20071449 Ver 1_401 Application_20070807

~ . ~ ~ ~
ENGINEERITIG $ HYDROGEOLOGY
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL. [phone] FAC.828.281.3351
www.altamontenvironmental.com
August 21, 2007
Mr. Steve Chapin
US Army Corps of Engineers
151 Patton Avenue, Room 208
Asheville, NC 28801-5006
G- i~49
Ms. Cyndi Karoly
NCDENR, Division of Water Quality
401 Wetlands Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Mr. Kevin Barnett Mr. David McHenry
NCDENR, Division of Water Quality NC Wildlife Resource Commission
Asheville Regional Office 20830 Great Smoky Mountain Expressway
2090 U.S. Highway 70 Waynesville, NC 28786
Swannanoa, NC 28778
Subject: Streambank Stabilization
DWR Project 06-North Pacolet River /Young and Morgan Properties
Polk County, North Carolina
Dear Messrs. Chapin, Barnett, and McHenry and Ms. Karoly:
~'A~'',;~1 F~''d~
RE~`~f`v`ED
Enclosed please find the pre-construction notification (PCN) for streambank stabilization located in Polk
County along property owned by Loraine Young and Perry Morgan. The work applied for in this permit
consists of streambank stabilization and debris removal.
The project site has been identified by the Polk County Soil and Water Conservation District as one area
eligible for North Carolina Department of Environment and Natural Resources (DENR), Division of
Water Resources (DWR) Water Resources Development Project Grant funding. The State of North
Carolina has recently provided funding through the DWR for damaged areas that were not addressed by
the federal Emergency Watershed Protection (EWP) program.
The project area consists of approximately 3501inear feet of streambank located along the North Pacolet
River and 150 linear feet of unnamed tributary in the community of Tryon in Polk County, NC. A site
vicinity map is included as Figure 1 of the attached PCN document. The North Pacolet River is
classified by the DENR as class "C;Tr" waters throughout the entire project area. A Trout Buffer Waiver
Request has been sent to Mr. Houser, State Sediment Specialist for the Division of Land Resources in
Raleigh, NC.
As an authorized agent for Polk County and the property owners, I have signed the application. Letters
of access /authorization are attached at the end of the PCN document.
AUG ~ ~ Zup
W~1`4AN NCB. ~!'Tf9 P e ~a. `~~ ~ i 'y
~~^~ ,~ ~t x~, ~1°C~ BENCH
P:\Polk SWCD NRCS\Polk DWR nroiects 02-08\Youns Site-DWR-06\Youne PCN cover letter.doc

Mssrs. Chapin, Barnett, Karoly, McHenry
August 21, 2007
Page 2 of 2
We appreciate your review of this application. If you have and question or need additional information,
please contact me.
Sincerely,
/~ ~
~_ ~-
Joel D. Le k, P.G.
enclosures: Check for permit fee (Karoly only)
PCN-DWR Project 08-Tributary to Hooper Creek / Myers and Ketcham Properties
Letters of Access /Authorization
Figures
Stream Structure Illustrations
Copy of Level III Assessment
Copy of Trout Buffer Waiver Request
cc (letter only): Polk County Soil and Water Conservation District
P:\Polk SWCD NRCS\Polk DWR oroiects 02-08\Youne Site-DWR-06\Youne PCN cover letter.doc

PRE-CONSTRUCTION
NOTIFICATION

FAYMEfV i
RE(;E(VED
Office Use Only: Form Version March OS
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 ~ 7 X 4 4 9
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: Nationwide 13 and 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 ~f f
Environmental Concern (see the top of page 2 for further details), chec ~~2~' LI ~~ s
II. Applicant Information
AUr 2 4 2007
f)Ef~R - WA"I~~R GuALiTY
Owner/Applicant Information "~VETI.AND3 P,~~D STC~pAI'.S4TER 9RANCki
Name: Property Owners: Loraine Young Applicant: Polk County Soil &
Mailing Address: 102 Little House Road Water Conservation Dist.
Tryon NC 28782 P.O. Box 236, # 4 Annex
Owner Phone: [phone] or 828-8595758 Columbus. NC 28722
Perry Mo man
170 Little House Rd
Tryon, NC 28782
Owner Phone: [phone]
Telephone Number: 828-894-8550 Fax Number: 828-894-2231
E-mail Address: sandra.reid(a~nc.nacd.net
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: Joel Lenk
Company Affiliation: Altamont Environmental Inc.
Mailing Address: SO College Street
Asheville. NC 28801
Telephone Number: 828-281-3350 Fax Number: 828-281-3351
E-mail Address: jlenk(cr~altamontenviornmental. com
Page 5 of 16

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 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.
1. Name of project: DWR 06-North Pacolet River / Young & Mor ag n Properties
2. T.I.P. Project Number or State Project Number (NCDOT Only): NA
3. Property Identification Number (Tax PIN): P35-16 (Young , P) 35_17 (Morgan)
4. Location
County: Polk County Nearest Town: Tryon
Subdivision name (include phase/lot number): NA
Directions to site (include road numbers/names, landmarks, etc.): From I26 east, exit at the
Columbus / Tryon exit # 161 and follow the signs to Tryon which will put you on Highway
108 west. Follow Highway 108 west approximately two and one quarter miles through the
town o~Lynn and make the rim fork after old Howard Gap Road on to SR 1121 towards
Harmon Field. Pass Harmon Field on your right and turn right on to Highway 176 west.
Follow 176.for one tenth of a mile and turn le t gust before crossing the North Pacolet River
on to Little House Road The Young residence is a few hundred yards on your right as the
road turns away.from the river. The site borders the southeast side of the river.
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): 035.2223017 °N 082.2570159 °W
6. Property size (acres): Young =1.25 Morgan=1.15 Total =2.40
7. Name of nearest receiving body of water: The North Pacolet River.
8. River Basin: Broad River Basin
(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 6 of 16

9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: The conditions at the site consist o~approximately 350 linear
eet of vertical eroding and rapidly migrating cut bank on the outside of a river bend along
the North Pacolet River and 150 linear feet of channelized tributary with bare vertical banks
and an abundance of English Ivy. Land use in the vicinity o the project consists of
residential homes and small tracts of wooded~roperty.
10. Describe the overall project in detail, including the type of equipment to be used: The State
of North Carolina has provided fundin tough the DENR Division of Water Resources
~DWR) Water Resources Development Proiect Grant program for damaged areas that were
not addressed by the Emergency Watershed Protection (EWP) program. The ,grant targets
streambanks that are actively contributi~ sediment to waters of the United States, resulting
in a reduction o water quality The Young / Morgan site has been identified by the Polk
County Soil and Water Conservation District (PCSWCD) as one area eligible or DWR
funding The project area includes 350 linear eet ofstream. Bank stabilization will address
the entire 350 linear eet of the stream on river right. Riparian enhancement will address the
entire site. The North Pacolet is classified as "C; Tr"waters throughout the project area. A
Trout Buffer Waiver Request has been sent to Mr. Houser, State Sediment Specialist for The
Division of Land Resources (DLR) North Carolina Department of Environment and Natural
Resources (DENR).
A Level III Assessment and survey of the stream with a rotating laser was per ormed by
Altamont Environmental Inc. prior to the design of bank stabilization and riparian
enhancement measures. The assessment evaluated the existing conditions of stream
morphology and the quality of vegetation within the riparian corridor. The findings of the
assessment were provided to the PCSWCD and the DLR L ttached).
Along the cut-bank of the North Pacolet River on river right, atrack-mounted excavator will
be used to create a oodplain bench at or slightly below, the bankfull elevation. Above the
bench the bank will be sloped to approximately 3:1 (H.•V) and will extend to the elevation of
the top of bank Four rock J-Hook Vanes will be constructed in the riverbend and extend
into the newly created floodplain bench and the created three to one slope. Rock Toe
stabilization may also be used between J-Hook Vanes. Rock structures will be backed with
700 weight rlter fabric to minimize wash out of backfrll behind the structures.
One hundred.~fty feet of the tributary from its confluence with the North Pacolet upstream
will be cleared of exotic invasive vegetation by mechanical means. A small floodplain bench
will be created adjacent to the channel and the banks will be sloped to 3:1 (H.• V) .
Disturbed areas from the edge of water to the top of bank will be seeded with Ernst
Conservation Seeds Riparian Buffer Mix ENRMX--178. Disturbed area below the top of
bank will be over-seeded with a nursery crop of grain suitable to the season in which
planting will take place. Caution will be used to keep fertilizer and mulch out o the river
and above the typical high water elevation in order to reduce the risk of eutrophication.
Fescue seed mixes will not be used at the site below the elevation of the top of bank or within
20 feet of the river. More invasive seed, such as lespedeza will not be used for this project.
Page 7 of 16

areas between the edge of water and an elevation above bankfull will
with coin matting (9808/m`on the Pacolet and 600 g/m` on the tributary) and disturbed areas
above the coir mat will be stabilized with coconut geo-lute mat that does not contain plastic
netting or non-biodegradable materials. Erosion control matting will be trenched in on all
sides to a depth ofsix-inches and will be staked down with a combination of wooden and live
stakes.
Areas of the cut-bank where large living trees exist close to the top of bank will be protected
by the installation of rootwads and rock toe protection.
The protect will include removal of debris (i. e. large trees) from the streambanks that is
obstructing benching sloping and installation of vane structures or that could be remobilized
duringLhigh flows and cause damage to downstream infrastructure.
Rock toe protection will be installed in the ollowing manner: one row of boulders will be
placed in a footer trench The footer trench will key into stable areas of the bank at the
upstream and downstream extents of the Rock Toe. The footer trench will be lined with, and
the rock toe protection will be backed with 700-weight Ater fabric. Depending on the
vulnerabilit~of the area another tier of large boulders may be placed on top of the footer
rock and set back approximately one to two feet in order to match the slope of the
streambank Void spaces behind the footer and tiers of rock will be back-filled with material
that was excavated during the installation o the footer trench. When backfilling is complete,
excess Ater cloth protruding from between the boulders and the backfrll will be trimmed to
an elevation slightly higher than the elevation o the top of the boulder toe protection. Rock
toe protection may be used in areas were high duality mature trees are situated close to the
top o~bank and are in danger of being undercut by the river
Single vanes and J-hook vanes will be constructed of large angular rock. The vane
structures will be used to turn flow in the riverbend and protect the riverbank in the high
stress area along the cutbank. These structures will be installed usingLsimilar techniques as
used for installing rock toe structures utilizing footer trenches, footer rock, and 700-weight
. alter _fabric Please refer to the attached illustrations for detail pertaining to in-stream
structures.
Equipment used to accomplish the above tasks will include a rubber tired back-hoe /loader,
a 200 series track-mounted excavator with hydraulic thumb, one or two I S-ton dump trucks,
and hand tools A wood chipper may be used to reduce the amount of debris to be hauled
awa~from the site and minimize potential disposal fees. Wood chips may be used to mulch
areas beyond the top o~'bank
Sedimentation and erosion control practices will be implemented throughout the project.
Equipment fuel and materials will be staged and parked above the floodplain when not in
use.
Page 8 of 16

After stabilization measures are in place and disturbed areas of the site are seeded, native
trees and shrubs in the orm of live stakes bare-root and container plants will be planted in
stabilized areas as well as in other areas o the protect reach where riparian vegetation is
parse or narrower than 20 ~e~rom the water's edge. Tree varieties were selected partially
by observations made during the Level III assessment and by selection of native trees that
could exist in the Piedmont Re igLon of North Carolina. The contractor will be required to
install equal numbers of at least six varieties of large trees om the following list.• River
Birch Shagbark Hickory White or Green Ash Black Walnut American Beech, Tulip Poplar,
Sourwood Silver Maple Eastern Cottonwood Sycamore Black Cherry, White Oak or
Southern Red Oak The contractor will also be required to install equal numbers of at least
eight species from the followin lg ist of small trees: Downy serviceberry (Shadebush),
American Hornbeam (Ironwoods American Holly, Red Mulberry, Common Alder, Red
Chokeberrv Button Bush Witch Hazel Winterberry, Northern Maeberry, Catawba
Rhododendron Wild Azalea Blackberry Dog Hobble or Fetter Bush. Planting of trees,
shrubs and live stakes will conform to the specifications outlined in the NCDENR Guidelines
or Riparian Buffer Restoration.
At the project site work shall proceed from downstream to upstream to reduce sediment
loading Staging areas for equipment and material will be placed in upland areas away from
surface water and outside o the floodplain. Work will proceed as follows at the work area
(as applicable)
1. Flag the work limits.
2. Mark live trees and shrubs to be protected.
3. Construct temporary construction entrances /exits where necessary.
4. Place erosion control fencing and other protective measures, as necessary.
5. Inspect and maintain repairs
A Site Vicinity Map is included as Figure 1. A Site Plan View is included as Figure 2.
Cross-sections proposed construction plans and a longitudinal profile o the protct area
are included as Figure 3. R~resentativephotos of the protct area may be found in the
attached Level III Assessment.
11. Explain the purpose of the proposed work: The work is being completed to substantially
reduce the amount of sediment entering the river within the project area and to protect
infrastructure beyond the cutbank. The protct is designed to return the referenced portion
of the tributary to a state of stability and to increase it's natural potential by providing the
tributary access to a floodlain and by restoring and enhancing native vegetation within the
riparian corridor.
Page 9 of 16

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. Permits have not been previously applied for at this site.
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.
V. 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: Impacts are discussed in detail in
Section III 10 of this document.
Page 10 of 16

2. Individually list wetland impacts. Types of impacts include, but are not limited to
mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams,
separately list impacts due to both structure and flooding. Wetland impacts will not occur as
part to this project
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: Wetlands do not
exist on the re erenced property within the work area.
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 acreage, multiply length X width, then divide by 43,560.
Stream Impact
Number
(indicate on ma)
Stream Name
Type of Impact
Perennial or
Intermittent? Average
Stream Width
Before Im act Impact
Length
(linear feet) Area of
Impact
(acres)
1 North Pacolet
River Stabilization Perennial ~70 feet @
Bkf 300 < 0.21
2 Unnamed Trib. Stabilization Perennial ~13Bkf @ 150 < 0.11

Total Stream Impact (by length and acreage)
Page 11 of 11

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, dredging, flooding, drainage, bulkheads, etc.
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)
6. List the cumulative impact to all Waters of the U.S. resulting from the project:
Stream Impact (acres): < 0.40
Wetland Impact (acres): 0
Open Water Impact (acres): 0
Total Impact to Waters of the U.S. (acres) < 0.40
Total Stream Impact (linear feet): 350
7. Isolated Waters
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.
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.):
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.):
Current land use in the vicinity of the pond:
Size of watershed draining to pond: Expected pond surface area:
Page 12 of 16

VI. 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. On behalf o~ the PCSWCD,
Altamont will provide contractors engaged in the implementation of this work both written and
verbal instructions o~'all impact avoidance statements provided below. All heavy equipment will be
kept out of the stream channel during streambank stabilization work and debris removal except
where absolutely necessary to complete work. Disturbance of the channel bottom, streambanks
and equipment access areas shall be held to the minimum necessary to allow for implementation
of bank stabilization work. Work will be conducted in a downstream to upstream direction.
Streamflow will be diverted away from work areas with the use of sand bags or by placing
excavated footer material such that it deflects water away from work areas. Work will be
completed in stages such that segments o the project will be completed and stabilized on a daily
basis Temporary grass/grain cover shall be planted on all bare soil immediately after ground
disturbing activities are completed Straw mulch and tall fescue grass will not be used in riparian
areas Herbaceous woody shrub and tree vegetation will be installed on the streambank upon
completion of bank stabilization work. Altamont will provide a site manager to routinely inspect
and supervise contractor work to help ensure impact avoidance instructions are being ollowed.
VII. 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 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
Page 13 of 16

Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/ncwetlands/strmgide.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.
Not Applicable
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 ofNon-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
VIII. Environmental Documentation (required by DWQ)
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 ^
Page 14 of 16

IX. 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 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
2B .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.
Zone* Impact
(s uare feet) Multiplier Required
Miti ation
1 3 (2 for Catawba)
2 1.5
Total
* Zone 1 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 2B .0242 or .0244, or .0260.
X. 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. Impervious acreage does not exist at the site and
plan for the proiect will not create impervious acreage
XI. 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.
Wastewater will not be generated as part of this proiect.
Page 15 of 16

XII. 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 anafter-the-fact permit application? Yes ^ No
XIII. 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:
Implementation o~this project should have a positive effect on nearby downstream water quality
h» yroviding a ve et~ed oodplain bench for sediment to be deposited, b~providin~ stability to
the eroding cut-bank and by enhancing and widenin t~L he riparian corridor.
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).
Planned implementation o this protect is scheduled to take place in the fall of 2007 when trees
_.~.~ ~ ~ ~
nt's Signature D to
valid only if an authorization letter from the applicant is provided.)
Page 16 of 16

LETTERS OF
ACCESS /AUTHORIZATION

ACCESS AGREEMENT
This Access Agreement is made between Polk County Soil and Water Conservation
District Supervisor Board (SWCD) and:
Street Address:

The SWCD is requesting access to the property for the purpose of assessing and repairing
damage to the streambank, stream channel, and floodplain that was caused by hurricanes
Frances and Ivan and more recent storms. The repair work will include some or all of the
following elements:
-Streambank Stabilization
-Debris Removal
SWCD and the Property Owner agree:
-Native plant Re-vegatation
-Exotic/Invasive plant removal
1. Property owner grants permission to SWCD and its contractors and agents to
enter upon their land for the purpose of assessing and repairing the flood damage
caused by Hurricanes Frances and Ivan. Additionally, this agreement includes the
right of ingress and egress on the land for the purpose of maintaining the
emergency works for the period of one year from the date of completion.
2. Property owner grants permission to SWCD and its contractors and agent to
conduct stream stabilization measures, which may include debris removal, stream
bank stabilization using rocks, wood, and/or, mulching and seeding, and/or
channel relocation.
~. CUVrTI agrePg to ~Cmply with lneal~ ctate~ and federal la~~vg applicable try the wprk~
and further agrees to exercise due care and caution in the performance of all work
on the Property.
4. This Agreement constitutes the entire understanding between the parties. All
prior agreements or understandings, whether oral or written, are superseded. This
Agreement may be amended only by a written document duly executed by the
parties.
5. The proposed measures are intended to repair flood damage to the stream and to
return affected areas to pre-flood conditions. Repair and/or improvements to
structures are not part of this project. Damaged bridges, driveways, and eroded
fields are not addressed by measures. SWCD and its contractors will strive to
minimize impacts to adjacent properties. However, some impact may be
unavoidable. The Property owner releases SWCD and its contractors from
liability for any damage incurred as result of this work.
6. This agreement does not provide confirmation that the subject site is eligible for
Emergency Funds, nor does it encumber funds for any repair work at this site.
7. Property owner agrees not to remove or modify construction repairs, including
vegetation, for one year from the date of completion.

8. SWCD will discuss the draft design with the Property Owner prior to submittal
for permitting.
9. Property Owner agrees to reimburse SWCD for all costs associated with the
design if the property owner decides to terminate this agreement after work has
begun.
10. The Polk County Soil and Water conservation District and Polk County property
owners hereby authorize Altamont Environmental Inc. (Agent/Consultant) to sign
and execute all necessary permits and coordinate communications with the
appropriate regulatory agencies.
Polk County Soil and Water Conservation District

Date: % ~ - ~l1 ~~
SWCD or eprese ive
By: ~
Date: 1! - 2~_n~~
Property Owner
~,
-~ l
Date: 01 ~ ~ - (~

ACCESS AGREEMENT
This Access Agreement is made between Polk County Soil and Water Conservation
District Supervisor,BQard (SWCD) and:
e
Address:
b /~. ~'
- ~ _-.~ -
The SWCD is requesting access to the property for the purpose of assessing and repairing
damage to the streambank, stream channel, and floodplain that was caused by hurricanes
Frances and Ivan and more recent storms. The repair work will include some or all of the
following elements:
-Streambank Stabilization
-Debris Removal
SWCD and the Property Owner agree:
-Native plant Re-vegatation
-Exotic/Invasive plant removal
1. Property owner grants permission to SWCD and its contractors and agents to
enter upon their land for the purpose of assessing and repairing the flood damage
caused by Hurricanes Frances and Ivan. Additionally, this agreement includes the
right of ingress and egress on the land for the purpose of maintaining the
emergency works for the period of one year from the date of completion.
2. Property owner grants permission to SWCD and its contractors and agent to
conduct stream stabilization measures, which may include debris removal, stream
bank stabilization using rocks, wood, and/or, mulching and seeding, and/or
channel relocation.
3. SWCD agrees to comply with local, state, and federal laws applicable to the work,
and further agrees to exercise due care and caution in the performance of all work
on the Property.
4. This Agreement constitutes the entire understanding between the parties. All
prior agreements or understandings, whether oral or written, are superseded. This
Agreement may be amended only by a written document duly executed by the
parties.
5. The proposed measures are intended to repair flood damage to the stream and to
return affected areas to pre-flood conditions. Repair and/or improvements to
structures are not part of this project. Damaged bridges, driveways, and eroded
fields are not addressed by measures. SWCD and its contractors will strive to
minimize impacts to adjacent properties. However, some impact may be
unavoidable. The Property owner releases SWCD and its contractors from
liability for any damage incurred as result of this work.
6. This agreement does not provide confirmation that the subject site is eligible for
Emergency Funds, nor does it encumber funds for any repair work at this site.
7. Property owner agrees not to remove or modify construction repairs, including
vegetation, for one year from the date of completion.

8. SWCD will discuss the draft design with the Property Owner prior to submittal
for permitting.
9. Property Owner agrees to reimburse SWCD for all costs associated with the
design if the property owner decides to terminate this agreement after work has
begun.
10. The Polk County Soil and Water conservation District and Polk County property
owners hereby authorize Altamont Environmental Inc. (Agent/Consultant) to sign
and execute all necessary permits and coordinate communications with the
appropriate regulatory agencies.
Polk County Soil and Water Conservation District
By:
SW~C~ or R re ative
By:
Date: ~ 2
Date:
Prope Owner
B ~ l~t~
Date: 7_ 2,~ _Q

FIGURES

a
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SOURCE USGS LANDRUM QUADRANGLES
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SITE VICINITY MAP FIGURE
EE RING & HYDROGEOLOGY DWR 06- NORTH PACOLET RIVER
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL [phone] FAC 828.281.3351 & TRIBUTARY / YOUNG &
www.altamontenvironmental. com
MORGAN PROPERTIES
DRAWN BY: JOEL LENK SCALE (FEET) TRYON, POLK COUNTY, NC 28782
PROJECT MANAGER: STUART RYMAN
CLIENT: PCS&WCD 500 0 500 1000
DATE: 1-16-07

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STREAM STRUCTURE
ILLUSTRATIONS

PLAN

F
=i~
1
Legend -8
~, ,E
Header Rods ~ .Tree.
Footer Rods ~j~ v~~a
Notes:
-Rocks in vane are not
spaced.
-Rocks in "J" section are
spaced 1/2 rock width.
CROSS~ECTION
07-1449
NOT TO SCALE
E N I N ~, E_R I N G &_ H Y O R O G E_O,LOGY'
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL.828.28L3350 FAC.828.28L3351
www.altamontenvironmental.com
DRAWN BY: JOEL LENK
PROJECT MANAGER: STU RYMAN SOURCE: NORTH CAROLINA
CLIENT: PCSWCD STREAM RESTORATION
DATE: 8 / 13/ 07 INSTITUTE
ROCK J-HOOK
ILLUSTRATION
DWR06-N. PACOLET RIVER 8~ TRIBUTARY /
YOUNG AND MORGAN PROPERTIES
POLK COUNTY, NORTH CAROLINA
\PCIR $WCD NRCS\P0~_n DWR vaO~ECTS 02-OB\YOIMC SiiE DWR-06\F14uRES\STFUCi1,pE$'~~~USTVdTiCNS.OW4
Structure spans 1/2 to Z3 of stream width.
f
J
PROFILE
slope a~
ve9ecate sar>l~
sanlat,u
iC Benon - ~`

Structure spans 1/2 to 2/3 of stream width.
Flow
Note:
-Rocks in vane are not
spaced.
~~ i~
Bankfull Stage
F
Slope and
Vegetate Banks
Bankfufl
Bench
%1-~1
Legend ~ged 1
Elena ' ~
Header Rock _ -
~ Vegetation
Footer Rode
NOT TO SCALE
E-NGIN£ERfN-G & H YDROG£OLOGY..
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL.[phone] FAC.R28.281.3351
www.altamontenvironmental.com
DRAWN BY: JOEL LENK SOURCE: NORTH CAROLINA
PROJECT MANAGER: STU RYMAN srREAN RESroaanoN
CLIENT: PCSWCD INSTITUTE
DATE: 8/13/07
PROFILE
CROSS-SECTION
SINGLE ROCK VANE
ILLUSTRATION
DWR06-N. PACOLET RIVER & TRIBUTARY /
YOUNG AND MORGAN PROPERTIES
POLK COUNTY, NORTH CAROLINA
P: \Pacn SWCD NRCS\PoLR DWR Pr+e~ecrs D2-OB\Vauxc Slre DWR-06\Ficuars\Srxucru~s IcciSrvcrlous.owc i

LEVEL III
ASSESSMENT

ENGINEERING $c HYDROGEOLOGY
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL. [phone] FAC.828.281.3351
www. altamontenvironmental. com
August 21, 2007
Ms. Sandra Reid
District Administrator
Polk County Soil & Water Conservation District
P.O Box 236
#4 Annex Building
Columbus, North Carolina 28722
Re: Level III Assessment of Stream Condition
DWR Project 06-North Pacolet River /Young and Morgan Properties
Little House Road
Tryon, NC 28722
Dear Ms. Reid:
Altamont Environmental Inc. (Altamont) has completed a Level III Assessment of existing conditions on
the subject stream reach in this evaluation and has analyzed the stream's departure from its full natural
potential. The procedures used were consistent with those outlined in the Apri12003 North Carolina
Agricultural Cost Share Program (NCACSP) Manual. This letter documents the background information
on this project as well as the results of the Level III Assessment.
BACKGROUND
The Polk County Soil and Water Conservation District (SWCD) received a grant from the North Carolina
Department of Environment and Natural Resources (DENR), Division of Water Resources (DWR) to
stabilize eroding streambanks at seven different sites in Polk County. To secure the grant, SWCD staff
inventoried the damage at the seven sites and obtained preliminary approval from the. landowners for the
proposed repairs. However, because detailed assessments were not completed upon receiving the grant,
the SWCD retained Altamont to complete a detailed assessment of each site, design repairs for the
damaged areas and submit the designs to the United States Army Corps of Engineers (USAGE) and the
North Carolina Department of Environment and Natural Resources (DENR) for permitting in the form of
aPre-Construction Notification (PCN) for the projects.
Although the SWCD desires to incorporate natural channel design elements into the repairs, where
possible, detailed natural channel design procedures are beyond the scope of this project. As an initial
step, a Level III assessment was completed for each reach to quantify the impacts and establish a basis
for the design of the stabilization measures.
The project area is located in the North Pacolet River valley and is oriented in an east-west direction
approximately one mile east of the escarpment that marks the boundary between the Blue Ridge
Mountain and Piedmont physiographic regions. The project area consists of 3001inear feet along the
North Pacolet River and ISO linear feet of an unnamed tributary that joins the North Pacolet River within
the project area.
P:\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young Level III Letter.doc

Ms. Ried
August 21, 2007
Page 2 of 5
Along the North Pacolet River a vertical eroding cut bank exists on river right and is virtually bare of
vegetation. The upstream end of the project area is the upstream end of the cut bank and the downstream
end of the project area is marked by prominent rock outcroppings on river right just downstream of the
cut bank mentioned above.
A small drainage /tributary enters the North Pacolet River from river right in the middle of the project
area. The tributary and its channel have been highly modified from a natural condition in that it has been
deepened, widened, and vegetation has been prohibited from growing on it's banks. The tributary is
presently a baron ditch. Photos of the tributary are attached and a longitudinal profile and cross-section
are attached. Level III Assessment forms were not completed for the tributary due to it's apparent
condition.
Bank stabilization measures and riparian restoration should address both sides of the 150-foot tributary
and 300 feet of vertical bank on river right along the North Pacolet River. Riparian enhancement and
native planting should address 450 feet linear feet stream corridor along both sides of the tributary and
the North Pacolet River.
LEVEL III ASSESSMENT
On July 27, 2007 Altamont representatives analyzed the condition of the River and the tributary. During
the assessment, Altamont utilized various documents to collect field data , including: a Level III
Assessment form (from page V-84 of the NCACSP Manual), a Stream Survey Data Sheet, a Qualitative
Riparian Vegetation Assessment Guide, a Channel Stability Rating form, and a Bank Erosion Hazard
Index form. Copies of these completed documents are attached. Also attached are longitudinal profiles,
cross-sections, and photographs of the assessed reaches of the North Pacolet River and it's tributary.
The tributary within the project area is classified as a GS stream using the Rosgen Classification of
Natural Rivers. Within the project area the tributary has been. highly modified from its natural. state by
home and road building, excavation, mowing and by use of herbicides on its banks. The North Pacolet
River within the project area is classified as a C3 stream.
The following paragraphs provide supplemental information and support the data included on the
attached forms. The bold and underlined text corresponds to specific fields on the Level III Assessment
sheet.
Riparian Vegetation within the project area is generally in poor condition. Narrowing of the corridor
by mowing to the top of stream banks, tree clearing, bank erosion, use of herbicides and an abundance of
exotic invasive plants (e.g. English Ivy and Kudzu) appear to be responsible for the degraded quality of
vegetation. Bank erosion has affected riparian vegetation growth on streambanks at many locations. In
areas where stream banks are vertical, vegetation is non-existent and these banks are actively
contributing sediment to the tributary, and the North Pacolet River. These factors have had an adverse
effects on the stream channels, water quality and riparian vegetation in the stream corridor. Please refer
to the Qualitative Riparian Vegetation Assessment Guide sheet in the attachment for more detail.
P:\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young Level III Letter.doc

Ms. Ried
August 21, 2007
Page 3 of 5
Stream Size can be defined by several parameters. For this project, an estimated stream size (cross-
sectional area at bankfull stage in square feet (ftz)) using the regional curve for rural Piedmont North
Carolina Streams (Harman, W.H, et al, 1999). Specifically, the cross-sectional area was estimated by
comparing the approximate drainage area to the bankfull cross-sectional area shown on the regional
curve. Based upon this evaluation, the bankfull cross-sectional area for a stream with a drainage area the
size of the North Pacolet River should fall between 130 and 350 ft2. The actual bankfull cross-sectional
area measured in the project reach along the North Pacolet River is approximately 212 ft2.
Cross-sectional area at bankfull stage, bankfull width, and average bankfull depth, as measured in the
field, are represented in the attached cross sections of the North Pacolet River and Stream Survey Data
Sheet.
The Stream Order of the North Pacolet River is third order. A third order stream is defined as a stream
in which two or more second order streams have converged.
The Meander Pattern of the tributary can be qualitatively described as meandering. However
topography and bedrock influence the pattern of the stream. Meander Length or wavelength was not
measured due to the short length of the project reach. The Radius of Curvature for the meander bend
located in the project area was measured to be 43 feet. Average Belt Width and Sinuosi were not
calculated due to the short project reach length and detailed assessment of meander pattern is typically
completed to aid. in natural channel design, which is beyond the scope of this project.
A Channel Stability Rating was calculated using the Pfankuch rating procedure (see the Pfankuch
Channel Stability Rating Sheet which is included in the attachment). The Channel Stability Rating score
for the assessed reach was calculated to be 122, which falls in the Poor/ Unstable category for a stream
reach classified as C3.
Sediment Supply determinations were made by using a Bank Erosion Hazard Index (BEHI) method and
near bank stress estimations based on channel pattern and cross-sectional shape observed in the field.
Based on this assessment, the sediment supply to the river in the project area is classified as high. Near
Bank Stress was observed to be high; particularly on the outside of the meander bend at the location of
the cut bank where flow is forced into the poorly vegetated streambank where the failing non-vegetated
banks exist (see photographs and descriptions in the attachment). The Streambank Erosion Potential
was found to be high based on assessment by the Bank Erosion Hazard Index (BEHI) method and a BEHI
score of 39 was determined.
5treambed (Vertical) Stability was found to be stable based on the Entrenchment Ratio of the stream at
this time. The Width/Depth Ratio Condition was found to be moderate to high. Based on field
measurements the bankfull Width is calculated to be 70 feet, the mean bankfull Depth is 3.03 feet and
the Width/Depth Ratio is 23.1 feet [feet.
As discussed, the Stream Type for the tributary is GS and is C3 for the North Pacolet River. Stream
Classifications are based Entrenchment Ratio, Width/Depth Ratio, Sinuosity, Stream Type, Slope and
Channel Material.
P:\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young Level III Letter.doc

Ms. Ried
August 21, 2007
Page 4 of 5
The Flow Resime within the project area along the North Pacolet River is moderately altered and
somewhat unstable. The Depositional Pattern in the North Pacolet channel within the project area
appears to be normal and this may be attributed to relatively low amounts of development upstream and
protection offered by the rivers designation as "C;Tr" waters.
Evidence of Debris Blockages were observed in the North Pacolet during the field assessment as stumps
that have been cut from trees that have fallen into the river channel due to under cut banks. A
longitudinal Profile of both the stream channels was completed. Using the profile surveys Water
Surface Slope and Valley Slope were calculated. Bed Features and their relationships were identified
in the field and on the longitudinal profiles. Features such as Steps, Pools, and Riffles, and
Convergance/Diver~ance of the stream flow were noted and entered on the Level III assessment sheet.
The channels do not exhibit a Plane Bed . Pool/riffle Spacing can be viewed on the longitudinal profiles
included as Figure 2 in the attachment. Also included in the attachment are several cross-sections
produced from data collected during the assessment of the project reaches.
The SWCD estimated that approximately 250 feet of streambanks in the project area are in need of
stabilization. While conducting the Level III assessment of the project, Altamont observed and measured
approximately 450 linear feet of streambanks that are in need of repair including benching, softening of
slope, incorporating rock structure and re-vegetation. Specifically Altamont recommends clearing the
English Ivy from the banks of the tributary, creating a small floodplain bench and softening the slopes of
the banks to 3:1 (H:V). After constructing the benches and the desired slopes, the banks should be re-
vegetated with a variety of native herbaceous plants, shrubs, and trees.
Altamont recommends installing 3 or 4 rock J-hook vanes along the cut bank on river right of the North
Pacolet River, creation of a floodplain bench and sloping the bank inland of the bench to 3:1 (H:V).
During construction exotic invasive plants should be removed. Re-vegetation of the project area on river
right with native varieties of herbaceous plants, shrubs and tree species will be essential to stabilizing the
area and protecting the Young and Morgan properties from accelerated channel migration during high
flows. Furthermore Altamont recommends enhancing riparian vegetation on river left where mown grass
exists to the waters edge by planting native riparian trees and shrubs in the form of live stakes and
container plants.
P:\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young Level III Letter.doc

Ms. Ried
August 21, 2007
Page 5 of 5
Altamont appreciates the opportunity to provide these assessments and recommendations to the SWCD
for this project. Please feel free to contact us with any questions or comments.
Sincerely, ,. ,~-,,
j d~:
Joel D. Le , P.G.
Attachments: Level III Assessment Form
Stream Survey Data Form
Qualitative Riparian Assessment Guide
Phankuch Channel Stability Rating Sheet
BEHI Evaluation Sheet
Figures
Photographs and Descriptions
P:\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young Level III Letter.doc

STREAM SURVEY
GUIDANCE FORMS

LEVEL III; ASSESSMENT OF STREAM Ct)NDil'ION ANE3 DEPARTURE
SUMMARY OF "CONDITION" CATEGORIES FOR LEVEL III INVENTORY
Stream Name North Pacolet River
Location Young and Morgan Properties, Tryon NC
Riparian Vegetation Poor. Narrow Corridor. Invasives
Stream Size, Stream order 212 ftZ, third order
Meander pattem Meandering
Channel stability rating (Pfankuch) 122, Poor
Sediment supply (check appropriate category):
Extreme
Very High
High x
Moderate
Low
Streambed (vertical) stability
Aggrading
Degrading
Stable x
Width/depth ratio condition:
-Mort{st~bie) x
High
Very high
Streambank erosion Potential:
Bank erodibiii#y: Near-bank stress:
Extreme Extreme
High x High x
Moderate Moderate
Low Low
General Remarks
Observers Lenk, Yurkovich
Stream Type C3 Date 7/27/2007
Flow regime moderately altered and unstable
Depositional pattern normal
Debris/channel blockages evidence of east and potential
Altered Channel State: sliehtly entrenched/Unst~o
Dimensionishape:
Width 70 feet
Depth 3.03 feet
Width/depth ratio 23.1
Patterns: (*show as funct, of Wbkf):
Meander length" NM
Radius of curve" 43
Belt width" NM
Sinuosity NM
Profile:
Water surface slope 0.006
V~itey Scope 0.008
Bed features:
Riffle/pool x
Step/pool
Conver./divrg. x
Plane bed
Other
Spacing'` See Figure 2
Describe alterations:
Attach photographs taken mid-stream looking up and downstream. Make site map.
Attach vicinity map of reach and/or aerial photo for specific location.
Note any permanent cross-section for level IV verification of cross-section stability, actual erosion rates,
change in pebble counts, deposition studies, sediment sampling, etc.
Attach copy of: stream classifcation field form, channel Stability rating form; bank erosion rating form,
profiles, cross-sections, pebble counts, etc.
Signature:
NCACSP MANUAL, APRIL 2003 PAGE V-84

Stream Survey Data-Sheet
Site DWR 06-North Pacolet River and Tributary /Young and Morgan Properties -Date 7/27/2007
Survey Crew Lenk, Yurkovich Note: Values collected from representative cross-sections measured in damaged areas of riffles
of the North Pacolet River.
Riffle Cross-Section:
Area at Bankfull, Asp (ft2) 212
Width at Bankfull, Wb,~ (ft) 70
Width Flood Prone Area, W~,a (ft) 241
Maximum Depth Bankfull, DUX (ft) 3.96
Max Depth Top Low Bank, DTOB (ft) 4.84
s.
Mean Depth at Bankfull, Db~ = Abp / Wb~ (ft) 3.03
Entrenchment Ratio, ER = W~,a J Wb~ (ft/ft) 3.44
Width to Depth Ratio, W/D = Wb~ / Db~ (ftlft) 23.1
Bank Height Ratio, BFiR = D Tos / D,~~ (ft/ft) 1.22
Max Depth Ratio = DUX / Db,~ (ft/ft) 1.31
Longitudinal Profile (minimum of 20 X bankfull width):
Length of Channel Thalweg, Ll,,. (ft) 300 Slope of Channel, Sa„e = AELEV / L~,~, (ftlft) .006
Length of Valley, ivauey (ft) 222 Sinuosity, K = Ll,,, / I-,~avey (ft/ft) 1.35
Elevation Change (head first riffle to head last riffle), 4ELEV (ft) 1.47
Pool Cross Section:
Pool Area at Bankfull, A.Pool (ft2) 196
Pool Width at Bankfull, Wooll (ft) 53
Pool Max Depth Bankfull, DPool (ft) 7.74
Pool Area Ratio = A_pool / Ab,~ (ft2/ft2) 0.92
Pool Width Ratio = W Pool / Wb,a (ft/ft) 0.75
Pool Max Depth Ratio = DPI / Db~ (ft/ft) 2.55
Pattern Survey (minimum of 2 wavelengths, list ranges of measurements):
Meander Wavelength, Lm (ft) NM Meander Wavelength Ratio = Lm / Wb,~ (ft/ft) NA
Meander Belt Width, Wblt (ft) NM Meander Width Ratio = Wbl, / Wb~ (ft/ft) NA
' Radius of Curvature, ~ (ft) 20 Radius of Curvature Ratio = ~ / Wb~ (ft/ft) NA
Pebble Count Results (reachwide):
Median Particle Size, d50 (mm) NM (estimated cobble)
Rosgen Stream Classification: C3
Note: NM means Not Measured

Qualitative Riparian Vegetation Assessment Guide
Preliminary Assessment
Project name DWR-06 N. Pacolet R. / trib Date 7/27/2007 Proposed Project length 450 feet
Existing vegetation
Dominant tree species Sycamore, Poplar, Walnut, White Pine, Black Cherry, Black Locust
Size distribution of trees 30-70 ft, mostly mature, narrow riparian corridor, sparse.
Dominant shrub species Dogwood, Azalea,
Dominant herbaceous species variety of grasses, kudzu, Jewel Weed, English Ivy
Successional stage, disturbances,
or potential for natural change Mature trees and herbaceous plants, succession is limited by mowing.
Patchiness Vegetation is patchy along the streambanks
Visible stresses Mowing, urban impacts and bank erosion.
Bank Conditions
Bare banks Yes, a majority of the cut bank on river right is bare of vegetation.
Presence and density of large trees Lar e trees are not abundant however some do exist close to the to of b;
Angle and presence of undercuts cut bank on river right varies in angle between 70 and 110 degrees.
Material silty sand with abundant rounded river stones
Invasive presence kudzu, privet, english ivy
Patchiness vegetation is patchy due to mowing and erosion.
Land use
Wildlife Impacts or protection Residential area, not hunting, North Pacolet is "C;Tr"
Recreational Fishing, Back yard recreation
Official Designated trout water
Agricultural and grazing No
Mowing Yes
Herbicides Yes, in tributa
Other disturbances Urbanization
Soil
Composition (series if known) Silty sand and rounded river cobble, alluvium
CompactednesS Generally uncompacted
Fertility Moderately fertile
Organic material present on non erosional surfaces
Testing No
Construction planning
Potential for transplants No
Potential for tree fencing No
Invasive species Prive and ulti ra R se
Action recommended Y remo al du ~ng p ject oust ction
Dominates site N
Looming problem Y
Insignificant N
Sources surround site YY
ink.

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Bank Erosion Hazard Index
Site DWR 06-.North Pacolet River and Tributary /Young and Morgan Properties Date 7/27/2007
Survey Crew Lenk Yurkovich
Category. .Bank Ht
Ratio
(ft/ft) Root Depth
Ratio
(%) Root
Density
(%) Bank
Angle
(degrees) Surface
Protection
(%) Total
Index
Very Low Value 1.0 -1.1 100 - 80 100 - 80 0 -20 100 - 90
Index 1-2 1-2 1=2 1-2 1-2 <10
Low Value 1.1- 1.2 80 - 55 80 - 55 20 - 60 90 - 50
Index 2-4 2-4 2-4 2-4 2-4 10-20
Moderate Value 1.2 - 1.5 55 - 30 55 - 30 60 - 80 50 - 30
Index 4-6 4-6 4-6 4-6 4-6 20-30
High Value 1.5 - 2.0 30 - 15 30 - 15 80 - 90 30 -15
Index 6-8 6-8 6-8 6-8 6-8 30-40
Very Value 2.0-2.8 15-5 15-5 90-120 15-5
High Index 8-9 8-9 8-9 8-9 8-9 40-45
Extreme .Value > 2.8 < 5 < 5 > 120 < 5
Index 10 10 10 10 10 > 45
Field Value '122 _ ?0% 40% y0° ~ ~0'Y°
Measure Index 5 7 5 g . -~ 4- ,,g..
Total Field Index ~9
Numerical. Adjustments +10 Saud
Bedrock: BEHI Very Low
Boulders: BEHI Low
Cobble: Decrease by one category if graveUsand less than 50°Io
Gravel: Adjust Index up 5 - 10 points depending on sand %
Sand: Adjust Index up 10 points
Si1tlClay: No Adjustment
Stratification: Adjust Index up 5 - 10 points depending on position of unstable layers in
relation to bankfull stage ;
Adjusted BEHI 39!High

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. ~ i~ e i SITE VICINITY MAP FIGURE

~ENcINEERINC & HYDROGEOLOGY DWR 06- NORTH PACOLET RIVER
50 COLLEGE STREGT, :1SHEVILI,E, NC 28801
TEL.[phone] FAC.828.281.3351
& TRIBUTARY /YOUNG ~
www.altamontenvironmental.com M O R G A N P R O P E R T I E S

DRAWN BY: JOEL LENK SCALE (FEET) TRYON, POLK COUNTY, NC 28782
PROJECT MANAGER: STUART RYMAN
soo 0 50o
tooo
CLIENT: PCS&WCD
DATE: I-16-07

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MORGAN RESIDENCE
t
YOUNG RESIDENCE
SPRING ~°
HEAD OF TRIBUTARY
Legend
ACCESS ROAD
TRIBUTARY
r~,,~-,~ RIPARIAN ENHANCMENT AREA
STOCKPILE AREA
LIMITS OF DISTURBANCE
25-FOOT BUFFER
• ~ ~ PLAN VIEW OF FIGURE
PROJECT AREA
N I I H Y G ~"
~o~O~~E~ESTa>;ET"^S'~"a~r-"~zxx°1 DWR 06 - N. PACOLET RIVER 7
Tel. [phone] Fac. 828.281.3351
nmw.altamonrenvironmental.com TRIBUTARY /YOUNG & 4
MORGAN PROPERTIES
DRAWN BY: JOEL LENK SCALE POLK COUNTY, NC
PROJECT MANAGER: STU RYMAN Q 50 ~ ~~ ZOO
CLIENT: PCSWCD
DATE: OS/ 14/07 F@et P:\POLK SWCD NRCS1Polk DWR projects 02-081Young Sit~DWR-061Figures\FIG.4MXD

PHOTOS AND
DESCRIPTIONS

PHOTOGRAPHS & DESCRIPTIONS
DWR PROJECT 06-YOUNG PROPERTY,
NORTH PACOLET RIVER, POLK CONTY, NC
Photo 1. View south, showing eroding cut bank from poorly vegetated point bar in foreground.
The vegetated, shallower sloped bank in the upper right of the photo is near the upstream end of
the project area.
P:\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young photos for Level IILdoc

P:\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young photos for Level IILdoc
Photo 3. View southeast, sowing same bank as above, panning further downstream.

r it. Wit'' F
Photo 4. View east, showing same bank as above, panning further downstream. The rock
outcrop with Leland Cypress behind in the upper left of the photo is the downstream extent of the
P:\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young photos for Level III.doc
Photo 5. View northeast showing poorly vegetated banx on river tern.

Photo 7. View north of tributary as it approaches it's confluence with the North Pacolet River.
P:\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young photos for Level IILdoc

TROUT BUFFER
WAIVER REQUEST

ENGINEER 1 N G 8 H Y D R O G E O L O G Y
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL. [phone] Fac.828.281.3351
www. altamontenvironmental. com
August 21 2007
Mr. T. Gray Hauser, PE
State Sediment Specialist, Division of Land Resources
1612 Mail Service Center
Raleigh, NC 27699-1612
Subject: Trout Buffer Waiver Request
DWR -06-North Pacolet River /Young and Morgan Properties
streambank Stabilization Project
Polk County, North Carolina
Dear Mr. Hauser:
With this letter Altamont Environmental, Ina (Altamont) requests a Trout Buffer Waiver for the above
referenced project. The Polk County Soil and Water Conservation Board and Altamont are using grant
monies provided by the North Carolina Division of Water Resources (DWR) to complete this project.
The project is being implemented to stabilize a significantly impaired and rapidly eroding streambank on
the outside of a river bend on the North Pacolet River near Tryon, North Carolina. The streambank was
damaged by tropical storms in 2004 and subsequent high flow events. Access /Authorization agreements
have been signed by the two property owners whose land is being impacted by ongoing damage. The
attached agreements authorize Altamont to make this request on behalf of the property owners.
Specifically, the last line of the agreement (Section 10) authorizes Altamont, to sign and execute all
necessary permits and coordinate communications with the appropriate regulatory agencies.
Disturbed acreage for the referenced project will be no more than 0.40 acres. The site is located in the
Broad River Basin and the project reach of the North Pacolet River is classified as "C, Tr" by the North
Carolina Department of Environment and Natural Resources (DENR) and by The North Carolina
Wildlife Resources Commission (WRC). The project reach is approximately 350 linear feet in length.
The entire cut-bank side located on river right is in need of stabilization and is currently a 4-8 foot
vertical, non-vegetated bank. Altamont proposes stabilization of the cut bank as well as re-vegetation of
the point bar across the channel on river left. The point bar is void of riparian vegetation and consists of
mown fescue and similar grasses.
Enclosed is a Level III Assessment of the project area and the Pre-Construction Notification (PCN) for
the referenced project. The total disturbed area exceeds the permitting threshold of 100 contiguous feet
of disturbed riparian area in trout waters. For this reason a Trout Buffer Waiver is being requested. We
do not anticipate the need for a formal Erosion and Sediment Control Plan in order to proceed with bank
stabilization because, the project will not create greater than one acre of total disturbed area. However,
proper sediment and erosion control practices will be employed throughout construction of the project.
P:\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young Trout Waiver Request Letter.doc

Mr. Gray Hauser
August 21, 2007
Page 2 of 3
The project will utilize the following materials to stabilize the cut bank:
• Adeep-rooted herbaceous riparian seed mix (Ernst Conservation Seeds, Riparian Buffer Mix
ENRMX-178).
• A variety of native riparian live stake, bare root, and containerized trees and shrubs.
• 980 g/m2-weight coir matting
• Hand-selected large angular rock, of dimensions no smaller than 3 feet by 3 feet by 4 feet, for
the construction of Single and J-hook vanes.
Construction details for bank stabilization are included in the PCN.
Calculations used to estimate shear stress at elevations above the channel thalweg (i.e. the deepest point
of the channel) are attached along with a table showing allowable shear stresses for materials planned for
use in the project. A conservative approach was used to estimate shear stress, which involved calculating
shear stress for elevations at intervals above the channel thalweg to the top of the low bank. Shear
stresses were calculated at a measured cross section (Figure 3), for both straight and sinuous channels.
In order to calculate shear stress for the sinuous channel, the radius of curvature of the river bend was
measured. The measured cross section shown on Figure 3 lies within the river bend. The radius of
curvature for the river bend in the project was measured to be 43 feet and was then used to predict the
shear stress at each elevation (1, 2, 3, 4, and 4.9 feet) for the sinuous channel flow. As shown in the table
the maximum estimated shear stresses for the sinuous channel at 4 feet and 4.9 feet above the channel
thalweg is 3.8 and 4.7 pounds per square foot (lb/sq ft), respectively. Specified permissible shear stresses
for the proposed materials are as follows:
• coir roll - 3-5 psf
• large angular rock - 10.1 psf
Therefore the estimated shear stresses do not exceed the specified values of permissible shear stress for
the materials.
The mean depth at bankfull (Db~), as calculated in a riffle cross-section on North Pacolet River, was 3.03
feet above the channel thalweg. This flow can be expected to occur, on average once every 1.5 years
(Rosgen Stream-Classification System (Rosgen 1996))and corresponds to a shear stress of approximately
2.2 psf., which is will below the permissible shear stress specified for the proposed materials.
The contractor selected to construct this project will be required to use standard erosion control measures
to minimize environmental impacts related to land disturbing activities. Work within the stream buffer
will be performed using proper construction sequencing to minimize the production of sediment and
other pollutants. Each segment of work undertaken will be stabilized at the end of each workday using
erosion control cover. Equipment staging areas will be situated at least 25 feet from the top of the
streambank. All materials will be on hand prior to beginning construction. All work will be done in
accordance with the 404 and 401 permits issued for the project.
P:\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young Trout Waiver Request Letter.doc

Mr. Gray Hauser
August 21, 2007
Page 3 of 3
The Polk County Soil and Water Conservation District and Altamont appreciate your assistance with this
project. If you have any questions or need additional information, please do not hesitate to contact me.
Sinc ~~-
,~°'~
Joel D. Le ;~ .G.
Attachments: Access Agreement/Agent Authorization Letter
Figure L Vicinity Map
Figure 2. Stream Profiles
Figure 3. Stream Cross-Sections
Figure 4. Plan View of Project Area
Shear Stress Design Calculations
Copy of Pre-Construction Notification (Text Only)
cc: Sandra Reid -Polk County District Administrator (Letter Only)
P;\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young Trout Waiver Request Letter.doc

LETTERS OF
ACCESS /AUTHORIZATION

ACCESS AGREEMENT
This Access Agreement is made between Polk County Soil and Water Conservation
District Supervisor Board (SWCD) and:
Owner:

The SWCD is requesting access to the property for the purpose of assessing and repairing
damage to the streambank, stream channel, and floodplain that was caused by hurricanes
Frances and Ivan and more recent storms. The repair work will include some or all of the
following elements:
-Streambank Stabilization -Native plant Re-vegetation
-Debris Removal -Exotic/Invasive plant removal
SWCD and the Property Owner agree:
1. Property owner grants permission to SWCD and its contractors and agents to
enter upon their land for the purpose of assessing and repairing the flood damage
caused by Hurricanes Frances and Ivan. Additionally, this agreement includes the
right of ingress and egress on the land for the purpose of maintaining the
emergency works for the period of one year from the date of completion.
2. Property owner grants permission to SWCD and its contractors aild agent to
conduct stream stabilization measures, which may include debris removal, stream
bank stabilization using rocks, wood, and/or, mulching and seeding, and/or
channel relocation.
~. SW('Tl agreP3 to ~crnply ~x~it12 ln~al~ ctate~ ~nrl federal jaiug applicable t~ tl~e work
and further agrees to exercise due care and caution in the performance of all work
on the Property.
4. This Agreement constitutes the entire understanding between the parties. All
prior agreements or understandings, whether oral or written, are superseded. This
Agreement may be amended only by a written document duly executed by the
parties.
5. The proposed measures are intended to repair flood damage to the stream and to
return affected areas to pre-flood conditions. Repair and/or improvements to
structures are not part of this project. Damaged bridges, driveways, and eroded
fields are not addressed by measures. SWCD and its contractors will strive to
minimize impacts to adjacent properties. However, some impact may be
unavoidable. The Property owner releases SWCD and its contractors from
liability for any damage incurred as result of this work.
6. This agreement does not provide confirmation that the subject site is eligible for
Emergency Funds, nor does it encumber funds for any repair work at this site.
7. Property owner agrees not to remove or modify construction repairs, including
vegetation, for one year from the date of completion.

8. SWCD will discuss the draft design with.the Property Owner prior to submittal
for permitting.
9. Property Owner agrees to reimburse SWCD for all costs associated with the
design if the property owner decides to terminate this agreement after work has
begun.
10. The Polk County Soil and Water conservation District and Polk County property
owners hereby authorize Altamont Environmental Inc. (Agent/Consultant) to sign
and execute all necessary permits and coordinate communications with the
appropriate regulatory agencies.
Polk County Soil and Water Conservation District

Date: ~ ~ ' ~2f~ '~'~„
SWCD or eprese ive
o ~~
By: ~-~- sr
Date: 1~ - 2~-n~~
Property Owner
~ ~ ; ~,
_ ~C.~ <~
Date: ~ - `~ ~~

ACCESS AGREEMENT
This Access Agreement is made between Polk County Soil and Water Conservation
District Supervisor.BQard (SWCD) and:
Owner: `re
~ ~~
Street Address: / 1 w~~~-~-/o ,C„~g~~f~'a o ~\
r
The SWCD is requesting access to the property for the purpose of assessing and repairing
damage to the streambank, stream channel, and floodplain that was caused by hurricanes
Frances and Ivan and more recent storms. The repair work will include some or all of the
following elements:
-Streambank Stabilization
-Debris Removal
-Native plant Re-vegetation
-Exotic/Invasive plant removal
SWCD and the Property Ovr.:er agree:
1. Property owner grants permission to SWCD and its contractors and agents to
enter upon their land for the purpose of assessing and repairing the flood damage
caused by Hurricanes Frances and Ivan. Additionally, this agreement includes the
right of ingress and egress on the land for the purpose of maintaining the
emergency works for the period of one year from the date of completion.
2. Property owner grants permission to SWCD and its contractors and agent to
conduct stream stabilization measures, which may include debris removal, stream
bank stabilization using rocks, wood, and/or, mulching and seeding, and/or
channel relocation.
3. SWCD agrees to comply with local, state, and federal laws applicable to the work,
and further agrees to exercise due care and caution in the performance of all work
on the Property.
4. This Agreement constitutes the entire understanding between the parties. All
prior agreements or understandings, whether oral or written, are superseded. This
Agreement may be amended only by a written document duly executed by the
parties.
5. The proposed measures are intended to repair flood damage to the stream and to
return affected areas to pre-flood conditions. Repair and/or improvements to
structures are not part of this project. Damaged bridges, driveways, and eroded
fields are not addressed by measures. SWCD and its contractors will strive to
minimize impacts to adjacent properties. However, some impact may be
unavoidable. The Property owner releases SWCD and its contractors from
liability for any damage incurred as result of this work.
6. This agreement does not provide confirmation that the subject site is eligible for
Emergency Funds, nor does it encumber funds for any repair work at this site.
7. Property owner agrees not to remove or modify construction repairs, including
vegetation, for one year from the date of completion.

8. SWCD will discuss the draft design with the Property Owner prior to submittal
for permitting.
9. Property Owner agrees to reimburse SWCD for all costs associated with the
design if the property owner decides to terminate this agreement after work has
begun.
10. The Polk County Soil and Water conservation District and Polk County property
owners hereby authorize Altamont Environmental Inc. (Agent/Consultant) to sign
and execute all necessary permits and coordinate communications with the
appropriate regulatory agencies.
Polk County Soil and Water Conservation District
By:
SWC ~ or R re ative
By~
r ~
Date: ~ Z
Date:
Prope Qwner
B ~ ~.
Date: ~.. 2,,~ ~Q

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ENGINEERING & HYDROCEOLOGY DWR 06- NORTH PACOLET RIVER
50 COLLEGE STREET, ASI-IEVII.LE, NC 28801
TEL828.281.~sso EAC828.281.3~sI
8, TRIBUTARY /YOUNG &
www. alta~nontenvironmental. com
MORGAN PROPERTIES
DRAWN BY: JOEL LENK SCALE (FEET) TRYON, POLK COUNTY, NC 28782
PROJECT MANAGER: STUART RYMAN
CLIENT: PCS&WCD 500 o soo 1000
DATE: I-16-07

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`All.ry
MORGAN RESIDENCE
Y
RI COLLEGE STREET. ASHEVILLE. NC 28801
Tel, 828.281.3350 Fac. 828.281.3351
-altamontenvitonmemal.com
DRAWN BY: JOEL LENKI SCALE
PROJECT MANAGER: STU RYMAN 0 50 00
CLIENT: PCSWCD
DATE: 08/14/07
YOUNG RESIDENCE
SPRING &
HEAD OF TRIBUTARY
Legend
ACCESS ROAD
TRIBUTARY
RIPARIAN ENHANCMENT AREA
STOCKPILE AREA
LIMITS OF DISTURBANCE
25 -FOOT BUFFER
PLAN VIEW OF FIGURE
PROJECT AREA
DWR 06 - N. PACOLET RIVER 7
TRIBUTARY / YOUNG &
MORGAN PROPERTIES 4
POLK COUNTY, NC
200
0 Feet P:\POLK SWCD NRCSTolk DWR projects 02-08\Young Site-DWR-06lFiguresTIG.4MXD

SHEAR STRESS
CALCULATIONS

DWR 06-NORTH PACOLET RIVER /YOUNG AND MORGAN
PROPERTIES SHEAR STRESS CALCULATIONS
Calculste shear stress using z = yRH S
where: y = 62.41b/ft3 (density of water)
RH =hydraulic radius (ft)
S =average stream slope (ft/ft)
Calculate shear stress for depths up to the top of low bank. Using channel dimensions
from across-section measured in the field with the proposed 3:1 (H:V) slope on the
streambank (see attached cross-section), calculate hydraulic radius for the following
depth conditions (Note: depth measured from the channel thalweg). Shear stress was
calculated for depths of: 1, 2, 3, 4, and 4.9 (elevation of top of low bank) feet above the
channel thalweg to the elevation of the top of the low bank.
Set S = 1.47 ft (elevation difference, head of first riffle to head of last riffle) / 254 ft
(length of thalweg) = 0.006 ft/ft (based on measurements made in the field)
Calculate shear stresses for the straight channel.
RH =
Area
Wetted Perimeter (WP)
Straight
Proposed Cross- Wetted Hydraulic Top Width Channel Shear
Elevation (ft) Sectional Area (sf) Perimeter (ft) Radius (ft) of Channel Stress (Ib/ft2)
1 41.1 51.6 0.8 51.3 0.3
2 94.1 54.5 1.7 54.8 0.6
3 152.2 67.2 2.3 39.8 0.8
4 223.6 79.6 2.8 78.3 1.1
4.9 299.3 93.9 3.2 93.3 1.2
4.9 feet is the channel depth at top of the existing low bank
Dhkf(mean depth at bankfull flow=3.03=Calculated from field measurements.
P:\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young Sheaz stress calculations.doc Page 1 oft

Permissible shear stress for large angular rock at toe of slope =10.1 lb/ftz (attached table)
Permissible shear stress for coir matting on streambank = 3 - S lb/ftz (attached Table)
Adjust calculated shear stress values to account for channel sinuosity.
(Equation 10 of "Stability Thresholds for Stream Restoration Materials - ERDC TN-
EMRRP-SR-29" prepared by Craig Fischenich of the USACE Research and
Development Center, Environmental Laboratory, 3909 Halls Ferry Rd, Vicksburg, MS
39180, May 2001)
-0.5
Tmax = 2.652
Re =Radius of Curvature
Re = 50 feet (see Figure 2)
W =Top Width of Channel
W =top widths of channel at depths of 1,2,3,4, and 4.9 feet indicated on the table above.
Straight Channel Max Shear Stress for
Elevation (ft) Shear Stress (lb/ft2) Sinuous Channel (]b/ft2)
1 0.3 0.9
2 0.6 1.9
3 0.8 2.2
4 1.1 3.8
4.9 1.2 4.7
Permissible shear stress for large angular rock at toe of slope =10.1 psf (see attached
Table)
Permissible shear stress for coir matting on streambank = 3 - 5 psf (see attached Table)
Permissible shear stress for live fascine on streambank =1.25-3.10 psf (see attached
Table)
P:\Polk SWCD NRCS\Polk DWR projects 02-08\Young Site-DWR-06\Young Sheaz stress calculations.doc Page 2 oft

r
f
r
:,
/
/
oil
Gravell Cobble
Vegetation
Fine colloidal sand
Sandy loam (noncolloidal)
Alluvial silt (noncolloidal)
Silty loam (noncolloidal)
Firm loam
Fine gravels
Stiff clay
Alluvial silt (colloidal)
Graded loam to cobbles
Graded silts to cobbles
Shales and hardpan
1-in.
2-in.
6-in.
12-in.
Class A turf
Class B turf
Class C turf
Materials'
0.02 - 0.03
0.03 - 0.04
0.045 - 0.05
0.045 - 0.05
0.075
0.075
0.26
0.26
0.38
0.43
0.67
0.33
o.s7
2.0
4.0
3.7
2.1
1.0
1.5
1.75
2
1.75 - 2.25
2.5
2.5
3 - 4.5
3.75
3.75
4
6
2.5 - 5
3-6
4 - 7.5
5.5 - 12
6-8
4-7
3.5
A
A
A
A
A
A
A, F
A
A
A
A
A
A
A
A
E, N
E, N
E, N
Long native grasses 1.2 - 1.7 4 - 6 G, H, L, N
Short native and bunch grass 0.7 - 0.95 3 - 4 G, H, L, N
Reed plantings 0.1-0.6 N/A E, N
Hardwood tree plantings 0.41-2.5 N/A E, N
Temporary Degradable RECPs Jute net 0.45 1 - 2.5 E, H, M
Straw with net 1.5 - 1.65 1 - 3 E, H, M
Coconut fiber with net 2.25 3 - 4 E, M
Fiberglass roving 2.00 2.5 - 7 E, H, M
Non-Dearadable RECPs Unvegetated 3.00 5 - 7 E, G, M
Partially established 4.0-6.0 7.5 - 15 E, G, M
Fully vegetated 8.00 8 - 21 F, L, M
Riprap 6 - in. d50 2.5 5 - 10 H
9 - in. dso 3.8 7 - 11 H
. 12-in.d~ 5.1 10-13 H
18-in.d~ 7.6 12-16 H
24-in.d~ 10.1 14-18 E
Soi/ Bioengineering Wattles 0.2 - 1.0 3 C, I, J, N
Reed fascine 0.6-1.25 5 E
~j Coir roll 3 - 5 8 E, M, N
Vegetated coir mat 4 - 8 9.5 E, M, N
Live brush mattress (initial) 0.4 - 4.1 4 B, E, I
Live brush mattress (grown) 3.90-8.2 12 B, C, E, I, N
Brush layering (initial/grown) 0.4 - 6.25 12 E, I, N
Live fascine 1.25-3.10 6 - 8 C, E, I, J
Live willow stakes 2.10-3.10 3 -10 E, N, O
Hard Surfacing Gabions 10 14 - 19 D
Concrete 12.5 >18 H
Ranges of values generally reflect multiple sources of data or different testing conditions.
A Chang, H.H. {1988). F. Julien, P.Y. (1995). K Sprague, C.J. ( 1999}.
B. Florineth. (1982) G. Kouwen, N.; Li, R. M.; and Simons, D.B., (1980) . L. Temple, D.M. (1980).
C. Gerstgraser, C. (1998). H. Norman, J. N. (1975). M. TXDOT (1999)
D: Goff, K. (1999): I. Schiechtl, H. M. and R. Stem. (1 996). N. Data from Author (2001)
E Gray, D.H., and Sotir, R.B. (1996). J. Schokli~ch, A. (1937). O. USACE (1997).
ERDC TN-EMRRP SR 29
5

PRE-CONSTRUCTION
NOTIFICATION (TEXT ONLY)

ALTAMONT ENVIRONMENTAL, INC.
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL. [phone] Fac.828.281.3351
www. altamontenvironmental. com
August 21, 2007
Mr. Steve Chapin
US Army Corps of Engineers
151 Patton Avenue, Room 208
Asheville, NC 28801-5006
Ms. Cyndi Karoly
NCDENR, Division of Water Quality
401 Wetlands Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Mr. Kevin Barnett Mr. David McHenry
NCDENR, Division of Water Quality NC Wildlife Resource Commission
Asheville Regional Office 20830 Great Smoky Mountain Expressway
2090 U.S. Highway 70 Waynesville, NC 28786
Swannanoa, NC 28778
Subject: streambank Stabilization
DWR Project 06-North Pacolet River /Young and Morgan Properties
Polk County, North Carolina
Dear Messrs. Chapin, Barnett, and McHenry and Ms. Karoly:
Enclosed please find the pre-construction notification (PCN) for streambank stabilization located in Polk
County along property owned by Loraine Young and Perry Morgan. The work applied for in this permit
consists of streambank stabilization and debris removal.
The project site has been identified by the Polk County Soil and Water Conservation District as one area
eligible for North Carolina Department of Environment and Natural Resources (DENR), Division of
Water Resources (DWR) Water Resources Development Project Grant funding. The State of North
Carolina has recently provided funding through the DWR for damaged areas that were not addressed by
the federal Emergency Watershed Protection (EWP) program.
The project area consists of approximately 350 linear feet of streambank located along the North Pacolet
River and 150 linear feet of unnamed tributary in the community of Tryon in Polk County, NC. A site
vicinity map is included as Figure 1 of the attached PCN document. The North Pacolet River is
classified by the DENR as class "C;Tr" waters throughout the entire project area. A Trout Buffer Waiver
Request has been sent to Mr. Houser, State Sediment Specialist for the Division of Land Resources in
Raleigh, NC.
As an authorized agent for Polk County and the property owners, I have signed the application. Letters
of access /authorization are attached at the end of the PCN document.
P:\Polk SWCD NRCS\Polk DWR nroiects 02-08\Youne Site-DWR-06\YounQ PCN cover letter.doc

Mssrs. Chapin, Barnett, Karoly, McHenry
August 21, 2007
Page 2 of 2
We appreciate your review of this application. If you have and question or need additional information,
please contact me.
Sincerely,
~f ~/
~....
` Joel D. Le , P.G.
enclosures: Check for permit fee (Karoly only)
PCN- DWR Project 08-Tributary to Hooper Creek / Myers and Ketcham Properties
Letters of Access /Authorization
Figures
Stream Structure Illustrations
Copy of Level III Assessment
Copy of Trout Buffer Waiver Request
cc (letter only): Polk County Soil and Water Conservation District
P:\Polk SWCD NRCS\Polk DWR nroiects 02-08\Youne Site-DWR-06\Youne PCN cover letter.doc