This is an unrestricted solicitation for commercial testing services (NAICS 541380) for the EPA Region 7 office, with performance required in Kansas City, KS 66101. The procurement will be conducted as a competitive reverse auction via Unison Marketplace, where sellers submit descending price bids. All pricing must be submitted through the online exchange, and registration is free. The solicitation is open for bidding until the specified closing time on the Marketplace platform. No budget amount is specified in the description.