For the purposes of this chapter, the words or phrases below shall have the following meanings:
"Best management practices" or "BMPs"means the schedules of activities, prohibitions of practices, general good housekeeping practices, pollution prevention and educational practices, maintenance procedures, and other structural or managerial practices that, when used singly or in combination, promote the prevention or reduction of pollutant discharges and other adverse impacts to waters of Washington State or the stormwater drainage system. 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.
"CFR"means Code of Federal Regulations.
"Clean Water Act"means the Federal Water Pollution Control Act (33 U.S.C.
1251 et seq.), and any subsequent amendments thereto.
"Construction activity"means those activities subject to NPDES construction permits. These include construction projects resulting in land disturbance of one acre or more. Such activities include but are not limited to clearing and grubbing, grading, excavating, and demolition.
"County"means Cowlitz County Department of Public Works or, as indicated by the context, may mean the County Engineer, or other employee or agent representing the county in the discharge of his or her duties.
"Director"means the County Engineer or his/her designee.
"Discharge"means to cause or allow matter to be thrown, drained, released, dumped, spilled, emptied, emitted or poured into receiving waters, groundwater, a natural drainage system, or a drainage facility, or to cause or allow matter to flow, run, or seep from land into receiving waters, groundwater, a natural drainage system, a drainage facility, or the MS4.
"Groundwater"means all waters that exist beneath the land surface or beneath the bed of any stream, lake, or reservoir, or other body of surface water, or whatever may be the geological formation or structure in which such water stands, flows, percolates or otherwise moves.
"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.
"Illicit connections"means any manmade conveyance that is connected to the MS4 without a permit, excluding roof drains and other similar type connections. Examples include sanitary sewer connections, floor drains, channels, pipelines, conduits, inlets, or outlets that are connected directly to the stormwater drainage system.
"Illicit discharge"means any direct or indirect pollutant or nonstormwater discharge into the MS4, except as expressly exempted in CCC §
15.50.060.
May/Shall."May" is permissive. "Shall" is mandatory.
"Municipal separate storm sewer system" or "MS4"means any part of a manmade physical system operated by the county designed or constructed to collect, treat, convey, store, or control the flow of stormwater, including but not limited to any roads with drainage systems, municipal streets, gutters, curbs, inlets, piped storm drains, constructed channels and ditches, stormwater conveyance and containment facilities, including, infiltration facilities, retention and detention facilities, stormwater treatment facilities, erosion and sedimentation control facilities, pumping facilities and all other drainage structures and appurtenances which are within the county and are not part of a publicly owned treatment works as defined at 40 CFR Section
122.2.
"National Pollutant Discharge Elimination System" or "NPDES"means the national program for issuing, modifying, revoking, and reissuing, terminating, monitoring and enforcing permits, and imposing and enforcing pretreatment requirements, under Sections 307, 318, 402, and 405 of the Federal Clean Water Act, for the discharge of pollutants to surface waters of the state from point sources. These permits are referred to as NPDES permits and, in Washington State, are administered by the Washington Department of Ecology.
"Natural drainage system"means the physical beds and boundaries of receiving waters, including those natural drainage systems that have been altered by human actions.
"Nonstormwater discharge"means any discharge to the MS4 that is not composed entirely of stormwater. Examples may include but are not limited to sanitary wastewater, laundry wastewater, noncontact cooling water, radiator flushing wastewater, spills from roadway accidents, and improperly disposed motor oil, solvents, lubricants, and paints.
"Person"means any individual, association, organization, partnership, firm, corporation or other entity recognized by law and acting as either the owner or as the owner's agent.
"Pollutant"means any potentially undesirable substance which can be physical, chemical or biological that 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; 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.
"RCW"means the Revised Code of Washington.
"Stormwater"means runoff during and following precipitation and snowmelt events, including surface runoff and drainage.
"Stormwater pollution prevention plan" or "SWPPP"means a written plan to implement best management practices to identify, prevent, and control the contamination of stormwater discharges to stormwater, stormwater drainage systems, MS4 and/or receiving waters to the maximum extent practicable.
"WAC"means the Washington Administrative Code.
"Wastewater"means any water or other liquid, other than uncontaminated stormwater, discharged from a facility.
"Water body"means lakes, rivers, ponds, streams, wetlands, inland waters, sloughs, ditches, and all other surface waters and watercourses within the jurisdiction of the State of Washington.
(Ord. 09-137 § 1, 8-25-2009; Ord. 22-063 § 1, 6-14-2022)