Port of Tacoma #062026-1038

Tru-Grit Site Remedial Dredging, Contaminated-Material Handling, and Cover Placement

The Port of Tacoma is seeking bids for remedial dredging and contaminated-material handling at the Tru-Grit site in Tacoma, Washington. - Buyer and location: Port of Tacoma; Tru-Grit site, Parcel 115, Tacoma, Washington. - Requested work: In-water/mechanical dredging, transloading and rehandling, onshore material handling, dewatering or solidification, hauling dredged material to an approved disposal facility, and placement of post-dredge residual-management cover and slope backfill. - The solicitation summary estimates approximately 13,500 in-place cubic yards of dredging, with contingency for re-dredging, and approximately 6,500 tons of sandy cover and backfill. These are planning estimates. - A separate interim-action plan describes Lower Slope Areas A and B: approximately 8,490 cubic yards of sediment removal, potentially up to 12,699 cubic yards with overdredging, followed by at least a 6-inch clean cover and backfill to a stable slope of 3H:1V or shallower. - Notable requirements: Protect water quality; capture, contain, treat, sample, and test potentially contaminated dewatering water and stormwater; use approved treatment and disposal methods; conduct dredging and post-placement monitoring, confirmation sampling, reporting, and contingency response. Related environmental documents also describe three years of long-term monitoring and applicable habitat-protection measures for port maintenance activities. - Agencies and stakeholders named: Washington State Department of Ecology, including its Southwest Region Office, Water Quality Program; U.S. Army Corps of Engineers, Seattle District; NOAA Fisheries/National Marine Fisheries Service; U.S. Environmental Protection Agency; and the Puyallup Tribe. The Washington State Department of Ecology’s Administrative Order 23535 and Construction Stormwater General Permit WAR314131 are identified in related project material. - OEMs and vendors: No product manufacturers, OEMs, named contractors, or prospective bidders are identified. Work is service-based, with no product part numbers. - Estimated value: $6 million–$10 million, plus Washington State sales tax.

Description

The Port of Tacoma is soliciting bids for remedial work at Tru-Grit, Parcel 115. The scope includes in-water dredging, transloading and rehandling, onshore material handling, dewatering, hauling material to a disposal site, and placement of post-dredge residual management cover. The estimated cost range is $6,000,000 to $10,000,000, plus Washington State Sales Tax (WSST). The site visit is not mandatory; bids are due October 28, 2026, at 2:00 PM UTC.

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