Ind. Code § 13-11-2-191

(2) An officer, a corporation director, or a senior management official of any of the following that is an applicant: (A) A corporation. (B) A partnership. (C) A limited liability company. (D) A business association. (b) "Responsible party", for purposes of IC 13-19-4, means: (1) an officer, a corporation director, or a senior management official of a corporation, partnership, limited liability company, or business association that is an applicant; or (2) an individual, a corporation, a limited liability company, a partnership, or a business association that owns, directly or indirectly, at least a twenty percent (20%) interest in the applicant. (c) "Responsible party", for purposes of IC 13-20-6, means: (1) an officer, a corporation director, or a senior management official of a corporation, partnership, limited liability company, or business association that is an operator; or (2) an individual, a corporation, a limited liability company, a partnership, or a business association that owns, directly or indirectly, at least a twenty percent (20%) interest in the operator. (d) "Responsible party", for purposes of IC 13-24-2, has the meaning set forth in Section 1001 of the federal Oil Pollution Act of 1990 (33 U.S.C. 2701). (e) "Responsible party", for purposes of IC 13-25-6, means a person: (1) who: (A) owns hazardous material that is involved in a hazardous materials emergency; or (B) owns a container or owns or operates a vehicle that contains hazardous material that is involved in a hazardous materials emergency; and (2) who: (A) causes; or (B) substantially contributes to the cause of; the hazardous materials emergency.