HomeMy WebLinkAboutWPO200800080 Review Comments Erosion Control Plan 2008-09-12� OF AL
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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: Pavilions at Pantops, Phase 3 SDP200800125, WP0200800080
Plan preparer: Southern Development -Keith Lancaster [fax (434) 245 -08951
Owner or rep.: North Pantops Townhouses LLC [fax (434) 245 -0895]
Plan received date: 5 August 2008
Date of comments: 11 September 2008
Reviewer: Max Greene
The plans for Pavilions at Pantops, Phase 3 submitted 5August 2008 have received Engineering
review. The following items from the Design Standards list are to be adequately addressed prior to
final approval:
1. Accurate current existing topography at the time of submittal, including all existing site
features, and any recent disturbances, all at a legible scale [18- 32.6.6, 14 -302]
2. 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]
3. FEMA map and date references labeled for FEMA floodplain [Policy]
4. All existing easements (access, drainage, sight, sanitary easements, etc.) with deed book
references, locations and dimensions [18- 32.6.6, 14 -302]
5. Show all slopes 25% and over (critical slopes by County Zoning Ord.) are shaded [18-
32.6.6, 14- 302]Please place a statement on the plan that critical slope disturbance was
approved on the preliminary site plan for phase 2 (SDP200600042).
6. All Roads are to be designed to VDOT road standards. The minimum design speed is 25
mph with a posting of 20 mph. Please change the plans to meet these minimum standards.
7. Proposed slopes steeper than 3:1 will have low maintenance (not grass) ground cover
specified on the plan [Policy]
8. Intersection or entrance sight easements appear to be required. [18- 32.7.4, Subdivision
Ordinance, Article IV, Division 4]
9. All entrances will have a VDOT designation (PE -1, CG -9a, etc)
10. Curbing on all parking areas and travelways with VDOT designations (CG -2, CG -6)
11. Right of way will be shown as depicted in the typical street section detail.
12. Signs for traffic control shown and labeled: speed limit on all streets, stop signs at all
intersections.
13. Street name signs at every intersection. [County Road Naming and Property Numbering
Ordinance and Manual]
14. Driveways fronting on Kempton Place appear to require retaining walls to allow for safe
and convenient access to the townhouses.
15. Cross drain locations shown and labeled with VDOT designations (CD -1,2) at every major
cut and fill transition or sag curve.
16. Scour outlet protection at all outlets, corresponding to computations need to be clearly
described and shown on the plan.
17. Proposed pipe and inlet drainage area map to include:
a. Limits of all areas and sub -areas draining to proposed structures, and existing
structures or channels which will be impacted
b. Acreage of each drainage area as used in computations
Engineering Review Comments
Page 2 of 3
c. Hydrologic coefficient for each drainage area as used in the computations
d. Time of concentration for each drainage area as used in the computations
e. Destination structure labeled for each drainage area
18. Stormwater management incorrectly refers to WP0200500013 (Pantops Park) as the
Water Protection plan for this site. Please indicate the correct plan and reference number
this plan utilizes for water protection.
19. Limits of clearing and grading encompassing all disturbances, entrances, staging and
parking areas, areas where sediment -laden runoff will cross, or any construction related
activities. This must match any landscaping and conservation plans. The path to the
tennis court is shown crossing 2:1 slopes and will require significant grading to install.
Show the grading required to install the asphalt trail within the limits of grading. Below is
a trail cross sections detail provided by the Parks and Recreation department.
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20. The proposed tennis court appears to require an access for construction. If the tennis court
is to be constructed in a separate limit of construction, then a temporary construction
entrance and staging area is required.
21. If the tennis court is to be constructed without disturbing the existing wooded area, then a
temporary access and grading easement may be required from the Westminster Canterbury
of the Blue Ridge.
22. Please show erosion and sediment control measures for the construction of the tennis
courts.
23. No erosion control measures in the way of construction access or grading (Diversion dikes
or silt fence are not placed in the middle of the site, or through access or grading.
Sediment traps are not under or on top of fill. Construction entrances are not on fill, etc.
Engineering Review Comments
Page 3 of 3
If the concept for site protection is not adequate in this regard, further review of the plan
may not be possible)
a. The Temporary diversion dike along Verona Drive needs to be moved out of the
proposed grading for the site work.
b. The temporary construction entrance requires too much grading before it can be
installed as shown. Please move the temporary construction entrance to a location
utilizable from the beginning of the site work.
c. The existing sediment basin and forebay appear in the way of site preparation.
The basin and forebay will require reconstruction with this plan.
24. Please show a stockpile location, a staging and parking area, and all other construction
related areas the contractor will require for site construction.
25. Temporary slope drains (TSD) or diversions will be provided to prevent discharge over
disturbed or fill slopes
26. A typical section for each temporary channel or diversion referenced from the plan sheets.
Existing ground should be shown at the maximum cross slope on the plan.
Engineering staff is available on Thursdays from 2 -4 PM to discuss these review comments. Please
contact Mrs. Amy Pflaum, at 434.296.5832, Ext. 3069, to schedule a time to meet.
File: E1_rp,esc,swm,fsp_MRG_Pavilions at Pantops Phase 3.doc