HomeMy WebLinkAboutWPO201100028 Review Comments Erosion Control Plan 2011-08-18� 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: Willow Glen —E &S and Stormwater Management Plan [WP0201100028]
Plan preparer: Alan Franklin, P.E. [alan @alanfranklinpe.com]
Owner or rep.: Dickerson Ridge, LLC
Plan received date: 12 May 2011
Rev. 1: 2 August 2011
Rev. 2: 16 August 2011
Date of comments: 7 June 2011
Rev. 1: 11 August 2011
Rev. 2: 16 August 2011
Reviewer: John P. Diez — Current Development - Engineering Technician
A. Erosion & Sediment Control plan (WP020 1 1 00028)
1. Please provide sediment trap design computation summaries for Sediment Traps #1, #3, and #5.
(Rev. 1) Comment has been addressed.
2. Please provide a sediment trap detail and specifications.
(Rev. 1) Comment has been addressed.
3. Please provide Dust Control (DC) to the plans.
(Rev. 1) Comment has been addressed.
4. Please extend the diversion dike on the west side of the site so all of the runoff from the
construction entrance can be captured.
(Rev. 1) Comment has been addressed.
5. Please provide outlet protect to the pipes entering Sediment Trap #3.
(Rev. 1) Comment has been addressed.
6. It appears that some of the proposed contours on stage 2 of the E &S plans do not tie in to existing
contours. Please revise.
(Rev. 1) Comment has not been addressed.
(Rev. 2) Comment has been addressed.
7. The construction entrance must be the first thing to be installed. Please revise the Zone B -Stage 1
— Erosion Control Sequence.
(Rev. 1) Comment has been addressed.
8. Zone B — Stage 2 ( #6) of the Erosion Control Sequence states the construction of the bridge to
connect A and B. It appears that this work is not within the limits of disturbance. In addition, a
Utility Stream Crossing must be provided for this work. However, if what is proposed is just the
abutment of the bridge, then please state that on the plans
(Rev. 1) Comment has been addressed.
9. Please provide a temporary construction easement from TMP: 32 -50 for the work being done by
the construction entrance, In addition, please provide a drainage easement for the pipe discharging
to the off -site BMP.
(Rev. 1) Comment has been discarded. Applicant has moved the entrance pipe's location so that
the outfall stays s on their property.
10. [New Comment] Update the SWM plans to show the new location of the pipe.
(Rev. 2) Comment has been addressed.
Engineering Review Comments
Page 2 of 2
11. [New Comment] As per our conversation on 8/11/11, please provide an energy dissipater by the
outfall of the new located pipe toward the existing SWM basin (ie — level spreader (LS))
(Rev. 2) Comment has been addressed.
B. Stormwater Management plan (WP020 1 1 00028)
1. A completed copy of the standard stormwater maintenance agreement and fee for recordation for
any stormwater management facility must be submitted prior to plan approval.
(Rev. 1) Comment has been acknowledged.
2. Please provide a Simple Methods Spreadsheet illustrating the removal rates of pre- and post -
development in Zone B.
(Rev. 1) Comment has been addressed.
The Erosion & Sediment Control and Stormwater Management Plans (WP0201100028)
submitted 16 August 2011 have received Engineering Review and meet Albemarle County
minimum checklist items for approval.
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.
You may contact Ana Kilmer (Albemarle County Department of Community Development) at ext.
3246 for further information on bonding procedures and Maintenance Agreements.
Once the E &SC bond and the SWM bond have been posted, you may contact the Department of
Community Development to arrange a pre - construction meeting with a County Erosion &
Sediment Control Inspector. Should the County Inspector find the limits of disturbance increased
or the need for additional control measures required to protect the site, additional fees will be
required.
If you have any questions, you can reach me, John Diez, at (434) 296 -5832 ext. 3025, or my email:
j diezgalbemarle. org.
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