Lower Monumental Dam Diffuser Grating
Closed Solicitation Posted
This opportunity was awarded. See the award notice from .
- Solicitation number
- W912EF26QA079
- Agency
-
ENDIST Walla Walla
US Army Corps of Engineers, Department of Defense
- Responses due
- Set-aside
- Total Small Business
Opportunity facts
- NAICS code
- 332312 Fabricated Structural Metal Manufacturing
- PSC
- 5670 Building Components, Prefabricated
- Place of performance
- Kahlotus, Washington 99335, United States
Notice details come from SAM.gov. Updated .
About this opportunity
The U.S. Army Corps of Engineers, Walla Walla District, seeks procurement of one Lower Monumental Dam Adult Collection Channel North Entrance Diffuser Grating, with proposals due September 16, 2026. This is a total small business set-aside with a WOSB designation, and most recent amendment W912EF26QA0790002 (effective September 11) extended the response deadline from September 14 to September 16 and revised specification Section 05 50 14 regarding Undercut Anchors.
Place of performance is Kahlotus, Washington. Delivery must occur by December 10, 2026, with shipments restricted to Monday–Thursday, 7:00 AM–4:00 PM, and 15 days advance notice required. The contractor bears all transportation costs under FOB Destination terms.
The Bill of Materials specifies fabricated assemblies including 12 American Standard I-Beams, 10 angles, 52 aluminum grating units, 1,000 grating clips, 250 undercut anchors with hardware, 110 total bolts, 250 bolt isolation kits, and 10 isolation pads. All components must be constructed from new materials conforming to specified ASTM standards: 6061-T6 and 6063-T6 aluminum; Type 316 stainless steel for undercut anchors; isolation pads must be 100% virgin chloroprene with Shore A Durometer hardness of 605 and minimum 2,500 psi tensile strength. The grating must meet ANSI MBG 531-00 specifications with 15-SG-4 type, 2.5-inch depth, and 3/16-inch thick bearing bars. All supplied items carry a minimum one-year warranty against factory defects. Certified Mill Test Reports are required submittals for Government approval. Award will be made to the responsible offeror whose price-based conforming offer is most advantageous under a firm fixed-price arrangement. The NAICS code is 332312, Fabricated Structural Metal Manufacturing. Personnel require E-Verify employment eligibility verification, DoD/Army security training completion within 30 days of award, and NCIC-III and TSDB vetting for unescorted access to DoD installations. Inquiries must be submitted through ProjNet Bidder Inquiry system using key W6J4TY-XFAUVJ.
Notice text
3 versions
Update #3 · Latest ·
9/11/2026: Solicitation Amendment W912EF26QA0790002 added and response date extended from 14 September to 16 September 2026. See attachments for amendment details.
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9/1/2026: Solicitation Amendment W912EF26QA0790001 added
_______________________________________________
Please see attached.
Update #2 ·
9/1/2026: Solicitation Amendment W912EF26QA0790001 added
_______________________________________________
Please see attached.
Update #1 ·
Please see attached.
Files
Notice history
| Notice | Type | Posted |
|---|---|---|
| Lower Monumental Dam Diffuser Grating | Award Notice | |
| This notice | Solicitation | |
| Lower Monumental Diffuser Grating | Pre-Solicitation |
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