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Clean air act8/22/2023 ![]() "Primary" standards establish limits to protect public health, including the health of "sensitive" populations such as asthmatics, children, and the elderly. National Ambient Air Quality Standards (NAAQS), Primary and Secondary - CAA established two thresholds for the six criteria pollutants. The criteria pollutants list consists of ozone (O3), carbon monoxide (CO), nitrogen oxides (NOx), sulfur oxides (SOx), particulate matter (PM10), and lead (Pb). The level of permitting and control technology required on campus air pollution sources depends on whether its geographic region has air pollution below the levels determined by EPA.Ĭriteria Pollutants - six common pollutants found in all communities that come from a variety of sources. To enforce CAA, EPA compares levels of air pollutants across the country to standards it has established as protective of human health and the environment. The federal regulations for implementing these requirements are in 40 CFR Subchapter C, Parts 50-99. ![]() The amendments continued to allow the states to implement CAA through their SIPs, but extended enforcement powers to both the states and the EPA. The 1990 amendments also created a permitting program and added additional requirements for other air pollution issues, such as acid rain, destruction of the ozone layer, and air toxics. Consequently, in the 1990 amendments, Congress specified time frames for attainment of these air pollution levels. However, even with these controls, many regions did not achieve the desired levels of clean air. CAA required that each state create a state implementation program (SIP) outlining the controls that would attain these levels. ![]() The 1970 Clean Air Act Amendments directed EPA to identify acceptable levels of selected air pollutants that would protect human health. Significant amendments occurred in 1970, 1977, and 1990. The Clean Air Act (CAA) is a series of amendments made to the 1967 Air Quality Act.
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