Before constructing any project and before calling any election for the issuance of bonds as hereinafter provided, the district board shall by resolution employ one or more engineers to make a survey of the problems of the district concerning the protection of the lands within the district from storm, overflow or waste waters and especially with reference to the construction of a drainage system or systems. The resolution shall direct the engineer or engineers to prepare and file with the district board a report setting forth:

The engineer or engineers may, subject to the direction of the district board, employ such surveyors and others as may be necessary to prepare the report.

When the engineer’s report is filed, the district board shall examine it and may thereupon:

Notice of the hearing shall be published by the district board pursuant to Section 6066 of the Government Code in a newspaper circulated in the district. At the time and place so fixed, or at the time and place to which the hearing may be from time to time continued, the board shall hear all objections. Said objections may be oral or in writing.

At the conclusion of the hearing the district board shall either order the report changed to conform to some or all the objections made or shall approve and adopt the report as made. If changes in the report are ordered, a further hearing shall be had upon it as amended and further hearings shall be had until the district board approves and adopts the report.

If the district board approves and adopts the report of the engineer or engineers, the board shall order the engineer or engineers to prepare precise plans and specifications for the work contained in said report. Said precise plans and specifications shall be in conformity with the general plans and specifications contained in said report as approved by the district board unless the district board by a four-fifths vote adopts a resolution declaring that the public interest requires a modification of or departure from the general plans and specifications, which resolution shall contain a statement of the manner in which the modification is required or departure is to be made.

The engineer or engineers employed by the district board to prepare the precise plans and specifications shall be directed by the district board to superintend the doing of the work contained in said precise plans and specifications.

A right of way in or across any public highway, street or property in the district is hereby granted to the district wherever the right of way is found by the district board to be necessary or convenient for the doing of any of the work; provided, that if the exercise of the rights herein granted require the alteration or relocation of any facilities devoted to a public use, the district shall pay the cost of such alteration or relocation.

Notwithstanding any other provision in this chapter to the contrary, in the event that prior to the formation of a district a report has been secured by the board of supervisors of the county in which the district is formed pursuant to the provisions of Section 4.2 of the Drainage District Improvement Act of 1919 concerning the protection of lands and other property within the district from storm or waste waters and containing substantially the same data and matter required by Section 56050 of this chapter, and if copies of said report are made available to the district board by the board of supervisors of such county, a new report need not be prepared by the district board under said Section 56050 and the hearing or hearings referred to in this chapter may be held on such report furnished by the board of supervisors of such county, and thereafter all of the provisions of this chapter shall be applicable to such report.