(May 3, 2017, 1:20 PM EDT) -- PITTSBURGH — A Pennsylvania municipality on April 19 filed a brief in federal court arguing that an environmental group should not be permitted to intervene in a lawsuit pertaining to underground injection control (UIC) wells for hydraulic fracturing waste because the parties have already briefed the issues in the case and Pennsylvania law does not provide the group with the right to intervene (Seneca Resources Corporation v. Highland Township, et al., No. 16-289, W.D. Pa.)....