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9 New Hazardous Waste Sites Added to the Superfund National Priorities List (NPL)

Diaz Chemical Corporation

Diaz Chemical Corporation

EPA added nine new hazardous waste sites to the Superfund National Priorities List (NPL) on July 22, 2004. The nine sites include former mining sites, a former wood treatment site, manufacturing facilities, and sites that have contaminated ground water. The sites contain a wide array of contaminants, including lead, arsenic, polychlorinated biphenyls (PCBs), and volatile organic compounds.

EPA selected these sites based on various factors including: risk to human health and the environment; the urgency of the need for response; projected total costs to the Fund; maintenance of a strong enforcement program; leverage of cleanups by others; and the level of support for listing from the State, tribes, and communities. The nine sites are:

  • Jacobsville Neighborhood Soil Contamination, Evansville, IN;
  • Annapolis Lead Mine, Annapolis, MO;
  • Picayune Wood Treating, Picayune, MS;
  • Grants Chlorinated Solvents Plume, Grants, NM;
  • Diaz Chemical Corporation, Holley, NY;
  • Peninsula Boulevard Groundwater Plume, Hewlett, NY;
  • Ryeland Road Arsenic, Heidelberg Township, PA;
  • Cidra Ground Water Contamination, Cidra, PR; and
  • Pike Hill Copper Mine, Corinth, VT.

The Diaz Chemical Corporation (Diaz) site in Holley, New York, has a long history of chemical releases into the nearby residential community. In January 2002, an air release left solidified drops of hazardous chemicals (2-chloro-6-fluorophenol and toluene) on homes and cars as far as 0.3 miles from the site. In addition, on-site soils and groundwater are contaminated with volatile and semivolatile compounds. The subsurface contamination at the site has required the installation of a groundwater treatment system, which EPA is operating. EPA is conducting several response actions at the facility, including funding the temporary relocation of affected residents who left their homes and conducting an intensive investigation at the facility and in the nearby residential area. EPA is also removing hazardous materials left behind at the facility when Diaz abandoned the property. To date, EPA has removed 2400 drums and 40,000 gallons of bulk chemicals from the facility.

The NPL identifies hazardous waste sites that appear to warrant remedial action. EPA will work with States, tribes, local communities, and other partners in identifying land reuse options and opportunities at these sites. Under its land revitalization agenda announced last year, EPA committed to including revitalization and reuse as a formal part of planning at every site. Nationally, more than 70 percent of all Superfund sites are cleaned up by those responsible for the pollution. Since the beginning of the Superfund program, EPA has secured more than $22 billion in cleanup commitments from polluters.

With this final rule adding nine new sites to the NPL, there are now 1,245 final sites on the NPL (1,087 non-Federal sites and 158 Federal facility sites) and 56 sites proposed and awaiting final agency action (50 non-Federal sites and 6 Federal facility sites). EPA has completed construction at 899 sites. For Federal Register notices and support documents for the most recent proposed and final sites, go to the New NPL Sites page.


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