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HomeMy WebLinkAbout20141254 Ver 1_401 Application_20141214December 1, 2014 North Carolina Department of Environmental and Natural Resources NC DWR, 401 & Buffer Permitting Unit 512 North Salisbury Street Raleigh, NC 27604 RE: Pre - Construction Notification (PCN) Application Petition Project Project Location: 709 Hunting Ridge Road, Raleigh NC 27615 Dear NC DWR, 401 & Buffer Permitting Unit: Enclosed are six copies of the completed "Pre- Construction Notification (PCN) Application Form" including 11 x 17 inch plans. A $240.00 payment for the permit fee was made via electronic transfer. I am submitting one copy of this application to the United States Army Corps of Engineers. Thank you for your assistance in processing this application. If you need additional information, please contact me at (919) 996 -4028. Sincerely, o C �A0 Robert Kirkpatrick DEC 0 5 2014 Project Manager Enclosures cc: Blair Hinkle, P.E. Chris Stanley, P.E. - WAFER OFFICES • 222 WEST HARGETT STREET • POST OFFICE BOX 590 • RALEIGH, NORTH CAROLINA 27602 Sullinlary Related Documents ', Invoice information Voucher Attributes frrorSvmmary Business Unit COR01 Invoice Number: 1�09 Hunting Ridge Road---- Voucher ID' Invoice Date: x1/24/2014 I PO NumberF------� 00305900 Voucher Style' Regular Print Invoice Total. 24000 Vendor NC DEPT OF ENVIRONMENTAL & Pay Terms Due Now Schedule Payments NATURAL RESOU 1650 MAIL SERVICE CENTER RALEIGH, NC 27699-1650 'A A Scheduled Payment 1 L+j L—j "Romit to Imm 0 00754 'Irj-j Location. STAND] 'Address NC DEPT OF ENVIRONMENTAL & NATURAL RESOU 1650 MAIL SERVICE CENTER NC DIVISION OF WATER QUALITY RALEIGH. NC 27699-1650 240001 USID Gross Amount Discount. -0-NI LISD E) Discount Denied 1 v24& 14 _I Scheduled Due, 11 /24/20 14 Net Due Discount Duo. Accounting Dat• 112/041201-4 ;'Bank, k/VBNC Pay Group- i ---- - -- 12552 I'Account - -- Mothod ACH ACH Layout IST *Handling, *Netting IN jPermit Fee - 709111-inting Ridge Road mossage, Message will appear on remittance advice Messages I' Schedule Payment Date, i Action, ln�/� Pay Reference Hold Payment Separate Payment, FJ Hold Reason. Letter of Credit. Irr I, Payment Inquiry HoIjd@Y/CLJFFenCV Options Express Payment Vendor Bank Account Payment Note Hole Payment Note is for internal use only and will not appear on remittance advice I�Fj Save lbt Return to Search fr= j Notify [3 Refresh jf imLnary I Related Documents I Invoice Information I Payments I Voucher Attributes I Error Summary Add I I. hup Heipfin ci ialeigh nc tis/psp/finpi-d/EMPLOYEF,/FRP/e/ENTER— VOUCHER —INFOR... 12/5/2014 2 01 41 254 of WATFq Office Use Only >_ Corps action ID no DWQ project no Form Version 14 JanuaI2009 ID Page 1 of 10 PCN Form — Version 1 4 January 2009 Pre - Construction Notification (PCN) Form A. Applicant Information 1. Processing la Type(s) of approval sought from the Corps T_ ❑X Section 404 Permit ❑ Section 10 Permit 1 b Specify Nationwide Permit (NWP) number NW 13 or General Permit (GP) number 1c Has the NWP or GP number been verified by the Corpse ❑ Yes ❑X No 1 d Type(s) of approval sought from the DWQ (check all that apply) ❑X 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit ❑ 401 Water Quality Certification — Express X❑ Riparian Buffer Authorization 1e Is this notification solely for the record because written approval is not r equired? For the record only for DWQ 401 Certification ❑ Yes ❑X No For the record only for Corps Permit ❑ Yes ❑X No ralm payment into a mitigation bank or in -lieu fee program proposed for itigation of impacts? If so, attach the acceptance letter from mitigation bank in -lieu fee program ❑ Yes No the project located in any of NC's twenty coastal counties If yes answer 1h below ❑ Yes EX] No 1h Is the project located within a NC DCM Area of Environmental Concern (AEC)? ❑ Yes ❑X No 2. Project Information 2a Name of project 709 Hunting Ridge Road 2b County Wake 2c Nearest municipality / town Raleigh 2d Subdivision name North Haven Pt Phase 3 2e NCDOT only, T I P or state project no 3. Owner Information 3a Name(s) on Recorded Deed Geoffrey Reiff 3b Deed Book and Page No DB 008300 PG 02189 3c Responsible Party (for LLC if applicable) 3d Street address 709 Hunting Ridge Road 3e City, state, zip Raleigh, NC 27615 3f Telephone no 3g Fax no MG 5 20 L 3h Email address DENR - WATER RESOURCES 4 Page 1 of 10 PCN Form — Version 1 4 January 2009 4. Applicant Information (if different from owner) 4a Applicant is ❑ Agent ❑X Other, specify City of Raleigh 4b Name Blair Hinkle, PE 4c Business pl ble a ( PP ) City,of Raleigh Public Works Department 4d Street address 222 West Hargett Street, PO Box 590 4e City, state, zip Raleigh, NC 27602 4f Telephone no 919 - 996 -4011 4g Fax no 919- 966 -7638 4h Email address blair hinkle @raleighnc gov 5. Agent/Consultant Information (if applicable) 5a Name Becky L Ward 5b Business name (if applicable) Ward Consulting Engineers, P C 5c Street address 4805 Green Road, Suite 100 5d City, state, zip Raleigh, NC 27616 5e Telephone no 919 - 870 -0526 5f Fax no 919 - 870 -5359 5g Email address bward@wce -corp corn Page 2 of 10 B. Project Information and Prior Project History 1. Property Identification 1a Property identification no (tax PIN or parcel ID) 1707937732000 1b Site coordinates (in decimal degrees) Latitude 35 8753 Longitude -78 6295 1c Property size j 034 acres 2. Surface Waters 2a Name of nearest body of water to proposed project UT to Perry Creek 2b Water Quality', Classification of nearest receiving water B, NSW 2c River basin 1 Neuse 3. Project Description 3a Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this application Please see documentation attachment 3b List the total estimated acreage of all existing wetlands on the property 0 3c List the total estimated linear feet of all existing streams (intermittent and perennial) on the property 105 3d Explain the purpose of the proposed project Please see documentation attachment 3e Describe the overall project in detail, including the type of equipment to be used Please see documentation attachment I I 4. Jurisdictional Determinations 4a Have jurisdictional wetland or stream determinations by the Corps or State$een requested or obtained for this property / project (including all prior phases) in the past? ❑ Yes ❑X No ❑ Unknown Comments 4b If the Corps made the jurisdictional determination, what type of determination was made? E] Preliminary ❑ Final 4c If yes, who delineated the jurisdictional areas? Name (if known) Agency /Consultant Company Other 4d If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation 5. Project History 5a Have permits or certifications been requested or obtained for this project (including all prior phases) in the past? Yes ❑ No ❑Unknown 5b If yes, explain in detail according to "help file" instructions A stream stabilization project was conducted on the property by the City several years ago see attached documentation 6. Future Project Plans 6a Is this a phased project? ❑ Yes X❑ No 6b If yes, explain' Page 3 of 10 PCN Form — Version 1 4 January 2009 U. Proposed Impacts Inventory 1. Impacts Summary la Which sections were completed below for your project (check all that apply) ❑ Wetlands ❑X Streams —tributaries ❑X Buffers El Open Waters El Pond Construction 2. Wetland Impacts If there are wetland Impacts proposed on the site, then complete this question for each wetland area impacted 2a 2b 2c 2d 2e 2f Wetland Impact Type of Impact Type of wetland Forested Type of jurisdiction Area of number Corps (404,10) or Impact Permanent (P) or Tem ora T DWQ (401, other) (acres) W1 - Choose one Choose one Yes/No _ W2 - Choose one Choose one Yes /No - W3 - Choose one Choose one Yes /No - W4 - Choose one Choose one Yes /No _ W5 - Choose one Choose one Yes /No _ W6 - Choose one Choose one Yes /No _ 2g Total Wetland Impacts: 2h Comments n/a 3. Stream lmpacts If there are perennial or Intermittent stream Impacts (Including temporary Impacts) proposed on the site, then complete this question for all stream sites Impacted 3a 3b 3c 3d 3e 3f 3g Stream Impact Type of Impact Stream name Perennial (PER) or Type of Average Impact number Permanent (P) or Intermittent (INT)? jurisdiction stream length Temporary (T) width (linear (feet) feet) S1 P Stabilization UT to Perry Creek PER Corps 16 30 S2 - i Choose one S3 - Choose one _ S4 - Choose one _ S5 - Choose one _ S6 - Choose one 3h Total stream and tributary impacts 30 31 Comments S1 Rip rap toe and soil lifts will be used to reconstruct the bank back to its original location to re- establish the correct pattern and channel dimension The terrace above the soil lifts will be regraded The soil lifts and bank be will re- vegetated with herbaceous and woody vegetation for long term stabilization Page 4 of 10 PCN Form — Version 1 4 January 2009 4. Open Water Impacts If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of the U S then individually list all open water impacts below 4a 4b 4c 4d 4e Open water Name of waterbody impact number (if applicable) Type of impact Waterbody Area of Impact (acres) Permanent (P) or type Temporary T 01 Choose one Choose 02 Choose one Choose 03 - Choose one Choose AM. 4g Comments "! t,noose one I Choose 4f Total open water impacts 5. Pond or Lakel Construction If and or lake construction Pr000se d, then complete the chart below 5a 5b 5c 5d 5e Pond ID number Proposed use or Wetland Impacts (acres) Stream Impacts (feet) Upland purpose of pond (acres) Flooded Felled Excavated Flooded Felled Excavated P1 Choose one P2 Choose one 5f Total: 5g Comments n/a , 5h Is a dam high hazard permit required* Yes C] No If yes, permit ID no 51 Expected pond surface area (acres) 5j Size of pond watershed (acres) 5k Method of construction 6. Buffer Impacts (for DWQ) If project will Impact, a protected riparian buffer, then complete the chart below If yes, then individually list all buffer impacts below If any impacts require mite ation, then you M UST fill out Section D of this form 6a Project Is in which i protected basing QX Neuse E] Tar-Pamlico M Catawba [] Randleman 6d 6e 6f Stream name Buffer mitigation required? q ❑ Other Zone 1 Impact (square feet ) 6g Zone 2 Impact (square feet 6b Buffer Impact number— Permanent (P) or Temporary T '6c Reason for impact B1 P Stream Stablization UT to Perry Creek No 433 0 B2 T Construction Access UT to Perry Creek No 387 239 B3 Yes/No B4 - Yes /No B5 Yes /No B6 Yes /No 6h Total Buffer Impacts: 820 239 61 Comments B1 Stream stabilization will occur along the left bank The area will be stabilized, matted, and re- vegetated B2 Construction equipment will enter from Hunting Ridge Road This area will be re- vegetated with grass matching existing Page 5 of 10 u. impact .Justification and Mitigation 1. Avoidance and Minimization 1a Specifically describe measures taken to avoid or minimize the proposed impacts in designing project Please see documentation attachment 1b Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques Please see documentation attachment 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 ❑X No 2b If yes, mitigation is required by (check all that apply) ❑ DWQ ❑ Corps 2c If yes, which mitigation option will be used for this project'? ❑ Mitigation bank ❑ Payment to in -lieu fee program ❑ Permittee Responsible Mitigation 3. Complete if Usin a Mitigation Bank 3a Name of Mitigation Bank 3b Credits Purchased (attach receipt and letter) Type Choose one Type Choose one Type Choose one Quantity Quantity Quantity 3c Comments 4. Complete if Making a Payment to In -lieu Fee Program 4a Approval letter from in -lieu fee program is attached ❑ Yes 4b Stream mitigation requested linear feet 4c If using stream mitigation, stream temperature Choose one 4d Buffer mitigation requested (DWQ only) square feet 4e Riparian wetland mitigation requested acres 4f Non - riparian wetland mitigation requested acres 4g Coastal (tidal) wetland mitigation requested acres 4h Comments 5. Complete if Using a Permittee Responsible Mitigation Plan 5a If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan n/a Page 6 of 10 PCN Form — Version 1 4 January 2009 6. Buffer Mitigation (State Regulated Riparian Buffer Rules) — required by DWQ 6a Will the project result in an impact within a protected riparian buffer that requires buffer mitigation? ❑ Yes ❑X No 6b If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation Calculate the amount of mitigation required 6c 6d 6e Zone Reason for impact Total impact Multiplier Required mitigation (square feet) (square feet) Zone 1 3 (2 for Catawba) Zone 2 15 6f Total buffer mitigation required: 6g If buffer mitigation is required, discuss what type of mitigation is proposed (e g , payment to private mitigation bank, permittee responsible riparian buffer restoration, payment into an approved in -lieu fee fund) n/a 6h Comments Page 7of10 E. Stormwater Management and Diffuse Flow Plan (required by DWQ) 1. Diffuse Flow Plan 1a Does the project include or is it adjacent to protected riparian buffers identified ❑ Yes XQ No within one of the NC Riparian Buffer Protection Rules? lb If yes, then is a diffuse flow plan included? If no, explain why ❑ Yes No 2. Stormwater Management Plan 2a What is the overall percent imperviousness of this project? 0 2b Does this project require a Stormwater Management Plan? ❑ Yes ❑X No 2c If this project DOES NOT require a Stormwater Management Plan, explain why No new impervious areas will be added to project area 2d If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan 2e Who will be responsible for the review of the Stormwater Management Plan? 3. Certified Local Government Stormwater Review 3a In which local overnment's jurisdiction is this project? 0 Phase II 3b Which of the following locally- implemented stormwater management programs ❑ NSW apply (check all that apply) ❑ USMP Water Supply Watershed Other 3c Has the approved Stormwater Management Plan with proof of approval been El Yes ❑X No attached? 4. DWQ Stormwater Program Review ❑Coastal counties 4a Which of the following state - implemented stormwater management programs apply ❑0RW � (check all that apply) ❑Session Law 2006 -246 ❑Other 4b Has the approved Stormwater Management Plan with proof of approval been Yes No attached? 5. DWQ 401 Unit Stormwater Review 5a Does the Stormwater Management Plan meet the appropriate requirements? ❑ Yes ❑ No 5b Have all of the 401 Unit submittal requirements been met? ❑ Yes ❑ No Page 8 of 10 PCN Form — Version 1 4 January 2009 F. Supplementary Information 1. Environmental Documentation (DWQ Requirement) 1a Does the project involve an expenditure of public (federal /state /local) funds or the X ❑ Yes ❑ No use of public (federal /state) land? lb If you answered "yes" to the above, does the project require preparation of an environmental, document pursuant to the requirements of the National or State ❑Yes ❑X No (North Carolina) Environmental Policy Act (NEPA /SEPA)? 1c If you answered "yes" to the above, has the document review been finalized by the State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval letter ) ❑ Yes ❑ No Comments 2. Violations (DWQ Requirement) 2a Is the site in violation of DWQ Wetland Rules (15A NCAC 2H 0500), Isolated Wetland Rules (15A NCAC 2H 1300), DWQ Surface Water or Wetland Standards, E] Yes ❑X No or Riparian Buffer Rules (15A NCAC 2B 0200)? 2b Is this an after - the -fact permit application? ❑ Yes ❑X No 2c If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s) 3. Cumulative Impacts (DWQ Requirement) 3a Will this project (based on past and reasonably anticipated future impacts) result in ❑Yes X❑ No additional development, which could impact nearby downstream water quality? 3b If you answered "yes" to the above, submit a qualitative or quantitative cumulative impact analysis in accordance with the most recent DWQ policy If you answered "no," provide a short narrative description 4. Sewage Disposal (DWQ Requirement) 4a Clearly detail the ultimate treatment methods and disposition (non - discharge or discharge) of wastewater generated from N/A the proposed project, or available capacity of the subject facility Page 9 of 10 PCN Form — Version 1 4 January 2009 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 Q No -5b Have you checked with the USFWS concerning Endangered Species Act impacts? El Yes ❑X No 5c If yes, indicate the USFWS Field Office you have contacted _ 5d What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat? Please see documentation attachment 6. Essential Fish Habitat (Corps Requirement) 6a Will this project occur in or near an area designated as essential fish habitatT ❑ Yes ® No 6b What data sources did you use to determine whether your site would impact Essential Fish Habitat? The project is located in an urban stream 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 (e g , National Historic Trust designation or properties significant in ❑Yes 0 No North Carolina history and archaeology)? 7b What data sources did you use to determine whether your site would impact historic or archeological resources? The NC Historical Preservation Office website (www hpo dcr state nc us) was searched and no sites were listed for this property In addition, no architectural structures or archaeological artifacts were noted during preliminary surveys at the site 8. Flood Zone Designation (Corps Requirement) 8a Will this project occur in a FEMA- designated 100 -year floodplain? ® Yes ❑ No 8b If yes, explain how project meets FEMA requirements The purpose of this project is to repair a stream bank that has been damaged due to erosion The proposed improvements will return the bank to its original position and grade There will be no rise in the 100 -year floodplain as a result of these improvements 8c What source(s) did you use to make the floodplain determination? (floodmaps nc gov) Blair Hinkle, PE - Applicant/Agent's Pnnted Name Date Appllcan Agent's Signature (Agent's signature is valid only if an authorization letter from the applicant is provided Page 10 of 10 Documentation for Pre - Construction Notification (PCN) Form 709 Hunting Ridge Road, City of Raleigh, NC B. Project Information and Prior Project History 3a Project Description The project is located in a residential neighborhood at 709 Hunting Ridge Road. The site is heavily wooded with open areas currently being mowed The watershed contributing to the unnamed tributary to Perry Creek that will be improved is 117 acres. The land use within the watershed is comprised of 1/4 acre residential lots with single family homes and dense commercial lots with box stores and outparcel offices and shops 3b. List the total estimates acreage of all existing wetlands on the property No wetlands are located within the project area within the limits of disturbance 3d Explain the purpose of the project The purpose of this project is to stabilize an actively eroding bank on the outside bend of the stream A rock base will be placed to stabilize the toe and three soil lifts will be placed above the toe to reconstruct the bank The eroding bank is approximately 8 -9 feet in height and is part of a knoll located between 709 Hunting Ridge Road and 705 Hunting Ridge Road. 3e Describe the overall project in detail including the he e of equipment to be used The proposed improvements to the stream bank will include a rock toe and soil lifts The rock toe will be constructed to the bankfull elevation Three one foot high soil lifts will reconstruct the bank Above the soil lifts the terrace will be graded back to a gentle slope The repair will tie into the existing bank at the location of a 12 -inch hardwood. The soil lifts and stream bank will be re- vegetated with herbaceous and woody vegetation for long term stabilization The equipment to be used in the project is earth moving equipment and various other support apparatuses. Heavy equipment may include hydraulic excavator, compactors, bulldozers, skidsteer loaders, and dump trucks to load and unload materials. The construction equipment will enter off of Hunting Ridge Road and will perform all construction within a defined limits of disturbance. Construction will occur from the top of the stream bank, no equipment will cross the stream 5b Project Histoly A stream stabilization project was completed 6 or so years ago by the City of Raleigh on this property The repairs on the outside bend of the stream did not hold The bank which is approximately 8 -9 feet in height is actively eroding The home owner petitioned the City to complete additional repairs to stabilize the stream bank D. Impact Justification and Mitigation la Specifically describe measures taken to avoid or minimize the proposed impacts in designing project This project is necessary to stabilize the stream bank and to prevent additional sediment import into the stream and therefore cannot be avoided The project has been limited to the minimum area required for construction lb Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques The proposed construction will minimize proposed impacts by performing all construction from the top of the stream bank. The proposed structural measures include rock base for stability at the stream toe along with soil lifts above rock base which incorporate natural stone and re- vegetation F. Supplementary Information 5d What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat? The site is an existing urban residential area that has been previously impacted by development and is currently maintained as lawn Habitat is not present for Wake County listed vertebrate and invertebrate endangered species. There should not be any associated T/E issues cn CCU U N �O Photo Log 709 Hunting Ridge Road, Raleigh NC Photo 1: Active erosion at the repair area Photo 2: 12 -inch tree at repair tie -in location V] cl AP u Vi Q� CCU . p� C� U 4� .o r ! w i IDI •f 1 / as°t 1 1 l o � 1 s Lake Forest Dr .41 Ji f .1 J H0,1111 the VilfaBe Ctr 1 Hunting Ridge Rd � J J -j, A , J , ryldge p ,� * J ` FM grec� � } v+ St Andrews Ct 1 i J +r ,t , g i Westbro J e i i 0 c5 r # \ Maylands Ave Location Map, 709 Hunting Ridge Road N A 0 205 410 820 Feet I 1 I 1 i 1 inch = 400 feet Disclaimer Maps makes every effort to produce and pubfish the most current and accurate information possible. However, the maps are produced for information purposes, and are NOT surveys. No warranties, expressed or implied ,are provided for the data therein. its use. or its interpretation. i —s Al age Ane3 cres S 4 % � � �,/ � � sue` \.� 1 \ j , 1 t r�. -��.' • �� 1 •i ` �, �...1 ff •i� /JI� � f /� �-. _ � a \ ') .� Yom✓^` µ ` �� �� \ � :� � y -;�', '' ice." � `, .�• fY-, � ,/', f � � - Y / h ;Pro ect I' vy it JA f t a -�! �� /� - >' � it L �. .� % / - � i \\ J+_f-b • >t �� '.� x J �� ; ^,� ; / 500 250 0 500 _ 1000 SCALE V=5001 709 HUNTING RIDGE ROAD DRAINAGE AREA MAP CITY OF RALEIGH, NORTH CAROLINA DATE. JAN 26, 2014 City of Raleigh St ltlkow � WARD CONSULTING ENGINEERS, PC FIRM LICENSE N0: C -2819 4805 Green Rd. Suite 100 (919) 870 -0528 Raleigh, NC 27818 -2848 FAX (919) 870 -5359 .- I - -- - y I %I%A IU n<iau CeC: Cecil sandy loam, 6 -10 percent slope CeD: Cecil sandy loam, 10 -15 percent slope WO: Wehadkee and Bibb soil A 0 25 50 100 Feet 1 inch = 50 feet Disclaimer 'Maps makes every effort to produce and publish the most current and accurate information possible However, the maps are produced for information purposes, and are NOT surveys. No warranties. expressed or'mphed .are provided for the data therein. its use.orits interpretation. 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O mmK LL�O O W� LL W <W ¢ �ti auo�< LLo'o ¢N0a�o K s Q W 9'' af ° O � ZZIn _j w u¢ ca w z O o N O F�1 _ N N w " 3 w `Wz tD �0cimWU a NOx ,@gz �, ° H rn KO>1 �o ~�wm0 C� aow z�yWn2 Z Z_ A�oZ��° 0 w 0 w a mOL<98�]o�M w J oW U a aOwJm�R9F- 0 F, a ° x ~�o+� °on�(nz A r, 0 ;oN�oz� w oo z w o z <R1 9(05a F, x as o g z �i� u'S J z a z r- w W` CRYOFRALEGH rn a W 0 o 0 0 m 5 0 5 H Z R xaamaexar�rt raurr. A z z O z r cT e = �•( w 0 m o F o RESIDENTIAL M AMOE UCibN N w vwi c SW -20.10 Q z Q U (xj CIS U U U Erosion Control Matting / Coconut Fiber (Coir) Blanket (C -700) Description The coconut fiber channel lining shall be a machine- produced 100% biodegradable mat. The blanket shall be of consistent thickness with the coconut fiber evenly distributed over the entire area of the mat. Coconut Fiber Blankets will only be used in locations specified by the Engineer. Locations will be on all disturbed streambanks prior to turning the streamflow into the newly constructed channel. Other problem areas may also require the placement of coconut fiber blankets. Materials Coconut fiber m Matrix We it Tensile Strength U en Area Thickness a.,...� Y lour — kiu Recommended Flow Size "C" Factor shall be provided to meet the below. 100% Coconut Fiber 20 oz/SY (678 gm/m2) 1348 x 6261b/ft minimum (1650.5 x 766.5 34% x 38% 50% 0.30 inches minimum (7.6 mm; 65036-x 29590 11 feet/second ( 3.35 m/s) 6.6 x 164 feet (120 SY) or (100 0.002 Stakes will be wooden stakes 12 in. (300 mm) in length with a notch cut 1 in. (25 mm) from the top. These stakes shall be used to stake the matting along the slopes. Wooden 3 ft. stakes spaced approximately 4 ft. apart shall be used to secure the matting at the toe of the slope. The toe stakes shall have a minimum 1 -inch by 1 -inch cross - section and shall be designed so that the matting can not slide past the exposed end of the stake. Construction Methods: Provide a smooth soil surface free from stones, clods, or debris that will prevent the contact of the matting with the soil. Place the matting immediately upon final grading. Take care to preserve the required line, grade, and cross section of the area covered. All cut slopes shall be stabilized at the end of each working day with erosion control matting. Apply fertilizer, seed, lime, and straw mulching prior to installing the matting. Prepare the soil beneath the matting with topsoil if required, seed, fertilizer, and cover with straw mulch. Unroll the matting and apply without stretching such that it will lie smoothly but loosely on the soil surface. Bury the top slope end of each piece of matting in a narrow trench at least 6 inches (150 mm) deep and tamp firmly. Where one roll of matting ends and a second roll begins, overlap the end of the upper roll over the buried end of the second roll so there is a 6 inches (150 mm) overlap. Construct check trenches at least 12 inches (0.3 m) deep every 50 feet (16 m) longitudinally along the edges of the matting or as directed by the Project Engineer. Fold over and bury matting to the full depth of the trench, close and tamp firmly. Overlap matting at least 6 inches (150 mm) where 2 or more widths of matting are installed side by side. Place stakes across the matting at ends, junctions, and check trenches approximately 1 foot (90.3 m) apart with notch facing upslope. Place stakes along the outer edges and down the center of each strip of matting 3 feet (1 meter) apart. Place stakes along all lapped edges 1 foot (0.3 m) apart. Refer to details in the plan sheets. The Engineer may require adjustments in the trenching or staking requirements to fit individual site conditions. Basis of Payment The quantity of "Erosion Control Matting /Coir Matting" measured as provided above will be paid for at the contract unit price per square yard for "Erosion Control Matting/Coconut Fiber (Coin) Blanket' ' and shall include all work and materials required in this section. Payment for staples, stakes, and twine will be included in the contract unit price for "Erosion Control Matting ". Payment will be made under: Erosion control matting ............................................. SY O Ct O ct O U N CA O u bA W 00 +6L NOUVIS 9NIMOIINOW 4N3 0 0 0 a� 1�• ' bh 0 OL III Yl IM 0 0 0 a X o. o � a M (U N � O X 12 Q N a e W 1 T p 1 0 0 0) O 0 fl O R0.c 0 0 a am .0 c c o cn L vos LO 2 m� L o 0 c O x N 0o J a S U c g 0 0 v 0 0 M +0 0 .-i V1 O 0 0 X I-- O 0 M a o N a 0 00 ' � o O O C 0) co co co N O co co (1001) UOIIBA013 I I i I I� i I i I I i Y I m i I 0 i I I m w i ' I c o N I o i I I I Protect 709 Hunting Ridge Road Summa bankfull Cross Section 1 MYO MY1 MY2 Feature Pool A (BKF) 497 Station 0 +33 W (BKF) 223 Date 26- Feb -14 Max d 49 Crew SV, CC Mean d 22 W!D 100 Surveyed WI -2010 MY2 -2011 Station Elevation Notes Station Elevation Notes Station Elevation Notes 000 9455 LPIN 773 9395 1180 9386 1712 9357 2128 9343 2451 9286 TOBL 2571 9247 2621 9169 2692 9094 2758 9015 2806 8894 2957 8824 3021 8733 TOEL 31 74 8760 3344 8687 3366 8684 TW 3437 8718 TOER 3565 8765 3634 8880 3711 8940 3758 8965 3810 9014 000 3990 9040 4079 90 55 4352 9094 TOBR 45 61 91 23 4848 9179 5289 9253 5557 9275 RPIN Cross Section 1 Station 0 +33 Pool 9500 94 00 9300 9200 d 091 00 c 0 00 m v W89 00 8800 8700 8600 000 1000 2000 3000 40 00 50 00 60 00 Station (Feet) t Ground —BKF Protect 709 Hunting Ridge Road Summa bankfull Cross Section 2 MYO MY7 MY2 Feature Riffle A (BKF) 200 Station 0 +48 W (BKF) 160 Date 26 -Feb -14 Max d 30 Crew Sv, CC Mean d 1 2 W/D 129 Surveyed MY1 -2010 MY2.2011 Station Elevation Notes Station Elevation Notes Station Elevation Notes 000 9691 LPIN 339 _ 9664 - - - 670 9648 1332 9603 1684 9610 1864 9598 1924 9589 TOBI 1971 9484 2028 9268 2107 91 97 2243 91 14 2319 9072 2430 9015 2502 8941 2608 8832 2641 8753 TOEL 2706 8745 2772 8761 2865 8781 2993 8767 TW 3053 8779 3157 8799 3265 8801 3356 8787 34 12 8792 TOER 3470 8816 3543 8932 3594 8958 tobr 3705 8999 3983 9040 4209 9095 4511 9146 4861 9222 5340 9274 73 8 RP Cross Section 2 Station O +qg Riffle 98 96 94 m w LL c 2 O A J W 90 88 86 0 10 20 30 40 50 60 70 Station (Feet) --Ground -D-BKF Project 709 Hunting Ridge Road Summa bankfull Cross Section 3 MYD MY7 MY2 Feature Riffle A (BKF) 210 Station 0 +66 W (BKF) 93 Date 26- Feb-14 Maxd 35 Crew Sv, CC Mean d 23 WID 41 MYO -2009 W72010 MY2 -2011 Station Elevation Notes Station Elevation Notes Station Elevation Notes 000 9680 LPIN - 312 9666 -000 - 733 9630 000 1168 9587 000 1512 9548 000 1786 9510 000 2068 9435 000 2232 9367 000 2375 9294 000 2532 9199 tobl 2606 9160 2686 91 16 2714 9065 2732 9064 2764 9002 2821 8958 2968 8637 TOEL 3063 8610 3204 8607 TW 3259 8613 3374 8605 3444 8644 3498 8705 TOER 3560 8867 3598 8885 000 3679 8903 3679 8917 3746 8957 tobr 3910 9000 4046 9056 41 42 9089 4301 91 67 44 15 9228 4623 9274 4949 9284 RPIN Cross Section 3 Station 0 +66 Riffle 98 96 94 N92 tL 090 A 1!188 86 84 0 10 20 30 40 50 60 Station Feet -+— Ground -a BKF