13.30.020: DEFINITIONS:
Unless a provision states otherwise, the following terms and phrases used in this chapter have the following meanings:
ADMINISTRATOR OR DRAINAGE UTILITY ADMINISTRATOR: The person appointed by the city to serve as the drainage utility administrator under chapter 13.35 of this title or his or her designee (see section 13.35.030 of this title).
AS BUILT DRAWINGS: Design plans that have been revised to reflect all changes to the plans that occurred during construction. These plans must be signed and stamped by the responsible qualified, licensed professional.
BEST MANAGEMENT PRACTICES (BMPs): Schedules of activities, prohibitions of practices, general good housekeeping practices, pollution prevention and educational practices, maintenance procedures, and other management practices to prevent or reduce the discharge of pollutants directly or indirectly to stormwater, receiving waters, or stormwater collection 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.
CITY: The city of Coeur d'Alene.
CLEAN WATER ACT: The federal water pollution control act (33 USC section 1251 et seq.), and any subsequent amendments thereto.
CLEARING: The removal of vegetation, trees, structures, pavement, etc., by manual, mechanical, or chemical methods.
CONVEYANCE: A mechanism for transporting water from one point to another, including pipes, ditches, and channels.
CONVEYANCE SYSTEM: The drainage facilities, both natural and manmade, which collect, contain, and provide for the flow of stormwater.
DESIGN STORM: A rainfall event of specific return frequency and duration that is used to calculate the runoff volume and peak discharge rate.
DETENTION: A temporary storage of storm runoff in a BMP, which is used to control the peak discharge rates, and which provides for gravity settling of pollutants and sediments.
DISCHARGE: Any addition or introduction of any pollutant, stormwater, or any other substance whatsoever into the drainage system, waters of the state, or into waters of the United States.
DISCHARGER: Any person who causes, allows, permits, or is otherwise responsible for a discharge, including, without limitation, any operator of a construction site or industrial facility.
DRAINAGE SYSTEM OR SYSTEM: The drainage utility maintained system of ditches, channels, creeks, ponds, intake structures, curbs, gutters, diversion structures, levies, storm sewers, pump stations, force mains, buildings, easements, machinery, equipment, connections and all other appurtenances necessary, useful or convenient for the collection, treatment and disposal of any surface runoff or stormwater.
EROSION: The wearing away of the land surface by running water, wind, ice, or other geological agents, including such processes as gravitational creep.
EROSION/SEDIMENT CONTROL: Any temporary or permanent measures taken to reduce erosion, control siltation and sedimentation.
GROUNDWATER: Water in a saturated zone or stratum beneath the land surface or a surface water body.
HAZARDOUS MATERIAL: 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 CONNECTION: Either of the following: Any drain or conveyance, whether on the surface or subsurface, which allows an illegal discharge to enter the drainage system including, but not limited to, any conveyances which allow any nonstormwater discharge including sewage, process wastewater, and wash water to enter the drainage system and any connections to the drainage system from indoor drains and sinks, regardless of whether said drain or connection had been previously allowed, permitted, or approved by an authorized enforcement agency or, any drain or conveyance connected from a commercial or industrial land use to the drainage system which has not been documented in plans, maps, or equivalent records and approved by an authorized enforcement agency.
ILLICIT DISCHARGE: Any discharge to a storm drain that is not composed entirely of stormwater except discharges pursuant to an NPDES permit.
IMPERVIOUS SURFACE: Has the same meaning as that given at subsection 17.02.070A of this code.
INDUSTRIAL ACTIVITY: Activities subject to NPDES industrial permits as defined in 40 CFR 122.26(b)(14).
INFILTRATION: The downward movement of water through the soil. Infiltration capacity is expressed in terms of inches per hour.
INFILTRATION BASIN: Depressions created by excavation or berms to provide for short term ponding of surface runoff until it percolates into the soil through the basin's floor and sides.
INTERMITTENT STREAM: A stream or portion of a stream that flows only seasonally. Typically it is dry for several months of a year.
LAND DISTURBING ACTIVITY: Any activity that results in a change in the existing soil cover (both vegetative and nonvegetative) and/or the existing topography. Land disturbing activities include, but are not limited to, demolition, construction, clearing, grading, filling, and excavation.
NPDES (NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM PERMIT): A permit issued by the U.S. EPA, in compliance with the federal clean water act for the discharge of pollutants from any point source into the waters of the United States.
NONSTORMWATER DISCHARGE: Any discharge that is not entirely composed of stormwater.
NUTRIENTS: Essential chemicals needed by plants or animals for growth. Excessive amounts of nutrients can lead to degradation of water quality and algae blooms. Some nutrients can be toxic at high concentrations.
POLLUTANT: 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; and noxious or offensive matter of any kind or as defined by the federal water pollution control act (also known as the clean water act).
QUALIFIED, LICENSED PROFESSIONAL: A registered civil engineer or registered landscape architect who is licensed in the state of Idaho.
RETENTION: The holding of runoff in a basin without release except by means of evaporation, infiltration, or emergency bypass.
RUNOFF: Stormwater that does not infiltrate into the soil, but remains on the surface and travels over land to either natural or manmade collection facilities.
SECURITY: A surety bond, cash deposit or escrow account, assignment of savings, irrevocable letter of credit or other means acceptable to or required by the city to guarantee that work is completed in compliance with the project's drainage plan and in compliance with all local government requirements.
SEDIMENT: Material that originates from weathering and erosion of rocks or unconsolidated deposits, and is transported by, suspended in, or deposited by water.
SEDIMENTATION: The deposition of sediment usually in basins or watercourses.
STORM FREQUENCY: The time interval between storms of predetermined intensity, e.g., a 2-year, 25-year, or 100-year storm.
STORMWATER: Any surface flow, runoff, and drainage consisting entirely of water from any form of natural precipitation, and resulting from such precipitation.
STORMWATER MANAGEMENT PLAN: A document which describes the best management practices and activities to be implemented by a person or business to identify sources of pollution or contamination at a site and the actions to eliminate or reduce pollutant discharges to stormwater, stormwater conveyance systems, the drainage system and/or receiving waters to the maximum extent practicable.
SWALE: A shallow infiltration basin with relatively gentle side slopes.
TREATMENT AND DETENTION BMP: A BMP that is intended to detain runoff and remove pollutants from stormwater. A few examples of treatment and detention BMPs are detention ponds, oil/water separators, biofiltration swales, and constructed wetlands.
UNDEVELOPED STATE: The natural soils and vegetation in place prior to the start of any construction or clearing activity on the site. (Ord. 3455, 2012)