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HomeMy WebLinkAboutSDP202200015 Correspondence 2022-05-11SHIMP ENGINEERING, P.C. Design Focused Engineering May 11, 2022 John Anderson, PE County of Albemarle Department of Community Development 401 McIntire Road, North Wing Charlottesville, Virginia22902 RE: Response Letter #1 for SDP2022-15 SOUTH PANTOPS MULTIFAMILY ISP Dear John, Thank you for your review of the initial site plan for South Pantops Multifamily. This letter contains responses to County comments dated May 6, 2022; specifically these responses relate to the comments that must be addressed prior to ISP approval. Our responses are as follows: For Initial Site Plan (ISP) approval: a. Revise conceptual SWM location from proposed location to area further north near 2-tier retaining wall where SWM facility inlet pipe may skirt retaining walls, an area clear of steep slopes, and where SWM facility outfall may cross preserved steep slopes to connect with natural channel terrain features further NW. RESPONSE: Thanks for this comment, please see Sheets 4 and 5 of the plan which depict a revised conceptual SWM location north of the two tier retaining wall. b. Note: SWM facility outfall pipe requires public drainage easement, and public drainage easement will not be approved beneath /under approximate 25-ft. high stepped retaining walls. Please consult Vistas at South Pantops approved Initial Site Plan (SDP201800018, sheet ISP5, approved 4/26/18) for approvable stormwater conveyance corridor across preserved steep slopes; present similar with revised ISP. RESPONSE: The outfall location is now shown on the plan. Please see Sheets 4 and 5 of the plan for a revised retaining wall configuration which provides conveyance to the stormwater facility without projection through retaining wall. This allows flexibility for future design, in the event underground detention is needed, and the outfall further upstream requires a public drainage easement with final design. If you have any questions or concerns about these revisions, please feel free to contact me at kelsakshimp-en ing eering com or by phone at 434-227-5140. Regards, Kelsey Schlein Shimp Engineering, P.C. 912 E. High St. Charlottesville, VA 22902 1434.227.5140 1 shimp-engineering.com