# Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; Revisions to the Air Resource Regulations
> **Rule** · Direct final rule. · Published 2003-02-25 · Effective 2003-04-28 · 68 FR 8723
## Document
- **Document number:** 03-4256
- **Category:** air-emissions
- **Federal Register citation:** 68 FR 8723
- **CFR reference:** 40 CFR 52
- **Publication date:** 2003-02-25
- **Effective date:** 2003-04-28
- **State:** PA
- **EPA docket:** PA159-4201a
## Abstract

EPA is taking direct final action to approve a revision to the Pennsylvania State Implementation Plan (SIP) submitted by the Pennsylvania Department of Environmental Protection (PADEP). The revision changes portions of Pennsylvania's air resource regulations. Specifically, today's action approves revised definitions related to "major modification," "modification," "potential to emit," "responsible official" and "secondary emissions" as conforming to the Federal definitions of these terms. The changes will make Pennsylvania's regulations consistent with Federal requirements. EPA is approving this revision in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/02/25/03-4256/approval-and-promulgation-of-air-quality-implementation-plans-pennsylvania-revisions-to-the-air)
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