NSPSs are based on the pollution control technology available to that category of industrial source, but allow the affected industries the flexibility to devise a cost-effective means of reducing emissions. Title III of the CAAA further directed EPA to develop a list of sources that emit any of 188 HAPs, and to develop regulations for these categories of sources. To date, EPA has listed 174 categories and developed a schedule for the establishment of emission standards. The MACT is defined as the control technology achieving the maximum degree of reduction in the emission of the HAPs, taking into account cost and other factors. Visibility standards may also apply through the State Implementation Plan.
Regulations also address loading and unloading emissions.
Reformulated gasoline, automobile pollution control devices, and vapor recovery nozzles on gas pumps are a few of the mechanisms EPA uses to regulate mobile air emission sources. Back to the top Title IV Title IV establishes a sulfur dioxide emissions program designed to reduce the formation of acid rain. Reduction of sulfur dioxide releases will be obtained by granting to certain sources limited emissions allowances, which, beginning in 1995, will be set below previous levels of sulfur dioxide releases. One purpose of the operating permit is to include in a single document all air emissions requirements that apply to a given facility. Once a state program is approved by EPA, permits will be issued and monitored by that state.