La. Stat. tit. 33 § 3993
Sewerage districts which take advantage of the provisions of this Sub-part, be and they are hereby authorized through their respective governing authorities if they elect to do so to engage the services of an engineer and provide for his payment, who shall prepare all plans and specifications for said work and improvements herein authorized, and that the governing authority shall approve such plans and specifications by a proper resolution duly adopted. Such engineer, so employed, shall inspect the work as let in accordance with contracts hereunder and shall issue to the said contractor, his estimates thereon from time to time as the said work progresses, which estimates may be paid by the sewerage district either in full or by the retention of ten per cent thereof as retained percentage. The said engineer shall inspect the work as it progresses and shall be responsible for the performance and completion thereof in accordance with the plans and specifications. Upon final completion of the work the said engineer shall render a report to the governing authority of the sewerage district as to the completion of the work in a satisfactory manner, which report shall be duly certified to, and in addition thereto, the said engineer shall do and perform any and all engineering duties required of him in this Sub-part. The governing authority of the sewerage district is also hereby authorized to employ an attorney to handle all legal work in connection with such improvements, herein authorized, and to provide for the payment of his fee and said attorney, in addition to his other duties, shall prepare a complete transcript of the record of the proceedings had covering each and every project completed hereunder and shall file the same with the clerk or secretary of the sewerage district; and said filed transcript shall constitute a permanent record thereof.
La. R.S. § 33:3993