204.350. 1. The board of trustees for the district shalllet contracts for all work to be done, excepting in case ofrepairs or emergencies requiring prompt attention, in theconstruction of trunk sewers and sewage treatment plants underthe authority of sections 204.250 to 204.470, the expense ofwhich will exceed five hundred dollars, to the lowest responsiblebidder therefor, upon not less than twenty days' notice of theletting, given by publication in a newspaper of generalcirculation in the district, and in the discretion of the board,in one or more newspapers of general circulation amongcontractors. The board shall have the power and authority toreject any and all bids and readvertise the work.
2. The board of trustees, subject to the concurrence of theadvisory board established by sections 204.250 to 204.470, shallalso have the power to enter into agreements with persons, firmsor corporations of known standing and competence for theexecution and preparation of the surveys, maps and plans neededand required by the board, and also for the laying out andsuperintendence of work to be constructed under the authority ofsections 204.250 to 204.470, but no single agreement so madeshall cover more than one piece or class of work.
(L. 1967 p. 310 ยง 16)