HomeMy WebLinkAboutWPO201200095 Review Comments Erosion Control Plan 2012-12-28i"
,. `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:
Plan preparer:
Owner or rep.:
Plan received date:
Revision submitted
Date of comments:
Reviewer:
YVES DELORME INC - MIA
Shimp Engineering, PC
YVES DELORME INC
18 September 2012
10 December 2012
28 December 2012
Max Greene
' 1I► IIIII 11
[Justin @ shimpengineering.com]
[No Contact Information Provided]
The Site Development Plans (SDP201200056) submitted 10 December 2012 have received
Engineering Review and do not appear to meet Albemarle County minimum checklist items for
approval. Please adequately address the following comments for final approval:
A) Road and drainage plans (SDP200400042)
1) VDOT approval is required. Comments will be forwarded when received. [DM905] Comments
have not been received at this time.
2) Centerline turning radius does not appear large enough to meet the minimum single -unit truck
design (30' Truck), as defined by AASHTO. Centerline is from the center of the travel -way (each
lane) and should be a minimum 38' radius. The plan appears to show a 30' "Path of Front
Overhang ". Please show radius within AASHTO design minimums. This item does not appear
adequately addressed. Please show Vehicle tire path.
Entrance Radius: The entrance radius should be designed to accommodate the design
vehicle expected to use the entrance on a daily basis.
Design Vehicle and Turning Radius by Land Use
Land Use(s) Served by Access Design Vehicle Radius
Residential Passenger Car/Pickup 24
Residential on Bus Route Single Unit Truck (Bus) 45
Office with Separate Truck Access Passenger Car/Pickup 24
Office without Truck Access Single Unit Truck 42
Commercial / Retail with Separate Truck Access Passenger Car/Pickup 24
Commercial / Retail without Separate Truck Access WB -50 Truck 45
Industrial with Separate Truck Access Passenger Car/Pickup 24
Industrial without Separate Truck Access WB -50 Truck 45
Recreational without Watercraft Access or Camping Passenger Car/Pickup 24
Recreational with Watercraft Access or Camping Motor Home/Boat 50
Agricultural Field Access Single Unit Truck 42
Municipal and County Roads WB -50 Truck 45
TABLE 4 -1 DESIGN VEHICLE AND TURNING RADIUS BY LAND USE
Note: "with Separate Truck Access" indicates truck prohibition from primary access.
Entrances into mixed use developments will be designed to accommodate the largest
design vehicle expected to use that entrance.
Radii * - All commercial entrances should have radii large enough to accommodate the
Engineering Review Comments
Page 2 of 3
largest design vehicle that will use it without creating undue congestion or hazard on the
through street. The minimum entrance radius allowed should be 25
feet and the minimum exit radius allowed should be 25 feet.
3) Entrance (Right Lane) does not appear to be a smooth transition from the existing pavement.
Please show a road profile and spot elevations on the plan for verification. [ 18- 32.6.6.e]
Proposed Entrance still has a 33% slope for over 5 feet. Additional grading is required to
meet the minimum slope requirements.
4) Please show a pavement construction detail for review. This item has been minimally addressed.
Usually a detail showing the entire right -of -way, curb, pavement and percent of crown is shown
for typical pavement details for construction.
5) Location of storm -drain inlet should be at the lowest point possible. This should be clarified with
a road profile and spot elevations. This item has been addressed at this time.
6) Please show spot elevations for top and bottom of wall at grade breaks. This item has been
adequately addressed.
7) VDOT guardrail or wall extended to top of guardrail height will be required. [18- 32.7.2] VDOT
end sections are missing from plan. Please show terminal treatment end sections on the
plan.
8) Existing entrance may require reconstruction to meet VDOT design requirements, but not enough
existing topography was included for determination. [18- 32.5.6.d, 18- 32.7.2.1, 18.32.7.3]
Additional information is needed for determination. 33% grade at entrance will need to be
corrected.
9) Proposed topography in the travel -way appears steeper than the 10% as stated on the plan. Please
space the proposed travel -way contours to the minimum 10% slope or flatter. This item appears
adequately addressed at this time.
B) Stormwater Management and Mitigation Plan (WP0200500007)
1) Stormwater Application and fee are required prior to project review.
http: / /www.albemarle.org/upload /images /forms center /departments /Community Development/for
ms/Engineering _and_WPO_Forms/Plan_ Review _- _Application_Stormwater_Mana eg ment-
BMP Plan.pdf Comment adequately addressed.
2) Underground storage /detention needs access manholes for inspection and maintenance. Comment
appears adequately addressed.
3) Details may be required for adequate construction and inspection of stormwater system. Comment
appears adequately addressed.
C) Erosion Control Plan (WP0200500007)
1) Erosion and Sediment Control application and fee are required prior to project review.
httD: / /www.albemarle.ora/unload /images /forms center /departments /Community Develonment/for
ms/Engineering andWPOForms/Plan Review- ApTlicationStormwaterMana eg ment-
BMP Plan.pdf Comment adequately addressed.
2) Silt fence appears to run down slope like a diversion. Silt fence proposed as a diversion requires a
sediment control structure designed for the total drainage area to outlet of diversion. This office
recommends showing wire supported -silt fence on a single grade above the roadside drainage
swale to allow for construction of the retaining wall. The wire support will help stop anything that
may roll down the slope during construction before it rolls into the road or blocks the drainage
swale. Comment appears adequately addressed.
3) Inlet and outlet protection is required on the stormwater pipes.
Engineering Review Comments
Page 3 of 3
Once these comments have been addressed, please submit 3 copies of the revised plans, calculations, and
narratives to Current Development Engineering along with the required review fee and transmittal form.
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 m .-reene @albemarle.ora 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_sdp_MRG_Yves Delmore Inc. - mia.doc