Laws & Regulations
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Comments on Proposed Amendments to Chapter 106, 116 for Maintenance, Startup and Shutdown (MSS) Chapter 106, Subchapter K
This document is part of the NSR Policy and Guidance Database
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Dec. 19, 1980 Ambient Air Letter
This document is part of the NSR Policy and Guidance Database
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Applicability of NSR Requirements to the Henkel Corporation
This document is part of the Title V Policy and Guidance Database.
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Applicability of EPA's PSD Regulations to Floating Seafood Processors
This document is part of the Title V Policy and Guidance Database.
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Accounting for Emergency Generators in the Estimate of Potential to Emit
This document is part of the Title V Policy and Guidance Database.
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American Soda.. Multi-facility Source Determination
This document is part of the Title V Policy and Guidance Database.
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Clean and Safe Water in Indian Country
Learn about EPA tribal water programs and the tools, training, funding, and other resources available for tribal environmental offices.
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Final Rule: Additional Revised Air Quality Designations for the 2015 Ozone National Ambient Air Quality Standards: El Paso County, Texas and Weld County, Colorado
final action on remanded 2015 ozone designations
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Error Corrections: Air Quality Designations for the 2015 Ozone National Ambient Air Quality Standards
Error correction for 2015 ozone standards designations.
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2008 Lead Standards - State Recommendations and EPA Responses
Lead Designations - 2008 Standards - State Recommendations and EPA Responses
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EPA Guidance on the Area Designations for the 2015 Ozone NAAQS
States and Tribes should refer to the following guidance for area designations for the 2015 Ozone NAAQS when preparing their recommendations on area designations.
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CAA Permit Public Comment Opportunities in Region 8
EPA-issued CAA permits available for public comment in Region 8, serving Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming, and 27 Tribal Nations.
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El Segundo Mine - Final NPDES Permit No. NM0030996 and Finding of No Significant Impact
El Segundo Mine - Final NPDES Permit No. NM0030996
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Casa Blanca WWTP - NPDES Permit No. NM0030678
Casa Blanca WWTP NPDES Final Permit NM0030678 for NPDES webpage
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Technical Compliance Rate Performance Measures
OUSTs update to existing compliance performance measures and add new measures
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Two Red Hill Fuels Department Employees Indicted for False Statement to Hawaii Department of Health Regarding May 6, 2021 Jet Fuel Spill
Two Red Hill Fuels Department Employees Indicted for False Statement to Hawaii Department of Health Regarding May 6, 2021 Jet Fuel Spill
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New: EPA OIG Hotline Information
The EPA OIG Hotline receives complaints of fraud, waste, and abuse in EPA programs and operations including mismanagement or violations of law, rules, or regulations by EPA employees or program participants.
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Nonattainment Areas for Criteria Pollutants (Green Book)
Areas of the country where air pollution levels persistently exceed the national ambient air quality standards may be designated "nonattainment." This site provides current information on nonattainment areas by state and pollutant.
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NPDES General Permit for Offshore Seafood Processors in Alaska
NPDES general permit and supporting documents for offshore seafood processors in Alaska.
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UIC Permit for Redoubt and West McArthur River Units, Cook Inlet, Alaska
EPA Underground Injection Control permit for the Redoubt Unit and West McArthur Unit, Cook Inlet, Alaska.