Gregg Duffy, Superintendent
Gregg has worked in the sewer and water business since 1986. In 1989, he started at Carnwath Excavating Company as a laborer, then pipe layer, operator and foreman. Gregg has over 33 years of experience, specializing in site utilities and is an expert in his field of work. Gregg is currently a foreman for the utility operations of the company. Gregg is a valued employee that exemplifies Carnwath Excavating Company’s mission.