RCW 36.28.020: Powers of deputies.

Persons may be deputed by the sheriff in writing to conduct service of process in civil or criminal cases, and the sheriff shall be responsible on the sheriff's official bond for their default or misconduct. The use of such persons shall be limited to functions and actions not involving use of law enforcement authority or carrying of firearms or other weapons unless such persons are certified as peace officers under chapter 43.101 RCW.