Unified Development Ordinance, 4th supplement, September 2017
Part 10A: Unified Development Ordinance City of Raleigh, North Carolina 12 – 10 Effective Date: September 01, 2013 Supp. No. 2 CHAPTER 12. DEFINITIONS | Article 12.2. Defined Terms I High-Quality Waters Waters classified in title 15A North Carolina Administrative Code chapter 2B section .0101(e)(5) - General Procedures and amendments thereto, all of which is incorporated by reference. High-Quality-Water (HQW) Zones Those areas that are within both 1 mile and drain to high-quality waters. Historic Landmark A building, site or object that has been designated by the City Council as either a historic site, property or landmark. Hospital One or more buildings or structures located on the same lot primarily devoted to the rendering of health, medical and nursing care to persons on an in‐patient basis and which provide facilities and services of a scope and type customarily provided by hospitals, which may include facilities for intensive care and self‐care; clinics and out‐patient facilities; clinical, pathological and other laboratories; health care research facilities; laundries; training facilities for nurses, interns, physicians and other staff members; food preparation and food service facilities; administration buildings, central service and other administrative facilities; medical office facilities owned and operated by the hospital for physicians who are members of the hospital medical staff; and other general hospital facilities. Household One or more persons occupying a dwelling unit, provided that unless all members are related by blood, marriage or adoption, no household shall contain more than 4 unrelated persons. A household may include 5 or fewer foster children placed in a family foster home licensed by the State of North Carolina. i Impervious Surface Any material that significantly reduces and prevents natural infiltration of water into the soil. Impervious surfaces include but are not limited to roofs, patios, balconies, decks, streets, parking areas, driveways, sidewalks and any concrete, stone, brick, asphalt or compacted gravel surfaces. The effective impervious coverage for certain surfaces listed below are as follows: 1. Asphalt, concrete, crusher-run gravel, masonry, marl, wood and other impermeable surfaces that prevent land area from infiltrating stormwater are 100% impervious. 2. Porous surfaces that permit direct infiltration of unconcentrated stormwater into ground areas which are prepared in accordance with plans approved by the Inspections Department of the City so that the first one-half inch of stormwater infiltrates into the ground are 70% through 10% impervious, depending on: a. Compaction; b. Condition of subgrade; c. Extent of land disturbance; d. Extent of porous openings; e. Protection from siltation and clogging; f. Slope of the ground area; and g. Volume of stormwater stored. 3. Slatted wood decks that allow the drainage of water through the slats to an unpaved surface below are 50% impervious. If the area covered by the deck is washed gravel, the deck is 30% impervious. 4. Ungraveled natural footpaths, water surfaces of swimming pools and drainfields are 0% impervious. 5. All other necessary determinations about impervious surfaces will be based on hydrological tests based on existing subgrade soils, slope, rainfall intensity and rainfall duration. Indigenous/Locally Adapted Species Plant and animal life forms which are naturally found in the State of North Carolina.