The purpose of RCW
43.20B.410 through
43.20B.455 is to place financial responsibility for cost of care, support and treatment upon those residents of residential habilitation centers operated under chapter
71A.20 RCW who possess assets over and above the minimal amount required to be retained for personal use; to provide procedures for establishing such liability and the monthly rate thereof, and the process for appeal therefrom to the secretary of social and health services and the courts by any person deemed aggrieved thereby.