Digital Wallet means an electronic payment service that allows you to store a digital version of your Card on a computer or device and make payments using that Digital Card. Digital Wallets may be operated by third party Digital Wallet providers and are available on supported devices.
Freeboard means a factor of safety usually expressed in feet above a flood level for purposes of floodplain management. "Freeboard" tends to compensate for the many unknown factors that could contribute to flood heights greater than the height calculated for a selected size flood and floodway conditions, such as wave action, blockage of bridge or culvert openings, and the hydrological effect of urbanization of the watershed.
Junk yard means any property utilized for breaking up, dismantling, sorting, storing, distributing, buying or selling of any scrap waste material, junk or used equipment or machinery of any nature.
Freeboard height means for vapor degreasers the distance from the top of the vapor zone to the top of the degreaser tank. For cold cleaners, freeboard height means the distance from liquid solvent level in the degreaser tank to the top of the tank.
Uppermost aquifer means the geologic formation nearest the natural ground surface that is an aquifer, as well as lower aquifers that are hydraulically interconnected with this aquifer within the facility's property boundary.