U.S. EPA's Class VI Geologic CO2 Storage Wells in Wyoming
Carbon dioxide capture and geologic storage has not yet occurred at an industrial scale in the United States or elsewhere. However, with the potential for future geologic storage, the U.S. Environmental Protection Agency (EPA) and the Wyoming Department of Environmental Quality (DEQ), under the guidelines of the Safe Drinking Water Act’s Underground Injection Control program, have developed regulations for safely storing CO2 deep underground in geologic formations. In particular, Class VI wells have been designated as a new well class for CO2 sequestration.
The links below focus on understanding the rules, regulations, and requirements for Class VI wells, and how the new well class designation affects Wyoming.
Understanding EPA’s Carbon Sequestration Regulations, Technical Memorandum 4
The Well Catalog: Developing Tools for Class VI Well Requirements