Mealey's (May 2, 2016, 2:27 PM EDT) -- SAN FRANCISCO — The Ninth Circuit U.S. Court of Appeals is scheduled to hear oral arguments May 2 in a suit in which an insurer contends that an Oregon federal judge incorrectly ruled that a notice letter from the U.S. Environmental Protection Agency related to the insured’s liability for a Superfund site constitutes a suit under the insured’s policies (Ash Grove Cement Co. v. Liberty Mutual Insurance Co., et al., Nos. 13-35900, 13-35905, 14-35298; 9th Cir.)....