2018 Cleaning Ozone Standards 
Green Car Congress
FEBRUARY 6, 2018
Ozone levels across much of North America and Europe dropped significantly between 2000 and 2014. People living in parts of southern Europe, South Korea and southern Japan and China also experienced more than 15 days a year of ozone levels above 70 ppb. Trends in daily maximum ozone levels (known as 4MDA8) at urban and non-urban sites.
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.
Green Car Congress
SEPTEMBER 19, 2019
The action finalizes parts of the SAFE Vehicles Rule that was first proposed on 2 August 2018. This action is based on the premise that federal law preempts state and local tailpipe greenhouse gas (GHG) emissions standards as well as zero emission vehicle (ZEV) mandates. Earlier post.)
Green Car Congress
APRIL 15, 2020
The US Environmental Protection Agency (EPA) is proposing to retain, without changes, the National Ambient Air Quality Standards (NAAQS) for particulate matter (PM) including both fine particles (PM 2.5 ) and coarse particles (PM 10 ). EPA sets both an annual and a 24-hour standard for fine particles (PM 2.5 ). concentrations.
Green Car Congress
MARCH 24, 2017
On the first day of a two-day board meeting—the second day of which (Friday 24 March) will consider the Advanced Clean Cars Midterm Review—the California Air Resources Board (ARB) took a number of climate and air quality actions. emissions by more than 20%. emissions by more than 20%.
Green Car Congress
FEBRUARY 16, 2018
Consumer products such as shampoo, cleaning products and paint now contribute as much to emitted volatile organic compounds (VOCs) in cities as tailpipe emissions from vehicles, according to a new study led by NOAA. Recent research suggests that adverse human health effects occur below current US standards for both PM 2.5
Green Car Congress
MAY 1, 2018
They found that levels of pollutants that can contribute to the formation of ground-level ozone, or smog, have failed to continue a fairly steady decline as estimated by the US Environmental Protection Agency. These results show that meeting future air quality standards for ozone pollution will be more challenging than previously thought.
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