7-12-2131. Bids for district work -- exception. (1) Except as provided in subsection (3), the board of county commissioners may call for bids for proposals for several kinds or types of materials for any of the improvements proposed, reserving the right to select the kind or type of materials to be used in making any of the improvements after the bids or proposals have been opened, examined, and declared.

(2) All proposals or bids offered must be accompanied by bid security as provided for in Title 18, chapter 1, part 2. The proposals or bids must be delivered to the county clerk.

(3) If the proposed improvement is the conversion of overhead utilities to an underground location as provided for in 7-12-4102(2)(i), the work must be performed by the public utility responsible for the cost and feasibility report required under 69-4-313.