The Landfill and Development Company site is a 200-acre closed landfill in Burlington County, New Jersey, covering parts of Mount Holly, Eastampton, and Lumberton townships. The landfill accepted waste from 1968 until December 31, 1986, and was added to the National Priorities List in 1983. Cleanup construction wrapped up in September 2010, and the site now operates under long-term monitoring and maintenance overseen by the EPA.
Groundwater in shallow aquifers is the primary concern. EPA identified nine contaminants of concern, all found in groundwater. They include benzene, toluene, vinyl chloride, 1,2-dichloroethane, arsenic, acetone, dichloromethane, 2-butanone, and 4-methyl-2-pentanone. The deeper Englishtown aquifer beneath the site has not been affected.
Major cleanup actions include capping the landfill with clay in 1995, installing leachate and methane gas collection systems, and replacing shallow residential wells with deeper wells drawing from uncontaminated aquifers. A groundwater extraction and recirculation system ran from 2007 to 2015. A Classification Exception Area established in 2008 restricts groundwater use in impacted aquifers until cleanup standards are met. EPA assessments confirm that human exposure is under control and contaminated groundwater is stabilized with no unacceptable discharge to surface water.
The site has found productive reuse. In 2015, about 42,000 solar panels were installed on roughly 50 acres of the landfill cap, generating approximately 13 megawatts of electricity. As of December 2024, one on-site business was operating at the site. The most recent five-year review was completed in January 2026. The site has not yet been deleted from the National Priorities List.
Community members with questions can contact the EPA's Community Involvement Coordinator. Site records are available at the EPA's Superfund Records Center in New York City and at the Burlington County Library in Westampton, New Jersey.
