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Project Type: • DMS Mitigation Bank
Project Name: Sandy Branch Mitigation Site
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MONITORING YEAR 1
ANNUAL REPORT
FINAL
December 2021
Chatham County, NC
Cape Fear River Basin
HUC 03030003
DMS Project No. 100060
NCDEQ Contract No. 7527
USACE Action ID No. SAW-2018-01167
NCDWR Project No. 2018-0786
Data Collection Period: May -November 2021
DMS RFP No. 16-007331
PREPARED FOR:
Kc
INC Department of Environmental Quality
Division of Mitigation Services
1652 Mail Service Center
Raleigh, NC 27699-1652
It
zo'.-�Ov
W1LDLANllS
December 19, 2021
Jeremiah Dow
N.C. Division of Mitigation Services
1652 Mail Service Center
Raleigh, NC 27699-1652
RE: Monitoring Year 1 Report Sandy Branch Mitigation Site, DMS ID# 100060
Cape Fear River Basin — CU# 03030003
Chatham County, North Carolina
Contract No. 7527
Dear Mr. Dow,
We have reviewed the comments on the Monitoring Year 1 Report for the above referenced project
dated December 15, 2021 and have revised the report based on these comments. The revised
documents are submitted with this letter. Below are responses to each of your comments. For your
convenience, the comments are reprinted with our response in italics.
MY1 Report —Stream Mitigation
1. The soil temperature figure should be included in the report and if budburst photos are available
these should also be included in the report and digital submittal.
The soil temperature figure was added to Appendix D and included in the digital submittal. No
budburst photos are available.
2. A figure should be included in the report illustrating a time series for the crest gauge data and
indicating the occurrence of the bankfull events listed in Table 10. Please also collate these raw data
and submit them as a single workbook with the figure included.
A figure illustrating a time series for the crest gauge data and indicating the occurrence of bankfull
events was added to Appendix D and included in the digital submittal.
If you have any questions, please contact me by phone (919) 851-9986, or by email
(jlorch@wild landseng.com).
Sincerely,
Jason Lorch, Monitoring Coordinator
Wildlands Engineering, Inc. (P) 919.851.9986 • 312 West Millbrook Road, Suite 225 • Raleigh, NC 27609
SANDY BRANCH MITIGATION SITE
Monitoring Year 1 Annual Report
TABLE OF CONTENTS
Section 1: PROJECT OVERVIEW.......................................................................................................1-1
1.1
Project Quantities and Credits...................................................................................................1-1
1.2
Project Goals and Objectives.....................................................................................................1-2
1.3
Project Attributes.......................................................................................................................1-3
Section
2: Monitoring Year 1 Data Assessment...............................................................................2-1
2.1
Vegetative Assessment..............................................................................................................2-1
2.2
Vegetation Areas of Concern.....................................................................................................2-1
2.3
Stream Assessment....................................................................................................................2-1
2.4
Stream Areas of Concern...........................................................................................................2-1
2.5
Hydrology Assessment...............................................................................................................2-1
2.6
Wetland Assessment..................................................................................................................2-1
2.7
Adaptive Management Plan......................................................................................................2-1
2.8
Monitoring Year 1 Summary......................................................................................................2-2
Section3:
METHODOLOGY.............................................................................................................3-1
Section
4: REFERENCES...................................................................................................................4-1
TABLES
Table 1. Project Mitigation Quantities and Credits...................................................................................1-1
Table 2: Goals, Performance Criteria, and Functional Improvements......................................................1-2
Table3. Project Attributes........................................................................................................................1-4
FIGURES
Figure 1 Current Condition Plan View
APPENDICES
Appendix A Visual Assessment Data
Table 4 Visual Stream Morphology Stability Assessment Table
Table 5 Vegetation Condition Assessment Table
Stream and Culvert Crossing Photographs
Vegetation Plot Photographs
Groundwater Well Photographs
Appendix B
Vegetation Plot Data
Table 6
Vegetation Performance Standards Summary Table
Table 7a
Fixed Plots: Planted and Total Stem Counts
Table 7b
Random Plots: Planted and Total Stem Counts
Appendix C
Stream Geomorphology Data
Cross -Section Plots
Table 8
Baseline Stream Data Summary
Table 9
Morphology and Hydraulic Summary (Dimensional Parameters - Cross -Section)
Reachwide Pebble Count Plots
Sandy Branch Mitigation Site
Monitoring Year 1 Annual Report - Final
Appendix D Hydrology Data
Table 10 Bankfull Events
Table 11 Rainfall Summary
Recorded Bankfull Events
Table 12 Groundwater Gauge Summary
Groundwater Gauge Plots
Soil Temperature Probe Plots
Appendix E Project Timeline and Contact Info
Table 13 Project Activity and Reporting History
Table 14 Project Contact Table
Appendix F Additional Documentation
As -Built IRT Comments
Sandy Branch Mitigation Site
Monitoring Year 1 Annual Report - Final
Section 1: PROJECT OVERVIEW
The Sandy Branch Mitigation Site (Site) is located in Chatham County, approximately seven miles
southeast of Siler City, NC in the Cape Fear River Basin 8-Digit Hydrologic Unit Code (HUC) 03030003.
The Site involves re-establishing a stream and wetland complex utilizing stream restoration, wetland re-
establishment, and wetland rehabilitation approaches. The Site is located within the DIMS Targeted Local
Watershed (TLW) for the Cape Fear River Basin HUC 03030003070050 (Bear Creek TLW) and the NC
DWR Subbasin 03-06-12. The Sandy Branch Mitigation Site is one of the projects identified in the Upper
Rocky River Local Watershed Plan (Table 3-1 in the report identifies it as Site No. 5) as a priority for
stream and wetland restoration. The Site was selected by DIMS to provide stream and wetland credits in
the Cape Fear River Basin 03030003 (Cape Fear 03).
1.1 Project Quantities and Credits
A conservation easement was recorded on 18.10 acres and was fenced prior to construction (Figure 1).
Mitigation work within the Site included 3,286 linear feet of perennial stream channel restoration and
8.540 acres of wetland re-establishment and rehabilitation. The project is expected to provide 3,286.000
stream credits and 7.267 wetland credits at closeout.
Table 1. Project Mitigation Quantities and Credits
ComponentsProject
Mitigation Plan As -Built Mitigation Restoration Mitigation
Project Segment Credits Comments
Footage/Acreage Footage/Acreage Category Level Ratio
(X:1)
Stream
Full Channel
Restoration,
861
849
Warm
R
1
861.000
Planted Buffer,
Sandy Branch
Fencing Out
R1
Livestock
110
104
Warm
R
1
110.000
Full Channel
Sandy Branch
Restoration,
1,929
1,919
Warm
R
1
1,929.000
R2
Planted Buffer,
Fencing Out
UT1
131
125
Warm
R
1
131.000
Livestock
UT2
255
254
Warm
R
1
255.000
Total:
3,286.000
Wetland
Re-establishment
N/A
4.721
Riparian
R
1.000
4.721
Rehabilitation
3.819
3.819
Riparian
RE
1.500
2.546
Total:
7.267
Sandy Branch Mitigation Site
Monitoring Year 1 Annual Report - Final 1-1
Restoration Level
Project Credits
Stream - Warm
Riparian Wetland -
Riverine
Restoration
3,286.000
Re-establishment
4.721
Rehabilitation
2.546
Totals
3,826.000
7.267
1.2 Project Goals and Objectives
The project is intended to provide numerous ecological benefits within the Cape Fear River Basin. While
benefits such as habitat improvement and geomorphic stability are limited to the Site, reduced nutrient
and sediment loading have farther reaching effects. Table 2 below describes expected outcomes to
water quality and ecological processes associated with the project goals and objectives. These goals
were established and completed with careful consideration of goals and objectives described in the
River Basin Restoration Priorities and to meet the DMS mitigation needs while maximizing the ecological
and water quality uplift within the watershed.
Table 2: Goals, Performance Criteria, and Functional Improvements
Likely Functional
Goal
Objective/ Treatment
Performance Criteria
Measurement
Monitoring Results
Uplift
Reconstruct stream
Entrenchment ratios
channels that will
remaining above 2.2
Reduce sediment
Cross-section
maintain stable
and bank height ratios
inputs from bank
monitoring will be
Improve the
pattern and profile
remaining below 1.2,
erosion. Contribute
assessed during MY11
stability of
considering hydrologic
coarser material in
No deviations from
to protection of or
MY2 MY3 MY5 and
stream
and sediment inputs
riffles and finer
design.
channels
to the system,
improvement to, a
material in pools, and
MY7 and visual
Nutrient -Sensitive
inspections will be
landscape setting, and
progression towards
Water.
assessed annually.
the watershed
stability shown in visual
conditions.
inspections.
Reconnect
Reconstruct stream
Reduce shear stress
channels with
channels with
on channels, hydrate
Four bankfull events in
Crest gauges and/or
Several bankfull events
floodplains and
appropriate bankfull
adjacent wetland
separate years within
pressure transducers
were recorded during
riparian
dimensions and depth
areas, and filter
monitoring period.
recording flow
MY1.
wetlands
relative to the existing
pollutants from
elevations.
floodplain.
overbank flows.
Install habitat features
such as constructed
Improve
riffles, lunker logs, and
Improve aquatic
There is no required
instream
brush toe into restored
communities in
performance standard for
N/A
N/A
habitat
streams. Add woody
project streams.
this metric.
material to channel
beds. Construct pools of
varying depth.
Sandy Branch Mitigation Site
Monitoring Year 1 Annual Report - Final 1-2
Likely Functional
Goal
Objective/ Treatment
Performance Criteria
Measurement
Monitoring Results
Uplift
Re-establish and
Improve terrestrial
Free groundwater surface
12 groundwater gauges
9 out of 12 groundwater
Restore
rehabilitate riparian
habitat. Contribute to
within 12 inches of the
equipped with pressure
gauges had groundwater
wetland
wetlands by raising
protection of, or
ground surface for 10%
transducers are located
within 12 inches of the
hydrology,
soils, and plant
stream beds and
improvement to, a
(27 days) of the growing
in representative
ground surface for 10.0%
planting native wetland
Nutrient -Sensitive
season under normal
wetland areas and
(27 days) of the growing
communities
species.
Water.
precipitation conditions.
monitored annually.
season consecutively.
Reduce/control
sediment inputs,
Survival rate of 320 stems
reduce/ manage
per acre at MY3, 260
planted stems per acre at
One hundred square
nutrient inputs,
MY5, and 210 stems per
meter vegetation plots
Restore and
provide canopy to
All 13 vegetation plots
enhance native
Plant native tree species
shade streams and
acre at MY7. Planted
are placed on 2% of the
have a planted stem
floodplain
in riparian zones where
reduce thermal
stems must average at
planted area of the Site
density greater than 320
vegetation
currently insufficient.
loadings, contribute to
least seven feet in height
and monitored during
stems per acre.
protection of, or
in each plot at the end of
MY1, MY2, MY3, MY5,
MY5 and 10 feet in height
and MY7.
improvement to, a
in each plot by the end of
Nutrient -Sensitive
Water.
MY7.
Permanently
Prevent development
Visually inspect the
and agricultural uses
protect the
Establish conservation
that would damage
Prevent easement
perimeter of the Site to
No easement
project site
easements and fence the
the Site or reduce the
encroachment.
ensure no easement
encroachments.
from harmful
Site.
benefits of the
encroachment is
uses
project.
occurring.
1.3 Project Attributes
The Site is located on a single parcel bounded by Elmer Moore Road on the northern edge and other
agricultural parcels to the east, south, and west. Prior to restoration the Site was an active livestock
operation characterized by extensively grazed pasture, minimal riparian vegetation, and project streams
functioning as the primary water source for livestock. The streams and riparian buffers onsite were in
the same approximate configurations since before 1965, according to aerial photographs. In general, the
area maintained its rural, agricultural character for more than 50 years with only minor changes in land
use and land cover. Table 3 below and Table 8 in Appendix C present additional information on pre -
restoration conditions.
Sandy Branch Mitigation Site
Monitoring Year 1 Annual Report - Final 1-3
Table 3. Project Attributes
Project Name
Sandy Branch Mitigation Site
County
Chatham
Project Area (acres)
18.10
Project Coordinates (latitude and longitude decimal)
35°38'35"N 79°23'14"W
Physiographic Province
Piedmont
River Basin
Cape Fear
USGS Hydrologic Unit 8-digit
3030003
DWR Sub -basin
03-06-12
Project Drainage Area (acres)
463
Project Drainage Area Percentage of Impervious Area
2%
Land Use Classification
49% Cultivated Crops/Hay, 36% Forested, 13% Developed, 2% Other
• • JIL
Parameters
Sandy
Branch R1
Sandy
Branch R2
UT1
UT2
Pre -project length (feet)
964
1,931
102
257
Post -project length (feet)
953
1,919
125
254
Valley confinement (Confined, moderately confined,
unconfined)
Unconfined
Drainage area (acres)
323 388-463 35 73
Perennial, Intermittent, Ephemeral
Perennial
NCDWR Water Quality Classification
C, NSW
Dominant Stream Classification (existing)
E4/F4 F4 E4/F4 F4
Dominant Stream Classification (proposed)
C4
Dominant Evolutionary Classification (Simon) if applicable
Wetland Summary
Parameters
Stage III: Degradation
Information
Re-establishment Rehabilitation
Pre -project area (acres)
N/A 3.819
Post -project area (acres)
4.721 3.819
Wetland Type (non -riparian, riparian)
Riparian Riparian
Mapped Soil Series
CmB - Cid-Lignum complex, 2-6% slopes
Soil Hydric Status
Regulatory
Predominatly Non-Hydric
Considerations Applicable? Resolved? Supporting Docs?
Waters of the United States - Section 404
Yes
Yes
USACE Nationwide
Permit No. 27 and DWQ
401 Water Quality
Certification No. 4134.
Waters of the United States Section 401
Yes
Yes
Endangered Species Act
Yes
Yes
Categorical Exclusion in
Mitigation Plan
(Wildlands, 2019)
Historic Preservation Act
Yes
Yes
Coastal Zone Management Act (CZMA or CAMA)
N/A
Essential Fisheries Habitat
N/A
Sandy Branch Mitigation Site
Monitoring Year 1 Annual Report - Final 1-4
Section 2: Monitoring Year 1 Data Assessment
Annual monitoring and site visits were conducted during MY1 to assess the condition of the project. The
vegetation and stream success criteria for the Site follow the approved success criteria presented in the
Mitigation Plan (Wildlands, 2019). Performance criteria for vegetation, stream, and hydrologic
assessment are located in Section 1.2 Table 2: Goals, Performance Criteria, and Functional
Improvements.
2.1 Vegetative Assessment
The MY1 vegetative survey was completed in August 2021. Vegetation monitoring resulted in a stem
density range of 445 to 769 planted stems per acre which is well above the interim requirement of 320
stems per acre required at MY3. Average stem density was 598 planted stems per acre. All 13 vegetation
plots met the interim success criteria and are on track to meet the final success criteria required for
MY7. Refer to Appendix A for Vegetation Plot Photographs and the Vegetation Condition Assessment
Table and Appendix B for Vegetation Plot Data.
2.2 Vegetation Areas of Concern
No vegetative areas of concern were identified during MY1.
2.3 Stream Assessment
Morphological surveys for MY1 were conducted in May 2021. All streams within the Site are stable and
functioning as designed. All 8 cross -sections at the Site show little to no change in the bankfull area and
width -to -depth ratio, and bank height ratios are less than 1.2. Substrate measurements indicate the
maintenance of coarser materials in the riffle reaches and finer particles in the pools. Refer to Appendix
A for the Visual Stream Morphology Stability Assessment Table and Stream Photographs. Refer to
Appendix C for Stream Geomorphology Data.
2.4 Stream Areas of Concern
No Stream areas of concern were identified during MY1.
2.5 Hydrology Assessment
At the end of MY7, four or more bankfull events must have occurred in separate years within the
restoration reaches. Sandy Branch had multiple bankfull events in MY1 resulting in partial attainment of
the stream hydrology assessment criteria. Refer to Appendix D for hydrologic data.
2.6 Wetland Assessment
The performance criteria for wetland hydrology is groundwater within 12 inches of the ground surface
for 10.0% (27 days) of the growing season consecutively. The estimated growing season is March 15t_
November 17t". These dates were determined using the NRCS WETS tables, soil temperature data from
the on -site soil temperature probe, and bud burst observations of Salix nigra on February 23, 2021. Of
the twelve groundwater monitoring wells on the Site, 9 wells met the success criteria during MY1. The
nine wells that met were all well above the success criteria of 27 days, all meeting with 37-62 days
consecutively. Wells 2 and 6 missed with a hydroperiod of 7.6% (20 days) and Groundwater Well 3
missed with a hydroperiod of 7.3% (19 days). After construction of the stream channel it is anticipated
that the groundwater table will take some time to recharge. Refer to Figure 1 for the groundwater
gauge locations and Appendix D for groundwater hydrology data and plots.
2.7 Adaptive Management Plan
No adaptive management plans are needed at this time.
Sandy Branch Mitigation Site
Monitoring Year 1 Annual Report - Final 2-1
2.8 Monitoring Year 1 Summary
All vegetation plots are on track to exceed the MY3 interim requirement of 320 planted stems per acre.
Vegetative cover has become well established and planted tree species are showing positive trends in
both density and vigor. Herbaceous growth is flourishing across the site and is providing effective
ground coverage to filter incoming runoff and nutrients. All project streams are stable and functioning
as designed. The nine groundwater gauges that met were well above the success criteria and showed
groundwater within the upper twelve inches for 14.1 to 23.7% (37-62 days) of the growing season
consecutively.
Summary information and data related to the performance of various project and monitoring elements
can be found in the tables and figures in the report appendices. All raw data supporting the tables and
figures in the appendices are available from DIMS upon request.
Sandy Branch Mitigation Site
Monitoring Year 1 Annual Report - Final 2-2
Section 3: METHODOLOGY
Geomorphic data was collected following the standards outlined in The Stream Channel Reference Site:
An Illustrated Guide to Field Techniques (Harrelson et al., 1994) and in Stream Restoration: A Natural
Channel Design Handbook (Doll et al., 2003). All Integrated Current Condition Mapping was recorded
using a Trimble handheld GPS with sub -meter accuracy and processed using Pathfinder and ArcGIS.
Crest gauges and pressure transducers were installed in riffle cross -sections and monitored throughout
the year. Hydrologic monitoring instrument installation and monitoring methods are in accordance with
the United States Army Corps of Engineers standards (USACE, 2003). Vegetation monitoring protocols
followed the Carolina Vegetation Survey-EEP Level 2 Protocol (Lee et al., 2008).
Sandy Branch Mitigation Site
460 Monitoring Year 1 Annual Report - Final 3-1
Section 4: REFERENCES
Lee, Michael T., Peet, Robert K., Steven D., Wentworth, Thomas R. 2006. CVS-EEP Protocol for Recording
Vegetation Version 4.0. http://www.nceep.net/business/monitoring/veg/datasheets.htm.
North Carolina Department of Environmental Quality, Division of Mitigation Services (DIMS). 2017.
Annual Monitoring Report Format, Data Requirements, and Content Guidance June 2017. Accessed
at: https://deq.nc.gov/about/divisions/mitigation-services/dms-vendors/rfp-forms-templates
North Carolina Ecosystem Enhancement Program (EEP), 2009. Cape Fear River Basin Restoration
Priorities.
https://files.nc.gov/ncdeq/Mitigation/20Services/Watershed_Planning/Cape_Fear_River_Basin/RB
RP%20CapeFear%202009%20Revised%20032013.pdf
North Carolina Geological Survey (NCGS), 1985. Geologic map of North Carolina 1:500,000 scale.
Compiled by Philip M. Brown at el. Raleigh, NC, NCGS.
https://ncdenr.maps.arcgis.com/apps/MapSeries/i ndex. htm I?appid=a8281cbd24b84239b29cd2ca798d4
a10
North Carolina Interagency Review Team. 2016. Wilmington District Stream and Wetland Compensatory
Mitigation Update. Accessed at: https://saw-reg.usace.army.mil/PN/2016/Wilmington-District-
M itigation-Update.pdf
Rosgen, D. L. 1994. A classification of natural rivers. Catena 22:169-199.
Rosgen, D.L. 1996. Applied River Morphology. Pagosa Springs, CO: Wildland Hydrology Books.
United States Army Corps of Engineers (USACE). 2003. Stream Mitigation Guidelines. USACE, NCDENR-
DWQ, USEPA, NCWRC.
Wildlands Engineering, Inc. (2019). Sandy Branch Mitigation Project Mitigation Plan. DIMS, Raleigh, NC.
Sandy Branch Mitigation Site
Monitoring Year 1 Annual Report - Final 4-1
WILDLANDS
ENGINEERING
AAA
Conservation Easement
R
Wetland Re-establishment
m9 ���01 �\ - Wetland Rehabilitation
Structures
fll�� O\\ Vegetation Plot Condition - MY1
Criteria Met - Fixed
III Gp�\\ Q Criteria Met - Random
3 kpo` = VA
Fencing
ti 4�, II
Stream Restoration
G9(1 As -built Top of Bank
\\\
' — Cross -Sections
Reach Break
® Gpp ko Crest Gauge
o
0 Photo Points
+ Soil Temperature Probe
�•�113+00
t� OC) @M9 III a + Barotroll
Groundwater Gauge Condition - MY1
MD Criteria Met
II i11�+o0 ♦ Criteria Not Met
�z1+oo�
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Figure 1 - Current Condition Plan View
Sandy Branch Mitigation Site
150 300 Feet DMS Project No. 100060
1 1 I Monitoring Year 1- 2021
Chatham County, NC
APPENDIX A. Visual Assessment Data
Table 4. Visual Stream Morphology Stability Assessment Table
Sandy Branch Mitigation Site
DMS Project No. 100060
Monitoring Year 1- 2021
Sandv Branch Reach 1
Number Total Amount of
Major Channel Category Metric Performing Number in Unstable
as Intended As -Built Footage
Assessed Stream Length
% Stable,
Performing as
Intended
953
Assessed Bank Length
1,906
Surface Scour/
Bank lacking vegetative cover resulting simply from
Bare Bank
poor growth and/or surface scour.
0
100%
Bank toe eroding to the extent that bank failure
Bank
Toe Erosion
appears likely. Does NOT include undercuts that are
0
100%
modest, appear sustainable and are providing
habitat.
Fluvial and geotechnical - rotational, slumping,
Bank Failure
0
100%
calving, or collapse.
Totals:
0
100%
Grade control structures exhibiting maintenance of
Grade Control
13
13
100%
grade across the sill.
Structure
Bank erosion within the structures extent of
Bank Protection
8
8
0%
influence does not exceed 15%.
Sandv Branch Reach 2
Number Total Amount of
Major Channel Category Metric Stable, Number in Unstable
Performing As -Built Footage
as Intended
Assessed Stream Length
% Stable,
Performing as
Intended
1,919
Assessed Bank Length
3,838
Surface Scour/
Bank lacking vegetative cover resulting simply from
Bare Bank
poor growth and/or surface scour.
0
100%
Bank toe eroding to the extent that bank failure
Bank
Toe Erosion
appears likely. Does NOT include undercuts that are
0
100%
modest, appear sustainable and are providing
habitat.
Fluvial and geotechnical - rotational, slumping,
Bank Failure
0
100%
calving, or collapse.
Totals:
0
100%
Grade control structures exhibiting maintenance of
Grade Control
24
24
100%
grade across the sill.
Structure
Bank erosion within the structures extent of
Bank Protection
14
14
100%
influence does not exceed 15%.
Table 4. Visual Stream Morphology Stability Assessment Table
Sandy Branch Mitigation Site
DMS Project No. 100060
Monitoring Year 1- 2021
UTl
Metric TotJ
FootageNumber Stable, I Amount of
Major Channel Category Performing as N um ber in Unstable
Intended As-B.ilt
Assessed Stream Length
% Stable,
Performing as
125
Assessed Bank Length
250
Surface Scour/
Bank lacking vegetative cover resulting simply from
Bare Bank
poor growth and/or surface scour.
0
100%
Bank toe eroding to the extent that bank failure
appears likely. Does NOT include undercuts that are
Bank
Toe Erosion
modest, appear sustainable and are providing
0
100%
habitat.
Fluvial and geotechnical - rotational, slumping,
Bank Failure
0
100%
calving, or collapse.
Totals:
0
100%
Grade control structures exhibiting maintenance of
Grade Control
4
4
100%
grade across the sill.
Structure
Bank erosion within the structures extent of
Bank Protection
2
2
100%
influence does not exceed 15%.
UT2
Number Stable, Amount of
Major Channel Category Metric Performing as TotJ
I N um beirti. Unstable
Intended As-Bu Footage
Assessed Stream Length
% Stable,
Performing as
Intended
254
Assessed Bank Length
508
Surface Scour/
Bank lacking vegetative cover resulting simply from
Bare Bank
poor growth and/or surface scour.
0
100%
Bank toe eroding to the extent that bank failure
Bank
appears likely. Does NOT include undercuts that are
Toe Erosion
0
100%
modest, appear sustainable and are providing
habitat.
Fluvial and geotechnical - rotational, slumping,
Bank Failure
0
100%
calving, or collapse.
Totals:
0
100%
Grade control structures exhibiting maintenance of
Grade Control
6
6
100%
grade across the sill.
Structure
Bank erosion within the structures extent of
Bank Protection
1
1
100%
influence does not exceed 15%.
Table 5. Vegetation Condition Assessment Table
Sandy Branch Mitigation Site
DMS Project No. 100060
Monitoring Year 1- 2021
Planted Acreage 15.87
[getation Category
Mapping
Definitions
Combined
% of Planted
Bare Areas
Very limited cover of both woody and herbaceous material. 0.10
0
0%
Low Stem Density
Woody stem densities clearly below target levels based on current MY stem count
0.10
0
0%
Areas
criteria.
Total
0
0%
Areas of Poor Growth
Planted areas where average height is not meeting current MY Performance Standard.
0.10
0
0%
Rates
Cumulative Total
0.0
0%
Easement Acreage
Vegetation Category
20.72
Definitions
Invasives may occur outside of planted areas and within the easement and will
therefore be calculated against the total easement acreage. Include species with the
Invasive Areas of
potential to directly outcompete native, young, woody stems in the short-term or 0.10 0 0%
Concern
community structure for existing communities. Invasive species included in
summation above should be identified in report summary.
Encroachment may be point, line, or polygon. Encroachment to be mapped consists of
Easement
any violation of restrictions specified in the conservation easement. Common
0 Encroachments Noted
Encroachment Areas
encroachments are mowing, cattle access, vehicular access. Encroachment has no
none
/ 0 ac
threshold value as will need to be addressed regardless of impact area.
STREAM AND CULVERT CROSSING PHOTOGRAPHS
PHOTO POINT 4 Sandy Branch R1— upstream (512012021)
PHOTO POINT 4 Sandy Branch R1— downstream (512012021)
PHOTO POINT 5 Sandy Branch R1— upstream (512012021) 1 PHOTO POINT 5 Sandy Branch R1— downstream (512012021) 1
PHOTO POINT 6 UT1— upstream (512012021) PHOTO POINT 6 UT1— downstream (512012021)
PHOTO POINT 7 Sandy Branch R2 — upstream (512012021) 1 PHOTO POINT 7 Sandy Branch R2 — downstream (512012021) 1
PHOTO POINT 8 Sandy Branch R2 — upstream (512012021)
PHOTO POINT 9 Sandy Branch R2 — upstream (512012021)
PHOTO POINT 8 Sandy Branch R2 — downstream (512012021)
PHOTO POINT 9 Sandy Branch R2 — downstream (512012021)
PHOTO POINT 11 Sandy Branch R2 — upstream (512012021) 1 PHOTO POINT 11 Sandy Branch R2 — downstream (512012021) 1
PHOTO POINT 12 Sandy Branch R2 — upstream (512012021) 1 PHOTO POINT 12 Sandy Branch R2 — downstream (512012021) 1
PHOTO POINT 13 Sandy Branch R2 — upstream (512012021) 1 PHOTO POINT 13 Sandy Branch R2 — downstream (512012021) 1
PHOTO POINT 14 Sandy Branch R2 — upstream (512012021) 1 PHOTO POINT 14 Sandy Branch R2 — downstream (512012021) 1
_ 71. - t'K� n ,. _ 3. � � •R� Yam` e
x"57
FF
Plow�F�
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VEGETATION PLOT PHOTOGRAPHS
FIXED VEG PLOT 1 (0810612021) 1 FIXED VEG PLOT 2 (0810612021) 1
1
FIXED VEG PLOT 3 (0810612021) 1 FIXED VEG PLOT 4 (0810612021) 1
FIXED VEG PLOT 5 (0810612021) 1 FIXED VEG PLOT 6 (0810612021)
FIXED VEG PLOT 7 (0810612021) 1 FIXED VEG PLOT 8 (0810612021) 1
FIXED VEG PLOT 9 (0810612021) 1 FIXED VEG PLOT 10 (0810612021) 1
®c
RANDOM VEG PLOT 11 (0810612021) 1 RANDOM VEG PLOT 12 (0810612021)
RANDOM VEG PLOT 13 (0810612021)
GROUNDWATER WELL PHOTOGRAPHS
GROUNDWATER WELL 1 (1111912021)
GROUNDWATER WELL 2 (1111912021)
GROUNDWATER WELL 3 (1111912021) I GROUNDWATER WELL 4 (1111912021)
GROUNDWATER WELL 5 (1111912021)
GROUNDWATER WELL 6 (1111912021) 1
GROUNDWATER WELL (1111912021)
GROUNDWATER WELL (1111912021)
GROUNDWATER WELL 8 (1111912021)
GROUNDWATER WELL 10 (1111912021)
GROUNDWATER WELL 12 (1111912021)
APPENDIX B. Vegetation Plot Data
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1
APPENDIX E. Project Timeline and Contact Info
Table 13. Project Activity and Reporting History
Sandy Branch Mitigation Site
DMS Project No. 100060
Monitoring Year 1- 2021
or Deliverable
Project Instituted
Data Collection Complete
September 2017
Task Completion or
DeliverableActivity
Submission
September 2017
Mitigation Plan Approved
December 2019
December 2019
Construction (Grading) Completed
September 2020
September 2020
Planting Completed
January 2021
January 2021
As -Built Survey Completed
September 2020
September 2020
Baseline Monitoring Document (Year 0)
Stream Survey
September 2020
April 2021
Vegetation Survey
January 2021
Year 1 Monitoring
Stream Survey
May 2021
December 2021
Vegetation Survey
August 2021
Year 2 Monitoring
Stream Survey
2022
December 2022
Vegetation Survey
2022
Year 3 Monitoring
Stream Survey
2023
December 2023
Vegetation Survey
2023
Year 4 Monitoring
December 2024
Year 5 Monitoring
Stream Survey
2025
December 2025
Vegetation Survey
2025
Year 6 Monitoring
December 2026
Year 7 Monitoring
Stream Survey
2027
December 2027
Vegetation Survey
2027
Table 14. Project Contact Table
Sandy Branch Mitigation Site
DMS Project No. 100060
Monitoring Year 1- 2021
Wildlands Engineering, Inc.
Designer
312 West Millbrook Road, Suite 225
Greg Turner, PE
Raleigh, NC 27609
919.851.9986
Construction Contractor
Main Stream Earthwork, Inc.
631 Camp Dan Valley Rd.
Monitoring Performers
Wildlands Engineering, Inc.
Jason Lorch
Monitoring, POC
919.851.9986
APPENDIX F. Additional Documentation
kt�
WILDLANDS
ENGINEERING
November 29, 2021
U.S. Army Corps of Engineers
Regulatory Division
Raleigh Field Office
3331 Heritage Trade Drive, Suite 105
Wake Forest, NC 27587
Attention: Kim Browning
Subject: As -Built Report and Plans
Sandy Branch Mitigation Project, Chatham County
Cape Fear River Basin HUC 0303003
USACE Action ID No. SAW-2018-01167/DWR No. 2018-0786
Dear Ms. Browning,
We have reviewed the North Carolina Interagency Review Team's (IRT) comments on the As -Built Report
for the Sandy Branch Mitigation Site. We will make necessary revisions in future monitoring documents.
Below are responses to each of the IRT's comments in your letter dated May 17, 2021. Your original
comments are provided below followed by our responses in bold italics.
USACE Comments, Casey Haywood:
1. Section 4.3: Please annotate in this section the plan to fence in the easement.
Future reports will include text mentioning that the conservation easement was fenced.
2. The AB drone footage was helpful and appreciated.
3. Please mark location of the photo points to include crossings and culverts.
Photos of the culvert crossing will be included in future monitoring reports.
USEPA Comments, Todd Bowers:
1. In Table 1, fencing is missing from the site objectives to meet the goal of permanently protecting the site
from harmful uses.
Fencing has been added to the list of site objectives in Table 1.
2. Section 2.3 Whenever percentages of a growing season are referenced it is important to clearly state the
actual number of consecutive days required to meet the hydrology standard threshold.
The number of consecutive days required to meet the hydrology standard threshold have been added
whenever the percentages of a growing season are referenced.
3. Section 4.3: Fencing could be addressed again here to align with site boundary marking.
Fencing has been addressed in future reports to align with site boundary marking.
4. Table 6b: Total area for the 3 random plots should be 3 ares instead of 2.
The Total area for the 3 random plots will be changed from 3 ares instead of 2 in the Monitoring Year
1 Report.
5. Planting Tables on Page 85 should list the wetland indicator status for each listed species.
Planting Tables in future as -built plan sets will include the wetland indicator status for each listed
species.
6. Planting Plan on Page 85: 1 recommend superimposing the fixed veg plot locations on this map to illustrate
that all planting zones are being monitored adequately. Figure 3 does a decent job at this so perhaps it is
redundant.
Fixed vegetation plot locations are typically shown on Figure 3. On future planting plan maps we will
consider showing vegetation plots depending on the scale of the map.
7. General: I am very pleased with all the relevant photos in the document illustrating the structures,
groundwater wells, cross sections and vegetation plots. The added bonus of the handheld video
presented is great too as I watched it before reading the report. This allowed me to anticipate some
aspects of the site (such as the lack of boulder sills) that were answered in detail by the as -built report
and red -line changes from the final mitigation plan. The only request I would have with photos would be
to cover the culverts in detail.
Photos of the culverts will be included in future monitoring reports.
DWR Comments, Erin Davis:
1. Many of the monitoring well and plot stations shifted slightly from the mitigation plan monitoring figure,
which is expected to a degree. But four of wetland wells appear to have moved from being within a re-
establishment area towards or within a rehabilitation area (GWG 7, 8, 10, 12). Particularly looking at
GWG 7 (which was originally proposed square within a non-hydric re-establishment area) and GWG 8,
will stationed well data adequately represent functional uplift and performance standards for the re-
establishment credit areas as described in the approved mitigation plan?
Monitoring wells 10 and 12 were placed as close as possible to the stations proposed in the mitigation
plan and are representative of intended wetland areas. Avenza mapping service was used to
determine the location of the wetland zones and assist in the placement of the monitoring wells. The
accuracy of the mapping service played part in the slight shift of the groundwater well placement.
Monitoring wells 7 and 8 also shifted slightly in the field to avoid placement in microtopographic high
or low spots. The chosen locations for wells 7 and 8 are representative of the functional uplift and
performance standards in the re-establishment zones but can be moved if deemed necessary.
2. Please confirm there were no changes from the approved mitigation plan planted species and percentages
(an updated/redline as -built planting table was not included).
No changes were made from the approved mitigation plan planted species and percentages.
If you have any questions, please contact me by phone (919) 851-9986, or by email
(jlorch@wildlandseng.com).
Sincerely,
Jason Lorch, Monitoring Coordinator