Motor vehicle pollution

Removal of the Reformulated Gasoline Program From the Southern Maine Area

In this final action, the Environmental Protection Agency (EPA) is amending its reformulated gasoline (RFG) regulations to reflect that York, Cumberland, Androscoggin, Sagadahoc, Kennebec, Knox and Lincoln counties in Maine (the Southern Maine Area) are no longer Federal RFG covered areas as of September 30, 2021. EPA previously approved a petition from Maine to opt out of the Federal RFG program and removed the requirement to sell Federal RFG in the Southern Maine Area as of September 30, 2021.

Publication Date: 
Friday, August 26, 2022 - 4:00am

Improvements for Heavy-Duty Engine and Vehicle Test Procedures

This final rule includes corrections, clarifications, additional flexibilities, and adjustment factors to improve the Greenhouse gas Emissions Model (GEM) compliance tool for heavy-duty vehicles while more closely matching the outputs produced by the original GEM version 3.0 that was used to establish the CO<INF>2</INF> standards for Model Years 2021 and later in the 2016 Heavy-duty Phase 2 final rule. Given the nature of this rule, there will be neither significant environmental impacts nor significant economic impacts.

Publication Date: 
Thursday, July 28, 2022 - 4:00am

Approval of Clean Air Act Operating Permit Program Revisions; Negative Declaration of Existing Hospital/Medical/Infectious Waste Incinerators and Administrative Updates; South Dakota

The Environmental Protection Agency (EPA or the ``Agency'') is proposing full approval of revisions to the South Dakota operating permit program for stationary sources under the Clean Air Act (CAA), title V (the ``title V program'') and a Clean Air Act (CAA) section 111(d)/129 negative declaration for incinerators subject to the Hospital/Medical/Infectious Waste Incinerators (HMIWI) Emissions Guidelines. EPA is proposing this action in accordance with the CAA.

Publication Date: 
Wednesday, May 18, 2022 - 4:00am

Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards

The Environmental Protection Agency (EPA) is proposing a rule that would reduce air pollution from highway heavy-duty vehicles and engines, including ozone, particulate matter, and greenhouse gases. This proposal would change the heavy-duty emission control program-- including the standards, test procedures, useful life, warranty, and other requirements--to further reduce the air quality impacts of heavy- duty engines across a range of operating conditions and over a longer period of the operational life of heavy-duty engines.

Publication Date: 
Monday, March 28, 2022 - 4:00am

Revised 2023 and Later Model Year Light-Duty Vehicle Greenhouse Gas Emissions Standards

The Environmental Protection Agency (EPA) is revising the greenhouse gas (GHG) emissions standards under the Clean Air Act section 202(a) for light-duty vehicles for 2023 and later model years to make the standards more stringent.

Publication Date: 
Thursday, December 30, 2021 - 4:00am

Fuels Regulatory Streamlining

This action updates many of EPA's existing gasoline, diesel, and other fuel quality programs to improve overall compliance assurance and maintain environmental performance, while reducing compliance costs for industry and EPA.

Publication Date: 
Friday, December 4, 2020 - 4:00am