This is a pre-solicitation notice for the purchase of two diesel-powered mobile air compressors on integrated trailers for the McNary Lock and Dam. The contract will be firm-fixed-price and set aside for total small business participation under NAICS code 333912. The performance location is the McNary Lock and Dam, operated by the U.S. Army Corps of Engineers' Walla Walla District. All solicitation documents will be released and available electronically via SAM.gov. Contractors must be registered in the System for Award Management (SAM) to be eligible for award.