13.30A.030 Definitions.

As used in this chapter:

A.    “Base unit” means a single-family residential unit of three thousand five hundred (3,500) square feet of impervious surface.

B.    “Best management practices” means the most practical, effective tools to protect water resources. They include specific management activities and maintenance procedures for controlling, treating, or preventing pollution from stormwater runoff.

C.    “Impervious surfaces” means a hard surface area that either prevents or retards the entry of water into the soil mantle as under natural conditions prior to development. A hard surface area which causes water to run off the surface in greater quantities or at an increased rate of flow from the flow present under natural conditions prior to development. Common impervious surfaces include, but are not limited to, roof tops, walkways, patios, driveways, parking lots or storage areas, concrete or asphalt paving, gravel roads, packed earthen materials, and oiled, macadam or other surfaces which similarly impede the natural infiltration of stormwater. Open, uncovered retention/detention facilities shall not be considered as impervious surfaces.

D.    “Stormwater runoff” means the rainfall and/or snowmelt that runs off impervious surfaces and yards into surface water and groundwater.

E.    “Runoff” means stormwater runoff, irrigation waters, water used to clean, and other nonstorm created water that runs off impervious surfaces, yards and other surfaces into surface water and groundwater. It carries pollutants such as oil, dirt, chemicals, debris, and pet waste.

F.    “Single-family residential lot” means a single dwelling used for single-family living on a single-parcel.

G.    “Multifamily residential lot” means a parcel of land having two (2) or more family dwellings on a single parcel. (Sec. 3 of Ord. 1999-11-09; amended by Sec. 1 of Ord. 2001-08-20)