20100123 Ver 3_Mitigation Remediation Plans_20220714

From: Davis, Erin B
To: Baker. Caroline D
Subject: FW: Notice of NCDEQ-DMS Repair Completion: Neighbors Branch/Walton Crawley Branch (DMS#92872) - (SAW-
2009-917) (DWR#2010-0123v2) - Catawba 03050101
Date: Thursday, July 14, 2022 11:56:00 AM
Attachments: Neiahbors Br. -Walton Crawley Br. 92872 Repair Summary 2022.odf
Laserfiche Upload: Email & Attachment
DWR#: 20100123 v.3
Doc Type: Mitigation Remediation Plan
From: Wiesner, Paul <[e-mail]>
Sent: Thursday, July 14, 2022 8:19 AM
To: Haywood, Casey M CIV USARMY CESAW (USA) <[e-mail]>; Davis, Erin
B <[e-mail]>; Kim Browning <[e-mail]>; Tugwell, Todd J
CIV USARMY CESAW (US) <[e-mail]>
Cc: Reid, Matthew <[e-mail]>; Allen, Melonie <[e-mail]>
Subject: Notice of NCDEQ-DMS Repair Completion: Neighbors Branch/Walton Crawley Branch
(DMS#92872) - (SAW-2009-917) (DWR#2010-0123v2) - Catawba 03050101
Good morning Casey, Erin, Kim and Todd;
DIMS would like to notify the IRT that a repair at the Neighbors Branch/Walton Crawley Branch
project has been completed. The project is a Design Bid Build (DBB) site located within the Catawba
01 river basin in McDowell County, NC and has an institution date of 8/15/2008. The repair
consisted of six areas. Work began in March 2022 and was completed in April 2022. The as -built
survey was finalized in June 2022. DIMS would like to provide the IRT with a brief memo
summarizing the repair, a photo log and the as -built of the work completed. There were no
significant deviations from the repair construction plans.
The Neighbors Branch/Walton Crawley IRT site visit for regulatory closeout is scheduled for
September 13, 2022. NCDMS will continue to monitor the repairs leading up to this meeting.
Project information is as follows:
Neighbors Branch/Walton Crawley Branch (DBB)
DIMS Project # 92872
Institution Date: 8/15/2008
Catawba River Basin
Cataloging Unit 03050101
McDowell County, North Carolina
USACE Action ID: SAW- 2009-917
DWR#: 2010-0123v2
Proposed Mitigation Project Credits:
3,963.667 SMU (warm)

1.588 WMU (riparian)
NCDEQ- DIMS Project Manager: Matthew Reid, [e-mail], [phone]
Please let me know if you have questions or call to discuss.
Thanks
Paul Wiesner
Western Regional Supervisor
North Carolina Department of Environmental Quality
Division of Mitigation Services
828-273-1673 Mobile
paul.wiesner(c-)ncdenr.gov
Western DMS Field Office
5 Ravenscroft Drive
Suite 102
Asheville, N.C. 28801
D- E�
.11.r
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
MARL RECKTENWALD
V irecror
NORTH CAROLINA
£nvironmentat Quality
Neighbors Branch/Walton Crawley— Repair Update
DMS Project #: 92872
USACE Action ID#: SAW-2009-917
NCDWR Project #: 2010-0122
Catawba 03050101
McDowell County, NC
NCDMS met with the NCIRT to view the Neighbors Branch/Walton Crawley stream and wetland
restoration project on March 24, 2021. The site was scheduled for regulatory closeout in 2021;
however, DIMS withdrew the site due to several concerns identified in the winter 2020/2021. NCDMS
and NCIRT identified six areas that needed repairs during the meeting. NCDMS contracted with KCI to
develop a repair plan for these areas. The conceptual repair plan shared with the IRT in July 2021 was
implemented and all repair work was completed in March and April 2022. NCDMS committed to
providing the NCIRT an update once repairs were completed along with a photo log. This memo is
intended to inform the NCIRT of the completed work, provide a brief description of the work completed
for each area, and provide photo and asbuilt documentation. The Neighbors Branch/Walton Crawley
site visit for regulatory closeout is scheduled for September 13, 2022. NCDMS will continue to monitor
the repairs leading up to this meeting.
Repair Area #1:
Repair Area #1 consisted of a small drainage coming into Neighbors Branch from the right side at
approximately Station 18+75. Drainage from a cleared area outside of the conservation easement
created a deep gully through the easement to the main channel. Unless stabilized, the gully was
expected to continue widen and migrate up valley. The work in this area consisted of regrading this
section and installing a series of buried boulder sills with rock/cobble cascade riffles in between each sill.
A portion outside of the easement was graded, a rock ford crossing was installed, and riffles were
installed to promote positive drainage throughout the repair area. Damaged fencing was replaced with
new five strand barbed wire and disturbed areas were replanted.
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North Carolina Department of Environmental Quality I Division of Mitigation Services
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Repair Area #2:
Repair Area #2 consisted of a small drainage coming into Neighbors Branch from the left side at
approximately station 18+50. Drainage from development outside of the conservation easement
created two small drainage paths and scour within the easement. Unless stabilized, the drainage paths
would continue to migrate and create a larger gully to the main stem. A small detention structure was
installed at the top of the drainage path and the flow path was regraded and riffle enhancements were
installed to prevent further down cutting. Disturbed areas were replanted.
QNc� rth Carolina Department of Environmental Quality I Division of Mitigation Services
z��DE217 West Jones Street 1 1652 Mail Service Center I Raleigh, North Carolina 27699-!652
r �e W nmc�l of Enrimnmenul O�ellry 919,707,8976
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Repair Area #3:
Repair Area #3 is on UT2, which is an ephemeral drainage and is not a credit generating portion of the
project. This reach was originally designed with multiple rock check dams throughout the reach. These
check dams failed and were no longer functioning as intended and several large headcuts were present.
The repair consisted of regrading and evenly distributing elevation loss throughout the reach.
Rock/boulder sills were installed throughout the drainage path to provide grade control along the reach.
A small detention structure was installed just upstream of an existing easement break and a rock ford
crossing was installed in the easement break. A section approximately 80' downstream of the ford was
repaired with several boulder grade control structures and constructed riffles. Damaged fence was
replaced with new five strand barbed wire and disturbed areas were replanted.
D_E Q�
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North Carolina Department of Environmental Quality I Division of Mitigation Services
217 West Jones Street 1 1652 Mail Service Center I Raleigh, North Carolina 27699-!652
919,707,8976
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Repair Area #4:
Repair Area #4 consisted of three locations along UT1. The first location consisted of two perched
culverts that created an erosive plunge pool. The second and third locations involved several failing
boulder step structures. The culvert repairs consisted of installing a rock guarded plunge pool underlain
with filter fabric at each of the culvert outlets. The boulder step repairs consisted of rebuilding the
structure with properly sized boulders, footers, and sills. Riffle enhancements were installed to tie into
downstream stable sections. Disturbed areas were replanted.
. 4
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Repair Area #5:
Repair Area #5 is on UT2 (Walton Crawley Branch), which is an ephemeral drainage and is not a credit
generating portion of the project. This reach was originally designed with multiple rock check dams
throughout the reach. These check dams failed and were no longer functioning as intended and several
large headcuts were present. This area was repaired in a similar approach to Repair Area #3. The repair
consisted of regrading and evenly distributing elevation loss throughout the reach. Rock/boulder sills
were installed throughout the drainage path to provide grade control along the reach.
D_E Q�
�e W nmc�lol Enrimnmenul O�ellry
Ncrth Carolina Department of Environmental Quality I Division of Mitigation Services
217 West Jones Street 1 1652 Mail Service Center I Raleigh, North Carolina 27699-!652
919,707,8976
Ld

Repair Area #6:
Repair Area #6 is at approximately Station 14+00 along UT2 (Walton Crawley Branch). This area consists
of a large headcut at the transition from stream restoration to enhancement. There is significant
vertical loss through this reach due to the headcut and existing topography. The headcut was stabilized
using a riffle cascade structure and boulder structures for grade control. An existing foot bridge was
replaced, and transplants and bare roots were used to reduce the width of the existing foot path.
QNc� rth Carolina Department of Environmental Quality I Division of Mitigation Services
z��DE217 West Jones Street 1 1652 Mail Service Center I Raleigh, North Carolina 27699-!652
r �e W nmc�l of Enrimnmenul O�ellry 919,707,8976
5

D_E Q�
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North Carolina Department of Environmental Quality I Division of Mitigation Services
217 West Jones Street 1 1652 Mail Service Center I Raleigh, North Carolina 27699-!652
919,707,8976
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