{"abstract":"The Environmental Protection Agency (EPA) is proposing to approve the Idaho regional haze State Implementation Plan (SIP) revision submitted on August 5, 2022, and supplemented on May 8, 2024. Idaho submitted the SIP revision to address the requirement to make reasonable progress toward the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility in certain national parks and wilderness areas.","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/2025/03/24/2025-04906.html","cfr_references":[{"chapter":null,"citation_url":null,"part":52,"title":40}],"citation":"90 FR 13516","comment_url":null,"comments_close_on":"2025-04-23","correction_of":null,"corrections":[],"dates":"Written comments must be received on or before April 23, 2025.","disposition_notes":null,"docket_ids":["EPA-R10-OAR 2024-0545","FRL-11879-01-R10"],"dockets":[{"supporting_documents":[{"title":"202_EPA_Technical_Guidance_Tracking_Visibility_Progress_12_20_2018","document_id":"EPA-R10-OAR-2024-0545-0075"},{"title":"201_EPA_Clarifications_Memo_Regional_Haze_7_8_2021","document_id":"EPA-R10-OAR-2024-0545-0071"},{"title":"105_Idaho_2022_Submission_Regional_Haze_Appendix_D_Emission_Unit_Selection_8_8_22","document_id":"EPA-R10-OAR-2024-0545-0068"},{"title":"203_EPA_Comment_Letter_Idaho_Draft_2022_Plan_7_21_2022","document_id":"EPA-R10-OAR-2024-0545-0065"},{"title":"119_Idaho_2024_Supplement_Appdx_J3_SIMPLOT_DON_SIDING_T1-2017.0024_Permit","document_id":"EPA-R10-OAR-2024-0545-0064"},{"title":"403_EPA_Consultation_Offer_Letter_Shoshone_Bannock_Tribes_7_13_2022","document_id":"EPA-R10-OAR-2024-0545-0059"},{"title":"402_EPA_Consultation_Offer_Letter_Nez_Perce_Tribe_7_13_2022","document_id":"EPA-R10-OAR-2024-0545-0056"},{"title":"200_EPA_Guidance_Regional_Haze_8_20_2019","document_id":"EPA-R10-OAR-2024-0545-0046"},{"title":"104_Idaho_2022_Submission_Regional_Haze_Appendix_C_Consultation_Dates_8_8_22","document_id":"EPA-R10-OAR-2024-0545-0040"},{"title":"117_Idaho_2024_Supplement_Appdx_J1_CLEARWATER_T1-2020.0024_Permit","document_id":"EPA-R10-OAR-2024-0545-0037"}],"agency_name":"EPA","documents":[{"comment_count":6,"comment_start_date":"2025-03-24","updated_at":"2025-05-09T01:56:39.746-04:00","comment_url":"https://www.regulations.gov/commenton/EPA-R10-OAR-2024-0545-0001","allow_late_comments":false,"id":"EPA-R10-OAR-2024-0545-0001","comment_end_date":"2025-04-24","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":77,"id":"EPA-R10-OAR-2024-0545","title":"Air Plan Approval; ID; Regional Haze Plan for the Second Implementation Period"}],"document_number":"2025-04906","effective_on":null,"end_page":13549,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2025/03/24/2025-04906.xml","html_url":"https://www.federalregister.gov/documents/2025/03/24/2025-04906/air-plan-approval-id-regional-haze-plan-for-the-second-implementation-period","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2025-04906?publication_date=2025-03-24","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2025-03-24/2025-04906/mods.xml","not_received_for_publication":null,"page_length":34,"page_views":{"count":465,"last_updated":"2026-04-04 22:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2025-03-24/pdf/2025-04906.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2025-04906.pdf?1742561119","publication_date":"2025-03-24","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2025/03/24/2025-04906.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{"supporting_documents":[{"title":"202_EPA_Technical_Guidance_Tracking_Visibility_Progress_12_20_2018","document_id":"EPA-R10-OAR-2024-0545-0075"},{"title":"201_EPA_Clarifications_Memo_Regional_Haze_7_8_2021","document_id":"EPA-R10-OAR-2024-0545-0071"},{"title":"105_Idaho_2022_Submission_Regional_Haze_Appendix_D_Emission_Unit_Selection_8_8_22","document_id":"EPA-R10-OAR-2024-0545-0068"},{"title":"203_EPA_Comment_Letter_Idaho_Draft_2022_Plan_7_21_2022","document_id":"EPA-R10-OAR-2024-0545-0065"},{"title":"119_Idaho_2024_Supplement_Appdx_J3_SIMPLOT_DON_SIDING_T1-2017.0024_Permit","document_id":"EPA-R10-OAR-2024-0545-0064"},{"title":"403_EPA_Consultation_Offer_Letter_Shoshone_Bannock_Tribes_7_13_2022","document_id":"EPA-R10-OAR-2024-0545-0059"},{"title":"402_EPA_Consultation_Offer_Letter_Nez_Perce_Tribe_7_13_2022","document_id":"EPA-R10-OAR-2024-0545-0056"},{"title":"200_EPA_Guidance_Regional_Haze_8_20_2019","document_id":"EPA-R10-OAR-2024-0545-0046"},{"title":"104_Idaho_2022_Submission_Regional_Haze_Appendix_C_Consultation_Dates_8_8_22","document_id":"EPA-R10-OAR-2024-0545-0040"},{"title":"117_Idaho_2024_Supplement_Appdx_J1_CLEARWATER_T1-2020.0024_Permit","document_id":"EPA-R10-OAR-2024-0545-0037"}],"comments_count":6,"agency_id":"EPA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=EPA-R10-OAR-2024-0545","supporting_documents_count":75,"docket_id":"EPA-R10-OAR-2024-0545","document_id":"EPA-R10-OAR-2024-0545-0001","regulation_id_number":null,"title":"Air Plan Approval; ID; Regional Haze Plan for the Second Implementation Period","checked_regulationsdotgov_at":"2025-05-10T00:55:03Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":13516,"subtype":null,"title":"Air Plan Approval; ID; Regional Haze Plan for the Second Implementation Period","toc_doc":"Idaho; Regional Haze Plan for the Second Implementation Period","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","Sulfur oxides","Volatile organic compounds"],"type":"Proposed Rule","volume":90}