HomeMy WebLinkAboutWPO200900029 Review Comments Stormwater Management Plan 2009-06-23� OF AL
,. vIRGINIP
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: WilcoHess SDP200900047, WP0200900029
Plan preparer: W.W. Associates [fax (434) 978 -1444]
Owner or rep.: WII.COHESS, LLC [fax (336) 767 -6280]
Plan received date: 9 June 2009
Date of comments: 23 June 2009
Reviewer: Max Greene
The plans for Wilcohess submitted on 9 June 2009 have received Engineering review.
The following items will be adequately addressed prior to final approval.
A. Site plans (SDP200900047)
1. Benchmark location, elevation and datum for topography. An existing utility or
other known position will suffice. [Policy]
2. All slopes 25% and over (critical slopes by County Zoning Ord.) are shaded [ 18-
32.6.6, 14 -3021
3. Critical slope wavier request appears to be required. [ 18 -4.2, 14 -304]
4. VDOT approval is required prior to final approval.
5. Show loading space.
6. Appears existing sanitary sewer line to the rear parcel may need to be
redesigned/constructed with Ductile iron casements to carry the wall load.
7. Retaining wall does not appear to be drawn to scale on the site plan. According to
the detail, the wall will be of varying widths due to its height. In addition, the
Geo -grid may cross the property line and a temporary construction easement will
be required.
B. Stormwater Management Plan (WP0200900029)
1. A completed copy of the Standard Stormwater Maintenance Agreement and fee
for recordation for the stormwater facilities is required prior to final approval.[ 17-
304E] The forms and instructions can be found on the Community Development
Department Web site on www.albemarle.org. [17 -304E]
2. Copies of manufacturer's approval of the plan for any manufactured stormwater
management facilities ( Filterra, stormfilter, sandfilter, etc.) [Policy]
3. The outlet pipe from the Filterra appears to enter the detention pipe below the 2-
year storm elevation. This office recommends elevating the pipe invert to allow
for proper draining of the filtering structure. The pipe should enter the structure
Engineering Review Comments
Page 2 of 2
above the 10 -year storm elevation.
4. Please add emergency overflow in design of storage structure. Existing design
appears to use State road for overflow.
C. Erosion Control Plan (WPO200900029)
1. Additional E &SC stormwater storage is required during demolition and
construction. This office suggests a "stone /aggregate" mountable berm installed
across the lower entrance to keep dirty water from entering the State Road.
2. Demolition plan, note #12, states the underground tanks are to be removed under
separate plan. The tank removal should be a part of this E &SC plan. [VESCL]
Once these comments have been addressed, please submit 2 copies (add 1 more copy if VDOT
needs to review, and 1 more if mass - grading that Planning needs to review) 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.
File: E1 _esc,swm,fsp_MRG_WilcoHess.doc