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Clean Air Act (CAA)

Since 1967, the Clean Air Act (CAA) has evolved from a set of principles to guide States in controlling sources of air pollution to a series of detailed control requirements that the federal government implements and the States administer. CAA has historically regulated air pollution sources through three primary programs: 1) ambient air quality regulation of new and existing sources through emission limits contained in state implementation plans (SIP's); 2) more stringent control technology and permitting requirements for new sources; and 3) specific pollution problems, including hazardous air pollutants (HAP's) and visibility impairment. The 1990 amendments to CAA not only modified these three programs, but also addressed new air pollutants and added a fourth category- a comprehensive operating permit program. The comprehensive operating permit program helps to establish in one place all CAA requirements that apply to a given stationary source of air emissions. CAA is set out in six titles: Title I- Air Pollution Prevention and Control, Title II - Emission Standards for Mobile Sources, Title III - General Provisions, Title IV - Acid Deposition Control, Title V - Permits and Title VI - Stratospheric Ozone Protection.

MSU's incinerators, paint booth, cold parts cleaners, and power plant are regulated under our Renewable Operating Permit (ROP). The ROP requires specific operational controls and is regulated by the MDEQ Air Quality Division.

MSU also manages CFC refrigerants under EPA's Title VI program.