Mealey's (November 20, 2017, 1:04 PM EST) -- WASHINGTON, D.C. — The Environmental Protection Agency must respond to Sierra Club’s petition asking the agency to object to a proposed operating permit for a power plant in Tennessee by Jan. 31, a federal judge in the District of Columbia ruled Nov. 17 in granting the group’s motion for summary judgment (Sierra Club v. Scott Pruitt, No. 17-906, D. D.C., 2017 U.S. Dist. LEXIS 190374)....