As used in this chapter unless the context otherwise requires: 1. “Commission” means the natural resource commission. 2. “Department” means the department of natural resources created under section 455A.2 . 3. “Director” means the director of the department. [S13, §1400-p; C24, 27, §1795, 2604; C31, §1703-d2, -d3, 1795, 2604; C35, §1703-g1; C39, § 1703.28; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §107.1 ; 82 Acts, ch 1199, §92, 96 ] 86 Acts, ch 1245, §1827 C93, §456A.1