HomeMy WebLinkAboutWPO201300058 Review Comments Stormwater Management Plan 2013-11-01�RGICn4'
COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road
Charlottesville, Virginia 22902
WPO Plan Review
Project: Hollymead Town Center (Area C) Block IV
Number: WP0201300058
Date: 1 Nov 2013
Reviewer: Michelle Roberge
This is an abbreviated review comment notice. County engineering staff is available every Thursday
afternoon to discuss details of review. To schedule, please call your reviewer for an appointment.
Erosion & Sediment Control:
(Code Chapter 17, Article II)
Y N
X
Adequate
X Not Adequate
State standards followed, and Design Standards Manual notes and details
X I Adequate limits and perimeter measures out of work areas
All stages protected adequately
X Adequate channels
X I - Diversion dikes (behind lots 18 -27) to silt trap still needs to be shown.
-Place a note that positive drainage will be maintained near entrance to
direct water to silt trap or show a RWD at the entrance.
-Also, place a note that the entrance will be built to completion only
after positive drainage from the diversion dike to the silt trap is no
longer required by the county E &S inspector.
-Place a note that states lots 24 -28 can be issued a building permit only
after the sediment trap is removed and area is stabilized.
Stormwater Management:
(Code Chapter 17, Article III)
Y N
Adequate
X Not Adequate
Enough capture and treatment for on -site areas (using SWM Facility #2)
Enough detention storage for on -site areas (using SWM Facility #2)
Sealed hydrologic and hydraulic computations provided
- Include storm drain profiles with this WPO application.
-The sediment trap depth, Dl, is incorrect. Per elevation shown on sheet
ES5, DI is 2.2'.
-DA on ES6 do not match values on ES7.
- For structures 62 and 61, provide as- builts value. It appears the pipe
capacity for the 18" pipe is 14 cfs. The as- builts can be found in 2301
HTC Timberwood Boulevard PHl Road Plans.
- Include structure IA on ES7 comps.
- Please note some comments on the site plan regarding driveways may
affect WPO plan.
Mitigation:
(Code Chapter 17, Article III) Adequate
Not Adequate
Y N
n/a Buffers and disturbed areas adequately shown
n/a Adequate plantings at 2:1, or other mitigation provided
This review attempts to encompass the larger compliance questions. County staff does not assume
responsibility for any calculation or plan details, and cannot cover the intricacies of every plan submitted.
Each plan and calculation must have a professional seal and signature to assume these responsibilities.
This plan
Approved (please see attached Approval Fact Sheet)
X Not Approved
is