Perfect World

Superfund / Oklahoma

NPL Site · EPA Region 6

Hudson Refinery

Cushing, Payne County, Oklahoma

Industry (inferred)Mining & Ore Processing
Smelting & refining
EPA IDOKD082471988
HRS score29.34
ProposedApril 23, 1999
ListedJuly 22, 1999
Construction completeNovember 23, 2010
Deleted

Regulatory timeline

  1. April 23, 1999Proposed for the NPL
  2. July 22, 1999Established on the NPL (final listing)
  3. November 23, 2010Construction completed

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. November 23, 2025Projected five-year review (reinspection), cycle 3
  2. November 23, 2030Projected five-year review (reinspection), cycle 4
  3. November 23, 2035Projected five-year review (reinspection), cycle 5

Official EPA records