20210106 Ver 1_Exhibit I Updated Monitoring Plan 12-8-2021_20211208

Exhibit I
9. PERFORMANCE STANDARDS
The performance standards for the Site follow guidance from the NC IRT's October 2016 Stream and
Wetland Compensatory Mitigation Update. Performance standards will be evaluated throughout the
seven-year post -construction monitoring and described in the annual monitoring reports.
9.1 Streams
The stream performance standards for the project site will follow approved performance standards
presented in the NC IRT Wilmington District Stream and Wetland Compensatory Mitigation Update
(10/24/2016). Annual monitoring and semi-annual site visits will be conducted to assess the condition of
the finished project. Specific performance standard components are proposed for stream morphology,
hydrology, and vegetation. Performance standards will be evaluated throughout the seven-year post -
construction monitoring.
9.1.1 Dimension
Riffle cross -sections on the restoration reaches should be stable and should show little change in
bankfull area, maximum depth ratio, and width -to -depth ratio. Per NC IRT guidance, bank height ratios
shall not exceed 1.2 and entrenchment ratios shall be greater than 1.4 for restored B channels and 2.2
for restored E/C channels to be considered stable. All riffle cross sections should fall within the
parameters defined for channels of the appropriate stream type. If any changes do occur, these changes
will be evaluated to assess whether the system is showing signs of instability. Indicators of instability
include a vertically incising thalweg or eroding banks. Changes in the channel that indicate a movement
toward stability or enhanced habitat include a decrease in the width -to -depth ratio in meandering
channels or an increase in pool depth. Remedial action will not be taken if channel changes indicate a
trend toward stability.
9.1.2 Pattern and Profile
Visual assessments and photo documentation should indicate that streams are remaining stable and do
not indicate a trend toward systematic instability. Signs of instability may include bank scour, bank
migration, and bed incision.
9.1.3 Substrate
Restoration reaches should show maintenance of coarser materials in the riffle features and smaller
particles in the pool features. A reach -wide pebble count will be performed in each restoration reach
each monitoring year for classification purposes. A pebble count will be performed at each surveyed
riffle to characterize the pavement during the baseline monitoring only.
9.1.4 Photo Documentation
Photographs should illustrate the Site's vegetation and morphological stability on an annual basis. Cross-
section photos should demonstrate no excessive erosion or degradation of the banks. Longitudinal
photos should indicate the absence of persistent of mid -channel bars or vertical incision. Grade control
structures should remain stable. Deposition of sediment on the bank side of vane arms is preferable.
Maintenance of scour pools on the channel side of vane arms is expected.
9.1.5 Bankfull Events

The occurrence of bankfull events will be documented throughout the monitoring period. Four bankfull
flow events must be documented within the seven-year monitoring period. The four bankfull events
must occur in separate years. Bankfull events will be documented using photographs and either a crest
gage or a pressure transducer, as appropriate for Site conditions. The selected measurement device will
be installed in the stream within a surveyed riffle cross section. The device will be checked at each site
visit to determine if a bankfull event has occurred. Photographs will also be used to document the
occurrence of debris lines and sediment deposition.
9.2 Vegetation
The final vegetative success criteria will be the survival of 210 planted stems per acre in the riparian
corridors at the end of the required monitoring period (MY7). The interim measure of vegetative success
for the site will be the survival of at least 320 native species stems per acre at the end of the third
monitoring year (MY3) and at least 260 stems per acre at the end of the fifth year of monitoring (MY5).
Planted vegetation must average 7 feet in height in each plot at the end of MY5 and 10 feet in height at
Year 7. The extent of invasive species coverage will also be monitored and controlled as necessary
throughout the required monitoring period. Vegetation monitoring quadrants will be installed across
the Site to measure the survival of the planted trees. The number of monitoring quadrants required, and
frequency of monitoring will be based on the DMS monitoring guidance documents. Vegetation
monitoring will occur between July 1st and leaf drop and will follow the CVS-EEP Protocol for Recording
Vegetation (2008).
9.3 Visual Assessments
Visual assessments should support the specific performance standards described above
10. MONITORING PLAN
The Site Monitoring Plan has been developed to ensure that the required performance standards are
met, and project goals and objectives are achieved. Annual monitoring data will be reported using the
DMS Annual Monitoring Reporting Template (June 2017). The monitoring report shall provide project
data chronology that will facilitate an understanding of project status and assist in close-out decision
making. Using the DMS As -Built Baseline Monitoring Report Template (June 2017), a baseline
monitoring document and as -built record drawings of the project will be developed following the
planting and monitoring materials installation at the Site. Monitoring reports will be prepared in the fall
of each monitoring year and submitted by December 31. These reports will be based on the DMS Annual
Monitoring Template (June 2017) and Closeout Report Template (June 2017). Full monitoring reports
will be submitted in monitoring years 1, 2, 3, 5, and 7. Abbreviated monitoring reports will be submitted
in monitoring years 4 and 6. The closeout monitoring period will extend seven years beyond completion
of construction.
10.1 Mitigation Monitoring Components
Project monitoring components are listed in more detail in Table 10.1. Approximate locations of the
proposed monitoring components are shown in Error! Reference source not found..

Table 10.1: Mitigation Monitoring Plan
Goal
Treatment
Performance Standard
Monitoring
Metric
Expected
Outcomes
Likely Functional Uplift
Improve
stream
channel
stability.
Construct stream
channels with appropriate
bankfull channel
dimensions, planform
geometry and profile such
that channel maintenance
and adjustments are
representative of other
natural systems.
Stream profile and pattern must
remain stable. See "Streams
9.1".
Cross-section
monitoring and
visual
assessment.
Stable channels
with BHR less
than 1.2.
Decrease sediment
inputs from channel
and bank erosion.
Efficiently transport
sediment leads and
stream flow.
Improve
instream
habitat.
Install habitat features
and structures, add LWD,
increase bedform
diversity, improve in-
stream water quality.
There is no required
performance standard for this
metric.
Visual
assessment.
Visual
assessment
should report an
overall increase
in habitat
complexity
within the
stream systems.
Increase in available
habitat for
macroinvertebrates
and fish leading to an
increase in
biodiversity.
Restore
native
riparian
vegetation.
Plant native tree,
understory and grass
species in riparian zones,
preambank
stand wetland
areas.
In planted open areas the
survival of 210 planted stems
per acre at MY7. Interim
survival of at least 320 planted
stems at MY3 and at least 260
planted stems per acre at MY5.
Additionally, trees in each plot
must average 7 feet in height by
MY5 and 10 feet by MY7. No
success criteria is associated
with shaded area planting.
Permanent and
mobile 100 m2
vegetation plots
will be placed on
2% of the planted
area. Shaded
areas will be
visually assessed.
Planted stem
densities will be
at or above 210
planted stems
per acre at MY7,
with volunteer
trees also
growing onsite.
Reduce sediment
inputs from bank
erosion. Increase
nutrient processing,
uptake and storage
within the floodplain.
Create riparian
habitats. Add a source
of LWD and organic
material to stream.

Exclude
quarry
activity from
the Site.
Establish a conservation
easement on the Site.
Record and close conservation
easement prior to
implementation.
Visual
assessment
Site remains
protected by
conservation
easement in
perpetuity.
Protection of the Site
from encroachment
into the conservation
easement and direct
impact to stream.
Supports all functions.
Permanently
protect site
resources
from local
disturbance
and other
uses.
Establish and record
conservation easement
on the Site. Install in
livestock exclusion
fencing.
Prevent easement
encroachment.
Site and
easement
boundary visually
inspected
annually for
encroachment.
No detrimental
impacts to the
conservation
easement, site
streams,
wetlands or
riparian buffer.
Hydrology (reach
scale),
Hydraulic,
Geomorphology,
Physicochemical,
Biology

Table 10.2: Mitigation Monitoring Components
Monitoring Parameter
Monitoring Method
Quantity per Feature
Frequency
Notes
Stream
A
Above
Culvert
Stream
A
Below
Culvert
Stream
C
Stream
D
Wetland
Culvert
Inlet and
Outlet
Dimension
Riffle XS
2
3
1
1
N/A
N/A
Annual
1
Pool XS
2
2
1
1
Pattern
Field Survey
N/A
N/A
N/A
N/A
N/A
N/A
N/A
2
Longitudinal Profile
Field Survey
N/A
N/A
N/A
N/A
N/A
N/A
Annual
2
Substrate
Reach Wide (RW),
Wetted Perimeter
(WP) pebble count
1 WP'
N/A
1 WP'
N/A
N/A
N/A
Annual
3
Hydrology
Crest Gauges
1
1
N/A
N/A
N/A
N/A
Continuous
4
Vegetation
CSV Level 2 / Mobile
Plots
14, (10 Permanent, 4 Mobile)
N/A
N/A
Annual
5
Visual Assessment
Yes
Yes
Yes
Yes
Yes
Yes
Semi -
Annual
Invasive Vegetation
Annual
6
Easement Boundary
Semi-
Annual
7
Reference Station
Photos
Photographs
4 5
2
2
N/A
2
Annual
8
1. Cross -sections will be permanently marked with rebar to establish location. Surveys will include points measured at all breaks in slope,
including top of bank, bankfull, edge of water, and thalweg

2. Pattern and profile will be assessed visually during semi-annual site visits. Longitudinal profile will be collected during as -built baseline
monitoring survey only, unless observations indicate widespread lack of vertical stability (greater than 10% of reach is affected) and profile
survey is warranted in additional years to monitor adjustments or survey repair work.
3. Riffle 100-count substrate sampling will be collected during the baseline monitoring only. Substrate assessments in subsequent monitoring
years will consist of reachwide substrate monitoring.
4. Crest Gauges will be inspected monthly, evidence of bankfull events will be documented with a photo when possible. Transducers will be set
to record stage once every two hours. Devices will be inspected and downloaded semi-annually.
5. Both mobile and permanent vegetation plots will be utilized to evaluate the vegetation performance for the open areas planted. 2% of the
open planted acreage will be monitored with permanent plots and mobile plots. Permanent vegetation monitoring plot assessments will
follow CVS Level 2 protocols. Mobile vegetation monitoring plot assessments will document number of planted stems and species using a
circular or 100 m2 square/rectangular plot. Planted shaded areas will be visually assessed.
6. Locations of invasive vegetation will be mapped and submitted with the annual monitoring report.
7. Locations of fence damage, vegetation damage, boundary encroachments, etc. will be mapped and submitted with the annual monitoring
report.
8. Photographs will be taken at each Cross -Section during Annual Monitoring. Photographs will also be taken of Inlet and Outlet of New
Culvert Crossing annually.