Northwest Pipe & Casing/Hall Process Co

Regulatory timeline

1. February 7, 1992Proposed for the NPL
2. October 14, 1992Established on the NPL (final listing)
3. June 4, 2004Construction 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. June 4, 2024Projected five-year review (reinspection), cycle 4
2. June 4, 2029Projected five-year review (reinspection), cycle 5
3. June 4, 2034Projected five-year review (reinspection), cycle 6

Official EPA records