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This proposal addresses the agency's residual risk and technology review (RTR) of the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Asphalt Processing and Asphalt Roofing Manufacturing. The Asphalt Processing and Asphalt Roofing Manufacturing NESHAP, subpart LLLLL, was promulgated pursuant to section 112(d) of the Clean Air Act (CAA) on May 7, 2003. The NESHAP established emission limitations and work practice requirements based on maximum achievable control technology (MACT) for controlling emissions of hazardous air pollutants (HAP) from asphalt processing and asphalt roofing manufacturing. Asphalt processing facilities produce "blown" asphalt for use in the asphalt roofing manufacturing industry and elsewhere. The emissions sources at processing facilities are blowing stills, storage tanks and loading racks. Asphalt roofing manufacturing facilities produce shingles and roll roofing products by applying the "blown" asphalt to a fiberglass or felt substrate. The emissions sources at roofing manufacturing facilities include coaters, coating mixers, applicators and storage tanks. The HAP emitted from these processes include organic compounds such as formaldehyde, hexane, phenol, polycyclic organic matter and toluene. This action implements the residual risk review requirements of CAA section 112(f)(2) and the technology review requirements of CAA section 112(d)(6). CAA 112(f)(2) directs EPA to revise the NESHAP if such revisions are required to provide an ample margin of safety to protect public health or to prevent, taking relevant factors into account, an adverse environmental effect. CAA section 112(d)(6) requires the EPA to review and revise the MACT standards as necessary, taking into account developments in practices, processes and control technologies, no less often than every 8 years. Pursuant to a court order, the EPA is obligated to complete the final action by March 13, 2020.

Overall Description of Deadline: Final Rule 3/13/2020--Court Order: United States District Court for the District of Columbia; California Communities Against Toxics, et al. v. Scott Pruitt; Case 1:15-cv-00512-TSC; 3/13/17.