The United States Geological Survey (USGS) intends to award a sole source contract to Activation Laboratories, Ltd. (ACT Labs) for geochemical rock sample analysis, specifically targeting sulfide and silicate samples, sediments, soils, waters, and solid media leached samples. This procurement is essential for maintaining consistency in data analysis across various environmental and metallogenic projects, as ACT Labs is uniquely qualified to provide results that align with historical data spanning over 20 years. Interested vendors must be registered at SAM.gov and can submit their capabilities to Susan Ruggles via email by March 27, 2025, although this notice serves informational purposes only and is not a request for competitive quotations.