# SAM #W912EF27QA011
USACE procurement for Lower Monumental diffuser grating materials
**Buyer:** USACE Walla Walla District
**Posted:** October 29, 2026
**Respond By:** November 13, 2026
**Identifier:** W912EF27QA011
**NAICS:** 332312, 423710, 423390
The U.S. Army Corps of Engineers is seeking materials for the Lower Monumental diffuser grating project in Washington.
- **Buyer:** U.S. Army Corps of Engineers, Walla Walla District, Contracting Division; solicitation contact named in the solicitation: Leanne Walling.
- **Procurement:** One-time supply of materials for the Lower Monumental Adult Collection Channel north entrance diffuser grating. The opportunity is a total small-business set-aside.
- **Amendment:** CLIN 0001’s I-beam length was corrected from 33 feet to 25 feet; the quantity remains 17.
- **Products and quantities:** 17 aluminum I-beams; 10 aluminum angles; 52 aluminum grating sections (part number 15-SG-4); 1,000 grating fasteners; 250 stainless-steel undercut anchors; 30 three-quarter-inch bolts; 80 half-inch bolts; 250 bolt isolation kits; and 10 neoprene isolation pads.
- **Notable requirements:** Deliver all materials within 50 days of award and provide shipment notice 15 days before shipment. Materials must meet the stated ASTM and ANSI specifications; anchors require at least 10 inches of effective depth, and isolation pads must be suitable for continuous water exposure. Government crane/operator, rigging, forklift, and dunnage support are available for offloading and storage.
- **OEMs and vendors:** No commercial OEMs or vendors are identified in the provided notice or attachments.
### Description
SOLICITATION AMENDMENT POSTED:
11/2/2026:
Solicitation amendment W912EF27QA011-0001 has been added to correct measurement in CLIN 0001
See attached for details
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LMA Diffuser Grating
See attachments for Soliciation package requirements.
[View original listing](https://sam.gov/opp/82fc7c1a4b434f9ca6262b5b23272fec/view)