Mealey's (March 22, 2018, 8:09 AM EDT) -- FRESNO, Calif. — An umbrella liability insurer has no duty to defend its insured against an underlying suit seeking environmental contamination cleanup costs because the policy’s pollution exclusion clearly bars coverage for cleanup costs, a California federal judge said March 19 (RLI Insurance Co. v. Visalia, No. 17-1205, E.D. Calif., 2018 U.S. Dist. LEXIS 44742)....