Investigation of and response to a complaint shall be as follows:
Wash. Admin. Code § 392-168-155
Statutory Authority: RCW 28A.300.070. 05-19-033, § 392-168-155, filed 9/12/05, effective 10/13/05. Statutory Authority: RCW 34.05.220 [(1)](a). 89-23-001 (Order 15), § 392-168-155, filed 11/2/89, effective 12/3/89. Statutory Authority: RCW 28A.02.100. 88-09-042 (Order 88-13), § 392-168-155, filed 4/18/88.