District of Columbia Ozone Powered Standards 
Green Car Congress
OCTOBER 1, 2015
issued its final rule revising the National Ambient Air Quality Standards (NAAQS) for ground-level ozone to 70 parts per billion (ppb) from 75 ppb to protect public health. Ground-level ozone forms when nitrogen oxides (NO x ) and volatile organic compounds (VOCs) react in the air. The US Environmental Protection Agency (EPA).
Green Car Congress
MARCH 1, 2011
will pay a civil penalty of $2 million to resolve claims that the company imported and sold nearly 80,000 nonroad engines and equipment from China that did not meet standards under the Clean Air Act. Ground level ozone can trigger a variety of health problems, including chest pain, coughing, throat irritation and congestion.
Green Car Congress
FEBRUARY 28, 2011
will pay a civil penalty of $2 million to resolve claims that the company imported and sold nearly 80,000 nonroad engines and equipment from China that did not meet standards under the Clean Air Act. Ground level ozone can trigger a variety of health problems, including chest pain, coughing, throat irritation and congestion.
Green Car Congress
JULY 6, 2010
The US Environmental Protection Agency (EPA) is proposing regulations employing the “good neighbor” provision of the Clean Air Act to reduce interstate transport of upwind state emissions from power generation that contribute to air quality problems in downwind states. NO x emissions would drop by 52%.
Green Car Congress
OCTOBER 15, 2009
The existing US NO x cap-and-trade program lowered 2008 summertime NO x emissions from power plants and large industrial sources 62% compared to year 2000 levels and 75% lower than in 1990, according to a report released by the US Environmental Protection Agency (EPA). State level ozone emissions in the NBP, from 1990 to 2010 (projected).
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