As used in this article, unless the context clearly requires a different meaning:
(1) "Cleanup" means such actions as may be necessary to monitor, assess and evaluate the threat of release of hazardous waste or hazardous substances, the containment, collection, control, identification, treatment, dispersal, removal or disposal of hazardous waste or other such actions as may be necessary to respond to hazardous waste or hazardous substance emergencies or to prevent, minimize or mitigate damage to the public health, safety, welfare or to the environment, and includes, where necessary, replacement of existing, or provision of alternative, drinking water supplies that have been contaminated with hazardous waste as a result of an emergency;