All commercial disposal wells in Wyoming are regulated by the UIC Program as Class I injection wells. Class I wells inject industrial, municipal and hazardous wastes below the deepest Underground Source of Drinking Water (USDW). Currently, all permitted Class I wells are for the injection of non-hazardous waste. WQRR Chapter 27 governs the installation and operation of Class I wells. You may download the current version from the Secretary of State's Office website.
The Class I Well Application form and instructions.
Draft UIC Permits currently in public comment period.
Minnelusa Aquifer Exemption
The US EPA granted the State of Wyoming a formal aquifer exemption for the Minnelusa Formation located in the central part of the Powder River Basin, described in the aquifer exemption approval letter. Class I wells injecting into this portion of the Minnelusa Formation do not require a separate aquifer exemption.
If you are interested in submitting a Trade Secret Confidentiality Request, click here.