5-18C-1 Contract for transportation of students. 5-18C-2 Contract for services of school food service management company. 5-18C-3 Public sale or auction--Performance bond--Competitive quotations--Records to be retained. 5-18C-4 Water, sanitary sewer, and storm sewer trunk lines or mains, sewer collection systems, streets, and regional storm sewer detention ponds installed at developer's expense. 5-18C-5 County highway system and secondary highways--Dams. 5-18C-6 Fuel purchased by local government units. 5-18C-7 Municipal garbage disposal contracts and supply contracts. 5-18C-8 Purchases from state contract list or below state contract price.