CA76 - USGS Precipitation Sample Collection at NADP

The US Geological Survey (USGS) Office of Acquisitions and Grants has published a Special Notice regarding a sole source contract award for precipitation sample collection at the National Atmospheric Deposition Program (NADP) CA76 monitoring station in Yreka, California. The notice, posted on April 27, 2026, announces the USGS's intention to award contract 140G0126Q0102 exclusively to Siskiyou County Air Pollution Control District. This determination is based on the district's ownership of the property and equipment at the monitoring site, combined with their restrictive policies prohibiting third-party vendor access to the facility and associated resources. The USGS has invited any vendor who believes they can provide equivalent services to submit objections by the deadline.

The contract requires the selected contractor to conduct weekly site visits for precipitation sample collection, processing, and shipment, as well as data collection and transmission including precipitation gage records and routine instrument maintenance. Interested vendors must contact Contracting Officer Brian Baker at brian_baker@ios.doi.gov no later than 1:00 PM EDT on Friday, May 1, 2026, to challenge the sole source justification. The primary purpose of this contract is to support the interagency National Atmospheric Deposition Program, National Trends Network (NADP-NTN), which monitors wet atmospheric deposition across the United States. The classified work falls under NAICS 541990 (All Other Professional, Scientific, and Technical Services) and PSC R702 (Support-Management: Data Collection), with a final response deadline of May 8, 2026.