21 – Preparation Contract, Plans and Estimates.

§ 21. Preparation contract, plans and estimates. The corporation shall
  make surveys and prepare plans and specifications for work in connection
  with  the  improvement,  maintenance or repair of the canal system to be
  performed under contract. It shall ascertain with all practical accuracy
  the quantity and quality of all materials to be used and all other items
  of work to be included  in  the  contract  and  shall  make  a  detailed
  estimate  of  the  cost  of  the  same. The quantities contained in such
  estimate shall be used in determining the cost of the work according  to
  the different proposals received.