20180179 Ver 1_Year 1 Monitoring Report_2021_20211202

ID#* 20180179
Select Reviewer:
Erin Davis
Initial Review Completed Date 12/02/2021
Mitigation Project Submittal - 12/2/2021
Version* 1
Is this a Prospectus, Technical Proposal or a New Site?*
Type of Mitigation Project:*
Stream Wetlands Buffer Nutrient Offset
(Select all that apply)
Project Contact Information
Contact Name:*
Cara Conder
Project Information
ID#:* 20180179
Existing ID#
Project Type:
Project Name:
County:
DMS • Mitigation Bank
Grassy Creek Tributaries
Surry
Document Information
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[e-mail]
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Mitigation Monitoring Report
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WATER & LAND
SOLUTIONS
December 2, 2021
US Army Corps of Engineers: Wilmington District
Asheville Regulatory Field Office
Attn: Steve Kichefski
151 Patton Avenue, Suite 208
Asheville, NC 28801
RE: Grassy Creek Tributaries Mitigation Bank, WLS Yadkin 01 Umbrella Bank —Third Credit Release
Request (Monitoring Year 1)
Dear Mr. Kichefski:
Water & Land Solutions (WLS) respectfully requests the third credit release on the Grassy Creek
Tributaries Mitigation Project for 10% of the total stream credits. This credit release amount would be
498.70 stream credits. Also included in this letter is the anticipated bank credit release schedule per the
USACE-Wilmington template and the WLS stream credit ledger.
The following items have been completed regarding completion of Task 3: Monitoring Year 1(MY1) Report
and the monitoring financial assurance (casualty insurance policy) is active. If you need any additional
information, please contact me directly.
Sincerely,
Cara Conder
Sr. Project Manager
7721 Six Forks Rd., Suite 130
Raleigh, NC 27615
Mobile Phone: [phone]
Email: [e-mail]
waterlandsolutions.com 1 7721 Six Forks Rd, Ste 130, Raleigh, NC 27615 1 919-614-5111

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MY1 Monitoring Report
Grassy Creek Tributaries Mitigation Project
WLS Yadkin 01 Umbrella Mitigation Bank
Monitoring Year 1
Calendar Year of Data Collection: 2021
Private Commercial Mitigation Bank for
Stream Compensatory Mitigation Credits
Yadkin River Basin (CU 03040101)
(Warm Water Thermal Regime)
USACE Action ID Number: SAW-2017-02528
Surry County, NC
Data Collection Period: November 2021
Submission Date: December 2021
Prepared for:
U.S. Army Corps of Engineers, Wilmington District
69 Darlington Avenue
Wilmington, North Carolina 28403-1343
Prepared by:
WATER & LAND SOLUTIONS
7721 SIX FORKS ROAD, SUITE 130, RALEIGH, NC 27615
{919) 614 - 5111 I woterlondsolutions.com

Table of Contents
1 Project Summary...................................................................................................................................1
1.1 Project Location and Description..................................................................................................1
1.2 Project Goals and Objectives........................................................................................................1
1.3 Monitoring Schedule and Reporting.............................................................................................2
1.4 Project Success Criteria.................................................................................................................2
1.4.1 Single -Thread Streams..........................................................................................................2
1.4.2 Vegetation.............................................................................................................................3
1.4.3 Visual Assessment.................................................................................................................4
2 Project Mitigation Components............................................................................................................4
2.1 Project Components.....................................................................................................................4
3 Monitoring Year 1 Assessment and Results..........................................................................................4
3.1 Morphological Assessment...........................................................................................................4
3.1.1 Stream Horizontal Pattern & Longitudinal Profile................................................................4
3.1.2 Stream Horizontal Dimension...............................................................................................5
3.1.3 Substrate...............................................................................................................................5
3.2 Stream Hydrology......................................................................................................................... 5
3.2.1 Stream Flow.......................................................................................................................... 5
3.2.2 Bankfull Events......................................................................................................................6
3.3 Vegetation.....................................................................................................................................6
4 Methods................................................................................................................................................6

LIST OF APPENDICES
Appendix A Background Tables
Table 1 Project Mitigation Components
Table 2 Project Activity, Reporting History, and Contacts
Table 3 Project Information and Attributes
Appendix B Visual Assessment Data
Figure la-c Current Condition Plan View (CCPV)
Photos Stream Station Photographs (Cross -Sections and Photo Stations)
Vegetation Plot Photographs
Additional Photos
Appendix C Vegetation Plot Data
Table 4
Red -line Plant List
Table 5a
Stem Counts and Densities Table
Table 5b
Vegetation Performance Standards Summary Table
Appendix D
Stream Measurement and Geomorphology Data
MY1 Cross -Sections
Table 6a
Baseline Stream Data Summary
Table 6b
Cross-section Morphology Data
Appendix E Hydrologic Data
Table 7 Verification of Bankfull Events
Figure 2 Flow Gauge and Crest Gauge Installation Diagrams
Figure 3 Flow Gauge and Crest Gauge Graphs
Table 8 Monthly Rainfall Data
Appendix F Correspondence
As -Built Site Visit Meeting Minutes

1 Project Summary
1.1 Project Location and Description
The Grassy Creek Tributaries Mitigation Project ("Project") is a mitigation bank under the WLS Yadkin 01
Umbrella Mitigation Bank ("Bank"). The Project is located approximately five miles south of the Town of
Pilot Mountain in Surry County, NC (36.319329°,-80.463066°). The Project is located within the 8-digit
HUC 03040101, in the NC Department of Environmental Quality (NCDEQ) sub -basin 03-07-02 (Warm
Water Thermal Regime), in the Ararat River & Upper Yadkin River Local Watershed Plan (LWP) Study Area
(LWP-2008-51), and in the Target Local Watershed (TLW) 03040101110070, all in the Upper Yadkin River
Basin.
The Project involved the restoration, enhancement, and permanent protection of eight stream reaches
(R1, R2, R3, R4, R5, R6, R6A and R7) and their riparian buffers, totaling approximately 6,084 linear feet of
streams. The Project will provide significant ecological improvements and functional uplift through stream
and aquatic habitat restoration and through decreasing nutrient and sediment loads within the
watershed. The mitigation plan provides a detailed project summary and Table 1 provides a summary of
project assets. Figure 1 illustrates the project mitigation components.
Monitoring Year 1 (MY1) activities occurred during mid -November 2021. This report presents the data for
MY1. The Project meets the MY1 success criteria for stream hydrology, stream horizontal and vertical
stability, streambed condition and stability, and vegetation. Based on these results, the Project is on
trajectory to meet interim and final success criteria. For more information on the chronology of the project
history and activity, refer to Appendix A, Table 2. Relevant project contact information is presented in the
appendices in Table 2 and project background information is presented in Table 3.
1.2 Project Goals and Objectives
The Project will meet the goals and objectives described in the Grassy Creek Tributaries Final Approved
Mitigation Plan and will address general restoration goals and opportunities outlined in the North Carolina
Division of Mitigation Services (DMS) Upper Yadkin River Basin Restoration Priority Plan (RBRP) (DEQ
2009). More specifically, watershed goals and management strategies described in the Ararat River and
Upper Yadkin LWP will be met by:
• Reducing sediment, soil erosion, turbidity, and nutrient inputs such as fecal coliform bacteria,
nitrogen, and phosphorus to Grassy Creek and the Upper Yadkin River Watershed.
• Restoring, enhancing, and protecting headwater streams, wetlands, riparian buffers, and aquatic
habitat functions.
• Improving riparian corridor management and targeting restoration of impacted streams and
riparian buffer areas.
• Promoting agronomic farm management techniques and implementing agricultural BMPs and
water quality features such as livestock exclusion fencing, alternative watering systems, and
nutrient management.
To accomplish these project -specific goals, the following objectives will be measured to document overall
project success:

• Provide a floodplain connection to the incised Project stream reaches by lowering bank height
ratios (BHRs) to less than 1.2, thereby promoting more natural or overbank flood flows,
• Improve bedform diversity by increasing scour pool spacing and depth variability,
• Increase native species riparian buffer and vegetation density/composition along streambank and
floodplain areas that meet requirements of a minimum 30-foot-wide and 210 stems/acre after
the monitoring period,
• Improve aquatic habitat and fish species diversity and migration through the addition of in -stream
cover and native woody debris,
• Site protection through a 13-acre conservation easement more than 30 feet from the top of the
restored streambanks, that will protect all streams, wetlands, and aquatic resources in perpetuity.
1.3 Monitoring Schedule and Reporting
The Project will be monitored on a regular basis with physical inspections to occur a minimum of twice
per year throughout the seven-year post -construction monitoring period, or until performance standards
are met. The measure of stream restoration success will be documented by bankfull flows and no change
in stream channel classification. The measure of vegetative success for the Project will be the survival of
at least 210 seven -year -old trees per acre with an average height of eight feet at the end of year seven of
the monitoring period. Site inspections and monitoring reports will also identify components and features
that require routine maintenance or adaptive management. The easement holder and long-term steward
is Unique Places to Save (UP2S). UP2S will be responsible for annual inspection of the Project after close-
out to ensure that restrictions in place required by the recorded Conservation Easement document are
being upheld.
1.4 Project Success Criteria
The success criteria for the Project will follow approved performance standards and monitoring protocols
from the final approved mitigation plan; which was developed in compliance with the USACE October
2016 Guidance, USACE Stream Mitigation Guidelines (April 2003 and October 2005), and 2008
Compensatory Mitigation Final Rule. Cross-section and vegetation plot data will be collected in Years 0, 1,
2, 3, 5, and 7. Stream hydrology data and visual monitoring will be reported annually. Specific success
criteria components and evaluation methods are described below.
1.4.1 Single -Thread Streams
Stream Hydrology: Four separate bankfull or over bank events must be documented within the seven-
year monitoring period and the stream hydrology monitoring will continue until four bankfull events have
been documented in separate years. Stream hydrology monitoring will be accomplished with pressure
transducers installed in pools and correlating sensor depth to top of bank elevation (see appendix E for
installation diagrams). Recorded water depth above the top of bank elevation will document a bankfull
event. The devices will record water depth hourly and will be inspected quarterly. In addition to the
pressure transducers, traditional cork gauges will be installed at bankfull elevation and will be used to
document bankfull events with photographs.
Stream Profiles, Vertical Stability, and Floodplain Access: Stream profiles, as a measure of vertical
stability and floodplain access will be evaluated by looking at Bank Height Ratios. In addition, observed
bedforms should be consistent with those observed for channels of the design stream type(s). The BHR
shall not exceed 1.2 along the restored Project stream reaches. This standard only applies to restored
4

reaches of the channel where BHRs were corrected through design and construction. Vertical stability will
be evaluated with visual assessment, cross -sections and, if directed by the IRT, longitudinal profile.
Stream Horizontal Stability: Cross -sections will be used to evaluate horizontal stream stability on restored
streams. There should be little change expected from as -built restoration cross -sections. If measurable
changes do occur, they should be evaluated to determine if the changes represent a movement toward a
more unstable condition (e.g., downcutting, erosion) or a movement towards increased stability (e.g.,
settling, vegetation establishment, deposition along the streambanks, decrease in width/depth ratio).
Cross -sections shall be classified using the Rosgen Stream Classification method and all monitored cross -
sections should fall within the quantitative parameters defined for channels of the design stream type.
Reference photo transects will be taken at each permanent cross-section. Lateral photos should not
indicate excessive erosion or continuing degradation of the streambanks. Photographs will be taken of
both streambanks at each cross-section. A survey tape stretched between the permanent cross-section
monuments/pins will be centered in each of the streambank photographs. The water elevation will be
shown in the lower edge of the frame, and as much of the streambank as possible will be included in each
photo. Photographers will attempt to consistently maintain the same area in each photo over time.
Streambed Material Condition and Stability: Representative streambed material samples will be collected
in monitoring years 5 and 7 at riffle locations in restored stream reaches. The post -construction riffle
substrate samples will be compared to the riffle substrate data collected during the existing conditions
assessment. Any significant changes (e.g., aggradation, degradation, embeddedness) will be noted after
streambank vegetation becomes established and a minimum of two bankfull flows or greater have been
documented. If changes are observed within stable riffles and pools, additional sediment transport
analyses and calculations may be required.
Jurisdictional Stream Flow: Monitoring of stream flow will be conducted to demonstrate that the restored
stream systems classified as intermittent exhibit surface flow for a minimum of 30 consecutive days
throughout some portion of the year during a year with normal or below normal rainfall conditions.
Stream flow monitoring will be accomplished with pressure transducers installed in pools and correlating
sensor depth to the downstream top of riffle elevation. If the pool water depth is at or above the top of
riffle elevation, then the channel will be assumed to have surface flow (see appendix E for installation
diagrams). The devices will record water elevation twice per day and will be inspected quarterly to
document surface hydrology and provide a basis for evaluating flow response to rainfall events.
1.4.2 Vegetation
Vegetation monitoring will occur in the fall each required monitoring year, prior to leaf drop. Plots will be
monitored in years 1, 2, 3, 5, and 7. Vegetative success for the Project during the intermediate monitoring
years will be based the survival of at least 320, three -year -old trees per acre at the end of Year 3 of the
monitoring period; and at least 260, five -year -old, trees per acre that must average six feet in height at
the end of Year 5 of the monitoring period. The final vegetative restoration success criteria will be
achieving a density of no less than 210, seven -year -old stems per acre that must average eight feet in
height in Year 7 of monitoring. Volunteer species on the approved planting list that meet success criteria
standards will be counted towards success criteria.
4

1.4.3 Visual Assessment
WLS will conduct visual assessments in support of mitigation performance monitoring. Visual assessments
of all stream reaches will be conducted twice per monitoring year with at least five months in between
each site visit for each of the seven years of monitoring. Photographs will be used to visually document
system performance and any areas of concern related to streambank and bed stability, condition of in -
stream structures, channel migration, active headcuts, live stake mortality, invasive plant species or
animal browsing, easement boundary encroachments, cattle exclusion fence damage, and general
streambed conditions. Permanent photo points will be at the cross -sections, crossings, and Enhancement
II reaches.
2 Project Mitigation Components
2.1 Project Components
The Project mitigation components include a combination of Stream Restoration and Enhancement
activities, as summarized in the table below. These stream credits are based on the Addendum to the
Mitigation Plan and repair plan stream lengths for the repaired reaches (R2 and R3); all other reaches did
not deviate from the mitigation plan.
Table 1. Mitigation Pion Stream Mitigation Credits (SMCs)
Stream Restoration (PI)
2,343
2,323
1:1
2,2431
Stream Restoration (PI)
651
426
1:1
3761,2
Stream Restoration (PI)
1,229
1,178
1:1
1,1581,2
Stream Enhancement II
1,127
1,122
5:1
225
Stream Restoration (PI/PII)
329
329
1:1
329
Stream Restoration (PI/PII)
242
247
1:1
247
Stream Restoration (PI/PII)
54
54
1:1
54
Stream Restoration (PI/PII)
376
405
1:1
3551
Note 1: *SMCs account for deducting crossings/easement breaks. No mitigation credits were calculated outside
the conservation easement boundaries.
Note 2: SMCs on R2 and R3 are the repair plan lengths and were the reaches that were repaired/redesigned.
3 Monitoring Year 1 Assessment and Results
The dates of Year 1 monitoring activities are detailed in Appendix A, Table 2. All Year 1 monitoring data is
presented in this report and in the appendices. The Project is on track for meeting stream and vegetation
interim success criteria. All monitoring device locations are depicted on the CCPV (Figures la-c).
3.1 Morphological Assessment
3.1.1 Stream Horizontal Pattern & Longitudinal Profile
Visual assessment was utilized for assessment of MY1 horizontal and vertical stability. The visual
assessments for each stream reach documented MY1 stream channel pattern and longitudinal profiles,

and in -stream structure location/function still closely match the profile design parameters and
MYO/baseline conditions (Appendix D). The MY1 planform geometry or pattern fall within acceptable
ranges of the design parameters for all restored reaches. Minor channel adjustments in riffle slopes, pool
depths and pattern were observed based on natural sediment migration and stream bank vegetation
establishment but do not present a stability concern.
During MY1, a log J-hook structure near station 57+10 was piping (SPA-1). The structure is stable, but not
performing as intended. Also, during MY1 minor erosion was observed on the left floodplain slope of R7
due to field runoff (SPA-2). The eroded area was re -seeded and filled with hay bales to prevent further
erosion on August 2nd, 2021. Coir logs were placed along the top of the slope to disperse and slow the
flow of water during future rain events until vegetation became more established. Both areas will be
monitored closely, and any remedial actions will be documented in the MY2 report (Photos in Appendix
B).
3.1.2 Stream Horizontal Dimension
The MY1 channel dimensions generally match the design parameters and are within a stable range of
tolerance. Twelve cross -sections were installed on restoration reaches with six located in riffles and six
located in pools. All twelve permanently installed cross -sections show little to no change in BHR or bankfull
area when compared to as -built measurements, and BHRs are less than 1.2. It is expected that over time
some pools may accumulate fine sediment and organic matter, however, this is not an indicator of channel
instability. Maximum riffle depths are expected to fluctuate slightly throughout the monitoring period as
the channels adjust to restored flow regime. Cross-section overlays and measurements can be found in
Appendix D.
3.1.3 Substrate
Representative streambed material samples will be collected in years 5 and 7 at the locations where riffles
are installed in reaches that are proposed for restoration as part of the Project.
3.2 Stream Hydrology
3.2.1 Stream Flow
Three pressure transducers (flow gauges) were installed in April 2021 on reaches R1, R5, and R6. All the
flow gauges documented that the stream exhibited surface flow for a minimum of 30 consecutive days
during the monitoring year. FG-3 had a transducer malfunction resulting in lost data from April 23rd to
May 25t", 2021. The gauge was repaired on May 25t", 2021. See the chart below and Appendix E for flow
gauge information. Additionally, to determine if rainfall amounts are normal for the given year,
precipitation data was collected from CROWS Pilot Mountain weather station (CBTN7) approximately
one mile north of the site.
4

riow uauge uara
Name Location Consecutive
oa oT
Flow
i ota i &ays oT
Cumulative
i ota i &.
Cumulative No
209
FG-1 R1
4/23/2021—
days
11/17/2021
Flow
209 days
,
0 days
FG-2 R5 237
3/26/2021 —
days
11/17/2021
259 days
62 days
FG-3 R6 177
5/25/2021 —
days
11/17/2021
177 days
0 days
3.2.2 Bankfull Events
During MY1, multiple bankfull events were recorded on the pressure transducer (crest gauge) location on
R3. Crest Gauge CG-1 on R3 recorded two events with a maximum event of 0.63 feet on September 21'
2021. The associated data are located in Appendix E.
3.3 Vegetation
Monitoring of the seven permanent vegetation plots was completed during November 2021. Vegetation
data can be found in Appendix C with the associated photos located in Appendix B. The MY1 average
planted density is 613 stems per acre, which exceeds the interim measure of vegetative success of at least
320 planted stems per acre at the end of the third monitoring year. In addition, every vegetation plot also
met the interim measure of success and had 445 to 729 stems per acre. Volunteer species were not noted
at MY1 but are expected to establish in upcoming years.
Visual assessment of vegetation outside of the monitoring plots indicates that the herbaceous vegetation
is well established throughout the project.
4 Methods
Stream cross-section monitoring was conducted using a Topcon Total Station. Three-dimensional
coordinates associated with cross-section data were collected in the field (NAD83 State Plane feet PIPS
3200). Morphological data were collected at 12 cross -sections. Survey data was imported into Microsoft
Excel® for processing and analysis. The stage recorders include an automatic pressure transducer set in
PVC piping in the channel. The elevation of the bed and top of bank at each stage recorder location was
recorded to be able to document presence of water in the channel and out of bank events. Visual
observations (i.e. wrack or debris lines) and traditional cork crest gauges will also be used to document
out of bank events.
Vegetation success is being monitored at a total of seven permanent vegetation plots. Vegetation plot
monitoring follows the CVS-EEP Level 2 Protocol for Recording Vegetation, version 4.2 (Lee et al. 2008)
and includes analysis of species composition and density of planted species. Data are processed using the
NCDMS ShinyApp tool. In the field, the four comers of each plot were permanently marked with PVC at
the origin and rebar at the other comers. Photos of each plot are to be taken from the origin each
monitoring year. Tree species and height will be recorded for each planted stem.
4

Appendix A:
Background Tables
Table 1: Project Mitigation Components
Table 2: Project Activity, Reporting History, and Contacts
Table 3: Project Information and Attributes

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Table 2: Project Timeline and Contacts
Activity or D-
Project Instituted
Data Collection OV
NA
Task Completion or
Deliverable
2/20/2018
Mitigation Plan Approved
NA
1/27/2020
Construction (Grading) Completed
NA
4/14/2021
Planting Completed
NA
4/15/2021
As -built Survey Completed
NA
6/15/2021
MY-0 Baseline Report
4/26/2021
6/23/2021
MY1 Monitoring Report
11/17/2021
12/2/2021
Remediation Items (e.g. beaver removal, supplements, repairs etc.)
Encroachment
Grassy Creek Tributaries
Designer
Mitigation Project
Water & Land Solutions, LLC
7721 Six Forks Rd, Ste. 130, Raleigh, NC 27615
Primary project design POC
Chris Tomsic- [phone]
Construction Contractor
North State Environmental, Inc
2889 Lowery Street, Winston-Salem, NC 27101
Construction contractor POC
Andy Harmon - [phone]
Survey Contractor
Ascension Land Surveying and Consulting
116 Williams Road, Mocksville, NC 27028
Survey contractor POC
Christopher Cole - [phone]
Planting Contractor
Ripple Ecosolutions, LLC
215 Moonridge Rd, Chapel Hill, NC 27516
Planting contractor POC
George Morris - [phone]
Seeding Contractor
North State Environmental, Inc
2889 Lowery Street, Winston-Salem, NC 27101
Contractor point of contact
Andy Harmon - [phone]
Seed Mix Sources
Green Resource
[phone]
Nursery Stock Suppliers (Bare Roots)
Native Forest Nursery
[phone]
Nursery Stock Suppliers (Bare Roots/plugs)
Mellow Marsh Farm
[phone]
Nursery Stock Suppliers (Live Stakes)
Foggy Mountain Nursery
[phone]
Monitoring Performers
Water & Land Solutions, LLC
7721 Six Forks Rd, Ste. 130, Raleigh, NC 27615
Stream Monitoring POC
I Emily Dunnigan- [phone]
Vegetation Monitoring POC
Emily Dunnigan- [phone]

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Appendix B:
Visual Assessment Data
Figure 1a - 1c: Current Condition Plan View (CCPV)
Cross -Section Photographs
Stream Station Photographs (Cross -Sections, Photo Stations, Ell Reaches)
Vegetation Plot Photographs
Additional Photographs

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Appendix C:
Vegetation Monitoring Plot
Data
Table 4: Red -line Plant List
Table 5a: Stem Counts and Densities Table
Table 5b: Vegetation Performance Standards Summary Table

Common Name Stems % Planted Mitigation
Plan %
Scientific Name
Fraxinus pensylvanica
Green Ash
300
4.23%
5%
Betula nigra
River Birch
650
9.15%
7%
Tilia americana
Basswood
350
4.93%
0%
Nyssa sylvatica
Black gum
400
5.63%
0%
Platanus occidentalis
Sycamore
650
9.15%
7%
Liriodendron tulipifera
Tulip poplar
650
9.15%
8%
Quercus rubra
Northern red oak
200
2.82%
0%
Quercus michauxii
Swamp chestnut oak
200
2.82%
0%
Quercus phellos
Willow oak
100
1.41%
5%
Quercus alba
White oak
400
5.63%
0%
Ch^ ;k
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Diospyros virginiana
Persimmon
450
6.34%
7%
Aronia arbutifolia
Red Chokeberry
250
3.52%
0%
Carpinus caroliniana
Ironwood
400
5.63%
6%
Hamamelis virginiana
Witch hazel
400
5.63%
6%
Asimina triloba
Pawpaw
500
7.04%
6%
Lindera benzoin
Spicebush
400
5.63%
6%
Alnus serrulata
Tag alader
400
5.63%
6%
Corylus americana
Hazelnut
400
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6%
8-99-%
5%
A4m n., 4o t4pet o
i Iw h II agRelma
.9
8-99-04
6%
Total
7,100
100.00%
* changes from mitigation plan in red
Total amount includes those planted prior to storm repairs and areas that were replanted
(3.43 ac) after storm repairs.
Riparian
(Proposed 2'-3' Spacing
Buffer Live Stake Plantings - Streambanks
@ Meander Bends and 6'-8' Spacing
@ Riffle
III
Sections
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Appendix D:
Stream Measurement and
Geomorphology Data
MY1 Cross -Sections
Table 6a: Baseline Stream Data Summary
Table 6b: Cross-section Morphology Data

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Table 7: Verification of Bankfull Events
Figure 2: Flow Gauge and Crest Gauge Installation Diagrams
Figure 3: Flow Gauge and Crest Gauge Graphs
Table 8: Monthly Rainfall Data

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'zT
0000 N Q00
n
O
M
n O 'T
00
N
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N
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ci
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\
ci
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m
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m
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ci
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N
ci
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ci
Rainfall
-Pool Depth
Riffle Depth
*FG-1: 209 days of cumulative flow, 0 days of no recorded flow
Grassy Creek Tributaries Flow Gauge FG-2 (R5)
1.5
Maximum
Days
of Consecutive
Flow:
237
days
(3/26/2021
- 11/17/2021)
End
MY1
4
No
Data
3.5
1.25
November
17th,
2021
3
1
a
a
2.5
_
C:
t
a 0.75
2
—
Z
c
o
0
1.5
�
a
0.5
0
1
0.25
0.5
0
��
LI
0
N
O
0
O
0
O
0
O
O
0
0
O
0
O
0rIj
O
0rI4
O
0rIj
O
0rI4
O
0rIj
O
0rI4 0rIj 0
O O O
O
0
0
O
0 0 0
O O O
N
O
N
O
N
O
N N
O O
N N
O O
N
N
N
N
N
N
N
N
N
N
N
N
N N N
N
N
N N N
N
N
N
N N
N N
ci
\
U'
c-I
0\1
N
N
-1
lOO
N
N
-1
lOO
N
O)
\
M
N
I,
\
-1
N
\
0000 N Q00
c-I \ -1
O
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-1
n O 'T
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00
\
N
N
U' O1
\ -1
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\
I, ci
-1 M
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\ \ \
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ci
\
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ci
ci ci
ci
ci
N N
ci ci
Rainfall
Pool Depth
Riffle Depth
*FG-2: 259 days of cumulative flow, 62 days of no recorded flow

Grassy Creek Tributaries Flow Gauge FG-3 (R6)
2
1.75
1.5
a 1.25
t
a 1
C)
0
°0 0.75
a
0.5
0.25
4
3.5
3
Ln
2.5
c
1
0.5
0
•.0
J LM
J _ ■ ■
AN
1■ 1
Ll
t ■
1 I II
0
N
O
N
O
N
O
N
O
N
O
N
O
N
O
N
O
N
O
N N
O O
N
O
N N
O O
N
O
N
O
N
O
N
O
N N
O O
N
O
N
O
N
O
N
O
N
O
N
O
N
O
N
N
N
N
N
N
N
N
N
N N
N
N N
N
N
N
N
N N
N
N
N
N
N
N
N
-1
U'
0\1
N
QOO
N
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0\1
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n -1
0000 N
n
lOO
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n
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00
N
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N
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ci
�--�
\
c-I
\
c-I
\
N
\
N
\
M
\
M
\
L! \
Lfl
QOO
\
l0
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I,
\
n
\
00
\
00
\ \
Ol Ol
O
ci
\
O
ci
\
ci
\
N
ci
\
N
ci
Rainfall
-Pool Depth
Riffle
Depth
*FG-3: 177 days
of cumulative
flow, 0 days
of no recorded flow
Grassy Creek Tributaries Crest Gauge CG-1 (R3)
2.5
2
4
3.5
3
1
0.5
0
1 .
. .■
J Lr.
J . ■ ■ JY
1■ 1
Ll M.
■ 1. 1 ■
wl
0
N
O
N
O
N
O
N
O
N
O
N
O
N
O
N
O
N
O
r140
O
O
0
0
O
0 0 0
O O O
0
O
r140
O
r140 r140 r140
O O O
r140
O
N
O
N
O
N
O
N
O
N
O
N
O
N
N
N
N
N
N
N
N
N
N
N
N
N N N
N
N
N N N
N
N
N
N
N
N
N
�--�
\
IM
-1
a)
N
N
-1
Q00
N
N
-1
Q00
N
O1
\
M
N
I,
\
-1
N
'T
\
0000 N Q00
-1 \ -1
O
M
M
ci
n O 'T
N -1 N
00
\
N
N
U'
\
O1
-1
M
\
I,
-1
ci
M
\
ci
\
ci
\
N
\
N
\
M
\
M
qzT
\
M
\
Lfl
l0
\ n \
l0 I,
\
n
\
00
\ \ \
00 O1 O1
O
c-I
\
O
ci
c-I
\
.- i
ci
N
c-I
\
N
ci
\
N
ci
Rainfall
Gauge Depth
Bankfull Depth
*CG-1: Two bankfull events (max. 0.63' on 9/21/2021)

10.00
9.00
8.00
7.00
7 6.00
v
U
U
�-_ 5.00
m
0
�° 4.00
m
w
3.00
z
2.00
1.00
0.00
Jan-21
Feb-21 Mar-21 Apr-21 May-21 Jun-21 Jul-21 Aug-21 Sep-21 Oct-21 Nov-21 Dec-21
Observed Monthly Rainfall -30th Percentile* -70th Percentile*
Oth and 70th percentile data collected from weather station Coop 315890 - Mount Airy, NC
Incomplete Month
Month
Jan-21
i
2.60
i
4.55
Observed
4.32
Feb-21
2.10
3.83
6.33
Mar-21
3.03
5.03
8.87
Apr-21
2.76
4.78
1.41
May-21
3.30
5.61
2.94
Jun-21
2.80
5.37
2.30
J u I-21
3.51
5.81
4.07
Aug-21
2.59
5.12
2.64
Sep-21
2.63
5.32
8.64
Oct-21
2.15
4.29
2.43
Nov-21
2.22
4.11
**
Dec-21
2.51
4.54
**

Appendix F: Correspondence
As -Built Site Visit Meeting Minutes

WATER & LAND
SOLUTIONS
Meeting Minutes
WLS Yadkin 01 Umbrella Mitigation Bank: Grassy Creek Tributaries Mitigation Project
USACE Action ID#: SAW-2017-02528
Subject: NCIRT Grassy Creek Tributaries As -Built Baseline Site Visit
Date Prepared: September 21", 2021
Meeting Date and Time: September 201", 2021, 10:30 am — 1:00 pm
Meeting Location: 36.319914,-80.463878 Pilot Mountain, NC
Recorded By: Emily Dunnigan
Attendees: USACE: Todd Tugwell, Steve Kichefski, and Casey Haywood
NCDEQ DWR: Erin Davis
WLS: Kayne VanStell, Cara Conder, Daniel Ingram, and Emily Dunnigan
These meeting minutes document notes and discussion points from the North Carolina Interagency
Review Team (NCIRT) As -Built Baseline Site Meeting for the Grassy Creek Tributaries Mitigation Project
(Yadkin River Basin, CU 03040101, Warm Water Thermal Regime). Water & Land Solutions, LLC (WLS)
submitted an As -Built Baseline Monitoring Report on June 23rd, 2021 (revised September 1", 2021) and
the site visit was held on September 201", 2021. The meeting began with a general summary of the
overall project construction and repair. These meeting minutes proceed in order of discussion.
1. Steve Kichefski requested an overview of activities on site. Cara Conder detailed initial project
construction, full monitoring installation, subsequent storm damage prior to as -built survey in May
2020, and redesign and repair of approximately 25% of the project. Kayne VanStell explained that there
were two significant storm events that resulted in close to three inches of rain over a short period of
time. Daniel Ingram explained if vegetation had a few more weeks to establish, storm damage would
have been far less. The repair was slow due to COVID and weather conditions and was finished in April
2021. All the monitoring devices were installed, and planting was completed prior to storm damage in
2020; however, WLS has reinstalled all monitoring devices for 2021.
2. Steve Kichefski asked if there were any changes to veg plot locations. Emily Dunnigan responded that
the veg plots were not moved significantly from original locations.
3. Steve Kichefski asked if fill was brought in to adjust side slopes. Kayne VanStell responded that no fill
was brought in.
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WATER & LAND
SOLUTIONS
4. Steve Kichefski asked if topsoil was lost because of the storms. Kayne VanStell responded that a few
inches may have been lost, but there is limited topsoil on this site in general.
5. Erin Davis asked if soil amendments were needed to establish trees and vegetation. Kayne VanStell
responded that Land Quality closed out the project and that ground cover was establishing nicely. WLS
will monitor the tree survival/success.
6. Todd Tugwell asked if there were any credit adjustments/losses because of the repairs. Cara Conder
responded there were some changes in credits and that the credit information was included in the
addendum and letter to Steve. Todd Tugwell stated WLS should use the redesign/repair plan lengths to
calculate credits vs. the as -built lengths. Cara Conder responded that the report the IRT currently has
calculates credits on the repair reaches using as -built length, and WLS will revise/resubmit with repair
plan lengths for R2 and R3.
7. Todd Tugwell asked what repairs were done on R3. Kayne VanStell responded that minor bank
adjustments were completed.
8. Steve Kichefski asked if tree species planted had changed from proposed and noted if there is a
significant difference (20% or more) to get IRT approval before planting future projects. WLS stated
changes in the species list was due to availability, and Steve stated the tree species substitutions on this
project were acceptable. He also asked if planting zones were used on the project, and Emily
Dunnigan/WLS said no due to size of wetlands. Erin Davis also suggested including an alternative
planting list in the mitigation plan for ease of substitutions if needed. In the future WLS will let the IRT
know of significant changes to plant lists.
9. Erin Davis commented to keep an eye on the edges of the easement for encroachment where the
landowner has fields and to further mark the easement if necessary. Emily Dunnigan responded that
WLS already plans on marking the easement more clearly in certain areas and will continue to monitor
the boundary.
10. Erin Davis asked if there were any existing wetlands on site. Kayne VanStell responded that there is a
toe of slope seep on the left floodplain of R3. WLS will update future CCPV maps to show the no credit
wetland areas.
11. Erin Davis was impressed by the herbaceous cover but suggested watching areas where it's dense to
ensure tree survival. Emily Dunnigan responded that areas of dense herbaceous cover would be
monitored closely.
12. R7: Erin Davis liked the gully repair along R7 with coir logs/matting and was happy to see WLS did not
use rock to stabilize the slope. Todd Tugwell asked if live stakes were used on R7 where the herbaceous
cover is dense. Kayne VanStell responded that they were used and pointed out various willow live
waterlandsolutions.com 1 7721 Six Forks Rd, Ste 130, Raleigh, NC 27615 1 919-614-5111

WATER & LAND
SOLUTIONS
stakes. Todd Tugwell asked if the side slopes along R7 were planted. Kanye VanStell responded that they
were planted.
13. Erin Davis asked WLS to provide photos prior to the growing season on R7 to see the stream more
clearly. She also suggested using random veg plots in areas of high herbaceous cover to document tree
survival/vigor. Emily Dunnigan stated that pre -growing season photos will be provided in MY2 and WLS
will complete random veg plots when needed.
14.Todd Tugwell stated vegetation along the left floodplain of R2 was struggling, likely due to poor soil
conditions. No remedial action is needed at this time.
15. Steve Kichefski asked if invasive treatments are included in the park project plans. Kayne VanStell
responded yes.
16. Todd Tugwell asked what the restoration approach was on R1. Kayne VanStell responded that it was
PI restoration with step pools.
17. Erin Davis liked the addition of the lower BMP on R1. Todd Tugwell asked if the BMP was designed to
be open water and that he would prefer it to be vegetated. Kayne VanStell answered that the BMP will
likely fill with sediment over time and vegetate with volunteers.
18. Todd Tugwell suggested keeping a close watch on vegetation in manipulated areas. Erin Davis stated
that supplemental planting may be needed and random veg plots, but no actions at this time. Steve
Kichefski suggested watching the bare areas and provide photos in reports to document changes in veg
cover. Emily Dunnigan responded that WLS will monitor the vegetation and provide the requested
photographs in monitoring reports.
19.Todd Tugwell asked if silt fence was used and removed from the project. Kayne VanStell responded
that it was used and removed after ground cover was established.
20. Erin Davis stated that data collection in shaded areas is lacking, and on future projects if planting is
done in these areas to include veg plots to document species and success.
waterlandsolutions.com 1 7721 Six Forks Rd, Ste 130, Raleigh, NC 27615 1 919-614-5111