Alteration: Either an expansion as described below or a change in the use or activity in a portion of a building.

Aquifer: A stratum or zone below the surface of the earth that will yield water in a usable quantity to a well or spring.

Conversion: A change in the use or activity of a building or site.

Development: Includes, but is not limited to, any structure or other impervious cover, including streets, parking lots, driveways, walkways and other paved areas.

Expansion: Any addition to a building or part of a building.

Groundwater: Any water found under the surface of the earth.

Hazardous material: Any material as defined by 49 USC Section 5102 and amendments thereto.

Hazardous substance: Any substance as found in 40 CFR Part 116, Designation of Hazardous Substances, and amendments thereto.

Hazardous waste: Any waste as defined by 40 CFR Section 261.3, Definition of Hazardous Waste, and amendments thereto.

Impervious surfaces: Areas that do not allow significant amounts of water to penetrate.

Leachable wastes: Waste materials including without limitation solids, sewage sludge and agricultural residue that may release waterborne contaminants to the surrounding environment.

Public water supply well: A well from which the water is used to serve fifteen (15) or more service connections and which is used for public purposes.

Runoff: The water on the surface of the land resulting from any form of precipitation, including snow or ice melt.

Secondary containment: A system installed to prevent any volume of a substance released from the primary containment tank from reaching the soils and/or water outside the system for the anticipated period of time necessary to detect and recover the released substance.

Sewage: Water carrying human or animal waste from septic tanks, water closets, residences, buildings, industrial and municipal establishments or other places, together with such groundwater infiltration, sub-surface water, mixtures of industrial waste or other waste as may be present.

Surface waters: Water occurring generally on the surface of the earth.

Underground petroleum storage: Any underground storage vessel, including the underground pipes connected thereto, which is used to contain petroleum products including heating oil and diesel fuel, and the volume of which, including the volume of the underground pipes connected thereto, is buried ten (10) percent or more beneath the surface of the ground.

Water Resource Protection Area District map: Map delineating the zone of contribution area for active and planned public water supply wells within the city. Planned wells are only for advisory purposes, not regulatory as the active wells depicted on the map.

Zone of contribution: The area contributing water to a well or well field. (Ord. No. 484, 2-6-01; Ord. No. 2009-08, §§ 1, 2, 6-2-09. 1976 Code § 15-1-70(C))