Omaha, NE, and Sioux City, IA , 2016-Sep-23 — /EPR Retail News/ — Kum & Go will offer E-15 fuel for $1.15 per gallon at several Omaha and Sioux City-area Kum & Go locations from 6 a.m. to 6 p.m. on Friday, September 23. E-15, a fuel blended with 15 percent ethanol and 85 percent gasoline,…