HomeMy WebLinkAboutSDP202200022 Review Comments Major Amendment, Final Site Plan 2022-07-12qoH nt 401 McIntire Road, North Wing
Charlottesville, VA 22902-4579
County of Albemarle
o � � Telephone:434-296-5832
COMMUNITY DEVELOPMENT DEPARTMENT WWW.ALBEMARLE.ORG
Site Plan review
Project title:
Mountain View Elementary — MajAmendment
Project file number:
SDP202200022
Plan preparer:
Craig Kotarski, PE [ craig.kotarski a 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 Apr 2022
(Rev. 1)
11 Jul 2022
Date of comments:
21 April 2022
(Rev. 1)
12 Jul 2022 —Once WPO plan approved Qitem l.a. below), No objection
Plan Coordinator:
Rebecca Ragsdale
Reviewer:
John Anderson
Engineering has reviewed the Major Amendment and offers these review comments for Amendment approval.
1. General
a. WPO Plan approval is required prior to Major Amendment approval. Please submit WPO plan at
earliest convenience. (Rev. 1) Addressed. Applicant response (letter d. 5/20/22):
`Acknowledged.'
b. Note: If WPO proposes nutrient credit purchase, purchase is required prior to receiving a Grading
Permit. (Rev. 1) Addressed. Applicant: `Acknowledged.'
2. C2.3: Label managed steep slopes. (Rev. 1) Addressed.
3. C4.2: Recommend against 1' narrow curb radius at end of bus loop since tight radius concrete is prone to
damage and may present ongoing maintenance /repair issue. (Rev. 1) Addressed. Applicant: `Due to the
narrow island, the largest diameter radius of 1.25' has been provided.'
4. Revise design that concentrates bus loop runoff at curb cuts (blue eireles,below) to then flow across side
parking access before reaching S WM. 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. [ Image
removed with Rev. 1 comments.] (Rev. 1) Addressed. Applicant: `Trench drains have been added across
the curb cuts to collect water and discharge to the existing facility.'
5. C52: Storm runoff must release to a defined channel, provide defined armored channel from Sir. 300 to the
point natural topography provides a defined channel. (Rev. 1) Addressed /NA. Applicant: `The stormwater
outfall has been revised to tie to the existing manhole without replacing the outfall pipe. The site outfall is
ow the existing 15" RCP pipe which is a defined channel.'
6.
a. Revise Str. 307 RCP pipe slope to 0.50% Min. (Rev. 1) Addressed.
b. Provide V2" 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. (Rev.
1) Addressed /NA. Applicant: `The plan has been revised and Str 304 is no longer included. No
other structures have a >4' drop.'
c. Provide LD-204, Storm Inlet Computation and LD-229 Storm Drain Design Computation tables.
(Rev. 1) Addressed.
Engineering Review Comments
Page 2 of 2
Please feel free to call if any questions: 434.296-5832 -x3069
Thank you / J. Anderson
SDP202200022 Mountain View MAJ071222revl.docx