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Tammy Hayes is an experienced professional with a total of 43 years of service within NiSource/Columbia Gas. Currently serving as the COH Compliance Administrator at Columbia Gas of Ohio, Inc. since May 2015, Tammy oversees the COH Cross Bore Program. Prior to this role, Tammy worked as an HR Administrative Assistant at NiSource from July 2008 to May 2015, where responsibilities included supporting HR Consultants and managing onboarding for new hires, as well as participating in the NGD I&D Project. Tammy's extensive background at Columbia Gas of Ohio from February 1980 to July 2008 includes roles as an Administrative Assistant across various departments such as Engineering, Regulatory Compliance, and Technical Operations. Tammy pursued education at Columbus Business University from 1978 to 1979.