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HomeMy WebLinkAbout20171158 Ver 1_WarrenWilson_100019_MY3_2022_20230303FINAL MONITORING REPORT (MY3) WARREN WILSON COLLEGE STREAM MITIGATION SITE Buncombe County, North Carolina NCDMS Project ID No. 100019 Full Delivery Contract No. 7188 USACE Action ID No. SAW-2017-01557 NCDWR No. 20171158 RFP No. 16-006991 (Issued: 9/16/16) French Broad River Basin Cataloging Unit 06010105 Data Collection: January - October 2022 Submission: February 2023 Prepared for: NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF MITIGATION SERVICES 1652 MAIL SERVICE CENTER RALEIGH, NORTH CAROLINA 27699-1652 Restoration Systems, LLC 1101 Haynes St. Suite 211 Raleigh, North Carolina Ph: (919) 755-9490 Fx: (919) 755-9492 Response to Monitoring Year 3 (2022) DMS Comments Warren Wilson College Stream Restoration Site French Broad River Basin — CU# 06010105— Buncombe County DMS Project ID No. 100019 Contract # 7188 Comments Received (Black Text) & Responses (13.1.g..e Fe.x� General: 1. DMS notes from the April 20, 2022 IRT credit release meeting are as follows: The IRT noted that four vegetation plots did not meet the vegetation success criteria. The IRT noted that vegetation plot 25 showed some higher -than -normal tree mortality. Restoration Systems (RS) reported that vegetation plot 11 likely failed as it is located in a wet area. The IRT recommended adding some wet tolerant species if supplemental planting is completed on the site. The IRT also asked that RS look at vegetation diversity and address it accordingly if a supplemental planting effort is planned for the site in the future. Response: Understood RS requests a .site visit with the IRT in early 2023 to discuss this area and .several other topics rioted in the 2022 IRT credit release meeting notes; wetland monitoring, vegetation development, and invasive .species treatments. Invasives on the site were discussed. The IRT asked about the Parrot Feather reported on the site. The Parrot Feather was located on UT3 near VP 8 and will be treated through project closeout. Erin Davis (DWR) recommended that Parrot Feather be called out in the CCPV maps in future monitoring reports. Response: Parrot feather and other areas of inva.sive.s .species concern are depicted on this year's CCPV. Kim Isenhour (USACE) noted that the growing season should remain consistent per the IRT approved mitigation plan. Response: Tire MY3 2022 growing .season is consistent with the approved mitigation plan, and is based on the INRCS growing .season of April 2 to (November 1. RS requested that wetland gauge monitoring stop on the site as the wetland wells have been successful with no wetland credits being generated as part of the project. The IRT asked for additional wetland gauge monitoring in MY3(2022) and then a request from RS that wetland gauge monitoring stop at the 2023 credit release meeting. Response: 'To be discussed during the credit release meeting PLEASE SEE PRE CONSTRUCTION WETLAND GAUGE DATA VS POST CONSTRUCTION GAUGE DATA ANALYSIS (TABLE 19, APPENDIX F). The IRT asked about fescue treatment during construction and requested potential fescue ring sprays on the site. RS noted that they utilized sod mats during construction that included fescue. RS does not believe these areas of fescue are an issue on the site. Response: Fhough present, RS .still does riot believe fescue is a concern currently or moving forward. Kim Isenhour (USACE) asked that a note be added in future monitoring reports noting that all failed equipment has been repaired on the site. Response: Understood. Kim Isenhour (USACE) asked about River Cane on the site. RS noted that the River Cane is doing well and is successful on the tributaries that flow into the Swannanoa river. The IRT asked for drone footage in the River Cane area/s (if possible) with the MY3(2022) submittal. The IRT indicated that they would like to see the site later in 2022 (if possible) but noted that credit could be released as proposed for MY2 (2021). Response: We apologize that photos of River Cane did riot mal<e it into the MY3 Photo Log RS will acquire photos before the credit release meeting and will be prepared to .show them at that time. 1101 Haynes St., Suite 211 • Raleigh, NC 27604 • www.restorationsystems.com • Ph 919.755.9490 • Fx 919.755.9492 Please review the notes and confirm that all the requests, IRT questions and full delivery provider commitments from the 2022 credit release meeting have been addressed and included in the final MY3 (2022) report. Response: IRS has responded and updated the report as necessary. Please ensure that project monitoring equipment is checked prior to the start of the growing season and at least quarterly thereafter to confirm that it is functioning properly and collecting data through the full growing season/ monitoring year. Response: All monitoring equipment will be checked for functionality before the growing .season and Periodically throughout the growing .season. Report 3. Section 1.2 Project Background: "The Warren Wilson College Stream Mitigation Site (hereafter referred to as the "Site") encompasses a 25.3-acre easement (pending easement modification) along cold -water, unnamed tributaries (UTs) to the Swannanoa River." The easement modification was completed and recorded in 2021. Please review, QA/QC and update the report text accordingly. Response: Tire document was updated to remove all mention of the "pending easement modification." 4. Section 1.2 Project Background: "Results of preconstruction gauge data, included in Table 12 (Appendix F)". This should be updated to Table 18. Please review, QA/QC and update the report text accordingly. Response: Tire reference to precon.struction gauge data was updated to Fable 18 (Appendix F). Section 1.3 Project Components and Structure: "The log sill was constructed as designed and is holding grade. These changes are depicted on the Asbuilt Plan Sheets (Appendix E)." Asbuilt Plan Sheets are not available in Appendix E in the MY3 (2022) report. Additionally, it is not necessary to discuss construction deviations in MY3. The MY3 report can reference the project's final MYO/ Record Drawing report which is available on the DMS website. Please review, QA/QC and update the report accordingly. Response: Tire discussion of construction deviations was removed from Section 1.3. 6. Section 1.4 Success Criteria & Section 2.1 Monitoring: Please also reference the project's final IRT approved mitigation plan as it is the document that established the project's final success criteria. Please confirm that the success criteria reported in the MY3 (2022) report is the same as the IRT approved mitigation plan. Response: References to the IRT-approved detailed mitigation plan were added to .sections 1.4 and 2.1. Tire success criteria detailed in the MY3 (2022) are the .same as those established in the mitigation plan. 7. Section 2.1 Monitoring: In the report text, please discuss any project maintenance activities (invasive treatment, supplemental planting, beaver removal, etc.) that took place in MY3 (2022). As an example, CCPV Sheet 21 indicates; Parrot feather observed along reach. Spot treatment occurred throughout the year and will continue as needed. This and additional invasive treatment and maintenance activities should be discussed in the report text. Response: A discussion of the 2022 invasive treatments was added to the "Vegetation Summary" in Section 2.1. Fhe.se were the only .site maintenance activities that took place during MY3 (2022). Section 2.1 Monitoring — Wetland Summary: Per IRT comments during the 2022 IRT Credit Release meeting, DMS recommends using the Buncombe County soil survey start/end dates for the remainder of wetland monitoring conducted on the site. DMS understands that IRS will request termination of the groundwater well monitoring at the 2023 IRT credit release meeting. Response: Noted. If wetland hydrology monitoring continues through the 2023 growing .season, the Buncombe County .soil survey .start/end dates will be used to determine growing .season. Section 2.1 Monitoring —Vegetation Summary: Please also discuss the five (5) random vegetation plots installed on the site and summarize the results in the report text. Response: A discussion of the five Vegetation tran.sects was added to the "Vegetation Summary" in Section 2.1. Page 2 of 4 10. Section 2.1 yWonhohng—Vegetution Summary: Bused on the yWY3 (2022) fixed and random plot results, is any supplemental planting warranted or planned in yWY4 (2023). Please discuss and update the report text accordingly. |nthe report text, please also discuss the MY3 status of the rivercane planted/ transplanted as part of project implementation. Response: Current|y, IRS is not planning additional planting. Vegetation plots 1, 5, 11, and did not meet success criteria in 2022. However-, plots 1 and 5 easily meet success criteria when taking natural recruits into consideration. A temporary transect was clone adjacent to plot 11 and met success criteria with 4415 stems/acre. Plot 11 is in awetland area adjacent toGauge 8that was meeting wetland success for 1O1consecutive days, vvhich|ibe|ycausedthemorta|ityofsevem||essvvet-to|erantspecies.Hovvever-,R5doesnotbe|ievethistobea negative and believe the habitat within the area ofplot 11 isappropriate. This is an area IRS wishes todiscuss with the |RTinthe field. Both plots 11 and 215 had no mortality between year 2 (2021) and year 3 (2022). 11. Table 1—Mitigation Assets and Components: The project credits in the summary portion of the table are in the "Riparian Wetland" column. Please review, QA/QC and update the table accordingly. Response: Fhe cold water column was moved under the "Stream" section of the table. 12. Table Project Activity and Reporting History: Please include all project maintenance activities (invasive treatment, supplemental planting, beaver removal, etc.) inthe table. Response: Fable 2 was updated to include all project maintenance activities. 13. Table Nmuu| Stream Morphology Stability Assessment: Please confirm that the project streams, banks and engineered structures are 100% stable and 100%preforming usintended usreported inthe Table 5. Response: INo areas of concern were observed cluring MY3 monitoring, and all streams, banks, and engineered structures are 1OOY6stable and performing asintended. 14. Table 7. Planted Bum Root Woody Vegetation: Please include the species common name and the wetland indicator status for the species inthe planted species list. Response: Common names and indicator statuses were added toFable 7. 15. Cross Section (Warren Wilson, UT1,XS 7,Poo|):Please review and include highlighted survey & points for yWY3 (2O22). Response: Fhe MY3 cross section data line and points were added to the U F 1 XS-7 plot. 16 Table 16 Verification of BunkfuU Events: Please include an additional column noting the monitoring year associated with the reported bunkfuUevent. Response: Acolumn was added totable 16 indicatingthe monitoring year during which each bankfb|| event occurred. 17. AppendixG—Site Photo Log: In the photo captions, please provide dates that the photos were taken. DyWS recommends including the photo locations on the CCPV map or a separate map in Appendix G. Response: The crossing photos are the only permanent photo points other than cross-section and vegetation plot photos. A shapefile was created to show their locations on the CCPV. Fhe 4 additional photos in the photo log were meant to provide general over -view ofsite vegetation and easement boundaryconditions. The quantity and location of additional photos will likely change from year to year-, and therefore, their locations were riot added to the CCPV. Additionally, dates have been added to all photo captions in the photo log. Digital Support File Comments: Dl No photo points were indicated on the [CPV map and no photos were submitted in the digital support files. Please verify that no photo points are required per the IRT approved mitigation plan. Response: The only photo points required by the |RTappnoved mitigation plan are at cross -sections and vegetation plots, which were included in the digital submittal. However-, the IRF recently requested that photos betaken upstream and downstream ofeach piped/bridged crossing aspartofannua|monhohng.Thosephoto points have been included inthe digital submittal aswell. 19. The digital data submission ismissing the following components: u. Asset Table — There was no asset table in the digital submission. Please include it in the final digital Response: An excel file containing Fables 1-4 was added to the digital submittal. b. Project Activity Table There was no project activity table in the digital submission. Please include it in the final digital submittal. Response: An excel file containing Fables 1-4 was added to the digital submittal. Two polygons were indicated as invasive problem areas in the CCPV and in the visual vegetationueesament table; novegetation prob|emumapo|ygonswenesubmitted.P|eusesubmitthepolygonsinthefinu|digita| Response: A shapefile for the MY3 invasive species polygons was added to the digital submittal. WWC Year 3, 2022 Monitoring Summary General Notes • No encroachment was identified in Year 3. • No evidence of nuisance animal activity (i.e., beaver, heavy deer browsing, etc.) was observed. Streams • Stream monitoring show that all stream channels and structures are stable. • Stream Monitoring gauges malfunctioned in 2022. These gauges will be replaced and, in a manner, consistent with the standard stream gauge installation typically provided by DMS and the USACE to Restoration Systems — See Exhibit A, Methods 1— 3 for installation of a pressure transducers for stream restoration below immediately following this monitoring summary. Wetlands • Wetland hydrology has improved from preconstruction and year 1 (2020) conditions. All gauges were saturated/inundated for greater than 10 percent of the year 3 (2022) growing season, with gauges 2-7 and 9 being inundated for approximately 90% of the growing season (Table 17A-B, Appendix Q. No wetland mitigation credit is being generated. • At the April 2022 DMS/IRT monitoring review meeting, it was discussed that upon favorable MY3 (2022) monitoring data, wetland monitoring associated with UT-3 may be ended. RS will continue to plan for monitoring wetlands in 2023 but is requesting termination of this monitoring effort. Vegetation • Measurements of the 25 permanent vegetation plots resulted in an average of 539 stems/acre excluding livestakes. All plots met success criteria except plots 1, 5, 11, and 25 (Tables 8-10, Appendix C). Vegetation plots 1, 5, 11, and did not meet success criteria in 2022. However, plots 1 and 5 easily meet success criteria when taking natural recruits into consideration. A temporary transect was done adjacent to plot 11 and met success criteria with 445 stems/acre. • Plot 11 is in a wetland area adjacent to Gauge 8 that was meeting wetland success for 101 consecutive days, which likely caused the mortality of several less wet -tolerant species. However, RS does not believe this to be a negative, and believe the habitat within the area of plot 11 is appropriate. This is an area RS wishes to discuss with the IRT in the field. • Both plots 11 and 25 had no mortality between year 2 (2021) and year 3 (2022). • Year 3 (2022) vegetation measurements also included 5 random sampling transects. Measurements of all 30 plots resulted in a sitewide average of 525 planted stems/acre excluding livestakes. MY3 Monitoring Report (Project No. 100019) Executive Summary Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Site Maintenance Report (2022) Invasive Species Work Maintenance work 06/27/2022 — 06/28-2022 Parrot Feather, Multiflora rose, Privet, Chinese Bittersweet, Cattail, Johnson Grass, Air Potato, Japanese Knotweed N/A 09/15/2022 Chinese Bittersweet, Air Potato, Multiflora rose, Parrot feather, Privet, Cattail Site Permitting/Monitoring Activity and Reporting History Activity or Deliverable Data Collection Complete Completion or Delivery RFP No. 16-006991 Issuance Date -- September 16, 2016 RFP No. 16-006991 Opening Date -- February 15, 2017 Institution Date (NCDMS Contract No. 100014) -- May 22, 2017 Mitigation Plan March 2018 November 2018 Construction Plans -- January 10, 2020 404 Permit -- May 13, 2019 Site Construction -- March 4, 2020 Planting -- March 16, 2020 As -built Baseline Monitoring (MYO) January -March 2020 August 2020 Treatment of Kudzu, Rose, Privet, Honeysuckle, English Ivy -- July 27, 2020 Treatment of Kudzu, Princess Tree, Privet, Rose, Japanese Bittersweet, Honeysuckle -- October 8, 2020 Annual Monitoring (MY1) November 2020 January 2021 Treatment of Japanese Bittersweet, Parrot Feather, Privet, Multiflora Rose, Cattail, Air Potato, Honeysuckle, Japanese Knotweed, English Ivy -- May 24-27, 2022 & September 29 to October 1, 2022 Annual Monitoring (MY2) October 2021 December 2021 Treatment of Parrot Feather, Multiflora rose, Privet, Chinese Bittersweet, Cattail, Johnson Grass, Air Potato, Japanese Knotweed -- June 27-28, 2022 Treatment of Chinese Bittersweet, Air Potato, Multiflora rose, Parrot feather, Privet, Cattail -- September 15, 2022 Annual Monitoring (MY3) October 2022 February 2023 MY3 Monitoring Report (Project No. 100019) Executive Summary Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 BRAIDED FISHING LINE ATTACHING TOP OF PRESSURE TRANSDUCER TO BOTTOM OF LOCKING CAP SLOTTED 2" PVC PIPE LOCKING CAP 1/4 INCH VENT HOLE SOLID 2" PVC PIPE MFTHnn 1 METHOD 2 PVC CAP LOCKING CAP SLOTTED 2" PVC PIPE BRAIDED FISHING LINE ATTACHING TOP OF PRESSURE TRANSDUCER TO BOTTOM OF LOCKING CAP 1/2" STEEL REBAR LOCKING CAP 1/4 INCH VENT HOLE STAINLESS STEEL HOSE CLAMPS SOLID 2" PVC PIPE HEAVY DUTY 6' OR LONGER STEEL T-POST METHOD 3 BRAIDED FISHING LINE ATTACHING TOP OF PRESSURE TRANSDUCER TO BOTTOM OF LOCKING CAP SLOTTED 2" PVC PIPE FINAL MONITORING REPORT (MY3) WARREN WILSON COLLEGE STREAM MITIGATION SITE Buncombe County, North Carolina NCDMS Project ID No. 100019 Full Delivery Contract No. 7188 USACE Action ID No. SAW-2017-01557 NCDWR No. 20171158 RFP No. 16-006991 (Issued: 9/16/16) French Broad River Basin Cataloging Unit 06010105 Data Collection: January - October 2022 Submission: February 2023 Prepared for: NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF MITIGATION SERVICES 1652 MAIL SERVICE CENTER RALEIGH, NORTH CAROLINA 27699-1652 Restoration Systems, LLC 1101 Haynes Street, Suite 211 Raleigh, North Carolina 27604 Contact: Worth Creech 919-755-9490 (phone) 919-755-9492 (fax) r Prepared by: Aziaorn Erbwrrjnrm�ntal, no. Axiom Environmental, Inc. 218 Snow Avenue Raleigh, North Carolina 27603 Contact: Grant Lewis 919-215-1693 (phone) TABLE OF CONTENTS 1.0 PROJECT SUMMARY....................................................................................................................2 1.1 Project Goals & Objectives................................................................................................................ 2 1.2 Project Background............................................................................................................................4 1.3 Project Components and Structure...................................................................................................5 1.4 Success Criteria.................................................................................................................................. 5 2.0 METHODS....................................................................................................................................6 2.1 Monitoring..........................................................................................................................................7 3.0 REFERENCES..............................................................................................................................10 APPENDICES Appendix A. Background Map and Tables Figure 1. Project Location Table 1. Project Components and Mitigation Units Table 2. Project Activity and Reporting History Table 3. Project Contacts Table Table 4. Project Attributes Table Appendix B. Visual Assessment Data Figures 2 & 2A-2E. Current Conditions Plan View Tables 5A-5G. Visual Stream Morphology Stability Assessment Table 6. Vegetation Condition Assessment Vegetation Plot Photographs Appendix C. Vegetation Data Table 7. Planted Bare Root Woody Vegetation Table 8. Total Stems by Plot and Species Table 9. Temporary Vegetation Plot Data Table 10. Planted Vegetation Totals MV3 Monitoring Report (Project No. 100019) Warren Wilson College Stream Restoration Site Buncombe County, North Carolina Appendix D. Stream Geomorphology Data Tables 11A-I. Baseline Stream Data Summary Tables 12A-I. Baseline Stream Data Summary (Substrate, Bed, Bank, and Hydrologic Containment Parameter Distributions) Tables 13A-I. Monitoring Data -Dimensional Morphology Summary (Dimensional Parameters -Cross - sections) Tables 14A-I. Monitoring Data -Stream Reach Data Summary Cross-section Plots Appendix E. Hydrology Data Tables 15A-C. Channel Evidence Table 16. Verification of Bankfull Events Table 17A-B. Groundwater Hydrology Data Groundwater Gauge Graphs Figure E-1. Year 3 (2022) Soil Temperature Data Appendix F. Preconstruction Wetland Hydrology Data Figure 3. Preconstruction Gauge Locations Table 18. Preconstruction Groundwater Gauge Data Summary Table 19. Preconstruction vs Postconstruction Gauge Analysis Appendix G. Site Photo Log page 1 Restoration Systems, LLC February 2023 1.0 PROJECT SUMMARY Restoration Systems, LLC (RS) has established the North Carolina Division of Mitigation Services (NCDMS) Warren Wilson College Stream Restoration Site (Site). 1.1 Project Goals & Objectives Stressors documented in the French Broad River Basin Restoration Priorities (RBRP) report (NCEEP 2009) include habitat degradation, poor riparian buffers, nutrient enrichment, channelization, sedimentation, and toxicity primarily attributed to urban and residential runoff and development. Within the Site, stressors prior to construction could further be attributed to soil instability, increased runoff, and water quality impairments in the receiving watersheds. The project is not located in a Regional or Local Watershed Planning Area; however, the RBRP goals outlined below are addressed by project activities as follows (Site -specific information follows each RBRP goal in parentheses). 1. Reduce sediment inputs (based on the sediment model, Site construction eliminates approximately 228 tons per year [tons/year] of sediment that resulted from streambank erosion, excessive fines from channel straightening, channel incision, lack of cobble substrate in disturbed reaches, and a narrow or absent riparian buffer) 2. Reduce nutrient inputs (based on the nutrient model, Site construction eliminates 657.4 pounds per year [Ibs/yr] of nitrogen and 54.5 Ibs/yr of phosphorus due to the installation of marsh treatment areas, removal of preconstruction land uses and livestock, and elimination of fertilizer application) 3. Restore riparian buffers (removal of preconstruction land uses and livestock, control of invasive species, and approximately 19.6 acres of woody riparian buffers were planted adjacent to streams) 4. Stabilize streambanks (restored stable channels at the historic floodplain elevation, and enhanced oversized and incised channels by raising the stream invert and using grade control/habitat structures) 5. Restore and/or protect aquatic habitat (restored aquatic habitat in restoration and enhancement [Level 1] reaches by installing grade control/habitat structures, coarsening channel bed materials, removing nutrient inputs, and planting woody riparian buffers to provide shade and organic matter to streams) 6. Reduce fecal coliform inputs (based on the nutrient model, Site construction eliminates 31.2 x 1011 colonies [col] of fecal coliform per day by removing preconstruction land uses and livestock and treating agricultural runoff with marsh treatment areas) 7. Implement agricultural best management practices (BMPs) (the easement is fenced to eliminated livestock from accessing the easement and marsh treatment areas were installed). Site specific mitigation goals and objectives were developed through the use of North Carolina Stream Assessment Method (NC SAM) analyses of preconstruction and reference stream systems at the Site (NC SFAT 2015) (see Table 1). MV3 Monitoring Report (Project No. 100019) page 2 Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Stream/Wetland Targeted Functions, Goals, and Objectives Targeted Functions Goals Objectives Compatibility of Success Criteria (1) HYDROLOGY (2) Flood Flow 0 Construct new channel at historic e Attenuate flood (Floodplain Access) flow across the floodplain elevation to restore • BHR not to exceed 1.2 (3) Streamside Area overbank flows and enhance existing • Document four overbank Site. Attenuation • Minimize • jurisdictional wetlands Plant woody riparian buffer events in separate monitoring years (4) Floodplain Access downstream 0 Remove livestock and cease • Livestock excluded from the (4) Wooded Riparian flooding to the Buffer maximum agricultural practices within areas protected by the conservation • easement Attain Wetland Hydrology extent possible. easement. Success Criteria • Connect • Deep rip floodplain soils to reduce • Attain Vegetation Success streams to (4) Microtopography compaction and increase soil surface Criteria functioning roughness • Conservation Easement wetland . Protect riparian buffers with a recorded systems. perpetual conservation easement (3) Stream Stability • Increase stream • Construct channels with proper pattern, dimension, longitudinal profile, and substrate • Cross-section measurements and visual assessments indicate stable channels and (4) Channel Stability 4 () Sediment Transport p stability within the Site so that channels are • Remove livestock and cease agricultural practices within areas protected by the • • structures BHR not to exceed 1.2 ER of 1.4 or greater 4 Thermore ulation () g conservation easement. neither e < 10% change in BHR and ER e Construct stable channels with gravel (4) Stream aggrading nor • Livestock excluded from the substrate Geomorphology degrading. • Stabilize streambanks easement • Attain Vegetation Success • Plant woody riparian buffer Criteria (1) WATER QUALITY (2) Streamside Area • Remove livestock and reduce Vegetation • Remove direct • agricultural land/inputs Install marsh treatment areas (3) Upland Pollutant Filtration nutrient and pollutant inputs • • Plant woody riparian buffer Enhance jurisdictional wetlands adjacent • Livestock excluded from the from the Site to Site streams easement and reduce • Provide surface roughness and reduce • Attain Vegetation Success (2) Indicators of contributions to compaction through deep Criteria Stressors downstream ripping/plowing waters. • Restore overbank flooding by constructing channels at historic floodplain elevation MV3 Monitoring Report (Project No. 100019) page 3 Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Stream/Wetland Tareeted Functions. Goals. and Obiectives (Continued) (1) HABITAT (2) In -stream Habitat • Construct stable channels with gravel substrate • Plant woody riparian buffer to provide organic matter and shade • Cross-section measurements (3) Substrate (3) Stream Stability (3) In -Stream Habitat • Construct new channel at historic and visual assessments (2) Stream -side . Improve floodplain elevation to restore overbank indicate stable channels and Habitat instream and flows structures. (3) Stream -side stream -side • Protect riparian buffers with a perpetual • Attain Vegetation Success Habitat habitat. conservation easement Criteria • Enhance jurisdictional wetlands adjacent • Conservation Easement to Site streams recorded (3) Thermoregulation • Remove invasive plant species • Add large woody debris to Site channels 1.2 Project Background The Warren Wilson College Stream Mitigation Site (hereafter referred to as the "Site") encompasses a 25.3-acre easement along cold -water, unnamed tributaries (UTs) to the Swannanoa River. Warren Wilson College occupies approximately 1200 acres, and the Site is part of an actively managed farm and forest system on the Warren Wilson College property that includes livestock management areas, pastureland, agricultural row crops, and a sustainably managed forest. The Site is located approximately 2 miles west of Swannanoa and 5 miles east of Asheville in Buncombe County, North Carolina (Figure 1, Appendix A). Prior to construction, the Site consisted of agricultural and managed forest land accessible to livestock. Site streams were part of an actively managed farm and forest system that included livestock, pastureland, agricultural row crops, and sustainable forest management. Streams were eroded vertically and laterally, received extensive sediment and nutrient inputs, and were dredged and straightened and/or rerouted to the floodplain edge. Preconstruction Site conditions resulted in degraded water quality, a loss of aquatic habitat, reduced nutrient and sediment retention, and unstable channel characteristics (loss of horizontal flow vectors that maintain pools and an increase in erosive forces to channel bed and banks). Site restoration activities restored riffle -pool morphology, aided in energy dissipation, increased aquatic habitat, stabilized channel banks, and greatly reduced sediment loss from channel banks. Preconstruction Groundwater Gauges: Preconstruction groundwater gauges were installed along UT-3 upper (Clingman's) upon the request of IRT members to model pre -construction wetland characteristics. Data was collected for 2018 and the beginning of 2019 within gauges nested in transects perpendicular to the existing channel. In addition, a crest gauge along the existing incised reach was installed to measure overbank events. Results of preconstruction gauge data, included in Table 18 (Appendix F), indicate that gauges near the incised stream showed reduced hydroperiod as compared to those further from the channel. 2018 exhibited normal rainfall patterns, and one gauge appeared to meet jurisdictional criteria based on groundwater level being within 12 inches of the surface for 12.5% of the growing season (26 days, based MV3 Monitoring Report (Project No. 100019) page 4 Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 on the MRCS growing season of April 2 to November 1). 2019 exhibited wetter than average rainfall patterns, and six gauges appeared to meet the same jurisdictional criteria. In addition, the crest gauge installed on UT-3 showed no overbank events during 2018 and one during 2019 after a 4.56-inch rainfall. 1.3 Project Components and Structure Proposed Site restoration activities generated 10,050.933 Stream Mitigation Units (SMUs) as the result of the following. • Restored 9220 linear feet of perennial stream channel by constructing stable streams in the historic floodplain location and elevation. • Enhanced (Level 1) 62 linear feet of stream by installing in -stream structures, providing proper channel dimension and appropriate floodplain width, reducing shear on eroding banks, controlling invasive species within the riparian area, and planting with native riparian vegetation. • Enhanced (Level 11) 1974 linear feet of stream channel by removing current land use practices, controlling invasive species within the riparian area, and planting native vegetation. Additional activities that occurred at the Site included the following. • Installation of four marsh treatment areas to treat stormwater runoff before it enters Site streams. • Established a minimum 30-foot-wide woody riparian buffer adjacent to Site streams, • Fenced the conservation easement boundaries in areas used for livestock management. • Protected the Site in perpetuity with a conservation easement. During the initial DMS as -built review, it was discovered that several culvert pipes extend into the recorded conservation easement. Once the encroachments were located and documented via GPS, easement modifications were initiated to remove any crossing materials from the conservation easement. Creditable stream removed from the easement were also removed from mitigation assets. A mitigation plan addendum for the reduction in project credit was submitted to the IRT as part of the MYO/ As -Built Baseline Monitoring Report review and was approved by the IRT via email on October 5, 2020. Site design was completed on January 10, 2020. Construction started on September 1, 2019 and ended within a final walkthrough on March 4, 2020. Site planting was completed on March 16, 2020. Completed project activities, reporting history, completion dates, project contacts, and background information are summarized in Tables 1-4 (Appendix A). 1.4 Success Criteria Project success criteria were established in the IRT-approved detailed mitigation plan and in accordance with the October 24, 2016 NC Interagency Review Team Wilmington District Stream and Wetland Compensatory Mitigation Update. Monitoring and success criteria relate to project goals and objectives. From a mitigation perspective, several of the goals and objectives are assumed to be functionally elevated by restoration activities without direct measurement. Other goals and objectives will be considered successful upon achieving success criteria. The following table summarizes Site success criteria. MV3 Monitoring Report (Project No. 100019) page 5 Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Success Criteria Streams • All streams must maintain an Ordinary High -Water Mark (OHWM), per RGL 05-05. • Continuous surface flow must be documented each year for at least 30 consecutive days. • Bank height ratio (BHR) cannot exceed 1.2 at any measured cross-section. • Entrenchment ratio (ER) must be no less than 2.2 for E- and C-type channels at any measured riffle cross-section. • BHR and ER at any measure riffle cross-section should not change by more than 10% from baseline condition during any given monitoring period. • The stream project shall remain stable and all other performance standards shall be met through four separate bankfull events, occurring in separate years, during the monitoring years 1-7. Wetland Hydrology • Groundwater gauge data will be used to observe fluctuations in groundwater hydrology pre- and postconstruction as the result of overbank events; however, no wetland mitigation credit is being acquired and there are no wetland hydrology success criteria proposed at this time. • Jurisdictional wetland adjacent to UT-3 will demonstrate a 10 to 20% increase in wetland hydrology as compared to pre -construction hydrology, under similar climactic conditions. Vegetation • Within planted portions of the site, a minimum of 320 stems per acre must be present at year 3; a minimum of 260 stems per acre must be present at year 5; and a minimum of 210 stems per acre must be present at year 7. • Areas of dense river cane (canebrakes) are a natural niche habitat within the Swannanoa River floodplain that contribute native habitat for endangered species. River cane may outcompete woody seedlings during the initial establishment of vegetation. Within the Swannanoa floodplain (UT-6, UT-7, and UT-8), the presence of canebrakes may supersede the vegetative success criteria for planted stems per acre. • Trees must average 6 feet in height at year 5, and 8 feet in height at year 7 in each plot. • Planted and volunteer stems are counted, provided they are included in the approved planting list for the site; natural recruits not on the planting list may be considered by the IRT on a case -by -case basis. 2.0 METHODS Monitoring requirements and success criteria outlined in this plan follow the October 24, 2016 NC Interagency Review Team Wilmington District Stream and Wetland Compensatory Mitigation Update. Monitoring will be conducted by Axiom Environmental, Inc. Annual monitoring reports of the data collected will be submitted to the NCDMS by Restoration Systems no later than December 1 of each monitoring year data is collected. The monitoring schedule is summarized in the following table. MV3 Monitoring Report (Project No. 100019) page 6 Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Monitoring Schedule Resource Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Streams WetlandsVegetation II/s, III/, Visual Assessment Report Submittal 2.1 Monitoring The monitoring parameters were established in the IRT-approved detailed mitigation plan and are summarized in the following table. Monitoring Summary Stream Parameters Parameter Method Schedule/Frequency Number/Extent Data Collected/Reported Full longitudinal As -built (unless Stream Profile survey otherwise required) All restored stream channels Graphic and tabular data. Stream Cross -sections Years 1, 2, 3, 5, and 7 Total of 50 cross -sections on Graphic and tabular data. Dimension restored channels Areas of concern to be depicted on a plan view Visual Assessments Yearly All restored stream channels figure with a written assessment and Channel photograph of the area Stability included in the report. Additional Cross- Only if instability is Yearly documented during Graphic and tabular data. sections monitoring Continuous Continuous recording Stream monitoring surface through monitoring Total of 3 surface water Surface water data for Hydrology Y gY water gauges and g g UT3 UT6 & UT8 gauges ( ) each monitoringperiod trail cameras period Continuous Continuous recording monitoring surface Total of 3 surface water Surface water data for water gauges and through monitoring gauges (UT3, UT6, & UT8) each monitoring period Bankfull Events trail cameras period Visual/Physical Continuous through Visual evidence, photo All restored stream channels documentation, and/or Evidence monitoring period rain data. Wetland Parameters Parameter Method Schedule/Frequency Number/Extent Data Collected/Reported Wetland Groundwater Preconstruction, As- 10 gauges in wetlands adjacent to UT1', UT3*', & Graphic and tabular data. Rehabilitation gauges built, Years 1-7 UT6' MV3 Monitoring Report (Project No. 100019) page 7 Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Monitoring Summary (Continued) Vegetation Parameters Parameter Method Schedule/ Number/Extent Data Collected/Reported Frequency Permanent vegetation plots 0.0247 acre (100 square meters) in size; CVS-EEP As -built, Years 1, 25 plots spread across Species, height, planted vs. Protocol for Recording 2, 3, 5, and 7 the Site volunteer, stems/acre Vegetation Vegetation, Version 4.2 (Lee establishment et al. 2008) and vigor Annual random vegetation Number of randomly plots, 0.0247 acre (100 square As -built, Years 1, selected plots to be Species meters) in size 2, 3, 5, and 7 determined each year. as needed * Seven groundwater monitoring gauges were installed in jurisdictional wetland areas adjacent to UT-3 to take measurements before and after hydrological modifications were performed at the Site. The preconstruction condition of the upper reach of UT-3 was an incised Eg-type channel with bank -height - ratios ranging from 1.8-2.4. The majority of UT-3 upper has been restored (priority 1) with construction of channels at the historic floodplain elevation to restore overbank flows to adjacent wetlands. A stream flow gauge and trail camera were installed on UT-3 upper to verify overbank events. Groundwater gauge data will be used to observe fluctuations in groundwater hydrology pre- and post -construction as the result of overbank events; however, no wetland mitigation credit is being acquired and there are no wetland hydrology success criteria proposed at this time. Three groundwater gauges were installed, one adjacent to UT-1, one adjacent to UT-3 lower, and one adjacent to UT-6, in order to show no net loss in function, due to project activities, in existing wetlands along these tributaries. In order to monitor an area of potential wetland creation associated with stream channel restoration, two additional gauges (gauges 4 and 5) were installed along the right bank of UT-3 upper. This area was previously determined non -jurisdictional. Stream Summary All streams are functioning as designed, and no stream areas of concern were observed during year 3 (2022) monitoring. Stream morphology data is available in Appendix D. All three flow gauges failed during the 2022 season, and data was not able to be recovered. The flow gauges were replaced with Onset U-20 gauges on December 2, 2022, and no additional malfunctions are expected. Visual inspection shows strong evidence of channel formation and water flow was observed in all Site streams during year 3 (2022) (Tables 15A-C, Appendix Q. MV3 Monitoring Report (Project No. 100019) page 8 Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Wetland Summary Summary of Monitoring Period/Hvdrologv Success Criteria by Year Year Soil Temperatures/Date Bud Burst Documented Monitoring Period Used for Determining Success 10 Percent of Monitoring Period 2020 (Year 1) March 16, 2020* March 16-November 1 (231 days) 23 days 2021 (Year 2) April 6, 2021** April 6-November 12 (221 days) 22 days 2022 (Year 3) I April 2, 2022^ April 2-November 1 (215 days) 22 days *Based on observed/documented bud burst and data collected from a soil temperature data logger located on the Site. ** During year 1, the growing season was determined based the Soil Survey of Buncombe County (April 2 — November 1) and onsite bud burst documentation. However, based on a 2021 discussion with the IRT, concern arose that the Soil Survey growing season does not accurately represent the current growing season end date. As a result, the growing season methodology was changed to use the most current WETS (USDA 2021) data to determine the growing season end date. After year 2 review, the IRT requested that providers use the growing season methodology from the approved mitigation plan. ^Soil temperature of 44.27°F was documented on March 1 and remained above 41°F thereafter (Appendix E). However, to be consistent with the approved mitigation plan, the Buncombe County soil survey start/end dates are used for year 3 (2022). Overall, based on groundwater gauge data, wetland hydrology has improved from preconstruction and year 1 (2020) conditions. All gauges were saturated/inundated for greater than 10 percent of the year 3 (2022) growing season, with gauges 2-7 and 9 were inundated for approximately 90% of the growing season (Table 17A-B, Appendix E). Vegetation Summary During quantitative vegetation sampling, 25 sample plots (10-meter by 10-meter) were installed within the Site as per guidelines established in CVS-EEP Protocol for Recording Vegetation, Version 4.2 (Lee et al. 2008). Year 3 (2022) vegetation measurements occurred in July 2022 and included 5 additional random sample plots (one 25-meter by 4-meter and four 50-meter by 2-meter). Measurements of all 30 plots resulted in an average of 525 planted stems/acre excluding livestakes. Additionally, all individual plots met success criteria except plots 1, 5, 11, 25, and random plot 4 (Tables 8-10, Appendix C). Vegetation plots 1, 5, 11, and did not meet success criteria in 2022. However, plots 1 and 5 easily meet success criteria when taking natural recruits into consideration. A temporary transect was done adjacent to plot 11 and met success criteria with 445 stems/acre. Plot 11 is in a wetland area adjacent to Gauge 8 that was meeting wetland success for 101 consecutive days, which likely caused the mortality of several less wet - tolerant species. However, RS does not believe this to be a negative, and believe the habitat within the area of plot 11 is appropriate. This is an area RS wishes to discuss with the IRT in the field. Both plots 11 and 25 had no mortality between year 2 (2021) and year 3 (2022). During year (2022) monitoring, parrot feather (Myriophyllum aquaticum) was observed spread throughout the upper reach of UT-3 (Figure 2A, Appendix B). Additionally, multiflora rose (Rosa multiflora), Chinese privet (Ligustrum sinense), Chinese bittersweet (Celastrus orbiculatus), cattail (Typha spp.), Johnson grass (Sorghum halepense), air potato (Dioscorea bulbifera), and Japanese knotweed (Reynoutria japonica) were observed elsewhere throughout the Site but were especially dense along UT- 8 (Figure 2D, Appendix B). All invasives were treated on June 27-28 and September 15, 2022, and will continue to be treated as necessary. MV3 Monitoring Report (Project No. 100019) page 9 Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 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. Shelbourne. 2002. Ecoregions of North Carolina and South Carolina. U.S. Geological Survey, Reston, Virginia. Lee, M.T., R.K. Peet, S.D. Roberts, and T.R. Wentworth. 2008. CVS-EEP Protocol for Recording Vegetation. Version 4.2. North Carolina Department of Environment and Natural Resources, Ecosystem Enhancement Program. Raleigh, North Carolina. North Carolina Division of Mitigation Services (NCDMS). 2014. Stream and Wetland Mitigation Monitoring Guidelines. North Carolina Department of Environmental Quality, Raleigh, North Carolina. North Carolina Ecosystem Enhancement Program (NCEEP), 2009. French Broad River Basin Restoration Priorities 2009 (online). Available at: https://ncdenr.s3.amazonaws.com/s3fspublic/PublicFolder/Work%20With/Watershed%2OPlann ers/French Broad RBRP 15iuly09.pdf [June 1, 2016]. North Carolina Department of Environment and Natural Resources, Raleigh. North Carolina Stream Functional Assessment Team. (NC SFAT 2015). N.C. Stream Assessment Method (NC SAM) User Manual. Version 2.1. Schafale, M.P. and A.S. Weakley. 1990. Classification of the Natural Communities of North Carolina: Third Approximation. North Carolina Natural Heritage Program, Division of Parks and Recreation, North Carolina Department of Environment, Health, and Natural Resources. Raleigh, North Carolina. Simon A, Hupp CR. 1986. Geomorphic and Vegetative Recovery Processes Along Modified Tennessee Streams: An Interdisciplinary Approach to Disturbed Fluvial Systems. Forest Hydrology and Watershed Management. IAHS-AISH Publ.167. United States Department of Agriculture (USDA). 2016. Web Soil Survey (online). Available: http://websoilsurvey.nres.usda.gov/app/WebSoilSurvey.aspx [August 2016]. United States Department of Agriculture (USDA), 2009. Soil Survey for Buncombe County North Carolina. US Department of Agriculture. Available at: http://www.nres.usda.gov/Internet/FSE MANUSCRIPTS/north carolina/buncombeNC2009/Bun combe NC.pdf [June 7, 2016]. United States Department of Agriculture (USDA). 2021. Natural Resources Conservation Service National Weather and Climate Center. AgACIS Climate Data. Asheville WETS Station (online). Available: http://agacis.rcc-acis.org MV3 Monitoring Report (Project No. 100019) page 10 Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Appendix A — Background Map and Tables Figure 1. Project Location Table 1. Mitigation Assets and Components Table 2. Project Activity and Reporting History Table 3. Project Contacts Table Table 4. Project Attributes Table MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 v m m m m m E c 3 o E c E c E c E c U U a�c bo C E:� U U (1)U E:E U U U U U U U U {..'4+ N 00 C C O1 N N b4 N 00 N N 00 U _ N 00 N N 00 N N 00 N N 00 N c 1) Ge G 'e'. U L iU.+ O +-' O U 'e'. U 'e'. U 'e'. U V O C O U O O O C C O C O C O C O C •N N U U N N 'N 8 1-+ m1-+ N .N .N N .N N .N N •N 0 O i v v 0 O O O 0 O 0 O 0 O 0 O v O N N U N L .N U 0) `�- O N U -1 L U ^ L U 00 U U M t U 00 L N N 0) i Ln ' O O O MOOOOOO O O O O O O O O OOO O O o o m 0 000OOO O O U i m 00 N cy; M to O Irl 0 O N Ln O -1O '' Om ONO 0r0 N n 00 ci O N to 00 �' 00 O O UU ci ci .mi N a N C) O O 00 rl 10 M Ljj On Ln O �' to n n n ^ Ln N 00 ul M -' ^ O C 00 .Ni N l0 O O M N r-I 00 I� O0 �' OLn c-I fYl M 1) O' 00 ri O O ci N N Ln M ri N ri -1 ci ci O U Q 00 cri N Ln N 06 00 -ZT r-iLn 00 m OOGU. Ln ^ N O cr � C 0 Lri 71 Lri 71 Ln Ln 71 71 71 � � � � 71 � bA G J J J O J O J O J J O (1)J O O O O " y Cn- }� i c O ai E c O ai E ai E c O ai E � O ai E � O ai E ai E � O ai E 00 ai E � O a0+ 12 u u '�'' U u u u u u ' u tm - O C:O M C: m O c O C O O O ro N U N U .y.� N C U U U U N U N w w � w w w w w w � w cc c W bA 10 M �' to O .-i N a> O �' to O O M N N a> O I� M N N .--I Ln ON �' Lp 00 Ol n O pA +m+ W O. 00 0000 Ln-ZT to O N O Ln M M N .--I N n ^ M N T N N �"� Lfl M a> M �' O +' p U Q O .--I `ICI O .--I `� O 0Ln 11 0 Ln 11 00 U. N N Ln N N M N Ol -ZT ci M aoa w us us m ++ m C) M Ln O N 00 �' r, ri O N 00 a> Ln M N rl L4 ++ Gl U 00 ci .--I Ln Ln �' a> l0 N �' M M 1) N I� n �' N �. ci n Ln ci .-i I� 0) a> �' �. Lfl m a> WO W Q N W U* N N O O � O 00 M l 00 M 00 00to � E O) N O Ln t O M to tt M r �Ln t t tt t t C 'FW. t n t ri t l t O ('4 N Ln 00 O) N t t O �ri t � N O) ON rn rn N Lr O � M O . 1 Wm 00 OWto N10 O O N O Ln+ O O M O M O O a + + + + + + + + + + � + t�O + t LOn O ri ri O NO Ln 00 0) O N O O O �O O O a w Q m U Q m U 0 w L� (7 Q m Q m Q m U Q Q w ci ci ci m m M M M M m -ZT -ZT Ln Ln m m m rl 00 N N � M U J � N G O a v L4 Q O LT C L 4� O E N C m Q N N O L L U U i— C O C ; OC f0 G N N O O N 4' i C O s 4, +� -O U C 4- m C OOC C) G G m N O n 4- to N N � N -p 5 +- C s +� N an an C .� •N Ln � O " s U 4- w aC f0 � 4+ C O .- -0 U 4- f0 � L � O 4- L C E N 0 C � E o N -C °A O o a 4� v- an O d Z N O Q) 4� 0 a � U =) _0 O -p v n v 2 .-- N -O c m'o a U t0 U N EOIn O N N > f0 N O N p Q V) C > a O * G 4- m Table 1(continued). Project Credits Warren Wilson College Stream Mitigation Site Stream Riparian Wetland Non -Rip Coastal Restoration Level Warm Cool Cold Riverine Non-Riverine Wetland Marsh Restoration 9220.000 Re-establishment Rehabilitation Enhancement Enhancement 1 41.333 Enhancement 11 789.600 Creation Preservation TOTALS 10,050.933 Table 2. Project Activity and Reporting History Warren Wilson College Stream Mitigation Site Data Collection Completion Activity or Deliverable Complete or Delivery Institution Date (NCDMS Contract No. 100014) -- May 22, 2017 Mitigation Plan March 2018 November 2018 Construction Plans -- January 10, 2020 404 Permit -- May 13, 2019 Site Construction -- March 4, 2020 Planting -- March 16, 2020 As -built Baseline Monitoring (MYO) January -March 2020 August 2020 Treatment of Kudzu, Rose, Privet, Honeysuckle, English July 27, 2020 Ivy Treatment of Kudzu, Princess Tree, Privet, Rose, -- October 8, 2020 Japanese Bittersweet, Honeysuckle Annual Monitoring (MY1) November 2020 January 2021 Treatment of Japanese Bittersweet, Parrot Feather, May 24-27, 2022 & Privet, Multiflora Rose, Cattail, Air Potato, Honeysuckle, -- September 29 to October 1, Japanese Knotweed, English Ivy 2022 Annual Monitoring (MY2) October 2021 December 2021 Treatment of Parrot Feather, Multiflora rose, Privet, Chinese Bittersweet, Cattail, Johnson Grass, Air Potato, -- June 27-28, 2022 Japanese Knotweed Treatment of Chinese Bittersweet, Air Potato, Multiflora rose, Parrot feather, Privet, Cattail -- September 15, 2022 Annual Monitoring (MY3) October 2022 February 2023 MY3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Table 3. Project Contacts Table Warren Wilson College Stream Mitigation Site Full Delivery Provider As -built Monitoring Provider Restoration Systems Axiom Environmental, Inc. 1101 Haynes Street, Suite 211 218 Snow Avenue Raleigh, North Carolina 27604 Raleigh, NC 27603 Worth Creech Grant Lewis 919-755-9490 919-215-1693 Designer Anchor QEA of North Carolina, PLLC 231 Haywood Street Asheville, NC 28801 Sara Stavinoha 828-771-0279 MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 N aCL 1 E > a \ Ln v w u Z E 0 a cu N O Q U E — F- N o a c Q N= N r.q a1 Ur Ur z N "6 a O Ln o O 3 = c — v o a = •� m Q ,� m -0 Ev C7 v z in m a) 00 't O w -a c v c a O O 7 a°A1 C C "O Z " of a > O M u N U GO .0 Ln O rNI p � _ m -a o r i a)a) +� \ z GO M O N O mbo Ln cy) maa) v m 00 -0 v O vLo o a) v v Ln NZ� s o oo v EO1 a) cc Ln o o c ov 00 C LL M Oo v v m L p u c _0 = E a) m E c ° Ln N c Q 4- u E 7 _ m °N° = m oU a" c 't Q co CO p O = m m 0 uZ � Lmi1 m ma) a) r-+ N a ,p o v a) 0 sn Ti N _ U E N w v M 0 M a a u y U Ln I— Ln v v GL m N W v w U U O 00 W v Q s. n3 M GL U E _ cN G r-I to & Q F- Ln m N uo -0 z -p M r- r-1 ^ u u o a v m 00 m N 0 Q O_ Q al > pa .--1 = 0 Q _0 0.0 a-� C E _ F O C O co ^ v O OC O i E E u Q a1 h0 U C O Ln v i-� o v c a- .0 a 1N U Z o v E v o a w nz v U aO v v a Q u - v c v } M N U y m �j M � N (n c U o a) ea o a v v - U co > v ° v o o Q � M o � o v c 0 a c v v 0 U �° c v m a ago `�° aN' s U s cEo 0 E 0 U co p U a) v Q v U E S o v a% ° 'Q D v N �' C p N O N UO v O v " O i Q > U 7 N ( i U w -O '� f° Q — >m > "6 cr z u Q u Q " oc 5 o c o a, co w to _ O n3 CJ h.0 OC uo a, uo u co U U U U a1 O U a Q v c v ) ) v } v N v a) a 2 v 0 0 0 0 m s o N o 0 0 m v X ° X w a a a a a a a D z a u -j > a z w a w w _c I- O Appendix B — Visual Assessment Data Figures 2 & 2A-2E. Current Conditions Plan View Tables 5A-5G. Visual Stream Morphology Stability Assessment Table 6. Vegetation Condition Assessment Vegetation Plot Photographs MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 D 0 rn c N "O 0 0 0 0 ate+ y 0 O N 7 � O O O O > Q fn i L w+ OI C N N a N O aR>O O +R+ > N o in i L OI C N 0 R O Q O N Z N � C o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O O O O O O O O O O O O O O O o d N R O N y 0 O O O O O O O E LL Q O N y C N N N Q yE O O O O O O C Z ❑cn F N N N N N N N N N N N Z Q � � N N' N N N N N IE C Z N y a R M.. w w E � N O (6 Q L +' 16 U X Up -o m O [0 w +-• (6 L N O m - m O o (6 U w N N U w - d 0 N C - m N w a' -Op E y0 " (6 I y6 N O a E E O E �O U C c 0 O E c OU = N E E O E -o - O O E Y a d x m c E o E m +� N (6 X L N 0 'p c � E O W N w -O .- + O m O c E U O Ov O E � UI � t .. 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L m II o II II C II N E w N c E c .- o m p N M o v `m °� m Warren Wilson College Site MY3 (2022) Vegetation Monitoring Photographs (taken June 2022) Warren Willson College Site Appendix B: Visual Assessment Data MY3 Monitoring Report — November 2022 Alliance Headwaters Site MY3 (2022) Vegetation Monitoring Photographs (taken June 2022) Alliance Headwaters Site Appendix A: Visual Assessment Data MY3 Monitoring Report — November 2022 Warren Wilson College Site MY3 (2022) Vegetation Monitoring Photographs (taken June 2022 except Plot 24, taken November 2022) Warren Wilson College Site Appendix B: Visual Assessment Data MY3 Monitoring Report — November 2022 Warren Wilson College Site MY3 (2022) Vegetation Monitoring Photographs (taken June 2022) Warren Wilson College Site Appendix B: Visual Assessment Data MY3 Monitoring Report — November 2022 Appendix C — Vegetation Data Table 7. Planted Bare Root Woody Vegetation Table 8. Total Stems by Plot and Species Table 9. Temporary Vegetation Plot Data Table 10. Planted Vegetation Totals MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Table 7. Planted Bare Root Woody Vegetation Warren Wilson College Stream Mitigation Site Species — Scientific Name Species — Common Name Wetland Indicator Status Total* Acres 19.64 Cephalanthus occidentalis Buttonbush OBL 50 Diospyros virginiana Common persimmon FAC 500 Liriodendron tulipifera Tulip poplar FACU 900 Betula nigra River birch FACW 2800 Fraxinus pennsylvanica Green ash FACW 3800 Cornus amomum Silky dogwood FACW 3900 Quercus alba White oak FACU 4200 Quercus nigra Water oak FAC 4200 Platanus occidentalis American Sycamore FACW 5600 TOTALS 25,950* **Approximately 5000 live stakes of willow (Salix spp.), elderberry (Sambucus canadensis), silky dogwood (Cornus amomum), and ninebark (Physocarpus opulifolius) were planted, but are not included in this table. MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 o o � a � o — �° 77N � vi o N c a o N p a N O N m N m m ry a � a o f N m N m m rv' N p a 1p;. 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F p ti n c �o m .� .-I co m o m N m m ,-I V a a o vi o ry m O m N f 0 N1 n O n m r-I rl n 0 N N N r-I m rl W C r-I O � n C V M a a N n �D �O m rl rl W o C r-I m rl m o c a m ;CO O f N N � O N N ip ~ N C O c0 N e} d N C J N N ip C N O C a a o � O N V N a � N O N N 77 o0 77 N C a � O J O N N V1 N',.. N N O N O 1 i N � M o F m rl m N V1 N. � m 77 a m FT 0 a vi N N o.. d rtf V N O f vi vi N m a .-I N � � O V1 V1 N m N C r-I a O J vi vi N m a ti; N o a N 'n' C J N O a m C C 15 f F o V o V N E N N O V _ a v a w w v v w w v v s w w v v w w v v w w v v w w v v w v w v s w c o 44 _ v m E y o v o Y° Z o o o o w s s °o 3 a T � `w v 3 o 3 c 3 �. o 0 0 o m v v oo o w y o- Y Y +. o c o ? y o L oo .m Q o -a .o •°1 - o m m o o "° — - - s o I a m u u u u o LL-- a(3(3( �o �n & M m � o # ¥ � 7 6 � ¥ eq 00 m # — # ~ — \ s $ en- o # ¥ # 6 � g ¥ $ % ca ( ca / \ � $ COO _ § / b ( \ f ) / ZZ:E (\ \ / / \ \ § � \ / / � \ \ Table 10. Planted Vegetation Totals Warren Wilson College Stream Mitigation Site Plot # Planted Stems/Acre Success Criteria Met? 1 202 No 2 526 Yes 3 1133 Yes 4 769 Yes 5 283 No 6 567 Yes 7 1012 Yes 8 405 Yes 9 364 Yes 10 445 Yes 11 162 No 12 567 Yes 13 324 Yes 14 688 Yes 15 809 Yes 16 769 Yes 17 728 Yes 18 324 Yes 19 688 Yes 20 567 Yes 21 567 Yes 22 526 Yes 23 364 Yes 24 445 Yes 25 243 No T-1 445 Yes T-2 647 Yes T-3 486 Yes T-4 243 No T-5 445 Yes Average Planted Stems/Acre Across Permanent & Temporary Plots 525 Yes MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Appendix D — Stream Geomorphology Data Tables 11A-I. Baseline Stream Data Summary Tables 12A-I. Baseline Stream Data Summary (Substrate, Bed, Bank, and Hydrologic Containment Parameter Distributions) Tables 13A-I. Monitoring Data -Dimensional Morphology Summary (Dimensional Parameters -Cross - sections) Tables 14A-I. 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Verification of Bankfull Events Table 17A-13. Groundwater Hydrology Data Groundwater Gauge Graphs Figure E-1. Year 3 (2022) Soil Temperature Data MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 s' N fC � N LD � s' N � O N Ln s' N Co N O N � M s' N Co N O N M N R N * Q n N n N n N n N n N n N n N n N n N n N O Z 0)N z N fC I� N N N N N N N N N N z GJ N cI i-1 fC N Ln N N N N N N N N N N C _ N i to C 3 O 4�, C N � a� M O sU O s C `�° 0 c i i ° vi v- p 4' fu a) 4 3 " 0 a p O +- c 4— O N -p o -CO 4� o a� E o o>- N a (1) u =o t 3 c p 'Z 4- -C U 'O Q- -0 -a C to fu 3 -p i 4O" N -O E N s O a) O s a) N -C� O 3 a� c U C f0 O_ 0 N C V +-C o -0� N a E Q, •� � a) � C ocfo 3 a `° a co a E_ aci c s 3 3 Q) to > O vvi s '� o to +' U C c 0 c s 0 4— O L o c ,� s � O � o� � Q a fu O O co s s fu 3 u -0 C o -o w 4. co c w O c c " s c co C E� a� C o co u > _0 c O N c O � o aA E c 4� a a, co _0 co � s p 4� a� c c 3 4� c O o s >_ N +� ifu ° o t0 s dA C C > U O .� -- co 4- � o O o W +� a-� Q- C 4- i N t0 C p fu �p 4' N 3 U 4- ° -0 N 'O C O C ON O 4- , S O fC C U i 4. 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C to N O+' C +- C C O O ;� E d� VC O u � = -O ' a a a aa _0° � O c • • x��' to N t0 t0 E' CLD =o > Q -CmO c C d J cc G N > > L.L N N u > .E 0 0 W O N � M U J � f0 f0 O G LT f0 i "a O a v , g ua a v m _00.0 0. a) u E N f0 Q- N a% a1 � N i a1 uo O :3 _0 m uo c co � O a) a! uo N co -� C7 ~ co � � a1 0 s w E CA O c0 v'- uo -O i co � O _0 O u 7 � a1 v O Q UO UO O C v a1 u O � C O E C O coo -0 O C N (O O { 0 m u a O c 0 M � i N u N 7 o E o Op i N o O a) O UO > •c rn u OO a -0 N u .O O a N uo c v g d o Q °cr a)v v o 3 ua ° a v N f0 � C uo o o (n > >) a v Z j m O D O O) U G uo O c c �_ U OQj UO — M v W Q Q N N i O tz I— x rl � v � Q q � � � o ( m o r Ln m o 0) r m o 0) r cn , m m / 2 » 2 » 2 » 2 » 2 » 2 » 2 » 2 » 2 » 2 » 0 2 0) 0 g 2 » 2 » 2 » 2 » 2 » 2 » 2 » 2 » 2 » 2 » 0 2 am) 1 m r 2 » 2 » 2 » 2 » 2 » 2 » 2 » 2 » 2 » 2 » 0 2 41 7 CU : / c \ / / c ® 0 1 n / R 'E 0 ¥ : 2 % / , = n % E ƒ / R u -0 0 \ / \ � / § $ § ) -0 E e 0 \ ® - 2 0 G e ' 0 0 2 $ n » o R & \ e 2 � # 0 } 0 f - e 3 } _ c \ ¥ e •§ / 2 / a > n#• Z, e$ \ .[ u ZZ0ƒ a /fu 7 o0 / E cu \ 5 ) % 2 / -0 & / / £ / a � o § / # \ / E f % ¥ e 2 § n 7 % ° 2 / \ $ � 2 'e @ 2 5 \ t u / 0 \ = u -0 = -C " _ = E § = [ % / 0fu \ _0 § $ u / e c \ \ § ® / 7 \ m e / f t$ n e= u¥— fu °_ 0 ® 2 k \\ C 0 �/ \ cƒ C 0 0 3 a n— {— E % § \ // a .e 0 2 § _ / _0 t e / c e c e •5 .§ .E e % \ \ { o = E _ •• u u\» 3 E G/ E E }%\ 5 5 ƒ 0 t n # 5 # 5 5 n e = $ 'a \ � % .e 2 % 0 x 3 / Table 16. Verification of Bankfull Events Date of Data Date of Photo Monitoring Collection Occurrence Method (if available) Year Stream gauges and trail cameras captured a bankfull event at UT8 after 4.47 inches of rain was documented May 20, 2020 May 20, 2020 between May 19 and 20, 2020 at a nearby weather 1 MY1 station. Wrack and laid-back vegetation were observed outside November 4, October 27, the TOB of UT3 after 4.7 inches of rain was 2 MY1 2020 2020 documented between October 27 and 28, 2020 at a nearby weather station. Wrack and laid-back vegetation were observed outside January 26, January 26, the TOB of UT6 after 0.5 inches of rain was 3 MY2 2021 2021 documented January 26, 2021 at an onsite rain gauge. Wrack and laid-back vegetation were observed outside March 31 April 6, 2021 the TOB of UT7 after 1.09 inches of rain was 4 MY2 2021 documented March 31, 2021 at an onsite rain gauge. Wrack and laid-back vegetation were observed along October 13, September 6, the TOB of UT3, UT5, and UT8 after 2.22 inches of rain 2022 2022 was documented September 5-6, 2022 at an onsite rain 5, 6, 7 MY3 gauge. MY3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Table 17A. Groundwater Hydrology Data: Mitigation Success (UT-3B, Little Berea/ Clingman's) Typical Success Criteria Achieved/Max Consecutive Days During Growing Season (Percentage) Gauge Year 1 Year 2 Year 3 (2022) Year 4 Year 5 Year 6 Year 7 (2020) (2021) (2023) (2024) (2025) (2026) 3 Yes/127 days Yes/198 days Yes/193 days (55.0%) (89.6%) (89.8%) 4 Yes/32 days Yes/198 days Yes/193 days (13.9%) (89.6%) (89.8%) Yes/174 days Yes/198 days Yes/193 days 5 (75.3%) (89.6%) (89.8%) 6 Yes/93 days Yes/198 days Yes/193 days (40.3%) (89.6%) (89.8%) 7 Yes/72 days Yes/198 days Yes/193 days (31.2%) (89.6%) (89.8%) 8 Yes/231 days Yes/198 days Yes/101 days (100%) (89.6%) (47.0%) Table 17B. Groundwater Hydrology Data: Potential Wetland Loss Monitoring Areas Typical Success Criteria Achieved/Max Consecutive Days During Growing Season (Percentage) Gauge Year 1 Year 2 Year 3 (2022) Year 4 Year 5 Year 6 Year 7 (2020) (2021) (2023) (2024) (2025) (2026) 1 Yes/37 days Yes/198 days Yes/46 days (16.0%) (89.6%) (21.4%) 2 Yes/61 days Yes/198 days Yes/194 days (26.4%) (89.6%) (90.2%) 9 Yes/175 days Yes/198 days Yes/193 days (75.8%) (89.6%) (89.8%) 10 No*/9 days Yes/61 days Yes/26 days (3.9%) (27.6%) (12.1%) *Gauge was not installed until August 1, 2020. It is expected to have exceeded typical wetland success criteria had it been installed earlier in the growing season. 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I 1/11/22 1/1/22 N O 00 N N N i-1 w 1-1 1-1 N 1-1 O 00 w 1-1 N O N zT 1 w 1 00 1 O 1 c- N 71 zT w 71 71 00 O 71 N (UI) I3ABI d3}empunodE) 11/27/22 11/17/22 I 11/7/22 10/28/22 10/18/22 I 10/8/22 9/28/22 9/18/22 i I 9/8/22 I 8/29/22 ++ I i I 8/19/22 Q I 8/9/22 E I 7/30/22 H 7/20/22 I 7/10/22 O I 6/30/22 (A .••. I 6/20/22 NI 6/10/22 0 I 5/31/22 N I ... I 5/21/22 M m I 5/11/22 L d. 5/1/22 �- C I 4/21/22 u r4 I 4/11/22 4/1/22 W s I 3/22/22 a) ° I 3/12/22 3/2/22 u 2/20/22 2 I 2/10/22 1/31/22 1/21/22 „ 1/11/22 I 1/1/22 O 00 to d' N O 00 to d' N O 00 to d' N O 00 to d' N O 00 to 00 r- r- r- r- r- �o �o �o �o �o Ln Ln Ln Ln Ln d- d- d- d- It m m (iiayuaayej saaasaa)ainjeaadwal Appendix F — Preconstruction Wetland Hydrology Data Figure 3. Preconstruction Gauge Locations Table 18. Preconstruction Groundwater Gauge Data Summary Table 19. Preconstruction vs Postconstruction Gauge Analysis MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Table 18. Preconstruction Groundwater Gauge Data Summary Success Criteria Achieved/ Max Consecutive Days During Growing Season (Percentage) Gauge 2018 Data 2019 Data 1A No/21 days Yes/57 days (9.8 percent) (27 percent) No/9 days Yes/50 days 113 (4.2 percent) (23 percent) 1C No/3 days No/3 days (1.4 percent) (1.4 percent) 2A NA* Yes/48 days (22 percent) 213 No/20 days No/0 days (9.3 percent) (0 percent) 2C No/12 days Yes/50 days (5.6 percent) (23 percent) 3A No/24 days Yes/124 days (11.2 percent) (58 percent) 313 Yes/117 days Yes/140 days (54.7 percent) (65 percent) 3C No/4 days No/3 days (1.9 percent) (1.4 percent) *Gauge 2A was damaged during 2018 and data was not recoverable. It was replaced in 2019. MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 N " m W V m a I� � V Q ti own + o v + o v :3 c l7 O u O ti O O u O_ ti 0 V in aJ u 6 N i V in aJ u O ti O C c O O O C c O p 6 a1 aJ N V — a1 S N V — a1 aJ (Np (0 N aJ V O 'N o -o N N V aJ O W �n N N Q txO E N a) a1 T W a O W N a) w E N O a) w O u E O a1 `� E Z N w aJ N a1 Z Q p O N 2 w w aJ N w '� N ti E c c E c v on - 5 ai c E c v on a1 p p � O O u O Y u > bA >, bA aJ N O O u O Y u > bA Q m 2 2 v c o > 2 2 v c E o m o - c m o m - •u - c 3 c E u v< c 3 c E c o°n a V- v u •o c ai V-D a) •o mtxo v o= a c ai tia � 0 o b+l a c v> O n o o a o m O Ln o o a o a m a a m u l7 a a m u 0 o 0 r c w C c v y y o 0 0 0 0 0 0 01 E `w o 0 0 0 0 0 0 u n v Ln kD rn m .� .� m v � W O � N � Ln o Ln > O Ln Ln Ln o d' r, a E E x o o 0 0 0 0 0 0 i Ln Ln a' W I, Ln to c oo oo v r, �o v oo oo o m n n n o v Q T O W N j O O O o 0 0 0 0 0 0 N a' Ol a' to Ol Ol to Ol m o Ol to Ol N .�. V tO o� o� o� O o� o� Q 7 en y M en a)oo Ol Ol oo Ol oo n Ol Ol v oo oo E r O r O N O O x ° > bA X ei ei O = O w Ol o) o) o) a) a) a) N iD iD iD iD iD iD iD ->- ti .--i .ti .--i ti ti ti *' ` N W W W W W W W t CC G CC N G 6 U m O — V 3 C V _ O _ ; O O o 0 0 0 o 0 In N m 1 w a' O Ol m o N m ti O ai � mLn m Ln oO .� O aJ 1 r r N Ln rl n ry m a' u c o 0 w w m V Ln oo n w N m V Ln oo n w O mN o O ti O v N Ln o 0 0 0 0 0 0 0 0 o m of �'n a o m n oo Ln v a. o m m rn E Q N m Q of m v m of .� .� r4 N .� m Ln O H O V N 01 Oo p C ei r O m W O O T O N a. m a. O O O O O 4 •u Vo Ln Ln a' Ln ry = o ^ m N N N o N m N oo Ln Ln to m E x m u (J m = O aJ aJ = OU U 7 • ++ Q w Q ri rl m N O Z N N .--I a' ry N a' = ai W N a' m Z lD N r,Ol 3 '6 N N ry V N Ol a' �--I o) Ln Ln �--� m O C V a O > � ti m V Q m V Q m V Q m V Q m V Q m V �p N N N N N N m m en �p �-1 1-4 1-4 N N N m m m Appendix G — Site Photo Log MV3 Monitoring Report (Project No. 100019) Appendices Warren Wilson College Stream Restoration Site Restoration Systems, LLC Buncombe County, North Carolina February 2023 Warren Wilson College MY-03 (2022) Photo Log MY3 (2022) Monitoring Report (Project No. 100019) WWC Stream Mitigation Site Appendices Restoration Systems, LLC Warren Wilson College MY-03 (2022) Photo Log MY3 (2022) Monitoring Report (Project No. 100019) Appendices WWC Stream Mitigation Site Restoration Systems, LLC Warren Wilson College MY-03 (2022) Photo Log MY3 (2022) Monitoring Report (Project No. 100019) Appendices WWC Stream Mitigation Site Restoration Systems, LLC Warren Wilson College MY-03 (2022) Photo Log MY3 (2022) Monitoring Report (Project No. 100019) Appendices WWC Stream Mitigation Site Restoration Systems, LLC Warren Wilson College MY-03 (2022) Photo Log MY3 (2022) Monitoring Report (Project No. 100019) WWC Stream Mitigation Site Appendices Restoration Systems, LLC Warren Wilson College MY-03 (2022) Photo Log MY3 (2022) Monitoring Report (Project No. 100019) Appendices WWC Stream Mitigation Site Restoration Systems, LLC Warren Wilson College MY-03 (2022) Photo Log MY3 (2022) Monitoring Report (Project No. 100019) Appendices WWC Stream Mitigation Site Restoration Systems, LLC Warren Wilson College MY-03 (2022) Photo Log MY3 (2022) Monitoring Report (Project No. 100019) Appendices WWC Stream Mitigation Site Restoration Systems, LLC Warren Wilson College MY-03 (2022) Photo Log MY3 (2022) Monitoring Report (Project No. 100019) Appendices WWC Stream Mitigation Site Restoration Systems, LLC Warren Wilson College MY-03 (2022) Photo Log MY3 (2022) Monitoring Report (Project No. 100019) WWC Stream Mitigation Site Appendices Restoration Systems, LLC Warren Wilson College MY-03 (2022) Photo Log MY3 (2022) Monitoring Report (Project No. 100019) WWC Stream Mitigation Site Appendices Restoration Systems, LLC Warren Wilson College MY-03 (2022) Photo Log MY3 (2022) Monitoring Report (Project No. 100019) WWC Stream Mitigation Site Appendices Restoration Systems, LLC