(a) The construction of any works pursuant to a water withdrawal permit granted under this Part shall be under the general supervision of a person licensed to practice engineering in this state (professional engineer). Upon completion of construction and pre-operational testing, such works may not commence final operation until the professional engineer first certifies in writing to the department that the works have been constructed in accordance with the issued permit.

(b) For public water supply systems, the water withdrawal permittee shall submit to the department a copy of the approval of completed works issued by the Department of Health before the commencement of final operation of the water withdrawal system.

(c) The department, in its discretion, may allow the operation of portion of a project prior to the completion of the entire project so long as the relevant portion of the project has obtained the approvals required in subdivisions (a) and (b).