Tda Auxiliary Water Supply Backup Debris Tender in USA - 143239195

Procurement Summary

Country: USA

Summary: Tda Auxiliary Water Supply Backup Debris Management

Deadline: 28 Jun 2026

Posting Date: 13 Jun 2026

Other Information

Notice Type: Tender

TOT Ref.No.: 143239195

Document Ref. No.: W9127N26BA019

Competition: ICB

Financier: Self Financed

Purchaser Ownership: Public

Tender Value: Refer Document

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Tender Details

The U.S. Army Corps of Engineer (USACE) Portland District (NWP) intends to solicit construction firms who are interested in submitting a competitive firm-fixed-price bid for this project. This PRESOLICITATION notice for the The Dallas Lock and Dam (TDA) Auxiliary Water Supply Backup Debris Management.
Project Background. The Dalles Lock & Dam is 192 miles from the mouth of the Columbia River near the city of The Dalles, Oregon. The dam is a concrete gravity and embankment structure that was constructed by U.S. Army Corps of Engineers (operationally administered by the Portland District) in the 1950s for the purposes of hydroelectric power generation and maintenance of a navigational pool (Lake Celilo). The construction of the dam also included northern and eastern fish ladders for the passage of fish within the Columbia basin to upstream spawning grounds. The East Fish Ladder (EFL) is the primary and most heavily used of the two systems; likely because of its location within the historical riverbed and the attraction flows produced by the powerhouse. The EFL is a pool and weir ladder located at the eastern extension of the powerhouse providing passage for Salmon, Steelhead, and several listed species of the Endangered Species Act (ESA). A key aspect of the ladder functionality is the attraction flow at the inlet; which in the case of the EFL is normally provided by attraction flow units (approx. 5, 000 cfs, ea.). An Auxiliary Water Supply Backup (AWSB) System was completed in 2020 that addressed risk profiles that had been studied since 2008 to provide an alternative source of attraction flow in the event that the turbine units failed (original to construction of the project). The AWSB is an auxiliary water source for the east, west, and south entrances of the EFL, consisting of a forebay inlet structures w/ protective trashracks, 10-ft diameter penstock through the eastern non-overflow concrete dam, 120-inch isolation and emergency shutoff valve, bifurcation to 7...
Notice ID: w9127n26ba019

Department/Ind. Agency: dept of defense

Original Set Aside: total small business set-aside (far 19.5)

Sub-tier: dept of the army

Office: w071 endist portland

Product Service Code: z2kz - repair or alteration of other conservation and development facilities

NAICS Code: 237990 - Other Heavy and Civil Engineering Construction

Inactive Dates: jul 13, 2026

Inactive Policy: 15 days after response date

Documents

 Tender Notice