La. Stat. tit. 33 § 130.13
Before any designation is made of an industrial area or any change is made of the boundaries of an existing one, the parish governing authority shall hold not less than one public hearing thereon. The parish governing authority shall give notice of the purpose, time and place of the public hearing by one publication in a newspaper of general circulation throughout the parish not less than ten days prior to the date set for the hearing. The designation of an industrial area or any change of the boundaries of an existing one shall be by resolution of the parish governing authority. The resolution shall refer expressly to the map or maps and descriptive and other matter related to the industrial area, and the action taken by the parish governing authority shall be recorded on the map or maps and descriptive and other matter by the identifying signature of the presiding officer of the parish governing authority. Certified copies of the map or maps and descriptive and other matter shall be filed with the parish governing authority and with the clerk of court of the parish.
La. R.S. § 33:130.13