For the purpose of this chapter, the following definitions shall apply unless other provisions of this chapter specifically indicate otherwise.
Built-upon area (BUA). Has the same meaning as in G.S. 143-214.7(b2).
City. The City of Greenville, North Carolina.
City Engineer. The City Engineer of the City of Greenville, North Carolina.
Common plan of development. Has the same meaning as in 15A NCAC 02H .1002(8).
Detention facility. A facility, constructed for the purpose of detaining stormwater runoff from a developed site to control the peak discharge rates. A detention facility does not provide water quality treatment the way a Stormwater Control Measure (SCM) does.
Development. Has the same meaning as in G.S. 143-214.7(a1)(1).
Development approval. Has the same meaning as G.S. 160D-102(13).
Ditch. An open channel constructed to transfer stormwater from one area to another. This does not include any open channel that is classified as a perennial or intermittent stream or a swale.
Drainage easement. A written, recorded easement granted for the installation and maintenance of the stormwater drainage system and/or along a natural stream or watercourse for preserving the channel and providing access for maintenance and operation.
Drainage requirements.
(1) Minimum drainage standards as established by this chapter;
(2) Regulations promulgated by the Public Works Department or Engineering Department of the city;
(3) Obligations and requirements relating to drainage established under the Subdivision Control Ordinance of the city, as set forth in Title 9, Chapter 5;
(4) Requirements stated under the Zoning Ordinance of the city as set forth in Title 9, Chapter 4, including floodway zoning requirements; and
(5) Conditions relating to drainage attached to a grant of variance by the Board of Adjustment of the city.
Dispersed flow. Has the same meaning as in 15A NCAC 02H .1002(13).
Existing built-upon area. The built-upon area or net equivalent amount of built-upon area resulting from existing development.
Existing development. Has the same meaning as in 15A NCAC 02H .1002(17).
Exposure of prohibited substances. Any unlawful disposal, placement, emptying, dumping, spillage, leakage, pumping, pouring, emission or other discharge of any substance other than stormwater, unless associated with permitted activity as identified in section 9-9-16(A), upon the land in such proximity to the stormwater drainage system, such that the substance is likely to reach the stormwater drainage system.
Extraterritorial jurisdiction. The area beyond the city limits within which the planning, zoning and building regulations of the city apply in accordance with state law. The area is delineated on the official zoning map for the city.
Illicit connection. Any unlawful connection that allows the discharge of prohibited non-stormwater to the stormwater drainage system in violation of this chapter.
Illicit discharge. Any unlawful disposal, placement, emptying, dumping, spillage, leakage, pumping, pouring, emission or other discharge of any substance other than stormwater, unless associated with permitted activity as identified in § 9-9-16(A), into the stormwater drainage system.
Jurisdictional stream. A stream that has been determined to be either perennial or intermittent by the North Carolina Department of Environmental Quality (NCDEQ) or the United States Army Corps of Engineers (USACE).
Land-disturbing activity. Any use of the land by any person in residential, industrial, educational, institutional or commercial development, highway and road construction and maintenance that results in a change in the natural cover or topography and that may cause or contribute to sedimentation.
Like-new condition. Used to describe a compliant stormwater control measure at the warranty inspection. The SCM shall have no visible erosion or accumulation of sediment, proper established vegetation per the design, and be functioning as designed.
Major variance. Any variance of this chapter that is not a "minor variance" as that term is defined in this section. For any provisions in this chapter that are more stringent than the minimum applicable Neuse (15A NCAC 02B .0711) or Tar-Pamlico (15A NCAC 02B .0731) rules, a variance to this chapter is not considered a major variance as long as the result of the variance is not less stringent than the minimum requirements of those rules.
Manual of Standard Details and Design (MSDD). The most current published version of the city's Manual of Standard Details and Design approved by the City Engineer.
Minimum Design Criteria (MDC). The requirements stated in 15A NCAC 02H .1050 through .1062.
Minor variance. A variance from the minimum applicable Neuse or Tar-Pamlico Stormwater Rules that results in the relaxation of up to 10% of any density, or minimum lot size requirement applicable to low density development, or the relaxation of up to 5% of any density, or minimum lot size requirement applicable to high density development.
Municipal separate storm sewer system (MS4). Pursuant to 40CFR 122.26(b) a system of conveyance (including without limitation: roads with drainage systems, municipal streets, catch basins, stormwater detention facilities, curbs, gutters, ditches, natural or man-made channels, or storm drains), that:
(1) Is located within the corporate limits of Greenville, North Carolina;
(2) Is owned or operated by the city;
(3) Discharges to waters of the state or another municipal system, excluding publicly owned treatment works, and lawful connections thereto, which in turn discharge into the waters of the state;
(4) Designed or used for collecting or conveying stormwater;
(5) Which is not a combined sewer; and
(6) Which is not part of a Publicly Owned Treatment Works (POTW) as defined in 40 GFR 122.2.
NCDEQ. North Carolina Department of Environmental Quality.
NPDES or National Pollutant Discharge Elimination System. A program implemented pursuant to the Federal Water Pollution Control Act and corollary state law by NCDEQ to eliminate the discharge of pollutants to waters of the United States and waters of the state.
One-year, five-year, ten-year and 25-year, 24-hour storm events. The maximum amount of rainfall during a 24 consecutive hour period expected, per the stated interval, as determined by the National Oceanic and Atmospheric Administration (NOAA) Precipitation Frequency Data Server (PFDS).
Ordinance. This chapter - the Stormwater Management and Control Ordinance.
Pollutant. Has the same meaning as in 33 U.S.C. 1362(6).
Primary SCM. Has the same meaning as in 15A NCAC 02H .1002(37).
Private drainage. Any portion of the stormwater drainage system that is not "public drainage" as defined in this section.
Project. Has the same meaning as in 15A NCAC 02H .1002(38).
Public drainage. Any portion of the stormwater drainage system that conveys "public runoff" as defined in this section, excluding stormwater control measures and detention facilities not owned or operated by the city.
Public runoff. Stormwater runoff wholly or partially from publicly owned rights-of-way, owned or operated by the city or North Carolina Department of Transportation (NCDOT), and from city-owned property.
Qualified professional. As determined by the Stormwater Administrator an individual who both: has received a baccalaureate or postgraduate degree in the natural sciences or engineering; and is trained and experienced in stormwater treatment techniques and related fields as may be demonstrated by state registration, professional certification, or completion of coursework that enable the individual to make sound, professional judgments regarding stormwater control/treatment and drainage planning and subject to the requirements of section 9-9-21.
Record drawings. A set of plan drawings from site survey information reflecting actual development as it was constructed. Minimum information to be included in the record drawings is established in the City of Greenville Manual of Standard Designs and Details.
Redevelopment. Has the same meaning as in G.S. 143-214.7(a1)(2).
Registered professional. An individual who is registered in the State of North Carolina as a professional engineer.
Riparian buffer. The 50-foot wide area directly adjacent to surface waters in the Tar-Pamlico and Neuse River Basins (intermittent streams, perennial streams, lakes, ponds and estuaries), excluding wetlands. For the purpose of this definition, a surface water shall be present if the feature is approximately shown on either the most recent version of the soil survey map by the Natural Resources Conservation Service of the United States Department of Agriculture or the most recent version of the 1:24,000 scale (7.5 minute) quadrangle topographic maps prepared by the United States Geologic Survey (USGS).
Stormwater. Has the same meaning as defined in G.S. 143-213(16a).
Stormwater Administrator. The City Engineer or his or her designee responsible for all decisions concerning application and enforcement of the stormwater management and control ordinance, programs, and policies and any matters related to the program.
Stormwater Control Measures (SCMs). Has the same meaning as 15A NCAC 02H .1002(49).
Stormwater drainage system. The system of natural features and constructed devices that collect and transport stormwater. Those include, but are not limited to, swales, ditches, swamps, rivers, streams, creeks, branches, lakes and reservoirs, ponds, inlets, catch basins, pipes and drains, culverts and head walls.
Stormwater management program. Program designed to protect water quality by controlling the level of pollutants in, and the quantity and flow of, stormwater.
Surface drainage. A system by which the stormwater runoff is conducted to an outlet. This would include the proper grading of parking lots, streets, driveways and yards so that stormwater runoff is removed without ponding and flows to the stormwater drainage system.
Swale. A natural or constructed waterway, usually broad and shallow, covered with erosion-resistant grasses, used to convey surface water from a field, diversion or other site feature.
(1) A swale for the sole purpose of conveyance shall have characteristics as identified in the MSDD.
(2) A treatment swale for the purpose of water quality treatment shall be classified as a stormwater control measure and shall meet the minimum design criteria as established in 15A NCAC 2H .1061.
Vegetated conveyance. Has the same meaning as in 15A NCAC 02H .1002(52).
Watershed master plan(s). Detailed hydraulic studies completed by the City of Greenville to evaluate existing flooding, water quality, and erosion problems, recommend and prioritize stormwater capital improvements, and map and inventory existing stormwater drainage system components. These plans include: Greens Mill Run Watershed Master Plan, Swift Creek Watershed Master Plan, Fork Swamp Watershed Master Plan, Hardee Creek Watershed Master Plan, Harris Mill Run/Schoolhouse Branch Watershed Master Plan, Parkers Creek/Johnsons Mill Run Watershed Master Plan, and Meetinghouse Branch Watershed Master Plan.
Waters of the state. Has the same meaning as in G.S. 143-212(6).
(Ord. No. 24-021, § 1, passed 4-11-2024)