◉ Perfect World

Superfund / Massachusetts

NPL Site · EPA Region 1

Lower Neponset River

Boston, Milton, Norfolk, Suffolk County, Massachusetts

Industry (inferred)Uncategorized
EPA IDMAN000102204
HRS score50.00
ProposedSeptember 9, 2021
ListedMarch 16, 2022
Construction complete—
Deleted—

Regulatory timeline

  1. September 9, 2021Proposed for the NPL
  2. March 16, 2022Established 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 16, 2027Projected five-year review (reinspection), cycle 1
  2. March 16, 2032Projected five-year review (reinspection), cycle 2

Official EPA records

Site progress profile →Site listing narrative →View location on map →