La. Stat. tit. 33 § 4107
At the time and place fixed by the resolution of the sewerage and water board for the hearing said board shall meet and shall hear and consider all written objections timely filed by the owners of land in the drainage area who desire to be heard, and after such hearing the sewerage and water board may modify the plan of the drainage works or alter the boundaries of the drainage area to exclude land originally included or make any other decision with reference to the proposed drainage plan that it may deem just and equitable, or it may confirm the plan as originally prepared and the boundaries of the drainage area as originally defined. The boundaries of the drainage area may be extended to include land not originally included only with the consent of the owner of such land or pursuant to the procedure provided in R.S. 33:4106. In either case the benefits accruing to such land shall be assessed by the board of appraisers by written report.
The sewerage and water board shall provide in the resolution declaring its intention to drain the defined area (in said Area A) that a stated percentage of the cost of the work shall be borne by the sewerage and water board.
La. R.S. § 33:4107