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Home My WebLink AboutSDP202100065 Correspondence 2021-07-26 (2)SHIMP ENGINEERING, P.C. Design Focused Engineering July 26, 2021 John Anderson County of Albemarle Department of Community Development 401 McIntire Road, North Wing Charlottesville, Virginia 22902 RE: Response Letter #1 for SDP2020-66 Albemarle Business Campus — Initial Site Plan Albemarle Business Campus: Multifamily Dear John, Thank you for your review of the initial site plan for Albemarle Business Campus. This letter contains responses to County comments dated December 18, 2020. Comments resolved with SDP2021-22 Albemarle Business Campus: Self -Storage are sWaek thFeugh, as they are not applicable to this Block 1 Multifamily Final Site Plan. Our responses are as follows: 2. It appears that design relies on fewer parking spaces than required by ordinance. There is potential for ISP disapproval with significant revision required prior even to approval of ISP (with conditions). RESPONSE: Comment received. We are working through a parking reduction request with Zoning. N i.lam, .111 4. C5, C6 a. Label managed steep slopes. RESPONSE: Managed steep slopes are now labeled on the existing conditions page. 912 E. High Sr. Charlottesville, VA 22902 1434.227.5140 1 shimp-engineering.com 6. C7 a. Recommend provide sidewalk access to westernmost 24-apt 3-story building via internal sidewalk rather than walk within public RW along Country Green Road since this is facility to be used by residents for every trip between vehicle and apartment. This route so near a public road provides inherent risk, risk analogous to requiring owners of single- family dwellings to transit walk within public RW to travel between parked car in driveway and dwelling entrance. RESPONSE: Comment received. Internal sidewalk access is provided to all multifamily buildings. b. If apartment building access is via sidewalk along Country Green Road and ordinance requires illumination from parking to dwelling entrance, provide adequate lighting. Engineering defers to Planning, while reiterating safety concerns for residents if forced to rely on a walk within public RW of Country Green Road. RESPONSE: Comment received. Pedestrian access is provided internally for this structure. c. Label site entrance radii and relevant entrance geometry. RESPONSE: Site entrance radii and relevant entrance geometry are now labeled on the site plan sheet. 7. C7. C8 a. Label (typ.) parking space length. RESPONSE: Parking space length (18') is now included. b. Label parking lot island radii. RESPONSE: Parking lot island radii are now labeled on the site plan sheet. c. Provide, label and revise or reconfigure parking to provide adequate HC parking, with ramps. RESPONSE: Handicap parking spaces are shown with this submission. d. Label CG-12. RESPONSE: CG-12's are shown and labeled on the site plan sheet. e. Label CG-6. RESPONSE: CG-6's are shown and labeled on the site plan sheet. f. Provide /show /label dumpster pads for each use. No use appears likely able to function without permanent outdoor solid waste disposal, with possible exception of self -storage, Yet self -storage patrons may wish to avail themselves of trash facility, which may or may not be required. Hotel, office, and retail space typically (likely) require dumpster pads. Engineering defers to Planning. RESPONSE: Comment received. Two dumpster pads are provided within the multifamily block. g. Please ensure that all parking spaces immediately adjacent to sidewalks are either: 912 E. High St.. Charlottesville, VA 22902 1434.227.51401 shlmp-engineenrig.rom i. 18' L fronting 6' sidewalks, or ii. 18' L with bumper blocks fronting 5' sidewalks (ref. ACDSM, pg. 17). RESPONSE: Comment received. Please see the labeled parking space lengths and sidewalks with this submission. �7 KV �7�1 \CV !✓,.R51!f!^Cl5RT.R! flRl!!!!S/:l:7.E!!!'!!!75lSf 1-f.! . •�Y� 10. CIO a. Provide spot grading near islands to ensure runoff reaches inlets without nuisance ponding. RESPONSE: Comment received. Some spot grading is provided on the grading plan, we need to add more but this will be finalized with the WPO application. Additionally, islands have been revised to allow runoff is not blocked by runoff. b. Clarify how proposed UG detention and inlet conveyance system discharge to existing SWM infrastructure. If discharge is via storm pipe between the two 28-apt buildings to property to the immediate west, with WPO show compliance with channel and flood protection at this discharge point. RESPONSE: Another Block 1 WPO2018-00044 amendment is being prepared and will be submitted. This comment is addressed because the new strategy will completely avoid this downstream BMP and will outlet into a natural channel (after 1 short length of 912 E. High St.. Charlottesville, VA 22902 1434.227.51401 shlmp-engineenrig.rom existing storm drain. Compliance with applicable regulations will be provided with WPO application. c. Provide flowlines that clarify direction of flow in storm pipes. RESPONSE: Flowlines have now been provided. Please see the utility plan sheet. d. Label underground detention system. RESPONSE: Underground Detention Systems are labelled. 11. CIO, Cl1 a. Show /label proposed utility easements. i. Recommend label private drainage easements. RESPONSE: Private drainage easements are not proposed at this time. Public drainage easements shown. ii. Label public drainage easement downstream of proposed SWM facility. RESPONSE: Public drainage easements are now labeled on the site plan. iii. Public SWM facility and public drainage easements require plat with deed, and recordation prior to FSP approval. RESPONSE: Comment received. iv. Acquire and reference recorded public drainage easement across TMP 76-46C 1 (Mountainwood Properties) that receives ABC development runoff. RESPONSE: This is no longer applicable, as runoff does not drain into this property. v. Ensure post -developed storm runoff across TMP 76-46C 1 is non -erosive. RESPONSE: This is no longer applicable, as runoff does not drain into this property. b. Ensure easement widths are consistent with easement width diagram, p. 15, ACDSM. RESPONSE: Noted, drainage easement widths are consistent with diagram. 12. C11 ponding- RESPO S& This was add.essed with 3xro0202000058 912 E. High St.. Charlottesville, VA 22902 1434.227.51401 shlmp-engineenrig.rom g. Retaining walls >3' ht. require a building permit. Retaining walls >4' ht. require sealed design (PE) plans. Retaining wall design review by Engineering is required prior to FSP approval. RESPONSE: Noted, we have hired Circeo Geotechnical Engineering to complete a design for the walls above 4' height, it will be uploaded when received. 13. C12: Provide horizontal sight distance that avoids landscape /sight line conflicts. RESPONSE: Comment received. Sight distance has been provided at the new entrance on Country Green Road. The speed limit on County Green Road is 30 mph, and the required distance is 335'. This plan and profile is located on C13. If you have any questions or concerns about these revisions, please feel free to contact me at Keane@shimp-en 'ngt eerin,g com or by phone at 434-227-5140. Regards, Keane Rucker Shimp Engineering, P.C. 912 E. High St.. Charlottesville, VA 22902 1434.227.51401 shimp-engineenrig.rom