Environmental Protection Agency April 26, 2019 – Federal Register Recent Federal Regulation Documents

The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision submitted by the Commonwealth of Pennsylvania, on behalf of the Allegheny County Health Department (ACHD), on March 19, 2019. This revision seeks removal from the Pennsylvania SIP of Allegheny County requirements limiting summertime gasoline volatility to 7.8 pounds per square inch (psi) Reid Vapor Pressure (RVP), which were originally adopted to reduce ozone precursor pollution to address nonattainment of the 1-hour ozone national ambient air quality standard (NAAQS) in the Allegheny County portion of the Pittsburgh-Beavery Valley ozone nonattainment area (hereafter referred to as the Pittsburgh-Beaver Valley Area). In December 2018, EPA issued a final approval of the Pennsylvania Department of Environmental Protection's (PA DEP) request to remove from the SIP the PA DEP requirements limiting the summer RVP of gasoline in the Pittsburgh-Beaver Valley Area. As part of that action, EPA also approved the accompanying demonstration prepared by Pennsylvania that shows that the emission impacts from removal of the program will not interfere with the area's ability to attain or maintain any NAAQS. EPA is proposing that this prior approved noninterference demonstration also serves to support Pennsylvania's request to remove the separate program imposed by Allegheny County requiring summer 7.8 psi RVP gasoline and that removal of this substantially similar, local low-RVP program will not interfere with the area's ability to attain or maintain the NAAQS. This action is being taken under the Clean Air Act (CAA).