Texarkana, Texas-based E-Z Mart Stores Inc. is expanding its convenience offering in Arkansas. On Dec. 1, E-Z Mart began operating eight more stores acquired from B-B-F Oil Co., bringing E-Z Mart’s store count to 306. The new locations in Arkansas are located in Pine Bluff, Hot Springs, Benton and Sheridan. “The acquisition of B-B-F Oil…