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HomeMy WebLinkAbout20061558 Ver 1_401 Application_20060926~- ~ .~v ~ar_A~ ~ ~.a .Q ~~,. STATE of NORTH CAROLINA DEPARTMENT OF TRANSPORTATION MICHAEL F. EASLEY GOVERNOR September 21, 2006 Mr. David Baker, NCDOT Regulatory Project Manager U. S. Army Corps of Engineers 151 Patton Avenue, Room 208 Asheville, NC 28801-2714 O ^n ~ ~F~ ~~>~ r~~osg2a`~~i ~~~~ ~~" sr c~ -~O '9i~~Ty 6,p cy LYNDO T'IPPETT SECRETARY 061558 Subject: Nationwide 14 & NW 33 Permit Application SR 1197 -Camp Branch Road Swain County State Project No. 140.087014 (DWQ Minor Permit Fee $200) Dear Mr. Baker: The North Carolina Department of Transportation (NCDOT) is proposing to widen, grade, and pave SR 1197, Camp Branch Road, in Swain County from SR 1177 for a distance of 2,280 feet. This proposal entails widening and paving the existing gavel road to a standard 18-foot roadway. The proposed improvements of SR 1197 have been identified as necessary maintenance and safety improvements. Funds have been allocated for this project, and NCDOT would like to perform these activities sometime during the 2006-07 paving season. I am sending astraight-line diagram with the proposed erosion control and construction limits along this project. In addition, I am sending a typical section of the road, cross sections, drawings for pipe culvert replacements as well as a marked county map and USGS quad map. We propose to install the new culverts slightly below the existing streambed elevations where bedrock is not encountered to minimize impacts to aquatic habitats and allow the existing stream gradients to remain as unchanged as physically possible. The Natural Heritage Database was checked for records of federally threatened and endangered species. There are no records of threatened or endangered species for Camp Branch or Conley Creek. Additionally, there are no records for the entire Conley Creek watershed. There are records for the Appalachian elktoe (Alasmido~ita rcrveneliana) in the Tuckasegee River near the confluence with Conley Creek. However, this location is approximately five miles from the nearest culvert extension. The impacts from the culvert replacements and channel relocation ti should be minimal. For these reasons, we believe there will be "no effect" on threatened and endangered species. Impacts to historic or cultural resources are not anticipated. If the State Historic Preservation Office (SHPO) and the Office of State Archaeology determines that further investigations are required, NCDOT will conduct the appropriate site investigations and obtain compliance from SHPO prior to project construction. The best management practices will be used to minimize and control sedimentation and erosion on this project. The construction foreman will review all erosion control measures daily to ensure sedimentation and erosion is being effectively controlled. If the planned devices are not functioning as intended, they will be immediately replaced with better devices. The rock silt screens and other erosion control devices will be in place prior to pipe culvert construction and will remain in place until the project is stabilized. Impacts to Waters of the United States Camp Branch and Conley Creek are shown on the USGS topographic maps as perennial streams. These streams have sufficient flow to support fish. The streams have well defined channels with substrate of cobble, gravel and sand. The stream channels lack vegetation. For these reasons, we believe the streams are under the jurisdiction of the U.S. Army Corps of Engineers. In order to construct the project in accordance with our current secondary road standards, it will be necessary to impact waters of the United States in the Little Tennessee River Basin. Specifically, NCDOT is requesting to extend/replace three metal culverts and relocate a section of stream in Camp Branch (DWQ Class C) and place headwalls on an existing culvert in Connelly Creek (DWQ Class C, Tr). Listed below is a summary of the proposed impacts. Site No. Existing Proposed Condition Net Impacts Station Condition Site 1 26 x71 x47 Arch >, 26 x71 x47 Arch 0 extension 0+39 CMP CMP w/ Headwalls Site 2 30' x 48" CMP 40' x 48" CMP 10' extension 10+31 Site 3 41' x 36" CMP 86' x 36" CMP 45' extension 12+59 Site 4 32' x 36" CMP 74' x 36" CMP 42' extension 15+40 Site 5 Stream Relocated Stream 185'Temporary Stream Relocation 10+40 to 12+25 Permanent Stream Impact 971inear feet Temporary Impacts 185 linear feet t Permits Requested NCDOT is hereby requesting authorization under Section 404 of the Clean Water Act to proceed with the construction project outlined above. By copy of this letter, I am asking Mr. David McHenry, Mountain Region Coordinator, of the North Carolina Wildlife Resources Commission (NCWRC) to comment directly to you concerning the 404 Nationwide Permit request. Also, by copy of this letter, I am requesting authorization under Section 401 of the Clean Water Act from the North Carolina Department of Environment and Natural Resources (DENR), Division of Water Quality (DWQ). In addition, I am requesting Mr. McHenry and Mr. Ed Ingle, Roadside Environmental Field Operations Engineer (NCDOT), to comment directly to me concerning this permit request. If you have any questions or need additional information, please contact me at (828) 488-2131. Your early review and consideration will be greatly appreciated. Sincerely ~K G~ onathan L. Woodard, P.E. District Engineer cc: Mr. John Hennessy, DWQ, DENR, Raleigh (seven copies) Mr. Mike Parker, DWQ, DENR, Asheville Mr. David McHenry, Mountain Region Coordinator, NCWRC Mr. J. B. Setzer, P.E., Division Engineer, NCDOT Mr. Mark Davis, Division Environmental Officer, NCDOT Mr. E. L. Ingle, Roadside Environmental Field Operations Engineer, NCDOT Ms. W. H. Roach, County Maintenance Engineer, NCDOT c Office Use Only: Form Version May 2002 20061558 USACE Action ID No. DWQ No. (If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".) I. Processing 1. Check all of the approval(s) requested for this project: ® Section 404 Permit ^ Riparian or Watershed Buffer Rules ^ Section 10 Permit ^ Isolated Wetland Permit from DWQ ® 401 Water Quality Certification 2. Nationwide, Regional or General Permit Number(s) Requested: 14 & 33 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: ^ 4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed for mitigation of impacts (verify availability with NCEEP prior to submittal of PCN), complete section VIII and check here: 5. If your project is located in any of North Carolina's twenty coastal counties (listed on page 4), and the project is within a North Carolina Division of Coastal Management Area of Environmental Concern (see the top of page Z for further details), check here: ^ II. Applicant Information 1. Owner/Applicant Information Name: North Carolina Department of Transportation Mailing Address: 345 Toot Hollow Road Bryson CitX, NC 28713 Attn ~ J L Woodard PE District Engineer Telephone Number:~828L488-2131 Fax Number: (828) 488-3518 E-mail Address: jwoodard~a dot state nc us 2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: N/A Company Affiliation: N/A Mailing Address: N/A Telephone Number: N/A Fax Number: N/A E-mail Address: N/A Page 1 of 9 L. IIL Project Information Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. Name of project: Widen~~rade drain and pave SR 1197 Camp Branch Road in Swain County 2. T.I.P. Project Number or State Project Number (NCDOT Only): 140.087014 3. Property Identification Number (Tax P1N): 4. Location County: Swain Nearest Town: Whittier Subdivision name (include phase/lot number): n/a Directions to site (include road numbers, landmarks, etc.): From Alva take US 74/441 Toward Bryson City Take exit 72 to Whittier and go to SR 1415. Turn left on SR 1415. Follow SR 1415 to SR 1194 Turn Left on SR 1194 and follow it to SR 1193. Turn Riaht on SR 1193 and follow it to SR 1177. Turn Left on SR 1177 and follow it to SR 1197. Turn Right on SR 1197 This is the~roject 5. Site coordinates, if available (UTM or Lat/I,ong): Attached (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 6. Property size (acres): 0.81 acres 7. Nearest body of water (stream/river/sound/ocean/lake): Cam Branch C 8. River Basin: Little Tennesee (Note -this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http~//h2o enr.state.nc.us/admin/maps/.) Page 2 of 9 9. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: Residential woodlands 10. Describe the overall project in detail, including the type of equipment to be used: This_project includes cutting and filling earthwork where needed, replacing old drainage structures that are inadequate maki~ the road safer by changing the road profile, and paving Equipment to be used will be Track Hoes Back Hoes Dump Trucks, Bulldozers, Manual Labor etc. 11. Explain the purpose of the proposed work:- To pave widen the shoulders and improve the alignment of SR 1197 to meet current NCDOT standards. IV. Prior Project History If jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. No additional permits have been applied for in the past V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. No additional permits are anticipated VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a Page 3 of 9 delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. Provide a written description of the proposed impacts: Culvert Extensions, Stream Relocation 2. Individually list wetland impacts below: Wetland Impact Site Number (indicate on ma) Type of Impact* Area of Impact (acres) Located within 100-year Floodplain** (es/no) Distance to Nearest Stream (lineaz feet) Type of Wetland*** N/A * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, sepazately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplam maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online at http://~~ww.fema.gov. *** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond, Cazolina Bay, bog, etc.) Indicate if wetland is isolated (deternunation of isolation to be made by USACE only). List the total acreage (estimated) of all existing wetlands on the property: N/A Total area of wetland impact proposed: N/A 3. Individually list all intermittent and perennial stream impacts below: Stream Impact Site Ntunber (indicate on ma) Type of Impact* Length of Impact (linear feet) Stream Name** Average Width of Stream Before Im ct Perennial or Intermittent? lease ) 1@ Station 0+39 Culvert Extension 0 Connelly Creek 6 Perennial 2 @ Station 10+31 Culvert Extension 10 Camp Branch 4 Perennial 3 @ Station 12+59 Culvert Extension 45 Camp Branch 3 Perennial 4 @ Station 15+40 Culvert Extension 42 Camp Branch 3 Perennial 5 @ 10+40 to Channel Change 185 Camp Branch 3 Perennial " List each impact separately and identify temporary impacts. Impacts include, but aze not limited to: culverts and associated rip-rap, dams (sepazately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. "" Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at Page 4 of 9 rrnrtiv.usas.aov. Several Internet sites also allow direct download and printing of USGS maps (e.g., wrrw.topozone.com, rvrvrv.maquest.com, etc.). Cumulative impacts (linear distance in feet) to all streams on site: 97 4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U. S.) below: Open Water Impact Site Number indicate on ma) Type of Impact* ~~ °f Impact (acres) Name of Waterbody (~ aPPlicable) Type of Waterbody (lake, pond, estuary, sound, ba ,ocean, etc.) N/A ' List each impact separately and identify temporary unpacts. impacts mctnae, out are nog iumiw w. iui, ~r~QYa~..,,., ~~su~s~ flooding, drainage, bulkheads, etc. 5. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): ^ uplands ^ stream ^ wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): N/A Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): N/A Size of watershed draining to pond: N/A Expected pond surface area: N/A VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topogaphy, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. Impacts cannot be avoided Culverts must be extended in order to gain the necessary width to improve SR 1197 to current NCDOT standards All pipe extensions will be placed below the existingLstream bed gradient so natural substrate can be re-established. The stream relocation will be done using, a natural channel design Page 5 of 9 VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on March 9, 2000, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http://h2o.enr.state.nc.us/ncwetlands/strm~ide.html. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. 2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at (919) 715-0476 to determine availability and to request written approval of mitigation prior to submittal of a PCN. For additional information regarding the application process for the NCEEP, check the NCEEP website at http://~vww.nceep.net. If use of the NCEEP is proposed, please check the appropriate box on page three and provide the following information: Amount of stream mitigation requested (linear feet): 97 Amount of buffer mitigation requested (square feet): N/A Amount of Riparian wetland mitigation requested (acres): N/A Page 6 of 9 Amount ofNon-riparian wetland mitigation requested (acres): N/A Amount of Coastal wetland mitigation requested (acres): N/A IX. X. Environmental Documentation (required by DWQ) Does the project involve an expenditure of public (federaUstate) funds or the use of public (federaUstate) land? Yes ® No ^ If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ^ No If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ^ No Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify N/A )? Yes ^ No ® If you answered "yes", provide the following information: Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. Zone* (s Hare feet) Multiplier Mi~~tion 1 3 2 1.5 Total " -Zone 1 extends out 30 feet per~idicular from near bank of channel; Zone 2 extends an additiona120 feet from the edge of Zone 1. Page 7 of 9 If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration /Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0260. XL Stormwater (required by DWQ) Describe impervious acreage (both existing and proposed) versus total acreage on the site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. Stormwater will be diverted throw settling., basins or glass lined buffers prior to entering streams wee erosion control plan) XII. Sewage Disposal (required by DWQ) 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. No wastewater will be generated from the proposed project XIII. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules? Yes ^ No Is this an after-the-fact permit application? Yes ^ No XIV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). Applicant/Agent'~Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 8 of 9 SITE COORDINATES Site 1 Site 4 N 35.372° N 35.369° W 83.344 W 83.349° Site 2 Site 5 N 35.372° N 35.371° W 83.345° W 83.347° Site 3 N 35.370° W 83.349° Page 9 of 9 SWAIN COUNTY EROSION CONTROL PLAN ROAD NAME Camp Branch SR 1197 FROM SR 1177 2280 feet ADDITION M'ROVEMENT YES TO BE PAVED YES R/W WIDTH 45' VERTICAL SCALE 1" = 50' HORIZONTAL SCALE 1" = 25' DATE 3-07-06 EROSION CONTROL PLANS Swain County SR 1197 Camp Branch Description: From SR 1177 Connelly Creek 2280 feet _ ~.~ 1 f 1 ~ Erosion Control Details and Specifications Std # Description S t~bol 1630.03 Temporary Silt Ditch l~ ~!~-- 1630.05 Temporary Diversion .-~ ~ ~~, 1605.01 Temporary Silt Fence ~~~ ~~~ 1622.01 Temporary Slope Drain and Earth Beim T `- `- `- ' 1630.01 Riser Basin 1630.02 Silt Basin Type B ~~~ 1633.01 Temporary Rock Silt Check TS~pe A ~ ~'` > 1633.02 Temporary Rock Silt Check Type B 1634.01 Temporary Rock Sediment Dam Type A ~~ ;='~ ~~ 1634.02 Temporary Rock Sediment Dam Type B - 1635.01 Rock Pipe Inlet Protection Type A SUS 1635.02 Rock Pipe Inlet Protection Type B J= 1636.01 Rock Silt Screen ~-- 1630.04 Stilling Basin `'I 1632.01 Rock Inlet Protection Type A `=, ~ ~='~ . 1632.02 Rock Inlet Protection Type B ~= .,-.- C, 1632.03 Rock Inlet Protection Type C ~ ~-` -- Environmentally Sensitive Area Erosion Control Schedule • Install erosion control measures according to plans in all outlets and at other discharge points after clearing but before grubbing • Clear and clean outfall ditches leaving side slopes at an angle that can be retained by vegetation. These areas will require stage seeding and mulching. • Begin grading of roadway ditches. Place erosion control measures along roadway ditches as grading progresses and conditions allow. • Seed and mulch all disturbed areas as soon as any phase of grading is completed. (Note there are 15 working days/30 calendar days to complete seeding and mulching. A working day is defined as a day exclusive of Saturday or Sunday during which weather conditions or soil conditions permit land-disturbing activity.) • Clean out and/or rework all temporary erosion control measures after any significant rainfall event (or as otherwise needed). These measures should be maintained until a permanent vegetative cover is established. Wet Pipe Installation Schedule • Install erosion control devices. • Remove material and existing pipe while limiting, as much as possible, material and sediment from entering the stream and/or escaping from the project. • Prepare pipe foundation while taking care to limit material and sediment from entering the stream and/or escaping from the project. Where possible new grade should be below the existing streambed. If needed, bedding material will be clean stone (especially in Trout and HQW waters). • Place new pipe and compact fill. • Install slope protection on outlet and inlet ends of pipe. Also complete installation of erosion control measures and perform maintenance as needed on existing measures. • Establish permanent vegetation as soon as possible. a~ ~ ~ ~ ~ ~ U M ~' `~ a~ ~ ~ ~ U O v U '~ N N CMO ~ ~ O ~ ~ ~ O M O N O N r r r ~ N L f0 C ~ N 'O a~°i ~° . ~ ~3 C'1 U ~ o c ~ o o ?~ (n ~ .~ m E w = ~ ~ ~ a~ co E c~ cu to 0 O U _ - ~ U i 3 U ~ ~ M O N 00 -n ~A M ~ O ~ CO 3 ~ ~ E s ~ Q a ~ t ~ u`~i o o ~ o .- o ~ o o o o o o o o o o o 0 ci 0 o 0 o ~ ~ L Q ~ Q O r... N ~ N . 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I ~ ~ ~ , i ~0 3Y4'/ ~~ ~~/ ~~ I /CMP,E IST IrN'i/ /~ ~ ' ~ ~ ~ / ~i ~ ~ ~~ ~, ~~ ' i~ i ~ ~ ~ ~ I / / 9 X~^^3yIIX 2 I ~ I \ l I / l ~1 I ~ / I I / I I I I / I ~ 9 x2 ~ I `~X^ V3y' ~- j ~ / I \ I I ~l I I j / ~ ~ i I ~ ~l' i ~~ i~ ~:~ z ~; j ® ~ ~s~ Exlsnya / ~ i I = / / I ~ R W 15+~~ % 14.00 GRADE CHANGE 5 2 U Z Q m 0_ E Q U 10.22 GRADE CHANGE 1~+~~ 2% STONE LINER TEMPORARY LINER STRAY & TACK 2~+~~ lzxlxz 9X^I_'.IX2 ^1 9x1x2 R/W I I ax3xz I I ex® CAMP BRANCH 15+~~ 1 1 18' CIP E%ISTING T I I I J- I I I IB' CT1P IE%ISTING 1 1 1 18' CMP E%IST ING '~_ /I /~ i i ~ ~ ~i i ii /35• CIIP Exlsr~ // /1 R/W 2~+~~ 8 15+~~ 25+~~ E 0 P 22+8~ i i R/W STONE LINER TEMPORARY L[NER STRAM & TACK I 12XI X2 I 9X ~X2 1 - - 12x~ x2 -----' 2~+~~ 18' CIM PFgP05ED i I I .-L_ I I I I I I IB' CNP PfgPOSEO I I I I I I I I I R/W 7 ~ ~ nff~ 8 2~+~~ SITE STA. BRANCH EXIST. PROP. SKEW SIZE •1 0.39 6' W X 8' 26' X 71' RETAIN 95' D X 47' ARCH CMP PROP.EXIST. CL CL I I ~ 2, ~ ~ ~ I ~ ~ I ~ ~ 95' ~ ~... ~ ~ 9' ~ 9' ~ ~ ~ ~ ~ I ~ PROP, EXIST PROP, EXIST EP EDGE EP EDGE TL TL SWAIN CO. SR 1197 CAMP BRANCH RD. N 20' i I M ELEV T 100 0 B . . . . . NAIL IN 18' SPRUCE STA ' RT 0 . . . 0 1 30 P 0 0 D i A W' L i I il l ' I P P S q ~ I P P I T C H DW A V E 1 0 P ~ ,E I ' I I I i ~ I I I ~ I , I i I I i i I 0 G I ' i 0.'G: I i i I I l i ~ I 1 " 1 ~' EXISTING GRADE- 4.2% % - PROPOSED GRADE- 4.2 SITE STA. BRANCH SIZE EXIST. PROP. SKEW •2 10.31 4' W X 30' X 40' X 45' 8' D 48' CMP 48' CMP . XT. OUTLET END 5' ROP.EXIST. CL CL i ~ 1 i ~ ~ 45• j ~ ~ ~ ~ ~ 9 I 9 ~ i ~ ~ ~ ~ PROP,EXIST EXIST PROP. EP EDGE EDGE EP TL TL SWAIN CO. SR 1197 CAMP BRANCH RD. ~/""'~ EXT, INLET END 5' =20' il ! I I I I ~ T, g, M. ELEV. 100.0 ' I NAIL IN 10 POPLAR ' I 30 RT. STA. 10.40 I I I I I I I I I I I I I I P O S D I ~ P H A A L R P . C ! E E 8 0 I ~ I 3 R ' I I ~ I L ^ I '~ : .r • ~" ' 4 i s i I i I I } ~ 0 G . I i E T E D I i I I I I I I ~ R H ~ I i I I I I I 1 " • 1 ~' I EXISTING GRADE- 8.7% ~ PROPOSED GRADE- 9.3% SITE •3 EXIST. STA. 12.59 PROP. STA. 12.57 BRANCH SIZE 3' W X 6' EXIST. 41' X 36' PROP. 86' X 36' EXIST. SKEW 135' PROP. SKEW 140' EXT, END D CMP CMP PROP, CL ~ C~ \ I \+ ~ INLET 17.5' \\) \ \ ' !EXIST PROP. EP EDLE XIST. - CL ' ~ ~ I - ~ ~ 140' ~ \\ \ \ \ \ ~ 9' \\ I EXIST I PROP. EDLE EP SWAIN CO. SR 1197 CAMP BRANCH RD. N „~ \ \ \\ \ \+\ ~ EXT. OUTLET END 27.5' \ ~ 1"=20' T.B.M. ELEV. 100.0 IRON PIN ' 25 LT. STA. 13.15 0 . L V. E T D 1 . 5 -.~ ~ ' X N I 1 „ ` 15 ~ 7 .6% PROPOSED GRADE- SITE •4 STA. 15.40 BRANCH SIZE 3' W X 6' D EXIST. 32' X 36' CMP PROP. 74' X 36' CMP SKEW 35' SWAIN CO. SR 1197 CAMP BRANCH RD. PROP.EX[ST. CL CL ~ ~ // N 1 ~ ~ /j EXT. INLET END 14' 35 t / /~ // i ~ / / ( i / PROP, EXIST EXIST PROP. EXT. OUTLET ~/ Ep EDLE EDLE EP END 18' 1"'15' 1 " = 2~' T.B.M. ELEV. 100.0 CORNER OF ROCK WALL 37' LT. STA. 15.60 EXISTING GRADE- 5.0% PROPOSED GRADE-14.5% CAMP BRANCH STREAM RELOCATION CAMP BRANCH ROAD (SR 1197} SWAIN COUNTY JULY 27, 2006 -, _' ' ' ; ; ~ ~~' i I 1 ~ ~~, _~--- ~ r_--- ,, ~ i i ~ l ,! '~~;~,~' AU G - 7 2006 ~ w ___----~ ~,,.,-,a p1~,.. f u .n :~ TABLE OF CONTENTS STREAM RELOCATION PLAN ............................................................................. 3 Objectives ...............................................................................................................3 Project Description ............................................................................. ...3 ................. Reference Reach ..................................................................................................... 3 Site Maps ................................................................................................................ 3 Site Plans ..................................................................... ........................................... 4 Biological Community Types .................................................................................4 Morphological Stream Classification ..................................................................... 4 Stability Enhancements ..........................................................................................4 Sediment Transport ................................................................................................5 Buffer and Planting Requirements .........................................................................5 Potential Problems .................................................................................................. 5 SUMMARY TABLES ....................................... ...............6 LOCATION MAPS .................................................................................................10 PLAN VIEW ............................................................................................................13 PROFILE, EXISTING AND PROPOSED ..............................................................14 CROSS SECTIONS, EXISTING AND PROPOSED .............................................16 ROCK WEIR DETAILS ..........................................................................................21 REGIONAL CURVES ............................................................................................23 STREAM HABITAT EVALUATION ....................................................................24 PEBBLE COUNTS ..................................................................................................28 2 STREAM RELOCATION PLAN Objectives The NC DOT proposes to pave Camp Branch Road, SR 1197 in Swain County. Camp Branch runs adjacent to the existing gravel road. This will require relocating the stream for approximately 180 feet to accommodate the new fill slope. Project Description This road is a dead end road and provides access to homes in the area. The watershed is primarily wooded. The existing stream segment is wooded and is in a Type II valley. The stream is proposed to be relocated to a remnant channel further from the road. The upper section is proposed to be an "A4a+" channel and the lower section is proposed to be a "B4a" channel. Plans, profile, and cross sections are attached. Reference Reach The existing stream was used for the reference reach. It is somewhat impacted from the gravel road and land disturbing activities. Particle counts along the reach and in 4 cross sections indicated an influence from quarried road materials in the 2 - 12 mm size range. The cumulative distribution curves indicated a bimodal distribution from this influence. The reference reach had ample capacity to move this size particle through this section. Bankfull dimensions were also compared to an un-named tributary to Sols Creek and the Regional Curve. A plot of this data is included. Residents in the area related that the historical location of the stream prior to about 17 years ago was in the remnant channel further away from the road and near the foot of the slope on the northwest side of the valley. Several springs originating in this area and surface runoff from rainfall events contribute flow to the remnant channel. This is the proposed location for the stream. Trees within the bankfull width appear to be less than 20 years old. This current channel location is steeper and is confined by larger trees, perhaps having been established prior to the stream relocation to its current position. This may have resulted in the tendancy toward a class "A" stream even though the valley type and setting would support a "B" classification. The scoured banks in some areas may be a result of this previous diversion to a steeper and more confined location. Site Maps Location maps of the site and the reference reach are shown on the following pages. I Site Plans Plans for the restoration include the plan view showing relative locations of proposed features, a profile view showing grade control, typical sections at specific locations, and details of various structures used for stability. Biological Communit~ypes The existing stream is somewhat affected by sediment load from road materials in the 2 -12 mm size range. The stream is also possibly altered from an original location further from the road. This current location is steeper and is confined by larger trees, which may have resulted in downward cutting and scoured banks in some areas. The proposed stream will be separated from the road for most of its length, which should allow better habitat to develop. The bottom substrate is a bimodal distribution of gravel and cobble with some boulders and bedrock. Pools of beneficial size were not prevalent along the existing reach. More defined pools beneath each step should benefit habitat. Habitat in the proposed stream relocation can be enhanced by maintaining and re-using natural woody material from in and around the existing stream. The existing left bank of the remnant channel is to be maintained undisturbed as much as possible from station 75 to 195. Several logs along the proposed route can be left strategically for habitat. Moroholo~ical Stream Classification The Rosgen stream classification system was used to classify the stream. The reach was classified as an "A4" to an "A4a+". Without the influence of the smaller size particles, it is anticipated that the classification would have been "A3" to "A3a+". The entrenchment ratio was anomalous, being greater than 2.2 in 3 of the 4 cross sections. One cross section had an entrenchment ratio of 2.0 which is in the "B" range but the width/depth ratio, slope, and sinuousity were more indicative of an "A" stream. The Valley Type II with some flood plain would support the type "B" classification. A table of morphological characteristics and supporting data is provided in the following pages. Stability Enhancements An apparent heavy sediment supply in the range of 2 - 12 mm comes from quarried road materials. Pavement of the roadway and constructing a shoulder will reduce the amount of this sediment that reaches the channel. The lateral stability of the existing stream is supported by the large woody vegetation and associated root mass, perhaps having been established prior to the stream having been diverted to its current location. The proposed higher width/depth ratio, lower slope, bank angles and low bank heights, and enhanced meander pattern are all factors that should contribute to lateral stability. Vertical stability of the existing stream is supported by bedrock and large cobbles which can be utilized in the proposed stream channel. Measures to provide stability in the relocated section include decreased slope between steps and grade control with rock weirs. 4 Sediment Transport Entrainment calculations on the existing channel indicated that particles up to 500 millimeters could be transported. Although a full pavement/subpavementpaiticle distribution was not done, measurement of the largest particles in the subpavement layer indicated particles up to only 180 mm were available for movement at bankfull conditions. The proposed stream is designed to transport particles in the range of 300 millimeters. The step spacing should result in a relatively uniform bankfull water surface slope. Care should be taken to avoid long step spacings which will isolate the slope between steps and result in a local slope that is insufficient to transport sediment particle sizes. Stability control will be maintained with the use of rock weirs. Buffer and Planting Requirements Native grass seeding and mulching will be performed on the disturbed areas adjacent to the stream for near term erosion control. Stream bank reforestation will be planted along both stream banks. Coir fiber mat will be installed on the stream banks where live staking is to be planted as shown on the stream bank typical cross section and in locations as directed by the Engineer. Standard seeding and mulching and reforestation specifications are included by reference and can be provided upon request. Potential Problems The high slope of the proposed stream is a potential problem. Care should be taken to use sufficiently sized rocks for grade control. Coir fiber matting will be used below the bankfull water level to maintain stability until vegetation and natural processes stabilize the stream. The left bank of the proposed stream will remain undisturbed as much as possible. 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O~ 0 c~ ~~ Srn ;. I~ v "h ~y 1~ O 'C4 Bankfull Width 100 F- W W tL 2 c 10 3 J J LL Y Z Q m 1 1 OO DRAINAGE AREA, ACRES 1000 Bankfull De th 10 W V_ S a 0 1 J J V_ Y Z Q m 0 100 DRAINAGE AREA, ACRES 1 ~~~ Bankfull Area 100 w W LL W a10 J J u_ Y Z Q m 1 1 ~~ DRAINAGE AREA, ACRES 1 ~~~ ^ .36 -NCSU Reg. Curve Wbf=19.9Aw l ower • Sols Creek - O CAMP RANCH , USFS + 157 O UT Sols Cr . X UT Sois Cr. USFS + 307 • I i 31 • Sols Creek -lower 1Aw^ Curve Dbf=1 ---NCSU Re . . g. 157 l USFS T S C + r. o s O CAMP BRANCH O U X UT Sols Cr. USFS + 307 -A- CAMP BRANCH ~ '- -- I --- j -NC Rural Mtn. & Pdt. Reg. Cur. Abt=20.87Aw^.68, NRCS, NCDSWC, NCSU '~ • UT Sols Creek -lower O Camp Branch j NRCS, NCDSWC, NCSU O UT Sola Cr. USFS + 157 X UT Sols Cr. USFS + 307 -A-Camp Branch a3 Appendix E DWQ Stream Habitat Evaluation Form 5/99 Revision 4 Ilabitat Assessment Field Data Sheet Mountain/ Piedmont Streams Directions for use of this Assessment: The observer is to survey a minimum of 100 meters of stream, preferably in an upstream direction starting above the bridge pool and the road right-of--way. The stream segment which is assessed should represent average stream conditions. In order to perform a proper habitat evaluation the observer needs to get into the stream. All meter readings need to be performed prior to walking the stream. When working the habitat index, select the description which best fits the observed habitats and then circle the score. If the observed habitat falls in between two descriptions, select an intermediate score. There are eight different metrics in this index and a final habitat score is determined by adding the results from the different metrics. Stream l ~n(P tJ~~~~fT Location/Road Sl~ ~~~~ County J W~~~ Date ~ '' a~ ~ `a ~ CC# Basin ~.. ~7?~ E ~EN~ Subbasin Observer(s) W ~~ ~ Office Location ~~Y' ~y S ~~~~ Agency ~G ~~T Type of Study: Fish Benthos Basinwide Special Study (Describe) ~LLoG~I ~ ~~~ o .a p~~~ o ~~ Latitude.3 S ~.Z 09 Longitude t/w a~ •~ Ecoregion (circle one) MT P Distance Surveyed~.~meters Physical Characterization: Land use refers to immediate area that you can see from sampling location -include what you see driving thru the watershed in the remarks section. Also use the remarks section for such descriptions as "deeply incised" or "exposed bedrock" or other unusual conditions. Land use: Forest q ~ % Active Pasture~_% Active Crops % Fallow Fields % Commercial Industrial % Residential~,_% Other °io-Describe: Width: (meters) Stream - ~ Channel ~ Average Stream Depth: (m) o, a4 Velocity ~ . ~ m/sec Flow conditions (circle one): High Normal Low ;. Martmade Stabilization: Y[ ] N[X] Describe: Water Quality: Temperature °C Dissolved Oxygen mg/1 Conductivity µmhos/cm pH Turbidity: (circle) Clear Slightly Turbid Turbid Tannic Weather Conditions: C~~ i'- (~O~ Photo # Remarks: I. Channel Modification (Use topo map as an additional aid for this parameter) c re A. channel natural, frequent bends (good diversity of bends or falls) ................................................... B. channel natural, infrequent bends...........~.1L 4 C. some channelization present....~...~.!:l~l.~.'1'..~.~ ................................................................. 3 D. more extensive channelization, >40% of stream disrupted ............................................................... 2 E. no bends, completely channelized or rip rapped or gabioned, etc ................................................... 0 The Internal Technical Guide for Stream Work in North Carolina 2~ B. riffle as wide as stream but riffle length is not 2X stream width ..................................... ~ 7 C. riffle not as wide as stream and riffle length is not 2X stream width ................................ 10 3 D. riffles absent ........................................................................................................................0 Subtotal VI. Bank Stability and Vegetation Left Bank Rt. Bank re Score A. Banks stable 1. no evidence of erosion or bank failure, little potential for erosion ................................... 7 7 B. Erosion areas present 1. diverse trees, shrubs, grass; plants healthy with good root systems ................................ 6 6 2. few trees or small trees and shrubs; vegetation appeazs generally healthy ...................... 3. sparse vegetation; plant types and conditions suggest poorer soil binding ....................... 3 3 4. mostly grasses, few if any trees and shrubs, high ersosion and failure potential at high flow 2 2 5. no bank vegetation, mass erosion and bank failure evident ............................................ 0 0 Total Remarks VII. Light Penetration (Canopy is defined as tree or vegetative cover directly above the stream's surface. Canopy would block out sunlight when the sun is directly overhead). re A. Stream with good shading with some breaks for light penetration ............................................. 10 B. Stream with full canopy -breaks for light penetration absent ..................................................... 8 C. Stream with partial shading -sunlight and shading are essentially equa .................................... 7 D. Stream with minimal shading -full sun in all but a few azeas ....................................................... 2 E. No shading .................................................................................................................................. 0 Remarks Subtotal ~~ The Internal Technical Guide for Stream Work in North Carolina 26 number of particles ~ r ~ 00 CD ~h N O O O O U c .~ C L O 7-. L O O O O t- 0 Y U O L .O N O O ~ o \ ° ~ o OT O N r ~ CM7 Ch I p CIS C j ~ O N ~ y ~ 0 ~ O U ~ ~ 7 O T U 1 I O c ~ M 0 r O N r +~ ~ r r O ~ .Q .i y C C V) p O rn ~ O ~ in C N E ~ y Y T ~ N ~ N . 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