HomeMy WebLinkAboutWPO201000077 Review Comments Stormwater Management Plan 2011-06-27ALg�,��
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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
Rev. 1: 21 June 2011
Date of Comment: 29 December 2010
Rev. 1: 27 June 2011
Engineer: John P. Diez — Engineering Technician
The latest SWM and site plan for the Pleasant Grove Baptist Church, received on 21 June 2011, has been
reviewed and meet the minimum requirements. The modification to the stormwater management plan will
be tracked under the previous application number.
A. Minor Site Plan Amendment Review (SDP- 2010 - 00090)
1. The site plan amendment cannot be approved until the stormwater management plan is
acceptable.
(Rev. I) Comment has been addressed.
B. Stormwater Plan Review (WPO- 2009 - 00070)
1. Please remove the manhole on STR #3 and turn it into a VDOT standard outlet.
(Rev. I) Comment has been addressed.
2. Please provide an energy dissipator for the outlet entering the biofilter.
(Rev. I) Comment has been addressed.
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.
(Rev. I) Comment has been addressed.
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:
(Rev. I) Comment has been addressed.
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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