Unified Development Ordinance, 31st Supplement, May 2024

Article 12.2. Defined Terms | CHAPTER 12. DEFINITIONS

Discharge Point That point at which runoff leaves a tract of land. Display Area

include facility construction management, roadway design and construction, facility maintenance, vehicle fleet services, and stormwater management.

Engineering Services Director The chief administrator as designated by the City Manager to plan, direct and coordinate the operations of the department. Ephemeral (Stormwater) Stream A feature that carries only stormwater in direct response to precipitation with waters flowing only during and shortly after large precipitation events. An ephemeral stream may or may not have a well-defined channel, the aquatic bed is always above the water table and stormwater runoff is the primary source of water. An ephemeral stream typically lacks the biological, hydrological and physical characteristics commonly associated with the continuous or intermittent conveyance of water. Excessively Trimmed The pruning, cutting, or otherwise damaging the natural form of a tree when it meets one or more of the following: 1. Removes more than 25% of the crown system of a tree within a continuous five-year period. 2. Removes, cuts or covers more than 25% of the root system of a tree within a continuous five-year period. 3. Fails to conform to the pruning cuts methods set forth in the current edition of "Tree, Shrub, and Other Woody Plan Maintenance - Standard Practices" of the American National Standards Institute. 4. Is made for a purpose other than "hazard pruning," or "utility pruning," or "maintenance pruning," as set forth in the current edition of "Tree, Shrub, and Other Woody Plant Maintenance - Standard Practices" of the American National Standards Institute. 5. Is crown reduction, heading, vista pruning, or pollarding as set forth in the current edition of "Tree, Shrub, and Other Woody Plant Maintenance - Standard Practices" of the American National Standards Institute.

An outdoor open air area where merchandise is stored throughout the day and night and this same stored merchandise is sold or leased, not including the display area for any motor vehicle, trailer or semi-trailer (see vehicular display area). Drainage Basin Study Maps Flood hazard boundary maps adopted by the City. Special flood hazard areas and the base flood elevations shown on drainage basin study maps are based on future conditions hydrology. Dwelling Unit A building or portion of a building providing complete and permanent living facilities, including cooking and bathing facilities. e Elevated Building An above-ground building built to have the top of the elevated floor above the ground by means of pilings, columns (posts and piers), shear walls parallel to the flow of water; and adequately anchored so as not to impair the structural integrity of the building during a flood up to the magnitude of the base flood. Elevated building also includes a building elevated by means of fill or solid foundation perimeter walls with openings sufficient to facilitate the unimpeded movement of floodwaters. Energy Dissipator An adequate erosion control measure placed at the outlets of storm drainage facilities or at other points as specified by this chapter to receive and breakdown the energy from high velocity flow. Engineering Services Department The Engineering Services Department is responsible for overseeing the design and construction of roadway, stormwater and facility improvement projects to ensure the safety and sustainability through diligent review and thorough inspections as well as cost effective maintenance of existing system components. Services

Erosion The wearing away of the land surface by the action of wind, water, gravity or any

12 – 7 Published May 2024

Part 10: Unified Development Ordinance City of Raleigh, North Carolina

Supp. No. 31