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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
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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
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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
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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
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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.
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CAMP BRANCH STREAM RELOCATION
CAMP BRANCH ROAD (SR 1197}
SWAIN COUNTY
JULY 27, 2006
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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. This should allow existing
root mass to contribute to stability.
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STREAM RELOCATION
~ ~ 5 MILES SOUTH OF WHITTIER
VIA CONNELLY'S CR. ROAD
SWAIN COUNTY
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ENLARGED MUNICIPAL AND SUBURBAN AREAS
N SWAIN COUNTY
NORTH CAROLINA
O NORTH CAROLINA DEPARTMENT OF TRANSPORTATION
DMSION OF HIGHWAYS - GIS UNR
S U.S.DEPARTMENi OF TRANS-ORTATION
FEDEML HIGHWAY ADMINISTRATION
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Name: GREENS CREEK Location: 035° 22' 02.33" N 083° 21' 07.62" W
Date: 7/19/2006 Caption: CAMP BRANCH STREAM RELOCATION- SR 1197
Scale: 1 inch equals 1000 feet SWAIN CO `
Copyright (C) 1998, Maptech, Inc
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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
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SR 1197
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