Lower Monumental Dam Cooling Water Strainers

The U.S. Army Corps of Engineers Walla Walla District is seeking to procure six 10-inch Class 150 duplex strainers for cooling the powerhouse main generator units at Lower Monumental Lock and Dam in Kahlotus, Washington. The solicitation (W912EF25Q0014) requires strainers with specific technical specifications, including a minimum operational pressure rating of 125 PSIG, minimum flow capacity of 2200 GPM, and the ability to operate in raw water temperatures between 32-80°F. Contractors must have at least 10 years of experience manufacturing similar duplex strainers and provide comprehensive documentation, including operation and maintenance manuals, as-built drawings, and a minimum one-year warranty. The solicitation has undergone three amendments, with the most recent extending the offer due date to January 30, 2025, at 11:00 AM PST. Evaluation criteria appear to focus on technical compliance, manufacturing experience, and the ability to meet detailed specifications for materials, performance, and delivery.

The contract is set aside exclusively for small businesses under NAICS code 333998, with a size standard of 700 employees. Delivery of the strainers is required within 30 weeks of contract award, with FOB destination to Lower Monumental Lock and Dam. The procurement includes additional requirements for spare parts, such as two complete basket assemblies, two sets of valve operating components, and two sets of consumable parts. The strainers will be installed by government employees approximately 27 feet below downstream water level, with specific material requirements including cast carbon steel ASTM A216 WCB housing, Type 304 stainless steel baskets with 1/8" perforations, and bronze/stainless steel valve components. While specific award value is not disclosed, the technical complexity and specialized nature of the equipment suggest a potentially significant contract value for the selected small business contractor.