2007 Ozone Standards 
Green Car Congress
JULY 25, 2009
Exposure to ozone at levels currently deemed safe by the NAAQS clean air standards can have a significant and negative effect on lung function, according to researchers at the University of California, Davis. The previous primary and secondary standards were identical 8-hour standards, set at 0.08 Earlier post.).
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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Green Car Congress
AUGUST 12, 2016
The first peer-reviewed study to directly quantify how emissions from oil and natural gas (O&NG) activities influence summertime tropospheric ozone (O 3 ) pollution in the Colorado Front Range confirms that chemical vapors from oil and gas activities are a significant contributor to the region’s chronic ozone problem.
Green Car Congress
DECEMBER 4, 2013
2010 engines emissions reduction relative to 2010, 2007, and 2004 US emission standards. earlier post ), found that emissions of NO 2 and other nitrogen oxides—which can have direct health effects and contribute to the formation of smog—were approximately 61% below the 2010 EPA standard and 99% lower than in 2004 engines.
Green Car Congress
JANUARY 27, 2015
exhaust from heavy-duty diesel engines meeting EPA 2007 and later emissions requirements—has found no evidence of carcinogenic lung tumors. The study exposed laboratory rats 80 hours a week, for up to 30 months, to emissions from a heavy-duty diesel engine meeting 2007 US EPA standards using new filters and other control technology.
Green Car Congress
SEPTEMBER 19, 2019
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. California’s ability to enforce its Low Emission Vehicle program and other clean air standards to address harmful smog-forming vehicle emissions—i.e.,
Green Car Congress
DECEMBER 15, 2010
Rush Truck Centers and SACE will determine select used trucks to be retrofitted, and buyers will also have the option of choosing to retrofit a pre-2007 vehicle from other trucks in inventory at the dealer’s locations. About 8 million are exposed to air quality that violates the federal standards for particulate matter.
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