20171041 Ver 1_MP Addendum_2021_20210907

ID#* 20171041 Version* 1
Select Reviewer:*
Erin Davis
Initial Review Completed Date 09/07/2021
Mitigation Project Submittal - 9/7/2021
Is this a Prospectus, Technical Proposal or a New Site?* r Yes r No
Type of Mitigation Project:*
V Stream r- Wetlands r` Buffer r` Nutrient Offset
(Select all that apply)
Project Contact Information
Contact Name:*
Paul Wiesner
Project Information
...................................................................................
ID#:* 20171041
Existing IDI#
Project Type:
Project Name:
County:
r DMS r Mitigation Bank
Little Sebastian Site
Surry
Document Information
Email Address:*
[e-mail]
Version:
*1
Existing Version
Mitigation Document Type:*
Mitigation Information
File Upload: Little Sebastian _100027_MP Addendum 2021.pdf 4.59MB
Rease upload only one RDFcf the conplete file that needs to be subnitted...
Signature
Print Name:* Paul Wiesner
Signature:*
�X/ I �;" -;-I 1

fires
August 27, 2021
Mitigation Plan Addendum
Little Sebastian Mitigation Site
DMS Project ID # 100027
Contract # 7187
RFP 16-006993 (Issued 9/16/2016)
USACE Action ID: SAW-2017-01507
DWR Project # 2017-1041
Dear NC IRT,
3600 Glenwood Avenue, Suite 100
Raleigh, NC 27612
Corporate Headquarters
6575 W Loop S #300
Bellaire, TX 77401
Main: 713.520.5400
Through stream restoration, enhancement, and preservation, the Little Sebastian Site now
presents 4,573.960 Cool Stream Mitigation Units (SMU) at As -Built. An additional 19.66 SMU
were generated from the addition of JN7 between Final Mitigation Plan approval and construction.
RES and DMS are requesting a mitigation plan addendum for this inclusion.
Mitigation Plan assets: 4,554.3 SMUs
As -Built assets: 4,573.960 SMUs
JN7 is located east of JN3-B and has a 30-acre drainage area. Historically, this pond drained
directly through the dam into JN3-B but due to the relocation of JN3-B, a channel was constructed
in order to connect the pond about 150 linear feet to JN3-B's new location. The restored JN7
includes 37 linear feet within the easement with graded banks, livestakes, new bed material, and
a grade control structure where its confluence on the left bank of JN3-B. The USACE non-
standard buffer width calculation was re -done for the entire project to include reach JN7.
Additionally, RES proposes to add a cross section during MY1 to track the vertical and lateral
stability of this reach.
Attached is the updated USACE non-standard buffer width calculation spreadsheet and map,
credit table and a photograph of the constructed JN7.
Sincerely,
Ryan Medric I Project Manager

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