Permit requirements can be found in 40 CFR parts 124, 144 and 146. Federal permits are required for all Class I, II, and III wells, and some Class V wells. For a permit application or related information, please call EPA Region 9 contacts or see the UIC Reporting Forms site. Region 9 states that have delegated programs have permit requirements that vary by jurisdiction and well type. Injection well owners are responsible for determining all applicable requirements.

Additional UIC information can be found at EPA's UIC Web site. For general questions, call the Safe Drinking Water Act Hotline at (800) 426-4791.

Community Involvement and Environmental Justice

EPA is supporting national Environmental Justice (EJ) goals by inviting communities to provide input during the permit application review process. To support early engagement between permittees and overburdened communities, EPA's Region 9 office has developed an Environmental Justice and Permitting Implementation Plan which the region follows in processing applications for EPA-issued UIC permits. In addition, EPA has developed a community engagement guide for potential permitees, entitled Promising Practices for Permit Applicants Seeking EPA-Issued Permits: Ways to Engage Neighboring Communities. Exit

Open Comment Period

• No permits are currently open for public comment

Closed Comment Period

• Pacific Gas and Electric Company (PG&E) Compressed Air Energy Storage (CAES) Injection/Withdrawal (I/W) Test Well - Draft UIC Permit
• Class V Experimental UIC Permit City of Los Angeles
• Draft UIC Permit: Lahaina Wastewater Reclamation Facility - County of Maui, Hawaii
  • Lahaina Wastewater Reclamation Facility Groundwater Tracer Study
• Final Rule Making for Class II Underground Injection Control - Navajo Nation

Final UIC Permits

Class I

• Newhall Land and Farming Company, Inc.
• El Centro Generating Station - Imperial Irrigation District - (Signed July 12, 2010, Minor Modification signed August 21, 2012)
• S.M.S. Briners, Inc.
• California Specialty Cheeses
• Hilmar Cheese Final Permit - (Signed January 9, 2006; Minor Modification signed May 22, 2008; Minor Modification No. 2 signed July 7, 2011)
• La Paloma Generating Co.
• Panoche Energy Center
• Northern California Power Agency - (Permit signed October 16, 2009, Minor Modification signed April 20, 2011, Minor Modification signed May 20, 2013)
• County of Santa Barbara - Laguna County Sanitation District

Class III

• Morton Salt, Inc.
• Florence Copper, Inc. (FCI) Production Test Facility

Class V

• Puna Geothermal Venture, Hawaii
• Arizona Public Services UIC Class V Experimental Permit for Carbon Sequestration
• City of Los Angeles Class V Experimental Permit (Biosolids Injection)

Draft Permit - Application Withdrawn

• Class V Experimental Injection Wells: C6 Resources, LLC

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