Douglas County commissioners, indignant over the surprise appearance of an 880-foot median along Highway 395 in advance of a new Walmart superstore, refused Thursday to prohibit left turns from Service Drive onto the highway.Their decision not to approve the resolution followed a similar action Tuesday by Gardnerville Town Board members.At issue is the median along Highway 395 to create a stacking lane for a new intersection at Grant Avenue that will serve as the entrance to the store and provide an alternate route to Service Drive.Business owners, already facing the challenge of operating in the neighborhood of the 152,373-square-foot superstore, …