Energy Insurance Mutual Limited v. Ace American Insurance Company, 14 Cal.App.5th 281 (2017); First Appellate District Court of Appeal, Division Four, Case No. A140656 (July 11, 2017). In Energy Insurance Mutual Limited v. Ace American Insurance Company, the California Court of Appeal held that a “professional services” exclusion applied to bar coverage for claims made against an oil pipeline owner, Kinder Morgan, and its temporary staffing agency, Comforce, following an explosion at a construction site. Kinder Morgan had hired two temporary employees from Comforce to work as construction inspectors on a water supply line project. As a result of Kinder Morgan’s alleged failure to properly mark the oil pipeline, an excavator punctured a high-pressured petroleum line and caused the explosion.