The National Park Service, Southeast Region, awarded a purchase order to San Antonio River Authority for water quality sampling and analysis services at San Antonio Missions National Historical Park on September 16, 2026, with a ceiling value of $68,360.70. The order is firm fixed-price with no small business set-aside. Work is performed in Homestead, Florida, and carries an ultimate completion date of September 15, 2031. The procurement was issued as a sole-source award under FAR 6.302-1; SARA has provided continuous water quality monitoring at the site since 2008 and serves as the designated local authority for the Upper San Antonio River under the Texas Clean Rivers Program. The National Park Service determined that consolidating this work with SARA's routine watershed monitoring reduces duplication and project costs.