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HomeMy WebLinkAbout20171041 Ver 1_Year 0 Monitoring Report_2021_20211011 Mitigation Project Information Upload ID#* 20171041 Version* 1 Select Reviewer:* Erin Davis Initial Review Completed Date 10/12/2021 Mitigation Project Submittal - 10/11/2021 Is this a Prospectus,Technical Proposal or a New Site?* r Yes r No Type of Mitigation Project:* 17. Stream r Wetlands r Buffer r 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 IDI# Existing Version Project Type: C' DMS r Mitigation Bank Project Name: Little Sebastian Site County: Surry Document Information Mitigation Document Type:* Mitigation Monitoring Report File Upload: Little Sebastian_100027_MY0_2021.pdf 7.76MB Rease upload only one R7Fof the complete file that needs to be submitted... Signature Print Name:* Paul Wiesner Signature:* As-Built Baseline 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 1111.111110, • 44. 144, Asa erg. Provided by: res Resource Environmental Solutions,LLC For Environmental Banc&Exchange,LLC Provided for: NC Department of Environmental Quality Division of Mitigation Services October 2021 3600 Glenwood Avenue,Suite 100 ores Raleigh, NC 27612 Corporate Headquarters 6575 W Loop S#300 Bellaire,TX 77401 Main:713.520.5400 August 26, 2021 Paul Wiesner NC DEQ Division of Mitigation Services 5 Ravenscroft Drive, Suite 102 Asheville, NC 28801 RE: Little Sebastian Mitigation Site: Baseline Report and As-Built Drawings (NCDMS Project I D #100027) Listed below are comments provided by DMS on August 11, 2021 regarding the Little Sebastian Mitigation Site: Baseline Report and As-Built Drawings and RES' responses. Report Cover: Please also include the RFP# and issuance date of the RFP on the report cover: RFP 16-006993 (Issued 9/16/2016). Done. General: The 2018 IRT approved mitigation plan reported 4,554.300 SMUs on the project site. The draft MY0 report notes 4,573.960 SMUs on the site due to the addition of Reach JN7 (37 linear feet of stream restoration). This represents a 19.66 SMU increase on the project site; please provide a separate mitigation plan addendum request (memo) for IRT review and approval to accompany the revised MY0 report and Record Drawings. Please confirm that the USACE non-standard buffer width calculation was recalculated on the entire project site after the addition of Reach JN7. Please provide the full set of revised stream buffer credit adjustment maps and supporting documentation in the mitigation plan addendum for IRT review. Confirmed, the non-standard buffer width calculation was recalculated for the entire project. The full set of revised maps and supporting documentation are in the mitigation plan addendum. Section 1.1 — Project Location and Description: "Funding will be supplied by the responsible party on a yearly basis until such time an endowment is established." Please clarify or remove this sentence. This sentence has been removed. Section 1.3 — Project Success Criteria: This section references the Apple Valley Mitigation Plan. Please update the text and QA/QC this section to confirm that the success criteria presented is consistent with the IRT approved mitigation plan for the Little Sebastian project. This typo has been corrected. Section 1.4 - Project Components: The proposed addition of JN7 represents a 19.66 SMU increase from the IRT approved mitigation plan. Please update the section accordingly. This section has been updated. Section 1.5 - Stream Mitigation Approach: In the report text, please also note the type of fencing installed to exclude livestock from the project conservation easement. If multiple fencing types were utilized, please describe in the report text. The fence is five-strand high tensile electric. This has been added to Section 1.6 Section 1.7 - Baseline Monitoring Performance (MY0): Please indicate how project photo points have been established and will be monitored on the site. Fixed digital image locations appear to have been established at each cross section, vegetation plot, stage recorder, and flow gauge. Per recent IRT discussion, DMS recommends adding photo points in the MY1 (2021) report at each project crossing location to document crossing stability and function during the monitoring term. RES has added information about fixed digital image locations to Section 2.0 and agrees to include crossings. Table 4 and Table 7: Table 4 notes that the project area is 6.42 acres and the planted acreage is 6.09 acres. Table 7 indicates a planted acreage of 10.7 acres. Please review and update the report as necessary. Based on the CCPV maps and a construction site visit, numerous areas of the project site do not appear to have been planted due to existing vegetation within the conservation easement. This error has been corrected Appendix A — Table 1: DMS recommends adding a note to Table 1 indicating that all crossings and utility easements have been removed from the credit calculations. Done. Appendix A— Table 2: In the table, please update the elapsed time since grading and planting. Done. Appendix B - Visual Stream Stability Assessment & Vegetation Condition Assessment Tables: On the tables, please include the date/s that the visual assessments were performed. These dates should also be included in future monitoring reports in these tables and Table 2. DMS understands this is a variance from the current template; however, it will help address IRT concerns discussed at the most recent IRT credit release meeting (2021). Done. Appendix D - Cross Section Sheets—Cross Section 4: The cross section sheet notes that the reach approach associated with the cross section location is Ell. The CCPV sheet notes El. Please review and update as necessary. The correct approach is El. This has been updated in the report. Appendix E - Cover Page: Please update the appendix cover sheet to "Record Drawings" to coincide with the table of contents and sheets provided. Done. Record Drawings: •The project conservation easement shown on the draft record drawings is identified as the Limits of Proposed Conservation Easement (LCE). The final recorded conservation easement (approved by the NC SPO) should be utilized for the record drawings. Please update the record drawings and legend accordingly. Once updated, please confirm that no areas of fencing or project crossings are located within the recorded conservation easement. The record drawings have been updated with the recorded easement. Two areas of fencing within the easement were found on MC1 and will be removed by MY1. • Thank you for showing the relocated utility line on the record drawings. Please confirm that no other utility lines/ utility easements cross the conservation easement. If others exist, please make sure to show them on the final record drawings. Confirmed. Digital Support File Comments: • A majority of features in the "Streams_AB_LittleSebastian" shapefile have lengths that differ from the lengths reported in the asset table by more than 5 ft. Please review these features and ensure that feature lengths reflect asset table lengths. Also, please be sure that there is a feature representing each record in the asset table. The stream shapefile has been updated to the most recent version which matches the asset table. • Note that there is a portion of the feature for MC3-B that is outside of the conservation easement. This is no longer an issue with the updated shapefile. • Please include unique ID's with the stream gauge features that correspond with the ID's that will be used for the supporting data. Done. • Please submit features that represent the mitigation plan design, ensuring that there is a feature representing each record in the asset table and that feature lengths are within 5 ft of asset table lengths (e.g. Mitigation Plan Footage or Acreage). Done. • Please include the as-built .DWG file with the final digital submission. Done. • Please associate stem heights and x,y coordinate data with individual stems for the fixed plots, and be prepared to indicate planted vs. volunteer stems in subsequent monitoring years. CVS datasheets have been included in the digital submission 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 2 1.4 Project Components 3 1.5 Stream Mitigation Approach 3 1.6 Construction and As-Built Conditions 5 1.7 Baseline Monitoring Performance (MYO) 6 Vegetation 6 Stream Geomorphology 6 Stream Hydrology 6 Wetland Hydrology 6 2.0 Methods 7 3.0 References 7 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 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: Record Drawings 1.0 Project Summary 1.1 Project 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. 1.2 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 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: • 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; Little Sebastian Site 1 As-Built Baseline Monitoring Report Surry County,NC October 2021 • 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. 1.3 Project 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 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 Little Sebastian Site 2 As-Built Baseline Monitoring Report Surry County,NC October 2021 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. 1.4 Project 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 Approach Linear Feet Ratio Cool Base SMU Restoration 2,758 1 2,721 Enhancement I 597 1.5 398 Enhancement II 1,898 2.5 759.2 Enhancement II 1,372 5 274.4 Enhancement II 819 7.5 109.2 Enhancement II 243 10 24.3 Preservation 418 10 41.8 Total 8,068 4,327.9 Credit Loss in Required Buffer -278.7 Credit Gain for Additional Buffer 505.1 Total Adjusted SMUs 4,554.300 1.5 Stream 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 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. Little Sebastian Site 3 As-Built Baseline Monitoring Report Surry County,NC October 2021 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. 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. Little Sebastian Site 4 As-Built Baseline Monitoring Report Surry County,NC October 2021 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. 1.6 Construction and As Built Conditions Stream construction was completed in February 2021and 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. 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.The 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. 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 Little Sebastian Site 5 As-Built Baseline Monitoring Report Surry County,NC October 2021 being less than 1,000 linear feet and there being two stage recorders proposed for the same reach, respectively. 1.7 Baseline Monitoring Performance (MY0) The Little Sebastian baseline monitoring activities were performed in March 2021.All baseline monitoring data is present below and in the appendices.The Project is on track to meeting vegetation and stream interim success criteria. Vegetation Setup and monitoring of six fixed vegetation plots and three random vegetation plots was completed after planting and stream construction on March 17,2021.Vegetation data are in Appendix C,associated photos are in Appendix B,and plot locations are in Appendix B.MY0 monitoring data indicates that all plots are exceeding the interim success criteria of 320 planted stems per acre. Planted stem densities ranged from 647 to 1,538 planted stems per acre with a mean of 1,111 planted stems per acre across all plots.A total of 10 species were documented within the plots. Volunteer species were not noted at baseline monitoring but are expected to establish in upcoming years. The average stem height in the plots was 1.5 feet. Visual assessment of vegetation outside of the monitoring plots indicates that the herbaceous vegetation is becoming well established throughout the project. Stream Geomorphology A total of 12 cross sections were installed on March 3,2021,and geomorphology data collection for MYO was conducted on March 16,2021. Summary tables and cross section plots are in Appendix D. Overall the baseline cross sections and profile relatively match the proposed design. The as-built conditions show that shear stress and velocities have been reduced for the restoration reach. The reaches were designed as gravel/cobble bed channels and remain classified as gravel/cobble bed channels post-construction. Visual assessment of the stream channel was performed to document signs of instability, such as eroding banks, structural instability, or excessive sedimentation. 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 on March 17, 2021 and will document bankfull events and flow days,respectively. Stream hydrology data will be included in the Monitoring Year 1 Report in this section and in the appendices.Gauge locations can be found on Figure 2 and photos are in Appendix B. RES will add a flow gauge on JN7 this winter. 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 on site post-stream construction.There is no hydroperiod success criteria for these groundwater wells.Wetland hydrology data will be included in the Monitoring Year 1 Report in this section and in the appendices.Gauge locations can be found on Figure 2 and photos are in Appendix B. Little Sebastian Site 6 As-Built Baseline Monitoring Report Surry County,NC October 2021 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. 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. 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 Site 7 As-Built Baseline Monitoring Report Surry County,NC October 2021 Appendix A Background Tables Table 1. Little Sebastian (ID-100027) -Mitigation Assets and Components Mitigation Existing As-Built Plan Migitation Restoration Mitigation Mitigation Project Segment Footage or Footage or Category Level Priority Level Ratio(X:1) Plan Credits Footage or Comments Acreage Acreage Acreage JN2-A 418 418 Cool P NA 10.00000 41.800 418 Livestock exclusion JN2-B 187 187 Cool El NA 1.50000 124.667 187 Buffer planting and livestock exclusion JN2-C 307 307 Cool ElI NA 2.50000 122.800 307 Buffer planting and livestock exclusion;31-foot crossing JN2-C 837 837 Cool ElI NA 2.50000 334.800 837 Buffer planting and livestock exclusion Channel relocation,bed and bank stabilization,crossing relocation,buffer plantings, JN2-D 39 43 Cool El NA 1.50000 28.667 43 and livestock exclusion;62-foot crossing Channel relocation,bed and bank stabilization,crossing relocation,buffer plantings, JN2-D 150 153 Cool El NA 1.50000 102.000 153 and livestock exclusion JN3-A 350 350 Cool ElI NA 7.50000 46.667 350 Buffer planting and livestock exclusion Channel relocation ini the natural valley,improved stream structures,buffer planting, JN3-B 900 781 Cool R I 1.00000 781.000 781 and livestock exclusion;43-foot crossing Channel relocation,bed and bank stabilization,crossing relocation,buffer plantings, JN3-B 224 262 Cool R I 1.00000 262.000 262 and livestock exclusion JN7* 0 0 Cool R 1.00000 0.000 Channel construction,bed and bank stabilization,buffer plantings,and livestock 37 exclusion;No Credit MC1-A 469 469 Cool ElI NA 7.50000 62.533 469 Buffer planting and livestock exclusion MC1-B 717 717 Cool ElI NA 5.00000 143.400 717 Buffer planting and livestock exclusion;41-foot utility line crossing MC1-B 260 260 Cool ElI NA 5.00000 52.000 260 Buffer planting and livestock exclusion MC1-C 545 555 Cool R 1.00000 555.000 Channel bed raised,improved stream structures,buffer planting,and livestock 555 exclusion MC3-A 243 243 Cool ElI NA 10.00000 24.300 243 Buffer planting and livestock exclusion MC3-B 402 402 Cool ElI NA 2.50000 160.800 402 Buffer planting and livestock exclusion;41-foot crossing MC3-C 214 214 Cool El NA 1.50000 142.667 214 Bank stabilization,improved stream structures,buffer planting,and livestock exclusion MC3-D 395 395 Cool ElI NA 5.00000 79.000 395 Buffer planting and livestock exclusion BS1-A 205 214 Cool R 1.00000 214.000 Channel bed raised,improved stream structures,buffer planting,and livestock 214 exclusion BS1-B 190 175 Cool ElI NA 2.50000 70.000 175 Buffer planting and livestock exclusion BS1-C 580 541 Cool R 1.00000 541.000 Channel bed raised,improved stream structures,buffer planting,and livestock 541 exclusion BS1-D 185 177 Cool ElI NA 2.50000 70.800 177 Buffer planting and livestock exclusion BS1-E 278 274 Cool R 1.00000 274.000 Channel bed raised,improved stream structures,buffer planting,and livestock 274 exclusion;45-foot crossing BS1-E 94 94 Cool R 1.00000 94.000 Channel bed raised,improved stream structures,buffer planting,and livestock 94 exclusion *Added between Final Mitigation Plan and Construction;no credit but potential to add credits if reach meets success criteria and back-up credits are needed Note:all crossings and utility easements have been removed from credit calculations. Project Credits Stream Riparian Non-rip Coastal Restoration Level Warm Cool Cold Wetland Wetland Marsh Restoration 2721.000 Re-establishment Rehabilitation Enhancement Enhancement I 398.000 Enhancement II 1167.100 Creation Preservation 41.800 NSBW 226.400 TOTALS 4,554.300 Table 2. Project Activity and Reporting History Little Sebastian Elapsed Time Since grading complete: 6 months Elapsed Time Since planting complete: 5 months Number of reporting Years : 0 Data Collection Completion or Activity or Deliverable Complete Delivery Mitigation Plan NA Nov-18 Final Design — Construction Plans NA Sep-20 Stream Construction NA Feb-21 Site Planting NA Mar-21 As-built (Year 0 Monitoring —VP, XS, Hydro, Visual) Mar-21 Oct-21 Year 1 Monitoring Year 2 Monitoring Year 3 Monitoring Year 4 Monitoring Year 5 Monitoring Year 6 Monitoring Year 7 Monitoring = The number of reports or data points produced excluding the baseline Table 3. Project Contacts Table Little Sebastian Designer RES/3600 Glenwood Ave., Suite 100, Raleigh, NC 27612 Primary project design POC Frasier Mullen, PE Construction Contractor KBS Earthwork Inc. /5616 Coble Church Rd., Julian, NC 27283 Construction contractor POC Kory Strader Survey Contractor Acension 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 Monitoring POC Ryan Medric (919) 741-6268 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 8-digit I 03040101 USGS Hydrologic Unit 14-digit I 03040101080020 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-A JN2-B JN2-C JN2-D JN3-A Length of reach(linear feet) 418 187 1114 189 350 Valley confinement(Confined, moderately confined,unconfined) UC MC MC MC UC Drainage area(Acres) 10 17 37 38 956 Perennial, Intermittent, Ephemeral I P P P P Parameters JN3-B MC1-A MC1-B MC1-C MC3-A/B/C Length of reach(linear feet) 1043 469 977 555 859 Valley confinement(Confined, moderately confined,unconfined) C UC UC UC UC Drainage area(Acres) 999 1862 1915 2921 3225 Perennial, Intermittent, Ephemeral P P P P P Parameters MC3-D BS1-A/C/E BS1-B/D JN7 Length of reach(linear feet) 395 1029 352 37 Valley confinement(Confined, moderately confined,unconfined) UC C C UC Drainage area(Acres) 3262 12-29 14-28 30 Perennial, Intermittent, Ephemeral P I/P P I •,5 Little Sebastian Mitigation Site IIIIIIIIIIIIIIIt ...-- LJ 1 q W ,eNion Rq Ed wLny, r--)) <JJ Gideon Mitigation Site Little Sebastian • Mitigation Site Lai P ,s d h ar,O,$ Legend 1 g \ L Conservation Easement Proposed Gideon Site Li p`.a'�tal� II Service Area -03040101 `C iDpyoilon Rd TLW-03040101080020 Q1-4 - -.,wi 1 Figure 1 -Site Location Map Date: 10/30/2018 w Drawn by: MDE Little Sebastian Mitigation Site 0 res I Checked by ATP 0 500 1,000 Il Surly County, North Carolina Feet Appendix B Visual Assessment Data , . orriks N 4`4.1,.s?h.; .... 1 • 11 W E :/• �s: . �ff'.. : `> JN2-B I , __ — — JN3-A / / L \— — . � I T - ., ," ,i. ,• ay. 47- • �:. i' ,, L: 'ri r.tr 0 100 200 :.: Il 0. • �sF .� J iyr ' .,'�, .. _ I' �' iF, A �' ,� • - I Feet rr I s^ Z+4. i � -1 1 I� �4 1- } ti I, + '..1,� ,• ,',. ,r 1 1 • Figure 2 1 `�� ,`4° 4 `jE �Ly . . Tit Current Conditions : . • 1 i + _ ,^ _ :;. �!: .- Plan View 1 , :. r. a ;. l 1 y . • . x,..- t. �. l MY0 2021 �- f r �s ,r , :a.• f Little Sebastian is • •;f' +f-'- _ ti k _ `�+(,,' ! .;L ''ihT ` ;,�I:` _ ac � ; , + "' . . �..� � .., .., ..,ALF r.. - Mitigation Site p. I ill;; 's►'r :. - i - JN2-A ' . t r r. GW1 ;,::.• y :' : = Surry County, NC ;'•' �`rt• ' t +F ,' '1 ' _ 4) I JN3-B Date: 10/7/2021 Drawn by:RTM r•j.•,.' R se. * `A:: ,i Y1. ••...• ,"=rr''r'.+• :; y,. vu.A 1,• E - F'• * raft^ "y 1 '•., yam; .a• ` i. ,I Lat:35.937509 Long:-81.234876 1 }.- �, . -e ,r, r 1 LEGEND } f°t- 4 -1,°' `}- '' vcs 1:' = I O Conservation Easement ` �,�. ,.1.--;". 6 ; cwz• Gideon Bank Site ^ •: 4 _ ®V1/4 �. , , ► . o Fixed Veg Plot ` c_ ,h Ili ";, 4 o Random Veg Plot JN2-D ' is Existing Wetland ` ,t r;,, ,1 5 I —Structure ` •r' ,► - - a Top of Bank a +� \jsh, ft Cross Section` '!,s;;,�" ,�#� •!�{ 1 F ' 1 Stream Mitigation Y MC1 A f `5 .�- r'; II —Restoration k f+r � .' .-•Ak4 © 1 ,, _, ��• 7 —Enhancement I t t >, R � � S r+,. JO'' ..; — �� Enhancement II t E,y . ♦ / / —Enhancement II (5:1) t+: ` , , ' Enhancement II (7.5:1) Enhancement II (10:1) • I +? yygy `�J ` —Preservation ;� • No Credit •�"r � \• • - ` Ci -- , „ • Groundwater Well C=Y_ :' • ir. ,,� 1'• G:y+y•,�:rMCi • dd 7 • '; i - I1 ;: ai�,'w a� Stage Recorder Vegetation Condition Assessmen , I + '1'..-y r•., gro41 } +L ' �, . �_ ? ,< "' '�;_ ,„� . , • Flow Gauge Target Community , I-.;,', es' ••``-`. y - +iC '• . k-! •, 7 y Ambient cc° Present Marginal Absent + .> '.-' , •' �+r`� ' , ', a Absent a f :.,: 'r'. ; ,.. . :.. .`1' '`-•-.i ` '` :f ' +e MC1 B , -r . No Fill .rx 'i, �- * � ` NPresent J . ' ` / +. .� 9iYY�y( . s tiI 7 r` rriis ..++ . 1. i} R F, F. ^:' , .. . . . . .. . Ui .. . . , . .. . . 1 _ . . . .. .L • ` .., _.: •_ ., ` ,t N . fl . BS1-A • Y •F 3C. • fr' . - W E JN3B i '' . ` ;ir s ,{ / i p;.....' \ . 0 100 zoo Il .. .. ,r .ii, �. / / ' - - - Feet ):, BS1-B } + Figure 2 i. 'f , . ` ' :, i' '' to �� . . • . _. Current Conditions • ',c' ;'• Plan View a :, �u' 111E. 11.,s;--1, 1.;444:: \-(''.- 2.- MYO 2021 i,, 4 e ! ':'-. ; rw---k. *' • : 4 1.):,. : 4 : . i - Little Sebastian �' 'yn ;= '* 1 i I:', .:' Y, / Mitigation Site -: . - ue--� i `. a / itte lh. . .- 1 .;. 1 . {. p " : .( ,, • i Surry County, NC _ (k T yy '. �. ` �T t '• 5V ,' :. . !. tiff. •i M1 c- t1 - -, /7 ,, t if f , 1" _ ,�'0- + • 4,. .. • / Date: 10/7/2021 Drawn by:RTM hip -,.\ • ',` + a '"" '-�_ - • ?• i Lat:35.937509 Long -81.234876 - T � ' .` LEGEND • • • ° { .,+ i7 I O Conservation Easement (1/4, '� - t* +}+ w;- ram' (\ Gideon Bank Site R t �' t.f , — — — o Fixed Veg Plot �• B 1-D — ,,� fi'- • i Existing Wetland ; .A t \ is n — — 1 BS1 E Structure = 4. I iir i ,,. - Top of Bank ;:. (i10,/ t tr .. .: ,-tom Cross Section 4E . :' Stream Mitigation + d 4r .r �� r+ , ti I ; s. ' ; MC3-B •fit —Restoration 9, , y t� .],..•. 4, f •! '. e .'L fl —Enhancement I ' ,�� MC3-A \ • ,,, `! Enhancement II = y � � —Enhancement II (5:1) �' , � ! i Enhancement II (7.5:1) �, i4U1-.. • . 4, �� !; i — �►,1k r \ iEnhancement II (10:1) i • r� © \ *2.: —Preservation .. .A _' . — • Groundwater Well No Credit ti s is ray jam' r -.P. Vegetation Condition Assessmen - \ Stage Recorder r. ' - . -�' • Flow Gauge w Target Community �' �' \ Present Marginal Absent -•1 -aw I • Ambient a Absent No Fill !qf;.►y.. • ■ i.. T 0. _.f: '�1' w. ..yri.'iSigf--k At MC3-D N Present ,fl Visual Stream Stability Assessment Reach JN3 Date Mar-21 Assessed Stream Length 1043 Assessed Bank Length 2086 Number Stable, Amount of % Stable, Performing as Total Number Unstable Performing as Ma'or Channel Cate s or Metric Intended in As-built Footas a Intended Bank Surface Scour/Bare Bank lacking vegetative cover resulting simply from poor growth 0 100% Bank and/or surface scour Bank toe eroding to the extent that bank failure appears likely. Does Toe Erosion NOT include undercuts that are modest,appear sustainable and are 0 100% providing habitat. Bank Failure Fluvial and geotechnical-rotational, slumping,calving,or collapse 0 100% Totals 0 100% Structure Grade Control Grade control structures exhibiting maintenance of grade across the 10 10 100% sill. Bank erosion within the structures extent of influence does not Bank Protection exceed 15%. (See guidance for this table in DMS monitoring 18 18 100% guidance document) Visual Stream Stability Assessment Reach MC1-C Date Mar-21 Assessed Stream Length 555 Assessed Bank Length 1110 Number Stable, Amount of % Stable, Performing as Total Number Unstable Performing as Ma'or Channel Cate s or Metric Intended in As-built Foota s e Intended Bank Surface Scour/Bare Bank lacking vegetative cover resulting simply from poor growth 0 100% Bank and/or surface scour Bank toe eroding to the extent that bank failure appears likely. Does Toe Erosion NOT include undercuts that are modest,appear sustainable and are 0 100% providing habitat. Bank Failure Fluvial and geotechnical-rotational, slumping,calving,or collapse 0 100% Totals 0 100% Structure Grade Control Grade control structures exhibiting maintenance of grade across the 2 2 100% sill. Bank erosion within the structures extent of influence does not Bank Protection exceed 15%. (See guidance for this table in DMS monitoring 7 7 100% guidance document) Visual Stream Stability Assessment Reach B S 1 Date Mar-21 Assessed Stream Length 1123 Assessed Bank Length 2246 Number Stable, Amount of % Stable, Performing as Total Number Unstable Performing as Ma'or Channel Cate s or Metric Intended in As-built Foota s e Intended Bank Surface Scour/Bare Bank lacking vegetative cover resulting simply from poor growth 0 100% Bank and/or surface scour Bank toe eroding to the extent that bank failure appears likely. Does Toe Erosion NOT include undercuts that are modest,appear sustainable and are 0 100% providing habitat. Bank Failure Fluvial and geotechnical-rotational, slumping,calving,or collapse 0 100% Totals 0 100% Structure Grade Control Grade control structures exhibiting maintenance of grade across the 8 8 100% sill. Bank erosion within the structures extent of influence does not Bank Protection exceed 15%. (See guidance for this table in DMS monitoring 3 3 100% guidance document) Table 6 Vegetation Condition Assessment Planted Acreage 10.7 Date Mar-21 Vegetation Category Definitions Mapping CCPV Number of Combined %of Planted Threshold Depiction Polygons Acreage Acreage 1. Bare Areas Very limited cover of both woody and herbaceous material. 0.1 acres Red Simple 0 0.00 0.0% Hatch 2. Low Stem Density Areas Woody stem densities clearly below target levels based on MY3,4,or 5 stem count criteria. 0.1 acres Orange 0 0.00 0.0% Simple Hatch Total 0.0% 3.Areas of Poor Growth Rates or Vigor Areas with woody stems of a size class that are obviously small given the monitoring year. 0.25 acres Orange 0 0.00 0.0% Simple Hatch Cumulative Total 0.0% Easement Acreage 25.91 Mapping CCPV Number of Combined %of Vegetation Category Definitions pp g Easement Threshold Depiction Polygons Acreage Acreage 4.Invasive Areas of Concern Areas or points(if too small to render as polygons at map scale). 1000 SF Yellow 0 0.00 0.0% Crosshatch 5.Easement Encroachment Areas3 Areas or points(if too small to render as polygons at map scale). none Red ample 0 0.00 0.0% Hatch 1=Enter the planted acreage within the easement. This number is calculated as the easement acreage minus any existing mature tree stands that were not subject to supplemental planting of the understory,the channel acreage,crossings or any other elements not directly planted as part of the project effort. 2 =The acreage within the easement boundaries. 3=Encroachment may occur within or outside of planted areas and will therefore be calculated against the overall easement acreage. In the event a polygon is cataloged into items 1,2 or 3 in the table and is the result of encroachment,the associated acreage should be tallied in the relevant item(i.e.,item 1,2 or 3)as well as a parallel tally in item 5. 4=Invasives may occur in or out of planted areas,but still within the easement and will therefore be calculated against the overall easement acreage. Invasives of concern/interest are listed below. The list of high concern spcies are those with the potential to directly outcompete native,young,woody stems in the short-term(e.g.monitoring period or shortly thereafter)or affect the community structure for existing, more established tree/shrub stands over timeframes that are slightly longer(e.g. 1-2 decades). The low/moderate concern group are those species that generally do not have this capacity over the timeframes discussed and therefore are not expected to be mapped with regularity,but can be mapped, if in the judgement of the observer their coverage,density or distribution is suppressing the viability,density,or growth of planted woody stems. Decisions as to whether remediation will be needed are based on the integration of risk factors by EEP such as species present,their coverage, distribution relative to native biomass, and the practicality of treatment. For example, even modest amounts of Kudzu or Japanese Knotweed early in the projects history will warrant control, but potentially large coverages of Microstegium in the herb layer will not likley trigger control because of the limited capacities to impact tree/shrub layers within the timeframes discussed and the potential impacts of treating extensive amounts of ground cover. Those species with the"watch list"designator in gray shade are of interest as well,but have yet to be observed across the state with any frequency. Those in red italics are of particular interest given their extreme risk/threat level for mapping as points where isolated specimens are found,particularly ealry in a projects monitoring history. However,areas of discreet,dense patches will of course be mapped as polygons. The symbology scheme below was one that was found to be helpful for symbolzing invasives polygons, particulalry for situations where the conditon for an area is somewhere between isolated specimens and dense,discreet patches. In any case,the point or polygon/area feature can be symbolized to describe things like high or low concern and species can be listed as a map inset,in legend items if the number of species are limited or in the narrative section of the executive summary. Little Sebastian MYO Vegetation Monitoring Plot Photos T. k' a �� r .r '� . *, `101r .I j'C ! n J 1..• .. s _,tea N� !. °4 6.^""'�'' ram- of t _ � �F .z,....4, ry,�n � ��. kUSIIt� M/1 a• -_ -� - " ,ram` '�.x':: *'.`fig'w^" --'^ `� Vegetation Plot 1 (3/17/2021) Vegetation Plot 2 (3/17/2021) t _ "Mil i . d'.cs . 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Vegetation Plot 3 (3/17/2021) Vegetation Plot 4 (3/17/2021) li ::--.' --..: ,, , iw.,, _If,.:-' . , 44,,, =, -, -,.. 1„L h�. r S, ' 45y .: i" a� 0, ,,:7-41', '41. , Vegetation Plot 5 (3/17/2021) Vegetation Plot 6 (Photo Unavailable) Little Sebastian Monitoring Device Photos f Wy ,; W a :vc 1 "'rr' ?, !, �,_� Pam: �:� ,,.,, a ria: # 1' " ,',a s 1. 9f ) -:4r ' a , • 5: r `` �� y: l 'i 7. Flow. Gauge JN2-A Stage Recorder JN3 `2�.a hYJ� '� ..'4 �4y'jt ! g r / x., :sl.. '�!b: 2- S- ."ya w _ r :r'b.,.:317:::',.h.4" : I:: oriffm, r 4. tt ma g „1 L'.. F & �'�'? s5r� a ,s q,. " mot P. M 22 ,� t s .` .. ! 4. I.. 4_e.1"'x v a '-= p. �. t�t3, c � ter�$� tim �. r� .yam c „A err 4 ! : !W ''t ', _rs t,dg3. �: n� x ,u�ti-ice,. xx ,1 P .1' �. ,ti rya e'"; .'.� e Flow Gauge BS1-A Stage Recor der BS1-E ttigia r��'9R ., m-^° ,rti afi 4s - t - " f � ,i tea:. "." ` � '` .; . u t i ' sir ....- '�' y r0e7-.± 'F � '' x4 -„ors Y 1,- yam .¢�r: S��dc `_d �rP-r E `"`1'�' - e, w ti `P t. .. e- .4 A .,..,:-..,:-_,-,.,-7-,,,,-;;.. ,_..:,,.., _00,,,.,..!A ,..,.:,i,.. ,--,-,-. „,..‘T, .._ --...,„---,,„,,-..- r=� y s - /',', te, � �� ,.aq j� s ""`'- � ,> rx r., -te �.� @• � �-I �.� ` s ::�1 ��,e ttiO Groundwater Well 1 Groundwater Well 2 Little Sebastian Reach JN7 rivr0. ...4 , - 1, ,.; 14414''' ‘:11,4 7: ' .f cflipP1111911111111pflirr ' aid ,/fir ♦ ,, aav l � , . -;,,i iii:., . Of;ij k. * - --.4e.1 .0.41.titt:,,..0.41,ii,, 1 it 1IIiei1iUi14 , * i - n �A at .. ti . _{hi� +1 �€ s:i • 1 ` • ,� 1� ;fie � , c+ a • 4 - 1 t' - L''I'l.-.'N' Y ' ' ,'''' '',- . --- - 17;'''- ,1 I. ' ,)•;414.47?' •.V.4..S1-7::. - . . . __ _ . ..._ _ ,_ _ _ _ _. . . _ ._ . _ . . ____ __ _ _ _ ____ _. _ ._.. . _____.,,,,..-„,...„, ___.,...= _ . . _ _ _ . . . , _ __. _ -e- - - , "-- - - _ - •a �! Yry ii. y. 54 ;ate, ry — yam;;, S - yY C _ FTC= '`t -.:. Appendix C Vegetation Plot Data Appendix C.Vegetation Plot Data Table 7. Planted Species Summary Common Name Scientific Name Mit Plan % As-Built % Total Stems Planted Willow Oak Quercus phellos 15 15 1,600 River Birch Betula nigra 15 15 1,600 Sycamore Platanus occidentalis 10 15 1,600 Water Oak Quercus nigra 15 14 1,600 Northern Red Oak Quercus rubra 10 11 1,200 Yellow Poplar Liriodendron tulipifera 10 10 1,100 Green Ash Fraxinus pennsylvanica 10 5 600 Persimmon Diospyros virginiana 5 5 600 Buttonbush Cephalanthus occidentalis 0 5 600 Sugarberry Celtis laevigata 0 5 600 Elderberry Sambucus canadensis 5 0 0 Nyssa sylvatica Blackgum 5 0 0 Total 11,100 Planted Area 10.7 As-built Planted Stems/Acre 1,037 Table 8. Vegetation Plot Mitigation Success Summary Planted Volunteer Total Success Averaged Plot # Criteria Planted Stem Stems/Acre Stems/Acre Stems/Acre Met? Height (ft) 1 931 0 931 Yes 1.5 2 1335 0 1335 Yes 1.3 3 1133 0 1133 Yes 1.8 4 1214 0 1214 Yes 1.8 5 647 0 647 Yes 1.4 6 1052 0 1052 Yes 1.5 R1 1012 0 1012 Yes 1.5 R2 1133 0 1133 Yes 1.6 R3 1538 0 1538 Yes 1.4 Project Avg 1111 0 1111 Yes 1.5 Appendix C.Vegetation Plot Data Table 9. Stem Count Total and Planted by Plot Species Little Sebastian Current Plot Data(MVO 2021) Annual Means 100027-01-0001 100027-01-0002 100027-01-0003 100027-01-0004 100027-01-0005 100027-01-0006 100027-01-R1 100027-01-R2 100027-01-R3 MYO(2021) Scientific Name Common Name Species Type PnoLS P-all T PnoLS P-all T PnoLS P-all T PnoLS P-all T PnoLS P-all T PnoLS P-all T PnolS P-all T PnolS P-all T PnolS P-all T PnoLS P-all T Betula nigra river birch Tree 6 6 6 4 4 4MIMI * IIIIII . 5 5 5 1 1 1 2 2 2 18 18 18 Celtis laevigata sugarberry Tree 1 1 1 2 2 2 1 1 1 4 4 4 Cephalanthus occidentalis common buttonbush Shrub 5 5 5 6 6 6• 1 1 1 1 1 1 8 8 8 2 2 2 3 3 3 26 26 26 Diospyros virginiana common persimmon Tree 2 2 2 3 3 3 1 1 1 1 1 1 7 7 7 Fraxinus pennsylvanica green ash Tree 1 1 1 _ 1 1 1 2 2 2 2 2 2 3 3 3 9 9 9 Liriodendron tulipifera tuliptree Tree 3 3 3 1 1 1 2 2 2 =MEN 1 1 1 1 1 1 3 3 3 11 11 11 Platanus occidentalis American sycamore Tree 4 4 4 6 6 6 15 15 15 8 8 8 2 2 2 6 6 6 3 3 3 5 5 5 4 4 4 53 53 53 Quercus nigra water oak Tree I I 4 4 4 2 2 2 3 3 3 2 2 2 2 2 2 5 5 5 4 4 4 7 7 7 29 29 29 Quercus phellos willow oak Tree 1 1 1 8 8 8 4 4 4 14 14 14 3 3 3 2 2 2 7 7 7 5 5 5 9 9 9 53 53 53 Quercus rubra northern red oak Tree 4 4 4 6 6 6 2 2 2 1 1 1 2 2 2 7 7 7 2 2 2 7 7 7 6 6 6 37 37 37 Stem count 23 23 23 33 33 33 28 28 28 30 30 30 16 16 16 26 26 26 25 25 25 28 28 28 38 38 38 247 247 247 size(ares) 1 1 1 1 1 1 1 1 1 9 size(ACRES) 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.22 Species count 6 6 6 7 7 7 6 6 6 7 7 7 8 8 8 8 8 8 5 5 5 9 9 9 9 9 9 10 10 10 Stems per ACRE 931 931 931 1335 1335 1335 1133 1133 1133 1214 1214 1214 647 647 647 1052 1052 1052 1012 1012 1012 1133 1133 1133 1538 1538 1538 1111 1111 1111 Appendix D Stream Measurement and Geomorphology Data Table 10. Baseline Stream Data Summary Little Sebastian Mitigation Site -Reach JN-3 Parameter Gauge2 Regional Curve Pre-Existing Condition Reference Reach(es)Data Design Monitoring Baseline Dimension and Substrate-Riffle Only LL UL Eq. Min Mean Med Max SDb n Min Mean Med Max SDb n Min Med Max Min Mean Med Max SDb n Bankfull Width(ft) --- --- --- 14.9 16.4 -- 17.9 --- 2 7.1 12.3 -- 17.5 --- 2 --- 16.0 --- --- --- 15.0 --- --- 1 Floodprone Width(ft) 37.0 48.5 -- 60.0 --- 2 >30 51.3 -- 72.5 --- 2 --- >50 --- --- --- >64.4 --- --- 1 Bankfull Mean Depth(ft) --- --- --- 1.6 1.7 -- 1.6 --- 2 1.0 1.3 -- 1.6 --- 2 --- 2.2 --- --- --- --- --- --- --- 1Bankfull Max Depth(ft) 2.1 3.0 -- 3.9 --- 2 1.2 1.9 -- 2.6 --- 2 --- 2.9 --- --- --- 2.2 --- --- 1 Bankfull Cross Sectional Area(ft2) --- --- --- 26.1 27.3 -- 28.5 --- 2 6.7 17.2 -- 27.7 --- 2 --- 26.9 --- --- --- 22.8 --- --- 1 Width/Depth Ratio 8.5 9.9 -- 11.2 --- 2 7.4 9.3 -- 11.1 --- 2 --- 9.5 --- --- --- --- --- --- --- Entrenchment Ratio 2.5 3.0 -- 3.4 --- 2 >4 4.2 -- 4.3 --- 2 --- >2.2 --- --- --- >4.3 --- --- 1 'Bank Height Ratio 1.0 1.2 -- 1.3 --- 2 1.0 1.2 -- 1.3 --- 2 --- 1.0 --- --- --- 1.0 --- --- 1 Profile Riffle Length(ft) --- --- --- --- --- --- 5.6 --- --- 17 --- --- 7 --- 29 14 25 22 48 10 18 Riffle Slope(ft/ft) --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- 0.43 2.605 2.735 5.1 1.23176 18 Pool Length(ft) --- --- --- --- --- --- 4 --- --- 16 --- --- 4 --- 18 19 35 34 55 10 17 Pool Max depth(ft) --- --- --- --- --- --- --- --- --- --- --- --- -- --- --- --- --- --- --- --- --- Pool Spacing(ft) --- --- --- --- --- --- 26 --- --- 68 --- --- 29 --- 75 38 59 59 78 11 15 Pattern Channel Beltwidth(ft) --- --- --- --- --- --- 20 --- --- 85 --- --- 39 --- 94 39 --- --- 94 --- --- Radius of Curvature(ft) --- --- --- --- --- --- 7 --- --- 54 --- --- 14 --- 60 14 --- --- 60 --- --- Rc:Bankfull width(ft/ft) --- --- --- --- --- --- 0.9 --- --- 3.7 --- --- 0.9 --- 3.7 0.9 --- --- 3.7 --- --- Meander Wavelength(ft) --- --- --- --- --- --- 33 --- --- 105 --- --- 74 --- 116 74 --- --- 116 --- --- Meander Width Ratio --- --- --- --- --- --- 2.4 --- --- 5.9 --- --- 2.4 --- 5.9 2.4 --- --- 5.9 --- --- Transport parameters Reach Shear Stress(competency)lb/f2 --- --- --- Max part size(mm)mobilized at bankfull -- Stream Power(transport capacity) W/m2 --- -- Additional Reach Parameters Rosgen Classification E3 E3/E4b E3 E3 Bankfull Velocity(fps) --- --- --- --- -- Bankfull Discharge(cfs) --- --- --- -- Valley length(ft) 602 160 945 945 Channel Thalweg length(ft) 772 189 1088 1088 Sinuosity(ft) 1.225 1.195 1.15 1.15 Water Surface Slope(Channel)(ft/ft) --- -- Channel slope(ft/ft) 0.0125 1.85 0.0085 0.0085 3Bankfull Floodplain Area(acres) --- --- -- 4%of Reach with Eroding Banks --- --- Channel Stability or Habitat Metric --- --- Biological or Other --- --- Shaded cells indicate that these will typically not be filled in. 1=The distributions for these parameters can include information from both the cross-section measurements and the longitudinal profile. 2=For projects with a proximal USGS gauge in-line with the project reach(added bankfull verification-rare). 3.Utilizing XS measurement data produce an estimate of the bankfull floodplain area in acres,which should be the area from the top of bank to the toe of the terrace riser/slope. 4=Proportion of reach exhibiting banks that are eroding based on the visual survey for comparison to monitoring data; 5.Of value/needed only if then exceeds 3 Table 10. Baseline Stream Data Summary Little Sebastian Mitigation Site -Reach MC1-C Parameter Gauge2 Regional Curve Pre-Existing Condition Reference Reach(es)Data Design Monitoring Baseline Dimension and Substrate-Riffle Only LL UL Eq. Min Mean Med Max SDb n Min Mean Med Max SDb n Min Med Max Min Mean Med Max SDb n Bankfull Width(ft) --- --- --- --- --- 17.4 --- --- 1 7.1 12.3 -- 17.5 --- 2 --- 23.0 --- --- --- 21.3 --- --- 1 Floodprone Width(ft) --- --- 50.0 --- --- 1 >30 51.3 -- 72.5 --- 2 --- >50 --- --- --- >64.9 --- --- 1 Bankfull Mean Depth(ft) --- --- --- --- --- 1.8 --- --- 1 1.0 1.3 -- 1.6 --- 2 --- 2.4 --- --- --- --- --- --- --- 1Bankfull Max Depth(ft) --- --- 2.9 --- --- 1 1.2 1.9 -- 2.6 --- 2 --- 3.2 --- --- --- 3.2 --- --- 1 Bankfull Cross Sectional Area(ft2) --- --- --- --- --- 30.6 --- --- 1 6.7 17.2 -- 27.7 --- 2 --- 54.4 --- --- --- 49.8 --- --- 1 Width/Depth Ratio --- --- 10.0 --- --- 1 7.4 9.3 -- 11.1 --- 2 --- 9.7 --- --- --- --- --- --- --- Entrenchment Ratio --- --- 2.9 --- --- 1 >4 4.2 -- 4.3 --- 2 --- >2.2 --- --- --- >3 --- --- 1 'Bank Height Ratio --- --- 1.0 --- --- 1 1.0 1.2 -- 1.3 --- 2 --- 1.0 --- --- --- 1.0 --- --- 1 Profile Riffle Length(ft) --- --- --- --- --- --- 5.6 --- --- 17 --- --- 10 --- 41 14 25 18 61 17 7 Riffle Slope(ft/ft) --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- 0.19 2.32 1.35 4.8 1.89753 7 Pool Length(ft) --- --- --- --- --- --- 4 --- 16 --- --- 6 --- 25 36 51 48 73 12 6 Pool Max depth(ft) --- --- --- --- --- --- --- --- --- --- --- --- -- --- --- --- --- --- --- --- --- Pool Spacing(ft) --- --- --- --- --- --- 26 --- --- 68 --- --- 41 --- 108 65 81 73 109 19 5 Pattern Channel Beltwidth(ft) --- --- --- --- --- --- 20 --- --- 85 --- --- 56 --- 135 56 --- --- 135 --- --- Radius of Curvature(ft) --- --- --- --- --- --- 7 --- --- 54 --- --- 21 --- 86 21 --- --- 86 --- --- Rc:Bankfull width(ft/ft) --- --- --- --- --- --- 0.9 --- --- 3.7 --- --- 1 --- 4 1 --- --- 4 --- --- Meander Wavelength(ft) --- --- --- --- --- --- 33 --- --- 105 --- --- 106 --- 167 106 --- --- 167 --- --- Meander Width Ratio --- --- --- --- --- --- 2.4 --- --- 5.9 --- --- 2 --- 6 2 --- --- 6 --- --- Transport parameters Reach Shear Stress(competency)lb/f2 --- --- --- Max part size(mm)mobilized at bankfull -- Stream Power(transport capacity) W/m2 --- -- Additional Reach Parameters Rosgen Classification E3 E3/E4b E3 E3 Bankfull Velocity(fps) --- --- --- --- -- Bankfull Discharge(cfs) --- --- --- -- Valley length(ft) 1109 160 478 478 Channel Thalweg length(ft) 1288 189 542 542 Sinuosity(ft) 1.16 1.195 1.13 1.13 Water Surface Slope(Channel)(ft/ft) --- -- Channel slope(ft/ft) 0.008 1.85 0.0085 0.0085 3Bankfull Floodplain Area(acres) --- --- -- 4%of Reach with Eroding Banks --- --- Channel Stability or Habitat Metric --- --- Biological or Other --- --- Shaded cells indicate that these will typically not be filled in. 1=The distributions for these parameters can include information from both the cross-section measurements and the longitudinal profile. 2=For projects with a proximal USGS gauge in-line with the project reach(added bankfull verification-rare). 3.Utilizing XS measurement data produce an estimate of the bankfull floodplain area in acres,which should be the area from the top of bank to the toe of the terrace riser/slope. 4=Proportion of reach exhibiting banks that are eroding based on the visual survey for comparison to monitoring data; 5.Of value/needed only if then exceeds 3 Table 10. Baseline Stream Data Summary Little Sebastian Mitigation Site -Reach BS-1 Parameter Gauge2 Regional Curve Pre-Existing Condition Reference Reach(es)Data Design Monitoring Baseline Dimension and Substrate-Riffle Only LL UL Eq. Min Mean Med Max SDb n Min Mean Med Max SDb n Min Med Max Min Mean Med Max SDb n Bankfull Width(ft) --- --- --- --- --- 3.2 --- --- 1 7.1 12.3 -- 17.5 --- 2 --- 4.5 --- 5.7 6.0 --- 6.3 --- 2 Floodprone Width(ft) --- --- 60.0 --- --- 1 >30 51.3 -- 72.5 --- 2 --- --- --- 11.3 17.6 --- 23.8 --- 2 Bankfull Mean Depth(ft) --- --- --- --- --- 1.6 --- --- 1 1.0 1.3 -- 1.6 --- 2 --- 0.6 --- --- --- --- --- --- --- 1Bankfull Max Depth(ft) --- --- 3.9 --- --- 1 1.2 1.9 -- 2.6 --- 2 --- 0.7 --- 0.7 0.9 --- 1.1 --- 2 Bankfull Cross Sectional Area(ft2) --- --- --- --- --- 2.4 --- --- 1 6.7 17.2 -- 27.7 --- 2 --- 2.7 --- 2.6 3.3 --- 4.0 --- 2 Width/Depth Ratio --- --- 4.2 --- --- 1 7.4 9.3 -- 11.1 --- 2 --- 7.4 --- --- --- --- --- --- --- Entrenchment Ratio --- --- 3.4 --- --- 1 >4 4.2 -- 4.3 --- 2 --- >1.4 --- 2.0 2.9 --- 3.8 --- 2 'Bank Height Ratio --- --- 1.0 --- --- 1 1.0 1.2 -- 1.3 --- 2 --- 1.0 --- 1.0 1.0 --- 1.0 --- 2 Profile Riffle Length(ft) --- --- --- --- --- --- 5.6 --- --- 17 --- --- 4.0 --- 11 4 16 16 32 8 19 Riffle Slope(ft/ft) --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- 0.1 5.9 5.0 14.5 3.7 19 Pool Length(ft) --- --- --- --- --- --- 4 --- 16 --- --- 2.0 --- 7 11 18 15 43 8 17 Pool Max depth(ft) --- --- --- --- --- --- --- --- --- --- --- --- -- --- --- --- --- --- --- --- --- Pool Spacing(ft) --- --- --- --- --- --- 26 --- --- 68 --- --- 5.0 --- 20 21 34 33 63 10 17 Pattern Channel Beltwidth(ft) --- --- --- --- --- --- 20 --- --- 85 --- --- 13.0 --- 19.0 13.0 --- --- 19.0 --- --- Radius of Curvature(ft) --- --- --- --- --- --- 7 --- --- 54 --- --- 4.0 --- 10.0 4.0 --- --- 10.0 --- --- Rc:Bankfull width(ft/ft) --- --- --- --- --- --- 0.9 --- --- 3.7 --- --- 1.0 --- 2.0 1.0 --- --- 2.0 --- --- Meander Wavelength(ft) --- --- --- --- --- --- 33 --- --- 105 --- --- 21.0 --- 32.0 21.0 --- --- 32.0 --- --- Meander Width Ratio --- --- --- --- --- --- 2.4 --- --- 5.9 --- --- 3.0 --- 4.0 3.0 --- --- 4.0 --- --- Transport parameters Reach Shear Stress(competency)lb/f2 --- --- --- Max part size(mm)mobilized at bankfull -- Stream Power(transport capacity) W/m2 --- -- Additional Reach Parameters Rosgen Classification B4a E3/E4b B4/E4 B4/E4 Bankfull Velocity(fps) --- --- --- --- -- Bankfull Discharge(cfs) --- --- --- -- Valley length(ft) 1508 160 1017 1017 Channel Thalweg length(ft) 1703 189 1028 1028 Sinuosity(ft) 1.13 1.195 1.01 1.01 Water Surface Slope(Channel)(ft/ft) --- -- Channel slope(ft/ft) 0.049 1.85 0.025-0.035 0.025-0.035 3Bankfull Floodplain Area(acres) --- --- -- 4%of Reach with Eroding Banks --- --- Channel Stability or Habitat Metric --- --- Biological or Other --- --- Shaded cells indicate that these will typically not be filled in. 1=The distributions for these parameters can include information from both the cross-section measurements and the longitudinal profile. 2=For projects with a proximal USGS gauge in-line with the project reach(added bankfull verification-rare). 3.Utilizing XS measurement data produce an estimate of the bankfull floodplain area in acres,which should be the area from the top of bank to the toe of the terrace riser/slope. 4=Proportion of reach exhibiting banks that are eroding based on the visual survey for comparison to monitoring data; 5.Of value/needed only if then exceeds 3 Appendix D. Table 11 -Monitoring Data-Dimensional Morphology Summary(Dimensional Parameters-Cross Sections) Project Name/Number: Little Sebastian #100027 Cross Section 1(Riffle) Cross Section 2(Riffle) Cross Section 3(Riffle) Cross Section 4(Riffle) Cross Section 5(Riffle) Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSA' 1214.7 1211.2 1170.7 1165.0 1150.6 Bankfull Width(ft)1 5.4 5.4 5.3 9.0 21.3 Floodprone Width(ft)1 13.1 8.7 >34.8 >43.9 >64.9 Bankfull Max Depth(ft)2 0.7 0.5 1.0 0.9 3.2 Low Bank Elevation(ft) 1214.74 1211.2 1170.7 1165.0 1150.6 Bankfull Cross Sectional Area(ft2)2 2.4 2.3 3.5 3.5 49.8 Bankfull Entrenchment Ratios 2.4 1.6 >6.6 >4.9 >3.0 Bankfull Bank Height Ratios 1.0 1.0 1.0 1.0 1.0 Cross Section 6(Pool) Cross Section 7(Riffle) Cross Section 8(Pool) Cross Section 9(Pool) Cross Section 10(Riffle) Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSA' 1150.5 1157.4 1157.2 1188.3 1187.6 Bankfull Width(ft)1 - 15.0 - - 6.3 Floodprone Width(ft)1 - >64.4 - - 23.8 Bankfull Max Depth(ft)2 4.1 2.2 3.6 1.0 1.1 Low Bank Elevation(ft) - 1157.4 - - 1187.6 Bankfull Cross Sectional Area(ft2)2 56.7 22.8 34.8 3.6 4.0 Bankfull Entrenchment Ratios - >4.3 - - 3.8 Bankfull Bank Height Ratios - 1.0 - - 1.0 Cross Section 11(Riffle) Cross Section 12(Pool) Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSA' 1136.4 1136.1 Bankfull Width(ft)1 5.7 - Floodprone Width(ft)1 11.3 - Bankfull Max Depth(ft)2 0.7 1.2 Low Bank Elevation(ft) 1136.4 - Bankfull Cross Sectional Area(ft2)2 2.6 4.6 Bankfull Entrenchment Ratios 2.0 - Bankfull Bank Height Ratios 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 �1 3 E is S} 1 4 1.L''/.;. y� r'— Y' ,.. µcr �; wi - .`„,-- - j ire " :a - 4 -' '''-- > er z .,e r S ,= - r; ' `` T nn r r s51„ .- ,4- t 'X°4 R i +4: = yap 3 S d _ �y +r illit ,/� ` tie '"' 4 M g.4,-.4,,,,-,.,,..-.,1*- -ii,7'.,,...-...-""4. .i' - -,_11*--::' 4:t4V"4-''''..1" Upstream Downstream Little Sebastian -Reach JN2-B -Cross Section 1 -Riffle-Enhancement I 1219 1218 1217 ° 1216 as d w 1215 1214 1213 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance(ft) MY0 2021 — — —Approx.Bankfull Floodprone Area Low Bank Elevation 3X Vertical Exaggeration Cross Section 1 (Riffle) Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSA 1214.7 Bankfull Width(ft)' 5.4 Floodprone Width(ft)' 13.1 Bankfull Max Depth(ft)2 0.7 Low Bank Elevation(ft) 1214.74 Bankfull Cross Sectional Area(ft2)2 2.4 Bankfull Entrenchment Ratio' 2.4 Bankfull Bank Height Ratio' 1.0 1 -Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfufl elevation 2-Uses the current years low top of bank as the basis for adjusting each subsequent years bankull elevation -,--,-li :" yi- r.�".i ; ,.. " p_• - •. s - i T ' �' 7 t- - ;.wr e *'- ram: ,.- a � � `^�.�, :. �, ♦ a j. k ra ` - = --,....:.-..-1.-: ��5 3 sq d" Y ss Upstream Downstream Little Sebastian -Reach JN2-B -Cross Section 2 -Riffle-Enhancement I 1216 1215 1214 c ° 1213 d w 1212 1210 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance(ft) MY0 2021 — — —Approx.Bankfull Floodprone Area Low Bank Height 3X Vertical Exaggeration Cross Section 2 (Riffle) Base MY1 MY2 MY3 MYS MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSA' 1211.2 Bankfull Width(ft)' 5.4 Floodprone Width(ft)' 8.7 BankfullMaxDepth(ft)2 0.5 Low Bank Elevation(ft) 1211.2 Bankfull Cross Sectional Area(ft2)2 2.3 Bankfull Entrenchment Ratio' 1.6 Bankfull Bank Height Ratio' 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 tv a.. yq s kr .9a .71 "§• s r v, Upstream Downstream Little Sebastian - Reach JN2-C -Cross Section 3- Riffle-Enhancement II 1175 1174 1173 ° 1172 1171 1170 1169 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance(ft) MY0 2021 — — -Approx.Bankfull Floodprone Area Low Bank Elevation 3X Vertical Exaggeration Cross Section 3 (Riffle) Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSA1 1170.7 Bankfull Width(ft)1 5.3 Floodprone Width(ft)1 >34.8 Bankfull Max Depth(ft)2 1.0 Low Bank Elevation(ft) 1170.7 Bankfull Cross Sectional Area(ft2)2 3.5 Bankfull Entrenchment Ratio t >6.6 Bankfull Bank Height Ratio t 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 F:.-.,mot; ' '�,',_ P u, a ,::',,i:1:::;,,,,':.4„:1;:.'' ..1- ': - -7'7'..;4.,::',...:i.-_. _ ��• A _3 :� J "� - i v µ, k'^ L: `P`$• ta. . I x Upstream Downstream Little Sebastian -Reach JN2-D -Cross Section 4-Riffle-Enhancement I 1169 1168 1167 c ° 1166 o w 1165 , 1164 1163 , 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance(ft) 3MY0 2021 — — A rox.Bankfull Floodprone Area Low Bank Height Exaggerationx Vertical pp p 9 Cross Section 4 (Riffle) Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSA1 1165.0 Bankfull Width(ft)1 9.0 Floodprone Width(ft)1 >43.9 Bankfull MaxDepth(ft)2 0.9 Low Bank Elevation(ft) 1165.0 Bankfull Cross Sectional Area(ft2)2 3.5 Bankfull Entrenchment Ratio t >4.9 Bankfull Bank Height Ratio t 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 �.i -fit. s�"_ -` _ _ -' .- ',-,� Z Y �" ' .1. i !::.., -' _� • ,tea- ' �t - t..L >_ _ S� Yam:' _. ��. `5+' - - _ 4 , Tc,'ne:w.r.d sue:. „.. ..:ems Upstream Downstream Little Sebastian- Reach MC1-C -Cross Section 5- Riffle -Restoration 1155 1154 1153 1152 1151 ▪ 1150 o w 1149 1148 1147 1146 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 Distance (ft) 3X Vertical �MYO 2021 — — —Approx.Bankfull - —Floodprone Area Low Bank Elevation Exaggeration Cross Section 5 (Riffle) Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSA1 1150.6 Bankfull Width(ft)1 21.3 Floodprone Width(ft)1 >64.9 Bankfull Max Depth(ft)2 3.2 Low Bank Elevation(ft) 1150.6 Bankfull Cross Sectional Area(ft2)2 49.8 Bankfull Entrenchment Ratio i >3.0 Bankfull Bank Height Ratio i 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 1'. i - ' Upstream Downstream Little Sebastian -Reach MC1-C -Cross Section 6 -Pool -Restoration 1153 1152 1151 1150 I1149 1148 1147 1146 1145 1144 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 Distance(ft) MY0 2021 — — —Approx.Bankfull Floodprone Area 3X Vertical Exaggeration Cross Section 6 (Pool) Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSAl 1150.5 Bankfull Width(ft)1 - Floodprone Width(ft)1 - Bankfull MaxDepth(ft)2 4.1 Low Bank Elevation(ft) - Bankfull Cross Sectional Area(ft2)2 56.7 Bankfull Entrenchment Ratio t - Bankfull Bank Height Ratio t - 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 � r Upstream Downstream Little Sebastian -Reach JN3-B -Cross Section 7 -Riffle-Restoration 1162 1161 1160 1159 c 1158 1157 1156 1155 1154 1153 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 Distance(ft) MY0 2021 — — —Approx.Bankfull Floodprone Area Low Bank Elevation 3X Vertical Exaggeration Cross Section 7 (Riffle) Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSA' 1157.4 Bankfull Width(fl)1 15.0 Floodprone Width(ft)i >64.4 Bankfull MaxDepth(ft)2 2.2 Low Bank Elevation(ft) 1157.4 Bankfull Cross Sectional Area(ft2)2 22.8 Bankfull Entrenchment Ratio Bankfull Bank Height Ratio t 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 Little Sebastian - Reach JN3-B -Cross Section 8- Pool -Restoration 1160 1159 1158 1157 c 1156 0 1155 1154 1153 1152 1151 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 Distance(ft) MY0 2021 — — —Approx.Bankfull Floodprone Area 3X Vertical Exaggeration Cross Section 8 (Pool) Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSA 1157.2 Bankfull Width(ft)1 - Floodprone Width(ft)1 - Bankfull MaxDepth(ft)2 3.6 Low Bank Elevation(ft) - Bankfull Cross Sectional Area(ft2)2 34.8 Bankfull EntrenchmentRatiot - Bankfull Bank Height Ratio t - 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 T _ k� y ., 2 .3 •,yy1 - ��',,M {i :. • ,. a4 y r'� `.y. §� x r'* ;...tom4:7—.12`"tf ±�s r ;F ..sc..: * x ,1d Upstream Downstream Little Sebastian - Reach BS1-A -Cross Section 9 -Pool -Restoration 1193 1192 1191 ° 1190 w 1189 1188 1187 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance(ft) MY0 2021 — — —Approx.Bankfull — —Floodprone Area 3X Vertical Exaggeration Cross Section 9 (Pool) Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSA1 1188.3 Bankfull Width(ft)1 - Floodprone Width(ft)1 - Bankfull Max Depth(ft)2 1.0 Low Bank Elevation(ft) - Bankfull Cross Sectional Area(ft2)2 3.6 Bankfull Entrenchment Ratio t - Bankfull Bank Height Ratio t - 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 5 • g ( .N-,. ins ,� �.-;'s,T �M1`si' ,"„� ^� �. 3S $'� . ' "` �'� :'' " - its '". ` fia $ ag .. '* -+:r tom- ,y t i xy • ,_ — -�`� ,7 -:�: ki- ,"' v -a , '` off, ' a+ i ram' � fi '.i +1+ ??�! t °r•�-,..: .fi 4,4 b• _ i S5 -mo w -1`y- Af Upstream Downstream Little Sebastian -Reach BS1-A -Cross Section 10 -Riffle-Restoration 1192 1191 1190 c ° 1189 w 1188 1187 1186 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance(ft) 3X Vertical MY0 2021 — — —Approx.Bankfull Floodprone Area Low Bank Elevation Exaggeration Cross Section 10 (Riffle) Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSA1 1187.6 Bankfull Width(ft)1 6.3 Floodprone Width(ft)1 23.8 BankfullMaxDepth(ft)2 1.1 Low Bank Elevation(ft) 1187.6 Bankfull Cross Sectional Area(ft2)2 4.0 Bankfull Entrenchment Ratio t 3.8 Bankfull Bank Height Ratio t 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 - =fsnls_ +J _ ! qq ,"` ",„ r. 3 .ab �.:. �,ai�',,.g(,Y't`:tm =v- .. ' C yr ? 4 } t, t, . ,01 � -_ .PALS'' * A\ )A ' -A ` . ��d-. _ - --y N CA.. 3ei.�a .,�e ,,&P--.., - ram'" _ y ;,,. .'J` s _0 4 Ate" Upstream Downstream Little Sebastian - Reach BSI-E -Cross Section 11 -Riffle-Restoration 1141 1140 1139 c o 1138 cs w 1137 1136 1135 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance(ft) MY0 2021 — — —Approx.Bankfull Floodprone Area Low Bank Elevation 3X Vertical Exaggeration Cross Section 11 (Riffle) Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation(ft)-Based on AB-XSA1 1136.4 Bankfull Width(ft)i 5.7 Floodprone Width(ft)'2 11.3 BankfullMaxDepth(ft) 0.7 Low Bank Elevation(ft) 1136.4 Bankfull Cross Sectional Area(ft2)2 2.6 Bankfull Entrenchment Ratio i 2.0 Bankfull Bank Height Ratio t 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 '-:.:1r,!"37':.,__"':--'':'*-''.'-',,''.,'':-'-';;1'-..-1,-'-''.-:_-,'A•. '-'-'-' .,--.-.-,7-_-'.-'!''1"-'7''',•.,-,',,-e',',4'.'-. ,. .t* b x,.aY' Sri.,['3 1. - : . =ram T':* y; = - "' cam,. ,< _ . °`-fir '� *w ti i *• a. iliiii: f - ' zs , :. Upstream Downstream Little Sebastian -Reach BSI-E -Cross Section 12 -Pool -Restoration 1140 1139 1138 ° 1137 w 1136 1135 1134 0 MYO 2021 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance(ft) — — —Approx.Bankfull — —Floodprone Area 3X Vertical Exaggeration Cross Section 12 (Pool) Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull IIevation(ft)-Based on AB-ft 1136.1 Bankfull Width(ft)' - Floodprone Width(ft) - BankfullMaxDepth(ft)2 1.2 Low Bank Elevation(ft) Bankfull Cross Sectional Area(ft�)� 4.6 Bankfull Entrenchment Ratio t - Bankfull Bank Height Ratio t - 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 Record Drawings C 1 r PROJECT LOCATIONPres New Hope l,tr ,,,,, }�] Safr�,fork PROJECT LOCATION: (36.396724, 80.858382) - 3600 Glenwood Ave, Suite 100 i I LITTLE SEBASTIAN SITE RECORD DRAWINGS SURRY COUNTY, NORTH CAROLINA Raleigh, N Main: 919.829.9909 at��on www.res.us a Engineering Services Provided By: kg YAD KI N RIVER BASIN . H U C 03040101080020 • EnvironmentalRES Operating Company, LLC License: F-1428 7ep''yr AUGUST 2021 SEAL (if \�\\O\ ti111111/i// .\\ �H CAR0/l" union cross ®�\\\\���OFESS/p+ /'1'q'''% SEAL "c\ /I�uI Pori RESOURCE ENVIRONMENTAL SOLUTIONS LLC ._ 031435� Cross Rands '�, �GINE� ��• g. FG;Y:4r 3600 GLENWOOD AVE, SUITE 100 /,,,,IIIIIIII��`�\e 1�l 3Frr:irs MarshTosanshi RALEIGH, NC 27612 I e. ._ ©2021 Mlcrosof Corporation©2ti211EwTom�c VICINITY MAP hhh NTS F- F di Q N 1- N 0 J o_ ago \sk �r PROJECT DIRECTORY 6,..A;, �• DESIGNED BY: `� 7 Sheet List Table 1 , e ,,, ,,, RESOURCE ENVIRONMENTAL SOLUTIONS, LLC Sheet Number Sheet Title 3600 GLENWOOD AVE, STE 100 --*L)hhL COVES w RALEIGH, NC 276 12 Z ii \� ��' S I RACK JN2B DESIGNED FOR: �, �� �� 0 NC DEPARTMENT OF ENVIRONMENTAL QUALITY 52 REACH JN2D 6 z o 0 DIVISION OF MITIGATION SERVICES N OK R rn 53 LEACH JN3 0 Q o 5 RAVENSCROFT DR., # I 02 �� J1 54 LEACH J N 3 S J N 7 w Lu w w ASHEVILLE, NC 2880I /p, °C °C �?.;�;E ss J rn 55 RACK JN3 $ JN7 SURVEYED BY: 11110111111Ik`R ASCENSION LAND SURVEYING, PC � G� c� �—�� _ 1LL, GIDEON MITIGATION SITE J 56 REACH MC G�/ 3C /T ate-` _is `ter-' � :e 7i I I 6 WILLIAMS ROAD �� . _-,,, �, , ;�, 57 REACH N C3 MOCKSVILLE, NC 27028 3 �,'��C, O - r'* ''' �' -. rn m 58 REACH BS CONSTRUCTION CONTRACTOR: \-p' s6 J ; 59 REACH BS KBS EARTHWORKS, INC. , rn 56 16 coBLE CHURCH RD. ��� �__� , m 5 I 0 REACH BS JULIAN, NC 27283 ��) l'c'E_ ;4 lMONITORING: �� \°�� � c �1 ( rn RESOURCE ENVIRONMENTAL SOLUTIONS, LLC —�� �,,, ,, 's`� 3600 GLENWOOD AVE, STE 100 " �° CE_LCE w `�' = i RALEIGH, NC 276 12 L C E 397 ® LCE rn�W 3C7 * �LC� LCE 3CL �3C, n PROJECT TOPOGRAPHY AND AS-BUILT —rn 29 3C,--/ CONDITIONS PLANIMETRICS SURVEY WAS s7 PROVIDED BY ASCENSION LAND SURVEYING, PC (NC FIRM LICENSE NUMBER C-4288, CHRISTOPHER L. COLE, NC PLS L-5008) LITTLE SEBASTIAN MITIGATION SITE PROJECT NUMBER: ---- PROJECT MANAGER: BPB DMS PROJECT #: 100027 DESIGNED: AFM CONTRACT #: 7 187 SITE MAP DRAWN: TRS USACE ACTION ID #: SAW-20 I 7-0 I 507 NTS CHECKED: RTM RFP #: 16-006993 SHEET NUMBER: J \ J 1 r 1 LEGEND ores PROPOSED CONTOUR MAJOR - 50 REACH JN2 B PROPOSED CONTOUR MINOR — —46— — ENHANCEMENT I AS-BUILT CONTOUR MAJOR 50 3600 Glenwood Ave, Suite 100 AS-BUILT CONTOUR MINOR — —46— — Raleigh, NC 27612 LCE - — _ REACH JN2-C Main: 919.829.9909 ? — ENHANCEMENT II OVERHEAD ELECTRIC UTILITY LINE — 0 — www.res.us / / / / / / / `=X X X Y �c X —t-ef—x x x X X X Y X Engineering Services Provided By: / /// / / / / / / —t x ——---—— PROPERTY LINE — — RES Environmental Operating Company, LLC — X X Y x / / / / / / � X- -x—x—x—x—x FENCELINE —X X X X X— License: F-1428 / / / / / / / �+ , � / / / / / / / / / j //� / / AS BUILT FENCELINE —X X X X X SEAL . -:-i -t-ii\u, / / / / / / / ��i / /�/}� ��} \X\�\� LIMITS OF RECORDED ''.' FESS/p y''' / X E TI N I / i — — �� `/� / ECG / /_� k CONSERVATION EASEMENT LCE eC by i / / / / / �� ��I�/'� /} �� � = SEAL /-- / i r/ /�i / - - - k \k\4- = 031435j r� / / j 7�008� / — j� /,'` \kk PROPOSED BRUSH TOE PROTECTION %, 9 ENGINE-.,���`�j =S '� / 00 >I �i .._._.__\ -+ 00 9+00_ I. ���J V P I 'k\ Ntssi \, (( � _ _ ��j��j } / * ////iiiiiim‘o .110\"-- PROPOSED LOG STRUCTURE 3 )_ T — elm / _ Th �til\ ,` 4.+001-00 \� I 1 / �— \ X SECTION 2 /1�� .- \...._ ,� _ = _ �` \--- ��__ X SECTION I / ��\\\ — +� �- OX , I PROPOSED ROCK STRUCTURE 1111F. -���\��� ��� _ -- —K\ 4 4 zoo"' PROPOSED CONSTRUCTED RIFFLE V�C 0 FULL SCALE: 1 =3 0 30 60;9 1 XxXxx x \ _ Xxxx— X �J 7W��1Xxxx xX k\x /N / i +0 k ( � xxx—XX 2" = FULL SCALE xxX_X_ \� X 1" = HALF SCALE xXxX k A-,,, PROPOSED LOG STRUCTURE xx xXX (PROFILE) 8 XxxXx iii __ —�`� LOG SILL ADDED A-. , 'k-\,� �-x—x X" X DURING CONSTRUCTION 42 " 48" HDPE \x\X�J' PROPOSED ROCK STRUCTURE o 0 x"— INV IN = I 202.30' 1198. I 7' \x 1 (PROFILE) ~O up INV OUT = 120I .40' 1198. 12' \x\ AS-BUILT BRUSH TOE PROTECTION cn AS-BUILT LOG STRUCTURE // Z oC Q O tY LL 0 AS-BUILT ROCK STRUCTURE 4, O lai w 0 1240 1240 w w w CC CC Ct GROUNDWATER MONITORING WELL O STAGE RECORDER 0 U) FLOW GAUGE (D Z 1230 1230 > Q Z MONITORING CROSS SECTION 0 0Et AS-BUILT TOP OF BANK 0 0 Q a� Q U ug ...... ...._ __ __ /-PROPOSED VEGETATION MONITORING PLOT VP# O = COTOP O[ GANK U N 0 1220 1220 z O W Z = d ~ U NOTE: ALL SIGNIFICANT CHANGES FROM Q O o ' - - _ _cc THE DESIGN ARE SHOWN IN RED Z z W z " d Q I: H O +-� 1210 co U w 1210 m CO w r °C AS BUILT AS-BUILT U) r m g CHANNEL BED TOP OF SANK 48" 1DPE o 0 Q J U) ~ Z i- cci I %/i--1 —I CO CC CC 1200 - 1200 0_ o J 00 0 ///.. o PROJECT NUMBER: ---- PROJECT MANAGER: BPB o a) DESIGNED: AFM o_ AS-BUILT DRAWN: TRS cz CHANNEL BED CHECKED: o o°'c SHEET NUMBER: L Lii 4+00 4+50 5+00 5+50 6+00 6+50 7+00 7+50 8+00 8+50 9+00 9+50 10+00 Lu SI z SCALE: HOR I "=30'; VERT I "=6' LT_ J \ I r / N r 1 / / LEGEND / PROPOSED CONTOUR MAJOR - 50 / / res +/ i / / PROPOSED CONTOUR MINOR — —46— — +/ AS-BUILT CONTOUR MAJOR 50 __ REACH J N 2 D 4/ / 3600 Glenwood Ave, Suite 100 x x xx `� ENHANCEMENT I / AS BUILT CONTOUR MINOR — —46— — Raleigh, NC 27612 ��L x x—x—x— 4�V Main: 919.829.9909 / / OVERHEAD ELECTRIC UTILITY LINE — 0 — www.res.us —X—x—x—LC xXx_X / E x—X� /} / PROPERTY LINE — — Engineering Services Provided By: x—X�x� /i RES Environmental Operating Company, LLC � /j FENCELINE —X X X X X— License: F 1428 36" HDPE /+ / �/ INV IN = 1165.70' 1165.E I ' + / AS-BUILT FENCELINE —X X X X X— SEAL INV OUT = 1165. I O' 1165.26' } TREELINE ���i)iiiiiuui / ( vP 2 ��� /v /V - ,5 ) /\ 2s _ / 5+00 ,/�— x— �/ / \ l �� 4 CONSERVATION EASLIMITS OF EMENT LCE 4roitSS/p y9 %; �� � --- y/ �v SECTION 4 = SEAL \ � \i Q 031435k + / / // ' / / I I I �/-� Q/ / PROPOSED BRUSH TOE PROTECTION % .')VGINE�`f i 6t,,,, 9 o � xXXXXXX I / / I OklA VI O �_ — k0 / / ^ \ \ ��_` T: . � ,\ �// PROPOSED LOG STRUCTURE O _ O X-5 CTI O N 3 / \ O, \ , c 1 - /*/../ ) ,�\ �1�;s*;� —,/ PROPOSED ROCK STRUCTURE / �us.� =j�'18 �A. �. �' \ REACH MC I_�'00 X SECTION 4 , # I� '` \ FULL SCALE: 1"=30 x� — \ � \� / \ PROPOSED CONSTRUCTED RIFFLE �� � 30 60 xx— \3\ �� \ Pow R / I 2" = FULL SCALE —— 8 —— —— X-S I \ P E / � 1" = HALF SCALE ——_ \ \ \ \, } i J I PROPOSED LOG STRUCTURE xx�-- 6 (PROFILE) diPROPOSED ROCK STRUCTURE Q 0 N (PROFILE) 0 co i AS-BUILT BRUSH TOE PROTECTION I I I i AS-BUILT LOG STRUCTURE �O Z O ii u_ 0 AS BUILT ROCK STRUCTURE P��'� 0 U) rI I190I 1I I190 CT) 1.11 w 0 CC CC IY I GROUNDWATER MONITORING WELL O STAGE RECORDER 0 U) FLOW GAUGE (D z_ II80 II80 z MONITORING CROSS SECTION 0 0r PROPOSED SG" hDPE Q 0 TOP OF BANK Q i Q a AS-BUILT r2 0 ug TOP OF BANK VEGETATION MONITORING PLOT VP# O = 0 N O 1170 1170 z w — iNrii - LJJ V _ 1 = a _ _ U o - , NOTE: ALL SIGNIFICANT CHANGES FROM Q 0 — THE DESIGN ARE SHOWN IN RED z cc z LLI wo AS-BUILT " \ \ cc CHANNEL BED �� Q z — Cr) 0 P m 1 1 60 II60 U Q co PROPOSED _wD CHANNEL BED I W cc co r o I Q J U) ~ Z I— IF 0 .� w H z CO(1) —Ic Q 1150 1150 0_ o J 00 O O o PROJECT NUMBER: ---- o PROJECT MANAGER: BPB aa)) DESIGNED: AFM o TRS o_ DRAWN: CHECKED: RTM as co cc SHEET NUMBER: Lii 15+00 15+50 16+00 16+50 1 7+00 1 7+50 18+00 18+50 19+00 19+50 20+00 20+50 2 I +00 S2w SCALE: HOR 1 "=30'; VERT I "=6' L J \ I r 1 r LEGEND REAL h J N 3 00 \� PROPOSED CONTOUR MAJOR - 50Pres RESTORATION + - / PROPOSED CONTOUR MINOR — —46— — , , , LL, // AS-BUILT CONTOUR MAJOR 50 3600 Glenwood Ave, Suite 100 / / 2.. co / / AS-BUILT CONTOUR MINOR — —46— — Raleigh, NC27612 /_ -�x�x�_ / / U / OVERHEAD ELECTRIC UTILITY LINE — — Maiww�res us909 '— / �� _ / / / PROPERTY LINE — — Engineering Services Provided By: / / , RES Environmental Operating Company, LLC //7 FENCELINE —X X X X X License: F-1428 --xx-x- \/ / / ---� U , " AS BUILT FENCELINE —X X X X X— SEAL �� � / � ��� , • 7 99 „ TREELINE / ;//' \\\ / LIMITS OF RECORDED ``��yci-E.SS/04/X�I _T- 77-----/7- \ Q A4 / CONSERVATION EASEMENT LCE Si- �� \ Q / = SEAL 031435 Wit / j#/,d/ 7 / \ f / PROPOSED BRUSH TOE PROTECTION FNGINEc� 1 • 7 F /� � / � _ _ _ - - / o �, L�� // _ae-� O �/ � / �� TB--------_ _ A / / / X _ ,P PROPOSED LOG STRUCTURE ____-7 — — TR2+00 /= ��� �� �V....... _____ ../p ( ,A ""'��,.1 �� fir tG _ __ _ .e..-T3-2-__- --=:-_-_-__----:-_-----_-;__- .--____p -----' _ _ _ — BB — — —e� —� / �: .t �� i , •_.... L , tiik ) // 00 0 / PROPOSED ROCK STRUCTURE tl NIP°X�� � ' / � �sl — ate ��:i �� � 1�� _�/7 �/�/'/ _ xv ) I I — � ��x s Zj FULL SCALE: 1"=30 7 _� �` - PROPOSED CONSTRUCTED RIFFLE )o2 0 30 60 �� e, /j /may I ,, — o ti\\_ — _ _ x� '-� --_= ice- 99 / / / x�-.' \ \ ,— 2' FULL SCALE J \ \M- _ _ 1" = HALF SCALE — \ \ PROPOSED LOG STRUCTURE xa � \ O \ 8 (PROFILE) _ lit x- PROPOSED ROCK STRUCTURE Q N OHE (PROFILE) N OHE O co OHE o_ o OH E OHE AS-BUILT BRUSH TOE PROTECTION -� OHE RELOCATED ONE UTILITY IHE 0 OHE ,:,, Z AS-BUILT LOG STRUCTURE /O oC Q O tY LL 0 AS-BUILT ROCK STRUCTURE '�*IP O U) IP C w 1175 1175 w w w GROUNDWATER MONITORING WELL O STAGE RECORDER 0 (/) FLOW GAUGE 0i z_ I 1170 I 1170 > z Z MONITORING CROSS SECTION * * < J AS-BUILT 0 0 TOP OF BANK 0 PROPOSED U ,i TOP OF BANK VEGETATION MONITORING PLOT >- VP# U CO coW Z 0 IIG5 1165 O - I Z U a �- — — - NOTE: ALL SIGNIFICANT CHANGES FROM F- W 0 - • THE DESIGN ARE SHOWN IN RED z z 0 cc w Q 0 P CO m , ' I I GO 116o n � U m CO in r2 I\ m \ i� � r — \ _ 2 w D J AS-DUI LT J CHANNEL BED Z J I— PROPOSED H w ~ w CHANNEL BED 0 J Q CC w 1155 1155 0_ 0 J J O O o PROJECT NUMBER: ---- o PROJECT MANAGER: BPB 8DESIGNED: AFM .o TRS o_ DRAWN: ro CHECKED: RTM 0 o°'c SHEET NUMBER: 6E di 0+00 0+50 I +00 I +50 2+00 2+50 3+00 3+50 4+00 4+50 5+00 5+50 6+00 zS3 J SCALE: hOR I "=30'; VERT I "=3' L J \ J I. / / \\\\C\\ v7 \ \ N N_ _ _ //� 1 r / / \\ �\ \ N \ _ / / LEGEND ores , , \ PROPOSED CONTOUR MAJOR - 50 .13:1 / N , / / \ \ \�\ / REAL I1 J N 7 _ �� / �x-��c� -� 1 III / RESTORATION / PROPOSED CONTOUR MINOR — —4C— — ff — / \�II I\I I / (SEE S5 FOR PROFILE) �" DOUBLE GO" HDPE AS-BUILT CONTOUR MAJOR 50 , / Im I CHANNEL ADDED BETWEEN — — ,, 3600 Glenwood Ave, Suite 100 �' �O / FINAL MITIGATION PLAN INV IN ( I ) = 1150.25 1150.54 — Raleigh, NC27612 I +' INV OUT ( I ) = 1150.00' 1150.25' t-* AS-BUILT CONTOUR MINOR — —46— / — I _ AND CONSTRUCTION — INV IN (2) = 1150.25' 1150.50' ��' Main: 919.829.9909 OVERHEAD ELECTRIC UTILITY LINE — www.res.us / O Xx�. W / / INV OUT (2) = 1 1 50.00' 1 1 50.33' t)' — I 1 / `max xI/ -- x } I PROPERTY LINE - - Engineering Services Provided By: 'I I \ — t I RES Environmental Operating Company, LLC //� / FENCELINE —X X X X X— License: F-1428 .....id, / \ \ .\ -EeE�,� � -e� / IIAS BUILT FENCELINE —X X X X X— SEAL 1/ l J 4) \ I I / / / / TREELINE— O� / — 1 � �� / Ilt �\\•\���H CARp��,,% X �� "- / /' LIMITS OF RECORDED �.��4 FESS-6 1'., �,; \ , /�` k/ }/'` / / CONSERVATION EASEMENT LCE �4 by c\Ak .i _ _ SEAL \ �� X / / / .4 / \/„_ 3 / / = 031435 �� / <`o°. ° � \ ,-0 X-SECTION 7/6 /\ Ig. 1/4-il 0 y -\ /T-6`,/- is \ ' 0 / K' / i�� -----it"-- - PROPOSED BRUSH TOE PROTECTION --' c�'N �� g$�� �\ I 4r°4(tr / \ t / \\ C� 0 / / /\ 0 / \/ 12 / �� �\ '///'/� F. MU\'\'`���Zqi — ��• • ,,4ie'. \� \\�� / l'r '`s"" �� !�'.i - - TC ���" /�,//111111111AA��� �►�J �9�1�� 1. 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