On July 15, 2025, EPA Region 3 entered into a Consent Agreement and Final Order with Xpress Natural Gas, LLC ( XNG ), the owner and operator of a natural gas tank filling facility located at 3814 North Road, Montrose, Pennsylvania ( Facility ).
The Facility is subject to both 40 C.F.R. Part 60 Subpart JJJJ, Standards of Performance for Stationary Spark Ignition Internal Combustion Engines ( Subpart JJJJ ) and 40 C.F.R. Part 63 Subpart ZZZZ, National Emission Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal Combustion Engines ( Subpart ZZZZ ). The EPA obtained information as part of its investigation showing that XNG had not completed initial or subsequence performance tests on two 2015 spark ignition internal combustion engines at the Facility in violation of NSPS Subpart JJJJ and NESHAP Subpart ZZZZ regulations.
The parties had previously entered into an Administrative Order on Consent ( Order ) on November 14, 2023, pursuant to Section 113(a) of the CAA, 42 U.S.C. 7413(a)(3). The Order required XNG to submit a testing protocol to the EPA, conduct testing in accordance with the approved protocol, and to submit a final report of the testing results. After several failed attempts at performance testing, Respondent completed performance tests on both engines on June 12-13, 2024. On November 12, 2024, the EPA determined that testing demonstrated compliance with 40 C.F.R. Part 60, Subpart JJJJ and the Order. The Order was terminated on November