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EPA/OAR | RIN: 2060-AU61 | Publication ID: Spring 2020 |
Title: Air Quality Designations for 2010 SO2 NAAQS--Round 4 | |
Abstract:
On June 2, 2010, the EPA established a revised primary SO2 National Ambient Air Quality Standards (NAAQS) at 75 ppb, which is met at a monitoring site when the 3-year average of the 99th percentile of daily maximum 1-hour concentrations does not exceed 75 ppb (75 FR 35520; June 22, 2010). On August 5, 2013, the EPA published a notice announcing designations of 29 areas in 16 states as nonattainment for the 2010 primary SO2 standard (Round 1), based on certified ambient air quality monitoring data (78 FR 47191). However, at that time, the EPA was not yet prepared to issue designations for the remaining areas of the country. Subsequently, three lawsuits were filed against the EPA in different U.S. District Courts alleging that the agency had failed to perform a nondiscretionary duty under the CAA by not designating all portions of the country by the 6/3/13, deadline. Under a consent decree entered by the Court on 3/2/15, in one of those cases, the EPA is required to complete the remaining area designations according to a specific schedule with the following deadlines: 7/2/16 (Round 2); 12/31/17 (Round 3) and 12/31/2020 (Round 4).The schedule for completing the remaining designations overlaps with submission of SO2 air quality information by states to the EPA under the SO2 Data Requirements Rule (DRR). This information may be used by the EPA in evaluating areas' air quality in relation to the 2010 SO2 primary NAAQS, including designations and redesignations (80 FR 51052; 8/21/15). This is the fourth and final action for the 2010 SO2 NAAQS designations. By the 12/31/2020, court-ordered deadline, the EPA is required to designate all remaining areas of the United States, specifically those areas that, pursuant to the DRR, began operating a new EPA-approved monitoring network. |
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Agency: Environmental Protection Agency(EPA) | Priority: Substantive, Nonsignificant |
RIN Status: Previously published in the Unified Agenda | Agenda Stage of Rulemaking: Prerule Stage |
Major: No | Unfunded Mandates: No |
EO 13771 Designation: Not subject to, not significant | |
CFR Citation: 40 CFR Part 81 (To search for a specific CFR, visit the Code of Federal Regulations.) | |
Legal Authority: 42 U.S.C. 7401 et seq. |
Legal Deadline:
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Overall Description of Deadline: Court-Ordered |
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Timetable:
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Regulatory Flexibility Analysis Required: No | Government Levels Affected: Federal, Local, State |
Small Entities Affected: No | Federalism: No |
Included in the Regulatory Plan: No | |
RIN Data Printed in the FR: No | |
Agency Contact: Corey Mocka Environmental Protection Agency Office of Air and Radiation 109 T.W. Alexander Drive, Mail Code C539-01, Research Triangle Park, NC 27709 Phone:919 541-5142 Email: mocka.corey@epa.gov |