Laws & Regulations
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Memorandum of Understanding between the U.S. Environmental Protection Agency and the U.S. Department of War
This page contains a memorandum of understanding regarding support for implementation of fast track cleanup at closing Department of Defense (DoD) installations.
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Proposed Consent Decree to Complete the Anti-backsliding Study for Renewable Fuel Volumes
EPA has announced a proposed consent decree that would require EPA to complete the “anti-backsliding study” for Renewable Fuel Volumes
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Notice of Willingness to Participate in Funding Opportunities of Other Federal Agencies
OTAQ’s Participation Policy allowing researchers to collaborate with other federal and non-federal non-profit institutions; background, responsibilities, approval process, ethical and procedural guidelines are included. (EPA publication # EPA-420-F-20-011)
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Final Rule for Amendments Related to Global Marine Fuel
This page is about final rule for amendments related to global marine fuel meeting the MARPOL Annex VI 5,000 parts per million (ppm) sulfur standard.
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Regulations for Emissions from Heavy Equipment with Spark-Ignition Engines
EPA regulations related to smog, soot, and other air pollution from heavy equipment.
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Regulations for Emissions from Recreational Vehicles
Information about land-based recreational vehicles, such as snowmobiles, off-highway motorcycles (dirt bikes), all-terrain vehicles (ATVs), and personal boats and watercraft.
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Proposed Rule for Emission Standards for Locomotives and Locomotive Engines
This is the Proposed Rule for Emission Standards for Locomotives and Locomotive Engines.
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Proposed Rule for Control of Hazardous Air Pollutants From Mobile Sources: Early Credit Technology Requirement Revision
The proposed rule for the Control of Hazardous Air Pollutants From Mobile Sources: Early Credit Technology Requirement Revision.
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Proposed Rule for Fuel Economy Labeling of Motor Vehicles: Revisions To Improve Calculation of Fuel Economy Estimates
Link to Federal Register notice and Final Rule.
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Proposed Rule and Related Materials for Heavy-Duty Engine and Vehicle, and Nonroad Technical Amendments
EPA is proposing to amend provisions in the Medium- and HeavyDuty Greenhouse Gas Emissions and Fuel Efficiency final rule issued on September 15, 2011.
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Proposed Rule for Fuel Economy Regulations for Automobiles: Technical Amendments and Corrections
Proposed amendments and corrections to 40 CFR Parts 86 and 600. November 25, 2009.
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Proposed Rule and Related Materials for Revised Carbon Monoxide (CO) Standard for Class I and II Nonhandheld New Nonroad Phase 1 Small Spark-Ignition Engines
Information for the proposed rule and related materials for Revised Carbon Monoxide (CO) Standard for Class I and II Nonhandheld New Nonroad Phase 1 Small Spark-Ignition Engines.
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Proposed Rule and Related Materials for Control of Emissions of Air Pollution From Nonroad Diesel Engines Control of Air Pollution From Aircraft and Aircraft Engines; Proposed Emission Standards and Test Procedures
EPA is proposing to adopt emission standards and related provisions for aircraft gas turbine engines with rated thrusts greater than 26.7 kilonewtons. These engines are used primarily on commercial passenger and freight aircraft.
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Final Rulemaking for Grain Sorghum Oil Pathways
Learn more about final rulemaking for grain sorghum oil pathways.
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Notice of Proposed Rulemaking for Grain Sorghum Oil Pathways
Periodic Reviews of the Renewable Fuel Standard Program
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Volkswagen Light Duty Diesel Vehicle Violations for Model Years 2009-2016
This site provides information 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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Gasoline Standards
Information about EPA's gasoline regulations, including the Tier 3 Gasoline Sulfur program, the Mobile Source Air Toxics rule, Reformulated Gasoline (RFG) regulations, and volatility requirements.
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EPA Comments on the Gasoline Additive MMT
EPA Comments on the Gasoline Additive Methylcyclopentadienyl manganese tricarbonyl (MMT)
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NPDES Permit for Maher Cattle Company in South Dakota
Under NPDES permit SD-0034606, the Wulf Cattle Depot is authorized to discharge and must operate their facility in accordance with effluent limitations, monitoring requirements, and other provisions set forth herein.
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HPI Products Inc. Facilities, St. Joseph, Buchanan County, Missouri – Fact Sheet, June 2022
Public Comment Period - Request for Community Concerns