Energy & environment · 10/12/2004Updated: 10/17/2026 · 1 min read

EPA Approves Pennsylvania's Revised Air Quality Plan for Pittsburgh Area

The Environmental Protection Agency (EPA) has approved a revised State Implementation Plan (SIP) submitted by the Commonwealth of Pennsylvania to maintain the 1-hour ozone national ambient air quality standard in the Pittsburgh-Beaver Valley area, reflecting the use of the MOBILE6 model for volatile organic compounds and nitrogen oxides motor vehicle emission budgets.