For the purpose of this Chapter 961, the following terms shall have the meaning herein indicated:
(a) “As-built survey” means a survey shown on a plan or drawing prepared by a Registered Surveyor in Ohio indicating the actual dimensions, elevations, and locations of any structures, underground utilities, swales, detention facilities, and sewage treatment facilities
after construction has been completed.
(b) “Comprehensive Stormwater Management Plan” means the written document and plans meeting the requirements of Chapter 961 that describes and specifies practices, facilities and improvements to minimize stormwater runoff from a development area, to safely convey or temporarily store and release post-development runoff at a rate that minimizes flooding and stream bank
erosion, and protects or improves stormwater quality and stream channels.
(c) “Development area” means a parcel or contiguous parcels in a common ownership and operated as one development unit, and which is the site of construction or alteration activities that changes runoff characteristics.
(d) “Development drainage area” means a combination of each hydraulically unique watershed with individual outlet points on the development area.
(e) “Drainage” means the removal of surface water or groundwater from land by surface or subsurface drains.
(f) “Erosion” means the process by which the land surface is worn away by the action of wind, water or other liquid, ice, gravity, or any combination of those forces.
(g) “Final stabilization” means all soil disturbing activities at the site have been completed and a uniform perennial vegetative cover with a density of at least 80% coverage for the area has been established or equivalent stabilization practices, such as the use of mulches or geotextiles, have been employed.
(h) “Grading” means the process in which the topography of the land is altered to a new slope.
(i) “Illicit discharge” means any discharge to the Stormwater System not composed entirely of stormwater except the following: water line flushing, landscape irrigation, diverted stream flows, rising ground waters, uncontaminated ground water infiltration [as defined at 40 CFR 35.2005(b)(20)], uncontaminated pumped ground water, discharges from potable water sources, foundation drains, air conditioning condensation, irrigation water, springs, water from crawl space pumps, footing drains, lawn watering, individual car washing, charity car wash events, flows from riparian habitats and wetlands, dechlorinated swimming pool discharges, street wash water, home sewer treatment systems that discharge in accordance with Clark County Combined Health District Codes and permits, and discharges or flows from fire fighting activities.
(j) “Impervious surface” means any surface meeting the definition of impervious surface in Chapter 918.02 of these Codified Ordinances.
(k) “Infiltration” means a stormwater management practice that reduces discharge during the precipitation event, requiring collected runoff to either infiltrate into the groundwater and/or be consumed by evapotranspiration, thereby retaining stormwater pollutants in the facility.
(l) “Large common plat of development” means a contiguous area where multiple separate and distinct construction activities may be taking place at different times on different schedules under one plan.
(m) “NPDES” means National Pollutant Discharge Elimination System. A regulatory program in the Federal Clean Water Act that prohibits the discharge of pollutants into surface waters of the United States without a permit.
(n) “Post-development” means the conditions that exist following the completion of soil disturbing activity in terms of topography, vegetation, land use, and the rate, volume, quality, or direction of stormwater runoff.
(o) “Predevelopment” means the conditions that exist prior to the initiation of soil disturbing activity in terms of topography, vegetation, land use, and the rate, volume, quality, or direction of stormwater runoff.
(p) “Professional Engineer” means a professional engineer registered in the State of Ohio.
(q) “Redevelopment” means a construction project on land where impervious surface has previously been developed and where the new land use will not increase the runoff coefficient. If the new land use will increase the runoff coefficient, then the project is considered to be a new development project rather than a redevelopment project.
(r) “Runoff” means the portion of rainfall, melted snow, or irrigation water that flows across the ground surface and is eventually returned to water resources.
(s) “Sediment” means the soils or other surface materials that can be transported or deposited by the action of wind, water, ice, or gravity as a product of erosion.
(t) “Site owner” or “property owner” means any individual, corporation, firm, trust, commission, board, public or private partnership, joint venture, agency, unincorporated association, municipal corporation, county or state agency, the federal government, other legal entity, or an agent thereof that is responsible for the overall construction site.
(u) “Soil disturbing activity” means clearing, grading, excavating, filling, or other alteration of the earth’s surface where natural or human made ground cover is destroyed and that may result in, or contribute to, increased stormwater quantity and/or decreased stormwater quality.
(v) “Stormwater management facility” means a structural or non structual device, basin, infiltration cell, or other system approved by the City of Springfield to collect, convey, and/or manage surface runoff.
(w) “Stormwater system” means the City’s system or network of storm and surface water management facilities as defined in Chapter 918 of these codified ordinances.
(x) “Water resource” means any public or private body of water; including wetlands; the area within the ordinary high water level of lakes and ponds; as well as the area within the ordinary high water level of any ditch, brook, creek, river, or stream having a defined bed and bank (either natural or artificial) which confines and conducts continuous or intermittent flow.
(y) “Watershed” means the total drainage area contributing stormwater runoff to a single point.
(z) “Wetland” means those areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions, including swamps, marshes, bogs, and similar areas (See 40 CFR 232.2, as amended).