Nonassociated student body private moneys shall be disbursed subject to the following conditions:

(1) If such funds are held in trust within the associated student body fund, they shall be budgeted pursuant to WAC 392-138-013 (1)(d). No disbursements shall be made except as provided for in the budget approved pursuant to WAC 392-138-110. All disbursements shall have the prior written approval of the associated student body or such other authority designated in school district or charter school policy or procedures;

(2) If such funds are held in a trust fund, they are not budgeted. Disbursements shall occur only upon presentation of properly prepared vouchers in such format and design as the central district office shall prescribe, and as provided for in subsection (3) of this section;

(3) Vouchers authorizing disbursements shall be accompanied by written evidence of approval of disbursement by the associated student body or other authority designated in the school district's or charter school's policies and procedures;

(4) Disbursements shall be made only for the intended purposes pursuant to WAC 392-138-200.