Agenda - 04-23-2013 - 7b - Laserfiche WebLink

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4 • Access to Lot 7 will require a stream crossing. Both Planning and NCDOT staff discussed the viability of having a driveway off Whitfield Road to serve this lot and avoid a stream crossing. Unfortunately, it was determined direct access off Whitfield Road would create other issues and was not viable due to separation from adjoining roadways and safety concerns (i.e. sight visibility). STAFF COMMENT: The proposed crossing is consistent with the provisions of Section 6.13 Stream Buffers of the UDO. Utilities — Water and Sewer: The project will be served by individual wells and septic systems. Sheet C3.0 of the preliminary plat denotes anticipated locations for well and septic sites. At the March 6, 2013 Planning Board meeting, a Board member asked if septic areas denoted on the plat could be `moved closer' to designated home sites to avoid unnecessary clearing. Both the applicant and staff indicated the areas shown on the plat were approximate locations for septic and repair areas and were not intended to denote the exact location for the systems, their anticipated size, or to define clearing limits. The applicant indicated clearing of property would be kept at a minimum and septic systems could be `moved closer' to designated home sites as suggested. STAFF COMMENT- Orange County Environmental Health has indicated preliminary approval for the proposed septic and well system locations. Stormwater Drainage: Drainage will be conveyed through a curb and gutter system located within the proposed road rights-of-way. At the March 6, 2013 Planning Board meeting, a Board member expressed concern over the proposed stormwater management system and asked if there was an opportunity to require grass swales instead of curb and gutter. The Board member also expressed concerns over local wildlife, such as turtles and salamanders, being able to navigate the proposed system and suggested grassed swales would be more appropriate. Both the applicant and staff indicated the curb and gutter system was proposed as part of the Concept Plan, approved by the Planning Board at its November 7, 2012 regular meeting and the system was necessary to address compliance issues with recently established stormwater management standards. As part of the proposed stormwater management system, the applicant has voluntarily reduced the maximum allowable impervious surface area for the entire project (i.e. roadways, driveways, and all buildings under roof) to 10.7% or 169,937 sq. ft., in order to comply with Section 6.14.7 Stormwater Management— Nutrient Load of the UDO. STAFF COMMENT- Orange County Erosion Control has indicated the project complies with applicable stormwater regulations. Please refer to Attachment 3 for additional information. Open Space: Per Section 7.13.3 (C) (1) and (2) of the Orange County Unified Development Ordinance (UDO) open space for the project is broken down as follows: PRIMARY: • Wetlands including but not limited to streams, creeks, ponds, reservoirs, etc.: 6.76 acres of open space around an existing stream. SECONDARY: