For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates, or requires, a different meaning.
BEST MANAGEMENT PRACTICES (BMPs). A wide range of management procedures, schedules of activities, prohibitions of practices, maintenance procedures, and other management practices which have been demonstrated to effectively control the quality and/or quantity of stormwater runoff and which are compatible with the planned land use. BMPs also include treatment requirements, operating procedures, and practices to control site runoff, spillage, or leaks, sludge, or water disposal, or drainage from raw material storage. A list of sample BMPs and their effectiveness ratings can be found in the City Stormwater Management Plan dated March 2003 (available at the City Stormwater Management Department).
CATCH BASIN. A drain inlet designed to keep out large or obstructive matter.
COMMON PLAN OF DEVELOPMENT OR SALE. A plan to subdivide a parcel of land into separate parts for separate sale. This can be for a residential, commercial, or industrial development. The plan originates as a single parcel that is separated into parts. This usually goes through an approval process by a local governmental unit, but in some cases, it may not require that process. The original plan is considered the COMMON PLAN OF DEVELOPMENT OR SALE, whether phased or completed in steps. Additional information related to COMMON PLAN OF DEVELOPMENT for permit purposes: For UPDES stormwater permit purposes, a common plan must have been initiated after October, 1992. A COMMON PLAN OF DEVELOPMENT OR SALE remains so until each lot or section of the development has fulfilled its planned purpose (for example, in a residential development as homes are completed, stabilized, and sold or occupied). As lots or separated sections of the development are completed, the lot or section is stabilized, and as the plan purposes are fulfilled for that area, lot, or section, it is no longer part of the COMMON PLAN OF DEVELOPMENT OR SALE (for example, if a home is sold in a development and the owner decides to add a garage somewhere on the lot, that garage project is not part of the common plan of development or sale). In this process, a COMMON PLAN OF DEVELOPMENT OF SALE may become reduced in size and/or separated by completed areas which are no longer part of the common plan of development or sale, but all unfinished lots remain part of the same common plan of development or sale until they are completed, stabilized, and fulfilled according to the purpose of the plan.
CONTAINMENT. Any physical, chemical, biological, or radiological substance or matter in water.
DEBRIS. Any dirt, rock, sand, vegetation, rubbish, or litter.
DETENTION BASIN. A depression designed to detain stormwater runoff until downstream storm sewer resources are less heavily taxed. A DETENTION BASIN contains an inlet and an outlet, allows debris to settle out, and regulates water flow.
DEVELOPMENT. Any human-made change to improved or unimproved real estate, including, but not limited to, site preparation, filling, grading, paving, excavation, and construction of buildings or other structures.
DIRECTOR. The Director of Public Works of the city, or his or her duly-appointed deputy, agent, or representative.
DISCHARGE. Dispose, deposit, spill, pour, inject, seep, dump, leak, or place by any means, or that which is disposed, deposited, spilled, poured, injected, seeped, dumped, leaked, or placed by any means, including any direct of indirect entry of any solid or liquid matter into the municipal separate stormwater system.
DISTURB. To alter the physical condition, natural terrain, or vegetation of land by clearing, grubbing, grading, excavating, filling, building, or other construction activity.
DRAIN INLET. A point of entry into a sump, detention basin, or storm drain system.
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 presence or potential hazard to human health, safety, property, or the environment when improperly treated, stored, transported, disposed of, or otherwise managed. HAZARDOUS MATERIAL includes, but is not limited to, any hazardous substance designated under 40 C.F.R. part 116 pursuant to § 311 of the Clean Water Act, being 33 U.S.C. § 1321.
ILLICIT CONNECTIONS. Illegal and/or unauthorized connections to the municipal separate stormwater system, whether or not such connections result in discharges into that system.
ILLICIT DISCHARGE. Either of the following:
(1) Any non-stormwater discharge to the storm sewer system. ILLICIT DISCHARGES includes both direct discharges (for example, wastewater piping either mistakenly or deliberately connected to the storm sewer system) and indirect discharges (for example, infiltration into the storm sewer system or spills collected by drain inlets). Any drain, or conveyance, whether on the surface or subsurface, which allows an illicit discharge to enter the storm drain system. Examples include, but are not limited to, any conveyances which allow non-stormwater discharge such as sewage, process wastewater, or wash water to enter the storm drain system, and any discharges to the storm drain system from indoor drains or sinks, regardless of whether said drain or discharge had been previously allowed, permitted, or approved by a government agency; or
(2) Any drain or conveyance connected to or discharging to the storm drain system, which has not been:
(a) Documented in plans, maps, or equivalent records submitted to the city; and
(b) Approved in writing by the city.
LAND DEVELOPMENT. Any development of a parcel, lot, subdivision plat, or site plan. If there is more than one lot in the subdivision plat or site plan, all lots in the subdivision plat or site plan shall jointly be considered to be part of the LAND DEVELOPMENT.
LOW IMPACT DEVELOPMENT (LID). An approach to land development (or re-development) that works with nature to more closely mimic pre-development hydrologic functions. LID employs principles, such as preserving and recreating natural landscape features, and minimizing effective imperviousness to create functional and appealing site drainage, that treat stormwater as a resource rather than a waste product. There are many practices that have been used to adhere to these principals, such as bio retention facilities, rain gardens, vegetated rooftops, rain barrels, and permeable pavements.
MAINTENANCE AGREEMENT. A document recorded in the land records that acts as a property deed restriction, and which provides for long-term maintenance of stormwater management practices.
MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4). The conveyances owned or operated by the municipality for the collection and transportation of stormwater, including roads and streets, and their drainage systems, catch basins, curbs, gutters, ditches, human-made channels, and storm drains.
NON-STORMWATER RUNOFF. Any runoff other than stormwater.
PERSON. Any individual, corporation, partnership, association, company, or body politic, including any agency of the state and the United States government.
POLLUTANT. Dredged spoil, solid wastes, incinerator residue, filter backwash, sewage, garbage, sewage sludge, munitions, chemical wastes, biological materials, radioactive materials, heat, wrecked or discarded equipment, rocks, sand, cellar dirt, industrial, municipal and agricultural wastes, 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, articles, and accumulations, that 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 (including, but not limited to, sediments, slurries, and concrete resinates); and noxious or offensive matter of any kind.
REDEVELOPMENT. Alterations of a property that change the footprint of a site or building in such a way that disturbs one-tenth acre of land or more.
RETENTION BASIN. A storage site similar to a detention basin, but the water in storage is permanently obstructed from flowing downstream.
STORM DRAIN. A closed conduit for conducting collected stormwater.
STORM SEWER SYSTEM. The system of conveyances (including sidewalks, roads with drainage systems, municipal streets, catch basins, detention basins, curbs, gutters, ditches, human-made channels, sumps, storm drains, and groundwater) owned and operated by the city, which is designed and used for collecting or conveying stormwater.
STORMWATER. Any flow that occurs during or following any form of natural precipitation. STORMWATER includes only the portion of such flow that is composed of precipitation.
STORMWATER RUNOFF. Water that is generated by stormwater flows over land.
SUMP. A formalized underground structure, surrounded by drain rock, that acts as a detention basin to allow the slow release of water into the surrounding subsoil. SUMPS usually receive stormwater runoff from paved areas such as streets, parking lots, building roofs, and the like.
SURFACE WATER. All open water bodies, streams, lakes, ponds, marshes, wetlands, watercourses, waterways, springs, drainage systems, and all other bodies or accumulations of water on the surface only.
SWPPP (STORMWATER POLLUTION PREVENTION PLAN). The set of drawings and other documents that comprise all the information and specifications for the programs, drainage systems, structures, BMPs concepts, and techniques intended to maintain or restore quality and quantity of stormwater runoff to pre-development levels during and after construction.
UTAH POLLUTANT DISCHARGE ELIMINATION SYSTEM (UPDES). The state’s program for issuing, modifying, revoking and reissuing, terminating, monitoring, and enforcing permits, and for imposing and enforcing pretreatment requirements, under §§ 307, 102, 318, and 405 of the Clean Water Act (CWA), being 33 U.S.C. §§ 1317, 1252, 1328, 1345, respectively, for the discharge of pollutants to waters of the state. This program is specifically designed to be compatible with the federal National Pollutant Discharge Elimination System (NPDES) program established and administered by the EPA.
(Prior Code, § 13.22.010) (Ord. 43-2019, passed 12-18-2019; Ord. 17-2020, passed 5-20-2020)