HomeMy WebLinkAboutSDP200500142 Review Comments 2006-03-28 O�FA
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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—Greenbrier Center
Plan preparer: Mr.Johnny Drumheller,B.Aubrey Huffman Engineering (fax 434.979.1681)
Owner or rep.: Dr. Charles W.Hurt,Charlottesville Land Trust (fax 434.296.3510)
Date received: 13 December 2005 (plan date 28 November 2005)
Rev.1: 15 Feb 2006
Date of Comment: 17 January 2006
Rev.1:28 Mar 2006
Engineer: Allan Schuck,Glenn Brooks(Rev.1)
The final site plan for Commonwealth—Greenbrier Center,received on 13 December 2005,has been
reviewed. The engineering review for current development will recommend approval of the final site plan
when the following items are adequately addressed:
A.Final site plan comments(SDP200500142)
1. The measurement of the 6' sidewalk cannot include the 6"of curbing. Please revise the sidewalk
dimensions on the final site plan. [18-4.12.16e]
Rev.]:comment addressed.
2. Please label the end section to be used at the outlet of the pipe system on the plans. [DM 505E13]
Rev.]: comment addressed.
3. At outlet,Point 1,the designer will provide and label the type of velocity dissipation appropriate for
velocity,pipe size,and discharge and site conditions on the site plan. [DM505E7&8]
Rev.1: comment addressed.
4. Please show inlet shaping for all of the structures because the flow drop exceeds 4 feet. Please refer to
VDOT standard,IS-1,Road&Bridge Standards,Volume 1. [DM505E9]
Rev.1:comment addressed.
5. Please label the radii of all the curbing. [18-32.6.6e]
Rev.]: comment addressed.
6. Please show the retaining wall at the western end of the loading dock at Lot A. [Policy]
Rev.]: comment addressed.
7. Please label the width of the loading space at Lot A.The space has to be 12'wide. [18-4.12.18A]
Rev.1: comment addressed.
8. Please show and label the dimensions of the required public drainage easement needed from STR-12
to the pipe outfall. [18-32.6.6c]
Rev.]:Design Manual section 1101 requires a wider easement. I compute up to 36'.
9. Please provide the as-built information for STR13, STR 12,and pipe at Greenbrier Drive.
Rev.]:comment addressed.
10. Please increase the length of the proposed DI-3A(Inlet# 10). The proposed spread of 17' needs to be
decreased in this location. [DM 505G3]
Rev.]: The structure has been changed on sheet 2, but not on sheet 4.
11. Please show the trench drain and corresponding pipe to STR 5 on the profile sheet. [18-32.6.6d]
Albemarle l ity Community Development
Engineering Review Comments
Page 2 of 3
Rev.]: comment addressed.
12. A pedestrian and vehicular barrier is needed around the parking areas. [18-32.7.2]
Rev.]: comment addressed.
13. Additional comments and/or conditions may be forthcoming, on the review of future submittals,due to
the changes required for this plan submittal.
Rev.]: no additional comment.
B. Stormwater management plan comments(WPO200500102)
1. SWM detention is provided by the existing regional Peyton Basin.
Rev.]:nothing required.
2. Please provide written documentation from Americast that the proposed layout of the Filterras
shown on Sheet 6 of 8 is okay with them. [Policy]
Rev.]:comment addressed.
3. The applicant needs to submit a completed stormwater management facilities maintenance agreement
and fee to the County for review. [17-323]
Rev.]:comment addressed.
4. The SWM bond amount has not been computed at this time.
Rev.]:The bond amount is$53,000. Please provide 2 copies of the completed plan for stormwater
management.
C. Erosion and sediment control plan comments(WPO200500102)
Narrative:
1. The E&SC Narrative needs to be updated to accommodate changes for the next submission.
Rev.]:a revised narrative was not received. Please provide four copies of the narrative and four
copies of the revised plans.
Plans:
2. Structure 2 manhole sections need to be installed at a level where at least 2' of storage space is
available around the manhole to provide a temporary sediment storage area while the site is developed.
Please describe this further with Note 2 on the E&SC plan sheet.
Rev.]:comment addressed.
3. The silt fence at the eastern edge of the property cannot be used a diversion. Please provide a DD
alongside the silt fence to direct dirty water to the sediment trap. [VESCH 3.05]
Rev.1:comment addressed.
4. Please show the dividing lines and the direction of flow for the different drainage areas(including the
area to each E&SC measure)to verify adequacy. Note the size(acreage)of each drainage area.
Rev.]: The drainage divide has been shown. Areas were not found. Please refer to comment 8.
5. Please add the following note on the E&SC plan:"The developer shall reserve the right to install,
maintain,remove and/or convert to permanent stormwater management facilities(where applicable)all
erosion control measures required by this plan regardless of the sale of any lot."
Rev.]:comment addressed.
6. Please show an area for soil stockpiling on the E&SC plan.
Rev.]: comment addressed.
7. Please show the following note on the E&SC plan for the paved construction entrances: "A minimum
water tap of 1 inch must be installed with a minimum 1 inch ballcock shutoff valve supplying a wash
hose with a diameter of 1.5 inches for adequate constant pressure. Wash water must be carried away
from the entrance to an approved settling area to remove sediment. All sediment shall be prevented
from entering storm drains,ditches or water courses." [DM Chapter 5,WR-1]
Rev.]:comment addressed.
8. Additional comments and/or conditions may be forthcoming due to the changes required.
Albemarle( ay Community Development
Engineering Review Comments
Page 3 of 3
Rev.]:Structure#2 will be acting as a silt trap as discussed in our meeting. This is essentially a
variance of the silt trap requirements for an alternative that will work with the wall construction. A
storage area needs to be shown on the plan, such as would be done for a culvert inlet protection or
silt trap. It appears that about a 33'x33'area is required to obtain an adequate wet volume.
9. The E&SC bond amount has not been computed at this time. It shall become a part of the whole
Water Protection bond amount.
Rev.1: The erosion control bond amount is$1 S,000.
Items B and C need to be completed before a grading permit can be issued for this project.
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