On June 9, 2023, EPA referred a civil judicial action under the CAA to the DOJ against PennEnergy Resources LLC (?PennEnergy?) for violations of Sections 111(e) and 502(a) of the Act, and the Standards of Performance for Crude Oil and Natural Gas Facilities set forth at 40 C.F.R. Part 60, subparts OOOO and OOOOa (NSPS OOOO/OOOOa), at 34 of its natural gas production facilities located in Butler, Beaver and Lawrence Counties, Pennsylvania. PennEnergy is a privately-owned oil and gas company headquartered in Pittsburgh, PA, with natural gas extraction and production operations consisting of approximately 370 wells at 107 oil and gas facilities in western PA and Ohio. The referral requests DOJ?s assistance in seeking an appropriate civil penalty and injunctive relief from the company, including, but not limited to, requiring PennEnergy to conduct design evaluations, modeling, third-party verification, modifications of facilities, additional monitoring, and updated operation and maintenance programs at its facilities, which EPA estimates would result in VOC emissions reductions of hundreds of TPY. PADEP has expressed interest in joining this matter as a co-plaintiff. Based on the EJSCREEN analysis for each of the 34 facilities, no environmental justice concerns were found.