shenandoah road groundwater contamination


The Shenandoah Road Groundwater Contamination Superfund site (Site) is an area of contaminated groundwater which has impacted residential well drinking water in the Town of East Fishkill in an area known as Shenandoah. The area impacted by the groundwater contamination is approximately one mile southwest of the intersection of Interstate 84 and the Taconic State Parkway. There are approximately 140 homes in the immediate vicinity of the Site, which is a predominantly residential area, where local residences formerly obtained drinking water from individual wells which drew water from the bedrock aquifer contaminated with volatile organic compounds (VOCs). On April 13, 2000, the New York State Department of Health (NYSDOH) received information from a resident in the Shenandoah area which indicated possible contamination of a private residential well with tetrachloroethene (PCE). Residential well sampling conducted at the Site by the NYSDOH and EPA since April 2000 has indicated that a total of 60 residential wells have been contaminated at or above the Federal maximum contaminant level (MCL) of 5 parts per billion (ppb) for PCE and/or trichloroethene (TCE). Treatment systems were installed on all of these wells to remove the contaminants of concern. MCLs are the maximum permissible levels of a contaminant that may be present in water used for drinking purposes. The levels of PCE range as high as 1,600 ppb. In October 2000, EPA and the New York State Department of Environmental Conservation (NYSDEC) conducted investigatory work at a former commercial facility at 7 East Hook Cross Road, Hopewell Junction, New York and discovered a 1,200 gallon metal septic tank containing materials exhibiting extremely high concentrations of PCE. Information obtained by EPA and NYSDEC indicates the facility was used between the late 1960's and early to mid 1970's for the cleaning of microchip holders or “racks.” According to former employees of the facility, waste cleaning solvent (PCE) from this process was discharged into the septic system. As a result of these investigations, the Site was proposed to the National Priorities List (NPL). During excavation of the contaminated soil associated with the former septic tank, two additional PCE disposal areas were discovered. Also, in August 2001, EPA discovered a buried “acid pit” behind the former 7 East Hook Cross Road facility. Based on the high levels of PCE detected in the soil surrounding the acid pit, the acid pit was likely used for disposal of PCE. The septic system, other disposal areas and the acid pit are believed to be the sources of the groundwater contamination at the Site. Site Responsibility: This Site is being addressed through Federal and potentially responsible party actions.

Hazardous Ranking Score

50 / 100

A score of 28.5 or higher qualifies a site for the Superfund National Priority List.

Regional Contact

Region 2
Phone: (877) 251-4575

Contact Region



Site Inspection
Preliminary Assessment
Final Listing On NPL

Contaminants & Health Effects

      Endocrine Disrupter
      Reproductive Toxin
      Persistent, bioaccumulative and toxic


        African American
        American Indian and Alaska Native
        Native Hawaiian


        People living
        within a 1 mile radius


        Average Income


        Occupied homes

        Potentially Responsible Parties

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