Laws & Regulations

SBAR Panel: Review of the Oil and Natural Gas New Source Performance Standards

small entity SBAR panel oil and gas new source performance standards

Support Documents for Fluoride Chemicals in Drinking Water Section 21 Petition

Documents supporting the Section 21 petition submitted by Fluoride Action Network.

Key Developments in the Chesapeake Bay Watershed

Brief summaries of key developments regarding the Chesapeake Bay Watershed Total Maximum Daily Load (TMDL) including evaluations of progress, EPA expectations, press releases and reports. Includes links for more information on each development.

Adequacy Review of State Implementation Plan (SIP) Submissions for Conformity

This page is for state and local air quality regulators and transportation planners that offers guidance on how to reduce air pollution from cars, diesel trucks, city and school buses, construction equipme

General Information for Transportation and Conformity

Transportation conformity is required by the Clean Air Act section 176(c) (42 U.S.C. 7506(c)) to ensure that federal funding and approval are given to highway and transit projects that are consistent with SIP.

Frequent Questions for Hazardous Waste Generators

Links to frequent questions pages

Final Rule: 2013 Conditional Exclusions From Solid Waste and Hazardous Waste for Solvent-Contaminated Wipes

This is a regulation page for the final rule EPA issued on July 31, 2013 that modifies the hazardous waste management regulations for solvent-contaminated wipes under the Resource Conservation and Recovery Act (RCRA).

Frequent Questions About Implementing the Regulations for Solvent-Contaminated Wipes

Describes how solvent-contaminated wipes must be managed under the federal Resource Conservation and Recovery Act (RCRA) hazardous waste regulations.

Final Rule for Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles

EPA and National Highway Traffic Safety
Administration (NHTSA) are each finalizing rules to establish a comprehensive Heavy-Duty National Program that will reduce greenhouse gas emissions and fuel consumption for onroad heavy-duty vehicles.

Final Rule for Nonconformance Penalties for On-Highway Heavy-Duty Diesel Engines

EPA is taking final action to establish nonconformance penalties (NCPs) for manufacturers of heavy heavy-duty diesel engines (HHDDE) in model years 2012 and later for emissions of oxides of nitrogen (NOX) because we have found the criteria for NCPs.

Final Rule for Modification of Federal Onboard Diagnostic Regulations for: LD Vehicles, LD Trucks, MD Passenger Vehicles, Complete HD Vehicles and Engines Intended for Use in HD Vehicles Weighing 14,000 Pounds GVWR or Less

EPA is finalizing certain requirements associated with the Federal on-board diagnostic (OBD) system regulations.

Proposed Rule for Modification of Federal On Board Diagnostic Regulations for: Light Duty Vehicles, Light Duty Trucks, Medium Duty Passenger Vehicles, Complete Heavy Duty Vehicles and Engines Intended for Use in Heavy Duty Vehicles Weighing 14,000 Pounds

This page is information for the proposed rule for the Modification of Federal On Board Diagnostic Regulations for Light-Duty Vehicles, Light-Duty Trucks, etc. Includes links to Federal Register and final rule.

Final Rule for Phase 2 Emission Standards for New Nonroad Spark-Ignition Handheld Engines At or Below 19 Kilowatts and Minor Amendments to Emission Requirements Applicable to Small Spark-Ignition Engines and Marine Spark-Ignition Engines

Rule summary, rule history, CFR citations and additional resources concerning emissions standards for engines principally used in handheld lawn and garden equipment such as trimmers, leaf blowers, and chainsaws.

Proposed Rule and Related Materials for Control of Air Pollution: Minor Amendments to Emission Requirements Applicable to Small Nonroad Spark-Ignition Engines and Marine Spark Ignition Engines

Final Rule on Ozone Transport Commission; Low Emission Vehicle Program for the Northeast Ozone Transport Region

EPA is announcing its final determination that reduction of new motor vehicle emissions throughout the Northeast Ozone Transport Region (OTR) is necessary to mitigate the effects of air pollution transport.

Final Rule for Regulation of Fuels and Fuel Additives: Modifications to the Transmix Provisions Under the Diesel Sulfur Program

Final Rule for Revisions and Additions to Motor Vehicle Fuel Economy Label

EPA and the National Highway Traffic Safety Administration are revising the fuel economy and environment labels that appear on new vehicles beginning with 2013 models.

Final Rule for Revised Carbon Monoxide (CO) Standard for Class I and II Nonhandheld New Nonroad Phase 1 Small Spark-Ignition Engines

Rule published November 13, 1996, addressing the CO emission difference between oxygenated and nonoxygenated fuels that was not reflected when the Agency previously set the CO standard for these nonhandheld engines in a final rule published July 3, 1995.

Final Rule for Technical Amendments to the Highway and Nonroad Diesel Regulations

This action corrects errors and omissions from the previous rules, makes minor changes to the regulations to assist entities with regulatory compliance, and makes technical amendments that resulted from discussions with various diesel stakeholders.

Final Rule for Standards for Emissions From Natural Gas-Fueled, and Liquefied Petroleum Gas-Fueled Motor Vehicles and Motor Vehicle Engines, and Certification Procedures for Aftermarket Conversions

This rule provides emission standards and test procedures for the certification of new natural gasfueled, and liquefied petroleum gasfueled light-duty vehicles, light-duty trucks, heavy-duty engines and vehicles, and motorcycles.