When the cost of operation and maintenance of motor vehicles and trailers is paid from the county school service fund, the county superintendent shall comply with the following:
(a) Motor vehicle fuel shall be purchased from either of the following:
(1) County-owned garage facilities.
(2) A private vendor, after the county superintendent has secured in writing from responsible vendors at least three estimates of the cost. The county superintendent shall purchase the fuel at the estimated cost from the vendor who submitted the lowest estimate meeting the prescribed specifications, or shall reject all estimates.
(b) When repair of motor vehicle or trailer involves more than six hundred dollars ($600) and is to be made in other than a county-owned garage, the county superintendent shall secure in writing from responsible persons or firms at least three estimates of the cost thereof and shall authorize the repair to be made at the estimated cost from the person or firm who submits the lowest estimate meeting the prescribed specifications, or he shall reject all estimates.
(Amended by Register 75, No. 18.)