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HomeMy WebLinkAbout20171291 Ver 1_RESYadkin01_Gideon MY3 Monitoring Report_20230816ID#* 20171291 Version* 1 Select Reviewer: Maria Polizzi Initial Review Completed Date 08/16/2023 Mitigation Project Submittal - 8/16/2023 Is this a Prospectus, Technical Proposal or a New Site?* Yes No Type of Mitigation Project:* Stream Wetlands Buffer Nutrient Offset (Select all that apply) Project Contact Information Contact Name: * Email Address: Ryan Medric rmedric@res.us Project Information ID#: * 20171291 Version:* 1 Existing ID# Existing Version Project Type: DMS Mitigation Bank Project Name: Gideon County: Surry Document Information Mitigation Document Type:* Mitigation Monitoring Report File Upload: RESYadkin01_Gideon MY3 Monitoring Report.pdf 15.45MB Please upload only one PDF of the complete file that needs to be submitted... Signature Print Name:* Ryan Medric Signature: YEAR 3 MONITORING REPORT GIDEON MITIGATION SITE SURRYCOUNTY, NOR TH CAR OLINA USACE Action ID: SAW-2017-01462 I DWR Project *17-1291 vl RES YADKIN of UMBRELLA MITIGATION BANK Provided by: Ores Bank Sponsor: Environmental Banc & Exchange, LLC An entity of Resource Environmental Solutions 3600 Glenwood Ave, Suite loo Raleigh, NC 27612 919-209-1056 August 2023 3600 Glenwood Avenue. Sua.f c mo Malefgh NC 276u2 Corporate Headquarters 6575 We sl Loop Soulb, SL16Pc 300 f,ellafre, rFX 774ou M,Dfn: 7u ;.�720.5 00 August 15, 2023 Steve Kichefski U.S. Army Corps of Engineers Regulatory Division 151 Patton Ave. Room 208 Asheville, NC 28801-5006 RE: Gideon Year 3 Monitoring Report (SAW-2017-01462) I RES Yadkin 01 Umbrella Mitigation Bank Dear Mr. Kichefski, Please find attached the Gideon Year 3 Monitoring Report. In Year 3, all four vegetation plots met the 320 stems per acre success criteria. The average planted stems per acre was 951 and the average planted stem height was 4.7 feet. Livestakes are becoming well established along the stream banks throughout the site. Cross section plots were stable when compared to as -built conditions. Both stage recorders documented bankfull events and the flow gauge documented 219 consecutive days of flow. The three wetland gauges recorded hydroperiods in the range of five to 60 percent. In 2022, headcuts were observed along the top of bank near cross section three and four. These areas were repaired using haybales, coir matting, seeding, and livestaking in May 2023. Photos of the repairs are included in the report. Please see the IRT comments received on December 28, 2022 with RES' responses below: Erin Davis (NCDWR) comments: 1. Please include photos of the 2022 headcut repairs in the MY3 report. DWR is concerned that haybale placement on the bank may be only a temporary fix/band-aid. Photos acre 4iclluded in Appendb( B. 2. DWR appreciated the level of detail provided in the narrative, CCPV callouts and graphs. INoted. DWR is not requesting a site visit. We support the proposed credit release. Todd Tugwell (USACE) comments: 1. 1 was unable to find the current credit release schedule/timeline or current ledger in your submission. Please be sure to include these documents for all projects in the future as they are critical to our review and tracking of your project. lFhe credit release scheduled and updated credit ledger are attached to this report,. RES is requesting a 10% stream credit release (291.127 SMUs) for the completion of the Year 3 Monitoring Report. Please see enclosed the annual monitoring report, credit release timeline, and an updated credit ledger. Thank you, Ryan Medric I Project Manager I Transaction Credits Released Credits Debited Number To Bank From Bank ■ RES YADKIN 01 UMBRELLA MITIGATION BANKING INSTRUMENT GIDEON STREAM CREDIT LEDGER (HUC 03040101) Friday, January 6, 2023 Credits Reserved Purchaser Project Permit Number Date HUC Credits Released'. Task 1 2/19/20 Credits Released'. Task 2 9/30/21 Credits Released'. Task 3 7/8/22 Credits Released'. Task 4 12/28/22 Project Name: Sponsor Name: USACE Action ID: NCDWQ Action ID: Wilmington District Mitigation Bank Credit Release Schedule Gideon Stream Mitigation Project EBX SAW-2017-01462 2017-1291v1 County: Surry 8-Digit HUC: 3040101 Year Project Instituted: 2019 Date Prepared: 8/15/2023 Total Potential Credits Stream Credits Forested Wetland Credits Non -Forested Credit Classification Wetland Credits Warm Cold Riparian Riparian Water Cool Water Water Riverine Non-Riverine Non-Ri parian Coastal Potential Credits from Mitigation Plan 2,962.061 Potential Credits from As -Built Survey 2,962.061 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 WQ SMUs Scheduled Releases Riparian Riverine Riparian Non-Riverine Non-Ri parian Scheduled Releases Coastal Release Date Date 1 (Bank/Site Establishment)''' 15% 487.490 15% 15% 12/31/2019 2/19/2020 2 (Year 0/As-Built)' 15% 436.690 15% 15% 6/30/2021 9/30/2021 3 (Year 1 Monitoring) 10% 291.130 10% 10% 3/31/2022 7/8/2022 4 (Year 2 Monitoring) 10% 291.130 10% 15% 12/15/2022 12/28/2022 5 (Year 3 Monitoring) 15% 20% 6 (Year 4 Monitoring) 5% 145.564 5% 10% 12/15/2024 7 (Year 5 Monitoring) 10% 291.127 15% 15% 12/15/2025 8 (Year 6 Monitoring) 591. 145.564 5% NA NA 12/15/2026 9 (Year 7 Monitoring) 10% 291.118 10% NA NA 12/15/2027 Stream Bankfull Standard 10% 291.127 NA NA NA NA NA NA 12/15/2025 Total Credits Release to Date 1506.440 Contingencies (if any): Signature of W ilmington 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 ofthe final Mitigation Plan; 3) Mitigation bank site must be secured; 4) Delivery of the financial assurances described in the Mitigation Plan; 5) Recordation ofthe 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 10% reserve of credits to be held back until the bankfull event performance standard has been met. Date Table of Contents 1.o Project Summary.................................................................... 1.1 Project Location and Description ........................... 1.2 Project Goals and Objectives ................................... 1.3 Project Success Criteria ........................................... Stream Restoration Success Criteria ............................. Vegetation Success Criteria ............................................ 1.4 Project Components ................................................. 1.5 Stream Design/Approach........................................ 1.6 Construction and As -Built Conditions ................... 1.7 Monitoring Performance(MY3)............................. Vegetation........................................................................ Stream Geomorphology................................................. Stream Hydrology........................................................... WetlandHydrology......................................................... 2.0 Methods.................................................................................. 3.o References.............................................................................. 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 Table 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 ........................................................... 1 ...........................................................1 ........................................................... 1 ........................................................... 2 ........................................................... 2 ........................................................... 3 ........................................................... 3 ........................................................... 3 ........................................................... 5 ........................................................... 5 ........................................................... 5 ........................................................... 6 ........................................................... 6 ........................................................... 6 ........................................................... 7 ........................................................... 7 Appendix D: Stream Measurement and Geomorphology Data Table 8. Baseline Stream Data Summary Table 9. Cross Section Morphology Data Table Cross Section Overlay Plots Appendix E: Hydrology Table 10. 2023 Rainfall Summary Table 11. Documentation of Geomorphically Significant Flow Events Stream Flow Hydrographs Table 12. 2023 Max Hydroperiod Table 13. Summary of Groundwater Monitoring Results Groundwater Hydrographs i.o Project Summary 1.1 Project Location and Description The Gideon Project ("Project") is located within a rural watershed in Surry County, North Carolina approximately 10 miles north of Elkin. Water quality stressors affecting the Project prior to restoration included livestock production, agricultural practices, and lack of riparian buffer. The Project presents stream restoration, enhancement, and preservation, generating 2,962.067 Cool Stream Mitigation Units (SMU). The Project's total easement area is 11.23 acres within the overall drainage area of 3,225 acres. The Project is between two separate portions of the Division of Mitigation Services (DMS) Little Sebastian Site. While each site could be developed independently of the other, the combined easements will result in a much larger contiguous protected corridor and high -quality aquatic habitat. The Little Sebastian Site has a total easement area that is approximately 25.90 acres and presents 8,068 LF of stream restoration, enhancement, and preservation. Therefore, a total of 37.13 acres and 12,850 LF of stream will be protected in perpetuity when combining the totals on Little Sebastian and Gideon. Grazing livestock have historically had access to most stream reaches within the Project. The lack of riparian buffer vegetation, deep-rooted vegetation, and unstable channel characteristics have contributed to the degradation of stream banks throughout the Project area. The stream design approach for the Project was to combine the analog method of natural channel design with analytical methods to evaluate stream flows and hydraulic performance of the channel and floodplain. The analog method involved the use of a reference reach, or "template" stream, adjacent to, nearby, or previously in the same location as the design reach. The template parameters of the analog reach were replicated to create the features of the design reach. The analog approach is useful when watershed and boundary conditions are similar between the design and analog reaches (Skidmore et al., 2001). Hydraulic geometry was developed using analytical methods to identify the design discharge. The Project has been constructed and planted and will be monitored on a regular basis throughout the seven-year post -construction monitoring period, or until performance standards are met. The Project will be transferred to Unique Places to Save (UP2S). This party shall serve as conservation easement holder and long-term steward for the property and will conduct periodic inspection of the site to ensure that restrictions required in the conservation easement are upheld. Funding will be supplied by the responsible party on a yearly basis until such time an endowment is established. 1.2 Project Goals and Objectives Through the comprehensive analysis of the Project's maximum functional uplift using the Stream Functions Pyramid Framework, specific, attainable goals and objectives will be realized by the Project. These goals clearly address the degraded water quality and nutrient input from farming that were identified as major watershed stressors in the 2009 Upper Yadkin Pee -Dee River RBRP. These goals and objectives reflect those stated in the Gideon Project Final Mitigation Plan. The Project goals are: Improve water transport from watershed to the channel in a non -erosive manner in a stable channel; Improve flood flow attenuation on site and downstream by allowing for overbanks flows and connection to the active floodplain; Gideon Mitigation Site i Year 3 Monitoring Report Surry County, NC August 2023 • Improve instream habitat; • Restore and enhance native floodplain vegetation; and • Indirectly support the goals of the 2009 Upper Yadkin Pee -Dee RBRP to improve water quality and to reduce sediment and nutrient loads. The Project goals were addressed through the following project objectives: • Designed and reconstructed stream channels sized to convey bankfull flows that maintain a stable dimension, profile, and planform based on modeling, watershed conditions, and reference reach conditions; • Permanently excluded livestock from stream channels and their associated buffers; • Added in -stream structures and bank stabilization measures to protect restored and enhanced streams; • Installed habitat features such as brush toes, constructed riffles, woody materials, and pools of varying depths to restored and enhanced streams; • Reduced bank height ratios and increased entrenchment ratios to reference reach conditions; • Increased forested riparian buffers to at least 30 feet on both sides of the channel along the Project reaches with a hardwood riparian plant community; • Treated exotic invasive species; and • Established a permanent conservation easement on the Project. Functional uplift, benefits, and improvements within the Project area, as based on the Function Based Framework, are outlined in the Final Mitigation Plan. 1.3 Project Success Criteria The success criteria for the Project follows the 2016 USACE Wilmington District Stream and Wetland Compensatory Mitigation Update, the Gideon Final Mitigation Plan, and subsequent agency guidance. Cross section and vegetation plot monitoring takes place in Years 0, 1, 2, 3, 5, and 7. Stream hydrology and visual monitoring takes place annually. Specific success criteria components are presented below. Stream Restoration 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. For C/E channels, bank height ratio shall not exceed 1.2, and the entrenchment ratio shall be no less than 2.2 within restored reaches. For B channels, bank height ratio shall not exceed 1.2, and the entrenchment ratio shall be no less than 1.4 within restored reaches. Channel stability should be demonstrated through a minimum of four bankfull events documented in the seven-year monitoring period. Gideon Mitigation Site 2 Year 3 Monitoring Report Surry County, NC August 2023 Digital images are 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. Stream restoration reaches will be monitored to document intermittent or seasonal surface flow. This will be accomplished through direct observation and the use of stream gauge transducers with data loggers. Reaches must demonstrate a minimum of 30 consecutive days of flow. Vegetation Success Criteria Specific and measurable success criteria for plant density within the riparian buffers on the Project will follow IRT Guidance. The interim measures of vegetative success for the Project will be the survival of at least 320 planted three-year old trees per acre at the end of Year 3, five-year old trees at six feet in height at the end of Year 5, and the final vegetative success criteria will be 210 trees per acre with an average height of eight feet at the end of Year 7. 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. Moreover, any single species can only account for up to 50 percent of the required number of stems within any vegetation plot. Any stems in excess of 50 percent will be shown in the monitoring table but will not be used to demonstrate success. 1.4 Project Components The Project area is comprised of a single 11.23-acre easement location along Mill Creek and three unnamed tributaries, totaling 4,782 LF, which eventually drain into the Yadkin River. Through stream restoration, enhancement, and preservation, the Project presents 4,782 LF of proposed stream, generating 2,962.067 Cool SMUs. The stream mitigation components are summarized below. Mitigation credits presented below are based upon the Approved Mitigation Plan. Mitigation Approach Linear Feet Ratio Base Cool SMU Restoration Enhancement 1 Enhancement 111 Preservation 2,283 493 1,498 508 1 1.5 5 10 2,283.000 328.667 299.600 50.800 Tota I 4,782 2,962.067 1.5 Stream Design/Approach The stream component of the Project included priority I stream restoration, enhancement I, enhancement III, and preservation. Stream restoration incorporated the design of a single -thread meandering channel, with parameters based on data taken from reference sites, published empirical relationships, regional curves developed from existing project streams, and NC Regional Curves. Analytical design techniques were also a crucial element of the project and were used to determine the design discharge and to verify design stability. Gideon Mitigation Site 3 Year 3 Monitoring Report Surry County, NC August 2023 The following stream treatment was performed on the Project reach: Reach JN4-A An enhancement III approach was used for the reach to address eroded banks and channel entrenchment. Enhancement activities included: - Livestock exclusion; and - Riparian planting. Reach JN4-B An enhancement I approach was used for the reach to address eroded banks and channel entrenchment. Enhancement activities included: - Removal of pipe in channel and fixing of current culvert; - Installing log and rock structures to provide grade control and habitat; - Establishing a riffle -pool sequence throughout the reach; - Installing brush toe protection on meander bends; - Livestock exclusion; and - Riparian planting. Reach JN5 An enhancement I approach was used for the reach to address eroded banks and channel entrenchment. Enhancement activities included: - Installing log and rock structures to provide grade control and habitat; - Establishing a riffle -pool sequence throughout the reach; - Installing brush toe protection on meander bends; - Livestock exclusion; and - Riparian planting. Reach JN6-A A preservation approach was used for the reach to address eroded banks and channel entrenchment. Preservation activities included: - Livestock exclusion; and - Riparian planting. Reach JN6-B An enhancement III approach was used for the reach to address eroded banks and channel entrenchment. Enhancement activities included: - Livestock exclusion; and - Riparian planting. Reach JN6-C An offline priority I restoration approach was used for the reach to address eroded banks and channel entrenchment. Restoration activities included: - Re -grading a new single thread channel in the existing floodplain; - Installing log and rock structures to provide grade control and habitat; - Establishing a riffle -pool sequence throughout the reach; - Installing brush toe protection on meander bends; - Filling the existing channel; - Livestock exclusion; and Gideon Mitigation Site 4 Year 3 Monitoring Report Surry County, NC August 2023 Riparian planting. Reach MC2-A An offline priority I restoration approach was used for the reach to address eroded banks and channel entrenchment. Restoration activities included: - Re -grading a new single thread channel in the existing floodplain; - Installing log and rock structures to provide grade control and habitat; - Establishing a riffle -pool sequence throughout the reach; - Installing brush toe protection on meander bends; - Filling the existing channel; - Livestock exclusion; and - Riparian planting. Reach MC2-B An enhancement III approach was used for the reach to address eroded banks and channel entrenchment. Enhancement activities included: - Livestock exclusion; and - Riparian planting. 1.6 Construction and As -Built Conditions Stream construction was completed in February 2021 and planting was completed in March 2021. The Gideon Project was built to design plans and guidelines with no significant changes during construction. The as -built survey and record drawings are included in Appendix E. Planting plan changes included replacing blackgum (Nyssa sylvatica) and elderberry (Sambucus canadensis) with sugarberry (Celtis laevigata) and buttonbush (Cephalanthus occidentalis). These changes were based on bare root availability. A planted species summary is included in Appendix C. 1.7Monitoring Performance (MY3) The Gideon Year 3 monitoring activities were performed in June and August 2023. All year three monitoring data is present below and in the appendices. The Project is on track to meeting vegetation and stream interim success criteria. Vegetation Monitoring of four fixed vegetation plots was completed on August 8, 2023. Vegetation data are in Appendix C, associated photos are in Appendix B, and plot locations are in Appendix B. MY3 monitoring data indicates that all plots are exceeding the interim success criteria of 320 planted stems per acre. Planted stem densities ranged from 405 to 1,376 planted stems per acre with a mean of 951 planted stems per acre across all plots. A total of 11 planted species were documented within the plots. Volunteer species were noted in two of the plots. The average stem height in the plots was 4.7 feet. Visual assessment of vegetation outside of the monitoring plots indicates that the herbaceous vegetation is becoming well established throughout the project. Volunteer tag alder (Alnus serrulata) and black willow (Salix nigra) have established and are flourishing throughout the Project area, likely spreading from the now -mature livestakes. Areas of Chinese privet (Ligustrum sinense) and multiflora rose (Rosa multiflora) were Gideon Mitigation Site 5 Year 3 Monitoring Report Surry County, NC August 2023 treated along JN4-A, JNS, JN6-C, and MC2-B in May 2023; no additional areas of invasive species were observed during MY3 monitoring. The fencing and gates were all in good condition throughout the site and no encroachment was observed. Stream Geomorphology Geomorphology data for MY3 was collected in June 2023. Summary tables and cross section plots are in Appendix D. Overall, the Year 3 cross sections and profile relatively match the proposed design. The MY3 conditions show that shear stress and velocities have been reduced for the restoration reaches. These reaches were designed as coarse gravel to cobble bed channel and remain classified as a coarse gravel to cobble bed channel post -construction. Visual assessment of the stream channel was performed to document signs of instability, such as eroding banks, structural instability, or excessive sedimentation. A few areas of head -cutting were observed along MC2-A during MY2 monitoring, most likely a result of overland flow. These areas were repaired in May 2023 using haybales, coir matting, seeding, and livestaking. Documentation of the repairs can be found in Appendix B. The channel is transporting sediment as designed and will continue to be monitored for aggradation and degradation. Stream Hydrology Two stage recorders (on MC2-A and JN6-C) and one flow gauge (on JN6-B) were installed in March 2021 and document bankfull events and flow days, respectively. Both gauge types record readings at a frequency of once per hour, 24 hours per day. The stage recorder on JN6-C documented one bankfull event on July 29, 2023, measuring 0.09 feet above the top of bank. The stage recorder on JN6-C documented one bankfull event on July 29, 2023, measuring 0.09 feet above the top of bank. The stage recorder on MC2-A measured two bankfull events, with the highest one on July 29, 2023, measuring 0.11 feet above the top of bank. A picture of this bankfull event (July 29, 2023), captured by a flow camera installed upstream of MC2-A on the Little Sebastian easement has been included in Appendix B. The photo was taken at 6:45pm on July 29, however, the stream data shows that the actual bankfull event occurred earlier that day, sometime closer to 12:00pm. The flow gauge documented one flow event, lasting 219 days. All recorded streams are on track to pass hydrology metrics. Stream hydrology data is included in Appendix E. Gauge locations can be found on Figure 2 and photos are in Appendix B. Wetland Hydrology Three groundwater wells with automatic recording pressure transducers were installed in March 2021. The goal of the groundwater wells is to track the hydrology of the jurisdictional wetlands on site post - construction. There is no hydroperiod success criteria forthese groundwater wells. During MY3 groundwater well 1 (GW1) had a 5% hydroperiod. In MY2, this well was found snapped in half and was replaced on November 2, 2022. Groundwater well 2 (GW2) had a 60% hydroperiod, and groundwater well 3 (GW3) had an 18% hydroperiod. Wetland hydrology data can be found in Appendix E and gauge locations can be found on Figure 2. Gideon Mitigation Site 6 Year 3 Monitoring Report Surry County, NC August 2023 2.0 Methods Stream cross section 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 10 cross -sections. Survey data were imported into CAD, ArcGIS®, and Microsoft Excel® fordata processing and analysis. The stage recorder (JN6-C) and flow gauge (JN6-B) include an automatic pressure transducer placed in PVC casing in a pool. The elevation of the bed and top of bank at each stage recorder are used to detect bankfull events and the elevation of the bed and crest of the downstream riffle at the flow gauge is used to detect flow days. Due to the large size of the channel on MC2-A, the stage recorder was installed with the transducer equal to the top of bank elevation. This means any positive reading should be a bankfull event. However, there are a number of insignificant positive readings, less than 0.1 feet, so only events greater than 0.1 feet were reported. Vegetation success is being monitored at four fixed monitoring plots. Vegetation plot monitoring follows the CVS-EEP Level 2 Protocol for Recording Vegetation, version 4.2 (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. Wetland hydrology is monitored to track the hydrology of the jurisdictional wetlands on site post - construction. This is accomplished with three automatic pressure transducer gauges (located in groundwater wells) that record daily groundwater levels. 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. Gauge installation followed current regulatory guidance. Visual observations of primary and secondary wetland hydrology indicators are also recorded during quarterly site visits. .g.o References Griffith, G.E., J.M.Omernik, J.A. Comstock, M.P. Schafale, W.H.McNab, D.R.Lenat, T.F.MacPherson, J.B. Glover, and V.B. Shelburne. (2002). Ecoregions of North Carolina and South Carolina, (color Poster with map, descriptive text, summary tables, and photographs): Reston, Virginia, U.S. Geological Survey (map scale 1:1,500,000). Lee Michael T., Peet Robert K., Roberts Steven D., and Wentworth Thomas R., 2008. CVS-EEP Protocol for Recording Vegetation Level. Version 4.2 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 (2019). Gideon Final Mitigation Plan. Schafale, M.P. 2012. Guide to the Natural Communities of North Carolina, Fourth Approximation. North Carolina Natural Heritage Program, Division of Parks and Recreation, NCDENR, Raleigh, NC. USACE. (2016). Wilmington District Stream and Wetland Compensatory Mitigation Update. NC: Interagency Review Team (IRT). Gideon Mitigation Site 7 Year 3 Monitoring Report Surry County, NC August 2023 Appendix A Background Tables Table 1. Gideon Project - Mitigation Assets and Components Existing Mitigation As -Built Migitation Restoration Priority Mitigation Mitigation Project Segment Footage or Plan Footage Category Level Level Ratio (X:1) Plan Credits Footage or Comments Acreage or Acreage Acreage JN4-A 213 213 Cool EIII 1 5.00000 42.600 213 Livestock exclusion & planting JN4-B 249 249 Cool El 1 1.50000 166.000 249 Structures, livestock exclusion, & planting JN5 262 244 Cool El 1 1.50000 162.667 244 Structures, livestock exclusion, & planting JN6-A 508 508 Cool P 1 10.00000 50.800 508 Livestock exclusion & planting JN6-B 707 707 Cool EIII 1 5.00000 141.400 707 Livestock exclusion & planting Full channel restoration, livestock JN6-C 956 1,239 Cool R 1 1.00000 1239.000 1239 exclusion, & planting Full channel restoration, livestock MC2-A 1,109 1,044 Cool R 1 1.00000 1044.000 1044 exclusion, & planting MC2-B 578 578 Cool EIII 1 5.00000 1 115.600 578 Livestock exclusion & planting Project Credits Restoration Level Stream Riparian Wetland Non -rip Wetland Coastal Marsh Warm Cool Cold Restoration 2283.000 Re-establishment Rehabilitation Enhancement Enhancement) 328.667 Enhancement)) Enhancement III 299.600 Creation Preservation 50.800 NSBW TOTAL 2,962.067 Table 2. Project Activity and Reporting History Gideon Mitigation Project Elapsed Time Since grading complete: 2 Yr., 5 Mo. Elapsed Time Since planting complete: 2 Yr., 5 Mo. Number of reporting Years": 3 Activity or Deliverable Data Collection Complete Completion or Delivery Restoration Plan NA Jun-19 Final Design — Construction Plans NA Sep-20 Stream Construction NA Mar-21 Site Planting NA Mar-21 As -built (Year 0 Monitoring — baseline) Jan-21 Jun-21 Year 1 Monitoring Nov-21 Jan-22 Stream Bank Repairs (MC2-A) - Nov-21 Invasive Treatment - Dec-21 Year 2 Monitoring XS: July-22 Veg: Sept-22 Oct-22 Supplementary Stream Bank Repairs (MC2-A) & Invasive Treatment - May-23 Year 3 Monitoring XS: Jun-23 Veg: Aug-23 Aug-23 Year 4 Monitoring Year 5 Monitoring Year 6 Monitoring Year 7 Monitoring 1 = The number of reports or data points produced excluding the baseline Table 3. Project Contacts Table Gideon Mitigation Project Designer RES / 3600 Glenwood Ave., Suite 100, Raleigh, NC 27612 Primary project design POC A. Frasier Mullen, PE Construction Contractor KBS Earthwork Inc. / 5616 Coble Church Rd., Julian, NC 27283 Construction contractor POC Kory Strader Survey Contractor Ascension Land Surveying, PC /116 Williams Road, Mocksville, NC 27028 Survey contractor POC Chris Cole, PLS Planting Contractor Shenandoah Habitats Planting contractor POC David Coleman Monitoring Performers RES / 3600 Glenwood Ave, Suite 100, Raleigh, NC 27612 Project Manager POC Ryan Medric (703) 424-6313 Monitoring POC Hannah Gadai (704) 516-5170 Table 4. Project Background Information Project Name Gideon County Surry Project Area (acres) 11.23 Project Coordinates (latitude and longitude) 36.39659.-80.85833 Planted Acreage (Acres of Woody Stems Planted) 4.26 Project Watershed Summary Information Physiographic Province 45e - Northern Inner Piedmont River Basin Yadkin USGS Hydrologic Unit 8-digit 03040101 USGS Hydrologic Unit 14-digit 03040101080020 DWR Sub -basin 03-04-01 Project Drainage Area (Acres and Square Miles) 3,191 Project Drainage Area Percentage of Impervious Area <1 % Reach Summary Information Parameters JN4-A JN4-B JN5 Length of reach (linear feet) 213 249 244 Drainage area (Acres) 37 39 198 Perennial, Intermittent, Ephemeral P P P Appendix B Visual Assessment Data Gideon MY3 Fixed Vegetation Monitoring Plot Photos Vegetation Plot 1 (8/8/2023) Vegetation Plot 3 (8/8/2023) Vegetation Plot 2 (8/8/2023) Vegetation Plot 4 (8/8/2023) Gideon MY3 Monitoring Device Photos Stage Recorder JN6-C Stage Recorder MC2-A Gideon Monitoring Device Photos (6/27/2023) Groundwater Well 1 Groundwater Well 3 Groundwater Well 2 Gideon Crossing Photos (6/27/2023) Crossing on JN6-C (Looking Upstream) Crossing on MC2-A (Looking Upstream) Crossing on JN6-C (Looking Downstream) Gideon Bank Erosion (5/9/2023) MC2-A Repairs MC2-A Repairs Invasive Treatment (May 2023) Invasive Treatment (May 2023) Bankfull event photo taken by the flow camera installed just upstream on the Little Sebastian Project; this reach (Little Sebastian MCI-C) flows directly into the Gideon Project (MC2-A). Appendix C Vegetation Plot Data Appendix C. Vegetation Plot Data Table 5. Planted Species Summary Common Name Scientific Name Mit Plan % As -Built % Total Stems Planted Willow Oak Quercus phellos 15 15 700 River Birch Betula nigra 15 15 700 Water Oak Quercus nigra 15 14 700 Northern Red Oak Quercus rubra 10 10 500 Yellow Poplar Liriodendron tuhpifera 10 10 500 Sycamore Platanus occidentalis 10 10 500 Sugarberry Celtis laevigata 0 10 500 Buttonbush Cephalanthus occidentalis 0 6 300 Persimmon Diospyros vir iniana 5 6 300 Green Ash Fraxinus pennsylvanica 10 4 200 Elderberry Sambucus canadensis 5 0 0 Nyssa sylvatica Blackgum 5 0 0 Total 4,900 Planted Area 4.26 As -built Planted Stems/Acre 1,150 Table 6. Vegetation Plot Mitigation Success Summary Averaged Success Planted Volunteer Total Planted Plot # Criteria Stems/Acre Stems/Acre Stems/Acre Stem Height Met? (ft) 1 1012 971 1983 Yes 7.5 2 1376 0 1376 Yes 3.8 3 1012 81 1093 Yes 3.6 4 405 0 405 Yes 3.5 Project Avg 951 263 1214 Yes 4.7 Appenclix C. Vegetation Plot Data Table 7. Stem Count Total and Planted by Plot Species Stem count Species count Stems per ACRE ©©©©0000 Appendix D Stream Measurement and Geomorphology Data Appendix D. Table 9 - Monitming Data -Dimensional Moiphology, Summmy (Dimensional Paiameteis —Cioss Sections) ®®®®mmm®®®®mmm®®®®mmm®®®®mmm®®®®mmm ®®®mmmmaaaammmaaaammm®®®®mmm®®®mmmm ®®®mmmmaaammmmaaammmm®®®®mmm®®®®mmm ®®®mmmm®®®mmmm®®®mmmm®®®mmmm®®®mmmm ®®®®mmmaaammmmaaammmm®®®®mmm®®®®mmm ®®®®mmm®®®®mmm®®®®mmm®®®®mmm®®®®mmm ®®®mmmmaaammmmaaammmm®®®®mmm®®®mmmm ®®mmmmmaaammmmaaammmm®®mmmmm®®®mmmm ®®®®mmm®®®®mmm®®®®mmm®®®®mmm®®®®mmm ®®®mmmm®®®mmmmaaammmm®®®mmmmaaammmm ®®®mmm®®mmmmaaammmm®®®mmmmaaammmm ®®®mmmmm®®mmmm®mmmmmm®®®mmmm®®®mmmm ®®®®mmm®®®mmmmaaaammm®®®aaaammm mmmm ®®®mmmm®®®mmmm®®®mmmm®®®mmmmmmmmmmm ®®®mmmm®®®mmmmaaammmm®®®mmmmaaammmm m®mmmmm®®®mmmmaaammmm®®®mmmmaaammmm Upstream Downstream Gideon - Reach MC2-A - Cross Section 1 - Riffle - Restoration 1149 1148 1147 1146 " 4dk(k 2koltK6(utK4k�fdliE�BNdfv,�Y.ln�r���r�5 1 145 0 �r� rma�n��>y f - - �rr�R � - - - /�JY L•YLL•1•L•J•YL L•�"�'� L YL L•1•YL•i•LL•L• /iA L•1•Lj ����� 1144 w 1143 m {5�� 1 1142 yy 1 141 rrmrnm r 1140 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 Distance (ft) •,����������������������������������� MYO 2020 .............................� MY1 2021 ,.............. MY2 2022 �������������������������• MY3 2023 — — — Approx. Bankfull Floodprone Area 3X Vertical Exaggeration • Low Bank Height g9era Cross Section 1(Riffle) MYO MYl MY2 MY3 MY5 MY7 MY+— Bankfull ElevationBased on. - 1144.78 1144.7 1144.4 1144.7 Bankfall Width (ft)' 22.5 21.3 21.9 21.5 Flood one Width (ft)' >65 >65 >64.8 >65.1 Bankfall Max Depth (ft)2 3.0 3.4 3.6 3.5 Low Bank Elevation (ft)i tt44.78 1 1144.7 1144.E 1144.8 Bankfall Cross Sectional Area (ft)� 46.7 48.7 50.8 48.7 Bankfall Entrenchment Ratio' >2.9 >3.1 >3.0 >3.0 1 Bankfall Bank Height Ratio' 1.0 1.0 1.1 1.0 1 - Uses the as -built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream Gideon - Reach MC2-6A - Cross Section 2 - Pool - Restoration 1147 1146 1145 „ 1144- 81) 1143 n" o w n 1140 - 1139 1138 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 Distance (ft) MYO 2020 ........................� MY 1 2021 ,....... MY2 2022 — MY3 2023 — — — Approx. Bankfull ...... Low Bank Elevation e�atm� Cross Section 2 (Pool) MYO MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on ABAXSAr 1144.73 1144.9 1144.7 1144.9 Bankfull Width ft' - - - - Flood rone Width ft' - - - - Bankfull Max Depth (ft) 4.8 5.1 5.3 5.4 Low Bank Elevation (ft) - Bankfull Cross Sectional Area ft 2 58.4 56.2 59.3 60.0 Bankfull Entrenchment Ratio' - - - Bankfull Bank Height Ratio' 1 - Uses the as -built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream Gideon - Reach MC2-A - Cross Section 3 - pool - Restoration 1142 1141 -. -. --- ----. --- -. 1140 wr�rrrrr� rmar rmitlumuwu, i rmnrlrlllrtllNRrt(HSffRrflr�� 1139 1138 /00 0 0 1 137 - "Yp' - - IQ W 1136 - - d 1135 - - - 1a 1134 -. -. --- ----. --- -. 1133 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 Distance (ft) MYO 2020 ............. MY1 2021 MY2 2022 — MY3 2023 — — -Approx. Bankfull ...... Low Bank Elevation 3X Vertical Exaggeration Cross Section 3 (Pool) MYO MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on ABASAr 1139.67 1139.7 1139.8 1139.8 Bankfull Width (ft)' - - - - Flood rone Width ft' - - - - Bankfull Max Depth (ft)2 4.8 5.3 5.1 5.2 Low Bank Elevation ft Bankfull Cross Sectional Area (ft2)z 62.3 1 60.1 59.6 60.7 Bankfull Entrenchment Ratio' - - BankfullBank Hel htRatio' - - 1 - Uses the as -built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream Gideon - Reach MC2-A - Cross Section 4 - Riffle - Restoration 1143 1142 -- -- ---. ---- --. - 1141 -. -- ---. ---- --. - °1 1140 "!'�'^�-�ur�r�iu rir3rrrrRrfut>���IV ��fflFgrur _ _ _ _ _ _ _ _ _ _ _ �e�aw�'r�nllinlwmrarrrr>ryu�G�It1SD,'9>�➢J�1" ..... .. ..... ....... 1139 1138 w 1137 A% nm�N 1136 - -- — W 1135 -- -- ---. ---- --. - 1134 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 Distance (ft) MYO 2020 ..................... MY1 2021 ,.............. MY2 2022 3x vertical -- MY3 2023 — — —Approx. Bankfull Floodprone Area Exaggeration - Low Bank Elevation Cross Section 4 (Riffle) MYO MY1 MY2 MY3 MY5 MY7 MY+ BankfuH Elevation (ft) -Based on ABASAr 1139.45 1139.3 1139.2 1139.3 Bankfull Width (ft' 22.9 21.5 22.2 21.9 Flood one 'Width (ft)' >65 >64.5 >64.5 >64.5 Bankfull Max Depth (ft)2 3.3 3.8 4.0 4.1 Low Bank Elevation (ft)l 1139.45 1 1139.4 1 1139.5 1 1139.5 Bankfull Cross Sectional Area (ft2)2 53.0 56.0 60.1 58.0 Bankfull Entrenchment Ratio' >2.8 >3 >2.9 >2.9 BankfullBank Height Ratio' 1.0 1.0 1 1.1 4 1.1 1 - Uses the as -built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream Gideon Reach JN4-B - Cross Section 5 - Riffle - Enhancement 1 1150 1 149 1 148 nimu. ' »uarrp a...... m iii�oii�inmo»ia�iRfrirmubir'n�k➢7lai�s7�m�my t �y°dl i4d�4j4E4u1� �,'P'�111 1147 m - 0011 - - _ WHYIN�ID;9im�rirm ,o vilV4 ➢� W 1146 1145 -- - - / - (�borllily3 '... Af 1144 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) -] MYO 2020 ...................... � MY1 2021 ,����������������.. MY2 2022 � MY3 2023 --- Approx. Bankfull Floodprone Area -•---- Low Bank Elevation 3X Vertical Exaggeration Cross Section 5 (Riffle) MYO MY1 MY2 MY3 MYS MY7 MY+ Bankfull Elevation (ft) - Based on AB-XS_v 1145.38 1145.4 1145.3 1145.4 Bankfull Width ft' 5.6 5.3 5.4 5.4 Flood cone Width (ft' 9 8.9 9.5 10.7 Bankfull Max Depth (ft 0.9 2.0 2.1 2.1 Low Bank Elevation (ft) 1145.38 1 1146.5 1 1146.4 1146.4 Bankfull Cross Sectional Area (ft2)z 3.3 11.3 11.3 11.6 Bankfull Entrenchment Rati o' 1.6 1.7 1.8 2.0 Bankfull Bank Height Ratio' 2.3 2.2 2.1 2.0 1 - Uses the as -built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream Gideon - Reach JN5 - Cross Section 6 - Riffle - Enhancement 1 1141 1140 1 139 _. `�uiwWu�4' 1V14 4mi �fr � 1138 v�rRrr�r �rRFr� .................................................... ................ ......................- , 1� 1137 1 1136 1135 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) �...................................... MYO 2020 .. .......................I MY1 2021 ,�•��•��•��•��•��•�m MY2 2022 MY3 2023 - - - Approx. Bankfull Floodprone Area • • Low Bank Elevation 3X Vertical Exaggeration Cross Section 6 (Riffle) MYO MY1 MY2 MY3 MY5 MY7 MY+ BankfuH Elevation (ft) -Based on ABASAr 1137.06 1137.4 1137.4 1137.3 Bankfull Width (ft' 8.3 9.3 9.5 9.0 Flood one 'Width (ft)' 31.8 34.7 >35.2 >36.3 Bankfull Max Depth (ft)2 2.0 2.6 2.7 3.0 Low Bank Elevation (ft)l 1137.06 1 1138.2 1 1138.1 1 1138.0 BankfWl Cross Sectional Area (ft2)2 10.1 19.2 18.2 17.9 BankfWl Entrenchment Ratio' 3.2 3.7 >3.7 >4.0 Bankfull Bank Height Ratio' 1.6 1.5 1 1.4 4 1.3 1 - Uses the as -built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream Gideon - Reach JN6-C - Cross Section 7 - Riffle - Restoration 1149 1148 1147 1146 . .... .... . 'lox M LU 1145 - 1144 - 1143 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO 2020 . ............................. . MY1 2021 ............... MY2 2022 2023 —Approx. Bankfull Floodprone Area Low Bank Elevation 3X Vertical Exaggeration Cross Section 7 (Riffle) MYO Myl MY2 Myl MY5 MY7 MY+ BankfuH Elevation (ft) -Based on ABASA' 1145.18 1145.2 1145.3 1145.3 Bankfall 'Width (ft)' 7.2 7.4 9.7 9.0 Flood one 'Width (ft)' >50 >50.2 >50 >50.1 Bankfall Max Depth (ft)2 1.1 1.0 1.0 1.1 Low Bank Elevation (ft)l 1145.18 1 1145.2 1 1145.2 1 1145.3 1 1 1 BankfrIl Cross Sectional Area (ft2)2 5.0 4.6 4.4 4.7 BankfrIl Entrenchment Ratio' >6.9 >6.8 >5.1 4 >5.5 Bankfall Bank Height Ratio' 1.0 1.0 1 0.9 1.0 I - Uses the as -built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream Gideon - Reach JN6-C - Cross Section 8 - pool - Restoration 1149 1148 1147 1146 ' u°`+ - - �ormNJmYD'llwlvllvllwwlflmlvllvilruvi�l�lrurmuGlYUG18+G dllfrdmPrd �l4(�((k((l6ltrrG�rrG�tmuriurv„�r✓! o --------------------— — �y�riwlr3lYG!�LY',�NJJ4"'l�i 1 145 _ xMIt - - it ,� i4 1144 1143 1142 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO 2020 rI'l""I'll""I'll'll""I'll""I'lI MY1 2021 .,,,1.1.1.1.1.1., MY2 2022 — MY3 2023 — — — Approx. Bankfull ----- Low Bank Elevation 3X Vertical Exaggeration Cross Section 8 (Pool) MYO MY1 MY2 MY3 MY5 MY7 MY+ BankfuU Elevation (ft) - Based on ABASA' 1145.22 1145.3 1145.4 1145.5 Bankfull Width(ft' - - - - Flood one Width ft' - - - - Bankfall Max Depth (ft)2 1.9 1.6 1.4 1.4 Low Bank Elevation ft Bankfrll Cross Sectional Area (ft) 10.4 9.1 8.6 8.0 Bankfrll Entrenchment Ratio' - - - Bankfrll Bank Height Ratio' 1 - Uses the as -built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream Gideon - Reach JN6-C - Cross Section 9 - Riffle - Restoration 1140 1139 1138- � ",4 , �IT'gapXJBd. Ana w 1136jy, "1hWi?dii�Mltttvun'" "a'" "�l'k`,r+l)99>➢9Y7 1 135 - - - _ 1134 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) �...................................... MYO 2020 �.........................� MY1 2021 ,�������������... MY2 2022 �������������������������• MY3 2023 - - -Approx. Bankfull Floodprone Area • • Low Bank Elevation 3X Vertical Exaggeration Cross Section 9 (Riffle) MYO MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 1135.24 1135.2 1135.3 1135.3 Badldull Width (ft)' 6.8 7.3 7.6 6.1 Flood cone Width (ft)' 16.2 16.8 17.7 21.4 Badkfull Max Depth (ft)2 0.4 0.4 0.4 0.5 Low Bank Elevation (ft) 1135.24 1 1135.3 1135.3 1135.4 Badkfull Cross Sectional Area (ft) 1.4 2.2 1.2 1.6 Baddull EntrenclunentRatio' 2.4 2.3 2.3 3.5 BaddullBank Height Ratio' 1.0 1.3 0.9 1.1 1 - Uses the as -built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream Gideon - Reach JN6-C - Cross Section 10 - pool - Restoration 1140 1139 1138 r 1137 m ,�,�nne i m � � w 1136r%3iro,�tilmm'""'r %ry nNi�'ir"' t 1135 ..... ....... -- -- '"^�.,.. a��wr osa --- ------ ---j g od� 1134 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO 2020 1......................... MY1 2021 .1.,.,.,.,.,." MY2 2022 MY3 2023 — — —Approx. Bankfull ...... Low Bank Elevation 3X Vertical Exaggeration Cross Section 10 (Pool) MYO MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on ABAXSA' 1134.79 1135.0 1135.0 1135.0 Bankfull Width (ft)' - - - - Flood rone Width ft' - - - - Bankfull Max Depth (ft)2 0.4 0.8 0.4 0.6 Low Bank Elevation (ft) Bankfull Cross Sectional Area (ft)� 1.4 4.4 1.1 2.4 Bankfull Entrenchment Ratio' - - - BankfullBank Height Ratio' 1 - Uses the as -built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Appendix E Hydrology Table 10. 2023 Rainfall Summary Month Average Normal Limits Raven Knob Station Precipitation 30 Percent 70 Percent January 3.89 2.58 4.66 2.4 February 3.18 2.17 3.79 2.98 March 3.86 2.65 4.60 2,44 April 4.12 2.60 4.97 May 4.56 2.88 5.51 3.26 June 4.58 3.16 5.45 July 5.26 3.83 6.19 �.61 August 4.74 2.57 5.78 2.67 September 4.37 2.47 5.33 - October 3.60 2.37 4.32 - November 3.04 1.59 3.72 - December 3.84 2.63 4.58 - Total Annual ** 49.04 31.50 58.90 29.54 del l:rriuts t�3a1 I Within Normal ts *Raven Knob CRONOS Station is Approximately 6 miles north of the site Table 11. Documentation of Geomorphically Significant Flow Events Year Bankfull Ewnts Maximum Bankfull Height (ft) Estimated Date of Highest Event Stage Recorder JN6-C MYl 2021 0 - - MY2 2022 2 0.38 7/9/2022 MY3 2023 1 0.09 7/29/2023 Stage Recorder MC2-A MYl 2021 0 - - MY2 2022 2 0.13 4/5/2022 MY3 2023 2 0.11 7/29/2023 Year Flow Events Maximum Cons ecutiw Flow Days Cummlative Flow Days Maximum Consecutive Flow Date Range Flow Gauge JN6-B MYl 2021 1 244 244 3/19/2021 - 11/18/2021 MY2 2022 1 262 262 l/l/2022 - 9/20/2022 MY3 2023 1 219 219 l/l/2023 - 8/8/2023 Table 12. 2023 Max Hydroperiod 2023 Max Hydroperiod (Growing Season 18-Mar through 15-Nov, 242 days) '� Consecutive Cumulative Well ID Days Hydroperiod (°/a) Days Hydroperiod Occurrences GW1 10 5 52 25 10 GW2 127 60 127 60 1 GW3 37 18 80 38 8 Table 13. Summary of Groundwater Monitoring Results Summary of Groundwater Monitoring Results Gideon Hydroperiod (%) Well ID Year 1 (2021) Year 2 (2022) Year 3 (2023) Year 4 (2424) Year 5 (2425) Year 6 3026 Year 7 202' GWl 5 5 5 GW2 97 23 60 GW3 40 19 18 2023 Gideon MY3 JN6-C Stage Recorder Graph 5.000 4.000 2.000 1.000 0.000 Date ............................................................... DalyPrecipin)........ �.SR JN6-C................. .Top of Bank 1.5 1.0 0.5 0.0 U) Ul -0.5 -1.0 2023 Gideon MY3 MC2-A Stage Recorder Graph Date 6.0 5.0 4.0 2.0 1.0 0.0 2023 Gideon MY3 JN6-B Flow Gauge Graph 2.0 1.s 219 Days 1/1/2023-8/Iy19 ofC:onsec tive Flow 2.023 1.0 I 0.s w mu � 0.0 O.s -1.0 -1.5 ....�I. I I. ..1 �. .L.d .I . 1 �......� 1 I ....... 1 I 1 .L..... .I� L......... I 1......... .. .Ia...... . 1 I 1 I�......1... �I. ...... II .I 1 I . �......... . 1 h� wryry \ryry \ry9 \ryh \ry9 \ry9 \ry^� \ryh \ry"� o Ory o� off` oy o6 O� o� Date 7.0 6.0 5.0 0 m 4.0 'm 0 m 0 3.0 2.0 1.0 0.0 Table 12.2023 Max Hydroperiod 2023 Max Hydroperiod (Growing Season 18-Mar through 15-Nov, 242 days) Well ID Days Consecutive Hydroperiod 4%) Days Cumulative Hydroperiod occurrences GWl 10 5 52 25 10 GW2 127 60 127 60 1 GW3 37 18 80 38 8 Table 13. Summary of Groundwater Monitoring Results Summary of Groundwater Monitoring Results Gideon Hydroperiod, Well ID Year 1 (2021) Year 2 (2022) Year 3 (2023) Year 4 (2024) Year 5 (2025) Year 6 2026 Year 7 2027 GW1 5 5 5 GW2 97 23 60 GW3 40 19 18 12 10 8 6 a w U 2 W 3 0 0 w m 2 w 0 Q -4 w U -6 c -8 w J w -10 A -12 NE! -16 -18 2023 Gideon MY3 GW1 Date iiiiiiiiiiiDaily.Precip (in) :-�--GW1 -,,,,,,,,,Growing Season Start —Growing Season End 8.000 7.000 6.000 5.000 0 m 'm 4.000 -o E 0 3.000 2.000 1.000 0.000 M-1 12 10 8 6 a w U 2 U) 3 0 0 w m 2 w 0 Q -4 w U -6 c -8 w J w -10 A -12 NE! -16 -18 2023 Gideon MY3 GW2 wo \oti \ory \ory \oh \ab \ob \ab \01 \01 Date Dail Pr i in-�--GW2 ����Growin Season Start �-Growin Season End Y.............G..(in).................................................._.^^^"�..'.................9...........................................................................@..........................................; 8.000 7.000 6.000 5.000 0 m 'm 4.000 -o m 0 3.000 2.000 1.000 0.000 M-1