Laws & Regulations
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R9UIC-CA1-FY20-3R: Union Sugar No. 13, Santa Maria, CA
Documents relating to UIC Permit #CA10910004 - Union Sugar No. 13, Santa Maria, California
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R9UIC-HI5-FY16-1R: Puna Geothermal Venture, Pahoa, Hawaii
Class V Geothermal Injection Permit No. R9UIC-HI5-FY16-1R provides authorization to operate four Class V geothermal injection wells known as Kapoho State 1A, 3, 11 and 13 for Puna Geothermal Venture, 14-3860 Kapoho-Pahoa Road, Pahoa, Hawaii 96778.
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Florence Copper Project, Florence, AZ
Arizona received UIC Primacy on October 15, 2025. EPA transferred all AZ UIC inventory (except for inventory on Indian lands) and permits to ADEQ.
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UIC-09-2018-0001: Uilani Associates Inc, Kamuela, HI; Consent Agreement and Final Order
Consent Agreement and Final Order ("CAFO") between the U.S. Environmental Protection Agency, Region 9 (“EPA”) and Uilani Associates Inc. Docket No. UIC-09-2017-0001.
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New Jersey Impaired Waters List
The documents detail the New Jersey impaired waters list.
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U.S. Virgin Islands Impaired Waters List
The documents detail the U.S. Virgin Islands' impaired waters list.
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Puerto Rico Impaired Waters List
The documents detail the Puerto Rico impaired waters list.
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CWA-309(a)-22-002: Imperial Irrigation District, Imperial, CA; Administrative Order on Consent
Administrative Order on Consent in the Matter of Imperial Irrigation District, Imperial, California. EPA Docket Number CWA-309(a)-22-002.
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Air Standards Delegations in EPA’s Pacific Southwest (Region 9)
Federal air regulations that have been delegated to state or local air pollution control agencies in Region 9
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Emergency Fuel Waivers
Temporary waivers due to emergency situations when the fuel supply suffers major disruption.
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Small Entity Compliance Guides
List of Small Entity Compliance Guides available to aid the user in complying with an associated rule
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Certificate of Registration for the National Vehicle and Fuel Emissions Laboratory (NVFEL) for Conformance to International Organization for Standardization (ISO) 14001:2015 Standards
This certificate recognizes that the EPA NVFEL has been assessed by NSF-ISR and found to be in conformance to ISO 14001:2004 Standards.
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Manufacturer-Run In-Use Testing Program Data for Heavy-Duty Diesel Engines – Test Order Year 2016
This page provides manufacturer-run in-use testing program data from heavy-duty diesel engine manufacturers in compliance with 40 CFR 86 Subpart T for Test Year 2016.
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Manufacturer-Run In-Use Testing Program Data for Heavy-Duty Diesel Engines – Test Order Year 2017
This page provides manufacturer-run in-use testing program data from heavy-duty diesel engine manufacturers in compliance with 40 CFR 86 Subpart T for Test Year 2017.
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Regulations for Emissions from Marine Spark-Ignition Engines
EPA standards for exhaust and evaporative emissions reduce the environmental impact from marine spark-ignition engines and vessels.
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Light-duty Vehicle Greenhouse Gas Program Technical Amendments
EPA finalizes two technical corrections to the Light-duty Vehicle Greenhouse Gas (GHG) Emissions Standards Regulations.
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Heavy-Duty Highway Powertrain Family Naming Conventions
This page provides the engine family naming convention for heavy-duty powertrain families.
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Reporting Templates for Light-Duty Greenhouse Gas (GHG) Standards
Manufacturers must submit greenhouse gas certification and reporting data through EV-CIS, formerly Verify, EPA’s engine and vehicle compliance information system.
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EPA’s Marine Remanufacturing Program: Maintaining Compliance when Rebuilding Category 1 and 2 Marine Diesel Engines
EPA maintains a list of remanufacture systems, or “kits”, certified for use with Category 1 and 2 marine diesel engines according to the provisions of 40 CFR Part 1042, Subpart I, and is periodically updated.
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Heavy-Duty Highway Tractors and Vocational Vehicles: Family Naming Conventions
How to create Positions 5-12 of your Engine Family name for Complete Heavy-Duty Highway Vehicles (tractors and vocational vehicles >14,000 pounds GVWR).