La. R.S. 33:4066.10

Any parish, sewerage district, or commission, upon the award of any construction contract under the provisions of this Subpart, shall forthwith require of the engineer of the parish, sewerage district, or commission a duly certified statement or report, showing the total cost of the various sewerage treatment improvements, including the cost pro rata of engineers' and attorneys' fees, and all other expenses incidental to the cost. This report may be done on a monthly basis depending on the number of resident property owners desiring to participate. The report shall also show the amount of the cost chargeable to each lot or parcel of real estate to be benefited by the installation of an individual sewerage system.