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HomeMy WebLinkAbout20181710 Ver 1_P15049.1 RFMGF Restoration Plan_20190308Quible Quible & Associates, P.C. ENGINEERING • ENVIRONMENTAL SCIENCES • PLANNING • RESTORATION SINCE 1959 March 8, 2019 Michael E. Warnock Diversified Real Estate Partners, LLC 306 E Main Street, Suite 200 Lakeland, FL 33801 Re: Stream, Stream Buffer and Wetland Restoration Plan Red Fox Meadows Subdivision PIN: 185914347625 280 Ralph Gwaltney Lane Banner Elk, NC 28604 Michael: 90 Church St., Suite B Black Mountain, NC 28711 Phone: 828-793-0398 Web: quible.com Transmitted via email: michael. warnockPdrepllc.com Quible & Associates, P.C. (Quible) appreciates the opportunity to provide Diversified Real Estate Partners, LLC (DREP) with this Stream, Stream Buffer and Wetland Restoration Plan for tributaries of Whitehead Creek located on the referenced property (Site). Quible is aware that RFM and Gwaltney Farms, LLC (RFMGF) received Notice of Violations of the Sedimentation and Pollution Control Act for Construction Activities dated January 4, 2019 (NOV) from the NC Department of Environmental Quality - Land Quality Section. We are also aware that this Plan will be included in the response to the NOV and correspondence with other regulatory agencies regarding stream, stream buffer and wetland impacts at the Site. BACKGROUND Quible delineated streams and wetlands as part of a Jurisdictional Determination (PJD) at the Site between the dates of January 25 and February 28, 2019. Submittal of the PJD and the request for verification was made to Amanda Jones of USACE and the on -Site verification is scheduled with Jones for March 21, 2019. Jurisdictional stream and wetland boundaries were flagged in the field by Quible and subsequently Quible's flags were surveyed by David Stern, PLS. The attached Sheet 7 (Jurisdictional Streams, Wetlands & 25' Trout Buffer) from the revised Erosion & Sediment Control Plan for Subdivision Roads at Red Fox Meadows was provided to Quible by Stern on February 25, 2019. March 8, 2019 Stream, Stream Buffer and Wetland Restoration Plan Red Fox Meadows and Gwaltney Farms, LLC I M PACTS Based on the survey by Stern and as shown Sheet 6, which has been marked up by Quible as a reference for this Plan (Exhibit A), approximately 0.66 acres of trout buffer, 2,134 linear feet of Streams and 0.022 acres of Wetlands were impacted by construction of subdivision roads at the Site. Of these impacts approximately 0.33 acres of trout buffer, 149 linear feet of streams and 0.018 acres of wetland will remain as permanent impacts. Quible understands that sediment removal from streams resulting from RFMGF construction activities was required by the NC Division of Water Resources (NC DWR). It is also understood that a sediment removal plan was executed by RFMGF, that NC DWR inspected and approved sediment removal at the Site and that no further sediment removal is required at this time. This Restoration Plan aims to address the maximum amount of restoration possible for temporary, currently unpermitted RFMGF impacts at the Site. Additionally, this Plan makes recommendations for restoration of other areas of the Site that were impacted historically, before development by RFMGF, to provide additional benefit to water quality in the tributaries to Whitehead Creek and to compensate for permanent impacts at the Site. Construction of the subdivision road impacted trout buffer along tributaries of Whitehead Creek beginning at the Site entrance at about 1200 South Beach Mountain Parkway. These tributaries are labeled in Exhibit A as UT -1A, UT -113, UT -1131. Stream impacts occurred on tributaries UT -113 and UT -1131 as three culverts/crossings. One approximate 40 -feet culvert was installed in Tributary UT -1131 upstream of its confluence with Tributary UT -113. Two culverts were installed in Tributary UT -113, one approximate 40 -feet culvert just upstream of the UT -1131 confluence and one approximate 50 -feet culvert further upstream where the subdivision road crosses UT -113 again northeast of the historic dairy barn and between wetlands labeled WA -4 and WA -5 (Exhibit A). Lastly, an approximate 0.022 -acre wetland area has been impacted in the same location as the upstream culvert on Tributary UT -113. Specifically, temporary wetland impacts occurred along the northeast end of Wetland WA -4 and are the result of construction of the fill -slope associated with the subdivision road and the culvert installed in Tributary UT -113 and through the wetland in this location. SREAM RESTORATION Stream Restoration will take place along Tributary UT -1131 from the confluence with UT -113 to the west shoulder of the subdivision road, approximately 80 -linear feet (Exhibit A, orange hatch). Restoration will include the following steps and will be completed first: 1. Establish a steam channel of appropriate dimension, pattern and profile under the supervision of Quible. 2. Grade and install a bankfull bench at or slightly below bankfull elevation as identified in the field and as directed by Quible. The bench will have a toe -slope of approximately 3H:1V and bee approximately 3 -feet in width on either side of the stream. 3. Grade streambanks above the bankfull bench to slopes of approximately 3H:1V. Quible will be on Site during construction of the stream channel for construction layout, observation, and monitoring. March 8, 2019 Stream, Stream Buffer and Wetland Restoration Plan Red Fox Meadows and Gwaltney Farms, LLC 4. The stream channel will be constructed in the dry. Culverts currently installed as part of the subdivision road in this area are conveying stream flow down the east roadside ditch and to another culvert located downslope before flow returns to the stream. 5. Install riparian vegetation and slope matting as described below for buffer restoration once the stream channel has been constructed as described and approved by Quible. Restoration of Tributary UT -1131 shall include restoration of the buffer upstream and east of the subdivision road where road construction has disturbed vegetation and soils. 6. Once construction of the stream channel is complete the culverts(s) beneath the road shall be reconfigured to allow conveyance of the stream to the newly restored channel. Typical drawings, details and specifications of restoration techniques described in this Plan will be provided to DREP prior to the start of construction. UJ/:1111U_1►Ul 1.4MIM :L flQL1I Wetland restoration will occur at the northeast end of Wetland WA -4 where the fill slope for the subdivision road has been allowed to impact the approximate 0.004 -acre area (Exhibit A, green hatch). Wetland restoration will be completed in the following manner: 1. Remove fill soil carefully from the wetland and adjacent area to the north using an excavator positioned outside the wetland. Soil removed from the wetland will be removed from the area and staged for later use as backfill. Only fill/upland soils will be removed from the wetland and care will be taken to leave hydric soils as intact as possible. Quible will be on Site to observe soil removal. 2. Construct a low (less than four -feet height) retaining wall along the north side of the wetland to retain the fill slope outside of the wetland. The wall will be constructed to be stable using sound, industry standard, engineering techniques. The wall will be constructed from outside the wetland area and care will be taken not to impact the wetland. 3. Post construction of the wall the area of the wetland where soil was removed will be seeded with Ernst Conservation Seed, NC Mountains FACW Mix-ERNMX-305 (https://www.ernstseed.com/product/nc-mountains-facw-mix/?anchor=26) and mulched with Wheat straw as described in the Stream Buffer Restoration section of this Plan. 4. The area around UT -113 within the 25 -feet trout buffer that has been disturbed both by RFMGF and historically shall be restored as described in the Stream Buffer Restoration section of this Plan. TROUT BUFFER RESTORATION Restoration of trout stream buffers will include revegetation of the riparian buffer within 25 -feet of streams or greater in all locations disturbed by construction of the subdivision road along the tributaries referenced above and shown blue hatch on Exhibit A. Buffer restoration will include revegetation with a temporary/nursery crop of annual grain, appropriate for the season, and native riparian herbaceous, shrub and tree plant species. Specifically, stream buffer areas disturbed by RFMGF will be restored in the following manner: 1. Lightly scarify soils within the impacted buffer to road shoulder or within 25 -feet of stream with hard rakes, breaking up soil hard -pan but leaving any existing vegetation as intact as possible. March 8, 2019 Stream, Stream Buffer and Wetland Restoration Plan Red Fox Meadows and Gwaltney Farms, LLC Seed the riparian buffer with Ernst Conservation Seeds, NC Mountains Riparian Mix, ENRMX-304 (https://www.ernstseed.com/product/nc-mountains-riparian-mix/?anchor=I1) per manufacturer specifications and a nursery crop of annual grain appropriate for the season: grain oats (30 lbs./acre; 1 Jan to 30 Apr), brown top millet (10 lbs./acre; 1 May to 31 Aug), or grain rye (30 lbs./acre; 1 Sep to 31 Dec). Mulch entire seeded buffer with wheat straw such that approximately 80% of the ground surface is covered with straw mulch. 4. Install 700g/m2 Coconut Fiber Coir slope matting from the water's edge to the top of the streambank per manufacture specification. Overlap, in a downstream direction, where matting ends meet and trench -in all free edges of matting to a depth of six -inches below ground surface. 5. Install two rows of lives sake tree and shrub species (Ninebark (Physocarpus opulifolius), Silky Dogwood (Cornus amomum) and Elderberry (Sambucus nigra) alternating the species at one - feet on -center spacing from the waters edge towards the top of bank. Live stakes shall be installed during late fall, winter or early spring while dormant, during leaf off. Before planting, live stakes shall be lightly scarified and treated with a rooting hormone per manufactures specification. Live stakes shall be installed right side up to a depth of 2/3 the length of the stake. 6. Install container shrubs and trees from the landward edge of the coir matting near the top of the bank consisting of the following species: Rhododendron (Rhododendron catawbiense), Red Maple (Acer rubrum) and Yellow Birch (Betula alleghaniensis) at six -feet on center spacing to the landward side of the stream buffer. 7. Carefully fertilize the restoration area using 17-17-17 fertilizer per manufacturer specification. Care shall be used to keep fertilizer out of water in the stream channel. 8. Watered restored areas during periods of dry weather until a hearty stand of temporary vegetation reaches a height of at least six -inches and thereafter as necessary to help ensure plant survival. 9. Restoration of trout buffers in other areas of the Site that were historically impacted by others (related to farming and construction of roads and structures) shall include careful removal of trash and debris within the buffer, revegetation of areas disturbed by removal of trash and debris shall be revegetated as described above. Other areas of historically impacted buffers shall be left undisturbed in perpetuity and allowed to naturalize with existing vegetation. Monitoring Monitoring of restoration activities will be conducted by Quible. Photographic and written documentation of construction of this Restoration Plan will be completed by Quible and provided to NC DEQ -Water Resources and Land Resources Sections and other agencies as requested. On going monitoring will occur annually for a period of three years and will include a brief letter report and photographic documentation including any recommended repairs if warranted. March 8, 2019 Stream, Stream Buffer and Wetland Restoration Plan Red Fox Meadows and Gwaltney Farms, LLC Quible appreciates the opportunity to provide this Restoration Plan. If there are questions or comments related to this Plan, please feel free to contact Joel Lenk at 828-280-8375 or ilenk@guible.com. Sinc2,4 QUIBLE & ASSOCIATES, P.C. Enclosures: Exhibit A- Quible Mark-up of Sheet 6 (Jurisdictional Streams, Wetlands & 25' Trout Buffer) from Stern, PLS