Manning was 49, according to the Snohomish County Medical Examiner's Office.
His death remains under investigation by the medical examiner's office and the Washington State Patrol.
He died about 4 a.m. June 26 after his Ford Explorer struck a power pole on Highway 530, east of Arlington.
Troopers said his vehicle failed to make a curve and went off the roadway, striking the power pole.
More Local News Headlines
Three weeks out, only four 911 texts have been valid County deputy director named president of state engineers association Accident victim has endured, thanks to his family, police officer Crews try to save man pulled from Stillaguamish River State’s oldest full-time worker on the job at EdCC Lord Hill levee repairs to start July 29 Less than a week before election, only 9.1 percent of ballots returned Red Cross on the lookout for heroes
Our new comment system is not supported in IE 7. Please upgrade your browser here.