Indiana Code Title 13. Environment § 13-25-4-5

(1) A person that stores, treats, or disposes of hazardous substances.

(2) If necessary to ascertain facts not available at the site or facility where the hazardous substances are located, a person that generates, transports, or otherwise handles or has handled hazardous substances.

(1) upon request of an officer, an employee, or a designated agent of the department, furnish information relating to the hazardous substances referred to in subsection (a)(1) or (a)(2);  and

(2) permit the officer, the employee, or the designated agent of the department at any reasonable time to have access to and to copy all records relating to the hazardous substances referred to in subsection (a)(1) or (a)(2).