In a November 3 decision, the Texas Railroad Commission agreed with an administrative law judge that two wastewater injection wells, one operated by EnerVest Operating LLC and the other by Exxon Mobil Corp. subsidiary XTO Energy Inc., did not cause a series of earthquakes near the towns of Reno and Azle from late 2013 through spring of 2014. The Commissioners' unanimous decision found there was not enough evidence to link the wells to the seismic activity, and determined that the companies should be allowed to maintain their well permits.