NEW ORLEANS - A construction contract is ambiguous as to whether a building owner or its contractor was responsible for purchasing property insurance to cover Hurricane Katrina damage to renovation work, the Fifth Circuit U.S. Court of Appeals ruled June 6, vacating and remanding a lower court's ruling that the building owner bore the duty (WH Holdings, L.L.C., et al. v. ACE American Insurance Company, No. 10-31091, 5th Cir.; 2012 U.S. App. LEXIS 11410).