Perfect World

Superfund / California

NPL Site · EPA Region 9

United Heckathorn Co.

Richmond, Contra Costa County, California

Industry (inferred)Chemical Manufacturing
Pesticides & agricultural chemicals
EPA IDCAD981436363
HRS score38.49
ProposedOctober 26, 1989
ListedMarch 14, 1990
Construction complete
Deleted

Regulatory timeline

  1. October 26, 1989Proposed for the NPL
  2. March 14, 1990Established on the NPL (final listing)

Projected reinspection cycle

CERCLA requires a five-year review while hazards remain on site. These dates are projected from this site's cleanup timeline — they are estimates, not EPA-published dates. Check the site progress profile for the actual review schedule.

  1. March 14, 2025Projected five-year review (reinspection), cycle 7
  2. March 14, 2030Projected five-year review (reinspection), cycle 8
  3. March 14, 2035Projected five-year review (reinspection), cycle 9

Official EPA records