Green Car Congress

NOVEMBER 14, 2018

The CTI will include a future rulemaking that will update the existing NO x standard which was last set in 2001 while also streamlining compliance and certification requirements. The US has made major reductions in NO x emissions, but it’s been nearly 20 years since EPA updated these standards.

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EPA Cleaner Standards 2001 249

Green Car Congress

JANUARY 7, 2020

The eventual CTI rulemaking will establish new, more stringent emission standards for NO x and other pollutants for highway heavy-duty engines. This action follows on the petitions from more than 20 organizations, including state and local air agencies, to revise and promulgate more stringent NO x standards.

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EPA Ozone Clean Cleaning 150

Green Car Congress

SEPTEMBER 9, 2011

US EPA Region 9 8-hour ozone trends, 1979-2000. These State Implementation Plans (SIPs) are the roadmaps to meeting the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) of 0.08 In 1997, EPA first established the 8-hour ozone standard, which replaced the older 1-hour ozone standard (0.12

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Ozone EPA Pollution 2002 236

Green Car Congress

MARCH 3, 2017

The bill would amend the Clean Air Act to extend the Reid vapor pressure (RVP) waiver to ethanol blends above 10%. Each year, the Environmental Protection Agency (EPA) regulates RVP for gasoline and gasoline-ethanol blended during the summer ozone season from 1 June until 15 September. US Senators Deb Fischer (R-Neb.),

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Ozone EPA Gasoline Iowa 150