B--Sanitary Sewer System Gas Sensors

The U.S. Geological Survey is conducting a market survey under solicitation 140G0226Q0007 to identify capable firms to provide passive gas samplers and laboratory analysis for volatile organic compounds in sanitary sewer systems. The requirement focuses on the detection of six target VOCs, including trichloroethene, cis-1,2-dichloroethene, vinyl chloride, tetrachloroethene, benzene, and toluene. To ensure accuracy in high-humidity sewer environments, samplers must be compact, no larger than a 40-mL VOC vial, and designed to exclude interference from hydrogen sulfide. All analytical work must adhere to EPA Method TO-17, with specific limits of detection and quantification required for each compound. Key deliverables include the provision of samplers within 14 days of notification and the delivery of analytical results within 40 days of sample receipt. The contractor must provide tabular summaries, complete Level IV QA/QC data packages in PDF format, and isopleth contour maps of TCE concentrations. This sources-sought notice is open to various small business categories, including HUBZone, 8(a), and Service-Disabled Veteran-Owned small businesses, under NAICS code 541380. Interested firms must submit a capability statement and SAM UEI number to the Office of Acquisition Grants in Denver, Colorado, by December 31, 2025.