# Air Plan Approval and Designation of Areas; FL; Redesignation of the Hillsborough County 2010 1-Hour Sulfur Dioxide Nonattainment Area to Attainment
> **Rule** · Final rule. · Published 2019-11-12 · Effective 2019-12-12 · 84 FR 60927
## Document
- **Document number:** 2019-23375
- **Category:** air-emissions
- **Federal Register citation:** 84 FR 60927
- **CFR reference:** 40 CFR 52
- **Publication date:** 2019-11-12
- **Effective date:** 2019-12-12
- **EPA docket:** EPA-R04-OAR-2018-0552
## Abstract

In a letter dated June 7, 2018, the State of Florida, through the Florida Department of Environmental Protection (FDEP), submitted a request for the Environmental Protection Agency (EPA) to redesignate the Hillsborough County sulfur dioxide (SO<INF>2</INF>) nonattainment area (hereinafter referred to as the "Hillsborough County Area" or "Area") to attainment for the 2010 1- hour SO<INF>2</INF> primary national ambient air quality standard (NAAQS) and to approve an accompanying state implementation plan (SIP) revision containing a maintenance plan for the Area. Through a letter dated April 16, 2019, FDEP submitted a revision to the June 7, 2018, redesignation request and SIP revision asking EPA to incorporate certain conditions into the SIP from a recent permit revision applicable to the Tampa Electric Company--Big Bend Station (Big Bend) power plant. EPA is taking final action: To determine that the Hillsborough County Area attained the 2010 1-hour SO<INF>2</INF> NAAQS by its applicable attainment date of October 4, 2018; to approve the SIP revision containing the State's plan for maintaining attainment of the 2010 1-hour SO<INF>2</INF> standard and to incorporate the maintenance plan into the SIP; to redesignate the Hillsborough County Area to attainment for the 2010 1-hour SO<INF>2</INF> NAAQS; and to incorporate into the SIP certain permitting conditions applicable to Big Bend, including a condition that lowers the SO<INF>2</INF> emissions cap and a condition that restricts fuel use at two electric generating units to natural gas.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/11/12/2019-23375/air-plan-approval-and-designation-of-areas-fl-redesignation-of-the-hillsborough-county-2010-1-hour)
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