HomeMy WebLinkAboutWPO202000053 Correspondence 2022-11-10® COLLINS ENGINEERING
September 22, 2022
Emily Cox, P.E.
Department of Community Development
401 McIntire Road
Charlottesville, VA 22902
RE: Pleasant Green Phase 11—VSMP Amendment #1(WP0202000053- Amendment #1)
200 GARRETT ST, SUITE K CHARLOTTESVILLE VA 22902
�434.293.3719 PH 434.293.2813 Fx
www.collins-engineering.com
Thank you for your comments dated September 7, 2022 on the above referenced project. Please seethe detailed responses below
describing how the remaining comments have been addressed.
A. Stormwater Pollution Prevention Plan (SWPPP)
1. This comment is acknowledged. Stamped plans will be inserted into the SWPPP once approved.
B. Pollution Prevention Plan (PPP)
1. An updated PPP has been completed and submitted for approval.
C. Stormwater Management Plan (SWMP)
1. Page 1's sheet index has been revised to include two asterisks beside each sheet that has changed. Please note, while many
sheets have changed the content has not changed much. The intent of this amendment #1 is to update the VSMP plan to
correspond to the current layout/plans under review. From a stormwater and ESC standpoint, very little has changed since
the previously approved set envisioned the development of phase 111. A summary of the more significant changes is listed
below to assist the reviewer with her approval.
2. The plans have been reprinted to avoid the computer -related glitch associated with the last submission.
D. Erosion and Sediment Control Plan (ESCP)
1. All comments have been addressed.
Should you have any questions during your approval process, please feel free to contact Scott Collins at scott@collins-engineering.com or
Graham Murray at graham@collins-engineering.com .
Sincerely,
Graham Murray, PE
Summary of the Pleasant Green Phase 11 VSMP Amendment #1 Changes (W PO 202000053):
Sheet 1
The layout shown corresponds to the current plans under review.
The sheet index has been updated to denote with two asterisks which sheets have changed.
The title, and borders throughout the set, have been revised to reference this set as a plan amendment.
Sheets 2-3
The notes within approved sheets 2 & 3 have been transferred to an 'Existing Conditions Legend' with corresponding numbers.
Sheet 4
The boxed'Unnits of Disturbance Note' located in the middle -bottom portion of the page was added with this amendment.
The same note was added to sheet 16, in the middle -left portion of the page.
Sheets 6 & 8
The stockpile shifted approximately 100' horizontally to correspond with the current layout, which is now shown on sheet 10.
Sheet 8
The interior area where phase III is located is now shown with proposed grading.
The demolition of the existing structure in this same area is now shown.
Sheet 10
The current layout is now shown.
Sheet 15
Subarea D's post-0evelopment time of concentration was reduced from 0.23 hours to 0.18 hours with the current layout,
which is now also shown on this sheet and is reflected in the calculations addendum #1 previously provided/reviewed.
Sheet 16
Subarea D's post-0evelopment 2- and 10-yr routed outflows were updated per the time of concentration revision noted above.
The current layout is now shown.
Sheets 21-24 & 11-13
The current layout is now shown.