In 2016, the Sierra Club filed suit in Oklahoma alleging that use of state-permitted deep wastewater injection wells was causing increased seismic activity—both in frequency and severity. Sierra Club v. Chesapeake Operating, LLC, et al., Case No. CIV-16-134-F, United States District Court for the Western District of Oklahoma.
In an April 4, 2017 Order the court dismissed the case, declining to exercise jurisdiction because doing so would interfere with the state regulators’ efforts to address the alleged increased seismic activity from wastewater injection. Continue reading