Naaqs

Some articles on naaqs:

Clean Air Act (United States) - History - Legislation
... programs National Ambient Air Quality Standards (NAAQS) ... Prevention of Significant Deterioration (PSD) of air quality for areas attaining the NAAQS, and added requirements for non-attainment areas ... The NAAQS program was also expanded ...
Clean Air Act (United States) - History - History of The Clean Air Act - Clean Air Act Amendments of 1977
... Deterioration (PSD) of air quality in areas attaining the NAAQS ... The 1977 CAAA also contained requirements pertaining to sources in non-attainment areas for NAAQS ... to ensure attainment and maintenance of the NAAQS ...
Criteria Air Contaminants - Six Criteria Air Pollutants
... known as tropospheric ozone is also regulated by the NAAQS under the Clean Air Act ... Lead (Pb) In the mid-1970s, lead was listed as a criteria air pollutant that required NAAQS regulation ... established a “1.5 µg/m3 (maximum quarterly calendar average) Pb NAAQS in 1978.” The Clean Air Act requires periodic review of NAAQS, and new scientific data ...
Criteria Air Contaminants - Sections 108 and 109 of The U.S. Clean Air Act
... The EPA established the NAAQS according to Sections 108 and 109 of the U.S ... information on nature and effects of ambient exposure to them (3) to set primary NAAQS to protect human health with adequate margin of safety and to set secondary NAAQS to protect ... and revise, as appropriate, the criteria and NAAQS for a given listed pollutant or class of pollutants." ...