A. The “city” shall mean the city of Algona, Washington, a municipal corporation created and existing under the laws of the state of Washington.

B. “Developed” shall mean that condition of real property altered from its natural state by the addition to or construction on such property of impervious ground cover or other manmade physical improvements such that the hydrology of the property or portion thereof is affected.

C. An “equivalent residential unit” shall mean and be equal to two thousand square feet of impervious ground cover and is the measure of impervious ground cover to be used by the utility in assessing service charges and system development fees.

D. “Impervious surfaces” shall mean those hard-surfaced areas either which prevent or retard the entry of water into the soil in the manner that such water entered the soil under natural conditions pre-existent to development, or which cause water to run off the surface in greater quantities or at an increased rate of flow than that present under natural conditions pre-existent to development, including, without limitation, such surfaces as roof tops, asphalt or concrete sidewalks, paving, driveways and parking lots, walkways, patio areas, and gravel, oiled macadam or other surfaces which similarly affect the natural infiltration or runoff patterns existing prior to development. See Section 13.46.020(H) of this code for additional language.

E. “Service charge” means the monthly fee levied by the utility upon all developed real property within the boundaries of the utility as authorized by Section 13.47.030 of this chapter.

F. The “system” shall mean the entire system of storm drainage facilities owned by the utility or over which the utility has control or right of use for the movement and retention of storm and surface waters, including both naturally occurring and manmade facilities.

G. The “system development charge” shall mean that fee authorized by Section 13.47.070 of this chapter and charged by the utility to property which is developed after the effective date of the ordinance codified in this chapter, which charge reflects a proportionate share of the utility’s capital costs attributable to the newly developed property.

H. “Undeveloped” shall mean that condition of real property unaltered by the construction or addition to such property by man of impervious ground cover or physical manmade improvements of any kind which change the hydrology of the property from its natural state.

I. The “utility” means the city of Algona, Washington, storm water management utility created by Ordinance No. 875 of the city, passed on November 1, 1999, and codified at Chapter 13.45 of this code. (Ord. 947-04 § 2).