Little Goose Dam Stilling Basin Sediment Removal
Closed Solicitation Posted
This opportunity was awarded. See the award notice from .
- Solicitation number
- W912EF25BA001
- Agency
-
ENDIST Walla Walla
US Army Corps of Engineers, Department of Defense
- Responses due
- Set-aside
- Total Small Business
Opportunity facts
- NAICS code
- 237990 Other Heavy and Civil Engineering Construction
- PSC
- Z1KB Maintenance Of Canals
- Place of performance
- Dayton, Washington 99328, United States
Notice details come from SAM.gov. Updated .
About this opportunity
The US Army Corps of Engineers Walla Walla District is soliciting sealed bids for the Little Goose Dam Stilling Basin Sediment Removal project, which involves removing approximately 28,000 cubic yards of sediment from the stilling basin using dredging and diving techniques, with disposal at the Joso Disposal Site. The project includes four primary line items: mobilization/demobilization, stilling basin dredge sediment removal, stilling basin diver sediment removal, and stilling basin condition dive inspection. Key requirements include comprehensive water quality monitoring, strict environmental protection protocols, a 10-calendar day mobilization period, and completion of in-water work between November 16, 2025, and February 28, 2026. The contract will be awarded using sealed bid procedures with evaluation based on lowest responsible bidder criteria. The original bid deadline of July 31, 2025, was extended to August 7, 2025, through amendment, and a mandatory site visit was conducted on July 9, 2025, at the Little Goose Lock and Dam Visitor Center.
This opportunity is designated as a Total Small Business set-aside under NAICS code 237990, with a special SBA provision requiring dredging firms to perform at least 40 percent of the volume dredged with their own equipment to qualify as small businesses. Three contractors submitted bids: WCT Marine & Construction, Inc., HME Construction, Inc., and Duwamish Services LLC, with unit prices ranging from $67.50 to $207.86 per cubic yard for sediment removal. The estimated contract value was revised through amendments from an initial range of $10-25 million down to $5-10 million. The project includes a 180-calendar day total performance period and requires contractors to maintain a minimum 2-foot distance from concrete structures during sediment removal operations. Performance will take place at Little Goose Dam on the Snake River near Dayton, Washington, with precise sediment removal required within elevation ranges between 466.5 feet and 481.82 feet.
Notice text
5 versions
Update #5 · Latest ·
Please see attached solicitation, solicitation amendent 0001, solicitation amendent 0002, solicitation amendent 0003, technical specifications, technical specifications amendment 0003, plans, plans amendment 0003, and site visit attendance list.
PLEASE NOTE: In accorcdance with the US Small Business Administration's Table of Small Business Size Standards NAICS code 237990's exception for Dredging: To be considered small for purposes of Government procurement, a firm or its similarly situated subcontractors must perform at least 40 percent of the volumedredged with their own equipment or equipment owned by another small dredging concern.
Update #4 ·
Please see attached solicitation, solicitation amendent 0001, solicitation amendent 0002, technical specifications, plans, and site visit attendance list.
PLEASE NOTE: In accorcdance with the US Small Business Administration's Table of Small Business Size Standards NAICS code 237990's exception for Dredging: To be considered small for purposes of Government procurement, a firm or its similarly situated subcontractors must perform at least 40 percent of the volumedredged with their own equipment or equipment owned by another small dredging concern.
Update #3 ·
Please see attached solicitation, solicitation amendent 0001, technical specifications, plans, and site visit attendance list.
PLEASE NOTE: In accorcdance with the US Small Business Administration's Table of Small Business Size Standards NAICS code 237990's exception for Dredging: To be considered small for purposes of Government procurement, a firm or its similarly situated subcontractors must perform at least 40 percent of the volumedredged with their own equipment or equipment owned by another small dredging concern.
Update #2 ·
Please see attached solicitation, solicitation amendent 0001, technical specifications, and plans.
PLEASE NOTE: In accorcdance with the US Small Business Administration's Table of Small Business Size Standards NAICS code 237990's exception for Dredging: To be considered small for purposes of Government procurement, a firm or its similarly situated subcontractors must perform at least 40 percent of the volumedredged with their own equipment or equipment owned by another small dredging concern.
Update #1 ·
Please see attached solicitation, technical specifications, and plans.
Files
Notice history
| Notice | Type | Posted |
|---|---|---|
| Little Goose Dam Stilling Basin Sediment Removal | Award Notice | |
| This notice | Solicitation | |
| Little Goose Dam Stilling Basin Sediment Removal | Pre-Solicitation |
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