Mattiace Petrochemical Co Inc

⚠ Superfund · Construction complete

The EPA addressed the site in two stages: emergency actions and a long-term remedial phase focused on soil gas and groundwater cleanup. The EPA completed the emergency actions between 1988 and 1992. Since then, the facility has been on the NPL and undergoing long-term cleanup of groundwater and soil gas based primarily on RODs issued in 1991 and 2014.

Location

CityGlen Cove
CountyNassau County
StateNew York
Coordinates40.86080, -73.64320

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 09/01/1984
  2. Proposed to the National Priorities List — 06/24/1988
  3. Finalized on the National Priorities List — 03/31/1989
  4. Remedial Investigation Started — 09/29/1988
  5. Remedy Selected — 09/27/1990
  6. Final Remedy Selected — 06/27/1991
  7. Remedial Action Started — 03/25/1991
  8. Final Remedial Action Started — Estimated Sep - Nov 2026
  9. Construction Completed — 06/30/2000
  10. Deleted from National Priorities List — Not Yet Achieved

EPA references

Other Superfund sites in Nassau County

EPA-regulated facilities nearby

Understanding this Superfund site

Mattiace Petrochemical Co Inc is a federal Superfund site in New York. The Superfund program, created by Congress in 1980, addresses sites where hazardous substances have been released or threaten release into the environment. EPA scores potential sites using the Hazard Ranking System; those that score high enough are placed on the National Priorities List.

Current status: Construction complete. Physical construction of the cleanup remedy is complete, though long-term monitoring and institutional controls typically continue for years or decades. Groundwater treatment systems, for example, often run long after surface cleanup finishes.

EPA has identified 10 contaminants of concern at this site, including 1,1,1-trichloroethane, 1,1-dichloroethane, 1,1-dichloroethene. Contamination has been detected in free-phase napl, groundwater, soil, liquid waste.

If you live near this site and have health concerns, your state health department can provide site-specific guidance. EPA maintains a community involvement program for most NPL sites, and site documents — including the Record of Decision, five-year reviews, and public health assessments — are typically available through EPA's Superfund site profile.