Superfund Site: LITTLE VALLEY

Superfund Site Profile

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The Little Valley Superfund site is comprised of a trichloroethylene (TCE)-contaminated groundwater plume that extends approximately eight miles southeastward from the Village of Little Valley to the northern edge of the City of Salamanca, which is part of the Allegheny Indian Reservation, in Cattauragus County, New York.  The site is located in a rural, agricultural area with a number of small, active and inactive industries and more than 200 residential properties situated along Route 353, the main transportation route between Little Valley and the City of the Salamanca.

In 1982, the Cattaraugus County Health Department (CCHD) and the New York State Department of Environmental Conservation (NYSDEC), while investigating TCE contamination in the vicinity of a small manufacturing facility on Route 353, detected TCE in nearby private wells.  NYSDEC installed a number of monitoring wells in the area to investigate possible sources of the contamination, including a former drum storage area, a private disposal site next to the former drum storage area, an inactive municipal landfill which accepted industrial wastes, and industrial facilities.

Following the installation of treatment systems on private wells, EPA put the site’s long-term remedy in place, which consisted of soil remediation, a long-term groundwater monitoring program, institutional controls, and an evaluation of the potential for soil vapor intrusion into structures within the study area and mitigation, if necessary.