NOAA intends to award a sole source purchase order to South Dakota State University (SDSU) for atmospheric chemistry research, to be performed in Brookings, South Dakota. SDSU is the only vendor capable of providing the required specialized expertise with proprietary RAVE and GBBEPX codebase algorithms, which they developed and maintained for over a decade. The period of performance is September 1, 2026, through August 31, 2027. No budget amount is specified. This is not a request for competitive proposals, but interested firms may submit substantiating documentation to the point of contact within 15 days of this notice.