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