(1) "Environmental mitigation" means an action or activity intended to remedy, reduce, or offset known negative impacts to the environment.
(2) "Environmental response action" means action taken to prevent, eliminate, minimize, investigate, monitor, clean up, or remove contaminants in the environment.
(3) "Financial assurance" means a mechanism or instrument intended to provide funds if necessary to the department to conduct closure, monitoring, or cleanup of a specific facility or site in accordance with the applicable environmental requirements provided in this title.
(4) "Funding source" means an individual or entity that provides a monetary contribution to the Environmental Mitigation and Response Fund.
(5) "Natural resource damage" means damages to land, fish, wildlife, biota, air, water, ground water, drinking water supplies, and other resources that are held in trust for the public or otherwise controlled by the United States, the state, or local government.
(6) "Unused funds" means the remaining funds from a specific funding source following the complete implementation of the environmental mitigation or response actions pursuant to the terms and conditions of the contribution.