A 22-year-old South Dundas man is facing multiple charges related to being impaired while behind the wheel after a single vehicle collision. The OPP says officers stopped a vehicle on County Road 31 and noticed damage to it. Officers found out that the driver had been drinking and was involved in a collision on County Road 18. The man is charged with driving while impaired and driving with more than 80 milligrams of blood alcohol. He was also charged for failing to remain at the scene of a collision.