TRI-CITIES, Wash.-Circle K is fueling 4th of July fun with a 40 cents per gallon discount from 4 p.m. to 7 p.m. on Tuesday, July 2. Stations in Yakima and the Tri-Cities are some of the 230 Circle K locations across California, Oregon and Washington holding Fuel Day Pop-Ups, where drivers can get the discount at the pump before hitting the road for the 4th.