Research findings from the Center for Air Quality, Climate, and Energy Solutions (CACES) at Carnegie Mellon University show significant human health benefits when air quality is better than the current national ambient air quality standard
. The estimate of lives that could be saved by further reduction of air pollution levels is more than thirty thousand, which is similar to the number of deaths from car accidents each year.
and revision of the ambient air quality standards
ambient air quality standard
indicates that it was a limited tool for
suppose that EPA's ambient air quality standard
places the entire
In this proposal, the Environmental Protection Agency requests comment on alternative approaches to implementing the 8-hour national ambient air quality standard
(NAAQS) for ozone that it promulgated amid controversy in 1997.
On October 1, EPA released its final ozone standard, the National Ambient Air Quality Standard
(NAAQS), which lowers the standard from 75 parts per billion (ppb) to 70 ppb.
(2) In December 2012 the EPA reduced the annual primary National Ambient Air Quality Standard
(NAAQS) for P[M.sub.2.5] to a level it anticipates will protect public health with an adequate margin of safety when combined with the existing 24-hour standard.
"This reclassification gives DEP greater flexibility in the design of a proper control program to bring the county into attainment with the eight-hour ozone National Ambient Air Quality Standard
," said McGinty.
The National Ambient Air Quality Standard
for particulate matter [less than] 10 [mu]m in diameter ([PM.sub.10]) is 150 [mu]g/[m.sup.3], averaged over 24 hours .
According to Judy Graham, associate director of EPA's environmental criteria and assessment office in Research Triangle Park, N.C., EPA based its National Ambient Air Quality Standard
(NAAQS) for ozone primarily on two criteria: symptoms in exposed people, such as difficulty breathing, and how much air exposed people can exhale in 1 second.
"Our National Ambient Air Quality standard
that was announced day before yesterday surpassed the air quality standards of many, many advanced countries including the United States.