West Lot Documents

The West Lot Site, which encompasses about two acres and is undeveloped, was used for waste disposal and fire training in the 1950s and early 1960s. Waste was burned in an 80-foot diameter pit. Extensive investigation of soil and groundwater was conducted in the early 1990s, and the results indicated the presence of volatile organic compounds (VOCs) in the soil and groundwater and polychlorinated biphenyls (PCBs) in the soil. In 1994, in accordance with New York State requirements, soil from the burn pit area was excavated and placed into a containment cell as an interim remedial measure. Further excavation activities were conducted in 1999 to remove additional impacted soil from the former burn pit area, fully satisfying the soil remedy requirement in the Record of Decision and the Order on Consent issued byNYSDEC.

A groundwater extraction system was installed in 2001 and became fully operational in 2002. An extraction well pumped water from the burn pit area to a groundwater collection and treatment unit. The treatment unit removed VOCs from the extracted groundwater with an air stripper prior to discharge to the municipal storm sewer. Continued groundwater monitoring indicated a residual source of impact to groundwater. Further soil removal in the burn pit area was conducted in 2005 to enhance the groundwater cleanup. Concentrations in groundwater dropped off rapidly after the 2005 removal. The extraction well was shut down in January 2007, and the site is now being evaluated for closure within New York’s Inactive Hazardous Waste Disposal Site program. The site is listed as a Class 4 site, which is considered properly closed but requiring continued management.



 

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