La. Stat. tit. 41 § 1132
Whenever a settlement is amicably arrived at between the owner of the contiguous and abutting land, and the register of the state land office and is approved by the attorney general, the governor may enter into a contract with the owner in keeping with the proces verbal of the agreement of settlement, which shall be supplied by the owner and the register of the state land office. The agreement shall be executed and signed, in quadruplicate and in notarial form, by the governor, and by the owner, one copy to be filed with the Department of Transportation and Development, one with the register of the state land office, one copy to be recorded in the parish in which the land is situated, and one copy to be retained by the owner.
La. R.S. § 41:1132