(Centerville, IA) -- Centerville's Howar Middle School Principal is facing an OWI charge. Police in Centerville responded to a two-car crash Sunday night at East Bank and 18th Streets. Karen Swanson, Howar's principal, was said to have slurred speech and an odor of alcohol according to police. She recorded a blood alcohol level of .165, about double the legal limit. Superintendent Tom Rubel says he is aware of the accident and Swanson's arrest.