Laws & Regulations

Tarps Approved for Use with Dimethyl Disulfide (DMDS) Products

Only the tarps listed here are acceptable for use with these soil fumigant pesticide products, as indicated on DMDS labels. Acceptance is based on EPA's review of testing these agricultural films for permeability to the active ingredient DMDS.

Tarps

Soil fumigant applications can qualify for buffer zone reduction credits if applicators use tarps that are highly impermeable to pesticide chemicals. There are special tarp requirements for the active ingredient dimethyl disulfide (DMDS).

Transportation, Air Pollution and Climate Change

Learn how emissions reductions, advancements in fuels and fuel economy, and working with industry to find solutions to air pollution problems benefit human and environmental health, create consumer savings and are cost effective.

Mobile Source Pollution and Related Health Effects

This site provides information on the health effects of air toxics from vehicles to both groups and individuals looking to further their subject knowledge, learn about EPA’s role in reducing air toxics, and find out how individuals can play a role.

EPA Webinar Slides on Tier 3 Gasoline Sulfur Regulations

On September 20, 2016, EPA presented a webinar related to the implementation of Tier 3 regulations under the Gasoline Sulfur fuel program.

Direct Final Rule for Revisions to In-Use Testing for Heavy-Duty Diesel Engines and Vehicles; Emissions Measurement and Instrumentation; Not-to-Exceed Emission Standards; and Technical Amendments for Off-Highway Engines

Rule summary, CFR citations and additonal information concerning amendments to EPA’s mobile source emission standards and test procedures.

Proposed Rule and Related Materials for Heavy-Duty Highway Program: Revisions for Emergency Vehicles and SCR Maintenance

May 23, 2012, Notice of Proposed Rulemaking with revisions related to emissions controls on diesel-powered emergency vehicles and revisions related to scheduled maintenance intervals for diesel engines and vehicles using Selective Catalytic Reduction (SCR)

Final Rule for Amendments Related to Tier 3 Motor Vehicle Emission and Fuel Standards

Proposed Rule for Amendments Related to: Tier 3 Motor Vehicle Emission and Fuel Standards, Nonroad Engine and Equipment

Link to Federal Register Notice from February 19, 2015 announcing Amendments Related to: Tier 3 Motor Vehicle Emission and Fuel Standards, Nonroad Engine and Equipment Programs, and MARPOL Annex VI Implementation.

Amendments Related to Tier 3 Motor Vehicle Emission and Fuel Standards, Nonroad Engine and Equipment Programs, and MARPOL Annex VI Implementation

Amendments Related to: Tier 3 Motor Vehicle Emission and Fuel Standards, Nonroad Engine and Equipment Programs, and MARPOL Annex VI Implementation

Final Rule for Clean Alternative Fuel Vehicle and Engine Conversions

EPA is streamlining the process by which manufacturers of clean alternative fuel conversion systems may demonstrate compliance with vehicle and engine emissions requirements.

Proposed Rule and Related Materials for Clean Alternative Fuel Vehicle and Engine Conversions

Following is information for the proposed rule for Clean Alternative Fuel Vehicle and Engine Conversions.

Final Rule for Control of Air Pollution from Aircraft and Aircraft Engines: Emission Standards and Test Procedures

EPA is amending the existing emission standards for oxides of nitrogen (NOx) for new commercial aircraft engines. These standards are equivalent to the NOx emission standards of the United Nations International Civil Aviation Organization (ICAO).

Final Rule for Control of Air Pollution From Motor Vehicles and New Motor Vehicle Engines; Modification of Federal Onboard Diagnostic Regulations for Light-Duty Vehicles and Light-Duty Trucks; Extension of Acceptance of California OBD

This action finalizes modifications to the federal on-board diagnostics regulations, including: harmonizing the emission levels above which a component or system is considered malfunctioning with those of the California Air Resources Board (CARB).

Final Rule for Control of Air Pollution From Aircraft and Aircraft Engines; Emission Standards and Test Procedures

EPA adopted 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.

Final Rule for Control of Air Pollution; Emission Standards for New Nonroad Spark-Ignition Engines At or Below 19 Kilowatts

This action establishes Phase 1 standards for new nonroad spark-ignition (SI) engines at or below 19 kilowatts (25 horsepower). These engines are used principally in lawn and garden equipment.

Proposed Rule and Response to Comment for Control of Air Pollution; Emission Standards for New Nonroad Spark-Ignition Engines At or Below 19 Kilowatts

Link to the Federal Register notice of the proposed rule, final rue and response to comments.

Final Rule for Control of Air Pollution From New Motor Vehicles and New Motor Vehicle Engines; Regulations Requiring Onboard Diagnostic Systems on 2010 and Later Heavy-Duty Engines Used in Highway Applications Over 14,000 Pounds

Includes rule summary, rule history, links to Federal Register notices, summary and analysis of comments and fact sheets.

Proposed Rule and Related Materials for Control of Air Pollution From New Motor Vehicles and New Motor Vehicle Engines; Regulations Requiring Onboard Diagnostic Systems on 2010 and Later Heavy-Duty Engines Used in Highway Applications Over 14,000 Pounds

Includes links to Federal Register citation, fact sheet and technical support document.

Final Rule for Control of Air Pollution From New Motor Vehicles: Tier 2 Motor Vehicle Emissions Standards and Gasoline Sulfur Control Requirements

The U.S. Environmental Protection Agency (EPA) is announcing more protective tailpipe emissions standards for all passenger vehicles, including sport utility vehicles (SUVs), minivans, vans and pick-up trucks.