For the purpose of this chapter, the following terms, phrases and words shall mean:
AUTHORIZED ENFORCEMENT AGENCY: Employees or designees of the director of the municipal agency designated to enforce this chapter.
BERM: An earthen mound used to direct the flow of runoff around or through a structure.
BEST MANAGEMENT PRACTICES (BMPs): Includes schedules of activities, prohibitions of practices, maintenance procedures, design standards, and other management practices to prevent or reduce the discharge of pollutants directly or indirectly into the waters of the United States. BMPs also include treatment requirements, operating procedures, educational activities, and practices to control plant site runoff spillage or leaks, sludge or waste disposal, or drainage from raw material storage.
CITY: North Salt Lake City, a municipal corporation of the state of Utah.
CITY COUNCIL: North Salt Lake City council.
CITY ENGINEER: The city engineer or his/her authorized representatives.
CLEAN WATER ACT: The federal water pollution control act (33 USC section 1251 et seq.), and any subsequent amendments thereto.
CONSTRUCTION ACTIVITY: Activities subject to UPDES construction permits. These include construction projects resulting in land disturbance of greater than or equal to one acre, or construction projects less than one acre being part of a common plan of development or sale which is greater than or equal to one acre. Such activities include, but are not limited to, clearing and grubbing, grading, excavating and demolition.
CONVEYANCE SYSTEM: Any channel or pipe for collecting and directing the stormwater.
COUNTY: Davis County.
CULVERT: A covered channel or large diameter pipe that directs water flow below the ground surface.
CUSTOMER OR PERSON: Any individual, public or private corporation and its officers, partnership, association, firm, trustee, executor of an estate, the state or its departments, institutions, bureaus or agencies, county, city, political subdivision, or any other governmental or legal entity recognized by law.
DEGRADATION:
A. Biological Or Chemical: The breakdown of chemical compounds into simpler substances, usually less harmful than the original compound, as with the degradation of a persistent pesticide.
B. Geological: Wearing down by erosion.
C. Water: The lowering of the water quality of a watercourse by an increase in the amount of pollutant.
DEVELOPED PARCEL: Any parcel whose surface has been altered by grading, filling or construction of any improvement.
DIKE: An embankment to confine or control water, often built along the banks of a river to prevent overflow of lowlands; a levee.
DISCHARGE: The release of stormwater or other substance from a conveyance system or storage container.
DRAINAGE: Refers to the collection, conveyance, containment and/or discharge of surface and storm water runoff.
EQUIVALENT RESIDENTIAL UNIT (ERU): An ERU is equal to three thousand nine hundred (3,900) square feet of impervious surface area. This is based on a single-family residential parcel, which has an average of three thousand nine hundred (3,900) square feet of impervious surface.
EROSION: The wearing away of land surface by wind or water. Erosion occurs naturally from weather or runoff but can be intensified by land clearing practices related to farming, residential or industrial development, road building or timber cutting.
FILL: A deposit of earth material placed by artificial means.
FIRST FLUSH: The delivery of a disproportionately large load of pollutants during the early part of storms due to the rapid runoff of accumulated pollutants.
GENERAL PERMIT: A permit issued under the UPDES program to cover a class or category of stormwater discharges.
GRADING: The cutting and/or filling of the land surface to a desired slope or elevation.
HAZARDOUS WASTE: Byproducts of society that can pose a substantial or potential hazard to human health or the environment when improperly managed. Possesses at least one of four (4) characteristics (flammable, corrosivity, reactivity or toxicity), or appears on special EPA lists.
HEAVY METALS: Metals of high specific gravity, present in municipal and industrial wastes, that pose long term environmental hazards. Such metals include cadmium, chromium, cobalt, copper, lead, mercury, nickel and zinc.
ILLEGAL DISCHARGE: Any direct or indirect nonstormwater discharge to the storm drain system, except discharges from emergency firefighting activities and other discharges exempted in this chapter.
ILLICIT CONNECTION: Any physical connection to a publicly maintained storm drain system allowing discharge of nonstormwater which has not been permitted by the public entity responsible for the operation and maintenance of the system.
IMPERVIOUS SURFACE: A hard surface which prevents or retards the infiltration of water. Some examples of impervious surfaces are rooftops, concrete or asphalt paving, walkways, patios, driveways, parking lots or storage areas, and gravel that has been subject to surface traffic, compacted native surfaces, and earthen materials, and oiled, macadam or other surfaces which impede the natural infiltration of stormwater.
INDIVIDUAL PERMIT: A permit issued under the UPDES program for a specific facility, whereby the unique characteristics of that facility may be addressed through the imposition of special conditions or requirements.
INFILTRATION: The downward movement of water from the surface to the subsoil. The infiltration capacity is expressed in terms of inches/hour.
INGRESS/EGRESS: The points of access to and from a property.
INLET: An entrance into a ditch, storm sewer or other waterway.
MITIGATION: Stormwater control facilities located on a parcel, which either hold runoff for a short period of time before releasing it to the storm drainage system, or hold water until it evaporates or infiltrates into the ground.
MULCH: A natural or artificial layer of plant residue or other materials covering the land surface which conserves moisture, holds soil in place, aids in establishing plant cover and minimizes temperature fluctuations.
MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4): A municipally owned and operated stormwater collection system that may consist of any or all of the following: curb and gutter, drainage swales, piping, ditches, canals, detention basins, inlet boxes, or any other system used to convey stormwater that discharges into canals, ditches, streams, rivers or lakes not owned and operated by that municipality.
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES): The provisions of the federal clean water act establishing specific permit requirements for the control of stormwater discharges. It is the environmental protection agency's program to control the discharge of pollutants to waters of the United States.
NONPOINT SOURCE: Pollution caused by diffuse sources (not a single location such as a pipe) such as agricultural or urban runoff.
OFF SITE: Any area lying upstream of the site that drains onto the site and any area lying downstream of the site to which the site drains.
ON SITE: The entire property that includes the proposed development.
OUTFALL: The point, location or structure where wastewater or drainage discharges from a sewer pipe, ditch or other conveyance to a receiving body of water.
PARCEL: The smallest, separately segregated unit of land having an owner. A parcel has boundaries and surface area, and is documented with a property number by the county.
PLAT: A map or representation of a subdivision showing the division of a tract or parcel of land into lots, blocks, streets or other divisions and dedications.
POINT SOURCE: Any discernible, confined and discrete conveyance, including, but not limited to, any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock, concentrated animal feeding operation, or vessel or other floating craft, from which pollutants are or may be discharged.
POLLUTANT: Generally, any substance introduced into the environment that adversely affects the usefulness of a resource. "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 the same may cause or contribute to pollution; sediment, 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.
PUBLIC WORKS DIRECTOR: City public works director or his/her authorized representatives.
RECEIVING WATERS: Bodies of water or surface water systems receiving water from upstream constructed (or natural) systems.
RETENTION: The holding of runoff in a basin without release except by means of evaporation, infiltration or emergency bypass.
RIPARIAN: A relatively narrow strip of land that borders a stream or river.
RIPRAP: A combination of large stone, cobbles and boulders used to line channels, stabilize banks, reduce runoff velocities or filter out sediment.
RUNOFF: That part of precipitation, snowmelt or irrigation water that runs off the land into streams or other surface water.
RUNON: Stormwater surface flow or other surface flow which enters property other than that where it originated.
SEDIMENTATION: The process of depositing soil particles, clays, sands or other sediments that were picked up by runoff.
SHEET FLOW: Runoff which flows over the ground surface as a thin, even layer, not concentrated in a channel.
SINGLE-FAMILY RESIDENTIAL PARCEL: Any parcel of land containing a single-family dwelling unit.
SOURCE CONTROL: A practice or structural measure to prevent pollutants from entering stormwater runoff or other environmental media.
STABILIZATION: The proper placing, grading and/or covering of soil, rock or earth to ensure its resistance to erosion, sliding or other movement.
STORM DRAIN: A slotted opening leading to an underground pipe or open ditch for carrying surface runoff.
STORM DRAINAGE FACILITIES: Any facility, improvement, development or property made for controlling stormwater quantity and quality.
STORM DRAINAGE SYSTEM: All manmade storm drainage facilities and conveyances, and natural stormwater drainage channels owned or maintained by the city that store, control, treat and/or convey stormwater.
STORM DRAINAGE UTILITY OR UTILITY: The utility created by this chapter, which operates, maintains, regulates and improves storm drainage facilities and programs within North Salt Lake City.
STORMWATER: Water produced by storms, surface drainage, snow and ice melt, and other water handled by the storm drainage system. It excludes infiltration.
STORMWATER MANAGEMENT PROGRAM: 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 and/or receiving waters.
SWALE: An elongated depression in the land surface that is at least seasonally wet, is usually heavily vegetated and is normally without flowing water. Swales direct stormwater flows into primarily drainage channels and allow some of the stormwater to infiltrate into the ground surface.
TREATMENT CONTROL BMP: A BMP that is intended to remove pollutants from stormwater.
UNDEVELOPED PARCEL: Any parcel that has not been altered by grading, filling or construction.
UTAH POLLUTANT DISCHARGE ELIMINATION SYSTEM (UPDES): The program created when the U.S. EPA NPDES program granted primacy to the state of Utah. It is the UPDES which authorizes municipal stormwater discharges under the general permit for discharges from small municipal separate storm sewer systems (MS4s) to the waters of the state of Utah.
WATERS OF THE STATE: Surface waters and groundwaters within the boundaries of the state of Utah and subject to its jurisdiction.
WATERS OF THE UNITED STATES: Surface watercourses and water bodies as defined in 40 CFR section 122.2, including all natural waterways and definite channels and depressions in the earth that may carry water, even though such waterways may only carry water during rains and storms and may not carry stormwater at and during all times and seasons.
WETLANDS: An area that is regularly saturated by surface water or groundwater and subsequently characterized by a prevalence of vegetation that is adapted for life in saturated soil conditions. Examples include swamps, bogs, marshes and estuaries. (Ord. 2016-12, 8-16-2016)