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HomeMy WebLinkAbout20220861 Ver 1_9-12-2022 Info Received_20220912Annino, Amy M From: Tyson Kurtz <tyson@cwenv.com> Sent: Monday, September 12, 2022 11:41 AM To: Annino, Amy M Subject: RE: [External] FW: Crabtree Mountain Road Campground NWP 39 - Action ID SAW-2022-01384 Attachments: Fig 5 Wetland and Stream Impacts Rev - 11x17 - Highlighted.pdf; Stream Impact Table with Culvert Lengths.pdf, Crabtree Mountain Road Campground.pdf, Crabtree Road Cam pground-Certificate of Coverage for Phase 1.pdf Follow Up Flag: Follow up Flag Status: Flagged CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to Report Spam. Amy, Please see the responses to your comments and question below in RED. Please also see the referenced attachments. Wetland names referenced below are on the PJD request delineation map that was included in Appendix A of the original submittal and again on the email dated July 19, 2022 around 4pm after the JD visit (you were cc'd). Thank you, Tyson Kurtz Biologist 0: 828-698-9800 ext. 302 1 C: 610-310-8744 From: Annino, Amy M <amy.annino@ncdenr.gov> Sent: Wednesday, August 17, 2022 3:28 PM To: Tyson Kurtz <tyson@cwenv.com> Subject: RE: [External] FW: Crabtree Mountain Road Campground NWP 39 - Action ID SAW-2022-01384 Hi Tyson, No additional work should be conducted at this site until DWR has issued the 401. Please see my additional information request below. Feel free to contact me with any questions. On June 22, 2022, the Division of Water Resources (Division) received your application requesting a 401 Water Quality Certification from the Division for the subject project. On June 30, 2022, the Division received the required fee. Upon review of that response, the Division has determined that your application is incomplete and cannot be processed. The application is on -hold until all of the following information is received: PCN Impact Table • DWR requests that you include information in a table showing the original culvert length for sites where culverts were replaced and whether they were lengthened or shortened. o The stream impact table from Section C3 of the submitted permit application has been updated to show lengths of existing culvert replacements, where applicable (attached). • Please also indicate for each impact if the work has already been performed and whether the work was performed in the dry to meet DWR conditions. o All impacts to wetland and streams on site have been conducted except for bank stabilization impacts (S9-S13), which will be conducted prior to October 15. Culvert installations were not conducted in the d ry. Impact map • Please enumerate all wetland and stream impacts including fill / dissipater pads/ etc. on the site plans and clearly label all impacts (Wetland/ Stream Impact 1, etc.). The Division recommends highlighting by hatching or shading all impacts areas for temporary impact areas and permanent impact areas. [15A NCAC 02H .0502??].0502(a)(9) o Refer to Figures 5.0 - 5.11 of the supplemental information submitted via email on July 22, 2022. Figures were reattached with impacts highlighted. All impacts were identified as S1, W1, etc. and highlighted with red/crosshatching in the original submittal. The stream channels are not shown on the site plan. Please explain why and/or provide an overlay showing jurisdictional streams on the site plan detail sheets with proposed impacts. [15A NCAC 02H .0502??].0502(a)(9) o All the delineated streams and wetlands were shown on Figure 5.0-5.10 of the original submittal. The revised figures 5.0-5.11 of the July 22, 2022, supplemental information, included one change in the delineation. The stream call at former stream impact location S5 was changed to linear wetland and is now shown as wetland impact W6. Culvert impact length As indicated under Item C.3.g (Page 13) of the USACE PCN Complete Help File "The stream impact length should be measured along the centerline of the stream. When proposing a culvert, the impact length is generally greater than the length of the culvert and associated dissipater since the existing stream usually has some sinuosity (curvature)." Please verify or correct the stream impact length as indicated on the PCN form. Please provide updated drawings and application materials (including Table of Impacts in the PCN form) that properly show the length of impacts to the jurisdictional stream. [15A NCAC 02H .0502(a) and (c)](a)(9)] o The stream impact length was calculated along the stream centerline. As shown in the original submittal and again on the revised Figures 5.0-5.11 of the July 22, 2022, supplemental information, the stream impact length is longer than the installed culvert length or the difference in length of culvert replacements. Figures 5.0-5.11 are attached with highlighted stream impacts labels that include the culvert replacement details . Coir matting • Please address how the requirement to use coir matting adjacent to streams and wetlands will be met per the required Condition 11.6 of the attached GC4263. o Matting with plastic mesh or plastic twine was not used along stream banks or within wetlands. Grade control Please provide calculations to show the outlet velocity from the proposed 81 LF culvert outlet(s) discharging into the wetlands W6 and W4. A non -erosive velocity of two feet per second or less must be achieved for the peak flow from the 10-year storm. [15A .02B .0231] o The culvert outlet from Wetland Impact W6 in Wetland WHH has a T-Outlet structure with rip rap on either side to dissipate energy prior to discharging into the wetland. The T-Outlet structure was not shown on Figure 5.5, but a generalized typical detail of the installed energy dissipator is included below. This impact area (W6) accounted for the area of this structure. ■ *riprap dissipater pads installed (on site) at each side of the t-outlet are not shown in the detail. o Wetland impact W4 accounts for a rip rap energy dissipater below the culvert outlet to protect Wetland WKK. This was shown in the original submittal and again on Figure 5.5 of the supplemental information submitted via email on July 22, 2022. o Outlet velocities were designed to match or to lessen outlets velocities of pre -construction culverts. 0 15A NCAC .02B .0231 does not state any requirements for the referenced discharge velocity into wetlands. The applicant believes the energy dissipaters installed at the culvert outlets at Wetland Impact areas W6 and W4 provide protection to the receiving wetlands. The Corps and NC WRC saw and verbally approved of the energy dissipaters at the W4 and W6 culvert outlets during the July 14, 2022, site meeting. • DWR is concerned that the velocity at the culvert outlets will impact the stability of streambeds due to the extremely steep slopes of the culverts. Please discuss how the existing grade of the streambeds at culvert outfalls will be maintained. o Please refer to the supplemental email submitted July 22, 2022, noting additional bank stabilization measured to be installed at culvert outlets that appear to be susceptible to erosion. Boulder bank stabilization will provide stability to the stream bed below the culvert outlets. Impact Clarification • S1 Impact o Please indicate on the site plan the type of fill proposed / implemented. ■ A culvert was installed under the roadbed from Wetland Impact W1 to the undisturbed stream channel (SM) below Stream Impact S1. o W1 is shown to be isolated. Was W1 connected to S1 prior to unpermitted project activities? ■ No, WEE (where Wetland Impact W1 occurred) did not have a surface connection to SM (where Impact S1 occurred). It is possible there was an old crushed or wooden culvert in this location but it was not obvious during the wetland and stream delineation that was conducted prior to the road improvements in this location. • W3 Impact o Please indicate what the fill impact is for this location. Please discuss/demonstrate how the wetland above W3 impact will not be hydrologically disconnected from the wetland W3 impact. ■ The wetland impact table in section C3 and Figure 5.6 of the original submittal and the supplemental information, provided July 22, 2022, specify W3 is an excavation impact for grading along the roadside. The hillside around Wetland Impact W3 was excavated/graded to provide a stable slope next to the road. Hydrology from the unimpacted section of Wetland WILL above the road re-created a channel with surface water flow down to the culvert that was installed under the road. The culvert system receiving this surface water directly connects to wetland WKK. 3 • W5 Impact o Please indicate on the site plan the type of fill proposed. ■ Wetland Impact W5 was for excavation into the hillside to create a stable slope adjacent to the improved access road. Refer to Figure 5.9 of the supplemental information submitted via email on July 22, 2022. o The wetlands below W5 impact should not be hydrologically disconnected the wetland above the W5 impact. Please discuss/demonstrate how these wetlands will not be hydrologically disconnected from project activities. ■ A culvert was installed under the roadbed to maintain surface water hydrology between the upslope and downslope wetlands. During the July 14th, 2022, site visit with the USACE and NC WRC, this impact area was inspected. Wetland WILL, upslope of W5 impact area, recreated a seep with surface water flow along the graded slope that remains connected to WILL between the access roads via a culvert installed under the roadbed (not shown on Figure 5.9). W4 impact o Please discuss/demonstrate how the upper portion of the wetland at this location will not be hydrologically disconnected to the rest of the wetland area. ■ Wetland impact area W4 (to wetland WJJ) does not disconnect any portions of the wetland. The wetland upslope are all connected to WKK and downslope streams via culverts or surface water within unimpacted wetland areas of WILL. • W6 culvert outfall o Please discuss how ■ We do not understand this incomplete comment. Site stability • Please specify a native seed mix for stabilization of any temporary streambank /wetland impacts. Please provide a timeline for application and stabilization. o Species used to revegetate the site and for erosion control are specified by the Division of Energy, Mineral, and Land Resources (DEMLR), Land Quality Section. Erosion control measures will be in compliance with DEMLR Standards. o A copy of the DEMLR and Haywood County Erosion Control Plan approval letters are attached for reference. Species used to revegetate the site and for erosion control are specified by the Division of Energy, Mineral, and Land Resources (DEMLR), Land Quality Section. Erosion control measures will be in compliance with DEMLR Standards. • Permanent seed should be applied as quickly as possible for stabilization across the site to ensure sediment is not lost to surface waters or wetlands. Please provide a timeline for when this will be achieved. o Species used to revegetate the site and for erosion control are specified by the Division of Energy, Mineral, and Land Resources (DEMLR), Land Quality Section. Erosion control measures will be in compliance with DEMLR Standards. o A copy of the DEMLR and Haywood County Erosion Control Plan approval letters are attached for reference. Pursuant to Title 15A NCAC 02H .0502(e), the applicant shall furnish all of the above requested information for the proper consideration of the application. Please provide your response by September 17, 2022. If all of the requested information is not received, the Division will be unable to approve the application and it will be denied as incomplete. The denial of this project will necessitate reapplication to the Division for approval, including a complete application package and the appropriate fee. Amy Annino Environmental Specialist — Asheville Regional Office Water Quality Regional Operations Section NCDEQ — Division of Water Resources 2090 U.S. Hwy. 70 Swannanoa, N.C. 28711 828 296 4656 office 984 232 1222 mobile amy.annino(cancdenr.gov Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts. To accommodate these staffing changes, all DEQ office locations are limiting public access to appointments only. Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your patience as we continue to serve the public during this challenging time. From: Tyson Kurtz <tvson@cwenv.com> Sent: Friday, July 29, 2022 8:51 AM To: Annino, Amy M <amy.annino@ncdenr.gov> Subject: [External] FW: Crabtree Mountain Road Campground NWP 39 - Action ID SAW-2022-01384 CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to Report Spam. Amy, David Brown issued the NWP 39 for the project. I wanted to follow up to see if you had any questions regarding the application or the additional information I sent to you and David (July 22) after the site meeting . David is enforcing that the culvert outlet bank stabilization work needs to be conducted prior to October 15. Does the bank stabilization work need to wait until the 401 WQC is issued? If the proposed bank stabilization work was a standalone project, it would be non -notifying, but since it is paired with permanent wetland and stream impacts on site, I am not certain if they need to wait for authorization. Thank you, Tyson Kurtz Biologist 0: 828-698-9800 ext. 302 1 C: 610-310-8744 From: Brown, David W CIV USARMY CESAW (USA) <David.W.Brown@usace.army.mil> Sent: Thursday, July 28, 2022 10:10 AM To: matt.bare20@gmail.com Cc: Tyson Kurtz <tvson@cwenv.com>; Tim V. Surrett <Tim.Surrett@haywoodcountync.gov> Subject: Crabtree Mountain Road Campground NWP 39 -Action ID SAW-2022-01384 Matt Bare, Reference is made to the pre -construction notification submitted by ClearWater Environmental Consultants for the utilization of NWP 39 for the Crabtree Mountian Road Campground development project in Clyde, Haywood County, North Carolina. Attached is the Corps' general permit verification for the project. As part of the Corps efforts for paperless communications, no hard copy will be mailed. Sincerely, David Brown, PG Regulatory Specialist/Geologist USACE Wilmington District -Asheville Regulatory Field Office 151 Patton Avenue, Room 208 Asheville, NC 28801-5006 828-271-7980, ext. 4232 david.w.brown@usace.army.mil