State and Federal Regulations
Clean Air Act (CAA)
Under the Clean Air Act (CAA), EPA sets limits on certain air pollutants, including setting limits on how much can be in the air anywhere in the United States. The Clean Air Act also gives EPA the authority to limit emissions of air pollutants coming from sources like chemical plants, utilities, and steel mills.
Code of Federal Regulations Title 40 (40 CFR)
Title 40 is the section of the CFR that deals with EPA's mission of protecting human health and the environment.
Note: Appendices A1-A8 of 40 CFR 60 contain Federal Test Methods 1 through 30B; for links to these and all other federally approved test methods see MCAQ’s stack testing page