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  • Stationary Sources of Air Pollution
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Proposal Documentation for Reclassification of Major Sources as Area Sources Under Section 112 of the Clean Air Act

On June 25, 2019, EPA proposed regulatory text that would implement the clear language of the Clean Air Act that allows major sources of hazardous air pollutants (HAP) to reclassify as area sources at any time provided they permanently reduce hazardous air emissions.  This action would provide a level of fairness and flexibility for sources that reduce hazardous air pollutant emissions below major source thresholds to reclassify as area sources and reduce regulatory burden.

Read the proposed rule. 

October 1, 2020, the U.S. Environmental Protection Agency (EPA) issued the final MM2A rule. See the final MM2A rule here Reclassification of Major Sources as Area Sources Under Section 112 of the Clean Air Act

Supporting  information for the proposed rule is available below. 

Regulatory Impact Analysis for the Proposed Reclassification of Major Sources as Area Sources under Section 112 of the Clean Air Act (PDF)(305 pp, 7 MB; updated June 27, 2019)
 
 
  • Fact Sheet: Reclassification of Major Sources as Area Sources Under Section 112 of the Clean Air Act (MM2A) Proposal (pdf) (version updated July 3, 2019)
  • MM2A Proposal Cost Analysis Memo (pdf)
  • MM2A Proposal Cost Considerations Memo for 125 Percent Scenario (pdf) (version updated July 16, 2019)
  • MM2A Proposal Emissions Analysis Memo (pdf) (version updated July 16, 2019)
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Last updated on March 21, 2022