Laws & Regulations
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Support Documents for the Phase III Cooling Water Intake Rule (2006)
Documents supporting the final Phase III rule for cooling water intakes (2006).
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Support Documents for the Phase II Cooling Water Intake Rule (2004; withdrawn)
Documents supporting the Phase II cooling water intake rule (subsequently withdrawn)
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Final Extension of Start Date for Revised Photochemical Assessment Monitoring Stations
Extension of Start Date for Revised Photochemical Assessment Monitoring Stations
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Procedures for Processing Requests to Redesignate Areas to Attainment
Guidance for processing requests for redesignation of nonattainment areas to attainment for ozone (O3), carbon monoxide (CO), particulate matter (PM-10), sulfur dioxide (SO2), nitrogen dioxide (NO2), and lead (Pb).
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Reasonable Further Progress, Attainment Demonstration, and Related Requirements for Ozone Nonattainment Areas Meeting the Ozone National Ambient Air Quality Standard
EPA interprets certain CAA provisions so as not to require areas meeting the ozone standard to make the SIP submissions to EPA described in the provisions as long as the areas continue to meet the standard, and has a process for determining that attainment
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Streamlining the SIP Process
EPA collaborated with the The National Association of Clean Air Agencies (NACAA/ECOs) SIP Reform Work Group to minimize federal and state burden in developing SIPs, but ensure the plans effectiveness in complying with the Clean Air Act.
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Cycle of Standards, Designations, and Implementation for Ozone
This introduction to the process provides the context for then developing a state implementation plan.
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Clean Air Act Section 176A Petition from Maine
Response to August 27, 2018, Clean Air Act Section 176A Petition From Maine
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Implementation of the 2015 National Ambient Air Quality Standards (NAAQS) for Ozone: Final Nonattainment Area Classifications Approach
Fact sheet and final rule information related to the ozone nonattainment area classifications approach
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Fact Sheet - Managing Ozone Air Quality: Actions on 1997 Ozone NAAQS State Implementation Plans
This fact sheet provides a basic overview of the May 8, 2009 notices that disapproved of seven states ozone nonattainment areas in regions 1 thorugh 4.
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Maximum Clean Air Act (CAA) Timeframe Associated With Each SIP Element (From Effective Date of Designation)
Unofficial timetable: consult federal regulations and notices for comprehensive information.
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Implementation of the 2008 National Ambient Air Quality Standards (NAAQS) for Ozone: State Implementation Plan (SIP) Requirements
Learn about the state implementation requirements of the 2008 NAAQS
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2020 Order Denying a Petition to Object to the Title V Operating Permit for Hazlehurst
This document is part of the Title V Petition Database.
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Industrial Laundries Wastewater Discharges
Federal Register notices and support document related to wastewater discharges from industrial laundries
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Alternate Test Procedures
Explanation of Alternate Test Procedure program and method flexibility procedures for Clean Water Act analytical methods (40 CFR Part 136).
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New Mexico SIP: Bernalillo County Part 41: Authority to Construct, SIP effective July 31, 2017 (NMd73)
New Mexico SIP: Bernalillo County Part 41
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New Mexico SIP: Bernalillo County Part 41: Authority to Construct, SIP effective July 31, 2017 (NMd73) to present.
New Mexico SIP: Bernalillo County Part 41
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New Mexico SIP: NM except Bernalillo County Part 3: Ambient Air Quality Standards, SIP effective August 15, 2011 (NMd33) and October 18, 2019 (NMd80)
New Mexico SIP: NM except Bernalillo County Part 3: Ambient Air Quality Standards