20020598 Ver 2_401 Application_20080618

9 North Carolina Wildlife Resources Commission 0
Division of Engineering Services • 1720 Mail Service Center • Raleigh, NC 27699-1720
June 13, 2008
Ms. Cindy Karoly
NCDENR, Division of Water Quality, 401 Unit
2321 Crabtree Rd., Suite 250
Raleigh, NC 27604
Re: NWP-27; Clear Creek Mitigation Project Repairs, Clear Creek; Henderson County, NC
Dear Ms. Karoly:
Please find enclosed seven copies of the completed Pre-Construction Notification application along with supporting
drawings and documents for the proposed repairs to the Clear Creek stream restoration project.
This is an EEP mitigation project that was originally constructed in 2003. The floods resulting from the hurricanes of 2004
caused damage to banks and in-stream structures at several points along the project reach. EEP installed temporary
stabilization measures to prevent further bank erosion until a permanent repair plan could be developed and implemented.
The enclosed documents and plan drawings illustrate the existing conditions at the project site and the proposed remedy.
This application has also been submitted to US Army Corps of Engineers Asheville regulatory field office. A letter of
concurrence from the North Carolina Wildlife Resources Commission mountain region permit coordinator has been
attached following his review of this application.
The Commission has made an electronic funds transfer in the amount of $570 to the N.C. Division of Water Quality to
cover the major water quality certification fee (see attached Electronic Payment Ref. No. 30545).
If you have any questions or comments regarding this project, please feel free to contact me at [phone] or
[e-mail].
Sincerely,
Jeff Ferguson
Watershed Enhancement D sie
enclosure
Engineer
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VIG - - 05 78 v.2,
Office Use Only: Form Version March 05
USACE Action ID No. DWQ No.
(11 any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
1. 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 ? Express 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: NWP-27
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, attach the acceptance letter from NCEEP, 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 2 for further details), check heree-
t..
. .F
IL Applicant Information , A
Owner/Applicant Information
JUN 8 2008
Name: Ecosystem Enhancement Program UENk - EWER QUAUTY
YrET64198 AND ATER BRANCH
Mailing Address: 1652 Mail Service Center
Raleigh NC 27699-1652
Telephone Number: 919-715-0476 Fax Number: 919-715-2219
E-mail Address: Mike. McDonald(a)_ncmail.net
2. Agent/Consultant Information (if applicable). A signed and dated copy of the Agent
Authorization letter must be attached if the Agent has signatory authority for the
owner/applicant.
Name: Jeff Ferguson
Company Affiliation: North Carolina Wildlife Resources Commission
Mailing Address: 171 Southern Cross Rd.
Weaverville, NC 28787
Telephone Number: 828-231-3517 Fax Number: 919-707-0162
E-mail Address: ieff.ferguson(a)-ncwildlife.org
Updated 11 / 1 /2005
Page 5 of 12
III. 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 I 1 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.
1. Name ofproject: _ Clear Creek Mitigation Site - Repairs
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN):
4. Location
County: Henderson County, NC Nearest Town: Hendersonville, NC
Subdivision name (include phase/lot number):
Directions to site (include road numbers/names, landmarks, etc.): From I-26 take exit 18 on
to US 64 westbound. At 0.7 miles turn right on SR 1525 (Duncan Hill Rd) Go 0.8 miles &
turn right on SR 1503 (N Main St./Clear Creek Rd.). At 0.6 miles entrance to site is gated
dirt road on right (before Clear Creek bridge).
5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 35.349097 ON 82.453763 °W
6. Property size (acres): 6.397
7. Name of nearest receiving body of water: Clear Creek
8. River Basin: French Broad
(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/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: Conservation easement along both sides of Clear Creek.
Initial mitigation project was completed in 2003 Sanitary sewer line & easement runs along
left side of Clear Creek. Adjacent properties are wooded.
Updated 11/1/2005
Page 6 of 12
10. Describe the overall project in detail, including the type of equipment to be used: Perform
repairs to an existing stream restoration/enhancement mitigation protect A temporary boulder
revetment will be removed along a section of stream bank that was eroded during flood events This
section of stream bank, along with other eroding sections downstream will be reshaped and root
wad/ boulder revetment will be installed. Repair a damaged rock cross vane Remove deposition &
restore pool feature between Sta. 0+75-1+25. Erosion control matting will be applied to all repaired
banks, and all disturbed areas will be revegetated Equipment used will include: trackhoe w/
hydraulic thumb, backhoe & dump truck.
11. Explain the purpose of the proposed work: Repair of a flood damaged mitigation project to
stabilize eroding sections of stream bank and protect the project from future flood damage
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.
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.
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. Each impact must be
listed separately in the tables below (e.g., culvert installation should be listed separately from
riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts,
permanent and temporary, must be listed, and must be labeled and clearly identifiable on an
accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial)
should be shown on a 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.
1. Provide a written description of the proposed impacts: Reshape & stabilize approximately
50OLF of eroded stream bank. Within these sections: remove 110LF of temporary boulder
revetment, install approximately 21 OLF of root wad/boulder revetment remove deposition &
restore pool feature from Sta. 0+75-1+25 and repair damaged rock cross vane at Sta 1+50
Updated 11/1/2005
Page 7 of 12
2. Individually list wetland impacts (if applicable). Types of impacts include, but are not
limited to mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc.
For dams. senarateiv list impacts due to hoth stricture and flnndinu
Wetland Impact
Site Number
(indicate on map)
Type of Impact Type of Wetland
(e.g., forested, marsh,
herbaceous, bog, etc.) Located within
100-year
Floodplain
es/no) Distance to
Nearest
Stream
(linear feet Area of
Impact
(acres)

Total Wetland Impact (acres)
3. List the total acreage (estimated) of all existing wetlands on the property:
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, 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- To calculate ncrenue multinlv lenuth X width then d;v;de by dI ';AO
Stream Impact Perennial or Average Impact Area of
Number Stream Name Type of Impact Intermittent? Stream Width Length Impact
(indicate on ma Before Impact (linear feet (acres)
1 Clear Creek bank/channel p 60' 300 0
41
stabilization .
2 Clear Creek Bank stabilization P 60' 200 0.28

Total Stream Impact (by length and acreage) 0.69
5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.). Open water impacts include, but are not limited to
fill. excavation- dreduinu flnndino drainage hall-hpadc pto
Open Water Impact
Site Number
(indicate on ma) Name of Waterbody
(if applicable)
Type of Impact Type of Waterbody
(lake, pond, estuary, sound, bay,
ocean, etc.) Area of
Impact
(acres)

Total Open Water Impact (acres)
Updated 11/1/2005
Page 8 of 12
6
List the cumulative impact to all Waters of the U.S. resulting from the project:
Stream Impact (acres): 0.69
Wetland Impact (acres):
Open Water Impact (acres):
Total Impact to Waters of the U.S. (acres)
Total Stream Impact (linear feet): 500
Do any isolated waters exist on the property? ? Yes ® No
Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
applies to waters that have specifically been determined to be isolated by the USACE.
7. Isolated Waters
8. Pond Creation
draw-down valve or spillway, etc.):
Proposed use or purpose of pond (e.g., livestock
local stormwater requirement, etc.):
Current land use in the vicinity of the pond:
Size of watershed draining to pond:
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
Expected pond surface area:
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 topography, 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. Proposed impacts are intended to
repair existing bank erosion conditions and improve stream function. Work will be performed from the
bank wherever possible Reshaped banks will be covered with erosion control (coir) matting as grading
of each section of repair is completed Sediment fence will be installed and maintained around
temporary stockpile areas during construction.
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.
watering, irrigation, aesthetic, trout pond,
Updated 11/1/2005
Page 9 of 12
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on January 15, 2002, 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/strmgide.html.
1. 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
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
additional information regarding the application process for the NCEEP, check the NCEEP
website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of the NCEEP is proposed, please
check the appropriate box on page five and provide the following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
Updated 11/1/2005
Page 10 of 12
IX. Environmental Documentation (required by DWQ)
1. Does the project involve an expenditure of public (federal/state/local) funds or the use of
public (federal/state) land? Yes ® No ?
2. 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 [phone] to review current thresholds for environmental documentation.
Yes ? No
3. 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 ?
X. 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.
1. Will the project impact protected riparian buffers identified within 15A NCAC 213 .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
213 .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify )? Yes ? No
2. If "yes", 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.
Impact Required
Zone* r-, Multiplier
1 3 (2 for Catawba)
2 1.5
Total
* Zone I extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e.,
Donation of Property, Riparian Buffer Restoration / Enhancement, or Payment into the
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 213.0242 or .0244, or .0260.
Updated 11/1/2005
Page 11 of 12
XI. Stormwater (required by DWQ)
Describe impervious acreage (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. If percent impervious surface exceeds 20%, please provide calculations
demonstrating total proposed impervious level. n/a
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.
n/a
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. Cumulative Impacts (required by DWQ)
Will this project (based on past and reasonably anticipated future impacts) result in additional
development, which could impact nearby downstream water quality? Yes ? No
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
the most recent North Carolina Division of Water Quality policy posted on our website at
http://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description:
XV. 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).
Jeff Ferguson-NCWRC Engineerinq Services June 13, 2008
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Updated 11/1/2005
Page 12 of 12
r.?
E an ement
cement
April 7, 2008
Ms. Shannon Deaton
NC Wildlife Resources Commission
1721 Mail Service Center
Raleigh, NC 27699-1721
Dear Ms. Deaton:
This letter serves as the Agent Authorization letter allowing the Wildlife Resources
Commission (WRC) on behalf of the Ecosystem Enhancement Program (EEP) (as part of the
task oriented contract # D06082) to serve as Agent on the Clear Creek Project. The WRC is
hereby authorized to act on EEP's behalf as agent in the processing of the 404 application and to
furnish, upon request, supplemental information in support of the permit application. EEP
currently holds a Conservation Easement on the subject property which allows EEP to monitor
and maintain the site.
EEP looks forward to working with WRC on this project as part of the partnership between our
two agencies. If I can answer any questions, please contact me at 919-715-0476.
Respectfully,
zanne Kl ek
Ecosystem Enhancement Program Director of
Operations
cc: Jeff Jurek, EEP
Michael McDonald, EEP
Toni Jones, EEP
Jim Borawa, WRC
Prot" Our Stag ??NR
North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 / www.nceep.net

u'
y
North Carolina Wildlife Resources Commission
April 25, 2008
Ms. Amanda Jones
U.S. Army Corps of Engineers, Regulatory Branch
151 Patton Avenue, Room 208
Asheville, North Carolina 28801-5006
SUBJECT: Ecosystem Enhancement Program Nationwide 27 Permit Application
Clear Creek Mitigation Site - Repairs, Henderson County
Dear Ms. Jones:
The Ecosystem Enhancement Program requested a letter of concurrence from the North Carolina Wildlife
Resources Commission (Commission) for a 404 Permit from the U.S. Army Corps of Engineers.
Comments from the Commission are provided under provisions of the Clean Water Act of 1977 (33
U.S.C. 466 et seq.) and the Fish and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-
667d).
The project involves repairing a 500-foot reach of Clear Creek near Hendersonville that is a mitigation
site for the Ecosystem Enhancement Program.
The project will not harm trout.
The Commission can concur with a permit for the project if the following recommended conditions are
attached and used to help conserve fish and wildlife resources:
1. Only clean, large, angular rock, root wads, logs, or other natural stream design materials and
techniques are used for bank stabilization. Materials are not placed in the stream channels in a
manner that overly constricts stream flow or that impedes aquatic life movements during low flow
conditions.
2. Rock, sand, or other materials are not excavated from the stream channels except where necessary to
construct structures or to reestablish a natural channel according to reference information. These
materials are unstable in flowing-water situations and are unsuitable for bank stabilization
3. Only existing and actively eroding areas are stabilized. Grading and backfilling is minimized and tree
and shrub cover retained where possible to ensure long term availability of stream bank cover for
aquatic life and wildlife. Backfill materials are obtained from upland sites.
4. Sediment and erosion control measures are used and maintained until all disturbed soils are
permanently stabilized. All bare soil is seeded as soon as possible after ground disturbance and
erosion control matting is used with seeding on disturbed stream banks. Matting is secured with
staples, stakes, or, wherever possible, live stakes of native trees. Tall fescue is not used along streams.
Mailing Address: Division of Inland Fisheries • 1721 Mail Service Center • Raleigh, NC 27699-1721
Telephone: [phone] • Fax: [phone]
NCEEP Page 2 April 25, 2008
Henderson County
5. In-water excavation is conducted in dry work areas whenever practical. Sandbags or other diversion
structures are used where possible to minimize any excavation in flowing water.
6. All heavy equipment operated near streams is inspected and maintained regularly to prevent
contamination by fuels, lubricants, or hydraulic fluids.
7. Hydroseed mixtures and wash-waters do not reach streams.
8. Disturbance of riparian vegetation is kept to a minimum. Where disturbance for temporary access is
necessary, trees and shrubs are cut and the stumps and roots left to resprout. Disturbed stream banks
and the widest possible zone outward from the restored stream channel are planted with native trees
and shrubs (e.g., silky dogwood, rhododendron, dog hobble, red maple, silky willow, tag alder, black
willow, sycamore). This will help provide long-term bank stability and stream shading. Note, silky
dogwood, silky willow and black willow can be planted as live stakes collected during the dormant
season. Cuttings should be randomly planted on four (4) foot centers from the waters edge to the top
of the bank. Trees should be planted on ten (10) to twelve (12) foot centers. Stream banks in these
areas are also seeded with a native seed mix with a temporary nursery crop of wheat, millet or other
grain.
Thank you for the opportunity to review and comment on this project. Pending availability of field staff,
the Commission may inspect the work site during or after construction. If there are any questions
regarding these comments, please contact me at [phone] extension 24.
Sincerely,
Dave McHenry
Mountain Region Coordinator
Habitat Conservation Program
cc: Mr. Jeff Ferguson, NC Wildlife Resources Commission
:INITY MAP N
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:AR CREEK MITIGATION SITE - REPAIR PROJECT 2,000' 0 2,000' 4,000'
JDERSON COUNTY, NC
Scale - 1:24,000

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Cross section through riffle at invert of cross vane at Sta. 1+43. Photo looking downstream
shows temporary repair of left arm of cross vane and temporary rock revetment.

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Photo looking upstream from exaggerated point bar formed at Sta. 2+75 contributing to
erosion of the right bank. Temporary rock revetment shown on left bank.

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Erosion along right bank from Sta. 9+50 through Sta. 10+00. Right arm of cross vane at
Sta. 10+50 covered as channel narrowed.
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i.
R

point bar formed
following upstream
bank failure

x
?
J

observed stable
j riffle feature
I
' I
a
8 ?
? I
temporary repair
to left arm
of cross vane
observed
bank scour
® ROCK Top of Bank (712006
ROOT WAD Edge of Water (7120(
Tholweg (712006)
ROCK VANE
Conservation Eosemet
FENCE Boundary
AS-BUILT THALWEG
THALWEG MEASURED BY ECOLOGIC
PRIOR TO 2004 FLOOD
observed deposition
area
a r I ;
1 b 8
I
' F
g

Sanitary Sewer Easement
N ?
temporary rock revetment
® channel plug
Original as-built survey performed by Ecologic in 1/20C
Repair assessment survey performed by NCWRC in 7/201
L,
Ecosv1 till
J
40 0 40 BD
10
1
120
I imam!
0111
Scale: 1" = 40'
? NORTH CAROLINA WILDLIFE RESOURCES COMMISSION
?OUNA Clear Creek Mitigation Site DRAWN BY: J. Ferguson DATE; May , Zoos SHEET
WATERSHED ENHANCEMENT GROUP
Henderson County
NC
Repairs & Improvements APPROVED: DATE:
RESOURCES ,
20830 GREAT SMOKY MOUNTAIN EXPRESSWAY 626.452.6191Ext,26OFFICE [] REVISION: DATE:
WAYNESVILLE,NORTH CAROLINA 28786
828.452.7772 FAX Existin Pf n Meer
g ? , •
+ +
Sta, O 00 - Sta
6 10
I 5
. CAD FILE
D: ep-clearcreek-asbuilt.dwg OF

400*0
observed
bank scour
Ogg
}H
5

8
Y
l
k?
c

H
I
u /
O
LEGEND
® ROCK Top of Bonk (712006,
Edge of Water (7120(
ROOT WAD
Thalweg (712006)
ROCK VANE
Conservation Easemer,
FENCE Boundary
AS-BUILT THALWEG
THALWEG MEASURED BY ECOLOGIC
PRIOR TO 2004 FLOOD

_ - - - - ss---- SS---*
? gS____-SS-----SS----? SS----- SS MANHO
• --SS-----SS-----SS-----SS - -TOR-RiM-x-20
c unn?un? c __ .._. `

60®* ; r

?\ q?
O
r?.
Original as-built survey performed by EcoLogic in 1/20C
Repair assessment survey performed by NCWRC in 7/20(
Ecosystem 40 0 40
6" 1
A 80 120

„ .,.^ 11M
Scale: 1" = 40' i
NoR,?
NORTH CAROLINA WILDLIFE RESOURCES COMMISSION
Clear Creek
Mitigation Site
DRAWN BY: J. Ferguson
DATE: May, 2007
SHEET
CAROLINA
, WATERSHED ENHANCEMENT GROUP
Henderson Count
NC
Re
airs & Im
rovements APPROVED: DATE: ^
? y, p
p L
RESOURCES
p 20836 GREAT SMOKY MOUNTAIN EXPRESSWAY 828
452
6191 Ext
26 OFFICE
o REVISION: DATE:
.
.
.
wnnsg
WAYNESVILLE. NORTH CAROLINA 28786 828.452.7772 FAX Existing Plan View
g Sta. 6+10 Sta. 11 50
+
CAD FILE ID: ep-clearcreek-asbuilt,dwq
OF 5

® v
m{b1
O /
eggs

b

+
8

y

1

a

41
O
r?
Ecosystem
'.'_--
918061111
Ir,
i

:
Notes
Refer to Sheet 5/5 for root wad/boulder revetment
installation details.
Create intermediate & bankfull benches along left bank
from Sta 0+50 - Sta. 2+00 to maintain low flow
sediment transport competence and reduce near bank
stress at critical channel plug location during high flow
events.
Incorporate rock from existing temporary revetment along
with machine compacted earth fill at channel plug location.
NORTH CAROLINA WILDLIFE RESOURCES COMMISSION Clear Creek Mitigation Site DRAWN BY: J. F
WATERSHED ENHANCEMENT GROUP APPROVED:
Henderson County, NC Repairs & Improvements REVISION:
NGREAT SMOKY MOUNTAIN EXPRESSWAY 72FAX6OFFICE
WAYNESVILLE, NORTH CAROLINA 28786 8786 828.452.77 p CAD Fil_E ID: ep-,
WAY Pro Proposed Plan View Sta. 0+00 - Sta. 6+10
Proposed root wad/boulder revetment
along left Bank from Sto 0+80 - Sta. 1+50
(See detail on Sheet 5/5.)
Original as-built survey performed by EcoLogic in 1/2004.
Repair assessment survey performed by NCWRC in 7/2006.
40 0 40 80 120
Scale: 1" = 40
guson DATE: May, 2007 SHEET
DATE:
DATE: 3
;arcreek-asbuilt.dwg OF 5
"®108- 9P

Reduce existing point bar
from Sta. 2+50-Sta. 3+00
Reshape right bank &
install root wad/boulder
revetment from
Sta. 2+25-Sta. 2+85.
(See details on Sheet 5/5.)
N !
8., .+
y
D
is
Place boulders from temporary revetment
to anchor toe of point bar & maintain
channel dimension through critical section,
I
Y
Q? y ? 8
Y
to j
1
Proposed top of bank 0
@ bankfull elevation O'
Regrade bench to
bankfull elevation &
revegetate
Reconstruct left bank arm of cross vane
between Sta. 1+50-Sta. 2+00.
Install rock sill ® tie-in to left bank.
Use rock from temporary revetment when suitible. h
Sanitary Sewer Easement Create intermediate bench at
apex of bend.
(See detail on Sheet 5/5.)
LEGEND
Proposed Top of Bank
® ROCK Proposed Toe of Slope
EXIST. ROOT WAD Proposed Thalweg
ROCK VANE Conservation Easement
Boundary
Proposed Root Wad &
AS-BUILT THALWEG Boulder Revetment
0 Stream Impact Number from PCN
70

OUT OR
400 ft
AS-BUILT THALWEG T 'r Boulder Revetment
O Stream Impact Number from PCN
LEGEND
Proposed Top of BonA
® ROCK Proposed Toe of Slop
EXIST. ROOT WAD Proposed Tholweq
ROCK VANE Conservotlon Easemer
Boundary
Proposed Root Wad &
Proposed root wad/rock revetment 0
Sta. 9+55-Sta. 10+10,
Sta.10+75-Sta. 11+00

i
i
\
8

IF osystem
prN,
®+*

E ?
m /
rA
"s
"a
y
- --- - - SS-----SS-----SS-----ss--?
/ SS--- 'SS-----SS-- SS MANHOLE
-SS-----SS-----SS----- - ?, - -TOR RIM 88L -
SS MANHOLE
)P 1?y -- -ZO77 63r
Notes:
Reshape eroding right bank as necessary from Sta 9+50
through Sta. 11+00. Install root wad/boulder revetment
where shown on plan. Refer to Sheet 5/5 for installation
details.
Excavate sediment deposition from pool at Sta. 10+40-Sta.
10+80.
Reshaped banks shall be sloped at 2:1 or flatter, and
stabilized with installation of 980g/sm coir matting and live
stakes.
11®6
m
s"
Original as-built survey performed by Ecologic in 1/2004
Repair assessment survey performed by NCWRC in 7/2001
40 0 40 80 1
6M91 kffi?
Scale: 1" = 40'
NORTH CAROLINA WILDLIFE RESOURCES COMMISSION Clear Creek Mitigation Site DRAWN BY: J. Ferguson DATE: May, 2007 SHEET
Ao ?? APPROVED: DATE:
WATERSHED ENHANCEMENT GROUP
Henderson County, NC Repairs & Improvements
R Eb +}} REVISION: DATE:
o ?9A 20830 GREAT SMOKY MOUNTAIN EXPRESSWAY 828.452.6191Ex1.26OFFICE
Pronosed Plan View Sta. 6+10 - Sta. 11+00
WAYNESVILLE, NORTH CAROLINA 28786 828.452.7772 FAX N CAD FILE ID: ep-clearcreek-asbuilt.dwg OF 5

Install live stokes
on sloped banks.
Trench in1
matting
at top
of bank
Install 980g/sm weight
coir matting.
compacted earth fill 1 f
non-woven filter fabric

Anchor footer logs & root wad boles
with structure rock (1.5X log diameter).
Fill gaps between root fans along bank
with boulders. Re-use boulders from
temporary revetment when suitable.
Root Wad logs (Min. 16"0-hardwood) /
)oles (Min. 121.), root fans (Min. 6'0).
Excavate trenches into bank
so root fans are oriented slightly
toward flow, and tilted back so
flush with bank.
Regrode floodplain to
proposed bankfull elevations
as shown in plan view drawing.
footer log
(Min. 16"O-hardwood)
LEFT BANK STABILIZATION DETAIL
(Sta. 0+80 - Sta.1+50) Scale: 1 "=5'
Construct 8'W. intermediat bench
just above normal water elevation.
Note:
1. Install Min. 16"0 footer log parallel to stream bank beneath all root
wads.
2. Root wad logs shall be hardwood species, Min. 16"0 x Min. 121.
Angle root wads 20'-30' upstream toward flow. Root wads
should overlap.
3. Anchor footer logs & root wads with boulders. Boulders
shall be structure stone at least 1.5x diameter of logs,
4. Pack stone around root wads, footer logs & boulders to fill
all gaps.
5. Install a layer of filter fabric above boulders to prevent
piping. Backfill with machine compacted earth to grade.
6. Construct 6"H. x 2'W. earthen berm at top of bank behind
root wads extending 5' beyond upstream & downstream
ends of revetment.
7. All graded side slopes shall be coir matted & live staked.
Install coir matting &
live stakes on graded right bank.
1F'
PROPOSED REPAIR DETAILS cCi XS-1
(Sta.1+07) Scale: 1"=10'
r?
?'?:OtiYStCl11
\ existing channel dimension
® XS-1
proposed channel dimension
® XS-1
Install rock toe to
anchor point bar slope &
maintain channel dimension
through critical section.
TYPICAL ROOT WAD/BOULDER REVETMENT DETAIL
(Plan View) no scale

Install footer
logs parallel
to bank & beneath
each root wad.
lr'
Construct '-\
earthen berm
(6"H. X 2'W.)
along top of bank
behind root wads.
#11 NORTH CAROLINA WILDLIFE RESOURCES COMMISSION Clear Creek Mitigation Site DRAWN BY: J. Ferguson DATE: June 2007 SHEET
APPROVED: DATE:
WATERSHED ENHANCEMENT GROUP Henderson County, NC Repairs & Improvements
REVISION: DATE:
20830 GREAT SMOKY MOUNTAIN EXPRESSWAY 828.452.6191 Ext.26 OFFICE
WAYNESVILLE, NORTH CAROLINA 28786 828A52.7772 FAX Bank Stabilization Details CAD FILE ID: xsldetail.dwg OF 5
Construct earthen berm
at top of bank (6"H. x 2'W.)
existing channel
dimension ® XS1
proposed channel
dimension 0 XS1
stream bed
ROOT WAD / BOULDER REVETMENT
Plant containerized, native
riparian trees & shrubs on intermediate
and bankfull benches.
Install 980g/sm weight
coir matting & live stakes on all
reshaped banks.
earthen berm
compacted
earth fill

non-woven
filter fabric
Anchor root wad logs
& footer logs w/ boulders
(Min. 1.5X log diameters).
root wad log-hardwood
footer log-hardwood (Min. 16"0 X 121.)
(Min. 16'0 X 121.)
ROOT WAD/BOULDER REVETMENT & BANK STABILIZATION DETAIL
(Right Bank Sta. 2+25 - Sta. 2+85) Scale: 1 "=5'
(Right Bank Sta. 9+55 - Sta.10+00)
(Right Bank Sta. 10+75 - Sta. 11+00)
Min. 12'
o Angle root fans
J" 20'-30' toward
direction of flow.
F; f Overlap root fans.
Anchor footer logs
& root wad logs
with boulders
(Min. 1.5X log Dia.).
Fill spaces between
root wads with boulders.