{"abstract":"The Environmental Protection Agency (EPA) is proposing amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) From the Portland Cement Manufacturing Industry to address the results of the residual risk and technology review (RTR) the EPA is required to conduct in accordance with section 112 of the Clean Air Act (CAA). We found risks due to emissions of air toxics to be acceptable from this source category with an ample margin of safety, and we identified no new cost-effective controls under the technology review to achieve further emissions reductions. Therefore, we are proposing no revisions to the numerical emission limits based on these analyses. However, the EPA is proposing amendments to correct and clarify rule requirements and provisions. While the proposed amendments would not result in reductions in emissions of hazardous air pollutants (HAP), this action, if finalized, would result in improved monitoring, compliance, and implementation of the rule.","action":"Proposed rule.","agencies":[{"raw_name":"ENVIRONMENTAL PROTECTION AGENCY","name":"Environmental Protection Agency","id":145,"url":"https://www.federalregister.gov/agencies/environmental-protection-agency","json_url":"https://www.federalregister.gov/api/v1/agencies/145","parent_id":null,"slug":"environmental-protection-agency"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2017/09/21/2017-19448.html","cfr_references":[{"chapter":null,"citation_url":null,"part":63,"title":40}],"citation":"82 FR 44254","comment_url":null,"comments_close_on":"2017-11-06","correction_of":null,"corrections":[],"dates":"Comments. Comments must be received on or before November 6, 2017.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2016-0442","FRL-9967-61-OAR"],"dockets":[{"supporting_documents":[{"title":"Memorandum regarding Development of the RTR Risk Modeling Dataset for the Portland Cement Manufacturing Source Category June 14, 2017","document_id":"EPA-HQ-OAR-2016-0442-0188"},{"title":"Acute Model Inputs - Portland Cement Acute HAP Emissions Group 1","document_id":"EPA-HQ-OAR-2016-0442-0158"},{"title":"Actual Model Inputs - Portland Cement Actuals Facility List Group 1","document_id":"EPA-HQ-OAR-2016-0442-0157"},{"title":"Source Test Report - 2015 Compliance Program for Lehigh Southwest Cement Company, Permanente Plant, Cupertino, California. May 22, 2015","document_id":"EPA-HQ-OAR-2016-0442-0148"},{"title":"Nitrogen Oxide (NOx) and Carbon Monoxide (CO) Reduction in Cement Kilns. 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