Maximum Available Control Technology. For new and reconstructed plants, MACT is better than or equal to the emission control achieved in practice by the single best controlled similar plant. For existing plants, MACT is better than or equal to the average emissions of the best controlled 12 percent of similar plants.
Emissions limitations based on the best demonstrated control technology or practices in similar sources. Fed
The emission limitation reflecting the maximum degree of reduction in emissions that the permitting authority, taking into consideration the cost of achieving such emission reduction, and any non-air quality health and environmental impacts and energy requirements, determines is achievable by sources in the category of stationary sources, that shall not be less stringent than the MACT floor. Fed
The emission limitation which is not less stringent than the emission limitation achieved in practice by the best controlled similar source, and which reflects the maximum degree of reduction in emissions that the permitting authority, taking into consideration the cost of achieving such emission reduction, and any non-air quality health and environmental impacts and energy requirements, determines is achievable by sources in the affected source category. Fed
Maximum Achievable Emission Rate
Maximum Achievable Control Technology. Compare? Generally, the best available control technology, taking into account cost and technical feasibility.
Maximum Achievable Control Technology (MACT). The maximum degree of reduction that is achievable through capture, treatment, process changes, substitution of materials and work practices, and taking into account costs and benefits. MACT may be varied depending on whether the source is a new, existing, or area source.
Acronym for aximum chievable Control echnology
Maximum Achievable Control Technology The treatment standard used for hazardous air pollutants (air toxics) under the Clean Air Act. MACT is defined as a technology that will result in the "maximum degree of reductions… achievable," subject to economic, energy and environmental considerations. See Also: CAA, HAP...................
Maximum Achievable Control Technology. The maximum degree of reduction in emissions for new and existing air pollution sources, taking into consideration cost, non-air quality health and environmental impacts, and energy requirements.
Maximum Achievable Control Technology (The pollution control technology that achieves the maximum degree of reduction to be achieved by the National Emission Standards for Hazardous Air Pollutants (NESHAP).)
Maximum Achievable Control Technology. Emissions limitations based on the best demonstrated control technology or practices. This is a very high level of pollution control.
Maximum Achievable Control Technology. Technology controls to be established for major sources of the 188 compounds listed as Hazardous Air Pollutants (HAPs). MACT must reflect the maximum degree of reduction available, taking into account costs and other factors.
Maximum Available Control Technology. The emission standard for sources of air pollution requiring the maximum reduction of hazardous emissions, taking cost and feasibility into account. Under the Clean Air Act Amendments of 1990, the MACT must not be less than the average emission level achieved by controls on the best performing 12 percent of existing sources, by category of industrial and utility sources.
Maximum Achievable Control Technology. EPA standards mandated by the 1990 amendments to the federal Clean Air Act for the control of toxic emissions from various industries. Industries range from dry cleaners to petroleum refineries
The standard to which sources of HAPs will have to comply. The CAAA defines MACT as “the maximum degree of reduction in emissions…achievable for new or existing sources…taking into account the cost of achieving such reductions.†MACT standards for existing sources must be at least as stringent as the average level of control achieved at the best controlled 12% of facilities, and MACT for new sources will have to be even stricter.
