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Home My WebLink AboutSDP202000030 Review Comments Final Site Plan and Comps. 2020-04-28Phone (434) 296-5832 Project: Project file#: Plan preparer: Owner or rep.: Plan received date: Date of comments: Reviewer: Project Coordinator: COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road, Room 227 Charlottesville, Virginia 22902-4596 Fax (434) 972-4126 Site Plan review Chattanooga Colonnade Drive /Medical Office Building Final Site Plan SDP2020-00030 Jonathan Showalter, PE, Timmons Group — 608 Preston Ave, Suite 200, Charlottesville, VA 22903 [ jonathan.showalter(c�timmons.com ] John Thier, Turner Enterprise, 250 W. Main St. Charlottesville, VA 22902 [ john(a)turner-enterprises.com ] 30 Mar 2020 28 Apr 2020 John Anderson Paty Satemye SDP2020-00031 ( Also, please see SDP2019-00042, WP02020-00019 ) (SDP2019-00042 Engineering comments may persist 1. Addressed with FSP. 2. Addressed with FSP. 3. GIS topographic features indicate a drainage feature and show blue stream line that may be a perennial stream. Provide confirmation that drainage is either intermittent or ephemeral, and not a perennial stream. If feature is perennial, establish and show stream buffer on FSP, and revise proposed development design consistent with Ch. 17, Article VI, Stream Buffers. (FSP) Not addressed. Applicant (3/23/20 letter): `Per the survey the stream is not on the parcels to be developed.' As follow-up: Comment requests stream buffer be established and shown if stream is perennial (whether stream is on parcels to be developed or not is irrelevant). If stream is perennial, revise design per Ch. 17 requirements for stream buffers.* 4. [VSMP /WPO Plan is in process, WP0202000019.] An approved VSMP Plan is pre -requisite to FSP approval. 5. SWM Facility /Access easement with deed must be recorded prior to FSP approval. Persists. Applicant: Acknowledged. 6. Addressed with FSP. 7. Ensure project has all relevant state /federal permits, including Army Corps of Engineers permit for any stream or wetland impacts. May persist. Applicant: `No wetlands or streams are located in the disturbed area and therefore no permits for impacts are required.' Engineering cannot confirm whether other agency permits are required, or not. 8. Identify existing wetlands, if any (FSP Addressed with FSP. Applicant: `No wetlands are present in the disturbed area.' 9. With FSP, identify area or length of any wetland or stream impacts. Addressed with FSP. Applicant: `No streams are located in the disturbed area.) Please address items 3, 51 above. * Please see Albemarle County Code Ch. 17-Article VI. Stream Buffers for requirements that apply to development within stream buffers. 1. VSMP /WPO plan review comments (24-Apr 2020) include site plan -related comments. Please address: Engineering Review Comments Page 2 of 3 a. C3.3 (C4.0 on FSP i. Label all retaining walls along edges of site. Assign unique identifiers (Wall A, B, C, etc.) to each wall. ii. Provide lintel detail for detention outfall pipe where it passes beneath retaining wall at east corner of site. iii. Label SWM detention system outfall public drainage easement. iv. Note: Easement plat must be recorded prior to VSMP Approval. * SWM Facility, public drainage, and sight distance easements v. Note: VSMP approval is required prior to final site plan approval. vi. Wherever proposed parking lot grade concentrates runoff against a curb, provide CG-6. [18-4.12.15.g.] b. C4.0 i. Retaining walls > 4-ft. require sealed professional geotechnical design. Since proposed retaining wall supports parking infrastructure, provide detailed geotechnical retaining wall design to Engineering for review prior to VSMP /WPO plan approval. ii. Mill and overlay 25' (minimum) either side of site entrance, full lane width of Colonnade Drive, NBL. iii. If existing pavement is alligatored or in bad repair, then more than 25' full lane width mill and overlay will be required. Engineering intends to evaluate existing Colonnade Drive, NBL, via site visit. c. C5.0 i. Ensure Structures 204, 203, 202, and 201 work with segmental block retaining wall geogrid, if geogrid is required. ii. Provide a French drain (or similar collection system, similar to Boys & Girls Club) to collect /screen runoff from dumpster area to prevent runoff crossing entire paved parking lot area between dumpster and Str. 204. iii. Show 72" CMP storage pipe (detention system) manway access, located in parking lot. iv. Break pipe 103 into two sections (provide MH) so that pipe in public drainage easement only passes beneath one of two tiered retaining walls. Albemarle typically does not allow pipes in public drainage easements to pass through or beneath walls. v. Retaining Wall Note 4. (revise `Albemarle') vi. Provide cross -sectional trapezoidal, V-shaped, or other channel x-section, with riprap detail (Str. 102). d. C5.3: Provide and record sight distance easements, left -right, for areas outside Colonnade Drive 62' right-of-way. Show and label sight distance easements on site plan (SDP2020-00030), proposed sight distance easements on WPO202000019 C5.3. e. C7.0 (Include sheet with FSP) i. Label inlet structure upstream of storm pipe 405. ii. Provide invert elev. of pipe 301 at 72" CMP storage pipe. f. C1.3: Provide VDOT 2016 Road and Bridge Standard WP-2 detail on civil sheet. g. C2.0, C2.1: Compare with GIS. Confirm extent of critical slopes shown on plans match GIS. 2. Please note August 21, 2019 letter (Administrative conditional approval) for Initial Site Plan, SDP2019- 00042, p. 1, paragraph 2: Early or Mass Grading, in accordance with Chapter 18 Section 32.4.2.8, is not permitted following this initial site plan approval. Grading will only be permitted after final site plan approval. Final Site Plan approval is required to receive a Grading Permit. Engineering can process VSMP /WPO Plan (WPO202000012) to point of scheduling a preconstruction meeting, but cannot issue a Grading Permit until the FSP is approved. C4.0 3. Label entrance with VDOT designation, CG-9a, for example. 4. Provide leader line with ref. label to heavy duty concrete section, C1.1, if section applies to dumpster pad. Engineering Review Comments Page 3 of 3 5. C5.0: Ensure entrance does not exceed 4% grade for a distance of 40' from the intersected street, measured anywhere in the entrance [18-4.12.17]. Also, Final Site Plan checklist for plan reviewers, Entrances and right-of-way improvements, item 2. Please feel free to call if any questions: 434.296-5832-x3069. Thank you SDP2020-00030 Chattanooga Colonnade Dr Medical Office Bldg FSP 042820