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Stream Wetlands Buffer Nutrient Offset
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Project Type: • DMS Mitigation Bank
Project Name: Catfish Pond Mitigation Site
County: Durham
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MONITORING YEAR 2
ANNUAL BUFFER REPORT
FINAL
CATFISH POND MITIGATION SITE
Durham County, NC
NCDEQ Contract No. 007424
DMS Project No. 100039
NCDWR Project No. 2018-0196
RFP No. 16-007279
Neuse River Basin
HUC 03020201
Data Collection Period: September 2021
Draft Submission Date: November 2021
Final Submission Date: December 2021
PREPARED FOR:
NC Department of Environmental Quality
Division of Mitigation Services
1652 Mail Service Center
Raleigh, NC 27699-1652
PREPARED BY:
W
WILDLANDS
ENGINEERING
Wildlands Engineering, Inc.
312 West Millbrook Road, Suite 225
Raleigh, NC 27609
Jason Lorch
jlorch@wildlandseng.com
Phone: (919) 851-9986
CATFISH POND MITIGATION SITE
Monitoring Year 2 Buffer Report
TABLE OF CONTENTS
Section 1: PROJECT OVERVIEW........................................................................................................1
1.1 Project Summary...........................................................................................................................1
1.2 Project Goals and Objectives........................................................................................................ 1
1.3 Monitoring Year 2 Data Assessment............................................................................................. 2
1.3.1 Vegetative Assessment.........................................................................................................2
1.3.2 Vegetation Areas of Concern................................................................................................ 3
1.4 Monitoring Year 2 Summary......................................................................................................... 3
Section 2: METHODOLOGY...............................................................................................................3
Section 3: REFERENCES....................................................................................................................4
APPENDICES
Appendix 1 General Figures and Tables
Figure 1
Project Vicinity Map
Figure 2
Service Area Map
Figure 3
Project Component/Asset Map
Figure 4
Catfish Pond II Mitigation Bank Parcel Site Map
Table 1
Buffer Project Areas and Assets
Table 2
Project Activity and Reporting History
Table 3
Project Contact Table
Table 4
Project Information and Attributes
Table 5
Adjacent Forested Areas Existing Tree and Shrub Species
Table 6
Planted Tree Species
Appendix 2 Visual Assessment Data
Figure 5-5b Monitoring Plan View Maps
Table 7 Vegetation Condition Assessment Table
Vegetation Plot Photographs
Overview Photographs
Appendix 3
Vegetation Plot Data
Table 8
Vegetation Plot Criteria Attainment Table
Table 9
CVS Vegetation Tables - Metadata
Table 10
Planted and Total Stem Counts
Catfish Pond Mitigation Site
Monitoring Year 2 Annual Buffer Report - FINAL i
Section 1: PROJECT OVERVIEW
1.1 Project Summary
Wildlands Engineering, Inc. (Wildlands) implemented a full delivery project at the Catfish Pond
Mitigation Site (Site) for the North Carolina Department of Environmental Quality Division of Mitigation
Services (DIMS). A total of 7,140 linear feet of perennial and intermittent streams were restored and
enhanced in Durham County, NC. A conservation easement comprised of 20.73 acres along Catfish Creek
and three unnamed tributaries in the Neuse River Basin are included in the project. A total of 18.22
acres (793,207 ft2) of riparian buffer have been restored or enhanced and are expected to generate
523,358.865 riparian buffer credits, with potential to convert some buffer credits to nutrient offset
credits dependent on the need. The Site is located approximately 12 miles north of the City of Durham
and approximately 3 miles east of the Orange County/Durham County border (Figure 1). The project
resides within Hydrologic Unit Code 03020201020040 and North Carolina Department of Water
Resources (NCDWR) Sub -basin 03-04-01. Two unnamed tributaries (UT1 and UT2) drain to Catfish Creek,
which drains to Mountain Creek, and one unnamed tributary (Mountain Tributary) drains directly to
Mountain Creek. Mountain Creek flows into Little River, the Eno River, and then Falls Lake. Falls Lake is
classified as Water Supply Waters (WS-IV) and Nutrient Sensitive Waters (NSW).
Work at the Site was planned, designed, and constructed per the Catfish Pond Mitigation Site — Riparian
Buffer Mitigation Plan (Wildlands, 2019) and the Consolidated Buffer Mitigation Rule 15A NCAC 02B
.0295 (effective November 1, 2015). The purpose of the riparian buffer restoration is to provide riparian
buffer credits to compensate for buffer impacts within the Hydrologic Unit Code 03020201 and the Falls
Lake Watershed. The service area for the riparian buffer credits is depicted in Figure 2. The mitigation
credits generated from the Site are included in Table 1 and illustrated in Figure 3 located in Appendix 1.
With the addition of Catfish Pond II Mitigation Bank Parcel (Catfish Pond II, DWR Project Number 2018-
0196v2), it is not necessary to deduct credits for lack of diffuse flow where Ditch D enters the DIMS
conservation easement. The Catfish Pond II conservation easement completely encompasses Ditch D
allowing for diffuse flow through the riparian buffer. Fencing has been installed around Catfish Pond II
(Appendix 1, Figure 4).
1.2 Project Goals and Objectives
Prior to construction, the primary degradation of Catfish Creek was the creation of Catfish Pond
sometime between 1940 and 1955. Within the same period, extensive logging and farm road
construction took place. Aerial photographs from 1972 suggest that UT1 had been straightened for
agricultural purposes. Catfish Creek above and below the pond, UT2, and Mountain Tributary, showed
few signs of channel manipulation.
The major goals of the riparian restoration project are to provide ecological and water quality
enhancements to the Neuse River Watershed within the Falls Lake Water Supply Watershed by creating
a functional riparian corridor and restoring the riparian area. The project supports specific goals
identified in the 2010 Neuse River Basin Restoration Priorities (RBRP) for the Neuse River Targeted Local
Watershed, which highlights the importance of riparian buffers for stream restoration projects
(Breeding, 2010). Forested riparian areas immobilize and retain nutrients and suspended sediment. The
RBRP also supports the Falls Lake Nutrient Management Strategy (NCDWR, 2011). Falls Lake is the
receiving water supply water body downstream of the Site and is classified as WS-IV and NSW. Specific
enhancements to water quality and ecological processes are outlined below:
• Exclude cattle from project streams — Fencing has been installed around project areas adjacent
to cattle pastures.
Catfish Pond Mitigation Site
Monitoring Year 2 Annual Buffer Report - FINAL 1
• Decrease nutrient levels — Filtering runoff from the agricultural fields through restored native
riparian zones. The off -site nutrient input is absorbed on -site by filtering flood flows through
restored floodplain areas, where flood flows can disperse through native vegetation.
• Decrease water temperature and increase dissolved oxygen concentrations — Riparian areas will
create additional long-term shading of the channel flow to reduce thermal pollution.
• Restore and enhance native floodplain vegetation — Planted native tree species in riparian zone
where tree growth was insufficient.
• Permanently protect the project Site from harmful uses — Established a conservation easement
on the site.
The 20.73-acre Site is protected with a permanent conservation easement. Of the 20.73 acres, Neuse
riparian buffer credits were generated by restoring 5.92 acres and enhancing 12.30 acres. No buffer
credit will be generated from the remaining 2.51 acres. In general, riparian buffer restoration area
widths on streams extend out to 50 feet from top of bank on each side of the stream channel. Figure 3
and Table 1 in Appendix 1 detail the buffer credit generation.
1.3 Monitoring Year 2 Data Assessment
The Mitigation Plan (Wildlands, 2019) was submitted and accepted by DIMS in July 2019. Construction
activities by Main Stream Earthwork, Inc. and tree planting by Bruton Natural Systems, Inc. were both
completed in March 2020. The baseline as -built survey was completed by Kee Mapping and Surveying in
April 2020. Refer to Appendix 1 for detailed project activity, history, contact information, and
watershed/site background information.
Vegetative performance for buffer restoration areas will be in accordance with 15A NCAC 02B
.0295(n)(2)(B), and (n)(4) (effective November 1, 2015). To meet success criteria, areas generating buffer
mitigation credits shall include a minimum of four native hardwood tree species, where no one species
is greater than 50 percent of stems, and shall have a survival of at least 260 planted stems per acre at
the end of the required five-year monitoring period. For monitoring to be completed and buffer credit
to be awarded, NCDWR must provide written approval of successful revegetation of buffer restoration
areas. Year 2 monitoring (MY2) was conducted to assess the condition of the vegetation in September
2021.
1.3.1 Vegetative Assessment
The quantity of monitoring vegetation plots was determined in accordance with the Carolina Vegetative
Sampling Protocol (Lee et al., 2008)) such that at least 2 percent of the Site is encompassed in
monitoring plots. A total of 7 vegetation plots (each 100 square meters) were established within the
conservation easement boundaries. The plot corners have been marked and are recoverable either
through field identification or with the use of a GPS unit. Reference photographs are taken at the origin
looking diagonally across the plot to the opposite corner on an annual basis. Trees will be marked
annually with flagging tape. Species composition, vigor, height, density, and survival rates will be
evaluated by plot on an annual basis. The extent of invasive species coverage will also be monitored and
controlled as necessary.
The 2021 annual vegetation monitoring resulted in an average survival of 491 planted stems per acre,
which exceeds the final requirement of 260 stems per acre at the end of Monitoring Year 5. Planted
stem densities for each plot range from 405 to 567 stems per acre and each plot includes at least four
planted species. Volunteer stems have begun to establish themselves and include desirable species such
as American persimmon (Diospyros virginiana), tulip poplar (Liriodendron tulipifera), sycamore (Platanus
occidentalis), and green ash (Fraxinus pennsylvanica). The Site is on track to meet the final success
criteria. Refer to Appendix 2 for the vegetation condition assessment table, monitoring plan view maps,
Catfish Pond Mitigation Site
Monitoring Year 2 Annual Buffer Report -FINAL 2
vegetation plot and overview photographs. Appendix 3 contains vegetation plot criteria attainment
data, CVS vegetation plot metadata, and vegetation summary tables.
1.3.2 Vegetation Areas of Concern
Invasive species at Catfish Pond have been greatly reduced by past treatments throughout the site.
However, Wildlands recognizes that multiple treatments are typically needed for effective invasive plant
control. Scattered stems of Chinese Privet (Ligustrum sinensis), Princess tree (Paulownia tomentosa),
and Tree of Heaven (Ailanthus altissima) were treated in September 2021. These areas will be
monitored and retreated as necessary. Additionally, sporadic areas of re -sprouting multiflora rose (Rosa
multiflora), Chinese privet (Ligustrum sinense), and Japanese honeysuckle (Lonicera japonica) will be
addressed in MY3 using a combination of methods including mechanical removal as well as foliar and
cut stump applications.
1.4 Monitoring Year 2 Summary
Vegetation across the Parcel is exceeding performance standards. Monitoring Year 2 data shows an
average density of 491 planted stems per acre across vegetation plots. The Parcel is on track to achieve
the final success criteria of 260 stems per acre at the end of Monitoring Year 5. In addition, desirable
volunteer species such as American persimmon (Diospyros virginiana) and tulip poplar (Liriodendron
tulipifera) are establishing themselves. Sporadic invasive vegetation was treated in September 2021 and
follow up treatments are scheduled for Monitoring Year 3. To build on the success of previous herbicide
ring sprays, additional ring sprays will be applied around the base of trees in areas of high competition
with herbaceous vegetation in spring 2022.
Summary information/data related to the performance of various project and monitoring elements can
be found in the tables and figures in the report appendices. Narrative background and supporting
information, formerly found in these reports, can be found in the Mitigation Plan (Wildlands, 2019)
available on DMS's website. All raw data supporting the tables and figures in the appendices are
available from DIMS upon request.
Section 2: METHODOLOGY
Planted woody vegetation was monitored in accordance with the guidelines and procedures developed
by the Carolina Vegetation Survey-EEP Level 2 Protocol (Lee et al., 2008). A total of six standard 10-
meter by 10-meter vegetation plots and one 5-meter by 20-meter vegetation plot were established
within the Site conservation easement area.
Catfish Pond Mitigation Site
Monitoring Year 2 Annual Buffer Report - FINAL 3
Section 3: REFERENCES
Breeding, R. 2010. Neuse River Basin Restoration Priorities. North Carolina Ecosystem Enhancement
Program. Accessed at:
https://files.nc.gov/ncdeq/M itigation%20Services/Watershed_Planning/Neuse_River_Basin/FINAL%2
ORBRP % 20Neuse%202010_% 2020111207 % 2000 RRECTE D. pdf
Lee, M.T., Peet, R.K., Roberts, S.D., & Wentworth, T.R. 2008. CVS-EEP Protocol for Recording Vegetation
Version 4.2. Accessed at: http://cvs.bio.unc.edu/protocol/cvs-eep-protocol-v4.2-lev1-2.pdf
North Carolina Department of Environmental Quality, Division of Mitigation Services (NCDMS). 2017.
Riparian Buffer and Nutrient Offset Buffer Baseline and Annual Monitoring Report Template version
2.0 Accessed at:
https://files.nc.gov/ncdeq/Mitigation%20Services/Document%20Management%20Library/Guidance%
20and%20Template% 20Documents/RB_NO_Base_Mon_Tem plate_2.0_2017_5.pdf
North Carolina Department of Environmental Quality, Division of Water Resources (NCDWR). 2000. 15A
NCAC 02B .0233 Neuse River Basin: Nutrient Sensitive Waters Management Strategy: Protection and
Maintenance of Existing Riparian Buffers. Accessed at:
http://reports.oah.state.nc.us/ncac/title% 2015a%20-
%20envi ro nmenta l%20qua l ity/cha pter%2002%20-
%20envi ronmental%20management/subchapter%20b/15a%20ncac%2002b%20.0233. pdf
North Carolina Department of Environmental Quality, Division of Water Resources (NCDWR). 2011. Falls
Lake Nutrient Management Strategy. Accessed at: https://deq.nc.gov/about/divisions/water-
resources/water-planning/nonpoint-source-planning/falls-lake-nutrient-strategy
North Carolina Department of Environmental Quality, Division of Water Resources (NCDWR). 2015. 15A
NCAC 02B .0295 Mitigation Program Requirements for Protection and Maintenance of Riparian
Buffers. Accessed at: http:Hreports.oah.state.nc.us/ncac/title%2015a%20-
%20envi ro nmenta l%20q ua l ity/cha pter%2002%20-
%20envi ronmental%20management/subchapter%20b/15a%20ncac%2002b%20.0295. pdf
North Carolina Department of Environmental Quality, Division of Water Resources (NCDWR). 2011.
Surface Water Classifications. Accessed at: https://deq.nc.gov/about/divisions/water-
resources/planning/classification-standards/classifications#DWRPrimaryClassification
Wildlands Engineering, Inc. 2019. Catfish Pond Mitigation Site — Riparian Buffer Mitigation Plan. North
Carolina Department of Environmental Quality, Division of Mitigation Services (NCDMS), Raleigh, NC.
V Catfish Pond Mitigation Site
Monitoring Year 2 Annual Buffer Report -FINAL 4
APPENDIX 1. General Figures and Tables
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Catfish Pond Mitigation Site
Monitoring Year 2 — 2021
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Catfish Pond Mitigation Site
Monitoring Year 2 — 2021
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Durham County, NC
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"- Catfish Pond Conservation Easement
Catfish Pond II Conservation Easement
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Figure 4. Catfish Pond II Mitigation Bank Parcel Site Map
W I L D L A N D S Catfish Pond Mitigation Site
ENGINEERING 0 250 500 Feet Monitoring Year 2 — 2021
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Durham County, NC
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Table 2. Project Activity and Reporting History
Catfish Pond Mitigation Site
DMS Project No. 100039
Monitoring Year 2 - 2021
Activity or Report
Mitigation Plan
Data Collection Complete
July 2019
Completion or Scheduled Delivery
July 2019
Final Design - Construction Plans
August 2019
August 2019
Construction
February -March 2020
March 2020
Temporary S&E mix applied to entire project areal
March 2020
March 2020
Permanent seed mix applied to reach/segments'
April 2020
April 2020
Bare root and live stake plantings for reach/segments
March 2020
March 2020
Baseline Monitoring Document (Year 0)
March 2020
June 2020
Competitive Vegetation Treatment2
April -May 2020
Invasive Vegetation Treatment
May & September 2020
Year 1 Monitoring October 2020
December 2020
Invasive Vegetation Treatment
September 2021
Year 2 Monitoring
September 2021
December 2021
Year 3 Monitoring
2022
December 2022
Year 4 Monitoring
2023
December 2023
Year 5 Monitoring
2024
December 2024
'Seed and mulch is added as each section of construction is completed.
Herbicide ring sprays around the base of planted stems.
Table 3. Project Contact Table
Catfish Pond Mitigation Site
DMS Project No. 100039
Monitoring Year 2 - 2021
Wildlands Engineering, Inc.
Designer
497 Bramson Ct, Suite 104
Daniel Johnson, PE
Mt. Pleasant, SC 29464
843.277.6221
Main Stream Earthwork, Inc.
Construction Crew
631 Camp Dan Valley Rd
Reidsville, NC 27320
Bruton Natural Systems, Inc
Planting Contractor
P.O. Box 1197
Fremont, NC 27830
Canady's Landscaping & Erosion
Seeding Contractor
256 Fairview Acres Rd
Lexington, NC 27295
Seed Mix Sources
Garrett Wildflower Seed Farm
1591 Cleveland Rd
Smithfield, NC 27577
Ernst Conservation Seeds, Inc.
8884 Mercer Pike
Meadville, PA 16335
Nursery Stock Suppliers
Dykes and Sons Nursery and Greenhouse
Bare Roots
825 Maude Etter Rd
McMinnville, TN 37110
Live Stakes
Bruton Natural Systems, Inc
Foggy Mountain Nursery
797 Helton Creek Rd
Lansing, NC 28643
Monitoring Performers
Wildlands Engineering, Inc.
Monitoring, POC
Jason Lorch
919.851.9986
Table 4. Project Information and Attributes
Catfish Pond Mitigation Site
DIMS Project No. 100039
Monitoring Year 2 - 2021
PROJECT INFORMATION
Project Name
Catfish Pond Mitigation Site
County
Durham County
Project Coordinates (latitude and longitude)
36' 9' 48.03" N, 78' 54' 37.66" W
Project Area (acres)
20.73
Planted Acreage (acres of woody stems planted)
PROJECT WATERSHED SUMMARY
Physiographic Province
8.00
INFORMATION
Carolina Slate Belt of the Piedmont Physiographic Province
River Basin
Neuse River
USGS Hydrologic Unit 8-digit
03020201
USGS Hydrologic Unit 14-digit
03020201020040
DWR Sub -basin
03-04-01
Project Drainiage Area (acres)
1227 (Catfish Creek - 197, Mountain Tributary - 30)
Project Drainage Area Percentage of Impervious Area
10.0%
CGIA Land Use Classification
145.6%forested, 54.2% cultivated, 0.2% wetland
Table S. Adjacent Forested Areas Existing Tree and Shrub Species
Catfish Pond Mitigation Site
DIMS Project No. 100039
Monitoring Year 2 - 2021
Common Name Scientific Name Wetland Indicator
Status
Black Willow Salix nigra OBL
Eastern Red Cedar
Juniperus virginiana
FACU
Green Ash
Fraxinus pennsylvanica
FACW
Hazel Alder
Alnus serrulata
OBL
Paw Paw
Asimina triloba
FAC
Red Maple
Acerrubrum
FAC
Sweet Gum
Liquidambarstyraciflua
FAC
Sycamore
Platanus occidentalis
FACW
White Oak
Quercus alba
FACU
Yellow Poplar
I Liriodendron tulipifera
FACU
Table 6. Planted Tree Species
Catfish Pond Mitigation Site
DIMS Project No. 100039
Monitoring Year 2 - 2021
Common Name
Arrowwood Viburnum
Scientific Name
Viburnum dentatum
Number
Planted
55
% of Total
1.0%
Green Ash
Fraxinus pennsylvanica
646
11.5%
Overcup Oak
Quercus lyrata
365
6.5%
River Birch
Betula nigra
927
16.5%
Shumard Oak
Quercus shumardii
646
11.5%
Smooth Serviceberry
Amelanchier laevis
55
1.0%
Swamp Chestnut Oak
Quercus michauxii
646
11.5%
Sycamore
Platanus occidentalis
1,207
21.5%
White Oak
Quercus alba
365
6.5%
Willow Oak
Quercus phellos
646
11.5%
Yellow Buckeye
lAesculusflava
55
1.0%
APPENDIX 2. Visual Assessment Data
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Table 7. Vegetation Condition Assessment Table
Catfish Pond Mitigation Project
DMS Project No. 100039
Monitoring Year 2 - 2021
Planted Acreage 8.00
Vegetation Category
Mapping Numberof
Definitions Threshold
Polygons
Combined
Acreage
%of
Planted
Acreage
(Ac)
Very limited cover of both woody and herbaceous
Bare Areas
0.1
0
0
0%
material.
Woody stem densities clearly below target levels
Low Stem Density Areas
0.1
0
0
0%
based on MY3, 4, or 5 stem count criteria.
Total
0
0
0%
Areas of Poor Growth
Areas with woody stems of a size class that are
0.25 Ac
0
0
0%
Rates or Vigor
obviously small given the monitoring year.
Cumulative Total
0
0.0
0%
Easement Acreage 20.73
Areas of points (if too small to render as polygons at
Invasive Areas of Concern 1,000 0 0 0%
map scale).
Areas of points (if too small to render as polygons at
Easement Encroachment Areas none 0 0 0%
map scale).
VEGETATION PLOT PHOTOGRAPHS
VEG PLOT 1 (0912312021)
VEG PLOT 2 (0912312021)
VEG PLOT 3 (0912312021) I VEG PLOT 4 (0912312021)
VEG PLOT 6 (0912312021)
k Catfish Pond Mitigation Site
Appendix 2: Visual Assessment Data — Vegetation Plot Photographs
Catfish Pond Mitigation Site
Appendix 2: Visual Assessment Data — Vegetation Plot Photographs
OVERVIEW PHOTOGRAPHS
Catfish Pond Mitigation Site
Appendix 2: Visual Assessment Data —Overview Photographs
Catfish Pond Mitigation Site
Appendix 2: Visual Assessment Data —Overview Photographs
1 Catfish Pond Mitigation Site
`�' Appendix 2: Visual Assessment Data —Overview Photographs
APPENDIX 3. Vegetation Plot Data
Table 8. Vegetation Plot Criteria Attainment Table
Catfish Pond Mitigation Site
DIMS Project No. 100039
Monitoring Year 2 - 2021
*Based on the target stem density for MY5 of 260 planted stems per acre.
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