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HomeMy WebLinkAbout20190865 Ver 1_Laurel Springs_MY2(2023)_IRT Site Visit NotesLaurel Springs Stream & Wetland Mitigation Site Monitoring Year 2 IRT Site Visit Date: 10-18-2023 NC DMS Contract # 7890 RFP # 16-007725 DMS/Project # 100122 USACE Action ID No. SAW-2019-00835 DWR Project No. 2019-0865 1 of 2 Task 1 a.) Inter-Agency Post Contract Site Visit: Site Visit Notes Below is a list of attendees and general site visit notes. Attendees: USACE: • Todd Tugwell • Steve Kichefski NC WRC: • Andrea Leslie NC DMS: • Paul Wiesner • Matthew Reid • Harry Tsomides NC DWR: • Mac Haupt • Maria Polizzi Restoration Systems: • JD Hamby Axiom Environmental • Grant Lewis General Site Visit Notes: • Vegetation adaptive management plan discussion:  Do not include sycamores in the 2024 replanting effort.  Include a map detailing the areas that will receive supplemental planting in 2024. Attached Below.  RS was cautioned against heavily using black willow live stakes along the channel to prevent black willows from spreading rapidly throughout the site. Wetland Notes: • Replace failed gauges number 2 and 3 at the bottom of the site during the winter, before the next growing season. Existing hydrology seemed to indicate the probability of collection failure, rather than reflecting a lack of soil inundation. It was also noted that RS has provided uplift to many more wetland acres than contracted due to using the with the wider buffer method calculation tool. UT-2 Notes: • The pipe installed in the crossing is not remaining 20% buried as is the goal. The steep nature of the channel due to site topography was determined to be the cause. RS proposed adding rock at the culvert outfall this winter and document the work with photos in the monitoring report. If this effort is unsuccessful, then rubber “flexy baffle” would be a possible remediation to provide cobble places to lodge in the lower reach of the pipe. Laurel Springs Stream & Wetland Mitigation Site Monitoring Year 2 IRT Site Visit Date: 10-18-2023 NC DMS Contract # 7890 RFP # 16-007725 DMS/Project # 100122 USACE Action ID No. SAW-2019-00835 DWR Project No. 2019-0865 2 of 2 USACE Questions for October Site Visit: 1. Overall, I don’t see any issues with the AMP or proposed species. It is understood that all species proposed were part of the approved mitigation plan. RS also coordinated with WRC and Erin (USACE) on species. Noted 2. RS mentioned a dense herbaceous layer, and poor soil on upland areas as an ongoing issue for the site. Are there any plans to do ring sprays and/or conduct any soil amendments? Not at this time, larger, potted plants will be planted instead. 3. The term “exceptional hydrology” was used throughout the document, is this referring to inundation? Yes 4. Not part of the AMP, but 2 GWG failed (2 & 3). GWG 3 is the only gauge in the large wetland rehab area at the southern end of the project. Noted and discussed during site visit. 5. Visit the UT1 culvert and update IRT on recently added rocks to back water up within the pipe. Is it perched/buried? Discussed on site and noted in the meeting minutes. Draft AMP coordination/response: Andrea Leslie (NCDWR) - Erin and I have reviewed the AMP. We like the planting list for the most part, and we’re glad you’re bringing in species that were in the mit plan but not planted. We both think that leaving white pine out of the new plantings is a good idea – you have volunteers coming in of that species and it’s not the greatest riparian choice, anyway. Could you substitute persimmon instead? Persimmon will be substituted. Erin Davis (USACE) - I didn’t see any major red flags and am generally ok with their approach and plant selection. I guess I would question why they’re proposing more bareroot white pine when they note earlier numerous white pine volunteers. I would also ask that they not go crazy with willow live stakes. Black Willow live stakes will be limited and used only in select areas of the site. 9 8 7 6 5 4 3 21 4 6 9 8 7 1 10 2 3 5 8 1 5 7 2 6 4 9 3 11 16 13 10 12 14 15 Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community FIGURE Drawn by: Date: Scale: Project No.: PHP, MH NOV 2023 1:2000 19-009 Title: Project: Prepared for: Avery County, NC LAUREL SPRINGSMITIGATION SITE AMPPLANTING PLAN 2 Notes: 1. Background Imagery Source: 2022 aerial photography provided by the NC OneMap program (online, provided by the NC Geographic Information Coordination Council) 0 300 600150Feet Legend Conservation Eas ement = 29.18 acres AMP Proposed Planting: Pots +/- 1.5 acres AMP Proposed Planting: Bare Root +/- 13 acres Permanent Vegetation Plots Meeting MY3 Stem Density Requirements Permanent Vegetation Plots Not Meeting MY3 Stem Density Requirements Temporary Vegetation Plots (50m x 2m) Meeting MY2 Stem Density Requirement Temporary Vegetation Plots (50m x 2m) Not Meeting MY2 Stem Density Requirement ³ UT-4 UT-3 U T - 2 U T-1 Fork Creek UT-5 U T - 3 A UT-2A