The USGS intends to award a non-competitive, firm fixed-price purchase order to In-Situ Inc. for equipment repair, maintenance, calibration services, and repair parts. Performance will be in Tuscaloosa, Alabama, for one year from award with two option years. The sole-source justification is that In-Situ is the proprietary manufacturer and only authorized source capable of providing these services. The anticipated award date is September 20, 2026. Interested responsible sources may submit a quotation for consideration, but this notice is informational only.