{"abstract":"Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is finalizing an approval of a portion of a revision to the Arkansas State Implementation Plan (SIP) submitted by the State of Arkansas through the Arkansas Department of Environmental Quality (ADEQ) that addresses certain requirements of the CAA and the EPA's regional haze rules for the protection of visibility in mandatory Class I Federal areas (Class I areas) for the first implementation period. The EPA is taking final action to approve, among other things, the state's sulfur dioxide (SO<INF>2</INF>) and particulate matter (PM) best available retrofit technology (BART) determinations for electric generating units (EGUs) in Arkansas and the determination that no additional SO<INF>2</INF> and PM controls at any Arkansas sources are necessary under reasonable progress. In conjunction with this final approval of a portion of the SIP revision, we are finalizing in a separate rulemaking, published elsewhere in this issue of the Federal Register, our withdrawal of the corresponding Federal implementation plan (FIP) provisions established in a prior action to address regional haze requirements for Arkansas.","action":"Final 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/2019/09/27/2019-19497.html","cfr_references":[{"chapter":null,"citation_url":null,"part":52,"title":40}],"citation":"84 FR 51033","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This rule is effective on October 28, 2019.","disposition_notes":null,"docket_ids":["EPA-R06-OAR-2015-0189","FRL-9998-66-Region 6"],"dockets":[],"document_number":"2019-19497","effective_on":"2019-10-28","end_page":51054,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2019/09/27/2019-19497.xml","html_url":"https://www.federalregister.gov/documents/2019/09/27/2019-19497/approval-and-promulgation-of-implementation-plans-arkansas-approval-of-regional-haze-state","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2019-19497?publication_date=2019-09-27","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2019-09-27/2019-19497/mods.xml","not_received_for_publication":null,"page_length":22,"page_views":{"count":387,"last_updated":"2026-09-21 00:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2019-09-27/pdf/2019-19497.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2019-19497.pdf?1569501915","publication_date":"2019-09-27","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2019/09/27/2019-19497.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"AR020.0276-000 NPCA, Sierra Club, and Earth Justice Comments and PDF exhibits","document_id":"EPA-R06-OAR-2015-0189-0276"},{"title":"AR020.0271-000 SIP Appendix D","document_id":"EPA-R06-OAR-2015-0189-0271"},{"title":"AR020.0269-000 SIP Appendix B","document_id":"EPA-R06-OAR-2015-0189-0269"},{"title":"AR020.0243 Entergy Petition Seeking Reconsideration and Request for Administrative Stay of the Arkansas Regional Haze FIP. 306 pages 7.4 MB x7d","document_id":"EPA-R06-OAR-2015-0189-0243"},{"title":"AR020.0233 TCEQ_CAMx_Modeling_Guidance_2007Dec","document_id":"EPA-R06-OAR-2015-0189-0233"},{"title":"AR020.0230 reasonable_progress_guid071307","document_id":"EPA-R06-OAR-2015-0189-0230"},{"title":"AR020.0227 IWAQM phase 1","document_id":"EPA-R06-OAR-2015-0189-0227"},{"title":"AR020.0225 final-03-pm-rh-guidance_2007","document_id":"EPA-R06-OAR-2015-0189-0225"},{"title":"AR020.0224 Exhibit 7- Evaluation of Craig BART Modeling for Regional Haze Analysis- Hoffnagle","document_id":"EPA-R06-OAR-2015-0189-0224"},{"title":"AR020.0222 EPA RTC analysis_Craig Station","document_id":"EPA-R06-OAR-2015-0189-0222"}],"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-R06-OAR-2015-0189","supporting_documents_count":233,"docket_id":"EPA-R06-OAR-2015-0189","regulation_id_number":null,"title":"AR020 State of Arkansas; Regional Haze and Interstate Visibility Transport Federal Implementation Plan","checked_regulationsdotgov_at":"2019-09-30T03:30:08Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":51033,"subtype":null,"title":"Approval and Promulgation of Implementation Plans; Arkansas; Approval of Regional Haze State Implementation Plan Revision for Electric Generating Units in Arkansas","toc_doc":"Arkansas; Approval of Regional Haze State Implementation Plan Revision for Electric Generating Units in Arkansas","toc_subject":"Air Quality State Implementation Plans; Approvals and Promulgations:","topics":["Air pollution control","Environmental protection","Incorporation by reference","Intergovernmental relations","Ozone","Particulate matter","Reporting and recordkeeping requirements"],"type":"Rule","volume":84}