“AKART” means all known, available and reasonable methods of prevention, control, and treatment. Terminology from Washington State Pollution Control Act, RCW 90.48.010 and 90.48.520.

“Director” means the Director of Public Works and/or his or her designees.

“Groundwater” 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, 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.

“Hyperchlorinated” means water that contains more than 10 mg/liter chlorine.

“Illicit connection” means any man-made conveyance that is connected to a storm water drainage system that discharges non-storm water. Examples include sanitary sewer connections, floor drains, channels, pipelines, conduits, inlets, hoses, above ground piping, or outlets that are connected directly to a storm water drainage system.

“Illicit discharge” means any direct or indirect non-storm water discharge to any portion of any storm water drainage system, groundwater, or surface water except as expressly allowed by this chapter.

“Minimum Maintenance Standards” means the maintenance, inspection and repair standards that are described in the City of Redmond Stormwater Technical Notebook.

“National Pollutant Discharge Elimination System (NPDES) Stormwater Discharge Permit” means a permit issued by the Environmental Protection Agency (EPA) (or by the Washington Department of Ecology under authority delegated pursuant to 33 USC Section 1342(b)) that authorizes the discharge of pollutants to waters of the United States, whether the permit is applicable on an individual, group, or general areawide basis.

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

“Person” means any individual, partnership, corporation, association, organization, cooperative, public or municipal corporation, agency of the State, local government unit, or other entity recognized by law and acting as either the owner of a premises or as the owner’s agent.

“Pollutant” means anything which causes or contributes to pollution. Pollutants may include, but are not limited to: paints, varnishes, and solvents; oil and other automotive fluids; nonhazardous liquid and solid wastes and yard wastes; refuse, rubbish, garbage, litter, or other discarded or abandoned objects and accumulations, so that same may cause or contribute to pollution; floatables; pesticides, herbicides, and fertilizers; hazardous substances and wastes; sewage, fecal coliform and pathogens; dissolved and particulate metals; animal wastes; wastes and residues that result from constructing a building or structure; soaps and detergents labeled as non-toxic or environmentally friendly; and noxious or offensive matter of any kind.

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

“Source control best management practice” or “BMP” means activities, prohibitions or practices, general good housekeeping practices, pollution prevention and educational practices, maintenance procedures, and structural or managerial practices to prevent or reduce the discharge of pollutants directly or indirectly to storm water, surface water, or groundwater, or storm water drainage systems. BMPs also include treatment practices, operating procedures, and practices to control site runoff, spillage or leaks, sludge or water disposal, or drainage from raw materials storage.

“Storm water” means that portion of precipitation that does not naturally infiltrate, evaporate, or become transpired by vegetation, that becomes surface runoff, interflow, infiltrated by a constructed infiltration facility, or collected by the storm water drainage system.

“Storm water drainage system” means the system that collects, conveys, and stores surface water and storm water runoff, both publicly or privately owned systems, including but not limited to any roads with drainage systems, gutters, curbs, inlets, storm drains, pipes, ditches, pumping facilities, infiltration facilities, retention and detention facilities, water quality treatment facilities, streams, swamps, closed depressions, wetlands, Lake Sammamish, and other drainage structures and appurtenances, both natural and artificial.

“Stormwater 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 storm water, storm water conveyance systems, and/or receiving waters to the maximum extent practicable. (Ord. 3031 § 2, 2021; Ord. 2859 § 2 (part), 2016: Ord. 2473 § 2 (part), 2009; Ord. 1870 § 1 (part), 1996).