HomeMy WebLinkAboutSDP200800154 Review Comments Preliminary Site Plan 2009-11-23vIRGIN�
County of Albemarle
Department of Community Development
Memorandum
To: Summer Frederick, Planner
From: Amy Pflaum, Engineering Review
Division: Current Development
Date: November 4, 2008
REV #1: November 23, 2009
Subject: SDP200800154, Re- Store'n Station - Preliminary
The preliminary site plan for Re- Store'n Station, resubmitted on October 19, 2009, has been reviewed. The
engineering review for current development can recommend approval once the following items are
adequately addressed:
Please label more clearly the existing right -of -way and edge of asphalt of Route 250 on Existing
Conditions and Road Improvements sheets.
REV #1: Comment has been addressed.
2. Please add sight distance triangles and easements to the entrance onto Route 250. [DM]
REV #l: Comment has been addressed.
The Road Improvements Plan states that the existing 15" and 18" pipes in the Route 250 right -of-
way will be extended, please show the proposed extension on the Site Plan. Please also add
direction of flow to these pipes. "Invert In = 701.91" is lower than "Invert Out = 702.14 ".
REV #l: Please show the existing culverts under and adjacent to Route 250 and the proposed
changes to these culverts on the Site Plan (Sheet 5), the Grading Plan (Sheet 6), and the Utility
Plan (Sheet 7). Please add the new invert elevation to the extension of the 18" concrete pipe.
4. The Grading Plan should show proposed grading associated with the new lanes on Route 250.
There appears to be a low spot where the 15" and 18" pipe meet, will this be filled in?
REV #1: Proposed grading shows that the existing low spot will be moved as the pipe is being
extended, however, the pipes do not show up on the Grading Plan, see Comment #3.
Proposed grades between the parking lot and the existing 15' roadway appear steeper than 2:1,
please revise the grading or use a retaining wall to maintain slopes no greater than 2:1. [DM]
REV #1: Comment has been addressed. Proposed grading has been revised to provide a 2:1
slope in this area.
6. Guardrail is required along the edge of the parking lot in all locations where the elevation of the
parking lot is 7 feet higher than the toe of the tie -in slope. [DM]
REV #1: This comment will be addressed with the final site plan.
An island is necessary at the edge of the 8 proposed parking spaces toward the back of the site.
[DM]
REV# 1: Comment has been addressed.
8. The proposed dumpster pad must extend 8 feet beyond the front of the dumpster. [18- 4.12.9]
REV #]: Two proposed dumpster enclosures are shown at 25'x30 ; meeting the requirement.
However, a 10'x15' dumpster enclosure is shown at the rear of the building. If this dumpster is
to be serviced by standard garbage trucks, the pad must meet the requirements of the
ordinance.
9. The proposed loading space should be adjacent to the structure. [18- 4.12 -13]
Comment has been addressed.
10. The proposed Atlantis D- Raintank does not have a water quality removal rate, please specify the
type of water quality measures that will be provided for this site. [18- 32.5.6.k]
REV #l: Three Filterra units are proposed, capturing only the front portion of the site. It is
unclear what water quality features will treat the rear of the parking lot and the building.
11. The proposed level spreader may not satisfy the requirements of VESCH MS -19. The exit slope
may not have a grade greater than 10%. An adequate channel and easement may be necessary
through neighboring properties.
REV #l: Comment still appropriate. It appears that meeting the requirements of MS -19 will be
a challenge for this site. Sizing a detention facility to over - detain stormflows maybe necessary.
New comments based on most recent plan submittal:
12. The grading of the pad for a future building creates a channel along the eastern side of the site.
This will need to be properly stabilized to prevent erosion. This will be addressed with the final
site plan.
13. Details on Sheet 7 show the D- Raintank under a parking lot, noting elevations. However, the
Raintank is not shown in the plan view. [18- 32.5.6.k]
14. If stormwater from Route 250 enters the proposed stormsewer system, public drainage easements
will be necessary to encompass the entire pipe system to its outlet. Please show easements on the
Site Plan. Structures, such as dumpster enclosures, are not allowed within public drainage
easements. [18- 32.5.6.1]
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