HomeMy WebLinkAbout20071448 Ver 1_401 Application_20070807ENGINEERING & H Y D R O G E O L O GY
SO COLLEGE STREET, ASHEVILLE, NC 28801
TEL. 828.281.3350 Fac.828.281.3351
www.altamontenvironmental.com
August 22, 2007
Mr. Steve Chapin
US Army Corps of Engineers
151 Patton Avenue, Room 208
Asheville, NC 28801-5006
Mr. Kevin Barnett
NCDENR, Division of Water Quality
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa, NC 28778
p 7- 1 4 4 8
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Ms. Cyndi Karoly
NCDENR, Division of Water Quality
401 Wetlands Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Mr. David McHenry
NC Wildlife Resource Commission
20830 Great Smoky Mountain Expressway
Waynesville, NC 28786
Subject: Streambank Stabilization
DWR Project 08-Tributary to Hooper Creek/ Myers and Ketcham 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 on properties
owned by Deborah Myers and by William and Linda Ketcham located in Polk County. Work applied for
in this permit includes Streambank stabilization and debris removal
The project site has been identified by the Polk County Soil and Water Conservation District (SWCD) 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 2,3001inear feet of streambank located along a tributary to
Hooper Creek in southeastern Polk County. A site vicinity map is included as Figure 1 of the attached
PCN document. The tributary is classified by the DENR as class "C" waters throughout the project area.
I have signed the application as an authorized agent for Polk County and the property owners. A letter
of access /authorization is attached at the end of the PCN document.
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P:\Polk SWCD NRCS\Polk DWR nroiects 02-08\Mvers Site-DWR-08\Mvers PCN cover letter.doc
Mssrs. Chapin, Barnett, Karoly, McHenry
August 22, 2007
Page 2 of 2
We appreciate your review of this application. If you have any questions or would like additional
information, please contact me.
incerely,
Jc~sl' b. Lenk, .G.
enclosures: Check for permit fee (Karoly only)
PCN- DWR Project 08-Tributary to Hooper Creek / Myers and Ketcham Properties
Access /Authorization Agreements
Figure 1-Site Vicinity Map
Figure 2-Stream Longitudinal Profile
Figure 3-Stream Cross-sections
Stream Structure Illustrations
Copy of Level III Assessment
cc (letter only): Polk County Soil and Water Conservation District
P:\Polk SWCD NRCS\Polk DWR nroiects 02-08\Mvers Site-DWR-08\Mvers PCN cover letter.doc
PRE-CONSTRUCTION
NOTIFICATION
0 7- 1 4 4 8
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".)
FA~~EN
I. Processing RECEIVED
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 Coast
Environmental Concern (see the top of page 2 for further details), ch ~k
!J \.~
II. Applicant Information AUK `L ¢ 2007
Owner/Applicant Information w1~N~ ~v~o ~ ~atp ~'~~ ~~
Name: Property Owners: Deborah 1Lfyers Applicant: Polk County Soil &
Mailing Address: 3814 Collinsville Rd Water Conservation Dist.
Coulmbus, NC 28722 P.O. Box 236, # 4 Annex
Owner Phone: 828-894-3588 Columbus, NC 28722
Ken Ketcham
3967 Collinsville Rd
Columbus, NC 28722
Owner Phone: 828-859-2629
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: ilenkna,altamontenviornmental. com
Page 5 of 16
III. Project Information
5.
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 08-Tributary to Hooper Creek/Myers & Ketcham Properties
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): P99-41(Myers), P88-42, P88-41 (Ketcham)
4. Location
County: Polk Counter Nearest Town: Hickory Grove
Subdivision name (include phase/lot number): NA
Directions to site (include road numbers/names, landmarks, etc.): Follow I26 east to Exit 1 in
South Carolina. Turn lei (east) o~ the ramp on to Highway 14 (Landrum /Sandy Plains
Road). Follow Hi~y 14 approximately one and three quarter miles and turn right
(southeast~on to Collinsville Road. Follow Collinsville Road approximately one mile to the
second creek crossing at 3814 Collinsville Road. The site extends north (upstream) rom the
Collinsville Road bride over the tributary to the fence at the Myers property line.
Site coordinates (For linear projects, such as a road or utility line, attach
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 035.2028259 °N 082.1217356
6. Property size (acres): Myers =19.77, Ketchum=91.19 Total =110.96
7. Name of nearest receiving body of water: The tributar~to Hooper Creek.
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/.)
a sheet that
oW
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 of approximately 2, 300
linear feet o~~aired incised stream, exhibiting failing banks and a lack o~iparian
v~etation. Land use in the vicinity of the protect consists o horse arms, pastures,
woodland and rural residences.
10. Describe the overall project in detail, including the type of equipment to be used: The State
of North Carolina has provided funding through the DENR Division of Water Resources
(DWR) Water Resources Development Project Grant program for damaged areas that were
not addressed by the Emergency Watershed Protection (EWP~program. The grant targets
streambanks that are actively contributing sediment to waters of the United States resulting
in a reduction o water quality. The Myers / Ketchum site has been identified by the Polk
County Soil and Water Conservation District (SWCD) as one area eligible for DWR undin~
The project area includes 2,300 linear feet of stream. Bank stabilization will address
proximately 1 600 linear feet of the project area. Riparian enhancement will address the
entire site. The tributary is classified as "C" waters throughout the project area.
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 o stream
morphology and the quality o~egetation within the riparian corridor. The findings of the
assessment were provided to the Polk County SWCD Lattached).
In areas where streambanks have failed, atrack-mounted excavator will be used to create a
oodplain bench at or slily below the bankfull elevation. Above the bench, the bank will
be sloped to approximately 3:1 (H.• I~ and will extend to the elevation of the top of bank.
Rootwad rock toe and single vanes may be used throughout the project area in order to
divert and dissipate energy away from vulnerable streambanks. Typical illustrations of
stream structures are attached. 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 o~grain suitable to the
season in which planting will take place. Caution will be used to keel fertilizer and mulch
out of 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 stream. More invasive seed, such as lespedeza will not be
used on this project. Disturbed areas between the edge of water and an elevation above
bankfull will be stabilized with 700 weight coin matting and disturbed areas above the coir
mat will be stabilized with coconutgeo jute 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.
Streambanks located in areas subject to higher hydraulic stresses or where tar eg living trees
exist close to overstep banks will be protected by the installation of rootwads, rock toe, rock
or log vanes or a combination thereof
Page 7 of 16
The pro'et ct may include removal of debris (i. e. lame trees) from the stream channel that is
currently obstructing water flow limiting hydraulic capacity of the stream channel or is
orcing flow into unprotected banks. Debris that is stable and is situated such that it is
protecting vulnerable banks will be le t in place. Trees removed as debris and their root
balls may be used for bank stabilization and as aquatic and terrestrial habitat as rootwad
structures in several locations within the project area.
Rootwads will be constructed from selected downed trees. Trees will be cut 1 S to 20 eet up
the trunk from the roots and sharpened to a point with a chainsaw. In locations were
rootwads are used a trench will be excavated large enough to accommodate a ooter to
placed parallel to the streambank and the rootwad placed perpendicular to the toe of the
slope. The rootwad will be inserted, sharpened trunk end first into the bank such that the
trunk gust above the roots will rest on the footer log. Rootwads will be oriented so that
stream ow is deflected awa~from the streambank to protect ZargL living trees near these
locations. Rootwads will be placed at an angle such that they deflect stream ow away om
the bank and preserve near bank mature live trees. Rootwads and footer logs will be
installed so that the bottoms of the structures extend to the maximum scour depth o the
channel and the top of the footer log and bottom of rootwad log are roughly at the same
elevation as the stream invert. Rootwad trunks will be inserted into the streambank by a
track mounted excavator so that the root ball is exposed and at least two thirds of the trunk is
buried in the bank. Rootwads and ooter logs will be backfilled with material excavated from
the footer log and rootwad trenches and where necessary, will be stabilized on either side
with large angular rock or rip rap.
Rock Toe protection will be installed in the following manner: one row of boulders will be
placed in a footer trench. The footer trench will key into stable area of the bank at the
stream and downstream extents of the rock toe. The footer trench will be lined with, and
rock toe protection will be backed with 700-weight filter fabric. Depending on the
vulnerability of the area, another tier of lame boulders may be placed on top o the ooter
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 of the footer trench. When backfilling is complete,
excess filter cloth protruding,from between the boulders and the backfill will be trimmed to
an elevation sli htg ly higher than the elevation of the top of the boulder toe protection.
Single veins and cross veins constructed of either large angular rock or hardwood tree
trunks may be used to help turn flow in streambends and protect streambanks in high stress
areas on the outside of turns in the stream. These structures will be installed using, similar
techniques as used for installing rock toe structures, utilizing footer trenches, footer logs and
rock all of which will be backed with ,filter cloth. Please refer to the attached illustrations
for more detail pertaining to these in-stream structures.
Equipment used to accomplish the above tasks will include a rubber tired back-hoe /loader,
a track-mounted excavator with hydraulic thumb, one or two 1 S-ton dump trucks, and hand
Page 8 of 16
tools. A wood chipper may be used to reduce the amount of debris to be hauled away from
the site and minimize potential disposal fees. Wood chips may be used to mulch areas
beyond the top of bank.
Sedimentation and erosion control practices will be implemented throughout the protect.
After stabilization measures are in place and disturbed areas of the site are seeded, native
trees and shrubs in the form of live stakes, bare-root and container plants will be planted in
stabilized areas as well as in other areas o the proiect reach where riparian vegetation is
parse or narrower than 20 feet from the water's edge. Tree varieties were selected partially
by observations made during the Level III assessment and by selection of native trees that
exist in the Piedmont Re ig on of North Carolina. The contractor will be required to install
equal numbers of at least six varieties of large trees from the ollowing~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 o at least
eight species from the ollowin list of small trees: Downy Serviceberry (Shadebush),
American Hornbeam (Ironwood) American Holly, Red Mulberry, Common Alder, Red
Chokeberry Button Bush Witch Hazel, Winterberry, Northern Maleberry. Catawba
Rhododendron Wild Azalea Blackberry Dog hobble or Fetter bush. Plantin~of trees,
shrubs and live stakes will conform to the specifications outlined in the NCDENR Guidelines
for Riparian Bu, ffer Restoration.
At the project site work shall proceed from downstream to upstream to reduce sediment
loading. Stagin areas for equipment and material will be placed in upland areas away from
surface water and outside owe oodplain. Work will proceed as follows at the work area
(as applicable).
1. FIaQ 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.
S. Inspect and maintain r~airs.
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 proiect area
are included as Figure 3. Representative photos of the proiect area may be found in the
attached Level III Assessment at the end of the document.
Page 9 of 16
1 I. Explain the purpose of the proposed work: The work is being completed to substantially
reduce the amount of sediment entering the tributary within the protect area. The protect is
designed to return the r~erenced portion of the tributary to a state of stability and to
increase it's natural potential b~providing the tributary access to a floodplain and by
restorin~~and enhancing native vegetation within the riparian corridor.
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 USAGE 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.
No
V. Proposed Impacts to Waters of the United States/yVaters 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 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
(yes/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 referenced 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 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 Trib. to Hooper Cr. Stabilization Perennial ~17•Bkf t @ 1,600 < 1.5
Total Stream Impact (by length and acreage) 1.5
Page 11 of 16
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): < 1.5
Wetland Impact (acres): 0
Open Water Impact (acres): 0
Total Impact to Waters of the U.S. (acres) < 1.5
Total Stream Impact (linear feet): 1,600
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 of the Polk County
SWCD 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 o sand bags
or bK placing excavated footer material such that it deflects water away from work areas. Work
will be completed in stags such that se mg ents o the project will be completed and stabilized on
a daily basis. Temporary grass/grain cover shall be planted on all bare soil immediately a ter
ground disturbing activities are completed. Straw mulch and tall fescue grass will not be used in
r~arian 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
followed.
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.
Page 13 of 16
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.
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
(919) 715-0476 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)
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 (919) 733-5083 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.
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- or the project 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 o this project.
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 an after-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 of this project should have a positive impact on nearby downstream water
gualit~by reducing the amount ofsediment bein~eposited in the stream within the project area
and by enhancing and widening the 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 project is scheduled to take place in the a~of 2007 when trees
become dormant and lantin onditions are avorable. Late Se tember to earl December.
:_--~'
"Z
dfplicatent's Signature ~ Date
signature is valid only if an authorization letter from the applicant is provided.)
Page 16 of 16
LETTERS OF
ACCESS /AUTHORIZATION
r,u.1,, ~nn~ ~,ZFp~ di±amcrt ~^~rircrmer~ta~
AC~:E~~ ,A,G~EENIENT
h1c. F2?1 G,
,~, ._~
~~ '~'ft~~;~i '..
~~
_. i
~ ~f
i ~ 7 -~ ~~ ~J~ t li,
i ~t ~la
The SWCD is requewsting access to the praperry far the purpose of assessing and repairing
damage to the streambarzk, stream Channel, and flaadplain that was caused by hurricanes
Frances and Ivan and mare recent starts. The repair work ~°it1 include same or all of the
following elements:
-Streambank Stabilization -Native plant Re-~'egatatian
-17ebris Removal -Exotic/Inva~sive plant removal,
S~NCD and the Property i?rvner agree:
1. Property owner grants permission to ~WCD and its contractors and agents to
enter upon theix land far the purpose of assessing and repairing the flood damage
caused by Hurricanes Prances and. Ivan. Additionally. this agreement includes the
right of ingress and egress on the land for the purpose of at~.irtaining the
emergency works for the period of one year from the date of completion.
~. Property owner grants permission to SWCD and its contractors and agent to
conduct stream stabilization measures, which may include debris rern.oval, stream
bank stabilization using rocl~s, woad, and/or, mulching and seeding, andJor
channel re1_acation.
~. 5~,~7'CT) agices to comply ~rit~h loco:, state, and federal laws applicable to the work,
and further agrees to exercise due care and caution in f'ae performance of all tivork
on the Property.
4. This Agreement constitutes the entire understanding between the parties. All
prior agreements or underskaradings,whether oral or written, are superseded. This
Agreement maybe amended only by a Written docurnent duly executed by the
parties.
5 , The proposed measures are intended to repair Rood damage to the stream and to
return affected areas to pre-flood conditions. Repair andtar improvements to
structures are not part of this project. Damaged bridges; drivEways, and eroded
fells are not addressed by measures. SWCIa and its Contr'aGtC-rS will strive to
minimize impacts to adjacent properties. However, some impact maybe
unavoidable. The Property owner releases S~VCU and its contractors from
liability for aaty damage incurred as result of this woriz.
6. This agreement does not provide confirmation that the subject site is eligible for
Emergency Funds, nor does it enc~.rmlier funds fttr any repair worm at this site,
7. 1?ropzrty owner agrees not t~; remove or modi~~~ canstructiQn repairs, including
vegetation, for tine year tram the date of completion.
Phis Access Agreement is made between Polk County fail arid: Water CanSer'v'atiQn
District supervisor Board (~'VVCT)~ and:
~~ ~~ !j . 1 J~ L n 'J ? J L V~ ~'' i~ ~±~ i I I v i i} ~~ ri ~ V i i~ i~ i e n- t~ l
hl„ G^<1 G ~
i r v~ J L J I i J
S. S~i%CD will discuss the draft design with the Property C1'uv'ner prior Co submittal
for permitting.
9. Property ~Jwner agrees to reimburse SWCD for all costs associated with the
design. if the property ow~mer decides tc~ t~~i~~te this agreement after work has
began.
10. The Polk Co~iinty Soil anal Water conSer`vatiUZx Z3i5frict and Poly County praperiy
owners hereby aut$orize At~mont En~iroruxxental Inc. {AgentfCansultant) to 51gn
and execute all necessary permits and coordinate communications with the
apnropriafe regulakary agencies.
Palk County Sail and'V4'atsr Conservation District
bate: ~ f ' ~ W~~
SWCD or eprese ire
~~:
Date: J~- `~~~~~
Property ihvner
By. ~., .
~at~:~c~,~s~~
ACCESS AGREEMENT
This Access Agreement is made between Polk County Soil and Water Conservation + '~~!
District Supervisor Board (SWCD) and:
Pro e Owner: i~(.~''/"~r`,'c~ ~'I '~~r'r'?fz%~^~'t
,,
Street Address: ~~ ~ ~~ ~ - %~ l : ~~ ~'' .~ ~.st~, ,~~~' ,~! _
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-vegatation
-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 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: ~C~l'17 ~~ri /t :, lV 71~ l~r'il
Date: ~/'~G~ -~,,
SWC resenta 've
By:
Date: gf ~a~0 ~?
~~
Property Owner ,~
By: w-~ ~~ f"fly ~..
Date: ~ ~.,~°'lo~,%`~)`?
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SITE LOCATION _
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SOURCE: USGS LANDRUM L FINGERVILLE VEST
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i
• VICINITY MAP FIGURE
ENGINEERING & HYDR0GEOLOGY DWR-08-TRIB. TO HOOFER CR./
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL.828.281.3350 FACM8.281.3351 MYERS AND KETCHUM PROPERTIES
www.altwnontenvironmental.com POLK COUNTY,
DRAWN BY: JOEL LENK NORTH CAROLINA
PROJECT MANAGER: STU RYMAN SCALE (FEET)
CLIENT: PCSWCD 1000 0 1000 2000
DATE: 08-2-07 PAP— SWCD NRCS\PD r DWR PROJECTS 02-08\MYERs SITE-DWR-08\FIGURE\MYERSFIGI.DWG
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//////i
Legend
Flood-prone Elevation
Normal Flow Elevation
Bankfull Flow Elevation
Bankfull Area
Existing Ground Elevation
Proposed Ground Elevation
• ~ ~ , CROSS-SECTIONS FIGURE
1-' 1 Y DWR 08-TRIBUTARY TO HOOFER CR. /
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL 828.2813350 FAC828.281.3351 MYERS & KETCHAM PROPERTIES
www. altamontenv ironmental. com
DRAWN BY: PAUL DOW FOLK COUNTY, NORTH CARLINA
PROJECT MANAGER: STU RYMAN SCALE (FEET)
CLIENT: FOLK COUNTY SWCD NRCS 5 0 5 10
DATE: 8/17/07 FILE PATH: P:\POLK SWCD NRCS \POLK DWR PROJECTS 02-08\MYERS SITE-DWR-OB \FIGURES\ MYERSSTREAMDATA.DWG
STREAM STRUCTURE
ILLUSTRATIONS
Grade Streambank
to a Stable Slope
i
/ -~r
~\~~J~/
/
Stable Cut
~~~
Qcf Elevation
~
'~
Slope
Bracing Boulder
.~~~1 ~ ~ D
EXtend
Bench
1-2 Feet
o q
~
.,,;.
Past
Stream Bed Invert Footer
Log
Top Of Footer Log At
Or Below Stream Invert
SECTION Root Wad and Footer Log
Extends To
Max. Scour Depth
. ~ Footer Log
Flow
4 Root Fan
1
Trunk
Root Wads Oriented \
Perpendicular To
Flow Direction °
Id
Construction Note: Bracing
A Brace Log Can Be Used Boulders
For Additional Stability //
And Should Be Pinned To (0~ ~
Adjacent Rootwads
t
PLAN
Section & Plan Views Adapted
NOT TO SCALE From Rosgen (1999)
• ~ ~ ~ ROOTWAD SCHEMATIC
E N G I N E E R I N G & H Y D R O G E O L O G Y
50 COLLEGE STREET, AS1-IEVILLE, NC 28801
TEL.828.281.3350 FnC.828.281.3351
DWR-08-TRIBUTARY TO HOOPER CREEK
www.altamontenv ironmental.com
MYERS AND KETCHAM PROPERTIES
DRAWN BY: JOEL LENK POLK COUNTY, NORTH CAROLINA
PROJECT MANAGER: STU RYMAN
SWCD
CLIENT: POLK CO SOURCE: THE VIRGINIA STREAM RESTORATION
& STABILIZATION BEST MANAGEMENT
.
DATE: g/pp/ppp7 PRACTICES GUIDE. 2004
P:\POLK SWCD NRCS \PO~K DWR PeodecTS 02-OB \MreRS SirE-DWR-08 \Flcuees\ROOTWAD Flc.owc
_~ Bankfull Stage ~ )
Fk>rv -~ 4 - 15% -inner Berm
C ~')
~~~
~
an -~~
iii
n
~~
t
nel =
~~~~ ~
~~,~
~~~~~~\~
sit,~~~~
~~i//iii ~ a/G~
/i~
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/1
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~~ ~
~
~~~
~~~
~
~
=
PROFILE
Note: Use of geotextile
material on upstream
side of logs is strongly
recommended
FLOW
I
Slope and
Vegetate Banks
Banldull
Legend
~) Header Rods Pleader. Log
Footer
~/ Vegetffibn ~ Log
NOT TO SCALE
ENGINEER_1_NG-& HYO R_O G.E OL_0_GY
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL.828.281.3350 Fnc.828.281.3351
www.altamontcnvironmental.com
DRAWN BY: JOEL LENK
PROJECT MANAGER: STU RYMAN SOURCE- NORTH CAROLINA
CLIENT: PCSWCD STREAM RESTORATION
DATE: 8/22/2007 INSTITUTE
LOG VANE
ILLUSTRATION
DWR 08-TRIBUTARY TO HOOPER CREEK
MYERS AND KETCHAM PROPERTIES
POLK COUNTY, NORTH CAROLINA
P:\POLK $WCD NRC$\POLK DWR PROJECTS 02-08\MYERS SITE-DWR-08\FIGURES\$TRUCTURES ILLUSTRATIONS.OWG
CROSS-SECTION
Structure spans 1/2 to Z3 of stream width.
J,~
PLAN
Flow ~,
\ai \\ / r
///
Channel \\~~
Sut~Pavement~~`
\~\\=
PROFILE
Slope and
Vegetate Banks
Banlduq
\\ ~ Bench
_/ -
\\_
/1~~
Legend .~ ~ ,~
Header Rock ~~ :Tree Ele/~- - ~ ~'at
Footer Rods ~ Vegetation
I NOT TO SCALE
E_N G I_N_E_E_R_ I N G & H Y O R O G E 0_l._0 G Y
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL.828.281.3350 Fnc.828.28L3351
www.altamontenvironmental.com
DRAWN BY: JOEL LENK
PROJECT MANAGER: STU RYMAN SOURCE: NORTH CAROLINA
CLIENT: PCSWCD STREAM RESTORATION
DATE: 8/22/07 INSTITUTE
Notes:
-Rocks in vane are not
spaced.
-Rocks in "J"section are
spaced 1/2 rock width.
CROSS-SECTION
Inner Berm
ROCK J-HOOK
ILLUSTRATION
DWR 08-TRIBUTARY TO HOOPER CREEK
MYERS AND KETCHAM PROPERTIES
POLK COUNTY, NORTH CAROLINA
FILE PATH: P:\Pau SWCD NRCS\PaLrc DWR Pftwecl4 02-OB\MTERS Site-DWR-OB \Fi4uaE4\ STRUCTURES Iuusm4nON5.ow4
-Rocks in "J" section are
spaced y2 rock width.
-Use of geotextile
upstream of logs
is recommended
F
Flow
Y3-Yz of Bottom Width
t__/
~~
c~
,:
~`
,. ~
Log
Diameter
14"-36"
PLAN
Slope and
Vegetate Banks
Bankfu0
PROFILE
/'~~
L`°l°~
For logs <24" diameter, cable 31ogs
(10"-12") on ends using Y" cable.
Bottom two logs should be below the
stream bed.
NOT TO SCALE
_N.GIN.E__ER1NG & H YOROGEOLOGY
50 COLLEGE STREET, ASI-IEVILLE, NC 28801
TEL.828.281.3350 FnC.828.2813351
www.altamontenvironmental.com
DRAWN BY: JOEL LENK
PROJECT MANAGER: STU RYMAN SOURCE: NORTH CAROLINA
CLIENT: PCSWCD STREAM RESTORATION
DATE: 8/22/07 INSTITUTE
LOG J-HOOK
ILLUSTRATION
DWR 08-TRIBUTARY TO HOOPER CREEK
MYERS AND KETCHAM PROPERTIES
POLK COUNTY, NORTH CAROLINA
FILE PCTN: P:\POLK SWCD NRCS\Pau DWR PaWECrs 02-OB\MTER$ Si~f-DWR-OB\Fwuaes\ Srr+ucluRfS l~~siRGnONS.owG
CROSS-SECTION
Structure spans 1/2 to ?J3 of stn:am width.
Note:
f Flow -Rocks in vane are not
spaced.
r,, rr~,
i~
/~
I'I r
rr~ ~~~~
r
i~~ ~~
r~,I ~~
1 -
1,,,
,.,~
1
,;, ,
Ir ,.
... ,.
,~
,,,,,
,/ IJ \
/~~ ~
/<< ,~~
PLAN
Bankfull Stage
415°/ _ Inner Bean
Flow -~ ,~. -~' 1 ~. ~ ~"t ~
iii ~// 1 ~ ~~ _ ~ - _~- ~- ~~ - -
HS lour ~ 11=err=
///_~ n =~-iii =iii -~ ~ .r=
Channel ~~~~~ _ ~~~ ~~~~~ ~~~_ ~~~ ~~~~~~ ~~~~~~ ~~~
PROFILE
Slope and
Vegetate Banks
Bankfull
\\ ~ Bench - -
~1~ / //~
Legend Bed ~ .~ <~ ~~ ~ -//ill-%/.~1!/- - -///_-///
j//-=j /// /// - ///_///-
Header Rode = ~ ~\\ _~ ~\\--\~ ~\\ ,
~~ ~ Vegetation
~..~Y PooterRodc CROSS-SECTION
I NOT TO SCALE
N G I N E E R I N G & H Y D R O G E O L O G Y
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL.828.28L3350 EAC.828.281.3351
www, altamontenvironmental. com
DRAWN BY: JOEL LENK SOURCE: NORTH CAROLINA
PROJECT MANAGER: STU RYMAN STREAM RESTORATION
CLIENT: PCSWCD
DATE: 8/22/07 INSTITUTE
SINGLE ROCK VANE
ILLUSTRATION
DWR 08-TRIBUTARY TO HOOPER CREEK
MYER AND KETCHAM PROPERTIES
POLK COUNTY, NORTH CAROLINA
FILE PATH: P:\POU SWCD NRCS\P0.R OWR mwEtrs 02-OB\MreRC Site-DWR-OB\Ficur~5\ STRUCTURES luusinAnaws.owc
COPY OF LEVEL III
ASSESSMENT
E N G I N E E R I N G & H Y D R O G E O L O G Y
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL. 828.281.3350 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
~~
~~ ~1
~~ ~' to ~r
o ~ ~~ ~;;~~,a
~~
Re: Level III Assessment of Stream Condition
DWR Project 08-Tributary to Hooper Creek / Myers and Ketchum Properties
3814 Collinsville Road
Polk County, NC 28722
Dear Ms. Reid:
Altamont Environmental Inc. (Altamont) has completed a Level III Assessment of the existing conditions
for the above referenced stream reach and has analyzed the stream in its current state n comparison to its
full natural potential. The procedures used in this evaluation 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 locations 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
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 were beyond the scope of this project.. Therefore as
an initial step, a Level III assessment was completed on each reach to quantify the impacts and establish a
basis for the design of the stabilization measures.
The project area is located on a tributary to Hooper Creek in a narrow valley oriented in a north-south
direction that originates at the southwest slope of Little Mountain, southeast of the community of Penile.
The project area is bounded by the fence at the Myers property at the upstream end and a bridge that
passes over tributary at Collinsville Road on the downstream end. The proposed project area is
approximately 2,300 feet in length. Bank stabilization measures, riparian restoration and exotic invasive
plant removal are proposed for the entire length of the tributary within the project area.
P:~Polk SWCD NRCS~PoIk DWR projects 02-08~Nlyers Site-DWR-08~Nlyers Level III Letter.doc
Ms. Ried
August 21, 2007
Page 2 of 4
LEVEL III ASSESSMENT
On July 30~and 31, 2007 Altamont representatives analyzed the condition of the stream. Using various
documents to collect field data, including: a Level III Assessment form (from pages 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, a longitudinal profile, cross-sections, and photographs of the
assessed reach of the tributary to Hooper Creek.
The tributary to Hooper Creek within the project area is classified as a GSc stream according to the
Rosgen Classification of Natural Rivers. 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 fair condition. Narrowing of the corridor for
creation of horse pasture, bank erosion and an abundance of exotic invasive plants (e.g. Multi-flora Rose)
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, Hooper
Creek and potentially other waters downstream. These factors have had adverse effects on the stream
channel, 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.
Stream Size can be defined by several methods. For this project, an estimated stream size (cross-
sectional area at bankfull stage in square feet (ftz)) was developed using the regional curve for rural
Piedmont North Carolina Streams (Harman, W.H, et al, 1999). Specifically, the crosses-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 this tributary should fall between 6 and 19 ftz. The actual bankfull cross-
sectional area measured in the project reach is approximately 21 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 tributary to Hooper Creek channel and Stream
Survey Data Sheet.
The Stream Order of the tributary to Hooper Creek is second order. A second order stream is defined
as a stream in which two or more first 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 and wavelength were
calculated as part of the assessment. The tightest Radius of Curvature measured in the project reach
was 12 feet. Average Belt Width was not measured, and Sinuosi was calculated to be 1.39. Detailed
assessment of meander pattern is typically completed to aid in natural channel design, which is beyond
the scope of this project.
P:~Polk SWCD NRCS~PoIk DWR projects 02-08~Ivlyers Site-DWR-08UVIyers Level III Letter.doc
Ms. Ried
August 21, 2007
Page 3 of 4 -
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 134, which falls in the Poor/ Unstable category for a stream
reach classified as GSc.
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 tributary in the project area was classified as
extreme. Near Bank Stress was observed to be extreme due to a high sinuosity; particularly in areas
where mid channel bars force water into poorly vegetated streambanks and at the outside of channel
bends where steep 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 36 was determined.
5treambed (Vertical) Stability was found to be unstable based on the Entrenchment Ratio of the
stream. The Width/Depth Ratio Condition was found to be high. Based on field measurements the
bankfull Width is calculated to be 17.16 feet, the mean bankfull Depth is 1.22 feet and the Width/Depth
Ratio is 14.06 feet/feet.
As discussed, the Stream Type for the tributary to Hooper Creek in the project reach was determined to
be GSc based on the Entrenchment Ratio, Width/Depth Ratio, Sinuosity, Stream Type, Slope and
Channel Material.
The Flow Regime within the project area is altered and unstable. The Depositional Pattern in the
channel within the project area shows signs of high sediment load in that pools appear to be filled with
new sediment and mid and side channel bars have formed in riffle and run areas of the stream. These
changes in the stream channel are most likely due to reduction of riparian vegetation within the stream
corridor, eroding streambanks, creation of horse pasture near the streambank, and inadequate sediment
and erosion control measures at land disturbing activities upstream.
Evidence of Debris Blockages were observed during field assessments consisting of stumps of trees that
had fallen into the stream channel due to under cut banks. A longitudinal Profile of the stream channel
was developed and used to calculate Water Surface Slope and Valley Slope. Bed Features and their
relationships were identified in the field on the longitudinal profile. Features such as Steps, Pools, and
Riffles, and Conyergence/Divergence of the stream flow were noted and entered on the Level III
assessment sheet. The tributary does not exhibit a Plane Bed channel. Pool/riffle S acin can be
viewed on the longitudinal profile 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
reach.
P:~Polk SWCD NRCS~PoIk DWR projects 02-08~Iv1yers Site-DWR-08~Nlyers Level III Letter.doc
Ms. Ried
August 21, 2007
Page 4 of 4
While conducting the Level III assessment of the project, it was observed that nearly all of the
streambanks on both sides of the tributary are nearly vertical or undercut, bare of vegetation and are
contributing sediment to the tributary and waters downstream throughout the year. Altamont understands
that the original estimate for streambank stabilization included only the streambanks on river left and that
the former property owner on river right was. unwilling to cooperate with the grant program.
During a field visit the new property owner, Mr. Ken Ketcham granted access /authorization for the
streambanks along his property. Altamont recommends repairing streambanks on both sides of the
tributary as well as enhancing riparian vegetation throughout the project reach where vegetation is
sparse, consists mainly of invasive species, or is narrower than 20 feet from the edge of water.
Altamont appreciates the opportunity to provide these assessments and recommendations to the SWCD
for this project. Please feel free to contact me with any questions or comments.
Si
Joel D. e , P.G.
Attachments: Level III Assessment Form
Stream Survey Data Form
Qualitative Riparian Assessment Guide
Phankuch Channel Stability Rating Sheet
BEHI Evaluation Sheet
Figure 1-Site Vicinity Map
Figure 2-Stream Longitudinal Profile
Figure 3-.Stream Cross-Sections
Photographs and Descriptions
P:~Polk SWCD NRCS~PoIk DWR projects 02-08Uv1yers Site-DWR-08~Iviyers Level III Letter.doc
STREAM SURVEY
GUIDANCE FORMS
LEVEL III: ASSESSMENT OF STREAM CONDITION AND DEPARTURE
SUMMARY OF "CONDITION" CATEGORIES FOR LEVEL III INVENTORY .
Stream Name Tributary to Hooper Creek
Location Myers / Ketcham, Trib. of Hooper Creek
Riparian Vegetation Fair, Narrow Corridor, Invasives
Stream Size, Stream order 21 ft2, second order
Meander pattern over sinuous
Channel stability rating (Pfankuch) 134, Poor
Sediment supply (check apprapriate ca#egory):
Extreme x
Very High
High
Moderate
Low
Streambed (vertical) stability
Aggrading
Degrading x
Stable
Width/depth ratio condition:
Nd`rr~tl (stable';
High
Very high x
Streambank erosion Potential:
Bank erodibility: Near-bank stress:
Extreme x Extreme x
High High
Moderate Moderate
Low Low
General Remarks
ObseNers Lenk, Yurkovich
Stream Type GSc Date 7/30/2007
Flow regime Altered and Unstable
Depositional pattern Accelerated
Debris/channel blockages Existine / Imyending
Altered Channel State: Entrenched/Unstable
Dimensionishape:
Width 17.16
Depth 1.22
Width/depth ratio 14.06
Patterns: (*show as funct. of Wbkf):
Meander length` NM
Radius of curve" 12
Belt width` NM
Sinuosity 1.39
Profile:
Water surface slope .0057
Valley Stope. 0.003
Bed features:
Riffle/pool x
Step/pool
Conver./divrg.
Plane bed no
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 classification 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 ~
Slte DWR-08 Myers & Ketcham Properties /Tributary to Hooper Creek Date 7/30/2007 ,
Survey Crew Lenk, Yurkovich Note: Values collected from representative cross-sections measured in damaged areas of stream
Riffle Cross-Section:
s
Area at Bankfull, Ab,~ (ftz) 21 Mean Depth at Bankfull, Db~ = Ab>~ / Wb~ (ft) 1.22
Width at Bankfull, Wb,a (ft) 17.6 Entrenchment Ratio, ER = WrPa / Wb~ (ft/ft) 1.06
Width Flood Prone Area, W~,a (ft) 18.20 Width to Depth Ratio, W/D = Wb~ / Db~ (ftlft) 14.06
Maximum Depth Bankfull, DUX (ft) 1.56 Bank Height Ratio, BHR = D ToB / Dm~ (ft/ft) 3.86
Max Depth Top Low Bank, DTOB (ft) 6.02 Max Depth Ratio = D~aX / Db~• (ft/ft) 1.28
Longitudinal Profile (minimum of 20 X bankfull width):.
Length of Channel Thalweg, Lam, (ft) 2,327 Slope of Channel, Sa1e = DELEV / Lam, (ft/ft) •0057
' Length of Valley, Caney (ft) 1,680 Sinuosity, K = L,,,. / ~aveY (ft/ft) 1.39
Elevation Change (head first riffle to head last riffle), ~ELEV (ft) 12.78
Pool Cross-Section:
Pool Area at Bankfull, A.P~i (ft2) 59.05 Pool Area Ratio = A.Poo~ / Ab,~ (ft2/ft2) 2.81
Pool Width at Bankfull, W poo1(ft) 23.40 Pool Width Ratio = W Pool / Wb~ (ft/ft) 1.36
Pool Max Depth Banldull, DPoo~ (ft) 3.67 Pool Max Depth Ratio = DPoo~ / Dbkf (ft/ft) 3.01
Pattern Survey (minimum of 2 wavelengths, list ranges of measurements):
Meander Wavelength, Lm (ft) NM Meander Wavelength Ratio = Lm / Wb~• (ft/ft) 1`TM
Meander Belt Width, Wbit (ft) NM Meander Width Ratio = Wb„ / Wb~ (ft/ft) NM
Radius of Curvature, ~ (ft) 12 tightest Radius of Curvature Ratio = ~ / W,;,~ (ft/ft) 0.70
Pebble Count Results (reachwide):
Median Particle Size, d50 (mm) NM (estimated sand)
Rosgen Stream Classification: GSc
Note: NM means Not Measured
T
Qualitative Riparian Vegetation Assessment Guide
Preliminary Assessment
Project nameDWR-08 Myers & Ketcham Date 7/30/2007 Proposed Project length 2,300 feet
Existing vegetation
Dominant tree species Sycamore, Poplar, Red Maple, Hickory, Cherry, Sweet Gum
Size distribution of trees 40-80 ft, Mature, narrow riparian corridor on river left
Dominant shrub species River Birch, Dogwood, Shrub sized sapling of trees listed above
Dominant herbaceous Species Poison Ivy, Grasses, Christmas Fem, various vines.
Successional stage, disturbances,
Or potential for natural change Succession is prohibited in some areas on river left by pasture, trail, mowir
Patchiness Vegetation is patchy along the streambanks do to steepness and erosion.
Visible stresses Pasture creation, mowing and exotic invasive plants
Bank Conditions
Bare banks Yes, ~ 60% of banks in project are are lacking vegetation.
Presence and density of large trees Lar e trees abundant and close to the to of bank is some locations
Angle and presence of Undercuts undercut banks exist on both sides of the stream with angles of 70°- 110°
Material Sandy, Clayey, Silt
Invasive presence Yes,' Privet, Multifloral Rose
Patchiness
Land use
Wildlife impacts or protection No
Recreational Horseback riding /training
Official No
Agricultural and grazing Yes
Mowing Yes
Herbicides Unknown
Other disturbances No
Soil
Composition (series if known) Sandy Clayey Silt with some Gravel and cobble rock fragments
Compactedness Generally uncompacted
Fertility Moderately fertile
Organic material present on non erosional surfaces
Testin No
Construction plannin
Potential for transplants Minimal
Potential for tree fencing No
Invasive Species Prive and ulti ra R se
Action recommended Y remo al du 'ng p ject onst ction
Dominates site N
Looming problem N
Insignificant N
Sources surround site N
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Bank Erosion Hazard Index
S1te DWR-08 Myers & Ketcham Properties /Tributary to Hooper Creek
Survey Crew Lenk; Yurkovich
Date 7/30/2007
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 . 3.86 ~ 30% 50% 90° ~ 40'/°,
Measure Index ] 0 6 5 5 5` -31-
Total Field Index 3 ~ 1
Numerical Adjustments 5
Bedrock: BEHI Very Low
Boulders: BEHI Low
Cobble: Decrease by one category if graveUsand less than 50%
Gravel: Adjust Index up 5 - 10 points depending on sand %
Sand: Adjust Index up 10 points
SildClay: No Adjustment
Stratification: .Adjust Index up 5 - 10 points depending on position of unstable layers in
relation to bankfull stage
Adjusted BEHI 36 /High
_ Upon Cre.r
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SITE LOCATION
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SOURCE.~ USGS LANDRUM 6 FINGERVILLE VEST
~ __ - -~
QUADRANGLES 1+2,000 SCALE, 1982, REVISED 1990
' ~ ~' ~ ~ VICINITY MAP FIGURE
ENGINEERING & HYDROGEOLOCY
50 COLLEGE STREEI, ASHEVIl"LE, NC 25801 DWR-08-TRIB. TO HOOPER CR./
iEL.828.281.3350 FAC.828.2813351
www.al[aznontenvironmental.com MYERS AND KETCHUM PROPERTIES
FOLK COUNTY,
DRAWN BY: JOEL LENK NORTH CAROLINA
PROJECT MANAGER: STU RYMAN SCALE (FEET)
CLIENT: PCSWCD ~ooo o ~ooo zooo
DATE: 08-2-07 P:\POUC SWCD NRCS\P0.x DWP wtglEt~S 02-OB\MVERS SirE-DWR-OB\F ~GWES~MrERSF~GI.owG
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100 ~,,,,,,,,,,,,,,~~,~„~~,,,,~~ .~,~,,,~,~„~,~~„~,,,~ ,~~~~~,. ~,,,,,,~„~,,,~~„~~,,,,,,,,~ .,,~ ,,.,,,,,,,,,,,,~,,,.
_ _ "~ ~` _ _
Proposed Floooplain Bench
and Strearnbank Slope
80 .,,,,,,,,,,~~,~„~~,,,~,,,,,~,,,,,,~~,,,,~,,,,,,~,,,~,,,,,,,.,~„~~,,,~.,,,,~~,,,~„~~,,,,,~,,,,.,,, „~„~„~„~~,,,,,,.
0+00 0+20 0+40 0+60 0+75
Pool Cross-Section
River Left
River Right L e g e n d
100 :,,,,~~,~,,,,,,~,,,,,~~„~,,,,,~- ~~7T,-~~..~.,~ ,,,,,, _ _
0+00 0+20 0+40
Riffle Cross-Section0+4z
N I N R I N H Y R Y
50 COLLEGE STREET, ASHEVILLE, NC 28801
TEL.828.281.3350 FAC828.281.3351
ww w. al tam onteuv ironmental. com
DRAWN BY: PAUL DOW
PROJECT MANAGER: STU RYMAN SCALE (FEET)
CLIENT: FOLK COUNTY SWCD NRCS 5 0 5
DATE: B/17/07
//////i
Flood-prone Elevation
Normal Flow Elevation
Bankfull Flow Elevation
Bankfull Area
Existing Ground Elevation
Proposed Ground Elevation ',
CROSS-SECTIONS FIGURE
DWR 08-TRIBUTARY TO HOOFER CR. /
- f 1YERS & KETCHAM PROPERTIES
POLL( COUNTY, NORTH CARLINA
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~ FILE PATH: P:\POLK SWCD NRCS \POLK DWR PROJECTS 02-08 \MYERS SITE-DWR-08 \FIGURES\ MYERSSTREAMDATA.DWG
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PHOTOS AND
DESCRIPTIONS
PHOTOGRAPHS & DESCRIPTIONS
DWR PROJECT 08-MYERS AND KETCHAM PROPRERTIES,
TRIBUTARY TO HOOPER CREEK, POLK CONTY, NC
Photo 1. View northwest, showing debris blockages, mature trees near top of bank, and overhung
non-vegetated bank in background. Note placement of debris in foreground to protect Myers
property.
P:~Polk SWCD NRCS~PoIk DWR projects 02-08U~Iyers Site-DWR-08~Ivlyers photos for Level IILdoc
P:~Polk SWCD NRCS~PoIk DWR projects 02-08Vvlyers Site-DWR-08~Ivlyers photos for Level IILdoc
Photo 3. View northeast, showing tight bend in project area and failing cut-bank.
Photo 4. View south of mature trees near top of bank and potential location for rootwad
structures.
P:~Polk SWCD NRCS~PoIk DWR projects 02-08Wlyers Site-DWR-08Wlyers photos for Level IILdoc
Photo 5. View southwest showing vertical poorly vegetated bank and exotic invasive plants.