GA99 site operator-USGS national trends network

The U.S. Geological Survey (USGS) Hydrologic Network Branch is seeking a contractor to operate and maintain a water quality sampling site (GA99) as part of the National Atmospheric Deposition Program-National Trends Network. The primary service involves collecting weekly precipitation samples every Tuesday morning, maintaining precipitation collection equipment, recording gage data, and shipping samples to the USGS Upper Midwest Water Science Center for processing and analysis. Contractors must be capable of accessing the site located in Tift County, Chula, Georgia on USDA Agricultural Research Service property, with access limited to authorized University of Georgia personnel or those granted entry permission. The evaluation will be based on lowest price technically acceptable criteria, with award dependent on technical compliance and cost competitiveness. Quotes must be submitted by December 16, 2025 at 5:00 PM EST to sruggles@usgs.gov, and all vendors must be registered in the System for Award Management (SAM.gov) to be eligible for contract award.

This solicitation is designated as a total small business set-aside with a NAICS code of 541990 (All Other Professional, Scientific, and Technical Services) and a size standard of $19.5 million. The contract will be structured as a firm fixed-price agreement with a base period of one year plus four option years, with pricing required for each contract period. The government will furnish all necessary equipment including an Collector-N-Con ADS 00-120 precipitation collector ($4,200 value), a Hach OTT Pluvio2 rain gauge ($5,020 value), backup equipment, and AC power. Eligible contractors include federal, state, and local governmental agencies, universities, non-profit organizations, and private individuals with technical backgrounds. The place of performance is the GA99 site located at latitude 31.5217, longitude -83.5482 in Tift County, Georgia, with invoices required within 90 calendar days after each performance period expires.