A 22-year-old E. Greenville, Montgomery County, man who was at the wheel of a Pontiac Sunbird early April 29 when it became airborne and landed upside-down in the Perkiomen Creek in Douglass Township, killing the passenger, was arrested Friday on charges of homicide by vehicle while under the influence.Howard Arthur Christy, II, of the 500 block of Blaker Drive, was driving without an operator’s license at the time of the accident on Paper Mill Road in Barto, said District Attorney Risa Vetri Ferman and Douglass Township Police Chief Barry L.