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HomeMy WebLinkAboutSDP202100039 Review Comments Initial Site Plan 2021-07-02t� OF ALB County of Albemarle COMMUNITY DEVELOPMENT DEPARTMENT Site Plan review 401 McIntire Road, North Wing Charlottesville, VA 22902-4579 Telephone:434-296-5832 WWW.ALBEMARLE.ORG Project title: Overlook Hotel — Initial Site Plan (ISP) Project file number: SDP202100039 Plan prepares Shimp Engineering, Justin M. Shimp [ lustin(cr�shimp-en�ineerin�.com ] Kelsey Schlein [ kelsey2Shimp-en ing eering com ] 912 E. High St. Charlottesville, VA 22902 Owner or rep.: WS Four LLC, 3600 Pacific Avenue, Virginia Beach, VA 23451 [ doug2subcap.com ] Plan received date: 19 May 2021 Date of comments: 2 Jul 2021 Plan Coordinator: Andy Reitelbach Reviewer: John Anderson Engineering has reviewed the initial site plan and offers these review comments. Given relative extent of comments, Engineering recommends against initial site plan approval. C4: 1. Tiered wall height along north parcel boundary exceeds max. wall height (6') for retaining walls constructed on managed steep slopes [18-30.7.5.A.1.] 2. Offsite grading proposes to erase an existing natural drainage feature that conveys off -site runoff from U.S. Rt. 250 and largely impervious development east of Overlook Hotel. Photos of natural drainage are available. 3. Initial site plan proposes extensive off -site grading on TMP 78-13A, without, to our knowledge, preliminary assurance that off -site permanent grading easement can be obtained. Engineering recommends against approval of initial site plan without preliminary written assurance that a permanent off -site grading easement may be obtained, since this design relies on off -site grading. 4. Revise ISP to avoid drop inlet /storm pipe - retaining wall conflict (highest tiered wall north of hotel). 5. ISP proposes to discharge runoff via 15" CMP to an existing 20' drainage easement (DB 2456 PG 689), which is the existing natural drainage way mentioned elsewhere. ISP must provide at least initial data concerning carrying capacity of the existing natural drainage way relative to additional runoff from Overlook Hotel, given that proposed design appears to entirely obscure the drainage way. 6. Provide transit across TMP 78-13A for runoff from U.S. 250 and points east that currently transits via existing natural drainage way. 7. Tiered retaining walls south of hotel (if rely on geogrid) require permanent maintenance /access easement since geogrid will extend onto TMP 78-73131. Similar to permanent off -site grading, initial site plan should famish evidence of preliminary approval with property owner to the south that a permanent access /wall maintenance easement is likely to be obtained by Overlook Hotel development. 8. Storm lines downstream of SWM facilities are within public drainage easement. Engineering does not accept storm lines within public drainage easement that cross retaining walls, revise to avoid storm lines within public drainage easement that cross retaining walls. 9. Obtain private sanitary easement across TMP 78-13A. Engineering Review Comments Page 2 of 2 C3: 10. Dumpster appears inaccessible to waste management vehicles. Provide auto -turn using wheelbase for typical waste management vehicle that would likely service the property, to show that design alignment is not problematic. 11. Provide bumper blocks for 14 parking spaces fronting retaining wall south of hotel. 12. Provide guardrail for all parking spaces that front north or west edge of parking lot on hotel site, since these parking spaces front tiered retaining walls with vertical drop intervals ranging 14 to nearly 30 feet in height. C2: 13. Show, depict, label any existing easements on TW 78-73A7, Overlook Hotel development parcel. 14. Tree conservation area and Landscape Easement appear in conflicts with proposed development, clarify how development is to occur given likely limits imposed by tree conservation area and landscape easements. Cl: 15. LiDAR data may not be used to design physical improvements (retaining walls, for example), unless sealed by a licensed surveyor. Provide LS-seal for design of any physical improvements that rely on LiDAR data. General 16. Submit WPO plan at earliest convenience. WPO plan approval is required prior to final site plan approval. 17. Revise ISP to indicate type of underground (water quality) treatment system that may be utilized. A range of options exist, but `underground storrnwater treatment and detention structures' label lacks even conceptual specificity. It is unclear whether or how this development will meet storm runoff water quality or quantity requirements, especially as it appears this development will be required to meet energy balance at point Please feel free to call if any questions: 434.296-5832 -x3069 Thank you J. Anderson SDP2021-00039 Overlook Hotel ISP 070221