# Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; Philadelphia County Reasonably Available Control Technology Under the 1997 8-Hour Ozone National Ambient Air Quality Standard
> **Rule** · Final rule. · Published 2013-12-13 · Effective 2014-01-13 · 78 FR 75902
## Document
- **Document number:** 2013-29588
- **Category:** air-emissions
- **Federal Register citation:** 78 FR 75902
- **CFR reference:** 40 CFR 52
- **Publication date:** 2013-12-13
- **Effective date:** 2014-01-13
- **State:** PA
- **EPA docket:** EPA-R03-OAR-2008-0603
## Abstract

The Environmental Protection Agency (EPA) is conditionally approving two State Implementation Plan (SIP) revisions for the Commonwealth of Pennsylvania. The SIP revisions consist of a demonstration that Philadelphia County is meeting the requirements of reasonably available control technology (RACT) of the Clean Air Act (CAA) for nitrogen oxides (NO<INF>X</INF>) and volatile organic compounds (VOC) under the 1997 8-hour ozone national ambient air quality standard (NAAQS). EPA's conditional approval of Philadelphia County's 1997 8-hour ozone RACT demonstration is based on Philadelphia County's commitment to submit additional SIP revisions addressing source-specific RACT controls for major sources of VOC and NO<INF>X</INF> in the County. This action is being taken under the CAA.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/12/13/2013-29588/approval-and-promulgation-of-air-quality-implementation-plans-pennsylvania-philadelphia-county)
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