The US Geological Survey requires a contractor to operate a NADP/NTN wet atmospheric monitoring station, involving weekly site visits for sample collection, data transmission, and equipment maintenance. Performance of services will be at the designated monitoring station location. All vendors must be registered in the System for Award Management to submit electronic quotes. Questions are due by 1:00 PM EST on June 12, 2026. Quotation packages are due by 1:00 PM EST on June 19, 2026.