The U.S. Army Corps of Engineers Louisville District seeks construction services to repair/renovate HVAC and fire suppression systems in Building 1203 at March Air Reserve Base, California. Work includes a new Dedicated Outside Air System unit, replacement of AHU-02, replacement of about 100 feet of waterline, and related site and ductwork improvements. The contract will be firm-fixed-price with an anticipated construction magnitude between $1 million and $5 million, set aside for total small business under NAICS 236220. Contract duration is 500 calendar days from Administrative Notice to Proceed. The solicitation notice will be posted on SAM.gov on November 4, 2026, by close of business.