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Updates on Title III: Air Quality Evaluation and MACT Standards Under the CAAA

This report details the updates to Title III of the Clean Air Act Amendments (CAAA), focusing on the evaluation of air quality and Maximum Achievable Control Technology (MACT) standards. The Environmental Protection Agency (EPA) establishes standards for major sources of hazardous air pollutants (HAPs) to address risks and promote technology reviews. The document outlines the incorporation of the Risk and Technology Reviews (RTR) and regulations affecting 37 source categories, aiming to review and improve standards to mitigate residual risks associated with various production processes.

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Updates on Title III: Air Quality Evaluation and MACT Standards Under the CAAA

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  1. TITLE III UPDATE Joel Leon Air Quality Evaluation Section Bureau of Technical Services

  2. TITLE III: MACT Standards 1990 CAAA direct EPA to set standards for all major sources of HAPS (and some area sources that are listed under the Urban Air Toxics Strategy - UATS). Promulgated 94 MACT Standards for Major Sources Promulgated Area Source Standards addressing all 70 source categories required by the UATS

  3. Title III Update: Risk and Technology Reviews (RTR) • Section 112(f)(2) of the CAA directs EPA to conduct risk assessments on each source category subject to MACT, and to determine if additional standards are needed to address residual risks. • Section 112(d)(6) of the CAA requires EPA to review and revise the MACT standards, as necessary, taking into account developments in practices, processes, and control technology

  4. Title III Update: RTR Regulations • To date, EPA has promulgated RTR Rules addressing 37 source categories • 6 RTR Regulations under court order deadline to be proposed by 10/31/2012 • Acrylic/Modacrylic Fibers Production • Flexible Polyurethane Foam Production • Off-site Waste Treatment • Phosphoric Acid and Phosphate Fertilizers • Polycarbonates Production • Polymers and Resins III Production

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