§ 24-453. Definitions.

Customers of the stormwater utility. Customers of the stormwater utility shall include all persons, properties, and entities served by and/or benefiting from the utility's acquisition, management, maintenance, extension, and improvement of the public stormwater management systems and facilities and regulation of public and private stormwater systems, facilities, and activities related thereto, and persons, properties, and entities which will ultimately be served or benefited as a result of the stormwater management program.

Hydrologic response. The hydrologic response of a property is the manner and means whereby stormwater collects, remains, infiltrates, and is conveyed from a property. It is dependent on several factors including, but not limited to, the presence of impervious area, the size, shape, topographic, vegetative, and geologic conditions of a property, antecedent moisture conditions, and groundwater conditions on a property.

Impervious surfaces. Impervious surfaces are those areas which prevent or impede the infiltration of stormwater into the soil as it entered in natural conditions prior to development. Common impervious areas include, but are not limited to, rooftops, sidewalks, walkways, patio areas, driveways, parking lots, storage areas, compacted gravel and soil surfaces, awnings and other fabric or plastic coverings, and other surfaces which prevent or impede the natural infiltration of stormwater runoff which existed prior to development.

Stormwater management system. Stormwater management systems address the issues of drainage management (flooding) and environmental quality (pollution, erosion and sedimentation) of receiving rivers, streams, creeks, lakes, ponds, and reservoirs through improvements, maintenance, regulation and funding of plants, works, instrumentalities and properties used or useful in the collection, retention, detention, and treatment of stormwater or surface water drainage.

Undeveloped land. Land in its unaltered natural state or which has been modified to such minimal degree as to have a hydrologic response comparable to land in an unaltered natural state shall be deemed undeveloped. Undeveloped land shall have no pavement, asphalt, or compacted gravel surfaces or structures which create an impervious surface that would prevent infiltration of stormwater or cause stormwater to collect, concentrate, or flow in a manner materially different than that which would occur if the land was in an unaltered natural state.

(Ord. No. 75-06, § 1, 11-2-06)