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HomeMy WebLinkAbout20231052 Ver 1_ePCN Application_20230725DWR Division of Water Resources Pre -Construction Notification (PCN) Form For Nationwide Permits and Regional General Permits (along with corresponding Water Quality Certifications) April 13, 2022 Ver 4.3 Initial Review Has this project met the requirements for acceptance in to the review process? Yes No Is this project a public transportation project?* Yes No Change only If needed. Pre -Filing Meeting Date Request was submitted on: 2/14/2023 BIMS # Assigned 20231052 Is a payment required for this project?* No payment required Fee received Fee needed - send electronic notification Reviewing Office* Washington Regional Office - (252) 946-6481 Information for Initial Review la. Name of project: Greenbriar Drive Drainage and Streambank Stabilization 1a. Who is the Primary Contact?* Keven Arrance 1b. Primary Contact Email: * karrance@hazenandsawyer.com Date Submitted 7/25/2023 Nearest Body of Water Greens Mill Run Basin Tar -Pamlico Water Classification C; NSW Site Coordinates Latitude: 35.583288 A. Processing Information Is this project connected with ARPA funding? Yes No County (or Counties) where the project is located: Pitt Is this a NCDMS Project Yes No Longitude: -77.391838 Version#* 1 What amout is owed?* $240.00 $570.00 Select Project Reviewer* Robert Tankard:robert.tankard@ncdenr.gov 1c. Primary Contact Phone: * (919)522-4269 a Is this project a public transportation project?* Yes No 1a.Type(s)of approval sought from the Corps: Section 404 Permit (wetlands, streams and waters, Clean Water Act) Section 10 Permit (navigable waters, tidal waters, Rivers and Harbors Act) Has this PCN previously been submitted?* Yes No 1b. What type(s) of permit(s) do you wish to seek authorization? Nationwide Permit (NWP) Regional General Permit (RGP) Standard (IP) 1c. Has the NWP or GP number been verified by the Corps? Yes No Nationwide Permit (NWP) Number: 13 - Bank Stabilization Nationwide Permit (NWP) Number: 03 - Maintenance NWP Numbers (for multiple NWPS): 1d. Type(s) of approval sought from the DWR: 401 Water Quality Certification - Regular 401 Water Quality Certification - Express Non-404 Jurisdictional General Permit Riparian Buffer Authorization Individual 401 Water Quality Certification le. Is this notification solely for the record because written approval is not required? For the record only for DWR 401 Certification: Yes No For the record only for Corps Permit: Yes No 1f. Is this an after -the -fact permit application? * Yes No 1g. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts? Yes No 1g. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts? Yes No 1h. Is the project located in any of NC's twenty coastal counties? Yes No 1j. Is the project located in a designated trout watershed? Yes No B. Applicant Information 1d. Who is applying forthe permit? Owner Applicant (other than owner) le. Is there an Agent/Consultant for this project? Yes No 2. Owner Information 2a. Name(s) on recorded deed: City of Greenville 2b. Deed book and page no.: easement and roadway right-of-way 2c. Contact Person: Lisa Kirby 2d.Address Street Address 1500 Beatty Street Address Line 2 city State / Province / Region Greenville NC Postal / Zip Code Country 27834 United States 2e. Telephone Number: (252)329-4683 2g. Email Address:* lkirby@greenvillenc.gov 4. Agent/Consultant (if applicable) 4a. Name: Keven Arrance 4b. Business Name: Hazen and Sawyer 4c.Address Street Address 4011 WestChase Blvd, Suite 500 Address Line 2 City Raleigh Postal / Zip Code 27607 4d. Telephone Number: (919)522-4269 4f. Email Address: karrance@hazenandsawyer.com C. Project Information and Prior Project History 1. Project Information 1b. Subdivision name: (if appropriate) N/A 1c. Nearest municipality / town: Greenville, NC 2. Project Identification 2a. Property Identification Number: 4677708597,4677707630,4677709766, 2f. Fax Number: State / Province / Region NC Country United States 4e. Fax Number: 4677800888, 4677811046, 4677718741, 2b. Property size: 4677812214, 1.9 2c. Project Address Street Address Club Rd and Greenbriar Dr Address Line 2 City State / Province / Region Greenville NC Postal / Zip Code Country 27834 United States 3. Surface Waters 3a. Name of the nearest body of water to proposed project: Greens Mill Run 3b. Water Resources Classification of nearest receiving water: C; NSW 3c. What river basin(s) is your project located in?* Tar -Pamlico 3d. Please provide the 12-digit HUC in which the project is located. 030201030403 4. Project Description and History a 4a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this application:* The project is in the southern portion of Greenville, NC in Pitt County. The project limits include drainage and utility easements, roadways, and maintained lawns associated with residences and roadway shoulders. There are two unnamed tributaries (UTs) to Greens Mill Run traversing the project area. UT1 runs parallel to Club Road and is currently culverted under Fairlane Road Greenbriar Drive. The banks are nearly vertical and continuing to erode, which risks the integrity and safety of Club Road. UT2 is located to the east of UT1 and is culverted under Greenbriar Drive. Currently, downstream of their respective crossings of Greenbriar Drive, both streams are conveyed in pipes that meet and outlet into the UT1 channel. The existing culverts within the project area are under -sized and inadequate to pass the 10-year storm event, which is causing flooding in the surrounding neighborhood. The existing land uses abutting and adjacent to the unnamed tributaries include single-family homes, roadway, drainage and utility easements, and upland forested areas. 4b. Have Corps permits or DWR certifications been obtained for this project (including all prior phases) in the past? * Yes No Unknown 4f. List the total estimated acreage of all existing wetlands on the property: 4g. List the total estimated linear feet of all existing streams on the property: 1050 4h. Explain the purpose of the proposed project: * The City of Greenville proposes the Greenbriar Drive Drainage and Streambank Stabilization project to reduce the frequency and duration of flooding in the surrounding neighborhood. The project is designed to manage the 10-year storm event within the stream channels and culverts. The project will also provide the ecological benefit of daylighting portions of the two stream channels that are presently conveyed in culverts. Daylighting the channels and planting the riparian zone along the daylit channels will improve water quality and restore aquatic habitat. 4i. Describe the overall project in detail, including indirect impacts and the type of equipment to be used: * The proposed project entails reconstruction of an eroded streambank, installation of a new culvert at two road crossings, replacement of the existing culvert at a third road crossing, and daylighting reaches of two streams. Club Road, parallel to UT2 between Fairlane Drive and Greenbrier Drive, will be widened and shifted to the west, away from the stream. To accommodate the proposed activities, bank grading immediately upstream and downstream of the culverts will be necessary to tie the new culverts and their headwalls in to the stream channel. The eroded streambank will be addressed by installation of a mechanically stabilized earthen (MSE) living wall. The wall consists of a stacked wall at 0.5:1 slope set on a toe protection stone. The area behind the wall is filled with select compacted granular fill with horizontal bracing by geogrid reinforcement, measuring in length at minimum 0.6 times the wall height. At the stream bed elevation, a perforated pipe is embedded in the bank to provide drainage from behind the wall, discharging into the stream. The pipe is set in a 12-inch-thick layer of drainage aggregate stone with filter fabric laid between the aggregate stone and the granular fill. The top of the wall will be backfilled with approved growing medium and seeded. Streambank stabilization is designed for 190 feet of bank on the left bank of UT1 and 45 feet of the right bank of UT1, for a total of 235 feet of bank. The MSE living wall will be exposed at an elevation of approximately 1.5 feet above the bed of the stream and will be embedded in the bank with soil in front of it. As such, no unnatural bank stabilization material will be exposed in the channel below the plane of ordinary high water. At the Fairlane Drive crossing of UT1 to Greens Mill Road, a new 42-inch diameter reinforced concrete pipe (RCP) will be installed on the east side of and parallel to the existing twin 42- inch diameter RCPs. The existing head walls will be extended and the stream banks on each end of the culverts will be graded back to accommodate the new culvert pipe. At the Greenbrier Drive crossing of UT1 to Greens Mill Run, the existing 48-inch RCP will be removed and replaced with twin, parallel, 6-foot by 4-foot, reinforced concrete box culverts. The proposed box culverts will be situated with the inlet at the same location as the existing culvert. The box culverts will be 50 feet in length, providing adequate length to cross the road and allow for sufficient shoulder width for roadway safety. Head wall and wing walls will be installed at each end of the box culverts. At the Greenbriar Drive crossing of UT2 to Greens Mill Run, a new 60-inch diameter RCP will be installed adjacent to and on the west side of the existing 60-inch diameter RCP. The inlet of the existing and proposed culverts at this location will be set 5 feet closer to the roadway than the existing culvert inlet is located. The new culvert will be 79 feet in length, and both ends of the culverts will be protected with a head wall and wing walls. For all culverts, the stream banks on each end of the culverts will be graded back to accommodate the new culverts. The graded stream banks will generally be set to a 2:1 slope, due to the existing onsite constraints. Inlet and outlet protection will be installed at each end of each culverted road crossing to protect against future scour in the stream bed. The inlet and outlet protection will be riprap set flush with the stream bed and buried to a depth of 2 feet below the stream bed elevation. The riprap will be placed across the stream bed and up the newly graded banks on the inlet end of the culverts and across the stream bed on the outlet end of the culverts. Where there is currently riprap protection in place (inlet of all three culverts), it will be removed and replaced with new stone that is set properly for the channel geomorphology and grade. The inlet and outlet protection will impact approximately 14 feet and 0.003 acre (137 square feet) of stream bed that is not previously permanently impacted by the placement of riprap or a culvert. Additionally, existing utility lines that are in conflict with the proposed project will be relocated; utilities to be relocated include sanitary sewer, water, and gas mains. Water and gas mains will be buried in approximately the same location as they presently lie with minor adjustments, as needed. The sanitary sewer will be shifted slightly upstream for its stream crossings. The gravity sewer will continue to cross the streams as an aerial crossing, and the exposed portion of the sewer will be encased in steel for protection (sheet C8). The aerial crossings will be installed with no direct impact to the stream channels. UT1 and UT2 to Greens Mill Run will be removed from the existing culverts downstream of their respective crossings of Greenbrier Drive. The length of existing stream pipe to be removed is 170 feet for UT1 and 230 feet for UT2. The new stream channels will be constructed with natural meanders and stabilized banks. The channel length for UT1 will be 190 feet, and the channel length for UT2 will be 168 feet. Each channel will contain at least one deep pool and a series of riffles/runs. The banks of UT2 will be stabilized with toe wood embedded in the banks along the outside of meanders. The daylit channel reaches will range in width at bankfull from 12 feet to 20.5 feet. A bankfull bench will be established for the length of the daylit channels at a width ranging from 8 to 10 feet on each side of the channel. Bank slopes are proposed to be 3:1 and stabilized with livestakes and seeding with suitable herbaceous seed mixes, as detailed on sheets C17 and D4. The proposed channel geomorphology will provide increased capacity for conveying the design storm event without overtopping the banks and spilling into the floodplain. The full width of the protected riparian buffer adjacent to the new channels will be planted with woody and herbaceous species, restoring vegetation in the buffer, to the extent feasible within the constraints of private properties and roadside shoulders (sheets C16 and C17). Club Road will be improved and modified. The existing roadway ranges from 19 feet to 22 feet in width with no curb and gutter. The proposed conditions include a 6-inch flush curb on the stream side of the road, a 2-foot curb and gutter on the landward side of the road, and a consistent 19-foot width for the roadway. The road is proposed to be shifted approximately 4 feet west, away from the stream channel. Tie-in of existing driveways on the west side of Club Road will be performed as part of the project, utilizing the existing driveway alignments. Shifting the roadway to the west will result in approximately 1,860 square feet of impervious surface in Zone 1 of the buffer being removed and returned to pervious surface. Per the City of Greenville Erosion Control Guide, this area will be seeded with tall fescue, centipede, and bermudagrass. Seeding details are presented on Sheet D1 in detail 310.01. Equipment to be used for construction may include, but is not limited to, backhoes, front-end loaders, excavators, jackhammers, temporary pump -around systems, pavers, graders, and concrete mixers. The use of one or more jackhammers is anticipated to be needed for demolition of existing roadway pavement. In -stream structures, specifically the head walls and wing walls associated with each culvert, are anticipated to be cast -in -place concrete. The temporary pump -around systems will establish and maintain a dry work area, preventing surface water contact with uncured or curing concrete. 5. Jurisdictional Determinations 5a. Have the wetlands or streams been delineated on the property or proposed impact areas?* Yes Comments: No 5b. If the Corps made a jurisdictional determination, what type of determination was made? * Preliminary Approved Not Verified Unknown N/A Corps AID Number: G Unknown 5c. If 5a is yes, who delineated the jurisdictional areas? Name (if known): Linda Diebolt and Keven Arrance Agency/Consultant Company: Hazen and Sawyer Other: 6. Future Project Plans 6a. Is this a phased project?* Yes No Are any other NWP(s), regional general permit(s), or individual permits(s) used, or intended to be used, to authorize any part of the proposed project or related activity? D. Proposed Impacts Inventory 1. Impacts Summary 1a. Where are the impacts associated with your project? (check all that apply): Wetlands Streams -tributaries Buffers Open Waters Pond Construction 3. Stream Impacts Reason for impact (?) 3b.lmpact type* 3c. Type of impact* 3d. S. name* 3e. Stream Type* 3f. Type of 3g. S. width 3h. Impact F3a. (?) Jurisdiction* length* S1 Culvert - new parallel to Temporary Culvert UT1 to Greens Mill Run Perennial Both 50 existing Average (feet) (linear feet) S2 Culvert - grading and riprap Temporary Culvert UT1 to Greens Mill Run Perennial Both 44 replacement Averege (feet) (linear feet) S3 Culvert - grading and outlet Permanent Culvert UT1 to Greens Mill Run Perennial Both 10 14 protection Averege (feet) (iinearfeet) S4 Install bank stabilization Temporary Bank Stabilization J UT1 to Greens Mill Run Perennial Both 190 Averege (feet) (linear feet) SS Install bank stabilization Temporary Bank Stabilization J UT1 to Greens Mill Run Perennial Both 5 45 Averege (feel) (linear feet) S6 Culvert - replace culvert and Temporary Culvert UT1 to Greens Mill Run Perennial Both 6 75 riprap Averege (feet) (linear feet) g7 Daylighting - remove existing Permanent Other UT1 to Greens Mill Run Perennial Both 5 170 pipe Average (feet) (linear feet) gg Daylighting - remove existing Permanent Other Tko Greens Mill Run Perennial Both 230 pipe Averege (feet) (linear feet) S9 Culvert - new parallel to Temporary Culvert UT2 to Greens Mill Run Perennial Both 79 existing Averege (feet) (linear feet) S10 Culvert - grading, pipe Temporary Culvert UT2 to Greens Mill Run Perennial Both 5 27 removal, and riprap Average (feet) (linear feet) replacement 31. Total jurisdictional ditch impact in square feet: 0 31. Total permanent stream impacts: 31. Total temporary stream impacts: 414 510 3i. Total stream and ditch impacts: 924 3j. Comments: 6. Buffer Impacts (for DWR) 6a. Project is in which protect basin(s)? Check all that apply. Neuse Tar -Pamlico Catawba Randleman Goose Creek Jordan Lake Other 6b. Impact Type 11 6c. Per or Temp 6d. Stream name 6e. Buffer mitigation required? 6f. Zone 1 impact 6g. Zone 2 impact 131 -AMA; Road improvements P UT1 to Greens Mill Run Yes 1,341 1,201 133 - A; Removal of impervious surface P UT1 to Greens Mill Run No 1,860 0 134 - ALA; Streambank stabilization for culvert P UT1 to Greens Mill Run No 220 0 135 - AUA; Bank stabilization with plantings T UT1 to Greens Mill Run No 166 0 136 - AUA; Bank stabilization with plantings T UT1 to Greens Mill Run No 18 0 137 - A; Stream daylighting T UT1 to Greens Mill Run No 3,878 1,763 138 - A; Culvert installation under roadway P UT2 to Greens Mill Run No 789 76 62 - A; Repaving existing roadway T UT1 to Greens Mill Run No 5,339 150 139 - AUA; Temporary construction access T UT1 and UT2 to Greens Mill Run No 15,138 3,285 6h. Total buffer impacts: Zone 1 Zone 2 Total Temporary impacts: 24,539.00 5,198.00 Zone 1 Zone 2 Total Permanent impacts: 4,210.00 1,277.00 Zone 1 Zone 2 Total combined buffer impacts: 28,749.00 6,475.00 6i. Comments: E. Impact Justification and Mitigation 1. Avoidance and Minimization 1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing the project: Full avoidance of impacts to waters of the US is only possible with the no -action alternative, which leaves the surrounding residences at risk of future, repetitive flooding hazards and damage. The proposed improvements consist of the least intrusive option to fully address the flooding and erosion issues. The additional culverts proposed at impact sites S1 and S9 provide increased culvert capacity while retaining the existing culverts and working with the current stream channel configuration. The use of MSE living wall provides a strong support for the existing bank, limits the encroachment into the stream and riparian buffer, and provides a soft bank surface on which herbaceous and woody vegetation will be established. The soft surface with plants will establish a more natural bank, which offers shade, habitat, and water quality benefits. The stream daylighting downstream of Greenbriar Drive will re-establish two stream channels with structure and morphology that resemble nature. The riparian buffer area is currently maintained lawn and will be planted with suitable native species, including trees, shrubs, and native grasses. Stabilization of the banks of UT2 within the proposed daylit reach will be accomplished via toe wood, using woody material generated from site preparation. This design improves the flow pattern, habitat availability, and reduction of nutrients and sediments entering the stream. 1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques: Erosion and sediment control measures will be installed prior to land -disturbing activities. The erosion and sediment control measures will be inspected weekly and following a rain event that generates runoff to ensure that the devices are in good working order. Any repair needs identified during the inspections will be addressed immediately. Erosion and sediment control measures for the project include silt fence, tree protection fence and planking, coir matting on disturbed stream banks, stabilized construction entrances from paved roadways, clean water diversion with discharges over rock outlet protection pads, and temporary pump -around systems to pump water from within the work area into a filter bag. Sandbag dikes will be installed at the upstream limits of the project in UT1 and UT2 to Greens Mill Run and at the downstream limit of the project in UT1 to Greens Mill Run. The sandbag dikes and pumping systems will establish and maintain dry work areas for the duration of in -stream work. Construction staging area will be established in an upland area adjacent to the in -stream work area. The staging area will be surrounded on three sides by silt fence or combination silt/tree protection fence. Vehicle and equipment maintenance will be performed in areas away from surface waters to prevent spills or fluid leaks. Uncured or curing concrete will not be permitted to be in contact with surface waters. Final grading and seeding will be performed in a timely manner upon completion of activities in an area. 2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State 0 u 2a. Does the project require Compensatory Mitigation for impacts to Waters of the U.S. or Waters of the State? Yes No 2b. If this project DOES NOT require Compensatory Mitigation, explain why: Compensatory mitigation is not required for impacts to waters of the US. Two of three of the permanent impacts are associated with the permanent removal of existing stream piping, restoring the stream channel to a more natural condition. The stream has been previously permanently impacted by placement of the stream pipes, and the current project proposes removal of the existing permanent impact and restoration of stream character and habitat. The third permanent impact affects 14 feet of stream (140 square feet of stream bed). The impact length and area are below the threshold at which mitigation is required. The impact consists of outlet protection, which serves to stabilize the stream and protect against future erosion, scour, and degradation of the channel. F. Stormwater Management and Diffuse Flow Plan (required by DWR) 1. Diffuse Flow Plan 1a. Does the project include or is it adjacent to protected riparian buffers identified within one of the NC Riparian Buffer Protection Rules? Yes No What type of SCM are you providing? Level Spreader Vegetated Conveyance (lower SHWT) Wetland Swale (higher SHWT) Other SCM that removes minimum 30 % nitrogen Proposed project will not create concentrated stormwater flow through the buffer 2. Stormwater Management Plan 2a. Is this a NCDOT project subject to compliance with NCDOT's Individual NPDES permit NCS000250? Yes No 2b. Does this project meet the requirements for low density projects as defined in 15A NCAC 02H .1003(2)? Yes No Comments: G. Supplementary Information 1. Environmental Documentation 1a. Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land? Yes No 1b. If you answered "yes" to the above, does the project require preparation of an environmental document pursuant to the requirements of the National or State (North Carolina) Environmental Policy Act (NEPA/SEPA)?* Yes ) No Comments:' Project is below the minimum criteria to trigger a SEPA review, and the project does not have a federal nexus that triggers a NEPA review. 2. Violations (DWR Requirement) 2a. Is the site in violation of DWR Water Quality Certification Rules (15A NCAC 2H .0500), Isolated Wetland Rules (15A NCAC 2H .1300), or DWR Surface Water or Wetland Standards or Riparian Buffer Rules (15A NCAC 2B .0200)? * Yes No 3. Cumulative Impacts (DWR Requirement) 3a. Will this project result in additional development, which could impact nearby downstream water quality? * Yes No 3b. If you answered "no," provide a short narrative description. The project consists of stream repair and culvert replacement in an existing, built -out residential neighborhood. The project will not provide services for or otherwise stimulate growth or development. 4. Sewage Disposal (DWR Requirement) 4a. Is sewage disposal required by DWR for this project? Yes No N/A 5. Endangered Species and Designated Critical Habitat (Corps Requirement) 5a. Will this project occur in or near an area with federally protected species or habitat? * Yes No O 5b. Have you checked with the USFWS concerning Endangered Species Act impacts? Yes No 5d. Is another Federal agency involved?* Yes No Unknown 5e. Is this a DOT project located within Division's 1-8? Yes No 5f. Will you cut any trees in order to conduct the work in waters of the U.S.? Yes No 5g. Does this project involve bridge maintenance or removal? Yes No 5h. Does this project involve the construction/installation of a wind turbine(s)?* Yes No 5i. Does this project involve (1) blasting, and/or (2) other percussive activities that will be conducted by machines, such as jackhammers, mechanized pile drivers, etc.? Yes No 5j. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat? IPaC has been reviewed at multiple times during the course of the project, most recently in July 2023. Hazen biologists performed onsite assessments of the habitat available within and immediately surrounding the project area. Habitat onsite does not support the following, federally protected species listed on IPaC in July 2023: American alligator, Neuse River waterdog, Atlantic pigtoe, and Tar River spinymussel. Trees are present within and surrounding the project area, and tree removals are necessary to accommodate the construction of the project. Habitat for the northern long-eared bat and tricolored bat (proposed endangered) is present within and surrounding the project area. Northern long-eared bat is not listed by NC Natural Heritage Program as having a documented occurrence in Pitt County. Tree removal may occur as early as October 2023. 6. Essential Fish Habitat (Corps Requirement) 6a. Will this project occur in or near an area designated as an Essential Fish Habitat?* Yes No 6b. What data sources did you use to determine whether your site would impact an Essential Fish Habitat? Hazen consulted the online NOAA, NMFS's Essential Fish Habitat Mapper on March 17, 2023. 7. Historic or Prehistoric Cultural Resources (Corps Requirement) 7a. Will this project occur in or near an area that the state, federal or tribal governments have designated as having historic or cultural preservation status? " Yes No 7b. What data sources did you use to determine whether your site would impact historic or archeological resources? * Hazen consulted HPOWEB and the National Register of Historic Places to determine the presence of historic resources. A National Register -listed house and property (PT1730 - 1930 Colonial Revival 2-story brick house) are located west of the project area, along S Memorial Drive. The house is approximately 900 feet from the project area, and the property is approximately 400 feet from the project area. Due to the existing homes and the topography of the area, the project area is not visible from the National Register -listed house or property. Additionally, a study -listed district, which has been determined eligible, is located approximately 2,100 feet east of the project area. The Lakewood Pines Historic District is identified as PT2254 and was determined eligible in 2015. The district consists of a 1946-1960 residential neighborhood with brick ranch and colonial homes. The existing residential development, railroad, large trees, and topography restrict view of the project area from the district and the view of the district from the project area. 8. Flood Zone Designation (Corps Requirement) Be. Will this project occur in a FEMA-designated 100-year floodplain? * Yes No 8b. If yes, explain how project meets FEMA requirements: No decrease in capacity of the 100-year floodplain will occur from implementation of the proposed project. No new structures will be constructed in the 100-year floodplain. Daylighting the two reaches of stream will improve use of the existing 100-year floodplain. 8c. What source(s) did you use to make the floodplain determination? x Hazen performed a desktop review of FEMA's National Flood Hazard Layer Viewer. Miscellaneous a Please use the space below to attach all required documentation or any additional information you feel is helpful for application review. Documents should be combined into one file when possible, with a Cover Letter, Table of Contents, and a Cover Sheet for each Section preferred. Click the upload button or drag and drop files here to attach document Greenbrier Dr PCN attachments.pdf 11.53MB File must be PDF or KMZ Comments Signature By checking the box and signing below, I certify that: O • The project proponent hereby certifies that all information contained herein is true, accurate, and complete to the best of my knowledge and belief'; and • The project proponent hereby requests that the certifying authority review and take action on this CWA 401 certification request within the applicable reasonable period of time. • I have given true, accurate, and complete information on this form; • I agree that submission of this PCN form is a "transaction" subject to Chapter 66, Article 40 of the NC General Statutes (the "Uniform Electronic Transactions Act"); • I agree to conduct this transaction by electronic means pursuant to Chapter 66, Article 40 of the NC General Statutes (the "Uniform Electronic Transactions Act"); • I understand that an electronic signature has the same legal effect and can be enforced in the same way as a written signature; AND • I intend to electronically sign and submit the PCN form. Full Name: Keven Arrance Signature Date 7/25/2023