# Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; 15 Percent Plan and 1990 VOC Emission Inventory for the Pittsburgh-Beaver Valley Area
> **Rule** · Final rule. · Published 1998-01-14 · Effective 1998-02-13 · 63 FR 2147
## Document
- **Document number:** 98-930
- **Category:** air-emissions
- **Federal Register citation:** 63 FR 2147
- **CFR reference:** 40 CFR 52
- **Publication date:** 1998-01-14
- **Effective date:** 1998-02-13
- **State:** PA
- **EPA docket:** PA 098-4055
## Abstract

EPA is granting conditional interim approval of the State Implementation Plan (SIP) revision submitted by the Commonwealth of Pennsylvania, for the Pittsburgh-Beaver Valley moderate ozone nonattainment area (the Pittsburgh area), to meet the 15 percent rate- of-progress (the 15% plan), requirements of the Clean Air Act. EPA is granting conditional interim approval because the 15% plan submitted by Pennsylvania for the Pittsburgh area relies on an enhanced motor vehicle inspection and maintenance (I/M) program, for which EPA has granted conditional interim approval. Conditional approval is also merited because EPA is granting conditional approval to the 1990 base year emissions inventory, upon which the 15% plan is dependent. Finally, EPA is conditionally approving the Pittsburgh 1990 (VOC) emission inventory, to allow Pennsylvania up to one year to supply accurate information for certain stationary emissions sources.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/01/14/98-930/approval-and-promulgation-of-air-quality-implementation-plans-pennsylvania-15-percent-plan-and-1990)
---
*AI Analytics · CC0 1.0*