(January 19, 2016, 2:30 PM EST) -- SAN FRANCISCO — A California federal magistrate judge on Jan. 14 granted in part and denied in part motions to exclude testimony from expert witnesses on responsive actions needed following a power outage at a refinery (Tesoro Refining & Marketing Company LLC v. Pacific Gas and Electric Co., No. 14-00930, N.D. Calif.; 2016 U.S. Dist. LEXIS 5030)....