# Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; Section 110(a)(1) 8-Hour Ozone Maintenance Plan and 2002 Base-Year Inventory for the Columbia County Area
> **Rule** · Final rule. · Published 2008-07-02 · Effective 2008-08-01 · 73 FR 37840
## Document
- **Document number:** E8-14869
- **Category:** air-emissions
- **Federal Register citation:** 73 FR 37840
- **CFR reference:** 40 CFR 52
- **Publication date:** 2008-07-02
- **Effective date:** 2008-08-01
- **State:** PA
- **EPA docket:** EPA-R03-OAR-2008-0178
## Abstract

EPA is approving a State Implementation Plan (SIP) revision submitted by the Commonwealth of Pennsylvania. The Pennsylvania Department of Environmental Protection (PADEP) submitted a SIP revision consisting of a maintenance plan that provides for continued attainment of the 8-hour ozone national ambient air quality standard (NAAQS) for at least 10 years after the April 30, 2004 designations, as well as a 2002 base-year inventory for the Columbia County Area. EPA is approving the maintenance plan and the 2002 base-year inventory for the Columbia County Area as revisions to the Pennsylvania SIP in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2008/07/02/E8-14869/approval-and-promulgation-of-air-quality-implementation-plans-pennsylvania-section-110a1-8-hour)
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