Laws & Regulations
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Summary of Vancouver Carbon Monoxide (CO) Attainment and Maintenance Plans
Summary of the Vancouver carbon monoxide attainment and maintenance plans under the Washington air quality SIP.
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Summary of Seattle-Tacoma Puget Sound Area Ozone Maintenance Plan
Summary of the Seattle-Tacoma Puget Sound Area ozone maintenance plan under the Washington air quality SIP.
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Control of HFC-23 Emissions
Proposed Rulemaking: Phasedown of Hydrofluorocarbons: Allowance Allocation Methodology for 2024 and Later Years.
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Overview of the Petition Process
Overview of the Petitions Process under the AIM Act
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Administrative Consequences Under the HFC Allocation Rule
This page illustrates administrative consequences for activities including, but not limited to, submitting false, inaccurate, or misleading information, as well as importing HFCs, without expending the requisite that have been issued as of March 31, 2022.
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Getting Started with Lead Service Line Identification and Replacement
Information for water systems on how to begin planning for lead service line replacement, including links to important regulatory information.
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Management of Certain Hydrofluorocarbons and Substitutes under Subsection (h) of the American Innovation and Manufacturing Act
Information about Subsection (h) under the AIM Act
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Resources for HFC Allowance Allocation and Reporting
The text of the AIM Act
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National Service Center for Environmental Publications
NSCEP is EPA's repository of digital and print EPA publications. You can search and retrieve, download, print and/or order EPA technical, scientific, or educational materials - free of charge.
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Final Renewable Fuel Standards for 2019, and the Biomass-Based Diesel Volume for 2020
Learn more about final rulemaking for Volume Standards for 2019, and the Biomass-Based Diesel Volume for 2020
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Learn About SmartWay Verified Aerodynamic Devices
Installing EPA-verified aerodynamic technologies on your trailer can help fleet and truck owners save fuel. Options include gap reducers, skirts, or tails and can be installed individually or in combination.
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Documents Related to Volkswagen Violations for Model Years 2009-2016
Related documents on EPA's issued notice of violation (NOV) of the Clean Air Act (CAA) to Volkswagen. The NOV alleges software that circumvents EPA emissions standards for certain air pollutants.
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Proposed Rule and Related Materials for Nonconformance Penalties for On-Highway Heavy-Duty Diesel Engines
Includes links to Federal Register notice, final rule and additional resources.
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Regulations for Emissions from Small Equipment & Tools
EPA regulations related to smog, soot, and other air pollution from small equipment and tools.
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Reporting Resources for the Emissions Reduction & Reclamation Rule
Reporting resources for entities subject to leak repair, reclamation, and/or fire suppression reporting under the Emissions Reduction and Reclamation (ER&R) final rule.
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Learn About FCA Violations
Learn about EPA's issued notice of violation (NOV) of the Clean Air Act (CAA) to Fiat Chrysler Automobiles N.V. and FCA US LLC. The NOV alleges that FCA installed software that circumvents EPA emissions standards for certain air pollutants.
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Carbon Pollution from Transportation
Learn about the effects of carbon pollution from transportation.
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Tier 3 Certification Fuel Impacts Test Program
EPA’s study comparing CO2 emissions and fuel economy performance of Tier 2 and Tier 3 certification test gasolines.
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Operating Permit Timeline for Louisiana
Part 70 Title V Operating Permit Timeline for Louisiana
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Petition Status for Technology Transitions
Information on Technology Transition Petitions under the AIM Act - how to submit petitions, and information and status on petitions that EPA has received.