{"abstract":"The U.S. Environmental Protection Agency (EPA) is finalizing a revision to regulations applicable to permitting of stationary sources of air pollution under the New Source Review (NSR) and title V programs in the Clean Air Act (CAA or Act). For sources in the oil and natural gas sector, this rule clarifies the meaning of the term \"adjacent\" that is used to determine the scope of a \"stationary source\" for purposes of the Prevention of Significant Deterioration (PSD) and Nonattainment NSR (NNSR) preconstruction permitting programs and the scope of a \"major source\" in the title V operating permit program in the onshore oil and natural gas sector. The revised definitions are based on the proximity of emitting activities and consideration of whether the activities share equipment. We believe that this clarification will provide greater certainty for the regulated community and for permitting authorities, and will result in more consistent determinations of the scope of a source in this sector. The EPA is adopting this revised definition in the regulations that apply to permits issued by the EPA and states to which the EPA has delegated federal authority to administer these programs. Other state and local permitting authorities with EPA-approved programs may also revise their permit programs to adopt this definition, but are not required to do so.","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/2016/06/03/2016-11968.html","cfr_references":[{"chapter":null,"citation_url":null,"part":51,"title":40},{"chapter":null,"citation_url":null,"part":52,"title":40},{"chapter":null,"citation_url":null,"part":70,"title":40},{"chapter":null,"citation_url":null,"part":71,"title":40}],"citation":"81 FR 35622","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This final rule is effective on August 2, 2016.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2013-0685","FRL-9946-55-OAR"],"dockets":[],"document_number":"2016-11968","effective_on":"2016-08-02","end_page":35634,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2016/06/03/2016-11968.xml","html_url":"https://www.federalregister.gov/documents/2016/06/03/2016-11968/source-determination-for-certain-emission-units-in-the-oil-and-natural-gas-sector","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2016-11968?publication_date=2016-06-03","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2016-06-03/2016-11968/mods.xml","not_received_for_publication":null,"page_length":13,"page_views":{"count":8719,"last_updated":"2026-09-22 16:15:06 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2016-06-03/pdf/2016-11968.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2016-11968.pdf?1464871534","publication_date":"2016-06-03","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2016/06/03/2016-11968.txt","regulation_id_number_info":{"2060-AS06":{"issue":"201604","html_url":"https://www.federalregister.gov/regulations/2060-AS06/source-determination-for-certain-emissions-units-in-the-oil-and-natural-gas-sector","title":"Source Determination for Certain Emissions Units in the Oil and Natural Gas Sector","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=201604&RIN=2060-AS06&operation=OPERATION_EXPORT_XML","priority_category":"Other Significant"}},"regulation_id_numbers":["2060-AS06"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Dictionary.com Definition of Adjacent","document_id":"EPA-HQ-OAR-2013-0685-0283"},{"title":"BP Treating Station #1 PSD Permit - Administrative record","document_id":"EPA-HQ-OAR-2013-0685-0282"},{"title":"Response to Comments on Source Determination","document_id":"EPA-HQ-OAR-2013-0685-0281"},{"title":"XTO Energy Wild Horse Bench Compressor Station Synthetic Minor NSR Permit","document_id":"EPA-HQ-OAR-2013-0685-0280"},{"title":"XTO Energy River Bend Unit 11-18F Compressor Station Synthetic Minor NSR Permit - Administrative Record","document_id":"EPA-HQ-OAR-2013-0685-0279"},{"title":"XTO Energy River Bend Unit 11-18F Compressor Station Synthetic Minor NSR Permit","document_id":"EPA-HQ-OAR-2013-0685-0278"},{"title":"Wind River North Hill Creek Compressor Station Title V Permit","document_id":"EPA-HQ-OAR-2013-0685-0277"},{"title":"BP Field Treating Site #7 PSD Permit Revision","document_id":"EPA-HQ-OAR-2013-0685-0276"},{"title":"Williams Four Corners Ignacio Gas Plant Title V Permit Renewal","document_id":"EPA-HQ-OAR-2013-0685-0275"},{"title":"Williams Four Corners Ignacio Gas Plant PSD Permit - Statement of Basis","document_id":"EPA-HQ-OAR-2013-0685-0274"}],"regulatory_plan":{"html_url":"https://www.federalregister.gov/regulations/2060-AS06/source-determination-for-certain-emissions-units-in-the-oil-and-natural-gas-sector","title":"Source Determination for Certain Emissions Units in the Oil and Natural Gas Sector"},"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-HQ-OAR-2013-0685","supporting_documents_count":90,"docket_id":"EPA-HQ-OAR-2013-0685","regulation_id_number":"2060-AS06","title":"PSD and NSR – Major Source Determination for Oil and Gas Extraction Facilities","checked_regulationsdotgov_at":"2016-06-23T06:00:13Z"},"regulations_dot_gov_url":null,"significant":true,"signing_date":null,"start_page":35622,"subtype":null,"title":"Source Determination for Certain Emission Units in the Oil and Natural Gas Sector","toc_doc":"Source Determination for Certain Emission Units in the Oil and Natural Gas Sector","toc_subject":null,"topics":["Air pollution control","Environmental protection","Incorporation by reference","Intergovernmental relations"],"type":"Rule","volume":81}