UNSPSC 71122307: Subsea dredging trenching and excavation services

Services to dig and remove material in waterways

UNSPSC 71122307 Subsea dredging trenching and excavation services is a Commodity code that in recent state and local procurement activity does not align with the subsea or marine excavation implied by its name. Instead, the opportunities tagged to this code predominantly involve well drilling, plugging, and abandonment services—orphan oil and gas well remediation, water well construction and replacement, monitoring well installation, and related subsurface infrastructure work. The scope spans drilling and installing new wells for municipal water supply, plugging and abandoning orphaned or unproductive wells in compliance with state and federal regulations (often under the Infrastructure Investment and Jobs Act Orphan Well Program), and performing ancillary services such as well casing repair, video surveys, site restoration, and pump system installation. State and local buyers include water utilities (cities and counties), state environmental and energy departments (Michigan EGLE, Mississippi Oil and Gas Board), special districts, and state parks and recreation departments. Repeat issuing bodies include the Michigan Department of Environment, Great Lakes, and Energy (multiple orphan well plugging direct solicitations in Gratiot and Montcalm Counties), the Mississippi Oil and Gas Board (orphan well plugging for nine and ten wells respectively in Adams, Walthall, and Jones Counties), and multiple Florida counties and municipalities (Escambia, Sarasota, Seminole, Hillsborough, Broward) contracting for well maintenance, repair, and ancillary services.

Recent geographic activity concentrates in Michigan, Mississippi, Florida, Georgia, and Texas. Representative recent opportunities include the Mississippi Oil and Gas Board's IFB for plugging nine orphaned wells in Jasper and Jones Counties with bids due December 18, 2026; the Michigan Department of Environment, Great Lakes, and Energy's direct solicitation (prequalified vendors only) for the Gilbert Orphan Well Plugging project in Kent County with proposals due October 12, 2026; the City of Albany, Georgia's sealed-bid request for Well No. 21 rehabilitation with responses due November 16, 2026; Escambia County Waste Services Department's ITQ for installation of three monitoring wells at Klondike Landfill in Pensacola (deadline passed, September 16, 2026); and Hillsborough County's ITB for water well maintenance and repair services covering 67 wells across county parks. Federally funded projects—particularly those under the Infrastructure Investment and Jobs Act and State Revolving Fund programs—dominate the pipeline, triggering Davis-Bacon prevailing wage compliance, Build America Buy America requirements, and dedicated prequalification vendor pools in states like Michigan. Orphan well programs remain active and visible, with multiple concurrent solicitations from state environmental agencies and oil-and-gas boards across the South and Midwest. The mismatch between the code's nominal "subsea" scope and the actual well-drilling and abandonment work being bought suggests this code receives applied-code assignment from procurement offices despite its abstract name.