(1) “City” means West Valley City, a municipal corporation of the State of Utah.

(2) “County” means Salt Lake County.

(3) “Council” means West Valley City Council.

(4) “Customer” or “Person” means any individual; public or private corporation and its officers; partnership; association; firm; trustee; executor of an estate; the state or its departments, institutions, bureaus, agencies; county; city; political subdivision; or any other governmental or legal entity recognized by law.

(5) “Director” means the Public Works Director or the Director’s designee.

(6) “Equivalent Residential Unit (ERU)” means a unit equal to 3,163 square feet of impervious surface area. This is based on an average single-family residential parcel, which has an impervious surface area of 3,163 square feet. Total ERUs are calculated by dividing total square feet of impervious surface by 3,163 (one ERU), rounded to the nearest whole number.

(7) “Impervious Surface” means a parcel’s hard surface area that causes water to run off its surface in quantities or speeds greater than under natural conditions. Some examples of impervious surfaces are rooftops, concrete or asphalt paving, walkways, patios, driveways, parking lots or storage areas, and gravel that has been subject to surface traffic, including compacted gravel surfaces.

(8) “Parcel” means the smallest, separately segregated unit of land having an owner. A parcel has boundaries and surface area and is documented with a property number by the County.

(9) “Developed Parcel” means any parcel whose surface has been altered by grading, filling, or construction of any improvement.

(10) “Single-Family Residential Parcel” means any parcel of land containing a single-family dwelling unit.

(11) “Storm Water” means water produced by storms, surface drainage, snow and ice melt, and other water handled by the storm sewer drainage system.

(12) “Storm Sewer Facilities” means any facility, improvement, development, or property made for controlling storm water quantity and quality.

(13) “Storm Sewer Drainage System” means all man-made storm sewer facilities and conveyances, and natural storm water systems owned or maintained by the City that store, control, treat, and/or convey storm water.

(14) “Storm Water Utility” or “Utility” means the utility created by this Chapter, which operates, maintains, regulates, and improves storm sewer facilities and programs within West Valley City.

(15) “Undeveloped Parcel” means any parcel that has no impervious area.