HomeMy WebLinkAboutWPO201200024 Review Comments Stormwater Management Plan 2012-03-14i"
,. `IRGINZP
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: Western Albemarle High School Track and Tennis Court Reconstruction
Minor Site Plan Amendment WP0201200024
Plan preparer: A. Morton Thomas and Assoc. Inc. [fax 804 - 276 -6233]
Owner or rep.: County of Albemarle School Board Western Albemarle High School
[fax 979 -7443]
Plan received date: 1 March 2012
Date of comments: 14 March 2012
Reviewer: Max Greene
The Water Protection Plans (WP0201200024) submitted 1 March 2012 have received
Engineering Review and do not appear to meet Albemarle County minimum checklist
items for approval. Lists and details can be found @
httio: / /www.albemarle.orcr/upload /images /forms center /departme
nts/ community_ development/ forms /design standards manual /Albe
marle County Design Standards Manual 02- 12- 2010.pdf
Please adequately address the following comments for final Water Protection approval:
A) Site plan
1) Please show the benchmark location, elevation, and datum for topography. An existing
utility or other known position will suffice. [Policy]
2) Please show date and source of the topographic information: All topography should be at
least visually field verified by the designer within the last year [18- 32.6.6, 14 -302, Policy
for date]
B) Stormwater Management Plan
1) The SWM structure does not appear adequate. Please increase the size by at least 30% or
raise the embankment a foot and the inlet structure to 1' over the basin floor.
2) Please fill out the Albemarle County Simple Spreadsheet for the area draining to the
basin. (see Attachment)
C) Erosion Control Plan
1) The existing stormwater outlet to the north of the track is apparently inadequate causing
erosion down the existing swale and onto the neighboring property and pond. Please
show how the failed stormwater outlet channel will be repaired and how MS -19
requirements will be met with this plan. (see design standards manual section 8- Grading
- A.4)
2) Please show the Albemarle County Temporary Paved Construction Entrance Detail on the
plans.
Engineering Review Comments
Page 2 of 2
3) Silt fence is shown running down slope and will only concentrate the storm flow into the
lowest point creating a blowout or failure of the fence. Either show the silt fence
following contour elevations or show a structure at the low point of the fence to capture
the drainage area.
Once these comments have been addressed, please submit 2 copies of the revised plans, calculations, and
narratives to Current Development Engineering.
Current Development Engineering is available from 2:30 -4 PM on Thursdays to discuss these review
comments. Please contact Max Greene at 434 - 296 -5832 ext. 3283 or email mgreene @albemarle.org to
schedule an appointment.
[17- 204.f] An application for an erosion and sediment control plan that requires modifications, terms, or conditions to be
included in order for it to be approved shall be deemed to be withdrawn if the owner fails to submit a revised plan addressing the
omitted modifications, terms or conditions within six (6) months after the owner is informed of the omitted information as
provided under paragraph (B).
File: CDDEl_esc,swm_MRG_WAHS Track and Tennis Court Reconstruction. doc