HomeMy WebLinkAboutSDP201500017 Review Comments Final Site Plan and Comps. 2015-06-01�pF A
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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: Western Albemarle High School — Initial Site Plan
Plan preparer: Timmons Group
Owner or rep.: County of Albemarle School Board
Plan received date: 28 April 2015
Date of comments: 1 June 2015
Reviewer: Michelle Roberge
A. SDP (SDP2015000017)
1) What is the BMP used? It appears sheet flow to open space is proposed. Please note, design for
sheet flow to open space does not meet the following per Virginia DEQ Stormwater Design
Specification No. 2.
a) The first 10 ft. of filter must be 2% or less in all cases.
b) The slope after first 10' after the level spreader is too steep. Maximum slope is 3 -6 %.
C) See page 8 of spec for detail of level spreader. Notice the 10' length after the apron.
Clarify how proposed level spreader is designed.
d) The Conserved Open Space must be protected by a perpetual easement or deed
restriction that assigns the responsible party to ensure that no future development,
disturbance, or clearing may occur within the area.
e) A long term vegetation management plan must be prepared to maintain the
Conserved Open Space in a natural vegetative condition. Generally, Conserved
Open Space management plans do not encourage or even allow any active
management. However, a specific plan should be developed to manage the
unintended consequences of passive recreation, control invasive species, provide
for tree and understory maintenance, etc. Managed turf is not considered an
acceptable form of vegetative management, and only the passive recreation areas
of dedicated parkland are eligible for the practice (e.g., the actively used portions
of ball fields and golf courses are not eligible), although conservation areas can be
ideal treatment practices at the edges of turf - intensive land uses.
2) Submit a VSMP.
Engineering Review Comments
Page 2 of 2
3) Show stormsewer calcs on VSMP.
4) Verify where roof runoff is conveyed to for proposed bldg.
5) Show critical slopes. They may be manmade, but verify. Slopes of twenty -five (25) percent or
greater which are lawfully created within a development that was approved by the county shall not
be considered critical slopes.
6) Revise the str 202 to 102 on plan to match profile.
7) Provide a curbed island instead of striping. This area may be used for biofilter.
8) Verify silt fence is still adequate when you include the drainage area north of parking. Please
address.
Sincerely,
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Michelle Roberge