(1) The procedure for the collection of the tax shall be in accordance with the existing laws of the state of Montana.
(2) The funds collected under the tax levy shall be held by the county treasurer.
(3) The county treasurer shall be, ex officio, the treasurer for the transportation district and shall keep a detailed account of:
(a) all tax money paid into the fund;
(b) all other money from any source received by the district; and
(c) all payments and disbursements from the fund.