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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: Commonwealth Townhouses — SDP2010 -04 Major Amendment
Plan preparer: Shimp Engineering, P.C. [434- 207 -8086]
Owner or rep.: Moores Creek Land LLC
Plan received date: 20 Feb 2014
Date of comments: 8 Apr 2014
Reviewer: Michelle Roberge
Engineering has completed the review of application SDP201400015.
A. Site Development Plan (SDP201400015)
1) The site plan should not contain erosion control plans. Also, remove details pertaining to these
plans. These items will be reviewed with the WPO application. The title of the WPO plans should
include "E &S and Stormwater Management."
2) The critical slopes are considered "preserved slopes." Please label on plan. The critical slopes were
previously granted for disturbance. However, an improvement has to meet Albemarle County
Code Section 30.7.5(1) and (2). The wall exceeds 6'. The wall should be broken into multiple
stepped walls with a maximum height of 6' and a 3' horizontal separation. Please address.
3) All retaining walls require engineered plans (not generic manufacturer's detail and computation.
4) Provide date of survey. All topography should be field verified by the designer within the last year.
Please verify site topography.
5) Show detail of dumpster pad or note specification to be 4" stone base and 6" concrete of 3000 psi
at 28 days, or stronger, reinforced with a minimum grid of wire reinforcing or #4 bars at 12" on
center.
6) VDOT approval is required for the entrance intersecting Commonwealth Drive.
7) Proposed slopes steeper than 3:1 should have low maintenance (not grass) ground cover specified
on plan. Please provide.
8) The site is proposed to drain into an existing 48" RCP pipe owned and maintained by VDOT.
From there it drains through the townhouse site, the Stonefield shopping center, under Rt. 29 and
finally into the city. Adequate channels are required to be demonstrated. The contributing drainage
area, from your site, to a point of discharge is one percent or less for the total watershed area.
Please provide this analysis. Please be aware that there have been great concerns at the discharge
from Stonefield, and this site contributes to that flow directly. Also, verify capacity of the existing
48" pipe since it has been relined with another pipe.
9) There were plans to convert the NW area of the site to a regional pond, but we are not certain
when this will take place. The culvert inlet is in poor shape with ponding limits encroaching on the
neighboring property. The area of the culvert inlet is unsafe and will need proper maintenance to
remove excessive mud and debris. The endwall may need to be replaced. This area should be
cleaned and stabilized.
Engineering Review Comments
Page 2 of 2
10) Change the configuration of the filterra inlet and grate inlet at the entrance to provide more runoff
into the filterra box. Also, to avoid the sump grate inlet at the main entrance, remove one parking
space next to the handicap parking and revise to a curb island.
Sincerely,
Michelle Roberge