A 17-year-old boy was crossing Hazel Dell Avenue near 102nd Thursday night at 10:15 p.m. when he was hit by a car.  He is hospitalized and his injuries are non-life threatening.   The driver didn't stop.  Police began searching the area and found a car matching the description of the suspect's vehicle in a driveway.  Police arrested 22-year-old Shawn Ham, of Vancouver. Police say alcohol may have been a factor in the crash.