The URL can be used to link to this page

Home My WebLink About20170537 Ver 1_SAW201501799_Neu-ConUMBI_HannahBridge_MY5_MonitoringReport_20231031360o Glenwood Ave, Suite ioo res Raleigh, NC 2'7612 Corporate Headquarters 6575 West Loop South, Suite 300 Bellaire, TX 77401 Main: 713.520.5400 October 30, 2023 Kim Isenhour U.S. Army Corps of Engineers Regulatory Division 3331 Heritage Trade Drive, Suite 105 Wake Forest, NC 27587 Hannah Bridge Year 5 Monitoring Report (SAW-2015-01799) Kim, Please find attached the Hannah Bridge Year 5 Monitoring Report. In Year 5, all 20 vegetation plots met the 260 stems per acre success criteria. Bankfull events were recorded on all three stage recorders and the flow gauge documented 152 consecutive flow days in Year 5. One ground water well was added to provide supplementary hydrology data. Five of the 16 groundwater wells and neither of the two reference groundwater wells met the 12 percent hydroperiod success criteria. GW1, GW6, GWB, and GW13 remain "at -risk" due to consecutive years of hydroperiods less than five percent. While the majority of 2023 has experienced normal precipitation levels, the winter was abnormally dry. RES believes the dry winter prevented groundwater supplies from recharging fully during the year and is partially the reason for some continued low hydroperiods across the site. RES expects more normal hydroperiods to return in MY6. If this does not become the case, RES would like the IRT's input on exploring other options including modifying the instrument to remove the areas from wetland credit and exploring the potential of adding these areas to the Buffer Mitigation Plan with DWR approval. In the meantime, RES is not asking for the release of any wetland credits for MY5. Comments from Year 4 Credit Release: Casey Haywood, USACE: 1. Three encroachments were identified this year, two were addressed with the installation of new fencing and easement markers. Will new fencing and easement markers also be installed in the area where the horse pasture was constructed north of H131 once the landowner removes it from the easement? Yes. New easement markers will be installed where the horse pasture was once the landowner moves the fence line to outside the easement. 2. Thank you for providing more information and a map identifying wetlands at risk. Eleven out of 13 groundwater gauges did not meet success this year. Below average rainfall also contributed to decreased wetland hydrology this year. No wetland credits are being requested at this time. Hydrology has improved after a year of normal precipitation, although not as much as RES had anticipated. No wetland credits are being requested at this time. res.us 0 Please discuss the proposed easement adjustment shown on Figure 2 in the narrative. I know this has been discussed previously with IRT so it may be helpful to include any correspondence in an appendix. A short discussion on the matter has been included in section 1.7. Correspondence regarding the adjustment can be found in Appendix F. 4. Noted that a supplemental planting around veg plot 16 was performed in February 2022, and approximately 4.7 acres of the site was controlled/treated for privet, sweetgum, and loblolly pine. Please capture some of the treated areas with random plots in the MY5 report. Random veg plot 1 was taken in a treated area, and random veg plot 2 was taken within the area of supplemental planting. RES is requesting a 10% stream credit release (446.600 SMUs) for the submission of the Year 5 Monitoring Report. RES is not requesting the release of any wetland credits at this time. Thank you, Jamey McEachran I Regulatory Manager Attachments: 1) Updated Bank Credit Release Schedule, 2) Updated Stream Ledger, 3) Updated Wetland Ledger Project Name: Sponsor Name: USACE Action ID: NCDWQ Action ID: Hannah Bridge EBX-Nesuel SAW-2015-01799 2017-0537v1 Wilmington District Mitigation Bank Credit Release Schedule County: 8-Digit HUC: Year Project Instituted: Date Prepared: Total Potential Credits Credit Classification Stream Credits Forested Wetland Credits Wetland Warm Water Cool Water Cold Water Riparian Riverine Riparian Non-Riverine Non -Riparian Coastal Potential Credits from Mitigation Plan 4,643.00 10.73 Potential Credits from As -Built Survey 4,643.00 10.73 Johnston 3020201 6/27/2018 10/26/2023 Current and Future Credit Releases Stream Credits Forested Wetland Credits Non -Forested Wetland Credits Projected Actual Release Credit Release Milestone Scheduled Releases Warm Water Cool Water Cold Water Scheduled Releases Riparian Riverine Riparian Non-Riverine Non -Riparian Scheduled Releases Coastal Release Date Date 1(Bank/Site Establishmentf,2 15% 846.90 35% 2-23 15% 10/11/2018 2 (Year 0/As-Built)' 4§% 679.99 4§% 440 15% 8/12/2019 3 (Year 1 Monitoring) 10% 446.600 10% 3:00 10% 12/19/2019 4 (Year 2 Monitoring) 10% 446.600 10% 4-Go 15% 11/20/2020 5(Year 3 Monitoring) 10% 446.600 1.50 20% 11/31/2021 11/16/2021 6 (Year 4 Monitoring) §% 223.300 5% 0.50 10% 12/31/2022 2/3/2023 7 (Year 5 Monitoring) 10% 446.600 15% 1.50 15% 12/31/2023 8 (Year 6 Monitoring) 5% 446.600 % 0.50 NA NA 12/31/2024 9 (Year 7 Monitoring) 10% 223.300 10% 1.00 NA NA 12/31/2025 Stream Bankfull Standard 10% 446 500 NA NA NA NA NA NA Dec-22 Total Credits Release to Date 2856.70 4643 1 5.73 10.73 Contingencies (if any): Wetland Credits are on hold until further information is provided Signature of Wilmington District Official Approving Credit Release 1- The first credit release milestone is based on the potential credits stated in the approved mitigation plan. 2 - The first credit release shall occur upon establishment of the mitigation bank, which includes the following criteria: 1) Execution of the MBI or UMBI by the Sponsor and the USACE; 2) Approval of the final Mitigation Plan; 3) Mitigation bank site must be secured; 4) Delivery of the financial assurances described in the Mitigation Plan; 5) Recordation of the long-term protection mechanism and title opinion acceptable to the USACE; 6) 404 permit verification for construction of the site, if required. 3 - The second credit release is based on the credit totals from the as -built survey, and may differ slightly from the credit totals stated in the mitigation plan. 4 - A 15% reserve of credits to be held back until the bankfull event performance standard has been met. Date Transaction Credits Released Credits Debited Number To Bank From Bank HANNAH BRIDGE STREAM CREDIT LEDGER (HUC 03020201) Friday, October 6, 2023 Current Credits Credit Balance Reserved Purchaser Contract Permit Number Date Closing Date HUC 846.900 Credits Released: Task 1 10/11/18 670.000 Credits Released: Task 2 8/12/19 446.600 Credits Released: Task 3 12/19/19 446.600 Credits Released: Task 4 11/19/20 446.600 Credits Released: Task 5 11/19/21 669.800 Credits Released: Task 6 2/1/23 Total 3526.500 0.000 1 3526.500 1 0.000 NEU-CON UMBRELLA WETLAND AND STREAM MITIGATION BANK HANNAH BRIDGE WETLAND CREDIT LEDGER (HUC 03020201) Thursday, April 20, 2023 Riparian Wetland Transaction Credits Released Credits Debited Current Credits Number To Bank From Bank Credit Balance Reserved Purchaser 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Total 2.230 1.500 1.000 1.000 5.730 Credits Released: Task 1 0.230 Lennar Carolinas, LLC Triangle Town Center Townhomes Credits Released: Task 2 0.600 Pulte Group 540 West 0.460 RBV Investments LLC Redhawk Landing Credits Released: Task 3 0.010 River Dell Company Phase 6 of The Village at Flowers Plantation 0.600 NASH Wendell Falls, LLC Wendell Falls, Outfall D 0.380 KB Home Raleigh Partin Place, Phase 7 0.330 Pulte Home Company, LLC Regency at Heritage 1.180 DR Horton Westect Way Road Extension 0.620 851 South Main LLC South Main Office Credits Released: Task 4 0.030 River Dell Company, Inc. Village at Flowers Plantation, Phase 8 0.480 Cambridge -Garner, LLC Rand Village 0.260 Carolina Land Group LLC McKenzie Meadows 0.200 KB Home Raleigh -Durham Inc. Olive Branch West 0.350 Lennar Carolinas, LLC Cayden Cove 5.730 1 0.000 1 0.000 Permit Number SAW-2018-00416 SAW-2018-00955 SAW-2018-02289 SAW-2008-01712 SAW-2020-0010 SAW-2016-00096 SAW-2014-01136 SAW-2019-01374 SAW-2015-01832 SAW-2008-01712 SAW-2017-01429 SAW-2019-01416 SAW-2019-01699 SAW-2021-00027 osing Date 10/11/18 7/9/19 8/12/19 9/23/19 10/7/19 12/19/19 12/27/19 2/19/20 3/13/20 3/23/20 5/28/20 6/4/20 11/19/20 11 /20/20 12/21/20 3/26/21 5/17/22 7/19/22 Ah Table of Contents 1.o Project Summary........................................................................................................................................... 1 1.1 Project Location and Description................................................................................................... 1 1.2 Project Goals and Objectives..........................................................................................................2 1.3 Project Success Criteria..................................................................................................................2 StreamSuccess Criteria......................................................................................................................... 3 WetlandSuccess Criteria.......................................................................................................................3 VegetationSuccess Criteria................................................................................................................... 3 1.4 Project Components........................................................................................................................4 1.5 Design/Approach............................................................................................................................ 5 Stream..................................................................................................................................................... 5 Wetland.................................................................................................................................................. 6 1.6 Construction and As -Built Conditions...........................................................................................6 1.7 Year 5 Monitoring Performance (MY5)......................................................................................... 6 Vegetation............................................................................................................................................... 7 StreamGeomorphology......................................................................................................................... 7 StreamHydrology.................................................................................................................................. 7 WetlandHydrology................................................................................................................................8 2.0 Methods......................................................................................................................................................... 9 3.o References.....................................................................................................................................................11 Appendix A: Background Tables Table 1: Project Mitigation Components Table 2: Project Activity and Reporting History Table 3: Project Contacts Table Table 4: Project Background Information Figure 1: Site Location Map Appendix B: Visual Assessment Data Figure 2: Current Conditions Plan View Vegetation Plot Photos Monitoring Device Photos Appendix C: Vegetation Plot Data Table 5: Planted Species Summary Table 6: Vegetation Plot Mitigation Success Summary Table 7 Stem Count Total and Planted by Plot Species Appendix D: Stream Measurement and Geomorphology Data Cross -Section Plots Table 8. Baseline Stream Data Summary Table 9. Cross Section Morphology Data Table Appendix E: Hydrology Data Table 10. 2022 - 2023 Rainfall Summary Table ii. Documentation of Geomorphically Significant Flow Events MY5 Stream Flow Hydrograph Table 12. 2023 Max Hydroperiod Table 13. Summary of Groundwater Monitoring Results Historic Drought Conditions of Johnston County Figure 3: Well Success Map MY5 Groundwater Well Hydrographs Appendix F: Easement Adjustment Correspondence with the IRT regarding change in conservation easement Hannah Bridge Year 5 Monitoring Report Stream and Wetland Mitigation Site October 2023 i.o Project Summary 1.1 Project Location and Description The Hannah Bridge Stream and Wetland Mitigation Site (the Site) is located within a watershed dominated by agricultural land use in Johnston County, North Carolina, approximately 5 miles south of the town of Four Oaks. The project streams and wetlands were significantly impacted by channelization and cattle access. The project involves the restoration and protection of streams in the Neuse River watershed and the restoration and enhancement of adjacent riparian wetlands. The purpose of this mitigation site is to restore and enhance a stream/wetland complex located within the Neuse River Basin. The Site was constructed in concurrence with the Hannah Bridge Riparian Buffer and Nutrient Offset Mitigation Bank. The Site lies within USGS Hydrologic Unit Code (HUC) 03020201 (USGS, 2012) and within the North Carolina Division of Water Resources (NCDWR) Neuse River Sub -basin 03-04-02 (NCDENR, 2005). The 2010 Neuse River Basin Plan (NRBP) identified the Hannah Creek watershed (HUC 03020201150020) as a Targeted Local Watershed (TLW), a watershed that exhibits both the need and opportunity for wetland, stream, and riparian buffer restoration. The total easement area is 46.2 acres. The wooded areas along the easement corridor designated for restoration activities were classified as mixed hardwoods. Invasive species were present throughout the wooded areas. Channels restored were degraded to a point where they no longer accessed their floodplain, lacked riparian buffers, allowed livestock access, and aquatic life was not supported. Additionally, the riparian buffer was in poor condition throughout most of the project area where it was devoid of trees or shrubs and pasture was present up to the edge of the pre -construction channel. The Site includes Priority I restoration, Enhancement Level I, Enhancement Level 11, and Preservation. Priority I restoration reaches incorporate the design of a single -thread meandering channel, with parameters based on data taken from the reference site described above, published empirical relationships, NC Coastal Plain Regional Curves, and hydrologic and hydraulic analyses. The Site includes wetland restoration, enhancement, and preservation. Wetland restoration occurs adjacent to Priority I stream restoration reaches. The restoration approach was to reconnect the floodplain wetlands to the stream, fill existing ditches, rough the floodplain surface, and plant native tree and shrub species commonly found in small stream swamp ecosystems. The wetland enhancement treatment primarily excludes livestock, improves hydrology via pond removal and ditch plugging and planting native tree and shrub species. The Site is to be monitored on a regular basis and a physical inspection of the Site will be conducted at a minimum of twice per year throughout the seven-year post -construction monitoring period, or until performance standards are met. These site inspections will identify site components and features that require routine maintenance. The measure of stream restoration success will be documented by bankfull flows and no change in stream channel classification. Sand bed channels are dynamic and minor adjustments to dimension and profile are expected. The measure of vegetative success for the Site will be the survival of at least 210 seven -year -old planted trees per acre with an average height of 10 feet at the end of year seven of the monitoring period. Upon approval for closeout by the Interagency Review Team (IRT), the Site will be transferred to the North Carolina Wildlife Habitat Foundation (NCWHF). The NCWHF will be responsible for periodic inspection of the Site to ensure that restrictions required in the Conservation Easement, or the deed restriction Hannah Bridge i Year 5 Monitoring Report Stream and Wetland Mitigation Site October 2023 document(s) are upheld. Endowment funds required to uphold easement and deed restrictions will be negotiated prior to site transfer to the responsible party. 1.2 Project Goals and Objectives The 2010 Neuse River Basin Restoration Priorities (RBRP) identified several restoration needs for the entire Neuse River Basin, as well as for HUC 03020201, specifically. The Hannah Creek watershed (HUC 03020201150020) was identified as a Targeted Local Watershed (TLW), a watershed that exhibits both the need and opportunity for wetland, stream, and riparian buffer restoration. The Hannah Creek watershed includes 34 square miles of watershed area, with forty-two percent of the 102 stream miles lacking wooded buffers. Fifty-four percent of the watershed is used for agricultural purposes and seven percent is currently developed. The Site was identified as a stream and buffer restoration opportunity to improve water quality, habitat, and hydrology within the Neuse River Basin. This project is intended to provide Stream Mitigation Units to be applied as compensatory mitigation for unavoidable authorized impacts to waters of the US under Section 404 of the Clean Water Act (33 U.S.C. 1344) and support the overall goal of "no net loss" of aquatic resources in the United States. The Site is located within the downstream end of HUC 03020201 and includes streams that directly discharge into Hannah Creek. The overarching goal of this project is to address major watershed stressors identified in the 2010 Neuse RBRP for this TLW by promoting nutrient and sediment reduction in agricultural areas by restoring and preserving streams, wetlands, and riparian buffers and improve functional uplift to the ecosystem. The project design goals and objectives, including restoration of riparian buffers to filter runoff from agricultural operations and improve terrestrial habitat, and construction of in -stream structures to improve habitat diversity, will address the degraded water quality and nutrient input from farming. The project goals will be addressed through the following project objectives: • Increase forested riparian buffers to at least fifty feet on both sides of the channel along the project reach with an appropriate riparian plant community (a Coastal Plain Small Stream Swamp diverse mix of species). • Increase plant species diversity and eradicate invasive species within the project boundaries. • Improve flood bank connectivity by reducing bank height ratios and increase entrenchment ratios to reference reach levels. • Reduce sediment supply from eroding stream banks in order to restore channel stability by restoring the stream channel pattern, dimension, and profile in stream channels to reference reach conditions. • Reduce impact of livestock to the stream channels and runoff through the increase in the livestock exclusion. • Restore stable flow dynamics by improving stream velocity and shear stress to levels between the critical shear stress (shear stress required to initiate motion) and the allowable limits 1.3Project Success Criteria The Site follows the USACE 2003 Stream Mitigation Guidelines and the 'Wilmington District Stream and Wetland Compensatory Mitigation Update" dated October 24, 2016. Cross section and vegetation plot data will be collected in Years 0, 1, 2, 3, 5, and 7. Stream and wetland hydrology data and visual monitoring will be reported annually. Hannah Bridge 2 Year 5 Monitoring Report Stream and Wetland Mitigation Site October 2023 Stream Success Criteria Four bankfull flow events must be documented within the seven-year monitoring period. The bankfull events must occur in separate years. Otherwise, the stream monitoring will continue until four bankfull events have been documented in separate years. There should be little change in as -built cross -sections. If changes do take place, they should be evaluated to determine if they represent a movement toward a less stable condition (for example down -cutting or erosion) or are minor changes that represent an increase in stability (for example settling, vegetative changes, deposition along the banks, or 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. Bank height ratio shall not exceed 1.2, and the entrenchment ratio shall be no less than 2.2 within restored reaches. Channel stability should be demonstrated through a minimum of four bankfull events documented in the seven-year monitoring period. Digital images will be used to subjectively evaluate channel aggradation or degradation, bank erosion, success of riparian vegetation, and effectiveness of erosion control measures. Longitudinal images should not indicate the absence of developing bars within the channel or an excessive increase in channel depth. Lateral images should not indicate excessive erosion or continuing degradation of the banks over time. A series of images over time should indicate successional maturation of riparian vegetation. Wetland Success Criteria The Natural Resources Conservation Service (NRCS) has a current WETS table for Johnston County upon which to base a normal rainfall amount and average growing season. The closest comparable data station was determined to be the WETS station for Smithfield, NC. The growing season for Johnston County is 233 days long, extending from March 18 to November 6, and is based on a daily minimum temperature greater than 28 degrees Fahrenheit occurring in five of ten years. Based upon field observation across the site, the NRCS mapping units show a good correlation to actual site conditions in areas of the site. Mitigation guidance for soils in the Coastal Plain suggests a hydroperiod for the Bibb soil of 12-16 percent of the growing season. The hydrology success criterion for the Site is to restore the water table so that it will remain continuously within 12 inches of the soil surface for at least 12 percent of the growing season (approximately 27 days) at each groundwater gauge location. Vegetation Success Criteria Specific and measurable success criteria for plant density within the riparian buffers on the Site will follow IRT Guidance. Vegetation monitoring plots will be a minimum of 0.02 acres in size and cover a minimum of two percent of the planted area. Vegetation monitoring will occur between July 111 and leaf drop. The interim measures of vegetative success for the site will be the survival of at least 320 planted three-year old trees per acre at the end of Year 3, 260 five-year old trees at the end of Year 5 with an average height of seven feet, and the final vegetative success criteria will be 210 trees per acre with an average height of 10 feet at the end of Year 7. Height measurement success criteria do not apply to the understory trees or shrubs. Volunteer trees will be counted, identified to species, and included in the yearly monitoring reports, but will not be counted towards the success criteria of total planted stems. Hannah Bridge 3 Year 5 Monitoring Report Stream and Wetland Mitigation Site October 2023 1.4Project Components The project area is comprised of two separate easement locations along multiple drainage features that flow into Hannah Creek. The northern easement area captures a single tributary to Hannah Creek and a portion of its headwaters. The southern easement area is separated from the northern area by an active agricultural field and is divided into three different areas due to a utility crossing and a culvert crossing. The stream and wetland mitigation components are summarized below and in Table 1. Mitigation Plan Stream Credits Mitigation Mitigation Stationing Existing Plan Mitigatio Reach SMUs Type (Mitigation Plan) Length (LF) Length n Ratio (LF) HB1 Restoration 0+15 to 1+31 99 117 1:1 117 145 4 HB1 Restoration 1+63 to 1,385 1,284 1:1 1,284 18+ 3 H1132 Enhancement II 14+45 to 392 392 2.5:1 157 H1133 Restoration 18+37 to 46+4 1,588 1,807 1:1 1,807 423 6 H1134 Enhancement 1 36+84 to 579 579 1.5:1 386 44 +9 H1134 Preservation 42+63 to 228 228 10:1 23 16+04 HF1 Preservation 2+18 to 1,386 1,386 10:1 139 HF2 Preservation 6+40 to 7+89 149 149 10:1 15 TH3 Enhancement 1 0+63 to 7+79 716 716 1:1 716 Total 6,522 6,658 4,643 Restoration Credit Mitigation Plan Wetland Credits Mitigation Type Total Acres Mitigation Ratio WMUs Re-establishment 3.27 1:1 3.27 Enhancement - High 12.37 2:1 6.18 Enhancement - Low 4.25 3:1 1.42 Preservation 7.27 10:1 0.73 Protection 2.55 No Credit 0.00 29.71 11.58 Hannah Bridge 4 Year 5 Monitoring Report Stream and Wetland Mitigation Site October 2023 1.5Design/Approach Stream The Site includes Priority I restoration, Enhancement Level I, Enhancement Level II, and Preservation. Priority I restoration reaches incorporate the design of a single -thread meandering channel, with parameters based on data taken from the reference site, published empirical relationships, NC Coastal Plain Regional Curves, and hydrologic and hydraulic analyses. As a result of the restoration of planform and dimension, frequent overbank flows, and a restored riparian buffer provide the appropriate hydrology and sediment transport throughout this Coastal Plain watershed. All non -vegetated areas within the easement were planted with native vegetation and any areas of invasive species were removed and/or treated. Reach HB1 — Reach begins at western limits of project totaling 1,430 linear feet but is adjusted to 1,400 linear feet due to a 30-foot break in the easement due to an overhead power line. Priority I Restoration was used for Reach HB1 which included relocating the channel towards the north, such that it meanders within the middle of the valley. Reach HB2 (STA 14+45 to STA 18+37) — Reach begins at the end of HB1 and flows northeast to the confluence with Reach HB3 totaling 392 linear feet. Enhancement Level II was used for Reach HB2, beginning approximately 200 feet downstream of the confluence with HF1. Minimal grading and live stake planting were required in the few areas that exhibited bank erosion. Invasive species were treated and removed during construction, and those areas were replanted with native riparian vegetation. Reach HB3 (STA 18+37 to STA 36+44) — Reach immediately downstream of Reach HB2 and flows east to an existing farm crossing totaling 1,807 linear feet. Priority I Restoration was used for Reach HB3 to address historic straightening and irregular banks resulting from cattle impacts. The design approach included meandering the channel within the natural valley and backfilling the existing stream. Reach HB4 (STA 36+84 to STA 42+63; STA 42+63 to 44+91) — Reach beginning at farm crossing just downstream of Reach HB3 and flows north to its confluence with Hannah Creek. A combination of Enhancement I and Preservation was used for Reach HB4 downstream of the easement break. Enhancement I was used for over 500 feet beginning downstream of the easement break, and Preservation was used for the channel from the Enhancement I section to the confluence with Hannah Creek. The design approach included installing log structures at various points along the channel to raise the channel invert within the upper section. Because the channel was previously channelized and relocated to the west side of the valley, the structures allow flows to frequently inundate the valley floor and existing wetlands located to the east. A floodplain bench was also constructed along the left bank within the enhancement section. Reach HF1 (STA 2+18 to STA 13+58; STA 13+58 to 16+04) — Reach beginning in a forested area in the southern portion of the project and flows north until its confluence with Reach HB1 totaling 1,386 linear feet. Preservation was used for Reach HF1 because the majority of the channel is stable throughout the easement and provides a variety of aquatic habitats. Reach HF2 (STA 6+40 to STA 7+89) — Reach beginning in agricultural field in the southern portion of the project and flows north until its confluence with Reach HF1 totaling 149 linear feet of Preservation. Hannah Bridge 5 Year 5 Monitoring Report Stream and Wetland Mitigation Site October 2023 • Reach TH3 (STA 0+63 to STA 7+79) — Reach begins just downstream of disturbed wetlands and an existing farm crossing located at the top of the project. The reach flows to the east into Hannah Creek totaling 716 linear feet. Enhancement Level I was used on Reach TH3. The design approach on this reach focused on improving the riparian buffer and in -stream habitat and floodplain benching. Construction activities included cutting a floodplain bench along the south side of the channel along the upper reach and installing grade control and woody debris structures throughout to improve vertical stability and aquatic habitat. Wetland The Site offers a total ecosystem restoration opportunity. As such, the wetland restoration and enhancement is closely tied to the stream restoration. The Site provides 10.73 WMUs through a combination of wetland restoration, enhancement, and preservation treatments. Because of the soil characteristics and variations observed throughout the site, the primary wetland restoration activities, at a 1:1 credit ratio, were plugging the existing channel and constructing a stream channel at a higher elevation that elevates shallow groundwater depths and more frequently floods adjacent wetlands. Additional backfilling to create shallow depressions within the old channel and removal of spoil from pond excavation along the floodplains aids in the restoration of a natural floodplain surface relative to the surrounding landscape. Surface roughening and creation of shallow depressions throughout the restoration area provides an appropriate landscape for diverse habitat. Due to compaction and long term agricultural use, a shallow ripping of the surface to a depth of 6 to 8 inches was called for to allow adequate porosity for infiltration and storage and provide microtopographic relief. Wetland enhancement is located along the floodplains of the stream restoration and enhancement reaches within the jurisdictional wetland areas. The construction of a farm pond had altered surface drainage and placed spoil across the floodplain. As part of the wetland enhancement, this pond was removed, and hydrology was redirected towards the forested and grazed wetlands. The existing pasture areas on the Site were treated with wetland enhancement at a credit ratio of 2:1. A credit ratio of 3:1 was used for the grazed, forested wetland areas. The wetland mitigation treatment was primarily re -planting the disturbed pastures as forested wetlands and excluding livestock from the pasture and grazed forested wetlands. Enhancement activities included: reconnecting low-lying areas of hydric soil with the floodplain, farm pond removal, planting native tree and shrub species commonly found in small stream swamp ecosystems, and surface roughening to increase infiltration and storage. For the pond removal, the pond will be drained before breaching the dam and removing all existing PVC pipe. Per direction of the engineer, it is expected that excess spoil from the project will be placed within the existing pond footprint. 1.6Construction and As -Built Conditions Stream construction and planting was completed in May 2019. The Hannah Bridge Mitigation Site was built to design plans and guidelines. Project credits are based on design centerline, but as -built stream lengths are shown on Table 1. The as -built survey is attached in the Baseline Monitoring Report and includes a redlined version. 1.7 Year 5 Monitoring Performance (MY5) The Hannah Bridge Year 5 Monitoring activities were performed in May and September 2023. All Year 5 Monitoring data is present below and in the appendices. The Site is on track to meeting vegetation and stream success criteria, but not wetland interim criteria. Hannah Bridge 6 Year 5 Monitoring Report Stream and Wetland Mitigation Site October 2023 Vegetation Monitoring of the 17 fixed vegetation plots (VP) and three random vegetation plots (RVP) was completed during September 2023. Vegetation data are in Appendix C, associated photos are in Appendix B, and plot locations are in Appendix B. MY5 monitoring data indicates that all 20 plots are exceeding the interim success criteria of 260 planted stems per acre. Planted stem densities ranged from 364 to 1,093 planted stems per acre with a mean of 652 planted stems per acre across all plots. A total of 18 species were documented within the plots. Volunteer species were reported in 10 plots. The average planted stem height was 12.6 feet. Visual assessment of vegetation outside of the monitoring plots indicates that the herbaceous vegetation is becoming well established throughout the project. A few areas of Chinese privet (Ligustrum sinense), sweetgum (Liquidambarstyracif(ua), and loblolly pine (Pinus taeda) were noted during monitoring activities, most notable near Veg plots 8 and 17. These areas will be treated before the 2024 growing season. Additional treatment will continue throughout the life of the Project when necessary to ensure that the invasive and nuisance species are not compromising the growth and overall health of the native, planted trees. The small horse pasture that was partially within the easement north of 1-1131 has been discussed with the landowner and RES is assisting with moving the fence to the easement boundary before the 2024 growing season. New easement markers and signs have been installed to mark where the fence needs to be. Only one other instance of encroachment was noted during monitoring; a small corner near VP17 is missing a corner marker. This will be re -installed before the 2024 growing season. The conservation easement adjustment adjacent to the powerline easement discussed in previous years is still being processed. RES has gained approval from all parties to enact the change in order to allow permanent access to the powerline easement. Correspondence about the matter is included in Appendix F. Stream Geomorphology Geomorphology data for MY5 was collected during May 2023. Summary tables and cross section plots are in Appendix D. Overall, the MY5 cross sections relatively match the MYO cross sections. Cross sections 17 and 18 are offset from previous year's data due to a survey inaccuracy. All measurements indicate that both cross sections are stable. All reaches were designed as sand bed channels and remain classified as sand bed channels. Visual assessment of the stream channel was performed to document signs of instability, such as eroding banks, structural instability, or excessive sedimentation. The stream repair that occurred on 1-1134 in February 2022 remains stable. The channel is transporting sediment as designed and will continue to be monitored for aggradation and degradation. Stream Hydrology During MY5, bankfull events were recorded on all three stage recorders. Stage Recorder 1-1131 recorded six with a maximum event of 1.45 feet, Stage Recorder 1-1133 recorded seventeen with a maximum event of 2.18 feet, and Stage Recorder 1-1134 recorded nine with a maximum event of 1.14 feet. The flow gauge on TH3 recorded 152 consecutive flow days and 255 cumulative flow days. Gauge locations are in Figure 2 and the associated data is in Appendix E. Hannah Bridge 7 Year 5 Monitoring Report Stream and Wetland Mitigation Site October 2023 Wetland Hydrology In May 2023 one new monitoring well was installed, GW14 in Wetland 14, this was done to better represent hydrology in areas where historic data contradicts field observations. Five of the sixteen groundwater wells met the 12 percent hydroperiod success criteria. Four out of the sixteen groundwater wells and the two reference groundwater wells had a hydroperiod between 5-11%. RES feels these four wells are especially relevant as a lot of these areas were enhancement areas and were not for restoration credit. Seven of the sixteen groundwater wells had a hydroperiod of 5% or less. The hydroperiods of the sixteen groundwater wells ranged from 1 to 29 percent and the two reference groundwater wells ranged from 7 to 8 percent. Generally, hydrology has improved onsite since last year's drought, although hydroperiods are not as high as hoped after a year of more normal precipitation. This is potentially due to the dry winter that was experienced in Johnston county from November 2022 to February 2023. RES believes the dry winter after a drought prevented some of the groundwater recharge needed for groundwater level to be maintained for at least 12% of the growing season. This is evidenced by the reference wells having a lower hydroperiod than in years past. So, while 2023 was a year of normal precipitation for most months, the wetland systems have not been able to fully recover from 2022 and conditions are not normal. The drought conditions for Johnston County from the National Integrated Drought Information System website can be found in Appendix E. A breakdown of well success by wetland is as follows: Wetland 1 (Enhancement High, 5.76 acres) — High Risk • GW1 recorded a 3% hydroperiod in MY5 which increased from MY4 1% hydroperiod. • GW11 recorded an 8% hydroperiod in MY5 and has had mixed success over the years with it having a 3% hydroperiod in MY4, and a 13% hydroperiod in MY3. • GW14 recorded a 4% hydroperiod and was just installed in July 2023 therefore the data is not showing the full growing season. • Vegetation noted in this wetland includes Juncus effusus, Polygonum pensylvanicum, Carex sp., Beohmeria cylindrica, and Scirpus cyperinus. Wetland 4 (Enhancement Low, 1.72 acres) — Moderate Risk • GW2 recorded a 4% hydroperiod in MY5 but historically has had higher hydroperiods. o This well is not expected to reach the 12% hydroperiod criteria based on the performance of the reference well just upstream. GW2 and RGW1 have historically had very similar hydroperiods. RES expects that this area is a jurisdictional wetland and will display a hydroperiod between 7 and 9%. • GW3 recorded a 14% hydroperiod in MY5 and has had successful hydroperiods in MY1-MY3 as well. • RES believes this wetland needs additional time to recharge after the drought of 2022, and should have higher hydroperiods in Monitoring Years 6 and 7. Wetland 5 (Enhancement High, .97 acres) — No Risk • GW5 recorded a 29% hydroperiod and has been considered successful every year. This wetland gauge and surrounding area is not of concern, based on the past year's hydroperiods and wetland characteristics in the area. Wetland 6 (Enhancement High, 3.78 acres) — Low Risk • GW4 recorded a 7% hydroperiod but historically has been successful MY1-MY3. • Hydrophytic vegetation has been recorded in the area including Boehmeria cylindrica, Arundinaria sp., Carex sp., and Nyssa sylvatica. • RES believes this wetland needs more time to recharge after the drought of 2022. Winter groundwater levels were higher at the beginning of 2022 than they were in 2023, leading to a dryer Hannah Bridge 8 Year 5 Monitoring Report Stream and Wetland Mitigation Site October 2023 start to the 2023 growing season and a smaller hydroperiod. Additionally, according to Web Soil Survey, this well is located within the Lynchburg soil series. Lynchburg is a slightly more well drained series than Bibb, with a typical hydroperiod ranging from 7-9%. With the dryer start of the 2023 growing season, and the somewhat poorly draining soil series, GW4 experienced a shorter hydroperiod than normal. A normal winter after a more normal precipitation year will hopefully return this wetland's hydroperiod to above 12% next year. Wetland 10 (Enhancement High, 1.35 acres) — Moderate Risk • GW10 recorded a 4% hydroperiod which is an improvement from last years hydroperiod. • GW10-B recorded a 17% hydroperiod and was also successful last year. This wetland gauge is not of concern, based on the past year's hydroperiods and wetland characteristics in the area. Wetland 14 (Re-establishment, 3.27 acres) — Moderate Risk Right Bank - low risk • GW7 recorded a 16% hydroperiod and was also successful in MY3. • GW12 recorded a 20% hydroperiod and was also successful in MY3. • GW13 recorded a 6% hydroperiod, this could be due to at -risk areas surrounding the well. Left Bank - high risk • GW6 recorded a 2% hydroperiod which is an improvement from MY4. The nearby ditch has been plugged in to try and improve hydrology. Nearby vegetation includes species of Juncus and Carex. • GW8 recorded a 1% hydroperiod which could be due to it being on the border with an at -risk area of the wetland. Surrounding vegetation includes Juncus effusus and Polygonum pensylvanicum. • GW8-B recorded a 2% hydroperiod. Surrounding vegetation includes species of Juncus and Carex, Populus deltoides, Salix nigra, and Taxodium distichum. • GW9 recorded an 8% hydroperiod which is an improvement from MY4. Well success can be seen on Figure 3 in Appendix E. Groundwater well locations can be found in Figure 2 and the associated data is in Appendix E. 2.0 Methods Stream monitoring was conducted using a Topcon GTS-312 Total Station. Three-dimensional coordinates associated with cross-section data were collected in the field (NAD83 State Plane feet FIPS 3200). Morphological data were collected at 20 cross -sections. Survey data were imported into CAD, ArcGIS®, and Microsoft Excel® for data processing and analysis. The stage recorders include an automatic pressure transducer flow gauge and a manual crest gauge. The flow gauges were installed within the channel and will record flow conditions at an hourly interval. The manual crest gauges were installed on the bank at the bankfull elevation. During quarterly visits to the Site, the height of the corkline will be recorded. Automatic pressure transducer data from the flow gauges will be corrected using bankfull recordings from the crest gauges to produce the stage of the channel at hourly intervals. The stage recorder on H134 does not have a manual crest gauge and the bankfull events are reported using the elevation of the top of bank. The flow gauge on the intermittent stream is corrected using the elevation of the downstream riffle to detect stream flow. Vegetation success is being monitored at 17 fixed vegetation plots and three random vegetation plots. Vegetation plot monitoring follows the CVS-EEP Level 2 Protocol for Recording Vegetation (Lee et al. 2008) and includes analysis of species composition and density of planted species. Data are processed using the CVS data entry tool. In the field, the four corners of each plot were permanently marked with PVC at the origin and metal conduit at the other corners. Photos of each plot are to be taken from the origin each monitoring year. The random plots are to be collected in locations where there are no fixed vegetation Hannah Bridge 9 Year 5 Monitoring Report Stream and Wetland Mitigation Site October 2023 plots. Random plots will most likely be collected in the form of 100 square meter belt transects with variable dimensions. Tree species and height will be recorded for each planted stem and the transects will be mapped and new locations will be monitored in subsequent years. Wetland hydrology is monitored to document success in wetland restoration and enhancement areas (as requested by NCIRT). This is accomplished with 15 automatic pressure transducer gauges (located in groundwater wells) that record daily groundwater levels. Thirteen have been installed within the wetland crediting area and two within reference wetland areas. One automatic pressure transducer is installed above ground for use as a barometric reference. Gauges are downloaded quarterly and wetland hydroperiods are calculated during the growing season. Well installation followed current regulatory guidance. Visual observations of primary and secondary wetland hydrology indicators are also recorded during quarterly site visits. Hannah Bridge 10 Year 5 Monitoring Report Stream and Wetland Mitigation Site October 2023 3.o References Environmental Laboratory. 1987. U.S. Army Corps of Engineers Wetlands Delineation Manual, Technical Report Y-87-1. U.S. Army Engineer Waterways Experiment Station, Vicksburg, Mississippi. Harman, W., R. Starr, M. Carter, K. Tweedy, M. Clemmons, K. Suggs, C. Miller. 2012. A Function -Based Framework for Stream Assessment and Restoration Projects. US Environmental Protection Agency, Office of Wetlands, Oceans, and Watersheds, Washington, DC EPA 843-K-12-006. Lee Michael T., Peet Robert K., Roberts Steven D., and Wentworth Thomas R., 2008. CVS-EEP Protocol for Recording Vegetation Level. Version 4.2 North Carolina Division of Mitigation Services (NCDMS). "Broad River Basin Restoration Priorities 2009." (September 2014). Peet, R.K., Wentworth, T.S., and White, P.S. (1998), A flexible, multipurpose method for recording vegetation composition and structure. Castanea 63:262-274 Resource Environmental Solutions (2018). Hannah Bridge Stream and Wetland Mitigation Site Final Mitigation Plan. Rosgen, D. (1996), Applied River Morphology, 2nd edition, Wildland Hydrology, Pagosa Springs, CO. Schafale, M.P. 2012. Classification of the Natural Communities of North Carolina, Third Approximation. North Carolina Natural Heritage Program, Division of Parks and Recreation, NCDENR, Raleigh, NC. US Army Corps of Engineers (USACE), 2003. April 2003 NC Stream Mitigation Guidelines. U.S. Army Corps of Engineers (USACE). 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Atlantic and Gulf Coastal Plain Region (Version 2.0), ed. J. S. Wakeley, R. W. Lichvar, and C. V. Noble. ERDC/EL TR-10-20. Vicksburg, MS: U.S. Army Engineer Research and Development Center. US Army Corps of Engineers (USACE), 2016. Wilmington District Stream and Wetland Compensatory Mitigation Update. Hannah Bridge ii Year 5 Monitoring Report Stream and Wetland Mitigation Site October 2023 Appendix A Background Tables Table 1. Hannah Bridge Stream and Wetland Mitigation Site - Mitigation Assets and Components Project Component (reach ID, etc.)' Wetland Position and HydroType2 Existing Footage or Acreage Stationing Mitigation Plan Footage or Acreage Restoration Level Approach Priority Level Mitigation Ratio (X:1) Mitigation Credits As -Built Footage or Acreage Notes/Comments HB1 99 0+15 - 1+31 117 R PI 1 117 1401 Full Channel Restoration, Channel Relocation, Planted Buffer, Exclusion of Livestock, Permanent Conservation Easement HB1 1385 1+63-14+45 1284 R PI 1 1284 Full Channel Restoration, Channel Relocation, Planted Buffer, Exclusion of Livestock, Permanent Conservation Easement HB2 392 14+45 - 18+37 392 Ell 2.5 157 392 Bank Stabilization, Invasive Treatment, Permanent Conservation Easement HB3 1588 18+37 - 36+44 1807 R PI 1 1807 1807 Full Channel Restoration, Channel Relocation, Planted Buffer, Exclusion of Livestock, Permanent Conservation Easement HB4 579 36+84 - 42+63 579 El 1.5 386 579 Structure Installation, Floodplain Benching, Planted Buffer, Permanent Conservation Easement HB4 228 42+63 - 44+91 228 P 10 23 228 Cattle Exclusion, Permanent Conservation Easement HF1 1,386 2+18 - 16+04 1,386 P 10 139 1,386 Permanent Conservation Easement HF2 149 6+40 - 7+89 149 P 10 15 149 Planted Buffer, Permanent Conservation Easement TH3 716 0+63 - 7+79 716 El 1 716 716 Structure Installation, Floodplain Benching, Planted Buffer, Permanent Conservation Easement, 1:1 Credit for Headwater Plantin /Protection W1 RR 5.76 5.76 E (High) 2 2.88 5.76 Wetland Planting, Livestock Exclusion, Floodplain Reonnection, Permanent Conservation Easement W2 RR 0.81 0.81 0.81 Wetland Planting, Permanent Conservation Easement, No Credit W3 RR 4.51 4.51 P 10 0.45 4.51 Permanent Conservation Easement W4 RR 1.67 1.67 E (Low) 3 0.56 1.72 Livestock Exclusion, Wetland Planting, Floodplain Reonnection, Permanent Conservation Easement W5 RR 0.97 0.97 2 0.49 0.97 Plugged Ditch, Wetland Planting, Permanent Conservation Easement W6 VP: 44,856.00 3.78 E (High) 2 1.89 3.78 Plugged Ditch, Wetland Planting, Livestock Exclusion, Floodplain Reonnection, Permanent Conservation Easement W7 RR 0.38 0.38 E (High) 2 0.19 0.38 Wetland Planting, Livestock Exclusion, Floodplain Reonnection, Permanent Conservation Easement W8 RR 0.07 0.07 P 10 0.01 0.07 Permanent Conservation Easement W9 RR 2.08 2.08 P 10 0.21 2.04 Permanent Conservation Easement W10 RR 1.36 1.36 E (High) 2 0.68 1.35 Wetland Planting, Livestock Exclusion, Floodplain Reonnection, Permanent Conservation Easement W11 RR 0.62 0.62 P 10 0.06 0.62 Permanent Conservation Easement W12 RR 0.11 0.11 E (High) 2 0.06 0.11 Wetland Planting, Livestock Exclusion, Floodplain Reonnection, Permanent Conservation Easement W13 RNR 1.74 1.74 1.74 Permanent Conservation Easement, No Credit W14 RR 3.27 3.27 R 1 3.27 3.28 Plugged Ditch, Wetland Planting, Livestock Exclusion, Floodplain Reonnection, Permanent Conservation Easement Project Credits Restoration Level Stream (SMU) Riparian Wetland (WMU) on -riparian Wetland (WMU) Riverine Non-Riverine Restoration 3,924 3.27 Enhancement 6.74 Enhancement 1 386 Enhancement II 157 Enhancement III Creation Preservation 176 0.73 Overall Assets Summary Overall Asset Category Credits Stream 4,16 RP Wetland 10.73 NR Wetland General Note -The above component table is intended to be a close complement to the asset map. Each entry in the above table should have clear distinction and appropriate symbology in the asset map. 1 - Wetland Groups represent pooled wetland polygons in the map with the same wetland type and restoration level. If some ofthe wetland polygons within a group are in meaningfully different landscape positions, soil types or have different community targets (as examples), then further segmentation in the table may be warranted. Wetland features impacted by credit modifiers such as utilities shall be listed as a distinct record with the impacted acreage tallied as discreet records in the table (See Wetland 7 above) 2 - Wetland Position and Hydro Type - Indicates Riparian Riverine, (RR) , riparinan non-riverine (RNR) or Non-Riverine (NR) 3- Buffer Assets - due to the complex nature of buffer and nutrient offset assets they are not included in this example table. Please see the DMS buffer mitigation plan template for the required asset table information. 4 - Adjusted Mitigation Credits are based on the non-standard buffer widths. Table 2. Project Activity and Reporting History Hannah Bridge Stream and Wetland Mitigation Site Elapsed Time Since grading complete: 4 years 6 months Elapsed Time Since planting complete: 4 years 6 months Number of reporting Years : 5 Activity or Deliverable Data Collection Complete Completion or Delivery Mitigation Plan NA Jun-18 Final Design — Construction Plans NA Jul-18 Stream Construction NA Apr-19 Site Planting NA Apr-19 As -built (Year 0 Monitoring — baseline) May-19 May-19 Year 1 Monitoring Nov-19 Dec-19 Supplemental Planting NA Apr-20 Invasive Species Treatment NA May-20 Invasive Species Treatment NA Oct-20 Year 2 Monitoring XS: Jul-20 VP: Sep-20 Sep-20 Supplemental Planting NA Jan-21 Year 3 Monitoring XS: June-21 VP: Sep-21 Sep-21 Year 4 Monitoring XS: NA VP: Sep-22 Oct-22 Channel Repair NA Feb-22 Plugging NA Feb-22 Supplemental Planting NA Feb-22 IDitch nvasive Species Treatment NA Feb-22 Pine and Sweetgum Treatment NA Feb-22 Easement Markers NA Feb-22 Year 5 Monitoring XS: May-23 VP: Sep-23 Oct-23 Year 6 Monitoring Year 7 Monitoring = The number of reports or data points produced excluding the baseline Table 3. Project Contacts Table Hannah Bridge Stream and Wetland Mitigation Site Designer WK Dickson and Co., Inc. / 720 Corporate Center Dr., Raleigh, NC 27607 Primary project design POC Ben Carroll (336) 514-0927 Construction Contractor KBS Earthwork Inc. / 5616 Coble Church Rd., Julian, NC 27283 Construction contractor POC Kory Strader (336) 362-0289 Survey Contractor Matrix East, PLLC / 906 N. Queen St., Suite A, Kinston, NC 28501 Survey contractor POC James Watson, PLS Planting Contractor H&J Forestry Planting contractor POC Matt Hitch Seeding Contractor KBS Earthwork Inc. / 5616 Coble Church Rd., Julian, NC 27283 Contractor point of contact Kory Strader (336) 362-0289 Seed Mix Sources Green Resource (336) 855-6363 Nursery Stock Suppliers Arborgen (845) 851-4129 Monitoring Performers RES / 3600 Glenwood Ave, Suite 100, Raleigh, NC 27612 Stream Monitoring POC Katie Obenauf (336) 705-3041 Vegetation Monitoring POC Katie Obenauf (336) 705-3041 Wetland Monitoring POC Katie Obenauf (336) 705-3041 Table 4. Project Background Information Project Name Hannah Bridge County Johnston Project Area (acres) 46.2 Project Coordinates (latitude and longitude) Latitude: 35.4754 N Longitude:-78.3117 W Planted Acreage (Acres of Woody Stems Planted) 27.53 Project Watershed Summary Information Physiographic Province Coastal Plain River Basin Neuse USGS Hydrologic Unit 8-digit 03020201 USGS Hydrologic Unit 14-digit 3020201150020 DWR Sub -basin 03-04-02 Project Drainage Area (Acres and Square Miles) 894 ac (1.39 sgmi) Project Drainage Area Percentage of Impervious Area <2% CGIA Land Use Classification Agriculture (54%) Forest (39%) Residential (5%) Reach Summary Information Parameters HB1 HB2 HB3 HB4 HF1 HF2 TH3 Length of reach (linear feet) 1400 392 1807 807 1386 149 716 Valley confinement (Confined, moderately confined, unconfined) UC UC MC MC MC UC MC Drainage area (Acres and Square Miles) 667 752 816 894 78 13 24 Perennial, Intermittent, Ephemeral P P P P P I I NCDWR Water Quality Classification N/A N/A N/A N/A N/A N/A N/A Stream Classification (existing) E4/5 E4/5 E5 E5 E5 G6c F5/G5c Stream Classification (proposed) E4/5 N/A E4/5 N/A N/A N/A N/A Evolutionary trend (Simon) N/A N/A N/A N/A N/A N/A N/A FEMA classification N/A N/A N/A N/A N/A N/A N/A Regulatory Considerations Parameters Water of the United States - Section 404 Applicable? Supporting Docs? Water of the United States - Section 401 Yes SAW-2015- 01799 Endangered Species Act Yes DWR # 17- 0537v2 Historic Preservation Act Yes USFWS (Corr. Letter) Coastal Zone Management Act (CZMA or CAMA) Yes SHPO (Corr. Letter) FEMA Floodplain Compliance No N/A Essential Fisheries Habitat Yes N/A No N/A 131ackmon Rd h ro Blackmon 3s, Crossroads Webb Mill Legend bb Conservation Easement CCPV Index Sheet 0 K u Charlie Rd Charlie Rd < a 0 3 0 A o. Stricklantls Crossroads Rd la �D C) C J 0 6 Stricklantls Cros a C O N 9, Drool F eC oof 9�, r Pry I 9 � O' �G Oak Forest Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Oak Fares, Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, R°OpenStreetMap contributors, and thelGIS'User Community N Date: 9/28/2020 Figure 1 - Site Location Map w e Drawn by: RTM res Hannah Bridge Site s Checked by: BPB 0 500 1,000 Johnston County, North Carolina 1 inch =2,000feet Feet Appendix B Visual Assessment Data -01 �� \ � � \�\ � \� w:% � \»\ � . � �\ � � y� � ` � ` � /��. ��: 2 \j �� \\��. 5 � A Hannah Bridge Monitoring Device Photos MY5 Wetland Gauges Groundwater Well 1 (9/14/2023) Groundwater Well 3 (9/13/2023) O tee• 'Ea r �t g} r. s X. fir: '�.w Groundwater Well 2 (9/13/2023) Groundwater Well 4 (9/13/2023) Groundwater Well (9/13/2023) Groundwater Well (9/13/2023) Groundwater Well 7 (9/12/2023) Groundwater Well 8b (9/13/2023) Groundwater Well IOb (9/12/2023) Groundwater Well 8 (9/12/2023) Groundwater Well 9 (9/13/2023) Groundwater Well 11 (9/14/2023) Seam Gauges Stage Recorder 3a193+223 �} � � .:- .. . ., m � .5 . tt�� , Stage Recorder B84(9/12/202 3) Stage Recorder HB3(96222) Flow Gauge TSd 9/2703 Appendix C Vegetation Plot Data Appendix C. Vegetation Assessment Data Table 5. Planted Species Summary Common Name Scientific Name Total Stems Planted Water Oak Quercus nigra 5,500 Overcup Oak Quercus lyrata 4,000 Bald Cypress Taxodium distichum 3,500 Sycamore Platanus occidentalis 3,500 Willow Oak Quercus phellos 3,000 Swamp Chestnut Oak Quercus michauxii 2,400 Green Ash Fraxinus pennsylvanica 2,200 Tuhptree Liriodendron tulipifera 2,000 River Birch Betula nigra 1,600 Buttonbush Cephalanthus occidentalis 1,500 Cherrybark Oak Quercus pagoda 1,100 Blackgum Nyssa sylvatica 600 Silky Dogwood Cornus amomum 500 Total 31,400 Appendix C. Vegetation Assessment Data Table 6. Vegetation Plot Mitigation Success Summary Wetland/Stream Vegetation Totals (per acre) Plot # Planted Stems/Acre Volunteers Stems/Acre Total Stems/Acres Success Criteria Met? Average Stem Height 1 890 243 1133 Yes 12.0 2 769 243 1012 Yes 15.4 3 567 324 890 Yes 8.3 4 1093 0 1093 Yes 14.4 5 1012 1133 2145 Yes 6.3 6 688 0 688 Yes 19.0 7 647 243 890 Yes 17.0 8 486 40 526 Yes 14.4 9 769 0 769 Yes 19.6 10 526 445 971 Yes 15.1 11 445 0 445 Yes 10.2 12 647 364 1012 Yes 17.0 13 931 0 931 Yes 15.3 14 567 0 567 Yes 11.1 15 567 283 850 Yes 9.6 16 364 243 607 Yes 9.2 17 567 0 567 Yes 16.4 R1 567 0 567 Yes 5.7 R2 486 0 486 Yes 6.6 R3 486 0 486 Yes 5.9 Project Avg 652 178 830 Yes 12.6 Appendix C. Vegetation Assessment Data Table 7. Stem Count Total and Planted by Plot Species Hannah Bridge Current Plot Data (MY5 2023) Scientific Name Common Name Species Type 05082019-01-0001 05082019-01-0002 05082019-01-0003 05082019-01-0004 05082019-01-0005 05082019-01-0006 05082019-01-0007 05082019-01-0008 05082019-01-0009 Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T PnoLS P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T Acer rubrum red maple Tree 3 1 Baccharis halimifolia eastern baccharis Shrub Betula nigra river birch Tree 2 2 2 4 4 4 7 7 7 2 2 7 3 3 3 1 5 5 5 Celtis occidentalis common hackberry Tree Cephalanthus occidentali common buttonbush Shrub 3 3 3 2 2 2 2 2 2 Cornus amomum silky dogwood Shrub Fraxinus pennsylvanica green ash Tree 2 2 2 2 2 2 3 3 3 1 1 1 Liquidambarstyraciflua sweetgum Tree 3 6 8 4 Liriodendron tulipifera tuliptree Tree 31 1 Nyssa sylvatica blackgum Tree Pinus taeda loblolly pine Tree Platanus occidentalis American sycamore Tree 1 1 1 3 3 3 5 5 5 2 2 2 6 6 6 2 2 2 4 4 4 Quercus oak Tree Quercus alba white oak Tree Quercus lyrata overcup oak Tree 6 6 6 3 3 3 4 4 4 6 6 6 8 8 8 5 5 5 6 6 6 Quercus michauxii swamp chestnut oak Tree 3 3 3 1 1 1 2 2 2 1 1 1 3 3 3 Quercus nigra water oak Tree 3 3 3 1 1 1 2 2 2 1 1 1 Quercus pagoda cherrybark oak Tree 1 1 1 3 3 3 1 1 1 3 3 3 2 2 2 Quercus phellos willow oak Tree 5 5 5 5 5 5 2 2 21 1 1 1 1 1 11 2 2 2 11 1 1 Quercus rubra northern red oak Tree 1 1 1 Rhus glabra smooth sumac shrub Salix nigra black willow Tree 20 Taxodium distichum bald cypress Tree 1 1 1 1 1 11 3 3 3 4 4 41 16 16 16 1 1 11 1 1 1 Ulmus alata winged elm Tree Ulmus americana lAmerican elm ITree Stem count size (ares) size (ACRES) Species count Stems per ACRE 221 221 28 197 19 25 141 141 22 277 27 27 25 251 53 171 171 17 161 12 12 13 19 19 19 1 1 1 1 1 1 1 1 1 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 7 7 9 8 8 9 6 6 7 6 6 6Fol'2 P101265 8 5 5 5aA 9 5 7 7 7 890 890 1133 769 769 1012 567 567 890 1093 1093 1093 688 688 688 890 486EaA 769 769 769 Appendix C. Vegetation Assessment Data Table 7. Stem Count Total and Planted by Plot Species (continued) Hannah Bridge Current Plot Data (MY5 2023) Scientific Name Common Name Species Type 05082019-01-0010 05082019-01-0011 05082019-01-0012 05082019-01-0013 05082019-01-0014 05082019-01-0015 05082019-01-0016 05082019-01-0017 Pnol-S 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 Pnol-S P-all T Acer rubrum red maple Tree 4 Baccharis halimifolia eastern baccharis Shrub 2 Betula nigra river birch Tree 2 2 2 2 2 2 1 1 1 Celtis occidentalis common hackberry Tree Cephalanthus occidentali common buttonbush Shrub 5 5 5 1 1 1 Cornus amomum silky dogwood Shrub Fraxinus pennsylvanica green ash Tree 4 4 4 3 3 3 1 1 1 1 1 1 Liquidambarstyraciflua sweetgum Tree 6 7 3 Liriodendron tulipifera tuliptree Tree 3 3 3 1 1 1 3 3 Nyssa sylvatica blackgum Tree Pinus taeda loblolly pine Tree Platanus occidentalis American sycamore Tree 1 1 1 1 1 1 4 4 4 8 8 8 4 4 4 3 3 3 2 2 2 9 9 9 Quercus oak Tree Quercus alba white oak Tree 1 1 1 1 1 1 Quercus lyrata overcup oak Tree 1 1 1 3 3 3 1 1 1 1 1 1 Quercus michauxii swamp chestnut oak Tree 2 2 2 1 1 1 7 7 7 3 3 3 3 3 3 3 3 3 Quercus nigra water oak Tree 2 2 2 1 1 1 Quercus pagoda cherrybark oak Tree Quercus phellos willow oak Tree 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 3 3 3 Quercus rubra northern red oak Tree Rhus glabra smooth sumac shrub Salix nigra black willow Tree Taxodium distichum bald cypress Tree 3 3 3 3 3 3 3 3 3 Ulmus alata winged elm Tree 5 Ulmus americana jAmerican elm ITree Stem count size (ares) size (ACRES) Species count Stems per ACRE 13 131 24 11 11 11 16 161 25 23 231 23 14 141 14 14 141 21 9 9 15 14 141 14 1 1 1 1 1 1 1 1 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 5 5 7 7 7 7 6 6 9 6 6 6 4 4 4 4 4 5 6 6 8 4 4 4 526 526 971 445 445 445 647 647 1012 9311 9311 931 567 567 567 5671 5671 850 3641 364 607 S671 5671 567 Appendix C. Vegetation Assessment Data Table 7. Stem Count Total and Planted by Plot Species (continued) Hannah Bridge Current Plot Data (MY5 2023) Annual Means Scientific Name Common Name Species Type RVP-1 RVP-2 RVP-3 MY5 (2023) MY4 (20 2) MY3 (2021) MY2 (2020) MY1(2019) MYO (2019) PnoLS P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T PnoLS P-all T Pnol-S P-all T Acer rubrum red maple Tree 8 2 Baccharis halimifolia eastern baccharis Shrub 2 Betula nigra river birch Tree 1 1 1 29 29 35 28 28 28 24 24 24 24 24 24 24 24 24 30 30 30 Celtis occidentalis common hackberry Tree 2 2 2 Cephalanthus occidentali common buttonbush Shrub 5 5 5 4 4 4 4 4 4 26 26 26 14 14 14 13 13 13 11 11 11 5 5 5 5 5 5 Cornus amomum silky dogwood Shrub 1 1 1 Fraxinus pennsylvanica green ash Tree 17 17 17 22 22 22 21 21 23 20 20 20 22 22 22 33 33 33 Liquidambarsty racifIua sweetgum Tree 37 641 18 151 18 Liriodendron tulipifera tuliptree Tree 1 1 1 5 5 15 6 6 16 12 12 23 7 7 9 8 8 8 27 27 27 Nyssa sylvatica blackgum Tree 1 1 1 Pinustaeda loblolly pine Tree 8 3 Platanus occidentalis American sycamore Tree 1 1 1 2 2 2 2 2 2 60 60 601 62 62 62 52 52 52 52 52 52 44 44 44 65 65 65 Quercus oak Tree 2 2 2 3 3 31 13 13 13 122 122 122 Quercus alba white oak Tre 1 21 2 2 3 31 31 2 21 4 21 2 2 Quercus lyrata overcup oak Tree 1 1 1 1 1 1 46 46 46 47 47 47 48 48 48 49 49 49 45 45 45 11 11 11 Quercus michauxii swamp chestnut oak Tree 3 3 3 32 32 32 42 42 46 38 38 38 32 32 32 29 29 291 71 7 7 Quercus nigra water oak Tree 10 10 101 9 9 9 8 8 8 8 8 8 6 6 6 5 5 5 Quercus pagoda cherrybark oak Tree 4 4 4 2 2 2 16 16 16 9 9 9 12 12 121 13 13 13 13 13 13 9 9 9 Quercus phellos willow oak Tree 1 1 1 3 3 31 2 2 2 42 42 42 33 33 341 34 34 36 33 33 35 31 31 31 24 24 24 Quercus rubra northern red oak Tree 1 1 1 1 1 1 Rhus glabra smooth sumac shrub 4 Salix nigra blackwillow Tree 201 110 3 891 89 Taxodium distichum bald cypress Tree 36 36 36 36 36 38 34 341 34 32 32 32 21 21 21 281 28 28 Ulmus alata winged elm Tree 5 20 31 Ulmus americana jAmerican elm ITree I 1 2 Stem count size (ares) size (ACRES) Species count Stems per ACRE 13 13 131. 12 12 12 12 12 12 322 322 410 312 312 534 300 300 340 288 288 434 2621 2621 369 367 367 367 1 1 1 20 20 18 18 18 18 0.02 0.02 0.02 0.49 0.49 0.44 0.44 0.44 0.44 6 6 6 5 5 5 5 5 5 13 13 18 13 13 19 13 13 16 14 14 19 13 13 15 13 13 13 526 526 526 486 486 486 486 486 486 652 652 830 631 631 1081 674 674 764 647 647 976 589 589 830 825 825 825 Appendix D Stream Measurement and Geomorphology Data Upstream Downstream Hannah Bridge - Reach HB1 - Cross Section 1 - Pool 128 127 126 c 125 w 124 123 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 MY3-2021 MY5-2023 - - - Approx. Bankfull Cross Section 1 Pool Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA 1 125.87 125.7 125.8 125.6 125.6 Bankfull Width 1 9.3 9.4 9.6 8.1 7.5 Floodnrone Width 1 >50.7 >49.9 >50 >49.9 >49.9 Bankfull Mean Depth (ft) 1.1 1.1 - - - BankfullMaxDe th (ft)2 1.8 2.0 2.7 2.5 Low Bank Elevation ft) - - .9 126.0 125.9 Bankfull Cross Sectional Area (ft2)210.0 10.03 E2.2 13.6 12.7 Bankfull Width/De th Ratio 8.7 8.7 - - Bankfull Entrenchment Ratio' - - - - Bankfull Bank Height Ratio' - - - - Upstream Downstream Hannah Bridge - Reach HB1 - Cross Section 2 - Shallow 129 128 127 c 0 m 126 w 125 124 1 i i i i i i i -1 i i 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 n stnnra lftl MYO-2019 MY1-2019 MY2-2020 MY3-2021 MY5-2023 - - - Approx. Bankfull Floodprone Area • • • • Low Bank Cross Section 2 Shallow Base MYl MY2 MY3 MY5 MY7 M Y i Bankfull Elevation (ft) - Based on AB-XSA' 125.82 125.9 126.0 126.0 126.1 Bankfull Width ft 1 10.4 12.1 12.7 13.9 13.4 Floodprone Width ft 1 >50.1 >50.2 >50.2 >50.1 >50 Bankfull Mean Depth ft 1.1 12.1 - - - BanMI] Max De th ft 2 1.7 1.7 1.7 1.5 1.8 Low Bank Elevation ft 1.7 1.7 126.0 126.0 126.0 Bankfull Cross Sectional Area (ft2)2 11.8 11.8 11.4 11.1 11.3 Bankfull Width/Depth Ratio 9.2 12.4 - - - Bankfull Entrenchment Ratio 1 >4.8 >4.2 >3.9 >4.1 >3.7 Bankfull Bank Height Ratio' 1.0 1.0 1.0 1.0 1.0 Upstream Downstream 127 Hannah Bridge - Reach HB1 - Cross Section 3 - Shallow 126 125 c 0 124 w 123 122 0 3 6 9 12 15 18 21 24 27 30 33 Distance ft 36 39 42 45 48 MYO-2019 MY1-2019 MY5-2023 - - -Approx. Bankfull MY2-2020 Floodprone Area .... MY3-2021 Low Bank Cross Section 3 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 124.23 124.2 124.3 124.3 124.3 Bankfull Width ft 1 10.9 12.3 12.7 13.1 12.0 Floodprone Width ft 1 >50 >50 >50.1 >50.1 >50 Bankfull Mean Depth ft 1.3 1.1 - - - BankfuUMaxDe th ft z 2.0 1.9 2.0 2.0 2.0 Low Bank Elevation ft 2.0 1.8 124.2 124.3 124.3 Bankfull Cross Sectional Area ftZ Z 13.9 13.9 13.8 14.0 13.8 Bankfull Width/Depth Ratio 8.6 10.9 - - - Bankfull Entrenchment Ratio' >4.6 >4.1 >4.0 >3.9 >4.2 Bankfull Bank Height Ratio 1 1.0 0.9 1.0 1.0 1.0 Upstream Downstream Hannah Bridge - Reach HB1 - Cross Section 4 - Pool 126 125 124 1 0 M 0 123 - - - - - - - - - - - - - - - w 122 121 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 MY3-2021 MY5-2023 - - - Approx. Bankfull Cross Section 4 Pool Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 124.02 123.9 124.0 124.0 123.9 Bankfull Width (ft)' 11.1 13.6 11.6 16.1 14.8 Floodprone Width ft' >50 >50 >50 >50 >50 Bankfull Mean Depth ft 1.3 1.1 - - - Bankfull Max Depth (ft)2 2.5 2.5 2.5 2.5 2.5 Low Bank Elevation (ft) - - 124.0 124.0 123.8 Bankfull Cross Sectional Area ftZ 2 14.8 14.8 15.3 14.3 13.6 Bankfull Width/Depth Ratio 8.3 12.6 - - - Bankfull Entrenchment Ratio' - - - - - Bankfull Bank Height Ratio' - - - - - Upstream M 2� k_iM Dyke f ?r r � 4 V Downstream Hannah Bridge - Reach HB1 - Cross Section 5 - Pool 124 123 Z122 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - c 0 121 w 120 119 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 MY3-2021 MY5-2023 - - - Approx. Bankfull Cross Section 5 Pool Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 122.11 122.0 122.1 122.1 121.9 Bankfull Width ft i 11.3 12.1 15.1 11.4 11.1 Floodrone Width ft 1 >50 >50 >50 >50 >50 Bankfull Mean Depth (ft) 1.0 0.9 - - - Bankfull Max Depth ft Z 2.1 2.2 2.2 2.2 2.2 Low Bank Elevation ft - - 122.1 122.0 121.7 Bankfull Cross Sectional Area (ft2)2 11.4 11.4 10.8 10.7 9.7 Bankfull Width/Depth Ratio 11.3 12.8 - - - Bankfull Entrenchment Ratio' - - - - - Bankfull Bank Height Ratio' 1 - - - - - Upstream Downstream Hannah Bridge - Reach HB1 - Cross Section 6 - Shallow 124 123 122 _ 0 121 w 120 119 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 MYO-2019 MY1-2019 MY2-2020 MY3-2021 MY5-2023 - - - Approx. Bankfull Floodprone Area • • • • Low Bank Cross Section 6 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 121.72 121.8 121.8 121.8 121.7 Bankfull Width ft ' 12.4 15.2 14.1 13.7 12.5 Floodprone Width ft' >50 >50 >50.1 >49.9 >50 Bankfull Mean Depth ft) 1.1 0.9 - - - Bankfull Max Depth ft 2 1.7 1.7 1.8 1.9 1.9 Low Bank Elevation ft 1.7 1.4 121.7 121.8 121.7 Bankfull Cross Sectional Area (ft2)2 13.0 13.0 12.3 12.4 13.0 Bankfull Width/Depth Ratio 11.8 17.9 - - - Bankfull Entrenchment Ratio' >4 >3.3 >3.5 14.0 >4.0 Bankfull Bank Height Ratio' 1.0 0.8 1.0 1.0 1.0 Upstream Downstream Hannah Bridge - Reach HB3 - Cross Section 7 - Pool 121 120 119 Now"- CA own MR= r 118 0 aT w 116 115 114 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 MY3-2021 MY5-2023 - - - Approx. Bankfull Cross Section 7 Pool Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 118.31 117.9 117.8 117.6 117.3 Bankfull Width (ft)' 11.2 10.1 10.0 9.4 9.5 Floodprone Width (ft)1 >50 >50 >50 >50 - Bankfull Mean Depth ft 1.7 1.9 - - - BankfullMax Depth (ft)2 2.4 2.7 3.4 3.4 3.5 Low Bank Elevation (ft) - - 118.3 118.5 118.4 Bankfull Cross Sectional Area (ft2)2 18.9 18.9 24.7 28.1 30.8 Bankfull Width/Depth Ratio 6.6 5.4 - - - Bankfull Entrenchment Ratio' - - - - - Bankfull Bank Height Ratio' - 1 - - - - Upstream Downstream 121 Hannah Bridge - Reach HB3 - Cross Section 8- Shallow 120 119 c 0 CO N W 118 117 . n V r. .-. r . r . � r . n �. r. T 116 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 MYO-2019 MY1-2019 MY5-2023 - - - Approx. Bankfull MY2-2020 Floodprone Area MY3-2021 • • • • Low Bank Cross Section 8 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA 118.04 118.1 118.2 118.2 118.1 Bankfull Width ft)l 11.6 12.6 21.2 12.3 11.8 Floodprone Width ft 1 >49.8 >50 >49.9 >49.8 >49.9 Bankfull Mean Depth ft 1.4 1.2 - - - Bankfull Max Depth (ft)2 1.8 1.8 1.9 2.1 2.0 Low Bank Elevation ft 1.8 1.8 118.2 118.2 118.1 Bankfull Cross Sectional Area (ft2)2 15.7 15.7 15.8 15.4 15.3 Bankfull Width/Depth Ratio 8.5 10.1 - - - Bankfull Entrenchment Ratio' >4.3 >4.0 >2.4 >4.1 >4.2 Bankfull Bank Heigh Ratioll 1.0 1 1.0 1 1.0 1 1.0 1 1.0 Upstream Downstream Hannah Bridge - Reach HB3 - Cross Section 9 - Shallow 118 117 116 - - - - 0 m 115 w 114 113 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 MYO-2019 MY1-2019 MY2-2020 MY3-2021 MY5-2023 - - - Approx. Bankfull Floodprone Area • • • • Low Bank Cross Section 9 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ BankfuH Elevation (ft) - Based on AB-XSA1 115.93 116.0 116.1 116.0 116.0 Bankfull Width ft i 12.1 13.4 14.5 13.5 13.7 Floodprone Width ft 1 >49.9 >50 >49.9 >50.0 >49.9 Bankfull Mean Depth ft 1.3 1.2 - - - Bankfull MaxDe th (ft)2 1.8 1.9 1.9 2.2 1.8 L.ow Bank Elevation ft 1.8 1.9 116.0 116.0 116.0 Bankfull Cross Sectional Area (ftZ)2 15.5 15.5 14.6 16.0 14.6 Bankfull Width/Depth Ratio 9.4 11.6 - - - Bankfull Entrenchment Ratio' >4.1 >3.7 >3.4 >3.6 >3.6 Bankfull Bank Height Ratio' 1.0 1.0 1.0 1.0 1.0 Upstream Downstream Hannah Bridge - Reach HB3 - Cross Section 10 - Pool 117 116 115 - - - - _ - - - - - - - - - - - - - - - - - - - - - - - - - - - - _ C O a') 114 w 113 112 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 —MY3-2021 MY5-2023 - - - Approx. Banm:11 Cross Section 10 Pool Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 115.82 115.6 115.6 115.6 115.5 Bankfull Width (ft)1 12.0 10.9 10.4 11.4 10.4 Floodprone Width ft ' >50 >50 >50 >50 >50 Bankfull Mean Depth ft 1.6 1.7 - - - BankfullMax Depth (ft)2 3.3 3.5 3.3 3.1 3.4 Low Bank Elevation (ft) - - 115.7 115.6 115.7 Bankfull Cross Sectional Area (ft2)2 19.1 19.1 20.0 19.6 21.4 Bankfull Width/Depth Ratio 7.5 6.2 - - - Bankfull Entrenchment Ratio' - - - - - Bankfull Bank Height Ratio' - - - - - Upstream Downstream Hannah Bridge - Reach HB3 - Cross Section 11 - Pool 117 116 115 -- c _ 0 m 114 w 113 112 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 MY3-2021 MY5-2023 - - - Approx. Bankfull Cross Section 11 Pool Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 114.52 114.5 114.6 114.5 114.5 Bankfiill Width 1 12.0 12.7 19.3 18.2 12.8 Floodnrone Width 1 >50 >50 >50 >50 >50 Bankfull Mean Depth ft 1.1 1.0 - - - BankfullMax Depth (ft)2 1.8 1.9 1.7 1.9 1.7 Low Bank Elevation (ft) - - 114.4 114.4 114.2 Bankfull Cross Sectional Area (fe)2 13.0 13.0 9.8 12.2 10.6 Bankfull Width/Depth Ratio 11.1 12.3 - - - Bankfull Entrenchment Ratio' - - - - - Bankfull Bank Height Ratio' - - - - Upstream Downstream Hannah Bridge - Reach HB3 - Cross Section 12 - Shallow 117 116 115 114 •J L J t� • •J L• L� 1 L • L�J w 113 112 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance ft MYO-2019 MY1-2019 MY2-2020 MY3-2021 MY5-2023 - - - Approx. Bankfull Floodprone Area • • • • Low Bank Cross Section 12 1 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 114.24 114.2 114.5 114.5 114.6 Bankfull Width (ft)' 11.8 11.8 14.1 17.4 12.9 Floodprone Width ft 1 >50.7 >50.7 >50.6 >50.8 >50.7 Bankfull Mean Depth ft 1.1 1.1 - - - Bankfull Max Depth ft 2 1.5 1.5 1.6 1.7 1.7 Low Bank Elevation ft 1.5 1.6 114.4 114.5 114.6 Bankfull Cross Sectional Area (ft2)2 13.3 13.3 12.2 13.4 13.7 Bankfull Width/Depth Ratio 10.5 10.5 - - - Bankfull Entrenchment Ratio 1 >4.3 >4.3 >3.6 >3.9 >3.9 Bankfull Bank Height Ratio' 1.0 1.0 1.0 1.0 1.0 Upstream Downstream Hannah Bridge - Reach HB3 - Cross Section 13 - Shallow 116 115 114 _ C O 113 i i •• "7` i i i• i i i - w 112 111 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance ft MYO-2019 MY1-2019 MY2-2020 MY3-2021 MY5-2023 - - - Approx. Bankfull Floodprone Area • • • • Low Bank Cross Section 13 1 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 113.48 113.5 113.7 113.7 113.8 Bankfull Width ft)' 12.5 22.9 18.0 27.0 31.3 Floodprone Width (ft)1 >52.3 >52.6 >52.5 >52.7 >52.5 Bankfull Mean Depth (ft) 1.0 0.5 - - - BankfullMaxDe th (ft)2 1.4 1.5 1.5 1.1 1.6 Low Bank Elevation ft 1.4 1.4 113.5 113.6 113.7 Bankfull Cross Sectional Area (ft2)2 12.0 12.0 10.4 10.0 9.7 Bankfull Width/Depth Ratio 13.0 43.6 - - - Bankf ill Entrenchment Ratio' >4.2 >2.3 >2.9 >4.1 >1.4 Bankfull Bank Height Ratio 1 1.0 1.0 0.9 1.0 0.9 Upstream Downstream Hannah Bridge - Reach HB3 - Cross Section 14 - Pool 116 115 114 2 16 113 - - - - - - - - - - - - - - - - - - - - w 112 111 0 3 6 9 12 15 MYO-2019 MY1-2019 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MY2-2020 MY3-2021 My5-2023 - - - Approx. Bankfull Cross Section 14 Pool Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 113.41 113.4 113.4 113.8 113.8 Bankfull Width ft� 11.1 11.8 13.2 14.1 22.0 Floodprone Width (ft)1 >50 >50 >50 >50 >50 Bankfull Mean Depth ft 1.3 1.2 - - - Bankfull Max Depth (ft)2 2.2 2.1 2.3 1.9 2.0 Low Bank Elevation ft - - 113.5 113.6 113.6 Bankfull Cross Sectional Area (ft2)2 14.0 14.0 15.3 12.1 12.2 Bankfull Width/Depth Ratio 8.7 9.9 - - - Bankfull Entrenchment Ratio' - - - - - Bankf ill Bank Height Ratio' - - - - - Upstream Downstream 114 Hannah Bridge - Reach HB4 - Cross Section 15 - Shallow - Enhancement 1 $ 113 112 c.. 0 m 111 . . .. . .. .. .. .. .. .. .. .. .. .. . .. . ... ... . .. . w 110 109 VA 0 3 6 9 12 15 18 21 24 27 30 33 Distance ft 36 39 42 45 48 MYO-2019 MY1-2019 MY5-2023 - - - Approx. Bankfull MY2-2020 Floodprone Area MY3-2021 • • • • Low Bank Cross Section 15 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 111.72 111.7 111.6 111.4 111.4 Bankfull Width ft 1 15.4 15.3 15.4 14.0 14.3 Floodprone Width (ft)' >49.9 >49.9 >49.8 >49.7 >49.6 Bankfull Mean Depth ft 0.7 0.7 - - - Bankfull MaxDe th ft 2 1.4 1.4 1.4 1.9 1.9 Low Bank Elevation ft 1.4 1.4 111.7 111.6 111.7 Bankfull Cross Sectional Area (ft2)2 11.4 11.4 12.1 14.2 15.7 Bankfull Width/Depth Ratio 20.8 20.7 - - - Bankfull Entrenchment Ratio' >3.2 >3.2 >3.2 >3.4 >3.5 Bankfull Bank Height Ratio' 1.0 1.0 1.0 1.1 1.2 Upstream Downstream 114 Hannah Bridge - Reach HB4 - Cross Section 16 - Shallow - Enhancement 1 $ 113 112 c 0 0 111 .. .. .. .. .. .. .. .. .. ... ... .. .. .. w- 110 - - - - - - - - - - 109 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 MYO-2019 - MY1-2019 MY5-2023 - - - Approx. Bankfull MY2-2020 Floodprone Area MY3-2021 • • • • Low Bank Cross Section 16 Shallow Base MYl MY2 MY3 MY5 MY7 MY[ Bankfull Elevation (ft) - Based on AB-XSA' 111.30 111.3 111.2 111.1 110.8 Bankfull Width ft)' 18.8 19.3 19.0 16.8 16.3 Floodprone Width (ft)' >37 >37 >50.4 >34.9 >41.2 Bankfull Mean Depth ft 0.6 0.5 - - - Bankfull Max Depth ft 2 0.9 0.8 0.8 1.0 1.3 Low Bank Elevation ft 0.9 0.8 111.1 111.2 111.3 Bankfull Cross Sectional Area (ft2)2 10.6 10.6 8.1 12.5 19.4 Bankf ill Width/Depth Ratio 33.3 35.4 - - - Bankfufl Entrenchment Ratio 1 >2 >1.9 >2.7 >2.4 >2.5 Bankfull Bank Height Ratio' 1.0 1.0 0.8 1.6 1.6 Upstream Downstream 126 Hannah Bridge - Reach HF1 - Cross Section 17 - Shallow 125 124 t c 0 - 123 w 122 121 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 MYO-2019 - MY1-2019 M5-2023 - - - Approx. Bankfull MY2-2020 Floodprone Area MY3-2021 • • • • Low Bank Cross Section 17 1 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ Bankfu11 Elevation (ft) - Based on AB-XSA 123.08 123.1 123.1 123.2 123.0 Bankfull Width ft 1 5.6 5.7 7.9 7.7 5.8 Floodprone Width (ft)1 >50.2 >50.1 >50.1 >50.1 >50.0 Bankfull Mean Depth ft 0.5 5.0 - - - Bankfull Max Depth (ft)2 0.9 0.9 0.7 1.0 1.0 Low Bank Elevation ft 0.9 0.7 122.9 123.2 123.0 Bankfull Cross Sectional Area ftZ z 2.9 2.9 2.1 3.2 2.9 Bankfull Width/Depth Ratio 10.6 11.5 - - - BankfullEntrenchment Ratio' >9 >8.7 >6.3 >8.8 >8.6 Bankfull Bank Height Ratio 1 1.0 0.8 0.8 1.0 1.0 Upstream Downstream Hannah Bridge - Reach HF1 - Cross Section 18 - Pool F 126 125 124 c 0 123 w- 122 121 - - - - - - - - - - - - - - - - - - - - - - - - - 0 3 6 9 12 15 18 21 24 27 30 33 36 39 Distance (ft) 42 45 48 MYO-2019 MY1-2019 MY2-2020 — MY3-2021 My5-2023 - - - Approx. Bankfull Cross Section 18 Pool Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 123.05 123.1 123.1 123.2 122.9 Bankfull Width ft l 5.8 5.9 9.6 5.3 5.6 Floodprone Width (ft)l >50 >50 >50 >50 >50 Bankfull Mean Depth (ft) 0.6 0.5 - - - Bankfull Max Depth (ft)2 1.1 1.2 1.1 1.4 1.3 Low Bank Elevation (ft) - - 123.0 123.3 123.0 Bankfull Cross Sectional Area ft2 2 3.3 3.3 3.1 4.1 3.6 Bankfull Width/Depth Ratio 10.2 10.9 - - - Bankfull Entrenchment Ratio - - - - - Bankfull Bank Height Ratio' I - - - - - Upstream Downstream Hannah Bridge - Reach TH3 - Cross Section 19 - Shallow 122 121 120 c CO 0 119 FU 118 •i i•i••a•- i •2 i•U. i i• !.•i •it i•- •J!.•J 2.1 U. i••!. 117 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 MYO-2019 - MY1-2019 MY2-2020 MY3-2021 My5-2023 - - - Approx. Bankfull Floodprone Area • • • • Low Bank Cross Section 19 1 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 118.89 118.9 118.9 118.9 118.9 Bankfull Width ft 1 7.0 7.3 7.9 7.1 6.9 Floodprone Width ft 1 >42.2 >41.8 >50.1 >39.8 >40.9 Bankfull Mean Depth ft 0.6 1 0.6 - - - Bankfull Max Depth ft 2 0.9 0.9 1.0 1.0 1.0 Low Bank Elevation ft 0.9 1.0 119.0 118.9 118.9 Bankfull Cross Sectional Area (ftZ)2 4.3 4.3 6.0 4.8 4.8 Bankfull Width/Depth Ratio 11.3 12.5 - - - Bankfull Entrenchment Ratio' >6 >5.7 >6.4 >4.9 >6.0 Bankfull Bank Height Ratio' 1.0 1.1 1.2 1.1 1.1 Upstream Downstream Hannah Bridge - Reach TH3 - Cross Section 20 - Shallow 118 117 116 c 0 115 ? w 14 S� 1 114 A0000 - -7 113 1 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 MYO-2019 - MY1-2019 MY2-2020 MY3-2021 MY5-2023 - - - Approx. Bankfull Floodprone Area • • • • Low Bank Cross Section 20 (Shallow) Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 115.43 115.3 115.4 115.4 115.3 Bankfull Width (ft)' 12.7 12.1 12.3 10.9 11.8 Floodprone Width (ft)' >49.4 >49.8 >49.6 >49.5 >49.4 Bankfull Mean Depth ft 0.9 1 0.9 - - - Bankfull Max Depth (ft)2 1.6 1.6 1.8 1.6 1.9 Low Bank Elevation ft 1.6 1.7 115.5 115.2 115.3 Bankfull Cross Sectional Area (ft2)2 10.9 10.9 13.3 8.9 40.5 Bankfull Width/Depth Ratio 14.9 13.4 - - - Bankfull Entrenchment Ratio'1 >3.9 >4.1 >4.0 >4.6 >4.2 Bankf ill Bank Height Ratio'l 1.0 1 1.1 1 1.1 1 0.9 1 1.0 Table 8. Baseline Stream Data Summary Hannah Bridge Mitigation Site - Reach HB1 Parameter Gauge' Regional Curve Pre -Existing Condition* Reference Reach(es) Data Design Monitoring Baseline Dimension and Substrate - Shallow Only LL UL Eq. Min Mean Med Max SD n Min Mean Med Max SD n Min Med Max Min Mean Med Max SD n Bankfull Width (ft) --- --- --- --- --- 12.1 --- --- --- 10.8 11.5 11.5 12.2 --- 2.0 --- 12.2 --- 10.4 11.2 10.9 12.4 1.0 3 Floodprone Width (ft) --- --- >50 --- --- --- >50 --- --- >40 --- 2.0 --- >50 --- >50 >50 >50 >50.1 0.1 3 Bankfull Mean Depth (ft) --- --- -- --- 1.0 --- --- 1.3 1.4 1.4 1.4 --- 2.0 --- 1.3 --- 1.1 1.2 1.1 1.3 0.1 3 'Bankfull Max Depth ft --- 2.3 --- --- --- 1.8 1.9 1.9 2.0 --- 2.0 --- 1.6 --- 1.7 1.8 1.7 2.0 0.2 3 Bankfull Cross Sectional Area ft' -- --- -- -- -- 12.2 1 --- I --- I --- 14.7 1 15.3 1 15.3 1 15.8 1 --- 1 2.0 --- 1 15.4 1 --- 11.8 12.9 1 13.0 13.9 1.1 3 Width/Depth Ratio --- --- 12.1 --- --- --- 7.9 8.7 8.7 9.4 --- 2.0 --- 9.7 --- 8.6 9.9 9.2 11.8 1.7 3 Ratio EntrenHHh --- --- >2.2 --- --- --- >2.2 --- --- >2.2 --- 2.0 --- >2.2 >4 >4.5 >4.6 >4.8 0.4 3 'Bank Rati --- --- 1.0 1.0 1.1 1.1 1.1 2.0 1.0 1.0 1.0 1.0 1.0 0.0 3 Profile Shallow Length (ft) 2 --- --- 22 --- --- 5 --- --- 23 --- --- 10 --- 34M 16.0 15.2 32.2 8.2 20 Shallow Slope (ft/ft) --- --- --- --- --- --- 0.006 --- --- 0.03 --- --- 0.006 --- 0.03 0.005 0.0027 0.0205 0.006 20 Pool Length (ft) 3 --- --- 9.7 --- --- 11.6 --- --- 45.6 --- --- 13 --- 2925.1 27.7 35.7 8.0 22 Pool Max depth (ft) --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- Pool Spacing (ft) 5.2 --- --- 46.8 --- --- 37.2 --- --- 55.7 --- --- 39 --- 8562.2 56.5 132.8 25.6 22 Pattern Channel Beltwidth (ft) 19 --- 45 --- --- 19 --- --- 57 --- --- 34 --- 70 34 --- --- 70 --- --- Radius of Curvature (ft) 9 --- --- 22 --- --- 10 --- --- 28 --- --- 23 --- 42 23 --- --- 42 --- --- Rc:Bankfull width (ft/ft) --- --- --- --- --- --- --- --- --- --- --- Meander Wavelength (ft) 5 --- -- 147 --- --- 49 --- --- 170 --- --- 90 --- 151 90 --- --- 151 --- --- Meander Width Ratio 1.6 --- --- 3.7 --- --- 1.6 --- --- 5.3 --- --- 2.8 --- 5.7 2.8 --- --- 5.7 --- --- Transport parameters Reach Shear Stress (competency) Ib/f' --- --- Max part size (mm) mobilized at bankfull -- Stream Power (transport capacity) W/m' Additional Reach Parameters Rosgen Classification E4/5 E4/5 E4/5 E4/5 Bankfull Velocity (fps) --- Bankfull Discharge (cfs) --- --- --- Valley length (ft) 901 842 --- --- Channel Thalweg length (ft) 1074 995 --- --- Sinuosity (ft) 1.19 1.18 1.2 1.2 Water Surface Slope (Channel) (ft/ft) 0.008 0.29 --- --- Channel slope (ft/ft) 0.008 0.003 0.003 --- 3 Bankfull Flood lain Area acres --- --- --- --- 4% of Reach with Eroding Bank --- --- Channel Stability or Habitat Metric - Biological or Other - - Shaded cells indicate that these will typically not be filled in. * - Reach was split into 4 segments for the purpose of pre-existing data collection. I - The distributions for these parameters can include information from both the cross-section measurements and the longitudinal profile. 2 - For projects with a proximal USGS gauge in -line with the project reach (added hankfult verification - rare). 3. Utilizing XS measurement data produce an estimate of the bankfull fioodplain area in acres, which should be the area from the top of bank to the toe of the terrace riser/slope. 4 - Proportion of reach exhibiting banks that are eroding based on the visual survey for comparison to monitoring data; 5. Ofvalue/needed only if the n exceeds 3 Table 8. Baseline Stream Data Summary Hannah Bridge Mitigation Site - Reach HB3 Parameter Gauge' Regional Curve Pre -Existing Condition* Reference Reach(es) Data Design Monitoring Baseline Dimension and Substrate - Shallow Only LL UL Eq. Min Mean Med Max SD n Min Mean Med Max SD n Min Med Max Min Mean Med Max SD n Bankfull Width (ft) --- --- --- 11.3 14.9 14.9 18.4 --- 2 10.8 11.5 11.5 12.2 --- 2.0 --- 12.2 --- 11.6 12.0 12.0 12.5 0.4 4 Floodprone Width ft >50 --- --- >50 --- 2 >50 --- --- >40 --- 2.0 --- >50 --- >49.8 >50.7 >50.3 >52.3 1.2 4 Bankfull Mean Depth (ft) --- --- --- 0.9 1.1 1.1 1.2 --- 2 1.3 1.4 1.4 1.4 --- 2.0 --- 1.3 --- 1.0 1.2 1.2 1.4 0.2 4 'Bankfull Max Depth ft 1.7 2.0 2.0 2.3 --- 2 1.8 1.9 1.9 2.0 --- 2.0 --- 1.6 --- 1.4 1.6 1.7 1.8 0.2 4 Bankfull Cross Sectional Area ft' -- --- -- 13.1 1 14.9 1 14.9 1 16.6 1 --- 1 2 14.7 1 15.3 1 15.3 1 15.8 1 -- 2.0 --- 1 15.4 1 --- 1 12.0 1 14.1 1 14.4 15.7 1.8 4 Width/Depth Ratio 9.7 15.0 15.0 20.3 --- 2 7.9 8.7 8.7 9.4 --- 2.0 --- 9.7 --- 8.5 10.4 10.0 13.0 1.9 4 Entrenchment Ratio >2.2 --- --- >2.2 2 >2.2 --- >2.2 2.0 --- >2.2 --- >4.1 >4.2 >4.3 >4.3 0.1 4 Bank Height Rati 1.2 1.3 2 1.0 1.1 1.1 1.1 --- 2.0 --- 1.0 1.0 1.0 1.0 1.0 0.0 4 Profile Shallow Length (ft) --- --- --- --- --- --- 5 --- --- 23 --- --- 10 --- 34 4.7 18.7 16.4 80.8 14.0 30 Shallow Slope (ft/ft) --- --- --- --- --- --- 0.006 --- --- 0.03 --- --- 0.006 --- 0.03 0.0001 0.0121 0.0098 0.0397 0.0097 30 Pool Length (ft) --- --- --- --- --- --- 11.6 --- --- 45.6 --- --- 13 --- 29 7.4 23.8 21.2 50.5 11.6 33 Pool Max depth (ft) --- --- --- --- --- --- --- --- --- --- --- -- --- --- --- --- --- --- --- --- --- Pool Spacing (ft) --- --- --- --- --- --- 37.2 --- --- 55.7 --- --- 39 --- 85 13.3 52.7 54.8 99.1 18.6 33 Pattern Channel Beltwidth (ft) --- --- --- --- --- --- 19 --- --- 57 --- --- 34 --- 70 34 --- --- 70 --- --- Radius of Curvature (ft) --- --- --- --- --- --- 10 --- --- 28 --- --- 23 --- 42 23 --- --- 42 --- --- Rc:Bankfull width (ft/ft) --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- Meander Wavelength (ft) --- --- --- --- --- --- 49 --- --- 170 --- --- 90 --- 151 90 --- --- 151 --- --- Meander Width Ratio --- --- --- --- --- --- 1.6 --- --- 5.3 --- --- 2.8 --- 5.7 2.8 --- --- 5.7 --- --- Transport parameters Reach Shear Stress (competency) Ib/f' --- --- Max part size (mm) mobilized at bankfull -- Stream Power (transport capacity) W/m' Additional Reach Parameters Rosgen Classification E5 E4/5 E4/5 E4/5 Bankfull Velocity (fps) --- Bankfull Discharge (cfs) --- --- Valley length (ft) 1297 842 --- --- Channel Thalweg length (ft) 1388 995 --- --- Sinuosity (ft) 1.07 1.18 1.2 1.2 Water Surface Slope (Channel) (ft/ft) --- 0.29 --- --- Channel slope (ft/ft) 0.003 0.003 0.003 --- 3 Bankfull Flood lain Area acres --- --- --- --- 4% of Reach with Eroding Bank --- --- Channel Stability or Habitat Metric - -i ... Biological or Other - -I -- Shaded cells indicate that these will typically not be filled in. * - Reach was split into 4 segments for the purpose of pre-existing data collection. I - The distributions for these parameters can include information from both the cross-section measurements and the longitudinal profile. 2 - For projects with a proximal USGS gauge in -line with the project reach (added hankfult verification - rare). 3. Utilizing XS measurement data produce an estimate of the bankfull fioodplain area in acres, which should be the area from the top of bank to the toe of the terrace riser/slope. 4 - Proportion of reach exhibiting banks that are eroding based on the visual survey for comparison to monitoring data; 5. Ofvalue/needed only if the n exceeds 3 Table 9. Cross Section Morphology Data Table Hannah ridge Cross Section 1 (Pool) Cross Section 2 (Shallow) Cross Section 3 (Shallow) Cross Section 4 (Pool) Cross Section 5 (Pool) Based on fixed baseline cross sectional area* Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 125.9 125.7 125.8 125.6 125.6 125.8 125.9 126.0 126.0 126.1 124.2 124.2 124.3 124.3 124.3 124.0 123.9 124.0 124.0 123.9 122.1 122.0 122.1 122.1 121.9 Bankfull Width (ft' 9.3 9.4 9.6 8.1 7.5 10.4 12.1 12.7 13.9 13.4 10.9 12.3 12.7 13.1 12.0 11.1 13.6 11.6 16.1 14.8 11.3 12.1 15.1 11.4 11.1 Flood rove Width (ft)' >50.7 >49.9 >50 49.9 >49.9 >50.1 >50.2 >50.2 >50.1 >50 >50 >50 >50.1 >50.1 >50 >50 >50 >50 - - >50 >50 >50 - - Bankfull Mean Depth (ft) 1.1 1.1 - - 1.1 12.1 - - - 1.3 1.1 - - 1.3 1.1 - - 1.0 0.9 - - - Bankfull Max Depth (ft)2 1.8 2.0 2.2 2.7 2.5 1.7 1.7 1.7 1.5 1.8 2.0 1.9 2.0 2.0 2.0 2.5 2.5 2.5 2.5 2.5 2.1 2.2 2.2 2.2 2.2 Low Bank Elevation (ft) - - 125.9 126.0 125.9 1.7 1.7 126.0 126.0 126.0 2.0 1.8 124.2 124.3 124.3 - - 124.0 124.0 123.8 - - 122.1 122.0 121.7 Bankfull Cross Sectional Area (ft2)2 10.0 10.0 11.3 13.6 12.7 11.8 11.8 11.4 11.1 11.3 13.9 13.9 13.8 14.0 13.8 14.8 14.8 15.3 14.3 13.6 11.4 11.4 10.8 10.7 9.7 Bankfull Width/Depth Ratio 8.7 8.7 - - - 9.2 12.4 - - - 8.6 10.9 - - - 8.3 12.6 - - - 11.3 12.8 - - - Bankfull Entrenchment Ratio' - - >4.8 >4.2 >3.9 >4.1 >3.7 >4.6 >4.1 >4.0 >3.9 >4.2 - - Bankfull Bank Height Ratio' 1.0 1.0 1.0 1.0 1.0 1.0 0.9 1.0 1 1.0 1.0 1 1 - - Cross Section 6 (Shallow) Cross Section 7 (Pool) Cross Section 8 (Shallow) Cross Section 9 (Shallow) Cross Section 10 (Pool) Based on fixed baseline cross sectional area* Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on ABASA' 121.7 121.8 121.8 121.8 121.7 118.3 117.9 117.8 117.6 117.3 118.0 118.1 118.2 118.2 118.1 115.9 116.0 116.1 116.0 116.0 115.8 115.6 115.6 115.6 115.5 Bankfull Width (ft)' 12.4 15.2 14.1 13.7 12.5 11.2 10.1 10.0 9.4 9.5 11.6 12.6 21.2 12.3 11.8 12.1 13.4 14.5 13.5 13.7 12.0 10.9 10.4 11.4 10.4 Flood tune Width (ft >50 >50 >50.1 >49.9 >50 >50 >50 >50 - - >49.8 >50 >49.9 >49.8 >49.9 >49.9 >50 >49.9 >50.0 >49.9 >50 >50 >50 - - Bankfull Mean Depth (ft) 1.1 0.9 - - - 1.7 1.9 - - - 1.4 1.2 - - - 1.3 1.2 - - - 1.6 1.7 - - - Bankfull Max Depth (ft)2 1.7 1.7 1.8 1.9 1.9 2.4 2.7 3.4 3.4 3.5 1.8 1.8 1.9 2.1 2.0 1.8 1.9 1.9 2.2 1.8 3.3 3.5 3.3 3.1 3.4 Low Bank Elevation (ft) 1.7 1.4 121.7 121.8 121.7 - - 118.3 118.5 118.4 1.8 1.8 118.2 118.2 118.1 1.8 1.9 116.0 116.0 116.0 - - 115.7 115.6 115.7 Bankfull Cross Sectional Area (ft')' 13.0 13.0 12.3 12.4 13.0 18.9 18.9 24.7 30.1 30.8 15.7 15.7 15.8 15.4 15.3 15.5 15.5 14.6 16.0 14.6 19.1 19.1 20.0 19.6 21.4 Bankfull Width/Depth Ratio 11.8 17.9 - - - 6.6 5.4 - - A 8.5 10.1 - - - 9.4 11.6 - - - 7.5 6.2 - - - Bankfull Entrenchment Ratio' >4 >3.3 >3.5 >4.0 >4.0 >4.3 >4.0 >2.4 >4.1 >4.2 >4.1 >3.7 >3.4 >3.6 >3.6 - - Bankfull Bank Height Ratio' 1.0 0.8 1.0 1 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 - Cross Section 11 (Pool) Cross Section 12 (Shallow) Cross Section 13 (Shallow) Cross Section 14 (Pool) Cross Section 15 (Shallow) Based on fixed baseline cross sectional area* Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on ABASA' 114.5 114.5 114.6 114.5 114.5 114.2 114.2 114.5 114.5 114.6 113.5 113.5 113.7 113.7 113.8 113.4 113.4 113.4 113.8 113.8 111.7 111.7 111.6 111.4 111.4 Bankfull Width (ft)' 12.0 12.7 19.3 18.2 12.8 11.8 11.8 14.1 17.4 12.9 12.5 22.9 18.0 27.0 31.3 11.1 11.8 13.2 14.1 22.0 15.4 15.3 15.4 14.0 14.3 Flood rove Width (ft)' >50 >50 >50 - - >50.7 >50.7 >50.6 >50.8 >50.7 >52.3 >52.6 >52.5 >52.7 >52.5 >50 >50 >50 - - >49.9 >49.9 >49.8 >49.7 >49.6 Bankfull Mean Depth (ft) 1.1 1.0 - - 1.1 1.1 - - 1.0 0.5 - - - 1.3 1.2 - - - 0.7 0.7 - - - Bankfull Max Depth (ft)2 1.8 1.9 1.7 1.9 1.7 1.5 1.5 1.6 1.7 1.7 1.4 1.5 1.5 1.1 1.6 2.2 2.1 2.3 1.9 2.0 1.4 1.4 1.4 1.9 1.9 Low Bank Elevation (ft) - - 114.4 114.4 114.2 1.5 1.6 114.4 114.5 114.6 1.4 1.4 113.5 113.6 113.7 - - 113.5 113.6 113.6 1.4 1.4 111.7 111.6 111.7 Bankfull Cross Sectional Area (ft2)2 13.0 13.0 9.8 12.2 10.6 13.3 13.3 12.2 13.4 13.7 12.0 12.0 10.4 10.0 9.7 14.0 14.0 15.3 1.9 12.2 11.4 11.4 12.1 14.2 15.7 Bankfull Width/Depth Ratio 11.1 12.3 - - - 10.5 10.5 - - - 13.0 43.6 - - - 8.7 9.9 - - - 20.8 20.7 - - - Bankfull Entrenchment Ratio' >4.3 >4.3 >3.6 >3.9 >3.9 >4.2 2.3 >2.9 >4.1 >1.4 >3.2 >3.2 >3.2 >3.4 >3.5 Bankfull Bank Height Ratio' 1.0 1.0 1.0 1 1.0 1 1.0 1.0 1.0 0.9 1.0 0.9 1.0 1.0 1.0 1.1 1.2 Cross Section 16 (Shallow) Cross Section 17 (Shallow) Cross Section 18 (Pool) Cross Section 19 (Shallow) Cross Section 20 (Shallow) Based on fixed baseline cross sectional area* Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on ABASA' 111.3 111.3 111.2 111.1 110.8 123.1 123.1 123.1 123.2 123.0 123.1 123.1 123.1 123.2 122.9 118.9 118.9 118.9 118.9 118.9 115.4 115.3 115.4 115.4 115.3 Bankfull Width (ft)' 18.8 19.3 19.0 16.8 16.3 5.6 5.7 7.9 7.7 5.8 5.8 5.9 9.6 5.3 5.6 7.0 7.3 7.9 7.1 6.9 12.7 12.1 12.3 10.9 11.8 Floodprone Width (ft)' >37 >37 >50.4 >34.9 >41.2 >50.2 >50.1 >50.1 >50.1 >50.0 >50 >50 >50 - >50 >42.2 >41.8 >50.1 >39.8 >40.9 >49.4 >49.8 >49.6 >49.5 >49.4 Bankfull Mean Depth (ft) 0.6 0.5 - 0.5 5.0 - - - 0.6 0.5 - - - 0.6 0.6 - - - 0.9 0.9 - Bankfull Max Depth (ft)2 0.9 0.8 0.8 1.0 1.3 0.9 0.9 0.7 1.0 1.0 1.1 1.2 1.1 1.4 1.3 0.9 0.9 1.0 1.0 1.0 1.6 1.6 1.8 1.6 1.9 Low Bank Elevation (11) 0.9 0.8 111.1 111.2 111.3 0.9 0.7 122.9 123.2 123.0 - - 123.0 123.3 123.0 0.9 1.0 119.0 118.9 118.9 1.6 1.7 115.5 115.2 115.3 Bankfull Cross Sectional Area (ft')' 10.6 10.6 8.1 12.5 19.4 2.9 2.9 2.1 3.2 2.9 3.3 3.3 3.1 4.1 3.6 4.3 4.3 6.0 4.8 4.8 10.9 10.9 13.3 8.9 10.5 Bankfull Width/Depth Ratio 33.3 35.4 - - - 10.6 11.5 - - - 10.2 10.9 - - - 11.3 12.5 - - - 14.9 13.4 - - - Bankfull Entrenchment Ratioll 12 1 >1.9 >2.7 >2.1 >2.5 >9 >8.7 >6.3 >8.8 >8.6 >6 >5.7 >6.4 >4.9 >6.0 >3.9 >4.1 >4.0 >4.6 >4.2 Bankfull Bank Height Ratio' 1 1.0 1 1.0 1 0.8 1 1.6 1.6 1.0 0.8 0.8 1.0 1.0 1.0 1.1 1.2 1 1.1 1.1 1.0 1 1.1 1.1 0.9 1.0 Note: Starting in MY3, the parameters denoted with 1 were calculated using the as -built cross sectional area as the basis for adjusting the bankfull elevation and the parameters denoted with 2 were calculated using the current year low top of bank as the bankfull. Appendix E Hydrology Data Table 10. 2022-2023 Rainfall Summary. Month Average Normal Limits 2022-2023 Johnston County Precipitation* 30 Percent 70 Percent October 3.27 2.17 3.92 0.00 November 3.17 1.82 3.86 3.61 December 3.42 2.27 4.10 3.70 January 3.41 2.39 4.05 0.00 February 3.42 2.26 4.11 3.96 March 3.94 2.89 4.63 3.20 April 3.70 2.43 4.44 2.91 May 4.29 2.93 5.12 4.83 June 4.66 3.13 5.58 2.67 July 5.94 4.79 6.79 5.74 August 5.31 3.57 6.36 4.14 September 5.46 3.84 6.48 11.32 October 3.27 2.17 3.92 - November 3.17 1.82 3.86 - December 3.42 2.27 4.10 - Total Annual * 49.99 45.09 53.19 38.78 Above Normal Limits BelowNormal Limits WETS Station: Smithfield, NC. Approximately 7.44 miles from the site. *Total Annual represents the average total precipitation, annually, as calculated by the 30-year period. Table 11. Documentation of Geomorphically Significant Flow Events. Year Bankfull Events Maximum Bankfull Height (ft) Estimated Date of Highest Event Stage Recorder HB 1 MY12019 2 0.50 9/5/2019 MY2 2020 5 1.30 8/15/2020 MY3 2021 8 1.23 7/ 19/2021 MY4 2022 4 0.80 6/ 1 /2022 MY5 2023 6 1.45 7/14/2023 Stage Recorder BH3 MY12019 3 0.99 9/6/2019 MY2 2020 8 1.67 2/7/2020 MY3 2021 10 1.18 7/19/2021 MY4 2022 3 0.52 1/16/2022 MY5 2023 17 2.18 7/14/2023 Stage Recorder 131-14 MY1 2019 1 1.75 9/6/2019 MY2 2020 12 3.53 2/7/2020 MY3 2021 9 1.30 2/20/2021 MY4 2022 1 0.02 7/10/2022 MY5 2023 9 1.14 7/14/2023 Year Flow Events Maximum Consecutive Flow Days Cummlative Flow Days Flow Gauge TH3 MY12019 0 0 - MY2 2020 200 250 - MY3 2021 133 221 l / l /2021 - 5/ 14/2021 MY4 2022 115 125 1/3/2022 - 4/28/2022 MY5 2023 72 152 11/25/2022 - 4/26/2023 5 3 1 MY5 Hannah Bridge HB1 Stage Recorder Graph � Daily Precip (in) Q' Date SR HB1 Top of Bank fAv �� Q� 10 9 8 7 6 O 5 c�C .Q .v d I - IL 4 3 2 1 0 fires 5 3 1 MY5 Hannah Bridge HB3 Stage Recorder Graph ,1% `titi c� �Av i-1 � Daily Precip (in) Q Date SR HB3 Top of Bank 10 9 8 7 6 c O 5 c�C .Q .v d I - IL 4 3 2 1 0 fires 5 3 1 MY5 Hannah Bridge HB4 Stage Recorder Graph Max Eve it 1. 14ft above TO 12oz3 ,1% � Daily Precip (in) Date SR HB4 ��A 'Jcti� Top of Bank lip 10 9 8 7 6 c O 5 c�C .Q .v d I - IL 4 3 2 1 0 a� ca cn 5 3 1 -1 AV O MY5 Hannah Bridge TH3 Flow Gauge Graph Longest 1 Period of Consecu ive Flow /25/2022 - 4/26/223 Vow 'lll� LLw IJOO Daily Precip (in) AV iry� h�m yQ�Q Date FG TH3 AV Downstream Riffle Elevation o� , 10 9 8 7 6 c O 5 c�C .Q .v d L. IL 4 3 2 1 0 Table 12. 2023 Max Hydroperiod. 2023 Max Hydroperiod (Growing Season 18-Mar through 15-Nov, 242 days) Success Criterion: 12% Consecutive Cumulative Well ID Days Hydroperiod (%) Days Hydroperiod (%) Occurrences GWI 8 3 30 12 7 GW2 10 4 44 18 8 GW3 34 14 74 30 6 GW4 18 7 66 27 8 GW5 70 29 160 66 5 GW6 4 2 21 8 7 GW7 40 16 65 27 5 GW8 3 1 10 4 7 GW8B 6 2 34 14 10 GW9 19 8 55 23 10 GW10 9 4 41 17 9 GW10B 40 17 65 27 4 GW11 19 8 70 29 8 GW12 48 20 66 27 4 GW13 14 6 27 11 5 GW14 10 4 20 8 3 RGW 1 18 7 49 20 6 RGW2 20 8 77 32 10 Table 13. Summary of Groundwater Monitoring Results. Summary of Groundwater Monitoring Results Hannah Bridge Well ID Wetland ID Hydroperiod (%) Year 1 2019 Year 2 2020 Year 3 2021 Year 4 2022 Year 5 2023 Year 6 2024 Year 7 2025 GW1 W1 (E-H) 2 3 4 1 3 GW2 W4 (E-L) 9 8 9 5 4 GW3 W4 (E-L) 18 13 14 11 14 GW4 W6 (E-H) 30 35 29 11 7 GW5 W5 (E-H) 100 81 100 18 29 GW6 W14 (RE) 2 1 1 0 2 GW7 W14 (RE) 1 3 13 2 16 GW8 W14 (RE) 1 3 2 1 1 GW813 W14 (RE) - - - 2 2 GW9 W14 (RE) bom 1 4 8 7 8 GW10 W10 (E-H) 3 5 8 2 4 GW10B W10 (E-H) - - - 20 17 GW11 WI (E-H) 2 9 13 3 8 GW12 W14 (RE) - - 14 2 20 GW13 W14 (RE) - - 2 7 6 GW14 W1 (E-H) - - - - 4 RGW1 W3 (REF) P 17 9 8 5 7 RGW2 W3 (REF) 27 26 39 1 8 E-H: Enhancement -High, E-L: Enhancement -Low, RE: Re-establishment, REF: Reference <5% 1 5-11% 1 >12% Historical Conditions far Johnston County 1895-Present 100% 90% 80% 70% M ¢ 60% IA J 50`}i�a aj L 40% 91 30% 20% 10% 0% oci�ece die *Z; ee d rya eee Time Period (Years): 0 to UPDATE GRAPH RESET GRAPH Show Category, 0 -2017 Invalid year(s), please check your input. The U.S. brought Monitor (2000 present) depicts the location and intensity of draught across the country. Every Thursday, authors from NOAA, USIA and the National brought Mitigation Center produce a new map based on their assessments of the best available data and input from local observers. The map uses five categories: Abnormally Dry (D0), showing areas that may be going into or are coming out of drought, and four levels of drought (D1 (74). Learn more. U.S. Drought Monitor DO D1 D2 D3 D4 LATEST AVAILABLE DATA: 2023-10-24 MY5 Hannah Bridge GW1 12 — 10 8 6 4 2 0 a� v -2 L N -4 3 0 -6 a) m -8 i 0 -10 Q vn -12 - d s 0 -14 c @ -16 > J -18 L -20 -22 -24 • • - -26 -28 -30 -32ffiJ -34 d .1.11.. ,h. . �ryti 41V O to 7.5 Consecutive Days of Hydrology 4/8/2023 - 4/15/2023 � Daily Precip (in) f AV � titiV tiVIV P�� O�w Date GW1 Growing Season Start Growing Season End • • • • • Logger Depth 12 10 8 6 4 2 0 o� ores MY5 Hannah Bridge GW2 12 12 10 8 6 4 2 10 0 -2 -4 d 0 -6 -8 � 8 -10 3 -12 O d -14 00 .� -16 p p -18 Q 6 -20 d -22 v .i -24 d '26 > -28 J -30 d 4 -32 -34 -36 -38 -40 -42 1 12 -44 ........... ...................... ...................... .... ............................ ..... ....... ........ .. .. ............... ............. ..... -46 -48 -50 -52 .� 0 O �o 10 Consecutive Days of Hydrology 3/26/2023 - 4/5/2023 A"VII AV AV 90V AV AV COV3 Date ti� ti� ti� O r ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. � Daily Precip (in) GW2 Growing Season Start Growing Season End • • • • • Logger Depth ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- MY5 Hannah Bridge GW3 12 12 10 8 6 4 10 2 0 Al v -2 8 C/) -4 3 0 -6 @ �. 00 -8 c > O -10 Q 6 v�-12 -- - Q d -14 i a m -16 J -18 4 L '20 -22 .24 -26 2 -28 tu Alp*" -30 -32 J-34 �I.�I� 0 ti� tiry ti� ti� ti� ti� ti6V ti� ti� ti13 ti� tiIb P ti'b Date ............................................................................................................................................................................................................................................................................................................................................................................................................................................................. 33.5 Consecutive Days of Hydrology Dail Preci in GW3 Growin Season Start Growin Season End • • • • • Lo Logger De Depth Ores 3/18/2022 y P� 9 9 99 P ............................................................................................................................................................................................................................................................................................................................................................................................................................................................: MY 5 Hannah Bridge GW4 12 12 10 8 6 4 10 2 0 d c� -2 ca -4 8 Cf) -6 3 O d -8 t �. m -10 :.. > 0 -12 Q � - 0 6 N -14 d N TI Q •i v -16 � `-' a -18 d d -20 J 4 -22 -24 -26 -28 2 -30 ........ . ...................... ...................... .... ............................ . .............. ............. ............. ..... -32 -34 -36 -38 C �o 17.5 Consecutive Days of Hydrology 3/18/2022 - 4/4/2022 AP AV AV AV If 4�lzll� i 14R4� Date cry AV �oQry^� Oory� w � Daily Precip (in) GW4 Growing Season Start Growing Season End • • • • • Logger Depth ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... o� ores 12 10 8 6 4 2 0 c� ca `t -2 3 -4 O m -6 m > -8 O Q -10 s -12 c� -14 m d -16 J d -18 4.0 ca -20 -22 -24 -26 -28 -30 -32 N 1 C��o 69.5 Consecutive Days of Hydrology 3/18/2025 - 5/25/2023 MY 5 Hannah Bridge GW5 Date � Daily Precip (in) GW5 Growing Season Start Growing Season End • • • • • Logger Depth ............................................................................................................................................................................................................................................................................................................................................................................................................................... 12 10 8 :, 2 W Ares MY 5 Hannah Bridge GW6 12 12 10 8 6 4 10 2 0 d -2 c� ca -4 8 Cf) -6 3 O -8 d �. 00 Ilk A -10 > 0 -12 Q 6 N -14 Q d v -16 •i S a -18 d -20 J 4 -22 -24 -26 -28 Inv -30 2 ........... ...................... ...................... .... ............................ ...................... ...................... ............. ..... -32 -34 -36 I -38 .� �I.�I� �.�J11JI L I II, ALA 1 11. 1 1 0 C �o 4 Consecutive Days of Hydrology 7/7/2023 - 7/11/2023 AP AV AV AV le 14�lzll� i 14R4� Date cry AV -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- � Daily Precip (in) GW6 Growing Season Start Growing Season End • • • • • Logger Depth .......................................................................................................................................................................................................................................................................................................................................................................................................................... `ry^� ,rye C �o reso 12 10 8 6 4 2 0 -2 d v -4 ca -6 3 -8 O d -10 m -12 -14 y -16 d v -18 -20 > -22 a� J -24 L d -26 -28 -30 -32 -34 -36 -38 -40 -42 o�' C MY 5 Hannah Bridge GW7 Ad ........... ...................... ...................... .... .................................I ................ .. .. ............... ............. ..... a L 39.5 Consecutive Days of Hydrology 03/18/2023 - 04/26/2023 AV OF1AV Date Daily Precip (in) GW7 Growing Season Start Growing Season End • • • • • Logger Depth ................................................................................................................................................................................................................................................................................................................................................................................................................................. 12 10 E:� 4 2 0 ores 12 10 8 6 4 2 0 -2 d -4 ca ` -6 -8 3 O -10 d m -12 d -14 Q -16 d -18 s -20 d — -22 -24 J -26 4.0 -28 -30 -32 -34 -36 -38 -40 -42 -44 �N ,ryti C to 3 Consecutive Days of Hydrology 4/8/2022 - 4/11/2022 MY 5 Hannah Bridge GW8 tiP, Date � Daily Precip (in) GW8 Growing Season Start Growing Season End • • • • • Logger Depth .............................................................................................................................................................................................................................................................................................................................................................................................................................. 12 10 8 4 2 ores MY 5 Hannah Bridge GW8b 12 12 10 8 6 4 10 2 0 ca `I= -2 8 3 -4 O m -6 m --� � -8 0 0 Q 6 -10 m 'v t -12 -14 a 7@ -16 J 4 m -18 ca -20 .22 ........... ...................... ...................... ...................... ...................... . .................... ............. ..... -24 2 -26 -28 -30 II I -32 - A L A.. 0 ti� tiry ti� ti� ti� ti� ti� ti� ti� ti� ti� ti� ti� ti� p� �o O�� ac �� a QQi �� >Sc '�� lip Date 5.5 Consecutive Days of Hydrology...................................................................................................................................................................................................................................................................................................................................................................................................................................................... ores 8/8/2023 - 8/13/2023 Daily Precip (in) GW8b Growing Season Start Growing Season End • • • • • Logger Depth ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 12 10 8 6 4 2 0 -2 d -4 v -6 O -8 � -10 m -12 -14 -16 N -18 d s -20 v 0 -22 d -24 J -26 L m -28 cC -30 -32 -34 -36 -38 -40 -42 -44 -46 AV O 18.5 Consecutive Days of Hydrology 3/18/2022 - 04/5/2022 MY 5 Hannah Bridge GW9 12 10 8 a O 6 CL L a 4 2 0 ti� ti� ti� AV ti� AV ti� AV ti� ti� AV ti� . . . . . . . . . . . . lip Date ores Daily Precip (in) GW9 Growing Season Start Growing Season End • • • • • Logger Depth 12 10 8 6 4 2 0 -2 d -4 ca ` -6 -8 3 O -10 d m -12 d -14 Q -16 d -18 s -20 d — -22 -24 J -26 4.0 -28 -30 -32 -34 -36 -38 -40 -42 -44 O 10 Consecutive Days of Hydrology 4/18/2023 - 04/16/2023 G0" cry �� irk MY 5 Hannah Bridge GW10 .V Date .................................................................................................................................................................................................................................................................................................................................................................................................................................................... � Daily Precip (in) GW10 Growing Season Start Growing Season End • • • • • Logger Depth .................................................................................................................................................................................................................................................................................................................................................................................................................................................... 12 10 H. 4 2 CI] o� ores MY 5 Hannah Bridge GW10b 12 10 8 6 4 2 m 0 -2 Well found broken during monitoring event on -4 4/26/23. Data from 11/26/2022 to 4/26/2023 is 3 likely incorrect. O -6 d m -8 d 0 -10 Q �n -12 d s -14 S m -16 J -18 L -20 cC -22 -24 AAA Ilk hL i k Ali -26 I V N . ..................... ................. ..... .............................. ..... ............. ... .. ..... . -28 -30 -32 -34 II.� I� I C �o 40 Consecutive Days of Hydrology 6/20/2023 - 7/30/2023 leo If 4�1 i 1;1 Date .................................................................................................................................................................................................................................................................................................................................................................................................................................... � Daily Precip (in) GW10b Growing Season Start Growing Season End ..... Logger Depth ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 12 10 8 4 2 0 Gres 12 10 8 6 4 2 0 -2 -4 m -6 -8 j -10 3 -12 O d -14 m -16 p -18 Q -20 -22 v -24 -26 -28 J -30 d -32 9 -34 -36 -38 -40 -42 -44 -46 -48 -50 -52 MY 5 Hannah Bridge GW11 ........... ............... ...... ...................... .......... ........ ............. ..... ....... ........ .. ............. ..... ............. ..... I I. 1 ti% tiry ti� tir ti� AV ti� ti� AV ti� ti" C �o �¢� �a� �� .ai QQ� �a� ��c �� lip 41Q C� �o Date 18.5 Consecutive Days of Hydrology.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 3/18/2023 - 4/5/2023 Daily Precip (in) GW11 Growing Season Start Growing Season End • • • • • Logger Depth 12 10 8 4 2 0 Gres 12 10 8 6 4 2 d 0 v cv ` -2 O 3 -4 O m -6 m > -8 O Q -10 s -12 v .14 m d -16 J -18 cC 9 -20 -22 -24 -26 -28 -30 -32 G�ti C �o 47 Consecutive Days of Hydrology 3/18/2023 - 5/4/2023 MY 5 Hannah Bridge GW12 11 AA AL A. I, W AWAA1. A 7 All ........... ...................... ...................... ............................. ... .............. . . .. .. . ....................... ..... .. I Date � Daily Precip (in) GW12 Growing Season Start Growing Season End • • • • • Logger Depth ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 12 10 8 4 2 0 Gres 12 10 8 6 4 2 0 v U) - 34 O m -6 m m -8 O Q -10 N -12 v -14 m m -16 J -18 O 9 -20 -22 -24 -26 -28 -30 -32 a�` O MY 5 Hannah Bridge GW13 Well damaged and removed from field for repair. ...................... ................ . ... ... ...... ................... . . ................ .. . . .............. ............. ..... 14 Consecutive Days of Hydrology 7/7/2023 - 7/21/2022 9� i�� f-V4P 14 Date Daily Precip (in) GW13 Growing Season Start Growing Season End • • • • • Logger Depth .......................................................................................................................................................................................................................................................................................................................................................................................................................................... 12 10 8 4 2 0 4ry� ,rye C �o res 12 10 8 6 4 2 0 ca ` -2 3 -4 O m -6 m > -8 O Q -10 s -12 -14 m d -16 J d -18 4.0 ca -20 -22 -24 -26 -28 -30 -32 G�ti ti `�ti p° 10 Consecutive Days of Hydrology :............. 6/20/2023 - 6/30/2023 MY 5 Hannah Bridge GW14 cry �ti� ti� ti� �ry� Date � Daily Precip (in) GW14 Growing Season Start Growing Season End • • • • • Logger Depth ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 12 10 8 4 2 CI] fires 12 10 8 6 4 2 0 d v -2 O m -4 3 O -6 d m -8 d 0 -10 Q �n -12 d s -14 S m -16 J -18 -20 cC -22 -24 -26 -28 -30 -32 -34 0 17.5 Consecutive Days of Hydrology 3/18/2023 - 4/4/2022 Daily Precip (in) MY 5 Hannah Bridge RGW1 Date RGW1 Growing Season Start Growing Season End • • • • • Logger Depth 12 10 H. 4 2 IJ C �O ores 12 10 8 6 4 2 m 0 c� ` -2 O 3 -4 O d -6 m > -8 O Q -10 s -12 v -14 m d -16 J -18 cC 9 -20 -22 -24 -26 -28 -30 -32 tiry o�' O MY 5 Hannah Bridge RGW2 ... VN ...., ..... .. .... ... ..•.' . • . • �I.�I� •... ; .... .... ....... ... ..... . .. ............ . Ill, - - 1. ... ....... .. .. ... 20 Consecutive Days of Hydrology 7/7/2023 - 7/27/2023 90V AP IV AV le 4P i 14R4� Date cti� ti� J >J � � Daily Precip (in) RGW2 Growing Season Start Growing Season End • • • • • Logger Depth ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 12 10 8 4 2 0 res Appendix F Easement Adjustment fires January 6, 2023 Samantha Dailey U.S. Army Corps of Engineers Regulatory Division 3331 Heritage Trade Drive, Suite 105 Wake Forest, NC 27587 3600 Glenwood Avenue, Suite 100 Raleigh, NC 27612 Corporate Headquarters 6575 West Loop South, Suite 300 Bellaire, TX 77401 Main: 713.520.5400 RE: Hannah Bridge Easement Adjustment Memo (DWR # 2017-0537v2) Sam, As previously discussed, RES would like to adjust the Hannah Bridge Mitigation Site easement in the western portion of the site. This area is the only existing access to the powerline right-of- way from the adjacent property for maintanence activities. The access has continued to be utilized since the project's establishment, although it is difficult to determine if this access has been solely by the landowner, the utility company, or a mix of both. Because this adjustment will take place outside of buffer credit generating areas, and no impacts to crediting areas are expected, RES believes the best course of action is to adjust the easement to allow this access. RES will coordinate with the landowner to swap an equivalent portion of land at the downstream end of HB4 where it confluences with Hannah Creek. This would maintain the size of the conservation easement, and avoid the continued encroachment issue. The IRT had the following comments regarding this request. RES' reponses are in blue: DWR is reluctant to support the proposed easement changes without reviewing additional information. DWR requests that RES submit a formal conservation easement modification request, including public benefit justification and discussion of avoidance and minimization measures. If the landowner access is currently being inhibited by property boundaries, updated figures showing parcel lines should be included in the request package. This easement adjustment is being proposed to allow continued access to a powerline easement. The powerline right-of-way was not included in the original conservation easement, but access to said line was overlooked. Negotiating a land swap and updating the conservation easement to allow access to the public utility for maintenance will not affect the size or credit generating areas of the project. Please see attached maps for the proposed area to be cut from the current easement areas and the current parcel lines with the proposed area to be added to the project area. 2. DWR is concerned about the precedence that these easement modifications may create, even if they are minor requests. The landowners agreed to the current easement boundaries five years ago. And if they are new landowners, they should have been aware res.us 0 of the easement boundaries prior to purchasing the property. These conservation easements are meant to hold in perpetuity. While the requested changes result in no direct impacts or losses of mitigation assets, we need to consider the indirect affects that reducing the easement area may have on protected resources. At minimum, DWR needs to show due diligence in reviewing easement modification requests for our records. While the landowner may be also be using this access to enter the power line right-of- way, RES wishes to adjust the easement for the use of the utility company. This access should have been included in the original easement along with the power line itself and it allows for a safe space for the long-term stewards to access and park their vehicles when monitoring the site. Please let me know if you need any additional information. Thank you, /�� 06VU4- Katie Obenauf I Ecologist .may .. r r`1 Tea • � r' f�'r'A �f�... nq `J' !eY?i r." .r' y �. r' ♦ _ .r � •. f �, r r •�,( .)�v}/. fit`.': �,r •\,�. �1r{.w•Nf++y,,U��;,C Y'"',. "ZyG ��y� ,..# f �''•_ » Yi - j �: .�71 '�i� 'v Yf � �Q tWL�lfl 1 �' R` t wM Addition of 0.06 acres to easement in this area. sr Y •al ,* �... a► 3� 't., Ir.Oh s.AuT� �yaP' �'� r ♦ .a, ,t,4.� ' -♦: �' ` 1� - s _ �r�'�pr,. .`- � _ ifs � �h�'r4�1�=.�Y��=�"�C 'i� �4t�,r'�•` t.. ��,.} :'1�a' '�r.�i,}, ir'k� L`�.l �yy�� `}_ � .r l ,r ti _ \ • C� : y .: � -�.. .� -�!iv � ..y . it ��`/ / �; Mj'^ `1t'i�•.. 1�'t'}.,i� �� y'� I. .:�1• •.K ;j.-��. '� � � ate,: 'T, ' !i ��y> Y , 11 a �A c �r'�[� w`y'�.r. J\.r . ;l t• �� S •� i�1.f�v�✓ r .14�.y� +� w'►�P +-i ;�,i �.�, , �,� • • �,i` ' .,ram •r �* � '