“Administrator” means as further defined in PCC 10.31.040.

“Best management practices” or “BMPs” means the schedules of activities, prohibitions of practices, maintenance procedures, and structural and/or managerial practices approved by the City that, when used singly or in combination, prevent or reduce the release of pollutants and other adverse impacts to receiving waters.

“Clean Water Act” means the federal Water Pollution Control Act (33 U.S.C. 1251 et seq.), and any subsequent amendments thereto.

“Ground water” means water in a saturated zone or stratum beneath the surface of the land or below a surface water body.

“Hazardous materials” means any material, including any substance, waste, or combination thereof, which because of its quantity, concentration, or physical, chemical, radioactive, or infectious characteristics may cause, or significantly contribute to, a substantial present or potential hazard to human health, safety, property, or the environment when improperly treated, stored, transported, disposed of, or otherwise managed.

“Illicit connection” is defined as the following: any drain, conveyance, or hydraulic connection, whether surface or subsurface, which allows an illegal discharge to enter the stormwater drainage system including, but not limited to, any conveyances which allow sewage or processed wastewater to enter the stormwater drainage system and any connections to the stormwater drainage system from indoor drains and sinks, regardless of whether the connection had been previously allowed, permitted, or approved by the city or other authorized public agency.

“Illicit discharge” means any direct or indirect non-stormwater discharge to the Municipal Separate Storm Sewer System (MS4) or waters of the state prohibited under this chapter.

“MS4” (Municipal Separate Storm Sewer System) or “stormwater drainage system” means the system of conveyances including municipal streets, catch basins, curbs, gutters, ditches, man-made channels, detention facilities, storm drains or any other facilities owned and operated by the city and designed or used for collecting, conveying or treating stormwater.

“National Pollutant Discharge Elimination System (NPDES) Phase II Permit” means the “Eastern Washington Phase II Municipal Stormwater Permit” issued by the Washington State Department of Ecology to the City with an effective date of February 16, 2007, and subsequent reissues.

“Non-stormwater discharge” means any discharge to the stormwater drainage system that is not composed entirely of stormwater.

“Pollutant” or “pollution” shall be construed to mean such contamination or other alteration of the physical, chemical, or biological properties of any of the waters of the state including change in temperature, taste, color, turbidity, or odor of the waters or such discharge of any liquid, gaseous, solid, radioactive, or other substance into any waters of the state that will or is likely to create a nuisance or render such waters harmful, detrimental, or injurious, to the public health, safety, or welfare, or to domestic, commercial, industrial, agricultural, recreational, or other legitimate beneficial uses, or to livestock, wild animals, birds, fish, or other aquatic life; as defined in RCW 90.48.020 as now existing or hereafter amended.

“Pollution prevention plan” means a document which describes the best management practices and activities to be implemented by a person to identify sources of pollution or contamination at a premises and the actions to eliminate or reduce pollutant discharges to stormwater, stormwater conveyance systems, and/or receiving waters to the maximum extent practicable.

“Premises” means any building, lot, parcel of land, or portion of land whether improved or unimproved including adjacent sidewalks and parking areas.

“Stormwater” means surface water runoff resulting from natural springs, rainfall, snowmelt, or other precipitation.

“Wastewater” or “process wastewater” means any liquid or water which, during manufacturing or processing, comes into direct contact with or results from the production or use of any raw material, intermediate product, finished product, byproduct, or waste product.

“Watercourse” and “river or stream” means any portion of a channel, bed, bank, or bottom waterward of the ordinary high water line of waters of the state including areas in which fish may spawn, reside, or through which they may pass, and tributary waters with defined bed or banks, which influence the quality of fish habitat downstream. This includes watercourses which flow on an intermittent basis or which fluctuate in level during the year and applies to the entire bed of such watercourse whether or not the water is at peak level. This definition does not include irrigation ditches, canals, stormwater run-off devices, or other entirely artificial watercourses, except where they exist in a natural watercourse which has been altered by humans.

“Waters of the state” means all lakes, rivers, ponds, streams, inland waters, underground waters, salt waters, and all other surface waters and water courses within the jurisdiction of the state of Washington as defined in Chapter 90.48 RCW. (Ord. 23-3 §2, 2023; Ord. 09-21 §3, 2009).