Unified Development Ordinance, 4th supplement, September 2017

Part 10A: Unified Development Ordinance City of Raleigh, North Carolina 9 – 33 Effective Date: September 01, 2013 Supp. No. 4 5. Control Sedimentation Control all land-disturbing activities so that such activities are planned and undertaken to prevent off-site sedimentation damage. 6. Manage Stormwater Runoff Manage stormwater runoff when the increase in the velocity of stormwater runoff resulting from a land-disturbing activity can cause accelerated erosion at the point of discharge or receiving watercourse, plans are to include measures to control the velocity at the point of discharge so as to minimize accelerated erosion of the site and sedimentation of the receiving watercourse. 7. Control Operations in Lakes or Natural Watercourses Control land-disturbing activities in connection with construction in, on, over or under a lake or natural watercourse so that such activities are planned and undertaken to minimize the extent and duration of disturbance of the lake or natural watercourse. Natural watercourses should be preserved. B. An erosion and sedimentation control plan may be disapproved if the plan fails to address the foregoing control objectives. C. When deemed necessary by the approving authority, a pre-construction conference shall be held. Sec. 9.4.4. Standards for Land-Disturbing Activity No land-disturbing activity shall occur except in accordance with the following standards; wherever there is a conflict between two or more of these standards, the more stringent regulation is controlling. A. General Requirements 1. Prior Plan Approval a. An erosion and sedimentation control plan must be approved by the PublicWorks Director at least 30 days prior to any land-disturbing activity of more than 12,000 square feet. This does not restrict the initiation of land-disturbing activities when the plan is approved and the permit is issued in less than 30 days from initial submission. b. In any ReservoirWatershed Protection Area or for relocation of any natural watercourse or when off-site sedimentation occurs, an approved erosion and sedimentation control plan is required for land-disturbing activity in areas below 12,000 square feet. c. A surety equal to the cost of clearing, grubbing and reseeding a site shall be paid to the City prior to grading permit issuance. If the property is subject to a continuing violation the City may cash the surety. 2. Protection of Property Persons conducting land-disturbing activity must take all reasonable measures to protect all public and private property from damage caused by land-disturbing activity. 3. NPDES Stormwater Permit for Construction Activity Documentation required under the site National Pollutant Discharge Elimination System (NPDES) stormwater permit for construction activity shall be submitted to the City. B. Adequate Erosion Control Measures Adequate erosion control measures shall be provided in accordance with Sec. 9.2.2.E. C. Design and Performance Standards and Guidelines 1. Copies of design and performance standards which are contained in Guidelines for Land-Disturbing Activities will be published by the City and placed on file in the Office of the City Clerk and the PublicWorks Director. 2. All erosion control plans, erosion control measures, ground covers, maintenance and calculations must be in accordance with the applicable Guidelines for Land-Disturbing Activities and State of North Carolina Erosion and Sediment Control Planning and Design Manual; in the event of any conflict, the more stringent regulation applies. D. Buffer Zones 1. Buffer Zones Generally a. No land-disturbing activity during periods of construction or improvement to land are allowed in proximity to a lake or natural watercourse unless a buffer zone is provided along the watercourse to Article 9.4. Erosion & Sedimentation Control | CHAPTER 9. ​NATURAL RESOURCE PROTECTION Sec. 9.4.4. Standards for Land-Disturbing Activity