(21) "Storage" means the containment or holding of hazardous waste, either on a temporary basis or for a period of years, in such a manner as not to constitute disposal of such hazardous waste.

(11) "Storage" means any process, properties, activities, or facilities used to hold, store, or maintain gas.

(10) "Storage" means any keeping or retention in this state of tangible personal property for use or consumption in this state or for any purpose other than sale at retail in the regular course of business.