§ 22. Supervision of contracts. The corporation shall provide for
field supervision over improvement, maintenance or repair work on the
canal system that is done under contract. The corporation shall assign
such engineers, inspectors and other engineering employees as may be
necessary for control over the execution of the work embraced in the
contract. Such corporation shall cause the preparation and approval of
the estimates of the work accomplished, materials delivered, or other
items embodied in the contract and the certificate of the amount of
payment which may be due under the terms of the contract or legal
modifications of the same. Upon the completion of any contract the
corporation shall cause the preparation and approval of a certificate of
acceptance, stating that the work has been well and faithfully performed
in accordance with the terms and conditions of the contract and all
legal modifications thereof.