EPA Letter to Navajo Nation on Colorado UIC Class VI Program

The Environmental Protection Agency (EPA) has issued a letter to the Navajo Nation concerning its Underground Injection Control (UIC) Class VI program, which is designed for the geologic sequestration of carbon dioxide. This notice serves to communicate the EPA's position and provide clarification on specific elements of the Navajo Nation's program, likely related to permitting or operational standards for Class VI wells.

While this document is a notice and not a rule, entities involved in or overseeing Class VI programs, particularly tribal nations or those interacting with them, should review the letter for any implications regarding program administration, compliance expectations, or potential future guidance. The specific details within the letter may inform operational practices and compliance strategies for carbon sequestration projects.