Loading...
HomeMy WebLinkAbout20161076 Ver 1_Notice of AMP As-Built Summary_20200526Strickland, Bev From: Browning, Kimberly D CIV USARMY CESAW (USA) <Kimberly.D.Browning@usace.army.mil> Sent: Tuesday, May 26, 2020 3:00 PM To: Davis, Erin B; Haupt, Mac; Tugwell, Todd J CIV USARMY CESAW (US); Wilson, Travis W.; Leslie, Andrea J; Bowers, Todd; Byron Hamstead (byron_hamstead@fws.gov); McLendon, C S CIV USARMY CESAW (USA); Crumbley, Tyler A CIV USARMY CESAW (USA) Cc: Wiesner, Paul; Tsomides, Harry; David Tuch Subject: [External] Notice of Adaptive Management Plan As -Built Summary/ NCDMS Fletcher Stream and Wetland Site/ SAW-2016-02205/ Henderson Co. Attachments: Fletcher_100004_AMP As -Built Summary_2020.pdf, Fletcher_100004_FB 05 _STR_RW_Initial Release.pdf CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to report.spam@nc.gov<mailto:report.spam@nc.gov> The below referenced Adaptive Management Plan As -Built review has been requested by NCDMS. Per Section 332.8(o)(9) of the 2008 Mitigation Rule, this review follows the streamlined review process, which requires an IRT review period of 15 calendar days from this email notification. Please provide any comments by 5 PM on the 15-day comment deadline shown below. When providing comments please indicate if your concerns are great enough that you recommend not issuing the credit release. Comments provided after the 15-day comment deadline (shown below) may not be considered. At the conclusion of this comment period, a copy of all comments will be provided to NCDMS and the NCIRT along with District Engineer's intent to approve or disapprove this Final Record Drawing and initial credit release. 15-Day Comment Start Date: May 26, 2020 15-Day Comment Deadline: June 10, 2020 45-Day Credit Release Approval Deadline: July 10, 2020 Please find the summary of the completed adaptive management plan (AMP) for the Fletcher Stream and Wetland site attached. All AMP work was completed by 2/28/2020. Due to the additional work completed in February 2020, DMS and E.W. Solutions decided to delay Monitoring Year 1 (MY1) reporting until 2020. Accordingly, the MY1 credit release will be requested for the entire site in April 2021 at the next IRT credit release meeting. This varies from our original IRT request but will allow for standard project credit releases and will hopefully avoid confusion. As described in the summary, E.W. Solutions is requesting a monitoring variance based on the delayed MY1 reporting. The full delivery provider collected monitoring data on a majority of the site in 2019 and are requesting reduced monitoring in MY7 if performance standards have been met. All project assets will be monitored for the required 7-year period. Please let me know if a separate mitigation plan addendum request is required. A copy of this AMP summary will be included as an attachment in the 2020 - MY1 report for documentation. Per this email, DMS is requesting the 30% credit release for this project: As noted, 2020 is Monitoring Year 1 for this project. The 2019 As -Built Baseline Monitoring Report, 2019 Record Drawings, and the 2020 AMP Summary and As -built are all posted on the IRT SharePoint page for your review. These documents have also been uploaded to the DWR Laserfiche site (5/19/2020). Attached to this email for IRT Review: The DMS credit ledger for the 30% release. Requested Adaptive Management Plan Summary and As -built (5/15/2020) Project information: Fletcher Stream and Wetland Site DMS Project # 100004 RFP# 16-006808 - Issued 2/15/2016 Institution Date: 10/04/2016 - Full Delivery French Broad River Basin Cataloging Unit 06010105 Henderson County, North Carolina Mitigation Plan Project Credits: 7,253.3 SMUs (Cool) 2,758 SMUs (Cold) 8.91 WMUs (Riparian) As-Built-MYO Project Credits: 7,253.3 SMUs (Cool) 2,758 SMUs (Cold) 8.91 WMUs (Riparian) Mitigation Plan Lengths/Acreages: 11,673 LF 8.91 AC As-Built-MYO Lengths/ Acreages: 11,653 LF 8.91 AC Provider: E.W. Solutions LLC - E.W. Solutions LLC Contact: David Tuch, david@equinoxenvironmental.com , 828-253-6856 Designer: Stantec - Stantec Contact: Grant Ginn, Grant.Ginn@stantec.com, (828) 449-1930 NCDEQ - DMS PM: Harry Tsomides, harry.tsomides@ncdenr.gov, 828-545-7057 The FINAL 2019 As -Built Baseline Monitoring Report, 2019 Record Drawings, and the 2020 AMP Summary and As -built can be accessed directly on the DMS SharePoint page here: https://urldefense.com/v3/_https://ncconnect.sharepoint.com/:f:/r/sites/deq_ext/dwm_irt/AsBuilt*20Repo rt*20*20Drawing/Fletcher*20100004?csf=1&web=1&e=ANiQua_;JSUIJQ! ! HYmSToo! KDOHtg4Fl M pAxbYGcXq 1XsYwVls-m9fy97g-uq Hy7fzJh3llo4C2TFSDTZJ-hyxRTJ E$ Please let me know if you have questions or call to discuss. Thanks Kim Browning Mitigation Project Manager USACE -Original Message ----- From: Browning, Kimberly D CIV USARMY CESAW (US) [mailto: Kimberly. D.Browning@usace.army.mil] Sent: Thursday, August 15, 2019 10:35 AM To: Tugwell, Todd J CIV USARMY CESAW (US) <Todd.J.Tugwell@usace.army.mil>; Davis, Erin B <erin.davis@ncdenr.gov>; Haupt, Mac <mac.haupt@ncdenr.gov>; Bowers, Todd <bowers.todd@epa.gov>; Wilson, Travis W. <travis.wilson@ncwildlife.org>; Leslie, Andrea J <andrea.leslie@ncwildlife.org>; Steve Kichefski <Steven.I.kichefski@usace.army.mil>; Jones, M Scott (Scott) CIV USARMY CESAW (USA) <Scott.Jones@usace.army.mil>; McLendon, C S CIV USARMY CESAW (US) <Scott.C.McLendon@usace.army.mil>; Wicker, Henry M Jr CIV USARMY CESAW (US) <Henry.M.Wicker.JR@usace.army.mil>; byron_hamstead@fws.gov; Crumbley, Tyler A CIV USARMY CESAW (USA) <Tyler.A.Crumbley@usace.army.mil> Cc: David Tuch<david@equinoxenvironmental.com>; Grant Ginn <Grant.Ginn@stantec.com>; Tsomides, Harry <harry.tsomides@ncdenr.gov>; Allen, Melonie <melonie.aIlen@ncdenr.gov>; Stanfill, Jim <jim.stanfill@ncdenr.gov>; Baumgartner, Tim <tim.baumgartner@ncdenr.gov>; Wiesner, Paul <paul.wiesner@ncdenr.gov> Subject: [External] RE: Notice of NCDMS Adaptive Management Plan Review / Fletcher Stream and Wetland/ Henderson County/SAW-2016-02205 (UNCLASSIFIED) CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to report.spam@nc.gov<mailto:report.spam@nc.gov> CalWTI . ,IW14YTIIro kw1iLXQWTIM,IW i7 Paul, The following comments were generated during the review period the Fletcher Stream and Wetland Adaptive Management Plan: DWR: The proposed corrective action states that regraded areas will be replanted using the original planting plan. However if site conditions are wetter than originally designed or the proposed regrading will expand areas of inundation, alternate species may need to be considered. DWR requests the final seed mix and table of planted species and quantities be included in the summary letter noted for the 30% credit release. USACE Please notify the IRT when the Adaptive Management Plan repair work is complete and provide the IRT with a final Record Drawing (formerly referred to as As -Built). With this correspondence, the IRT approves the attached proposal to address credit release on the site, and the request that DMS and the full delivery provider continue on the current monitoring trajectory with 2019 as Monitoring Year 1 (MY1). The attached memorandum describes the project credit release proposed by DMS. Please contact the Mitigation Office if you have any questions. Thanks Kim Kim Browning Mitigation Project Manager, Regulatory Division I U.S. Army Corps of Engineers 3331 Heritage Trade Dr, Ste. 105 1 Wake Forest, NC 27587 1 919.554.4884 x60 BUILDING STRONG (r) -Original Message ----- From: Browning, Kimberly D CIV USARMY CESAW (US) Sent: Monday, July 29, 2019 4:49 PM To: Tugwell, Todd J CIV USARMY CESAW (US) <Todd.J.Tugwell@usace.army.mil>; Davis, Erin B <erin.davis@ncdenr.gov>; Haupt, Mac <mac.haupt@ncdenr.gov>; bowers.todd@epa.gov; travis.wilson@ncwildlife.org; and rea.leslie@ncwildlife.org; Kichefski, Steven L CIV USARMY CESAW (US) <Steven.L.Kichefski@usace.army.mil>; Jones, M Scott (Scott) CIV USARMY CESAW (US) <Scott.Jones@usace.army.mil>; McLendon, C S CIV USARMY CESAW (US) <Scott.C.McLendon@usace.army.mil>; Wicker, Henry M Jr CIV USARMY CESAW (US) <Henry.M.Wicker.JR@usace.army.mil>; byron_hamstead@fws.gov; Crumbley, Tyler A CIV USARMY CESAW (USA) <Tyler.A.Crumbley@usace.army.mil> Cc: David Tuch<david@equinoxenvironmental.com>; Grant Ginn <Grant.Ginn@stantec.com>; Tsomides, Harry <harry.tsomides@ncdenr.gov>; Allen, Melonie <melonie.aIlen@ncdenr.gov>; Stanfill, Jim <jim.stanfill@ncdenr.gov>; Baumgartner, Tim <tim.baumgartner@ncdenr.gov>; Wiesner, Paul <paul.wiesner@ncdenr.gov> Subject: Notice of NCDMS Adaptive Management Plan Review / Fletcher Stream and Wetland/ Henderson County/SAW-2016-02205 (UNCLASSIFIED) CLASSIFICATION: UNCLASSIFIED The below referenced Adaptive Management Plan review has been requested by NCDMS. Per Section 332.8(o)(9) of the 2008 Mitigation Rule, this review follows the streamlined review process, which requires an IRT review period of 15 calendar days from this email notification. Please provide any comments by 5 PM on the 15-day comment deadline shown below. Comments provided after the 15-day comment deadline (shown below) may not be considered. At the conclusion of this comment period, a copy of all comments will be provided to NCDMS and the NCIRT along with District Engineer's intent to approve or disapprove this Final As -Built and initial credit release. Fletcher Stream and Wetland Site DMS Project # 100004 RFP: 16-006808 - Issued 2/15/16 Institution Date: 10/4/2016 - Full Delivery French Broad River Basin Cataloging Unit 06010105 Henderson County, North Carolina USACE Action ID: SAW-2016-02205 DWR# 16-1076 Proposed Mitigation Plan Assets: 10,011.3 SMUs 8.91 Riparian WMUs As -Built MYO Project Credits: 10,011.3 SMUs 8.91 Riparian WMUs Provider: EW Solutions LLC - EW Solutions LLC Contact: David Tuch, david@equinoxenvironmental.com , 828- 253-6856 Designer: Stantec - Stantec Contact: Grant Ginn, Grant.Ginn@stantec.com, (828) 449-1930 NCDEQ - DMS PM: Harry Tsomides, harry.tsomides@ncdenr.gov, 828-545-7057 Fletcher Str & Wtl_100004_AMP _July 2019.pdf Blockedhttps://ncconnect.sharepoint.com/sites/deq_ext/dwm_in/AsBuilt%20Report%20%20Drawing/Fletche r%20100004/Fletcher%2OStr%20&%2OWt1_100004_AMP_July%202019.pdf Fletcher Str & Wtl_100004_CR Memo —July 2019 Blockedhttps://ncconnect.sharepoint.com/sites/deq_ext/dwm_in/AsBuilt%20Report%20%20Drawing/Fletche r%20100004/Fletcher%2OStr%20&%2OWt1_100004_CR%2OMemo_July%202019.pdf 15-Day Comment Start Date: July 29, 2019 15-Day Comment Deadline: August 13, 2019 45-Day Credit Release Approval Deadline: September 13, 2019 The IRT visited the Fletcher Stream and Wetland Site on Tuesday July 23, 2019. The full delivery provider (EW Solutions) is proposing an adaptive management plan to minimize/ alleviate hydrologic trespass. The work will involve regrading areas of the wetland adjacent to Weston Creek and replanting those areas in the 2019 dormant season. At the site visit, the IRT proposed a 15-day review period for the adaptive management plan. The proposed adaptive management plan is attached for IRT review. In addition, the IRT requested a proposal to address credit release on the site. DMS and the full delivery provider request that the project continue on the current monitoring trajectory with 2019 as Monitoring Year 1(MY1). The attached memorandum describes the project credit release proposed by DMS. Kim Browning Mitigation Project Manager, Regulatory Division I U.S. Army Corps of Engineers 3331 Heritage Trade Dr, Ste. 105 1 Wake Forest, NC 27587 1 919.554.4884 x60 BUILDING STRONG (r) CLASSIFICATION: UNCLASSIFIED Cal WTI . ,IWIfyimro ►kallX0 41WTIW,IWu i7 EQUINOX balance through proper planning May 15, 2020 Harry Tsomides Project Manager NCDEQ Division of Mitigation Services 5 Ravenscroft Dr., #102 Asheville, NC 28801 Re: Adaptive Management Summary Packet Fletcher Site Mitigation Project, Henderson County French Broad River CU6010105 DMS Project ID No. 100004/ DEQ Contract#006997 Dear Mr. Tsomides, Construction at the Fletcher Mitigation Site (the Site) was completed in March of 2019. Throughout the life of the construction on the Weston Creek Reach there have been several significant rainfall events, including two 5-inch rainfall events that resulted in major flooding at the confluence with Hoopers Creek. The frequency of the overtopping events has been attributed to the exceptionally high rainfall in the region during the previous 18- 24 months. In April 2019 the adjacent property owner raised the concerns regarding floodwaters exiting the easement and causing damage to the agricultural field between the easement and Hoopers Creek. In response, the attached Adaptive Management Plan (AMP) was developed to address hydrologic trespass (Attachments 1 and 2). The initial regrading was completed November 2019. These activities include the regrading of the floodplain along the east and west flanks of the newly restored Weston Creek to better control and manage overbank flows (Attachment 3). The AMP grading operations were proposed in response to deviations from the original Fletcher Mitigation design which resulted in flood flows that originated within conservation easement exiting the site and impacting adjacent agricultural land. This grading plan consisted of constructing a shallow Swale and low berm, running south to north along both sides of Weston Creek, to contain and direct flood flows northward through the conservation easement. The grading along the western side continues through the narrowing of the conservation easement to a riprap base ditch. There, the outfall is stabilized as it flows into Weston Creek. The eastern side was also manipulated and directs flood flows into an existing ditch which connects to Weston Creek. 37 Haywood Street, Suite 100 Asheville NC 28801 828.253.6856 www.equinoxenvironmentat.com EQUINOX balance through proper planning The total area disturbed by the grading operations is approximately 6.6 acres, with 5.3 acres being within the wetland restoration area. A buffer was maintained adjacent to Weston Creek as to not affect any of the previously installed restoration features or constructed channel. The only exception to this is the floodplain outfall on the western side near the downstream end. The majority of the grading closely follows the proposed AMP design. In areas where slight departure was observed, it resulted in a more conservative grading approach with regard to mitigating flood flows affecting adjacent properties. Regraded areas were stabilized with temporary seed mix followed by permanent seed mix, Table 1. Repair planting and additional livestake install was finished on January 28, 2020, Table 2. Vegetation plot and groundwater gauge re -installation was concluded on January 30, 2020. On February 6, 2020 a storm event totaling 3.35 inches caused additional flooding to the Weston Creek Reach via an overbank event from Hoopers Creek. The event caused minor impacts to the adjacent agricultural area. Work was halted and a repair plan was developed to address the remaining issues with hydrologic trespass. These repairs targeted three key areas along the Weston Creek reach. A low swale was installed along the easement boundary near the middle of the Weston Creek reach. This swale was designed to divert draining floodwaters within the easement and prevent trespass. The elevation of the berm along the lower section of Weston Creek was regraded to an elevation of 2077 ft, the preconstruction elevation. A log hedgerow was installed along the berm to buffer the impact of high flows from Hoopers Creek. A log deflector wall was installed on the upstream bank at the mouth of Weston Creek. All of these repair areas were seeded, live staked, and re -planted (Attachment 3). Repairs to the Weston Creek reach, replanting, and live staking were concluded on February 28, 2020. As a result of the need for an Adaptive Management Plan, we are revising the delivery schedule of MY1 — MY7 monitoring and closeout reports (Table 3). During October 2019 - February 2020 we collected monitoring data for the entire Fletcher mitigation site (with the exception of groundwater gauge data from monitoring wells in the wetland re-establishment area). We will be including this data in report form as an addendum to the MY1 report at the end of 2020. The primary objective of this is to simplify the monitoring and avoid having separate MY1 monitoring reports for Weston and the remainder of the Fletcher mitigation project. It is our intention that after MY6, if all criteria are being met, we will conclude monitoring of the Fletcher mitigation project area other than Weston Creek Reach 1A and 113 and the wetland re-establishment area. In this case, the MY7 monitoring report would consist only of data for Weston Creek Reach 1A and 1B and the wetland re-establishment area. Tables 4 and 5 illustrate the proposed yearly monitoring schedule and components for those specific monitoring parameters. 37 Haywood Street, Suite 100 Asheville NC 28801 828.253.6856 www.equinoxenvironmentat.com EQUINOXbalance through proper planning Sincerely, 4-lva LL�" Danvey Walsh Environmental Scientist Equinox 37 Haywood Street Asheville, NC 28801 Office: 828-253-6856 ext. 201 Table 1. Permanent and Temporary Seed Mix, Fletcher Mitigation Site, Weston Reach R1 and R2 COMMON NAME SCIENTIFIC NAME SEEDING DENSITY (lbs/acre) % MIX PERMANENT MIX Switchgrass Panicum virgatum 6 15 Broom Sedge Andropogon virginicus 6 15 Indian Grass Sorghastrum nutans 8 20 Eastern Gamma Grass Tripsacum dactyloides 10 25 Joe-Pye Weed Eupatorium fistulosum 4 10 Deer tongue Panicum clandestinum 6 15 Tota is 40 100% TEMPORARY PLANTING DATES SEED TYPE (lbs/acre) Jan-Mayl Wheat or Rye Grain 50 Mayl, August 15 Brown Top Millet 20 Aug15-Dec 31 Wheat or Rye Grain 50 37 Haywood Street, Suite 100 Asheville NC 28801 828.253.6856 www.equinoxenvironmentat.com w EQUINOX Abalance through proper plonning Table 2. Table 3. Planted Woody Stems, Fletcher Mitigation Site, Weston Reach R3 and R2 Common Name Scientific Name Amount Blackwillow Salix nigra 500 Boxelder Acer negundo 400 y Green ash Fraxinus pennsylvanica 800 Ironwood Carpinus caroliniana 300 ~ Pawpaw Asminia triloba 100 Sycamore Platanus occidentalis 800 Tulip poplar Liriodendron tulipifera 800 Winterberry Ilex verticillata 150 Buttonbush Cephalanthusoccidentalis 1100 Northern spicebush Lindera benzoin 300 3 s Silky dogwood Cornus amomum 1200 Silky willow Salix sericea 500 Tag alder Alnus serrulata 500 Elderberry ISambucus canadensis 1 300 Total 7750 Deliverable Delivery Date Sribmit Final lMlonitoring Report#1 November2020 Submit Final lMlonitoring Report#2 November2021 Submit Final Monitoring Report#3 November2022 Submit Final tMlonitoring Report#4 November2M Submit Final Monitoring Report#5 November2-024 Submit Final Monitoring Report#6 November2.0 5 Submit Final Monitoring Report#7 November2-026 Project Closeout April2027 37 Haywood Street, Suite 100 Asheville NC 28801 828.253.6856 www.equinoxenvironmentat.com EQUINOX balance through proper planning Table 4. Site monitoring plan schedule summary Calendar Year 2019 2020 2021 2022 2023 2024 2025 2026 2027 IL Monitoringyear Pre-MY1 MY1 MY2 MY3 MY4 MY5 MY6 MY7 Close Out Weston Creek stream no and wetlands monitoring year year year year4* years year6* year? (Adaptive adaptive Management Area) manageme no entire site monitoring if performance Remainder of Site year year year3 year4* years year6* year7 standards have been met * Limited Monitoring per NCIRT 2016 Guidance; see Table 1 for further detail 37 Haywood Street, Suite 100 Asheville NC 28801 828.253.6856 www.equinoxenvironmentat.com EQUINOX balance through proper planning Table 5. Updated Monitoring Plan Components Parameter Method Quantity Monitoring Year Frequency Notes Fletcher Reach 1 (3) Fletcher Reach 2 (4) Years Riffle Cross Sections Raccoon Reach 1 (1) Pre-MY1, 1, 2,4 & 6 Coates Reach 1 (3) Weston Reach 1 (3) 1, 2, 3, 5 & 7 Dimension Fletcher Reach 1 (2) Fletcher Reach 2 (4) Years Bank pins will be Pool Cross Sections Raccoon Reach 1 (1) Pre-MY1, 1, 2,4 & 6 installed only in Coates Reach 1 (2) areas of concern Weston Reach 1 (3) 1, 2, 3, 5 & 7 Bank pins will be Pattern Visual Inspection None Bi-annual installed only in areas of concern Additional profile measurements may be required if Profile Visual Inspection None Bi-annual problems are identified during the monitoring period Fletcher Reach 1 (3) Fletcher Reach 2 (4) Years Substrate Pebble Counts Coates Reach 1 (3) Pre-MY1, 1, 2,4 & 6 Weston Reach 1 (3) 1, 2, 3,5 & 7 Fletcher Reach 1 (1) Fletcher Reach 2 (1) Continuous Gauge Raccoon Reach 1(1) The devices will be Coates Reach 1 (1) inspected on a semi Surface Water Weston Reach 1 (1) annual basis to Bi-annual Hydrology document the Fletcher Reach 1(1) occurrence of Fletcher Reach 2 (1) bankfull events on Crest Gauge Coates Reach 1 (1) the project Weston Reach 1 (1) Data will be Groundwater downloaded on a Groundwater Gauges Weston R1 (11) 1, 2, 3, 4, 5, 6, 7 monthly basis Hydrology during the growing season 37 Haywood Street, Suite 100 Asheville NC 28801 828.253.6856 www.equinoxenvironmentat.com EQUINOX balance through proper planning Table 5 cont. Updated Monitoring Plan Components continued Fletcher Reach 1 (6) Fletcher Reach 2 (7) Raccoon Reach 1 (2) Pre-MY1, 1, 2, 3, 4, 5, 6 Coates Reach 1 (4) Vegetation Years Vegetation Vegetation Plots monitoring will follow CVS protocol Weston Reach 1 (7) 1, 2, 3, 4, 5, 6 & 7 Approximate locations of invasive Invasive and and nuisance nuisance vegetation Visual N/a Semi-annual vegetation and the occurrence of beaver dams will be mapped Locations of fence damage, vegetation Project boundary Visual N/a Semi-annual damage, boundary encroachments, etc. will be mapped. Attachments: 1. July 29, 2019 Memorandum to Todd Tugwell 2. Adaptive Management Plan -Fletcher Mitigation Site 3. 2020-05-14Adaptive Management As -Built 37 Haywood Street, Suite 100 Asheville NC 28801 828.253.6856 www.equinoxenvironmentat.com EQUINOXbalance through proper planning Attachment 1: July 29, 2019 Memorandum to Todd Tugwell 37 Haywood Street, Suite 100 Asheville NC 28801 828.253.6856 www.equinoxenvironmentat.com ROY COOPER Governor MICHAEL S. REGAN Secretary TIM BAUMGARTNER Director MEMORANDUM: NORTH CAROLINA Environmental Quality TO: Todd Tugwell, Chair, Interagency Review Team (IRT) FROM: Paul Wiesner, DEQ - DMS Western Regional Supervisor CC: David Tuch, EW Solutions Grant Ginn, Stantec Harry Tsomides, DMS - Project Manager Melonie Allen, DMS — Credit Release Coordinator Jim Stanfill, DMS — Asset Manager Tim Baumgartner, DMS — Division Director SUBJECT: Fletcher Stream and Wetland Site - Credit Release Schedule DMS # 100004 USACE Action ID# SAW-2016-02205 DWR# 16-1076 Henderson County, North Carolina DATE: July 29, 2019 On July 23, 2019, representatives from DMS, EW Solutions (Full Delivery Provider), Stantec, and the IRT met on the project site to discuss EW Solutions' & Stantec's proposed Adaptive Management Plan (dated July 2, 2019). The Adaptive Management Plan has been developed in order to address a potential hydrologic trespass issue identified on the site. During the site visit, the IRT was agreeable to the proposed repair work. The Adaptive Management Plan notes; "After regrading is complete, six vegetation monitoring plots and ten groundwater gauges will be re -installed and the monitoring monuments will be resurveyed. Additionally, ground surface topography of the regraded areas will be re -surveyed. Since the proposed Adaptive Management Plan will impact existing ground surface and vegetation, it is proposed that impacted wetland gauge and vegetation plot monitoring be extended by one additional year. It is proposed that all stream reaches and vegetation monitoring stations that are not affected by this effort continue on the present monitoring schedule. " At the site meeting, the IRT requested a proposal to address the project's Credit Release Schedule. A copy of the asset table and asset map from the 2019 As -Built Baseline Monitoring Report are attached. DMS and EW Solutions do not anticipate any mitigation credit changes from the proposed Adaptive NOH CA NwD_E Q�I D � t Enw,o ,e Ia,allty North Carolina Department of Environmental Quality I Division of Mitigation Services 217 W. Jones Street 1 1652 Mail Service Center I Raleigh, North Carolina 27699-1652 919.707.8976 Management Plan work. Upon IRT review and approval, the proposed Adaptive Management Plan work will commence immediately. Re -planting will be completed no later than the end of 2019. The proposed work will impact 100% of the project's COLD stream credits (2,758 SMUs) and 100% of the project's riparian WETLAND credits (8.91 WMUs). 100% of the project's COOL stream credits (7,253.30 SMUs) will not be impacted by the proposed Adaptive Management work in anyway. The COOL stream credits represent 73% of the project's total stream credits. DMS and EW Solutions request that the project continue on the current monitoring trajectory with Credit Release proposed as follows: • The initial 30% credit release (Year 0/ As -Built) for the entire site (10,011.3 SMUs & 8.91 WMUs) will be requested upon completion of the proposed Adaptive Management Plan work and submittal of a summary letter and re -surveyed ground surface topography of the regraded areas (provided by EW Solutions). The IRT initiated the review of the final As -Built report on June 25, 2019. DMS will hold the full 30% credit release request until the IRT has also reviewed the completion summary letter and revised maps. • 2019 will represent Monitoring Year 1 (MY1). A MY1 report will be completed by EW Solutions and will include all of the information associated with the completed Adaptive Management Plan work. DMS will provide the final MY1 report to the IRT in 2020 per the standard credit release process. • DMS will request the Year 1 Monitoring credit release for COOL stream credits only at the 2020 credit release meeting. • The MY1 credit release request for all COLD stream credits and all riparian WETLAND credits will be delayed by 1-year. This 1 year off set will continue until the IRT agrees to release all project credits concurrently OR the site reaches Monitoring Year 8 (MY8). • The 10% Stream Bankfull Standard will be requested upon successful completion of the success criteria on all project streams as specified in the IRT approved mitigation plan. If you have any questions, please contact me at any time at (828) 273-1673 or email me at paul.wiesner&ncdenr. og_v . Sincerely, Paul Wiesner Western Regional Supervisor North Carolina Department of Environmental Quality Division of Mitigation Services 828-273-1673 Mobile paul.wiesnerkncdenr. og_v Attachment: Fletcher Stream and Wetland Asset Table and Asset Map NORTHCAROLINAD_E Q�/ Department at Emkoomental 0w111V North Carolina Department of Environmental Quality I Division of Mitigation Services 217 W. Jones Street 1 1652 Mail Service Center I Raleigh, North Carolina 27699-1652 919.707.8976 Table 1. Project Mitigation Assets and Components Fletcher Mitigation Site Project Segment Existing Footage or Acrea Mitigation Plan Footage or Acreage Mitigation Category Restoration Level Priority Level Mitigation Ratio (X:1) Mitigation Plan Credits* As -Built Centerline Footage or Acreage^ Comments Fletcher Creek la 607 461 Cool EII NA 2.5 184.400 461 Fletcher Creek lb 498 377 Cool R PI 1.0 377.000 378 Fletcher Creek lc 1,791 1,540 Cool R PI 1.0 1,540.000 1,507 Less 51' for crossing Fletcher Creek 2a 1,587 1,296 Cool R PI/ PII 1.0 1,296.000 1,290 Less 33' for utility crossing; Less than 30' buffer for 86 LF Fletcher Creek 2b 1,586 1,470 Cool R PII 1.0 1,470.000 1,558 Less 33' for outlet protection and 51' and 73' for 2 crossings Raccoon Branch la 489 489 Cool P NA 10.0 48.900 489 .001 ac temporary impact to Wetland Raccoon Branch lb 461 461 Cool P NA 10.0 46.100 461 .006 ac temporary impact to Wetland B Raccoon Branch lc 208 153 Cool EII NA 2.5 61.200 153 Less 53' for crossing; Stream length not included in wetlands Raccoon Branch Id 354 448 Cool R PI 1.0 448.000 440 Pine Branch 1 380 299 Cool P NA 10.0 29.900 299 Coates Branch Reach la 292 282 Cool EII NA 2.5 112.800 282 Coates Branch Reach lb 598 606 Cool R PI 1.0 606.000 598 .016 ac temporary impact to Wetland D Coates Branch Reach lc 727 708 Cool R PI 1.0 708.000 702 Less 44' for crossing Coates Branch Reach Id 318 325 Cool R PI 1.0 325.000 321 Weston Creek In 1,645 1,954 Cold R PI 1.0 1,954.000 1,916 Less 29' for ROW and outlet protection Weston Creek lb 708 804 Cold R PI 1.0 804.000 798 Wetland A 0.03 0.03 RNR Enh NC NC NC 0.001 ac temporary impact to Wetland A Wetland B 0.11 0.11 RNR Enh NC NC NC 0.006 ac temporary impact to Wetland Wetland D 0.05 0.05 RNR Eh NC NC NC 0.016 ac temporary impact to WetlandA Wetland E 8.910 8.9 RNR Re -Est 1.0 8.910 8.910 * Mitigation plan credits account for breaks in conservation easements and are based on design stream stationing and taken from the approved mitigation plan. Mitigation plan credits are the same as the approved mitigation plan. ^ Based on centerline calculations from the as -built survey, accounts for breaks in conservation easement and utility right-of-ways. Project Credits Restoration Level Stream Riparian Wetland Non -Rip Coastal Warm Cool Cold Riverine Non-Riv Wetland Marsh Restoration 6770.000 2758.000 - Re-establishment 8.910 Rehabilitation - Enhancement Enhancement I - Enhancement II 358.400 Creation Preservation 124.900 - Total Credits 7253.300 2758.000 8.910 i Project credits reflect the sum of credits outlined in the approved mitigation plan. Fletcher Stream and Wetland Mitigation Site 13 Equinox NCDMS Project No. 100004 Baseline Monitoring Document Monitoring Year 0 of 7 Figure 2. Asset Map EQUINOXbalance through proper planning Attachment 2: Adaptive Management Plan -Fletcher Mitigation Site 37 Haywood Street, Suite 100 Asheville NC 28801 828.253.6856 www.equinoxenvironmentat.com ADAPTIVE MANAGEMENT PLAN Fletcher Mitigation Site Henderson County, NC Project Number: 100004 Contract Number: 006997 RFP: 16-006808 French Broad River Basin Cataloging Unit # 06010105 Prepared for: North Carolina Department of Environmental Quality Division of Mitigation Services 1652 Mail Service Center Raleigh, NC 27699-1652 July 2, 2019 Fletcher Mitigation Site July 2, 2019 DMS# 100004 1.0 ISSUE OF CONCERN Construction of the Fletcher Mitigation Site (the Site) was completed in March of 2019. Prior to the completion date, grading activities were completed on the wetland area adjacent to Weston Creek in September of 2018. Since the completion of grading activities for the wetlands there have been several significant rainfall events, including two 5 in rainfall events that resulted in major flooding on the downstream receiving waters of Hooper's Creek. The frequency of the overtopping events has been attributed to the exceptionally high rainfall in the region during the previous twelve to eighteen months. The total rainfall in the Fletcher area during the preceding year has been over 80 inches which is 33 inches above the average annual rainfall for 47 inches. Overbank flow has occurred as expected for the higher rainfall events. However, on April 3, 2019 the adjacent property owner raised the concern that flood flows were exiting the Site and flowing onto his property to a higher degree than in the past. Specifically, floodwaters were exiting the easement at a location along the western boundary (see Figure 1) and then flowing north along the boundary line and into field between the easement and Hooper's Creek. He expressed concern that this additional flow was damaging part of his fields and would result in some of the area being unusable for crop production. This Adaptive Management Plan has been developed in order to address the issue of this potential hydrologic trespass. 2.0 PROPOSED CORRECTIVE ACTION The adjacent property owner requested that ditches be installed within the conservation easement to collect the flood flows prior to entering his property. However, an internal examination of the as -built surface was conducted to develop a better understanding of the problem. This examination determined that deviations in the constructed surface from the design surface have potentially contributed to this issue. Some of the deviations, while being relatively minor and within construction tolerances, have the potential to shift a portion of the flood flows from the east floodplain to the west floodplain. However, a significant deviation occurs on the west floodplain which may be contributing significantly to this issue. This deviation created a linear depression running northward which may be capturing additional flood flows and routing them out of the easement. It is possible this linear depression is the remnant of the haul route that was in place during the construction of the downstream end of Weston Branch and that final grading out of the haul route never corrected any settling or shifting of the landscape along this corridor. The proposed plan (see Figure 2) is to regrade portions of the floodplain to address this issue. This regrading will include correcting the deviations from the original design grading plan and also will provide for additional grading that will move flood flows northward through the easement without exiting to the west. The flood flows will be directed to the northern boundary of the wetland area Fletcher Mitigation Site DMS# 100004 and then conveyed along the west side of Weston Creek. At the narrowest point the floodplain conveyance grading will have a top width of approximately 35 ft and a depth of approximately 1 foot. This will have a capacity to carry the 10-year flood flow under fully vegetated conditions. Over time as mature vegetation begins to shade out the herbaceous layer flow conveyance should improve. Upstream of the easement constriction the flood conveyance area will be expanded to improve storage and retention of flood flows. The flood conveyance grading will need to extend to the lower end of Weston Creek in order to provide for continuation of the flood conveyance and tie the grades into the existing stream. The regrading effort will affect approximately 4 acres of the wetland restoration area. The change in surface elevation will generally be less than 6 inches, with a few small areas changing up to 12 inches. No regrading will occur within 10 feet of the restored Weston Creek and all grading will be within the tolerances allowed to maintain wetland hydrology. The area impacted by regrading activities will be stabilized with temporary and permanent seed mix and replanted in the fall using the specifications of the original planting plan. 3.0 PROPOSED MONITORING REVISION After regrading is complete, six vegetation monitoring plots and ten groundwater gauges will be re -installed and the monitoring monuments will be resurveyed. Additionally, ground surface topography of the regraded areas will re -surveyed. Since the proposed Adaptive Management Plan will impact existing ground surface and vegetation, it is proposed that impacted wetland gauge and vegetation plot monitoring be extended by one additional year. It is proposed that all stream reaches and vegetation monitoring stations that are not affected by this effort continue on the present monitoring schedule. Fletcher Mitigation Site DMS# 100004 oo 4J a 83 °o E O w w ° o m o a c N U > a U 2 S U U I < 52 E�E`o 0 a U 0 z U 0 z Project Number: 172621093 4 a i �z 0 0� z az f O U > (D a Z Q H Q w RTS SGG SGG 19.06.25 Dwn. Chkd. Dsgn. YY.MM.DD Revision Sheet 0 �J o a 4/080 1�7 ow-ow-ow-ow \� ^ , O 2080 \ \ \ 2081� ♦ 20794/1 \ O�, �\ O y AS -BUILT \ WE�STON CREEK Oil/ \ 2079 P �\ p y \ 2080 p 2078 �\ \ \[/ %��2p77 �\ o 2079 O� \ 2076 A �v y �� °2078 o\S \� y \� plb y \ p� s Oy,\ Sb / r 70 0 70 210 SCALE IN FEET 4J 2 a 83 °o on£9 - w �4J 00 0� E Z� - sa° oa °_ s <o a U O z O O 0 x Project Number: 172621093 RTS SGG SGG 19.06.25 Dwn. Chkd. Dsgn. YY.MM.DD Revision Sheet 0 �- EQUINOX balance through proper plonninp Attach me nt3: 2020-05-14 Adaptive Manage mentAs-Built 37 Haywood Street, Suite 100 Asheville NC 28801 828.253.6856 www.equinoxenvironmentat.com I / ROADJACKN � ROAD 1 II x� 2oaQ 4\ CROSS SECTION CROSS SECTION 16 i b\ b b\ \ b b\ b b b C \4b \b C \bb\ FLOODPLAIN REGRADING VP6 �\ e\ Q N/ \ D � 20T9 7 �- AS -BUILT � WESTON CREEK a I o O ap o O b `L o V\b 2 { --__w CS \b y \b \b LOCATION KEY GRASS SWALE W/ ADJACENT BERM �\ AMF' AJ \ ~— CONTOU \� V AMP DE e MONITORING FI FLOODPLAIN \ REGRADING ��� ® VEG PLI VP5 rV A ¢ Q GROUNC GAUGE 'P078 \c \ SURFACI �\ GAUGE FLOOD CONTROL RAIN GP ¢BERM CROSS CROSS SECTION 17 CROSS SECTION 18 b VP4 0 \b b y \b \ �0\fib VP3 \b lb \ b b / b \b o b\ \� �O b\ b\ VP2 b\\ b\ b\© j A 70 0 70 210 SCALE IN FEET ADDED BRUSH HEDGE ROW REINFORCED BERM N AI�Yilxiri[�Pik: SECTION 20 AS -BUILT �IPRAP f OUTFALL BRUSH R WALL b\\ b� tl / 1C o ay mo'T S o E o f ll � 8 Q U 0 O m o 1. Project Number: 172621093 RT$ CME SGG 20.05.14 Dwn. Chkd. Dsgn. YY.MM.DD Revision Sheet 1 1 Mitigation Project Name DMS ID River Basin Cataloging Unit County Fletcher Stream and Wetland Site 100004 French Broad 06010105 Henderson Signature of Official Approving Credit Release USACE Action ID DWR Permit Date Project Instituted Date Prepared Stream/Wet. Service Area 2016-02205 2016-1076 10/4/2016 4/28/2020 French Broad 06010105 1 - For NCDMS, no credits are released during the first milestone 2 - For NCDMS projects, the initial credit release milestone occurs when the as -built report (baseline monitoring report) has been approved by the NCIRT and posted to the NCDMS Portal, provided the following criteria have been met: 1) Approved of Final Mitigation Plan 2) Recordation of the preservation mechanism, as well as a title opinion acceptable to the USACE covering the property. 3) Completion of all physical and biological improvements to the mitigation site pursuant to the mitigation plan. 4) Receipt of necessary DA permit authorization or written DA approval for projects where DA permit issuance is not required. 3 - A 10% reserve of credits is to be held back until the bankfull event performance standard has been met. Credit Release Milestone Cool Stream Credits Project Credits Scheduled Releases % Proposed Releases % Proposed Released # Not Approved # Releases Approved Credits Anticipated Release Year Actual Release Date 1 - Site Establishment N/A N/A N/A N/A N/A N/A N/A 2 - Year 0 / As -Built 30.00% 30.00% 2,175.990 0.000 2,175.990 2020 4/28/2020 3 - Year 1 Monitoring 10.00% 2021 4 - Year 2 Monitoring 10.00% 2022 5 - Year 3 Monitoring 10.00% 2023 6 - Year 4 Monitoring 5.00% 2024 7 - Year 5 Monitoring 10.00% 2025 8 - Year 6 Monitoring 5.00% 2026 9 - Year 7 Monitoring 10.00% 2027 Stream Bankfull Standard 10.00% Totals 2,175.990 Total Gross Credits 7,253.300 Total Unrealized Credits to Date 0.000 Total Released Credits to Date 2,175.990 Total Percentage Released 30.00% Remaining Unreleased Credits 5,077.310 Credit Release Milestone Cold Stream Credits Project Credits Scheduled Releases % Proposed Releases % Proposed Released # Not Approved # Releases Approved Credits Anticipated Release Year Actual Release Date 1 - Site Establishment N/A N/A N/A N/A N/A N/A N/A 2 - Year 0 / As -Built 30.00% 30.00% 827.400 0.000 827.400 2020 4/28/2020 3 - Year 1 Monitoring 10.00% 2021 4 - Year 2 Monitoring 10.00% 2022 5 - Year 3 Monitoring 10.00% 2023 6 - Year 4 Monitoring 5.00% 2024 7 - Year 5 Monitoring 10.00% 2025 8 - Year 6 Monitoring 5.00% 2026 9 - Year 7 Monitoring 10.00% 2027 Stream Bankfull Standard 10.00% Totals 827.400 Total Gross Credits 2,758.000 Total Unrealized Credits to Date 0.000 Total Released Credits to Date 827.400 Total Percentage Released 30.00% Remaining Unreleased Credits 1,930.600 Page 1 of 3 Mitigation Project Name DMS ID River Basin Cataloging Unit County Fletcher Stream and Wetland Site 100004 French Broad 06010105 Henderson USACE Action ID DWR Permit Date Project Instituted Date Prepared Stream/ Wet. Service Area 2016-02205 2016-1076 10/4/2016 4/28/2020 French Broad 06010105 Credit Release Milestone Riparian Credits Project Credits Scheduled Releases % Proposed Releases °/u Proposed Released # Not Approved # Releases Approved Credits Anticipated Release Year Actual Release Date 1 - Site Establishment N/A N/A N/A N/A N/A N/A N/A 2 - Year 0 / As -Built 30.00% 30.00% 2.673 0.000 2.673 2020 4/28/2020 3 - Year 1 Monitoring 10.00% 2021 4 - Year 2 Monitoring 10.00% 2022 5 - Year 3 Monitoring 15.00% 2023 6 - Year 4 Monitoring 5.00% 2024 7 - Year 5 Monitoring 15.00% 2025 8 - Year 6 Monitoring 5.00% 2026 9 - Year 7 Monitoring 10.00% 2027 Stream Bankfull Standard N/A N/A N/A N/A N/A N/A N/A Totals 2.673 Total Gross Credits 8.910 Total Unrealized Credits to Date 0.000 Total Released Credits to Date 2.673 Total Percentage Released 30.00% Remaining Unreleased Credits 6.237 Notes Contingencies (if any) Project Quantities Mitigation Type Restoration Type Physical Quantity Cold Stream Restoration 2,758.000 Cool Stream Restoration 6,770.000 Cool Stream Enhancement II 896.000 Cool Stream Preservation 1,249.0 00 Riparian Restoration 8.910 Stream Stream Restoration Riparian Debits Restoration Equivalent Restoration Credits Credits Beginning Balance (mitigation credits) 9,886.400 124.900 8.910 Released Credits 2,965.920 37.470 2.673 Unrealized Credits 0.000 0.000 0.000 DWR DCM Permit Owning Program Req. Id TIP # Project Name USACE Permit # Permit # # NCDOT Stream & REQ-002570 R-0619E NC 281 Improvements 2004-30595 2005-0071 297.000 Wetland ILF Program NCDOT Stream & REQ-005126 B-4034 Bridge 124 on NC 151 2009-01502-311 2009-0838 439.000 Wetland ILF Program Page 2 of 3 Mitigation Project Name DMS ID River Basin Cataloging Unit County Fletcher Stream and Wetland Site 100004 French Broad 06010105 Henderson USACE Action ID DWR Permit Date Project Instituted Date Prepared Stream/Wet. Service Area 2016-02205 2016-1076 10/4/2016 4/28/2020 French Broad 06010105 Statewide Stream & REQ-005439 Asheville Airport 2010-00036 2007-1841 60.013 Wetland ILF Program Expansion Phases 1 and 2 Roundabout Intersection - NCDOT Stream & REQ-005733 R-5524C SR 3526/SR 1419/SR 2013-00633 102.530 Wetland ILF Program 1420 NCDOT Stream & REQ 005929 R 2518A US 19 Improvements 2007-02197-300, 2007-1134 91.400 Wetland ILF Program 2007-02197-357 NCDOT Stream & REQ-007164 U-3301 NC 63 Improvements 2014-01633 2016-0401 224.899 Wetland ILF Program NCDOT Stream & REQ-007990 I-4700A & B I-26 Improvements - NC 2013-01883 2018-1645 1,448.091 Wetland ILF Program 280 to I-40 Roundabout Intersection - NCDOT Stream & REQ-005733 R-5524C SR 3526/SR 1419/SR 2013-00633 37.470 Wetland ILF Program 1420 NCDOT Stream & REQ-002621 R-2813B NC 146 Widening 2007-03084-311 0.380 Wetland ILF Program NCDOT Stream & REQ-005502 R-5207B SR 1006 Widening 2012-00114 0.030 Wetland ILF Program NCDOT Stream & REQ-005712 R-5207A SR 1006 Widening 2013-00411 0.020 Wetland ILF Program NCDOT Stream & REQ-005767 B-5149 Bridge 38 on SR 1574 2013-00665 0.040 Wetland ILF Program over Clear Creek NCDOT Stream & REQ-006907 I-5504 I-26 at NC 191 2014-02016 2016-1157 0.020 Wetland ILF Program Interchange NCDOT Stream & REQ-007163 U-3301 NC 63 Improvements 2014-01633 2016-0401 0.070 Wetland ILF Program NCDOT Stream & REQ-007989 I-4700A & B I-26 Improvements - NC 2013-01883 2018-1645 1.560 Wetland ILF Program 280 to I-40 NCDOT Stream & REQ-008221 I-4400BB I-26 Improvements - US 2013-01883 2018-1645 0.050 Wetland ILF Program 64 to US 25 Business NCDOT Stream & REQ-008224 I-4400C I-26 Improvements - US 2013-01883 2018-1645 0.413 Wetland ILF Program 25 Business to NC 280 NCDOT Stream & REQ-004665 R-2518A US 19 Improvements 2007-02197-300, 2007-1134 0.090 Wetland ILF Program 2007-02197-357 Total Credits Debited 2,662.993 37.470 2.673 Remaining Available balance (Released credits) 302.987 0.000 0.000 Remaining Credits (Unreleased credits) 6,920.480 87.430 6.237 Page 3 of 3