{"abstract":"EPA is proposing to make two determinations regarding the Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE 8-hour ozone moderate nonattainment area (the Philadelphia Area). First, EPA is proposing to make a determination that the Philadelphia Area has attained the 1997 8-hour ozone National Ambient Air Quality Standard (NAAQS). This proposed determination is based upon complete, quality assured, and certified ambient air monitoring data that show the area has monitored attainment of the 1997 8-hour ozone NAAQS for the 2008- 2010 monitoring period. If this proposal is made final, the requirement for the Philadelphia Area to submit certain planning requirements related to the attainment of the 1997 8-hours ozone NAAQS shall be suspended for so long as the area continues to attain the 1997 8-hour ozone NAAQS. Although these requirements are suspended, EPA is not precluded from acting upon these elements at any time if submitted to EPA for review and approval. Second, EPA is also proposing to determine that the Philadelphia Area has attained the 1997 8-hour ozone NAAQS by its attainment date of June 15, 2011. Finally, EPA is withdrawing the May 8, 2009 proposed disapprovals of the attainment demonstrations for the Philadelphia Area, based on the ambient air quality monitoring data demonstrating attainment. These actions are being taken under the Clean Air Act (CAA).","action":"Proposed rule and withdrawal of 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/2011/12/09/2011-31665.html","cfr_references":[{"chapter":null,"citation_url":null,"part":52,"title":40}],"citation":"76 FR 76929","comment_url":null,"comments_close_on":"2012-01-09","correction_of":null,"corrections":[],"dates":"Written comments must be received on or before January 9, 2012.","disposition_notes":null,"docket_ids":["EPA-R03-OAR-2011-0713","FRL-9504-9"],"dockets":[],"document_number":"2011-31665","effective_on":null,"end_page":76932,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2011/12/09/2011-31665.xml","html_url":"https://www.federalregister.gov/documents/2011/12/09/2011-31665/approval-and-promulgation-of-air-quality-implementation-plans-delaware-maryland-new-jersey-and","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2011-31665?publication_date=2011-12-09","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2011-12-09/2011-31665/mods.xml","not_received_for_publication":null,"page_length":4,"page_views":{"count":76,"last_updated":"2026-08-24 16:15:16 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2011-12-09/pdf/2011-31665.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2011-31665.pdf?1323362015","publication_date":"2011-12-09","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2011/12/09/2011-31665.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Technical Support Document-Delaware 1997 8-hr ozone 2009 Attainment-Adequacy Review","document_id":"EPA-R03-OAR-2008-0930-0016"},{"title":"Technical Support Document-Delaware 1997 8-hr ozone attainment demonstration-Modelling","document_id":"EPA-R03-OAR-2008-0930-0015"},{"title":"Letter from EPA Region III to Delaware DNREC re: Attainment Demonstration","document_id":"EPA-R03-OAR-2008-0930-0011"},{"title":"Approval and Promulgation of Air Quality Implementation Plans; Delaware; Attainment Demonstration for the Philadelphia-Wilmington-Atlantic City Moderate 8-Hour Ozone Nonattainment Area","document_id":"EPA-R03-OAR-2008-0930-0007"},{"title":"Technical Support Document","document_id":"EPA-R03-OAR-2008-0930-0006"},{"title":"State Submittal - Appendix 7-10 - NESCAUM Conceptual Model","document_id":"EPA-R03-OAR-2008-0930-0005"},{"title":"State Submittal - Appendix 7-2 - TSD - SMOKE and CMAQ System","document_id":"EPA-R03-OAR-2008-0930-0004"},{"title":"State Submittal - Appendix List","document_id":"EPA-R03-OAR-2008-0930-0003"},{"title":"State Submittal - DE Attainment & RFP Final SIP","document_id":"EPA-R03-OAR-2008-0930-0002"},{"title":"State Submittal - Delaware Transmittal Letter","document_id":"EPA-R03-OAR-2008-0930-0001"}],"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-R03-OAR-2008-0930","supporting_documents_count":10,"docket_id":"EPA-R03-OAR-2008-0930","regulation_id_number":null,"title":"Delaware- 8-Hour Ozone Attainment Demonstration for the Philadelphia-Wilmington-Atlantic City Moderate Nonattainment Area ","checked_regulationsdotgov_at":"2011-12-09T16:00:09Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":76929,"subtype":null,"title":"Approval and Promulgation of Air Quality Implementation Plans; Delaware, Maryland, New Jersey, and Pennsylvania; Determinations of Attainment of the 1997 8-Hour Ozone Standard for the Philadelphia-Wilmington-Atlantic City Moderate Nonattainment Area and Withdrawal of Attainment Demonstration Proposed Disapprovals","toc_doc":"Delaware, Maryland, New Jersey, Pennsylvania; Determinations of Attainment, etc.; Withdrawal","toc_subject":"Approvals and Promulgations of Air Quality Implementation Plans:","topics":["Air pollution control","Environmental protection","Intergovernmental relations","Ozone","Reporting and recordkeeping requirements"],"type":"Proposed Rule","volume":76}