(March 31, 2017, 3:35 PM EDT) -- RIVERSIDE, Calif. — A noncumulation clause included in three umbrella policies operates as an anti-stacking provision, preventing the insured from stacking the three policies’ $9 million limits to cover costs for a landfill cleanup, a California federal judge said March 8 (The Insurance Company of the State of Pennsylvania v. County of San Bernardino, No. 16-0128, C.D. Calif., 2017 U.S. Dist. LEXIS 45031)....