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Home My WebLink AboutSDP202100023 Review Comments Major Amendment, Final Site Plan 2021-05-11V 401 McIntire Road, North Wing County of Albemarle Charlottesville, VA 22902-4579 COMMUNITY DEVELOPMENT DEPARTMENT Telephone:434-296-5832 WWW.ALBEMARLE.ORG Site Plan review Project: Dunlora Park Phase II, Final Site Plan Amendment #2 Amendment to SDP201800002 Plan preparer: Scott Collins, Collins Engineering [ scottAcollins-engineering.com ] 200 Garrett St., Suite K, Charlottesville, VA 22902 Owner or rep.: Dunlora Investments, LLC, 455 2nd St. SE, 5t' Floor, Charlottesville, VA 22902 Plan received date: 26 Mar 2021 Date of comments: 11 May 2021 Reviewer: John Anderson Project Coordinator: Cameron Langille SDP2021-00023 1. Sheet 1: a. Please list these associated plans by file number only; no titles, dates, or qualifying information relating to approval, withdrawal or areas or type of development is requested. Request is for plan project file numbers only to be listed (on sheet 1 of SDP202100023): i. SUB202100082 Final Subdivision Plat, Dunlora Park, Phase II, d. 4-26-2021 (recent submittal, under review) ii. SUB201900172 Dunlora Park Subdivision Phase II, Final (plat); withdrawn 4/3/21. Note: this final subdivision plat is associated with SDP201800002 and WPO201700052, a layout for 14 attached townhouse units in an area of space that coincides with development shown with current applications SDP202100023 and SU13202100082. Since this plat, specifically, sheet V7, shows a New Variable Width SWM Facility and Permanent Drainage Easement that will not be recorded, this plan (WPO201700052) will not receive a Grading Permit. Engineering considers WPO201700052 (Amendment #2 to WPO201600058) void, with final plat (including SWM facility easement) withdrawal, Apr-3, 2021. iii. SDP201800002 Dunlora Park Phase II Final Site Plan, approved 11/16/18. Note I: SDP201800002 is associated with WPO201700052. It appears that SDP202100023 replaces development layout approved with SDP201800002, replacing 14 attached units with 3 SEA (Lots 29-31) and 3 SFD units (Lots 32-34). SDP202100023 (current application) provides no conceptual SWM Note2: Approved SDP201800002 (Final Site Plan) is for a development layout that differs substantially from layout presented with the current application, SDP202100023. Note3: Current final subdivision plat, SUB202100082, shows 6-lot subdivision, 0.379 Ac. Open Space A-2, and shows no SWM facility or SWM access easement. While review comments for SUB202100082 may also address, SDP202100023 must show conceptual SWM, and a WPO plan Amendment is required to provide ESC measures appropriate to proposed current development plan, and SWM quality and quantity control consistent with 9VAC25-870-65 and 9VAC25-870-66 requirements. Please title the WPO Amendment `Dunlora Park Phase II VSMP /WPO plan, Engineering Review Comments Page 2 of 4 Amendment #4 to WPO2016-00058,' and on that WPO plan Amendment, include reference to all associated plans listed in this review comment, La. Note4: WPO Amendment approval is required prior to ESP approval or final subdivision approval. SUB202100082 should include any required on -site SWM treatment or detention facility /SWM access easements, and be recorded prior to ESP approval. Notes: A recorded Maintenance Agreement is required for WPO plan Amendment required for SDP202100023 and SUB202100082 approval. iv. WPO201600058 approved 11/28/16, titled `VSMP Plan for Dunlora Park, WPO- 2016-00058' was issued state CGP VAR10J178 for 6.57 Ac. land disturbance: 29 lots (although area considered by SDP202100023 /SUB202100082 appears to be included in LOD linework on WPO201600058, land disturbance is limited ). v. WPO201700035 approved 8/28/17, titled `VSMP Plan for Dunlora Park WPO- 2017-00035 (Amendment to WPO-2016-00058)' excludes area considered by current application, SDP202100023; excludes area from SWM design, limits of disturbance. This is Amendment # 1 to WPO2016-00058. Sheet 3 of Amendment #1, erosion Control Notes & Narrative, Purpose, explains: `The purpose of this land -disturbing activity is to grade the site for the future development of Dunlora — 29 Lots. The total acreage to be disturbed with this plan is 7.03 Ac.' Lots are numbered on sheet 5A, 1— 29, a mix of SEA and SFD units. With Amendment #1, subdivision of area under consideration with current applications SUB202100023 and SUB202100082 is eliminated, and beginning with Amendment #1, the only activity on areas covered by current applications is grading on Lot 29 and Lot 28, installation of storm and sanitary sewer lines, perimeter ESC measures, and proposed stockpile area surrounded by silt fence.' No improvements are shown other than Varick Street and Marin Court. vi. WPO201700052 approved 10/24/18, titled `Dunlora Overlook VSMP Amendment, WPO-2017-00052 (Amendment to WPO-2016-00058)' is Amendment #2 to WPO201600058. vii. Most recent WPO titled `Dunlora Overlook VSMP Amendment #3 WPO201700052 (Amendment #3 to WPO201600058)' has limited effect, requests review of a riprap ditch behind Lot 17 on Varick Street, excludes and does not relate to or have any bearing on area under consideration with current application, SDP202100023. Amendment 3 provides no ESC measures or SWM treatment or detention for the now -current three attached, three detached unit SDP design. b. Provide narrative context for approved WPOs for Dunlora Overlook, which approved development with substantially different layout on the same portion of the same parcel. c. WPO201700052, WPO201700052 Amendment 1, Amendment 2, and (possibly) Amendment 3 (unapproved, last review comments dated 10/25/19) proposed underground detention and storm conveyance for a different layout (image, below). d. Since no apparent response to 10/25/19 WPO201700052 Amendment 3 review comments, Engineering deems Amendment 3 withdrawn. Engineering Review Comments Page 3 of 4 e. Update topo and survey data. All topography should be at least visually field verified by the designer within the last year. 2. Building footprint, Lot 32, encroaches on temporary grading easement for public use upon demand of the county. Strip or spread footers in highlight areas of image, below, encroach. Please revise to allow sufficient clearance for both tooter construction for dwelling on Lot 32, and for Albemarle to have unencumbered use of proposed temporary grading easement. Avoid circumstance of damage to structure if Albemarle is operating within temporary grading easement. I ha I � / NEW SANITARY/ \ SEWER LATERAL II \ PRIVATE SANnARV SEWER LATERAL ACCESS EASEMENT L 3. Sheet 3: a. Revise 13.0' private easement to 20.0' Min., consistent with ACDSM, Sec. 7.D.1. b. Provide deed bk.-pg. ref. to Approved SWM forest & open space (FOS) easement. 4. Sheet 4: a. Provide conceptual stormwater management design with neat submittal. b. Submit a new VSMP/WPO Application since design substantially revised from development design approved with WPO2017-00052. c. Easement/s associated with new WPO plan must be recorded prior to or with final subdivision plat, including: public or private drainage easements, SWM facility access, and SWM facility or (new) FOS easement. Engineering Review Comments Page 4 of 4 d. Clarify how runoff reaches proposed VDOT Std. Type I riprap-lined channel —curb cut, for example. e. Label YD C-B-A-Str. 104 private drainage easement. f. Please check that contour 458' in alley displays accurately. g. Provide drainage for concentrated runoff from rooftops /other impervious areas of Lots 32-34. Ref requirements at 18-4.3.3.C.4. Surface water diversions. Provide /show with new VSMP /WPO Application. Show drainage elements with SDP202100023 and any private drainage easements on SUB202100082. Note: Design appears to indicate stormwater management relies on SWM facilities that serve Varick Street and Marin Court (Dunlora Phase I). Please ensure VSMP /WPO Application provides accurate account of SWM facility capacity adequate to receive additional runoff via YD C-B-A-Str. 104-103-102 pipe /structure network. h. With proposed new SWM access easement, provide vehicle turnaround that does not require public vehicle to use a private drive, or private (alley) driveway apron. i. Revise `approved wall' label to read `existing retaining wall,' since constructed. j. Recommend revise private sanitary sewer lateral access easement to coincide with a travel way or grade passable to typical service or maintenance vehicle (pickup truck). San. sewer access easement need not coincide with the exact location of sanitary sewer easement, but should enable service personnel to use the alley for access. 5. Sheet 8: Drainage map appears to combine storm runoff pipe networks of Dunlora Park Phase I and II. WPO plan Amendment should clarity degree to which runoff from proposed SDP202100023 improvements may rely upon Dunlora Park Phase I SWM facilities. Please feel free to call if any questions: 434.296-5832 -x3069 Thank you I Anderson SDP2021-00023 Dunlora Park Phase 2, FSP Amendment 2051121