In May of 2016, environmental groups sued the U.S. E.P.A., alleging that the agency failed to review and revise its regulations and state waste management plan guidelines regarding waste materials from oil and gas production as required by the Resource Conservation and Recovery Act, 42 U.S.C. ยง 6901 et seq. On December 28, 2016, the court approved a consent decree between the parties that requires the agency to review its existing regulations and guidelines, and by March 15, 2019, propose revisions to these items or determine that such revisions are unnecessary.
Read the consent decree here.