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HomeMy WebLinkAbout20171099 Ver 1_401 Application_20170831Montalvo, Sheri A From: Swartley, Bill Sent: Thursday, October 05, 2017 10:04 AM To: Montalvo, Sheri A Cc: Higgins, Karen; Tillotson, Victoria Subject: FW: Linville Permits paid Sheri, Per our morning phone conversation, see the email below from our Grant Program Coordinator, Victoria Tillotson, where she cut and pasted from the XTND report. The interagency e -transfer of permit fees was made to both DWR and DEMLR on 9/11: Please let me know if other questions arise or if you need additional information. Victoria — so you know, Sheri just called me inquiring on the permit fee to support our application to Karen Higgins, thus sharing your previous email. Thanks for handling! RIM William (Bill) A. Swartley Forest Hydrologist, Program Head Water Resources Branch PI02, Smith Incident Management Team PIO1, HPDR, PETL, PETM - Single Resource North Carolina Forest Service NC Department of Agriculture & Consumer Services 512 N. Salisbury Street 1616 Mail Service Center, Raleigh, NC 27699-1600 (0) (919) 857-4856 (F) (919) 857-4804 B i 11. Swartleygncagr. gov Visit the NCFS Water Quality (WQ) Web Site at: http://ncforestservice.gov/water quality/water quality.htm NOTICE: E-mail correspondence to and from this address may be subject to the NC Public Records Law and may be disclosed to third parties by an authorized state official. From: Tillotson, Victoria Sent: Monday, September 18, 2017 9:30 AM To: Swartley, Bill <bill.swartley@ncagr.gov>; Gerow, Tom <tom.a.gerow@ncagr.gov>; Coats, William A <alan.coats@ncagr.gov> Subject: Linville Permits paid Hi Guys, I checked XTND and the permits for the Linville River project have been paid. They were paid on 9/11/2017. Just closing that loop. VT 20 535120 09/11/2017 166108 WATER QUAL.APP. 570.00 566000372 408 NC DEP' 20 S35120 09/11/2011 16610S SEI?IMM .iMME 00.00 S6 6 0072 4p NC Dep' Victoria Tillotson Grant Program Coordinator Water Resources Branch NCDA &CS - North Carolina Forest Service 1616 Mail Service Center, Raleigh, NC 27699-1600 Phone: (919) 500-8757 V ictoria.Ti l lotson@`gr. jzov http://ncforestservice.gov NOTICE: E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. Steven W. Troxler Commissioner North Carolina Department of Agriculture and Consumer Services N.C. Forest Service August 28, 2017 Scott Bissette Assistant Commissioner Karen Higgins 2 0 1 7 1 0 9 9 NC DWR, 401 and Buffer Permitting Unit 512 North Salisbury Street Raleigh, NC 27604 t; M z Dear Ms. Higgins: Please find enclosed the Pre -construction Notification (PCN) and supporting documentation to apply for a Nationwide Permit (NWP) No. 27 for the Linville River Restoration project on Gill State Forest, near Newland, NC. The project is a non -compensatory stream improvement project on approximately 3,000 linear feet of the Linville River. The goals of the project are to improve aquatic habitat, improve water quality, reduce streambank erosion, restore floodplain connection, and establish native riparian vegetation. Natural channel design and related stream stabilization practices will be utilized. Copies of the PCN have also been mailed to the US Army Corps of Engineers and NC Wildlife Resources Commission. Please contact me if you have any questions. William A. Swartley Forest Hydrologist & Program Head Water Resources Branch, NC Forest Service Enclosures: PCN and attachments (4 copies) Check for $570.00 1616 Mail Service Center, Raleigh, North Carolina 27699-1616 Phone: (919) 8574801 • FAX: (919) 8574802 • www. ncforestservice.gov An Equal Opportunity Employer =SRO M �UG D V _L LO1% Office Use Only: Corps action ID no. DWQ project no. Form Version 1.4 January 2009 Page 1 of 10 PCN Form — Version 1.4 January 2009 Pre -Construction Notification (PCN) Form A. Applicant Information 1. Processing 1 a. Type(s) of approval sought from the Corps: ❑X Section 404 Permit ❑ Section 10 Permit 1 b. Specify Nationwide Permit (NWP) number: 27 or General Permit (GP) number: 1c. Has the NWP or GP number been verified by the Corps? ❑ Yes ❑X No 1d. Type(s) of approval sought from the DWQ (check all that apply): 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit ❑ 401 Water Quality Certification — Express ❑ Riparian Buffer Authorization 1 e. Is this notification solely for the record because written approval is not required? For the record only for DWQ 401 Certification: ❑ Yes ❑X No For the record only for Corps Permit: ❑ Yes ❑X No 1f. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts? If so, attach the acceptance letter from mitigation bank or in -lieu fee program. ❑ Yes ❑X No 1g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1h below. ❑ Yes Q No 1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)? ❑ Yes Q No 2. Project Information 2a. Name of project: Linville River Restoration 2b. County: Avery 2c. Nearest municipality / town: Crossnore 2d. Subdivision name: N/A 2e. NCDOT only, T.I.P. or state project no: N/A 3. Owner Information 3a. Name(s) on Recorded Deed: State of North Carolina 3b. Deed Book and Page No. 68/515 & 68/516 (Tax Parcel No.: 183300532783) (www.averydeeds.com) 3c. Responsible Party (for LLC if applicable): William "Bill" A. Swartley, North Carolina Forest Service 3d. Street address: 512 N. Salisbury Street 3e. City, state, zip: Raleigh, NC 27604-1170 3f. Telephone no.: 919-857-4856 3g. Fax no.: 919-857-4804 3h. Email address: bill.swartley@ncagr.gov Page 1 of 10 PCN Form — Version 1.4 January 2009 4. Applicant Information (if different from owner) 4a. Applicant is: ❑ Agent ❑ Other, specify: 4b. Name: 4c. Business name (if applicable): 4d. Street address: 4e. City, state, zip: 4f. Telephone no.: 4g. Fax no.: 4h. Email address: 5. Agent/Consultant Information (if applicable) 5a. Name: 5b. Business name (if applicable): 5c. Street address: 5d. City, state, zip: 5e. Telephone no.: 5f. Fax no.: 5g. Email address: Page 2 of 10 B. Project Information and Prior Project History 1. Property Identification 1a. Property identification no. (tax PIN or parcel ID): 1183300532783 1 b. Site coordinates (in decimal degrees): ILatitude: 36.009945 Longitude: -81.931868 1c. Property size: 474 acres 2. Surface Waters 2a. Name of nearest body of water to proposed project: Linville River 2b. Water Quality Classification of nearest receiving water: B; Tr 2c. River basin: Catawba 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: see attached 3b. List the total estimated acreage of all existing wetlands on the property: 3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 3d. Explain the purpose of the proposed project: see attached 3e. Describe the overall project in detail, including the type of equipment to be used: see attached 4. Jurisdictional Determinations 4a. Have jurisdictional wetland or stream determinations by the Corps or State been requested or obtained for this property / project(including all priorphases) in thepast? ❑ Yes © No ❑ Unknown Comments: 4b. If the Corps made the jurisdictional determination, what type of determination was made? 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 ❑X No ❑Unknown 5b. If yes, explain in detail according to "help file" instructions. 6. Future Project Plans 6a. Is this a phased project? ❑ Yes Q No 6b. If yes, explain. Page 3of10 PCN Form —Version 1.4 January 2009 C. Proposed Impacts Inventory 1. Impacts Summary 1 a. Which sections were completed below for your project (check all that apply): ❑ Wetlands © Streams —tributaries ❑ Buffers ❑ Open Waters ❑ Pond Construction 2. Wetland Impacts If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted. 2a. Wetland impact number Permanent (P) or Temporary 2b. Type of impact 2c. Type of wetland 2d. Forested 2e. Type of jurisdiction Corps (404,10) or DWQ (401, other) 2f. Area of impact (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: 3. Stream Impacts 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. Stream impact number Permanent (P) or Temporary m 3b. Type of impact 3c. Stream name 3d. Perennial (PER) or intermittent (INT)? 3e. Type of jurisdiction 3f. Average stream width (feet) 3g. Impact length (linear feet) S1 P Stream Restoration Linville River PER Corps 70 2,989 S2 - Choose one S3 - Choose one S4 - Choose one S5 - Choose S6 - Choose one 3h. Total stream and tributary impacts 2,989 3i. Comments: 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. Open water impact number Permanent (P) or Temporary 4b. Name of waterbody (if applicable) 4c. Type of impact 4d. Waterbody type 4e. Area of impact (acres) 01 - Choose one Choose 02 - Choose one Choose 03 - Choose one Choose 04 - Choose one Choose 4f. Total open water impacts 4g. Comments: S. Pond or Lake Construction If pond or lake construction proposed, the complete the chart below. 5a. Pond ID number 5b. Proposed use or purpose of pond 5c. 5d. 5e. Wetland Impacts ('acres) Stream Impacts (feet) Upland (acres) Flooded Filled Excavated Flooded Filled Excavated P1 Choose one P2 Choose one 5f. Total: 5g. Comments: 5h. Is a dam high hazard permit required? E] Yes No If yes, permit ID no: 5i. 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 mitigation, then you MUST fill out Section D of this form. 6a. Project is in which protected basin? ❑ Neuse Tar -Pamlico ❑ Catawba ❑ Randleman ❑ Other: 6b. Buffer Impact number — Permanent (P) or Temporary 6c. Reason for impact 6d. Stream name 6e. Buffer mitigation required? 6f. Zone 1 impact (square feet) 6g. Zone 2 impact (square feet 131 - Yes/No B2 - Yes/No B3 - Yes/No B4 - Yes/No B5 - Yes/No B6 - Yes/No 6h. Total Buffer Impacts: 6i. Comments: Page 5 of 10 D. Impact Justification and Mitigation 1. Avoidance and Minimization 1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project. As this is a river restoration project, it is impossible to completely avoid impacts to jurisdictional waters. The intents of the project are to improve aquatic habitat, improve water quality, reduce streambank erosion, restore floodplain connection, and establish native riparian vegetation. Natural channel design and related stream stabilization practices will be utilized. The design reflects the minimum impact that can be applied to achieve the desired long-term result. 1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques. Appropriate sediment and erosion control measures will be taken on site, in accordance with the attached design plans and an Erosion and Sediment Control Plan filed with NC DEMLR. Appropriately sized equipment will be utilized to prevent excessive compacting and minimize Gearing. Construction timing and sequencing will be strategically conducted to minimize impacts. 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 Q 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 Using 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. 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 Q 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. Zone 6c. Reason for impact 6d. Total impact (square feet) Multiplier 6e. Required mitigation (square feet) Zone 1 3 (2 for Catawba) Zone 2 1.5 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). 6h. Comments: Page 7 of 10 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 Q No within one of the NC Riparian Buffer Protection Rules? 1 b. 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 ©No 2c. If this project DOES NOT require a Stormwater Management Plan, explain why: This project is a river restoration project and does not include an increase in impervious 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 localgovernment's jurisdiction is thisproject? ❑ Phase II 3b. Which of the following locally-implemented stormwater management programs ❑ NSW ❑ USMP apply (check all that apply): ❑ Water Supply Watershed ❑ Other: 3c. Has the approved Stormwater Management Plan with proof of approval been ❑Yes ❑ No attached. 4. DWQ Stormwater Program Review ❑Coastal counties ❑HQW 4a. Which of the following state-implemented stormwater management programs apply ❑ORW (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) la. Does the project involve an expenditure of public (federal/state/local) funds or the © Yes ❑ No use of public (federal/state) land? 1 b. 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 Q 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.) Project is non -compensatory stream restoration/enhancement and therefore falls El Yes E] No Comments: under the provisions of 15NCAC 01C.0408 and does not require env documentation. 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, ❑Yes Q No or Riparian Buffer Rules (15A NCAC 2B.0200)? 2b. Is this an after -the -fact permit application? ❑Yes Q 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 Q 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. This project is a river restoration project on State-owned land and will not lead to additional development. 4. Sewage Disposal (DWQ Requirement) 4a. Clearly detail the ultimate treatment methods and disposition (non -discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. Wastewater will not be generated as part of this river restoration project. 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 Yes ❑ No habitat? 5b. Have you checked with the USFWS concerning Endangered Species Act ❑ Yes ❑X No impacts? 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? The NC Natural Heritage Program website was used to search for natural heritage elements on/near the project site. Four were identified, with two that are federally listed: Grandfather Mountain Crayfish (Federal Species of Concern) and Northern Long-eared Bat (Threatened, with Interim 4(d) Rule). 6. Essential Fish Habitat (Corps Requirement) 6a. Will this project occur in or near an area designated as essential fish habitat? ❑ Yes ❑X No 6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat? South Atlantic Fishery Management Council Habitat and Ecosystem Atlas (http:/ocean.floridamarine.org/safmc_atias) 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 ❑ Yes ❑X No status (e.g., National Historic Trust designation or properties significant in North Carolina history and archaeology)? 7b. What data sources did you use to determine whether your site would impact historic or archeological resources? The NCSHPO GIS website shows no historic or archeological resources within the project site (http:/gis.nodr-r.gov/hpoweb) (Note: The nearest historic or archeological resource to the project is Sloop's Dam and Powerhouse on the Linville River (AV0082), which will not be affected by the project.) 8. Flood Zone Designation (Corps Requirement) 8a. Will this project occur in a FEMA -designated 100 -year floodplain? ❑X Yes ❑ No 8b. If yes, explain how project meets FEMA requirements: The applicant is working with Avery County and the state of North Carolina to ensure the river restoration project meets FEMA requirements. 8c. What source(s) did you use to make the floodplain determination? NC Floodplain Mapping / FIRM William A. Swartley August 28, 2017 Applicant/Agent's Printed Name Date Applicant/ gents ature (Agent's signature is valid only if an authorization letter from the applicant isprovided.) Page 10 of 10 Pre -Construction Notification (PCN) Form — Attached Information Linville River Restoration, Avery County, North Carolina 3a. The project site consists of the riparian corridor of 2,989 feet of the Linville River on the property of Gill State Forest, near Newland, North Carolina. This reach of the Linville River contains unvegetated streambanks, eroding streambanks, large mid -channel bars, and reduced floodplain access. The present degraded condition of the river is partially due to waterway relocation and channelization practices that were likely conducted in the 1950 to 1970 timeframe, primarily as flood control measures. This has resulted in eroding, unstable river banks that are contributing sediment to the waterway. The alteration of in -channel hydrologic flow patterns has resulted in increased substrate sedimentation as there is no longer sufficient water energy to mobilize the accumulated sediment, outside of periodic storm events. The high degree of substrate embeddedness due to siltation and sedimentation has substantially reduced available aquatic habitat. During storm events, unstable river banks release sediment and mature riparian vegetation periodically falls into the channel due to excessive bank erosion. Much of the river reach is disconnected from the floodplain, thus exacerbating in -channel erosion processes during high water events. The stream classification for this portion of the Linville River is B, Tr (Trout) according to the North Carolina Department of Environmental Quality, Division of Water Resources. The project site is wholly located on one parcel, as shown in the attached parcel map. The attached photos and aerial photography provide representative views of the current site conditions. 3b. The Gill State Forest property is very large, and acreage of total wetlands is unknown. The proposed project will not affect any wetlands. 3c. The Gill State Forest property is very large, and total stream length is unknown. The proposed project will affect 2,989 linear feet of the Linville River. 3d. The goals of the project are to improve aquatic habitat, improve water quality, reduce streambank erosion, restore floodplain connection, and establish native riparian vegetation. 3e. Natural channel design and related stream stabilization practices will be utilized. The attached plans show the design approach. Within the 2,989 foot reach, the design includes the following: -removal of large mid -channel bars, and associated realignment of the channel -minor realignment of the channel to create appropriate dimensions and floodplain access -development of an appropriate riffle -pool sequence through the project reach -installation of multiple log and boulder in -stream structures, with the goals of grade control, bank protection and habitat enhancement through pool creation -installation of toe wood on some streambanks, with the goals of bank protection and habitat enhancement Any woody material cleared from the site will be incorporated into the new streambed and banks as part of in -stream structures, toe wood, and riffle bed. Typical stream construction equipment will be used including backhoes and trackhoes. Appropriate sediment and erosion control measures will be implemented and monitored throughout construction. Avery County, NC WebG1S https://www.webgis.net/Common/print.ph Disclaimer: The information contained on this page is NOT to be construed or used as a survey or legal Approx. Scale 1:17838 description. Map information is believed to be accurate but accuracy is not guaranteed. 0 0.3 mi 0.6 mi Attributes at point: 1134763, 834154 Layer: Census Tracts (2000) Layer: Townships STCNTRBG: 370119902 4 Township: Altamont 1 of 1 8/20/17,6:11 PD Layer: Parcels Parcel Number: 183300532783 Land Value: 1659000 Deed—Date: 19000101 Total Value: 3923500 Acreage: 474.000AC Approved By: 6 Owner Name: N C DEPT OF ADMIN Year Built: 1975 Account Number: 15780 Fire Department: 2 Additional Info: 6065 LINVILLE FALLS HWY Township Code: 1 Mailing Addr1: FOREST SERVICE MNBH_NO: 250 Mailing Addr2: PO BOX 1351 Acres (measured): 462.952 Mailing City: RALEIGH Deed Book: 36 Mailing State: NC Deed Page: 506 ZIP: 255162526 Deed Date: 01/01/1900 House Number: 6065 Appraisal Date: 07/15/2011 Street Name: LINVILLE FALLS Size: 474 Street Type: HWY Units: Acres Bldg Value: 2250500 Shape.STArea(): 20166225.032288 Other Bldg Value: 14000 Attributes at point: 1134763, 834154 Layer: Census Tracts (2000) Layer: Townships STCNTRBG: 370119902 4 Township: Altamont 1 of 1 8/20/17,6:11 PD Existing Site Conditions Upstream view from upstream end of existing mid -channel bar Downstream view of mid -channel bar and left branch of Linville River jvo j Y i s � � � �` , / ' i l � L \ �J �� I, � � �j" � � ice'; i� � � � ��� Ij � I , r � ii � %� \ i \ 1 � ��� )f'� � � �1 ,-�i`: \ � �-,� ` �� i V `moi r � � �< � � C \ � �, � S 0> r / '(` < �, `� _ --� - A. LINVILLE RIVER REACH 2 RESTORATION 6065 LINVILLE FALLS HWY, NEWLAND, NC 28657- AVERY COUNTY SHEET INDEX TITLE SHEET 1.0 PROJECT OVERVIEW 2.0 PROPOSED CROSS-SECTIONS PROPOSED PLAN AND PROFILE PROPOSED S&EC PLAN PROPOSED PLANTING PLAN PROPOSED STRUCTURE DETAILS 3.0 4.0 5.0 6_0 7.0 60% PLANS FOR PERMITTING SUBMITTED ON AUGUST 25, 2017 Z W' Lnz (q -'j ZZ, O Z �a W w' PROJECT DIRECTORY LAND OWNER NC FOREST SERVICE BILL SWARTLEY 919.857.4856 bill.swartley@ncagr.gov COORDINATOR RESOURCE INSTITUTE, INC. CHARLES ANDERSON 336.830.0595 canderson@resourceinstituteinc.org ENGINEER JENNINGS ENVIRONMENTAL GREG JENNINGS, PHD, PE 919.600.4790 jenningsenv@gmail.com CONSTRUCTION NORTH STATE ENVIRONMENTAL DARRELL WESTMORELAND 336.725.2010 darrell@nsenv.com SHEET INDEX TITLE SHEET 1.0 PROJECT OVERVIEW 2.0 PROPOSED CROSS-SECTIONS PROPOSED PLAN AND PROFILE PROPOSED S&EC PLAN PROPOSED PLANTING PLAN PROPOSED STRUCTURE DETAILS 3.0 4.0 5.0 6_0 7.0 60% PLANS FOR PERMITTING SUBMITTED ON AUGUST 25, 2017 Z W' Lnz (q -'j ZZ, O Z �a W w' SCALE' 1" = 100'F - win STA G+00 TO 15+40—SHEET 4.1 .�-..rte STA 15+40TO29+S9—SHELI 4.1 NO Z QN uj O`a(ow LLJ J ZOZ w _ gLL a z> J Z O Z O W - f� a 4-0 z O 0 z a� Lnz kDF Z OAs Z>� ui �4 1 BANKFULL BENCH 3:j LINVILLE RIVER REACH 2 - PROPOSED RIFFLE CROSS-SECTION TYP. PROPOSED 700 GRAM COIR EROSION CONTROL MATTING, SEE DETAIL BKF WSE INNER BERM WIDTH VARIES PER PLAN 68.6 FT - - 29.8 FT 4.8 FT PROPOSED CENTERLINE ALIGNMENT - 1.4 FT INNER BERM LINVILLE RIVER REACH 2 - PROPOSED POOL CROSS-SECTION �YP.) WIDTH VARIES PER PLAN 82.3 FT ---------------- ----- --------------------- :,------------------ POINT BAR za, PROPOSED 700 GRAM COIR EROSION CONTROL MATTING, SEE DETAIL i 12.0 FT PROPOSED CENTERLINE ALIGNMENT g:1 BANKFULL BENCH PROPOSED RIFFLE SUMMARY PARAMETER DESIGN VALUE QBKF 1260 CFS ABKF 235 FT2 WBKF 68.6 FT DBKF 3.4 FT DMAx 4.8 FT W/D 20.0 ER 2.0-3.0 DMAXIDBKF 1.4 QBKF 5.4 FT/S TBKF 0.9 PSF BANKFULL BENCH PROPOSED POOL SUMMARY PARAMETER DESIGN VALUE APOOL 516 FT2 WPOOL 82.3 FT DPOOL 6.3 FT DMPOOL 12.0 FT APOOLIABKF 2.2 WPOOLIWBKF 1.2 DMPOOLIDBKF 3.5 N 0 (� U Z Q�U� o U) I jUF.d ofZwv) wowZ w J��a �U? z Z Zo 3U) J 0 Z U 7 W PLAN LEGEND PROPOSED BANKFULL PROPOSED CENTERLINE PROPOSED INNER BERM ® NATIVE RIFFLE BOG J -HOOK LOG.IHOOK WITH BOULDERS WITHB U LOG J -HOOK WITH BOULDERS SEE DETAILS SHEET 6.4 BOULDER J -HOOK •� TOE HOOD REVETMENT + O m. V r m + 10 O. M 0 U + U a Q A a c� U D ° ��. °� ° .. ��.. 10+00 a d p ED ° p �p' _ 4+00 _...� 6+00 8+00 _ _ — 12+ p — — — 6+� _ �2+00 ° 0 14+00 p+00 NATIVE RIFFLE SEE DETAIL SHEET 6.1 \ REMOVE EXISTING , BOULDER CROSS VANE U/S OF EXISTING BRIDGE MID CHANNEL BAR (MCB) TO FOCUS FLOW AND ENERGY AT CENTER OF CHANNEL SEE DETAIL SHEET 6.2 BOULDER CROSS VANE AT TOE WOOD REVETMENTWITH �. REMNANT LOW WATER BRIDGE SOIL GEOLIFTS SEE DETAIL SHEET 6.2 SEE DETAIL 6.5 o(A&V a SCALE -1" = 50' 3185 - 3185 3180 3180 3175 y C-4 Ncli O co O Ip 3175 U H c� a m � o � a a a m M 3170 0.32% a a 3170 3165 ------------ "_ -0.40%- _ --_--- --------- ---------___--- - =___0.60%- -- __, -------- ----------- - 3165 � \�---------------� ��_ 0.59%_ - � -0 75% 3160 - -- -- ------- -- --- -_ o 0.75/0 \ �-,..___73155 3160 3155 - / ` / 3150 3150 0 PT: 3165.08 � � V !9 OR cli� 3145 a 3145 — - 3140 PC: 3159.23-/3140 3130+00 2+00 4+00 6+00 8+00 10+00 12+00 14+00 15+4035 CN O U mC)w www Q j w Q (n W EZWcn -j CL Z W ZZ 0 �QLL_a �a Z_ � z J Z Lo Z a ZW PLAN LEGEND PROPOSED BANKFULL PROPOSED CENTERLINE PROPOSED INNER BERM ® NATIVE RIFFLE BOULDER CROSS -VANE LOG J -HOOK VATH BOULDERS LOG J -HOOK WITH BOULDERS BOULDER J -HOOK SEE DETAILS SHEET 6.4 TOE WOOD REVETMENT N ° 0 + ai + C + G1 lh � N 'T C) M h Q O + + M �. V O� W + + 28+00 o X16+00 v N �Y _ 29+89 +� 22+00 0 0 W 18*00 20+00 _. _ 24+00 = 0 � 0 > NATIVE RIFFLE 0 z + SEE DETAIL SHEET 6.1 W 1n t J n Z J 2 TOE WOOD REVETMENT BOULDER J -HOOK Z i WITH SOIL GEOLIFTSSEE DETAIL SHEET 6.3 Z a+ SEE DETAIL 6.5Z i i Lu C- w WfM o SCALE: 1" = 50' • 3185 3185 3180 3180 3175 3175 ai 3170 170 3 3165 3165 3160 3160 3155 3155 it 3150\% / If 3150 3145 3145ci 3140 3140 3135 3135 15+40 16+00 18+00 20+00 22+00 24+00 26+00 28+00 30+00 Z a s � W � Z z g do J tyy�"k j 113 1 J �dlodOa,� op N 0 � s = U W Z � N Q Lu W D_ Q cn W w �-a UU w 0�ZW(n J wdG_z LL JZ�g waf g a �a Z �: PC: 3159.23 U ° FF M M th u1 N N N u�i _ a 0.40%, —0.75%— � ♦ --- 0.75% _ – 0.75_%---' – ----- -- -- ---- 0.77_ % – - M 0 uNi n M � N o: � PC: 3153.00 USE EXISTING PATH TO —� REMNANT FORD CROSSING UPSTREAM RIVER ACCESS CONSTRUCTION SCHEDULE 1. OBTAIN EROSION AND SEDIMENTATION PLAN APPROVAL, TROUT BUFFER VARIANCE WAIVER, AND ALL OTHER APPLICABLE PERMITS. 1. NOTIFY INSPECTOR FROM ASHEVILLE REGIONAL OFFICE OF DED PRIOR TO DISTURBANCE, 2. POST CERTIFICATE OF APPROVAL FOR LAND DISTURBANCE AT SITE. 3. INSTALL RAIN GAUGE AND PREPARE INSPECTION FORMS AS DESCRIBED ABOVE. 4. FLAG THE WORK UMITS AND STAKE OUT THE EXTENTS AND ELEVATIONS OF THE PROJECT. 5. FLAG THE EXTENTS OF THE TROUT BUFFER IN AREAS WHERE NO LAND DISTURBANCE WILL OCCUR. 6. LOCATE ALL UNDERGROUND UTILITIES WITHIN THE WORKSITE. 7. HOLD PRECONSTRUCTION MEETING PRIOR TO STARTING CONSTRUCTION. 8. INSTALL CONSTRUCTION ENTRANCES, ACCESS ROADS AND SILT FENCE PER THE ATTACHED PLAN SHEETS AND DETAILS. 9. INSPECT EROSION AND SEDIMENTATION CONTROL PRACTICES DAILY AND AFTER SIGNIFICANT RAINFALL EVENTS. MAKE NEEDED REPAIRS IMMEDIATELY. 10. STOCKPILE MATERIALS FOR STREAM WORK (E.G.. BOULDERS, LOGS, WOODY DEBRIS) OUTSIDE OF THE TROUT BUFFER (AT LEAST 25 FEET FROM THE TOP OF BANK). 11. TO THE EXTENT PRACTICABLE WORK ITERATIVELYP FROM UPSTREAM 70 DOWNSTREAM THROUGHOUT THE PROJECT REACHES. CONTRACTOR SHALL LIMIT STREAMBANK DISTURBANCE TO AREAS THAT CAN BE COMPLETED AND STABIUZEO DURING ONE DAY OF WORK DURING EACH ZONE OF DISTURBANCE, FOLLOW THE FOLLOWING STEPS: • AS NEEDED TO IMPLEMENT BANK GRADING, REMOVE VEGETATION. DO NOT REMOVE HEALTHY, NATIVE VEGETATION FROM AREAS WHERE NO GRADING OR STRUCTURE INSTALLATION WILL OCCUR. STOCKPILE VEGETATION FOR REPLANTING, AS APPROPRIATE. • AS SHOWN ON PLANS, REALIGN CHANNEL ENSURE CONSTRUCTED SLOPES ARE GRADED AT A31 SLOPE OR FLATTER, UNLESS DIRECTED OTHERWISE BY THE FIELD ENGINEER. WHEN POSSIBLE, PERFORM WORK FROM STREAMBANKS IN ORDER TO MINIMIZE TIME SPENT WORKING IN THE CHANNEL. • INSTALL IN -STREAM STRUCTURES, BEDFORM FEATURES, AND STREAMBANK PROTECTION PER THE PLANS. WHEN POSSIBLE, PERFORM WORK FROM STREAMBANKS IN ORDER TO MINIMIZE TIME SPENT WORKING IN THE CHANNEL • INSTALL COIR STREAMBANK MATTING AND TEMPORARY SEEDING ON ALL DISTURBED SURFACES ON THE STREAMBANK UP TO THE TOP OF BANK. 12. ANY AREA DISTURBED WITHIN 25 FEET FROM THE TOP OF THE STREAM BANK SHALL BE PROVIDED WITH TEMPORARY GROUND COVER SPECIFIED IN THE VEGETATION PLAN W THIN 10 CALENDAR DAYS, UNLESS SUPERSEDED BY THE CONDITIONS OF GENERAL STORMWATER PERMIT NCG 010000. 13. ONCE SITE IS STABILIZED, REMOVE AND DISPOSE OF ALL NONBODEGRADABLE EROSION CONTROL DEVICES. 14. NOTIFY INSPECTOR FROM ASHEVILLE REGIONAL OFFICE OF DEQ AFTER STABIUZATION. 15. WHEN APPROPRIATE, INSTALL PERMANENT VEGETATION PER PLANTING PUNS. E&SC PLAN DURING PROJECT IMPLEMENTATION, BMPS/CONSERVATION MEASURES WILL BE IMPLEMENTED TO REDUCE SEDIMENTATION INTO THE LINVILLE RIVER. EFFORTS WILL BE LADE TO LIMIT AND EXPEDITE EQUIPMENT TIME IN THE STREAM CHANNEL WHEN POSSIBLE, WORK WILL OCCUR FROM THE STREAMBANKS. THE DESIGN ATTEMPTS TO MINIMIZE SEDIMENTATION AND OTHER POTENTIALLY NEGATIVE IMPACTS THROUGH THE FOLLOWING PRACTICES: • THECONTRACTOR WILL BE REQUIRED TO STAGE AND STORE EQUIPMENT ANDMATERIALS OUTSIDE OF THE TROUT BUFFERS (25 UNEAR FEET FROM TOP OF BANKS). • EQUIPMENT WLL BE VVELL-MAINTAINED, CLEANED PRIOR TO MOBILIZATION, AND CHECKED DAILY FOR LEAKS OF PETROLEUM PRODUCTS. • FUELING WILL BE PERFORMED IN A CONTAINED AREA OUTSIDE OF THE TROUT BUFFER. • THE CONTRACTOR WILL BE REQUIRED TO STAGE WORK SUCH THAT DISTURBED AREAS WILL BE STABILIZED IN PHASES WITH SEEDING, MULCH rv�r r n rwr i vinvnYv nr\�n WITH SILT FENCE ON RIVER SIDE AND BIODEGRADABLE (COIR) EROSION CONTROL MATTING (WHERE APPROPRIATE). • ALL TREES, UTILITIES AND OTHER SITE FEATURES WALL BE PROTECTED UNLESS MARKED FOR REMOVAL OR RELOCATION. • ALL WORK ADJACENT TO STREAM WATERS WLL BE CONDUCTED IN A DRY WORK AREA TO THE EXTENT POSSIBLE. • TO THE EXTENT POSSIBLE, CONSTRUCTION WILL BE TIMED TO OCCUR WRING TIMES OF LOW FLOW. • APPROPRIATELY SIZED EQUIPMENT WALL BE UTILIZED TO PREVENT EXCESSIVE COMPACTING AND MINIMIZE CLEARING. • CONSTRUCTION SCHEDULING AND STAGING WLL BE TIMED TO MINIMIZE THE AMOUNT OF TIME SPENT WORKING IN THE STREAM CHANNEL. SILT FENCE PRIOR TO ANY SOIL DISTURBANCE, APPROXIMATELY 500 FEET OF WOVEN 4 OZ. SILT FENCE W TH PREATTACHED METAL OR HARDWOOD STAKES AT 4 FOOT INTERVALS WILL BE INSTALLED ON THE SITE AS INDICATED ON THE ATTACHED PLAN SHEETS AND THE DETAIL BELOW. SILT FENCE WLL BE LOCATED ALONG THE DOWNSTREAM SIDE OF THE STAGING AREAS. AT THE END OF THE PROJECT, WHEN ALL DISTURBED AREAS HAVE BEEN STABILIZED, ALL SILT FENCE WLL BE REMOVED. MATERIAL SPECIFICATIONS INSTALLATION PROCEDURES AND MAINTENANCE SHALL CONFORM TO SECTION 8.62 OF THE NORTH CAROLINA SEDIMENT CONTROL PLANNING AND DESIGN MANUAL, INCLUDING THE CONSTRUCTION DETAIL SITE ACCESS AND STAGING SITE ACCESS WILL BE VIA AN EXISTING HARDENED GRAVEL DRIVE OFF OF LINVILLE FALL HIGHWAY, AS NOTED WITHIN THE ENGINEERING PLANS. ACCESS WTHIN THE PROJECT WILL UTILIZE EXISTING DIRT AND GRAVEL ROADS. TWO STAGING AREAS FOR EQUIPMENT AND MATERIALS WILL BE CREATED WITHIN AREAS THAT ARE CURRENTLY UNVEGETATED. ONE STAGING AREA WLL BE LOCATED NEAR THE UPSTREAM END OF THE PROJECT; THE OTHER WLL BE NEAR THE DOWNSTREAM END. BOTH WLL BE WHOLLY LOCATED OUTSIDE OF THE TROUT roads. SILT FENCE WILL BE INSTALLED ALONG THE DOWNSTREAM EDGES OF EACH STAGINGAREA STREAMBANK MATTING NORTH AMERICAN GREEN C1258N (OR EQUIVALENT) MATTING WILL BE USED ALONG NEWLY GRADED STREAM BANK SECTIONS. MATTING WILL NOT CONTAIN SYNTHETIC (PLASTIC) MATERIALS. MATTING WILL BE INSTALLED BEGINNING AT THE TOE OF STREAMBANK TO THE TOP OF THE BANK AND WILL EXTEND ABOVE THE TOP OF BANK BY A MINIMUM OF ONE FOOT. THE UPPER EDGE OF MATTING WILL BE TRENCHED IN AND STAKED AS SPECIFIED IN THE PLANS. A COMBINATION OF 12 -INCH AND 24 -INCH WOODEN STAKES WILL BE USED TO SECURE THE MATTING IN PLACE. DUSTCONTROL EXPOSED SOILS ON LEVEL SURFACES WILL BE KEPT MOIST DURING DRY CONDITIONS TO MINIMIZE THE POTENTIAL FOR WIND EROSION AND DUST ACCUMULATION. STORMWATER THE RIVER RESTORATION PROJECT WILL NOT CREATE ADDITIONAL POINT SOURCES OF STORMWATER. THE INTENT OF THE PROJECT IS TO IMPROVE OVERALL WATER QUALITY IN THE LINVILLE RIVER BY STABILIZING ERODING STREAMBANKS, PROVIDING FLOODPLAIN STORAGE, AND PROMOTING APPROPRIATE RIPARIAN VEGETATION. ALL CONSTRUCTION ACTIVITIES WILL CONFORM TO NORTH CAROLINA GENERAL STORMWATER PERMIT NCG 10000. SPECIFICALLY: • SOIL STABILIZATION SHALL BE ACHIEVED ON ANY AREA OF A SITE WHERE LAND -DISTURBING ACTIVITIES HAVE TEMPORARILY OR PERMANENTLY CEASED ACCORDING TO THE FOLLOWING SCHEDULE: 0 ALL PERIMETER DIKES, SWALES, DITCHES, PERIMETER SLOPES AND ALL SLOPES STEEPER THAN 3 HORIZONTAL TO 1 VERTICAL (3: 1) SHALL BE PROVIDED TEMPORARY OR PERMANENT STABILIZATION W TH GROUND COVER AS SOON AS PRACTICABLE BUT IN ANY EVENT WITHIN 7 CALENDAR DAYS FROM THE LAST LAND -DISTURBING ACTIVITY. • ALL OTHER DISTURBED AREAS SHALL BE PROVIDED TEMPORARY OR PERMANENT STABILIZATION WITH GROUND COVER AS SOON AS TOTAL LOD = 9.88 AC PRACTICABLE BUT IN ANY EVENT WITHIN 14 CALENDAR DAYS FROM THE LAST LAND -DISTURBING ACTIVITY. ALL INSPECTION AND REPORTING WALL CONFORM TO NORTH CAROLINA GENERAL STORMWATER PERMIT NCG 010000. SPECIFICALLY, MINIMUM SELF -INSPECTION AND REPORTING REQUIREMENTS ARE AS FOLLOWS: A A RAIN GAUGE SHALL BE MAINTAINED IN GOOD WORKING ORDER ON THE SITE. 8, A WRITTEN RECORD OF THE DAILY RAINFALL AMOUNTS SHALL BE RETAINED AND ALL RECORDS SHALL BE MADE AVAILABLE TO DIVISION OF WATER QUALITY OR AUTHORIZED AGENT UPON REQUEST. IF NO DAILY RAIN GAUGE OBSERVATIONS ARE MADE DURING WEEKEND OR HOLIDAY PERIODS AND NO INDIVIDUAL -DAY RAINFALL INFORMATION IS AVAILABLE, THE CUMULATIVE RAIN MEASUREMENT FOR THOSE UNATTENDED DAYS WILL DETERMINE IF A SITE INSPECTION IS NEEDED. (NOTE: IF NO RAINFALL OCCURRED, THE PERMITTEE MUST RECORD -ZERO'.) C. EROSION AND SEDIMENTATION CONTROL MEASURES SHALL BE INSPECTED TO ENSURE THAT THEY ARE OPERATING CORRECTLY. INSPECTION RECORDS MUST BE MAINTAINED FOR EACH INSPECTION EVENT AND FOR EACH MEASURE. AT A MINIMUM, INSPECTION OF MEASURES MUST OCCUR AT THE FREQUENCY INDICATED I ALL EROSION AND SEDIMENTATION CONTROL MEASURES MUST BE INSPECTED BY OR UNDER THE DIRECTION OF THE PERMITTEE AT LEAST ONCE EVERY SEVEN CALENDAR DAYS, AND II) ALL EROSION AND SEDIMENT CONTROL MEASURES MUST BE INSPECTED BY OR UNDER THE DIRECTION OF THE PERMITTEE WITHIN 24 HOURS AFTER ANY STORM EVENT OF GREATER THAN 0.50 INCHES OF RAIN PER 24 HOUR PERIOD D. INSPECTIONS ARE ONLY REQUIRED TO BE MADE DURING NORMAL BUSINESS HOURS. WHEN ADVERSE WEATHER CONDITIONS WOULD CAUSE THE SAFETY OF THE INSPECTION PERSONNEL TO BE IN JEOPARDY, THE INSPECTION CAN BE DELAYED UNTIL IT IS DEEMED SAFE TO PERFORM THESE DUTIES (TIMES WHEN INSPECTIONS WERE DELAYED BECAUSE OF SAFETY ISSUES SHOULD BE NOTED IN THE INSPECTION RECORD.) IF THE INSPECTION CANNOT BE DONE ON THAT DAY, IT MUST BE COMPLETED ON THE FOLLOWING BUSINESS DAY. E. TWENTY-FOUR HOUR REPORTING FOR VISIBLE SEDIMENT DEPOSITION: 0 THE PERMITTEE SHALL REPORT TO THE DIVISION OF WATER QUALITY CENTRAL OFFICE OR THE APPROPRIATE REGIONAL OFFICE ANY VISIBLE SEDIMENT BEING DEPOSITED IN ANY STREAM OR WETLAND OR ANY NONCOMPLIANCE WHICH MAY ENDANGER HEALTH OR THE ENVIRONMENT. ANY INFORMATION SHALL BE PROVIDED ORALLY OR ELECTRONICALLY WITHIN 24 HOURS FROM THE TIME THE PERMITTEE BECAME AWARE OF THE CIRCUMSTANCES. II) A WRITTEN SUBMISSION SHALL BE PROVIDED TO THE APPROPRIATE REGIONAL OFFICE OF THE DIVISION OF WATER QUALITY WITHIN 5 DAYS OF THE TIME THE PERMITTEE BECOMES AWARE OF THE CIRCUMSTANCES. THE WRITTEN SUBMISSION SHALL CONTAIN A DESCRIPTION OF THE SEDIMENT DEPOSITION AND ACTIONS TAKEN TO ADDRESS THE CAUSE OF THE DEPOSITION. THE DIVISION OF WATER QUALITY STAFF MAY WAIVE THE REQUIREMENT FOR A WRITTEN REPORT ON A CASE-BY-CASE BASIS. F. RECORDS OF INSPECTIONS MADE DURING THE PREVIOUS 30 DAYS SHALL REMAIN ON THE SITE AND AVAILABLE FOR AGENCY INSPECTORS AT ALL TIMES DURING NORMAL WORKING HOURS, UNLESS THE DIVISION OF WATER QUAIJTY PROVIDES A SITE-SPECIFIC EXEMPTION BASED ON UNIQUE SITE CONDITIONS THAT MAKE THIS REQUIREMENT NOT PRACTICAL. OLDER RECORDS MUST BE MAINTAINED FOR A PERIOD OF THREE YEARS AFTER PROJECT COMPLETION AND MADE AVAILABLE UPON REQUEST THE RECORDS MUST PROVIDE THE DETAILS OF EACH INSPECTION INCLUDING OBSERVATIONS, AND ACTIONS TAKEN IN ACCORDANCE WITH THIS PERMIT. THE PERMITTEE SHALL RECORD THE REQUIRED RAINFALL AND MONITORING OBSERVATIONS ON THE INSPECTION RECORD FORM PROVIDED BY THE DIVISION OR A SIMILAR INSPECTION FORM THAT IS INCLUSIVE OF ALL OF THE ELEMENTS CONTAINED IN THE DIVISIONS FORM. USE OF ELECTRONICALLY -AVAILABLE RECORDS, IN UEU OF THE REQUIRED PAPER COPIES FOR INSPECTION WILL BE ALLOWED IF SHOWN TO PROVIDE EQUAL ACCESS HA AND UTILITY AS THE RD -COPY RECORDS. INSPECTION RECORDS MUST INCLUDE, AT A MINIMUM, THE FOLLOWING: 1) IDENTIFICATION OF THE CONTROL MEASURES INSPECTED, 2) DATE AND TIME OF THE INSPECTION, 3) NAME OF THE PERSON PERFORMING THE INSPECTION, 4) INDICATION OF WHETHER THE MEASURES WERE OPERATING PROPERLY, 5) DESCRIPTION OF MAINTENANCE NEEDS FOR THE MEASURE, B) CORRECTIVE ACTIONS TAKEN (7) DATE OF ACTIONS TAKEN, AS WELL AS THE LATE AND AMOUNTS OF RAINFALL RECEIVED. 11) VISIBLE SEDIMENTATION FOUND OUTSIDE THE SITE LIMITS: INSPECTION RECORDS MUST INCLUDE: 1) AN EXPLANATION AS TO THE ACTIONS TAKEN TO CONTROL JV I I /\ GVV I I J1/-�VIIYV /'ll\LIQ WITH SILT FENCE ON RIVER SIDE USE EXISTING GRAVEL DRIVE FOR ACCESS TO STAGING AREAS AND RIVER SITE ACCESS PROVIDED BY EXISTING GRAVEL DRIVE OFF LINVILLE FALLS HIGHWAY FUTURE RELEASES, 2) ACTIONS TAKEN TO CLEAN UP OR STABILIZE THE SEDIMENT THAT HAS LEFT THE SITE LIMITS AND 3) THE DATE OF ACTIONS TAKEN. III) VISIBLE SEDIMENTATION FOUND IN STREAMS OR WETLANDS: ALL INSPECTIONS SHOULD INCLUDE EVALUATION OF STREAMS OR WETLANDS ONSITE OR OFFSITE (WHERE ACCESSIBLE) TO DETERMINE IF VISIBLE SEDIMENTATION HAS OCCURRED. IF THE DISCHARGE FROM A SITE RESULTS IN AN INCREASE IN VISIBLE STREAM TURBIDITY, INSPECTION RECORDS MUST RECORD THAT EVIDENCE AND ACTIONS TAKEN TO REDUCE SEDIMENT CONTRIBUTIONS.'CLEAN' STORMWATER RUNNING ONTO THE PROJECT SITE FROM SURROUNDING UNDISTURBED AREAS WILL BE HANDLED USING THE FOLLOW NG APPROACHES: • WRING WORK IN AND NEAR THE CHANNEL, TEMPORARY DIVERSIONS WILL BE INSTALLED AS SITE CONDITIONS REQUIRE TO PREVENT STORMWATER FROM ENTERING UNSTABILIZED CONSTRUCTION AREAIS WE TO IRREGULAR TOPOGRAPHY, MATURE FORESTED VEGETATION, AND MULTIPLE EXISTING RECEIVING WATERS, THE AREA THAT COULD CONTRIBUTE STORMWATER TO THE PROJECT SITE IS AREAS AS A RESULT, TEMPORARY DIVERSIONS WILL NOT BE REQUIRED AROUND THE ENTIRE SITE. HOWEVER, WHEN THE POTENTIAL EXISTS FOR'CLEAN' STORMWATER TO RUN ON TO AN AREA OF ACTIVE CONSTRUCTION, A TEMPORARY DIVERSION WILL BE CONSTRUCTED AT AN APPROPRIATE LOCATION. • TEMPORARY DIVERSIONS SHALL CONSIST OF A TEMPORARY EARTHEN DIVERSION DIKE, BUILT TO SPECIFICATIONS IN SECTION 8.20 OF THE NORTH CAROLINA SEDIMENT CONTROL PUNNING AND DESIGN MANUAL, INCLUDING THE CONSTRUCTION DETAIL BELOW'CLEAN' STORMWATER DIVERTED BY THE DIKE SHALL BE ROUTED TO A STABLE AREA OF THE LINVILLE RIVER ORA TRIBUTARY, AS APPROPRIATE AS PART OF FINAL GRADING, THE DIVERSION DIKE WILL BE REMOVED AND GRADED. TO FINAL DESIGN CONTOURS, THEN STABILIZED WITH VEGETATION. SOLID WASTE IT IS NOT ANTICIPATED THAT EXCAVATION FOR THIS PROJECT WILL UNEARTH ANY SOLID WASTE. IN THE CASE THAT ANY SOLID WASTE IS INADVERTENTLY EXCAVATED, THE FOLLOWING PROCEDURES WILL BE FOLLOWED: • STOCKPILE SOLID WASTE OUTSIDE OF TROUT BUFFER. • INSTALL SEDIMENT FENCE AROUND TEMPORARY STOCKPILE AS NEEDED TO PREVENT SEDIMENT FROM WASHING OFF OF WASTE AND ENTERING SURROUNDING AREAS. • ARRANGE FOR WASTE DISPOSAL WITHIN 14 CALENDAR DAYS IN ACCORDANCE WITH LOCAL AND SOLID WASTE REGULATIONS. • AVERY COUNTY SANITATION DEPARTMENT: 828-737-5420 • NC DENR SOLID WASTE SECTION: 828-2964702 • REMOVE SILT FENCE AND GRADE ALL AREAS TO FINAL DESIGN. MAINTENANCE OF E&SC MEASURES ALL EROSION CONTROL AND SEDIMENTATION MEASURES WILL BE INSPECTED DAILY AND AFTER SIGNIFICANT RAIN EVENTS BY THE ON SITE ENGINEER AND THE CONTRACTOR. THE CONTRACTOR WLL ASSURE THAT ALL INSTALLATIONS ARE FUNCTIONING PROPERLY AT THE END OF EACH WORK DAY. INSPECTION REQUIREMENTS, AS DETAILED IN THE STORMWATER SECTION, WLL BE FOLLOWED. ONCE THE SITE IS STABILIZED, ALL NON -BIODEGRADABLE EROSION CONTROL MEASURES WILL BE REMOVED AND PROPERLY DISPOSED OF BY THE CONTRACTOR. 20 FT WIDE ACCESS PATH TEMPORARY SILT FENCE PER SECTION 6.62 OF THE NORTH CAROLINA SEDIMENT CONTROL PLANNING AND DESIGN MANUAL Comp -led sod Flow _ 16' min =1 �II!_II II il— � —HHRH 6' 'Ywal —y TEMPORARY DIVERSION PER SECTION 6.20 OF THE NORTH CAROLINA SEDIMENT CONTROL PLANNING AND DESIGN MANUAL (V O O 2UwZ� Q j r� w w W - i 1n w w �a �U� , �ZwUJ JId O Z J � I.L. a D_ Z zo �w J LLI O o6 Z (D cn �Q w 0 _. W O' z Zw tnZ� Z_ZA O Z>i Zza • �. o ,00 AO FM . SCALE: 1" = 100' RIVERBANK AND RIPARIAN PLANTING SPECIFICATIONS 4, MOUNTAIN ALLUVIAL FOREST - LIVE STAKES, BARE ROOT STOCK, CONTAINERIZED PLANTS OR TRANSPLANTS - 3.7 AC SCIENTIFIC NAME COMMON NAME 0 SPACING OTY Salix sericea �. o ,00 AO FM . SCALE: 1" = 100' RIVERBANK AND RIPARIAN PLANTING SPECIFICATIONS TEMPORARY SEEDING, MULCHING AND SOIL PREP - 5.2 AC MOUNTAIN ALLUVIAL FOREST - LIVE STAKES, BARE ROOT STOCK, CONTAINERIZED PLANTS OR TRANSPLANTS - 3.7 AC SCIENTIFIC NAME COMMON NAME SIZE (CAL) SPACING OTY Salix sericea SILKY WILLOW 0.25" - 1.0" 611.4 650 Cephalanthus occidentalis BUTTON BUSH 0.5011-1.01, 6 FT - 8 FT O.C. 650 Sambucus nigra ssp. canadensis ELDERBERRY 0.25" - 1.0" 6 FT - 8 FT O.C. 650 Ainus serrulata TAG ALDER 0.25" - 1.0" 6 FT - 8 FT O.C. 650 Comus amomum SILKY DOGWOOD 0.25" - 1.0" 6 FT - 8 FT O.C. 650 RIVERBANK - LIVE STAKES, BARE ROOT STOCK, CONTAINERIZED PLANTS OR TRANSPLANTS -1.5 AC �. o ,00 AO FM . SCALE: 1" = 100' RIVERBANK AND RIPARIAN PLANTING SPECIFICATIONS TEMPORARY SEEDING, MULCHING AND SOIL PREP - 5.2 AC MOUNTAIN ALLUVIAL FOREST - LIVE STAKES, BARE ROOT STOCK, CONTAINERIZED PLANTS OR TRANSPLANTS - 3.7 AC SCIENTIFIC NAME COMMON NAME SIZE (CAL) SPACING OTY Salix sericea SILKY WILLOW 0.25" - 1.0" 6 FT - 8 FT O.C. 650 Cephalanthus occidentalis BUTTON BUSH 0.5011-1.01, 6 FT - 8 FT O.C. 650 Sambucus nigra ssp. canadensis ELDERBERRY 0.25" - 1.0" 6 FT - 8 FT O.C. 650 Ainus serrulata TAG ALDER 0.25" - 1.0" 6 FT - 8 FT O.C. 650 Comus amomum SILKY DOGWOOD 0.25" - 1.0" 6 FT - 8 FT O.C. 650 RIVERBANK - LIVE STAKES, BARE ROOT STOCK, CONTAINERIZED PLANTS OR TRANSPLANTS -1.5 AC SCIENTIFIC NAME COMMON NAME SIZE (CAL) SPACING QTY Betula nigra Piatanus occidentalis RIVER BIRCH SYCAMORE 0.25" - 1.0" 0.5011-1.01, 3 FT - 5 FT O.C. 3 FT - 5 FT O.C. 650 650 Liriodendron tulipifera TULIP POPLAR 0.25" - 1.0" 3 FT - 5 FT O.C. 650 Fraxinus pennsytvanica GREEN ASH 0.25"- 1.0" 3 FT - 5 FT O.C. 650 Carpinus caroliniana IRONWOOD 0.25" - 1.0" 3 FT - 5 FT O.C. 650 Populus deltoides EASTERN COTTONWOOD 0.25" - 1.0" 3 FT - 5 FT O.C. 650 PERMANENT SEEDING - 5.2 AC SCIENTIFIC NAME COMMON NAME TYPE APP. RATE OTY -- RIPARIAN SEED MIX SEED 175 LBS / AC 910 LBS E/ymus virginicus VIRGINIA WILD RYE SEED 20%. --- Agrost/s perennans AUTUMN BENT GRASS SEED 15% -- Pandcum vlrgatum SWITCHGRASS SEED 15% -- Redbeckia hirta BLACK-EYED SUSAN SEED 10% — Coreopsis /anceo/ata LANCELEAF COREOPSIS SEED 10% -- Andropogon gerardii BIG BLUESTEM SEED 10% -- Juncus effusus SOFT RUSH SEED 10% — — Schizachynum scoparium LITTLE BLUESTEM SEED 5% -- Sorghastrum nutans INDIAN GRASS SEED 5% -- RIVERBANK AND RIPARIAN PLANTING SPECIFICATIONS CONT. TEMPORARY SEEDING, MULCHING AND SOIL PREP - 5.2 AC SCIENTIFIC NAME COMMON NAME TYPE APP. RATE QUANTITY Secale Cereale RYE GRAIN SEED 220 LBS / AC 1,145 LBS --- GROUND AG. LIMESTONE PELLET 2000 LBS / AC 10,400 LBS -- 10-10-10 FERTILIZER PELLET 750 LBS / AC 3,900 LBS —_ WHEAT STRAW MULCH STRAW 4000 LBS / AC 20,800 LBS PLANTING NOTES A. MOUNTAIN ALLUVIAL FOREST PLANTINGS SHALL EXTEND FROM BANKFULL OUT 20 FT OR THE EXCAVATION AND GRADING EXTENTS, WHICHEVER IS GREATER. B. RIVERBANK PLANTINGS SHALL EXTEND FROM INNER BERM TO 1 ROW BEYOND BANKFULL. PLANTING TECHNIQUES A. ENSURE THAT ROOTS ARE STRAIGHTENED AND FACE DOWNWARD. B. CREATE PLANTING AREA FOR EACH PLANT AND EXCAVATE PIT C. PLACE PLANTS IN PIT ENSURING ROOTS ARE FACING COMPLETELY DOWNWARD D. HEEL IN SOIL AROUND PLANT AND PROCEED TO NEXT PLANTING LOCATION E. NEWLY -PLANTED PLANTS NEED TO BE FASTENED TO THE SUBSTRATE FOR THE ESTABLISHMENT OF NEW ROOTS F. ROOTS SHALL BE SPREAD IN THEIR NORMAL POSITION. ALL BROKEN OR FRAYED ROOTS SHALL BE CUT OFF CLEANLY. G. THE DIAMETER OF THE PLANTING HOLES (PITS) FOR EACH PLANT SHOULD BE AT LEAST THREE TIMES THE DIAMETER OF THE ROOT MASS. SCARIFY THE PLANTING PIT PRIOR TO EACH PLANT INSTALLATION. H. SET PLANTS UPRIGHT IN THE CENTER OF THE PIT. THE BOTTOM OF THE ROOT MASS SHOULD BE RESTING ON UNDISTURBED SOIL. I. PLACE BACKFILL AROUND BASE AND SIDES OF ROOT MASS, AND WORK EACH LAYER TO SETTLE BACKFILL AND TO ELIMINATE VOIDS AND AIR POCKETS. WHEN PIT IS APPROXIMATELY 3'3 FULL, WATER THOROUGHLY BEFORE PLACING REMAINDER OF THE BACKFILL. WATER AGAIN AFTER PLACING FINAL LAYER OF BACKFILL. CONTAINER STOCK, LIVE STAKES AND BARE ROOT STOCK A. STOCK SHALL HAVE BEEN GROWN IN A CONTAINER LONG ENOUGH FOR THE ROOT SYSTEM TO HAVE DEVELOPED SUFFICIENTLY TO HOLD ITS SOIL TOGETHER ONCE REMOVED FROM THE CONTAINER. B. CONTAINER PLANTS WILL NEED TO BE WATERED REGULARLY AND PLACED IN SHADY CONDITIONS UNTIL PLANTING OCCURS. C. CUTTINGS SHOULD BE INSTALLED THE SAME DAY THEY ARE CUT. THE STAKE SHOULD BE ORIENTED WITH THE BUDS POINTED UP, AND THE BOTTOM SHOULD BE CUT AT AN ANGLE FOR EASY INSERTION INTO THE GROUND. D. ABOUT FOUR-FIFTHS OF THE LENGTH OF THE STAKE SHOULD BE BELOW GROUND AND ANGLED DOWNSTREAM. AN IRON BAR CAN BE USED TO MAKE A PILOT HOLE TO PREVENT BARK FROM BEING DAMAGED DURING INSTALLATION. PLANT LOCATIONS A. NEW PLANTINGS SHALL BE LOCATED WHERE SHOWN ON PLAN EXCEPT WHERE CHANGES HAVE BEEN MADE BY THE ENGINEER ONSITE. B. NECESSARY ADJUSTMENTS SHALL BE MADE ONLY AFTER APPROVED BY THE OWNER OR ENGINEER. 40(9 - U W Z I — I Q cn w 7ZILIc MoogZ Z IL >gUa13- 9Z r$Zo1— =W g z o_ � a Nz W 0 ♦+ a` O= Z W J e to 12 Z_Z2 Oa ; ZZA W W( �^ 1 w NATIVE RIFFLE DETAILED PLAN NOT TO SCALE NATIVE RIFFLE NOT TO SCALE NOTES 1. THE NATIVE RIFFLE IS A STREAM AND RIVER RESTORATION DESIGN FEATURE THAT INCORPORATES COARSE MATERIAL IN THE CHANNEL BOTTOM THAT WILL NOT BE MOBILIZED UNDER DEFINED FLOW CONDITIONS. REPLACING (OR ADDING TO) THE NATIVE CHANNEL BED MATERIAL WITH LARGER DIAMETER ROCK CREATES A RIFFLE THAT FUNCTIONS AS A RIGID GRADE CONTROL. LARGER ROCK MATERIAL ENHANCES FLOW DIVERSITY AND TURBULENCE UNDER BASE FLOW CONDITIONS, WHICH PROMOTES AQUATIC HABITAT, NUTRIENT PROCESSING AND RE -AERATION OF STREAM FLOW BENEFITING WATER QUALITY. THE Dm, Dm, Dw OR D100 PARTICLES OF THE CONSTRUCTED MAY BE DESIGNED TO RESIST t6KF WHILE ALLOWING SMALLER SUBSTRATE PARTICLES TO BE MOBILIZED AND REPLACED BY UPSTREAM SEDIMENT SEDIMENT SUPPLY. 2. ALL SELECT RIFFLE MATERIAL SHALL BE NATIVE MATERIAL AVAILABLE ONSITE AND MEETS THE THE NA RIFFLE SIZE SPECIFICATIONS. THE ENGINEER MUST APPROVE THE USE OF ALL ONSITE NATIVE MATERIAL. 3. THE GRAVEL AND COBBLE SUBSTRATE USED FOR THIS DESIGN FEATURE SHOULD BE PREFERENTIALLY HARVESTED FROM THE EXISITING CHANNEL AND OTHER DESIGNATED MINING AREAS ONSITE. 4. SORTING AND SIEVING OF THE HARVESTED RIFFLE SUBSTRATE IS INCIDENTAL TO THE CONSTRUCTION OF THIS STRUCTURE. 5. SELECT RIFFLE MATERIAL SHALL HAVE A GRADATION AS DEFINED IN THE TABLE WITHIN THIS DETAIL OR AS APPROVED BY THE ENGINEER. SELECT RIFFLE MATERIAL SHALL BE WELL GRADED WHEN IT IS PLACED IN THE CHANNEL. 6. FOR INSTALLATION, THE CONTRACTOR SHALL OVER EXCAVATE THE LENGTH OF THE RIFFLE, INSTALL 700 GRAM COIR FIBER EROSION CONTROL MATTING, KEY MATTING INTO THE RIFFLE TRENCH AND BACKFILL WITH THE SPECIFIED SELECT RIFFLE MATERIAL TO THE ELEVATIONS SHOWN ON THE PROPOSED PROFILE. 7. CONSTRUCTED RIFFLE MATERIAL SHALL EXTEND A MINIMUM OF 3.0 FT U/S OF THE P.T. INTO THE GLIDE AND D/S TO THE P.C. 8. P.T. AND P.C. STATIONS AND ELEVATIONS ARE INCLUDED IN THE PROPOSED PLAN AND PROFILE SHEETS. 9. SELECT RIFFLE MATERIAL DEPTH SHALL BE AT LEAST 2.5 TIMES THE DIDO (MM) SPECIFIED BY THE ENGINEER. 10. SELECT RIFFLE MATERIAL WILL BE PLACED AT A UNIFORM THICKNESS. 11. THE SELECT RIFFLE MATERIAL WILL BE PLACED SUCH THAT, IN CROSS-SECTION, ITS LOWEST ELEVATION OCCURS IN THE CENTER OF THE CHANNEL AS PER THE DETAIL. 12. SELECT RIFFLE MATERIAL SHALL BE COMPACTED USING TRACK EQUIPMENT OR AN EXCAVATOR BUCKET SUCH THAT FUTURE SETTLEMENT OF THE MATERIAL IS KEPT TO A MINIMUM. 13. THE SURFACE OF THIS STRUCTURE SHALL BE FINISHED TO A SMOOTH AND COMPACT SURFACE IN ACCORDANCE WITH THE LINES, GRADES, AND CROSS-SECTIONS OR ELEVATIONS SHOWN ON THE DRAWINGS. THE DEGREE OF FINISH FOR INVERT ELEVATIONS SHALL BE WITHIN 0.1 FT OF THE GRADES AND ELEVATIONS INDICATED. 14. RE -DRESSING OF CHANNEL AND BANKFULL BENCH/FLOODPLAIN WILL LIKELY BE REQUIRED FOLLOWING INSTALLATION OF IN -STREAM STRUCTURES AND SHALL BE CONSIDERED INCIDENTAL TO CONSTRUCTION. 15. SEE TYPICAL RIFFLE CROSS SECTION FOR DIMENSIONS. BANKFULL P.T. ELEVATION BANKFULL WSE EROSION CONTROL MATTING \ KEY MATTING INTO COIR 700 GRAM PER PROFILE COARSE MATERIAL 8!SEFLOW WSE RIFFLE SLOPEVAR IES PER PROFILE INNER BERM — — _ P.C. ELEVATION PER PROFILE / SELECT RIFFLE SUBSTRATE • / / /��/////%�/((/ j///%/�///////// MATERIAL PER NOTESSELECTRI MATERIAL DEPTH AND GRADATION STREAMBED ION PER NOTES NATIVE RIFFLE DETAILED CROSS-SECTION A - A' NOT TO SCALE RIFFLE MATERIAL MINIML IM DEPTH = 2D' OR 25'D,. NATIVE RIFFLE DETAILED CROSS-SECTION B - B' SELECT NATIVE SUBSTRATE NOT TO SCALE N 0 =UWZ Q� jrLu o QU)w Lu I— 0- TU) , It W (o dwz J Z 0 :5J > Ua `LL Z W C) Of J Z CO SELE( BEHIND NON GEO HIGH DENSI LIVE STAKII SILL STRUCTURE INTO STREAM BANK MIN. 15.0 FT i FLOW WBKF 1BKF jBKF 3BKF BOULDER CROSS -VANE DETAILED PLAN PROPOSED BANKFULL WSE HEADER BOULDER FLOW NON -WOVEN T GEOTEXTILE / FOOTER BOULDER BOULDER CROSS -VANE SECTION A - A' SCOUR POOL 1 BELOW STEP L------- / NOT TO SCALE O O NOT TO SCALE BOULDER CROSS -VANE NOTES 1. THE BOULDER CROSS -VANE IS A DESIGN FEATURE USED TO CONTROL GRADE IN HIGH IN GRADIENT REACHES OR AT CRITICAL JUNCTURES OF THE PROPOSED CHANNEL. THE CROSS -VANE IS ALSO USED TO PROVIDE ENERGY DISSIPATION, REDUCE NEAR BANK STRESS (NBS), AND CREATE A DIVERSITY OF AQUATIC HABITAT THROUGH SCOUR OF THE STREAM BED. THE CROSS -VANE IS COMPOSED OF A BOULDER SILL, WHICH IS A ROW OF BOULDERS SET AT AN ELEVATION PROVIDED IN THE PROPOSED PROFILE THAT SPANS PERPENDICULAR TO AND SLIGHTLY ARCED ACROSS THE CHANNEL. THE BOULDER SILL EXTENDS APPROXIMATELY 1/3 OF THE CHANNEL WIDTH IN THE CENTER OF THE CHANNEL. FROM THE EXTENTS OF THE SILL BOULDERS, TWO VANE ARMS EXTEND UP AND TOWARDS THE STREAM BANK, EVENTUALLY KEYING INTO THE BANK AT AN ELEVATION HIGHER THAN THE SILL BOULDERS. 2. ALL BOULDERS USED FOR THE OFFSET BOULDER STEP SHALL BE STRUCTURAL STONE, CUBICAL OR RECTANGULAR IN SHAPE. THE ENGINEER MUST APPROVE THE USE OF BOULDERS THAT MAY BE AVAILABLE ONSITE. 3. DIMENSIONS AND SLOPES OF STRUCTURES DESCRIBED IN THE DETAIL MAY BE ADJUSTED BY DESIGN ENGINEER TO FIT CONDITIONS ONSITE. 4. CONTRACTOR WILL BE REQUIRED TO FIT BOULDERS TOGETHER TIGHTLY. 5. GAPS BETWEEN BOULDERS SHALL BE MINIMIZED BY FITTING BOULDERS TOGETHER AND PLUGGING WITH NC DOT CLASS A AND SELECT MATERIAL OR CHINKING STONE APPROVED BY DESIGN ENGINEER, AND LINING WITH FILTER FABRIC. 6. THERE SHALL BE NO DROP GREATER THAN 0.5 FT OVER A SINGLE STEP. BOULDERS SHALL BE 3 FT X 4 FT X 2 FT +/- 0.5 FT. 7. NON -WOVEN GEOTEXTILE SHALL BE PLACED ON THE UPSTREAM SIDE OF THE STRUCTURE TO PREVENT WASHOUT OF SEDIMENT THROUGH BOULDER GAPS. FILTER FABRIC SHALL EXTEND FROM THE BOTTOM OF THE FOOTER BOULDER TO THE FINISHED GRADE ELEVATION AND SHALL BE PLACED THE ENTIRE LENGTH OF THE STRUCTURE. KEY BOULDERS INTO STREAM BANK MINIMUM 15.0 FT. KEY BOULDERS INTO STREAM BANK @ 1/3 BKF STAGE PROPOSED BANKFULL WSE ARM SLOPE = 2 4% BOULDER CROSS -VANE CROSS-SECTION PLACE BOULDERS INTO STREAMBED A MINIMUM OF THE BOULDER DIAMETER NOT TO SCALE c,j O (7 2UwZ Q j w r W W W w Q W W wc� �ZWU) W Wowz Q ��Wgw> a �U) z z o U JWC 0 CD 0 Z U Z w 1 FLOW BOULDER J -HOOK WBKF NOTES 3BKF 3BKF 3BKF THE BOULDER J -HOOK IS A DESIGN FEATURE USED TO CONTROL GRADE IN HIGH IN GRADIENT REACHES OR AT CRITICAL JUNCTURES OF THE PROPOSED CHANNEL.THIS STRUCTURE WILL ALSO ENCOURAGE POOL MAINTENANCE cam, AND CREATE A DIVERSITY OF AQUATIC HABITAT THROUGH SCOUR OF THE RIVER BED. THE BOULDER J -HOOK IS SELECT BACKFILL< _ t EXTEND BOULDER SILL INTO COMPOSED BEHIND STRUCTURE a a � POSED STREAMBANK MIN 15.0 FT PROFILE THAT SPANS PANS PERPENDIA BOULDER SILL,CULAR TO AND SLIGHTLY ARCED ACROSS THE CHANNEL. ICH IS A ROW OF BOULDERS SET AT AN ELEVATION THE OUOVIDED NDER SITHE LLEXTENDSr` O >e O O O EXTENDS FROM A BOULDER VANE ARM INTO THE OPPOSITE STREAMBANK. THE BOULDER VANE ARM EXTENDS UP AND NON -WOVEN __ o TOWARDS THE OUTSIDE STREAM BANK, EVENTUALLY KEYING INTO THE BANK AT AN ELEVATION HIGHER THAN THE SILL GEOTEXTILE ° 0 BOULDERS. 0 1. ALL BOULDERS USED FOR THE OFFSET BOULDER STEP SHALL BE STRUCTURAL STONE, CUBICAL OR RECTANGULAR O 0 IN SHAPE. THE ENGINEER MUST APPROVE THE USE OF BOULDERS THAT MAY BE AVAILABLE ONSITE. 0 2. DIMENSIONS AND SLOPES OF STRUCTURES DESCRIBED IN THE DETAIL MAY BE ADJUSTED BY DESIGN ENGINEER TO HIGH DENSITY o FIT CONDITIONS ONSITE. LIVE STAKING o 0 " 0 0 3. CONTRACTOR WILL BE REQUIRED TO FIT BOULDERS TOGETHER TIGHTLY. / 4. GAPS BETWEEN BOULDERS SHALL BE MINIMIZED BY FITTING BOULDERS TOGETHER AND PLUGGING WITH NC DOT 0 O 0 CLASS A AND SELECT MATERIAL OR CHINKING STONE APPROVED BY DESIGN ENGINEER, AND LINING WITH FILTER SCOUR FABRIC. SILL STRUCTURE 0 POOL 5. THERE SHALL BE NO DROP GREATER THAN 0.5 FT OVER A SINGLE STEP. BOULDERS SHALL BE 3 FT X 4 FT X 2 FT INTO STREAM BANK O O MIN. 15.0 FT o -HIGH DENSITY 0.5 FT. o LIVE STAKING 6. NON -WOVEN GEOTEXTILE SHALL BE PLACED ON THE UPSTREAM SIDE OF THE STRUCTURE TO PREVENT WASHOUT OF SEDIMENT THROUGH BOULDER GAPS. FILTER FABRIC SHALL EXTEND FROM THE BOTTOM OF THE FOOTER '0 BOULDER TO THE FINISHED GRADE ELEVATION AND SHALL BE PLACED THE ENTIRE LENGTH OF THE STRUCTURE. / o o 0 O O 0 O A BANKFULL--___­�' BOULDER J -HOOK NOT TO SCALE DETAILED PLAN PROPOSED BANKFULL WSE HEADER - BOULDER FLOW — SCOUR POOL • / ; BELOW STEP NON -WOVEN _ �------- ---- GEOTEXTILE / BFOOTER OULDER BOULDER J -HOOK SECTION A - A' NOT TO SCALE KEY BOULDERS INTO STREAM BANK MINIMUM 15.0 FT. KEY BOULDERS INTO STREAM BANK @ 1/3 BKF STAGE PROPOSED BANKFULL WSE ARM SLOPE = 2 -4%/ — — — — — — — — — — — — — �— BOULDER J -HOOK CROSS-SECTION PLACE BOULDERS INTO STREAMBED A MINIMUM OF THE BOULDER DIAMETER NOT TO SCALE cm 0 0 = O W z Q� Or w Q � W U d Y fr Z w (1)p wdpZ = J Z 0 a i� z zo w J Z to O m Z W do -t,��'yssyoJ X02 �z d v: g U w O i 2 BURY LOGS IN STREAMBA MIN. 15.0 BANKFULL SELECT BACKFIL BEHIND STRUCTUF NON-WOVEI\ GEOTEXTILE BURY LOGS IN STREAMBAI MIN. 15.0 HIGH DENSITY— LIVE STAKING f FLOW WBKF 3 BKF 3 BKF 1 3 BKF LOG J -HOOK WITH BOULDERS NOTES rT APS BETWEEN JDLERS LOG J -HOOK WITH BOULDERS DETAILED PLAN PROPOSED BANKFULL WSE HEADER BOULDER NON -WOVEN GEOTEXTILE FOOTER BOULDER LOG J -HOOK WITH BOULDERS SECTION A - A' 1. THE LOG J -HOOK WITH BOULDERS IS A DESIGN FEATURE USED TO PROVIDE ENERGY DISSIPATION, FLOW DIRECTION CONTROL AND TO REDUCE NEAR BANK STRESS. THIS STRUCTURE WILL ALSO ENCOURAGE POOL MAINTENANCE AND CREATE A DIVERSITY OF AQUATIC HABITAT THROUGH SCOUR OF THE RIVER BED. THE LOG EXTEND BOULDER SILL INTO J -HOOK WITH BOULDERS IS COMPOSED OF A BOULDER SILL, WHICH IS A ROW OF BOULDERS SET AT AN ELEVATION STREAMBANK MIN 15.0 FT PROVIDED IN THE PROPOSED PROFILE THAT SPANS PERPENDICULAR TO AND SLIGHTLY ARCED ACROSS THE CHANNEL. THE BOULDER SILL EXTENDS EXTENDS FROM A LOG VANE ARM INTO THE OPPOSITE STREAMBANK. THE LOG VANE ARM EXTENDS UP AND TOWARDS THE OUTSIDE STREAM BANK, EVENTUALLY KEYING INTO THE BANK AT o AN ELEVATION HIGHER THAN THE SILL BOULDERS. 2. ALL BOULDERS USED FOR THE BOULDER SILL SHALL BE STRUCTURAL STONE, CUBICAL OR RECTANGULAR IN SHAPE. BOULDERS AVAILABLE ONSITE MAY BE USED IF APPROVED BY THE ENGINEER. °0 3. DIMENSIONS AND SLOPES OF STRUCTURES DESCRIBED IN THE DETAIL MAY BE ADJUSTED BY DESIGN ENGINEER TO FIT CONDITIONS ONSITE. 0 0 4. CONTRACTOR WILL BE REQUIRED TO FIT LOGS AND BOULDERS TOGETHER TIGHTLY. ALL LOGS AND BOULDERS SHALL BE INSTALLED WITH FOOTERS. 5. HEADER BOULDERS SHALL HAVE 2.0 FT - 3.0 FT GAPS BETWEEN EACH BOULDER TO MAINTAIN SEDIMENT TRANSPORT FUNCTIONS AND FISH PASSAGE. 6. GAPS BETWEEN LOGS AND FOOTER BOULDERS SHALL BE MINIMIZED BY FITTING BOULDERS TOGETHER AND PLUGGING WITH NC DOT CLASS A, WOODY DEBRIS AND SELECT MATERIAL OR CHINKING STONE APPROVED BY DESIGN ENGINEER, AND LINING WITH FILTER FABRIC. 7. THE LOG VANE SHALL EXTEND INTO THE OUTSIDE STREAMBANK AND STREAMBED A MINIMUM OF 15.0 FT ON EACH END. 8. THE BOULDER SILL SHALL EXTEND A MINIMUM OF 15.0 FT INTO THE INSIDE STREAM BANK. 9. BOULDERS SHALL BE 3.0 FT X 4.0 FT X 2.0 FT +/- 0.5 FT. MINIMUM LOG DIAMETER IS 2.0 FT. 10. NON -WOVEN GEOTEXTILE SHALL BE PLACED ON THE UPSTREAM SIDE OF THE STRUCTURE TO PREVENT WASHOUT OF SEDIMENT THROUGH FOOTER BOULDER GAPS. FILTER FABRIC SHALL EXTEND FROM THE BOTTOM OF THE FOOTER BOULDER TO THE FINISHED GRADE ELEVATION AND SHALL BE PLACED THE ENTIRE LENGTH OF THE STRUCTURE. -SCOUR POOL BELOW STEP NOT TO SCALE NOT TO SCALE HEADER LOG EXTEND LOG INTO STREAMBANK MINIMUM 15.0 FT. KEY LOG INTO STREAM BANK @ 3 BKF STAGE PROPOSED BANKFULL WSE LOG SLOPE = 2 mom.-.s.....J...�.__ _ .. 7/ 7// 7/7 7�// �// j// FOOTER LOG PLACE BOULDERS INTO STREAMBED A MINIMUM OF THE BOULDER DIAMETER LOG J -HOOK WITH BOULDERS CROSS-SECTION NOT TO SCALE c-4 O C� U Z < 4zz w � W> w � U W wv,a �ZwU) Y wdwz O _jZOJ O J wa_ z zo o� �wO Z J Z W 7 HIGH DENSITY LIVE STAKING TRANSITION GEOLIFTS INTO RIVER BANK BANKFULL STAGE r r SOIL GEOLIFTSv vA � IJV LI LIVE CUTTINGS BRUSH TOE PROTECTION \� v LAYER OF LIVE -,\v\ BRANCHES (TYP.) BANKFULL STAGE -` /LIFT SETBACK (TYP.) -fes TOE WOOD REVETMENT WITH SOIL GEOLIFT DETAILED PLAN ANCHOR GEOTEXTILE FABRIC IN 6" DEEP TRENCH SOIL BACKFILL (TYP.)_ 2" X 2" X 18" WOOD STAKE (TYP.) UNDISTURBED GROUND OR PREVIOUS FILL EXCAVATION FILL ALL VOIDS WITH FINE WOODY DEBRIS AND GRAVEL LIVE STAKES SPACING = 2.0 FT O.C. TOE WOOD REVETMENT WITH SOIL GEOLIFT DETAILED PROFILE - SECTION A - A' LAYER OF LIVE BRANCHES AND TOPSOIL (TYP.) LIFT HEIGHT= 1.0 FT NOT TO SCALE o+o DIAMETER VARIES (TYP. 1/2' TO 1") LIVE BRANCH 700 GRAM COIR EROSION CONTROL MATTING -SELECT GRAVEL BACK FILL FOR FIRST SOIL LIFT COARSE WOODY DEBRIS APPROX. BASE FLOW WSE FINE WOODY MATERIAL NOT TO SCALE TOE WOOD REVETMENT WITH SOIL GEOLIFT NOTES 1. COARSE WOODY DEBRIS SHALL CONSIST OF LOGS, ROOTWADS, AND LARGE BRANCHES NOT SUITABLE FOR CONSTRUCTION OF LOG STRUCTURES. ALL MATERIALS ARE TO BE APPROVED BY THE ENGINEER. 2. COARSE WOODY DEBRIS SHALL BE CONSTRUCTED WITH THE LARGEST MATERIAL PLACED FIRST. NO LOGS SHALL BE PLACED PARALLEL TO THE FLOW OF WATER, UNLESS DIRECTED BY THE ENGINEER. LOGS SHALL BE PLACED IN A CROSSING PATTERN OR WEAVE SUCH THAT EACH LOG IS ANCHORED BY ANOTHER LOG. 3. SMALL/FINE WOODY DEBRIS SHALL CONSIST OF MEDIUM TO SMALL LIMBS, BRANCHES, BUSHES, AND/OR LOGS. INVASIVE SPECIES SHALL NOT BE USED. 4. SMALL/FINE WOODY DEBRIS SHALL BE PLACED ABOVE THE COARSE WOODY DEBRIS WITH THE LARGEST MATERIAL BEING PLACED FIRST AND THE SMALLEST MATERIAL PLACED LAST. 5. ALL WOODY DEBRIS SHALL BE COMPACTED WITH THE EXCAVATOR BUCKET IN ORDER TO REDUCE THE PRESENCE OF VOIDS IN THE SMALL/FINE WOODY DEBRIS LAYER. 6. THE HORIZONTAL LOCATIONS OF ALL WOODY DEBRIS ARE LOCATED ON THE PLAN AND PROFILE SHEETS AND WILL BE PROVIDED TO THE CONTRACTOR AS A 2004 FORMAT DWG FILE AND LN3 FILE. NO LOCATIONS OF WOODY DEBRIS SHALL VARY FROM THE PLAN LOCATIONS WITHOUT DIRECTION FROM THE ENGINEER. 7. GRAVEL LEVELING BASE SHALL BE INSTALLED ABOVE THE HIGHEST ELEVATION OF THE WOODY DEBRIS BEFORE THE SOIL LIFTS ARE INSTALLED. 8. THE SOIL BACKFILL USED FOR LIFTS AND TOPSOIL USED FOR LAYERING WITH THE LIVE BRANCHES SHALL BE FREE OF ANY LARGE ROOTS OR WOODY DEBRIS AND SHALL GENERALLY BE FREE FROM ANY GRAVEL OR COBBLE MATERIAL. 9. SOIL BACKFILL SHALL BE COMPACTED SUCH THAT FUTURE SETTLING WILL BE KEPT TO A MINIMUM; YET, NOT SUCH THAT THE UNDERLYING BRUSH IS DISPLACED OR DAMAGED. 10. THE TOP OF THE BACKFILL FOR THE FIRST LIFT SHALL BE SLOPED AT APPROXIMATELY 5% AWAY FROM THE STREAM. 11. PLACE A LAYER OF TOPSOIL AND LIVE BRANCHES ON TOP OF EACH SOIL LIFT SUCH THAT APPROXIMATELY 6 INCHES TO 1 FOOT OF EACH LIVE BRANCH WILL BE EXPOSED AND THE REMAINDER (2' TO 4') OF EACH LIVE BRANCH WILL BE COVERED BY THE NEXT SOIL LIFT. 12. LIVE BRANCHES SHALL BE OF THE SPECIES SPECIFIED FOR LIVE STAKES OR APPROVED BY THE ENGINEER. 13. PLACE A LAYER OF 6.5 FEET WIDE GEOCOIR DEKOWE 700 EROSION CONTROL BLANKET, OR EQUIVALENT, ON TOP OF THE TOPSOIL AND LIVE BRANCHES SUCH THAT 2.5 FEET OF THE BLANKET WILL BE BURIED BELOW THE NEXT SOIL LIFT. ALLOW THE REMAINING 4.5 FEET OF BLANKET TO HANG OVER THE PRECEDING SOIL LIFT OR COIR FIBER LOGS. 14. PLACE A LAYER OF 6.5 FEET WIDE NON -WOVEN COIR MATTING OVER THE EROSION CONTROL BLANKET TO THE SAME LIMITS. 15. SOIL CAN BE COMPACTED BY STACKING A PIECE OF 2 X 6 SAWN LUMBER EDGEWAYS UP TO THE LIFT HEIGHT SPECIFIED IN THE STRUCTURE TABLE AND SECURING WITH WOODEN STAKES TO PROVIDE A RIGID BACKSTOP FOR COMPACTING SOIL LIFT. 16. PLACE SOIL BACKFILL UP TO THE LIFT HEIGHT SPECIFIED OF NO GREATER THAN 1.0 FT BEING CAREFUL NOT TO PUSH/PULL OR TEAR THE FABRIC PREVIOUSLY PLACED. 17. THE TOP OF THE SOIL BACKFILL SHALL BE FLAT WITHIN THE LIFT SETBACK DISTANCE SPECIFIED IN THE STRUCTURE TABLE. BEYOND THE LIFT SETBACK DISTANCE, THE SOIL BACKFILL SHALL BE SLOPED AT AN APPROXIMATE 5% SLOPE AWAY FROM THE STREAM - 18. TOP DRESS THE SOIL LIFT WITH TOPSOIL FROM THE FACE OF THE SOIL LIFT BACK INTO THE FLOODPLAIN AT LEAST 4FT. 19. REMOVE THE SAWN LUMBER AND WOODEN STAKES FROM THE FACE OF THE SOIL LIFT AND WRAP THE FACE AND TOP OF THE SOIL LIFT USING THE WOVEN AND NON -WOVEN COIR MATTING HANGING OVER THE PREVIOUS LIFT/COIR FIBER LOGS. 20. THE EROSION CONTROL FABRIC SHALL BE PULLED AS TIGHT AS POSSIBLE WITHOUT TEARING OR EXCESSIVELY DISTORTING THE FABRIC. 21. SECURE THE EROSION CONTROL AND NON -WOVEN MATTING IN PLACE BY STAKING THE END OF THE EROSION CONTROL FABRIC WITH WOODEN STAKES ON 1.5 -FOOT CENTERS. 22. BEGIN CONSTRUCTION OF THE NEXT SOIL LIFT BY REPEATING THE PREVIOUS NOTES STARTING WITH NOTE 11. 23. THE OVERALL SLOPE CREATED BY THE LIVE BRUSH LAYERING SHALL MATCH THE PROPOSED CROSS SECTION SHAPE FOR THE OUTER BANK OF THE THE TYPICAL POOL CROSS-SECTION FOR EACH REACH. 24. THE COIR BLANKETS AND GEOTEXTILE FABRIC USED FOR THE UPPER MOST SOIL LIFT WILL BE SECURED WITHIN A 6 INCH DEEP TRENCH AS SHOWN IN DETAIL. TRENCH AS SHOWN IN THE DETAIL. 25. THE SURFACE OF THIS STRUCTURE SHALL BE FINISHED TO A SMOOTH AND COMPACT SURFACE IN ACCORDANCE WITH THE LINES, GRADES, AND CROSS-SECTIONS OR ELEVATIONS SHOWN ON THE DRAWINGS. THE DEGREE OF FINISH FOR ELEVATIONS SHALL BE WITHIN 0.1 FT OF THE GRADES AND ELEVATIONS INDICATED OR APPROVED BY THE ENGINEER. 26. RE -DRESSING OF CHANNEL AND BANKFULL BENCH/FLOODPLAIN WILL LIKELY BE REQUIRED FOLLOWING INSTALLATION OF IN -STREAM STRUCTURES AND SHALL BE CONSIDERED INCIDENTAL TO CONSTRUCTION. cv O Q =UwZ =n C) >1 w � >w� 0QUU))w > 0 u) z W p w Z O �z�a 'O Z Z o W _jwz O A EROSION CONTROL MATTING DETAILED PLAN I 6" MIN. HORIZONTAL OVERLAP 6" MIN. HORIZONTAL— OVERLAP 6" MIN. VERTICAL OVERLAP 2' (TMP) ■ ■ ■ ■ ■ ■ ■ a O ■ O N N � 2.5' (TMP) _■ ■ ■ O N ■ O O ■ ■ ■ ■ ■ ■ EROSION CONTROL MATTING DETAILED STAKING PLAN EROSION CONTROL MATTING NOTES 1. EROSION CONTROL MATTING IS USED TO PROTECT RECENTLY A' CONSTRUCTED STREAM BANKS FROM EROSION. THE MATTING WILL REMAIN INTACT WHILE THE BANK AND RIPARIAN VEGETATION MATURES, PROVIDING CRITICAL BANK PROTECTION. 2. BEFORE INSTALLING COIR FIBER BLANKET, RAKE SOIL LEVEL AND ADD SEED, FERTILIZER, LIME AND MULCH. 3. 700 GRAM COIR FIBER EROSION CONTROL MATTING SHALL BE PLACED ALONG THE LENGTH OF THE NEW CHANNEL FROM THE TOE OF SLOPE OUT TO A MINIMUM OF 3 FT BEYOND THE BANKFULL ELEVATION. 4. SECURE COIR MATTING IN PLACE BY STAKING AND OVERLAPPING AT THE SEEMS WITH A SHINGLE -TYPE METHOD SUCH THAT THE OVERLAPPING PIECE IS IN THE SAME DIRECTION AND AS THE STREAM FLOW. ADDITIONAL STAKING SHALL BE APPLIED BY THE CONTRACTOR AT NO ADDITIONAL COST IF THE MATTING SEPARATES FROM THE SOIL MORE THAN ONE INCH UNDER A REASONABLE PULL. NOT TO SCALE SUPPLEMENT WOODEN STAKES WITH 12" ECO -STAKES _-700 GRAM COIR FIBER MATTING 2' LONG 2" x 2" WOOD STAKES w/ 3" GALVANIZED ROOFING NAIL AT THE TOP TO SECURE MATTING 700 GRAM COIR MATTING 3' EARTH L LVIYVL AL VVVIJUolmr\Co w/ 3" GALVANIZED ROOFING NAIL AT THE TOP TO SECURE MATTING NOT TO SCALE EROSION CONTROL MATTING DETAILED CROSS-SECTION A - A' NOT TO SCALE cm o (D 2UwZ tco C) w w www > C) �Zwz oa WZ�a z� z9zo 3a JZ m Z W