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HomeMy WebLinkAboutSDP202200022 Review Comments Major Amendment, Final Site Plan 2022-04-21a$ County of Albemarle COMMUNITY DEVELOPMENT DEPARTMENT Site Plan review Project title: Mountain View Elementary — MajAmendment Project file number: SDP202200022 Plan preparer: Craig Kotarski, PE [ craig.kotarski e timmons.com ] 608 Preston Ave., Suite 200 / Charlottesville, VA 22903 Owner or rep.: County of Albemarle School Board, 401 McIntire Rd Charlottesville, VA 22901 [ mwertmanAalbemarle.org ] smathonAI)iedmonthousing. org Plan received date: 12 Apr2022 Date of comments: 21 April 2022 Plan Coordinator: Rebecca Ragsdale Reviewer: John Anderson 401 McIntire Road, North Wing Charlottesville, VA 22902-4579 Telephone: 434-296-5832 WWW.ALBEMARLE.ORG Engineering has reviewed the site plan (Major Amendment) and offers these review comments for Amendment approval. SDP2022-00022 1. General a. WPO Plan approval is required prior to Major Amendment approval. Please submit WPO plan at earliest convenience. b. Note: If WPO proposes nutrient credit purchase, purchase is required prior to receiving a Grading Permit. 2. C2.3: Label managed steep slopes. 3. C4.2: Recommend against P narrow curb radius at end of bus loop since tight radius concrete is prone to damage and may present ongoing maintenance /repair issue. 4. Revise design that concentrates bus loop runoff at curb cuts (blue circles, below) to then flow across side parking access before reaching SWM. Design favors icing at curb cuts /side parking access. Recommend inlets /pipe conveyance to SWM to avoid ice -over of side parking access in freezing temperatures. Engineering Review Comments Page 2 of 2 _-�-A r 1 5. C5.2: Storm runoff must release to a defined channel, provide defined armored channel from Str. 300 to the point natural topography provides a defined channel. 6. C7.1 a. Revise Str. 307 RCP pipe slope to 0.50% Min. b. Provide %:" steel plate in floor of Str. 304, since the vertical difference between the inverts of the inlet pipe and outlet pipe is > 4' (Ref VDOT Drainage Manual, 9.4.8.7, Maximum Grades. c. Provide LD-204, Storm Inlet Computation and LD-229 Storm Drain Design Computation tables. Please feel free to call if any questions: 434.296-5832 -x3069 Thank you / J. Anderson SDP202200022 Mountain View MAJ 042122.docx