# Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; Commercial Fuel Oil Sulfur Limits for Combustion Units in Philadelphia County
> **Rule** · Final rule. · Published 2019-05-31 · Effective 2019-07-01 · 84 FR 25178
## Document
- **Document number:** 2019-11171
- **Category:** air-emissions
- **Federal Register citation:** 84 FR 25178
- **CFR reference:** 40 CFR 52
- **Publication date:** 2019-05-31
- **Effective date:** 2019-07-01
- **State:** PA
- **EPA docket:** EPA-R03-OAR-2018-0722
## Abstract

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the Commonwealth of Pennsylvania (Pennsylvania). The revision updates Philadelphia County's portion of the Pennsylvania SIP, which includes regulations concerning sulfur content in fuel oil. Implementation of these provisions will reduce the amount of sulfur in fuel oils used in combustion units in Philadelphia County. EPA is approving these 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/2019/05/31/2019-11171/approval-and-promulgation-of-air-quality-implementation-plans-pennsylvania-commercial-fuel-oil)
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