This week’s The E15 Expressway: Web Chats with Retailers features Mike Lorenz, Executive Vice President of Petroleum Supply at Sheetz Inc. Sheetz is a family-owned and operated convenience store chain with 620 stores across Pennsylvania, Virginia, Ohio, Maryland, West Virginia, and North Carolina. Sheetz started selling Unleaded 88 (E15) in 2015 through a partnership with Prime the Pump.