For the purposes of this chapter, the following shall mean:
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 state or 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.
BUILDING PERMIT: Permits for alteration or construction (except for fences and detached accessory buildings as exempted by city code) issued pursuant to the provisions of title 9, chapter 1 of this code.
CONVEYANCE SYSTEM: Any channel or pipe for collecting or directing the flow of stormwater.
CULVERT: A covered channel or large diameter pipe that conducts or directs water flow below the ground surface.
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.
DEPARTMENT OF ENVIRONMENTAL QUALITY (DEQ): The state of Utah department of environmental quality.
DISCHARGE: The release of stormwater or other substance from a conveyance system or storage container.
DRAINAGE: The release of stormwater or other substance from a conveyance system or storage container.
EQUIVALENT SERVICE UNIT (ESU): The approximate size of impervious surface area on an average residential lot.
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.
EXCAVATION PERMIT: Permit issued authorizing excavation within Wellsville City pursuant to the provisions and regulations found in title 7, chapter 2 of this code.
FIELD DRAIN: Refers to an underground drainage system installed to drain agricultural fields and typically ends in an irrigation tail water ditch.
FILL: A deposit of earth material placed by artificial means.
GRADING: The cutting and/or filling of the land surface to a desired slope or elevation.
ILLEGAL DISCHARGE: Any direct or indirect nonstormwater discharge to the stormwater system, except discharges from firefighting activities and other discharges exempted by this chapter.
ILLICIT CONNECTION: Any physical connection to the Wellsville City stormwater system allowing discharge of nonstormwater, which has not been permitted by this chapter.
IMPERVIOUS SURFACE: A surface which prevents or retards the penetration of water into the ground, including, but not limited to, roofs, sidewalks, patios, driveways, parking lots, concrete and asphalt paving, and oiled, macadam or other surfaces which similarly impede the natural infiltration of stormwater.
INFILTRATION: The downward movement of water from the surface to the subsoil. The infiltration capacity is expressed in terms of inches per hour.
INGRESS/EGRESS: The points of access to and from a property.
INLET: An entrance into a ditch, culvert or other conveyance structure.
LAND DRAIN: Refers to an underground drainage system installed during the development of a subdivision that is installed within the public right of way and designed to meet city standards and is approved by the city engineer to reduce or limit ground water travel in the vicinity of the drains.
MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4): See Stormwater System.
NONPOINT SOURCE: Pollution caused by diffuse sources (not a single location such as a pipe), such as agricultural or urban runoff.
NOTICE OF INTENT (NOI): Permit issued by the state DEQ for stormwater discharges associated with construction activities under the UPDES General Permits for Construction Activities.
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 stormwater pipe, ditch or other conveyance to a receiving body of water.
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 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 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 resulting from the construction of a building or structure; and noxious or offensive matter of any kind.
RECEIVING WATERS: Bodies of water or surface water systems receiving water from upstream constructed (or natural) systems.
RIPARIAN: A relatively narrow strip of land that borders a stream or river.
RUNOFF: That part of precipitation, snowmelt or irrigation water that runs off the land into streams or other surface water with the potential to carry pollutants from the air and land into the receiving waters.
SEDIMENTATION: The process of depositing soil particles, clays, sands or other sediments that were picked up by runoff.
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: An opening leading to an underground pipe or open ditch for carrying surface runoff.
STORMWATER: Rainfall runoff, snow melt runoff and drainage. It excludes infiltration.
STORMWATER MANAGEMENT CONCEPT PLAN: A document which describes the best management practices and activities to be implemented by a person, business or developer 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.
STORM WATER POLLUTION PREVENTION PLAN (SWPPP): A document outlined in the UPDES General Permits for Construction Activities which describes the general plan for addressing storm water pollutants at a given site. The plan characterizes the nature of the potential pollutants, describes methods and concepts for controlling those pollutants short term and long term and identifies those responsible for the plan. A SWPPP is required to obtain an NOI.
STORMWATER SYSTEM: A municipally owned and operated stormwater collection system consisting of the following: curb and gutter, drainage swales, piping, ditches, canals, detention basins, inlet boxes, land drain systems, field drain systems, or any other system used to convey stormwater that discharges into canals, ditches, streams, rivers or lakes not owned and operated by the municipality.
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 primary drainage channels and allow some of the stormwater to infiltrate into the ground surface.
UPDES PERMIT: An authorization, license or equivalent control document issued by the EPA or an approved state agency to implement the requirements of the NPDES program.
UTAH POLLUTANT DISCHARGE ELIMINATION SYSTEM (UPDES): The State of Utah's program to control the discharge of pollutants to waters of the United States.
WATERS OF THE STATE: Surface and ground water 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. (Ord. 2007-14, 11-7-2007; amd. Ord. 2018-02, 5-16-2018)