Two citizen reports Thursday helped Vancouver police recover a stolen car and arrest its driver, police said.Vancouver police Cpl. Duane Boynton said the case began at 2:33 p.m. when emergency dispatchers received a call about a possible intoxicated driver near 15th Avenue. A check of the license plate found that the car — a brown Toyota Corolla — was stolen.Officers checked the area and couldn’t locate the car, but got another lead at 2:59 p.m., when Randy Scrivner, a code enforcement officer who had heard the earlier radio traffic, called dispatchers and told them he was behind the car on 39th Street near Leverich Park, Boynton said.Boynton arrived and pulled behind the car — only to see its driver pull over and flee down a freeway onramp before jumping a retaining wall into a neighborhood. Boynton pursued on foot. Police set up a perimeter around the neighborhood and an officer detained a man who was trying to leave the area. Boynton identified the man as the Corolla’s driver and took him into custody. Michael J. Treadway, 41, no known address, was booked on suspicion of possession of a stolen vehicle, possession of methamphetamine, obstruction and driving while suspended.