Upon the expiration of three years from the date of the accident resulting in the security requirement, any security remaining on deposit shall be returned to the person who made such deposit or to his or her personal representative if an affidavit or other evidence satisfactory to the department has been filed with it:
The foregoing provisions of this section shall not be construed to limit the return of any deposit of security under any other provision of this chapter authorizing such return.
RCW 46.29.230