HomeMy WebLinkAboutWPO200900070 Review Comments Stormwater Management Plan 2010-12-29ALg�,��
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COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road
Charlottesville, Virginia 22902 -4596
Phone (434) 296 -5832 Fax (434) 972 -4126
Project: SDP - 2010 - 00090, WPO- 2009 - 00070, Pleasant Grove — Minor Amendment
Plan preparer: AC Shelton (ac00 @comcast.net)
Owner: Pleasant Grove Baptist Church C/O James E Thomas
Date received: 7 December 2010
Date of Comment: 29 December 2010
Engineer: John P. Diez — Engineering Technician
The latest SWM and site plan for the Pleasant Grove Baptist Church, received on 7 December 2010, has
been reviewed. The modification to the stormwater management plan will be tracked under the previous
application number. The plans can be approved after the following comments have been addressed.
A. Minor Site Plan Amendment Review (SDP- 2010 - 00090)
1. The site plan amendment cannot be approved until the stormwater management plan is
acceptable.
B. Stormwater Plan Review (WPO- 2009 - 00070)
1. Please remove the manhole on STR #3 and turn it into a VDOT standard outlet.
2. Please provide an energy dissipator for the outlet entering the biofilter.
3. Please provide a 9" high gravel berm to act as a forebay at the outlet on STR #3. Also,
remove pretreatment forebay note and contour at 595.5.
4. Engineering has routed the storms through the biofilter and found that the 4" orifice is too
restrictive and the facility overtops frequently. Please provide the following to satisfy the
SWM requirements:
a) Please remove the 4" orifice from the wall.
b) Use a 7" weir notch in the wall with an invert of 600.
c) There appears to be a discrepancy on the wall height for the weir. The wall exposure does
not need to exceed 2' yet it is dimensioned as 4' by 12'. Please provide a wall section
detail showing the footer.
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Once these comments have been addressed, please submit two (2) copies of the revised plans, calculations,
and narratives to Current Development Engineering.
Current Development Engineering is available from 2:30pm — 4:00pm on Thursdays to discuss these
review comments. Please contact Phil Custer at 434 - 296 -5832 or pcuster @albemarle.org to schedule an
appointment.
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