20161076 Ver 1_Mitigation Remediation Plan_20190729

Strickland, Bev
From:
Browning, Kimberly D CIV USARMY CESAW (US)
<[e-mail]>
Sent:
Monday, July 29, 2019 4:49 PM
To:
Tugwell, Todd J CIV USARMY CESAW (US); Davis, Erin B; Haupt, Mac; Bowers, Todd;
Wilson, Travis W.; Leslie, Andrea J; Steve Kichefski; Jones, M Scott (Scott) CIV USARMY
CESAW (US); McLendon, C S CIV USARMY CESAW (US); Wicker, Henry M Jr CIV
USARMY CESAW (US); [e-mail]; Crumbley, Tyler A CIV USARMY
CESAW (USA)
Cc:
David Tuch; Grant Ginn; Tsomides, Harry; Allen, Melonie; Stanfill, Jim; Baumgartner,
Tim; Wiesner, Paul
Subject:
[External] Notice of NCDMS Adaptive Management Plan Review / Fletcher Stream and
Wetland/ Henderson County/ SAW -2016-02205 (UNCLASSIFIED)
Attachments:
Fletcher Str & Wtl_100004_CR Memo -July 2019.pdf, Fletcher Str & Wtl_100004
.AMP -July 2019.pdf
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CLASSIFICATION: UNCLASSIFIED
The below referenced Adaptive Management Plan review has been requested by NCDMS. Per Section 332.8(0)(9) of the
2008 Mitigation Rule, this review follows the streamlined review process, which requires an IRT review period of 15
calendar days from this email notification. Please provide any comments by 5 PM on the 15 -day comment deadline
shown below. Comments provided after the 15 -day comment deadline (shown below) may not be considered.
At the conclusion of this comment period, a copy of all comments will be provided to NCDMS and the NCIRT along with
District Engineer's intent to approve or disapprove this Final As -Built and initial credit release.
Fletcher Stream and Wetland Site
DMS Project # 100004
RFP: 16-006808 - Issued 2/15/16
Institution Date: 10/4/2016 - Full Delivery French Broad River Basin Cataloging Unit 06010105 Henderson County, North
Carolina
USACE Action ID: SAW -2016-02205
DWR# 16-1076
Proposed Mitigation Plan Assets:
10,011.3 SMUs
8.91 Riparian WMUs
As -Built MYO Project Credits:
10,011.3 SMUs
8.91 Riparian WMUs

Provider: EW Solutions LLC - EW Solutions LLC Contact: David Tuch, [e-mail] , 828-253-6856
Designer: Stantec - Stantec Contact: Grant Ginn, [e-mail], [phone]
NCDEQ- DMS PM: Harry Tsomides, [e-mail], 828-545-7057
Fletcher Str & Wtl_100004_AMP_July 2019.pdf
https:Hncconnect.sharepoi nt.com/sites/deq_ext/dwm_i rt/AsBuilt%20Report%20%20Drawi ng/Fletcher%20100004/Flet
cher%20Str%20&%20Wt1_100004_AM P_J u ly%202019. pdf
Fletcher Str & Wtl_100004_CR Memo—July 2019
https:Hncconnect.sharepoi nt.com/sites/deq_ext/dwm_i rt/AsBuilt%20Report%20%20Drawi ng/Fletcher%20100004/Flet
cher%20Str%20&%20Wt1_100004_CR%20Memo_J u ly%202019. pdf
15 -Day Comment Start Date: July 29, 2019 15 -Day Comment Deadline: August 13, 2019 45 -Day Credit Release Approval
Deadline: September 13, 2019
The IRT visited the Fletcher Stream and Wetland Site on Tuesday July 23, 2019. The full delivery provider (EW Solutions)
is proposing an adaptive management plan to minimize/ alleviate hydrologic trespass. The work will involve regrading
areas of the wetland adjacent to Weston Creek and replanting those areas in the 2019 dormant season.
At the site visit, the IRT proposed a 15 -day review period for the adaptive management plan. The proposed adaptive
management plan is attached for IRT review.
In addition, the IRT requested a proposal to address credit release on the site. DMS and the full delivery provider
request that the project continue on the current monitoring trajectory with 2019 as Monitoring Year 1 (MY1). The
attached memorandum describes the project credit release proposed by DMS.
Kim Browning
Mitigation Project Manager, Regulatory Division I U.S. Army Corps of Engineers
3331 Heritage Trade Dr, Ste. 105 1 Wake Forest, NC 27587 1 919.554.4884 x60
BUILDING STRONG (r)
CLASSIFICATION: UNCLASSIFIED

ADAPTIVE MANAGEMENT PLAN
Fletcher Mitigation Site
Henderson County, NC
Project Number: 100004
Contract Number: 006997
RFP: 16-006808
French Broad River Basin
Cataloging Unit # 06010105
Prepared for:
North Carolina Department of Environmental Quality
Division of Mitigation Services
1652 Mail Service Center
Raleigh, NC 27699-1652
July 2, 2019
Fletcher Mitigation Site July 2, 2019
DMS# 100004

1.0 ISSUE OF CONCERN
Construction of the Fletcher Mitigation Site (the Site) was completed in March of 2019. Prior to the
completion date, grading activities were completed on the wetland area adjacent to Weston
Creek in September of 2018. Since the completion of grading activities for the wetlands there
have been several significant rainfall events, including two 5 in rainfall events that resulted in major
flooding on the downstream receiving waters of Hooper's Creek. The frequency of the
overtopping events has been attributed to the exceptionally high rainfall in the region during the
previous twelve to eighteen months.
The total rainfall in the Fletcher area during the preceding year has been over 80 inches which is
33 inches above the average annual rainfall for 47 inches. Overbank flow has occurred as
expected for the higher rainfall events. However, on April 3, 2019 the adjacent property owner
raised the concern that flood flows were exiting the Site and flowing onto his property to a higher
degree than in the past. Specifically, floodwaters were exiting the easement at a location along
the western boundary (see Figure 1) and then flowing north along the boundary line and into field
between the easement and Hooper's Creek. He expressed concern that this additional flow was
damaging part of his fields and would result in some of the area being unusable for crop
production. This Adaptive Management Plan has been developed in order to address the issue of
this potential hydrologic trespass.
2.0 PROPOSED CORRECTIVE ACTION
The adjacent property owner requested that ditches be installed within the conservation
easement to collect the flood flows prior to entering his property. However, an internal
examination of the as -built surface was conducted to develop a better understanding of the
problem. This examination determined that deviations in the constructed surface from the design
surface have potentially contributed to this issue. Some of the deviations, while being relatively
minor and within construction tolerances, have the potential to shift a portion of the flood flows
from the east floodplain to the west floodplain. However, a significant deviation occurs on the
west floodplain which may be contributing significantly to this issue. This deviation created a linear
depression running northward which may be capturing additional flood flows and routing them
out of the easement. It is possible this linear depression is the remnant of the haul route that was
in place during the construction of the downstream end of Weston Branch and that final grading
out of the haul route never corrected any settling or shifting of the landscape along this corridor.
The proposed plan (see Figure 2) is to regrade portions of the floodplain to address this issue. This
regrading will include correcting the deviations from the original design grading plan and also will
provide for additional grading that will move flood flows northward through the easement without
exiting to the west. The flood flows will be directed to the northern boundary of the wetland area
Fletcher Mitigation Site
DMS# 100004

and then conveyed along the west side of Weston Creek. At the narrowest point the floodplain
conveyance grading will have a top width of approximately 35 ft and a depth of approximately
1 foot. This will have a capacity to carry the 10 -year flood flow under fully vegetated conditions.
Over time as mature vegetation begins to shade out the herbaceous layer flow conveyance
should improve. Upstream of the easement constriction the flood conveyance area will be
expanded to improve storage and retention of flood flows. The flood conveyance grading will
need to extend to the lower end of Weston Creek in order to provide for continuation of the flood
conveyance and tie the grades into the existing stream.
The regrading effort will affect approximately 4 acres of the wetland restoration area. The change
in surface elevation will generally be less than 6 inches, with a few small areas changing up to 12
inches. No regrading will occur within 10 feet of the restored Weston Creek and all grading will be
within the tolerances allowed to maintain wetland hydrology. The area impacted by regrading
activities will be stabilized with temporary and permanent seed mix and replanted in the fall using
the specifications of the original planting plan.
3.0 PROPOSED MONITORING REVISION
After regrading is complete, six vegetation monitoring plots and ten groundwater gauges will be
re -installed and the monitoring monuments will be resurveyed. Additionally, ground surface
topography of the regraded areas will re -surveyed. Since the proposed Adaptive Management
Plan will impact existing ground surface and vegetation, it is proposed that impacted wetland
gauge and vegetation plot monitoring be extended by one additional year. It is proposed that
all stream reaches and vegetation monitoring stations that are not affected by this effort continue
on the present monitoring schedule.
Fletcher Mitigation Site
DMS# 100004

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ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
TIM BAUMGARTNER
Director
ILII Dlu [o77�\� 111u A
NORTH CAROLINA
Environmental Quality
TO: Todd Tugwell, Chair, Interagency Review Team (IRT)
FROM: Paul Wiesner, DEQ - DMS Western Regional Supervisor
CC: David Tuch, EW Solutions
Grant Ginn, Stantec
Harry Tsomides, DMS - Project Manager
Melonie Allen, DMS — Credit Release Coordinator
Jim Stanfill, DMS — Asset Manager
Tim Baumgartner, DMS — Division Director
SUBJECT: Fletcher Stream and Wetland Site - Credit Release Schedule
DMS # 100004
USACE Action ID# SAW -2016-02205
DWR# 16-1076
Henderson County, North Carolina
DATE: July 29, 2019
On July 23, 2019, representatives from DMS, EW Solutions (Full Delivery Provider), Stantec, and the
IRT met on the project site to discuss EW Solutions' & Stantec's proposed Adaptive Management Plan
(dated July 2, 2019). The Adaptive Management Plan has been developed in order to address a
potential hydrologic trespass issue identified on the site. During the site visit, the IRT was agreeable
to the proposed repair work.
The Adaptive Management Plan notes; "After regrading is complete, six vegetation monitoring plots
and ten groundwater gauges will be re -installed and the monitoring monuments will be resurveyed.
Additionally, ground surface topography of the regraded areas will be re -surveyed. Since the proposed
Adaptive Management Plan will impact existing ground surface and vegetation, it is proposed that
impacted wetland gauge and vegetation plot monitoring be extended by one additional year. It is
proposed that all stream reaches and vegetation monitoring stations that are not affected by this effort
continue on the present monitoring schedule. "
At the site meeting, the IRT requested a proposal to address the project's Credit Release Schedule. A
copy of the asset table and asset map from the 2019 As -Built Baseline Monitoring Report are attached.
DMS and EW Solutions do not anticipate any mitigation credit changes from the proposed Adaptive
NORTHCAROLINAD_� ��/�
Depfflt of EnWffl I Quay
North Carolina Department of Environmental Quality I Division of Mitigation Services
217 W. Jones Street 1 1652 Mail Service Center I Raleigh, North Carolina 27699-4652
919.707.8976

Management Plan work. Upon IRT review and approval, the proposed Adaptive Management Plan
work will commence immediately. Re -planting will be completed no later than the end of 2019.
The proposed work will impact 100% of the project's COLD stream credits (2,758 SMUs) and 100%
of the project's riparian WETLAND credits (8.91 WMUs). 100% of the project's COOL stream credits
(7,253.30 SMUs) will not be impacted by the proposed Adaptive Management work in anyway. The
COOL stream credits represent 73% of the project's total stream credits.
DMS and EW Solutions request that the project continue on the current monitoring trajectory with
Credit Release proposed as follows:
The initial 30% credit release (Year 0/ As -Built) for the entire site (10,011.3 SMUs & 8.91
WMUs) will be requested upon completion of the proposed Adaptive Management Plan work
and submittal of a summary letter and re -surveyed ground surface topography of the regraded
areas (provided by EW Solutions). The IRT initiated the review of the final As -Built report on
June 25, 2019. DMS will hold the full 30% credit release request until the IRT has also
reviewed the completion summary letter and revised maps.
• 2019 will represent Monitoring Year 1 (MY1). A MY1 report will be completed by EW
Solutions and will include all of the information associated with the completed Adaptive
Management Plan work. DMS will provide the final MY1 report to the IRT in 2020 per the
standard credit release process.
• DMS will request the Year 1 Monitoring credit release for COOL stream credits only at the
2020 credit release meeting.
• The MY1 credit release request for all COLD stream credits and all riparian WETLAND
credits will be delayed by 1 -year. This 1 year off set will continue until the IRT agrees to
release all project credits concurrently OR the site reaches Monitoring Year 8 (MY8).
• The 10% Stream Bankfull Standard will be requested upon successful completion of the
success criteria on all project streams as specified in the IRT approved mitigation plan.
If you have any questions, please contact me at any time at [phone] or email me at
paul.wiesner(c�r�,ncdenr.gov .
Sincerely,
Cl�f�f�z WG&
Paul Wiesner
Western Regional Supervisor
North Carolina Department of Environmental Quality
Division of Mitigation Services
828-273-1673 Mobile
paul.wiesnerkncdenr. gov
Attachment: Fletcher Stream and Wetland Asset Table and Asset Map
0RRIHC�114A
Department at Environmental Nality
North Carolina Department of Environmental Quality I Division of Mitigation Services
217 W. Jones Street 1 1652 Mail Service Center I Raleigh, North Carolina 27699-1652
919.707.8976

* Mitigation plan credits account for breaks in conservation easements and are based on design stream stationing and taken from the approved mitigation plan. Mitigation plan credits are the same as the approved mitigation plan.
^ Based on centerline calculations from the as -built survey, accounts for breaks in conservation easement and utility right-of-ways.
Project Credits
Restoration Level
Stream
Warm Cool Cold
Riparian Wetland Non -Rip Coastal
Riverine Non-Riv Wetland Marsh
Restoration
6770.000 2758.000
Table 1. Project Mitigation Assets and Components
Fletcher Mitigation Site
Re-establishment
Project Segment
Existing
Footage or
Acrea
Mitigation
Plan Footage
or Acreage
Mitigation Category
Restoration
Level Priority Level
Mitigation
Ratio (X:1)
Mitigation
Plan Credits*
As-Built
Centerline
Footage or
Acreage^
Comments
Enhancement II
358.400
Creation
Preservation
124.900 -
Fletcher Creek la
607
461
Cool
EII
NA
2.5
184.400
461
Fletcher Creek lb
498
377
Cool
R
PI
1.0
377.000
378
Fletcher Creek lc
1,791
1,540
Cool
R
PI
1.0
1,540.000
1,507
Less 51' for crossing
Fletcher Creek 2a
1,587
1,296
Cool
R
PI/ PII
1.0
1,296.000
1,290
Less 33' for utility crossing; Less than 30' buffer for 86 LF
Fletcher Creek 2b
1,586
1,470
Cool
R
PII
1.0
1,470.000
1,558
Less 33' for outlet protection and 51' and 73' for 2 crossings
Raccoon Branch la
489
489
Cool
P
NA
10.0
48.900
489
.001 ac temporary impact to Wetland
Raccoon Branch lb
461
461
Cool
P
NA
10.0
46.100
461
.006 ac temporary impact to Wetland B
Raccoon Branch lc
208
153
Cool
EII
NA
2.5
61.200
153
Less 53' for crossing; Stream length not included in wetlands
Raccoon Branch Id
354
448
Cool
R
PI
1.0
448.000
440
Pine Branch 1
380
299
Cool
P
NA
10.0
29.900
299
Coates Branch Reach la
292
282
Cool
EII
NA
2.5
112.800
282
Coates Branch Reach lb
598
606
Cool
R
PI
1.0
606.000
598
.016 ac temporary impact to Wetland D
Coates Branch Reach lc
727
708
Cool
R
PI
1.0
708.000
702
Less 44' for crossing
Coates Branch Reach Id
318
325
Cool
R
PI
1.0
325.000
321
Weston Creek In
1,645
1,954
Cold
R
PI
1.0
1,954.000
1,916
Less 29' for ROW and outlet protection
Weston Creek lb
708
804
Cold
R
PI
1.0
804.000
798
Wetland A
0.03
0.03
RNR
Enh
NC
NC
NC
0.001 ac temporary impact to Wetland A
Wetland B
0.11
0.11
RNR
Enh
NC
NC
NC
0.006 ac temporary impact to Wetland
Wetland D
0.05
0.05
RNR
Eh
NC
NC
NC
0.016 ac temporary impact to WetlandA
Wetland E
8.910
8.9
RNR
Re-Est
1.0
8.910
8.910
* Mitigation plan credits account for breaks in conservation easements and are based on design stream stationing and taken from the approved mitigation plan. Mitigation plan credits are the same as the approved mitigation plan.
^ Based on centerline calculations from the as -built survey, accounts for breaks in conservation easement and utility right-of-ways.
Project Credits
Restoration Level
Stream
Warm Cool Cold
Riparian Wetland Non -Rip Coastal
Riverine Non-Riv Wetland Marsh
Restoration
6770.000 2758.000
-
Re-establishment
8.910
Rehabilitation
-
Enhancement
Enhancement I
-
Enhancement II
358.400
Creation
Preservation
124.900 -
Total Credits
7253.300 2758.000
8.910
i Project credits reflect the sum of credits outlined in the approved mitigation plan.
Fletcher Stream and Wetland Mitigation Site 13 Equinox
NCDMS Project No. 100004 Baseline Monitoring Document
Monitoring Year 0 of 7

Figure 2. Asset Map