doi:10.5194/nhess-9-767-2009On May 26, 2005 (70 FR 30592-30604), EPA revised the 40 CFR Part 51 regulations implementing the eight-hour ozone national ambient air quality standards (NAAQS). The May 26, 2005 final rule addresses the following issues: 1) which contingency measures related ...
On July 17, 1997, the US Environmental Protection Agency (EPA) revised the National Ambient Air Quality Standards (NAAQS) to address ambient air concentrat... Khosah,R.P,McManus,... 被引量: 1发表: 1999年 Particulate Matter (PM2.5): Implemenation of the 1997 National Ambient Air Quality ...
The article reports on the revisions to implementation rule for the 1997 eight-hour ozone national ambient air quality standards (NAAQS) proposed by the U.S. Environmental Protection Agency (EPA) on January 16, 2009. It mentions the aims of the revisions, which include the removal of ...
The article reports on the designation by the Environmental Protection Agency (EPA) to 16 areas as being nonattainment for the 2008 lead national ambient air quality standards (NAAQS) in the U.S. on November 22, 2010. It states that the agency's designation was based on ambient air quality...