RCW 71.05.458

As soon as possible, but no later than 24 hours from receiving a referral from a law enforcement officer or law enforcement agency, including a tribal law enforcement officer or tribal law enforcement agency, excluding Saturdays, Sundays, and holidays, a mental health professional contacted by the designated crisis responder agency must attempt to contact the referred person to determine whether additional mental health intervention is necessary, including, if needed, an assessment by a designated crisis responder for initial detention under RCW 71.05.150 or 71.05.153. Documentation of the mental health professional's attempt to contact and assess the person must be maintained by the designated crisis responder agency.