National Ambient Air Quality Standards definition

National Ambient Air Quality Standards or “NAAQS” means national ambient air quality standards that are promulgated pursuant to Section 109 of the Act, 42 U.S.C. § 7409.
National Ambient Air Quality Standards means, unless otherwise modified, the primary (health-related) and secondary (welfare-based) federal ambient air quality standards promulgated by the US EPA pursuant to Section 109 of the Federal Act.
National Ambient Air Quality Standards or “NAAQS,” means those ambient air quality standards promulgated by the EPA in 40 C.F.R. Part 50 as of the effective date of the federal final rule published by EPA in the Federal Register on January 15, 2013 (78 FR 3086), as set forth in Appendix B of Regulation 19.

Examples of National Ambient Air Quality Standards in a sentence

  • For example, in 2015, the Environmental Protection Agency (“EPA”) finalized a rule strengthening the primary and secondary National Ambient Air Quality Standards (“NAAQS”) for ground level ozone, both of which are eight-hour concentration standards of 70 parts per billion.

  • Regulatory Setting: Ascent will provide an updated accounting of the region’s attainment status for various pollutants per the California Ambient Air Quality Standards (CAAQS) and the National Ambient Air Quality Standards (NAAQS), along with any regional air quality regulations, thresholds or guidance issued by BAAQMD.


More Definitions of National Ambient Air Quality Standards

National Ambient Air Quality Standards means those primary and secondary ambient air quality standards which are promulgated by the Administrator of the Federal Environmental Protection Agency.
National Ambient Air Quality Standards or “NAAQS” shall mean national ambient air quality standards that are promulgated pursuant to Section 109 of the CAA, 42 U.S.C. § 7409;
National Ambient Air Quality Standards means the air quality standards for outside air as established in the clean air act.
National Ambient Air Quality Standards means national air quality standards promulgated pursuant to Section 109 of the Act, 42 U.S.C. § 7409.
National Ambient Air Quality Standards means those primary and secondary ambient air quality standards which are promulgated by the Administrator of the Federal Environmental Protection Agency. “National Weather Service” means an agency of the United States Commerce Department charged with the
National Ambient Air Quality Standards. (NAAQS) means air quali- ty standards promulgated for criteria pollutants under the federal Clean Air Act (40 C.F.R. 50). The standard for carbon monoxide is thirty-five parts per million over a one-hour period or nine parts per million over an eight-hour period. The standard for ozone is 0.12 parts per million over a one-hour period. The standard for PM10 is fifty µg/m3 annual arithmetic mean or 150 µg/m3 maximum twenty-four hour average concentration.
National Ambient Air Quality Standards or "NAAQS" means those standards established pursuant to Section 109 of the Act and include standards for carbon monoxide (CO), lead (Pb), nitrogen dioxide (NO2), ozone, particulate matter (PM10, PM 2.5), and sulfur dioxide (SO2).