WILLISTON On Sept. 26, at 2:14 a.m. Vermont State Police in Williston dispatch was advised of a single vehicle rollover accident with entrapment in the area adjacent to the Interstate-89 South on-ramp at exit 14. A member of the VSP, as well as representatives from the South Burlington Fire Department, responded to the scene. After approximately 45 minutes the operator, later identified as Christopher Sanford, age 37, of Winooski, was extricated from the vehicle and transported to Fletcher Allen. Due to the injuries sustained, Sanford was processed for DUI at the hospital and subsequently issued a citation to appear in Chittenden District Court on Oct. 16 for DUI-refusal. Although the accident is still under investigation, both speed and alcohol are believed to be contributing factors.