

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"The landfill property on the site was originally a sand and gravel mining operation. Later, solid waste including hazardous substances were dumped in the mining pits. Sanitary Landfill, Inc. operated the landfills from 1970 until they closed in the 1980s. The site was first addressed by the New Jersey Department of Environmental Protection, with the EPA taking over when the site was added to the federal Superfund list in 1986."

Read the full EPA release here

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