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HomeMy WebLinkAbout20201240 Ver 1_401 Application_20201110LR -.,, 'Stvisim of Vh*w �u�0 M Pre -Construction Notification (PCN) Form October 26, 2020 Ver 3.3 Initial Review Has this project met the requirements for acceptance in to the review process?* d Yes 4 No Is this project a public transportation project?* 0Yes 4No Change only if needed. BIM # Assigned * Version#* 20201240 1 Is a payment required for this project?* d No payment required What amout is owed?* d Fee received O $240.00 d Fee needed - send electronic notification 4 $570.00 Reviewing Office* Select Project Reviewer* Asheville Regional Office - (828) 296-4500 Andrew Moore:eads\awmoore3 Information for Initial Review 1a. Name of project: Big Lost Cove Creek Bank Stabilization 1a. Who is the Primary Contact?* Andrew Bick 1b. Primary Contact Email:* and rew@h eadwaters-eng. oom Date Submitted 11/10/2020 Nearest Body of Water Big Lost Cove Creek Basin French Broad Water Classification C; Tr; ORW Site Coordinates Latitude: 35.748463 Pre -Filing Meeting Information ID# 20201240 Pre -fling Meeting or Request Date 10/27/2020 Longitude: -82.213533 Attach documentation of Pre -Filing Meeting Request here:* 20201240 Ver 1_PreFiling Meeting Not Required Emaii_20201023.pdf A. Processing Information County (or Counties) where the project is located: Yancey 1c. Primary Contact Phone:* (828)606-0306 Version 1 371.6IB Is this a NCDMS Project 4 Yes d No Is this project a public transportation project?* 0Yes 0No la. Type(s) of approval sought from the Corps: ® Section 404 Permit (wetlands, streams and waters, Clean Water Act) ❑ Section 10 Permit (navigable waters, tidal voters, Rivers and Harbors Act) Has this PCN previously been submitted?* O Yes O 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 bythe Corps? 0Yes ONo Nationwide Permit (NWP) Number: 13 - Bank Stabilization NWP Numbers (for multiple NWPS): 1d. Type(s) of approval sought from the DWR: ® 401 Water Quality Certification - Regular ❑ Non-404 Jurisdictional General Permit ❑ Individual Permit 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: ❑ 401 Water Quality Certification - Express ❑ Riparian Buffer Authorization 1f. Is this an after -the -fact permit application?* 4 Yes d No 1g. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts? 0 Yes 4 No 1g. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts? 4 Yes A No Acceptance Letter Attachment 1 h. Is the project located in any of NC's twenty coastal counties? O Yes 4 No 1j. Is the project located in a designated trout watershed? d Yes O No O Yes O No 4 Yes O No B. Applicant Information C") 1d. Who is applying for the permit? ❑ Owner ® Applicant (other than owner) 1a. Is there an Agent/Consultant for this project?* d Yes d No 2. Owner Information 2a. Name(s) on recorded deed: Candle Smith (recent purchase from J. Lee Lehman and Margaret Meister) 2b. Deed book and page no.: 521; 27 2c. Responsible party: 2d. Address Street Address 604 Castleman Ct Address Line 2 aty Keller Postal / Zip Code 76248 2e. Telephone Number: (817)881-7701 2g. Email Address:* candieselishorries@gmaii.com 3. Applicant Information (if different from owner) 3a. Name: Candie Smith 3b. Business Name: 3c.Address Street Address 604 Castleman Ct Address Line 2 CKY Keller Postal / Zip Code 76248 3d. Telephone Number: (817)881-7701 3f. Email Address:* candieselishorries@gmaii.com 4. Agent/Consultant (if applicable) 4a. Name: Andrew Bick (agent) 4b. Business Name: Headwaters Engineering 4c.Address Street Address 45 Lotus Place Address Une 2 ay Asheville Postal / Zip Aide 28804 4d. Telephone Number: (828)606-0306 M. Email Address:* and rew@h eadwaters-eng. com Agent Authorization Letter* Agent Auth Form Smith 2.pdf Sate / Rovince / Plegion TX 0-Y USA 2f. Fax Number: Sate / Rmince / I3gim TX Oxntry USA 3e. Fax Number: Sate / Roarm / Pagion NC 0-" USA 4e. Fax Number: 169.62KB C. Project Information and Prior Project History 40 1. Project Information 1b. Subdivision name: (if appruixiate) 1c. Nearest municipality/town: Celo 2. Project Identification 2a. Property Identification Number: 074400637036000 2b. Property size: 0.66 2c. Project Address Street Address 2026 South Toe River Road Address Line 2 aty Burnsville Rbstal / Zip (bde 28714 3. Surface Waters 3a. Name of the nearest body of water to proposed project:* Big Lost Cove Creek 3b. Water Resources Classification of nearest receiving water:* C; Tr; ORW 3c. What river basin(s) is your project located in?* French Broad 3d. Please provide the 12-digit HUC in which the project is located. 060101080201 4. Project Description and History State / Province / Fbgion NC Canny USA 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 proposed bank stabilization site is located on the right bank of Big Lost Cove Creek. A cabin was constructed along the right bank of the creek and recent bank erosion has caused the bank to retreat to within a few feet of the cabin. Big Lost Cove Creek drains a steep and primarily forested 2.1-square mile watershed upstream of the site. The project reach flows adjacent to several small cabins in a wooded setting. 4b. Have Corps permits or DWR certifications been obtained for this project (including all prior phases) in the past?* d Yes 0 No 4 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) NC_Old_Fort_20190816_TM.pdf 252.58KB 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) 20201109_16450104323_29_Soil_Map.pdf 915.45KB 4f. List the total estimated acreage of all existing wetlands on the property: 0 4g. List the total estimated linear feet of all existing streams on the property: 272 4h. Explain the purpose of the proposed project:* The purpose of the project is to stabilize the eroding stream bank, thereby protecting the cabin and property as whole as well as reducing fine sediment input to Big Lost Cove Creek and the South Toe River. 41. Describe the overall project in detail, including indirect impacts and the type of equipment to be used:* The project will involve stabiliang the right bank of the creek using reinforced soil lifts and a boulder vane. Work will be performed primarily from the top of bank, and will begin with removal of three stumps and the remains of log cribbing. Construction equipment to be used will include a small excavator and dump truck as well as hand tools. On -site cobbles will be used to create a coffer dam to divert base flow around the work area. The base flow is too large to effectively pump around the work area. The reinforced soil lifts will be constructed over a stone foundation and will include imported soil, dormant native shrub cuttings and coir logs and matting. The boulder vane will likely be installed before the soil lifts, with the lifts constructed around the vane tie-in to the bank. Any upland areas disturbed during construction will be stabilized with temporary and permanent seed and mulch. 4j. Please upload project drawings for the proposed project. big lost cove stabilization prelim plans 091720.pdf 5. Jurisdictional Determinations 5a. Have the wetlands or streams been delineated on the property or proposed impact areas?* 4 Yes U No Comments: 5b. If the Corps made ajurisdictional determination, what type of determination was made?* 4 Preliminary A Approved 4 Not Verified d Unknown C NIA Corps AID Number: 1.69MB 4 Unknown 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 6a. Is this a phased project?* 6 Yes O 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 projector related activity? D. Proposed Impacts Inventory u 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 3a. Reason for impact (?) 3b.lmpact type * 3c. Type of impact* 3d. S. name* 3e. Stream Type * �3f. Type of 3g. S. width * 3h. Impact (?) Jurisdiction* length* Bank Stabilization Permanent Bank Stabilization Big Lost Cove Creek=P��Both I[;;;] L(I-1--L S1 9 —] 31. Total jurisdictional ditch impact in square feet: 0 31. Total permanent stream impacts: 31. Total temporary stream impacts: 70 0 31. Total stream and ditch impacts: 70 3j. Comments: The plans show 60 LF of bioengineering, but we are requesting 70 LF in case the length of needed stabilization changes once construction begins. E. Impact Justification and Mitigation U' 1. Avoidance and Minimization 1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing the project: The proposed bioengineering bank treatment will stabilize the eroding bank using natural materials that will develop into a well -vegetated bank with improved aquatic and terrestrial habitat value similar to undisturbed banks nearby. The boulder vane will direct flow to the center of the channel and help create and maintain a scour pool, which will improve bedform diversity in the project reach. 1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques: Work will be staged such that all equipment and materials needed for the project will be brought to the site before work begins. Equipment will operate from the top of bank as much as possible. Disturbed bank areas vdll be stabilized vdth mulch and/or matting before the end of each workday. Fueling will be performed at least 100 feet from the stream. 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? 6 Yes O No 2b. If this project DOES NOT require Compensatory Mitigation, explain why: The impacts are intended to protect land and voter quality. 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? 4 Yes d No If no, explain why: The site is not located in one of the buffer protection watersheds. 2. Stormwater Management Plan 2a. Is this a NCDOT project subject to compliance with NCDOTs Individual NPDES permit NCS000250?* r Yes r No 2b. Does this project meet the requirements for low density projects as defined in 15A NCAC 02H .1003(2)? r Yes r 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? r Yes r No r WA- project disturbs < 1 acre Comments: G. Supplementary Information U 1. Environmental Documentation 1a. Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land?* r Yes r No 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)? * r Yes M No 3. Cumulative Impacts (DWR Requirement) 3a. Will this project result in additional development, which could impact nearby downstream water quality?* r Yes r No 3b. If you answered "no," provide a short narrative description. This will be a standalone project. 4. Sewage Disposal (DWR Requirement) 4a. Is sewage disposal required by DWR for this project? 0Yes 0No0 WA 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?* r Yes r No 5b. Have you checked with the USFWS concerning Endangered Species Act impacts?* r Yes r No 5d. Is another Federal agency involved?* r Yes r No r Unknown 5e. Is this a DOT project located within Division's 1-8? rYes r No 5f. Will you cut any trees in order to conduct the work in waters of the U.S.? rYes r No 5g. Does this project involve bridge maintenance or removal? 0Yes 0No 5h. Does this project involve the construction/installation of a wind turbine(s)?* r Yes r No 51. 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.? r Yes r No 5j. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat? Search of US FWS database. Consultation Documentation Upload 6. Essential Fish Habitat (Corps Requirement) 6a. Will this project occur in or near an area designated as an Essential Fish Habitat?* CS Yes d No 6b. What data sources did you use to determine whether your site would impact an Essential Fish Habitat?* The project site is not located near a marine ecosystem. 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?* 4 Yes O No 7b. What data sources did you use to determine whether your site would impact historic or archeological resources?* search of HPOWEB 2.0 online GIS application 7c. Historic or Prehistoric Information Upload 8. Flood Zone Designation (Corps Requirement) 8a. Will this project occur in a FEMA designated 100-year floodplain?* 0 Yes d No 8c. What source(s) did you use to make the floodplain determination?* NC FRIS website and the FIRM shows the site upstream of the FEMA study limit. Miscellaneous Comments Photos of the site are attached. Miscellaneous attachments not previously requested. PHOTOS.pdf 638.45KB Signature U ® 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 CWA401 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: Andrew Bick Signature Date 11/10/2020 DocuSign Envelope ID: CE615DD9-ED36-47A1-8D19-3COE4D7DDFC1 Department of the Army Wilmington District, Corps of Engineers Attn: Brandee Boggs 151 Patton Avenue #208 Asheville, NC 28801 -and- NC DWR, 401 and Buffer Permitting Unit Attn: Paul Wojoski 512 North Salisbury Street Raleigh, North Carolina 27604 I, the current landowner/managing partner of the property identified below, hereby authorize Andrew Bick of Headwaters Engineering, PC to act on my behalf as my agent during the processing of jurisdictional determination requests and permits to impact Wetlands and Water of the US subject to Federal jurisdiction under Section 404 of the Clean Water Act and/or Section 10 of the Rivers and Harbors Act of 1899. Andrew Bick is authorized to provide supplemental information as needed at the request of the USACE or DWR. Additionally, I authorize representatives of the Wilmington District, US Army Corps of Engineers to enter upon the property herein described for the purposes of conducting onsite investigations and issuing a determination associated with Wetlands and Waters of the US subject to Federal jurisdiction under Section 404 of the Clean Water Act and/or Section 10 of the Rivers and Harbors Act of 1899. One property owner of record must accompany any said representative when the onsite investigation is conducted. Property Owner of Record: Candie Smith Property Owner Address: 604 Castleman Ct, Keller, TX 76248 Phone Number: 817.881.7701 Email address: candiesellshomesggmail.com Property Location: Owner/Managing par Owner/Managing printed name: Candie Smith Date: 11/10/2020 OLD FORT IVAMMUE MUSGS US Topo ISITE a i r Si Y, Y, VALE 1;24 QW OLD FM NC nil 390060 35o 45' T N 0 n 1 35o 44' 42" N 390060 390150 390240 390330 390420 Map Scale: 1:3,770 if printed on A portrait (8.5" x 11") sheet. Meters N 0 50 100 200 300 Feet 0 150 300 600 900 Map projection: Web Mercator Conermordinates: WGS84 Edge tics: lfrM Zone 17N WGS84 USDA Natural Resources Web Soil Survey Conservation Service National Cooperative Soil Survey Soil Map —Yancey County, North Carolina (2026 South Toe River Road) 390150 390240 390330 390420 390510 390510 390600 35o 45' T N 0 n 1 35o 44' 42" N 390600 En 11 /9/2020 Pagel of 3 MAP LEGEND Area of Interest (AOI) 0 Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot 0 Landfill A. Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip o Sodic Spot Soil Map —Yancey County, North Carolina (2026 South Toe River Road) MAP INFORMATION Spoil Area The soil surveys that comprise your AOI were mapped at 1:12,000. Stony Spot th Very Stony Spot Warning: Soil Map may not be valid at this scale. Wet Spot Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil 4� Other line placement. The maps do not show the small areas of Special Line Features contrasting soils that could have been shown at a more detailed scale. Water Features Streams and Canals Please rely on the bar scale on each map sheet for map measurements. Transportation — Rails Source of Map: Natural Resources Conservation Service Web Soil Survey URL: . 0 Interstate Highways Coordinate System: Web Mercator (EPSG:3857) US Routes Maps from the Web Soil Survey are based on the Web Mercator Major Roads projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Local Roads Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. Background Aerial Photography This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Yancey County, North Carolina Survey Area Data: Version 18, Jun 3, 2020 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: May 3, 2020—May 7, 2020 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. USDA Natural Resources Web Soil Survey 11/9/2020 Conservation Service National Cooperative Soil Survey Page 2 of 3 Soil Map —Yancey County, North Carolina 2026 South Toe River Road Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI CeE Chandler-Micaville complex, 9.3 15.6% 30 to 50 percent slopes, sto ny DeA Dellwood-Reddies complex, 0 32.4 54.4% to 3 percent slopes, occasionally flooded TuC Toecane-Tusquitee complex, 8 1.1 1.9% to 15 percent slopes, bouldery TwD Toecane-Tusquitee complex, 15.3 25.8% 15 to 30 percent slopes, very bouldery W Water 1.4 2.3% Totals for Area of Interest 69.6 100.0% USDA Natural Resources Web Soil Survey 11/9/2020 Conservation Service National Cooperative Soil Survey Page 3 of 3 CONSTRUCTION PLANS BANK STABILIZATION AT 2026 SOUTH TOE RIVER ROAD BIG LOST COVE CREEK YANCEY COUNTY, NORTH CAROLINA LIST OF SHEETS 1. TITLE AND NOTES 2. PLAN 3. GEOLIFT DETAILS 4. SEEDING AND VANE DE' PRELIMINARY PLANS NOT FOR CONSTRUCTION l Lu U) z 0 i= > a w Ofr U y U) W 0 COO U=con CNI 0 tN E Lo 0 w z am �00 Q w Z 1 Lu S h4 eon Qz J PROJECT SITE a, k �l a z — �� w w N m 1205 ,HARD GENERAL NOTES: 1. EXISTING 1-FOOT CONTOURS DEVELOPED FROM 2016/17 BARE EARTH LiDAR DATA OBTAINED FROM NC ONEMAP. DATUM IS NAD 83. 2. EROSION AND SEDIMENT CONTROL PRACTICES MUST BE INSTALLED, INSPECTED AND MAINTAINED IN ACCORDANCE WITH FEDERAL, STATE AND LOCAL REGULATIONS. 3. ALL EQUIPMENT MUST BE CLEANED REGULARLYAND MAINTAINED TO BE FREE OF FUEL, OILAND LUBRICANT LEAKS. 4. FUELING SHALL BE PERFORMED AT LEAST 100 FEET FROM FLOWING WATER. 5. THE CONTRACTOR SHALL PROTECT SITE FEATURES, INCLUDING A SEPTIC SYSTEM, BEYOND THE GRADING LIMITS. CONTRACTOR SHALL REPAIR ANY DAMAGE TO SITE FEATURES TO PRE -PROJECT CONDITIONS. 6. A COFFER DAM USING ON -SITE COBBLE SHALL BE USED TO DIVERT FLOW AROUND IN -STREAM WORKAREAS. 7. WORK SHALL BE STAGED SUCH THAT NO MORE STREAM BANK IS DISTURBED THAN CAN BE STABILIZED WITH SEED, MULCH AND MATTING AT THE END OF EACH WORKDAY 8. DISTURBED UPLAND AREAS MUST BE STABILIZED WITH SEED AND MULCH WITHIN 7 DAYS OF REACHING FINAL GRADES. 9. SILT FENCE SHALL BE INSTALLED ON THE STREAM SIDE OF ANY STOCKPILES. 10. LIVE STAKES SHALL BE INSTALLED DURING THE DORMANT SEASON, GENERALLY DECEMBER THROUGH MARCH. a O z W 0 U O w r Z 0�w aC)>� N w Fy Z J>u.1� �000 �Uw Z OJ � Z mc�°a N O N DATE: SEPT.2020 SCALE: AS SHOWN TITLE w CONSTRUCTION EQUIPMENT z ACCESS, LIMIT CLEARING TO Z O SMALL TREES AND SHRUBS; z— o PROTECT MATURE TREES > 2 W U � 1 w A Q m U U=� -=Q • ,wN ,0 o a o wz / o Q � �' z _U • z J ❑0 U) ' w m ww z REMOVE THREE STUMPS AND REMAINS OF LOG CRIBBING INSTALL BOULDER VANE a Y 0 ZW[If CU 11 O W [)f Z N[if W U > H _WEZ REMOVE LEANING BUCKEYE J > D W <000 co(�w z��z < U) < co m(} o cV DATE: SEPT.2020 PRELIMINARY PLANS 1 SCALE: AS SHOWN NOT FOR CONSTRUCTION PLAN J _ , SHEET 2 OF 4 PRELIMINARY PLANS a_ Q NOT FOR CONSTRUCTION w Q Cf) 0 z o O APPROX. CREEKSIDE a_ LIJ WALL OF CABIN w 0 m 0 Q 780 G/M' COIR MATTING 12 DIAM. COIR LOG (TYP) : '; �, = a=u Z=Q C�N =o - -- DORMANT SHRUB CUTTINGS (TYP) EXISTING GROUND; � "V" """ ' HEADWATERS ENG. SURVEY 9/8/20 NO WORK LEFT BANK y o 1.5 �.. 1 o o � �z 0) SAND/CLAYlTOPSOIL MIX WITH 5% ORGANICS MODERATELY . ° aW z �' �z BASE �,J �� — . COMPACTED IN 12 LIFTS; ON -SITE 0 U) COBBLE CAN BE USED BEHIND FRONT 12" Lu w m co = - U 3 + - IMPORTED BOULDERS AND ON -SITE COBBLE z WITH LIMBS AND LOGS EXTENDING INTO WATER 1.5' MIN. BELOW BED p a O 0' 5' 10' 15' Z W 0 U Ow0�Z 1 GEOLIFT BANK STABILIZATION F (X w > NwEz 3 1"=5' J > W O O O NOTES: Q 1. REMOVE STUMPS AND DEBRIS FROM AREA TO RECEIVE GEOLIFTS. RE -USE WOOD DEBRIS IF SUITABLE FOR FOUNDATION; } DISPOSE OF UNSUITABLE DEBRIS OFF -SITE. U) U) W 2. REMOVE SLUMPED AND LOOSE SOIL AND OVEREXCAVATE FOR STONE FOUNDATION. Z 0 Z 3. PLACE ENTIRE LENGTH OF STONE FOUNDATION, FILLING VOIDS BETWEEN RIPRAP WITH ON -SITE GRAVELAND COBBLE. Q Q 4. ROLL COIR MATTING LENGTHWISE ALONG BANK, LEAVING 2' OF 6.5' ROLL WIDTH OVER STONE FOUNDATION AND EXTENDING FLAP 00 m cD } OF REMAINING COIR MATTING OVER THE SLOPE. N 5. PLACE COIR LOGS ON TOP OF COIR MATTING AND ANCHOR TO SUBGRADE WITH 12" MIN. WOODEN STAKES EVERY 3'. N 6. PLACE AND COMPACT 12" LIFT OF CLEAN SOIL OVER COIR AND AGAINST COIR LOG. DATE: SEPT 2020 7. APPLY TEMPORARY AND PERMANENT SEED MIX AND STRAW MULCH ON FLAT, EXPOSED PORTION OF THE LIFT. SCALE: AS SHOWN 8. WRAP REMAINDER OF COIR ROLL WIDTH UP AND OVER COIR LOG AND STAKE COIR MATTING WITH WOODEN STAKES EVERY 3'. 9. PLACE 2" LAYER OF TOPSOIL OVER FIRST LIFT AND INSTALL DORMANT CUTTINGS OF SILKY DOGWOOD, SILKY WILLOW, ELDERBERRY AND/OR NINEBARKAT 12" SPACING IN TOPSOIL. 10. REPEAT STEPS 4 THROUGH 9 TO REACH THE TOP OF BANK. DETAILS 4 SHEET 3 OF RIPARIAN SEED MIX Seeding Rate = 20 lb/acre Mulching: wheat or oat straw mulch applied at 2 tons/acre Common Name Scientific Name Percentage Indiangrass Sorghastrum nutans 20 Fowl Bluegrass Poa palustris 20 Virginia Wildrye Elymus virginicus 20 Soft Rush Juncus effusus 20 Beaked Panicgrass Panicum anceps 20 EXISTING BED TEMPORARY SEED MIX Rate (lb/acre) Rate (lb/acre) Applied Application Dates Common Name Scientific Name Applied w/ Riparian Mix Separately August 15 to May 1 Rye Grain Secale cereale 120 60 May 1 to August 15 Pearl Millet Pennisetum glaucum 40 20 1 SEEDING 4 NTS n w Q 0� U=� ' 2r FLOW NOTES O 1. BOULDERS SHALL BE HARD, DURABLE ROCK WITH o mQ Eo U') 0 MINIMUM DIMENSIONS OF 4'X2'X2'. FLAT, STACKABLE rn BOULDERS ARE PREFERRED. z 0 0 2. SET NEW HEADER BOULDERS ABOVE AND ROUGHLY 2' o �O UPSTREAM OF EXISTING ROW OF FOOTER BOULDERS. Q w z a 3. ADDITIONAL BUTTRESS OR FOOTER BOULDERS MAY BE Z 60 }? J 22 REQUIRED DEPENDING ON SITE CONDITIONS a z J BACKFILL WITH ON -SITE ENCOUNTERED DURING CONSTRUCTION. iu w m COBBLE AND GRAVEL = s U HEADER BOULDER (TYP) z TOP OF BANK 5% SLOPE SEE NOTE 3 FOOTER BOULDER PROFILE A -A' PLAN STING FOOTER BOULDER (TYP) HEADER BOULDER NON -WOVEN FILTER FABRIC 2' MIN. 2' MIN. BACKFILL W/ ON -SITE "" RIVER BED COBBLE AND GRAVEL t!`OOTER VARIES BOULDER SECTION B-B' 2 BOULDER VANE 4 NTS PRELIMINARY PLANS NOT FOR CONSTRUCTION_] r) a ZWO 0YU Owryz (Ifw aC)>� N w E Z J > w D ~000 U) U) W Z 0 � m�oZ Q in cD } N O N DATE: SEPT 2020 SCALE: AS SHOWN DETAILS SHEET 4 OF 4 Looking Downstream at Eroding Bank Undercut Bank Detail SITE PHOTOGRAPHS BIG LOST COVE CREEK BANK STABILIZATION 2026 SOUTH TOE RIVER ROAD November 10, 2020 Bank Erosion Looking Left to Right Timber Cribbing to be Removed 4 HEADWATERS ENGINEERING