HomeMy WebLinkAboutWPO200400044 Review Comments Stormwater Management Plan 2009-01-09ALg�,��
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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: WPO- 2004 - 00044, Old Trail Golf Clubhouse
Plan preparer: Collins Engineering, PE; Collins Engineering fax 434.245.0100
Email (scott @collins- engineering.com)
Owner or rep.: March Mountain Properties fax 434.245.0300
Date received: 19 September 2008
Rev 1: 26 November 2008
Date of Comment: 22 October 2008
Rev 1: 9 January 2009
Engineer: John P. Diez Current Development — Engineering Technician
The SWM Plan for Old Trail Golf Clubhouse, received on 26 November 2008, has been reviewed. The
plans cannot be approved as submitted and will require the following corrections before approval can be
granted:
A. Stormwater management plan:
1. Engineering review policy states that the riser crest stays within weir flow control during the 10yr.
storm. In this case, the head of the riser is acting as an orifice instead of a weir.
Rev 1: Comment has not been addressed. The crest of the riser still appears to be acting as
an orifice for the 10 -year storm. Please either increase the diameter of the riser (and likely the
barrel) so that the 10 -year storm maintains weir control on the riser top or add an anti - vortex
device and update the pond details to the riser.
2. Drainage areas over 50 acres make use of more than one hydrologic method to verify computations
of peak flow.
(Rev. I) Comment has been addressed
3. Water quality calculations were not reviewed because contributions to the Licking Hole Basin
suffice for the clubhouse's water quality requirement. Future projects needing to use those facilities
will need to provide calculations at the time of submittal.
(Rev. I) Comment has been addressed
Once these comments have been addressed, please submit 3 copies of the revised plans and one set of
calculations.
E2 swin JPD Old Trail Golf Clubhousc.doc