HomeMy WebLinkAboutWPO201300075 Review Comments Erosion Control Plan 2013-12-31A
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WPO Plan Review
Project: Cole's Import Specialists
Number: WP0201300075
Date: 31 Dec 2013
Reviewer: Michelle Roberge
COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road
Charlottesville, Virginia 22902
Plan submittal date: 6 Dec 2013
Phone: 296 -5832
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: Adequate
(Code Chapter 17, Article II) X Not Adequate
Y N
State standards followed, and Design Standards Manual notes and details
Adequate limits and perimeter measures out of work areas
All stages protected adequately
Adequate channels
- Provide MS -19, adequate channel analysis, to county basin.
-Show TS (temporary seeding) symbol on C -104.
-Show embankment width, z, on sheet C -402.
- Outlet protections are not designed. Show computations. All dimensions
should be provided on C -402.
Stormwater Management:
(Code Chapter 17, Article III)
Y N
Adequate
X Not Adequate
Enough capture and treatment for on -site areas
Enough detention storage for on -site areas (Less than 1 acre)
Sealed hydrologic and hydraulic computations provided.
- Please submit computations with original signatures on seal.
-Show SWM facility easement and drainage channel easements.
-Show access to swm facility and access easement.
-Stop drainage channel before sanitary line.
-Show ES (end section) for pipe outlet.
-Show inlet shaping IS- 1for Str 3.
- Provide VDOT anchor standard for pipe with 23% slope.
- Provide existing DA for site.
-Show area, CN, and time of concentration within each DA.
-All SWM details should be to scale of 1 " -30' or 1 " -20' with dimensions,
weir inverts labeled and geotextile fabric shown.
- Provide Albemarle County swm notes.
-Use .36 for total area in BMP treatment computations.
- Provide a forebay.
- Biofilter floor needs to be 5% of impervious area. Also, need to provide
only a .5' ponding depth. Current design does not show this to be the case.
- Biofilter plants should be labeled.
[17- 204.f1 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be approved shall be deemed to be withdrawn if the owner fails to submit a revised plan addressing the omitted modifications, terms or conditions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).
I I I -Label the bottom width of ditch. Dso may need to increase.
Mitigation:
(Code Chapter 17, Article III) Adequate
Not Adequate
Y N
Buffers and disturbed areas adequately shown
Adequate plantings at 2:1, or other mitigation provided
N/A
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 is
Approved (please see attached Approval Fact Sheet)
X Not Approved
[17- 204.f1 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).