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Article 7: Subdivisions Section 7.6: General Design Standards Orange County, North Carolina – Unified Development Ordinance Page 7-9 (1) Each lot that does not contain a suitable building site shall be designated on the plat as being of restricted development potential and by instrument recorded in the Orange County registry as specifically prescribed by Section 7.1 34.3(E)(1) of this Ordinance. (E) Drainage (1) Soil suitability, including slope and drainage, shall also be evaluated according to soil characteristics indicated by the Orange County Soil Survey and topography indicated by the U.S. Geological Topographic Maps. (2) Each lot shall contain a suitable building area safe from inundation and erosion. (3) Sanitary sewer systems, septic tank drainfields, water systems, wells, and adjacent properties shall be protected from inundation by surface water. (4) Roads, driveways and utilities shall be protected from damage caused by improper stormwater management. (5) Mechanical devices, drainage easements, natural buffers, large lots, and/or other technical means may be used to achieve these drainage objectives. Natural drainageways are a preferred means of stormwater run-off removal. The characteristics (including capacity) of natural drainageways shall be protected. (6) Runoff levels from the 25-year storm after the site is developed shall not be greater than the rate of runoff on the same site in its natural state. (7) In cases where anticipated land disturbance for the subdivision and the proposed lots will cumulatively exceed established thresholds denoted within Section 6.14.5 of this Ordinance, a formal stormwater management plan shall be required as part of the application submittal. (F) Resource Protection (1) Applications for subdivision shall be evaluated by the Planning Department and Planning Board for potential impairment of habitat of rare and endangered species or unique natural areas. (2) A strategy shall be developed to protect resources listed by the North Carolina Heritage Program, or identified in "An Inventory of Sites of Cultural, Historic, Recreational, Biological, and Geological Significance in the Unincorporated Portions of Orange County" or "Inventory of the Natural Areas and Wildlife Habitats of Orange County, North Carolina". (a) The strategy shall provide protection of identified natural and cultural resources from impacts which could result from development of the subdivision, and shall include one or more of the following: (i) Dedication of conservation easements,; (ii) Restrictive covenants prohibiting clearing or disturbance of the resource areas,; (iii) Dedication of resource areas to Orange County,; (iv) Clustering of lots to minimize land disturbance,preserve the special features of the property promote Common Open Space, and preserve areas and other environmentally sensitive areas, of the property,; and (v) Other restrictions or development options which provide an adequate level of protection. (3) The Planning Department shall review available documentation of the particular site and determine if the proposed strategy adequately protects the identified resources. 34