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HomeMy WebLinkAbout20210643 Ver 1_ePCN Application_20210511DWR Division of Water Resources Initial Review Pre -Construction Notification (PCN) Form April 4, 2021 Ver 4 Has this project met the requirements for acceptance in to the review process?* 6 Yes ✓ No Is this project a public transportation project?* C Yes ( No Change only 1 needed. BIMS # Assigned* 20210643 Is a payment required for this project?* ✓ No payment required ✓ Fee received 6 Fee needed - send electronic notification Reviewing Office * Raleigh Regional Office - (919) 791-4200 Information for Initial Review la. Name of project: Willowbrook Stream Repair la. Who is the Primary Contact?* Wyatt Brown lb. Primary Contact Email:* brovunenvgrp@gmail.com Date Submitted 5/11/2021 Nearest Body of Water Beddingfield Creek Basin Neuse Water Classification C,NSW Site Coordinates Latitude: 35.67969 A. Processing Information Version#* What amout is owed?* 6 $240.00 r $570.00 Select Project Reviewer* Stephanie Goss:eads\szgoss lc. Primary Contact Phone:* (919)524-5956 Longitude: -78.49987 County (or Counties) where the project is located: Johnston Is this a NCDMS Project ✓ Yes G No Is this project a public transportation project?* ✓ Yes G No Pre -Filing Meeting Information Is this a courtesy copy notification?* ✓ Yes f• No ID# 20210643 Version 1 Pre -fling Meeting or Request Date 4/14/2021 Attach documentation of Pre -Filing Meeting Request here: Click the upload button or drag and drop files here to attach document DWR Pre -Filing Meeting Request Form (24).pdf Fie type mast be FCF la. Type(s) of approval sought from the Corps: f7 Section 404 Permit (wetlands, streams and waters, Clean Water Act) I— 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? 7 Nationwide Permit (NWP) I- Regional General Permit (RGP) I— Standard (IP) lc. Has the NWP or GP number been verified by the Corps? ✓ Yes r No Nationwide Permit (NWP) Number: NWP Numbers (for multiple NWPS): Id. Type(s) of approval sought from the DWR: 17 401 Water Quality Certification - Regular I— Non-404 Jurisdictional General Permit I— Individual 401 Water Quality Certification 18 - Minor Discharges le. Is this notification solely for the record because written approval is not required? For the record only for DWR 401 Certification: For the record only for Corps Permit: If. Is this an after -the -fact permit application?* ✓ Yes ( No 57.69KB I— 401 Water Quality Certification - Express 17 Riparian Buffer Authorization lg. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts? ✓ Yes rNo lg. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts? ✓ Yes rNo Acceptance Letter Attachment 1h. Is the project located in any of NC's twenty coastal counties? ✓ Yes rNo 1j. Is the project located in a designated trout watershed? ✓ Yes r No ✓ Yes r No ✓ Yes r No B. Applicant Information Id. Who is applying for the permit? I7 Owner r Applicant (other than owner) le. Is there an Agent/Consultant for this project?* r Yes r No 2. Owner Information 2a. Name(s) on recorded deed: WILLOWBROOK HOMEOWNERS ASSOC! 2b. Deed book and page no.: Book: 03471 Page: 0297 2c. Contact Person: Don Matera, President 2d.Address Street Address 14100 POSSUM TRACK ROAD Address Line 2 aty RALEIGH Postal / Zip Code 27614-0000 2e. Telephone Number: (919)600-4800 2g. Email Address:* don_matera@msn.com 4. Agent/Consultant (if applicable) 4a. Name: Wyatt Brown 4b. Business Name: Brown's Environmental Group, Inc 4c.Address Street Address 242 Batten Farm Road Address Line 2 atY Selma Postal / Zip Code 27576 4d. Telephone Number: (919)524-5956 4f. Email Address:* brownenvgrp@gmail.com State / Province / Region NC Country US 2f. Fax Number: State / Province / Region NC Country US 4e. Fax Number: Agent Authorization Letter* Willowbrook Agent letter.pdf 81.82KB C. Project Information and Prior Project History 1. Project Information 1b. Subdivision name: (it appropriate) Willowbrook lc. Nearest municipality/ town: Clayton 2. Project Identification 2a. Property Identification Number: 174004-82-5681 2b. Property size: 2.6 2c. Project Address Street Address 2009 Willow Hill Lane Address Line 2 City State / Province / Region Clayton NC Postal / Zip Code Country 27520 US 3. Surface Waters 3a. Name of the nearest body of water to proposed project:* Beddingfield Creek 3b. Water Resources Classification of nearest receiving water:* C, NSW 3c. What river basin(s) is your project located in?* Neuse 3d. Please provide the 12-digit HUC in which the project is located. 030202011103 4. Project Description and History 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:* Willow Brook is a condominium neighborhood located adjacent to Pine Hollow Golf Course in Clayton NC. The area is mixed housing, woodland and Pine Hollow Golf Course. An unnamed first order stream is located directly behind 2 townhomes with location being 2005 and 2009 Windy Hill Lane. The left stream bank of the unnamed stream is eroding outward, toward the townhomes, putting them in danger of destruction. 4b. Have Corps permits or DWR certifications been obtained for this project (including all prior phases) in the past?* r Yes b' No r Unknown 4d. Attach an 8 1/2 X 11 excerpt from the most recent version of the USGS topographic map indicating the location of the project site. (for DWR) Quad.pdf 318.37KB 4e. Attach an 8 1/2 X 11 excerpt from the most recent version of the published County NRCS Soil Survey map depicting the project site. (for DWR) soils.pdf 277.85KB 4f. List the total estimated acreage of all existing wetlands on the property: No wetlands were observed in the project area 4g. List the total estimated linear feet of all existing streams on the property: - 496.0 4h. Explain the purpose of the proposed project:* There is increasing erosion on the left bank of the unnamed stream. The eroding left bank is creeping toward the townhomes putting the stability of the 2 townhomes in danger. The purpose of the project is to armor the left bank to stop the erosion and save the townhomes from destruction. 4i. Describe the overall project in detail, including indirect impacts and the type of equipment to be used:* The left bank of the stream is eroding, widening toward 2 essting condos. The stream will be pumped around or diverted around the work area. The eroded bank area will be excavated with a track hoe and the spoil placed uphill, away from the stream. Gabion baskets will be filled with class B riprap and placed on an 8 in pad of #57 stone. The moving of the gabion baskets will be by a track hoe. After the gabions are placed according to the detail and the approval of the engineer, proper fill will be placed and compacted around the gabions back to the uphill stream bank. 4j. Please upload project drawings for the proposed project. c-00 property information (5).pdf 7.12MB c-1 existing conditions (3).pdf 595.79KB c-2 Proposed Retaining Wall and (4).pdf 1.55MB C-3 Stream Cross -Sections (2).pdf 267.63KB c-4 retaining wall cross-sectio (2).pdf 543.76KB D-1 Retaining Wall Details (1).pdf 2.84MB D-2 Erosion control Details (2).pdf 372.32KB site photos (1).pdf 1.19MB 5. Jurisdictional Determinations 5a. Have the wetlands or streams been delineated on the property or proposed impact areas?* 6 Yes Comments: r No r Unknown 5b. If the Corps made a jurisdictional determination, what type of determination was made?* r Preliminary r Approved 6 Not Verified r Unknown r WA Corps AID Number: 5c. If 5a is yes, who delineated the jurisdictional areas? Name (if known): Agency/Consultant Company: Other: 5d1. Jurisdictional determination upload 6. Future Project Plans Wyatt Brown Brown's Environmental Group, Inc 6a. Is this a phased project?* 4 Yes r 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? Not to my knowledge LD. Proposed Impacts Inventory 1. Impacts Summary la. Where are the impacts associated with your project? (check all that apply): r Wetlands 17 Streams -tributaries r Open Waters r Pond Construction 3. Stream Impacts fJ Buffers S1 3a. Reason for impact (?) Bank Stabilization 3b.Impact type* Permanent 3c. Type of impact* Bank Stabilization 3d. S. name* Stream 1 3e. Stream Type* (?) Intermittent 3f. Type of Jurisdiction * Both 3g. S. width* 6 Average (feet) 3h. Impact length* 148 (linear feet) 3i. Total jurisdictional ditch impact in square feet: 0 3i. Total permanent stream impacts: 148 3i. Total stream and ditch impacts: 148 3j. Comments: The eroded left bank will only be disturbed. 6. Buffer Impacts (for DWR) 6a. Project is in which protect basin(s)? Check all that apply. fJ Neuse r Catawba r Goose Creek r Other 3i. Total temporary stream impacts: 0 r Tar -Pamlico r Randleman r Jordan Lake 6b. Impact Type Allowable 6c. Per or Temp P 6d. Stream name Stream 1 6e. Buffer mitigation required? No 6f. Zone 1 impact 580 6g. Zone 2 impact 0 6h. Total buffer impacts: Total Temporary impacts: Total Permanent impacts: Zone 1 0.00 Zone 1 580.00 Zone 2 0.00 Zone 2 0.00 Zone 1 Zone 2 Total combined buffer impacts: 580.00 0.00 6i. Comments: Only the eroded left bank will be disturbed. Please refer to attached plans and photos in section 4J above. Supporting Documentation E. Impact Justification and Mitigation 1. Avoidance and Minimization la. Specifically describe measures taken to avoid or minimize the proposed impacts in designing the project: Most of the construction will be in the eroded stream bank away from the stream, a pump around or piped diversion will be utilized to divert the clean water flow. The eroded banks must be repaired in that specific location so avoidance is difficult, the gabion baskets are designed to repair the eroded bank and should not protrude into the stream. 1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques: As stated above a pump around or a piped diversion will be utilized to divert the clean water. Erosion control will be installed below the stockpiled earth fill, the work in the stream will not occur during high flours or in periods when rain is expected. Care will be taken not to disturb the natural riffles, pools or thalweg during the construction. If needed, a dirty water pump will be utilized to dewater the construction area and pumped into a soil bag or a sediment pit. 2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State 2a. Does the project require Compensatory Mitigation for impacts to Waters of the U.S. or Waters of the State? ✓ Yes 6 No 2b. If this project DOES NOT require Compensatory Mitigation, explain why: Less than the threshold for stream impact, there is no wetland impact. F. Stormwater Management and Diffuse Flow Plan (required by DWR) 1. Diffuse Flow Plan la. Does the project include or is it adjacent to protected riparian buffers identified within one of the NC Riparian Buffer Protection Rules? c Yes rNo What type of SCM are you providing? n Level Spreader n Vegetated Conveyance (lower SHWT) n Wetland Swale (higher SHWT) n Other SCM that removes minimum 30 % nitrogen 7 Proposed project will not create concentrated stormwater flow through the buffer Diffuse Flow Documentation 2. Stormwater Management Plan 2a. Is this a NCDOT project subject to compliance with NCDOT's Individual NPDES permit NCS000250?* ✓ Yes 0' No 2b. Does this project meet the requirements for low density projects as defined in 15A NCAC 02H .1003(2)? ✓ Yes G No 2c. Does this project have a stormwater management plan (SMP) reviewed and approved under a state stormwater program or state -approved local government stormwater program? ✓ Yes r No ✓ N/A - project disturbs < 1 acre Comments: G. Supplementary Information 1. Environmental Documentation la. Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land?* ✓ Yes GNo 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)?* G Yes 6 No 3. Cumulative Impacts (DWR Requirement) 3a. Will this project result in additional development, which could impact nearby downstream water quality?* ✓ Yes r: No 3b. If you answered "no," provide a short narrative description. This permit request is for stream bank repair on an essting site, this should not generate additional impacts. 4. Sewage Disposal (DWR Requirement) 4a. Is sewage disposal required by DWR for this project?* ✓ Yes rNor 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 6' No 5b. Have you checked with the USFWS concerning Endangered Species Act impacts?* 6 Yes rNo 5c. If yes, indicate the USFWS Field Office you have contacted. Raleigh 5d. Is another Federal agency involved?* ✓ Yes 5e. Is this a DOT project located within Division's 1-8? ✓ Yes(-No r No r Unknown 5f. Will you cut any trees in order to conduct the work in waters of the U.S.? ✓ Yes r No 5g. Does this project involve bridge maintenance or removal? ✓ Yes r No 5h. Does this project involve the construction/installation of a wind turbine(s)?* ✓ Yes r 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 r No 5j. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat? Natural Heritage IPaC-This is a first order intermittent stream that is fed from a pond on Pine Hollow Golf Course. According to the Design Engineer, the outflow from the pond can be greatly reduced in summer months to conserve water in the pond impoundment reducing the stream to a trickle if not dry. 1) Red -cockaded Woodpecker -"The red -cockaded woodpecker makes its home in mature pine forests", there are no mature pine forest in the area and no mature trees will be damaged. No affect. 2) Neuse River Waterdog-"Are usually found in streams wider than 15 meters (m), deeper than 100 centimeters (cm), and with a main channel flow rate greater than 10cm/second. The project area stream is much smaller with much less flow. No affect. 3) Carolina Madtom-"Prefer clean water with permanent flow and are not tolerant of siltation and turbidity. Our stream is a first order stream with intermittent flow. No Affect 4) Atlantic Pigtoe-"Is dependent on clean, moderate -flowing water with high dissolved oxygen content in creek and riverine environments." Our stream has intermittent flow in an urban watershed. No affect. 5) Dwarf Wedgemussel-"Agriculture (both crop and livestock) and forestry operations, roads, residential areas, golf courses, and other construction activities that do not adequately control soil erosion and water run-off contribute excessive amounts of silt, pesticides, fertilizers." Our stream is located on a Golf Course in an urban environment. No affect. Consultation Documentation Upload IPaC_ Explore Location resources.pdf project_report_willowbrook_stream _ repair _0_30261 _30261.pdf 6. Essential Fish Habitat (Corps Requirement) 6a. Will this project occur in or near an area designated as an Essential Fish Habitat?* ✓ Yes (- No 423.04KB 1.48MB 6b. What data sources did you use to determine whether your site would impact an Essential Fish Habitat?* None in Johnston County 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 rNo 7b. What data sources did you use to determine whether your site would impact historic or archeological resources?* Link Above 7c. Historic or Prehistoric Information Upload SHPO.pdf 221 28KB 8. Flood Zone Designation (Corps Requirement) 8a. Will this project occur in a FEMA-designated 100-year floodplain?* ✓ Yes rNo 8c. What source(s) did you use to make the floodplain determination?* Link above Miscellaneous Comments The Preliminary JD Package is attached. Miscellaneous attachments not previously requested. Willow Stream Repair JD Package.pdf 1.49MB Signature 17- By checking the box and signing below, I certify that: • 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: Wyatt Brown Signature �i �2"Ort9'F Date 5/11/2021 March 2nd, 2021 US Army Corps of Engineers 3331 Heritage Trade Drive, Suite 105 Wake Forest, North Carolina 27587 Mr. Chris Hopper Re: Willowbrook Road, Johnston County I, the undersigned, a duly authorized owner of record of the property/properties identified herein, do authorize representatives of the Wilmington District, U.S. Army Corps of Engineers (Corps) to enter upon the property herein described for the purpose of conducting on -site investigations and issuing a determination associated with Waters of the U.S. subject to Federal jurisdiction under Section 404 of the Clean Water Act and/or Section 10 of the Rivers and Harbors Act of 1899. The property's PIN is 174004-82-5681. Also, Mr. Wyatt Brown of Brown's Environmental Group, Inc. and his subcontractor's has my permission to act as my agent on this property concerning wetlands and streams. For the Willowbrook HOA D(JNn AACtaCE.,(2, Don Matera, President DWR Pre -Filing Meeting Request Form ID#* Regional Office * Reviewer List* 20210643 Version* Raleigh Regional Office - (919) 791-4200 Stephanie Goss Pre -Filing Meeting Request submitted 3/28/2021 Contact Name * Wyatt I brown Contact Email Address* brownenvgrp@gmail.com Project Name * Willowbrook Stream Repair Project Owner* WILLOWBROOK HOMEOWNERS ASSOC! Project County* Johnston Owner Address: Street Address 14100 POSSUM TRACK ROAD Address Line 2 City State / Rovince / Region Raleigh North Carolina Fbstal / Zip Code Country 27614 United States Is this a transportation project?* r Yes ( No Type(s) of approval sought from the DWR: rJ 401 Water Quality Certification - I— 401 Water Quality Certification - Reg ula r Express I— Individual Permit I— Modification I— Shoreline Stabilization Does this project have an existing project ID#?* C Yes ( No Do you know the name of the staff member you would like to request a meeting with? Stephanie Goss, Rick Trone (I have discussed with Stephanie) Please give a brief project description below and include location information.* The bank of the stream has eroded well into the bank getting dangerously close to inhabited condos. This repair should stabilize the bank and stop the erosion. Please give a couple of dates you are available for a meeting. 4/14/2021 4/15/2021 Please attach the documentation you would like to have the meeting about. c-00 property information (3).pdf c-1 existing conditions (2).pdf c-2 Proposed Retaining Wall and (2).pdf C-3 Stream Cross -Sections (1).pdf c-4 retaining wall cross-sectio (1).pdf D-1 Retaining Wall Details.pdf D-2 Erosion control Details (1).pdf site photos.pdf pdf only 7.12MB 595.79KB 713.46KB 267.63KB 543.76KB 2.84MB 678.47KB 1.19MB By digitally signing below, I certify that I have read and understood that per the Federal Clean Water Act Section 401 Certification Rule the following statements: • This form completes the requirement of the Pre -Filing Meeting Request in the Clean Water Act Section 401 Certification Rule. • I understand by signing this form that I cannot submit my application until 30 calendar days after this pre -filing meeting request. • !also understand that DWR is not required to respond or grant the meeting request. Your project's thirty -day clock started upon receipt of this application. You will receive notification regarding meeting location and time if a meeting is necessary. You will receive notification when the thirty -day clock has expired, and you can submit an application. Signature �iyazcet Submittal Date 3/28/2021 • • Site k}+ USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Census Bureau TIGER/Line data; USFS Road Data; Natural Earth Data; U.S. Department of State Humanitarian Information Unit; and NOAA National Centers for Environmental Informatior?UKViastal Relief Model. Data refreshed May, 2020. IOHN5CON 3 CUN NORTH•CAROLINA * * * DISCLAIMER Johnston County assumes no legal responsibility for the information represented here. WILLOWBROQ44 1. +, V , > L�OWBRO �1O l + 411 J PI—%- .' N r`k PH. 2 A SEC. 14' \ tWVI WBR 1� . LOWBROO Approximate site location Scale: 1:4264 - 1 in. = 355.35 feet (The scale is only accurate when printed landscape on a 8 1/2 x 11 size sheet with no page scaling.) Johnston County GIS May 2, 2021 Vicinity Map Scale: 1" = 1000' USGS Garner and Clayton Quadrangle Maps 2016 Garner Qu a• rangle Flap t 0• Site L fr.,'' •� r i i c 2016 ClaytaisbQuadrangle Scale: 1" = 1000' Scale: 1" = 1000' ir 1' Clayton USDA Soil Survey Soil Symbol Soil Name Hydrologic Group Seasonally High Water Table RnF Rion B >6.0' WoB, WoD Wedowee B >6.0' UcC Uchee A 3.5'-5.0' NkB Nankin C >6.0' Ra Rains B/D 0'-1.0' NoA, NoB Norfolk B 4.0'-6.0' FORE ST7DR. TRDR'I II Project Discussion Stream bank erosion is occurring adjacent to two (2) residential buildings, and if left unchecked, could undermine the deck structures. Approximately 102 lineal feet of Gabion Wall will be constructed to stabilize the stream bank. To protect the work area and minimize sediment issues, the water flow in the stream will be diverted by installing an upslope soil berm and a downslope rock check dam. Water accumulation upslope of the soil berm will be pumped downslope of the stone check dam. All work will be conducted within the Willowbrook Home Owners common property. Total land disturbance is 0.19 acres (8276 SF). To further minmize flow through the disturbed stream area, the pond located 600 feet upstream, will be lowered. The pond lowering will be the responsibility of Willowbrook Homeowners Association. The retaining wall with a maximum height of 4.5 ft. is designed to withstand a 100 year rain event and has a Factor of Safety of more than 2 against overturning and sliding. SCHEDULE OF SPECIAL INSPECTIONS IT-4 MODULAR RETAINING WALLS (NCBC SECTION 1704 AND 1807.2.5) ITEM MONITORING NOTES AND SCOPE MATERIAL VERIFICATION PERIODIC PERIODIC • VERIFY GABION STONE FILL, AND FILTER FABRIC • VERIFY GABION , LASING AND TIE WIRE TYPE AND SIZES FOUNDATIONS PERIODIC CONTINUOUS • PERFORM SOIL TESTING OF FOUNDATION AREA TO VERIFY ADEQUATE BEARING CAPACITY • VERIFY THICKNESS AND WIDTH OF RETAINING WALL LEVELING PAD STRUCTURAL FILL CONTINUOUS • VERIFY USE OF PROPER SOIL, DENSITIES, MOISTURE CONTENT, AND LIFT THICKNESSES DURING PLACEMENT AND COMPACTION OF STRUCTURAL FILL WALL CONSTRUCTION PERIODIC PERIODIC • VERIFY INSTALLATION OF GABION BASKETS • VERIFY LACING AND TIE WIRE LOCATIONS AND INSTALLATION IN ACCORDANCE WITH SECTION 1704 OF THE NORTH CAROLINA BUILDING CODE, RETAINING WALLS WITH A CUMULATIVE VERICAL RELIEF GREATER THAN 5 FEET IN HEIGHT WITHIN A HORIZONTAL SEPARATION DISTANCE OF 50 FEET OR RETAINING WALLS LESS THAN 5 FEET IN CUMULATIVE VERTICAL RELIEF AND ADJACENT TO STRUCTURES LOCATED CLOSER THAN THE VERTICAL RELIEF REQUIRE SPECIAL INSPECTION TESTING. THE OWNER SHALL ENGAGE A QUALIFIED 3RD PARTY INDEPENDENT TESTING AGENCY TO CONDUCT SPECIAL INSPECTIONS IN ACCORDANCE WITH SECTION 1807.2.5 OF THE NORTH CAROLINA BUILDING CODE FOR THE SITE RETAINING WALL(S) PROVIDED ON THESE PLANS. AFTER CONSTRUCTION, A SUMMARY OF THE SPECIAL INSPECTION TESTING SHALL BE PROVIDED BY THE TESTING AGENCY TO THE BUILDING OFFICIAL AND THE DESIGN PROFESSIONAL IN RESPONSIBLE CHARGE FOR THE FINAL REVIEW. Drawing List C-00 Property Information C-1 Existing Conditions C-2 Proposed Retaining Wall and Erosioin Control C-3 Stream Cross -Sections C-4 Retaining Wall Cross -Sections D-1 Retaining Wall Details D-2 Erosion Control Details Property Owner: Willowbrook Homeowners Association Don Matera,Willowbrook HOA Board Member (919) 600-4800 donmatera@msn.com Property Information: Parcell Id: 05G01192E N C P I N :174004-82-4693 Book/Page: 01197/0101 Acreage: 0.610 acres Address: Not Asigned ENGINEERING & ENVIRONMENTAL 6,, SCIENCE COMPANY 3008 Anderson Drive Raleigh, NC 27609 (919) 781-7798 Property Information Stream Bank Stabilization 2009 Willow Hill Lane Clayton, NC 27520 02/17/21 DRAWN: TPS REVISED: SCALE: See Drawings Sheet No. Willowbrook HOA NCPIN: 174004-82- x102.36 101.68 x 100.33 x. x 94.27 99.61 x x 97.35 x 98.29 101.82 x •i 0 Paved Parking Lot Gaped Area Invert Elevation: 84' (Approx.) 98.89 x Scale: 1 "=10' 10 20 99.49 x Michael M Leham 2009 Willow Hill Ln Clayton NC 27520 NCPIN: 174004-82-4697 94.45 x Chana D Perrell 2005 Willow Hill Ln Clayton, NC 27520 NCPIN: 174004-82-4699 x 96.40 98.78 x x 96.40 x98.78 x 90.37 S fin amine x 90.95 94.67 x x94.94 x 96.52 LEGEND x 96.40 Existing Toe of Stream Bank Exisiting Top of Bank Topo Lines Spot Elevations Property Line Tree Line ENGINEERING & ENVIRONMENTAL 6,, SCIENCE COMPANY 3008 Anderson Drive Raleigh, NC 27609 (919) 781-7798 Existing Conditioins Stream Bank Stabilization 2009 Willow Hill Lane Clayton, NC 27520 02/17/21 DRAWN: TPS REVISED: SCALE: See Drawings Sheet No. Center Reference Line 0 102.36 101.68 100.33 x- 9961 94.27 Cross -Section 1 Scale: 1 "=10' 10 20 Paved Parking Lot Willowbrook H NCPIN: 004-82-4693 aped Area oo. etainin Michael M Leham 2009 Willow Hill Ln Clayton NC 27520 NCPIN: 174004-82-4697 House •�= _.,ate..= �''�'•��� I 11 I II I II I 11 I I I I II I I I I I— I= I I II I I II I I I I I = 91. IIh. I illllll I�•II III el +I II 1 I11 I I� a —I.eii®Ilell� �.. n n neneneno� 101.82 Cross -Section 2 4' (Approx.) 99.51 c 94.45 x Cross -Section 5 Cross -Section 3 99.49 Cross-Sectio Construction and Erosion Control Sequence 1. Install silt fence below soil stock pile area. 2. Construct upslope soil berm. and install 1 ft. diameter smooth inner wall corrugated plastic pipe. 3. Construct downslope rock check dam. 4. Remove existing wood pedestrian bridge. 5. Start construction of retaining wall. 6. Once retaining wall is completed, remove upslope soil berm. Re -deposit soil at stock pile area and grade ground flush. 7. Spread rock from downslope check dam uniformly along the stream. 8. Re -vegetate all areas disturbed. 8. Install excelsior and re -vegetate along stream banks that were disturb by the upslope soil berm removal. Chana D Perrell 2005 Willow Hill Ln Clayton, NC 27520 NCPIN: 174004-82-4699 House 96.40 Limits of Disturbance 98.78 Cross -Sec ining Wall 96.40 98.78 Cross -Section 7 Notes: 1. Stream Impact is 148 lineal feet. 2. Stream Buffer Area Impacted is 580 square feet. illo a •• OA C P I N : 174004-82 ridge Existin SeWOr Line _9A..59 5 92.46 Center Reference Line (94.94 96.52 Cross -Section 8 0 x 96.40 LEGEND Existing Toe of Stream Bank -- -- Exisiting Top of Bank Existing Topo Lines Spot Elevations Property Line Proposed Retaining Wall Limits of Disturbance Existing Tree Line Zone 1 Impacted Buffer Areas SEED BED PREP AND SEEDING SCHEDULE. PERMANENT SEEDING MIXTURE FOR AREAS 3:1 AND FLATTER SPECIES RATE (LB./ACRE) TALL FESCUE TALL FESCUE AND ABRUZZI RYE TALL FESCUE COMMON (HULLED) BERMUDA TEMPORARY SEEDING MIXTURE 300 300 300 25 OPTIMUM PLANTING TIME AUGUST 15-NOV 1 NOV 1-MARCH 1 MARCH 1-APRIL 15 APRIL 15-JUNE 30 *RESEED ACCORDING TO OPTIMUM PLANTING TIMES IN PERMANENT SEEDING SCHEDULE. ALLOW TEMPORARY COVER TO GET NO MORE THAN 12" HT. BEFORE MOWING. SPECIES RATE (LB./ACRE) DATE TALL FESCUE AND BROWNTOP MILLET (OR) SORGHUM-SUDAN HYBRIDS 35 TOTAL JULY 15-AUGUST 15 PERMANENT SEEDING MIXTURE FOR AREAS 3:1 TO 2:1 SPECIES RATE (LB./ACRE) SERICEA LESPEDEZA (SCARIFIED) 50 AND ADD TALL FESCUE 120 OR ADD WEEPING LOVE GRASS 10 OR ADD COMMON (HULLED) BERMUDA 25 BERMUDA (UNHULLED) 30 PERMANENT SEEDING MIXTURE FOR AREAS 2:1 AND STEEPER OPTIMUM PLANTING TIME MARCH 1-JUNE 1 MARCH 1-JUNE 1 MARCH 1-JUNE 30 MARCH 1-JUNE 30 DEC 30 - APRIL 1 SPECIES RATE (LB./ACRE) WEEPING LOVE GRASS 40 TEMPORARY SEEDING MIXTURE OPTIMUM PLANTING TIME MARCH 1-JUNE 30 *RESEED ACCORDING TO OPTIMUM PLANTING TIMES IN PERMANENT SEEDING SCHEDULE. ALLOW TEMPORARY COVER TO GET NO MORE THAN 12" HT. BEFORE MOWING. SPECIES RATE (LB./ACRE) DATE TALL FESCUE BROWNTOP MILLET (OR) SORGHUM-SUDAN HYBRIDS 120 35 30 JUNE 1-SEPT 1 SERICEA LESPEDEZA (UNHULLED UNSCARIFIED) AND TALL FESCUE SORGHUM-SUDAN HYBRIDS 70 120 30 SEPT 1-MARCH 1 * ADD ABRUZZI RYE 25 NOV 1-MARCH 1 SOIL AMENDMENTS SHALL BE TILLED OR OTHERWISE MIXED TO 8" DEPTH PRIOR TO SEEDING THE TOP 3" SHALL PULVERIZED TO PROVIDE A UNIFORM SEED BED. HARD PAN SHALL BE CHISLED WITH SOIL SCARIFIER IF CONDITIONS WARRENT BY ON SITE INSPECTION. ALL ROCKS AND DEBRIS SHALL BE REMOVED PRIOR TO FERTILIZING AND SEEDING EXPOSED AREAS. UNLESS INDICATED OTHERWISE BY SOIL TEST REPORT: APPLY AGRICULTURAL LIMESTONE AT A RATE OF 95 LBS PER 1000 SF APPLY FERTILIZER AT A RATE OF 21 LBS PER 1000 SF (5-10-10). MULCH MULCH - 70 LBS PER 1000 SF - SMALL GRAIN STRAW OR EQUIVALENT COVER. ANCHOR - ASPHALT EMULSION ON MULCHED AREAS @ 200-400 GAL./ACRE (TYPE R.S.) MAINTENANCE REFERTILIZE AT THE END OF THE WARRANTY PERIOD ACCORDING TO NC COOP EXT SVC. RECOMMENDATIONS MOW TO 3" HT. WHEN AVERAGE HT. OF GRASS BECOMES 5". RE -DISK, APPLY SOIL AMENDMENTS AND RESEED & MULCH DAMAGED OR DEAD AREAS IMMEDIATELY. ENGINEERING & ENVIRONMENTAL 6,, SCIENCE COMPANY 3008 Anderson Drive Raleigh, NC 27609 (919) 781-7798 Proposed Retaining Wall And Erossion Control Measures Stream Bank Stabilization 2009 Willow Hill Lane Clayton, NC 27520 02/17/21 DRAWN: TPS REVISED: SCALE: See Drawings Sheet No. CROSS-SECTION 1 CROSS-SECTION 2 105 100 95 90 85 25 105 100 95 90 85 25 20 15 10 5 0 5 10 15 CROSS-SECTION 3 20 25 30 35 40 45 Gab ion Wall ` 1e_• jrag u t s ,era' .3o0°°e 0°0 a°c, v o °o °e 0 °o•e°o °o °o� 0,0 �0,0 0,0 cam/ • O 0°0 0°e 0°O,0-'00600°O. JEMENEEMENEEMEM 105 100 95 90 85 25 105 100 95 90 85 20 20 15 10 5 0 5 10 15 CROSS-SECTION 5 20 25 30 35 40 105 100 95 90 85 25 105 100 95 90 85 45 40 20 15 10 5 0 5 10 15 20 CROSS-SECTION 4 25 30 35 40 45 Gabion • 0°`J', 00,0 00c INEEMERNEEN W all 0 W 0 0 0 Ga 'ion Wall 4J4/ 4JcdJOsJ4 ° off °off 100- 2 10- ear -ar 2-year 20 15 10 5 0 5 10 15 CROSS-SECTION 7 20 25 30 35 40 45 G abion all V ��w�• ♦- o o oOa C4OA� o 60A000 °, Pam, Pc 100-year 25-year 10-yea 2 Y. 15 10 5 0 5 10 15 20 25 30 35 40 45 105 100 95 90 85 25 105 100 95 90 85 50 35 35 30 25 20 15 10 5 0 5 CROSS-SECTION 6 10 15 20 25 30 0 x W m O ❑ Gabi on Wall ° -cam rna� 100- ear 10-year -year 20 15 10 5 0 5 10 15 20 CROSS-SECTION 8 25 30 35 30 25 20 15 10 5 0 5 10 15 20 25 40 45 Existing Ground Level Proposed Ground Level Horizontal and Vertical Scale: 1 "=5' ENGINEERING & ENVIRONMENTAL 2 C SCIENCE COMPANY 3008 Anderson Drive Raleigh, NC 27609 (919) 781-7798 Stream Cross -Sections Stream Bank Stabilization 2009 Willow Hill Lane Clayton, NC 27520 02/17/21 DRAWN: REVISED: SCALE: See Drawings Sheet No. 1 nn Elevation, Ft. © c.m T of �B nk Existin Ground S rf- ` 7077 _ 77�,7 h ,77-L%OO 0�,0O. 77wow•re WO K o o O O� o KDW 07 �O�7 o o e o07,)77 o off(,1<DI O o ) O o ) o O 1 0 20 ) O ) � � � ��� � �� �o �. oo � �o n0 �o �o 00 '� ,o 00 ,° ,00 � �� �o �0 � 00 oo � �o 00 imo�� � �> \✓ � �} _> °00°D000°I o\�<> \✓ �> O � �✓ OO _> A� O _ °O,00 � <> \,/ � O°O � _' b° �✓ OO _> �,-/ �> °00° <> \✓ O°00 �> O , \✓ � OO _> �,� � {> °00° A� O O°00° �> O \,/ OO {> \,/ O {> 000° _ A� O 0°0 '> °Ill _' \� O O O 0° ° �✓ 0)0Al'ki,il° 0 � °��ez 0°0) 0 � � 0 J � 00 O 00) 0 Wr _ \,/ O 00 � \,/ 0 1 � °00° , O ,00°]00 ,0.° c, P k< ����� ea • ... , _ o 1� ;, <> O O O O°� O° O On <> O O° O O° <> O°0 -'_ ° ��/ O > °n O° < > �✓ O°� O°00 O I Li'�5 ODO \✓ 0° L u� O°DD 0 fl O°fl O O°O �-' 0�� O°f i°�° O 0 I!°0 OO 0 0. O O° O O �✓0_)„„, ODO1, O O° K� O°� O° O O°� O°0 O°� o -' O :° O O Q Q �O °O O O , .0 ,(DO° i .. , . , - .. t t , o H • - 0 ., �° o 0 0 0 0ti�� �► -� _ ri to (� O O • A �. w . - w 7<-> w w' W O7� W 0lir W 07i> W 07 W 07� W 07 M 0,w M 07� 07c-) O7� � 1,07W W 07 W 07� W 07 W 07W W 07 O ,c O O o 9a °41 O °• °00 °�i0 �� °���� °� � °��0 ° � O�i °� ° � °00 °0� �� °�� °�10 °00 °���� �� °��,�� O °� 0 °0I °� 00 OO�i °� O ° O 00 °��� ° �� I,�0 °� O ° O 0 °000 O °���� O �� °OHO O ° 0� °��: O ��� �0. °�,� O °�: � a � a a a � a a a a � a a � a 0� � 0 � 0 a �� a 0 a 0 a � 0 _0 _� a _ a _0 a _0 a _0 , _0 a _ a _0 ., _0 a ., c a a o O o O o� O 0 00� 00 � 000 0�00 . O � 00 O O 00 O o00 q owr wow r ovr<-> grovv iP WV W I gI ovro W owV .PoW W OWV W ow WOW ovr, W ow W W ow W 1 ! j j1l jl j11l j ! j lj l j!emeeeemeeeeeeemeeeeememeee �a jlm e Aj! O � 0000000000000000000000000000000000000 85 1 0+45 nil 0+50 Station 0+75 1+00 1+10 Elevation, Ft. © v1 Top of Bank Existing Ground Surface O c� �U. 0 0 ° 0� Oc <-) On 70 � a 77 7� ��� 7)777 77 � � � - L ����7 � � � 177i 0 0 0 0 0 if 0 0 0 f �� 0 0 .� o � 0°0a0°0 �.� �� 000 0� �.� O a0 c> 0a�i�a0iOa�i0a0�� o c> o c 00 o c i. o Al c) b ills o Uo , �I® • � �o a1�diLA �.c et o. Lh fij O ! s0�0�0�0 0 c � �o O� o 0�0 D o 0 o aD c O�i0 � �o O� o a0i�0e c> O �10a0 0)o o�0 000 • • �� 0 0 0 0 OW • � � C 0��0 0 O C� 0. 0 4 O O �o O ( oo OOOoO 0 .c, 0 0 c o o o oO �0�0���0o0 �00oo�o T�eO�0v0�0�r����� Q _ • 0 0� a a oHt: 0 0 a� o • 0 0 0� 0 0 io 0 oII+) O >7<-) O 7s O O 7� � i� � _— O a "� .� � 7� � '� � � >7� � 7� � � 7b W 7� ' � 7� � >7� � 7�> � 7� � 7� � 7� � �70 7� t •.- - - �_a _a O O 0 o 0 e 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o 0 0 0 00 00�0 O0�O O_>O� 00�0 ° 00 O00 O �O O0 00 000 Oo Ot�O Oo Oo00 00 0O �� o 0O � 0O �� >00 0 00 00 o 0 �OoO rem Emmy= 85 1 +10 Horizontal and Vertical Scale: 1 1+25 "=2' Station 1+50 1 +65 ENGINEERING & ENVIRONMENTAL 2C SCIENCE COMPANY DATE: 02/17/21 3008 Anderson Drive Raleigh, NC 27609 6 (919) 781-7798 DRAWN: TPS 02/17/21 an Retaining Wall Cross -Section REVISED: �04 $y; ''�' ` Q � SCALE: See Drawings SEAL Z. t 15472 / _ _,AN _; %�.o,� FNGItdEE�/����` %, �.K.8H��������� Stream Bank Stabilization 2009 Willow Hill Lane Clayton, NC 27520 Sheet No. C-4 of: WORK DISCRIPTION EXECUTION A. Retaining Wall: 1. Work consists of furnishing and construction of 102 lineal feet of Gabion Retaining Wall System in accordance with the specifications and in reasonably close conformity with the lines, grades design and dimensions shown on the plans. B. Earthwork: 1. Preparing foundation soil subgrade to the lines and grades shown on the drawings. 2. Furnishing and installing leveling pad to the lines and grades shown on the drawings. 3. Prepare final soil subgrade after retaining wall installation to the lines and grades shown on the drawings. C. Erosion Control: 1. Although an erosion control permit is not required, a stone check dam shall be installed downslope of the disturbance and a soil berm shall be installed upslope of the stream disturbance. Any soil excavated to install the retaining wall shall have a silt fence install downslope of stockpiled soils. 2. All disturbed areas will require revegetation as per the plans. D. Surface Water Control: 1. An existing pond is located approximately 600 ft. upslope of the retaining wall installation. The contractor will coordinate with the Engineer, T. Patrick Shillington, P. E., to ensure that the pond water level is sufficiently lowered to reduce stream flow through the construction site. The Willowbrook Home Owner's Associations shall be responsible for lowering the water level in the pond. 2. To further minimized stream surface water flow impact, a 1 ft. diameter smoothed inner wall corrugated pipe shall be installed to convey the water through the disturbed stream area. 3. During installation of the leveling pad, some dewatering is expected by the contractor. MATERIALS A. Gabion Baskets: 1. Gabion baskets shall consist of twisted hexagonal mesh meeting ASTM A975. Hexagonal openings shall not exceed 3 inches. The mesh wire shall be galvanized steel and have a diameter of 0.120 inches. (11 Gage). 2. Selvedge galvanized wire shall have a diameter of 0.150 inches (9 Gage). 3. Lacing and tie galvanized wire shall have a diameter of 0.87 inches (13.5 Gage). 4. All galvanized wire shall conform to ASTM A510, grade number 1006 through 1020. Wire shall have a minimum tensile strength of 60,000 psi, and a Class 3 coating conforming to ASTM A 641. The galvanized coating shall be applied by the hot dip process in accordance with ASTM A 385 and ASTM A 386. B. Filter Fabric: 1. Filter Fabric shall be used to separate the No. 57 Stone and the Gabion Stone Fill from the native soil and soil backfill. The Filter Fabric shall be minimum 4.0 oz/sy, polypropylene, needle - punched nonwoven fabric. C. Leveling/Foundation Base: 1. The leveling/foundation base shall consist of No. 57 Stone as defined by NCDOT. D. Gabion Stone Fill: 1. Gabion stone fill shall consist of Class B Erosion Control Stone as defined by NCDOT. E. Soil Backfill: 1. Native soil excavated to install the Gabion Wall can be re -used for backfill behind the wall. 2. The backfill shall be placed in 6 inch loose lifts and compacted to 92% of Standard Proctor Maximum Dry Density (ASTM D-698). 3. Initial compaction may require mechanical hand operated equipment. FIELD QUALITY CONTROL A. Quality Assurance - The Owner shall/may engage inspection and testing services, including independent laboratories, to provide quality assurance and testing services during construction. This does not relieve the Contractor from securing the necessary construction quality control testing. Quality Assurance should include foundation soil inspection, verification of geotechnical design parameters and verification that the contractor's quality control testing is adequate as a minimum. Quality Assurance shall also include observation of construction for general compliance with design drawings and project specifications. B. The wall contractor shall correct work that does not meet these specifications or the requirements shown on the Drawings at the wall contractor's expense. C. Quality control testing shall include soil and backfill testing to verify soil types and compaction and verification that the retaining wall is being constructed in accordance with the design plans and project specifications. The compaction test locations should vary and cover the entire area of the reinforced soil zone, including the area compacted A. Examination: 1. Prior to commencing work, the retaining wall contractor shall examine the areas and conditions under which the retaining wall system is to be erected, and notify the [Architect] [Engineer] [Owner] [General Contractor] in writing of conditions detrimental to the proper and timely completion of the work. Do not proceed with the work until unsatisfactory conditions have been corrected. 2. Promptly notify the wall design engineer of site conditions which may affect wall performance, soil conditions observed other than those assumed, or other conditions that may require a reevaluation of the wall design. 3. Verify the location of existing structures and utilities prior to excavation. Ensure surrounding structures are protected from the effects of wall excavation. Excavation support, if required, is the responsibility of the Contractor, including the stability of the excavation and its influence on adjacent properties and structures. B. Excavation and Foundation Soil Preparation: 1. Contractor shall excavate to the lines and grades shown on the construction drawings. 2. The Project Geotechnical Engineer will examine foundation soil to ensure that the actual foundation soil strength meets or exceeds that indicated on the drawings. At the direction of the project geotechnical engineer, remove soil not meeting the required strength, and will determine if the foundation soils will require special treatment or correction to control total and differential settlement. C. Leveling Pad: 1. Leveling pad material shall be placed to the lines and grades shown on the construction drawings. 2. Leveling pad shall extend a minimum of 6 inches beyond both the front and back of the lower most gabion units. 3. Leveling pad materials shall have a minimum thickness of 8 inches and consist of No. 57 stone as defined by NCDOT. 4. Final surface of Leveling pad shall be prepared to insure full contact to the base surface of the concrete Facing Units and have a tolerance within +/- 1 inch over a 10 foot span. D. Gabions: 1. Gabions shall be fabricated in such a manner that the sides, ends, lid and diaphragms can be assemble at the construction site into the baskets of the sizes specified: 3 ft. wide, 3 ft. long, 3 ft. high 4.5 ft. wide, 3 ft. long, 3 ft. high 2. Lacing wire shall be used for both the assembly of baskets and connecting baskets together. The lacing procedure consists of cutting a length of wire approximately 1.5 times the distance to be laced (not to exceed 5 ft.), securing one end of the wire at the corner by looping and twisting, alternately lacing with single and double loops at approximately four (4) inch intervals, and securing the other end of the wire to selvedges by looping and twisting. 3. Placing gabions shall consist of installing baskets to the lines and grades shown on the drawings. Gabions shall be securely tied to each adjoining gabion with lacing wire along the vertical reinforced edges and top selvedges. Empty gabion sections stacked on a filled gabion shall be tightly laced to the filled lower section along the front and back. For the end sections only, the layer of empty gabions placed on top of the filled gabions must be wired to the latter at the front, back and lateral edges. 4. The gabions shall be carefully filled with rock, by either machine or hand placement to ensure alignment, avoid bulges, and provide a compact mass with minimum voids. Machine placement may have to be supplemented with hand work to ensure a neat, compact, and square appearance. A stretcher, block and tackle, come -along, ect. may be used to stretch the wire baskets and hold alignment during the filling process. 5. Cells in rows shall be filled in stages such that the depth of rock placed in any cell does not exceed the depth in an adjoining cell by more than one (1) ft. 6. Stone filling shall be conducted in 12 inch lifts. 7. During stone filling, the tie wires shall be installed per the Gabion Tie Wire Detail. All tie wires shall be looped around three (3) mesh openings and the ends of the wires shall be securely twisted with a minimum of five (5) twists after looping. Internal Radius Joint Face of Wall Leave End Panel Flat Joint Notes: 1. For interior curves leave one end down and fix the adjacent gavion to the rear vertical of the adjacent gabion. 2. For exterior curves leave one end down and fix adjacent gavion to the front verical of the adjacent gavion. External Radius Face of Wall Leave End Panel Flat Gabion Curve Construction Detial Plan View (NTS) SEE LACING DETAIL FOR LACING LIP DOWN - LACE FRONT, SIDE tiBACK i .1145111.7ABIONS4011 "41110 TOGETHER TWISTED WIRE MESH --- DOUBLE LOOP Selvedge Wire CONTINUOUS TIE WIRE TO NEXT SINGLE LOOP. Lacing Locations (NTS) SINGLE LOOP Filter Fabric 4" NOMINAL SPACING Lacing Detail (NTS) Ground Surface ccccc NativeSoil Used ForBackfillL c c' c c c CCCCCCCCCC Cccccc �o!dad PrctoN f\ S1MPCCCC '98) 3' 36" 1 12" 12" 12" 36" 36" End Gabion Adjacent Gabion _ 1----_1- - Ties k 36" Front Perspective View (NTS) 36" '6" 12" Ties End Gabion n Adjacent Gabion n n A 12" ck A 12" • 19" 12" 12" 12" 12" 12" Stream Bed 4Ca0 °O0 °0 0 °1000 0 ° 0 00 v.6 1 rrICS ,:0?)c:C-7<pC,°(0; Ow0 °L 0'00wc) o oL 3' 0; 0,00 0,00 0 D0OA I � °0,10 0/0 A 30o °cA0 n a� ° 0 • •CD 0OC�0OC�0O���OC� • •CD 0 •0 •0 •0 •0 •0 a 4e1106C90' 0 0 0 0 0 Q Q Q Q Q Q,NCOC�0�C,0°7C,0°7C�0u,0,0>C�c: 4.5' 5.5' 1 1 8" Gabion Retaining Wall Cross -Section (NTS) Plan View (NTS) Gabion Tie Wire Detail (NTS) Internal Connecting Wires Shall Encompass 3 Mess Spaces Internal Tie Wire Connection Detail (NTS) E�s 02/16/21 f SEAL r-- 15472 '%,�A9FNG1NEEe \Gt� ENGINEERING & ENVIRONMENTAL SCIENCE COMPANY 3008 Anderson Drive Raleigh, NC 27609 (919) 781-7798 Stream Bank Stabilization 2009 Willow Hill Lane Clayton, NC 27520 DATE: 02/16/21 DRAWN: TPS REVISED: SCALE: NTS Sheet No. D-1 Front View 12' Min. 1.0' Upslope Soil Berm Details (NTS) Laminated Plastic Lining or Impermeable Geotextile Fabric CLASS B EROSION CONTROL STONE FLOW DIRECTION Cross -Section Burry 1 ft. 3.5' Laminated Plastic Lining or Impermeable Geotextile Fabric 3 1 ft. Dia. Inner Smooth Wall, Corragated Pipe Maintenance Notes: Check the fabric lined spillway for damage and make any required repairs with fabric that spans the full width of the spillway. Check the embankment for erosion damage. Make all neacessary repairs immediately. 111111 III Downslope Rock Check Dam Details (NTS) CROSS SECTION 5' 00000000000000000000 00000000000000000000000 0000000000000000000000000 00000000000000000000000000000oo 0000000000000000000000000000000000 0000000000000000000000000000000000000 00000000000000000000000000000000000000000 000000000000000000000000000000000000000000000 3.5000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000 -0000000^^^^^^^^^^^^^^^^^^^^00000000000000000000000000 o-o-0000000000000 A 00000000000000000000000 00000000000000(. 1.5 0000000000000000000000 00000000000000000000 000000000000000000 00000000000000000 000000000000000 0000000000000 000000000000 0000000000 4' FILTER FABRIC 2' lft. THICK No.57 STONE 5.0 3 FRONT VEIW 36' Burry 1 ft.- 7 — J 000 _.000 00000 ..00000 00000000000000000000000000000 00000000000000000000000000000000 000000000000000000000000000 J 0000000000000000000000000000000 00000000000000000000000000 000000000000000000000000000000 00000000000000000000000000 000000000000000000000000000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 c J 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 000000000000000000000000 10000000000000000000000000000 00000000000000000000000, '000000000000000000000000000 0000000000000000000000 35 0000000000000000000000000 0000000000000000000000 0000000000000000000000000 000000000000000000000c 0000000000000000000000000 00000000000000000000 0000000000000000000 00000000000000000 00000000000000000 0000000000000000r 100000000000000000000000 00000000000000000000000 000000000000000000000 000000000000000000000 J 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 FILTER FABRIC Maintenance Notes: Check the embankment for erosion damage. Replace No. 57 Stone when clogged by sediment. Make all neacessary repairs immediately. Cross -Section 1 1 CLASS B EROSION CONTROL STONE EXCELSIOR DETAILS (NTS) Exclelsior Channel Bottom Minimum 10 Gauge Line Wires 1 l 1'I-I 'I'i 1 11ii 1 11ii 1 11ii I I I ITI 11 El I El I SILT FENCE DETAILS Minimum 12 - 1/2 Gauge Intermediate Wires 8' MAXIMUM (variable as directed by the engineer) **Ass:** iss1"4.4 **** *ANS*** ifs**4444 -Silt Fence Fabric InslaRed to see and * "4**44.4114.8*** **A? wire from top • — I 11= — 1III11=1'III=III=III''=III-III-III=III-IIII =III=III-III-III=III''=III-III-III-III''=III=III=III'=III= =III=III' Grade 111111-III1 II I11 IT 3'-0" 2'-0" 26" Steel Post Woven Wire Fabric Silt Fence Geotextile Fabric 4" Min. Silt Fence Specifications 1. Steel posts shall be a minimum of 5 ft. long, weigh a minimum of 1.3 lb/ft, and have projections to aid in fastening the wire or fabric. Steel posts shall also have a metal plate welded near the bottom such that when the post is driven to the proper depth, the plate will be below the ground level for added stability. 2. Woven Wire Fence shall conform to the requirements of ASTM A 116, Class I zinc coating for wire. The fence shall be at least 32 in. high and shall have at least 6 line (horizontal) wires. Stay (vertical) wires shall be spaced 12 in. apart. The top and bottom wires shall be 10 gage. All other wires shall be 12 1/2 gage. 3. Filter Fabric shall be composed of fibers consisting of long chain synthetic polymers composed of at least 85% by weight of polyolefins, polyesters, or polyamides. The fibers shall be formed into a network such that the filaments or yarns retain dimensional stability relative to each other. The filter fabric shall be free of any treatment or coating which might adversely alter its physical properties after installation. The fabric shall be free of defects or flaws which significantly affect its physical and/or filtering properties. The fabric shall have a minimum width of 36 inches. The filter fabric shall be furnished with suitable wrapping for protection against moisture and extended ultraviolet prior to placement. EXCELSIOR SPECIFICATIONS 1. The erosion control blanket (excelsior) shall consist of a machine produced blanket of curled natural fibers. The fiber thickness shall be consistent and evenly distributed over the entire area of the blanket. Both sides of the blanket shall be covered with an extra heavy-duty plastic netting with a mesh opening of approximately 3/4 inch. by 3/4 inch. 2. Installation shall start at the furthest point downstream of the reshaped river bank and proceed upslope with each panel overlapping the other as per the manufacturer's specifications. 3. For each panel, start installation near the toe of each bank at the normal river stage level and install up the bank. From the toe to the top of the bank, one complete panel shall be installed (no splicing is allowed). 4. The blankets shall be stapled in place as per the manufacturer's specifications. 5. Anchor the top of each panel by burying the panel edge. Grade 8" Minimum Cover over Skirt * 4" Minimum horizontal turn The filter fabric shall meet the following minimum physical requirements: PROPERTY* TEST METHOD REQUIRED VALUE Tensile Strength ASTM D 4632 400 Newtons (901b) Elongation ASTM D 4632 <50% - fabric self supporting > 50% - fabric requires woven wire backing Apparent Opening Size (AOS)** ASTM D 4751 0.84 millimeter (U.S. Sieve #20) Permitivity ASTM D 4491 0.01 Sec:' Ultraviolet Stability (retained strength after 500hrs of ultraviolet exposure) ASTM D 4355 70% 4. A 6 in. x 6 in. trench shall be dug on the upstream side of the silt fence. The silt fence shall line the trench and extend up the posts for the remainder of the fabric width. The trench shall then be backfilled and tamped. Silt fence fabrics shall be spliced together only at supporting posts with a minimum of 6 in. of overlap and in such a manner to prevent silt from passing between the two ends. At the time of installation, the fabric will be rejected if it has any defects, deterioration, or other damage incurred during manufacture, transportation, or storage. Silt Fence Maintenance Considerations 1. Inspect silt fences at least once a week and after each rainfall. Make any required repairs immediately. 2. Should the fabric of a sediment fence collapse, tear, decompose or become ineffective, replace it promptly. 3. Remove the sediment deposits as necessary to provide adequate storage volume for the next rain and to reduce pressure on the fence. Take care to avoid underminmg the fence during cleanout. 4. Remove all fencing materials and unstable sediment deposits and bring the area to grade and stabilize it after the contributing drainage area has been properly stabilized. ENGINEERING & ENVIRONMENTAL 6,, SCIENCE COMPANY 3008 Anderson Drive Raleigh, NC 27609 (919) 781-7798 Erosion Control Details Stream Bank Stabilization 2009 Willow Hill Lane Clayton, NC 27520 02/17/21 DRAWN: TPS REVISED: SCALE: See Drawings Sheet No. a to o4 za o o n o _ o z D- o al E an ox ca L oU Photo #1 Photo #2 Photo #3 Photo #4 Photo #5 4/1/2021 IPaC: Explore Location resources IPaC IPaC resource list U.S. Fish & Wildlife Service This report is an automatically generated list of species and other resources such as critical habitat (collectively referred to as trust resources) under the U.S. Fish and Wildlife Service's (USFWS) jurisdiction that are known or expected to be on or near the project area referenced below. The list may also include trust resources that occur outside of the project area, but that could potentially be directly or indirectly affected by activities in the project area. However, determining the likelihood and extent of effects a project may have on trust resources typically requires gathering additional site -specific (e.g., vegetation/species surveys) and project -specific (e.g., magnitude and timing of proposed activities) information. Below is a summary of the project information you provided and contact information for the USFWS office(s) with jurisdiction in the defined project area. Please read the introduction to each section that follows (Endangered Species, Migratory Birds, USFWS Facilities, and NWI Wetlands) for additional information applicable to the trust resources addressed in that section. Location Johnston County, North Carolina a rer \Iwo https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDUNEWEZYTAFMT741/resources 1/14 4/1/2021 IPaC: Explore Location resources Local office Raleigh Ecological Services Field Office t. (919) 856-4520 fi (919) 856-4556 MAILING ADDRESS Post Office Box 33726 Raleigh, NC 27636-3726 PHYSICAL ADDRESS 551 Pylon Drive, Suite F Raleigh, NC 27606-1487 °lc 1111A.0 https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDUNEWEZYTAFMT741/resources 2/14 4/1/2021 IPaC: Explore Location resources Endangered species This resource list is for informational purposes only and does not constitute an analysis of project level impacts. The primary information used to generate this list is the known or expected range of each species. Additional areas of influence (AOI) for species are also considered. An AOI includes areas outside of the species range if the species could be indirectly affected by activities in that area (e.g., placing a dam upstream of a fish population even if that fish does not occur at the dam site, may indirectly impact the species by reducing or eliminating water flow downstream). Because species can move, and site conditions can change, the species on this list are not guaranteed to be found on or near the project area. To fully determine any potential effects to species, additional site -specific and project -specific information is often required.. Section 7 of the Endangered Species Act requires Federal agencies to "request of the Secretary information whether any species which is listed or proposed to be listed may be present in the area of such proposed action" for any project that is conducted, permitted, funded, or licensed by any Federal agency. A letter from the local office and a species list which fulfills this requirement can only be obtained by requesting an official species list from either the Regulatory Review section in IPaC (see directions below) or from the local field office directly. For project evaluations that require USFWS concurrence/review, please return to the IPaC website and request an official species list by doing the following: 1. Draw the project location and click CONTINUE. 2. Click DEFINE PROJECT. 3. Log in (if directed to do so). 4. Provide a name and description for your project. 5. Click REQUEST SPECIES LIST. Listed species and their critical habitats are managed by the Ecological Services Program of the U.S. Fish and Wildlife Service (USFWS) and the fisheries division of the National Oceanic and Atmospheric Administration (NOAA Fisheries). Species and critical habitats under the sole responsibility of NOAA Fisheries are not shown on this list. Please contact NOAA Fisheries for species under their jurisdiction. https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDUNEWEZYTAFMT741/resources 3/14 4/1/2021 IPaC: Explore Location resources 1. Species listed under the Endangered Species Act are threatened or endangered; IPaC also shows species that are candidates, or proposed, for listing. See the listing status page for more information. IPaC only shows species that are regulated by USFWS (see FAQ). 2. NOAA Fisheries, also known as the National Marine Fisheries Service (NMFS), is an office of the National Oceanic and Atmospheric Administration within the Department of Commerce. The following species are potentially affected by activities in this location: Birds NAME STATUS Red -cockaded Woodpecker Picoides borealis Wherever found No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/7614 Endangered Amphibians NAME 1111111kTIIIATIIU11511 Neuse River Waterdog Necturus lewisi Proposed Threatened Wherever found � There is proposed critical habitat for this species. The location of the critical habitat is not available. https://ecos.fws.gov/ecp/species/6772 \ 4 --- Fishes NAME Carolina Madtom Noturus furiosus Wherever found 10' There is proposed critical habitat for this species. The location of the critical habitat is not available. https://ecos.fws.go4ecp/species/528 STATUS Proposed Endangered https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDUNEWEZYTAFMT741/resources 4/14 4/1/2021 IPaC: Explore Location resources Clams NAME STATUS Atlantic Pigtoe Fusconaia masoni Wherever found There is proposed critical habitat for this species. The location of the critical habitat is not available. https://ecos.fws.gov/ecp/species/5164 Dwarf Wedgemussel Alasmidonta heterodon Wherever found No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/784 Critical habitats Proposed Threatened Endangered ti% Potential effects to critical habitat(s) in this location must be analyzed along with the endangered species themselves. THERE ARE NO CRITICAL HABITATS AT THIS LOCATION. Migratory birds 1.110‘11111. �� o\ Certain birds are protected under the Migratory Bird Treaty Act' and the Bald and Golden Eagle Protection Act . Any person or organization who plans or conducts activities that may result in impacts to migratory birds, eagles, and their habitats should follow appropriate regulations and consider implementing appropriate conservation measures, as described below. li 1. The Migratory Birds Trea Act of 1918. 2. The Bald and Golden Eagle Protection Act of 1940. glh https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDUNEWEZYTAFMT741/resources 5/14 4/1/2021 IPaC: Explore Location resources Additional information can be found using the following links: • Birds of Conservation Concern http://www.fws.gov/birds/management/managed-species/ birds-of-conservation-concern.php • Measures for avoiding and minimizing impacts to birds http://www.fws.gov/birds/management/project-assessment-tools- and-guidance/ conservation-measures.php • Nationwide conservation measures for birds http://www.fws.gov/migratorybirds/pdf/management/nationwidestandardconservationmeasures.pdf The birds listed below are birds of particular concern either because they occur on the USFWS Birds of Conservation Conlrn (BCC) list or warrant special attention in your project location. To learn more about the levels of concern for birds onlbur IT t and how this list is generated, see the FAQ below. This is not a list of every bird you may find in this location, nor a guarantee that every bird on this list will be found in your project area. To see exact locations of where birders and the general public have sighted birds in and around your project area, visit the E-bird data mapping tool (Tip: enter your location, desired date range and a species on your list). For projects that occur off the Atlantic Coast, additional maps and models detailing the relative occurrence and abundance of bird species on your list are available. Links to additional information about Atlantic Coast birds, and other important information about your migratory bird list, including how to properly interpret and use your migratory bird report, can be found below. For guidance on when to schedule activities or implement avoidance and minimization measures to reduce impacts to migratory birds on your list, click on the PROBABILITY OF PRESENCE SUMMARY at the top of your list to see when these birds are most likely to be present and breeding in your project area. ()U\ NAME *ciff BREEDING SEASON (IF A BREEDING SEASON IS INDICATED FOR A BIRD ON YOUR LIST, THE BIRD MAY BREED IN YOUR PROJECT AREA SOMETIME WITHIN THE TIMEFRAME SPECIFIED, WHICH IS A VERY LIBERAL ESTIMATE OF THE DATES INSIDE WHICH THE BIRD BREEDS ACROSS ITS ENTIRE RANGE. "BREEDS ELSEWHERE" INDICATES THAT THE BIRD DOES NOT LIKELY BREED IN YOUR PROJECT AREA.) https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDUNEWEZYTAFMT741/resources 6/14 4/1/2021 IPaC: Explore Location resources Bald Eagle Haliaeetus leucocephalus This is not a Bird of Conservation Concern (BCC) in this area, but warrants attention because of the Eagle Act or for potential susceptibilities in offshore areas from certain types of development or activities. https://ecos.fws.gov/ecp/species/1626 Prothonotary Warbler Protonotaria citrea This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. Red-headed Woodpecker Melanerpes erythrocephalus This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. Rusty Blackbird Euphagus carolinus This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. and Alaska. Wood Thrush Hylocichla mustelina This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska. juikkA Probability of Presence Summary Breeds Sep 1 to Jul 31 Breeds Apr 1 to Jul 31 Breeds May 10 to Sep 10 10, 4til.. \01 Breeds elsewhere r ' 0 \- Breeds May 10 to Aug 31 The graphs below provide our best understanding of when birds of concern are most likely to be present in your project area. This information can be used to tailor and schedule your project activities to avoid or minimize impacts to birds. Please make sure you read and understand the FAQ "Proper Interpretation and Use of Your Migratory Bird Report" before using or attempting to interpret this report. Probability of Presence ( ) Each green bar represents the bird's relative probability of presence in the 10km grid cell(s) your project overlaps during a particular week of the year. (A year is represented as 12 4-week months.) A taller bar indicates a higher probability of species presence. The survey effort (see below) can be used to establish a level of confidence in the presence score. One can have https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDU N EWEZYTAFMT741/resources 7/14 4/1/2021 IPaC: Explore Location resources higher confidence in the presence score if the corresponding survey effort is also high. How is the probability of presence score calculated? The calculation is done in three steps: 1. The probability of presence for each week is calculated as the number of survey events in the week where the species was detected divided by the total number of survey events for that week. For example, if in week 12 there were 20 survey events and the Spotted Towhee was found in 5 of them, the probability of presence of the Spotted Towhee in week 12 is 0.25. 2. To properly present the pattern of presence across the year, the relative probability of presence is calculated. This is the probability of presence divided by the maximum probability of presence across all weeks. For example, imagine the probability of presence in week 20 for the Spotted Towhee is 0.05, and that the probability of presence at week 12 (0.25) is the maximum of any week of the year. The relative probability of presence on week 12 is 0.25/0.25 = 1; at week 20 it is 0.05/0.25 = 0.2. 3. The relative probability of presence calculated in the previous step undergoes a statistical conversion so that all possible values fall between 0 and 10, inclusive. This is the probability of presence score. To see a bar's probability of presence score, simply hover your mouse cursor over the bar. Breeding Season () Yellow bars denote a very liberal estimate of the time -frame inside which the bird breeds across its entire range. If there are no yellow bars shown for a bird, it does not breed in your project area. Survey Effort (I) Vertical black lines superimposed on probability of presence bars indicate the number of surveys performed for that species in the 10km grid cell(s) your project area overlaps. The number of surveys is expressed as a range, for example, 33 to 64 surveys. ) To see a bar's survey effort range, simply hover your mouse cursor over the bar. No Data ( ) A week is marked as having no data if there were no survey events for that week. Survey Timeframe Surveys from only the last 10 years are used in order to ensure delivery of currently relevant information. The exception to this is areas off the Atlantic coast, where bird returns are based on all years of available data, since data in these areas is currently much more sparse. https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDUNEWEZYTAFMT741/resources 8/14 4/1 /2021 SPECIES Bald Eagle Non -BCC Vulnerable (This is not a Bird of Conservation Concern (BCC) in this area, but warrants attention because of the Eagle Act or for potential susceptibilities in offshore areas from certain types of development or activities.) IPaC: Explore Location resources probability of presence breeding season I survey effort — no data JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC m 1111 1111 1111 1111 -111 1111 1111 1111 1111 1111 Prothonotary Warbler BCC Rangewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska.) Red-headed Woodpecker BCC Rangewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska.) Rusty Blackbird BCC Rangewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continenta USA and Alaska.) 1111 1111 1111 IIII '-III s4" 00; https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDU N EWEZYTAFMT741/resources 9/14 4/1/2021 IPaC: Explore Location resources BCC gewide (CON) (This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA and Alaska.) ---- in 1111 Li ---- Tell me more about conservation measures I can implement to avoid or minimize impacts to migratory birds. Nationwide Conservation Measures describes measures that can help avoid and minimize impacts to all birds at any location year round. Implementation of these measures is particularly important when birds are most likely to occur in the project area. When birds may be breeding in the area, identifying the locations of any active nests and avoiding their destruction is a very helpful impact minimization measure. To see when birds are most likely to occur and be breeding in your project area, view the Probability of Presence Summary. Additional measures or permits may be advisable depending on the type of activity you are conducting and the type of infrastructure or bird species present on your project site. KAS \IN.1 � What does IPaC use to generate the migratory birds potentially occurring in my specified location? The Migratory Bird Resource List is comprised of USFWS Birds of Conservation Concern (BCC), and other species that may warrant special attention in your project location. The migratory bird list generated for your project is derived from data provided by the Avian Knowledge Network (AKN). The AKN data is based on a growing collection of survey, banding, and citizen science datasets and is queried and filtered to return a list of those birds reported as occurring in the 10km grid cell(s) which your project intersects, and that have been identified as warranting special attention because they are a BCC species in that area, an eagle (Eagle Act requirements may apply), or a species that has a particular vulnerability to offshore activities or development. Again, the Migratory Bird Resource list includes only a subset of birds that may occur in your project area. It is not representative of all birds that may occur in your project area. To get a list of all birds potentially present in your project area, please visit the AKN Phenology Tool. What does IPaC use to generate the probability of presence graphs for the migratory birds potentially occurring in my specified location? The probability of presence graphs associated with your migratory bird list are based on data provided by the Avian Knowledge Network (AKN). This data is derived from a growing collection of survey, banding, and citizen science datasets . Probability of presence data is continuously being updated as new and better information becomes available. To learn more about how the probability of presence graphs are produced and how to interpret them, go the Probability of Presence Summary and then click on the "Tell me about these graphs" link. NAL II https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDUNEWEZYTAFMT741/resources 10/14 4/1/2021 IPaC: Explore Location resources How do I know if a bird is breeding, wintering, migrating or present year-round in my project area? To see what part of a particular bird's range your project area falls within (i.e. breeding, wintering, migrating or year-round), you may refer to the following resources: The Cornell Lab of Ornithology All About Birds Bird Guide, or (if you are unsuccessful in locating the bird of interest there), the Cornell Lab of Ornithology Neotropical Birds guide. If a bird on your migratory bird species list has a breeding season associated with it, if that bird does occur in your project area, there may be nests present at some point within the timeframe specified. If "Breeds elsewhere" is indicated, then the bird likely does not breed in your project area. What are the levels of concern for migratory birds? Migratory birds delivered through IPaC fall into the following distinct categories of concern: 1. "BCC Rangewide" birds are Birds of Conservation Concern (BCC) that are of concern throughout their range anywhere within the USA (including Hawaii, the Pacific Islands, Puerto Rico, and the Virgin Islands); 2. "BCC - BCR" birds are BCCs that are of concern only in particular Bird Conservation Regions (BCRs) in the continental USA; and ' 3. "Non -BCC - Vulnerable" birds are not BCC species in your project area, but appear on your list either because of the Eagle Act requirements (for eagles) or (for non -eagles) potential susceptibilities in offshore areas from certain types of development or activities (e.g. offshore energy development or longline fishing). Although it is important to try to avoid and minimize impacts to all birds, efforts should be made, in particular, to avoid and minimize impacts to the birds on this list, especially eagles and BCC species of rangewide concern. For more information on conservation measures you can implement to help avoid and minimize migratory bird impacts and requirements for eagles, please see the FAQs for these topics. Details about birds that are potentially affected by offshore projects For additional details about the relative occurrence and abundance of both individual bird species and groups of bird species within your project area off the Atlantic Coast, please visit the Northeast Ocean Data Portal. The Portal also offers data and information about other taxa besides birds that may be helpful to you in your project review. Alternately, you may download the bird model results files underlying the portal maps through the NOAA NCCOS Integrative Statistical Modeling and Precctive Mapping of Marine Bird Distributions and Abundance on the Atlantic Outer Continental Shelf project webpage. Bird tracking data can also provide additional details about occurrence and habitat use throughout the year, including migration. Models relying on survey data may not include this information. For additional information on marine bird tracking data, see the Diving Bird Study and the nanotag studies or contact Caleb Spiegel or Pam Loring. What if I have eagles on my list? If your project has the potential to disturb or kill eagles, you may need to obtain a permit to avoid violating the Eagle Act should such impacts occur. rl https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDUNEWEZYTAFMT741/resources 11/14 4/1/2021 IPaC: Explore Location resources Proper Interpretation and Use of Your Migratory Bird Report The migratory bird list generated is not a list of all birds in your project area, only a subset of birds of priority concern. To learn more about how your list is generated, and see options for identifying what other birds may be in your project area, please see the FAQ "What does IPaC use to generate the migratory birds potentially occurring in my specified location". Please be aware this report provides the "probability of presence" of birds within the 10 km grid cell(s) that overlap your project; not your exact project footprint. On the graphs provided, please also look carefully at the survey effort (indicated by the black vertical bar) and for the existence of the "no data" indicator (a red horizontal bar). A high survey effort is the key component. If the survey effort is high, then the probability of presence score can be viewed as more dependable. In contrast, a low survey effort bar or no data bar means a lack of data and, therefore, a lack of certainty about presence of the species. This list is not perfect; it is simply a starting point for identifying what birds of concern have the potential to be in your project area, when they might be there, and if they might be breeding (which means nests might be present). The list helps you know what to look for to confirm presence, and helps guide you in knowing when to implement conservation measures to avoid or minimize potential impacts from your project activities, should presence be confirmed. To learn more about conservation measures, visit the FAQ "Tell me about conservation measures I can 0\41114 implement to avoid or minimize impacts to migratory birds" at the bottom of your migratory bird trust resources page. Facilities National Wildlife Refuge lands litothi._°°c1111111 411111(14 lir -um \I\ - Any activity proposed on lands managed by the National Wildlife Refuge system must undergo a 'Compatibility Determination' conducted by the Refuge. Please contact the individual Refuges to discuss any questions or concerns. THERE ARE NO REFUGE LANDS AT THIS LOCATION. Fish hatcheries THERE ARE NO FISH HATCHERIES AT THIS LOCATION. https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDUNEWEZYTAFMT741/resources 12/14 4/1/2021 IPaC: Explore Location resources Wetlands in the National Wetlands Inventory Impacts to NWI wetlands and other aquatic habitats may be subject to regulation under Section 404 of the Clean Water Act, or other State/Federal statutes. For more information please contact the Regulatory Program of the local U.S. Army Corps of Engineers District. WETLAND INFORMATION IS NOT AVAILABLE AT THIS TIME This can happen when the National Wetlands Inventory (NWI) map service is unavailable, or for very large projects that intersect many wetland areas. Try again, or visit the NWI map to view wetlands at this location. Data limitations The Service's objective of mapping wetlands and deepwater habitats is to produce reconnaissance level information on the location, type and size of these resources. The maps are prepared from the analysis of high altitude imagery. Wetlands are identified based on vegetation, visible hydrology and geography. A margin of error is inherent in the use of imagery; thus, detailed on -the -ground inspection of any particular site may result in revision of the wetland boundaries or classification established through image analysis. The accuracy of image interpretation depends on the quality of the imagery, the experience of the image analysts, the amount and quality of the collateral data and the amount of ground truth verification work conducted. Metadata should be consulted to determine the date of the source imagery used and any mapping problems. Wetlands or other mapped features may have changed since the date of the imagery or field work. There may be occasional differences in polygon boundaries or classifications between the information depicted on the map and the actual conditions on site. fi Data exclusions 1 Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and nearshore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. Data precautions C Federal, state, and local regulatory agencies with jurisdiction over wetlands may define and describe wetlands in a different manner than that used in this inventory. There is no attempt, in either the design or products of this inventory, to define the limits of proprietary jurisdiction of https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDUNEWEZYTAFMT741/resources 13/14 4/1/2021 IPaC: Explore Location resources any Federal, state, or local government or to establish the geographical scope of the regulatory programs of government agencies. Persons intending to engage in activities involving modifications within or adjacent to wetland areas should seek the advice of appropriate federal, state, or local agencies concerning specified agency regulatory programs and proprietary jurisdictions that may affect such activities. ,3\ifs 1..s\00\ cols 111.11A.011 https://ecos.fws.gov/ipac/location/3ZKH3H5XYBDUNEWEZYTAFMT741/resources 14/14 ■ ■... —BM'. NC DEPARTMENT OF ■ EI= NATURAL AN❑ CULTURAL RESOURCES ■.■■■ May 10, 2021 wyatt brown Brown's Environmental Group, inc 242 Batten Farm Road Selma, NC 27576 RE: Willowbrook Stream Repair Dear wyatt brown: Roy Cooper, Governor D. Reid Wilson, Secretary Walter Clark Director, Division of Land and Water Stewardship NCNHDE-14658 The North Carolina Natural Heritage Program (NCNHP) appreciates the opportunity to provide information about natural heritage resources for the project referenced above. Based on the project area mapped with your request, a query of the NCNHP database indicates that there are no records for rare species, important natural communities, natural areas, and/or conservation/managed areas within the proposed project boundary. Please note that although there may be no documentation of natural heritage elements within the project boundary, it does not imply or confirm their absence; the area may not have been surveyed. The results of this query should not be substituted for field surveys where suitable habitat exists. In the event that rare species are found within the project area, please contact the NCNHP so that we may update our records. The attached `Potential Occurrences' table summarizes rare species and natural communities that have been documented within a one -mile radius of the property boundary. The proximity of these records suggests that these natural heritage elements may potentially be present in the project area if suitable habitat exists. Tables of natural areas and conservation/managed areas within a one -mile radius of the project area, if any, are also included in this report. If a Federally -listed species is found within the project area or is indicated within a one -mile radius of the project area, the NCNHP recommends contacting the US Fish and Wildlife Service (USFWS) for guidance. Contact information for USFWS offices in North Carolina is found here: https://www.fws.gov/offices/Directory/ListOffices.cfm?statecode=37. Please note that natural heritage element data are maintained for the purposes of conservation planning, project review, and scientific research, and are not intended for use as the primary criteria for regulatory decisions. Information provided by the NCNHP database may not be published without prior written notification to the NCNHP, and the NCNHP must be credited as an information source in these publications. Maps of NCNHP data may not be redistributed without permission. The NC Natural Heritage Program may follow this letter with additional correspondence if a Dedicated Nature Preserve, Registered Heritage Area, Land and Water Fund easement, or Federally - listed species are documented near the project area. If you have questions regarding the information provided in this letter or need additional assistance, please contact Rodney A. Butler at rodney.butler@ncdcr.gov or 919-707-8603. Sincerely, NC Natural Heritage Program DEPARTMENT OF NATURAL AND CULTURAL RESOVRCES Q 121 W. JONES STREET. RALEIGH. NC 27603 • 16S1 MAIL SERVICE CENTER. RALEIGH. NC 27699 OFC 'M9.707.9120 • FAX 919.707.9121 Natural Heritage Element Occurrences, Natural Areas, and Managed Areas Within a One -mile Radius of the Project Area Willowbrook Stream Repair May 10, 2021 NCNHDE-14658 Element Occurrences Documented Within a One -mile Radius of the Project Area Taxonomic Group EO ID Scientific Name Common Name Last Element servation Occurrence Date IM Rank Dragonfly or 32043 Coryphaeschna ingens Regal Darner Damselfly Dragonfly or 33753 Somatochlora Coppery Emerald Damselfly georgiana Freshwater Fish5501 Lampetra aepyptera Least Brook Lamprey 2004-Pre 2004-Pre 2018-02-25 No Natural Areas are Documented Within a One -mile Radius of the Project Area Accuracy Federal Status H? 5-Very Low H? 5-Very Low E 3-Medium Managed Areas Documented Within a One -mile Radius of the Project Area Managed Area NarWhliill Owner Type Central Crops Research Station NC Department of Agriculture, Research State Stations Division Clemmons Educational State Forest NC Department of Agriculture, Forest Service Clemmons Educational State Forest Dedicated Nature Preserve NC Land and Water Fund Project NC Department of Agriculture, Forest Service NC DNCR, NC Land and Water Fund State State State State Global State tatus Rank Rank Significantly Rare Significantly Rare Threatened G5 G3G4 G5 S2? S1? S2 Definitions and an explanation of status designations and codes can be found at https://ncnhde.natureserve.ora/help. Data query generated on May 10, 2021; source: NCNHP, Q1 April 2021. Please resubmit your information request if more than one year elapses before project initiation as new information is continually added to the NCNHP database. Page 2 of 3 NCNHDE-14658: Willowbrook Stream Repair '9ij nr s rc P, Louise-5 a ; 4iWt(ee _ sG ciP 15U`N / Pine Follow G61F Club \'• ' N ' , \\ - \\..\\\ \ iiir: oa 0W • / O P / C / / WR QU i �alw'1t� Gnarl Ur d_ m � � g' o i Jr. Fe,c9 May 10, 2021 O O Project Boundary Buffered Project Boundary Managed Area (MAREA) 1:20,863 0 0.175 0.35 0 0.275 0.55 0.7 mi J 1.1 km Sources' Esri, HERE, Garmin,, Intermap, increment P Corp_, GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), (c) OpenStreetMep contributors, and the GIS User Community Page 3 of 3 Eff411f C# Plow Irtirkiw f! Club tr 8 F 1 Loch Lomond Dr a Town of Cary, Johnston County, State of North Carolina DOT, Esri, HERE, Garmin, INCREMENT P, Intermap, NGA, USGS