The US Geological Survey (USGS) is seeking qualified businesses to provide chemical analyses of soil and plant samples under a sources sought notice for market research purposes. This is not a request for proposals, and no contract award will result from this announcement. The applicable NAICS code is 541380 (Testing Laboratory) with a $16.5 million size standard. Responses must be submitted electronically to yangzhi_deng@ios.doi.gov by 07/01/2026 at 12:00 PM PST. No budget amount or performance location is specified in the description.