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HomeMy WebLinkAbout20180466 Ver 2_GES Dixon Road Bank 5th Annual Report 2023_202312281 Dixon Road Riparian Buffer and Nutrient Offset Mitigation Bank Chocowinity Creek Watershed Fifth Annual Report Tar- Pamlico Basin (HUC: 03020104) Chocowinity Creek Watershed December 2023 Greene Environmental Services, LLC North Carolina Department of Environmental Quality, Division of Water Resources Project Number: 2018-0466 v2 Submitted to: Katie Merritt, Nutrient Offset & Buffer Banking Coordinator NC Department of Environmental Quality - Division of Water Resources 1617 Mail Service Center Raleigh, NC 27699-1617 Email: katie.merritt@ncdenr.gov Phone: (919) 707-3637 Submitted by: Greene Environmental Services, Jeff Becker and David Knowles Ham Farms, 963 Hwy 258 S Snow Hill, NC 28580 Phone: (919) 215-3899, jrbecker@bellsouth.net; (252) 757-1978, ocesdk@gmail.c 2 Table of Contents Section Number Section Title Page Number 1.0 Annual Report Synopsis, Bank Location and Purpose 3 1.1 Annual Report Synopsis 3 1.2 Bank Location 3 1.3 Bank Purpose 4 2.0 Bank Description 4 2.1 Project Area – Existing Conditions Prior to Bank Establishment 5 3.0 Implementation of Riparian Buffer and Nutrient Offset Restoration Planning 6 4.0 Bank Monitoring Results and Maintenance 9 5.0 Comparison of Planted Species in Monitoring Plots From the Year 2 (2020) to the Year 3 (2021) Monitoring Effort 15 6.0 Overall Site Conditions at the Third Year (2021) Monitoring Period 20 7.0 Long-term Management 20 8.0 Riparian Buffer and Nutrient Offset Mitigation Potential 21 Figures Figure 1. Vicinity map for the Dixon Road Mitigation Bank. Figure 2. Bank within HUC Figure 3. Regional aerial image. Figure 4. Dixon Road Bank tracts. Figure 5. Conservation easement boundary survey. Figure 6. Credit determination map. Figure 6-A Credit determination map, excerpt of Tract 1 Figure 6-B Credit determination map, excerpt of Tract 2 Figure 7. USGS Hackney Quadrangle Figure 7-A. USGS Hackney Quadrangle excerpt. Figure 8. Soil map of Bank site Figure 9. Monitoring plot locations. Appendices Appendix A: Plot Data Tables Appendix B: Plot maps, species lists and photographs Appendix C: Stem Height Data from 2022 3 1.0 Annual Report Synopsis, Bank Location and Purpose Greene Environmental Services, LLC (GES) established a riparian buffer mitigation and nutrient offset bank in Beaufort County, NC under the terms and conditions of the GES Dixon Road Mitigation Banking Instrument (MBI). The bank, the Dixon Road Riparian Buffer and Nutrient Offset Mitigation Bank (Bank) is located in the Tar – Pamlico River Basin, Pamlico Sub-Basin (HUC: 03020104) (Figures 1 and 2). Streams within the Bank discharge via tributaries to Chocowinity Creek, then to the Pamlico River Estuary at Chocowinity Bay (Figure 3). 1.1 Fifth Annual Report Synopsis This document is the fifth of five annual reports submitted to NC-DWR as required by the MBI. Based on a survey of fourteen monitoring plots conducted by GES in October 2023, ten of the fourteen monitoring plots exhibited adequate stem densities (> 260 stems per acre) of planted species to meet performance standards (See Section 4.0). The remaining four plots had projected stem densities of 243 stems per acre, thus one stem (40 stems per acres) shy of the required minimum in the 10m x 10m plots. Among all monitoring plots, ten of the thirteen species planted in the Bank were represented. Among all plots the average species richness was 3.1 species and ranged from six to one species per plot. Five plots met the diversity criterion of four of more species per plot. Of those not meeting the criterion, four plots had three species, four had two species and one had only one species of planted stems. The relative density of species in the plots was highest for sycamore at 38 percent and swamp chestnut oak at 23 percent; the relative density of all other species was 12 percent or less. Average stem height among all species in the fourteen plots was 1.6 meters (5.2 feet). Average stem vigor among all 137 stems sampled in the plots was qualitatively assessed as “good” (stem vigor of 3), 1.2 Bank Location The Bank is located in western Beaufort County, NC (Figure 1). The street address is 883 Dixon Road (SR 1138), Chocowinity, NC, 27817. The midpoint of the 16.70-acre Bank (Figure 4) parcel is approximately 35.456896 x -77.076848; elevation ranges from approximately 27 feet to 35 feet above mean sea level. Access to the Bank parcel is via NC 33 south from Chocowinity 4 approximately 4 miles to Dixon Road then west on Dixon Road approximately 0.8 miles. The parcel is on the south side of Dixon Road. 1.3 Bank Purpose The regulatory purpose of the Bank is to provide riparian buffer and nutrient offset credits for new and existing development in the 8-digit Hydrologic Unit Code (HUC) 03020104 of the Tar-Pamlico River Basin requiring riparian buffer and/or nutrient offset mitigation in accordance with 15A NCAC 02B .0295 and the corresponding Dixon Road Mitigation Banking Instrument (MBI). The Bank will also improve water quality within the Tar-Pamlico River Basin by reducing nutrient and sediment inputs into the watershed. Land- use within the vicinity of the Bank is primarily agricultural and silvicultural usage, and to a lesser extent, low-density urban and rural development. Land use within the Bank parcel has historically been row crop agriculture. There are two unnamed streams and two field ditches on the parcel containing the Bank (Figures 4), each discharging to Chocowinity Creek or its tributaries and then to the Pamlico River Estuary. Establishing a native riparian forested community adjacent to all or portions of these waterways by planting saplings of native trees species and allowing natural vegetative succession to proceed in perpetuity will reduce nutrient and sediment loading into those waterways. The Bank has been established pursuant to the Mitigation Banking Instrument (MBI) developed for the Bank and submitted to NC- DWR. The Bank has been placed under permanent conservation easement to better ensure long-term protection of the site (Figure 5). 2.0 Bank Description The Dixon Road Bank consists of two tracts, each with acreage designated for riparian buffer credits and nutrient offset credits (Figure 6). Tract 1 consists of Stream 1 with no tributary streams or ditches present. Stream 1 flows off the Bank parcel toward the northwest to Joe Branch and then to Chocowinity Creek. Tract 2 consists of Stream 2 with three tributary ditches (Ditches 3, 4 and 5). Stream 2 flows in a generally northeastward direction off the property to Chocowinity Creek. Ditch 3 flows from south to north into Stream 2 and Ditch 5 flows from north to south into Stream 2. Ditch 4 likely has a bi-directional flow pattern with the western 5 portion of Ditch 4 flowing into Stream 2 but the eastern portion flowing east and then north joining Stream 2 at the eastern boundary of the Bank property. The Ditch 4 offset is not included in the Bank acreage calculation. In Tract 1, riparian restoration activities designated for riparian buffer credits along Stream 1 extend from the top of the stream bank landward a maximum of 100 feet on each side of the stream and paralleling the contour of the stream (Figures 6 and 6-A). The riparian restoration activities from this 101-foot parallel line outward to a maximum of 200 feet have been designated for nutrient offset credits. Similarly, in Tract 2, riparian restoration activities along Stream 2 within 100 feet of the stream has been designated for riparian buffer credits and from 101 feet to a maximum of 200 feet (but not overlapping with Tract 1) has been designated for nutrient offset credits (Figures 6 and 6-B). The designation of acreage adjacent to Ditches 3 and 5 has been designated for nutrient offset credit only, landward from the top of the ditch bank to a maximum of 200 feet but not overlapping with Tract 1. Table 1 provides an estimate of the acreage and square footage of mitigation credits for the Bank tracts. Table 1. Areal coverage of the Bank tracts. (See Figure 6). Bank Tract Riparian Buffer Square Feet (Acres) Nutrient Offset Acres Total Acreage Tract 1 171,687.0 sq. ft. (3.94 ac.) 4.11 ac. 8.05 ac Tract 2 103, 159.1sq. ft. (2.37 ac.) 6.28 ac. 8.65 ac Totals 274,846.1 sq. ft. (6.31 ac.) 10.39 ac.* 16.70 ac * Nutrient offset acreage has been adjusted to 10.01 acres as per guidance from NC-DWR. 2.1 Project Area – Existing Conditions Prior to Bank Establishment The Bank is located in the central coastal plain of eastern North Carolina. The landscape in the vicinity of the Bank is largely rural with the uplands in agricultural and silvicultural land uses and limited rural housing development. The uplands are dissected with numerous creeks and swamps; the largest being Chocowinity Creek and its associated swamps (Figures 7 and 7-A). Prior to European settlement and subsequent conversion to agricultural and forestry production 6 the dominant plant communities were likely Mesic, Mixed Hardwood Forests (Coastal Plain Subtype) and Coastal Plain Small Stream Swamp (Blackwater Subtype) based on the North Carolina Natural Heritage Program natural communities classification system developed by Schafale and Weakley (https://files.nc.gov/dncr-nhp/documents/files/Natural-Community-Classification-Third- Approximation-1990.pdf). The earliest USGS topographic map indicating land use (agricultural and forest) in the immediate vicinity of the Bank site was 1951; these conditions are essentially unchanged for the past six decades. 3.0 Implementation of Riparian Buffer and Nutrient Offset Restoration In an effort to improve water quality in the Tar River and subsequently downstream in the Pamlico River and Pamlico Sound estuaries, the NC Department of Environmental Quality classified the entire Tar-Pamlico River Basin as Nutrient Sensitive Waters (NSW) in the NC DEQ 2010 Tar- Pamlico River Basinwide Plan (https://deq.nc.gov/about/divisions/water- resources/planning/basin-planning/water-resource-plans/tar-pamlico-2010). As such, various nutrient management strategies have been implemented to reduce nitrogen and phosphorus loading in waters within the basin. One key strategy is to promote the establishment of vegetated riparian areas along natural and man-made water conveyances (ditches, canals, streams) that are within or adjacent to lands in agricultural production. Vegetated riparian areas reduce nutrient in several ways. Permanent vegetated riparian areas remove lands from agricultural production thus those lands do not receive direct application of fertilizer (chiefly nitrogen, phosphorus and potassium) and reduce soil erosion thereby reducing the nutrients (principally phosphorous) that are affixed to sediments. In addition, forested riparian areas separate agricultural lands from waterways, and with deep-rooted trees and stable soils, intercept, uptake and sequester nutrients found in groundwater and surfaces waters emanating from those agricultural lands. A goal of the Bank is to convert existing agricultural land adjacent to the streams and ditches into a riparian restoration site. This entailed establishing and preserving, through conservation easement, a 200-foot wide vegetated riparian zone adjacent to qualifying streams and ditches in the Bank project area. The post-Bank construction vegetation in this zone consists of planted native tree species and, through natural succession, colonizing herbaceous, shrub and tree species. 7 The Bank was planted, manually, with a mix of bare-root saplings of “character tree” species during March of 2019. A supplemental planting was conducted in March 2020, also with mix of native species. The saplings were obtained from the North Carolina Forest Service, Claridge Nursery in Goldsboro, NC. Soil conditions range from moderately well-drained sandy and clay loams to poorly-drained silt loams, all with low permeability. On-site conditions affecting the hydrologic properties of the soils included topographic variation (slopes and flats), drainage ditches, stream channelization, and vegetative cover and land use. The tree species selected for planting are adapted to these soil and topographic conditions (Figure 8). Five sapling species were planted initially; these were: river birch (Betula nigra), sugarberry (Celtis laevigata), sycamore (Platanus occidentalis), black walnut (Juglans nigra), and swamp chestnut oak (Quercus michauxii). Supplemental planting introduced box elder (Acer negrundo), mockernut hickory (Carya tomentosa), silky dogwood (Cornus amomum), American persimmon (Diospyros virginica), yellow poplar (Liriodendron tulipifera), white oak (Quercus alba), cherrybark oak (Quercus pagoda) and Nuttall oak (Quercus texana); swamp chestnut oak (Quercus michauxii) was planted supplementally as well as initially. The target density of planted trees at the end of the required five-years of monitoring is 260 trees per acre, with no one species comprising more than 50 percent of the total planted trees, in accordance with the MBI and 15A NCAC 02B .0295 (n)(2)(B). To achieve this target density, tree saplings were planted in rows approximately twelve feet apart and at intervals of approximately eleven feet resulting in a projected yield of 335 saplings per acre. Planting at a density of 335 saplings per acre allowed for a 22% sapling mortality. An estimated 5560 saplings were proposed for planting on the approximately 16.67-acre Bank (Table 2). Supplemental planting was in areas where survival rates of the initially planted saplings was low. There were 1425 saplings planted supplementally, thus a total of 7225 saplings were planted, cumulatively, for an estimated planting density of 433 saplings per acre. Sycamore was the most frequently planted species (26%); this species along with swamp chestnut oak (22%) accounted for half of the species planted (Table 3). River birch, sugarberry and black walnut accounted for 15%, 12% and 8%, respectively. None of the remaining eight species accounted for more than 3% of the remaining planted saplings. Of note was the presence of naturally colonizing saplings of American persimmon that survived site- 8 preparation disking in portions of the Bank site. Table 2. Saplings planted at the Dixon Road Mitigation Bank. Table 3. Relative density and stem densities of planted species at the Dixon Road Mitigation Bank. Species Common Name Relative Density Species (Percent) Species Density Per Acre Acer negrundo Box elder >1 1 Betula nigra River birch 15 66 Carya tomentosa Mockernut hickory 1 6 Celtis laevigata Sugarberry 12 54 Cornus amomum Silky dogwood 3 12 Diospyros virginica American persimmon 3 12 Juglans nigra Black walnut 8 36 Liriodendron tulipifera Yellow poplar 3 12 Platanus occidentalis Sycamore 26 114 Quercus alba White oak 1 6 Quercus michauxii Swamp chestnut oak 22 96 Quercus pagoda Cherrybark oak 1 6 Quercus texana Nuttall oak 3 12 Totals 100 433 Species Common Name Number Saplings Planted in 16.7 acres Initial Planting 2019 Betula nigra River birch 1100 Celtis laevigata Sugarberry 900 Juglans nigra Black walnut 600 Platanus occidentalis Sycamore 1900 Quercus michauxii Swamp chestnut oak 1300 Initial Planting (2019) Total Saplings 5800 Supplemental Planting 2020 Acer negrundo Box elder 25 Carya tomentosa Mockernut hickory 100 Cornus amomum Silky dogwood 200 Diospyros virginica American persimmon 200 Liriodendron tulipifera Yellow poplar 200 Quercus alba White oak 100 Quercus michauxii Swamp chestnut oak 300 Quercus pagoda Cherrybark oak 100 Quercus texana Nuttall oak 200 Supplemental Planting (2020) Total Saplings 1425 Total Saplings Planted in Bank 7225 9 4.0 Bank Monitoring Results and Maintenance The Bank was monitored annually for five years. If the vegetative success criteria have met and approved by NC DWR, this will be the final report. Reports include a vegetative plot summary (stem counts, stem heights, and stems per acre estimates) monitored in accordance with the CVS- EEP Protocol for Recording Vegetation (CVS-EEP, v. 4.2). Plots measuring 100 m2 (10m x 10m) (0.0247 acres) were established at the approximate locations identified on Figure 9. Table 4 lists the approximate coordinates for the fourteen plots. In October 2023, the fifth annual survey of the monitoring plots was conducted. Ten of the fourteen monitoring plots exceeded the target density of 260 stems per acre. Plot stem densities in the ten plots ranged from 364 stems per acre to 648 stems per acre. Four plots did not meet the target density; all four had 243 stems per acre, thus one stem shy of the required stem count of seven to meet the target. Stem density among all plots averaged 425 stems per acre (Table 5). The most frequently encountered species in the monitoring plots were: sycamore, swamp chestnut oak and river birch with relative densities of 38%, 23% and 12%, respectively (Table 5). The calculated stems per acre for these species were 150 for sycamore, 93 for swamp chestnut oak and 46 for river birch (Table 6). Relative densities of all other species were less than 10%. White oak, persimmon and mockernut hickory were planted in the Bank but did not occur in any monitoring plots. Naturally dispersed persimmon is abundant in portions of the Bank but were not counted as planted stems. Among all plots, species richness ranged from 1 to 6 species per plot (Table 5). Six plots met the met performance standard of for diversity as stated in the MBI and 15A NCAC 02B .0295, such that the plots should contain a minimum of four planted tree species with no one species comprising more than 50 percent of the total stem count by the end of the five-year monitoring period; eight plots did not meet this criterion (Appendix A). Five plots met the performance standard of four or more species per plot; nine plots did not meet this criterion (Species Richness in Table 5). GES will address this issue in Section 6.0 of this document. 10 Stem heights of all planted species were measured in each plot. The overall average stem height for stems among the fourteen plots was 1.6 m + 1.2 m (Table 7). Sycamore had the greatest average total height of 2.3 m + 1.2 m in height. River birch, swamp chestnut oak, cherrybark oak and Nuttall’s oak all averaged one meter or more in height. All other species averaged less than one meter in height. A qualitative assessment of stem status was made for each stem in all plots. In summary, by species among all plots, indicated that the status for river birch, sycamore, and three oak species was good (Table 8). The status of all other species was fair to unlikely to survive. In general, growth for the majority of the planted stems after five years was slow and damage by deer grazing and rubs was not uncommon. Appendix A provides stem heights, stem diameters and stem vigor for each individual stem in all plots. A map of sapling locations was generated for each plot and is provided in Appendix A. Photographs of each plot were taken from the same plot corner (northwest corner) and are also provided in Appendix B. Appendix C provides total height data collected at the end of the 2022 growing season for each stem in all 14 monitoring plots. Signage was installed at prominent locations along access paths and tract boundaries to identify the Bank tracts as protected, conservation areas. The signs will be maintained by Greene Environmental Services, LLC for the duration of the five-year monitoring period. The signs list prohibited activities within the Bank (e.g., mowing or cutting vegetation, excavation or deposition of spoil material, vehicular traffic), as well as contact information for Greene Environmental Services, LLC. Easement boundaries were posted with white, PVC posts to ensure clear a distinction between the Parcel and adjacent properties. Boundary markers disturbed, damaged, or destroyed will be repaired and/or replaced on an as needed basis. 11 Table 4. Approximate latitude and longitude of fourteen 0.0247-acre monitoring plots. Plot Latitude Longitude 1 35.459422 -77.075180 2 35.458821 -77.074769 3 35.458889 -77.075370 4 35.458187 -77.075139 5 35.458334 -77.074666 6 35.457534 -77.075581 7 35.457230 -77.075821 8 35.457351 -77.076187 9 35.458096 -77.076848 10 35.458364 -77.075604 11 35.458937 -77.076525 12 35.458733 -77.076897 13 35.458075 -77.076512 14 35.457964 -77.076952 Table 5. Fifth Annual Plot Monitoring, 2023. Monitoring plots (D-1 through D-14) species stem counts and percent relative densities in fourteen 0.0247-acre plots. Dixon Road Mitigation Bank. Species Common Name D-1 D-2 D-3 D-4 D-5 D-6 D-7 D-8 D-9 D- 10 D- 11 D- 12 D- 13 D- 14 Total Stems per Species Percent Relative Density per Species Acer negrundo Box elder 7 3 10 7 Betula nigra River birch 3 4 3 6 16 12 Carya tomentosa Mockernut hickory 0 0 Celtis laevigata Sugarberry 1 1 1 Cornus amomum Silky dogwood 2 2 1 Diospyros virginica American persimmon 0 0 Juglans nigra Black walnut 1 1 1 3 2 Liriodendron tulipifera Yellow poplar 1 1 1 3 2 Platanus occidentalis Sycamore 3 4 6 3 4 6 3 3 3 10 7 52 38 Quercus alba White oak 0 0 Quercus michauxii Swamp chestnut oak 7 5 2 1 2 7 5 3 32 23 Quercus pagoda Cherrybark oak 2 3 1 2 1 1 10 7 Quercus texana Nuttall oak 1 2 1 4 1 8 6 Total Stems Per Plot 11 16 11 16 6 6 10 6 6 10 9 9 10 12 137 100 Stem Density Per Acre 445 648 445 648 243 243 405 243 243 405 364 364 405 486 396 Number of species per plot (Species richness) 3 6 3 5 4 2 4 3 2 2 3 2 1 4 Avg. = 3.1 + 1.4 Table 6. Fifth Annual Plot Monitoring, 2023. Density per acre of planted sapling species in fourteen 0.0247-acre plots. Dixon Road Mitigation Bank. Species Common Name D-1 D-2 D-3 D-4 D-5 D-6 D-7 D-8 D-9 D-10 D-11 D-12 D-13 D-14 Stem Densities per Acre by Species Acer negrundo Box elder 0 283 0 121 0 0 0 0 0 0 0 0 0 0 29 Betula nigra River birch 0 121 0 0 0 162 0 121 0 0 0 243 0 0 46 Carya tomentosa Mockernut hickory 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Celtis laevigata Sugarberry 0 0 0 0 40 0 0 0 0 0 0 0 0 0 3 Cornus amomum Silky dogwood 81 0 0 0 0 0 0 0 0 0 0 0 0 0 6 Diospyros virginica American persimmon 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Juglans nigra Black walnut 0 40 0 40 0 0 0 0 0 0 0 0 0 40 9 Liriodendron tulipifera Yellow poplar 0 40 0 0 40 0 0 0 0 0 40 0 0 0 9 Platanus occidentalis Sycamore 0 121 162 243 121 0 162 0 243 121 121 121 405 283 150 Quercus alba White oak 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Quercus michauxii Swamp chestnut oak 283 0 202 81 0 0 40 81 0 283 202 0 0 121 93 Quercus pagoda Cherrybark oak 81 0 0 121 40 81 40 40 0 0 0 0 0 0 29 Quercus texana Nuttall oak 0 40 81 40 0 0 162 0 0 0 0 0 0 40 23 Stem Densities Per Acre by Plot 445 648 445 648 243 243 405 243 243 405 364 364 405 486 396 Table 7. Fifth Annual Plot Monitoring, 2023. Average stem heights (meters + Standard Deviation) of planted sapling species in fourteen 0.0247- acre plots. Dixon Road Mitigation Bank. Species Common Name N D-1 Avg (m) + Std. D-2 Avg (m) + Std. D-3 Avg (m) + Std. D-4 Avg (m) + Std. D-5 Avg (m) + Std. D-6 Avg (m) + Std. D-7 Avg (m) + Std. D-8 Avg (m) + Std. D-9 Avg (m) + Std. D- 10 Avg (m) + Std. D- 11 Avg (m) + Std. D- 12 Avg (m) + Std. D- 13 Avg (m) + Std. D- 14 Avg (m) + Std. Average Stem Height by Species (m+Std ft+Std) Acer negrundo Box elder 10 0.5 0.1 0.4 0.2 0.4+0.1m 1.4+0.4ft Betula nigra River birch 16 1.4 0.8 0.8 0.2 0.9 0.2 3.2 0.9 1.8+1.6m 6.0+5.2ft Carya tomentosa Mockernut hickory 0 0 Celtis laevigata Sugarberry 1 1.3 0.0 1.3+0.0m 4.3+0.0ft Cornus amomum Silky dogwood 2 0.3 0.0 0.3+0.0m 1.0+0.0ft Diospyros virginica American persimmon 0 0 Juglans nigra Black walnut 3 0.5 0.0 0.8 0.0 0.7 0.0 0.7+0.2m 2.2+0.5ft Liriodendron tulipifera Yellow poplar 3 0.4 0.0 0.3 0.0 2.0 0.0 0.4+0.1m 1.2+0.2ft Platanus occidentalis Sycamore 52 3.7 0.6 1.9 0.6 3.1 1.2 0.6 0.4 1.4 0.3 1.4 0.3 3.7 0.3 0.7 0.4 4.6 0.8 2.0 0.8 2.3 0.5 2.3+1.2m 7.4+4.0ft Quercus alba White oak 0 0 Quercus michauxii Swamp chestnut oak 32 1.5 0.8 1.0 0.5 0.9 0.2 1.6 0.0 0.5 0.3 1.9 07 0.7 0.4 1.2 0.2 1.3+0.7m 4.2+2.4ft Quercus pagoda Cherrybark oak 10 1.4 0.4 0.8 0.1 0.4 0.0 1.0 0.6 1.4 0.0 1.8 0.0 1.0+0.4m 3.2+1.3ft Quercus texana Nuttall oak 8 0.9 0.4 1.7 0.0 1.6 0.6 1.1 0.0 1.4+0.5m 4.4+1.ft Average Stem Height by Plot (m+Std) 137 1.3 0.8 1.3 1.3 1.4 0.6 1.6 1.4 0.7 0.4 0.9 0.3 1.5 0.4 0.8 0.3 1.4 0.3 2.5 1.0 0.7 0.3 3.7 1.7 2.0 0.8 1.8 0.7 Species 1.6+1.2m 5.2+3.9ft 15 Table 8. Sapling vigor by species. Vigor was assessed qualitatively by visual inspection of stems; vigor categories were: 4 = excellent, 3 = good, 2 = fair, and 1 = unlikely to survive one year. Dead and missing stems are not reported. Dixon Road Bank, October 2023. 5.0 Comparison of Planted Species in Monitoring Plots From the Year 4 (2022) to the Year 5 (2023) Monitoring Effort A chief difference found between the fourth year (2022) to fifth year (2023) monitoring effort was a decrease in the number stems and density per acre of planted species in four monitoring plots (D-5, D-6, D-8, and D-9); the greatest decline was in Plots D-5 and D-8 (Table 9). These four plots did not meet the minimum required density of 260 stems per acres. The overall average stem density among the 14 monitoring plots was 369 stems per acres, thus meeting the stem density criterion. By species, the greatest stem density changes were declines in sugarberry and Nuttall oak; six other species declined but only slightly (Table 10). Box elder increased, likely due to remedial planting; swamp chestnut oak and cherrybark oak increased slightly most likely due to resprouting from the previous year. Relative densities of the planted species changed little in 2023 because of a somewhat uniform decline by all species. Species Common Name Number of Stems Counted Among All 14 Plots (n) Average Vigor Standard Deviation Acer negrundo Box elder 10 2 0 Betula nigra River birch 16 3 1 Carya tomentosa Mockernut hickory 0 NA NA Celtis laevigata Sugarberry 1 1 0 Cornus amomum Silky dogwood 2 1 0 Diospyros virginica American persimmon 0 NA NA Juglans nigra Black walnut 3 2 1 Liriodendron tulipifera Yellow poplar 3 1 1 Platanus occidentalis Sycamore 52 3 1 Quercus alba White oak 0 NA NA Quercus michauxii Swamp chestnut oak 32 3 1 Quercus pagoda Cherrybark oak 10 3 1 Quercus texana Nuttall oak 8 3 1 All Species Combined 137 3 1 16 Among all thirteen species, stem heights increased an average of 0.2 m from 2021 to 2022. Stem heights for nine species found in the monitoring plots increased or remained the same; all others did not change in stem height (Table 10). 17 Table 9. Comparison of stem count and density per acre in monitoring plots from fourth year (2022) to fifth year (2023) monitoring effort. Positive numbers indicate an increase, negative numbers indicate a decrease. Plot 2022 Stem Count per Plot 2023 Stem Count per Plot Change in Stem Count per Plot 2022 Stem Density per Acre 2023 Stem Density per Plot Change in Stem Density per Acre D-1 12 11 -1 486 445 -41 D-2 12 16 4 486 648 162 D-3 11 11 0 445 445 0 D-4 16 16 0 648 648 0 D-5 10 6 -4 403 243 -160 D-6 8 6 -2 324 243 -81 D-7 10 10 0 405 405 0 D-8 9 6 -3 364 243 -121 D-9 7 6 -1 283 243 -40 D-10 10 10 0 405 405 0 D-11 9 9 0 364 364 0 D-12 9 9 0 364 364 0 D-13 10 10 0 405 405 0 D-14 14 12 -2 567 486 -81 Average 10.5 9.9 -0.6 425 396 -29 18 Table 10. Comparison of stem densities per acre and relative density of planted species monitoring plots from fourth year (2022) to fifth year (2023) monitoring effort. Positive numbers indicate an increase, negative numbers indicate a decrease. Species Common Name 2022 Stem Density per Acre 2023 Stem Density per Acre Change in Stem Density per Acre 2022 Percent Relative Density 2023 Percent Relative Density Change Percent Relative Density Acer negrundo Box elder 14 29 15 3 7 4 Betula nigra River birch 49 46 -3 12 12 0 Carya tomentosa Mockernut hickory 0 0 0 0 0 0 Celtis laevigata Sugarberry 17 3 -14 4 1 -3 Cornus amomum Silky dogwood 12 6 -6 3 1 -2 Diospyros virginica American persimmon 3 0 -3 1 0 -1 Juglans nigra Black walnut 12 9 -3 3 2 -1 Liriodendron tulipifera Yellow poplar 12 9 -3 3 2 -1 Platanus occidentalis Sycamore 156 150 -6 37 38 1 Quercus alba White oak 0 0 0 0 0 0 Quercus michauxii Swamp chestnut oak 89 93 4 20 23 3 Quercus pagoda Cherrybark oak 24 29 5 7 7 0 Quercus texana Nuttall oak 35 23 -12 8 6 -2 All Species 425 396 -29 100 100 0 19 Table 11. Comparison of stem heights of planted species in monitoring plots from third year (2021) to fourth year (2022) monitoring effort. Species Common Name 2021 Average Stem Height (meters) 2022 Average Stem Height (meters) Change in Average Stem Height (meters) Acer negrundo Box elder 0 0.4 0.4 Betula nigra River birch 1.2 1.5 0.3 Carya tomentosa Mockernut hickory 0 0 0 Celtis laevigata Sugarberry 0.3 0.3 0 Cornus amomum Silky dogwood 0.4 0.3 -0.1 Diospyros virginica American persimmon 0 0 0 Juglans nigra Black walnut 0.5 0.4 -0.1 Liriodendron tulipifera Yellow poplar 0.6 0.5 -0.1 Platanus occidentalis Sycamore 1.4 1.9 0.5 Quercus alba White oak 0 0 0 Quercus michauxii Swamp chestnut oak 0.8 0.6 -0.2 Quercus pagoda Cherrybark oak 0.5 0.7 0.2 Quercus texana Nuttall oak 0.7 1.0 0.3 Average Stem Heights for All Species (m) 1.0m (3.3ft) 1.2m (3.9ft) 0.2m (0.7ft) 20 6.0 Overall Site Conditions at the Fifth Year (2023) Monitoring Period In October 2023, the Bank site had been colonized by herbaceous and volunteer woody vegetation (volunteer persimmon especially) with planted saplings and naturally colonizing tree and shrub species interspersed. The dominant herbaceous species were goldenrod, mares-tail, dogfennel and blackberry; shrubs included wax myrtle and groundsel. The tree saplings planted in March 2019 and 2020 had yet to overtop or shade out the herbaceous vegetation. Prior to planting, the site was disked leaving a rough textured microtopography which tended to retain rainwater, these soil conditions were still present in 2023. GES established additional boundary markers and signage. Supplemental planting was conducted in 2020 with the purpose of increasing species richness and density in underperforming portions of the Bank. While generally successful in terms of stem density in the monitoring plots, species richness was inadequate in the majority of the monitoring plots and did not meet performance goals. In Tract 1, portions of the tract, especially in areas west of the stream have been heavily colonized by loblolly pines (Appendix A). In Tract 2, the northwestern portion of the tract has been heavily colonized by sweetgum. GES will attempt to alleviate this above-ground competition by manually chopping and sawing small to moderate stems, and / or injecting herbicide into the stems using a bark injection (“hack and squirt”) technique on the larger stems. The soil conditions at the Bank site are not favorable for most planted stems. The dense clay soil and poor soil fertility apparently inhibit adequate root development; this coupled with heavy grazing and rubs by deer are likely the reasons for not meeting performance standards. GES will seek further guidance from NC-DWR to help achieve Bank close-out approval. 7.0 Long-term Management Greene Environmental Services has established a permanent conservation easement, approved by DWR, for the Bank. The conservation easement is filed at the Beaufort County, NC Register of Deeds, Deed Book: 1989, Pages 744-753 and dated May 17, 2019. Signage has been installed at prominent locations along farm roads and paths to identify the Bank tracts as protected, conservation areas. The signs will be maintained by Greene Environmental Services, LLC for the 21 duration of the five-year monitoring period. The signs list prohibited activities within the Bank (e.g., mowing or cutting vegetation, excavation or deposition of spoil material, vehicular traffic, etc.), as well as contact information for Greene Environmental Services, LLC. Easement boundaries were identified in the field to ensure clear distinction between the Bank and adjacent properties. Boundaries were identified by posts, signs and flagging. Boundary markers that are disturbed, damaged, or destroyed will be repaired and/or replaced on an as-needed basis. Greene Environmental Services, LLC is responsible for Bank maintenance and monitoring to ensuring that the terms of a conservation easement are met for five years, beginning in 2019 and ending in 2023, or until NC-DWR approves a final oversight closeout. GES (Bank Sponsor) will transfer the conservation easement to a NC-DWR - approved land trust or similar land management agency (Grantor). The Grantor will assume the responsibilities of maintaining the conservation easement and the integrity of Bank boundaries using posts, bollards, and signage identifying the Grantor as the responsible entity. The Grantor will conduct annual sight visits to inspect the Bank parcel and maintain records to that effect. 8.0 Riparian Buffer and Nutrient Offset Mitigation Potential The Bank is located in Tar-Pamlico River, Pamlico Sub-basin, HUC 03020104 (Figure 2). Riparian buffer and nutrient offset mitigation credits are available for development activities requiring mitigation in this HUC only unless otherwise determined by NC-DWR and/or other NC Department of Environmental Quality agencies. The acreage of the Bank totals 16.70 acres. Of that total, 6.31 acres yields Tar- Pamlico riparian buffer credits. Nutrient offset acreage has been adjusted as per guidance from NC-DWR to yield 10.01 acres of nitrogen and phosphorus nutrient offset credits. Riparian buffer credits are yielded on a per square foot basis, thus 275,040 square feet (6.31 acres) for the Bank (Table 12). Nitrogen (N) and phosphorus (P) credits are yielded at a rate of 2,273.02 lbs-N/acre and 146.40 lbs-P/acre, respectively. Thus, 10.01 acres of nutrient offset acreage yields 22,843.841 pounds of nitrogen (N) credits and 1,471.32 pounds of phosphorus (P) credits (Table 12). The Bank Sponsor (GES) maintains and keeps updated, three credit ledgers; one ledger will be for riparian buffer credits, one ledger for nitrogen nutrient offset credits and one ledger for phosphorus nutrient offset credits. 22 For this site, all riparian areas proposed in Table 12 for riparian restoration were determined by NC-DWR to be in agriculture. Therefore, 16.70 acres of riparian restoration credits shown in Table 12, can be used for either Tar-Pamlico riparian buffer credits or nutrient offset credits, but not both. The Sponsor (GES) must submit a written request and receive written approval from NC-DWR prior to any credit conversions or transfers to the buffer and nutrient offset credit ledgers. Figures and Appendices Figure 1. Vicinity map for the Dixon Road Mitigation Bank. Figure 2. Bank within HUC Figure 3. Regional aerial image. Figure 4. Dixon Road Bank tracts. Figure 5. Conservation easement boundary survey. Figure 6. Credit determination map. Figure 6-A Credit determination map, excerpt of Tract 1 Figure 6-B Credit determination map, excerpt of Tract 2 Figure 7. USGS Hackney Quadrangle Figure 7-A. USGS Hackney Quadrangle excerpt. Figure 8. Soil map of Bank site Figure 9. Monitoring plot locations. Appendix A: Plot Data Tables Appendix B: Plot maps, species lists and photographs Appendix C: Individual Stem Data 2022 Table 12. Dixon Road Riparian Buffer and Nutrient Offset Mitigation Bank, Project Number: 2018-0466 v2 Project Area N Credit Conversion Ratio (ft2/pound) P Credit Conversion Ratio (ft2/pound) Credit Type Location Subject? (enter NO if ephemeral or ditch 1) Feature Type Mitigation Activity Min-Max Buffer Width (ft)Feature Name Total Area (ft2) Total (Creditable) Area of Buffer Mitigation (ft2) Initial Credit Ratio (x:1)% Full Credit Final Credit Ratio (x:1) Convertible to Riparian Buffer? Riparian Buffer Credits Convertible to Nutrient Offset? Delivered Nutrient Offset: N (lbs) Delivered Nutrient Offset: P (lbs) Buffer Rural Yes I / P Restoration 0-100 Stream 1 171,687 171,687 1 100%1.00000 Yes 171,687.000 Yes 8,958.857 577.020 Buffer Rural Yes I / P Restoration 0-100 Stream 2 103,353 103,353 1 100%1.00000 Yes 103,353.000 Yes 5,393.098 347.357 Nutrient Offset Rural Yes I / P Restoration 101-200 Stream 1 171,191 171,191 1 33%3.03030 No —Yes 8,932.975 575.353 Nutrient Offset Rural Yes I / P Restoration 101-200 Stream 2 266,587 266,587 1 33%3.03030 No —Yes 13,910.866 895.967 ——— ——— ——— ——— ——— ——— ——— ——— ——— ——— ——— ——— ——— ——— ——— Totals (ft2):712,818 712,818 275,040.000 37,195.796 2,395.697 Total Buffer (ft2):275,040 275,040 Total Nutrient Offset (ft2):437,778 N/A Total Ephemeral Area (ft2) for Credit:0 0 Total Eligible Ephemeral Area (ft2):68,760 0.0%Ephemeral Reaches as % TABM Enter Preservation Credits Below Total Eligible for Preservation (ft2):91,680 0.0%Preservation as % TABM Credit Type Location Subject?Feature Type Mitigation Activity Min-Max Buffer Width (ft)Feature Name Total Area (sf) Total (Creditable) Area for Buffer Mitigation (ft2) Initial Credit Ratio (x:1)% Full Credit Final Credit Ratio (x:1) Riparian Buffer Credits Buffer — — — — — Preservation Area Subtotals (ft2):0 0 Square Feet Credits 275,040 275,040.000 0 0.000 0 0.000 275,040 275,040.000 Square Feet Credits Nitrogen:22,843.841 Phosphorus:1,471.320 Tar-Pamlico 03020104 19.16394 297.54099 Restoration: Enhancement: Mitigation Totals 437,778 TOTAL AREA OF BUFFER MITIGATION (TABM) TOTAL NUTRIENT OFFSET MITIGATION Mitigation Totals Nutrient Offset: Preservation: Total Riparian Buffer: 1. The Randleman Lake buffer rules allow some ditches to be classified as subject according to 15A NCAC 02B .0250 (5)(a). last updated 08/03/2020 HUC: 03020104 Dixon Road Bank Tar- Pamlico River Basin Figure 1. Tar-Pamlico River Basin indicating the location of the Dixon Road Bank within HUC 03020104. Tar-Pamlico River Basin in North Carolina Figure 2. Service Area Dixon Road Bank location within HUC 03020104. Dixon Road Bank Figure 3. Regional aerial image depicting the location of the proposed Bank (red square). Chocowinity Creek Chocowinity Bay Pamlico River Estuary Figure 4. Tracts 1 and 2 comprising the 16.70-acre Bank within a 22.49-acre property parcel (Beaufort County GIS parcel # 46392). Riparian buffer credit zones (red shading) extend from the top of banks of Stream 1 and 2 landward to 100 feet (red line). Nutrient offset credit zones (yellow shading) extent from the top of banks along Ditches 3 and 5 to a maximum of 200 feet (black lines) and along Streams 1 and 2 from the riparian buffer zones landward to a maximum of 200 feet. Greene Environmental Services, LLC. Tract 1 8.05 acres Tract 2 8.65 acres Parcel # 46392 22.49 acres Ditch 5 Ditch 3 Stream 2 Stream 1 Ditch 4 Coordinates 35.458096 x -77.076848 Figure 5. Boundary survey depicting conservation easement boundaries (blue arrows) for Tracts 1 and 2. Figure 6. Credit determination map depicting riparian buffer acreage (blue arrows) and nutrient offset acreage (green arrows). (See Tables 1 and 8-A and 8-B), also see map excerpts in Figures 6-A and 6- B). Figure 6-A. Tract 1 credit determination map excerpt depicting 1) riparian buffer acreage (blue arrows) from the top of banks along Stream 1 landward to 100 feet, and 2) nutrient offset acreage (green arrows) from the riparian buffer zone landward to a maximum of 200 feet. (See Tables 1 and 8-A and 8-B). Stream 1 Figure 6-B. Tract 2 credit determination map excerpt depicting 1) riparian buffer acreage (blue arrows) from the top of banks along Stream 2 landward to 100 feet, and 2) nutrient offset acreage (green arrows) from the top of banks along Ditches 3 and 5 landward to a maximum of 200 feet and along Stream 2 from the riparian buffer zone landward to a maximum of 200 feet. (See Tables 1 and 8-A and 8-B). Stream 2 Ditch 3 Ditch 5 0 miles 0.25 0.5 1.0 1.5 Hackney, NC USGS 7.5’ Quadrangle 2013 Figure 7. Hackney, NC USGS 7.7’ Quadrangle 2013. The Dixon Road Bank is located within the red square; an excerpt of the Bank location is in Figure 7-A. Figure 7-A. USGS, Hackney, NC 7.5’ Quadrangle, excerpt. The proposed bank is within the red polygon. Streams 1 and 2, and Ditches 3and 4 are depicted. Ditch 5 is not indicated on the USGS Quadrangle. The blue line labelled as NA is not present as a waterway on the site based on field observations. 3 4 1 2 NA Figure 8. Mapped soil series at the proposed Dixon Road Mitigation Bank (red polygon); from the Beaufort County, NC, GIS /Land Records website (http://co.beaufort.nc.us/departments/community-services/planning/gis-land-records). Mapped soil series are: Craven clay loam (CsC2), Craven fine sandy loam (CrB), and Leaf silt loam (Le). Figure 9. Approximate locations of fourteen, 0.0247-acre (10mx10m) monitoring plots at the Dixon Road Bank. Coordinates for the plot locations are provided in Table 4. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Tract 1 Tract 2 Riparian Buffer Nutrient Offset N Appendix A. Plot Tables Individual stems data for all planted stems in each of the 14 plots at the Dixon Road Bank. Naturally colonizing species are listed below the table. Plot 1. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 9 Cornus amomum 1 0.3 1 10 C. amomum 2 1 0.3 1 1.0 81 18 0.3 0.0 1.0 0.0 1 Quercus michauxii 2 1.3 3 2 Q. michauxii 1 1.7 4 3 Q. michauxii 3 4 5 Q. michauxii 1 2.2 4 6 Q. michauxii 2 1.1 3 7 Q. michauxii 1 0.8 2 11 Q. michauxii 7 1 0.7 2 3.1 283 64 1.5 0.8 5.1 2.7 8 Quercus pagoda 1 1.6 3 12 Q. pagoda 2 2 1.1 3 3.0 81 18 1.4 0.4 4.4 1.2 Totals/Average 11 2.7 445 100 1.3 0.8 4.2 2.7 Naturally colonizing species and heights: 4 loblolly pine (heights: 1.0m to <3m); ~40 sweetgum (heights: >1m to 3m) Plot 2. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 13 Acer negrundo 1 0.7 2 14 A. negrundo 1 0.5 2 15 A. negrundo 1 0.3 1 16 A. negrundo 1 0.4 2 17 A. negrundo 1 0.5 2 18 A. negrundo 1 0.5 2 19 A. negrundo 7 1 0.4 2 1.9 283 47 0.5 0.1 1.5 0.4 1 Betula nigra 1 2.2 4 5 B. nigra 2 1.3 3 6 B. nigra 3 1 0.6 1 2.7 121 20 1.4 0.8 4.5 2.6 11 Juglans nigra 1 1 0.5 2 3.5 40 7 0.5 0.0 1.6 0.0 12 Liriodendron tulipifera 1 1 0.4 1 1.0 40 7 0.4 0.0 1.3 0.0 2 Platanus occidentalis 4 4 4 P. occidentalis 4 4 10 P. occidentalis 3 3 4 121 20 3.7 0.6 12.0 1.9 Totals / Average 15 2.4 607 100 1.3 1.3 4.2 4.4 Naturally colonizing species and heights: 3 loblolly pine (heights: >1.0mto <1.5m.); 1 sweetgum (height: 1.5m) Plot 3. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 3 Platanus occidentalis 1 1.3 3 4 P. occidentalis 1 2.1 3 5 P. occidentalis 2.6 4 9 P. occidentalis 4 2.7 4 3.5 162 36 2.2 0.6 7.1 2.1 1 Quercus michauxii 1 1.1 3 2 Q. michauxii 1 0.4 2 6 Q. michauxii 1 0.7 2 7 Q. michauxii 1 1.8 4 8 Q. michauxii 5 2 1.2 2 2.6 202 45 1.0 0.5 3.4 1.7 10 Quercus texana 1 0.8 2 11 Q. texana 2 2 0.9 2 2.0 81 18 0.9 0.1 2.8 0.2 Totals/ Average 11 2.8 445 100 1.4 0.6 4.7 2.1 Naturally colonizing species and heights: 4 loblolly pine (heights: >1m to <2m)); 6 sweetgum (heights: >1m to <3m) Plot 4. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 9 Acer negrundo 1 0.2 1 14 A. negrundo 1 0.5 2 19 A. negrundo 3 1 0.4 2 1.7 121 19 0.4 0.2 1.2 0.5 16 Juglans nigra 1 1 0.8 2 2.0 40 6 0.8 0.0 2.6 0.0 2 Platanus occidentalis 2.9 4 3 P. occidentalis 4.4 4 4 P. occidentalis 3.7 4 5 P. occidentalis 2 1.2 3 6 P. occidentalis 2 2.1 3 7 P. occidentalis 6 4.1 4 3.7 243 38 3.1 1.2 10.1 4.1 8 Quercus michauxii 2 1 2 20 Q. michauxii 2 1 0.7 2 2.0 81 13 0.9 0.2 2.8 0.7 10 Quercus pagoda 1 0.9 3 11 Q. pagoda 1 0.7 2 21 Q. pagoda 3 1 0.8 2 1.1 121 19 0.8 0.1 2.6 0.3 12 Quercus texana 1 1 1.7 3 3.0 40 6 1.7 0.0 5.6 0.0 Totals / Average 16 2.7 648 100 1.6 1.4 5.4 4.6 Naturally colonizing species and heights: 1 loblolly pine (height: 1m) Plot 5. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 1 Celtis laevigata 1 1 1.3 1 1 40 17 1.3 0.0 4.3 0.0 9 Liriodendron tulipifera 1 1 0.3 1 1 40 17 0.3 0.0 4.3 0.0 4 Platanus occidentalis 1 1 2 5 P. occidentalis 1 0.2 2 6 P. occidentalis 3 1 0.7 2 2 121 50 0.6 0.4 2.1 1.3 12 Quercus pagoda 1 1 0.4 1 1 40 17 0.4 0.0 4.3 0.0 Totals / Average 6 2 243 100 0.7 0.4 2.1 1.4 Naturally colonizing species and heights: 5 loblolly pine (heights: >1.0m to <2.5m); 3 sweetgum (>1m to <1.5m) Plot 6. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 1 Betula nigra 1 0.7 1 3 B. nigra 2 1 2 6 B. nigra 0.9 2 8 B. nigra 4 1 0.6 2 1.75 162 67 0.8 0.2 2.6 0.6 13 Quercus pagoda 1 1.4 3 15 Q. pagoda 2 1 0.6 2 2.5 81 33 1.0 0.6 3.3 1.9 Totals / Average 6 2 243 100 0.9 0.3 2.8 1.0 Naturally colonizing species and heights: 10 loblolly pine (heights: >1.0m to <4.0m) Plot 7. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 1 Platanus occidentalis 1 1.2 2 3 P. occidentalis 1 1.7 3 4 P. occidentalis 1 1.5 2 11 P. occidentalis 4 1 1.1 2 2.3 162 44 1.4 0.3 4.5 0.9 5 Quercus michauxii 1 1 1.6 3 3.0 40 11 1.6 0.0 5.2 0.0 14 Quercus pagoda 1 1 1.4 3 3.0 40 11 1.4 0.0 4.6 0.0 8 Quercus texana 2 2.3 4 12 Q. texana 1 1.5 3 13 Q. texana 1 1.6 3 15 Q. texana 4 1 0.9 3 3.3 162 44 1.6 0.6 5.2 1.9 Totals / Average 9 2.8 364 100 1.5 0.4 4.9 1.3 Naturally colonizing species and heights: 13 loblolly pine (heights: >1.0m to <3.0m); 15 sweetgum (2.0m) Plot 8. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 2 Betula nigra 1 1.2 2 3 B. nigra 1 0.8 2 6 B. nigra 3 1 0.8 2 2.0 121 50 0.9 0.2 3.1 0.8 12 Quercus michauxii 1 0.7 2 14 Q. michauxii 2 1 0.3 1 1.5 81 33 0.5 0.3 1.6 0.9 13 Quercus pagoda 1 2 0.8 3 3.0 40 17 0.8 0.0 2.6 0.0 Total / Average 6 243 100 0.8 0.3 2.5 0.9 Naturally colonizing species and heights: 15 loblolly pine (heights: >1.0m to <3.0m); 1 sweetgum (1.5m) Plot 9. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 1 Platanus occidentalis 1 1.2 2 2 P. occidentalis 1 1.1 2 5 P. occidentalis 1 1.6 3 6 P. occidentalis 1.8 3 7 P. occidentalis 1 1.5 3 8 P. occidentalis 6 1 1.2 3 243 100 1.4 0.3 4.6 0.9 Total / Average 6 2.7 243 100 1.4 0.3 4.6 0.9 Naturally colonizing species and heights: 30 loblolly pine (heights: >1.0m to <4.0m); 3 sweetgum (>1m to <2.0m) Plot 10. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 2 Platanus occidentalis 3.6 4 8 P. occidentalis 4 4 9 P. occidentalis 3 3.4 4 4.0 121 30 3.7 0.3 12.0 1.0 1 Quercus michauxii 2.9 4 3 Q. michauxii 2 2.2 4 4 Q. michauxii 1 1.4 3 5 Q. michauxii 1 1.9 4 6 Q. michauxii 2.2 4 7 Q. michauxii 1 2.3 4 10 Q. michauxii 7 2 0.7 3 3.7 283 70 1.9 0.7 6.4 2.3 Total / Average 10 3.8 405 100 2.5 1.0 8.1 3.4 Plot 11. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 10 Liriodendron tulipifera 1 1 0.4 2 2.0 40 11 2.0 0.0 6.6 0.0 1 Platanus occidentalis 1 1 2 2 P. occidentalis 1 0.9 2 7 P. occidentalis 3 1 0.3 2 2.0 121 33 0.7 0.4 2.4 1.2 3 Quercus michauxii 1 0.3 1 5 Q. michauxii 1 1.1 3 6 Q. michauxii 1 0.4 2 8 Q. michauxii 1 1 2 11 Q. michauxii 5 1 0.5 2 2.0 202 56 0.7 0.4 2.2 1.2 Total / Average 9 2.0 364 100 0.7 0.3 2.2 1.1 Naturally colonizing species and heights: 20 loblolly pine (heights: >1.0m to <4.0m); 5 sweetgum (>1m to <2.0m) Plot 12. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 3 Betula nigra 5.2 4 5 B. nigra 1 0.9 3 6 B. nigra 1 0.9 3 7 B. nigra 3.6 4 8 B. nigra 5 4 9 B. nigra 6 3.5 4 3.7 243 67 3.2 1.9 10.4 6.2 1 Platanus occidentalis 5 4 2 P. occidentalis 5.2 4 4 P. occidentalis 3 3.7 4 4.0 121 33 4.6 0.8 15.2 2.7 Total / Average 9 3.8 364 100 3.7 1.7 12.0 5.6 Naturally colonizing species and heights: 7 loblolly pine (heights: >1.0m to <3.0m); 6 sweetgum (>1m to <4.0m); 1 persimmon (1.5m); 1 Bradford pear (1.5m) Plot 13. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 1 Platanus occidentalis 2.5 4 2 P. occidentalis 1 1.3 3 3 P. occidentalis 1 2 3 4 P. occidentalis 1 1 3 5 P. occidentalis 1 1.4 3 6 P. occidentalis 1 1.5 3 7 P. occidentalis 1 1.8 3 8 P. occidentalis 2 2.4 4 9 P. occidentalis 3.6 4 10 P. occidentalis 10 2.9 4 3.4 405 100 2.0 0.8 6.7 2.7 Total / Average 10 3.4 405 100 2.0 0.8 6.7 2.7 Naturally colonizing species and heights: 15 loblolly pine (heights: 1.0m to <3.0m); 12 persimmon (>1.0m to <3.0m) Plot 14. Dixon Road Bank, 5th Annual Report, October 2023. Stem ID Species N Dia. At Dm. Ht (cm) Dia. At Breast Ht (cm) Total Stem Ht (m) Vigor Avg Vigor by Species Stems per Acre by Species Species Relative Density Avg Ht by Species (m) StD Ht by Species (m) Avg Ht by Species (ft) StD Ht by Species (ft) 2 Juglans nigra 1 1 0.7 1 1 40 8 0.7 0.0 2.3 0.0 4 Platanus occidentalis 1 2.4 4 5 P. occidentalis 1 2.1 3 6 P. occidentalis 2.5 4 7 P. occidentalis 1 1.9 3 8 P. occidentalis 1 1.6 3 9 P. occidentalis 2.7 4 10 P. occidentalis 7 2.9 4 4 283 58 2.3 0.5 7.5 1.5 12 Quercus michauxii 1 1.2 3 13 Q. michauxii 1 1.3 3 16 Q. michauxii 3 1 1 3 3 121 25 25.0 0.2 82.0 0.5 11 Quercus texana 1 1 1.1 2 2 40 8 1.1 0.0 3.6 0.0 Total / Average 12 3 486 100 1.8 0.7 5.8 2.4 Naturally colonizing species and heights: 20 loblolly pine (heights: >1.0m to <4.0m); 10 sweetgum (>1m to <3.0m) Appendix B Plot Maps, Species List and Plot Photographs for the Fifth Annual Monitoring Year (2023) Dixon Road Riparian Buffer and Nutrient Offset Mitigation Bank PLOT: DIX-1 October 2023 Plant ID Number Species 1 Swamp chestnut oak 2 Swamp chestnut oak 3 Swamp chestnut oak 4 Walnut DEAD 5 Swamp chestnut oak 6 Swamp chestnut oak 7 Swamp chestnut oak 8 Cherrybark oak 9 Silky dogwood 10 Silky dogwood 11 Swamp chestnut oak 12 Cherrybark oak 1 2 3 4 5 12 7 9 11 6 5 8 10 PLOT: DIX-2 October 2023 Plant ID Number Species 1 River birch 2 Sycamore 3 Nuttall oak DEAD 4 Sycamore 5 River birch 6 River birch 7 Sugarberry DEAD 8 Sugarberry DEAD 9 Sugarberry DEAD 10 Sycamore 11 Black walnut 12 Yellow poplar DEAD 13 Box elder 14 Box elder 15 Box elder 16 Box elder 17 Box elder 18 Box elder 19 Box elder 1 2 3 4 5 6 7 9 10 11 12 8888 88 8 16 13 14 15 19 18 17 PLOT: DIX-3 October 2023 Plant ID Number Species 1 Swamp chestnut oak 2 Swamp chestnut oak 3 Sycamore 4 Sycamore 5 Sycamore 6 Swamp chestnut oak 7 Swamp chestnut oak 8 Swamp chestnut oak 9 Sycamore 10 Nuttall oak 11 Nuttall oak 1 2 3 4 5 6 7 8 9 10 11 PLOT: DIX-4 October 2023 Plant ID Number Species 1 Sugarberry 2 Sycamore 3 Sycamore 4 Sycamore 5 Sycamore 6 Sycamore 7 Sycamore 8 Swamp chestnut oak 9 Box elder 10 Cherrybark oak 11 Cherrybark oak 12 Nuttall oak 13 Yellow poplar 14 Box elder 15 Missing 16 Walnut 17 Missing 18 Missing 19 Box elder 20 Swamp chestnut oak 21 Cherrybark oak 1 2 3 4 5 6 7 8 9 11 12 13 10 21 19 16 20 14 PLOT: DIX-5 October 2023 Plant ID Number Species 1 Sugarberry 2 Sycamore DEAD 3 Sugarberry DEAD 4 Sycamore 5 Sycamore 6 Sycamore 7 Sugarberry 8 Sugarberry 9 Yellow poplar 10 Silky dogwood DEAD 11 Yellow polar DEAD 12 Cherrybark oak 13 Cherrybark oak DEAD 1 2 3 4 11 6 7 8 9 10 5 13 12 PLOT: DIX-6 October 2023 Plant ID Number Species 1 River birch 2 River birch DEAD 3 River birch 4 Sugarberry DEAD 5 River birch DEAD 6 River birch 7 Sugarberry DEAD 8 River birch 9 River birch DEAD 10 Sugarberry DEAD 11 Sugarberry DEAD 12 Yellow poplar DEAD 13 Cherrybark oak 14 Persimmon DEAD 15 Cherrybark oak 1 2 3 4 5 6 7 15 10 9 11 12 14 13 8 PLOT: DIX-7 October 2023 Plant ID Number Species 1 Sycamore 2 Swamp chestnut oak DEAD 3 Sycamore 4 Sycamore 5 Swamp chestnut oak 6 Swamp chestnut oak DEAD 7 Sugarberry 8 Nuttall oak 9 Sugarberry DEAD 10 Sugarberry DEAD 11 Sycamore 12 Nuttall oak DEAD 13 Nuttall oak 14 Cherrybark oak 15 Nuttall oak 16 Missing 1 2 3 4 5 6 7 8 10 9 11 12 13 14 15 16 PLOT: DIX-8 October 2023 Plant ID Number Species 1 River birch DEAD 2 River birch 3 River birch 4 River birch DEAD 5 River birch DEAD 6 River birch 7 Sugarberry DEAD 8 Sugarberry DEAD 9 Sugarberry DEAD 10 Silky dogwood DEAD 11 Swamp chestnut oak DEAD 12 Swamp chestnut oak DEAD 13 Cherrybark oak 14 Swamp chestnut oak 1 2 3 4 5 6 7 8 9 10 1 11 12 13 14 PLOT: DIX-9 October 2023 Plant ID Number Species 1 Sycamore 2 Sycamore 3 Black walnut DEAD 4 Black walnut DEAD 5 Sycamore 6 Sycamore 7 Sycamore 8 Sycamore 9 Sycamore DEAD 10 Black walnut DEAD 1 2 3 4 5 6 7 8 9 10 PLOT: DIX-10 October 2023 Plant ID Number Species 1 Swamp chestnut oak 2 Sycamore 3 Swamp chestnut oak 4 Swamp chestnut oak 5 Swamp chestnut oak 6 Swamp chestnut oak 7 Swamp chestnut oak 8 Sycamore 9 Sycamore 10 Swamp chestnut oak 1 2 3 4 5 6 7 8 9 10 PLOT: DIX-11 October 2023 Plant ID Number Species 1 Sycamore 2 Sycamore 3 Swamp chestnut oak 4 Sycamore DEAD 5 Swamp chestnut oak 6 Swamp chestnut oak 7 Sycamore 8 Swamp chestnut oak 9 Yellow poplar DEAD 10 Yellow poplar 11 Swamp chestnut oak 1 2 3 4 5 6 7 8 10 9 11 PLOT: DIX-12 October 2023 Plant ID Number Species 1 Sycamore 2 Sycamore 3 River birch 4 Sycamore 5 River birch 6 River birch 7 River birch 8 River birch 9 River birch 10 Silky dogwood DEAD 1 2 3 4 5 6 7 8 9 10 PLOT: DIX-13 October 2023 Plant ID Number Species 1 Sycamore 2 Sycamore 3 Sycamore 4 Sycamore 5 Sycamore 6 Sycamore 7 Sycamore 8 Sycamore 9 Sycamore 10 Sycamore 11 Nuttall oak DEAD 12 Nuttall oak DEAD 1 2 PLOT: DIX-14 October 2023 Plant ID Number Species 1 Black walnut DEAD 2 Black walnut 3 Black walnut DEAD 4 Sycamore 5 Sycamore 6 Sycamore 7 Sycamore 8 Sycamore 9 Sycamore 10 Sycamore 11 Nuttall oak 12 Cherrybark oak 13 Swamp chestnut oak 14 Nuttall oak DEAD 15 Nuttall oak DEAD 16 Swamp chestnut oak 1 2 3 4 5 6 7 9 8 10 12 11 16 13 Appendix C. Individual stem data (total height) at the end of the 2022 growing season, Dixon Road Bank. Plot 1 Plot 2 Plant ID Number Species Height (m) Status 1 River birch 1.2 2 Sycamore 3.5 3 Nuttall oak 1.1 4 Sycamore 4.0 5 River birch 1.1 6 River birch 2.3 7 Sugarberry - Dead 8 Sugarberry - Dead 9 Sugarberry - Dead 10 Sycamore 3.0 11 Black walnut 0.4 12 Yellow poplar - Dead 13 Box elder 0.4 14 Box elder 0.4 15 Box elder 0.3 16 Box elder 0.4 Plant ID Number Species Height (m) Status 1 Swamp chestnut oak 0.6 2 Swamp chestnut oak 1.3 3 Swamp chestnut oak 2.5 4 Walnut - Dead 5 Swamp chestnut oak 1.2 6 Swamp chestnut oak 0.9 7 Swamp chestnut oak 0.7 8 Cherrybark oak 1.2 9 Silky dogwood 0.4 10 Silky dogwood 0.3 11 Swamp chestnut oak 0.4 12 Cherrybark oak 0.6 13 Persimmon 1.2 Plot 3 Plant ID Number Species Height (m) Status 1 Swamp chestnut oak 1.2 2 Swamp chestnut oak 0.3 3 Sycamore 1.0 4 Sycamore 2.0 5 Sycamore 2.2 6 Swamp chestnut oak 0.3 7 Swamp chestnut oak 1.2 8 Swamp chestnut oak 1.3 9 Sycamore 2.5 10 Nuttall oak 1.0 11 Nuttall oak 0.5 Plot 4 Plant ID Number Species Height (m) Status 1 Sugarberry 0.2 2 Sycamore 2.3 3 Sycamore 4.0 4 Sycamore 3.0 5 Sycamore 1.8 6 Sycamore 1.2 7 Sycamore - Dead 8 Swamp chestnut oak 1.0 9 Sycamore - Dead 10 Cherrybark oak 0.5 11 Cherrybark oak 0.6 12 Nuttall oak 1.1 13 Yellow poplar 0.7 14 Box elder 0.3 15 Swamp chestnut oak 0.3 16 Walnut 0.4 17 Sycamore 3.0 18 Sycamore 3.0 Plot 5 Plant ID Number Species Height (m) Status 1 Sugarberry DEAD - Dead 2 Sycamore 0.2 3 Sugarberry DEAD - Dead 4 Sycamore 1.0 5 Sycamore 0.4 6 Sycamore 0.5 7 Sugarberry 0.3 8 Sugarberry 0.3 9 Yellow poplar 0.3 10 Silky dogwood 0.1 11 Yellow polar DEAD - Dead 12 Cherrybark oak 0.3 13 Cherrybark oak 0.3 Plot 6 Plant ID Number Species Height (m) Status 1 River birch 0.6 2 River birch DEAD - Dead 3 River birch 1.0 4 Sugarberry 0.3 5 River birch DEAD - Dead 6 River birch 0.6 7 Sugarberry 0.4 8 River birch 0.8 9 River birch DEAD - Dead 10 Sugarberry DEAD - Dead 11 Sugarberry DEAD - Dead 12 Yellow poplar - Dead 13 Cherrybark oak 1.0 14 Persimmon DEAD - Dead 15 Cherrybark oak 0.4 Plot 7 Plant ID Number Species Height (m) Status 1 Sycamore 1.1 2 Swamp chestnut oak DEAD - Dead 3 Sycamore 1.2 4 Sycamore 1.2 5 Swamp chestnut oak 1.0 6 Swamp chestnut oak - Dead 7 Sugarberry - Dead 8 Sugarberry 1.2 9 Sugarberry DEAD - Dead 10 Sugarberry DEAD - Dead 11 Sycamore 1.0 12 Nuttall oak DEAD - Dead 13 Nuttall oak 1.3 14 Cherrybark oak 1.3 15 Nuttall oak 1.0 16 Nuttall oak 1.2 Plot 8 Plant ID Number Species Height (m) Status 1 River birch DEAD - Dead 2 River birch 0.8 3 River birch 1.2 4 River birch DEAD - Dead 5 River birch 0.6 6 River birch 1.0 7 Sugarberry 0.2 8 Sugarberry DEAD - Dead 9 Sugarberry 0.2 10 Silky dogwood 0.4 11 Swamp chestnut oak DEAD - Dead 12 Swamp chestnut oak DEAD - Dead 13 Cherrybark oak 0.8 14 Swamp chestnut oak 0.3 Plot 9 Plant ID Number Species Height (m) Status 1 Sycamore 1.2 2 Sycamore 1.2 3 Black walnut 0.2 4 Black walnut DEAD dead 5 Sycamore 1.3 6 Sycamore 1.8 7 Sycamore 1.3 8 Sycamore 1 9 Sycamore DEAD dead 10 Black walnut DEAD dead Plot 10 Plant ID Number Species Height (m) Status 1 Swamp chestnut oak 2.2 2 Sycamore 3.4 3 Swamp chestnut oak 1.6 4 Swamp chestnut oak 1.1 5 Swamp chestnut oak 1.3 6 Swamp chestnut oak 2.1 7 Swamp chestnut oak 1.8 8 Sycamore 3.5 9 Sycamore 3 10 Swamp chestnut oak 0.4 Plot 11 Plant ID Number Species Height (m) Status 1 Sycamore 0.7 2 Sycamore 1 3 Swamp chestnut oak 0.2 4 Sycamore DEAD dead 5 Swamp chestnut oak 0.6 6 Swamp chestnut oak 0.4 7 Sycamore 0.4 8 Swamp chestnut oak 0.6 9 Yellow poplar 0.4 10 Yellow poplar 0.4 Plot 12 Plant ID Number Species Height (m) Status 1 Sycamore 4 2 Sycamore 5 3 River birch 4 4 Sycamore 2.5 5 River birch 1 6 River birch 0.5 7 River birch 2.5 8 River birch 4 9 River birch 3 10 Silky dogwood DEAD dead Plot 13 Plant ID Number Species Height (m) Status 1 Sycamore 2.2 2 Sycamore 1.2 3 Sycamore 1.9 4 Sycamore 1 5 Sycamore 1.2 6 Sycamore 1.5 7 Sycamore 1.6 8 Sycamore 2.3 9 Sycamore 3.5 10 Sycamore 2.5 11 Nuttall oak DEAD dead 12 Nuttall oak DEAD dead Plot 14 Plant ID Number Species Height (m) Status 1 Black walnut DEAD dead 2 Black walnut 0.4 3 Black walnut DEAD dead 4 Sycamore 1.2 5 Sycamore 1.2 6 Sycamore 2.3 7 Sycamore 1.4 8 Sycamore 1.1 9 Sycamore 2 10 Sycamore 2.2 11 Nuttall oak 1 12 Cherrybark oak 1.3 13 Swamp chestnut oak 1.1 14 Nuttall oak 1.2 15 Nuttall oak 1 16 Swamp chestnut oak 0.5