HomeMy WebLinkAboutSUB201800039 Review Comments Road Plan and Comps. 2020-12-030
COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902-4596
Phone (434) 296-5832 Fax (434) 972-4126
Project:
Project File Number:
Plan preparer:
Owner:
Plan received date:
(Rev. 1)
(Rev. 2)
(Rev. 3)
Date of comments:
(Rev. 1)
(Rev. 2)
(Rev. 3)
Reviewer:
Briarwood Phase 6 — Road Plan
SUB201800039
Collins Engineering [scott@collins-engineering.coml
Wendell Wood and Nena Harrell
Woodbriar Associates
26 February 2018
22 April 2020
9 September 2020
20 November 2020
27 April 2018
16 June 2020
13 October 2020
3 December 2020
Matt Wentland
Scott,
The Briarwood Phase 6 road plans have been approved.
Engineering
1. A new VSMP plan (not an amendment) will need to be submitted and approved. (Rev. 1)
Comment not addressed. WP0201600054 is an early grading plan and does not
match the currently proposed layout. (Rev. 2) The VSMP amendment has been
approved.
2. Provide Deed Book and page numbers for all required off -site easements prior to plan
approval. (Rev. 1) Comment not addressed, response noted. (Rev. 2) Provide written
documentation to perform off -site work. (Rev. 3) Comment addressed.
3. Pipe slopes will need to be less than 20%, with anchor block provided for slopes over
16% (County policy and VDOT Drainage Manual). (Rev. 1) Comment addressed.
4. Pipe velocities over 10 fps should be avoided (VDOT DM). (Rev. 1) Comment
addressed.
5. Provide HGL calculations and show the HGL on the profiles. (Rev. 1) Comment
addressed.
6. Provide a'/2 inch steel plate in storm manholes with drops or 4' or greater (VDOT DM).
(Rev. 1) Comment addressed.
7. Provide the design for the riprap at the pipe outlets (VDOT DM). (Rev. 1) Comment
addressed.
8. The maximum height of retaining walls located on managed slopes is 6' (18.30.7.5). It
appears that reverse slope benches or surface water diversions may also be required.
(Rev. 1) Comment partially addressed. The label on sheet 3 says max height 14'. The
managed slope overlay hatch should be darkened, as it was hard to distinguish.
Proposed slopes will still need to follow the design standards in 18.30.7.5 even if
shown in a survey to not be 25% or more. Reverse slope benches/surface water
Engineering Review Comments
Page 2 of 2
diversion will be required per 18.30.7.5c every 20' height interval on 2:1 slopes.
(Rev. 2) Comment addressed.
9. Surveyor verification of the steep slopes will be required prior to VSMP approval. (Rev.
1) Comment not addressed, response noted. (Rev. 2) Comment addressed.
Revision 1 Comments
10. Include on the plans the Public Road Acceptance Procedure and the As -built Road Plan Policy.
(Rev. 2) Comment addressed.
11. It appears there should be a drainage easement on Lots 61 and 62 for pipe 437 and on
Inlet 454 on the existing lot. (Rev. 2) Comment addressed.
12. [VSMP comment] SWM access path have a maximum allowable grade of 20% without
being surfaced with gravel or pavement (25% with surface). The access should also be
moved outside of the preserved slopes. [DSM, policy] (Rev. 2) Comment addressed.
Planning, ACSA, VDOT, E911 and Fire Rescue had no objection.
Thank you,
Matt Wentland
434.296.5832 -x3458
File: SUB201800039 Briarwood 6 RP approval 12-03-20.doc