Spots on the back make me think Thamnophis elegans vagrans(Western terrestrial)
possibly. Check out the last photo on this link.
http://www.bentler.us/eastern-washin...ter-snake.aspx
Don't think it's T.s.sirtalis(Eastern) of T.ordinoides(Northwestern)

Will be interesting finding out. Yet another albino found in WA.
Very cool there William. Take good care it.