Louisiana Revised Statutes Tit. 30, § 2285.2. Responsible landowner

(1) Was engaged in the business of generating, transporting, storing, treating, or disposing of a hazardous substance or hazardous waste on or in the property, or knowingly permitted others to engage in such a business on the property;

(2) Knowingly permitted any person to make regular use of the property for disposal of waste;

(3) Knowingly permitted any person to use the property for disposal of a hazardous substance;

(4) Knew or reasonably should have known that a hazardous substance was located in or on the property at the time right, title, or interest in the property was first acquired by the person and engaged in conduct associating that person with the discharge or disposal; or

(5) Took action which significantly contributed to the discharge or disposal after that person knew or reasonably should have known that a hazardous substance was located in or on the property.