UNSPSC 77101900: Pollution investigation services

UNSPSC 77101900 Pollution investigation services, a Class code, encompasses environmental site assessment, contamination analysis, and related investigative work that state and local governments procure to evaluate property conditions, identify responsible parties for environmental liability, and support remediation planning. The recent solicitation activity shows state and local agencies buying chain-of-title and potentially responsible party searches with formal reporting, laboratory analysis of environmental contaminants in biological and water samples, and field sampling services to support emerging environmental research mandates and policy development. Issuing bodies include state environmental agencies—notably California's Department of Toxic Substances Control and Office of Environmental Health Hazard Assessment—along with county parks departments and municipal governments undertaking environmental assessments of specific properties. The California agencies appear as repeat buyers under this code, with DTSC and OEHHA each posting multiple recent opportunities for specialized investigation and analytical services.

Recent activity concentrates in California, where three of five decision-relevant opportunities originated. The California Department of Toxic Substances Control issued RFP# 2627-07 in July 2026 for potentially responsible party searches and chain-of-title search reports, with proposals due August 13, 2026, under an estimated contract value not to exceed $950,000 over two years; DTSC anticipates annually requesting approximately 20 PRP search reports and 20 title search reports. The OEHHA issued IFB 25-E0033 in May 2026 for laboratory analysis of polycyclic aromatic hydrocarbons and cotinine in urine samples supporting the CHAIRS-LA refinery-health study, with bids due June 11, 2026 and a total contract value not to exceed $176,000 through March 31, 2028. OEHHA also issued IFB 25-E0032 in May 2026 for water sampling services and microplastics characterization under Senate Bill 1147, with bids due May 29, 2026 and a budget not to exceed $49,999. Beyond California, the Town of Stonington, Connecticut issued RFP 2026-003ston in May 2026 for environmental assessment of the Campbell Grain Property, with proposals due June 23, 2026. Colorado's Boulder County Parks and Open Space issued a non-binding Request for Information in May 2026 to evaluate whether herbicides contain PFAS or PFOS, though this RFI explicitly does not commit the county to any future contract award.