HomeMy WebLinkAbout20160385 Ver 2_Year 3 Monitoring Report_2020_20201231Monitoring Report — MY3
FINAL VERSION
Lake Wendell Mitigation Project
Calendar Year of Data Collection: 2020
NCDEQ DIMS Project Identification # 97081
NCDEQ DIMS Contract # 6826
Neuse River Basin (Cataloging Unit 03020201)
USACE Action ID Number: SAW-2016-00876
NCDEQ DWR Project # 2016-0385
Johnston County, NC
Contracted Under RFP # 16-006477
Data Collection Period: September -October 2020
Submission Date: December 11, 2020
Prepared for:
Environmental
Quality
North Carolina Department of Environmental Quality
Division of Mitigation Services
1652 Mail Service Center
Raleigh, NC 27699-1652
Prepared by:
WATER & LAND SOLUTIONS
7721 SIX FORKS ROAD, SUITE 130, RALEIGH, NC 27615
(919i 614 - 5111 1 waterlandsolutions.com
WATER & LAND SOLUTIONS
7721 SIX FORKS ROAD, SUITE 130, RALEIGH, NC 27615
(919) 614 - 5111 I waterlandsolutions.com
December 11, 2020
INC Department of Environmental Quality
Division of Mitigation Services
Attn: Lindsay Crocker
217 West Jones Street, Suite 3000-A
Raleigh, INC 27603
RE: WLS Responses to NCDEQ DMS Review Comments for Task 9 Draft Monitoring Report Year 3 for the Lake
Wendell Mitigation Project, NCDEQ DMS Full -Delivery Project ID #97081, Contract #6826, Neuse River Basin,
Cataloging Unit 03020201, Johnston County, INC
Dear Ms. Crocker:
Water & Land Solutions, LLC (WLS) is pleased to present the Final Monitoring Report Year 3 for the Lake Wendell
Mitigation Project to the North Carolina Department of Environmental Quality (NCDEQ) Division of Mitigation
Services (DMS). The Final Monitoring Report Year 3 were developed by addressing NCDEQ DMS's review comments.
Under this cover, we are providing the Final Monitoring Report Year 3, and the required digital data for each (the .pdf
copies of the entire updated reports and the updated digital data) via electronic delivery. We are providing our
written responses to NCDEQ DMS's review comments on the Draft Monitoring Report Year 3 below. Each of the
DMS review comments is copied below in bold text, followed by the appropriate response from WLS in regular text:
1. DMS Comment: The project states that all metrics met success, but one of the cross -sections and
vegetation plots do not (in summary and monitoring results section). Revise to remove statement or
add explanation for metrics not meeting. Also, this should not be shown as meeting on CCPV. It may
be beneficial to point out that it is only missing one stem, and that the visual did not show any areas of
concern. Additionally, it may be helpful to point out that due to the small starting size of the channel,
the 20% change may not be relevant. It is also worth noting that there is a lower resolution of points
taken in MYO from other years which may be attributable to the differences. WLS Response: WLS has
updated section 5 of the report to clarify the metrics which are not meeting success criteria. Section 5.2
(Stream Horizontal & Vertical Stability) and section 5.5 (Vegetation) were updated with additional
language and explanation of the one cross section and one vegetation plot that do not meet success
criteria. The CCPV has been updated to show that Veg Plot 2 is not meeting success criteria.
2. DMS Comment: Update rain report for October and November if possible. WLS Response: WLS updated
Figure 5 with the October and November rain total.
3. DMS Comment: Confirm that the stream photos taken 3/2020 are still relevant for all streams in MY3.
WLS Response: All stream photos taken in March 2020 are still relevant for all locations in MY3. Photos
were taken during the spring visual survey visit prior to the growing season.
Digital Deliverables:
1. DMS Comment: Please include the visual assessment photos as JPEGS rather than a single PDF. WLS
Response: JPEGS of all photos are now included in the a -data.
2. DMS Comment: Assign unique ID's to the photo station spatial features and resubmit these features,
ensuring that these ID's match the photo station ID's provided in the Monitoring Report. WLS Response:
The GIS shapefile containing the photo stations has been updated to include the unique ID in the attribute
table. The unique ID is also shown in appendix B on each photo.
3. DMS Comment: Include the shapefile for the kudzu area displayed in Fig. 1. WLS Response: The kudzu
shapefile is now included in the a -data.
Please contact me if you have any questions or comments.
Sincerely,
Water & Land Solutions, LLC
Catherine Manner
Water & Land Solutions, LLC
7721 Six Forks Road, Suite 130
Raleigh, NC 27615
Office Phone: (919) 614-5111
Mobile Phone: (571) 643-3165
Email: catherine@waterlandsolutions.com
Table of Contents
1 Project Summary........................................................................................................................................ 1
2
Project Background...........................................................................................................................
1
2.1
Project Location, Setting, and Existing Conditions........................................................................ 1
2.2
Mitigation Project Goals and Objectives.......................................................................................2
2.3
Project History, Contacts, and Timeframe.................................................................................... 3
3
Project Mitigation Components........................................................................................................
3
3.1
Stream Mitigation Types and Approaches....................................................................................
3
3.1.1
R1 Restoration...........................................................................................................................
3
3.1.2
R2 Restoration...........................................................................................................................4
3.1.3
R3 Restoration...........................................................................................................................4
3.1.4
R4 Preservation and Enhancement...........................................................................................4
3.1.5
R5 Restoration and Enhancement............................................................................................4
4
Performance Standards....................................................................................................................
5
4.1
Streams.........................................................................................................................................
6
4.1.1
Stream Hydrology.....................................................................................................................
6
4.1.2
Stream Profiles, Vertical Stability, and Floodplain Access
........................................................6
4.1.3
Stream Horizontal Stability.......................................................................................................6
4.1.4
Streambed Material Condition and Stability............................................................................6
4.1.5
Jurisdictional Stream Flow........................................................................................................6
4.2
Vegetation.....................................................................................................................................6
5
Monitoring Year 3 Assessment and Results......................................................................................7
5.1
Stream Hydrology.........................................................................................................................
7
5.2
Stream Horizontal & Vertical Stability..........................................................................................
7
5.3
Streambed Material Condition and Stability................................................................................8
5.4
Jurisdictional Stream Flow Documentation..................................................................................8
5.5
Vegetation.....................................................................................................................................8
5.6
Wetlands.......................................................................................................................................
9
References..................................................................................................................................................
10
LIST OF APPENDICES
Appendix A Background Tables and Figures
Table 1
Project Mitigation Components
Table 2
Project Activity and Reporting History
Table 3
Project Contacts
Table 4
Project Information and Attributes
Appendix B Visual Assessment Data
Figure 1
Current Condition Plan View (CCPV)
Table 5
Visual Stream Morphology Stability Assessment
Table 5a
Vegetation Condition Assessment
Photos
Stream Station Photographs
Photos
Vegetation Plot Photographs
Appendix C
Vegetation Plot Data
Table 6
Planted and Total Stem Counts
Appendix D Stream Measurement and Geomorphology Data
Figure 2
MY3 Cross -Sections
Figure 3
Pebble Count
Table 7a
Baseline Stream Data Summary
Table 7b
Cross-section Morphology Data
Table 7c
Stream Reach Morphology Data
Appendix E
Hydrologic Data
Table 8
Verification of Flow Events
Figure 4a
Surface Flow Data
Figure 4b
Groundwater Gauge Data
Figure 5
Rainfall Data
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1 Project Summary
Water and Land Solutions, LLC (WLS) completed the construction and planting of the Lake Wendell
Mitigation Project (Project) full -delivery project for the North Carolina Department of Environmental
Quality (NCDEQ), Division of Mitigation Services (DMS) in March 2018. The Project is located in Johnston
County, North Carolina between the Community of Archer Lodge and the Town of Wendell at 35.73739',
-78.3538°. The Project site is located in the NCDEQ Sub -basin 03-04-06, in the Upper Buffalo Creek Sub -
watershed 030202011502.
The Project involved the restoration, enhancement, preservation, and permanent protection of five
stream reaches (R1, R2, R3, R4, and R5) and their riparian buffers, totaling 4,269 linear feet of streams
and 490,477 square feet of riparian buffers (see buffer summary table below). WLS staff visited the site
several times throughout 2020. Monitoring Year 3 (MY3) data collection occurred in September and
October of 2020 (Table 2). This report presents the data for MY3. The Project meets the MY3 success
criteria for stream hydrology, streambed condition and stability, and stream flow. For stream horizontal
and vertical stability, one cross section is not meeting requirements. One vegetation plot is not meeting
success requirements for vegetation. Based on these results, the Project is expected to meet the
Monitoring Year 4 (MY4) success criteria in 2021.
2 Project Background
2.1 Project Location, Setting, and Existing Conditions
The Project site is located in the Upper Buffalo Creek Sub -watershed 030202011502 study area of the
Neuse 01 Regional Watershed Plan, in the Wake -Johnston Collaborative Local Watershed Plan, and in
Targeted Local Watershed 03020201180050.
The project includes five stream reaches (R1, R2, R3, R4, and R5) which consisted of restoration,
enhancement, preservation, and permanent protection of 4,269 linear feet of streams and 490,477 square
feet of riparian buffers. The catchment area is 102 acres and has an impervious cover less than one
percent. The dominant surrounding land uses are agriculture and mixed forest. Prior to construction,
livestock had access to all Project streams, except R4, and the riparian buffers were less than 50 feet wide.
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2.2 Mitigation Project Goals and Objectives
WLS established project mitigation goals and objectives based on the resource condition and functional
capacity of the watershed to improve and protect diverse aquatic resources comparable to stable
headwater stream systems within the Piedmont Physiographic Province. The proposed mitigation types
and design approaches described in the final approved mitigation plan considered the general restoration
and resource protection goals and strategies outlined in the 2010 Neuse River Basin Restoration Priority
Plan (RBRP). The functional goals and objectives were further defined in the 2013 Wake -Johnston
Collaborative Local Watershed Plan and 2015 Neuse 01 Regional Watershed Plan and include:
• Reducing sediment and nutrient inputs to the upper Buffalo Creek Watershed,
• Restoring, preserving, and protecting wetlands, streams, riparian buffers, and aquatic habitat,
• Implementing agricultural BMPs and stream restoration in rural catchments together as "project
clusters".
The following site -specific goals were developed to address the primary concerns outlined in the LWP and
RWP and include:
Improve Base Flow
Remove man-made pond dam and restore a
more natural flow regime and aquatic passage.
Reconnect Floodplain / Increase
Lower BHRs from >2.0 to 1.0-1.2 and maintain
Floodprone Area Widths
ERs at 2.2 or greater.
Improve Bedform Diversity
Increase riffle/pool percentage to 70/30 and
pool -to -pool spacing ratio 4-7X bankfull width.
Reduce BEHI/NBS streambank erosion rates
Increase Lateral Stability
comparable to downstream reference
condition and stable cross-section values.
Plant native species vegetation a minimum 50'
Establish Riparian Buffer Vegetation
wide from the top of the streambanks with a
composition/density comparable to
downstream reference condition.
Improve Water Quality
Remove cattle from riparian corridor and
reduce fecal coliform bacteria levels.
Improve Macroinvertebrate
Incorporate native woody debris into channel
Community and Aquatic Species
and change DWR bioclassification rating from
Health
`Poor' to a minimum `Fair' by Monitoring Year
7.
To accomplish these site -specific goals, the following objectives will be measured and included with the
performance standards to document overall project success:
• Provide a floodplain connection to incised stream with BHRs that range from 1.0 — 1.2 and ERs
greater than 2.2 by removing a man-made pond, thereby promoting more natural flood flows,
• Improve bedform diversity by increasing scour pool spacing/depth variability every 4X-7X bankfull
channel widths,
• Increase benthic macroinvertebrate habitat value by changing the DWR bioclassification rating
from 'Poor' to 'Fair' after monitoring year 7,
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• Reduce sediment loading from accelerated streambank erosion rates by decreasing BEHI/NBS
values to `Low' and constructing Radius of Curvature Ratios (Rc) to 2X-3X bankfull channel widths,
• Improve pre -restoration water quality parameters by increasing dissolved oxygen concentrations
(DO), such that it meets a functioning level after monitoring year 7,
• Increase native species riparian buffer vegetation density/composition along streambank and
floodplain areas that meet requirements of a minimum 50-foot-wide and 210 stems/acre after
monitoring year 7,
• Improve aquatic habitat and fish movement through pond dam removal and the addition of in -
stream cover and native woody debris by increasing the existing biotic index to a higher
functioning level,
• Prevent cattle from accessing the conservation easement boundary by installing permanent
fencing and reducing fecal coliform bacteria from the pre -restoration levels.
2.3 Project History, Contacts, and Timeframe
The chronology of the project history and activity is presented in Table 2. Relevant project contact
information is presented in Table 3. Relevant project background information is presented in Table 4.
3 Project Mitigation Components
Refer to Figure 1 and Table 1 for the project components/asset information. A recorded conservation
easement consisting of 11.97 acres protects and preserves all stream reaches, existing wetland areas, and
riparian buffers in perpetuity.
3.1 Stream Mitigation Types and Approaches
Stream restoration practices involved raising the existing streambed and reconnecting the stream to the
relic floodplain and constructing a channel through a drained farm pond (Reach R3). Some portions of the
existing degraded channels that were abandoned within the restoration areas were filled to decrease
surface and subsurface drainage and raise the local water table. The project also included restoring,
enhancing, and protecting riparian buffers and riparian wetlands within the conservation easement. The
permanent fencing system consisting of woven wire fencing was installed to NRCS technical standards in
the pasture areas along and outside of the northern conservation easement boundaries of Reaches R1,
R2, and R3. The vegetative components of this project included stream bank, floodplain, and transitional
upland zones planting. The Site was planted with native species riparian buffer vegetation and now
protected through a permanent conservation easement. Table 1 and Figure 1 (Appendix A) provide a
summary of the project components.
3.1.1 R1 Restoration
Due to the past manipulation and degraded nature of R1, a combination of Priority Level 1/11 Restoration
approaches were implemented along entire reach. A buried concrete pipe system was removed, and the
stream channel was daylighted for approximately 200 feet to restore a more natural flow path and
hydrologic function. Downstream of a culvert crossing installation, a new meandering channel was
constructed, and remnant spoil piles were removed from the floodplain. In -stream structures, including
log vanes, log and rock riffles, log steps and log weirs, were installed to provide control grade as well as
dissipate flow energy, protect streambanks, and eliminate potential for future incision.
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3.1.2 R2 Restoration
Restoration work along R2 involved a Priority Level I Restoration approach by raising the bed elevation
and reconnecting the stream with its abandoned floodplain. This approach promoted the restoration of a
stable channel form with appropriate bedform diversity, as well as improved biological functions through
increased aquatic and terrestrial habitats. Proposed in -stream structures included constructed wood and
stone riffles for grade control and habitat, log j-hook vanes, and log weirs/jams for encouraging step -pool
formation energy dissipation, bank stability, and bedform diversity. A few mature trees were protected
during construction and incorporated into the design. Bioengineering techniques such as vegetated
geolifts, brush layers, and live stakes were used to protect streambanks and establish woody vegetation
growth.
3.1.3 R3 Restoration
R3 restoration activities began immediately downstream from R2. In this area, a man-made farm pond
was drained to reconnect the new stream channel with its geomorphic floodplain. Channel and floodplain
excavation in this reach segment included the removal of shallow legacy sediments (approx. 12" depth)
to accommodate a new bankfull channel and in -stream structures, as well as a more natural step -pool
morphology using grade control structures in the steeper transitional areas. Shallow floodplain
depressions and vernal pools were created in the floodplain to provide habitat diversity, nutrient cycling,
and improved treatment of overland flows. The existing drain -pipe under the dam was removed and a
new culverted pipe crossing was installed at a lower elevation to allow for aquatic passage while blending
with the natural valley topography.
3.1.4 R4 Preservation and Enhancement
R4 began immediately downstream from the new culverted crossing at R3. Preservation was proposed
along much of this reach since the existing stream and wetland system is mostly stable with a mature
riparian buffer due to minimal historic impacts. This approach will extend the wildlife corridor from the
boundary of Lake Wendell throughout the entire riparian valley, while providing a hydrologic connection
and critical habitat linkage within the catchment area. Enhancement Level II work was conducted along
a short portion of this reach to address the bank erosion and lateral instability that occurred during
Hurricane Matthew (October 10, 2016). Construction activities consisted of mechanized removal of the
downed trees and resetting the remaining live root balls along the streambank, and re -grading the stream
bank back to a stable dimension, installing erosion control matting, and supplemental riparian buffer
planting and live stakes.
3.1.5 R5 Restoration and Enhancement
A Priority Level 1/11 Restoration approach was for the upstream portion of the reach to improve stream
functions and water quality. The existing concrete pipe system was completely removed to allow for the
complete daylighting and raising of the stream bed elevation to reconnect the stream with its active
floodplain. The reach was restored using appropriate riffle -pool and step -pool morphology with limited
meander geometry. In -stream structures, including log weirs and woody and stone riffles will be used to
control grade, as well as dissipate flow energy, protect streambanks, and eliminate potential for future
incision. Restored streambanks will be graded to stable side slopes and the floodplain will be reconnected
to further promote stability and hydrological function. Work along the downstream portion of R5 involved
Enhancement Level 11 practices to improve the current channel condition and aquatic function.
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4 Performance Standards
The applied success criteria for the Project will follow necessary performance standards and monitoring
protocols presented in final approved mitigation plan. Annual monitoring and semi-annual site visits will
be conducted to assess the condition of the project throughout the monitoring period. Monitoring
activities will be conducted for a period of seven years with the final duration dependent upon
performance trends toward achieving project goals and objectives. Specific success criteria components
and evaluation methods are described in the table below.
Improve Base Flow
Pressure transducer,
Create a more natural and
Duration and Overbank
regional curve,
Maintain seasonal flow for a
higher functioning
Flows (i.e. channel
regression equations,
minimum of 30 consecutive days
headwater flow regime
forming discharge)
catchment assessment
during normal annual rainfall.
and provide aquatic
passage.
TMaintain
average BHRs at 1.2 and
Provide temporary water
Reconnect Floodplain /
Bank Height Ratio,
ERs at 2.2 or greater and
storage and reduce
Increase Floodprone
Entrenchment Ratio,
document out of bank and/or
erosive forces (shear
Area Widths
crest gauge
geomorphically significant flow
stress) in channel during
events.
larger flow events.
Pool to Pool spacing,
Increase riffle/pool percentage
Provide a more natural
Improve Bedform
riffle -pool sequence,
and pool -to -pool spacing ratios
stream morphology,
Diversity
pool max depth ratio,
compared to reference reach
energy dissipation and
Longitudinal Profile
conditions.
aquatic habitat/refugia.
BEHI / NBS, Cross-
Decrease streambank erosion
Reduce sedimentation,
Increase Vertical and
sections andLongitudinal Profile
rates comparable to reference
excessive aggradation, and
Lateral Stability
Surveys, visual
condition cross-section, pattern
embeddedness to allow
and vertical profile values.
for interstitial flow habitat.
assessment
Within planted portions of the
CVS Level I & II Protocol
site, a minimum of 320 stems per
Increase woody and
Tree Veg Plots (Strata
acre must be present at year
herbaceous vegetation will
Establish Riparian
Composition and
three; a minimum of 260 stems
provide channel stability
Buffer Vegetation
Density), visual
per acre must be present at year
and reduce streambank
five; and a minimum of 210 stems
erosion, runoff rates and
assessment
per acre must be present at year
exotic species vegetation.
seven.
Removal of excess
nutrients, FC bacteria, and
Improve Water Quality
N/A
organic pollutants will
increase the hyporheic
exchange and dissolved
oxygen (DO) levels.
Increase leaf litter and
Improve Benthic
DWR Small Stream/
organic matter critical to
Macroinvertebrate
Qual v4 sampling, IBI
N/A
provide in -stream
Communities and
(MY3, MYS, MY7)
cover/shade, wood
Aquatic Health
recruitment, and carbon
sourcing.
Note: Level 4 and 5 project parameters and monitoring activities will not be tied to performance standards nor
required to demonstrate success for credit release.
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4.1 Streams
4.1.1 Stream Hydrology
Two separate bankfull events must be documented within the seven-year monitoring period. These two
bankfull events must occur in separate years. Otherwise, the stream monitoring will continue until two
bankfull events have been documented in separate years. In addition to the two bankfull flow events, two
geomorphically significant flow events (Clg,=0.66Q2) must also be documented during the monitoring
period. There are no temporal requirements regarding the distribution of the geomorphically significant
flows.
4.1.2 Stream Profiles, Vertical Stability, and Floodplain Access
Stream profiles, as a measure of vertical stability will be evaluated by looking at Bank Height Ratios (BHR).
The BHR shall not exceed 1.2 along the restored project reaches. This standard only applies to the restored
project reaches where BHRs were corrected through design and construction. In addition, observed
bedforms should be consistent with those observed for channels of the design stream type(s).
4.1.3 Stream Horizontal Stability
Cross -sections will be used to evaluate horizontal stream stability. There should be little change expected
in 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.
4.1.4 Streambed Material Condition and Stability
After construction, there should be minimal change in the particle size distribution of the streambed
materials, over time, given the current watershed conditions and future sediment supply regime. Since the
streams are predominantly sand -bed systems with minimal fine/coarse gravel, some coarsening is
anticipated after restoration activities, however significant changes in particle size distribution are not
expected. Streambed material condition is supplementary and is not part of success criteria.
4.1.5 Jurisdictional Stream Flow
The restored stream systems must be classified as at least intermittent, and therefore must exhibit base
flow with at least 30 days of continuous flow during a year with normal rainfall conditions as described in
the approved mitigation plan.
4.2 Vegetation
Vegetative restoration success for the project during the intermediate monitoring years will be based on
the survival of at least 320, three -year -old planted trees per acre at the end of Year 3 of the monitoring
period and at least 260, five -year -old, planted trees per acre at the end of Year 5 of the monitoring period.
The final vegetative restoration success criteria will be achieving a density of not less than 210, seven-
year -old planted stems per acre in Year 7 of monitoring. Planted vegetation (for projects in coastal plain
and piedmont counties) must average seven feet in height at Year 5 of monitoring and 10 feet in height
at Year 7 of monitoring. Volunteer species will be counted toward success if they are at least 12" tall,
surviving for at least two years, and if they are species found on the approved planting list. For all of the
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monitoring years (Year 1 through Year 7), the number of Red maple (Acer rubrum) stems cannot exceed
20 percent of the total stems in any of the vegetation monitoring plots.
5 Monitoring Year 3 Assessment and Results
Annual monitoring was conducted during MY3 in accordance with the monitoring plan as described in the
approved mitigation plan to document the site conditions. All monitoring device locations are depicted
on the CCPV (Figure 1). MY3 results are provided in the appendices. The Project meets the MY3 success
criteria for stream hydrology and jurisdictional stream flow. For stream horizontal and vertical stability,
all cross sections except XS-1 meet criteria. All vegetation plots except plot 2 meet the required success
criteria.
5.1 Stream Hydrology
Monitoring to document the occurrence of the bankfull events (overbank flows) and geomorphically
significant flow events (01g5=0.66Q2) within the monitoring period, along with floodplain access by flood
flows, is being conducted using a crest gauge installed near the downstream end of Reach R2 (Figure 1),
to record the watermark associated with the highest flood stage between monitoring site visits.
Photographs are also being used to document the occurrence of debris lines and sediment deposition on
the floodplain during monitoring site visits. Two recorded bankfull events occurred during MY3. These
events were documented using the described crest gauge and photography (Table 8). Documented flow
events in MY1 and MY2 satisfied the requirement of the occurrence of two bankfull events in separate
years. See the table below for a summary of bankfull events documented in all monitoring years.
5.2 Stream Horizontal & Vertical Stability
Visual assessment was utilized for assessment of MY3 horizontal and vertical stream stability. The visual
assessments for each stream reach concluded that the MY3 stream channel pattern and longitudinal
profiles, in -stream structure location/function, still closely match the profile design parameters and
MYO/baseline conditions (Appendix D). The MY3 plan form geometry and dimensions 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 did not present a stability concern or indicate a need for remedial action.
One cross section, XS-1 (riffle) located at station 15+00, exhibited a 20% change in bank height ratio
when compared to MY1 data. Based on visual observations and cross section survey, this area is stable
and modifications to BHR are due to the small size of the channel and transient sediment deposition.
Minor piping is occurring at two instream structures near approximate stations 26+00 and 26+50 which
will require minimal hand repair in MY4. These areas will continue to be monitored closely and remedial
action will be described in the MY4 report.
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5.3 Streambed Material Condition and Stability
A representative sediment sample was collected in R3 at a constructed riffle to assess streambed material
condition and stability. The dominant substrate for the project was verified as coarse sand (Figure 3). The
post -construction riffle substrate sampling indicated no significant change in streambed material
condition or stability during MY3.
5.4 Jurisdictional Stream Flow Documentation
Jurisdictional stream flow documentation and monitoring of restored intermittent reaches is achieved by
the installation of a flow gauge (continuous -read pressure transducer) within the thalweg of the channel
towards the middle portion of the Reach R5 (Figure 1). Additionally, to determine if rainfall amounts are
normal for the given year, precipitation data was obtained from CLAY Central Crops Research Station in
Johnston County, approximately nine miles southwest of the site. The monitoring gauge documented that
the stream exhibited surface flow for a minimum of 30 consecutive days throughout some portion of the
year during a year with normal rainfall conditions (See Figure 4).
5.5 Vegetation
Vegetation monitoring for MY3 was conducted utilizing seven vegetation monitoring Plots, with
monitoring conducted in accordance with the CVS-EEP Level I & II Monitoring Protocol (CVS, 2008) and
DMS Stream and Wetland Monitoring Guidelines (DMS, 2017). See Figure 1 in Appendix B for the
vegetation monitoring plot locations. Summary data and photographs of each Plot can be found in
Appendix 3.
Plot 2 had an average stem density of 283.3 stems per acre which does not meet the year 3 minimum of
320 stems per acre. Plot 2 contains seven stems total, one stem below the requirement to meet success
criteria. Loss in stem density from MY2 to MY3 is due to poor soil conditions. During MY4, Plot 2 will be
monitored closely, and WLS will assess the need for supplemental planting in MY4. All other vegetation
plots met MY3 interim success criteria.
The MY3 vegetation monitoring was also conducted utilizing visual assessment throughout the easement.
The results of the visual assessment did not indicate any negative changes to the existing vegetation
community. An area of encroachment approximately 0.008 acres was found along R1, see Figure 1. This
area has been mowed by the adjacent homeowner and is currently vegetated with fescue. Management
of this area has already begun and includes additional signage and a physical barrier (horse tape) to
delineate the easement boundary and discourage further mowing. During MY4 additional trees will be
planted in this area to ensure tree cover is achieved. Trees planted will be from the approved list in the
mitigation plan. A previous area of concern is located along R1 buffer as shown on the CCPV (noted first
in MY1). This area was utilized as a temporary staging area during construction and contains invasive
vegetation (kudzu) along the right buffer. The area was treated twice during the 2020 year, once in March
and once in October (see table below for treatments). Following these treatments, the percent cover of
kudzu was reduced to approximately 5%. This area will continue to be treated during MY4 and
documented in future reports.
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Kudzu foliar spray and cut
Kudzu foliar spray
Kudzu crown removal
Kudzu foliar spray
5.6 Wetlands
August 15, 2019
September 24, 2019
March 18, 2020
October 7, 2020
Wetland mitigation credits are not contracted or proposed for this project. One groundwater monitoring
well (pressure transducer) was installed during the baseline monitoring within an existing wetland area
along Reach R4. The well was installed as a reference to document groundwater levels within the
preservation area (Figure 4). No performance standards for wetland hydrology success was proposed in
the Mitigation Plan and therefore wetland mitigation monitoring is not included for this project. The
wetland gauge data is located in the appendices.
Lake Wendell Mitigation Project Page 9
FINAL Monitoring Report Year 3
Water & Land Solutions 4
References
Doll, B.A., Grabow, G.L., Hall, K.A., Halley, J., Harman, W.A., Jennings, G.D., and Wise, D.E. 2003. Stream
Restoration A Natural Channel Design Handbook.
Harrelson, Cheryl C; Rawlins, C.L.; Potyondy, John P. 1994. Stream Channel Reference Sites: An Illustrated
Guide to Field Technique. Gen. Tech. Rep. RM-245. Fort Collins, CO: U.S. Department of Agriculture,
Forest Service, Rocky Mountain Forest and Range Experiment Station. 61 p.
KCI Associates of NC, DMS. 2010. Using Pressure Transducers for Stream Restoration Design and
Monitoring.
Lee, M., Peet R., Roberts, S., Wentworth, T. CVS-NCEEP Protocol for Recording Vegetation, Version 4.1,
2007.
North Carolina Department of Environmental Quality, Division of Mitigation Services, Wildlands
Engineering, Inc. 2015. Neuse 01 Regional Watershed Plan Phase II. Raleigh, NC.
North Carolina Department of Environmental Quality, Division of Mitigation Services, 2017. Annual
Report Format, Data Requirements, and Content Guidance. Raleigh, NC.
Rosgen, D. L., 1994. A Classification of Natural Rivers. Catena 22: 169-199.
Rosgen, D.L., 1996. Applied River Morphology. Wildland Hydrology Books, Pagosa Springs, CO.
Schafale, M. P., and A. S. Weakley. 1990. Classification of the natural communities of North Carolina,
third approximation. North Carolina Natural Heritage Program. NCDENR Division of Parks and
Recreation. Raleigh, NC.
United States Army Corps of Engineers. 1987. Corps of Engineers Wetlands Delineation Manual.
Technical Report Y-87-1. Environmental Laboratory. US Army Engineer Waterways Experiment
Station. Vicksburg, MS.
1997. Corps of Engineers Wetlands Research Program. Technical Note VN-RS-4.1. Environmental
Laboratory. U.S. Army Engineer Waterways Experiment Station. Vicksburg, MS.
2003. Stream Mitigation Guidelines, April 2003, U.S. Army Corps of Engineers. Wilmington District.
Water and Land Solutions, LLC (2017). Lake Wendell Stream and Riparian Buffer Mitigation Plan.
NCDMS, Raleigh, NC.
Lake Wendell Mitigation Project Page 10
FINAL Monitoring Report Year 3
Appendices
FJ
Lake Wendell Mitigation Project
Appendix A — Background Tables and Figures
FJ
Lake Wendell Mitigation Project
Table 1. Mitigation Assets and Components
Lake Wendell Mitigation Project (NCDEQ DMS
Project ID# 97081)
Existing
Mitigation
As -Built
Project
Wetland
Footage
Plan
Footage or
Approach
Component
Position and
or
Footage or
Acreage
Restoration
Priority
Mitigation
Mitigation
(reach ID, etc.)'
HydroType2
Acreage
Stationing
Acreage
Level
Level
Ratio (X:1)
Credits*
Notes/Comments
Full Channel Restoration, Planted Buffer, Exclusion of Livestock, Permanent
R1
839
10+00 -18+39
806
839
R
PI/PII
1
806
Conservation Easement
Full Channel Restoration, Planted Buffer, Exclusion of Livestock, Permanent
R2
995
18+39 - 28+00
995
992
R
PI
1
995
Conservation Easement.
Full Channel Restoration, Planted Buffer, Exclusion of Livestock, Permanent
R3
1208
28+00 - 40+77
1208
1268
R
PI
1
1208
Conservation Easement.
R4
711
40+77 - 49+11
711
702
P
10
71
Livestock Exclusion, Invasive Control, Permanent Conservation Easement.
Bank Stabilization, Floodplain Debris Clearing, Invasive Control, Permanent
R4 (middle)
111
46+26 - 47+37
111
Ell
Ell
2.5
44
Conservation Easement.
Full Channel Restoration, Planted Buffer, Exclusion of Livestock, Permanent
R5 (upper)
210
10+00 - 12+10
210
210
R
PI/PII
1
210
Conservation Easement.
Enhancement, Planted Buffer, Exclusion of Livestock, Permanent Conservation
R5 lower
144
12+10-13+58
144
147
Ell
Ell
2.5
58
Easement.
Length and Area Summations by Mitigation Category
Restoration Level
Stream
(linear feet)
Riparian Wetland
(acres)
Non -riparian
Wetland
(acres)
Riverine
Non-Riverine
Restoration
3219
Enhancement
Enhancement I
Enhancement II
255
Creation
Preservation
711
High Quality Pres
Overall Assets Summary
Overall
Asset Category
Credits*
Stream
3,392
RP Wetland
NR Wetland
* Mitigation Credits are from the final approved mitigation plan, as verified by the as -built survey
Table 2. Project Activity and Reporting History
Lake Wendell Mitigation Project (NCDEQ DMS Project ID# 97081)
Elapsed Time Since grading complete: 2 yrs 7 months
Elapsed Time Since planting complete: 2 yrs 7 months
Number of reporting Years : 3
Activity or Deliverable
Data Collection
Complete
Completion or
Delivery
Project Contract Execution
N/A
3/18/2016
Final Mitigation Plan Submittal
N/A
8/25/2017
Section 404 General (Regional and Nationwide) Permit Verfication
N/A
10/5/2017
Begin Construction
N/A
11/13/2017
Mitigation Site Earthwork Completed
N/A
3/13/2018
Mitigation Site Planting Completed
N/A
3/30/2018
Installation of Monitoring Devices Completed
N/A
4/19/2018
Installation of Survey Monumentation and Boundary Marking
N/A
6/7/2018
As-built/Baseline (Year 0) Monitoring Report Submittal
6/23/2018
12/3/2018
Year 1 Monitoring Report Submittal
11/24/2018
12/4/2019
Year 2 MonitoringReport Submittal
10/29/2019
11/15/2019
Year 3 Monitoring Report Submittal
10/15/2020
12/11/2020
Year 4 Monitoring Report Submittal
N/A
N/A
Year 5 Monitoring Report Submittal
N/A
N/A
Year 6 Monitoring Report Submittal
N/A
N/A
Year 7 Monitoring Report Submittal
N/A
N/A
Table 3. Project Contacts
Lake Wendell Mitigation Project (NCDEQ DMS Project ID# 97081)
Mitigation Provider
Water & Land Solutions, LLC
7721 Six Forks Road, Suite 130 Raleigh, NC 27615
Primary Promect POC
Catherine Manner Phone: 571-643-3165
Construction Contractor
RiverWorks Construction
114 W. Main Street, Suite 106, Clayton, NC 27520
Primary Promect POC
Bill Wri ht Phone: 919-590-5193
Survey Contractor (Existing
WithersRavenel
Condition Surveys)
115 MacKenan Drive, Cary, NC 27511
Primary Project POC
Marshall Wight, PLS Phone: 919-469-3340
Survey Contractor (Conservation
True Line Surveying, PC
Easement, Construction and As-
Builts Survevs)
205 West Main Street, Clayton, NC 27520
Primary Promect POC
Curk T. Lane PLS 919-359-0427
Planting Contractor
RiverWorks Construction
114 W. Main Street, Suite 106, Clayton, NC 27520
Primary Project POC
Bill Wright Phone: 919-590-5193
Seeding Contractor
RiverWorks Construction
114 W. Main Street, Suite 106, Clayton, NC 27520
Primary Project POC
Bill Wri ht Phone: 919-590-5193
Seed Mix Sources
Green Resource
5204 Highgreen Ct., Colfax, NC 27235
Rodney Montgomery Phone: 336-215-3458
Nursery Stock Suppliers
Foggy Mountain Nursery (Live Stakes)
797 Helton Creek Rd, Lansing, NC 28643
Glenn Sullivan Phone: 336-977-2958
Dykes & Son Nursery (Bare Root Stock)
825 Maude Etter Rd, Mcminnville, Tn 37110
Jeff Dykes Phone: 931-668-8833
Monitoring Performers
Water & Land Solutions, LLC
7721 Six Forks Road, Suite 130 Raleigh, NC 27615
Stream Monitoring POC
Emily Dunnigan Phone: 269-908-6306
Ve etation Monitoring POC
lEmily Dunni an Phone: 269-908-6306
Parameters
Reach 7
Reach 2
Reach 3
Reach 4
Reach 5
Length of reach (linear feet)
850
952
1121
955
354
Valley confinement (Confined, moderately confined, unconfined)
unconfined
unconfined
unconfined
unconfined
unconfined
Drainage area (Acres and Square Miles)
33 acres, 0.05 sq mi
64 acres, 0.1 sq mi
83 acres, 0.13 sq mi
102 acres, 0.16 sq
mi
10 acres, 0.02 sq mi
Perennial, Intermittent, Ephemeral
Perennial
Perennial
Perennial
Perennial
Intermittent
NCDWR Water Quality Classification
C; NSW
C; NSW
C;NSW
C; NSW
C; NSW
Stream Classification (existing)
G5c
E5/F5
N/A pond
E5
G5
Stream Classification (proposed)
C5b
C5
CS
IE5
C5b
Evolutionary trend (Simon)
II
II (upper), III/IV
(lower
N/A pond
1
II (lower), III (upper)
FEMA classification
N/A
N/A
N/A
lZone AE
N/A
Wetland Summary Information
Parameters
Wetland 1
Wetland 2
Wetland 3
Size of Wetland (acres)
N/A
N/A
N/A
Wetland Type (non -riparian, riparian riverine or riparian non-riverine)
Mapped Soil Series
Drainage class
Soil Hydric Status
Source of Hydrology
Restoration or enhancement method (hydrologic, vegetative etc.)
Regulatory Considerations
Parameters
Applicable?
Resolved?
Supporting Docs?
Water of the United States - Section 404
Yes
Yes
Categorical
Exclusion
Water of the United States - Section 401
Yes
Yes
Categorical
Exclusion
Endangered Species Act
No
Yes
Categorical
Exclusion
Historic Preservation Act
No
N/A
Categorical
Exclusion
Coastal Zone Management Act (CZMA or CAMA)
No
N/A
Categorical
Exclusion
FEMA Floodplain Compliance
Yes
Yes
Categorical
Exclusion
Essential Fisheries Habitat
No
N/A
Categorical
Exclusion
Appendix B —Visual Assessment Data
FJ
Lake Wendell Mitigation Project
Table 5. Visual Stream Morphology Stability Assessment
Project Lake Wendell Mitigation Project (NCDEQ DMS Project ID# 97081)
Reach ID R1, R2, R3, R4, R5
Assessed Length 4221
Number
Number with
Footage with
Adjusted % for
Stable,
Number of
Amount of
% Stable,
Stabilizing
Stabilizing
Stabilizing
Major Channel
Channel
Performing as
Total Number
Unstable
Unstable
Performing as
Woody
Woody
Woody
Cate o
Sub-Cateaory
Metric
Intended
in As -built
Se ments
Foota a
Intended
Ve etation
Ve etation
Ve etation
1. Bank
1. Scoured/Eroding
Bank lacking vegetative cover resulting simply from poor growth
and/or scour and erosion
0
0
100%
0
0
100
Banks undercut/overhanging to the extent that mass wasting
2. Undercut
appears likely. Does NOT include undercuts that are modest,
0
0
100%
0
0
100
appear sustainable and are providing habitat.
13. Mass Wasting
Bank slumping, calving, or collapse
0
0
100%
0
0
100%
Totals
0
0
100%
0
0
100
2. Engineered
Structures
1. Overall Integrity
Structures physically intact with no dislodged boulders or logs.
68
68
100
2. Grade Control
Grade control structures exhibiting maintenance of grade across the
sill.
41
41
100%
2a. Piping
Structures lacking any substantial flow underneath sills or arms.
22
25
88
Bank erosion within the structures extent of influence does not
3. Bank Protection
exceed 15%. (See guidance for this table in EEP monitoring
16
16
100
guidance document)
Pool forming structures maintaining — Max Pool Depth : Mean
4. Habitat
Bankfull Depth ratio > 1.6 Rootwads/logs providing some cover at
16
16
100
base -flow.
Table 5a. Vegetation Condition Assessment
Project Lake Wendell Mitigation Project (NCDEQ DMS Project ID# 97081)
Planted Acreage' 8.9
Mapping
CCPV
Number of
Combined
% of Planted
Vecletation CateqorV
Definitions
Threshold
De fiction
Pol ons
Acrea a
Acreacle
1. Bare Areas
Very limited cover of both woody and herbaceous material.
1 acre
Solid light blue
0
0.00
0.0%
2. Low Stem Density Areas
Woody stem densities clearly below target levels based on MY3, 4, or 5 stem count criteria.
0.1 acres
Pattern and
0
0.00
0.0%
Color
Total
0
0.00
0.0%
3. Areas of Poor Growth Rates or Vigor
Areas with woody stems of a size class that are obviously small given the monitoring year.
0.25 acres
Pattern and
0
0.00
0.0%
Color
Cumulative Total
0
0.00
0.0%
Easement Acreage 12
Ve etation Category
Definitions
Mapping
Threshold
CCPV
De fiction
Number of
Pol ons
Combined
Acrea a
% of Easement
Acreage
4. Invasive Areas of Concern
Areas or points (if too small to render as polygons at map scale).
1000 SF
orange hatched
1
0.13
1.1 %
5. Easement Encroachment Areas'
Areas or points (if too small to render as polygons at map scale).
none
yellow hatched
1
0.01
0.1
PS-2, R1, facing upstream, Sta 13+50, April 27, 2018 (MY-00)
: .
77
PS-2, R1, facing downstream, Sta 13+50, April 27, 2018 (MY-00)
PS-2, R1, facing upstream, Sta 13+50, March 10, 2020 (MY-03)
i
PS-2, R1, facing downstream, Sta 13+50, March 10, 2020 (MY-03)
a
r�
I�
A�ht
t �t P.. i i R.� �=f ✓�, 0.
}� pJ
PS-3, R1, facing downstream, Sta 17+50, March 10, 2020 (MY-03)
"' .—,
711 - U
i oa
L
A W, ,- f e x+' 's`, - 1 may•-0mv y - ra
y
PS-3, R1, facing upstream, Sta 17+50, March 10, 2020 (MY-03)
i
PS-6, R2, facing downstream, Sta 27+50, March 10, 2020 (MY-03)
, k
PS-7, R2, facing upstream, Sta 28+25, March 10, 2020 (MY-03)
r �
y
Ilk
Vol
PS-11, R4, facing downstream, Sta 44+50, August 21, 2015 (MY-00)
yA,-
r
3
ate. RWA'4,
n
PS-12, R5, facing downstream, Sta 10+00, April 27, 2018 (MY-00)
t� y, gpl�i�li �11 i� v'vq 1 e Wt .IfllT
qqt
t`-�-
a
PS-11, R4, facing downstream, Sta 44+50, March 10, 2020 (MY-03)
I 1 .
Eo
kit-
-�xa Y•
� i
µye Y
PS-13, R5, facing upstream, old crest gauge, Sta 13+50, Apr 27, 2018 (MY-00)
E
1,
vI
Aft..
I., Mm''
Veg Plot 1, November 5, 2018 (MY-01)
7
7
'VI
k 14
7,
Veg Plot 2, April 27, 2018 (MY-00)
W%. 4 MM
10. 14.2020
Veg Plot 1, October 14, 2020 (MY-03)
akw
-
L NI-
Veg Plot 2, October 14, 2020 (MY-03)
Veg Plot 3, November 5, 2018 (MY-01)
i
Veg Plot 3, October 14, 2020 (MY-03)
.'
q0p
g Rj if
,•
Veg Plot 4, October 14, 2020 (MY-03)
h
_ L
k.
t 4
Veg Plot 5, April 13, 2018 (MY-00)
.R
''f
r•X�r
w �
Art
� r f
1
Veg Plot 5, October 14, 2020 (MY-03)
ems!
/ ` II
Veg Plot 6, October 14, 2020 (MY-03)
Veg Plot 7, April 13, 2018 (MY-00)
I'y�.f .M R�' •x d. a�
Veg Plot 7, October 14, 2020 (MY-03)
Appendix C — Vegetation Plot Data
FJ
Lake Wendell Mitigation Project
EEP Project Code 1. Project Name: Lake Wendell
Current Plot Data
(MY3 2020)
FJ
Appendix D — Stream Measurement and Geomorphology Data
Lake Wendell Mitigation Project
Project Name
Lake Wendell Mitigation Project
Project ID
97081
Reach ID
R1
Cross Section ID
XS-1
Field Crew
K. Obermiller, E. Dunnigan
Dimension Data Summary: MY3 2020
Bankfull Elevation (ft)
287.5
Low Bank Height Elevation (ft)
287.4
Bankfull Max Depth (ft)
0.6
Low Bank Height (ft)
0.5
Bank Height Ratio
< 1.0
Bankfull X-section Area (ft2)
2.0
% Change Bank Height Ratio
20.0%
Looking Downstream
XS-1 Riffle, STA 14+76
Baseline MYO MY1 —MY2 MY3 — — Bankfull Elevation Floodprone Area
291
290
r
w
289
c
0
r
288
LU
287
286
0 10 20 30 40 50 60 70
Width (feet)
* Bank Height Ratio is calculated based on MY1 cross -sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document produced by the technical industry work group
consisting of the NCIRT, NCDMS, and Industry Practitioner sin NC (912018). The remainder of the bankfull dimensions are calculated based on the current year's low bank height.
MY1 used in place of as -built (MYO) due to issues with the as -built survey standards identified during MY1.
Lake Wendell Mitigation Project Water and Land Solutions
DMS Project 497081 Annual Monitoring Report
October 2020 Monitoring Year 3 of 7
Project Name
Lake Wendell Mitigation Project
Project ID
97081
ReachlD
R2
Cross Section ID
XS-2
Field Crew
K. Obermiller, E. Dunnigan
Dimension Data Summary: MY3 2020
Bankfull Elevation (ft)
275.8
Low Bank Height Elevation (ft)
276.0
Bankfull Max Depth (ft)
1.4
Low Bank Height (ft)
1.6
Bank Height Ratio
1.1
Bankfull X-section Area (ftz)
4.1
Change Bank Height Ratio
10.0%
Looking Downstream
XS-2 Pool, STA 20+67
Baseline MYO MY1 —MY2 —MY3 — — Bankfull Elevation Floodprone Area
279
278
a)
d
277
c
0
276
----------------------------------------------- -- -------- ---------------------
w
275
274
0 10 20 30 40 50 60 70
Width (feet)
Bank Height Ratio is calculated based on MY1 cross -sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document produced by the technical industry work group
consisting of the NCIRT, NCDMS, and Industry Practitioner sin NC (912018). The remainder of the bankfu# dimensions are calculated based on the current year's low bank height.
" MY1 used in place of as -built (MY0) due to issues with the as -built survey standards identified during MY1.
Lake Wendell Mitigation Project Water and Land Solutions
DMS Project #97081 Annual Monitoring Report
October 2020 Monitoring Year 3 of 7
Project Name
Lake Wendell Mitigation Project
Project ID
97081
ReachlD
R2
Cross Section ID
XS-3
Field Crew
K. Obermiller, E. Dunnigan
Dimension Data Summary: MY3 2020
Bankfull Elevation (ft)
263.0
Low Bank Height Elevation (ft)
263.1
Bankfull Max Depth (ft)
0.9
Low Bank Height (ft)
1.0
Bank Height Ratio
1.1
Bankfull X-section Area (ftz)
3.5
Change Bank Height Ratio
10.0%
Looking Downstream
XS-3 Riffle, STA 27+95
Baseline MYO —MY1 — MY2 MY3 — — Bankfull Elevation Floodprone Area
266
265
m
264
\
�-
0
263
------------------
-------------------------
-------- --------------------------------------
w
262
261
0
10 20 30 40 50 60 70
Width (feet)
Bank Height Ratio is calculated based on MY1 cross -sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document produced by the technical industry work group
consisting of the NCIRT, NCDMS, and Industry Practitioner sin NC (912018). The remainder of the bankfu# dimensions are calculated based on the current year's low bank height.
" MY1 used in place of as -built (MY0) due to issues with the as -built survey standards identified during MY1.
Lake Wendell Mitigation Project Water and Land Solutions
DMS Project #97081 Annual Monitoring Report
October 2020 Monitoring Year 3 of 7
Project Name
Lake Wendell Mitigation Project
Project ID
97081
Reach ID
R3
Cross Section ID
XS-4
Field Crew
K. Obermiller, E. Dunnigan
Dimension Data Summary: MY3 2020
Bankfull Elevation (ft)
254.2
Low Bank Height Elevation (ft)
254.1
Bankfull Max Depth (ft)
1.5
Low Bank Height (ft)
1.3
Bank Height Ratio
< 1.0
Bankfull X-section Area (ftz)
8.5
Change Bank Height Ratio
10.0%
Looking Downstream
XS-4 Pool, STA 35+00
Baseline MYO —MY1 - MY2 MY3 — — Bankfull Elevation Floodprone Area
257
256
m
255-
c
0
d
254
w
253
252
0 10 20 30 40 50 60 70
Width (feet)
Bank Height Ratio is calculated based on MY1 cross -sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document produced by the technical industry work group
consisting of the NCIRT, NCDMS, and Industry Practitioner sin NC (912018). The remainder of the bankfu# dimensions are calculated based on the current year's low bank height.
" MY1 used in place of as -built (MY0) due to issues with the as -built survey standards identified during MY1.
Lake Wendell Mitigation Project Water and Land Solutions
DMS Project #97081 Annual Monitoring Report
October 2020 Monitoring Year 3 of 7
Project Name
Lake Wendell Mitigation Project
Project ID
97081
ReachlD
R3
Cross Section ID
XS-5
Field Crew
K. Obermiller, E. Dunnigan
Dimension Data Summary: MY3 2020
Bankfull Elevation (ft)
251.5
Low Bank Height Elevation (ft)
251.5
Bankfull Max Depth (ft)
0.8
Low Bank Height (ft)
0.8
Bank Height Ratio
1.0
Bankfull X-section Area (ftz)
2.7
Change Bank Height Ratio
0.0%
Looking Downstream
XS-5 Riffle, STA 37+32
Baseline MYO MY1 MY2 MY3 — — Bankfull Elevation Floodprone Area
254
253
a)
d
252
0
----------- --------- --------------------
251
w
250
249
0 10 20 30 40 50 60 70
Width (feet)
*Bank Height Ratio is calculated based on MY7 cross -sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document produced by the technical industry work group
consisting of the NCIRT, NCDMS, and Industry Practitioner sin NC (912018). The remainder of the bankfull dimensions are calculated based on the current year's low bank height.
MY1 used in place of as -built (MY0) due to issues with the as -built survey standards identified during MY7.
Lake Wendell Mitigation Project Water and Land Solutions
DMS Project 497081 Annual Monitoring Report
October 2020 Monitoring Year 3 of 7
Project Name
Lake Wendell Mitigation Project
Project ID
97081
Reach ID
R4 (Preservation)
Cross Section ID
XS-6
Field Crew
K. Obermiller, E. Dunnigan
Dimension Data Summary: MY3 2020
Bankfull Elevation (ft)
242.2
Low Bank Height Elevation (ft)
242.3
Bankfull Max Depth (ft)
2.5
Low Bank Height (ft)
2.6
Bank Height Ratio
1.0
Bankfull X-section Area (ftz)
11.2
Change Bank Height Ratio
0.0%
ie
:►`QA v
z
Looking Downstream
XS-6 Riffle, STA 43+92
Baseline MYO MY1 MY2 MY3 — — Bankfull Elevation Floodprone Area
245
244
a) 243
0 242
------------------------------------------- ------------------------
d
w 241
240
239
0 10 20 30 40 50 60 70
Width (feet)
Bank Height Ratio is calculated based on MY 1 cross -sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document produced by the technical industry work group
consisting of the NCIRT, NCDMS, and Industry Practitioner sin NC (912018). The remainder of the bankfull dimensions are calculated based on the current year's low bank height.
MY1 used in place of as -built (MY0) due to issues with the as -built survey standards identified during MYI.
Lake Wendell Mitigation Project Water and Land Solutions
DMS Project 497081 Annual Monitoring Report
October 2020 Monitoring Year 3 of 7
Project Name
Lake Wendell Mitigation Project
ProjectID
97081
Reach ID
R4 (Preservation)
Cross Section ID
XS-7
Field Crew
K. Obermiller, E. Dunnigan
Dimension Data Summary: MY3 2020
Bankfull Elevation (ft)
241.8
Low Bank Height Elevation (ft)
241.9
Bankfull Max Depth (ft)
3.0
Low Bank Height (ft)
3.1
Bank Height Ratio
1.0
Bankfull X-section Area (ftz)
12.3
Change Bank Height Ratio
0.0%
Looking Downstream
XS-7 Pool, STA 44+14
Baseline MYO —MY1 MY2 MY3 — — Bankfull Elevation Floodprone Area
244
243
y 242
---------------------------------------- --- -----------------
0 241
m
w 240
239
238
0 10 20 30 40 50 60 70
Width (feet)
Bank Height Ratio is calculated based on MY1 cross -sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document produced by the technical industry work group
consisting of the NCIRT, NCDMS, and Industry Practitioner sin NC (912018). The remainder of the bankfu# dimensions are calculated based on the current year's low bank height.
" MY1 used in place of as -built (MY0) due to issues with the as -built survey standards identified during MY1.
Lake Wendell Mitigation Project Water and Land Solutions
DMS Project #97081 Annual Monitoring Report
October 2020 Monitoring Year 3 of 7
Project Name
Lake Wendell Mitigation Project
Project ID
97081
ReachlD
R5
Cross Section ID
XS-8
Field Crew
K. Obermiller, E. Dunnigan
Dimension Data Summary: MY3 2020
Bankfull Elevation (ft)
283.8
Low Bank Height Elevation (ft)
283.7
Bankfull Max Depth (ft)
0.6
Low Bank Height (ft)
0.5
Bank Height Ratio
< 1.0
Bankfull X-section Area (ftz)
2.1
Change Bank Height Ratio
10.0%
Looking Downstream
XS-8 Riffle, STA 12+35
Baseline MYO —MY1 — MY2 MY3 — — Bankfull Elevation Floodprone Area
287
286
m
285
c
0
------------------
-------------------------
d 284
/ ----------------------
--------- ----------
w
283
282
0 10 20 30 40 50 60 70
Width (feet)
Bank Height Ratio is calculated based on MY1 cross -sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document produced by the technical industry work group
consisting of the NCIRT, NCDMS, and Industry Practitioner sin NC (912018). The remainder of the bankfu# dimensions are calculated based on the current year's low bank height.
" MY1 used in place of as -built (MY0) due to issues with the as -built survey standards identified during MY1.
Lake Wendell Mitigation Project Water and Land Solutions
DMS Project #97081 Annual Monitoring Report
October 2020 Monitoring Year 3 of 7
Lake Wendell
Figure 3: Pebble Count
Date Collected: 9/21/2018 10/18/2019 9/30/2020
MY 1 MY? MY3 MY4 MYS MYS MY7
MATERIAL
PARTICLE
SIZE (mm)
Total #
Total #
Total #
Total #
Total #
Total #
Total #
SILT/CLAY
Silt/Clay
<.063
6
10
3
VeryFine
.063-.125
12
4
7
Fine
.125-.25
9
3
19
S A N
Medium
.25-.50
13
5
Coarse
.50-1.0
18
4
46
Very Coarse
1.0-2.0
17
12
VeryFine
2.0-2.8
11
1
1
�C) DQ ��(
0.
VeryFine
2.8-4.0
1
�.....
0
Fine
4.0-5.6
4
2
2
O
Fine
5.6-8.0
4
4
7
0
Medium
8.0-11.0
2
5
4
Medium
11.0-16.0
1
11
6
006 o
Coarse
16-22.6
1
6
5
DO ,.. '0'
Coarse
22.6-32
1
8
DDr �..0�
Very Coarse
32-45
10
Very Coarse
45-64
1
5
Small
64-90
5
Small
90-128
3
COBBLE
Large
128-180
1
-
Large
180-256
C�...0.-
Small
256-362
Small
362-512
II�
�J-
Medium
512-1024
Large -Very Large
1024-2048
BEDROCK
Bedrock
> 2048
Total
11001
100
100
Cumulative
MY3
D16
0.11
0.2
0.16
D35
0.38
1.7
0.55
D50
0.73
15
0.69
D65
1.3
27
0.86
D84
3.5
60
7.7
D95
9.4
120
16
Riffle
Pool
Channel materials
Channel materials
D16 =
0.53
D16 =
0.089
D35 =
0.68
D35 =
0.15
D50 =
0.82
D50 =
0.2
D65 =
2.4
D65 =
0.55
D84 =
I ill
D84 =
0.81
D95 =
1 181
D95 =
8.7
Weighted pebble count by bed features Lake Wendell Mitigation Project
65% riffle 35% pool
weighted percent -Riffle Pool -# of particles
100%
90%
80%
70%
r
60%
c
50%
d
m
40%
a
30%
20%
10%
0%
0.5
0.45
0.4
to'
0.35
a
0.3
025 m
02 °
m
0.15 �
0.1 uD
0.05
0 t°o
0.01 0.1 1 10 100 1000 10000
particle size (mm)
Table 7a. Baseline Stream Data Summary
Lake Wendell Mitigation Project (NCDEQ DMS Project ID# 97081)
Parameter
Pre -Restoration
Condition
Reference
Reach Data
Design
As -Built/
Baseline
Reach ID: R1
Dimension (Riffle)
Min
Max
Min
Max
Min
Max
Min
Max
Bankfull Width (ft)
5.0
7.0
4.5
8.3
5.9
5.9
6.0
Floodprone Width (ft)
6.1
18.7
10.0
20.0
14.0
30.0
25.3
Bankfull Mean Depth (ft)
0.5
0.7
0.8
1.6
0.5
0.5
0.5
Bankfull Max Depth (ft)
0.8
1.5
0.9
1.3
0.6
0.6
0.7
Bankfull Cross Sectional Area (ft2)
2.5
2.8
3.0
5.0
2.7
2.7
2.7
Width/Depth Ratio
5.3
17.7
6.2
14.2
13.0
13.0
12.3
Entrenchment Ratio
1.2
9.9
7.1
8.4
2.4
5.1
4.2
Bank Height Ratiol
1.1
1 2.3
1 0.9
1 1.1
1 1.0
1 1.0
1.0
Profile
Riffle Length (ft)
6.2
38.2
9.5
22.7
10.0
30.0
11.3
31.2
Riffle Slope (ft/ft)
0.016
0.037
0.009
0.015
0.020
0.035
0.017
0.036
Pool Length (ft)
4.1
7.9
6.1
8.7
7.0
10.0
5.5
12.5
Pool Max Depth (ft)
1.1
2.3
1.8
2.4
1.1
1.6
1.2
1.7
Pool Spacing (ft)l
26.4
1 83.9
14.4
22.3
11.8
35.5
7.7
33.3
Pattern
Channel Beltwidth (ft)
11.0
32.0
23.4
29.0
30.0
45.0
25.0
51.0
Radius of Curvature (ft)
8.0
50.0
11.2
17.5
15.0
25.0
11.0
36.0
Rc:Bankfull Width (ft/ft)
1.6
10.0
1.6
2.5
2.0
3.0
2.1
4.2
Meander Wavelength (ft)
20.0
100.0
43.4
65.1
30.0
44.8
23.0
56.0
Meander Width Ratiol
2.2
1 6.4
3.9
1 4.5
1 5.1
7.6
4.1
7.4
Transport Parameters
Boundary Shear Stress Ib/ft2)
---
---
0.67
---
Max part size (mm) mobilized at bankfull
---
---
2.00
---
Stream Power W/m2)
---
---
42.00
---
Additional Reach Parameters
Rosgen Classification
G5c
E5/C5
B5c
B5c
Bankfull Velocity (fps)
3.7
4.5
4.0
4.0
Bankfull Discharge (cfs)
10.0
---
10.0
10.0
Sinuosity
1.05
1.1 - 1.3
1.10
1.10
Water Surface Slope (Channel) (ft/ft)l
0.025
0.020
0.025
0.026
Bankfull Slope (ft/ft)l
0.027
1 0.020
0.025
1 0.027
Parameter
Pre -Restoration
Condition
Reference
Reach Data
Design
As -Built/
Baseline
Reach ID: R2
Dimension (Riffle)
Min
Max
Min
Max
Min
Max
Min
Max
Bankfull Width (ft)
5.9
9.5
4.5
8.3
6.8
6.8
6.1
Floodprone Width (ft)
13.7
14.1
10.0
20.0
15.0
30.0
46.0
Bankfull Mean Depth (ft)
0.6
0.7
0.8
1.6
0.5
0.5
0.6
Bankfull Max Depth (ft)
0.9
1.0
0.9
1.3
0.7
0.7
0.9
Bankfull Cross Sectional Area (ft2)
4.2
5.9
3.0
5.0
3.6
3.6
3.5
Width/Depth Ratio
8.2
15.2
6.2
14.2
13.0
13.0
10.8
Entrenchment Ratio
1.4
2.2
7.1
8.4
2.2
4.4
7.5
Bank Height Ratio
1.8
1 1.9
0.9
1 1.1
1.0
1.0
1.0
Profile
Riffle Length (ft)
5.9
27.7
9.5
22.7
10.0
30.0
9.9
33.3
Riffle Slope (ft/ft)
0.015
0.029
0.009
0.015
0.015
0.020
0.016
0.033
Pool Length (ft)
3.9
7.8
6.1
8.7
7.9
9.8
5.4
13.6
Pool Max Depth (ft)
2.0
3.8
1.8
2.4
1.1
1.6
1.2
1.9
Pool Spacing (ft)l
17.0
1 51.0
1 14.4
1 22.3
1 22.0
1 48.0
13.0
1
37.1
Pattern
Channel Beltwidth (ft)
13.0
37.0
23.4
29.0
30.0
45.0
25.0
47.0
Radius of Curvature (ft)
7.0
29.0
11.2
17.5
15.0
25.0
9.8
30.3
Rc:Bankfull Width (ft/ft)
1.2
4.9
1.6
2.5
2.0
3.0
2.5
4.2
Meander Wavelength (ft)
42.0
121.0
43.4
65.1
30.0
44.8
29.0
17.0
Meander Width Ratiol
2.3
6.3
3.9
4.5
1 5.1
7.6
4.4
7.9
Transport Parameters
Boundary Shear Stress Ib/ft2)
-
-
0.51
-
Max part size (mm) mobilized at bankfull
-
-
2.00
-
Stream Power W/mZ)
-
-
29.10
-
Additional Reach Parameters
Rosgen Classification
E5/F5
E5/C5
C5
C5
Bankfull Velocity (fps)
4.1
4.5
4.7
4.0
Bankfull Discharge (cfs)
16.9
-
16.9
16.9
Sinuosity
1.14
1.1
- 1.3
1.17
1.15
Water Surface Slope (Channel) (ft/ft)l
0.016
0.020
0.018
0.019
Bankfull Slope (ft/ft)l
0.017
1 0.020
1
0.017
1 0.019
Parameter
Pre -Restoration
Condition
Reference
Reach Data
Design
As -Built/
Baseline
Reach ID: R3 (Pond)
Dimension (Riffle)
Min
Max
Min
Max
Min
Max
Min
Max
Bankfull Width (ft)
9.5
-
4.5
8.3
7.8
7.8
7.9
Floodprone Width (ft)
13.7
-
10.0
35.0
17.0
35.0
59.0
Bankfull Mean Depth (ft)
0.6
-
0.8
1.6
0.6
0.6
0.5
Bankfull Max Depth (ft)
0.9
-
0.9
1.3
0.7
0.8
0.8
Bankfull Cross Sectional Area (ft2)
5.9
-
3.0
5.0
4.4
4.4
3.7
Width/Depth Ratio
15.2
-
6.2
14.2
14.0
14.0
16.8
Entrenchment Ratio
1.4
-
7.1
8.4
2.2
4.5
7.4
Bank Height Ratio
1.8
-
0.9
1 1.1
1.0
1.0
1.0
Profile
Riffle Length (ft)
-
-
9.5
22.7
12.0
33.0
10.0
30.0
Riffle Slope (ft/ft)
-
-
0.009
0.015
0.015
0.022
0.020
0.035
Pool Length (ft)
-
-
6.1
8.7
8.0
10.5
7.0
10.0
Pool Max Depth (ft)
-
-
1.8
2.4
1.4
2.0
1.1
1.6
Pool Spacing (ft)
-
I -
1 14.4
1 22.3
1 25.0
1 55.0
11.8
1 35.5
Pattern
Channel Beltwidth (ft)
-
-
23.4
29.0
25.0
45.0
30.0
46.0
Radius of Curvature (ft)
-
-
11.2
17.5
16.0
23.0
15.0
27.0
Rc:Bankfull Width (ft/ft)
-
-
1.6
2.5
2.0
3.0
2.5
4.2
Meander Wavelength (ft)
-
-
43.4
65.1
30.0
44.8
21.0
49.0
Meander Width Ratio
-
-
3.9
1 4.5
1 3.3
5.7
5.1
7.6
Transport Parameters
Boundary Shear Stress Ib/ft2)
-
-
0.52
-
Max part size (mm) mobilized at bankfull
-
-
2.00
-
Stream Power W/mZ)
-
-
29.80
-
Additional Reach Parameters
Rosgen Classification
N/A (Pond)
E5/C5
C5
C5
Bankfull Velocity (fps)
2.7
4.5
4.4
4.0
Bankfull Discharge (cfs)
16.9
-
16.9
16.9
Sinuosity
-
1.1 - 1.3
1.18
1.17
Water Surface Slope (Channel) (ft/ft)l
0.016
1 0.020
1 0.017
1 0.015
Bankfull Slope (ft/ft)
-
1 0.020
1 0.018
1 0.016
Parameter
Pre -Restoration
Condition
Reference
Reach Data
Design
As -Built/
Baseline
Reach ID: R4
Dimension (Riffle)
Min
Max
Min
Max
Min
Max
Min
Max
Bankfull Width (ft)
6.2
-
4.5
8.3
6.2
8.5
6.2
Floodprone Width (ft)
44.1
-
10.0
35.0
17.0
35.0
17.0
Bankfull Mean Depth (ft)
1.0
-
0.8
1.6
0.7
0.9
0.7
Bankfull Max Depth (ft)
1.8
-
0.9
1.3
0.8
0.9
0.8
Bankfull Cross Sectional Area (ft2)
6.2
-
3.0
5.0
6.2
6.2
6.2
Width/Depth Ratio
6.3
-
6.2
14.2
12.0
12.0
12.0
Entrenchment Ratio
7.1
-
7.1
8.4
1.8
5.3
1.8
Bank Height Ratio
1.0
-
0.9
1.1
1.0
1.1
1.0
Profile
Riffle Length (ft)
9.5
21.9
9.5
22.7
12.0
33.0
9.5
21.9
Riffle Slope (ft/ft)
0.013
0.022
0.009
0.015
0.013
0.022
0.013
0.022
Pool Length (ft)
6.1
8.5
6.1
8.7
8.0
10.5
6.1
8.5
Pool Max Depth (ft)
2.0
2.2
1.8
2.4
1.4
2.0
2.0
2.2
Pool Spacing (ft)l
18.0
1 44.0
14.4
22.3
25.0
55.0
18.0
44.0
Pattern
Channel Beltwidth (ft)
29.0
53.0
23.4
29.0
25.0
45.0
29.0
53.0
Radius of Curvature (ft)
12.0
20.0
11.2
17.5
16.0
23.0
12.0
20.0
Rc:Bankfull Width (ft/ft)
1.9
3.2
1.6
2.5
2.0
3.0
1.9
3.2
Meander Wavelength (ft)
52.0
77.0
43.4
65.1
30.0
44.8
52.0
77.0
Meander Width Ratiol
4.7
1 8.5
1 3.9
4.5
3.3
5.7
4.7
8.5
Transport Parameters
Boundary Shear Stress Ib/ft2)
-
-
0.49
-
Max part size (mm) mobilized at bankfull
-
-
2.00
-
Stream Power W/mZ)
-
-
29.00
-
Additional Reach Parameters
Rosgen Classification
E5
E5/C5
E5
E5
Bankfull Velocity (fps)
3.2
4.0
3.2
3.2
Bankfull Discharge (cfs)
23.7
-
23.7
23.7
Sinuosity
1.25
1.1
- 1.3
1.25
1.25
Water Surface Slope (Channel) (ft/ft)
0.014
0.020
0.014
0.014
Bankfull Slope (ft/ft)l
0.015
0.020
0.015
0.015
Parameter
Pre -Restoration
Condition
Reference
Reach Data
Design
As -Built/
Baseline
Reach ID: R5
Dimension (Riffle)
Min
Max
Min
Max
Min
Max
Min
Max
Bankfull Width (ft)
2.3
-
4.5
8.3
4.4
4.4
4.3
Floodprone Width (ft)
3.3
-
10.0
35.0
15.0
30.0
24.0
Bankfull Mean Depth (ft)
0.6
-
0.8
1.6
0.4
0.4
0.4
Bankfull Max Depth (ft)
0.8
-
0.9
1.3
0.5
0.5
0.7
Bankfull Cross Sectional Area (ft)
1.4
-
3.0
5.0
1.5
1.5
1.6
Width/Depth Ratio
3.5
-
10.3
14.2
13.0
13.0
12.1
Entrenchment Ratio
1.5
-
2.0
5.0
3.4
6.8
5.5
Bank Height Ratiol
3.3
-
0.9
1.1
1.0
1.0
1.0
Profile
Riffle Length (ft)
15.7
37.1
5.1
13.9
13.0
31.0
10.3
37.0
Riffle Slope (ft/ft)
0.019
0.027
0.017
0.026
0.015
0.027
0.017
0.027
Pool Length (ft)
3.1
11.0
4.5
7.0
6.8
9.4
4.7
8.5
Pool Max Depth (ft)
2.1
2.3
1.1
1.7
1.1
1.6
1.1
1.5
Pool Spacing (ft)l
11.0
1 36.0
1 10.0
1 30.0
1 22.0
1 44.0
8.7
1 33.3
Pattern
Channel Beltwidth (ft)
-
-
-
-
-
-
-
-
Radius of Curvature (ft)
-
-
-
-
-
-
-
-
Rc:Bankfull Width (ft/ft)
-
-
-
-
-
-
-
-
Meander Wavelength (ft)
-
-
-
-
-
-
-
-
Meander Width Ratio
-
I -
I -
I-
-
-
-
-
Transport Parameters
Boundary Shear Stress Ib/ft2)
-
-
0.48
-
Max part size (mm) mobilized at bankfull
-
-
2.00
-
Stream Power W/mZ)
-
-
24.30
-
Additional Reach Parameters
Rosgen Classification
G5
B5
B5
B5
Bankfull Velocity (fps)
4.7
4.0
4.5
4.5
Bankfull Discharge (cfs)
4.5
-
4.5
4.5
Sinuosity
1.03
1.1 - 1.2
1.25
1.06
Water Surface Slope (Channel) (ft/ft)l
0.026
1 0.025
0.027
0.025
Bankfull Slope (ft/ft)l
0.025
1 0.025
0.027
1 0.024
Table 7b. Monitoring Data - Dimensional MorphologySumma Dimensional Parameters - Cross Sections
Cross Section 1 (Riffle)
Cross Section 2 (Pool)
Cross Section 3 (Riffle)
Parameters
Base
MY1
MY2
MY3
MY4
MY5
MY+
Base
MY1
MY2
MY3
MY4
MY5
MY +
Base
MY1
MY2
MY3
MY4
MY5
MY+
Bankfull Width (ft)
5.8
5.5
10.4
8.6
6.1
7.9
7.0
4.0
6.6
6.8
6.4
6.0
Floodprone Width (ft)
23.1
23.0
21.7
21.6
45.0
45.0
49.0
49.0
46.0
45.0
50.0
46.2
Bankfull Mean Depth (ft)
0.4
0.4
0.2
0.2
0.8
0.6
1 0.6
1.0
0.5
0.5
1 0.5
0.6
Bankfull Max Depth (ft)
0.7
0.6
0.6
0.6
1.2
1.3
1.3
1.4
1.1
1.1
1.0
0.9
Bankfull Cross Sectional Area ft2
2.3
2.0
2.0
2.0
4.6
4.1
4.1
4.1
3.5
3.5
3.5
3.5
Bankfull Width/Depth Ratio
14.6
13.2
55.2
38.0
8.0
14.2
12.0
3.9
12.7
13.0
11.9
10.1
Bankfull Entrenchment Ratio
4.3
4.2
2.1
2.5
7.5
5.7
7.0
12.2
7.5
6.8
7.8
7.7
Bankfull Bank Height Ratio
1.0
1.0
<1
<1
1.0
1.0
1.0
1.1
1.0
1.0
1.1
1.1
d50 (mm)
N/a
0.8
21.0
0.8
N/a
0.6
1.4
0.2
N/a
0.8
21.0
0.8
Cross Section 4 Pool
Cross Section 5 Riffle
Cross Section
6 Rifflmm
arame ers
Base
MY1
MY2
MY3
MY4
MY5
MY+
Base
MY1
MY2
MY3
MY4
MY5
MY+
Base
MY1
MY2
MY3
MY4
MY5
MY+
Bankfull Width ft
14.2
14.3
14.2
19.8
7.9
7.3
8.4
7.9
6.7
7.0
8.6
7.7
Floodprone Width ft
68.0
68.0
68.0
68.0
59.0
59.0
49.0
59.1
49.0
49.0
49.0
49.0
Bankfull Mean Depth ft
0.6
0.6
0.6
0.4
0.5
0.5
0.3
0.3
1.6
1.6
1.3
1.4
Bankfull Max Depth ft
1.6
1.6
1 1.5
1.5
0.8
0.8
1 0.8
0.8
2.5
1 2.6
2.7
2.5
Bankfull Cross Sectional Area ft2
8.5
8.5
8.5
8.5
3.7
2.7
2.7
2.7
10.8
11.2
11.2
11.2
Bankfull Width/Depth Ratio
23.8
24.4
23.8
46.5
16.8
15.1
25.2
23.1
4.2
4.4
6.7
5.3
Bankfull Entrenchment Ratio
4.8
4.8
4.8
3.4
7.4
8.0
5.8
7.5
7.3
7.0
5.7
6.3
Bankfull Bank Height Ratio
1.0
1.0
1.1
<1
1.0
<1
1.0
1.0
1.0
1.0
1.0
1.0
d50 mm
N/a
0.6
1 1.4
1 0.2
N/a
0.8
1 21.0
0.8
N/a
0.8
21.0
0.8
Cross Section 7 Pool
Cross Section
8 Riffle
mm
arame ers
Base
MY1
MY2
MY3
MY4
MY5
MY+
Base
MY1
MY2
MY3
MY4
MY5
MY+
Base
MY1
MY2
MY3
MY4
MY5
MY+
Bankfull Width ft
13.1
12.7
10.7
8.0
4.3
4.6
4.9
8.6
Floodprone Width ft
44.0
44.0
44.0
44.0
24.0
20.0
23.0
23.0
Bankfull Mean Depth (ft)
1.2
1.3
1.2
1.5
0.4
0.5
0.4
0.2
Bankfull Max Depth (ft)
2.9
2.8
2.9
3.0
0.7
0.6
0.7
0.6
Bankfull Cross Sectional Area ft2
15.4
12.3
12.3
12.3
1.6
2.1
2.1
2.1
Bankfull Width/Depth Ratio
10.9
9.6
9.3
5.2
12.1
10.1
11.3
35.4
Bankfull Entrenchment Ratio
3.4
3.5
4.1
5.5
5.5
4.3
4.7
2.7
Bankfull Bank Height Ratio
1.0
1.0
1.0
1.0
1.0
1.2
1.0
<1
d50 (mm)
N/a
0.6
1.4
0.2
N/a
0.8
21
0.8
Table 7c. Monitoring Data - Stream Reach Summary
Lake Wendell Mitigation Project (NCDEQ DMS Project ID# 97081)
Parameter
Baseline
MY1
MY2
MY3
MY4
MY5
Reach ID: R1
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Profile
Riffle Length (ft)
11.3
31.2
Riffle Slope (ft/ft)
0.017
0.036
Pool Length (ft)
5.5
12.5
Pattern and Profile data will not typically be
collected unless visual data, dimensional data or
profile data indicate significant deviations from
baseline conditions
Pool Max depth (ft)
1.2
1.7
Pool Spacing (ft)l
7.7
1 33.3
Pattern
Channel Beltwidth (ft) 25 51
Radius of Curvature (ft) 11 36
Rc:Bankfull width (ft/ft) 2.1 4.2
Meander Wavelength (ft) 23 56
Meander Width Ratio 4.1 7.4
Additional Reach Parameters
Rosgen Classification
G5c
Sinuosity (ft)
1.05
Water Surface Slope (Channel) (ft/ft)
0.026
BF slope (ft/ft)
0.0265
Ri% / Ru% / P% / G% / S%
SC% / Sa% / G% / C% / B% / Be%
d16/d35/d50/d84/d95
2% of Reach with Eroding Banks
Channel Stability or Habitat Metric
Biological or Other
Parameter
Baseline
MY1
MY2
MY3
MY4
MY5
Reach ID: R2
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Profile
Riffle Length (ft)
9.9
33.3
Riffle Slope (ft/ft)
0.016
0.033
Pool Length (ft)
5.4
13.6
Pool Max depth (ft)
1.2
1.9
Pattern and Profile data will not typically be
collected unless visual data, dimensional data or
profile data indicate significant deviations from
baseline conditions
Pool Spacing (ft)
13
37.1
Pattern
Channel Beltwidth (ft) 25 47
Radius of Curvature (ft) 9.8 30.3
Rc:Bankfull width (ft/ft) 2.5 4.2
Meander Wavelength (ft) 29 17
Meander Width Ratio 4.4 7.9
Additional Reach Parameters
Rosgen Classification
C5
Sinuosity (ft)
1.15
Water Surface Slope (Channel) (ft/ft)
0.019
BF slope (ft/ft)
0.019
RI% / Ru% / P% / G% / S%
SC% / Sa% / G% / C% / B% / Be%
d16/d35/d50/d84/d95
Z% of Reach with Eroding Bank
Channel Stability or Habitat Metric
Biological or Other
Parameter
Baseline
MY1
MY2
MY3
MY4
MY5
Reach ID: R3
Min
IMax
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Profile
Riffle Length (ft)
10
30
Riffle Slope (ft/ft)
0.02
0.035
Pool Length (ft)
7
10
Pool Max depth (ft)
1.1
1.6
Pattern and Profile data will not typically be
collected unless visual data, dimensional data or
profile data indicate significant deviations from
baseline conditions
Pool Spacing (ft)
11.8
35.5
Pattern
Channel Beltwidth (ft) 30 46
Radius of Curvature (ft) 15 27
Re:Bankfull width (ft/ft) 2.5 4.2
Meander Wavelength (ft) 21 49
6mom Meander Width Ratio 5.1 7.6
Additional Reach Parameters
Rosgen Classification
C5
Sinuosity (ft)
1.17
Water Surface Slope (Channel) (ft/ft)
0.0153
BF slope (ft/ft)
0.016
RI% / Ru% / P% / G% / S%
SC% / Sa% / G% / C% / B% / Be%
d16/d35/d50/d84/d95
Z% of Reach with Eroding Bank
Channel Stability or Habitat Metric
Biological or Other
Parameter
Baseline
MY1
MY2
MY3
MY4
MY5
Reach ID: R4
Min
IMax
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Profile
Riffle Length (ft)
9.5
21.9
Riffle Slope (ft/ft)
0.013
0.022
Pool Length (ft)
6.1
8.5
Pool Max depth (ft)
2
2.2
Pattern and Profile data will not typically be
collected unless visual data, dimensional data or
profile data indicate significant deviations from
baseline conditions
Pool Spacing (ft)
18
1 44
1
Pattern
Channel Beltwidth (ft) 29 53
Radius of Curvature (ft) 12 20
Rc:Bankfull width (ft/ft) 1.9 3.2
Meander Wavelength (ft) 52 77
6om Meander Width Ratiol 4.7 1 8.5
Additional Reach Parameters
Rosgen Classification
E5
Sinuosity (ft)
1.25
Water Surface Slope (Channel) (ft/ft)
0.014
BF slope (ft/ft)
0.015
Ri% / Ru% / P% / G% / S%
SC% / Sa% / G% / C% / B% / Be%
d16/d35/d50/d84/d95
2% of Reach with Eroding Bank
Channel Stability or Habitat Metric
Biological or Other
Parameter
Baseline
MY1
MY2
MY3
MY4
MY5
Reach ID: R5
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Profile
Riffle Length (ft)
10.3
37
Riffle Slope (ft/ft)
0.017
0.027
Pool Length (ft)
4.7
8.5
Pool Max depth (ft)
1.1
1.5
Pattern and Profile data will not typically be
collected unless visual data, dimensional data or
profile data indicate significant deviations from
baseline conditions
Pool Spacing (ft)
8.7
33.3
Pattern
Channel Beltwidth (ft) -
Radius of Curvature (ft)
Rc:Bankfull width (ft/ft)
Meander Wavelength (ft)
Meander Width Ratio
Additional Reach Parameters
Rosgen Classification
B5
Sinuosity (ft)
1.06
Water Surface Slope (Channel) (ft/ft)
0.025
BF slope (ft/ft)
0.024
3Ri% / Ru% / P% / G% / S%
3SC%/Sa%/G%/C%/B%/Be%
3d16 / d35 / d50 / d84 / d95
Z% of Reach with Eroding Banks
Channel Stability or Habitat Metric
Biological or Other
Appendix E — Hydrologic Data
FJ
Lake Wendell Mitigation Project
Table 8. Verification
of Flow Events
Date of Data
Collection
Date of Occurrence
Nlethotl
Greater than Bankfull (BM) or Qgs
Q2`0.66 Sta O
Photo/ Notes
Height above bankfull
Re uirement Met
8/16/2018
8/3/2018
Crest Gauge
BM, 3"above FP elevation
Photos
No
9/17/2018
9/16-9/17/2018
Oberserved visual indicators(wrack lines)
of stage after storm
Bkf
Photos
No
11/21/2018
9/16-9/17/2018
Crest Gauge
Bkf
Photos
No
7/26/2019
7/24/2019
Crest Gauge
Bkf
Photos
.325ft
No
8/20/2019
uknown
Crest Gauge
Bkf
Photos
.45ft
Yes
2/7/2020
uknown
Crest Gauge
Bkf
Photos
.6ft
Yes
9/3012020
uknown
Crest Gauge
Bkf
Photos
1.2 ft
Yes
Figure 4a: Gauge Graphs (pressure transducers)
Lake Wendell Groundwater Gauge 1 (Reference Wetland)
0
4
73 Days 32.16% of the Growing Season
-2
3.5
-4
t
3
c
-6
t
2.5
8V�A
a�
—
10
2
d
12
c
3
1.5 2.
-a
—
-14
0
0
1
(D 16
0.5
18
I
ILIAM
JU.1.40
-20
0
N
0
N
0
N
0 0 0
N N N
0
N
N
N
N o
N N
O
N
o O
N N
o
N
N N N N
N N N N
o O o
N N N
O
N
O
N
O
N
O O O
N N N
O
N
O
ry
O O
N N
O
N
O O
N N
O
N
O O O O
N N N N
O O O
N N N
N
IUD
OO
[_fi n N [gyp
Q�7
r_n n
r_-I
0_0
[�V
[gyp OO M n
OO 0_0
-1
__
rl
__
_q
__ __ __ �
N N rn ro
�
:IPI
-_
ury
CO �
CD
F
Il- 1• 00 0o
Q7 67 rl
iiiiiiiiiiiiiiiiiiiiiDailyRainfall
Groundwater
Depth
(inches)
Ground
Level
12" Below Surface
Growing Season
Lake Wendell R5 Flow Gauge
2.5
165 Days of Consecutive Flaw 1/1/2020 - 6/13/2020
2
0
0,5
■
■[ J
.-. I
O
CD
CD
CD
CD
CD
CD
CD
CD
CD
CD
CD
CD
CD
O
O O
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N N
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O O
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N N
N
[gyp
OO
r_n
n
N
[gyp
6�7
M
n
r_-I
W
N
[gyp
OO
r_n
n
OO
0_0
r-i
r-i
N
N
m
m
In
In
co
n
n
n
oo
0o
rn
o
m
Rainfall Stream Depth Flow Limit
4
3.5
3 w
0.5
0
Figure 4b: Groundwater Gauge Data
Lake Wendell Mitigation Project (NCDEQ DMS Project ID# 97081)
MY3 2020
Max Consecutive Hydroperiod: Saturation within 12 Inches of Soil
Surface (Percent of Growing Season)
Monitoring Gauge Name
WETS Station: 317994 - Smithfield Growing Season: 4/6-11/4 (227
da s
2018
1 2019
1 2020
1 2021
2022
2023
2024
Mean
Lake Wendell Reference Wetland
95.20%
153.52%
132.16%
Annual Precip Total NA
WETS 30th Percentile 42.7
WETS 70th Percentile 51.8
Normal Y
- Impoundment
X% above or below success criteria
N/A Not available - Gage pulled or yet to be installed by this phase
M Malfunction, Data Overwritten or Unretrievable
January -November
Figure 5: Monthly Rainfall Data
Lake Wendell Mitigation Project (NCDEQ DMS Project ID# 97081 )
MY3 2020
30-70 Percentile Rainfall Graph
Clayton, NC (CLAY - Central Crops Research Station)
14
12
10
c
8
0
'a
u 6
a
4 -
2
0
Jan-20 Feb-20 Mar-20 Apr-20 May-20 Jun-20 Jul-20 Aug-20 Sep-20 Oct-20 Nov-20 Dec-20
Date
Observed Rainfall 30th Percentile 70th Percentile
*30th and 70th percentile rainfall data collected from weather station CLAY - Central Crops Research Station in Clayton, NC.
**Incomplete Month
Month
30%
70%
Observed
Jan-20
2.72
4.62
5.87
Feb-20
2.26
4.09
5.67
Mar-20
3.30
5.03
3.34
Apr-20
2.16
4.20
4.56
May-20
2.65
4.58
3.49
Jun-20
2.41
5.00
6.26
Jul-20
3.88
6.36
5.26
Aug-20
3.17
6.03
12.75
Sep-20
2.93
6.12
7.49
Oct-20
2.08
4.08
2.13
Nov-20
2.05
4.23
6.19
Dec-20
2.57
5.54
**
Monitoring Report —Year 3
FINAL VERSION
Lake Wendell Mitigation Project (Riparian Buffer Mitigation)
Calendar Year of Data Collection: 2020
NCDEQ DIMS Project Identification # 97081
NCDEQ DIMS Contract # 6826
Neuse River Basin (Cataloging Unit 03020201)
USACE Action ID Number: SAW-2016-00876
NCDEQ DWR Project # 2016-0385
Johnston County, NC
Contracted Under RFP # 16-006477
Data Collection Period: September to October 2020
Submission Date: December 11, 2020
Prepared for:
KI-c'
Environmental
QaadYy
North Carolina Department of Environmental Quality
Division of Mitigation Services
1652 Mail Service Center
Raleigh, NC 27699-1652
Prepared by:
WATER & LAND SOLUTIONS
7721 SIX FORKS ROAD, SUITE 130, RALEIGH, NC 27615
(9191 614 - 5111 1 waterlandsolutions.com
Table of Contents
1 Project Summary................................................................................................................................... 1
2 Project Background............................................................................................................................... 1
2.1 Project Location, Setting, and Existing Conditions........................................................................ 1
2.2 Mitigation Project Goals and Objectives....................................................................................... 1
2.3 Project History, Contacts, and Timeframe....................................................................................2
3 Project Mitigation Components............................................................................................................ 2
3.1 Riparian Buffer Mitigation Types and Approaches....................................................................... 2
3.1.1 Tree and Shrub Planting Approaches.................................................................................... 3
3.1.2 Temporary and Permanent Seeding Approaches................................................................. 3
3.1.3 Invasive Species Vegetation Treatment................................................................................ 3
4 Performance Standards........................................................................................................................ 3
4.1 Vegetation.....................................................................................................................................4
5 Monitoring Year 3 Assessment and Results..........................................................................................4
5.1 Vegetation.....................................................................................................................................4
6 References............................................................................................................................................ 5
LIST OF APPENDICES
Appendix A Background Tables
Table 1 Project Attributes
Table 2 Project Areas and Asset Summary
Table 3 Project Contacts
Appendix B Visual Assessment Data
Figure 1 Current Condition Plan View (CCPV)
Table 4 Vegetation Condition Assessment
Photos Vegetation Plot Photographs
Photos Vegetation Problem Areas Photographs
Appendix C Vegetation Plot Data
Table 5 Planted and Total Stem Counts
Appendix D NC DWR Correspondence and Approvals
Water & Land Solutions
0
1 Project Summary
Water and Land Solutions, LLC (WLS) completed the construction and planting of the Lake Wendell
Mitigation Project (Project) full -delivery project for the North Carolina Department of Environmental
Quality (NCDEQ), Division of Mitigation Services (DMS) in March 2018. The Project is located in Johnston
County, North Carolina between the Community of Archer Lodge and the Town of Wendell at 35.73739°,
-78.3538°. The Project site is located in the NCDEQ Sub -basin 03-04-06, in the Upper Buffalo Creek Sub -
watershed 030202011502.
The Project involved the restoration, enhancement, preservation, and permanent protection of five
stream reaches (R1, R2, R3, R4, and R5) and their riparian buffers, totaling 4,269 linear feet of streams
and 490,477 square feet of riparian buffers. Monitoring Year 3 (MY3) monitoring activities occurred
between September and October 2020 (Table 2). This report presents the data for the third year of
monitoring (MY3). The Project meets the MY3 success criteria for vegetation. Based on these results, the
Project is expected to meet the Monitoring Year 4 (MY4) success criteria in 2021.
2 Project Background
2.1 Project Location, Setting, and Existing Conditions
The Project site is located in the Upper Buffalo Creek Sub -watershed 030202011502 study area of the
Neuse 01 Regional Watershed Plan, in the Wake -Johnston Collaborative Local Watershed Plan, and in
Targeted Local Watershed 03020201180050.
The catchment area is 102 acres and has an impervious cover less than one percent. The dominant
surrounding land uses are agriculture and mixed forest. Prior to construction, livestock had access to all
Project streams, except R4, and the riparian buffers were less than 50 feet wide.
2.2 Mitigation Project Goals and Objectives
The following riparian buffer mitigation site -specific goals were developed:
• Restore and protect riparian buffer functions and habitat connectivity in perpetuity by recording
a permanent conservation easement,
• Implement agricultural BMPs to reduce nonpoint source inputs to receiving waters.
To accomplish these site -specific goals, the following objectives will be measured and included with the
performance standards to document overall project success:
• Increase native species riparian buffer vegetation density/composition along streambank and
floodplain areas that meet requirements of a minimum 50-foot-wide and 260 stems/acre after
monitoring year 5.
• Prevent cattle from accessing the conservation easement boundary by installing permanent
fencing and reducing fecal coliform bacteria from the pre -restoration levels.
Lake Wendell Mitigation Project (Riparian Buffer Mitigation)
FINAL Monitoring Report Year 3 Page 1
Water & Land Solutions 4
2.3 Project History, Contacts, and Tirnefrarne
The Project will provide riparian buffer mitigation credits in accordance with North Carolina
Administrative Code (NCAC), "Consolidated Buffer Mitigation Rule", Rule 15A NCAC 02B .0295, effective
November 1, 2015. Riparian buffer mitigation site viability was confirmed by DWRs April 28, 2016 letter
entitled "Site Viability for Buffer Mitigation & Nutrient Offset — Lake Wendell Located Near 2869 Wendell
Road, Wendell, NC, Johnston County'. The referenced site viability letter included a determination by
DWR that Project Reaches R1, R2, R3 and R4 were either intermittent or perennial. A separate request
for Stream Origin/Buffer Applicability Determination for Potential Mitigation for Project Reach R5 was
submitted to DWR on May 18, 2017, as required under the referenced site viability letter. On June 1, 2017
DWR performed the requested determination and Reach R5 was determined to be intermittent, as
communicated in the DWR June 8, 2017 letter entitled "On -Site Stream Determination for Applicability to
the Neuse Riparian Buffer Rules and Water Quality Standards (15A NCAC 02B.0233)", therefore confirming
Reach R5's eligibility for riparian buffer mitigation. See Appendix D for DWR correspondence and approval
letters.
The final mitigation plan and PCN were submitted to DMS August 25, 2017 for submission to DWR and
the NCIRT. The Section 404 General (Regional and Nationwide) Permit Verification was issued October 5,
2017. Project construction started on November 13, 2017 and mitigation site earthwork was completed
on March 13, 2018, by RiverWorks Construction. Mitigation site planting was completed on March 30,
2018, by RiverWorks Construction. Trueline Surveying, PC completed the as -built survey in June 2018.
WLS completed the installation of baseline monitoring devices on April 19, 2018 and the installation of
survey monumentation and conservation easement boundary marking on June 7, 2018. MY1 was
completed on November 24t", 2019 and submitted December 4t", 2019. Monitoring Year 2 data collection
was completed from June until October 29t", 2019. Monitoring Year 3 data collection was completed from
September — October 15t", 2020.
The project background and attribute summary are presented in Table 1. Refer to Figure 1 and Table 2 for
the project areas and buffer asset information. Relevant project contact information is presented in Table
3.
3 Project Mitigation Components
3.1 Riparian Buffer Mitigation Types and Approaches
Riparian buffer mitigation included restoring, enhancing, and preserving the riparian buffer functions and
corridor habitat. The project included planting to re-establish a native species vegetation riparian buffer
corridor, which extended a minimum of 50 feet from the top of the streambanks along each of the project
reaches, as well as permanently protecting those buffers with a conservation easement. Many areas of
the conservation easement had riparian buffer widths greater than 50 feet established along one or both
streambanks to provide additional functional uplift. The only exception is at the upstream end of Reach
R1, where the width of the proposed left riparian buffer varies between 20 feet and 29 feet from the left
top of bank. This narrow area of proposed riparian buffer is due to the site constraint caused by an existing
residential structure. For project reaches proposed for restoration and enhancement, the riparian buffers
were restored through reforestation of the entire conservation easement with native species riparian
buffer vegetation (Table 5). For project reach sections proposed for preservation, the existing riparian
Lake Wendell Mitigation Project (Riparian Buffer Mitigation)
FINAL Monitoring Report Year 3 Page 2
Water & Land Solutions 4
buffers are permanently protected via the recorded conservation easement. Additionally, permanent
fencing was installed along with alternative watering systems to exclude livestock from the restored
riparian buffer and conservation easement areas. The permanent fencing system consisting of woven
wire fencing was installed to NRCS technical standards in the pasture areas along and outside of the
northern conservation easement boundaries of Reaches R1, R2, and R3. Table 1 (Appendix A) provides a
summary of the project components.
3.1.1 Tree and Shrub Planting Approaches
The riparian buffer planting zones for the project included the streambanks, floodplain, riparian wetland,
and upland transitional areas. Plantings were conducted using native species bare -root trees and shrubs,
live stakes, and seedlings that were generally planted at a total target density of 680 stems per acre. WLS
implemented a riparian buffer planting strategy that includes a combination of overstory, or canopy, and
understory species. The site planting strategy also included early successional, as well as climax species.
The vegetation selections were mixed throughout the project planting areas so that the early successional
species will give way to climax species as they mature over time.
3.1.2 Temporary and Permanent Seeding Approaches
Permanent seed mixtures of native species herbaceous vegetation and temporary herbaceous vegetation
seed mixtures were applied to all disturbed areas of the project site. Temporary and permanent seeding
were conducted simultaneously at all disturbed areas of the site during construction utilizing mechanical
broadcast spreaders. The as -built re -vegetation plan lists the utilized species, mixtures, and application
rates for permanent seeding.
3.1.3 Invasive Species Vegetation Treatment
During the project construction, invasive species exotic vegetation was either mechanically removed or
chemically treated both to control its presence and reduce its spread within the conservation easement
areas. During MY3 an area of concern was observed along R1 buffer as shown on the Figure 1. This area
was utilized as a temporary staging area during construction and contains invasive species vegetation
(kudzu) along the right buffer. This area was managed twice during MY3, with kudzu crown removal
happening during the summer and foliar spray of the limited remaining stems in October using a 3 percent
solution of Garlon 3A (see table below for treatments). Following these treatments, the percent cover of
kudzu was reduced to approximately 5%. WLS will continue to monitor and treat the kudzu during MY4.
Kudzu foliar spray and cut
August 15, 2019
Kudzu foliar spray
September 24, 2019
Kudzu crown removal (hand -digging)
March 18, 2020
Kudzu foliar spray
October 7, 2020
4 Performance Standards
The applied success criteria for the Project will follow necessary performance standards and monitoring
protocols presented in final approved mitigation plan. Annual monitoring and semi-annual site visits will
be conducted to assess the condition of the project throughout the monitoring period. Monitoring
Lake Wendell Mitigation Project (Riparian Buffer Mitigation)
FINAL Monitoring Report Year 3 Page 3
Water & Land Solutions 4
activities will be conducted for a period of five years. Specific success criteria components and evaluation
methods are described below.
4.1 Vegetation
Measurements of the final vegetative restoration success for the project will be achieving a density of not
less than 260, five -year -old planted stems per acre in Year 5 of monitoring. This final performance criteria
shall include a minimum of four native hardwood tree species or four native hardwood tree and native
shrub species, where no one species is greater than 50 percent of the stems. Native hardwood tree and
native shrub volunteer species will be included to meet the final performance criteria of 260 stems per
acre. Volunteers species will only be counted toward success if they were included in the approved
planting plan and if they are surviving for at least two years. In addition, diffuse flow of runoff shall be
maintained in the riparian buffer areas.
5 Monitoring Year 3 Assessment and Results
Annual monitoring was conducted during MY3 in accordance with the monitoring plan as described in the
approved mitigation plan and was intended to document the site improvements based on restoration
potential, catchment health, ecological stressors, and overall constraints. All the monitoring device
locations are depicted on CCPV (Figure 1) and MY3 monitoring data results are listed in the appendices.
The Project meets the MY3 success criteria for vegetation.
5.1 Vegetation
Vegetation monitoring for MY3 was conducted utilizing the seven vegetation monitoring plots, with
monitoring conducted in accordance with the CVS-EEP Level I & II Monitoring Protocol (CVS, 2008) and
DMS Stream and Wetland Monitoring Guidelines (DMS, 2017). See Figure 1 in Appendix B for the
vegetation monitoring plot locations. The surviving planted stems include a minimum of four native
hardwood tree species or four native hardwood tree and native shrub species, where no one species is
greater than 50 percent of the stems. Summary data and photographs of each plot can be found in
Appendix 3.
The MY3 vegetation monitoring was also conducted utilizing visual assessment along all the Project
stream reaches. The overall results of the visual assessment did not indicate any negative changes to the
existing vegetation community. An area of encroachment approximately 0.008 acres was found along R1,
see Figure 1. This area has been mowed by the adjacent homeowner and is currently vegetated with
fescue. Management of this area has already begun and includes additional signage and a physical barrier
(horse tape) to delineate the easement boundary and discourage further mowing. During MY4 trees will
be planted in this area to ensure tree cover is achieved. Trees planted will be from the approved list in the
mitigation plan. Additionally, the visual monitoring confirmed that diffuse flow of runoff is being
maintained in the riparian buffer areas.
Lake Wendell Mitigation Project (Riparian Buffer Mitigation)
FINAL Monitoring Report Year 3 Page 4
Water & Land Solutions
0
6 References
Lee, M., Peet R., Roberts, S., Wentworth, T. CVS-NCEEP Protocol for Recording Vegetation, Version 4.1,
2007.
North Carolina Department of Environmental Quality, Division of Mitigation Services, Wildlands
Engineering, Inc. 2015. Neuse 01 Regional Watershed Plan Phase II. Raleigh, NC.
North Carolina Department of Environmental Quality, Division of Mitigation Services, 2017. Annual
Report Format, Data Requirements, and Content Guidance. Raleigh, NC.
Schafale, M. P., and A. S. Weakley. 1990. Classification of the natural communities of North Carolina,
third approximation. North Carolina Natural Heritage Program. NCDENR Division of Parks and
Recreation. Raleigh, NC.
United States Army Corps of Engineers. 1987. Corps of Engineers Wetlands Delineation Manual.
Technical Report Y-87-1. Environmental Laboratory. US Army Engineer Waterways Experiment
Station. Vicksburg, MS.
1997. Corps of Engineers Wetlands Research Program. Technical Note VN-RS-4.1. Environmental
Laboratory. U.S. Army Engineer Waterways Experiment Station. Vicksburg, MS.
_. 2003. Stream Mitigation Guidelines, April 2003, U.S. Army Corps of Engineers. Wilmington District.
Water and Land Solutions, LLC (2017). Lake Wendell Stream and Riparian Buffer Mitigation Plan.
NCDMS, Raleigh, NC.
Lake Wendell Mitigation Project (Riparian Buffer Mitigation)
FINAL Monitoring Report Year 3 Page 5
Appendices
FJ
Lake Wendell Mitigation Project
Appendix A — Background Tables
FJ
Lake Wendell Mitigation Project
Table 1. Buffer Project Attributes
Project Name
Lake Wendell Mitigation Project
Hydrologic Unit Code
03020201
River Basin
Neuse
Geographic Location (Lat, Long)
35.7373910 N,-78.3538050 W
Site Protection Instrument (DB, PG)
85,148
Total Credits (BMU)
354,404.00
Types of Credits
Riparian Buffer
Mitigation Plan Date
Aug-18
Initial Planting Date
Mar-18
Baseline Report Date
Nov-18
MY1 Report Date
Dec-18
MY2 Report Date
Nov-19
MY3 Report Date
Dec-20
MY4 Report Date
MY5 Report Date
Table 2. Buffer Project Areas and Assets: Lake Wendell
If Converted to Nutrient Offset
RIPARIAN BUFFER (15A NCAC 0213.0295)
Location
Jurisdictional Streams
Restoration Type
Reach ID/
Component
P
Buffer Width
( ft )
Total Area
sf
( )
Creditable
( )*
Area sf
Initial
Credit
Ratio (x:1)
Y Full Credit
Final Credit Ratio
(x:1 )
Riparian Buffer
Credits BMU
( )
Convertible
to Nutrient
Offset Yes
(
or No)
Nutrient
Offset: N
(Ibs)
Nutrient
Offset: P Ibs)
(
20-29
75%
1.33333
-
-
Restoration
1
Restoration
0-100
342,525
342,525
100%
1.00000
342,525.000
Yes
17,873.412
N/A
101-200
33%
3.03030
-
-
-
Rural or
Urban
Subject or Nonsubject
Enhancement
20-29
2
75%
2.66667
-
Enh
Enh &Cattle Ex.
0-100
44,852
44,852
100%
2.00000
22,426.000
No
101-200
33%
6.06061
-
-
-
SUBTOTALS
387,377
364,951.0061
17,873.412
-
ELIGIBLE PRESERVATION AREA 1 1 129,126
Location
Jurisdictional Streams
Restoration Type
Reach ID/
Component
Buffer Width
(ft)
Creditable
Area (sf)*
Initial
Credit
Ratio (x:1)
% Full Credit
Final Credit Ratio
(x:l)
Riparian Buffer
Credits (BMU)
Rural
Subject
Preservation
20-29
10
75%
13.33333
-
Preservation
0-100
104,103
104,103
100%
10.00000
10,410.300
101-200
33%
30.30303
-
Nonsubject
20-29
5
75%
6.66667
0-100
100%
5.00000
101-200
33%
15.15152
-
Urban
Subject or Nonsubject
20-29
3
75%
4.00000
0-100
100%
3.00000
101-200
33%
9.09091
-
SUBTOTALSI 1 104,103 10,410.300
TOTALS1 1 491,480 375,361.300
Table 3. Project Contacts
Lake Wendell Mitigation Project (NCDEQ DMS Project ID# 97081)
Mitigation Provider
Water & Land Solutions, LLC
7721 Six Forks Road, Suite 130 Raleigh, NC 27615
Primary Promect POC
Catherine Manner Phone: 571-643-3165
Construction Contractor
RiverWorks Construction
114 W. Main Street, Suite 106, Clayton, NC 27520
Primary Promect POC
Bill Wri ht Phone: 919-590-5193
Survey Contractor (Existing
WithersRavenel
Condition Surveys)
115 MacKenan Drive, Cary, NC 27511
Primary Project POC
Marshall Wight, PLS Phone: 919-469-3340
Survey Contractor (Conservation
True Line Surveying, PC
Easement, Construction and As-
Builts Survevs)
205 West Main Street, Clayton, NC 27520
Primary Promect POC
Curk T. Lane PLS 919-359-0427
Planting Contractor
RiverWorks Construction
114 W. Main Street, Suite 106, Clayton, NC 27520
Primary Project POC
Bill Wright Phone: 919-590-5193
Seeding Contractor
RiverWorks Construction
114 W. Main Street, Suite 106, Clayton, NC 27520
Primary Project POC
Bill Wri ht Phone: 919-590-5193
Seed Mix Sources
Green Resource
5204 Highgreen Ct., Colfax, NC 27235
Rodney Montgomery Phone: 336-215-3458
Nursery Stock Suppliers
Foggy Mountain Nursery (Live Stakes)
797 Helton Creek Rd, Lansing, NC 28643
Glenn Sullivan Phone: 336-977-2958
Dykes & Son Nursery (Bare Root Stock)
825 Maude Etter Rd, Mcminnville, Tn 37110
Jeff Dykes Phone: 931-668-8833
Monitoring Performers
Water & Land Solutions, LLC
7721 Six Forks Road, Suite 130 Raleigh, NC 27615
Stream Monitoring POC
Emily Dunnigan Phone: 269-908-6306
Ve etation Monitoring POC
lEmily Dunni an Phone: 269-908-6306
Appendix B —Visual Assessment Data
FJ
Lake Wendell Mitigation Project
Legend
_ ] Conservation Easement
— Stream
--- Top of Streambank
Kudzu Area (0.13 acres)
Encroachment (0.008 acres)
o CVS Plot Origin
CVS Plots
Success Criteria Met
Success Criteria Not Met
Buffer Mitigation Types
Preservation
Enhancement
Restoration
rt
O
O O o O+
%
O O+ M
0
o✓,�.^
O
O
+ no W
n 0
+ +
00
O
O�
O
4
JCu
R4
WATER &LAND'"
SOLUTIONS
r
1� c
Access point:
35.73764°
78.34884°
o oJr O O o o+
+ polt
ON,O V (h N +
N �� �� O O J .O z0
N I� (p O ' O
_ l!� V O O 0 _ O� �_
�-(14 N��� (j N + O, 00 N O+O J
.t4-�� ��� N o O
4�-
o R1
3`-_ O
fi
R2
Encroachment
R5
Lake Wendell Mitigation Project
Johnston County, North Carolina
r*
N "
Aerial: Google Earth Winter 2019
NCDMS Contract No. 6826 Riparian Buffer FIGURE
NCDMS Project No. 97081 Mitigation Plan View
December 2020
MY3 NAD 1983 2011 State Plane
North Carolina FIPS 3200 FT US
Table 4. Vegetation Condition Assessment
Project Lake Wendell Mitigation Project (NCDEQ DMS Project ID# 97081)
Planted Acreage 8.9
Mapping
CCPV
Number of
Combined
% of Planted
Ve etation Cateciory
Definitions
Threshold
Depiction
Polvaons
Acrea a
Acreage
1. Bare Areas
Very limited cover of both woody and herbaceous material.
1 acre
Solid light blue
0
0.00
0.0%
Pattern and
2. Low Stem Density Areas
Woody stem densities clearly below target levels based on MY3, 4, or 5 stem count criteria.
0.1 acres
0
0.00
0.0%
Color
Total
0
0.00
0.0%
Pattern and
3. Areas of Poor Growth Rates or Vigor
Areas with woody stems of a size class that are obviously small given the monitoring year.
0.25 acres
0
0.00
0.0%
Color
Cumulative Total
0
0.00
0.0%
Easement Acreage 12
Vegetation Category
Definitions
Mapping
Threshold
CCPV
Depiction
Number of
Polygons
Combined
Acrea a
% of Easement
Acreacie
4. Invasive Areas of Concern
Areas or points (if too small to render as polygons at map scale).
1000 SF
orange hatched
1
0.13
1.1 %
5. Easement Encroachment Areas
Areas or points (if too small to render as polygons at map scale).
none
yellow hatched
1
0.01
0.1 %
Aft..
I., Mm''
Veg Plot 1, November 5, 2018 (MY-01)
7
7
'VI
k 14
7,
Veg Plot 2, April 27, 2018 (MY-00)
W%. 4 MM
10. 14.2020
Veg Plot 1, October 14, 2020 (MY-03)
akw
-
L NI-
Veg Plot 2, October 14, 2020 (MY-03)
Veg Plot 3, November 5, 2018 (MY-01)
i
Veg Plot 3, October 14, 2020 (MY-03)
.'
q0p
g Rj if
,•
Veg Plot 4, October 14, 2020 (MY-03)
h
_ L
k.
t 4
Veg Plot 5, April 13, 2018 (MY-00)
.R
''f
r•X�r
w �
Art
� r f
1
Veg Plot 5, October 14, 2020 (MY-03)
ems!
/ ` II
Veg Plot 6, October 14, 2020 (MY-03)
Veg Plot 7, April 13, 2018 (MY-00)
I'y�.f .M R�' •x d. a�
Veg Plot 7, October 14, 2020 (MY-03)
Kudzu Problem Area, October 22, 2020 (MY-03)
CIA,
�'Rc- F• dl t
r
v
0
Encroachment Area, October 7, 2020 (MY-03)
76S r MI [_ i ,., f , 2' .111 yy
pp �• r#
R �• •,� i'4 t� spy, -.Jill
AF
\ IONI ' , ..if
Kudzu Problem Area, October 22, 2020 (MY-03)
IF`
v• 7
A.,.
d
�3„3� a} ; �b �'itV I ,� rl �'y'j•�� / .:fi �.) ' yj1
�:^{..., t � �y'►�d �I 1Vr �� gyp:
Ag 1
4
Encroachment Area, October 7, 2020 (MY-03)
Appendix C — Vegetation Plot Data
FJ
Lake Wendell Mitigation Project
Table 5: CVS: Lake Wendell Mitigation Project
Planted and Total Stem Counts
Current Plot Data (MY3 2020)
Annual
Means
Scientific Name
Common Name
Species Type
001-01-0001
001-01-0002
001-01-0003
001-01-0004
001-01-0005
001-01-0006
001-01-0007
MY3 (2020)
MY2 (2019)
MY1(2018)
MYO (2018)
PnoLS
P-all
T
PnoLS
P-all
T
PnoLS
P-all
T
PnoLS
P-all
T
PnoLS
P-all
T
PnoLS
P-all
T
PnoLS
P-all
T
PnoLS
P-all
IT
PnoLS
P-all
T
PnoLS
P-all
T
PnoLS
P-all
T
Acer negundo
Tree
1
Acer rubrum
Tree
19
10
2
2
2
30
2
2
5
2
2
2
6
6
68
6
6
25
6
6
62
7
7
7
Alnus serrulata
Tag Alder, Smooth Aldi
Shrub Tree
1
1
1
1
1
1
1
1
1
3
3
3
3
3
3
2
2
2
3
3
3
Betula nigra
River Birch, Red Birch
Tree
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
8
8
8
11
11
11
9
9
9
12
12
12
Carpinus caroliniana
Shrub Tree
1
1
1
2
2
2
3
3
3
3
3
3
4
4
4
5
5
5
Cornus amomum
Silky Dogwood
Shrub Tree
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
3
3
3
Diospyros virginiana
American Persimmon,
Tree
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Fraxinus pennsylvanica
Green Ash, Red Ash
Tree
1
1
1
11
1
1
1
11
1
11
1
1
4
4
4
4
4
4
4
4
4
4
4
4
Ilex verticillata
Winterberry
Shrub Tree
11
1
1
Lindera benzoin
Northern Spicebush
Shrub Tree
8
8
8
Liquidambar styraciflua
Sweet Gum, Red Gum
Tree
4
5
5
1
1
16
8
9
Liriodendron tulipifera
Tree
1
1
2
2
2
2
1
1
1
1
1
1
2
2
2
7
7
8
8
8
8
13
13
13
27
27
27
Magnolia virginiana
Shrub Tree
11
1
1
1
1
1
2
2
2
11
1
1
1
11
1
1
1
1
7
7
7
7
7
7
8
8
8
8
8
8
Pinus taeda
Loblolly Pine, Old Field
Tree
3
9
12
Platanus occidentalis
Sycamore, Plane -tree
Tree
1
1
1
1
1
1
1
1
1
4
4
4
1
1
1
31
3
3
11
11
11
11
11
11
12
12
12
18
18
18
Prunus serotina
Shrub Tree
1
1
2
Quercus michauxii
Basket Oak, Swamp C
Tree
2
2
2
4
4
4
1
1
1
1
1
1
8
8
8
7
7
7
7
7
7
7
7
7
Quercus nigra
Water Oak, Paddle Oa
Tree
2
2
2
1
1
1
3
3
3
4
4
4
4
4
4
9
9
9
Quercus phellos
Willow Oak
Tree
4
4
4
3
3
3
3
3
3
1
1
1
11
11
11
9
9
9
10
10
10
11
11
11
Rosa palustris
Swamp Rose
Shrub Vine
1
Salix nigra
Black Willow
Tree
1
Stem count
size (ares)
size (ACRES)
Species count
Stems per ACRE
8
8
32
7
7
12
12
12
27
13
13
15
13
13
47
12
12
24
10
10
10
75
75
167
77
77
107
83
83
150
125
125
125
1
1
1
1
1
1
1
7
7
7
7
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.17
0.17
0.17
0.17
7
7
9
6
6
7
7
7
9
6
6
8
7
7
10
8
8
9
6
6
6
13
13
16
13
13
16
13
13
16
15
15
15
323.7
323.7
1295
283.3
283.3
485.6
485.6
485.E
1093
526.1
526.1
607
526.1
526.1
1902
485.E
485.6
971.2
404.7
404.7
404.7
433.6
433.6
965.5
445.2
445.2
618.6
479.8
479.8
867.2
722.7
722.7
722.7
FJ
Appendix D — DWR Correspondence and Approval
Lake Wendell Mitigation Project
Wa ter Resources
ENVIRONMENTAL ❑UADTY
April 28, 21016
Scott Hurst
Water & Land Solutions, LLC
l ] 030 Raven Ridge Rd, Suite 119
Raleigh, NC 27614
(via electronic mail)
PAT MCCRORY
Governor
DONALD R. VAN DE.R VAART
soerela q
S. JAY ZIMMERMAN
Director
DWR Project #: 2016-0385
Re: Site Viability for Buffer Mitigation & Nutrient Offset — Lake Wendell
Located near 2869 Wendell Rd, Wendell, NC
Johnston County
Dear Mr. Hunt,
On April 8, 2016, Katie Merritt, with the Division of Water Resources (DWR), assisted you and
others from Water & Land Solutions, LLC at the proposed Lake Wendell Mitigation Site (Site)
in Wendell, NC. The Site is located in the Neuse River Basin within the 8-digit Hydrologic Unit
Code 03020201. The Site is being proposed as part of a full -delivery stream restoration project
for the Division of Mitigation Services (RFP #16-006477). The Interagency Review Team (IRT)
was also present onsite. At your request, Ms. Merritt performed a site assessment of features onsite
to determine suitability for buffer and nutrient offset mitigation. Features are more accurately shown
in the attached maps signed by Ms. Merritt on April 20, 2016. If approved, mitigating this site could
provide stream mitigation credits, riparian buffer credits and/or nutrient offset credits.
Ms. Merritt's evaluation of features from Top of Bank JOB) out to 200' for buffer and nutrient
offset mitigation pursuant to Rule 15A NCAC 02B .0295 (effective November 1, 2015 ) and Rule
15A NCAC 02B .0240 is provided in the table below:
Feature
Classification
'Subiect
Adjacent Landuses
Buffer
2Nutrient
Mitiration Tyne/Comments
credit
to Buffer
Offset Viable
Rule
at 2,273
Viable
Ibs acre
R1 (above
Modified
Yes
narrow buffer of
Yes"
No
Enhancement per 15A NCAC 028
pipe)
Natural
Mixed native
0295 (b)(4) in entire 50' from TOS
Stream
hardwood & pine
forest
R1 (piped
Piped stream
Yes"
managed lawn
Yes"
No
Restoration
portion —
fence line)
RI (below
Modified
Yes
pasture actively
Yes
Yes
Restoration
fence line —
natural
grazed by rattle
R5
stream
confluence)
Ssale of North Carolina tnyiTo 1n7Cn1al Quality I Water Rrsource=
1617 Mail service Cenlcr I Raleigh. North Carolina '_7699-1617
919 807 6300
Lake Wendell Mitigation Site
April 28, 2016
Page 2 of 2
R2
Stream
Yes
Pasture actively
Yes
Yes {outside of
Narrow closed canopy = Enhancement
grazed by cattle and
forested area)
per 15A NCAC 02B .0295 (o)(C);
narrow dosed canopy
Outside of forested areas =
of native hardwoods
Restoration
R3
Ag Pond (to
Yes
Pasture actively
Yes3
Yes
Restoration (if pond is drained, a
be drained)
grazed by cattle
stream channel has to develop to be
viable fur any credit)
R4
Stream
Yes
Native hardwood
Yes
No
Preservation per 15A NCAC 028.0295
forest, closed canopy
(o)(5)
R5
Undetermined
Not on
Pasture actively
n/a
Yes
Need stream determination by DWR;
conveyance
maps
grazed by cattle
if feature is a stream, feature is viable
for buffer restoration per 15A NCAC
026 .0295 (o)(3)
'Subjectivity calls were determined using the 1:24,000 scale quadrangle topographic map prepared by USGS and the most
recent printed version of the soil survey map prepared by the NRCS
'For nutrient offset viability to be determined, the landowner must provide proof in writing that the land is being used for
agriculture or has been used for agriculture previously (prior to rule baseline). Dates, supported by photos or other
written records, must be included to confirm that the uses of the open fields onsite are/were for hay crop cultivation/row
crop/cattle.
'Feature has been piped or is a pond, but has potential for buffer mitigation if feature is restored into a stream.
Maps showing the project site and the features are provided and signed by Ms. Merritt on April
20, 2016. This letter should be provided in all future mitigation plans for this Site. In addition,
all vegetative plantings, performance criteria and other mitigation requirements for riparian
restoration, enhancement and preservation must follow the requirements in 15A NCAC 02B
.0295 to be eligible for buffer and nutrient offset credits. Where buffer and nutrient offset credits
are viable in the same area, only one credit type is allowed to be generated for credit, not both.
For any areas depicted as not being viable for nutrient offset credit, one could propose a different
measure other than riparian restoration/enhancement, along with supporting calculations and
sufficient detail to support estimates of load reduction, for review by the DWR to determine
viability for nutrient offset according to 15A NCAC 02B .0240.
Please contact Katie Merritt at (919)-807-6371 if you have any questions regarding this
correspondence.
Sincerely, ..
Karen Higgins, Supervlg�
401 and Buffer Permitting ranch
KAHUkm
Attachments: Site Aerial Map, USGS Topographic Map, NRCS Soil Survey
cc:File Copy (Katie Merritt)
DMS — Jeff Schaffer (via electronic mail)
tY �~
r,_ ✓. - brio[ - � .
kk
MW
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fir' _7 ' ► - -� � t } �i�„ ` e:' � ■, _ �
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� � � f' � � " 4 r i•-�*7F�'py: } �� � L,�-�k_' "+�r� �r'�y �_i�.r __ � `i}7.
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A�-'�G'• - � .�. � '! ' �� � ram.
? F ° ee fi' 1`' }yyamr a: r' i ►
NC USGS Topo & Parcels Map
April 20, 2016
CD
r
off"l- 1 ,� F
y ao/tu 0
e I U.- D3Y5
1 6,528
0-075 0.15
�L_
0.1 0.2
0 4 km
Po rtic ipaing HC CQuntm- NOCGIA, MC OneMap, US E PA
03mi
bgg-g-
ID#* 20160385 Version* 1
Select Reviewer:*
Erin Davis
Initial Review Completed Date 01/04/2021
Mitigation Project Submittal-12/31/2020
Is this a Prospectus, Technical Proposal or a New Site?* O Yes a No
Type of Mitigation Project:*
rJ Stream r Wetlands [Buffer ❑ Nutrient Offset
(Select all that apply)
Project Contact Information
Contact Name:*
Lindsay Crocker
Project Information
..................................................................................................................................................................
ID#:* 20160385
Existing IDY
Project Type: F DMS r Mitigation Bank
Project Name: Lake Wendell
County: Johnston
Document Information
Email Address:*
lindsay.crocker@ncdenr.gov
Version: * 1
Existing Version
Mitigation Document Type:*
Mitigation Monitoring Report
File Upload: Lake Wendell_ 97081_MY3_2020.pdf 24.61MB
Rease upload only one PDFcf the conplete file that needs to be subrritted...
Signature
Print Name:* Lindsay Crocker
Signature:*