Mealey's (April 2, 2020, 12:50 PM EDT) -- CHICAGO — A professional services exclusion does not relieve an insurer of its duty to defend allegations that an insured’s excavation work on ultraviolet disinfection facilities caused the collapse of an embankment supporting tracks for a line on the Chicago Transit Authority (CTA), an Illinois federal judge ruled March 27 (Collins Engineers, Inc. v. Travelers Property Casualty Company of America, No. 19-1203, N.D. Ill., 2020 U.S. Dist. LEXIS 53469)....