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HomeMy WebLinkAbout20171041 Ver 1_Little Sebastian_100027_MY2_2022_20230127ID#* 20171041 Version* 1 Select Reviewer: Ryan Hamilton Initial Review Completed Date 02/01/2023 Mitigation Project Submittal - 1/27/2023 Is this a Prospectus, Technical Proposal or a New Site?* O Yes O No Type of Mitigation Project:* Stream Wetlands Buffer Nutrient Offset (Select all that apply) Project Contact Information Contact Name:* Email Address:* Paul Wiesner paul.wiesner@ncdenr.gov Project Information ........................................................................................................................................................................................................................................................................ ID#:* 20171041 Version:* 1 Existing ID# Existing Version Project Type: • DMS Mitigation Bank Project Name: Little Sebastian Mitigation STREAM Site County: Surry Document Information Mitigation Document Type:* Mitigation Monitoring Report File Upload: Little Sebastian_ 100027_MY2_2022.pdf 6.13MB Please upload only one PDF of the complete file that needs to be submitted... Signature Print Name:* Paul Wiesner Signature: * Year 2 Monitoring Report FINAL LITTLE SEBASTIAN SITE NCDMS Project #100027(Contract # 7187) | RFP 16-006993 (Issued 9/16/2016) USACE Action ID: SAW-2017-01507|DWR Project #2017-1041 Surry County, North Carolina Yadkin River Basin HUC 03040101 Provided by: Resource Environmental Solutions, LLC For Environmental Banc & Exchange, LLC Provided for: NC Department of Environmental Quality Division of Mitigation Services January 2023 3600 Glenwood Avenue, Suite 100 Raleigh, NC 27612 Corporate Headquarters 6575 W Loop S #300 Bellaire, TX 77401 Main: 713.520.5400 January 16, 2023 Paul Wiesner NC DEQ Division of Mitigation Services Asheville Regional Office 2090 U.S. 70 Highway Swannanoa, NC 28778-8211 RE: Little Sebastian Mitigation Site: Year 2 Monitoring Report (NCDMS Project ID #100027) Listed below are comments provided by DMS on December 1, 2022 regarding the Little Sebastian Mitigation Site: Year 2 Monitoring Report Draft and RESÔ responses. General: At the April 19, 2022, IRT Credit Release meeting, the IRT asked about the projectÔs rain gauge. RES reported that it was an off-site rain gauge and noted that the crest gauge reporting is conducted every 24-hours. Due to the lack of bankfull events reported, has RES considered installing an on-site rain gauge? Rain data for this site is obtained from The Raven Knob CRONOS station, approximately 6 miles north of the site, and provides accurate daily rain data for the surrounding area. In the past, the use of on-site rain gauges has shown to be less reliable than data from established weather stations, due to battery life, water catchment issues, clogged gauges, and other general accuracy issues, and therefore, has not been considered for this site. In the future, the USACEÔs Antecedent Precipitation Tool (APT) may be utilized in conjunction with RESÔ current rain data retrieval method to better review climactic conditions. General: The IRT also recommended more frequent (2-4 hour) crest gauge data recordation to confirm project bankfull events. In the revised report, please indicate the crest gauge recording frequency in MY2 (2022). The recording frequency for both crest and flow gauges on the site is once per hour, 24 hours per day. This has been added to the report. General: Please confirm that the entire project boundary was walked and assessed as part of the MY2 (2022) monitoring effort, and all conservation easement encroachment has been reported accordingly. The entire project boundary was walked during MY2 monitoring. Encroachment issues have been noted in the report and will be addressed prior to MY3 monitoring efforts. General: Please be sure to provide photo documentation of overbank events in MY3 (2023) and future monitoring reports. Is any photo documentation of the overbank event reported in MY2 (2022) available? If so, please include it in the revised monitoring report. Flow cameras have not yet been installed on site but will be installed prior to the MY3 monitoring efforts to capture photo documentation of overbank events. res.us Section 1.7 Monitoring Performance (MY2): Thank you for relocating the fencing in May 2022 as discussed in the MY0 & MY1 (2021) reports. In the report text, please confirm that all project fencing is now located outside of the conservation easement or on the conservation easement line as required. This has been confirmed in Section 1.7. Section 1.7 Monitoring Performance (MY2) - Vegetation: In the report text, please further describe the total 0.83-acre encroachment areas observed on the site. Was the encroachment and project vegetation damage associated with livestock encroachment or landowner mowing? Please discuss how the encroachment was resolved with the landowner? The report notes that additional signage will be installed along the project boundary/conservation easement to prevent further encroachment. Please ensure that enough additional signage and horse tape are installed to clearly mark the conservation easement and establish an understandable mowing boundary for the landowner/s. Further description regarding the encroachment and associated vegetation damage has been added to Section 1.7: ÑTwo areas of mowing encroachment along the eastern boundary of the Project, adjacent to BS1, were observed during Year 2 monitoring. The mowing has resulted in two areas of low stem density; one is 0.49 acres and the other is 0.34 acres. This roughly 0.83-acre area will be replanted with native container trees, chosen in reference to the original planting list (Appendix C) and based on supply availability, during this dormant season. Additional signage and horse tape (in areas where visibility between markers may be limited) will be installed along this side of the easement to mark a clear boundary to prevent further mowing.Ò The encroachment will be resolved with the landowner by placing clear easement markers, signage, and horse tape where necessary, in the impacted areas. If further encroachment is observed in the future, a formal letter will be sent to the landowner. Section 2.0 Methods: In this section, please provide the methodology for the flow gauges installed on the site and the associated data interpretation. How is the DS Riffle Elevation utilized in the flow gauge data interpretation? Methodology regarding the project flow gauges has been added to Section 2.0. Flow detection is calculated by subtracting the water depth measurement at the flow gauge by the water depth measurement of the downstream riffle. Once this number is calculated, corrected HOBO readings can be used alongside the flow detection to quantify flow events, i.e., any readings greater than the flow detection equal stream flow. CCPV Maps Ï Figure 2: Please add a callout to the map to clearly define the MY2 (2022) encroachment areas reported. The callout/s should also indicate that these areas will be replanted in the 2022/ 2023 dormant season as specified in the report. These call outs have been added to the encroachment/low stem density areas in Figure 2. CCPV Maps Ï Figure 2: A steep stream bank was observed on MC3-B/ MC3-C near the crossing during the last DMS monitoring site visit (2021). Please confirm that the bank continues to remain stable. This bank continues to remain stable. Visual Stream Stability Assessment Tables: Visual stream stability assessment tables should include Enhancement I reaches as well as Restoration reaches. Please update the monitoring report and digital support files accordingly. Table 5 has been updated accordingly. 2 Little Sebastian Crossing Photos - July 12th, 2022: Please review and update the crossing photos provided. The photos for the crossing at JN2-D & JN3-B are the same photo sets. Additionally, the crossing name for MC3-B/C should be updated. These duplicate crossing photos are accurate for the crossing on JN3-B; unfortunately, the MY2 crossing photo for JN2-D was lost during monitoring data download. Crossing photos from MY1 for JN2-D are included for reference and will be updated and included in the MY3 report. Crossing MC3-B/C caption has been revised. Little Sebastian Crossing Photos - Please add upstream and downstream crossing photos for the crossing at MC1-A/B; the crossing at MC1-B; and the crossing at BS1-E. The IRT has requested supplemental photos of the all project culvert inlets and outlets to confirm crossing stability and sufficient organism passage. The upstream and downstream crossing photos for BS1-E are included in the MY2 report. The crossing photos for MC1-A/B were lost during monitoring data download but will be updated and included in the MY3 report. MC1-B does not have a crossing, just an easement break, therefore, no photos were taken. Appendix D Ï Cross Sections: Please review and QA/QC the cross-section data provided in Table 11 and the corresponding project cross-section graphs. Cross sections 1; 2; 3 and 11 show notable changes for Bankfull Bank Height Ratio between MY1 and MY2; however, these changes do not appear to be reflected in the cross-section graphs provided. Once reviewed, please discuss the individual cross-section Bankfull Bank Height Ratio changes in the revised report text. Please see the reviewed cross section discussions below, and in the report. Cross Section 1- because this is an Enhancement I section with steeper, uneven slopes, choosing the same location to call top of bank, year to year, is difficult; therefore, minor changes are expected in bank height ratios. Additionally, because the morphology tables are set to round numbers to one decimal place, the change from MY1 to MY2 may look more drastic than it is. MY1, cross section 1 had a bank height ratio of 1.380952381; MY2 cross section 1 had a bank height ratio of 1.467336683 (only 6% change). This is less than a 10% difference. Cross Section 2- because this is an Enhancement I section with steeper, uneven slopes, choosing the same location to call top of bank, year to year, is difficult; therefore, minor changes are expected in bank height ratios. The left top of bank was called at 1211.91ft in the field, but upon desktop review, it is more likely that the top of bank is at 1211.66ft, as the low top of bank. This changes the bank height ratio to 1.577205882. This is a 4% change from the MY1 bank height ratio of 1.516791045. Cross Section 3- because this is an Enhancement II section with steeper slopes, choosing the same location to call top of bank, year to year, is difficult; therefore, minor changes are expected in bank height ratios. The right top of bank was called at 1170.983ft in the field, but upon desktop review, it is more likely that the top of bank is at 1170.703ft, as the low top of bank. This changes the bank height ratio to 1.054081633. This is a 6% change from the MY1 bank height ratio of 1.127348643. Cross Section 11 Ï this cross section is in a portion of the project that displays uneven slopes along both banks, and in this case, a very steep left bank; therefore, calling the same top of bank, year to year, is difficult. Minor changes are expected to occur, especially as the stream settles in the early stages of the project as this is a Restoration reach. The left top of bank was called at 1136.665ft in the field, but upon desktop review, it is more likely that the top of bank is at 1136.429ft, as the low top of bank. This changes the bank height ratio to 0.915041783. This is a 14% change from MY1 bank height ratio of 1.07194244604311; however, because this section has such uneven, sloped banks, the top of bank could have been miscalled 3 in MY1. MY2 more closely resembles as-built (MY0) conditions/numbers, which displayed a low bank height ratio of 1; this is only an 8% change between MY0 and MY2. This cross section and reach will continue to be monitored for changes that may impact the condition of the stream as a whole. Appendix E Ï Hydrology Data - MY2 Little Sebastian GW1 graph: Please review and QA/QC to confirm that the 32 days (15%) reported is accurate. The groundwater level appears to drop below the 12-inch mark during the 32 days reported as ÑconsecutiveÒ. The groundwater level does drop below the 12-inch mark during the 32-day stretch; however, the groundwater gauge reads twice a day, and each of the instances where the level drops below 12 inches, it is only for one reading that day, not both. RES determines a consecutive streak by beginning with at least two days of readings above 12 inches, and then at least one reading a day above the 12-inch mark, until there are two readings in a row under 12-inches, ending the consecutive day count, which, in this case began on May 4, 2022, ending the 32-day stretch. Please reference the GW1 raw data in the digital files (5. Hydrology Data) to see where the determinations come from. Digital Support File Comments: Please revise the visual vegetation condition assessment table to reflect the areas of low stem or bare areas identified in the text and/or submitted with the digital data. All areas meet or exceed the minimum threshold of .10 acres. Please update the digital support files and MY2 report as necessary. The encroachment area has now been duplicated as a low stem density area as well. Since they are linked issues, they share the same acreages. On Figure 2, the area is symbolized as red simple hatch since it is encroachment (additional orange simple hatch denoting low stem density would clutter the shapes and create symbology confusion). These were the only vegetation problem areas observed in MY2. The table and digital files have been updated. 4 Table of Contents 1.0 Project Summary.................................................................................................................................. 1 1.1 Project Location and Description.......................................................................................... 1 1.2 Project Goals and Objectives................................................................................................. 1 1.3 Project Success Criteria.......................................................................................................... 2 Stream Restoration Success Criteria........................................................................................... 2 Vegetation Success Criteria.......................................................................................................... 3 1.4 Project Components............................................................................................................... 4 1.5 Stream Mitigation Approach................................................................................................. 4 1.6 Construction and As-Built Conditions.................................................................................. 7 1.7 Monitoring Performance (MY2)............................................................................................ 7 Vegetation...................................................................................................................................... 7 Stream Geomorphology............................................................................................................... 8 Stream Hydrology......................................................................................................................... 9 Wetland Hydrology....................................................................................................................... 9 2.0 Methods..............................................................................................................................................10 3.0 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 Table Figure 1. Site Location Map Appendix B: Visual Assessment Data Figure 2. Current Conditions Plan View Table 5. Visual Stream Morphology Stability Assessment Table 6. Vegetation Condition Assessment Vegetation Plot Photos Monitoring Device and Crossing Photos Appendix C: Vegetation Plot Data Table 7. Planted Species Summary Table 8. Vegetation Plot Mitigation Success Summary Table 9. Stem Count Total and Planted by Plot Species Appendix D: Stream Measurement and Geomorphology Data Table 10. Baseline Stream Data Summary Table 11. Cross Section Morphology Data Table Cross Section Overlay Plots Appendix E: Hydrology Data Table 12. 2022 Rainfall Summary Table 13. Documentation of Geomorphically Significant Flow Events Table 14. 2022 Max Hydroperiod Table 15. Summary of Groundwater Monitoring Results Stream Flow Hydrographs Groundwater Hydrographs 1.0 Project Summary 1.1Project Location and Description The Little Sebastian Mitigation Site (“the Project”) is located in Surry County, approximately 10 miles north of Elkin. The Project presents 4,554.300 Cool Stream Mitigation Units (SMU) along Mill Creek and three unnamed tributaries. The Project’s total easement area is approximately 25.91 acres within the overall drainage area of 3,261 acres. The Project has two separate portions and in between those portions is the Gideon Mitigation Site. The Gideon Mitigation Site has a total easement area that is approximately 11.23 ac and presents 4,782 linear feet of stream restoration, enhancement, and preservation. Therefore, a total 37.14 ac and 12,887 LF of stream are protected in perpetuity. Grazing livestock historically had access to all stream reaches within the Project. The lack of riparian buffer vegetation, deep- rooted vegetation, and unstable channel characteristics contributed to the degradation of stream banks throughout the Project area. The Project 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 the NCDEQ Stewardship Program. 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. 1.2Project 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 were 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. The Project will address outlined RBRP Goals 2, 4, and 6 (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; 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 objectives to address the goals are: Little Sebastian Site1 Year 2 Monitoring Report Surry County, NCJanuary2023 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; Implemented one agricultural BMP in order to limit inputs of sediment, nutrients, and fecal coliform to streams from surrounding farming operations; Treated exotic invasive species; and Established a permanent conservation easement on the Project. 1.3Project Success Criteria The success criteria for the Project follows the 2016 USACE Wilmington District Stream and Wetland Compensatory Mitigation Update, the Little Sebastian 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, wetland 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. Bank height ratio shall not exceed 1.2, and the entrenchment ratio shall be above 1.4 within restored riffle cross sections. Channel stability should be demonstrated through a minimum of four bankfull events documented in the seven-year monitoring period. 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 Little Sebastian Site2 Year 2 Monitoring Report Surry County, NCJanuary2023 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 hydraulic pressure transducers with data loggers. Reaches must demonstrate a minimum of 30 consecutive days of flow. Flow gauges will be installed on JN2-A and BS1-A. The flow gauge on BS1-A will also be capable of monitoring bankfull events. Vegetation Success Criteria Specific and measurable success criteria for plant density within the riparian buffers on the Project follow IRT Guidance. The interim measures of vegetative success for the Project is the survival of at least 320 planted three-year old trees per acre at the end of Year 3, 260 trees per acre with an average height of six feet at the end of Year 5, and the final vegetative success criteria is 210 trees per acre with an average height of eight feet at the end of Year 7. Volunteer trees are counted, identified to species, and included in the yearly monitoring reports, but are not counted towards the success criteria of total planted stems until they are present in the plot for greater than two seasons. 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. Little Sebastian Site3Year 2 Monitoring Report Surry County, NCJanuary2023 1.4Project Components The project streams were significantly impacted by livestock production, agricultural practices, and a lack of riparian buffer. Improvements to the Project help meet the river basin needs expressed in the 2009 Upper Yadkin Pee-Dee River Basin Restoration Priorities (RBRP) as well as ecological improvements to riparian corridor within the easement. Through stream restoration, enhancement, and preservation, the Project presents 4,554.300 Cool Stream Mitigation Units (SMU) (Table 1). Mitigation ApproachLinear Feet Ratio Cool Base SMU Restoration 2,758 12,721 Enhancement I 5971.5 398 Enhancement II 1,898 2.5 759.2 Enhancement II1,3725274.4 Enhancement II 8197.5 109.2 Enhancement II 24310 24.3 Preservation 41810 41.8 Total 8,068 4,327.9 Credit Loss in Required Buffer-278.7 Credit Gain for Additional Buffer505.1 Total Adjusted SMUs4,554.300 1.5Stream Mitigation Approach The Project includes priority I stream restoration, enhancement I, enhancement II, and preservation. Priority I stream restoration incorporates 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 also were a crucial element of the project and were used to determine the design discharge and to verify the design as a whole. Reach JN2-A - Preservation activities included improving the existing livestock exclusion fencing and buffers greater than 30 feet. The easement was extended to provide preservation beyond the origin point of the stream as per the PJD. Reach JN2-B - Enhancement activities included improving habitat through supplemental buffer plantings and livestock exclusion fencing. Minimal bank grading and buffer re-establishment was done along the downstream end. In-stream structures such as log sills and one log cross vane were installed for stability and to improve habitat. The restoration of the riparian areas at the downstream end filters runoff from adjacent pasture, reduce sediment loads, and provide wildlife corridors throughout the Project area. Reach JN2-C - Enhancement activities included improving habitat through supplemental buffer plantings and livestock exclusion fencing. Minimal bank grading and buffer re-establishment were Little Sebastian Site4 Year 2 Monitoring Report Surry County, NCJanuary2023 done along the downstream end. The restoration of the riparian areas at the downstream end filters runoff from adjacent pasture, reduce sediment loads, and provide wildlife corridors throughout the Project area. Reach JN2-D - Enhancement activities included some channel relocation, bed, and bank stabilization, removing an existing ford crossing and access road, improving habitat through supplemental buffer plantings, and livestock exclusion fencing. The restoration of the riparian areas at the downstream end filters runoff from adjacent pasture, reduce sediment loads, and provide wildlife corridors throughout the Project area. Reach JN3-A –Enhancement II activities at a 7.5:1 ratio included improving habitat through supplemental buffer plantings and livestock exclusion fencing. The widening and restoration of the riparian areas along the right bank filters runoff from adjacent pasture and reduce sediment loads. Reach JN3-B - Restoration activities included constructing a new channel within the natural valley to the north with appropriate dimensions and pattern and backfilling the abandoned channel. In- stream structures such as log sills, brush toes, and log vanes were installed for stability and to improve habitat. Habitat was further improved through buffer plantings and livestock exclusion. Buffer activities improved riparian areas that filter runoff from adjacent pastures, thereby reducing nutrient and sediment loads to the channel. Also, the reach was built through two small jurisdictional wetlands that are currently on the right bank floodplain and degraded from cattle access and pasture-use. While this project is not claiming any wetland credit, the raised channel bed enhances the wetlands’ hydrology by reconnecting the floodplain wetlands to the stream. Two groundwater wells were installed on the right floodplain to monitor the wetland hydrology and will be reported in the yearly monitoring reports. Reach MC1-A - Enhancement activities included improving habitat through supplemental buffer plantings and livestock exclusion fencing. The widening and restoration of the riparian areas along the right bank filters runoff from adjacent pasture and reduce sediment loads. Reach MC1-B - Enhancement activities included improving habitat through supplemental buffer plantings and livestock exclusion fencing. The widening and restoration of the riparian areas along the left bank filters runoff from adjacent pasture, reduce sediment loads, and provide wildlife corridors throughout the Project area. Reach MC1-C - Restoration activities included using log structures to provide vertical stability, assist in maintaining riffle, run and pool features and to provide habitat features. Cut and fill was balanced in an effort to raise the channel bed to provide regular inundation of the adjacent floodplain. Habitat was improved through supplemental buffer plantings and livestock exclusion fencing. The Gideon Mitigation Bank was constructed with the Project. Reach MC3-A - Enhancement activities included improving habitat through supplemental buffer plantings and livestock exclusion fencing. The widening and restoration of the riparian areas along the right bank filters runoff from adjacent pasture and reduce sediment loads. Little Sebastian Site5 Year 2 Monitoring Report Surry County, NCJanuary2023 Reach MC3-B - Enhancement activities included reshaping the left bank, install coir matting and livestakes, and improving habitat through supplemental buffer plantings and livestock exclusion fencing. The widening and restoration of the riparian areas along the left bank filters runoff from adjacent pasture, reduce sediment loads, and provide wildlife corridors throughout the Project area. A ford crossing was installed on this reach. Reach MC3-C - Enhancement activities included reshaping the left bank, install coir matting and livestakes, and improving habitat through supplemental buffer plantings and livestock exclusion fencing. The widening and restoration of the riparian areas along the left bank filters runoff from adjacent pasture, reduce sediment loads, and provide wildlife corridors throughout the project area. Reach MC3-D - Enhancement activities includes improving habitat through supplemental buffer plantings and livestock exclusion fencing. The widening and restoration of the riparian areas along the left bank filters runoff from adjacent pasture, reduce sediment loads, and provide wildlife corridors throughout the Project area. Reach BS1-A - Restoration activities included using log and rock structures to provide vertical stability, assist in maintaining riffle, run and pool features and to provide habitat features. Cut and fill were balanced in an effort to raise the channel bed to provide small floodplain benches where topography allows. Habitat was further improved through supplemental buffer plantings and livestock exclusion fencing. An engineered sediment pack was installed at the top of this reach. Reach BS1-B - Enhancement activities included improving habitat through supplemental buffer plantings and livestock exclusion fencing. The widening and restoration of the riparian areas along the left bank filters runoff from adjacent pasture, reduce sediment loads, and provide wildlife corridors throughout the project area. Reach BS1-C - Restoration activities included using log and rock structures to provide vertical stability, assist in maintaining riffle, run and pool features and to provide habitat features. Cut and fill was balanced in an effort to raise the channel bed to provide small floodplain benches where topography allows. Habitat was further improved through supplemental buffer plantings and livestock exclusion fencing. Reach BS1-D - Enhancement activities included improving habitat through supplemental buffer plantings and livestock exclusion fencing. The widening and restoration of the riparian areas along the left bank filters runoff from adjacent pasture, reduce sediment loads, and provide wildlife corridors throughout the Project area. Reach BS1-E - Restoration activities included using log structures to provide vertical stability, assist in maintaining riffle, run and pool features and to provide habitat features. Cut and fill were balanced in an effort to raise the channel bed to provide small floodplain benches where topography allows. Habitat was further improved through supplemental buffer plantings and livestock exclusion fencing. Little Sebastian Site6 Year 2 Monitoring Report Surry County, NCJanuary2023 1.6Construction and As-Built Conditions Stream construction was completed in February 2021 and planting was completed in March 2021. Additionally, five-strand high tensile electric fencing was installed for cattle exclusion. The Little Sebastian Site was built to design plans and guidelines. Two minor changes were made during construction: a log sill was added on JN2-B for extra grade control and log sills were removed from BS1 due to bedrock. Additionally, JN7 was added between Final Mitigation Plan approval and construction. This reach has a 30-acre drainage area and includes a pond located about 150 linear feet upstream of the easement area. Historically, this pond drained through a short ditch into JN3-B but due to the relocation of JN3-B, a channel was constructed in order to connect the pond back to JN3-B. The restored JN7 includes 37 linear feet within the easement. A photo of JN7 is in Appendix B. RES proposed the addition of JN7 for credit; however, this request was denied by IRT. A flow gauge was installed along JN7 in February 2022. RES will monitor the stability and hydrology of this reach and if back-up credits are needed at closeout there is the potential to use the 19.660 SMUs from JN7. 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. Minor monitoring device location changes were made during as-built installation due to site conditions. The only monitoring devices not installed were the stage recorders proposed for MC1- C and BS1-C due to the reach being less than 1,000 linear feet and there being two stage recorders proposed for the same reach, respectively. 1.7Monitoring Performance (MY2) The Little Sebastian Year 2 monitoring activities were performed in July and November 2022. All Year 2 monitoring data is present below and in the appendices. The Project is on track to meeting vegetation and stream interim success criteria. Two areas of fencing inside the easement, adjacent to reach MC1, were relocated to the easement boundaries in May 2022. An additional area of fencing was relocated at the downstream side of fence at the crossing between MC1-A and MC1-B. Horse tape was strung along the upstream side of the crossing to reinforce the easement boundaries and prevent any driving through the far southwestern portion of the easement. All project fencing is now located outside of or on the conservation easement line. Approximate fence and horse tape locations can be found in Figure 2, Appendix B. Vegetation Monitoring of six fixed vegetation plots and three random vegetation plots was completed on November 2, 2022. Vegetation data can be found in Appendix C, associated photos are in Appendix B, and plot locations are in Appendix B. MY2 data indicates that all plots are exceeding the interim success criteria of 320 planted stems per acre. Planted stem densities ranged from 526 Little Sebastian Site7 Year 2 Monitoring Report Surry County, NCJanuary2023 to 1,133 planted stems per acre with a mean of 823 planted stems per acre across all plots. A total of 10 species were documented within the plots. Volunteer species were not noted in any of the plots but are expected to establish in upcoming years. The average stem height in the plots was 3.0 feet. Visual assessment of vegetation outside of the monitoring plots indicates that the herbaceous vegetation is becoming well established throughout the project. A few small areas of Chinese privet were treated in December 2021. No additional invasive species were observed during MY2. Two areas of mowing encroachment along the eastern boundary of the Project, adjacent to BS1, were observed during Year 2 monitoring. The mowing has resulted in two areas of low stem density; one is 0.49 acres and the other is 0.34 acres. This roughly 0.83-acre area will be replanted with native container trees, chosen in reference to the original planting list (Appendix C) and based on supply availability, during this dormant season. Additional signage and horse tape (in areas where visibility between markers may be limited) will be installed along this side of the easement to mark a clear boundary to prevent further mowing. If further encroachment is observed in the future, a formal letter will be sent to the landowner. All areas of proposed supplemental planting (as a result of the encroachment) can be seen in Figure 2 as red simple hatch and are referenced in Table 6, Appendix B. The entire project boundary was walked, and no other problem areas were noted along the remainder of the easement boundary. Stream Geomorphology Cross section and geomorphology data collection for MY2 was collected on July 12, 2022. Summary tables and cross section plots are in Appendix D. Overall the MY2 cross sections and profile relatively match the proposed design. The current conditions show that shear stress and velocities have been reduced for all restoration/enhancement reaches. The reaches were designed as gravel/cobble bed channels and remain classified as gravel/cobble bed channels post- construction. Four cross sections displayed notable changes for Bankfull Bank Height Ratio between MY1 and MY2 and are discussed below. Cross Section 1- because this is an Enhancement I section with steeper, uneven slopes, choosing the same location to call top of bank, year to year, is difficult; therefore, minor changes are expected in bank height ratios. Additionally, because the morphology tables are set to round numbers to one decimal place, the change from MY1 to MY2 may look more drastic than it is. MY1, cross section 1 had a bank height ratio of 1.380952381; MY2 cross section 1 had a bank height ratio of 1.467336683 (only 6% change). This is less than a 10% difference. Cross Section 2- because this is an Enhancement I section with steeper, uneven slopes, choosing the same location to call top of bank, year to year, is difficult; therefore, minor changes are expected in bank height ratios. The left top of bank was called at 1211.91ft in the field, but upon desktop review, it is more likely that the top of bank is at 1211.66ft, as the low top of bank. This changes the bank height ratio to 1.577205882. This is a 4% change from the MY1 bank height ratio of 1.516791045. Little Sebastian Site8Year 2 Monitoring Report Surry County, NCJanuary2023 Cross Section 3- because this is an Enhancement II section with steeper slopes, choosing the same location to call top of bank, year to year, is difficult; therefore, minor changes are expected in bank height ratios. The right top of bank was called at 1170.983ft in the field, but upon desktop review, it is more likely that the top of bank is at 1170.703ft, as the low top of bank. This changes the bank height ratio to 1.054081633. This is a 6% change from the MY1 bank height ratio of 1.127348643. Cross Section 11 – this cross section is in a portion of the project that displays uneven slopes along both banks, and in this case, a very steep left bank; therefore, calling the same top of bank, year to year, is difficult. Minor changes are expected to occur, especially as the stream settles in the early stages of the project as this is a Restoration reach. The left top of bank was called at 1136.665ft in the field, but upon desktop review, it is more likely that the top of bank is at 1136.429ft, as the low top of bank. This changes the bank height ratio to 0.915041783. This is a 14% change from MY1 bank height ratio of 1.07194244604311; however, because this section has such uneven, sloped banks, the top of bank could have been miscalled in MY1. MY2 more closely resembles as-built (MY0) conditions/numbers, which displayed a low bank height ratio of 1; this is only an 8% change between MY0 and MY2. This cross section and reach will continue to be monitored for changes that may impact the condition of the stream as a whole. Visual assessment of the stream channel was performed to document signs of instability, such as eroding banks, structural instability, or excessive sedimentation (Table 5, Appendix B). The channel is transporting sediment as designed and will continue to be monitored for aggradation and degradation. Stream Hydrology Two stage recorders and two flow gauges 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 JN3-B documented one bankfull event on July 9, 2022, measuring 0.02 feet above the top of bank. The stage recorder along BS1-E has yet to record any events; however, the highest recorded event was one inch away from receiving a bankfull event in July 2022. RES expects to see in increase in bankfull events in future monitoring years. Photo documentation of overbank events will be included in MY3 reports. The flow gauge on JN2- B recorded five flow events, with the longest lasting 119 consecutive days. The gauge on BS1-A recorded one flow event lasting 305 consecutive days. And the flow gauge on JN7, installed in February 2022, recorded one flow event, lasting 273 consecutive 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 Two 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 Little Sebastian Site9 Year 2 Monitoring Report Surry County, NCJanuary2023 on site post-stream construction. There is no hydroperiod success criteria for these groundwater wells. In MY2, GW1 recorded a consecutive hydroperiod of 15 percent of the growing season and GW2 recorded a consecutive hydroperiod of 100 percent of the growing season. Wetland hydrology data is included in Appendix E. Groundwater well locations can be found on Figure 2. 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 12 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 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. The flow gauges also include an automatic pressure transducer placed in a PVC casing in a pool. The elevations of the bed, water surface, and immediate downstream riffle are used to determine stream flow. Vegetation success is being monitored at six fixed monitoring plots and three random 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. The random plot is to be collected in locations where there are no permanent vegetation plots. Random plot 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 track the hydrology of the jurisdictional wetlands on site post- stream construction. This is accomplished with two 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. Fixed digital image locations are established at each cross section, vegetation plot, stage recorder, flow gauge, and the upstream and downstream side of each crossing. Little Sebastian Site10Year 2 Monitoring Report Surry County, NCJanuary2023 3.0 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 (2018). Little Sebastian 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). Little Sebastian Site11Year 2 Monitoring Report Surry County, NCJanuary2023 Comments Livestock exclusionBuffer planting and livestock exclusionBuffer planting and livestock exclusion; 31-foot crossingBuffer planting and livestock exclusionChannel relocation, bed and bank stabilization, crossing relocation, buffer plantings, and livestock exclusion; 62-foot crossingChannel relocation, bed and bank stabilization, crossing relocation, buffer plantings, and livestock exclusionBuffer planting and livestock exclusionChannel relocation in the natural valley, improved stream structures, buffer planting, and livestock exclusion; 43-foot crossingChannel relocation, bed and bank stabilization, crossing relocation, buffer plantings, and livestock exclusionChannel construction, bed and bank stabilization, buffer plantings, and livestock exclusion; No CreditBuffer planting and livestock exclusionBuffer planting and livestock exclusion; 41-foot utility line crossingBuffer planting and livestock exclusionChannel bed raised, improved stream structures, buffer planting, and livestock exclusionBuffer planting and livestock exclusionBuffer planting and livestock exclusion; 41-foot crossingBank stabilization, improved stream structures, buffer planting, and livestock exclusionBuffer planting and livestock exclusionChannel bed raised, improved stream structures, buffer planting, and livestock exclusionBuffer planting and livestock exclusionChannel bed raised, improved stream structures, buffer planting, and livestock exclusionBuffer planting and livestock exclusionChannel bed raised, improved stream structures, buffer planting, and livestock exclusion; 45-foot crossingChannel bed raised, improved stream structures, buffer planting, and livestock exclusion 433794 418187307837153350781262469717260555243402214395214175541177274 As-Built Acreage Footage or 0.000 41.80028.66746.66762.53352.00024.30079.00070.00070.80094.000 124.667122.800334.800102.000781.000262.000143.400555.000160.800142.667214.000541.000274.000 Mitigation Plan Credits Marsh 1.500002.500002.500001.500001.500007.500001.000001.000001.000007.500005.000005.000001.000002.500001.500005.000001.000002.500001.000002.500001.000001.00000Coastal 10.0000010.00000 Mitigation Ratio (X:1) IIIIIIII NANANANANANANANANANANANANANANANA Non-rip Wetland Priority Level PRRRRRRRR EIEIEIEI EIIEIIEIIEIIEIIEIIEIIEIIEIIEIIEII Level Wetland Riparian Restoration CoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCoolCold Category Migitation 0 4394 418187307837153350781262469717260555243402214395214175541177274 StreamCool Plan 41.800 226.400 398.000 Acreage 2721.0001167.100 Mitigation Footage or 4,554.300 Table 1. Little Sebastian (ID-100027) - Mitigation Assets and Components 0 3994 418187307837150350900224469717260545243402214395205190580185278 Warm Existing Acreage Footage or TOTALS JN7* JN2-AJN2-BJN3-AJN3-BJN3-B JN2-CJN2-CJN2-DJN2-DBS1-ABS1-BBS1-EBS1-E BS1-CBS1-D MC1-AMC1-BMC1-BMC3-AMC3-B MC1-CMC3-CMC3-D Project Segment Restoration Level Project Credits *Added between Final Mitigation Plan and Construction; no credit but potential to add credits if reach meets success criteria and back-up credits are neededNote: all crossings and utility easements have been removed from credit calculations. RestorationRe-establishmentRehabilitationEnhancementEnhancement IEnhancement IICreationPreservationNSBW Table 2. Project Activity and Reporting History Little Sebastian Elapsed Time Since grading complete:1 yr, 9 mo Elapsed Time Since planting complete:1 yr, 8 mo 1 Number of reporting Years: 2 Data Collection Completion or Activity or DeliverableCompleteDelivery Mitigation PlanNANov-18 Final Design – Construction PlansNASep-20 Stream ConstructionNAFeb-21 Site PlantingNAMar-21 As-built (Year 0 Monitoring – VP, XS, Hydro, Visual)Mar-21Oct-21 Stream: Nov-21 Year 1 MonitoringDec-21 Vegetation: Nov-21 NA Invasive TreatmentDec-21 NA Fence RelocationMay-22 Stream: July-22 Year 2 MonitoringNov-22 Vegetation: Nov-22 Year 3 Monitoring 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 Little Sebastian RES / 3600 Glenwood Ave., Suite 100, Raleigh, NC 27612 Designer Primary project design POCFrasier Mullen, PE KBS Earthwork Inc. / 5616 Coble Church Rd., Julian, NC Construction Contractor 27283 Construction contractor POCKory Strader Acension Land Surveying, PC / 116 Williams Road, Mocksville, Survey Contractor NC 27028 Survey contractor POCChris Cole, PLS Shenandoah Habitats Planting Contractor Planting contractor POCDavid Coleman RES / 3600 Glenwood Ave, Suite 100, Raleigh, NC 27612 Monitoring Performers Project Manager POCRyan Medric (703) 424-6313 Monitoring POCEmily Ulman (910) 274-8231 Table 4. Project Background Information Project Name Little Sebastian County Surry Project Area (acres) 25.91 Project Coordinates (latitude and longitude) 36.40, -80.86 Planted Acreage (Acres of Woody Stems Planted) 10.7 Project Watershed Summary Information Physiographic Province 45e - Northern Inner Piedmont River Basin Yadkin USGS Hydrologic Unit 14-digit USGS Hydrologic Unit 8-digit 03040101080020 03040101 DWR Sub-basin 03-04-01 Project Drainage Area (Acres and Square Miles) 3,261 acres (5.1 sq mi) Project Drainage Area Percentage of Impervious Area <1% Reach Summary Information Parameters JN2-AJN2-BJN2-CJN2-DJN3-A Length of reach (linear feet) 4181871114189350 Valley confinement (Confined, moderately confined, unconfined) UCMC MCMCUC Drainage area (Acres) 1017 3738956 Perennial, Intermittent, Ephemeral IPPPP Parameters JN3-BMC1-AMC1-BMC1-CMC3-A/B/C Length of reach (linear feet) 1043469977555859 Valley confinement (Confined, moderately confined, unconfined) CUC UCUCUC Drainage area (Acres) 9991862 191529213225 Perennial, Intermittent, Ephemeral PPPPP Parameters MC3-DBS1-A/C/EBS1-B/DJN7 Length of reach (linear feet) 395102935237 Valley confinement (Confined, moderately confined, unconfined) UCC CUC Drainage area (Acres) 326212-29 14-2830 Perennial, Intermittent, Ephemeral PI/PPI Little Sebastian Little Sebastian Mitigation Site Mitigation Site Gideon Mitigation Site Little Sebastian Mitigation Site Legend Easement Proposed Gideon Site Service Area - 03040101 TLW - 03040101080020 Date: 10/30/2018 Figure 1 - Map Drawn by: MDE © Little Sebastian Mitigation Site Checked by: ATP 05001,000 Surry County, North Carolina Feet Y Y Y Y Y Jowbtjwf!Tqfdjft Document Path: R:\\Resgis\\entgis\\Projects\\100908_Little_Sebastian\\MXD\\6_MonitoringMaintenance\\MY2\\Little Sebastian CCPV MY2 2022.mxd Jowbtjwf!Tqfdjft Document Path: R:\\Resgis\\entgis\\Projects\\100908_Little_Sebastian\\MXD\\6_MonitoringMaintenance\\MY2\\Little Sebastian CCPV MY2 2022.mxd 100% Intended % Stable, Performing as 00100%0100% Footage Unstable Amount of in As-built Total Number 1010100%1818100% Stable, Number Intended Performing as Totals include undercuts that are modest, appear sustainable and are JN310432086Bank lacking vegetative cover resulting simply from poor growth and/or surface scour Bank toe eroding to the extent that bank failure appears likely. Does NOTproviding habitat.Fluvial and geotechnical - rotational, slumping, calving, or collapse0100%Grade control structures exhibiting maintenance of grade across the sill.Bank erosion within the structures extent of influence does not exceed 15%. (See guidance for this table in DMS monitoring guidance document) Surface Scour/Bare BankToe ErosionBank FailureBank Protection Major Channel CategoryMetric Visual Stream Stability AssessmentAssessment Date: 11/2/2022 ReachAssessed Stream Length Assessed Bank LengthBankStructureGrade Control 100% Intended % Stable, Performing as 00100%0100% Footage Unstable Amount of in As-built Total Number 22100%77100% Stable, Number Intended Performing as Totals include undercuts that are modest, appear sustainable and are MC1-C5551110Bank lacking vegetative cover resulting simply from poor growth and/or surface scour Bank toe eroding to the extent that bank failure appears likely. Does NOTproviding habitat.Fluvial and geotechnical - rotational, slumping, calving, or collapse0100%Grade control structures exhibiting maintenance of grade across the sill.Bank erosion within the structures extent of influence does not exceed 15%. (See guidance for this table in DMS monitoring guidance document) Surface Scour/Bare BankToe ErosionBank FailureBank Protection Major Channel CategoryMetric Visual Stream Stability AssessmentAssessment Date: 11/2/2022 ReachAssessed Stream Length Assessed Bank LengthBankStructureGrade Control 100% Intended % Stable, Performing as 00100%0100% Footage Unstable Amount of in As-built Total Number 88100%33100% Stable, Number Intended Performing as Totals include undercuts that are modest, appear sustainable and are BS111232246Bank lacking vegetative cover resulting simply from poor growth and/or surface scour Bank toe eroding to the extent that bank failure appears likely. Does NOTproviding habitat.Fluvial and geotechnical - rotational, slumping, calving, or collapse0100%Grade control structures exhibiting maintenance of grade across the sill.Bank erosion within the structures extent of influence does not exceed 15%. (See guidance for this table in DMS monitoring guidance document) Surface Scour/Bare BankToe ErosionBank FailureBank Protection Major Channel CategoryMetric Visual Stream Stability AssessmentAssessment Date: 11/2/2022 ReachAssessed Stream Length Assessed Bank LengthBankStructureGrade Control 100% Intended % Stable, Performing as 00100%0100% Footage Unstable Amount of in As-built Total Number 99100%22100% Stable, Number Intended Performing as Totals include undercuts that are modest, appear sustainable and are JN2383766Bank lacking vegetative cover resulting simply from poor growth and/or surface scour Bank toe eroding to the extent that bank failure appears likely. Does NOTproviding habitat.Fluvial and geotechnical - rotational, slumping, calving, or collapse0100%Grade control structures exhibiting maintenance of grade across the sill.Bank erosion within the structures extent of influence does not exceed 15%. (See guidance for this table in DMS monitoring guidance document) Surface Scour/Bare BankToe ErosionBank FailureBank Protection Major Channel CategoryMetric Visual Stream Stability AssessmentAssessment Date: 11/2/2022 ReachAssessed Stream Length Assessed Bank LengthBankStructureGrade Control 100% Intended % Stable, Performing as 00100%0100% Footage Unstable Amount of in As-built Total Number 00NA00NA Stable, Number Intended Performing as Totals include undercuts that are modest, appear sustainable and are MC3214428Bank lacking vegetative cover resulting simply from poor growth and/or surface scour Bank toe eroding to the extent that bank failure appears likely. Does NOTproviding habitat.Fluvial and geotechnical - rotational, slumping, calving, or collapse0100%Grade control structures exhibiting maintenance of grade across the sill.Bank erosion within the structures extent of influence does not exceed 15%. (See guidance for this table in DMS monitoring guidance document) Surface Scour/Bare BankToe ErosionBank FailureBank Protection Major Channel CategoryMetric Visual Stream Stability AssessmentAssessment Date: 11/2/2022 ReachAssessed Stream Length Assessed Bank LengthBankStructureGrade Control % of 1/1&4/3& AcreageAcreage Easement % of Planted 1/111/94 1/948/9&1/948/9& AcreageAcreage CombinedCombined 3 11/111/1&31/948/9&11/111/1&1 Polygons Polygons Number of Number of Total bsfpgqbsujdvmbsjoufsftuhjwfouifjsfyusfnfsjtl0uisfbumfwfm Ibudi Ibudi Zfmmpx CCPVCCPV PsbohfPsbohf Dspttibudi DepictionDepiction Sfe!Tjnqmf! Sfe!Tjnqmf! Tjnqmf!IbudiTjnqmf!Ibudi reditalics Cumulative Total opof 2111!TG MappingMapping ThresholdThreshold vckfduuptvqqmfnfoubmqmboujohpguifvoefstupsz-uifdiboofmbdsfbhf-dspttjohtps ifobssbujwftfdujpopguiffyfdvujwftvnnbsz/ sfrvfodz/Uiptfjo ojuztusvduvsfgpsfyjtujoh-npsfftubcmjtifeusff0tisvctuboetpwfsujnfgsbnftuibubsftmjhiumz mbzfstxjuijouifujnfgsbnftejtdvttfeboeuifqpufoujbmjnqbdutpgusfbujohfyufotjwfbnpvoutpg Vegetation Condition Assessment 10.7 Wfsz!mjnjufe!dpwfs!pg!cpui!xppez!boe!ifscbdfpvt!nbufsjbm/1/2!bdsftXppez!tufn!efotjujft!dmfbsmz!cfmpx!ubshfu!mfwfmt!cbtfe!po!NZ4-!5-!ps!6!tufn!dpvou!dsjufsjb/1/2!bdsftBsfbt!xjui!xppez!tufnt!pg!b! tj{f!dmbtt!uibu!bsf!pcwjpvtmz!tnbmm!hjwfo!uif!npojupsjoh!zfbs/1/36!bdsft 25.91 Bsfbt!ps!qpjout!)jg!upp!tnbmm!up!sfoefs!bt!qpmzhpot!bu!nbq!tdbmf*/Bsfbt!ps!qpjout!)jg!upp!tnbmm!up!sfoefs!bt!qpmzhpot!bu !nbq!tdbmf*/ 3 mmjfejouifsfmfwboujufn)j/f/-jufn2-3ps4*btxfmmbtbqbsbmmfmubmmzjojufn6/ 4 2 1 >Uifbdsfbhfxjuijouiffbtfnfoucpvoebsjft/ >Foufsuifqmboufebdsfbhfxjuijouiffbtfnfou/Uijtovncfsjtdbmdvmbufebtuiffbtfnfoubdsfbhfnjovtbozfyjtujohnbuvsfusfftuboetuibuxfsfoput>Fodspbdinfounbzpddvsxjuijopspvutjefpgqmboufebsfbtboexjmmuifsfgpsfcfdbmd vmbufebhbjotuuifpwfsbmmfbtfnfoubdsfbhf/Jouiffwfoubqpmzhpojtdbubmphfejoupjufnt2-3ps4jouifubcmfboejtuifsftvmupgfodspbdinfou-uif >Jowbtjwftnbzpddvsjopspvupgqmboufebsfbt-cvutujmmxjuijouiffbtfnfouboexjmmuifsfgpsfcfdbmdvmbufebhbjotuuifpwfsbmmfbtfnfoubdsfbhf/Jowbtjwftpgdpodfso0joufsftubsfmjtufecfmpx/Uifmjtupgijhidpodfsotqdjftbsfui ptfxjui 2bozpuifsfmfnfoutopuejsfdumzqmboufebtqbsupguifqspkfdufggpsu/34bttpdjbufebdsfbhftipvmecfub5uifqpufoujbmupejsfdumzpvudpnqfufobujwf-zpvoh-xppeztufntjouiftipsu.ufsn)f/h/npojupsjohqfsjpepstipsumzuifsfbguf s*psbggfduuifdpnnvmpohfs)f/h/2.3efdbeft*/Uifmpx0npefsbufdpodfsohspvqbsfuiptftqfdjftuibuhfofsbmmzepopuibwfuijtdbqbdjuzpwfsuifujnfgsbnftejtdvttfeboeuifsfgpsfbsfopufyqfdufeupcfnbqqfexjuisfhvmbsjuz-cvudb ocfnbqqfe-jgjouifkvehfnfoupguifpctfswfsuifjsdpwfsbhf-efotjuzpsejtusjcvujpojttvqqsfttjohuifwjbcjmjuz-efotjuz-pshspxuipgqmboufexppeztufnt/Efdjtjpotbtupxifuifssfnfejbujpoxjmmcfoffefebsfcbtfepouifjoufhsb ujpopgsjtlgbdupstczFFQtvdibttqfdjftqsftfou-uifjsdpwfsbhf-ejtusjcvujposfmbujwfupobujwfcjpnbtt-boeuifqsbdujdbmjuzpgusfbunfou/Gpsfybnqmf-fwfonpeftubnpvoutpgLve{vpsKbqboftfLopuxffefbsmzjouifqspkfdutijtup szxjmmxbssboudpouspm-cvuqpufoujbmmzmbshfdpwfsbhftpgNjdsptufhjvnjouififscmbzfsxjmmopumjlmfzusjhhfsdpouspmcfdbvtfpguifmjnjufedbqbdjujftupjnqbduusff0tisvchspvoedpwfs/Uiptftqfdjftxjuiuif#xbudimjtu#eftjho bupsjohsbztibefbsfpgjoufsftubtxfmm-cvuibwfzfuupcfpctfswfebdspttuiftubufxjuibozggpsnbqqjohbtqpjoutxifsfjtpmbufetqfdjnfotbsfgpvoe-qbsujdvmbsmzfbmszjobqspkfdutnpojupsjohijtupsz/Ipxfwfs-bsfbtpgejtdsffu-e fotfqbudiftxjmmpgdpvstfcfnbqqfebtqpmzhpot/Uiftzncpmphztdifnfcfmpxxbtpofuibuxbtgpvoeupcfifmqgvmgpstzncpm{johjowbtjwftqpmzhpot-qbsujdvmbmszgpstjuvbujpotxifsfuifdpoejupogpsbobsfbjttpnfxifsfcfuxffojtpmbu fetqfdjnfotboeefotf-ejtdsffuqbudift/Jobozdbtf-uifqpjoupsqpmzhpo0bsfbgfbuvsfdbocftzncpmj{feupeftdsjcfuijohtmjlfijhipsmpxdpodfsoboetqfdjftdbocfmjtufebtbnbqjotfu-jomfhfoejufntjguifovncfspgtqfdjftbsfmjnj ufepsjou Table 6 Assessment Date: 11/2/2022 Planted Acreage Vegetation CategoryDefinitions1. Bare Areas2. Low Stem Density Areas3. Areas of Poor Growth Rates or Vigor Easement Acreage Vegetation CategoryDefinitions 4. Invasive Areas of Concern 5. Easement Encroachment Areas Wfhfubujpo!Qmpu!3!)220303133*Wfhfubujpo!Qmpu!5!)220303133*! 3!Wfhfubujpo!Npojupsjoh!Qmpu!Qipupt! Wfhfubujpo!Qmpu!2!)220303133*!Wfhfubujpo!Qmpu!4!)220303133*! NZ Mjuumf!Tfcbtujbo 3* 0313 Wfhfubujpo!Qmpu!7!)2202803132*! !Sboepn!Wfhfubujpo!Qmpu!3!)2203 3*! 0313 Wfhfubujpo!Qmpu!6!)220303133*! Sboepn!Wfhfubujpo!Qmpu!2!)2203 )npxjoh0fodspbdinfou*! Cbsf!bsfb!bmpoh!fbtufso!tjef!pg!CT2! 3*! 0313 Sboepn!Wfhfubujpo!Qmpu!4!)2203 Hspvoexbufs!Xfmm!2 C . Hspvoexbufs!Xfmm!3 Tubhf!Sfdpsefs!KO4 Opw!3132 — D!)epxotusfbn* . KO3 E!)epxotusfbn* . KO3 Opw!3132 . !.!Kvmz!23ui-!3133! D!)vqtusfbn* . KO3 E!)vqtusfbn* . KO3 Mjuumf!Tfcbtujbo!Dspttjoh!Qipupt tusfbn* o )epx ND4.C0D! C . 4 KO tusfbn* )vqtusfbn* epxo C . 4 KO ND2.D!) F!)epxotusfbn* . CT2 F!)vqtusfbn* . CT2 !Bqqfoejy!D/!Wfhfubujpo!QmpuEbub Ubcmf!8/!Qmboufe!Tqfdjft!Tvnnbsz Dpnnpo!ObnfTdjfoujgjd!ObnfNju!Qmbo!&Bt.Cvjmu!&Upubm!Tufnt!Qmboufe Xjmmpx!Pbl Quercus phellos 26262-711 Sjwfs!Cjsdi Betula nigra 26262-711 Tzdbnpsf Platanus occidentalis 21262-711 Xbufs!Pbl Quercus nigra 26252-711 Opsuifso!Sfe!Pbl Quercus rubra 21222-311 Zfmmpx!Qpqmbs Liriodendron tulipifera 21212-211 Hsffo!Bti Fraxinus pennsylvanica 216711 Qfstjnnpo Diospyros virginiana 66711 Cvuupocvti Cephalanthus occidentalis 16711 Tvhbscfssz Celtis laevigata 16711 Fmefscfssz Sambucus canadensis 611 Ozttb!tzmwbujdb Blackgum 611 Upubm 22-211 Qmboufe!Bsfb21/8 Bt.cvjmu!Qmboufe!Tufnt0Bdsf2-148 Ubcmf!9/!Wfhfubujpo!Qmpu!Njujhbujpo!Tvddftt!Tvnnbsz Averaged Success Planted Volunteer Total Planted Plot #Criteria Stems/AcreStems/AcreStems/AcreStem Met? Height (ft) 1 7690769Yes2.7 2 101201012Yes2.9 3 109301093Yes3.9 4 113301133Yes1.9 5 7690769Yes3.8 6 6070607Yes2.2 R1 6470647Yes2.5 R2 8500850Yes4.3 R3 5260526Yes1.9 Project Avg8230823Yes3.0 Cross Section 5 (Riffle) Cross Section 10 (Riffle) 3.23.13.01.01.01.06.37.17.71.11.01.14.03.44.23.83.33.01.00.91.0 21.321.021.349.848.247.223.823.523.3 >3.0>3.1>3.1 >64.9>65.1>65 1150.61150.61150.71187.61187.51187.6 1150.61150.71150.81187.61187.61187.6 Cross Section 9 (Pool) Cross Section 4 (Riffle) --------------- 9.08.88.50.90.80.83.52.62.41.00.90.91.00.91.13.63.03.7 >4.9>4.9>5.2 >43.9>43.2>43.9 1165.01164.91165.01165.01164.81164.91188.31188.41188.4 #100027 Cross Section 8 (Pool) Cross Section 3 (Riffle) --------------- 5.35.85.61.01.11.03.54.33.81.01.11.13.64.24.3 34.834.032.5 >6.6>5.9>5.9 >34.8>34.1>33.5 1170.71170.71170.71170.71170.81170.71157.21157.21157.3 Project Name/Number: Little Sebastian Cross Section 12 (Pool) Cross Section 2 (Riffle)Cross Section 7 (Riffle) --------------- 5.45.65.78.78.89.40.50.80.92.34.14.31.61.61.71.01.51.62.22.42.51.01.01.01.20.91.04.64.13.5 15.015.014.922.824.423.5 >4.3>4.3>4.3 >64.4>64.7>64.3 1211.21211.31211.41211.21211.61211.71157.41157.31157.41157.41157.41157.41136.11136.21136.3 Appendix D. Table 11 - Monitoring Data - Dimensional Morphology Summary (Dimensional Parameters – Cross Sections) Cross Section 6 (Pool) Cross Section 1 (Riffle) Cross Section 11 (Riffle) ------------ 5.45.15.50.71.01.22.44.14.92.42.22.11.01.41.54.14.14.05.76.56.50.70.70.72.63.02.32.01.71.81.01.10.9 13.111.211.556.756.454.211.311.311.9 BaseMY1MY2MY3MY5MY7MY+BaseMY1MY2MY3MY5MY7MY+BaseMY1MY2MY3MY5MY7MY+BaseMY1MY2MY3MY5MY7MY+BaseMY1MY2MY3MY5MY7MY+BaseMY1MY2MY3MY5MY7MY+BaseMY1MY2MY3MY5MY7MY+BaseMY1MY2MY3MY5MY7MY+BaseMY1MY2MY3MY5MY7MY+B aseMY1MY2MY3MY5MY7MY+BaseMY1MY2MY3MY5MY7MY+BaseMY1MY2MY3MY5MY7MY+ 1214.71214.81214.81150.51150.61150.71136.41136.41136.5 111221111122111112211 ))) 222 Bankfull Width (ft)Bankfull Width (ft)Bankfull Width (ft) Floodprone Width (ft)Floodprone Width (ft)Floodprone Width (ft) Low Bank Elevation (ft)1214.741215.01215.2Low Bank Elevation (ft)---Low Bank Elevation (ft)1136.41136.51136.4 Bankfull Max Depth (ft)Bankfull Max Depth (ft)Bankfull Max Depth (ft) Bankfull Bank Height RatioBankfull Bank Height RatioBankfull Bank Height Ratio Bankfull Entrenchment RatioBankfull Entrenchment RatioBankfull Entrenchment Ratio Bankfull Cross Sectional Area (ftBankfull Cross Sectional Area (ftBankfull Cross Sectional Area (ft Bankfull Elevation (ft) - Based on AB-XSABankfull Elevation (ft) - Based on AB-XSABankfull Elevation (ft) - Based on AB-XSA 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation 4Y!Wfsujdbm!Fybhhfsbujpo NZ3!3133Mpx!Cbol!Fmfwbujpo Riffle -Enhancement I Ejtubodf!)gu* -Cross Section 1 - NZ2!3132Gmppeqspof!Bsfb Reach JN2-B Little Sebastian - NZ1!3132Bqqspy/!Cbolgvmm 147:2326293235384144474:535659 232:232923282327232623252324 Fmfwbujpo!)gu* 4Y!Wfsujdbm!Fybhhfsbujpo Mpx!Cbol!Ifjhiu Gmppeqspof!Bsfb Riffle -Enhancement I Bqqspy/!Cbolgvmm Ejtubodf!)gu* -Cross Section 2 - NZ3!3133 Reach JN2-B NZ2!3132 Little Sebastian - NZ1!3132 147:2326293235384144474:535659 2327232623252324232323222321 Fmfwbujpo!)gu* 4Y!Wfsujdbm!Fybhhfsbujpo Mpx!Cbol!Fmfwbujpo Gmppeqspof!Bsfb Riffle -Enhancement II Bqqspy/!Cbolgvmm Ejtubodf!)gu* -Cross Section 3 - NZ3!3133 Reach JN2-C NZ2!3132 Little Sebastian - NZ1!3132 147:2326293235384144474:535659 228622852284228322822281227: Fmfwbujpo!)gu* Mpx!Cbol!Ifjhiu 4Y!Wfsujdbm!Fybhhfsbujpo Gmppeqspof!Bsfb Riffle -Enhancement I Bqqspy/!Cbolgvmm Ejtubodf!)gu* -Cross Section 4 - NZ3!3133 Reach JN2-D NZ2!3132 Little Sebastian - NZ1!3132 147:2326293235384144474:535659 227:227922782277227622752274 Fmfwbujpo!)gu* 4Y!Wfsujdbm!Fybhhfsbujpo NZ3!3133Mpx!Cbol!Fmfwbujpo Riffle -Restoration -Cross Section 5 - Ejtubodf!)gu* NZ2!3132Gmppeqspof!Bsfb Reach MC1-C Little Sebastian- NZ1!3132Bqqspy/!Cbolgvmm 147:2326293235384144474:5356596265687174 226622652264226322622261225:225922582257 Fmfwbujpo!)gu* 4Y!Wfsujdbm!Fybhhfsbujpo Mpx!Cbol!Fmfwbujpo Pool -Restoration Bqqspy/!Cbolgvmm -Cross Section 6 - Ejtubodf!)gu* NZ3!3133 Reach MC1-C NZ2!3132 Little Sebastian - NZ1!3132 147:2326293235384144474:5356596265687174 2264226322622261225:22592258225722562255 Fmfwbujpo!)gu* 4Y!Wfsujdbm!Fybhhfsbujpo NZ3!3133Mpx!Cbol!Fmfwbujpo Riffle -Restoration -Cross Section 7 - Ejtubodf!)gu* NZ2!3132Gmppeqspof!Bsfb Reach JN3-B Little Sebastian - NZ1!3132Bqqspy/!Cbolgvmm 147:2326293235384144474:5356596265687174 227322722271226:226922682267226622652264 Fmfwbujpo!)gu* 4Y!Wfsujdbm!Fybhhfsbujpo Mpx!Cbol!Fmfwbujpo Pool -Restoration Bqqspy/!Cbolgvmm -Cross Section 8 - Ejtubodf!)gu* NZ3!3133 Reach JN3-B NZ2!3132 Little Sebastian - NZ1!3132 147:2326293235384144474:5356596265687174 2271226:22692268226722662265226422632262 Fmfwbujpo!)gu* 4Y!Wfsujdbm!Fybhhfsbujpo Mpx!Cbol!Fmfwbujpo Pool -Restoration Bqqspy/!Cbolgvmm -Cross Section 9 - Ejtubodf!)gu* NZ3!3133 Reach BS1-A NZ2!3132 Little Sebastian - NZ1!3132 147:2326293235384144474:535659 22:422:322:222:1229:22992298 Fmfwbujpo!)gu* 4Y!Wfsujdbm!Fybhhfsbujpo NZ3!3133Mpx!Cbol!Fmfwbujpo Riffle -Restoration -Cross Section 10 - Ejtubodf!)gu* NZ2!3132Gmppeqspof!Bsfb Reach BS1-A Little Sebastian - NZ1!3132Bqqspy/!Cbolgvmm 147:2326293235384144474:535659 22:322:222:1229:229922982297 Fmfwbujpo!)gu* 4Y!Wfsujdbm!Fybhhfsbujpo NZ3!3133Mpx!Cbol!Fmfwbujpo Riffle -Restoration -Cross Section 11 - Ejtubodf!)gu* NZ2!3132Gmppeqspof!Bsfb Reach BS1-E Little Sebastian - NZ1!3132Bqqspy/!Cbolgvmm 147:2326293235384144474:535659 22522251224:2249224822472246 Fmfwbujpo!)gu* 4Y!Wfsujdbm!Fybhhfsbujpo Mpx!Cbol!Fmfwbujpo Pool -Restoration Bqqspy/!Cbolgvmm -Cross Section 12 - Ejtubodf!)gu* NZ3!3133 Reach BS1-E NZ2!3132 Little Sebastian - NZ1!3132 147:2326293235384144474:535659 2251224:22492248224722462245 Fmfwbujpo!)gu* Ubcmf!23/!Sbjogbmm!Tvnnbsz!NZ33133 Opsnbm!Mjnjut Sbwfo!Lopc!Tubujpo! NpouiBwfsbhf Qsfdjqjubujpo 41!Qfsdfou81!Qfsdfou Kbovbsz4/:93/885/853/78 Gfcsvbsz4/413/314/:66/15 Nbsdi5/183/:35/914/93 Bqsjm5/2:3/946/123/42 Nbz!5/6:4/176/616/:2 Kvof5/874/356/7:2/87 Kvmz!6/434/897/4122/31 Bvhvtu5/:84/626/:15/3: Tfqufncfs5/414/226/194/64 Pdupcfs4/683/435/3:3/65 Opwfncfs4/472/::5/194/29 Efdfncfs5/143/915/8:... Upubm61/5545/6471/2457/36 Bcpwf!Opsnbm!MjnjutCfmpx!Opsnbm!MjnjutXjuijo!Opsnbm!Mjnjut Opuf;!Sbwfo!Lopc!DSPOPT!Tubujpo!jt!bqqspyjnbufmz!7!njmft!opsui!pg!uif!tjuf Ubcmf!24/!Epdvnfoubujpo!pg!Hfpnpsqijdbmmz!Tjhojgjdbou!Gmpx!Fwfout Ovncfs!pg!Cbolgvmm!Nbyjnvn!Cbolgvmm! ZfbsEbuf!pg!Nbyjnvn!Cbolgvmm!Fwfou FwfoutIfjhiu!)gu* Tubhf!Sfdpsefs!KO4.C NZ2!31321O0BO0B NZ3!313321/1380:03133 Tubhf!Sfdpsefs!CT2.F NZ2!31321O0BO0B NZ3!31331O0BO0B Nbyjnvn!Dpotfdvujwf!Nbyjnvn!Dvnnmbujwf!Nbyjnvn!Dpotfdvujwf! ZfbsOvncfs!pg!Gmpx!Fwfout Gmpx!EbztGmpx!EbztGmpx!Ebuf!Sbohf Gmpx!Hbvhf!KO3.C NZ2!31322354354402:03132!.!2202803132 NZ3!3133622:26480703133!.!220303133 Gmpx!Hbvhf!CT2.B NZ2!31322354354402:03132!.!2202803132 NZ3!3133241641620203133!.!220303133 Gmpx!Hbvhf!KO8+ NZ3!3133238438430203133!.!220303133 +Gmpx!Hbvhf!po!KO8!xbt!jotubmmfe!po!Gfcsvbsz!2-!3133 Ubcmf!25/!3133!Nby!Izespqfsjpe 3133!Nby!Izespqfsjpe!)Hspxjoh!Tfbtpo!4.Bqs!uispvhi!41.Pdu-!321!ebzt*! DpotfdvujwfDvnvmbujwf Xfmm!JEPddvssfodft Izespqfsjpe!Izespqfsjpe! EbztEbzt )&*)&* HX2 43262788:: HX3 3212113212112 Ubcmf!26/Tvnnbsz!pg!Hspvoexbufs!Npojupsjoh!Sftvmut Tvnnbsz!pg!Hspvoexbufs!Npojupsjoh!Sftvmut Mjuumf!Tfcbtujbo Izespqfsjpe!)&* Xfmm!JE Zfbs!2!Zfbs!3!Zfbs!4!Zfbs!5!Zfbs!6!Zfbs!7!Zfbs!8! )3132*!)3133*)3134*)3135*)3136*)3137*)3138* HX2 5226 HX3 211211 Sbjogbmm!)jo* Xbufs!Efqui!)gu* Sbjogbmm!)jo* Xbufs!Efqui!)gu* Sbjogbmm!)jo* Xbufs!Efqui!)gu* Sbjogbmm!)jo* Xbufs!Efqui!)gu* Sbjogbmm!)jo* Xbufs!Efqui!)gu* Qsfdjqjubujpo!)jodift* 19-Oct-22 19-Sep-22 19-Aug-22 19-Jul-22 19-Jun-22 19-May-22 19-Apr-22 19-Mar-22 19-Feb-22 19-Jan-22 19-Dec-21 19-Nov-21 Hspvoexbufs!Fmfwbujpo!)jodift* Qsfdjqjubujpo!)jodift* 19-Oct-22 19-Sep-22 19-Aug-22 19-Jul-22 19-Jun-22 19-May-22 19-Apr-22 19-Mar-22 19-Feb-22 19-Jan-22 19-Dec-21 19-Nov-21 Hspvoexbufs!Fmfwbujpo!)jodift*