Environmental Protection Agency
The U.S. Environmental Protection Agency (EPA or Agency) has received a complete Underground Injection Control (UIC) primacy application from the State of Arizona requesting primary enforcement responsibility (primacy) for Class I-VI injection wells under the Safe Drinking Water Act (SDWA) section 1422. The EPA's approval of the State's UIC program primacy application would allow the Arizona Department of Environmental Quality (ADEQ) to authorize underground injection for all underground injection wells regulated under the Federal SDWA and ensure compliance with UIC program requirements. The EPA proposes to issue a final rule approving Arizona's application to implement the UIC program for Class I-VI injection wells located within the State, except those on Indian lands. The EPA proposes amendments to reflect this proposed approval of Arizona's UIC program primacy application.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Environmental Protection Agency 40 CFR Part 147 [EPA-HQ-OW-2025-0087; FRL 11786-01-OW] AGENCY: Environmental Protection Agency (EPA). ACTION: Proposed rule. SUMMARY: The U.S. Environmental Protection Agency (EPA or Agency) has received a complete Underground Injection Control (UIC) primacy application from the State of Arizona requesting primary enforcement responsibility (primacy) for Class I-VI injection wells under the Safe Drinking Water Act (SDWA) section 1422. The EPA's approval of the State's UIC program primacy application would allow the Arizona Department of Environmental Quality (ADEQ) to authorize underground injection for all underground injection wells regulated under the Federal SDWA and ensure compliance with UIC program requirements. The EPA proposes to issue a final rule approving Arizona's application to implement the UIC program for Class I-VI injection wells located within the State, except those on Indian lands. The EPA proposes amendments to reflect this proposed approval of Arizona's UIC program primacy application. DATES: Comments must be received on or before July 3, 2025. Public hearing: The EPA will hold one virtual public hearing during the comment period. Please refer to the SUPPLEMENTARY INFORMATION section for additional information on the public hearing. ADDRESSES: You may send comments, identified by Docket ID No. EPA-HQ-OW-2025-0087 by any of the following methods: Federal eRulemaking Portal: https://www.regulations.gov/​ (our preferre…
Other Federal Register documents from the same docket.
Citation: 90 FR 21264
