(May 11, 2016, 2:10 PM EDT) -- PORTLAND, Ore. — An Oregon federal magistrate judge on May 6 determined that the proper allocation method for calculating insureds’ defense costs is a pro rata by time on the risk method and said that the insurers are required to pay their portion of the defense costs owed to the insureds for underlying environmental contamination claims within 30 days (Century Indemnity Co. v. The Marine Group LLC, et al., No. 08-1375, D. Ore.; 2016 U.S. Dist. LEXIS 60339)....