(1) "Action" means any state activity, program, project, or undertaking or the approval, sanction, assistance, or support of any activity, policy, program, project, or undertaking, including but not limited to:

(a) Recommendations or reports relating to legislation, including requests for appropriations;

(b) New and continuing activities, programs, projects, or undertakings directly engaged in by agencies or supported in whole or in part through state contracts, grants, subsidies, loans, or other forms of funding assistance or involving a state lease, permit, license, certificate, or other entitlement of use;

(c) The sale or transfer of state properties;

(d) Comprehensive or areawide planning in which provisions may be made for any actions or which may result in a proposed action.

(2) "Agency" means any principal department of this state as provided in section 24-1-110.

(3) "Comment" means any notation, observation, remark, or recommendation made in response to a proposed agency action.

(4) "Decision" means the exercise of agency authority at any stage of an action where alterations might be made in the action to modify its impact upon cultural properties.

(5) "Effect" means any change in the quality of the historical, archaeological, or architectural character that qualified property for entry in the state register.

(6) "Historical significance" means having importance in the history, architecture, archaeology, or culture of this state or any political subdivision thereof or of the United States, as determined by the society.

(7) "Local government" means a municipality or a county.

(8) "National register" means the national register of historic places maintained pursuant to 16 U.S.C. sec. 470a.

(9) "Preservation" means the protection, enhancement, and maintenance of historic properties.

(10) "Properties" means the resources, including buildings, structures, objects, sites, districts, or areas, that are of historical significance.

(11) "Review" means the examination of information related to agency actions in order to assess the effect of such actions on properties listed in the state register.

(12) "Society" means the state historical society.

(13) "State register" means the state register of historic properties.

(14) "Water supply structure" means a head gate, ditch, canal, flume, reservoir, bypass, pipeline, conduit, well, pump, or other facility, structure, or device used to store, divert, transport, or control water, and any appurtenances thereto. "Water supply structure" includes any grouping of such structures.