(Oregon City, OR)  --  A Portland police officer is facing multiple charges in connection with a crash during which he's accused of driving drunk.  The Clackamas County District Attorney's Office filed nine misdemeanor charges yesterday against officer Daniel Craig Chastain in regard to the April 25th crash in Happy Valley.  Court papers say Chastain unlawfully and knowingly operated a City of Portland-owned vehicle while under the influence of alcohol.  The driver of a Toyota pickup truck involved in the crash was injured.