Regulacje i polityka gospodarcza · 31.12.2014

National Ambient Air Quality Standards for Ozone

The Environmental Protection Agency (EPA) is announcing three public hearings for the proposed rule titled, "National Ambient Air Quality Standards for Ozone," that was published in the Federal Register on December 17, 2014. The hearings will be held in Washington, DC, Arlington, Texas, and Sacramento, California. Based on its review of the air quality criteria for ozone (O 3 ) and related photochemical oxidants and national ambient air quality standards (NAAQS) for O 3 , the EPA proposes to make revisions to the primary and secondary NAAQS for O 3 to provide requisite protection of public health and welfare, respectively. The EPA is proposing to revise the primary standard to a level within the range of 0.065 to 0.070 parts per million (ppm), and to revise the secondary standard to within the range of 0.065 to 0.070 ppm, which air quality analyses indicate would provide air quality, in terms of 3-year average W126 index values, at or below a range of 13-17 ppm-hours. The EPA proposes to make corresponding revisions in data handling conventions for O 3 and conforming changes to the Air Quality Index; to revise regulations for the Prevention of Significant Deterioration program to a