UNSPSC 81151908: Controlled source electromagnetic method

The controlled source electromagnetic (CSEM) data service acquisition and processing, also called sea bed logging, is a mostly offshore geophysical technique, employing electromagnetic remote-sensing technology to map the electric resistivity distribution of the subsurface.

UNSPSC 81151908 Controlled source electromagnetic method is a Commodity code that does not reflect the actual work being procured under the opportunities tagged to it in state and local solicitations. Recent postings under this code include hydrogeological studies, groundwater monitoring, well services, irrigation system installation, and roofing consultant services—none of which involve controlled source electromagnetic methods as a primary scope of work. The single opportunity directly relevant to the code's nominal scope is the Texas Water Development Board's brackish groundwater production zone analysis (RFP 58027RFP0003, due August 6, 2026), which involves geophysical log documentation and subsurface mapping alongside hydrogeological expertise but does not foreground electromagnetic surveying. The remaining opportunities—Sarasota County's groundwater monitoring at Carlton Memorial Reserve, Volusia County's hydrogeological and well services, the City of DeBary's irrigation system improvements, and Broward County's roofing and waterproofing consultant services—are unrelated to the code's stated commodity definition, suggesting a systematic tagging misalignment in the database. Issuing bodies include state water agencies (Texas Water Development Board), county water utilities and environmental divisions (Sarasota, Volusia), municipalities (DeBary), and county facilities management (Broward).

Activity under this code is geographically concentrated in Texas and Florida, with one solicitation in Texas and four in Florida (Sarasota, Volusia, DeBary, and Broward counties). The Texas Water Development Board opportunity is the most substantive match, requiring professional geoscientist licensure, ten years of hydrogeology experience in the project area, and GIS subsurface mapping across fourteen counties (Atascosa through Williamson); proposals are due August 6, 2026, with contract start anticipated September 1, 2026, and the initial term running through August 31, 2027. Volusia County's hydrogeological and well services RSQ (due April 9, 2026) seeks consultant support for twenty-six production wells and nine treatment facilities, with evaluation weighted 25 percent on firm qualifications, 25 percent on experience (minimum five years required), and only 5 percent on cost, indicating a qualifications-driven procurement. Sarasota County's Carlton water quality monitoring RPS (due April 9, 2026) involves quarterly sampling of nineteen monitor wells and monthly sampling of up to four additional wells on a twelve-month cycle, with a three-year anticipated term. The mismatch between code definition and solicited work suggests this code sees minimal genuine activity in state and local procurement.