Laws & Regulations
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Findings of Failure to Submit State Implementation Plans Required for Attainment of the 2010 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard - October 2020
Notice and summary fact sheet on October 2020 findings of failure to submit for the SO2 NAAQS applying to four areas in Louisiana, GUam and PUerto Rico
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EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the North Carolina SIP
EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the North Carolina SIP as of 10/01/23
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Chicago Heights/Missouri Metals Facility, St. Louis, St. Louis County, Missouri – Fact Sheet, July 2022
Public Comment Period for Proposed Remedy and Public Availability Session
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Polychlorinated Biphenyl (PCB)-Containing Fluorescent Light Ballasts (FLBs) in School Buildings
PCB-Containing Fluorescent Light Ballasts (FLBs) in School Buildings
A Guide for School Administrators, Building Owners and Managers and Maintenance Personnel -
Reallotment of Fiscal Year 2022 (2nd Round) and Fiscal Year 2023 CWSRF IUA EC Memo
Reallotment of Fiscal Year 2022 (2nd Round) and Fiscal Year 2023 Infrastructure Investment and Jobs Act Clean Water State Revolving Fund Emerging Contaminants Funds
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Outer Continental Shelf Air Permits
Provides information and links to EPA's Outer Continental Shelf air permitting requirements.
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Final Rule for Phase 2 Emission Standards for New Nonroad Spark-Ignition Nonhandheld Engines At or Below 19 Kilowatts
Emission regulations to control emissions from new nonroad spark-ignition nonhandheld engines at or below 19 kilowatts (25 horsepower). These engines are used principally in lawn and garden equipment in applications such as lawnmowers and garden tractors.
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Final Rule for Control of Air Pollution From New Motor Vehicles and New Motor Vehicle Engines: Voluntary Standards for Light-Duty Vehicles
The National LEV program demonstrates how cooperative, partnership efforts can produce a smarter, cheaper program that reduces regulatory burden while increasing protection of the environment and public health.
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Final Rule for Control of Air Pollution From Motor Vehicles and New Motor Vehicle Engines; Increase of the Vehicle Mass for 3-Wheeled Motorcycles
This action changes the regulatory definition of a motorcycle to include 3-wheeled vehicles weighing up to 1749 pounds effective for 1998 and later model year motorcycles for which emission standards are in place.
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Final Rule for Amendment to Emission Requirements Applicable to New Gasoline Spark-Ignition Marine Engines
This rulemaking amends the regulations applicable to new gasoline spark-ignition marine engines to address an oversight regarding the production line testing program in the final regulations published on October 4, 1996, (61 FR 52087).
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Final Rule for Control of Emissions From Nonroad Large Spark-Ignition Engines, and Recreational Engines (Marine and Land-Based)
Includes rule summary, rule history, CFR citations and links to Federal Register notice, summary of comments, final regulatory support document, proposed rule, fact sheet and FAQs.
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Final Rule for Phase 1 Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles
EPA and NHTSA, on behalf of the Department of Transportation, have each finalized rules to establish a comprehensive Heavy-Duty National Program that will reduce greenhouse gas emissions and fuel consumption for heavy-duty highway vehicles.
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Proposed Rule and Related Materials for Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles
EPA and NHTSA, on behalf of the Department of Transportation, each proposed rules to establish a comprehensive Heavy-Duty National Program to reduce greenhouse gas emissions and increase fuel efficiency for onroad heavy-duty vehicles.
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Final Rule for Determination of Significance for Nonroad Sources and Emission Standards for New Nonroad Compression-Ignition Engine at or Above 37 Kilowatts
EPA finalized the determination of significance of emissions from large, nonroad, compression-ignition (CI) engines at or above 37 kilowatts (kW) in power
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Final Rule for Control of Emissions of Air Pollution From Nonroad Diesel Engines and Fuel
Proposed Rule for Control of Emissions of Air Pollution From Nonroad Diesel Engines and Fuel
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Proposed Rule and Related Materials for Control of Emissions of Air Pollution from 2004 and Later Model Year Heavy-Duty Highway Engines and Vehicles; Revision of Light-duty Truck Definition
Includes links to Federal Register notice, fact sheet and final rule.
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Final Rule for Control of Emissions of Air Pollution from 2004 and Later Model Year Heavy-Duty Highway Engines and Vehicles; Revision of Light-Duty On-Board Diagnostics Requirements
Final Rule for Control of Emissions of Air Pollution from 2004 and Later Model Year Heavy-Duty Highway Engines and Vehicles; Revision of Light-Duty On-Board Diagnostics Requirements
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EPA Analysis of Decision in Barrick Goldstrike Mines, Inc. v. Whitman
Summary of a 2003 court decision related to TRI reporting requirements for metal mining operations.
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Qs & As Analyzing the Decision in Barrick Goldstrike Mines, Inc. v. Whitman
Answers to common questions related to a 2003 court decision involving TRI reporting requirements for metal mining operations.
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Proposed Rule and Related Materials for Non-Conformance Penalties for 2004 and Later Model Year Emission Standards for Heavy-Duty Diesel Engines and Heavy-Duty Diesel Vehicles
Includes links to Federal Register notice, fact sheet, technical support document and final rule.