Federal Register - "Air Quality State Implementation Plans; Approval and Promulgation of Implementation Plans; South Dakota; Infrastructure Requirements for the 2015 Ozone National Ambient Air Quality Standards; Revisions to Administrative Rules"

Title: Air Quality State Implementation Plans; Approval and Promulgation of Implementation Plans; South Dakota; Infrastructure Requirements for the 2015 Ozone National Ambient Air Quality Standards; Revisions to Administrative Rules Source: Federal Register Data/Action: Environmental Protection Agency (Final Rule) Date: 10/26/2020 Text Preview: ...ENVIRONMENTAL PROTECTION AGENCY 40 CFR Part 52 [EPA-R08-OAR-2019-0642; FRL-10014-86-Region 8] Air Quality State Implementation Plans; Approval and Promulgation of Implementation Plans; South Dakota; Infrastructure Requirements for the 2015 Ozone National Ambient Air Quality Standards; Revisions to Administrative Rules AGENCY: Environmental Protection Agency (EPA). ACTION: Final rule. ----------------------------------------------------------------------- SUMMARY: The Environmental Protection Agency (EPA)... ...EPA is taking this action pursuant to the Clean Air Act (CAA). DATES: This rule is effective on November 25, 2020. ADDRESSES: The EPA has established a docket for this action under Docket ID No. EPA-R08-OAR-2019-0642... ...EPA, Region 8, Mail-code 8ARD-QP, 1595 Wynkoop Street, Denver, Colorado 80202-1129. SUPPLEMENTARY INFORMATION: Throughout this document ``we,'' ``us,'' and ``our'' means the EPA. I. Background On March 12, 2008, the EPA promulgated a new NAAQS for ozone, revising the levels of primary and secondary 8-hour ozone standards from 0.08 parts per million (ppm) to 0.075 ppm (73 FR 16436). More recently, on October 1, 2015, the EPA...